* [PATCHv6 00/21] scsi: enable reserved commands for LLDDs
@ 2020-07-03 13:01 Hannes Reinecke
2020-07-03 13:01 ` [PATCH 01/21] scsi: drop gdth driver Hannes Reinecke
` (21 more replies)
0 siblings, 22 replies; 38+ messages in thread
From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw)
To: Martin K. Petersen
Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry,
Don Brace, linux-scsi, Hannes Reinecke
Hi all,
quite some drivers use internal commands for various purposes, most
commonly sending TMFs or querying the HBA status.
While these commands use the same submission mechanism than normal
I/O commands, they will not be counted as outstanding commands,
requiring those drivers to implement their own mechanism to figure
out outstanding commands.
The block layer already has the concept of 'reserved' tags for
precisely this purpose, namely non-I/O tags which live off a separate
tag pool. That guarantees that these commands can always be sent,
and won't be influenced by tag starvation from the I/O tag pool.
This patchset enables the use of reserved tags for the SCSI midlayer
by allocating a virtual LUN for the HBA itself which just serves
as a resource to allocate valid tags from.
This removes quite some hacks which were required for some
drivers (eg. fnic or snic), and allows the use of tagset
iterators within the drivers.
The entire patchset can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git reserved-tags.v6
As usual, comments and reviews are welcome.
Changes to v5:
- Remove patch for csiostor
- Warn on normal commands in scsi_put_reserved_cmd()
- Fixup aacraid to not only scsi_put_internal_cmd() for
reserved commands
- Add 'nr_reserved_cmds' field to host template
- Reshuffle patches
Changes to v4:
- Fixup kbuild warning
- Include reviews from Bart
Changes to v3:
- Kill gdth
- Only convert fnic, snic, hpsa, and aacraid
- Drop command emulation for pseudo host device
- make 'can_queue' exclude the number or reserved tags
- Drop persistent commands proposal
- Sanitize host device handling
Changes to v2:
- Update patches from John Garry
- Use virtual LUN as suggested by Christoph
- Improve SCSI Host device to present a real SCSI device
- Implement 'persistent' commands for AENs
- Convert Megaraid SAS
Changes to v1:
- Make scsi_{get, put}_reserved_cmd() for Scsi host
- Previously we separate scsi_{get, put}_reserved_cmd() for sdev
and scsi_host_get_reserved_cmd() for the host
- Fix how Scsi_Host.can_queue is set in the virtio-scsi change
- Drop Scsi_Host.use_reserved_cmd_q
- Drop scsi_is_reserved_cmd()
- Add support in libsas and associated HBA drivers
- Allocate reserved command in slow task
- Switch hisi_sas to use reserved Scsi command
- Reorder the series a little
- Some tidying
Hannes Reinecke (21):
scsi: drop gdth driver
block: add flag for internal commands
scsi: add scsi_{get,put}_internal_cmd() helper
fnic: use internal commands
fnic: use scsi_host_busy_iter() to traverse commands
fnic: check for started requests in fnic_wq_copy_cleanup_handler()
scsi: use real inquiry data when initialising devices
scsi: Use dummy inquiry data for the host device
scsi: revamp host device handling
snic: use reserved commands
snic: use tagset iter for traversing commands
snic: check for started requests in snic_hba_reset_cmpl_handler()
scsi: implement reserved command handling
hpsa: move hpsa_hba_inquiry after scsi_add_host()
hpsa: use reserved commands
hpsa: use scsi_host_busy_iter() to traverse outstanding commands
hpsa: drop refcount field from CommandList
aacraid: move scsi_add_host()
aacraid: store target id in host_scribble
aacraid: use scsi_get_internal_cmd()
aacraid: use scsi_host_busy_iter() to traverse outstanding commands
Documentation/kbuild/makefiles.rst | 4 +-
Documentation/process/magic-number.rst | 2 -
Documentation/scsi/scsi-parameters.rst | 3 -
Documentation/userspace-api/ioctl/ioctl-number.rst | 1 -
block/blk-exec.c | 5 +
drivers/scsi/Kconfig | 14 -
drivers/scsi/Makefile | 2 -
drivers/scsi/aacraid/aachba.c | 137 +-
drivers/scsi/aacraid/aacraid.h | 10 +-
drivers/scsi/aacraid/commctrl.c | 25 +-
drivers/scsi/aacraid/comminit.c | 2 +-
drivers/scsi/aacraid/commsup.c | 109 +-
drivers/scsi/aacraid/dpcsup.c | 2 +-
drivers/scsi/aacraid/linit.c | 175 +-
drivers/scsi/fnic/fnic_scsi.c | 944 ++---
drivers/scsi/gdth.c | 4323 --------------------
drivers/scsi/gdth.h | 981 -----
drivers/scsi/gdth_ioctl.h | 251 --
drivers/scsi/gdth_proc.c | 586 ---
drivers/scsi/gdth_proc.h | 18 -
drivers/scsi/hosts.c | 3 +
drivers/scsi/hpsa.c | 368 +-
drivers/scsi/hpsa.h | 3 +-
drivers/scsi/hpsa_cmd.h | 1 -
drivers/scsi/scsi_devinfo.c | 1 +
drivers/scsi/scsi_lib.c | 55 +-
drivers/scsi/scsi_scan.c | 96 +-
drivers/scsi/scsi_sysfs.c | 3 +-
drivers/scsi/snic/snic.h | 4 +-
drivers/scsi/snic/snic_main.c | 7 +
drivers/scsi/snic/snic_scsi.c | 525 ++-
include/linux/blk_types.h | 2 +
include/linux/blkdev.h | 5 +
include/scsi/scsi_device.h | 4 +
include/scsi/scsi_host.h | 36 +-
35 files changed, 1233 insertions(+), 7474 deletions(-)
delete mode 100644 drivers/scsi/gdth.c
delete mode 100644 drivers/scsi/gdth.h
delete mode 100644 drivers/scsi/gdth_ioctl.h
delete mode 100644 drivers/scsi/gdth_proc.c
delete mode 100644 drivers/scsi/gdth_proc.h
--
2.16.4
^ permalink raw reply [flat|nested] 38+ messages in thread* [PATCH 01/21] scsi: drop gdth driver 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 02/21] block: add flag for internal commands Hannes Reinecke ` (20 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke The gdth driver refers to a SCSI parallel, PCI-only HBA RAID adapter which was manufactured by the now-defunct ICP Vortex company, later acquired by Adaptec and superseded by the aacraid series of controllers. The driver itself would require a major overhaul before any modifications can be attempted, but seeing that it's unlikely to have any users left it should rather be removed completely. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Bart van Assche <bvanassche@acm.org> --- Documentation/kbuild/makefiles.rst | 4 +- Documentation/process/magic-number.rst | 2 - Documentation/scsi/scsi-parameters.rst | 3 - Documentation/userspace-api/ioctl/ioctl-number.rst | 1 - drivers/scsi/Kconfig | 14 - drivers/scsi/Makefile | 2 - drivers/scsi/gdth.c | 4323 -------------------- drivers/scsi/gdth.h | 981 ----- drivers/scsi/gdth_ioctl.h | 251 -- drivers/scsi/gdth_proc.c | 586 --- drivers/scsi/gdth_proc.h | 18 - 11 files changed, 1 insertion(+), 6184 deletions(-) delete mode 100644 drivers/scsi/gdth.c delete mode 100644 drivers/scsi/gdth.h delete mode 100644 drivers/scsi/gdth_ioctl.h delete mode 100644 drivers/scsi/gdth_proc.c delete mode 100644 drivers/scsi/gdth_proc.h diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst index 6515ebc12b6f..c384aabb9bb6 100644 --- a/Documentation/kbuild/makefiles.rst +++ b/Documentation/kbuild/makefiles.rst @@ -379,10 +379,8 @@ more details, with real examples. # drivers/scsi/Makefile CFLAGS_aha152x.o = -DAHA152X_STAT -DAUTOCONF - CFLAGS_gdth.o = # -DDEBUG_GDTH=2 -D__SERIAL__ -D__COM2__ \ - -DGDTH_STATISTICS - These two lines specify compilation flags for aha152x.o and gdth.o. + This line specify compilation flags for aha152x.o. $(AFLAGS_$@) is a similar feature for source files in assembly languages. diff --git a/Documentation/process/magic-number.rst b/Documentation/process/magic-number.rst index eee9b44553b3..cf9b45068f4f 100644 --- a/Documentation/process/magic-number.rst +++ b/Documentation/process/magic-number.rst @@ -100,7 +100,6 @@ USB_SERIAL_PORT_MAGIC 0x7301 usb_serial_port ``drivers/usb/se CG_MAGIC 0x00090255 ufs_cylinder_group ``include/linux/ufs_fs.h`` RPORT_MAGIC 0x00525001 r_port ``drivers/char/rocket_int.h`` LSEMAGIC 0x05091998 lse ``drivers/fc4/fc.c`` -GDTIOCTL_MAGIC 0x06030f07 gdth_iowr_str ``drivers/scsi/gdth_ioctl.h`` RIEBL_MAGIC 0x09051990 ``drivers/net/atarilance.c`` NBD_REQUEST_MAGIC 0x12560953 nbd_request ``include/linux/nbd.h`` RED_MAGIC2 0x170fc2a5 (any) ``mm/slab.c`` @@ -144,7 +143,6 @@ PWC_MAGIC 0x89DC10AB pwc_device ``drivers/usb/me NBD_REPLY_MAGIC 0x96744668 nbd_reply ``include/linux/nbd.h`` ENI155_MAGIC 0xa54b872d midway_eprom ``drivers/atm/eni.h`` CODA_MAGIC 0xC0DAC0DA coda_file_info ``fs/coda/coda_fs_i.h`` -DPMEM_MAGIC 0xc0ffee11 gdt_pci_sram ``drivers/scsi/gdth.h`` YAM_MAGIC 0xF10A7654 yam_port ``drivers/net/hamradio/yam.c`` CCB_MAGIC 0xf2691ad2 ccb ``drivers/scsi/ncr53c8xx.c`` QUEUE_MAGIC_FREE 0xf7e1c9a3 queue_entry ``drivers/scsi/arm/queue.c`` diff --git a/Documentation/scsi/scsi-parameters.rst b/Documentation/scsi/scsi-parameters.rst index 9aba897c97ac..9dfd3050644a 100644 --- a/Documentation/scsi/scsi-parameters.rst +++ b/Documentation/scsi/scsi-parameters.rst @@ -38,9 +38,6 @@ parameters may be changed at runtime by the command See drivers/scsi/BusLogic.c, comment before function BusLogic_ParseDriverOptions(). - gdth= [HW,SCSI] - See header of drivers/scsi/gdth.c. - gvp11= [HW,SCSI] ips= [HW,SCSI] Adaptec / IBM ServeRAID controller diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 59472cd6a11d..4ebc7fe000af 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -157,7 +157,6 @@ Code Seq# Include File Comments 'I' all linux/isdn.h conflict! 'I' 00-0F drivers/isdn/divert/isdn_divert.h conflict! 'I' 40-4F linux/mISDNif.h conflict! -'J' 00-1F drivers/scsi/gdth_ioctl.h 'K' all linux/kd.h 'L' 00-1F linux/loop.h conflict! 'L' 10-1F drivers/scsi/mpt3sas/mpt3sas_ctl.h conflict! diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index e9ff4cd5fbe9..2b5832b5698e 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -669,20 +669,6 @@ config SCSI_FDOMAIN_ISA To compile this driver as a module, choose M here: the module will be called fdomain_isa. -config SCSI_GDTH - tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support" - depends on PCI && SCSI - help - Formerly called GDT SCSI Disk Array Controller Support. - - This is a driver for RAID/SCSI Disk Array Controllers (EISA/ISA/PCI) - manufactured by Intel Corporation/ICP vortex GmbH. It is documented - in the kernel source in <file:drivers/scsi/gdth.c> and - <file:drivers/scsi/gdth.h>. - - To compile this driver as a module, choose M here: the - module will be called gdth. - config SCSI_ISCI tristate "Intel(R) C600 Series Chipset SAS Controller" depends on PCI && SCSI diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index c00e3dd57990..bc3882f5cc69 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -16,7 +16,6 @@ CFLAGS_aha152x.o = -DAHA152X_STAT -DAUTOCONF -CFLAGS_gdth.o = # -DDEBUG_GDTH=2 -D__SERIAL__ -D__COM2__ -DGDTH_STATISTICS obj-$(CONFIG_PCMCIA) += pcmcia/ @@ -103,7 +102,6 @@ obj-$(CONFIG_SCSI_MPT3SAS) += mpt3sas/ obj-$(CONFIG_SCSI_UFSHCD) += ufs/ obj-$(CONFIG_SCSI_ACARD) += atp870u.o obj-$(CONFIG_SCSI_SUNESP) += esp_scsi.o sun_esp.o -obj-$(CONFIG_SCSI_GDTH) += gdth.o obj-$(CONFIG_SCSI_INITIO) += initio.o obj-$(CONFIG_SCSI_INIA100) += a100u2w.o obj-$(CONFIG_SCSI_QLOGICPTI) += qlogicpti.o diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c deleted file mode 100644 index 7f150d52b4a6..000000000000 --- a/drivers/scsi/gdth.c +++ /dev/null @@ -1,4323 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/************************************************************************ - * Linux driver for * - * ICP vortex GmbH: GDT PCI Disk Array Controllers * - * Intel Corporation: Storage RAID Controllers * - * * - * gdth.c * - * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner * - * Copyright (C) 2002-04 Intel Corporation * - * Copyright (C) 2003-06 Adaptec Inc. * - * <achim_leubner@adaptec.com> * - * * - * Additions/Fixes: * - * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com> * - * Johannes Dinner <johannes_dinner@adaptec.com> * - * * - * * - * Linux kernel 2.6.x supported * - * * - ************************************************************************/ - -/* All GDT Disk Array Controllers are fully supported by this driver. - * This includes the PCI SCSI Disk Array Controllers and the - * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete - * list of all controller types. - * - * After the optional list of IRQ values, other possible - * command line options are: - * disable:Y disable driver - * disable:N enable driver - * reserve_mode:0 reserve no drives for the raw service - * reserve_mode:1 reserve all not init., removable drives - * reserve_mode:2 reserve all not init. drives - * reserve_list:h,b,t,l,h,b,t,l,... reserve particular drive(s) with - * h- controller no., b- channel no., - * t- target ID, l- LUN - * reverse_scan:Y reverse scan order for PCI controllers - * reverse_scan:N scan PCI controllers like BIOS - * max_ids:x x - target ID count per channel (1..MAXID) - * rescan:Y rescan all channels/IDs - * rescan:N use all devices found until now - * hdr_channel:x x - number of virtual bus for host drives - * shared_access:Y disable driver reserve/release protocol to - * access a shared resource from several nodes, - * appropriate controller firmware required - * shared_access:N enable driver reserve/release protocol - * force_dma32:Y use only 32 bit DMA mode - * force_dma32:N use 64 bit DMA mode, if supported - * - * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N, - * max_ids:127,rescan:N,hdr_channel:0, - * shared_access:Y,force_dma32:N". - * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y". - * - * When loading the gdth driver as a module, the same options are available. - * You can set the IRQs with "IRQ=...". However, the syntax to specify the - * options changes slightly. You must replace all ',' between options - * with ' ' and all ':' with '=' and you must use - * '1' in place of 'Y' and '0' in place of 'N'. - * - * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0 - * max_ids=127 rescan=0 hdr_channel=0 shared_access=0 - * force_dma32=0" - * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1". - */ - -/* The meaning of the Scsi_Pointer members in this driver is as follows: - * ptr: Chaining - * this_residual: unused - * buffer: unused - * dma_handle: unused - * buffers_residual: unused - * Status: unused - * Message: unused - * have_data_in: unused - * sent_command: unused - * phase: unused - */ - -/* statistics */ -#define GDTH_STATISTICS - -#include <linux/module.h> - -#include <linux/version.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/string.h> -#include <linux/ctype.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/in.h> -#include <linux/proc_fs.h> -#include <linux/time.h> -#include <linux/timer.h> -#include <linux/dma-mapping.h> -#include <linux/list.h> -#include <linux/mutex.h> -#include <linux/slab.h> -#include <linux/reboot.h> - -#include <asm/dma.h> -#include <asm/io.h> -#include <linux/uaccess.h> -#include <linux/spinlock.h> -#include <linux/blkdev.h> -#include <linux/scatterlist.h> - -#include "scsi.h" -#include <scsi/scsi_host.h> -#include "gdth.h" - -static DEFINE_MUTEX(gdth_mutex); -static void gdth_delay(int milliseconds); -static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs); -static irqreturn_t gdth_interrupt(int irq, void *dev_id); -static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, - int gdth_from_wait, int* pIndex); -static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index, - struct scsi_cmnd *scp); -static int gdth_async_event(gdth_ha_str *ha); -static void gdth_log_event(gdth_evt_data *dvr, char *buffer); - -static void gdth_putq(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 priority); -static void gdth_next(gdth_ha_str *ha); -static int gdth_fill_raw_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 b); -static int gdth_special_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp); -static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source, - u16 idx, gdth_evt_data *evt); -static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr); -static void gdth_readapp_event(gdth_ha_str *ha, u8 application, - gdth_evt_str *estr); -static void gdth_clear_events(void); - -static void gdth_copy_internal_data(gdth_ha_str *ha, struct scsi_cmnd *scp, - char *buffer, u16 count); -static int gdth_internal_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp); -static int gdth_fill_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp, - u16 hdrive); - -static void gdth_enable_int(gdth_ha_str *ha); -static int gdth_test_busy(gdth_ha_str *ha); -static int gdth_get_cmd_index(gdth_ha_str *ha); -static void gdth_release_event(gdth_ha_str *ha); -static int gdth_wait(gdth_ha_str *ha, int index,u32 time); -static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode, - u32 p1, u64 p2,u64 p3); -static int gdth_search_drives(gdth_ha_str *ha); -static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive); - -static const char *gdth_ctr_name(gdth_ha_str *ha); - -static int gdth_open(struct inode *inode, struct file *filep); -static int gdth_close(struct inode *inode, struct file *filep); -static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd, - unsigned long arg); - -static void gdth_flush(gdth_ha_str *ha); -static int gdth_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); -static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp, - struct gdth_cmndinfo *cmndinfo); -static void gdth_scsi_done(struct scsi_cmnd *scp); - -#ifdef DEBUG_GDTH -static u8 DebugState = DEBUG_GDTH; -#define TRACE(a) {if (DebugState==1) {printk a;}} -#define TRACE2(a) {if (DebugState==1 || DebugState==2) {printk a;}} -#define TRACE3(a) {if (DebugState!=0) {printk a;}} -#else /* !DEBUG */ -#define TRACE(a) -#define TRACE2(a) -#define TRACE3(a) -#endif - -#ifdef GDTH_STATISTICS -static u32 max_rq=0, max_index=0, max_sg=0; -static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0; -static struct timer_list gdth_timer; -#endif - -#define PTR2USHORT(a) (u16)(unsigned long)(a) -#define GDTOFFSOF(a,b) (size_t)&(((a*)0)->b) -#define INDEX_OK(i,t) ((i)<ARRAY_SIZE(t)) - -#define BUS_L2P(a,b) ((b)>(a)->virt_bus ? (b-1):(b)) - -static u8 gdth_polling; /* polling if TRUE */ -static int gdth_ctr_count = 0; /* controller count */ -static LIST_HEAD(gdth_instances); /* controller list */ -static u8 gdth_write_through = FALSE; /* write through */ -static gdth_evt_str ebuffer[MAX_EVENTS]; /* event buffer */ -static int elastidx; -static int eoldidx; -static int major; - -#define DIN 1 /* IN data direction */ -#define DOU 2 /* OUT data direction */ -#define DNO DIN /* no data transfer */ -#define DUN DIN /* unknown data direction */ -static u8 gdth_direction_tab[0x100] = { - DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN, - DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN, - DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU, - DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU, - DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN, - DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU, - DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN, - DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN -}; - -/* LILO and modprobe/insmod parameters */ -/* disable driver flag */ -static int disable __initdata = 0; -/* reserve flag */ -static int reserve_mode = 1; -/* reserve list */ -static int reserve_list[MAX_RES_ARGS] = -{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, - 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, - 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}; -/* scan order for PCI controllers */ -static int reverse_scan = 0; -/* virtual channel for the host drives */ -static int hdr_channel = 0; -/* max. IDs per channel */ -static int max_ids = MAXID; -/* rescan all IDs */ -static int rescan = 0; -/* shared access */ -static int shared_access = 1; -/* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */ -static int force_dma32 = 0; - -/* parameters for modprobe/insmod */ -module_param(disable, int, 0); -module_param(reserve_mode, int, 0); -module_param_array(reserve_list, int, NULL, 0); -module_param(reverse_scan, int, 0); -module_param(hdr_channel, int, 0); -module_param(max_ids, int, 0); -module_param(rescan, int, 0); -module_param(shared_access, int, 0); -module_param(force_dma32, int, 0); -MODULE_AUTHOR("Achim Leubner"); -MODULE_LICENSE("GPL"); - -/* ioctl interface */ -static const struct file_operations gdth_fops = { - .unlocked_ioctl = gdth_unlocked_ioctl, - .open = gdth_open, - .release = gdth_close, - .llseek = noop_llseek, -}; - -#include "gdth_proc.h" -#include "gdth_proc.c" - -static gdth_ha_str *gdth_find_ha(int hanum) -{ - gdth_ha_str *ha; - - list_for_each_entry(ha, &gdth_instances, list) - if (hanum == ha->hanum) - return ha; - - return NULL; -} - -static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha) -{ - struct gdth_cmndinfo *priv = NULL; - unsigned long flags; - int i; - - spin_lock_irqsave(&ha->smp_lock, flags); - - for (i=0; i<GDTH_MAXCMDS; ++i) { - if (ha->cmndinfo[i].index == 0) { - priv = &ha->cmndinfo[i]; - memset(priv, 0, sizeof(*priv)); - priv->index = i+1; - break; - } - } - - spin_unlock_irqrestore(&ha->smp_lock, flags); - - return priv; -} - -static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv) -{ - BUG_ON(!priv); - priv->index = 0; -} - -static void gdth_delay(int milliseconds) -{ - if (milliseconds == 0) { - udelay(1); - } else { - mdelay(milliseconds); - } -} - -static void gdth_scsi_done(struct scsi_cmnd *scp) -{ - struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp); - int internal_command = cmndinfo->internal_command; - - TRACE2(("gdth_scsi_done()\n")); - - gdth_put_cmndinfo(cmndinfo); - scp->host_scribble = NULL; - - if (internal_command) - complete((struct completion *)scp->request); - else - scp->scsi_done(scp); -} - -static int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, - char *cmnd, int timeout, u32 *info) -{ - gdth_ha_str *ha = shost_priv(sdev->host); - struct scsi_cmnd *scp; - struct gdth_cmndinfo cmndinfo; - DECLARE_COMPLETION_ONSTACK(wait); - int rval; - - scp = kzalloc(sizeof(*scp), GFP_KERNEL); - if (!scp) - return -ENOMEM; - - scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); - if (!scp->sense_buffer) { - kfree(scp); - return -ENOMEM; - } - - scp->device = sdev; - memset(&cmndinfo, 0, sizeof(cmndinfo)); - - /* use request field to save the ptr. to completion struct. */ - scp->request = (struct request *)&wait; - scp->cmd_len = 12; - scp->cmnd = cmnd; - cmndinfo.priority = IOCTL_PRI; - cmndinfo.internal_cmd_str = gdtcmd; - cmndinfo.internal_command = 1; - - TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0])); - __gdth_queuecommand(ha, scp, &cmndinfo); - - wait_for_completion(&wait); - - rval = cmndinfo.status; - if (info) - *info = cmndinfo.info; - kfree(scp->sense_buffer); - kfree(scp); - return rval; -} - -int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd, - int timeout, u32 *info) -{ - struct scsi_device *sdev = scsi_get_host_dev(shost); - int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info); - - scsi_free_host_dev(sdev); - return rval; -} - -static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs) -{ - *cyls = size /HEADS/SECS; - if (*cyls <= MAXCYLS) { - *heads = HEADS; - *secs = SECS; - } else { /* too high for 64*32 */ - *cyls = size /MEDHEADS/MEDSECS; - if (*cyls <= MAXCYLS) { - *heads = MEDHEADS; - *secs = MEDSECS; - } else { /* too high for 127*63 */ - *cyls = size /BIGHEADS/BIGSECS; - *heads = BIGHEADS; - *secs = BIGSECS; - } - } -} - -static bool gdth_search_vortex(u16 device) -{ - if (device <= PCI_DEVICE_ID_VORTEX_GDT6555) - return true; - if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP && - device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP) - return true; - if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX || - device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2) - return true; - return false; -} - -static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out); -static int gdth_pci_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent); -static void gdth_pci_remove_one(struct pci_dev *pdev); -static void gdth_remove_one(gdth_ha_str *ha); - -/* Vortex only makes RAID controllers. - * We do not really want to specify all 550 ids here, so wildcard match. - */ -static const struct pci_device_id gdthtable[] = { - { PCI_VDEVICE(VORTEX, PCI_ANY_ID) }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) }, - { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) }, - { } /* terminate list */ -}; -MODULE_DEVICE_TABLE(pci, gdthtable); - -static struct pci_driver gdth_pci_driver = { - .name = "gdth", - .id_table = gdthtable, - .probe = gdth_pci_init_one, - .remove = gdth_pci_remove_one, -}; - -static void gdth_pci_remove_one(struct pci_dev *pdev) -{ - gdth_ha_str *ha = pci_get_drvdata(pdev); - - list_del(&ha->list); - gdth_remove_one(ha); - - pci_disable_device(pdev); -} - -static int gdth_pci_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - u16 vendor = pdev->vendor; - u16 device = pdev->device; - unsigned long base0, base1, base2; - int rc; - gdth_pci_str gdth_pcistr; - gdth_ha_str *ha = NULL; - - TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n", - gdth_ctr_count, vendor, device)); - - memset(&gdth_pcistr, 0, sizeof(gdth_pcistr)); - - if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device)) - return -ENODEV; - - rc = pci_enable_device(pdev); - if (rc) - return rc; - - if (gdth_ctr_count >= MAXHA) - return -EBUSY; - - /* GDT PCI controller found, resources are already in pdev */ - gdth_pcistr.pdev = pdev; - base0 = pci_resource_flags(pdev, 0); - base1 = pci_resource_flags(pdev, 1); - base2 = pci_resource_flags(pdev, 2); - if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B || /* GDT6000/B */ - device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) { /* MPR */ - if (!(base0 & IORESOURCE_MEM)) - return -ENODEV; - gdth_pcistr.dpmem = pci_resource_start(pdev, 0); - } else { /* GDT6110, GDT6120, .. */ - if (!(base0 & IORESOURCE_MEM) || - !(base2 & IORESOURCE_MEM) || - !(base1 & IORESOURCE_IO)) - return -ENODEV; - gdth_pcistr.dpmem = pci_resource_start(pdev, 2); - gdth_pcistr.io = pci_resource_start(pdev, 1); - } - TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n", - gdth_pcistr.pdev->bus->number, - PCI_SLOT(gdth_pcistr.pdev->devfn), - gdth_pcistr.irq, - gdth_pcistr.dpmem)); - - rc = gdth_pci_probe_one(&gdth_pcistr, &ha); - if (rc) - return rc; - - return 0; -} - -static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr, - gdth_ha_str *ha) -{ - register gdt6_dpram_str __iomem *dp6_ptr; - register gdt6c_dpram_str __iomem *dp6c_ptr; - register gdt6m_dpram_str __iomem *dp6m_ptr; - u32 retries; - u8 prot_ver; - u16 command; - int i, found = FALSE; - - TRACE(("gdth_init_pci()\n")); - - if (pdev->vendor == PCI_VENDOR_ID_INTEL) - ha->oem_id = OEM_ID_INTEL; - else - ha->oem_id = OEM_ID_ICP; - ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8); - ha->stype = (u32)pdev->device; - ha->irq = pdev->irq; - ha->pdev = pdev; - - if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) { /* GDT6000/B */ - TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq)); - ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - /* check and reset interface area */ - dp6_ptr = ha->brd; - writel(DPMEM_MAGIC, &dp6_ptr->u); - if (readl(&dp6_ptr->u) != DPMEM_MAGIC) { - printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", - pcistr->dpmem); - found = FALSE; - for (i = 0xC8000; i < 0xE8000; i += 0x4000) { - iounmap(ha->brd); - ha->brd = ioremap(i, sizeof(u16)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - if (readw(ha->brd) != 0xffff) { - TRACE2(("init_pci_old() address 0x%x busy\n", i)); - continue; - } - iounmap(ha->brd); - pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i); - ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - dp6_ptr = ha->brd; - writel(DPMEM_MAGIC, &dp6_ptr->u); - if (readl(&dp6_ptr->u) == DPMEM_MAGIC) { - printk("GDT-PCI: Use free address at 0x%x\n", i); - found = TRUE; - break; - } - } - if (!found) { - printk("GDT-PCI: No free address found!\n"); - iounmap(ha->brd); - return 0; - } - } - memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u)); - if (readl(&dp6_ptr->u) != 0) { - printk("GDT-PCI: Initialization error (DPMEM write error)\n"); - iounmap(ha->brd); - return 0; - } - - /* disable board interrupts, deinit services */ - writeb(0xff, &dp6_ptr->io.irqdel); - writeb(0x00, &dp6_ptr->io.irqen); - writeb(0x00, &dp6_ptr->u.ic.S_Status); - writeb(0x00, &dp6_ptr->u.ic.Cmd_Index); - - writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]); - writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx); - writeb(0, &dp6_ptr->io.event); - retries = INIT_RETRIES; - gdth_delay(20); - while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) { - if (--retries == 0) { - printk("GDT-PCI: Initialization error (DEINIT failed)\n"); - iounmap(ha->brd); - return 0; - } - gdth_delay(1); - } - prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]); - writeb(0, &dp6_ptr->u.ic.S_Status); - writeb(0xff, &dp6_ptr->io.irqdel); - if (prot_ver != PROTOCOL_VERSION) { - printk("GDT-PCI: Illegal protocol version\n"); - iounmap(ha->brd); - return 0; - } - - ha->type = GDT_PCI; - ha->ic_all_size = sizeof(dp6_ptr->u); - - /* special command to controller BIOS */ - writel(0x00, &dp6_ptr->u.ic.S_Info[0]); - writel(0x00, &dp6_ptr->u.ic.S_Info[1]); - writel(0x00, &dp6_ptr->u.ic.S_Info[2]); - writel(0x00, &dp6_ptr->u.ic.S_Info[3]); - writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx); - writeb(0, &dp6_ptr->io.event); - retries = INIT_RETRIES; - gdth_delay(20); - while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) { - if (--retries == 0) { - printk("GDT-PCI: Initialization error\n"); - iounmap(ha->brd); - return 0; - } - gdth_delay(1); - } - writeb(0, &dp6_ptr->u.ic.S_Status); - writeb(0xff, &dp6_ptr->io.irqdel); - - ha->dma64_support = 0; - - } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */ - ha->plx = (gdt6c_plx_regs *)pcistr->io; - TRACE2(("init_pci_new() dpmem %lx irq %d\n", - pcistr->dpmem,ha->irq)); - ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - iounmap(ha->brd); - return 0; - } - /* check and reset interface area */ - dp6c_ptr = ha->brd; - writel(DPMEM_MAGIC, &dp6c_ptr->u); - if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) { - printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", - pcistr->dpmem); - found = FALSE; - for (i = 0xC8000; i < 0xE8000; i += 0x4000) { - iounmap(ha->brd); - ha->brd = ioremap(i, sizeof(u16)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - if (readw(ha->brd) != 0xffff) { - TRACE2(("init_pci_plx() address 0x%x busy\n", i)); - continue; - } - iounmap(ha->brd); - pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i); - ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - dp6c_ptr = ha->brd; - writel(DPMEM_MAGIC, &dp6c_ptr->u); - if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) { - printk("GDT-PCI: Use free address at 0x%x\n", i); - found = TRUE; - break; - } - } - if (!found) { - printk("GDT-PCI: No free address found!\n"); - iounmap(ha->brd); - return 0; - } - } - memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u)); - if (readl(&dp6c_ptr->u) != 0) { - printk("GDT-PCI: Initialization error (DPMEM write error)\n"); - iounmap(ha->brd); - return 0; - } - - /* disable board interrupts, deinit services */ - outb(0x00,PTR2USHORT(&ha->plx->control1)); - outb(0xff,PTR2USHORT(&ha->plx->edoor_reg)); - - writeb(0x00, &dp6c_ptr->u.ic.S_Status); - writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index); - - writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]); - writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx); - - outb(1,PTR2USHORT(&ha->plx->ldoor_reg)); - - retries = INIT_RETRIES; - gdth_delay(20); - while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) { - if (--retries == 0) { - printk("GDT-PCI: Initialization error (DEINIT failed)\n"); - iounmap(ha->brd); - return 0; - } - gdth_delay(1); - } - prot_ver = (u8)readl(&dp6c_ptr->u.ic.S_Info[0]); - writeb(0, &dp6c_ptr->u.ic.Status); - if (prot_ver != PROTOCOL_VERSION) { - printk("GDT-PCI: Illegal protocol version\n"); - iounmap(ha->brd); - return 0; - } - - ha->type = GDT_PCINEW; - ha->ic_all_size = sizeof(dp6c_ptr->u); - - /* special command to controller BIOS */ - writel(0x00, &dp6c_ptr->u.ic.S_Info[0]); - writel(0x00, &dp6c_ptr->u.ic.S_Info[1]); - writel(0x00, &dp6c_ptr->u.ic.S_Info[2]); - writel(0x00, &dp6c_ptr->u.ic.S_Info[3]); - writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx); - - outb(1,PTR2USHORT(&ha->plx->ldoor_reg)); - - retries = INIT_RETRIES; - gdth_delay(20); - while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) { - if (--retries == 0) { - printk("GDT-PCI: Initialization error\n"); - iounmap(ha->brd); - return 0; - } - gdth_delay(1); - } - writeb(0, &dp6c_ptr->u.ic.S_Status); - - ha->dma64_support = 0; - - } else { /* MPR */ - TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq)); - ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - - /* manipulate config. space to enable DPMEM, start RP controller */ - pci_read_config_word(pdev, PCI_COMMAND, &command); - command |= 6; - pci_write_config_word(pdev, PCI_COMMAND, command); - gdth_delay(1); - - dp6m_ptr = ha->brd; - - /* Ensure that it is safe to access the non HW portions of DPMEM. - * Aditional check needed for Xscale based RAID controllers */ - while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 ) - gdth_delay(1); - - /* check and reset interface area */ - writel(DPMEM_MAGIC, &dp6m_ptr->u); - if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) { - printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", - pcistr->dpmem); - found = FALSE; - for (i = 0xC8000; i < 0xE8000; i += 0x4000) { - iounmap(ha->brd); - ha->brd = ioremap(i, sizeof(u16)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - if (readw(ha->brd) != 0xffff) { - TRACE2(("init_pci_mpr() address 0x%x busy\n", i)); - continue; - } - iounmap(ha->brd); - pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i); - ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); - if (ha->brd == NULL) { - printk("GDT-PCI: Initialization error (DPMEM remap error)\n"); - return 0; - } - dp6m_ptr = ha->brd; - writel(DPMEM_MAGIC, &dp6m_ptr->u); - if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) { - printk("GDT-PCI: Use free address at 0x%x\n", i); - found = TRUE; - break; - } - } - if (!found) { - printk("GDT-PCI: No free address found!\n"); - iounmap(ha->brd); - return 0; - } - } - memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u)); - - /* disable board interrupts, deinit services */ - writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4, - &dp6m_ptr->i960r.edoor_en_reg); - writeb(0xff, &dp6m_ptr->i960r.edoor_reg); - writeb(0x00, &dp6m_ptr->u.ic.S_Status); - writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index); - - writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]); - writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx); - writeb(1, &dp6m_ptr->i960r.ldoor_reg); - retries = INIT_RETRIES; - gdth_delay(20); - while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) { - if (--retries == 0) { - printk("GDT-PCI: Initialization error (DEINIT failed)\n"); - iounmap(ha->brd); - return 0; - } - gdth_delay(1); - } - prot_ver = (u8)readl(&dp6m_ptr->u.ic.S_Info[0]); - writeb(0, &dp6m_ptr->u.ic.S_Status); - if (prot_ver != PROTOCOL_VERSION) { - printk("GDT-PCI: Illegal protocol version\n"); - iounmap(ha->brd); - return 0; - } - - ha->type = GDT_PCIMPR; - ha->ic_all_size = sizeof(dp6m_ptr->u); - - /* special command to controller BIOS */ - writel(0x00, &dp6m_ptr->u.ic.S_Info[0]); - writel(0x00, &dp6m_ptr->u.ic.S_Info[1]); - writel(0x00, &dp6m_ptr->u.ic.S_Info[2]); - writel(0x00, &dp6m_ptr->u.ic.S_Info[3]); - writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx); - writeb(1, &dp6m_ptr->i960r.ldoor_reg); - retries = INIT_RETRIES; - gdth_delay(20); - while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) { - if (--retries == 0) { - printk("GDT-PCI: Initialization error\n"); - iounmap(ha->brd); - return 0; - } - gdth_delay(1); - } - writeb(0, &dp6m_ptr->u.ic.S_Status); - - /* read FW version to detect 64-bit DMA support */ - writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx); - writeb(1, &dp6m_ptr->i960r.ldoor_reg); - retries = INIT_RETRIES; - gdth_delay(20); - while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) { - if (--retries == 0) { - printk("GDT-PCI: Initialization error (DEINIT failed)\n"); - iounmap(ha->brd); - return 0; - } - gdth_delay(1); - } - prot_ver = (u8)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16); - writeb(0, &dp6m_ptr->u.ic.S_Status); - if (prot_ver < 0x2b) /* FW < x.43: no 64-bit DMA support */ - ha->dma64_support = 0; - else - ha->dma64_support = 1; - } - - return 1; -} - -/* controller protocol functions */ - -static void gdth_enable_int(gdth_ha_str *ha) -{ - unsigned long flags; - gdt6_dpram_str __iomem *dp6_ptr; - gdt6m_dpram_str __iomem *dp6m_ptr; - - TRACE(("gdth_enable_int() hanum %d\n",ha->hanum)); - spin_lock_irqsave(&ha->smp_lock, flags); - - if (ha->type == GDT_PCI) { - dp6_ptr = ha->brd; - writeb(1, &dp6_ptr->io.irqdel); - writeb(0, &dp6_ptr->u.ic.Cmd_Index); - writeb(1, &dp6_ptr->io.irqen); - } else if (ha->type == GDT_PCINEW) { - outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); - outb(0x03, PTR2USHORT(&ha->plx->control1)); - } else if (ha->type == GDT_PCIMPR) { - dp6m_ptr = ha->brd; - writeb(0xff, &dp6m_ptr->i960r.edoor_reg); - writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4, - &dp6m_ptr->i960r.edoor_en_reg); - } - spin_unlock_irqrestore(&ha->smp_lock, flags); -} - -/* return IStatus if interrupt was from this card else 0 */ -static u8 gdth_get_status(gdth_ha_str *ha) -{ - u8 IStatus = 0; - - TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count)); - - if (ha->type == GDT_PCI) - IStatus = - readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index); - else if (ha->type == GDT_PCINEW) - IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg)); - else if (ha->type == GDT_PCIMPR) - IStatus = - readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg); - - return IStatus; -} - -static int gdth_test_busy(gdth_ha_str *ha) -{ - register int gdtsema0 = 0; - - TRACE(("gdth_test_busy() hanum %d\n", ha->hanum)); - - if (ha->type == GDT_PCI) - gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0); - else if (ha->type == GDT_PCINEW) - gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg)); - else if (ha->type == GDT_PCIMPR) - gdtsema0 = - (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg); - - return (gdtsema0 & 1); -} - - -static int gdth_get_cmd_index(gdth_ha_str *ha) -{ - int i; - - TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum)); - - for (i=0; i<GDTH_MAXCMDS; ++i) { - if (ha->cmd_tab[i].cmnd == UNUSED_CMND) { - ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer; - ha->cmd_tab[i].service = ha->pccb->Service; - ha->pccb->CommandIndex = (u32)i+2; - return (i+2); - } - } - return 0; -} - - -static void gdth_set_sema0(gdth_ha_str *ha) -{ - TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum)); - - if (ha->type == GDT_PCI) { - writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0); - } else if (ha->type == GDT_PCINEW) { - outb(1, PTR2USHORT(&ha->plx->sema0_reg)); - } else if (ha->type == GDT_PCIMPR) { - writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg); - } -} - - -static void gdth_copy_command(gdth_ha_str *ha) -{ - register gdth_cmd_str *cmd_ptr; - register gdt6m_dpram_str __iomem *dp6m_ptr; - register gdt6c_dpram_str __iomem *dp6c_ptr; - gdt6_dpram_str __iomem *dp6_ptr; - u16 cp_count,dp_offset,cmd_no; - - TRACE(("gdth_copy_command() hanum %d\n", ha->hanum)); - - cp_count = ha->cmd_len; - dp_offset= ha->cmd_offs_dpmem; - cmd_no = ha->cmd_cnt; - cmd_ptr = ha->pccb; - - ++ha->cmd_cnt; - - /* set cpcount dword aligned */ - if (cp_count & 3) - cp_count += (4 - (cp_count & 3)); - - ha->cmd_offs_dpmem += cp_count; - - /* set offset and service, copy command to DPMEM */ - if (ha->type == GDT_PCI) { - dp6_ptr = ha->brd; - writew(dp_offset + DPMEM_COMMAND_OFFSET, - &dp6_ptr->u.ic.comm_queue[cmd_no].offset); - writew((u16)cmd_ptr->Service, - &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id); - memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count); - } else if (ha->type == GDT_PCINEW) { - dp6c_ptr = ha->brd; - writew(dp_offset + DPMEM_COMMAND_OFFSET, - &dp6c_ptr->u.ic.comm_queue[cmd_no].offset); - writew((u16)cmd_ptr->Service, - &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id); - memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count); - } else if (ha->type == GDT_PCIMPR) { - dp6m_ptr = ha->brd; - writew(dp_offset + DPMEM_COMMAND_OFFSET, - &dp6m_ptr->u.ic.comm_queue[cmd_no].offset); - writew((u16)cmd_ptr->Service, - &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id); - memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count); - } -} - - -static void gdth_release_event(gdth_ha_str *ha) -{ - TRACE(("gdth_release_event() hanum %d\n", ha->hanum)); - -#ifdef GDTH_STATISTICS - { - u32 i,j; - for (i=0,j=0; j<GDTH_MAXCMDS; ++j) { - if (ha->cmd_tab[j].cmnd != UNUSED_CMND) - ++i; - } - if (max_index < i) { - max_index = i; - TRACE3(("GDT: max_index = %d\n",(u16)i)); - } - } -#endif - - if (ha->pccb->OpCode == GDT_INIT) - ha->pccb->Service |= 0x80; - - if (ha->type == GDT_PCI) { - writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event); - } else if (ha->type == GDT_PCINEW) { - outb(1, PTR2USHORT(&ha->plx->ldoor_reg)); - } else if (ha->type == GDT_PCIMPR) { - writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg); - } -} - -static int gdth_wait(gdth_ha_str *ha, int index, u32 time) -{ - int answer_found = FALSE; - int wait_index = 0; - - TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time)); - - if (index == 0) - return 1; /* no wait required */ - - do { - __gdth_interrupt(ha, true, &wait_index); - if (wait_index == index) { - answer_found = TRUE; - break; - } - gdth_delay(1); - } while (--time); - - while (gdth_test_busy(ha)) - gdth_delay(0); - - return (answer_found); -} - - -static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode, - u32 p1, u64 p2, u64 p3) -{ - register gdth_cmd_str *cmd_ptr; - int retries,index; - - TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode)); - - cmd_ptr = ha->pccb; - memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str)); - - /* make command */ - for (retries = INIT_RETRIES;;) { - cmd_ptr->Service = service; - cmd_ptr->RequestBuffer = INTERNAL_CMND; - if (!(index=gdth_get_cmd_index(ha))) { - TRACE(("GDT: No free command index found\n")); - return 0; - } - gdth_set_sema0(ha); - cmd_ptr->OpCode = opcode; - cmd_ptr->BoardNode = LOCALBOARD; - if (service == CACHESERVICE) { - if (opcode == GDT_IOCTL) { - cmd_ptr->u.ioctl.subfunc = p1; - cmd_ptr->u.ioctl.channel = (u32)p2; - cmd_ptr->u.ioctl.param_size = (u16)p3; - cmd_ptr->u.ioctl.p_param = ha->scratch_phys; - } else { - if (ha->cache_feat & GDT_64BIT) { - cmd_ptr->u.cache64.DeviceNo = (u16)p1; - cmd_ptr->u.cache64.BlockNo = p2; - } else { - cmd_ptr->u.cache.DeviceNo = (u16)p1; - cmd_ptr->u.cache.BlockNo = (u32)p2; - } - } - } else if (service == SCSIRAWSERVICE) { - if (ha->raw_feat & GDT_64BIT) { - cmd_ptr->u.raw64.direction = p1; - cmd_ptr->u.raw64.bus = (u8)p2; - cmd_ptr->u.raw64.target = (u8)p3; - cmd_ptr->u.raw64.lun = (u8)(p3 >> 8); - } else { - cmd_ptr->u.raw.direction = p1; - cmd_ptr->u.raw.bus = (u8)p2; - cmd_ptr->u.raw.target = (u8)p3; - cmd_ptr->u.raw.lun = (u8)(p3 >> 8); - } - } else if (service == SCREENSERVICE) { - if (opcode == GDT_REALTIME) { - *(u32 *)&cmd_ptr->u.screen.su.data[0] = p1; - *(u32 *)&cmd_ptr->u.screen.su.data[4] = (u32)p2; - *(u32 *)&cmd_ptr->u.screen.su.data[8] = (u32)p3; - } - } - ha->cmd_len = sizeof(gdth_cmd_str); - ha->cmd_offs_dpmem = 0; - ha->cmd_cnt = 0; - gdth_copy_command(ha); - gdth_release_event(ha); - gdth_delay(20); - if (!gdth_wait(ha, index, INIT_TIMEOUT)) { - printk("GDT: Initialization error (timeout service %d)\n",service); - return 0; - } - if (ha->status != S_BSY || --retries == 0) - break; - gdth_delay(1); - } - - return (ha->status != S_OK ? 0:1); -} - - -/* search for devices */ - -static int gdth_search_drives(gdth_ha_str *ha) -{ - u16 cdev_cnt, i; - int ok; - u32 bus_no, drv_cnt, drv_no, j; - gdth_getch_str *chn; - gdth_drlist_str *drl; - gdth_iochan_str *ioc; - gdth_raw_iochan_str *iocr; - gdth_arcdl_str *alst; - gdth_alist_str *alst2; - gdth_oem_str_ioctl *oemstr; - - TRACE(("gdth_search_drives() hanum %d\n", ha->hanum)); - ok = 0; - - /* initialize controller services, at first: screen service */ - ha->screen_feat = 0; - if (!force_dma32) { - ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0); - if (ok) - ha->screen_feat = GDT_64BIT; - } - if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC)) - ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0); - if (!ok) { - printk("GDT-HA %d: Initialization error screen service (code %d)\n", - ha->hanum, ha->status); - return 0; - } - TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n")); - - /* unfreeze all IOs */ - gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0); - - /* initialize cache service */ - ha->cache_feat = 0; - if (!force_dma32) { - ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS, - 0, 0); - if (ok) - ha->cache_feat = GDT_64BIT; - } - if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC)) - ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0); - if (!ok) { - printk("GDT-HA %d: Initialization error cache service (code %d)\n", - ha->hanum, ha->status); - return 0; - } - TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n")); - cdev_cnt = (u16)ha->info; - ha->fw_vers = ha->service; - - /* detect number of buses - try new IOCTL */ - iocr = (gdth_raw_iochan_str *)ha->pscratch; - iocr->hdr.version = 0xffffffff; - iocr->hdr.list_entries = MAXBUS; - iocr->hdr.first_chan = 0; - iocr->hdr.last_chan = MAXBUS-1; - iocr->hdr.list_offset = GDTOFFSOF(gdth_raw_iochan_str, list[0]); - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC, - INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) { - TRACE2(("IOCHAN_RAW_DESC supported!