* [PATCHSET 15/25] add support for PC-9800 architecture (parport)
@ 2002-10-18 16:56 Osamu Tomita
0 siblings, 0 replies; only message in thread
From: Osamu Tomita @ 2002-10-18 16:56 UTC (permalink / raw)
To: LKML; +Cc: Linus Torvalds
This is part 15/26 of patchset for add support NEC PC-9800 architecture,
against 2.5.43.
Summary:
parallel drivers
- add new driver for support legacy PC-9800 printer port.
- IO address change (parport_pc)
- IRQ number change (parport_pc)
diffstat:
drivers/char/Config.in | 6
drivers/char/lp_old98.c | 580 +++++++++++++++++++++++++++++++++++++++++++
drivers/parport/parport_pc.c | 73 +++++
include/linux/parport_pc.h | 10
4 files changed, 669 insertions(+)
diff -urN linux/drivers/parport/parport_pc.c linux98/drivers/parport/parport_pc.c
--- linux/drivers/parport/parport_pc.c Sat Jul 27 11:58:37 2002
+++ linux98/drivers/parport/parport_pc.c Mon Jul 29 09:27:07 2002
@@ -331,6 +331,11 @@
unsigned char parport_pc_read_status(struct parport *p)
{
+#ifdef CONFIG_PC9800
+ if (p->base == 0x40)
+ return ((inb(0x42) & 0x04) << 5) | PARPORT_STATUS_ERROR;
+ else
+#endif /* CONFIG_PC9800 */
return inb (STATUS (p));
}
@@ -386,6 +391,7 @@
}
#ifdef CONFIG_PARPORT_1284
+#ifndef CONFIG_PC9800
static size_t parport_pc_epp_read_data (struct parport *port, void *buf,
size_t length, int flags)
{
@@ -586,6 +592,7 @@
return written;
}
+#endif /* !CONFIG_PC9800 */
#endif /* IEEE 1284 support */
#ifdef CONFIG_PARPORT_PC_FIFO
@@ -1643,6 +1650,11 @@
{
unsigned char r, w;
+#ifdef CONFIG_PC9800
+ /* All driver must support this mode */
+ if (pb->base == 0x40)
+ return PARPORT_MODE_PCSPP;
+#endif
/*
* first clear an eventually pending EPP timeout
* I (sailer@ife.ee.ethz.ch) have an SMSC chipset
@@ -1776,6 +1788,10 @@
{
int ok = 0;
+#ifdef CONFIG_PC9800
+ if (pb->base == 0x40)
+ return 0; /* never support */
+#endif
clear_epp_timeout(pb);
/* try to tri-state the buffer */
@@ -1907,6 +1923,10 @@
config & 0x80 ? "Level" : "Pulses");
configb = inb (CONFIGB (pb));
+#ifdef CONFIG_PC9800
+ if ((CONFIGB(pb) == 0x14d) && ((configb & 0x38) == 0x30))
+ configb = (configb & ~0x38) | 0x28; /* IRQ 14 */
+#endif
printk (KERN_DEBUG "0x%lx: ECP port cfgA=0x%02x cfgB=0x%02x\n",
pb->base, config, configb);
printk (KERN_DEBUG "0x%lx: ECP settings irq=", pb->base);
@@ -1946,6 +1966,7 @@
/* EPP mode detection */
+#ifndef CONFIG_PC9800
static int __devinit parport_EPP_supported(struct parport *pb)
{
const struct parport_pc_private *priv = pb->private_data;
@@ -2019,6 +2040,7 @@
return result;
}
+#endif /* !CONFIG_PC9800 */
#else /* No IEEE 1284 support */
@@ -2047,6 +2069,10 @@
ECR_WRITE (pb, ECR_CNF << 5); /* Configuration MODE */
intrLine = (inb (CONFIGB (pb)) >> 3) & 0x07;
+#ifdef CONFIG_PC9800
+ if ((CONFIGB(pb) == 0x14d) && (intrLine == 6))
