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linux-next/drivers/cdrom/sjcd.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

1818 lines
42 KiB
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/* -- sjcd.c
*
* Sanyo CD-ROM device driver implementation, Version 1.6
* Copyright (C) 1995 Vadim V. Model
*
* model@cecmow.enet.dec.com
* vadim@rbrf.ru
* vadim@ipsun.ras.ru
*
*
* This driver is based on pre-works by Eberhard Moenkeberg (emoenke@gwdg.de);
* it was developed under use of mcd.c from Martin Harriss, with help of
* Eric van der Maarel (H.T.M.v.d.Maarel@marin.nl).
*
* It is planned to include these routines into sbpcd.c later - to make
* a "mixed use" on one cable possible for all kinds of drives which use
* the SoundBlaster/Panasonic style CDROM interface. But today, the
* ability to install directly from CDROM is more important than flexibility.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* History:
* 1.1 First public release with kernel version 1.3.7.
* Written by Vadim Model.
* 1.2 Added detection and configuration of cdrom interface
* on ISP16 soundcard.
* Allow for command line options: sjcd=<io_base>,<irq>,<dma>
* 1.3 Some minor changes to README.sjcd.
* 1.4 MSS Sound support!! Listen to a CD through the speakers.
* 1.5 Module support and bugfixes.
* Tray locking.
* 1.6 Removed ISP16 code from this driver.
* Allow only to set io base address on command line: sjcd=<io_base>
* Changes to Documentation/cdrom/sjcd
* Added cleanup after any error in the initialisation.
* 1.7 Added code to set the sector size tables to prevent the bug present in
* the previous version of this driver. Coded added by Anthony Barbachan
* from bugfix tip originally suggested by Alan Cox.
*
* November 1999 -- Make kernel-parameter implementation work with 2.3.x
* Removed init_module & cleanup_module in favor of
* module_init & module_exit.
* Torben Mathiasen <tmm@image.dk>
*/
#define SJCD_VERSION_MAJOR 1
#define SJCD_VERSION_MINOR 7
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/timer.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/cdrom.h>
#include <linux/ioport.h>
#include <linux/string.h>
#include <linux/major.h>
#include <linux/init.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/blkdev.h>
#include "sjcd.h"
static int sjcd_present = 0;
static struct request_queue *sjcd_queue;
#define MAJOR_NR SANYO_CDROM_MAJOR
#define QUEUE (sjcd_queue)
#define CURRENT elv_next_request(sjcd_queue)
#define SJCD_BUF_SIZ 32 /* cdr-h94a has internal 64K buffer */
/*
* buffer for block size conversion
*/
static char sjcd_buf[2048 * SJCD_BUF_SIZ];
static volatile int sjcd_buf_bn[SJCD_BUF_SIZ], sjcd_next_bn;
static volatile int sjcd_buf_in, sjcd_buf_out = -1;
/*
* Status.
*/
static unsigned short sjcd_status_valid = 0;
static unsigned short sjcd_door_closed;
static unsigned short sjcd_door_was_open;
static unsigned short sjcd_media_is_available;
static unsigned short sjcd_media_is_changed;
static unsigned short sjcd_toc_uptodate = 0;
static unsigned short sjcd_command_failed;
static volatile unsigned char sjcd_completion_status = 0;
static volatile unsigned char sjcd_completion_error = 0;
static unsigned short sjcd_command_is_in_progress = 0;
static unsigned short sjcd_error_reported = 0;
static DEFINE_SPINLOCK(sjcd_lock);
static int sjcd_open_count;
static int sjcd_audio_status;
static struct sjcd_play_msf sjcd_playing;
static int sjcd_base = SJCD_BASE_ADDR;
module_param(sjcd_base, int, 0);
static DECLARE_WAIT_QUEUE_HEAD(sjcd_waitq);
/*
* Data transfer.
*/
static volatile unsigned short sjcd_transfer_is_active = 0;
enum sjcd_transfer_state {
SJCD_S_IDLE = 0,
SJCD_S_START = 1,
SJCD_S_MODE = 2,
SJCD_S_READ = 3,
SJCD_S_DATA = 4,
SJCD_S_STOP = 5,
SJCD_S_STOPPING = 6
};
static enum sjcd_transfer_state sjcd_transfer_state = SJCD_S_IDLE;
static long sjcd_transfer_timeout = 0;
static int sjcd_read_count = 0;
static unsigned char sjcd_mode = 0;
#define SJCD_READ_TIMEOUT 5000
#if defined( SJCD_GATHER_STAT )
/*
* Statistic.