\n")); - ha->bus_cnt = iocr->hdr.chan_count; - for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) { - if (iocr->list[bus_no].proc_id < MAXID) - ha->bus_id[bus_no] = iocr->list[bus_no].proc_id; - else - ha->bus_id[bus_no] = 0xff; - } - } else { - /* old method */ - chn = (gdth_getch_str *)ha->pscratch; - for (bus_no = 0; bus_no < MAXBUS; ++bus_no) { - chn->channel_no = bus_no; - if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, - SCSI_CHAN_CNT | L_CTRL_PATTERN, - IO_CHANNEL | INVALID_CHANNEL, - sizeof(gdth_getch_str))) { - if (bus_no == 0) { - printk("GDT-HA %d: Error detecting channel count (0x%x)\n", - ha->hanum, ha->status); - return 0; - } - break; - } - if (chn->siop_id < MAXID) - ha->bus_id[bus_no] = chn->siop_id; - else - ha->bus_id[bus_no] = 0xff; - } - ha->bus_cnt = (u8)bus_no; - } - TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt)); - - /* read cache configuration */ - if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO, - INVALID_CHANNEL,sizeof(gdth_cinfo_str))) { - printk("GDT-HA %d: Initialization error cache service (code %d)\n", - ha->hanum, ha->status); - return 0; - } - ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar; - TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n", - ha->cpar.version,ha->cpar.state,ha->cpar.strategy, - ha->cpar.write_back,ha->cpar.block_size)); - - /* read board info and features */ - ha->more_proc = FALSE; - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO, - INVALID_CHANNEL,sizeof(gdth_binfo_str))) { - memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch, - sizeof(gdth_binfo_str)); - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES, - INVALID_CHANNEL,sizeof(gdth_bfeat_str))) { - TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n")); - ha->bfeat = *(gdth_bfeat_str *)ha->pscratch; - ha->more_proc = TRUE; - } - } else { - TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n")); - strcpy(ha->binfo.type_string, gdth_ctr_name(ha)); - } - TRACE2(("Controller name: %s\n",ha->binfo.type_string)); - - /* read more informations */ - if (ha->more_proc) { - /* physical drives, channel addresses */ - ioc = (gdth_iochan_str *)ha->pscratch; - ioc->hdr.version = 0xffffffff; - ioc->hdr.list_entries = MAXBUS; - ioc->hdr.first_chan = 0; - ioc->hdr.last_chan = MAXBUS-1; - ioc->hdr.list_offset = GDTOFFSOF(gdth_iochan_str, list[0]); - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC, - INVALID_CHANNEL,sizeof(gdth_iochan_str))) { - for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) { - ha->raw[bus_no].address = ioc->list[bus_no].address; - ha->raw[bus_no].local_no = ioc->list[bus_no].local_no; - } - } else { - for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) { - ha->raw[bus_no].address = IO_CHANNEL; - ha->raw[bus_no].local_no = bus_no; - } - } - for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) { - chn = (gdth_getch_str *)ha->pscratch; - chn->channel_no = ha->raw[bus_no].local_no; - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, - SCSI_CHAN_CNT | L_CTRL_PATTERN, - ha->raw[bus_no].address | INVALID_CHANNEL, - sizeof(gdth_getch_str))) { - ha->raw[bus_no].pdev_cnt = chn->drive_cnt; - TRACE2(("Channel %d: %d phys. drives\n", - bus_no,chn->drive_cnt)); - } - if (ha->raw[bus_no].pdev_cnt > 0) { - drl = (gdth_drlist_str *)ha->pscratch; - drl->sc_no = ha->raw[bus_no].local_no; - drl->sc_cnt = ha->raw[bus_no].pdev_cnt; - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, - SCSI_DR_LIST | L_CTRL_PATTERN, - ha->raw[bus_no].address | INVALID_CHANNEL, - sizeof(gdth_drlist_str))) { - for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) - ha->raw[bus_no].id_list[j] = drl->sc_list[j]; - } else { - ha->raw[bus_no].pdev_cnt = 0; - } - } - } - - /* logical drives */ - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT, - INVALID_CHANNEL,sizeof(u32))) { - drv_cnt = *(u32 *)ha->pscratch; - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST, - INVALID_CHANNEL,drv_cnt * sizeof(u32))) { - for (j = 0; j < drv_cnt; ++j) { - drv_no = ((u32 *)ha->pscratch)[j]; - if (drv_no < MAX_LDRIVES) { - ha->hdr[drv_no].is_logdrv = TRUE; - TRACE2(("Drive %d is log. drive\n",drv_no)); - } - } - } - alst = (gdth_arcdl_str *)ha->pscratch; - alst->entries_avail = MAX_LDRIVES; - alst->first_entry = 0; - alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]); - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, - ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, - INVALID_CHANNEL, sizeof(gdth_arcdl_str) + - (alst->entries_avail-1) * sizeof(gdth_alist_str))) { - for (j = 0; j < alst->entries_init; ++j) { - ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd; - ha->hdr[j].is_master = alst->list[j].is_master; - ha->hdr[j].is_parity = alst->list[j].is_parity; - ha->hdr[j].is_hotfix = alst->list[j].is_hotfix; - ha->hdr[j].master_no = alst->list[j].cd_handle; - } - } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, - ARRAY_DRV_LIST | LA_CTRL_PATTERN, - 0, 35 * sizeof(gdth_alist_str))) { - for (j = 0; j < 35; ++j) { - alst2 = &((gdth_alist_str *)ha->pscratch)[j]; - ha->hdr[j].is_arraydrv = alst2->is_arrayd; - ha->hdr[j].is_master = alst2->is_master; - ha->hdr[j].is_parity = alst2->is_parity; - ha->hdr[j].is_hotfix = alst2->is_hotfix; - ha->hdr[j].master_no = alst2->cd_handle; - } - } - } - } - - /* initialize raw service */ - ha->raw_feat = 0; - if (!force_dma32) { - ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0); - if (ok) - ha->raw_feat = GDT_64BIT; - } - if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC)) - ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0); - if (!ok) { - printk("GDT-HA %d: Initialization error raw service (code %d)\n", - ha->hanum, ha->status); - return 0; - } - TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n")); - - /* set/get features raw service (scatter/gather) */ - if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER, - 0, 0)) { - TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n")); - if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) { - TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n", - ha->info)); - ha->raw_feat |= (u16)ha->info; - } - } - - /* set/get features cache service (equal to raw service) */ - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0, - SCATTER_GATHER,0)) { - TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n")); - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) { - TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n", - ha->info)); - ha->cache_feat |= (u16)ha->info; - } - } - - /* reserve drives for raw service */ - if (reserve_mode != 0) { - gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL, - reserve_mode == 1 ? 1 : 3, 0, 0); - TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", - ha->status)); - } - for (i = 0; i < MAX_RES_ARGS; i += 4) { - if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt && - reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) { - TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n", - reserve_list[i], reserve_list[i+1], - reserve_list[i+2], reserve_list[i+3])); - if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0, - reserve_list[i+1], reserve_list[i+2] | - (reserve_list[i+3] << 8))) { - printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n", - ha->hanum, ha->status); - } - } - } - - /* Determine OEM string using IOCTL */ - oemstr = (gdth_oem_str_ioctl *)ha->pscratch; - oemstr->params.ctl_version = 0x01; - oemstr->params.buffer_size = sizeof(oemstr->text); - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, - CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL, - sizeof(gdth_oem_str_ioctl))) { - TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n")); - printk("GDT-HA %d: Vendor: %s Name: %s\n", - ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string); - /* Save the Host Drive inquiry data */ - strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id, - sizeof(ha->oem_name)); - } else { - /* Old method, based on PCI ID */ - TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n")); - printk("GDT-HA %d: Name: %s\n", - ha->hanum, ha->binfo.type_string); - if (ha->oem_id == OEM_ID_INTEL) - strlcpy(ha->oem_name,"Intel ", sizeof(ha->oem_name)); - else - strlcpy(ha->oem_name,"ICP ", sizeof(ha->oem_name)); - } - - /* scanning for host drives */ - for (i = 0; i < cdev_cnt; ++i) - gdth_analyse_hdrive(ha, i); - - TRACE(("gdth_search_drives() OK\n")); - return 1; -} - -static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive) -{ - u32 drv_cyls; - int drv_hds, drv_secs; - - TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive)); - if (hdrive >= MAX_HDRIVES) - return 0; - - if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0)) - return 0; - ha->hdr[hdrive].present = TRUE; - ha->hdr[hdrive].size = ha->info; - - /* evaluate mapping (sectors per head, heads per cylinder) */ - ha->hdr[hdrive].size &= ~SECS32; - if (ha->info2 == 0) { - gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs); - } else { - drv_hds = ha->info2 & 0xff; - drv_secs = (ha->info2 >> 8) & 0xff; - drv_cyls = (u32)ha->hdr[hdrive].size / drv_hds / drv_secs; - } - ha->hdr[hdrive].heads = (u8)drv_hds; - ha->hdr[hdrive].secs = (u8)drv_secs; - /* round size */ - ha->hdr[hdrive].size = drv_cyls * drv_hds * drv_secs; - - if (ha->cache_feat & GDT_64BIT) { - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0) - && ha->info2 != 0) { - ha->hdr[hdrive].size = ((u64)ha->info2 << 32) | ha->info; - } - } - TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n", - hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs)); - - /* get informations about device */ - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) { - TRACE2(("gdth_search_dr() cache drive %d devtype %d\n", - hdrive,ha->info)); - ha->hdr[hdrive].devtype = (u16)ha->info; - } - - /* cluster info */ - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) { - TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n", - hdrive,ha->info)); - if (!shared_access) - ha->hdr[hdrive].cluster_type = (u8)ha->info; - } - - /* R/W attributes */ - if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) { - TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n", - hdrive,ha->info)); - ha->hdr[hdrive].rw_attribs = (u8)ha->info; - } - - return 1; -} - - -/* command queueing/sending functions */ - -static void gdth_putq(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 priority) -{ - struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp); - register struct scsi_cmnd *pscp; - register struct scsi_cmnd *nscp; - unsigned long flags; - - TRACE(("gdth_putq() priority %d\n",priority)); - spin_lock_irqsave(&ha->smp_lock, flags); - - if (!cmndinfo->internal_command) - cmndinfo->priority = priority; - - if (ha->req_first==NULL) { - ha->req_first = scp; /* queue was empty */ - scp->SCp.ptr = NULL; - } else { /* queue not empty */ - pscp = ha->req_first; - nscp = (struct scsi_cmnd *)pscp->SCp.ptr; - /* priority: 0-highest,..,0xff-lowest */ - while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) { - pscp = nscp; - nscp = (struct scsi_cmnd *)pscp->SCp.ptr; - } - pscp->SCp.ptr = (char *)scp; - scp->SCp.ptr = (char *)nscp; - } - spin_unlock_irqrestore(&ha->smp_lock, flags); - -#ifdef GDTH_STATISTICS - flags = 0; - for (nscp=ha->req_first; nscp; nscp=(struct scsi_cmnd*)nscp->SCp.ptr) - ++flags; - if (max_rq < flags) { - max_rq = flags; - TRACE3(("GDT: max_rq = %d\n",(u16)max_rq)); - } -#endif -} - -static void gdth_next(gdth_ha_str *ha) -{ - register struct scsi_cmnd *pscp; - register struct scsi_cmnd *nscp; - u8 b, t, l, firsttime; - u8 this_cmd, next_cmd; - unsigned long flags = 0; - int cmd_index; - - TRACE(("gdth_next() hanum %d\n", ha->hanum)); - if (!gdth_polling) - spin_lock_irqsave(&ha->smp_lock, flags); - - ha->cmd_cnt = ha->cmd_offs_dpmem = 0; - this_cmd = firsttime = TRUE; - next_cmd = gdth_polling ? FALSE:TRUE; - cmd_index = 0; - - for (nscp = pscp = ha->req_first; nscp; nscp = (struct scsi_cmnd *)nscp->SCp.ptr) { - struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp); - if (nscp != pscp && nscp != (struct scsi_cmnd *)pscp->SCp.ptr) - pscp = (struct scsi_cmnd *)pscp->SCp.ptr; - if (!nscp_cmndinfo->internal_command) { - b = nscp->device->channel; - t = nscp->device->id; - l = nscp->device->lun; - if (nscp_cmndinfo->priority >= DEFAULT_PRI) { - if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) || - (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) - continue; - } - } else - b = t = l = 0; - - if (firsttime) { - if (gdth_test_busy(ha)) { /* controller busy ? */ - TRACE(("gdth_next() controller %d busy !\n", ha->hanum)); - if (!gdth_polling) { - spin_unlock_irqrestore(&ha->smp_lock, flags); - return; - } - while (gdth_test_busy(ha)) - gdth_delay(1); - } - firsttime = FALSE; - } - - if (!nscp_cmndinfo->internal_command) { - if (nscp_cmndinfo->phase == -1) { - nscp_cmndinfo->phase = CACHESERVICE; /* default: cache svc. */ - if (nscp->cmnd[0] == TEST_UNIT_READY) { - TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", - b, t, l)); - /* TEST_UNIT_READY -> set scan mode */ - if ((ha->scan_mode & 0x0f) == 0) { - if (b == 0 && t == 0 && l == 0) { - ha->scan_mode |= 1; - TRACE2(("Scan mode: 0x%x\n", ha->scan_mode)); - } - } else if ((ha->scan_mode & 0x0f) == 1) { - if (b == 0 && ((t == 0 && l == 1) || - (t == 1 && l == 0))) { - nscp_cmndinfo->OpCode = GDT_SCAN_START; - nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8) - | SCSIRAWSERVICE; - ha->scan_mode = 0x12; - TRACE2(("Scan mode: 0x%x (SCAN_START)\n", - ha->scan_mode)); - } else { - ha->scan_mode &= 0x10; - TRACE2(("Scan mode: 0x%x\n", ha->scan_mode)); - } - } else if (ha->scan_mode == 0x12) { - if (b == ha->bus_cnt && t == ha->tid_cnt-1) { - nscp_cmndinfo->phase = SCSIRAWSERVICE; - nscp_cmndinfo->OpCode = GDT_SCAN_END; - ha->scan_mode &= 0x10; - TRACE2(("Scan mode: 0x%x (SCAN_END)\n", - ha->scan_mode)); - } - } - } - if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY && - nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE && - (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) { - /* always GDT_CLUST_INFO! */ - nscp_cmndinfo->OpCode = GDT_CLUST_INFO; - } - } - } - - if (nscp_cmndinfo->OpCode != -1) { - if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) { - if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t))) - this_cmd = FALSE; - next_cmd = FALSE; - } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) { - if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b)))) - this_cmd = FALSE; - next_cmd = FALSE; - } else { - memset((char*)nscp->sense_buffer,0,16); - nscp->sense_buffer[0] = 0x70; - nscp->sense_buffer[2] = NOT_READY; - nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1); - if (!nscp_cmndinfo->wait_for_completion) - nscp_cmndinfo->wait_for_completion++; - else - gdth_scsi_done(nscp); - } - } else if (gdth_cmnd_priv(nscp)->internal_command) { - if (!(cmd_index=gdth_special_cmd(ha, nscp))) - this_cmd = FALSE; - next_cmd = FALSE; - } else if (b != ha->virt_bus) { - if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW || - !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b)))) - this_cmd = FALSE; - else - ha->raw[BUS_L2P(ha,b)].io_cnt[t]++; - } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) { - TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n", - nscp->cmnd[0], b, t, l)); - nscp->result = DID_BAD_TARGET << 16; - if (!nscp_cmndinfo->wait_for_completion) - nscp_cmndinfo->wait_for_completion++; - else - gdth_scsi_done(nscp); - } else { - switch (nscp->cmnd[0]) { - case TEST_UNIT_READY: - case INQUIRY: - case REQUEST_SENSE: - case READ_CAPACITY: - case VERIFY: - case START_STOP: - case MODE_SENSE: - case SERVICE_ACTION_IN_16: - TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0], - nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3], - nscp->cmnd[4],nscp->cmnd[5])); - if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) { - /* return UNIT_ATTENTION */ - TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n", - nscp->cmnd[0], t)); - ha->hdr[t].media_changed = FALSE; - memset((char*)nscp->sense_buffer,0,16); - nscp->sense_buffer[0] = 0x70; - nscp->sense_buffer[2] = UNIT_ATTENTION; - nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1); - if (!nscp_cmndinfo->wait_for_completion) - nscp_cmndinfo->wait_for_completion++; - else - gdth_scsi_done(nscp); - } else if (gdth_internal_cache_cmd(ha, nscp)) - gdth_scsi_done(nscp); - break; - - case ALLOW_MEDIUM_REMOVAL: - TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0], - nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3], - nscp->cmnd[4],nscp->cmnd[5])); - if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) { - TRACE(("Prevent r. nonremov. drive->do nothing\n")); - nscp->result = DID_OK << 16; - nscp->sense_buffer[0] = 0; - if (!nscp_cmndinfo->wait_for_completion) - nscp_cmndinfo->wait_for_completion++; - else - gdth_scsi_done(nscp); - } else { - nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0; - TRACE(("Prevent/allow r. %d rem. drive %d\n", - nscp->cmnd[4],nscp->cmnd[3])); - if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t))) - this_cmd = FALSE; - } - break; - - case RESERVE: - case RELEASE: - TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ? - "RESERVE" : "RELEASE")); - if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t))) - this_cmd = FALSE; - break; - - case READ_6: - case WRITE_6: - case READ_10: - case WRITE_10: - case READ_16: - case WRITE_16: - if (ha->hdr[t].media_changed) { - /* return UNIT_ATTENTION */ - TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n", - nscp->cmnd[0], t)); - ha->hdr[t].media_changed = FALSE; - memset((char*)nscp->sense_buffer,0,16); - nscp->sense_buffer[0] = 0x70; - nscp->sense_buffer[2] = UNIT_ATTENTION; - nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1); - if (!nscp_cmndinfo->wait_for_completion) - nscp_cmndinfo->wait_for_completion++; - else - gdth_scsi_done(nscp); - } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t))) - this_cmd = FALSE; - break; - - default: - TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0], - nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3], - nscp->cmnd[4],nscp->cmnd[5])); - printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n", - ha->hanum, nscp->cmnd[0]); - nscp->result = DID_ABORT << 16; - if (!nscp_cmndinfo->wait_for_completion) - nscp_cmndinfo->wait_for_completion++; - else - gdth_scsi_done(nscp); - break; - } - } - - if (!this_cmd) - break; - if (nscp == ha->req_first) - ha->req_first = pscp = (struct scsi_cmnd *)nscp->SCp.ptr; - else - pscp->SCp.ptr = nscp->SCp.ptr; - if (!next_cmd) - break; - } - - if (ha->cmd_cnt > 0) { - gdth_release_event(ha); - } - - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - - if (gdth_polling && ha->cmd_cnt > 0) { - if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT)) - printk("GDT-HA %d: Command %d timed out !\n", - ha->hanum, cmd_index); - } -} - -/* - * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's - * buffers, kmap_atomic() as needed. - */ -static void gdth_copy_internal_data(gdth_ha_str *ha, struct scsi_cmnd *scp, - char *buffer, u16 count) -{ - u16 cpcount,i, max_sg = scsi_sg_count(scp); - u16 cpsum,cpnow; - struct scatterlist *sl; - char *address; - - cpcount = min_t(u16, count, scsi_bufflen(scp)); - - if (cpcount) { - cpsum=0; - scsi_for_each_sg(scp, sl, max_sg, i) { - unsigned long flags; - cpnow = (u16)sl->length; - TRACE(("copy_internal() now %d sum %d count %d %d\n", - cpnow, cpsum, cpcount, scsi_bufflen(scp))); - if (cpsum+cpnow > cpcount) - cpnow = cpcount - cpsum; - cpsum += cpnow; - if (!sg_page(sl)) { - printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n", - ha->hanum); - return; - } - local_irq_save(flags); - address = kmap_atomic(sg_page(sl)) + sl->offset; - memcpy(address, buffer, cpnow); - flush_dcache_page(sg_page(sl)); - kunmap_atomic(address); - local_irq_restore(flags); - if (cpsum == cpcount) - break; - buffer += cpnow; - } - } else if (count) { - printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n", - ha->hanum); - WARN_ON(1); - } -} - -static int gdth_internal_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp) -{ - u8 t; - gdth_inq_data inq; - gdth_rdcap_data rdc; - gdth_sense_data sd; - gdth_modep_data mpd; - struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp); - - t = scp->device->id; - TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n", - scp->cmnd[0],t)); - - scp->result = DID_OK << 16; - scp->sense_buffer[0] = 0; - - switch (scp->cmnd[0]) { - case TEST_UNIT_READY: - case VERIFY: - case START_STOP: - TRACE2(("Test/Verify/Start hdrive %d\n",t)); - break; - - case INQUIRY: - TRACE2(("Inquiry hdrive %d devtype %d\n", - t,ha->hdr[t].devtype)); - inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK; - /* you can here set all disks to removable, if you want to do - a flush using the ALLOW_MEDIUM_REMOVAL command */ - inq.modif_rmb = 0x00; - if ((ha->hdr[t].devtype & 1) || - (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) - inq.modif_rmb = 0x80; - inq.version = 2; - inq.resp_aenc = 2; - inq.add_length= 32; - strcpy(inq.vendor,ha->oem_name); - snprintf(inq.product, sizeof(inq.product), "Host Drive #%02d",t); - strcpy(inq.revision," "); - gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data)); - break; - - case REQUEST_SENSE: - TRACE2(("Request sense hdrive %d\n",t)); - sd.errorcode = 0x70; - sd.segno = 0x00; - sd.key = NO_SENSE; - sd.info = 0; - sd.add_length= 0; - gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data)); - break; - - case MODE_SENSE: - TRACE2(("Mode sense hdrive %d\n",t)); - memset((char*)&mpd,0,sizeof(gdth_modep_data)); - mpd.hd.data_length = sizeof(gdth_modep_data); - mpd.hd.dev_par = (ha->hdr[t].devtype&2) ? 0x80:0; - mpd.hd.bd_length = sizeof(mpd.bd); - mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16; - mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8; - mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff); - gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data)); - break; - - case READ_CAPACITY: - TRACE2(("Read capacity hdrive %d\n",t)); - if (ha->hdr[t].size > (u64)0xffffffff) - rdc.last_block_no = 0xffffffff; - else - rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1); - rdc.block_length = cpu_to_be32(SECTOR_SIZE); - gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data)); - break; - - case SERVICE_ACTION_IN_16: - if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 && - (ha->cache_feat & GDT_64BIT)) { - gdth_rdcap16_data rdc16; - - TRACE2(("Read capacity (16) hdrive %d\n",t)); - rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1); - rdc16.block_length = cpu_to_be32(SECTOR_SIZE); - gdth_copy_internal_data(ha, scp, (char*)&rdc16, - sizeof(gdth_rdcap16_data)); - } else { - scp->result = DID_ABORT << 16; - } - break; - - default: - TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0])); - break; - } - - if (!cmndinfo->wait_for_completion) - cmndinfo->wait_for_completion++; - else - return 1; - - return 0; -} - -static int gdth_fill_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp, - u16 hdrive) -{ - register gdth_cmd_str *cmdp; - struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp); - u32 cnt, blockcnt; - u64 no, blockno; - int i, cmd_index, read_write, sgcnt, mode64; - - cmdp = ha->pccb; - TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n", - scp->cmnd[0],scp->cmd_len,hdrive)); - - mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE; - /* test for READ_16, WRITE_16 if !mode64 ? --- - not required, should not occur due to error return on - READ_CAPACITY_16 */ - - cmdp->Service = CACHESERVICE; - cmdp->RequestBuffer = scp; - /* search free command index */ - if (!(cmd_index=gdth_get_cmd_index(ha))) { - TRACE(("GDT: No free command index found\n")); - return 0; - } - /* if it's the first command, set command semaphore */ - if (ha->cmd_cnt == 0) - gdth_set_sema0(ha); - - /* fill command */ - read_write = 0; - if (cmndinfo->OpCode != -1) - cmdp->OpCode = cmndinfo->OpCode; /* special cache cmd. */ - else if (scp->cmnd[0] == RESERVE) - cmdp->OpCode = GDT_RESERVE_DRV; - else if (scp->cmnd[0] == RELEASE) - cmdp->OpCode = GDT_RELEASE_DRV; - else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { - if (scp->cmnd[4] & 1) /* prevent ? */ - cmdp->OpCode = GDT_MOUNT; - else if (scp->cmnd[3] & 1) /* removable drive ? */ - cmdp->OpCode = GDT_UNMOUNT; - else - cmdp->OpCode = GDT_FLUSH; - } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 || - scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16 - ) { - read_write = 1; - if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && - (ha->cache_feat & GDT_WR_THROUGH))) - cmdp->OpCode = GDT_WRITE_THR; - else - cmdp->OpCode = GDT_WRITE; - } else { - read_write = 2; - cmdp->OpCode = GDT_READ; - } - - cmdp->BoardNode = LOCALBOARD; - if (mode64) { - cmdp->u.cache64.DeviceNo = hdrive; - cmdp->u.cache64.BlockNo = 1; - cmdp->u.cache64.sg_canz = 0; - } else { - cmdp->u.cache.DeviceNo = hdrive; - cmdp->u.cache.BlockNo = 1; - cmdp->u.cache.sg_canz = 0; - } - - if (read_write) { - if (scp->cmd_len == 16) { - memcpy(&no, &scp->cmnd[2], sizeof(u64)); - blockno = be64_to_cpu(no); - memcpy(&cnt, &scp->cmnd[10], sizeof(u32)); - blockcnt = be32_to_cpu(cnt); - } else if (scp->cmd_len == 10) { - memcpy(&no, &scp->cmnd[2], sizeof(u32)); - blockno = be32_to_cpu(no); - memcpy(&cnt, &scp->cmnd[7], sizeof(u16)); - blockcnt = be16_to_cpu(cnt); - } else { - memcpy(&no, &scp->cmnd[0], sizeof(u32)); - blockno = be32_to_cpu(no) & 0x001fffffUL; - blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4]; - } - if (mode64) { - cmdp->u.cache64.BlockNo = blockno; - cmdp->u.cache64.BlockCnt = blockcnt; - } else { - cmdp->u.cache.BlockNo = (u32)blockno; - cmdp->u.cache.BlockCnt = blockcnt; - } - - if (scsi_bufflen(scp)) { - cmndinfo->dma_dir = (read_write == 1 ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); - sgcnt = dma_map_sg(&ha->pdev->dev, scsi_sglist(scp), - scsi_sg_count(scp), cmndinfo->dma_dir); - if (mode64) { - struct scatterlist *sl; - - cmdp->u.cache64.DestAddr= (u64)-1; - cmdp->u.cache64.sg_canz = sgcnt; - scsi_for_each_sg(scp, sl, sgcnt, i) { - cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl); - cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl); - } - } else { - struct scatterlist *sl; - - cmdp->u.cache.DestAddr= 0xffffffff; - cmdp->u.cache.sg_canz = sgcnt; - scsi_for_each_sg(scp, sl, sgcnt, i) { - cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl); - cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl); - } - } - -#ifdef GDTH_STATISTICS - if (max_sg < (u32)sgcnt) { - max_sg = (u32)sgcnt; - TRACE3(("GDT: max_sg = %d\n",max_sg)); - } -#endif - - } - } - /* evaluate command size, check space */ - if (mode64) { - TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n", - cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz, - cmdp->u.cache64.sg_lst[0].sg_ptr, - cmdp->u.cache64.sg_lst[0].sg_len)); - TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n", - cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt)); - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + - (u16)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str); - } else { - TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n", - cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz, - cmdp->u.cache.sg_lst[0].sg_ptr, - cmdp->u.cache.sg_lst[0].sg_len)); - TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n", - cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt)); - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + - (u16)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str); - } - if (ha->cmd_len & 3) - ha->cmd_len += (4 - (ha->cmd_len & 3)); - - if (ha->cmd_cnt > 0) { - if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) > - ha->ic_all_size) { - TRACE2(("gdth_fill_cache() DPMEM overflow\n")); - ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND; - return 0; - } - } - - /* copy command */ - gdth_copy_command(ha); - return cmd_index; -} - -static int gdth_fill_raw_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 b) -{ - register gdth_cmd_str *cmdp; - u16 i; - dma_addr_t sense_paddr; - int cmd_index, sgcnt, mode64; - u8 t,l; - struct gdth_cmndinfo *cmndinfo; - - t = scp->device->id; - l = scp->device->lun; - cmdp = ha->pccb; - TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n", - scp->cmnd[0],b,t,l)); - - mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE; - - cmdp->Service = SCSIRAWSERVICE; - cmdp->RequestBuffer = scp; - /* search free command index */ - if (!(cmd_index=gdth_get_cmd_index(ha))) { - TRACE(("GDT: No free command index found\n")); - return 0; - } - /* if it's the first command, set command semaphore */ - if (ha->cmd_cnt == 0) - gdth_set_sema0(ha); - - cmndinfo = gdth_cmnd_priv(scp); - /* fill command */ - if (cmndinfo->OpCode != -1) { - cmdp->OpCode = cmndinfo->OpCode; /* special raw cmd. */ - cmdp->BoardNode = LOCALBOARD; - if (mode64) { - cmdp->u.raw64.direction = (cmndinfo->phase >> 8); - TRACE2(("special raw cmd 0x%x param 0x%x\n", - cmdp->OpCode, cmdp->u.raw64.direction)); - /* evaluate command size */ - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst); - } else { - cmdp->u.raw.direction = (cmndinfo->phase >> 8); - TRACE2(("special raw cmd 0x%x param 0x%x\n", - cmdp->OpCode, cmdp->u.raw.direction)); - /* evaluate command size */ - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst); - } - - } else { - sense_paddr = dma_map_single(&ha->pdev->dev, scp->sense_buffer, 16, - DMA_FROM_DEVICE); - - cmndinfo->sense_paddr = sense_paddr; - cmdp->OpCode = GDT_WRITE; /* always */ - cmdp->BoardNode = LOCALBOARD; - if (mode64) { - cmdp->u.raw64.reserved = 0; - cmdp->u.raw64.mdisc_time = 0; - cmdp->u.raw64.mcon_time = 0; - cmdp->u.raw64.clen = scp->cmd_len; - cmdp->u.raw64.target = t; - cmdp->u.raw64.lun = l; - cmdp->u.raw64.bus = b; - cmdp->u.raw64.priority = 0; - cmdp->u.raw64.sdlen = scsi_bufflen(scp); - cmdp->u.raw64.sense_len = 16; - cmdp->u.raw64.sense_data = sense_paddr; - cmdp->u.raw64.direction = - gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN; - memcpy(cmdp->u.raw64.cmd,scp->cmnd,16); - cmdp->u.raw64.sg_ranz = 0; - } else { - cmdp->u.raw.reserved = 0; - cmdp->u.raw.mdisc_time = 0; - cmdp->u.raw.mcon_time = 0; - cmdp->u.raw.clen = scp->cmd_len; - cmdp->u.raw.target = t; - cmdp->u.raw.lun = l; - cmdp->u.raw.bus = b; - cmdp->u.raw.priority = 0; - cmdp->u.raw.link_p = 0; - cmdp->u.raw.sdlen = scsi_bufflen(scp); - cmdp->u.raw.sense_len = 16; - cmdp->u.raw.sense_data = sense_paddr; - cmdp->u.raw.direction = - gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN; - memcpy(cmdp->u.raw.cmd,scp->cmnd,12); - cmdp->u.raw.sg_ranz = 0; - } - - if (scsi_bufflen(scp)) { - cmndinfo->dma_dir = DMA_BIDIRECTIONAL; - sgcnt = dma_map_sg(&ha->pdev->dev, scsi_sglist(scp), - scsi_sg_count(scp), cmndinfo->dma_dir); - if (mode64) { - struct scatterlist *sl; - - cmdp->u.raw64.sdata = (u64)-1; - cmdp->u.raw64.sg_ranz = sgcnt; - scsi_for_each_sg(scp, sl, sgcnt, i) { - cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl); - cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl); - } - } else { - struct scatterlist *sl; - - cmdp->u.raw.sdata = 0xffffffff; - cmdp->u.raw.sg_ranz = sgcnt; - scsi_for_each_sg(scp, sl, sgcnt, i) { - cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl); - cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl); - } - } - -#ifdef GDTH_STATISTICS - if (max_sg < sgcnt) { - max_sg = sgcnt; - TRACE3(("GDT: max_sg = %d\n",sgcnt)); - } -#endif - - } - if (mode64) { - TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n", - cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz, - cmdp->u.raw64.sg_lst[0].sg_ptr, - cmdp->u.raw64.sg_lst[0].sg_len)); - /* evaluate command size */ - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + - (u16)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str); - } else { - TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n", - cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz, - cmdp->u.raw.sg_lst[0].sg_ptr, - cmdp->u.raw.sg_lst[0].sg_len)); - /* evaluate command size */ - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + - (u16)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str); - } - } - /* check space */ - if (ha->cmd_len & 3) - ha->cmd_len += (4 - (ha->cmd_len & 3)); - - if (ha->cmd_cnt > 0) { - if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) > - ha->ic_all_size) { - TRACE2(("gdth_fill_raw() DPMEM overflow\n")); - ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND; - return 0; - } - } - - /* copy command */ - gdth_copy_command(ha); - return cmd_index; -} - -static int gdth_special_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp) -{ - register gdth_cmd_str *cmdp; - struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp); - int cmd_index; - - cmdp= ha->pccb; - TRACE2(("gdth_special_cmd(): ")); - - *cmdp = *cmndinfo->internal_cmd_str; - cmdp->RequestBuffer = scp; - - /* search free command index */ - if (!(cmd_index=gdth_get_cmd_index(ha))) { - TRACE(("GDT: No free command index found\n")); - return 0; - } - - /* if it's the first command, set command semaphore */ - if (ha->cmd_cnt == 0) - gdth_set_sema0(ha); - - /* evaluate command size, check space */ - if (cmdp->OpCode == GDT_IOCTL) { - TRACE2(("IOCTL\n")); - ha->cmd_len = - GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(u64); - } else if (cmdp->Service == CACHESERVICE) { - TRACE2(("cache command %d\n",cmdp->OpCode)); - if (ha->cache_feat & GDT_64BIT) - ha->cmd_len = - GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str); - else - ha->cmd_len = - GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str); - } else if (cmdp->Service == SCSIRAWSERVICE) { - TRACE2(("raw command %d\n",cmdp->OpCode)); - if (ha->raw_feat & GDT_64BIT) - ha->cmd_len = - GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str); - else - ha->cmd_len = - GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str); - } - - if (ha->cmd_len & 3) - ha->cmd_len += (4 - (ha->cmd_len & 3)); - - if (ha->cmd_cnt > 0) { - if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) > - ha->ic_all_size) { - TRACE2(("gdth_special_cmd() DPMEM overflow\n")); - ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND; - return 0; - } - } - - /* copy command */ - gdth_copy_command(ha); - return cmd_index; -} - - -/* Controller event handling functions */ -static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source, - u16 idx, gdth_evt_data *evt) -{ - gdth_evt_str *e; - - /* no GDTH_LOCK_HA() ! */ - TRACE2(("gdth_store_event() source %d idx %d\n", source, idx)); - if (source == 0) /* no source -> no event */ - return NULL; - - if (ebuffer[elastidx].event_source == source && - ebuffer[elastidx].event_idx == idx && - ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 && - !memcmp((char *)&ebuffer[elastidx].event_data.eu, - (char *)&evt->eu, evt->size)) || - (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 && - !strcmp((char *)&ebuffer[elastidx].event_data.event_string, - (char *)&evt->event_string)))) { - e = &ebuffer[elastidx]; - e->last_stamp = (u32)ktime_get_real_seconds(); - ++e->same_count; - } else { - if (ebuffer[elastidx].event_source != 0) { /* entry not free ? */ - ++elastidx; - if (elastidx == MAX_EVENTS) - elastidx = 0; - if (elastidx == eoldidx) { /* reached mark ? */ - ++eoldidx; - if (eoldidx == MAX_EVENTS) - eoldidx = 0; - } - } - e = &ebuffer[elastidx]; - e->event_source = source; - e->event_idx = idx; - e->first_stamp = e->last_stamp = (u32)ktime_get_real_seconds(); - e->same_count = 1; - e->event_data = *evt; - e->application = 0; - } - return e; -} - -static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr) -{ - gdth_evt_str *e; - int eindex; - unsigned long flags; - - TRACE2(("gdth_read_event() handle %d\n", handle)); - spin_lock_irqsave(&ha->smp_lock, flags); - if (handle == -1) - eindex = eoldidx; - else - eindex = handle; - estr->event_source = 0; - - if (eindex < 0 || eindex >= MAX_EVENTS) { - spin_unlock_irqrestore(&ha->smp_lock, flags); - return eindex; - } - e = &ebuffer[eindex]; - if (e->event_source != 0) { - if (eindex != elastidx) { - if (++eindex == MAX_EVENTS) - eindex = 0; - } else { - eindex = -1; - } - memcpy(estr, e, sizeof(gdth_evt_str)); - } - spin_unlock_irqrestore(&ha->smp_lock, flags); - return eindex; -} - -static void gdth_readapp_event(gdth_ha_str *ha, - u8 application, gdth_evt_str *estr) -{ - gdth_evt_str *e; - int eindex; - unsigned long flags; - u8 found = FALSE; - - TRACE2(("gdth_readapp_event() app. %d\n", application)); - spin_lock_irqsave(&ha->smp_lock, flags); - eindex = eoldidx; - for (;;) { - e = &ebuffer[eindex]; - if (e->event_source == 0) - break; - if ((e->application & application) == 0) { - e->application |= application; - found = TRUE; - break; - } - if (eindex == elastidx) - break; - if (++eindex == MAX_EVENTS) - eindex = 0; - } - if (found) - memcpy(estr, e, sizeof(gdth_evt_str)); - else - estr->event_source = 0; - spin_unlock_irqrestore(&ha->smp_lock, flags); -} - -static void gdth_clear_events(void) -{ - TRACE(("gdth_clear_events()")); - - eoldidx = elastidx = 0; - ebuffer[0].event_source = 0; -} - - -/* SCSI interface functions */ - -static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, - int gdth_from_wait, int* pIndex) -{ - gdt6m_dpram_str __iomem *dp6m_ptr = NULL; - gdt6_dpram_str __iomem *dp6_ptr; - struct scsi_cmnd *scp; - int rval, i; - u8 IStatus; - u16 Service; - unsigned long flags = 0; - - TRACE(("gdth_interrupt() IRQ %d\n", ha->irq)); - - /* if polling and not from gdth_wait() -> return */ - if (gdth_polling) { - if (!gdth_from_wait) { - return IRQ_HANDLED; - } - } - - if (!gdth_polling) - spin_lock_irqsave(&ha->smp_lock, flags); - - /* search controller */ - IStatus = gdth_get_status(ha); - if (IStatus == 0) { - /* spurious interrupt */ - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - return IRQ_HANDLED; - } - -#ifdef GDTH_STATISTICS - ++act_ints; -#endif - - if (ha->type == GDT_PCI) { - dp6_ptr = ha->brd; - if (IStatus & 0x80) { /* error flag */ - IStatus &= ~0x80; - ha->status = readw(&dp6_ptr->u.ic.Status); - TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status)); - } else /* no error */ - ha->status = S_OK; - ha->info = readl(&dp6_ptr->u.ic.Info[0]); - ha->service = readw(&dp6_ptr->u.ic.Service); - ha->info2 = readl(&dp6_ptr->u.ic.Info[1]); - - writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */ - writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */ - writeb(0, &dp6_ptr->io.Sema1); /* reset status semaphore */ - } else if (ha->type == GDT_PCINEW) { - if (IStatus & 0x80) { /* error flag */ - IStatus &= ~0x80; - ha->status = inw(PTR2USHORT(&ha->plx->status)); - TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status)); - } else - ha->status = S_OK; - ha->info = inl(PTR2USHORT(&ha->plx->info[0])); - ha->service = inw(PTR2USHORT(&ha->plx->service)); - ha->info2 = inl(PTR2USHORT(&ha->plx->info[1])); - - outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); - outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); - } else if (ha->type == GDT_PCIMPR) { - dp6m_ptr = ha->brd; - if (IStatus & 0x80) { /* error flag */ - IStatus &= ~0x80; - ha->status = readw(&dp6m_ptr->i960r.status); - TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status)); - } else /* no error */ - ha->status = S_OK; - - ha->info = readl(&dp6m_ptr->i960r.info[0]); - ha->service = readw(&dp6m_ptr->i960r.service); - ha->info2 = readl(&dp6m_ptr->i960r.info[1]); - - /* event string */ - if (IStatus == ASYNCINDEX) { - if (ha->service != SCREENSERVICE && - (ha->fw_vers & 0xff) >= 0x1a) { - ha->dvr.severity = readb - (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity); - for (i = 0; i < 256; ++i) { - ha->dvr.event_string[i] = readb - (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]); - if (ha->dvr.event_string[i] == 0) - break; - } - } - } - writeb(0xff, &dp6m_ptr->i960r.edoor_reg); - writeb(0, &dp6m_ptr->i960r.sema1_reg); - } else { - TRACE2(("gdth_interrupt() unknown controller type\n")); - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - return IRQ_HANDLED; - } - - TRACE(("gdth_interrupt() index %d stat %d info %d\n", - IStatus,ha->status,ha->info)); - - if (gdth_from_wait) { - *pIndex = (int)IStatus; - } - - if (IStatus == ASYNCINDEX) { - TRACE2(("gdth_interrupt() async. event\n")); - gdth_async_event(ha); - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - gdth_next(ha); - return IRQ_HANDLED; - } - - if (IStatus == SPEZINDEX) { - TRACE2(("Service unknown or not initialized !\n")); - ha->dvr.size = sizeof(ha->dvr.eu.driver); - ha->dvr.eu.driver.ionode = ha->hanum; - gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr); - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - return IRQ_HANDLED; - } - scp = ha->cmd_tab[IStatus-2].cmnd; - Service = ha->cmd_tab[IStatus-2].service; - ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND; - if (scp == UNUSED_CMND) { - TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus)); - ha->dvr.size = sizeof(ha->dvr.eu.driver); - ha->dvr.eu.driver.ionode = ha->hanum; - ha->dvr.eu.driver.index = IStatus; - gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr); - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - return IRQ_HANDLED; - } - if (scp == INTERNAL_CMND) { - TRACE(("gdth_interrupt() answer to internal command\n")); - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - return IRQ_HANDLED; - } - - TRACE(("gdth_interrupt() sync. status\n")); - rval = gdth_sync_event(ha,Service,IStatus,scp); - if (!gdth_polling) - spin_unlock_irqrestore(&ha->smp_lock, flags); - if (rval == 2) { - gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority); - } else if (rval == 1) { - gdth_scsi_done(scp); - } - - gdth_next(ha); - return IRQ_HANDLED; -} - -static irqreturn_t gdth_interrupt(int irq, void *dev_id) -{ - gdth_ha_str *ha = dev_id; - - return __gdth_interrupt(ha, false, NULL); -} - -static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index, - struct scsi_cmnd *scp) -{ - gdth_msg_str *msg; - gdth_cmd_str *cmdp; - u8 b, t; - struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp); - - cmdp = ha->pccb; - TRACE(("gdth_sync_event() serv %d status %d\n", - service,ha->status)); - - if (service == SCREENSERVICE) { - msg = ha->pmsg; - TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n", - msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen)); - if (msg->msg_len > MSGLEN+1) - msg->msg_len = MSGLEN+1; - if (msg->msg_len) - if (!(msg->msg_answer && msg->msg_ext)) { - msg->msg_text[msg->msg_len] = '\0'; - printk("%s",msg->msg_text); - } - - if (msg->msg_ext && !msg->msg_answer) { - while (gdth_test_busy(ha)) - gdth_delay(0); - cmdp->Service = SCREENSERVICE; - cmdp->RequestBuffer = SCREEN_CMND; - gdth_get_cmd_index(ha); - gdth_set_sema0(ha); - cmdp->OpCode = GDT_READ; - cmdp->BoardNode = LOCALBOARD; - cmdp->u.screen.reserved = 0; - cmdp->u.screen.su.msg.msg_handle= msg->msg_handle; - cmdp->u.screen.su.msg.msg_addr = ha->msg_phys; - ha->cmd_offs_dpmem = 0; - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) - + sizeof(u64); - ha->cmd_cnt = 0; - gdth_copy_command(ha); - gdth_release_event(ha); - return 0; - } - - if (msg->msg_answer && msg->msg_alen) { - /* default answers (getchar() not possible) */ - if (msg->msg_alen == 1) { - msg->msg_alen = 0; - msg->msg_len = 1; - msg->msg_text[0] = 0; - } else { - msg->msg_alen -= 2; - msg->msg_len = 2; - msg->msg_text[0] = 1; - msg->msg_text[1] = 0; - } - msg->msg_ext = 0; - msg->msg_answer = 0; - while (gdth_test_busy(ha)) - gdth_delay(0); - cmdp->Service = SCREENSERVICE; - cmdp->RequestBuffer = SCREEN_CMND; - gdth_get_cmd_index(ha); - gdth_set_sema0(ha); - cmdp->OpCode = GDT_WRITE; - cmdp->BoardNode = LOCALBOARD; - cmdp->u.screen.reserved = 0; - cmdp->u.screen.su.msg.msg_handle= msg->msg_handle; - cmdp->u.screen.su.msg.msg_addr = ha->msg_phys; - ha->cmd_offs_dpmem = 0; - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) - + sizeof(u64); - ha->cmd_cnt = 0; - gdth_copy_command(ha); - gdth_release_event(ha); - return 0; - } - printk("\n"); - - } else { - b = scp->device->channel; - t = scp->device->id; - if (cmndinfo->OpCode == -1 && b != ha->virt_bus) { - ha->raw[BUS_L2P(ha,b)].io_cnt[t]--; - } - /* cache or raw service */ - if (ha->status == S_BSY) { - TRACE2(("Controller busy -> retry !\n")); - if (cmndinfo->OpCode == GDT_MOUNT) - cmndinfo->OpCode = GDT_CLUST_INFO; - /* retry */ - return 2; - } - if (scsi_bufflen(scp)) - dma_unmap_sg(&ha->pdev->dev, scsi_sglist(scp), scsi_sg_count(scp), - cmndinfo->dma_dir); - - if (cmndinfo->sense_paddr) - dma_unmap_page(&ha->pdev->dev, cmndinfo->sense_paddr, 16, - DMA_FROM_DEVICE); - - if (ha->status == S_OK) { - cmndinfo->status = S_OK; - cmndinfo->info = ha->info; - if (cmndinfo->OpCode != -1) { - TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n", - cmndinfo->OpCode)); - /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */ - if (cmndinfo->OpCode == GDT_CLUST_INFO) { - ha->hdr[t].cluster_type = (u8)ha->info; - if (!