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* RFC: remove sn2, hpsim and ia64 machvecs v2
@ 2019-08-13  7:24 Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 01/28] char: remove the SGI snsc driver Christoph Hellwig
                   ` (26 more replies)
  0 siblings, 27 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

[adding some ex-SGI folks to comment as well]

Hi Tony,

let me know what you think of this series.  This drops the pretty much
dead sn2 and hpsim support, which then allows us to build a single ia64
kernel image that supports all remaining systems without extra indirections
in the fast path.

A git tree is also available at:

    git://git.infradead.org/users/hch/misc.git ia64-remove-machvecs

Gitweb:

    http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/ia64-remove-machvecs

Changes since v1:
 - restore !NUMA support
 - fix compile for configs

^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 01/28] char: remove the SGI snsc driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 02/28] char: remove the SGI tiocx/mbcs driver Christoph Hellwig
                   ` (25 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/configs/generic_defconfig   |   1 -
 arch/ia64/configs/gensparse_defconfig |   1 -
 drivers/char/Kconfig                  |   8 -
 drivers/char/Makefile                 |   1 -
 drivers/char/snsc.c                   | 469 --------------------------
 drivers/char/snsc.h                   |  92 -----
 drivers/char/snsc_event.c             | 303 -----------------
 7 files changed, 875 deletions(-)
 delete mode 100644 drivers/char/snsc.c
 delete mode 100644 drivers/char/snsc.h
 delete mode 100644 drivers/char/snsc_event.c

diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 81f686dee53c..22b98ddc9913 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -90,7 +90,6 @@ CONFIG_IGB=y
 # CONFIG_SERIO_SERPORT is not set
 CONFIG_GAMEPORT=m
 CONFIG_SERIAL_NONSTANDARD=y
-CONFIG_SGI_SNSC=y
 CONFIG_SGI_TIOCX=y
 CONFIG_SGI_MBCS=m
 CONFIG_SERIAL_8250=y
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 5b4fcdd51457..1d230c0a90bd 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -79,7 +79,6 @@ CONFIG_E1000=y
 # CONFIG_SERIO_SERPORT is not set
 CONFIG_GAMEPORT=m
 CONFIG_SERIAL_NONSTANDARD=y
-CONFIG_SGI_SNSC=y
 CONFIG_SGI_TIOCX=y
 CONFIG_SGI_MBCS=m
 CONFIG_SERIAL_8250=y
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 3e866885a405..c9fbbc6a3967 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -26,14 +26,6 @@ config DEVKMEM
 	  kind of kernel debugging operations.
 	  When in doubt, say "N".
 
-config SGI_SNSC
-	bool "SGI Altix system controller communication support"
-	depends on (IA64_SGI_SN2 || IA64_GENERIC)
-	help
-	  If you have an SGI Altix and you want to enable system
-	  controller communication from user space (you want this!),
-	  say Y.  Otherwise, say N.
-
 config SGI_TIOCX
        bool "SGI TIO CX driver support"
        depends on (IA64_SGI_SN2 || IA64_GENERIC)
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index fbea7dd12932..50835d420471 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -9,7 +9,6 @@ obj-y				+= misc.o
 obj-$(CONFIG_ATARI_DSP56K)	+= dsp56k.o
 obj-$(CONFIG_VIRTIO_CONSOLE)	+= virtio_console.o
 obj-$(CONFIG_RAW_DRIVER)	+= raw.o
-obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o
 obj-$(CONFIG_MSPEC)		+= mspec.o
 obj-$(CONFIG_UV_MMTIMER)	+= uv_mmtimer.o
 obj-$(CONFIG_IBM_BSR)		+= bsr.o
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
deleted file mode 100644
index 5918ea7499bb..000000000000
--- a/drivers/char/snsc.c
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004, 2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * System controller communication driver
- *
- * This driver allows a user process to communicate with the system
- * controller (a.k.a. "IRouter") network in an SGI SN system.
- */
-
-#include <linux/interrupt.h>
-#include <linux/sched/signal.h>
-#include <linux/device.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <asm/sn/io.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/module.h>
-#include <asm/sn/geo.h>
-#include <asm/sn/nodepda.h>
-#include "snsc.h"
-
-#define SYSCTL_BASENAME	"snsc"
-
-#define SCDRV_BUFSZ	2048
-#define SCDRV_TIMEOUT	1000
-
-static DEFINE_MUTEX(scdrv_mutex);
-static irqreturn_t
-scdrv_interrupt(int irq, void *subch_data)
-{
-	struct subch_data_s *sd = subch_data;
-	unsigned long flags;
-	int status;
-
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	spin_lock(&sd->sd_wlock);
-	status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-
-	if (status > 0) {
-		if (status & SAL_IROUTER_INTR_RECV) {
-			wake_up(&sd->sd_rq);
-		}
-		if (status & SAL_IROUTER_INTR_XMIT) {
-			ia64_sn_irtr_intr_disable
-			    (sd->sd_nasid, sd->sd_subch,
-			     SAL_IROUTER_INTR_XMIT);
-			wake_up(&sd->sd_wq);
-		}
-	}
-	spin_unlock(&sd->sd_wlock);
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-	return IRQ_HANDLED;
-}
-
-/*
- * scdrv_open
- *
- * Reserve a subchannel for system controller communication.
- */
-
-static int
-scdrv_open(struct inode *inode, struct file *file)
-{
-	struct sysctl_data_s *scd;
-	struct subch_data_s *sd;
-	int rv;
-
-	/* look up device info for this device file */
-	scd = container_of(inode->i_cdev, struct sysctl_data_s, scd_cdev);
-
-	/* allocate memory for subchannel data */
-	sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
-	if (sd == NULL) {
-		printk("%s: couldn't allocate subchannel data\n",
-		       __func__);
-		return -ENOMEM;
-	}
-
-	/* initialize subch_data_s fields */
-	sd->sd_nasid = scd->scd_nasid;
-	sd->sd_subch = ia64_sn_irtr_open(scd->scd_nasid);
-
-	if (sd->sd_subch < 0) {
-		kfree(sd);
-		printk("%s: couldn't allocate subchannel\n", __func__);
-		return -EBUSY;
-	}
-
-	spin_lock_init(&sd->sd_rlock);
-	spin_lock_init(&sd->sd_wlock);
-	init_waitqueue_head(&sd->sd_rq);
-	init_waitqueue_head(&sd->sd_wq);
-	sema_init(&sd->sd_rbs, 1);
-	sema_init(&sd->sd_wbs, 1);
-
-	file->private_data = sd;
-
-	/* hook this subchannel up to the system controller interrupt */
-	mutex_lock(&scdrv_mutex);
-	rv = request_irq(SGI_UART_VECTOR, scdrv_interrupt,
-			 IRQF_SHARED, SYSCTL_BASENAME, sd);
-	if (rv) {
-		ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch);
-		kfree(sd);
-		printk("%s: irq request failed (%d)\n", __func__, rv);
-		mutex_unlock(&scdrv_mutex);
-		return -EBUSY;
-	}
-	mutex_unlock(&scdrv_mutex);
-	return 0;
-}
-
-/*
- * scdrv_release
- *
- * Release a previously-reserved subchannel.
- */
-
-static int
-scdrv_release(struct inode *inode, struct file *file)
-{
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-	int rv;
-
-	/* free the interrupt */
-	free_irq(SGI_UART_VECTOR, sd);
-
-	/* ask SAL to close the subchannel */
-	rv = ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch);
-
-	kfree(sd);
-	return rv;
-}
-
-/*
- * scdrv_read
- *
- * Called to read bytes from the open IRouter pipe.
- *
- */
-
-static inline int
-read_status_check(struct subch_data_s *sd, int *len)
-{
-	return ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch, sd->sd_rb, len);
-}
-
-static ssize_t
-scdrv_read(struct file *file, char __user *buf, size_t count, loff_t *f_pos)
-{
-	int status;
-	int len;
-	unsigned long flags;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-
-	/* try to get control of the read buffer */
-	if (down_trylock(&sd->sd_rbs)) {
-		/* somebody else has it now;
-		 * if we're non-blocking, then exit...
-		 */
-		if (file->f_flags & O_NONBLOCK) {
-			return -EAGAIN;
-		}
-		/* ...or if we want to block, then do so here */
-		if (down_interruptible(&sd->sd_rbs)) {
-			/* something went wrong with wait */
-			return -ERESTARTSYS;
-		}
-	}
-
-	/* anything to read? */
-	len = CHUNKSIZE;
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	status = read_status_check(sd, &len);
-
-	/* if not, and we're blocking I/O, loop */
-	while (status < 0) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		if (file->f_flags & O_NONBLOCK) {
-			spin_unlock_irqrestore(&sd->sd_rlock, flags);
-			up(&sd->sd_rbs);
-			return -EAGAIN;
-		}
-
-		len = CHUNKSIZE;
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&sd->sd_rq, &wait);
-		spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
-		schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
-
-		remove_wait_queue(&sd->sd_rq, &wait);
-		if (signal_pending(current)) {
-			/* wait was interrupted */
-			up(&sd->sd_rbs);
-			return -ERESTARTSYS;
-		}
-
-		spin_lock_irqsave(&sd->sd_rlock, flags);
-		status = read_status_check(sd, &len);
-	}
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
-	if (len > 0) {
-		/* we read something in the last read_status_check(); copy
-		 * it out to user space
-		 */
-		if (count < len) {
-			pr_debug("%s: only accepting %d of %d bytes\n",
-				 __func__, (int) count, len);
-		}
-		len = min((int) count, len);
-		if (copy_to_user(buf, sd->sd_rb, len))
-			len = -EFAULT;
-	}
-
-	/* release the read buffer and wake anyone who might be
-	 * waiting for it
-	 */
-	up(&sd->sd_rbs);
-
-	/* return the number of characters read in */
-	return len;
-}
-
-/*
- * scdrv_write
- *
- * Writes a chunk of an IRouter packet (or other system controller data)
- * to the system controller.
- *
- */
-static inline int
-write_status_check(struct subch_data_s *sd, int count)
-{
-	return ia64_sn_irtr_send(sd->sd_nasid, sd->sd_subch, sd->sd_wb, count);
-}
-
-static ssize_t
-scdrv_write(struct file *file, const char __user *buf,
-	    size_t count, loff_t *f_pos)
-{
-	unsigned long flags;
-	int status;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-
-	/* try to get control of the write buffer */
-	if (down_trylock(&sd->sd_wbs)) {
-		/* somebody else has it now;
-		 * if we're non-blocking, then exit...
-		 */
-		if (file->f_flags & O_NONBLOCK) {
-			return -EAGAIN;
-		}
-		/* ...or if we want to block, then do so here */
-		if (down_interruptible(&sd->sd_wbs)) {
-			/* something went wrong with wait */
-			return -ERESTARTSYS;
-		}
-	}
-
-	count = min((int) count, CHUNKSIZE);
-	if (copy_from_user(sd->sd_wb, buf, count)) {
-		up(&sd->sd_wbs);
-		return -EFAULT;
-	}
-
-	/* try to send the buffer */
-	spin_lock_irqsave(&sd->sd_wlock, flags);
-	status = write_status_check(sd, count);
-
-	/* if we failed, and we want to block, then loop */
-	while (status <= 0) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		if (file->f_flags & O_NONBLOCK) {
-			spin_unlock_irqrestore(&sd->sd_wlock, flags);
-			up(&sd->sd_wbs);
-			return -EAGAIN;
-		}
-
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&sd->sd_wq, &wait);
-		spin_unlock_irqrestore(&sd->sd_wlock, flags);
-
-		schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
-
-		remove_wait_queue(&sd->sd_wq, &wait);
-		if (signal_pending(current)) {
-			/* wait was interrupted */
-			up(&sd->sd_wbs);
-			return -ERESTARTSYS;
-		}
-
-		spin_lock_irqsave(&sd->sd_wlock, flags);
-		status = write_status_check(sd, count);
-	}
-	spin_unlock_irqrestore(&sd->sd_wlock, flags);
-
-	/* release the write buffer and wake anyone who's waiting for it */
-	up(&sd->sd_wbs);
-
-	/* return the number of characters accepted (should be the complete
-	 * "chunk" as requested)
-	 */
-	if ((status >= 0) && (status < count)) {
-		pr_debug("Didn't accept the full chunk; %d of %d\n",
-			 status, (int) count);
-	}
-	return status;
-}
-
-static __poll_t
-scdrv_poll(struct file *file, struct poll_table_struct *wait)
-{
-	__poll_t mask = 0;
-	int status = 0;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-	unsigned long flags;
-
-	poll_wait(file, &sd->sd_rq, wait);
-	poll_wait(file, &sd->sd_wq, wait);
-
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	spin_lock(&sd->sd_wlock);
-	status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-	spin_unlock(&sd->sd_wlock);
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
-	if (status > 0) {
-		if (status & SAL_IROUTER_INTR_RECV) {
-			mask |= EPOLLIN | EPOLLRDNORM;
-		}
-		if (status & SAL_IROUTER_INTR_XMIT) {
-			mask |= EPOLLOUT | EPOLLWRNORM;
-		}
-	}
-
-	return mask;
-}
-
-static const struct file_operations scdrv_fops = {
-	.owner =	THIS_MODULE,
-	.read =		scdrv_read,
-	.write =	scdrv_write,
-	.poll =		scdrv_poll,
-	.open =		scdrv_open,
-	.release =	scdrv_release,
-	.llseek =	noop_llseek,
-};
-
-static struct class *snsc_class;
-
-/*
- * scdrv_init
- *
- * Called at boot time to initialize the system controller communication
- * facility.
- */
-int __init
-scdrv_init(void)
-{
-	geoid_t geoid;
-	cnodeid_t cnode;
-	char devname[32];
-	char *devnamep;
-	struct sysctl_data_s *scd;
-	void *salbuf;
-	dev_t first_dev, dev;
-	nasid_t event_nasid;
-
-	if (!ia64_platform_is("sn2"))
-		return -ENODEV;
-
-	event_nasid = ia64_sn_get_console_nasid();
-
-	snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
-	if (IS_ERR(snsc_class)) {
-		printk("%s: failed to allocate class\n", __func__);
-		return PTR_ERR(snsc_class);
-	}
-
-	if (alloc_chrdev_region(&first_dev, 0, num_cnodes,
-				SYSCTL_BASENAME) < 0) {
-		printk("%s: failed to register SN system controller device\n",
-		       __func__);
-		return -ENODEV;
-	}
-
-	for (cnode = 0; cnode < num_cnodes; cnode++) {
-			geoid = cnodeid_get_geoid(cnode);
-			devnamep = devname;
-			format_module_id(devnamep, geo_module(geoid),
-					 MODULE_FORMAT_BRIEF);
-			devnamep = devname + strlen(devname);
-			sprintf(devnamep, "^%d#%d", geo_slot(geoid),
-				geo_slab(geoid));
-
-			/* allocate sysctl device data */
-			scd = kzalloc(sizeof (struct sysctl_data_s),
-				      GFP_KERNEL);
-			if (!scd) {
-				printk("%s: failed to allocate device info"
-				       "for %s/%s\n", __func__,
-				       SYSCTL_BASENAME, devname);
-				continue;
-			}
-
-			/* initialize sysctl device data fields */
-			scd->scd_nasid = cnodeid_to_nasid(cnode);
-			if (!(salbuf = kmalloc(SCDRV_BUFSZ, GFP_KERNEL))) {
-				printk("%s: failed to allocate driver buffer"
-				       "(%s%s)\n", __func__,
-				       SYSCTL_BASENAME, devname);
-				kfree(scd);
-				continue;
-			}
-
-			if (ia64_sn_irtr_init(scd->scd_nasid, salbuf,
-					      SCDRV_BUFSZ) < 0) {
-				printk
-				    ("%s: failed to initialize SAL for"
-				     " system controller communication"
-				     " (%s/%s): outdated PROM?\n",
-				     __func__, SYSCTL_BASENAME, devname);
-				kfree(scd);
-				kfree(salbuf);
-				continue;
-			}
-
-			dev = first_dev + cnode;
-			cdev_init(&scd->scd_cdev, &scdrv_fops);
-			if (cdev_add(&scd->scd_cdev, dev, 1)) {
-				printk("%s: failed to register system"
-				       " controller device (%s%s)\n",
-				       __func__, SYSCTL_BASENAME, devname);
-				kfree(scd);
-				kfree(salbuf);
-				continue;
-			}
-
-			device_create(snsc_class, NULL, dev, NULL,
-				      "%s", devname);
-
-			ia64_sn_irtr_intr_enable(scd->scd_nasid,
-						 0 /*ignored */ ,
-						 SAL_IROUTER_INTR_RECV);
-
-                        /* on the console nasid, prepare to receive
-                         * system controller environmental events
-                         */
-                        if(scd->scd_nasid == event_nasid) {
-                                scdrv_event_init(scd);
-                        }
-	}
-	return 0;
-}
-device_initcall(scdrv_init);
diff --git a/drivers/char/snsc.h b/drivers/char/snsc.h
deleted file mode 100644
index e8c52c882b21..000000000000
--- a/drivers/char/snsc.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * This file contains macros and data types for communication with the
- * system controllers in SGI SN systems.
- */
-
-#ifndef _SN_SYSCTL_H_
-#define _SN_SYSCTL_H_
-
-#include <linux/types.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-#include <linux/fs.h>
-#include <linux/cdev.h>
-#include <linux/semaphore.h>
-#include <asm/sn/types.h>
-
-#define CHUNKSIZE 127
-
-/* This structure is used to track an open subchannel. */
-struct subch_data_s {
-	nasid_t sd_nasid;	/* node on which the subchannel was opened */
-	int sd_subch;		/* subchannel number */
-	spinlock_t sd_rlock;	/* monitor lock for rsv */
-	spinlock_t sd_wlock;	/* monitor lock for wsv */
-	wait_queue_head_t sd_rq;	/* wait queue for readers */
-	wait_queue_head_t sd_wq;	/* wait queue for writers */
-	struct semaphore sd_rbs;	/* semaphore for read buffer */
-	struct semaphore sd_wbs;	/* semaphore for write buffer */
-
-	char sd_rb[CHUNKSIZE];	/* read buffer */
-	char sd_wb[CHUNKSIZE];	/* write buffer */
-};
-
-struct sysctl_data_s {
-	struct cdev scd_cdev;	/* Character device info */
-	nasid_t scd_nasid;	/* Node on which subchannels are opened. */
-};
-
-
-/* argument types */
-#define IR_ARG_INT              0x00    /* 4-byte integer (big-endian)  */
-#define IR_ARG_ASCII            0x01    /* null-terminated ASCII string */
-#define IR_ARG_UNKNOWN          0x80    /* unknown data type.  The low
-                                         * 7 bits will contain the data
-                                         * length.                      */
-#define IR_ARG_UNKNOWN_LENGTH_MASK	0x7f
-
-
-/* system controller event codes */
-#define EV_CLASS_MASK		0xf000ul
-#define EV_SEVERITY_MASK	0x0f00ul
-#define EV_COMPONENT_MASK	0x00fful
-
-#define EV_CLASS_POWER		0x1000ul
-#define EV_CLASS_FAN		0x2000ul
-#define EV_CLASS_TEMP		0x3000ul
-#define EV_CLASS_ENV		0x4000ul
-#define EV_CLASS_TEST_FAULT	0x5000ul
-#define EV_CLASS_TEST_WARNING	0x6000ul
-#define EV_CLASS_PWRD_NOTIFY	0x8000ul
-
-/* ENV class codes */
-#define ENV_PWRDN_PEND		0x4101ul
-
-#define EV_SEVERITY_POWER_STABLE	0x0000ul
-#define EV_SEVERITY_POWER_LOW_WARNING	0x0100ul
-#define EV_SEVERITY_POWER_HIGH_WARNING	0x0200ul
-#define EV_SEVERITY_POWER_HIGH_FAULT	0x0300ul
-#define EV_SEVERITY_POWER_LOW_FAULT	0x0400ul
-
-#define EV_SEVERITY_FAN_STABLE		0x0000ul
-#define EV_SEVERITY_FAN_WARNING		0x0100ul
-#define EV_SEVERITY_FAN_FAULT		0x0200ul
-
-#define EV_SEVERITY_TEMP_STABLE		0x0000ul
-#define EV_SEVERITY_TEMP_ADVISORY	0x0100ul
-#define EV_SEVERITY_TEMP_CRITICAL	0x0200ul
-#define EV_SEVERITY_TEMP_FAULT		0x0300ul
-
-void scdrv_event_init(struct sysctl_data_s *);
-
-#endif /* _SN_SYSCTL_H_ */
diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
deleted file mode 100644
index e452673dff66..000000000000
--- a/drivers/char/snsc_event.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * System controller event handler
- *
- * These routines deal with environmental events arriving from the
- * system controllers.
- */
-
-#include <linux/interrupt.h>
-#include <linux/sched/signal.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/unaligned.h>
-#include "snsc.h"
-
-static struct subch_data_s *event_sd;
-
-void scdrv_event(unsigned long);
-DECLARE_TASKLET(sn_sysctl_event, scdrv_event, 0);
-
-/*
- * scdrv_event_interrupt
- *
- * Pull incoming environmental events off the physical link to the
- * system controller and put them in a temporary holding area in SAL.
- * Schedule scdrv_event() to move them along to their ultimate
- * destination.
- */
-static irqreturn_t
-scdrv_event_interrupt(int irq, void *subch_data)
-{
-	struct subch_data_s *sd = subch_data;
-	unsigned long flags;
-	int status;
-
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-
-	if ((status > 0) && (status & SAL_IROUTER_INTR_RECV)) {
-		tasklet_schedule(&sn_sysctl_event);
-	}
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-	return IRQ_HANDLED;
-}
-
-
-/*
- * scdrv_parse_event
- *
- * Break an event (as read from SAL) into useful pieces so we can decide
- * what to do with it.
- */
-static int
-scdrv_parse_event(char *event, int *src, int *code, int *esp_code, char *desc)
-{
-	char *desc_end;
-
-	/* record event source address */
-	*src = get_unaligned_be32(event);
-	event += 4; 			/* move on to event code */
-
-	/* record the system controller's event code */
-	*code = get_unaligned_be32(event);
-	event += 4;			/* move on to event arguments */
-
-	/* how many arguments are in the packet? */
-	if (*event++ != 2) {
-		/* if not 2, give up */
-		return -1;
-	}
-
-	/* parse out the ESP code */
-	if (*event++ != IR_ARG_INT) {
-		/* not an integer argument, so give up */
-		return -1;
-	}
-	*esp_code = get_unaligned_be32(event);
-	event += 4;
-
-	/* parse out the event description */
-	if (*event++ != IR_ARG_ASCII) {
-		/* not an ASCII string, so give up */
-		return -1;
-	}
-	event[CHUNKSIZE-1] = '\0';	/* ensure this string ends! */
-	event += 2; 			/* skip leading CR/LF */
-	desc_end = desc + sprintf(desc, "%s", event);
-
-	/* strip trailing CR/LF (if any) */
-	for (desc_end--;
-	     (desc_end != desc) && ((*desc_end == 0xd) || (*desc_end == 0xa));
-	     desc_end--) {
-		*desc_end = '\0';
-	}
-
-	return 0;
-}
-
-
-/*
- * scdrv_event_severity
- *
- * Figure out how urgent a message we should write to the console/syslog
- * via printk.
- */
-static char *
-scdrv_event_severity(int code)
-{
-	int ev_class = (code & EV_CLASS_MASK);
-	int ev_severity = (code & EV_SEVERITY_MASK);
-	char *pk_severity = KERN_NOTICE;
-
-	switch (ev_class) {
-	case EV_CLASS_POWER:
-		switch (ev_severity) {
-		case EV_SEVERITY_POWER_LOW_WARNING:
-		case EV_SEVERITY_POWER_HIGH_WARNING:
-			pk_severity = KERN_WARNING;
-			break;
-		case EV_SEVERITY_POWER_HIGH_FAULT:
-		case EV_SEVERITY_POWER_LOW_FAULT:
-			pk_severity = KERN_ALERT;
-			break;
-		}
-		break;
-	case EV_CLASS_FAN:
-		switch (ev_severity) {
-		case EV_SEVERITY_FAN_WARNING:
-			pk_severity = KERN_WARNING;
-			break;
-		case EV_SEVERITY_FAN_FAULT:
-			pk_severity = KERN_CRIT;
-			break;
-		}
-		break;
-	case EV_CLASS_TEMP:
-		switch (ev_severity) {
-		case EV_SEVERITY_TEMP_ADVISORY:
-			pk_severity = KERN_WARNING;
-			break;
-		case EV_SEVERITY_TEMP_CRITICAL:
-			pk_severity = KERN_CRIT;
-			break;
-		case EV_SEVERITY_TEMP_FAULT:
-			pk_severity = KERN_ALERT;
-			break;
-		}
-		break;
-	case EV_CLASS_ENV:
-		pk_severity = KERN_ALERT;
-		break;
-	case EV_CLASS_TEST_FAULT:
-		pk_severity = KERN_ALERT;
-		break;
-	case EV_CLASS_TEST_WARNING:
-		pk_severity = KERN_WARNING;
-		break;
-	case EV_CLASS_PWRD_NOTIFY:
-		pk_severity = KERN_ALERT;
-		break;
-	}
-
-	return pk_severity;
-}
-
-
-/*
- * scdrv_dispatch_event
- *
- * Do the right thing with an incoming event.  That's often nothing
- * more than printing it to the system log.  For power-down notifications
- * we start a graceful shutdown.
- */
-static void
-scdrv_dispatch_event(char *event, int len)
-{
-	static int snsc_shutting_down = 0;
-	int code, esp_code, src, class;
-	char desc[CHUNKSIZE];
-	char *severity;
-
-	if (scdrv_parse_event(event, &src, &code, &esp_code, desc) < 0) {
-		/* ignore uninterpretible event */
-		return;
-	}
-
-	/* how urgent is the message? */
-	severity = scdrv_event_severity(code);
-
-	class = (code & EV_CLASS_MASK);
-
-	if (class == EV_CLASS_PWRD_NOTIFY || code == ENV_PWRDN_PEND) {
-		if (snsc_shutting_down)
-			return;
-
-		snsc_shutting_down = 1;
-
-		/* give a message for each type of event */
-		if (class == EV_CLASS_PWRD_NOTIFY)
-			printk(KERN_NOTICE "Power off indication received."
-			       " Sending SIGPWR to init...\n");
-		else if (code == ENV_PWRDN_PEND)
-			printk(KERN_CRIT "WARNING: Shutting down the system"
-			       " due to a critical environmental condition."
-			       " Sending SIGPWR to init...\n");
-
-		/* give a SIGPWR signal to init proc */
-		kill_cad_pid(SIGPWR, 0);
-	} else {
-		/* print to system log */
-		printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
-	}
-}
-
-
-/*
- * scdrv_event
- *
- * Called as a tasklet when an event arrives from the L1.  Read the event
- * from where it's temporarily stored in SAL and call scdrv_dispatch_event()
- * to send it on its way.  Keep trying to read events until SAL indicates
- * that there are no more immediately available.
- */
-void
-scdrv_event(unsigned long dummy)
-{
-	int status;
-	int len;
-	unsigned long flags;
-	struct subch_data_s *sd = event_sd;
-
-	/* anything to read? */
-	len = CHUNKSIZE;
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
-				   sd->sd_rb, &len);
-
-	while (!(status < 0)) {
-		spin_unlock_irqrestore(&sd->sd_rlock, flags);
-		scdrv_dispatch_event(sd->sd_rb, len);
-		len = CHUNKSIZE;
-		spin_lock_irqsave(&sd->sd_rlock, flags);
-		status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
-					   sd->sd_rb, &len);
-	}
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-}
-
-
-/*
- * scdrv_event_init
- *
- * Sets up a system controller subchannel to begin receiving event
- * messages. This is sort of a specialized version of scdrv_open()
- * in drivers/char/sn_sysctl.c.
- */
-void
-scdrv_event_init(struct sysctl_data_s *scd)
-{
-	int rv;
-
-	event_sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
-	if (event_sd == NULL) {
-		printk(KERN_WARNING "%s: couldn't allocate subchannel info"
-		       " for event monitoring\n", __func__);
-		return;
-	}
-
-	/* initialize subch_data_s fields */
-	event_sd->sd_nasid = scd->scd_nasid;
-	spin_lock_init(&event_sd->sd_rlock);
-
-	/* ask the system controllers to send events to this node */
-	event_sd->sd_subch = ia64_sn_sysctl_event_init(scd->scd_nasid);
-
-	if (event_sd->sd_subch < 0) {
-		kfree(event_sd);
-		printk(KERN_WARNING "%s: couldn't open event subchannel\n",
-		       __func__);
-		return;
-	}
-
-	/* hook event subchannel up to the system controller interrupt */
-	rv = request_irq(SGI_UART_VECTOR, scdrv_event_interrupt,
-			 IRQF_SHARED, "system controller events", event_sd);
-	if (rv) {
-		printk(KERN_WARNING "%s: irq request failed (%d)\n",
-		       __func__, rv);
-		ia64_sn_irtr_close(event_sd->sd_nasid, event_sd->sd_subch);
-		kfree(event_sd);
-		return;
-	}
-}
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 02/28] char: remove the SGI tiocx/mbcs driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 01/28] char: remove the SGI snsc driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 03/28] char/agp: remove the sgi-agp driver Christoph Hellwig
                   ` (24 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/configs/generic_defconfig   |   2 -
 arch/ia64/configs/gensparse_defconfig |   2 -
 arch/ia64/sn/kernel/Makefile          |   1 -
 arch/ia64/sn/kernel/tiocx.c           | 569 ------------------
 drivers/char/Kconfig                  |  14 -
 drivers/char/Makefile                 |   1 -
 drivers/char/mbcs.c                   | 831 --------------------------
 drivers/char/mbcs.h                   | 553 -----------------
 8 files changed, 1973 deletions(-)
 delete mode 100644 arch/ia64/sn/kernel/tiocx.c
 delete mode 100644 drivers/char/mbcs.c
 delete mode 100644 drivers/char/mbcs.h

diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 22b98ddc9913..1fc4d5a77e0d 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -90,8 +90,6 @@ CONFIG_IGB=y
 # CONFIG_SERIO_SERPORT is not set
 CONFIG_GAMEPORT=m
 CONFIG_SERIAL_NONSTANDARD=y
-CONFIG_SGI_TIOCX=y
-CONFIG_SGI_MBCS=m
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=6
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 1d230c0a90bd..289ed714ad8b 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -79,8 +79,6 @@ CONFIG_E1000=y
 # CONFIG_SERIO_SERPORT is not set
 CONFIG_GAMEPORT=m
 CONFIG_SERIAL_NONSTANDARD=y
-CONFIG_SGI_TIOCX=y
-CONFIG_SGI_MBCS=m
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=6
diff --git a/arch/ia64/sn/kernel/Makefile b/arch/ia64/sn/kernel/Makefile
index 9c349dd23265..2f580603370d 100644
--- a/arch/ia64/sn/kernel/Makefile
+++ b/arch/ia64/sn/kernel/Makefile
@@ -14,5 +14,4 @@ obj-y				+= setup.o bte.o bte_error.o irq.o mca.o idle.o \
 				   io_init.o iomv.o klconflib.o pio_phys.o \
 				   sn2/
 obj-$(CONFIG_IA64_GENERIC)      += machvec.o
-obj-$(CONFIG_SGI_TIOCX)		+= tiocx.o
 obj-$(CONFIG_PCI_MSI)		+= msi_sn.o
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
deleted file mode 100644
index 32d0380eb72e..000000000000
--- a/arch/ia64/sn/kernel/tiocx.c
+++ /dev/null
@@ -1,569 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc.  All rights reserved.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/proc_fs.h>
-#include <linux/capability.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/io.h>
-#include <asm/sn/types.h>
-#include <asm/sn/shubio.h>
-#include <asm/sn/tiocx.h>
-#include <asm/sn/l1.h>
-#include <asm/sn/module.h>
-#include "tio.h"
-#include "xtalk/xwidgetdev.h"
-#include "xtalk/hubdev.h"
-
-#define CX_DEV_NONE 0
-#define DEVICE_NAME "tiocx"
-#define WIDGET_ID 0
-#define TIOCX_DEBUG 0
-
-#if TIOCX_DEBUG
-#define DBG(fmt...)    printk(KERN_ALERT fmt)
-#else
-#define DBG(fmt...)
-#endif
-
-struct device_attribute dev_attr_cxdev_control;
-
-/**
- * tiocx_match - Try to match driver id list with device.
- * @dev: device pointer
- * @drv: driver pointer
- *
- * Returns 1 if match, 0 otherwise.
- */
-static int tiocx_match(struct device *dev, struct device_driver *drv)
-{
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	struct cx_drv *cx_drv = to_cx_driver(drv);
-	const struct cx_device_id *ids = cx_drv->id_table;
-
-	if (!ids)
-		return 0;
-
-	while (ids->part_num) {
-		if (ids->part_num == cx_dev->cx_id.part_num)
-			return 1;
-		ids++;
-	}
-	return 0;
-
-}
-
-static int tiocx_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
-	return -ENODEV;
-}
-
-static void tiocx_bus_release(struct device *dev)
-{
-	kfree(to_cx_dev(dev));
-}
-
-/**
- * cx_device_match - Find cx_device in the id table.
- * @ids: id table from driver
- * @cx_device: part/mfg id for the device
- *
- */
-static const struct cx_device_id *cx_device_match(const struct cx_device_id
-						  *ids,
-						  struct cx_dev *cx_device)
-{
-	/*
-	 * NOTES: We may want to check for CX_ANY_ID too.
-	 *        Do we want to match against nasid too?
-	 *        CX_DEV_NONE == 0, if the driver tries to register for
-	 *        part/mfg == 0 we should return no-match (NULL) here.
-	 */
-	while (ids->part_num && ids->mfg_num) {
-		if (ids->part_num == cx_device->cx_id.part_num &&
-		    ids->mfg_num == cx_device->cx_id.mfg_num)
-			return ids;
-		ids++;
-	}
-
-	return NULL;
-}
-
-/**
- * cx_device_probe - Look for matching device.
- *			Call driver probe routine if found.
- * @cx_driver: driver table (cx_drv struct) from driver
- * @cx_device: part/mfg id for the device
- */
-static int cx_device_probe(struct device *dev)
-{
-	const struct cx_device_id *id;
-	struct cx_drv *cx_drv = to_cx_driver(dev->driver);
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	int error = 0;
-
-	if (!cx_dev->driver && cx_drv->probe) {
-		id = cx_device_match(cx_drv->id_table, cx_dev);
-		if (id) {
-			if ((error = cx_drv->probe(cx_dev, id)) < 0)
-				return error;
-			else
-				cx_dev->driver = cx_drv;
-		}
-	}
-
-	return error;
-}
-
-/**
- * cx_driver_remove - Remove driver from device struct.
- * @dev: device
- */
-static int cx_driver_remove(struct device *dev)
-{
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	struct cx_drv *cx_drv = cx_dev->driver;
-	if (cx_drv->remove)
-		cx_drv->remove(cx_dev);
-	cx_dev->driver = NULL;
-	return 0;
-}
-
-struct bus_type tiocx_bus_type = {
-	.name = "tiocx",
-	.match = tiocx_match,
-	.uevent = tiocx_uevent,
-	.probe = cx_device_probe,
-	.remove = cx_driver_remove,
-};
-
-/**
- * cx_driver_register - Register the driver.
- * @cx_driver: driver table (cx_drv struct) from driver
- * 
- * Called from the driver init routine to register a driver.
- * The cx_drv struct contains the driver name, a pointer to
- * a table of part/mfg numbers and a pointer to the driver's
- * probe/attach routine.
- */
-int cx_driver_register(struct cx_drv *cx_driver)
-{
-	cx_driver->driver.name = cx_driver->name;
-	cx_driver->driver.bus = &tiocx_bus_type;
-
-	return driver_register(&cx_driver->driver);
-}
-
-/**
- * cx_driver_unregister - Unregister the driver.
- * @cx_driver: driver table (cx_drv struct) from driver
- */
-int cx_driver_unregister(struct cx_drv *cx_driver)
-{
-	driver_unregister(&cx_driver->driver);
-	return 0;
-}
-
-/**
- * cx_device_register - Register a device.
- * @nasid: device's nasid
- * @part_num: device's part number
- * @mfg_num: device's manufacturer number
- * @hubdev: hub info associated with this device
- * @bt: board type of the device
- *
- */
-int
-cx_device_register(nasid_t nasid, int part_num, int mfg_num,
-		   struct hubdev_info *hubdev, int bt)
-{
-	struct cx_dev *cx_dev;
-	int r;
-
-	cx_dev = kzalloc(sizeof(struct cx_dev), GFP_KERNEL);
-	DBG("cx_dev= 0x%p\n", cx_dev);
-	if (cx_dev == NULL)
-		return -ENOMEM;
-
-	cx_dev->cx_id.part_num = part_num;
-	cx_dev->cx_id.mfg_num = mfg_num;
-	cx_dev->cx_id.nasid = nasid;
-	cx_dev->hubdev = hubdev;
-	cx_dev->bt = bt;
-
-	cx_dev->dev.parent = NULL;
-	cx_dev->dev.bus = &tiocx_bus_type;
-	cx_dev->dev.release = tiocx_bus_release;
-	dev_set_name(&cx_dev->dev, "%d", cx_dev->cx_id.nasid);
-	r = device_register(&cx_dev->dev);
-	if (r) {
-		kfree(cx_dev);
-		return r;
-	}
-	get_device(&cx_dev->dev);
-
-	device_create_file(&cx_dev->dev, &dev_attr_cxdev_control);
-
-	return 0;
-}
-
-/**
- * cx_device_unregister - Unregister a device.
- * @cx_dev: part/mfg id for the device
- */
-int cx_device_unregister(struct cx_dev *cx_dev)
-{
-	put_device(&cx_dev->dev);
-	device_unregister(&cx_dev->dev);
-	return 0;
-}
-
-/**
- * cx_device_reload - Reload the device.
- * @nasid: device's nasid
- * @part_num: device's part number
- * @mfg_num: device's manufacturer number
- *
- * Remove the device associated with 'nasid' from device list and then
- * call device-register with the given part/mfg numbers.
- */
-static int cx_device_reload(struct cx_dev *cx_dev)
-{
-	cx_device_unregister(cx_dev);
-	return cx_device_register(cx_dev->cx_id.nasid, cx_dev->cx_id.part_num,
-				  cx_dev->cx_id.mfg_num, cx_dev->hubdev,
-				  cx_dev->bt);
-}
-
-static inline u64 tiocx_intr_alloc(nasid_t nasid, int widget,
-					u64 sn_irq_info,
-					int req_irq, nasid_t req_nasid,
-					int req_slice)
-{
-	struct ia64_sal_retval rv;
-	rv.status = 0;
-	rv.v0 = 0;
-
-	ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT,
-				SAL_INTR_ALLOC, nasid,
-				widget, sn_irq_info, req_irq,
-				req_nasid, req_slice);
-	return rv.status;
-}
-
-static inline void tiocx_intr_free(nasid_t nasid, int widget,
-				   struct sn_irq_info *sn_irq_info)
-{
-	struct ia64_sal_retval rv;
-	rv.status = 0;
-	rv.v0 = 0;
-
-	ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT,
-				SAL_INTR_FREE, nasid,
-				widget, sn_irq_info->irq_irq,
-				sn_irq_info->irq_cookie, 0, 0);
-}
-
-struct sn_irq_info *tiocx_irq_alloc(nasid_t nasid, int widget, int irq,
-				    nasid_t req_nasid, int slice)
-{
-	struct sn_irq_info *sn_irq_info;
-	int status;
-	int sn_irq_size = sizeof(struct sn_irq_info);
-
-	if ((nasid & 1) == 0)
-		return NULL;
-
-	sn_irq_info = kzalloc(sn_irq_size, GFP_KERNEL);
-	if (sn_irq_info == NULL)
-		return NULL;
-
-	status = tiocx_intr_alloc(nasid, widget, __pa(sn_irq_info), irq,
-				  req_nasid, slice);
-	if (status) {
-		kfree(sn_irq_info);
-		return NULL;
-	} else {
-		return sn_irq_info;
-	}
-}
-
-void tiocx_irq_free(struct sn_irq_info *sn_irq_info)
-{
-	u64 bridge = (u64) sn_irq_info->irq_bridge;
-	nasid_t nasid = NASID_GET(bridge);
-	int widget;
-
-	if (nasid & 1) {
-		widget = TIO_SWIN_WIDGETNUM(bridge);
-		tiocx_intr_free(nasid, widget, sn_irq_info);
-		kfree(sn_irq_info);
-	}
-}
-
-u64 tiocx_dma_addr(u64 addr)
-{
-	return PHYS_TO_TIODMA(addr);
-}
-
-u64 tiocx_swin_base(int nasid)
-{
-	return TIO_SWIN_BASE(nasid, TIOCX_CORELET);
-}
-
-EXPORT_SYMBOL(cx_driver_register);
-EXPORT_SYMBOL(cx_driver_unregister);
-EXPORT_SYMBOL(cx_device_register);
-EXPORT_SYMBOL(cx_device_unregister);
-EXPORT_SYMBOL(tiocx_irq_alloc);
-EXPORT_SYMBOL(tiocx_irq_free);
-EXPORT_SYMBOL(tiocx_bus_type);
-EXPORT_SYMBOL(tiocx_dma_addr);
-EXPORT_SYMBOL(tiocx_swin_base);
-
-static void tio_conveyor_set(nasid_t nasid, int enable_flag)
-{
-	u64 ice_frz;
-	u64 disable_cb = (1ull << 61);
-
-	if (!(nasid & 1))
-		return;
-
-	ice_frz = REMOTE_HUB_L(nasid, TIO_ICE_FRZ_CFG);
-	if (enable_flag) {
-		if (!(ice_frz & disable_cb))	/* already enabled */
-			return;
-		ice_frz &= ~disable_cb;
-	} else {
-		if (ice_frz & disable_cb)	/* already disabled */
-			return;
-		ice_frz |= disable_cb;
-	}
-	DBG(KERN_ALERT "TIO_ICE_FRZ_CFG= 0x%lx\n", ice_frz);
-	REMOTE_HUB_S(nasid, TIO_ICE_FRZ_CFG, ice_frz);
-}
-
-#define tio_conveyor_enable(nasid) tio_conveyor_set(nasid, 1)
-#define tio_conveyor_disable(nasid) tio_conveyor_set(nasid, 0)
-
-static void tio_corelet_reset(nasid_t nasid, int corelet)
-{
-	if (!(nasid & 1))
-		return;
-
-	REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 1 << corelet);
-	udelay(2000);
-	REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 0);
-	udelay(2000);
-}
-
-static int is_fpga_tio(int nasid, int *bt)
-{
-	u16 uninitialized_var(ioboard_type);	/* GCC be quiet */
-	long rc;
-
-	rc = ia64_sn_sysctl_ioboard_get(nasid, &ioboard_type);
-	if (rc) {
-		printk(KERN_WARNING "ia64_sn_sysctl_ioboard_get failed: %ld\n",
-		       rc);
-		return 0;
-	}
-
-	switch (ioboard_type) {
-	case L1_BRICKTYPE_SA:
-	case L1_BRICKTYPE_ATHENA:
-	case L1_BOARDTYPE_DAYTONA:
-		*bt = ioboard_type;
-		return 1;
-	}
-
-	return 0;
-}
-
-static int bitstream_loaded(nasid_t nasid)
-{
-	u64 cx_credits;
-
-	cx_credits = REMOTE_HUB_L(nasid, TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3);
-	cx_credits &= TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3_CREDIT_CNT_MASK;
-	DBG("cx_credits= 0x%lx\n", cx_credits);
-
-	return (cx_credits == 0xf) ? 1 : 0;
-}
-
-static int tiocx_reload(struct cx_dev *cx_dev)
-{
-	int part_num = CX_DEV_NONE;
-	int mfg_num = CX_DEV_NONE;
-	nasid_t nasid = cx_dev->cx_id.nasid;
-
-	if (bitstream_loaded(nasid)) {
-		u64 cx_id;
-		int rv;
-
-		rv = ia64_sn_sysctl_tio_clock_reset(nasid);
-		if (rv) {
-			printk(KERN_ALERT "CX port JTAG reset failed.\n");
-		} else {
-			cx_id = *(volatile u64 *)
-				(TIO_SWIN_BASE(nasid, TIOCX_CORELET) +
-					  WIDGET_ID);
-			part_num = XWIDGET_PART_NUM(cx_id);
-			mfg_num = XWIDGET_MFG_NUM(cx_id);
-			DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num);
-			/* just ignore it if it's a CE */
-			if (part_num == TIO_CE_ASIC_PARTNUM)
-				return 0;
-		}
-	}
-
-	cx_dev->cx_id.part_num = part_num;
-	cx_dev->cx_id.mfg_num = mfg_num;
-
-	/*
-	 * Delete old device and register the new one.  It's ok if
-	 * part_num/mfg_num == CX_DEV_NONE.  We want to register
-	 * devices in the table even if a bitstream isn't loaded.
-	 * That allows use to see that a bitstream isn't loaded via
-	 * TIOCX_IOCTL_DEV_LIST.
-	 */
-	return cx_device_reload(cx_dev);
-}
-
-static ssize_t show_cxdev_control(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-
-	return sprintf(buf, "0x%x 0x%x 0x%x 0x%x\n",
-		       cx_dev->cx_id.nasid,
-		       cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num,
-		       cx_dev->bt);
-}
-
-static ssize_t store_cxdev_control(struct device *dev, struct device_attribute *attr, const char *buf,
-				   size_t count)
-{
-	int n;
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
-	if (count <= 0)
-		return 0;
-
-	n = simple_strtoul(buf, NULL, 0);
-
-	switch (n) {
-	case 1:
-		tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET);
-		tiocx_reload(cx_dev);
-		break;
-	case 2:
-		tiocx_reload(cx_dev);
-		break;
-	case 3:
-		tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET);
-		break;
-	default:
-		break;
-	}
-
-	return count;
-}
-
-DEVICE_ATTR(cxdev_control, 0644, show_cxdev_control, store_cxdev_control);
-
-static int __init tiocx_init(void)
-{
-	cnodeid_t cnodeid;
-	int found_tiocx_device = 0;
-	int err;
-
-	if (!ia64_platform_is("sn2"))
-		return 0;
-
-	err = bus_register(&tiocx_bus_type);
-	if (err)
-		return err;
-
-	for (cnodeid = 0; cnodeid < num_cnodes; cnodeid++) {
-		nasid_t nasid;
-		int bt;
-
-		nasid = cnodeid_to_nasid(cnodeid);
-
-		if ((nasid & 0x1) && is_fpga_tio(nasid, &bt)) {
-			struct hubdev_info *hubdev;
-			struct xwidget_info *widgetp;
-
-			DBG("Found TIO at nasid 0x%x\n", nasid);
-
-			hubdev =
-			    (struct hubdev_info *)(NODEPDA(cnodeid)->pdinfo);
-
-			widgetp = &hubdev->hdi_xwidget_info[TIOCX_CORELET];
-
-			/* The CE hangs off of the CX port but is not an FPGA */
-			if (widgetp->xwi_hwid.part_num == TIO_CE_ASIC_PARTNUM)
-				continue;
-
-			tio_corelet_reset(nasid, TIOCX_CORELET);
-			tio_conveyor_enable(nasid);
-
-			if (cx_device_register
-			    (nasid, widgetp->xwi_hwid.part_num,
-			     widgetp->xwi_hwid.mfg_num, hubdev, bt) < 0)
-				return -ENXIO;
-			else
-				found_tiocx_device++;
-		}
-	}
-
-	/* It's ok if we find zero devices. */
-	DBG("found_tiocx_device= %d\n", found_tiocx_device);
-
-	return 0;
-}
-
-static int cx_remove_device(struct device * dev, void * data)
-{
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	device_remove_file(dev, &dev_attr_cxdev_control);
-	cx_device_unregister(cx_dev);
-	return 0;
-}
-
-static void __exit tiocx_exit(void)
-{
-	DBG("tiocx_exit\n");
-
-	/*
-	 * Unregister devices.
-	 */
-	bus_for_each_dev(&tiocx_bus_type, NULL, NULL, cx_remove_device);
-	bus_unregister(&tiocx_bus_type);
-}
-
-fs_initcall(tiocx_init);
-module_exit(tiocx_exit);
-
-/************************************************************************
- * Module licensing and description
- ************************************************************************/
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>");
-MODULE_DESCRIPTION("TIOCX module");
-MODULE_SUPPORTED_DEVICE(DEVICE_NAME);
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index c9fbbc6a3967..96156c729a31 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -26,20 +26,6 @@ config DEVKMEM
 	  kind of kernel debugging operations.
 	  When in doubt, say "N".
 
-config SGI_TIOCX
-       bool "SGI TIO CX driver support"
-       depends on (IA64_SGI_SN2 || IA64_GENERIC)
-       help
-         If you have an SGI Altix and you have fpga devices attached
-         to your TIO, say Y here, otherwise say N.
-
-config SGI_MBCS
-       tristate "SGI FPGA Core Services driver support"
-       depends on SGI_TIOCX
-       help
-         If you have an SGI Altix with an attached SABrick
-         say Y or M here, otherwise say N.
-
 source "drivers/tty/serial/Kconfig"
 source "drivers/tty/serdev/Kconfig"
 
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 50835d420471..7c5ea6f9df14 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_RAW_DRIVER)	+= raw.o
 obj-$(CONFIG_MSPEC)		+= mspec.o
 obj-$(CONFIG_UV_MMTIMER)	+= uv_mmtimer.o
 obj-$(CONFIG_IBM_BSR)		+= bsr.o
-obj-$(CONFIG_SGI_MBCS)		+= mbcs.o
 
 obj-$(CONFIG_PRINTER)		+= lp.o
 
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
deleted file mode 100644
index 0a31b60bee7b..000000000000
--- a/drivers/char/mbcs.c
+++ /dev/null
@@ -1,831 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc.  All rights reserved.
- */
-
-/*
- *	MOATB Core Services driver.
- */
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/mm.h>
-#include <linux/uio.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <asm/io.h>
-#include <linux/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/intr.h>
-#include <asm/sn/tiocx.h>
-#include "mbcs.h"
-
-#define MBCS_DEBUG 0
-#if MBCS_DEBUG
-#define DBG(fmt...)    printk(KERN_ALERT fmt)
-#else
-#define DBG(fmt...)
-#endif
-static DEFINE_MUTEX(mbcs_mutex);
-static int mbcs_major;
-
-static LIST_HEAD(soft_list);
-
-/*
- * file operations
- */
-static const struct file_operations mbcs_ops = {
-	.owner = THIS_MODULE,
-	.open = mbcs_open,
-	.llseek = mbcs_sram_llseek,
-	.read = mbcs_sram_read,
-	.write = mbcs_sram_write,
-	.mmap = mbcs_gscr_mmap,
-};
-
-struct mbcs_callback_arg {
-	int minor;
-	struct cx_dev *cx_dev;
-};
-
-static inline void mbcs_getdma_init(struct getdma *gdma)
-{
-	memset(gdma, 0, sizeof(struct getdma));
-	gdma->DoneIntEnable = 1;
-}
-
-static inline void mbcs_putdma_init(struct putdma *pdma)
-{
-	memset(pdma, 0, sizeof(struct putdma));
-	pdma->DoneIntEnable = 1;
-}
-
-static inline void mbcs_algo_init(struct algoblock *algo_soft)
-{
-	memset(algo_soft, 0, sizeof(struct algoblock));
-}
-
-static inline void mbcs_getdma_set(void *mmr,
-		       uint64_t hostAddr,
-		       uint64_t localAddr,
-		       uint64_t localRamSel,
-		       uint64_t numPkts,
-		       uint64_t amoEnable,
-		       uint64_t intrEnable,
-		       uint64_t peerIO,
-		       uint64_t amoHostDest,
-		       uint64_t amoModType, uint64_t intrHostDest,
-		       uint64_t intrVector)
-{
-	union dma_control rdma_control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union dma_localaddr local_addr;
-	union dma_hostaddr host_addr;
-
-	rdma_control.dma_control_reg = 0;
-	amo_dest.dma_amo_dest_reg = 0;
-	intr_dest.intr_dest_reg = 0;
-	local_addr.dma_localaddr_reg = 0;
-	host_addr.dma_hostaddr_reg = 0;
-
-	host_addr.dma_sys_addr = hostAddr;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
-
-	local_addr.dma_ram_addr = localAddr;
-	local_addr.dma_ram_sel = localRamSel;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
-
-	rdma_control.dma_op_length = numPkts;
-	rdma_control.done_amo_en = amoEnable;
-	rdma_control.done_int_en = intrEnable;
-	rdma_control.pio_mem_n = peerIO;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_CTRL, rdma_control.dma_control_reg);
-
-	amo_dest.dma_amo_sys_addr = amoHostDest;
-	amo_dest.dma_amo_mod_type = amoModType;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
-	intr_dest.address = intrHostDest;
-	intr_dest.int_vector = intrVector;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_INT_DEST, intr_dest.intr_dest_reg);
-
-}
-
-static inline void mbcs_putdma_set(void *mmr,
-		       uint64_t hostAddr,
-		       uint64_t localAddr,
-		       uint64_t localRamSel,
-		       uint64_t numPkts,
-		       uint64_t amoEnable,
-		       uint64_t intrEnable,
-		       uint64_t peerIO,
-		       uint64_t amoHostDest,
-		       uint64_t amoModType,
-		       uint64_t intrHostDest, uint64_t intrVector)
-{
-	union dma_control wdma_control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union dma_localaddr local_addr;
-	union dma_hostaddr host_addr;
-
-	wdma_control.dma_control_reg = 0;
-	amo_dest.dma_amo_dest_reg = 0;
-	intr_dest.intr_dest_reg = 0;
-	local_addr.dma_localaddr_reg = 0;
-	host_addr.dma_hostaddr_reg = 0;
-
-	host_addr.dma_sys_addr = hostAddr;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
-
-	local_addr.dma_ram_addr = localAddr;
-	local_addr.dma_ram_sel = localRamSel;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
-
-	wdma_control.dma_op_length = numPkts;
-	wdma_control.done_amo_en = amoEnable;
-	wdma_control.done_int_en = intrEnable;
-	wdma_control.pio_mem_n = peerIO;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_CTRL, wdma_control.dma_control_reg);
-
-	amo_dest.dma_amo_sys_addr = amoHostDest;
-	amo_dest.dma_amo_mod_type = amoModType;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
-	intr_dest.address = intrHostDest;
-	intr_dest.int_vector = intrVector;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_INT_DEST, intr_dest.intr_dest_reg);
-
-}
-
-static inline void mbcs_algo_set(void *mmr,
-		     uint64_t amoHostDest,
-		     uint64_t amoModType,
-		     uint64_t intrHostDest,
-		     uint64_t intrVector, uint64_t algoStepCount)
-{
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union algo_step step;
-
-	step.algo_step_reg = 0;
-	intr_dest.intr_dest_reg = 0;
-	amo_dest.dma_amo_dest_reg = 0;
-
-	amo_dest.dma_amo_sys_addr = amoHostDest;
-	amo_dest.dma_amo_mod_type = amoModType;
-	MBCS_MMR_SET(mmr, MBCS_ALG_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
-	intr_dest.address = intrHostDest;
-	intr_dest.int_vector = intrVector;
-	MBCS_MMR_SET(mmr, MBCS_ALG_INT_DEST, intr_dest.intr_dest_reg);
-
-	step.alg_step_cnt = algoStepCount;
-	MBCS_MMR_SET(mmr, MBCS_ALG_STEP, step.algo_step_reg);
-}
-
-static inline int mbcs_getdma_start(struct mbcs_soft *soft)
-{
-	void *mmr_base;
-	struct getdma *gdma;
-	uint64_t numPkts;
-	union cm_control cm_control;
-
-	mmr_base = soft->mmr_base;
-	gdma = &soft->getdma;
-
-	/* check that host address got setup */
-	if (!gdma->hostAddr)
-		return -1;
-
-	numPkts =
-	    (gdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
-
-	/* program engine */
-	mbcs_getdma_set(mmr_base, tiocx_dma_addr(gdma->hostAddr),
-		   gdma->localAddr,
-		   (gdma->localAddr < MB2) ? 0 :
-		   (gdma->localAddr < MB4) ? 1 :
-		   (gdma->localAddr < MB6) ? 2 : 3,
-		   numPkts,
-		   gdma->DoneAmoEnable,
-		   gdma->DoneIntEnable,
-		   gdma->peerIO,
-		   gdma->amoHostDest,
-		   gdma->amoModType,
-		   gdma->intrHostDest, gdma->intrVector);
-
-	/* start engine */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.rd_dma_go = 1;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	return 0;
-
-}
-
-static inline int mbcs_putdma_start(struct mbcs_soft *soft)
-{
-	void *mmr_base;
-	struct putdma *pdma;
-	uint64_t numPkts;
-	union cm_control cm_control;
-
-	mmr_base = soft->mmr_base;
-	pdma = &soft->putdma;
-
-	/* check that host address got setup */
-	if (!pdma->hostAddr)
-		return -1;
-
-	numPkts =
-	    (pdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
-
-	/* program engine */
-	mbcs_putdma_set(mmr_base, tiocx_dma_addr(pdma->hostAddr),
-		   pdma->localAddr,
-		   (pdma->localAddr < MB2) ? 0 :
-		   (pdma->localAddr < MB4) ? 1 :
-		   (pdma->localAddr < MB6) ? 2 : 3,
-		   numPkts,
-		   pdma->DoneAmoEnable,
-		   pdma->DoneIntEnable,
-		   pdma->peerIO,
-		   pdma->amoHostDest,
-		   pdma->amoModType,
-		   pdma->intrHostDest, pdma->intrVector);
-
-	/* start engine */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.wr_dma_go = 1;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	return 0;
-
-}
-
-static inline int mbcs_algo_start(struct mbcs_soft *soft)
-{
-	struct algoblock *algo_soft = &soft->algo;
-	void *mmr_base = soft->mmr_base;
-	union cm_control cm_control;
-
-	if (mutex_lock_interruptible(&soft->algolock))
-		return -ERESTARTSYS;
-
-	atomic_set(&soft->algo_done, 0);
-
-	mbcs_algo_set(mmr_base,
-		 algo_soft->amoHostDest,
-		 algo_soft->amoModType,
-		 algo_soft->intrHostDest,
-		 algo_soft->intrVector, algo_soft->algoStepCount);
-
-	/* start algorithm */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.alg_done_int_en = 1;
-	cm_control.alg_go = 1;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	mutex_unlock(&soft->algolock);
-
-	return 0;
-}
-
-static inline ssize_t
-do_mbcs_sram_dmawrite(struct mbcs_soft *soft, uint64_t hostAddr,
-		      size_t len, loff_t * off)
-{
-	int rv = 0;
-
-	if (mutex_lock_interruptible(&soft->dmawritelock))
-		return -ERESTARTSYS;
-
-	atomic_set(&soft->dmawrite_done, 0);
-
-	soft->putdma.hostAddr = hostAddr;
-	soft->putdma.localAddr = *off;
-	soft->putdma.bytes = len;
-
-	if (mbcs_putdma_start(soft) < 0) {
-		DBG(KERN_ALERT "do_mbcs_sram_dmawrite: "
-					"mbcs_putdma_start failed\n");
-		rv = -EAGAIN;
-		goto dmawrite_exit;
-	}
-
-	if (wait_event_interruptible(soft->dmawrite_queue,
-					atomic_read(&soft->dmawrite_done))) {
-		rv = -ERESTARTSYS;
-		goto dmawrite_exit;
-	}
-
-	rv = len;
-	*off += len;
-
-dmawrite_exit:
-	mutex_unlock(&soft->dmawritelock);
-
-	return rv;
-}
-
-static inline ssize_t
-do_mbcs_sram_dmaread(struct mbcs_soft *soft, uint64_t hostAddr,
-		     size_t len, loff_t * off)
-{
-	int rv = 0;
-
-	if (mutex_lock_interruptible(&soft->dmareadlock))
-		return -ERESTARTSYS;
-
-	atomic_set(&soft->dmawrite_done, 0);
-
-	soft->getdma.hostAddr = hostAddr;
-	soft->getdma.localAddr = *off;
-	soft->getdma.bytes = len;
-
-	if (mbcs_getdma_start(soft) < 0) {
-		DBG(KERN_ALERT "mbcs_strategy: mbcs_getdma_start failed\n");
-		rv = -EAGAIN;
-		goto dmaread_exit;
-	}
-
-	if (wait_event_interruptible(soft->dmaread_queue,
-					atomic_read(&soft->dmaread_done))) {
-		rv = -ERESTARTSYS;
-		goto dmaread_exit;
-	}
-
-	rv = len;
-	*off += len;
-
-dmaread_exit:
-	mutex_unlock(&soft->dmareadlock);
-
-	return rv;
-}
-
-static int mbcs_open(struct inode *ip, struct file *fp)
-{
-	struct mbcs_soft *soft;
-	int minor;
-
-	mutex_lock(&mbcs_mutex);
-	minor = iminor(ip);
-
-	/* Nothing protects access to this list... */
-	list_for_each_entry(soft, &soft_list, list) {
-		if (soft->nasid == minor) {
-			fp->private_data = soft->cxdev;
-			mutex_unlock(&mbcs_mutex);
-			return 0;
-		}
-	}
-
-	mutex_unlock(&mbcs_mutex);
-	return -ENODEV;
-}
-
-static ssize_t mbcs_sram_read(struct file * fp, char __user *buf, size_t len, loff_t * off)
-{
-	struct cx_dev *cx_dev = fp->private_data;
-	struct mbcs_soft *soft = cx_dev->soft;
-	uint64_t hostAddr;
-	int rv = 0;
-
-	hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
-	if (hostAddr == 0)
-		return -ENOMEM;
-
-	rv = do_mbcs_sram_dmawrite(soft, hostAddr, len, off);
-	if (rv < 0)
-		goto exit;
-
-	if (copy_to_user(buf, (void *)hostAddr, len))
-		rv = -EFAULT;
-
-      exit:
-	free_pages(hostAddr, get_order(len));
-
-	return rv;
-}
-
-static ssize_t
-mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * off)
-{
-	struct cx_dev *cx_dev = fp->private_data;
-	struct mbcs_soft *soft = cx_dev->soft;
-	uint64_t hostAddr;
-	int rv = 0;
-
-	hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
-	if (hostAddr == 0)
-		return -ENOMEM;
-
-	if (copy_from_user((void *)hostAddr, buf, len)) {
-		rv = -EFAULT;
-		goto exit;
-	}
-
-	rv = do_mbcs_sram_dmaread(soft, hostAddr, len, off);
-
-      exit:
-	free_pages(hostAddr, get_order(len));
-
-	return rv;
-}
-
-static loff_t mbcs_sram_llseek(struct file * filp, loff_t off, int whence)
-{
-	return generic_file_llseek_size(filp, off, whence, MAX_LFS_FILESIZE,
-					MBCS_SRAM_SIZE);
-}
-
-static uint64_t mbcs_pioaddr(struct mbcs_soft *soft, uint64_t offset)
-{
-	uint64_t mmr_base;
-
-	mmr_base = (uint64_t) (soft->mmr_base + offset);
-
-	return mmr_base;
-}
-
-static void mbcs_debug_pioaddr_set(struct mbcs_soft *soft)
-{
-	soft->debug_addr = mbcs_pioaddr(soft, MBCS_DEBUG_START);
-}
-
-static void mbcs_gscr_pioaddr_set(struct mbcs_soft *soft)
-{
-	soft->gscr_addr = mbcs_pioaddr(soft, MBCS_GSCR_START);
-}
-
-static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma)
-{
-	struct cx_dev *cx_dev = fp->private_data;
-	struct mbcs_soft *soft = cx_dev->soft;
-
-	if (vma->vm_pgoff != 0)
-		return -EINVAL;
-
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
-	/* Remap-pfn-range will mark the range VM_IO */
-	if (remap_pfn_range(vma,
-			    vma->vm_start,
-			    __pa(soft->gscr_addr) >> PAGE_SHIFT,
-			    PAGE_SIZE,
-			    vma->vm_page_prot))
-		return -EAGAIN;
-
-	return 0;
-}
-
-/**
- * mbcs_completion_intr_handler - Primary completion handler.
- * @irq: irq
- * @arg: soft struct for device
- *
- */
-static irqreturn_t
-mbcs_completion_intr_handler(int irq, void *arg)
-{
-	struct mbcs_soft *soft = (struct mbcs_soft *)arg;
-	void *mmr_base;
-	union cm_status cm_status;
-	union cm_control cm_control;
-
-	mmr_base = soft->mmr_base;
-	cm_status.cm_status_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_STATUS);
-
-	if (cm_status.rd_dma_done) {
-		/* stop dma-read engine, clear status */
-		cm_control.cm_control_reg =
-		    MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-		cm_control.rd_dma_clr = 1;
-		MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
-			     cm_control.cm_control_reg);
-		atomic_set(&soft->dmaread_done, 1);
-		wake_up(&soft->dmaread_queue);
-	}
-	if (cm_status.wr_dma_done) {
-		/* stop dma-write engine, clear status */
-		cm_control.cm_control_reg =
-		    MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-		cm_control.wr_dma_clr = 1;
-		MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
-			     cm_control.cm_control_reg);
-		atomic_set(&soft->dmawrite_done, 1);
-		wake_up(&soft->dmawrite_queue);
-	}
-	if (cm_status.alg_done) {
-		/* clear status */
-		cm_control.cm_control_reg =
-		    MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-		cm_control.alg_done_clr = 1;
-		MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
-			     cm_control.cm_control_reg);
-		atomic_set(&soft->algo_done, 1);
-		wake_up(&soft->algo_queue);
-	}
-
-	return IRQ_HANDLED;
-}
-
-/**
- * mbcs_intr_alloc - Allocate interrupts.
- * @dev: device pointer
- *
- */
-static int mbcs_intr_alloc(struct cx_dev *dev)
-{
-	struct sn_irq_info *sn_irq;
-	struct mbcs_soft *soft;
-	struct getdma *getdma;
-	struct putdma *putdma;
-	struct algoblock *algo;
-
-	soft = dev->soft;
-	getdma = &soft->getdma;
-	putdma = &soft->putdma;
-	algo = &soft->algo;
-
-	soft->get_sn_irq = NULL;
-	soft->put_sn_irq = NULL;
-	soft->algo_sn_irq = NULL;
-
-	sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
-	if (sn_irq == NULL)
-		return -EAGAIN;
-	soft->get_sn_irq = sn_irq;
-	getdma->intrHostDest = sn_irq->irq_xtalkaddr;
-	getdma->intrVector = sn_irq->irq_irq;
-	if (request_irq(sn_irq->irq_irq,
-			(void *)mbcs_completion_intr_handler, IRQF_SHARED,
-			"MBCS get intr", (void *)soft)) {
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-
-	sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
-	if (sn_irq == NULL) {
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-	soft->put_sn_irq = sn_irq;
-	putdma->intrHostDest = sn_irq->irq_xtalkaddr;
-	putdma->intrVector = sn_irq->irq_irq;
-	if (request_irq(sn_irq->irq_irq,
-			(void *)mbcs_completion_intr_handler, IRQF_SHARED,
-			"MBCS put intr", (void *)soft)) {
-		tiocx_irq_free(soft->put_sn_irq);
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-
-	sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
-	if (sn_irq == NULL) {
-		free_irq(soft->put_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->put_sn_irq);
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-	soft->algo_sn_irq = sn_irq;
-	algo->intrHostDest = sn_irq->irq_xtalkaddr;
-	algo->intrVector = sn_irq->irq_irq;
-	if (request_irq(sn_irq->irq_irq,
-			(void *)mbcs_completion_intr_handler, IRQF_SHARED,
-			"MBCS algo intr", (void *)soft)) {
-		tiocx_irq_free(soft->algo_sn_irq);
-		free_irq(soft->put_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->put_sn_irq);
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-
-	return 0;
-}
-
-/**
- * mbcs_intr_dealloc - Remove interrupts.
- * @dev: device pointer
- *
- */
-static void mbcs_intr_dealloc(struct cx_dev *dev)
-{
-	struct mbcs_soft *soft;
-
-	soft = dev->soft;
-
-	free_irq(soft->get_sn_irq->irq_irq, soft);
-	tiocx_irq_free(soft->get_sn_irq);
-	free_irq(soft->put_sn_irq->irq_irq, soft);
-	tiocx_irq_free(soft->put_sn_irq);
-	free_irq(soft->algo_sn_irq->irq_irq, soft);
-	tiocx_irq_free(soft->algo_sn_irq);
-}
-
-static inline int mbcs_hw_init(struct mbcs_soft *soft)
-{
-	void *mmr_base = soft->mmr_base;
-	union cm_control cm_control;
-	union cm_req_timeout cm_req_timeout;
-	uint64_t err_stat;
-
-	cm_req_timeout.cm_req_timeout_reg =
-	    MBCS_MMR_GET(mmr_base, MBCS_CM_REQ_TOUT);
-
-	cm_req_timeout.time_out = MBCS_CM_CONTROL_REQ_TOUT_MASK;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_REQ_TOUT,
-		     cm_req_timeout.cm_req_timeout_reg);
-
-	mbcs_gscr_pioaddr_set(soft);
-	mbcs_debug_pioaddr_set(soft);
-
-	/* clear errors */
-	err_stat = MBCS_MMR_GET(mmr_base, MBCS_CM_ERR_STAT);
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CLR_ERR_STAT, err_stat);
-	MBCS_MMR_ZERO(mmr_base, MBCS_CM_ERROR_DETAIL1);
-
-	/* enable interrupts */
-	/* turn off 2^23 (INT_EN_PIO_REQ_ADDR_INV) */
-	MBCS_MMR_SET(mmr_base, MBCS_CM_ERR_INT_EN, 0x3ffffff7e00ffUL);
-
-	/* arm status regs and clear engines */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.rearm_stat_regs = 1;
-	cm_control.alg_clr = 1;
-	cm_control.wr_dma_clr = 1;
-	cm_control.rd_dma_clr = 1;
-
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	return 0;
-}
-
-static ssize_t show_algo(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	struct mbcs_soft *soft = cx_dev->soft;
-	uint64_t debug0;
-
-	/*
-	 * By convention, the first debug register contains the
-	 * algorithm number and revision.
-	 */
-	debug0 = *(uint64_t *) soft->debug_addr;
-
-	return sprintf(buf, "0x%x 0x%x\n",
-		       upper_32_bits(debug0), lower_32_bits(debug0));
-}
-
-static ssize_t store_algo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
-{
-	int n;
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	struct mbcs_soft *soft = cx_dev->soft;
-
-	if (count <= 0)
-		return 0;
-
-	n = simple_strtoul(buf, NULL, 0);
-
-	if (n == 1) {
-		mbcs_algo_start(soft);
-		if (wait_event_interruptible(soft->algo_queue,
-					atomic_read(&soft->algo_done)))
-			return -ERESTARTSYS;
-	}
-
-	return count;
-}
-
-DEVICE_ATTR(algo, 0644, show_algo, store_algo);
-
-/**
- * mbcs_probe - Initialize for device
- * @dev: device pointer
- * @device_id: id table pointer
- *
- */
-static int mbcs_probe(struct cx_dev *dev, const struct cx_device_id *id)
-{
-	struct mbcs_soft *soft;
-
-	dev->soft = NULL;
-
-	soft = kzalloc(sizeof(struct mbcs_soft), GFP_KERNEL);
-	if (soft == NULL)
-		return -ENOMEM;
-
-	soft->nasid = dev->cx_id.nasid;
-	list_add(&soft->list, &soft_list);
-	soft->mmr_base = (void *)tiocx_swin_base(dev->cx_id.nasid);
-	dev->soft = soft;
-	soft->cxdev = dev;
-
-	init_waitqueue_head(&soft->dmawrite_queue);
-	init_waitqueue_head(&soft->dmaread_queue);
-	init_waitqueue_head(&soft->algo_queue);
-
-	mutex_init(&soft->dmawritelock);
-	mutex_init(&soft->dmareadlock);
-	mutex_init(&soft->algolock);
-
-	mbcs_getdma_init(&soft->getdma);
-	mbcs_putdma_init(&soft->putdma);
-	mbcs_algo_init(&soft->algo);
-
-	mbcs_hw_init(soft);
-
-	/* Allocate interrupts */
-	mbcs_intr_alloc(dev);
-
-	device_create_file(&dev->dev, &dev_attr_algo);
-
-	return 0;
-}
-
-static int mbcs_remove(struct cx_dev *dev)
-{
-	if (dev->soft) {
-		mbcs_intr_dealloc(dev);
-		kfree(dev->soft);
-	}
-
-	device_remove_file(&dev->dev, &dev_attr_algo);
-
-	return 0;
-}
-
-static const struct cx_device_id mbcs_id_table[] = {
-	{
-	 .part_num = MBCS_PART_NUM,
-	 .mfg_num = MBCS_MFG_NUM,
-	 },
-	{
-	 .part_num = MBCS_PART_NUM_ALG0,
-	 .mfg_num = MBCS_MFG_NUM,
-	 },
-	{0, 0}
-};
-
-MODULE_DEVICE_TABLE(cx, mbcs_id_table);
-
-static struct cx_drv mbcs_driver = {
-	.name = DEVICE_NAME,
-	.id_table = mbcs_id_table,
-	.probe = mbcs_probe,
-	.remove = mbcs_remove,
-};
-
-static void __exit mbcs_exit(void)
-{
-	unregister_chrdev(mbcs_major, DEVICE_NAME);
-	cx_driver_unregister(&mbcs_driver);
-}
-
-static int __init mbcs_init(void)
-{
-	int rv;
-
-	if (!ia64_platform_is("sn2"))
-		return -ENODEV;
-
-	// Put driver into chrdevs[].  Get major number.
-	rv = register_chrdev(mbcs_major, DEVICE_NAME, &mbcs_ops);
-	if (rv < 0) {
-		DBG(KERN_ALERT "mbcs_init: can't get major number. %d\n", rv);
-		return rv;
-	}
-	mbcs_major = rv;
-
-	return cx_driver_register(&mbcs_driver);
-}
-
-module_init(mbcs_init);
-module_exit(mbcs_exit);
-
-MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>");
-MODULE_DESCRIPTION("Driver for MOATB Core Services");
-MODULE_LICENSE("GPL");
diff --git a/drivers/char/mbcs.h b/drivers/char/mbcs.h
deleted file mode 100644
index 1a36884c48b5..000000000000
--- a/drivers/char/mbcs.h
+++ /dev/null
@@ -1,553 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc.  All rights reserved.
- */
-
-#ifndef __MBCS_H__
-#define __MBCS_H__
-
-/*
- * General macros
- */
-#define MB	(1024*1024)
-#define MB2	(2*MB)
-#define MB4	(4*MB)
-#define MB6	(6*MB)
-
-/*
- * Offsets and masks
- */
-#define MBCS_CM_ID		0x0000	/* Identification */
-#define MBCS_CM_STATUS		0x0008	/* Status */
-#define MBCS_CM_ERROR_DETAIL1	0x0010	/* Error Detail1 */
-#define MBCS_CM_ERROR_DETAIL2	0x0018	/* Error Detail2 */
-#define MBCS_CM_CONTROL		0x0020	/* Control */
-#define MBCS_CM_REQ_TOUT	0x0028	/* Request Time-out */
-#define MBCS_CM_ERR_INT_DEST	0x0038	/* Error Interrupt Destination */
-#define MBCS_CM_TARG_FL		0x0050	/* Target Flush */
-#define MBCS_CM_ERR_STAT	0x0060	/* Error Status */
-#define MBCS_CM_CLR_ERR_STAT	0x0068	/* Clear Error Status */
-#define MBCS_CM_ERR_INT_EN	0x0070	/* Error Interrupt Enable */
-#define MBCS_RD_DMA_SYS_ADDR	0x0100	/* Read DMA System Address */
-#define MBCS_RD_DMA_LOC_ADDR	0x0108	/* Read DMA Local Address */
-#define MBCS_RD_DMA_CTRL	0x0110	/* Read DMA Control */
-#define MBCS_RD_DMA_AMO_DEST	0x0118	/* Read DMA AMO Destination */
-#define MBCS_RD_DMA_INT_DEST	0x0120	/* Read DMA Interrupt Destination */
-#define MBCS_RD_DMA_AUX_STAT	0x0130	/* Read DMA Auxiliary Status */
-#define MBCS_WR_DMA_SYS_ADDR	0x0200	/* Write DMA System Address */
-#define MBCS_WR_DMA_LOC_ADDR	0x0208	/* Write DMA Local Address */
-#define MBCS_WR_DMA_CTRL	0x0210	/* Write DMA Control */
-#define MBCS_WR_DMA_AMO_DEST	0x0218	/* Write DMA AMO Destination */
-#define MBCS_WR_DMA_INT_DEST	0x0220	/* Write DMA Interrupt Destination */
-#define MBCS_WR_DMA_AUX_STAT	0x0230	/* Write DMA Auxiliary Status */
-#define MBCS_ALG_AMO_DEST	0x0300	/* Algorithm AMO Destination */
-#define MBCS_ALG_INT_DEST	0x0308	/* Algorithm Interrupt Destination */
-#define MBCS_ALG_OFFSETS	0x0310
-#define MBCS_ALG_STEP		0x0318	/* Algorithm Step */
-
-#define MBCS_GSCR_START		0x0000000
-#define MBCS_DEBUG_START	0x0100000
-#define MBCS_RAM0_START		0x0200000
-#define MBCS_RAM1_START		0x0400000
-#define MBCS_RAM2_START		0x0600000
-
-#define MBCS_CM_CONTROL_REQ_TOUT_MASK 0x0000000000ffffffUL
-//#define PIO_BASE_ADDR_BASE_OFFSET_MASK 0x00fffffffff00000UL
-
-#define MBCS_SRAM_SIZE		(1024*1024)
-#define MBCS_CACHELINE_SIZE	128
-
-/*
- * MMR get's and put's
- */
-#define MBCS_MMR_ADDR(mmr_base, offset)((uint64_t *)(mmr_base + offset))
-#define MBCS_MMR_SET(mmr_base, offset, value) {			\
-	uint64_t *mbcs_mmr_set_u64p, readback;				\
-	mbcs_mmr_set_u64p = (uint64_t *)(mmr_base + offset);	\
-	*mbcs_mmr_set_u64p = value;					\
-	readback = *mbcs_mmr_set_u64p; \
-}
-#define MBCS_MMR_GET(mmr_base, offset) *(uint64_t *)(mmr_base + offset)
-#define MBCS_MMR_ZERO(mmr_base, offset) MBCS_MMR_SET(mmr_base, offset, 0)
-
-/*
- * MBCS mmr structures
- */
-union cm_id {
-	uint64_t cm_id_reg;
-	struct {
-		uint64_t always_one:1,	// 0
-		 mfg_id:11,	// 11:1
-		 part_num:16,	// 27:12
-		 bitstream_rev:8,	// 35:28
-		:28;		// 63:36
-	};
-};
-
-union cm_status {
-	uint64_t cm_status_reg;
-	struct {
-		uint64_t pending_reads:8,	// 7:0
-		 pending_writes:8,	// 15:8
-		 ice_rsp_credits:8,	// 23:16
-		 ice_req_credits:8,	// 31:24
-		 cm_req_credits:8,	// 39:32
-		:1,		// 40
-		 rd_dma_in_progress:1,	// 41
-		 rd_dma_done:1,	// 42
-		:1,		// 43
-		 wr_dma_in_progress:1,	// 44
-		 wr_dma_done:1,	// 45
-		 alg_waiting:1,	// 46
-		 alg_pipe_running:1,	// 47
-		 alg_done:1,	// 48
-		:3,		// 51:49
-		 pending_int_reqs:8,	// 59:52
-		:3,		// 62:60
-		 alg_half_speed_sel:1;	// 63
-	};
-};
-
-union cm_error_detail1 {
-	uint64_t cm_error_detail1_reg;
-	struct {
-		uint64_t packet_type:4,	// 3:0
-		 source_id:2,	// 5:4
-		 data_size:2,	// 7:6
-		 tnum:8,	// 15:8
-		 byte_enable:8,	// 23:16
-		 gfx_cred:8,	// 31:24
-		 read_type:2,	// 33:32
-		 pio_or_memory:1,	// 34
-		 head_cw_error:1,	// 35
-		:12,		// 47:36
-		 head_error_bit:1,	// 48
-		 data_error_bit:1,	// 49
-		:13,		// 62:50
-		 valid:1;	// 63
-	};
-};
-
-union cm_error_detail2 {
-	uint64_t cm_error_detail2_reg;
-	struct {
-		uint64_t address:56,	// 55:0
-		:8;		// 63:56
-	};
-};
-
-union cm_control {
-	uint64_t cm_control_reg;
-	struct {
-		uint64_t cm_id:2,	// 1:0
-		:2,		// 3:2
-		 max_trans:5,	// 8:4
-		:3,		// 11:9
-		 address_mode:1,	// 12
-		:7,		// 19:13
-		 credit_limit:8,	// 27:20
-		:5,		// 32:28
-		 rearm_stat_regs:1,	// 33
-		 prescalar_byp:1,	// 34
-		 force_gap_war:1,	// 35
-		 rd_dma_go:1,	// 36
-		 wr_dma_go:1,	// 37
-		 alg_go:1,	// 38
-		 rd_dma_clr:1,	// 39
-		 wr_dma_clr:1,	// 40
-		 alg_clr:1,	// 41
-		:2,		// 43:42
-		 alg_wait_step:1,	// 44
-		 alg_done_amo_en:1,	// 45
-		 alg_done_int_en:1,	// 46
-		:1,		// 47
-		 alg_sram0_locked:1,	// 48
-		 alg_sram1_locked:1,	// 49
-		 alg_sram2_locked:1,	// 50
-		 alg_done_clr:1,	// 51
-		:12;		// 63:52
-	};
-};
-
-union cm_req_timeout {
-	uint64_t cm_req_timeout_reg;
-	struct {
-		uint64_t time_out:24,	// 23:0
-		:40;		// 63:24
-	};
-};
-
-union intr_dest {
-	uint64_t intr_dest_reg;
-	struct {
-		uint64_t address:56,	// 55:0
-		 int_vector:8;	// 63:56
-	};
-};
-
-union cm_error_status {
-	uint64_t cm_error_status_reg;
-	struct {
-		uint64_t ecc_sbe:1,	// 0
-		 ecc_mbe:1,	// 1
-		 unsupported_req:1,	// 2
-		 unexpected_rsp:1,	// 3
-		 bad_length:1,	// 4
-		 bad_datavalid:1,	// 5
-		 buffer_overflow:1,	// 6
-		 request_timeout:1,	// 7
-		:8,		// 15:8
-		 head_inv_data_size:1,	// 16
-		 rsp_pactype_inv:1,	// 17
-		 head_sb_err:1,	// 18
-		 missing_head:1,	// 19
-		 head_inv_rd_type:1,	// 20
-		 head_cmd_err_bit:1,	// 21
-		 req_addr_align_inv:1,	// 22
-		 pio_req_addr_inv:1,	// 23
-		 req_range_dsize_inv:1,	// 24
-		 early_term:1,	// 25
-		 early_tail:1,	// 26
-		 missing_tail:1,	// 27
-		 data_flit_sb_err:1,	// 28
-		 cm2hcm_req_cred_of:1,	// 29
-		 cm2hcm_rsp_cred_of:1,	// 30
-		 rx_bad_didn:1,	// 31
-		 rd_dma_err_rsp:1,	// 32
-		 rd_dma_tnum_tout:1,	// 33
-		 rd_dma_multi_tnum_tou:1,	// 34
-		 wr_dma_err_rsp:1,	// 35
-		 wr_dma_tnum_tout:1,	// 36
-		 wr_dma_multi_tnum_tou:1,	// 37
-		 alg_data_overflow:1,	// 38
-		 alg_data_underflow:1,	// 39
-		 ram0_access_conflict:1,	// 40
-		 ram1_access_conflict:1,	// 41
-		 ram2_access_conflict:1,	// 42
-		 ram0_perr:1,	// 43
-		 ram1_perr:1,	// 44
-		 ram2_perr:1,	// 45
-		 int_gen_rsp_err:1,	// 46
-		 int_gen_tnum_tout:1,	// 47
-		 rd_dma_prog_err:1,	// 48
-		 wr_dma_prog_err:1,	// 49
-		:14;		// 63:50
-	};
-};
-
-union cm_clr_error_status {
-	uint64_t cm_clr_error_status_reg;
-	struct {
-		uint64_t clr_ecc_sbe:1,	// 0
-		 clr_ecc_mbe:1,	// 1
-		 clr_unsupported_req:1,	// 2
-		 clr_unexpected_rsp:1,	// 3
-		 clr_bad_length:1,	// 4
-		 clr_bad_datavalid:1,	// 5
-		 clr_buffer_overflow:1,	// 6
-		 clr_request_timeout:1,	// 7
-		:8,		// 15:8
-		 clr_head_inv_data_siz:1,	// 16
-		 clr_rsp_pactype_inv:1,	// 17
-		 clr_head_sb_err:1,	// 18
-		 clr_missing_head:1,	// 19
-		 clr_head_inv_rd_type:1,	// 20
-		 clr_head_cmd_err_bit:1,	// 21
-		 clr_req_addr_align_in:1,	// 22
-		 clr_pio_req_addr_inv:1,	// 23
-		 clr_req_range_dsize_i:1,	// 24
-		 clr_early_term:1,	// 25
-		 clr_early_tail:1,	// 26
-		 clr_missing_tail:1,	// 27
-		 clr_data_flit_sb_err:1,	// 28
-		 clr_cm2hcm_req_cred_o:1,	// 29
-		 clr_cm2hcm_rsp_cred_o:1,	// 30
-		 clr_rx_bad_didn:1,	// 31
-		 clr_rd_dma_err_rsp:1,	// 32
-		 clr_rd_dma_tnum_tout:1,	// 33
-		 clr_rd_dma_multi_tnum:1,	// 34
-		 clr_wr_dma_err_rsp:1,	// 35
-		 clr_wr_dma_tnum_tout:1,	// 36
-		 clr_wr_dma_multi_tnum:1,	// 37
-		 clr_alg_data_overflow:1,	// 38
-		 clr_alg_data_underflo:1,	// 39
-		 clr_ram0_access_confl:1,	// 40
-		 clr_ram1_access_confl:1,	// 41
-		 clr_ram2_access_confl:1,	// 42
-		 clr_ram0_perr:1,	// 43
-		 clr_ram1_perr:1,	// 44
-		 clr_ram2_perr:1,	// 45
-		 clr_int_gen_rsp_err:1,	// 46
-		 clr_int_gen_tnum_tout:1,	// 47
-		 clr_rd_dma_prog_err:1,	// 48
-		 clr_wr_dma_prog_err:1,	// 49
-		:14;		// 63:50
-	};
-};
-
-union cm_error_intr_enable {
-	uint64_t cm_error_intr_enable_reg;
-	struct {
-		uint64_t int_en_ecc_sbe:1,	// 0
-		 int_en_ecc_mbe:1,	// 1
-		 int_en_unsupported_re:1,	// 2
-		 int_en_unexpected_rsp:1,	// 3
-		 int_en_bad_length:1,	// 4
-		 int_en_bad_datavalid:1,	// 5
-		 int_en_buffer_overflo:1,	// 6
-		 int_en_request_timeou:1,	// 7
-		:8,		// 15:8
-		 int_en_head_inv_data_:1,	// 16
-		 int_en_rsp_pactype_in:1,	// 17
-		 int_en_head_sb_err:1,	// 18
-		 int_en_missing_head:1,	// 19
-		 int_en_head_inv_rd_ty:1,	// 20
-		 int_en_head_cmd_err_b:1,	// 21
-		 int_en_req_addr_align:1,	// 22
-		 int_en_pio_req_addr_i:1,	// 23
-		 int_en_req_range_dsiz:1,	// 24
-		 int_en_early_term:1,	// 25
-		 int_en_early_tail:1,	// 26
-		 int_en_missing_tail:1,	// 27
-		 int_en_data_flit_sb_e:1,	// 28
-		 int_en_cm2hcm_req_cre:1,	// 29
-		 int_en_cm2hcm_rsp_cre:1,	// 30
-		 int_en_rx_bad_didn:1,	// 31
-		 int_en_rd_dma_err_rsp:1,	// 32
-		 int_en_rd_dma_tnum_to:1,	// 33
-		 int_en_rd_dma_multi_t:1,	// 34
-		 int_en_wr_dma_err_rsp:1,	// 35
-		 int_en_wr_dma_tnum_to:1,	// 36
-		 int_en_wr_dma_multi_t:1,	// 37
-		 int_en_alg_data_overf:1,	// 38
-		 int_en_alg_data_under:1,	// 39
-		 int_en_ram0_access_co:1,	// 40
-		 int_en_ram1_access_co:1,	// 41
-		 int_en_ram2_access_co:1,	// 42
-		 int_en_ram0_perr:1,	// 43
-		 int_en_ram1_perr:1,	// 44
-		 int_en_ram2_perr:1,	// 45
-		 int_en_int_gen_rsp_er:1,	// 46
-		 int_en_int_gen_tnum_t:1,	// 47
-		 int_en_rd_dma_prog_er:1,	// 48
-		 int_en_wr_dma_prog_er:1,	// 49
-		:14;		// 63:50
-	};
-};
-
-struct cm_mmr {
-	union cm_id id;
-	union cm_status status;
-	union cm_error_detail1 err_detail1;
-	union cm_error_detail2 err_detail2;
-	union cm_control control;
-	union cm_req_timeout req_timeout;
-	uint64_t reserved1[1];
-	union intr_dest int_dest;
-	uint64_t reserved2[2];
-	uint64_t targ_flush;
-	uint64_t reserved3[1];
-	union cm_error_status err_status;
-	union cm_clr_error_status clr_err_status;
-	union cm_error_intr_enable int_enable;
-};
-
-union dma_hostaddr {
-	uint64_t dma_hostaddr_reg;
-	struct {
-		uint64_t dma_sys_addr:56,	// 55:0
-		:8;		// 63:56
-	};
-};
-
-union dma_localaddr {
-	uint64_t dma_localaddr_reg;
-	struct {
-		uint64_t dma_ram_addr:21,	// 20:0
-		 dma_ram_sel:2,	// 22:21
-		:41;		// 63:23
-	};
-};
-
-union dma_control {
-	uint64_t dma_control_reg;
-	struct {
-		uint64_t dma_op_length:16,	// 15:0
-		:18,		// 33:16
-		 done_amo_en:1,	// 34
-		 done_int_en:1,	// 35
-		:1,		// 36
-		 pio_mem_n:1,	// 37
-		:26;		// 63:38
-	};
-};
-
-union dma_amo_dest {
-	uint64_t dma_amo_dest_reg;
-	struct {
-		uint64_t dma_amo_sys_addr:56,	// 55:0
-		 dma_amo_mod_type:3,	// 58:56
-		:5;		// 63:59
-	};
-};
-
-union rdma_aux_status {
-	uint64_t rdma_aux_status_reg;
-	struct {
-		uint64_t op_num_pacs_left:17,	// 16:0
-		:5,		// 21:17
-		 lrsp_buff_empty:1,	// 22
-		:17,		// 39:23
-		 pending_reqs_left:6,	// 45:40
-		:18;		// 63:46
-	};
-};
-
-struct rdma_mmr {
-	union dma_hostaddr host_addr;
-	union dma_localaddr local_addr;
-	union dma_control control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union rdma_aux_status aux_status;
-};
-
-union wdma_aux_status {
-	uint64_t wdma_aux_status_reg;
-	struct {
-		uint64_t op_num_pacs_left:17,	// 16:0
-		:4,		// 20:17
-		 lreq_buff_empty:1,	// 21
-		:18,		// 39:22
-		 pending_reqs_left:6,	// 45:40
-		:18;		// 63:46
-	};
-};
-
-struct wdma_mmr {
-	union dma_hostaddr host_addr;
-	union dma_localaddr local_addr;
-	union dma_control control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union wdma_aux_status aux_status;
-};
-
-union algo_step {
-	uint64_t algo_step_reg;
-	struct {
-		uint64_t alg_step_cnt:16,	// 15:0
-		:48;		// 63:16
-	};
-};
-
-struct algo_mmr {
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union {
-		uint64_t algo_offset_reg;
-		struct {
-			uint64_t sram0_offset:7,	// 6:0
-			reserved0:1,	// 7
-			sram1_offset:7,	// 14:8
-			reserved1:1,	// 15
-			sram2_offset:7,	// 22:16
-			reserved2:14;	// 63:23
-		};
-	} sram_offset;
-	union algo_step step;
-};
-
-struct mbcs_mmr {
-	struct cm_mmr cm;
-	uint64_t reserved1[17];
-	struct rdma_mmr rdDma;
-	uint64_t reserved2[25];
-	struct wdma_mmr wrDma;
-	uint64_t reserved3[25];
-	struct algo_mmr algo;
-	uint64_t reserved4[156];
-};
-
-/*
- * defines
- */
-#define DEVICE_NAME "mbcs"
-#define MBCS_PART_NUM 0xfff0
-#define MBCS_PART_NUM_ALG0 0xf001
-#define MBCS_MFG_NUM  0x1
-
-struct algoblock {
-	uint64_t amoHostDest;
-	uint64_t amoModType;
-	uint64_t intrHostDest;
-	uint64_t intrVector;
-	uint64_t algoStepCount;
-};
-
-struct getdma {
-	uint64_t hostAddr;
-	uint64_t localAddr;
-	uint64_t bytes;
-	uint64_t DoneAmoEnable;
-	uint64_t DoneIntEnable;
-	uint64_t peerIO;
-	uint64_t amoHostDest;
-	uint64_t amoModType;
-	uint64_t intrHostDest;
-	uint64_t intrVector;
-};
-
-struct putdma {
-	uint64_t hostAddr;
-	uint64_t localAddr;
-	uint64_t bytes;
-	uint64_t DoneAmoEnable;
-	uint64_t DoneIntEnable;
-	uint64_t peerIO;
-	uint64_t amoHostDest;
-	uint64_t amoModType;
-	uint64_t intrHostDest;
-	uint64_t intrVector;
-};
-
-struct mbcs_soft {
-	struct list_head list;
-	struct cx_dev *cxdev;
-	int major;
-	int nasid;
-	void *mmr_base;
-	wait_queue_head_t dmawrite_queue;
-	wait_queue_head_t dmaread_queue;
-	wait_queue_head_t algo_queue;
-	struct sn_irq_info *get_sn_irq;
-	struct sn_irq_info *put_sn_irq;
-	struct sn_irq_info *algo_sn_irq;
-	struct getdma getdma;
-	struct putdma putdma;
-	struct algoblock algo;
-	uint64_t gscr_addr;	// pio addr
-	uint64_t ram0_addr;	// pio addr
-	uint64_t ram1_addr;	// pio addr
-	uint64_t ram2_addr;	// pio addr
-	uint64_t debug_addr;	// pio addr
-	atomic_t dmawrite_done;
-	atomic_t dmaread_done;
-	atomic_t algo_done;
-	struct mutex dmawritelock;
-	struct mutex dmareadlock;
-	struct mutex algolock;
-};
-
-static int mbcs_open(struct inode *ip, struct file *fp);
-static ssize_t mbcs_sram_read(struct file *fp, char __user *buf, size_t len,
-			      loff_t * off);
-static ssize_t mbcs_sram_write(struct file *fp, const char __user *buf, size_t len,
-			       loff_t * off);
-static loff_t mbcs_sram_llseek(struct file *filp, loff_t off, int whence);
-static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma);
-
-#endif				// __MBCS_H__
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 03/28] char/agp: remove the sgi-agp driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 01/28] char: remove the SGI snsc driver Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 02/28] char: remove the SGI tiocx/mbcs driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 04/28] ide: remove the sgiioc4 driver Christoph Hellwig
                   ` (23 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/configs/generic_defconfig   |   1 -
 arch/ia64/configs/gensparse_defconfig |   1 -
 drivers/char/agp/Kconfig              |   7 -
 drivers/char/agp/Makefile             |   1 -
 drivers/char/agp/sgi-agp.c            | 338 --------------------------
 5 files changed, 348 deletions(-)
 delete mode 100644 drivers/char/agp/sgi-agp.c

diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 1fc4d5a77e0d..79b88384c885 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -104,7 +104,6 @@ CONFIG_HPET=y
 CONFIG_AGP=m
 CONFIG_AGP_I460=m
 CONFIG_AGP_HP_ZX1=m
-CONFIG_AGP_SGI_TIOCA=m
 CONFIG_DRM=m
 CONFIG_DRM_TDFX=m
 CONFIG_DRM_R128=m
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 289ed714ad8b..f1490580ed69 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -94,7 +94,6 @@ CONFIG_HPET=y
 CONFIG_AGP=m
 CONFIG_AGP_I460=m
 CONFIG_AGP_HP_ZX1=m
-CONFIG_AGP_SGI_TIOCA=m
 CONFIG_DRM=m
 CONFIG_DRM_TDFX=m
 CONFIG_DRM_R128=m
diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index 6231714ef3c8..be50d7a93f4c 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -150,13 +150,6 @@ config AGP_EFFICEON
 	  This option gives you AGP support for the Transmeta Efficeon
 	  series processors with integrated northbridges.
 
-config AGP_SGI_TIOCA
-        tristate "SGI TIO chipset AGP support"
-        depends on AGP && (IA64_SGI_SN2 || IA64_GENERIC)
-        help
-          This option gives you AGP GART support for the SGI TIO chipset
-          for IA64 processors.
-
 config INTEL_GTT
 	tristate
 	depends on X86 && PCI
diff --git a/drivers/char/agp/Makefile b/drivers/char/agp/Makefile
index 4a786ffd9dee..cb2497d157f6 100644
--- a/drivers/char/agp/Makefile
+++ b/drivers/char/agp/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_AGP_I460)		+= i460-agp.o
 obj-$(CONFIG_AGP_INTEL)		+= intel-agp.o
 obj-$(CONFIG_INTEL_GTT)		+= intel-gtt.o
 obj-$(CONFIG_AGP_NVIDIA)	+= nvidia-agp.o
-obj-$(CONFIG_AGP_SGI_TIOCA)	+= sgi-agp.o
 obj-$(CONFIG_AGP_SIS)		+= sis-agp.o
 obj-$(CONFIG_AGP_SWORKS)	+= sworks-agp.o
 obj-$(CONFIG_AGP_UNINORTH)	+= uninorth-agp.o
diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c
deleted file mode 100644
index e7d5bdc02d93..000000000000
--- a/drivers/char/agp/sgi-agp.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2003-2005 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-/*
- * SGI TIOCA AGPGART routines.
- *
- */
-
-#include <linux/acpi.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/agp_backend.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/io.h>
-#include <asm/sn/pcidev.h>
-#include <asm/sn/pcibus_provider_defs.h>
-#include <asm/sn/tioca_provider.h>
-#include "agp.h"
-
-extern int agp_memory_reserved;
-extern uint32_t tioca_gart_found;
-extern struct list_head tioca_list;
-static struct agp_bridge_data **sgi_tioca_agp_bridges;
-
-/*
- * The aperature size and related information is set up at TIOCA init time.
- * Values for this table will be extracted and filled in at
- * sgi_tioca_fetch_size() time.
- */
-
-static struct aper_size_info_fixed sgi_tioca_sizes[] = {
-	{0, 0, 0},
-};
-
-static struct page *sgi_tioca_alloc_page(struct agp_bridge_data *bridge)
-{
-	struct page *page;
-	int nid;
-	struct tioca_kernel *info =
-	    (struct tioca_kernel *)bridge->dev_private_data;
-
-	nid = info->ca_closest_node;
-	page = alloc_pages_node(nid, GFP_KERNEL, 0);
-	if (!page)
-		return NULL;
-
-	get_page(page);
-	atomic_inc(&agp_bridge->current_memory_agp);
-	return page;
-}
-
-/*
- * Flush GART tlb's.  Cannot selectively flush based on memory so the mem
- * arg is ignored.
- */
-
-static void sgi_tioca_tlbflush(struct agp_memory *mem)
-{
-	tioca_tlbflush(mem->bridge->dev_private_data);
-}
-
-/*
- * Given an address of a host physical page, turn it into a valid gart
- * entry.
- */
-static unsigned long
-sgi_tioca_mask_memory(struct agp_bridge_data *bridge, dma_addr_t addr,
-		      int type)
-{
-	return tioca_physpage_to_gart(addr);
-}
-
-static void sgi_tioca_agp_enable(struct agp_bridge_data *bridge, u32 mode)
-{
-	tioca_fastwrite_enable(bridge->dev_private_data);
-}
-
-/*
- * sgi_tioca_configure() doesn't have anything to do since the base CA driver
- * has alreay set up the GART.
- */
-
-static int sgi_tioca_configure(void)
-{
-	return 0;
-}
-
-/*
- * Determine gfx aperature size.  This has already been determined by the
- * CA driver init, so just need to set agp_bridge values accordingly.
- */
-
-static int sgi_tioca_fetch_size(void)
-{
-	struct tioca_kernel *info =
-	    (struct tioca_kernel *)agp_bridge->dev_private_data;
-
-	sgi_tioca_sizes[0].size = info->ca_gfxap_size / MB(1);
-	sgi_tioca_sizes[0].num_entries = info->ca_gfxgart_entries;
-
-	return sgi_tioca_sizes[0].size;
-}
-
-static int sgi_tioca_create_gatt_table(struct agp_bridge_data *bridge)
-{
-	struct tioca_kernel *info =
-	    (struct tioca_kernel *)bridge->dev_private_data;
-
-	bridge->gatt_table_real = (u32 *) info->ca_gfxgart;
-	bridge->gatt_table = bridge->gatt_table_real;
-	bridge->gatt_bus_addr = info->ca_gfxgart_base;
-
-	return 0;
-}
-
-static int sgi_tioca_free_gatt_table(struct agp_bridge_data *bridge)
-{
-	return 0;
-}
-
-static int sgi_tioca_insert_memory(struct agp_memory *mem, off_t pg_start,
-				   int type)
-{
-	int num_entries;
-	size_t i;
-	off_t j;
-	void *temp;
-	struct agp_bridge_data *bridge;
-	u64 *table;
-
-	bridge = mem->bridge;
-	if (!bridge)
-		return -EINVAL;
-
-	table = (u64 *)bridge->gatt_table;
-
-	temp = bridge->current_size;
-
-	switch (bridge->driver->size_type) {
-	case U8_APER_SIZE:
-		num_entries = A_SIZE_8(temp)->num_entries;
-		break;
-	case U16_APER_SIZE:
-		num_entries = A_SIZE_16(temp)->num_entries;
-		break;
-	case U32_APER_SIZE:
-		num_entries = A_SIZE_32(temp)->num_entries;
-		break;
-	case FIXED_APER_SIZE:
-		num_entries = A_SIZE_FIX(temp)->num_entries;
-		break;
-	case LVL2_APER_SIZE:
-		return -EINVAL;
-	default:
-		num_entries = 0;
-		break;
-	}
-
-	num_entries -= agp_memory_reserved / PAGE_SIZE;
-	if (num_entries < 0)
-		num_entries = 0;
-
-	if (type != 0 || mem->type != 0) {
-		return -EINVAL;
-	}
-
-	if ((pg_start + mem->page_count) > num_entries)
-		return -EINVAL;
-
-	j = pg_start;
-
-	while (j < (pg_start + mem->page_count)) {
-		if (table[j])
-			return -EBUSY;
-		j++;
-	}
-
-	if (!mem->is_flushed) {
-		bridge->driver->cache_flush();
-		mem->is_flushed = true;
-	}
-
-	for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
-		table[j] =
-		    bridge->driver->mask_memory(bridge,
-						page_to_phys(mem->pages[i]),
-						mem->type);
-	}
-
-	bridge->driver->tlb_flush(mem);
-	return 0;
-}
-
-static int sgi_tioca_remove_memory(struct agp_memory *mem, off_t pg_start,
-				   int type)
-{
-	size_t i;
-	struct agp_bridge_data *bridge;
-	u64 *table;
-
-	bridge = mem->bridge;
-	if (!bridge)
-		return -EINVAL;
-
-	if (type != 0 || mem->type != 0) {
-		return -EINVAL;
-	}
-
-	table = (u64 *)bridge->gatt_table;
-
-	for (i = pg_start; i < (mem->page_count + pg_start); i++) {
-		table[i] = 0;
-	}
-
-	bridge->driver->tlb_flush(mem);
-	return 0;
-}
-
-static void sgi_tioca_cache_flush(void)
-{
-}
-
-/*
- * Cleanup.  Nothing to do as the CA driver owns the GART.
- */
-
-static void sgi_tioca_cleanup(void)
-{
-}
-
-static struct agp_bridge_data *sgi_tioca_find_bridge(struct pci_dev *pdev)
-{
-	struct agp_bridge_data *bridge;
-
-	list_for_each_entry(bridge, &agp_bridges, list) {
-		if (bridge->dev->bus == pdev->bus)
-			break;
-	}
-	return bridge;
-}
-
-const struct agp_bridge_driver sgi_tioca_driver = {
-	.owner = THIS_MODULE,
-	.size_type = U16_APER_SIZE,
-	.configure = sgi_tioca_configure,
-	.fetch_size = sgi_tioca_fetch_size,
-	.cleanup = sgi_tioca_cleanup,
-	.tlb_flush = sgi_tioca_tlbflush,
-	.mask_memory = sgi_tioca_mask_memory,
-	.agp_enable = sgi_tioca_agp_enable,
-	.cache_flush = sgi_tioca_cache_flush,
-	.create_gatt_table = sgi_tioca_create_gatt_table,
-	.free_gatt_table = sgi_tioca_free_gatt_table,
-	.insert_memory = sgi_tioca_insert_memory,
-	.remove_memory = sgi_tioca_remove_memory,
-	.alloc_by_type = agp_generic_alloc_by_type,
-	.free_by_type = agp_generic_free_by_type,
-	.agp_alloc_page = sgi_tioca_alloc_page,
-	.agp_destroy_page = agp_generic_destroy_page,
-	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
-	.cant_use_aperture = true,
-	.needs_scratch_page = false,
-	.num_aperture_sizes = 1,
-};
-
-static int agp_sgi_init(void)
-{
-	unsigned int j;
-	struct tioca_kernel *info;
-	struct pci_dev *pdev = NULL;
-
-	if (tioca_gart_found)
-		printk(KERN_INFO PFX "SGI TIO CA GART driver initialized.\n");
-	else
-		return 0;
-
-	sgi_tioca_agp_bridges = kmalloc_array(tioca_gart_found,
-					      sizeof(struct agp_bridge_data *),
-					      GFP_KERNEL);
-	if (!sgi_tioca_agp_bridges)
-		return -ENOMEM;
-
-	j = 0;
-	list_for_each_entry(info, &tioca_list, ca_list) {
-		if (list_empty(info->ca_devices))
-			continue;
-		list_for_each_entry(pdev, info->ca_devices, bus_list) {
-			u8 cap_ptr;
-
-			if (pdev->class != (PCI_CLASS_DISPLAY_VGA << 8))
-				continue;
-			cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
-			if (!cap_ptr)
-				continue;
-		}
-		sgi_tioca_agp_bridges[j] = agp_alloc_bridge();
-		printk(KERN_INFO PFX "bridge %d = 0x%p\n", j,
-		       sgi_tioca_agp_bridges[j]);
-		if (sgi_tioca_agp_bridges[j]) {
-			sgi_tioca_agp_bridges[j]->dev = pdev;
-			sgi_tioca_agp_bridges[j]->dev_private_data = info;
-			sgi_tioca_agp_bridges[j]->driver = &sgi_tioca_driver;
-			sgi_tioca_agp_bridges[j]->gart_bus_addr =
-			    info->ca_gfxap_base;
-			sgi_tioca_agp_bridges[j]->mode = (0x7D << 24) |	/* 126 requests */
-			    (0x1 << 9) |	/* SBA supported */
-			    (0x1 << 5) |	/* 64-bit addresses supported */
-			    (0x1 << 4) |	/* FW supported */
-			    (0x1 << 3) |	/* AGP 3.0 mode */
-			    0x2;	/* 8x transfer only */
-			sgi_tioca_agp_bridges[j]->current_size =
-			    sgi_tioca_agp_bridges[j]->previous_size =
-			    (void *)&sgi_tioca_sizes[0];
-			agp_add_bridge(sgi_tioca_agp_bridges[j]);
-		}
-		j++;
-	}
-
-	agp_find_bridge = &sgi_tioca_find_bridge;
-	return 0;
-}
-
-static void agp_sgi_cleanup(void)
-{
-	kfree(sgi_tioca_agp_bridges);
-	sgi_tioca_agp_bridges = NULL;
-}
-
-module_init(agp_sgi_init);
-module_exit(agp_sgi_cleanup);
-
-MODULE_LICENSE("GPL and additional rights");
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 04/28] ide: remove the sgiioc4 driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (2 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 03/28] char/agp: remove the sgi-agp driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 05/28] PCI/hotplug: remove the sgi_hotplug driver Christoph Hellwig
                   ` (22 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/configs/generic_defconfig   |   1 -
 arch/ia64/configs/gensparse_defconfig |   1 -
 drivers/Kconfig                       |   2 -
 drivers/ide/Kconfig                   |   9 -
 drivers/ide/Makefile                  |   1 -
 drivers/ide/sgiioc4.c                 | 630 --------------------------
 6 files changed, 644 deletions(-)
 delete mode 100644 drivers/ide/sgiioc4.c

diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 79b88384c885..a41afb3ef209 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -51,7 +51,6 @@ CONFIG_BLK_DEV_IDECD=y
 CONFIG_BLK_DEV_GENERIC=y
 CONFIG_BLK_DEV_CMD64X=y
 CONFIG_BLK_DEV_PIIX=y
-CONFIG_BLK_DEV_SGIIOC4=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_CHR_DEV_ST=m
 CONFIG_BLK_DEV_SR=m
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index f1490580ed69..07484aa6f16f 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -44,7 +44,6 @@ CONFIG_IDE_GENERIC=y
 CONFIG_BLK_DEV_GENERIC=y
 CONFIG_BLK_DEV_CMD64X=y
 CONFIG_BLK_DEV_PIIX=y
-CONFIG_BLK_DEV_SGIIOC4=y
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_CHR_DEV_ST=m
diff --git a/drivers/Kconfig b/drivers/Kconfig
index 61cf4ea2c229..477d63d0364d 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -30,8 +30,6 @@ source "drivers/block/Kconfig"
 
 source "drivers/nvme/Kconfig"
 
-# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
-
 source "drivers/misc/Kconfig"
 
 source "drivers/ide/Kconfig"
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 9eada392df15..1c227ea8ecd3 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -567,15 +567,6 @@ config BLK_DEV_SVWKS
 	  This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5
 	  chipsets.
 
-config BLK_DEV_SGIIOC4
-	tristate "Silicon Graphics IOC4 chipset ATA/ATAPI support"
-	depends on (IA64_SGI_SN2 || IA64_GENERIC) && SGI_IOC4
-	select BLK_DEV_IDEDMA_PCI
-	help
-	  This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
-	  chipset, which has one channel and can support two devices.
-	  Please say Y here if you have an Altix System from SGI.
-
 config BLK_DEV_SIIMAGE
 	tristate "Silicon Image chipset support"
 	select BLK_DEV_IDEDMA_PCI
diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index 9f617a77970f..cac02db4098d 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -59,7 +59,6 @@ obj-$(CONFIG_BLK_DEV_PDC202XX_NEW)	+= pdc202xx_new.o
 obj-$(CONFIG_BLK_DEV_PIIX)		+= piix.o
 obj-$(CONFIG_BLK_DEV_RZ1000)		+= rz1000.o
 obj-$(CONFIG_BLK_DEV_SVWKS)		+= serverworks.o
-obj-$(CONFIG_BLK_DEV_SGIIOC4)		+= sgiioc4.o
 obj-$(CONFIG_BLK_DEV_SIIMAGE)		+= siimage.o
 obj-$(CONFIG_BLK_DEV_SIS5513)		+= sis5513.o
 obj-$(CONFIG_BLK_DEV_SL82C105)		+= sl82c105.o
diff --git a/drivers/ide/sgiioc4.c b/drivers/ide/sgiioc4.c
deleted file mode 100644
index 2d35e9f7516f..000000000000
--- a/drivers/ide/sgiioc4.c
+++ /dev/null
@@ -1,630 +0,0 @@
-/*
- * Copyright (c) 2003-2006 Silicon Graphics, Inc.  All Rights Reserved.
- * Copyright (C) 2008-2009 MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/NoticeExplan
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/blkdev.h>
-#include <linux/scatterlist.h>
-#include <linux/ioc4.h>
-#include <linux/io.h>
-#include <linux/ide.h>
-
-#define DRV_NAME "SGIIOC4"
-
-/* IOC4 Specific Definitions */
-#define IOC4_CMD_OFFSET		0x100
-#define IOC4_CTRL_OFFSET	0x120
-#define IOC4_DMA_OFFSET		0x140
-#define IOC4_INTR_OFFSET	0x0
-
-#define IOC4_TIMING		0x00
-#define IOC4_DMA_PTR_L		0x01
-#define IOC4_DMA_PTR_H		0x02
-#define IOC4_DMA_ADDR_L		0x03
-#define IOC4_DMA_ADDR_H		0x04
-#define IOC4_BC_DEV		0x05
-#define IOC4_BC_MEM		0x06
-#define	IOC4_DMA_CTRL		0x07
-#define	IOC4_DMA_END_ADDR	0x08
-
-/* Bits in the IOC4 Control/Status Register */
-#define	IOC4_S_DMA_START	0x01
-#define	IOC4_S_DMA_STOP		0x02
-#define	IOC4_S_DMA_DIR		0x04
-#define	IOC4_S_DMA_ACTIVE	0x08
-#define	IOC4_S_DMA_ERROR	0x10
-#define	IOC4_ATA_MEMERR		0x02
-
-/* Read/Write Directions */
-#define	IOC4_DMA_WRITE		0x04
-#define	IOC4_DMA_READ		0x00
-
-/* Interrupt Register Offsets */
-#define IOC4_INTR_REG		0x03
-#define	IOC4_INTR_SET		0x05
-#define	IOC4_INTR_CLEAR		0x07
-
-#define IOC4_IDE_CACHELINE_SIZE	128
-#define IOC4_CMD_CTL_BLK_SIZE	0x20
-#define IOC4_SUPPORTED_FIRMWARE_REV 46
-
-struct ioc4_dma_regs {
-	u32 timing_reg0;
-	u32 timing_reg1;
-	u32 low_mem_ptr;
-	u32 high_mem_ptr;
-	u32 low_mem_addr;
-	u32 high_mem_addr;
-	u32 dev_byte_count;
-	u32 mem_byte_count;
-	u32 status;
-};
-
-/* Each Physical Region Descriptor Entry size is 16 bytes (2 * 64 bits) */
-/* IOC4 has only 1 IDE channel */
-#define IOC4_PRD_BYTES		16
-#define IOC4_PRD_ENTRIES	(PAGE_SIZE / (4 * IOC4_PRD_BYTES))
-
-
-static void sgiioc4_init_hwif_ports(struct ide_hw *hw,
-				    unsigned long data_port,
-				    unsigned long ctrl_port,
-				    unsigned long irq_port)
-{
-	unsigned long reg = data_port;
-	int i;
-
-	/* Registers are word (32 bit) aligned */
-	for (i = 0; i <= 7; i++)
-		hw->io_ports_array[i] = reg + i * 4;
-
-	hw->io_ports.ctl_addr = ctrl_port;
-	hw->io_ports.irq_addr = irq_port;
-}
-
-static int sgiioc4_checkirq(ide_hwif_t *hwif)
-{
-	unsigned long intr_addr = hwif->io_ports.irq_addr + IOC4_INTR_REG * 4;
-
-	if (readl((void __iomem *)intr_addr) & 0x03)
-		return 1;
-
-	return 0;
-}
-
-static u8 sgiioc4_read_status(ide_hwif_t *);
-
-static int sgiioc4_clearirq(ide_drive_t *drive)
-{
-	u32 intr_reg;
-	ide_hwif_t *hwif = drive->hwif;
-	struct ide_io_ports *io_ports = &hwif->io_ports;
-	unsigned long other_ir = io_ports->irq_addr + (IOC4_INTR_REG << 2);
-
-	/* Code to check for PCI error conditions */
-	intr_reg = readl((void __iomem *)other_ir);
-	if (intr_reg & 0x03) { /* Valid IOC4-IDE interrupt */
-		/*
-		 * Using sgiioc4_read_status to read the Status register has a
-		 * side effect of clearing the interrupt.  The first read should
-		 * clear it if it is set.  The second read should return
-		 * a "clear" status if it got cleared.  If not, then spin
-		 * for a bit trying to clear it.
-		 */
-		u8 stat = sgiioc4_read_status(hwif);
-		int count = 0;
-
-		stat = sgiioc4_read_status(hwif);
-		while ((stat & ATA_BUSY) && (count++ < 100)) {
-			udelay(1);
-			stat = sgiioc4_read_status(hwif);
-		}
-
-		if (intr_reg & 0x02) {
-			struct pci_dev *dev = to_pci_dev(hwif->dev);
-			/* Error when transferring DMA data on PCI bus */
-			u32 pci_err_addr_low, pci_err_addr_high,
-			    pci_stat_cmd_reg;
-
-			pci_err_addr_low =
-				readl((void __iomem *)io_ports->irq_addr);
-			pci_err_addr_high =
-				readl((void __iomem *)(io_ports->irq_addr + 4));
-			pci_read_config_dword(dev, PCI_COMMAND,
-					      &pci_stat_cmd_reg);
-			printk(KERN_ERR "%s(%s): PCI Bus Error when doing DMA: "
-			       "status-cmd reg is 0x%x\n",
-			       __func__, drive->name, pci_stat_cmd_reg);
-			printk(KERN_ERR "%s(%s): PCI Error Address is 0x%x%x\n",
-			       __func__, drive->name,
-			       pci_err_addr_high, pci_err_addr_low);
-			/* Clear the PCI Error indicator */
-			pci_write_config_dword(dev, PCI_COMMAND, 0x00000146);
-		}
-
-		/* Clear the Interrupt, Error bits on the IOC4 */
-		writel(0x03, (void __iomem *)other_ir);
-
-		intr_reg = readl((void __iomem *)other_ir);
-	}
-
-	return intr_reg & 3;
-}
-
-static void sgiioc4_dma_start(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	unsigned long ioc4_dma_addr = hwif->dma_base + IOC4_DMA_CTRL * 4;
-	unsigned int reg = readl((void __iomem *)ioc4_dma_addr);
-	unsigned int temp_reg = reg | IOC4_S_DMA_START;
-
-	writel(temp_reg, (void __iomem *)ioc4_dma_addr);
-}
-
-static u32 sgiioc4_ide_dma_stop(ide_hwif_t *hwif, u64 dma_base)
-{
-	unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4;
-	u32	ioc4_dma;
-	int	count;
-
-	count = 0;
-	ioc4_dma = readl((void __iomem *)ioc4_dma_addr);
-	while ((ioc4_dma & IOC4_S_DMA_STOP) && (count++ < 200)) {
-		udelay(1);
-		ioc4_dma = readl((void __iomem *)ioc4_dma_addr);
-	}
-	return ioc4_dma;
-}
-
-/* Stops the IOC4 DMA Engine */
-static int sgiioc4_dma_end(ide_drive_t *drive)
-{
-	u32 ioc4_dma, bc_dev, bc_mem, num, valid = 0, cnt = 0;
-	ide_hwif_t *hwif = drive->hwif;
-	unsigned long dma_base = hwif->dma_base;
-	int dma_stat = 0;
-	unsigned long *ending_dma = ide_get_hwifdata(hwif);
-
-	writel(IOC4_S_DMA_STOP, (void __iomem *)(dma_base + IOC4_DMA_CTRL * 4));
-
-	ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base);
-
-	if (ioc4_dma & IOC4_S_DMA_STOP) {
-		printk(KERN_ERR
-		       "%s(%s): IOC4 DMA STOP bit is still 1 :"
-		       "ioc4_dma_reg 0x%x\n",
-		       __func__, drive->name, ioc4_dma);
-		dma_stat = 1;
-	}
-
-	/*
-	 * The IOC4 will DMA 1's to the ending DMA area to indicate that
-	 * previous data DMA is complete.  This is necessary because of relaxed
-	 * ordering between register reads and DMA writes on the Altix.
-	 */
-	while ((cnt++ < 200) && (!valid)) {
-		for (num = 0; num < 16; num++) {
-			if (ending_dma[num]) {
-				valid = 1;
-				break;
-			}
-		}
-		udelay(1);
-	}
-	if (!valid) {
-		printk(KERN_ERR "%s(%s) : DMA incomplete\n", __func__,
-		       drive->name);
-		dma_stat = 1;
-	}
-
-	bc_dev = readl((void __iomem *)(dma_base + IOC4_BC_DEV * 4));
-	bc_mem = readl((void __iomem *)(dma_base + IOC4_BC_MEM * 4));
-
-	if ((bc_dev & 0x01FF) || (bc_mem & 0x1FF)) {
-		if (bc_dev > bc_mem + 8) {
-			printk(KERN_ERR
-			       "%s(%s): WARNING!! byte_count_dev %d "
-			       "!= byte_count_mem %d\n",
-			       __func__, drive->name, bc_dev, bc_mem);
-		}
-	}
-
-	return dma_stat;
-}
-
-static void sgiioc4_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
-}
-
-/* Returns 1 if DMA IRQ issued, 0 otherwise */
-static int sgiioc4_dma_test_irq(ide_drive_t *drive)
-{
-	return sgiioc4_checkirq(drive->hwif);
-}
-
-static void sgiioc4_dma_host_set(ide_drive_t *drive, int on)
-{
-	if (!on)
-		sgiioc4_clearirq(drive);
-}
-
-static void sgiioc4_resetproc(ide_drive_t *drive)
-{
-	struct ide_cmd *cmd = &drive->hwif->cmd;
-
-	sgiioc4_dma_end(drive);
-	ide_dma_unmap_sg(drive, cmd);
-	sgiioc4_clearirq(drive);
-}
-
-static void sgiioc4_dma_lost_irq(ide_drive_t *drive)
-{
-	sgiioc4_resetproc(drive);
-
-	ide_dma_lost_irq(drive);
-}
-
-static u8 sgiioc4_read_status(ide_hwif_t *hwif)
-{
-	unsigned long port = hwif->io_ports.status_addr;
-	u8 reg = (u8) readb((void __iomem *) port);
-
-	if (!(reg & ATA_BUSY)) {	/* Not busy... check for interrupt */
-		unsigned long other_ir = port - 0x110;
-		unsigned int intr_reg = (u32) readl((void __iomem *) other_ir);
-
-		/* Clear the Interrupt, Error bits on the IOC4 */
-		if (intr_reg & 0x03) {
-			writel(0x03, (void __iomem *) other_ir);
-			intr_reg = (u32) readl((void __iomem *) other_ir);
-		}
-	}
-
-	return reg;
-}
-
-/* Creates a DMA map for the scatter-gather list entries */
-static int ide_dma_sgiioc4(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-	unsigned long dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET;
-	int num_ports = sizeof(struct ioc4_dma_regs);
-	void *pad;
-
-	printk(KERN_INFO "    %s: MMIO-DMA\n", hwif->name);
-
-	if (request_mem_region(dma_base, num_ports, hwif->name) == NULL) {
-		printk(KERN_ERR "%s(%s) -- ERROR: addresses 0x%08lx to 0x%08lx "
-		       "already in use\n", __func__, hwif->name,
-		       dma_base, dma_base + num_ports - 1);
-		return -1;
-	}
-
-	hwif->dma_base = (unsigned long)hwif->io_ports.irq_addr +
-			 IOC4_DMA_OFFSET;
-
-	hwif->sg_max_nents = IOC4_PRD_ENTRIES;
-
-	hwif->prd_max_nents = IOC4_PRD_ENTRIES;
-	hwif->prd_ent_size = IOC4_PRD_BYTES;
-
-	if (ide_allocate_dma_engine(hwif))
-		goto dma_pci_alloc_failure;
-
-	pad = dma_alloc_coherent(&dev->dev, IOC4_IDE_CACHELINE_SIZE,
-				   (dma_addr_t *)&hwif->extra_base, GFP_KERNEL);
-	if (pad) {
-		ide_set_hwifdata(hwif, pad);
-		return 0;
-	}
-
-	ide_release_dma_engine(hwif);
-
-	printk(KERN_ERR "%s(%s) -- ERROR: Unable to allocate DMA maps\n",
-	       __func__, hwif->name);
-	printk(KERN_INFO "%s: changing from DMA to PIO mode", hwif->name);
-
-dma_pci_alloc_failure:
-	release_mem_region(dma_base, num_ports);
-
-	return -1;
-}
-
-/* Initializes the IOC4 DMA Engine */
-static void sgiioc4_configure_for_dma(int dma_direction, ide_drive_t *drive)
-{
-	u32 ioc4_dma;
-	ide_hwif_t *hwif = drive->hwif;
-	unsigned long dma_base = hwif->dma_base;
-	unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4;
-	u32 dma_addr, ending_dma_addr;
-
-	ioc4_dma = readl((void __iomem *)ioc4_dma_addr);
-
-	if (ioc4_dma & IOC4_S_DMA_ACTIVE) {
-		printk(KERN_WARNING "%s(%s): Warning!! DMA from previous "
-		       "transfer was still active\n", __func__, drive->name);
-		writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr);
-		ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base);
-
-		if (ioc4_dma & IOC4_S_DMA_STOP)
-			printk(KERN_ERR "%s(%s): IOC4 DMA STOP bit is "
-			       "still 1\n", __func__, drive->name);
-	}
-
-	ioc4_dma = readl((void __iomem *)ioc4_dma_addr);
-	if (ioc4_dma & IOC4_S_DMA_ERROR) {
-		printk(KERN_WARNING "%s(%s): Warning!! DMA Error during "
-		       "previous transfer, status 0x%x\n",
-		       __func__, drive->name, ioc4_dma);
-		writel(IOC4_S_DMA_STOP, (void __iomem *)ioc4_dma_addr);
-		ioc4_dma = sgiioc4_ide_dma_stop(hwif, dma_base);
-
-		if (ioc4_dma & IOC4_S_DMA_STOP)
-			printk(KERN_ERR "%s(%s): IOC4 DMA STOP bit is "
-			       "still 1\n", __func__, drive->name);
-	}
-
-	/* Address of the Scatter Gather List */
-	dma_addr = cpu_to_le32(hwif->dmatable_dma);
-	writel(dma_addr, (void __iomem *)(dma_base + IOC4_DMA_PTR_L * 4));
-
-	/* Address of the Ending DMA */
-	memset(ide_get_hwifdata(hwif), 0, IOC4_IDE_CACHELINE_SIZE);
-	ending_dma_addr = cpu_to_le32(hwif->extra_base);
-	writel(ending_dma_addr, (void __iomem *)(dma_base +
-						 IOC4_DMA_END_ADDR * 4));
-
-	writel(dma_direction, (void __iomem *)ioc4_dma_addr);
-}
-
-/* IOC4 Scatter Gather list Format					 */
-/* 128 Bit entries to support 64 bit addresses in the future		 */
-/* The Scatter Gather list Entry should be in the BIG-ENDIAN Format	 */
-/* --------------------------------------------------------------------- */
-/* | Upper 32 bits - Zero	    |		Lower 32 bits- address | */
-/* --------------------------------------------------------------------- */
-/* | Upper 32 bits - Zero	    |EOL| 15 unused     | 16 Bit Length| */
-/* --------------------------------------------------------------------- */
-/* Creates the scatter gather list, DMA Table				 */
-
-static int sgiioc4_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	unsigned int *table = hwif->dmatable_cpu;
-	unsigned int count = 0, i = cmd->sg_nents;
-	struct scatterlist *sg = hwif->sg_table;
-
-	while (i && sg_dma_len(sg)) {
-		dma_addr_t cur_addr;
-		int cur_len;
-		cur_addr = sg_dma_address(sg);
-		cur_len = sg_dma_len(sg);
-
-		while (cur_len) {
-			if (count++ >= IOC4_PRD_ENTRIES) {
-				printk(KERN_WARNING
-				       "%s: DMA table too small\n",
-				       drive->name);
-				return 0;
-			} else {
-				u32 bcount =
-				    0x10000 - (cur_addr & 0xffff);
-
-				if (bcount > cur_len)
-					bcount = cur_len;
-
-				/*
-				 * Put the address, length in
-				 * the IOC4 dma-table format
-				 */
-				*table = 0x0;
-				table++;
-				*table = cpu_to_be32(cur_addr);
-				table++;
-				*table = 0x0;
-				table++;
-
-				*table = cpu_to_be32(bcount);
-				table++;
-
-				cur_addr += bcount;
-				cur_len -= bcount;
-			}
-		}
-
-		sg = sg_next(sg);
-		i--;
-	}
-
-	if (count) {
-		table--;
-		*table |= cpu_to_be32(0x80000000);
-		return count;
-	}
-
-	return 0;		/* revert to PIO for this request */
-}
-
-static int sgiioc4_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
-{
-	int ddir;
-	u8 write = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
-
-	if (sgiioc4_build_dmatable(drive, cmd) == 0)
-		/* try PIO instead of DMA */
-		return 1;
-
-	if (write)
-		/* Writes TO the IOC4 FROM Main Memory */
-		ddir = IOC4_DMA_READ;
-	else
-		/* Writes FROM the IOC4 TO Main Memory */
-		ddir = IOC4_DMA_WRITE;
-
-	sgiioc4_configure_for_dma(ddir, drive);
-
-	return 0;
-}
-
-static const struct ide_tp_ops sgiioc4_tp_ops = {
-	.exec_command		= ide_exec_command,
-	.read_status		= sgiioc4_read_status,
-	.read_altstatus		= ide_read_altstatus,
-	.write_devctl		= ide_write_devctl,
-
-	.dev_select		= ide_dev_select,
-	.tf_load		= ide_tf_load,
-	.tf_read		= ide_tf_read,
-
-	.input_data		= ide_input_data,
-	.output_data		= ide_output_data,
-};
-
-static const struct ide_port_ops sgiioc4_port_ops = {
-	.set_dma_mode		= sgiioc4_set_dma_mode,
-	/* reset DMA engine, clear IRQs */
-	.resetproc		= sgiioc4_resetproc,
-};
-
-static const struct ide_dma_ops sgiioc4_dma_ops = {
-	.dma_host_set		= sgiioc4_dma_host_set,
-	.dma_setup		= sgiioc4_dma_setup,
-	.dma_start		= sgiioc4_dma_start,
-	.dma_end		= sgiioc4_dma_end,
-	.dma_test_irq		= sgiioc4_dma_test_irq,
-	.dma_lost_irq		= sgiioc4_dma_lost_irq,
-};
-
-static const struct ide_port_info sgiioc4_port_info = {
-	.name			= DRV_NAME,
-	.chipset		= ide_pci,
-	.init_dma		= ide_dma_sgiioc4,
-	.tp_ops			= &sgiioc4_tp_ops,
-	.port_ops		= &sgiioc4_port_ops,
-	.dma_ops		= &sgiioc4_dma_ops,
-	.host_flags		= IDE_HFLAG_MMIO,
-	.irq_flags		= IRQF_SHARED,
-	.mwdma_mask		= ATA_MWDMA2_ONLY,
-};
-
-static int sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
-{
-	unsigned long cmd_base, irqport;
-	unsigned long bar0, cmd_phys_base, ctl;
-	void __iomem *virt_base;
-	struct ide_hw hw, *hws[] = { &hw };
-	int rc;
-
-	/* Get the CmdBlk and CtrlBlk base registers */
-	bar0 = pci_resource_start(dev, 0);
-	virt_base = pci_ioremap_bar(dev, 0);
-	if (virt_base == NULL) {
-		printk(KERN_ERR "%s: Unable to remap BAR 0 address: 0x%lx\n",
-				DRV_NAME, bar0);
-		return -ENOMEM;
-	}
-	cmd_base = (unsigned long)virt_base + IOC4_CMD_OFFSET;
-	ctl = (unsigned long)virt_base + IOC4_CTRL_OFFSET;
-	irqport = (unsigned long)virt_base + IOC4_INTR_OFFSET;
-
-	cmd_phys_base = bar0 + IOC4_CMD_OFFSET;
-	if (request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE,
-			       DRV_NAME) == NULL) {
-		printk(KERN_ERR "%s %s -- ERROR: addresses 0x%08lx to 0x%08lx "
-		       "already in use\n", DRV_NAME, pci_name(dev),
-		       cmd_phys_base, cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE);
-		rc = -EBUSY;
-		goto req_mem_rgn_err;
-	}
-
-	/* Initialize the IO registers */
-	memset(&hw, 0, sizeof(hw));
-	sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport);
-	hw.irq = dev->irq;
-	hw.dev = &dev->dev;
-
-	/* Initialize chipset IRQ registers */
-	writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4));
-
-	rc = ide_host_add(&sgiioc4_port_info, hws, 1, NULL);
-	if (!rc)
-		return 0;
-
-	release_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE);
-req_mem_rgn_err:
-	iounmap(virt_base);
-	return rc;
-}
-
-static unsigned int pci_init_sgiioc4(struct pci_dev *dev)
-{
-	int ret;
-
-	printk(KERN_INFO "%s: IDE controller at PCI slot %s, revision %d\n",
-			 DRV_NAME, pci_name(dev), dev->revision);
-
-	if (dev->revision < IOC4_SUPPORTED_FIRMWARE_REV) {
-		printk(KERN_ERR "Skipping %s IDE controller in slot %s: "
-				"firmware is obsolete - please upgrade to "
-				"revision46 or higher\n",
-				DRV_NAME, pci_name(dev));
-		ret = -EAGAIN;
-		goto out;
-	}
-	ret = sgiioc4_ide_setup_pci_device(dev);
-out:
-	return ret;
-}
-
-static int ioc4_ide_attach_one(struct ioc4_driver_data *idd)
-{
-	/*
-	 * PCI-RT does not bring out IDE connection.
-	 * Do not attach to this particular IOC4.
-	 */
-	if (idd->idd_variant == IOC4_VARIANT_PCI_RT)
-		return 0;
-
-	return pci_init_sgiioc4(idd->idd_pdev);
-}
-
-static struct ioc4_submodule ioc4_ide_submodule = {
-	.is_name = "IOC4_ide",
-	.is_owner = THIS_MODULE,
-	.is_probe = ioc4_ide_attach_one,
-};
-
-static int __init ioc4_ide_init(void)
-{
-	return ioc4_register_submodule(&ioc4_ide_submodule);
-}
-
-late_initcall(ioc4_ide_init); /* Call only after IDE init is done */
-
-MODULE_AUTHOR("Aniket Malatpure/Jeremy Higdon");
-MODULE_DESCRIPTION("IDE PCI driver module for SGI IOC4 Base-IO Card");
-MODULE_LICENSE("GPL");
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 05/28] PCI/hotplug: remove the sgi_hotplug driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (3 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 04/28] ide: remove the sgiioc4 driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 06/28] tty/serial: remove the sn_console driver Christoph Hellwig
                   ` (21 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/pci/hotplug/Kconfig       |   9 -
 drivers/pci/hotplug/Makefile      |   1 -
 drivers/pci/hotplug/sgi_hotplug.c | 700 ------------------------------
 3 files changed, 710 deletions(-)
 delete mode 100644 drivers/pci/hotplug/sgi_hotplug.c

diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig
index e9f78eb390d2..e7b493c22bf3 100644
--- a/drivers/pci/hotplug/Kconfig
+++ b/drivers/pci/hotplug/Kconfig
@@ -147,15 +147,6 @@ config HOTPLUG_PCI_RPA_DLPAR
 
 	  When in doubt, say N.
 