*/
static struct sjcd_stat statistic;
#endif
/*
* Timer.
*/
static struct timer_list sjcd_delay_timer = TIMER_INITIALIZER(NULL, 0, 0);
#define SJCD_SET_TIMER( func, tmout ) \
( sjcd_delay_timer.expires = jiffies+tmout, \
sjcd_delay_timer.function = ( void * )func, \
add_timer( &sjcd_delay_timer ) )
#define CLEAR_TIMER del_timer( &sjcd_delay_timer )
/*
* Set up device, i.e., use command line data to set
* base address.
*/
#ifndef MODULE
static int __init sjcd_setup(char *str)
{
int ints[2];
(void) get_options(str, ARRAY_SIZE(ints), ints);
if (ints[0] > 0)
sjcd_base = ints[1];
return 1;
}
__setup("sjcd=", sjcd_setup);
#endif
/*
* Special converters.
*/
static unsigned char bin2bcd(int bin)
{
int u, v;
u = bin % 10;
v = bin / 10;
return (u | (v << 4));
}
static int bcd2bin(unsigned char bcd)
{
return ((bcd >> 4) * 10 + (bcd & 0x0F));
}
static long msf2hsg(struct msf *mp)
{
return (bcd2bin(mp->frame) + bcd2bin(mp->sec) * 75
+ bcd2bin(mp->min) * 4500 - 150);
}
static void hsg2msf(long hsg, struct msf *msf)
{
hsg += 150;
msf->min = hsg / 4500;
hsg %= 4500;
msf->sec = hsg / 75;
msf->frame = hsg % 75;
msf->min = bin2bcd(msf->min); /* convert to BCD */
msf->sec = bin2bcd(msf->sec);
msf->frame = bin2bcd(msf->frame);
}
/*
* Send a command to cdrom. Invalidate status.
*/
static void sjcd_send_cmd(unsigned char cmd)
{
#if defined( SJCD_TRACE )
printk("SJCD: send_cmd( 0x%x )\n", cmd);
#endif
outb(cmd, SJCDPORT(0));
sjcd_command_is_in_progress = 1;
sjcd_status_valid = 0;
sjcd_command_failed = 0;
}
/*
* Send a command with one arg to cdrom. Invalidate status.
*/
static void sjcd_send_1_cmd(unsigned char cmd, unsigned char a)
{
#if defined( SJCD_TRACE )
printk("SJCD: send_1_cmd( 0x%x, 0x%x )\n", cmd, a);
#endif
outb(cmd, SJCDPORT(0));
outb(a, SJCDPORT(0));
sjcd_command_is_in_progress = 1;
sjcd_status_valid = 0;
sjcd_command_failed = 0;
}
/*
* Send a command with four args to cdrom. Invalidate status.
*/
static void sjcd_send_4_cmd(unsigned char cmd, unsigned char a,
unsigned char b, unsigned char c,
unsigned char d)
{
#if defined( SJCD_TRACE )
printk("SJCD: send_4_cmd( 0x%x )\n", cmd);
#endif
outb(cmd, SJCDPORT(0));
outb(a, SJCDPORT(0));
outb(b, SJCDPORT(0));
outb(c, SJCDPORT(0));
outb(d, SJCDPORT(0));
sjcd_command_is_in_progress = 1;
sjcd_status_valid = 0;
sjcd_command_failed = 0;
}
/*
* Send a play or read command to cdrom. Invalidate Status.
*/
static void sjcd_send_6_cmd(unsigned char cmd, struct sjcd_play_msf *pms)
{
#if defined( SJCD_TRACE )
printk("SJCD: send_long_cmd( 0x%x )\n", cmd);
#endif
outb(cmd, SJCDPORT(0));
outb(pms->start.min, SJCDPORT(0));
outb(pms->start.sec, SJCDPORT(0));
outb(pms->start.frame, SJCDPORT(0));
outb(pms->end.min, SJCDPORT(0));
outb(pms->end.sec, SJCDPORT(0));
outb(pms->end.frame, SJCDPORT(0));
sjcd_command_is_in_progress = 1;
sjcd_status_valid = 0;
sjcd_command_failed = 0;
}
/*
* Get a value from the data port. Should not block, so we use a little
* wait for a while. Returns 0 if OK.