+ intrLine = 5; /* IRQ 14 */
+#endif
irq = lookup[intrLine];
ECR_WRITE (pb, oecr);
@@ -2211,7 +2237,16 @@
struct parport tmp;
struct parport *p = &tmp;
int probedirq = PARPORT_IRQ_NONE;
+#ifdef CONFIG_PC9800
+ if (base == 0x40) {
+ if (check_region(base, -7))
+ return NULL;
+ } else {
+#endif
if (check_region(base, 3)) return NULL;
+#ifdef CONFIG_PC9800
+ }
+#endif
priv = kmalloc (sizeof (struct parport_pc_private), GFP_KERNEL);
if (!priv) {
printk (KERN_DEBUG "parport (0x%lx): no memory!\n", base);
@@ -2244,12 +2279,14 @@
if (base_hi && !check_region(base_hi,3))
parport_ECR_present(p);
+#ifndef CONFIG_PC9800 /* EPP mode is not supported ? */
if (base != 0x3bc) {
if (!check_region(base+0x3, 5)) {
if (!parport_EPP_supported(p))
parport_ECPEPP_supported(p);
}
}
+#endif
if (!parport_SPP_supported (p)) {
/* No port. */
kfree (priv);
@@ -2342,6 +2379,11 @@
printk(KERN_INFO "%s: irq %d detected\n", p->name, probedirq);
parport_proc_register(p);
+#ifdef CONFIG_PC9800
+ if (p->base == 0x40)
+ request_region(p->base, -7, p->name);
+ else
+#endif
request_region (p->base, 3, p->name);
if (p->size > 3)
request_region (p->base + 3, p->size - 3, p->name);
@@ -2412,6 +2454,11 @@
free_dma(p->dma);
if (p->irq != PARPORT_IRQ_NONE)
free_irq(p->irq, p);
+#ifdef CONFIG_PC9800
+ if (p->base == 0x40)
+ release_region(p->base, -7);
+ else
+#endif
release_region(p->base, 3);
if (p->size > 3)
release_region(p->base + 3, p->size - 3);
@@ -2974,12 +3021,38 @@
{
int count = 0;
+#ifndef CONFIG_PC9800
if (parport_pc_probe_port(0x3bc, 0x7bc, autoirq, autodma, NULL))
count++;
if (parport_pc_probe_port(0x378, 0x778, autoirq, autodma, NULL))
count++;
if (parport_pc_probe_port(0x278, 0x678, autoirq, autodma, NULL))
count++;
+#else /* CONFIG_PC9800 */
+ /* Set default resource settings for old style parport */
+ int base = 0x40;
+ int base_hi = 0;
+ int irq = PARPORT_IRQ_NONE;
+ int dma = PARPORT_DMA_NONE;
+
+ /* Check PC9800 old style parport */
+ outb(inb(0x149) & ~0x10, 0x149); /* disable IEEE1284 */
+#if 1 /* force using old style. debug by tomita */
+ if (!(inb(0x149) & 0x10)) { /* IEEE1284 disabled ? */
+ outb(inb(0x149) | 0x10, 0x149); /* enable IEEE1284 */
+ if (inb(0x149) & 0x10) { /* IEEE1284 enabled ? */
+ /* Set default settings for IEEE1284 parport */
+ base = 0x140;
+ base_hi = 0x14c;
+ irq = 14;
+ /* dma = PARPORT_DMA_NONE; */
+ }
+ }
+#endif /* force using old style. debug by tomita */
+
+ if (parport_pc_probe_port(base, base_hi, irq, dma, NULL))
+ count++;
+#endif /* !CONFIG_PC9800 */
return count;
}
diff -urN linux/include/linux/parport_pc.h linux98/include/linux/parport_pc.h
--- linux/include/linux/parport_pc.h Tue Jun 12 11:15:27 2001
+++ linux98/include/linux/parport_pc.h Sun Aug 19 14:13:09 2001
@@ -119,6 +119,11 @@
#endif
ctr = (ctr & ~mask) ^ val;