-config HOTPLUG_PCI_SGI
-	tristate "SGI PCI Hotplug Support"
-	depends on IA64_SGI_SN2 || IA64_GENERIC
-	help
-	  Say Y here if you want to use the SGI Altix Hotplug
-	  Driver for PCI devices.
-
-	  When in doubt, say N.
-
 config HOTPLUG_PCI_S390
 	bool "System z PCI Hotplug Support"
 	depends on S390 && 64BIT
diff --git a/drivers/pci/hotplug/Makefile b/drivers/pci/hotplug/Makefile
index 7e3331603714..5196983220df 100644
--- a/drivers/pci/hotplug/Makefile
+++ b/drivers/pci/hotplug/Makefile
@@ -18,7 +18,6 @@ obj-$(CONFIG_HOTPLUG_PCI_SHPC)		+= shpchp.o
 obj-$(CONFIG_HOTPLUG_PCI_POWERNV)	+= pnv-php.o
 obj-$(CONFIG_HOTPLUG_PCI_RPA)		+= rpaphp.o
 obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR)	+= rpadlpar_io.o
-obj-$(CONFIG_HOTPLUG_PCI_SGI)		+= sgi_hotplug.o
 obj-$(CONFIG_HOTPLUG_PCI_ACPI)		+= acpiphp.o
 obj-$(CONFIG_HOTPLUG_PCI_S390)		+= s390_pci_hpc.o
 
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
deleted file mode 100644
index 231f5bdd3d2d..000000000000
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ /dev/null
@@ -1,700 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2005-2006 Silicon Graphics, Inc. All rights reserved.
- *
- * This work was based on the 2.4/2.6 kernel development by Dick Reigner.
- * Work to add BIOS PROM support was completed by Mike Habeck.
- */
-
-#include <linux/acpi.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/pci_hotplug.h>
-#include <linux/proc_fs.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/mutex.h>
-
-#include <asm/sn/addrs.h>
-#include <asm/sn/geo.h>
-#include <asm/sn/l1.h>
-#include <asm/sn/module.h>
-#include <asm/sn/pcibr_provider.h>
-#include <asm/sn/pcibus_provider_defs.h>
-#include <asm/sn/pcidev.h>
-#include <asm/sn/sn_feature_sets.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/types.h>
-#include <asm/sn/acpi.h>
-
-#include "../pci.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("SGI (prarit@sgi.com, dickie@sgi.com, habeck@sgi.com)");
-MODULE_DESCRIPTION("SGI Altix Hot Plug PCI Controller Driver");
-
-
-/* SAL call error codes. Keep in sync with prom header io/include/pcibr.h */
-#define PCI_SLOT_ALREADY_UP		2	/* slot already up */
-#define PCI_SLOT_ALREADY_DOWN		3	/* slot already down */
-#define PCI_L1_ERR			7	/* L1 console command error */
-#define PCI_EMPTY_33MHZ			15	/* empty 33 MHz bus */
-
-
-#define PCIIO_ASIC_TYPE_TIOCA		4
-#define PCI_L1_QSIZE			128	/* our L1 message buffer size */
-#define SN_MAX_HP_SLOTS			32	/* max hotplug slots */
-#define SN_SLOT_NAME_SIZE		33	/* size of name string */
-
-/* internal list head */
-static struct list_head sn_hp_list;
-
-/* hotplug_slot struct's private pointer */
-struct slot {
-	int device_num;
-	struct pci_bus *pci_bus;
-	/* this struct for glue internal only */
-	struct hotplug_slot hotplug_slot;
-	struct list_head hp_list;
-	char physical_path[SN_SLOT_NAME_SIZE];
-};
-
-struct pcibr_slot_enable_resp {
-	int resp_sub_errno;
-	char resp_l1_msg[PCI_L1_QSIZE + 1];
-};
-
-struct pcibr_slot_disable_resp {
-	int resp_sub_errno;
-	char resp_l1_msg[PCI_L1_QSIZE + 1];
-};
-
-enum sn_pci_req_e {
-	PCI_REQ_SLOT_ELIGIBLE,
-	PCI_REQ_SLOT_DISABLE
-};
-
-static int enable_slot(struct hotplug_slot *slot);
-static int disable_slot(struct hotplug_slot *slot);
-static inline int get_power_status(struct hotplug_slot *slot, u8 *value);
-
-static const struct hotplug_slot_ops sn_hotplug_slot_ops = {
-	.enable_slot            = enable_slot,
-	.disable_slot           = disable_slot,
-	.get_power_status       = get_power_status,
-};
-
-static DEFINE_MUTEX(sn_hotplug_mutex);
-
-static struct slot *to_slot(struct hotplug_slot *bss_hotplug_slot)
-{
-	return container_of(bss_hotplug_slot, struct slot, hotplug_slot);
-}
-
-static ssize_t path_show(struct pci_slot *pci_slot, char *buf)
-{
-	int retval = -ENOENT;
-	struct slot *slot = to_slot(pci_slot->hotplug);
-
-	if (!slot)
-		return retval;
-
-	retval = sprintf(buf, "%s\n", slot->physical_path);
-	return retval;
-}
-
-static struct pci_slot_attribute sn_slot_path_attr = __ATTR_RO(path);
-
-static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
-{
-	struct pcibus_info *pcibus_info;
-	u16 busnum, segment, ioboard_type;
-
-	pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
-
-	/* Check to see if this is a valid slot on 'pci_bus' */
-	if (!(pcibus_info->pbi_valid_devices & (1 << device)))
-		return -EPERM;
-
-	ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
-	busnum = pcibus_info->pbi_buscommon.bs_persist_busnum;
-	segment = pci_domain_nr(pci_bus) & 0xf;
-
-	/* Do not allow hotplug operations on base I/O cards */
-	if ((ioboard_type == L1_BRICKTYPE_IX ||
-	     ioboard_type == L1_BRICKTYPE_IA) &&
-	    (segment == 1 && busnum == 0 && device != 1))
-		return -EPERM;
-
-	return 1;
-}
-
-static int sn_pci_bus_valid(struct pci_bus *pci_bus)
-{
-	struct pcibus_info *pcibus_info;
-	u32 asic_type;
-	u16 ioboard_type;
-
-	/* Don't register slots hanging off the TIOCA bus */
-	pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
-	asic_type = pcibus_info->pbi_buscommon.bs_asic_type;
-	if (asic_type == PCIIO_ASIC_TYPE_TIOCA)
-		return -EPERM;
-
-	/* Only register slots in I/O Bricks that support hotplug */
-	ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
-	switch (ioboard_type) {
-		case L1_BRICKTYPE_IX:
-		case L1_BRICKTYPE_PX:
-		case L1_BRICKTYPE_IA:
-		case L1_BRICKTYPE_PA:
-		case L1_BOARDTYPE_PCIX3SLOT:
-			return 1;
-			break;
-		default:
-			return -EPERM;
-			break;
-	}
-
-	return -EIO;
-}
-
-static int sn_hp_slot_private_alloc(struct hotplug_slot **bss_hotplug_slot,
-				    struct pci_bus *pci_bus, int device,
-				    char *name)
-{
-	struct pcibus_info *pcibus_info;
-	struct slot *slot;
-
-	pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
-
-	slot = kzalloc(sizeof(*slot), GFP_KERNEL);
-	if (!slot)
-		return -ENOMEM;
-
-	slot->device_num = device;
-	slot->pci_bus = pci_bus;
-	sprintf(name, "%04x:%02x:%02x",
-		pci_domain_nr(pci_bus),
-		((u16)pcibus_info->pbi_buscommon.bs_persist_busnum),
-		device + 1);
-
-	sn_generate_path(pci_bus, slot->physical_path);
-
-	list_add(&slot->hp_list, &sn_hp_list);
-	*bss_hotplug_slot = &slot->hotplug_slot;
-
-	return 0;
-}
-
-static struct hotplug_slot *sn_hp_destroy(void)
-{
-	struct slot *slot;
-	struct pci_slot *pci_slot;
-	struct hotplug_slot *bss_hotplug_slot = NULL;
-
-	list_for_each_entry(slot, &sn_hp_list, hp_list) {
-		bss_hotplug_slot = &slot->hotplug_slot;
-		pci_slot = bss_hotplug_slot->pci_slot;
-		list_del(&slot->hp_list);
-		sysfs_remove_file(&pci_slot->kobj,
-				  &sn_slot_path_attr.attr);
-		break;
-	}
-	return bss_hotplug_slot;
-}
-
-static void sn_bus_free_data(struct pci_dev *dev)
-{
-	struct pci_bus *subordinate_bus;
-	struct pci_dev *child;
-
-	/* Recursively clean up sn_irq_info structs */
-	if (dev->subordinate) {
-		subordinate_bus = dev->subordinate;
-		list_for_each_entry(child, &subordinate_bus->devices, bus_list)
-			sn_bus_free_data(child);
-	}
-	/*
-	 * Some drivers may use dma accesses during the
-	 * driver remove function. We release the sysdata
-	 * areas after the driver remove functions have
-	 * been called.
-	 */
-	sn_bus_store_sysdata(dev);
-	sn_pci_unfixup_slot(dev);
-}
-
-static int sn_slot_enable(struct hotplug_slot *bss_hotplug_slot,
-			  int device_num, char **ssdt)
-{
-	struct slot *slot = to_slot(bss_hotplug_slot);
-	struct pcibus_info *pcibus_info;
-	struct pcibr_slot_enable_resp resp;
-	int rc;
-
-	pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
-
-	/*
-	 * Power-on and initialize the slot in the SN
-	 * PCI infrastructure.
-	 */
-	rc = sal_pcibr_slot_enable(pcibus_info, device_num, &resp, ssdt);
-
-
-	if (rc == PCI_SLOT_ALREADY_UP) {
-		pci_dbg(slot->pci_bus->self, "is already active\n");
-		return 1; /* return 1 to user */
-	}
-
-	if (rc == PCI_L1_ERR) {
-		pci_dbg(slot->pci_bus->self, "L1 failure %d with message: %s",
-			resp.resp_sub_errno, resp.resp_l1_msg);
-		return -EPERM;
-	}
-
-	if (rc) {
-		pci_dbg(slot->pci_bus->self, "insert failed with error %d sub-error %d\n",
-			rc, resp.resp_sub_errno);
-		return -EIO;
-	}
-
-	pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
-	pcibus_info->pbi_enabled_devices |= (1 << device_num);
-
-	return 0;
-}
-
-static int sn_slot_disable(struct hotplug_slot *bss_hotplug_slot,
-			   int device_num, int action)
-{
-	struct slot *slot = to_slot(bss_hotplug_slot);
-	struct pcibus_info *pcibus_info;
-	struct pcibr_slot_disable_resp resp;
-	int rc;
-
-	pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
-
-	rc = sal_pcibr_slot_disable(pcibus_info, device_num, action, &resp);
-
-	if ((action == PCI_REQ_SLOT_ELIGIBLE) &&
-	    (rc == PCI_SLOT_ALREADY_DOWN)) {
-		pci_dbg(slot->pci_bus->self, "Slot %s already inactive\n", slot->physical_path);
-		return 1; /* return 1 to user */
-	}
-
-	if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_EMPTY_33MHZ)) {
-		pci_dbg(slot->pci_bus->self, "Cannot remove last 33MHz card\n");
-		return -EPERM;
-	}
-
-	if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_L1_ERR)) {
-		pci_dbg(slot->pci_bus->self, "L1 failure %d with message \n%s\n",
-			resp.resp_sub_errno, resp.resp_l1_msg);
-		return -EPERM;
-	}
-
-	if ((action == PCI_REQ_SLOT_ELIGIBLE) && rc) {
-		pci_dbg(slot->pci_bus->self, "remove failed with error %d sub-error %d\n",
-			rc, resp.resp_sub_errno);
-		return -EIO;
-	}
-
-	if ((action == PCI_REQ_SLOT_ELIGIBLE) && !rc)
-		return 0;
-
-	if ((action == PCI_REQ_SLOT_DISABLE) && !rc) {
-		pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
-		pcibus_info->pbi_enabled_devices &= ~(1 << device_num);
-		pci_dbg(slot->pci_bus->self, "remove successful\n");
-		return 0;
-	}
-
-	if ((action == PCI_REQ_SLOT_DISABLE) && rc) {
-		pci_dbg(slot->pci_bus->self, "remove failed rc = %d\n", rc);
-	}
-
-	return rc;
-}
-
-/*
- * Power up and configure the slot via a SAL call to PROM.
- * Scan slot (and any children), do any platform specific fixup,
- * and find device driver.
- */
-static int enable_slot(struct hotplug_slot *bss_hotplug_slot)
-{
-	struct slot *slot = to_slot(bss_hotplug_slot);
-	struct pci_bus *new_bus = NULL;
-	struct pci_dev *dev;
-	int num_funcs;
-	int new_ppb = 0;
-	int rc;
-	char *ssdt = NULL;
-	void pcibios_fixup_device_resources(struct pci_dev *);
-
-	/* Serialize the Linux PCI infrastructure */
-	mutex_lock(&sn_hotplug_mutex);
-
-	/*
-	 * Power-on and initialize the slot in the SN
-	 * PCI infrastructure. Also, retrieve the ACPI SSDT
-	 * table for the slot (if ACPI capable PROM).
-	 */
-	rc = sn_slot_enable(bss_hotplug_slot, slot->device_num, &ssdt);
-	if (rc) {
-		mutex_unlock(&sn_hotplug_mutex);
-		return rc;
-	}
-
-	if (ssdt)
-		ssdt = __va(ssdt);
-	/* Add the new SSDT for the slot to the ACPI namespace */
-	if (SN_ACPI_BASE_SUPPORT() && ssdt) {
-		acpi_status ret;
-
-		ret = acpi_load_table((struct acpi_table_header *)ssdt);
-		if (ACPI_FAILURE(ret)) {
-			printk(KERN_ERR "%s: acpi_load_table failed (0x%x)\n",
-			       __func__, ret);
-			/* try to continue on */
-		}
-	}
-
-	num_funcs = pci_scan_slot(slot->pci_bus,
-				  PCI_DEVFN(slot->device_num + 1, 0));
-	if (!num_funcs) {
-		pci_dbg(slot->pci_bus->self, "no device in slot\n");
-		mutex_unlock(&sn_hotplug_mutex);
-		return -ENODEV;
-	}
-
-	/*
-	 * Map SN resources for all functions on the card
-	 * to the Linux PCI interface and tell the drivers
-	 * about them.
-	 */
-	list_for_each_entry(dev, &slot->pci_bus->devices, bus_list) {
-		if (PCI_SLOT(dev->devfn) != slot->device_num + 1)
-			continue;
-
-		/* Need to do slot fixup on PPB before fixup of children
-		 * (PPB's pcidev_info needs to be in pcidev_info list
-		 * before child's SN_PCIDEV_INFO() call to setup
-		 * pdi_host_pcidev_info).
-		 */
-		pcibios_fixup_device_resources(dev);
-		if (SN_ACPI_BASE_SUPPORT())
-			sn_acpi_slot_fixup(dev);
-		else
-			sn_io_slot_fixup(dev);
-		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
-			pci_hp_add_bridge(dev);
-			if (dev->subordinate) {
-				new_bus = dev->subordinate;
-				new_ppb = 1;
-			}
-		}
-	}
-
-	/*
-	 * Add the slot's devices to the ACPI infrastructure */
-	if (SN_ACPI_BASE_SUPPORT() && ssdt) {
-		unsigned long long adr;
-		struct acpi_device *pdevice;
-		acpi_handle phandle;
-		acpi_handle chandle = NULL;
-		acpi_handle rethandle;
-		acpi_status ret;
-
-		phandle = acpi_device_handle(PCI_CONTROLLER(slot->pci_bus)->companion);
-
-		if (acpi_bus_get_device(phandle, &pdevice)) {
-			pci_dbg(slot->pci_bus->self, "no parent device, assuming NULL\n");
-			pdevice = NULL;
-		}
-
-		acpi_scan_lock_acquire();
-		/*
-		 * Walk the rootbus node's immediate children looking for
-		 * the slot's device node(s). There can be more than
-		 * one for multifunction devices.
-		 */
-		for (;;) {
-			rethandle = NULL;
-			ret = acpi_get_next_object(ACPI_TYPE_DEVICE,
-						   phandle, chandle,
-						   &rethandle);
-
-			if (ret == AE_NOT_FOUND || rethandle == NULL)
-				break;
-
-			chandle = rethandle;
-
-			ret = acpi_evaluate_integer(chandle, METHOD_NAME__ADR,
-						    NULL, &adr);
-
-			if (ACPI_SUCCESS(ret) &&
-			    (adr>>16) == (slot->device_num + 1)) {
-
-				ret = acpi_bus_scan(chandle);
-				if (ACPI_FAILURE(ret)) {
-					printk(KERN_ERR "%s: acpi_bus_scan failed (0x%x) for slot %d func %d\n",
-					       __func__, ret, (int)(adr>>16),
-					       (int)(adr&0xffff));
-					/* try to continue on */
-				}
-			}
-		}
-		acpi_scan_lock_release();
-	}
-
-	pci_lock_rescan_remove();
-
-	/* Call the driver for the new device */
-	pci_bus_add_devices(slot->pci_bus);
-	/* Call the drivers for the new devices subordinate to PPB */
-	if (new_ppb)
-		pci_bus_add_devices(new_bus);
-
-	pci_unlock_rescan_remove();
-	mutex_unlock(&sn_hotplug_mutex);
-
-	if (rc == 0)
-		pci_dbg(slot->pci_bus->self, "insert operation successful\n");
-	else
-		pci_dbg(slot->pci_bus->self, "insert operation failed rc = %d\n", rc);
-
-	return rc;
-}
-
-static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
-{
-	struct slot *slot = to_slot(bss_hotplug_slot);
-	struct pci_dev *dev, *temp;
-	int rc;
-	acpi_handle ssdt_hdl = NULL;
-
-	/* Acquire update access to the bus */
-	mutex_lock(&sn_hotplug_mutex);
-
-	/* is it okay to bring this slot down? */
-	rc = sn_slot_disable(bss_hotplug_slot, slot->device_num,
-			     PCI_REQ_SLOT_ELIGIBLE);
-	if (rc)
-		goto leaving;
-
-	/* free the ACPI resources for the slot */
-	if (SN_ACPI_BASE_SUPPORT() &&
-		PCI_CONTROLLER(slot->pci_bus)->companion) {
-		unsigned long long adr;
-		struct acpi_device *device;
-		acpi_handle phandle;
-		acpi_handle chandle = NULL;
-		acpi_handle rethandle;
-		acpi_status ret;
-
-		/* Get the rootbus node pointer */
-		phandle = acpi_device_handle(PCI_CONTROLLER(slot->pci_bus)->companion);
-
-		acpi_scan_lock_acquire();
-		/*
-		 * Walk the rootbus node's immediate children looking for
-		 * the slot's device node(s). There can be more than
-		 * one for multifunction devices.
-		 */
-		for (;;) {
-			rethandle = NULL;
-			ret = acpi_get_next_object(ACPI_TYPE_DEVICE,
-						   phandle, chandle,
-						   &rethandle);
-
-			if (ret == AE_NOT_FOUND || rethandle == NULL)
-				break;
-
-			chandle = rethandle;
-
-			ret = acpi_evaluate_integer(chandle,
-						    METHOD_NAME__ADR,
-						    NULL, &adr);
-			if (ACPI_SUCCESS(ret) &&
-			    (adr>>16) == (slot->device_num + 1)) {
-				/* retain the owner id */
-				ssdt_hdl = chandle;
-
-				ret = acpi_bus_get_device(chandle,
-							  &device);
-				if (ACPI_SUCCESS(ret))
-					acpi_bus_trim(device);
-			}
-		}
-		acpi_scan_lock_release();
-	}
-
-	pci_lock_rescan_remove();
-	/* Free the SN resources assigned to the Linux device.*/
-	list_for_each_entry_safe(dev, temp, &slot->pci_bus->devices, bus_list) {
-		if (PCI_SLOT(dev->devfn) != slot->device_num + 1)
-			continue;
-
-		pci_dev_get(dev);
-		sn_bus_free_data(dev);
-		pci_stop_and_remove_bus_device(dev);
-		pci_dev_put(dev);
-	}
-	pci_unlock_rescan_remove();
-
-	/* Remove the SSDT for the slot from the ACPI namespace */
-	if (SN_ACPI_BASE_SUPPORT() && ssdt_hdl) {
-		acpi_status ret;
-		ret = acpi_unload_parent_table(ssdt_hdl);
-		if (ACPI_FAILURE(ret)) {
-			acpi_handle_err(ssdt_hdl,
-					"%s: acpi_unload_parent_table failed (0x%x)\n",
-					__func__, ret);
-			/* try to continue on */
-		}
-	}
-
-	/* free the collected sysdata pointers */
-	sn_bus_free_sysdata();
-
-	/* Deactivate slot */
-	rc = sn_slot_disable(bss_hotplug_slot, slot->device_num,
-			     PCI_REQ_SLOT_DISABLE);
- leaving:
-	/* Release the bus lock */
-	mutex_unlock(&sn_hotplug_mutex);
-
-	return rc;
-}
-
-static inline int get_power_status(struct hotplug_slot *bss_hotplug_slot,
-				   u8 *value)
-{
-	struct slot *slot = to_slot(bss_hotplug_slot);
-	struct pcibus_info *pcibus_info;
-	u32 power;
-
-	pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
-	mutex_lock(&sn_hotplug_mutex);
-	power = pcibus_info->pbi_enabled_devices & (1 << slot->device_num);
-	*value = power ? 1 : 0;
-	mutex_unlock(&sn_hotplug_mutex);
-	return 0;
-}
-
-static void sn_release_slot(struct hotplug_slot *bss_hotplug_slot)
-{
-	kfree(to_slot(bss_hotplug_slot));
-}
-
-static int sn_hotplug_slot_register(struct pci_bus *pci_bus)
-{
-	int device;
-	struct pci_slot *pci_slot;
-	struct hotplug_slot *bss_hotplug_slot;
-	char name[SN_SLOT_NAME_SIZE];
-	int rc = 0;
-
-	/*
-	 * Currently only four devices are supported,
-	 * in the future there maybe more -- up to 32.
-	 */
-
-	for (device = 0; device < SN_MAX_HP_SLOTS ; device++) {
-		if (sn_pci_slot_valid(pci_bus, device) != 1)
-			continue;
-
-		if (sn_hp_slot_private_alloc(&bss_hotplug_slot,
-					     pci_bus, device, name)) {
-			rc = -ENOMEM;
-			goto alloc_err;
-		}
-		bss_hotplug_slot->ops = &sn_hotplug_slot_ops;
-
-		rc = pci_hp_register(bss_hotplug_slot, pci_bus, device, name);
-		if (rc)
-			goto register_err;
-
-		pci_slot = bss_hotplug_slot->pci_slot;
-		rc = sysfs_create_file(&pci_slot->kobj,
-				       &sn_slot_path_attr.attr);
-		if (rc)
-			goto alloc_err;
-	}
-	pci_dbg(pci_bus->self, "Registered bus with hotplug\n");
-	return rc;
-
-register_err:
-	pci_dbg(pci_bus->self, "bus failed to register with err = %d\n",
-		rc);
-
-	/* destroy THIS element */
-	sn_hp_destroy();
-	sn_release_slot(bss_hotplug_slot);
-
-alloc_err:
-	/* destroy anything else on the list */
-	while ((bss_hotplug_slot = sn_hp_destroy())) {
-		pci_hp_deregister(bss_hotplug_slot);
-		sn_release_slot(bss_hotplug_slot);
-	}
-
-	return rc;
-}
-
-static int __init sn_pci_hotplug_init(void)
-{
-	struct pci_bus *pci_bus = NULL;
-	int rc;
-	int registered = 0;
-
-	if (!sn_prom_feature_available(PRF_HOTPLUG_SUPPORT)) {
-		printk(KERN_ERR "%s: PROM version does not support hotplug.\n",
-		       __func__);
-		return -EPERM;
-	}
-
-	INIT_LIST_HEAD(&sn_hp_list);
-
-	while ((pci_bus = pci_find_next_bus(pci_bus))) {
-		if (!pci_bus->sysdata)
-			continue;
-
-		rc = sn_pci_bus_valid(pci_bus);
-		if (rc != 1) {
-			pci_dbg(pci_bus->self, "not a valid hotplug bus\n");
-			continue;
-		}
-		pci_dbg(pci_bus->self, "valid hotplug bus\n");
-
-		rc = sn_hotplug_slot_register(pci_bus);
-		if (!rc) {
-			registered = 1;
-		} else {
-			registered = 0;
-			break;
-		}
-	}
-
-	return registered == 1 ? 0 : -ENODEV;
-}
-
-static void __exit sn_pci_hotplug_exit(void)
-{
-	struct hotplug_slot *bss_hotplug_slot;
-
-	while ((bss_hotplug_slot = sn_hp_destroy())) {
-		pci_hp_deregister(bss_hotplug_slot);
-		sn_release_slot(bss_hotplug_slot);
-	}
-
-	if (!list_empty(&sn_hp_list))
-		printk(KERN_ERR "%s: internal list is not empty\n", __FILE__);
-}
-
-module_init(sn_pci_hotplug_init);
-module_exit(sn_pci_hotplug_exit);
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 06/28] tty/serial: remove the sn_console driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (4 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 05/28] PCI/hotplug: remove the sgi_hotplug driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 07/28] tty/serial: remove the ioc4_serial driver Christoph Hellwig
                   ` (20 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/configs/generic_defconfig   |    1 -
 arch/ia64/configs/gensparse_defconfig |    1 -
 arch/ia64/kernel/setup.c              |    7 -
 drivers/tty/serial/Kconfig            |   10 -
 drivers/tty/serial/Makefile           |    1 -
 drivers/tty/serial/sn_console.c       | 1036 -------------------------
 6 files changed, 1056 deletions(-)
 delete mode 100644 drivers/tty/serial/sn_console.c

diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index a41afb3ef209..62698ea5d3f2 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -94,7 +94,6 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
-CONFIG_SERIAL_SGI_L1_CONSOLE=y
 CONFIG_SERIAL_SGI_IOC4=y
 # CONFIG_HW_RANDOM is not set
 CONFIG_EFI_RTC=y
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 07484aa6f16f..b910318f2348 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -83,7 +83,6 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
-CONFIG_SERIAL_SGI_L1_CONSOLE=y
 CONFIG_SERIAL_SGI_IOC4=y
 CONFIG_SERIAL_SGI_IOC3=y
 # CONFIG_HW_RANDOM is not set
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index c9cfa760cd57..a0480a4e65c1 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -463,13 +463,6 @@ early_console_setup (char *cmdline)
 {
 	int earlycons = 0;
 
-#ifdef CONFIG_SERIAL_SGI_L1_CONSOLE
-	{
-		extern int sn_serial_console_early_setup(void);
-		if (!sn_serial_console_early_setup())
-			earlycons++;
-	}
-#endif
 #ifdef CONFIG_EFI_PCDP
 	if (!efi_setup_pcdp_console(cmdline))
 		earlycons++;
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 3083dbae35f7..e9930af78acc 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -855,16 +855,6 @@ config SERIAL_CPM_CONSOLE
 	  your boot loader (lilo or loadlin) about how to pass options to the
 	  kernel at boot time.)
 
-config SERIAL_SGI_L1_CONSOLE
-	bool "SGI Altix L1 serial console support"
-	depends on IA64_GENERIC || IA64_SGI_SN2
-	select SERIAL_CORE
-	select SERIAL_CORE_CONSOLE
-	help
-		If you have an SGI Altix and you would like to use the system
-		controller serial port as your console (you want this!),
-		say Y.  Otherwise, say N.
-
 config SERIAL_PIC32
 	tristate "Microchip PIC32 serial support"
 	depends on MACH_PIC32
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index 15a0fccadf7e..caa978980a6e 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -41,7 +41,6 @@ obj-$(CONFIG_SERIAL_HS_LPC32XX) += lpc32xx_hs.o
 obj-$(CONFIG_SERIAL_DZ) += dz.o
 obj-$(CONFIG_SERIAL_ZS) += zs.o
 obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o
-obj-$(CONFIG_SERIAL_SGI_L1_CONSOLE) += sn_console.o
 obj-$(CONFIG_SERIAL_CPM) += cpm_uart/
 obj-$(CONFIG_SERIAL_IMX) += imx.o
 obj-$(CONFIG_SERIAL_MPC52xx) += mpc52xx_uart.o
diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c
deleted file mode 100644
index 283493358a62..000000000000
--- a/drivers/tty/serial/sn_console.c
+++ /dev/null
@@ -1,1036 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * C-Brick Serial Port (and console) driver for SGI Altix machines.
- *
- * This driver is NOT suitable for talking to the l1-controller for
- * anything other than 'console activities' --- please use the l1
- * driver for that.
- *
- *
- * Copyright (c) 2004-2006 Silicon Graphics, Inc.  All Rights Reserved.
- *
- * Contact information:  Silicon Graphics, Inc., 1500 Crittenden Lane,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/NoticeExplan
- */
-
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/sysrq.h>
-#include <linux/circ_buf.h>
-#include <linux/serial_reg.h>
-#include <linux/delay.h> /* for mdelay */
-#include <linux/miscdevice.h>
-#include <linux/serial_core.h>
-
-#include <asm/io.h>
-#include <asm/sn/simulator.h>
-#include <asm/sn/sn_sal.h>
-
-/* number of characters we can transmit to the SAL console at a time */
-#define SN_SAL_MAX_CHARS 120
-
-/* 64K, when we're asynch, it must be at least printk's LOG_BUF_LEN to
- * avoid losing chars, (always has to be a power of 2) */
-#define SN_SAL_BUFFER_SIZE (64 * (1 << 10))
-
-#define SN_SAL_UART_FIFO_DEPTH 16
-#define SN_SAL_UART_FIFO_SPEED_CPS (9600/10)
-
-/* sn_transmit_chars() calling args */
-#define TRANSMIT_BUFFERED	0
-#define TRANSMIT_RAW		1
-
-/* To use dynamic numbers only and not use the assigned major and minor,
- * define the following.. */
-				  /* #define USE_DYNAMIC_MINOR 1 *//* use dynamic minor number */
-#define USE_DYNAMIC_MINOR 0	/* Don't rely on misc_register dynamic minor */
-
-/* Device name we're using */
-#define DEVICE_NAME "ttySG"
-#define DEVICE_NAME_DYNAMIC "ttySG0"	/* need full name for misc_register */
-/* The major/minor we are using, ignored for USE_DYNAMIC_MINOR */
-#define DEVICE_MAJOR 204
-#define DEVICE_MINOR 40
-
-#ifdef CONFIG_MAGIC_SYSRQ
-static char sysrq_serial_str[] = "\eSYS";
-static char *sysrq_serial_ptr = sysrq_serial_str;
-static unsigned long sysrq_requested;
-#endif /* CONFIG_MAGIC_SYSRQ */
-
-/*
- * Port definition - this kinda drives it all
- */
-struct sn_cons_port {
-	struct timer_list sc_timer;
-	struct uart_port sc_port;
-	struct sn_sal_ops {
-		int (*sal_puts_raw) (const char *s, int len);
-		int (*sal_puts) (const char *s, int len);
-		int (*sal_getc) (void);
-		int (*sal_input_pending) (void);
-		void (*sal_wakeup_transmit) (struct sn_cons_port *, int);
-	} *sc_ops;
-	unsigned long sc_interrupt_timeout;
-	int sc_is_asynch;
-};
-
-static struct sn_cons_port sal_console_port;
-static int sn_process_input;
-
-/* Only used if USE_DYNAMIC_MINOR is set to 1 */
-static struct miscdevice misc;	/* used with misc_register for dynamic */
-
-extern void early_sn_setup(void);
-
-#undef DEBUG
-#ifdef DEBUG
-static int sn_debug_printf(const char *fmt, ...);
-#define DPRINTF(x...) sn_debug_printf(x)
-#else
-#define DPRINTF(x...) do { } while (0)
-#endif
-
-/* Prototypes */
-static int snt_hw_puts_raw(const char *, int);
-static int snt_hw_puts_buffered(const char *, int);
-static int snt_poll_getc(void);
-static int snt_poll_input_pending(void);
-static int snt_intr_getc(void);
-static int snt_intr_input_pending(void);
-static void sn_transmit_chars(struct sn_cons_port *, int);
-
-/* A table for polling:
- */
-static struct sn_sal_ops poll_ops = {
-	.sal_puts_raw = snt_hw_puts_raw,
-	.sal_puts = snt_hw_puts_raw,
-	.sal_getc = snt_poll_getc,
-	.sal_input_pending = snt_poll_input_pending
-};
-
-/* A table for interrupts enabled */
-static struct sn_sal_ops intr_ops = {
-	.sal_puts_raw = snt_hw_puts_raw,
-	.sal_puts = snt_hw_puts_buffered,
-	.sal_getc = snt_intr_getc,
-	.sal_input_pending = snt_intr_input_pending,
-	.sal_wakeup_transmit = sn_transmit_chars
-};
-
-/* the console does output in two distinctly different ways:
- * synchronous (raw) and asynchronous (buffered).  initially, early_printk
- * does synchronous output.  any data written goes directly to the SAL
- * to be output (incidentally, it is internally buffered by the SAL)
- * after interrupts and timers are initialized and available for use,
- * the console init code switches to asynchronous output.  this is
- * also the earliest opportunity to begin polling for console input.
- * after console initialization, console output and tty (serial port)
- * output is buffered and sent to the SAL asynchronously (either by
- * timer callback or by UART interrupt) */
-
-/* routines for running the console in polling mode */
-
-/**
- * snt_poll_getc - Get a character from the console in polling mode
- *
- */
-static int snt_poll_getc(void)
-{
-	int ch;
-
-	ia64_sn_console_getc(&ch);
-	return ch;
-}
-
-/**
- * snt_poll_input_pending - Check if any input is waiting - polling mode.
- *
- */
-static int snt_poll_input_pending(void)
-{
-	int status, input;
-
-	status = ia64_sn_console_check(&input);
-	return !status && input;
-}
-
-/* routines for an interrupt driven console (normal) */
-
-/**
- * snt_intr_getc - Get a character from the console, interrupt mode
- *
- */
-static int snt_intr_getc(void)
-{
-	return ia64_sn_console_readc();
-}
-
-/**
- * snt_intr_input_pending - Check if input is pending, interrupt mode
- *
- */
-static int snt_intr_input_pending(void)
-{
-	return ia64_sn_console_intr_status() & SAL_CONSOLE_INTR_RECV;
-}
-
-/* these functions are polled and interrupt */
-
-/**
- * snt_hw_puts_raw - Send raw string to the console, polled or interrupt mode
- * @s: String
- * @len: Length
- *
- */
-static int snt_hw_puts_raw(const char *s, int len)
-{
-	/* this will call the PROM and not return until this is done */
-	return ia64_sn_console_putb(s, len);
-}
-
-/**
- * snt_hw_puts_buffered - Send string to console, polled or interrupt mode
- * @s: String
- * @len: Length
- *
- */
-static int snt_hw_puts_buffered(const char *s, int len)
-{
-	/* queue data to the PROM */
-	return ia64_sn_console_xmit_chars((char *)s, len);
-}
-
-/* uart interface structs
- * These functions are associated with the uart_port that the serial core
- * infrastructure calls.
- *
- * Note: Due to how the console works, many routines are no-ops.
- */
-
-/**
- * snp_type - What type of console are we?
- * @port: Port to operate with (we ignore since we only have one port)
- *
- */
-static const char *snp_type(struct uart_port *port)
-{
-	return ("SGI SN L1");
-}
-
-/**
- * snp_tx_empty - Is the transmitter empty?  We pretend we're always empty
- * @port: Port to operate on (we ignore since we only have one port)
- *
- */
-static unsigned int snp_tx_empty(struct uart_port *port)
-{
-	return 1;
-}
-
-/**
- * snp_stop_tx - stop the transmitter - no-op for us
- * @port: Port to operat eon - we ignore - no-op function
- *
- */
-static void snp_stop_tx(struct uart_port *port)
-{
-}
-
-/**
- * snp_release_port - Free i/o and resources for port - no-op for us
- * @port: Port to operate on - we ignore - no-op function
- *
- */
-static void snp_release_port(struct uart_port *port)
-{
-}
-
-/**
- * snp_shutdown - shut down the port - free irq and disable - no-op for us
- * @port: Port to shut down - we ignore
- *
- */
-static void snp_shutdown(struct uart_port *port)
-{
-}
-
-/**
- * snp_set_mctrl - set control lines (dtr, rts, etc) - no-op for our console
- * @port: Port to operate on - we ignore
- * @mctrl: Lines to set/unset - we ignore
- *
- */
-static void snp_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-}
-
-/**
- * snp_get_mctrl - get contorl line info, we just return a static value
- * @port: port to operate on - we only have one port so we ignore this
- *
- */
-static unsigned int snp_get_mctrl(struct uart_port *port)
-{
-	return TIOCM_CAR | TIOCM_RNG | TIOCM_DSR | TIOCM_CTS;
-}
-
-/**
- * snp_stop_rx - Stop the receiver - we ignor ethis
- * @port: Port to operate on - we ignore
- *
- */
-static void snp_stop_rx(struct uart_port *port)
-{
-}
-
-/**
- * snp_start_tx - Start transmitter
- * @port: Port to operate on
- *
- */
-static void snp_start_tx(struct uart_port *port)
-{
-	if (sal_console_port.sc_ops->sal_wakeup_transmit)
-		sal_console_port.sc_ops->sal_wakeup_transmit(&sal_console_port,
-							     TRANSMIT_BUFFERED);
-
-}
-
-/**
- * snp_break_ctl - handle breaks - ignored by us
- * @port: Port to operate on
- * @break_state: Break state
- *
- */
-static void snp_break_ctl(struct uart_port *port, int break_state)
-{
-}
-
-/**
- * snp_startup - Start up the serial port - always return 0 (We're always on)
- * @port: Port to operate on
- *
- */
-static int snp_startup(struct uart_port *port)
-{
-	return 0;
-}
-
-/**
- * snp_set_termios - set termios stuff - we ignore these
- * @port: port to operate on
- * @termios: New settings
- * @termios: Old
- *
- */
-static void
-snp_set_termios(struct uart_port *port, struct ktermios *termios,
-		struct ktermios *old)
-{
-}
-
-/**
- * snp_request_port - allocate resources for port - ignored by us
- * @port: port to operate on
- *
- */
-static int snp_request_port(struct uart_port *port)
-{
-	return 0;
-}
-
-/**
- * snp_config_port - allocate resources, set up - we ignore,  we're always on
- * @port: Port to operate on
- * @flags: flags used for port setup
- *
- */
-static void snp_config_port(struct uart_port *port, int flags)
-{
-}
-
-/* Associate the uart functions above - given to serial core */
-
-static const struct uart_ops sn_console_ops = {
-	.tx_empty = snp_tx_empty,
-	.set_mctrl = snp_set_mctrl,
-	.get_mctrl = snp_get_mctrl,
-	.stop_tx = snp_stop_tx,
-	.start_tx = snp_start_tx,
-	.stop_rx = snp_stop_rx,
-	.break_ctl = snp_break_ctl,
-	.startup = snp_startup,
-	.shutdown = snp_shutdown,
-	.set_termios = snp_set_termios,
-	.pm = NULL,
-	.type = snp_type,
-	.release_port = snp_release_port,
-	.request_port = snp_request_port,
-	.config_port = snp_config_port,
-	.verify_port = NULL,
-};
-
-/* End of uart struct functions and defines */
-
-#ifdef DEBUG
-
-/**
- * sn_debug_printf - close to hardware debugging printf
- * @fmt: printf format
- *
- * This is as "close to the metal" as we can get, used when the driver
- * itself may be broken.
- *
- */
-static int sn_debug_printf(const char *fmt, ...)
-{
-	static char printk_buf[1024];
-	int printed_len;
-	va_list args;
-
-	va_start(args, fmt);
-	printed_len = vsnprintf(printk_buf, sizeof(printk_buf), fmt, args);
-
-	if (!sal_console_port.sc_ops) {
-		sal_console_port.sc_ops = &poll_ops;
-		early_sn_setup();
-	}
-	sal_console_port.sc_ops->sal_puts_raw(printk_buf, printed_len);
-
-	va_end(args);
-	return printed_len;
-}
-#endif				/* DEBUG */
-
-/*
- * Interrupt handling routines.
- */
-
-/**
- * sn_receive_chars - Grab characters, pass them to tty layer
- * @port: Port to operate on
- * @flags: irq flags
- *
- * Note: If we're not registered with the serial core infrastructure yet,
- * we don't try to send characters to it...
- *
- */
-static void
-sn_receive_chars(struct sn_cons_port *port, unsigned long flags)
-{
-	struct tty_port *tport = NULL;
-	int ch;
-
-	if (!port) {
-		printk(KERN_ERR "sn_receive_chars - port NULL so can't receive\n");
-		return;
-	}
-
-	if (!port->sc_ops) {
-		printk(KERN_ERR "sn_receive_chars - port->sc_ops  NULL so can't receive\n");
-		return;
-	}
-
-	if (port->sc_port.state) {
-		/* The serial_core stuffs are initialized, use them */
-		tport = &port->sc_port.state->port;
-	}
-
-	while (port->sc_ops->sal_input_pending()) {
-		ch = port->sc_ops->sal_getc();
-		if (ch < 0) {
-			printk(KERN_ERR "sn_console: An error occurred while "
-			       "obtaining data from the console (0x%0x)\n", ch);
-			break;
-		}
-#ifdef CONFIG_MAGIC_SYSRQ
-                if (sysrq_requested) {
-                        unsigned long sysrq_timeout = sysrq_requested + HZ*5;
-
-                        sysrq_requested = 0;
-                        if (ch && time_before(jiffies, sysrq_timeout)) {
-                                spin_unlock_irqrestore(&port->sc_port.lock, flags);
-                                handle_sysrq(ch);
-                                spin_lock_irqsave(&port->sc_port.lock, flags);
-                                /* ignore actual sysrq command char */
-                                continue;
-                        }
-                }
-                if (ch == *sysrq_serial_ptr) {
-                        if (!(*++sysrq_serial_ptr)) {
-                                sysrq_requested = jiffies;
-                                sysrq_serial_ptr = sysrq_serial_str;
-                        }
-			/*
-			 * ignore the whole sysrq string except for the
-			 * leading escape
-			 */
-			if (ch != '\e')
-				continue;
-                }
-                else
-			sysrq_serial_ptr = sysrq_serial_str;
-#endif /* CONFIG_MAGIC_SYSRQ */
-
-		/* record the character to pass up to the tty layer */
-		if (tport) {
-			if (tty_insert_flip_char(tport, ch, TTY_NORMAL) == 0)
-				break;
-		}
-		port->sc_port.icount.rx++;
-	}
-
-	if (tport)
-		tty_flip_buffer_push(tport);
-}
-
-/**
- * sn_transmit_chars - grab characters from serial core, send off
- * @port: Port to operate on
- * @raw: Transmit raw or buffered
- *
- * Note: If we're early, before we're registered with serial core, the
- * writes are going through sn_sal_console_write because that's how
- * register_console has been set up.  We currently could have asynch
- * polls calling this function due to sn_sal_switch_to_asynch but we can
- * ignore them until we register with the serial core stuffs.
- *
- */
-static void sn_transmit_chars(struct sn_cons_port *port, int raw)
-{
-	int xmit_count, tail, head, loops, ii;
-	int result;
-	char *start;
-	struct circ_buf *xmit;
-
-	if (!port)
-		return;
-
-	BUG_ON(!port->sc_is_asynch);
-
-	if (port->sc_port.state) {
-		/* We're initialized, using serial core infrastructure */
-		xmit = &port->sc_port.state->xmit;
-	} else {
-		/* Probably sn_sal_switch_to_asynch has been run but serial core isn't
-		 * initialized yet.  Just return.  Writes are going through
-		 * sn_sal_console_write (due to register_console) at this time.
-		 */
-		return;
-	}
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&port->sc_port)) {
-		/* Nothing to do. */
-		ia64_sn_console_intr_disable(SAL_CONSOLE_INTR_XMIT);
-		return;
-	}
-
-	head = xmit->head;
-	tail = xmit->tail;
-	start = &xmit->buf[tail];
-
-	/* twice around gets the tail to the end of the buffer and
-	 * then to the head, if needed */
-	loops = (head < tail) ? 2 : 1;
-
-	for (ii = 0; ii < loops; ii++) {
-		xmit_count = (head < tail) ?
-		    (UART_XMIT_SIZE - tail) : (head - tail);
-
-		if (xmit_count > 0) {
-			if (raw == TRANSMIT_RAW)
-				result =
-				    port->sc_ops->sal_puts_raw(start,
-							       xmit_count);
-			else
-				result =
-				    port->sc_ops->sal_puts(start, xmit_count);
-#ifdef DEBUG
-			if (!result)
-				DPRINTF("`");
-#endif
-			if (result > 0) {
-				xmit_count -= result;
-				port->sc_port.icount.tx += result;
-				tail += result;
-				tail &= UART_XMIT_SIZE - 1;
-				xmit->tail = tail;
-				start = &xmit->buf[tail];
-			}
-		}
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&port->sc_port);
-
-	if (uart_circ_empty(xmit))
-		snp_stop_tx(&port->sc_port);	/* no-op for us */
-}
-
-/**
- * sn_sal_interrupt - Handle console interrupts
- * @irq: irq #, useful for debug statements
- * @dev_id: our pointer to our port (sn_cons_port which contains the uart port)
- *
- */
-static irqreturn_t sn_sal_interrupt(int irq, void *dev_id)
-{
-	struct sn_cons_port *port = (struct sn_cons_port *)dev_id;
-	unsigned long flags;
-	int status = ia64_sn_console_intr_status();
-
-	if (!port)
-		return IRQ_NONE;
-
-	spin_lock_irqsave(&port->sc_port.lock, flags);
-	if (status & SAL_CONSOLE_INTR_RECV) {
-		sn_receive_chars(port, flags);
-	}
-	if (status & SAL_CONSOLE_INTR_XMIT) {
-		sn_transmit_chars(port, TRANSMIT_BUFFERED);
-	}
-	spin_unlock_irqrestore(&port->sc_port.lock, flags);
-	return IRQ_HANDLED;
-}
-
-/**
- * sn_sal_timer_poll - this function handles polled console mode
- * @data: A pointer to our sn_cons_port (which contains the uart port)
- *
- * data is the pointer that init_timer will store for us.  This function is
- * associated with init_timer to see if there is any console traffic.
- * Obviously not used in interrupt mode
- *
- */
-static void sn_sal_timer_poll(struct timer_list *t)
-{
-	struct sn_cons_port *port = from_timer(port, t, sc_timer);
-	unsigned long flags;
-
-	if (!port)
-		return;
-
-	if (!port->sc_port.irq) {
-		spin_lock_irqsave(&port->sc_port.lock, flags);
-		if (sn_process_input)
-			sn_receive_chars(port, flags);
-		sn_transmit_chars(port, TRANSMIT_RAW);
-		spin_unlock_irqrestore(&port->sc_port.lock, flags);
-		mod_timer(&port->sc_timer,
-			  jiffies + port->sc_interrupt_timeout);
-	}
-}
-
-/*
- * Boot-time initialization code
- */
-
-/**
- * sn_sal_switch_to_asynch - Switch to async mode (as opposed to synch)
- * @port: Our sn_cons_port (which contains the uart port)
- *
- * So this is used by sn_sal_serial_console_init (early on, before we're
- * registered with serial core).  It's also used by sn_sal_init
- * right after we've registered with serial core.  The later only happens
- * if we didn't already come through here via sn_sal_serial_console_init.
- *
- */
-static void __init sn_sal_switch_to_asynch(struct sn_cons_port *port)
-{
-	unsigned long flags;
-
-	if (!port)
-		return;
-
-	DPRINTF("sn_console: about to switch to asynchronous console\n");
-
-	/* without early_printk, we may be invoked late enough to race
-	 * with other cpus doing console IO at this point, however
-	 * console interrupts will never be enabled */
-	spin_lock_irqsave(&port->sc_port.lock, flags);
-
-	/* early_printk invocation may have done this for us */
-	if (!port->sc_ops)
-		port->sc_ops = &poll_ops;
-
-	/* we can't turn on the console interrupt (as request_irq
-	 * calls kmalloc, which isn't set up yet), so we rely on a
-	 * timer to poll for input and push data from the console
-	 * buffer.
-	 */
-	timer_setup(&port->sc_timer, sn_sal_timer_poll, 0);
-
-	if (IS_RUNNING_ON_SIMULATOR())
-		port->sc_interrupt_timeout = 6;
-	else {
-		/* 960cps / 16 char FIFO = 60HZ
-		 * HZ / (SN_SAL_FIFO_SPEED_CPS / SN_SAL_FIFO_DEPTH) */
-		port->sc_interrupt_timeout =
-		    HZ * SN_SAL_UART_FIFO_DEPTH / SN_SAL_UART_FIFO_SPEED_CPS;
-	}
-	mod_timer(&port->sc_timer, jiffies + port->sc_interrupt_timeout);
-
-	port->sc_is_asynch = 1;
-	spin_unlock_irqrestore(&port->sc_port.lock, flags);
-}
-
-/**
- * sn_sal_switch_to_interrupts - Switch to interrupt driven mode
- * @port: Our sn_cons_port (which contains the uart port)
- *
- * In sn_sal_init, after we're registered with serial core and
- * the port is added, this function is called to switch us to interrupt
- * mode.  We were previously in asynch/polling mode (using init_timer).
- *
- * We attempt to switch to interrupt mode here by calling
- * request_irq.  If that works out, we enable receive interrupts.
- */
-static void __init sn_sal_switch_to_interrupts(struct sn_cons_port *port)
-{
-	unsigned long flags;
-
-	if (port) {
-		DPRINTF("sn_console: switching to interrupt driven console\n");
-
-		if (request_irq(SGI_UART_VECTOR, sn_sal_interrupt,
-				IRQF_SHARED,
-				"SAL console driver", port) >= 0) {
-			spin_lock_irqsave(&port->sc_port.lock, flags);
-			port->sc_port.irq = SGI_UART_VECTOR;
-			port->sc_ops = &intr_ops;
-			irq_set_handler(port->sc_port.irq, handle_level_irq);
-
-			/* turn on receive interrupts */
-			ia64_sn_console_intr_enable(SAL_CONSOLE_INTR_RECV);
-			spin_unlock_irqrestore(&port->sc_port.lock, flags);
-		}
-		else {
-			printk(KERN_INFO
-			    "sn_console: console proceeding in polled mode\n");
-		}
-	}
-}
-
-/*
- * Kernel console definitions
- */
-
-static void sn_sal_console_write(struct console *, const char *, unsigned);
-static int sn_sal_console_setup(struct console *, char *);
-static struct uart_driver sal_console_uart;
-extern struct tty_driver *uart_console_device(struct console *, int *);
-
-static struct console sal_console = {
-	.name = DEVICE_NAME,
-	.write = sn_sal_console_write,
-	.device = uart_console_device,
-	.setup = sn_sal_console_setup,
-	.index = -1,		/* unspecified */
-	.data = &sal_console_uart,
-};
-
-#define SAL_CONSOLE	&sal_console
-
-static struct uart_driver sal_console_uart = {
-	.owner = THIS_MODULE,
-	.driver_name = "sn_console",
-	.dev_name = DEVICE_NAME,
-	.major = 0,		/* major/minor set at registration time per USE_DYNAMIC_MINOR */
-	.minor = 0,
-	.nr = 1,		/* one port */
-	.cons = SAL_CONSOLE,
-};
-
-/**
- * sn_sal_init - When the kernel loads us, get us rolling w/ serial core
- *
- * Before this is called, we've been printing kernel messages in a special
- * early mode not making use of the serial core infrastructure.  When our
- * driver is loaded for real, we register the driver and port with serial
- * core and try to enable interrupt driven mode.
- *
- */
-static int __init sn_sal_init(void)
-{
-	int retval;
-
-	if (!ia64_platform_is("sn2"))
-		return 0;
-
-	printk(KERN_INFO "sn_console: Console driver init\n");
-
-	if (USE_DYNAMIC_MINOR == 1) {
-		misc.minor = MISC_DYNAMIC_MINOR;
-		misc.name = DEVICE_NAME_DYNAMIC;
-		retval = misc_register(&misc);
-		if (retval != 0) {
-			printk(KERN_WARNING "Failed to register console "
-			       "device using misc_register.\n");
-			return -ENODEV;
-		}
-		sal_console_uart.major = MISC_MAJOR;
-		sal_console_uart.minor = misc.minor;
-	} else {
-		sal_console_uart.major = DEVICE_MAJOR;
-		sal_console_uart.minor = DEVICE_MINOR;
-	}
-
-	/* We register the driver and the port before switching to interrupts
-	 * or async above so the proper uart structures are populated */
-
-	if (uart_register_driver(&sal_console_uart) < 0) {
-		printk
-		    ("ERROR sn_sal_init failed uart_register_driver, line %d\n",
-		     __LINE__);
-		return -ENODEV;
-	}
-
-	spin_lock_init(&sal_console_port.sc_port.lock);
-
-	/* Setup the port struct with the minimum needed */
-	sal_console_port.sc_port.membase = (char *)1;	/* just needs to be non-zero */
-	sal_console_port.sc_port.type = PORT_16550A;
-	sal_console_port.sc_port.fifosize = SN_SAL_MAX_CHARS;
-	sal_console_port.sc_port.ops = &sn_console_ops;
-	sal_console_port.sc_port.line = 0;
-
-	if (uart_add_one_port(&sal_console_uart, &sal_console_port.sc_port) < 0) {
-		/* error - not sure what I'd do - so I'll do nothing */
-		printk(KERN_ERR "%s: unable to add port\n", __func__);
-	}
-
-	/* when this driver is compiled in, the console initialization
-	 * will have already switched us into asynchronous operation
-	 * before we get here through the initcalls */
-	if (!sal_console_port.sc_is_asynch) {
-		sn_sal_switch_to_asynch(&sal_console_port);
-	}
-
-	/* at this point (device_init) we can try to turn on interrupts */
-	if (!IS_RUNNING_ON_SIMULATOR()) {
-		sn_sal_switch_to_interrupts(&sal_console_port);
-	}
-	sn_process_input = 1;
-	return 0;
-}
-device_initcall(sn_sal_init);
-
-/**
- * puts_raw_fixed - sn_sal_console_write helper for adding \r's as required
- * @puts_raw : puts function to do the writing
- * @s: input string
- * @count: length
- *
- * We need a \r ahead of every \n for direct writes through
- * ia64_sn_console_putb (what sal_puts_raw below actually does).
- *
- */
-
-static void puts_raw_fixed(int (*puts_raw) (const char *s, int len),
-			   const char *s, int count)
-{
-	const char *s1;
-
-	/* Output '\r' before each '\n' */
-	while ((s1 = memchr(s, '\n', count)) != NULL) {
-		puts_raw(s, s1 - s);
-		puts_raw("\r\n", 2);
-		count -= s1 + 1 - s;
-		s = s1 + 1;
-	}
-	puts_raw(s, count);
-}
-
-/**
- * sn_sal_console_write - Print statements before serial core available
- * @console: Console to operate on - we ignore since we have just one
- * @s: String to send
- * @count: length
- *
- * This is referenced in the console struct.  It is used for early
- * console printing before we register with serial core and for things
- * such as kdb.  The console_lock must be held when we get here.
- *
- * This function has some code for trying to print output even if the lock
- * is held.  We try to cover the case where a lock holder could have died.
- * We don't use this special case code if we're not registered with serial
- * core yet.  After we're registered with serial core, the only time this
- * function would be used is for high level kernel output like magic sys req,
- * kdb, and printk's.
- */
-static void
-sn_sal_console_write(struct console *co, const char *s, unsigned count)
-{
-	unsigned long flags = 0;
-	struct sn_cons_port *port = &sal_console_port;
-	static int stole_lock = 0;
-
-	BUG_ON(!port->sc_is_asynch);
-
-	/* We can't look at the xmit buffer if we're not registered with serial core
-	 *  yet.  So only do the fancy recovery after registering
-	 */
-	if (!port->sc_port.state) {
-		/* Not yet registered with serial core - simple case */
-		puts_raw_fixed(port->sc_ops->sal_puts_raw, s, count);
-		return;
-	}
-
-	/* somebody really wants this output, might be an
-	 * oops, kdb, panic, etc.  make sure they get it. */
-	if (!spin_trylock_irqsave(&port->sc_port.lock, flags)) {
-		int lhead = port->sc_port.state->xmit.head;
-		int ltail = port->sc_port.state->xmit.tail;
-		int counter, got_lock = 0;
-
-		/*
-		 * We attempt to determine if someone has died with the
-		 * lock. We wait ~20 secs after the head and tail ptrs
-		 * stop moving and assume the lock holder is not functional
-		 * and plow ahead. If the lock is freed within the time out
-		 * period we re-get the lock and go ahead normally. We also
-		 * remember if we have plowed ahead so that we don't have
-		 * to wait out the time out period again - the asumption
-		 * is that we will time out again.
-		 */
-
-		for (counter = 0; counter < 150; mdelay(125), counter++) {
-			if (stole_lock)
-				break;
-
-			if (spin_trylock_irqsave(&port->sc_port.lock, flags)) {
-				got_lock = 1;
-				break;
-			} else {
-				/* still locked */
-				if ((lhead != port->sc_port.state->xmit.head)
-				    || (ltail !=
-					port->sc_port.state->xmit.tail)) {
-					lhead =
-						port->sc_port.state->xmit.head;
-					ltail =
-						port->sc_port.state->xmit.tail;
-					counter = 0;
-				}
-			}
-		}
-		/* flush anything in the serial core xmit buffer, raw */
-		sn_transmit_chars(port, 1);
-		if (got_lock) {
-			spin_unlock_irqrestore(&port->sc_port.lock, flags);
-			stole_lock = 0;
-		} else {
-			/* fell thru */
-			stole_lock = 1;
-		}
-		puts_raw_fixed(port->sc_ops->sal_puts_raw, s, count);
-	} else {
-		stole_lock = 0;
-		sn_transmit_chars(port, 1);
-		spin_unlock_irqrestore(&port->sc_port.lock, flags);
-
-		puts_raw_fixed(port->sc_ops->sal_puts_raw, s, count);
-	}
-}
-
-
-/**
- * sn_sal_console_setup - Set up console for early printing
- * @co: Console to work with
- * @options: Options to set
- *
- * Altix console doesn't do anything with baud rates, etc, anyway.
- *
- * This isn't required since not providing the setup function in the
- * console struct is ok.  However, other patches like KDB plop something
- * here so providing it is easier.
- *
- */
-static int sn_sal_console_setup(struct console *co, char *options)
-{
-	return 0;
-}
-
-/**
- * sn_sal_console_write_early - simple early output routine
- * @co - console struct
- * @s - string to print
- * @count - count
- *
- * Simple function to provide early output, before even
- * sn_sal_serial_console_init is called.  Referenced in the
- * console struct registerd in sn_serial_console_early_setup.
- *
- */
-static void __init
-sn_sal_console_write_early(struct console *co, const char *s, unsigned count)
-{
-	puts_raw_fixed(sal_console_port.sc_ops->sal_puts_raw, s, count);
-}
-
-/* Used for very early console printing - again, before
- * sn_sal_serial_console_init is run */
-static struct console sal_console_early __initdata = {
-	.name = "sn_sal",
-	.write = sn_sal_console_write_early,
-	.flags = CON_PRINTBUFFER,
-	.index = -1,
-};
-
-/**
- * sn_serial_console_early_setup - Sets up early console output support
- *
- * Register a console early on...  This is for output before even
- * sn_sal_serial_cosnole_init is called.  This function is called from
- * setup.c.  This allows us to do really early polled writes. When
- * sn_sal_serial_console_init is called, this console is unregistered
- * and a new one registered.
- */
-int __init sn_serial_console_early_setup(void)
-{
-	if (!ia64_platform_is("sn2"))
-		return -1;
-
-	sal_console_port.sc_ops = &poll_ops;
-	spin_lock_init(&sal_console_port.sc_port.lock);
-	early_sn_setup();	/* Find SAL entry points */
-	register_console(&sal_console_early);
-
-	return 0;
-}
-
-/**
- * sn_sal_serial_console_init - Early console output - set up for register
- *
- * This function is called when regular console init happens.  Because we
- * support even earlier console output with sn_serial_console_early_setup
- * (called from setup.c directly), this function unregisters the really
- * early console.
- *
- * Note: Even if setup.c doesn't register sal_console_early, unregistering
- * it here doesn't hurt anything.
- *
- */
-static int __init sn_sal_serial_console_init(void)
-{
-	if (ia64_platform_is("sn2")) {
-		sn_sal_switch_to_asynch(&sal_console_port);
-		DPRINTF("sn_sal_serial_console_init : register console\n");
-		register_console(&sal_console);
-		unregister_console(&sal_console_early);
-	}
-	return 0;
-}
-
-console_initcall(sn_sal_serial_console_init);
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 07/28] tty/serial: remove the ioc4_serial driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (5 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 06/28] tty/serial: remove the sn_console driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 08/28] tty/serial: remove the ioc3_serial driver Christoph Hellwig
                   ` (19 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/configs/generic_defconfig   |    1 -
 arch/ia64/configs/gensparse_defconfig |    1 -
 drivers/tty/serial/Kconfig            |    9 -
 drivers/tty/serial/Makefile           |    1 -
 drivers/tty/serial/ioc4_serial.c      | 2955 -------------------------
 5 files changed, 2967 deletions(-)
 delete mode 100644 drivers/tty/serial/ioc4_serial.c

diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 62698ea5d3f2..8dd921dce4b5 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -94,7 +94,6 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
-CONFIG_SERIAL_SGI_IOC4=y
 # CONFIG_HW_RANDOM is not set
 CONFIG_EFI_RTC=y
 CONFIG_RAW_DRIVER=m
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index b910318f2348..6e450a4fc93e 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -83,7 +83,6 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
-CONFIG_SERIAL_SGI_IOC4=y
 CONFIG_SERIAL_SGI_IOC3=y
 # CONFIG_HW_RANDOM is not set
 CONFIG_EFI_RTC=y
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index e9930af78acc..d33bd894b9f2 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -972,15 +972,6 @@ config SERIAL_JSM
 	  To compile this driver as a module, choose M here: the
 	  module will be called jsm.
 