*/
static int sjcd_load_response(void *buf, int len)
{
unsigned char *resp = (unsigned char *) buf;
for (; len; --len) {
int i;
for (i = 200;
i-- && !SJCD_STATUS_AVAILABLE(inb(SJCDPORT(1))););
if (i > 0)
*resp++ = (unsigned char) inb(SJCDPORT(0));
else
break;
}
return (len);
}
/*
* Load and parse command completion status (drive info byte and maybe error).
* Sorry, no error classification yet.
*/
static void sjcd_load_status(void)
{
sjcd_media_is_changed = 0;
sjcd_completion_error = 0;
sjcd_completion_status = inb(SJCDPORT(0));
if (sjcd_completion_status & SST_DOOR_OPENED) {
sjcd_door_closed = sjcd_media_is_available = 0;
} else {
sjcd_door_closed = 1;
if (sjcd_completion_status & SST_MEDIA_CHANGED)
sjcd_media_is_available = sjcd_media_is_changed =
1;
else if (sjcd_completion_status & 0x0F) {
/*
* OK, we seem to catch an error ...
*/
while (!SJCD_STATUS_AVAILABLE(inb(SJCDPORT(1))));
sjcd_completion_error = inb(SJCDPORT(0));
if ((sjcd_completion_status & 0x08) &&
(sjcd_completion_error & 0x40))
sjcd_media_is_available = 0;
else
sjcd_command_failed = 1;
} else
sjcd_media_is_available = 1;
}
/*
* Ok, status loaded successfully.
*/
sjcd_status_valid = 1, sjcd_error_reported = 0;
sjcd_command_is_in_progress = 0;
/*
* If the disk is changed, the TOC is not valid.
*/
if (sjcd_media_is_changed)
sjcd_toc_uptodate = 0;
#if defined( SJCD_TRACE )
printk("SJCD: status %02x.%02x loaded.\n",
(int) sjcd_completion_status, (int) sjcd_completion_error);
#endif
}
/*
* Read status from cdrom. Check to see if the status is available.
*/
static int sjcd_check_status(void)
{
/*
* Try to load the response from cdrom into buffer.
*/
if (SJCD_STATUS_AVAILABLE(inb(SJCDPORT(1)))) {
sjcd_load_status();
return (1);
} else {
/*
* No status is available.
*/
return (0);
}
}
/*
* This is just timeout counter, and nothing more. Surprised ? :-)
*/
static volatile long sjcd_status_timeout;
/*
* We need about 10 seconds to wait. The longest command takes about 5 seconds
* to probe the disk (usually after tray closed or drive reset). Other values
* should be thought of for other commands.
*/
#define SJCD_WAIT_FOR_STATUS_TIMEOUT 1000
static void sjcd_status_timer(void)
{
if (sjcd_check_status()) {
/*
* The command completed and status is loaded, stop waiting.
*/
wake_up(&sjcd_waitq);
} else if (--sjcd_status_timeout <= 0) {
/*
* We are timed out.
*/
wake_up(&sjcd_waitq);
} else {
/*
* We have still some time to wait. Try again.
*/
SJCD_SET_TIMER(sjcd_status_timer, 1);
}
}
/*
* Wait for status for 10 sec approx. Returns non-positive when timed out.
* Should not be used while reading data CDs.
*/
static int sjcd_wait_for_status(void)
{
sjcd_status_timeout = SJCD_WAIT_FOR_STATUS_TIMEOUT;
SJCD_SET_TIMER(sjcd_status_timer, 1);
sleep_on(&sjcd_waitq);
#if defined( SJCD_DIAGNOSTIC ) || defined ( SJCD_TRACE )
if (sjcd_status_timeout <= 0)
printk("SJCD: Error Wait For Status.\n");
#endif
return (sjcd_status_timeout);
}
static int sjcd_receive_status(void)
{
int i;
#if defined( SJCD_TRACE )
printk("SJCD: receive_status\n");
#endif
/*
* Wait a bit for status available.
*/
for (i = 200; i-- && (sjcd_check_status() == 0););
if (i < 0) {
#if defined( SJCD_TRACE )
printk("SJCD: long wait for status\n");
#endif
if (sjcd_wait_for_status() <= 0)
printk("SJCD: Timeout when read status.\n");
else
i = 0;
}
return (i);
}
/*
* Load the status. Issue get status command and wait for status available.
*/
static void sjcd_get_status(void)
{
#if defined( SJCD_TRACE )
printk("SJCD: get_status\n");
#endif
sjcd_send_cmd(SCMD_GET_STATUS);
sjcd_receive_status();
}
/*
* Check the drive if the disk is changed. Should be revised.