ctr &= priv->ctr_writable; /* only write writable bits. */
+#ifdef CONFIG_PC9800
+ if (p->base == 0x40 && ((priv->ctr) ^ ctr) & 0x01)
+ outb(0x0e | ((ctr & 0x01) ^ 0x01), 0x46);
+ else
+#endif /* CONFIG_PC9800 */
outb (ctr, CONTROL (p));
priv->ctr = ctr; /* Update soft copy */
return ctr;
@@ -191,6 +196,11 @@
extern __inline__ unsigned char parport_pc_read_status(struct parport *p)
{
+#ifdef CONFIG_PC9800
+ if (p->base == 0x40)
+ return ((inb(0x42) & 0x04) << 5) | PARPORT_STATUS_ERROR;
+ else
+#endif /* CONFIG_PC9800 */
return inb(STATUS(p));
}
diff -urN linux/drivers/char/Config.in linux98/drivers/char/Config.in
--- linux/drivers/char/Config.in Wed Oct 16 13:20:34 2002
+++ linux98/drivers/char/Config.in Wed Oct 16 15:23:15 2002
@@ -85,6 +85,12 @@
if [ "$CONFIG_PPC_PSERIES" = "y" ]; then
bool 'pSeries Hypervisor Virtual Console support' CONFIG_HVC_CONSOLE
fi
+if [ "$CONFIG_PC9800" = "y" -a "$CONFIG_PARPORT" != "y" ]; then
+ tristate 'NEC PC-9800 old-style printer port support' CONFIG_PC9800_OLDLP
+ if [ "$CONFIG_PC9800_OLDLP" != "n" ]; then
+ bool ' Support for console on line printer' CONFIG_PC9800_OLDLP_CONSOLE
+ fi
+fi
source drivers/i2c/Config.in
diff -urN linux/drivers/char/lp_old98.c linux98/drivers/char/lp_old98.c
--- linux/drivers/char/lp_old98.c Thu Jan 1 09:00:00 1970
+++ linux98/drivers/char/lp_old98.c Fri Aug 17 21:50:17 2001
@@ -0,0 +1,580 @@
+/*
+ * linux/drivers/char/lp_old98.c
+ *
+ * printer port driver for ancient PC-9800s with no bidirectional port support
+ *
+ * Copyright (C) 1998,99 Kousuke Takai <tak@kmc.kyoto-u.ac.jp>,
+ * Kyoto University Microcomputer Club
+ *
+ * This driver is based on and has compatibility with `lp.c',
+ * generic PC printer port driver.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/sched.h>
+#include <linux/malloc.h>
+#include <linux/ioport.h>
+#include <linux/fcntl.h>
+#include <linux/delay.h>
+#include <linux/console.h>
+#include <linux/version.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#if !defined(CONFIG_PC9800) && !defined(CONFIG_PC98)
+#error This driver works only for NEC PC-9800 series
+#endif
+
+#if LINUX_VERSION_CODE < 0x20200
+# define LP_STATS
+#endif
+
+#if LINUX_VERSION_CODE >= 0x2030b
+# define CONFIG_RESOURCE98
+#endif
+
+#include <linux/lp.h>
+
+/*
+ * I/O port numbers
+ */
+#define LP_PORT_DATA 0x40
+#define LP_PORT_STATUS (LP_PORT_DATA+2)
+#define LP_PORT_STROBE (LP_PORT_DATA+4)
+#define LP_PORT_CONTROL (LP_PORT_DATA+6)
+
+#define LP_PORT_H98MODE 0x0448
+#define LP_PORT_EXTMODE 0x0149
+
+/*
+ * bit mask for I/O
+ */
+#define LP_MASK_nBUSY (1 << 2)
+#define LP_MASK_nSTROBE (1 << 7)
+
+#define LP_CONTROL_ASSERT_STROBE (0x0e)
+#define LP_CONTROL_NEGATE_STROBE (0x0f)
+
+/*
+ * Acceptable maximum value for non-privileged user for LPCHARS ioctl.