-config SERIAL_SGI_IOC4
-	tristate "SGI IOC4 controller serial support"
-	depends on (IA64_GENERIC || IA64_SGI_SN2) && SGI_IOC4
-	select SERIAL_CORE
-	help
-		If you have an SGI Altix with an IOC4 based Base IO card
-		and wish to use the serial ports on this card, say Y.
-		Otherwise, say N.
-
 config SERIAL_SGI_IOC3
 	tristate "SGI Altix IOC3 serial support"
 	depends on (IA64_GENERIC || IA64_SGI_SN2) && SGI_IOC3
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index caa978980a6e..df8f9a8f7651 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -52,7 +52,6 @@ obj-$(CONFIG_SERIAL_SC16IS7XX_CORE) += sc16is7xx.o
 obj-$(CONFIG_SERIAL_JSM) += jsm/
 obj-$(CONFIG_SERIAL_TXX9) += serial_txx9.o
 obj-$(CONFIG_SERIAL_VR41XX) += vr41xx_siu.o
-obj-$(CONFIG_SERIAL_SGI_IOC4) += ioc4_serial.o
 obj-$(CONFIG_SERIAL_SGI_IOC3) += ioc3_serial.o
 obj-$(CONFIG_SERIAL_ATMEL) += atmel_serial.o
 obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
deleted file mode 100644
index db5b979e5a0c..000000000000
--- a/drivers/tty/serial/ioc4_serial.c
+++ /dev/null
@@ -1,2955 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2003-2006 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-
-/*
- * This file contains a module version of the ioc4 serial driver. This
- * includes all the support functions needed (support functions, etc.)
- * and the serial driver itself.
- */
-#include <linux/errno.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-#include <linux/circ_buf.h>
-#include <linux/serial_reg.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/ioc4.h>
-#include <linux/serial_core.h>
-#include <linux/slab.h>
-
-/*
- * interesting things about the ioc4
- */
-
-#define IOC4_NUM_SERIAL_PORTS	4	/* max ports per card */
-#define IOC4_NUM_CARDS		8	/* max cards per partition */
-
-#define	GET_SIO_IR(_n)	(_n == 0) ? (IOC4_SIO_IR_S0) : \
-				(_n == 1) ? (IOC4_SIO_IR_S1) : \
-				(_n == 2) ? (IOC4_SIO_IR_S2) : \
-				(IOC4_SIO_IR_S3)
-
-#define	GET_OTHER_IR(_n)  (_n == 0) ? (IOC4_OTHER_IR_S0_MEMERR) : \
-				(_n == 1) ? (IOC4_OTHER_IR_S1_MEMERR) : \
-				(_n == 2) ? (IOC4_OTHER_IR_S2_MEMERR) : \
-				(IOC4_OTHER_IR_S3_MEMERR)
-
-
-/*
- * All IOC4 registers are 32 bits wide.
- */
-
-/*
- * PCI Memory Space Map
- */
-#define IOC4_PCI_ERR_ADDR_L     0x000	/* Low Error Address */
-#define IOC4_PCI_ERR_ADDR_VLD	        (0x1 << 0)
-#define IOC4_PCI_ERR_ADDR_MST_ID_MSK    (0xf << 1)
-#define IOC4_PCI_ERR_ADDR_MST_NUM_MSK   (0xe << 1)
-#define IOC4_PCI_ERR_ADDR_MST_TYP_MSK   (0x1 << 1)
-#define IOC4_PCI_ERR_ADDR_MUL_ERR       (0x1 << 5)
-#define IOC4_PCI_ERR_ADDR_ADDR_MSK      (0x3ffffff << 6)
-
-/* Interrupt types */
-#define	IOC4_SIO_INTR_TYPE	0
-#define	IOC4_OTHER_INTR_TYPE	1
-#define	IOC4_NUM_INTR_TYPES	2
-
-/* Bitmasks for IOC4_SIO_IR, IOC4_SIO_IEC, and IOC4_SIO_IES  */
-#define IOC4_SIO_IR_S0_TX_MT	   0x00000001	/* Serial port 0 TX empty */
-#define IOC4_SIO_IR_S0_RX_FULL	   0x00000002	/* Port 0 RX buf full */
-#define IOC4_SIO_IR_S0_RX_HIGH	   0x00000004	/* Port 0 RX hiwat */
-#define IOC4_SIO_IR_S0_RX_TIMER	   0x00000008	/* Port 0 RX timeout */
-#define IOC4_SIO_IR_S0_DELTA_DCD   0x00000010	/* Port 0 delta DCD */
-#define IOC4_SIO_IR_S0_DELTA_CTS   0x00000020	/* Port 0 delta CTS */
-#define IOC4_SIO_IR_S0_INT	   0x00000040	/* Port 0 pass-thru intr */
-#define IOC4_SIO_IR_S0_TX_EXPLICIT 0x00000080	/* Port 0 explicit TX thru */
-#define IOC4_SIO_IR_S1_TX_MT	   0x00000100	/* Serial port 1 */
-#define IOC4_SIO_IR_S1_RX_FULL	   0x00000200	/* */
-#define IOC4_SIO_IR_S1_RX_HIGH	   0x00000400	/* */
-#define IOC4_SIO_IR_S1_RX_TIMER	   0x00000800	/* */
-#define IOC4_SIO_IR_S1_DELTA_DCD   0x00001000	/* */
-#define IOC4_SIO_IR_S1_DELTA_CTS   0x00002000	/* */
-#define IOC4_SIO_IR_S1_INT	   0x00004000	/* */
-#define IOC4_SIO_IR_S1_TX_EXPLICIT 0x00008000	/* */
-#define IOC4_SIO_IR_S2_TX_MT	   0x00010000	/* Serial port 2 */
-#define IOC4_SIO_IR_S2_RX_FULL	   0x00020000	/* */
-#define IOC4_SIO_IR_S2_RX_HIGH	   0x00040000	/* */
-#define IOC4_SIO_IR_S2_RX_TIMER	   0x00080000	/* */
-#define IOC4_SIO_IR_S2_DELTA_DCD   0x00100000	/* */
-#define IOC4_SIO_IR_S2_DELTA_CTS   0x00200000	/* */
-#define IOC4_SIO_IR_S2_INT	   0x00400000	/* */
-#define IOC4_SIO_IR_S2_TX_EXPLICIT 0x00800000	/* */
-#define IOC4_SIO_IR_S3_TX_MT	   0x01000000	/* Serial port 3 */
-#define IOC4_SIO_IR_S3_RX_FULL	   0x02000000	/* */
-#define IOC4_SIO_IR_S3_RX_HIGH	   0x04000000	/* */
-#define IOC4_SIO_IR_S3_RX_TIMER	   0x08000000	/* */
-#define IOC4_SIO_IR_S3_DELTA_DCD   0x10000000	/* */
-#define IOC4_SIO_IR_S3_DELTA_CTS   0x20000000	/* */
-#define IOC4_SIO_IR_S3_INT	   0x40000000	/* */
-#define IOC4_SIO_IR_S3_TX_EXPLICIT 0x80000000	/* */
-
-/* Per device interrupt masks */
-#define IOC4_SIO_IR_S0		(IOC4_SIO_IR_S0_TX_MT | \
-				 IOC4_SIO_IR_S0_RX_FULL | \
-				 IOC4_SIO_IR_S0_RX_HIGH | \
-				 IOC4_SIO_IR_S0_RX_TIMER | \
-				 IOC4_SIO_IR_S0_DELTA_DCD | \
-				 IOC4_SIO_IR_S0_DELTA_CTS | \
-				 IOC4_SIO_IR_S0_INT | \
-				 IOC4_SIO_IR_S0_TX_EXPLICIT)
-#define IOC4_SIO_IR_S1		(IOC4_SIO_IR_S1_TX_MT | \
-				 IOC4_SIO_IR_S1_RX_FULL | \
-				 IOC4_SIO_IR_S1_RX_HIGH | \
-				 IOC4_SIO_IR_S1_RX_TIMER | \
-				 IOC4_SIO_IR_S1_DELTA_DCD | \
-				 IOC4_SIO_IR_S1_DELTA_CTS | \
-				 IOC4_SIO_IR_S1_INT | \
-				 IOC4_SIO_IR_S1_TX_EXPLICIT)
-#define IOC4_SIO_IR_S2		(IOC4_SIO_IR_S2_TX_MT | \
-				 IOC4_SIO_IR_S2_RX_FULL | \
-				 IOC4_SIO_IR_S2_RX_HIGH | \
-				 IOC4_SIO_IR_S2_RX_TIMER | \
-				 IOC4_SIO_IR_S2_DELTA_DCD | \
-				 IOC4_SIO_IR_S2_DELTA_CTS | \
-				 IOC4_SIO_IR_S2_INT | \
-				 IOC4_SIO_IR_S2_TX_EXPLICIT)
-#define IOC4_SIO_IR_S3		(IOC4_SIO_IR_S3_TX_MT | \
-				 IOC4_SIO_IR_S3_RX_FULL | \
-				 IOC4_SIO_IR_S3_RX_HIGH | \
-				 IOC4_SIO_IR_S3_RX_TIMER | \
-				 IOC4_SIO_IR_S3_DELTA_DCD | \
-				 IOC4_SIO_IR_S3_DELTA_CTS | \
-				 IOC4_SIO_IR_S3_INT | \
-				 IOC4_SIO_IR_S3_TX_EXPLICIT)
-
-/* Bitmasks for IOC4_OTHER_IR, IOC4_OTHER_IEC, and IOC4_OTHER_IES  */
-#define IOC4_OTHER_IR_ATA_INT		0x00000001  /* ATAPI intr pass-thru */
-#define IOC4_OTHER_IR_ATA_MEMERR	0x00000002  /* ATAPI DMA PCI error */
-#define IOC4_OTHER_IR_S0_MEMERR		0x00000004  /* Port 0 PCI error */
-#define IOC4_OTHER_IR_S1_MEMERR		0x00000008  /* Port 1 PCI error */
-#define IOC4_OTHER_IR_S2_MEMERR		0x00000010  /* Port 2 PCI error */
-#define IOC4_OTHER_IR_S3_MEMERR		0x00000020  /* Port 3 PCI error */
-#define IOC4_OTHER_IR_KBD_INT		0x00000040  /* Keyboard/mouse */
-#define IOC4_OTHER_IR_RESERVED		0x007fff80  /* Reserved */
-#define IOC4_OTHER_IR_RT_INT		0x00800000  /* INT_OUT section output */
-#define IOC4_OTHER_IR_GEN_INT		0xff000000  /* Generic pins */
-
-#define IOC4_OTHER_IR_SER_MEMERR (IOC4_OTHER_IR_S0_MEMERR | IOC4_OTHER_IR_S1_MEMERR | \
-				  IOC4_OTHER_IR_S2_MEMERR | IOC4_OTHER_IR_S3_MEMERR)
-
-/* Bitmasks for IOC4_SIO_CR */
-#define IOC4_SIO_CR_CMD_PULSE_SHIFT              0  /* byte bus strobe shift */
-#define IOC4_SIO_CR_ARB_DIAG_TX0	0x00000000
-#define IOC4_SIO_CR_ARB_DIAG_RX0	0x00000010
-#define IOC4_SIO_CR_ARB_DIAG_TX1	0x00000020
-#define IOC4_SIO_CR_ARB_DIAG_RX1	0x00000030
-#define IOC4_SIO_CR_ARB_DIAG_TX2	0x00000040
-#define IOC4_SIO_CR_ARB_DIAG_RX2	0x00000050
-#define IOC4_SIO_CR_ARB_DIAG_TX3	0x00000060
-#define IOC4_SIO_CR_ARB_DIAG_RX3	0x00000070
-#define IOC4_SIO_CR_SIO_DIAG_IDLE	0x00000080  /* 0 -> active request among
-							   serial ports (ro) */
-/* Defs for some of the generic I/O pins */
-#define IOC4_GPCR_UART0_MODESEL	   0x10	/* Pin is output to port 0
-						   mode sel */
-#define IOC4_GPCR_UART1_MODESEL	   0x20	/* Pin is output to port 1
-						   mode sel */
-#define IOC4_GPCR_UART2_MODESEL	   0x40	/* Pin is output to port 2
-						   mode sel */
-#define IOC4_GPCR_UART3_MODESEL	   0x80	/* Pin is output to port 3
-						   mode sel */
-
-#define IOC4_GPPR_UART0_MODESEL_PIN   4	/* GIO pin controlling
-					   uart 0 mode select */
-#define IOC4_GPPR_UART1_MODESEL_PIN   5	/* GIO pin controlling
-					   uart 1 mode select */
-#define IOC4_GPPR_UART2_MODESEL_PIN   6	/* GIO pin controlling
-					   uart 2 mode select */
-#define IOC4_GPPR_UART3_MODESEL_PIN   7	/* GIO pin controlling
-					   uart 3 mode select */
-
-/* Bitmasks for serial RX status byte */
-#define IOC4_RXSB_OVERRUN       0x01	/* Char(s) lost */
-#define IOC4_RXSB_PAR_ERR	0x02	/* Parity error */
-#define IOC4_RXSB_FRAME_ERR	0x04	/* Framing error */
-#define IOC4_RXSB_BREAK	        0x08	/* Break character */
-#define IOC4_RXSB_CTS	        0x10	/* State of CTS */
-#define IOC4_RXSB_DCD	        0x20	/* State of DCD */
-#define IOC4_RXSB_MODEM_VALID   0x40	/* DCD, CTS, and OVERRUN are valid */
-#define IOC4_RXSB_DATA_VALID    0x80	/* Data byte, FRAME_ERR PAR_ERR
-					 * & BREAK valid */
-
-/* Bitmasks for serial TX control byte */
-#define IOC4_TXCB_INT_WHEN_DONE 0x20	/* Interrupt after this byte is sent */
-#define IOC4_TXCB_INVALID	0x00	/* Byte is invalid */
-#define IOC4_TXCB_VALID	        0x40	/* Byte is valid */
-#define IOC4_TXCB_MCR	        0x80	/* Data<7:0> to modem control reg */
-#define IOC4_TXCB_DELAY	        0xc0	/* Delay data<7:0> mSec */
-
-/* Bitmasks for IOC4_SBBR_L */
-#define IOC4_SBBR_L_SIZE	0x00000001  /* 0 == 1KB rings, 1 == 4KB rings */
-
-/* Bitmasks for IOC4_SSCR_<3:0> */
-#define IOC4_SSCR_RX_THRESHOLD  0x000001ff  /* Hiwater mark */
-#define IOC4_SSCR_TX_TIMER_BUSY 0x00010000  /* TX timer in progress */
-#define IOC4_SSCR_HFC_EN	0x00020000  /* Hardware flow control enabled */
-#define IOC4_SSCR_RX_RING_DCD   0x00040000  /* Post RX record on delta-DCD */
-#define IOC4_SSCR_RX_RING_CTS   0x00080000  /* Post RX record on delta-CTS */
-#define IOC4_SSCR_DIAG	        0x00200000  /* Bypass clock divider for sim */
-#define IOC4_SSCR_RX_DRAIN	0x08000000  /* Drain RX buffer to memory */
-#define IOC4_SSCR_DMA_EN	0x10000000  /* Enable ring buffer DMA */
-#define IOC4_SSCR_DMA_PAUSE	0x20000000  /* Pause DMA */
-#define IOC4_SSCR_PAUSE_STATE   0x40000000  /* Sets when PAUSE takes effect */
-#define IOC4_SSCR_RESET	        0x80000000  /* Reset DMA channels */
-
-/* All producer/consumer pointers are the same bitfield */
-#define IOC4_PROD_CONS_PTR_4K   0x00000ff8	/* For 4K buffers */
-#define IOC4_PROD_CONS_PTR_1K   0x000003f8	/* For 1K buffers */
-#define IOC4_PROD_CONS_PTR_OFF           3
-
-/* Bitmasks for IOC4_SRCIR_<3:0> */
-#define IOC4_SRCIR_ARM	        0x80000000	/* Arm RX timer */
-
-/* Bitmasks for IOC4_SHADOW_<3:0> */
-#define IOC4_SHADOW_DR	 0x00000001	/* Data ready */
-#define IOC4_SHADOW_OE	 0x00000002	/* Overrun error */
-#define IOC4_SHADOW_PE	 0x00000004	/* Parity error */
-#define IOC4_SHADOW_FE	 0x00000008	/* Framing error */
-#define IOC4_SHADOW_BI	 0x00000010	/* Break interrupt */
-#define IOC4_SHADOW_THRE 0x00000020	/* Xmit holding register empty */
-#define IOC4_SHADOW_TEMT 0x00000040	/* Xmit shift register empty */
-#define IOC4_SHADOW_RFCE 0x00000080	/* Char in RX fifo has an error */
-#define IOC4_SHADOW_DCTS 0x00010000	/* Delta clear to send */
-#define IOC4_SHADOW_DDCD 0x00080000	/* Delta data carrier detect */
-#define IOC4_SHADOW_CTS	 0x00100000	/* Clear to send */
-#define IOC4_SHADOW_DCD	 0x00800000	/* Data carrier detect */
-#define IOC4_SHADOW_DTR	 0x01000000	/* Data terminal ready */
-#define IOC4_SHADOW_RTS	 0x02000000	/* Request to send */
-#define IOC4_SHADOW_OUT1 0x04000000	/* 16550 OUT1 bit */
-#define IOC4_SHADOW_OUT2 0x08000000	/* 16550 OUT2 bit */
-#define IOC4_SHADOW_LOOP 0x10000000	/* Loopback enabled */
-
-/* Bitmasks for IOC4_SRTR_<3:0> */
-#define IOC4_SRTR_CNT	        0x00000fff	/* Reload value for RX timer */
-#define IOC4_SRTR_CNT_VAL	0x0fff0000	/* Current value of RX timer */
-#define IOC4_SRTR_CNT_VAL_SHIFT         16
-#define IOC4_SRTR_HZ                 16000	/* SRTR clock frequency */
-
-/* Serial port register map used for DMA and PIO serial I/O */
-struct ioc4_serialregs {
-	uint32_t sscr;
-	uint32_t stpir;
-	uint32_t stcir;
-	uint32_t srpir;
-	uint32_t srcir;
-	uint32_t srtr;
-	uint32_t shadow;
-};
-
-/* IOC4 UART register map */
-struct ioc4_uartregs {
-	char i4u_lcr;
-	union {
-		char iir;	/* read only */
-		char fcr;	/* write only */
-	} u3;
-	union {
-		char ier;	/* DLAB == 0 */
-		char dlm;	/* DLAB == 1 */
-	} u2;
-	union {
-		char rbr;	/* read only, DLAB == 0 */
-		char thr;	/* write only, DLAB == 0 */
-		char dll;	/* DLAB == 1 */
-	} u1;
-	char i4u_scr;
-	char i4u_msr;
-	char i4u_lsr;
-	char i4u_mcr;
-};
-
-/* short names */
-#define i4u_dll u1.dll
-#define i4u_ier u2.ier
-#define i4u_dlm u2.dlm
-#define i4u_fcr u3.fcr
-
-/* Serial port registers used for DMA serial I/O */
-struct ioc4_serial {
-	uint32_t sbbr01_l;
-	uint32_t sbbr01_h;
-	uint32_t sbbr23_l;
-	uint32_t sbbr23_h;
-
-	struct ioc4_serialregs port_0;
-	struct ioc4_serialregs port_1;
-	struct ioc4_serialregs port_2;
-	struct ioc4_serialregs port_3;
-	struct ioc4_uartregs uart_0;
-	struct ioc4_uartregs uart_1;
-	struct ioc4_uartregs uart_2;
-	struct ioc4_uartregs uart_3;
-};
-
-/* UART clock speed */
-#define IOC4_SER_XIN_CLK_66     66666667
-#define IOC4_SER_XIN_CLK_33     33333333
-
-#define IOC4_W_IES		0
-#define IOC4_W_IEC		1
-
-typedef void ioc4_intr_func_f(void *, uint32_t);
-typedef ioc4_intr_func_f *ioc4_intr_func_t;
-
-static unsigned int Num_of_ioc4_cards;
-
-/* defining this will get you LOTS of great debug info */
-//#define DEBUG_INTERRUPTS
-#define DPRINT_CONFIG(_x...)	;
-//#define DPRINT_CONFIG(_x...)	printk _x
-
-/* number of characters left in xmit buffer before we ask for more */
-#define WAKEUP_CHARS	256
-
-/* number of characters we want to transmit to the lower level at a time */
-#define IOC4_MAX_CHARS	256
-#define IOC4_FIFO_CHARS	255
-
-/* Device name we're using */
-#define DEVICE_NAME_RS232  "ttyIOC"
-#define DEVICE_NAME_RS422  "ttyAIOC"
-#define DEVICE_MAJOR	   204
-#define DEVICE_MINOR_RS232 50
-#define DEVICE_MINOR_RS422 84
-
-
-/* register offsets */
-#define IOC4_SERIAL_OFFSET	0x300
-
-/* flags for next_char_state */
-#define NCS_BREAK	0x1
-#define NCS_PARITY	0x2
-#define NCS_FRAMING	0x4
-#define NCS_OVERRUN	0x8
-
-/* cause we need SOME parameters ... */
-#define MIN_BAUD_SUPPORTED	1200
-#define MAX_BAUD_SUPPORTED	115200
-
-/* protocol types supported */
-#define PROTO_RS232	3
-#define PROTO_RS422	7
-
-/* Notification types */
-#define N_DATA_READY	0x01
-#define N_OUTPUT_LOWAT	0x02
-#define N_BREAK		0x04
-#define N_PARITY_ERROR	0x08
-#define N_FRAMING_ERROR	0x10
-#define N_OVERRUN_ERROR	0x20
-#define N_DDCD		0x40
-#define N_DCTS		0x80
-
-#define N_ALL_INPUT	(N_DATA_READY | N_BREAK |			\
-			 N_PARITY_ERROR | N_FRAMING_ERROR |		\
-			 N_OVERRUN_ERROR | N_DDCD | N_DCTS)
-
-#define N_ALL_OUTPUT	N_OUTPUT_LOWAT
-
-#define N_ALL_ERRORS	(N_PARITY_ERROR | N_FRAMING_ERROR | N_OVERRUN_ERROR)
-
-#define N_ALL		(N_DATA_READY | N_OUTPUT_LOWAT | N_BREAK |	\
-			 N_PARITY_ERROR | N_FRAMING_ERROR |		\
-			 N_OVERRUN_ERROR | N_DDCD | N_DCTS)
-
-#define SER_DIVISOR(_x, clk)		(((clk) + (_x) * 8) / ((_x) * 16))
-#define DIVISOR_TO_BAUD(div, clk)	((clk) / 16 / (div))
-
-/* Some masks */
-#define LCR_MASK_BITS_CHAR	(UART_LCR_WLEN5 | UART_LCR_WLEN6 \
-					| UART_LCR_WLEN7 | UART_LCR_WLEN8)
-#define LCR_MASK_STOP_BITS	(UART_LCR_STOP)
-
-#define PENDING(_p)	(readl(&(_p)->ip_mem->sio_ir.raw) & _p->ip_ienb)
-#define READ_SIO_IR(_p) readl(&(_p)->ip_mem->sio_ir.raw)
-
-/* Default to 4k buffers */
-#ifdef IOC4_1K_BUFFERS
-#define RING_BUF_SIZE 1024
-#define IOC4_BUF_SIZE_BIT 0
-#define PROD_CONS_MASK IOC4_PROD_CONS_PTR_1K
-#else
-#define RING_BUF_SIZE 4096
-#define IOC4_BUF_SIZE_BIT IOC4_SBBR_L_SIZE
-#define PROD_CONS_MASK IOC4_PROD_CONS_PTR_4K
-#endif
-
-#define TOTAL_RING_BUF_SIZE (RING_BUF_SIZE * 4)
-
-/*
- * This is the entry saved by the driver - one per card
- */
-
-#define UART_PORT_MIN		0
-#define UART_PORT_RS232		UART_PORT_MIN
-#define UART_PORT_RS422		1
-#define UART_PORT_COUNT		2	/* one for each mode */
-
-struct ioc4_control {
-	int ic_irq;
-	struct {
-		/* uart ports are allocated here - 1 for rs232, 1 for rs422 */
-		struct uart_port icp_uart_port[UART_PORT_COUNT];
-		/* Handy reference material */
-		struct ioc4_port *icp_port;
-	} ic_port[IOC4_NUM_SERIAL_PORTS];
-	struct ioc4_soft *ic_soft;
-};
-
-/*
- * per-IOC4 data structure
- */
-#define MAX_IOC4_INTR_ENTS	(8 * sizeof(uint32_t))
-struct ioc4_soft {
-	struct ioc4_misc_regs __iomem *is_ioc4_misc_addr;
-	struct ioc4_serial __iomem *is_ioc4_serial_addr;
-
-	/* Each interrupt type has an entry in the array */
-	struct ioc4_intr_type {
-
-		/*
-		 * Each in-use entry in this array contains at least
-		 * one nonzero bit in sd_bits; no two entries in this
-		 * array have overlapping sd_bits values.
-		 */
-		struct ioc4_intr_info {
-			uint32_t sd_bits;
-			ioc4_intr_func_f *sd_intr;
-			void *sd_info;
-		} is_intr_info[MAX_IOC4_INTR_ENTS];
-
-		/* Number of entries active in the above array */
-		atomic_t is_num_intrs;
-	} is_intr_type[IOC4_NUM_INTR_TYPES];
-
-	/* is_ir_lock must be held while
-	 * modifying sio_ie values, so
-	 * we can be sure that sio_ie is
-	 * not changing when we read it
-	 * along with sio_ir.
-	 */
-	spinlock_t is_ir_lock;	/* SIO_IE[SC] mod lock */
-};
-
-/* Local port info for each IOC4 serial ports */
-struct ioc4_port {
-	struct uart_port *ip_port;	/* current active port ptr */
-	/* Ptrs for all ports */
-	struct uart_port *ip_all_ports[UART_PORT_COUNT];
-	/* Back ptrs for this port */
-	struct ioc4_control *ip_control;
-	struct pci_dev *ip_pdev;
-	struct ioc4_soft *ip_ioc4_soft;
-
-	/* pci mem addresses */
-	struct ioc4_misc_regs __iomem *ip_mem;
-	struct ioc4_serial __iomem *ip_serial;
-	struct ioc4_serialregs __iomem *ip_serial_regs;
-	struct ioc4_uartregs __iomem *ip_uart_regs;
-
-	/* Ring buffer page for this port */
-	dma_addr_t ip_dma_ringbuf;
-	/* vaddr of ring buffer */
-	struct ring_buffer *ip_cpu_ringbuf;
-
-	/* Rings for this port */
-	struct ring *ip_inring;
-	struct ring *ip_outring;
-
-	/* Hook to port specific values */
-	struct hooks *ip_hooks;
-
-	spinlock_t ip_lock;
-
-	/* Various rx/tx parameters */
-	int ip_baud;
-	int ip_tx_lowat;
-	int ip_rx_timeout;
-
-	/* Copy of notification bits */
-	int ip_notify;
-
-	/* Shadow copies of various registers so we don't need to PIO
-	 * read them constantly
-	 */
-	uint32_t ip_ienb;	/* Enabled interrupts */
-	uint32_t ip_sscr;
-	uint32_t ip_tx_prod;
-	uint32_t ip_rx_cons;
-	int ip_pci_bus_speed;
-	unsigned char ip_flags;
-};
-
-/* tx low water mark.  We need to notify the driver whenever tx is getting
- * close to empty so it can refill the tx buffer and keep things going.
- * Let's assume that if we interrupt 1 ms before the tx goes idle, we'll
- * have no trouble getting in more chars in time (I certainly hope so).
- */
-#define TX_LOWAT_LATENCY      1000
-#define TX_LOWAT_HZ          (1000000 / TX_LOWAT_LATENCY)
-#define TX_LOWAT_CHARS(baud) (baud / 10 / TX_LOWAT_HZ)
-
-/* Flags per port */
-#define INPUT_HIGH	0x01
-#define DCD_ON		0x02
-#define LOWAT_WRITTEN	0x04
-#define READ_ABORTED	0x08
-#define PORT_ACTIVE	0x10
-#define PORT_INACTIVE	0	/* This is the value when "off" */
-
-
-/* Since each port has different register offsets and bitmasks
- * for everything, we'll store those that we need in tables so we
- * don't have to be constantly checking the port we are dealing with.
- */
-struct hooks {
-	uint32_t intr_delta_dcd;
-	uint32_t intr_delta_cts;
-	uint32_t intr_tx_mt;
-	uint32_t intr_rx_timer;
-	uint32_t intr_rx_high;
-	uint32_t intr_tx_explicit;
-	uint32_t intr_dma_error;
-	uint32_t intr_clear;
-	uint32_t intr_all;
-	int rs422_select_pin;
-};
-
-static struct hooks hooks_array[IOC4_NUM_SERIAL_PORTS] = {
-	/* Values for port 0 */
-	{
-	 IOC4_SIO_IR_S0_DELTA_DCD, IOC4_SIO_IR_S0_DELTA_CTS,
-	 IOC4_SIO_IR_S0_TX_MT, IOC4_SIO_IR_S0_RX_TIMER,
-	 IOC4_SIO_IR_S0_RX_HIGH, IOC4_SIO_IR_S0_TX_EXPLICIT,
-	 IOC4_OTHER_IR_S0_MEMERR,
-	 (IOC4_SIO_IR_S0_TX_MT | IOC4_SIO_IR_S0_RX_FULL |
-	  IOC4_SIO_IR_S0_RX_HIGH | IOC4_SIO_IR_S0_RX_TIMER |
-	  IOC4_SIO_IR_S0_DELTA_DCD | IOC4_SIO_IR_S0_DELTA_CTS |
-	  IOC4_SIO_IR_S0_INT | IOC4_SIO_IR_S0_TX_EXPLICIT),
-	 IOC4_SIO_IR_S0, IOC4_GPPR_UART0_MODESEL_PIN,
-	 },
-
-	/* Values for port 1 */
-	{
-	 IOC4_SIO_IR_S1_DELTA_DCD, IOC4_SIO_IR_S1_DELTA_CTS,
-	 IOC4_SIO_IR_S1_TX_MT, IOC4_SIO_IR_S1_RX_TIMER,
-	 IOC4_SIO_IR_S1_RX_HIGH, IOC4_SIO_IR_S1_TX_EXPLICIT,
-	 IOC4_OTHER_IR_S1_MEMERR,
-	 (IOC4_SIO_IR_S1_TX_MT | IOC4_SIO_IR_S1_RX_FULL |
-	  IOC4_SIO_IR_S1_RX_HIGH | IOC4_SIO_IR_S1_RX_TIMER |
-	  IOC4_SIO_IR_S1_DELTA_DCD | IOC4_SIO_IR_S1_DELTA_CTS |
-	  IOC4_SIO_IR_S1_INT | IOC4_SIO_IR_S1_TX_EXPLICIT),
-	 IOC4_SIO_IR_S1, IOC4_GPPR_UART1_MODESEL_PIN,
-	 },
-
-	/* Values for port 2 */
-	{
-	 IOC4_SIO_IR_S2_DELTA_DCD, IOC4_SIO_IR_S2_DELTA_CTS,
-	 IOC4_SIO_IR_S2_TX_MT, IOC4_SIO_IR_S2_RX_TIMER,
-	 IOC4_SIO_IR_S2_RX_HIGH, IOC4_SIO_IR_S2_TX_EXPLICIT,
-	 IOC4_OTHER_IR_S2_MEMERR,
-	 (IOC4_SIO_IR_S2_TX_MT | IOC4_SIO_IR_S2_RX_FULL |
-	  IOC4_SIO_IR_S2_RX_HIGH | IOC4_SIO_IR_S2_RX_TIMER |
-	  IOC4_SIO_IR_S2_DELTA_DCD | IOC4_SIO_IR_S2_DELTA_CTS |
-	  IOC4_SIO_IR_S2_INT | IOC4_SIO_IR_S2_TX_EXPLICIT),
-	 IOC4_SIO_IR_S2, IOC4_GPPR_UART2_MODESEL_PIN,
-	 },
-
-	/* Values for port 3 */
-	{
-	 IOC4_SIO_IR_S3_DELTA_DCD, IOC4_SIO_IR_S3_DELTA_CTS,
-	 IOC4_SIO_IR_S3_TX_MT, IOC4_SIO_IR_S3_RX_TIMER,
-	 IOC4_SIO_IR_S3_RX_HIGH, IOC4_SIO_IR_S3_TX_EXPLICIT,
-	 IOC4_OTHER_IR_S3_MEMERR,
-	 (IOC4_SIO_IR_S3_TX_MT | IOC4_SIO_IR_S3_RX_FULL |
-	  IOC4_SIO_IR_S3_RX_HIGH | IOC4_SIO_IR_S3_RX_TIMER |
-	  IOC4_SIO_IR_S3_DELTA_DCD | IOC4_SIO_IR_S3_DELTA_CTS |
-	  IOC4_SIO_IR_S3_INT | IOC4_SIO_IR_S3_TX_EXPLICIT),
-	 IOC4_SIO_IR_S3, IOC4_GPPR_UART3_MODESEL_PIN,
-	 }
-};
-
-/* A ring buffer entry */
-struct ring_entry {
-	union {
-		struct {
-			uint32_t alldata;
-			uint32_t allsc;
-		} all;
-		struct {
-			char data[4];	/* data bytes */
-			char sc[4];	/* status/control */
-		} s;
-	} u;
-};
-
-/* Test the valid bits in any of the 4 sc chars using "allsc" member */
-#define RING_ANY_VALID \
-	((uint32_t)(IOC4_RXSB_MODEM_VALID | IOC4_RXSB_DATA_VALID) * 0x01010101)
-
-#define ring_sc     u.s.sc
-#define ring_data   u.s.data
-#define ring_allsc  u.all.allsc
-
-/* Number of entries per ring buffer. */
-#define ENTRIES_PER_RING (RING_BUF_SIZE / (int) sizeof(struct ring_entry))
-
-/* An individual ring */
-struct ring {
-	struct ring_entry entries[ENTRIES_PER_RING];
-};
-
-/* The whole enchilada */
-struct ring_buffer {
-	struct ring TX_0_OR_2;
-	struct ring RX_0_OR_2;
-	struct ring TX_1_OR_3;
-	struct ring RX_1_OR_3;
-};
-
-/* Get a ring from a port struct */
-#define RING(_p, _wh)	&(((struct ring_buffer *)((_p)->ip_cpu_ringbuf))->_wh)
-
-/* Infinite loop detection.
- */
-#define MAXITER 10000000
-
-/* Prototypes */
-static void receive_chars(struct uart_port *);
-static void handle_intr(void *arg, uint32_t sio_ir);
-
-/*
- * port_is_active - determines if this port is currently active
- * @port: ptr to soft struct for this port
- * @uart_port: uart port to test for
- */
-static inline int port_is_active(struct ioc4_port *port,
-		struct uart_port *uart_port)
-{
-	if (port) {
-		if ((port->ip_flags & PORT_ACTIVE)
-					&& (port->ip_port == uart_port))
-			return 1;
-	}
-	return 0;
-}
-
-
-/**
- * write_ireg - write the interrupt regs
- * @ioc4_soft: ptr to soft struct for this port
- * @val: value to write
- * @which: which register
- * @type: which ireg set
- */
-static inline void
-write_ireg(struct ioc4_soft *ioc4_soft, uint32_t val, int which, int type)
-{
-	struct ioc4_misc_regs __iomem *mem = ioc4_soft->is_ioc4_misc_addr;
-	unsigned long flags;
-
-	spin_lock_irqsave(&ioc4_soft->is_ir_lock, flags);
-
-	switch (type) {
-	case IOC4_SIO_INTR_TYPE:
-		switch (which) {
-		case IOC4_W_IES:
-			writel(val, &mem->sio_ies.raw);
-			break;
-
-		case IOC4_W_IEC:
-			writel(val, &mem->sio_iec.raw);
-			break;
-		}
-		break;
-
-	case IOC4_OTHER_INTR_TYPE:
-		switch (which) {
-		case IOC4_W_IES:
-			writel(val, &mem->other_ies.raw);
-			break;
-
-		case IOC4_W_IEC:
-			writel(val, &mem->other_iec.raw);
-			break;
-		}
-		break;
-
-	default:
-		break;
-	}
-	spin_unlock_irqrestore(&ioc4_soft->is_ir_lock, flags);
-}
-
-/**
- * set_baud - Baud rate setting code
- * @port: port to set
- * @baud: baud rate to use
- */
-static int set_baud(struct ioc4_port *port, int baud)
-{
-	int actual_baud;
-	int diff;
-	int lcr;
-	unsigned short divisor;
-	struct ioc4_uartregs __iomem *uart;
-
-	divisor = SER_DIVISOR(baud, port->ip_pci_bus_speed);
-	if (!divisor)
-		return 1;
-	actual_baud = DIVISOR_TO_BAUD(divisor, port->ip_pci_bus_speed);
-
-	diff = actual_baud - baud;
-	if (diff < 0)
-		diff = -diff;
-
-	/* If we're within 1%, we've found a match */
-	if (diff * 100 > actual_baud)
-		return 1;
-
-	uart = port->ip_uart_regs;
-	lcr = readb(&uart->i4u_lcr);
-	writeb(lcr | UART_LCR_DLAB, &uart->i4u_lcr);
-	writeb((unsigned char)divisor, &uart->i4u_dll);
-	writeb((unsigned char)(divisor >> 8), &uart->i4u_dlm);
-	writeb(lcr, &uart->i4u_lcr);
-	return 0;
-}
-
-
-/**
- * get_ioc4_port - given a uart port, return the control structure
- * @port: uart port
- * @set: set this port as current
- */
-static struct ioc4_port *get_ioc4_port(struct uart_port *the_port, int set)
-{
-	struct ioc4_driver_data *idd = dev_get_drvdata(the_port->dev);
-	struct ioc4_control *control = idd->idd_serial_data;
-	struct ioc4_port *port;
-	int port_num, port_type;
-
-	if (control) {
-		for ( port_num = 0; port_num < IOC4_NUM_SERIAL_PORTS;
-							port_num++ ) {
-			port = control->ic_port[port_num].icp_port;
-			if (!port)
-				continue;
-			for (port_type = UART_PORT_MIN;
-						port_type < UART_PORT_COUNT;
-						port_type++) {
-				if (the_port == port->ip_all_ports
-							[port_type]) {
-					/* set local copy */
-					if (set) {
-						port->ip_port = the_port;
-					}
-					return port;
-				}
-			}
-		}
-	}
-	return NULL;
-}
-
-/* The IOC4 hardware provides no atomic way to determine if interrupts
- * are pending since two reads are required to do so.  The handler must
- * read the SIO_IR and the SIO_IES, and take the logical and of the
- * two.  When this value is zero, all interrupts have been serviced and
- * the handler may return.
- *
- * This has the unfortunate "hole" that, if some other CPU or
- * some other thread or some higher level interrupt manages to
- * modify SIO_IE between our reads of SIO_IR and SIO_IE, we may
- * think we have observed SIO_IR&SIO_IE==0 when in fact this
- * condition never really occurred.
- *
- * To solve this, we use a simple spinlock that must be held
- * whenever modifying SIO_IE; holding this lock while observing
- * both SIO_IR and SIO_IE guarantees that we do not falsely
- * conclude that no enabled interrupts are pending.
- */
-
-static inline uint32_t
-pending_intrs(struct ioc4_soft *soft, int type)
-{
-	struct ioc4_misc_regs __iomem *mem = soft->is_ioc4_misc_addr;
-	unsigned long flag;
-	uint32_t intrs = 0;
-
-	BUG_ON(!((type == IOC4_SIO_INTR_TYPE)
-	       || (type == IOC4_OTHER_INTR_TYPE)));
-
-	spin_lock_irqsave(&soft->is_ir_lock, flag);
-
-	switch (type) {
-	case IOC4_SIO_INTR_TYPE:
-		intrs = readl(&mem->sio_ir.raw) & readl(&mem->sio_ies.raw);
-		break;
-
-	case IOC4_OTHER_INTR_TYPE:
-		intrs = readl(&mem->other_ir.raw) & readl(&mem->other_ies.raw);
-
-		/* Don't process any ATA interrupte */
-		intrs &= ~(IOC4_OTHER_IR_ATA_INT | IOC4_OTHER_IR_ATA_MEMERR);
-		break;
-
-	default:
-		break;
-	}
-	spin_unlock_irqrestore(&soft->is_ir_lock, flag);
-	return intrs;
-}
-
-/**
- * port_init - Initialize the sio and ioc4 hardware for a given port
- *			called per port from attach...
- * @port: port to initialize
- */
-static inline int port_init(struct ioc4_port *port)
-{
-	uint32_t sio_cr;
-	struct hooks *hooks = port->ip_hooks;
-	struct ioc4_uartregs __iomem *uart;
-
-	/* Idle the IOC4 serial interface */
-	writel(IOC4_SSCR_RESET, &port->ip_serial_regs->sscr);
-
-	/* Wait until any pending bus activity for this port has ceased */
-	do
-		sio_cr = readl(&port->ip_mem->sio_cr.raw);
-	while (!(sio_cr & IOC4_SIO_CR_SIO_DIAG_IDLE));
-
-	/* Finish reset sequence */
-	writel(0, &port->ip_serial_regs->sscr);
-
-	/* Once RESET is done, reload cached tx_prod and rx_cons values
-	 * and set rings to empty by making prod == cons
-	 */
-	port->ip_tx_prod = readl(&port->ip_serial_regs->stcir) & PROD_CONS_MASK;
-	writel(port->ip_tx_prod, &port->ip_serial_regs->stpir);
-	port->ip_rx_cons = readl(&port->ip_serial_regs->srpir) & PROD_CONS_MASK;
-	writel(port->ip_rx_cons | IOC4_SRCIR_ARM, &port->ip_serial_regs->srcir);
-
-	/* Disable interrupts for this 16550 */
-	uart = port->ip_uart_regs;
-	writeb(0, &uart->i4u_lcr);
-	writeb(0, &uart->i4u_ier);
-
-	/* Set the default baud */
-	set_baud(port, port->ip_baud);
-
-	/* Set line control to 8 bits no parity */
-	writeb(UART_LCR_WLEN8 | 0, &uart->i4u_lcr);
-					/* UART_LCR_STOP == 1 stop */
-
-	/* Enable the FIFOs */
-	writeb(UART_FCR_ENABLE_FIFO, &uart->i4u_fcr);
-	/* then reset 16550 FIFOs */
-	writeb(UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
-			&uart->i4u_fcr);
-
-	/* Clear modem control register */
-	writeb(0, &uart->i4u_mcr);
-
-	/* Clear deltas in modem status register */
-	readb(&uart->i4u_msr);
-
-	/* Only do this once per port pair */
-	if (port->ip_hooks == &hooks_array[0]
-			    || port->ip_hooks == &hooks_array[2]) {
-		unsigned long ring_pci_addr;
-		uint32_t __iomem *sbbr_l;
-		uint32_t __iomem *sbbr_h;
-
-		if (port->ip_hooks == &hooks_array[0]) {
-			sbbr_l = &port->ip_serial->sbbr01_l;
-			sbbr_h = &port->ip_serial->sbbr01_h;
-		} else {
-			sbbr_l = &port->ip_serial->sbbr23_l;
-			sbbr_h = &port->ip_serial->sbbr23_h;
-		}
-
-		ring_pci_addr = (unsigned long __iomem)port->ip_dma_ringbuf;
-		DPRINT_CONFIG(("%s: ring_pci_addr 0x%lx\n",
-					__func__, ring_pci_addr));
-
-		writel((unsigned int)((uint64_t)ring_pci_addr >> 32), sbbr_h);
-		writel((unsigned int)ring_pci_addr | IOC4_BUF_SIZE_BIT, sbbr_l);
-	}
-
-	/* Set the receive timeout value to 10 msec */
-	writel(IOC4_SRTR_HZ / 100, &port->ip_serial_regs->srtr);
-
-	/* Set rx threshold, enable DMA */
-	/* Set high water mark at 3/4 of full ring */
-	port->ip_sscr = (ENTRIES_PER_RING * 3 / 4);
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-
-	/* Disable and clear all serial related interrupt bits */
-	write_ireg(port->ip_ioc4_soft, hooks->intr_clear,
-		       IOC4_W_IEC, IOC4_SIO_INTR_TYPE);
-	port->ip_ienb &= ~hooks->intr_clear;
-	writel(hooks->intr_clear, &port->ip_mem->sio_ir.raw);
-	return 0;
-}
-
-/**
- * handle_dma_error_intr - service any pending DMA error interrupts for the
- *			given port - 2nd level called via sd_intr
- * @arg: handler arg
- * @other_ir: ioc4regs
- */
-static void handle_dma_error_intr(void *arg, uint32_t other_ir)
-{
-	struct ioc4_port *port = (struct ioc4_port *)arg;
-	struct hooks *hooks = port->ip_hooks;
-	unsigned long flags;
-
-	spin_lock_irqsave(&port->ip_lock, flags);
-
-	/* ACK the interrupt */
-	writel(hooks->intr_dma_error, &port->ip_mem->other_ir.raw);
-
-	if (readl(&port->ip_mem->pci_err_addr_l.raw) & IOC4_PCI_ERR_ADDR_VLD) {
-		printk(KERN_ERR
-			"PCI error address is 0x%llx, "
-				"master is serial port %c %s\n",
-		     (((uint64_t)readl(&port->ip_mem->pci_err_addr_h)
-							 << 32)
-				| readl(&port->ip_mem->pci_err_addr_l.raw))
-					& IOC4_PCI_ERR_ADDR_ADDR_MSK, '1' +
-		     ((char)(readl(&port->ip_mem->pci_err_addr_l.raw) &
-			     IOC4_PCI_ERR_ADDR_MST_NUM_MSK) >> 1),
-		     (readl(&port->ip_mem->pci_err_addr_l.raw)
-				& IOC4_PCI_ERR_ADDR_MST_TYP_MSK)
-				? "RX" : "TX");
-
-		if (readl(&port->ip_mem->pci_err_addr_l.raw)
-						& IOC4_PCI_ERR_ADDR_MUL_ERR) {
-			printk(KERN_ERR
-				"Multiple errors occurred\n");
-		}
-	}
-	spin_unlock_irqrestore(&port->ip_lock, flags);
-
-	/* Re-enable DMA error interrupts */
-	write_ireg(port->ip_ioc4_soft, hooks->intr_dma_error, IOC4_W_IES,
-						IOC4_OTHER_INTR_TYPE);
-}
-
-/**
- * intr_connect - interrupt connect function
- * @soft: soft struct for this card
- * @type: interrupt type
- * @intrbits: bit pattern to set
- * @intr: handler function
- * @info: handler arg
- */
-static void
-intr_connect(struct ioc4_soft *soft, int type,
-		  uint32_t intrbits, ioc4_intr_func_f * intr, void *info)
-{
-	int i;
-	struct ioc4_intr_info *intr_ptr;
-
-	BUG_ON(!((type == IOC4_SIO_INTR_TYPE)
-	       || (type == IOC4_OTHER_INTR_TYPE)));
-
-	i = atomic_inc_return(&soft-> is_intr_type[type].is_num_intrs) - 1;
-	BUG_ON(!(i < MAX_IOC4_INTR_ENTS || (printk("i %d\n", i), 0)));
-
-	/* Save off the lower level interrupt handler */
-	intr_ptr = &soft->is_intr_type[type].is_intr_info[i];
-	intr_ptr->sd_bits = intrbits;
-	intr_ptr->sd_intr = intr;
-	intr_ptr->sd_info = info;
-}
-
-/**
- * ioc4_intr - Top level IOC4 interrupt handler.
- * @irq: irq value
- * @arg: handler arg
- */
-
-static irqreturn_t ioc4_intr(int irq, void *arg)
-{
-	struct ioc4_soft *soft;
-	uint32_t this_ir, this_mir;
-	int xx, num_intrs = 0;
-	int intr_type;
-	int handled = 0;
-	struct ioc4_intr_info *intr_info;
-
-	soft = arg;
-	for (intr_type = 0; intr_type < IOC4_NUM_INTR_TYPES; intr_type++) {
-		num_intrs = (int)atomic_read(
-				&soft->is_intr_type[intr_type].is_num_intrs);
-
-		this_mir = this_ir = pending_intrs(soft, intr_type);
-
-		/* Farm out the interrupt to the various drivers depending on
-		 * which interrupt bits are set.
-		 */
-		for (xx = 0; xx < num_intrs; xx++) {
-			intr_info = &soft->is_intr_type[intr_type].is_intr_info[xx];
-			this_mir = this_ir & intr_info->sd_bits;
-			if (this_mir) {
-				/* Disable owned interrupts, call handler */
-				handled++;
-				write_ireg(soft, intr_info->sd_bits, IOC4_W_IEC,
-								intr_type);
-				intr_info->sd_intr(intr_info->sd_info, this_mir);
-				this_ir &= ~this_mir;
-			}
-		}
-	}
-#ifdef DEBUG_INTERRUPTS
-	{
-		struct ioc4_misc_regs __iomem *mem = soft->is_ioc4_misc_addr;
-		unsigned long flag;
-
-		spin_lock_irqsave(&soft->is_ir_lock, flag);
-		printk ("%s : %d : mem 0x%p sio_ir 0x%x sio_ies 0x%x "
-				"other_ir 0x%x other_ies 0x%x mask 0x%x\n",
-		     __func__, __LINE__,
-		     (void *)mem, readl(&mem->sio_ir.raw),
-		     readl(&mem->sio_ies.raw),
-		     readl(&mem->other_ir.raw),
-		     readl(&mem->other_ies.raw),
-		     IOC4_OTHER_IR_ATA_INT | IOC4_OTHER_IR_ATA_MEMERR);
-		spin_unlock_irqrestore(&soft->is_ir_lock, flag);
-	}
-#endif
-	return handled ? IRQ_HANDLED : IRQ_NONE;
-}
-
-/**
- * ioc4_attach_local - Device initialization.
- *			Called at *_attach() time for each
- *			IOC4 with serial ports in the system.
- * @idd: Master module data for this IOC4
- */
-static inline int ioc4_attach_local(struct ioc4_driver_data *idd)
-{
-	struct ioc4_port *port;
-	struct ioc4_port *ports[IOC4_NUM_SERIAL_PORTS];
-	int port_number;
-	uint16_t ioc4_revid_min = 62;
-	uint16_t ioc4_revid;
-	struct pci_dev *pdev = idd->idd_pdev;
-	struct ioc4_control* control = idd->idd_serial_data;
-	struct ioc4_soft *soft = control->ic_soft;
-	void __iomem *ioc4_misc = idd->idd_misc_regs;
-	void __iomem *ioc4_serial = soft->is_ioc4_serial_addr;
-
-	/* IOC4 firmware must be at least rev 62 */
-	pci_read_config_word(pdev, PCI_COMMAND_SPECIAL, &ioc4_revid);
-
-	printk(KERN_INFO "IOC4 firmware revision %d\n", ioc4_revid);
-	if (ioc4_revid < ioc4_revid_min) {
-		printk(KERN_WARNING
-		    "IOC4 serial not supported on firmware rev %d, "
-				"please upgrade to rev %d or higher\n",
-				ioc4_revid, ioc4_revid_min);
-		return -EPERM;
-	}
-	BUG_ON(ioc4_misc == NULL);
-	BUG_ON(ioc4_serial == NULL);
-
-	/* Create port structures for each port */
-	for (port_number = 0; port_number < IOC4_NUM_SERIAL_PORTS;
-							port_number++) {
-		port = kzalloc(sizeof(struct ioc4_port), GFP_KERNEL);
-		if (!port) {
-			printk(KERN_WARNING
-				"IOC4 serial memory not available for port\n");
-			goto free;
-		}
-		spin_lock_init(&port->ip_lock);
-
-		/* we need to remember the previous ones, to point back to
-		 * them farther down - setting up the ring buffers.
-		 */
-		ports[port_number] = port;
-
-		/* Allocate buffers and jumpstart the hardware.  */
-		control->ic_port[port_number].icp_port = port;
-		port->ip_ioc4_soft = soft;
-		port->ip_pdev = pdev;
-		port->ip_ienb = 0;
-		/* Use baud rate calculations based on detected PCI
-		 * bus speed.  Simply test whether the PCI clock is
-		 * running closer to 66MHz or 33MHz.
-		 */
-		if (idd->count_period/IOC4_EXTINT_COUNT_DIVISOR < 20) {
-			port->ip_pci_bus_speed = IOC4_SER_XIN_CLK_66;
-		} else {
-			port->ip_pci_bus_speed = IOC4_SER_XIN_CLK_33;
-		}
-		port->ip_baud = 9600;
-		port->ip_control = control;
-		port->ip_mem = ioc4_misc;
-		port->ip_serial = ioc4_serial;
-
-		/* point to the right hook */
-		port->ip_hooks = &hooks_array[port_number];
-
-		/* Get direct hooks to the serial regs and uart regs
-		 * for this port
-		 */
-		switch (port_number) {
-		case 0:
-			port->ip_serial_regs = &(port->ip_serial->port_0);
-			port->ip_uart_regs = &(port->ip_serial->uart_0);
-			break;
-		case 1:
-			port->ip_serial_regs = &(port->ip_serial->port_1);
-			port->ip_uart_regs = &(port->ip_serial->uart_1);
-			break;
-		case 2:
-			port->ip_serial_regs = &(port->ip_serial->port_2);
-			port->ip_uart_regs = &(port->ip_serial->uart_2);
-			break;
-		default:
-		case 3:
-			port->ip_serial_regs = &(port->ip_serial->port_3);
-			port->ip_uart_regs = &(port->ip_serial->uart_3);
-			break;
-		}
-
-		/* ring buffers are 1 to a pair of ports */
-		if (port_number && (port_number & 1)) {
-			/* odd use the evens buffer */
-			port->ip_dma_ringbuf =
-					ports[port_number - 1]->ip_dma_ringbuf;
-			port->ip_cpu_ringbuf =
-					ports[port_number - 1]->ip_cpu_ringbuf;
-			port->ip_inring = RING(port, RX_1_OR_3);
-			port->ip_outring = RING(port, TX_1_OR_3);
-
-		} else {
-			if (port->ip_dma_ringbuf == 0) {
-				port->ip_cpu_ringbuf = pci_alloc_consistent
-					(pdev, TOTAL_RING_BUF_SIZE,
-					&port->ip_dma_ringbuf);
-
-			}
-			BUG_ON(!((((int64_t)port->ip_dma_ringbuf) &
-				(TOTAL_RING_BUF_SIZE - 1)) == 0));
-			DPRINT_CONFIG(("%s : ip_cpu_ringbuf 0x%p "
-						"ip_dma_ringbuf 0x%p\n",
-					__func__,
-					(void *)port->ip_cpu_ringbuf,
-					(void *)port->ip_dma_ringbuf));
-			port->ip_inring = RING(port, RX_0_OR_2);
-			port->ip_outring = RING(port, TX_0_OR_2);
-		}
-		DPRINT_CONFIG(("%s : port %d [addr 0x%p] control 0x%p",
-				__func__,
-				port_number, (void *)port, (void *)control));
-		DPRINT_CONFIG((" ip_serial_regs 0x%p ip_uart_regs 0x%p\n",
-				(void *)port->ip_serial_regs,
-				(void *)port->ip_uart_regs));
-
-		/* Initialize the hardware for IOC4 */
-		port_init(port);
-
-		DPRINT_CONFIG(("%s: port_number %d port 0x%p inring 0x%p "
-						"outring 0x%p\n",
-				__func__,
-				port_number, (void *)port,
-				(void *)port->ip_inring,
-				(void *)port->ip_outring));
-
-		/* Attach interrupt handlers */
-		intr_connect(soft, IOC4_SIO_INTR_TYPE,
-				GET_SIO_IR(port_number),
-				handle_intr, port);
-
-		intr_connect(soft, IOC4_OTHER_INTR_TYPE,
-				GET_OTHER_IR(port_number),
-				handle_dma_error_intr, port);
-	}
-	return 0;
-
-free:
-	while (port_number)
-		kfree(ports[--port_number]);
-	return -ENOMEM;
-}
-
-/**
- * enable_intrs - enable interrupts
- * @port: port to enable
- * @mask: mask to use
- */
-static void enable_intrs(struct ioc4_port *port, uint32_t mask)
-{
-	struct hooks *hooks = port->ip_hooks;
-
-	if ((port->ip_ienb & mask) != mask) {
-		write_ireg(port->ip_ioc4_soft, mask, IOC4_W_IES,
-						IOC4_SIO_INTR_TYPE);
-		port->ip_ienb |= mask;
-	}
-
-	if (port->ip_ienb)
-		write_ireg(port->ip_ioc4_soft, hooks->intr_dma_error,
-				IOC4_W_IES, IOC4_OTHER_INTR_TYPE);
-}
-
-/**
- * local_open - local open a port
- * @port: port to open
- */
-static inline int local_open(struct ioc4_port *port)
-{
-	int spiniter = 0;
-
-	port->ip_flags = PORT_ACTIVE;
-
-	/* Pause the DMA interface if necessary */
-	if (port->ip_sscr & IOC4_SSCR_DMA_EN) {
-		writel(port->ip_sscr | IOC4_SSCR_DMA_PAUSE,
-			&port->ip_serial_regs->sscr);
-		while((readl(&port->ip_serial_regs-> sscr)
-				& IOC4_SSCR_PAUSE_STATE) == 0) {
-			spiniter++;
-			if (spiniter > MAXITER) {
-				port->ip_flags = PORT_INACTIVE;
-				return -1;
-			}
-		}
-	}
-
-	/* Reset the input fifo.  If the uart received chars while the port
-	 * was closed and DMA is not enabled, the uart may have a bunch of
-	 * chars hanging around in its rx fifo which will not be discarded
-	 * by rclr in the upper layer. We must get rid of them here.
-	 */
-	writeb(UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR,
-				&port->ip_uart_regs->i4u_fcr);
-
-	writeb(UART_LCR_WLEN8, &port->ip_uart_regs->i4u_lcr);
-					/* UART_LCR_STOP == 1 stop */
-
-	/* Re-enable DMA, set default threshold to intr whenever there is
-	 * data available.
-	 */
-	port->ip_sscr &= ~IOC4_SSCR_RX_THRESHOLD;
-	port->ip_sscr |= 1;	/* default threshold */
-
-	/* Plug in the new sscr.  This implicitly clears the DMA_PAUSE
-	 * flag if it was set above
-	 */
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	port->ip_tx_lowat = 1;
-	return 0;
-}
-
-/**
- * set_rx_timeout - Set rx timeout and threshold values.
- * @port: port to use
- * @timeout: timeout value in ticks
- */
-static inline int set_rx_timeout(struct ioc4_port *port, int timeout)
-{
-	int threshold;
-
-	port->ip_rx_timeout = timeout;
-
-	/* Timeout is in ticks.  Let's figure out how many chars we
-	 * can receive at the current baud rate in that interval
-	 * and set the rx threshold to that amount.  There are 4 chars
-	 * per ring entry, so we'll divide the number of chars that will
-	 * arrive in timeout by 4.
-	 * So .... timeout * baud / 10 / HZ / 4, with HZ = 100.
-	 */
-	threshold = timeout * port->ip_baud / 4000;
-	if (threshold == 0)
-		threshold = 1;	/* otherwise we'll intr all the time! */
-
-	if ((unsigned)threshold > (unsigned)IOC4_SSCR_RX_THRESHOLD)
-		return 1;
-
-	port->ip_sscr &= ~IOC4_SSCR_RX_THRESHOLD;
-	port->ip_sscr |= threshold;
-
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-
-	/* Now set the rx timeout to the given value
-	 * again timeout * IOC4_SRTR_HZ / HZ
-	 */
-	timeout = timeout * IOC4_SRTR_HZ / 100;
-	if (timeout > IOC4_SRTR_CNT)
-		timeout = IOC4_SRTR_CNT;
-
-	writel(timeout, &port->ip_serial_regs->srtr);
-	return 0;
-}
-
-/**
- * config_port - config the hardware
- * @port: port to config
- * @baud: baud rate for the port
- * @byte_size: data size
- * @stop_bits: number of stop bits
- * @parenb: parity enable ?
- * @parodd: odd parity ?
- */
-static inline int
-config_port(struct ioc4_port *port,
-	    int baud, int byte_size, int stop_bits, int parenb, int parodd)
-{
-	char lcr, sizebits;
-	int spiniter = 0;
-
-	DPRINT_CONFIG(("%s: baud %d byte_size %d stop %d parenb %d parodd %d\n",
-		__func__, baud, byte_size, stop_bits, parenb, parodd));
-
-	if (set_baud(port, baud))
-		return 1;
-
-	switch (byte_size) {
-	case 5:
-		sizebits = UART_LCR_WLEN5;
-		break;
-	case 6:
-		sizebits = UART_LCR_WLEN6;
-		break;
-	case 7:
-		sizebits = UART_LCR_WLEN7;
-		break;
-	case 8:
-		sizebits = UART_LCR_WLEN8;
-		break;
-	default:
-		return 1;
-	}
-
-	/* Pause the DMA interface if necessary */
-	if (port->ip_sscr & IOC4_SSCR_DMA_EN) {
-		writel(port->ip_sscr | IOC4_SSCR_DMA_PAUSE,
-			&port->ip_serial_regs->sscr);
-		while((readl(&port->ip_serial_regs->sscr)
-						& IOC4_SSCR_PAUSE_STATE) == 0) {
-			spiniter++;
-			if (spiniter > MAXITER)
-				return -1;
-		}
-	}
-
-	/* Clear relevant fields in lcr */
-	lcr = readb(&port->ip_uart_regs->i4u_lcr);
-	lcr &= ~(LCR_MASK_BITS_CHAR | UART_LCR_EPAR |
-		 UART_LCR_PARITY | LCR_MASK_STOP_BITS);
-
-	/* Set byte size in lcr */
-	lcr |= sizebits;
-
-	/* Set parity */
-	if (parenb) {
-		lcr |= UART_LCR_PARITY;
-		if (!parodd)
-			lcr |= UART_LCR_EPAR;
-	}
-
-	/* Set stop bits */
-	if (stop_bits)
-		lcr |= UART_LCR_STOP /* 2 stop bits */ ;
-
-	writeb(lcr, &port->ip_uart_regs->i4u_lcr);
-
-	/* Re-enable the DMA interface if necessary */
-	if (port->ip_sscr & IOC4_SSCR_DMA_EN) {
-		writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	}
-	port->ip_baud = baud;
-
-	/* When we get within this number of ring entries of filling the
-	 * entire ring on tx, place an EXPLICIT intr to generate a lowat
-	 * notification when output has drained.
-	 */
-	port->ip_tx_lowat = (TX_LOWAT_CHARS(baud) + 3) / 4;
-	if (port->ip_tx_lowat == 0)
-		port->ip_tx_lowat = 1;
-
-	set_rx_timeout(port, 2);
-
-	return 0;
-}
-
-/**
- * do_write - Write bytes to the port.  Returns the number of bytes
- *			actually written. Called from transmit_chars
- * @port: port to use
- * @buf: the stuff to write
- * @len: how many bytes in 'buf'
- */
-static inline int do_write(struct ioc4_port *port, char *buf, int len)
-{
-	int prod_ptr, cons_ptr, total = 0;
-	struct ring *outring;
-	struct ring_entry *entry;
-	struct hooks *hooks = port->ip_hooks;
-
-	BUG_ON(!(len >= 0));
-
-	prod_ptr = port->ip_tx_prod;
-	cons_ptr = readl(&port->ip_serial_regs->stcir) & PROD_CONS_MASK;
-	outring = port->ip_outring;
-
-	/* Maintain a 1-entry red-zone.  The ring buffer is full when
-	 * (cons - prod) % ring_size is 1.  Rather than do this subtraction
-	 * in the body of the loop, I'll do it now.
-	 */
-	cons_ptr = (cons_ptr - (int)sizeof(struct ring_entry)) & PROD_CONS_MASK;
-
-	/* Stuff the bytes into the output */
-	while ((prod_ptr != cons_ptr) && (len > 0)) {
-		int xx;
-
-		/* Get 4 bytes (one ring entry) at a time */
-		entry = (struct ring_entry *)((caddr_t) outring + prod_ptr);
-
-		/* Invalidate all entries */
-		entry->ring_allsc = 0;
-
-		/* Copy in some bytes */
-		for (xx = 0; (xx < 4) && (len > 0); xx++) {
-			entry->ring_data[xx] = *buf++;
-			entry->ring_sc[xx] = IOC4_TXCB_VALID;
-			len--;
-			total++;
-		}
-
-		/* If we are within some small threshold of filling up the
-		 * entire ring buffer, we must place an EXPLICIT intr here
-		 * to generate a lowat interrupt in case we subsequently
-		 * really do fill up the ring and the caller goes to sleep.
-		 * No need to place more than one though.
-		 */
-		if (!(port->ip_flags & LOWAT_WRITTEN) &&
-			((cons_ptr - prod_ptr) & PROD_CONS_MASK)
-				<= port->ip_tx_lowat
-					* (int)sizeof(struct ring_entry)) {
-			port->ip_flags |= LOWAT_WRITTEN;
-			entry->ring_sc[0] |= IOC4_TXCB_INT_WHEN_DONE;
-		}
-
-		/* Go on to next entry */
-		prod_ptr += sizeof(struct ring_entry);
-		prod_ptr &= PROD_CONS_MASK;
-	}
-
-	/* If we sent something, start DMA if necessary */
-	if (total > 0 && !(port->ip_sscr & IOC4_SSCR_DMA_EN)) {
-		port->ip_sscr |= IOC4_SSCR_DMA_EN;
-		writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	}
-
-	/* Store the new producer pointer.  If tx is disabled, we stuff the
-	 * data into the ring buffer, but we don't actually start tx.
-	 */
-	if (!uart_tx_stopped(port->ip_port)) {
-		writel(prod_ptr, &port->ip_serial_regs->stpir);
-
-		/* If we are now transmitting, enable tx_mt interrupt so we
-		 * can disable DMA if necessary when the tx finishes.
-		 */
-		if (total > 0)
-			enable_intrs(port, hooks->intr_tx_mt);
-	}
-	port->ip_tx_prod = prod_ptr;
-	return total;
-}
-
-/**
- * disable_intrs - disable interrupts
- * @port: port to enable
- * @mask: mask to use
- */
-static void disable_intrs(struct ioc4_port *port, uint32_t mask)
-{
-	struct hooks *hooks = port->ip_hooks;
-
-	if (port->ip_ienb & mask) {
-		write_ireg(port->ip_ioc4_soft, mask, IOC4_W_IEC,
-					IOC4_SIO_INTR_TYPE);
-		port->ip_ienb &= ~mask;
-	}
-
-	if (!port->ip_ienb)
-		write_ireg(port->ip_ioc4_soft, hooks->intr_dma_error,
-				IOC4_W_IEC, IOC4_OTHER_INTR_TYPE);
-}
-
-/**
- * set_notification - Modify event notification
- * @port: port to use
- * @mask: events mask
- * @set_on: set ?
- */
-static int set_notification(struct ioc4_port *port, int mask, int set_on)
-{
-	struct hooks *hooks = port->ip_hooks;
-	uint32_t intrbits, sscrbits;
-
-	BUG_ON(!mask);
-
-	intrbits = sscrbits = 0;
-
-	if (mask & N_DATA_READY)
-		intrbits |= (hooks->intr_rx_timer | hooks->intr_rx_high);
-	if (mask & N_OUTPUT_LOWAT)
-		intrbits |= hooks->intr_tx_explicit;
-	if (mask & N_DDCD) {
-		intrbits |= hooks->intr_delta_dcd;
-		sscrbits |= IOC4_SSCR_RX_RING_DCD;
-	}
-	if (mask & N_DCTS)
-		intrbits |= hooks->intr_delta_cts;
-
-	if (set_on) {
-		enable_intrs(port, intrbits);
-		port->ip_notify |= mask;
-		port->ip_sscr |= sscrbits;
-	} else {
-		disable_intrs(port, intrbits);
-		port->ip_notify &= ~mask;
-		port->ip_sscr &= ~sscrbits;
-	}
-
-	/* We require DMA if either DATA_READY or DDCD notification is
-	 * currently requested. If neither of these is requested and
-	 * there is currently no tx in progress, DMA may be disabled.
-	 */
-	if (port->ip_notify & (N_DATA_READY | N_DDCD))
-		port->ip_sscr |= IOC4_SSCR_DMA_EN;
-	else if (!(port->ip_ienb & hooks->intr_tx_mt))
-		port->ip_sscr &= ~IOC4_SSCR_DMA_EN;
-
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	return 0;
-}
-
-/**
- * set_mcr - set the master control reg
- * @the_port: port to use
- * @mask1: mcr mask
- * @mask2: shadow mask
- */
-static inline int set_mcr(struct uart_port *the_port,
-		int mask1, int mask2)
-{
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-	uint32_t shadow;
-	int spiniter = 0;
-	char mcr;
-
-	if (!port)
-		return -1;
-
-	/* Pause the DMA interface if necessary */
-	if (port->ip_sscr & IOC4_SSCR_DMA_EN) {
-		writel(port->ip_sscr | IOC4_SSCR_DMA_PAUSE,
-			&port->ip_serial_regs->sscr);
-		while ((readl(&port->ip_serial_regs->sscr)
-					& IOC4_SSCR_PAUSE_STATE) == 0) {
-			spiniter++;
-			if (spiniter > MAXITER)
-				return -1;
-		}
-	}
-	shadow = readl(&port->ip_serial_regs->shadow);
-	mcr = (shadow & 0xff000000) >> 24;
-
-	/* Set new value */
-	mcr |= mask1;
-	shadow |= mask2;
-
-	writeb(mcr, &port->ip_uart_regs->i4u_mcr);
-	writel(shadow, &port->ip_serial_regs->shadow);
-
-	/* Re-enable the DMA interface if necessary */
-	if (port->ip_sscr & IOC4_SSCR_DMA_EN) {
-		writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	}
-	return 0;
-}
-
-/**
- * ioc4_set_proto - set the protocol for the port
- * @port: port to use
- * @proto: protocol to use
- */
-static int ioc4_set_proto(struct ioc4_port *port, int proto)
-{
-	struct hooks *hooks = port->ip_hooks;
-
-	switch (proto) {
-	case PROTO_RS232:
-		/* Clear the appropriate GIO pin */
-		writel(0, (&port->ip_mem->gppr[hooks->rs422_select_pin].raw));
-		break;
-
-	case PROTO_RS422:
-		/* Set the appropriate GIO pin */
-		writel(1, (&port->ip_mem->gppr[hooks->rs422_select_pin].raw));
-		break;
-
-	default:
-		return 1;
-	}
-	return 0;
-}
-
-/**
- * transmit_chars - upper level write, called with ip_lock
- * @the_port: port to write
- */
-static void transmit_chars(struct uart_port *the_port)
-{
-	int xmit_count, tail, head;
-	int result;
-	char *start;
-	struct tty_struct *tty;
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-	struct uart_state *state;
-
-	if (!the_port)
-		return;
-	if (!port)
-		return;
-
-	state = the_port->state;
-	tty = state->port.tty;
-
-	if (uart_circ_empty(&state->xmit) || uart_tx_stopped(the_port)) {
-		/* Nothing to do or hw stopped */
-		set_notification(port, N_ALL_OUTPUT, 0);
-		return;
-	}
-
-	head = state->xmit.head;
-	tail = state->xmit.tail;
-	start = (char *)&state->xmit.buf[tail];
-
-	/* write out all the data or until the end of the buffer */
-	xmit_count = (head < tail) ? (UART_XMIT_SIZE - tail) : (head - tail);
-	if (xmit_count > 0) {
-		result = do_write(port, start, xmit_count);
-		if (result > 0) {
-			/* booking */
-			xmit_count -= result;
-			the_port->icount.tx += result;
-			/* advance the pointers */
-			tail += result;
-			tail &= UART_XMIT_SIZE - 1;
-			state->xmit.tail = tail;
-			start = (char *)&state->xmit.buf[tail];
-		}
-	}
-	if (uart_circ_chars_pending(&state->xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(the_port);
-
-	if (uart_circ_empty(&state->xmit)) {
-		set_notification(port, N_OUTPUT_LOWAT, 0);
-	} else {
-		set_notification(port, N_OUTPUT_LOWAT, 1);
-	}
-}
-
-/**
- * ioc4_change_speed - change the speed of the port
- * @the_port: port to change
- * @new_termios: new termios settings
- * @old_termios: old termios settings
- */
-static void
-ioc4_change_speed(struct uart_port *the_port,
-		  struct ktermios *new_termios, struct ktermios *old_termios)
-{
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-	int baud, bits;
-	unsigned cflag, iflag;
-	int new_parity = 0, new_parity_enable = 0, new_stop = 0, new_data = 8;
-	struct uart_state *state = the_port->state;
-
-	cflag = new_termios->c_cflag;
-	iflag = new_termios->c_iflag;
-
-	switch (cflag & CSIZE) {
-	case CS5:
-		new_data = 5;
-		bits = 7;
-		break;
-	case CS6:
-		new_data = 6;
-		bits = 8;
-		break;
-	case CS7:
-		new_data = 7;
-		bits = 9;
-		break;
-	case CS8:
-		new_data = 8;
-		bits = 10;
-		break;
-	default:
-		/* cuz we always need a default ... */
-		new_data = 5;
-		bits = 7;
-		break;
-	}
-	if (cflag & CSTOPB) {
-		bits++;
-		new_stop = 1;
-	}
-	if (cflag & PARENB) {
-		bits++;
-		new_parity_enable = 1;
-		if (cflag & PARODD)
-			new_parity = 1;
-	}
-	baud = uart_get_baud_rate(the_port, new_termios, old_termios,
-				MIN_BAUD_SUPPORTED, MAX_BAUD_SUPPORTED);
-	DPRINT_CONFIG(("%s: returned baud %d\n", __func__, baud));
-
-	/* default is 9600 */
-	if (!baud)
-		baud = 9600;
-
-	if (!the_port->fifosize)
-		the_port->fifosize = IOC4_FIFO_CHARS;
-	the_port->timeout = ((the_port->fifosize * HZ * bits) / (baud / 10));
-	the_port->timeout += HZ / 50;	/* Add .02 seconds of slop */
-
-	the_port->ignore_status_mask = N_ALL_INPUT;
-
-	state->port.low_latency = 1;
-
-	if (iflag & IGNPAR)
-		the_port->ignore_status_mask &= ~(N_PARITY_ERROR
-						| N_FRAMING_ERROR);
-	if (iflag & IGNBRK) {
-		the_port->ignore_status_mask &= ~N_BREAK;
-		if (iflag & IGNPAR)
-			the_port->ignore_status_mask &= ~N_OVERRUN_ERROR;
-	}
-	if (!(cflag & CREAD)) {
-		/* ignore everything */
-		the_port->ignore_status_mask &= ~N_DATA_READY;
-	}
-
-	if (cflag & CRTSCTS) {
-		port->ip_sscr |= IOC4_SSCR_HFC_EN;
-	}
-	else {
-		port->ip_sscr &= ~IOC4_SSCR_HFC_EN;
-	}
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-
-	/* Set the configuration and proper notification call */
-	DPRINT_CONFIG(("%s : port 0x%p cflag 0%o "
-		"config_port(baud %d data %d stop %d p enable %d parity %d),"
-		" notification 0x%x\n",
-	     __func__, (void *)port, cflag, baud, new_data, new_stop,
-	     new_parity_enable, new_parity, the_port->ignore_status_mask));
-
-	if ((config_port(port, baud,		/* baud */
-			 new_data,		/* byte size */
-			 new_stop,		/* stop bits */
-			 new_parity_enable,	/* set parity */
-			 new_parity)) >= 0) {	/* parity 1==odd */
-		set_notification(port, the_port->ignore_status_mask, 1);
-	}
-}
-
-/**
- * ic4_startup_local - Start up the serial port - returns >= 0 if no errors
- * @the_port: Port to operate on
- */
-static inline int ic4_startup_local(struct uart_port *the_port)
-{
-	struct ioc4_port *port;
-	struct uart_state *state;
-
-	if (!the_port)
-		return -1;
-
-	port = get_ioc4_port(the_port, 0);
-	if (!port)
-		return -1;
-
-	state = the_port->state;
-
-	local_open(port);
-
-	/* set the protocol - mapbase has the port type */
-	ioc4_set_proto(port, the_port->mapbase);
-
-	/* set the speed of the serial port */
-	ioc4_change_speed(the_port, &state->port.tty->termios,
-			  (struct ktermios *)0);
-
-	return 0;
-}
-
-/*
- * ioc4_cb_output_lowat - called when the output low water mark is hit
- * @the_port: port to output
- */
-static void ioc4_cb_output_lowat(struct uart_port *the_port)
-{
-	unsigned long pflags;
-
-	/* ip_lock is set on the call here */
-	if (the_port) {
-		spin_lock_irqsave(&the_port->lock, pflags);
-		transmit_chars(the_port);
-		spin_unlock_irqrestore(&the_port->lock, pflags);
-	}
-}
-
-/**
- * handle_intr - service any interrupts for the given port - 2nd level
- *			called via sd_intr
- * @arg: handler arg
- * @sio_ir: ioc4regs
- */
-static void handle_intr(void *arg, uint32_t sio_ir)
-{
-	struct ioc4_port *port = (struct ioc4_port *)arg;
-	struct hooks *hooks = port->ip_hooks;
-	unsigned int rx_high_rd_aborted = 0;
-	unsigned long flags;
-	struct uart_port *the_port;
-	int loop_counter;
-
-	/* Possible race condition here: The tx_mt interrupt bit may be
-	 * cleared without the intervention of the interrupt handler,
-	 * e.g. by a write.  If the top level interrupt handler reads a
-	 * tx_mt, then some other processor does a write, starting up
-	 * output, then we come in here, see the tx_mt and stop DMA, the
-	 * output started by the other processor will hang.  Thus we can
-	 * only rely on tx_mt being legitimate if it is read while the
-	 * port lock is held.  Therefore this bit must be ignored in the
-	 * passed in interrupt mask which was read by the top level
-	 * interrupt handler since the port lock was not held at the time
-	 * it was read.  We can only rely on this bit being accurate if it
-	 * is read while the port lock is held.  So we'll clear it for now,
-	 * and reload it later once we have the port lock.
-	 */
-	sio_ir &= ~(hooks->intr_tx_mt);
-
-	spin_lock_irqsave(&port->ip_lock, flags);
-
-	loop_counter = MAXITER;	/* to avoid hangs */
-
-	do {
-		uint32_t shadow;
-
-		if ( loop_counter-- <= 0 ) {
-			printk(KERN_WARNING "IOC4 serial: "
-					"possible hang condition/"
-					"port stuck on interrupt.\n");
-			break;
-		}
-
-		/* Handle a DCD change */
-		if (sio_ir & hooks->intr_delta_dcd) {
-			/* ACK the interrupt */
-			writel(hooks->intr_delta_dcd,
-				&port->ip_mem->sio_ir.raw);
-
-			shadow = readl(&port->ip_serial_regs->shadow);
-
-			if ((port->ip_notify & N_DDCD)
-					&& (shadow & IOC4_SHADOW_DCD)
-					&& (port->ip_port)) {
-				the_port = port->ip_port;
-				the_port->icount.dcd = 1;
-				wake_up_interruptible
-					    (&the_port->state->port.delta_msr_wait);
-			} else if ((port->ip_notify & N_DDCD)
-					&& !(shadow & IOC4_SHADOW_DCD)) {
-				/* Flag delta DCD/no DCD */
-				port->ip_flags |= DCD_ON;
-			}
-		}
-
-		/* Handle a CTS change */
-		if (sio_ir & hooks->intr_delta_cts) {
-			/* ACK the interrupt */
-			writel(hooks->intr_delta_cts,
-					&port->ip_mem->sio_ir.raw);
-
-			shadow = readl(&port->ip_serial_regs->shadow);
-
-			if ((port->ip_notify & N_DCTS)
-					&& (port->ip_port)) {
-				the_port = port->ip_port;
-				the_port->icount.cts =
-					(shadow & IOC4_SHADOW_CTS) ? 1 : 0;
-				wake_up_interruptible
-					(&the_port->state->port.delta_msr_wait);
-			}
-		}
-
-		/* rx timeout interrupt.  Must be some data available.  Put this
-		 * before the check for rx_high since servicing this condition
-		 * may cause that condition to clear.
-		 */
-		if (sio_ir & hooks->intr_rx_timer) {
-			/* ACK the interrupt */
-			writel(hooks->intr_rx_timer,
-				&port->ip_mem->sio_ir.raw);
-
-			if ((port->ip_notify & N_DATA_READY)
-					&& (port->ip_port)) {
-				/* ip_lock is set on call here */
-				receive_chars(port->ip_port);
-			}
-		}
-
-		/* rx high interrupt. Must be after rx_timer.  */
-		else if (sio_ir & hooks->intr_rx_high) {
-			/* Data available, notify upper layer */
-			if ((port->ip_notify & N_DATA_READY)
-						&& port->ip_port) {
-				/* ip_lock is set on call here */
-				receive_chars(port->ip_port);
-			}
-
-			/* We can't ACK this interrupt.  If receive_chars didn't
-			 * cause the condition to clear, we'll have to disable
-			 * the interrupt until the data is drained.
-			 * If the read was aborted, don't disable the interrupt
-			 * as this may cause us to hang indefinitely.  An
-			 * aborted read generally means that this interrupt
-			 * hasn't been delivered to the cpu yet anyway, even
-			 * though we see it as asserted when we read the sio_ir.
-			 */
-			if ((sio_ir = PENDING(port)) & hooks->intr_rx_high) {
-				if ((port->ip_flags & READ_ABORTED) == 0) {
-					port->ip_ienb &= ~hooks->intr_rx_high;
-					port->ip_flags |= INPUT_HIGH;
-				} else {
-					rx_high_rd_aborted++;
-				}
-			}
-		}
-
-		/* We got a low water interrupt: notify upper layer to
-		 * send more data.  Must come before tx_mt since servicing
-		 * this condition may cause that condition to clear.
-		 */
-		if (sio_ir & hooks->intr_tx_explicit) {
-			port->ip_flags &= ~LOWAT_WRITTEN;
-
-			/* ACK the interrupt */
-			writel(hooks->intr_tx_explicit,
-					&port->ip_mem->sio_ir.raw);
-
-			if (port->ip_notify & N_OUTPUT_LOWAT)
-				ioc4_cb_output_lowat(port->ip_port);
-		}
-
-		/* Handle tx_mt.  Must come after tx_explicit.  */
-		else if (sio_ir & hooks->intr_tx_mt) {
-			/* If we are expecting a lowat notification
-			 * and we get to this point it probably means that for
-			 * some reason the tx_explicit didn't work as expected
-			 * (that can legitimately happen if the output buffer is
-			 * filled up in just the right way).
-			 * So send the notification now.
-			 */
-			if (port->ip_notify & N_OUTPUT_LOWAT) {
-				ioc4_cb_output_lowat(port->ip_port);
-
-				/* We need to reload the sio_ir since the lowat
-				 * call may have caused another write to occur,
-				 * clearing the tx_mt condition.
-				 */
-				sio_ir = PENDING(port);
-			}
-
-			/* If the tx_mt condition still persists even after the
-			 * lowat call, we've got some work to do.
-			 */
-			if (sio_ir & hooks->intr_tx_mt) {
-
-				/* If we are not currently expecting DMA input,
-				 * and the transmitter has just gone idle,
-				 * there is no longer any reason for DMA, so
-				 * disable it.
-				 */
-				if (!(port->ip_notify
-						& (N_DATA_READY | N_DDCD))) {
-					BUG_ON(!(port->ip_sscr
-							& IOC4_SSCR_DMA_EN));
-					port->ip_sscr &= ~IOC4_SSCR_DMA_EN;
-					writel(port->ip_sscr,
-					   &port->ip_serial_regs->sscr);
-				}
-
-				/* Prevent infinite tx_mt interrupt */
-				port->ip_ienb &= ~hooks->intr_tx_mt;
-			}
-		}
-		sio_ir = PENDING(port);
-
-		/* if the read was aborted and only hooks->intr_rx_high,
-		 * clear hooks->intr_rx_high, so we do not loop forever.
-		 */
-
-		if (rx_high_rd_aborted && (sio_ir == hooks->intr_rx_high)) {
-			sio_ir &= ~hooks->intr_rx_high;
-		}
-	} while (sio_ir & hooks->intr_all);
-
-	spin_unlock_irqrestore(&port->ip_lock, flags);
-
-	/* Re-enable interrupts before returning from interrupt handler.
-	 * Getting interrupted here is okay.  It'll just v() our semaphore, and
-	 * we'll come through the loop again.
-	 */
-
-	write_ireg(port->ip_ioc4_soft, port->ip_ienb, IOC4_W_IES,
-							IOC4_SIO_INTR_TYPE);
-}
-
-/*
- * ioc4_cb_post_ncs - called for some basic errors
- * @port: port to use
- * @ncs: event
- */
-static void ioc4_cb_post_ncs(struct uart_port *the_port, int ncs)
-{
-	struct uart_icount *icount;
-
-	icount = &the_port->icount;
-
-	if (ncs & NCS_BREAK)
-		icount->brk++;
-	if (ncs & NCS_FRAMING)
-		icount->frame++;
-	if (ncs & NCS_OVERRUN)
-		icount->overrun++;
-	if (ncs & NCS_PARITY)
-		icount->parity++;
-}
-
-/**
- * do_read - Read in bytes from the port.  Return the number of bytes
- *			actually read.
- * @the_port: port to use
- * @buf: place to put the stuff we read
- * @len: how big 'buf' is
- */
-
-static inline int do_read(struct uart_port *the_port, unsigned char *buf,
-				int len)
-{
-	int prod_ptr, cons_ptr, total;
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-	struct ring *inring;
-	struct ring_entry *entry;
-	struct hooks *hooks;
-	int byte_num;
-	char *sc;
-	int loop_counter;
-
-	BUG_ON(!(len >= 0));
-	BUG_ON(!port);
-	hooks = port->ip_hooks;
-
-	/* There is a nasty timing issue in the IOC4. When the rx_timer
-	 * expires or the rx_high condition arises, we take an interrupt.
-	 * At some point while servicing the interrupt, we read bytes from
-	 * the ring buffer and re-arm the rx_timer.  However the rx_timer is
-	 * not started until the first byte is received *after* it is armed,
-	 * and any bytes pending in the rx construction buffers are not drained
-	 * to memory until either there are 4 bytes available or the rx_timer
-	 * expires.  This leads to a potential situation where data is left
-	 * in the construction buffers forever - 1 to 3 bytes were received
-	 * after the interrupt was generated but before the rx_timer was
-	 * re-armed. At that point as long as no subsequent bytes are received
-	 * the timer will never be started and the bytes will remain in the
-	 * construction buffer forever.  The solution is to execute a DRAIN
-	 * command after rearming the timer.  This way any bytes received before
-	 * the DRAIN will be drained to memory, and any bytes received after
-	 * the DRAIN will start the TIMER and be drained when it expires.
-	 * Luckily, this only needs to be done when the DMA buffer is empty
-	 * since there is no requirement that this function return all
-	 * available data as long as it returns some.
-	 */
-	/* Re-arm the timer */
-	writel(port->ip_rx_cons | IOC4_SRCIR_ARM, &port->ip_serial_regs->srcir);
-
-	prod_ptr = readl(&port->ip_serial_regs->srpir) & PROD_CONS_MASK;
-	cons_ptr = port->ip_rx_cons;
-
-	if (prod_ptr == cons_ptr) {
-		int reset_dma = 0;
-
-		/* Input buffer appears empty, do a flush. */
-
-		/* DMA must be enabled for this to work. */
-		if (!(port->ip_sscr & IOC4_SSCR_DMA_EN)) {
-			port->ip_sscr |= IOC4_SSCR_DMA_EN;
-			reset_dma = 1;
-		}
-
-		/* Potential race condition: we must reload the srpir after
-		 * issuing the drain command, otherwise we could think the rx
-		 * buffer is empty, then take a very long interrupt, and when
-		 * we come back it's full and we wait forever for the drain to
-		 * complete.
-		 */
-		writel(port->ip_sscr | IOC4_SSCR_RX_DRAIN,
-				&port->ip_serial_regs->sscr);
-		prod_ptr = readl(&port->ip_serial_regs->srpir)
-				& PROD_CONS_MASK;
-
-		/* We must not wait for the DRAIN to complete unless there are
-		 * at least 8 bytes (2 ring entries) available to receive the
-		 * data otherwise the DRAIN will never complete and we'll
-		 * deadlock here.
-		 * In fact, to make things easier, I'll just ignore the flush if
-		 * there is any data at all now available.
-		 */
-		if (prod_ptr == cons_ptr) {
-			loop_counter = 0;
-			while (readl(&port->ip_serial_regs->sscr) &
-						IOC4_SSCR_RX_DRAIN) {
-				loop_counter++;
-				if (loop_counter > MAXITER)
-					return -1;
-			}
-
-			/* SIGH. We have to reload the prod_ptr *again* since
-			 * the drain may have caused it to change
-			 */
-			prod_ptr = readl(&port->ip_serial_regs->srpir)
-							& PROD_CONS_MASK;
-		}
-		if (reset_dma) {
-			port->ip_sscr &= ~IOC4_SSCR_DMA_EN;
-			writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-		}
-	}
-	inring = port->ip_inring;
-	port->ip_flags &= ~READ_ABORTED;
-
-	total = 0;
-	loop_counter = 0xfffff;	/* to avoid hangs */
-
-	/* Grab bytes from the hardware */
-	while ((prod_ptr != cons_ptr) && (len > 0)) {
-		entry = (struct ring_entry *)((caddr_t)inring + cons_ptr);
-
-		if ( loop_counter-- <= 0 ) {
-			printk(KERN_WARNING "IOC4 serial: "
-					"possible hang condition/"
-					"port stuck on read.\n");
-			break;
-		}
-
-		/* According to the producer pointer, this ring entry
-		 * must contain some data.  But if the PIO happened faster
-		 * than the DMA, the data may not be available yet, so let's
-		 * wait until it arrives.
-		 */
-		if ((entry->ring_allsc & RING_ANY_VALID) == 0) {
-			/* Indicate the read is aborted so we don't disable
-			 * the interrupt thinking that the consumer is
-			 * congested.
-			 */
-			port->ip_flags |= READ_ABORTED;
-			len = 0;
-			break;
-		}
-
-		/* Load the bytes/status out of the ring entry */
-		for (byte_num = 0; byte_num < 4 && len > 0; byte_num++) {
-			sc = &(entry->ring_sc[byte_num]);
-
-			/* Check for change in modem state or overrun */
-			if ((*sc & IOC4_RXSB_MODEM_VALID)
-						&& (port->ip_notify & N_DDCD)) {
-				/* Notify upper layer if DCD dropped */
-
-				if ((port->ip_flags & DCD_ON)
-						&& !(*sc & IOC4_RXSB_DCD)) {
-
-					/* If we have already copied some data,
-					 * return it.  We'll pick up the carrier
-					 * drop on the next pass.  That way we
-					 * don't throw away the data that has
-					 * already been copied back to
-					 * the caller's buffer.
-					 */
-					if (total > 0) {
-						len = 0;
-						break;
-					}
-					port->ip_flags &= ~DCD_ON;
-
-					/* Turn off this notification so the
-					 * carrier drop protocol won't see it
-					 * again when it does a read.
-					 */
-					*sc &= ~IOC4_RXSB_MODEM_VALID;
-
-					/* To keep things consistent, we need
-					 * to update the consumer pointer so
-					 * the next reader won't come in and
-					 * try to read the same ring entries
-					 * again. This must be done here before
-					 * the dcd change.
-					 */
-
-					if ((entry->ring_allsc & RING_ANY_VALID)
-									== 0) {
-						cons_ptr += (int)sizeof
-							(struct ring_entry);
-						cons_ptr &= PROD_CONS_MASK;
-					}
-					writel(cons_ptr,
-						&port->ip_serial_regs->srcir);
-					port->ip_rx_cons = cons_ptr;
-
-					/* Notify upper layer of carrier drop */
-					if ((port->ip_notify & N_DDCD)
-						   && port->ip_port) {
-						the_port->icount.dcd = 0;
-						wake_up_interruptible
-						    (&the_port->state->
-							port.delta_msr_wait);
-					}
-
-					/* If we had any data to return, we
-					 * would have returned it above.
-					 */
-					return 0;
-				}
-			}
-			if (*sc & IOC4_RXSB_MODEM_VALID) {
-				/* Notify that an input overrun occurred */
-				if ((*sc & IOC4_RXSB_OVERRUN)
-				    && (port->ip_notify & N_OVERRUN_ERROR)) {
-					ioc4_cb_post_ncs(the_port, NCS_OVERRUN);
-				}
-				/* Don't look at this byte again */
-				*sc &= ~IOC4_RXSB_MODEM_VALID;
-			}
-
-			/* Check for valid data or RX errors */
-			if ((*sc & IOC4_RXSB_DATA_VALID) &&
-					((*sc & (IOC4_RXSB_PAR_ERR
-							| IOC4_RXSB_FRAME_ERR
-							| IOC4_RXSB_BREAK))
-					&& (port->ip_notify & (N_PARITY_ERROR
-							| N_FRAMING_ERROR
-							| N_BREAK)))) {
-				/* There is an error condition on the next byte.
-				 * If we have already transferred some bytes,
-				 * we'll stop here. Otherwise if this is the
-				 * first byte to be read, we'll just transfer
-				 * it alone after notifying the
-				 * upper layer of its status.
-				 */
-				if (total > 0) {
-					len = 0;
-					break;
-				} else {
-					if ((*sc & IOC4_RXSB_PAR_ERR) &&
-					   (port->ip_notify & N_PARITY_ERROR)) {
-						ioc4_cb_post_ncs(the_port,
-								NCS_PARITY);
-					}
-					if ((*sc & IOC4_RXSB_FRAME_ERR) &&
-					   (port->ip_notify & N_FRAMING_ERROR)){
-						ioc4_cb_post_ncs(the_port,
-								NCS_FRAMING);
-					}
-					if ((*sc & IOC4_RXSB_BREAK)
-					    && (port->ip_notify & N_BREAK)) {
-							ioc4_cb_post_ncs
-								    (the_port,
-								     NCS_BREAK);
-					}
-					len = 1;
-				}
-			}
-			if (*sc & IOC4_RXSB_DATA_VALID) {
-				*sc &= ~IOC4_RXSB_DATA_VALID;
-				*buf = entry->ring_data[byte_num];
-				buf++;
-				len--;
-				total++;
-			}
-		}
-
-		/* If we used up this entry entirely, go on to the next one,
-		 * otherwise we must have run out of buffer space, so
-		 * leave the consumer pointer here for the next read in case
-		 * there are still unread bytes in this entry.
-		 */
-		if ((entry->ring_allsc & RING_ANY_VALID) == 0) {
-			cons_ptr += (int)sizeof(struct ring_entry);
-			cons_ptr &= PROD_CONS_MASK;
-		}
-	}
-
-	/* Update consumer pointer and re-arm rx timer interrupt */
-	writel(cons_ptr, &port->ip_serial_regs->srcir);
-	port->ip_rx_cons = cons_ptr;
-
-	/* If we have now dipped below the rx high water mark and we have
-	 * rx_high interrupt turned off, we can now turn it back on again.
-	 */
-	if ((port->ip_flags & INPUT_HIGH) && (((prod_ptr - cons_ptr)
-			& PROD_CONS_MASK) < ((port->ip_sscr &
-				IOC4_SSCR_RX_THRESHOLD)
-					<< IOC4_PROD_CONS_PTR_OFF))) {
-		port->ip_flags &= ~INPUT_HIGH;
-		enable_intrs(port, hooks->intr_rx_high);
-	}
-	return total;
-}
-
-/**
- * receive_chars - upper level read. Called with ip_lock.
- * @the_port: port to read from
- */
-static void receive_chars(struct uart_port *the_port)
-{
-	unsigned char ch[IOC4_MAX_CHARS];
-	int read_count, request_count = IOC4_MAX_CHARS;
-	struct uart_icount *icount;
-	struct uart_state *state = the_port->state;
-	unsigned long pflags;
-
-	/* Make sure all the pointers are "good" ones */
-	if (!state)
-		return;
-
-	spin_lock_irqsave(&the_port->lock, pflags);
-
-	request_count = tty_buffer_request_room(&state->port, IOC4_MAX_CHARS);
-
-	if (request_count > 0) {
-		icount = &the_port->icount;
-		read_count = do_read(the_port, ch, request_count);
-		if (read_count > 0) {
-			tty_insert_flip_string(&state->port, ch, read_count);
-			icount->rx += read_count;
-		}
-	}
-
-	spin_unlock_irqrestore(&the_port->lock, pflags);
-
-	tty_flip_buffer_push(&state->port);
-}
-
-/**
- * ic4_type - What type of console are we?
- * @port: Port to operate with (we ignore since we only have one port)
- *
- */
-static const char *ic4_type(struct uart_port *the_port)
-{
-	if (the_port->mapbase == PROTO_RS232)
-		return "SGI IOC4 Serial [rs232]";
-	else
-		return "SGI IOC4 Serial [rs422]";
-}
-
-/**
- * ic4_tx_empty - Is the transmitter empty?
- * @port: Port to operate on
- *
- */
-static unsigned int ic4_tx_empty(struct uart_port *the_port)
-{
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-	unsigned int ret = 0;
-
-	if (port_is_active(port, the_port)) {
-		if (readl(&port->ip_serial_regs->shadow) & IOC4_SHADOW_TEMT)
-			ret = TIOCSER_TEMT;
-	}
-	return ret;
-}
-
-/**
- * ic4_stop_tx - stop the transmitter
- * @port: Port to operate on
- *
- */
-static void ic4_stop_tx(struct uart_port *the_port)
-{
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-
-	if (port_is_active(port, the_port))
-		set_notification(port, N_OUTPUT_LOWAT, 0);
-}
-
-/**
- * null_void_function -
- * @port: Port to operate on
- *
- */
-static void null_void_function(struct uart_port *the_port)
-{
-}
-
-/**
- * ic4_shutdown - shut down the port - free irq and disable
- * @port: Port to shut down
- *
- */
-static void ic4_shutdown(struct uart_port *the_port)
-{
-	unsigned long port_flags;
-	struct ioc4_port *port;
-	struct uart_state *state;
-
-	port = get_ioc4_port(the_port, 0);
-	if (!port)
-		return;
-
-	state = the_port->state;
-	port->ip_port = NULL;
-
-	wake_up_interruptible(&state->port.delta_msr_wait);
-
-	if (state->port.tty)
-		set_bit(TTY_IO_ERROR, &state->port.tty->flags);
-
-	spin_lock_irqsave(&the_port->lock, port_flags);
-	set_notification(port, N_ALL, 0);
-	port->ip_flags = PORT_INACTIVE;
-	spin_unlock_irqrestore(&the_port->lock, port_flags);
-}
-
-/**
- * ic4_set_mctrl - set control lines (dtr, rts, etc)
- * @port: Port to operate on
- * @mctrl: Lines to set/unset
- *
- */
-static void ic4_set_mctrl(struct uart_port *the_port, unsigned int mctrl)
-{
-	unsigned char mcr = 0;
-	struct ioc4_port *port;
-
-	port = get_ioc4_port(the_port, 0);
-	if (!port_is_active(port, the_port))
-		return;
-
-	if (mctrl & TIOCM_RTS)
-		mcr |= UART_MCR_RTS;
-	if (mctrl & TIOCM_DTR)
-		mcr |= UART_MCR_DTR;
-	if (mctrl & TIOCM_OUT1)
-		mcr |= UART_MCR_OUT1;
-	if (mctrl & TIOCM_OUT2)
-		mcr |= UART_MCR_OUT2;
-	if (mctrl & TIOCM_LOOP)
-		mcr |= UART_MCR_LOOP;
-
-	set_mcr(the_port, mcr, IOC4_SHADOW_DTR);
-}
-
-/**
- * ic4_get_mctrl - get control line info
- * @port: port to operate on
- *
- */
-static unsigned int ic4_get_mctrl(struct uart_port *the_port)
-{
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-	uint32_t shadow;
-	unsigned int ret = 0;
-
-	if (!port_is_active(port, the_port))
-		return 0;
-
-	shadow = readl(&port->ip_serial_regs->shadow);
-	if (shadow & IOC4_SHADOW_DCD)
-		ret |= TIOCM_CAR;
-	if (shadow & IOC4_SHADOW_DR)
-		ret |= TIOCM_DSR;
-	if (shadow & IOC4_SHADOW_CTS)
-		ret |= TIOCM_CTS;
-	return ret;
-}
-
-/**
- * ic4_start_tx - Start transmitter, flush any output
- * @port: Port to operate on
- *
- */
-static void ic4_start_tx(struct uart_port *the_port)
-{
-	struct ioc4_port *port = get_ioc4_port(the_port, 0);
-
-	if (port_is_active(port, the_port)) {
-		set_notification(port, N_OUTPUT_LOWAT, 1);
-		enable_intrs(port, port->ip_hooks->intr_tx_mt);
-	}
-}
-
-/**
- * ic4_break_ctl - handle breaks
- * @port: Port to operate on
- * @break_state: Break state
- *
- */
-static void ic4_break_ctl(struct uart_port *the_port, int break_state)
-{
-}
-
-/**
- * ic4_startup - Start up the serial port
- * @port: Port to operate on
- *
- */
-static int ic4_startup(struct uart_port *the_port)
-{
-	int retval;
-	struct ioc4_port *port;
-	struct ioc4_control *control;
-	struct uart_state *state;
-	unsigned long port_flags;
-
-	if (!the_port)
-		return -ENODEV;
-	port = get_ioc4_port(the_port, 1);
-	if (!port)
-		return -ENODEV;
-	state = the_port->state;
-
-	control = port->ip_control;
-	if (!control) {
-		port->ip_port = NULL;
-		return -ENODEV;
-	}
-
-	/* Start up the serial port */
-	spin_lock_irqsave(&the_port->lock, port_flags);
-	retval = ic4_startup_local(the_port);
-	spin_unlock_irqrestore(&the_port->lock, port_flags);
-	return retval;
-}
-
-/**
- * ic4_set_termios - set termios stuff
- * @port: port to operate on
- * @termios: New settings
- * @termios: Old
- *
- */
-static void
-ic4_set_termios(struct uart_port *the_port,
-		struct ktermios *termios, struct ktermios *old_termios)
-{
-	unsigned long port_flags;
-
-	spin_lock_irqsave(&the_port->lock, port_flags);
-	ioc4_change_speed(the_port, termios, old_termios);
-	spin_unlock_irqrestore(&the_port->lock, port_flags);
-}
-
-/**
- * ic4_request_port - allocate resources for port - no op....
- * @port: port to operate on
- *
- */
-static int ic4_request_port(struct uart_port *port)
-{
-	return 0;
-}
-
-/* Associate the uart functions above - given to serial core */
-
-static const struct uart_ops ioc4_ops = {
-	.tx_empty	= ic4_tx_empty,
-	.set_mctrl	= ic4_set_mctrl,
-	.get_mctrl	= ic4_get_mctrl,
-	.stop_tx	= ic4_stop_tx,
-	.start_tx	= ic4_start_tx,
-	.stop_rx	= null_void_function,
-	.break_ctl	= ic4_break_ctl,
-	.startup	= ic4_startup,
-	.shutdown	= ic4_shutdown,
-	.set_termios	= ic4_set_termios,
-	.type		= ic4_type,
-	.release_port	= null_void_function,
-	.request_port	= ic4_request_port,
-};
-
-/*
- * Boot-time initialization code
- */
-
-static struct uart_driver ioc4_uart_rs232 = {
-	.owner		= THIS_MODULE,
-	.driver_name	= "ioc4_serial_rs232",
-	.dev_name	= DEVICE_NAME_RS232,
-	.major		= DEVICE_MAJOR,
-	.minor		= DEVICE_MINOR_RS232,
-	.nr		= IOC4_NUM_CARDS * IOC4_NUM_SERIAL_PORTS,
-};
-
-static struct uart_driver ioc4_uart_rs422 = {
-	.owner		= THIS_MODULE,
-	.driver_name	= "ioc4_serial_rs422",
-	.dev_name	= DEVICE_NAME_RS422,
-	.major		= DEVICE_MAJOR,
-	.minor		= DEVICE_MINOR_RS422,
-	.nr		= IOC4_NUM_CARDS * IOC4_NUM_SERIAL_PORTS,
-};
-
-
-/**
- * ioc4_serial_remove_one - detach function
- *
- * @idd: IOC4 master module data for this IOC4
- */
-
-static int ioc4_serial_remove_one(struct ioc4_driver_data *idd)
-{
-	int port_num, port_type;
-	struct ioc4_control *control;
-	struct uart_port *the_port;
-	struct ioc4_port *port;
-	struct ioc4_soft *soft;
-
-	/* If serial driver did not attach, don't try to detach */
-	control = idd->idd_serial_data;
-	if (!control)
-		return 0;
-
-	for (port_num = 0; port_num < IOC4_NUM_SERIAL_PORTS; port_num++) {
-		for (port_type = UART_PORT_MIN;
-					port_type < UART_PORT_COUNT;
-					port_type++) {
-			the_port = &control->ic_port[port_num].icp_uart_port
-							[port_type];
-			if (the_port) {
-				switch (port_type) {
-				case UART_PORT_RS422:
-					uart_remove_one_port(&ioc4_uart_rs422,
-							the_port);
-					break;
-				default:
-				case UART_PORT_RS232:
-					uart_remove_one_port(&ioc4_uart_rs232,
-							the_port);
-					break;
-				}
-			}
-		}
-		port = control->ic_port[port_num].icp_port;
-		/* we allocate in pairs */
-		if (!(port_num & 1) && port) {
-			pci_free_consistent(port->ip_pdev,
-					TOTAL_RING_BUF_SIZE,
-					port->ip_cpu_ringbuf,
-					port->ip_dma_ringbuf);
-			kfree(port);
-		}
-	}
-	soft = control->ic_soft;
-	if (soft) {
-		free_irq(control->ic_irq, soft);
-		if (soft->is_ioc4_serial_addr) {
-			iounmap(soft->is_ioc4_serial_addr);
-			release_mem_region((unsigned long)
-			     soft->is_ioc4_serial_addr,
-				sizeof(struct ioc4_serial));
-		}
-		kfree(soft);
-	}
-	kfree(control);
-	idd->idd_serial_data = NULL;
-
-	return 0;
-}
-
-
-/**
- * ioc4_serial_core_attach_rs232 - register with serial core
- *		This is done during pci probing
- * @pdev: handle for this card
- */
-static inline int
-ioc4_serial_core_attach(struct pci_dev *pdev, int port_type)
-{
-	struct ioc4_port *port;
-	struct uart_port *the_port;
-	struct ioc4_driver_data *idd = pci_get_drvdata(pdev);
-	struct ioc4_control *control = idd->idd_serial_data;
-	int port_num;
-	int port_type_idx;
-	struct uart_driver *u_driver;
-
-
-	DPRINT_CONFIG(("%s: attach pdev 0x%p - control 0x%p\n",
-			__func__, pdev, (void *)control));
-
-	if (!control)
-		return -ENODEV;
-
-	port_type_idx = (port_type == PROTO_RS232) ? UART_PORT_RS232
-						: UART_PORT_RS422;
-
-	u_driver = (port_type == PROTO_RS232)	? &ioc4_uart_rs232
-						: &ioc4_uart_rs422;
-
-	/* once around for each port on this card */
-	for (port_num = 0; port_num < IOC4_NUM_SERIAL_PORTS; port_num++) {
-		the_port = &control->ic_port[port_num].icp_uart_port
-							[port_type_idx];
-		port = control->ic_port[port_num].icp_port;
-		port->ip_all_ports[port_type_idx] = the_port;
-
-		DPRINT_CONFIG(("%s: attach the_port 0x%p / port 0x%p : type %s\n",
-				__func__, (void *)the_port,
-				(void *)port,
-				port_type == PROTO_RS232 ? "rs232" : "rs422"));
-
-		/* membase, iobase and mapbase just need to be non-0 */
-		the_port->membase = (unsigned char __iomem *)1;
-		the_port->iobase = (pdev->bus->number << 16) |  port_num;
-		the_port->line = (Num_of_ioc4_cards << 2) | port_num;
-		the_port->mapbase = port_type;
-		the_port->type = PORT_16550A;
-		the_port->fifosize = IOC4_FIFO_CHARS;
-		the_port->ops = &ioc4_ops;
-		the_port->irq = control->ic_irq;
-		the_port->dev = &pdev->dev;
-		spin_lock_init(&the_port->lock);
-		if (uart_add_one_port(u_driver, the_port) < 0) {
-			printk(KERN_WARNING
-		           "%s: unable to add port %d bus %d\n",
-			       __func__, the_port->line, pdev->bus->number);
-		} else {
-			DPRINT_CONFIG(
-			    ("IOC4 serial port %d irq = %d, bus %d\n",
-			       the_port->line, the_port->irq, pdev->bus->number));
-		}
-	}
-	return 0;
-}
-
-/**
- * ioc4_serial_attach_one - register attach function
- *		called per card found from IOC4 master module.
- * @idd: Master module data for this IOC4
- */
-static int
-ioc4_serial_attach_one(struct ioc4_driver_data *idd)
-{
-	unsigned long tmp_addr1;
-	struct ioc4_serial __iomem *serial;
-	struct ioc4_soft *soft;
-	struct ioc4_control *control;
-	int ret = 0;
-
-
-	DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __func__, idd->idd_pdev,
-							idd->idd_pci_id));
-
-	/* PCI-RT does not bring out serial connections.
-	 * Do not attach to this particular IOC4.
-	 */
-	if (idd->idd_variant == IOC4_VARIANT_PCI_RT)
-		return 0;
-
-	/* request serial registers */
-	tmp_addr1 = idd->idd_bar0 + IOC4_SERIAL_OFFSET;
-
-	if (!request_mem_region(tmp_addr1, sizeof(struct ioc4_serial),
-					"sioc4_uart")) {
-		printk(KERN_WARNING
-			"ioc4 (%p): unable to get request region for "
-				"uart space\n", (void *)idd->idd_pdev);
-		ret = -ENODEV;
-		goto out1;
-	}
-	serial = ioremap(tmp_addr1, sizeof(struct ioc4_serial));
-	if (!serial) {
-		printk(KERN_WARNING
-			 "ioc4 (%p) : unable to remap ioc4 serial register\n",
-				(void *)idd->idd_pdev);
-		ret = -ENODEV;
-		goto out2;
-	}
-	DPRINT_CONFIG(("%s : mem 0x%p, serial 0x%p\n",
-				__func__, (void *)idd->idd_misc_regs,
-				(void *)serial));
-
-	/* Get memory for the new card */
-	control = kzalloc(sizeof(struct ioc4_control), GFP_KERNEL);
-
-	if (!control) {
-		printk(KERN_WARNING "ioc4_attach_one"
-		       ": unable to get memory for the IOC4\n");
-		ret = -ENOMEM;
-		goto out2;
-	}
-	idd->idd_serial_data = control;
-
-	/* Allocate the soft structure */
-	soft = kzalloc(sizeof(struct ioc4_soft), GFP_KERNEL);
-	if (!soft) {
-		printk(KERN_WARNING
-		       "ioc4 (%p): unable to get memory for the soft struct\n",
-		       (void *)idd->idd_pdev);
-		ret = -ENOMEM;
-		goto out3;
-	}
-
-	spin_lock_init(&soft->is_ir_lock);
-	soft->is_ioc4_misc_addr = idd->idd_misc_regs;
-	soft->is_ioc4_serial_addr = serial;
-
-	/* Init the IOC4 */
-	writel(0xf << IOC4_SIO_CR_CMD_PULSE_SHIFT,
-	       &idd->idd_misc_regs->sio_cr.raw);
-
-	/* Enable serial port mode select generic PIO pins as outputs */
-	writel(IOC4_GPCR_UART0_MODESEL | IOC4_GPCR_UART1_MODESEL
-		| IOC4_GPCR_UART2_MODESEL | IOC4_GPCR_UART3_MODESEL,
-		&idd->idd_misc_regs->gpcr_s.raw);
-
-	/* Clear and disable all serial interrupts */
-	write_ireg(soft, ~0, IOC4_W_IEC, IOC4_SIO_INTR_TYPE);
-	writel(~0, &idd->idd_misc_regs->sio_ir.raw);
-	write_ireg(soft, IOC4_OTHER_IR_SER_MEMERR, IOC4_W_IEC,
-		   IOC4_OTHER_INTR_TYPE);
-	writel(IOC4_OTHER_IR_SER_MEMERR, &idd->idd_misc_regs->other_ir.raw);
-	control->ic_soft = soft;
-
-	/* Hook up interrupt handler */
-	if (!request_irq(idd->idd_pdev->irq, ioc4_intr, IRQF_SHARED,
-				"sgi-ioc4serial", soft)) {
-		control->ic_irq = idd->idd_pdev->irq;
-	} else {
-		printk(KERN_WARNING
-		    "%s : request_irq fails for IRQ 0x%x\n ",
-			__func__, idd->idd_pdev->irq);
-	}
-	ret = ioc4_attach_local(idd);
-	if (ret)
-		goto out4;
-
-	/* register port with the serial core - 1 rs232, 1 rs422 */
-
-	ret = ioc4_serial_core_attach(idd->idd_pdev, PROTO_RS232);
-	if (ret)
-		goto out4;
-
-	ret = ioc4_serial_core_attach(idd->idd_pdev, PROTO_RS422);
-	if (ret)
-		goto out5;
-
-	Num_of_ioc4_cards++;
-
-	return ret;
-
-	/* error exits that give back resources */
-out5:
-	ioc4_serial_remove_one(idd);
-	return ret;
-out4:
-	kfree(soft);
-out3:
-	kfree(control);
-out2:
-	if (serial)
-		iounmap(serial);
-	release_mem_region(tmp_addr1, sizeof(struct ioc4_serial));
-out1:
-
-	return ret;
-}
-
-
-static struct ioc4_submodule ioc4_serial_submodule = {
-	.is_name = "IOC4_serial",
-	.is_owner = THIS_MODULE,
-	.is_probe = ioc4_serial_attach_one,
-	.is_remove = ioc4_serial_remove_one,
-};
-
-/**
- * ioc4_serial_init - module init
- */
-static int __init ioc4_serial_init(void)
-{
-	int ret;
-
-	/* register with serial core */
-	if ((ret = uart_register_driver(&ioc4_uart_rs232)) < 0) {
-		printk(KERN_WARNING
-			"%s: Couldn't register rs232 IOC4 serial driver\n",
-			__func__);
-		goto out;
-	}
-	if ((ret = uart_register_driver(&ioc4_uart_rs422)) < 0) {
-		printk(KERN_WARNING
-			"%s: Couldn't register rs422 IOC4 serial driver\n",
-			__func__);
-		goto out_uart_rs232;
-	}
-
-	/* register with IOC4 main module */
-	ret = ioc4_register_submodule(&ioc4_serial_submodule);
-	if (ret)
-		goto out_uart_rs422;
-	return 0;
-
-out_uart_rs422:
-	uart_unregister_driver(&ioc4_uart_rs422);
-out_uart_rs232:
-	uart_unregister_driver(&ioc4_uart_rs232);
-out:
-	return ret;
-}
-
-static void __exit ioc4_serial_exit(void)
-{
-	ioc4_unregister_submodule(&ioc4_serial_submodule);
-	uart_unregister_driver(&ioc4_uart_rs232);
-	uart_unregister_driver(&ioc4_uart_rs422);
-}
-
-late_initcall(ioc4_serial_init); /* Call only after tty init is done */
-module_exit(ioc4_serial_exit);
-
-MODULE_AUTHOR("Pat Gefre - Silicon Graphics Inc. (SGI) <pfg@sgi.com>");
-MODULE_DESCRIPTION("Serial PCI driver module for SGI IOC4 Base-IO Card");
-MODULE_LICENSE("GPL");
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 08/28] tty/serial: remove the ioc3_serial driver
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (6 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 07/28] tty/serial: remove the ioc4_serial driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 09/28] char/mspec: remove SGI SN2 support Christoph Hellwig
                   ` (18 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 MAINTAINERS                           |    6 -
 arch/ia64/configs/gensparse_defconfig |    1 -
 drivers/tty/serial/Kconfig            |    8 -
 drivers/tty/serial/Makefile           |    1 -
 drivers/tty/serial/ioc3_serial.c      | 2195 -------------------------
 5 files changed, 2211 deletions(-)
 delete mode 100644 drivers/tty/serial/ioc3_serial.c

diff --git a/MAINTAINERS b/MAINTAINERS
index e81e60bd7c26..4804c03ac7ba 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8400,12 +8400,6 @@ L:	linux-mips@vger.kernel.org
 S:	Maintained
 F:	drivers/net/ethernet/sgi/ioc3-eth.c
 
-IOC3 SERIAL DRIVER
-M:	Pat Gefre <pfg@sgi.com>
-L:	linux-serial@vger.kernel.org
-S:	Maintained
-F:	drivers/tty/serial/ioc3_serial.c
-
 IOMAP FILESYSTEM LIBRARY
 M:	Christoph Hellwig <hch@infradead.org>
 M:	Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 6e450a4fc93e..d82d07d060d6 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -83,7 +83,6 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=6
 CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_SHARE_IRQ=y
-CONFIG_SERIAL_SGI_IOC3=y
 # CONFIG_HW_RANDOM is not set
 CONFIG_EFI_RTC=y
 CONFIG_RAW_DRIVER=m
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index d33bd894b9f2..2f631501c75f 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -972,14 +972,6 @@ config SERIAL_JSM
 	  To compile this driver as a module, choose M here: the
 	  module will be called jsm.
 
-config SERIAL_SGI_IOC3
-	tristate "SGI Altix IOC3 serial support"
-	depends on (IA64_GENERIC || IA64_SGI_SN2) && SGI_IOC3
-	select SERIAL_CORE
-	help
-	  If you have an SGI Altix with an IOC3 serial card,
-	  say Y or M.  Otherwise, say N.
-
 config SERIAL_MSM
 	tristate "MSM on-chip serial port support"
 	depends on ARCH_QCOM
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index df8f9a8f7651..d2f44879384e 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -52,7 +52,6 @@ obj-$(CONFIG_SERIAL_SC16IS7XX_CORE) += sc16is7xx.o
 obj-$(CONFIG_SERIAL_JSM) += jsm/
 obj-$(CONFIG_SERIAL_TXX9) += serial_txx9.o
 obj-$(CONFIG_SERIAL_VR41XX) += vr41xx_siu.o
-obj-$(CONFIG_SERIAL_SGI_IOC3) += ioc3_serial.o
 obj-$(CONFIG_SERIAL_ATMEL) += atmel_serial.o
 obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o
 obj-$(CONFIG_SERIAL_MSM) += msm_serial.o
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
deleted file mode 100644
index d8a1cdd6a53d..000000000000
--- a/drivers/tty/serial/ioc3_serial.c
+++ /dev/null
@@ -1,2195 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2005 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-/*
- * This file contains a module version of the ioc3 serial driver. This
- * includes all the support functions needed (support functions, etc.)
- * and the serial driver itself.
- */
-#include <linux/errno.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-#include <linux/circ_buf.h>
-#include <linux/serial_reg.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/serial_core.h>
-#include <linux/ioc3.h>
-#include <linux/slab.h>
-
-/*
- * Interesting things about the ioc3
- */
-
-#define LOGICAL_PORTS		2	/* rs232(0) and rs422(1) */
-#define PORTS_PER_CARD		2
-#define LOGICAL_PORTS_PER_CARD (PORTS_PER_CARD * LOGICAL_PORTS)
-#define MAX_CARDS		8
-#define MAX_LOGICAL_PORTS	(LOGICAL_PORTS_PER_CARD * MAX_CARDS)
-
-/* determine given the sio_ir what port it applies to */
-#define GET_PORT_FROM_SIO_IR(_x)	(_x & SIO_IR_SA) ? 0 : 1
-
-
-/*
- * we have 2 logical ports (rs232, rs422) for each physical port
- * evens are rs232, odds are rs422
- */
-#define GET_PHYSICAL_PORT(_x)	((_x) >> 1)
-#define GET_LOGICAL_PORT(_x)	((_x) & 1)
-#define IS_PHYSICAL_PORT(_x)	!((_x) & 1)
-#define IS_RS232(_x)		!((_x) & 1)
-
-static unsigned int Num_of_ioc3_cards;
-static unsigned int Submodule_slot;
-
-/* defining this will get you LOTS of great debug info */
-//#define DEBUG_INTERRUPTS
-#define DPRINT_CONFIG(_x...)	;
-//#define DPRINT_CONFIG(_x...)  printk _x
-#define NOT_PROGRESS()	;
-//#define NOT_PROGRESS()	printk("%s : fails %d\n", __func__, __LINE__)
-
-/* number of characters we want to transmit to the lower level at a time */
-#define MAX_CHARS		256
-#define FIFO_SIZE		(MAX_CHARS-1)	/* it's a uchar */
-
-/* Device name we're using */
-#define DEVICE_NAME		"ttySIOC"
-#define DEVICE_MAJOR		204
-#define DEVICE_MINOR		116
-
-/* flags for next_char_state */
-#define NCS_BREAK		0x1
-#define NCS_PARITY		0x2
-#define NCS_FRAMING		0x4
-#define NCS_OVERRUN		0x8
-
-/* cause we need SOME parameters ... */
-#define MIN_BAUD_SUPPORTED	1200
-#define MAX_BAUD_SUPPORTED	115200
-
-/* protocol types supported */
-#define PROTO_RS232		0
-#define PROTO_RS422		1
-
-/* Notification types */
-#define N_DATA_READY		0x01
-#define N_OUTPUT_LOWAT		0x02
-#define N_BREAK			0x04
-#define N_PARITY_ERROR		0x08
-#define N_FRAMING_ERROR		0x10
-#define N_OVERRUN_ERROR		0x20
-#define N_DDCD			0x40
-#define N_DCTS			0x80
-
-#define N_ALL_INPUT		(N_DATA_READY | N_BREAK			   \
-					| N_PARITY_ERROR | N_FRAMING_ERROR \
-					| N_OVERRUN_ERROR | N_DDCD | N_DCTS)
-
-#define N_ALL_OUTPUT		N_OUTPUT_LOWAT
-
-#define N_ALL_ERRORS		(N_PARITY_ERROR | N_FRAMING_ERROR \
-						| N_OVERRUN_ERROR)
-
-#define N_ALL			(N_DATA_READY | N_OUTPUT_LOWAT | N_BREAK    \
-					| N_PARITY_ERROR | N_FRAMING_ERROR  \
-					| N_OVERRUN_ERROR | N_DDCD | N_DCTS)
-
-#define SER_CLK_SPEED(prediv)	((22000000 << 1) / prediv)
-#define SER_DIVISOR(x, clk)	(((clk) + (x) * 8) / ((x) * 16))
-#define DIVISOR_TO_BAUD(div, clk) ((clk) / 16 / (div))
-
-/* Some masks */
-#define LCR_MASK_BITS_CHAR	(UART_LCR_WLEN5 | UART_LCR_WLEN6 \
-					| UART_LCR_WLEN7 | UART_LCR_WLEN8)
-#define LCR_MASK_STOP_BITS	(UART_LCR_STOP)
-
-#define PENDING(_a, _p)		(readl(&(_p)->vma->sio_ir) & (_a)->ic_enable)
-
-#define RING_BUF_SIZE		4096
-#define BUF_SIZE_BIT		SBBR_L_SIZE
-#define PROD_CONS_MASK		PROD_CONS_PTR_4K
-
-#define TOTAL_RING_BUF_SIZE	(RING_BUF_SIZE * 4)
-
-/* driver specific - one per card */
-struct ioc3_card {
-	struct {
-		/* uart ports are allocated here */
-		struct uart_port icp_uart_port[LOGICAL_PORTS];
-		/* the ioc3_port used for this port */
-		struct ioc3_port *icp_port;
-	} ic_port[PORTS_PER_CARD];
-	/* currently enabled interrupts */
-	uint32_t ic_enable;
-};
-
-/* Local port info for each IOC3 serial port */
-struct ioc3_port {
-	/* handy reference material */
-	struct uart_port *ip_port;
-	struct ioc3_card *ip_card;
-	struct ioc3_driver_data *ip_idd;
-	struct ioc3_submodule *ip_is;
-
-	/* pci mem addresses for this port */
-	struct ioc3_serialregs __iomem *ip_serial_regs;
-	struct ioc3_uartregs __iomem *ip_uart_regs;
-
-	/* Ring buffer page for this port */
-	dma_addr_t ip_dma_ringbuf;
-	/* vaddr of ring buffer */
-	struct ring_buffer *ip_cpu_ringbuf;
-
-	/* Rings for this port */
-	struct ring *ip_inring;
-	struct ring *ip_outring;
-
-	/* Hook to port specific values */
-	struct port_hooks *ip_hooks;
-
-	spinlock_t ip_lock;
-
-	/* Various rx/tx parameters */
-	int ip_baud;
-	int ip_tx_lowat;
-	int ip_rx_timeout;
-
-	/* Copy of notification bits */
-	int ip_notify;
-
-	/* Shadow copies of various registers so we don't need to PIO
-	 * read them constantly
-	 */
-	uint32_t ip_sscr;
-	uint32_t ip_tx_prod;
-	uint32_t ip_rx_cons;
-	unsigned char ip_flags;
-};
-
-/* tx low water mark.  We need to notify the driver whenever tx is getting
- * close to empty so it can refill the tx buffer and keep things going.
- * Let's assume that if we interrupt 1 ms before the tx goes idle, we'll
- * have no trouble getting in more chars in time (I certainly hope so).
- */
-#define TX_LOWAT_LATENCY      1000
-#define TX_LOWAT_HZ          (1000000 / TX_LOWAT_LATENCY)
-#define TX_LOWAT_CHARS(baud) (baud / 10 / TX_LOWAT_HZ)
-
-/* Flags per port */
-#define INPUT_HIGH		0x01
-	/* used to signify that we have turned off the rx_high
-	 * temporarily - we need to drain the fifo and don't
-	 * want to get blasted with interrupts.
-	 */
-#define DCD_ON			0x02
-	/* DCD state is on */
-#define LOWAT_WRITTEN		0x04
-#define READ_ABORTED		0x08
-	/* the read was aborted - used to avaoid infinate looping
-	 * in the interrupt handler
-	 */
-#define INPUT_ENABLE		0x10
-
-/* Since each port has different register offsets and bitmasks
- * for everything, we'll store those that we need in tables so we
- * don't have to be constantly checking the port we are dealing with.
- */
-struct port_hooks {
-	uint32_t intr_delta_dcd;
-	uint32_t intr_delta_cts;
-	uint32_t intr_tx_mt;
-	uint32_t intr_rx_timer;
-	uint32_t intr_rx_high;
-	uint32_t intr_tx_explicit;
-	uint32_t intr_clear;
-	uint32_t intr_all;
-	char rs422_select_pin;
-};
-
-static struct port_hooks hooks_array[PORTS_PER_CARD] = {
-	/* values for port A */
-	{
-	.intr_delta_dcd = SIO_IR_SA_DELTA_DCD,
-	.intr_delta_cts = SIO_IR_SA_DELTA_CTS,
-	.intr_tx_mt = SIO_IR_SA_TX_MT,
-	.intr_rx_timer = SIO_IR_SA_RX_TIMER,
-	.intr_rx_high = SIO_IR_SA_RX_HIGH,
-	.intr_tx_explicit = SIO_IR_SA_TX_EXPLICIT,
-	.intr_clear = (SIO_IR_SA_TX_MT | SIO_IR_SA_RX_FULL
-				| SIO_IR_SA_RX_HIGH
-				| SIO_IR_SA_RX_TIMER
-				| SIO_IR_SA_DELTA_DCD
-				| SIO_IR_SA_DELTA_CTS
-				| SIO_IR_SA_INT
-				| SIO_IR_SA_TX_EXPLICIT
-				| SIO_IR_SA_MEMERR),
-	.intr_all =  SIO_IR_SA,
-	.rs422_select_pin = GPPR_UARTA_MODESEL_PIN,
-	 },
-
-	/* values for port B */
-	{
-	.intr_delta_dcd = SIO_IR_SB_DELTA_DCD,
-	.intr_delta_cts = SIO_IR_SB_DELTA_CTS,
-	.intr_tx_mt = SIO_IR_SB_TX_MT,
-	.intr_rx_timer = SIO_IR_SB_RX_TIMER,
-	.intr_rx_high = SIO_IR_SB_RX_HIGH,
-	.intr_tx_explicit = SIO_IR_SB_TX_EXPLICIT,
-	.intr_clear = (SIO_IR_SB_TX_MT | SIO_IR_SB_RX_FULL
-				| SIO_IR_SB_RX_HIGH
-				| SIO_IR_SB_RX_TIMER
-				| SIO_IR_SB_DELTA_DCD
-				| SIO_IR_SB_DELTA_CTS
-				| SIO_IR_SB_INT
-				| SIO_IR_SB_TX_EXPLICIT
-				| SIO_IR_SB_MEMERR),
-	.intr_all = SIO_IR_SB,
-	.rs422_select_pin = GPPR_UARTB_MODESEL_PIN,
-	 }
-};
-
-struct ring_entry {
-	union {
-		struct {
-			uint32_t alldata;
-			uint32_t allsc;
-		} all;
-		struct {
-			char data[4];	/* data bytes */
-			char sc[4];	/* status/control */
-		} s;
-	} u;
-};
-
-/* Test the valid bits in any of the 4 sc chars using "allsc" member */
-#define RING_ANY_VALID \
-	((uint32_t)(RXSB_MODEM_VALID | RXSB_DATA_VALID) * 0x01010101)
-
-#define ring_sc		u.s.sc
-#define ring_data	u.s.data
-#define ring_allsc	u.all.allsc
-
-/* Number of entries per ring buffer. */
-#define ENTRIES_PER_RING (RING_BUF_SIZE / (int) sizeof(struct ring_entry))
-
-/* An individual ring */
-struct ring {
-	struct ring_entry entries[ENTRIES_PER_RING];
-};
-
-/* The whole enchilada */
-struct ring_buffer {
-	struct ring TX_A;
-	struct ring RX_A;
-	struct ring TX_B;
-	struct ring RX_B;
-};
-
-/* Get a ring from a port struct */
-#define RING(_p, _wh)	&(((struct ring_buffer *)((_p)->ip_cpu_ringbuf))->_wh)
-
-/* for Infinite loop detection  */
-#define MAXITER		10000000
-
-
-/**
- * set_baud - Baud rate setting code
- * @port: port to set
- * @baud: baud rate to use
- */
-static int set_baud(struct ioc3_port *port, int baud)
-{
-	int divisor;
-	int actual_baud;
-	int diff;
-	int lcr, prediv;
-	struct ioc3_uartregs __iomem *uart;
-
-	for (prediv = 6; prediv < 64; prediv++) {
-		divisor = SER_DIVISOR(baud, SER_CLK_SPEED(prediv));
-		if (!divisor)
-			continue;	/* invalid divisor */
-		actual_baud = DIVISOR_TO_BAUD(divisor, SER_CLK_SPEED(prediv));
-
-		diff = actual_baud - baud;
-		if (diff < 0)
-			diff = -diff;
-
-		/* if we're within 1% we've found a match */
-		if (diff * 100 <= actual_baud)
-			break;
-	}
-
-	/* if the above loop completed, we didn't match
-	 * the baud rate.  give up.
-	 */
-	if (prediv == 64) {
-		NOT_PROGRESS();
-		return 1;
-	}
-
-	uart = port->ip_uart_regs;
-	lcr = readb(&uart->iu_lcr);
-
-	writeb(lcr | UART_LCR_DLAB, &uart->iu_lcr);
-	writeb((unsigned char)divisor, &uart->iu_dll);
-	writeb((unsigned char)(divisor >> 8), &uart->iu_dlm);
-	writeb((unsigned char)prediv, &uart->iu_scr);
-	writeb((unsigned char)lcr, &uart->iu_lcr);
-
-	return 0;
-}
-
-/**
- * get_ioc3_port - given a uart port, return the control structure
- * @the_port: uart port to find
- */
-static struct ioc3_port *get_ioc3_port(struct uart_port *the_port)
-{
-	struct ioc3_driver_data *idd = dev_get_drvdata(the_port->dev);
-	struct ioc3_card *card_ptr = idd->data[Submodule_slot];
-	int ii, jj;
-
-	if (!card_ptr) {
-		NOT_PROGRESS();
-		return NULL;
-	}
-	for (ii = 0; ii < PORTS_PER_CARD; ii++) {
-		for (jj = 0; jj < LOGICAL_PORTS; jj++) {
-			if (the_port == &card_ptr->ic_port[ii].icp_uart_port[jj])
-				return card_ptr->ic_port[ii].icp_port;
-		}
-	}
-	NOT_PROGRESS();
-	return NULL;
-}
-
-/**
- * port_init - Initialize the sio and ioc3 hardware for a given port
- *			called per port from attach...
- * @port: port to initialize
- */
-static inline int port_init(struct ioc3_port *port)
-{
-	uint32_t sio_cr;
-	struct port_hooks *hooks = port->ip_hooks;
-	struct ioc3_uartregs __iomem *uart;
-	int reset_loop_counter = 0xfffff;
-	struct ioc3_driver_data *idd = port->ip_idd;
-
-	/* Idle the IOC3 serial interface */
-	writel(SSCR_RESET, &port->ip_serial_regs->sscr);
-
-	/* Wait until any pending bus activity for this port has ceased */
-	do {
-		sio_cr = readl(&idd->vma->sio_cr);
-		if (reset_loop_counter-- <= 0) {
-			printk(KERN_WARNING
-			       "IOC3 unable to come out of reset"
-				" scr 0x%x\n", sio_cr);
-			return -1;
-		}
-	} while (!(sio_cr & SIO_CR_ARB_DIAG_IDLE) &&
-	       (((sio_cr &= SIO_CR_ARB_DIAG) == SIO_CR_ARB_DIAG_TXA)
-		|| sio_cr == SIO_CR_ARB_DIAG_TXB
-		|| sio_cr == SIO_CR_ARB_DIAG_RXA
-		|| sio_cr == SIO_CR_ARB_DIAG_RXB));
-
-	/* Finish reset sequence */
-	writel(0, &port->ip_serial_regs->sscr);
-
-	/* Once RESET is done, reload cached tx_prod and rx_cons values
-	 * and set rings to empty by making prod == cons
-	 */
-	port->ip_tx_prod = readl(&port->ip_serial_regs->stcir) & PROD_CONS_MASK;
-	writel(port->ip_tx_prod, &port->ip_serial_regs->stpir);
-	port->ip_rx_cons = readl(&port->ip_serial_regs->srpir) & PROD_CONS_MASK;
-	writel(port->ip_rx_cons | SRCIR_ARM, &port->ip_serial_regs->srcir);
-
-	/* Disable interrupts for this 16550 */
-	uart = port->ip_uart_regs;
-	writeb(0, &uart->iu_lcr);
-	writeb(0, &uart->iu_ier);
-
-	/* Set the default baud */
-	set_baud(port, port->ip_baud);
-
-	/* Set line control to 8 bits no parity */
-	writeb(UART_LCR_WLEN8 | 0, &uart->iu_lcr);
-	/* UART_LCR_STOP == 1 stop */
-
-	/* Enable the FIFOs */
-	writeb(UART_FCR_ENABLE_FIFO, &uart->iu_fcr);
-	/* then reset 16550 FIFOs */
-	writeb(UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
-	       &uart->iu_fcr);
-
-	/* Clear modem control register */
-	writeb(0, &uart->iu_mcr);
-
-	/* Clear deltas in modem status register */
-	writel(0, &port->ip_serial_regs->shadow);
-
-	/* Only do this once per port pair */
-	if (port->ip_hooks == &hooks_array[0]) {
-		unsigned long ring_pci_addr;
-		uint32_t __iomem *sbbr_l, *sbbr_h;
-
-		sbbr_l = &idd->vma->sbbr_l;
-		sbbr_h = &idd->vma->sbbr_h;
-		ring_pci_addr = (unsigned long __iomem)port->ip_dma_ringbuf;
-		DPRINT_CONFIG(("%s: ring_pci_addr 0x%p\n",
-			       __func__, (void *)ring_pci_addr));
-
-		writel((unsigned int)((uint64_t) ring_pci_addr >> 32), sbbr_h);
-		writel((unsigned int)ring_pci_addr | BUF_SIZE_BIT, sbbr_l);
-	}
-
-	/* Set the receive timeout value to 10 msec */
-	writel(SRTR_HZ / 100, &port->ip_serial_regs->srtr);
-
-	/* Set rx threshold, enable DMA */
-	/* Set high water mark at 3/4 of full ring */
-	port->ip_sscr = (ENTRIES_PER_RING * 3 / 4);
-
-	/* uart experiences pauses at high baud rate reducing actual
-	 * throughput by 10% or so unless we enable high speed polling
-	 * XXX when this hardware bug is resolved we should revert to
-	 * normal polling speed
-	 */
-	port->ip_sscr |= SSCR_HIGH_SPD;
-
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-
-	/* Disable and clear all serial related interrupt bits */
-	port->ip_card->ic_enable &= ~hooks->intr_clear;
-	ioc3_disable(port->ip_is, idd, hooks->intr_clear);
-	ioc3_ack(port->ip_is, idd, hooks->intr_clear);
-	return 0;
-}
-
-/**
- * enable_intrs - enable interrupts
- * @port: port to enable
- * @mask: mask to use
- */
-static void enable_intrs(struct ioc3_port *port, uint32_t mask)
-{
-	if ((port->ip_card->ic_enable & mask) != mask) {
-		port->ip_card->ic_enable |= mask;
-		ioc3_enable(port->ip_is, port->ip_idd, mask);
-	}
-}
-
-/**
- * local_open - local open a port
- * @port: port to open
- */
-static inline int local_open(struct ioc3_port *port)
-{
-	int spiniter = 0;
-
-	port->ip_flags = INPUT_ENABLE;
-
-	/* Pause the DMA interface if necessary */
-	if (port->ip_sscr & SSCR_DMA_EN) {
-		writel(port->ip_sscr | SSCR_DMA_PAUSE,
-		       &port->ip_serial_regs->sscr);
-		while ((readl(&port->ip_serial_regs->sscr)
-			& SSCR_PAUSE_STATE) == 0) {
-			spiniter++;
-			if (spiniter > MAXITER) {
-				NOT_PROGRESS();
-				return -1;
-			}
-		}
-	}
-
-	/* Reset the input fifo.  If the uart received chars while the port
-	 * was closed and DMA is not enabled, the uart may have a bunch of
-	 * chars hanging around in its rx fifo which will not be discarded
-	 * by rclr in the upper layer. We must get rid of them here.
-	 */
-	writeb(UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR,
-	       &port->ip_uart_regs->iu_fcr);
-
-	writeb(UART_LCR_WLEN8, &port->ip_uart_regs->iu_lcr);
-	/* UART_LCR_STOP == 1 stop */
-
-	/* Re-enable DMA, set default threshold to intr whenever there is
-	 * data available.
-	 */
-	port->ip_sscr &= ~SSCR_RX_THRESHOLD;
-	port->ip_sscr |= 1;	/* default threshold */
-
-	/* Plug in the new sscr.  This implicitly clears the DMA_PAUSE
-	 * flag if it was set above
-	 */
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	port->ip_tx_lowat = 1;
-	return 0;
-}
-
-/**
- * set_rx_timeout - Set rx timeout and threshold values.
- * @port: port to use
- * @timeout: timeout value in ticks
- */
-static inline int set_rx_timeout(struct ioc3_port *port, int timeout)
-{
-	int threshold;
-
-	port->ip_rx_timeout = timeout;
-
-	/* Timeout is in ticks.  Let's figure out how many chars we
-	 * can receive at the current baud rate in that interval
-	 * and set the rx threshold to that amount.  There are 4 chars
-	 * per ring entry, so we'll divide the number of chars that will
-	 * arrive in timeout by 4.
-	 * So .... timeout * baud / 10 / HZ / 4, with HZ = 100.
-	 */
-	threshold = timeout * port->ip_baud / 4000;
-	if (threshold == 0)
-		threshold = 1;	/* otherwise we'll intr all the time! */
-
-	if ((unsigned)threshold > (unsigned)SSCR_RX_THRESHOLD)
-		return 1;
-
-	port->ip_sscr &= ~SSCR_RX_THRESHOLD;
-	port->ip_sscr |= threshold;
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-
-	/* Now set the rx timeout to the given value
-	 * again timeout * SRTR_HZ / HZ
-	 */
-	timeout = timeout * SRTR_HZ / 100;
-	if (timeout > SRTR_CNT)
-		timeout = SRTR_CNT;
-	writel(timeout, &port->ip_serial_regs->srtr);
-	return 0;
-}
-
-/**
- * config_port - config the hardware
- * @port: port to config
- * @baud: baud rate for the port
- * @byte_size: data size
- * @stop_bits: number of stop bits
- * @parenb: parity enable ?
- * @parodd: odd parity ?
- */
-static inline int
-config_port(struct ioc3_port *port,
-	    int baud, int byte_size, int stop_bits, int parenb, int parodd)
-{
-	char lcr, sizebits;
-	int spiniter = 0;
-
-	DPRINT_CONFIG(("%s: line %d baud %d byte_size %d stop %d parenb %d "
-			"parodd %d\n",
-		       __func__, ((struct uart_port *)port->ip_port)->line,
-			baud, byte_size, stop_bits, parenb, parodd));
-
-	if (set_baud(port, baud))
-		return 1;
-
-	switch (byte_size) {
-	case 5:
-		sizebits = UART_LCR_WLEN5;
-		break;
-	case 6:
-		sizebits = UART_LCR_WLEN6;
-		break;
-	case 7:
-		sizebits = UART_LCR_WLEN7;
-		break;
-	case 8:
-		sizebits = UART_LCR_WLEN8;
-		break;
-	default:
-		return 1;
-	}
-
-	/* Pause the DMA interface if necessary */
-	if (port->ip_sscr & SSCR_DMA_EN) {
-		writel(port->ip_sscr | SSCR_DMA_PAUSE,
-		       &port->ip_serial_regs->sscr);
-		while ((readl(&port->ip_serial_regs->sscr)
-			& SSCR_PAUSE_STATE) == 0) {
-			spiniter++;
-			if (spiniter > MAXITER)
-				return -1;
-		}
-	}
-
-	/* Clear relevant fields in lcr */
-	lcr = readb(&port->ip_uart_regs->iu_lcr);
-	lcr &= ~(LCR_MASK_BITS_CHAR | UART_LCR_EPAR |
-		 UART_LCR_PARITY | LCR_MASK_STOP_BITS);
-
-	/* Set byte size in lcr */
-	lcr |= sizebits;
-
-	/* Set parity */
-	if (parenb) {
-		lcr |= UART_LCR_PARITY;
-		if (!parodd)
-			lcr |= UART_LCR_EPAR;
-	}
-
-	/* Set stop bits */
-	if (stop_bits)
-		lcr |= UART_LCR_STOP /* 2 stop bits */ ;
-
-	writeb(lcr, &port->ip_uart_regs->iu_lcr);
-
-	/* Re-enable the DMA interface if necessary */
-	if (port->ip_sscr & SSCR_DMA_EN) {
-		writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	}
-	port->ip_baud = baud;
-
-	/* When we get within this number of ring entries of filling the
-	 * entire ring on tx, place an EXPLICIT intr to generate a lowat
-	 * notification when output has drained.
-	 */
-	port->ip_tx_lowat = (TX_LOWAT_CHARS(baud) + 3) / 4;
-	if (port->ip_tx_lowat == 0)
-		port->ip_tx_lowat = 1;
-
-	set_rx_timeout(port, 2);
-	return 0;
-}
-
-/**
- * do_write - Write bytes to the port.  Returns the number of bytes
- *			actually written. Called from transmit_chars
- * @port: port to use
- * @buf: the stuff to write
- * @len: how many bytes in 'buf'
- */
-static inline int do_write(struct ioc3_port *port, char *buf, int len)
-{
-	int prod_ptr, cons_ptr, total = 0;
-	struct ring *outring;
-	struct ring_entry *entry;
-	struct port_hooks *hooks = port->ip_hooks;
-
-	BUG_ON(!(len >= 0));
-
-	prod_ptr = port->ip_tx_prod;
-	cons_ptr = readl(&port->ip_serial_regs->stcir) & PROD_CONS_MASK;
-	outring = port->ip_outring;
-
-	/* Maintain a 1-entry red-zone.  The ring buffer is full when
-	 * (cons - prod) % ring_size is 1.  Rather than do this subtraction
-	 * in the body of the loop, I'll do it now.
-	 */
-	cons_ptr = (cons_ptr - (int)sizeof(struct ring_entry)) & PROD_CONS_MASK;
-
-	/* Stuff the bytes into the output */
-	while ((prod_ptr != cons_ptr) && (len > 0)) {
-		int xx;
-
-		/* Get 4 bytes (one ring entry) at a time */
-		entry = (struct ring_entry *)((caddr_t) outring + prod_ptr);
-
-		/* Invalidate all entries */
-		entry->ring_allsc = 0;
-
-		/* Copy in some bytes */
-		for (xx = 0; (xx < 4) && (len > 0); xx++) {
-			entry->ring_data[xx] = *buf++;
-			entry->ring_sc[xx] = TXCB_VALID;
-			len--;
-			total++;
-		}
-
-		/* If we are within some small threshold of filling up the
-		 * entire ring buffer, we must place an EXPLICIT intr here
-		 * to generate a lowat interrupt in case we subsequently
-		 * really do fill up the ring and the caller goes to sleep.
-		 * No need to place more than one though.
-		 */
-		if (!(port->ip_flags & LOWAT_WRITTEN) &&
-		    ((cons_ptr - prod_ptr) & PROD_CONS_MASK)
-		    <= port->ip_tx_lowat * (int)sizeof(struct ring_entry)) {
-			port->ip_flags |= LOWAT_WRITTEN;
-			entry->ring_sc[0] |= TXCB_INT_WHEN_DONE;
-		}
-
-		/* Go on to next entry */
-		prod_ptr += sizeof(struct ring_entry);
-		prod_ptr &= PROD_CONS_MASK;
-	}
-
-	/* If we sent something, start DMA if necessary */
-	if (total > 0 && !(port->ip_sscr & SSCR_DMA_EN)) {
-		port->ip_sscr |= SSCR_DMA_EN;
-		writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	}
-
-	/* Store the new producer pointer.  If tx is disabled, we stuff the
-	 * data into the ring buffer, but we don't actually start tx.
-	 */
-	if (!uart_tx_stopped(port->ip_port)) {
-		writel(prod_ptr, &port->ip_serial_regs->stpir);
-
-		/* If we are now transmitting, enable tx_mt interrupt so we
-		 * can disable DMA if necessary when the tx finishes.
-		 */
-		if (total > 0)
-			enable_intrs(port, hooks->intr_tx_mt);
-	}
-	port->ip_tx_prod = prod_ptr;
-
-	return total;
-}
-
-/**
- * disable_intrs - disable interrupts
- * @port: port to enable
- * @mask: mask to use
- */
-static inline void disable_intrs(struct ioc3_port *port, uint32_t mask)
-{
-	if (port->ip_card->ic_enable & mask) {
-		ioc3_disable(port->ip_is, port->ip_idd, mask);
-		port->ip_card->ic_enable &= ~mask;
-	}
-}
-
-/**
- * set_notification - Modify event notification
- * @port: port to use
- * @mask: events mask
- * @set_on: set ?
- */
-static int set_notification(struct ioc3_port *port, int mask, int set_on)
-{
-	struct port_hooks *hooks = port->ip_hooks;
-	uint32_t intrbits, sscrbits;
-
-	BUG_ON(!mask);
-
-	intrbits = sscrbits = 0;
-
-	if (mask & N_DATA_READY)
-		intrbits |= (hooks->intr_rx_timer | hooks->intr_rx_high);
-	if (mask & N_OUTPUT_LOWAT)
-		intrbits |= hooks->intr_tx_explicit;
-	if (mask & N_DDCD) {
-		intrbits |= hooks->intr_delta_dcd;
-		sscrbits |= SSCR_RX_RING_DCD;
-	}
-	if (mask & N_DCTS)
-		intrbits |= hooks->intr_delta_cts;
-
-	if (set_on) {
-		enable_intrs(port, intrbits);
-		port->ip_notify |= mask;
-		port->ip_sscr |= sscrbits;
-	} else {
-		disable_intrs(port, intrbits);
-		port->ip_notify &= ~mask;
-		port->ip_sscr &= ~sscrbits;
-	}
-
-	/* We require DMA if either DATA_READY or DDCD notification is
-	 * currently requested. If neither of these is requested and
-	 * there is currently no tx in progress, DMA may be disabled.
-	 */
-	if (port->ip_notify & (N_DATA_READY | N_DDCD))
-		port->ip_sscr |= SSCR_DMA_EN;
-	else if (!(port->ip_card->ic_enable & hooks->intr_tx_mt))
-		port->ip_sscr &= ~SSCR_DMA_EN;
-
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	return 0;
-}
-
-/**
- * set_mcr - set the master control reg
- * @the_port: port to use
- * @mask1: mcr mask
- * @mask2: shadow mask
- */
-static inline int set_mcr(struct uart_port *the_port,
-			  int mask1, int mask2)
-{
-	struct ioc3_port *port = get_ioc3_port(the_port);
-	uint32_t shadow;
-	int spiniter = 0;
-	char mcr;
-
-	if (!port)
-		return -1;
-
-	/* Pause the DMA interface if necessary */
-	if (port->ip_sscr & SSCR_DMA_EN) {
-		writel(port->ip_sscr | SSCR_DMA_PAUSE,
-		       &port->ip_serial_regs->sscr);
-		while ((readl(&port->ip_serial_regs->sscr)
-			& SSCR_PAUSE_STATE) == 0) {
-			spiniter++;
-			if (spiniter > MAXITER)
-				return -1;
-		}
-	}
-	shadow = readl(&port->ip_serial_regs->shadow);
-	mcr = (shadow & 0xff000000) >> 24;
-
-	/* Set new value */
-	mcr |= mask1;
-	shadow |= mask2;
-	writeb(mcr, &port->ip_uart_regs->iu_mcr);
-	writel(shadow, &port->ip_serial_regs->shadow);
-
-	/* Re-enable the DMA interface if necessary */
-	if (port->ip_sscr & SSCR_DMA_EN) {
-		writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-	}
-	return 0;
-}
-
-/**
- * ioc3_set_proto - set the protocol for the port
- * @port: port to use
- * @proto: protocol to use
- */
-static int ioc3_set_proto(struct ioc3_port *port, int proto)
-{
-	struct port_hooks *hooks = port->ip_hooks;
-
-	switch (proto) {
-	default:
-	case PROTO_RS232:
-		/* Clear the appropriate GIO pin */
-		DPRINT_CONFIG(("%s: rs232\n", __func__));
-		writel(0, (&port->ip_idd->vma->gppr[0]
-					+ hooks->rs422_select_pin));
-		break;
-
-	case PROTO_RS422:
-		/* Set the appropriate GIO pin */
-		DPRINT_CONFIG(("%s: rs422\n", __func__));
-		writel(1, (&port->ip_idd->vma->gppr[0]
-					+ hooks->rs422_select_pin));
-		break;
-	}
-	return 0;
-}
-
-/**
- * transmit_chars - upper level write, called with the_port->lock
- * @the_port: port to write
- */
-static void transmit_chars(struct uart_port *the_port)
-{
-	int xmit_count, tail, head;
-	int result;
-	char *start;
-	struct tty_struct *tty;
-	struct ioc3_port *port = get_ioc3_port(the_port);
-	struct uart_state *state;
-
-	if (!the_port)
-		return;
-	if (!port)
-		return;
-
-	state = the_port->state;
-	tty = state->port.tty;
-
-	if (uart_circ_empty(&state->xmit) || uart_tx_stopped(the_port)) {
-		/* Nothing to do or hw stopped */
-		set_notification(port, N_ALL_OUTPUT, 0);
-		return;
-	}
-
-	head = state->xmit.head;
-	tail = state->xmit.tail;
-	start = (char *)&state->xmit.buf[tail];
-
-	/* write out all the data or until the end of the buffer */
-	xmit_count = (head < tail) ? (UART_XMIT_SIZE - tail) : (head - tail);
-	if (xmit_count > 0) {
-		result = do_write(port, start, xmit_count);
-		if (result > 0) {
-			/* booking */
-			xmit_count -= result;
-			the_port->icount.tx += result;
-			/* advance the pointers */
-			tail += result;
-			tail &= UART_XMIT_SIZE - 1;
-			state->xmit.tail = tail;
-			start = (char *)&state->xmit.buf[tail];
-		}
-	}
-	if (uart_circ_chars_pending(&state->xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(the_port);
-
-	if (uart_circ_empty(&state->xmit)) {
-		set_notification(port, N_OUTPUT_LOWAT, 0);
-	} else {
-		set_notification(port, N_OUTPUT_LOWAT, 1);
-	}
-}
-
-/**
- * ioc3_change_speed - change the speed of the port
- * @the_port: port to change
- * @new_termios: new termios settings
- * @old_termios: old termios settings
- */
-static void
-ioc3_change_speed(struct uart_port *the_port,
-		  struct ktermios *new_termios, struct ktermios *old_termios)
-{
-	struct ioc3_port *port = get_ioc3_port(the_port);
-	unsigned int cflag, iflag;
-	int baud;
-	int new_parity = 0, new_parity_enable = 0, new_stop = 0, new_data = 8;
-	struct uart_state *state = the_port->state;
-
-	cflag = new_termios->c_cflag;
-	iflag = new_termios->c_iflag;
-
-	switch (cflag & CSIZE) {
-	case CS5:
-		new_data = 5;
-		break;
-	case CS6:
-		new_data = 6;
-		break;
-	case CS7:
-		new_data = 7;
-		break;
-	case CS8:
-		new_data = 8;
-		break;
-	default:
-		/* cuz we always need a default ... */
-		new_data = 5;
-		break;
-	}
-	if (cflag & CSTOPB) {
-		new_stop = 1;
-	}
-	if (cflag & PARENB) {
-		new_parity_enable = 1;
-		if (cflag & PARODD)
-			new_parity = 1;
-	}
-	baud = uart_get_baud_rate(the_port, new_termios, old_termios,
-				  MIN_BAUD_SUPPORTED, MAX_BAUD_SUPPORTED);
-	DPRINT_CONFIG(("%s: returned baud %d for line %d\n", __func__, baud,
-				the_port->line));
-
-	if (!the_port->fifosize)
-		the_port->fifosize = FIFO_SIZE;
-	uart_update_timeout(the_port, cflag, baud);
-
-	the_port->ignore_status_mask = N_ALL_INPUT;
-
-	state->port.low_latency = 1;
-
-	if (iflag & IGNPAR)
-		the_port->ignore_status_mask &= ~(N_PARITY_ERROR
-						  | N_FRAMING_ERROR);
-	if (iflag & IGNBRK) {
-		the_port->ignore_status_mask &= ~N_BREAK;
-		if (iflag & IGNPAR)
-			the_port->ignore_status_mask &= ~N_OVERRUN_ERROR;
-	}
-	if (!(cflag & CREAD)) {
-		/* ignore everything */
-		the_port->ignore_status_mask &= ~N_DATA_READY;
-	}
-
-	if (cflag & CRTSCTS) {
-		/* enable hardware flow control */
-		port->ip_sscr |= SSCR_HFC_EN;
-	}
-	else {
-		/* disable hardware flow control */
-		port->ip_sscr &= ~SSCR_HFC_EN;
-	}
-	writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-
-	/* Set the configuration and proper notification call */
-	DPRINT_CONFIG(("%s : port 0x%p line %d cflag 0%o "
-		       "config_port(baud %d data %d stop %d penable %d "
-			" parity %d), notification 0x%x\n",
-		       __func__, (void *)port, the_port->line, cflag, baud,
-		       new_data, new_stop, new_parity_enable, new_parity,
-		       the_port->ignore_status_mask));
-
-	if ((config_port(port, baud,	/* baud */
-			 new_data,	/* byte size */
-			 new_stop,	/* stop bits */
-			 new_parity_enable,	/* set parity */
-			 new_parity)) >= 0) {	/* parity 1==odd */
-		set_notification(port, the_port->ignore_status_mask, 1);
-	}
-}
-
-/**
- * ic3_startup_local - Start up the serial port - returns >= 0 if no errors
- * @the_port: Port to operate on
- */
-static inline int ic3_startup_local(struct uart_port *the_port)
-{
-	struct ioc3_port *port;
-
-	if (!the_port) {
-		NOT_PROGRESS();
-		return -1;
-	}
-
-	port = get_ioc3_port(the_port);
-	if (!port) {
-		NOT_PROGRESS();
-		return -1;
-	}
-
-	local_open(port);
-
-	/* set the protocol */
-	ioc3_set_proto(port, IS_RS232(the_port->line) ? PROTO_RS232 :
-							PROTO_RS422);
-	return 0;
-}
-
-/*
- * ioc3_cb_output_lowat - called when the output low water mark is hit
- * @port: port to output
- */
-static void ioc3_cb_output_lowat(struct ioc3_port *port)
-{
-	unsigned long pflags;
-
-	/* the_port->lock is set on the call here */
-	if (port->ip_port) {
-		spin_lock_irqsave(&port->ip_port->lock, pflags);
-		transmit_chars(port->ip_port);
-		spin_unlock_irqrestore(&port->ip_port->lock, pflags);
-	}
-}
-
-/*
- * ioc3_cb_post_ncs - called for some basic errors
- * @port: port to use
- * @ncs: event
- */
-static void ioc3_cb_post_ncs(struct uart_port *the_port, int ncs)
-{
-	struct uart_icount *icount;
-
-	icount = &the_port->icount;
-
-	if (ncs & NCS_BREAK)
-		icount->brk++;
-	if (ncs & NCS_FRAMING)
-		icount->frame++;
-	if (ncs & NCS_OVERRUN)
-		icount->overrun++;
-	if (ncs & NCS_PARITY)
-		icount->parity++;
-}
-
-/**
- * do_read - Read in bytes from the port.  Return the number of bytes
- *			actually read.
- * @the_port: port to use
- * @buf: place to put the stuff we read
- * @len: how big 'buf' is
- */
-
-static inline int do_read(struct uart_port *the_port, char *buf, int len)
-{
-	int prod_ptr, cons_ptr, total;
-	struct ioc3_port *port = get_ioc3_port(the_port);
-	struct ring *inring;
-	struct ring_entry *entry;
-	struct port_hooks *hooks;
-	int byte_num;
-	char *sc;
-	int loop_counter;
-
-	BUG_ON(!(len >= 0));
-	BUG_ON(!port);
-	hooks = port->ip_hooks;
-
-	/* There is a nasty timing issue in the IOC3. When the rx_timer
-	 * expires or the rx_high condition arises, we take an interrupt.
-	 * At some point while servicing the interrupt, we read bytes from
-	 * the ring buffer and re-arm the rx_timer.  However the rx_timer is
-	 * not started until the first byte is received *after* it is armed,
-	 * and any bytes pending in the rx construction buffers are not drained
-	 * to memory until either there are 4 bytes available or the rx_timer
-	 * expires.  This leads to a potential situation where data is left
-	 * in the construction buffers forever - 1 to 3 bytes were received
-	 * after the interrupt was generated but before the rx_timer was
-	 * re-armed. At that point as long as no subsequent bytes are received
-	 * the timer will never be started and the bytes will remain in the
-	 * construction buffer forever.  The solution is to execute a DRAIN
-	 * command after rearming the timer.  This way any bytes received before
-	 * the DRAIN will be drained to memory, and any bytes received after
-	 * the DRAIN will start the TIMER and be drained when it expires.
-	 * Luckily, this only needs to be done when the DMA buffer is empty
-	 * since there is no requirement that this function return all
-	 * available data as long as it returns some.
-	 */
-	/* Re-arm the timer */
-
-	writel(port->ip_rx_cons | SRCIR_ARM, &port->ip_serial_regs->srcir);
-
-	prod_ptr = readl(&port->ip_serial_regs->srpir) & PROD_CONS_MASK;
-	cons_ptr = port->ip_rx_cons;
-
-	if (prod_ptr == cons_ptr) {
-		int reset_dma = 0;
-
-		/* Input buffer appears empty, do a flush. */
-
-		/* DMA must be enabled for this to work. */
-		if (!(port->ip_sscr & SSCR_DMA_EN)) {
-			port->ip_sscr |= SSCR_DMA_EN;
-			reset_dma = 1;
-		}
-
-		/* Potential race condition: we must reload the srpir after
-		 * issuing the drain command, otherwise we could think the rx
-		 * buffer is empty, then take a very long interrupt, and when
-		 * we come back it's full and we wait forever for the drain to
-		 * complete.
-		 */
-		writel(port->ip_sscr | SSCR_RX_DRAIN,
-		       &port->ip_serial_regs->sscr);
-		prod_ptr = readl(&port->ip_serial_regs->srpir) & PROD_CONS_MASK;
-
-		/* We must not wait for the DRAIN to complete unless there are
-		 * at least 8 bytes (2 ring entries) available to receive the
-		 * data otherwise the DRAIN will never complete and we'll
-		 * deadlock here.
-		 * In fact, to make things easier, I'll just ignore the flush if
-		 * there is any data at all now available.
-		 */
-		if (prod_ptr == cons_ptr) {
-			loop_counter = 0;
-			while (readl(&port->ip_serial_regs->sscr) &
-			       SSCR_RX_DRAIN) {
-				loop_counter++;
-				if (loop_counter > MAXITER)
-					return -1;
-			}
-
-			/* SIGH. We have to reload the prod_ptr *again* since
-			 * the drain may have caused it to change
-			 */
-			prod_ptr = readl(&port->ip_serial_regs->srpir)
-			    & PROD_CONS_MASK;
-		}
-		if (reset_dma) {
-			port->ip_sscr &= ~SSCR_DMA_EN;
-			writel(port->ip_sscr, &port->ip_serial_regs->sscr);
-		}
-	}
-	inring = port->ip_inring;
-	port->ip_flags &= ~READ_ABORTED;
-
-	total = 0;
-	loop_counter = 0xfffff;	/* to avoid hangs */
-
-	/* Grab bytes from the hardware */
-	while ((prod_ptr != cons_ptr) && (len > 0)) {
-		entry = (struct ring_entry *)((caddr_t) inring + cons_ptr);
-
-		if (loop_counter-- <= 0) {
-			printk(KERN_WARNING "IOC3 serial: "
-			       "possible hang condition/"
-			       "port stuck on read (line %d).\n",
-				the_port->line);
-			break;
-		}
-
-		/* According to the producer pointer, this ring entry
-		 * must contain some data.  But if the PIO happened faster
-		 * than the DMA, the data may not be available yet, so let's
-		 * wait until it arrives.
-		 */
-		if ((entry->ring_allsc & RING_ANY_VALID) == 0) {
-			/* Indicate the read is aborted so we don't disable
-			 * the interrupt thinking that the consumer is
-			 * congested.
-			 */
-			port->ip_flags |= READ_ABORTED;
-			len = 0;
-			break;
-		}
-
-		/* Load the bytes/status out of the ring entry */
-		for (byte_num = 0; byte_num < 4 && len > 0; byte_num++) {
-			sc = &(entry->ring_sc[byte_num]);
-
-			/* Check for change in modem state or overrun */
-			if ((*sc & RXSB_MODEM_VALID)
-			    && (port->ip_notify & N_DDCD)) {
-				/* Notify upper layer if DCD dropped */
-				if ((port->ip_flags & DCD_ON)
-				    && !(*sc & RXSB_DCD)) {
-					/* If we have already copied some data,
-					 * return it.  We'll pick up the carrier
-					 * drop on the next pass.  That way we
-					 * don't throw away the data that has
-					 * already been copied back to
-					 * the caller's buffer.
-					 */
-					if (total > 0) {
-						len = 0;
-						break;
-					}
-					port->ip_flags &= ~DCD_ON;
-
-					/* Turn off this notification so the
-					 * carrier drop protocol won't see it
-					 * again when it does a read.
-					 */
-					*sc &= ~RXSB_MODEM_VALID;
-
-					/* To keep things consistent, we need
-					 * to update the consumer pointer so
-					 * the next reader won't come in and
-					 * try to read the same ring entries
-					 * again. This must be done here before
-					 * the dcd change.
-					 */
-
-					if ((entry->ring_allsc & RING_ANY_VALID)
-					    == 0) {
-						cons_ptr += (int)sizeof
-						    (struct ring_entry);
-						cons_ptr &= PROD_CONS_MASK;
-					}
-					writel(cons_ptr,
-					       &port->ip_serial_regs->srcir);
-					port->ip_rx_cons = cons_ptr;
-
-					/* Notify upper layer of carrier drop */
-					if ((port->ip_notify & N_DDCD)
-					    && port->ip_port) {
-						uart_handle_dcd_change
-							(port->ip_port, 0);
-						wake_up_interruptible
-						    (&the_port->state->
-						     port.delta_msr_wait);
-					}
-
-					/* If we had any data to return, we
-					 * would have returned it above.
-					 */
-					return 0;
-				}
-			}
-			if (*sc & RXSB_MODEM_VALID) {
-				/* Notify that an input overrun occurred */
-				if ((*sc & RXSB_OVERRUN)
-				    && (port->ip_notify & N_OVERRUN_ERROR)) {
-					ioc3_cb_post_ncs(the_port, NCS_OVERRUN);
-				}
-				/* Don't look at this byte again */
-				*sc &= ~RXSB_MODEM_VALID;
-			}
-
-			/* Check for valid data or RX errors */
-			if ((*sc & RXSB_DATA_VALID) &&
-			    ((*sc & (RXSB_PAR_ERR
-				     | RXSB_FRAME_ERR | RXSB_BREAK))
-			     && (port->ip_notify & (N_PARITY_ERROR
-						    | N_FRAMING_ERROR
-						    | N_BREAK)))) {
-				/* There is an error condition on the next byte.
-				 * If we have already transferred some bytes,
-				 * we'll stop here. Otherwise if this is the
-				 * first byte to be read, we'll just transfer
-				 * it alone after notifying the
-				 * upper layer of its status.
-				 */
-				if (total > 0) {
-					len = 0;
-					break;
-				} else {
-					if ((*sc & RXSB_PAR_ERR) &&
-					    (port->
-					     ip_notify & N_PARITY_ERROR)) {
-						ioc3_cb_post_ncs(the_port,
-								 NCS_PARITY);
-					}
-					if ((*sc & RXSB_FRAME_ERR) &&
-					    (port->
-					     ip_notify & N_FRAMING_ERROR)) {
-						ioc3_cb_post_ncs(the_port,
-								 NCS_FRAMING);
-					}
-					if ((*sc & RXSB_BREAK)
-					    && (port->ip_notify & N_BREAK)) {
-						ioc3_cb_post_ncs
-						    (the_port, NCS_BREAK);
-					}
-					len = 1;
-				}
-			}
-			if (*sc & RXSB_DATA_VALID) {
-				*sc &= ~RXSB_DATA_VALID;
-				*buf = entry->ring_data[byte_num];
-				buf++;
-				len--;
-				total++;
-			}
-		}
-
-		/* If we used up this entry entirely, go on to the next one,
-		 * otherwise we must have run out of buffer space, so
-		 * leave the consumer pointer here for the next read in case
-		 * there are still unread bytes in this entry.
-		 */
-		if ((entry->ring_allsc & RING_ANY_VALID) == 0) {
-			cons_ptr += (int)sizeof(struct ring_entry);
-			cons_ptr &= PROD_CONS_MASK;
-		}
-	}
-
-	/* Update consumer pointer and re-arm rx timer interrupt */
-	writel(cons_ptr, &port->ip_serial_regs->srcir);
-	port->ip_rx_cons = cons_ptr;
-
-	/* If we have now dipped below the rx high water mark and we have
-	 * rx_high interrupt turned off, we can now turn it back on again.
-	 */
-	if ((port->ip_flags & INPUT_HIGH) && (((prod_ptr - cons_ptr)
-					       & PROD_CONS_MASK) <
-					      ((port->
-						ip_sscr &
-						SSCR_RX_THRESHOLD)
-					       << PROD_CONS_PTR_OFF))) {
-		port->ip_flags &= ~INPUT_HIGH;
-		enable_intrs(port, hooks->intr_rx_high);
-	}
-	return total;
-}
-
-/**
- * receive_chars - upper level read.
- * @the_port: port to read from
- */
-static int receive_chars(struct uart_port *the_port)
-{
-	unsigned char ch[MAX_CHARS];
-	int read_count = 0, read_room, flip = 0;
-	struct uart_state *state = the_port->state;
-	struct ioc3_port *port = get_ioc3_port(the_port);
-	unsigned long pflags;
-
-	/* Make sure all the pointers are "good" ones */
-	if (!state)
-		return 0;
-
-	if (!(port->ip_flags & INPUT_ENABLE))
-		return 0;
-
-	spin_lock_irqsave(&the_port->lock, pflags);
-
-	read_count = do_read(the_port, ch, MAX_CHARS);
-	if (read_count > 0) {
-		flip = 1;
-		read_room = tty_insert_flip_string(&state->port, ch,
-				read_count);
-		the_port->icount.rx += read_count;
-	}
-	spin_unlock_irqrestore(&the_port->lock, pflags);
-
-	if (flip)
-		tty_flip_buffer_push(&state->port);
-
-	return read_count;
-}
-
-/**
- * ioc3uart_intr_one - lowest level (per port) interrupt handler.
- * @is : submodule
- * @idd: driver data
- * @pending: interrupts to handle
- */
-
-static inline int
-ioc3uart_intr_one(struct ioc3_submodule *is,
-			struct ioc3_driver_data *idd,
-			unsigned int pending)
-{
-	int port_num = GET_PORT_FROM_SIO_IR(pending);
-	struct port_hooks *hooks;
-	unsigned int rx_high_rd_aborted = 0;
-	unsigned long flags;
-	struct uart_port *the_port;
-	struct ioc3_port *port;
-	int loop_counter;
-	struct ioc3_card *card_ptr;
-	unsigned int sio_ir;
-
-	card_ptr = idd->data[is->id];
-	port = card_ptr->ic_port[port_num].icp_port;
-	hooks = port->ip_hooks;
-
-	/* Possible race condition here: The tx_mt interrupt bit may be
-	 * cleared without the intervention of the interrupt handler,
-	 * e.g. by a write.  If the top level interrupt handler reads a
-	 * tx_mt, then some other processor does a write, starting up
-	 * output, then we come in here, see the tx_mt and stop DMA, the
-	 * output started by the other processor will hang.  Thus we can
-	 * only rely on tx_mt being legitimate if it is read while the
-	 * port lock is held.  Therefore this bit must be ignored in the
-	 * passed in interrupt mask which was read by the top level
-	 * interrupt handler since the port lock was not held at the time
-	 * it was read.  We can only rely on this bit being accurate if it
-	 * is read while the port lock is held.  So we'll clear it for now,
-	 * and reload it later once we have the port lock.
-	 */
-
-	sio_ir = pending & ~(hooks->intr_tx_mt);
-	spin_lock_irqsave(&port->ip_lock, flags);
-
-	loop_counter = MAXITER;	/* to avoid hangs */
-
-	do {
-		uint32_t shadow;
-
-		if (loop_counter-- <= 0) {
-			printk(KERN_WARNING "IOC3 serial: "
-			       "possible hang condition/"
-			       "port stuck on interrupt (line %d).\n",
-				((struct uart_port *)port->ip_port)->line);
-			break;
-		}
-		/* Handle a DCD change */
-		if (sio_ir & hooks->intr_delta_dcd) {
-			ioc3_ack(is, idd, hooks->intr_delta_dcd);
-			shadow = readl(&port->ip_serial_regs->shadow);
-
-			if ((port->ip_notify & N_DDCD)
-			    && (shadow & SHADOW_DCD)
-			    && (port->ip_port)) {
-				the_port = port->ip_port;
-				uart_handle_dcd_change(the_port,
-						shadow & SHADOW_DCD);
-				wake_up_interruptible
-				    (&the_port->state->port.delta_msr_wait);
-			} else if ((port->ip_notify & N_DDCD)
-				   && !(shadow & SHADOW_DCD)) {
-				/* Flag delta DCD/no DCD */
-				uart_handle_dcd_change(port->ip_port,
-						shadow & SHADOW_DCD);
-				port->ip_flags |= DCD_ON;
-			}
-		}
-
-		/* Handle a CTS change */
-		if (sio_ir & hooks->intr_delta_cts) {
-			ioc3_ack(is, idd, hooks->intr_delta_cts);
-			shadow = readl(&port->ip_serial_regs->shadow);
-
-			if ((port->ip_notify & N_DCTS) && (port->ip_port)) {
-				the_port = port->ip_port;
-				uart_handle_cts_change(the_port, shadow
-						& SHADOW_CTS);
-				wake_up_interruptible
-				    (&the_port->state->port.delta_msr_wait);
-			}
-		}
-
-		/* rx timeout interrupt.  Must be some data available.  Put this
-		 * before the check for rx_high since servicing this condition
-		 * may cause that condition to clear.
-		 */
-		if (sio_ir & hooks->intr_rx_timer) {
-			ioc3_ack(is, idd, hooks->intr_rx_timer);
-			if ((port->ip_notify & N_DATA_READY)
-						&& (port->ip_port)) {
-				receive_chars(port->ip_port);
-			}
-		}
-
-		/* rx high interrupt. Must be after rx_timer.  */
-		else if (sio_ir & hooks->intr_rx_high) {
-			/* Data available, notify upper layer */
-			if ((port->ip_notify & N_DATA_READY) && port->ip_port) {
-				receive_chars(port->ip_port);
-			}
-
-			/* We can't ACK this interrupt.  If receive_chars didn't
-			 * cause the condition to clear, we'll have to disable
-			 * the interrupt until the data is drained.
-			 * If the read was aborted, don't disable the interrupt
-			 * as this may cause us to hang indefinitely.  An
-			 * aborted read generally means that this interrupt
-			 * hasn't been delivered to the cpu yet anyway, even
-			 * though we see it as asserted when we read the sio_ir.
-			 */
-			if ((sio_ir = PENDING(card_ptr, idd))
-					& hooks->intr_rx_high) {
-				if (port->ip_flags & READ_ABORTED) {
-					rx_high_rd_aborted++;
-				}
-				else {
-					card_ptr->ic_enable &= ~hooks->intr_rx_high;
-					port->ip_flags |= INPUT_HIGH;
-				}
-			}
-		}
-
-		/* We got a low water interrupt: notify upper layer to
-		 * send more data.  Must come before tx_mt since servicing
-		 * this condition may cause that condition to clear.
-		 */
-		if (sio_ir & hooks->intr_tx_explicit) {
-			port->ip_flags &= ~LOWAT_WRITTEN;
-			ioc3_ack(is, idd, hooks->intr_tx_explicit);
-			if (port->ip_notify & N_OUTPUT_LOWAT)
-				ioc3_cb_output_lowat(port);
-		}
-
-		/* Handle tx_mt.  Must come after tx_explicit.  */
-		else if (sio_ir & hooks->intr_tx_mt) {
-			/* If we are expecting a lowat notification
-			 * and we get to this point it probably means that for
-			 * some reason the tx_explicit didn't work as expected
-			 * (that can legitimately happen if the output buffer is
-			 * filled up in just the right way).
-			 * So send the notification now.
-			 */
-			if (port->ip_notify & N_OUTPUT_LOWAT) {
-				ioc3_cb_output_lowat(port);
-
-				/* We need to reload the sio_ir since the lowat
-				 * call may have caused another write to occur,
-				 * clearing the tx_mt condition.
-				 */
-				sio_ir = PENDING(card_ptr, idd);
-			}
-
-			/* If the tx_mt condition still persists even after the
-			 * lowat call, we've got some work to do.
-			 */
-			if (sio_ir & hooks->intr_tx_mt) {
-				/* If we are not currently expecting DMA input,
-				 * and the transmitter has just gone idle,
-				 * there is no longer any reason for DMA, so
-				 * disable it.
-				 */
-				if (!(port->ip_notify
-				      & (N_DATA_READY | N_DDCD))) {
-					BUG_ON(!(port->ip_sscr
-						 & SSCR_DMA_EN));
-					port->ip_sscr &= ~SSCR_DMA_EN;
-					writel(port->ip_sscr,
-					       &port->ip_serial_regs->sscr);
-				}
-				/* Prevent infinite tx_mt interrupt */
-				card_ptr->ic_enable &= ~hooks->intr_tx_mt;
-			}
-		}
-		sio_ir = PENDING(card_ptr, idd);
-
-		/* if the read was aborted and only hooks->intr_rx_high,
-		 * clear hooks->intr_rx_high, so we do not loop forever.
-		 */
-
-		if (rx_high_rd_aborted && (sio_ir == hooks->intr_rx_high)) {
-			sio_ir &= ~hooks->intr_rx_high;
-		}
-	} while (sio_ir & hooks->intr_all);
-
-	spin_unlock_irqrestore(&port->ip_lock, flags);
-	ioc3_enable(is, idd, card_ptr->ic_enable);
-	return 0;
-}
-
-/**
- * ioc3uart_intr - field all serial interrupts
- * @is : submodule
- * @idd: driver data
- * @pending: interrupts to handle
- *
- */
-
-static int ioc3uart_intr(struct ioc3_submodule *is,
-			struct ioc3_driver_data *idd,
-			unsigned int pending)
-{
-	int ret = 0;
-
-	/*
-	 * The upper level interrupt handler sends interrupts for both ports
-	 * here. So we need to call for each port with its interrupts.
-	 */
-
-	if (pending & SIO_IR_SA)
-		ret |= ioc3uart_intr_one(is, idd, pending & SIO_IR_SA);
-	if (pending & SIO_IR_SB)
-		ret |= ioc3uart_intr_one(is, idd, pending & SIO_IR_SB);
-
-	return ret;
-}
-
-/**
- * ic3_type
- * @port: Port to operate with (we ignore since we only have one port)
- *
- */
-static const char *ic3_type(struct uart_port *the_port)
-{
-	if (IS_RS232(the_port->line))
-		return "SGI IOC3 Serial [rs232]";
-	else
-		return "SGI IOC3 Serial [rs422]";
-}
-
-/**
- * ic3_tx_empty - Is the transmitter empty?
- * @port: Port to operate on
- *
- */
-static unsigned int ic3_tx_empty(struct uart_port *the_port)
-{
-	unsigned int ret = 0;
-	struct ioc3_port *port = get_ioc3_port(the_port);
-
-	if (readl(&port->ip_serial_regs->shadow) & SHADOW_TEMT)
-		ret = TIOCSER_TEMT;
-	return ret;
-}
-
-/**
- * ic3_stop_tx - stop the transmitter
- * @port: Port to operate on
- *
- */
-static void ic3_stop_tx(struct uart_port *the_port)
-{
-	struct ioc3_port *port = get_ioc3_port(the_port);
-
-	if (port)
-		set_notification(port, N_OUTPUT_LOWAT, 0);
-}
-
-/**
- * ic3_stop_rx - stop the receiver
- * @port: Port to operate on
- *
- */
-static void ic3_stop_rx(struct uart_port *the_port)
-{
-	struct ioc3_port *port = get_ioc3_port(the_port);
-
-	if (port)
-		port->ip_flags &= ~INPUT_ENABLE;
-}
-
-/**
- * null_void_function
- * @port: Port to operate on
- *
- */
-static void null_void_function(struct uart_port *the_port)
-{
-}
-
-/**
- * ic3_shutdown - shut down the port - free irq and disable
- * @port: port to shut down
- *
- */
-static void ic3_shutdown(struct uart_port *the_port)
-{
-	unsigned long port_flags;
-	struct ioc3_port *port;
-	struct uart_state *state;
-
-	port = get_ioc3_port(the_port);
-	if (!port)
-		return;
-
-	state = the_port->state;
-	wake_up_interruptible(&state->port.delta_msr_wait);
-
-	spin_lock_irqsave(&the_port->lock, port_flags);
-	set_notification(port, N_ALL, 0);
-	spin_unlock_irqrestore(&the_port->lock, port_flags);
-}
-
-/**
- * ic3_set_mctrl - set control lines (dtr, rts, etc)
- * @port: Port to operate on
- * @mctrl: Lines to set/unset
- *
- */
-static void ic3_set_mctrl(struct uart_port *the_port, unsigned int mctrl)
-{
-	unsigned char mcr = 0;
-
-	if (mctrl & TIOCM_RTS)
-		mcr |= UART_MCR_RTS;
-	if (mctrl & TIOCM_DTR)
-		mcr |= UART_MCR_DTR;
-	if (mctrl & TIOCM_OUT1)
-		mcr |= UART_MCR_OUT1;
-	if (mctrl & TIOCM_OUT2)
-		mcr |= UART_MCR_OUT2;
-	if (mctrl & TIOCM_LOOP)
-		mcr |= UART_MCR_LOOP;
-
-	set_mcr(the_port, mcr, SHADOW_DTR);
-}
-
-/**
- * ic3_get_mctrl - get control line info
- * @port: port to operate on
- *
- */
-static unsigned int ic3_get_mctrl(struct uart_port *the_port)
-{
-	struct ioc3_port *port = get_ioc3_port(the_port);
-	uint32_t shadow;
-	unsigned int ret = 0;
-
-	if (!port)
-		return 0;
-
-	shadow = readl(&port->ip_serial_regs->shadow);
-	if (shadow & SHADOW_DCD)
-		ret |= TIOCM_CD;
-	if (shadow & SHADOW_DR)
-		ret |= TIOCM_DSR;
-	if (shadow & SHADOW_CTS)
-		ret |= TIOCM_CTS;
-	return ret;
-}
-
-/**
- * ic3_start_tx - Start transmitter. Called with the_port->lock
- * @port: Port to operate on
- *
- */
-static void ic3_start_tx(struct uart_port *the_port)
-{
-	struct ioc3_port *port = get_ioc3_port(the_port);
-
-	if (port) {
-		set_notification(port, N_OUTPUT_LOWAT, 1);
-		enable_intrs(port, port->ip_hooks->intr_tx_mt);
-	}
-}
-
-/**
- * ic3_break_ctl - handle breaks
- * @port: Port to operate on
- * @break_state: Break state
- *
- */
-static void ic3_break_ctl(struct uart_port *the_port, int break_state)
-{
-}
-
-/**
- * ic3_startup - Start up the serial port - always return 0 (We're always on)
- * @port: Port to operate on
- *
- */
-static int ic3_startup(struct uart_port *the_port)
-{
-	int retval;
-	struct ioc3_port *port;
-	struct ioc3_card *card_ptr;
-	unsigned long port_flags;
-
-	if (!the_port) {
-		NOT_PROGRESS();
-		return -ENODEV;
-	}
-	port = get_ioc3_port(the_port);
-	if (!port) {
-		NOT_PROGRESS();
-		return -ENODEV;
-	}
-	card_ptr = port->ip_card;
-	port->ip_port = the_port;
-
-	if (!card_ptr) {
-		NOT_PROGRESS();
-		return -ENODEV;
-	}
-
-	/* Start up the serial port */
-	spin_lock_irqsave(&the_port->lock, port_flags);
-	retval = ic3_startup_local(the_port);
-	spin_unlock_irqrestore(&the_port->lock, port_flags);
-	return retval;
-}
-
-/**
- * ic3_set_termios - set termios stuff
- * @port: port to operate on
- * @termios: New settings
- * @termios: Old
- *
- */
-static void
-ic3_set_termios(struct uart_port *the_port,
-		struct ktermios *termios, struct ktermios *old_termios)
-{
-	unsigned long port_flags;
-
-	spin_lock_irqsave(&the_port->lock, port_flags);
-	ioc3_change_speed(the_port, termios, old_termios);
-	spin_unlock_irqrestore(&the_port->lock, port_flags);
-}
-
-/**
- * ic3_request_port - allocate resources for port - no op....
- * @port: port to operate on
- *
- */
-static int ic3_request_port(struct uart_port *port)
-{
-	return 0;
-}
-
-/* Associate the uart functions above - given to serial core */
-static const struct uart_ops ioc3_ops = {
-	.tx_empty = ic3_tx_empty,
-	.set_mctrl = ic3_set_mctrl,
-	.get_mctrl = ic3_get_mctrl,
-	.stop_tx = ic3_stop_tx,
-	.start_tx = ic3_start_tx,
-	.stop_rx = ic3_stop_rx,
-	.break_ctl = ic3_break_ctl,
-	.startup = ic3_startup,
-	.shutdown = ic3_shutdown,
-	.set_termios = ic3_set_termios,
-	.type = ic3_type,
-	.release_port = null_void_function,
-	.request_port = ic3_request_port,
-};
-
-/*
- * Boot-time initialization code
- */
-
-static struct uart_driver ioc3_uart = {
-	.owner = THIS_MODULE,
-	.driver_name = "ioc3_serial",
-	.dev_name = DEVICE_NAME,
-	.major = DEVICE_MAJOR,
-	.minor = DEVICE_MINOR,
-	.nr = MAX_LOGICAL_PORTS
-};
-
-/**
- * ioc3_serial_core_attach - register with serial core
- *		This is done during pci probing
- * @is: submodule struct for this
- * @idd: handle for this card
- */
-static inline int ioc3_serial_core_attach( struct ioc3_submodule *is,
-				struct ioc3_driver_data *idd)
-{
-	struct ioc3_port *port;
-	struct uart_port *the_port;
-	struct ioc3_card *card_ptr = idd->data[is->id];
-	int ii, phys_port;
-	struct pci_dev *pdev = idd->pdev;
-
-	DPRINT_CONFIG(("%s: attach pdev 0x%p - card_ptr 0x%p\n",
-		       __func__, pdev, (void *)card_ptr));
-
-	if (!card_ptr)
-		return -ENODEV;
-
-	/* once around for each logical port on this card */
-	for (ii = 0; ii < LOGICAL_PORTS_PER_CARD; ii++) {
-		phys_port = GET_PHYSICAL_PORT(ii);
-		the_port = &card_ptr->ic_port[phys_port].
-				icp_uart_port[GET_LOGICAL_PORT(ii)];
-		port = card_ptr->ic_port[phys_port].icp_port;
-		port->ip_port = the_port;
-
-		DPRINT_CONFIG(("%s: attach the_port 0x%p / port 0x%p [%d/%d]\n",
-			__func__, (void *)the_port, (void *)port,
-				phys_port, ii));
-
-		/* membase, iobase and mapbase just need to be non-0 */
-		the_port->membase = (unsigned char __iomem *)1;
-		the_port->iobase = (pdev->bus->number << 16) |  ii;
-		the_port->line = (Num_of_ioc3_cards << 2) | ii;
-		the_port->mapbase = 1;
-		the_port->type = PORT_16550A;
-		the_port->fifosize = FIFO_SIZE;
-		the_port->ops = &ioc3_ops;
-		the_port->irq = idd->irq_io;
-		the_port->dev = &pdev->dev;
-
-		if (uart_add_one_port(&ioc3_uart, the_port) < 0) {
-			printk(KERN_WARNING
-		          "%s: unable to add port %d bus %d\n",
-			       __func__, the_port->line, pdev->bus->number);
-		} else {
-			DPRINT_CONFIG(("IOC3 serial port %d irq %d bus %d\n",
-		          the_port->line, the_port->irq, pdev->bus->number));
-		}
-
-		/* all ports are rs232 for now */
-		if (IS_PHYSICAL_PORT(ii))
-			ioc3_set_proto(port, PROTO_RS232);
-	}
-	return 0;
-}
-
-/**
- * ioc3uart_remove - register detach function
- * @is: submodule struct for this submodule
- * @idd: ioc3 driver data for this submodule
- */
-
-static int ioc3uart_remove(struct ioc3_submodule *is,
-			struct ioc3_driver_data *idd)
-{
-	struct ioc3_card *card_ptr = idd->data[is->id];
-	struct uart_port *the_port;
-	struct ioc3_port *port;
-	int ii;
-
-	if (card_ptr) {
-		for (ii = 0; ii < LOGICAL_PORTS_PER_CARD; ii++) {
-			the_port = &card_ptr->ic_port[GET_PHYSICAL_PORT(ii)].
-					icp_uart_port[GET_LOGICAL_PORT(ii)];
-			if (the_port)
-				uart_remove_one_port(&ioc3_uart, the_port);
-			port = card_ptr->ic_port[GET_PHYSICAL_PORT(ii)].icp_port;
-			if (port && IS_PHYSICAL_PORT(ii)
-					&& (GET_PHYSICAL_PORT(ii) == 0)) {
-				pci_free_consistent(port->ip_idd->pdev,
-					TOTAL_RING_BUF_SIZE,
-					(void *)port->ip_cpu_ringbuf,
-					port->ip_dma_ringbuf);
-				kfree(port);
-				card_ptr->ic_port[GET_PHYSICAL_PORT(ii)].
-							icp_port = NULL;
-			}
-		}
-		kfree(card_ptr);
-		idd->data[is->id] = NULL;
-	}
-	return 0;
-}
-
-/**
- * ioc3uart_probe - card probe function called from shim driver
- * @is: submodule struct for this submodule
- * @idd: ioc3 driver data for this card
- */
-
-static int
-ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd)
-{
-	struct pci_dev *pdev = idd->pdev;
-	struct ioc3_card *card_ptr;
-	int ret = 0;
-	struct ioc3_port *port;
-	struct ioc3_port *ports[PORTS_PER_CARD];
-	int phys_port;
-	int cnt;
-
-	DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __func__, is, idd));
-
-	card_ptr = kzalloc(sizeof(struct ioc3_card), GFP_KERNEL);
-	if (!card_ptr) {
-		printk(KERN_WARNING "ioc3_attach_one"
-		       ": unable to get memory for the IOC3\n");
-		return -ENOMEM;
-	}
-	idd->data[is->id] = card_ptr;
-	Submodule_slot = is->id;
-
-	writel(((UARTA_BASE >> 3) << SIO_CR_SER_A_BASE_SHIFT) |
-		((UARTB_BASE >> 3) << SIO_CR_SER_B_BASE_SHIFT) |
-		(0xf << SIO_CR_CMD_PULSE_SHIFT), &idd->vma->sio_cr);
-
-	pci_write_config_dword(pdev, PCI_LAT, 0xff00);
-
-	/* Enable serial port mode select generic PIO pins as outputs */
-	ioc3_gpcr_set(idd, GPCR_UARTA_MODESEL | GPCR_UARTB_MODESEL);
-
-	/* Create port structures for each port */
-	for (phys_port = 0; phys_port < PORTS_PER_CARD; phys_port++) {
-		port = kzalloc(sizeof(struct ioc3_port), GFP_KERNEL);
-		if (!port) {
-			printk(KERN_WARNING
-			       "IOC3 serial memory not available for port\n");
-			ret = -ENOMEM;
-			goto out4;
-		}
-		spin_lock_init(&port->ip_lock);
-
-		/* we need to remember the previous ones, to point back to
-		 * them farther down - setting up the ring buffers.
-		 */
-		ports[phys_port] = port;
-
-		/* init to something useful */
-		card_ptr->ic_port[phys_port].icp_port = port;
-		port->ip_is = is;
-		port->ip_idd = idd;
-		port->ip_baud = 9600;
-		port->ip_card = card_ptr;
-		port->ip_hooks = &hooks_array[phys_port];
-
-		/* Setup each port */
-		if (phys_port == 0) {
-			port->ip_serial_regs = &idd->vma->port_a;
-			port->ip_uart_regs = &idd->vma->sregs.uarta;
-
-			DPRINT_CONFIG(("%s : Port A ip_serial_regs 0x%p "
-				       "ip_uart_regs 0x%p\n",
-				       __func__,
-				       (void *)port->ip_serial_regs,
-				       (void *)port->ip_uart_regs));
-
-			/* setup ring buffers */
-			port->ip_cpu_ringbuf = pci_alloc_consistent(pdev,
-				TOTAL_RING_BUF_SIZE, &port->ip_dma_ringbuf);
-
-			BUG_ON(!((((int64_t) port->ip_dma_ringbuf) &
-				  (TOTAL_RING_BUF_SIZE - 1)) == 0));
-			port->ip_inring = RING(port, RX_A);
-			port->ip_outring = RING(port, TX_A);
-			DPRINT_CONFIG(("%s : Port A ip_cpu_ringbuf 0x%p "
-				       "ip_dma_ringbuf 0x%p, ip_inring 0x%p "
-					"ip_outring 0x%p\n",
-				       __func__,
-				       (void *)port->ip_cpu_ringbuf,
-				       (void *)port->ip_dma_ringbuf,
-				       (void *)port->ip_inring,
-				       (void *)port->ip_outring));
-		}
-		else {
-			port->ip_serial_regs = &idd->vma->port_b;
-			port->ip_uart_regs = &idd->vma->sregs.uartb;
-
-			DPRINT_CONFIG(("%s : Port B ip_serial_regs 0x%p "
-				       "ip_uart_regs 0x%p\n",
-				       __func__,
-				       (void *)port->ip_serial_regs,
-				       (void *)port->ip_uart_regs));
-
-			/* share the ring buffers */
-			port->ip_dma_ringbuf =
-			    ports[phys_port - 1]->ip_dma_ringbuf;
-			port->ip_cpu_ringbuf =
-			    ports[phys_port - 1]->ip_cpu_ringbuf;
-			port->ip_inring = RING(port, RX_B);
-			port->ip_outring = RING(port, TX_B);
-			DPRINT_CONFIG(("%s : Port B ip_cpu_ringbuf 0x%p "
-				       "ip_dma_ringbuf 0x%p, ip_inring 0x%p "
-					"ip_outring 0x%p\n",
-				       __func__,
-				       (void *)port->ip_cpu_ringbuf,
-				       (void *)port->ip_dma_ringbuf,
-				       (void *)port->ip_inring,
-				       (void *)port->ip_outring));
-		}
-
-		DPRINT_CONFIG(("%s : port %d [addr 0x%p] card_ptr 0x%p",
-			       __func__,
-			       phys_port, (void *)port, (void *)card_ptr));
-		DPRINT_CONFIG((" ip_serial_regs 0x%p ip_uart_regs 0x%p\n",
-			       (void *)port->ip_serial_regs,
-			       (void *)port->ip_uart_regs));
-
-		/* Initialize the hardware for IOC3 */
-		port_init(port);
-
-		DPRINT_CONFIG(("%s: phys_port %d port 0x%p inring 0x%p "
-			       "outring 0x%p\n",
-			       __func__,
-			       phys_port, (void *)port,
-			       (void *)port->ip_inring,
-			       (void *)port->ip_outring));
-
-	}
-
-	/* register port with the serial core */
-
-	ret = ioc3_serial_core_attach(is, idd);
-	if (ret)
-		goto out4;
-
-	Num_of_ioc3_cards++;
-
-	return ret;
-
-	/* error exits that give back resources */
-out4:
-	for (cnt = 0; cnt < phys_port; cnt++)
-		kfree(ports[cnt]);
-
-	kfree(card_ptr);
-	return ret;
-}
-
-static struct ioc3_submodule ioc3uart_ops = {
-	.name = "IOC3uart",
-	.probe = ioc3uart_probe,
-	.remove = ioc3uart_remove,
-	/* call .intr for both ports initially */
-	.irq_mask = SIO_IR_SA | SIO_IR_SB,
-	.intr = ioc3uart_intr,
-	.owner = THIS_MODULE,
-};
-
-/**
- * ioc3_detect - module init called,
- */
-static int __init ioc3uart_init(void)
-{
-	int ret;
-
-	/* register with serial core */
-	if ((ret = uart_register_driver(&ioc3_uart)) < 0) {
-		printk(KERN_WARNING
-		       "%s: Couldn't register IOC3 uart serial driver\n",
-		       __func__);
-		return ret;
-	}
-	ret = ioc3_register_submodule(&ioc3uart_ops);
-	if (ret)
-		uart_unregister_driver(&ioc3_uart);
-	return ret;
-}
-
-static void __exit ioc3uart_exit(void)
-{
-	ioc3_unregister_submodule(&ioc3uart_ops);
-	uart_unregister_driver(&ioc3_uart);
-}
-
-module_init(ioc3uart_init);
-module_exit(ioc3uart_exit);
-
-MODULE_AUTHOR("Pat Gefre - Silicon Graphics Inc. (SGI) <pfg@sgi.com>");
-MODULE_DESCRIPTION("Serial PCI driver module for SGI IOC3 card");
-MODULE_LICENSE("GPL");
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 09/28] char/mspec: remove SGI SN2 support
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (7 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 08/28] tty/serial: remove the ioc3_serial driver Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 10/28] misc/sgi-xp: " Christoph Hellwig
                   ` (17 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed, so drop the bits specific to
it from this driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/char/mspec.c | 155 +++----------------------------------------
 1 file changed, 11 insertions(+), 144 deletions(-)

diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index e75c9df7c2d8..a9d9f074fbd6 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -9,11 +9,8 @@
  *
  * This driver exports the SN special memory (mspec) facility to user
  * processes.
- * There are three types of memory made available thru this driver:
- * fetchops, uncached and cached.
- *
- * Fetchops are atomic memory operations that are implemented in the
- * memory controller on SGI SN hardware.
+ * There are two types of memory made available thru this driver:
+ * uncached and cached.
  *
  * Uncached are used for memory write combining feature of the ia64
  * cpu.
@@ -46,16 +43,8 @@
 #include <linux/atomic.h>
 #include <asm/tlbflush.h>
 #include <asm/uncached.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/arch.h>
-#include <asm/sn/mspec.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/io.h>
-#include <asm/sn/bte.h>
-#include <asm/sn/shubio.h>
 
 
-#define FETCHOP_ID	"SGI Fetchop,"
 #define CACHED_ID	"Cached,"
 #define UNCACHED_ID	"Uncached"
 #define REVISION	"4.0"
@@ -65,17 +54,10 @@
  * Page types allocated by the device.
  */
 enum mspec_page_type {
-	MSPEC_FETCHOP = 1,
-	MSPEC_CACHED,
+	MSPEC_CACHED = 2,
 	MSPEC_UNCACHED
 };
 
-#ifdef CONFIG_SGI_SN
-static int is_sn2;
-#else
-#define is_sn2		0
-#endif
-
 /*
  * One of these structures is allocated when an mspec region is mmaped. The
  * structure is pointed to by the vma->vm_private_data field in the vma struct.
@@ -96,39 +78,6 @@ struct vma_data {
 	unsigned long maddr[0];	/* Array of MSPEC addresses. */
 };
 
-/* used on shub2 to clear FOP cache in the HUB */
-static unsigned long scratch_page[MAX_NUMNODES];
-#define SH2_AMO_CACHE_ENTRIES	4
-
-static inline int
-mspec_zero_block(unsigned long addr, int len)
-{
-	int status;
-
-	if (is_sn2) {
-		if (is_shub2()) {
-			int nid;
-			void *p;
-			int i;
-
-			nid = nasid_to_cnodeid(get_node_number(__pa(addr)));
-			p = (void *)TO_AMO(scratch_page[nid]);
-
-			for (i=0; i < SH2_AMO_CACHE_ENTRIES; i++) {
-				FETCHOP_LOAD_OP(p, FETCHOP_LOAD);
-				p += FETCHOP_VAR_SIZE;
-			}
-		}
-
-		status = bte_copy(0, addr & ~__IA64_UNCACHED_OFFSET, len,
-				  BTE_WACQUIRE | BTE_ZERO_FILL, NULL);
-	} else {
-		memset((char *) addr, 0, len);
-		status = 0;
-	}
-	return status;
-}
-
 /*
  * mspec_open
  *
@@ -173,11 +122,8 @@ mspec_close(struct vm_area_struct *vma)
 		 */
 		my_page = vdata->maddr[index];
 		vdata->maddr[index] = 0;
-		if (!mspec_zero_block(my_page, PAGE_SIZE))
-			uncached_free_page(my_page, 1);
-		else
-			printk(KERN_WARNING "mspec_close(): "
-			       "failed to zero page %ld\n", my_page);
+		memset((char *)my_page, 0, PAGE_SIZE);
+		uncached_free_page(my_page, 1);
 	}
 
 	kvfree(vdata);
@@ -213,11 +159,7 @@ mspec_fault(struct vm_fault *vmf)
 		spin_unlock(&vdata->lock);
 	}
 
-	if (vdata->type == MSPEC_FETCHOP)
-		paddr = TO_AMO(maddr);
-	else
-		paddr = maddr & ~__IA64_UNCACHED_OFFSET;
-
+	paddr = maddr & ~__IA64_UNCACHED_OFFSET;
 	pfn = paddr >> PAGE_SHIFT;
 
 	return vmf_insert_pfn(vmf->vma, vmf->address, pfn);
@@ -269,19 +211,13 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
 	vma->vm_private_data = vdata;
 
 	vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
-	if (vdata->type == MSPEC_FETCHOP || vdata->type == MSPEC_UNCACHED)
+	if (vdata->type == MSPEC_UNCACHED)
 		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 	vma->vm_ops = &mspec_vm_ops;
 
 	return 0;
 }
 
-static int
-fetchop_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	return mspec_mmap(file, vma, MSPEC_FETCHOP);
-}
-
 static int
 cached_mmap(struct file *file, struct vm_area_struct *vma)
 {
@@ -294,18 +230,6 @@ uncached_mmap(struct file *file, struct vm_area_struct *vma)
 	return mspec_mmap(file, vma, MSPEC_UNCACHED);
 }
 
-static const struct file_operations fetchop_fops = {
-	.owner = THIS_MODULE,
-	.mmap = fetchop_mmap,
-	.llseek = noop_llseek,
-};
-
-static struct miscdevice fetchop_miscdev = {
-	.minor = MISC_DYNAMIC_MINOR,
-	.name = "sgi_fetchop",
-	.fops = &fetchop_fops
-};
-
 static const struct file_operations cached_fops = {
 	.owner = THIS_MODULE,
 	.mmap = cached_mmap,
@@ -339,89 +263,32 @@ static int __init
 mspec_init(void)
 {
 	int ret;
-	int nid;
-
-	/*
-	 * The fetchop device only works on SN2 hardware, uncached and cached
-	 * memory drivers should both be valid on all ia64 hardware
-	 */
-#ifdef CONFIG_SGI_SN
-	if (ia64_platform_is("sn2")) {
-		is_sn2 = 1;
-		if (is_shub2()) {
-			ret = -ENOMEM;
-			for_each_node_state(nid, N_ONLINE) {
-				int actual_nid;
-				int nasid;
-				unsigned long phys;
-
-				scratch_page[nid] = uncached_alloc_page(nid, 1);
-				if (scratch_page[nid] == 0)
-					goto free_scratch_pages;
-				phys = __pa(scratch_page[nid]);
-				nasid = get_node_number(phys);
-				actual_nid = nasid_to_cnodeid(nasid);
-				if (actual_nid != nid)
-					goto free_scratch_pages;
-			}
-		}
 
-		ret = misc_register(&fetchop_miscdev);
-		if (ret) {
-			printk(KERN_ERR
-			       "%s: failed to register device %i\n",
-			       FETCHOP_ID, ret);
-			goto free_scratch_pages;
-		}
-	}
-#endif
 	ret = misc_register(&cached_miscdev);
 	if (ret) {
 		printk(KERN_ERR "%s: failed to register device %i\n",
 		       CACHED_ID, ret);
-		if (is_sn2)
-			misc_deregister(&fetchop_miscdev);
-		goto free_scratch_pages;
+		return ret;
 	}
 	ret = misc_register(&uncached_miscdev);
 	if (ret) {
 		printk(KERN_ERR "%s: failed to register device %i\n",
 		       UNCACHED_ID, ret);
 		misc_deregister(&cached_miscdev);
-		if (is_sn2)
-			misc_deregister(&fetchop_miscdev);
-		goto free_scratch_pages;
+		return ret;
 	}
 
-	printk(KERN_INFO "%s %s initialized devices: %s %s %s\n",
-	       MSPEC_BASENAME, REVISION, is_sn2 ? FETCHOP_ID : "",
-	       CACHED_ID, UNCACHED_ID);
+	printk(KERN_INFO "%s %s initialized devices: %s %s\n",
+	       MSPEC_BASENAME, REVISION, CACHED_ID, UNCACHED_ID);
 
 	return 0;
-
- free_scratch_pages:
-	for_each_node(nid) {
-		if (scratch_page[nid] != 0)
-			uncached_free_page(scratch_page[nid], 1);
-	}
-	return ret;
 }
 
 static void __exit
 mspec_exit(void)
 {
-	int nid;
-
 	misc_deregister(&uncached_miscdev);
 	misc_deregister(&cached_miscdev);
-	if (is_sn2) {
-		misc_deregister(&fetchop_miscdev);
-
-		for_each_node(nid) {
-			if (scratch_page[nid] != 0)
-				uncached_free_page(scratch_page[nid], 1);
-		}
-	}
 }
 
 module_init(mspec_init);
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 10/28] misc/sgi-xp: remove SGI SN2 support
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (8 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 09/28] char/mspec: remove SGI SN2 support Christoph Hellwig
@ 2019-08-13  7:24 ` " Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 11/28] qla1280: " Christoph Hellwig
                   ` (16 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

Note this also marks xp broken on ia64 now, as the UV support, which
was disable in generic kernels before actually never compiled due to
undefined uv_gpa_to_soc_phys_ram and uv_gpa_in_mmr_space symbols since
at least commit c2c9f1157414 ("x86: uv: update XPC to handle updated
BIOS interface").

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/uv/kernel/setup.c         |    4 -
 drivers/misc/Kconfig                |    5 +-
 drivers/misc/sgi-xp/Makefile        |   13 +-
 drivers/misc/sgi-xp/xp.h            |   19 -
 drivers/misc/sgi-xp/xp_main.c       |    8 +-
 drivers/misc/sgi-xp/xp_nofault.S    |   35 -
 drivers/misc/sgi-xp/xp_sn2.c        |  190 ---
 drivers/misc/sgi-xp/xp_uv.c         |    3 +-
 drivers/misc/sgi-xp/xpc.h           |  273 ---
 drivers/misc/sgi-xp/xpc_main.c      |   31 +-
 drivers/misc/sgi-xp/xpc_partition.c |    5 -
 drivers/misc/sgi-xp/xpc_sn2.c       | 2459 ---------------------------
 drivers/misc/sgi-xp/xpc_uv.c        |    2 +
 drivers/misc/sgi-xp/xpnet.c         |    2 +-
 14 files changed, 15 insertions(+), 3034 deletions(-)
 delete mode 100644 drivers/misc/sgi-xp/xp_nofault.S
 delete mode 100644 drivers/misc/sgi-xp/xp_sn2.c
 delete mode 100644 drivers/misc/sgi-xp/xpc_sn2.c

diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
index f1490657bafc..32d6ea2e89f8 100644
--- a/arch/ia64/uv/kernel/setup.c
+++ b/arch/ia64/uv/kernel/setup.c
@@ -19,12 +19,8 @@ EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
 
 #ifdef CONFIG_IA64_SGI_UV
 int sn_prom_type;
-long sn_partition_id;
-EXPORT_SYMBOL(sn_partition_id);
 long sn_coherency_id;
 EXPORT_SYMBOL_GPL(sn_coherency_id);
-long sn_region_size;
-EXPORT_SYMBOL(sn_region_size);
 #endif
 
 struct redir_addr {
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 6abfc8e92fcc..299032693934 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -200,9 +200,8 @@ config ENCLOSURE_SERVICES
 config SGI_XP
 	tristate "Support communication between SGI SSIs"
 	depends on NET
-	depends on (IA64_GENERIC || IA64_SGI_SN2 || IA64_SGI_UV || X86_UV) && SMP
-	select IA64_UNCACHED_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
-	select GENERIC_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
+	depends on (IA64_GENERIC || IA64_SGI_UV || X86_UV) && SMP
+	depends on X86_64 || BROKEN
 	select SGI_GRU if X86_64 && SMP
 	---help---
 	  An SGI machine can be divided into multiple Single System
diff --git a/drivers/misc/sgi-xp/Makefile b/drivers/misc/sgi-xp/Makefile
index bbb622c19c06..34c55a4045af 100644
--- a/drivers/misc/sgi-xp/Makefile
+++ b/drivers/misc/sgi-xp/Makefile
@@ -4,17 +4,10 @@
 #
 
 obj-$(CONFIG_SGI_XP)		+= xp.o
-xp-y				:= xp_main.o
-xp-$(CONFIG_IA64_SGI_SN2)	+= xp_sn2.o xp_nofault.o
-xp-$(CONFIG_IA64_GENERIC)	+= xp_sn2.o xp_nofault.o
-xp-$(CONFIG_IA64_SGI_UV)	+= xp_uv.o
-xp-$(CONFIG_X86_64)		+= xp_uv.o
+xp-y				:= xp_main.o xp_uv.o
 
 obj-$(CONFIG_SGI_XP)		+= xpc.o
-xpc-y				:= xpc_main.o xpc_channel.o xpc_partition.o
-xpc-$(CONFIG_IA64_SGI_SN2)	+= xpc_sn2.o
-xpc-$(CONFIG_IA64_GENERIC)	+= xpc_sn2.o
-xpc-$(CONFIG_IA64_SGI_UV) 	+= xpc_uv.o
-xpc-$(CONFIG_X86_64)		+= xpc_uv.o
+xpc-y				:= xpc_main.o xpc_channel.o xpc_partition.o \
+				   xpc_uv.o
 
 obj-$(CONFIG_SGI_XP)		+= xpnet.o
diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h
index b8069eec18cb..06469b12aced 100644
--- a/drivers/misc/sgi-xp/xp.h
+++ b/drivers/misc/sgi-xp/xp.h
@@ -24,23 +24,6 @@
 #define is_uv()		0
 #endif
 
-#if defined CONFIG_IA64
-#include <asm/sn/arch.h>	/* defines is_shub1() and is_shub2() */
-#define is_shub()	ia64_platform_is("sn2")
-#endif
-
-#ifndef is_shub1
-#define is_shub1()	0
-#endif
-
-#ifndef is_shub2
-#define is_shub2()	0
-#endif
-
-#ifndef is_shub
-#define is_shub()	0
-#endif
-
 #ifdef USE_DBUG_ON
 #define DBUG_ON(condition)	BUG_ON(condition)
 #else
@@ -360,9 +343,7 @@ extern int xp_nofault_PIOR(void *);
 extern int xp_error_PIOR(void);
 
 extern struct device *xp;
-extern enum xp_retval xp_init_sn2(void);
 extern enum xp_retval xp_init_uv(void);
-extern void xp_exit_sn2(void);
 extern void xp_exit_uv(void);
 
 #endif /* _DRIVERS_MISC_SGIXP_XP_H */
diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c
index 6d7f557fd1c1..5fd94d836070 100644
--- a/drivers/misc/sgi-xp/xp_main.c
+++ b/drivers/misc/sgi-xp/xp_main.c
@@ -233,9 +233,7 @@ xp_init(void)
 	for (ch_number = 0; ch_number < XPC_MAX_NCHANNELS; ch_number++)
 		mutex_init(&xpc_registrations[ch_number].mutex);
 
-	if (is_shub())
-		ret = xp_init_sn2();
-	else if (is_uv())
+	if (is_uv())
 		ret = xp_init_uv();
 	else
 		ret = 0;
@@ -251,9 +249,7 @@ module_init(xp_init);
 void __exit
 xp_exit(void)
 {
-	if (is_shub())
-		xp_exit_sn2();
-	else if (is_uv())
+	if (is_uv())
 		xp_exit_uv();
 }
 
diff --git a/drivers/misc/sgi-xp/xp_nofault.S b/drivers/misc/sgi-xp/xp_nofault.S
deleted file mode 100644
index e38d43319429..000000000000
--- a/drivers/misc/sgi-xp/xp_nofault.S
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2004-2008 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-/*
- * The xp_nofault_PIOR function takes a pointer to a remote PIO register
- * and attempts to load and consume a value from it.  This function
- * will be registered as a nofault code block.  In the event that the
- * PIO read fails, the MCA handler will force the error to look
- * corrected and vector to the xp_error_PIOR which will return an error.
- *
- * The definition of "consumption" and the time it takes for an MCA
- * to surface is processor implementation specific.  This code
- * is sufficient on Itanium through the Montvale processor family.
- * It may need to be adjusted for future processor implementations.
- *
- *	extern int xp_nofault_PIOR(void *remote_register);
- */
-
-	.global xp_nofault_PIOR
-xp_nofault_PIOR:
-	mov	r8=r0			// Stage a success return value
-	ld8.acq	r9=[r32];;		// PIO Read the specified register
-	adds	r9=1,r9;;		// Add to force consumption
-	srlz.i;;			// Allow time for MCA to surface
-	br.ret.sptk.many b0;;		// Return success
-
-	.global xp_error_PIOR
-xp_error_PIOR:
-	mov	r8=1			// Return value of 1
-	br.ret.sptk.many b0;;		// Return failure
diff --git a/drivers/misc/sgi-xp/xp_sn2.c b/drivers/misc/sgi-xp/xp_sn2.c
deleted file mode 100644
index d8e463f87241..000000000000
--- a/drivers/misc/sgi-xp/xp_sn2.c
+++ /dev/null
@@ -1,190 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-/*
- * Cross Partition (XP) sn2-based functions.
- *
- *      Architecture specific implementation of common functions.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <asm/sn/bte.h>
-#include <asm/sn/sn_sal.h>
-#include "xp.h"
-
-/*
- * The export of xp_nofault_PIOR needs to happen here since it is defined
- * in drivers/misc/sgi-xp/xp_nofault.S. The target of the nofault read is
- * defined here.
- */
-EXPORT_SYMBOL_GPL(xp_nofault_PIOR);
-
-u64 xp_nofault_PIOR_target;
-EXPORT_SYMBOL_GPL(xp_nofault_PIOR_target);
-
-/*
- * Register a nofault code region which performs a cross-partition PIO read.
- * If the PIO read times out, the MCA handler will consume the error and
- * return to a kernel-provided instruction to indicate an error. This PIO read
- * exists because it is guaranteed to timeout if the destination is down
- * (amo operations do not timeout on at least some CPUs on Shubs <= v1.2,
- * which unfortunately we have to work around).
- */
-static enum xp_retval
-xp_register_nofault_code_sn2(void)
-{
-	int ret;
-	u64 func_addr;
-	u64 err_func_addr;
-
-	func_addr = *(u64 *)xp_nofault_PIOR;
-	err_func_addr = *(u64 *)xp_error_PIOR;
-	ret = sn_register_nofault_code(func_addr, err_func_addr, err_func_addr,
-				       1, 1);
-	if (ret != 0) {
-		dev_err(xp, "can't register nofault code, error=%d\n", ret);
-		return xpSalError;
-	}
-	/*
-	 * Setup the nofault PIO read target. (There is no special reason why
-	 * SH_IPI_ACCESS was selected.)
-	 */
-	if (is_shub1())
-		xp_nofault_PIOR_target = SH1_IPI_ACCESS;
-	else if (is_shub2())
-		xp_nofault_PIOR_target = SH2_IPI_ACCESS0;
-
-	return xpSuccess;
-}
-
-static void
-xp_unregister_nofault_code_sn2(void)
-{
-	u64 func_addr = *(u64 *)xp_nofault_PIOR;
-	u64 err_func_addr = *(u64 *)xp_error_PIOR;
-
-	/* unregister the PIO read nofault code region */
-	(void)sn_register_nofault_code(func_addr, err_func_addr,
-				       err_func_addr, 1, 0);
-}
-
-/*
- * Convert a virtual memory address to a physical memory address.
- */
-static unsigned long
-xp_pa_sn2(void *addr)
-{
-	return __pa(addr);
-}
-
-/*
- * Convert a global physical to a socket physical address.
- */
-static unsigned long
-xp_socket_pa_sn2(unsigned long gpa)
-{
-	return gpa;
-}
-
-/*
- * Wrapper for bte_copy().
- *
- *	dst_pa - physical address of the destination of the transfer.
- *	src_pa - physical address of the source of the transfer.
- *	len - number of bytes to transfer from source to destination.
- *
- * Note: xp_remote_memcpy_sn2() should never be called while holding a spinlock.
- */
-static enum xp_retval
-xp_remote_memcpy_sn2(unsigned long dst_pa, const unsigned long src_pa,
-		     size_t len)
-{
-	bte_result_t ret;
-
-	ret = bte_copy(src_pa, dst_pa, len, (BTE_NOTIFY | BTE_WACQUIRE), NULL);
-	if (ret == BTE_SUCCESS)
-		return xpSuccess;
-
-	if (is_shub2()) {
-		dev_err(xp, "bte_copy() on shub2 failed, error=0x%x dst_pa="
-			"0x%016lx src_pa=0x%016lx len=%ld\\n", ret, dst_pa,
-			src_pa, len);
-	} else {
-		dev_err(xp, "bte_copy() failed, error=%d dst_pa=0x%016lx "
-			"src_pa=0x%016lx len=%ld\\n", ret, dst_pa, src_pa, len);
-	}
-
-	return xpBteCopyError;
-}
-
-static int
-xp_cpu_to_nasid_sn2(int cpuid)
-{
-	return cpuid_to_nasid(cpuid);
-}
-
-static enum xp_retval
-xp_expand_memprotect_sn2(unsigned long phys_addr, unsigned long size)
-{
-	u64 nasid_array = 0;
-	int ret;
-
-	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1,
-				   &nasid_array);
-	if (ret != 0) {
-		dev_err(xp, "sn_change_memprotect(,, "
-			"SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret);
-		return xpSalError;
-	}
-	return xpSuccess;
-}
-
-static enum xp_retval
-xp_restrict_memprotect_sn2(unsigned long phys_addr, unsigned long size)
-{
-	u64 nasid_array = 0;
-	int ret;
-
-	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0,
-				   &nasid_array);
-	if (ret != 0) {
-		dev_err(xp, "sn_change_memprotect(,, "
-			"SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret);
-		return xpSalError;
-	}
-	return xpSuccess;
-}
-
-enum xp_retval
-xp_init_sn2(void)
-{
-	BUG_ON(!is_shub());
-
-	xp_max_npartitions = XP_MAX_NPARTITIONS_SN2;
-	xp_partition_id = sn_partition_id;
-	xp_region_size = sn_region_size;
-
-	xp_pa = xp_pa_sn2;
-	xp_socket_pa = xp_socket_pa_sn2;
-	xp_remote_memcpy = xp_remote_memcpy_sn2;
-	xp_cpu_to_nasid = xp_cpu_to_nasid_sn2;
-	xp_expand_memprotect = xp_expand_memprotect_sn2;
-	xp_restrict_memprotect = xp_restrict_memprotect_sn2;
-
-	return xp_register_nofault_code_sn2();
-}
-
-void
-xp_exit_sn2(void)
-{
-	BUG_ON(!is_shub());
-
-	xp_unregister_nofault_code_sn2();
-}
-
diff --git a/drivers/misc/sgi-xp/xp_uv.c b/drivers/misc/sgi-xp/xp_uv.c
index a0d093274dc0..5e335e93459c 100644
--- a/drivers/misc/sgi-xp/xp_uv.c
+++ b/drivers/misc/sgi-xp/xp_uv.c
@@ -151,9 +151,10 @@ xp_init_uv(void)
 	BUG_ON(!is_uv());
 
 	xp_max_npartitions = XP_MAX_NPARTITIONS_UV;
+#ifdef CONFIG_X86
 	xp_partition_id = sn_partition_id;
 	xp_region_size = sn_region_size;
-
+#endif
 	xp_pa = xp_pa_uv;
 	xp_socket_pa = xp_socket_pa_uv;
 	xp_remote_memcpy = xp_remote_memcpy_uv;
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h
index b94d5f767703..71db60edff65 100644
--- a/drivers/misc/sgi-xp/xpc.h
+++ b/drivers/misc/sgi-xp/xpc.h
@@ -71,14 +71,10 @@
  *     'SAL_nasids_size'. (Local partition's mask pointers are xpc_part_nasids
  *     and xpc_mach_nasids.)
  *
- *   vars	(ia64-sn2 only)
- *   vars part	(ia64-sn2 only)
- *
  *     Immediately following the mach_nasids mask are the XPC variables
  *     required by other partitions. First are those that are generic to all
  *     partitions (vars), followed on the next available cacheline by those
  *     which are partition specific (vars part). These are setup by XPC.
- *     (Local partition's vars pointers are xpc_vars and xpc_vars_part.)
  *
  * Note: Until 'ts_jiffies' is set non-zero, the partition XPC code has not been
  *       initialized.
@@ -92,9 +88,6 @@ struct xpc_rsvd_page {
 	u8 pad1[3];		/* align to next u64 in 1st 64-byte cacheline */
 	unsigned long ts_jiffies; /* timestamp when rsvd pg was setup by XPC */
 	union {
-		struct {
-			unsigned long vars_pa;	/* phys addr */
-		} sn2;
 		struct {
 			unsigned long heartbeat_gpa; /* phys addr */
 			unsigned long activate_gru_mq_desc_gpa; /* phys addr */
@@ -106,84 +99,14 @@ struct xpc_rsvd_page {
 
 #define XPC_RP_VERSION _XPC_VERSION(3, 0) /* version 3.0 of the reserved page */
 
-/*
- * Define the structures by which XPC variables can be exported to other
- * partitions. (There are two: struct xpc_vars and struct xpc_vars_part)
- */
-
-/*
- * The following structure describes the partition generic variables
- * needed by other partitions in order to properly initialize.
- *
- * struct xpc_vars version number also applies to struct xpc_vars_part.
- * Changes to either structure and/or related functionality should be
- * reflected by incrementing either the major or minor version numbers
- * of struct xpc_vars.
- */
-struct xpc_vars_sn2 {
-	u8 version;
-	u64 heartbeat;
-	DECLARE_BITMAP(heartbeating_to_mask, XP_MAX_NPARTITIONS_SN2);
-	u64 heartbeat_offline;	/* if 0, heartbeat should be changing */
-	int activate_IRQ_nasid;
-	int activate_IRQ_phys_cpuid;
-	unsigned long vars_part_pa;
-	unsigned long amos_page_pa;/* paddr of page of amos from MSPEC driver */
-	struct amo *amos_page;	/* vaddr of page of amos from MSPEC driver */
-};
-
-#define XPC_V_VERSION _XPC_VERSION(3, 1)    /* version 3.1 of the cross vars */
-
-/*
- * The following structure describes the per partition specific variables.
- *
- * An array of these structures, one per partition, will be defined. As a
- * partition becomes active XPC will copy the array entry corresponding to
- * itself from that partition. It is desirable that the size of this structure
- * evenly divides into a 128-byte cacheline, such that none of the entries in
- * this array crosses a 128-byte cacheline boundary. As it is now, each entry
- * occupies 64-bytes.
- */
-struct xpc_vars_part_sn2 {
-	u64 magic;
-
-	unsigned long openclose_args_pa; /* phys addr of open and close args */
-	unsigned long GPs_pa;	/* physical address of Get/Put values */
-
-	unsigned long chctl_amo_pa; /* physical address of chctl flags' amo */
-
-	int notify_IRQ_nasid;	/* nasid of where to send notify IRQs */
-	int notify_IRQ_phys_cpuid;	/* CPUID of where to send notify IRQs */
-
-	u8 nchannels;		/* #of defined channels supported */
-
-	u8 reserved[23];	/* pad to a full 64 bytes */
-};
-
-/*
- * The vars_part MAGIC numbers play a part in the first contact protocol.
- *
- * MAGIC1 indicates that the per partition specific variables for a remote
- * partition have been initialized by this partition.
- *
- * MAGIC2 indicates that this partition has pulled the remote partititions
- * per partition variables that pertain to this partition.
- */
-#define XPC_VP_MAGIC1_SN2 0x0053524156435058L /* 'XPCVARS\0'L (little endian) */
-#define XPC_VP_MAGIC2_SN2 0x0073726176435058L /* 'XPCvars\0'L (little endian) */
-
 /* the reserved page sizes and offsets */
 
 #define XPC_RP_HEADER_SIZE	L1_CACHE_ALIGN(sizeof(struct xpc_rsvd_page))
-#define XPC_RP_VARS_SIZE	L1_CACHE_ALIGN(sizeof(struct xpc_vars_sn2))
 
 #define XPC_RP_PART_NASIDS(_rp) ((unsigned long *)((u8 *)(_rp) + \
 				 XPC_RP_HEADER_SIZE))
 #define XPC_RP_MACH_NASIDS(_rp) (XPC_RP_PART_NASIDS(_rp) + \
 				 xpc_nasid_mask_nlongs)
-#define XPC_RP_VARS(_rp)	((struct xpc_vars_sn2 *) \
-				 (XPC_RP_MACH_NASIDS(_rp) + \
-				  xpc_nasid_mask_nlongs))
 
 
 /*
@@ -297,17 +220,6 @@ struct xpc_activate_mq_msg_chctl_opencomplete_uv {
 #define XPC_UNPACK_ARG1(_args)	(((u64)_args) & 0xffffffff)
 #define XPC_UNPACK_ARG2(_args)	((((u64)_args) >> 32) & 0xffffffff)
 
-/*
- * Define a Get/Put value pair (pointers) used with a message queue.
- */
-struct xpc_gp_sn2 {
-	s64 get;		/* Get value */
-	s64 put;		/* Put value */
-};
-
-#define XPC_GP_SIZE \
-		L1_CACHE_ALIGN(sizeof(struct xpc_gp_sn2) * XPC_MAX_NCHANNELS)
-
 /*
  * Define a structure that contains arguments associated with opening and
  * closing a channel.
@@ -340,30 +252,6 @@ struct xpc_fifo_head_uv {
 	int n_entries;
 };
 
-/*
- * Define a sn2 styled message.
- *
- * A user-defined message resides in the payload area. The max size of the
- * payload is defined by the user via xpc_connect().
- *
- * The size of a message entry (within a message queue) must be a 128-byte
- * cacheline sized multiple in order to facilitate the BTE transfer of messages
- * from one message queue to another.
- */
-struct xpc_msg_sn2 {
-	u8 flags;		/* FOR XPC INTERNAL USE ONLY */
-	u8 reserved[7];		/* FOR XPC INTERNAL USE ONLY */
-	s64 number;		/* FOR XPC INTERNAL USE ONLY */
-
-	u64 payload;		/* user defined portion of message */
-};
-
-/* struct xpc_msg_sn2 flags */
-
-#define	XPC_M_SN2_DONE		0x01	/* msg has been received/consumed */
-#define	XPC_M_SN2_READY		0x02	/* msg is ready to be sent */
-#define	XPC_M_SN2_INTERRUPT	0x04	/* send interrupt when msg consumed */
-
 /*
  * The format of a uv XPC notify_mq GRU message is as follows:
  *
@@ -390,20 +278,6 @@ struct xpc_notify_mq_msg_uv {
 	unsigned long payload;
 };
 
-/*
- * Define sn2's notify entry.
- *
- * This is used to notify a message's sender that their message was received
- * and consumed by the intended recipient.
- */
-struct xpc_notify_sn2 {
-	u8 type;		/* type of notification */
-
-	/* the following two fields are only used if type == XPC_N_CALL */
-	xpc_notify_func func;	/* user's notify function */
-	void *key;		/* pointer to user's key */
-};
-
 /* struct xpc_notify_sn2 type of notification */
 
 #define	XPC_N_CALL	0x01	/* notify function provided by user */
@@ -431,102 +305,6 @@ struct xpc_send_msg_slot_uv {
  * of these structures for each potential channel connection to that partition.
  */
 
-/*
- * The following is sn2 only.
- *
- * Each channel structure manages two message queues (circular buffers).
- * They are allocated at the time a channel connection is made. One of
- * these message queues (local_msgqueue) holds the locally created messages
- * that are destined for the remote partition. The other of these message
- * queues (remote_msgqueue) is a locally cached copy of the remote partition's
- * own local_msgqueue.
- *
- * The following is a description of the Get/Put pointers used to manage these
- * two message queues. Consider the local_msgqueue to be on one partition
- * and the remote_msgqueue to be its cached copy on another partition. A
- * description of what each of the lettered areas contains is included.
- *
- *
- *                     local_msgqueue      remote_msgqueue
- *
- *                        |/////////|      |/////////|
- *    w_remote_GP.get --> +---------+      |/////////|
- *                        |    F    |      |/////////|
- *     remote_GP.get  --> +---------+      +---------+ <-- local_GP->get
- *                        |         |      |         |
- *                        |         |      |    E    |
- *                        |         |      |         |
- *                        |         |      +---------+ <-- w_local_GP.get
- *                        |    B    |      |/////////|
- *                        |         |      |////D////|
- *                        |         |      |/////////|
- *                        |         |      +---------+ <-- w_remote_GP.put
- *                        |         |      |////C////|
- *      local_GP->put --> +---------+      +---------+ <-- remote_GP.put
- *                        |         |      |/////////|
- *                        |    A    |      |/////////|
- *                        |         |      |/////////|
- *     w_local_GP.put --> +---------+      |/////////|
- *                        |/////////|      |/////////|
- *
- *
- *	    ( remote_GP.[get|put] are cached copies of the remote
- *	      partition's local_GP->[get|put], and thus their values can
- *	      lag behind their counterparts on the remote partition. )
- *
- *
- *  A - Messages that have been allocated, but have not yet been sent to the
- *	remote partition.
- *
- *  B - Messages that have been sent, but have not yet been acknowledged by the
- *      remote partition as having been received.
- *
- *  C - Area that needs to be prepared for the copying of sent messages, by
- *	the clearing of the message flags of any previously received messages.
- *
- *  D - Area into which sent messages are to be copied from the remote
- *	partition's local_msgqueue and then delivered to their intended
- *	recipients. [ To allow for a multi-message copy, another pointer
- *	(next_msg_to_pull) has been added to keep track of the next message
- *	number needing to be copied (pulled). It chases after w_remote_GP.put.
- *	Any messages lying between w_local_GP.get and next_msg_to_pull have
- *	been copied and are ready to be delivered. ]
- *
- *  E - Messages that have been copied and delivered, but have not yet been
- *	acknowledged by the recipient as having been received.
- *
- *  F - Messages that have been acknowledged, but XPC has not yet notified the
- *	sender that the message was received by its intended recipient.
- *	This is also an area that needs to be prepared for the allocating of
- *	new messages, by the clearing of the message flags of the acknowledged
- *	messages.
- */
-
-struct xpc_channel_sn2 {
-	struct xpc_openclose_args *local_openclose_args; /* args passed on */
-					     /* opening or closing of channel */
-
-	void *local_msgqueue_base;	/* base address of kmalloc'd space */
-	struct xpc_msg_sn2 *local_msgqueue;	/* local message queue */
-	void *remote_msgqueue_base;	/* base address of kmalloc'd space */
-	struct xpc_msg_sn2 *remote_msgqueue; /* cached copy of remote */
-					   /* partition's local message queue */
-	unsigned long remote_msgqueue_pa; /* phys addr of remote partition's */
-					  /* local message queue */
-
-	struct xpc_notify_sn2 *notify_queue;/* notify queue for messages sent */
-
-	/* various flavors of local and remote Get/Put values */
-
-	struct xpc_gp_sn2 *local_GP;	/* local Get/Put values */
-	struct xpc_gp_sn2 remote_GP;	/* remote Get/Put values */
-	struct xpc_gp_sn2 w_local_GP;	/* working local Get/Put values */
-	struct xpc_gp_sn2 w_remote_GP;	/* working remote Get/Put values */
-	s64 next_msg_to_pull;	/* Put value of next msg to pull */
-
-	struct mutex msg_to_pull_mutex;	/* next msg to pull serialization */
-};
-
 struct xpc_channel_uv {
 	void *cached_notify_gru_mq_desc; /* remote partition's notify mq's */
 					 /* gru mq descriptor */
@@ -579,7 +357,6 @@ struct xpc_channel {
 	wait_queue_head_t idle_wq;	/* idle kthread wait queue */
 
 	union {
-		struct xpc_channel_sn2 sn2;
 		struct xpc_channel_uv uv;
 	} sn;
 
@@ -666,43 +443,6 @@ xpc_any_msg_chctl_flags_set(union xpc_channel_ctl_flags *chctl)
 	return 0;
 }
 
-/*
- * Manage channels on a partition basis. There is one of these structures
- * for each partition (a partition will never utilize the structure that
- * represents itself).
- */
-
-struct xpc_partition_sn2 {
-	unsigned long remote_amos_page_pa; /* paddr of partition's amos page */
-	int activate_IRQ_nasid;	/* active partition's act/deact nasid */
-	int activate_IRQ_phys_cpuid;	/* active part's act/deact phys cpuid */
-
-	unsigned long remote_vars_pa;	/* phys addr of partition's vars */
-	unsigned long remote_vars_part_pa; /* paddr of partition's vars part */
-	u8 remote_vars_version;	/* version# of partition's vars */
-
-	void *local_GPs_base;	/* base address of kmalloc'd space */
-	struct xpc_gp_sn2 *local_GPs;	/* local Get/Put values */
-	void *remote_GPs_base;	/* base address of kmalloc'd space */
-	struct xpc_gp_sn2 *remote_GPs;	/* copy of remote partition's local */
-					/* Get/Put values */
-	unsigned long remote_GPs_pa; /* phys addr of remote partition's local */
-				     /* Get/Put values */
-
-	void *local_openclose_args_base;   /* base address of kmalloc'd space */
-	struct xpc_openclose_args *local_openclose_args;      /* local's args */
-	unsigned long remote_openclose_args_pa;	/* phys addr of remote's args */
-
-	int notify_IRQ_nasid;	/* nasid of where to send notify IRQs */
-	int notify_IRQ_phys_cpuid;	/* CPUID of where to send notify IRQs */
-	char notify_IRQ_owner[8];	/* notify IRQ's owner's name */
-
-	struct amo *remote_chctl_amo_va; /* addr of remote chctl flags' amo */
-	struct amo *local_chctl_amo_va;	/* address of chctl flags' amo */
-
-	struct timer_list dropped_notify_IRQ_timer;	/* dropped IRQ timer */
-};
-
 struct xpc_partition_uv {
 	unsigned long heartbeat_gpa; /* phys addr of partition's heartbeat */
 	struct xpc_heartbeat_uv cached_heartbeat; /* cached copy of */
@@ -774,7 +514,6 @@ struct xpc_partition {
 	wait_queue_head_t channel_mgr_wq;	/* channel mgr's wait queue */
 
 	union {
-		struct xpc_partition_sn2 sn2;
 		struct xpc_partition_uv uv;
 	} sn;
 
@@ -854,14 +593,6 @@ struct xpc_arch_operations {
 #define XPC_P_SS_WTEARDOWN	0x02	/* waiting to teardown infrastructure */
 #define XPC_P_SS_TORNDOWN	0x03	/* infrastructure is torndown */
 
-/*
- * struct xpc_partition_sn2's dropped notify IRQ timer is set to wait the
- * following interval #of seconds before checking for dropped notify IRQs.
- * These can occur whenever an IRQ's associated amo write doesn't complete
- * until after the IRQ was received.
- */
-#define XPC_DROPPED_NOTIFY_IRQ_WAIT_INTERVAL	(0.25 * HZ)
-
 /* number of seconds to wait for other partitions to disengage */
 #define XPC_DISENGAGE_DEFAULT_TIMELIMIT		90
 
@@ -888,10 +619,6 @@ extern void xpc_activate_kthreads(struct xpc_channel *, int);
 extern void xpc_create_kthreads(struct xpc_channel *, int, int);
 extern void xpc_disconnect_wait(int);
 
-/* found in xpc_sn2.c */
-extern int xpc_init_sn2(void);
-extern void xpc_exit_sn2(void);
-
 /* found in xpc_uv.c */
 extern int xpc_init_uv(void);
 extern void xpc_exit_uv(void);
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index 83fc748a91a7..79a963105983 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -279,13 +279,6 @@ xpc_hb_checker(void *ignore)
 
 			dev_dbg(xpc_part, "checking remote heartbeats\n");
 			xpc_check_remote_hb();
-
-			/*
-			 * On sn2 we need to periodically recheck to ensure no
-			 * IRQ/amo pairs have been missed.
-			 */
-			if (is_shub())
-				force_IRQ = 1;
 		}
 
 		/* check for outstanding IRQs */
@@ -1050,9 +1043,7 @@ xpc_do_exit(enum xp_retval reason)
 
 	xpc_teardown_partitions();
 
-	if (is_shub())
-		xpc_exit_sn2();
-	else if (is_uv())
+	if (is_uv())
 		xpc_exit_uv();
 }
 
@@ -1235,21 +1226,7 @@ xpc_init(void)
 	dev_set_name(xpc_part, "part");
 	dev_set_name(xpc_chan, "chan");
 
-	if (is_shub()) {
-		/*
-		 * The ia64-sn2 architecture supports at most 64 partitions.
-		 * And the inability to unregister remote amos restricts us
-		 * further to only support exactly 64 partitions on this
-		 * architecture, no less.
-		 */
-		if (xp_max_npartitions != 64) {
-			dev_err(xpc_part, "max #of partitions not set to 64\n");
-			ret = -EINVAL;
-		} else {
-			ret = xpc_init_sn2();
-		}
-
-	} else if (is_uv()) {
+	if (is_uv()) {
 		ret = xpc_init_uv();
 
 	} else {
@@ -1335,9 +1312,7 @@ xpc_init(void)
 
 	xpc_teardown_partitions();
 out_1:
-	if (is_shub())
-		xpc_exit_sn2();
-	else if (is_uv())
+	if (is_uv())
 		xpc_exit_uv();
 	return ret;
 }
diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index 782ce95d3f17..21a04bc97d40 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -93,10 +93,6 @@ xpc_get_rsvd_page_pa(int nasid)
 		if (ret != xpNeedMoreInfo)
 			break;
 
-		/* !!! L1_CACHE_ALIGN() is only a sn2-bte_copy requirement */
-		if (is_shub())
-			len = L1_CACHE_ALIGN(len);
-
 		if (len > buf_len) {
 			kfree(buf_base);
 			buf_len = L1_CACHE_ALIGN(len);
@@ -452,7 +448,6 @@ xpc_discovery(void)
 		case 32:
 			max_regions *= 2;
 			region_size = 16;
-			DBUG_ON(!is_shub2());
 		}
 	}
 
diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c
deleted file mode 100644
index 0ae69b9390ce..000000000000
--- a/drivers/misc/sgi-xp/xpc_sn2.c
+++ /dev/null
@@ -1,2459 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2008-2009 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-/*
- * Cross Partition Communication (XPC) sn2-based functions.
- *
- *     Architecture specific implementation of common functions.
- *
- */
-
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <asm/uncached.h>
-#include <asm/sn/mspec.h>
-#include <asm/sn/sn_sal.h>
-#include "xpc.h"
-
-/*
- * Define the number of u64s required to represent all the C-brick nasids
- * as a bitmap.  The cross-partition kernel modules deal only with
- * C-brick nasids, thus the need for bitmaps which don't account for
- * odd-numbered (non C-brick) nasids.
- */
-#define XPC_MAX_PHYSNODES_SN2	(MAX_NUMALINK_NODES / 2)
-#define XP_NASID_MASK_BYTES_SN2	((XPC_MAX_PHYSNODES_SN2 + 7) / 8)
-#define XP_NASID_MASK_WORDS_SN2	((XPC_MAX_PHYSNODES_SN2 + 63) / 64)
-
-/*
- * Memory for XPC's amo variables is allocated by the MSPEC driver. These
- * pages are located in the lowest granule. The lowest granule uses 4k pages
- * for cached references and an alternate TLB handler to never provide a
- * cacheable mapping for the entire region. This will prevent speculative
- * reading of cached copies of our lines from being issued which will cause
- * a PI FSB Protocol error to be generated by the SHUB. For XPC, we need 64
- * amo variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of
- * NOTIFY IRQs, 128 amo variables (based on XP_NASID_MASK_WORDS_SN2) to identify
- * the senders of ACTIVATE IRQs, 1 amo variable to identify which remote
- * partitions (i.e., XPCs) consider themselves currently engaged with the
- * local XPC and 1 amo variable to request partition deactivation.
- */
-#define XPC_NOTIFY_IRQ_AMOS_SN2		0
-#define XPC_ACTIVATE_IRQ_AMOS_SN2	(XPC_NOTIFY_IRQ_AMOS_SN2 + \
-					 XP_MAX_NPARTITIONS_SN2)
-#define XPC_ENGAGED_PARTITIONS_AMO_SN2	(XPC_ACTIVATE_IRQ_AMOS_SN2 + \
-					 XP_NASID_MASK_WORDS_SN2)
-#define XPC_DEACTIVATE_REQUEST_AMO_SN2	(XPC_ENGAGED_PARTITIONS_AMO_SN2 + 1)
-
-/*
- * Buffer used to store a local copy of portions of a remote partition's
- * reserved page (either its header and part_nasids mask, or its vars).
- */
-static void *xpc_remote_copy_buffer_base_sn2;
-static char *xpc_remote_copy_buffer_sn2;
-
-static struct xpc_vars_sn2 *xpc_vars_sn2;
-static struct xpc_vars_part_sn2 *xpc_vars_part_sn2;
-
-static int
-xpc_setup_partitions_sn2(void)
-{
-	/* nothing needs to be done */
-	return 0;
-}
-
-static void
-xpc_teardown_partitions_sn2(void)
-{
-	/* nothing needs to be done */
-}
-
-/* SH_IPI_ACCESS shub register value on startup */
-static u64 xpc_sh1_IPI_access_sn2;
-static u64 xpc_sh2_IPI_access0_sn2;
-static u64 xpc_sh2_IPI_access1_sn2;
-static u64 xpc_sh2_IPI_access2_sn2;
-static u64 xpc_sh2_IPI_access3_sn2;
-
-/*
- * Change protections to allow IPI operations.
- */
-static void
-xpc_allow_IPI_ops_sn2(void)
-{
-	int node;
-	int nasid;
-
-	/* !!! The following should get moved into SAL. */
-	if (is_shub2()) {
-		xpc_sh2_IPI_access0_sn2 =
-		    (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS0));
-		xpc_sh2_IPI_access1_sn2 =
-		    (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS1));
-		xpc_sh2_IPI_access2_sn2 =
-		    (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS2));
-		xpc_sh2_IPI_access3_sn2 =
-		    (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH2_IPI_ACCESS3));
-
-		for_each_online_node(node) {
-			nasid = cnodeid_to_nasid(node);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
-			      -1UL);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
-			      -1UL);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
-			      -1UL);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
-			      -1UL);
-		}
-	} else {
-		xpc_sh1_IPI_access_sn2 =
-		    (u64)HUB_L((u64 *)LOCAL_MMR_ADDR(SH1_IPI_ACCESS));
-
-		for_each_online_node(node) {
-			nasid = cnodeid_to_nasid(node);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
-			      -1UL);
-		}
-	}
-}
-
-/*
- * Restrict protections to disallow IPI operations.
- */
-static void
-xpc_disallow_IPI_ops_sn2(void)
-{
-	int node;
-	int nasid;
-
-	/* !!! The following should get moved into SAL. */
-	if (is_shub2()) {
-		for_each_online_node(node) {
-			nasid = cnodeid_to_nasid(node);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
-			      xpc_sh2_IPI_access0_sn2);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
-			      xpc_sh2_IPI_access1_sn2);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
-			      xpc_sh2_IPI_access2_sn2);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
-			      xpc_sh2_IPI_access3_sn2);
-		}
-	} else {
-		for_each_online_node(node) {
-			nasid = cnodeid_to_nasid(node);
-			HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
-			      xpc_sh1_IPI_access_sn2);
-		}
-	}
-}
-
-/*
- * The following set of functions are used for the sending and receiving of
- * IRQs (also known as IPIs). There are two flavors of IRQs, one that is
- * associated with partition activity (SGI_XPC_ACTIVATE) and the other that
- * is associated with channel activity (SGI_XPC_NOTIFY).
- */
-
-static u64
-xpc_receive_IRQ_amo_sn2(struct amo *amo)
-{
-	return FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_CLEAR);
-}
-
-static enum xp_retval
-xpc_send_IRQ_sn2(struct amo *amo, u64 flag, int nasid, int phys_cpuid,
-		 int vector)
-{
-	int ret = 0;
-	unsigned long irq_flags;
-
-	local_irq_save(irq_flags);
-
-	FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR, flag);
-	sn_send_IPI_phys(nasid, phys_cpuid, vector, 0);
-
-	/*
-	 * We must always use the nofault function regardless of whether we
-	 * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
-	 * didn't, we'd never know that the other partition is down and would
-	 * keep sending IRQs and amos to it until the heartbeat times out.
-	 */
-	ret = xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->variable),
-						     xp_nofault_PIOR_target));
-
-	local_irq_restore(irq_flags);
-
-	return (ret == 0) ? xpSuccess : xpPioReadError;
-}
-
-static struct amo *
-xpc_init_IRQ_amo_sn2(int index)
-{
-	struct amo *amo = xpc_vars_sn2->amos_page + index;
-
-	(void)xpc_receive_IRQ_amo_sn2(amo);	/* clear amo variable */
-	return amo;
-}
-
-/*
- * Functions associated with SGI_XPC_ACTIVATE IRQ.
- */
-
-/*
- * Notify the heartbeat check thread that an activate IRQ has been received.
- */
-static irqreturn_t
-xpc_handle_activate_IRQ_sn2(int irq, void *dev_id)
-{
-	unsigned long irq_flags;
-
-	spin_lock_irqsave(&xpc_activate_IRQ_rcvd_lock, irq_flags);
-	xpc_activate_IRQ_rcvd++;
-	spin_unlock_irqrestore(&xpc_activate_IRQ_rcvd_lock, irq_flags);
-
-	wake_up_interruptible(&xpc_activate_IRQ_wq);
-	return IRQ_HANDLED;
-}
-
-/*
- * Flag the appropriate amo variable and send an IRQ to the specified node.
- */
-static void
-xpc_send_activate_IRQ_sn2(unsigned long amos_page_pa, int from_nasid,
-			  int to_nasid, int to_phys_cpuid)
-{
-	struct amo *amos = (struct amo *)__va(amos_page_pa +
-					      (XPC_ACTIVATE_IRQ_AMOS_SN2 *
-					      sizeof(struct amo)));
-
-	(void)xpc_send_IRQ_sn2(&amos[BIT_WORD(from_nasid / 2)],
-			       BIT_MASK(from_nasid / 2), to_nasid,
-			       to_phys_cpuid, SGI_XPC_ACTIVATE);
-}
-
-static void
-xpc_send_local_activate_IRQ_sn2(int from_nasid)
-{
-	unsigned long irq_flags;
-	struct amo *amos = (struct amo *)__va(xpc_vars_sn2->amos_page_pa +
-					      (XPC_ACTIVATE_IRQ_AMOS_SN2 *
-					      sizeof(struct amo)));
-
-	/* fake the sending and receipt of an activate IRQ from remote nasid */
-	FETCHOP_STORE_OP(TO_AMO((u64)&amos[BIT_WORD(from_nasid / 2)].variable),
-			 FETCHOP_OR, BIT_MASK(from_nasid / 2));
-
-	spin_lock_irqsave(&xpc_activate_IRQ_rcvd_lock, irq_flags);
-	xpc_activate_IRQ_rcvd++;
-	spin_unlock_irqrestore(&xpc_activate_IRQ_rcvd_lock, irq_flags);
-
-	wake_up_interruptible(&xpc_activate_IRQ_wq);
-}
-
-/*
- * Functions associated with SGI_XPC_NOTIFY IRQ.
- */
-
-/*
- * Check to see if any chctl flags were sent from the specified partition.
- */
-static void
-xpc_check_for_sent_chctl_flags_sn2(struct xpc_partition *part)
-{
-	union xpc_channel_ctl_flags chctl;
-	unsigned long irq_flags;
-
-	chctl.all_flags = xpc_receive_IRQ_amo_sn2(part->sn.sn2.
-						  local_chctl_amo_va);
-	if (chctl.all_flags == 0)
-		return;
-
-	spin_lock_irqsave(&part->chctl_lock, irq_flags);
-	part->chctl.all_flags |= chctl.all_flags;
-	spin_unlock_irqrestore(&part->chctl_lock, irq_flags);
-
-	dev_dbg(xpc_chan, "received notify IRQ from partid=%d, chctl.all_flags="
-		"0x%llx\n", XPC_PARTID(part), chctl.all_flags);
-
-	xpc_wakeup_channel_mgr(part);
-}
-
-/*
- * Handle the receipt of a SGI_XPC_NOTIFY IRQ by seeing whether the specified
- * partition actually sent it. Since SGI_XPC_NOTIFY IRQs may be shared by more
- * than one partition, we use an amo structure per partition to indicate
- * whether a partition has sent an IRQ or not.  If it has, then wake up the
- * associated kthread to handle it.
- *
- * All SGI_XPC_NOTIFY IRQs received by XPC are the result of IRQs sent by XPC
- * running on other partitions.
- *
- * Noteworthy Arguments:
- *
- *	irq - Interrupt ReQuest number. NOT USED.
- *
- *	dev_id - partid of IRQ's potential sender.
- */
-static irqreturn_t
-xpc_handle_notify_IRQ_sn2(int irq, void *dev_id)
-{
-	short partid = (short)(u64)dev_id;
-	struct xpc_partition *part = &xpc_partitions[partid];
-
-	DBUG_ON(partid < 0 || partid >= XP_MAX_NPARTITIONS_SN2);
-
-	if (xpc_part_ref(part)) {
-		xpc_check_for_sent_chctl_flags_sn2(part);
-
-		xpc_part_deref(part);
-	}
-	return IRQ_HANDLED;
-}
-
-/*
- * Check to see if xpc_handle_notify_IRQ_sn2() dropped any IRQs on the floor
- * because the write to their associated amo variable completed after the IRQ
- * was received.
- */
-static void
-xpc_check_for_dropped_notify_IRQ_sn2(struct timer_list *t)
-{
-	struct xpc_partition *part =
-		from_timer(part, t, sn.sn2.dropped_notify_IRQ_timer);
-
-	if (xpc_part_ref(part)) {
-		xpc_check_for_sent_chctl_flags_sn2(part);
-
-		t->expires = jiffies + XPC_DROPPED_NOTIFY_IRQ_WAIT_INTERVAL;
-		add_timer(t);
-		xpc_part_deref(part);
-	}
-}
-
-/*
- * Send a notify IRQ to the remote partition that is associated with the
- * specified channel.
- */
-static void
-xpc_send_notify_IRQ_sn2(struct xpc_channel *ch, u8 chctl_flag,
-			char *chctl_flag_string, unsigned long *irq_flags)
-{
-	struct xpc_partition *part = &xpc_partitions[ch->partid];
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	union xpc_channel_ctl_flags chctl = { 0 };
-	enum xp_retval ret;
-
-	if (likely(part->act_state != XPC_P_AS_DEACTIVATING)) {
-		chctl.flags[ch->number] = chctl_flag;
-		ret = xpc_send_IRQ_sn2(part_sn2->remote_chctl_amo_va,
-				       chctl.all_flags,
-				       part_sn2->notify_IRQ_nasid,
-				       part_sn2->notify_IRQ_phys_cpuid,
-				       SGI_XPC_NOTIFY);
-		dev_dbg(xpc_chan, "%s sent to partid=%d, channel=%d, ret=%d\n",
-			chctl_flag_string, ch->partid, ch->number, ret);
-		if (unlikely(ret != xpSuccess)) {
-			if (irq_flags != NULL)
-				spin_unlock_irqrestore(&ch->lock, *irq_flags);
-			XPC_DEACTIVATE_PARTITION(part, ret);
-			if (irq_flags != NULL)
-				spin_lock_irqsave(&ch->lock, *irq_flags);
-		}
-	}
-}
-
-#define XPC_SEND_NOTIFY_IRQ_SN2(_ch, _ipi_f, _irq_f) \
-		xpc_send_notify_IRQ_sn2(_ch, _ipi_f, #_ipi_f, _irq_f)
-
-/*
- * Make it look like the remote partition, which is associated with the
- * specified channel, sent us a notify IRQ. This faked IRQ will be handled
- * by xpc_check_for_dropped_notify_IRQ_sn2().
- */
-static void
-xpc_send_local_notify_IRQ_sn2(struct xpc_channel *ch, u8 chctl_flag,
-			      char *chctl_flag_string)
-{
-	struct xpc_partition *part = &xpc_partitions[ch->partid];
-	union xpc_channel_ctl_flags chctl = { 0 };
-
-	chctl.flags[ch->number] = chctl_flag;
-	FETCHOP_STORE_OP(TO_AMO((u64)&part->sn.sn2.local_chctl_amo_va->
-				variable), FETCHOP_OR, chctl.all_flags);
-	dev_dbg(xpc_chan, "%s sent local from partid=%d, channel=%d\n",
-		chctl_flag_string, ch->partid, ch->number);
-}
-
-#define XPC_SEND_LOCAL_NOTIFY_IRQ_SN2(_ch, _ipi_f) \
-		xpc_send_local_notify_IRQ_sn2(_ch, _ipi_f, #_ipi_f)
-
-static void
-xpc_send_chctl_closerequest_sn2(struct xpc_channel *ch,
-				unsigned long *irq_flags)
-{
-	struct xpc_openclose_args *args = ch->sn.sn2.local_openclose_args;
-
-	args->reason = ch->reason;
-	XPC_SEND_NOTIFY_IRQ_SN2(ch, XPC_CHCTL_CLOSEREQUEST, irq_flags);
-}
-
-static void
-xpc_send_chctl_closereply_sn2(struct xpc_channel *ch, unsigned long *irq_flags)
-{
-	XPC_SEND_NOTIFY_IRQ_SN2(ch, XPC_CHCTL_CLOSEREPLY, irq_flags);
-}
-
-static void
-xpc_send_chctl_openrequest_sn2(struct xpc_channel *ch, unsigned long *irq_flags)
-{
-	struct xpc_openclose_args *args = ch->sn.sn2.local_openclose_args;
-
-	args->entry_size = ch->entry_size;
-	args->local_nentries = ch->local_nentries;
-	XPC_SEND_NOTIFY_IRQ_SN2(ch, XPC_CHCTL_OPENREQUEST, irq_flags);
-}
-
-static void
-xpc_send_chctl_openreply_sn2(struct xpc_channel *ch, unsigned long *irq_flags)
-{
-	struct xpc_openclose_args *args = ch->sn.sn2.local_openclose_args;
-
-	args->remote_nentries = ch->remote_nentries;
-	args->local_nentries = ch->local_nentries;
-	args->local_msgqueue_pa = xp_pa(ch->sn.sn2.local_msgqueue);
-	XPC_SEND_NOTIFY_IRQ_SN2(ch, XPC_CHCTL_OPENREPLY, irq_flags);
-}
-
-static void
-xpc_send_chctl_opencomplete_sn2(struct xpc_channel *ch,
-				unsigned long *irq_flags)
-{
-	XPC_SEND_NOTIFY_IRQ_SN2(ch, XPC_CHCTL_OPENCOMPLETE, irq_flags);
-}
-
-static void
-xpc_send_chctl_msgrequest_sn2(struct xpc_channel *ch)
-{
-	XPC_SEND_NOTIFY_IRQ_SN2(ch, XPC_CHCTL_MSGREQUEST, NULL);
-}
-
-static void
-xpc_send_chctl_local_msgrequest_sn2(struct xpc_channel *ch)
-{
-	XPC_SEND_LOCAL_NOTIFY_IRQ_SN2(ch, XPC_CHCTL_MSGREQUEST);
-}
-
-static enum xp_retval
-xpc_save_remote_msgqueue_pa_sn2(struct xpc_channel *ch,
-				unsigned long msgqueue_pa)
-{
-	ch->sn.sn2.remote_msgqueue_pa = msgqueue_pa;
-	return xpSuccess;
-}
-
-/*
- * This next set of functions are used to keep track of when a partition is
- * potentially engaged in accessing memory belonging to another partition.
- */
-
-static void
-xpc_indicate_partition_engaged_sn2(struct xpc_partition *part)
-{
-	unsigned long irq_flags;
-	struct amo *amo = (struct amo *)__va(part->sn.sn2.remote_amos_page_pa +
-					     (XPC_ENGAGED_PARTITIONS_AMO_SN2 *
-					     sizeof(struct amo)));
-
-	local_irq_save(irq_flags);
-
-	/* set bit corresponding to our partid in remote partition's amo */
-	FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR,
-			 BIT(sn_partition_id));
-
-	/*
-	 * We must always use the nofault function regardless of whether we
-	 * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
-	 * didn't, we'd never know that the other partition is down and would
-	 * keep sending IRQs and amos to it until the heartbeat times out.
-	 */
-	(void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
-							       variable),
-						     xp_nofault_PIOR_target));
-
-	local_irq_restore(irq_flags);
-}
-
-static void
-xpc_indicate_partition_disengaged_sn2(struct xpc_partition *part)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	unsigned long irq_flags;
-	struct amo *amo = (struct amo *)__va(part_sn2->remote_amos_page_pa +
-					     (XPC_ENGAGED_PARTITIONS_AMO_SN2 *
-					     sizeof(struct amo)));
-
-	local_irq_save(irq_flags);
-
-	/* clear bit corresponding to our partid in remote partition's amo */
-	FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
-			 ~BIT(sn_partition_id));
-
-	/*
-	 * We must always use the nofault function regardless of whether we
-	 * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
-	 * didn't, we'd never know that the other partition is down and would
-	 * keep sending IRQs and amos to it until the heartbeat times out.
-	 */
-	(void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
-							       variable),
-						     xp_nofault_PIOR_target));
-
-	local_irq_restore(irq_flags);
-
-	/*
-	 * Send activate IRQ to get other side to see that we've cleared our
-	 * bit in their engaged partitions amo.
-	 */
-	xpc_send_activate_IRQ_sn2(part_sn2->remote_amos_page_pa,
-				  cnodeid_to_nasid(0),
-				  part_sn2->activate_IRQ_nasid,
-				  part_sn2->activate_IRQ_phys_cpuid);
-}
-
-static void
-xpc_assume_partition_disengaged_sn2(short partid)
-{
-	struct amo *amo = xpc_vars_sn2->amos_page +
-			  XPC_ENGAGED_PARTITIONS_AMO_SN2;
-
-	/* clear bit(s) based on partid mask in our partition's amo */
-	FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
-			 ~BIT(partid));
-}
-
-static int
-xpc_partition_engaged_sn2(short partid)
-{
-	struct amo *amo = xpc_vars_sn2->amos_page +
-			  XPC_ENGAGED_PARTITIONS_AMO_SN2;
-
-	/* our partition's amo variable ANDed with partid mask */
-	return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) &
-		BIT(partid)) != 0;
-}
-
-static int
-xpc_any_partition_engaged_sn2(void)
-{
-	struct amo *amo = xpc_vars_sn2->amos_page +
-			  XPC_ENGAGED_PARTITIONS_AMO_SN2;
-
-	/* our partition's amo variable */
-	return FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) != 0;
-}
-
-/* original protection values for each node */
-static u64 xpc_prot_vec_sn2[MAX_NUMNODES];
-
-/*
- * Change protections to allow amo operations on non-Shub 1.1 systems.
- */
-static enum xp_retval
-xpc_allow_amo_ops_sn2(struct amo *amos_page)
-{
-	enum xp_retval ret = xpSuccess;
-
-	/*
-	 * On SHUB 1.1, we cannot call sn_change_memprotect() since the BIST
-	 * collides with memory operations. On those systems we call
-	 * xpc_allow_amo_ops_shub_wars_1_1_sn2() instead.
-	 */
-	if (!enable_shub_wars_1_1())
-		ret = xp_expand_memprotect(ia64_tpa((u64)amos_page), PAGE_SIZE);
-
-	return ret;
-}
-
-/*
- * Change protections to allow amo operations on Shub 1.1 systems.
- */
-static void
-xpc_allow_amo_ops_shub_wars_1_1_sn2(void)
-{
-	int node;
-	int nasid;
-
-	if (!enable_shub_wars_1_1())
-		return;
-
-	for_each_online_node(node) {
-		nasid = cnodeid_to_nasid(node);
-		/* save current protection values */
-		xpc_prot_vec_sn2[node] =
-		    (u64)HUB_L((u64 *)GLOBAL_MMR_ADDR(nasid,
-						  SH1_MD_DQLP_MMR_DIR_PRIVEC0));
-		/* open up everything */
-		HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid,
-					     SH1_MD_DQLP_MMR_DIR_PRIVEC0),
-		      -1UL);
-		HUB_S((u64 *)GLOBAL_MMR_ADDR(nasid,
-					     SH1_MD_DQRP_MMR_DIR_PRIVEC0),
-		      -1UL);
-	}
-}
-
-static enum xp_retval
-xpc_get_partition_rsvd_page_pa_sn2(void *buf, u64 *cookie, unsigned long *rp_pa,
-				   size_t *len)
-{
-	s64 status;
-	enum xp_retval ret;
-
-	status = sn_partition_reserved_page_pa((u64)buf, cookie,
-			(u64 *)rp_pa, (u64 *)len);
-	if (status == SALRET_OK)
-		ret = xpSuccess;
-	else if (status == SALRET_MORE_PASSES)
-		ret = xpNeedMoreInfo;
-	else
-		ret = xpSalError;
-
-	return ret;
-}
-
-
-static int
-xpc_setup_rsvd_page_sn2(struct xpc_rsvd_page *rp)
-{
-	struct amo *amos_page;
-	int i;
-	int ret;
-
-	xpc_vars_sn2 = XPC_RP_VARS(rp);
-
-	rp->sn.sn2.vars_pa = xp_pa(xpc_vars_sn2);
-
-	/* vars_part array follows immediately after vars */
-	xpc_vars_part_sn2 = (struct xpc_vars_part_sn2 *)((u8 *)XPC_RP_VARS(rp) +
-							 XPC_RP_VARS_SIZE);
-
-	/*
-	 * Before clearing xpc_vars_sn2, see if a page of amos had been
-	 * previously allocated. If not we'll need to allocate one and set
-	 * permissions so that cross-partition amos are allowed.
-	 *
-	 * The allocated amo page needs MCA reporting to remain disabled after
-	 * XPC has unloaded.  To make this work, we keep a copy of the pointer
-	 * to this page (i.e., amos_page) in the struct xpc_vars_sn2 structure,
-	 * which is pointed to by the reserved page, and re-use that saved copy
-	 * on subsequent loads of XPC. This amo page is never freed, and its
-	 * memory protections are never restricted.
-	 */
-	amos_page = xpc_vars_sn2->amos_page;
-	if (amos_page == NULL) {
-		amos_page = (struct amo *)TO_AMO(uncached_alloc_page(0, 1));
-		if (amos_page == NULL) {
-			dev_err(xpc_part, "can't allocate page of amos\n");
-			return -ENOMEM;
-		}
-
-		/*
-		 * Open up amo-R/W to cpu.  This is done on Shub 1.1 systems
-		 * when xpc_allow_amo_ops_shub_wars_1_1_sn2() is called.
-		 */
-		ret = xpc_allow_amo_ops_sn2(amos_page);
-		if (ret != xpSuccess) {
-			dev_err(xpc_part, "can't allow amo operations\n");
-			uncached_free_page(__IA64_UNCACHED_OFFSET |
-					   TO_PHYS((u64)amos_page), 1);
-			return -EPERM;
-		}
-	}
-
-	/* clear xpc_vars_sn2 */
-	memset(xpc_vars_sn2, 0, sizeof(struct xpc_vars_sn2));
-
-	xpc_vars_sn2->version = XPC_V_VERSION;
-	xpc_vars_sn2->activate_IRQ_nasid = cpuid_to_nasid(0);
-	xpc_vars_sn2->activate_IRQ_phys_cpuid = cpu_physical_id(0);
-	xpc_vars_sn2->vars_part_pa = xp_pa(xpc_vars_part_sn2);
-	xpc_vars_sn2->amos_page_pa = ia64_tpa((u64)amos_page);
-	xpc_vars_sn2->amos_page = amos_page;	/* save for next load of XPC */
-
-	/* clear xpc_vars_part_sn2 */
-	memset((u64 *)xpc_vars_part_sn2, 0, sizeof(struct xpc_vars_part_sn2) *
-	       XP_MAX_NPARTITIONS_SN2);
-
-	/* initialize the activate IRQ related amo variables */
-	for (i = 0; i < xpc_nasid_mask_nlongs; i++)
-		(void)xpc_init_IRQ_amo_sn2(XPC_ACTIVATE_IRQ_AMOS_SN2 + i);
-
-	/* initialize the engaged remote partitions related amo variables */
-	(void)xpc_init_IRQ_amo_sn2(XPC_ENGAGED_PARTITIONS_AMO_SN2);
-	(void)xpc_init_IRQ_amo_sn2(XPC_DEACTIVATE_REQUEST_AMO_SN2);
-
-	return 0;
-}
-
-static int
-xpc_hb_allowed_sn2(short partid, void *heartbeating_to_mask)
-{
-	return test_bit(partid, heartbeating_to_mask);
-}
-
-static void
-xpc_allow_hb_sn2(short partid)
-{
-	DBUG_ON(xpc_vars_sn2 == NULL);
-	set_bit(partid, xpc_vars_sn2->heartbeating_to_mask);
-}
-
-static void
-xpc_disallow_hb_sn2(short partid)
-{
-	DBUG_ON(xpc_vars_sn2 == NULL);
-	clear_bit(partid, xpc_vars_sn2->heartbeating_to_mask);
-}
-
-static void
-xpc_disallow_all_hbs_sn2(void)
-{
-	DBUG_ON(xpc_vars_sn2 == NULL);
-	bitmap_zero(xpc_vars_sn2->heartbeating_to_mask, xp_max_npartitions);
-}
-
-static void
-xpc_increment_heartbeat_sn2(void)
-{
-	xpc_vars_sn2->heartbeat++;
-}
-
-static void
-xpc_offline_heartbeat_sn2(void)
-{
-	xpc_increment_heartbeat_sn2();
-	xpc_vars_sn2->heartbeat_offline = 1;
-}
-
-static void
-xpc_online_heartbeat_sn2(void)
-{
-	xpc_increment_heartbeat_sn2();
-	xpc_vars_sn2->heartbeat_offline = 0;
-}
-
-static void
-xpc_heartbeat_init_sn2(void)
-{
-	DBUG_ON(xpc_vars_sn2 == NULL);
-
-	bitmap_zero(xpc_vars_sn2->heartbeating_to_mask, XP_MAX_NPARTITIONS_SN2);
-	xpc_online_heartbeat_sn2();
-}
-
-static void
-xpc_heartbeat_exit_sn2(void)
-{
-	xpc_offline_heartbeat_sn2();
-}
-
-static enum xp_retval
-xpc_get_remote_heartbeat_sn2(struct xpc_partition *part)
-{
-	struct xpc_vars_sn2 *remote_vars;
-	enum xp_retval ret;
-
-	remote_vars = (struct xpc_vars_sn2 *)xpc_remote_copy_buffer_sn2;
-
-	/* pull the remote vars structure that contains the heartbeat */
-	ret = xp_remote_memcpy(xp_pa(remote_vars),
-			       part->sn.sn2.remote_vars_pa,
-			       XPC_RP_VARS_SIZE);
-	if (ret != xpSuccess)
-		return ret;
-
-	dev_dbg(xpc_part, "partid=%d, heartbeat=%lld, last_heartbeat=%lld, "
-		"heartbeat_offline=%lld, HB_mask[0]=0x%lx\n", XPC_PARTID(part),
-		remote_vars->heartbeat, part->last_heartbeat,
-		remote_vars->heartbeat_offline,
-		remote_vars->heartbeating_to_mask[0]);
-
-	if ((remote_vars->heartbeat == part->last_heartbeat &&
-	    !remote_vars->heartbeat_offline) ||
-	    !xpc_hb_allowed_sn2(sn_partition_id,
-				remote_vars->heartbeating_to_mask)) {
-		ret = xpNoHeartbeat;
-	} else {
-		part->last_heartbeat = remote_vars->heartbeat;
-	}
-
-	return ret;
-}
-
-/*
- * Get a copy of the remote partition's XPC variables from the reserved page.
- *
- * remote_vars points to a buffer that is cacheline aligned for BTE copies and
- * assumed to be of size XPC_RP_VARS_SIZE.
- */
-static enum xp_retval
-xpc_get_remote_vars_sn2(unsigned long remote_vars_pa,
-			struct xpc_vars_sn2 *remote_vars)
-{
-	enum xp_retval ret;
-
-	if (remote_vars_pa == 0)
-		return xpVarsNotSet;
-
-	/* pull over the cross partition variables */
-	ret = xp_remote_memcpy(xp_pa(remote_vars), remote_vars_pa,
-			       XPC_RP_VARS_SIZE);
-	if (ret != xpSuccess)
-		return ret;
-
-	if (XPC_VERSION_MAJOR(remote_vars->version) !=
-	    XPC_VERSION_MAJOR(XPC_V_VERSION)) {
-		return xpBadVersion;
-	}
-
-	return xpSuccess;
-}
-
-static void
-xpc_request_partition_activation_sn2(struct xpc_rsvd_page *remote_rp,
-				     unsigned long remote_rp_pa, int nasid)
-{
-	xpc_send_local_activate_IRQ_sn2(nasid);
-}
-
-static void
-xpc_request_partition_reactivation_sn2(struct xpc_partition *part)
-{
-	xpc_send_local_activate_IRQ_sn2(part->sn.sn2.activate_IRQ_nasid);
-}
-
-static void
-xpc_request_partition_deactivation_sn2(struct xpc_partition *part)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	unsigned long irq_flags;
-	struct amo *amo = (struct amo *)__va(part_sn2->remote_amos_page_pa +
-					     (XPC_DEACTIVATE_REQUEST_AMO_SN2 *
-					     sizeof(struct amo)));
-
-	local_irq_save(irq_flags);
-
-	/* set bit corresponding to our partid in remote partition's amo */
-	FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR,
-			 BIT(sn_partition_id));
-
-	/*
-	 * We must always use the nofault function regardless of whether we
-	 * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
-	 * didn't, we'd never know that the other partition is down and would
-	 * keep sending IRQs and amos to it until the heartbeat times out.
-	 */
-	(void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
-							       variable),
-						     xp_nofault_PIOR_target));
-
-	local_irq_restore(irq_flags);
-
-	/*
-	 * Send activate IRQ to get other side to see that we've set our
-	 * bit in their deactivate request amo.
-	 */
-	xpc_send_activate_IRQ_sn2(part_sn2->remote_amos_page_pa,
-				  cnodeid_to_nasid(0),
-				  part_sn2->activate_IRQ_nasid,
-				  part_sn2->activate_IRQ_phys_cpuid);
-}
-
-static void
-xpc_cancel_partition_deactivation_request_sn2(struct xpc_partition *part)
-{
-	unsigned long irq_flags;
-	struct amo *amo = (struct amo *)__va(part->sn.sn2.remote_amos_page_pa +
-					     (XPC_DEACTIVATE_REQUEST_AMO_SN2 *
-					     sizeof(struct amo)));
-
-	local_irq_save(irq_flags);
-
-	/* clear bit corresponding to our partid in remote partition's amo */
-	FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
-			 ~BIT(sn_partition_id));
-
-	/*
-	 * We must always use the nofault function regardless of whether we
-	 * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
-	 * didn't, we'd never know that the other partition is down and would
-	 * keep sending IRQs and amos to it until the heartbeat times out.
-	 */
-	(void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
-							       variable),
-						     xp_nofault_PIOR_target));
-
-	local_irq_restore(irq_flags);
-}
-
-static int
-xpc_partition_deactivation_requested_sn2(short partid)
-{
-	struct amo *amo = xpc_vars_sn2->amos_page +
-			  XPC_DEACTIVATE_REQUEST_AMO_SN2;
-
-	/* our partition's amo variable ANDed with partid mask */
-	return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) &
-		BIT(partid)) != 0;
-}
-
-/*
- * Update the remote partition's info.
- */
-static void
-xpc_update_partition_info_sn2(struct xpc_partition *part, u8 remote_rp_version,
-			      unsigned long *remote_rp_ts_jiffies,
-			      unsigned long remote_rp_pa,
-			      unsigned long remote_vars_pa,
-			      struct xpc_vars_sn2 *remote_vars)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-
-	part->remote_rp_version = remote_rp_version;
-	dev_dbg(xpc_part, "  remote_rp_version = 0x%016x\n",
-		part->remote_rp_version);
-
-	part->remote_rp_ts_jiffies = *remote_rp_ts_jiffies;
-	dev_dbg(xpc_part, "  remote_rp_ts_jiffies = 0x%016lx\n",
-		part->remote_rp_ts_jiffies);
-
-	part->remote_rp_pa = remote_rp_pa;
-	dev_dbg(xpc_part, "  remote_rp_pa = 0x%016lx\n", part->remote_rp_pa);
-
-	part_sn2->remote_vars_pa = remote_vars_pa;
-	dev_dbg(xpc_part, "  remote_vars_pa = 0x%016lx\n",
-		part_sn2->remote_vars_pa);
-
-	part->last_heartbeat = remote_vars->heartbeat - 1;
-	dev_dbg(xpc_part, "  last_heartbeat = 0x%016llx\n",
-		part->last_heartbeat);
-
-	part_sn2->remote_vars_part_pa = remote_vars->vars_part_pa;
-	dev_dbg(xpc_part, "  remote_vars_part_pa = 0x%016lx\n",
-		part_sn2->remote_vars_part_pa);
-
-	part_sn2->activate_IRQ_nasid = remote_vars->activate_IRQ_nasid;
-	dev_dbg(xpc_part, "  activate_IRQ_nasid = 0x%x\n",
-		part_sn2->activate_IRQ_nasid);
-
-	part_sn2->activate_IRQ_phys_cpuid =
-	    remote_vars->activate_IRQ_phys_cpuid;
-	dev_dbg(xpc_part, "  activate_IRQ_phys_cpuid = 0x%x\n",
-		part_sn2->activate_IRQ_phys_cpuid);
-
-	part_sn2->remote_amos_page_pa = remote_vars->amos_page_pa;
-	dev_dbg(xpc_part, "  remote_amos_page_pa = 0x%lx\n",
-		part_sn2->remote_amos_page_pa);
-
-	part_sn2->remote_vars_version = remote_vars->version;
-	dev_dbg(xpc_part, "  remote_vars_version = 0x%x\n",
-		part_sn2->remote_vars_version);
-}
-
-/*
- * Prior code has determined the nasid which generated a activate IRQ.
- * Inspect that nasid to determine if its partition needs to be activated
- * or deactivated.
- *
- * A partition is considered "awaiting activation" if our partition
- * flags indicate it is not active and it has a heartbeat.  A
- * partition is considered "awaiting deactivation" if our partition
- * flags indicate it is active but it has no heartbeat or it is not
- * sending its heartbeat to us.
- *
- * To determine the heartbeat, the remote nasid must have a properly
- * initialized reserved page.
- */
-static void
-xpc_identify_activate_IRQ_req_sn2(int nasid)
-{
-	struct xpc_rsvd_page *remote_rp;
-	struct xpc_vars_sn2 *remote_vars;
-	unsigned long remote_rp_pa;
-	unsigned long remote_vars_pa;
-	int remote_rp_version;
-	int reactivate = 0;
-	unsigned long remote_rp_ts_jiffies = 0;
-	short partid;
-	struct xpc_partition *part;
-	struct xpc_partition_sn2 *part_sn2;
-	enum xp_retval ret;
-
-	/* pull over the reserved page structure */
-
-	remote_rp = (struct xpc_rsvd_page *)xpc_remote_copy_buffer_sn2;
-
-	ret = xpc_get_remote_rp(nasid, NULL, remote_rp, &remote_rp_pa);
-	if (ret != xpSuccess) {
-		dev_warn(xpc_part, "unable to get reserved page from nasid %d, "
-			 "which sent interrupt, reason=%d\n", nasid, ret);
-		return;
-	}
-
-	remote_vars_pa = remote_rp->sn.sn2.vars_pa;
-	remote_rp_version = remote_rp->version;
-	remote_rp_ts_jiffies = remote_rp->ts_jiffies;
-
-	partid = remote_rp->SAL_partid;
-	part = &xpc_partitions[partid];
-	part_sn2 = &part->sn.sn2;
-
-	/* pull over the cross partition variables */
-
-	remote_vars = (struct xpc_vars_sn2 *)xpc_remote_copy_buffer_sn2;
-
-	ret = xpc_get_remote_vars_sn2(remote_vars_pa, remote_vars);
-	if (ret != xpSuccess) {
-		dev_warn(xpc_part, "unable to get XPC variables from nasid %d, "
-			 "which sent interrupt, reason=%d\n", nasid, ret);
-
-		XPC_DEACTIVATE_PARTITION(part, ret);
-		return;
-	}
-
-	part->activate_IRQ_rcvd++;
-
-	dev_dbg(xpc_part, "partid for nasid %d is %d; IRQs = %d; HB = "
-		"%lld:0x%lx\n", (int)nasid, (int)partid,
-		part->activate_IRQ_rcvd,
-		remote_vars->heartbeat, remote_vars->heartbeating_to_mask[0]);
-
-	if (xpc_partition_disengaged(part) &&
-	    part->act_state == XPC_P_AS_INACTIVE) {
-
-		xpc_update_partition_info_sn2(part, remote_rp_version,
-					      &remote_rp_ts_jiffies,
-					      remote_rp_pa, remote_vars_pa,
-					      remote_vars);
-
-		if (xpc_partition_deactivation_requested_sn2(partid)) {
-			/*
-			 * Other side is waiting on us to deactivate even though
-			 * we already have.
-			 */
-			return;
-		}
-
-		xpc_activate_partition(part);
-		return;
-	}
-
-	DBUG_ON(part->remote_rp_version == 0);
-	DBUG_ON(part_sn2->remote_vars_version == 0);
-
-	if (remote_rp_ts_jiffies != part->remote_rp_ts_jiffies) {
-
-		/* the other side rebooted */
-
-		DBUG_ON(xpc_partition_engaged_sn2(partid));
-		DBUG_ON(xpc_partition_deactivation_requested_sn2(partid));
-
-		xpc_update_partition_info_sn2(part, remote_rp_version,
-					      &remote_rp_ts_jiffies,
-					      remote_rp_pa, remote_vars_pa,
-					      remote_vars);
-		reactivate = 1;
-	}
-
-	if (part->disengage_timeout > 0 && !xpc_partition_disengaged(part)) {
-		/* still waiting on other side to disengage from us */
-		return;
-	}
-
-	if (reactivate)
-		XPC_DEACTIVATE_PARTITION(part, xpReactivating);
-	else if (xpc_partition_deactivation_requested_sn2(partid))
-		XPC_DEACTIVATE_PARTITION(part, xpOtherGoingDown);
-}
-
-/*
- * Loop through the activation amo variables and process any bits
- * which are set.  Each bit indicates a nasid sending a partition
- * activation or deactivation request.
- *
- * Return #of IRQs detected.
- */
-int
-xpc_identify_activate_IRQ_sender_sn2(void)
-{
-	int l;
-	int b;
-	unsigned long nasid_mask_long;
-	u64 nasid;		/* remote nasid */
-	int n_IRQs_detected = 0;
-	struct amo *act_amos;
-
-	act_amos = xpc_vars_sn2->amos_page + XPC_ACTIVATE_IRQ_AMOS_SN2;
-
-	/* scan through activate amo variables looking for non-zero entries */
-	for (l = 0; l < xpc_nasid_mask_nlongs; l++) {
-
-		if (xpc_exiting)
-			break;
-
-		nasid_mask_long = xpc_receive_IRQ_amo_sn2(&act_amos[l]);
-
-		b = find_first_bit(&nasid_mask_long, BITS_PER_LONG);
-		if (b >= BITS_PER_LONG) {
-			/* no IRQs from nasids in this amo variable */
-			continue;
-		}
-
-		dev_dbg(xpc_part, "amo[%d] gave back 0x%lx\n", l,
-			nasid_mask_long);
-
-		/*
-		 * If this nasid has been added to the machine since
-		 * our partition was reset, this will retain the
-		 * remote nasid in our reserved pages machine mask.
-		 * This is used in the event of module reload.
-		 */
-		xpc_mach_nasids[l] |= nasid_mask_long;
-
-		/* locate the nasid(s) which sent interrupts */
-
-		do {
-			n_IRQs_detected++;
-			nasid = (l * BITS_PER_LONG + b) * 2;
-			dev_dbg(xpc_part, "interrupt from nasid %lld\n", nasid);
-			xpc_identify_activate_IRQ_req_sn2(nasid);
-
-			b = find_next_bit(&nasid_mask_long, BITS_PER_LONG,
-					  b + 1);
-		} while (b < BITS_PER_LONG);
-	}
-	return n_IRQs_detected;
-}
-
-static void
-xpc_process_activate_IRQ_rcvd_sn2(void)
-{
-	unsigned long irq_flags;
-	int n_IRQs_expected;
-	int n_IRQs_detected;
-
-	spin_lock_irqsave(&xpc_activate_IRQ_rcvd_lock, irq_flags);
-	n_IRQs_expected = xpc_activate_IRQ_rcvd;
-	xpc_activate_IRQ_rcvd = 0;
-	spin_unlock_irqrestore(&xpc_activate_IRQ_rcvd_lock, irq_flags);
-
-	n_IRQs_detected = xpc_identify_activate_IRQ_sender_sn2();
-	if (n_IRQs_detected < n_IRQs_expected) {
-		/* retry once to help avoid missing amo */
-		(void)xpc_identify_activate_IRQ_sender_sn2();
-	}
-}
-
-/*
- * Setup the channel structures that are sn2 specific.
- */
-static enum xp_retval
-xpc_setup_ch_structures_sn2(struct xpc_partition *part)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	struct xpc_channel_sn2 *ch_sn2;
-	enum xp_retval retval;
-	int ret;
-	int cpuid;
-	int ch_number;
-	struct timer_list *timer;
-	short partid = XPC_PARTID(part);
-
-	/* allocate all the required GET/PUT values */
-
-	part_sn2->local_GPs =
-	    xpc_kzalloc_cacheline_aligned(XPC_GP_SIZE, GFP_KERNEL,
-					  &part_sn2->local_GPs_base);
-	if (part_sn2->local_GPs == NULL) {
-		dev_err(xpc_chan, "can't get memory for local get/put "
-			"values\n");
-		return xpNoMemory;
-	}
-
-	part_sn2->remote_GPs =
-	    xpc_kzalloc_cacheline_aligned(XPC_GP_SIZE, GFP_KERNEL,
-					  &part_sn2->remote_GPs_base);
-	if (part_sn2->remote_GPs == NULL) {
-		dev_err(xpc_chan, "can't get memory for remote get/put "
-			"values\n");
-		retval = xpNoMemory;
-		goto out_1;
-	}
-
-	part_sn2->remote_GPs_pa = 0;
-
-	/* allocate all the required open and close args */
-
-	part_sn2->local_openclose_args =
-	    xpc_kzalloc_cacheline_aligned(XPC_OPENCLOSE_ARGS_SIZE,
-					  GFP_KERNEL, &part_sn2->
-					  local_openclose_args_base);
-	if (part_sn2->local_openclose_args == NULL) {
-		dev_err(xpc_chan, "can't get memory for local connect args\n");
-		retval = xpNoMemory;
-		goto out_2;
-	}
-
-	part_sn2->remote_openclose_args_pa = 0;
-
-	part_sn2->local_chctl_amo_va = xpc_init_IRQ_amo_sn2(partid);
-
-	part_sn2->notify_IRQ_nasid = 0;
-	part_sn2->notify_IRQ_phys_cpuid = 0;
-	part_sn2->remote_chctl_amo_va = NULL;
-
-	sprintf(part_sn2->notify_IRQ_owner, "xpc%02d", partid);
-	ret = request_irq(SGI_XPC_NOTIFY, xpc_handle_notify_IRQ_sn2,
-			  IRQF_SHARED, part_sn2->notify_IRQ_owner,
-			  (void *)(u64)partid);
-	if (ret != 0) {
-		dev_err(xpc_chan, "can't register NOTIFY IRQ handler, "
-			"errno=%d\n", -ret);
-		retval = xpLackOfResources;
-		goto out_3;
-	}
-
-	/* Setup a timer to check for dropped notify IRQs */
-	timer = &part_sn2->dropped_notify_IRQ_timer;
-	timer_setup(timer, xpc_check_for_dropped_notify_IRQ_sn2, 0);
-	timer->expires = jiffies + XPC_DROPPED_NOTIFY_IRQ_WAIT_INTERVAL;
-	add_timer(timer);
-
-	for (ch_number = 0; ch_number < part->nchannels; ch_number++) {
-		ch_sn2 = &part->channels[ch_number].sn.sn2;
-
-		ch_sn2->local_GP = &part_sn2->local_GPs[ch_number];
-		ch_sn2->local_openclose_args =
-		    &part_sn2->local_openclose_args[ch_number];
-
-		mutex_init(&ch_sn2->msg_to_pull_mutex);
-	}
-
-	/*
-	 * Setup the per partition specific variables required by the
-	 * remote partition to establish channel connections with us.
-	 *
-	 * The setting of the magic # indicates that these per partition
-	 * specific variables are ready to be used.
-	 */
-	xpc_vars_part_sn2[partid].GPs_pa = xp_pa(part_sn2->local_GPs);
-	xpc_vars_part_sn2[partid].openclose_args_pa =
-	    xp_pa(part_sn2->local_openclose_args);
-	xpc_vars_part_sn2[partid].chctl_amo_pa =
-	    xp_pa(part_sn2->local_chctl_amo_va);
-	cpuid = raw_smp_processor_id();	/* any CPU in this partition will do */
-	xpc_vars_part_sn2[partid].notify_IRQ_nasid = cpuid_to_nasid(cpuid);
-	xpc_vars_part_sn2[partid].notify_IRQ_phys_cpuid =
-	    cpu_physical_id(cpuid);
-	xpc_vars_part_sn2[partid].nchannels = part->nchannels;
-	xpc_vars_part_sn2[partid].magic = XPC_VP_MAGIC1_SN2;
-
-	return xpSuccess;
-
-	/* setup of ch structures failed */
-out_3:
-	kfree(part_sn2->local_openclose_args_base);
-	part_sn2->local_openclose_args = NULL;
-out_2:
-	kfree(part_sn2->remote_GPs_base);
-	part_sn2->remote_GPs = NULL;
-out_1:
-	kfree(part_sn2->local_GPs_base);
-	part_sn2->local_GPs = NULL;
-	return retval;
-}
-
-/*
- * Teardown the channel structures that are sn2 specific.
- */
-static void
-xpc_teardown_ch_structures_sn2(struct xpc_partition *part)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	short partid = XPC_PARTID(part);
-
-	/*
-	 * Indicate that the variables specific to the remote partition are no
-	 * longer available for its use.
-	 */
-	xpc_vars_part_sn2[partid].magic = 0;
-
-	/* in case we've still got outstanding timers registered... */
-	del_timer_sync(&part_sn2->dropped_notify_IRQ_timer);
-	free_irq(SGI_XPC_NOTIFY, (void *)(u64)partid);
-
-	kfree(part_sn2->local_openclose_args_base);
-	part_sn2->local_openclose_args = NULL;
-	kfree(part_sn2->remote_GPs_base);
-	part_sn2->remote_GPs = NULL;
-	kfree(part_sn2->local_GPs_base);
-	part_sn2->local_GPs = NULL;
-	part_sn2->local_chctl_amo_va = NULL;
-}
-
-/*
- * Create a wrapper that hides the underlying mechanism for pulling a cacheline
- * (or multiple cachelines) from a remote partition.
- *
- * src_pa must be a cacheline aligned physical address on the remote partition.
- * dst must be a cacheline aligned virtual address on this partition.
- * cnt must be cacheline sized
- */
-/* ??? Replace this function by call to xp_remote_memcpy() or bte_copy()? */
-static enum xp_retval
-xpc_pull_remote_cachelines_sn2(struct xpc_partition *part, void *dst,
-			       const unsigned long src_pa, size_t cnt)
-{
-	enum xp_retval ret;
-
-	DBUG_ON(src_pa != L1_CACHE_ALIGN(src_pa));
-	DBUG_ON((unsigned long)dst != L1_CACHE_ALIGN((unsigned long)dst));
-	DBUG_ON(cnt != L1_CACHE_ALIGN(cnt));
-
-	if (part->act_state == XPC_P_AS_DEACTIVATING)
-		return part->reason;
-
-	ret = xp_remote_memcpy(xp_pa(dst), src_pa, cnt);
-	if (ret != xpSuccess) {
-		dev_dbg(xpc_chan, "xp_remote_memcpy() from partition %d failed,"
-			" ret=%d\n", XPC_PARTID(part), ret);
-	}
-	return ret;
-}
-
-/*
- * Pull the remote per partition specific variables from the specified
- * partition.
- */
-static enum xp_retval
-xpc_pull_remote_vars_part_sn2(struct xpc_partition *part)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	u8 buffer[L1_CACHE_BYTES * 2];
-	struct xpc_vars_part_sn2 *pulled_entry_cacheline =
-	    (struct xpc_vars_part_sn2 *)L1_CACHE_ALIGN((u64)buffer);
-	struct xpc_vars_part_sn2 *pulled_entry;
-	unsigned long remote_entry_cacheline_pa;
-	unsigned long remote_entry_pa;
-	short partid = XPC_PARTID(part);
-	enum xp_retval ret;
-
-	/* pull the cacheline that contains the variables we're interested in */
-
-	DBUG_ON(part_sn2->remote_vars_part_pa !=
-		L1_CACHE_ALIGN(part_sn2->remote_vars_part_pa));
-	DBUG_ON(sizeof(struct xpc_vars_part_sn2) != L1_CACHE_BYTES / 2);
-
-	remote_entry_pa = part_sn2->remote_vars_part_pa +
-	    sn_partition_id * sizeof(struct xpc_vars_part_sn2);
-
-	remote_entry_cacheline_pa = (remote_entry_pa & ~(L1_CACHE_BYTES - 1));
-
-	pulled_entry = (struct xpc_vars_part_sn2 *)((u64)pulled_entry_cacheline
-						    + (remote_entry_pa &
-						    (L1_CACHE_BYTES - 1)));
-
-	ret = xpc_pull_remote_cachelines_sn2(part, pulled_entry_cacheline,
-					     remote_entry_cacheline_pa,
-					     L1_CACHE_BYTES);
-	if (ret != xpSuccess) {
-		dev_dbg(xpc_chan, "failed to pull XPC vars_part from "
-			"partition %d, ret=%d\n", partid, ret);
-		return ret;
-	}
-
-	/* see if they've been set up yet */
-
-	if (pulled_entry->magic != XPC_VP_MAGIC1_SN2 &&
-	    pulled_entry->magic != XPC_VP_MAGIC2_SN2) {
-
-		if (pulled_entry->magic != 0) {
-			dev_dbg(xpc_chan, "partition %d's XPC vars_part for "
-				"partition %d has bad magic value (=0x%llx)\n",
-				partid, sn_partition_id, pulled_entry->magic);
-			return xpBadMagic;
-		}
-
-		/* they've not been initialized yet */
-		return xpRetry;
-	}
-
-	if (xpc_vars_part_sn2[partid].magic == XPC_VP_MAGIC1_SN2) {
-
-		/* validate the variables */
-
-		if (pulled_entry->GPs_pa == 0 ||
-		    pulled_entry->openclose_args_pa == 0 ||
-		    pulled_entry->chctl_amo_pa == 0) {
-
-			dev_err(xpc_chan, "partition %d's XPC vars_part for "
-				"partition %d are not valid\n", partid,
-				sn_partition_id);
-			return xpInvalidAddress;
-		}
-
-		/* the variables we imported look to be valid */
-
-		part_sn2->remote_GPs_pa = pulled_entry->GPs_pa;
-		part_sn2->remote_openclose_args_pa =
-		    pulled_entry->openclose_args_pa;
-		part_sn2->remote_chctl_amo_va =
-		    (struct amo *)__va(pulled_entry->chctl_amo_pa);
-		part_sn2->notify_IRQ_nasid = pulled_entry->notify_IRQ_nasid;
-		part_sn2->notify_IRQ_phys_cpuid =
-		    pulled_entry->notify_IRQ_phys_cpuid;
-
-		if (part->nchannels > pulled_entry->nchannels)
-			part->nchannels = pulled_entry->nchannels;
-
-		/* let the other side know that we've pulled their variables */
-
-		xpc_vars_part_sn2[partid].magic = XPC_VP_MAGIC2_SN2;
-	}
-
-	if (pulled_entry->magic == XPC_VP_MAGIC1_SN2)
-		return xpRetry;
-
-	return xpSuccess;
-}
-
-/*
- * Establish first contact with the remote partititon. This involves pulling
- * the XPC per partition variables from the remote partition and waiting for
- * the remote partition to pull ours.
- */
-static enum xp_retval
-xpc_make_first_contact_sn2(struct xpc_partition *part)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	enum xp_retval ret;
-
-	/*
-	 * Register the remote partition's amos with SAL so it can handle
-	 * and cleanup errors within that address range should the remote
-	 * partition go down. We don't unregister this range because it is
-	 * difficult to tell when outstanding writes to the remote partition
-	 * are finished and thus when it is safe to unregister. This should
-	 * not result in wasted space in the SAL xp_addr_region table because
-	 * we should get the same page for remote_amos_page_pa after module
-	 * reloads and system reboots.
-	 */
-	if (sn_register_xp_addr_region(part_sn2->remote_amos_page_pa,
-				       PAGE_SIZE, 1) < 0) {
-		dev_warn(xpc_part, "xpc_activating(%d) failed to register "
-			 "xp_addr region\n", XPC_PARTID(part));
-
-		ret = xpPhysAddrRegFailed;
-		XPC_DEACTIVATE_PARTITION(part, ret);
-		return ret;
-	}
-
-	/*
-	 * Send activate IRQ to get other side to activate if they've not
-	 * already begun to do so.
-	 */
-	xpc_send_activate_IRQ_sn2(part_sn2->remote_amos_page_pa,
-				  cnodeid_to_nasid(0),
-				  part_sn2->activate_IRQ_nasid,
-				  part_sn2->activate_IRQ_phys_cpuid);
-
-	while ((ret = xpc_pull_remote_vars_part_sn2(part)) != xpSuccess) {
-		if (ret != xpRetry) {
-			XPC_DEACTIVATE_PARTITION(part, ret);
-			return ret;
-		}
-
-		dev_dbg(xpc_part, "waiting to make first contact with "
-			"partition %d\n", XPC_PARTID(part));
-
-		/* wait a 1/4 of a second or so */
-		(void)msleep_interruptible(250);
-
-		if (part->act_state == XPC_P_AS_DEACTIVATING)
-			return part->reason;
-	}
-
-	return xpSuccess;
-}
-
-/*
- * Get the chctl flags and pull the openclose args and/or remote GPs as needed.
- */
-static u64
-xpc_get_chctl_all_flags_sn2(struct xpc_partition *part)
-{
-	struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
-	unsigned long irq_flags;
-	union xpc_channel_ctl_flags chctl;
-	enum xp_retval ret;
-
-	/*
-	 * See if there are any chctl flags to be handled.
-	 */
-
-	spin_lock_irqsave(&part->chctl_lock, irq_flags);
-	chctl = part->chctl;
-	if (chctl.all_flags != 0)
-		part->chctl.all_flags = 0;
-
-	spin_unlock_irqrestore(&part->chctl_lock, irq_flags);
-
-	if (xpc_any_openclose_chctl_flags_set(&chctl)) {
-		ret = xpc_pull_remote_cachelines_sn2(part, part->
-						     remote_openclose_args,
-						     part_sn2->
-						     remote_openclose_args_pa,
-						     XPC_OPENCLOSE_ARGS_SIZE);
-		if (ret != xpSuccess) {
-			XPC_DEACTIVATE_PARTITION(part, ret);
-
-			dev_dbg(xpc_chan, "failed to pull openclose args from "
-				"partition %d, ret=%d\n", XPC_PARTID(part),
-				ret);
-
-			/* don't bother processing chctl flags anymore */
-			chctl.all_flags = 0;
-		}
-	}
-
-	if (xpc_any_msg_chctl_flags_set(&chctl)) {
-		ret = xpc_pull_remote_cachelines_sn2(part, part_sn2->remote_GPs,
-						     part_sn2->remote_GPs_pa,
-						     XPC_GP_SIZE);
-		if (ret != xpSuccess) {
-			XPC_DEACTIVATE_PARTITION(part, ret);
-
-			dev_dbg(xpc_chan, "failed to pull GPs from partition "
-				"%d, ret=%d\n", XPC_PARTID(part), ret);
-
-			/* don't bother processing chctl flags anymore */
-			chctl.all_flags = 0;
-		}
-	}
-
-	return chctl.all_flags;
-}
-
-/*
- * Allocate the local message queue and the notify queue.
- */
-static enum xp_retval
-xpc_allocate_local_msgqueue_sn2(struct xpc_channel *ch)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	unsigned long irq_flags;
-	int nentries;
-	size_t nbytes;
-
-	for (nentries = ch->local_nentries; nentries > 0; nentries--) {
-
-		nbytes = nentries * ch->entry_size;
-		ch_sn2->local_msgqueue =
-		    xpc_kzalloc_cacheline_aligned(nbytes, GFP_KERNEL,
-						  &ch_sn2->local_msgqueue_base);
-		if (ch_sn2->local_msgqueue == NULL)
-			continue;
-
-		nbytes = nentries * sizeof(struct xpc_notify_sn2);
-		ch_sn2->notify_queue = kzalloc(nbytes, GFP_KERNEL);
-		if (ch_sn2->notify_queue == NULL) {
-			kfree(ch_sn2->local_msgqueue_base);
-			ch_sn2->local_msgqueue = NULL;
-			continue;
-		}
-
-		spin_lock_irqsave(&ch->lock, irq_flags);
-		if (nentries < ch->local_nentries) {
-			dev_dbg(xpc_chan, "nentries=%d local_nentries=%d, "
-				"partid=%d, channel=%d\n", nentries,
-				ch->local_nentries, ch->partid, ch->number);
-
-			ch->local_nentries = nentries;
-		}
-		spin_unlock_irqrestore(&ch->lock, irq_flags);
-		return xpSuccess;
-	}
-
-	dev_dbg(xpc_chan, "can't get memory for local message queue and notify "
-		"queue, partid=%d, channel=%d\n", ch->partid, ch->number);
-	return xpNoMemory;
-}
-
-/*
- * Allocate the cached remote message queue.
- */
-static enum xp_retval
-xpc_allocate_remote_msgqueue_sn2(struct xpc_channel *ch)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	unsigned long irq_flags;
-	int nentries;
-	size_t nbytes;
-
-	DBUG_ON(ch->remote_nentries <= 0);
-
-	for (nentries = ch->remote_nentries; nentries > 0; nentries--) {
-
-		nbytes = nentries * ch->entry_size;
-		ch_sn2->remote_msgqueue =
-		    xpc_kzalloc_cacheline_aligned(nbytes, GFP_KERNEL, &ch_sn2->
-						  remote_msgqueue_base);
-		if (ch_sn2->remote_msgqueue == NULL)
-			continue;
-
-		spin_lock_irqsave(&ch->lock, irq_flags);
-		if (nentries < ch->remote_nentries) {
-			dev_dbg(xpc_chan, "nentries=%d remote_nentries=%d, "
-				"partid=%d, channel=%d\n", nentries,
-				ch->remote_nentries, ch->partid, ch->number);
-
-			ch->remote_nentries = nentries;
-		}
-		spin_unlock_irqrestore(&ch->lock, irq_flags);
-		return xpSuccess;
-	}
-
-	dev_dbg(xpc_chan, "can't get memory for cached remote message queue, "
-		"partid=%d, channel=%d\n", ch->partid, ch->number);
-	return xpNoMemory;
-}
-
-/*
- * Allocate message queues and other stuff associated with a channel.
- *
- * Note: Assumes all of the channel sizes are filled in.
- */
-static enum xp_retval
-xpc_setup_msg_structures_sn2(struct xpc_channel *ch)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	enum xp_retval ret;
-
-	DBUG_ON(ch->flags & XPC_C_SETUP);
-
-	ret = xpc_allocate_local_msgqueue_sn2(ch);
-	if (ret == xpSuccess) {
-
-		ret = xpc_allocate_remote_msgqueue_sn2(ch);
-		if (ret != xpSuccess) {
-			kfree(ch_sn2->local_msgqueue_base);
-			ch_sn2->local_msgqueue = NULL;
-			kfree(ch_sn2->notify_queue);
-			ch_sn2->notify_queue = NULL;
-		}
-	}
-	return ret;
-}
-
-/*
- * Free up message queues and other stuff that were allocated for the specified
- * channel.
- */
-static void
-xpc_teardown_msg_structures_sn2(struct xpc_channel *ch)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-
-	lockdep_assert_held(&ch->lock);
-
-	ch_sn2->remote_msgqueue_pa = 0;
-
-	ch_sn2->local_GP->get = 0;
-	ch_sn2->local_GP->put = 0;
-	ch_sn2->remote_GP.get = 0;
-	ch_sn2->remote_GP.put = 0;
-	ch_sn2->w_local_GP.get = 0;
-	ch_sn2->w_local_GP.put = 0;
-	ch_sn2->w_remote_GP.get = 0;
-	ch_sn2->w_remote_GP.put = 0;
-	ch_sn2->next_msg_to_pull = 0;
-
-	if (ch->flags & XPC_C_SETUP) {
-		dev_dbg(xpc_chan, "ch->flags=0x%x, partid=%d, channel=%d\n",
-			ch->flags, ch->partid, ch->number);
-
-		kfree(ch_sn2->local_msgqueue_base);
-		ch_sn2->local_msgqueue = NULL;
-		kfree(ch_sn2->remote_msgqueue_base);
-		ch_sn2->remote_msgqueue = NULL;
-		kfree(ch_sn2->notify_queue);
-		ch_sn2->notify_queue = NULL;
-	}
-}
-
-/*
- * Notify those who wanted to be notified upon delivery of their message.
- */
-static void
-xpc_notify_senders_sn2(struct xpc_channel *ch, enum xp_retval reason, s64 put)
-{
-	struct xpc_notify_sn2 *notify;
-	u8 notify_type;
-	s64 get = ch->sn.sn2.w_remote_GP.get - 1;
-
-	while (++get < put && atomic_read(&ch->n_to_notify) > 0) {
-
-		notify = &ch->sn.sn2.notify_queue[get % ch->local_nentries];
-
-		/*
-		 * See if the notify entry indicates it was associated with
-		 * a message who's sender wants to be notified. It is possible
-		 * that it is, but someone else is doing or has done the
-		 * notification.
-		 */
-		notify_type = notify->type;
-		if (notify_type == 0 ||
-		    cmpxchg(&notify->type, notify_type, 0) != notify_type) {
-			continue;
-		}
-
-		DBUG_ON(notify_type != XPC_N_CALL);
-
-		atomic_dec(&ch->n_to_notify);
-
-		if (notify->func != NULL) {
-			dev_dbg(xpc_chan, "notify->func() called, notify=0x%p "
-				"msg_number=%lld partid=%d channel=%d\n",
-				(void *)notify, get, ch->partid, ch->number);
-
-			notify->func(reason, ch->partid, ch->number,
-				     notify->key);
-
-			dev_dbg(xpc_chan, "notify->func() returned, notify=0x%p"
-				" msg_number=%lld partid=%d channel=%d\n",
-				(void *)notify, get, ch->partid, ch->number);
-		}
-	}
-}
-
-static void
-xpc_notify_senders_of_disconnect_sn2(struct xpc_channel *ch)
-{
-	xpc_notify_senders_sn2(ch, ch->reason, ch->sn.sn2.w_local_GP.put);
-}
-
-/*
- * Clear some of the msg flags in the local message queue.
- */
-static inline void
-xpc_clear_local_msgqueue_flags_sn2(struct xpc_channel *ch)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	struct xpc_msg_sn2 *msg;
-	s64 get;
-
-	get = ch_sn2->w_remote_GP.get;
-	do {
-		msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->local_msgqueue +
-					     (get % ch->local_nentries) *
-					     ch->entry_size);
-		DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
-		msg->flags = 0;
-	} while (++get < ch_sn2->remote_GP.get);
-}
-
-/*
- * Clear some of the msg flags in the remote message queue.
- */
-static inline void
-xpc_clear_remote_msgqueue_flags_sn2(struct xpc_channel *ch)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	struct xpc_msg_sn2 *msg;
-	s64 put, remote_nentries = ch->remote_nentries;
-
-	/* flags are zeroed when the buffer is allocated */
-	if (ch_sn2->remote_GP.put < remote_nentries)
-		return;
-
-	put = max(ch_sn2->w_remote_GP.put, remote_nentries);
-	do {
-		msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->remote_msgqueue +
-					     (put % remote_nentries) *
-					     ch->entry_size);
-		DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
-		DBUG_ON(!(msg->flags & XPC_M_SN2_DONE));
-		DBUG_ON(msg->number != put - remote_nentries);
-		msg->flags = 0;
-	} while (++put < ch_sn2->remote_GP.put);
-}
-
-static int
-xpc_n_of_deliverable_payloads_sn2(struct xpc_channel *ch)
-{
-	return ch->sn.sn2.w_remote_GP.put - ch->sn.sn2.w_local_GP.get;
-}
-
-static void
-xpc_process_msg_chctl_flags_sn2(struct xpc_partition *part, int ch_number)
-{
-	struct xpc_channel *ch = &part->channels[ch_number];
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	int npayloads_sent;
-
-	ch_sn2->remote_GP = part->sn.sn2.remote_GPs[ch_number];
-
-	/* See what, if anything, has changed for each connected channel */
-
-	xpc_msgqueue_ref(ch);
-
-	if (ch_sn2->w_remote_GP.get == ch_sn2->remote_GP.get &&
-	    ch_sn2->w_remote_GP.put == ch_sn2->remote_GP.put) {
-		/* nothing changed since GPs were last pulled */
-		xpc_msgqueue_deref(ch);
-		return;
-	}
-
-	if (!(ch->flags & XPC_C_CONNECTED)) {
-		xpc_msgqueue_deref(ch);
-		return;
-	}
-
-	/*
-	 * First check to see if messages recently sent by us have been
-	 * received by the other side. (The remote GET value will have
-	 * changed since we last looked at it.)
-	 */
-
-	if (ch_sn2->w_remote_GP.get != ch_sn2->remote_GP.get) {
-
-		/*
-		 * We need to notify any senders that want to be notified
-		 * that their sent messages have been received by their
-		 * intended recipients. We need to do this before updating
-		 * w_remote_GP.get so that we don't allocate the same message
-		 * queue entries prematurely (see xpc_allocate_msg()).
-		 */
-		if (atomic_read(&ch->n_to_notify) > 0) {
-			/*
-			 * Notify senders that messages sent have been
-			 * received and delivered by the other side.
-			 */
-			xpc_notify_senders_sn2(ch, xpMsgDelivered,
-					       ch_sn2->remote_GP.get);
-		}
-
-		/*
-		 * Clear msg->flags in previously sent messages, so that
-		 * they're ready for xpc_allocate_msg().
-		 */
-		xpc_clear_local_msgqueue_flags_sn2(ch);
-
-		ch_sn2->w_remote_GP.get = ch_sn2->remote_GP.get;
-
-		dev_dbg(xpc_chan, "w_remote_GP.get changed to %lld, partid=%d, "
-			"channel=%d\n", ch_sn2->w_remote_GP.get, ch->partid,
-			ch->number);
-
-		/*
-		 * If anyone was waiting for message queue entries to become
-		 * available, wake them up.
-		 */
-		if (atomic_read(&ch->n_on_msg_allocate_wq) > 0)
-			wake_up(&ch->msg_allocate_wq);
-	}
-
-	/*
-	 * Now check for newly sent messages by the other side. (The remote
-	 * PUT value will have changed since we last looked at it.)
-	 */
-
-	if (ch_sn2->w_remote_GP.put != ch_sn2->remote_GP.put) {
-		/*
-		 * Clear msg->flags in previously received messages, so that
-		 * they're ready for xpc_get_deliverable_payload_sn2().
-		 */
-		xpc_clear_remote_msgqueue_flags_sn2(ch);
-
-		smp_wmb(); /* ensure flags have been cleared before bte_copy */
-		ch_sn2->w_remote_GP.put = ch_sn2->remote_GP.put;
-
-		dev_dbg(xpc_chan, "w_remote_GP.put changed to %lld, partid=%d, "
-			"channel=%d\n", ch_sn2->w_remote_GP.put, ch->partid,
-			ch->number);
-
-		npayloads_sent = xpc_n_of_deliverable_payloads_sn2(ch);
-		if (npayloads_sent > 0) {
-			dev_dbg(xpc_chan, "msgs waiting to be copied and "
-				"delivered=%d, partid=%d, channel=%d\n",
-				npayloads_sent, ch->partid, ch->number);
-
-			if (ch->flags & XPC_C_CONNECTEDCALLOUT_MADE)
-				xpc_activate_kthreads(ch, npayloads_sent);
-		}
-	}
-
-	xpc_msgqueue_deref(ch);
-}
-
-static struct xpc_msg_sn2 *
-xpc_pull_remote_msg_sn2(struct xpc_channel *ch, s64 get)
-{
-	struct xpc_partition *part = &xpc_partitions[ch->partid];
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	unsigned long remote_msg_pa;
-	struct xpc_msg_sn2 *msg;
-	u32 msg_index;
-	u32 nmsgs;
-	u64 msg_offset;
-	enum xp_retval ret;
-
-	if (mutex_lock_interruptible(&ch_sn2->msg_to_pull_mutex) != 0) {
-		/* we were interrupted by a signal */
-		return NULL;
-	}
-
-	while (get >= ch_sn2->next_msg_to_pull) {
-
-		/* pull as many messages as are ready and able to be pulled */
-
-		msg_index = ch_sn2->next_msg_to_pull % ch->remote_nentries;
-
-		DBUG_ON(ch_sn2->next_msg_to_pull >= ch_sn2->w_remote_GP.put);
-		nmsgs = ch_sn2->w_remote_GP.put - ch_sn2->next_msg_to_pull;
-		if (msg_index + nmsgs > ch->remote_nentries) {
-			/* ignore the ones that wrap the msg queue for now */
-			nmsgs = ch->remote_nentries - msg_index;
-		}
-
-		msg_offset = msg_index * ch->entry_size;
-		msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->remote_msgqueue +
-		    msg_offset);
-		remote_msg_pa = ch_sn2->remote_msgqueue_pa + msg_offset;
-
-		ret = xpc_pull_remote_cachelines_sn2(part, msg, remote_msg_pa,
-						     nmsgs * ch->entry_size);
-		if (ret != xpSuccess) {
-
-			dev_dbg(xpc_chan, "failed to pull %d msgs starting with"
-				" msg %lld from partition %d, channel=%d, "
-				"ret=%d\n", nmsgs, ch_sn2->next_msg_to_pull,
-				ch->partid, ch->number, ret);
-
-			XPC_DEACTIVATE_PARTITION(part, ret);
-
-			mutex_unlock(&ch_sn2->msg_to_pull_mutex);
-			return NULL;
-		}
-
-		ch_sn2->next_msg_to_pull += nmsgs;
-	}
-
-	mutex_unlock(&ch_sn2->msg_to_pull_mutex);
-
-	/* return the message we were looking for */
-	msg_offset = (get % ch->remote_nentries) * ch->entry_size;
-	msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->remote_msgqueue + msg_offset);
-
-	return msg;
-}
-
-/*
- * Get the next deliverable message's payload.
- */
-static void *
-xpc_get_deliverable_payload_sn2(struct xpc_channel *ch)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	struct xpc_msg_sn2 *msg;
-	void *payload = NULL;
-	s64 get;
-
-	do {
-		if (ch->flags & XPC_C_DISCONNECTING)
-			break;
-
-		get = ch_sn2->w_local_GP.get;
-		smp_rmb();	/* guarantee that .get loads before .put */
-		if (get == ch_sn2->w_remote_GP.put)
-			break;
-
-		/* There are messages waiting to be pulled and delivered.
-		 * We need to try to secure one for ourselves. We'll do this
-		 * by trying to increment w_local_GP.get and hope that no one
-		 * else beats us to it. If they do, we'll we'll simply have
-		 * to try again for the next one.
-		 */
-
-		if (cmpxchg(&ch_sn2->w_local_GP.get, get, get + 1) == get) {
-			/* we got the entry referenced by get */
-
-			dev_dbg(xpc_chan, "w_local_GP.get changed to %lld, "
-				"partid=%d, channel=%d\n", get + 1,
-				ch->partid, ch->number);
-
-			/* pull the message from the remote partition */
-
-			msg = xpc_pull_remote_msg_sn2(ch, get);
-
-			if (msg != NULL) {
-				DBUG_ON(msg->number != get);
-				DBUG_ON(msg->flags & XPC_M_SN2_DONE);
-				DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
-
-				payload = &msg->payload;
-			}
-			break;
-		}
-
-	} while (1);
-
-	return payload;
-}
-
-/*
- * Now we actually send the messages that are ready to be sent by advancing
- * the local message queue's Put value and then send a chctl msgrequest to the
- * recipient partition.
- */
-static void
-xpc_send_msgs_sn2(struct xpc_channel *ch, s64 initial_put)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	struct xpc_msg_sn2 *msg;
-	s64 put = initial_put + 1;
-	int send_msgrequest = 0;
-
-	while (1) {
-
-		while (1) {
-			if (put == ch_sn2->w_local_GP.put)
-				break;
-
-			msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->
-						     local_msgqueue + (put %
-						     ch->local_nentries) *
-						     ch->entry_size);
-
-			if (!(msg->flags & XPC_M_SN2_READY))
-				break;
-
-			put++;
-		}
-
-		if (put == initial_put) {
-			/* nothing's changed */
-			break;
-		}
-
-		if (cmpxchg_rel(&ch_sn2->local_GP->put, initial_put, put) !=
-		    initial_put) {
-			/* someone else beat us to it */
-			DBUG_ON(ch_sn2->local_GP->put < initial_put);
-			break;
-		}
-
-		/* we just set the new value of local_GP->put */
-
-		dev_dbg(xpc_chan, "local_GP->put changed to %lld, partid=%d, "
-			"channel=%d\n", put, ch->partid, ch->number);
-
-		send_msgrequest = 1;
-
-		/*
-		 * We need to ensure that the message referenced by
-		 * local_GP->put is not XPC_M_SN2_READY or that local_GP->put
-		 * equals w_local_GP.put, so we'll go have a look.
-		 */
-		initial_put = put;
-	}
-
-	if (send_msgrequest)
-		xpc_send_chctl_msgrequest_sn2(ch);
-}
-
-/*
- * Allocate an entry for a message from the message queue associated with the
- * specified channel.
- */
-static enum xp_retval
-xpc_allocate_msg_sn2(struct xpc_channel *ch, u32 flags,
-		     struct xpc_msg_sn2 **address_of_msg)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	struct xpc_msg_sn2 *msg;
-	enum xp_retval ret;
-	s64 put;
-
-	/*
-	 * Get the next available message entry from the local message queue.
-	 * If none are available, we'll make sure that we grab the latest
-	 * GP values.
-	 */
-	ret = xpTimeout;
-
-	while (1) {
-
-		put = ch_sn2->w_local_GP.put;
-		smp_rmb();	/* guarantee that .put loads before .get */
-		if (put - ch_sn2->w_remote_GP.get < ch->local_nentries) {
-
-			/* There are available message entries. We need to try
-			 * to secure one for ourselves. We'll do this by trying
-			 * to increment w_local_GP.put as long as someone else
-			 * doesn't beat us to it. If they do, we'll have to
-			 * try again.
-			 */
-			if (cmpxchg(&ch_sn2->w_local_GP.put, put, put + 1) ==
-			    put) {
-				/* we got the entry referenced by put */
-				break;
-			}
-			continue;	/* try again */
-		}
-
-		/*
-		 * There aren't any available msg entries at this time.
-		 *
-		 * In waiting for a message entry to become available,
-		 * we set a timeout in case the other side is not sending
-		 * completion interrupts. This lets us fake a notify IRQ
-		 * that will cause the notify IRQ handler to fetch the latest
-		 * GP values as if an interrupt was sent by the other side.
-		 */
-		if (ret == xpTimeout)
-			xpc_send_chctl_local_msgrequest_sn2(ch);
-
-		if (flags & XPC_NOWAIT)
-			return xpNoWait;
-
-		ret = xpc_allocate_msg_wait(ch);
-		if (ret != xpInterrupted && ret != xpTimeout)
-			return ret;
-	}
-
-	/* get the message's address and initialize it */
-	msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->local_msgqueue +
-				     (put % ch->local_nentries) *
-				     ch->entry_size);
-
-	DBUG_ON(msg->flags != 0);
-	msg->number = put;
-
-	dev_dbg(xpc_chan, "w_local_GP.put changed to %lld; msg=0x%p, "
-		"msg_number=%lld, partid=%d, channel=%d\n", put + 1,
-		(void *)msg, msg->number, ch->partid, ch->number);
-
-	*address_of_msg = msg;
-	return xpSuccess;
-}
-
-/*
- * Common code that does the actual sending of the message by advancing the
- * local message queue's Put value and sends a chctl msgrequest to the
- * partition the message is being sent to.
- */
-static enum xp_retval
-xpc_send_payload_sn2(struct xpc_channel *ch, u32 flags, void *payload,
-		     u16 payload_size, u8 notify_type, xpc_notify_func func,
-		     void *key)
-{
-	enum xp_retval ret = xpSuccess;
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	struct xpc_msg_sn2 *msg = msg;
-	struct xpc_notify_sn2 *notify = notify;
-	s64 msg_number;
-	s64 put;
-
-	DBUG_ON(notify_type == XPC_N_CALL && func == NULL);
-
-	if (XPC_MSG_SIZE(payload_size) > ch->entry_size)
-		return xpPayloadTooBig;
-
-	xpc_msgqueue_ref(ch);
-
-	if (ch->flags & XPC_C_DISCONNECTING) {
-		ret = ch->reason;
-		goto out_1;
-	}
-	if (!(ch->flags & XPC_C_CONNECTED)) {
-		ret = xpNotConnected;
-		goto out_1;
-	}
-
-	ret = xpc_allocate_msg_sn2(ch, flags, &msg);
-	if (ret != xpSuccess)
-		goto out_1;
-
-	msg_number = msg->number;
-
-	if (notify_type != 0) {
-		/*
-		 * Tell the remote side to send an ACK interrupt when the
-		 * message has been delivered.
-		 */
-		msg->flags |= XPC_M_SN2_INTERRUPT;
-
-		atomic_inc(&ch->n_to_notify);
-
-		notify = &ch_sn2->notify_queue[msg_number % ch->local_nentries];
-		notify->func = func;
-		notify->key = key;
-		notify->type = notify_type;
-
-		/* ??? Is a mb() needed here? */
-
-		if (ch->flags & XPC_C_DISCONNECTING) {
-			/*
-			 * An error occurred between our last error check and
-			 * this one. We will try to clear the type field from
-			 * the notify entry. If we succeed then
-			 * xpc_disconnect_channel() didn't already process
-			 * the notify entry.
-			 */
-			if (cmpxchg(&notify->type, notify_type, 0) ==
-			    notify_type) {
-				atomic_dec(&ch->n_to_notify);
-				ret = ch->reason;
-			}
-			goto out_1;
-		}
-	}
-
-	memcpy(&msg->payload, payload, payload_size);
-
-	msg->flags |= XPC_M_SN2_READY;
-
-	/*
-	 * The preceding store of msg->flags must occur before the following
-	 * load of local_GP->put.
-	 */
-	smp_mb();
-
-	/* see if the message is next in line to be sent, if so send it */
-
-	put = ch_sn2->local_GP->put;
-	if (put == msg_number)
-		xpc_send_msgs_sn2(ch, put);
-
-out_1:
-	xpc_msgqueue_deref(ch);
-	return ret;
-}
-
-/*
- * Now we actually acknowledge the messages that have been delivered and ack'd
- * by advancing the cached remote message queue's Get value and if requested
- * send a chctl msgrequest to the message sender's partition.
- *
- * If a message has XPC_M_SN2_INTERRUPT set, send an interrupt to the partition
- * that sent the message.
- */
-static void
-xpc_acknowledge_msgs_sn2(struct xpc_channel *ch, s64 initial_get, u8 msg_flags)
-{
-	struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
-	struct xpc_msg_sn2 *msg;
-	s64 get = initial_get + 1;
-	int send_msgrequest = 0;
-
-	while (1) {
-
-		while (1) {
-			if (get == ch_sn2->w_local_GP.get)
-				break;
-
-			msg = (struct xpc_msg_sn2 *)((u64)ch_sn2->
-						     remote_msgqueue + (get %
-						     ch->remote_nentries) *
-						     ch->entry_size);
-
-			if (!(msg->flags & XPC_M_SN2_DONE))
-				break;
-
-			msg_flags |= msg->flags;
-			get++;
-		}
-
-		if (get == initial_get) {
-			/* nothing's changed */
-			break;
-		}
-
-		if (cmpxchg_rel(&ch_sn2->local_GP->get, initial_get, get) !=
-		    initial_get) {
-			/* someone else beat us to it */
-			DBUG_ON(ch_sn2->local_GP->get <= initial_get);
-			break;
-		}
-
-		/* we just set the new value of local_GP->get */
-
-		dev_dbg(xpc_chan, "local_GP->get changed to %lld, partid=%d, "
-			"channel=%d\n", get, ch->partid, ch->number);
-
-		send_msgrequest = (msg_flags & XPC_M_SN2_INTERRUPT);
-
-		/*
-		 * We need to ensure that the message referenced by
-		 * local_GP->get is not XPC_M_SN2_DONE or that local_GP->get
-		 * equals w_local_GP.get, so we'll go have a look.
-		 */
-		initial_get = get;
-	}
-
-	if (send_msgrequest)
-		xpc_send_chctl_msgrequest_sn2(ch);
-}
-
-static void
-xpc_received_payload_sn2(struct xpc_channel *ch, void *payload)
-{
-	struct xpc_msg_sn2 *msg;
-	s64 msg_number;
-	s64 get;
-
-	msg = container_of(payload, struct xpc_msg_sn2, payload);
-	msg_number = msg->number;
-
-	dev_dbg(xpc_chan, "msg=0x%p, msg_number=%lld, partid=%d, channel=%d\n",
-		(void *)msg, msg_number, ch->partid, ch->number);
-
-	DBUG_ON((((u64)msg - (u64)ch->sn.sn2.remote_msgqueue) / ch->entry_size) !=
-		msg_number % ch->remote_nentries);
-	DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
-	DBUG_ON(msg->flags & XPC_M_SN2_DONE);
-
-	msg->flags |= XPC_M_SN2_DONE;
-
-	/*
-	 * The preceding store of msg->flags must occur before the following
-	 * load of local_GP->get.
-	 */
-	smp_mb();
-
-	/*
-	 * See if this message is next in line to be acknowledged as having
-	 * been delivered.
-	 */
-	get = ch->sn.sn2.local_GP->get;
-	if (get == msg_number)
-		xpc_acknowledge_msgs_sn2(ch, get, msg->flags);
-}
-
-static struct xpc_arch_operations xpc_arch_ops_sn2 = {
-	.setup_partitions = xpc_setup_partitions_sn2,
-	.teardown_partitions = xpc_teardown_partitions_sn2,
-	.process_activate_IRQ_rcvd = xpc_process_activate_IRQ_rcvd_sn2,
-	.get_partition_rsvd_page_pa = xpc_get_partition_rsvd_page_pa_sn2,
-	.setup_rsvd_page = xpc_setup_rsvd_page_sn2,
-
-	.allow_hb = xpc_allow_hb_sn2,
-	.disallow_hb = xpc_disallow_hb_sn2,
-	.disallow_all_hbs = xpc_disallow_all_hbs_sn2,
-	.increment_heartbeat = xpc_increment_heartbeat_sn2,
-	.offline_heartbeat = xpc_offline_heartbeat_sn2,
-	.online_heartbeat = xpc_online_heartbeat_sn2,
-	.heartbeat_init = xpc_heartbeat_init_sn2,
-	.heartbeat_exit = xpc_heartbeat_exit_sn2,
-	.get_remote_heartbeat = xpc_get_remote_heartbeat_sn2,
-
-	.request_partition_activation =
-		xpc_request_partition_activation_sn2,
-	.request_partition_reactivation =
-		xpc_request_partition_reactivation_sn2,
-	.request_partition_deactivation =
-		xpc_request_partition_deactivation_sn2,
-	.cancel_partition_deactivation_request =
-		xpc_cancel_partition_deactivation_request_sn2,
-
-	.setup_ch_structures = xpc_setup_ch_structures_sn2,
-	.teardown_ch_structures = xpc_teardown_ch_structures_sn2,
-
-	.make_first_contact = xpc_make_first_contact_sn2,
-
-	.get_chctl_all_flags = xpc_get_chctl_all_flags_sn2,
-	.send_chctl_closerequest = xpc_send_chctl_closerequest_sn2,
-	.send_chctl_closereply = xpc_send_chctl_closereply_sn2,
-	.send_chctl_openrequest = xpc_send_chctl_openrequest_sn2,
-	.send_chctl_openreply = xpc_send_chctl_openreply_sn2,
-	.send_chctl_opencomplete = xpc_send_chctl_opencomplete_sn2,
-	.process_msg_chctl_flags = xpc_process_msg_chctl_flags_sn2,
-
-	.save_remote_msgqueue_pa = xpc_save_remote_msgqueue_pa_sn2,
-
-	.setup_msg_structures = xpc_setup_msg_structures_sn2,
-	.teardown_msg_structures = xpc_teardown_msg_structures_sn2,
-
-	.indicate_partition_engaged = xpc_indicate_partition_engaged_sn2,
-	.indicate_partition_disengaged = xpc_indicate_partition_disengaged_sn2,
-	.partition_engaged = xpc_partition_engaged_sn2,
-	.any_partition_engaged = xpc_any_partition_engaged_sn2,
-	.assume_partition_disengaged = xpc_assume_partition_disengaged_sn2,
-
-	.n_of_deliverable_payloads = xpc_n_of_deliverable_payloads_sn2,
-	.send_payload = xpc_send_payload_sn2,
-	.get_deliverable_payload = xpc_get_deliverable_payload_sn2,
-	.received_payload = xpc_received_payload_sn2,
-	.notify_senders_of_disconnect = xpc_notify_senders_of_disconnect_sn2,
-};
-
-int
-xpc_init_sn2(void)
-{
-	int ret;
-	size_t buf_size;
-
-	xpc_arch_ops = xpc_arch_ops_sn2;
-
-	if (offsetof(struct xpc_msg_sn2, payload) > XPC_MSG_HDR_MAX_SIZE) {
-		dev_err(xpc_part, "header portion of struct xpc_msg_sn2 is "
-			"larger than %d\n", XPC_MSG_HDR_MAX_SIZE);
-		return -E2BIG;
-	}
-
-	buf_size = max(XPC_RP_VARS_SIZE,
-		       XPC_RP_HEADER_SIZE + XP_NASID_MASK_BYTES_SN2);
-	xpc_remote_copy_buffer_sn2 = xpc_kmalloc_cacheline_aligned(buf_size,
-								   GFP_KERNEL,
-					      &xpc_remote_copy_buffer_base_sn2);
-	if (xpc_remote_copy_buffer_sn2 == NULL) {
-		dev_err(xpc_part, "can't get memory for remote copy buffer\n");
-		return -ENOMEM;
-	}
-
-	/* open up protections for IPI and [potentially] amo operations */
-	xpc_allow_IPI_ops_sn2();
-	xpc_allow_amo_ops_shub_wars_1_1_sn2();
-
-	/*
-	 * This is safe to do before the xpc_hb_checker thread has started
-	 * because the handler releases a wait queue.  If an interrupt is
-	 * received before the thread is waiting, it will not go to sleep,
-	 * but rather immediately process the interrupt.
-	 */
-	ret = request_irq(SGI_XPC_ACTIVATE, xpc_handle_activate_IRQ_sn2, 0,
-			  "xpc hb", NULL);
-	if (ret != 0) {
-		dev_err(xpc_part, "can't register ACTIVATE IRQ handler, "
-			"errno=%d\n", -ret);
-		xpc_disallow_IPI_ops_sn2();
-		kfree(xpc_remote_copy_buffer_base_sn2);
-	}
-	return ret;
-}
-
-void
-xpc_exit_sn2(void)
-{
-	free_irq(SGI_XPC_ACTIVATE, NULL);
-	xpc_disallow_IPI_ops_sn2();
-	kfree(xpc_remote_copy_buffer_base_sn2);
-}
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index 0c6de97dd347..d8a6fe16e4f5 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -48,6 +48,8 @@ struct uv_IO_APIC_route_entry {
 		__reserved_2	: 15,
 		dest		: 32;
 };
+
+#define sn_partition_id 0
 #endif
 