(ha->hdr[t].cluster_type & - CLUSTER_MOUNTED)) { - /* NOT MOUNTED -> MOUNT */ - cmndinfo->OpCode = GDT_MOUNT; - if (ha->hdr[t].cluster_type & - CLUSTER_RESERVED) { - /* cluster drive RESERVED (on the other node) */ - cmndinfo->phase = -2; /* reservation conflict */ - } - } else { - cmndinfo->OpCode = -1; - } - } else { - if (cmndinfo->OpCode == GDT_MOUNT) { - ha->hdr[t].cluster_type |= CLUSTER_MOUNTED; - ha->hdr[t].media_changed = TRUE; - } else if (cmndinfo->OpCode == GDT_UNMOUNT) { - ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED; - ha->hdr[t].media_changed = TRUE; - } - cmndinfo->OpCode = -1; - } - /* retry */ - cmndinfo->priority = HIGH_PRI; - return 2; - } else { - /* RESERVE/RELEASE ? */ - if (scp->cmnd[0] == RESERVE) { - ha->hdr[t].cluster_type |= CLUSTER_RESERVED; - } else if (scp->cmnd[0] == RELEASE) { - ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED; - } - scp->result = DID_OK << 16; - scp->sense_buffer[0] = 0; - } - } else { - cmndinfo->status = ha->status; - cmndinfo->info = ha->info; - - if (cmndinfo->OpCode != -1) { - TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n", - cmndinfo->OpCode, ha->status)); - if (cmndinfo->OpCode == GDT_SCAN_START || - cmndinfo->OpCode == GDT_SCAN_END) { - cmndinfo->OpCode = -1; - /* retry */ - cmndinfo->priority = HIGH_PRI; - return 2; - } - memset((char*)scp->sense_buffer,0,16); - scp->sense_buffer[0] = 0x70; - scp->sense_buffer[2] = NOT_READY; - scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1); - } else if (service == CACHESERVICE) { - if (ha->status == S_CACHE_UNKNOWN && - (ha->hdr[t].cluster_type & - CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) { - /* bus reset -> force GDT_CLUST_INFO */ - ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED; - } - memset((char*)scp->sense_buffer,0,16); - if (ha->status == (u16)S_CACHE_RESERV) { - scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1); - } else { - scp->sense_buffer[0] = 0x70; - scp->sense_buffer[2] = NOT_READY; - scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1); - } - if (!cmndinfo->internal_command) { - ha->dvr.size = sizeof(ha->dvr.eu.sync); - ha->dvr.eu.sync.ionode = ha->hanum; - ha->dvr.eu.sync.service = service; - ha->dvr.eu.sync.status = ha->status; - ha->dvr.eu.sync.info = ha->info; - ha->dvr.eu.sync.hostdrive = t; - if (ha->status >= 0x8000) - gdth_store_event(ha, ES_SYNC, 0, &ha->dvr); - else - gdth_store_event(ha, ES_SYNC, service, &ha->dvr); - } - } else { - /* sense buffer filled from controller firmware (DMA) */ - if (ha->status != S_RAW_SCSI || ha->info >= 0x100) { - scp->result = DID_BAD_TARGET << 16; - } else { - scp->result = (DID_OK << 16) | ha->info; - } - } - } - if (!cmndinfo->wait_for_completion) - cmndinfo->wait_for_completion++; - else - return 1; - } - - return 0; -} - -static char *async_cache_tab[] = { -/* 0*/ "\011\000\002\002\002\004\002\006\004" - "GDT HA %u, service %u, async. status %u/%lu unknown", -/* 1*/ "\011\000\002\002\002\004\002\006\004" - "GDT HA %u, service %u, async. status %u/%lu unknown", -/* 2*/ "\005\000\002\006\004" - "GDT HA %u, Host Drive %lu not ready", -/* 3*/ "\005\000\002\006\004" - "GDT HA %u, Host Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced", -/* 4*/ "\005\000\002\006\004" - "GDT HA %u, mirror update on Host Drive %lu failed", -/* 5*/ "\005\000\002\006\004" - "GDT HA %u, Mirror Drive %lu failed", -/* 6*/ "\005\000\002\006\004" - "GDT HA %u, Mirror Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced", -/* 7*/ "\005\000\002\006\004" - "GDT HA %u, Host Drive %lu write protected", -/* 8*/ "\005\000\002\006\004" - "GDT HA %u, media changed in Host Drive %lu", -/* 9*/ "\005\000\002\006\004" - "GDT HA %u, Host Drive %lu is offline", -/*10*/ "\005\000\002\006\004" - "GDT HA %u, media change of Mirror Drive %lu", -/*11*/ "\005\000\002\006\004" - "GDT HA %u, Mirror Drive %lu is write protected", -/*12*/ "\005\000\002\006\004" - "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!", -/*13*/ "\007\000\002\006\002\010\002" - "GDT HA %u, Array Drive %u: Cache Drive %u failed", -/*14*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: FAIL state entered", -/*15*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: error", -/*16*/ "\007\000\002\006\002\010\002" - "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u", -/*17*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: parity build failed", -/*18*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: drive rebuild failed", -/*19*/ "\005\000\002\010\002" - "GDT HA %u, Test of Hot Fix %u failed", -/*20*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: drive build finished successfully", -/*21*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: drive rebuild finished successfully", -/*22*/ "\007\000\002\006\002\010\002" - "GDT HA %u, Array Drive %u: Hot Fix %u activated", -/*23*/ "\005\000\002\006\002" - "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error", -/*24*/ "\005\000\002\010\002" - "GDT HA %u, mirror update on Cache Drive %u completed", -/*25*/ "\005\000\002\010\002" - "GDT HA %u, mirror update on Cache Drive %lu failed", -/*26*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: drive rebuild started", -/*27*/ "\005\000\002\012\001" - "GDT HA %u, Fault bus %u: SHELF OK detected", -/*28*/ "\005\000\002\012\001" - "GDT HA %u, Fault bus %u: SHELF not OK detected", -/*29*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started", -/*30*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: new disk detected", -/*31*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: old disk detected", -/*32*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid", -/*33*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: invalid device detected", -/*34*/ "\011\000\002\012\001\013\001\006\004" - "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)", -/*35*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: disk write protected", -/*36*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: disk not available", -/*37*/ "\007\000\002\012\001\006\004" - "GDT HA %u, Fault bus %u: swap detected (%lu)", -/*38*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully", -/*39*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug", -/*40*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted", -/*41*/ "\007\000\002\012\001\013\001" - "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started", -/*42*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: drive build started", -/*43*/ "\003\000\002" - "GDT HA %u, DRAM parity error detected", -/*44*/ "\005\000\002\006\002" - "GDT HA %u, Mirror Drive %u: update started", -/*45*/ "\007\000\002\006\002\010\002" - "GDT HA %u, Mirror Drive %u: Hot Fix %u activated", -/*46*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available", -/*47*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available", -/*48*/ "\005\000\002\006\002" - "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available", -/*49*/ "\005\000\002\006\002" - "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available", -/*50*/ "\007\000\002\012\001\013\001" - "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received", -/*51*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: expand started", -/*52*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: expand finished successfully", -/*53*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: expand failed", -/*54*/ "\003\000\002" - "GDT HA %u, CPU temperature critical", -/*55*/ "\003\000\002" - "GDT HA %u, CPU temperature OK", -/*56*/ "\005\000\002\006\004" - "GDT HA %u, Host drive %lu created", -/*57*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: expand restarted", -/*58*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: expand stopped", -/*59*/ "\005\000\002\010\002" - "GDT HA %u, Mirror Drive %u: drive build quited", -/*60*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: parity build quited", -/*61*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: drive rebuild quited", -/*62*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: parity verify started", -/*63*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: parity verify done", -/*64*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: parity verify failed", -/*65*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: parity error detected", -/*66*/ "\005\000\002\006\002" - "GDT HA %u, Array Drive %u: parity verify quited", -/*67*/ "\005\000\002\006\002" - "GDT HA %u, Host Drive %u reserved", -/*68*/ "\005\000\002\006\002" - "GDT HA %u, Host Drive %u mounted and released", -/*69*/ "\005\000\002\006\002" - "GDT HA %u, Host Drive %u released", -/*70*/ "\003\000\002" - "GDT HA %u, DRAM error detected and corrected with ECC", -/*71*/ "\003\000\002" - "GDT HA %u, Uncorrectable DRAM error detected with ECC", -/*72*/ "\011\000\002\012\001\013\001\014\001" - "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block", -/*73*/ "\005\000\002\006\002" - "GDT HA %u, Host drive %u resetted locally", -/*74*/ "\005\000\002\006\002" - "GDT HA %u, Host drive %u resetted remotely", -/*75*/ "\003\000\002" - "GDT HA %u, async. status 75 unknown", -}; - - -static int gdth_async_event(gdth_ha_str *ha) -{ - gdth_cmd_str *cmdp; - int cmd_index; - - cmdp= ha->pccb; - TRACE2(("gdth_async_event() ha %d serv %d\n", - ha->hanum, ha->service)); - - if (ha->service == SCREENSERVICE) { - if (ha->status == MSG_REQUEST) { - while (gdth_test_busy(ha)) - gdth_delay(0); - cmdp->Service = SCREENSERVICE; - cmdp->RequestBuffer = SCREEN_CMND; - cmd_index = gdth_get_cmd_index(ha); - gdth_set_sema0(ha); - cmdp->OpCode = GDT_READ; - cmdp->BoardNode = LOCALBOARD; - cmdp->u.screen.reserved = 0; - cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE; - cmdp->u.screen.su.msg.msg_addr = ha->msg_phys; - ha->cmd_offs_dpmem = 0; - ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) - + sizeof(u64); - ha->cmd_cnt = 0; - gdth_copy_command(ha); - printk("[PCI %d/%d] ",(u16)(ha->brd_phys>>8), - (u16)((ha->brd_phys>>3)&0x1f)); - gdth_release_event(ha); - } - - } else { - if (ha->type == GDT_PCIMPR && - (ha->fw_vers & 0xff) >= 0x1a) { - ha->dvr.size = 0; - ha->dvr.eu.async.ionode = ha->hanum; - ha->dvr.eu.async.status = ha->status; - /* severity and event_string already set! */ - } else { - ha->dvr.size = sizeof(ha->dvr.eu.async); - ha->dvr.eu.async.ionode = ha->hanum; - ha->dvr.eu.async.service = ha->service; - ha->dvr.eu.async.status = ha->status; - ha->dvr.eu.async.info = ha->info; - *(u32 *)ha->dvr.eu.async.scsi_coord = ha->info2; - } - gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr ); - gdth_log_event( &ha->dvr, NULL ); - - /* new host drive from expand? */ - if (ha->service == CACHESERVICE && ha->status == 56) { - TRACE2(("gdth_async_event(): new host drive %d created\n", - (u16)ha->info)); - /* gdth_analyse_hdrive(hanum, (u16)ha->info); */ - } - } - return 1; -} - -static void gdth_log_event(gdth_evt_data *dvr, char *buffer) -{ - gdth_stackframe stack; - char *f = NULL; - int i,j; - - TRACE2(("gdth_log_event()\n")); - if (dvr->size == 0) { - if (buffer == NULL) { - printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string); - } else { - sprintf(buffer,"Adapter %d: %s\n", - dvr->eu.async.ionode,dvr->event_string); - } - } else if (dvr->eu.async.service == CACHESERVICE && - INDEX_OK(dvr->eu.async.status, async_cache_tab)) { - TRACE2(("GDT: Async. event cache service, event no.: %d\n", - dvr->eu.async.status)); - - f = async_cache_tab[dvr->eu.async.status]; - - /* i: parameter to push, j: stack element to fill */ - for (j=0,i=1; i < f[0]; i+=2) { - switch (f[i+1]) { - case 4: - stack.b[j++] = *(u32*)&dvr->eu.stream[(int)f[i]]; - break; - case 2: - stack.b[j++] = *(u16*)&dvr->eu.stream[(int)f[i]]; - break; - case 1: - stack.b[j++] = *(u8*)&dvr->eu.stream[(int)f[i]]; - break; - default: - break; - } - } - - if (buffer == NULL) { - printk(&f[(int)f[0]],stack); - printk("\n"); - } else { - sprintf(buffer,&f[(int)f[0]],stack); - } - - } else { - if (buffer == NULL) { - printk("GDT HA %u, Unknown async. event service %d event no. %d\n", - dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status); - } else { - sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d", - dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status); - } - } -} - -#ifdef GDTH_STATISTICS -static u8 gdth_timer_running; - -static void gdth_timeout(struct timer_list *unused) -{ - u32 i; - struct scsi_cmnd *nscp; - gdth_ha_str *ha; - unsigned long flags; - - if(unlikely(list_empty(&gdth_instances))) { - gdth_timer_running = 0; - return; - } - - ha = list_first_entry(&gdth_instances, gdth_ha_str, list); - spin_lock_irqsave(&ha->smp_lock, flags); - - for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i) - if (ha->cmd_tab[i].cmnd != UNUSED_CMND) - ++act_stats; - - for (act_rq=0, - nscp=ha->req_first; nscp; nscp=(struct scsi_cmnd*)nscp->SCp.ptr) - ++act_rq; - - TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n", - act_ints, act_ios, act_stats, act_rq)); - act_ints = act_ios = 0; - - gdth_timer.expires = jiffies + 30 * HZ; - add_timer(&gdth_timer); - spin_unlock_irqrestore(&ha->smp_lock, flags); -} - -static void gdth_timer_init(void) -{ - if (gdth_timer_running) - return; - gdth_timer_running = 1; - TRACE2(("gdth_detect(): Initializing timer !\n")); - gdth_timer.expires = jiffies + HZ; - add_timer(&gdth_timer); -} -#else -static inline void gdth_timer_init(void) -{ -} -#endif - -static void __init internal_setup(char *str,int *ints) -{ - int i; - char *cur_str, *argv; - - TRACE2(("internal_setup() str %s ints[0] %d\n", - str ? str:"NULL", ints ? ints[0]:0)); - - /* analyse string */ - argv = str; - while (argv && (cur_str = strchr(argv, ':'))) { - int val = 0, c = *++cur_str; - - if (c == 'n' || c == 'N') - val = 0; - else if (c == 'y' || c == 'Y') - val = 1; - else - val = (int)simple_strtoul(cur_str, NULL, 0); - - if (!strncmp(argv, "disable:", 8)) - disable = val; - else if (!strncmp(argv, "reserve_mode:", 13)) - reserve_mode = val; - else if (!strncmp(argv, "reverse_scan:", 13)) - reverse_scan = val; - else if (!strncmp(argv, "hdr_channel:", 12)) - hdr_channel = val; - else if (!strncmp(argv, "max_ids:", 8)) - max_ids = val; - else if (!strncmp(argv, "rescan:", 7)) - rescan = val; - else if (!strncmp(argv, "shared_access:", 14)) - shared_access = val; - else if (!strncmp(argv, "reserve_list:", 13)) { - reserve_list[0] = val; - for (i = 1; i < MAX_RES_ARGS; i++) { - cur_str = strchr(cur_str, ','); - if (!cur_str) - break; - if (!isdigit((int)*++cur_str)) { - --cur_str; - break; - } - reserve_list[i] = - (int)simple_strtoul(cur_str, NULL, 0); - } - if (!cur_str) - break; - argv = ++cur_str; - continue; - } - - if ((argv = strchr(argv, ','))) - ++argv; - } -} - -int __init option_setup(char *str) -{ - int ints[MAXHA]; - char *cur = str; - int i = 1; - - TRACE2(("option_setup() str %s\n", str ? str:"NULL")); - - while (cur && isdigit(*cur) && i < MAXHA) { - ints[i++] = simple_strtoul(cur, NULL, 0); - if ((cur = strchr(cur, ',')) != NULL) cur++; - } - - ints[0] = i - 1; - internal_setup(cur, ints); - return 1; -} - -static const char *gdth_ctr_name(gdth_ha_str *ha) -{ - TRACE2(("gdth_ctr_name()\n")); - - if (ha->type == GDT_PCI) { - switch (ha->pdev->device) { - case PCI_DEVICE_ID_VORTEX_GDT60x0: - return("GDT6000/6020/6050"); - case PCI_DEVICE_ID_VORTEX_GDT6000B: - return("GDT6000B/6010"); - } - } - /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */ - - return(""); -} - -static const char *gdth_info(struct Scsi_Host *shp) -{ - gdth_ha_str *ha = shost_priv(shp); - - TRACE2(("gdth_info()\n")); - return ((const char *)ha->binfo.type_string); -} - -static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp) -{ - gdth_ha_str *ha = shost_priv(scp->device->host); - struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp); - u8 b, t; - unsigned long flags; - enum blk_eh_timer_return retval = BLK_EH_DONE; - - TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__)); - b = scp->device->channel; - t = scp->device->id; - - /* - * We don't really honor the command timeout, but we try to - * honor 6 times of the actual command timeout! So reset the - * timer if this is less than 6th timeout on this command! - */ - if (++cmndinfo->timeout_count < 6) - retval = BLK_EH_RESET_TIMER; - - /* Reset the timeout if it is locked IO */ - spin_lock_irqsave(&ha->smp_lock, flags); - if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) || - (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) { - TRACE2(("%s(): locked IO, reset timeout\n", __func__)); - retval = BLK_EH_RESET_TIMER; - } - spin_unlock_irqrestore(&ha->smp_lock, flags); - - return retval; -} - - -static int gdth_eh_bus_reset(struct scsi_cmnd *scp) -{ - gdth_ha_str *ha = shost_priv(scp->device->host); - int i; - unsigned long flags; - struct scsi_cmnd *cmnd; - u8 b; - - TRACE2(("gdth_eh_bus_reset()\n")); - - b = scp->device->channel; - - /* clear command tab */ - spin_lock_irqsave(&ha->smp_lock, flags); - for (i = 0; i < GDTH_MAXCMDS; ++i) { - cmnd = ha->cmd_tab[i].cmnd; - if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b) - ha->cmd_tab[i].cmnd = UNUSED_CMND; - } - spin_unlock_irqrestore(&ha->smp_lock, flags); - - if (b == ha->virt_bus) { - /* host drives */ - for (i = 0; i < MAX_HDRIVES; ++i) { - if (ha->hdr[i].present) { - spin_lock_irqsave(&ha->smp_lock, flags); - gdth_polling = TRUE; - while (gdth_test_busy(ha)) - gdth_delay(0); - if (gdth_internal_cmd(ha, CACHESERVICE, - GDT_CLUST_RESET, i, 0, 0)) - ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED; - gdth_polling = FALSE; - spin_unlock_irqrestore(&ha->smp_lock, flags); - } - } - } else { - /* raw devices */ - spin_lock_irqsave(&ha->smp_lock, flags); - for (i = 0; i < MAXID; ++i) - ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0; - gdth_polling = TRUE; - while (gdth_test_busy(ha)) - gdth_delay(0); - gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS, - BUS_L2P(ha,b), 0, 0); - gdth_polling = FALSE; - spin_unlock_irqrestore(&ha->smp_lock, flags); - } - return SUCCESS; -} - -static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip) -{ - u8 b, t; - gdth_ha_str *ha = shost_priv(sdev->host); - struct scsi_device *sd; - unsigned capacity; - - sd = sdev; - capacity = cap; - b = sd->channel; - t = sd->id; - TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t)); - - if (b != ha->virt_bus || ha->hdr[t].heads == 0) { - /* raw device or host drive without mapping information */ - TRACE2(("Evaluate mapping\n")); - gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]); - } else { - ip[0] = ha->hdr[t].heads; - ip[1] = ha->hdr[t].secs; - ip[2] = capacity / ip[0] / ip[1]; - } - - TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n", - ip[0],ip[1],ip[2])); - return 0; -} - - -static int gdth_queuecommand_lck(struct scsi_cmnd *scp, - void (*done)(struct scsi_cmnd *)) -{ - gdth_ha_str *ha = shost_priv(scp->device->host); - struct gdth_cmndinfo *cmndinfo; - - TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0])); - - cmndinfo = gdth_get_cmndinfo(ha); - BUG_ON(!cmndinfo); - - scp->scsi_done = done; - cmndinfo->timeout_count = 0; - cmndinfo->priority = DEFAULT_PRI; - - return __gdth_queuecommand(ha, scp, cmndinfo); -} - -static DEF_SCSI_QCMD(gdth_queuecommand) - -static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp, - struct gdth_cmndinfo *cmndinfo) -{ - scp->host_scribble = (unsigned char *)cmndinfo; - cmndinfo->wait_for_completion = 1; - cmndinfo->phase = -1; - cmndinfo->OpCode = -1; - -#ifdef GDTH_STATISTICS - ++act_ios; -#endif - - gdth_putq(ha, scp, cmndinfo->priority); - gdth_next(ha); - return 0; -} - - -static int gdth_open(struct inode *inode, struct file *filep) -{ - gdth_ha_str *ha; - - mutex_lock(&gdth_mutex); - list_for_each_entry(ha, &gdth_instances, list) { - if (!ha->sdev) - ha->sdev = scsi_get_host_dev(ha->shost); - } - mutex_unlock(&gdth_mutex); - - TRACE(("gdth_open()\n")); - return 0; -} - -static int gdth_close(struct inode *inode, struct file *filep) -{ - TRACE(("gdth_close()\n")); - return 0; -} - -static int ioc_event(void __user *arg) -{ - gdth_ioctl_event evt; - gdth_ha_str *ha; - unsigned long flags; - - if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event))) - return -EFAULT; - ha = gdth_find_ha(evt.ionode); - if (!ha) - return -EFAULT; - - if (evt.erase == 0xff) { - if (evt.event.event_source == ES_TEST) - evt.event.event_data.size=sizeof(evt.event.event_data.eu.test); - else if (evt.event.event_source == ES_DRIVER) - evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver); - else if (evt.event.event_source == ES_SYNC) - evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync); - else - evt.event.event_data.size=sizeof(evt.event.event_data.eu.async); - spin_lock_irqsave(&ha->smp_lock, flags); - gdth_store_event(ha, evt.event.event_source, evt.event.event_idx, - &evt.event.event_data); - spin_unlock_irqrestore(&ha->smp_lock, flags); - } else if (evt.erase == 0xfe) { - gdth_clear_events(); - } else if (evt.erase == 0) { - evt.handle = gdth_read_event(ha, evt.handle, &evt.event); - } else { - gdth_readapp_event(ha, evt.erase, &evt.event); - } - if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event))) - return -EFAULT; - return 0; -} - -static int ioc_lockdrv(void __user *arg) -{ - gdth_ioctl_lockdrv ldrv; - u8 i, j; - unsigned long flags; - gdth_ha_str *ha; - - if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv))) - return -EFAULT; - ha = gdth_find_ha(ldrv.ionode); - if (!ha) - return -EFAULT; - - for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) { - j = ldrv.drives[i]; - if (j >= MAX_HDRIVES || !ha->hdr[j].present) - continue; - if (ldrv.lock) { - spin_lock_irqsave(&ha->smp_lock, flags); - ha->hdr[j].lock = 1; - spin_unlock_irqrestore(&ha->smp_lock, flags); - gdth_wait_completion(ha, ha->bus_cnt, j); - } else { - spin_lock_irqsave(&ha->smp_lock, flags); - ha->hdr[j].lock = 0; - spin_unlock_irqrestore(&ha->smp_lock, flags); - gdth_next(ha); - } - } - return 0; -} - -static int ioc_resetdrv(void __user *arg, char *cmnd) -{ - gdth_ioctl_reset res; - gdth_cmd_str cmd; - gdth_ha_str *ha; - int rval; - - if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) || - res.number >= MAX_HDRIVES) - return -EFAULT; - ha = gdth_find_ha(res.ionode); - if (!ha) - return -EFAULT; - - if (!ha->hdr[res.number].present) - return 0; - memset(&cmd, 0, sizeof(gdth_cmd_str)); - cmd.Service = CACHESERVICE; - cmd.OpCode = GDT_CLUST_RESET; - if (ha->cache_feat & GDT_64BIT) - cmd.u.cache64.DeviceNo = res.number; - else - cmd.u.cache.DeviceNo = res.number; - - rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL); - if (rval < 0) - return rval; - res.status = rval; - - if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset))) - return -EFAULT; - return 0; -} - -static void gdth_ioc_cacheservice(gdth_ha_str *ha, gdth_ioctl_general *gen, - u64 paddr) -{ - if (ha->cache_feat & GDT_64BIT) { - /* copy elements from 32-bit IOCTL structure */ - gen->command.u.cache64.BlockCnt = gen->command.u.cache.BlockCnt; - gen->command.u.cache64.BlockNo = gen->command.u.cache.BlockNo; - gen->command.u.cache64.DeviceNo = gen->command.u.cache.DeviceNo; - - if (ha->cache_feat & SCATTER_GATHER) { - gen->command.u.cache64.DestAddr = (u64)-1; - gen->command.u.cache64.sg_canz = 1; - gen->command.u.cache64.sg_lst[0].sg_ptr = paddr; - gen->command.u.cache64.sg_lst[0].sg_len = gen->data_len; - gen->command.u.cache64.sg_lst[1].sg_len = 0; - } else { - gen->command.u.cache64.DestAddr = paddr; - gen->command.u.cache64.sg_canz = 0; - } - } else { - if (ha->cache_feat & SCATTER_GATHER) { - gen->command.u.cache.DestAddr = 0xffffffff; - gen->command.u.cache.sg_canz = 1; - gen->command.u.cache.sg_lst[0].sg_ptr = (u32)paddr; - gen->command.u.cache.sg_lst[0].sg_len = gen->data_len; - gen->command.u.cache.sg_lst[1].sg_len = 0; - } else { - gen->command.u.cache.DestAddr = paddr; - gen->command.u.cache.sg_canz = 0; - } - } -} - -static void gdth_ioc_scsiraw(gdth_ha_str *ha, gdth_ioctl_general *gen, - u64 paddr) -{ - if (ha->raw_feat & GDT_64BIT) { - /* copy elements from 32-bit IOCTL structure */ - char cmd[16]; - - gen->command.u.raw64.sense_len = gen->command.u.raw.sense_len; - gen->command.u.raw64.bus = gen->command.u.raw.bus; - gen->command.u.raw64.lun = gen->command.u.raw.lun; - gen->command.u.raw64.target = gen->command.u.raw.target; - memcpy(cmd, gen->command.u.raw.cmd, 16); - memcpy(gen->command.u.raw64.cmd, cmd, 16); - gen->command.u.raw64.clen = gen->command.u.raw.clen; - gen->command.u.raw64.sdlen = gen->command.u.raw.sdlen; - gen->command.u.raw64.direction = gen->command.u.raw.direction; - - /* addresses */ - if (ha->raw_feat & SCATTER_GATHER) { - gen->command.u.raw64.sdata = (u64)-1; - gen->command.u.raw64.sg_ranz = 1; - gen->command.u.raw64.sg_lst[0].sg_ptr = paddr; - gen->command.u.raw64.sg_lst[0].sg_len = gen->data_len; - gen->command.u.raw64.sg_lst[1].sg_len = 0; - } else { - gen->command.u.raw64.sdata = paddr; - gen->command.u.raw64.sg_ranz = 0; - } - - gen->command.u.raw64.sense_data = paddr + gen->data_len; - } else { - if (ha->raw_feat & SCATTER_GATHER) { - gen->command.u.raw.sdata = 0xffffffff; - gen->command.u.raw.sg_ranz = 1; - gen->command.u.raw.sg_lst[0].sg_ptr = (u32)paddr; - gen->command.u.raw.sg_lst[0].sg_len = gen->data_len; - gen->command.u.raw.sg_lst[1].sg_len = 0; - } else { - gen->command.u.raw.sdata = paddr; - gen->command.u.raw.sg_ranz = 0; - } - - gen->command.u.raw.sense_data = (u32)paddr + gen->data_len; - } -} - -static int ioc_general(void __user *arg, char *cmnd) -{ - gdth_ioctl_general gen; - gdth_ha_str *ha; - char *buf = NULL; - dma_addr_t paddr; - int rval; - - if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general))) - return -EFAULT; - ha = gdth_find_ha(gen.ionode); - if (!ha) - return -EFAULT; - - if (gen.data_len > INT_MAX) - return -EINVAL; - if (gen.sense_len > INT_MAX) - return -EINVAL; - if (gen.data_len + gen.sense_len > INT_MAX) - return -EINVAL; - - if (gen.data_len + gen.sense_len > 0) { - buf = dma_alloc_coherent(&ha->pdev->dev, - gen.data_len + gen.sense_len, &paddr, - GFP_KERNEL); - if (!buf) - return -EFAULT; - - rval = -EFAULT; - if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general), - gen.data_len + gen.sense_len)) - goto out_free_buf; - - if (gen.command.OpCode == GDT_IOCTL) - gen.command.u.ioctl.p_param = paddr; - else if (gen.command.Service == CACHESERVICE) - gdth_ioc_cacheservice(ha, &gen, paddr); - else if (gen.command.Service == SCSIRAWSERVICE) - gdth_ioc_scsiraw(ha, &gen, paddr); - else - goto out_free_buf; - } - - rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, - &gen.info); - if (rval < 0) - goto out_free_buf; - gen.status = rval; - - rval = -EFAULT; - if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf, - gen.data_len + gen.sense_len)) - goto out_free_buf; - if (copy_to_user(arg, &gen, - sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) - goto out_free_buf; - - rval = 0; -out_free_buf: - if (buf) - dma_free_coherent(&ha->pdev->dev, gen.data_len + gen.sense_len, - buf, paddr); - return rval; -} - -static int ioc_hdrlist(void __user *arg, char *cmnd) -{ - gdth_ioctl_rescan *rsc; - gdth_cmd_str *cmd; - gdth_ha_str *ha; - u8 i; - int rc = -ENOMEM; - u32 cluster_type = 0; - - rsc = kmalloc(sizeof(*rsc), GFP_KERNEL); - cmd = kmalloc(sizeof(*cmd), GFP_KERNEL); - if (!rsc || !cmd) - goto free_fail; - - if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) || - (NULL == (ha = gdth_find_ha(rsc->ionode)))) { - rc = -EFAULT; - goto free_fail; - } - memset(cmd, 0, sizeof(gdth_cmd_str)); - - for (i = 0; i < MAX_HDRIVES; ++i) { - if (!ha->hdr[i].present) { - rsc->hdr_list[i].bus = 0xff; - continue; - } - rsc->hdr_list[i].bus = ha->virt_bus; - rsc->hdr_list[i].target = i; - rsc->hdr_list[i].lun = 0; - rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type; - if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) { - cmd->Service = CACHESERVICE; - cmd->OpCode = GDT_CLUST_INFO; - if (ha->cache_feat & GDT_64BIT) - cmd->u.cache64.DeviceNo = i; - else - cmd->u.cache.DeviceNo = i; - if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK) - rsc->hdr_list[i].cluster_type = cluster_type; - } - } - - if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan))) - rc = -EFAULT; - else - rc = 0; - -free_fail: - kfree(rsc); - kfree(cmd); - return rc; -} - -static int ioc_rescan(void __user *arg, char *cmnd) -{ - gdth_ioctl_rescan *rsc; - gdth_cmd_str *cmd; - u16 i, status, hdr_cnt; - u32 info; - int cyls, hds, secs; - int rc = -ENOMEM; - unsigned long flags; - gdth_ha_str *ha; - - rsc = kmalloc(sizeof(*rsc), GFP_KERNEL); - cmd = kmalloc(sizeof(*cmd), GFP_KERNEL); - if (!cmd || !rsc) - goto free_fail; - - if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) || - (NULL == (ha = gdth_find_ha(rsc->ionode)))) { - rc = -EFAULT; - goto free_fail; - } - memset(cmd, 0, sizeof(gdth_cmd_str)); - - if (rsc->flag == 0) { - /* old method: re-init. cache service */ - cmd->Service = CACHESERVICE; - if (ha->cache_feat & GDT_64BIT) { - cmd->OpCode = GDT_X_INIT_HOST; - cmd->u.cache64.DeviceNo = LINUX_OS; - } else { - cmd->OpCode = GDT_INIT; - cmd->u.cache.DeviceNo = LINUX_OS; - } - - status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info); - i = 0; - hdr_cnt = (status == S_OK ? (u16)info : 0); - } else { - i = rsc->hdr_no; - hdr_cnt = i + 1; - } - - for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) { - cmd->Service = CACHESERVICE; - cmd->OpCode = GDT_INFO; - if (ha->cache_feat & GDT_64BIT) - cmd->u.cache64.DeviceNo = i; - else - cmd->u.cache.DeviceNo = i; - - status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info); - - spin_lock_irqsave(&ha->smp_lock, flags); - rsc->hdr_list[i].bus = ha->virt_bus; - rsc->hdr_list[i].target = i; - rsc->hdr_list[i].lun = 0; - if (status != S_OK) { - ha->hdr[i].present = FALSE; - } else { - ha->hdr[i].present = TRUE; - ha->hdr[i].size = info; - /* evaluate mapping */ - ha->hdr[i].size &= ~SECS32; - gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs); - ha->hdr[i].heads = hds; - ha->hdr[i].secs = secs; - /* round size */ - ha->hdr[i].size = cyls * hds * secs; - } - spin_unlock_irqrestore(&ha->smp_lock, flags); - if (status != S_OK) - continue; - - /* extended info, if GDT_64BIT, for drives > 2 TB */ - /* but we need ha->info2, not yet stored in scp->SCp */ - - /* devtype, cluster info, R/W attribs */ - cmd->Service = CACHESERVICE; - cmd->OpCode = GDT_DEVTYPE; - if (ha->cache_feat & GDT_64BIT) - cmd->u.cache64.DeviceNo = i; - else - cmd->u.cache.DeviceNo = i; - - status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info); - - spin_lock_irqsave(&ha->smp_lock, flags); - ha->hdr[i].devtype = (status == S_OK ? (u16)info : 0); - spin_unlock_irqrestore(&ha->smp_lock, flags); - - cmd->Service = CACHESERVICE; - cmd->OpCode = GDT_CLUST_INFO; - if (ha->cache_feat & GDT_64BIT) - cmd->u.cache64.DeviceNo = i; - else - cmd->u.cache.DeviceNo = i; - - status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info); - - spin_lock_irqsave(&ha->smp_lock, flags); - ha->hdr[i].cluster_type = - ((status == S_OK && !shared_access) ? (u16)info : 0); - spin_unlock_irqrestore(&ha->smp_lock, flags); - rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type; - - cmd->Service = CACHESERVICE; - cmd->OpCode = GDT_RW_ATTRIBS; - if (ha->cache_feat & GDT_64BIT) - cmd->u.cache64.DeviceNo = i; - else - cmd->u.cache.DeviceNo = i; - - status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info); - - spin_lock_irqsave(&ha->smp_lock, flags); - ha->hdr[i].rw_attribs = (status == S_OK ? (u16)info : 0); - spin_unlock_irqrestore(&ha->smp_lock, flags); - } - - if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan))) - rc = -EFAULT; - else - rc = 0; - -free_fail: - kfree(rsc); - kfree(cmd); - return rc; -} - -static int gdth_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) -{ - gdth_ha_str *ha; - struct scsi_cmnd *scp; - unsigned long flags; - char cmnd[MAX_COMMAND_SIZE]; - void __user *argp = (void __user *)arg; - - memset(cmnd, 0xff, 12); - - TRACE(("gdth_ioctl() cmd 0x%x\n", cmd)); - - switch (cmd) { - case GDTIOCTL_CTRCNT: - { - int cnt = gdth_ctr_count; - if (put_user(cnt, (int __user *)argp)) - return -EFAULT; - break; - } - - case GDTIOCTL_DRVERS: - { - int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION; - if (put_user(ver, (int __user *)argp)) - return -EFAULT; - break; - } - - case GDTIOCTL_OSVERS: - { - gdth_ioctl_osvers osv; - - osv.version = (u8)(LINUX_VERSION_CODE >> 16); - osv.subversion = (u8)(LINUX_VERSION_CODE >> 8); - osv.revision = (u16)(LINUX_VERSION_CODE & 0xff); - if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers))) - return -EFAULT; - break; - } - - case GDTIOCTL_CTRTYPE: - { - gdth_ioctl_ctrtype ctrt; - - if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) || - (NULL == (ha = gdth_find_ha(ctrt.ionode)))) - return -EFAULT; - - if (ha->type != GDT_PCIMPR) { - ctrt.type = (u8)((ha->stype<<4) + 6); - } else { - ctrt.type = (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe); - if (ha->stype >= 0x300) - ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device; - else - ctrt.ext_type = 0x6000 | ha->stype; - } - ctrt.device_id = ha->pdev->device; - ctrt.sub_device_id = ha->pdev->subsystem_device; - ctrt.info = ha->brd_phys; - ctrt.oem_id = ha->oem_id; - if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype))) - return -EFAULT; - break; - } - - case GDTIOCTL_GENERAL: - return ioc_general(argp, cmnd); - - case GDTIOCTL_EVENT: - return ioc_event(argp); - - case GDTIOCTL_LOCKDRV: - return ioc_lockdrv(argp); - - case GDTIOCTL_LOCKCHN: - { - gdth_ioctl_lockchn lchn; - u8 i, j; - - if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) || - (NULL == (ha = gdth_find_ha(lchn.ionode)))) - return -EFAULT; - - i = lchn.channel; - if (i < ha->bus_cnt) { - if (lchn.lock) { - spin_lock_irqsave(&ha->smp_lock, flags); - ha->raw[i].lock = 1; - spin_unlock_irqrestore(&ha->smp_lock, flags); - for (j = 0; j < ha->tid_cnt; ++j) - gdth_wait_completion(ha, i, j); - } else { - spin_lock_irqsave(&ha->smp_lock, flags); - ha->raw[i].lock = 0; - spin_unlock_irqrestore(&ha->smp_lock, flags); - for (j = 0; j < ha->tid_cnt; ++j) - gdth_next(ha); - } - } - break; - } - - case GDTIOCTL_RESCAN: - return ioc_rescan(argp, cmnd); - - case GDTIOCTL_HDRLIST: - return ioc_hdrlist(argp, cmnd); - - case GDTIOCTL_RESET_BUS: - { - gdth_ioctl_reset res; - int rval; - - if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) || - (NULL == (ha = gdth_find_ha(res.ionode)))) - return -EFAULT; - - scp = kzalloc(sizeof(*scp), GFP_KERNEL); - if (!scp) - return -ENOMEM; - scp->device = ha->sdev; - scp->cmd_len = 12; - scp->device->channel = res.number; - rval = gdth_eh_bus_reset(scp); - res.status = (rval == SUCCESS ? S_OK : S_GENERR); - kfree(scp); - - if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset))) - return -EFAULT; - break; - } - - case GDTIOCTL_RESET_DRV: - return ioc_resetdrv(argp, cmnd); - - default: - break; - } - return 0; -} - -static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - int ret; - - mutex_lock(&gdth_mutex); - ret = gdth_ioctl(file, cmd, arg); - mutex_unlock(&gdth_mutex); - - return ret; -} - -/* flush routine */ -static void gdth_flush(gdth_ha_str *ha) -{ - int i; - gdth_cmd_str gdtcmd; - char cmnd[MAX_COMMAND_SIZE]; - memset(cmnd, 0xff, MAX_COMMAND_SIZE); - - TRACE2(("gdth_flush() hanum %d\n", ha->hanum)); - - for (i = 0; i < MAX_HDRIVES; ++i) { - if (ha->hdr[i].present) { - gdtcmd.BoardNode = LOCALBOARD; - gdtcmd.Service = CACHESERVICE; - gdtcmd.OpCode = GDT_FLUSH; - if (ha->cache_feat & GDT_64BIT) { - gdtcmd.u.cache64.DeviceNo = i; - gdtcmd.u.cache64.BlockNo = 1; - gdtcmd.u.cache64.sg_canz = 0; - } else { - gdtcmd.u.cache.DeviceNo = i; - gdtcmd.u.cache.BlockNo = 1; - gdtcmd.u.cache.sg_canz = 0; - } - TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i)); - - gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL); - } - } -} - -/* configure lun */ -static int gdth_slave_configure(struct scsi_device *sdev) -{ - sdev->skip_ms_page_3f = 1; - sdev->skip_ms_page_8 = 1; - return 0; -} - -static struct scsi_host_template gdth_template = { - .name = "GDT SCSI Disk Array Controller", - .info = gdth_info, - .queuecommand = gdth_queuecommand, - .eh_bus_reset_handler = gdth_eh_bus_reset, - .slave_configure = gdth_slave_configure, - .bios_param = gdth_bios_param, - .show_info = gdth_show_info, - .write_info = gdth_set_info, - .eh_timed_out = gdth_timed_out, - .proc_name = "gdth", - .can_queue = GDTH_MAXCMDS, - .this_id = -1, - .sg_tablesize = GDTH_MAXSG, - .cmd_per_lun = GDTH_MAXC_P_L, - .unchecked_isa_dma = 1, - .no_write_same = 1, -}; - -static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out) -{ - struct Scsi_Host *shp; - gdth_ha_str *ha; - dma_addr_t scratch_dma_handle = 0; - int error, i; - struct pci_dev *pdev = pcistr->pdev; - - *ha_out = NULL; - - shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str)); - if (!shp) - return -ENOMEM; - ha = shost_priv(shp); - - error = -ENODEV; - if (!gdth_init_pci(pdev, pcistr, ha)) - goto out_host_put; - - /* controller found and initialized */ - printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n", - pdev->bus->number, - PCI_SLOT(pdev->devfn), - ha->irq); - - error = request_irq(ha->irq, gdth_interrupt, - IRQF_SHARED, "gdth", ha); - if (error) { - printk("GDT-PCI: Unable to allocate IRQ\n"); - goto out_host_put; - } - - shp->unchecked_isa_dma = 0; - shp->irq = ha->irq; - shp->dma_channel = 0xff; - - ha->hanum = gdth_ctr_count++; - ha->shost = shp; - - ha->pccb = &ha->cmdext; - ha->ccb_phys = 0L; - - error = -ENOMEM; - - ha->pscratch = dma_alloc_coherent(&ha->pdev->dev, GDTH_SCRATCH, - &scratch_dma_handle, GFP_KERNEL); - if (!ha->pscratch) - goto out_free_irq; - ha->scratch_phys = scratch_dma_handle; - - ha->pmsg = dma_alloc_coherent(&ha->pdev->dev, sizeof(gdth_msg_str), - &scratch_dma_handle, GFP_KERNEL); - if (!ha->pmsg) - goto out_free_pscratch; - ha->msg_phys = scratch_dma_handle; - - ha->scratch_busy = FALSE; - ha->req_first = NULL; - ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES; - if (max_ids > 0 && max_ids < ha->tid_cnt) - ha->tid_cnt = max_ids; - for (i = 0; i < GDTH_MAXCMDS; ++i) - ha->cmd_tab[i].cmnd = UNUSED_CMND; - ha->scan_mode = rescan ? 0x10 : 0; - - error = -ENODEV; - if (!gdth_search_drives(ha)) { - printk("GDT-PCI %d: Error during device scan\n", ha->hanum); - goto out_free_pmsg; - } - - if (hdr_channel < 0 || hdr_channel > ha->bus_cnt) - hdr_channel = ha->bus_cnt; - ha->virt_bus = hdr_channel; - - /* 64-bit DMA only supported from FW >= x.43 */ - if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) || - !ha->dma64_support) { - if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { - printk(KERN_WARNING "GDT-PCI %d: " - "Unable to set 32-bit DMA\n", ha->hanum); - goto out_free_pmsg; - } - } else { - shp->max_cmd_len = 16; - if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { - printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum); - } else if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { - printk(KERN_WARNING "GDT-PCI %d: " - "Unable to set 64/32-bit DMA\n", ha->hanum); - goto out_free_pmsg; - } - } - - shp->max_id = ha->tid_cnt; - shp->max_lun = MAXLUN; - shp->max_channel = ha->bus_cnt; - - spin_lock_init(&ha->smp_lock); - gdth_enable_int(ha); - - error = scsi_add_host(shp, &pdev->dev); - if (error) - goto out_free_pmsg; - list_add_tail(&ha->list, &gdth_instances); - - pci_set_drvdata(ha->pdev, ha); - gdth_timer_init(); - - scsi_scan_host(shp); - - *ha_out = ha; - - return 0; - - out_free_pmsg: - dma_free_coherent(&ha->pdev->dev, sizeof(gdth_msg_str), - ha->pmsg, ha->msg_phys); - out_free_pscratch: - dma_free_coherent(&ha->pdev->dev, GDTH_SCRATCH, - ha->pscratch, ha->scratch_phys); - out_free_irq: - free_irq(ha->irq, ha); - gdth_ctr_count--; - out_host_put: - scsi_host_put(shp); - return error; -} - -static void gdth_remove_one(gdth_ha_str *ha) -{ - struct Scsi_Host *shp = ha->shost; - - TRACE2(("gdth_remove_one()\n")); - - scsi_remove_host(shp); - - gdth_flush(ha); - - if (ha->sdev) { - scsi_free_host_dev(ha->sdev); - ha->sdev = NULL; - } - - if (shp->irq) - free_irq(shp->irq,ha); - - if (ha->pscratch) - dma_free_coherent(&ha->pdev->dev, GDTH_SCRATCH, - ha->pscratch, ha->scratch_phys); - if (ha->pmsg) - dma_free_coherent(&ha->pdev->dev, sizeof(gdth_msg_str), - ha->pmsg, ha->msg_phys); - if (ha->ccb_phys) - dma_unmap_single(&ha->pdev->dev, ha->ccb_phys, - sizeof(gdth_cmd_str), DMA_BIDIRECTIONAL); - - scsi_host_put(shp); -} - -static int gdth_halt(struct notifier_block *nb, unsigned long event, void *buf) -{ - gdth_ha_str *ha; - - TRACE2(("gdth_halt() event %d\n", (int)event)); - if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) - return NOTIFY_DONE; - - list_for_each_entry(ha, &gdth_instances, list) - gdth_flush(ha); - - return NOTIFY_OK; -} - -static struct notifier_block gdth_notifier = { - gdth_halt, NULL, 0 -}; - -static int __init gdth_init(void) -{ - if (disable) { - printk("GDT-HA: Controller driver disabled from" - " command line !\n"); - return 0; - } - - printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n", - GDTH_VERSION_STR); - - /* initializations */ - gdth_polling = TRUE; - gdth_clear_events(); - timer_setup(&gdth_timer, gdth_timeout, 0); - - /* scanning for PCI controllers */ - if (pci_register_driver(&gdth_pci_driver)) { - gdth_ha_str *ha; - - list_for_each_entry(ha, &gdth_instances, list) - gdth_remove_one(ha); - return -ENODEV; - } - - TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count)); - - major = register_chrdev(0,"gdth", &gdth_fops); - register_reboot_notifier(&gdth_notifier); - gdth_polling = FALSE; - return 0; -} - -static void __exit gdth_exit(void) -{ - gdth_ha_str *ha; - - unregister_chrdev(major, "gdth"); - unregister_reboot_notifier(&gdth_notifier); - -#ifdef GDTH_STATISTICS - del_timer_sync(&gdth_timer); -#endif - - pci_unregister_driver(&gdth_pci_driver); - - list_for_each_entry(ha, &gdth_instances, list) - gdth_remove_one(ha); -} - -module_init(gdth_init); -module_exit(gdth_exit); - -#ifndef MODULE -__setup("gdth=", option_setup); -#endif diff --git a/drivers/scsi/gdth.h b/drivers/scsi/gdth.h deleted file mode 100644 index 5a13d406d40e..000000000000 --- a/drivers/scsi/gdth.h +++ /dev/null @@ -1,981 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _GDTH_H -#define _GDTH_H - -/* - * Header file for the GDT Disk Array/Storage RAID controllers driver for Linux - * - * gdth.h Copyright (C) 1995-06 ICP vortex, Achim Leubner - * See gdth.c for further informations and - * below for supported controller types - * - * <achim_leubner@adaptec.com> - * - * $Id: gdth.h,v 1.58 2006/01/11 16:14:09 achim Exp $ - */ - -#include <linux/types.h> - -#ifndef TRUE -#define TRUE 1 -#endif -#ifndef FALSE -#define FALSE 0 -#endif - -/* defines, macros */ - -/* driver version */ -#define GDTH_VERSION_STR "3.05" -#define GDTH_VERSION 3 -#define GDTH_SUBVERSION 5 - -/* protocol version */ -#define PROTOCOL_VERSION 1 - -/* OEM IDs */ -#define OEM_ID_ICP 0x941c -#define OEM_ID_INTEL 0x8000 - -/* controller classes */ -#define GDT_PCI 0x03 /* PCI controller */ -#define GDT_PCINEW 0x04 /* new PCI controller */ -#define GDT_PCIMPR 0x05 /* PCI MPR controller */ - -#ifndef PCI_DEVICE_ID_VORTEX_GDT60x0 -/* GDT_PCI */ -#define PCI_DEVICE_ID_VORTEX_GDT60x0 0 /* GDT6000/6020/6050 */ -#define PCI_DEVICE_ID_VORTEX_GDT6000B 1 /* GDT6000B/6010 */ -/* GDT_PCINEW */ -#define PCI_DEVICE_ID_VORTEX_GDT6x10 2 /* GDT6110/6510 */ -#define PCI_DEVICE_ID_VORTEX_GDT6x20 3 /* GDT6120/6520 */ -#define PCI_DEVICE_ID_VORTEX_GDT6530 4 /* GDT6530 */ -#define PCI_DEVICE_ID_VORTEX_GDT6550 5 /* GDT6550 */ -/* GDT_PCINEW, wide/ultra SCSI controllers */ -#define PCI_DEVICE_ID_VORTEX_GDT6x17 6 /* GDT6117/6517 */ -#define PCI_DEVICE_ID_VORTEX_GDT6x27 7 /* GDT6127/6527 */ -#define PCI_DEVICE_ID_VORTEX_GDT6537 8 /* GDT6537 */ -#define PCI_DEVICE_ID_VORTEX_GDT6557 9 /* GDT6557/6557-ECC */ -/* GDT_PCINEW, wide SCSI controllers */ -#define PCI_DEVICE_ID_VORTEX_GDT6x15 10 /* GDT6115/6515 */ -#define PCI_DEVICE_ID_VORTEX_GDT6x25 11 /* GDT6125/6525 */ -#define PCI_DEVICE_ID_VORTEX_GDT6535 12 /* GDT6535 */ -#define PCI_DEVICE_ID_VORTEX_GDT6555 13 /* GDT6555/6555-ECC */ -#endif - -#ifndef PCI_DEVICE_ID_VORTEX_GDT6x17RP -/* GDT_MPR, RP series, wide/ultra SCSI */ -#define PCI_DEVICE_ID_VORTEX_GDT6x17RP 0x100 /* GDT6117RP/GDT6517RP */ -#define PCI_DEVICE_ID_VORTEX_GDT6x27RP 0x101 /* GDT6127RP/GDT6527RP */ -#define PCI_DEVICE_ID_VORTEX_GDT6537RP 0x102 /* GDT6537RP */ -#define PCI_DEVICE_ID_VORTEX_GDT6557RP 0x103 /* GDT6557RP */ -/* GDT_MPR, RP series, narrow/ultra SCSI */ -#define PCI_DEVICE_ID_VORTEX_GDT6x11RP 0x104 /* GDT6111RP/GDT6511RP */ -#define PCI_DEVICE_ID_VORTEX_GDT6x21RP 0x105 /* GDT6121RP/GDT6521RP */ -#endif -#ifndef PCI_DEVICE_ID_VORTEX_GDT6x17RD -/* GDT_MPR, RD series, wide/ultra SCSI */ -#define PCI_DEVICE_ID_VORTEX_GDT6x17RD 0x110 /* GDT6117RD/GDT6517RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6x27RD 0x111 /* GDT6127RD/GDT6527RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6537RD 0x112 /* GDT6537RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6557RD 0x113 /* GDT6557RD */ -/* GDT_MPR, RD series, narrow/ultra SCSI */ -#define PCI_DEVICE_ID_VORTEX_GDT6x11RD 0x114 /* GDT6111RD/GDT6511RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6x21RD 0x115 /* GDT6121RD/GDT6521RD */ -/* GDT_MPR, RD series, wide/ultra2 SCSI */ -#define PCI_DEVICE_ID_VORTEX_GDT6x18RD 0x118 /* GDT6118RD/GDT6518RD/ - GDT6618RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6x28RD 0x119 /* GDT6128RD/GDT6528RD/ - GDT6628RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6x38RD 0x11A /* GDT6538RD/GDT6638RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6x58RD 0x11B /* GDT6558RD/GDT6658RD */ -/* GDT_MPR, RN series (64-bit PCI), wide/ultra2 SCSI */ -#define PCI_DEVICE_ID_VORTEX_GDT7x18RN 0x168 /* GDT7118RN/GDT7518RN/ - GDT7618RN */ -#define PCI_DEVICE_ID_VORTEX_GDT7x28RN 0x169 /* GDT7128RN/GDT7528RN/ - GDT7628RN */ -#define PCI_DEVICE_ID_VORTEX_GDT7x38RN 0x16A /* GDT7538RN/GDT7638RN */ -#define PCI_DEVICE_ID_VORTEX_GDT7x58RN 0x16B /* GDT7558RN/GDT7658RN */ -#endif - -#ifndef PCI_DEVICE_ID_VORTEX_GDT6x19RD -/* GDT_MPR, RD series, Fibre Channel */ -#define PCI_DEVICE_ID_VORTEX_GDT6x19RD 0x210 /* GDT6519RD/GDT6619RD */ -#define PCI_DEVICE_ID_VORTEX_GDT6x29RD 0x211 /* GDT6529RD/GDT6629RD */ -/* GDT_MPR, RN series (64-bit PCI), Fibre Channel */ -#define PCI_DEVICE_ID_VORTEX_GDT7x19RN 0x260 /* GDT7519RN/GDT7619RN */ -#define PCI_DEVICE_ID_VORTEX_GDT7x29RN 0x261 /* GDT7529RN/GDT7629RN */ -#endif - -#ifndef PCI_DEVICE_ID_VORTEX_GDTMAXRP -/* GDT_MPR, last device ID */ -#define PCI_DEVICE_ID_VORTEX_GDTMAXRP 0x2ff -#endif - -#ifndef PCI_DEVICE_ID_VORTEX_GDTNEWRX -/* new GDT Rx Controller */ -#define PCI_DEVICE_ID_VORTEX_GDTNEWRX 0x300 -#endif - -#ifndef PCI_DEVICE_ID_VORTEX_GDTNEWRX2 -/* new(2) GDT Rx Controller */ -#define PCI_DEVICE_ID_VORTEX_GDTNEWRX2 0x301 -#endif - -#ifndef PCI_DEVICE_ID_INTEL_SRC -/* Intel Storage RAID Controller */ -#define PCI_DEVICE_ID_INTEL_SRC 0x600 -#endif - -#ifndef PCI_DEVICE_ID_INTEL_SRC_XSCALE -/* Intel Storage RAID Controller */ -#define PCI_DEVICE_ID_INTEL_SRC_XSCALE 0x601 -#endif - -/* limits */ -#define GDTH_SCRATCH PAGE_SIZE /* 4KB scratch buffer */ -#define GDTH_MAXCMDS 120 -#define GDTH_MAXC_P_L 16 /* max. cmds per lun */ -#define GDTH_MAX_RAW 2 /* max. cmds per raw device */ -#define MAXOFFSETS 128 -#define MAXHA 16 -#define MAXID 127 -#define MAXLUN 8 -#define MAXBUS 6 -#define MAX_EVENTS 100 /* event buffer count */ -#define MAX_RES_ARGS 40 /* device reservation, - must be a multiple of 4 */ -#define MAXCYLS 1024 -#define HEADS 64 -#define SECS 32 /* mapping 64*32 */ -#define MEDHEADS 127 -#define MEDSECS 63 /* mapping 127*63 */ -#define BIGHEADS 255 -#define BIGSECS 63 /* mapping 255*63 */ - -/* special command ptr. */ -#define UNUSED_CMND ((struct scsi_cmnd *)-1) -#define INTERNAL_CMND ((struct scsi_cmnd *)-2) -#define SCREEN_CMND ((struct scsi_cmnd *)-3) -#define SPECIAL_SCP(p) (p==UNUSED_CMND || p==INTERNAL_CMND || p==SCREEN_CMND) - -/* controller services */ -#define SCSIRAWSERVICE 3 -#define CACHESERVICE 9 -#define SCREENSERVICE 11 - -/* screenservice defines */ -#define MSG_INV_HANDLE -1 /* special message handle */ -#define MSGLEN 16 /* size of message text */ -#define MSG_SIZE 34 /* size of message structure */ -#define MSG_REQUEST 0 /* async. event: message */ - -/* DPMEM constants */ -#define DPMEM_MAGIC 0xC0FFEE11 -#define IC_HEADER_BYTES 48 -#define IC_QUEUE_BYTES 4 -#define DPMEM_COMMAND_OFFSET IC_HEADER_BYTES+IC_QUEUE_BYTES*MAXOFFSETS - -/* cluster_type constants */ -#define CLUSTER_DRIVE 1 -#define CLUSTER_MOUNTED 2 -#define CLUSTER_RESERVED 4 -#define CLUSTER_RESERVE_STATE (CLUSTER_DRIVE|CLUSTER_MOUNTED|CLUSTER_RESERVED) - -/* commands for all services, cache service */ -#define GDT_INIT 0 /* service initialization */ -#define GDT_READ 1 /* read command */ -#define GDT_WRITE 2 /* write command */ -#define GDT_INFO 3 /* information about devices */ -#define GDT_FLUSH 4 /* flush dirty cache buffers */ -#define GDT_IOCTL 5 /* ioctl command */ -#define GDT_DEVTYPE 9 /* additional information */ -#define GDT_MOUNT 10 /* mount cache device */ -#define GDT_UNMOUNT 11 /* unmount cache device */ -#define GDT_SET_FEAT 12 /* set feat. (scatter/gather) */ -#define GDT_GET_FEAT 13 /* get features */ -#define GDT_WRITE_THR 16 /* write through */ -#define GDT_READ_THR 17 /* read through */ -#define GDT_EXT_INFO 18 /* extended info */ -#define GDT_RESET 19 /* controller reset */ -#define GDT_RESERVE_DRV 20 /* reserve host drive */ -#define GDT_RELEASE_DRV 21 /* release host drive */ -#define GDT_CLUST_INFO 22 /* cluster info */ -#define GDT_RW_ATTRIBS 23 /* R/W attribs (write thru,..)