+ */
+#define LP_CHARS_NOPRIV_MAX 65535
+
+#define DC1 '\x11'
+#define DC3 '\x13'
+
+/* PC-9800s have at least and at most one old-style printer port. */
+static struct lp_struct lp = {
+ /* Following `TAG: INITIALIZER' notations are GNU CC extension. */
+ flags: LP_EXIST | LP_ABORTOPEN,
+ chars: LP_INIT_CHAR,
+ time: LP_INIT_TIME,
+ wait: LP_INIT_WAIT,
+};
+
+static int dc1_check = 1000;
+
+#undef LP_OLD98_DEBUG
+
+#ifndef __udelay_val
+# define __udelay_val current_cpu_data.loops_per_sec
+#endif
+
+static inline void nanodelay(unsigned long nanosecs) /* Evil ? */
+{
+ if( nanosecs ) {
+ nanosecs *= (unsigned long)((1ULL << 40) / 1000000000ULL);
+ __asm__("mul%L2 %2"
+ : "=d"(nanosecs) : "a"(nanosecs), "g"(__udelay_val));
+ __delay(nanosecs >> 8);
+ }
+}
+
+#ifdef CONFIG_PC9800_OLDLP_CONSOLE
+static struct console lp_old98_console; /* defined later */
+static __typeof__(lp_old98_console.flags) saved_console_flags;
+#endif
+
+static DECLARE_WAIT_QUEUE_HEAD (lp_old98_waitq);
+
+static void lp_old98_timer_function(unsigned long data);
+
+static void lp_old98_timer_function(unsigned long data)
+{
+ if (inb(LP_PORT_STATUS) & LP_MASK_nBUSY)
+ wake_up_interruptible(&lp_old98_waitq);
+ else {
+ struct timer_list *t = (struct timer_list *) data;
+
+ t->expires = jiffies + 1;
+ add_timer(t);
+ }
+}
+
+static inline int
+lp_old98_wait_ready(void)
+{
+ struct timer_list timer;
+
+ init_timer(&timer);
+ timer.function = lp_old98_timer_function;
+ timer.expires = jiffies + 1;
+ timer.data = (unsigned long) &timer;
+ add_timer(&timer);
+ interruptible_sleep_on(&lp_old98_waitq);
+ del_timer(&timer);
+ return signal_pending(current);
+}
+
+static inline int lp_old98_char(char lpchar)
+{
+ unsigned long count = 0;
+#ifdef LP_STATS
+ int tmp;
+#endif
+
+ while( !(inb(LP_PORT_STATUS) & LP_MASK_nBUSY) ) {
+ count++;
+ if (count >= lp.chars)
+ return 0;
+ }
+
+ outb(lpchar, LP_PORT_DATA);
+
+#ifdef LP_STATS
+ /*
+ * Update lp statsistics here (and between next two outb()'s).
+ * Time to compute it is part of storobe delay.
+ */
+ if( count > lp.stats.maxwait ) {
+#ifdef LP_OLD98_DEBUG
+ printk(KERN_DEBUG "lp_old98: success after %d counts.\n",
+ count);
+#endif
+ lp.stats.maxwait = count;
+ }
+ count *= 256;
+ tmp = count - lp.stats.meanwait;
+ if( tmp < 0 )
+ tmp = -tmp;
+#endif
+ nanodelay(lp.wait);
+
+ /* negate PSTB# (activate strobe) */
+ outb(LP_CONTROL_ASSERT_STROBE, LP_PORT_CONTROL);
+
+#ifdef LP_STATS
+ lp.stats.meanwait = (255 * lp.stats.meanwait + count + 128) / 256;
+ lp.stats.mdev = (127 * lp.stats.mdev + tmp + 64) / 128;
+ lp.stats.chars++;
+#endif
+
+ nanodelay(lp.wait);
+
+ /* assert PSTB# (deactivate strobe) */
+ outb(LP_CONTROL_NEGATE_STROBE, LP_PORT_CONTROL);
+
+ return 1;
+}
+
+#if LINUX_VERSION_CODE < 0x20200
+static long lp_old98_write(struct inode * inode, struct file * file,
+ const char * buf, unsigned long count)
+#else
+static ssize_t lp_old98_write(struct file * file,
+ const char * buf, size_t count,
+ loff_t *dummy)
+#endif
+{
+ unsigned long total_bytes_written = 0;
+
+ if (!access_ok(VERIFY_READ, buf, count))
+ return -EFAULT;
+
+#ifdef LP_STATS
+ if( jiffies - lp.lastcall > lp.time )
+ lp.runchars = 0;
+ lp.lastcall = jiffies;
+#endif
+
+ do {
+ unsigned long bytes_written = 0;
+ unsigned long copy_size
+ = (count < LP_BUFFER_SIZE ? count : LP_BUFFER_SIZE);
+