*/
static int sjcd_disk_change(struct gendisk *disk)
{
#if 0
printk("SJCD: sjcd_disk_change(%s)\n", disk->disk_name);
#endif
if (!sjcd_command_is_in_progress)
sjcd_get_status();
return (sjcd_status_valid ? sjcd_media_is_changed : 0);
}
/*
* Read the table of contents (TOC) and TOC header if necessary.
* We assume that the drive contains no more than 99 toc entries.
*/
static struct sjcd_hw_disk_info sjcd_table_of_contents[SJCD_MAX_TRACKS];
static unsigned char sjcd_first_track_no, sjcd_last_track_no;
#define sjcd_disk_length sjcd_table_of_contents[0].un.track_msf
static int sjcd_update_toc(void)
{
struct sjcd_hw_disk_info info;
int i;
#if defined( SJCD_TRACE )
printk("SJCD: update toc:\n");
#endif
/*
* check to see if we need to do anything
*/
if (sjcd_toc_uptodate)
return (0);
/*
* Get the TOC start information.
*/
sjcd_send_1_cmd(SCMD_GET_DISK_INFO, SCMD_GET_1_TRACK);
sjcd_receive_status();
if (!sjcd_status_valid) {
printk("SJCD: cannot load status.\n");
return (-1);
}
if (!sjcd_media_is_available) {
printk("SJCD: no disk in drive\n");
return (-1);
}
if (!sjcd_command_failed) {
if (sjcd_load_response(&info, sizeof(info)) != 0) {
printk
("SJCD: cannot load response about TOC start.\n");
return (-1);
}
sjcd_first_track_no = bcd2bin(info.un.track_no);
} else {
printk("SJCD: get first failed\n");
return (-1);
}
#if defined( SJCD_TRACE )
printk("SJCD: TOC start 0x%02x ", sjcd_first_track_no);
#endif
/*
* Get the TOC finish information.
*/
sjcd_send_1_cmd(SCMD_GET_DISK_INFO, SCMD_GET_L_TRACK);
sjcd_receive_status();
if (!sjcd_status_valid) {
printk("SJCD: cannot load status.\n");
return (-1);
}
if (!sjcd_media_is_available) {
printk("SJCD: no disk in drive\n");
return (-1);
}
if (!sjcd_command_failed) {
if (sjcd_load_response(&info, sizeof(info)) != 0) {
printk
("SJCD: cannot load response about TOC finish.\n");
return (-1);
}
sjcd_last_track_no = bcd2bin(info.un.track_no);
} else {
printk("SJCD: get last failed\n");
return (-1);
}
#if defined( SJCD_TRACE )
printk("SJCD: TOC finish 0x%02x ", sjcd_last_track_no);
#endif
for (i = sjcd_first_track_no; i <= sjcd_last_track_no; i++) {
/*
* Get the first track information.
*/
sjcd_send_1_cmd(SCMD_GET_DISK_INFO, bin2bcd(i));
sjcd_receive_status();
if (!sjcd_status_valid) {
printk("SJCD: cannot load status.\n");
return (-1);
}
if (!sjcd_media_is_available) {
printk("SJCD: no disk in drive\n");
return (-1);
}
if (!sjcd_command_failed) {
if (sjcd_load_response(&sjcd_table_of_contents[i],
sizeof(struct
sjcd_hw_disk_info))
!= 0) {
printk
("SJCD: cannot load info for %d track\n",
i);
return (-1);
}
} else {
printk("SJCD: get info %d failed\n", i);
return (-1);
}
}
/*
* Get the disk length info.
*/
sjcd_send_1_cmd(SCMD_GET_DISK_INFO, SCMD_GET_D_SIZE);
sjcd_receive_status();
if (!sjcd_status_valid) {
printk("SJCD: cannot load status.\n");
return (-1);
}
if (!sjcd_media_is_available) {
printk("SJCD: no disk in drive\n");
return (-1);
}
if (!sjcd_command_failed) {
if (sjcd_load_response(&info, sizeof(info)) != 0) {
printk
("SJCD: cannot load response about disk size.\n");
return (-1);
}
sjcd_disk_length.min = info.un.track_msf.min;
sjcd_disk_length.sec = info.un.track_msf.sec;
sjcd_disk_length.frame = info.un.track_msf.frame;
} else {
printk("SJCD: get size failed\n");
return (1);
}
#if defined( SJCD_TRACE )
printk("SJCD: (%02x:%02x.%02x)\n", sjcd_disk_length.min,
sjcd_disk_length.sec, sjcd_disk_length.frame);
#endif
return (0);
}
/*
* Load subchannel information.