 static struct xpc_heartbeat_uv *xpc_heartbeat_uv;
diff --git a/drivers/misc/sgi-xp/xpnet.c b/drivers/misc/sgi-xp/xpnet.c
index 44d750d98bc8..f7d610a22347 100644
--- a/drivers/misc/sgi-xp/xpnet.c
+++ b/drivers/misc/sgi-xp/xpnet.c
@@ -515,7 +515,7 @@ xpnet_init(void)
 {
 	int result;
 
-	if (!is_shub() && !is_uv())
+	if (!is_uv())
 		return -ENODEV;
 
 	dev_info(xpnet, "registering network device %s\n", XPNET_DEVICE_NAME);
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 11/28] qla1280: remove SGI SN2 support
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (9 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 10/28] misc/sgi-xp: " Christoph Hellwig
@ 2019-08-13  7:24 ` " Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 12/28] qla2xxx: " Christoph Hellwig
                   ` (15 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed, so drop the bits specific to
it from this driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/scsi/qla1280.c | 37 -------------------------------------
 drivers/scsi/qla1280.h |  3 ---
 2 files changed, 40 deletions(-)

diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c
index e5760c4a27f0..832af4213046 100644
--- a/drivers/scsi/qla1280.c
+++ b/drivers/scsi/qla1280.c
@@ -357,10 +357,6 @@
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_tcq.h>
 
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
-#include <asm/sn/io.h>
-#endif
-
 
 /*
  * Compile time Options:
@@ -380,11 +376,6 @@
 
 #define NVRAM_DELAY()			udelay(500)	/* 2 microseconds */
 
-#if defined(__ia64__) && !defined(ia64_platform_is)
-#define ia64_platform_is(foo)		(!strcmp(x, platform_name))
-#endif
-
-
 #define IS_ISP1040(ha) (ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP1020)
 #define IS_ISP1x40(ha) (ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP1020 || \
 			ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP1240)
@@ -1427,15 +1418,6 @@ qla1280_initialize_adapter(struct scsi_qla_host *ha)
 	ha->flags.reset_active = 0;
 	ha->flags.abort_isp_active = 0;
 
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
-	if (ia64_platform_is("sn2")) {
-		printk(KERN_INFO "scsi(%li): Enabling SN2 PCI DMA "
-		       "dual channel lockup workaround\n", ha->host_no);
-		ha->flags.use_pci_vchannel = 1;
-		driver_setup.no_nvram = 1;
-	}
-#endif
-
 	/* TODO: implement support for the 1040 nvram format */
 	if (IS_ISP1040(ha))
 		driver_setup.no_nvram = 1;
@@ -2251,13 +2233,6 @@ qla1280_nvram_config(struct scsi_qla_host *ha)
 	mb[1] = nv->firmware_feature.f.enable_fast_posting;
 	mb[1] |= nv->firmware_feature.f.report_lvd_bus_transition << 1;
 	mb[1] |= nv->firmware_feature.f.disable_synchronous_backoff << 5;
-#if defined(CONFIG_IA64_GENERIC) || defined (CONFIG_IA64_SGI_SN2)
-	if (ia64_platform_is("sn2")) {
-		printk(KERN_INFO "scsi(%li): Enabling SN2 PCI DMA "
-		       "workaround\n", ha->host_no);
-		mb[1] |= nv->firmware_feature.f.unused_9 << 9; /* XXX */
-	}
-#endif
 	status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, mb);
 
 	/* Retry count and delay. */
@@ -2888,12 +2863,6 @@ qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
 				break;
 
 			dma_handle = sg_dma_address(s);
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
-			if (ha->flags.use_pci_vchannel)
-				sn_pci_set_vchan(ha->pdev,
-						 (unsigned long *)&dma_handle,
-						 SCSI_BUS_32(cmd));
-#endif
 			*dword_ptr++ =
 				cpu_to_le32(lower_32_bits(dma_handle));
 			*dword_ptr++ =
@@ -2950,12 +2919,6 @@ qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
 				if (cnt == 5)
 					break;
 				dma_handle = sg_dma_address(s);
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
-				if (ha->flags.use_pci_vchannel)
-					sn_pci_set_vchan(ha->pdev,
-							 (unsigned long *)&dma_handle,
-							 SCSI_BUS_32(cmd));
-#endif
 				*dword_ptr++ =
 					cpu_to_le32(lower_32_bits(dma_handle));
 				*dword_ptr++ =
diff --git a/drivers/scsi/qla1280.h b/drivers/scsi/qla1280.h
index b496206362a9..a1a8aefc7cc3 100644
--- a/drivers/scsi/qla1280.h
+++ b/drivers/scsi/qla1280.h
@@ -1055,9 +1055,6 @@ struct scsi_qla_host {
 		uint32_t reset_active:1;		/* 3 */
 		uint32_t abort_isp_active:1;		/* 4 */
 		uint32_t disable_risc_code_load:1;	/* 5 */
-#ifdef __ia64__
-		uint32_t use_pci_vchannel:1;
-#endif
 	} flags;
 
 	struct nvram nvram;
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 12/28] qla2xxx: remove SGI SN2 support
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (10 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 11/28] qla1280: " Christoph Hellwig
@ 2019-08-13  7:24 ` " Christoph Hellwig
  2019-08-13  7:24 ` [PATCH 13/28] drivers: remove the SGI SN2 IOC3 base support Christoph Hellwig
                   ` (14 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The SGI SN2 support is about to be removed, so drop the bits specific to
it from this driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/scsi/qla2xxx/qla_init.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index da83034d4759..d4c3baec9172 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -4575,20 +4575,6 @@ qla2x00_nvram_config(scsi_qla_host_t *vha)
 		rval = 1;
 	}
 
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
-	/*
-	 * The SN2 does not provide BIOS emulation which means you can't change
-	 * potentially bogus BIOS settings. Force the use of default settings
-	 * for link rate and frame size.  Hope that the rest of the settings
-	 * are valid.
-	 */
-	if (ia64_platform_is("sn2")) {
-		nv->frame_payload_size = 2048;
-		if (IS_QLA23XX(ha))
-			nv->special_options[1] = BIT_7;
-	}
-#endif
-
 	/* Reset Initialization control block */
 	memset(icb, 0, ha->init_cb_size);
 
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 13/28] drivers: remove the SGI SN2 IOC3 base support
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (11 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 12/28] qla2xxx: " Christoph Hellwig
@ 2019-08-13  7:24 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 14/28] drivers: remove the SGI SN2 IOC4 " Christoph Hellwig
                   ` (13 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:24 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The IOC3 is a multi-function chip seen on SGI SN2 and some SGI
MIPS systems.  This removes the last bit of SN2 specific support,
while the bits used by the mips ports are still around (and being
substantially rewritten at the moment).

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/Kconfig                     |   2 -
 arch/ia64/configs/gensparse_defconfig |   1 -
 drivers/Makefile                      |   1 -
 drivers/sn/Kconfig                    |  22 -
 drivers/sn/Makefile                   |   7 -
 drivers/sn/ioc3.c                     | 844 --------------------------
 6 files changed, 877 deletions(-)
 delete mode 100644 drivers/sn/Kconfig
 delete mode 100644 drivers/sn/Makefile
 delete mode 100644 drivers/sn/ioc3.c

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 7468d8e50467..43f3a3076ab2 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -493,8 +493,6 @@ config IA64_HP_AML_NFW
 	  the "force" module parameter, e.g., with the "aml_nfw.force"
 	  kernel command line option.
 
-source "drivers/sn/Kconfig"
-
 config KEXEC
 	bool "kexec system call"
 	depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index d82d07d060d6..5d5ea744f7e6 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -19,7 +19,6 @@ CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_IA64_MCA_RECOVERY=y
 CONFIG_PERFMON=y
 CONFIG_IA64_PALINFO=y
-CONFIG_SGI_IOC3=y
 CONFIG_EFI_VARS=y
 CONFIG_BINFMT_MISC=m
 CONFIG_ACPI_BUTTON=m
diff --git a/drivers/Makefile b/drivers/Makefile
index 6d37564e783c..05be8c798c51 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -132,7 +132,6 @@ obj-y				+= mmc/
 obj-$(CONFIG_MEMSTICK)		+= memstick/
 obj-$(CONFIG_NEW_LEDS)		+= leds/
 obj-$(CONFIG_INFINIBAND)	+= infiniband/
-obj-$(CONFIG_SGI_SN)		+= sn/
 obj-y				+= firmware/
 obj-$(CONFIG_CRYPTO)		+= crypto/
 obj-$(CONFIG_SUPERH)		+= sh/
diff --git a/drivers/sn/Kconfig b/drivers/sn/Kconfig
deleted file mode 100644
index a6c443d31a3c..000000000000
--- a/drivers/sn/Kconfig
+++ /dev/null
@@ -1,22 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Miscellaneous SN-specific devices
-#
-
-menu "SN Devices"
-	depends on SGI_SN
-
-config SGI_IOC3
-	tristate "SGI IOC3 Base IO support"
-	default m
-	---help---
-	This option enables basic support for the SGI IOC3-based Base IO
-	controller card.  This option does not enable any specific
-	functions on such a card, but provides necessary infrastructure
-	for other drivers to utilize.
-
-	If you have an SGI Altix with an IOC3-based
-	I/O controller or a PCI IOC3 serial card say Y.
-	Otherwise say N.
-
-endmenu
diff --git a/drivers/sn/Makefile b/drivers/sn/Makefile
deleted file mode 100644
index f0e809a38b2d..000000000000
--- a/drivers/sn/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for the Altix device drivers.
-#
-#
-
-obj-$(CONFIG_SGI_IOC3) += ioc3.o
diff --git a/drivers/sn/ioc3.c b/drivers/sn/ioc3.c
deleted file mode 100644
index 358025af4918..000000000000
--- a/drivers/sn/ioc3.c
+++ /dev/null
@@ -1,844 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * SGI IOC3 master driver and IRQ demuxer
- *
- * Copyright (c) 2005 Stanislaw Skowronek <skylark@linux-mips.org>
- * Heavily based on similar work by:
- *   Brent Casavant <bcasavan@sgi.com> - IOC4 master driver
- *   Pat Gefre <pfg@sgi.com> - IOC3 serial port IRQ demuxer
- */
-
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/dma-mapping.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-#include <linux/ioc3.h>
-#include <linux/rwsem.h>
-#include <linux/slab.h>
-
-#define IOC3_PCI_SIZE 0x100000
-
-static LIST_HEAD(ioc3_devices);
-static int ioc3_counter;
-static DECLARE_RWSEM(ioc3_devices_rwsem);
-
-static struct ioc3_submodule *ioc3_submodules[IOC3_MAX_SUBMODULES];
-static struct ioc3_submodule *ioc3_ethernet;
-static DEFINE_RWLOCK(ioc3_submodules_lock);
-
-/* NIC probing code */
-
-#define GPCR_MLAN_EN    0x00200000      /* enable MCR to pin 8 */
-
-static inline unsigned mcr_pack(unsigned pulse, unsigned sample)
-{
-	return (pulse << 10) | (sample << 2);
-}
-
-static int nic_wait(struct ioc3_driver_data *idd)
-{
-	unsigned mcr;
-
-        do {
-                mcr = readl(&idd->vma->mcr);
-        } while (!(mcr & 2));
-
-        return mcr & 1;
-}
-
-static int nic_reset(struct ioc3_driver_data *idd)
-{
-        int presence;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	writel(mcr_pack(500, 65), &idd->vma->mcr);
-	presence = nic_wait(idd);
-	local_irq_restore(flags);
-
-	udelay(500);
-
-        return presence;
-}
-
-static int nic_read_bit(struct ioc3_driver_data *idd)
-{
-	int result;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	writel(mcr_pack(6, 13), &idd->vma->mcr);
-	result = nic_wait(idd);
-	local_irq_restore(flags);
-
-	udelay(500);
-
-	return result;
-}
-
-static void nic_write_bit(struct ioc3_driver_data *idd, int bit)
-{
-	if (bit)
-		writel(mcr_pack(6, 110), &idd->vma->mcr);
-	else
-		writel(mcr_pack(80, 30), &idd->vma->mcr);
-
-	nic_wait(idd);
-}
-
-static unsigned nic_read_byte(struct ioc3_driver_data *idd)
-{
-	unsigned result = 0;
-	int i;
-
-	for (i = 0; i < 8; i++)
-		result = (result >> 1) | (nic_read_bit(idd) << 7);
-
-	return result;
-}
-
-static void nic_write_byte(struct ioc3_driver_data *idd, int byte)
-{
-	int i, bit;
-
-	for (i = 8; i; i--) {
-		bit = byte & 1;
-		byte >>= 1;
-
-		nic_write_bit(idd, bit);
-	}
-}
-
-static unsigned long
-nic_find(struct ioc3_driver_data *idd, int *last, unsigned long addr)
-{
-	int a, b, index, disc;
-
-	nic_reset(idd);
-
-	/* Search ROM.  */
-	nic_write_byte(idd, 0xF0);
-
-	/* Algorithm from ``Book of iButton Standards''.  */
-	for (index = 0, disc = 0; index < 64; index++) {
-		a = nic_read_bit(idd);
-		b = nic_read_bit(idd);
-
-		if (a && b) {
-			printk(KERN_WARNING "IOC3 NIC search failed.\n");
-			*last = 0;
-			return 0;
-		}
-
-		if (!a && !b) {
-			if (index == *last) {
-				addr |= 1UL << index;
-			} else if (index > *last) {
-				addr &= ~(1UL << index);
-				disc = index;
-			} else if ((addr & (1UL << index)) == 0)
-				disc = index;
-			nic_write_bit(idd, (addr>>index)&1);
-			continue;
-		} else {
-			if (a)
-				addr |= 1UL << index;
-			else
-				addr &= ~(1UL << index);
-			nic_write_bit(idd, a);
-			continue;
-		}
-	}
-	*last = disc;
-	return addr;
-}
-
-static void nic_addr(struct ioc3_driver_data *idd, unsigned long addr)
-{
-	int index;
-
-	nic_reset(idd);
-	nic_write_byte(idd, 0xF0);
-	for (index = 0; index < 64; index++) {
-		nic_read_bit(idd);
-		nic_read_bit(idd);
-		nic_write_bit(idd, (addr>>index)&1);
-	}
-}
-
-static void crc16_byte(unsigned int *crc, unsigned char db)
-{
-	int i;
-
-	for(i=0;i<8;i++) {
-		*crc <<= 1;
-		if((db^(*crc>>16)) & 1)
-			*crc ^= 0x8005;
-		db >>= 1;
-	}
-	*crc &= 0xFFFF;
-}
-
-static unsigned int crc16_area(unsigned char *dbs, int size, unsigned int crc)
-{
-	while(size--)
-		crc16_byte(&crc, *(dbs++));
-	return crc;
-}
-
-static void crc8_byte(unsigned int *crc, unsigned char db)
-{
-	int i,f;
-
-	for(i=0;i<8;i++) {
-		f = (*crc ^ db) & 1;
-		*crc >>= 1;
-		db >>= 1;
-		if(f)
-			*crc ^= 0x8c;
-	}
-	*crc &= 0xff;
-}
-
-static unsigned int crc8_addr(unsigned long addr)
-{
-	int i;
-	unsigned int crc = 0x00;
-
-	for(i=0;i<8;i++)
-		crc8_byte(&crc, addr>>(i<<3));
-	return crc;
-}
-
-static void
-read_redir_page(struct ioc3_driver_data *idd, unsigned long addr, int page,
-			unsigned char *redir, unsigned char *data)
-{
-	int loops = 16, i;
-
-	while(redir[page] != 0xFF) {
-		page = redir[page]^0xFF;
-		loops--;
-		if(loops<0) {
-			printk(KERN_ERR "IOC3: NIC circular redirection\n");
-			return;
-		}
-	}
-	loops = 3;
-	while(loops>0) {
-		nic_addr(idd, addr);
-		nic_write_byte(idd, 0xF0);
-		nic_write_byte(idd, (page << 5) & 0xE0);
-		nic_write_byte(idd, (page >> 3) & 0x1F);
-		for(i=0;i<0x20;i++)
-			data[i] = nic_read_byte(idd);
-		if(crc16_area(data, 0x20, 0x0000) == 0x800d)
-			return;
-		loops--;
-	}
-	printk(KERN_ERR "IOC3: CRC error in data page\n");
-	for(i=0;i<0x20;i++)
-		data[i] = 0x00;
-}
-
-static void
-read_redir_map(struct ioc3_driver_data *idd, unsigned long addr,
-					 unsigned char *redir)
-{
-	int i,j,loops = 3,crc_ok;
-	unsigned int crc;
-
-	while(loops>0) {
-		crc_ok = 1;
-		nic_addr(idd, addr);
-		nic_write_byte(idd, 0xAA);
-		nic_write_byte(idd, 0x00);
-		nic_write_byte(idd, 0x01);
-		for(i=0;i<64;i+=8) {
-			for(j=0;j<8;j++)
-				redir[i+j] = nic_read_byte(idd);
-			crc = crc16_area(redir+i, 8, (i==0)?0x8707:0x0000);
-			crc16_byte(&crc, nic_read_byte(idd));
-			crc16_byte(&crc, nic_read_byte(idd));
-			if(crc != 0x800d)
-				crc_ok = 0;
-		}
-		if(crc_ok)
-			return;
-		loops--;
-	}
-	printk(KERN_ERR "IOC3: CRC error in redirection page\n");
-	for(i=0;i<64;i++)
-		redir[i] = 0xFF;
-}
-
-static void read_nic(struct ioc3_driver_data *idd, unsigned long addr)
-{
-	unsigned char redir[64];
-	unsigned char data[64],part[32];
-	int i,j;
-
-	/* read redirections */
-	read_redir_map(idd, addr, redir);
-	/* read data pages */
-	read_redir_page(idd, addr, 0, redir, data);
-	read_redir_page(idd, addr, 1, redir, data+32);
-	/* assemble the part # */
-	j=0;
-	for(i=0;i<19;i++)
-		if(data[i+11] != ' ')
-			part[j++] = data[i+11];
-	for(i=0;i<6;i++)
-		if(data[i+32] != ' ')
-			part[j++] = data[i+32];
-	part[j] = 0;
-	/* skip Octane power supplies */
-	if(!strncmp(part, "060-0035-", 9))
-		return;
-	if(!strncmp(part, "060-0038-", 9))
-		return;
-	strcpy(idd->nic_part, part);
-	/* assemble the serial # */
-	j=0;
-	for(i=0;i<10;i++)
-		if(data[i+1] != ' ')
-			idd->nic_serial[j++] = data[i+1];
-	idd->nic_serial[j] = 0;
-}
-
-static void read_mac(struct ioc3_driver_data *idd, unsigned long addr)
-{
-	int i, loops = 3;
-	unsigned char data[13];
-
-	while(loops>0) {
-		nic_addr(idd, addr);
-		nic_write_byte(idd, 0xF0);
-		nic_write_byte(idd, 0x00);
-		nic_write_byte(idd, 0x00);
-		nic_read_byte(idd);
-		for(i=0;i<13;i++)
-			data[i] = nic_read_byte(idd);
-		if(crc16_area(data, 13, 0x0000) == 0x800d) {
-			for(i=10;i>4;i--)
-				idd->nic_mac[10-i] = data[i];
-			return;
-		}
-		loops--;
-	}
-	printk(KERN_ERR "IOC3: CRC error in MAC address\n");
-	for(i=0;i<6;i++)
-		idd->nic_mac[i] = 0x00;
-}
-
-static void probe_nic(struct ioc3_driver_data *idd)
-{
-        int save = 0, loops = 3;
-        unsigned long first, addr;
-
-        writel(GPCR_MLAN_EN, &idd->vma->gpcr_s);
-
-        while(loops>0) {
-                idd->nic_part[0] = 0;
-                idd->nic_serial[0] = 0;
-                addr = first = nic_find(idd, &save, 0);
-                if(!first)
-                        return;
-                while(1) {
-                        if(crc8_addr(addr))
-                                break;
-                        else {
-                                switch(addr & 0xFF) {
-                                case 0x0B:
-                                        read_nic(idd, addr);
-                                        break;
-                                case 0x09:
-                                case 0x89:
-                                case 0x91:
-                                        read_mac(idd, addr);
-                                        break;
-                                }
-                        }
-                        addr = nic_find(idd, &save, addr);
-                        if(addr == first)
-                                return;
-                }
-                loops--;
-        }
-        printk(KERN_ERR "IOC3: CRC error in NIC address\n");
-}
-
-/* Interrupts */
-
-static void write_ireg(struct ioc3_driver_data *idd, uint32_t val, int which)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&idd->ir_lock, flags);
-	switch (which) {
-	case IOC3_W_IES:
-		writel(val, &idd->vma->sio_ies);
-		break;
-	case IOC3_W_IEC:
-		writel(val, &idd->vma->sio_iec);
-		break;
-	}
-	spin_unlock_irqrestore(&idd->ir_lock, flags);
-}
-static inline uint32_t get_pending_intrs(struct ioc3_driver_data *idd)
-{
-	unsigned long flag;
-	uint32_t intrs = 0;
-
-	spin_lock_irqsave(&idd->ir_lock, flag);
-	intrs = readl(&idd->vma->sio_ir);
-	intrs &= readl(&idd->vma->sio_ies);
-	spin_unlock_irqrestore(&idd->ir_lock, flag);
-	return intrs;
-}
-
-static irqreturn_t ioc3_intr_io(int irq, void *arg)
-{
-	unsigned long flags;
-	struct ioc3_driver_data *idd = arg;
-	int handled = 1, id;
-	unsigned int pending;
-
-	read_lock_irqsave(&ioc3_submodules_lock, flags);
-
-	if(idd->dual_irq && readb(&idd->vma->eisr)) {
-		/* send Ethernet IRQ to the driver */
-		if(ioc3_ethernet && idd->active[ioc3_ethernet->id] &&
-						ioc3_ethernet->intr) {
-			handled = handled && !ioc3_ethernet->intr(ioc3_ethernet,
-							idd, 0);
-		}
-	}
-	pending = get_pending_intrs(idd);	/* look at the IO IRQs */
-
-	for(id=0;id<IOC3_MAX_SUBMODULES;id++) {
-		if(idd->active[id] && ioc3_submodules[id]
-				&& (pending & ioc3_submodules[id]->irq_mask)
-				&& ioc3_submodules[id]->intr) {
-			write_ireg(idd, ioc3_submodules[id]->irq_mask,
-							IOC3_W_IEC);
-			if(!ioc3_submodules[id]->intr(ioc3_submodules[id],
-				   idd, pending & ioc3_submodules[id]->irq_mask))
-				pending &= ~ioc3_submodules[id]->irq_mask;
-			if (ioc3_submodules[id]->reset_mask)
-				write_ireg(idd, ioc3_submodules[id]->irq_mask,
-							IOC3_W_IES);
-		}
-	}
-	read_unlock_irqrestore(&ioc3_submodules_lock, flags);
-	if(pending) {
-		printk(KERN_WARNING
-		  "IOC3: Pending IRQs 0x%08x discarded and disabled\n",pending);
-		write_ireg(idd, pending, IOC3_W_IEC);
-		handled = 1;
-	}
-	return handled?IRQ_HANDLED:IRQ_NONE;
-}
-
-static irqreturn_t ioc3_intr_eth(int irq, void *arg)
-{
-	unsigned long flags;
-	struct ioc3_driver_data *idd = (struct ioc3_driver_data *)arg;
-	int handled = 1;
-
-	if(!idd->dual_irq)
-		return IRQ_NONE;
-	read_lock_irqsave(&ioc3_submodules_lock, flags);
-	if(ioc3_ethernet && idd->active[ioc3_ethernet->id]
-				&& ioc3_ethernet->intr)
-		handled = handled && !ioc3_ethernet->intr(ioc3_ethernet, idd, 0);
-	read_unlock_irqrestore(&ioc3_submodules_lock, flags);
-	return handled?IRQ_HANDLED:IRQ_NONE;
-}
-
-void ioc3_enable(struct ioc3_submodule *is,
-				struct ioc3_driver_data *idd, unsigned int irqs)
-{
-	write_ireg(idd, irqs & is->irq_mask, IOC3_W_IES);
-}
-
-void ioc3_ack(struct ioc3_submodule *is, struct ioc3_driver_data *idd,
-				unsigned int irqs)
-{
-	writel(irqs & is->irq_mask, &idd->vma->sio_ir);
-}
-
-void ioc3_disable(struct ioc3_submodule *is,
-				struct ioc3_driver_data *idd, unsigned int irqs)
-{
-	write_ireg(idd, irqs & is->irq_mask, IOC3_W_IEC);
-}
-
-void ioc3_gpcr_set(struct ioc3_driver_data *idd, unsigned int val)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&idd->gpio_lock, flags);
-	writel(val, &idd->vma->gpcr_s);
-	spin_unlock_irqrestore(&idd->gpio_lock, flags);
-}
-
-/* Keep it simple, stupid! */
-static int find_slot(void **tab, int max)
-{
-	int i;
-	for(i=0;i<max;i++)
-		if(!(tab[i]))
-			return i;
-	return -1;
-}
-
-/* Register an IOC3 submodule */
-int ioc3_register_submodule(struct ioc3_submodule *is)
-{
-	struct ioc3_driver_data *idd;
-	int alloc_id;
-	unsigned long flags;
-
-	write_lock_irqsave(&ioc3_submodules_lock, flags);
-	alloc_id = find_slot((void **)ioc3_submodules, IOC3_MAX_SUBMODULES);
-	if(alloc_id != -1) {
-		ioc3_submodules[alloc_id] = is;
-		if(is->ethernet) {
-			if(ioc3_ethernet==NULL)
-				ioc3_ethernet=is;
-			else
-				printk(KERN_WARNING
-				  "IOC3 Ethernet module already registered!\n");
-		}
-	}
-	write_unlock_irqrestore(&ioc3_submodules_lock, flags);
-
-	if(alloc_id == -1) {
-		printk(KERN_WARNING "Increase IOC3_MAX_SUBMODULES!\n");
-		return -ENOMEM;
-	}
-
-	is->id=alloc_id;
-
-	/* Initialize submodule for each IOC3 */
-	if (!is->probe)
-		return 0;
-
-	down_read(&ioc3_devices_rwsem);
-	list_for_each_entry(idd, &ioc3_devices, list) {
-		/* set to 1 for IRQs in probe */
-		idd->active[alloc_id] = 1;
-		idd->active[alloc_id] = !is->probe(is, idd);
-	}
-	up_read(&ioc3_devices_rwsem);
-
-	return 0;
-}
-
-/* Unregister an IOC3 submodule */
-void ioc3_unregister_submodule(struct ioc3_submodule *is)
-{
-	struct ioc3_driver_data *idd;
-	unsigned long flags;
-
-	write_lock_irqsave(&ioc3_submodules_lock, flags);
-	if(ioc3_submodules[is->id]==is)
-		ioc3_submodules[is->id]=NULL;
-	else
-		printk(KERN_WARNING
-			"IOC3 submodule %s has wrong ID.\n",is->name);
-	if(ioc3_ethernet==is)
-		ioc3_ethernet = NULL;
-	write_unlock_irqrestore(&ioc3_submodules_lock, flags);
-
-	/* Remove submodule for each IOC3 */
-	down_read(&ioc3_devices_rwsem);
-	list_for_each_entry(idd, &ioc3_devices, list)
-		if(idd->active[is->id]) {
-			if(is->remove)
-				if(is->remove(is, idd))
-					printk(KERN_WARNING
-					       "%s: IOC3 submodule %s remove failed "
-					       "for pci_dev %s.\n",
-					       __func__, module_name(is->owner),
-					       pci_name(idd->pdev));
-			idd->active[is->id] = 0;
-			if(is->irq_mask)
-				write_ireg(idd, is->irq_mask, IOC3_W_IEC);
-		}
-	up_read(&ioc3_devices_rwsem);
-}
-
-/*********************
- * Device management *
- *********************/
-
-static char *ioc3_class_names[] = { "unknown", "IP27 BaseIO", "IP30 system",
-			"MENET 1/2/3", "MENET 4", "CADduo", "Altix Serial" };
-
-static int ioc3_class(struct ioc3_driver_data *idd)
-{
-	int res = IOC3_CLASS_NONE;
-	/* NIC-based logic */
-	if(!strncmp(idd->nic_part, "030-0891-", 9))
-		res = IOC3_CLASS_BASE_IP30;
-	if(!strncmp(idd->nic_part, "030-1155-", 9))
-		res = IOC3_CLASS_CADDUO;
-	if(!strncmp(idd->nic_part, "030-1657-", 9))
-		res = IOC3_CLASS_SERIAL;
-	if(!strncmp(idd->nic_part, "030-1664-", 9))
-		res = IOC3_CLASS_SERIAL;
-	/* total random heuristics */
-#ifdef CONFIG_SGI_IP27
-	if(!idd->nic_part[0])
-		res = IOC3_CLASS_BASE_IP27;
-#endif
-	/* print educational message */
-	printk(KERN_INFO "IOC3 part: [%s], serial: [%s] => class %s\n",
-			idd->nic_part, idd->nic_serial, ioc3_class_names[res]);
-	return res;
-}
-/* Adds a new instance of an IOC3 card */
-static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
-{
-	struct ioc3_driver_data *idd;
-	uint32_t pcmd;
-	int ret, id;
-
-	/* Enable IOC3 and take ownership of it */
-	if ((ret = pci_enable_device(pdev))) {
-		printk(KERN_WARNING
-		       "%s: Failed to enable IOC3 device for pci_dev %s.\n",
-		       __func__, pci_name(pdev));
-		goto out;
-	}
-	pci_set_master(pdev);
-
-#ifdef USE_64BIT_DMA
-        ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-        if (!ret) {
-                ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-                if (ret < 0) {
-                        printk(KERN_WARNING "%s: Unable to obtain 64 bit DMA "
-                               "for consistent allocations\n",
-				__func__);
-                }
-	}
-#endif
-
-	/* Set up per-IOC3 data */
-	idd = kzalloc(sizeof(struct ioc3_driver_data), GFP_KERNEL);
-	if (!idd) {
-		printk(KERN_WARNING
-		       "%s: Failed to allocate IOC3 data for pci_dev %s.\n",
-		       __func__, pci_name(pdev));
-		ret = -ENODEV;
-		goto out_idd;
-	}
-	spin_lock_init(&idd->ir_lock);
-	spin_lock_init(&idd->gpio_lock);
-	idd->pdev = pdev;
-
-	/* Map all IOC3 registers.  These are shared between subdevices
-	 * so the main IOC3 module manages them.
-	 */
-	idd->pma = pci_resource_start(pdev, 0);
-	if (!idd->pma) {
-		printk(KERN_WARNING
-		       "%s: Unable to find IOC3 resource "
-		       "for pci_dev %s.\n",
-		       __func__, pci_name(pdev));
-		ret = -ENODEV;
-		goto out_pci;
-	}
-	if (!request_mem_region(idd->pma, IOC3_PCI_SIZE, "ioc3")) {
-		printk(KERN_WARNING
-		       "%s: Unable to request IOC3 region "
-		       "for pci_dev %s.\n",
-		       __func__, pci_name(pdev));
-		ret = -ENODEV;
-		goto out_pci;
-	}
-	idd->vma = ioremap(idd->pma, IOC3_PCI_SIZE);
-	if (!idd->vma) {
-		printk(KERN_WARNING
-		       "%s: Unable to remap IOC3 region "
-		       "for pci_dev %s.\n",
-		       __func__, pci_name(pdev));
-		ret = -ENODEV;
-		goto out_misc_region;
-	}
-
-	/* Track PCI-device specific data */
-	pci_set_drvdata(pdev, idd);
-	down_write(&ioc3_devices_rwsem);
-	list_add_tail(&idd->list, &ioc3_devices);
-	idd->id = ioc3_counter++;
-	up_write(&ioc3_devices_rwsem);
-
-	idd->gpdr_shadow = readl(&idd->vma->gpdr);
-
-	/* Read IOC3 NIC contents */
-	probe_nic(idd);
-
-	/* Detect IOC3 class */
-	idd->class = ioc3_class(idd);
-
-	/* Initialize IOC3 */
-       pci_read_config_dword(pdev, PCI_COMMAND, &pcmd);
-       pci_write_config_dword(pdev, PCI_COMMAND,
-                               pcmd | PCI_COMMAND_MEMORY |
-                               PCI_COMMAND_PARITY | PCI_COMMAND_SERR |
-                               PCI_SCR_DROP_MODE_EN);
-
-	write_ireg(idd, ~0, IOC3_W_IEC);
-	writel(~0, &idd->vma->sio_ir);
-
-	/* Set up IRQs */
-	if(idd->class == IOC3_CLASS_BASE_IP30
-				|| idd->class == IOC3_CLASS_BASE_IP27) {
-		writel(0, &idd->vma->eier);
-		writel(~0, &idd->vma->eisr);
-
-		idd->dual_irq = 1;
-		if (!request_irq(pdev->irq, ioc3_intr_eth, IRQF_SHARED,
-				 "ioc3-eth", (void *)idd)) {
-			idd->irq_eth = pdev->irq;
-		} else {
-			printk(KERN_WARNING
-			       "%s : request_irq fails for IRQ 0x%x\n ",
-			       __func__, pdev->irq);
-		}
-		if (!request_irq(pdev->irq+2, ioc3_intr_io, IRQF_SHARED,
-				 "ioc3-io", (void *)idd)) {
-			idd->irq_io = pdev->irq+2;
-		} else {
-			printk(KERN_WARNING
-			       "%s : request_irq fails for IRQ 0x%x\n ",
-			       __func__, pdev->irq+2);
-		}
-	} else {
-		if (!request_irq(pdev->irq, ioc3_intr_io, IRQF_SHARED,
-				 "ioc3", (void *)idd)) {
-			idd->irq_io = pdev->irq;
-		} else {
-			printk(KERN_WARNING
-			       "%s : request_irq fails for IRQ 0x%x\n ",
-			       __func__, pdev->irq);
-		}
-	}
-
-	/* Add this IOC3 to all submodules */
-	for(id=0;id<IOC3_MAX_SUBMODULES;id++)
-		if(ioc3_submodules[id] && ioc3_submodules[id]->probe) {
-			idd->active[id] = 1;
-			idd->active[id] = !ioc3_submodules[id]->probe
-						(ioc3_submodules[id], idd);
-		}
-
-	printk(KERN_INFO "IOC3 Master Driver loaded for %s\n", pci_name(pdev));
-
-	return 0;
-
-out_misc_region:
-	release_mem_region(idd->pma, IOC3_PCI_SIZE);
-out_pci:
-	kfree(idd);
-out_idd:
-	pci_disable_device(pdev);
-out:
-	return ret;
-}
-
-/* Removes a particular instance of an IOC3 card. */
-static void ioc3_remove(struct pci_dev *pdev)
-{
-	int id;
-	struct ioc3_driver_data *idd;
-
-	idd = pci_get_drvdata(pdev);
-
-	/* Remove this IOC3 from all submodules */
-	for(id=0;id<IOC3_MAX_SUBMODULES;id++)
-		if(idd->active[id]) {
-			if(ioc3_submodules[id] && ioc3_submodules[id]->remove)
-				if(ioc3_submodules[id]->remove(ioc3_submodules[id],
-								idd))
-					printk(KERN_WARNING
-					       "%s: IOC3 submodule 0x%s remove failed "
-					       "for pci_dev %s.\n",
-						__func__,
-						module_name(ioc3_submodules[id]->owner),
-					        pci_name(pdev));
-			idd->active[id] = 0;
-		}
-
-	/* Clear and disable all IRQs */
-	write_ireg(idd, ~0, IOC3_W_IEC);
-	writel(~0, &idd->vma->sio_ir);
-
-	/* Release resources */
-	free_irq(idd->irq_io, (void *)idd);
-	if(idd->dual_irq)
-		free_irq(idd->irq_eth, (void *)idd);
-	iounmap(idd->vma);
-	release_mem_region(idd->pma, IOC3_PCI_SIZE);
-
-	/* Disable IOC3 and relinquish */
-	pci_disable_device(pdev);
-
-	/* Remove and free driver data */
-	down_write(&ioc3_devices_rwsem);
-	list_del(&idd->list);
-	up_write(&ioc3_devices_rwsem);
-	kfree(idd);
-}
-
-static struct pci_device_id ioc3_id_table[] = {
-	{PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3, PCI_ANY_ID, PCI_ANY_ID},
-	{0}
-};
-
-static struct pci_driver ioc3_driver = {
-	.name = "IOC3",
-	.id_table = ioc3_id_table,
-	.probe = ioc3_probe,
-	.remove = ioc3_remove,
-};
-
-MODULE_DEVICE_TABLE(pci, ioc3_id_table);
-
-/*********************
- * Module management *
- *********************/
-
-/* Module load */
-static int __init ioc3_init(void)
-{
-	if (ia64_platform_is("sn2"))
-		return pci_register_driver(&ioc3_driver);
-	return -ENODEV;
-}
-
-/* Module unload */
-static void __exit ioc3_exit(void)
-{
-	pci_unregister_driver(&ioc3_driver);
-}
-
-module_init(ioc3_init);
-module_exit(ioc3_exit);
-
-MODULE_AUTHOR("Stanislaw Skowronek <skylark@linux-mips.org>");
-MODULE_DESCRIPTION("PCI driver for SGI IOC3");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL_GPL(ioc3_register_submodule);
-EXPORT_SYMBOL_GPL(ioc3_unregister_submodule);
-EXPORT_SYMBOL_GPL(ioc3_ack);
-EXPORT_SYMBOL_GPL(ioc3_gpcr_set);
-EXPORT_SYMBOL_GPL(ioc3_disable);
-EXPORT_SYMBOL_GPL(ioc3_enable);
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 14/28] drivers: remove the SGI SN2 IOC4 base support
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (12 preceding siblings ...)
  2019-08-13  7:24 ` [PATCH 13/28] drivers: remove the SGI SN2 IOC3 base support Christoph Hellwig
@ 2019-08-13  7:25 ` " Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 16/28] ia64: remove now unused machvec indirections Christoph Hellwig
                   ` (12 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The IOC4 is a multi-function chip seen on SGI SN2 and some SGI MIPS
systems.  This removes the base driver, which while not having an SN2
Kconfig dependency was only for sub-drivers that had one.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 Documentation/driver-api/sgi-ioc4.rst    |  49 ---
 arch/ia64/configs/generic_defconfig      |   1 -
 arch/ia64/configs/gensparse_defconfig    |   1 -
 arch/mips/configs/bigsur_defconfig       |   1 -
 arch/mips/configs/ip32_defconfig         |   1 -
 arch/mips/configs/markeins_defconfig     |   1 -
 arch/mips/configs/rm200_defconfig        |   1 -
 arch/mips/configs/sb1250_swarm_defconfig |   1 -
 drivers/misc/Kconfig                     |  12 -
 drivers/misc/Makefile                    |   1 -
 drivers/misc/ioc4.c                      | 498 -----------------------
 include/linux/ioc4.h                     | 184 ---------
 include/linux/pci_ids.h                  |   1 -
 13 files changed, 752 deletions(-)
 delete mode 100644 Documentation/driver-api/sgi-ioc4.rst
 delete mode 100644 drivers/misc/ioc4.c
 delete mode 100644 include/linux/ioc4.h

diff --git a/Documentation/driver-api/sgi-ioc4.rst b/Documentation/driver-api/sgi-ioc4.rst
deleted file mode 100644
index 72709222d3c0..000000000000
--- a/Documentation/driver-api/sgi-ioc4.rst
+++ /dev/null
@@ -1,49 +0,0 @@
-====================================
-SGI IOC4 PCI (multi function) device
-====================================
-
-The SGI IOC4 PCI device is a bit of a strange beast, so some notes on
-it are in order.
-
-First, even though the IOC4 performs multiple functions, such as an
-IDE controller, a serial controller, a PS/2 keyboard/mouse controller,
-and an external interrupt mechanism, it's not implemented as a
-multifunction device.  The consequence of this from a software
-standpoint is that all these functions share a single IRQ, and
-they can't all register to own the same PCI device ID.  To make
-matters a bit worse, some of the register blocks (and even registers
-themselves) present in IOC4 are mixed-purpose between these several
-functions, meaning that there's no clear "owning" device driver.
-
-The solution is to organize the IOC4 driver into several independent
-drivers, "ioc4", "sgiioc4", and "ioc4_serial".  Note that there is no
-PS/2 controller driver as this functionality has never been wired up
-on a shipping IO card.
-
-ioc4
-====
-This is the core (or shim) driver for IOC4.  It is responsible for
-initializing the basic functionality of the chip, and allocating
-the PCI resources that are shared between the IOC4 functions.
-
-This driver also provides registration functions that the other
-IOC4 drivers can call to make their presence known.  Each driver
-needs to provide a probe and remove function, which are invoked
-by the core driver at appropriate times.  The interface of these
-IOC4 function probe and remove operations isn't precisely the same
-as PCI device probe and remove operations, but is logically the
-same operation.
-
-sgiioc4
-=======
-This is the IDE driver for IOC4.  Its name isn't very descriptive
-simply for historical reasons (it used to be the only IOC4 driver
-component).  There's not much to say about it other than it hooks
-up to the ioc4 driver via the appropriate registration, probe, and
-remove functions.
-
-ioc4_serial
-===========
-This is the serial driver for IOC4.  There's not much to say about it
-other than it hooks up to the ioc4 driver via the appropriate registration,
-probe, and remove functions.
diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 8dd921dce4b5..661d90b3e148 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -44,7 +44,6 @@ CONFIG_BLK_DEV_LOOP=m
 CONFIG_BLK_DEV_CRYPTOLOOP=m
 CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_RAM=y
-CONFIG_SGI_IOC4=y
 CONFIG_SGI_XP=m
 CONFIG_IDE=y
 CONFIG_BLK_DEV_IDECD=y
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 5d5ea744f7e6..7844e6a956a4 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -36,7 +36,6 @@ CONFIG_BLK_DEV_LOOP=m
 CONFIG_BLK_DEV_CRYPTOLOOP=m
 CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_RAM=y
-CONFIG_SGI_IOC4=y
 CONFIG_IDE=y
 CONFIG_BLK_DEV_IDECD=y
 CONFIG_IDE_GENERIC=y
diff --git a/arch/mips/configs/bigsur_defconfig b/arch/mips/configs/bigsur_defconfig
index 66566026409d..f14ad0538f4e 100644
--- a/arch/mips/configs/bigsur_defconfig
+++ b/arch/mips/configs/bigsur_defconfig
@@ -103,7 +103,6 @@ CONFIG_FW_LOADER=m
 CONFIG_BLK_DEV_LOOP=m
 CONFIG_BLK_DEV_CRYPTOLOOP=m
 CONFIG_BLK_DEV_NBD=m
-CONFIG_SGI_IOC4=m
 CONFIG_EEPROM_LEGACY=y
 CONFIG_EEPROM_MAX6875=y
 CONFIG_IDE=y
diff --git a/arch/mips/configs/ip32_defconfig b/arch/mips/configs/ip32_defconfig
index 572cab91670c..370884018aad 100644
--- a/arch/mips/configs/ip32_defconfig
+++ b/arch/mips/configs/ip32_defconfig
@@ -46,7 +46,6 @@ CONFIG_CONNECTOR=y
 CONFIG_BLK_DEV_LOOP=m
 CONFIG_BLK_DEV_CRYPTOLOOP=m
 CONFIG_BLK_DEV_NBD=m
-CONFIG_SGI_IOC4=y
 CONFIG_RAID_ATTRS=y
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
diff --git a/arch/mips/configs/markeins_defconfig b/arch/mips/configs/markeins_defconfig
index ae93a94f8c71..507ad91b21e7 100644
--- a/arch/mips/configs/markeins_defconfig
+++ b/arch/mips/configs/markeins_defconfig
@@ -117,7 +117,6 @@ CONFIG_MTD_CFI_AMDSTD=y
 CONFIG_MTD_PHYSMAP=y
 CONFIG_BLK_DEV_LOOP=m
 CONFIG_BLK_DEV_CRYPTOLOOP=m
-CONFIG_SGI_IOC4=m
 CONFIG_SCSI=m
 # CONFIG_SCSI_PROC_FS is not set
 CONFIG_BLK_DEV_SD=m
diff --git a/arch/mips/configs/rm200_defconfig b/arch/mips/configs/rm200_defconfig
index 0f4b09f8a0ee..8762e75f5d5f 100644
--- a/arch/mips/configs/rm200_defconfig
+++ b/arch/mips/configs/rm200_defconfig
@@ -198,7 +198,6 @@ CONFIG_BLK_DEV_SX8=m
 CONFIG_BLK_DEV_RAM=m
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_ATA_OVER_ETH=m
-CONFIG_SGI_IOC4=m
 CONFIG_RAID_ATTRS=m
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
diff --git a/arch/mips/configs/sb1250_swarm_defconfig b/arch/mips/configs/sb1250_swarm_defconfig
index 6883ea4477d4..bb0b1b22ebe1 100644
--- a/arch/mips/configs/sb1250_swarm_defconfig
+++ b/arch/mips/configs/sb1250_swarm_defconfig
@@ -49,7 +49,6 @@ CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_SIZE=9220
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_ATA_OVER_ETH=m
-CONFIG_SGI_IOC4=m
 CONFIG_IDE=y
 CONFIG_BLK_DEV_IDECD=y
 CONFIG_BLK_DEV_IDETAPE=y
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 299032693934..423d2d26d8f7 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -126,18 +126,6 @@ config INTEL_MID_PTI
 	  an Intel Atom (non-netbook) mobile device containing a MIPI
 	  P1149.7 standard implementation.
 
-config SGI_IOC4
-	tristate "SGI IOC4 Base IO support"
-	depends on PCI
-	---help---
-	  This option enables basic support for the IOC4 chip on certain
-	  SGI IO controller cards (IO9, IO10, and PCI-RT).  This option
-	  does not enable any specific functions on such a card, but provides
-	  necessary infrastructure for other drivers to utilize.
-
-	  If you have an SGI Altix with an IOC4-based card say Y.
-	  Otherwise say N.
-
 config TIFM_CORE
 	tristate "TI Flash Media interface support"
 	depends on PCI
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index abd8ae249746..8dae0a976200 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -21,7 +21,6 @@ obj-$(CONFIG_QCOM_COINCELL)	+= qcom-coincell.o
 obj-$(CONFIG_QCOM_FASTRPC)	+= fastrpc.o
 obj-$(CONFIG_SENSORS_BH1770)	+= bh1770glc.o
 obj-$(CONFIG_SENSORS_APDS990X)	+= apds990x.o
-obj-$(CONFIG_SGI_IOC4)		+= ioc4.o
 obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
 obj-$(CONFIG_KGDB_TESTS)	+= kgdbts.o
 obj-$(CONFIG_SGI_XP)		+= sgi-xp/
diff --git a/drivers/misc/ioc4.c b/drivers/misc/ioc4.c
deleted file mode 100644
index 9d0445a567db..000000000000
--- a/drivers/misc/ioc4.c
+++ /dev/null
@@ -1,498 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2005-2006 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-/* This file contains the master driver module for use by SGI IOC4 subdrivers.
- *
- * It allocates any resources shared between multiple subdevices, and
- * provides accessor functions (where needed) and the like for those
- * resources.  It also provides a mechanism for the subdevice modules
- * to support loading and unloading.
- *
- * Non-shared resources (e.g. external interrupt A_INT_OUT register page
- * alias, serial port and UART registers) are handled by the subdevice
- * modules themselves.
- *
- * This is all necessary because IOC4 is not implemented as a multi-function
- * PCI device, but an amalgamation of disparate registers for several
- * types of device (ATA, serial, external interrupts).  The normal
- * resource management in the kernel doesn't have quite the right interfaces
- * to handle this situation (e.g. multiple modules can't claim the same
- * PCI ID), thus this IOC4 master module.
- */
-
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/ioc4.h>
-#include <linux/ktime.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/time.h>
-#include <asm/io.h>
-
-/***************
- * Definitions *
- ***************/
-
-/* Tweakable values */
-
-/* PCI bus speed detection/calibration */
-#define IOC4_CALIBRATE_COUNT 63		/* Calibration cycle period */
-#define IOC4_CALIBRATE_CYCLES 256	/* Average over this many cycles */
-#define IOC4_CALIBRATE_DISCARD 2	/* Discard first few cycles */
-#define IOC4_CALIBRATE_LOW_MHZ 25	/* Lower bound on bus speed sanity */
-#define IOC4_CALIBRATE_HIGH_MHZ 75	/* Upper bound on bus speed sanity */
-#define IOC4_CALIBRATE_DEFAULT_MHZ 66	/* Assumed if sanity check fails */
-
-/************************
- * Submodule management *
- ************************/
-
-static DEFINE_MUTEX(ioc4_mutex);
-
-static LIST_HEAD(ioc4_devices);
-static LIST_HEAD(ioc4_submodules);
-
-/* Register an IOC4 submodule */
-int
-ioc4_register_submodule(struct ioc4_submodule *is)
-{
-	struct ioc4_driver_data *idd;
-
-	mutex_lock(&ioc4_mutex);
-	list_add(&is->is_list, &ioc4_submodules);
-
-	/* Initialize submodule for each IOC4 */
-	if (!is->is_probe)
-		goto out;
-
-	list_for_each_entry(idd, &ioc4_devices, idd_list) {
-		if (is->is_probe(idd)) {
-			printk(KERN_WARNING
-			       "%s: IOC4 submodule %s probe failed "
-			       "for pci_dev %s",
-			       __func__, module_name(is->is_owner),
-			       pci_name(idd->idd_pdev));
-		}
-	}
- out:
-	mutex_unlock(&ioc4_mutex);
-	return 0;
-}
-
-/* Unregister an IOC4 submodule */
-void
-ioc4_unregister_submodule(struct ioc4_submodule *is)
-{
-	struct ioc4_driver_data *idd;
-
-	mutex_lock(&ioc4_mutex);
-	list_del(&is->is_list);
-
-	/* Remove submodule for each IOC4 */
-	if (!is->is_remove)
-		goto out;
-
-	list_for_each_entry(idd, &ioc4_devices, idd_list) {
-		if (is->is_remove(idd)) {
-			printk(KERN_WARNING
-			       "%s: IOC4 submodule %s remove failed "
-			       "for pci_dev %s.\n",
-			       __func__, module_name(is->is_owner),
-			       pci_name(idd->idd_pdev));
-		}
-	}
- out:
-	mutex_unlock(&ioc4_mutex);
-}
-
-/*********************
- * Device management *
- *********************/
-
-#define IOC4_CALIBRATE_LOW_LIMIT \
-	(1000*IOC4_EXTINT_COUNT_DIVISOR/IOC4_CALIBRATE_LOW_MHZ)
-#define IOC4_CALIBRATE_HIGH_LIMIT \
-	(1000*IOC4_EXTINT_COUNT_DIVISOR/IOC4_CALIBRATE_HIGH_MHZ)
-#define IOC4_CALIBRATE_DEFAULT \
-	(1000*IOC4_EXTINT_COUNT_DIVISOR/IOC4_CALIBRATE_DEFAULT_MHZ)
-
-#define IOC4_CALIBRATE_END \
-	(IOC4_CALIBRATE_CYCLES + IOC4_CALIBRATE_DISCARD)
-
-#define IOC4_INT_OUT_MODE_TOGGLE 0x7	/* Toggle INT_OUT every COUNT+1 ticks */
-
-/* Determines external interrupt output clock period of the PCI bus an
- * IOC4 is attached to.  This value can be used to determine the PCI
- * bus speed.
- *
- * IOC4 has a design feature that various internal timers are derived from
- * the PCI bus clock.  This causes IOC4 device drivers to need to take the
- * bus speed into account when setting various register values (e.g. INT_OUT
- * register COUNT field, UART divisors, etc).  Since this information is
- * needed by several subdrivers, it is determined by the main IOC4 driver,
- * even though the following code utilizes external interrupt registers
- * to perform the speed calculation.
- */
-static void
-ioc4_clock_calibrate(struct ioc4_driver_data *idd)
-{
-	union ioc4_int_out int_out;
-	union ioc4_gpcr gpcr;
-	unsigned int state, last_state;
-	uint64_t start, end, period;
-	unsigned int count;
-
-	/* Enable output */
-	gpcr.raw = 0;
-	gpcr.fields.dir = IOC4_GPCR_DIR_0;
-	gpcr.fields.int_out_en = 1;
-	writel(gpcr.raw, &idd->idd_misc_regs->gpcr_s.raw);
-
-	/* Reset to power-on state */
-	writel(0, &idd->idd_misc_regs->int_out.raw);
-
-	/* Set up square wave */
-	int_out.raw = 0;
-	int_out.fields.count = IOC4_CALIBRATE_COUNT;
-	int_out.fields.mode = IOC4_INT_OUT_MODE_TOGGLE;
-	int_out.fields.diag = 0;
-	writel(int_out.raw, &idd->idd_misc_regs->int_out.raw);
-
-	/* Check square wave period averaged over some number of cycles */
-	start = ktime_get_ns();
-	state = 1; /* make sure the first read isn't a rising edge */
-	for (count = 0; count <= IOC4_CALIBRATE_END; count++) {
-		do { /* wait for a rising edge */
-			last_state = state;
-			int_out.raw = readl(&idd->idd_misc_regs->int_out.raw);
-			state = int_out.fields.int_out;
-		} while (last_state || !state);
-
-		/* discard the first few cycles */
-		if (count == IOC4_CALIBRATE_DISCARD)
-			start = ktime_get_ns();
-	}
-	end = ktime_get_ns();
-
-	/* Calculation rearranged to preserve intermediate precision.
-	 * Logically:
-	 * 1. "end - start" gives us the measurement period over all
-	 *    the square wave cycles.
-	 * 2. Divide by number of square wave cycles to get the period
-	 *    of a square wave cycle.
-	 * 3. Divide by 2*(int_out.fields.count+1), which is the formula
-	 *    by which the IOC4 generates the square wave, to get the
-	 *    period of an IOC4 INT_OUT count.
-	 */
-	period = (end - start) /
-		(IOC4_CALIBRATE_CYCLES * 2 * (IOC4_CALIBRATE_COUNT + 1));
-
-	/* Bounds check the result. */
-	if (period > IOC4_CALIBRATE_LOW_LIMIT ||
-	    period < IOC4_CALIBRATE_HIGH_LIMIT) {
-		printk(KERN_INFO
-		       "IOC4 %s: Clock calibration failed.  Assuming"
-		       "PCI clock is %d ns.\n",
-		       pci_name(idd->idd_pdev),
-		       IOC4_CALIBRATE_DEFAULT / IOC4_EXTINT_COUNT_DIVISOR);
-		period = IOC4_CALIBRATE_DEFAULT;
-	} else {
-		u64 ns = period;
-
-		do_div(ns, IOC4_EXTINT_COUNT_DIVISOR);
-		printk(KERN_DEBUG
-		       "IOC4 %s: PCI clock is %llu ns.\n",
-		       pci_name(idd->idd_pdev), (unsigned long long)ns);
-	}
-
-	/* Remember results.  We store the extint clock period rather
-	 * than the PCI clock period so that greater precision is
-	 * retained.  Divide by IOC4_EXTINT_COUNT_DIVISOR to get
-	 * PCI clock period.
-	 */
-	idd->count_period = period;
-}
-
-/* There are three variants of IOC4 cards: IO9, IO10, and PCI-RT.
- * Each brings out different combinations of IOC4 signals, thus.
- * the IOC4 subdrivers need to know to which we're attached.
- *
- * We look for the presence of a SCSI (IO9) or SATA (IO10) controller
- * on the same PCI bus at slot number 3 to differentiate IO9 from IO10.
- * If neither is present, it's a PCI-RT.
- */
-static unsigned int
-ioc4_variant(struct ioc4_driver_data *idd)
-{
-	struct pci_dev *pdev = NULL;
-	int found = 0;
-
-	/* IO9: Look for a QLogic ISP 12160 at the same bus and slot 3. */
-	do {
-		pdev = pci_get_device(PCI_VENDOR_ID_QLOGIC,
-				      PCI_DEVICE_ID_QLOGIC_ISP12160, pdev);
-		if (pdev &&
-		    idd->idd_pdev->bus->number == pdev->bus->number &&
-		    3 == PCI_SLOT(pdev->devfn))
-			found = 1;
-	} while (pdev && !found);
-	if (NULL != pdev) {
-		pci_dev_put(pdev);
-		return IOC4_VARIANT_IO9;
-	}
-
-	/* IO10: Look for a Vitesse VSC 7174 at the same bus and slot 3. */
-	pdev = NULL;
-	do {
-		pdev = pci_get_device(PCI_VENDOR_ID_VITESSE,
-				      PCI_DEVICE_ID_VITESSE_VSC7174, pdev);
-		if (pdev &&
-		    idd->idd_pdev->bus->number == pdev->bus->number &&
-		    3 == PCI_SLOT(pdev->devfn))
-			found = 1;
-	} while (pdev && !found);
-	if (NULL != pdev) {
-		pci_dev_put(pdev);
-		return IOC4_VARIANT_IO10;
-	}
-
-	/* PCI-RT: No SCSI/SATA controller will be present */
-	return IOC4_VARIANT_PCI_RT;
-}
-
-static void
-ioc4_load_modules(struct work_struct *work)
-{
-	request_module("sgiioc4");
-}
-
-static DECLARE_WORK(ioc4_load_modules_work, ioc4_load_modules);
-
-/* Adds a new instance of an IOC4 card */
-static int
-ioc4_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
-{
-	struct ioc4_driver_data *idd;
-	struct ioc4_submodule *is;
-	uint32_t pcmd;
-	int ret;
-
-	/* Enable IOC4 and take ownership of it */
-	if ((ret = pci_enable_device(pdev))) {
-		printk(KERN_WARNING
-		       "%s: Failed to enable IOC4 device for pci_dev %s.\n",
-		       __func__, pci_name(pdev));
-		goto out;
-	}
-	pci_set_master(pdev);
-
-	/* Set up per-IOC4 data */
-	idd = kmalloc(sizeof(struct ioc4_driver_data), GFP_KERNEL);
-	if (!idd) {
-		printk(KERN_WARNING
-		       "%s: Failed to allocate IOC4 data for pci_dev %s.\n",
-		       __func__, pci_name(pdev));
-		ret = -ENODEV;
-		goto out_idd;
-	}
-	idd->idd_pdev = pdev;
-	idd->idd_pci_id = pci_id;
-
-	/* Map IOC4 misc registers.  These are shared between subdevices
-	 * so the main IOC4 module manages them.
-	 */
-	idd->idd_bar0 = pci_resource_start(idd->idd_pdev, 0);
-	if (!idd->idd_bar0) {
-		printk(KERN_WARNING
-		       "%s: Unable to find IOC4 misc resource "
-		       "for pci_dev %s.\n",
-		       __func__, pci_name(idd->idd_pdev));
-		ret = -ENODEV;
-		goto out_pci;
-	}
-	if (!request_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs),
-			    "ioc4_misc")) {
-		printk(KERN_WARNING
-		       "%s: Unable to request IOC4 misc region "
-		       "for pci_dev %s.\n",
-		       __func__, pci_name(idd->idd_pdev));
-		ret = -ENODEV;
-		goto out_pci;
-	}
-	idd->idd_misc_regs = ioremap(idd->idd_bar0,
-				     sizeof(struct ioc4_misc_regs));
-	if (!idd->idd_misc_regs) {
-		printk(KERN_WARNING
-		       "%s: Unable to remap IOC4 misc region "
-		       "for pci_dev %s.\n",
-		       __func__, pci_name(idd->idd_pdev));
-		ret = -ENODEV;
-		goto out_misc_region;
-	}
-
-	/* Failsafe portion of per-IOC4 initialization */
-
-	/* Detect card variant */
-	idd->idd_variant = ioc4_variant(idd);
-	printk(KERN_INFO "IOC4 %s: %s card detected.\n", pci_name(pdev),
-	       idd->idd_variant == IOC4_VARIANT_IO9 ? "IO9" :
-	       idd->idd_variant == IOC4_VARIANT_PCI_RT ? "PCI-RT" :
-	       idd->idd_variant == IOC4_VARIANT_IO10 ? "IO10" : "unknown");
-
-	/* Initialize IOC4 */
-	pci_read_config_dword(idd->idd_pdev, PCI_COMMAND, &pcmd);
-	pci_write_config_dword(idd->idd_pdev, PCI_COMMAND,
-			       pcmd | PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
-
-	/* Determine PCI clock */
-	ioc4_clock_calibrate(idd);
-
-	/* Disable/clear all interrupts.  Need to do this here lest
-	 * one submodule request the shared IOC4 IRQ, but interrupt
-	 * is generated by a different subdevice.
-	 */
-	/* Disable */
-	writel(~0, &idd->idd_misc_regs->other_iec.raw);
-	writel(~0, &idd->idd_misc_regs->sio_iec);
-	/* Clear (i.e. acknowledge) */
-	writel(~0, &idd->idd_misc_regs->other_ir.raw);
-	writel(~0, &idd->idd_misc_regs->sio_ir);
-
-	/* Track PCI-device specific data */
-	idd->idd_serial_data = NULL;
-	pci_set_drvdata(idd->idd_pdev, idd);
-
-	mutex_lock(&ioc4_mutex);
-	list_add_tail(&idd->idd_list, &ioc4_devices);
-
-	/* Add this IOC4 to all submodules */
-	list_for_each_entry(is, &ioc4_submodules, is_list) {
-		if (is->is_probe && is->is_probe(idd)) {
-			printk(KERN_WARNING
-			       "%s: IOC4 submodule 0x%s probe failed "
-			       "for pci_dev %s.\n",
-			       __func__, module_name(is->is_owner),
-			       pci_name(idd->idd_pdev));
-		}
-	}
-	mutex_unlock(&ioc4_mutex);
-
-	/* Request sgiioc4 IDE driver on boards that bring that functionality
-	 * off of IOC4.  The root filesystem may be hosted on a drive connected
-	 * to IOC4, so we need to make sure the sgiioc4 driver is loaded as it
-	 * won't be picked up by modprobes due to the ioc4 module owning the
-	 * PCI device.
-	 */
-	if (idd->idd_variant != IOC4_VARIANT_PCI_RT) {
-		/* Request the module from a work procedure as the modprobe
-		 * goes out to a userland helper and that will hang if done
-		 * directly from ioc4_probe().
-		 */
-		printk(KERN_INFO "IOC4 loading sgiioc4 submodule\n");
-		schedule_work(&ioc4_load_modules_work);
-	}
-
-	return 0;
-
-out_misc_region:
-	release_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
-out_pci:
-	kfree(idd);
-out_idd:
-	pci_disable_device(pdev);
-out:
-	return ret;
-}
-
-/* Removes a particular instance of an IOC4 card. */
-static void
-ioc4_remove(struct pci_dev *pdev)
-{
-	struct ioc4_submodule *is;
-	struct ioc4_driver_data *idd;
-
-	idd = pci_get_drvdata(pdev);
-
-	/* Remove this IOC4 from all submodules */
-	mutex_lock(&ioc4_mutex);
-	list_for_each_entry(is, &ioc4_submodules, is_list) {
-		if (is->is_remove && is->is_remove(idd)) {
-			printk(KERN_WARNING
-			       "%s: IOC4 submodule 0x%s remove failed "
-			       "for pci_dev %s.\n",
-			       __func__, module_name(is->is_owner),
-			       pci_name(idd->idd_pdev));
-		}
-	}
-	mutex_unlock(&ioc4_mutex);
-
-	/* Release resources */
-	iounmap(idd->idd_misc_regs);
-	if (!idd->idd_bar0) {
-		printk(KERN_WARNING
-		       "%s: Unable to get IOC4 misc mapping for pci_dev %s. "
-		       "Device removal may be incomplete.\n",
-		       __func__, pci_name(idd->idd_pdev));
-	}
-	release_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
-
-	/* Disable IOC4 and relinquish */
-	pci_disable_device(pdev);
-
-	/* Remove and free driver data */
-	mutex_lock(&ioc4_mutex);
-	list_del(&idd->idd_list);
-	mutex_unlock(&ioc4_mutex);
-	kfree(idd);
-}
-
-static const struct pci_device_id ioc4_id_table[] = {
-	{PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC4, PCI_ANY_ID,
-	 PCI_ANY_ID, 0x0b4000, 0xFFFFFF},
-	{0}
-};
-
-static struct pci_driver ioc4_driver = {
-	.name = "IOC4",
-	.id_table = ioc4_id_table,
-	.probe = ioc4_probe,
-	.remove = ioc4_remove,
-};
-
-MODULE_DEVICE_TABLE(pci, ioc4_id_table);
-
-/*********************
- * Module management *
- *********************/
-
-/* Module load */
-static int __init
-ioc4_init(void)
-{
-	return pci_register_driver(&ioc4_driver);
-}
-
-/* Module unload */
-static void __exit
-ioc4_exit(void)
-{
-	/* Ensure ioc4_load_modules() has completed before exiting */
-	flush_work(&ioc4_load_modules_work);
-	pci_unregister_driver(&ioc4_driver);
-}
-
-module_init(ioc4_init);
-module_exit(ioc4_exit);
-
-MODULE_AUTHOR("Brent Casavant - Silicon Graphics, Inc. <bcasavan@sgi.com>");
-MODULE_DESCRIPTION("PCI driver master module for SGI IOC4 Base-IO Card");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(ioc4_register_submodule);
-EXPORT_SYMBOL(ioc4_unregister_submodule);
diff --git a/include/linux/ioc4.h b/include/linux/ioc4.h
deleted file mode 100644
index 51e2b9fb6372..000000000000
--- a/include/linux/ioc4.h
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-#ifndef _LINUX_IOC4_H
-#define _LINUX_IOC4_H
-
-#include <linux/interrupt.h>
-
-/***************
- * Definitions *
- ***************/
-
-/* Miscellaneous values inherent to hardware */
-
-#define IOC4_EXTINT_COUNT_DIVISOR 520	/* PCI clocks per COUNT tick */
-
-/***********************************
- * Structures needed by subdrivers *
- ***********************************/
-
-/* This structure fully describes the IOC4 miscellaneous registers which
- * appear at bar[0]+0x00000 through bar[0]+0x0005c.  The corresponding
- * PCI resource is managed by the main IOC4 driver because it contains
- * registers of interest to many different IOC4 subdrivers.
- */
-struct ioc4_misc_regs {
-	/* Miscellaneous IOC4 registers */
-	union ioc4_pci_err_addr_l {
-		uint32_t raw;
-		struct {
-			uint32_t valid:1;	/* Address captured */
-			uint32_t master_id:4;	/* Unit causing error
-						 * 0/1: Serial port 0 TX/RX
-						 * 2/3: Serial port 1 TX/RX
-						 * 4/5: Serial port 2 TX/RX
-						 * 6/7: Serial port 3 TX/RX
-						 * 8: ATA/ATAPI
-						 * 9-15: Undefined
-						 */
-			uint32_t mul_err:1;	/* Multiple errors occurred */
-			uint32_t addr:26;	/* Bits 31-6 of error addr */
-		} fields;
-	} pci_err_addr_l;
-	uint32_t pci_err_addr_h;	/* Bits 63-32 of error addr */
-	union ioc4_sio_int {
-		uint32_t raw;
-		struct {
-			uint8_t tx_mt:1;	/* TX ring buffer empty */
-			uint8_t rx_full:1;	/* RX ring buffer full */
-			uint8_t rx_high:1;	/* RX high-water exceeded */
-			uint8_t rx_timer:1;	/* RX timer has triggered */
-			uint8_t delta_dcd:1;	/* DELTA_DCD seen */
-			uint8_t delta_cts:1;	/* DELTA_CTS seen */
-			uint8_t intr_pass:1;	/* Interrupt pass-through */
-			uint8_t tx_explicit:1;	/* TX, MCW, or delay complete */
-		} fields[4];
-	} sio_ir;		/* Serial interrupt state */
-	union ioc4_other_int {
-		uint32_t raw;
-		struct {
-			uint32_t ata_int:1;	/* ATA port passthru */
-			uint32_t ata_memerr:1;	/* ATA halted by mem error */
-			uint32_t memerr:4;	/* Serial halted by mem err */
-			uint32_t kbd_int:1;	/* kbd/mouse intr asserted */
-			uint32_t reserved:16;	/* zero */
-			uint32_t rt_int:1;	/* INT_OUT section latch */
-			uint32_t gen_int:8;	/* Intr. from generic pins */
-		} fields;
-	} other_ir;		/* Other interrupt state */
-	union ioc4_sio_int sio_ies;	/* Serial interrupt enable set */
-	union ioc4_other_int other_ies;	/* Other interrupt enable set */
-	union ioc4_sio_int sio_iec;	/* Serial interrupt enable clear */
-	union ioc4_other_int other_iec;	/* Other interrupt enable clear */
-	union ioc4_sio_cr {
-		uint32_t raw;
-		struct {
-			uint32_t cmd_pulse:4;	/* Bytebus strobe width */
-			uint32_t arb_diag:3;	/* PCI bus requester */
-			uint32_t sio_diag_idle:1;	/* Active ser req? */
-			uint32_t ata_diag_idle:1;	/* Active ATA req? */
-			uint32_t ata_diag_active:1;	/* ATA req is winner */
-			uint32_t reserved:22;	/* zero */
-		} fields;
-	} sio_cr;
-	uint32_t unused1;
-	union ioc4_int_out {
-		uint32_t raw;
-		struct {
-			uint32_t count:16;	/* Period control */
-			uint32_t mode:3;	/* Output signal shape */
-			uint32_t reserved:11;	/* zero */
-			uint32_t diag:1;	/* Timebase control */
-			uint32_t int_out:1;	/* Current value */
-		} fields;
-	} int_out;		/* External interrupt output control */
-	uint32_t unused2;
-	union ioc4_gpcr {
-		uint32_t raw;
-		struct {
-			uint32_t dir:8;	/* Pin direction */
-			uint32_t edge:8;	/* Edge/level mode */
-			uint32_t reserved1:4;	/* zero */
-			uint32_t int_out_en:1;	/* INT_OUT enable */
-			uint32_t reserved2:11;	/* zero */
-		} fields;
-	} gpcr_s;		/* Generic PIO control set */
-	union ioc4_gpcr gpcr_c;	/* Generic PIO control clear */
-	union ioc4_gpdr {
-		uint32_t raw;
-		struct {
-			uint32_t gen_pin:8;	/* State of pins */
-			uint32_t reserved:24;
-		} fields;
-	} gpdr;			/* Generic PIO data */
-	uint32_t unused3;
-	union ioc4_gppr {
-		uint32_t raw;
-		struct {
-			uint32_t gen_pin:1;	/* Single pin state */
-			uint32_t reserved:31;
-		} fields;
-	} gppr[8];		/* Generic PIO pins */
-};
-
-/* Masks for GPCR DIR pins */
-#define IOC4_GPCR_DIR_0 0x01	/* External interrupt output */
-#define IOC4_GPCR_DIR_1 0x02	/* External interrupt input */
-#define IOC4_GPCR_DIR_2 0x04
-#define IOC4_GPCR_DIR_3 0x08	/* Keyboard/mouse presence */
-#define IOC4_GPCR_DIR_4 0x10	/* Ser. port 0 xcvr select (0=232, 1=422) */
-#define IOC4_GPCR_DIR_5 0x20	/* Ser. port 1 xcvr select (0=232, 1=422) */
-#define IOC4_GPCR_DIR_6 0x40	/* Ser. port 2 xcvr select (0=232, 1=422) */
-#define IOC4_GPCR_DIR_7 0x80	/* Ser. port 3 xcvr select (0=232, 1=422) */
-
-/* Masks for GPCR EDGE pins */
-#define IOC4_GPCR_EDGE_0 0x01
-#define IOC4_GPCR_EDGE_1 0x02	/* External interrupt input */
-#define IOC4_GPCR_EDGE_2 0x04
-#define IOC4_GPCR_EDGE_3 0x08
-#define IOC4_GPCR_EDGE_4 0x10
-#define IOC4_GPCR_EDGE_5 0x20
-#define IOC4_GPCR_EDGE_6 0x40
-#define IOC4_GPCR_EDGE_7 0x80
-
-#define IOC4_VARIANT_IO9	0x0900
-#define IOC4_VARIANT_PCI_RT	0x0901
-#define IOC4_VARIANT_IO10	0x1000
-
-/* One of these per IOC4 */
-struct ioc4_driver_data {
-	struct list_head idd_list;
-	unsigned long idd_bar0;
-	struct pci_dev *idd_pdev;
-	const struct pci_device_id *idd_pci_id;
-	struct ioc4_misc_regs __iomem *idd_misc_regs;
-	unsigned long count_period;
-	void *idd_serial_data;
-	unsigned int idd_variant;
-};
-
-/* One per submodule */
-struct ioc4_submodule {
-	struct list_head is_list;
-	char *is_name;
-	struct module *is_owner;
-	int (*is_probe) (struct ioc4_driver_data *);
-	int (*is_remove) (struct ioc4_driver_data *);
-};
-
-#define IOC4_NUM_CARDS		8	/* max cards per partition */
-
-/**********************************
- * Functions needed by submodules *
- **********************************/
-
-extern int ioc4_register_submodule(struct ioc4_submodule *);
-extern void ioc4_unregister_submodule(struct ioc4_submodule *);
-
-#endif				/* _LINUX_IOC4_H */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index c842735a4f45..85e2ca611d42 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1070,7 +1070,6 @@
 #define PCI_VENDOR_ID_SGI		0x10a9
 #define PCI_DEVICE_ID_SGI_IOC3		0x0003
 #define PCI_DEVICE_ID_SGI_LITHIUM	0x1002
-#define PCI_DEVICE_ID_SGI_IOC4		0x100a
 
 #define PCI_VENDOR_ID_WINBOND		0x10ad
 #define PCI_DEVICE_ID_WINBOND_82C105	0x0105
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 16/28] ia64: remove now unused machvec indirections
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (13 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 14/28] drivers: remove the SGI SN2 IOC4 " Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 17/28] ia64: remove the hpsim platform Christoph Hellwig
                   ` (11 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

With the SGI SN2 machvec removal most of the indirections are unused
now, so remove them.  This includes the entire removal of the mmio
read*/write* macros as the generic ones are identical to the
asm-generic/io.h version.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/include/asm/hw_irq.h       |  22 +--
 arch/ia64/include/asm/io.h           | 221 ++++--------------------
 arch/ia64/include/asm/machvec.h      | 241 ---------------------------
 arch/ia64/include/asm/machvec_init.h |  24 ---
 arch/ia64/include/asm/mmiowb.h       |  12 +-
 arch/ia64/include/asm/pci.h          |   6 +-
 arch/ia64/include/asm/switch_to.h    |   1 -
 arch/ia64/kernel/iosapic.c           |   5 +-
 arch/ia64/kernel/irq.c               |  12 --
 arch/ia64/kernel/irq_ia64.c          |   2 +-
 arch/ia64/kernel/machine_kexec.c     |   1 -
 arch/ia64/kernel/machvec.c           |   7 -
 arch/ia64/kernel/mca.c               |  10 +-
 arch/ia64/kernel/msi_ia64.c          |  21 +--
 arch/ia64/kernel/sal.c               |   2 +-
 arch/ia64/kernel/setup.c             |   1 -
 arch/ia64/kernel/smp.c               |   8 +-
 arch/ia64/kernel/smpboot.c           |   2 +-
 arch/ia64/kernel/time.c              |   2 -
 arch/ia64/lib/io.c                   | 114 -------------
 arch/ia64/mm/discontig.c             |   3 +-
 arch/ia64/mm/tlb.c                   |   6 +-
 arch/ia64/pci/pci.c                  |  13 +-
 23 files changed, 67 insertions(+), 669 deletions(-)

diff --git a/arch/ia64/include/asm/hw_irq.h b/arch/ia64/include/asm/hw_irq.h
index 5dd3c6485c3a..12808111a767 100644
--- a/arch/ia64/include/asm/hw_irq.h
+++ b/arch/ia64/include/asm/hw_irq.h
@@ -137,25 +137,9 @@ static inline void irq_complete_move(unsigned int irq) {}
 
 static inline void ia64_native_resend_irq(unsigned int vector)
 {
-	platform_send_ipi(smp_processor_id(), vector, IA64_IPI_DM_INT, 0);
+	ia64_send_ipi(smp_processor_id(), vector, IA64_IPI_DM_INT, 0);
 }
 
-/*
- * Default implementations for the irq-descriptor API:
- */
-#ifndef CONFIG_IA64_GENERIC
-static inline ia64_vector __ia64_irq_to_vector(int irq)
-{
-	return irq_cfg[irq].vector;
-}
-
-static inline unsigned int
-__ia64_local_vector_to_irq (ia64_vector vec)
-{
-	return __this_cpu_read(vector_irq[vec]);
-}
-#endif
-
 /*
  * Next follows the irq descriptor interface.  On IA-64, each CPU supports 256 interrupt
  * vectors.  On smaller systems, there is a one-to-one correspondence between interrupt
@@ -170,7 +154,7 @@ __ia64_local_vector_to_irq (ia64_vector vec)
 static inline ia64_vector
 irq_to_vector (int irq)
 {
-	return platform_irq_to_vector(irq);
+	return irq_cfg[irq].vector;
 }
 
 /*
@@ -181,7 +165,7 @@ irq_to_vector (int irq)
 static inline unsigned int
 local_vector_to_irq (ia64_vector vec)
 {
-	return platform_local_vector_to_irq(vec);
+	return __this_cpu_read(vector_irq[vec]);
 }
 
 #endif /* _ASM_IA64_HW_IRQ_H */
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index a511d62d447a..edd5c262d360 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -129,25 +129,6 @@ __ia64_mk_io_addr (unsigned long port)
 	return (void *) (space->mmio_base | offset);
 }
 
-#define __ia64_inb	___ia64_inb
-#define __ia64_inw	___ia64_inw
-#define __ia64_inl	___ia64_inl
-#define __ia64_outb	___ia64_outb
-#define __ia64_outw	___ia64_outw
-#define __ia64_outl	___ia64_outl
-#define __ia64_readb	___ia64_readb
-#define __ia64_readw	___ia64_readw
-#define __ia64_readl	___ia64_readl
-#define __ia64_readq	___ia64_readq
-#define __ia64_readb_relaxed	___ia64_readb
-#define __ia64_readw_relaxed	___ia64_readw
-#define __ia64_readl_relaxed	___ia64_readl
-#define __ia64_readq_relaxed	___ia64_readq
-#define __ia64_writeb	___ia64_writeb
-#define __ia64_writew	___ia64_writew
-#define __ia64_writel	___ia64_writel
-#define __ia64_writeq	___ia64_writeq
-
 /*
  * For the in/out routines, we need to do "mf.a" _after_ doing the I/O access to ensure
  * that the access has completed before executing other I/O accesses.  Since we're doing
@@ -156,8 +137,8 @@ __ia64_mk_io_addr (unsigned long port)
  * during optimization, which is why we use "volatile" pointers.
  */
 
-static inline unsigned int
-___ia64_inb (unsigned long port)
+#define inb inb
+static inline unsigned int inb(unsigned long port)
 {
 	volatile unsigned char *addr = __ia64_mk_io_addr(port);
 	unsigned char ret;
@@ -167,8 +148,8 @@ ___ia64_inb (unsigned long port)
 	return ret;
 }
 
-static inline unsigned int
-___ia64_inw (unsigned long port)
+#define inw inw
+static inline unsigned int inw(unsigned long port)
 {
 	volatile unsigned short *addr = __ia64_mk_io_addr(port);
 	unsigned short ret;
@@ -178,8 +159,8 @@ ___ia64_inw (unsigned long port)
 	return ret;
 }
 
-static inline unsigned int
-___ia64_inl (unsigned long port)
+#define inl inl
+static inline unsigned int inl(unsigned long port)
 {
 	volatile unsigned int *addr = __ia64_mk_io_addr(port);
 	unsigned int ret;
@@ -189,8 +170,8 @@ ___ia64_inl (unsigned long port)
 	return ret;
 }
 
-static inline void
-___ia64_outb (unsigned char val, unsigned long port)
+#define outb outb
+static inline void outb(unsigned char val, unsigned long port)
 {
 	volatile unsigned char *addr = __ia64_mk_io_addr(port);
 
@@ -198,8 +179,8 @@ ___ia64_outb (unsigned char val, unsigned long port)
 	__ia64_mf_a();
 }
 
-static inline void
-___ia64_outw (unsigned short val, unsigned long port)
+#define outw outw
+static inline void outw(unsigned short val, unsigned long port)
 {
 	volatile unsigned short *addr = __ia64_mk_io_addr(port);
 
@@ -207,8 +188,8 @@ ___ia64_outw (unsigned short val, unsigned long port)
 	__ia64_mf_a();
 }
 
-static inline void
-___ia64_outl (unsigned int val, unsigned long port)
+#define outl outl
+static inline void outl(unsigned int val, unsigned long port)
 {
 	volatile unsigned int *addr = __ia64_mk_io_addr(port);
 
@@ -216,199 +197,63 @@ ___ia64_outl (unsigned int val, unsigned long port)
 	__ia64_mf_a();
 }
 
-static inline void
-__insb (unsigned long port, void *dst, unsigned long count)
+#define insb insb
+static inline void insb(unsigned long port, void *dst, unsigned long count)
 {
 	unsigned char *dp = dst;
 
 	while (count--)
-		*dp++ = platform_inb(port);
+		*dp++ = inb(port);
 }
 
-static inline void
-__insw (unsigned long port, void *dst, unsigned long count)
+#define insw insw
+static inline void insw(unsigned long port, void *dst, unsigned long count)
 {
 	unsigned short *dp = dst;
 
 	while (count--)
-		put_unaligned(platform_inw(port), dp++);
+		put_unaligned(inw(port), dp++);
 }
 
-static inline void
-__insl (unsigned long port, void *dst, unsigned long count)
+#define insl insl
+static inline void insl(unsigned long port, void *dst, unsigned long count)
 {
 	unsigned int *dp = dst;
 
 	while (count--)
-		put_unaligned(platform_inl(port), dp++);
+		put_unaligned(inl(port), dp++);
 }
 
-static inline void
-__outsb (unsigned long port, const void *src, unsigned long count)
+#define outsb outsb
+static inline void outsb(unsigned long port, const void *src,
+		unsigned long count)
 {
 	const unsigned char *sp = src;
 
 	while (count--)
-		platform_outb(*sp++, port);
+		outb(*sp++, port);
 }
 
-static inline void
-__outsw (unsigned long port, const void *src, unsigned long count)
+#define outsw outsw
+static inline void outsw(unsigned long port, const void *src,
+		unsigned long count)
 {
 	const unsigned short *sp = src;
 
 	while (count--)
-		platform_outw(get_unaligned(sp++), port);
+		outw(get_unaligned(sp++), port);
 }
 
-static inline void
-__outsl (unsigned long port, const void *src, unsigned long count)
+#define outsl outsl
+static inline void outsl(unsigned long port, const void *src,
+		unsigned long count)
 {
 	const unsigned int *sp = src;
 
 	while (count--)
-		platform_outl(get_unaligned(sp++), port);
+		outl(get_unaligned(sp++), port);
 }
 
-/*
- * Unfortunately, some platforms are broken and do not follow the IA-64 architecture
- * specification regarding legacy I/O support.  Thus, we have to make these operations
- * platform dependent...
- */
-#define __inb		platform_inb
-#define __inw		platform_inw
-#define __inl		platform_inl
-#define __outb		platform_outb
-#define __outw		platform_outw
-#define __outl		platform_outl
-
-#define inb(p)		__inb(p)
-#define inw(p)		__inw(p)
-#define inl(p)		__inl(p)
-#define insb(p,d,c)	__insb(p,d,c)
-#define insw(p,d,c)	__insw(p,d,c)
-#define insl(p,d,c)	__insl(p,d,c)
-#define outb(v,p)	__outb(v,p)
-#define outw(v,p)	__outw(v,p)
-#define outl(v,p)	__outl(v,p)
-#define outsb(p,s,c)	__outsb(p,s,c)
-#define outsw(p,s,c)	__outsw(p,s,c)
-#define outsl(p,s,c)	__outsl(p,s,c)
-
-/*
- * The address passed to these functions are ioremap()ped already.
- *
- * We need these to be machine vectors since some platforms don't provide
- * DMA coherence via PIO reads (PCI drivers and the spec imply that this is
- * a good idea).  Writes are ok though for all existing ia64 platforms (and
- * hopefully it'll stay that way).
- */
-static inline unsigned char
-___ia64_readb (const volatile void __iomem *addr)
-{
-	return *(volatile unsigned char __force *)addr;
-}
-
-static inline unsigned short
-___ia64_readw (const volatile void __iomem *addr)
-{
-	return *(volatile unsigned short __force *)addr;
-}
-
-static inline unsigned int
-___ia64_readl (const volatile void __iomem *addr)
-{
-	return *(volatile unsigned int __force *) addr;
-}
-
-static inline unsigned long
-___ia64_readq (const volatile void __iomem *addr)
-{
-	return *(volatile unsigned long __force *) addr;
-}
-
-static inline void
-__writeb (unsigned char val, volatile void __iomem *addr)
-{
-	*(volatile unsigned char __force *) addr = val;
-}
-
-static inline void
-__writew (unsigned short val, volatile void __iomem *addr)
-{
-	*(volatile unsigned short __force *) addr = val;
-}
-
-static inline void
-__writel (unsigned int val, volatile void __iomem *addr)
-{
-	*(volatile unsigned int __force *) addr = val;
-}
-
-static inline void
-__writeq (unsigned long val, volatile void __iomem *addr)
-{
-	*(volatile unsigned long __force *) addr = val;
-}
-
-#define __readb		platform_readb
-#define __readw		platform_readw
-#define __readl		platform_readl
-#define __readq		platform_readq
-#define __readb_relaxed	platform_readb_relaxed
-#define __readw_relaxed	platform_readw_relaxed
-#define __readl_relaxed	platform_readl_relaxed
-#define __readq_relaxed	platform_readq_relaxed
-
-#define readb(a)	__readb((a))
-#define readw(a)	__readw((a))
-#define readl(a)	__readl((a))
-#define readq(a)	__readq((a))
-#define readb_relaxed(a)	__readb_relaxed((a))
-#define readw_relaxed(a)	__readw_relaxed((a))
-#define readl_relaxed(a)	__readl_relaxed((a))
-#define readq_relaxed(a)	__readq_relaxed((a))
-#define __raw_readb	readb
-#define __raw_readw	readw
-#define __raw_readl	readl
-#define __raw_readq	readq
-#define __raw_readb_relaxed	readb_relaxed
-#define __raw_readw_relaxed	readw_relaxed
-#define __raw_readl_relaxed	readl_relaxed
-#define __raw_readq_relaxed	readq_relaxed
-#define writeb(v,a)	__writeb((v), (a))
-#define writew(v,a)	__writew((v), (a))
-#define writel(v,a)	__writel((v), (a))
-#define writeq(v,a)	__writeq((v), (a))
-#define writeb_relaxed(v,a)	__writeb((v), (a))
-#define writew_relaxed(v,a)	__writew((v), (a))
-#define writel_relaxed(v,a)	__writel((v), (a))
-#define writeq_relaxed(v,a)	__writeq((v), (a))
-#define __raw_writeb	writeb
-#define __raw_writew	writew
-#define __raw_writel	writel
-#define __raw_writeq	writeq
-
-#ifndef inb_p
-# define inb_p		inb
-#endif
-#ifndef inw_p
-# define inw_p		inw
-#endif
-#ifndef inl_p
-# define inl_p		inl
-#endif
-
-#ifndef outb_p
-# define outb_p		outb
-#endif
-#ifndef outw_p
-# define outw_p		outw
-#endif
-#ifndef outl_p
-# define outl_p		outl
-#endif
-
 # ifdef __KERNEL__
 
 extern void __iomem * ioremap(unsigned long offset, unsigned long size);
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index d657f59d4fb3..f426a9829595 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -13,83 +13,19 @@
 
 #include <linux/types.h>
 
-/* forward declarations: */
 struct device;
-struct pt_regs;
-struct scatterlist;
-struct page;
-struct mm_struct;
-struct pci_bus;
-struct task_struct;
-struct pci_dev;
-struct msi_desc;
 
 typedef void ia64_mv_setup_t (char **);
-typedef void ia64_mv_cpu_init_t (void);
 typedef void ia64_mv_irq_init_t (void);
-typedef void ia64_mv_send_ipi_t (int, int, int, int);
-typedef void ia64_mv_timer_interrupt_t (int, void *);
-typedef void ia64_mv_global_tlb_purge_t (struct mm_struct *, unsigned long, unsigned long, unsigned long);
-typedef u8 ia64_mv_irq_to_vector (int);
-typedef unsigned int ia64_mv_local_vector_to_irq (u8);
-typedef char *ia64_mv_pci_get_legacy_mem_t (struct pci_bus *);
-typedef int ia64_mv_pci_legacy_read_t (struct pci_bus *, u16 port, u32 *val,
-				       u8 size);
-typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val,
-					u8 size);
-typedef void ia64_mv_migrate_t(struct task_struct * task);
-typedef void ia64_mv_pci_fixup_bus_t (struct pci_bus *);
-typedef void ia64_mv_kernel_launch_event_t(void);
-
-/* DMA-mapping interface: */
 typedef void ia64_mv_dma_init (void);
 typedef const struct dma_map_ops *ia64_mv_dma_get_ops(struct device *);
 
-/*
- * WARNING: The legacy I/O space is _architected_.  Platforms are
- * expected to follow this architected model (see Section 10.7 in the
- * IA-64 Architecture Software Developer's Manual).  Unfortunately,
- * some broken machines do not follow that model, which is why we have
- * to make the inX/outX operations part of the machine vector.
- * Platform designers should follow the architected model whenever
- * possible.
- */
-typedef unsigned int ia64_mv_inb_t (unsigned long);
-typedef unsigned int ia64_mv_inw_t (unsigned long);
-typedef unsigned int ia64_mv_inl_t (unsigned long);
-typedef void ia64_mv_outb_t (unsigned char, unsigned long);
-typedef void ia64_mv_outw_t (unsigned short, unsigned long);
-typedef void ia64_mv_outl_t (unsigned int, unsigned long);
-typedef void ia64_mv_mmiowb_t (void);
-typedef unsigned char ia64_mv_readb_t (const volatile void __iomem *);
-typedef unsigned short ia64_mv_readw_t (const volatile void __iomem *);
-typedef unsigned int ia64_mv_readl_t (const volatile void __iomem *);
-typedef unsigned long ia64_mv_readq_t (const volatile void __iomem *);
-typedef unsigned char ia64_mv_readb_relaxed_t (const volatile void __iomem *);
-typedef unsigned short ia64_mv_readw_relaxed_t (const volatile void __iomem *);
-typedef unsigned int ia64_mv_readl_relaxed_t (const volatile void __iomem *);
-typedef unsigned long ia64_mv_readq_relaxed_t (const volatile void __iomem *);
-
-typedef int ia64_mv_setup_msi_irq_t (struct pci_dev *pdev, struct msi_desc *);
-typedef void ia64_mv_teardown_msi_irq_t (unsigned int irq);
-
 static inline void
 machvec_noop (void)
 {
 }
 
-static inline void
-machvec_noop_task (struct task_struct *task)
-{
-}
-
-static inline void
-machvec_noop_bus (struct pci_bus *bus)
-{
-}
-
 extern void machvec_setup (char **);
-extern void machvec_timer_interrupt (int, void *);
 
 # if defined (CONFIG_IA64_HP_SIM)
 #  include <asm/machvec_hpsim.h>
@@ -110,38 +46,9 @@ extern void machvec_timer_interrupt (int, void *);
 # else
 #  define ia64_platform_name	ia64_mv.name
 #  define platform_setup	ia64_mv.setup
-#  define platform_cpu_init	ia64_mv.cpu_init
 #  define platform_irq_init	ia64_mv.irq_init
-#  define platform_send_ipi	ia64_mv.send_ipi
-#  define platform_timer_interrupt	ia64_mv.timer_interrupt
-#  define platform_global_tlb_purge	ia64_mv.global_tlb_purge
 #  define platform_dma_init		ia64_mv.dma_init
 #  define platform_dma_get_ops		ia64_mv.dma_get_ops
-#  define platform_irq_to_vector	ia64_mv.irq_to_vector
-#  define platform_local_vector_to_irq	ia64_mv.local_vector_to_irq
-#  define platform_pci_get_legacy_mem	ia64_mv.pci_get_legacy_mem
-#  define platform_pci_legacy_read	ia64_mv.pci_legacy_read
-#  define platform_pci_legacy_write	ia64_mv.pci_legacy_write
-#  define platform_inb		ia64_mv.inb
-#  define platform_inw		ia64_mv.inw
-#  define platform_inl		ia64_mv.inl
-#  define platform_outb		ia64_mv.outb
-#  define platform_outw		ia64_mv.outw
-#  define platform_outl		ia64_mv.outl
-#  define platform_mmiowb	ia64_mv.mmiowb
-#  define platform_readb        ia64_mv.readb
-#  define platform_readw        ia64_mv.readw
-#  define platform_readl        ia64_mv.readl
-#  define platform_readq        ia64_mv.readq
-#  define platform_readb_relaxed        ia64_mv.readb_relaxed
-#  define platform_readw_relaxed        ia64_mv.readw_relaxed
-#  define platform_readl_relaxed        ia64_mv.readl_relaxed
-#  define platform_readq_relaxed        ia64_mv.readq_relaxed
-#  define platform_migrate		ia64_mv.migrate
-#  define platform_setup_msi_irq	ia64_mv.setup_msi_irq
-#  define platform_teardown_msi_irq	ia64_mv.teardown_msi_irq
-#  define platform_pci_fixup_bus	ia64_mv.pci_fixup_bus
-#  define platform_kernel_launch_event	ia64_mv.kernel_launch_event
 # endif
 