*/ -#define GDT_CLUST_RESET 24 /* releases the cluster drives*/ -#define GDT_FREEZE_IO 25 /* freezes all IOs */ -#define GDT_UNFREEZE_IO 26 /* unfreezes all IOs */ -#define GDT_X_INIT_HOST 29 /* ext. init: 64 bit support */ -#define GDT_X_INFO 30 /* ext. info for drives>2TB */ - -/* raw service commands */ -#define GDT_RESERVE 14 /* reserve dev. to raw serv. */ -#define GDT_RELEASE 15 /* release device */ -#define GDT_RESERVE_ALL 16 /* reserve all devices */ -#define GDT_RELEASE_ALL 17 /* release all devices */ -#define GDT_RESET_BUS 18 /* reset bus */ -#define GDT_SCAN_START 19 /* start device scan */ -#define GDT_SCAN_END 20 /* stop device scan */ -#define GDT_X_INIT_RAW 21 /* ext. init: 64 bit support */ - -/* screen service commands */ -#define GDT_REALTIME 3 /* realtime clock to screens. */ -#define GDT_X_INIT_SCR 4 /* ext. init: 64 bit support */ - -/* IOCTL command defines */ -#define SCSI_DR_INFO 0x00 /* SCSI drive info */ -#define SCSI_CHAN_CNT 0x05 /* SCSI channel count */ -#define SCSI_DR_LIST 0x06 /* SCSI drive list */ -#define SCSI_DEF_CNT 0x15 /* grown/primary defects */ -#define DSK_STATISTICS 0x4b /* SCSI disk statistics */ -#define IOCHAN_DESC 0x5d /* description of IO channel */ -#define IOCHAN_RAW_DESC 0x5e /* description of raw IO chn. */ -#define L_CTRL_PATTERN 0x20000000L /* SCSI IOCTL mask */ -#define ARRAY_INFO 0x12 /* array drive info */ -#define ARRAY_DRV_LIST 0x0f /* array drive list */ -#define ARRAY_DRV_LIST2 0x34 /* array drive list (new) */ -#define LA_CTRL_PATTERN 0x10000000L /* array IOCTL mask */ -#define CACHE_DRV_CNT 0x01 /* cache drive count */ -#define CACHE_DRV_LIST 0x02 /* cache drive list */ -#define CACHE_INFO 0x04 /* cache info */ -#define CACHE_CONFIG 0x05 /* cache configuration */ -#define CACHE_DRV_INFO 0x07 /* cache drive info */ -#define BOARD_FEATURES 0x15 /* controller features */ -#define BOARD_INFO 0x28 /* controller info */ -#define SET_PERF_MODES 0x82 /* set mode (coalescing,..) */ -#define GET_PERF_MODES 0x83 /* get mode */ -#define CACHE_READ_OEM_STRING_RECORD 0x84 /* read OEM string record */ -#define HOST_GET 0x10001L /* get host drive list */ -#define IO_CHANNEL 0x00020000L /* default IO channel */ -#define INVALID_CHANNEL 0x0000ffffL /* invalid channel */ - -/* service errors */ -#define S_OK 1 /* no error */ -#define S_GENERR 6 /* general error */ -#define S_BSY 7 /* controller busy */ -#define S_CACHE_UNKNOWN 12 /* cache serv.: drive unknown */ -#define S_RAW_SCSI 12 /* raw serv.: target error */ -#define S_RAW_ILL 0xff /* raw serv.: illegal */ -#define S_NOFUNC -2 /* unknown function */ -#define S_CACHE_RESERV -24 /* cache: reserv. conflict */ - -/* timeout values */ -#define INIT_RETRIES 100000 /* 100000 * 1ms = 100s */ -#define INIT_TIMEOUT 100000 /* 100000 * 1ms = 100s */ -#define POLL_TIMEOUT 10000 /* 10000 * 1ms = 10s */ - -/* priorities */ -#define DEFAULT_PRI 0x20 -#define IOCTL_PRI 0x10 -#define HIGH_PRI 0x08 - -/* data directions */ -#define GDTH_DATA_IN 0x01000000L /* data from target */ -#define GDTH_DATA_OUT 0x00000000L /* data to target */ - -/* other defines */ -#define LINUX_OS 8 /* used for cache optim. */ -#define SECS32 0x1f /* round capacity */ -#define BIOS_ID_OFFS 0x10 /* offset contr-ID in ISABIOS */ -#define LOCALBOARD 0 /* board node always 0 */ -#define ASYNCINDEX 0 /* cmd index async. event */ -#define SPEZINDEX 1 /* cmd index unknown service */ -#define COALINDEX (GDTH_MAXCMDS + 2) - -/* features */ -#define SCATTER_GATHER 1 /* s/g feature */ -#define GDT_WR_THROUGH 0x100 /* WRITE_THROUGH supported */ -#define GDT_64BIT 0x200 /* 64bit / drv>2TB support */ - -#include "gdth_ioctl.h" - -/* screenservice message */ -typedef struct { - u32 msg_handle; /* message handle */ - u32 msg_len; /* size of message */ - u32 msg_alen; /* answer length */ - u8 msg_answer; /* answer flag */ - u8 msg_ext; /* more messages */ - u8 msg_reserved[2]; - char msg_text[MSGLEN+2]; /* the message text */ -} __attribute__((packed)) gdth_msg_str; - - -/* IOCTL data structures */ - -/* Status coalescing buffer for returning multiple requests per interrupt */ -typedef struct { - u32 status; - u32 ext_status; - u32 info0; - u32 info1; -} __attribute__((packed)) gdth_coal_status; - -/* performance mode data structure */ -typedef struct { - u32 version; /* The version of this IOCTL structure. */ - u32 st_mode; /* 0=dis., 1=st_buf_addr1 valid, 2=both */ - u32 st_buff_addr1; /* physical address of status buffer 1 */ - u32 st_buff_u_addr1; /* reserved for 64 bit addressing */ - u32 st_buff_indx1; /* reserved command idx. for this buffer */ - u32 st_buff_addr2; /* physical address of status buffer 1 */ - u32 st_buff_u_addr2; /* reserved for 64 bit addressing */ - u32 st_buff_indx2; /* reserved command idx. for this buffer */ - u32 st_buff_size; /* size of each buffer in bytes */ - u32 cmd_mode; /* 0 = mode disabled, 1 = cmd_buff_addr1 */ - u32 cmd_buff_addr1; /* physical address of cmd buffer 1 */ - u32 cmd_buff_u_addr1; /* reserved for 64 bit addressing */ - u32 cmd_buff_indx1; /* cmd buf addr1 unique identifier */ - u32 cmd_buff_addr2; /* physical address of cmd buffer 1 */ - u32 cmd_buff_u_addr2; /* reserved for 64 bit addressing */ - u32 cmd_buff_indx2; /* cmd buf addr1 unique identifier */ - u32 cmd_buff_size; /* size of each cmd buffer in bytes */ - u32 reserved1; - u32 reserved2; -} __attribute__((packed)) gdth_perf_modes; - -/* SCSI drive info */ -typedef struct { - u8 vendor[8]; /* vendor string */ - u8 product[16]; /* product string */ - u8 revision[4]; /* revision */ - u32 sy_rate; /* current rate for sync. tr. */ - u32 sy_max_rate; /* max. rate for sync. tr. */ - u32 no_ldrive; /* belongs to this log. drv.*/ - u32 blkcnt; /* number of blocks */ - u16 blksize; /* size of block in bytes */ - u8 available; /* flag: access is available */ - u8 init; /* medium is initialized */ - u8 devtype; /* SCSI devicetype */ - u8 rm_medium; /* medium is removable */ - u8 wp_medium; /* medium is write protected */ - u8 ansi; /* SCSI I/II or III? */ - u8 protocol; /* same as ansi */ - u8 sync; /* flag: sync. transfer enab. */ - u8 disc; /* flag: disconnect enabled */ - u8 queueing; /* flag: command queing enab. */ - u8 cached; /* flag: caching enabled */ - u8 target_id; /* target ID of device */ - u8 lun; /* LUN id of device */ - u8 orphan; /* flag: drive fragment */ - u32 last_error; /* sense key or drive state */ - u32 last_result; /* result of last command */ - u32 check_errors; /* err. in last surface check */ - u8 percent; /* progress for surface check */ - u8 last_check; /* IOCTRL operation */ - u8 res[2]; - u32 flags; /* from 1.19/2.19: raw reserv.*/ - u8 multi_bus; /* multi bus dev? (fibre ch.) */ - u8 mb_status; /* status: available? */ - u8 res2[2]; - u8 mb_alt_status; /* status on second bus */ - u8 mb_alt_bid; /* number of second bus */ - u8 mb_alt_tid; /* target id on second bus */ - u8 res3; - u8 fc_flag; /* from 1.22/2.22: info valid?*/ - u8 res4; - u16 fc_frame_size; /* frame size (bytes) */ - char wwn[8]; /* world wide name */ -} __attribute__((packed)) gdth_diskinfo_str; - -/* get SCSI channel count */ -typedef struct { - u32 channel_no; /* number of channel */ - u32 drive_cnt; /* drive count */ - u8 siop_id; /* SCSI processor ID */ - u8 siop_state; /* SCSI processor state */ -} __attribute__((packed)) gdth_getch_str; - -/* get SCSI drive numbers */ -typedef struct { - u32 sc_no; /* SCSI channel */ - u32 sc_cnt; /* sc_list[] elements */ - u32 sc_list[MAXID]; /* minor device numbers */ -} __attribute__((packed)) gdth_drlist_str; - -/* get grown/primary defect count */ -typedef struct { - u8 sddc_type; /* 0x08: grown, 0x10: prim. */ - u8 sddc_format; /* list entry format */ - u8 sddc_len; /* list entry length */ - u8 sddc_res; - u32 sddc_cnt; /* entry count */ -} __attribute__((packed)) gdth_defcnt_str; - -/* disk statistics */ -typedef struct { - u32 bid; /* SCSI channel */ - u32 first; /* first SCSI disk */ - u32 entries; /* number of elements */ - u32 count; /* (R) number of init. el. */ - u32 mon_time; /* time stamp */ - struct { - u8 tid; /* target ID */ - u8 lun; /* LUN */ - u8 res[2]; - u32 blk_size; /* block size in bytes */ - u32 rd_count; /* bytes read */ - u32 wr_count; /* bytes written */ - u32 rd_blk_count; /* blocks read */ - u32 wr_blk_count; /* blocks written */ - u32 retries; /* retries */ - u32 reassigns; /* reassigns */ - } __attribute__((packed)) list[1]; -} __attribute__((packed)) gdth_dskstat_str; - -/* IO channel header */ -typedef struct { - u32 version; /* version (-1UL: newest) */ - u8 list_entries; /* list entry count */ - u8 first_chan; /* first channel number */ - u8 last_chan; /* last channel number */ - u8 chan_count; /* (R) channel count */ - u32 list_offset; /* offset of list[0] */ -} __attribute__((packed)) gdth_iochan_header; - -/* get IO channel description */ -typedef struct { - gdth_iochan_header hdr; - struct { - u32 address; /* channel address */ - u8 type; /* type (SCSI, FCAL) */ - u8 local_no; /* local number */ - u16 features; /* channel features */ - } __attribute__((packed)) list[MAXBUS]; -} __attribute__((packed)) gdth_iochan_str; - -/* get raw IO channel description */ -typedef struct { - gdth_iochan_header hdr; - struct { - u8 proc_id; /* processor id */ - u8 proc_defect; /* defect ? */ - u8 reserved[2]; - } __attribute__((packed)) list[MAXBUS]; -} __attribute__((packed)) gdth_raw_iochan_str; - -/* array drive component */ -typedef struct { - u32 al_controller; /* controller ID */ - u8 al_cache_drive; /* cache drive number */ - u8 al_status; /* cache drive state */ - u8 al_res[2]; -} __attribute__((packed)) gdth_arraycomp_str; - -/* array drive information */ -typedef struct { - u8 ai_type; /* array type (RAID0,4,5) */ - u8 ai_cache_drive_cnt; /* active cachedrives */ - u8 ai_state; /* array drive state */ - u8 ai_master_cd; /* master cachedrive */ - u32 ai_master_controller; /* ID of master controller */ - u32 ai_size; /* user capacity [sectors] */ - u32 ai_striping_size; /* striping size [sectors] */ - u32 ai_secsize; /* sector size [bytes] */ - u32 ai_err_info; /* failed cache drive */ - u8 ai_name[8]; /* name of the array drive */ - u8 ai_controller_cnt; /* number of controllers */ - u8 ai_removable; /* flag: removable */ - u8 ai_write_protected; /* flag: write protected */ - u8 ai_devtype; /* type: always direct access */ - gdth_arraycomp_str ai_drives[35]; /* drive components: */ - u8 ai_drive_entries; /* number of drive components */ - u8 ai_protected; /* protection flag */ - u8 ai_verify_state; /* state of a parity verify */ - u8 ai_ext_state; /* extended array drive state */ - u8 ai_expand_state; /* array expand state (>=2.18)*/ - u8 ai_reserved[3]; -} __attribute__((packed)) gdth_arrayinf_str; - -/* get array drive list */ -typedef struct { - u32 controller_no; /* controller no. */ - u8 cd_handle; /* master cachedrive */ - u8 is_arrayd; /* Flag: is array drive? */ - u8 is_master; /* Flag: is array master? */ - u8 is_parity; /* Flag: is parity drive? */ - u8 is_hotfix; /* Flag: is hotfix drive? */ - u8 res[3]; -} __attribute__((packed)) gdth_alist_str; - -typedef struct { - u32 entries_avail; /* allocated entries */ - u32 entries_init; /* returned entries */ - u32 first_entry; /* first entry number */ - u32 list_offset; /* offset of following list */ - gdth_alist_str list[1]; /* list */ -} __attribute__((packed)) gdth_arcdl_str; - -/* cache info/config IOCTL */ -typedef struct { - u32 version; /* firmware version */ - u16 state; /* cache state (on/off) */ - u16 strategy; /* cache strategy */ - u16 write_back; /* write back state (on/off) */ - u16 block_size; /* cache block size */ -} __attribute__((packed)) gdth_cpar_str; - -typedef struct { - u32 csize; /* cache size */ - u32 read_cnt; /* read/write counter */ - u32 write_cnt; - u32 tr_hits; /* hits */ - u32 sec_hits; - u32 sec_miss; /* misses */ -} __attribute__((packed)) gdth_cstat_str; - -typedef struct { - gdth_cpar_str cpar; - gdth_cstat_str cstat; -} __attribute__((packed)) gdth_cinfo_str; - -/* cache drive info */ -typedef struct { - u8 cd_name[8]; /* cache drive name */ - u32 cd_devtype; /* SCSI devicetype */ - u32 cd_ldcnt; /* number of log. drives */ - u32 cd_last_error; /* last error */ - u8 cd_initialized; /* drive is initialized */ - u8 cd_removable; /* media is removable */ - u8 cd_write_protected; /* write protected */ - u8 cd_flags; /* Pool Hot Fix? */ - u32 ld_blkcnt; /* number of blocks */ - u32 ld_blksize; /* blocksize */ - u32 ld_dcnt; /* number of disks */ - u32 ld_slave; /* log. drive index */ - u32 ld_dtype; /* type of logical drive */ - u32 ld_last_error; /* last error */ - u8 ld_name[8]; /* log. drive name */ - u8 ld_error; /* error */ -} __attribute__((packed)) gdth_cdrinfo_str; - -/* OEM string */ -typedef struct { - u32 ctl_version; - u32 file_major_version; - u32 file_minor_version; - u32 buffer_size; - u32 cpy_count; - u32 ext_error; - u32 oem_id; - u32 board_id; -} __attribute__((packed)) gdth_oem_str_params; - -typedef struct { - u8 product_0_1_name[16]; - u8 product_4_5_name[16]; - u8 product_cluster_name[16]; - u8 product_reserved[16]; - u8 scsi_cluster_target_vendor_id[16]; - u8 cluster_raid_fw_name[16]; - u8 oem_brand_name[16]; - u8 oem_raid_type[16]; - u8 bios_type[13]; - u8 bios_title[50]; - u8 oem_company_name[37]; - u32 pci_id_1; - u32 pci_id_2; - u8 validation_status[80]; - u8 reserved_1[4]; - u8 scsi_host_drive_inquiry_vendor_id[16]; - u8 library_file_template[16]; - u8 reserved_2[16]; - u8 tool_name_1[32]; - u8 tool_name_2[32]; - u8 tool_name_3[32]; - u8 oem_contact_1[84]; - u8 oem_contact_2[84]; - u8 oem_contact_3[84]; -} __attribute__((packed)) gdth_oem_str; - -typedef struct { - gdth_oem_str_params params; - gdth_oem_str text; -} __attribute__((packed)) gdth_oem_str_ioctl; - -/* board features */ -typedef struct { - u8 chaining; /* Chaining supported */ - u8 striping; /* Striping (RAID-0) supp. */ - u8 mirroring; /* Mirroring (RAID-1) supp. */ - u8 raid; /* RAID-4/5/10 supported */ -} __attribute__((packed)) gdth_bfeat_str; - -/* board info IOCTL */ -typedef struct { - u32 ser_no; /* serial no. */ - u8 oem_id[2]; /* OEM ID */ - u16 ep_flags; /* eprom flags */ - u32 proc_id; /* processor ID */ - u32 memsize; /* memory size (bytes) */ - u8 mem_banks; /* memory banks */ - u8 chan_type; /* channel type */ - u8 chan_count; /* channel count */ - u8 rdongle_pres; /* dongle present? */ - u32 epr_fw_ver; /* (eprom) firmware version */ - u32 upd_fw_ver; /* (update) firmware version */ - u32 upd_revision; /* update revision */ - char type_string[16]; /* controller name */ - char raid_string[16]; /* RAID firmware name */ - u8 update_pres; /* update present? */ - u8 xor_pres; /* XOR engine present? */ - u8 prom_type; /* ROM type (eprom/flash) */ - u8 prom_count; /* number of ROM devices */ - u32 dup_pres; /* duplexing module present? */ - u32 chan_pres; /* number of expansion chn. */ - u32 mem_pres; /* memory expansion inst. ? */ - u8 ft_bus_system; /* fault bus supported? */ - u8 subtype_valid; /* board_subtype valid? */ - u8 board_subtype; /* subtype/hardware level */ - u8 ramparity_pres; /* RAM parity check hardware? */ -} __attribute__((packed)) gdth_binfo_str; - -/* get host drive info */ -typedef struct { - char name[8]; /* host drive name */ - u32 size; /* size (sectors) */ - u8 host_drive; /* host drive number */ - u8 log_drive; /* log. drive (master) */ - u8 reserved; - u8 rw_attribs; /* r/w attribs */ - u32 start_sec; /* start sector */ -} __attribute__((packed)) gdth_hentry_str; - -typedef struct { - u32 entries; /* entry count */ - u32 offset; /* offset of entries */ - u8 secs_p_head; /* sectors/head */ - u8 heads_p_cyl; /* heads/cylinder */ - u8 reserved; - u8 clust_drvtype; /* cluster drive type */ - u32 location; /* controller number */ - gdth_hentry_str entry[MAX_HDRIVES]; /* entries */ -} __attribute__((packed)) gdth_hget_str; - - -/* DPRAM structures */ - -/* interface area ISA/PCI */ -typedef struct { - u8 S_Cmd_Indx; /* special command */ - u8 volatile S_Status; /* status special command */ - u16 reserved1; - u32 S_Info[4]; /* add. info special command */ - u8 volatile Sema0; /* command semaphore */ - u8 reserved2[3]; - u8 Cmd_Index; /* command number */ - u8 reserved3[3]; - u16 volatile Status; /* command status */ - u16 Service; /* service(for async.events) */ - u32 Info[2]; /* additional info */ - struct { - u16 offset; /* command offs. in the DPRAM*/ - u16 serv_id; /* service */ - } __attribute__((packed)) comm_queue[MAXOFFSETS]; /* command queue */ - u32 bios_reserved[2]; - u8 gdt_dpr_cmd[1]; /* commands */ -} __attribute__((packed)) gdt_dpr_if; - -/* SRAM structure PCI controllers */ -typedef struct { - u32 magic; /* controller ID from BIOS */ - u16 need_deinit; /* switch betw. BIOS/driver */ - u8 switch_support; /* see need_deinit */ - u8 padding[9]; - u8 os_used[16]; /* OS code per service */ - u8 unused[28]; - u8 fw_magic; /* contr. ID from firmware */ -} __attribute__((packed)) gdt_pci_sram; - -/* DPRAM ISA controllers */ -typedef struct { - union { - struct { - u8 bios_used[0x3c00-32]; /* 15KB - 32Bytes BIOS */ - u16 need_deinit; /* switch betw. BIOS/driver */ - u8 switch_support; /* see need_deinit */ - u8 padding[9]; - u8 os_used[16]; /* OS code per service */ - } __attribute__((packed)) dp_sram; - u8 bios_area[0x4000]; /* 16KB reserved for BIOS */ - } bu; - union { - gdt_dpr_if ic; /* interface area */ - u8 if_area[0x3000]; /* 12KB for interface */ - } u; - struct { - u8 memlock; /* write protection DPRAM */ - u8 event; /* release event */ - u8 irqen; /* board interrupts enable */ - u8 irqdel; /* acknowledge board int. */ - u8 volatile Sema1; /* status semaphore */ - u8 rq; /* IRQ/DRQ configuration */ - } __attribute__((packed)) io; -} __attribute__((packed)) gdt2_dpram_str; - -/* DPRAM PCI controllers */ -typedef struct { - union { - gdt_dpr_if ic; /* interface area */ - u8 if_area[0xff0-sizeof(gdt_pci_sram)]; - } u; - gdt_pci_sram gdt6sr; /* SRAM structure */ - struct { - u8 unused0[1]; - u8 volatile Sema1; /* command semaphore */ - u8 unused1[3]; - u8 irqen; /* board interrupts enable */ - u8 unused2[2]; - u8 event; /* release event */ - u8 unused3[3]; - u8 irqdel; /* acknowledge board int. */ - u8 unused4[3]; - } __attribute__((packed)) io; -} __attribute__((packed)) gdt6_dpram_str; - -/* PLX register structure (new PCI controllers) */ -typedef struct { - u8 cfg_reg; /* DPRAM cfg.(2:below 1MB,0:anywhere)*/ - u8 unused1[0x3f]; - u8 volatile sema0_reg; /* command semaphore */ - u8 volatile sema1_reg; /* status semaphore */ - u8 unused2[2]; - u16 volatile status; /* command status */ - u16 service; /* service */ - u32 info[2]; /* additional info */ - u8 unused3[0x10]; - u8 ldoor_reg; /* PCI to local doorbell */ - u8 unused4[3]; - u8 volatile edoor_reg; /* local to PCI doorbell */ - u8 unused5[3]; - u8 control0; /* control0 register(unused) */ - u8 control1; /* board interrupts enable */ - u8 unused6[0x16]; -} __attribute__((packed)) gdt6c_plx_regs; - -/* DPRAM new PCI controllers */ -typedef struct { - union { - gdt_dpr_if ic; /* interface area */ - u8 if_area[0x4000-sizeof(gdt_pci_sram)]; - } u; - gdt_pci_sram gdt6sr; /* SRAM structure */ -} __attribute__((packed)) gdt6c_dpram_str; - -/* i960 register structure (PCI MPR controllers) */ -typedef struct { - u8 unused1[16]; - u8 volatile sema0_reg; /* command semaphore */ - u8 unused2; - u8 volatile sema1_reg; /* status semaphore */ - u8 unused3; - u16 volatile status; /* command status */ - u16 service; /* service */ - u32 info[2]; /* additional info */ - u8 ldoor_reg; /* PCI to local doorbell */ - u8 unused4[11]; - u8 volatile edoor_reg; /* local to PCI doorbell */ - u8 unused5[7]; - u8 edoor_en_reg; /* board interrupts enable */ - u8 unused6[27]; - u32 unused7[939]; - u32 severity; - char evt_str[256]; /* event string */ -} __attribute__((packed)) gdt6m_i960_regs; - -/* DPRAM PCI MPR controllers */ -typedef struct { - gdt6m_i960_regs i960r; /* 4KB i960 registers */ - union { - gdt_dpr_if ic; /* interface area */ - u8 if_area[0x3000-sizeof(gdt_pci_sram)]; - } u; - gdt_pci_sram gdt6sr; /* SRAM structure */ -} __attribute__((packed)) gdt6m_dpram_str; - - -/* PCI resources */ -typedef struct { - struct pci_dev *pdev; - unsigned long dpmem; /* DPRAM address */ - unsigned long io; /* IO address */ -} gdth_pci_str; - - -/* controller information structure */ -typedef struct { - struct Scsi_Host *shost; - struct list_head list; - u16 hanum; - u16 oem_id; /* OEM */ - u16 type; /* controller class */ - u32 stype; /* subtype (PCI: device ID) */ - u16 fw_vers; /* firmware version */ - u16 cache_feat; /* feat. cache serv. (s/g,..)*/ - u16 raw_feat; /* feat. raw service (s/g,..)*/ - u16 screen_feat; /* feat. raw service (s/g,..)*/ - void __iomem *brd; /* DPRAM address */ - u32 brd_phys; /* slot number/BIOS address */ - gdt6c_plx_regs *plx; /* PLX regs (new PCI contr.) */ - gdth_cmd_str cmdext; - gdth_cmd_str *pccb; /* address command structure */ - u32 ccb_phys; /* phys. address */ -#ifdef INT_COAL - gdth_coal_status *coal_stat; /* buffer for coalescing int.*/ - u64 coal_stat_phys; /* phys. address */ -#endif - char *pscratch; /* scratch (DMA) buffer */ - u64 scratch_phys; /* phys. address */ - u8 scratch_busy; /* in use? */ - u8 dma64_support; /* 64-bit DMA supported? */ - gdth_msg_str *pmsg; /* message buffer */ - u64 msg_phys; /* phys. address */ - u8 scan_mode; /* current scan mode */ - u8 irq; /* IRQ */ - u8 drq; /* DRQ (ISA controllers) */ - u16 status; /* command status */ - u16 service; /* service/firmware ver./.. */ - u32 info; - u32 info2; /* additional info */ - struct scsi_cmnd *req_first; /* top of request queue */ - struct { - u8 present; /* Flag: host drive present? */ - u8 is_logdrv; /* Flag: log. drive (master)? */ - u8 is_arraydrv; /* Flag: array drive? */ - u8 is_master; /* Flag: array drive master? */ - u8 is_parity; /* Flag: parity drive? */ - u8 is_hotfix; /* Flag: hotfix drive? */ - u8 master_no; /* number of master drive */ - u8 lock; /* drive locked? (hot plug) */ - u8 heads; /* mapping */ - u8 secs; - u16 devtype; /* further information */ - u64 size; /* capacity */ - u8 ldr_no; /* log. drive no. */ - u8 rw_attribs; /* r/w attributes */ - u8 cluster_type; /* cluster properties */ - u8 media_changed; /* Flag:MOUNT/UNMOUNT occurred */ - u32 start_sec; /* start sector */ - } hdr[MAX_LDRIVES]; /* host drives */ - struct { - u8 lock; /* channel locked? (hot plug) */ - u8 pdev_cnt; /* physical device count */ - u8 local_no; /* local channel number */ - u8 io_cnt[MAXID]; /* current IO count */ - u32 address; /* channel address */ - u32 id_list[MAXID]; /* IDs of the phys. devices */ - } raw[MAXBUS]; /* SCSI channels */ - struct { - struct scsi_cmnd *cmnd; /* pending request */ - u16 service; /* service */ - } cmd_tab[GDTH_MAXCMDS]; /* table of pend. requests */ - struct gdth_cmndinfo { /* per-command private info */ - int index; - int internal_command; /* don't call scsi_done */ - gdth_cmd_str *internal_cmd_str; /* crier for internal messages*/ - dma_addr_t sense_paddr; /* sense dma-addr */ - u8 priority; - int timeout_count; /* # of timeout calls */ - volatile int wait_for_completion; - u16 status; - u32 info; - enum dma_data_direction dma_dir; - int phase; /* ???? */ - int OpCode; - } cmndinfo[GDTH_MAXCMDS]; /* index==0 is free */ - u8 bus_cnt; /* SCSI bus count */ - u8 tid_cnt; /* Target ID count */ - u8 bus_id[MAXBUS]; /* IOP IDs */ - u8 virt_bus; /* number of virtual bus */ - u8 more_proc; /* more /proc info supported */ - u16 cmd_cnt; /* command count in DPRAM */ - u16 cmd_len; /* length of actual command */ - u16 cmd_offs_dpmem; /* actual offset in DPRAM */ - u16 ic_all_size; /* sizeof DPRAM interf. area */ - gdth_cpar_str cpar; /* controller cache par. */ - gdth_bfeat_str bfeat; /* controller features */ - gdth_binfo_str binfo; /* controller info */ - gdth_evt_data dvr; /* event structure */ - spinlock_t smp_lock; - struct pci_dev *pdev; - char oem_name[8]; -#ifdef GDTH_DMA_STATISTICS - unsigned long dma32_cnt, dma64_cnt; /* statistics: DMA buffer */ -#endif - struct scsi_device *sdev; -} gdth_ha_str; - -static inline struct gdth_cmndinfo *gdth_cmnd_priv(struct scsi_cmnd* cmd) -{ - return (struct gdth_cmndinfo *)cmd->host_scribble; -} - -/* INQUIRY data format */ -typedef struct { - u8 type_qual; - u8 modif_rmb; - u8 version; - u8 resp_aenc; - u8 add_length; - u8 reserved1; - u8 reserved2; - u8 misc; - u8 vendor[8]; - u8 product[16]; - u8 revision[4]; -} __attribute__((packed)) gdth_inq_data; - -/* READ_CAPACITY data format */ -typedef struct { - u32 last_block_no; - u32 block_length; -} __attribute__((packed)) gdth_rdcap_data; - -/* READ_CAPACITY (16) data format */ -typedef struct { - u64 last_block_no; - u32 block_length; -} __attribute__((packed)) gdth_rdcap16_data; - -/* REQUEST_SENSE data format */ -typedef struct { - u8 errorcode; - u8 segno; - u8 key; - u32 info; - u8 add_length; - u32 cmd_info; - u8 adsc; - u8 adsq; - u8 fruc; - u8 key_spec[3]; -} __attribute__((packed)) gdth_sense_data; - -/* MODE_SENSE data format */ -typedef struct { - struct { - u8 data_length; - u8 med_type; - u8 dev_par; - u8 bd_length; - } __attribute__((packed)) hd; - struct { - u8 dens_code; - u8 block_count[3]; - u8 reserved; - u8 block_length[3]; - } __attribute__((packed)) bd; -} __attribute__((packed)) gdth_modep_data; - -/* stack frame */ -typedef struct { - unsigned long b[10]; /* 32/64 bit compiler ! */ -} __attribute__((packed)) gdth_stackframe; - - -/* function prototyping */ - -int gdth_show_info(struct seq_file *, struct Scsi_Host *); -int gdth_set_info(struct Scsi_Host *, char *, int); - -#endif diff --git a/drivers/scsi/gdth_ioctl.h b/drivers/scsi/gdth_ioctl.h deleted file mode 100644 index ee4c9bf1022a..000000000000 --- a/drivers/scsi/gdth_ioctl.h +++ /dev/null @@ -1,251 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _GDTH_IOCTL_H -#define _GDTH_IOCTL_H - -/* gdth_ioctl.h - * $Id: gdth_ioctl.h,v 1.14 2004/02/19 15:43:15 achim Exp $ - */ - -/* IOCTLs */ -#define GDTIOCTL_MASK ('J'<<8) -#define GDTIOCTL_GENERAL (GDTIOCTL_MASK | 0) /* general IOCTL */ -#define GDTIOCTL_DRVERS (GDTIOCTL_MASK | 1) /* get driver version */ -#define GDTIOCTL_CTRTYPE (GDTIOCTL_MASK | 2) /* get controller type */ -#define GDTIOCTL_OSVERS (GDTIOCTL_MASK | 3) /* get OS version */ -#define GDTIOCTL_HDRLIST (GDTIOCTL_MASK | 4) /* get host drive list */ -#define GDTIOCTL_CTRCNT (GDTIOCTL_MASK | 5) /* get controller count */ -#define GDTIOCTL_LOCKDRV (GDTIOCTL_MASK | 6) /* lock host drive */ -#define GDTIOCTL_LOCKCHN (GDTIOCTL_MASK | 7) /* lock channel */ -#define GDTIOCTL_EVENT (GDTIOCTL_MASK | 8) /* read controller events */ -#define GDTIOCTL_SCSI (GDTIOCTL_MASK | 9) /* SCSI command */ -#define GDTIOCTL_RESET_BUS (GDTIOCTL_MASK |10) /* reset SCSI bus */ -#define GDTIOCTL_RESCAN (GDTIOCTL_MASK |11) /* rescan host drives */ -#define GDTIOCTL_RESET_DRV (GDTIOCTL_MASK |12) /* reset (remote) drv. res. */ - -#define GDTIOCTL_MAGIC 0xaffe0004 -#define EVENT_SIZE 294 -#define GDTH_MAXSG 32 /* max. s/g elements */ - -#define MAX_LDRIVES 255 /* max. log. drive count */ -#define MAX_HDRIVES MAX_LDRIVES /* max. host drive count */ - -/* scatter/gather element */ -typedef struct { - u32 sg_ptr; /* address */ - u32 sg_len; /* length */ -} __attribute__((packed)) gdth_sg_str; - -/* scatter/gather element - 64bit addresses */ -typedef struct { - u64 sg_ptr; /* address */ - u32 sg_len; /* length */ -} __attribute__((packed)) gdth_sg64_str; - -/* command structure */ -typedef struct { - u32 BoardNode; /* board node (always 0) */ - u32 CommandIndex; /* command number */ - u16 OpCode; /* the command (READ,..) */ - union { - struct { - u16 DeviceNo; /* number of cache drive */ - u32 BlockNo; /* block number */ - u32 BlockCnt; /* block count */ - u32 DestAddr; /* dest. addr. (if s/g: -1) */ - u32 sg_canz; /* s/g element count */ - gdth_sg_str sg_lst[GDTH_MAXSG]; /* s/g list */ - } __attribute__((packed)) cache; /* cache service cmd. str. */ - struct { - u16 DeviceNo; /* number of cache drive */ - u64 BlockNo; /* block number */ - u32 BlockCnt; /* block count */ - u64 DestAddr; /* dest. addr. (if s/g: -1) */ - u32 sg_canz; /* s/g element count */ - gdth_sg64_str sg_lst[GDTH_MAXSG]; /* s/g list */ - } __attribute__((packed)) cache64; /* cache service cmd. str. */ - struct { - u16 param_size; /* size of p_param buffer */ - u32 subfunc; /* IOCTL function */ - u32 channel; /* device */ - u64 p_param; /* buffer */ - } __attribute__((packed)) ioctl; /* IOCTL command structure */ - struct { - u16 reserved; - union { - struct { - u32 msg_handle; /* message handle */ - u64 msg_addr; /* message buffer address */ - } __attribute__((packed)) msg; - u8 data[12]; /* buffer for rtc data, ... */ - } su; - } __attribute__((packed)) screen; /* screen service cmd. str. */ - struct { - u16 reserved; - u32 direction; /* data direction */ - u32 mdisc_time; /* disc. time (0: no timeout)*/ - u32 mcon_time; /* connect time(0: no to.) */ - u32 sdata; /* dest. addr. (if s/g: -1) */ - u32 sdlen; /* data length (bytes) */ - u32 clen; /* SCSI cmd. length(6,10,12) */ - u8 cmd[12]; /* SCSI command */ - u8 target; /* target ID */ - u8 lun; /* LUN */ - u8 bus; /* SCSI bus number */ - u8 priority; /* only 0 used */ - u32 sense_len; /* sense data length */ - u32 sense_data; /* sense data addr. */ - u32 link_p; /* linked cmds (not supp.) */ - u32 sg_ranz; /* s/g element count */ - gdth_sg_str sg_lst[GDTH_MAXSG]; /* s/g list */ - } __attribute__((packed)) raw; /* raw service cmd. struct. */ - struct { - u16 reserved; - u32 direction; /* data direction */ - u32 mdisc_time; /* disc. time (0: no timeout)*/ - u32 mcon_time; /* connect time(0: no to.) */ - u64 sdata; /* dest. addr. (if s/g: -1) */ - u32 sdlen; /* data length (bytes) */ - u32 clen; /* SCSI cmd. length(6,..,16) */ - u8 cmd[16]; /* SCSI command */ - u8 target; /* target ID */ - u8 lun; /* LUN */ - u8 bus; /* SCSI bus number */ - u8 priority; /* only 0 used */ - u32 sense_len; /* sense data length */ - u64 sense_data; /* sense data addr. */ - u32 sg_ranz; /* s/g element count */ - gdth_sg64_str sg_lst[GDTH_MAXSG]; /* s/g list */ - } __attribute__((packed)) raw64; /* raw service cmd. struct. */ - } u; - /* additional variables */ - u8 Service; /* controller service */ - u8 reserved; - u16 Status; /* command result */ - u32 Info; /* additional information */ - void *RequestBuffer; /* request buffer */ -} __attribute__((packed)) gdth_cmd_str; - -/* controller event structure */ -#define ES_ASYNC 1 -#define ES_DRIVER 2 -#define ES_TEST 3 -#define ES_SYNC 4 -typedef struct { - u16 size; /* size of structure */ - union { - char stream[16]; - struct { - u16 ionode; - u16 service; - u32 index; - } __attribute__((packed)) driver; - struct { - u16 ionode; - u16 service; - u16 status; - u32 info; - u8 scsi_coord[3]; - } __attribute__((packed)) async; - struct { - u16 ionode; - u16 service; - u16 status; - u32 info; - u16 hostdrive; - u8 scsi_coord[3]; - u8 sense_key; - } __attribute__((packed)) sync; - struct { - u32 l1, l2, l3, l4; - } __attribute__((packed)) test; - } eu; - u32 severity; - u8 event_string[256]; -} __attribute__((packed)) gdth_evt_data; - -typedef struct { - u32 first_stamp; - u32 last_stamp; - u16 same_count; - u16 event_source; - u16 event_idx; - u8 application; - u8 reserved; - gdth_evt_data event_data; -} __attribute__((packed)) gdth_evt_str; - -/* GDTIOCTL_GENERAL */ -typedef struct { - u16 ionode; /* controller number */ - u16 timeout; /* timeout */ - u32 info; /* error info */ - u16 status; /* status */ - unsigned long data_len; /* data buffer size */ - unsigned long sense_len; /* sense buffer size */ - gdth_cmd_str command; /* command */ -} gdth_ioctl_general; - -/* GDTIOCTL_LOCKDRV */ -typedef struct { - u16 ionode; /* controller number */ - u8 lock; /* lock/unlock */ - u8 drive_cnt; /* drive count */ - u16 drives[MAX_HDRIVES]; /* drives */ -} gdth_ioctl_lockdrv; - -/* GDTIOCTL_LOCKCHN */ -typedef struct { - u16 ionode; /* controller number */ - u8 lock; /* lock/unlock */ - u8 channel; /* channel */ -} gdth_ioctl_lockchn; - -/* GDTIOCTL_OSVERS */ -typedef struct { - u8 version; /* OS version */ - u8 subversion; /* OS subversion */ - u16 revision; /* revision */ -} gdth_ioctl_osvers; - -/* GDTIOCTL_CTRTYPE */ -typedef struct { - u16 ionode; /* controller number */ - u8 type; /* controller type */ - u16 info; /* slot etc. */ - u16 oem_id; /* OEM ID */ - u16 bios_ver; /* not used */ - u16 access; /* not used */ - u16 ext_type; /* extended type */ - u16 device_id; /* device ID */ - u16 sub_device_id; /* sub device ID */ -} gdth_ioctl_ctrtype; - -/* GDTIOCTL_EVENT */ -typedef struct { - u16 ionode; - int erase; /* erase event? */ - int handle; /* event handle */ - gdth_evt_str event; -} gdth_ioctl_event; - -/* GDTIOCTL_RESCAN/GDTIOCTL_HDRLIST */ -typedef struct { - u16 ionode; /* controller number */ - u8 flag; /* add/remove */ - u16 hdr_no; /* drive no. */ - struct { - u8 bus; /* SCSI bus */ - u8 target; /* target ID */ - u8 lun; /* LUN */ - u8 cluster_type; /* cluster properties */ - } hdr_list[MAX_HDRIVES]; /* index is host drive number */ -} gdth_ioctl_rescan; - -/* GDTIOCTL_RESET_BUS/GDTIOCTL_RESET_DRV */ -typedef struct { - u16 ionode; /* controller number */ - u16 number; /* bus/host drive number */ - u16 status; /* status */ -} gdth_ioctl_reset; - -#endif diff --git a/drivers/scsi/gdth_proc.c b/drivers/scsi/gdth_proc.c deleted file mode 100644 index c764312f9ba0..000000000000 --- a/drivers/scsi/gdth_proc.c +++ /dev/null @@ -1,586 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* gdth_proc.c - * $Id: gdth_proc.c,v 1.43 2006/01/11 16:15:00 achim Exp $ - */ - -#include <linux/completion.h> -#include <linux/slab.h> - -int gdth_set_info(struct Scsi_Host *host, char *buffer, int length) -{ - gdth_ha_str *ha = shost_priv(host); - int ret_val = -EINVAL; - - TRACE2(("gdth_set_info() ha %d\n",ha->hanum,)); - - if (length >= 4) { - if (strncmp(buffer,"gdth",4) == 0) { - buffer += 5; - length -= 5; - ret_val = gdth_set_asc_info(host, buffer, length, ha); - } - } - - return ret_val; -} - -static int gdth_set_asc_info(struct Scsi_Host *host, char *buffer, - int length, gdth_ha_str *ha) -{ - int orig_length, drive, wb_mode; - int i, found; - gdth_cmd_str gdtcmd; - gdth_cpar_str *pcpar; - - char cmnd[MAX_COMMAND_SIZE]; - memset(cmnd, 0xff, 12); - memset(&gdtcmd, 0, sizeof(gdth_cmd_str)); - - TRACE2(("gdth_set_asc_info() ha %d\n",ha->hanum)); - orig_length = length + 5; - drive = -1; - wb_mode = 0; - found = FALSE; - - if (length >= 5 && strncmp(buffer,"flush",5)==0) { - buffer += 6; - length -= 6; - if (length && *buffer>='0' && *buffer<='9') { - drive = (int)(*buffer-'0'); - ++buffer; --length; - if (length && *buffer>='0' && *buffer<='9') { - drive = drive*10 + (int)(*buffer-'0'); - ++buffer; --length; - } - printk("GDT: Flushing host drive %d .. ",drive); - } else { - printk("GDT: Flushing all host drives .. "); - } - for (i = 0; i < MAX_HDRIVES; ++i) { - if (ha->hdr[i].present) { - if (drive != -1 && i != drive) - continue; - found = TRUE; - gdtcmd.Service = CACHESERVICE; - gdtcmd.OpCode = GDT_FLUSH; - if (ha->cache_feat & GDT_64BIT) { - gdtcmd.u.cache64.DeviceNo = i; - gdtcmd.u.cache64.BlockNo = 1; - } else { - gdtcmd.u.cache.DeviceNo = i; - gdtcmd.u.cache.BlockNo = 1; - } - - gdth_execute(host, &gdtcmd, cmnd, 30, NULL); - } - } - if (!found) - printk("\nNo host drive found !\n"); - else - printk("Done.\n"); - return(orig_length); - } - - if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) { - buffer += 8; - length -= 8; - printk("GDT: Disabling write back permanently .. "); - wb_mode = 1; - } else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) { - buffer += 7; - length -= 7; - printk("GDT: Enabling write back permanently .. "); - wb_mode = 2; - } else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) { - buffer += 7; - length -= 7; - printk("GDT: Disabling write back commands .. "); - if (ha->cache_feat & GDT_WR_THROUGH) { - gdth_write_through = TRUE; - printk("Done.\n"); - } else { - printk("Not supported !\n"); - } - return(orig_length); - } else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) { - buffer += 6; - length -= 6; - printk("GDT: Enabling write back commands .. "); - gdth_write_through = FALSE; - printk("Done.\n"); - return(orig_length); - } - - if (wb_mode) { - unsigned long flags; - - BUILD_BUG_ON(sizeof(gdth_cpar_str) > GDTH_SCRATCH); - - spin_lock_irqsave(&ha->smp_lock, flags); - if (ha->scratch_busy) { - spin_unlock_irqrestore(&ha->smp_lock, flags); - return -EBUSY; - } - ha->scratch_busy = TRUE; - spin_unlock_irqrestore(&ha->smp_lock, flags); - - pcpar = (gdth_cpar_str *)ha->pscratch; - memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) ); - gdtcmd.Service = CACHESERVICE; - gdtcmd.OpCode = GDT_IOCTL; - gdtcmd.u.ioctl.p_param = ha->scratch_phys; - gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str); - gdtcmd.u.ioctl.subfunc = CACHE_CONFIG; - gdtcmd.u.ioctl.channel = INVALID_CHANNEL; - pcpar->write_back = wb_mode==1 ? 0:1; - - gdth_execute(host, &gdtcmd, cmnd, 30, NULL); - - spin_lock_irqsave(&ha->smp_lock, flags); - ha->scratch_busy = FALSE; - spin_unlock_irqrestore(&ha->smp_lock, flags); - - printk("Done.\n"); - return(orig_length); - } - - printk("GDT: Unknown command: %s Length: %d\n",buffer,length); - return(-EINVAL); -} - -int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) -{ - gdth_ha_str *ha = shost_priv(host); - int hlen; - int id, i, j, k, sec, flag; - int no_mdrv = 0, drv_no, is_mirr; - u32 cnt; - dma_addr_t paddr; - int rc = -ENOMEM; - - gdth_cmd_str *gdtcmd; - gdth_evt_str *estr; - char hrec[277]; - - char *buf; - gdth_dskstat_str *pds; - gdth_diskinfo_str *pdi; - gdth_arrayinf_str *pai; - gdth_defcnt_str *pdef; - gdth_cdrinfo_str *pcdi; - gdth_hget_str *phg; - char cmnd[MAX_COMMAND_SIZE]; - - gdtcmd = kmalloc(sizeof(*gdtcmd), GFP_KERNEL); - estr = kmalloc(sizeof(*estr), GFP_KERNEL); - if (!gdtcmd || !estr) - goto free_fail; - - memset(cmnd, 0xff, 12); - memset(gdtcmd, 0, sizeof(gdth_cmd_str)); - - TRACE2(("gdth_get_info() ha %d\n",ha->hanum)); - - - /* request is i.e. "cat /proc/scsi/gdth/0" */ - /* format: %-15s\t%-10s\t%-15s\t%s */ - /* driver parameters */ - seq_puts(m, "Driver Parameters:\n"); - if (reserve_list[0] == 0xff) - strcpy(hrec, "--"); - else { - hlen = sprintf(hrec, "%d", reserve_list[0]); - for (i = 1; i < MAX_RES_ARGS; i++) { - if (reserve_list[i] == 0xff) - break; - hlen += scnprintf(hrec + hlen, 161 - hlen, ",%d", reserve_list[i]); - } - } - seq_printf(m, - " reserve_mode: \t%d \treserve_list: \t%s\n", - reserve_mode, hrec); - seq_printf(m, - " max_ids: \t%-3d \thdr_channel: \t%d\n", - max_ids, hdr_channel); - - /* controller information */ - seq_puts(m, "\nDisk Array Controller Information:\n"); - seq_printf(m, - " Number: \t%d \tName: \t%s\n", - ha->hanum, ha->binfo.type_string); - - seq_printf(m, - " Driver Ver.: \t%-10s\tFirmware Ver.: \t", - GDTH_VERSION_STR); - if (ha->more_proc) - seq_printf(m, "%d.%02d.%02d-%c%03X\n", - (u8)(ha->binfo.upd_fw_ver>>24), - (u8)(ha->binfo.upd_fw_ver>>16), - (u8)(ha->binfo.upd_fw_ver), - ha->bfeat.raid ? 'R':'N', - ha->binfo.upd_revision); - else - seq_printf(m, "%d.%02d\n", (u8)(ha->cpar.version>>8), - (u8)(ha->cpar.version)); - - if (ha->more_proc) - /* more information: 1. about controller */ - seq_printf(m, - " Serial No.: \t0x%8X\tCache RAM size:\t%d KB\n", - ha->binfo.ser_no, ha->binfo.memsize / 1024); - - if (ha->more_proc) { - size_t size = max_t(size_t, GDTH_SCRATCH, sizeof(gdth_hget_str)); - - /* more information: 2. about physical devices */ - seq_puts(m, "\nPhysical Devices:"); - flag = FALSE; - - buf = dma_alloc_coherent(&ha->pdev->dev, size, &paddr, GFP_KERNEL); - if (!buf) - goto stop_output; - for (i = 0; i < ha->bus_cnt; ++i) { - /* 2.a statistics (and retries/reassigns) */ - TRACE2(("pdr_statistics() chn %d\n",i)); - pds = (gdth_dskstat_str *)(buf + GDTH_SCRATCH/4); - gdtcmd->Service = CACHESERVICE; - gdtcmd->OpCode = GDT_IOCTL; - gdtcmd->u.ioctl.p_param = paddr + GDTH_SCRATCH/4; - gdtcmd->u.ioctl.param_size = 3*GDTH_SCRATCH/4; - gdtcmd->u.ioctl.subfunc = DSK_STATISTICS | L_CTRL_PATTERN; - gdtcmd->u.ioctl.channel = ha->raw[i].address | INVALID_CHANNEL; - pds->bid = ha->raw[i].local_no; - pds->first = 0; - pds->entries = ha->raw[i].pdev_cnt; - cnt = (3*GDTH_SCRATCH/4 - 5 * sizeof(u32)) / - sizeof(pds->list[0]); - if (pds->entries > cnt) - pds->entries = cnt; - - if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK) - pds->count = 0; - - /* other IOCTLs must fit into area GDTH_SCRATCH/4 */ - for (j = 0; j < ha->raw[i].pdev_cnt; ++j) { - /* 2.b drive info */ - TRACE2(("scsi_drv_info() chn %d dev %d\n", - i, ha->raw[i].id_list[j])); - pdi = (gdth_diskinfo_str *)buf; - gdtcmd->Service = CACHESERVICE; - gdtcmd->OpCode = GDT_IOCTL; - gdtcmd->u.ioctl.p_param = paddr; - gdtcmd->u.ioctl.param_size = sizeof(gdth_diskinfo_str); - gdtcmd->u.ioctl.subfunc = SCSI_DR_INFO | L_CTRL_PATTERN; - gdtcmd->u.ioctl.channel = - ha->raw[i].address | ha->raw[i].id_list[j]; - - if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) { - strncpy(hrec,pdi->vendor,8); - strncpy(hrec+8,pdi->product,16); - strncpy(hrec+24,pdi->revision,4); - hrec[28] = 0; - seq_printf(m, - "\n Chn/ID/LUN: \t%c/%02d/%d \tName: \t%s\n", - 'A'+i,pdi->target_id,pdi->lun,hrec); - flag = TRUE; - pdi->no_ldrive &= 0xffff; - if (pdi->no_ldrive == 0xffff) - strcpy(hrec,"--"); - else - sprintf(hrec,"%d",pdi->no_ldrive); - seq_printf(m, - " Capacity [MB]:\t%-6d \tTo Log. Drive: \t%s\n", - pdi->blkcnt/(1024*1024/pdi->blksize), - hrec); - } else { - pdi->devtype = 0xff; - } - - if (pdi->devtype == 0) { - /* search retries/reassigns */ - for (k = 0; k < pds->count; ++k) { - if (pds->list[k].tid == pdi->target_id && - pds->list[k].lun == pdi->lun) { - seq_printf(m, - " Retries: \t%-6d \tReassigns: \t%d\n", - pds->list[k].retries, - pds->list[k].reassigns); - break; - } - } - /* 2.c grown defects */ - TRACE2(("scsi_drv_defcnt() chn %d dev %d\n", - i, ha->raw[i].id_list[j])); - pdef = (gdth_defcnt_str *)buf; - gdtcmd->Service = CACHESERVICE; - gdtcmd->OpCode = GDT_IOCTL; - gdtcmd->u.ioctl.p_param = paddr; - gdtcmd->u.ioctl.param_size = sizeof(gdth_defcnt_str); - gdtcmd->u.ioctl.subfunc = SCSI_DEF_CNT | L_CTRL_PATTERN; - gdtcmd->u.ioctl.channel = - ha->raw[i].address | ha->raw[i].id_list[j]; - pdef->sddc_type = 0x08; - - if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) { - seq_printf(m, - " Grown Defects:\t%d\n", - pdef->sddc_cnt); - } - } - } - } - - if (!flag) - seq_puts(m, "\n --\n"); - - /* 3. about logical drives */ - seq_puts(m, "\nLogical Drives:"); - flag = FALSE; - - for (i = 0; i < MAX_LDRIVES; ++i) { - if (!ha->hdr[i].is_logdrv) - continue; - drv_no = i; - j = k = 0; - is_mirr = FALSE; - do { - /* 3.a log. drive info */ - TRACE2(("cache_drv_info() drive no %d\n",drv_no)); - pcdi = (gdth_cdrinfo_str *)buf; - gdtcmd->Service = CACHESERVICE; - gdtcmd->OpCode = GDT_IOCTL; - gdtcmd->u.ioctl.p_param = paddr; - gdtcmd->u.ioctl.param_size = sizeof(gdth_cdrinfo_str); - gdtcmd->u.ioctl.subfunc = CACHE_DRV_INFO; - gdtcmd->u.ioctl.channel = drv_no; - if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) != S_OK) - break; - pcdi->ld_dtype >>= 16; - j++; - if (pcdi->ld_dtype > 2) { - strcpy(hrec, "missing"); - } else if (pcdi->ld_error & 1) { - strcpy(hrec, "fault"); - } else if (pcdi->ld_error & 2) { - strcpy(hrec, "invalid"); - k++; j--; - } else { - strcpy(hrec, "ok"); - } - - if (drv_no == i) { - seq_printf(m, - "\n Number: \t%-2d \tStatus: \t%s\n", - drv_no, hrec); - flag = TRUE; - no_mdrv = pcdi->cd_ldcnt; - if (no_mdrv > 1 || pcdi->ld_slave != -1) { - is_mirr = TRUE; - strcpy(hrec, "RAID-1"); - } else if (pcdi->ld_dtype == 0) { - strcpy(hrec, "Disk"); - } else if (pcdi->ld_dtype == 1) { - strcpy(hrec, "RAID-0"); - } else if (pcdi->ld_dtype == 2) { - strcpy(hrec, "Chain"); - } else { - strcpy(hrec, "???"); - } - seq_printf(m, - " Capacity [MB]:\t%-6d \tType: \t%s\n", - pcdi->ld_blkcnt/(1024*1024/pcdi->ld_blksize), - hrec); - } else { - seq_printf(m, - " Slave Number: \t%-2d \tStatus: \t%s\n", - drv_no & 0x7fff, hrec); - } - drv_no = pcdi->ld_slave; - } while (drv_no != -1); - - if (is_mirr) - seq_printf(m, - " Missing Drv.: \t%-2d \tInvalid Drv.: \t%d\n", - no_mdrv - j - k, k); - - if (!ha->hdr[i].is_arraydrv) - strcpy(hrec, "--"); - else - sprintf(hrec, "%d", ha->hdr[i].master_no); - seq_printf(m, - " To Array Drv.:\t%s\n", hrec); - } - - if (!flag) - seq_puts(m, "\n --\n"); - - /* 4. about array drives */ - seq_puts(m, "\nArray Drives:"); - flag = FALSE; - - for (i = 0; i < MAX_LDRIVES; ++i) { - if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master)) - continue; - /* 4.a array drive info */ - TRACE2(("array_info() drive no %d\n",i)); - pai = (gdth_arrayinf_str *)buf; - gdtcmd->Service = CACHESERVICE; - gdtcmd->OpCode = GDT_IOCTL; - gdtcmd->u.ioctl.p_param = paddr; - gdtcmd->u.ioctl.param_size = sizeof(gdth_arrayinf_str); - gdtcmd->u.ioctl.subfunc = ARRAY_INFO | LA_CTRL_PATTERN; - gdtcmd->u.ioctl.channel = i; - if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) { - if (pai->ai_state == 0) - strcpy(hrec, "idle"); - else if (pai->ai_state == 2) - strcpy(hrec, "build"); - else if (pai->ai_state == 4) - strcpy(hrec, "ready"); - else if (pai->ai_state == 6) - strcpy(hrec, "fail"); - else if (pai->ai_state == 8 || pai->ai_state == 10) - strcpy(hrec, "rebuild"); - else - strcpy(hrec, "error"); - if (pai->ai_ext_state & 0x10) - strcat(hrec, "/expand"); - else if (pai->ai_ext_state & 0x1) - strcat(hrec, "/patch"); - seq_printf(m, - "\n Number: \t%-2d \tStatus: \t%s\n", - i,hrec); - flag = TRUE; - - if (pai->ai_type == 0) - strcpy(hrec, "RAID-0"); - else if (pai->ai_type == 4) - strcpy(hrec, "RAID-4"); - else if (pai->ai_type == 5) - strcpy(hrec, "RAID-5"); - else - strcpy(hrec, "RAID-10"); - seq_printf(m, - " Capacity [MB]:\t%-6d \tType: \t%s\n", - pai->ai_size/(1024*1024/pai->ai_secsize), - hrec); - } - } - - if (!flag) - seq_puts(m, "\n --\n"); - - /* 5. about host drives */ - seq_puts(m, "\nHost Drives:"); - flag = FALSE; - - for (i = 0; i < MAX_LDRIVES; ++i) { - if (!ha->hdr[i].is_logdrv || - (ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master)) - continue; - /* 5.a get host drive list */ - TRACE2(("host_get() drv_no %d\n",i)); - phg = (gdth_hget_str *)buf; - gdtcmd->Service = CACHESERVICE; - gdtcmd->OpCode = GDT_IOCTL; - gdtcmd->u.ioctl.p_param = paddr; - gdtcmd->u.ioctl.param_size = sizeof(gdth_hget_str); - gdtcmd->u.ioctl.subfunc = HOST_GET | LA_CTRL_PATTERN; - gdtcmd->u.ioctl.channel = i; - phg->entries = MAX_HDRIVES; - phg->offset = GDTOFFSOF(gdth_hget_str, entry[0]); - if (gdth_execute(host, gdtcmd, cmnd, 30, NULL) == S_OK) { - ha->hdr[i].ldr_no = i; - ha->hdr[i].rw_attribs = 0; - ha->hdr[i].start_sec = 0; - } else { - for (j = 0; j < phg->entries; ++j) { - k = phg->entry[j].host_drive; - if (k >= MAX_LDRIVES) - continue; - ha->hdr[k].ldr_no = phg->entry[j].log_drive; - ha->hdr[k].rw_attribs = phg->entry[j].rw_attribs; - ha->hdr[k].start_sec = phg->entry[j].start_sec; - } - } - } - dma_free_coherent(&ha->pdev->dev, size, buf, paddr); - - for (i = 0; i < MAX_HDRIVES; ++i) { - if (!