*/
static int sjcd_get_q_info(struct sjcd_hw_qinfo *qp)
{
int s;
#if defined( SJCD_TRACE )
printk("SJCD: load sub q\n");
#endif
sjcd_send_cmd(SCMD_GET_QINFO);
s = sjcd_receive_status();
if (s < 0 || sjcd_command_failed || !sjcd_status_valid) {
sjcd_send_cmd(0xF2);
s = sjcd_receive_status();
if (s < 0 || sjcd_command_failed || !sjcd_status_valid)
return (-1);
sjcd_send_cmd(SCMD_GET_QINFO);
s = sjcd_receive_status();
if (s < 0 || sjcd_command_failed || !sjcd_status_valid)
return (-1);
}
if (sjcd_media_is_available)
if (sjcd_load_response(qp, sizeof(*qp)) == 0)
return (0);
return (-1);
}
/*
* Start playing from the specified position.
*/
static int sjcd_play(struct sjcd_play_msf *mp)
{
struct sjcd_play_msf msf;
/*
* Turn the device to play mode.
*/
sjcd_send_1_cmd(SCMD_SET_MODE, SCMD_MODE_PLAY);
if (sjcd_receive_status() < 0)
return (-1);
/*
* Seek to the starting point.
*/
msf.start = mp->start;
msf.end.min = msf.end.sec = msf.end.frame = 0x00;
sjcd_send_6_cmd(SCMD_SEEK, &msf);
if (sjcd_receive_status() < 0)
return (-1);
/*
* Start playing.
*/
sjcd_send_6_cmd(SCMD_PLAY, mp);
return (sjcd_receive_status());
}
/*
* Tray control functions.
*/
static int sjcd_tray_close(void)
{
#if defined( SJCD_TRACE )
printk("SJCD: tray_close\n");
#endif
sjcd_send_cmd(SCMD_CLOSE_TRAY);
return (sjcd_receive_status());
}
static int sjcd_tray_lock(void)
{
#if defined( SJCD_TRACE )
printk("SJCD: tray_lock\n");
#endif
sjcd_send_cmd(SCMD_LOCK_TRAY);
return (sjcd_receive_status());
}
static int sjcd_tray_unlock(void)
{
#if defined( SJCD_TRACE )
printk("SJCD: tray_unlock\n");
#endif
sjcd_send_cmd(SCMD_UNLOCK_TRAY);
return (sjcd_receive_status());
}
static int sjcd_tray_open(void)
{
#if defined( SJCD_TRACE )
printk("SJCD: tray_open\n");
#endif
sjcd_send_cmd(SCMD_EJECT_TRAY);
return (sjcd_receive_status());
}
/*
* Do some user commands.
*/
static int sjcd_ioctl(struct inode *ip, struct file *fp,
unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
#if defined( SJCD_TRACE )
printk("SJCD:ioctl\n");
#endif
sjcd_get_status();
if (!sjcd_status_valid)
return (-EIO);
if (sjcd_update_toc() < 0)
return (-EIO);
switch (cmd) {
case CDROMSTART:{
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: start\n");
#endif
return (0);
}
case CDROMSTOP:{
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: stop\n");
#endif
sjcd_send_cmd(SCMD_PAUSE);
(void) sjcd_receive_status();
sjcd_audio_status = CDROM_AUDIO_NO_STATUS;
return (0);
}
case CDROMPAUSE:{
struct sjcd_hw_qinfo q_info;
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: pause\n");
#endif
if (sjcd_audio_status == CDROM_AUDIO_PLAY) {
sjcd_send_cmd(SCMD_PAUSE);
(void) sjcd_receive_status();
if (sjcd_get_q_info(&q_info) < 0) {
sjcd_audio_status =
CDROM_AUDIO_NO_STATUS;
} else {
sjcd_audio_status =
CDROM_AUDIO_PAUSED;
sjcd_playing.start = q_info.abs;
}
return (0);
} else
return (-EINVAL);
}
case CDROMRESUME:{
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: resume\n");
#endif
if (sjcd_audio_status == CDROM_AUDIO_PAUSED) {
/*
* continue play starting at saved location
*/
if (sjcd_play(&sjcd_playing) < 0) {
sjcd_audio_status =
CDROM_AUDIO_ERROR;
return (-EIO);
} else {
sjcd_audio_status =
CDROM_AUDIO_PLAY;
return (0);
}
} else
return (-EINVAL);
}
case CDROMPLAYTRKIND:{
struct cdrom_ti ti;
int s = -EFAULT;
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: playtrkind\n");
#endif
if (!copy_from_user(&ti, argp, sizeof(ti))) {
s = 0;
if (ti.cdti_trk0 < sjcd_first_track_no)
return (-EINVAL);
if (ti.cdti_trk1 > sjcd_last_track_no)
ti.cdti_trk1 = sjcd_last_track_no;
if (ti.cdti_trk0 > ti.cdti_trk1)
return (-EINVAL);
sjcd_playing.start =
sjcd_table_of_contents[ti.cdti_trk0].