 /* __attribute__((__aligned__(16))) is required to make size of the
@@ -152,76 +59,18 @@ extern void machvec_timer_interrupt (int, void *);
 struct ia64_machine_vector {
 	const char *name;
 	ia64_mv_setup_t *setup;
-	ia64_mv_cpu_init_t *cpu_init;
 	ia64_mv_irq_init_t *irq_init;
-	ia64_mv_send_ipi_t *send_ipi;
-	ia64_mv_timer_interrupt_t *timer_interrupt;
-	ia64_mv_global_tlb_purge_t *global_tlb_purge;
 	ia64_mv_dma_init *dma_init;
 	ia64_mv_dma_get_ops *dma_get_ops;
-	ia64_mv_irq_to_vector *irq_to_vector;
-	ia64_mv_local_vector_to_irq *local_vector_to_irq;
-	ia64_mv_pci_get_legacy_mem_t *pci_get_legacy_mem;
-	ia64_mv_pci_legacy_read_t *pci_legacy_read;
-	ia64_mv_pci_legacy_write_t *pci_legacy_write;
-	ia64_mv_inb_t *inb;
-	ia64_mv_inw_t *inw;
-	ia64_mv_inl_t *inl;
-	ia64_mv_outb_t *outb;
-	ia64_mv_outw_t *outw;
-	ia64_mv_outl_t *outl;
-	ia64_mv_mmiowb_t *mmiowb;
-	ia64_mv_readb_t *readb;
-	ia64_mv_readw_t *readw;
-	ia64_mv_readl_t *readl;
-	ia64_mv_readq_t *readq;
-	ia64_mv_readb_relaxed_t *readb_relaxed;
-	ia64_mv_readw_relaxed_t *readw_relaxed;
-	ia64_mv_readl_relaxed_t *readl_relaxed;
-	ia64_mv_readq_relaxed_t *readq_relaxed;
-	ia64_mv_migrate_t *migrate;
-	ia64_mv_setup_msi_irq_t *setup_msi_irq;
-	ia64_mv_teardown_msi_irq_t *teardown_msi_irq;
-	ia64_mv_pci_fixup_bus_t *pci_fixup_bus;
-	ia64_mv_kernel_launch_event_t *kernel_launch_event;
 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
 
 #define MACHVEC_INIT(name)			\
 {						\
 	#name,					\
 	platform_setup,				\
-	platform_cpu_init,			\
 	platform_irq_init,			\
-	platform_send_ipi,			\
-	platform_timer_interrupt,		\
-	platform_global_tlb_purge,		\
 	platform_dma_init,			\
 	platform_dma_get_ops,			\
-	platform_irq_to_vector,			\
-	platform_local_vector_to_irq,		\
-	platform_pci_get_legacy_mem,		\
-	platform_pci_legacy_read,		\
-	platform_pci_legacy_write,		\
-	platform_inb,				\
-	platform_inw,				\
-	platform_inl,				\
-	platform_outb,				\
-	platform_outw,				\
-	platform_outl,				\
-	platform_mmiowb,			\
-	platform_readb,				\
-	platform_readw,				\
-	platform_readl,				\
-	platform_readq,				\
-	platform_readb_relaxed,			\
-	platform_readw_relaxed,			\
-	platform_readl_relaxed,			\
-	platform_readq_relaxed,			\
-	platform_migrate,			\
-	platform_setup_msi_irq,			\
-	platform_teardown_msi_irq,		\
-	platform_pci_fixup_bus,			\
-	platform_kernel_launch_event            \
 }
 
 extern struct ia64_machine_vector ia64_mv;
@@ -242,104 +91,14 @@ extern const struct dma_map_ops *dma_get_ops(struct device *);
 #ifndef platform_setup
 # define platform_setup			machvec_setup
 #endif
-#ifndef platform_cpu_init
-# define platform_cpu_init		machvec_noop
-#endif
 #ifndef platform_irq_init
 # define platform_irq_init		machvec_noop
 #endif
-
-#ifndef platform_send_ipi
-# define platform_send_ipi		ia64_send_ipi	/* default to architected version */
-#endif
-#ifndef platform_timer_interrupt
-# define platform_timer_interrupt 	machvec_timer_interrupt
-#endif
-#ifndef platform_global_tlb_purge
-# define platform_global_tlb_purge	ia64_global_tlb_purge /* default to architected version */
-#endif
-#ifndef platform_kernel_launch_event
-# define platform_kernel_launch_event	machvec_noop
-#endif
 #ifndef platform_dma_init
 # define platform_dma_init		swiotlb_dma_init
 #endif
 #ifndef platform_dma_get_ops
 # define platform_dma_get_ops		dma_get_ops
 #endif
-#ifndef platform_irq_to_vector
-# define platform_irq_to_vector		__ia64_irq_to_vector
-#endif
-#ifndef platform_local_vector_to_irq
-# define platform_local_vector_to_irq	__ia64_local_vector_to_irq
-#endif
-#ifndef platform_pci_get_legacy_mem
-# define platform_pci_get_legacy_mem	ia64_pci_get_legacy_mem
-#endif
-#ifndef platform_pci_legacy_read
-# define platform_pci_legacy_read	ia64_pci_legacy_read
-extern int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
-#endif
-#ifndef platform_pci_legacy_write
-# define platform_pci_legacy_write	ia64_pci_legacy_write
-extern int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
-#endif
-#ifndef platform_inb
-# define platform_inb		__ia64_inb
-#endif
-#ifndef platform_inw
-# define platform_inw		__ia64_inw
-#endif
-#ifndef platform_inl
-# define platform_inl		__ia64_inl
-#endif
-#ifndef platform_outb
-# define platform_outb		__ia64_outb
-#endif
-#ifndef platform_outw
-# define platform_outw		__ia64_outw
-#endif
-#ifndef platform_outl
-# define platform_outl		__ia64_outl
-#endif
-#ifndef platform_mmiowb
-# define platform_mmiowb	__ia64_mmiowb
-#endif
-#ifndef platform_readb
-# define platform_readb		__ia64_readb
-#endif
-#ifndef platform_readw
-# define platform_readw		__ia64_readw
-#endif
-#ifndef platform_readl
-# define platform_readl		__ia64_readl
-#endif
-#ifndef platform_readq
-# define platform_readq		__ia64_readq
-#endif
-#ifndef platform_readb_relaxed
-# define platform_readb_relaxed	__ia64_readb_relaxed
-#endif
-#ifndef platform_readw_relaxed
-# define platform_readw_relaxed	__ia64_readw_relaxed
-#endif
-#ifndef platform_readl_relaxed
-# define platform_readl_relaxed	__ia64_readl_relaxed
-#endif
-#ifndef platform_readq_relaxed
-# define platform_readq_relaxed	__ia64_readq_relaxed
-#endif
-#ifndef platform_migrate
-# define platform_migrate machvec_noop_task
-#endif
-#ifndef platform_setup_msi_irq
-# define platform_setup_msi_irq		((ia64_mv_setup_msi_irq_t*)NULL)
-#endif
-#ifndef platform_teardown_msi_irq
-# define platform_teardown_msi_irq	((ia64_mv_teardown_msi_irq_t*)NULL)
-#endif
-#ifndef platform_pci_fixup_bus
-# define platform_pci_fixup_bus	machvec_noop_bus
-#endif
 
 #endif /* _ASM_IA64_MACHVEC_H */
diff --git a/arch/ia64/include/asm/machvec_init.h b/arch/ia64/include/asm/machvec_init.h
index 2aafb69a3787..7a82e3ea0aff 100644
--- a/arch/ia64/include/asm/machvec_init.h
+++ b/arch/ia64/include/asm/machvec_init.h
@@ -2,30 +2,6 @@
 #include <asm/iommu.h>
 #include <asm/machvec.h>
 
-extern ia64_mv_send_ipi_t ia64_send_ipi;
-extern ia64_mv_global_tlb_purge_t ia64_global_tlb_purge;
-extern ia64_mv_irq_to_vector __ia64_irq_to_vector;
-extern ia64_mv_local_vector_to_irq __ia64_local_vector_to_irq;
-extern ia64_mv_pci_get_legacy_mem_t ia64_pci_get_legacy_mem;
-extern ia64_mv_pci_legacy_read_t ia64_pci_legacy_read;
-extern ia64_mv_pci_legacy_write_t ia64_pci_legacy_write;
-
-extern ia64_mv_inb_t __ia64_inb;
-extern ia64_mv_inw_t __ia64_inw;
-extern ia64_mv_inl_t __ia64_inl;
-extern ia64_mv_outb_t __ia64_outb;
-extern ia64_mv_outw_t __ia64_outw;
-extern ia64_mv_outl_t __ia64_outl;
-extern ia64_mv_mmiowb_t __ia64_mmiowb;
-extern ia64_mv_readb_t __ia64_readb;
-extern ia64_mv_readw_t __ia64_readw;
-extern ia64_mv_readl_t __ia64_readl;
-extern ia64_mv_readq_t __ia64_readq;
-extern ia64_mv_readb_t __ia64_readb_relaxed;
-extern ia64_mv_readw_t __ia64_readw_relaxed;
-extern ia64_mv_readl_t __ia64_readl_relaxed;
-extern ia64_mv_readq_t __ia64_readq_relaxed;
-
 #define MACHVEC_HELPER(name)									\
  struct ia64_machine_vector machvec_##name __attribute__ ((unused, __section__ (".machvec")))	\
 	= MACHVEC_INIT(name);
diff --git a/arch/ia64/include/asm/mmiowb.h b/arch/ia64/include/asm/mmiowb.h
index 297b85ac84a0..d67aab4ea3b4 100644
--- a/arch/ia64/include/asm/mmiowb.h
+++ b/arch/ia64/include/asm/mmiowb.h
@@ -3,22 +3,14 @@
 #ifndef _ASM_IA64_MMIOWB_H
 #define _ASM_IA64_MMIOWB_H
 
-#include <asm/machvec.h>
-
 /**
- * ___ia64_mmiowb - I/O write barrier
+ * mmiowb - I/O write barrier
  *
  * Ensure ordering of I/O space writes.  This will make sure that writes
  * following the barrier will arrive after all previous writes.  For most
  * ia64 platforms, this is a simple 'mf.a' instruction.
  */
-static inline void ___ia64_mmiowb(void)
-{
-	ia64_mfa();
-}
-
-#define __ia64_mmiowb	___ia64_mmiowb
-#define mmiowb()	platform_mmiowb()
+#define mmiowb()	ia64_mfa()
 
 #include <asm-generic/mmiowb.h>
 
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index 780e8744ba85..ef91b780a3f2 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -39,9 +39,9 @@ extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
 				      struct vm_area_struct *vma,
 				      enum pci_mmap_state mmap_state);
 
-#define pci_get_legacy_mem platform_pci_get_legacy_mem
-#define pci_legacy_read platform_pci_legacy_read
-#define pci_legacy_write platform_pci_legacy_write
+char *pci_get_legacy_mem(struct pci_bus *bus);
+int pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size);
+int pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size);
 
 struct pci_controller {
 	struct acpi_device *companion;
diff --git a/arch/ia64/include/asm/switch_to.h b/arch/ia64/include/asm/switch_to.h
index b10f31ec522c..9011e90a6b97 100644
--- a/arch/ia64/include/asm/switch_to.h
+++ b/arch/ia64/include/asm/switch_to.h
@@ -69,7 +69,6 @@ extern void ia64_load_extra (struct task_struct *task);
 	if (unlikely((current->thread.flags & IA64_THREAD_MIGRATION) &&	       \
 		     (task_cpu(current) !=				       \
 		      		      task_thread_info(current)->last_cpu))) { \
-		platform_migrate(current);				       \
 		task_thread_info(current)->last_cpu = task_cpu(current);       \
 	}								       \
 } while (0)
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index fe6e4946672e..9e49fd006859 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -67,10 +67,7 @@
  *     used as architecture-independent interrupt handling mechanism in Linux.
  *     As an IRQ is a number, we have to have
  *     IA-64 interrupt vector number <-> IRQ number mapping.  On smaller
- *     systems, we use one-to-one mapping between IA-64 vector and IRQ.  A
- *     platform can implement platform_irq_to_vector(irq) and
- *     platform_local_vector_to_irq(vector) APIs to differentiate the mapping.
- *     Please see also arch/ia64/include/asm/hw_irq.h for those APIs.
+ *     systems, we use one-to-one mapping between IA-64 vector and IRQ.
  *
  * To sum up, there are three levels of mappings involved:
  *
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index 6d17d26caf98..0a8e5e585edc 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -35,18 +35,6 @@ void ack_bad_irq(unsigned int irq)
 	printk(KERN_ERR "Unexpected irq vector 0x%x on CPU %u!\n", irq, smp_processor_id());
 }
 
-#ifdef CONFIG_IA64_GENERIC
-ia64_vector __ia64_irq_to_vector(int irq)
-{
-	return irq_cfg[irq].vector;
-}
-
-unsigned int __ia64_local_vector_to_irq (ia64_vector vec)
-{
-	return __this_cpu_read(vector_irq[vec]);
-}
-#endif
-
 /*
  * Interrupt statistics:
  */
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index ab87d6c25b15..1c81ec752b04 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -314,7 +314,7 @@ void irq_complete_move(unsigned irq)
 	cpumask_and(&cleanup_mask, &cfg->old_domain, cpu_online_mask);
 	cfg->move_cleanup_count = cpumask_weight(&cleanup_mask);
 	for_each_cpu(i, &cleanup_mask)
-		platform_send_ipi(i, IA64_IRQ_MOVE_VECTOR, IA64_IPI_DM_INT, 0);
+		ia64_send_ipi(i, IA64_IRQ_MOVE_VECTOR, IA64_IPI_DM_INT, 0);
 	cfg->move_in_progress = 0;
 }
 
diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c
index 3b1dd5496d08..efc9b568401c 100644
--- a/arch/ia64/kernel/machine_kexec.c
+++ b/arch/ia64/kernel/machine_kexec.c
@@ -127,7 +127,6 @@ static void ia64_machine_kexec(struct unw_frame_info *info, void *arg)
 	ia64_srlz_d();
 	while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR)
 		ia64_eoi();
-	platform_kernel_launch_event();
 	rnk = (relocate_new_kernel_t)&code_addr;
 	(*rnk)(image->head, image->start, ia64_boot_param,
 		     GRANULEROUNDDOWN((unsigned long) pal_addr));
diff --git a/arch/ia64/kernel/machvec.c b/arch/ia64/kernel/machvec.c
index ebd82535f51b..3db3be7aaae5 100644
--- a/arch/ia64/kernel/machvec.c
+++ b/arch/ia64/kernel/machvec.c
@@ -11,7 +11,6 @@
 #include <asm/page.h>
 
 struct ia64_machine_vector ia64_mv = {
-	.mmiowb	= ___ia64_mmiowb
 };
 EXPORT_SYMBOL(ia64_mv);
 
@@ -69,9 +68,3 @@ machvec_setup (char **arg)
 {
 }
 EXPORT_SYMBOL(machvec_setup);
-
-void
-machvec_timer_interrupt (int irq, void *dev_id)
-{
-}
-EXPORT_SYMBOL(machvec_timer_interrupt);
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 79190d877fa7..f72b05fe918b 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -744,7 +744,7 @@ ia64_mca_cmc_vector_enable_keventd(struct work_struct *unused)
 static void
 ia64_mca_wakeup(int cpu)
 {
-	platform_send_ipi(cpu, IA64_MCA_WAKEUP_VECTOR, IA64_IPI_DM_INT, 0);
+	ia64_send_ipi(cpu, IA64_MCA_WAKEUP_VECTOR, IA64_IPI_DM_INT, 0);
 }
 
 /*
@@ -1490,7 +1490,7 @@ ia64_mca_cmc_int_caller(int cmc_irq, void *arg)
 	cpuid = cpumask_next(cpuid+1, cpu_online_mask);
 
 	if (cpuid < nr_cpu_ids) {
-		platform_send_ipi(cpuid, IA64_CMCP_VECTOR, IA64_IPI_DM_INT, 0);
+		ia64_send_ipi(cpuid, IA64_CMCP_VECTOR, IA64_IPI_DM_INT, 0);
 	} else {
 		/* If no log record, switch out of polling mode */
 		if (start_count == IA64_LOG_COUNT(SAL_INFO_TYPE_CMC)) {
@@ -1523,7 +1523,7 @@ static void
 ia64_mca_cmc_poll (struct timer_list *unused)
 {
 	/* Trigger a CMC interrupt cascade  */
-	platform_send_ipi(cpumask_first(cpu_online_mask), IA64_CMCP_VECTOR,
+	ia64_send_ipi(cpumask_first(cpu_online_mask), IA64_CMCP_VECTOR,
 							IA64_IPI_DM_INT, 0);
 }
 
@@ -1560,7 +1560,7 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg)
 	cpuid = cpumask_next(cpuid+1, cpu_online_mask);
 
 	if (cpuid < NR_CPUS) {
-		platform_send_ipi(cpuid, IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0);
+		ia64_send_ipi(cpuid, IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0);
 	} else {
 		/*
 		 * If a log was recorded, increase our polling frequency,
@@ -1600,7 +1600,7 @@ static void
 ia64_mca_cpe_poll (struct timer_list *unused)
 {
 	/* Trigger a CPE interrupt cascade  */
-	platform_send_ipi(cpumask_first(cpu_online_mask), IA64_CPEP_VECTOR,
+	ia64_send_ipi(cpumask_first(cpu_online_mask), IA64_CPEP_VECTOR,
 							IA64_IPI_DM_INT, 0);
 }
 
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
index 519d9432f407..df5c28f252e3 100644
--- a/arch/ia64/kernel/msi_ia64.c
+++ b/arch/ia64/kernel/msi_ia64.c
@@ -43,7 +43,7 @@ static int ia64_set_msi_irq_affinity(struct irq_data *idata,
 }
 #endif /* CONFIG_SMP */
 
-int ia64_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
+int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
 {
 	struct msi_msg	msg;
 	unsigned long	dest_phys_id;
@@ -77,7 +77,7 @@ int ia64_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
 	return 0;
 }
 
-void ia64_teardown_msi_irq(unsigned int irq)
+void arch_teardown_msi_irq(unsigned int irq)
 {
 	destroy_irq(irq);
 }
@@ -111,23 +111,6 @@ static struct irq_chip ia64_msi_chip = {
 	.irq_retrigger		= ia64_msi_retrigger_irq,
 };
 
-
-int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
-{
-	if (platform_setup_msi_irq)
-		return platform_setup_msi_irq(pdev, desc);
-
-	return ia64_setup_msi_irq(pdev, desc);
-}
-
-void arch_teardown_msi_irq(unsigned int irq)
-{
-	if (platform_teardown_msi_irq)
-		return platform_teardown_msi_irq(irq);
-
-	return ia64_teardown_msi_irq(irq);
-}
-
 #ifdef CONFIG_INTEL_IOMMU
 #ifdef CONFIG_SMP
 static int dmar_msi_set_affinity(struct irq_data *data,
diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c
index 17085a8078fe..c455ece977ad 100644
--- a/arch/ia64/kernel/sal.c
+++ b/arch/ia64/kernel/sal.c
@@ -249,7 +249,7 @@ check_sal_cache_flush (void)
 	 * Send ourselves a timer interrupt, wait until it's reported, and see
 	 * if SAL_CACHE_FLUSH drops it.
 	 */
-	platform_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
+	ia64_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
 
 	while (!ia64_get_irr(IA64_TIMER_VECTOR))
 		cpu_relax();
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 78d0d22dd17e..4dc74500eac5 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -1039,7 +1039,6 @@ cpu_init (void)
 		ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8);
 		max_num_phys_stacked = num_phys_stacked;
 	}
-	platform_cpu_init();
 }
 
 void __init
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 133b63355814..4825b0b41d49 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -146,7 +146,7 @@ static inline void
 send_IPI_single (int dest_cpu, int op)
 {
 	set_bit(op, &per_cpu(ipi_operation, dest_cpu));
-	platform_send_ipi(dest_cpu, IA64_IPI_VECTOR, IA64_IPI_DM_INT, 0);
+	ia64_send_ipi(dest_cpu, IA64_IPI_VECTOR, IA64_IPI_DM_INT, 0);
 }
 
 /*
@@ -213,7 +213,7 @@ kdump_smp_send_init(void)
 	for_each_online_cpu(cpu) {
 		if (cpu != self_cpu) {
 			if(kdump_status[cpu] == 0)
-				platform_send_ipi(cpu, 0, IA64_IPI_DM_INIT, 0);
+				ia64_send_ipi(cpu, 0, IA64_IPI_DM_INIT, 0);
 		}
 	}
 }
@@ -224,7 +224,7 @@ kdump_smp_send_init(void)
 void
 smp_send_reschedule (int cpu)
 {
-	platform_send_ipi(cpu, IA64_IPI_RESCHEDULE, IA64_IPI_DM_INT, 0);
+	ia64_send_ipi(cpu, IA64_IPI_RESCHEDULE, IA64_IPI_DM_INT, 0);
 }
 EXPORT_SYMBOL_GPL(smp_send_reschedule);
 
@@ -234,7 +234,7 @@ EXPORT_SYMBOL_GPL(smp_send_reschedule);
 static void
 smp_send_local_flush_tlb (int cpu)
 {
-	platform_send_ipi(cpu, IA64_IPI_LOCAL_TLB_FLUSH, IA64_IPI_DM_INT, 0);
+	ia64_send_ipi(cpu, IA64_IPI_LOCAL_TLB_FLUSH, IA64_IPI_DM_INT, 0);
 }
 
 void
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index df56f739dd11..f7058659526c 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -467,7 +467,7 @@ do_boot_cpu (int sapicid, int cpu, struct task_struct *idle)
 	Dprintk("Sending wakeup vector %lu to AP 0x%x/0x%x.\n", ap_wakeup_vector, cpu, sapicid);
 
 	set_brendez_area(cpu);
-	platform_send_ipi(cpu, ap_wakeup_vector, IA64_IPI_DM_INT, 0);
+	ia64_send_ipi(cpu, ap_wakeup_vector, IA64_IPI_DM_INT, 0);
 
 	/*
 	 * Wait 10s total for the AP to start
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 4ecd81b0e8ec..d9ad93a6d825 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -167,8 +167,6 @@ timer_interrupt (int irq, void *dev_id)
 		return IRQ_HANDLED;
 	}
 
-	platform_timer_interrupt(irq, dev_id);
-
 	new_itm = local_cpu_data->itm_next;
 
 	if (!time_after(ia64_get_itc(), new_itm))
diff --git a/arch/ia64/lib/io.c b/arch/ia64/lib/io.c
index d107eaf3790d..c3e02462ed16 100644
--- a/arch/ia64/lib/io.c
+++ b/arch/ia64/lib/io.c
@@ -49,117 +49,3 @@ void memset_io(volatile void __iomem *dst, int c, long count)
 	}
 }
 EXPORT_SYMBOL(memset_io);
-
-#ifdef CONFIG_IA64_GENERIC
-
-#undef __ia64_inb
-#undef __ia64_inw
-#undef __ia64_inl
-#undef __ia64_outb
-#undef __ia64_outw
-#undef __ia64_outl
-#undef __ia64_readb
-#undef __ia64_readw
-#undef __ia64_readl
-#undef __ia64_readq
-#undef __ia64_readb_relaxed
-#undef __ia64_readw_relaxed
-#undef __ia64_readl_relaxed
-#undef __ia64_readq_relaxed
-#undef __ia64_writeb
-#undef __ia64_writew
-#undef __ia64_writel
-#undef __ia64_writeq
-#undef __ia64_mmiowb
-
-unsigned int
-__ia64_inb (unsigned long port)
-{
-	return ___ia64_inb(port);
-}
-
-unsigned int
-__ia64_inw (unsigned long port)
-{
-	return ___ia64_inw(port);
-}
-
-unsigned int
-__ia64_inl (unsigned long port)
-{
-	return ___ia64_inl(port);
-}
-
-void
-__ia64_outb (unsigned char val, unsigned long port)
-{
-	___ia64_outb(val, port);
-}
-
-void
-__ia64_outw (unsigned short val, unsigned long port)
-{
-	___ia64_outw(val, port);
-}
-
-void
-__ia64_outl (unsigned int val, unsigned long port)
-{
-	___ia64_outl(val, port);
-}
-
-unsigned char
-__ia64_readb (void __iomem *addr)
-{
-	return ___ia64_readb (addr);
-}
-
-unsigned short
-__ia64_readw (void __iomem *addr)
-{
-	return ___ia64_readw (addr);
-}
-
-unsigned int
-__ia64_readl (void __iomem *addr)
-{
-	return ___ia64_readl (addr);
-}
-
-unsigned long
-__ia64_readq (void __iomem *addr)
-{
-	return ___ia64_readq (addr);
-}
-
-unsigned char
-__ia64_readb_relaxed (void __iomem *addr)
-{
-	return ___ia64_readb (addr);
-}
-
-unsigned short
-__ia64_readw_relaxed (void __iomem *addr)
-{
-	return ___ia64_readw (addr);
-}
-
-unsigned int
-__ia64_readl_relaxed (void __iomem *addr)
-{
-	return ___ia64_readl (addr);
-}
-
-unsigned long
-__ia64_readq_relaxed (void __iomem *addr)
-{
-	return ___ia64_readq (addr);
-}
-
-void
-__ia64_mmiowb(void)
-{
-	___ia64_mmiowb();
-}
-
-#endif /* CONFIG_IA64_GENERIC */
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 05490dd073e6..921f3efe3538 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -396,8 +396,7 @@ static void __meminit scatter_node_data(void)
  *
  * Each node's per-node area has a copy of the global pg_data_t list, so
  * we copy that to each node here, as well as setting the per-cpu pointer
- * to the local node data structure.  The active_cpus field of the per-node
- * structure gets setup by the platform_cpu_init() function later.
+ * to the local node data structure.
  */
 static void __init initialize_pernode_data(void)
 {
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 0714df1b7854..72cc568bc841 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -245,7 +245,8 @@ setup_ptcg_sem(int max_purges, int nptcg_from)
 	spinaphore_init(&ptcg_sem, max_purges);
 }
 
-void
+#ifdef CONFIG_SMP
+static void
 ia64_global_tlb_purge (struct mm_struct *mm, unsigned long start,
 		       unsigned long end, unsigned long nbits)
 {
@@ -282,6 +283,7 @@ ia64_global_tlb_purge (struct mm_struct *mm, unsigned long start,
                 activate_context(active_mm);
         }
 }
+#endif /* CONFIG_SMP */
 
 void
 local_flush_tlb_all (void)
@@ -332,7 +334,7 @@ __flush_tlb_range (struct vm_area_struct *vma, unsigned long start,
 	preempt_disable();
 #ifdef CONFIG_SMP
 	if (mm != current->active_mm || cpumask_weight(mm_cpumask(mm)) != 1) {
-		platform_global_tlb_purge(mm, start, end, nbits);
+		ia64_global_tlb_purge(mm, start, end, nbits);
 		preempt_enable();
 		return;
 	}
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 165e561dc81a..89c9f36dc94d 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -372,7 +372,6 @@ void pcibios_fixup_bus(struct pci_bus *b)
 	}
 	list_for_each_entry(dev, &b->devices, bus_list)
 		pcibios_fixup_device_resources(dev);
-	platform_pci_fixup_bus(b);
 }
 
 void pcibios_add_bus(struct pci_bus *bus)
@@ -413,7 +412,7 @@ pcibios_disable_device (struct pci_dev *dev)
 }
 
 /**
- * ia64_pci_get_legacy_mem - generic legacy mem routine
+ * pci_get_legacy_mem - generic legacy mem routine
  * @bus: bus to get legacy memory base address for
  *
  * Find the base of legacy memory for @bus.  This is typically the first
@@ -424,7 +423,7 @@ pcibios_disable_device (struct pci_dev *dev)
  * This is the ia64 generic version of this routine.  Other platforms
  * are free to override it with a machine vector.
  */
-char *ia64_pci_get_legacy_mem(struct pci_bus *bus)
+char *pci_get_legacy_mem(struct pci_bus *bus)
 {
 	return (char *)__IA64_UNCACHED_OFFSET;
 }
@@ -473,7 +472,7 @@ pci_mmap_legacy_page_range(struct pci_bus *bus, struct vm_area_struct *vma,
 }
 
 /**
- * ia64_pci_legacy_read - read from legacy I/O space
+ * pci_legacy_read - read from legacy I/O space
  * @bus: bus to read
  * @port: legacy port value
  * @val: caller allocated storage for returned value
@@ -485,7 +484,7 @@ pci_mmap_legacy_page_range(struct pci_bus *bus, struct vm_area_struct *vma,
  * overridden by the platform.  This is necessary on platforms that don't
  * support legacy I/O routing or that hard fail on legacy I/O timeouts.
  */
-int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size)
+int pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size)
 {
 	int ret = size;
 
@@ -508,7 +507,7 @@ int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size)
 }
 
 /**
- * ia64_pci_legacy_write - perform a legacy I/O write
+ * pci_legacy_write - perform a legacy I/O write
  * @bus: bus pointer
  * @port: port to write
  * @val: value to write
@@ -516,7 +515,7 @@ int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size)
  *
  * Simply writes @size bytes of @val to @port.
  */
-int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size)
+int pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size)
 {
 	int ret = size;
 
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 17/28] ia64: remove the hpsim platform
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (14 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 16/28] ia64: remove now unused machvec indirections Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13 21:06   ` Vaden, Tom (HPE Server OS Architecture)
  2019-08-13  7:25 ` [PATCH 18/28] ia64: remove CONFIG_PCI ifdefs Christoph Hellwig
                   ` (10 subsequent siblings)
  26 siblings, 1 reply; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The hpsim platform supports the HP IA64 simulator which was useful as a
bring up platform.  But it is fairly non-standard vs real IA64 system
in that it for example doesn't support ACPI.  It also comes with a
whole bunch of simulator specific drivers.  Remove it to simplify the
IA64 port.

Note that through a weird twist only them hpsim boot loader built the
vmlinux.gz file, so the makefile targets for that are moved to the
main ia64 Makefile now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/Kconfig                     |  34 +-
 arch/ia64/Makefile                    |  27 +-
 arch/ia64/configs/sim_defconfig       |  52 ---
 arch/ia64/hp/sim/Kconfig              |  23 --
 arch/ia64/hp/sim/Makefile             |  17 -
 arch/ia64/hp/sim/boot/Makefile        |  37 --
 arch/ia64/hp/sim/boot/boot_head.S     | 165 --------
 arch/ia64/hp/sim/boot/bootloader.c    | 175 ---------
 arch/ia64/hp/sim/boot/bootloader.lds  |  67 ----
 arch/ia64/hp/sim/boot/fw-emu.c        | 374 ------------------
 arch/ia64/hp/sim/boot/ssc.h           |  36 --
 arch/ia64/hp/sim/hpsim.S              |  11 -
 arch/ia64/hp/sim/hpsim_console.c      |  77 ----
 arch/ia64/hp/sim/hpsim_irq.c          |  76 ----
 arch/ia64/hp/sim/hpsim_machvec.c      |   3 -
 arch/ia64/hp/sim/hpsim_setup.c        |  41 --
 arch/ia64/hp/sim/hpsim_ssc.h          |  37 --
 arch/ia64/hp/sim/simeth.c             | 510 -------------------------
 arch/ia64/hp/sim/simscsi.c            | 373 ------------------
 arch/ia64/hp/sim/simserial.c          | 521 --------------------------
 arch/ia64/include/asm/acpi.h          |   4 +-
 arch/ia64/include/asm/hpsim.h         |  17 -
 arch/ia64/include/asm/iosapic.h       |  12 -
 arch/ia64/include/asm/machvec.h       |  11 +-
 arch/ia64/include/asm/machvec_hpsim.h |  19 -
 arch/ia64/kernel/Makefile             |   3 +-
 arch/ia64/kernel/irq_ia64.c           |   2 -
 arch/ia64/kernel/setup.c              |  13 +-
 28 files changed, 26 insertions(+), 2711 deletions(-)
 delete mode 100644 arch/ia64/configs/sim_defconfig
 delete mode 100644 arch/ia64/hp/sim/Kconfig
 delete mode 100644 arch/ia64/hp/sim/Makefile
 delete mode 100644 arch/ia64/hp/sim/boot/Makefile
 delete mode 100644 arch/ia64/hp/sim/boot/boot_head.S
 delete mode 100644 arch/ia64/hp/sim/boot/bootloader.c
 delete mode 100644 arch/ia64/hp/sim/boot/bootloader.lds
 delete mode 100644 arch/ia64/hp/sim/boot/fw-emu.c
 delete mode 100644 arch/ia64/hp/sim/boot/ssc.h
 delete mode 100644 arch/ia64/hp/sim/hpsim.S
 delete mode 100644 arch/ia64/hp/sim/hpsim_console.c
 delete mode 100644 arch/ia64/hp/sim/hpsim_irq.c
 delete mode 100644 arch/ia64/hp/sim/hpsim_machvec.c
 delete mode 100644 arch/ia64/hp/sim/hpsim_setup.c
 delete mode 100644 arch/ia64/hp/sim/hpsim_ssc.h
 delete mode 100644 arch/ia64/hp/sim/simeth.c
 delete mode 100644 arch/ia64/hp/sim/simscsi.c
 delete mode 100644 arch/ia64/hp/sim/simserial.c
 delete mode 100644 arch/ia64/include/asm/hpsim.h
 delete mode 100644 arch/ia64/include/asm/machvec_hpsim.h

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index ae3aca14506e..63db7a5378ac 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -10,11 +10,11 @@ config IA64
 	bool
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
-	select ACPI if (!IA64_HP_SIM)
-	select ARCH_SUPPORTS_ACPI if (!IA64_HP_SIM)
+	select ACPI
+	select ARCH_SUPPORTS_ACPI
 	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
 	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
-	select FORCE_PCI if (!IA64_HP_SIM)
+	select FORCE_PCI
 	select PCI_DOMAINS if PCI
 	select PCI_SYSCALL if PCI
 	select HAVE_UNSTABLE_SCHED_CLOCK
@@ -140,7 +140,6 @@ config IA64_GENERIC
 	  HP-zx1/sx1000		For HP systems
 	  HP-zx1/sx1000+swiotlb	For HP systems with (broken) DMA-constrained devices.
 	  SGI-UV		For SGI UV systems
-	  Ski-simulator		For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 
 	  If you don't know what to do, choose "generic".
 
@@ -181,11 +180,6 @@ config IA64_SGI_UV
 	  to select this option.  If in doubt, select ia64 generic support
 	  instead.
 
-config IA64_HP_SIM
-	bool "Ski-simulator"
-	select SWIOTLB
-	depends on !PM
-
 endchoice
 
 choice
@@ -239,14 +233,7 @@ config IA64_PAGE_SIZE_64KB
 
 endchoice
 
-if IA64_HP_SIM
-config HZ
-	default 32
-endif
-
-if !IA64_HP_SIM
 source "kernel/Kconfig.hz"
-endif
 
 config IA64_BRL_EMU
 	bool
@@ -265,11 +252,6 @@ config IA64_CYCLONE
 	  Say Y here to enable support for IBM EXA Cyclone time source.
 	  If you're unsure, answer N.
 
-config IOSAPIC
-	bool
-	depends on !IA64_HP_SIM
-	default y
-
 config FORCE_MAX_ZONEORDER
 	int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 	range 11 17  if !HUGETLB_PAGE
@@ -373,7 +355,7 @@ config ARCH_DISCONTIGMEM_DEFAULT
 
 config NUMA
 	bool "NUMA support"
-	depends on !IA64_HP_SIM && !FLATMEM
+	depends on !FLATMEM
 	select ACPI_NUMA if ACPI
 	help
 	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
@@ -395,7 +377,7 @@ config NODES_SHIFT
 config VIRTUAL_MEM_MAP
 	bool "Virtual mem map"
 	depends on !SPARSEMEM
-	default y if !IA64_HP_SIM
+	default y
 	help
 	  Say Y to compile the kernel with support for a virtual mem map.
 	  This code also only takes effect if a memory hole of greater than
@@ -478,7 +460,7 @@ config IA64_HP_AML_NFW
 
 config KEXEC
 	bool "kexec system call"
-	depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
+	depends on !SMP || HOTPLUG_CPU
 	select KEXEC_CORE
 	help
 	  kexec is a system call that implements the ability to shutdown your
@@ -496,7 +478,7 @@ config KEXEC
 
 config CRASH_DUMP
 	  bool "kernel crash dumps"
-	  depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
+	  depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
 	  help
 	    Generate crash dump after being started by kexec.
 
@@ -518,8 +500,6 @@ endif
 
 endmenu
 
-source "arch/ia64/hp/sim/Kconfig"
-
 config MSPEC
 	tristate "Memory special operations driver"
 	depends on IA64
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 0d730b061f72..8b866fc1f9cb 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -39,6 +39,12 @@ $(error Sorry, you need a newer version of the assember, one that is built from
 		ftp://ftp.hpl.hp.com/pub/linux-ia64/gas-030124.tar.gz)
 endif
 
+quiet_cmd_gzip = GZIP    $@
+cmd_gzip = cat $(real-prereqs) | gzip -n -f -9 > $@
+
+quiet_cmd_objcopy = OBJCOPY $@
+cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
+
 KBUILD_CFLAGS += $(cflags-y)
 head-y := arch/ia64/kernel/head.o
 
@@ -52,15 +58,12 @@ core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
 core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
 
 drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
-drivers-$(CONFIG_IA64_HP_SIM)	+= arch/ia64/hp/sim/
 drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
 drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
-drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/uv/
+drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/
 drivers-$(CONFIG_OPROFILE)	+= arch/ia64/oprofile/
 
-boot := arch/ia64/hp/sim/boot
-
-PHONY += boot compressed check
+PHONY += compressed check
 
 all: compressed unwcheck
 
@@ -68,22 +71,21 @@ compressed: vmlinux.gz
 
 vmlinuz: vmlinux.gz
 
-vmlinux.gz: vmlinux
-	$(Q)$(MAKE) $(build)=$(boot) $@
+vmlinux.gz: vmlinux.bin FORCE
+	$(call if_changed,gzip)
+
+vmlinux.bin: vmlinux FORCE
+	$(call if_changed,objcopy)
 
 unwcheck: vmlinux
 	-$(Q)READELF=$(READELF) $(PYTHON) $(srctree)/arch/ia64/scripts/unwcheck.py $<
 
 archclean:
-	$(Q)$(MAKE) $(clean)=$(boot)
 
 archheaders:
 	$(Q)$(MAKE) $(build)=arch/ia64/kernel/syscalls all
 
-CLEAN_FILES += vmlinux.gz bootloader
-
-boot:	lib/lib.a vmlinux
-	$(Q)$(MAKE) $(build)=$(boot) $@
+CLEAN_FILES += vmlinux.gz
 
 install: vmlinux.gz
 	sh $(srctree)/arch/ia64/install.sh $(KERNELRELEASE) $< System.map "$(INSTALL_PATH)"
@@ -91,7 +93,6 @@ install: vmlinux.gz
 define archhelp
   echo '* compressed	- Build compressed kernel image'
   echo '  install	- Install compressed kernel image'
-  echo '  boot		- Build vmlinux and bootloader for Ski simulator'
   echo '* unwcheck	- Check vmlinux for invalid unwind info'
 endef
 
diff --git a/arch/ia64/configs/sim_defconfig b/arch/ia64/configs/sim_defconfig
deleted file mode 100644
index f0f69fdbddae..000000000000
--- a/arch/ia64/configs/sim_defconfig
+++ /dev/null
@@ -1,52 +0,0 @@
-CONFIG_SYSVIPC=y
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_LOG_BUF_SHIFT=16
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_MODULE_FORCE_UNLOAD=y
-CONFIG_MODVERSIONS=y
-CONFIG_PARTITION_ADVANCED=y
-CONFIG_IA64_HP_SIM=y
-CONFIG_MCKINLEY=y
-CONFIG_IA64_PAGE_SIZE_64KB=y
-CONFIG_SMP=y
-CONFIG_NR_CPUS=64
-CONFIG_PREEMPT=y
-CONFIG_IA64_PALINFO=m
-CONFIG_EFI_VARS=y
-CONFIG_BINFMT_MISC=y
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-# CONFIG_IPV6 is not set
-# CONFIG_STANDALONE is not set
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_SCSI=y
-CONFIG_BLK_DEV_SD=y
-CONFIG_SCSI_CONSTANTS=y
-CONFIG_SCSI_LOGGING=y
-CONFIG_SCSI_SPI_ATTRS=y
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_EFI_RTC=y
-# CONFIG_VGA_CONSOLE is not set
-CONFIG_HP_SIMETH=y
-CONFIG_HP_SIMSERIAL=y
-CONFIG_HP_SIMSERIAL_CONSOLE=y
-CONFIG_HP_SIMSCSI=y
-CONFIG_EXT2_FS=y
-CONFIG_EXT3_FS=y
-# CONFIG_EXT3_FS_XATTR is not set
-CONFIG_PROC_KCORE=y
-CONFIG_HUGETLBFS=y
-CONFIG_NFS_FS=y
-CONFIG_NFSD=y
-CONFIG_NFSD_V3=y
-CONFIG_DEBUG_INFO=y
-CONFIG_DEBUG_KERNEL=y
-CONFIG_DEBUG_MUTEXES=y
diff --git a/arch/ia64/hp/sim/Kconfig b/arch/ia64/hp/sim/Kconfig
deleted file mode 100644
index 56fb4f1d4f7c..000000000000
--- a/arch/ia64/hp/sim/Kconfig
+++ /dev/null
@@ -1,23 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-menu "HP Simulator drivers"
-	depends on IA64_HP_SIM || IA64_GENERIC
-
-config HP_SIMETH
-	bool "Simulated Ethernet "
-	depends on NET
-
-config HP_SIMSERIAL
-	bool "Simulated serial driver support"
-	depends on TTY
-
-config HP_SIMSERIAL_CONSOLE
-	bool "Console for HP simulator"
-	depends on HP_SIMSERIAL
-
-config HP_SIMSCSI
-	bool "Simulated SCSI disk"
-	depends on SCSI=y
-
-endmenu
-
diff --git a/arch/ia64/hp/sim/Makefile b/arch/ia64/hp/sim/Makefile
deleted file mode 100644
index 0224a13d2c5b..000000000000
--- a/arch/ia64/hp/sim/Makefile
+++ /dev/null
@@ -1,17 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# ia64/platform/hp/sim/Makefile
-#
-# Copyright (C) 2002 Hewlett-Packard Co.
-#	David Mosberger-Tang <davidm@hpl.hp.com>
-# Copyright (C) 1999 Silicon Graphics, Inc.
-# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
-#
-
-obj-y := hpsim_irq.o hpsim_setup.o hpsim.o
-obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
-
-obj-$(CONFIG_HP_SIMETH)	+= simeth.o
-obj-$(CONFIG_HP_SIMSERIAL) += simserial.o
-obj-$(CONFIG_HP_SIMSERIAL_CONSOLE) += hpsim_console.o
-obj-$(CONFIG_HP_SIMSCSI) += simscsi.o
diff --git a/arch/ia64/hp/sim/boot/Makefile b/arch/ia64/hp/sim/boot/Makefile
deleted file mode 100644
index df6e9968c845..000000000000
--- a/arch/ia64/hp/sim/boot/Makefile
+++ /dev/null
@@ -1,37 +0,0 @@
-#
-# ia64/boot/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 1998, 2003 by David Mosberger-Tang <davidm@hpl.hp.com>
-#
-
-targets-$(CONFIG_IA64_HP_SIM)  += bootloader
-targets := vmlinux.bin vmlinux.gz $(targets-y)
-
-quiet_cmd_cptotop = LN      $@
-      cmd_cptotop = ln -f $< $@
-
-vmlinux.gz: $(obj)/vmlinux.gz $(addprefix $(obj)/,$(targets-y))
-	$(call cmd,cptotop)
-	@echo '  Kernel: $@ is ready'
-
-boot: bootloader
-
-bootloader: $(obj)/bootloader
-	$(call cmd,cptotop)
-
-$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
-	$(call if_changed,gzip)
-
-$(obj)/vmlinux.bin: vmlinux FORCE
-	$(call if_changed,objcopy)
-
-
-LDFLAGS_bootloader = -static -T
-
-$(obj)/bootloader: $(src)/bootloader.lds $(obj)/bootloader.o $(obj)/boot_head.o $(obj)/fw-emu.o \
-                   lib/lib.a arch/ia64/lib/lib.a FORCE
-	$(call if_changed,ld)
diff --git a/arch/ia64/hp/sim/boot/boot_head.S b/arch/ia64/hp/sim/boot/boot_head.S
deleted file mode 100644
index a7d178fb41e8..000000000000
--- a/arch/ia64/hp/sim/boot/boot_head.S
+++ /dev/null
@@ -1,165 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 1998-2003 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- */
-
-#include <asm/asmmacro.h>
-#include <asm/pal.h>
-
-	.bss
-	.align 16
-stack_mem:
-	.skip 16834
-
-	.text
-
-/* This needs to be defined because lib/string.c:strlcat() calls it in case of error... */
-GLOBAL_ENTRY(printk)
-	break 0
-END(printk)
-
-GLOBAL_ENTRY(_start)
-	.prologue
-	.save rp, r0
-	.body
-	movl gp = __gp
-	movl sp = stack_mem+16384-16
-	bsw.1
-	br.call.sptk.many rp=start_bootloader
-0:	nop 0		  /* dummy nop to make unwinding work */
-END(_start)
-
-/*
- * Set a break point on this function so that symbols are available to set breakpoints in
- * the kernel being debugged.
- */
-GLOBAL_ENTRY(debug_break)
-	br.ret.sptk.many b0
-END(debug_break)
-
-GLOBAL_ENTRY(ssc)
-	.regstk 5,0,0,0
-	mov r15=in4
-	break 0x80001
-	br.ret.sptk.many b0
-END(ssc)
-
-GLOBAL_ENTRY(jmp_to_kernel)
-	.regstk 2,0,0,0
-	mov r28=in0
-	mov b7=in1
-	br.sptk.few b7
-END(jmp_to_kernel)
-
-/*
- * r28 contains the index of the PAL function
- * r29--31 the args
- * Return values in ret0--3 (r8--11)
- */
-GLOBAL_ENTRY(pal_emulator_static)
-	mov r8=-1
-	mov r9=256
-	;;
-	cmp.gtu p6,p7=r9,r28		/* r28 <= 255? */
-(p6)	br.cond.sptk.few static
-	;;
-	mov r9=512
-	;;
-	cmp.gtu p6,p7=r9,r28
-(p6)	br.cond.sptk.few stacked
-	;;
-static:	cmp.eq p6,p7=PAL_PTCE_INFO,r28
-(p7)	br.cond.sptk.few 1f
-	;;
-	mov r8=0			/* status = 0 */
-	movl r9=0x100000000		/* tc.base */
-	movl r10=0x0000000200000003	/* count[0], count[1] */
-	movl r11=0x1000000000002000	/* stride[0], stride[1] */
-	br.cond.sptk.few rp
-1:	cmp.eq p6,p7=PAL_FREQ_RATIOS,r28
-(p7)	br.cond.sptk.few 1f
-	mov r8=0			/* status = 0 */
-	movl r9 =0x100000064		/* proc_ratio (1/100) */
-	movl r10=0x100000100		/* bus_ratio<<32 (1/256) */
-	movl r11=0x100000064		/* itc_ratio<<32 (1/100) */
-	;;
-1:	cmp.eq p6,p7=PAL_RSE_INFO,r28
-(p7)	br.cond.sptk.few 1f
-	mov r8=0			/* status = 0 */
-	mov r9=96			/* num phys stacked */
-	mov r10=0			/* hints */
-	mov r11=0
-	br.cond.sptk.few rp
-1:	cmp.eq p6,p7=PAL_CACHE_FLUSH,r28		/* PAL_CACHE_FLUSH */
-(p7)	br.cond.sptk.few 1f
-	mov r9=ar.lc
-	movl r8=524288			/* flush 512k million cache lines (16MB) */
-	;;
-	mov ar.lc=r8
-	movl r8=0xe000000000000000
-	;;
-.loop:	fc r8
-	add r8=32,r8
-	br.cloop.sptk.few .loop
-	sync.i
-	;;
-	srlz.i
-	;;
-	mov ar.lc=r9
-	mov r8=r0
-	;;
-1:	cmp.eq p6,p7=PAL_PERF_MON_INFO,r28
-(p7)	br.cond.sptk.few 1f
-	mov r8=0			/* status = 0 */
-	movl r9 =0x08122f04		/* generic=4 width=47 retired=8 cycles=18 */
-	mov r10=0			/* reserved */
-	mov r11=0			/* reserved */
-	mov r16=0xffff			/* implemented PMC */
-	mov r17=0x3ffff			/* implemented PMD */
-	add r18=8,r29			/* second index */
-	;;
-	st8 [r29]=r16,16		/* store implemented PMC */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	;;
-	st8 [r29]=r0,16			/* clear remaining bits  */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	;;
-	st8 [r29]=r17,16		/* store implemented PMD */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	mov r16=0xf0			/* cycles count capable PMC */
-	;;
-	st8 [r29]=r0,16			/* clear remaining bits  */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	mov r17=0xf0			/* retired bundles capable PMC */
-	;;
-	st8 [r29]=r16,16		/* store cycles capable */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	;;
-	st8 [r29]=r0,16			/* clear remaining bits  */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	;;
-	st8 [r29]=r17,16		/* store retired bundle capable */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	;;
-	st8 [r29]=r0,16			/* clear remaining bits  */
-	st8 [r18]=r0,16			/* clear remaining bits  */
-	;;
-1:	cmp.eq p6,p7=PAL_VM_SUMMARY,r28
-(p7)	br.cond.sptk.few 1f
-	mov	r8=0			/* status = 0  */
-	movl	r9=0x2044040020F1865	/* num_tc_levels=2, num_unique_tcs=4 */
-					/* max_itr_entry=64, max_dtr_entry=64 */
-					/* hash_tag_id=2, max_pkr=15 */
-					/* key_size=24, phys_add_size=50, vw=1 */
-	movl	r10=0x183C		/* rid_size=24, impl_va_msb=60 */
-	;;
-1:	cmp.eq p6,p7=PAL_MEM_ATTRIB,r28
-(p7)	br.cond.sptk.few 1f
-	mov	r8=0			/* status = 0 */
-	mov	r9=0x80|0x01		/* NatPage|WB */
-	;;
-1:	br.cond.sptk.few rp
-stacked:
-	br.ret.sptk.few rp
-END(pal_emulator_static)
diff --git a/arch/ia64/hp/sim/boot/bootloader.c b/arch/ia64/hp/sim/boot/bootloader.c
deleted file mode 100644
index 6d804608dc81..000000000000
--- a/arch/ia64/hp/sim/boot/bootloader.c
+++ /dev/null
@@ -1,175 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * arch/ia64/hp/sim/boot/bootloader.c
- *
- * Loads an ELF kernel.
- *
- * Copyright (C) 1998-2003 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- *	Stephane Eranian <eranian@hpl.hp.com>
- *
- * 01/07/99 S.Eranian modified to pass command line arguments to kernel
- */
-struct task_struct;	/* forward declaration for elf.h */
-
-#include <linux/elf.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-
-#include <asm/elf.h>
-#include <asm/intrinsics.h>
-#include <asm/pal.h>
-#include <asm/pgtable.h>
-#include <asm/sal.h>
-
-#include "ssc.h"
-
-struct disk_req {
-	unsigned long addr;
-	unsigned len;
-};
-
-struct disk_stat {
-	int fd;
-	unsigned count;
-};
-
-extern void jmp_to_kernel (unsigned long bp, unsigned long e_entry);
-extern struct ia64_boot_param *sys_fw_init (const char *args, int arglen);
-extern void debug_break (void);
-
-static void
-cons_write (const char *buf)
-{
-	unsigned long ch;
-
-	while ((ch = *buf++) != '\0') {
-		ssc(ch, 0, 0, 0, SSC_PUTCHAR);
-		if (ch == '\n')
-		  ssc('\r', 0, 0, 0, SSC_PUTCHAR);
-	}
-}
-
-#define MAX_ARGS 32
-
-void
-start_bootloader (void)
-{
-	static char mem[4096];
-	static char buffer[1024];
-	unsigned long off;
-	int fd, i;
-	struct disk_req req;
-	struct disk_stat stat;
-	struct elfhdr *elf;
-	struct elf_phdr *elf_phdr;	/* program header */
-	unsigned long e_entry, e_phoff, e_phnum;
-	register struct ia64_boot_param *bp;
-	char *kpath, *args;
-	long arglen = 0;
-
-	ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
-
-	/*
-	 * S.Eranian: extract the commandline argument from the simulator
-	 *
-	 * The expected format is as follows:
-         *
-	 *	kernelname args...
-	 *
-	 * Both are optional but you can't have the second one without the first.
-	 */
-	arglen = ssc((long) buffer, 0, 0, 0, SSC_GET_ARGS);
-
-	kpath = "vmlinux";
-	args = buffer;
-	if (arglen > 0) {
-		kpath = buffer;
-		while (*args != ' ' && *args != '\0')
-			++args, --arglen;
-		if (*args == ' ')
-			*args++ = '\0', --arglen;
-	}
-
-	if (arglen <= 0) {
-		args = "";
-		arglen = 1;
-	}
-
-	fd = ssc((long) kpath, 1, 0, 0, SSC_OPEN);
-
-	if (fd < 0) {
-		cons_write(kpath);
-		cons_write(": file not found, reboot now\n");
-		for(;;);
-	}
-	stat.fd = fd;
-	off = 0;
-
-	req.len = sizeof(mem);
-	req.addr = (long) mem;
-	ssc(fd, 1, (long) &req, off, SSC_READ);
-	ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
-
-	elf = (struct elfhdr *) mem;
-	if (elf->e_ident[0] == 0x7f && strncmp(elf->e_ident + 1, "ELF", 3) != 0) {
-		cons_write("not an ELF file\n");
-		return;
-	}
-	if (elf->e_type != ET_EXEC) {
-		cons_write("not an ELF executable\n");
-		return;
-	}
-	if (!elf_check_arch(elf)) {
-		cons_write("kernel not for this processor\n");
-		return;
-	}
-
-	e_entry = elf->e_entry;
-	e_phnum = elf->e_phnum;
-	e_phoff = elf->e_phoff;
-
-	cons_write("loading ");
-	cons_write(kpath);
-	cons_write("...\n");
-
-	for (i = 0; i < e_phnum; ++i) {
-		req.len = sizeof(*elf_phdr);
-		req.addr = (long) mem;
-		ssc(fd, 1, (long) &req, e_phoff, SSC_READ);
-		ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
-		if (stat.count != sizeof(*elf_phdr)) {
-			cons_write("failed to read phdr\n");
-			return;
-		}
-		e_phoff += sizeof(*elf_phdr);
-
-		elf_phdr = (struct elf_phdr *) mem;
-
-		if (elf_phdr->p_type != PT_LOAD)
-			continue;
-
-		req.len = elf_phdr->p_filesz;
-		req.addr = __pa(elf_phdr->p_paddr);
-		ssc(fd, 1, (long) &req, elf_phdr->p_offset, SSC_READ);
-		ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
-		memset((char *)__pa(elf_phdr->p_paddr) + elf_phdr->p_filesz, 0,
-		       elf_phdr->p_memsz - elf_phdr->p_filesz);
-	}
-	ssc(fd, 0, 0, 0, SSC_CLOSE);
-
-	cons_write("starting kernel...\n");
-
-	/* fake an I/O base address: */
-	ia64_setreg(_IA64_REG_AR_KR0, 0xffffc000000UL);
-
-	bp = sys_fw_init(args, arglen);
-
-	ssc(0, (long) kpath, 0, 0, SSC_LOAD_SYMBOLS);
-
-	debug_break();
-	jmp_to_kernel((unsigned long) bp, e_entry);
-
-	cons_write("kernel returned!\n");
-	ssc(-1, 0, 0, 0, SSC_EXIT);
-}
diff --git a/arch/ia64/hp/sim/boot/bootloader.lds b/arch/ia64/hp/sim/boot/bootloader.lds
deleted file mode 100644
index f3f284d6514c..000000000000
--- a/arch/ia64/hp/sim/boot/bootloader.lds
+++ /dev/null
@@ -1,67 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-OUTPUT_FORMAT("elf64-ia64-little")
-OUTPUT_ARCH(ia64)
-ENTRY(_start)
-SECTIONS
-{
-  /* Read-only sections, merged into text segment: */
-  . = 0x100000;
-
-  _text = .;
-  .text : { *(__ivt_section) *(.text) }
-  _etext = .;
-
-  /* Global data */
-  _data = .;
-  .rodata : { *(.rodata) *(.rodata.*) }
-  .data    : { *(.data) *(.gnu.linkonce.d*) CONSTRUCTORS }
-  __gp = ALIGN (8) + 0x200000;
-  .got           : { *(.got.plt) *(.got) }
-  /* We want the small data sections together, so single-instruction offsets
-     can access them all, and initialized data all before uninitialized, so
-     we can shorten the on-disk segment size.  */
-  .sdata     : { *(.sdata) }
-  _edata  =  .;
-
-  __bss_start = .;
-  .sbss      : { *(.sbss) *(.scommon) }
-  .bss       : { *(.bss) *(COMMON) }
-  . = ALIGN(64 / 8);
-  __bss_stop = .;
-  _end = . ;
-
-  /* Stabs debugging sections.  */
-  .stab 0 : { *(.stab) }
-  .stabstr 0 : { *(.stabstr) }
-  .stab.excl 0 : { *(.stab.excl) }
-  .stab.exclstr 0 : { *(.stab.exclstr) }
-  .stab.index 0 : { *(.stab.index) }
-  .stab.indexstr 0 : { *(.stab.indexstr) }
-  .comment 0 : { *(.comment) }
-  /* DWARF debug sections.
-     Symbols in the DWARF debugging sections are relative to the beginning
-     of the section so we begin them at 0.  */
-  /* DWARF 1 */
-  .debug          0 : { *(.debug) }
-  .line           0 : { *(.line) }
-  /* GNU DWARF 1 extensions */
-  .debug_srcinfo  0 : { *(.debug_srcinfo) }
-  .debug_sfnames  0 : { *(.debug_sfnames) }
-  /* DWARF 1.1 and DWARF 2 */
-  .debug_aranges  0 : { *(.debug_aranges) }
-  .debug_pubnames 0 : { *(.debug_pubnames) }
-  /* DWARF 2 */
-  .debug_info     0 : { *(.debug_info) }
-  .debug_abbrev   0 : { *(.debug_abbrev) }
-  .debug_line     0 : { *(.debug_line) }
-  .debug_frame    0 : { *(.debug_frame) }
-  .debug_str      0 : { *(.debug_str) }
-  .debug_loc      0 : { *(.debug_loc) }
-  .debug_macinfo  0 : { *(.debug_macinfo) }
-  /* SGI/MIPS DWARF 2 extensions */
-  .debug_weaknames 0 : { *(.debug_weaknames) }
-  .debug_funcnames 0 : { *(.debug_funcnames) }
-  .debug_typenames 0 : { *(.debug_typenames) }
-  .debug_varnames  0 : { *(.debug_varnames) }
-  /* These must appear regardless of  .  */
-}
diff --git a/arch/ia64/hp/sim/boot/fw-emu.c b/arch/ia64/hp/sim/boot/fw-emu.c
deleted file mode 100644
index 517fb2822e04..000000000000
--- a/arch/ia64/hp/sim/boot/fw-emu.c
+++ /dev/null
@@ -1,374 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * PAL & SAL emulation.
- *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- */
-
-#ifdef CONFIG_PCI
-# include <linux/pci.h>
-#endif
-
-#include <linux/efi.h>
-#include <asm/io.h>
-#include <asm/pal.h>
-#include <asm/sal.h>
-#include <asm/setup.h>
-
-#include "ssc.h"
-
-#define MB	(1024*1024UL)
-
-#define SIMPLE_MEMMAP	1
-
-#if SIMPLE_MEMMAP
-# define NUM_MEM_DESCS	4
-#else
-# define NUM_MEM_DESCS	16
-#endif
-
-static char fw_mem[(  sizeof(struct ia64_boot_param)
-		    + sizeof(efi_system_table_t)
-		    + sizeof(efi_runtime_services_t)
-		    + 1*sizeof(efi_config_table_t)
-		    + sizeof(struct ia64_sal_systab)
-		    + sizeof(struct ia64_sal_desc_entry_point)
-		    + NUM_MEM_DESCS*(sizeof(efi_memory_desc_t))
-		    + 1024)] __attribute__ ((aligned (8)));
-
-#define SECS_PER_HOUR   (60 * 60)
-#define SECS_PER_DAY    (SECS_PER_HOUR * 24)
-
-/* Compute the `struct tm' representation of *T,
-   offset OFFSET seconds east of UTC,
-   and store year, yday, mon, mday, wday, hour, min, sec into *TP.
-   Return nonzero if successful.  */
-int
-offtime (unsigned long t, efi_time_t *tp)
-{
-	const unsigned short int __mon_yday[2][13] =
-	{
-		/* Normal years.  */
-		{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
-		/* Leap years.  */
-		{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
-	};
-	long int days, rem, y;
-	const unsigned short int *ip;
-
-	days = t / SECS_PER_DAY;
-	rem = t % SECS_PER_DAY;
-	while (rem < 0) {
-		rem += SECS_PER_DAY;
-		--days;
-	}
-	while (rem >= SECS_PER_DAY) {
-		rem -= SECS_PER_DAY;
-		++days;
-	}
-	tp->hour = rem / SECS_PER_HOUR;
-	rem %= SECS_PER_HOUR;
-	tp->minute = rem / 60;
-	tp->second = rem % 60;
-	/* January 1, 1970 was a Thursday.  */
-	y = 1970;
-
-#	define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
-#	define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
-#	define __isleap(year) \
-	  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
-
-	while (days < 0 || days >= (__isleap (y) ? 366 : 365)) {
-		/* Guess a corrected year, assuming 365 days per year.  */
-		long int yg = y + days / 365 - (days % 365 < 0);
-
-		/* Adjust DAYS and Y to match the guessed year.  */
-		days -= ((yg - y) * 365 + LEAPS_THRU_END_OF (yg - 1)
-			 - LEAPS_THRU_END_OF (y - 1));
-		y = yg;
-	}
-	tp->year = y;
-	ip = __mon_yday[__isleap(y)];
-	for (y = 11; days < (long int) ip[y]; --y)
-		continue;
-	days -= ip[y];
-	tp->month = y + 1;
-	tp->day = days + 1;
-	return 1;
-}
-
-extern void pal_emulator_static (void);
-
-/* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */
-
-#define BUILD_CMD(addr)		((0x80000000 | (addr)) & ~3)
-
-#define REG_OFFSET(addr)	(0x00000000000000FF & (addr))
-#define DEVICE_FUNCTION(addr)	(0x000000000000FF00 & (addr))
-#define BUS_NUMBER(addr)	(0x0000000000FF0000 & (addr))
-
-static efi_status_t
-fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc)
-{
-#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
-	struct {
-		int tv_sec;	/* must be 32bits to work */
-		int tv_usec;
-	} tv32bits;
-
-	ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD);
-
-	memset(tm, 0, sizeof(*tm));
-	offtime(tv32bits.tv_sec, tm);
-
-	if (tc)
-		memset(tc, 0, sizeof(*tc));
-#else
-#	error Not implemented yet...
-#endif
-	return EFI_SUCCESS;
-}
-
-static void
-efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data)
-{
-#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
-	ssc(status, 0, 0, 0, SSC_EXIT);
-#else
-#	error Not implemented yet...
-#endif
-}
-
-static efi_status_t
-efi_unimplemented (void)
-{
-	return EFI_UNSUPPORTED;
-}
-
-static struct sal_ret_values
-sal_emulator (long index, unsigned long in1, unsigned long in2,
-	      unsigned long in3, unsigned long in4, unsigned long in5,
-	      unsigned long in6, unsigned long in7)
-{
-	long r9  = 0;
-	long r10 = 0;
-	long r11 = 0;
-	long status;
-
-	/*
-	 * Don't do a "switch" here since that gives us code that
-	 * isn't self-relocatable.
-	 */
-	status = 0;
-	if (index == SAL_FREQ_BASE) {
-		if (in1 == SAL_FREQ_BASE_PLATFORM)
-			r9 = 200000000;
-		else if (in1 == SAL_FREQ_BASE_INTERVAL_TIMER) {
-			/*
-			 * Is this supposed to be the cr.itc frequency
-			 * or something platform specific?  The SAL
-			 * doc ain't exactly clear on this...
-			 */
-			r9 = 700000000;
-		} else if (in1 == SAL_FREQ_BASE_REALTIME_CLOCK)
-			r9 = 1;
-		else
-			status = -1;
-	} else if (index == SAL_SET_VECTORS) {
-		;
-	} else if (index == SAL_GET_STATE_INFO) {
-		;
-	} else if (index == SAL_GET_STATE_INFO_SIZE) {
-		;
-	} else if (index == SAL_CLEAR_STATE_INFO) {
-		;
-	} else if (index == SAL_MC_RENDEZ) {
-		;
-	} else if (index == SAL_MC_SET_PARAMS) {
-		;
-	} else if (index == SAL_CACHE_FLUSH) {
-		;
-	} else if (index == SAL_CACHE_INIT) {
-		;
-#ifdef CONFIG_PCI
-	} else if (index == SAL_PCI_CONFIG_READ) {
-		/*
-		 * in1 contains the PCI configuration address and in2
-		 * the size of the read.  The value that is read is
-		 * returned via the general register r9.
-		 */
-                outl(BUILD_CMD(in1), 0xCF8);
-                if (in2 == 1)                           /* Reading byte  */
-                        r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3)));
-                else if (in2 == 2)                      /* Reading word  */
-                        r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2)));
-                else                                    /* Reading dword */
-                        r9 = inl(0xCFC);
-                status = PCIBIOS_SUCCESSFUL;
-	} else if (index == SAL_PCI_CONFIG_WRITE) {
-	      	/*
-		 * in1 contains the PCI configuration address, in2 the
-		 * size of the write, and in3 the actual value to be
-		 * written out.
-		 */
-                outl(BUILD_CMD(in1), 0xCF8);
-                if (in2 == 1)                           /* Writing byte  */
-                        outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3)));
-                else if (in2 == 2)                      /* Writing word  */
-                        outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2)));
-                else                                    /* Writing dword */
-                        outl(in3, 0xCFC);
-                status = PCIBIOS_SUCCESSFUL;
-#endif /* CONFIG_PCI */
-	} else if (index == SAL_UPDATE_PAL) {
-		;
-	} else {
-		status = -1;
-	}
-	return ((struct sal_ret_values) {status, r9, r10, r11});
-}
-
-struct ia64_boot_param *
-sys_fw_init (const char *args, int arglen)
-{
-	efi_system_table_t *efi_systab;
-	efi_runtime_services_t *efi_runtime;
-	efi_config_table_t *efi_tables;
-	struct ia64_sal_systab *sal_systab;
-	efi_memory_desc_t *efi_memmap, *md;
-	unsigned long *pal_desc, *sal_desc;
-	struct ia64_sal_desc_entry_point *sal_ed;
-	struct ia64_boot_param *bp;
-	unsigned char checksum = 0;
-	char *cp, *cmd_line;
-	int i = 0;
-#	define MAKE_MD(typ, attr, start, end)		\
-	do {						\
-		md = efi_memmap + i++;			\
-		md->type = typ;				\
-		md->pad = 0;				\
-		md->phys_addr = start;			\
-		md->virt_addr = 0;			\
-		md->num_pages = (end - start) >> 12;	\
-		md->attribute = attr;			\
-	} while (0)
-
-	memset(fw_mem, 0, sizeof(fw_mem));
-
-	pal_desc = (unsigned long *) &pal_emulator_static;
-	sal_desc = (unsigned long *) &sal_emulator;
-
-	cp = fw_mem;
-	efi_systab  = (void *) cp; cp += sizeof(*efi_systab);
-	efi_runtime = (void *) cp; cp += sizeof(*efi_runtime);
-	efi_tables  = (void *) cp; cp += sizeof(*efi_tables);
-	sal_systab  = (void *) cp; cp += sizeof(*sal_systab);
-	sal_ed      = (void *) cp; cp += sizeof(*sal_ed);
-	efi_memmap  = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap);
-	bp	    = (void *) cp; cp += sizeof(*bp);
-	cmd_line    = (void *) cp;
-
-	if (args) {
-		if (arglen >= 1024)
-			arglen = 1023;
-		memcpy(cmd_line, args, arglen);
-	} else {
-		arglen = 0;
-	}
-	cmd_line[arglen] = '\0';
-
-	memset(efi_systab, 0, sizeof(*efi_systab));
-	efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
-	efi_systab->hdr.revision  = ((1 << 16) | 00);
-	efi_systab->hdr.headersize = sizeof(efi_systab->hdr);
-	efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0");
-	efi_systab->fw_revision = 1;
-	efi_systab->runtime = (void *) __pa(efi_runtime);
-	efi_systab->nr_tables = 1;
-	efi_systab->tables = __pa(efi_tables);
-
-	efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
-	efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
-	efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr);
-	efi_runtime->get_time = (void *)__pa(&fw_efi_get_time);
-	efi_runtime->set_time = (void *)__pa(&efi_unimplemented);
-	efi_runtime->get_wakeup_time = (void *)__pa(&efi_unimplemented);
-	efi_runtime->set_wakeup_time = (void *)__pa(&efi_unimplemented);
-	efi_runtime->set_virtual_address_map = (void *)__pa(&efi_unimplemented);
-	efi_runtime->get_variable = (void *)__pa(&efi_unimplemented);
-	efi_runtime->get_next_variable = (void *)__pa(&efi_unimplemented);
-	efi_runtime->set_variable = (void *)__pa(&efi_unimplemented);
-	efi_runtime->get_next_high_mono_count = (void *)__pa(&efi_unimplemented);
-	efi_runtime->reset_system = (void *)__pa(&efi_reset_system);
-
-	efi_tables->guid = SAL_SYSTEM_TABLE_GUID;
-	efi_tables->table = __pa(sal_systab);
-
-	/* fill in the SAL system table: */
-	memcpy(sal_systab->signature, "SST_", 4);
-	sal_systab->size = sizeof(*sal_systab);
-	sal_systab->sal_rev_minor = 1;
-	sal_systab->sal_rev_major = 0;
-	sal_systab->entry_count = 1;
-
-#ifdef CONFIG_IA64_GENERIC
-        strcpy(sal_systab->oem_id, "Generic");
-        strcpy(sal_systab->product_id, "IA-64 system");
-#endif
-
-#ifdef CONFIG_IA64_HP_SIM
-	strcpy(sal_systab->oem_id, "Hewlett-Packard");
-	strcpy(sal_systab->product_id, "HP-simulator");
-#endif
-
-	/* fill in an entry point: */
-	sal_ed->type = SAL_DESC_ENTRY_POINT;
-	sal_ed->pal_proc = __pa(pal_desc[0]);
-	sal_ed->sal_proc = __pa(sal_desc[0]);
-	sal_ed->gp = __pa(sal_desc[1]);
-
-	for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp)
-		checksum += *cp;
-
-	sal_systab->checksum = -checksum;
-
-#if SIMPLE_MEMMAP
-	/* simulate free memory at physical address zero */
-	MAKE_MD(EFI_BOOT_SERVICES_DATA,		EFI_MEMORY_WB,    0*MB,    1*MB);
-	MAKE_MD(EFI_PAL_CODE,			EFI_MEMORY_WB,    1*MB,    2*MB);
-	MAKE_MD(EFI_CONVENTIONAL_MEMORY,	EFI_MEMORY_WB,    2*MB,  130*MB);
-	MAKE_MD(EFI_CONVENTIONAL_MEMORY,	EFI_MEMORY_WB, 4096*MB, 4128*MB);
-#else
-	MAKE_MD( 4,		   0x9, 0x0000000000000000, 0x0000000000001000);
-	MAKE_MD( 7,		   0x9, 0x0000000000001000, 0x000000000008a000);
-	MAKE_MD( 4,		   0x9, 0x000000000008a000, 0x00000000000a0000);
-	MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000);
-	MAKE_MD( 7,		   0x9, 0x0000000000100000, 0x0000000004400000);
-	MAKE_MD( 2,		   0x9, 0x0000000004400000, 0x0000000004be5000);
-	MAKE_MD( 7,		   0x9, 0x0000000004be5000, 0x000000007f77e000);
-	MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000);
-	MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000);
-	MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000);
-	MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000);
-	MAKE_MD( 7,		   0x9, 0x000000007fc3a000, 0x000000007fea0000);
-	MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000);
-	MAKE_MD( 7,		   0x9, 0x000000007fea8000, 0x000000007feab000);
-	MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000);
-	MAKE_MD( 7,		   0x9, 0x00000000ff400000, 0x0000000104000000);
-#endif
-
-	bp->efi_systab = __pa(&fw_mem);
-	bp->efi_memmap = __pa(efi_memmap);
-	bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t);
-	bp->efi_memdesc_size = sizeof(efi_memory_desc_t);
-	bp->efi_memdesc_version = 1;
-	bp->command_line = __pa(cmd_line);
-	bp->console_info.num_cols = 80;
-	bp->console_info.num_rows = 25;
-	bp->console_info.orig_x = 0;
-	bp->console_info.orig_y = 24;
-	bp->fpswa = 0;
-
-	return bp;
-}
diff --git a/arch/ia64/hp/sim/boot/ssc.h b/arch/ia64/hp/sim/boot/ssc.h
deleted file mode 100644
index 88752c7509e0..000000000000
--- a/arch/ia64/hp/sim/boot/ssc.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 1998-2003 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- *	Stephane Eranian <eranian@hpl.hp.com>
- */
-#ifndef ssc_h
-#define ssc_h
-
-/* Simulator system calls: */
-
-#define SSC_CONSOLE_INIT		20
-#define SSC_GETCHAR			21
-#define SSC_PUTCHAR			31
-#define SSC_OPEN			50
-#define SSC_CLOSE			51
-#define SSC_READ			52
-#define SSC_WRITE			53
-#define SSC_GET_COMPLETION		54
-#define SSC_WAIT_COMPLETION		55
-#define SSC_CONNECT_INTERRUPT		58
-#define SSC_GENERATE_INTERRUPT		59
-#define SSC_SET_PERIODIC_INTERRUPT	60
-#define SSC_GET_RTC			65
-#define SSC_EXIT			66
-#define SSC_LOAD_SYMBOLS		69
-#define SSC_GET_TOD			74
-
-#define SSC_GET_ARGS			75
-
-/*
- * Simulator system call.
- */
-extern long ssc (long arg0, long arg1, long arg2, long arg3, int nr);
-
-#endif /* ssc_h */
diff --git a/arch/ia64/hp/sim/hpsim.S b/arch/ia64/hp/sim/hpsim.S
deleted file mode 100644
index 44b4d53e1689..000000000000
--- a/arch/ia64/hp/sim/hpsim.S
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#include <asm/asmmacro.h>
-
-/*
- * Simulator system call.
- */
-GLOBAL_ENTRY(ia64_ssc)
-	mov r15=r36
-	break 0x80001
-	br.ret.sptk.many rp
-END(ia64_ssc)
diff --git a/arch/ia64/hp/sim/hpsim_console.c b/arch/ia64/hp/sim/hpsim_console.c
deleted file mode 100644
index bffd9f67a8a1..000000000000
--- a/arch/ia64/hp/sim/hpsim_console.c
+++ /dev/null
@@ -1,77 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/tty.h>
-#include <linux/kdev_t.h>
-#include <linux/console.h>
-
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/pal.h>
-#include <asm/machvec.h>
-#include <asm/pgtable.h>
-#include <asm/sal.h>
-#include <asm/hpsim.h>
-
-#include "hpsim_ssc.h"
-
-static int simcons_init (struct console *, char *);
-static void simcons_write (struct console *, const char *, unsigned);
-static struct tty_driver *simcons_console_device (struct console *, int *);
-
-static struct console hpsim_cons = {
-	.name =		"simcons",
-	.write =	simcons_write,
-	.device =	simcons_console_device,
-	.setup =	simcons_init,
-	.flags =	CON_PRINTBUFFER,
-	.index =	-1,
-};
-
-static int
-simcons_init (struct console *cons, char *options)
-{
-	return 0;
-}
-
-static void
-simcons_write (struct console *cons, const char *buf, unsigned count)
-{
-	unsigned long ch;
-
-	while (count-- > 0) {
-		ch = *buf++;
-		ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
-		if (ch == '\n')
-		  ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
-	}
-}
-
-static struct tty_driver *simcons_console_device (struct console *c, int *index)
-{
-	*index = c->index;
-	return hp_simserial_driver;
-}
-
-int simcons_register(void)
-{
-	if (!ia64_platform_is("hpsim"))
-		return 1;
-
-	if (hpsim_cons.flags & CON_ENABLED)
-		return 1;
-
-	register_console(&hpsim_cons);
-	return 0;
-}
diff --git a/arch/ia64/hp/sim/hpsim_irq.c b/arch/ia64/hp/sim/hpsim_irq.c
deleted file mode 100644
index 2f1cc59650ab..000000000000
--- a/arch/ia64/hp/sim/hpsim_irq.c
+++ /dev/null
@@ -1,76 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998-2001 Hewlett-Packard Co
- * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/irq.h>
-
-#include "hpsim_ssc.h"
-
-static unsigned int
-hpsim_irq_startup(struct irq_data *data)
-{
-	return 0;
-}
-
-static void
-hpsim_irq_noop(struct irq_data *data)
-{
-}
-
-static int
-hpsim_set_affinity_noop(struct irq_data *d, const struct cpumask *b, bool f)
-{
-	return 0;
-}
-
-static struct irq_chip irq_type_hp_sim = {
-	.name =			"hpsim",
-	.irq_startup =		hpsim_irq_startup,
-	.irq_shutdown =		hpsim_irq_noop,
-	.irq_enable =		hpsim_irq_noop,
-	.irq_disable =		hpsim_irq_noop,
-	.irq_ack =		hpsim_irq_noop,
-	.irq_set_affinity =	hpsim_set_affinity_noop,
-};
-
-static void hpsim_irq_set_chip(int irq)
-{
-	struct irq_chip *chip = irq_get_chip(irq);
-
-	if (chip == &no_irq_chip)
-		irq_set_chip(irq, &irq_type_hp_sim);
-}
-
-static void hpsim_connect_irq(int intr, int irq)
-{
-	ia64_ssc(intr, irq, 0, 0, SSC_CONNECT_INTERRUPT);
-}
-
-int hpsim_get_irq(int intr)
-{
-	int irq = assign_irq_vector(AUTO_ASSIGN);
-
-	if (irq >= 0) {
-		hpsim_irq_set_chip(irq);
-		irq_set_handler(irq, handle_simple_irq);
-		hpsim_connect_irq(intr, irq);
-	}
-
-	return irq;
-}
-
-void __init
-hpsim_irq_init (void)
-{
-	int i;
-
-	for_each_active_irq(i)
-		hpsim_irq_set_chip(i);
-}
diff --git a/arch/ia64/hp/sim/hpsim_machvec.c b/arch/ia64/hp/sim/hpsim_machvec.c
deleted file mode 100644
index c21419359185..000000000000
--- a/arch/ia64/hp/sim/hpsim_machvec.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#define MACHVEC_PLATFORM_NAME		hpsim
-#define MACHVEC_PLATFORM_HEADER		<asm/machvec_hpsim.h>
-#include <asm/machvec_init.h>
diff --git a/arch/ia64/hp/sim/hpsim_setup.c b/arch/ia64/hp/sim/hpsim_setup.c
deleted file mode 100644
index 41d21d51dc4d..000000000000
--- a/arch/ia64/hp/sim/hpsim_setup.c
+++ /dev/null
@@ -1,41 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
- */
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/kdev_t.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/param.h>
-#include <linux/root_dev.h>
-#include <linux/string.h>
-#include <linux/types.h>
-
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/pal.h>
-#include <asm/machvec.h>
-#include <asm/pgtable.h>
-#include <asm/sal.h>
-#include <asm/hpsim.h>
-
-#include "hpsim_ssc.h"
-
-void
-ia64_ctl_trace (long on)
-{
-	ia64_ssc(on, 0, 0, 0, SSC_CTL_TRACE);
-}
-
-void __init
-hpsim_setup (char **cmdline_p)
-{
-	ROOT_DEV = Root_SDA1;		/* default to first SCSI drive */
-
-	simcons_register();
-}
diff --git a/arch/ia64/hp/sim/hpsim_ssc.h b/arch/ia64/hp/sim/hpsim_ssc.h
deleted file mode 100644
index 6fd97a487811..000000000000
--- a/arch/ia64/hp/sim/hpsim_ssc.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Platform dependent support for HP simulator.
- *
- * Copyright (C) 1998, 1999 Hewlett-Packard Co
- * Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
- */
-#ifndef _IA64_PLATFORM_HPSIM_SSC_H
-#define _IA64_PLATFORM_HPSIM_SSC_H
-
-/* Simulator system calls: */
-
-#define SSC_CONSOLE_INIT		20
-#define SSC_GETCHAR			21
-#define SSC_PUTCHAR			31
-#define SSC_CONNECT_INTERRUPT		58
-#define SSC_GENERATE_INTERRUPT		59
-#define SSC_SET_PERIODIC_INTERRUPT	60
-#define SSC_GET_RTC			65
-#define SSC_EXIT			66
-#define SSC_LOAD_SYMBOLS		69
-#define SSC_GET_TOD			74
-#define SSC_CTL_TRACE			76
-
-#define SSC_NETDEV_PROBE		100
-#define SSC_NETDEV_SEND			101
-#define SSC_NETDEV_RECV			102
-#define SSC_NETDEV_ATTACH		103
-#define SSC_NETDEV_DETACH		104
-
-/*
- * Simulator system call.
- */
-extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
-
-#endif /* _IA64_PLATFORM_HPSIM_SSC_H */
diff --git a/arch/ia64/hp/sim/simeth.c b/arch/ia64/hp/sim/simeth.c
deleted file mode 100644
index f39ef2b4ed72..000000000000
--- a/arch/ia64/hp/sim/simeth.c
+++ /dev/null
@@ -1,510 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Simulated Ethernet Driver
- *
- * Copyright (C) 1999-2001, 2003 Hewlett-Packard Co
- *	Stephane Eranian <eranian@hpl.hp.com>
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/inetdevice.h>
-#include <linux/if_ether.h>
-#include <linux/if_arp.h>
-#include <linux/skbuff.h>
-#include <linux/notifier.h>
-#include <linux/bitops.h>
-#include <asm/irq.h>
-#include <asm/hpsim.h>
-
-#include "hpsim_ssc.h"
-
-#define SIMETH_RECV_MAX	10
-
-/*
- * Maximum possible received frame for Ethernet.
- * We preallocate an sk_buff of that size to avoid costly
- * memcpy for temporary buffer into sk_buff. We do basically
- * what's done in other drivers, like eepro with a ring.
- * The difference is, of course, that we don't have real DMA !!!
- */
-#define SIMETH_FRAME_SIZE	ETH_FRAME_LEN
-
-
-#define NETWORK_INTR			8
-
-struct simeth_local {
-	struct net_device_stats stats;
-	int 			simfd;	 /* descriptor in the simulator */
-};
-
-static int simeth_probe1(void);
-static int simeth_open(struct net_device *dev);
-static int simeth_close(struct net_device *dev);
-static int simeth_tx(struct sk_buff *skb, struct net_device *dev);
-static int simeth_rx(struct net_device *dev);
-static struct net_device_stats *simeth_get_stats(struct net_device *dev);
-static irqreturn_t simeth_interrupt(int irq, void *dev_id);
-static void set_multicast_list(struct net_device *dev);
-static int simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr);
-
-static char *simeth_version="0.3";
-
-/*
- * This variable is used to establish a mapping between the Linux/ia64 kernel
- * and the host linux kernel.
- *
- * As of today, we support only one card, even though most of the code
- * is ready for many more. The mapping is then:
- *	linux/ia64 -> linux/x86
- * 	   eth0    -> eth1
- *
- * In the future, we some string operations, we could easily support up
- * to 10 cards (0-9).
- *
- * The default mapping can be changed on the kernel command line by
- * specifying simeth=ethX (or whatever string you want).
- */
-static char *simeth_device="eth0";	 /* default host interface to use */
-
-
-
-static volatile unsigned int card_count; /* how many cards "found" so far */
-static int simeth_debug;		/* set to 1 to get debug information */
-
-/*
- * Used to catch IFF_UP & IFF_DOWN events
- */
-static struct notifier_block simeth_dev_notifier = {
-	simeth_device_event,
-	NULL
-};
-
-
-/*
- * Function used when using a kernel command line option.
- *
- * Format: simeth=interface_name (like eth0)
- */
-static int __init
-simeth_setup(char *str)
-{
-	simeth_device = str;
-	return 1;
-}
-
-__setup("simeth=", simeth_setup);
-
-/*
- * Function used to probe for simeth devices when not installed
- * as a loadable module
- */
-
-int __init
-simeth_probe (void)
-{
-	int r;
-
-	printk(KERN_INFO "simeth: v%s\n", simeth_version);
-
-	r = simeth_probe1();
-
-	if (r == 0) register_netdevice_notifier(&simeth_dev_notifier);
-
-	return r;
-}
-
-static inline int
-netdev_probe(char *name, unsigned char *ether)
-{
-	return ia64_ssc(__pa(name), __pa(ether), 0,0, SSC_NETDEV_PROBE);
-}
-
-
-static inline int
-netdev_attach(int fd, int irq, unsigned int ipaddr)
-{
-	/* this puts the host interface in the right mode (start interrupting) */
-	return ia64_ssc(fd, ipaddr, 0,0, SSC_NETDEV_ATTACH);
-}
-
-
-static inline int
-netdev_detach(int fd)
-{
-	/*
-	 * inactivate the host interface (don't interrupt anymore) */
-	return ia64_ssc(fd, 0,0,0, SSC_NETDEV_DETACH);
-}
-
-static inline int
-netdev_send(int fd, unsigned char *buf, unsigned int len)
-{
-	return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_SEND);
-}
-
-static inline int
-netdev_read(int fd, unsigned char *buf, unsigned int len)
-{
-	return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_RECV);
-}
-
-static const struct net_device_ops simeth_netdev_ops = {
-	.ndo_open		= simeth_open,
-	.ndo_stop		= simeth_close,
-	.ndo_start_xmit		= simeth_tx,
-	.ndo_get_stats		= simeth_get_stats,
-	.ndo_set_rx_mode	= set_multicast_list, /* not yet used */
-
-};
-
-/*
- * Function shared with module code, so cannot be in init section
- *
- * So far this function "detects" only one card (test_&_set) but could
- * be extended easily.
- *
- * Return:
- * 	- -ENODEV is no device found
- *	- -ENOMEM is no more memory
- *	- 0 otherwise
- */
-static int
-simeth_probe1(void)
-{
-	unsigned char mac_addr[ETH_ALEN];
-	struct simeth_local *local;
-	struct net_device *dev;
-	int fd, err, rc;
-
-	/*
-	 * XXX Fix me
-	 * let's support just one card for now
-	 */
-	if (test_and_set_bit(0, &card_count))
-		return -ENODEV;
-
-	/*
-	 * check with the simulator for the device
-	 */
-	fd = netdev_probe(simeth_device, mac_addr);
-	if (fd == -1)
-		return -ENODEV;
-
-	dev = alloc_etherdev(sizeof(struct simeth_local));
-	if (!dev)
-		return -ENOMEM;
-
-	memcpy(dev->dev_addr, mac_addr, sizeof(mac_addr));
-
-	local = netdev_priv(dev);
-	local->simfd = fd; /* keep track of underlying file descriptor */
-
-	dev->netdev_ops = &simeth_netdev_ops;
-
-	err = register_netdev(dev);
-	if (err) {
-		free_netdev(dev);
-		return err;
-	}
-
-	/*
-	 * attach the interrupt in the simulator, this does enable interrupts
-	 * until a netdev_attach() is called
-	 */
-	if ((rc = hpsim_get_irq(NETWORK_INTR)) < 0)
-		panic("%s: out of interrupt vectors!\n", __func__);
-	dev->irq = rc;
-
-	printk(KERN_INFO "%s: hosteth=%s simfd=%d, HwAddr=%pm, IRQ %d\n",
-	       dev->name, simeth_device, local->simfd, dev->dev_addr, dev->irq);
-
-	return 0;
-}
-
-/*
- * actually binds the device to an interrupt vector
- */
-static int
-simeth_open(struct net_device *dev)
-{
-	if (request_irq(dev->irq, simeth_interrupt, 0, "simeth", dev)) {
-		printk(KERN_WARNING "simeth: unable to get IRQ %d.\n", dev->irq);
-		return -EAGAIN;
-	}
-
-	netif_start_queue(dev);
-
-	return 0;
-}
-
-/* copied from lapbether.c */
-static __inline__ int dev_is_ethdev(struct net_device *dev)
-{
-       return ( dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5));
-}
-
-
-/*
- * Handler for IFF_UP or IFF_DOWN
- *
- * The reason for that is that we don't want to be interrupted when the
- * interface is down. There is no way to unconnect in the simualtor. Instead
- * we use this function to shutdown packet processing in the frame filter
- * in the simulator. Thus no interrupts are generated
- *
- *
- * That's also the place where we pass the IP address of this device to the
- * simulator so that that we can start filtering packets for it
- *
- * There may be a better way of doing this, but I don't know which yet.
- */
-static int
-simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr)
-{
-	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
-	struct simeth_local *local;
-	struct in_device *in_dev;
-	struct in_ifaddr **ifap = NULL;
-	struct in_ifaddr *ifa = NULL;
-	int r;
-
-
-	if ( ! dev ) {
-		printk(KERN_WARNING "simeth_device_event dev=0\n");
-		return NOTIFY_DONE;
-	}
-
-	if (dev_net(dev) != &init_net)
-		return NOTIFY_DONE;
-
-	if ( event != NETDEV_UP && event != NETDEV_DOWN ) return NOTIFY_DONE;
-
-	/*
-	 * Check whether or not it's for an ethernet device
-	 *
-	 * XXX Fixme: This works only as long as we support one
-	 * type of ethernet device.
-	 */
-	if ( !dev_is_ethdev(dev) ) return NOTIFY_DONE;
-
-	if ((in_dev=dev->ip_ptr) != NULL) {
-		for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next)
-			if (strcmp(dev->name, ifa->ifa_label) == 0) break;
-	}
-	if ( ifa == NULL ) {
-		printk(KERN_ERR "simeth_open: can't find device %s's ifa\n", dev->name);
-		return NOTIFY_DONE;
-	}
-
-	printk(KERN_INFO "simeth_device_event: %s ipaddr=0x%x\n",
-	       dev->name, ntohl(ifa->ifa_local));
-
-	/*
-	 * XXX Fix me
-	 * if the device was up, and we're simply reconfiguring it, not sure
-	 * we get DOWN then UP.
-	 */
-
-	local = netdev_priv(dev);
-	/* now do it for real */
-	r = event == NETDEV_UP ?
-		netdev_attach(local->simfd, dev->irq, ntohl(ifa->ifa_local)):
-		netdev_detach(local->simfd);
-
-	printk(KERN_INFO "simeth: netdev_attach/detach: event=%s ->%d\n",
-	       event == NETDEV_UP ? "attach":"detach", r);
-
-	return NOTIFY_DONE;
-}
-
-static int
-simeth_close(struct net_device *dev)
-{
-	netif_stop_queue(dev);
-
-	free_irq(dev->irq, dev);
-
-	return 0;
-}
-
-/*
- * Only used for debug
- */
-static void
-frame_print(unsigned char *from, unsigned char *frame, int len)
-{
-	int i;
-
-	printk("%s: (%d) %02x", from, len, frame[0] & 0xff);
-	for(i=1; i < 6; i++ ) {
-		printk(":%02x", frame[i] &0xff);
-	}
-	printk(" %2x", frame[6] &0xff);
-	for(i=7; i < 12; i++ ) {
-		printk(":%02x", frame[i] &0xff);
-	}
-	printk(" [%02x%02x]\n", frame[12], frame[13]);
-
-	for(i=14; i < len; i++ ) {
-		printk("%02x ", frame[i] &0xff);
-		if ( (i%10)==0) printk("\n");
-	}
-	printk("\n");
-}
-
-
-/*
- * Function used to transmit of frame, very last one on the path before
- * going to the simulator.
- */
-static int
-simeth_tx(struct sk_buff *skb, struct net_device *dev)
-{
-	struct simeth_local *local = netdev_priv(dev);
-
-#if 0
-	/* ensure we have at least ETH_ZLEN bytes (min frame size) */
-	unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
-	/* Where do the extra padding bytes comes from inthe skbuff ? */
-#else
-	/* the real driver in the host system is going to take care of that
-	 * or maybe it's the NIC itself.
-	 */
-	unsigned int length = skb->len;
-#endif
-
-	local->stats.tx_bytes += skb->len;
-	local->stats.tx_packets++;
-
-
-	if (simeth_debug > 5) frame_print("simeth_tx", skb->data, length);
-
-	netdev_send(local->simfd, skb->data, length);
-
-	/*
-	 * we are synchronous on write, so we don't simulate a
-	 * trasnmit complete interrupt, thus we don't need to arm a tx
-	 */
-
-	dev_kfree_skb(skb);
-	return NETDEV_TX_OK;
-}
-
-static inline struct sk_buff *
-make_new_skb(struct net_device *dev)
-{
-	struct sk_buff *nskb;
-
-	/*
-	 * The +2 is used to make sure that the IP header is nicely
-	 * aligned (on 4byte boundary I assume 14+2=16)
-	 */
-	nskb = dev_alloc_skb(SIMETH_FRAME_SIZE + 2);
-	if ( nskb == NULL ) {
-		printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
-		return NULL;
-	}
-
-	skb_reserve(nskb, 2);	/* Align IP on 16 byte boundaries */
-
-	skb_put(nskb,SIMETH_FRAME_SIZE);
-
-	return nskb;
-}
-
-/*
- * called from interrupt handler to process a received frame
- */
-static int
-simeth_rx(struct net_device *dev)
-{
-	struct simeth_local	*local;
-	struct sk_buff		*skb;
-	int			len;
-	int			rcv_count = SIMETH_RECV_MAX;
-
-	local = netdev_priv(dev);
-	/*
-	 * the loop concept has been borrowed from other drivers
-	 * looks to me like it's a throttling thing to avoid pushing to many
-	 * packets at one time into the stack. Making sure we can process them
-	 * upstream and make forward progress overall
-	 */
-	do {
-		if ( (skb=make_new_skb(dev)) == NULL ) {
-			printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
-			local->stats.rx_dropped++;
-			return 0;
-		}
-		/*
-		 * Read only one frame at a time
-		 */
-		len = netdev_read(local->simfd, skb->data, SIMETH_FRAME_SIZE);
-		if ( len == 0 ) {
-			if ( simeth_debug > 0 ) printk(KERN_WARNING "%s: count=%d netdev_read=0\n",
-						       dev->name, SIMETH_RECV_MAX-rcv_count);
-			break;
-		}
-#if 0
-		/*
-		 * XXX Fix me
-		 * Should really do a csum+copy here
-		 */
-		skb_copy_to_linear_data(skb, frame, len);
-#endif
-		skb->protocol = eth_type_trans(skb, dev);
-
-		if ( simeth_debug > 6 ) frame_print("simeth_rx", skb->data, len);
-
-		/*
-		 * push the packet up & trigger software interrupt
-		 */
-		netif_rx(skb);
-
-		local->stats.rx_packets++;
-		local->stats.rx_bytes += len;
-
-	} while ( --rcv_count );
-
-	return len; /* 0 = nothing left to read, otherwise, we can try again */
-}
-
-/*
- * Interrupt handler (Yes, we can do it too !!!)
- */
-static irqreturn_t
-simeth_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-
-	/*
-	 * very simple loop because we get interrupts only when receiving
-	 */
-	while (simeth_rx(dev));
-	return IRQ_HANDLED;
-}
-
-static struct net_device_stats *
-simeth_get_stats(struct net_device *dev)
-{
-	struct simeth_local *local = netdev_priv(dev);
-
-	return &local->stats;
-}
-
-/* fake multicast ability */
-static void
-set_multicast_list(struct net_device *dev)
-{
-	printk(KERN_WARNING "%s: set_multicast_list called\n", dev->name);
-}
-
-__initcall(simeth_probe);
diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c
deleted file mode 100644
index 0a8a74271173..000000000000
--- a/arch/ia64/hp/sim/simscsi.c
+++ /dev/null
@@ -1,373 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Simulated SCSI driver.
- *
- * Copyright (C) 1999, 2001-2003 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- *	Stephane Eranian <eranian@hpl.hp.com>
- *
- * 02/01/15 David Mosberger	Updated for v2.5.1
- * 99/12/18 David Mosberger	Added support for READ10/WRITE10 needed by linux v2.3.33
- */
-#include <linux/blkdev.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/timer.h>
-#include <asm/irq.h>
-#include "hpsim_ssc.h"
-
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_host.h>
-
-#define DEBUG_SIMSCSI	0
-
-#define SIMSCSI_REQ_QUEUE_LEN	64
-#define DEFAULT_SIMSCSI_ROOT	"/var/ski-disks/sd"
-
-/* Simulator system calls: */
-
-#define SSC_OPEN			50
-#define SSC_CLOSE			51
-#define SSC_READ			52
-#define SSC_WRITE			53
-#define SSC_GET_COMPLETION		54
-#define SSC_WAIT_COMPLETION		55
-
-#define SSC_WRITE_ACCESS		2
-#define SSC_READ_ACCESS			1
-
-#if DEBUG_SIMSCSI
-  int simscsi_debug;
-# define DBG	simscsi_debug
-#else
-# define DBG	0
-#endif
-
-static struct Scsi_Host *host;
-
-static void simscsi_interrupt (unsigned long val);
-static DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
-
-struct disk_req {
-	unsigned long addr;
-	unsigned len;
-};
-
-struct disk_stat {
-	int fd;
-	unsigned count;
-};
-
-static int desc[16] = {
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
-};
-
-static struct queue_entry {
-	struct scsi_cmnd *sc;
-} queue[SIMSCSI_REQ_QUEUE_LEN];
-
-static int rd, wr;
-static atomic_t num_reqs = ATOMIC_INIT(0);
-
-/* base name for default disks */
-static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
-
-#define MAX_ROOT_LEN	128
-
-/*
- * used to setup a new base for disk images
- * to use /foo/bar/disk[a-z] as disk images
- * you have to specify simscsi=/foo/bar/disk on the command line
- */
-static int __init
-simscsi_setup (char *s)
-{
-	/* XXX Fix me we may need to strcpy() ? */
-	if (strlen(s) > MAX_ROOT_LEN) {
-		printk(KERN_ERR "simscsi_setup: prefix too long---using default %s\n",
-		       simscsi_root);
-	} else
-		simscsi_root = s;
-	return 1;
-}
-
-__setup("simscsi=", simscsi_setup);
-
-static void
-simscsi_interrupt (unsigned long val)
-{
-	struct scsi_cmnd *sc;
-
-	while ((sc = queue[rd].sc) != NULL) {
-		atomic_dec(&num_reqs);
-		queue[rd].sc = NULL;
-		if (DBG)
-			printk("simscsi_interrupt: done with %u\n",
-			       sc->request->tag);
-		(*sc->scsi_done)(sc);
-		rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
-	}
-}
-
-static int
-simscsi_biosparam (struct scsi_device *sdev, struct block_device *n,
-		sector_t capacity, int ip[])
-{
-	ip[0] = 64;		/* heads */
-	ip[1] = 32;		/* sectors */
-	ip[2] = capacity >> 11;	/* cylinders */
-	return 0;
-}
-
-static void
-simscsi_sg_readwrite (struct scsi_cmnd *sc, int mode, unsigned long offset)
-{
-	int i;
-	struct scatterlist *sl;
-	struct disk_stat stat;
-	struct disk_req req;
-
-	stat.fd = desc[sc->device->id];
-
-	scsi_for_each_sg(sc, sl, scsi_sg_count(sc), i) {
-		req.addr = __pa(sg_virt(sl));
-		req.len  = sl->length;
-		if (DBG)
-			printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
-			       mode == SSC_READ ? "read":"write", req.addr, offset,
-			       scsi_sg_count(sc) - i, sl->length);
-		ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
-		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
-
-		/* should not happen in our case */
-		if (stat.count != req.len) {
-			sc->result = DID_ERROR << 16;
-			return;
-		}
-		offset +=  sl->length;
-	}
-	sc->result = GOOD;
-}
-
-/*
- * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
- * commands.
- * Added 02/26/99 S.Eranian
- */
-static void
-simscsi_readwrite6 (struct scsi_cmnd *sc, int mode)
-{
-	unsigned long offset;
-
-	offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
-	simscsi_sg_readwrite(sc, mode, offset);
-}
-
-static size_t
-simscsi_get_disk_size (int fd)
-{
-	struct disk_stat stat;
-	size_t bit, sectors = 0;
-	struct disk_req req;
-	char buf[512];
-
-	/*
-	 * This is a bit kludgey: the simulator doesn't provide a
-	 * direct way of determining the disk size, so we do a binary
-	 * search, assuming a maximum disk size of 128GB.
-	 */
-	for (bit = (128UL << 30)/512; bit != 0; bit >>= 1) {
-		req.addr = __pa(&buf);
-		req.len = sizeof(buf);
-		ia64_ssc(fd, 1, __pa(&req), ((sectors | bit) - 1)*512, SSC_READ);
-		stat.fd = fd;
-		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
-		if (stat.count == sizeof(buf))
-			sectors |= bit;
-	}
-	return sectors - 1;	/* return last valid sector number */
-}
-
-static void
-simscsi_readwrite10 (struct scsi_cmnd *sc, int mode)
-{
-	unsigned long offset;
-
-	offset = (((unsigned long)sc->cmnd[2] << 24) 
-		| ((unsigned long)sc->cmnd[3] << 16)
-		| ((unsigned long)sc->cmnd[4] <<  8) 
-		| ((unsigned long)sc->cmnd[5] <<  0))*512UL;
-	simscsi_sg_readwrite(sc, mode, offset);
-}
-
-static int
-simscsi_queuecommand_lck (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
-{
-	unsigned int target_id = sc->device->id;
-	char fname[MAX_ROOT_LEN+16];
-	size_t disk_size;
-	char *buf;
-	char localbuf[36];
-#if DEBUG_SIMSCSI
-	register long sp asm ("sp");
-
-	if (DBG)
-		printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%u,sp=%lx,done=%p\n",
-		       target_id, sc->cmnd[0], sc->request->tag, sp, done);
-#endif
-
-	sc->result = DID_BAD_TARGET << 16;
-	sc->scsi_done = done;
-	if (target_id <= 15 && sc->device->lun == 0) {
-		switch (sc->cmnd[0]) {
-		      case INQUIRY:
-			if (scsi_bufflen(sc) < 35) {
-				break;
-			}
-			sprintf (fname, "%s%c", simscsi_root, 'a' + target_id);
-			desc[target_id] = ia64_ssc(__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
-						   0, 0, SSC_OPEN);
-			if (desc[target_id] < 0) {
-				/* disk doesn't exist... */
-				break;
-			}
-			buf = localbuf;
-			buf[0] = 0;	/* magnetic disk */
-			buf[1] = 0;	/* not a removable medium */
-			buf[2] = 2;	/* SCSI-2 compliant device */
-			buf[3] = 2;	/* SCSI-2 response data format */
-			buf[4] = 31;	/* additional length (bytes) */
-			buf[5] = 0;	/* reserved */
-			buf[6] = 0;	/* reserved */
-			buf[7] = 0;	/* various flags */
-			memcpy(buf + 8, "HP      SIMULATED DISK  0.00",  28);
-			scsi_sg_copy_from_buffer(sc, buf, 36);
-			sc->result = GOOD;
-			break;
-
-		      case TEST_UNIT_READY:
-			sc->result = GOOD;
-			break;
-
-		      case READ_6:
-			if (desc[target_id] < 0 )
-				break;
-			simscsi_readwrite6(sc, SSC_READ);
-			break;
-
-		      case READ_10:
-			if (desc[target_id] < 0 )
-				break;
-			simscsi_readwrite10(sc, SSC_READ);
-			break;
-
-		      case WRITE_6:
-			if (desc[target_id] < 0)
-				break;
-			simscsi_readwrite6(sc, SSC_WRITE);
-			break;
-
-		      case WRITE_10:
-			if (desc[target_id] < 0)
-				break;
-			simscsi_readwrite10(sc, SSC_WRITE);
-			break;
-
-		      case READ_CAPACITY:
-			if (desc[target_id] < 0 || scsi_bufflen(sc) < 8) {
-				break;
-			}
-			buf = localbuf;
-			disk_size = simscsi_get_disk_size(desc[target_id]);
-
-			buf[0] = (disk_size >> 24) & 0xff;
-			buf[1] = (disk_size >> 16) & 0xff;
-			buf[2] = (disk_size >>  8) & 0xff;
-			buf[3] = (disk_size >>  0) & 0xff;
-			/* set block size of 512 bytes: */
-			buf[4] = 0;
-			buf[5] = 0;
-			buf[6] = 2;
-			buf[7] = 0;
-			scsi_sg_copy_from_buffer(sc, buf, 8);
-			sc->result = GOOD;
-			break;
-
-		      case MODE_SENSE:
-		      case MODE_SENSE_10:
-			/* sd.c uses this to determine whether disk does write-caching. */
-			scsi_sg_copy_from_buffer(sc, (char *)empty_zero_page,
-						 PAGE_SIZE);
-			sc->result = GOOD;
-			break;
-
-		      case START_STOP:
-			printk(KERN_ERR "START_STOP\n");
-			break;
-
-		      default:
-			panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
-		}
-	}
-	if (sc->result == DID_BAD_TARGET) {
-		sc->result |= DRIVER_SENSE << 24;
-		sc->sense_buffer[0] = 0x70;
-		sc->sense_buffer[2] = 0x00;
-	}
-	if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
-		panic("Attempt to queue command while command is pending!!");
-	}
-	atomic_inc(&num_reqs);
-	queue[wr].sc = sc;
-	wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
-
-	tasklet_schedule(&simscsi_tasklet);
-	return 0;
-}
-
-static DEF_SCSI_QCMD(simscsi_queuecommand)
-
-static int
-simscsi_host_reset (struct scsi_cmnd *sc)
-{
-	printk(KERN_ERR "simscsi_host_reset: not implemented\n");
-	return 0;
-}
-
-static struct scsi_host_template driver_template = {
-	.name			= "simulated SCSI host adapter",
-	.proc_name		= "simscsi",
-	.queuecommand		= simscsi_queuecommand,
-	.eh_host_reset_handler	= simscsi_host_reset,
-	.bios_param		= simscsi_biosparam,
-	.can_queue		= SIMSCSI_REQ_QUEUE_LEN,
-	.this_id		= -1,
-	.sg_tablesize		= SG_ALL,
-	.max_sectors		= 1024,
-	.cmd_per_lun		= SIMSCSI_REQ_QUEUE_LEN,
-	.dma_boundary		= PAGE_SIZE - 1,
-};
-
-static int __init
-simscsi_init(void)
-{
-	int error;
-
-	host = scsi_host_alloc(&driver_template, 0);
-	if (!host)
-		return -ENOMEM;
-
-	error = scsi_add_host(host, NULL);
-	if (error)
-		goto free_host;
-	scsi_scan_host(host);
-	return 0;
-
- free_host:
-	scsi_host_put(host);
-	return error;
-}
-device_initcall(simscsi_init);
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
deleted file mode 100644
index 1a338e541334..000000000000
--- a/arch/ia64/hp/sim/simserial.c
+++ /dev/null
@@ -1,521 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Simulated Serial Driver (fake serial)
- *
- * This driver is mostly used for bringup purposes and will go away.
- * It has a strong dependency on the system console. All outputs
- * are rerouted to the same facility as the one used by printk which, in our
- * case means sys_sim.c console (goes via the simulator).
- *
- * Copyright (C) 1999-2000, 2002-2003 Hewlett-Packard Co
- *	Stephane Eranian <eranian@hpl.hp.com>
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- */
-
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/major.h>
-#include <linux/fcntl.h>
-#include <linux/mm.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/capability.h>
-#include <linux/circ_buf.h>
-#include <linux/console.h>
-#include <linux/irq.h>
-#include <linux/module.h>
-#include <linux/serial.h>
-#include <linux/sysrq.h>
-#include <linux/uaccess.h>
-
-#include <asm/hpsim.h>
-
-#include "hpsim_ssc.h"
-
-#undef SIMSERIAL_DEBUG	/* define this to get some debug information */
-
-#define KEYBOARD_INTR	3	/* must match with simulator! */
-
-#define NR_PORTS	1	/* only one port for now */
-
-struct serial_state {
-	struct tty_port port;
-	struct circ_buf xmit;
-	int irq;
-	int x_char;
-};
-
-static struct serial_state rs_table[NR_PORTS];
-
-struct tty_driver *hp_simserial_driver;
-
-static struct console *console;
-
-static void receive_chars(struct tty_port *port)
-{
-	unsigned char ch;
-	static unsigned char seen_esc = 0;
-
-	while ( (ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR)) ) {
-		if (ch == 27 && seen_esc == 0) {
-			seen_esc = 1;
-			continue;
-		} else if (seen_esc == 1 && ch == 'O') {
-			seen_esc = 2;
-			continue;
-		} else if (seen_esc == 2) {
-			if (ch == 'P') /* F1 */
-				show_state();
-#ifdef CONFIG_MAGIC_SYSRQ
-			if (ch == 'S') { /* F4 */
-				do {
-					ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR);
-				} while (!ch);
-				handle_sysrq(ch);
-			}
-#endif
-			seen_esc = 0;
-			continue;
-		}
-		seen_esc = 0;
-
-		if (tty_insert_flip_char(port, ch, TTY_NORMAL) == 0)
-			break;
-	}
-	tty_flip_buffer_push(port);
-}
-
-/*
- * This is the serial driver's interrupt routine for a single port
- */
-static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
-{
-	struct serial_state *info = dev_id;
-
-	receive_chars(&info->port);
-
-	return IRQ_HANDLED;
-}
-
-/*
- * -------------------------------------------------------------------
- * Here ends the serial interrupt routines.
- * -------------------------------------------------------------------
- */
-
-static int rs_put_char(struct tty_struct *tty, unsigned char ch)
-{
-	struct serial_state *info = tty->driver_data;
-	unsigned long flags;
-
-	if (!info->xmit.buf)
-		return 0;
-
-	local_irq_save(flags);
-	if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
-		local_irq_restore(flags);
-		return 0;
-	}
-	info->xmit.buf[info->xmit.head] = ch;
-	info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
-	local_irq_restore(flags);
-	return 1;
-}
-
-static void transmit_chars(struct tty_struct *tty, struct serial_state *info,
-		int *intr_done)
-{
-	int count;
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	if (info->x_char) {
-		char c = info->x_char;
-
-		console->write(console, &c, 1);
-
-		info->x_char = 0;
-
-		goto out;
-	}
-
-	if (info->xmit.head == info->xmit.tail || tty->stopped) {
-#ifdef SIMSERIAL_DEBUG
-		printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
-		       info->xmit.head, info->xmit.tail, tty->stopped);
-#endif
-		goto out;
-	}
-	/*
-	 * We removed the loop and try to do it in to chunks. We need
-	 * 2 operations maximum because it's a ring buffer.
-	 *
-	 * First from current to tail if possible.
-	 * Then from the beginning of the buffer until necessary
-	 */
-
-	count = min(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
-		    SERIAL_XMIT_SIZE - info->xmit.tail);
-	console->write(console, info->xmit.buf+info->xmit.tail, count);
-
-	info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);
-
-	/*
-	 * We have more at the beginning of the buffer
-	 */
-	count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-	if (count) {
-		console->write(console, info->xmit.buf, count);
-		info->xmit.tail += count;
-	}
-out:
-	local_irq_restore(flags);
-}
-
-static void rs_flush_chars(struct tty_struct *tty)
-{
-	struct serial_state *info = tty->driver_data;
-
-	if (info->xmit.head == info->xmit.tail || tty->stopped ||
-			!info->xmit.buf)
-		return;
-
-	transmit_chars(tty, info, NULL);
-}
-
-static int rs_write(struct tty_struct * tty,
-		    const unsigned char *buf, int count)
-{
-	struct serial_state *info = tty->driver_data;
-	int	c, ret = 0;
-	unsigned long flags;
-
-	if (!info->xmit.buf)
-		return 0;
-
-	local_irq_save(flags);
-	while (1) {
-		c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-		if (count < c)
-			c = count;
-		if (c <= 0) {
-			break;
-		}
-		memcpy(info->xmit.buf + info->xmit.head, buf, c);
-		info->xmit.head = ((info->xmit.head + c) &
-				   (SERIAL_XMIT_SIZE-1));
-		buf += c;
-		count -= c;
-		ret += c;
-	}
-	local_irq_restore(flags);
-	/*
-	 * Hey, we transmit directly from here in our case
-	 */
-	if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) &&
-			!tty->stopped)
-		transmit_chars(tty, info, NULL);
-
-	return ret;
-}
-
-static int rs_write_room(struct tty_struct *tty)
-{
-	struct serial_state *info = tty->driver_data;
-
-	return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static int rs_chars_in_buffer(struct tty_struct *tty)
-{
-	struct serial_state *info = tty->driver_data;
-
-	return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static void rs_flush_buffer(struct tty_struct *tty)
-{
-	struct serial_state *info = tty->driver_data;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	info->xmit.head = info->xmit.tail = 0;
-	local_irq_restore(flags);
-
-	tty_wakeup(tty);
-}
-
-/*
- * This function is used to send a high-priority XON/XOFF character to
- * the device
- */
-static void rs_send_xchar(struct tty_struct *tty, char ch)
-{
-	struct serial_state *info = tty->driver_data;
-
-	info->x_char = ch;
-	if (ch) {
-		/*
-		 * I guess we could call console->write() directly but
-		 * let's do that for now.
-		 */
-		transmit_chars(tty, info, NULL);
-	}
-}
-
-/*
- * ------------------------------------------------------------
- * rs_throttle()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- * ------------------------------------------------------------
- */
-static void rs_throttle(struct tty_struct * tty)
-{
-	if (I_IXOFF(tty))
-		rs_send_xchar(tty, STOP_CHAR(tty));
-
-	printk(KERN_INFO "simrs_throttle called\n");
-}
-
-static void rs_unthrottle(struct tty_struct * tty)
-{
-	struct serial_state *info = tty->driver_data;
-
-	if (I_IXOFF(tty)) {
-		if (info->x_char)
-			info->x_char = 0;
-		else
-			rs_send_xchar(tty, START_CHAR(tty));
-	}
-	printk(KERN_INFO "simrs_unthrottle called\n");
-}
-
-static int rs_setserial(struct tty_struct *tty, struct serial_struct *ss)
-{
-	return 0;
-}
-
-static int rs_getserial(struct tty_struct *tty, struct serial_struct *ss)
-{
-	return 0;
-}
-
-static int rs_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
-{
-	if ((cmd != TIOCSERCONFIG) && (cmd != TIOCMIWAIT)) {
-		if (tty_io_error(tty))
-		    return -EIO;
-	}
-
-	switch (cmd) {
-	case TIOCMIWAIT:
-		return 0;
-	case TIOCSERCONFIG:
-	case TIOCSERGETLSR: /* Get line status register */
-		return -EINVAL;
-	}
-	return -ENOIOCTLCMD;
-}
-
-/*
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- */
-static void shutdown(struct tty_port *port)
-{
-	struct serial_state *info = container_of(port, struct serial_state,
-			port);
-	unsigned long flags;
-
-	local_irq_save(flags);
-	if (info->irq)
-		free_irq(info->irq, info);
-
-	if (info->xmit.buf) {
-		free_page((unsigned long) info->xmit.buf);
-		info->xmit.buf = NULL;
-	}
-	local_irq_restore(flags);
-}
-
-static void rs_close(struct tty_struct *tty, struct file * filp)
-{
-	struct serial_state *info = tty->driver_data;
-
-	tty_port_close(&info->port, tty, filp);
-}
-
-static void rs_hangup(struct tty_struct *tty)
-{
-	struct serial_state *info = tty->driver_data;
-
-	rs_flush_buffer(tty);
-	tty_port_hangup(&info->port);
-}
-
-static int activate(struct tty_port *port, struct tty_struct *tty)
-{
-	struct serial_state *state = container_of(port, struct serial_state,
-			port);
-	unsigned long flags, page;
-	int retval = 0;
-
-	page = get_zeroed_page(GFP_KERNEL);
-	if (!page)
-		return -ENOMEM;
-
-	local_irq_save(flags);
-
-	if (state->xmit.buf)
-		free_page(page);
-	else
-		state->xmit.buf = (unsigned char *) page;
-
-	if (state->irq) {
-		retval = request_irq(state->irq, rs_interrupt_single, 0,
-				"simserial", state);
-		if (retval)
-			goto errout;
-	}
-
-	state->xmit.head = state->xmit.tail = 0;
-errout:
-	local_irq_restore(flags);
-	return retval;
-}
-
-
-/*
- * This routine is called whenever a serial port is opened.  It
- * enables interrupts for a serial port, linking in its async structure into
- * the IRQ chain.   It also performs the serial-specific
- * initialization for the tty structure.
- */
-static int rs_open(struct tty_struct *tty, struct file * filp)
-{
-	struct serial_state *info = rs_table + tty->index;
-	struct tty_port *port = &info->port;
-
-	tty->driver_data = info;
-	port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
-
-	/*
-	 * figure out which console to use (should be one already)
-	 */
-	console = console_drivers;
-	while (console) {
-		if ((console->flags & CON_ENABLED) && console->write) break;
-		console = console->next;
-	}
-
-	return tty_port_open(port, tty, filp);
-}
-
-/*
- * /proc fs routines....
- */
-
-static int rs_proc_show(struct seq_file *m, void *v)
-{
-	int i;
-
-	seq_printf(m, "simserinfo:1.0\n");
-	for (i = 0; i < NR_PORTS; i++)
-		seq_printf(m, "%d: uart:16550 port:3F8 irq:%d\n",
-		       i, rs_table[i].irq);
-	return 0;
-}
-
-static const struct tty_operations hp_ops = {
-	.open = rs_open,
-	.close = rs_close,
-	.write = rs_write,
-	.put_char = rs_put_char,
-	.flush_chars = rs_flush_chars,
-	.write_room = rs_write_room,
-	.chars_in_buffer = rs_chars_in_buffer,
-	.flush_buffer = rs_flush_buffer,
-	.ioctl = rs_ioctl,
-	.throttle = rs_throttle,
-	.unthrottle = rs_unthrottle,
-	.send_xchar = rs_send_xchar,
-	.set_serial = rs_setserial,
-	.get_serial = rs_getserial,
-	.hangup = rs_hangup,
-	.proc_show = rs_proc_show,
-};
-
-static const struct tty_port_operations hp_port_ops = {
-	.activate = activate,
-	.shutdown = shutdown,
-};
-
-static int __init simrs_init(void)
-{
-	struct serial_state *state;
-	int retval;
-
-	if (!ia64_platform_is("hpsim"))
-		return -ENODEV;
-
-	hp_simserial_driver = alloc_tty_driver(NR_PORTS);
-	if (!hp_simserial_driver)
-		return -ENOMEM;
-
-	printk(KERN_INFO "SimSerial driver with no serial options enabled\n");
-
-	/* Initialize the tty_driver structure */
-
-	hp_simserial_driver->driver_name = "simserial";
-	hp_simserial_driver->name = "ttyS";
-	hp_simserial_driver->major = TTY_MAJOR;
-	hp_simserial_driver->minor_start = 64;
-	hp_simserial_driver->type = TTY_DRIVER_TYPE_SERIAL;
-	hp_simserial_driver->subtype = SERIAL_TYPE_NORMAL;
-	hp_simserial_driver->init_termios = tty_std_termios;
-	hp_simserial_driver->init_termios.c_cflag =
-		B9600 | CS8 | CREAD | HUPCL | CLOCAL;
-	hp_simserial_driver->flags = TTY_DRIVER_REAL_RAW;
-	tty_set_operations(hp_simserial_driver, &hp_ops);
-
-	state = rs_table;
-	tty_port_init(&state->port);
-	state->port.ops = &hp_port_ops;
-	state->port.close_delay = 0; /* XXX really 0? */
-
-	retval = hpsim_get_irq(KEYBOARD_INTR);
-	if (retval < 0) {
-		printk(KERN_ERR "%s: out of interrupt vectors!\n",
-				__func__);
-		goto err_free_tty;
-	}
-
-	state->irq = retval;
-
-	/* the port is imaginary */
-	printk(KERN_INFO "ttyS0 at 0x03f8 (irq = %d) is a 16550\n", state->irq);
-
-	tty_port_link_device(&state->port, hp_simserial_driver, 0);
-	retval = tty_register_driver(hp_simserial_driver);
-	if (retval) {
-		printk(KERN_ERR "Couldn't register simserial driver\n");
-		goto err_free_tty;
-	}
-
-	return 0;
-err_free_tty:
-	put_tty_driver(hp_simserial_driver);
-	tty_port_destroy(&state->port);
-	return retval;
-}
-
-#ifndef MODULE
-__initcall(simrs_init);
-#endif
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 80c5ef8f475e..0afb3bc4b4a1 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -37,9 +37,7 @@ const char *acpi_get_sysname (void);
 #else
 static inline const char *acpi_get_sysname (void)
 {
-# if defined (CONFIG_IA64_HP_SIM)
-	return "hpsim";
-# elif defined (CONFIG_IA64_HP_ZX1)
+# if defined (CONFIG_IA64_HP_ZX1)
 	return "hpzx1";
 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
 	return "hpzx1_swiotlb";
diff --git a/arch/ia64/include/asm/hpsim.h b/arch/ia64/include/asm/hpsim.h
deleted file mode 100644
index 00fbd5cc8ab8..000000000000
--- a/arch/ia64/include/asm/hpsim.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASMIA64_HPSIM_H
-#define _ASMIA64_HPSIM_H
-
-#ifndef CONFIG_HP_SIMSERIAL_CONSOLE
-static inline int simcons_register(void) { return 1; }
-#else
-int simcons_register(void);
-#endif
-
-struct tty_driver;
-extern struct tty_driver *hp_simserial_driver;
-
-extern int hpsim_get_irq(int intr);
-void ia64_ctl_trace(long on);
-
-#endif
diff --git a/arch/ia64/include/asm/iosapic.h b/arch/ia64/include/asm/iosapic.h
index f48556cb8afc..a91aeb413e17 100644
--- a/arch/ia64/include/asm/iosapic.h
+++ b/arch/ia64/include/asm/iosapic.h
@@ -52,8 +52,6 @@
 