(ha->hdr[i].present)) - continue; - - seq_printf(m, - "\n Number: \t%-2d \tArr/Log. Drive:\t%d\n", - i, ha->hdr[i].ldr_no); - flag = TRUE; - - seq_printf(m, - " Capacity [MB]:\t%-6d \tStart Sector: \t%d\n", - (u32)(ha->hdr[i].size/2048), ha->hdr[i].start_sec); - } - - if (!flag) - seq_puts(m, "\n --\n"); - } - - /* controller events */ - seq_puts(m, "\nController Events:\n"); - - for (id = -1;;) { - id = gdth_read_event(ha, id, estr); - if (estr->event_source == 0) - break; - if (estr->event_data.eu.driver.ionode == ha->hanum && - estr->event_source == ES_ASYNC) { - gdth_log_event(&estr->event_data, hrec); - - /* - * Elapsed seconds subtraction with unsigned operands is - * safe from wrap around in year 2106. Executes as: - * operand a + (2's complement operand b) + 1 - */ - - sec = (int)((u32)ktime_get_real_seconds() - estr->first_stamp); - if (sec < 0) sec = 0; - seq_printf(m," date- %02d:%02d:%02d\t%s\n", - sec/3600, sec%3600/60, sec%60, hrec); - } - if (id == -1) - break; - } -stop_output: - rc = 0; -free_fail: - kfree(gdtcmd); - kfree(estr); - return rc; -} - -static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id) -{ - unsigned long flags; - int i; - struct scsi_cmnd *scp; - struct gdth_cmndinfo *cmndinfo; - u8 b, t; - - spin_lock_irqsave(&ha->smp_lock, flags); - - for (i = 0; i < GDTH_MAXCMDS; ++i) { - scp = ha->cmd_tab[i].cmnd; - cmndinfo = gdth_cmnd_priv(scp); - - b = scp->device->channel; - t = scp->device->id; - if (!SPECIAL_SCP(scp) && t == (u8)id && - b == (u8)busnum) { - cmndinfo->wait_for_completion = 0; - spin_unlock_irqrestore(&ha->smp_lock, flags); - while (!cmndinfo->wait_for_completion) - barrier(); - spin_lock_irqsave(&ha->smp_lock, flags); - } - } - spin_unlock_irqrestore(&ha->smp_lock, flags); -} diff --git a/drivers/scsi/gdth_proc.h b/drivers/scsi/gdth_proc.h deleted file mode 100644 index 4cc5377cb92e..000000000000 --- a/drivers/scsi/gdth_proc.h +++ /dev/null @@ -1,18 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _GDTH_PROC_H -#define _GDTH_PROC_H - -/* gdth_proc.h - * $Id: gdth_proc.h,v 1.16 2004/01/14 13:09:01 achim Exp $ - */ - -int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd, - int timeout, u32 *info); - -static int gdth_set_asc_info(struct Scsi_Host *host, char *buffer, - int length, gdth_ha_str *ha); - -static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id); - -#endif - -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 02/21] block: add flag for internal commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke 2020-07-03 13:01 ` [PATCH 01/21] scsi: drop gdth driver Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-08 9:27 ` John Garry 2020-07-03 13:01 ` [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke ` (19 subsequent siblings) 21 siblings, 1 reply; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Some drivers require to allocate requests for internal command submission. These request will never be passed through the block layer, but nevertheless require a valid tag to avoid them clashing with normal I/O commands. This patch adds a new request flag REQ_INTERNAL to mark such requests and a terminates any such commands in blk_execute_rq_nowait() with a WARN_ON_ONCE to signal such an invalid usage. Signed-off-by: Hannes Reinecke <hare@suse.de> --- block/blk-exec.c | 5 +++++ include/linux/blk_types.h | 2 ++ include/linux/blkdev.h | 5 +++++ 3 files changed, 12 insertions(+) diff --git a/block/blk-exec.c b/block/blk-exec.c index 85324d53d072..6869877e0d21 100644 --- a/block/blk-exec.c +++ b/block/blk-exec.c @@ -55,6 +55,11 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, rq->rq_disk = bd_disk; rq->end_io = done; + if (WARN_ON_ONCE(blk_rq_is_internal(rq))) { + blk_mq_end_request(rq, BLK_STS_NOTSUPP); + return; + } + blk_account_io_start(rq); /* diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index ccb895f911b1..e386c43e4d77 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -360,6 +360,7 @@ enum req_flag_bits { /* for driver use */ __REQ_DRV, __REQ_SWAP, /* swapping request. */ + __REQ_INTERNAL, /* driver-internal command */ __REQ_NR_BITS, /* stops here */ }; @@ -384,6 +385,7 @@ enum req_flag_bits { #define REQ_DRV (1ULL << __REQ_DRV) #define REQ_SWAP (1ULL << __REQ_SWAP) +#define REQ_INTERNAL (1ULL << __REQ_INTERNAL) #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 8fd900998b4e..d09210d4591e 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -273,6 +273,11 @@ static inline bool blk_rq_is_passthrough(struct request *rq) return blk_rq_is_scsi(rq) || blk_rq_is_private(rq); } +static inline bool blk_rq_is_internal(struct request *rq) +{ + return rq->cmd_flags & REQ_INTERNAL; +} + static inline bool bio_is_passthrough(struct bio *bio) { unsigned op = bio_op(bio); -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* Re: [PATCH 02/21] block: add flag for internal commands 2020-07-03 13:01 ` [PATCH 02/21] block: add flag for internal commands Hannes Reinecke @ 2020-07-08 9:27 ` John Garry 2020-07-09 20:02 ` Jens Axboe 0 siblings, 1 reply; 38+ messages in thread From: John Garry @ 2020-07-08 9:27 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, linux-block On 03/07/2020 14:01, Hannes Reinecke wrote: +linux-block I figure that linux-block should be cc'ed here > Some drivers require to allocate requests for internal command > submission. These request will never be passed through the block > layer, but nevertheless require a valid tag to avoid them clashing > with normal I/O commands. > This patch adds a new request flag REQ_INTERNAL to mark such > requests and a terminates any such commands in blk_execute_rq_nowait() > with a WARN_ON_ONCE to signal such an invalid usage. > > Signed-off-by: Hannes Reinecke <hare@suse.de> > --- > block/blk-exec.c | 5 +++++ > include/linux/blk_types.h | 2 ++ > include/linux/blkdev.h | 5 +++++ > 3 files changed, 12 insertions(+) > > diff --git a/block/blk-exec.c b/block/blk-exec.c > index 85324d53d072..6869877e0d21 100644 > --- a/block/blk-exec.c > +++ b/block/blk-exec.c > @@ -55,6 +55,11 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, > rq->rq_disk = bd_disk; > rq->end_io = done; > > + if (WARN_ON_ONCE(blk_rq_is_internal(rq))) { > + blk_mq_end_request(rq, BLK_STS_NOTSUPP); > + return; > + } > + > blk_account_io_start(rq); > > /* > diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h > index ccb895f911b1..e386c43e4d77 100644 > --- a/include/linux/blk_types.h > +++ b/include/linux/blk_types.h > @@ -360,6 +360,7 @@ enum req_flag_bits { > /* for driver use */ > __REQ_DRV, > __REQ_SWAP, /* swapping request. */ > + __REQ_INTERNAL, /* driver-internal command */ > __REQ_NR_BITS, /* stops here */ > }; > > @@ -384,6 +385,7 @@ enum req_flag_bits { > > #define REQ_DRV (1ULL << __REQ_DRV) > #define REQ_SWAP (1ULL << __REQ_SWAP) > +#define REQ_INTERNAL (1ULL << __REQ_INTERNAL) > > #define REQ_FAILFAST_MASK \ > (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index 8fd900998b4e..d09210d4591e 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -273,6 +273,11 @@ static inline bool blk_rq_is_passthrough(struct request *rq) > return blk_rq_is_scsi(rq) || blk_rq_is_private(rq); > } > > +static inline bool blk_rq_is_internal(struct request *rq) > +{ > + return rq->cmd_flags & REQ_INTERNAL; > +} > + > static inline bool bio_is_passthrough(struct bio *bio) > { > unsigned op = bio_op(bio); > ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 02/21] block: add flag for internal commands 2020-07-08 9:27 ` John Garry @ 2020-07-09 20:02 ` Jens Axboe 2020-07-17 10:32 ` John Garry 0 siblings, 1 reply; 38+ messages in thread From: Jens Axboe @ 2020-07-09 20:02 UTC (permalink / raw) To: John Garry, Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, linux-block On 7/8/20 3:27 AM, John Garry wrote: > On 03/07/2020 14:01, Hannes Reinecke wrote: > > +linux-block > > I figure that linux-block should be cc'ed here > >> Some drivers require to allocate requests for internal command >> submission. These request will never be passed through the block >> layer, but nevertheless require a valid tag to avoid them clashing >> with normal I/O commands. >> This patch adds a new request flag REQ_INTERNAL to mark such >> requests and a terminates any such commands in blk_execute_rq_nowait() >> with a WARN_ON_ONCE to signal such an invalid usage. >> >> Signed-off-by: Hannes Reinecke <hare@suse.de> >> --- >> block/blk-exec.c | 5 +++++ >> include/linux/blk_types.h | 2 ++ >> include/linux/blkdev.h | 5 +++++ >> 3 files changed, 12 insertions(+) >> >> diff --git a/block/blk-exec.c b/block/blk-exec.c >> index 85324d53d072..6869877e0d21 100644 >> --- a/block/blk-exec.c >> +++ b/block/blk-exec.c >> @@ -55,6 +55,11 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, >> rq->rq_disk = bd_disk; >> rq->end_io = done; >> >> + if (WARN_ON_ONCE(blk_rq_is_internal(rq))) { >> + blk_mq_end_request(rq, BLK_STS_NOTSUPP); >> + return; >> + } >> + >> blk_account_io_start(rq); The whole concept seems very odd, and then there's this seemingly randomly placed check and error condition. As I haven't seen the actual use case for this, hard to make suggestions though. -- Jens Axboe ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 02/21] block: add flag for internal commands 2020-07-09 20:02 ` Jens Axboe @ 2020-07-17 10:32 ` John Garry 0 siblings, 0 replies; 38+ messages in thread From: John Garry @ 2020-07-17 10:32 UTC (permalink / raw) To: Jens Axboe, Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, linux-block On 09/07/2020 21:02, Jens Axboe wrote: > On 7/8/20 3:27 AM, John Garry wrote: >> On 03/07/2020 14:01, Hannes Reinecke wrote: >> >> +linux-block >> >> I figure that linux-block should be cc'ed here >> >>> Some drivers require to allocate requests for internal command >>> submission. These request will never be passed through the block >>> layer, but nevertheless require a valid tag to avoid them clashing >>> with normal I/O commands. >>> This patch adds a new request flag REQ_INTERNAL to mark such >>> requests and a terminates any such commands in blk_execute_rq_nowait() >>> with a WARN_ON_ONCE to signal such an invalid usage. So if these requests will never be passed through the block layer - as you say - then why add a check for this? Surely you will find out in nasty and obvious ways that it should be done. Thanks, John >>> >>> Signed-off-by: Hannes Reinecke <hare@suse.de> >>> --- >>> block/blk-exec.c | 5 +++++ >>> include/linux/blk_types.h | 2 ++ >>> include/linux/blkdev.h | 5 +++++ >>> 3 files changed, 12 insertions(+) >>> >>> diff --git a/block/blk-exec.c b/block/blk-exec.c >>> index 85324d53d072..6869877e0d21 100644 >>> --- a/block/blk-exec.c >>> +++ b/block/blk-exec.c >>> @@ -55,6 +55,11 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, >>> rq->rq_disk = bd_disk; >>> rq->end_io = done; >>> >>> + if (WARN_ON_ONCE(blk_rq_is_internal(rq))) { >>> + blk_mq_end_request(rq, BLK_STS_NOTSUPP); >>> + return; >>> + } >>> + >>> blk_account_io_start(rq); > > The whole concept seems very odd, and then there's this seemingly > randomly placed check and error condition. As I haven't seen the > actual use case for this, hard to make suggestions though. > ^ permalink raw reply [flat|nested] 38+ messages in thread
* [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke 2020-07-03 13:01 ` [PATCH 01/21] scsi: drop gdth driver Hannes Reinecke 2020-07-03 13:01 ` [PATCH 02/21] block: add flag for internal commands Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-07 13:54 ` John Garry 2020-11-16 8:56 ` John Garry 2020-07-03 13:01 ` [PATCH 04/21] fnic: use internal commands Hannes Reinecke ` (18 subsequent siblings) 21 siblings, 2 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Add helper functions to allow LLDDs to allocate and free internal commands. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/scsi_lib.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ include/scsi/scsi_device.h | 4 ++++ 2 files changed, 49 insertions(+) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 0ba7a65e7c8d..1d5c1b9a1203 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1903,6 +1903,51 @@ void scsi_mq_destroy_tags(struct Scsi_Host *shost) blk_mq_free_tag_set(&shost->tag_set); } +/** + * scsi_get_internal_cmd - allocate an internal SCSI command + * @sdev: SCSI device from which to allocate the command + * @data_direction: Data direction for the allocated command + * @op_flags: request allocation flags + * + * Allocates a SCSI command for internal LLDD use. + */ +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, + enum dma_data_direction data_direction, int op_flags) +{ + struct request *rq; + struct scsi_cmnd *scmd; + blk_mq_req_flags_t flags = 0; + unsigned int op = REQ_INTERNAL | op_flags; + + op |= (data_direction == DMA_TO_DEVICE) ? + REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; + rq = blk_mq_alloc_request(sdev->request_queue, op, flags); + if (IS_ERR(rq)) + return NULL; + scmd = blk_mq_rq_to_pdu(rq); + scmd->request = rq; + scmd->device = sdev; + return scmd; +} +EXPORT_SYMBOL_GPL(scsi_get_internal_cmd); + +/** + * scsi_put_internal_cmd - free an internal SCSI command + * @scmd: SCSI command to be freed + * + * Check if @scmd is an internal command, and call + * blk_mq_free_request() if true. + */ +void scsi_put_internal_cmd(struct scsi_cmnd *scmd) +{ + struct request *rq = blk_mq_rq_from_pdu(scmd); + + if (WARN_ON(!blk_rq_is_internal(rq))) + return; + blk_mq_free_request(rq); +} +EXPORT_SYMBOL_GPL(scsi_put_internal_cmd); + /** * scsi_device_from_queue - return sdev associated with a request_queue * @q: The request queue to return the sdev from diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index bc5909033d13..2759a538adae 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -8,6 +8,7 @@ #include <linux/blkdev.h> #include <scsi/scsi.h> #include <linux/atomic.h> +#include <linux/dma-direction.h> struct device; struct request_queue; @@ -460,6 +461,9 @@ static inline int scsi_execute_req(struct scsi_device *sdev, return scsi_execute(sdev, cmd, data_direction, buffer, bufflen, NULL, sshdr, timeout, retries, 0, 0, resid); } +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, + enum dma_data_direction data_direction, int op_flags); +void scsi_put_internal_cmd(struct scsi_cmnd *scmd); extern void sdev_disable_disk_events(struct scsi_device *sdev); extern void sdev_enable_disk_events(struct scsi_device *sdev); extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t); -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* Re: [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper 2020-07-03 13:01 ` [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke @ 2020-07-07 13:54 ` John Garry 2020-11-16 8:56 ` John Garry 1 sibling, 0 replies; 38+ messages in thread From: John Garry @ 2020-07-07 13:54 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi On 03/07/2020 14:01, Hannes Reinecke wrote: > Add helper functions to allow LLDDs to allocate and free > internal commands. > > Signed-off-by: Hannes Reinecke <hare@suse.de> Not sure how Christoph feels about this now, but FWIW: Reviewed-by: John Garry <john.garry@huawei.com> But a couple of comments, below. > --- > drivers/scsi/scsi_lib.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ > include/scsi/scsi_device.h | 4 ++++ > 2 files changed, 49 insertions(+) > > diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c > index 0ba7a65e7c8d..1d5c1b9a1203 100644 > --- a/drivers/scsi/scsi_lib.c > +++ b/drivers/scsi/scsi_lib.c > @@ -1903,6 +1903,51 @@ void scsi_mq_destroy_tags(struct Scsi_Host *shost) > blk_mq_free_tag_set(&shost->tag_set); > } > > +/** > + * scsi_get_internal_cmd - allocate an internal SCSI command > + * @sdev: SCSI device from which to allocate the command > + * @data_direction: Data direction for the allocated command > + * @op_flags: request allocation flags > + * > + * Allocates a SCSI command for internal LLDD use. > + */ > +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, > + enum dma_data_direction data_direction, int op_flags) > +{ > + struct request *rq; > + struct scsi_cmnd *scmd; > + blk_mq_req_flags_t flags = 0; > + unsigned int op = REQ_INTERNAL | op_flags; nit: some people like ordering local variables in reverse Christmas tree style when possible, but I don't really care. > + > + op |= (data_direction == DMA_TO_DEVICE) ? > + REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; > + rq = blk_mq_alloc_request(sdev->request_queue, op, flags); > + if (IS_ERR(rq)) > + return NULL; > + scmd = blk_mq_rq_to_pdu(rq); > + scmd->request = rq; > + scmd->device = sdev; > + return scmd; > +} > +EXPORT_SYMBOL_GPL(scsi_get_internal_cmd); > + > +/** > + * scsi_put_internal_cmd - free an internal SCSI command > + * @scmd: SCSI command to be freed > + * > + * Check if @scmd is an internal command, and call > + * blk_mq_free_request() if true. > + */ > +void scsi_put_internal_cmd(struct scsi_cmnd *scmd) > +{ > + struct request *rq = blk_mq_rq_from_pdu(scmd); > + > + if (WARN_ON(!blk_rq_is_internal(rq))) > + return; > + blk_mq_free_request(rq); > +} > +EXPORT_SYMBOL_GPL(scsi_put_internal_cmd); > + > /** > * scsi_device_from_queue - return sdev associated with a request_queue > * @q: The request queue to return the sdev from > diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h > index bc5909033d13..2759a538adae 100644 > --- a/include/scsi/scsi_device.h > +++ b/include/scsi/scsi_device.h > @@ -8,6 +8,7 @@ > #include <linux/blkdev.h> > #include <scsi/scsi.h> > #include <linux/atomic.h> > +#include <linux/dma-direction.h> > > struct device; > struct request_queue; > @@ -460,6 +461,9 @@ static inline int scsi_execute_req(struct scsi_device *sdev, > return scsi_execute(sdev, cmd, data_direction, buffer, > bufflen, NULL, sshdr, timeout, retries, 0, 0, resid); > } > +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, > + enum dma_data_direction data_direction, int op_flags); > +void scsi_put_internal_cmd(struct scsi_cmnd *scmd); > extern void sdev_disable_disk_events(struct scsi_device *sdev); > extern void sdev_enable_disk_events(struct scsi_device *sdev); > extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t); If I go to delete all these externs so we can be consistent, will someone complain? > ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper 2020-07-03 13:01 ` [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke 2020-07-07 13:54 ` John Garry @ 2020-11-16 8:56 ` John Garry 2020-11-16 9:03 ` Hannes Reinecke 1 sibling, 1 reply; 38+ messages in thread From: John Garry @ 2020-11-16 8:56 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang On 03/07/2020 14:01, Hannes Reinecke wrote: > Add helper functions to allow LLDDs to allocate and free > internal commands. Hi Hannes, Is there any way to ensure that the request allocated is associated with some determined HW queue here? The reason for this requirement is that sometimes the LLDD must submit some internal IO (for which we allocate an "internal command") on a specific HW queue. An example of this is internal abort IO commands, which should be submitted on the same queue as the IO which we are attempting to abort was submitted. So, for sure, the LLDD does not have to honor the hwq associated with the request and submit on the desired queue, but then we lose the blk-mq CPU hotplug protection. And maybe other problems. One way to achieve this is to run scsi_get_internal_cmd() on a CPU associated with the desired HW queue, but that's a bit hacky. Not sure of another way. Thanks, John > > Signed-off-by: Hannes Reinecke <hare@suse.de> > --- > drivers/scsi/scsi_lib.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ > include/scsi/scsi_device.h | 4 ++++ > 2 files changed, 49 insertions(+) > > diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c > index 0ba7a65e7c8d..1d5c1b9a1203 100644 > --- a/drivers/scsi/scsi_lib.c > +++ b/drivers/scsi/scsi_lib.c > @@ -1903,6 +1903,51 @@ void scsi_mq_destroy_tags(struct Scsi_Host *shost) > blk_mq_free_tag_set(&shost->tag_set); > } > > +/** > + * scsi_get_internal_cmd - allocate an internal SCSI command > + * @sdev: SCSI device from which to allocate the command > + * @data_direction: Data direction for the allocated command > + * @op_flags: request allocation flags > + * > + * Allocates a SCSI command for internal LLDD use. > + */ > +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, > + enum dma_data_direction data_direction, int op_flags) > +{ > + struct request *rq; > + struct scsi_cmnd *scmd; > + blk_mq_req_flags_t flags = 0; > + unsigned int op = REQ_INTERNAL | op_flags; > + > + op |= (data_direction == DMA_TO_DEVICE) ? > + REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; > + rq = blk_mq_alloc_request(sdev->request_queue, op, flags); > + if (IS_ERR(rq)) > + return NULL; > + scmd = blk_mq_rq_to_pdu(rq); > + scmd->request = rq; > + scmd->device = sdev; > + return scmd; > +} > +EXPORT_SYMBOL_GPL(scsi_get_internal_cmd); > + > +/** > + * scsi_put_internal_cmd - free an internal SCSI command > + * @scmd: SCSI command to be freed > + * > + * Check if @scmd is an internal command, and call > + * blk_mq_free_request() if true. > + */ > +void scsi_put_internal_cmd(struct scsi_cmnd *scmd) > +{ > + struct request *rq = blk_mq_rq_from_pdu(scmd); > + > + if (WARN_ON(!blk_rq_is_internal(rq))) > + return; > + blk_mq_free_request(rq); > +} > +EXPORT_SYMBOL_GPL(scsi_put_internal_cmd); > + > /** > * scsi_device_from_queue - return sdev associated with a request_queue > * @q: The request queue to return the sdev from > diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h > index bc5909033d13..2759a538adae 100644 > --- a/include/scsi/scsi_device.h > +++ b/include/scsi/scsi_device.h > @@ -8,6 +8,7 @@ > #include <linux/blkdev.h> > #include <scsi/scsi.h> > #include <linux/atomic.h> > +#include <linux/dma-direction.h> > > struct device; > struct request_queue; > @@ -460,6 +461,9 @@ static inline int scsi_execute_req(struct scsi_device *sdev, > return scsi_execute(sdev, cmd, data_direction, buffer, > bufflen, NULL, sshdr, timeout, retries, 0, 0, resid); > } > +struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, > + enum dma_data_direction data_direction, int op_flags); > +void scsi_put_internal_cmd(struct scsi_cmnd *scmd); > extern void sdev_disable_disk_events(struct scsi_device *sdev); > extern void sdev_enable_disk_events(struct scsi_device *sdev); > extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t); > ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper 2020-11-16 8:56 ` John Garry @ 2020-11-16 9:03 ` Hannes Reinecke 2020-11-18 12:28 ` John Garry 2020-12-07 10:15 ` John Garry 0 siblings, 2 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-11-16 9:03 UTC (permalink / raw) To: John Garry, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang On 11/16/20 9:56 AM, John Garry wrote: > On 03/07/2020 14:01, Hannes Reinecke wrote: >> Add helper functions to allow LLDDs to allocate and free >> internal commands. > > Hi Hannes, > > Is there any way to ensure that the request allocated is associated with > some determined HW queue here? > > The reason for this requirement is that sometimes the LLDD must submit > some internal IO (for which we allocate an "internal command") on a > specific HW queue. An example of this is internal abort IO commands, > which should be submitted on the same queue as the IO which we are > attempting to abort was submitted. > > So, for sure, the LLDD does not have to honor the hwq associated with > the request and submit on the desired queue, but then we lose the blk-mq > CPU hotplug protection. And maybe other problems. > > One way to achieve this is to run scsi_get_internal_cmd() on a CPU > associated with the desired HW queue, but that's a bit hacky. Not sure > of another way. > Hmm. You are correct for the 'abort' command; that typically needs to be submitted to a specific hwq. Let me think about it... Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper 2020-11-16 9:03 ` Hannes Reinecke @ 2020-11-18 12:28 ` John Garry 2020-12-07 10:15 ` John Garry 1 sibling, 0 replies; 38+ messages in thread From: John Garry @ 2020-11-18 12:28 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang On 16/11/2020 09:03, Hannes Reinecke wrote: >> Hi Hannes, >> >> Is there any way to ensure that the request allocated is associated >> with some determined HW queue here? >> >> The reason for this requirement is that sometimes the LLDD must submit >> some internal IO (for which we allocate an "internal command") on a >> specific HW queue. An example of this is internal abort IO commands, >> which should be submitted on the same queue as the IO which we are >> attempting to abort was submitted. >> >> So, for sure, the LLDD does not have to honor the hwq associated with >> the request and submit on the desired queue, but then we lose the >> blk-mq CPU hotplug protection. And maybe other problems. >> >> One way to achieve this is to run scsi_get_internal_cmd() on a CPU >> associated with the desired HW queue, but that's a bit hacky. Not sure >> of another way. >> > Hmm. You are correct for the 'abort' command; that typically needs to be > submitted to a specific hwq. > So now I see that we have blk_mq_alloc_request_hctx(..., hctx_idx) already, so that should do the job :) Thanks, John ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper 2020-11-16 9:03 ` Hannes Reinecke 2020-11-18 12:28 ` John Garry @ 2020-12-07 10:15 ` John Garry 2020-12-07 15:52 ` Hannes Reinecke 1 sibling, 1 reply; 38+ messages in thread From: John Garry @ 2020-12-07 10:15 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang On 16/11/2020 09:03, Hannes Reinecke wrote: > On 11/16/20 9:56 AM, John Garry wrote: >> On 03/07/2020 14:01, Hannes Reinecke wrote: >>> Add helper functions to allow LLDDs to allocate and free >>> internal commands. >> >> Hi Hannes, >> >> Is there any way to ensure that the request allocated is associated >> with some determined HW queue here? >> >> The reason for this requirement is that sometimes the LLDD must submit >> some internal IO (for which we allocate an "internal command") on a >> specific HW queue. An example of this is internal abort IO commands, >> which should be submitted on the same queue as the IO which we are >> attempting to abort was submitted. >> >> So, for sure, the LLDD does not have to honor the hwq associated with >> the request and submit on the desired queue, but then we lose the >> blk-mq CPU hotplug protection. And maybe other problems. >> >> One way to achieve this is to run scsi_get_internal_cmd() on a CPU >> associated with the desired HW queue, but that's a bit hacky. Not sure >> of another way. >> > Hmm. You are correct for the 'abort' command; that typically needs to be > submitted to a specific hwq. > > Let me think about it... > Hannes, Earlier you mentioned " some drivers not only the command needs a tag, but the sgls also, thereby completely messing up our mq tags logic. So to map those we'd need to allocate _several_ tags for one command ..." Which drivers are these? Can you provide a pointer? Is this the blocker? Thanks, John ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper 2020-12-07 10:15 ` John Garry @ 2020-12-07 15:52 ` Hannes Reinecke 0 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-12-07 15:52 UTC (permalink / raw) To: John Garry, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang On 12/7/20 11:15 AM, John Garry wrote: > On 16/11/2020 09:03, Hannes Reinecke wrote: >> On 11/16/20 9:56 AM, John Garry wrote: >>> On 03/07/2020 14:01, Hannes Reinecke wrote: >>>> Add helper functions to allow LLDDs to allocate and free >>>> internal commands. >>> >>> Hi Hannes, >>> >>> Is there any way to ensure that the request allocated is associated >>> with some determined HW queue here? >>> >>> The reason for this requirement is that sometimes the LLDD must >>> submit some internal IO (for which we allocate an "internal command") >>> on a specific HW queue. An example of this is internal abort IO >>> commands, which should be submitted on the same queue as the IO which >>> we are attempting to abort was submitted. >>> >>> So, for sure, the LLDD does not have to honor the hwq associated with >>> the request and submit on the desired queue, but then we lose the >>> blk-mq CPU hotplug protection. And maybe other problems. >>> >>> One way to achieve this is to run scsi_get_internal_cmd() on a CPU >>> associated with the desired HW queue, but that's a bit hacky. Not >>> sure of another way. >>> >> Hmm. You are correct for the 'abort' command; that typically needs to >> be submitted to a specific hwq. >> >> Let me think about it... >> > > > Hannes, > > Earlier you mentioned " some drivers not only the command needs a tag, > but the sgls also, thereby completely messing up our mq tags logic. > So to map those we'd need to allocate _several_ tags for one command ..." > > Which drivers are these? Can you provide a pointer? Is this the blocker? > Not actually a blocker, more something which I had been thinking about. Point is, that the current blk-mq design assumes that each command requires a tag, and each tag maps to a single entity placed on the hardware submission queue. While this is okay for some drivers, it's not a straightforward match for other drivers: - FC uses 'Exchange IDs' to map commands; however, the lifetime for these XIDs is slightly different from the command lifetime. In case of an error the XID must not be re-used (on the same queue) until error recovery has taken place. Which means we cannot use the block-layer tags for XIDs but have to implement an internal facility for that (cf drivers/scsi/libfc/fc_exch.c to get some idea about that). - Some drivers like smartpqi or mpt3sas require the command _and the sgls_ to be placed on the submission queue, and every entity requires an unique tag. So again, we cannot leverage the block-layer tags to control the submission queue but have to implement a driver-specific thing. But I'll be rebasing my patches. Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer ^ permalink raw reply [flat|nested] 38+ messages in thread
* [PATCH 04/21] fnic: use internal commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (2 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 05/21] fnic: use scsi_host_busy_iter() to traverse commands Hannes Reinecke ` (17 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Remove hack to get tag for the reset command by using internal commands. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/fnic/fnic_scsi.c | 149 ++++++++++++++---------------------------- 1 file changed, 50 insertions(+), 99 deletions(-) diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index 27535c90b248..98bf21203230 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -101,7 +101,7 @@ static const char *fnic_fcpio_status_to_str(unsigned int status) return fcpio_status_str[status]; } -static void fnic_cleanup_io(struct fnic *fnic, int exclude_id); +static void fnic_cleanup_io(struct fnic *fnic); static inline spinlock_t *fnic_io_lock_hash(struct fnic *fnic, struct scsi_cmnd *sc) @@ -637,7 +637,7 @@ static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic, atomic64_inc(&reset_stats->fw_reset_completions); /* Clean up all outstanding io requests */ - fnic_cleanup_io(fnic, SCSI_NO_TAG); + fnic_cleanup_io(fnic); atomic64_set(&fnic->fnic_stats.fw_stats.active_fw_reqs, 0); atomic64_set(&fnic->fnic_stats.io_stats.active_ios, 0); @@ -1359,7 +1359,7 @@ int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) return wq_work_done; } -static void fnic_cleanup_io(struct fnic *fnic, int exclude_id) +static void fnic_cleanup_io(struct fnic *fnic) { int i; struct fnic_io_req *io_req; @@ -1370,9 +1370,6 @@ static void fnic_cleanup_io(struct fnic *fnic, int exclude_id) struct fnic_stats *fnic_stats = &fnic->fnic_stats; for (i = 0; i < fnic->fnic_max_tag_id; i++) { - if (i == exclude_id) - continue; - io_lock = fnic_io_lock_tag(fnic, i); spin_lock_irqsave(io_lock, flags); sc = scsi_host_find_tag(fnic->lport->host, i); @@ -2125,9 +2122,7 @@ static inline int fnic_queue_dr_io_req(struct fnic *fnic, * successfully aborted, 1 otherwise */ static int fnic_clean_pending_aborts(struct fnic *fnic, - struct scsi_cmnd *lr_sc, - bool new_sc) - + struct scsi_cmnd *lr_sc) { int tag, abt_tag; struct fnic_io_req *io_req; @@ -2148,7 +2143,7 @@ static int fnic_clean_pending_aborts(struct fnic *fnic, * ignore this lun reset cmd if issued using new SC * or cmds that do not belong to this lun */ - if (!sc || ((sc == lr_sc) && new_sc) || sc->device != lun_dev) { + if (!sc || sc == lr_sc || sc->device != lun_dev) { spin_unlock_irqrestore(io_lock, flags); continue; } @@ -2287,38 +2282,6 @@ static int fnic_clean_pending_aborts(struct fnic *fnic, return ret; } -/** - * fnic_scsi_host_start_tag - * Allocates tagid from host's tag list - **/ -static inline int -fnic_scsi_host_start_tag(struct fnic *fnic, struct scsi_cmnd *sc) -{ - struct request_queue *q = sc->request->q; - struct request *dummy; - - dummy = blk_mq_alloc_request(q, REQ_OP_WRITE, BLK_MQ_REQ_NOWAIT); - if (IS_ERR(dummy)) - return SCSI_NO_TAG; - - sc->tag = sc->request->tag = dummy->tag; - sc->host_scribble = (unsigned char *)dummy; - - return dummy->tag; -} - -/** - * fnic_scsi_host_end_tag - * frees tag allocated by fnic_scsi_host_start_tag. - **/ -static inline void -fnic_scsi_host_end_tag(struct fnic *fnic, struct scsi_cmnd *sc) -{ - struct request *dummy = (struct request *)sc->host_scribble; - - blk_mq_free_request(dummy); -} - /* * SCSI Eh thread issues a Lun Reset when one or more commands on a LUN * fail to get aborted. It calls driver's eh_device_reset with a SCSI command @@ -2335,19 +2298,19 @@ int fnic_device_reset(struct scsi_cmnd *sc) spinlock_t *io_lock; unsigned long flags; unsigned long start_time = 0; + struct scsi_device *sdev = sc->device; struct scsi_lun fc_lun; struct fnic_stats *fnic_stats; struct reset_stats *reset_stats; int tag = 0; DECLARE_COMPLETION_ONSTACK(tm_done); - int tag_gen_flag = 0; /*to track tags allocated by fnic driver*/ - bool new_sc = 0; + struct scsi_cmnd *reset_sc = NULL; /* Wait for rport to unblock */ fc_block_scsi_eh(sc); /* Get local-port, check ready and link up */ - lp = shost_priv(sc->device->host); + lp = shost_priv(sdev->host); fnic = lport_priv(lp); fnic_stats = &fnic->fnic_stats; @@ -2355,10 +2318,10 @@ int fnic_device_reset(struct scsi_cmnd *sc) atomic64_inc(&reset_stats->device_resets); - rport = starget_to_rport(scsi_target(sc->device)); + rport = starget_to_rport(scsi_target(sdev)); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Device reset called FCID 0x%x, LUN 0x%llx sc 0x%p\n", - rport->port_id, sc->device->lun, sc); + rport->port_id, sdev->lun, sc); if (lp->state != LPORT_ST_READY || !(lp->link_up)) goto fnic_device_reset_end; @@ -2369,42 +2332,30 @@ int fnic_device_reset(struct scsi_cmnd *sc) goto fnic_device_reset_end; } - CMD_FLAGS(sc) = FNIC_DEVICE_RESET; - /* Allocate tag if not present */ + reset_sc = scsi_get_internal_cmd(sdev, DMA_NONE, REQ_NOWAIT); + if (unlikely(!reset_sc)) + goto fnic_device_reset_end; - tag = sc->request->tag; - if (unlikely(tag < 0)) { - /* - * Really should fix the midlayer to pass in a proper - * request for ioctls... - */ - tag = fnic_scsi_host_start_tag(fnic, sc); - if (unlikely(tag == SCSI_NO_TAG)) - goto fnic_device_reset_end; - tag_gen_flag = 1; - new_sc = 1; - } - io_lock = fnic_io_lock_hash(fnic, sc); + CMD_FLAGS(reset_sc) = FNIC_DEVICE_RESET; + tag = reset_sc->request->tag; + io_lock = fnic_io_lock_hash(fnic, reset_sc); spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); /* - * If there is a io_req attached to this command, then use it, - * else allocate a new one. + * Allocate a new io_req. */ + io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); if (!io_req) { - io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); - if (!io_req) { - spin_unlock_irqrestore(io_lock, flags); - goto fnic_device_reset_end; - } - memset(io_req, 0, sizeof(*io_req)); - io_req->port_id = rport->port_id; - CMD_SP(sc) = (char *)io_req; + spin_unlock_irqrestore(io_lock, flags); + goto fnic_device_reset_end; } + memset(io_req, 0, sizeof(*io_req)); + io_req->port_id = rport->port_id; + CMD_SP(reset_sc) = (char *)io_req; + io_req->dr_done = &tm_done; - CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; - CMD_LR_STATUS(sc) = FCPIO_INVALID_CODE; + CMD_STATE(reset_sc) = FNIC_IOREQ_CMD_PENDING; + CMD_LR_STATUS(reset_sc) = FCPIO_INVALID_CODE; spin_unlock_irqrestore(io_lock, flags); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "TAG %x\n", tag); @@ -2413,15 +2364,15 @@ int fnic_device_reset(struct scsi_cmnd *sc) * issue the device reset, if enqueue failed, clean up the ioreq * and break assoc with scsi cmd */ - if (fnic_queue_dr_io_req(fnic, sc, io_req)) { + if (fnic_queue_dr_io_req(fnic, reset_sc, io_req)) { spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); if (io_req) io_req->dr_done = NULL; goto fnic_device_reset_clean; } spin_lock_irqsave(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_DEV_RST_ISSUED; + CMD_FLAGS(reset_sc) |= FNIC_DEV_RST_ISSUED; spin_unlock_irqrestore(io_lock, flags); /* @@ -2432,16 +2383,16 @@ int fnic_device_reset(struct scsi_cmnd *sc) msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); if (!io_req) { spin_unlock_irqrestore(io_lock, flags); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "io_req is null tag 0x%x sc 0x%p\n", tag, sc); + "io_req is null tag 0x%x sc 0x%p\n", tag, reset_sc); goto fnic_device_reset_end; } io_req->dr_done = NULL; - status = CMD_LR_STATUS(sc); + status = CMD_LR_STATUS(reset_sc); /* * If lun reset not completed, bail out with failed. io_req @@ -2451,16 +2402,16 @@ int fnic_device_reset(struct scsi_cmnd *sc) atomic64_inc(&reset_stats->device_reset_timeouts); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Device reset timed out\n"); - CMD_FLAGS(sc) |= FNIC_DEV_RST_TIMED_OUT; + CMD_FLAGS(reset_sc) |= FNIC_DEV_RST_TIMED_OUT; spin_unlock_irqrestore(io_lock, flags); - int_to_scsilun(sc->device->lun, &fc_lun); + int_to_scsilun(sdev->lun, &fc_lun); /* * Issue abort and terminate on device reset request. * If q'ing of terminate fails, retry it after a delay. */ while (1) { spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEV_RST_TERM_ISSUED) { + if (CMD_FLAGS(reset_sc) & FNIC_DEV_RST_TERM_ISSUED) { spin_unlock_irqrestore(io_lock, flags); break; } @@ -2473,13 +2424,13 @@ int fnic_device_reset(struct scsi_cmnd *sc) msecs_to_jiffies(FNIC_ABT_TERM_DELAY_TIMEOUT)); } else { spin_lock_irqsave(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + CMD_FLAGS(reset_sc) |= FNIC_DEV_RST_TERM_ISSUED; + CMD_STATE(reset_sc) = FNIC_IOREQ_ABTS_PENDING; io_req->abts_done = &tm_done; spin_unlock_irqrestore(io_lock, flags); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Abort and terminate issued on Device reset " - "tag 0x%x sc 0x%p\n", tag, sc); + "tag 0x%x sc 0x%p\n", tag, reset_sc); break; } } @@ -2491,7 +2442,7 @@ int fnic_device_reset(struct scsi_cmnd *sc) msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); break; } else { - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); io_req->abts_done = NULL; goto fnic_device_reset_clean; } @@ -2506,7 +2457,7 @@ int fnic_device_reset(struct scsi_cmnd *sc) FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Device reset completed - failed\n"); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); goto fnic_device_reset_clean; } @@ -2517,7 +2468,7 @@ int fnic_device_reset(struct scsi_cmnd *sc) * the lun reset cmd. If all cmds get cleaned, the lun reset * succeeds */ - if (fnic_clean_pending_aborts(fnic, sc, new_sc)) { + if (fnic_clean_pending_aborts(fnic, reset_sc)) { spin_lock_irqsave(io_lock, flags); io_req = (struct fnic_io_req *)CMD_SP(sc); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, @@ -2528,35 +2479,35 @@ int fnic_device_reset(struct scsi_cmnd *sc) /* Clean lun reset command */ spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(reset_sc); if (io_req) /* Completed, and successful */ ret = SUCCESS; fnic_device_reset_clean: if (io_req) - CMD_SP(sc) = NULL; + CMD_SP(reset_sc) = NULL; spin_unlock_irqrestore(io_lock, flags); if (io_req) { start_time = io_req->start_time; - fnic_release_ioreq_buf(fnic, io_req, sc); + fnic_release_ioreq_buf(fnic, io_req, reset_sc); mempool_free(io_req, fnic->io_req_pool); } fnic_device_reset_end: - FNIC_TRACE(fnic_device_reset, sc->device->host->host_no, - sc->request->tag, sc, + FNIC_TRACE(fnic_device_reset, sdev->host->host_no, + reset_sc->request->tag, reset_sc, jiffies_to_msecs(jiffies - start_time), - 0, ((u64)sc->cmnd[0] << 32 | + 0, ((u64)reset_sc->cmnd[0] << 32 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); - /* free tag if it is allocated */ - if (unlikely(tag_gen_flag)) - fnic_scsi_host_end_tag(fnic, sc); + /* free internal command if it is allocated */ + if (reset_sc) + scsi_put_internal_cmd(reset_sc); FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "Returning from device reset %s\n", -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 05/21] fnic: use scsi_host_busy_iter() to traverse commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (3 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 04/21] fnic: use internal commands Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 06/21] fnic: check for started requests in fnic_wq_copy_cleanup_handler() Hannes Reinecke ` (16 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Use scsi_host_busy_iter() to traverse commands instead of hand-crafted routines walking the command list. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/fnic/fnic_scsi.c | 801 +++++++++++++++++++----------------------- 1 file changed, 356 insertions(+), 445 deletions(-) diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index 98bf21203230..04879ced2835 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -1359,91 +1359,90 @@ int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) return wq_work_done; } -static void fnic_cleanup_io(struct fnic *fnic) +static bool fnic_cleanup_io_iter(struct scsi_cmnd *sc, void *data, + bool reserved) { - int i; + struct fnic *fnic = data; struct fnic_io_req *io_req; unsigned long flags = 0; - struct scsi_cmnd *sc; spinlock_t *io_lock; unsigned long start_time = 0; struct fnic_stats *fnic_stats = &fnic->fnic_stats; - for (i = 0; i < fnic->fnic_max_tag_id; i++) { - io_lock = fnic_io_lock_tag(fnic, i); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, i); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } + io_lock = fnic_io_lock_tag(fnic, sc->request->tag); + spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - !(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { - /* - * We will be here only when FW completes reset - * without sending completions for outstanding ios. - */ - CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; - if (io_req && io_req->dr_done) - complete(io_req->dr_done); - else if (io_req && io_req->abts_done) - complete(io_req->abts_done); - spin_unlock_irqrestore(io_lock, flags); - continue; - } else if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if (!io_req) { - spin_unlock_irqrestore(io_lock, flags); - goto cleanup_scsi_cmd; - } + io_req = (struct fnic_io_req *)CMD_SP(sc); + if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && + !(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { + /* + * We will be here only when FW completes reset + * without sending completions for outstanding ios. + */ + CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; + if (io_req && io_req->dr_done) + complete(io_req->dr_done); + else if (io_req && io_req->abts_done) + complete(io_req->abts_done); + spin_unlock_irqrestore(io_lock, flags); + return true; + } else if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + goto cleanup_scsi_cmd; + } - CMD_SP(sc) = NULL; + CMD_SP(sc) = NULL; - spin_unlock_irqrestore(io_lock, flags); + spin_unlock_irqrestore(io_lock, flags); - /* - * If there is a scsi_cmnd associated with this io_req, then - * free the corresponding state - */ - start_time = io_req->start_time; - fnic_release_ioreq_buf(fnic, io_req, sc); - mempool_free(io_req, fnic->io_req_pool); + /* + * If there is a scsi_cmnd associated with this io_req, then + * free the corresponding state + */ + start_time = io_req->start_time; + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); cleanup_scsi_cmd: - sc->result = DID_TRANSPORT_DISRUPTED << 16; - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "%s: tag:0x%x : sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n", - __func__, sc->request->tag, sc, - (jiffies - start_time)); - - if (atomic64_read(&fnic->io_cmpl_skip)) - atomic64_dec(&fnic->io_cmpl_skip); - else - atomic64_inc(&fnic_stats->io_stats.io_completions); + sc->result = DID_TRANSPORT_DISRUPTED << 16; + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_cleanup_io: tag:0x%x : sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n", + sc->request->tag, sc, (jiffies - start_time)); - /* Complete the command to SCSI */ - if (sc->scsi_done) { - if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) - shost_printk(KERN_ERR, fnic->lport->host, - "Calling done for IO not issued to fw: tag:0x%x sc:0x%p\n", - sc->request->tag, sc); + if (atomic64_read(&fnic->io_cmpl_skip)) + atomic64_dec(&fnic->io_cmpl_skip); + else + atomic64_inc(&fnic_stats->io_stats.io_completions); - FNIC_TRACE(fnic_cleanup_io, - sc->device->host->host_no, i, sc, - jiffies_to_msecs(jiffies - start_time), - 0, ((u64)sc->cmnd[0] << 32 | - (u64)sc->cmnd[2] << 24 | - (u64)sc->cmnd[3] << 16 | - (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), - (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); + /* Complete the command to SCSI */ + if (sc->scsi_done) { + if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) + shost_printk(KERN_ERR, fnic->lport->host, + "Calling done for IO not issued to fw: tag:0x%x sc:0x%p\n", + sc->request->tag, sc); + + FNIC_TRACE(fnic_cleanup_io, + sc->device->host->host_no, sc->request->tag, sc, + jiffies_to_msecs(jiffies - start_time), + 0, ((u64)sc->cmnd[0] << 32 | + (u64)sc->cmnd[2] << 24 | + (u64)sc->cmnd[3] << 16 | + (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), + (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); - sc->scsi_done(sc); - } + sc->scsi_done(sc); } + return true; +} + +static void fnic_cleanup_io(struct fnic *fnic) +{ + scsi_host_busy_iter(fnic->lport->host, + fnic_cleanup_io_iter, fnic); } void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, @@ -1554,143 +1553,140 @@ static inline int fnic_queue_abort_io_req(struct fnic *fnic, int tag, return 0; } -static void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) +struct fnic_rport_abort_io_iter_data { + struct fnic *fnic; + u32 port_id; + int term_cnt; +}; + +static bool fnic_rport_abort_io(struct scsi_cmnd *sc, void *data, bool reserved) { - int tag; - int abt_tag; - int term_cnt = 0; + struct fnic_rport_abort_io_iter_data *iter_data = data; + struct fnic *fnic = iter_data->fnic; + int abt_tag = sc->request->tag; struct fnic_io_req *io_req; spinlock_t *io_lock; unsigned long flags; - struct scsi_cmnd *sc; struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; struct scsi_lun fc_lun; enum fnic_ioreq_state old_ioreq_state; - FNIC_SCSI_DBG(KERN_DEBUG, - fnic->lport->host, - "fnic_rport_exch_reset called portid 0x%06x\n", - port_id); - - if (fnic->in_remove) - return; - - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - abt_tag = tag; - io_lock = fnic_io_lock_tag(fnic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } + io_lock = fnic_io_lock_tag(fnic, abt_tag); + spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); + io_req = (struct fnic_io_req *)CMD_SP(sc); - if (!io_req || io_req->port_id != port_id) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } + if (!io_req || io_req->port_id != iter_data->port_id) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && + (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "fnic_rport_exch_reset dev rst not pending sc 0x%p\n", sc); - spin_unlock_irqrestore(io_lock, flags); - continue; - } + spin_unlock_irqrestore(io_lock, flags); + return true; + } - /* - * Found IO that is still pending with firmware and - * belongs to rport that went away - */ - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if (io_req->abts_done) { - shost_printk(KERN_ERR, fnic->lport->host, + /* + * Found IO that is still pending with firmware and + * belongs to rport that went away + */ + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + if (io_req->abts_done) { + shost_printk(KERN_ERR, fnic->lport->host, "fnic_rport_exch_reset: io_req->abts_done is set " "state is %s\n", fnic_ioreq_state_to_str(CMD_STATE(sc))); - } + } - if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { - shost_printk(KERN_ERR, fnic->lport->host, - "rport_exch_reset " - "IO not yet issued %p tag 0x%x flags " - "%x state %d\n", - sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); - } - old_ioreq_state = CMD_STATE(sc); - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; - CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - atomic64_inc(&reset_stats->device_reset_terminates); - abt_tag = (tag | FNIC_TAG_DEV_RST); - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_rport_exch_reset dev rst sc 0x%p\n", - sc); - } + if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { + shost_printk(KERN_ERR, fnic->lport->host, + "rport_exch_reset " + "IO not yet issued %p tag 0x%x flags " + "%x state %d\n", + sc, abt_tag, CMD_FLAGS(sc), CMD_STATE(sc)); + } + old_ioreq_state = CMD_STATE(sc); + CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { + atomic64_inc(&reset_stats->device_reset_terminates); + abt_tag |= FNIC_TAG_DEV_RST; + } + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_rport_exch_reset dev rst sc 0x%p\n", sc); + BUG_ON(io_req->abts_done); - BUG_ON(io_req->abts_done); + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_rport_reset_exch: Issuing abts\n"); - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_rport_reset_exch: Issuing abts\n"); + spin_unlock_irqrestore(io_lock, flags); + + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); + if (fnic_queue_abort_io_req(fnic, abt_tag, + FCPIO_ITMF_ABT_TASK_TERM, + fc_lun.scsi_lun, io_req)) { + /* + * Revert the cmd state back to old state, if + * it hasn't changed in between. This cmd will get + * aborted later by scsi_eh, or cleaned up during + * lun reset + */ + spin_lock_irqsave(io_lock, flags); + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) + CMD_STATE(sc) = old_ioreq_state; spin_unlock_irqrestore(io_lock, flags); + } else { + spin_lock_irqsave(io_lock, flags); + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) + CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; + else + CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; + spin_unlock_irqrestore(io_lock, flags); + atomic64_inc(&term_stats->terminates); + iter_data->term_cnt++; + } + return true; +} - /* Now queue the abort command to firmware */ - int_to_scsilun(sc->device->lun, &fc_lun); +static void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) +{ + struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; + struct fnic_rport_abort_io_iter_data iter_data = { + .fnic = fnic, + .port_id = port_id, + .term_cnt = 0, + }; - if (fnic_queue_abort_io_req(fnic, abt_tag, - FCPIO_ITMF_ABT_TASK_TERM, - fc_lun.scsi_lun, io_req)) { - /* - * Revert the cmd state back to old state, if - * it hasn't changed in between. This cmd will get - * aborted later by scsi_eh, or cleaned up during - * lun reset - */ - spin_lock_irqsave(io_lock, flags); - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - CMD_STATE(sc) = old_ioreq_state; - spin_unlock_irqrestore(io_lock, flags); - } else { - spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - else - CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; - spin_unlock_irqrestore(io_lock, flags); - atomic64_inc(&term_stats->terminates); - term_cnt++; - } - } - if (term_cnt > atomic64_read(&term_stats->max_terminates)) - atomic64_set(&term_stats->max_terminates, term_cnt); + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "fnic_rport_exch_reset called portid 0x%06x\n", + port_id); + + if (fnic->in_remove) + return; + + scsi_host_busy_iter(fnic->lport->host, fnic_rport_abort_io, + &iter_data); + if (iter_data.term_cnt > atomic64_read(&term_stats->max_terminates)) + atomic64_set(&term_stats->max_terminates, iter_data.term_cnt); } void fnic_terminate_rport_io(struct fc_rport *rport) { - int tag; - int abt_tag; - int term_cnt = 0; - struct fnic_io_req *io_req; - spinlock_t *io_lock; - unsigned long flags; - struct scsi_cmnd *sc; - struct scsi_lun fc_lun; struct fc_rport_libfc_priv *rdata; struct fc_lport *lport; struct fnic *fnic; - struct fc_rport *cmd_rport; - struct reset_stats *reset_stats; - struct terminate_stats *term_stats; - enum fnic_ioreq_state old_ioreq_state; if (!rport) { printk(KERN_ERR "fnic_terminate_rport_io: rport is NULL\n"); @@ -1718,109 +1714,7 @@ void fnic_terminate_rport_io(struct fc_rport *rport) if (fnic->in_remove) return; - reset_stats = &fnic->fnic_stats.reset_stats; - term_stats = &fnic->fnic_stats.term_stats; - - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - abt_tag = tag; - io_lock = fnic_io_lock_tag(fnic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - cmd_rport = starget_to_rport(scsi_target(sc->device)); - if (rport != cmd_rport) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - io_req = (struct fnic_io_req *)CMD_SP(sc); - - if (!io_req || rport != cmd_rport) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_terminate_rport_io dev rst not pending sc 0x%p\n", - sc); - spin_unlock_irqrestore(io_lock, flags); - continue; - } - /* - * Found IO that is still pending with firmware and - * belongs to rport that went away - */ - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if (io_req->abts_done) { - shost_printk(KERN_ERR, fnic->lport->host, - "fnic_terminate_rport_io: io_req->abts_done is set " - "state is %s\n", - fnic_ioreq_state_to_str(CMD_STATE(sc))); - } - if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "fnic_terminate_rport_io " - "IO not yet issued %p tag 0x%x flags " - "%x state %d\n", - sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); - } - old_ioreq_state = CMD_STATE(sc); - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; - CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - atomic64_inc(&reset_stats->device_reset_terminates); - abt_tag = (tag | FNIC_TAG_DEV_RST); - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "fnic_terminate_rport_io dev rst sc 0x%p\n", sc); - } - - BUG_ON(io_req->abts_done); - - FNIC_SCSI_DBG(KERN_DEBUG, - fnic->lport->host, - "fnic_terminate_rport_io: Issuing abts\n"); - - spin_unlock_irqrestore(io_lock, flags); - - /* Now queue the abort command to firmware */ - int_to_scsilun(sc->device->lun, &fc_lun); - - if (fnic_queue_abort_io_req(fnic, abt_tag, - FCPIO_ITMF_ABT_TASK_TERM, - fc_lun.scsi_lun, io_req)) { - /* - * Revert the cmd state back to old state, if - * it hasn't changed in between. This cmd will get - * aborted later by scsi_eh, or cleaned up during - * lun reset - */ - spin_lock_irqsave(io_lock, flags); - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - CMD_STATE(sc) = old_ioreq_state; - spin_unlock_irqrestore(io_lock, flags); - } else { - spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - else - CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; - spin_unlock_irqrestore(io_lock, flags); - atomic64_inc(&term_stats->terminates); - term_cnt++; - } - } - if (term_cnt > atomic64_read(&term_stats->max_terminates)) - atomic64_set(&term_stats->max_terminates, term_cnt); - + fnic_rport_exch_reset(fnic, rport->port_id); } /* @@ -2115,163 +2009,174 @@ static inline int fnic_queue_dr_io_req(struct fnic *fnic, return ret; } -/* - * Clean up any pending aborts on the lun - * For each outstanding IO on this lun, whose abort is not completed by fw, - * issue a local abort. Wait for abort to complete. Return 0 if all commands - * successfully aborted, 1 otherwise - */ -static int fnic_clean_pending_aborts(struct fnic *fnic, - struct scsi_cmnd *lr_sc) +struct fnic_pending_aborts_iter_data { + struct fnic *fnic; + struct scsi_device *lun_dev; + int ret; +}; + +static bool fnic_pending_aborts_iter(struct scsi_cmnd *sc, + void *data, bool reserved) { - int tag, abt_tag; + struct fnic_pending_aborts_iter_data *iter_data = data; + struct fnic *fnic = iter_data->fnic; + struct scsi_device *lun_dev = iter_data->lun_dev; + int abt_tag = sc->request->tag; struct fnic_io_req *io_req; spinlock_t *io_lock; unsigned long flags; - int ret = 0; - struct scsi_cmnd *sc; struct scsi_lun fc_lun; - struct scsi_device *lun_dev = lr_sc->device; DECLARE_COMPLETION_ONSTACK(tm_done); enum fnic_ioreq_state old_ioreq_state; - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - io_lock = fnic_io_lock_tag(fnic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(fnic->lport->host, tag); - /* - * ignore this lun reset cmd if issued using new SC - * or cmds that do not belong to this lun - */ - if (!sc || sc == lr_sc || sc->device != lun_dev) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - io_req = (struct fnic_io_req *)CMD_SP(sc); - - if (!io_req || sc->device != lun_dev) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - /* - * Found IO that is still pending with firmware and - * belongs to the LUN that we are resetting - */ - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "Found IO in %s on lun\n", - fnic_ioreq_state_to_str(CMD_STATE(sc))); + if (sc->device != lun_dev) + return true; + if (reserved) + return true; - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && - (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "%s dev rst not pending sc 0x%p\n", __func__, - sc); - spin_unlock_irqrestore(io_lock, flags); - continue; - } + io_lock = fnic_io_lock_tag(fnic, abt_tag); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - if (io_req->abts_done) - shost_printk(KERN_ERR, fnic->lport->host, - "%s: io_req->abts_done is set state is %s\n", - __func__, fnic_ioreq_state_to_str(CMD_STATE(sc))); - old_ioreq_state = CMD_STATE(sc); - /* - * Any pending IO issued prior to reset is expected to be - * in abts pending state, if not we need to set - * FNIC_IOREQ_ABTS_PENDING to indicate the IO is abort pending. - * When IO is completed, the IO will be handed over and - * handled in this function. - */ - CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + /* + * Found IO that is still pending with firmware and + * belongs to the LUN that we are resetting + */ + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Found IO in %s on lun\n", + fnic_ioreq_state_to_str(CMD_STATE(sc))); - BUG_ON(io_req->abts_done); + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && + (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { + FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, + "%s dev rst not pending sc 0x%p\n", __func__, + sc); + spin_unlock_irqrestore(io_lock, flags); + return true; + } - abt_tag = tag; - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { - abt_tag |= FNIC_TAG_DEV_RST; - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "%s: dev rst sc 0x%p\n", __func__, sc); - } + if (io_req->abts_done) + shost_printk(KERN_ERR, fnic->lport->host, + "%s: io_req->abts_done is set state is %s\n", + __func__, fnic_ioreq_state_to_str(CMD_STATE(sc))); + old_ioreq_state = CMD_STATE(sc); + /* + * Any pending IO issued prior to reset is expected to be + * in abts pending state, if not we need to set + * FNIC_IOREQ_ABTS_PENDING to indicate the IO is abort pending. + * When IO is completed, the IO will be handed over and + * handled in this function. + */ + CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; - CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; - io_req->abts_done = &tm_done; - spin_unlock_irqrestore(io_lock, flags); + BUG_ON(io_req->abts_done); - /* Now queue the abort command to firmware */ - int_to_scsilun(sc->device->lun, &fc_lun); + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { + abt_tag |= FNIC_TAG_DEV_RST; + FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, + "%s: dev rst sc 0x%p\n", __func__, sc); + } - if (fnic_queue_abort_io_req(fnic, abt_tag, - FCPIO_ITMF_ABT_TASK_TERM, - fc_lun.scsi_lun, io_req)) { - spin_lock_irqsave(io_lock, flags); - io_req = (struct fnic_io_req *)CMD_SP(sc); - if (io_req) - io_req->abts_done = NULL; - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - CMD_STATE(sc) = old_ioreq_state; - spin_unlock_irqrestore(io_lock, flags); - ret = 1; - goto clean_pending_aborts_end; - } else { - spin_lock_irqsave(io_lock, flags); - if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) - CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; - spin_unlock_irqrestore(io_lock, flags); - } - CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + io_req->abts_done = &tm_done; + spin_unlock_irqrestore(io_lock, flags); - wait_for_completion_timeout(&tm_done, - msecs_to_jiffies - (fnic->config.ed_tov)); + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); - /* Recheck cmd state to check if it is now aborted */ + if (fnic_queue_abort_io_req(fnic, abt_tag, + FCPIO_ITMF_ABT_TASK_TERM, + fc_lun.scsi_lun, io_req)) { spin_lock_irqsave(io_lock, flags); io_req = (struct fnic_io_req *)CMD_SP(sc); - if (!io_req) { - spin_unlock_irqrestore(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; - continue; - } + if (io_req) + io_req->abts_done = NULL; + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) + CMD_STATE(sc) = old_ioreq_state; + spin_unlock_irqrestore(io_lock, flags); + return false; + } else { + spin_lock_irqsave(io_lock, flags); + if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) + CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; + spin_unlock_irqrestore(io_lock, flags); + } + CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; - io_req->abts_done = NULL; + wait_for_completion_timeout(&tm_done, msecs_to_jiffies + (fnic->config.ed_tov)); - /* if abort is still pending with fw, fail */ - if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { - spin_unlock_irqrestore(io_lock, flags); - CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; - ret = 1; - goto clean_pending_aborts_end; - } - CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; + /* Recheck cmd state to check if it is now aborted */ + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; + return true; + } - /* original sc used for lr is handled by dev reset code */ - if (sc != lr_sc) - CMD_SP(sc) = NULL; + io_req->abts_done = NULL; + + /* if abort is still pending with fw, fail */ + if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { spin_unlock_irqrestore(io_lock, flags); + CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; + iter_data->ret = FAILED; + return false; + } + CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; - /* original sc used for lr is handled by dev reset code */ - if (sc != lr_sc) { - fnic_release_ioreq_buf(fnic, io_req, sc); - mempool_free(io_req, fnic->io_req_pool); - } + /* original sc used for lr is handled by dev reset code */ + CMD_SP(sc) = NULL; + spin_unlock_irqrestore(io_lock, flags); - /* - * Any IO is returned during reset, it needs to call scsi_done - * to return the scsi_cmnd to upper layer. - */ - if (sc->scsi_done) { - /* Set result to let upper SCSI layer retry */ - sc->result = DID_RESET << 16; - sc->scsi_done(sc); - } + /* original sc used for lr is handled by dev reset code */ + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + + /* + * Any IO is returned during reset, it needs to call scsi_done + * to return the scsi_cmnd to upper layer. + */ + if (sc->scsi_done) { + /* Set result to let upper SCSI layer retry */ + sc->result = DID_RESET << 16; + sc->scsi_done(sc); } + return true; +} + +/* + * Clean up any pending aborts on the lun + * For each outstanding IO on this lun, whose abort is not completed by fw, + * issue a local abort. Wait for abort to complete. Return 0 if all commands + * successfully aborted, 1 otherwise + */ +static int fnic_clean_pending_aborts(struct fnic *fnic, + struct scsi_cmnd *lr_sc) +{ + int ret = SUCCESS; + struct fnic_pending_aborts_iter_data iter_data = { + .fnic = fnic, + .lun_dev = lr_sc->device, + .ret = SUCCESS, + }; + + scsi_host_busy_iter(fnic->lport->host, + fnic_pending_aborts_iter, &iter_data); + if (iter_data.ret == FAILED) { + ret = iter_data.ret; + goto clean_pending_aborts_end; + } schedule_timeout(msecs_to_jiffies(2 * fnic->config.ed_tov)); /* walk again to check, if IOs are still pending in fw */ @@ -2725,6 +2630,43 @@ void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) } +static bool fnic_abts_pending_iter(struct scsi_cmnd *sc, void *data, + bool reserved) +{ + struct fnic_pending_aborts_iter_data *iter_data = data; + struct fnic *fnic = iter_data->fnic; + int cmd_state; + struct fnic_io_req *io_req; + spinlock_t *io_lock; + unsigned long flags; + + if (iter_data->lun_dev && sc->device != iter_data->lun_dev) + return true; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } + + /* + * Found IO that is still pending with firmware and + * belongs to the LUN that we are resetting + */ + FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, + "Found IO in %s on lun\n", + fnic_ioreq_state_to_str(CMD_STATE(sc))); + cmd_state = CMD_STATE(sc); + spin_unlock_irqrestore(io_lock, flags); + if (cmd_state == FNIC_IOREQ_ABTS_PENDING) + iter_data->ret = 1; + + return iter_data->ret ? false : true; +} + /* * fnic_is_abts_pending() is a helper function that * walks through tag map to check if there is any IOs pending,if there is one, @@ -2734,49 +2676,18 @@ void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) */ int fnic_is_abts_pending(struct fnic *fnic, struct scsi_cmnd *lr_sc) { - int tag; - struct fnic_io_req *io_req; - spinlock_t *io_lock; - unsigned long flags; - int ret = 0; - struct scsi_cmnd *sc; - struct scsi_device *lun_dev = NULL; + struct fnic_pending_aborts_iter_data iter_data = { + .fnic = fnic, + .lun_dev = NULL, + .ret = 0, + }; if (lr_sc) - lun_dev = lr_sc->device; + iter_data.lun_dev = lr_sc->device; /* walk again to check, if IOs are still pending in fw */ - for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { - sc = scsi_host_find_tag(fnic->lport->host, tag); - /* - * ignore this lun reset cmd or cmds that do not belong to - * this lun - */ - if (!sc || (lr_sc && (sc->device != lun_dev || sc == lr_sc))) - continue; - - io_lock = fnic_io_lock_hash(fnic, sc); - spin_lock_irqsave(io_lock, flags); - - io_req = (struct fnic_io_req *)CMD_SP(sc); + scsi_host_busy_iter(fnic->lport->host, + fnic_abts_pending_iter, &iter_data); - if (!io_req || sc->device != lun_dev) { - spin_unlock_irqrestore(io_lock, flags); - continue; - } - - /* - * Found IO that is still pending with firmware and - * belongs to the LUN that we are resetting - */ - FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, - "Found IO in %s on lun\n", - fnic_ioreq_state_to_str(CMD_STATE(sc))); - - if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) - ret = 1; - spin_unlock_irqrestore(io_lock, flags); - } - - return ret; + return iter_data.ret; } -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 06/21] fnic: check for started requests in fnic_wq_copy_cleanup_handler() 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (4 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 05/21] fnic: use scsi_host_busy_iter() to traverse commands Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 07/21] scsi: use real inquiry data when initialising devices Hannes Reinecke ` (15 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke fnic_wq_copy_cleanup_handler() is using scsi_host_find_tag() to map id to a scsi command. However, as per discussion on the mailinglist scsi_host_find_tag() might return a non-started request, so we need to check the returned command with blk_mq_request_started() to avoid the function tripping over a non-initialized command. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/fnic/fnic_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index 04879ced2835..13db2181d3fd 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -1464,7 +1464,7 @@ void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, return; sc = scsi_host_find_tag(fnic->lport->host, id); - if (!sc) + if (!sc || !blk_mq_request_started(sc->request)) return; io_lock = fnic_io_lock_hash(fnic, sc); -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 07/21] scsi: use real inquiry data when initialising devices 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (5 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 06/21] fnic: check for started requests in fnic_wq_copy_cleanup_handler() Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 08/21] scsi: Use dummy inquiry data for the host device Hannes Reinecke ` (14 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Use dummy inquiry data when initialising devices and not just some 'nullnullnull' string. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/scsi_scan.c | 34 +++++++++++++++++++++++++--------- 1 file changed, 25 insertions(+), 9 deletions(-) diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index f2437a7570ce..871c7609c159 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -81,7 +81,27 @@ #define SCSI_SCAN_TARGET_PRESENT 1 #define SCSI_SCAN_LUN_PRESENT 2 -static const char *scsi_null_device_strs = "nullnullnullnull"; +/* + * Dummy inquiry for virtual LUNs: + * + * standard INQUIRY: [qualifier indicates no connected LU] + * PQual=1 Device_type=31 RMB=0 LU_CONG=0 version=0x05 [SPC-3] + * [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=2 + * SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0] + * EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0 + * [RelAdr=0] WBus16=0 Sync=0 [Linked=0] [TranDis=0] CmdQue=0 + * length=36 (0x24) Peripheral device type: no physical device on this lu + * Vendor identification: LINUX + * Product identification: VIRTUALLUN + * Product revision level: 1.0 + */ +static const unsigned char scsi_null_inquiry[36] = { + 0x3f, 0x00, 0x05, 0x02, 0x1f, 0x00, 0x00, 0x00, + 0x4c, 0x49, 0x4e, 0x55, 0x58, 0x20, 0x20, 0x20, + 0x56, 0x49, 0x52, 0x54, 0x55, 0x41, 0x4c, 0x4c, + 0x55, 0x4e, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, + 0x31, 0x2e, 0x30, 0x20 +}; #define MAX_SCSI_LUNS 512 @@ -224,9 +244,10 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, if (!sdev) goto out; - sdev->vendor = scsi_null_device_strs; - sdev->model = scsi_null_device_strs; - sdev->rev = scsi_null_device_strs; + sdev->type = scsi_null_inquiry[0] & 0x1f; + sdev->vendor = scsi_null_inquiry + 8; + sdev->model = scsi_null_inquiry + 16; + sdev->rev = scsi_null_inquiry + 32; sdev->host = shost; sdev->queue_ramp_up_period = SCSI_DEFAULT_RAMP_UP_PERIOD; sdev->id = starget->id; @@ -253,11 +274,6 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, * slave_configure function */ sdev->max_device_blocked = SCSI_DEFAULT_DEVICE_BLOCKED; - /* - * Some low level driver could use device->type - */ - sdev->type = -1; - /* * Assume that the device will have handshaking problems, * and then fix this field later if it turns out it -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 08/21] scsi: Use dummy inquiry data for the host device 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (6 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 07/21] scsi: use real inquiry data when initialising devices Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 09/21] scsi: revamp host device handling Hannes Reinecke ` (13 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Attach the dummy inquiry data to the scsi host device and use it to check if any given device is a scsi host device. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/scsi_scan.c | 17 +++++++++++++++-- drivers/scsi/scsi_sysfs.c | 3 ++- include/scsi/scsi_host.h | 7 ++++--- 3 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 871c7609c159..34470605fd0a 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -1920,9 +1920,11 @@ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) goto out; sdev = scsi_alloc_sdev(starget, 0, NULL); - if (sdev) + if (sdev) { sdev->borken = 0; - else + sdev->inquiry = (unsigned char *)scsi_null_inquiry; + sdev->inquiry_len = sizeof(scsi_null_inquiry); + } else scsi_target_reap(starget); put_device(&starget->dev); out: @@ -1947,3 +1949,14 @@ void scsi_free_host_dev(struct scsi_device *sdev) } EXPORT_SYMBOL(scsi_free_host_dev); +/** + * scsi_device_is_host_dev - Check if a scsi device is a host device + * @sdev: SCSI device to test + * + * Returns: true if @sdev is a host device, false otherwise + */ +bool scsi_device_is_host_dev(struct scsi_device *sdev) +{ + return ((const unsigned char *)sdev->inquiry == scsi_null_inquiry); +} +EXPORT_SYMBOL_GPL(scsi_device_is_host_dev); diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 163dbcb741c1..eeed2fcf9510 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -485,7 +485,8 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work) kfree_rcu(vpd_pg80, rcu); if (vpd_pg89) kfree_rcu(vpd_pg89, rcu); - kfree(sdev->inquiry); + if (!scsi_device_is_host_dev(sdev)) + kfree(sdev->inquiry); kfree(sdev); if (parent) diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 46ef8cccc982..21af5b1ce2b1 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -775,14 +775,15 @@ void scsi_host_busy_iter(struct Scsi_Host *, struct class_container; /* - * These two functions are used to allocate and free a pseudo device - * which will connect to the host adapter itself rather than any - * physical device. You must deallocate when you are done with the + * These three functions are used to allocate, free, and test for + * a pseudo device which will connect to the host adapter itself rather + * than any physical device. You must deallocate when you are done with the * thing. This physical pseudo-device isn't real and won't be available * from any high-level drivers. */ extern void scsi_free_host_dev(struct scsi_device *); extern struct scsi_device *scsi_get_host_dev(struct Scsi_Host *); +bool scsi_device_is_host_dev(struct scsi_device *); /* * DIF defines the exchange of protection information between -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 09/21] scsi: revamp host device handling 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (7 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 08/21] scsi: Use dummy inquiry data for the host device Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 10/21] snic: use reserved commands Hannes Reinecke ` (12 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Ensure that the host device is excluded from scanning by setting the BLIST_NOLUN flag, and avoid it being presented in sysfs. Also move the device id from using the ->this_id value as target id (which is a bit odd as it's typically is set to -1 anyway) to using ->max_channel + 1 as the channel number and '0' as the target id. With that the host device is now handled like any other scsi device, which means we can drop the scsi_put_host_dev() function and let scsi_forget_host() etc handle the deallocation. We only need to ensure that the host device is deallocated last is the driver might need it to send commands during teardown. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/scsi_devinfo.c | 1 + drivers/scsi/scsi_scan.c | 55 ++++++++++++++++++++++++--------------------- include/scsi/scsi_host.h | 13 ++++++----- 3 files changed, 37 insertions(+), 32 deletions(-) diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index eed31021e788..9d55bfbd347d 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -195,6 +195,7 @@ static struct { {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, + {"LINUX", "VIRTUALLUN", NULL, BLIST_NOLUN}, {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 34470605fd0a..a24919fbd93d 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -1094,6 +1094,15 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget, if (!sdev) goto out; + if (scsi_device_is_host_dev(sdev)) { + bflags = scsi_get_device_flags(sdev, + sdev->vendor, + sdev->model); + if (bflagsp) + *bflagsp = bflags; + return SCSI_SCAN_LUN_PRESENT; + } + result = kmalloc(result_len, GFP_KERNEL | ((shost->unchecked_isa_dma) ? __GFP_DMA : 0)); if (!result) @@ -1712,6 +1721,9 @@ static void scsi_sysfs_add_devices(struct Scsi_Host *shost) /* If device is already visible, skip adding it to sysfs */ if (sdev->is_visible) continue; + /* Host devices should never be visible in sysfs */ + if (scsi_device_is_host_dev(sdev)) + continue; if (!scsi_host_scan_allowed(shost) || scsi_sysfs_add_sdev(sdev) != 0) __scsi_remove_device(sdev); @@ -1875,12 +1887,16 @@ EXPORT_SYMBOL(scsi_scan_host); void scsi_forget_host(struct Scsi_Host *shost) { - struct scsi_device *sdev; + struct scsi_device *sdev, *host_sdev = NULL; unsigned long flags; restart: spin_lock_irqsave(shost->host_lock, flags); list_for_each_entry(sdev, &shost->__devices, siblings) { + if (scsi_device_is_host_dev(sdev)) { + host_sdev = sdev; + continue; + } if (sdev->sdev_state == SDEV_DEL) continue; spin_unlock_irqrestore(shost->host_lock, flags); @@ -1888,10 +1904,13 @@ void scsi_forget_host(struct Scsi_Host *shost) goto restart; } spin_unlock_irqrestore(shost->host_lock, flags); + /* Remove host device last, might be needed to send commands */ + if (host_sdev) + __scsi_remove_device(host_sdev); } /** - * scsi_get_host_dev - Create a scsi_device that points to the host adapter itself + * scsi_get_host_dev - Create a virtual scsi_device to the host adapter * @shost: Host that needs a scsi_device * * Lock status: None assumed. @@ -1899,13 +1918,12 @@ void scsi_forget_host(struct Scsi_Host *shost) * Returns: The scsi_device or NULL * * Notes: - * Attach a single scsi_device to the Scsi_Host - this should - * be made to look like a "pseudo-device" that points to the - * HA itself. - * - * Note - this device is not accessible from any high-level - * drivers (including generics), which is probably not - * optimal. We can add hooks later to attach. + * Attach a single scsi_device to the Scsi_Host. The primary aim + * for this device is to serve as a container from which valid + * scsi commands can be allocated from. Each scsi command will carry + * an unused/free command tag, which then can be used by the LLDD to + * send internal or passthrough commands without having to find a + * valid command tag internally. */ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) { @@ -1915,7 +1933,8 @@ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) mutex_lock(&shost->scan_mutex); if (!scsi_host_scan_allowed(shost)) goto out; - starget = scsi_alloc_target(&shost->shost_gendev, 0, shost->this_id); + starget = scsi_alloc_target(&shost->shost_gendev, + shost->max_channel + 1, 0); if (!starget) goto out; @@ -1933,22 +1952,6 @@ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost) } EXPORT_SYMBOL(scsi_get_host_dev); -/** - * scsi_free_host_dev - Free a scsi_device that points to the host adapter itself - * @sdev: Host device to be freed - * - * Lock status: None assumed. - * - * Returns: Nothing - */ -void scsi_free_host_dev(struct scsi_device *sdev) -{ - BUG_ON(sdev->id != sdev->host->this_id); - - __scsi_remove_device(sdev); -} -EXPORT_SYMBOL(scsi_free_host_dev); - /** * scsi_device_is_host_dev - Check if a scsi device is a host device * @sdev: SCSI device to test diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 21af5b1ce2b1..4919a66565d6 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -775,14 +775,15 @@ void scsi_host_busy_iter(struct Scsi_Host *, struct class_container; /* - * These three functions are used to allocate, free, and test for - * a pseudo device which will connect to the host adapter itself rather - * than any physical device. You must deallocate when you are done with the - * thing. This physical pseudo-device isn't real and won't be available + * These functions are used to allocate and test a pseudo device + * which will refer to the host adapter itself rather than any + * physical device. The device will be deallocated together with + * all other scsi devices, so there is no need to have a separate + * function to free it. + * This device will not show up in sysfs and won't be available * from any high-level drivers. */ -extern void scsi_free_host_dev(struct scsi_device *); -extern struct scsi_device *scsi_get_host_dev(struct Scsi_Host *); +struct scsi_device *scsi_get_host_dev(struct Scsi_Host *); bool scsi_device_is_host_dev(struct scsi_device *); /* -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 10/21] snic: use reserved commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (8 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 09/21] scsi: revamp host device handling Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-08 11:08 ` John Garry 2020-07-03 13:01 ` [PATCH 11/21] snic: use tagset iter for traversing commands Hannes Reinecke ` (11 subsequent siblings) 21 siblings, 1 reply; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Allocate a host device and use internal commands for host and device reset. This allows us to remove the special handling of host and bus reset commands. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/snic/snic.h | 4 +- drivers/scsi/snic/snic_main.c | 7 ++ drivers/scsi/snic/snic_scsi.c | 159 +++++++++++++++++------------------------- 3 files changed, 73 insertions(+), 97 deletions(-) diff --git a/drivers/scsi/snic/snic.h b/drivers/scsi/snic/snic.h index f4c666285bba..5a2428033190 100644 --- a/drivers/scsi/snic/snic.h +++ b/drivers/scsi/snic/snic.h @@ -59,7 +59,6 @@ */ #define SNIC_TAG_ABORT BIT(30) /* Tag indicating abort */ #define SNIC_TAG_DEV_RST BIT(29) /* Tag for device reset */ -#define SNIC_TAG_IOCTL_DEV_RST BIT(28) /* Tag for User Device Reset */ #define SNIC_TAG_MASK (BIT(24) - 1) /* Mask for lookup */ #define SNIC_NO_TAG -1 @@ -278,6 +277,7 @@ struct snic { /* Scsi Host info */ struct Scsi_Host *shost; + struct scsi_device *shost_dev; /* vnic related structures */ struct vnic_dev_bar bar0; @@ -380,7 +380,7 @@ int snic_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); int snic_abort_cmd(struct scsi_cmnd *); int snic_device_reset(struct scsi_cmnd *); int snic_host_reset(struct scsi_cmnd *); -int snic_reset(struct Scsi_Host *, struct scsi_cmnd *); +int snic_reset(struct Scsi_Host *); void snic_shutdown_scsi_cleanup(struct snic *); diff --git a/drivers/scsi/snic/snic_main.c b/drivers/scsi/snic/snic_main.c index 14f4ce665e58..ce0e7ab4ef1d 100644 --- a/drivers/scsi/snic/snic_main.c +++ b/drivers/scsi/snic/snic_main.c @@ -303,6 +303,7 @@ static int snic_add_host(struct Scsi_Host *shost, struct pci_dev *pdev) { int ret = 0; + struct snic *snic = shost_priv(shost); ret = scsi_add_host(shost, &pdev->dev); if (ret) { @@ -313,6 +314,12 @@ snic_add_host(struct Scsi_Host *shost, struct pci_dev *pdev) return ret; } + snic->shost_dev = scsi_get_host_dev(shost); + if (!snic->shost_dev) { + SNIC_HOST_ERR(shost, + "snic: scsi_get_virtual_dev failed\n"); + return -ENOMEM; + } SNIC_BUG_ON(shost->work_q != NULL); snprintf(shost->work_q_name, sizeof(shost->work_q_name), "scsi_wq_%d", shost->host_no); diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index b3650c989ed4..8aa9ae75fe89 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -77,7 +77,7 @@ static const char * const snic_io_status_str[] = { [SNIC_STAT_FATAL_ERROR] = "SNIC_STAT_FATAL_ERROR", }; -static void snic_scsi_cleanup(struct snic *, int); +static void snic_scsi_cleanup(struct snic *); const char * snic_state_to_str(unsigned int state) @@ -867,7 +867,6 @@ snic_process_itmf_cmpl(struct snic *snic, break; case SNIC_TAG_DEV_RST: - case SNIC_TAG_DEV_RST | SNIC_TAG_IOCTL_DEV_RST: snic_proc_dr_cmpl_locked(snic, fwreq, cmpl_stat, cmnd_id, sc); spin_unlock_irqrestore(io_lock, flags); ret = 0; @@ -920,7 +919,6 @@ static void snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) { struct scsi_cmnd *sc = NULL; - struct snic_req_info *rqi = NULL; struct snic_itmf_cmpl *itmf_cmpl = NULL; ulong ctx; u32 cmnd_id; @@ -938,14 +936,6 @@ snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) "Itmf_cmpl: nterm %u , flags 0x%x\n", le32_to_cpu(itmf_cmpl->nterminated), itmf_cmpl->flags); - /* spl case, dev reset issued through ioctl */ - if (cmnd_id & SNIC_TAG_IOCTL_DEV_RST) { - rqi = (struct snic_req_info *) ctx; - sc = rqi->sc; - - goto ioctl_dev_rst; - } - if ((cmnd_id & SNIC_TAG_MASK) >= snic->max_tag_id) { SNIC_HOST_ERR(snic->shost, "Itmf_cmpl: Tag 0x%x out of Range,HdrStat %s\n", @@ -958,7 +948,6 @@ snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) sc = scsi_host_find_tag(snic->shost, cmnd_id & SNIC_TAG_MASK); WARN_ON_ONCE(!sc); -ioctl_dev_rst: if (!sc) { atomic64_inc(&snic->s_stats.io.sc_null); SNIC_HOST_ERR(snic->shost, @@ -974,13 +963,13 @@ snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) static void -snic_hba_reset_scsi_cleanup(struct snic *snic, struct scsi_cmnd *sc) +snic_hba_reset_scsi_cleanup(struct snic *snic) { struct snic_stats *st = &snic->s_stats; long act_ios = 0, act_fwreqs = 0; SNIC_SCSI_DBG(snic->shost, "HBA Reset scsi cleanup.\n"); - snic_scsi_cleanup(snic, snic_cmd_tag(sc)); + snic_scsi_cleanup(snic); /* Update stats on pending IOs */ act_ios = atomic64_read(&st->io.active); @@ -1021,17 +1010,6 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) "reset_cmpl: type = %x, hdr_stat = %x, cmnd_id = %x, hid = %x, ctx = %lx\n", typ, hdr_stat, cmnd_id, hid, ctx); - /* spl case, host reset issued through ioctl */ - if (cmnd_id == SCSI_NO_TAG) { - rqi = (struct snic_req_info *) ctx; - SNIC_HOST_INFO(snic->shost, - "reset_cmpl:Tag %d ctx %lx cmpl stat %s\n", - cmnd_id, ctx, snic_io_status_to_str(hdr_stat)); - sc = rqi->sc; - - goto ioctl_hba_rst; - } - if (cmnd_id >= snic->max_tag_id) { SNIC_HOST_ERR(snic->shost, "reset_cmpl: Tag 0x%x out of Range,HdrStat %s\n", @@ -1042,7 +1020,6 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) } sc = scsi_host_find_tag(snic->shost, cmnd_id); -ioctl_hba_rst: if (!sc) { atomic64_inc(&snic->s_stats.io.sc_null); SNIC_HOST_ERR(snic->shost, @@ -1089,7 +1066,7 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) spin_unlock_irqrestore(io_lock, flags); /* scsi cleanup */ - snic_hba_reset_scsi_cleanup(snic, sc); + snic_hba_reset_scsi_cleanup(snic); SNIC_BUG_ON(snic_get_state(snic) != SNIC_OFFLINE && snic_get_state(snic) != SNIC_FWRESET); @@ -1359,7 +1336,7 @@ snic_issue_tm_req(struct snic *snic, int tmf) { struct snic_host_req *tmreq = NULL; - int req_id = 0, tag = snic_cmd_tag(sc); + int tag = snic_cmd_tag(sc); int ret = 0; if (snic_get_state(snic) == SNIC_FWRESET) @@ -1372,13 +1349,10 @@ snic_issue_tm_req(struct snic *snic, tmf, rqi, tag); - if (tmf == SNIC_ITMF_LUN_RESET) { + if (tmf == SNIC_ITMF_LUN_RESET) tmreq = snic_dr_req_init(snic, rqi); - req_id = SCSI_NO_TAG; - } else { + else tmreq = snic_abort_req_init(snic, rqi); - req_id = tag; - } if (!tmreq) { ret = -ENOMEM; @@ -1386,7 +1360,7 @@ snic_issue_tm_req(struct snic *snic, goto tmreq_err; } - ret = snic_queue_itmf_req(snic, tmreq, sc, tmf, req_id); + ret = snic_queue_itmf_req(snic, tmreq, sc, tmf, tag); if (ret) goto tmreq_err; @@ -1395,12 +1369,12 @@ snic_issue_tm_req(struct snic *snic, tmreq_err: if (ret) { SNIC_HOST_ERR(snic->shost, - "issu_tmreq: Queing ITMF(%d) Req, sc %p rqi %p req_id %d tag %x fails err = %d\n", - tmf, sc, rqi, req_id, tag, ret); + "issu_tmreq: Queing ITMF(%d) Req, sc %p rqi %p tag %x fails err = %d\n", + tmf, sc, rqi, tag, ret); } else { SNIC_SCSI_DBG(snic->shost, - "issu_tmreq: Queuing ITMF(%d) Req, sc %p, rqi %p, req_id %d tag %x - Success.\n", - tmf, sc, rqi, req_id, tag); + "issu_tmreq: Queuing ITMF(%d) Req, sc %p, rqi %p, tag %x - Success.\n", + tmf, sc, rqi, tag); } atomic_dec(&snic->ios_inflight); @@ -2150,7 +2124,7 @@ snic_device_reset(struct scsi_cmnd *sc) struct Scsi_Host *shost = sc->device->host; struct snic *snic = shost_priv(shost); struct snic_req_info *rqi = NULL; - int tag = snic_cmd_tag(sc); + struct scsi_cmnd *reset_sc = NULL; int start_time = jiffies; int ret = FAILED; int dr_supp = 0; @@ -2174,42 +2148,41 @@ snic_device_reset(struct scsi_cmnd *sc) goto dev_rst_end; } - /* There is no tag when lun reset is issue through ioctl. */ - if (unlikely(tag <= SNIC_NO_TAG)) { - SNIC_HOST_INFO(snic->shost, - "Devrst: LUN Reset Recvd thru IOCTL.\n"); + reset_sc = scsi_get_internal_cmd(sc->device, DMA_NONE, REQ_NOWAIT); + if (!reset_sc) + goto dev_rst_end; - rqi = snic_req_init(snic, 0); - if (!rqi) - goto dev_rst_end; + rqi = snic_req_init(snic, 0); + if (!rqi) + goto dev_rst_end; - memset(scsi_cmd_priv(sc), 0, - sizeof(struct snic_internal_io_state)); - CMD_SP(sc) = (char *)rqi; - CMD_FLAGS(sc) = SNIC_NO_FLAGS; + memset(scsi_cmd_priv(reset_sc), 0, + sizeof(struct snic_internal_io_state)); + CMD_SP(reset_sc) = (char *)rqi; + CMD_FLAGS(reset_sc) = SNIC_NO_FLAGS; - /* Add special tag for dr coming from user spc */ - rqi->tm_tag = SNIC_TAG_IOCTL_DEV_RST; - rqi->sc = sc; - } + rqi->sc = reset_sc; - ret = snic_send_dr_and_wait(snic, sc); + ret = snic_send_dr_and_wait(snic, reset_sc); if (ret) { SNIC_HOST_ERR(snic->shost, "Devrst: IO w/ Tag %x Failed w/ err = %d\n", - tag, ret); + snic_cmd_tag(reset_sc), ret); - snic_unlink_and_release_req(snic, sc, 0); + snic_unlink_and_release_req(snic, reset_sc, 0); goto dev_rst_end; } - ret = snic_dr_finish(snic, sc); + ret = snic_dr_finish(snic, reset_sc); dev_rst_end: - SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, - jiffies_to_msecs(jiffies - start_time), - 0, SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc)); + if (reset_sc) { + SNIC_TRC(snic->shost->host_no, snic_cmd_tag(reset_sc), (ulong) reset_sc, + jiffies_to_msecs(jiffies - start_time), + 0, SNIC_TRC_CMD(reset_sc), SNIC_TRC_CMD_STATE_FLAGS(reset_sc)); + scsi_put_internal_cmd(reset_sc); + } SNIC_SCSI_DBG(snic->shost, "Devrst: Returning from Device Reset : %s\n", @@ -2229,10 +2202,11 @@ snic_device_reset(struct scsi_cmnd *sc) * snic_issue_hba_reset : Queues FW Reset Request. */ static int -snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) +snic_issue_hba_reset(struct snic *snic) { struct snic_req_info *rqi = NULL; struct snic_host_req *req = NULL; + struct scsi_cmnd *reset_sc; spinlock_t *io_lock = NULL; DECLARE_COMPLETION_ONSTACK(wait); unsigned long flags; @@ -2241,30 +2215,31 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) rqi = snic_req_init(snic, 0); if (!rqi) { ret = -ENOMEM; - goto hba_rst_end; } - if (snic_cmd_tag(sc) == SCSI_NO_TAG) { - memset(scsi_cmd_priv(sc), 0, - sizeof(struct snic_internal_io_state)); - SNIC_HOST_INFO(snic->shost, "issu_hr:Host reset thru ioctl.\n"); - rqi->sc = sc; + reset_sc = scsi_get_internal_cmd(snic->shost_dev, + DMA_NONE, REQ_NOWAIT); + if (!reset_sc) { + ret = -EBUSY; + goto hba_rst_end_put; } - + memset(scsi_cmd_priv(reset_sc), 0, + sizeof(struct snic_internal_io_state)); + rqi->sc = reset_sc; req = rqi_to_req(rqi); - io_lock = snic_io_lock_hash(snic, sc); + io_lock = snic_io_lock_hash(snic, reset_sc); spin_lock_irqsave(io_lock, flags); - SNIC_BUG_ON(CMD_SP(sc) != NULL); - CMD_STATE(sc) = SNIC_IOREQ_PENDING; - CMD_SP(sc) = (char *) rqi; - CMD_FLAGS(sc) |= SNIC_IO_INITIALIZED; + SNIC_BUG_ON(CMD_SP(reset_sc) != NULL); + CMD_STATE(reset_sc) = SNIC_IOREQ_PENDING; + CMD_SP(reset_sc) = (char *) rqi; + CMD_FLAGS(reset_sc) |= SNIC_IO_INITIALIZED; snic->remove_wait = &wait; spin_unlock_irqrestore(io_lock, flags); /* Initialize Request */ - snic_io_hdr_enc(&req->hdr, SNIC_REQ_HBA_RESET, 0, snic_cmd_tag(sc), + snic_io_hdr_enc(&req->hdr, SNIC_REQ_HBA_RESET, 0, snic_cmd_tag(reset_sc), snic->config.hid, 0, (ulong) rqi); req->u.reset.flags = 0; @@ -2279,7 +2254,7 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) } spin_lock_irqsave(io_lock, flags); - CMD_FLAGS(sc) |= SNIC_HOST_RESET_ISSUED; + CMD_FLAGS(reset_sc) |= SNIC_HOST_RESET_ISSUED; spin_unlock_irqrestore(io_lock, flags); atomic64_inc(&snic->s_stats.reset.hba_resets); SNIC_HOST_INFO(snic->shost, "Queued HBA Reset Successfully.\n"); @@ -2296,13 +2271,14 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) spin_lock_irqsave(io_lock, flags); snic->remove_wait = NULL; - rqi = (struct snic_req_info *) CMD_SP(sc); - CMD_SP(sc) = NULL; + rqi = (struct snic_req_info *) CMD_SP(reset_sc); + CMD_SP(reset_sc) = NULL; spin_unlock_irqrestore(io_lock, flags); if (rqi) snic_req_free(snic, rqi); + scsi_put_internal_cmd(reset_sc); ret = 0; return ret; @@ -2310,10 +2286,13 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) hba_rst_err: spin_lock_irqsave(io_lock, flags); snic->remove_wait = NULL; - rqi = (struct snic_req_info *) CMD_SP(sc); - CMD_SP(sc) = NULL; + rqi = (struct snic_req_info *) CMD_SP(reset_sc); + CMD_SP(reset_sc) = NULL; spin_unlock_irqrestore(io_lock, flags); +hba_rst_end_put: + if (reset_sc) + scsi_put_internal_cmd(reset_sc); if (rqi) snic_req_free(snic, rqi); @@ -2326,7 +2305,7 @@ snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc) } /* end of snic_issue_hba_reset */ int -snic_reset(struct Scsi_Host *shost, struct scsi_cmnd *sc) +snic_reset(struct Scsi_Host *shost) { struct snic *snic = shost_priv(shost); enum snic_state sv_state; @@ -2355,7 +2334,7 @@ snic_reset(struct Scsi_Host *shost, struct scsi_cmnd *sc) while (atomic_read(&snic->ios_inflight)) schedule_timeout(msecs_to_jiffies(1)); - ret = snic_issue_hba_reset(snic, sc); + ret = snic_issue_hba_reset(snic); if (ret) { SNIC_HOST_ERR(shost, "reset:Host Reset Failed w/ err %d.\n", @@ -2394,7 +2373,7 @@ snic_host_reset(struct scsi_cmnd *sc) sc, sc->cmnd[0], sc->request, snic_cmd_tag(sc), CMD_FLAGS(sc)); - ret = snic_reset(shost, sc); + ret = snic_reset(shost); SNIC_TRC(shost->host_no, snic_cmd_tag(sc), (ulong) sc, jiffies_to_msecs(jiffies - start_time), @@ -2436,7 +2415,7 @@ snic_cmpl_pending_tmreq(struct snic *snic, struct scsi_cmnd *sc) * snic_scsi_cleanup: Walks through tag map and releases the reqs */ static void -snic_scsi_cleanup(struct snic *snic, int ex_tag) +snic_scsi_cleanup(struct snic *snic) { struct snic_req_info *rqi = NULL; struct scsi_cmnd *sc = NULL; @@ -2448,19 +2427,9 @@ snic_scsi_cleanup(struct snic *snic, int ex_tag) SNIC_SCSI_DBG(snic->shost, "sc_clean: scsi cleanup.\n"); for (tag = 0; tag < snic->max_tag_id; tag++) { - /* Skip ex_tag */ - if (tag == ex_tag) - continue; - io_lock = snic_io_lock_tag(snic, tag); spin_lock_irqsave(io_lock, flags); sc = scsi_host_find_tag(snic->shost, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - - continue; - } - if (unlikely(snic_tmreq_pending(sc))) { /* * When FW Completes reset w/o sending completions @@ -2520,7 +2489,7 @@ snic_shutdown_scsi_cleanup(struct snic *snic) { SNIC_HOST_INFO(snic->shost, "Shutdown time SCSI Cleanup.\n"); - snic_scsi_cleanup(snic, SCSI_NO_TAG); + snic_scsi_cleanup(snic); } /* end of snic_shutdown_scsi_cleanup */ /* -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* Re: [PATCH 10/21] snic: use reserved commands 2020-07-03 13:01 ` [PATCH 10/21] snic: use reserved commands Hannes Reinecke @ 2020-07-08 11:08 ` John Garry 2020-07-08 11:18 ` Hannes Reinecke 0 siblings, 1 reply; 38+ messages in thread From: John Garry @ 2020-07-08 11:08 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi On 03/07/2020 14:01, Hannes Reinecke wrote: > ret = scsi_add_host(shost, &pdev->dev); > if (ret) { > @@ -313,6 +314,12 @@ snic_add_host(struct Scsi_Host *shost, struct pci_dev *pdev) > return ret; > } > > + snic->shost_dev = scsi_get_host_dev(shost); > + if (!snic->shost_dev) { > + SNIC_HOST_ERR(shost, > + "snic: scsi_get_virtual_dev failed\n"); > + return -ENOMEM; > + } > SNIC_BUG_ON(shost->work_q != NULL); > snprintf(shost->work_q_name, sizeof(shost->work_q_name), "scsi_wq_%d", > shost->host_no); do we need scsi_free_host_dev() for error paths and teardown paths? That applies to fnic as well. Or is this done in the scsi_host teardown (I didn't check)? > diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c > index b3650c989ed4..8aa9ae75fe89 100644 > --- a/drivers/scsi/snic/snic_scsi.c > +++ b/drivers/scsi/snic/snic_scsi.c > @@ -77,7 +77,7 @@ static const char * const snic_io_status_str[] = { > [SNIC_STAT_FATAL_ERROR] = "SNIC_STAT_FATAL_ERROR", > }; > > -static void snic_scsi_cleanup(struct snic *, int); > +static void snic_scsi_cleanup(struct snic *); > > const char * > snic_state_to_str(unsigned int state) > @@ -867,7 +867,6 @@ snic_process_itmf_cmpl(struct snic *snic, > break; > ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCH 10/21] snic: use reserved commands 2020-07-08 11:08 ` John Garry @ 2020-07-08 11:18 ` Hannes Reinecke 0 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-08 11:18 UTC (permalink / raw) To: John Garry, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi On 7/8/20 1:08 PM, John Garry wrote: > On 03/07/2020 14:01, Hannes Reinecke wrote: >> ret = scsi_add_host(shost, &pdev->dev); >> if (ret) { >> @@ -313,6 +314,12 @@ snic_add_host(struct Scsi_Host *shost, struct >> pci_dev *pdev) >> return ret; >> } >> + snic->shost_dev = scsi_get_host_dev(shost); >> + if (!snic->shost_dev) { >> + SNIC_HOST_ERR(shost, >> + "snic: scsi_get_virtual_dev failed\n"); >> + return -ENOMEM; >> + } >> SNIC_BUG_ON(shost->work_q != NULL); >> snprintf(shost->work_q_name, sizeof(shost->work_q_name), >> "scsi_wq_%d", >> shost->host_no); > > do we need scsi_free_host_dev() for error paths and teardown paths? That > applies to fnic as well. Or is this done in the scsi_host teardown (I > didn't check)? > This is done in scsi_host teardown. With this patchset host device appear just like normal SCSI devices, so host teardown will remove those, too. That's the gist of those patches to revamp scsi host device handling. Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), GF: Felix Imendörffer ^ permalink raw reply [flat|nested] 38+ messages in thread