un.track_msf;
sjcd_playing.end =
(ti.cdti_trk1 <
sjcd_last_track_no) ?
sjcd_table_of_contents[ti.cdti_trk1 +
1].un.
track_msf : sjcd_table_of_contents[0].
un.track_msf;
if (sjcd_play(&sjcd_playing) < 0) {
sjcd_audio_status =
CDROM_AUDIO_ERROR;
return (-EIO);
} else
sjcd_audio_status =
CDROM_AUDIO_PLAY;
}
return (s);
}
case CDROMPLAYMSF:{
struct cdrom_msf sjcd_msf;
int s;
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: playmsf\n");
#endif
if ((s =
access_ok(VERIFY_READ, argp, sizeof(sjcd_msf))
? 0 : -EFAULT) == 0) {
if (sjcd_audio_status == CDROM_AUDIO_PLAY) {
sjcd_send_cmd(SCMD_PAUSE);
(void) sjcd_receive_status();
sjcd_audio_status =
CDROM_AUDIO_NO_STATUS;
}
if (copy_from_user(&sjcd_msf, argp,
sizeof(sjcd_msf)))
return (-EFAULT);
sjcd_playing.start.min =
bin2bcd(sjcd_msf.cdmsf_min0);
sjcd_playing.start.sec =
bin2bcd(sjcd_msf.cdmsf_sec0);
sjcd_playing.start.frame =
bin2bcd(sjcd_msf.cdmsf_frame0);
sjcd_playing.end.min =
bin2bcd(sjcd_msf.cdmsf_min1);
sjcd_playing.end.sec =
bin2bcd(sjcd_msf.cdmsf_sec1);
sjcd_playing.end.frame =
bin2bcd(sjcd_msf.cdmsf_frame1);
if (sjcd_play(&sjcd_playing) < 0) {
sjcd_audio_status =
CDROM_AUDIO_ERROR;
return (-EIO);
} else
sjcd_audio_status =
CDROM_AUDIO_PLAY;
}
return (s);
}
case CDROMREADTOCHDR:{
struct cdrom_tochdr toc_header;
#if defined (SJCD_TRACE )
printk("SJCD: ioctl: readtocheader\n");
#endif
toc_header.cdth_trk0 = sjcd_first_track_no;
toc_header.cdth_trk1 = sjcd_last_track_no;
if (copy_to_user(argp, &toc_header,
sizeof(toc_header)))
return -EFAULT;
return 0;
}
case CDROMREADTOCENTRY:{
struct cdrom_tocentry toc_entry;
int s;
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: readtocentry\n");
#endif
if ((s =
access_ok(VERIFY_WRITE, argp, sizeof(toc_entry))
? 0 : -EFAULT) == 0) {
struct sjcd_hw_disk_info *tp;
if (copy_from_user(&toc_entry, argp,
sizeof(toc_entry)))
return (-EFAULT);
if (toc_entry.cdte_track == CDROM_LEADOUT)
tp = &sjcd_table_of_contents[0];
else if (toc_entry.cdte_track <
sjcd_first_track_no)
return (-EINVAL);
else if (toc_entry.cdte_track >
sjcd_last_track_no)
return (-EINVAL);
else
tp = &sjcd_table_of_contents
[toc_entry.cdte_track];
toc_entry.cdte_adr =
tp->track_control & 0x0F;
toc_entry.cdte_ctrl =
tp->track_control >> 4;
switch (toc_entry.cdte_format) {
case CDROM_LBA:
toc_entry.cdte_addr.lba =
msf2hsg(&(tp->un.track_msf));
break;
case CDROM_MSF:
toc_entry.cdte_addr.msf.minute =
bcd2bin(tp->un.track_msf.min);
toc_entry.cdte_addr.msf.second =
bcd2bin(tp->un.track_msf.sec);
toc_entry.cdte_addr.msf.frame =
bcd2bin(tp->un.track_msf.