 #ifndef __ASSEMBLY__
 
-#ifdef CONFIG_IOSAPIC
-
 #define NR_IOSAPICS			256
 
 #define iosapic_pcat_compat_init	ia64_native_iosapic_pcat_compat_init
@@ -103,16 +101,6 @@ extern int __init iosapic_register_platform_intr (u32 int_type,
 #ifdef CONFIG_NUMA
 extern void map_iosapic_to_node (unsigned int, int);
 #endif
-#else
-#define iosapic_system_init(pcat_compat)			do { } while (0)
-#define iosapic_init(address,gsi_base)				(-EINVAL)
-#define iosapic_remove(gsi_base)				(-ENODEV)
-#define iosapic_register_intr(gsi,polarity,trigger)		(gsi)
-#define iosapic_unregister_intr(irq)				do { } while (0)
-#define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger)	do { } while (0)
-#define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
-	polarity,trigger)					(gsi)
-#endif
 
 # endif /* !__ASSEMBLY__ */
 #endif /* __ASM_IA64_IOSAPIC_H */
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index f426a9829595..5a9a8af79308 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -16,7 +16,6 @@
 struct device;
 
 typedef void ia64_mv_setup_t (char **);
-typedef void ia64_mv_irq_init_t (void);
 typedef void ia64_mv_dma_init (void);
 typedef const struct dma_map_ops *ia64_mv_dma_get_ops(struct device *);
 
@@ -27,9 +26,7 @@ machvec_noop (void)
 
 extern void machvec_setup (char **);
 
-# if defined (CONFIG_IA64_HP_SIM)
-#  include <asm/machvec_hpsim.h>
-# elif defined (CONFIG_IA64_DIG)
+# if defined (CONFIG_IA64_DIG)
 #  include <asm/machvec_dig.h>
 # elif defined(CONFIG_IA64_DIG_VTD)
 #  include <asm/machvec_dig_vtd.h>
@@ -46,7 +43,6 @@ extern void machvec_setup (char **);
 # else
 #  define ia64_platform_name	ia64_mv.name
 #  define platform_setup	ia64_mv.setup
-#  define platform_irq_init	ia64_mv.irq_init
 #  define platform_dma_init		ia64_mv.dma_init
 #  define platform_dma_get_ops		ia64_mv.dma_get_ops
 # endif
@@ -59,7 +55,6 @@ extern void machvec_setup (char **);
 struct ia64_machine_vector {
 	const char *name;
 	ia64_mv_setup_t *setup;
-	ia64_mv_irq_init_t *irq_init;
 	ia64_mv_dma_init *dma_init;
 	ia64_mv_dma_get_ops *dma_get_ops;
 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
@@ -68,7 +63,6 @@ struct ia64_machine_vector {
 {						\
 	#name,					\
 	platform_setup,				\
-	platform_irq_init,			\
 	platform_dma_init,			\
 	platform_dma_get_ops,			\
 }
@@ -91,9 +85,6 @@ extern const struct dma_map_ops *dma_get_ops(struct device *);
 #ifndef platform_setup
 # define platform_setup			machvec_setup
 #endif
-#ifndef platform_irq_init
-# define platform_irq_init		machvec_noop
-#endif
 #ifndef platform_dma_init
 # define platform_dma_init		swiotlb_dma_init
 #endif
diff --git a/arch/ia64/include/asm/machvec_hpsim.h b/arch/ia64/include/asm/machvec_hpsim.h
deleted file mode 100644
index 056f8405822e..000000000000
--- a/arch/ia64/include/asm/machvec_hpsim.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_HPSIM_h
-#define _ASM_IA64_MACHVEC_HPSIM_h
-
-extern ia64_mv_setup_t hpsim_setup;
-extern ia64_mv_irq_init_t hpsim_irq_init;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name	"hpsim"
-#define platform_setup		hpsim_setup
-#define platform_irq_init	hpsim_irq_init
-
-#endif /* _ASM_IA64_MACHVEC_HPSIM_h */
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 4ba05140b249..3ada440ff893 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -12,13 +12,12 @@ extra-y	:= head.o vmlinux.lds
 obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o	\
 	 irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o		\
 	 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
-	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o
+	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o
 
 obj-$(CONFIG_ACPI)		+= acpi.o acpi-ext.o
 obj-$(CONFIG_IA64_BRL_EMU)	+= brl_emu.o
 
 obj-$(CONFIG_IA64_PALINFO)	+= palinfo.o
-obj-$(CONFIG_IOSAPIC)		+= iosapic.o
 obj-$(CONFIG_MODULES)		+= module.o
 obj-$(CONFIG_SMP)		+= smp.o smpboot.o
 obj-$(CONFIG_NUMA)		+= numa.o
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 1c81ec752b04..e3874734b149 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -53,7 +53,6 @@
 #define IRQ_USED		(1)
 #define IRQ_RSVD		(2)
 
-/* These can be overridden in platform_irq_init */
 int ia64_first_device_vector = IA64_DEF_FIRST_DEVICE_VECTOR;
 int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR;
 
@@ -648,7 +647,6 @@ init_IRQ (void)
 #ifdef CONFIG_PERFMON
 	pfm_init_percpu();
 #endif
-	platform_irq_init();
 }
 
 void
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 4dc74500eac5..42ef03ce2fd4 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -63,7 +63,6 @@
 #include <asm/smp.h>
 #include <asm/tlbflush.h>
 #include <asm/unistd.h>
-#include <asm/hpsim.h>
 
 #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
 # error "struct cpuinfo_ia64 too big!"
@@ -461,16 +460,11 @@ io_port_init (void)
 static inline int __init
 early_console_setup (char *cmdline)
 {
-	int earlycons = 0;
-
 #ifdef CONFIG_EFI_PCDP
 	if (!efi_setup_pcdp_console(cmdline))
-		earlycons++;
+		return 0;
 #endif
-	if (!simcons_register())
-		earlycons++;
-
-	return (earlycons) ? 0 : -1;
+	return -1;
 }
 
 static inline void
@@ -608,9 +602,6 @@ setup_arch (char **cmdline_p)
 		ia64_mca_init();
 
 	platform_setup(cmdline_p);
-#ifndef CONFIG_IA64_HP_SIM
-	check_sal_cache_flush();
-#endif
 	paging_init();
 
 	clear_sched_clock_stable();
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 18/28] ia64: remove CONFIG_PCI ifdefs
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (15 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 17/28] ia64: remove the hpsim platform Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13 21:07   ` Vaden, Tom (HPE Server OS Architecture)
  2019-08-13  7:25 ` [PATCH 19/28] ia64: remove CONFIG_ACPI ifdefs Christoph Hellwig
                   ` (9 subsequent siblings)
  26 siblings, 1 reply; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

Now that hpsim support is gone, CONFIG_PCI is forced on for ia64, and
we can remove a few ifdefs for it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/Makefile              |  2 +-
 arch/ia64/hp/common/sba_iommu.c | 10 +---------
 arch/ia64/include/asm/dma.h     |  6 +-----
 arch/ia64/kernel/sys_ia64.c     | 18 ------------------
 arch/ia64/mm/init.c             |  2 --
 5 files changed, 3 insertions(+), 35 deletions(-)

diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 8b866fc1f9cb..c06802799659 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -57,7 +57,7 @@ core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
 core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
 core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
 
-drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
+drivers-y			+= arch/ia64/pci/
 drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
 drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
 drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 3d24cc43385b..18321ce8bfa0 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -251,12 +251,8 @@ static SBA_INLINE void sba_free_range(struct ioc *, dma_addr_t, size_t);
 static u64 prefetch_spill_page;
 #endif
 
-#ifdef CONFIG_PCI
-# define GET_IOC(dev)	((dev_is_pci(dev))						\
+#define GET_IOC(dev)	((dev_is_pci(dev))						\
 			 ? ((struct ioc *) PCI_CONTROLLER(to_pci_dev(dev))->iommu) : NULL)
-#else
-# define GET_IOC(dev)	NULL
-#endif
 
 /*
 ** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
@@ -1741,9 +1737,7 @@ ioc_sac_init(struct ioc *ioc)
 	controller->iommu = ioc;
 	sac->sysdata = controller;
 	sac->dma_mask = 0xFFFFFFFFUL;
-#ifdef CONFIG_PCI
 	sac->dev.bus = &pci_bus_type;
-#endif
 	ioc->sac_only_dev = sac;
 }
 
@@ -2121,13 +2115,11 @@ sba_init(void)
 	}
 #endif
 
-#ifdef CONFIG_PCI
 	{
 		struct pci_bus *b = NULL;
 		while ((b = pci_find_next_bus(b)) != NULL)
 			sba_connect_bus(b);
 	}
-#endif
 
 #ifdef CONFIG_PROC_FS
 	ioc_proc_init();
diff --git a/arch/ia64/include/asm/dma.h b/arch/ia64/include/asm/dma.h
index 23604d6a2cb2..59625e9c1f9c 100644
--- a/arch/ia64/include/asm/dma.h
+++ b/arch/ia64/include/asm/dma.h
@@ -12,11 +12,7 @@
 
 extern unsigned long MAX_DMA_ADDRESS;
 
-#ifdef CONFIG_PCI
-  extern int isa_dma_bridge_buggy;
-#else
-# define isa_dma_bridge_buggy 	(0)
-#endif
+extern int isa_dma_bridge_buggy;
 
 #define free_dma(x)
 
diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
index 9ebe1d633abc..e14db25146c2 100644
--- a/arch/ia64/kernel/sys_ia64.c
+++ b/arch/ia64/kernel/sys_ia64.c
@@ -166,21 +166,3 @@ ia64_mremap (unsigned long addr, unsigned long old_len, unsigned long new_len, u
 		force_successful_syscall_return();
 	return addr;
 }
-
-#ifndef CONFIG_PCI
-
-asmlinkage long
-sys_pciconfig_read (unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len,
-		    void *buf)
-{
-	return -ENOSYS;
-}
-
-asmlinkage long
-sys_pciconfig_write (unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len,
-		     void *buf)
-{
-	return -ENOSYS;
-}
-
-#endif /* CONFIG_PCI */
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index aae75fd7b810..9a4a16439900 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -632,14 +632,12 @@ mem_init (void)
 	BUG_ON(PTRS_PER_PMD * sizeof(pmd_t) != PAGE_SIZE);
 	BUG_ON(PTRS_PER_PTE * sizeof(pte_t) != PAGE_SIZE);
 
-#ifdef CONFIG_PCI
 	/*
 	 * This needs to be called _after_ the command line has been parsed but _before_
 	 * any drivers that may need the PCI DMA interface are initialized or bootmem has
 	 * been freed.
 	 */
 	platform_dma_init();
-#endif
 
 #ifdef CONFIG_FLATMEM
 	BUG_ON(!mem_map);
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 19/28] ia64: remove CONFIG_ACPI ifdefs
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (16 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 18/28] ia64: remove CONFIG_PCI ifdefs Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13 21:07   ` Vaden, Tom (HPE Server OS Architecture)
  2019-08-13  7:25 ` [PATCH 20/28] ia64: remove the zx1 swiotlb machvec Christoph Hellwig
                   ` (8 subsequent siblings)
  26 siblings, 1 reply; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

Now that hpsim support is gone, CONFIG_ACPI is forced on for ia64, and
we can remove a few ifdefs for it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/include/asm/acpi.h |  4 ++--
 arch/ia64/kernel/Makefile    |  4 ++--
 arch/ia64/kernel/iosapic.c   |  2 --
 arch/ia64/kernel/irq_ia64.c  |  2 --
 arch/ia64/kernel/mca.c       | 18 ------------------
 arch/ia64/kernel/setup.c     | 10 ++++------
 arch/ia64/kernel/topology.c  |  4 ----
 7 files changed, 8 insertions(+), 36 deletions(-)

diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 0afb3bc4b4a1..01c1c269aa13 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -17,7 +17,7 @@
 #include <linux/numa.h>
 #include <asm/numa.h>
 
-#ifdef	CONFIG_ACPI
+
 extern int acpi_lapic;
 #define acpi_disabled 0	/* ACPI always enabled on IA64 */
 #define acpi_noirq 0	/* ACPI always enabled on IA64 */
@@ -28,7 +28,7 @@ static inline bool acpi_has_cpu_in_madt(void)
 {
 	return !!acpi_lapic;
 }
-#endif
+
 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
 static inline void disable_acpi(void) { }
 
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 3ada440ff893..dbde36702cf2 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -12,9 +12,9 @@ extra-y	:= head.o vmlinux.lds
 obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o	\
 	 irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o		\
 	 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
-	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o
+	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o acpi.o \
+	 acpi-ext.o
 
-obj-$(CONFIG_ACPI)		+= acpi.o acpi-ext.o
 obj-$(CONFIG_IA64_BRL_EMU)	+= brl_emu.o
 
 obj-$(CONFIG_IA64_PALINFO)	+= palinfo.o
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 9e49fd006859..2d25958a7ed7 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -643,10 +643,8 @@ get_target_cpu (unsigned int gsi, int irq)
 	if (!cpu_online(smp_processor_id()))
 		return cpu_physical_id(smp_processor_id());
 
-#ifdef CONFIG_ACPI
 	if (cpe_vector > 0 && irq_to_vector(irq) == IA64_CPEP_VECTOR)
 		return get_cpei_target_cpu();
-#endif
 
 #ifdef CONFIG_NUMA
 	{
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index e3874734b149..b989731bbeac 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -633,9 +633,7 @@ ia64_native_register_ipi(void)
 void __init
 init_IRQ (void)
 {
-#ifdef CONFIG_ACPI
 	acpi_boot_init();
-#endif
 	ia64_register_ipi();
 	register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL);
 #ifdef CONFIG_SMP
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index f72b05fe918b..a7f05883935b 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -149,9 +149,7 @@ static ia64_mc_info_t		ia64_mc_info;
 #define CPE_HISTORY_LENGTH    5
 #define CMC_HISTORY_LENGTH    5
 
-#ifdef CONFIG_ACPI
 static struct timer_list cpe_poll_timer;
-#endif
 static struct timer_list cmc_poll_timer;
 /*
  * This variable tells whether we are currently in polling mode.
@@ -532,8 +530,6 @@ int mca_recover_range(unsigned long addr)
 }
 EXPORT_SYMBOL_GPL(mca_recover_range);
 
-#ifdef CONFIG_ACPI
-
 int cpe_vector = -1;
 int ia64_cpe_irq = -1;
 
@@ -595,9 +591,6 @@ ia64_mca_cpe_int_handler (int cpe_irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-#endif /* CONFIG_ACPI */
-
-#ifdef CONFIG_ACPI
 /*
  * ia64_mca_register_cpev
  *
@@ -625,7 +618,6 @@ ia64_mca_register_cpev (int cpev)
 	IA64_MCA_DEBUG("%s: corrected platform error "
 		       "vector %#x registered\n", __func__, cpev);
 }
-#endif /* CONFIG_ACPI */
 
 /*
  * ia64_mca_cmc_vector_setup
@@ -1540,8 +1532,6 @@ ia64_mca_cmc_poll (struct timer_list *unused)
  * Outputs
  * 	handled
  */
-#ifdef CONFIG_ACPI
-
 static irqreturn_t
 ia64_mca_cpe_int_caller(int cpe_irq, void *arg)
 {
@@ -1604,8 +1594,6 @@ ia64_mca_cpe_poll (struct timer_list *unused)
 							IA64_IPI_DM_INT, 0);
 }
 
-#endif /* CONFIG_ACPI */
-
 static int
 default_monarch_init_process(struct notifier_block *self, unsigned long val, void *data)
 {
@@ -1799,7 +1787,6 @@ static struct irqaction mca_wkup_irqaction = {
 	.name =		"mca_wkup"
 };
 
-#ifdef CONFIG_ACPI
 static struct irqaction mca_cpe_irqaction = {
 	.handler =	ia64_mca_cpe_int_handler,
 	.name =		"cpe_hndlr"
@@ -1809,7 +1796,6 @@ static struct irqaction mca_cpep_irqaction = {
 	.handler =	ia64_mca_cpe_int_caller,
 	.name =		"cpe_poll"
 };
-#endif /* CONFIG_ACPI */
 
 /* Minimal format of the MCA/INIT stacks.  The pseudo processes that run on
  * these stacks can never sleep, they cannot return from the kernel to user
@@ -2081,10 +2067,8 @@ void __init ia64_mca_irq_init(void)
 	/* Setup the MCA wakeup interrupt vector */
 	register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction);
 
-#ifdef CONFIG_ACPI
 	/* Setup the CPEI/P handler */
 	register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction);
-#endif
 }
 
 /*
@@ -2112,7 +2096,6 @@ ia64_mca_late_init(void)
 			  ia64_mca_cpu_online, NULL);
 	IA64_MCA_DEBUG("%s: CMCI/P setup and enabled.\n", __func__);
 
-#ifdef CONFIG_ACPI
 	/* Setup the CPEI/P vector and handler */
 	cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
 	timer_setup(&cpe_poll_timer, ia64_mca_cpe_poll, 0);
@@ -2143,7 +2126,6 @@ ia64_mca_late_init(void)
 			IA64_MCA_DEBUG("%s: CPEP setup and enabled.\n", __func__);
 		}
 	}
-#endif
 
 	return 0;
 }
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 42ef03ce2fd4..8d47836d932c 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -537,21 +537,19 @@ setup_arch (char **cmdline_p)
 	if (early_console_setup(*cmdline_p) == 0)
 		mark_bsp_online();
 
-#ifdef CONFIG_ACPI
 	/* Initialize the ACPI boot-time table parser */
 	acpi_table_init();
 	early_acpi_boot_init();
-# ifdef CONFIG_ACPI_NUMA
+#ifdef CONFIG_ACPI_NUMA
 	acpi_numa_init();
 	acpi_numa_fixup();
-#  ifdef CONFIG_ACPI_HOTPLUG_CPU
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
 	prefill_possible_map();
-#  endif
+#endif
 	per_cpu_scan_finalize((cpumask_weight(&early_cpu_possible_map) == 0 ?
 		32 : cpumask_weight(&early_cpu_possible_map)),
 		additional_cpus > 0 ? additional_cpus : 0);
-# endif
-#endif /* CONFIG_APCI_BOOT */
+#endif /* CONFIG_ACPI_NUMA */
 
 #ifdef CONFIG_SMP
 	smp_build_cpu_map();
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index e311ee13e61d..09fc385c2acd 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -42,7 +42,6 @@ EXPORT_SYMBOL_GPL(arch_fix_phys_package_id);
 #ifdef CONFIG_HOTPLUG_CPU
 int __ref arch_register_cpu(int num)
 {
-#ifdef CONFIG_ACPI
 	/*
 	 * If CPEI can be re-targeted or if this is not
 	 * CPEI target, then it is hotpluggable
@@ -50,7 +49,6 @@ int __ref arch_register_cpu(int num)
 	if (can_cpei_retarget() || !is_cpu_cpei_target(num))
 		sysfs_cpus[num].cpu.hotpluggable = 1;
 	map_cpu_to_node(num, node_cpuid[num].nid);
-#endif
 	return register_cpu(&sysfs_cpus[num].cpu, num);
 }
 EXPORT_SYMBOL(arch_register_cpu);
@@ -58,9 +56,7 @@ EXPORT_SYMBOL(arch_register_cpu);
 void __ref arch_unregister_cpu(int num)
 {
 	unregister_cpu(&sysfs_cpus[num].cpu);
-#ifdef CONFIG_ACPI
 	unmap_cpu_from_node(num, cpu_to_node(num));
-#endif
 }
 EXPORT_SYMBOL(arch_unregister_cpu);
 #else
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 20/28] ia64: remove the zx1 swiotlb machvec
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (17 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 19/28] ia64: remove CONFIG_ACPI ifdefs Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 21/28] ia64: remove the SGI UV simulator support Christoph Hellwig
                   ` (7 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The aim of this machvec is to support devices with < 32-bit dma
masks.  But given that ia64 only has a ZONE_DMA32 and not a ZONE_DMA
that isn't supported by swiotlb either.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 .../admin-guide/kernel-parameters.txt         |  2 +-
 arch/ia64/Kconfig                             | 13 +---
 arch/ia64/Kconfig.debug                       |  2 +-
 arch/ia64/Makefile                            |  2 -
 arch/ia64/hp/common/Makefile                  |  2 -
 arch/ia64/hp/common/hwsw_iommu.c              | 60 -------------------
 arch/ia64/hp/common/sba_iommu.c               | 15 +----
 arch/ia64/hp/zx1/Makefile                     |  2 +-
 arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c      |  3 -
 arch/ia64/include/asm/acpi.h                  |  2 -
 arch/ia64/include/asm/dma-mapping.h           |  8 +--
 arch/ia64/include/asm/machvec.h               | 15 -----
 arch/ia64/include/asm/machvec_hpzx1_swiotlb.h | 20 -------
 arch/ia64/kernel/dma-mapping.c                |  6 --
 drivers/char/agp/Kconfig                      |  2 +-
 15 files changed, 7 insertions(+), 147 deletions(-)
 delete mode 100644 arch/ia64/hp/common/hwsw_iommu.c
 delete mode 100644 arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c
 delete mode 100644 arch/ia64/include/asm/machvec_hpzx1_swiotlb.h

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 47d981a86e2f..33ab47447ef1 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2373,7 +2373,7 @@
 
 	machvec=	[IA-64] Force the use of a particular machine-vector
 			(machvec) in a generic kernel.
-			Example: machvec=hpzx1_swiotlb
+			Example: machvec=hpzx1
 
 	machtype=	[Loongson] Share the same kernel image file between different
 			 yeeloong laptop.
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 63db7a5378ac..a42ab41ee8ab 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -138,7 +138,6 @@ config IA64_GENERIC
 	  DIG-compliant		For DIG ("Developer's Interface Guide") compliant systems
 	  DIG+Intel+IOMMU	For DIG systems with Intel IOMMU
 	  HP-zx1/sx1000		For HP systems
-	  HP-zx1/sx1000+swiotlb	For HP systems with (broken) DMA-constrained devices.
 	  SGI-UV		For SGI UV systems
 
 	  If you don't know what to do, choose "generic".
@@ -158,16 +157,6 @@ config IA64_HP_ZX1
 	  Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 	  support for the HP I/O MMU.
 
-config IA64_HP_ZX1_SWIOTLB
-	bool "HP-zx1/sx1000 with software I/O TLB"
-	select SWIOTLB
-	help
-	  Build a kernel that runs on HP zx1 and sx1000 systems even when they
-	  have broken PCI devices which cannot DMA to full 32 bits.  Apart
-	  from support for the HP I/O MMU, this includes support for the software
-	  I/O TLB, which allows supporting the broken devices at the expense of
-	  wasting some kernel memory (about 2MB by default).
-
 config IA64_SGI_UV
 	bool "SGI-UV"
 	select NUMA
@@ -350,7 +339,7 @@ config ARCH_SPARSEMEM_ENABLE
 	select SPARSEMEM_VMEMMAP_ENABLE
 
 config ARCH_DISCONTIGMEM_DEFAULT
-	def_bool y if (IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
+	def_bool y if (IA64_GENERIC || IA64_HP_ZX1)
 	depends on ARCH_DISCONTIGMEM_ENABLE
 
 config NUMA
diff --git a/arch/ia64/Kconfig.debug b/arch/ia64/Kconfig.debug
index 793a613c54ab..abf8d04ab6ab 100644
--- a/arch/ia64/Kconfig.debug
+++ b/arch/ia64/Kconfig.debug
@@ -14,7 +14,7 @@ config IA64_GRANULE_16MB
 
 config IA64_GRANULE_64MB
 	bool "64MB"
-	depends on !(IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
+	depends on !(IA64_GENERIC || IA64_HP_ZX1)
 
 endchoice
 
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index c06802799659..0b3647efde5d 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -54,12 +54,10 @@ core-$(CONFIG_IA64_DIG) 	+= arch/ia64/dig/
 core-$(CONFIG_IA64_DIG_VTD) 	+= arch/ia64/dig/
 core-$(CONFIG_IA64_GENERIC) 	+= arch/ia64/dig/
 core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
-core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
 core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
 
 drivers-y			+= arch/ia64/pci/
 drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
-drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
 drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/
 drivers-$(CONFIG_OPROFILE)	+= arch/ia64/oprofile/
 
diff --git a/arch/ia64/hp/common/Makefile b/arch/ia64/hp/common/Makefile
index 6026308f9a62..47c8f6ecb6f4 100644
--- a/arch/ia64/hp/common/Makefile
+++ b/arch/ia64/hp/common/Makefile
@@ -7,6 +7,4 @@
 #
 
 obj-y := sba_iommu.o
-obj-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += hwsw_iommu.o
-obj-$(CONFIG_IA64_GENERIC) += hwsw_iommu.o
 obj-$(CONFIG_IA64_HP_AML_NFW) += aml_nfw.o
diff --git a/arch/ia64/hp/common/hwsw_iommu.c b/arch/ia64/hp/common/hwsw_iommu.c
deleted file mode 100644
index 8840ed97712f..000000000000
--- a/arch/ia64/hp/common/hwsw_iommu.c
+++ /dev/null
@@ -1,60 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2004 Hewlett-Packard Development Company, L.P.
- *   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
- *
- * This is a pseudo I/O MMU which dispatches to the hardware I/O MMU
- * whenever possible.  We assume that the hardware I/O MMU requires
- * full 32-bit addressability, as is the case, e.g., for HP zx1-based
- * systems (there, the I/O MMU window is mapped at 3-4GB).  If a
- * device doesn't provide full 32-bit addressability, we fall back on
- * the sw I/O TLB.  This is good enough to let us support broken
- * hardware such as soundcards which have a DMA engine that can
- * address only 28 bits.
- */
-
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/swiotlb.h>
-#include <linux/export.h>
-#include <asm/machvec.h>
-
-extern const struct dma_map_ops sba_dma_ops;
-
-/* swiotlb declarations & definitions: */
-extern int swiotlb_late_init_with_default_size (size_t size);
-
-/*
- * Note: we need to make the determination of whether or not to use
- * the sw I/O TLB based purely on the device structure.  Anything else
- * would be unreliable or would be too intrusive.
- */
-static inline int use_swiotlb(struct device *dev)
-{
-	return dev && dev->dma_mask &&
-		!sba_dma_ops.dma_supported(dev, *dev->dma_mask);
-}
-
-const struct dma_map_ops *hwsw_dma_get_ops(struct device *dev)
-{
-	if (use_swiotlb(dev))
-		return NULL;
-	return &sba_dma_ops;
-}
-EXPORT_SYMBOL(hwsw_dma_get_ops);
-
-void __init
-hwsw_init (void)
-{
-	/* default to a smallish 2MB sw I/O TLB */
-	if (swiotlb_late_init_with_default_size (2 * (1<<20)) != 0) {
-#ifdef CONFIG_IA64_GENERIC
-		/* Better to have normal DMA than panic */
-		printk(KERN_WARNING "%s: Failed to initialize software I/O TLB,"
-		       " reverting to hpzx1 platform vector\n", __func__);
-		machvec_init("hpzx1");
-#else
-		panic("Unable to initialize software I/O TLB services");
-#endif
-	}
-}
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 18321ce8bfa0..215fa688b729 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -2059,7 +2059,7 @@ arch_initcall(acpi_sba_ioc_init_acpi);
 static int __init
 sba_init(void)
 {
-	if (!ia64_platform_is("hpzx1") && !ia64_platform_is("hpzx1_swiotlb"))
+	if (!ia64_platform_is("hpzx1"))
 		return 0;
 
 #if defined(CONFIG_IA64_GENERIC)
@@ -2102,19 +2102,6 @@ sba_init(void)
 		return 0;
 	}
 
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_HP_ZX1_SWIOTLB)
-	/*
-	 * hpzx1_swiotlb needs to have a fairly small swiotlb bounce
-	 * buffer setup to support devices with smaller DMA masks than
-	 * sba_iommu can handle.
-	 */
-	if (ia64_platform_is("hpzx1_swiotlb")) {
-		extern void hwsw_init(void);
-
-		hwsw_init();
-	}
-#endif
-
 	{
 		struct pci_bus *b = NULL;
 		while ((b = pci_find_next_bus(b)) != NULL)
diff --git a/arch/ia64/hp/zx1/Makefile b/arch/ia64/hp/zx1/Makefile
index 46b37d820b59..bea44b4ed173 100644
--- a/arch/ia64/hp/zx1/Makefile
+++ b/arch/ia64/hp/zx1/Makefile
@@ -6,4 +6,4 @@
 # Copyright (C) Alex Williamson (alex_williamson@hp.com)
 #
 
-obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o hpzx1_swiotlb_machvec.o
+obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o
diff --git a/arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c b/arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c
deleted file mode 100644
index 4392a96b3c58..000000000000
--- a/arch/ia64/hp/zx1/hpzx1_swiotlb_machvec.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#define MACHVEC_PLATFORM_NAME		hpzx1_swiotlb
-#define MACHVEC_PLATFORM_HEADER		<asm/machvec_hpzx1_swiotlb.h>
-#include <asm/machvec_init.h>
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 01c1c269aa13..9e563df73038 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -39,8 +39,6 @@ static inline const char *acpi_get_sysname (void)
 {
 # if defined (CONFIG_IA64_HP_ZX1)
 	return "hpzx1";
-# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
-	return "hpzx1_swiotlb";
 # elif defined (CONFIG_IA64_SGI_UV)
 	return "uv";
 # elif defined (CONFIG_IA64_DIG)
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
index f7ec71e4001e..a5d9d788eede 100644
--- a/arch/ia64/include/asm/dma-mapping.h
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -6,17 +6,11 @@
  * Copyright (C) 2003-2004 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
-#include <asm/machvec.h>
-#include <linux/scatterlist.h>
-#include <linux/dma-debug.h>
-
 extern const struct dma_map_ops *dma_ops;
-extern struct ia64_machine_vector ia64_mv;
-extern void set_iommu_machvec(void);
 
 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
 {
-	return platform_dma_get_ops(NULL);
+	return dma_ops;
 }
 
 #endif /* _ASM_IA64_DMA_MAPPING_H */
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index 5a9a8af79308..fa867e980d87 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -17,12 +17,6 @@ struct device;
 
 typedef void ia64_mv_setup_t (char **);
 typedef void ia64_mv_dma_init (void);
-typedef const struct dma_map_ops *ia64_mv_dma_get_ops(struct device *);
-
-static inline void
-machvec_noop (void)
-{
-}
 
 extern void machvec_setup (char **);
 
@@ -32,8 +26,6 @@ extern void machvec_setup (char **);
 #  include <asm/machvec_dig_vtd.h>
 # elif defined (CONFIG_IA64_HP_ZX1)
 #  include <asm/machvec_hpzx1.h>
-# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
-#  include <asm/machvec_hpzx1_swiotlb.h>
 # elif defined (CONFIG_IA64_SGI_UV)
 #  include <asm/machvec_uv.h>
 # elif defined (CONFIG_IA64_GENERIC)
@@ -44,7 +36,6 @@ extern void machvec_setup (char **);
 #  define ia64_platform_name	ia64_mv.name
 #  define platform_setup	ia64_mv.setup
 #  define platform_dma_init		ia64_mv.dma_init
-#  define platform_dma_get_ops		ia64_mv.dma_get_ops
 # endif
 
 /* __attribute__((__aligned__(16))) is required to make size of the
@@ -56,7 +47,6 @@ struct ia64_machine_vector {
 	const char *name;
 	ia64_mv_setup_t *setup;
 	ia64_mv_dma_init *dma_init;
-	ia64_mv_dma_get_ops *dma_get_ops;
 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
 
 #define MACHVEC_INIT(name)			\
@@ -64,7 +54,6 @@ struct ia64_machine_vector {
 	#name,					\
 	platform_setup,				\
 	platform_dma_init,			\
-	platform_dma_get_ops,			\
 }
 
 extern struct ia64_machine_vector ia64_mv;
@@ -76,7 +65,6 @@ extern void machvec_init_from_cmdline(const char *cmdline);
 # endif /* CONFIG_IA64_GENERIC */
 
 extern void swiotlb_dma_init(void);
-extern const struct dma_map_ops *dma_get_ops(struct device *);
 
 /*
  * Define default versions so we can extend machvec for new platforms without having
@@ -88,8 +76,5 @@ extern const struct dma_map_ops *dma_get_ops(struct device *);
 #ifndef platform_dma_init
 # define platform_dma_init		swiotlb_dma_init
 #endif
-#ifndef platform_dma_get_ops
-# define platform_dma_get_ops		dma_get_ops
-#endif
 
 #endif /* _ASM_IA64_MACHVEC_H */
diff --git a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h b/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
deleted file mode 100644
index 5aec6a008c61..000000000000
--- a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h
-#define _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h
-
-extern ia64_mv_setup_t				dig_setup;
-extern ia64_mv_dma_get_ops			hwsw_dma_get_ops;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name			"hpzx1_swiotlb"
-#define platform_setup				dig_setup
-#define platform_dma_init			machvec_noop
-#define platform_dma_get_ops			hwsw_dma_get_ops
-
-#endif /* _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h */
diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
index ad7d9963de34..4be5ee04ccfa 100644
--- a/arch/ia64/kernel/dma-mapping.c
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -9,12 +9,6 @@ int iommu_detected __read_mostly;
 const struct dma_map_ops *dma_ops;
 EXPORT_SYMBOL(dma_ops);
 
-const struct dma_map_ops *dma_get_ops(struct device *dev)
-{
-	return dma_ops;
-}
-EXPORT_SYMBOL(dma_get_ops);
-
 #ifdef CONFIG_SWIOTLB
 void *arch_dma_alloc(struct device *dev, size_t size,
 		dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index be50d7a93f4c..42d45e97c2ae 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -118,7 +118,7 @@ config AGP_I460
 
 config AGP_HP_ZX1
 	tristate "HP ZX1 chipset AGP support"
-	depends on AGP && (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC)
+	depends on AGP && (IA64_HP_ZX1 || IA64_GENERIC)
 	help
 	  This option gives you AGP GART support for the HP ZX1 chipset
 	  for IA64 processors.
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 21/28] ia64: remove the SGI UV simulator support
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (18 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 20/28] ia64: remove the zx1 swiotlb machvec Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 22/28] ia64: remove the unused sn_coherency_id symbol Christoph Hellwig
                   ` (6 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The simulator support was marked as temporary since the initial commit,
so drop it more than 10 years later.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/include/asm/sn/simulator.h | 25 ----------------------
 arch/ia64/include/asm/sn/sn_sal.h    | 10 ---------
 arch/ia64/include/asm/uv/uv.h        |  4 +---
 arch/ia64/uv/kernel/setup.c          | 31 +++++-----------------------
 4 files changed, 6 insertions(+), 64 deletions(-)
 delete mode 100644 arch/ia64/include/asm/sn/simulator.h

diff --git a/arch/ia64/include/asm/sn/simulator.h b/arch/ia64/include/asm/sn/simulator.h
deleted file mode 100644
index 3e4557df3b7c..000000000000
--- a/arch/ia64/include/asm/sn/simulator.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- * Copyright (C) 2000-2004 Silicon Graphics, Inc. All rights reserved.
- */
-
-#ifndef _ASM_IA64_SN_SIMULATOR_H
-#define _ASM_IA64_SN_SIMULATOR_H
-
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_UV)
-#define SNMAGIC 0xaeeeeeee8badbeefL
-#define IS_MEDUSA()			({long sn; asm("mov %0=cpuid[%1]" : "=r"(sn) : "r"(2)); sn == SNMAGIC;})
-
-#define SIMULATOR_SLEEP()		asm("nop.i 0x8beef")
-#define IS_RUNNING_ON_SIMULATOR()	(sn_prom_type)
-#define IS_RUNNING_ON_FAKE_PROM()	(sn_prom_type == 2)
-extern int sn_prom_type;		/* 0=hardware, 1=medusa/realprom, 2=medusa/fakeprom */
-#else
-#define IS_MEDUSA()			0
-#define SIMULATOR_SLEEP()
-#define IS_RUNNING_ON_SIMULATOR()	0
-#endif
-
-#endif /* _ASM_IA64_SN_SIMULATOR_H */
diff --git a/arch/ia64/include/asm/sn/sn_sal.h b/arch/ia64/include/asm/sn/sn_sal.h
index 48b88d0807db..d437aa43343b 100644
--- a/arch/ia64/include/asm/sn/sn_sal.h
+++ b/arch/ia64/include/asm/sn/sn_sal.h
@@ -30,8 +30,6 @@
 #define SALRET_INVALID_ARG	(-2)
 #define SALRET_ERROR		(-3)
 
-#define SN_SAL_FAKE_PROM			   0x02009999
-
 /*
  * Returns the physical address of the partition's reserved page through
  * an iterative number of calls.
@@ -81,14 +79,6 @@ sn_change_memprotect(u64 paddr, u64 len, u64 perms, u64 *nasid_array)
 #define SN_MEMPROT_ACCESS_CLASS_6		0x084080
 #define SN_MEMPROT_ACCESS_CLASS_7		0x021080
 
-static inline int
-ia64_sn_is_fake_prom(void)
-{
-	struct ia64_sal_retval rv;
-	SAL_CALL_NOLOCK(rv, SN_SAL_FAKE_PROM, 0, 0, 0, 0, 0, 0, 0);
-	return (rv.status == 0);
-}
-
 union sn_watchlist_u {
 	u64     val;
 	struct {
diff --git a/arch/ia64/include/asm/uv/uv.h b/arch/ia64/include/asm/uv/uv.h
index 71df93ee3bc0..502cf1c56369 100644
--- a/arch/ia64/include/asm/uv/uv.h
+++ b/arch/ia64/include/asm/uv/uv.h
@@ -2,12 +2,10 @@
 #ifndef _ASM_IA64_UV_UV_H
 #define _ASM_IA64_UV_UV_H
 
-#include <asm/sn/simulator.h>
-
 static inline int is_uv_system(void)
 {
 	/* temporary support for running on hardware simulator */
-	return IS_MEDUSA() || ia64_platform_is("uv");
+	return ia64_platform_is("uv");
 }
 
 #endif	/* _ASM_IA64_UV_UV_H */
diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
index 11478d2d863d..6ac4bd314d92 100644
--- a/arch/ia64/uv/kernel/setup.c
+++ b/arch/ia64/uv/kernel/setup.c
@@ -10,14 +10,12 @@
 
 #include <linux/module.h>
 #include <linux/percpu.h>
-#include <asm/sn/simulator.h>
 #include <asm/uv/uv_mmrs.h>
 #include <asm/uv/uv_hub.h>
 
 DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
 EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
 
-int sn_prom_type;
 long sn_coherency_id;
 EXPORT_SYMBOL_GPL(sn_coherency_id);
 
@@ -60,30 +58,11 @@ void __init uv_setup(char **cmdline_p)
 	int nid, cpu, m_val, n_val;
 	unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;
 
-	if (IS_MEDUSA()) {
-		lowmem_redir_base = 0;
-		lowmem_redir_size = 0;
-		node_id.v = 0;
-		m_n_config.s.m_skt = 37;
-		m_n_config.s.n_skt = 0;
-		mmr_base = 0;
-#if 0
-		/* Need BIOS calls - TDB */
-		if (!ia64_sn_is_fake_prom())
-			sn_prom_type = 1;
-		else
-#endif
-			sn_prom_type = 2;
-		printk(KERN_INFO "Running on medusa with %s PROM\n",
-					(sn_prom_type == 1) ? "real" : "fake");
-	} else {
-		get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
-		node_id.v = uv_read_local_mmr(UVH_NODE_ID);
-		m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
-		mmr_base =
-			uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
-				~UV_MMR_ENABLE;
-	}
+	get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
+	node_id.v = uv_read_local_mmr(UVH_NODE_ID);
+	m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
+	mmr_base = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
+			~UV_MMR_ENABLE;
 
 	m_val = m_n_config.s.m_skt;
 	n_val = m_n_config.s.n_skt;
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 22/28] ia64: remove the unused sn_coherency_id symbol
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (19 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 21/28] ia64: remove the SGI UV simulator support Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 23/28] ia64: rework iommu probing Christoph Hellwig
                   ` (5 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The sn_coherency_id symbol isn't used anywhere, remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/uv/kernel/setup.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
index 6ac4bd314d92..b081f5138f5c 100644
--- a/arch/ia64/uv/kernel/setup.c
+++ b/arch/ia64/uv/kernel/setup.c
@@ -16,9 +16,6 @@
 DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
 EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
 
-long sn_coherency_id;
-EXPORT_SYMBOL_GPL(sn_coherency_id);
-
 struct redir_addr {
 	unsigned long redirect;
 	unsigned long alias;
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 23/28] ia64: rework iommu probing
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (20 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 22/28] ia64: remove the unused sn_coherency_id symbol Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 24/28] ia64: move the ROOT_DEV setup to common code Christoph Hellwig
                   ` (4 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

ia64 currently organizes the iommu probing along machves, which isn't
very helpful.  Instead just try to probe for Intel IOMMUs in mem_init
as they are properly described in ACPI and if none was found initialize
the swiotlb buffer.  The HP SBA handling is then only done delayed when
the actual hardware is probed. Only in the case that we actually found
usable IOMMUs we then set up the DMA ops and free the not needed
swiotlb buffer.  This scheme gets rid of the need for the dma_init
machvec operation, and the dig_vtd machvec.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/Kconfig                       |  5 --
 arch/ia64/Makefile                      |  1 -
 arch/ia64/dig/Makefile                  |  5 --
 arch/ia64/dig/machvec_vtd.c             |  3 -
 arch/ia64/hp/common/sba_iommu.c         | 82 +++++++++----------------
 arch/ia64/include/asm/acpi.h            |  2 -
 arch/ia64/include/asm/machvec.h         | 11 ----
 arch/ia64/include/asm/machvec_dig_vtd.h | 19 ------
 arch/ia64/include/asm/machvec_hpzx1.h   |  2 -
 arch/ia64/include/asm/pci.h             |  3 -
 arch/ia64/kernel/acpi.c                 | 15 -----
 arch/ia64/kernel/dma-mapping.c          |  6 --
 arch/ia64/kernel/pci-dma.c              | 21 -------
 arch/ia64/mm/init.c                     | 16 +++--
 14 files changed, 40 insertions(+), 151 deletions(-)
 delete mode 100644 arch/ia64/dig/machvec_vtd.c
 delete mode 100644 arch/ia64/include/asm/machvec_dig_vtd.h

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index a42ab41ee8ab..9a8c7ec60cfc 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -146,11 +146,6 @@ config IA64_DIG
 	bool "DIG-compliant"
 	select SWIOTLB
 
-config IA64_DIG_VTD
-	bool "DIG+Intel+IOMMU"
-	select INTEL_IOMMU
-	select PCI_MSI
-
 config IA64_HP_ZX1
 	bool "HP-zx1/sx1000"
 	help
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 0b3647efde5d..22deb5e6f346 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -51,7 +51,6 @@ head-y := arch/ia64/kernel/head.o
 libs-y				+= arch/ia64/lib/
 core-y				+= arch/ia64/kernel/ arch/ia64/mm/
 core-$(CONFIG_IA64_DIG) 	+= arch/ia64/dig/
-core-$(CONFIG_IA64_DIG_VTD) 	+= arch/ia64/dig/
 core-$(CONFIG_IA64_GENERIC) 	+= arch/ia64/dig/
 core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
 core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
diff --git a/arch/ia64/dig/Makefile b/arch/ia64/dig/Makefile
index e7f830825470..5c2f638c31f4 100644
--- a/arch/ia64/dig/Makefile
+++ b/arch/ia64/dig/Makefile
@@ -7,9 +7,4 @@
 #
 
 obj-y := setup.o
-ifeq ($(CONFIG_INTEL_IOMMU), y)
-obj-$(CONFIG_IA64_GENERIC) += machvec.o machvec_vtd.o
-else
 obj-$(CONFIG_IA64_GENERIC) += machvec.o
-endif
-
diff --git a/arch/ia64/dig/machvec_vtd.c b/arch/ia64/dig/machvec_vtd.c
deleted file mode 100644
index 7cd3eb471cad..000000000000
--- a/arch/ia64/dig/machvec_vtd.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#define MACHVEC_PLATFORM_NAME		dig_vtd
-#define MACHVEC_PLATFORM_HEADER		<asm/machvec_dig_vtd.h>
-#include <asm/machvec_init.h>
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 215fa688b729..a7eff5e6d260 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -35,6 +35,7 @@
 #include <linux/iommu-helper.h>
 #include <linux/dma-mapping.h>
 #include <linux/prefetch.h>
+#include <linux/swiotlb.h>
 
 #include <asm/delay.h>		/* ia64_get_itc() */
 #include <asm/io.h>
@@ -43,8 +44,6 @@
 
 #include <asm/acpi-ext.h>
 
-extern int swiotlb_late_init_with_default_size (size_t size);
-
 #define PFX "IOC: "
 
 /*
@@ -2056,27 +2055,33 @@ static int __init acpi_sba_ioc_init_acpi(void)
 /* This has to run before acpi_scan_init(). */
 arch_initcall(acpi_sba_ioc_init_acpi);
 
+static int sba_dma_supported (struct device *dev, u64 mask)
+{
+	/* make sure it's at least 32bit capable */
+	return ((mask & 0xFFFFFFFFUL) == 0xFFFFFFFFUL);
+}
+
+static const struct dma_map_ops sba_dma_ops = {
+	.alloc			= sba_alloc_coherent,
+	.free			= sba_free_coherent,
+	.map_page		= sba_map_page,
+	.unmap_page		= sba_unmap_page,
+	.map_sg			= sba_map_sg_attrs,
+	.unmap_sg		= sba_unmap_sg_attrs,
+	.dma_supported		= sba_dma_supported,
+};
+
 static int __init
 sba_init(void)
 {
-	if (!ia64_platform_is("hpzx1"))
-		return 0;
-
-#if defined(CONFIG_IA64_GENERIC)
-	/* If we are booting a kdump kernel, the sba_iommu will
-	 * cause devices that were not shutdown properly to MCA
-	 * as soon as they are turned back on.  Our only option for
-	 * a successful kdump kernel boot is to use the swiotlb.
+	/*
+	 * If we are booting a kdump kernel, the sba_iommu will cause devices
+	 * that were not shutdown properly to MCA as soon as they are turned
+	 * back on.  Our only option for a successful kdump kernel boot is to
+	 * use swiotlb.
 	 */
-	if (is_kdump_kernel()) {
-		dma_ops = NULL;
-		if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
-			panic("Unable to initialize software I/O TLB:"
-				  " Try machvec=dig boot option");
-		machvec_init("dig");
+	if (is_kdump_kernel())
 		return 0;
-	}
-#endif
 
 	/*
 	 * ioc_found should be populated by the acpi_sba_ioc_handler's .attach()
@@ -2085,22 +2090,8 @@ sba_init(void)
 	while (ioc_found)
 		acpi_sba_ioc_add(ioc_found);
 
-	if (!ioc_list) {
-#ifdef CONFIG_IA64_GENERIC
-		/*
-		 * If we didn't find something sba_iommu can claim, we
-		 * need to setup the swiotlb and switch to the dig machvec.
-		 */
-		dma_ops = NULL;
-		if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
-			panic("Unable to find SBA IOMMU or initialize "
-			      "software I/O TLB: Try machvec=dig boot option");
-		machvec_init("dig");
-#else
-		panic("Unable to find SBA IOMMU: Try a generic or DIG kernel");
-#endif
+	if (!ioc_list)
 		return 0;
-	}
 
 	{
 		struct pci_bus *b = NULL;
@@ -2108,6 +2099,10 @@ sba_init(void)
 			sba_connect_bus(b);
 	}
 
+	/* no need for swiotlb with the iommu */
+	swiotlb_exit();
+	dma_ops = &sba_dma_ops;
+
 #ifdef CONFIG_PROC_FS
 	ioc_proc_init();
 #endif
@@ -2123,12 +2118,6 @@ nosbagart(char *str)
 	return 1;
 }
 
-static int sba_dma_supported (struct device *dev, u64 mask)
-{
-	/* make sure it's at least 32bit capable */
-	return ((mask & 0xFFFFFFFFUL) == 0xFFFFFFFFUL);
-}
-
 __setup("nosbagart", nosbagart);
 
 static int __init
@@ -2153,18 +2142,3 @@ sba_page_override(char *str)
 }
 
 __setup("sbapagesize=",sba_page_override);
-
-const struct dma_map_ops sba_dma_ops = {
-	.alloc			= sba_alloc_coherent,
-	.free			= sba_free_coherent,
-	.map_page		= sba_map_page,
-	.unmap_page		= sba_unmap_page,
-	.map_sg			= sba_map_sg_attrs,
-	.unmap_sg		= sba_unmap_sg_attrs,
-	.dma_supported		= sba_dma_supported,
-};
-
-void sba_dma_init(void)
-{
-	dma_ops = &sba_dma_ops;
-}
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 9e563df73038..be6bf3e499a6 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -43,8 +43,6 @@ static inline const char *acpi_get_sysname (void)
 	return "uv";
 # elif defined (CONFIG_IA64_DIG)
 	return "dig";
-# elif defined(CONFIG_IA64_DIG_VTD)
-	return "dig_vtd";
 # else
 #	error Unknown platform.  Fix acpi.c.
 # endif
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index fa867e980d87..b22d0499b58c 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -16,14 +16,11 @@
 struct device;
 
 typedef void ia64_mv_setup_t (char **);
-typedef void ia64_mv_dma_init (void);
 
 extern void machvec_setup (char **);
 
 # if defined (CONFIG_IA64_DIG)
 #  include <asm/machvec_dig.h>
-# elif defined(CONFIG_IA64_DIG_VTD)
-#  include <asm/machvec_dig_vtd.h>
 # elif defined (CONFIG_IA64_HP_ZX1)
 #  include <asm/machvec_hpzx1.h>
 # elif defined (CONFIG_IA64_SGI_UV)
@@ -35,7 +32,6 @@ extern void machvec_setup (char **);
 # else
 #  define ia64_platform_name	ia64_mv.name
 #  define platform_setup	ia64_mv.setup
-#  define platform_dma_init		ia64_mv.dma_init
 # endif
 
 /* __attribute__((__aligned__(16))) is required to make size of the
@@ -46,14 +42,12 @@ extern void machvec_setup (char **);
 struct ia64_machine_vector {
 	const char *name;
 	ia64_mv_setup_t *setup;
-	ia64_mv_dma_init *dma_init;
 } __attribute__((__aligned__(16))); /* align attrib? see above comment */
 
 #define MACHVEC_INIT(name)			\
 {						\
 	#name,					\
 	platform_setup,				\
-	platform_dma_init,			\
 }
 
 extern struct ia64_machine_vector ia64_mv;
@@ -64,8 +58,6 @@ extern void machvec_init_from_cmdline(const char *cmdline);
 #  error Unknown configuration.  Update arch/ia64/include/asm/machvec.h.
 # endif /* CONFIG_IA64_GENERIC */
 
-extern void swiotlb_dma_init(void);
-
 /*
  * Define default versions so we can extend machvec for new platforms without having
  * to update the machvec files for all existing platforms.
@@ -73,8 +65,5 @@ extern void swiotlb_dma_init(void);
 #ifndef platform_setup
 # define platform_setup			machvec_setup
 #endif
-#ifndef platform_dma_init
-# define platform_dma_init		swiotlb_dma_init
-#endif
 
 #endif /* _ASM_IA64_MACHVEC_H */
diff --git a/arch/ia64/include/asm/machvec_dig_vtd.h b/arch/ia64/include/asm/machvec_dig_vtd.h
deleted file mode 100644
index bb44eb9039dd..000000000000
--- a/arch/ia64/include/asm/machvec_dig_vtd.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_DIG_VTD_h
-#define _ASM_IA64_MACHVEC_DIG_VTD_h
-
-extern ia64_mv_setup_t			dig_setup;
-extern ia64_mv_dma_init			pci_iommu_alloc;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name			"dig_vtd"
-#define platform_setup				dig_setup
-#define platform_dma_init			pci_iommu_alloc
-
-#endif /* _ASM_IA64_MACHVEC_DIG_VTD_h */
diff --git a/arch/ia64/include/asm/machvec_hpzx1.h b/arch/ia64/include/asm/machvec_hpzx1.h
index 5299ac38bfb6..7d37998ffdbf 100644
--- a/arch/ia64/include/asm/machvec_hpzx1.h
+++ b/arch/ia64/include/asm/machvec_hpzx1.h
@@ -3,7 +3,6 @@
 #define _ASM_IA64_MACHVEC_HPZX1_h
 
 extern ia64_mv_setup_t			dig_setup;
-extern ia64_mv_dma_init			sba_dma_init;
 
 /*
  * This stuff has dual use!
@@ -14,6 +13,5 @@ extern ia64_mv_dma_init			sba_dma_init;
  */
 #define ia64_platform_name			"hpzx1"
 #define platform_setup				dig_setup
-#define platform_dma_init			sba_dma_init
 
 #endif /* _ASM_IA64_MACHVEC_HPZX1_h */
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index ef91b780a3f2..8c163d1d0189 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -69,7 +69,4 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 	return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
 }
 
-#ifdef CONFIG_INTEL_IOMMU
-extern void pci_iommu_alloc(void);
-#endif
 #endif /* _ASM_IA64_PCI_H */
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index a63e472f5317..644f34e4342e 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -65,9 +65,6 @@ acpi_get_sysname(void)
 	struct acpi_table_rsdp *rsdp;
 	struct acpi_table_xsdt *xsdt;
 	struct acpi_table_header *hdr;
-#ifdef CONFIG_INTEL_IOMMU
-	u64 i, nentries;
-#endif
 
 	rsdp_phys = acpi_find_rsdp();
 	if (!rsdp_phys) {
@@ -98,18 +95,6 @@ acpi_get_sysname(void)
 			return "uv";
 	}
 
-#ifdef CONFIG_INTEL_IOMMU
-	/* Look for Intel IOMMU */
-	nentries = (hdr->length - sizeof(*hdr)) /
-			 sizeof(xsdt->table_offset_entry[0]);
-	for (i = 0; i < nentries; i++) {
-		hdr = __va(xsdt->table_offset_entry[i]);
-		if (strncmp(hdr->signature, ACPI_SIG_DMAR,
-			sizeof(ACPI_SIG_DMAR) - 1) == 0)
-			return "dig_vtd";
-	}
-#endif
-
 	return "dig";
 }
 #endif /* CONFIG_IA64_GENERIC */
diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
index 4be5ee04ccfa..53aaa8597920 100644
--- a/arch/ia64/kernel/dma-mapping.c
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/dma-direct.h>
-#include <linux/swiotlb.h>
 #include <linux/export.h>
 
 /* Set this to 1 if there is a HW IOMMU in the system */
@@ -27,9 +26,4 @@ long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
 {
 	return page_to_pfn(virt_to_page(cpu_addr));
 }
-
-void __init swiotlb_dma_init(void)
-{
-	swiotlb_init(1);
-}
 #endif
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index fe988c49f01c..c5a8df9e77d0 100644
--- a/arch/ia64/kernel/pci-dma.c
+++ b/arch/ia64/kernel/pci-dma.c
@@ -34,24 +34,3 @@ static int __init pci_iommu_init(void)
 
 /* Must execute after PCI subsystem */
 fs_initcall(pci_iommu_init);
-
-void __init pci_iommu_alloc(void)
-{
-	/*
-	 * The order of these functions is important for
-	 * fall-back/fail-over reasons
-	 */
-	detect_intel_iommu();
-
-#ifdef CONFIG_SWIOTLB
-	if (!iommu_detected) {
-#ifdef CONFIG_IA64_GENERIC
-		printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
-		machvec_init("dig");
-		swiotlb_dma_init();
-#else
-		panic("Unable to find Intel IOMMU");
-#endif /* CONFIG_IA64_GENERIC */
-	}
-#endif /* CONFIG_SWIOTLB */
-}
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 9a4a16439900..ed3ced65705e 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -9,6 +9,7 @@
 #include <linux/init.h>
 
 #include <linux/dma-noncoherent.h>
+#include <linux/dmar.h>
 #include <linux/efi.h>
 #include <linux/elf.h>
 #include <linux/memblock.h>
@@ -23,6 +24,7 @@
 #include <linux/proc_fs.h>
 #include <linux/bitops.h>
 #include <linux/kexec.h>
+#include <linux/swiotlb.h>
 
 #include <asm/dma.h>
 #include <asm/io.h>
@@ -633,11 +635,17 @@ mem_init (void)
 	BUG_ON(PTRS_PER_PTE * sizeof(pte_t) != PAGE_SIZE);
 
 	/*
-	 * This needs to be called _after_ the command line has been parsed but _before_
-	 * any drivers that may need the PCI DMA interface are initialized or bootmem has
-	 * been freed.
+	 * This needs to be called _after_ the command line has been parsed but
+	 * _before_ any drivers that may need the PCI DMA interface are
+	 * initialized or bootmem has been freed.
 	 */
-	platform_dma_init();
+#ifdef CONFIG_INTEL_IOMMU
+	detect_intel_iommu();
+	if (!iommu_detected)
+#endif
+#ifdef CONFIG_SWIOTLB
+		swiotlb_init(1);
+#endif
 
 #ifdef CONFIG_FLATMEM
 	BUG_ON(!mem_map);
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 24/28] ia64: move the ROOT_DEV setup to common code
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (21 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 23/28] ia64: rework iommu probing Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 25/28] ia64: move the screen_info " Christoph Hellwig
                   ` (3 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

I'm not sure how useful a platform default ROOT_DEV is these days,
but it pretty sure isn't machvec dependent.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/dig/setup.c    | 9 ---------
 arch/ia64/kernel/setup.c | 9 +++++++++
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/ia64/dig/setup.c b/arch/ia64/dig/setup.c
index cc14fdce6db6..0b1866d2462a 100644
--- a/arch/ia64/dig/setup.c
+++ b/arch/ia64/dig/setup.c
@@ -13,13 +13,11 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>
-#include <linux/kdev_t.h>
 #include <linux/string.h>
 #include <linux/screen_info.h>
 #include <linux/console.h>
 #include <linux/timex.h>
 #include <linux/sched.h>
-#include <linux/root_dev.h>
 
 #include <asm/io.h>
 #include <asm/machvec.h>
@@ -30,13 +28,6 @@ dig_setup (char **cmdline_p)
 {
 	unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
 
-	/*
-	 * Default to /dev/sda2.  This assumes that the EFI partition
-	 * is physical disk 1 partition 1 and the Linux root disk is
-	 * physical disk 1 partition 2.
-	 */
-	ROOT_DEV = Root_SDA2;		/* default to second partition on first drive */
-
 #ifdef CONFIG_SMP
 	init_smp_config();
 #endif
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 8d47836d932c..560f9833c665 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -30,6 +30,7 @@
 #include <linux/console.h>
 #include <linux/delay.h>
 #include <linux/cpu.h>
+#include <linux/kdev_t.h>
 #include <linux/kernel.h>
 #include <linux/memblock.h>
 #include <linux/reboot.h>
@@ -41,6 +42,7 @@
 #include <linux/threads.h>
 #include <linux/screen_info.h>
 #include <linux/dmi.h>
+#include <linux/root_dev.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>
 #include <linux/efi.h>
@@ -599,6 +601,13 @@ setup_arch (char **cmdline_p)
 	if (!nomca)
 		ia64_mca_init();
 
+	/*
+	 * Default to /dev/sda2.  This assumes that the EFI partition
+	 * is physical disk 1 partition 1 and the Linux root disk is
+	 * physical disk 1 partition 2.
+	 */
+	ROOT_DEV = Root_SDA2;		/* default to second partition on first drive */
+
 	platform_setup(cmdline_p);
 	paging_init();
 
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 25/28] ia64: move the screen_info setup to common code
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (22 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 24/28] ia64: move the ROOT_DEV setup to common code Christoph Hellwig
@ 2019-08-13  7:25 ` " Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 26/28] ia64: remove support for machvecs Christoph Hellwig
                   ` (2 subsequent siblings)
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

There is nothing really platform specific about setting about the
screen_info from the ia64_boot_param structure, so move it from the
dig machvec to common code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/dig/setup.c    | 30 ------------------------------
 arch/ia64/kernel/setup.c | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 30 deletions(-)

diff --git a/arch/ia64/dig/setup.c b/arch/ia64/dig/setup.c
index 0b1866d2462a..ca8be4617b2e 100644
--- a/arch/ia64/dig/setup.c
+++ b/arch/ia64/dig/setup.c
@@ -26,37 +26,7 @@
 void __init
 dig_setup (char **cmdline_p)
 {
-	unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
-
 #ifdef CONFIG_SMP
 	init_smp_config();
 #endif
-
-	memset(&screen_info, 0, sizeof(screen_info));
-
-	if (!ia64_boot_param->console_info.num_rows
-	    || !ia64_boot_param->console_info.num_cols)
-	{
-		printk(KERN_WARNING "dig_setup: warning: invalid screen-info, guessing 80x25\n");
-		orig_x = 0;
-		orig_y = 0;
-		num_cols = 80;
-		num_rows = 25;
-		font_height = 16;
-	} else {
-		orig_x = ia64_boot_param->console_info.orig_x;
-		orig_y = ia64_boot_param->console_info.orig_y;
-		num_cols = ia64_boot_param->console_info.num_cols;
-		num_rows = ia64_boot_param->console_info.num_rows;
-		font_height = 400 / num_rows;
-	}
-
-	screen_info.orig_x = orig_x;
-	screen_info.orig_y = orig_y;
-	screen_info.orig_video_cols  = num_cols;
-	screen_info.orig_video_lines = num_rows;
-	screen_info.orig_video_points = font_height;
-	screen_info.orig_video_mode = 3;	/* XXX fake */
-	screen_info.orig_video_isVGA = 1;	/* XXX fake */
-	screen_info.orig_video_ega_bx = 3;	/* XXX fake */
 }
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 560f9833c665..65d07c60f12d 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -469,6 +469,39 @@ early_console_setup (char *cmdline)
 	return -1;
 }
 
+static void __init
+screen_info_setup(void)
+{
+	unsigned int orig_x, orig_y, num_cols, num_rows, font_height;
+
+	memset(&screen_info, 0, sizeof(screen_info));
+
+	if (!ia64_boot_param->console_info.num_rows ||
+	    !ia64_boot_param->console_info.num_cols) {
+		printk(KERN_WARNING "invalid screen-info, guessing 80x25\n");
+		orig_x = 0;
+		orig_y = 0;
+		num_cols = 80;
+		num_rows = 25;
+		font_height = 16;
+	} else {
+		orig_x = ia64_boot_param->console_info.orig_x;
+		orig_y = ia64_boot_param->console_info.orig_y;
+		num_cols = ia64_boot_param->console_info.num_cols;
+		num_rows = ia64_boot_param->console_info.num_rows;
+		font_height = 400 / num_rows;
+	}
+
+	screen_info.orig_x = orig_x;
+	screen_info.orig_y = orig_y;
+	screen_info.orig_video_cols  = num_cols;
+	screen_info.orig_video_lines = num_rows;
+	screen_info.orig_video_points = font_height;
+	screen_info.orig_video_mode = 3;	/* XXX fake */
+	screen_info.orig_video_isVGA = 1;	/* XXX fake */
+	screen_info.orig_video_ega_bx = 3;	/* XXX fake */
+}
+
 static inline void
 mark_bsp_online (void)
 {
@@ -609,6 +642,7 @@ setup_arch (char **cmdline_p)
 	ROOT_DEV = Root_SDA2;		/* default to second partition on first drive */
 
 	platform_setup(cmdline_p);
+	screen_info_setup();
 	paging_init();
 
 	clear_sched_clock_stable();
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 26/28] ia64: remove support for machvecs
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (23 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 25/28] ia64: move the screen_info " Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 27/28] ia64: remove CONFIG_SWIOTLB ifdefs Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 28/28] genirq: remove the is_affinity_mask_valid hook Christoph Hellwig
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

The only thing remaining of the machvecs is a few checks if we are
running on an SGI UV system.  Replace those with the existing
is_uv_system() check that has been rewritten to simply check the
OEM ID directly.

That leaves us with a generic kernel that is as fast as the previous
DIG/ZX1/UV kernels, but can support all hardware.  Support for UV
and the HP SBA IOMMU is now optional based on new config options.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/Kconfig                     | 72 ++++++++-------------------
 arch/ia64/Kconfig.debug               |  2 +-
 arch/ia64/Makefile                    |  7 +--
 arch/ia64/configs/bigsur_defconfig    |  1 -
 arch/ia64/configs/tiger_defconfig     |  1 -
 arch/ia64/configs/zx1_defconfig       |  1 -
 arch/ia64/dig/Makefile                | 10 ----
 arch/ia64/dig/machvec.c               |  3 --
 arch/ia64/dig/setup.c                 | 32 ------------
 arch/ia64/hp/common/Makefile          |  2 +-
 arch/ia64/hp/zx1/Makefile             |  9 ----
 arch/ia64/hp/zx1/hpzx1_machvec.c      |  3 --
 arch/ia64/include/asm/acpi.h          | 16 ------
 arch/ia64/include/asm/hw_irq.h        |  5 +-
 arch/ia64/include/asm/io.h            |  1 -
 arch/ia64/include/asm/iommu.h         |  1 -
 arch/ia64/include/asm/machvec.h       | 69 -------------------------
 arch/ia64/include/asm/machvec_dig.h   | 17 -------
 arch/ia64/include/asm/machvec_hpzx1.h | 17 -------
 arch/ia64/include/asm/machvec_init.h  | 11 ----
 arch/ia64/include/asm/machvec_uv.h    | 26 ----------
 arch/ia64/include/asm/mmzone.h        | 13 ++---
 arch/ia64/include/asm/processor.h     |  2 -
 arch/ia64/include/asm/tlb.h           |  1 -
 arch/ia64/include/asm/uv/uv.h         | 23 ++++++++-
 arch/ia64/kernel/Makefile             |  4 +-
 arch/ia64/kernel/acpi.c               | 55 --------------------
 arch/ia64/kernel/iosapic.c            |  1 -
 arch/ia64/kernel/irq_ia64.c           |  5 +-
 arch/ia64/kernel/machvec.c            | 70 --------------------------
 arch/ia64/kernel/mca.c                |  1 -
 arch/ia64/kernel/mca_drv.c            |  1 -
 arch/ia64/kernel/pci-dma.c            |  1 -
 arch/ia64/kernel/setup.c              | 24 ++++-----
 arch/ia64/kernel/smp.c                |  1 -
 arch/ia64/kernel/smpboot.c            |  1 -
 arch/ia64/kernel/time.c               |  1 -
 arch/ia64/kernel/vmlinux.lds.S        | 10 ----
 arch/ia64/mm/init.c                   |  1 -
 arch/ia64/pci/fixup.c                 |  6 +--
 arch/ia64/pci/pci.c                   |  1 -
 arch/ia64/uv/kernel/Makefile          |  1 -
 arch/ia64/uv/kernel/machvec.c         | 11 ----
 arch/ia64/uv/kernel/setup.c           | 34 +++++++++++++
 drivers/acpi/Kconfig                  |  2 +-
 drivers/char/agp/Kconfig              |  4 +-
 drivers/iommu/Kconfig                 |  2 +-
 drivers/misc/Kconfig                  |  2 +-
 drivers/misc/sgi-xp/xp_uv.c           |  6 +--
 drivers/misc/sgi-xp/xpc_uv.c          | 14 +++---
 50 files changed, 116 insertions(+), 488 deletions(-)
 delete mode 100644 arch/ia64/dig/Makefile
 delete mode 100644 arch/ia64/dig/machvec.c
 delete mode 100644 arch/ia64/dig/setup.c
 delete mode 100644 arch/ia64/hp/zx1/Makefile
 delete mode 100644 arch/ia64/hp/zx1/hpzx1_machvec.c
 delete mode 100644 arch/ia64/include/asm/machvec.h
 delete mode 100644 arch/ia64/include/asm/machvec_dig.h
 delete mode 100644 arch/ia64/include/asm/machvec_hpzx1.h
 delete mode 100644 arch/ia64/include/asm/machvec_init.h
 delete mode 100644 arch/ia64/include/asm/machvec_uv.h
 delete mode 100644 arch/ia64/kernel/machvec.c
 delete mode 100644 arch/ia64/uv/kernel/machvec.c

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 9a8c7ec60cfc..13d49c232556 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -11,11 +11,13 @@ config IA64
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
 	select ACPI
+	select ACPI_NUMA if NUMA
 	select ARCH_SUPPORTS_ACPI
 	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
 	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
 	select FORCE_PCI
 	select PCI_DOMAINS if PCI
+	select PCI_MSI
 	select PCI_SYSCALL if PCI
 	select HAVE_UNSTABLE_SCHED_CLOCK
 	select HAVE_EXIT_THREAD
@@ -30,8 +32,8 @@ config IA64
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_MEMBLOCK_NODE_MAP
 	select HAVE_VIRT_CPU_ACCOUNTING
-	select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB
-	select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB
+	select ARCH_HAS_DMA_COHERENT_TO_PFN
+	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select VIRT_TO_BUS
 	select GENERIC_IRQ_PROBE
 	select GENERIC_PENDING_IRQ if SMP
@@ -45,6 +47,7 @@ config IA64
 	select ARCH_THREAD_STACK_ALLOCATOR
 	select ARCH_CLOCKSOURCE_DATA
 	select GENERIC_TIME_VSYSCALL
+	select SWIOTLB
 	select SYSCTL_ARCH_UNALIGN_NO_WARN
 	select HAVE_MOD_ARCH_SPECIFIC
 	select MODULES_USE_ELF_RELA
@@ -52,6 +55,7 @@ config IA64
 	select HAVE_ARCH_AUDITSYSCALL
 	select NEED_DMA_MAP_STATE
 	select NEED_SG_DMA_LENGTH
+	select NUMA if !FLATMEM
 	default y
 	help
 	  The Itanium Processor Family is Intel's 64-bit successor to
@@ -119,53 +123,6 @@ config AUDIT_ARCH
 	bool
 	default y
 
-choice
-	prompt "System type"
-	default IA64_GENERIC
-
-config IA64_GENERIC
-	bool "generic"
-	select NUMA
-	select ACPI_NUMA
-	select SWIOTLB
-	select PCI_MSI
-	help
-	  This selects the system type of your hardware.  A "generic" kernel
-	  will run on any supported IA-64 system.  However, if you configure
-	  a kernel for your specific system, it will be faster and smaller.
-
-	  generic		For any supported IA-64 system
-	  DIG-compliant		For DIG ("Developer's Interface Guide") compliant systems
-	  DIG+Intel+IOMMU	For DIG systems with Intel IOMMU
-	  HP-zx1/sx1000		For HP systems
-	  SGI-UV		For SGI UV systems
-
-	  If you don't know what to do, choose "generic".
-
-config IA64_DIG
-	bool "DIG-compliant"
-	select SWIOTLB
-
-config IA64_HP_ZX1
-	bool "HP-zx1/sx1000"
-	help
-	  Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
-	  support for the HP I/O MMU.
-
-config IA64_SGI_UV
-	bool "SGI-UV"
-	select NUMA
-	select ACPI_NUMA
-	select SWIOTLB
-	help
-	  Selecting this option will optimize the kernel for use on UV based
-	  systems, but the resulting kernel binary will not run on other
-	  types of ia64 systems.  If you have an SGI UV system, it's safe
-	  to select this option.  If in doubt, select ia64 generic support
-	  instead.
-
-endchoice
-
 choice
 	prompt "Processor type"
 	default ITANIUM
@@ -230,6 +187,20 @@ config IA64_L1_CACHE_SHIFT
 	default "7" if MCKINLEY
 	default "6" if ITANIUM
 
+config IA64_SGI_UV
+	bool "SGI-UV support"
+	help
+	  Selecting this option will add specific support for running on SGI
+	  UV based systems.  If you have an SGI UV system or are building a
+	  distro kernel, select this option.
+
+config IA64_HP_SBA_IOMMU
+	bool "HP SBA IOMMU support"
+	default y
+	help
+	  Say Y here to add support for the SBA IOMMU found on HP zx1 and
+	  sx1000 systems.  If you're unsure, answer Y.
+
 config IA64_CYCLONE
 	bool "Cyclone (EXA) Time Source support"
 	help
@@ -334,13 +305,12 @@ config ARCH_SPARSEMEM_ENABLE
 	select SPARSEMEM_VMEMMAP_ENABLE
 
 config ARCH_DISCONTIGMEM_DEFAULT
-	def_bool y if (IA64_GENERIC || IA64_HP_ZX1)
+	def_bool y
 	depends on ARCH_DISCONTIGMEM_ENABLE
 
 config NUMA
 	bool "NUMA support"
 	depends on !FLATMEM
-	select ACPI_NUMA if ACPI
 	help
 	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 	  Access).  This option is for configuring high-end multiprocessor
diff --git a/arch/ia64/Kconfig.debug b/arch/ia64/Kconfig.debug
index abf8d04ab6ab..40ca23bd228d 100644
--- a/arch/ia64/Kconfig.debug
+++ b/arch/ia64/Kconfig.debug
@@ -14,7 +14,7 @@ config IA64_GRANULE_16MB
 
 config IA64_GRANULE_64MB
 	bool "64MB"
-	depends on !(IA64_GENERIC || IA64_HP_ZX1)
+	depends on BROKEN
 
 endchoice
 
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 22deb5e6f346..e0bb2b6aaa35 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -50,14 +50,9 @@ head-y := arch/ia64/kernel/head.o
 
 libs-y				+= arch/ia64/lib/
 core-y				+= arch/ia64/kernel/ arch/ia64/mm/
-core-$(CONFIG_IA64_DIG) 	+= arch/ia64/dig/
-core-$(CONFIG_IA64_GENERIC) 	+= arch/ia64/dig/
-core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
 core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
 
-drivers-y			+= arch/ia64/pci/
-drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
-drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/
+drivers-y			+= arch/ia64/pci/ arch/ia64/hp/common/
 drivers-$(CONFIG_OPROFILE)	+= arch/ia64/oprofile/
 
 PHONY += compressed check
diff --git a/arch/ia64/configs/bigsur_defconfig b/arch/ia64/configs/bigsur_defconfig
index b6bda1838629..b630bd7351c4 100644
--- a/arch/ia64/configs/bigsur_defconfig
+++ b/arch/ia64/configs/bigsur_defconfig
@@ -7,7 +7,6 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_SGI_PARTITION=y
-CONFIG_IA64_DIG=y
 CONFIG_SMP=y
 CONFIG_NR_CPUS=2
 CONFIG_PREEMPT=y
diff --git a/arch/ia64/configs/tiger_defconfig b/arch/ia64/configs/tiger_defconfig
index 192ed157c9ce..1d6e2a01452b 100644
--- a/arch/ia64/configs/tiger_defconfig
+++ b/arch/ia64/configs/tiger_defconfig
@@ -12,7 +12,6 @@ CONFIG_MODULE_SRCVERSION_ALL=y
 # CONFIG_BLK_DEV_BSG is not set
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_SGI_PARTITION=y
-CONFIG_IA64_DIG=y
 CONFIG_MCKINLEY=y
 CONFIG_IA64_PAGE_SIZE_64KB=y
 CONFIG_IA64_CYCLONE=y
diff --git a/arch/ia64/configs/zx1_defconfig b/arch/ia64/configs/zx1_defconfig
index b504c8e2fd52..8c92e095f8bb 100644
--- a/arch/ia64/configs/zx1_defconfig
+++ b/arch/ia64/configs/zx1_defconfig
@@ -4,7 +4,6 @@ CONFIG_BLK_DEV_INITRD=y
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 CONFIG_PARTITION_ADVANCED=y
-CONFIG_IA64_HP_ZX1=y
 CONFIG_MCKINLEY=y
 CONFIG_SMP=y
 CONFIG_NR_CPUS=16
diff --git a/arch/ia64/dig/Makefile b/arch/ia64/dig/Makefile
deleted file mode 100644
index 5c2f638c31f4..000000000000
--- a/arch/ia64/dig/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# ia64/platform/dig/Makefile
-#
-# Copyright (C) 1999 Silicon Graphics, Inc.
-# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
-#
-
-obj-y := setup.o
-obj-$(CONFIG_IA64_GENERIC) += machvec.o
diff --git a/arch/ia64/dig/machvec.c b/arch/ia64/dig/machvec.c
deleted file mode 100644
index 0c55bdafb473..000000000000
--- a/arch/ia64/dig/machvec.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#define MACHVEC_PLATFORM_NAME		dig
-#define MACHVEC_PLATFORM_HEADER		<asm/machvec_dig.h>
-#include <asm/machvec_init.h>
diff --git a/arch/ia64/dig/setup.c b/arch/ia64/dig/setup.c
deleted file mode 100644
index ca8be4617b2e..000000000000
--- a/arch/ia64/dig/setup.c
+++ /dev/null
@@ -1,32 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Platform dependent support for DIG64 platforms.
- *
- * Copyright (C) 1999 Intel Corp.
- * Copyright (C) 1999, 2001 Hewlett-Packard Co
- * Copyright (C) 1999, 2001, 2003 David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
- * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
- */
-
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/screen_info.h>
-#include <linux/console.h>
-#include <linux/timex.h>
-#include <linux/sched.h>
-
-#include <asm/io.h>
-#include <asm/machvec.h>
-#include <asm/setup.h>
-
-void __init
-dig_setup (char **cmdline_p)
-{
-#ifdef CONFIG_SMP
-	init_smp_config();
-#endif
-}
diff --git a/arch/ia64/hp/common/Makefile b/arch/ia64/hp/common/Makefile
index 47c8f6ecb6f4..11a56ed38229 100644
--- a/arch/ia64/hp/common/Makefile
+++ b/arch/ia64/hp/common/Makefile
@@ -6,5 +6,5 @@
 # Copyright (C) Alex Williamson (alex_williamson@hp.com)
 #
 
-obj-y := sba_iommu.o
+obj-$(CONFIG_IA64_HP_SBA_IOMMU) += sba_iommu.o
 obj-$(CONFIG_IA64_HP_AML_NFW) += aml_nfw.o
diff --git a/arch/ia64/hp/zx1/Makefile b/arch/ia64/hp/zx1/Makefile
deleted file mode 100644
index bea44b4ed173..000000000000
--- a/arch/ia64/hp/zx1/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# ia64/hp/zx1/Makefile
-#
-# Copyright (C) 2002 Hewlett Packard
-# Copyright (C) Alex Williamson (alex_williamson@hp.com)
-#
-
-obj-$(CONFIG_IA64_GENERIC) += hpzx1_machvec.o
diff --git a/arch/ia64/hp/zx1/hpzx1_machvec.c b/arch/ia64/hp/zx1/hpzx1_machvec.c
deleted file mode 100644
index 32518b0f923e..000000000000
--- a/arch/ia64/hp/zx1/hpzx1_machvec.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#define MACHVEC_PLATFORM_NAME		hpzx1
-#define MACHVEC_PLATFORM_HEADER		<asm/machvec_hpzx1.h>
-#include <asm/machvec_init.h>
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index be6bf3e499a6..f886d4dc9d55 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -32,22 +32,6 @@ static inline bool acpi_has_cpu_in_madt(void)
 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
 static inline void disable_acpi(void) { }
 
-#ifdef CONFIG_IA64_GENERIC
-const char *acpi_get_sysname (void);
-#else
-static inline const char *acpi_get_sysname (void)
-{
-# if defined (CONFIG_IA64_HP_ZX1)
-	return "hpzx1";
-# elif defined (CONFIG_IA64_SGI_UV)
-	return "uv";
-# elif defined (CONFIG_IA64_DIG)
-	return "dig";
-# else
-#	error Unknown platform.  Fix acpi.c.
-# endif
-}
-#endif
 int acpi_request_vector (u32 int_type);
 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 
diff --git a/arch/ia64/include/asm/hw_irq.h b/arch/ia64/include/asm/hw_irq.h
index 12808111a767..e6385c7bdeb0 100644
--- a/arch/ia64/include/asm/hw_irq.h
+++ b/arch/ia64/include/asm/hw_irq.h
@@ -12,7 +12,6 @@
 #include <linux/types.h>
 #include <linux/profile.h>
 
-#include <asm/machvec.h>
 #include <asm/ptrace.h>
 #include <asm/smp.h>
 
@@ -56,7 +55,7 @@ typedef u8 ia64_vector;
 extern int ia64_first_device_vector;
 extern int ia64_last_device_vector;
 
-#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined (CONFIG_IA64_DIG))
+#ifdef CONFIG_SMP
 /* Reserve the lower priority vector than device vectors for "move IRQ" IPI */
 #define IA64_IRQ_MOVE_VECTOR		0x30	/* "move IRQ" IPI */
 #define IA64_DEF_FIRST_DEVICE_VECTOR	0x31
@@ -127,7 +126,7 @@ extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect)
 extern void ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action);
 extern void destroy_and_reserve_irq (unsigned int irq);
 
-#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG))
+#ifdef CONFIG_SMP
 extern int irq_prepare_move(int irq, int cpu);
 extern void irq_complete_move(unsigned int irq);
 #else
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index edd5c262d360..54e70c21352a 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -71,7 +71,6 @@ extern unsigned int num_io_spaces;
 #define HAVE_ARCH_PIO_SIZE
 
 #include <asm/intrinsics.h>
-#include <asm/machvec.h>
 #include <asm/page.h>
 #include <asm-generic/iomap.h>
 
diff --git a/arch/ia64/include/asm/iommu.h b/arch/ia64/include/asm/iommu.h
index 7429a72f3f92..679854fbdfc5 100644
--- a/arch/ia64/include/asm/iommu.h
+++ b/arch/ia64/include/asm/iommu.h
@@ -15,6 +15,5 @@ extern int iommu_detected;
 #define no_iommu		(1)
 #define iommu_detected		(0)
 #endif
-extern void machvec_init(const char *name);
 
 #endif
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
deleted file mode 100644
index b22d0499b58c..000000000000
--- a/arch/ia64/include/asm/machvec.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Machine vector for IA-64.
- *
- * Copyright (C) 1999 Silicon Graphics, Inc.
- * Copyright (C) Srinivasa Thirumalachar <sprasad@engr.sgi.com>
- * Copyright (C) Vijay Chander <vijay@engr.sgi.com>
- * Copyright (C) 1999-2001, 2003-2004 Hewlett-Packard Co.
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- */
-#ifndef _ASM_IA64_MACHVEC_H
-#define _ASM_IA64_MACHVEC_H
-
-#include <linux/types.h>
-
-struct device;
-
-typedef void ia64_mv_setup_t (char **);
-
-extern void machvec_setup (char **);
-
-# if defined (CONFIG_IA64_DIG)
-#  include <asm/machvec_dig.h>
-# elif defined (CONFIG_IA64_HP_ZX1)
-#  include <asm/machvec_hpzx1.h>
-# elif defined (CONFIG_IA64_SGI_UV)
-#  include <asm/machvec_uv.h>
-# elif defined (CONFIG_IA64_GENERIC)
-
-# ifdef MACHVEC_PLATFORM_HEADER
-#  include MACHVEC_PLATFORM_HEADER
-# else
-#  define ia64_platform_name	ia64_mv.name
-#  define platform_setup	ia64_mv.setup
-# endif
-
-/* __attribute__((__aligned__(16))) is required to make size of the
- * structure multiple of 16 bytes.
- * This will fillup the holes created because of section 3.3.1 in
- * Software Conventions guide.
- */
-struct ia64_machine_vector {
-	const char *name;
-	ia64_mv_setup_t *setup;
-} __attribute__((__aligned__(16))); /* align attrib? see above comment */
-
-#define MACHVEC_INIT(name)			\
-{						\
-	#name,					\
-	platform_setup,				\
-}
-
-extern struct ia64_machine_vector ia64_mv;
-extern void machvec_init (const char *name);
-extern void machvec_init_from_cmdline(const char *cmdline);
-
-# else
-#  error Unknown configuration.  Update arch/ia64/include/asm/machvec.h.
-# endif /* CONFIG_IA64_GENERIC */
-
-/*
- * Define default versions so we can extend machvec for new platforms without having
- * to update the machvec files for all existing platforms.
- */
-#ifndef platform_setup
-# define platform_setup			machvec_setup
-#endif
-
-#endif /* _ASM_IA64_MACHVEC_H */
diff --git a/arch/ia64/include/asm/machvec_dig.h b/arch/ia64/include/asm/machvec_dig.h
deleted file mode 100644
index bc230f69faeb..000000000000
--- a/arch/ia64/include/asm/machvec_dig.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_DIG_h
-#define _ASM_IA64_MACHVEC_DIG_h
-
-extern ia64_mv_setup_t dig_setup;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name	"dig"
-#define platform_setup		dig_setup
-
-#endif /* _ASM_IA64_MACHVEC_DIG_h */
diff --git a/arch/ia64/include/asm/machvec_hpzx1.h b/arch/ia64/include/asm/machvec_hpzx1.h
deleted file mode 100644
index 7d37998ffdbf..000000000000
--- a/arch/ia64/include/asm/machvec_hpzx1.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_HPZX1_h
-#define _ASM_IA64_MACHVEC_HPZX1_h
-
-extern ia64_mv_setup_t			dig_setup;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name			"hpzx1"
-#define platform_setup				dig_setup
-
-#endif /* _ASM_IA64_MACHVEC_HPZX1_h */
diff --git a/arch/ia64/include/asm/machvec_init.h b/arch/ia64/include/asm/machvec_init.h
deleted file mode 100644
index 7a82e3ea0aff..000000000000
--- a/arch/ia64/include/asm/machvec_init.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#include <asm/iommu.h>
-#include <asm/machvec.h>
-
-#define MACHVEC_HELPER(name)									\
- struct ia64_machine_vector machvec_##name __attribute__ ((unused, __section__ (".machvec")))	\
-	= MACHVEC_INIT(name);
-
-#define MACHVEC_DEFINE(name)	MACHVEC_HELPER(name)
-
-MACHVEC_DEFINE(MACHVEC_PLATFORM_NAME)
diff --git a/arch/ia64/include/asm/machvec_uv.h b/arch/ia64/include/asm/machvec_uv.h
deleted file mode 100644
index 2c50853f35ac..000000000000
--- a/arch/ia64/include/asm/machvec_uv.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * SGI UV Core Functions
- *
- * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
- */
-
-#ifndef _ASM_IA64_MACHVEC_UV_H
-#define _ASM_IA64_MACHVEC_UV_H
-
-extern ia64_mv_setup_t uv_setup;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure.  When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name		"uv"
-#define platform_setup			uv_setup
-
-#endif /* _ASM_IA64_MACHVEC_UV_H */
diff --git a/arch/ia64/include/asm/mmzone.h b/arch/ia64/include/asm/mmzone.h
index e5f461fd6a58..767201f66c93 100644
--- a/arch/ia64/include/asm/mmzone.h
+++ b/arch/ia64/include/asm/mmzone.h
@@ -27,16 +27,9 @@ static inline int pfn_to_nid(unsigned long pfn)
 		return nid;
 }
 
-#ifdef CONFIG_IA64_DIG /* DIG systems are small */
-# define MAX_PHYSNODE_ID	8
-# define NR_NODE_MEMBLKS	(MAX_NUMNODES * 8)
-#else 
-# define MAX_PHYSNODE_ID	2048
-# define NR_NODE_MEMBLKS	(MAX_NUMNODES * 4)
-#endif
-
-#else /* CONFIG_NUMA */
-# define NR_NODE_MEMBLKS	(MAX_NUMNODES * 4)
+#define MAX_PHYSNODE_ID		2048
 #endif /* CONFIG_NUMA */
 
+#define NR_NODE_MEMBLKS		(MAX_NUMNODES * 4)
+
 #endif /* _ASM_IA64_MMZONE_H */
diff --git a/arch/ia64/include/asm/processor.h b/arch/ia64/include/asm/processor.h
index c91ef98ed6bf..95a2ec37400f 100644
--- a/arch/ia64/include/asm/processor.h
+++ b/arch/ia64/include/asm/processor.h
@@ -679,8 +679,6 @@ enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT,
 
 void default_idle(void);
 
-#define ia64_platform_is(x) (strcmp(x, ia64_platform_name) == 0)
-
 #endif /* !__ASSEMBLY__ */
 
 #endif /* _ASM_IA64_PROCESSOR_H */
diff --git a/arch/ia64/include/asm/tlb.h b/arch/ia64/include/asm/tlb.h
index 86ec034ba499..f1f257d632b3 100644
--- a/arch/ia64/include/asm/tlb.h
+++ b/arch/ia64/include/asm/tlb.h
@@ -45,7 +45,6 @@
 #include <asm/pgalloc.h>
 #include <asm/processor.h>
 #include <asm/tlbflush.h>
-#include <asm/machvec.h>
 
 #include <asm-generic/tlb.h>
 
diff --git a/arch/ia64/include/asm/uv/uv.h b/arch/ia64/include/asm/uv/uv.h
index 502cf1c56369..48d4526bf4cd 100644
--- a/arch/ia64/include/asm/uv/uv.h
+++ b/arch/ia64/include/asm/uv/uv.h
@@ -2,10 +2,29 @@
 #ifndef _ASM_IA64_UV_UV_H
 #define _ASM_IA64_UV_UV_H
 
+#ifdef CONFIG_IA64_SGI_UV
+extern bool ia64_is_uv;
+
+static inline int is_uv_system(void)
+{
+	return ia64_is_uv;
+}
+
+void __init uv_probe_system_type(void);
+void __init uv_setup(char **cmdline_p);
+#else /* CONFIG_IA64_SGI_UV */
 static inline int is_uv_system(void)
 {
-	/* temporary support for running on hardware simulator */
-	return ia64_platform_is("uv");
+	return false;
+}
+
+static inline void __init uv_probe_system_type(void)
+{
+}
+
+static inline void __init uv_setup(char **cmdline_p)
+{
 }
+#endif /* CONFIG_IA64_SGI_UV */
 
 #endif	/* _ASM_IA64_UV_UV_H */
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index dbde36702cf2..1a8df6669eee 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -10,7 +10,7 @@ endif
 extra-y	:= head.o vmlinux.lds
 
 obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o	\
-	 irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o		\
+	 irq_lsapic.o ivt.o pal.o patch.o process.o perfmon.o ptrace.o sal.o		\
 	 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
 	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o acpi.o \
 	 acpi-ext.o
@@ -30,7 +30,7 @@ obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o crash.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump.o
 obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR)	+= uncached.o
 obj-$(CONFIG_AUDIT)		+= audit.o
-obj-$(CONFIG_PCI_MSI)		+= msi_ia64.o
+obj-y				+= msi_ia64.o
 mca_recovery-y			+= mca_drv.o mca_drv_asm.o
 obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o
 obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 644f34e4342e..70d1587ddcd4 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -31,7 +31,6 @@
 #include <acpi/processor.h>
 #include <asm/io.h>
 #include <asm/iosapic.h>
-#include <asm/machvec.h>
 #include <asm/page.h>
 #include <asm/numa.h>
 #include <asm/sal.h>
@@ -45,60 +44,6 @@ unsigned int acpi_cpei_phys_cpuid;
 
 unsigned long acpi_wakeup_address = 0;
 
-#ifdef CONFIG_IA64_GENERIC
-static unsigned long __init acpi_find_rsdp(void)
-{
-	unsigned long rsdp_phys = 0;
-
-	if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
-		rsdp_phys = efi.acpi20;
-	else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
-		printk(KERN_WARNING PREFIX
-		       "v1.0/r0.71 tables no longer supported\n");
-	return rsdp_phys;
-}
-
-const char __init *
-acpi_get_sysname(void)
-{
-	unsigned long rsdp_phys;
-	struct acpi_table_rsdp *rsdp;
-	struct acpi_table_xsdt *xsdt;
-	struct acpi_table_header *hdr;
-
-	rsdp_phys = acpi_find_rsdp();
-	if (!rsdp_phys) {
-		printk(KERN_ERR
-		       "ACPI 2.0 RSDP not found, default to \"dig\"\n");
-		return "dig";
-	}
-
-	rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys);
-	if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
-		printk(KERN_ERR
-		       "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
-		return "dig";
-	}
-
-	xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
-	hdr = &xsdt->header;
-	if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) {
-		printk(KERN_ERR
-		       "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
-		return "dig";
-	}
-
-	if (!strcmp(hdr->oem_id, "HP")) {
-		return "hpzx1";
-	} else if (!strcmp(hdr->oem_id, "SGI")) {
-		if (!strcmp(hdr->oem_table_id + 4, "UV"))
-			return "uv";
-	}
-
-	return "dig";
-}
-#endif /* CONFIG_IA64_GENERIC */
-
 #define ACPI_MAX_PLATFORM_INTERRUPTS	256
 
 /* Array to record platform interrupt vectors for generic interrupt routing. */
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 2d25958a7ed7..fad4db20ce65 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -93,7 +93,6 @@
 #include <asm/hw_irq.h>
 #include <asm/io.h>
 #include <asm/iosapic.h>
-#include <asm/machvec.h>
 #include <asm/processor.h>
 #include <asm/ptrace.h>
 
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index b989731bbeac..f10208478131 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -37,7 +37,6 @@
 #include <asm/intrinsics.h>
 #include <asm/io.h>
 #include <asm/hw_irq.h>
-#include <asm/machvec.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
 
@@ -249,7 +248,7 @@ void __setup_vector_irq(int cpu)
 	}
 }
 
-#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG))
+#ifdef CONFIG_SMP
 
 static enum vector_domain_type {
 	VECTOR_DOMAIN_NONE,
@@ -637,11 +636,9 @@ init_IRQ (void)
 	ia64_register_ipi();
 	register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL);
 #ifdef CONFIG_SMP
-#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG)
 	if (vector_domain_type != VECTOR_DOMAIN_NONE)
 		register_percpu_irq(IA64_IRQ_MOVE_VECTOR, &irq_move_irqaction);
 #endif
-#endif
 #ifdef CONFIG_PERFMON
 	pfm_init_percpu();
 #endif
diff --git a/arch/ia64/kernel/machvec.c b/arch/ia64/kernel/machvec.c
deleted file mode 100644
index 3db3be7aaae5..000000000000
--- a/arch/ia64/kernel/machvec.c
+++ /dev/null
@@ -1,70 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include <linux/dma-mapping.h>
-#include <asm/machvec.h>
-
-#ifdef CONFIG_IA64_GENERIC
-
-#include <linux/kernel.h>
-#include <linux/string.h>
-
-#include <asm/page.h>
-
-struct ia64_machine_vector ia64_mv = {
-};
-EXPORT_SYMBOL(ia64_mv);
-
-static struct ia64_machine_vector * __init
-lookup_machvec (const char *name)
-{
-	extern struct ia64_machine_vector machvec_start[];
-	extern struct ia64_machine_vector machvec_end[];
-	struct ia64_machine_vector *mv;
-
-	for (mv = machvec_start; mv < machvec_end; ++mv)
-		if (strcmp (mv->name, name) == 0)
-			return mv;
-
-	return 0;
-}
-
-void __init
-machvec_init (const char *name)
-{
-	struct ia64_machine_vector *mv;
-
-	if (!name)
-		name = acpi_get_sysname();
-	mv = lookup_machvec(name);
-	if (!mv)
-		panic("generic kernel failed to find machine vector for"
-		      " platform %s!", name);
-
-	ia64_mv = *mv;
-	printk(KERN_INFO "booting generic kernel on platform %s\n", name);
-}
-
-void __init
-machvec_init_from_cmdline(const char *cmdline)
-{
-	char str[64];
-	const char *start;
-	char *end;
-
-	if (! (start = strstr(cmdline, "machvec=")) )
-		return machvec_init(NULL);
-
-	strlcpy(str, start + strlen("machvec="), sizeof(str));
-	if ( (end = strchr(str, ' ')) )
-		*end = '\0';
-
-	return machvec_init(str);
-}
-
-#endif /* CONFIG_IA64_GENERIC */
-
-void
-machvec_setup (char **arg)
-{
-}
-EXPORT_SYMBOL(machvec_setup);
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index a7f05883935b..bf2cb9294795 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -91,7 +91,6 @@
 #include <linux/gfp.h>
 
 #include <asm/delay.h>
-#include <asm/machvec.h>
 #include <asm/meminit.h>
 #include <asm/page.h>
 #include <asm/ptrace.h>
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index cd7972ede1d6..4d0ab323dee8 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -26,7 +26,6 @@
 #include <linux/slab.h>
 
 #include <asm/delay.h>
-#include <asm/machvec.h>
 #include <asm/page.h>
 #include <asm/ptrace.h>
 #include <asm/sal.h>
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index c5a8df9e77d0..7885b4a22a59 100644
--- a/arch/ia64/kernel/pci-dma.c
+++ b/arch/ia64/kernel/pci-dma.c
@@ -10,7 +10,6 @@
 #include <linux/module.h>
 #include <linux/dmar.h>
 #include <asm/iommu.h>
-#include <asm/machvec.h>
 #include <linux/dma-mapping.h>
 #include <linux/kernel.h>
 #include <asm/page.h>
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 65d07c60f12d..18de565d5825 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -52,7 +52,6 @@
 #include <linux/kexec.h>
 #include <linux/crash_dump.h>
 
-#include <asm/machvec.h>
 #include <asm/mca.h>
 #include <asm/meminit.h>
 #include <asm/page.h>
@@ -65,11 +64,14 @@
 #include <asm/smp.h>
 #include <asm/tlbflush.h>
 #include <asm/unistd.h>
+#include <asm/uv/uv.h>
 
 #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
 # error "struct cpuinfo_ia64 too big!"
 #endif
 
+char ia64_platform_name[64];
+
 #ifdef CONFIG_SMP
 unsigned long __per_cpu_offset[NR_CPUS];
 EXPORT_SYMBOL(__per_cpu_offset);
@@ -265,7 +267,7 @@ __initcall(register_memory);
  */
 static int __init check_crashkernel_memory(unsigned long pbase, size_t size)
 {
-	if (ia64_platform_is("uv"))
+	if (is_uv_system())
 		return 1;
 	else
 		return pbase < (1UL << 32);
@@ -558,15 +560,7 @@ setup_arch (char **cmdline_p)
 	efi_init();
 	io_port_init();
 
-#ifdef CONFIG_IA64_GENERIC
-	/* machvec needs to be parsed from the command line
-	 * before parse_early_param() is called to ensure
-	 * that ia64_mv is initialised before any command line
-	 * settings may cause console setup to occur
-	 */
-	machvec_init_from_cmdline(*cmdline_p);
-#endif
-
+	uv_probe_system_type();
 	parse_early_param();
 
 	if (early_console_setup(*cmdline_p) == 0)
@@ -641,7 +635,13 @@ setup_arch (char **cmdline_p)
 	 */
 	ROOT_DEV = Root_SDA2;		/* default to second partition on first drive */
 
-	platform_setup(cmdline_p);
+	if (is_uv_system())
+		uv_setup(cmdline_p);
+#ifdef CONFIG_SMP
+	else
+		init_smp_config();
+#endif
+
 	screen_info_setup();
 	paging_init();
 
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 4825b0b41d49..de35c54f033d 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -36,7 +36,6 @@
 #include <linux/atomic.h>
 #include <asm/current.h>
 #include <asm/delay.h>
-#include <asm/machvec.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/page.h>
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index f7058659526c..6501d9a9a21b 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -47,7 +47,6 @@
 #include <asm/delay.h>
 #include <asm/io.h>
 #include <asm/irq.h>
-#include <asm/machvec.h>
 #include <asm/mca.h>
 #include <asm/page.h>
 #include <asm/pgalloc.h>
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index d9ad93a6d825..1e95d32c8877 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -25,7 +25,6 @@
 #include <linux/platform_device.h>
 #include <linux/sched/cputime.h>
 
-#include <asm/machvec.h>
 #include <asm/delay.h>
 #include <asm/hw_irq.h>
 #include <asm/ptrace.h>
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index 0da58cf8e213..d9d4e21107cd 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -141,16 +141,6 @@ SECTIONS {
 		__end___mckinley_e9_bundles = .;
 	}
 
-#if defined(CONFIG_IA64_GENERIC)
-	/* Machine Vector */
-	. = ALIGN(16);
-	.machvec : AT(ADDR(.machvec) - LOAD_OFFSET) {
-		machvec_start = .;
-		*(.machvec)
-		machvec_end = .;
-	}
-#endif
-
 #ifdef	CONFIG_SMP
 	. = ALIGN(PERCPU_PAGE_SIZE);
 	__cpu0_per_cpu = .;
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index ed3ced65705e..1979cdb61d7c 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -28,7 +28,6 @@
 
 #include <asm/dma.h>
 #include <asm/io.h>
-#include <asm/machvec.h>
 #include <asm/numa.h>
 #include <asm/patch.h>
 #include <asm/pgalloc.h>
diff --git a/arch/ia64/pci/fixup.c b/arch/ia64/pci/fixup.c
index e1fa45b2148c..acb55a41260d 100644
--- a/arch/ia64/pci/fixup.c
+++ b/arch/ia64/pci/fixup.c
@@ -8,8 +8,7 @@
 #include <linux/init.h>
 #include <linux/vgaarb.h>
 #include <linux/screen_info.h>
-
-#include <asm/machvec.h>
+#include <asm/uv/uv.h>
 
 /*
  * Fixup to mark boot BIOS video selected by BIOS before it changes
@@ -35,8 +34,7 @@ static void pci_fixup_video(struct pci_dev *pdev)
 	u16 config;
 	struct resource *res;
 
-	if ((strcmp(ia64_platform_name, "dig") != 0)
-	    && (strcmp(ia64_platform_name, "hpzx1")  != 0))
+	if (is_uv_system())
 		return;
 	/* Maybe, this machine supports legacy memory map. */
 
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 89c9f36dc94d..211757e34198 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -24,7 +24,6 @@
 #include <linux/memblock.h>
 #include <linux/export.h>
 
-#include <asm/machvec.h>
 #include <asm/page.h>
 #include <asm/io.h>
 #include <asm/sal.h>
diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile
index 124e441d383d..297196578d19 100644
--- a/arch/ia64/uv/kernel/Makefile
+++ b/arch/ia64/uv/kernel/Makefile
@@ -10,4 +10,3 @@
 ccflags-y := -Iarch/ia64/sn/include
 
 obj-y				+= setup.o
-obj-$(CONFIG_IA64_GENERIC)      += machvec.o
diff --git a/arch/ia64/uv/kernel/machvec.c b/arch/ia64/uv/kernel/machvec.c
deleted file mode 100644
index 50737a9dca74..000000000000
--- a/arch/ia64/uv/kernel/machvec.c
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-#define MACHVEC_PLATFORM_NAME	uv
-#define MACHVEC_PLATFORM_HEADER	<asm/machvec_uv.h>
-#include <asm/machvec_init.h>
diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
index b081f5138f5c..bb025486d791 100644
--- a/arch/ia64/uv/kernel/setup.c
+++ b/arch/ia64/uv/kernel/setup.c
@@ -8,11 +8,17 @@
  * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
  */
 
+#include <linux/acpi.h>
+#include <linux/efi.h>
 #include <linux/module.h>
 #include <linux/percpu.h>
+#include <asm/uv/uv.h>
 #include <asm/uv/uv_mmrs.h>
 #include <asm/uv/uv_hub.h>
 
+bool ia64_is_uv;
+EXPORT_SYMBOL_GPL(ia64_is_uv);
+
 DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
 EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
 
@@ -47,6 +53,34 @@ static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
 	BUG();
 }
 
+void __init uv_probe_system_type(void)
+{
+	struct acpi_table_rsdp *rsdp;
+	struct acpi_table_xsdt *xsdt;
+
+	if (efi.acpi20 == EFI_INVALID_TABLE_ADDR) {
+		pr_err("ACPI 2.0 RSDP not found.\n");
+		return;
+	}
+
+	rsdp = (struct acpi_table_rsdp *)__va(efi.acpi20);
+	if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
+		pr_err("ACPI 2.0 RSDP signature incorrect.\n");
+		return;
+	}
+
+	xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
+	if (strncmp(xsdt->header.signature, ACPI_SIG_XSDT,
+			sizeof(ACPI_SIG_XSDT) - 1)) {
+		pr_err("ACPI 2.0 XSDT signature incorrect.\n");
+		return;
+	}
+
+	if (!strcmp(xsdt->header.oem_id, "SGI") &&
+	    !strcmp(xsdt->header.oem_table_id + 4, "UV"))
+		ia64_is_uv = true;
+}
+
 void __init uv_setup(char **cmdline_p)
 {
 	union uvh_si_addr_map_config_u m_n_config;
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 06a16dc5cfb5..ebe1e9e5fd81 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -323,7 +323,7 @@ config ACPI_NUMA
 	bool "NUMA support"
 	depends on NUMA
 	depends on (X86 || IA64 || ARM64)
-	default y if IA64_GENERIC || ARM64
+	default y if IA64 || ARM64
 
 config ACPI_CUSTOM_DSDT_FILE
 	string "Custom DSDT Table file to include"
diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index 42d45e97c2ae..812d6aa6e013 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -111,14 +111,14 @@ config AGP_VIA
 
 config AGP_I460
 	tristate "Intel 460GX chipset support"
-	depends on AGP && (IA64_DIG || IA64_GENERIC)
+	depends on AGP && IA64
 	help
 	  This option gives you AGP GART support for the Intel 460GX chipset
 	  for IA64 processors.
 
 config AGP_HP_ZX1
 	tristate "HP ZX1 chipset AGP support"
-	depends on AGP && (IA64_HP_ZX1 || IA64_GENERIC)
+	depends on AGP && IA64
 	help
 	  This option gives you AGP GART support for the HP ZX1 chipset
 	  for IA64 processors.
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e15cdcd8cb3c..9a618459d067 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -177,7 +177,7 @@ config DMAR_TABLE
 
 config INTEL_IOMMU
 	bool "Support for Intel IOMMU using DMA Remapping Devices"
-	depends on PCI_MSI && ACPI && (X86 || IA64_GENERIC)
+	depends on PCI_MSI && ACPI && (X86 || IA64)
 	select IOMMU_API
 	select IOMMU_IOVA
 	select NEED_DMA_MAP_STATE
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 423d2d26d8f7..4ef2b751410c 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -188,7 +188,7 @@ config ENCLOSURE_SERVICES
 config SGI_XP
 	tristate "Support communication between SGI SSIs"
 	depends on NET
-	depends on (IA64_GENERIC || IA64_SGI_UV || X86_UV) && SMP
+	depends on (IA64_SGI_UV || X86_UV) && SMP
 	depends on X86_64 || BROKEN
 	select SGI_GRU if X86_64 && SMP
 	---help---
diff --git a/drivers/misc/sgi-xp/xp_uv.c b/drivers/misc/sgi-xp/xp_uv.c
index 5e335e93459c..c4a50baa16c2 100644
--- a/drivers/misc/sgi-xp/xp_uv.c
+++ b/drivers/misc/sgi-xp/xp_uv.c
@@ -17,7 +17,7 @@
 #include <asm/uv/uv_hub.h>
 #if defined CONFIG_X86_64
 #include <asm/uv/bios.h>
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined CONFIG_IA64_SGI_UV
 #include <asm/sn/sn_sal.h>
 #endif
 #include "../sgi-gru/grukservices.h"
@@ -99,7 +99,7 @@ xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size)
 		return xpBiosError;
 	}
 
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined defined CONFIG_IA64_SGI_UV
 	u64 nasid_array;
 
 	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1,
@@ -129,7 +129,7 @@ xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size)
 		return xpBiosError;
 	}
 
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined CONFIG_IA64_SGI_UV
 	u64 nasid_array;
 
 	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0,
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index d8a6fe16e4f5..54115415d88e 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -27,7 +27,7 @@
 #if defined CONFIG_X86_64
 #include <asm/uv/bios.h>
 #include <asm/uv/uv_irq.h>
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined defined CONFIG_IA64_SGI_UV
 #include <asm/sn/intr.h>
 #include <asm/sn/sn_sal.h>
 #endif
@@ -35,7 +35,7 @@
 #include "../sgi-gru/grukservices.h"
 #include "xpc.h"
 
-#if defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#if defined CONFIG_IA64_SGI_UV
 struct uv_IO_APIC_route_entry {
 	__u64	vector		:  8,
 		delivery_mode	:  3,
@@ -121,7 +121,7 @@ xpc_get_gru_mq_irq_uv(struct xpc_gru_mq_uv *mq, int cpu, char *irq_name)
 
 	mq->mmr_value = uv_read_global_mmr64(mmr_pnode, mq->mmr_offset);
 
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined defined CONFIG_IA64_SGI_UV
 	if (strcmp(irq_name, XPC_ACTIVATE_IRQ_NAME) == 0)
 		mq->irq = SGI_XPC_ACTIVATE;
 	else if (strcmp(irq_name, XPC_NOTIFY_IRQ_NAME) == 0)
@@ -144,7 +144,7 @@ xpc_release_gru_mq_irq_uv(struct xpc_gru_mq_uv *mq)
 #if defined CONFIG_X86_64
 	uv_teardown_irq(mq->irq);
 
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined defined CONFIG_IA64_SGI_UV
 	int mmr_pnode;
 	unsigned long mmr_value;
 
@@ -162,7 +162,7 @@ xpc_gru_mq_watchlist_alloc_uv(struct xpc_gru_mq_uv *mq)
 {
 	int ret;
 
-#if defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#if defined defined CONFIG_IA64_SGI_UV
 	int mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
 
 	ret = sn_mq_watchlist_alloc(mmr_pnode, (void *)uv_gpa(mq->address),
@@ -197,7 +197,7 @@ xpc_gru_mq_watchlist_free_uv(struct xpc_gru_mq_uv *mq)
 #if defined CONFIG_X86_64
 	ret = uv_bios_mq_watchlist_free(mmr_pnode, mq->watchlist_num);
 	BUG_ON(ret != BIOS_STATUS_SUCCESS);
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined CONFIG_IA64_SGI_UV
 	ret = sn_mq_watchlist_free(mmr_pnode, mq->watchlist_num);
 	BUG_ON(ret != SALRET_OK);
 #else
@@ -796,7 +796,7 @@ xpc_get_partition_rsvd_page_pa_uv(void *buf, u64 *cookie, unsigned long *rp_pa,
 	else
 		ret = xpBiosError;
 
-#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
+#elif defined defined CONFIG_IA64_SGI_UV
 	status = sn_partition_reserved_page_pa((u64)buf, cookie, rp_pa, len);
 	if (status == SALRET_OK)
 		ret = xpSuccess;
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 27/28] ia64: remove CONFIG_SWIOTLB ifdefs
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (24 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 26/28] ia64: remove support for machvecs Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  2019-08-13  7:25 ` [PATCH 28/28] genirq: remove the is_affinity_mask_valid hook Christoph Hellwig
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

CONFIG_SWIOTLB is now unconditionally selected on ia64, so remove the
ifdefs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/ia64/kernel/dma-mapping.c | 2 --
 arch/ia64/mm/init.c            | 2 --
 2 files changed, 4 deletions(-)

diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
index 53aaa8597920..4a3262795890 100644
--- a/arch/ia64/kernel/dma-mapping.c
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -8,7 +8,6 @@ int iommu_detected __read_mostly;
 const struct dma_map_ops *dma_ops;
 EXPORT_SYMBOL(dma_ops);
 
-#ifdef CONFIG_SWIOTLB
 void *arch_dma_alloc(struct device *dev, size_t size,
 		dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
 {
@@ -26,4 +25,3 @@ long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
 {
 	return page_to_pfn(virt_to_page(cpu_addr));
 }
-#endif
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 1979cdb61d7c..678b98a09c85 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -68,7 +68,6 @@ __ia64_sync_icache_dcache (pte_t pte)
 	set_bit(PG_arch_1, &page->flags);	/* mark page as clean */
 }
 
-#ifdef CONFIG_SWIOTLB
 /*
  * Since DMA is i-cache coherent, any (complete) pages that were written via
  * DMA can be marked as "clean" so that lazy_mmu_prot_update() doesn't have to
@@ -83,7 +82,6 @@ void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
 		set_bit(PG_arch_1, &pfn_to_page(pfn)->flags);
 	} while (++pfn <= PHYS_PFN(paddr + size - 1));
 }
-#endif
 
 inline void
 ia64_set_rbs_bot (void)
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* [PATCH 28/28] genirq: remove the is_affinity_mask_valid hook
  2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
                   ` (25 preceding siblings ...)
  2019-08-13  7:25 ` [PATCH 27/28] ia64: remove CONFIG_SWIOTLB ifdefs Christoph Hellwig
@ 2019-08-13  7:25 ` Christoph Hellwig
  26 siblings, 0 replies; 31+ messages in thread
From: Christoph Hellwig @ 2019-08-13  7:25 UTC (permalink / raw)
  To: Tony Luck, Fenghua Yu, Mike Travis, Dimitri Sivanich
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel

This override was only used by the ia64 SGI SN2 platform, which is
gone now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 kernel/irq/proc.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index da9addb8d655..cfc4f088a0e7 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -100,10 +100,6 @@ static int irq_affinity_hint_proc_show(struct seq_file *m, void *v)
 	return 0;
 }
 
-#ifndef is_affinity_mask_valid
-#define is_affinity_mask_valid(val) 1
-#endif
-
 int no_irq_affinity;
 static int irq_affinity_proc_show(struct seq_file *m, void *v)
 {
@@ -136,11 +132,6 @@ static ssize_t write_irq_affinity(int type, struct file *file,
 	if (err)
 		goto free_cpumask;
 
-	if (!is_affinity_mask_valid(new_value)) {
-		err = -EINVAL;
-		goto free_cpumask;
-	}
-
 	/*
 	 * Do not allow disabling IRQs completely - it's a too easy
 	 * way to make the system unusable accidentally :-) At least
@@ -232,11 +223,6 @@ static ssize_t default_affinity_write(struct file *file,
 	if (err)
 		goto out;
 
-	if (!is_affinity_mask_valid(new_value)) {
-		err = -EINVAL;
-		goto out;
-	}
-
 	/*
 	 * Do not allow disabling IRQs completely - it's a too easy
 	 * way to make the system unusable accidentally :-) At least
-- 
2.20.1


^ permalink raw reply	[flat|nested] 31+ messages in thread

* Re: [PATCH 17/28] ia64: remove the hpsim platform
  2019-08-13  7:25 ` [PATCH 17/28] ia64: remove the hpsim platform Christoph Hellwig
@ 2019-08-13 21:06   ` Vaden, Tom (HPE Server OS Architecture)
  0 siblings, 0 replies; 31+ messages in thread
From: Vaden, Tom (HPE Server OS Architecture) @ 2019-08-13 21:06 UTC (permalink / raw)
  To: Christoph Hellwig, Tony Luck, Fenghua Yu, Travis, Mike, Sivanich,
	Dimitri
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel



On 8/13/19 3:25 AM, Christoph Hellwig wrote:
> The hpsim platform supports the HP IA64 simulator which was useful as a
> bring up platform.  But it is fairly non-standard vs real IA64 system
> in that it for example doesn't support ACPI.  It also comes with a
> whole bunch of simulator specific drivers.  Remove it to simplify the
> IA64 port.
> 
> Note that through a weird twist only them hpsim boot loader built the
> vmlinux.gz file, so the makefile targets for that are moved to the
> main ia64 Makefile now.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Okay to remove hpsim support
Acked-by: Tom Vaden <tom.vaden@hpe.com>