+ if (__copy_from_user(lp.lp_buffer, buf, copy_size))
+ return -EFAULT;
+
+ while( bytes_written < copy_size ) {
+ if( lp_old98_char(lp.lp_buffer[bytes_written]) )
+ bytes_written++;
+ else {
+#ifdef LP_STATS
+ int rc = lp.runchars + bytes_written;
+
+ if( rc > lp.stats.maxrun )
+ lp.stats.maxrun = rc;
+
+ lp.stats.sleeps++;
+#endif
+#ifdef LP_OLD98_DEBUG
+ printk(KERN_DEBUG
+ "lp_old98: sleeping at %d characters"
+ " for %d jiffies\n",
+ lp.runchars, lp.time);
+ lp.runchars = 0;
+#endif
+ if (lp_old98_wait_ready())
+ return ((total_bytes_written
+ + bytes_written)
+ ? : -EINTR);
+ }
+ }
+ total_bytes_written += bytes_written;
+ buf += bytes_written;
+#ifdef LP_STATS
+ lp.runchars += bytes_written;
+#endif
+ count -= bytes_written;
+ } while( count > 0 );
+
+ return total_bytes_written;
+}
+
+static long long lp_old98_llseek(struct file * file,
+ long long offset, int whence)
+{
+ return -ESPIPE; /* cannot seek like pipe */
+}
+
+static int lp_old98_open(struct inode * inode, struct file * file)
+{
+ if( MINOR(inode->i_rdev) != 0 )
+ return -ENXIO;
+ if( lp.flags & LP_BUSY )
+ return -EBUSY;
+
+ if ((lp.lp_buffer = kmalloc(LP_BUFFER_SIZE, GFP_KERNEL)) == NULL)
+ return -ENOMEM;
+
+ if (dc1_check && (lp.flags & LP_ABORTOPEN)
+ && !(file->f_flags & O_NONBLOCK) ) {
+ /*
+ * Check whether printer is on-line.
+ * PC-9800's old style port have only BUSY# as status input,
+ * so that it is impossible to distinguish that the printer is
+ * ready and that the printer is off-line or not connected
+ * (in both case BUSY# is in the same state). So:
+ *
+ * (1) output DC1 (0x11) to printer port and do strobe.
+ * (2) watch BUSY# line for a while. If BUSY# is pulled
+ * down, the printer will be ready. Otherwise,
+ * it will be off-line (or not connected, or power-off,
+ * ...).
+ *
+ * The source of this procedure:
+ * Terumasa KODAKA, Kazufumi SHIMIZU, Yu HAYAMI:
+ * `PC-9801 Super Technique', Ascii, 1992.
+ */
+ int count;
+ unsigned long eflags;
+
+ save_flags(eflags);
+ cli(); /* interrupts while check is fairly bad */
+
+ if (!lp_old98_char(DC1)) {
+ restore_flags(eflags);
+ return -EBUSY;
+ }
+ count = (unsigned int)dc1_check > 10000 ? 10000 : dc1_check;
+ while( inb(LP_PORT_STATUS) & LP_MASK_nBUSY )
+ if( --count == 0 ) {
+ restore_flags(eflags);
+ return -ENODEV;
+ }
+ restore_flags(eflags);
+ }
+
+ lp.flags |= LP_BUSY;
+
+#ifdef CONFIG_PC9800_OLDLP_CONSOLE
+ saved_console_flags = lp_old98_console.flags;
+ lp_old98_console.flags &= ~CON_ENABLED;
+#endif
+
+ MOD_INC_USE_COUNT;
+ return 0;
+}
+
+static int lp_old98_release(struct inode * inode, struct file * file)
+{
+ kfree(lp.lp_buffer);
+ lp.lp_buffer = NULL;
+ lp.flags &= ~LP_BUSY;
+#ifdef CONFIG_PC9800_OLDLP_CONSOLE
+ lp_old98_console.flags = saved_console_flags;
+#endif
+ MOD_DEC_USE_COUNT;
+ return 0;
+}
+
+static int lp_old98_init_device(void)
+{
+ unsigned char data;
+
+ if( (data = inb(LP_PORT_EXTMODE)) != 0xFF && (data & 0x10) ) {
+ printk(KERN_INFO
+ "lp_old98: shutting down extended parallel port mode...\n");
+ outb(data & ~0x10, LP_PORT_EXTMODE);
+ }
+#ifdef PC98_HW_H98
+ if( (pc98_hw_flags & PC98_HW_H98)
+ && ((data = inb(LP_PORT_H98MODE)) & 0x01) ) {
+ printk(KERN_INFO
+ "lp_old98: shutting down H98 full centronics mode...\n");
+ outb(data & ~0x01, LP_PORT_H98MODE);
+ }
+#endif
+ return 0;
+}
+
+/*
+ * Many use of `put_user' macro enlarge code size...