frame);
break;
default:
return (-EINVAL);
}
if (copy_to_user(argp, &toc_entry,
sizeof(toc_entry)))
s = -EFAULT;
}
return (s);
}
case CDROMSUBCHNL:{
struct cdrom_subchnl subchnl;
int s;
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: subchnl\n");
#endif
if ((s =
access_ok(VERIFY_WRITE, argp, sizeof(subchnl))
? 0 : -EFAULT) == 0) {
struct sjcd_hw_qinfo q_info;
if (copy_from_user(&subchnl, argp,
sizeof(subchnl)))
return (-EFAULT);
if (sjcd_get_q_info(&q_info) < 0)
return (-EIO);
subchnl.cdsc_audiostatus =
sjcd_audio_status;
subchnl.cdsc_adr =
q_info.track_control & 0x0F;
subchnl.cdsc_ctrl =
q_info.track_control >> 4;
subchnl.cdsc_trk =
bcd2bin(q_info.track_no);
subchnl.cdsc_ind = bcd2bin(q_info.x);
switch (subchnl.cdsc_format) {
case CDROM_LBA:
subchnl.cdsc_absaddr.lba =
msf2hsg(&(q_info.abs));
subchnl.cdsc_reladdr.lba =
msf2hsg(&(q_info.rel));
break;
case CDROM_MSF:
subchnl.cdsc_absaddr.msf.minute =
bcd2bin(q_info.abs.min);
subchnl.cdsc_absaddr.msf.second =
bcd2bin(q_info.abs.sec);
subchnl.cdsc_absaddr.msf.frame =
bcd2bin(q_info.abs.frame);
subchnl.cdsc_reladdr.msf.minute =
bcd2bin(q_info.rel.min);
subchnl.cdsc_reladdr.msf.second =
bcd2bin(q_info.rel.sec);
subchnl.cdsc_reladdr.msf.frame =
bcd2bin(q_info.rel.frame);
break;
default:
return (-EINVAL);
}
if (copy_to_user(argp, &subchnl,
sizeof(subchnl)))
s = -EFAULT;
}
return (s);
}
case CDROMVOLCTRL:{
struct cdrom_volctrl vol_ctrl;
int s;
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: volctrl\n");
#endif
if ((s =
access_ok(VERIFY_READ, argp, sizeof(vol_ctrl))
? 0 : -EFAULT) == 0) {
unsigned char dummy[4];
if (copy_from_user(&vol_ctrl, argp,
sizeof(vol_ctrl)))
return (-EFAULT);
sjcd_send_4_cmd(SCMD_SET_VOLUME,
vol_ctrl.channel0, 0xFF,
vol_ctrl.channel1, 0xFF);
if (sjcd_receive_status() < 0)
return (-EIO);
(void) sjcd_load_response(dummy, 4);
}
return (s);
}
case CDROMEJECT:{
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: eject\n");
#endif
if (!sjcd_command_is_in_progress) {
sjcd_tray_unlock();
sjcd_send_cmd(SCMD_EJECT_TRAY);
(void) sjcd_receive_status();
}
return (0);
}
#if defined( SJCD_GATHER_STAT )
case 0xABCD:{
#if defined( SJCD_TRACE )
printk("SJCD: ioctl: statistic\n");
#endif
if (copy_to_user(argp, &statistic, sizeof(statistic)))
return -EFAULT;
return 0;
}
#endif
default:
return (-EINVAL);
}
}
/*
* Invalidate internal buffers of the driver.
*/
static void sjcd_invalidate_buffers(void)
{
int i;
for (i = 0; i < SJCD_BUF_SIZ; sjcd_buf_bn[i++] = -1);
sjcd_buf_out = -1;
}
/*
* Take care of the different block sizes between cdrom and Linux.
* When Linux gets variable block sizes this will probably go away.