> ---
>   arch/ia64/Kconfig                     |  34 +-
>   arch/ia64/Makefile                    |  27 +-
>   arch/ia64/configs/sim_defconfig       |  52 ---
>   arch/ia64/hp/sim/Kconfig              |  23 --
>   arch/ia64/hp/sim/Makefile             |  17 -
>   arch/ia64/hp/sim/boot/Makefile        |  37 --
>   arch/ia64/hp/sim/boot/boot_head.S     | 165 --------
>   arch/ia64/hp/sim/boot/bootloader.c    | 175 ---------
>   arch/ia64/hp/sim/boot/bootloader.lds  |  67 ----
>   arch/ia64/hp/sim/boot/fw-emu.c        | 374 ------------------
>   arch/ia64/hp/sim/boot/ssc.h           |  36 --
>   arch/ia64/hp/sim/hpsim.S              |  11 -
>   arch/ia64/hp/sim/hpsim_console.c      |  77 ----
>   arch/ia64/hp/sim/hpsim_irq.c          |  76 ----
>   arch/ia64/hp/sim/hpsim_machvec.c      |   3 -
>   arch/ia64/hp/sim/hpsim_setup.c        |  41 --
>   arch/ia64/hp/sim/hpsim_ssc.h          |  37 --
>   arch/ia64/hp/sim/simeth.c             | 510 -------------------------
>   arch/ia64/hp/sim/simscsi.c            | 373 ------------------
>   arch/ia64/hp/sim/simserial.c          | 521 --------------------------
>   arch/ia64/include/asm/acpi.h          |   4 +-
>   arch/ia64/include/asm/hpsim.h         |  17 -
>   arch/ia64/include/asm/iosapic.h       |  12 -
>   arch/ia64/include/asm/machvec.h       |  11 +-
>   arch/ia64/include/asm/machvec_hpsim.h |  19 -
>   arch/ia64/kernel/Makefile             |   3 +-
>   arch/ia64/kernel/irq_ia64.c           |   2 -
>   arch/ia64/kernel/setup.c              |  13 +-
>   28 files changed, 26 insertions(+), 2711 deletions(-)
>   delete mode 100644 arch/ia64/configs/sim_defconfig
>   delete mode 100644 arch/ia64/hp/sim/Kconfig
>   delete mode 100644 arch/ia64/hp/sim/Makefile
>   delete mode 100644 arch/ia64/hp/sim/boot/Makefile
>   delete mode 100644 arch/ia64/hp/sim/boot/boot_head.S
>   delete mode 100644 arch/ia64/hp/sim/boot/bootloader.c
>   delete mode 100644 arch/ia64/hp/sim/boot/bootloader.lds
>   delete mode 100644 arch/ia64/hp/sim/boot/fw-emu.c
>   delete mode 100644 arch/ia64/hp/sim/boot/ssc.h
>   delete mode 100644 arch/ia64/hp/sim/hpsim.S
>   delete mode 100644 arch/ia64/hp/sim/hpsim_console.c
>   delete mode 100644 arch/ia64/hp/sim/hpsim_irq.c
>   delete mode 100644 arch/ia64/hp/sim/hpsim_machvec.c
>   delete mode 100644 arch/ia64/hp/sim/hpsim_setup.c
>   delete mode 100644 arch/ia64/hp/sim/hpsim_ssc.h
>   delete mode 100644 arch/ia64/hp/sim/simeth.c
>   delete mode 100644 arch/ia64/hp/sim/simscsi.c
>   delete mode 100644 arch/ia64/hp/sim/simserial.c
>   delete mode 100644 arch/ia64/include/asm/hpsim.h
>   delete mode 100644 arch/ia64/include/asm/machvec_hpsim.h
> 
> diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
> index ae3aca14506e..63db7a5378ac 100644
> --- a/arch/ia64/Kconfig
> +++ b/arch/ia64/Kconfig
> @@ -10,11 +10,11 @@ config IA64
>   	bool
>   	select ARCH_MIGHT_HAVE_PC_PARPORT
>   	select ARCH_MIGHT_HAVE_PC_SERIO
> -	select ACPI if (!IA64_HP_SIM)
> -	select ARCH_SUPPORTS_ACPI if (!IA64_HP_SIM)
> +	select ACPI
> +	select ARCH_SUPPORTS_ACPI
>   	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
>   	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
> -	select FORCE_PCI if (!IA64_HP_SIM)
> +	select FORCE_PCI
>   	select PCI_DOMAINS if PCI
>   	select PCI_SYSCALL if PCI
>   	select HAVE_UNSTABLE_SCHED_CLOCK
> @@ -140,7 +140,6 @@ config IA64_GENERIC
>   	  HP-zx1/sx1000		For HP systems
>   	  HP-zx1/sx1000+swiotlb	For HP systems with (broken) DMA-constrained devices.
>   	  SGI-UV		For SGI UV systems
> -	  Ski-simulator		For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
>   
>   	  If you don't know what to do, choose "generic".
>   
> @@ -181,11 +180,6 @@ config IA64_SGI_UV
>   	  to select this option.  If in doubt, select ia64 generic support
>   	  instead.
>   
> -config IA64_HP_SIM
> -	bool "Ski-simulator"
> -	select SWIOTLB
> -	depends on !PM
> -
>   endchoice
>   
>   choice
> @@ -239,14 +233,7 @@ config IA64_PAGE_SIZE_64KB
>   
>   endchoice
>   
> -if IA64_HP_SIM
> -config HZ
> -	default 32
> -endif
> -
> -if !IA64_HP_SIM
>   source "kernel/Kconfig.hz"
> -endif
>   
>   config IA64_BRL_EMU
>   	bool
> @@ -265,11 +252,6 @@ config IA64_CYCLONE
>   	  Say Y here to enable support for IBM EXA Cyclone time source.
>   	  If you're unsure, answer N.
>   
> -config IOSAPIC
> -	bool
> -	depends on !IA64_HP_SIM
> -	default y
> -
>   config FORCE_MAX_ZONEORDER
>   	int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
>   	range 11 17  if !HUGETLB_PAGE
> @@ -373,7 +355,7 @@ config ARCH_DISCONTIGMEM_DEFAULT
>   
>   config NUMA
>   	bool "NUMA support"
> -	depends on !IA64_HP_SIM && !FLATMEM
> +	depends on !FLATMEM
>   	select ACPI_NUMA if ACPI
>   	help
>   	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
> @@ -395,7 +377,7 @@ config NODES_SHIFT
>   config VIRTUAL_MEM_MAP
>   	bool "Virtual mem map"
>   	depends on !SPARSEMEM
> -	default y if !IA64_HP_SIM
> +	default y
>   	help
>   	  Say Y to compile the kernel with support for a virtual mem map.
>   	  This code also only takes effect if a memory hole of greater than
> @@ -478,7 +460,7 @@ config IA64_HP_AML_NFW
>   
>   config KEXEC
>   	bool "kexec system call"
> -	depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
> +	depends on !SMP || HOTPLUG_CPU
>   	select KEXEC_CORE
>   	help
>   	  kexec is a system call that implements the ability to shutdown your
> @@ -496,7 +478,7 @@ config KEXEC
>   
>   config CRASH_DUMP
>   	  bool "kernel crash dumps"
> -	  depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
> +	  depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
>   	  help
>   	    Generate crash dump after being started by kexec.
>   
> @@ -518,8 +500,6 @@ endif
>   
>   endmenu
>   
> -source "arch/ia64/hp/sim/Kconfig"
> -
>   config MSPEC
>   	tristate "Memory special operations driver"
>   	depends on IA64
> diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
> index 0d730b061f72..8b866fc1f9cb 100644
> --- a/arch/ia64/Makefile
> +++ b/arch/ia64/Makefile
> @@ -39,6 +39,12 @@ $(error Sorry, you need a newer version of the assember, one that is built from
>   		ftp://ftp.hpl.hp.com/pub/linux-ia64/gas-030124.tar.gz)
>   endif
>   
> +quiet_cmd_gzip = GZIP    $@
> +cmd_gzip = cat $(real-prereqs) | gzip -n -f -9 > $@
> +
> +quiet_cmd_objcopy = OBJCOPY $@
> +cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
> +
>   KBUILD_CFLAGS += $(cflags-y)
>   head-y := arch/ia64/kernel/head.o
>   
> @@ -52,15 +58,12 @@ core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
>   core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
>   
>   drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
> -drivers-$(CONFIG_IA64_HP_SIM)	+= arch/ia64/hp/sim/
>   drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
>   drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
> -drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/uv/
> +drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/
>   drivers-$(CONFIG_OPROFILE)	+= arch/ia64/oprofile/
>   
> -boot := arch/ia64/hp/sim/boot
> -
> -PHONY += boot compressed check
> +PHONY += compressed check
>   
>   all: compressed unwcheck
>   
> @@ -68,22 +71,21 @@ compressed: vmlinux.gz
>   
>   vmlinuz: vmlinux.gz
>   
> -vmlinux.gz: vmlinux
> -	$(Q)$(MAKE) $(build)=$(boot) $@
> +vmlinux.gz: vmlinux.bin FORCE
> +	$(call if_changed,gzip)
> +
> +vmlinux.bin: vmlinux FORCE
> +	$(call if_changed,objcopy)
>   
>   unwcheck: vmlinux
>   	-$(Q)READELF=$(READELF) $(PYTHON) $(srctree)/arch/ia64/scripts/unwcheck.py $<
>   
>   archclean:
> -	$(Q)$(MAKE) $(clean)=$(boot)
>   
>   archheaders:
>   	$(Q)$(MAKE) $(build)=arch/ia64/kernel/syscalls all
>   
> -CLEAN_FILES += vmlinux.gz bootloader
> -
> -boot:	lib/lib.a vmlinux
> -	$(Q)$(MAKE) $(build)=$(boot) $@
> +CLEAN_FILES += vmlinux.gz
>   
>   install: vmlinux.gz
>   	sh $(srctree)/arch/ia64/install.sh $(KERNELRELEASE) $< System.map "$(INSTALL_PATH)"
> @@ -91,7 +93,6 @@ install: vmlinux.gz
>   define archhelp
>     echo '* compressed	- Build compressed kernel image'
>     echo '  install	- Install compressed kernel image'
> -  echo '  boot		- Build vmlinux and bootloader for Ski simulator'
>     echo '* unwcheck	- Check vmlinux for invalid unwind info'
>   endef
>   
> diff --git a/arch/ia64/configs/sim_defconfig b/arch/ia64/configs/sim_defconfig
> deleted file mode 100644
> index f0f69fdbddae..000000000000
> --- a/arch/ia64/configs/sim_defconfig
> +++ /dev/null
> @@ -1,52 +0,0 @@
> -CONFIG_SYSVIPC=y
> -CONFIG_IKCONFIG=y
> -CONFIG_IKCONFIG_PROC=y
> -CONFIG_LOG_BUF_SHIFT=16
> -CONFIG_MODULES=y
> -CONFIG_MODULE_UNLOAD=y
> -CONFIG_MODULE_FORCE_UNLOAD=y
> -CONFIG_MODVERSIONS=y
> -CONFIG_PARTITION_ADVANCED=y
> -CONFIG_IA64_HP_SIM=y
> -CONFIG_MCKINLEY=y
> -CONFIG_IA64_PAGE_SIZE_64KB=y
> -CONFIG_SMP=y
> -CONFIG_NR_CPUS=64
> -CONFIG_PREEMPT=y
> -CONFIG_IA64_PALINFO=m
> -CONFIG_EFI_VARS=y
> -CONFIG_BINFMT_MISC=y
> -CONFIG_NET=y
> -CONFIG_PACKET=y
> -CONFIG_INET=y
> -CONFIG_IP_MULTICAST=y
> -# CONFIG_IPV6 is not set
> -# CONFIG_STANDALONE is not set
> -CONFIG_BLK_DEV_LOOP=y
> -CONFIG_BLK_DEV_RAM=y
> -CONFIG_SCSI=y
> -CONFIG_BLK_DEV_SD=y
> -CONFIG_SCSI_CONSTANTS=y
> -CONFIG_SCSI_LOGGING=y
> -CONFIG_SCSI_SPI_ATTRS=y
> -# CONFIG_INPUT_KEYBOARD is not set
> -# CONFIG_INPUT_MOUSE is not set
> -# CONFIG_SERIO_I8042 is not set
> -# CONFIG_LEGACY_PTYS is not set
> -CONFIG_EFI_RTC=y
> -# CONFIG_VGA_CONSOLE is not set
> -CONFIG_HP_SIMETH=y
> -CONFIG_HP_SIMSERIAL=y
> -CONFIG_HP_SIMSERIAL_CONSOLE=y
> -CONFIG_HP_SIMSCSI=y
> -CONFIG_EXT2_FS=y
> -CONFIG_EXT3_FS=y
> -# CONFIG_EXT3_FS_XATTR is not set
> -CONFIG_PROC_KCORE=y
> -CONFIG_HUGETLBFS=y
> -CONFIG_NFS_FS=y
> -CONFIG_NFSD=y
> -CONFIG_NFSD_V3=y
> -CONFIG_DEBUG_INFO=y
> -CONFIG_DEBUG_KERNEL=y
> -CONFIG_DEBUG_MUTEXES=y
> diff --git a/arch/ia64/hp/sim/Kconfig b/arch/ia64/hp/sim/Kconfig
> deleted file mode 100644
> index 56fb4f1d4f7c..000000000000
> --- a/arch/ia64/hp/sim/Kconfig
> +++ /dev/null
> @@ -1,23 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0
> -
> -menu "HP Simulator drivers"
> -	depends on IA64_HP_SIM || IA64_GENERIC
> -
> -config HP_SIMETH
> -	bool "Simulated Ethernet "
> -	depends on NET
> -
> -config HP_SIMSERIAL
> -	bool "Simulated serial driver support"
> -	depends on TTY
> -
> -config HP_SIMSERIAL_CONSOLE
> -	bool "Console for HP simulator"
> -	depends on HP_SIMSERIAL
> -
> -config HP_SIMSCSI
> -	bool "Simulated SCSI disk"
> -	depends on SCSI=y
> -
> -endmenu
> -
> diff --git a/arch/ia64/hp/sim/Makefile b/arch/ia64/hp/sim/Makefile
> deleted file mode 100644
> index 0224a13d2c5b..000000000000
> --- a/arch/ia64/hp/sim/Makefile
> +++ /dev/null
> @@ -1,17 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0
> -#
> -# ia64/platform/hp/sim/Makefile
> -#
> -# Copyright (C) 2002 Hewlett-Packard Co.
> -#	David Mosberger-Tang <davidm@hpl.hp.com>
> -# Copyright (C) 1999 Silicon Graphics, Inc.
> -# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
> -#
> -
> -obj-y := hpsim_irq.o hpsim_setup.o hpsim.o
> -obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
> -
> -obj-$(CONFIG_HP_SIMETH)	+= simeth.o
> -obj-$(CONFIG_HP_SIMSERIAL) += simserial.o
> -obj-$(CONFIG_HP_SIMSERIAL_CONSOLE) += hpsim_console.o
> -obj-$(CONFIG_HP_SIMSCSI) += simscsi.o
> diff --git a/arch/ia64/hp/sim/boot/Makefile b/arch/ia64/hp/sim/boot/Makefile
> deleted file mode 100644
> index df6e9968c845..000000000000
> --- a/arch/ia64/hp/sim/boot/Makefile
> +++ /dev/null
> @@ -1,37 +0,0 @@
> -#
> -# ia64/boot/Makefile
> -#
> -# This file is subject to the terms and conditions of the GNU General Public
> -# License.  See the file "COPYING" in the main directory of this archive
> -# for more details.
> -#
> -# Copyright (C) 1998, 2003 by David Mosberger-Tang <davidm@hpl.hp.com>
> -#
> -
> -targets-$(CONFIG_IA64_HP_SIM)  += bootloader
> -targets := vmlinux.bin vmlinux.gz $(targets-y)
> -
> -quiet_cmd_cptotop = LN      $@
> -      cmd_cptotop = ln -f $< $@
> -
> -vmlinux.gz: $(obj)/vmlinux.gz $(addprefix $(obj)/,$(targets-y))
> -	$(call cmd,cptotop)
> -	@echo '  Kernel: $@ is ready'
> -
> -boot: bootloader
> -
> -bootloader: $(obj)/bootloader
> -	$(call cmd,cptotop)
> -
> -$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
> -	$(call if_changed,gzip)
> -
> -$(obj)/vmlinux.bin: vmlinux FORCE
> -	$(call if_changed,objcopy)
> -
> -
> -LDFLAGS_bootloader = -static -T
> -
> -$(obj)/bootloader: $(src)/bootloader.lds $(obj)/bootloader.o $(obj)/boot_head.o $(obj)/fw-emu.o \
> -                   lib/lib.a arch/ia64/lib/lib.a FORCE
> -	$(call if_changed,ld)
> diff --git a/arch/ia64/hp/sim/boot/boot_head.S b/arch/ia64/hp/sim/boot/boot_head.S
> deleted file mode 100644
> index a7d178fb41e8..000000000000
> --- a/arch/ia64/hp/sim/boot/boot_head.S
> +++ /dev/null
> @@ -1,165 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -/*
> - * Copyright (C) 1998-2003 Hewlett-Packard Co
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - */
> -
> -#include <asm/asmmacro.h>
> -#include <asm/pal.h>
> -
> -	.bss
> -	.align 16
> -stack_mem:
> -	.skip 16834
> -
> -	.text
> -
> -/* This needs to be defined because lib/string.c:strlcat() calls it in case of error... */
> -GLOBAL_ENTRY(printk)
> -	break 0
> -END(printk)
> -
> -GLOBAL_ENTRY(_start)
> -	.prologue
> -	.save rp, r0
> -	.body
> -	movl gp = __gp
> -	movl sp = stack_mem+16384-16
> -	bsw.1
> -	br.call.sptk.many rp=start_bootloader
> -0:	nop 0		  /* dummy nop to make unwinding work */
> -END(_start)
> -
> -/*
> - * Set a break point on this function so that symbols are available to set breakpoints in
> - * the kernel being debugged.
> - */
> -GLOBAL_ENTRY(debug_break)
> -	br.ret.sptk.many b0
> -END(debug_break)
> -
> -GLOBAL_ENTRY(ssc)
> -	.regstk 5,0,0,0
> -	mov r15=in4
> -	break 0x80001
> -	br.ret.sptk.many b0
> -END(ssc)
> -
> -GLOBAL_ENTRY(jmp_to_kernel)
> -	.regstk 2,0,0,0
> -	mov r28=in0
> -	mov b7=in1
> -	br.sptk.few b7
> -END(jmp_to_kernel)
> -
> -/*
> - * r28 contains the index of the PAL function
> - * r29--31 the args
> - * Return values in ret0--3 (r8--11)
> - */
> -GLOBAL_ENTRY(pal_emulator_static)
> -	mov r8=-1
> -	mov r9=256
> -	;;
> -	cmp.gtu p6,p7=r9,r28		/* r28 <= 255? */
> -(p6)	br.cond.sptk.few static
> -	;;
> -	mov r9=512
> -	;;
> -	cmp.gtu p6,p7=r9,r28
> -(p6)	br.cond.sptk.few stacked
> -	;;
> -static:	cmp.eq p6,p7=PAL_PTCE_INFO,r28
> -(p7)	br.cond.sptk.few 1f
> -	;;
> -	mov r8=0			/* status = 0 */
> -	movl r9=0x100000000		/* tc.base */
> -	movl r10=0x0000000200000003	/* count[0], count[1] */
> -	movl r11=0x1000000000002000	/* stride[0], stride[1] */
> -	br.cond.sptk.few rp
> -1:	cmp.eq p6,p7=PAL_FREQ_RATIOS,r28
> -(p7)	br.cond.sptk.few 1f
> -	mov r8=0			/* status = 0 */
> -	movl r9 =0x100000064		/* proc_ratio (1/100) */
> -	movl r10=0x100000100		/* bus_ratio<<32 (1/256) */
> -	movl r11=0x100000064		/* itc_ratio<<32 (1/100) */
> -	;;
> -1:	cmp.eq p6,p7=PAL_RSE_INFO,r28
> -(p7)	br.cond.sptk.few 1f
> -	mov r8=0			/* status = 0 */
> -	mov r9=96			/* num phys stacked */
> -	mov r10=0			/* hints */
> -	mov r11=0
> -	br.cond.sptk.few rp
> -1:	cmp.eq p6,p7=PAL_CACHE_FLUSH,r28		/* PAL_CACHE_FLUSH */
> -(p7)	br.cond.sptk.few 1f
> -	mov r9=ar.lc
> -	movl r8=524288			/* flush 512k million cache lines (16MB) */
> -	;;
> -	mov ar.lc=r8
> -	movl r8=0xe000000000000000
> -	;;
> -.loop:	fc r8
> -	add r8=32,r8
> -	br.cloop.sptk.few .loop
> -	sync.i
> -	;;
> -	srlz.i
> -	;;
> -	mov ar.lc=r9
> -	mov r8=r0
> -	;;
> -1:	cmp.eq p6,p7=PAL_PERF_MON_INFO,r28
> -(p7)	br.cond.sptk.few 1f
> -	mov r8=0			/* status = 0 */
> -	movl r9 =0x08122f04		/* generic=4 width=47 retired=8 cycles=18 */
> -	mov r10=0			/* reserved */
> -	mov r11=0			/* reserved */
> -	mov r16=0xffff			/* implemented PMC */
> -	mov r17=0x3ffff			/* implemented PMD */
> -	add r18=8,r29			/* second index */
> -	;;
> -	st8 [r29]=r16,16		/* store implemented PMC */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	;;
> -	st8 [r29]=r0,16			/* clear remaining bits  */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	;;
> -	st8 [r29]=r17,16		/* store implemented PMD */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	mov r16=0xf0			/* cycles count capable PMC */
> -	;;
> -	st8 [r29]=r0,16			/* clear remaining bits  */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	mov r17=0xf0			/* retired bundles capable PMC */
> -	;;
> -	st8 [r29]=r16,16		/* store cycles capable */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	;;
> -	st8 [r29]=r0,16			/* clear remaining bits  */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	;;
> -	st8 [r29]=r17,16		/* store retired bundle capable */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	;;
> -	st8 [r29]=r0,16			/* clear remaining bits  */
> -	st8 [r18]=r0,16			/* clear remaining bits  */
> -	;;
> -1:	cmp.eq p6,p7=PAL_VM_SUMMARY,r28
> -(p7)	br.cond.sptk.few 1f
> -	mov	r8=0			/* status = 0  */
> -	movl	r9=0x2044040020F1865	/* num_tc_levels=2, num_unique_tcs=4 */
> -					/* max_itr_entry=64, max_dtr_entry=64 */
> -					/* hash_tag_id=2, max_pkr=15 */
> -					/* key_size=24, phys_add_size=50, vw=1 */
> -	movl	r10=0x183C		/* rid_size=24, impl_va_msb=60 */
> -	;;
> -1:	cmp.eq p6,p7=PAL_MEM_ATTRIB,r28
> -(p7)	br.cond.sptk.few 1f
> -	mov	r8=0			/* status = 0 */
> -	mov	r9=0x80|0x01		/* NatPage|WB */
> -	;;
> -1:	br.cond.sptk.few rp
> -stacked:
> -	br.ret.sptk.few rp
> -END(pal_emulator_static)
> diff --git a/arch/ia64/hp/sim/boot/bootloader.c b/arch/ia64/hp/sim/boot/bootloader.c
> deleted file mode 100644
> index 6d804608dc81..000000000000
> --- a/arch/ia64/hp/sim/boot/bootloader.c
> +++ /dev/null
> @@ -1,175 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * arch/ia64/hp/sim/boot/bootloader.c
> - *
> - * Loads an ELF kernel.
> - *
> - * Copyright (C) 1998-2003 Hewlett-Packard Co
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - *	Stephane Eranian <eranian@hpl.hp.com>
> - *
> - * 01/07/99 S.Eranian modified to pass command line arguments to kernel
> - */
> -struct task_struct;	/* forward declaration for elf.h */
> -
> -#include <linux/elf.h>
> -#include <linux/init.h>
> -#include <linux/kernel.h>
> -
> -#include <asm/elf.h>
> -#include <asm/intrinsics.h>
> -#include <asm/pal.h>
> -#include <asm/pgtable.h>
> -#include <asm/sal.h>
> -
> -#include "ssc.h"
> -
> -struct disk_req {
> -	unsigned long addr;
> -	unsigned len;
> -};
> -
> -struct disk_stat {
> -	int fd;
> -	unsigned count;
> -};
> -
> -extern void jmp_to_kernel (unsigned long bp, unsigned long e_entry);
> -extern struct ia64_boot_param *sys_fw_init (const char *args, int arglen);
> -extern void debug_break (void);
> -
> -static void
> -cons_write (const char *buf)
> -{
> -	unsigned long ch;
> -
> -	while ((ch = *buf++) != '\0') {
> -		ssc(ch, 0, 0, 0, SSC_PUTCHAR);
> -		if (ch == '\n')
> -		  ssc('\r', 0, 0, 0, SSC_PUTCHAR);
> -	}
> -}
> -
> -#define MAX_ARGS 32
> -
> -void
> -start_bootloader (void)
> -{
> -	static char mem[4096];
> -	static char buffer[1024];
> -	unsigned long off;
> -	int fd, i;
> -	struct disk_req req;
> -	struct disk_stat stat;
> -	struct elfhdr *elf;
> -	struct elf_phdr *elf_phdr;	/* program header */
> -	unsigned long e_entry, e_phoff, e_phnum;
> -	register struct ia64_boot_param *bp;
> -	char *kpath, *args;
> -	long arglen = 0;
> -
> -	ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
> -
> -	/*
> -	 * S.Eranian: extract the commandline argument from the simulator
> -	 *
> -	 * The expected format is as follows:
> -         *
> -	 *	kernelname args...
> -	 *
> -	 * Both are optional but you can't have the second one without the first.
> -	 */
> -	arglen = ssc((long) buffer, 0, 0, 0, SSC_GET_ARGS);
> -
> -	kpath = "vmlinux";
> -	args = buffer;
> -	if (arglen > 0) {
> -		kpath = buffer;
> -		while (*args != ' ' && *args != '\0')
> -			++args, --arglen;
> -		if (*args == ' ')
> -			*args++ = '\0', --arglen;
> -	}
> -
> -	if (arglen <= 0) {
> -		args = "";
> -		arglen = 1;
> -	}
> -
> -	fd = ssc((long) kpath, 1, 0, 0, SSC_OPEN);
> -
> -	if (fd < 0) {
> -		cons_write(kpath);
> -		cons_write(": file not found, reboot now\n");
> -		for(;;);
> -	}
> -	stat.fd = fd;
> -	off = 0;
> -
> -	req.len = sizeof(mem);
> -	req.addr = (long) mem;
> -	ssc(fd, 1, (long) &req, off, SSC_READ);
> -	ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
> -
> -	elf = (struct elfhdr *) mem;
> -	if (elf->e_ident[0] == 0x7f && strncmp(elf->e_ident + 1, "ELF", 3) != 0) {
> -		cons_write("not an ELF file\n");
> -		return;
> -	}
> -	if (elf->e_type != ET_EXEC) {
> -		cons_write("not an ELF executable\n");
> -		return;
> -	}
> -	if (!elf_check_arch(elf)) {
> -		cons_write("kernel not for this processor\n");
> -		return;
> -	}
> -
> -	e_entry = elf->e_entry;
> -	e_phnum = elf->e_phnum;
> -	e_phoff = elf->e_phoff;
> -
> -	cons_write("loading ");
> -	cons_write(kpath);
> -	cons_write("...\n");
> -
> -	for (i = 0; i < e_phnum; ++i) {
> -		req.len = sizeof(*elf_phdr);
> -		req.addr = (long) mem;
> -		ssc(fd, 1, (long) &req, e_phoff, SSC_READ);
> -		ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
> -		if (stat.count != sizeof(*elf_phdr)) {
> -			cons_write("failed to read phdr\n");
> -			return;
> -		}
> -		e_phoff += sizeof(*elf_phdr);
> -
> -		elf_phdr = (struct elf_phdr *) mem;
> -
> -		if (elf_phdr->p_type != PT_LOAD)
> -			continue;
> -
> -		req.len = elf_phdr->p_filesz;
> -		req.addr = __pa(elf_phdr->p_paddr);
> -		ssc(fd, 1, (long) &req, elf_phdr->p_offset, SSC_READ);
> -		ssc((long) &stat, 0, 0, 0, SSC_WAIT_COMPLETION);
> -		memset((char *)__pa(elf_phdr->p_paddr) + elf_phdr->p_filesz, 0,
> -		       elf_phdr->p_memsz - elf_phdr->p_filesz);
> -	}
> -	ssc(fd, 0, 0, 0, SSC_CLOSE);
> -
> -	cons_write("starting kernel...\n");
> -
> -	/* fake an I/O base address: */
> -	ia64_setreg(_IA64_REG_AR_KR0, 0xffffc000000UL);
> -
> -	bp = sys_fw_init(args, arglen);
> -
> -	ssc(0, (long) kpath, 0, 0, SSC_LOAD_SYMBOLS);
> -
> -	debug_break();
> -	jmp_to_kernel((unsigned long) bp, e_entry);
> -
> -	cons_write("kernel returned!\n");
> -	ssc(-1, 0, 0, 0, SSC_EXIT);
> -}
> diff --git a/arch/ia64/hp/sim/boot/bootloader.lds b/arch/ia64/hp/sim/boot/bootloader.lds
> deleted file mode 100644
> index f3f284d6514c..000000000000
> --- a/arch/ia64/hp/sim/boot/bootloader.lds
> +++ /dev/null
> @@ -1,67 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -OUTPUT_FORMAT("elf64-ia64-little")
> -OUTPUT_ARCH(ia64)
> -ENTRY(_start)
> -SECTIONS
> -{
> -  /* Read-only sections, merged into text segment: */
> -  . = 0x100000;
> -
> -  _text = .;
> -  .text : { *(__ivt_section) *(.text) }
> -  _etext = .;
> -
> -  /* Global data */
> -  _data = .;
> -  .rodata : { *(.rodata) *(.rodata.*) }
> -  .data    : { *(.data) *(.gnu.linkonce.d*) CONSTRUCTORS }
> -  __gp = ALIGN (8) + 0x200000;
> -  .got           : { *(.got.plt) *(.got) }
> -  /* We want the small data sections together, so single-instruction offsets
> -     can access them all, and initialized data all before uninitialized, so
> -     we can shorten the on-disk segment size.  */
> -  .sdata     : { *(.sdata) }
> -  _edata  =  .;
> -
> -  __bss_start = .;
> -  .sbss      : { *(.sbss) *(.scommon) }
> -  .bss       : { *(.bss) *(COMMON) }
> -  . = ALIGN(64 / 8);
> -  __bss_stop = .;
> -  _end = . ;
> -
> -  /* Stabs debugging sections.  */
> -  .stab 0 : { *(.stab) }
> -  .stabstr 0 : { *(.stabstr) }
> -  .stab.excl 0 : { *(.stab.excl) }
> -  .stab.exclstr 0 : { *(.stab.exclstr) }
> -  .stab.index 0 : { *(.stab.index) }
> -  .stab.indexstr 0 : { *(.stab.indexstr) }
> -  .comment 0 : { *(.comment) }
> -  /* DWARF debug sections.
> -     Symbols in the DWARF debugging sections are relative to the beginning
> -     of the section so we begin them at 0.  */
> -  /* DWARF 1 */
> -  .debug          0 : { *(.debug) }
> -  .line           0 : { *(.line) }
> -  /* GNU DWARF 1 extensions */
> -  .debug_srcinfo  0 : { *(.debug_srcinfo) }
> -  .debug_sfnames  0 : { *(.debug_sfnames) }
> -  /* DWARF 1.1 and DWARF 2 */
> -  .debug_aranges  0 : { *(.debug_aranges) }
> -  .debug_pubnames 0 : { *(.debug_pubnames) }
> -  /* DWARF 2 */
> -  .debug_info     0 : { *(.debug_info) }
> -  .debug_abbrev   0 : { *(.debug_abbrev) }
> -  .debug_line     0 : { *(.debug_line) }
> -  .debug_frame    0 : { *(.debug_frame) }
> -  .debug_str      0 : { *(.debug_str) }
> -  .debug_loc      0 : { *(.debug_loc) }
> -  .debug_macinfo  0 : { *(.debug_macinfo) }
> -  /* SGI/MIPS DWARF 2 extensions */
> -  .debug_weaknames 0 : { *(.debug_weaknames) }
> -  .debug_funcnames 0 : { *(.debug_funcnames) }
> -  .debug_typenames 0 : { *(.debug_typenames) }
> -  .debug_varnames  0 : { *(.debug_varnames) }
> -  /* These must appear regardless of  .  */
> -}
> diff --git a/arch/ia64/hp/sim/boot/fw-emu.c b/arch/ia64/hp/sim/boot/fw-emu.c
> deleted file mode 100644
> index 517fb2822e04..000000000000
> --- a/arch/ia64/hp/sim/boot/fw-emu.c
> +++ /dev/null
> @@ -1,374 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * PAL & SAL emulation.
> - *
> - * Copyright (C) 1998-2001 Hewlett-Packard Co
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - */
> -
> -#ifdef CONFIG_PCI
> -# include <linux/pci.h>
> -#endif
> -
> -#include <linux/efi.h>
> -#include <asm/io.h>
> -#include <asm/pal.h>
> -#include <asm/sal.h>
> -#include <asm/setup.h>
> -
> -#include "ssc.h"
> -
> -#define MB	(1024*1024UL)
> -
> -#define SIMPLE_MEMMAP	1
> -
> -#if SIMPLE_MEMMAP
> -# define NUM_MEM_DESCS	4
> -#else
> -# define NUM_MEM_DESCS	16
> -#endif
> -
> -static char fw_mem[(  sizeof(struct ia64_boot_param)
> -		    + sizeof(efi_system_table_t)
> -		    + sizeof(efi_runtime_services_t)
> -		    + 1*sizeof(efi_config_table_t)
> -		    + sizeof(struct ia64_sal_systab)
> -		    + sizeof(struct ia64_sal_desc_entry_point)
> -		    + NUM_MEM_DESCS*(sizeof(efi_memory_desc_t))
> -		    + 1024)] __attribute__ ((aligned (8)));
> -
> -#define SECS_PER_HOUR   (60 * 60)
> -#define SECS_PER_DAY    (SECS_PER_HOUR * 24)
> -
> -/* Compute the `struct tm' representation of *T,
> -   offset OFFSET seconds east of UTC,
> -   and store year, yday, mon, mday, wday, hour, min, sec into *TP.
> -   Return nonzero if successful.  */
> -int
> -offtime (unsigned long t, efi_time_t *tp)
> -{
> -	const unsigned short int __mon_yday[2][13] =
> -	{
> -		/* Normal years.  */
> -		{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
> -		/* Leap years.  */
> -		{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
> -	};
> -	long int days, rem, y;
> -	const unsigned short int *ip;
> -
> -	days = t / SECS_PER_DAY;
> -	rem = t % SECS_PER_DAY;
> -	while (rem < 0) {
> -		rem += SECS_PER_DAY;
> -		--days;
> -	}
> -	while (rem >= SECS_PER_DAY) {
> -		rem -= SECS_PER_DAY;
> -		++days;
> -	}
> -	tp->hour = rem / SECS_PER_HOUR;
> -	rem %= SECS_PER_HOUR;
> -	tp->minute = rem / 60;
> -	tp->second = rem % 60;
> -	/* January 1, 1970 was a Thursday.  */
> -	y = 1970;
> -
> -#	define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
> -#	define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
> -#	define __isleap(year) \
> -	  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
> -
> -	while (days < 0 || days >= (__isleap (y) ? 366 : 365)) {
> -		/* Guess a corrected year, assuming 365 days per year.  */
> -		long int yg = y + days / 365 - (days % 365 < 0);
> -
> -		/* Adjust DAYS and Y to match the guessed year.  */
> -		days -= ((yg - y) * 365 + LEAPS_THRU_END_OF (yg - 1)
> -			 - LEAPS_THRU_END_OF (y - 1));
> -		y = yg;
> -	}
> -	tp->year = y;
> -	ip = __mon_yday[__isleap(y)];
> -	for (y = 11; days < (long int) ip[y]; --y)
> -		continue;
> -	days -= ip[y];
> -	tp->month = y + 1;
> -	tp->day = days + 1;
> -	return 1;
> -}
> -
> -extern void pal_emulator_static (void);
> -
> -/* Macro to emulate SAL call using legacy IN and OUT calls to CF8, CFC etc.. */
> -
> -#define BUILD_CMD(addr)		((0x80000000 | (addr)) & ~3)
> -
> -#define REG_OFFSET(addr)	(0x00000000000000FF & (addr))
> -#define DEVICE_FUNCTION(addr)	(0x000000000000FF00 & (addr))
> -#define BUS_NUMBER(addr)	(0x0000000000FF0000 & (addr))
> -
> -static efi_status_t
> -fw_efi_get_time (efi_time_t *tm, efi_time_cap_t *tc)
> -{
> -#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
> -	struct {
> -		int tv_sec;	/* must be 32bits to work */
> -		int tv_usec;
> -	} tv32bits;
> -
> -	ssc((unsigned long) &tv32bits, 0, 0, 0, SSC_GET_TOD);
> -
> -	memset(tm, 0, sizeof(*tm));
> -	offtime(tv32bits.tv_sec, tm);
> -
> -	if (tc)
> -		memset(tc, 0, sizeof(*tc));
> -#else
> -#	error Not implemented yet...
> -#endif
> -	return EFI_SUCCESS;
> -}
> -
> -static void
> -efi_reset_system (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data)
> -{
> -#if defined(CONFIG_IA64_HP_SIM) || defined(CONFIG_IA64_GENERIC)
> -	ssc(status, 0, 0, 0, SSC_EXIT);
> -#else
> -#	error Not implemented yet...
> -#endif
> -}
> -
> -static efi_status_t
> -efi_unimplemented (void)
> -{
> -	return EFI_UNSUPPORTED;
> -}
> -
> -static struct sal_ret_values
> -sal_emulator (long index, unsigned long in1, unsigned long in2,
> -	      unsigned long in3, unsigned long in4, unsigned long in5,
> -	      unsigned long in6, unsigned long in7)
> -{
> -	long r9  = 0;
> -	long r10 = 0;
> -	long r11 = 0;
> -	long status;
> -
> -	/*
> -	 * Don't do a "switch" here since that gives us code that
> -	 * isn't self-relocatable.
> -	 */
> -	status = 0;
> -	if (index == SAL_FREQ_BASE) {
> -		if (in1 == SAL_FREQ_BASE_PLATFORM)
> -			r9 = 200000000;
> -		else if (in1 == SAL_FREQ_BASE_INTERVAL_TIMER) {
> -			/*
> -			 * Is this supposed to be the cr.itc frequency
> -			 * or something platform specific?  The SAL
> -			 * doc ain't exactly clear on this...
> -			 */
> -			r9 = 700000000;
> -		} else if (in1 == SAL_FREQ_BASE_REALTIME_CLOCK)
> -			r9 = 1;
> -		else
> -			status = -1;
> -	} else if (index == SAL_SET_VECTORS) {
> -		;
> -	} else if (index == SAL_GET_STATE_INFO) {
> -		;
> -	} else if (index == SAL_GET_STATE_INFO_SIZE) {
> -		;
> -	} else if (index == SAL_CLEAR_STATE_INFO) {
> -		;
> -	} else if (index == SAL_MC_RENDEZ) {
> -		;
> -	} else if (index == SAL_MC_SET_PARAMS) {
> -		;
> -	} else if (index == SAL_CACHE_FLUSH) {
> -		;
> -	} else if (index == SAL_CACHE_INIT) {
> -		;
> -#ifdef CONFIG_PCI
> -	} else if (index == SAL_PCI_CONFIG_READ) {
> -		/*
> -		 * in1 contains the PCI configuration address and in2
> -		 * the size of the read.  The value that is read is
> -		 * returned via the general register r9.
> -		 */
> -                outl(BUILD_CMD(in1), 0xCF8);
> -                if (in2 == 1)                           /* Reading byte  */
> -                        r9 = inb(0xCFC + ((REG_OFFSET(in1) & 3)));
> -                else if (in2 == 2)                      /* Reading word  */
> -                        r9 = inw(0xCFC + ((REG_OFFSET(in1) & 2)));
> -                else                                    /* Reading dword */
> -                        r9 = inl(0xCFC);
> -                status = PCIBIOS_SUCCESSFUL;
> -	} else if (index == SAL_PCI_CONFIG_WRITE) {
> -	      	/*
> -		 * in1 contains the PCI configuration address, in2 the
> -		 * size of the write, and in3 the actual value to be
> -		 * written out.
> -		 */
> -                outl(BUILD_CMD(in1), 0xCF8);
> -                if (in2 == 1)                           /* Writing byte  */
> -                        outb(in3, 0xCFC + ((REG_OFFSET(in1) & 3)));
> -                else if (in2 == 2)                      /* Writing word  */
> -                        outw(in3, 0xCFC + ((REG_OFFSET(in1) & 2)));
> -                else                                    /* Writing dword */
> -                        outl(in3, 0xCFC);
> -                status = PCIBIOS_SUCCESSFUL;
> -#endif /* CONFIG_PCI */
> -	} else if (index == SAL_UPDATE_PAL) {
> -		;
> -	} else {
> -		status = -1;
> -	}
> -	return ((struct sal_ret_values) {status, r9, r10, r11});
> -}
> -
> -struct ia64_boot_param *
> -sys_fw_init (const char *args, int arglen)
> -{
> -	efi_system_table_t *efi_systab;
> -	efi_runtime_services_t *efi_runtime;
> -	efi_config_table_t *efi_tables;
> -	struct ia64_sal_systab *sal_systab;
> -	efi_memory_desc_t *efi_memmap, *md;
> -	unsigned long *pal_desc, *sal_desc;
> -	struct ia64_sal_desc_entry_point *sal_ed;
> -	struct ia64_boot_param *bp;
> -	unsigned char checksum = 0;
> -	char *cp, *cmd_line;
> -	int i = 0;
> -#	define MAKE_MD(typ, attr, start, end)		\
> -	do {						\
> -		md = efi_memmap + i++;			\
> -		md->type = typ;				\
> -		md->pad = 0;				\
> -		md->phys_addr = start;			\
> -		md->virt_addr = 0;			\
> -		md->num_pages = (end - start) >> 12;	\
> -		md->attribute = attr;			\
> -	} while (0)
> -
> -	memset(fw_mem, 0, sizeof(fw_mem));
> -
> -	pal_desc = (unsigned long *) &pal_emulator_static;
> -	sal_desc = (unsigned long *) &sal_emulator;
> -
> -	cp = fw_mem;
> -	efi_systab  = (void *) cp; cp += sizeof(*efi_systab);
> -	efi_runtime = (void *) cp; cp += sizeof(*efi_runtime);
> -	efi_tables  = (void *) cp; cp += sizeof(*efi_tables);
> -	sal_systab  = (void *) cp; cp += sizeof(*sal_systab);
> -	sal_ed      = (void *) cp; cp += sizeof(*sal_ed);
> -	efi_memmap  = (void *) cp; cp += NUM_MEM_DESCS*sizeof(*efi_memmap);
> -	bp	    = (void *) cp; cp += sizeof(*bp);
> -	cmd_line    = (void *) cp;
> -
> -	if (args) {
> -		if (arglen >= 1024)
> -			arglen = 1023;
> -		memcpy(cmd_line, args, arglen);
> -	} else {
> -		arglen = 0;
> -	}
> -	cmd_line[arglen] = '\0';
> -
> -	memset(efi_systab, 0, sizeof(*efi_systab));
> -	efi_systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
> -	efi_systab->hdr.revision  = ((1 << 16) | 00);
> -	efi_systab->hdr.headersize = sizeof(efi_systab->hdr);
> -	efi_systab->fw_vendor = __pa("H\0e\0w\0l\0e\0t\0t\0-\0P\0a\0c\0k\0a\0r\0d\0\0");
> -	efi_systab->fw_revision = 1;
> -	efi_systab->runtime = (void *) __pa(efi_runtime);
> -	efi_systab->nr_tables = 1;
> -	efi_systab->tables = __pa(efi_tables);
> -
> -	efi_runtime->hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
> -	efi_runtime->hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
> -	efi_runtime->hdr.headersize = sizeof(efi_runtime->hdr);
> -	efi_runtime->get_time = (void *)__pa(&fw_efi_get_time);
> -	efi_runtime->set_time = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->get_wakeup_time = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->set_wakeup_time = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->set_virtual_address_map = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->get_variable = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->get_next_variable = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->set_variable = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->get_next_high_mono_count = (void *)__pa(&efi_unimplemented);
> -	efi_runtime->reset_system = (void *)__pa(&efi_reset_system);
> -
> -	efi_tables->guid = SAL_SYSTEM_TABLE_GUID;
> -	efi_tables->table = __pa(sal_systab);
> -
> -	/* fill in the SAL system table: */
> -	memcpy(sal_systab->signature, "SST_", 4);
> -	sal_systab->size = sizeof(*sal_systab);
> -	sal_systab->sal_rev_minor = 1;
> -	sal_systab->sal_rev_major = 0;
> -	sal_systab->entry_count = 1;
> -
> -#ifdef CONFIG_IA64_GENERIC
> -        strcpy(sal_systab->oem_id, "Generic");
> -        strcpy(sal_systab->product_id, "IA-64 system");
> -#endif
> -
> -#ifdef CONFIG_IA64_HP_SIM
> -	strcpy(sal_systab->oem_id, "Hewlett-Packard");
> -	strcpy(sal_systab->product_id, "HP-simulator");
> -#endif
> -
> -	/* fill in an entry point: */
> -	sal_ed->type = SAL_DESC_ENTRY_POINT;
> -	sal_ed->pal_proc = __pa(pal_desc[0]);
> -	sal_ed->sal_proc = __pa(sal_desc[0]);
> -	sal_ed->gp = __pa(sal_desc[1]);
> -
> -	for (cp = (char *) sal_systab; cp < (char *) efi_memmap; ++cp)
> -		checksum += *cp;
> -
> -	sal_systab->checksum = -checksum;
> -
> -#if SIMPLE_MEMMAP
> -	/* simulate free memory at physical address zero */
> -	MAKE_MD(EFI_BOOT_SERVICES_DATA,		EFI_MEMORY_WB,    0*MB,    1*MB);
> -	MAKE_MD(EFI_PAL_CODE,			EFI_MEMORY_WB,    1*MB,    2*MB);
> -	MAKE_MD(EFI_CONVENTIONAL_MEMORY,	EFI_MEMORY_WB,    2*MB,  130*MB);
> -	MAKE_MD(EFI_CONVENTIONAL_MEMORY,	EFI_MEMORY_WB, 4096*MB, 4128*MB);
> -#else
> -	MAKE_MD( 4,		   0x9, 0x0000000000000000, 0x0000000000001000);
> -	MAKE_MD( 7,		   0x9, 0x0000000000001000, 0x000000000008a000);
> -	MAKE_MD( 4,		   0x9, 0x000000000008a000, 0x00000000000a0000);
> -	MAKE_MD( 5, 0x8000000000000009, 0x00000000000c0000, 0x0000000000100000);
> -	MAKE_MD( 7,		   0x9, 0x0000000000100000, 0x0000000004400000);
> -	MAKE_MD( 2,		   0x9, 0x0000000004400000, 0x0000000004be5000);
> -	MAKE_MD( 7,		   0x9, 0x0000000004be5000, 0x000000007f77e000);
> -	MAKE_MD( 6, 0x8000000000000009, 0x000000007f77e000, 0x000000007fb94000);
> -	MAKE_MD( 6, 0x8000000000000009, 0x000000007fb94000, 0x000000007fb95000);
> -	MAKE_MD( 6, 0x8000000000000009, 0x000000007fb95000, 0x000000007fc00000);
> -	MAKE_MD(13, 0x8000000000000009, 0x000000007fc00000, 0x000000007fc3a000);
> -	MAKE_MD( 7,		   0x9, 0x000000007fc3a000, 0x000000007fea0000);
> -	MAKE_MD( 5, 0x8000000000000009, 0x000000007fea0000, 0x000000007fea8000);
> -	MAKE_MD( 7,		   0x9, 0x000000007fea8000, 0x000000007feab000);
> -	MAKE_MD( 5, 0x8000000000000009, 0x000000007feab000, 0x000000007ffff000);
> -	MAKE_MD( 7,		   0x9, 0x00000000ff400000, 0x0000000104000000);
> -#endif
> -
> -	bp->efi_systab = __pa(&fw_mem);
> -	bp->efi_memmap = __pa(efi_memmap);
> -	bp->efi_memmap_size = NUM_MEM_DESCS*sizeof(efi_memory_desc_t);
> -	bp->efi_memdesc_size = sizeof(efi_memory_desc_t);
> -	bp->efi_memdesc_version = 1;
> -	bp->command_line = __pa(cmd_line);
> -	bp->console_info.num_cols = 80;
> -	bp->console_info.num_rows = 25;
> -	bp->console_info.orig_x = 0;
> -	bp->console_info.orig_y = 24;
> -	bp->fpswa = 0;
> -
> -	return bp;
> -}
> diff --git a/arch/ia64/hp/sim/boot/ssc.h b/arch/ia64/hp/sim/boot/ssc.h
> deleted file mode 100644
> index 88752c7509e0..000000000000
> --- a/arch/ia64/hp/sim/boot/ssc.h
> +++ /dev/null
> @@ -1,36 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -/*
> - * Copyright (C) 1998-2003 Hewlett-Packard Co
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - *	Stephane Eranian <eranian@hpl.hp.com>
> - */
> -#ifndef ssc_h
> -#define ssc_h
> -
> -/* Simulator system calls: */
> -
> -#define SSC_CONSOLE_INIT		20
> -#define SSC_GETCHAR			21
> -#define SSC_PUTCHAR			31
> -#define SSC_OPEN			50
> -#define SSC_CLOSE			51
> -#define SSC_READ			52
> -#define SSC_WRITE			53
> -#define SSC_GET_COMPLETION		54
> -#define SSC_WAIT_COMPLETION		55
> -#define SSC_CONNECT_INTERRUPT		58
> -#define SSC_GENERATE_INTERRUPT		59
> -#define SSC_SET_PERIODIC_INTERRUPT	60
> -#define SSC_GET_RTC			65
> -#define SSC_EXIT			66
> -#define SSC_LOAD_SYMBOLS		69
> -#define SSC_GET_TOD			74
> -
> -#define SSC_GET_ARGS			75
> -
> -/*
> - * Simulator system call.
> - */
> -extern long ssc (long arg0, long arg1, long arg2, long arg3, int nr);
> -
> -#endif /* ssc_h */
> diff --git a/arch/ia64/hp/sim/hpsim.S b/arch/ia64/hp/sim/hpsim.S
> deleted file mode 100644
> index 44b4d53e1689..000000000000
> --- a/arch/ia64/hp/sim/hpsim.S
> +++ /dev/null
> @@ -1,11 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -#include <asm/asmmacro.h>
> -
> -/*
> - * Simulator system call.
> - */
> -GLOBAL_ENTRY(ia64_ssc)
> -	mov r15=r36
> -	break 0x80001
> -	br.ret.sptk.many rp
> -END(ia64_ssc)
> diff --git a/arch/ia64/hp/sim/hpsim_console.c b/arch/ia64/hp/sim/hpsim_console.c
> deleted file mode 100644
> index bffd9f67a8a1..000000000000
> --- a/arch/ia64/hp/sim/hpsim_console.c
> +++ /dev/null
> @@ -1,77 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Platform dependent support for HP simulator.
> - *
> - * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
> - */
> -
> -#include <linux/init.h>
> -#include <linux/kernel.h>
> -#include <linux/param.h>
> -#include <linux/string.h>
> -#include <linux/types.h>
> -#include <linux/tty.h>
> -#include <linux/kdev_t.h>
> -#include <linux/console.h>
> -
> -#include <asm/delay.h>
> -#include <asm/irq.h>
> -#include <asm/pal.h>
> -#include <asm/machvec.h>
> -#include <asm/pgtable.h>
> -#include <asm/sal.h>
> -#include <asm/hpsim.h>
> -
> -#include "hpsim_ssc.h"
> -
> -static int simcons_init (struct console *, char *);
> -static void simcons_write (struct console *, const char *, unsigned);
> -static struct tty_driver *simcons_console_device (struct console *, int *);
> -
> -static struct console hpsim_cons = {
> -	.name =		"simcons",
> -	.write =	simcons_write,
> -	.device =	simcons_console_device,
> -	.setup =	simcons_init,
> -	.flags =	CON_PRINTBUFFER,
> -	.index =	-1,
> -};
> -
> -static int
> -simcons_init (struct console *cons, char *options)
> -{
> -	return 0;
> -}
> -
> -static void
> -simcons_write (struct console *cons, const char *buf, unsigned count)
> -{
> -	unsigned long ch;
> -
> -	while (count-- > 0) {
> -		ch = *buf++;
> -		ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
> -		if (ch == '\n')
> -		  ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
> -	}
> -}
> -
> -static struct tty_driver *simcons_console_device (struct console *c, int *index)
> -{
> -	*index = c->index;
> -	return hp_simserial_driver;
> -}
> -
> -int simcons_register(void)
> -{
> -	if (!ia64_platform_is("hpsim"))
> -		return 1;
> -
> -	if (hpsim_cons.flags & CON_ENABLED)
> -		return 1;
> -
> -	register_console(&hpsim_cons);
> -	return 0;
> -}
> diff --git a/arch/ia64/hp/sim/hpsim_irq.c b/arch/ia64/hp/sim/hpsim_irq.c
> deleted file mode 100644
> index 2f1cc59650ab..000000000000
> --- a/arch/ia64/hp/sim/hpsim_irq.c
> +++ /dev/null
> @@ -1,76 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Platform dependent support for HP simulator.
> - *
> - * Copyright (C) 1998-2001 Hewlett-Packard Co
> - * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
> - */
> -
> -#include <linux/init.h>
> -#include <linux/kernel.h>
> -#include <linux/sched.h>
> -#include <linux/irq.h>
> -
> -#include "hpsim_ssc.h"
> -
> -static unsigned int
> -hpsim_irq_startup(struct irq_data *data)
> -{
> -	return 0;
> -}
> -
> -static void
> -hpsim_irq_noop(struct irq_data *data)
> -{
> -}
> -
> -static int
> -hpsim_set_affinity_noop(struct irq_data *d, const struct cpumask *b, bool f)
> -{
> -	return 0;
> -}
> -
> -static struct irq_chip irq_type_hp_sim = {
> -	.name =			"hpsim",
> -	.irq_startup =		hpsim_irq_startup,
> -	.irq_shutdown =		hpsim_irq_noop,
> -	.irq_enable =		hpsim_irq_noop,
> -	.irq_disable =		hpsim_irq_noop,
> -	.irq_ack =		hpsim_irq_noop,
> -	.irq_set_affinity =	hpsim_set_affinity_noop,
> -};
> -
> -static void hpsim_irq_set_chip(int irq)
> -{
> -	struct irq_chip *chip = irq_get_chip(irq);
> -
> -	if (chip == &no_irq_chip)
> -		irq_set_chip(irq, &irq_type_hp_sim);
> -}
> -
> -static void hpsim_connect_irq(int intr, int irq)
> -{
> -	ia64_ssc(intr, irq, 0, 0, SSC_CONNECT_INTERRUPT);
> -}
> -
> -int hpsim_get_irq(int intr)
> -{
> -	int irq = assign_irq_vector(AUTO_ASSIGN);
> -
> -	if (irq >= 0) {
> -		hpsim_irq_set_chip(irq);
> -		irq_set_handler(irq, handle_simple_irq);
> -		hpsim_connect_irq(intr, irq);
> -	}
> -
> -	return irq;
> -}
> -
> -void __init
> -hpsim_irq_init (void)
> -{
> -	int i;
> -
> -	for_each_active_irq(i)
> -		hpsim_irq_set_chip(i);
> -}
> diff --git a/arch/ia64/hp/sim/hpsim_machvec.c b/arch/ia64/hp/sim/hpsim_machvec.c
> deleted file mode 100644
> index c21419359185..000000000000
> --- a/arch/ia64/hp/sim/hpsim_machvec.c
> +++ /dev/null
> @@ -1,3 +0,0 @@
> -#define MACHVEC_PLATFORM_NAME		hpsim
> -#define MACHVEC_PLATFORM_HEADER		<asm/machvec_hpsim.h>
> -#include <asm/machvec_init.h>
> diff --git a/arch/ia64/hp/sim/hpsim_setup.c b/arch/ia64/hp/sim/hpsim_setup.c
> deleted file mode 100644
> index 41d21d51dc4d..000000000000
> --- a/arch/ia64/hp/sim/hpsim_setup.c
> +++ /dev/null
> @@ -1,41 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Platform dependent support for HP simulator.
> - *
> - * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
> - */
> -#include <linux/console.h>
> -#include <linux/init.h>
> -#include <linux/kdev_t.h>
> -#include <linux/kernel.h>
> -#include <linux/major.h>
> -#include <linux/param.h>
> -#include <linux/root_dev.h>
> -#include <linux/string.h>
> -#include <linux/types.h>
> -
> -#include <asm/delay.h>
> -#include <asm/irq.h>
> -#include <asm/pal.h>
> -#include <asm/machvec.h>
> -#include <asm/pgtable.h>
> -#include <asm/sal.h>
> -#include <asm/hpsim.h>
> -
> -#include "hpsim_ssc.h"
> -
> -void
> -ia64_ctl_trace (long on)
> -{
> -	ia64_ssc(on, 0, 0, 0, SSC_CTL_TRACE);
> -}
> -
> -void __init
> -hpsim_setup (char **cmdline_p)
> -{
> -	ROOT_DEV = Root_SDA1;		/* default to first SCSI drive */
> -
> -	simcons_register();
> -}
> diff --git a/arch/ia64/hp/sim/hpsim_ssc.h b/arch/ia64/hp/sim/hpsim_ssc.h
> deleted file mode 100644
> index 6fd97a487811..000000000000
> --- a/arch/ia64/hp/sim/hpsim_ssc.h
> +++ /dev/null
> @@ -1,37 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -/*
> - * Platform dependent support for HP simulator.
> - *
> - * Copyright (C) 1998, 1999 Hewlett-Packard Co
> - * Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
> - * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
> - */
> -#ifndef _IA64_PLATFORM_HPSIM_SSC_H
> -#define _IA64_PLATFORM_HPSIM_SSC_H
> -
> -/* Simulator system calls: */
> -
> -#define SSC_CONSOLE_INIT		20
> -#define SSC_GETCHAR			21
> -#define SSC_PUTCHAR			31
> -#define SSC_CONNECT_INTERRUPT		58
> -#define SSC_GENERATE_INTERRUPT		59
> -#define SSC_SET_PERIODIC_INTERRUPT	60
> -#define SSC_GET_RTC			65
> -#define SSC_EXIT			66
> -#define SSC_LOAD_SYMBOLS		69
> -#define SSC_GET_TOD			74
> -#define SSC_CTL_TRACE			76
> -
> -#define SSC_NETDEV_PROBE		100
> -#define SSC_NETDEV_SEND			101
> -#define SSC_NETDEV_RECV			102
> -#define SSC_NETDEV_ATTACH		103
> -#define SSC_NETDEV_DETACH		104
> -
> -/*
> - * Simulator system call.
> - */
> -extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
> -
> -#endif /* _IA64_PLATFORM_HPSIM_SSC_H */
> diff --git a/arch/ia64/hp/sim/simeth.c b/arch/ia64/hp/sim/simeth.c
> deleted file mode 100644
> index f39ef2b4ed72..000000000000
> --- a/arch/ia64/hp/sim/simeth.c
> +++ /dev/null
> @@ -1,510 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Simulated Ethernet Driver
> - *
> - * Copyright (C) 1999-2001, 2003 Hewlett-Packard Co
> - *	Stephane Eranian <eranian@hpl.hp.com>
> - */
> -#include <linux/kernel.h>
> -#include <linux/sched.h>
> -#include <linux/types.h>
> -#include <linux/in.h>
> -#include <linux/string.h>
> -#include <linux/init.h>
> -#include <linux/errno.h>
> -#include <linux/interrupt.h>
> -#include <linux/netdevice.h>
> -#include <linux/etherdevice.h>
> -#include <linux/inetdevice.h>
> -#include <linux/if_ether.h>
> -#include <linux/if_arp.h>
> -#include <linux/skbuff.h>
> -#include <linux/notifier.h>
> -#include <linux/bitops.h>
> -#include <asm/irq.h>
> -#include <asm/hpsim.h>
> -
> -#include "hpsim_ssc.h"
> -
> -#define SIMETH_RECV_MAX	10
> -
> -/*
> - * Maximum possible received frame for Ethernet.
> - * We preallocate an sk_buff of that size to avoid costly
> - * memcpy for temporary buffer into sk_buff. We do basically
> - * what's done in other drivers, like eepro with a ring.
> - * The difference is, of course, that we don't have real DMA !!!
> - */
> -#define SIMETH_FRAME_SIZE	ETH_FRAME_LEN
> -
> -
> -#define NETWORK_INTR			8
> -
> -struct simeth_local {
> -	struct net_device_stats stats;
> -	int 			simfd;	 /* descriptor in the simulator */
> -};
> -
> -static int simeth_probe1(void);
> -static int simeth_open(struct net_device *dev);
> -static int simeth_close(struct net_device *dev);
> -static int simeth_tx(struct sk_buff *skb, struct net_device *dev);
> -static int simeth_rx(struct net_device *dev);
> -static struct net_device_stats *simeth_get_stats(struct net_device *dev);
> -static irqreturn_t simeth_interrupt(int irq, void *dev_id);
> -static void set_multicast_list(struct net_device *dev);
> -static int simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr);
> -
> -static char *simeth_version="0.3";
> -
> -/*
> - * This variable is used to establish a mapping between the Linux/ia64 kernel
> - * and the host linux kernel.
> - *
> - * As of today, we support only one card, even though most of the code
> - * is ready for many more. The mapping is then:
> - *	linux/ia64 -> linux/x86
> - * 	   eth0    -> eth1
> - *
> - * In the future, we some string operations, we could easily support up
> - * to 10 cards (0-9).
> - *
> - * The default mapping can be changed on the kernel command line by
> - * specifying simeth=ethX (or whatever string you want).
> - */
> -static char *simeth_device="eth0";	 /* default host interface to use */
> -
> -
> -
> -static volatile unsigned int card_count; /* how many cards "found" so far */
> -static int simeth_debug;		/* set to 1 to get debug information */
> -
> -/*
> - * Used to catch IFF_UP & IFF_DOWN events
> - */
> -static struct notifier_block simeth_dev_notifier = {
> -	simeth_device_event,
> -	NULL
> -};
> -
> -
> -/*
> - * Function used when using a kernel command line option.
> - *
> - * Format: simeth=interface_name (like eth0)
> - */
> -static int __init
> -simeth_setup(char *str)
> -{
> -	simeth_device = str;
> -	return 1;
> -}
> -
> -__setup("simeth=", simeth_setup);
> -
> -/*
> - * Function used to probe for simeth devices when not installed
> - * as a loadable module
> - */
> -
> -int __init
> -simeth_probe (void)
> -{
> -	int r;
> -
> -	printk(KERN_INFO "simeth: v%s\n", simeth_version);
> -
> -	r = simeth_probe1();
> -
> -	if (r == 0) register_netdevice_notifier(&simeth_dev_notifier);
> -
> -	return r;
> -}
> -
> -static inline int
> -netdev_probe(char *name, unsigned char *ether)
> -{
> -	return ia64_ssc(__pa(name), __pa(ether), 0,0, SSC_NETDEV_PROBE);
> -}
> -
> -
> -static inline int
> -netdev_attach(int fd, int irq, unsigned int ipaddr)
> -{
> -	/* this puts the host interface in the right mode (start interrupting) */
> -	return ia64_ssc(fd, ipaddr, 0,0, SSC_NETDEV_ATTACH);
> -}
> -
> -
> -static inline int
> -netdev_detach(int fd)
> -{
> -	/*
> -	 * inactivate the host interface (don't interrupt anymore) */
> -	return ia64_ssc(fd, 0,0,0, SSC_NETDEV_DETACH);
> -}
> -
> -static inline int
> -netdev_send(int fd, unsigned char *buf, unsigned int len)
> -{
> -	return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_SEND);
> -}
> -
> -static inline int
> -netdev_read(int fd, unsigned char *buf, unsigned int len)
> -{
> -	return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_RECV);
> -}
> -
> -static const struct net_device_ops simeth_netdev_ops = {
> -	.ndo_open		= simeth_open,
> -	.ndo_stop		= simeth_close,
> -	.ndo_start_xmit		= simeth_tx,
> -	.ndo_get_stats		= simeth_get_stats,
> -	.ndo_set_rx_mode	= set_multicast_list, /* not yet used */
> -
> -};
> -
> -/*
> - * Function shared with module code, so cannot be in init section
> - *
> - * So far this function "detects" only one card (test_&_set) but could
> - * be extended easily.
> - *
> - * Return:
> - * 	- -ENODEV is no device found
> - *	- -ENOMEM is no more memory
> - *	- 0 otherwise
> - */
> -static int
> -simeth_probe1(void)
> -{
> -	unsigned char mac_addr[ETH_ALEN];
> -	struct simeth_local *local;
> -	struct net_device *dev;
> -	int fd, err, rc;
> -
> -	/*
> -	 * XXX Fix me
> -	 * let's support just one card for now
> -	 */
> -	if (test_and_set_bit(0, &card_count))
> -		return -ENODEV;
> -
> -	/*
> -	 * check with the simulator for the device
> -	 */
> -	fd = netdev_probe(simeth_device, mac_addr);
> -	if (fd == -1)
> -		return -ENODEV;
> -
> -	dev = alloc_etherdev(sizeof(struct simeth_local));
> -	if (!dev)
> -		return -ENOMEM;
> -
> -	memcpy(dev->dev_addr, mac_addr, sizeof(mac_addr));
> -
> -	local = netdev_priv(dev);
> -	local->simfd = fd; /* keep track of underlying file descriptor */
> -
> -	dev->netdev_ops = &simeth_netdev_ops;
> -
> -	err = register_netdev(dev);
> -	if (err) {
> -		free_netdev(dev);
> -		return err;
> -	}
> -
> -	/*
> -	 * attach the interrupt in the simulator, this does enable interrupts
> -	 * until a netdev_attach() is called
> -	 */
> -	if ((rc = hpsim_get_irq(NETWORK_INTR)) < 0)
> -		panic("%s: out of interrupt vectors!\n", __func__);
> -	dev->irq = rc;
> -
> -	printk(KERN_INFO "%s: hosteth=%s simfd=%d, HwAddr=%pm, IRQ %d\n",
> -	       dev->name, simeth_device, local->simfd, dev->dev_addr, dev->irq);
> -
> -	return 0;
> -}
> -
> -/*
> - * actually binds the device to an interrupt vector
> - */
> -static int
> -simeth_open(struct net_device *dev)
> -{
> -	if (request_irq(dev->irq, simeth_interrupt, 0, "simeth", dev)) {
> -		printk(KERN_WARNING "simeth: unable to get IRQ %d.\n", dev->irq);
> -		return -EAGAIN;
> -	}
> -
> -	netif_start_queue(dev);
> -
> -	return 0;
> -}
> -
> -/* copied from lapbether.c */
> -static __inline__ int dev_is_ethdev(struct net_device *dev)
> -{
> -       return ( dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5));
> -}
> -
> -
> -/*
> - * Handler for IFF_UP or IFF_DOWN
> - *
> - * The reason for that is that we don't want to be interrupted when the
> - * interface is down. There is no way to unconnect in the simualtor. Instead
> - * we use this function to shutdown packet processing in the frame filter
> - * in the simulator. Thus no interrupts are generated
> - *
> - *
> - * That's also the place where we pass the IP address of this device to the
> - * simulator so that that we can start filtering packets for it
> - *
> - * There may be a better way of doing this, but I don't know which yet.
> - */
> -static int
> -simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr)
> -{
> -	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
> -	struct simeth_local *local;
> -	struct in_device *in_dev;
> -	struct in_ifaddr **ifap = NULL;
> -	struct in_ifaddr *ifa = NULL;
> -	int r;
> -
> -
> -	if ( ! dev ) {
> -		printk(KERN_WARNING "simeth_device_event dev=0\n");
> -		return NOTIFY_DONE;
> -	}
> -
> -	if (dev_net(dev) != &init_net)
> -		return NOTIFY_DONE;
> -
> -	if ( event != NETDEV_UP && event != NETDEV_DOWN ) return NOTIFY_DONE;
> -
> -	/*
> -	 * Check whether or not it's for an ethernet device
> -	 *
> -	 * XXX Fixme: This works only as long as we support one
> -	 * type of ethernet device.
> -	 */
> -	if ( !dev_is_ethdev(dev) ) return NOTIFY_DONE;
> -
> -	if ((in_dev=dev->ip_ptr) != NULL) {
> -		for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next)
> -			if (strcmp(dev->name, ifa->ifa_label) == 0) break;
> -	}
> -	if ( ifa == NULL ) {
> -		printk(KERN_ERR "simeth_open: can't find device %s's ifa\n", dev->name);
> -		return NOTIFY_DONE;
> -	}
> -
> -	printk(KERN_INFO "simeth_device_event: %s ipaddr=0x%x\n",
> -	       dev->name, ntohl(ifa->ifa_local));
> -
> -	/*
> -	 * XXX Fix me
> -	 * if the device was up, and we're simply reconfiguring it, not sure
> -	 * we get DOWN then UP.
> -	 */
> -
> -	local = netdev_priv(dev);
> -	/* now do it for real */
> -	r = event == NETDEV_UP ?
> -		netdev_attach(local->simfd, dev->irq, ntohl(ifa->ifa_local)):
> -		netdev_detach(local->simfd);
> -
> -	printk(KERN_INFO "simeth: netdev_attach/detach: event=%s ->%d\n",
> -	       event == NETDEV_UP ? "attach":"detach", r);
> -
> -	return NOTIFY_DONE;
> -}
> -
> -static int
> -simeth_close(struct net_device *dev)
> -{
> -	netif_stop_queue(dev);
> -
> -	free_irq(dev->irq, dev);
> -
> -	return 0;
> -}
> -
> -/*
> - * Only used for debug
> - */
> -static void
> -frame_print(unsigned char *from, unsigned char *frame, int len)
> -{
> -	int i;
> -
> -	printk("%s: (%d) %02x", from, len, frame[0] & 0xff);
> -	for(i=1; i < 6; i++ ) {
> -		printk(":%02x", frame[i] &0xff);
> -	}
> -	printk(" %2x", frame[6] &0xff);
> -	for(i=7; i < 12; i++ ) {
> -		printk(":%02x", frame[i] &0xff);
> -	}
> -	printk(" [%02x%02x]\n", frame[12], frame[13]);
> -
> -	for(i=14; i < len; i++ ) {
> -		printk("%02x ", frame[i] &0xff);
> -		if ( (i%10)==0) printk("\n");
> -	}
> -	printk("\n");
> -}
> -
> -
> -/*
> - * Function used to transmit of frame, very last one on the path before
> - * going to the simulator.
> - */
> -static int
> -simeth_tx(struct sk_buff *skb, struct net_device *dev)
> -{
> -	struct simeth_local *local = netdev_priv(dev);
> -
> -#if 0
> -	/* ensure we have at least ETH_ZLEN bytes (min frame size) */
> -	unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
> -	/* Where do the extra padding bytes comes from inthe skbuff ? */
> -#else
> -	/* the real driver in the host system is going to take care of that
> -	 * or maybe it's the NIC itself.
> -	 */
> -	unsigned int length = skb->len;
> -#endif
> -
> -	local->stats.tx_bytes += skb->len;
> -	local->stats.tx_packets++;
> -
> -
> -	if (simeth_debug > 5) frame_print("simeth_tx", skb->data, length);
> -
> -	netdev_send(local->simfd, skb->data, length);
> -
> -	/*
> -	 * we are synchronous on write, so we don't simulate a
> -	 * trasnmit complete interrupt, thus we don't need to arm a tx
> -	 */
> -
> -	dev_kfree_skb(skb);
> -	return NETDEV_TX_OK;
> -}
> -
> -static inline struct sk_buff *
> -make_new_skb(struct net_device *dev)
> -{
> -	struct sk_buff *nskb;
> -
> -	/*
> -	 * The +2 is used to make sure that the IP header is nicely
> -	 * aligned (on 4byte boundary I assume 14+2=16)
> -	 */
> -	nskb = dev_alloc_skb(SIMETH_FRAME_SIZE + 2);
> -	if ( nskb == NULL ) {
> -		printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
> -		return NULL;
> -	}
> -
> -	skb_reserve(nskb, 2);	/* Align IP on 16 byte boundaries */
> -
> -	skb_put(nskb,SIMETH_FRAME_SIZE);
> -
> -	return nskb;
> -}
> -
> -/*
> - * called from interrupt handler to process a received frame
> - */
> -static int
> -simeth_rx(struct net_device *dev)
> -{
> -	struct simeth_local	*local;
> -	struct sk_buff		*skb;
> -	int			len;
> -	int			rcv_count = SIMETH_RECV_MAX;
> -
> -	local = netdev_priv(dev);
> -	/*
> -	 * the loop concept has been borrowed from other drivers
> -	 * looks to me like it's a throttling thing to avoid pushing to many
> -	 * packets at one time into the stack. Making sure we can process them
> -	 * upstream and make forward progress overall
> -	 */
> -	do {
> -		if ( (skb=make_new_skb(dev)) == NULL ) {
> -			printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
> -			local->stats.rx_dropped++;
> -			return 0;
> -		}
> -		/*
> -		 * Read only one frame at a time
> -		 */
> -		len = netdev_read(local->simfd, skb->data, SIMETH_FRAME_SIZE);
> -		if ( len == 0 ) {
> -			if ( simeth_debug > 0 ) printk(KERN_WARNING "%s: count=%d netdev_read=0\n",
> -						       dev->name, SIMETH_RECV_MAX-rcv_count);
> -			break;
> -		}
> -#if 0
> -		/*
> -		 * XXX Fix me
> -		 * Should really do a csum+copy here
> -		 */
> -		skb_copy_to_linear_data(skb, frame, len);
> -#endif
> -		skb->protocol = eth_type_trans(skb, dev);
> -
> -		if ( simeth_debug > 6 ) frame_print("simeth_rx", skb->data, len);
> -
> -		/*
> -		 * push the packet up & trigger software interrupt
> -		 */
> -		netif_rx(skb);
> -
> -		local->stats.rx_packets++;
> -		local->stats.rx_bytes += len;
> -
> -	} while ( --rcv_count );
> -
> -	return len; /* 0 = nothing left to read, otherwise, we can try again */
> -}
> -
> -/*
> - * Interrupt handler (Yes, we can do it too !!!)
> - */
> -static irqreturn_t
> -simeth_interrupt(int irq, void *dev_id)
> -{
> -	struct net_device *dev = dev_id;
> -
> -	/*
> -	 * very simple loop because we get interrupts only when receiving
> -	 */
> -	while (simeth_rx(dev));
> -	return IRQ_HANDLED;
> -}
> -
> -static struct net_device_stats *
> -simeth_get_stats(struct net_device *dev)
> -{
> -	struct simeth_local *local = netdev_priv(dev);
> -
> -	return &local->stats;
> -}
> -
> -/* fake multicast ability */
> -static void
> -set_multicast_list(struct net_device *dev)
> -{
> -	printk(KERN_WARNING "%s: set_multicast_list called\n", dev->name);
> -}
> -
> -__initcall(simeth_probe);
> diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c
> deleted file mode 100644
> index 0a8a74271173..000000000000
> --- a/arch/ia64/hp/sim/simscsi.c
> +++ /dev/null
> @@ -1,373 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Simulated SCSI driver.
> - *
> - * Copyright (C) 1999, 2001-2003 Hewlett-Packard Co
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - *	Stephane Eranian <eranian@hpl.hp.com>
> - *
> - * 02/01/15 David Mosberger	Updated for v2.5.1
> - * 99/12/18 David Mosberger	Added support for READ10/WRITE10 needed by linux v2.3.33
> - */
> -#include <linux/blkdev.h>
> -#include <linux/init.h>
> -#include <linux/interrupt.h>
> -#include <linux/kernel.h>
> -#include <linux/timer.h>
> -#include <asm/irq.h>
> -#include "hpsim_ssc.h"
> -
> -#include <scsi/scsi.h>
> -#include <scsi/scsi_cmnd.h>
> -#include <scsi/scsi_device.h>
> -#include <scsi/scsi_host.h>
> -
> -#define DEBUG_SIMSCSI	0
> -
> -#define SIMSCSI_REQ_QUEUE_LEN	64
> -#define DEFAULT_SIMSCSI_ROOT	"/var/ski-disks/sd"
> -
> -/* Simulator system calls: */
> -
> -#define SSC_OPEN			50
> -#define SSC_CLOSE			51
> -#define SSC_READ			52
> -#define SSC_WRITE			53
> -#define SSC_GET_COMPLETION		54
> -#define SSC_WAIT_COMPLETION		55
> -
> -#define SSC_WRITE_ACCESS		2
> -#define SSC_READ_ACCESS			1
> -
> -#if DEBUG_SIMSCSI
> -  int simscsi_debug;
> -# define DBG	simscsi_debug
> -#else
> -# define DBG	0
> -#endif
> -
> -static struct Scsi_Host *host;
> -
> -static void simscsi_interrupt (unsigned long val);
> -static DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
> -
> -struct disk_req {
> -	unsigned long addr;
> -	unsigned len;
> -};
> -
> -struct disk_stat {
> -	int fd;
> -	unsigned count;
> -};
> -
> -static int desc[16] = {
> -	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
> -};
> -
> -static struct queue_entry {
> -	struct scsi_cmnd *sc;
> -} queue[SIMSCSI_REQ_QUEUE_LEN];
> -
> -static int rd, wr;
> -static atomic_t num_reqs = ATOMIC_INIT(0);
> -
> -/* base name for default disks */
> -static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
> -
> -#define MAX_ROOT_LEN	128
> -
> -/*
> - * used to setup a new base for disk images
> - * to use /foo/bar/disk[a-z] as disk images
> - * you have to specify simscsi=/foo/bar/disk on the command line
> - */
> -static int __init
> -simscsi_setup (char *s)
> -{
> -	/* XXX Fix me we may need to strcpy() ? */
> -	if (strlen(s) > MAX_ROOT_LEN) {
> -		printk(KERN_ERR "simscsi_setup: prefix too long---using default %s\n",
> -		       simscsi_root);
> -	} else
> -		simscsi_root = s;
> -	return 1;
> -}
> -
> -__setup("simscsi=", simscsi_setup);
> -
> -static void
> -simscsi_interrupt (unsigned long val)
> -{
> -	struct scsi_cmnd *sc;
> -
> -	while ((sc = queue[rd].sc) != NULL) {
> -		atomic_dec(&num_reqs);
> -		queue[rd].sc = NULL;
> -		if (DBG)
> -			printk("simscsi_interrupt: done with %u\n",
> -			       sc->request->tag);
> -		(*sc->scsi_done)(sc);
> -		rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
> -	}
> -}
> -
> -static int
> -simscsi_biosparam (struct scsi_device *sdev, struct block_device *n,
> -		sector_t capacity, int ip[])
> -{
> -	ip[0] = 64;		/* heads */
> -	ip[1] = 32;		/* sectors */
> -	ip[2] = capacity >> 11;	/* cylinders */
> -	return 0;
> -}
> -
> -static void
> -simscsi_sg_readwrite (struct scsi_cmnd *sc, int mode, unsigned long offset)
> -{
> -	int i;
> -	struct scatterlist *sl;
> -	struct disk_stat stat;
> -	struct disk_req req;
> -
> -	stat.fd = desc[sc->device->id];
> -
> -	scsi_for_each_sg(sc, sl, scsi_sg_count(sc), i) {
> -		req.addr = __pa(sg_virt(sl));
> -		req.len  = sl->length;
> -		if (DBG)
> -			printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
> -			       mode == SSC_READ ? "read":"write", req.addr, offset,
> -			       scsi_sg_count(sc) - i, sl->length);
> -		ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
> -		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
> -
> -		/* should not happen in our case */
> -		if (stat.count != req.len) {
> -			sc->result = DID_ERROR << 16;
> -			return;
> -		}
> -		offset +=  sl->length;
> -	}
> -	sc->result = GOOD;
> -}
> -
> -/*
> - * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
> - * commands.
> - * Added 02/26/99 S.Eranian
> - */
> -static void
> -simscsi_readwrite6 (struct scsi_cmnd *sc, int mode)
> -{
> -	unsigned long offset;
> -
> -	offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
> -	simscsi_sg_readwrite(sc, mode, offset);
> -}
> -
> -static size_t
> -simscsi_get_disk_size (int fd)
> -{
> -	struct disk_stat stat;
> -	size_t bit, sectors = 0;
> -	struct disk_req req;
> -	char buf[512];
> -
> -	/*
> -	 * This is a bit kludgey: the simulator doesn't provide a
> -	 * direct way of determining the disk size, so we do a binary
> -	 * search, assuming a maximum disk size of 128GB.
> -	 */
> -	for (bit = (128UL << 30)/512; bit != 0; bit >>= 1) {
> -		req.addr = __pa(&buf);
> -		req.len = sizeof(buf);
> -		ia64_ssc(fd, 1, __pa(&req), ((sectors | bit) - 1)*512, SSC_READ);
> -		stat.fd = fd;
> -		ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
> -		if (stat.count == sizeof(buf))
> -			sectors |= bit;
> -	}
> -	return sectors - 1;	/* return last valid sector number */
> -}
> -
> -static void
> -simscsi_readwrite10 (struct scsi_cmnd *sc, int mode)
> -{
> -	unsigned long offset;
> -
> -	offset = (((unsigned long)sc->cmnd[2] << 24)
> -		| ((unsigned long)sc->cmnd[3] << 16)
> -		| ((unsigned long)sc->cmnd[4] <<  8)
> -		| ((unsigned long)sc->cmnd[5] <<  0))*512UL;
> -	simscsi_sg_readwrite(sc, mode, offset);
> -}
> -
> -static int
> -simscsi_queuecommand_lck (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
> -{
> -	unsigned int target_id = sc->device->id;
> -	char fname[MAX_ROOT_LEN+16];
> -	size_t disk_size;
> -	char *buf;
> -	char localbuf[36];
> -#if DEBUG_SIMSCSI
> -	register long sp asm ("sp");
> -
> -	if (DBG)
> -		printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%u,sp=%lx,done=%p\n",
> -		       target_id, sc->cmnd[0], sc->request->tag, sp, done);
> -#endif
> -
> -	sc->result = DID_BAD_TARGET << 16;
> -	sc->scsi_done = done;
> -	if (target_id <= 15 && sc->device->lun == 0) {
> -		switch (sc->cmnd[0]) {
> -		      case INQUIRY:
> -			if (scsi_bufflen(sc) < 35) {
> -				break;
> -			}
> -			sprintf (fname, "%s%c", simscsi_root, 'a' + target_id);
> -			desc[target_id] = ia64_ssc(__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
> -						   0, 0, SSC_OPEN);
> -			if (desc[target_id] < 0) {
> -				/* disk doesn't exist... */
> -				break;
> -			}
> -			buf = localbuf;
> -			buf[0] = 0;	/* magnetic disk */
> -			buf[1] = 0;	/* not a removable medium */
> -			buf[2] = 2;	/* SCSI-2 compliant device */
> -			buf[3] = 2;	/* SCSI-2 response data format */
> -			buf[4] = 31;	/* additional length (bytes) */
> -			buf[5] = 0;	/* reserved */
> -			buf[6] = 0;	/* reserved */
> -			buf[7] = 0;	/* various flags */
> -			memcpy(buf + 8, "HP      SIMULATED DISK  0.00",  28);
> -			scsi_sg_copy_from_buffer(sc, buf, 36);
> -			sc->result = GOOD;
> -			break;
> -
> -		      case TEST_UNIT_READY:
> -			sc->result = GOOD;
> -			break;
> -
> -		      case READ_6:
> -			if (desc[target_id] < 0 )
> -				break;
> -			simscsi_readwrite6(sc, SSC_READ);
> -			break;
> -
> -		      case READ_10:
> -			if (desc[target_id] < 0 )
> -				break;
> -			simscsi_readwrite10(sc, SSC_READ);
> -			break;
> -
> -		      case WRITE_6:
> -			if (desc[target_id] < 0)
> -				break;
> -			simscsi_readwrite6(sc, SSC_WRITE);
> -			break;
> -
> -		      case WRITE_10:
> -			if (desc[target_id] < 0)
> -				break;
> -			simscsi_readwrite10(sc, SSC_WRITE);
> -			break;
> -
> -		      case READ_CAPACITY:
> -			if (desc[target_id] < 0 || scsi_bufflen(sc) < 8) {
> -				break;
> -			}
> -			buf = localbuf;
> -			disk_size = simscsi_get_disk_size(desc[target_id]);
> -
> -			buf[0] = (disk_size >> 24) & 0xff;
> -			buf[1] = (disk_size >> 16) & 0xff;
> -			buf[2] = (disk_size >>  8) & 0xff;
> -			buf[3] = (disk_size >>  0) & 0xff;
> -			/* set block size of 512 bytes: */
> -			buf[4] = 0;
> -			buf[5] = 0;
> -			buf[6] = 2;
> -			buf[7] = 0;
> -			scsi_sg_copy_from_buffer(sc, buf, 8);
> -			sc->result = GOOD;
> -			break;
> -
> -		      case MODE_SENSE:
> -		      case MODE_SENSE_10:
> -			/* sd.c uses this to determine whether disk does write-caching. */
> -			scsi_sg_copy_from_buffer(sc, (char *)empty_zero_page,
> -						 PAGE_SIZE);
> -			sc->result = GOOD;
> -			break;
> -
> -		      case START_STOP:
> -			printk(KERN_ERR "START_STOP\n");
> -			break;
> -
> -		      default:
> -			panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
> -		}
> -	}
> -	if (sc->result == DID_BAD_TARGET) {
> -		sc->result |= DRIVER_SENSE << 24;
> -		sc->sense_buffer[0] = 0x70;
> -		sc->sense_buffer[2] = 0x00;
> -	}
> -	if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
> -		panic("Attempt to queue command while command is pending!!");
> -	}
> -	atomic_inc(&num_reqs);
> -	queue[wr].sc = sc;
> -	wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
> -
> -	tasklet_schedule(&simscsi_tasklet);
> -	return 0;
> -}
> -
> -static DEF_SCSI_QCMD(simscsi_queuecommand)
> -
> -static int
> -simscsi_host_reset (struct scsi_cmnd *sc)
> -{
> -	printk(KERN_ERR "simscsi_host_reset: not implemented\n");
> -	return 0;
> -}
> -
> -static struct scsi_host_template driver_template = {
> -	.name			= "simulated SCSI host adapter",
> -	.proc_name		= "simscsi",
> -	.queuecommand		= simscsi_queuecommand,
> -	.eh_host_reset_handler	= simscsi_host_reset,
> -	.bios_param		= simscsi_biosparam,
> -	.can_queue		= SIMSCSI_REQ_QUEUE_LEN,
> -	.this_id		= -1,
> -	.sg_tablesize		= SG_ALL,
> -	.max_sectors		= 1024,
> -	.cmd_per_lun		= SIMSCSI_REQ_QUEUE_LEN,
> -	.dma_boundary		= PAGE_SIZE - 1,
> -};
> -
> -static int __init
> -simscsi_init(void)
> -{
> -	int error;
> -
> -	host = scsi_host_alloc(&driver_template, 0);
> -	if (!host)
> -		return -ENOMEM;
> -
> -	error = scsi_add_host(host, NULL);
> -	if (error)
> -		goto free_host;
> -	scsi_scan_host(host);
> -	return 0;
> -
> - free_host:
> -	scsi_host_put(host);
> -	return error;
> -}
> -device_initcall(simscsi_init);
> diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
> deleted file mode 100644
> index 1a338e541334..000000000000
> --- a/arch/ia64/hp/sim/simserial.c
> +++ /dev/null
> @@ -1,521 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * Simulated Serial Driver (fake serial)
> - *
> - * This driver is mostly used for bringup purposes and will go away.
> - * It has a strong dependency on the system console. All outputs
> - * are rerouted to the same facility as the one used by printk which, in our
> - * case means sys_sim.c console (goes via the simulator).
> - *
> - * Copyright (C) 1999-2000, 2002-2003 Hewlett-Packard Co
> - *	Stephane Eranian <eranian@hpl.hp.com>
> - *	David Mosberger-Tang <davidm@hpl.hp.com>
> - */
> -
> -#include <linux/init.h>
> -#include <linux/errno.h>
> -#include <linux/sched.h>
> -#include <linux/sched/debug.h>
> -#include <linux/tty.h>
> -#include <linux/tty_flip.h>
> -#include <linux/major.h>
> -#include <linux/fcntl.h>
> -#include <linux/mm.h>
> -#include <linux/seq_file.h>
> -#include <linux/slab.h>
> -#include <linux/capability.h>
> -#include <linux/circ_buf.h>
> -#include <linux/console.h>
> -#include <linux/irq.h>
> -#include <linux/module.h>
> -#include <linux/serial.h>
> -#include <linux/sysrq.h>
> -#include <linux/uaccess.h>
> -
> -#include <asm/hpsim.h>
> -
> -#include "hpsim_ssc.h"
> -
> -#undef SIMSERIAL_DEBUG	/* define this to get some debug information */
> -
> -#define KEYBOARD_INTR	3	/* must match with simulator! */
> -
> -#define NR_PORTS	1	/* only one port for now */
> -
> -struct serial_state {
> -	struct tty_port port;
> -	struct circ_buf xmit;
> -	int irq;
> -	int x_char;
> -};
> -
> -static struct serial_state rs_table[NR_PORTS];
> -
> -struct tty_driver *hp_simserial_driver;
> -
> -static struct console *console;
> -
> -static void receive_chars(struct tty_port *port)
> -{
> -	unsigned char ch;
> -	static unsigned char seen_esc = 0;
> -
> -	while ( (ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR)) ) {
> -		if (ch == 27 && seen_esc == 0) {
> -			seen_esc = 1;
> -			continue;
> -		} else if (seen_esc == 1 && ch == 'O') {
> -			seen_esc = 2;
> -			continue;
> -		} else if (seen_esc == 2) {
> -			if (ch == 'P') /* F1 */
> -				show_state();
> -#ifdef CONFIG_MAGIC_SYSRQ
> -			if (ch == 'S') { /* F4 */
> -				do {
> -					ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR);
> -				} while (!ch);
> -				handle_sysrq(ch);
> -			}
> -#endif
> -			seen_esc = 0;
> -			continue;
> -		}
> -		seen_esc = 0;
> -
> -		if (tty_insert_flip_char(port, ch, TTY_NORMAL) == 0)
> -			break;
> -	}
> -	tty_flip_buffer_push(port);
> -}
> -
> -/*
> - * This is the serial driver's interrupt routine for a single port
> - */
> -static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
> -{
> -	struct serial_state *info = dev_id;
> -
> -	receive_chars(&info->port);
> -
> -	return IRQ_HANDLED;
> -}
> -
> -/*
> - * -------------------------------------------------------------------
> - * Here ends the serial interrupt routines.
> - * -------------------------------------------------------------------
> - */
> -
> -static int rs_put_char(struct tty_struct *tty, unsigned char ch)
> -{
> -	struct serial_state *info = tty->driver_data;
> -	unsigned long flags;
> -
> -	if (!info->xmit.buf)
> -		return 0;
> -
> -	local_irq_save(flags);
> -	if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
> -		local_irq_restore(flags);
> -		return 0;
> -	}
> -	info->xmit.buf[info->xmit.head] = ch;
> -	info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
> -	local_irq_restore(flags);
> -	return 1;
> -}
> -
> -static void transmit_chars(struct tty_struct *tty, struct serial_state *info,
> -		int *intr_done)
> -{
> -	int count;
> -	unsigned long flags;
> -
> -	local_irq_save(flags);
> -
> -	if (info->x_char) {
> -		char c = info->x_char;
> -
> -		console->write(console, &c, 1);
> -
> -		info->x_char = 0;
> -
> -		goto out;
> -	}
> -
> -	if (info->xmit.head == info->xmit.tail || tty->stopped) {
> -#ifdef SIMSERIAL_DEBUG
> -		printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
> -		       info->xmit.head, info->xmit.tail, tty->stopped);
> -#endif
> -		goto out;
> -	}
> -	/*
> -	 * We removed the loop and try to do it in to chunks. We need
> -	 * 2 operations maximum because it's a ring buffer.
> -	 *
> -	 * First from current to tail if possible.
> -	 * Then from the beginning of the buffer until necessary
> -	 */
> -
> -	count = min(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
> -		    SERIAL_XMIT_SIZE - info->xmit.tail);
> -	console->write(console, info->xmit.buf+info->xmit.tail, count);
> -
> -	info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);
> -
> -	/*
> -	 * We have more at the beginning of the buffer
> -	 */
> -	count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
> -	if (count) {
> -		console->write(console, info->xmit.buf, count);
> -		info->xmit.tail += count;
> -	}
> -out:
> -	local_irq_restore(flags);
> -}
> -
> -static void rs_flush_chars(struct tty_struct *tty)
> -{
> -	struct serial_state *info = tty->driver_data;
> -
> -	if (info->xmit.head == info->xmit.tail || tty->stopped ||
> -			!info->xmit.buf)
> -		return;
> -
> -	transmit_chars(tty, info, NULL);
> -}
> -
> -static int rs_write(struct tty_struct * tty,
> -		    const unsigned char *buf, int count)
> -{
> -	struct serial_state *info = tty->driver_data;
> -	int	c, ret = 0;
> -	unsigned long flags;
> -
> -	if (!info->xmit.buf)
> -		return 0;
> -
> -	local_irq_save(flags);
> -	while (1) {
> -		c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
> -		if (count < c)
> -			c = count;
> -		if (c <= 0) {
> -			break;
> -		}
> -		memcpy(info->xmit.buf + info->xmit.head, buf, c);
> -		info->xmit.head = ((info->xmit.head + c) &
> -				   (SERIAL_XMIT_SIZE-1));
> -		buf += c;
> -		count -= c;
> -		ret += c;
> -	}
> -	local_irq_restore(flags);
> -	/*
> -	 * Hey, we transmit directly from here in our case
> -	 */
> -	if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) &&
> -			!tty->stopped)
> -		transmit_chars(tty, info, NULL);
> -
> -	return ret;
> -}
> -
> -static int rs_write_room(struct tty_struct *tty)
> -{
> -	struct serial_state *info = tty->driver_data;
> -
> -	return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
> -}
> -
> -static int rs_chars_in_buffer(struct tty_struct *tty)
> -{
> -	struct serial_state *info = tty->driver_data;
> -
> -	return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
> -}
> -
> -static void rs_flush_buffer(struct tty_struct *tty)
> -{
> -	struct serial_state *info = tty->driver_data;
> -	unsigned long flags;
> -
> -	local_irq_save(flags);
> -	info->xmit.head = info->xmit.tail = 0;
> -	local_irq_restore(flags);
> -
> -	tty_wakeup(tty);
> -}
> -
> -/*
> - * This function is used to send a high-priority XON/XOFF character to
> - * the device
> - */
> -static void rs_send_xchar(struct tty_struct *tty, char ch)
> -{
> -	struct serial_state *info = tty->driver_data;
> -
> -	info->x_char = ch;
> -	if (ch) {
> -		/*
> -		 * I guess we could call console->write() directly but
> -		 * let's do that for now.
> -		 */
> -		transmit_chars(tty, info, NULL);
> -	}
> -}
> -
> -/*
> - * ------------------------------------------------------------
> - * rs_throttle()
> - *
> - * This routine is called by the upper-layer tty layer to signal that
> - * incoming characters should be throttled.
> - * ------------------------------------------------------------
> - */
> -static void rs_throttle(struct tty_struct * tty)
> -{
> -	if (I_IXOFF(tty))
> -		rs_send_xchar(tty, STOP_CHAR(tty));
> -
> -	printk(KERN_INFO "simrs_throttle called\n");
> -}
> -
> -static void rs_unthrottle(struct tty_struct * tty)
> -{
> -	struct serial_state *info = tty->driver_data;
> -
> -	if (I_IXOFF(tty)) {
> -		if (info->x_char)
> -			info->x_char = 0;
> -		else
> -			rs_send_xchar(tty, START_CHAR(tty));
> -	}
> -	printk(KERN_INFO "simrs_unthrottle called\n");
> -}
> -
> -static int rs_setserial(struct tty_struct *tty, struct serial_struct *ss)
> -{
> -	return 0;
> -}
> -
> -static int rs_getserial(struct tty_struct *tty, struct serial_struct *ss)
> -{
> -	return 0;
> -}
> -
> -static int rs_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
> -{
> -	if ((cmd != TIOCSERCONFIG) && (cmd != TIOCMIWAIT)) {
> -		if (tty_io_error(tty))
> -		    return -EIO;
> -	}
> -
> -	switch (cmd) {
> -	case TIOCMIWAIT:
> -		return 0;
> -	case TIOCSERCONFIG:
> -	case TIOCSERGETLSR: /* Get line status register */
> -		return -EINVAL;
> -	}
> -	return -ENOIOCTLCMD;
> -}
> -
> -/*
> - * This routine will shutdown a serial port; interrupts are disabled, and
> - * DTR is dropped if the hangup on close termio flag is on.
> - */
> -static void shutdown(struct tty_port *port)
> -{
> -	struct serial_state *info = container_of(port, struct serial_state,
> -			port);
> -	unsigned long flags;
> -
> -	local_irq_save(flags);
> -	if (info->irq)
> -		free_irq(info->irq, info);
> -
> -	if (info->xmit.buf) {
> -		free_page((unsigned long) info->xmit.buf);
> -		info->xmit.buf = NULL;
> -	}
> -	local_irq_restore(flags);
> -}
> -
> -static void rs_close(struct tty_struct *tty, struct file * filp)
> -{
> -	struct serial_state *info = tty->driver_data;
> -
> -	tty_port_close(&info->port, tty, filp);
> -}
> -
> -static void rs_hangup(struct tty_struct *tty)
> -{
> -	struct serial_state *info = tty->driver_data;
> -
> -	rs_flush_buffer(tty);
> -	tty_port_hangup(&info->port);
> -}
> -
> -static int activate(struct tty_port *port, struct tty_struct *tty)
> -{
> -	struct serial_state *state = container_of(port, struct serial_state,
> -			port);
> -	unsigned long flags, page;
> -	int retval = 0;
> -
> -	page = get_zeroed_page(GFP_KERNEL);
> -	if (!page)
> -		return -ENOMEM;
> -
> -	local_irq_save(flags);
> -
> -	if (state->xmit.buf)
> -		free_page(page);
> -	else
> -		state->xmit.buf = (unsigned char *) page;
> -
> -	if (state->irq) {
> -		retval = request_irq(state->irq, rs_interrupt_single, 0,
> -				"simserial", state);
> -		if (retval)
> -			goto errout;
> -	}
> -
> -	state->xmit.head = state->xmit.tail = 0;
> -errout:
> -	local_irq_restore(flags);
> -	return retval;
> -}
> -
> -
> -/*
> - * This routine is called whenever a serial port is opened.  It
> - * enables interrupts for a serial port, linking in its async structure into
> - * the IRQ chain.   It also performs the serial-specific
> - * initialization for the tty structure.
> - */
> -static int rs_open(struct tty_struct *tty, struct file * filp)
> -{
> -	struct serial_state *info = rs_table + tty->index;
> -	struct tty_port *port = &info->port;
> -
> -	tty->driver_data = info;
> -	port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
> -
> -	/*
> -	 * figure out which console to use (should be one already)
> -	 */
> -	console = console_drivers;
> -	while (console) {
> -		if ((console->flags & CON_ENABLED) && console->write) break;
> -		console = console->next;
> -	}
> -
> -	return tty_port_open(port, tty, filp);
> -}
> -
> -/*
> - * /proc fs routines....
> - */
> -
> -static int rs_proc_show(struct seq_file *m, void *v)
> -{
> -	int i;
> -
> -	seq_printf(m, "simserinfo:1.0\n");
> -	for (i = 0; i < NR_PORTS; i++)
> -		seq_printf(m, "%d: uart:16550 port:3F8 irq:%d\n",
> -		       i, rs_table[i].irq);
> -	return 0;
> -}
> -
> -static const struct tty_operations hp_ops = {
> -	.open = rs_open,
> -	.close = rs_close,
> -	.write = rs_write,
> -	.put_char = rs_put_char,
> -	.flush_chars = rs_flush_chars,
> -	.write_room = rs_write_room,
> -	.chars_in_buffer = rs_chars_in_buffer,
> -	.flush_buffer = rs_flush_buffer,
> -	.ioctl = rs_ioctl,
> -	.throttle = rs_throttle,
> -	.unthrottle = rs_unthrottle,
> -	.send_xchar = rs_send_xchar,
> -	.set_serial = rs_setserial,
> -	.get_serial = rs_getserial,
> -	.hangup = rs_hangup,
> -	.proc_show = rs_proc_show,
> -};
> -
> -static const struct tty_port_operations hp_port_ops = {
> -	.activate = activate,
> -	.shutdown = shutdown,
> -};
> -
> -static int __init simrs_init(void)
> -{
> -	struct serial_state *state;
> -	int retval;
> -
> -	if (!ia64_platform_is("hpsim"))
> -		return -ENODEV;
> -
> -	hp_simserial_driver = alloc_tty_driver(NR_PORTS);
> -	if (!hp_simserial_driver)
> -		return -ENOMEM;
> -
> -	printk(KERN_INFO "SimSerial driver with no serial options enabled\n");
> -
> -	/* Initialize the tty_driver structure */
> -
> -	hp_simserial_driver->driver_name = "simserial";
> -	hp_simserial_driver->name = "ttyS";
> -	hp_simserial_driver->major = TTY_MAJOR;
> -	hp_simserial_driver->minor_start = 64;
> -	hp_simserial_driver->type = TTY_DRIVER_TYPE_SERIAL;
> -	hp_simserial_driver->subtype = SERIAL_TYPE_NORMAL;
> -	hp_simserial_driver->init_termios = tty_std_termios;
> -	hp_simserial_driver->init_termios.c_cflag =
> -		B9600 | CS8 | CREAD | HUPCL | CLOCAL;
> -	hp_simserial_driver->flags = TTY_DRIVER_REAL_RAW;
> -	tty_set_operations(hp_simserial_driver, &hp_ops);
> -
> -	state = rs_table;
> -	tty_port_init(&state->port);
> -	state->port.ops = &hp_port_ops;
> -	state->port.close_delay = 0; /* XXX really 0? */
> -
> -	retval = hpsim_get_irq(KEYBOARD_INTR);
> -	if (retval < 0) {
> -		printk(KERN_ERR "%s: out of interrupt vectors!\n",
> -				__func__);
> -		goto err_free_tty;
> -	}
> -
> -	state->irq = retval;
> -
> -	/* the port is imaginary */
> -	printk(KERN_INFO "ttyS0 at 0x03f8 (irq = %d) is a 16550\n", state->irq);
> -
> -	tty_port_link_device(&state->port, hp_simserial_driver, 0);
> -	retval = tty_register_driver(hp_simserial_driver);
> -	if (retval) {
> -		printk(KERN_ERR "Couldn't register simserial driver\n");
> -		goto err_free_tty;
> -	}
> -
> -	return 0;
> -err_free_tty:
> -	put_tty_driver(hp_simserial_driver);
> -	tty_port_destroy(&state->port);
> -	return retval;
> -}
> -
> -#ifndef MODULE
> -__initcall(simrs_init);
> -#endif
> diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
> index 80c5ef8f475e..0afb3bc4b4a1 100644
> --- a/arch/ia64/include/asm/acpi.h
> +++ b/arch/ia64/include/asm/acpi.h
> @@ -37,9 +37,7 @@ const char *acpi_get_sysname (void);
>   #else
>   static inline const char *acpi_get_sysname (void)
>   {
> -# if defined (CONFIG_IA64_HP_SIM)
> -	return "hpsim";
> -# elif defined (CONFIG_IA64_HP_ZX1)
> +# if defined (CONFIG_IA64_HP_ZX1)
>   	return "hpzx1";
>   # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
>   	return "hpzx1_swiotlb";
> diff --git a/arch/ia64/include/asm/hpsim.h b/arch/ia64/include/asm/hpsim.h
> deleted file mode 100644
> index 00fbd5cc8ab8..000000000000
> --- a/arch/ia64/include/asm/hpsim.h
> +++ /dev/null
> @@ -1,17 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -#ifndef _ASMIA64_HPSIM_H
> -#define _ASMIA64_HPSIM_H
> -
> -#ifndef CONFIG_HP_SIMSERIAL_CONSOLE
> -static inline int simcons_register(void) { return 1; }
> -#else
> -int simcons_register(void);
> -#endif
> -
> -struct tty_driver;
> -extern struct tty_driver *hp_simserial_driver;
> -
> -extern int hpsim_get_irq(int intr);
> -void ia64_ctl_trace(long on);
> -
> -#endif
> diff --git a/arch/ia64/include/asm/iosapic.h b/arch/ia64/include/asm/iosapic.h
> index f48556cb8afc..a91aeb413e17 100644
> --- a/arch/ia64/include/asm/iosapic.h
> +++ b/arch/ia64/include/asm/iosapic.h
> @@ -52,8 +52,6 @@
>   
>   #ifndef __ASSEMBLY__
>   
> -#ifdef CONFIG_IOSAPIC
> -
>   #define NR_IOSAPICS			256
>   
>   #define iosapic_pcat_compat_init	ia64_native_iosapic_pcat_compat_init
> @@ -103,16 +101,6 @@ extern int __init iosapic_register_platform_intr (u32 int_type,
>   #ifdef CONFIG_NUMA
>   extern void map_iosapic_to_node (unsigned int, int);
>   #endif
> -#else
> -#define iosapic_system_init(pcat_compat)			do { } while (0)
> -#define iosapic_init(address,gsi_base)				(-EINVAL)
> -#define iosapic_remove(gsi_base)				(-ENODEV)
> -#define iosapic_register_intr(gsi,polarity,trigger)		(gsi)
> -#define iosapic_unregister_intr(irq)				do { } while (0)
> -#define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger)	do { } while (0)
> -#define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
> -	polarity,trigger)					(gsi)
> -#endif
>   
>   # endif /* !__ASSEMBLY__ */
>   #endif /* __ASM_IA64_IOSAPIC_H */
> diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
> index f426a9829595..5a9a8af79308 100644
> --- a/arch/ia64/include/asm/machvec.h
> +++ b/arch/ia64/include/asm/machvec.h
> @@ -16,7 +16,6 @@
>   struct device;
>   
>   typedef void ia64_mv_setup_t (char **);
> -typedef void ia64_mv_irq_init_t (void);
>   typedef void ia64_mv_dma_init (void);
>   typedef const struct dma_map_ops *ia64_mv_dma_get_ops(struct device *);
>   
> @@ -27,9 +26,7 @@ machvec_noop (void)
>   
>   extern void machvec_setup (char **);
>   
> -# if defined (CONFIG_IA64_HP_SIM)
> -#  include <asm/machvec_hpsim.h>
> -# elif defined (CONFIG_IA64_DIG)
> +# if defined (CONFIG_IA64_DIG)
>   #  include <asm/machvec_dig.h>
>   # elif defined(CONFIG_IA64_DIG_VTD)
>   #  include <asm/machvec_dig_vtd.h>
> @@ -46,7 +43,6 @@ extern void machvec_setup (char **);
>   # else
>   #  define ia64_platform_name	ia64_mv.name
>   #  define platform_setup	ia64_mv.setup
> -#  define platform_irq_init	ia64_mv.irq_init
>   #  define platform_dma_init		ia64_mv.dma_init
>   #  define platform_dma_get_ops		ia64_mv.dma_get_ops
>   # endif
> @@ -59,7 +55,6 @@ extern void machvec_setup (char **);
>   struct ia64_machine_vector {
>   	const char *name;
>   	ia64_mv_setup_t *setup;
> -	ia64_mv_irq_init_t *irq_init;
>   	ia64_mv_dma_init *dma_init;
>   	ia64_mv_dma_get_ops *dma_get_ops;
>   } __attribute__((__aligned__(16))); /* align attrib? see above comment */
> @@ -68,7 +63,6 @@ struct ia64_machine_vector {
>   {						\
>   	#name,					\
>   	platform_setup,				\
> -	platform_irq_init,			\
>   	platform_dma_init,			\
>   	platform_dma_get_ops,			\
>   }
> @@ -91,9 +85,6 @@ extern const struct dma_map_ops *dma_get_ops(struct device *);
>   #ifndef platform_setup
>   # define platform_setup			machvec_setup
>   #endif
> -#ifndef platform_irq_init
> -# define platform_irq_init		machvec_noop
> -#endif
>   #ifndef platform_dma_init
>   # define platform_dma_init		swiotlb_dma_init
>   #endif
> diff --git a/arch/ia64/include/asm/machvec_hpsim.h b/arch/ia64/include/asm/machvec_hpsim.h
> deleted file mode 100644
> index 056f8405822e..000000000000
> --- a/arch/ia64/include/asm/machvec_hpsim.h
> +++ /dev/null
> @@ -1,19 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -#ifndef _ASM_IA64_MACHVEC_HPSIM_h
> -#define _ASM_IA64_MACHVEC_HPSIM_h
> -
> -extern ia64_mv_setup_t hpsim_setup;
> -extern ia64_mv_irq_init_t hpsim_irq_init;
> -
> -/*
> - * This stuff has dual use!
> - *
> - * For a generic kernel, the macros are used to initialize the
> - * platform's machvec structure.  When compiling a non-generic kernel,
> - * the macros are used directly.
> - */
> -#define ia64_platform_name	"hpsim"
> -#define platform_setup		hpsim_setup
> -#define platform_irq_init	hpsim_irq_init
> -
> -#endif /* _ASM_IA64_MACHVEC_HPSIM_h */
> diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
> index 4ba05140b249..3ada440ff893 100644
> --- a/arch/ia64/kernel/Makefile
> +++ b/arch/ia64/kernel/Makefile
> @@ -12,13 +12,12 @@ extra-y	:= head.o vmlinux.lds
>   obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o	\
>   	 irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o		\
>   	 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
> -	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o
> +	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o
>   
>   obj-$(CONFIG_ACPI)		+= acpi.o acpi-ext.o
>   obj-$(CONFIG_IA64_BRL_EMU)	+= brl_emu.o
>   
>   obj-$(CONFIG_IA64_PALINFO)	+= palinfo.o
> -obj-$(CONFIG_IOSAPIC)		+= iosapic.o
>   obj-$(CONFIG_MODULES)		+= module.o
>   obj-$(CONFIG_SMP)		+= smp.o smpboot.o
>   obj-$(CONFIG_NUMA)		+= numa.o
> diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
> index 1c81ec752b04..e3874734b149 100644
> --- a/arch/ia64/kernel/irq_ia64.c
> +++ b/arch/ia64/kernel/irq_ia64.c
> @@ -53,7 +53,6 @@
>   #define IRQ_USED		(1)
>   #define IRQ_RSVD		(2)
>   
> -/* These can be overridden in platform_irq_init */
>   int ia64_first_device_vector = IA64_DEF_FIRST_DEVICE_VECTOR;
>   int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR;
>   
> @@ -648,7 +647,6 @@ init_IRQ (void)
>   #ifdef CONFIG_PERFMON
>   	pfm_init_percpu();
>   #endif
> -	platform_irq_init();
>   }
>   
>   void
> diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
> index 4dc74500eac5..42ef03ce2fd4 100644
> --- a/arch/ia64/kernel/setup.c
> +++ b/arch/ia64/kernel/setup.c
> @@ -63,7 +63,6 @@
>   #include <asm/smp.h>
>   #include <asm/tlbflush.h>
>   #include <asm/unistd.h>
> -#include <asm/hpsim.h>
>   
>   #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
>   # error "struct cpuinfo_ia64 too big!"
> @@ -461,16 +460,11 @@ io_port_init (void)
>   static inline int __init
>   early_console_setup (char *cmdline)
>   {
> -	int earlycons = 0;
> -
>   #ifdef CONFIG_EFI_PCDP
>   	if (!efi_setup_pcdp_console(cmdline))
> -		earlycons++;
> +		return 0;
>   #endif
> -	if (!simcons_register())
> -		earlycons++;
> -
> -	return (earlycons) ? 0 : -1;
> +	return -1;
>   }
>   
>   static inline void
> @@ -608,9 +602,6 @@ setup_arch (char **cmdline_p)
>   		ia64_mca_init();
>   
>   	platform_setup(cmdline_p);
> -#ifndef CONFIG_IA64_HP_SIM
> -	check_sal_cache_flush();
> -#endif
>   	paging_init();
>   
>   	clear_sched_clock_stable();
> 

^ permalink raw reply	[flat|nested] 31+ messages in thread

* Re: [PATCH 18/28] ia64: remove CONFIG_PCI ifdefs
  2019-08-13  7:25 ` [PATCH 18/28] ia64: remove CONFIG_PCI ifdefs Christoph Hellwig
@ 2019-08-13 21:07   ` Vaden, Tom (HPE Server OS Architecture)
  0 siblings, 0 replies; 31+ messages in thread
From: Vaden, Tom (HPE Server OS Architecture) @ 2019-08-13 21:07 UTC (permalink / raw)
  To: Christoph Hellwig, Tony Luck, Fenghua Yu, Travis, Mike, Sivanich,
	Dimitri
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel



On 8/13/19 3:25 AM, Christoph Hellwig wrote:
> Now that hpsim support is gone, CONFIG_PCI is forced on for ia64, and
> we can remove a few ifdefs for it.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Okay to remove hpsim support
Acked-by: Tom Vaden <tom.vaden@hpe.com>

> ---
>   arch/ia64/Makefile              |  2 +-
>   arch/ia64/hp/common/sba_iommu.c | 10 +---------
>   arch/ia64/include/asm/dma.h     |  6 +-----
>   arch/ia64/kernel/sys_ia64.c     | 18 ------------------
>   arch/ia64/mm/init.c             |  2 --
>   5 files changed, 3 insertions(+), 35 deletions(-)
> 
> diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
> index 8b866fc1f9cb..c06802799659 100644
> --- a/arch/ia64/Makefile
> +++ b/arch/ia64/Makefile
> @@ -57,7 +57,7 @@ core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
>   core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
>   core-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
>   
> -drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
> +drivers-y			+= arch/ia64/pci/
>   drivers-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/
>   drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
>   drivers-$(CONFIG_IA64_GENERIC)	+= arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/uv/
> diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
> index 3d24cc43385b..18321ce8bfa0 100644
> --- a/arch/ia64/hp/common/sba_iommu.c
> +++ b/arch/ia64/hp/common/sba_iommu.c
> @@ -251,12 +251,8 @@ static SBA_INLINE void sba_free_range(struct ioc *, dma_addr_t, size_t);
>   static u64 prefetch_spill_page;
>   #endif
>   
> -#ifdef CONFIG_PCI
> -# define GET_IOC(dev)	((dev_is_pci(dev))						\
> +#define GET_IOC(dev)	((dev_is_pci(dev))						\
>   			 ? ((struct ioc *) PCI_CONTROLLER(to_pci_dev(dev))->iommu) : NULL)
> -#else
> -# define GET_IOC(dev)	NULL
> -#endif
>   
>   /*
>   ** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
> @@ -1741,9 +1737,7 @@ ioc_sac_init(struct ioc *ioc)
>   	controller->iommu = ioc;
>   	sac->sysdata = controller;
>   	sac->dma_mask = 0xFFFFFFFFUL;
> -#ifdef CONFIG_PCI
>   	sac->dev.bus = &pci_bus_type;
> -#endif
>   	ioc->sac_only_dev = sac;
>   }
>   
> @@ -2121,13 +2115,11 @@ sba_init(void)
>   	}
>   #endif
>   
> -#ifdef CONFIG_PCI
>   	{
>   		struct pci_bus *b = NULL;
>   		while ((b = pci_find_next_bus(b)) != NULL)
>   			sba_connect_bus(b);
>   	}
> -#endif
>   
>   #ifdef CONFIG_PROC_FS
>   	ioc_proc_init();
> diff --git a/arch/ia64/include/asm/dma.h b/arch/ia64/include/asm/dma.h
> index 23604d6a2cb2..59625e9c1f9c 100644
> --- a/arch/ia64/include/asm/dma.h
> +++ b/arch/ia64/include/asm/dma.h
> @@ -12,11 +12,7 @@
>   
>   extern unsigned long MAX_DMA_ADDRESS;
>   
> -#ifdef CONFIG_PCI
> -  extern int isa_dma_bridge_buggy;
> -#else
> -# define isa_dma_bridge_buggy 	(0)
> -#endif
> +extern int isa_dma_bridge_buggy;
>   
>   #define free_dma(x)
>   
> diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
> index 9ebe1d633abc..e14db25146c2 100644
> --- a/arch/ia64/kernel/sys_ia64.c
> +++ b/arch/ia64/kernel/sys_ia64.c
> @@ -166,21 +166,3 @@ ia64_mremap (unsigned long addr, unsigned long old_len, unsigned long new_len, u
>   		force_successful_syscall_return();
>   	return addr;
>   }
> -
> -#ifndef CONFIG_PCI
> -
> -asmlinkage long
> -sys_pciconfig_read (unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len,
> -		    void *buf)
> -{
> -	return -ENOSYS;
> -}
> -
> -asmlinkage long
> -sys_pciconfig_write (unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len,
> -		     void *buf)
> -{
> -	return -ENOSYS;
> -}
> -
> -#endif /* CONFIG_PCI */
> diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
> index aae75fd7b810..9a4a16439900 100644
> --- a/arch/ia64/mm/init.c
> +++ b/arch/ia64/mm/init.c
> @@ -632,14 +632,12 @@ mem_init (void)
>   	BUG_ON(PTRS_PER_PMD * sizeof(pmd_t) != PAGE_SIZE);
>   	BUG_ON(PTRS_PER_PTE * sizeof(pte_t) != PAGE_SIZE);
>   
> -#ifdef CONFIG_PCI
>   	/*
>   	 * This needs to be called _after_ the command line has been parsed but _before_
>   	 * any drivers that may need the PCI DMA interface are initialized or bootmem has
>   	 * been freed.
>   	 */
>   	platform_dma_init();
> -#endif
>   
>   #ifdef CONFIG_FLATMEM
>   	BUG_ON(!mem_map);
> 

^ permalink raw reply	[flat|nested] 31+ messages in thread

* Re: [PATCH 19/28] ia64: remove CONFIG_ACPI ifdefs
  2019-08-13  7:25 ` [PATCH 19/28] ia64: remove CONFIG_ACPI ifdefs Christoph Hellwig
@ 2019-08-13 21:07   ` Vaden, Tom (HPE Server OS Architecture)
  0 siblings, 0 replies; 31+ messages in thread
From: Vaden, Tom (HPE Server OS Architecture) @ 2019-08-13 21:07 UTC (permalink / raw)
  To: Christoph Hellwig, Tony Luck, Fenghua Yu, Travis, Mike, Sivanich,
	Dimitri
  Cc: Arnd Bergmann, Greg Kroah-Hartman, linux-ia64, linux-ide,
	linux-scsi, linux-kernel



On 8/13/19 3:25 AM, Christoph Hellwig wrote:
> Now that hpsim support is gone, CONFIG_ACPI is forced on for ia64, and
> we can remove a few ifdefs for it.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Okay to remove hpsim support
Acked-by: Tom Vaden <tom.vaden@hpe.com>

> ---
>   arch/ia64/include/asm/acpi.h |  4 ++--
>   arch/ia64/kernel/Makefile    |  4 ++--
>   arch/ia64/kernel/iosapic.c   |  2 --
>   arch/ia64/kernel/irq_ia64.c  |  2 --
>   arch/ia64/kernel/mca.c       | 18 ------------------
>   arch/ia64/kernel/setup.c     | 10 ++++------
>   arch/ia64/kernel/topology.c  |  4 ----
>   7 files changed, 8 insertions(+), 36 deletions(-)
> 
> diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
> index 0afb3bc4b4a1..01c1c269aa13 100644
> --- a/arch/ia64/include/asm/acpi.h
> +++ b/arch/ia64/include/asm/acpi.h
> @@ -17,7 +17,7 @@
>   #include <linux/numa.h>
>   #include <asm/numa.h>
>   
> -#ifdef	CONFIG_ACPI
> +
>   extern int acpi_lapic;
>   #define acpi_disabled 0	/* ACPI always enabled on IA64 */
>   #define acpi_noirq 0	/* ACPI always enabled on IA64 */
> @@ -28,7 +28,7 @@ static inline bool acpi_has_cpu_in_madt(void)
>   {
>   	return !!acpi_lapic;
>   }
> -#endif
> +
>   #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
>   static inline void disable_acpi(void) { }
>   
> diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
> index 3ada440ff893..dbde36702cf2 100644
> --- a/arch/ia64/kernel/Makefile
> +++ b/arch/ia64/kernel/Makefile
> @@ -12,9 +12,9 @@ extra-y	:= head.o vmlinux.lds
>   obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o	\
>   	 irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o		\
>   	 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
> -	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o
> +	 unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o acpi.o \
> +	 acpi-ext.o
>   
> -obj-$(CONFIG_ACPI)		+= acpi.o acpi-ext.o
>   obj-$(CONFIG_IA64_BRL_EMU)	+= brl_emu.o
>   
>   obj-$(CONFIG_IA64_PALINFO)	+= palinfo.o
> diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
> index 9e49fd006859..2d25958a7ed7 100644
> --- a/arch/ia64/kernel/iosapic.c
> +++ b/arch/ia64/kernel/iosapic.c
> @@ -643,10 +643,8 @@ get_target_cpu (unsigned int gsi, int irq)
>   	if (!cpu_online(smp_processor_id()))
>   		return cpu_physical_id(smp_processor_id());
>   
> -#ifdef CONFIG_ACPI
>   	if (cpe_vector > 0 && irq_to_vector(irq) == IA64_CPEP_VECTOR)
>   		return get_cpei_target_cpu();
> -#endif
>   
>   #ifdef CONFIG_NUMA
>   	{
> diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
> index e3874734b149..b989731bbeac 100644
> --- a/arch/ia64/kernel/irq_ia64.c
> +++ b/arch/ia64/kernel/irq_ia64.c
> @@ -633,9 +633,7 @@ ia64_native_register_ipi(void)
>   void __init
>   init_IRQ (void)
>   {
> -#ifdef CONFIG_ACPI
>   	acpi_boot_init();
> -#endif
>   	ia64_register_ipi();
>   	register_percpu_irq(IA64_SPURIOUS_INT_VECTOR, NULL);
>   #ifdef CONFIG_SMP
> diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
> index f72b05fe918b..a7f05883935b 100644
> --- a/arch/ia64/kernel/mca.c
> +++ b/arch/ia64/kernel/mca.c
> @@ -149,9 +149,7 @@ static ia64_mc_info_t		ia64_mc_info;
>   #define CPE_HISTORY_LENGTH    5
>   #define CMC_HISTORY_LENGTH    5
>   
> -#ifdef CONFIG_ACPI
>   static struct timer_list cpe_poll_timer;
> -#endif
>   static struct timer_list cmc_poll_timer;
>   /*
>    * This variable tells whether we are currently in polling mode.
> @@ -532,8 +530,6 @@ int mca_recover_range(unsigned long addr)
>   }
>   EXPORT_SYMBOL_GPL(mca_recover_range);
>   
> -#ifdef CONFIG_ACPI
> -
>   int cpe_vector = -1;
>   int ia64_cpe_irq = -1;
>   
> @@ -595,9 +591,6 @@ ia64_mca_cpe_int_handler (int cpe_irq, void *arg)
>   	return IRQ_HANDLED;
>   }
>   
> -#endif /* CONFIG_ACPI */
> -
> -#ifdef CONFIG_ACPI
>   /*
>    * ia64_mca_register_cpev
>    *
> @@ -625,7 +618,6 @@ ia64_mca_register_cpev (int cpev)
>   	IA64_MCA_DEBUG("%s: corrected platform error "
>   		       "vector %#x registered\n", __func__, cpev);
>   }
> -#endif /* CONFIG_ACPI */
>   
>   /*
>    * ia64_mca_cmc_vector_setup
> @@ -1540,8 +1532,6 @@ ia64_mca_cmc_poll (struct timer_list *unused)
>    * Outputs
>    * 	handled
>    */
> -#ifdef CONFIG_ACPI
> -
>   static irqreturn_t
>   ia64_mca_cpe_int_caller(int cpe_irq, void *arg)
>   {
> @@ -1604,8 +1594,6 @@ ia64_mca_cpe_poll (struct timer_list *unused)
>   							IA64_IPI_DM_INT, 0);
>   }
>   
> -#endif /* CONFIG_ACPI */
> -
>   static int
>   default_monarch_init_process(struct notifier_block *self, unsigned long val, void *data)
>   {
> @@ -1799,7 +1787,6 @@ static struct irqaction mca_wkup_irqaction = {
>   	.name =		"mca_wkup"
>   };
>   
> -#ifdef CONFIG_ACPI
>   static struct irqaction mca_cpe_irqaction = {
>   	.handler =	ia64_mca_cpe_int_handler,
>   	.name =		"cpe_hndlr"
> @@ -1809,7 +1796,6 @@ static struct irqaction mca_cpep_irqaction = {
>   	.handler =	ia64_mca_cpe_int_caller,
>   	.name =		"cpe_poll"
>   };
> -#endif /* CONFIG_ACPI */
>   
>   /* Minimal format of the MCA/INIT stacks.  The pseudo processes that run on
>    * these stacks can never sleep, they cannot return from the kernel to user
> @@ -2081,10 +2067,8 @@ void __init ia64_mca_irq_init(void)
>   	/* Setup the MCA wakeup interrupt vector */
>   	register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction);
>   
> -#ifdef CONFIG_ACPI
>   	/* Setup the CPEI/P handler */
>   	register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction);
> -#endif
>   }
>   
>   /*
> @@ -2112,7 +2096,6 @@ ia64_mca_late_init(void)
>   			  ia64_mca_cpu_online, NULL);
>   	IA64_MCA_DEBUG("%s: CMCI/P setup and enabled.\n", __func__);
>   
> -#ifdef CONFIG_ACPI
>   	/* Setup the CPEI/P vector and handler */
>   	cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
>   	timer_setup(&cpe_poll_timer, ia64_mca_cpe_poll, 0);
> @@ -2143,7 +2126,6 @@ ia64_mca_late_init(void)
>   			IA64_MCA_DEBUG("%s: CPEP setup and enabled.\n", __func__);
>   		}
>   	}
> -#endif
>   
>   	return 0;
>   }
> diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
> index 42ef03ce2fd4..8d47836d932c 100644
> --- a/arch/ia64/kernel/setup.c
> +++ b/arch/ia64/kernel/setup.c
> @@ -537,21 +537,19 @@ setup_arch (char **cmdline_p)
>   	if (early_console_setup(*cmdline_p) == 0)
>   		mark_bsp_online();
>   
> -#ifdef CONFIG_ACPI
>   	/* Initialize the ACPI boot-time table parser */
>   	acpi_table_init();
>   	early_acpi_boot_init();
> -# ifdef CONFIG_ACPI_NUMA
> +#ifdef CONFIG_ACPI_NUMA
>   	acpi_numa_init();
>   	acpi_numa_fixup();
> -#  ifdef CONFIG_ACPI_HOTPLUG_CPU
> +#ifdef CONFIG_ACPI_HOTPLUG_CPU
>   	prefill_possible_map();
> -#  endif
> +#endif
>   	per_cpu_scan_finalize((cpumask_weight(&early_cpu_possible_map) == 0 ?
>   		32 : cpumask_weight(&early_cpu_possible_map)),
>   		additional_cpus > 0 ? additional_cpus : 0);
> -# endif
> -#endif /* CONFIG_APCI_BOOT */
> +#endif /* CONFIG_ACPI_NUMA */
>   
>   #ifdef CONFIG_SMP
>   	smp_build_cpu_map();
> diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
> index e311ee13e61d..09fc385c2acd 100644
> --- a/arch/ia64/kernel/topology.c
> +++ b/arch/ia64/kernel/topology.c
> @@ -42,7 +42,6 @@ EXPORT_SYMBOL_GPL(arch_fix_phys_package_id);
>   #ifdef CONFIG_HOTPLUG_CPU
>   int __ref arch_register_cpu(int num)
>   {
> -#ifdef CONFIG_ACPI
>   	/*
>   	 * If CPEI can be re-targeted or if this is not
>   	 * CPEI target, then it is hotpluggable
> @@ -50,7 +49,6 @@ int __ref arch_register_cpu(int num)
>   	if (can_cpei_retarget() || !is_cpu_cpei_target(num))
>   		sysfs_cpus[num].cpu.hotpluggable = 1;
>   	map_cpu_to_node(num, node_cpuid[num].nid);
> -#endif
>   	return register_cpu(&sysfs_cpus[num].cpu, num);
>   }
>   EXPORT_SYMBOL(arch_register_cpu);
> @@ -58,9 +56,7 @@ EXPORT_SYMBOL(arch_register_cpu);
>   void __ref arch_unregister_cpu(int num)
>   {
>   	unregister_cpu(&sysfs_cpus[num].cpu);
> -#ifdef CONFIG_ACPI
>   	unmap_cpu_from_node(num, cpu_to_node(num));
> -#endif
>   }
>   EXPORT_SYMBOL(arch_unregister_cpu);
>   #else
> 

^ permalink raw reply	[flat|nested] 31+ messages in thread

end of thread, back to index

Thread overview: 31+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-13  7:24 RFC: remove sn2, hpsim and ia64 machvecs v2 Christoph Hellwig
2019-08-13  7:24 ` [PATCH 01/28] char: remove the SGI snsc driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 02/28] char: remove the SGI tiocx/mbcs driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 03/28] char/agp: remove the sgi-agp driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 04/28] ide: remove the sgiioc4 driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 05/28] PCI/hotplug: remove the sgi_hotplug driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 06/28] tty/serial: remove the sn_console driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 07/28] tty/serial: remove the ioc4_serial driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 08/28] tty/serial: remove the ioc3_serial driver Christoph Hellwig
2019-08-13  7:24 ` [PATCH 09/28] char/mspec: remove SGI SN2 support Christoph Hellwig
2019-08-13  7:24 ` [PATCH 10/28] misc/sgi-xp: " Christoph Hellwig
2019-08-13  7:24 ` [PATCH 11/28] qla1280: " Christoph Hellwig
2019-08-13  7:24 ` [PATCH 12/28] qla2xxx: " Christoph Hellwig
2019-08-13  7:24 ` [PATCH 13/28] drivers: remove the SGI SN2 IOC3 base support Christoph Hellwig
2019-08-13  7:25 ` [PATCH 14/28] drivers: remove the SGI SN2 IOC4 " Christoph Hellwig
2019-08-13  7:25 ` [PATCH 16/28] ia64: remove now unused machvec indirections Christoph Hellwig
2019-08-13  7:25 ` [PATCH 17/28] ia64: remove the hpsim platform Christoph Hellwig
2019-08-13 21:06   ` Vaden, Tom (HPE Server OS Architecture)
2019-08-13  7:25 ` [PATCH 18/28] ia64: remove CONFIG_PCI ifdefs Christoph Hellwig
2019-08-13 21:07   ` Vaden, Tom (HPE Server OS Architecture)
2019-08-13  7:25 ` [PATCH 19/28] ia64: remove CONFIG_ACPI ifdefs Christoph Hellwig
2019-08-13 21:07   ` Vaden, Tom (HPE Server OS Architecture)
2019-08-13  7:25 ` [PATCH 20/28] ia64: remove the zx1 swiotlb machvec Christoph Hellwig
2019-08-13  7:25 ` [PATCH 21/28] ia64: remove the SGI UV simulator support Christoph Hellwig
2019-08-13  7:25 ` [PATCH 22/28] ia64: remove the unused sn_coherency_id symbol Christoph Hellwig
2019-08-13  7:25 ` [PATCH 23/28] ia64: rework iommu probing Christoph Hellwig
2019-08-13  7:25 ` [PATCH 24/28] ia64: move the ROOT_DEV setup to common code Christoph Hellwig
2019-08-13  7:25 ` [PATCH 25/28] ia64: move the screen_info " Christoph Hellwig
2019-08-13  7:25 ` [PATCH 26/28] ia64: remove support for machvecs Christoph Hellwig
2019-08-13  7:25 ` [PATCH 27/28] ia64: remove CONFIG_SWIOTLB ifdefs Christoph Hellwig
2019-08-13  7:25 ` [PATCH 28/28] genirq: remove the is_affinity_mask_valid hook Christoph Hellwig

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	git clone --mirror https://lore.kernel.org/linux-ide/0 linux-ide/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-ide linux-ide/ https://lore.kernel.org/linux-ide \
		linux-ide@vger.kernel.org linux-ide@archiver.kernel.org
	public-inbox-index linux-ide

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-ide


AGPL code for this site: git clone https://public-inbox.org/ public-inbox