+ */
+static /* not inline */ int lp_old98_put_user(int val, int *addr)
+{
+ return put_user(val, addr);
+}
+
+static int lp_old98_ioctl(struct inode *inode, struct file *file,
+ unsigned int command, unsigned long arg)
+{
+ int retval = 0;
+
+ switch ( command ) {
+ case LPTIME:
+ lp.time = arg * HZ/100;
+ break;
+ case LPCHAR:
+ lp.chars = arg;
+ break;
+ case LPABORT:
+ if( arg )
+ lp.flags |= LP_ABORT;
+ else
+ lp.flags &= ~LP_ABORT;
+ break;
+ case LPABORTOPEN:
+ if( arg )
+ lp.flags |= LP_ABORTOPEN;
+ else
+ lp.flags &= ~LP_ABORTOPEN;
+ break;
+ case LPCAREFUL:
+ /* do nothing */
+ break;
+ case LPWAIT:
+ lp.wait = arg;
+ break;
+ case LPGETIRQ:
+ retval = lp_old98_put_user(0, (int *)arg);
+ break;
+ case LPGETSTATUS:
+ /*
+ * convert PC-9800's status to IBM PC's one, so that tunelp(8)
+ * works in the same way on this driver.
+ */
+ retval = lp_old98_put_user((inb(LP_PORT_STATUS)
+ & LP_MASK_nBUSY)
+ ? (LP_PBUSY | LP_PERRORP)
+ : LP_PERRORP,
+ (int *)arg);
+ break;
+ case LPRESET:
+ retval = lp_old98_init_device();
+ break;
+#ifdef LP_STATS
+ case LPGETSTATS:
+ if( copy_to_user((struct lp_stats *)arg, &lp.stats,
+ sizeof(struct lp_stats)) )
+ retval = -EFAULT;
+ else if (suser())
+ memset(&lp.stats, 0, sizeof(struct lp_stats));
+ break;
+#endif
+ case LPGETFLAGS:
+ retval = lp_old98_put_user(lp.flags, (int *)arg);
+ break;
+ case LPSETIRQ:
+ default:
+ retval = -EINVAL;
+ }
+ return retval;
+}
+
+static struct file_operations lp_old98_fops = {
+ owner: THIS_MODULE,
+ llseek: lp_old98_llseek,
+ read: NULL,
+ write: lp_old98_write,
+ ioctl: lp_old98_ioctl,
+ open: lp_old98_open,
+ release:lp_old98_release,
+};
+\f
+/*
+ * Support for console on lp_old98
+ */
+#ifdef CONFIG_PC9800_OLDLP_CONSOLE
+
+static inline void io_delay(void)
+{
+ unsigned char dummy; /* actually not output */
+
+ asm volatile ("out%B0 %0,%1" : "=a"(dummy) : "N"(0x5f));
+}
+
+static void lp_old98_console_write(struct console *console,
+ const char *s, unsigned int count)
+{
+ int i;
+ static unsigned int timeout_run = 0;
+
+ while (count) {
+ /* wait approx 1.2 seconds */
+ for (i = 2000000;
+ !(inb(LP_PORT_STATUS) & LP_MASK_nBUSY);
+ io_delay())
+ if (!--i) {
+ if (++timeout_run >= 10)
+ /* disable forever... */
+ console->flags &= ~CON_ENABLED;
+ return;
+ }
+
+ timeout_run = 0;
+
+ if (*s == '\n') {
+ outb('\r', LP_PORT_DATA);
+ io_delay();
+ io_delay();
+ outb(LP_CONTROL_ASSERT_STROBE, LP_PORT_CONTROL);
+ io_delay();
+ io_delay();
+ outb(LP_CONTROL_NEGATE_STROBE, LP_PORT_CONTROL);
+ io_delay();
+ io_delay();
+ for (i = 1000000;
+ !(inb(LP_PORT_STATUS) & LP_MASK_nBUSY);
+ io_delay())