* [PATCH 11/21] snic: use tagset iter for traversing commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (9 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 10/21] snic: use reserved commands Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 12/21] snic: check for started requests in snic_hba_reset_cmpl_handler() Hannes Reinecke ` (10 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Use the tagset iter to traverse active commands during device and hba reset. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/snic/snic_scsi.c | 366 +++++++++++++++++++++--------------------- 1 file changed, 187 insertions(+), 179 deletions(-) diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index 8aa9ae75fe89..9f9a497beb5c 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -1645,90 +1645,97 @@ snic_abort_cmd(struct scsi_cmnd *sc) return ret; } +struct snic_cmd_pending_iter_data { + struct snic *snic; + struct scsi_device *sdev; + int ret; +}; - -static int -snic_is_abts_pending(struct snic *snic, struct scsi_cmnd *lr_sc) +static bool +snic_is_abts_pending_iter(struct scsi_cmnd *sc, void *data, bool reserved) { + struct snic_cmd_pending_iter_data *iter_data = data; struct snic_req_info *rqi = NULL; - struct scsi_cmnd *sc = NULL; - struct scsi_device *lr_sdev = NULL; spinlock_t *io_lock = NULL; - u32 tag; unsigned long flags; - if (lr_sc) - lr_sdev = lr_sc->device; + if (reserved) + return true; - /* walk through the tag map, an dcheck if IOs are still pending in fw*/ - for (tag = 0; tag < snic->max_tag_id; tag++) { - io_lock = snic_io_lock_tag(snic, tag); - - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); - - if (!sc || (lr_sc && (sc->device != lr_sdev || sc == lr_sc))) { - spin_unlock_irqrestore(io_lock, flags); + if (iter_data->sdev && iter_data->sdev != sc->device) + return true; - continue; - } + io_lock = snic_io_lock_hash(iter_data->snic, sc); + spin_lock_irqsave(io_lock, flags); - rqi = (struct snic_req_info *) CMD_SP(sc); - if (!rqi) { - spin_unlock_irqrestore(io_lock, flags); + rqi = (struct snic_req_info *) CMD_SP(sc); + if (!rqi) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - continue; - } + /* + * Found IO that is still pending w/ firmware and belongs to + * the LUN that is under reset, if lr_sc != NULL + */ + SNIC_SCSI_DBG(iter_data->snic->shost, "Found IO in %s on LUN\n", + snic_ioreq_state_to_str(CMD_STATE(sc))); - /* - * Found IO that is still pending w/ firmware and belongs to - * the LUN that is under reset, if lr_sc != NULL - */ - SNIC_SCSI_DBG(snic->shost, "Found IO in %s on LUN\n", - snic_ioreq_state_to_str(CMD_STATE(sc))); + if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) + iter_data->ret = 1; + spin_unlock_irqrestore(io_lock, flags); - if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) { - spin_unlock_irqrestore(io_lock, flags); + return true; +} - return 1; - } +static int +snic_is_abts_pending(struct snic *snic, struct scsi_device *lr_sdev) +{ + struct snic_cmd_pending_iter_data iter_data = { + .snic = snic, + .sdev = lr_sdev, + .ret = 0, + }; - spin_unlock_irqrestore(io_lock, flags); - } + /* walk through the tag map, an dcheck if IOs are still pending in fw*/ + scsi_host_busy_iter(snic->shost, + snic_is_abts_pending_iter, &iter_data); - return 0; + return iter_data.ret; } /* end of snic_is_abts_pending */ -static int -snic_dr_clean_single_req(struct snic *snic, - u32 tag, - struct scsi_device *lr_sdev) +static bool +snic_dr_clean_single_req(struct scsi_cmnd *sc, void *data, bool reserved) { struct snic_req_info *rqi = NULL; struct snic_tgt *tgt = NULL; - struct scsi_cmnd *sc = NULL; spinlock_t *io_lock = NULL; u32 sv_state = 0, tmf = 0; DECLARE_COMPLETION_ONSTACK(tm_done); unsigned long flags; int ret = 0; + struct snic_cmd_pending_iter_data *iter_data = data; + struct snic *snic = iter_data->snic; - io_lock = snic_io_lock_tag(snic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); + if (reserved) + return true; - /* Ignore Cmd that don't belong to Lun Reset device */ - if (!sc || sc->device != lr_sdev) - goto skip_clean; + if (sc->device != iter_data->sdev) + return true; + io_lock = snic_io_lock_hash(snic, sc); + spin_lock_irqsave(io_lock, flags); rqi = (struct snic_req_info *) CMD_SP(sc); - - if (!rqi) - goto skip_clean; + if (!rqi) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } - if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) - goto skip_clean; + if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + return true; + } if ((CMD_FLAGS(sc) & SNIC_DEVICE_RESET) && @@ -1737,8 +1744,8 @@ snic_dr_clean_single_req(struct snic *snic, SNIC_SCSI_DBG(snic->shost, "clean_single_req: devrst is not pending sc 0x%p\n", sc); - - goto skip_clean; + spin_unlock_irqrestore(io_lock, flags); + return true; } SNIC_SCSI_DBG(snic->shost, @@ -1781,7 +1788,7 @@ snic_dr_clean_single_req(struct snic *snic, if (ret) { SNIC_HOST_ERR(snic->shost, "clean_single_req_err:sc %p, tag %d abt failed. tm_tag %d flags 0x%llx\n", - sc, tag, rqi->tm_tag, CMD_FLAGS(sc)); + sc, snic_cmd_tag(sc), rqi->tm_tag, CMD_FLAGS(sc)); spin_lock_irqsave(io_lock, flags); rqi = (struct snic_req_info *) CMD_SP(sc); @@ -1792,8 +1799,9 @@ snic_dr_clean_single_req(struct snic *snic, if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) CMD_STATE(sc) = sv_state; - ret = 1; - goto skip_clean; + iter_data->ret = 1; + spin_unlock_irqrestore(io_lock, flags); + return false; } spin_lock_irqsave(io_lock, flags); @@ -1810,7 +1818,8 @@ snic_dr_clean_single_req(struct snic *snic, rqi = (struct snic_req_info *) CMD_SP(sc); if (!rqi) { CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_REQ_NULL; - goto skip_clean; + spin_unlock_irqrestore(io_lock, flags); + return true;; } rqi->abts_done = NULL; @@ -1818,14 +1827,13 @@ snic_dr_clean_single_req(struct snic *snic, if (CMD_ABTS_STATUS(sc) == SNIC_INVALID_CODE) { SNIC_HOST_ERR(snic->shost, "clean_single_req_err:sc %p tag %d abt still pending w/ fw, tm_tag %d flags 0x%llx\n", - sc, tag, rqi->tm_tag, CMD_FLAGS(sc)); + sc, snic_cmd_tag(sc), rqi->tm_tag, CMD_FLAGS(sc)); CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_DONE; - ret = 1; - - goto skip_clean; + iter_data->ret = 1; + spin_unlock_irqrestore(io_lock, flags); + return false; } - CMD_STATE(sc) = SNIC_IOREQ_ABTS_COMPLETE; CMD_SP(sc) = NULL; spin_unlock_irqrestore(io_lock, flags); @@ -1835,39 +1843,31 @@ snic_dr_clean_single_req(struct snic *snic, sc->result = (DID_ERROR << 16); sc->scsi_done(sc); - ret = 0; - - return ret; - -skip_clean: - spin_unlock_irqrestore(io_lock, flags); - - return ret; + return true; } /* end of snic_dr_clean_single_req */ static int -snic_dr_clean_pending_req(struct snic *snic, struct scsi_cmnd *lr_sc) +snic_dr_clean_pending_req(struct snic *snic, struct scsi_device *lr_sdev) { - struct scsi_device *lr_sdev = lr_sc->device; - u32 tag = 0; int ret = FAILED; + struct snic_cmd_pending_iter_data iter_data = { + .snic = snic, + .sdev = lr_sdev, + .ret = 0, + }; - for (tag = 0; tag < snic->max_tag_id; tag++) { - if (tag == snic_cmd_tag(lr_sc)) - continue; + scsi_host_busy_iter(snic->shost, + snic_dr_clean_single_req, &iter_data); + if (iter_data.ret) { + SNIC_HOST_ERR(snic->shost, "clean_err = %d\n", iter_data.ret); - ret = snic_dr_clean_single_req(snic, tag, lr_sdev); - if (ret) { - SNIC_HOST_ERR(snic->shost, "clean_err:tag = %d\n", tag); - - goto clean_err; - } + goto clean_err; } schedule_timeout(msecs_to_jiffies(100)); /* Walk through all the cmds and check abts status. */ - if (snic_is_abts_pending(snic, lr_sc)) { + if (snic_is_abts_pending(snic, lr_sdev)) { ret = FAILED; goto clean_err; @@ -1954,7 +1954,7 @@ snic_dr_finish(struct snic *snic, struct scsi_cmnd *sc) * succeeds. */ - ret = snic_dr_clean_pending_req(snic, sc); + ret = snic_dr_clean_pending_req(snic, sc->device); if (ret) { spin_lock_irqsave(io_lock, flags); SNIC_SCSI_DBG(snic->shost, @@ -2411,77 +2411,79 @@ snic_cmpl_pending_tmreq(struct snic *snic, struct scsi_cmnd *sc) complete(rqi->abts_done); } -/* - * snic_scsi_cleanup: Walks through tag map and releases the reqs - */ -static void -snic_scsi_cleanup(struct snic *snic) +static bool +snic_scsi_cleanup_iter(struct scsi_cmnd *sc, void *data, bool rsvd) { + struct snic *snic = data; struct snic_req_info *rqi = NULL; - struct scsi_cmnd *sc = NULL; spinlock_t *io_lock = NULL; unsigned long flags; - int tag; + int tag = snic_cmd_tag(sc); u64 st_time = 0; - SNIC_SCSI_DBG(snic->shost, "sc_clean: scsi cleanup.\n"); - - for (tag = 0; tag < snic->max_tag_id; tag++) { - io_lock = snic_io_lock_tag(snic, tag); - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); - if (unlikely(snic_tmreq_pending(sc))) { - /* - * When FW Completes reset w/o sending completions - * for outstanding ios. - */ - snic_cmpl_pending_tmreq(snic, sc); - spin_unlock_irqrestore(io_lock, flags); - - continue; - } - - rqi = (struct snic_req_info *) CMD_SP(sc); - if (!rqi) { - spin_unlock_irqrestore(io_lock, flags); + io_lock = snic_io_lock_hash(snic, sc); + spin_lock_irqsave(io_lock, flags); + if (unlikely(snic_tmreq_pending(sc))) { + /* + * When FW Completes reset w/o sending completions + * for outstanding ios. + */ + snic_cmpl_pending_tmreq(snic, sc); + spin_unlock_irqrestore(io_lock, flags); - goto cleanup; - } + return true; + } + rqi = (struct snic_req_info *) CMD_SP(sc); + if (!rqi) { + spin_unlock_irqrestore(io_lock, flags); + goto cleanup; + } - SNIC_SCSI_DBG(snic->shost, - "sc_clean: sc %p, rqi %p, tag %d flags 0x%llx\n", - sc, rqi, tag, CMD_FLAGS(sc)); + SNIC_SCSI_DBG(snic->shost, + "sc_clean: sc %p, rqi %p, tag %d flags 0x%llx\n", + sc, rqi, tag, CMD_FLAGS(sc)); - CMD_SP(sc) = NULL; - CMD_FLAGS(sc) |= SNIC_SCSI_CLEANUP; - spin_unlock_irqrestore(io_lock, flags); - st_time = rqi->start_time; + CMD_SP(sc) = NULL; + CMD_FLAGS(sc) |= SNIC_SCSI_CLEANUP; + spin_unlock_irqrestore(io_lock, flags); + st_time = rqi->start_time; - SNIC_HOST_INFO(snic->shost, - "sc_clean: Releasing rqi %p : flags 0x%llx\n", - rqi, CMD_FLAGS(sc)); + SNIC_HOST_INFO(snic->shost, + "sc_clean: Releasing rqi %p : flags 0x%llx\n", + rqi, CMD_FLAGS(sc)); - snic_release_req_buf(snic, rqi, sc); + snic_release_req_buf(snic, rqi, sc); cleanup: - sc->result = DID_TRANSPORT_DISRUPTED << 16; - SNIC_HOST_INFO(snic->shost, - "sc_clean: DID_TRANSPORT_DISRUPTED for sc %p, Tag %d flags 0x%llx rqi %p duration %u msecs\n", - sc, sc->request->tag, CMD_FLAGS(sc), rqi, - jiffies_to_msecs(jiffies - st_time)); + sc->result = DID_TRANSPORT_DISRUPTED << 16; + SNIC_HOST_INFO(snic->shost, + "sc_clean: DID_TRANSPORT_DISRUPTED for sc %p, Tag %d flags 0x%llx rqi %p duration %u msecs\n", + sc, tag, CMD_FLAGS(sc), rqi, + jiffies_to_msecs(jiffies - st_time)); - /* Update IO stats */ - snic_stats_update_io_cmpl(&snic->s_stats); + /* Update IO stats */ + snic_stats_update_io_cmpl(&snic->s_stats); - if (sc->scsi_done) { - SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, - jiffies_to_msecs(jiffies - st_time), 0, - SNIC_TRC_CMD(sc), - SNIC_TRC_CMD_STATE_FLAGS(sc)); + if (sc->scsi_done) { + SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, + jiffies_to_msecs(jiffies - st_time), 0, + SNIC_TRC_CMD(sc), + SNIC_TRC_CMD_STATE_FLAGS(sc)); - sc->scsi_done(sc); - } + sc->scsi_done(sc); } + return true; +} + +/* + * snic_scsi_cleanup: Walks through tag map and releases the reqs + */ +static void +snic_scsi_cleanup(struct snic *snic) +{ + SNIC_SCSI_DBG(snic->shost, "sc_clean: scsi cleanup.\n"); + + scsi_host_busy_iter(snic->shost, snic_scsi_cleanup_iter, snic); } /* end of snic_scsi_cleanup */ void @@ -2578,6 +2580,40 @@ snic_internal_abort_io(struct snic *snic, struct scsi_cmnd *sc, int tmf) return ret; } /* end of snic_internal_abort_io */ +struct snic_tgt_scsi_abort_io_iter_data { + struct snic *snic; + struct snic_tgt *tgt; + int tmf; + int abt_cnt; +}; + +static bool +snic_tgt_scsi_abort_io_iter(struct scsi_cmnd *sc, void *data, bool reserved) +{ + struct snic_tgt_scsi_abort_io_iter_data *iter_data = data; + struct snic_tgt *sc_tgt = NULL; + int ret; + + if (reserved) + return true; + + sc_tgt = starget_to_tgt(scsi_target(sc->device)); + if (sc_tgt != iter_data->tgt) + return true; + + ret = snic_internal_abort_io(iter_data->snic, sc, iter_data->tmf); + if (ret < 0) { + SNIC_HOST_ERR(iter_data->snic->shost, + "tgt_abt_io: Tag %x, Failed w err = %d\n", + snic_cmd_tag(sc), ret); + return true; + } + + if (ret == SUCCESS) + iter_data->abt_cnt++; + return true; +} + /* * snic_tgt_scsi_abort_io : called by snic_tgt_del */ @@ -2585,11 +2621,10 @@ int snic_tgt_scsi_abort_io(struct snic_tgt *tgt) { struct snic *snic = NULL; - struct scsi_cmnd *sc = NULL; - struct snic_tgt *sc_tgt = NULL; - spinlock_t *io_lock = NULL; - unsigned long flags; - int ret = 0, tag, abt_cnt = 0, tmf = 0; + struct snic_tgt_scsi_abort_io_iter_data iter_data = { + .tgt = tgt, + .abt_cnt = 0, + }; if (!tgt) return -1; @@ -2598,43 +2633,16 @@ snic_tgt_scsi_abort_io(struct snic_tgt *tgt) SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: Cleaning Pending IOs.\n"); if (tgt->tdata.typ == SNIC_TGT_DAS) - tmf = SNIC_ITMF_ABTS_TASK; + iter_data.tmf = SNIC_ITMF_ABTS_TASK; else - tmf = SNIC_ITMF_ABTS_TASK_TERM; - - for (tag = 0; tag < snic->max_tag_id; tag++) { - io_lock = snic_io_lock_tag(snic, tag); - - spin_lock_irqsave(io_lock, flags); - sc = scsi_host_find_tag(snic->shost, tag); - if (!sc) { - spin_unlock_irqrestore(io_lock, flags); - - continue; - } + iter_data.tmf = SNIC_ITMF_ABTS_TASK_TERM; + iter_data.snic = snic; - sc_tgt = starget_to_tgt(scsi_target(sc->device)); - if (sc_tgt != tgt) { - spin_unlock_irqrestore(io_lock, flags); - - continue; - } - spin_unlock_irqrestore(io_lock, flags); - - ret = snic_internal_abort_io(snic, sc, tmf); - if (ret < 0) { - SNIC_HOST_ERR(snic->shost, - "tgt_abt_io: Tag %x, Failed w err = %d\n", - tag, ret); - - continue; - } - - if (ret == SUCCESS) - abt_cnt++; - } + scsi_host_busy_iter(snic->shost, + snic_tgt_scsi_abort_io_iter, &iter_data); - SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: abt_cnt = %d\n", abt_cnt); + SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: abt_cnt = %d\n", + iter_data.abt_cnt); return 0; } /* end of snic_tgt_scsi_abort_io */ -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 12/21] snic: check for started requests in snic_hba_reset_cmpl_handler() 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (10 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 11/21] snic: use tagset iter for traversing commands Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 13/21] scsi: implement reserved command handling Hannes Reinecke ` (9 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke snic_hba_reset_cmpl_handler() is using scsi_host_find_tag() to map id to a scsi command. However, as per discussion on the mailinglist scsi_host_find_tag() might return a non-started request, so we need to check the returned command with blk_mq_request_started() to avoid the function tripping over a non-initialized command. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/snic/snic_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index 9f9a497beb5c..b000a926e194 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -1020,7 +1020,7 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) } sc = scsi_host_find_tag(snic->shost, cmnd_id); - if (!sc) { + if (!sc || !blk_mq_request_started(sc->request)) { atomic64_inc(&snic->s_stats.io.sc_null); SNIC_HOST_ERR(snic->shost, "reset_cmpl: sc is NULL - Hdr Stat %s Tag 0x%x\n", -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 13/21] scsi: implement reserved command handling 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (11 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 12/21] snic: check for started requests in snic_hba_reset_cmpl_handler() Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-08 9:39 ` John Garry 2020-07-03 13:01 ` [PATCH 14/21] hpsa: move hpsa_hba_inquiry after scsi_add_host() Hannes Reinecke ` (8 subsequent siblings) 21 siblings, 1 reply; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Quite some drivers are using management commands internally, which typically use the same hardware tag pool (ie they are being allocated from the same hardware resources) as the 'normal' I/O commands. These commands are set aside before allocating the block-mq tag bitmap, so they'll never show up as busy in the tag map. The block-layer, OTOH, already has 'reserved_tags' to handle precisely this situation. So this patch adds a new field 'nr_reserved_cmds' to the SCSI host template to instruct the block layer to set aside a tag space for these management commands by using reserved tags. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/hosts.c | 3 +++ drivers/scsi/scsi_lib.c | 10 +++++++++- include/scsi/scsi_host.h | 22 +++++++++++++++++++++- 3 files changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 7ec91c3a66ca..db91b045a4ce 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -466,6 +466,9 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) if (sht->virt_boundary_mask) shost->virt_boundary_mask = sht->virt_boundary_mask; + if (sht->nr_reserved_cmds) + shost->nr_reserved_cmds = sht->nr_reserved_cmds; + device_initialize(&shost->shost_gendev); dev_set_name(&shost->shost_gendev, "host%d", shost->host_no); shost->shost_gendev.bus = &scsi_bus_type; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 1d5c1b9a1203..1362f4f17dfd 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1887,7 +1887,9 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost) else tag_set->ops = &scsi_mq_ops_no_commit; tag_set->nr_hw_queues = shost->nr_hw_queues ? : 1; - tag_set->queue_depth = shost->can_queue; + tag_set->queue_depth = + shost->can_queue + shost->nr_reserved_cmds; + tag_set->reserved_tags = shost->nr_reserved_cmds; tag_set->cmd_size = cmd_size; tag_set->numa_node = NUMA_NO_NODE; tag_set->flags = BLK_MQ_F_SHOULD_MERGE; @@ -1910,6 +1912,9 @@ void scsi_mq_destroy_tags(struct Scsi_Host *shost) * @op_flags: request allocation flags * * Allocates a SCSI command for internal LLDD use. + * If 'nr_reserved_commands' is spectified by the host the + * command will be allocated from the reserved tag pool; + * otherwise the normal tag pool will be used. */ struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, enum dma_data_direction data_direction, int op_flags) @@ -1919,6 +1924,9 @@ struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, blk_mq_req_flags_t flags = 0; unsigned int op = REQ_INTERNAL | op_flags; + if (sdev->host->nr_reserved_cmds) + flags = BLK_MQ_REQ_RESERVED; + op |= (data_direction == DMA_TO_DEVICE) ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; rq = blk_mq_alloc_request(sdev->request_queue, op, flags); diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 4919a66565d6..c4d0d26c880e 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -342,10 +342,19 @@ struct scsi_host_template { /* * This determines if we will use a non-interrupt driven * or an interrupt driven scheme. It is set to the maximum number - * of simultaneous commands a single hw queue in HBA will accept. + * of simultaneous commands a single hw queue in HBA will accept + * excluding internal commands. */ int can_queue; + /* + * This determines how many commands the HBA will set aside + * for internal commands. This number will be added to + * @can_queue to calcumate the maximum number of simultaneous + * commands sent to the host. + */ + int nr_reserved_cmds; + /* * In many instances, especially where disconnect / reconnect are * supported, our host also has an ID on the SCSI bus. If this is @@ -590,6 +599,11 @@ struct Scsi_Host { unsigned short max_cmd_len; int this_id; + + /* + * Number of commands this host can handle at the same time. + * This excludes reserved commands as specified by nr_reserved_cmds. + */ int can_queue; short cmd_per_lun; short unsigned int sg_tablesize; @@ -606,6 +620,12 @@ struct Scsi_Host { * is nr_hw_queues * can_queue. */ unsigned nr_hw_queues; + + /* + * Number of reserved commands to allocate, if any. + */ + unsigned nr_reserved_cmds; + unsigned active_mode:2; unsigned unchecked_isa_dma:1; -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* Re: [PATCH 13/21] scsi: implement reserved command handling 2020-07-03 13:01 ` [PATCH 13/21] scsi: implement reserved command handling Hannes Reinecke @ 2020-07-08 9:39 ` John Garry 0 siblings, 0 replies; 38+ messages in thread From: John Garry @ 2020-07-08 9:39 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi On 03/07/2020 14:01, Hannes Reinecke wrote: > Quite some drivers are using management commands internally, which > typically use the same hardware tag pool (ie they are being allocated > from the same hardware resources) as the 'normal' I/O commands. > These commands are set aside before allocating the block-mq tag bitmap, > so they'll never show up as busy in the tag map. > The block-layer, OTOH, already has 'reserved_tags' to handle precisely > this situation. > So this patch adds a new field 'nr_reserved_cmds' to the SCSI host > template to instruct the block layer to set aside a tag space for these > management commands by using reserved tags. > Apart from (a good few) comments: Reviewed-by: John Garry <john.garry@huawei.com> > Signed-off-by: Hannes Reinecke <hare@suse.de> > --- > drivers/scsi/hosts.c | 3 +++ > drivers/scsi/scsi_lib.c | 10 +++++++++- > include/scsi/scsi_host.h | 22 +++++++++++++++++++++- > 3 files changed, 33 insertions(+), 2 deletions(-) > > diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c > index 7ec91c3a66ca..db91b045a4ce 100644 > --- a/drivers/scsi/hosts.c > +++ b/drivers/scsi/hosts.c > @@ -466,6 +466,9 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) > if (sht->virt_boundary_mask) > shost->virt_boundary_mask = sht->virt_boundary_mask; > > + if (sht->nr_reserved_cmds) > + shost->nr_reserved_cmds = sht->nr_reserved_cmds; > + > device_initialize(&shost->shost_gendev); > dev_set_name(&shost->shost_gendev, "host%d", shost->host_no); > shost->shost_gendev.bus = &scsi_bus_type; > diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c > index 1d5c1b9a1203..1362f4f17dfd 100644 > --- a/drivers/scsi/scsi_lib.c > +++ b/drivers/scsi/scsi_lib.c > @@ -1887,7 +1887,9 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost) > else > tag_set->ops = &scsi_mq_ops_no_commit; > tag_set->nr_hw_queues = shost->nr_hw_queues ? : 1; > - tag_set->queue_depth = shost->can_queue; > + tag_set->queue_depth = > + shost->can_queue + shost->nr_reserved_cmds; I think that this can fit on a single line without exceeding 80 characters > + tag_set->reserved_tags = shost->nr_reserved_cmds; > tag_set->cmd_size = cmd_size; > tag_set->numa_node = NUMA_NO_NODE; > tag_set->flags = BLK_MQ_F_SHOULD_MERGE; > @@ -1910,6 +1912,9 @@ void scsi_mq_destroy_tags(struct Scsi_Host *shost) > * @op_flags: request allocation flags > * > * Allocates a SCSI command for internal LLDD use. > + * If 'nr_reserved_commands' is spectified by the host the again, please check spellings > + * command will be allocated from the reserved tag pool; > + * otherwise the normal tag pool will be used. > */ > struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, > enum dma_data_direction data_direction, int op_flags) > @@ -1919,6 +1924,9 @@ struct scsi_cmnd *scsi_get_internal_cmd(struct scsi_device *sdev, > blk_mq_req_flags_t flags = 0; > unsigned int op = REQ_INTERNAL | op_flags; > > + if (sdev->host->nr_reserved_cmds) > + flags = BLK_MQ_REQ_RESERVED; Previously I mentioned that '|=' is nicer - not sure if it was missed or dismissed, so mentioning it again just in case > + > op |= (data_direction == DMA_TO_DEVICE) ? > REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN; > rq = blk_mq_alloc_request(sdev->request_queue, op, flags); > diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h > index 4919a66565d6..c4d0d26c880e 100644 > --- a/include/scsi/scsi_host.h > +++ b/include/scsi/scsi_host.h > @@ -342,10 +342,19 @@ struct scsi_host_template { > /* > * This determines if we will use a non-interrupt driven > * or an interrupt driven scheme. It is set to the maximum number > - * of simultaneous commands a single hw queue in HBA will accept. > + * of simultaneous commands a single hw queue in HBA will accept > + * excluding internal commands. > */ > int can_queue; > > + /* > + * This determines how many commands the HBA will set aside > + * for internal commands. This number will be added to > + * @can_queue to calcumate the maximum number of simultaneous check spelling of calculate > + * commands sent to the host. > + */ > + int nr_reserved_cmds; We have can_queue file in the scsi_host sysfs folder - I wonder if it is also worth adding a file for this? > + > /* ^ permalink raw reply [flat|nested] 38+ messages in thread
* [PATCH 14/21] hpsa: move hpsa_hba_inquiry after scsi_add_host() 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (12 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 13/21] scsi: implement reserved command handling Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 15/21] hpsa: use reserved commands Hannes Reinecke ` (7 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Move hpsa_hba_inquiry to after scsi_add_host() so that the host is fully initialized. Signed-off-by: Hannes Reinecke <hare@suse.de> Tested-by: Don Brace <don.brace@microchip.com> --- drivers/scsi/hpsa.c | 37 +++++++++++++++++++------------------ 1 file changed, 19 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 81d0414e2117..db0142a16a72 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -5839,6 +5839,22 @@ static int hpsa_scsi_host_alloc(struct ctlr_info *h) return 0; } +static void hpsa_hba_inquiry(struct ctlr_info *h) +{ + int rc; + +#define HBA_INQUIRY_BYTE_COUNT 64 + h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); + if (!h->hba_inquiry_data) + return; + rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, + h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); + if (rc != 0) { + kfree(h->hba_inquiry_data); + h->hba_inquiry_data = NULL; + } +} + static int hpsa_scsi_add_host(struct ctlr_info *h) { int rv; @@ -5848,6 +5864,9 @@ static int hpsa_scsi_add_host(struct ctlr_info *h) dev_err(&h->pdev->dev, "scsi_add_host failed\n"); return rv; } + + hpsa_hba_inquiry(h); + scsi_scan_host(h->scsi_host); return 0; } @@ -7901,22 +7920,6 @@ static int hpsa_pci_init(struct ctlr_info *h) return err; } -static void hpsa_hba_inquiry(struct ctlr_info *h) -{ - int rc; - -#define HBA_INQUIRY_BYTE_COUNT 64 - h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); - if (!h->hba_inquiry_data) - return; - rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, - h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); - if (rc != 0) { - kfree(h->hba_inquiry_data); - h->hba_inquiry_data = NULL; - } -} - static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) { int rc, i; @@ -8825,8 +8828,6 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) /* Turn the interrupts on so we can service requests */ h->access.set_intr_mask(h, HPSA_INTR_ON); - hpsa_hba_inquiry(h); - h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL); if (!h->lastlogicals) dev_info(&h->pdev->dev, -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 15/21] hpsa: use reserved commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (13 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 14/21] hpsa: move hpsa_hba_inquiry after scsi_add_host() Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 16/21] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke ` (6 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Enable the use of reserved commands, and drop the hand-crafted command allocation. Signed-off-by: Hannes Reinecke <hare@suse.de> Tested-by: Don Brace <don.brace@microchip.com> --- drivers/scsi/hpsa.c | 204 ++++++++++++++++++++-------------------------------- drivers/scsi/hpsa.h | 3 +- 2 files changed, 78 insertions(+), 129 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index db0142a16a72..a3212d0e0dc2 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -244,10 +244,6 @@ static struct hpsa_scsi_dev_t *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, struct sas_rphy *rphy); -#define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy) -static const struct scsi_cmnd hpsa_cmd_busy; -#define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle) -static const struct scsi_cmnd hpsa_cmd_idle; static int number_of_controllers; static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); @@ -265,7 +261,7 @@ static int hpsa_compat_ioctl(struct scsi_device *dev, unsigned int cmd, #endif static void cmd_free(struct ctlr_info *h, struct CommandList *c); -static struct CommandList *cmd_alloc(struct ctlr_info *h); +static struct CommandList *cmd_alloc(struct ctlr_info *h, u8 direction); static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c); static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, struct scsi_cmnd *scmd); @@ -346,7 +342,7 @@ static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) static inline bool hpsa_is_cmd_idle(struct CommandList *c) { - return c->scsi_cmd == SCSI_CMD_IDLE; + return c->scsi_cmd == NULL; } /* extract sense key, asc, and ascq from sense data. -1 means invalid. */ @@ -2454,7 +2450,12 @@ static void hpsa_cmd_resolve_events(struct ctlr_info *h, * this command has completed. Then, check to see if the handler is * waiting for this command, and, if so, wake it. */ - c->scsi_cmd = SCSI_CMD_IDLE; + if (c->scsi_cmd && c->cmd_type == CMD_IOCTL_PEND) { + struct scsi_cmnd *scmd = c->scsi_cmd; + + scsi_put_internal_cmd(scmd); + } + c->scsi_cmd = NULL; mb(); /* Declare command idle before checking for pending events. */ if (dev) { atomic_dec(&dev->commands_outstanding); @@ -2997,7 +2998,7 @@ static int hpsa_do_receive_diagnostic(struct ctlr_info *h, u8 *scsi3addr, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); if (fill_cmd(c, RECEIVE_DIAGNOSTIC, h, buf, bufsize, page, scsi3addr, TYPE_CMD)) { rc = -1; @@ -3049,7 +3050,7 @@ static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD)) { @@ -3077,7 +3078,7 @@ static int hpsa_send_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); c->device = dev; /* fill_cmd can't fail here, no data buffer to map. */ @@ -3303,7 +3304,7 @@ static int hpsa_get_raid_map(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map, sizeof(this_device->raid_map), 0, @@ -3345,7 +3346,7 @@ static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize, 0, RAID_CTLR_LUNID, TYPE_CMD); @@ -3376,7 +3377,7 @@ static int hpsa_bmic_id_controller(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize, 0, RAID_CTLR_LUNID, TYPE_CMD); @@ -3405,7 +3406,7 @@ static int hpsa_bmic_id_physical_device(struct ctlr_info *h, struct CommandList *c; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize, 0, RAID_CTLR_LUNID, TYPE_CMD); if (rc) @@ -3477,7 +3478,7 @@ static void hpsa_get_enclosure_info(struct ctlr_info *h, goto out; } - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); rc = fill_cmd(c, BMIC_SENSE_STORAGE_BOX_PARAMS, h, bssbp, sizeof(*bssbp), 0, RAID_CTLR_LUNID, TYPE_CMD); @@ -3733,7 +3734,7 @@ static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, unsigned char scsi3addr[8]; struct ErrorInfo *ei; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); /* address the controller */ memset(scsi3addr, 0, sizeof(scsi3addr)); @@ -3876,7 +3877,7 @@ static unsigned char hpsa_volume_offline(struct ctlr_info *h, #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02 - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD); rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, @@ -5527,7 +5528,6 @@ static void hpsa_cmd_init(struct ctlr_info *h, int index, c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); c->h = h; - c->scsi_cmd = SCSI_CMD_IDLE; } static void hpsa_preinitialize_commands(struct ctlr_info *h) @@ -5822,12 +5822,12 @@ static int hpsa_scsi_host_alloc(struct ctlr_info *h) sh->io_port = 0; sh->n_io_port = 0; - sh->this_id = -1; sh->max_channel = 3; sh->max_cmd_len = MAX_COMMAND_SIZE; sh->max_lun = HPSA_MAX_LUN; sh->max_id = HPSA_MAX_LUN; sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS; + sh->nr_reserved_cmds = HPSA_NRESERVED_CMDS; sh->cmd_per_lun = sh->can_queue; sh->sg_tablesize = h->maxsgentries; sh->transportt = hpsa_sas_transport_template; @@ -5864,30 +5864,18 @@ static int hpsa_scsi_add_host(struct ctlr_info *h) dev_err(&h->pdev->dev, "scsi_add_host failed\n"); return rv; } - + h->raid_ctrl_sdev = scsi_get_host_dev(h->scsi_host); + if (!h->raid_ctrl_sdev) { + dev_err(&h->pdev->dev, + "allocate raid controller device failed\n"); + return -ENOMEM; + } hpsa_hba_inquiry(h); scsi_scan_host(h->scsi_host); return 0; } -/* - * The block layer has already gone to the trouble of picking out a unique, - * small-integer tag for this request. We use an offset from that value as - * an index to select our command block. (The offset allows us to reserve the - * low-numbered entries for our own uses.) - */ -static int hpsa_get_cmd_index(struct scsi_cmnd *scmd) -{ - int idx = scmd->request->tag; - - if (idx < 0) - return idx; - - /* Offset to leave space for internal cmds. */ - return idx += HPSA_NRESERVED_CMDS; -} - /* * Send a TEST_UNIT_READY command to the specified LUN using the specified * reply queue; returns zero if the unit is ready, and non-zero otherwise. @@ -5971,7 +5959,7 @@ static int wait_for_device_to_become_ready(struct ctlr_info *h, int rc = 0; struct CommandList *c; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); /* * If no specific reply queue was requested, then send the TUR @@ -6044,7 +6032,7 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) if (lockup_detected(h)) { snprintf(msg, sizeof(msg), "cmd %d RESET FAILED, lockup detected", - hpsa_get_cmd_index(scsicmd)); + scsicmd->request->tag); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); rc = FAILED; goto return_reset_status; @@ -6054,7 +6042,7 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) if (detect_controller_lockup(h)) { snprintf(msg, sizeof(msg), "cmd %d RESET FAILED, new lockup detected", - hpsa_get_cmd_index(scsicmd)); + scsicmd->request->tag); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); rc = FAILED; goto return_reset_status; @@ -6116,12 +6104,12 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, struct scsi_cmnd *scmd) { - int idx = hpsa_get_cmd_index(scmd); + int idx = scmd->request->tag; struct CommandList *c = h->cmd_pool + idx; - if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) { + if (idx < 0 || idx >= h->nr_cmds) { dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n", - idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1); + idx, 0, h->nr_cmds - 1); /* The index value comes from the block layer, so if it's out of * bounds, it's probably not our bug. */ @@ -6158,80 +6146,52 @@ static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) * else to free it, because it is accessed by index. */ (void)atomic_dec(&c->refcount); + c->scsi_cmd = NULL; } -/* - * For operations that cannot sleep, a command block is allocated at init, - * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track - * which ones are free or in use. Lock must be held when calling this. - * cmd_free() is the complement. - * This function never gives up and returns NULL. If it hangs, - * another thread must call cmd_free() to free some tags. - */ - -static struct CommandList *cmd_alloc(struct ctlr_info *h) +static struct CommandList *cmd_alloc(struct ctlr_info *h, u8 direction) { + struct scsi_cmnd *scmd; struct CommandList *c; - int refcount, i; - int offset = 0; - - /* - * There is some *extremely* small but non-zero chance that that - * multiple threads could get in here, and one thread could - * be scanning through the list of bits looking for a free - * one, but the free ones are always behind him, and other - * threads sneak in behind him and eat them before he can - * get to them, so that while there is always a free one, a - * very unlucky thread might be starved anyway, never able to - * beat the other threads. In reality, this happens so - * infrequently as to be indistinguishable from never. - * - * Note that we start allocating commands before the SCSI host structure - * is initialized. Since the search starts at bit zero, this - * all works, since we have at least one command structure available; - * however, it means that the structures with the low indexes have to be - * reserved for driver-initiated requests, while requests from the block - * layer will use the higher indexes. - */ - - for (;;) { - i = find_next_zero_bit(h->cmd_pool_bits, - HPSA_NRESERVED_CMDS, - offset); - if (unlikely(i >= HPSA_NRESERVED_CMDS)) { - offset = 0; - continue; - } - c = h->cmd_pool + i; - refcount = atomic_inc_return(&c->refcount); - if (unlikely(refcount > 1)) { - cmd_free(h, c); /* already in use */ - offset = (i + 1) % HPSA_NRESERVED_CMDS; - continue; - } - set_bit(i & (BITS_PER_LONG - 1), - h->cmd_pool_bits + (i / BITS_PER_LONG)); - break; /* it's ours now. */ + int idx; + + scmd = scsi_get_internal_cmd(h->raid_ctrl_sdev, + (direction & XFER_WRITE) ? + DMA_TO_DEVICE : DMA_FROM_DEVICE, + REQ_NOWAIT); + if (!scmd) { + dev_warn(&h->pdev->dev, "failed to allocate reserved cmd\n"); + return NULL; + } + idx = scmd->request->tag; + c = cmd_tagged_alloc(h, scmd); + if (!c) { + dev_warn(&h->pdev->dev, "failed to allocate reserved cmd %u\n", + idx); + scsi_put_internal_cmd(scmd); + return NULL; } - hpsa_cmd_partial_init(h, i, c); + hpsa_cmd_partial_init(h, idx, c); + c->scsi_cmd = scmd; c->device = NULL; + c->cmd_type = CMD_IOCTL_PEND; + dev_dbg(&h->pdev->dev, "using reserved cmd %u\n", idx); return c; } -/* - * This is the complementary operation to cmd_alloc(). Note, however, in some - * corner cases it may also be used to free blocks allocated by - * cmd_tagged_alloc() in which case the ref-count decrement does the trick and - * the clear-bit is harmless. - */ static void cmd_free(struct ctlr_info *h, struct CommandList *c) { - if (atomic_dec_and_test(&c->refcount)) { - int i; + struct scsi_cmnd *scmd = c->scsi_cmd; - i = c - h->cmd_pool; - clear_bit(i & (BITS_PER_LONG - 1), - h->cmd_pool_bits + (i / BITS_PER_LONG)); + if (!scmd) { + dev_warn(&h->pdev->dev, "freeing idle cmd\n"); + return; + } + cmd_tagged_free(h, c); + if (c->cmd_type == CMD_IOCTL_PEND) { + dev_dbg(&h->pdev->dev, "returning reserved cmd %u\n", + scmd->request->tag); + scsi_put_internal_cmd(scmd); } } @@ -6398,11 +6358,8 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, memset(buff, 0, iocommand->buf_size); } } - c = cmd_alloc(h); + c = cmd_alloc(h, iocommand->Request.Type.Direction); - /* Fill in the command type */ - c->cmd_type = CMD_IOCTL_PEND; - c->scsi_cmd = SCSI_CMD_BUSY; /* Fill in Command Header */ c->Header.ReplyQueue = 0; /* unused in simple mode */ if (iocommand->buf_size > 0) { /* buffer to fill */ @@ -6515,10 +6472,8 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, data_ptr += sz; sg_used++; } - c = cmd_alloc(h); + c = cmd_alloc(h, ioc->Request.Type.Direction); - c->cmd_type = CMD_IOCTL_PEND; - c->scsi_cmd = SCSI_CMD_BUSY; c->Header.ReplyQueue = 0; c->Header.SGList = (u8) sg_used; c->Header.SGTotal = cpu_to_le16(sg_used); @@ -6649,7 +6604,7 @@ static void hpsa_send_host_reset(struct ctlr_info *h, u8 reset_type) { struct CommandList *c; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); /* fill_cmd can't fail here, no data buffer to map */ (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, @@ -6670,8 +6625,6 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, { enum dma_data_direction dir = DMA_NONE; - c->cmd_type = CMD_IOCTL_PEND; - c->scsi_cmd = SCSI_CMD_BUSY; c->Header.ReplyQueue = 0; if (buff != NULL && size > 0) { c->Header.SGList = 1; @@ -7984,8 +7937,6 @@ static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) static void hpsa_free_cmd_pool(struct ctlr_info *h) { - kfree(h->cmd_pool_bits); - h->cmd_pool_bits = NULL; if (h->cmd_pool) { dma_free_coherent(&h->pdev->dev, h->nr_cmds * sizeof(struct CommandList), @@ -8006,17 +7957,13 @@ static void hpsa_free_cmd_pool(struct ctlr_info *h) static int hpsa_alloc_cmd_pool(struct ctlr_info *h) { - h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG), - sizeof(unsigned long), - GFP_KERNEL); h->cmd_pool = dma_alloc_coherent(&h->pdev->dev, h->nr_cmds * sizeof(*h->cmd_pool), &h->cmd_pool_dhandle, GFP_KERNEL); h->errinfo_pool = dma_alloc_coherent(&h->pdev->dev, h->nr_cmds * sizeof(*h->errinfo_pool), &h->errinfo_pool_dhandle, GFP_KERNEL); - if ((h->cmd_pool_bits == NULL) - || (h->cmd_pool == NULL) + if ((h->cmd_pool == NULL) || (h->errinfo_pool == NULL)) { dev_err(&h->pdev->dev, "out of memory in %s", __func__); goto clean_up; @@ -8899,7 +8846,7 @@ static void hpsa_flush_cache(struct ctlr_info *h) if (!flush_buf) return; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_NONE); if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, RAID_CTLR_LUNID, TYPE_CMD)) { @@ -8934,7 +8881,7 @@ static void hpsa_disable_rld_caching(struct ctlr_info *h) if (!options) return; - c = cmd_alloc(h); + c = cmd_alloc(h, XFER_READ); /* first, get the current diag options settings */ if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, @@ -8984,11 +8931,10 @@ static void __hpsa_shutdown(struct pci_dev *pdev) struct ctlr_info *h; h = pci_get_drvdata(pdev); - /* Turn board interrupts off and send the flush cache command - * sendcmd will turn off interrupt, and send the flush... - * To write all data in the battery backed cache to disks + /* + * Turn board interrupts off; + * flush cache command has already been sent. */ - hpsa_flush_cache(h); h->access.set_intr_mask(h, HPSA_INTR_OFF); hpsa_free_irqs(h); /* init_one 4 */ hpsa_disable_interrupt_mode(h); /* pci_init 2 */ @@ -8996,6 +8942,7 @@ static void __hpsa_shutdown(struct pci_dev *pdev) static void hpsa_shutdown(struct pci_dev *pdev) { + hpsa_flush_cache(pci_get_drvdata(pdev)); __hpsa_shutdown(pdev); pci_disable_device(pdev); } @@ -9040,6 +8987,7 @@ static void hpsa_remove_one(struct pci_dev *pdev) * when multipath is enabled. There can be SYNCHRONIZE CACHE * operations which cannot complete and will hang the system. */ + hpsa_flush_cache(h); if (h->scsi_host) scsi_remove_host(h->scsi_host); /* init_one 8 */ /* includes hpsa_free_irqs - init_one 4 */ diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index f8c88fc7b80a..d5fcecbc4401 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -205,7 +205,6 @@ struct ctlr_info { dma_addr_t ioaccel2_cmd_pool_dhandle; struct ErrorInfo *errinfo_pool; dma_addr_t errinfo_pool_dhandle; - unsigned long *cmd_pool_bits; int scan_finished; u8 scan_waiting : 1; spinlock_t scan_lock; @@ -215,6 +214,8 @@ struct ctlr_info { spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */ int ndevices; /* number of used elements in .dev[] array. */ struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES]; + struct scsi_device *raid_ctrl_sdev; + /* * Performant mode tables. */ -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 16/21] hpsa: use scsi_host_busy_iter() to traverse outstanding commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (14 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 15/21] hpsa: use reserved commands Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 17/21] hpsa: drop refcount field from CommandList Hannes Reinecke ` (5 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Replace all hand-crafted command iterations with scsi_host_busy_iter() calls. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/hpsa.c | 117 ++++++++++++++++++++++++++++++---------------------- 1 file changed, 67 insertions(+), 50 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index a3212d0e0dc2..6f0ef39471ce 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -1816,30 +1816,26 @@ static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) return rc; } -static int hpsa_find_outstanding_commands_for_dev(struct ctlr_info *h, - struct hpsa_scsi_dev_t *dev) -{ - int i; - int count = 0; - - for (i = 0; i < h->nr_cmds; i++) { - struct CommandList *c = h->cmd_pool + i; - int refcount = atomic_inc_return(&c->refcount); - - if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, - dev->scsi3addr)) { - unsigned long flags; +struct hpsa_command_iter_data { + struct ctlr_info *h; + struct hpsa_scsi_dev_t *dev; + unsigned char *scsi3addr; + int count; +}; - spin_lock_irqsave(&h->lock, flags); /* Implied MB */ - if (!hpsa_is_cmd_idle(c)) - ++count; - spin_unlock_irqrestore(&h->lock, flags); - } +static bool hpsa_find_outstanding_commands_iter(struct scsi_cmnd *sc, + void *data, bool reserved) +{ + struct hpsa_command_iter_data *iter_data = data; + struct ctlr_info *h = iter_data->h; + struct hpsa_scsi_dev_t *dev = iter_data->dev; + struct CommandList *c = h->cmd_pool + sc->request->tag; - cmd_free(h, c); + if (hpsa_cmd_dev_match(h, c, dev, dev->scsi3addr)) { + iter_data->count++; + return false; } - - return count; + return true; } #define NUM_WAIT 20 @@ -1849,13 +1845,20 @@ static void hpsa_wait_for_outstanding_commands_for_dev(struct ctlr_info *h, int cmds = 0; int waits = 0; int num_wait = NUM_WAIT; + struct hpsa_command_iter_data iter_data = { + .h = h, + .dev = device, + }; if (device->external) num_wait = HPSA_EH_PTRAID_TIMEOUT; while (1) { - cmds = hpsa_find_outstanding_commands_for_dev(h, device); - if (cmds == 0) + iter_data.count = 0; + scsi_host_busy_iter(h->scsi_host, + hpsa_find_outstanding_commands_iter, + &iter_data); + if (iter_data.count == 0) break; if (++waits > num_wait) break; @@ -8134,27 +8137,34 @@ static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) kfree(h); /* init_one 1 */ } +static bool fail_all_outstanding_cmds_iter(struct scsi_cmnd *sc, void *data, + bool reserved) +{ + struct hpsa_command_iter_data *iter_data = data; + struct ctlr_info *h = iter_data->h; + struct CommandList *c = h->cmd_pool + sc->request->tag; + + c->err_info->CommandStatus = CMD_CTLR_LOCKUP; + finish_cmd(c); + atomic_dec(&h->commands_outstanding); + iter_data->count++; + + return true; +} + /* Called when controller lockup detected. */ static void fail_all_outstanding_cmds(struct ctlr_info *h) { - int i, refcount; - struct CommandList *c; - int failcount = 0; + struct hpsa_command_iter_data iter_data = { + .h = h, + .count = 0, + }; flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */ - for (i = 0; i < h->nr_cmds; i++) { - c = h->cmd_pool + i; - refcount = atomic_inc_return(&c->refcount); - if (refcount > 1) { - c->err_info->CommandStatus = CMD_CTLR_LOCKUP; - finish_cmd(c); - atomic_dec(&h->commands_outstanding); - failcount++; - } - cmd_free(h, c); - } + scsi_host_busy_iter(h->scsi_host, + fail_all_outstanding_cmds_iter, &iter_data); dev_warn(&h->pdev->dev, - "failed %d commands in fail_all\n", failcount); + "failed %d commands in fail_all\n", iter_data.count); } static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value) @@ -9454,22 +9464,29 @@ static int is_accelerated_cmd(struct CommandList *c) return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2; } +static bool hpsa_drain_accel_commands_iter(struct scsi_cmnd *sc, void *data, + bool reserved) +{ + struct hpsa_command_iter_data *iter_data = data; + struct ctlr_info *h = iter_data->h; + struct CommandList *c = h->cmd_pool + sc->request->tag; + + iter_data->count += is_accelerated_cmd(c); + return true; +} + static void hpsa_drain_accel_commands(struct ctlr_info *h) { - struct CommandList *c = NULL; - int i, accel_cmds_out; - int refcount; + struct hpsa_command_iter_data iter_data = { + .h = h, + }; do { /* wait for all outstanding ioaccel commands to drain out */ - accel_cmds_out = 0; - for (i = 0; i < h->nr_cmds; i++) { - c = h->cmd_pool + i; - refcount = atomic_inc_return(&c->refcount); - if (refcount > 1) /* Command is allocated */ - accel_cmds_out += is_accelerated_cmd(c); - cmd_free(h, c); - } - if (accel_cmds_out <= 0) + iter_data.count = 0; + scsi_host_busy_iter(h->scsi_host, + hpsa_drain_accel_commands_iter, + &iter_data); + if (iter_data.count <= 0) break; msleep(100); } while (1); -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 17/21] hpsa: drop refcount field from CommandList 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (15 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 16/21] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 18/21] aacraid: move scsi_add_host() Hannes Reinecke ` (4 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke, Hannes Reinecke Field is now unused, so drop it. Signed-off-by: Hannes Reinecke <hare@suse.com> --- drivers/scsi/hpsa.c | 12 ++---------- drivers/scsi/hpsa_cmd.h | 1 - 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 6f0ef39471ce..52a313428a01 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -5518,8 +5518,8 @@ static void hpsa_cmd_init(struct ctlr_info *h, int index, { dma_addr_t cmd_dma_handle, err_dma_handle; - /* Zero out all of commandlist except the last field, refcount */ - memset(c, 0, offsetof(struct CommandList, refcount)); + /* Zero out all of commandlist */ + memset(c, 0, sizeof(struct CommandList)); c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT)); cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); c->err_info = h->errinfo_pool + index; @@ -5541,7 +5541,6 @@ static void hpsa_preinitialize_commands(struct ctlr_info *h) struct CommandList *c = h->cmd_pool + i; hpsa_cmd_init(h, i, c); - atomic_set(&c->refcount, 0); } } @@ -6136,19 +6135,12 @@ static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, return NULL; } - atomic_inc(&c->refcount); - hpsa_cmd_partial_init(h, idx, c); return c; } static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) { - /* - * Release our reference to the block. We don't need to do anything - * else to free it, because it is accessed by index. - */ - (void)atomic_dec(&c->refcount); c->scsi_cmd = NULL; } diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index 7825cbfea4dc..2575a396f1a5 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -449,7 +449,6 @@ struct CommandList { int abort_pending; struct hpsa_scsi_dev_t *device; - atomic_t refcount; /* Must be last to avoid memset in hpsa_cmd_init() */ } __aligned(COMMANDLIST_ALIGNMENT); /* Max S/G elements in I/O accelerator command */ -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 18/21] aacraid: move scsi_add_host() 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (16 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 17/21] hpsa: drop refcount field from CommandList Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 19/21] aacraid: store target id in host_scribble Hannes Reinecke ` (3 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke, Hannes Reinecke Move the call to scsi_add_host() so that the Scsi_Host structure is initialized before any I/O is sent. Signed-off-by: Hannes Reinecke <hare@suse.com> --- drivers/scsi/aacraid/linit.c | 31 +++++++++++++++---------------- 1 file changed, 15 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index a308e86a97f1..91cbe479cfa8 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -1696,6 +1696,9 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) shost->irq = pdev->irq; shost->unique_id = unique_id; shost->max_cmd_len = 16; + shost->max_id = MAXIMUM_NUM_CONTAINERS; + shost->max_lun = AAC_MAX_LUN; + shost->sg_tablesize = HBA_MAX_SG_SEPARATE; if (aac_cfg_major == AAC_CHARDEV_NEEDS_REINIT) aac_init_char(); @@ -1734,7 +1737,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) aac->base_size = AAC_MIN_FOOTPRINT_SIZE; if ((*aac_drivers[index].init)(aac)) { error = -ENODEV; - goto out_unmap; + goto out_free_fibs; } if (aac->sync_mode) { @@ -1760,9 +1763,15 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) printk(KERN_ERR "aacraid: Unable to create command thread.\n"); error = PTR_ERR(aac->thread); aac->thread = NULL; - goto out_deinit; + goto out_unmap; } + pci_set_drvdata(pdev, shost); + + error = scsi_add_host(shost, &pdev->dev); + if (error) + goto out_deinit; + aac->maximum_num_channels = aac_drivers[index].channels; error = aac_get_adapter_info(aac); if (error < 0) @@ -1821,18 +1830,6 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) if (!aac->sa_firmware && aac_drivers[index].quirks & AAC_QUIRK_SRC) aac_intr_normal(aac, 0, 2, 0, NULL); - /* - * dmb - we may need to move the setting of these parms somewhere else once - * we get a fib that can report the actual numbers - */ - shost->max_lun = AAC_MAX_LUN; - - pci_set_drvdata(pdev, shost); - - error = scsi_add_host(shost, &pdev->dev); - if (error) - goto out_deinit; - aac_scan_host(aac); pci_enable_pcie_error_reporting(pdev); @@ -1849,10 +1846,12 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) aac->comm_addr, aac->comm_phys); kfree(aac->queues); aac_adapter_ioremap(aac, 0); - kfree(aac->fibs); kfree(aac->fsa_dev); + out_free_fibs: + kfree(aac->fibs); out_free_host: scsi_host_put(shost); + pci_set_drvdata(pdev, NULL); out_disable_pdev: pci_disable_device(pdev); out: @@ -1979,9 +1978,9 @@ static void aac_remove_one(struct pci_dev *pdev) struct aac_dev *aac = (struct aac_dev *)shost->hostdata; aac_cancel_rescan_worker(aac); - scsi_remove_host(shost); __aac_shutdown(aac); + scsi_remove_host(shost); aac_fib_map_free(aac); dma_free_coherent(&aac->pdev->dev, aac->comm_size, aac->comm_addr, aac->comm_phys); -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 19/21] aacraid: store target id in host_scribble 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (17 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 18/21] aacraid: move scsi_add_host() Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 20/21] aacraid: use scsi_get_internal_cmd() Hannes Reinecke ` (2 subsequent siblings) 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke The probe_container mechanism requires a target id to be present, even if the device itself isn't present (yet). As we're now allocating internal commands the target id of the device is immutable, so store the requested target id in the host_scribble field. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/aacraid/aachba.c | 53 +++++++++++++++++++++++++++++++------------ 1 file changed, 38 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index 2b868f8db8ff..e1ba5e65a66f 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -608,9 +608,11 @@ static int aac_get_container_name(struct scsi_cmnd * scsicmd) static int aac_probe_container_callback2(struct scsi_cmnd * scsicmd) { - struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev; + struct aac_dev *dev = (struct aac_dev *)(scsicmd->device->host->hostdata); + struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev; - if ((fsa_dev_ptr[scmd_id(scsicmd)].valid & 1)) + if (scmd_id(scsicmd) < dev->maximum_num_containers && + (fsa_dev_ptr[scmd_id(scsicmd)].valid & 1)) return aac_scsi_cmd(scsicmd); scsicmd->result = DID_NO_CONNECT << 16; @@ -623,6 +625,7 @@ static void _aac_probe_container2(void * context, struct fib * fibptr) struct fsa_dev_info *fsa_dev_ptr; int (*callback)(struct scsi_cmnd *); struct scsi_cmnd * scsicmd = (struct scsi_cmnd *)context; + int cid = scmd_id(scsicmd); int i; @@ -630,12 +633,15 @@ static void _aac_probe_container2(void * context, struct fib * fibptr) return; scsicmd->SCp.Status = 0; + if (scsicmd->host_scribble) + cid = *(int *)scsicmd->host_scribble; + fsa_dev_ptr = fibptr->dev->fsa_dev; - if (fsa_dev_ptr) { + if (fsa_dev_ptr && cid < fibptr->dev->maximum_num_containers) { struct aac_mount * dresp = (struct aac_mount *) fib_data(fibptr); __le32 sup_options2; - fsa_dev_ptr += scmd_id(scsicmd); + fsa_dev_ptr += cid; sup_options2 = fibptr->dev->supplement_adapter_info.supported_options2; @@ -670,7 +676,6 @@ static void _aac_probe_container2(void * context, struct fib * fibptr) scsicmd->SCp.Status = le32_to_cpu(dresp->count); } aac_fib_complete(fibptr); - aac_fib_free(fibptr); callback = (int (*)(struct scsi_cmnd *))(scsicmd->SCp.ptr); scsicmd->SCp.ptr = NULL; (*callback)(scsicmd); @@ -682,6 +687,7 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) struct scsi_cmnd * scsicmd; struct aac_mount * dresp; struct aac_query_mount *dinfo; + int cid; int status; dresp = (struct aac_mount *) fib_data(fibptr); @@ -694,10 +700,15 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) } } scsicmd = (struct scsi_cmnd *) context; - if (!aac_valid_context(scsicmd, fibptr)) return; - + cid = scmd_id(scsicmd); + if (scsicmd->host_scribble) + cid = *(int *)scsicmd->host_scribble; + if (cid >= fibptr->dev->maximum_num_containers) { + _aac_probe_container2(context, fibptr); + return; + } aac_fib_init(fibptr); dinfo = (struct aac_query_mount *)fib_data(fibptr); @@ -708,7 +719,7 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) else dinfo->command = cpu_to_le32(VM_NameServe64); - dinfo->count = cpu_to_le32(scmd_id(scsicmd)); + dinfo->count = cpu_to_le32(cid); dinfo->type = cpu_to_le32(FT_FILESYS); scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; @@ -731,10 +742,20 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(struct scsi_cmnd *)) { + struct aac_dev * dev; struct fib * fibptr; int status = -ENOMEM; + int cid = scmd_id(scsicmd); - if ((fibptr = aac_fib_alloc((struct aac_dev *)scsicmd->device->host->hostdata))) { + dev = (struct aac_dev *)scsicmd->device->host->hostdata; + if (scsicmd->host_scribble) { + cid = *(int *)scsicmd->host_scribble; + if (cid > dev->maximum_num_containers) { + status = -ENODEV; + goto out_status; + } + } + if ((fibptr = aac_fib_alloc(dev))) { struct aac_query_mount *dinfo; aac_fib_init(fibptr); @@ -747,7 +768,7 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru else dinfo->command = cpu_to_le32(VM_NameServe); - dinfo->count = cpu_to_le32(scmd_id(scsicmd)); + dinfo->count = cpu_to_le32(cid); dinfo->type = cpu_to_le32(FT_FILESYS); scsicmd->SCp.ptr = (char *)callback; scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; @@ -771,10 +792,11 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru aac_fib_free(fibptr); } } +out_status: if (status < 0) { - struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev; - if (fsa_dev_ptr) { - fsa_dev_ptr += scmd_id(scsicmd); + struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev; + if (fsa_dev_ptr && cid < dev->maximum_num_containers) { + fsa_dev_ptr += cid; if ((fsa_dev_ptr->valid & 1) == 0) { fsa_dev_ptr->valid = 0; return (*callback)(scsicmd); @@ -794,7 +816,7 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru */ static int aac_probe_container_callback1(struct scsi_cmnd * scsicmd) { - scsicmd->device = NULL; + scsicmd->host_scribble = NULL; return 0; } @@ -815,6 +837,7 @@ int aac_probe_container(struct aac_dev *dev, int cid) return -ENOMEM; } scsicmd->scsi_done = aac_probe_container_scsi_done; + scsicmd->host_scribble = (unsigned char *)&cid; scsicmd->device = scsidev; scsidev->sdev_state = 0; @@ -822,7 +845,7 @@ int aac_probe_container(struct aac_dev *dev, int cid) scsidev->host = dev->scsi_host_ptr; if (_aac_probe_container(scsicmd, aac_probe_container_callback1) == 0) - while (scsicmd->device == scsidev) + while (scsicmd->host_scribble == (unsigned char *)&cid) schedule(); kfree(scsidev); status = scsicmd->SCp.Status; -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 20/21] aacraid: use scsi_get_internal_cmd() 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (18 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 19/21] aacraid: store target id in host_scribble Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-07-03 13:01 ` [PATCH 21/21] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke 2020-10-27 15:27 ` [PATCHv6 00/21] scsi: enable reserved commands for LLDDs John Garry 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke From: Hannes Reinecke <hare@suse.com> Use scsi_get_internal_cmd() to allocate internal commands. And move scsi_add_host() such that it's allocated early enough to provide tags for the initialisation commands. Signed-off-by: Hannes Reinecke <hare@suse.com> --- drivers/scsi/aacraid/aachba.c | 92 +++++++++++++++++++---------------------- drivers/scsi/aacraid/aacraid.h | 10 +++-- drivers/scsi/aacraid/commctrl.c | 25 ++++++----- drivers/scsi/aacraid/comminit.c | 2 +- drivers/scsi/aacraid/commsup.c | 60 ++++++++++++--------------- drivers/scsi/aacraid/dpcsup.c | 2 +- drivers/scsi/aacraid/linit.c | 13 ++++-- 7 files changed, 102 insertions(+), 102 deletions(-) diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index e1ba5e65a66f..a937a8b0d54b 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -359,7 +359,7 @@ int aac_get_config_status(struct aac_dev *dev, int commit_flag) int status = 0; struct fib * fibptr; - if (!(fibptr = aac_fib_alloc(dev))) + if (!(fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE))) return -ENOMEM; aac_fib_init(fibptr); @@ -456,7 +456,7 @@ int aac_get_containers(struct aac_dev *dev) struct aac_get_container_count_resp *dresp; int maximum_num_containers = MAXIMUM_NUM_CONTAINERS; - if (!(fibptr = aac_fib_alloc(dev))) + if (!(fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE))) return -ENOMEM; aac_fib_init(fibptr); @@ -740,61 +740,56 @@ static void _aac_probe_container1(void * context, struct fib * fibptr) } } -static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(struct scsi_cmnd *)) +static int _aac_probe_container(struct fib * fibptr, int (*callback)(struct scsi_cmnd *)) { + struct scsi_cmnd *scsicmd = fibptr->scmd; struct aac_dev * dev; - struct fib * fibptr; int status = -ENOMEM; + struct aac_query_mount *dinfo; int cid = scmd_id(scsicmd); dev = (struct aac_dev *)scsicmd->device->host->hostdata; if (scsicmd->host_scribble) { - cid = *(int *)scsicmd->host_scribble; - if (cid > dev->maximum_num_containers) { + cid = *(unsigned int *)scsicmd->host_scribble; + if (cid >= dev->maximum_num_containers) { status = -ENODEV; goto out_status; } } - if ((fibptr = aac_fib_alloc(dev))) { - struct aac_query_mount *dinfo; - aac_fib_init(fibptr); + aac_fib_init(fibptr); - dinfo = (struct aac_query_mount *)fib_data(fibptr); + dinfo = (struct aac_query_mount *)fib_data(fibptr); - if (fibptr->dev->supplement_adapter_info.supported_options2 & - AAC_OPTION_VARIABLE_BLOCK_SIZE) - dinfo->command = cpu_to_le32(VM_NameServeAllBlk); - else - dinfo->command = cpu_to_le32(VM_NameServe); + if (fibptr->dev->supplement_adapter_info.supported_options2 & + AAC_OPTION_VARIABLE_BLOCK_SIZE) + dinfo->command = cpu_to_le32(VM_NameServeAllBlk); + else + dinfo->command = cpu_to_le32(VM_NameServe); - dinfo->count = cpu_to_le32(cid); - dinfo->type = cpu_to_le32(FT_FILESYS); - scsicmd->SCp.ptr = (char *)callback; - scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; + dinfo->count = cpu_to_le32(cid); + dinfo->type = cpu_to_le32(FT_FILESYS); + scsicmd->SCp.ptr = (char *)callback; + scsicmd->SCp.phase = AAC_OWNER_FIRMWARE; - status = aac_fib_send(ContainerCommand, + status = aac_fib_send(ContainerCommand, fibptr, sizeof(struct aac_query_mount), FsaNormal, 0, 1, _aac_probe_container1, (void *) scsicmd); - /* - * Check that the command queued to the controller - */ - if (status == -EINPROGRESS) - return 0; - - if (status < 0) { - scsicmd->SCp.ptr = NULL; - aac_fib_complete(fibptr); - aac_fib_free(fibptr); - } - } + /* + * Check that the command queued to the controller + */ + if (status == -EINPROGRESS) + return 0; out_status: if (status < 0) { struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev; + + scsicmd->SCp.ptr = NULL; + aac_fib_complete(fibptr); if (fsa_dev_ptr && cid < dev->maximum_num_containers) { fsa_dev_ptr += cid; if ((fsa_dev_ptr->valid & 1) == 0) { @@ -827,29 +822,23 @@ static void aac_probe_container_scsi_done(struct scsi_cmnd *scsi_cmnd) int aac_probe_container(struct aac_dev *dev, int cid) { - struct scsi_cmnd *scsicmd = kmalloc(sizeof(*scsicmd), GFP_KERNEL); - struct scsi_device *scsidev = kmalloc(sizeof(*scsidev), GFP_KERNEL); + struct fib *fibptr; + struct scsi_cmnd *scsicmd; int status; - if (!scsicmd || !scsidev) { - kfree(scsicmd); - kfree(scsidev); + fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE); + if (!fibptr) return -ENOMEM; - } + + scsicmd = fibptr->scmd; scsicmd->scsi_done = aac_probe_container_scsi_done; scsicmd->host_scribble = (unsigned char *)&cid; - scsicmd->device = scsidev; - scsidev->sdev_state = 0; - scsidev->id = cid; - scsidev->host = dev->scsi_host_ptr; - - if (_aac_probe_container(scsicmd, aac_probe_container_callback1) == 0) + if (_aac_probe_container(fibptr, aac_probe_container_callback1) == 0) while (scsicmd->host_scribble == (unsigned char *)&cid) schedule(); - kfree(scsidev); status = scsicmd->SCp.Status; - kfree(scsicmd); + aac_fib_free(fibptr); return status; } @@ -1695,7 +1684,7 @@ static int aac_send_safw_bmic_cmd(struct aac_dev *dev, return 0; /* allocate FIB */ - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_BIDIRECTIONAL); if (!fibptr) return -ENOMEM; @@ -2062,7 +2051,7 @@ int aac_get_adapter_info(struct aac_dev* dev) struct aac_bus_info *command; struct aac_bus_info_response *bus_info; - if (!(fibptr = aac_fib_alloc(dev))) + if (!(fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE))) return -ENOMEM; aac_fib_init(fibptr); @@ -2109,7 +2098,7 @@ int aac_get_adapter_info(struct aac_dev* dev) if (rcode >= 0) memcpy(&dev->supplement_adapter_info, sinfo, sizeof(*sinfo)); if (rcode == -ERESTARTSYS) { - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_FROM_DEVICE); if (!fibptr) return -ENOMEM; } @@ -2828,6 +2817,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd) if (((fsa_dev_ptr[cid].valid & 1) == 0) || (fsa_dev_ptr[cid].sense_data.sense_key == NOT_READY)) { + struct fib * fibptr; + switch (scsicmd->cmnd[0]) { case SERVICE_ACTION_IN_16: if (!(dev->raw_io_interface) || @@ -2840,7 +2831,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd) case TEST_UNIT_READY: if (dev->in_reset) return -1; - return _aac_probe_container(scsicmd, + fibptr = aac_fib_alloc_tag(dev, scsicmd); + return _aac_probe_container(fibptr, aac_probe_container_callback2); default: break; diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index e3e4ecbea726..3cd7f33497d8 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -1291,13 +1291,16 @@ struct fsa_dev_info { }; struct fib { - void *next; /* this is used by the allocator */ s16 type; s16 size; /* * The Adapter that this I/O is destined for. */ struct aac_dev *dev; + /* + * The associated scsi command + */ + struct scsi_cmnd *scmd; /* * This is the event the sendfib routine will wait on if the * caller did not pass one and this is synch io. @@ -1552,7 +1555,6 @@ struct aac_dev */ struct fib *fibs; - struct fib *free_fib; spinlock_t fib_lock; struct mutex ioctl_mutex; @@ -1597,6 +1599,7 @@ struct aac_dev size_t comm_size; struct Scsi_Host *scsi_host_ptr; + struct scsi_device *scsi_host_dev; int maximum_num_containers; int maximum_num_physicals; int maximum_num_channels; @@ -1729,6 +1732,7 @@ struct aac_dev #define FIB_CONTEXT_FLAG_NATIVE_HBA_TMF (0x00000020) #define FIB_CONTEXT_FLAG_SCSI_CMD (0x00000040) #define FIB_CONTEXT_FLAG_EH_RESET (0x00000080) +#define FIB_CONTEXT_FLAG_INTERNAL_CMD (0x00000100) /* * Define the command values @@ -2686,7 +2690,7 @@ void aac_free_irq(struct aac_dev *dev); int aac_setup_safw_adapter(struct aac_dev *dev); const char *aac_driverinfo(struct Scsi_Host *); void aac_fib_vector_assign(struct aac_dev *dev); -struct fib *aac_fib_alloc(struct aac_dev *dev); +struct fib *aac_fib_alloc(struct aac_dev *dev, int direction); struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd); int aac_fib_setup(struct aac_dev *dev); void aac_fib_map_free(struct aac_dev *dev); diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index 34e65dea992e..f45b546310aa 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -55,7 +55,7 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg) if (dev->in_reset) { return -EBUSY; } - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_BIDIRECTIONAL); if(fibptr == NULL) { return -ENOMEM; } @@ -462,7 +462,7 @@ static int check_revision(struct aac_dev *dev, void __user *arg) static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) { - struct fib* srbfib; + struct fib* srbfib = NULL; int status; struct aac_srb *srbcmd = NULL; struct aac_hba_cmd_req *hbacmd = NULL; @@ -493,12 +493,6 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n")); return -EPERM; } - /* - * Allocate and initialize a Fib then setup a SRB command - */ - if (!(srbfib = aac_fib_alloc(dev))) { - return -ENOMEM; - } memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */ if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){ @@ -545,6 +539,15 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) rcode = -EINVAL; goto cleanup; } + + /* + * Allocate and initialize a Fib + */ + if (!(srbfib = aac_fib_alloc(dev, data_dir))) { + rcode = -ENOMEM; + goto cleanup; + } + actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) + ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry)); actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) * @@ -970,8 +973,10 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) if (rcode != -ERESTARTSYS) { for (i = 0; i <= sg_indx; i++) kfree(sg_list[i]); - aac_fib_complete(srbfib); - aac_fib_free(srbfib); + if (srbfib) { + aac_fib_complete(srbfib); + aac_fib_free(srbfib); + } } return rcode; diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c index 355b16f0b145..0d5be76891b0 100644 --- a/drivers/scsi/aacraid/comminit.c +++ b/drivers/scsi/aacraid/comminit.c @@ -327,7 +327,7 @@ int aac_send_shutdown(struct aac_dev * dev) aac_wait_for_io_completion(dev); - fibctx = aac_fib_alloc(dev); + fibctx = aac_fib_alloc(dev, DMA_NONE); if (!fibctx) return -ENOMEM; aac_fib_init(fibctx); diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 8ee4e1abe568..7b632b74f4b4 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -173,7 +173,6 @@ int aac_fib_setup(struct aac_dev * dev) fibptr->dev = dev; fibptr->hw_fib_va = hw_fib; fibptr->data = (void *) fibptr->hw_fib_va->data; - fibptr->next = fibptr+1; /* Forward chain the fibs */ init_completion(&fibptr->event_wait); spin_lock_init(&fibptr->event_lock); hw_fib->header.XferState = cpu_to_le32(0xffffffff); @@ -200,14 +199,6 @@ int aac_fib_setup(struct aac_dev * dev) */ aac_fib_vector_assign(dev); - /* - * Add the fib chain to the free list - */ - dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; - /* - * Set 8 fibs aside for management tools - */ - dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue]; return 0; } @@ -232,7 +223,7 @@ struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd) fibptr->type = FSAFS_NTC_FIB_CONTEXT; fibptr->callback_data = NULL; fibptr->callback = NULL; - fibptr->flags = 0; + fibptr->scmd = scmd; return fibptr; } @@ -240,36 +231,30 @@ struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd) /** * aac_fib_alloc - allocate a fib * @dev: Adapter to allocate the fib for + * @direction: DMA data direction * * Allocate a fib from the adapter fib pool. If the pool is empty we * return NULL. */ -struct fib *aac_fib_alloc(struct aac_dev *dev) +struct fib *aac_fib_alloc(struct aac_dev *dev, int direction) { - struct fib * fibptr; + struct scsi_cmnd *scmd; + struct fib * fibptr = NULL; unsigned long flags; + spin_lock_irqsave(&dev->fib_lock, flags); - fibptr = dev->free_fib; - if(!fibptr){ - spin_unlock_irqrestore(&dev->fib_lock, flags); - return fibptr; + scmd = scsi_get_internal_cmd(dev->scsi_host_dev, direction, + REQ_NOWAIT); + if (scmd) { + fibptr = aac_fib_alloc_tag(dev, scmd); + fibptr->flags |= FIB_CONTEXT_FLAG_INTERNAL_CMD; } - dev->free_fib = fibptr->next; spin_unlock_irqrestore(&dev->fib_lock, flags); - /* - * Set the proper node type code and node byte size - */ - fibptr->type = FSAFS_NTC_FIB_CONTEXT; + if (!fibptr) + return NULL; + fibptr->size = sizeof(struct fib); - /* - * Null out fields that depend on being zero at the start of - * each I/O - */ - fibptr->hw_fib_va->header.XferState = 0; - fibptr->flags = 0; - fibptr->callback = NULL; - fibptr->callback_data = NULL; return fibptr; } @@ -297,8 +282,15 @@ void aac_fib_free(struct fib *fibptr) (void*)fibptr, le32_to_cpu(fibptr->hw_fib_va->header.XferState)); } - fibptr->next = fibptr->dev->free_fib; - fibptr->dev->free_fib = fibptr; + if (fibptr->scmd) { + struct scsi_cmnd *scmd = fibptr->scmd; + + fibptr->scmd = NULL; + if (fibptr->flags & FIB_CONTEXT_FLAG_INTERNAL_CMD) { + scsi_put_internal_cmd(scmd); + fibptr->flags &= ~FIB_CONTEXT_FLAG_INTERNAL_CMD; + } + } spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); } @@ -1661,7 +1653,7 @@ int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) retval = unblock_retval; if ((forced < 2) && (retval == -ENODEV)) { /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ - struct fib * fibctx = aac_fib_alloc(aac); + struct fib * fibctx = aac_fib_alloc(aac, DMA_NONE); if (fibctx) { struct aac_pause *cmd; int status; @@ -2288,7 +2280,7 @@ static int aac_send_wellness_command(struct aac_dev *dev, char *wellness_str, int ret = -ENOMEM; u32 vbus, vid; - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_TO_DEVICE); if (!fibptr) goto out; @@ -2386,7 +2378,7 @@ static int aac_send_hosttime(struct aac_dev *dev, struct timespec64 *now) struct fib *fibptr; __le32 *info; - fibptr = aac_fib_alloc(dev); + fibptr = aac_fib_alloc(dev, DMA_TO_DEVICE); if (!fibptr) goto out; diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c index a557aa629827..ae88e1d20c7b 100644 --- a/drivers/scsi/aacraid/dpcsup.c +++ b/drivers/scsi/aacraid/dpcsup.c @@ -315,7 +315,7 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index, int isAif, struct fib *fibctx; struct aac_aifcmd *cmd; - fibctx = aac_fib_alloc(dev); + fibctx = aac_fib_alloc(dev, DMA_FROM_DEVICE); if (!fibctx) return 1; aac_fib_init(fibctx); diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 91cbe479cfa8..9b3d8016e8ef 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -713,7 +713,7 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) return ret; /* start a HBA_TMF_ABORT_TASK TMF request */ - fib = aac_fib_alloc(aac); + fib = aac_fib_alloc(aac, DMA_NONE); if (!fib) return ret; @@ -924,7 +924,7 @@ static int aac_eh_dev_reset(struct scsi_cmnd *cmd) pr_err("%s: Host device reset request. SCSI hang ?\n", AAC_DRIVERNAME); - fib = aac_fib_alloc(aac); + fib = aac_fib_alloc(aac, DMA_NONE); if (!fib) return ret; @@ -987,7 +987,7 @@ static int aac_eh_target_reset(struct scsi_cmnd *cmd) pr_err("%s: Host target reset request. SCSI hang ?\n", AAC_DRIVERNAME); - fib = aac_fib_alloc(aac); + fib = aac_fib_alloc(aac, DMA_NONE); if (!fib) return ret; @@ -1698,6 +1698,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) shost->max_cmd_len = 16; shost->max_id = MAXIMUM_NUM_CONTAINERS; shost->max_lun = AAC_MAX_LUN; + shost->nr_reserved_cmds = AAC_NUM_MGT_FIB; shost->sg_tablesize = HBA_MAX_SG_SEPARATE; if (aac_cfg_major == AAC_CHARDEV_NEEDS_REINIT) @@ -1772,6 +1773,10 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) if (error) goto out_deinit; + aac->scsi_host_dev = scsi_get_host_dev(shost); + if (!aac->scsi_host_dev) + goto out_remove_host; + aac->maximum_num_channels = aac_drivers[index].channels; error = aac_get_adapter_info(aac); if (error < 0) @@ -1847,6 +1852,8 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) kfree(aac->queues); aac_adapter_ioremap(aac, 0); kfree(aac->fsa_dev); + out_remove_host: + scsi_remove_host(shost); out_free_fibs: kfree(aac->fibs); out_free_host: -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* [PATCH 21/21] aacraid: use scsi_host_busy_iter() to traverse outstanding commands 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (19 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 20/21] aacraid: use scsi_get_internal_cmd() Hannes Reinecke @ 2020-07-03 13:01 ` Hannes Reinecke 2020-10-27 15:27 ` [PATCHv6 00/21] scsi: enable reserved commands for LLDDs John Garry 21 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-07-03 13:01 UTC (permalink / raw) To: Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, John Garry, Don Brace, linux-scsi, Hannes Reinecke Instead of walking the array of potential commands and trying to figure out which one might be pending the driver should be using scsi_host_busy_iter() to traverse all outstanding commands. And for command abort we can now lookup the fibs directly as we now have a 1:1 mapping between request tags and fibs. Signed-off-by: Hannes Reinecke <hare@suse.de> --- drivers/scsi/aacraid/commsup.c | 49 ++++++++------- drivers/scsi/aacraid/linit.c | 131 ++++++++++++++++++----------------------- 2 files changed, 84 insertions(+), 96 deletions(-) diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 7b632b74f4b4..dab930454926 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -1464,6 +1464,32 @@ static void aac_schedule_bus_scan(struct aac_dev *aac) aac_schedule_src_reinit_aif_worker(aac); } +static bool aac_close_sync_fib_iter(struct scsi_cmnd *command, void *data, + bool reserved) +{ + struct Scsi_Host *host = command->device->host; + struct aac_dev *aac = (struct aac_dev *)host->hostdata; + struct fib *fib = &aac->fibs[command->request->tag]; + int *retval = data; + __le32 XferState = fib->hw_fib_va->header.XferState; + bool is_response_expected = false; + + if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) && + (XferState & cpu_to_le32(ResponseExpected))) + is_response_expected = true; + + if (is_response_expected + || fib->flags & FIB_CONTEXT_FLAG_WAIT) { + unsigned long flagv; + spin_lock_irqsave(&fib->event_lock, flagv); + complete(&fib->event_wait); + spin_unlock_irqrestore(&fib->event_lock, flagv); + schedule(); + *retval = 0; + } + return true; +} + static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) { int index, quirks; @@ -1472,7 +1498,6 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) int jafo = 0; int bled; u64 dmamask; - int num_of_fibs = 0; /* * Assumptions: @@ -1506,27 +1531,7 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) * Loop through the fibs, close the synchronous FIBS */ retval = 1; - num_of_fibs = aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; - for (index = 0; index < num_of_fibs; index++) { - - struct fib *fib = &aac->fibs[index]; - __le32 XferState = fib->hw_fib_va->header.XferState; - bool is_response_expected = false; - - if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) && - (XferState & cpu_to_le32(ResponseExpected))) - is_response_expected = true; - - if (is_response_expected - || fib->flags & FIB_CONTEXT_FLAG_WAIT) { - unsigned long flagv; - spin_lock_irqsave(&fib->event_lock, flagv); - complete(&fib->event_wait); - spin_unlock_irqrestore(&fib->event_lock, flagv); - schedule(); - retval = 0; - } - } + scsi_host_busy_iter(host, aac_close_sync_fib_iter, &retval); /* Give some extra time for ioctls to complete. */ if (retval == 0) ssleep(2); diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 9b3d8016e8ef..9c9465476d4d 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -680,7 +680,8 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) struct scsi_device * dev = cmd->device; struct Scsi_Host * host = dev->host; struct aac_dev * aac = (struct aac_dev *)host->hostdata; - int count, found; + struct fib *fib; + int count; u32 bus, cid; int ret = FAILED; @@ -690,26 +691,20 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) bus = aac_logical_to_phys(scmd_channel(cmd)); cid = scmd_id(cmd); if (aac->hba_map[bus][cid].devtype == AAC_DEVTYPE_NATIVE_RAW) { - struct fib *fib; struct aac_hba_tm_req *tmf; int status; u64 address; pr_err("%s: Host adapter abort request (%d,%d,%d,%d)\n", - AAC_DRIVERNAME, - host->host_no, sdev_channel(dev), sdev_id(dev), (int)dev->lun); - - found = 0; - for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) { - fib = &aac->fibs[count]; - if (*(u8 *)fib->hw_fib_va != 0 && - (fib->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) && - (fib->callback_data == cmd)) { - found = 1; - break; - } - } - if (!found) + AAC_DRIVERNAME, host->host_no, + sdev_channel(dev), sdev_id(dev), (int)dev->lun); + + fib = &aac->fibs[cmd->request->tag]; + if (*(u8 *)fib->hw_fib_va != 0 && + (fib->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) && + (fib->callback_data == cmd)) + ret = SUCCESS; + if (ret == FAILED) return ret; /* start a HBA_TMF_ABORT_TASK TMF request */ @@ -771,20 +766,13 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) * Mark associated FIB to not complete, * eh handler does this */ - for (count = 0; - count < (host->can_queue + AAC_NUM_MGT_FIB); - ++count) { - struct fib *fib = &aac->fibs[count]; - - if (fib->hw_fib_va->header.XferState && - (fib->flags & FIB_CONTEXT_FLAG) && - (fib->callback_data == cmd)) { - fib->flags |= - FIB_CONTEXT_FLAG_TIMED_OUT; - cmd->SCp.phase = - AAC_OWNER_ERROR_HANDLER; - ret = SUCCESS; - } + fib = &aac->fibs[cmd->request->tag]; + if (fib->hw_fib_va->header.XferState && + (fib->flags & FIB_CONTEXT_FLAG) && + (fib->callback_data == cmd)) { + fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT; + cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; + ret = SUCCESS; } break; case TEST_UNIT_READY: @@ -792,27 +780,14 @@ static int aac_eh_abort(struct scsi_cmnd* cmd) * Mark associated FIB to not complete, * eh handler does this */ - for (count = 0; - count < (host->can_queue + AAC_NUM_MGT_FIB); - ++count) { - struct scsi_cmnd *command; - struct fib *fib = &aac->fibs[count]; - - command = fib->callback_data; - - if ((fib->hw_fib_va->header.XferState & - cpu_to_le32 - (Async | NoResponseExpected)) && - (fib->flags & FIB_CONTEXT_FLAG) && - ((command)) && - (command->device == cmd->device)) { - fib->flags |= - FIB_CONTEXT_FLAG_TIMED_OUT; - command->SCp.phase = - AAC_OWNER_ERROR_HANDLER; - if (command == cmd) - ret = SUCCESS; - } + fib = &aac->fibs[cmd->request->tag]; + if ((fib->hw_fib_va->header.XferState & + cpu_to_le32(Async | NoResponseExpected)) && + (fib->flags & FIB_CONTEXT_FLAG) && + (fib->callback_data == cmd)) { + fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT; + cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; + ret = SUCCESS; } break; } @@ -1020,6 +995,36 @@ static int aac_eh_target_reset(struct scsi_cmnd *cmd) return ret; } +static bool aac_eh_bus_reset_iter(struct scsi_cmnd *cmd, void *data, + bool reserved) +{ + struct Scsi_Host *host = cmd->device->host; + struct aac_dev *aac = (struct aac_dev *)host->hostdata; + struct fib *fib = &aac->fibs[cmd->request->tag]; + int *cmd_bus = data; + + if (fib->hw_fib_va->header.XferState && + (fib->flags & FIB_CONTEXT_FLAG) && + (fib->flags & FIB_CONTEXT_FLAG_SCSI_CMD)) { + struct aac_hba_map_info *info; + u32 bus, cid; + + if (cmd != (struct scsi_cmnd *)fib->callback_data) + return true; + bus = aac_logical_to_phys(scmd_channel(cmd)); + if (bus != *cmd_bus) + return true; + cid = scmd_id(cmd); + info = &aac->hba_map[bus][cid]; + if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS || + info->devtype != AAC_DEVTYPE_NATIVE_RAW) { + fib->flags |= FIB_CONTEXT_FLAG_EH_RESET; + cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; + } + } + return true; +} + /* * aac_eh_bus_reset - Bus reset command handling * @scsi_cmd: SCSI command block causing the reset @@ -1037,29 +1042,7 @@ static int aac_eh_bus_reset(struct scsi_cmnd* cmd) cmd_bus = aac_logical_to_phys(scmd_channel(cmd)); /* Mark the assoc. FIB to not complete, eh handler does this */ - for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) { - struct fib *fib = &aac->fibs[count]; - - if (fib->hw_fib_va->header.XferState && - (fib->flags & FIB_CONTEXT_FLAG) && - (fib->flags & FIB_CONTEXT_FLAG_SCSI_CMD)) { - struct aac_hba_map_info *info; - u32 bus, cid; - - cmd = (struct scsi_cmnd *)fib->callback_data; - bus = aac_logical_to_phys(scmd_channel(cmd)); - if (bus != cmd_bus) - continue; - cid = scmd_id(cmd); - info = &aac->hba_map[bus][cid]; - if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS || - info->devtype != AAC_DEVTYPE_NATIVE_RAW) { - fib->flags |= FIB_CONTEXT_FLAG_EH_RESET; - cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER; - } - } - } - + scsi_host_busy_iter(host, aac_eh_bus_reset_iter, &cmd_bus); pr_err("%s: Host bus reset request. SCSI hang ?\n", AAC_DRIVERNAME); /* -- 2.16.4 ^ permalink raw reply related [flat|nested] 38+ messages in thread
* Re: [PATCHv6 00/21] scsi: enable reserved commands for LLDDs 2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke ` (20 preceding siblings ...) 2020-07-03 13:01 ` [PATCH 21/21] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke @ 2020-10-27 15:27 ` John Garry 2020-10-27 15:53 ` Hannes Reinecke 21 siblings, 1 reply; 38+ messages in thread From: John Garry @ 2020-10-27 15:27 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang, Kashyap Desai On 03/07/2020 14:01, Hannes Reinecke wrote: > Hi all, > > quite some drivers use internal commands for various purposes, most > commonly sending TMFs or querying the HBA status. > While these commands use the same submission mechanism than normal > I/O commands, they will not be counted as outstanding commands, > requiring those drivers to implement their own mechanism to figure > out outstanding commands. > The block layer already has the concept of 'reserved' tags for > precisely this purpose, namely non-I/O tags which live off a separate > tag pool. That guarantees that these commands can always be sent, > and won't be influenced by tag starvation from the I/O tag pool. > This patchset enables the use of reserved tags for the SCSI midlayer > by allocating a virtual LUN for the HBA itself which just serves > as a resource to allocate valid tags from. > This removes quite some hacks which were required for some > drivers (eg. fnic or snic), and allows the use of tagset > iterators within the drivers. > > The entire patchset can be found at > > git://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git reserved-tags.v6 > Hi Hannes, Any chance you can repost this series? I'm being a bit of a nag :) It now looks like some drivers may also need this for supporting io_uring in SCSI mid-layer: https://lore.kernel.org/linux-scsi/20201015133541.60400-1-kashyap.desai@broadcom.com/ And it's also useful for the runtime PM which we were supporting for hisi_sas, to track IOs. I know that you were hoping for a few more reviews, but I don't think that they are coming for v6 now. And at least I gave a few comments here, like: https://lore.kernel.org/linux-scsi/b03c1256-8255-5e7f-dda3-df036aaef812@huawei.com/ And there were other comments. Please let me know. Cheers, John ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCHv6 00/21] scsi: enable reserved commands for LLDDs 2020-10-27 15:27 ` [PATCHv6 00/21] scsi: enable reserved commands for LLDDs John Garry @ 2020-10-27 15:53 ` Hannes Reinecke 2020-10-27 16:59 ` John Garry 0 siblings, 1 reply; 38+ messages in thread From: Hannes Reinecke @ 2020-10-27 15:53 UTC (permalink / raw) To: John Garry, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang, Kashyap Desai On 10/27/20 4:27 PM, John Garry wrote: > On 03/07/2020 14:01, Hannes Reinecke wrote: >> Hi all, >> >> quite some drivers use internal commands for various purposes, most >> commonly sending TMFs or querying the HBA status. >> While these commands use the same submission mechanism than normal >> I/O commands, they will not be counted as outstanding commands, >> requiring those drivers to implement their own mechanism to figure >> out outstanding commands. >> The block layer already has the concept of 'reserved' tags for >> precisely this purpose, namely non-I/O tags which live off a separate >> tag pool. That guarantees that these commands can always be sent, >> and won't be influenced by tag starvation from the I/O tag pool. >> This patchset enables the use of reserved tags for the SCSI midlayer >> by allocating a virtual LUN for the HBA itself which just serves >> as a resource to allocate valid tags from. >> This removes quite some hacks which were required for some >> drivers (eg. fnic or snic), and allows the use of tagset >> iterators within the drivers. >> >> The entire patchset can be found at >> >> git://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git >> reserved-tags.v6 >> > > Hi Hannes, > > Any chance you can repost this series? I'm being a bit of a nag :) > > It now looks like some drivers may also need this for supporting > io_uring in SCSI mid-layer: > https://lore.kernel.org/linux-scsi/20201015133541.60400-1-kashyap.desai@broadcom.com/ > > > And it's also useful for the runtime PM which we were supporting for > hisi_sas, to track IOs. > > I know that you were hoping for a few more reviews, but I don't think > that they are coming for v6 now. And at least I gave a few comments > here, like: > > https://lore.kernel.org/linux-scsi/b03c1256-8255-5e7f-dda3-df036aaef812@huawei.com/ > > > And there were other comments. > That was actually on the list of things to do next, ie rebasing this series now that the shared tags patchset is in. Oh, and I do have an updated hpsa patch, which doesn't crash on my systems. Will be posting that one separately. Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCHv6 00/21] scsi: enable reserved commands for LLDDs 2020-10-27 15:53 ` Hannes Reinecke @ 2020-10-27 16:59 ` John Garry 2020-10-27 17:07 ` Hannes Reinecke 0 siblings, 1 reply; 38+ messages in thread From: John Garry @ 2020-10-27 16:59 UTC (permalink / raw) To: Hannes Reinecke, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang, Kashyap Desai On 27/10/2020 15:53, Hannes Reinecke wrote: >> > That was actually on the list of things to do next, ie rebasing this > series now that the shared tags patchset is in. > Sounds good. > Oh, and I do have an updated hpsa patch, which doesn't crash on my > systems. Will be posting that one separately. I always thought that change (switch to MQ) looked better with $subject series, but I'll leave that to you and Don. cheers, John ^ permalink raw reply [flat|nested] 38+ messages in thread
* Re: [PATCHv6 00/21] scsi: enable reserved commands for LLDDs 2020-10-27 16:59 ` John Garry @ 2020-10-27 17:07 ` Hannes Reinecke 0 siblings, 0 replies; 38+ messages in thread From: Hannes Reinecke @ 2020-10-27 17:07 UTC (permalink / raw) To: John Garry, Martin K. Petersen Cc: Christoph Hellwig, James Bottomley, Bart van Assche, Don Brace, linux-scsi, chenxiang, Kashyap Desai On 10/27/20 5:59 PM, John Garry wrote: > On 27/10/2020 15:53, Hannes Reinecke wrote: >>> >> That was actually on the list of things to do next, ie rebasing this >> series now that the shared tags patchset is in. >> > > Sounds good. > >> Oh, and I do have an updated hpsa patch, which doesn't crash on my >> systems. Will be posting that one separately. > > I always thought that change (switch to MQ) looked better with $subject > series, but I'll leave that to you and Don. > Yes, same here; with reserved commands hpsa becomes _much_ easier. Now I only need to figure out a way how to handle consecutive tags; for some drivers not only the command needs a tag, but the sgls also, thereby completely messing up our mq tags logic. So to map those we'd need to allocate _several_ tags for one command, _and_ these additional tags won't be of 'struct request'. Maybe we can do some tag chaining ... But I'll be updating the patchset. Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer ^ permalink raw reply [flat|nested] 38+ messages in thread
end of thread, other threads:[~2020-12-07 15:52 UTC | newest]
Thread overview: 38+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-03 13:01 [PATCHv6 00/21] scsi: enable reserved commands for LLDDs Hannes Reinecke
2020-07-03 13:01 ` [PATCH 01/21] scsi: drop gdth driver Hannes Reinecke
2020-07-03 13:01 ` [PATCH 02/21] block: add flag for internal commands Hannes Reinecke
2020-07-08 9:27 ` John Garry
2020-07-09 20:02 ` Jens Axboe
2020-07-17 10:32 ` John Garry
2020-07-03 13:01 ` [PATCH 03/21] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke
2020-07-07 13:54 ` John Garry
2020-11-16 8:56 ` John Garry
2020-11-16 9:03 ` Hannes Reinecke
2020-11-18 12:28 ` John Garry
2020-12-07 10:15 ` John Garry
2020-12-07 15:52 ` Hannes Reinecke
2020-07-03 13:01 ` [PATCH 04/21] fnic: use internal commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 05/21] fnic: use scsi_host_busy_iter() to traverse commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 06/21] fnic: check for started requests in fnic_wq_copy_cleanup_handler() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 07/21] scsi: use real inquiry data when initialising devices Hannes Reinecke
2020-07-03 13:01 ` [PATCH 08/21] scsi: Use dummy inquiry data for the host device Hannes Reinecke
2020-07-03 13:01 ` [PATCH 09/21] scsi: revamp host device handling Hannes Reinecke
2020-07-03 13:01 ` [PATCH 10/21] snic: use reserved commands Hannes Reinecke
2020-07-08 11:08 ` John Garry
2020-07-08 11:18 ` Hannes Reinecke
2020-07-03 13:01 ` [PATCH 11/21] snic: use tagset iter for traversing commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 12/21] snic: check for started requests in snic_hba_reset_cmpl_handler() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 13/21] scsi: implement reserved command handling Hannes Reinecke
2020-07-08 9:39 ` John Garry
2020-07-03 13:01 ` [PATCH 14/21] hpsa: move hpsa_hba_inquiry after scsi_add_host() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 15/21] hpsa: use reserved commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 16/21] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2020-07-03 13:01 ` [PATCH 17/21] hpsa: drop refcount field from CommandList Hannes Reinecke
2020-07-03 13:01 ` [PATCH 18/21] aacraid: move scsi_add_host() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 19/21] aacraid: store target id in host_scribble Hannes Reinecke
2020-07-03 13:01 ` [PATCH 20/21] aacraid: use scsi_get_internal_cmd() Hannes Reinecke
2020-07-03 13:01 ` [PATCH 21/21] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2020-10-27 15:27 ` [PATCHv6 00/21] scsi: enable reserved commands for LLDDs John Garry
2020-10-27 15:53 ` Hannes Reinecke
2020-10-27 16:59 ` John Garry
2020-10-27 17:07 ` Hannes Reinecke
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.