+ if (!--i)
+ return;
+ }
+
+ outb(*s++, LP_PORT_DATA);
+ io_delay();
+ io_delay();
+ outb(LP_CONTROL_ASSERT_STROBE, LP_PORT_CONTROL);
+ io_delay();
+ io_delay();
+ outb(LP_CONTROL_NEGATE_STROBE, LP_PORT_CONTROL);
+ io_delay();
+ io_delay();
+
+ --count;
+ }
+}
+
+static kdev_t lp_old98_console_device(struct console *console)
+{
+ return MKDEV(LP_MAJOR, 0);
+}
+
+static struct console lp_old98_console = {
+ name: "lp_old98",
+ write: lp_old98_console_write,
+ device: lp_old98_console_device,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+#endif /* console on lp_old98 */
+\f
+#ifdef MODULE
+#define lp_old98_init init_module
+#endif
+
+int __init lp_old98_init(void)
+{
+ if (check_region(LP_PORT_DATA, 1) || check_region(LP_PORT_STATUS, 1)
+ || check_region(LP_PORT_STROBE, 1)
+#ifdef PC98_HW_H98
+ || ((pc98_hw_flags & PC98_HW_H98)
+ && check_region(LP_PORT_H98MODE, 1))
+#endif
+ || check_region(LP_PORT_EXTMODE, 1)) {
+ printk(KERN_ERR
+ "lp_old98: I/O ports already occupied, giving up.\n");
+ return -EBUSY;
+ }
+ if (register_chrdev(LP_MAJOR, "lp", &lp_old98_fops)) {
+ printk(KERN_ERR "lp_old98: unable to get major %d\n",
+ LP_MAJOR);
+ return -EBUSY;
+ }
+
+#ifdef CONFIG_PC9800_OLDLP_CONSOLE
+ register_console(&lp_old98_console);
+ printk(KERN_INFO "lp_old98: console ready\n");
+#endif
+
+#if LINUX_VERSION_CODE < 0x20200
+ request_region(LP_PORT_DATA, 1, "lp_old98");
+ request_region(LP_PORT_STATUS, 1, "lp_old98");
+ request_region(LP_PORT_STROBE, 1, "lp_old98");
+#elif defined(CONFIG_RESOURCE98)
+ request_region(LP_PORT_DATA, -5, "lp_old98");
+#endif
+ /*
+ * rest are not needed by this driver,
+ * but for locking out other printer drivers...
+ */
+#ifdef PC98_HW_H98
+ if( pc98_hw_flags & PC98_HW_H98 )
+ request_region(LP_PORT_H98MODE, 1, "lp_old98");
+#endif
+ request_region(LP_PORT_EXTMODE, 1, "lp_old98");
+ lp_old98_init_device();
+
+ return 0;
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{
+#ifdef CONFIG_PC9800_OLDLP_CONSOLE
+ unregister_console(&lp_old98_console);
+#endif
+ unregister_chrdev(LP_MAJOR, "lp");
+
+ release_region(LP_PORT_DATA, 1);
+ release_region(LP_PORT_STATUS, 1);
+ release_region(LP_PORT_STROBE, 1);
+#ifdef PC98_HW_H98
+ if( pc98_hw_flags & PC98_HW_H98 )
+ release_region(LP_PORT_H98MODE, 1);
+#endif
+ release_region(LP_PORT_EXTMODE, 1);
+}
+
+MODULE_PARM(dc1_check, "1i");
+MODULE_AUTHOR("Kousuke Takai <tak@kmc.kyoto-u.ac.jp>");
+
+#endif
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2002-10-18 16:56 [PATCHSET 15/25] add support for PC-9800 architecture (parport) Osamu Tomita
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