*/
static int current_valid(void)
{
return CURRENT &&
CURRENT->cmd == READ &&
CURRENT->sector != -1;
}
static void sjcd_transfer(void)
{
#if defined( SJCD_TRACE )
printk("SJCD: transfer:\n");
#endif
if (current_valid()) {
while (CURRENT->nr_sectors) {
int i, bn = CURRENT->sector / 4;
for (i = 0;
i < SJCD_BUF_SIZ && sjcd_buf_bn[i] != bn;
i++);
if (i < SJCD_BUF_SIZ) {
int offs =
(i * 4 + (CURRENT->sector & 3)) * 512;
int nr_sectors = 4 - (CURRENT->sector & 3);
if (sjcd_buf_out != i) {
sjcd_buf_out = i;
if (sjcd_buf_bn[i] != bn) {
sjcd_buf_out = -1;
continue;
}
}
if (nr_sectors > CURRENT->nr_sectors)
nr_sectors = CURRENT->nr_sectors;
#if defined( SJCD_TRACE )
printk("SJCD: copy out\n");
#endif
memcpy(CURRENT->buffer, sjcd_buf + offs,
nr_sectors * 512);
CURRENT->nr_sectors -= nr_sectors;
CURRENT->sector += nr_sectors;
CURRENT->buffer += nr_sectors * 512;
} else {
sjcd_buf_out = -1;
break;
}
}
}
#if defined( SJCD_TRACE )
printk("SJCD: transfer: done\n");
#endif
}
static void sjcd_poll(void)
{
#if defined( SJCD_GATHER_STAT )
/*
* Update total number of ticks.
*/
statistic.ticks++;
statistic.tticks[sjcd_transfer_state]++;
#endif
ReSwitch:switch (sjcd_transfer_state) {
case SJCD_S_IDLE:{
#if defined( SJCD_GATHER_STAT )
statistic.idle_ticks++;
#endif
#if defined( SJCD_TRACE )
printk("SJCD_S_IDLE\n");
#endif
return;
}
case SJCD_S_START:{
#if defined( SJCD_GATHER_STAT )
statistic.start_ticks++;
#endif
sjcd_send_cmd(SCMD_GET_STATUS);
sjcd_transfer_state =
sjcd_mode ==
SCMD_MODE_COOKED ? SJCD_S_READ : SJCD_S_MODE;
sjcd_transfer_timeout = 500;
#if defined( SJCD_TRACE )
printk("SJCD_S_START: goto SJCD_S_%s mode\n",
sjcd_transfer_state ==
SJCD_S_READ ? "READ" : "MODE");
#endif
break;
}
case SJCD_S_MODE:{
if (sjcd_check_status()) {
/*
* Previous command is completed.
*/
if (!sjcd_status_valid
|| sjcd_command_failed) {
#if defined( SJCD_TRACE )
printk
("SJCD_S_MODE: pre-cmd failed: goto to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state = SJCD_S_STOP;
goto ReSwitch;
}
sjcd_mode = 0; /* unknown mode; should not be valid when failed */
sjcd_send_1_cmd(SCMD_SET_MODE,
SCMD_MODE_COOKED);
sjcd_transfer_state = SJCD_S_READ;
sjcd_transfer_timeout = 1000;
#if defined( SJCD_TRACE )
printk
("SJCD_S_MODE: goto SJCD_S_READ mode\n");
#endif
}
#if defined( SJCD_GATHER_STAT )
else
statistic.mode_ticks++;
#endif
break;
}
case SJCD_S_READ:{
if (sjcd_status_valid ? 1 : sjcd_check_status()) {
/*
* Previous command is completed.
*/
if (!sjcd_status_valid
|| sjcd_command_failed) {
#if defined( SJCD_TRACE )
printk
("SJCD_S_READ: pre-cmd failed: goto to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state = SJCD_S_STOP;
goto ReSwitch;
}
if (!sjcd_media_is_available) {
#if defined( SJCD_TRACE )
printk
("SJCD_S_READ: no disk: goto to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state = SJCD_S_STOP;
goto ReSwitch;
}
if (sjcd_mode != SCMD_MODE_COOKED) {
/*
* We seem to come from set mode. So discard one byte of result.
*/
if (sjcd_load_response
(&sjcd_mode, 1) != 0) {
#if defined( SJCD_TRACE )
printk
("SJCD_S_READ: load failed: goto to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state =
SJCD_S_STOP;
goto ReSwitch;
}
if (sjcd_mode != SCMD_MODE_COOKED) {
#if defined( SJCD_TRACE )
printk
("SJCD_S_READ: mode failed: goto to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state =
SJCD_S_STOP;
goto ReSwitch;
}
}
if (current_valid()) {
struct sjcd_play_msf msf;
sjcd_next_bn = CURRENT->sector / 4;
hsg2msf(sjcd_next_bn, &msf.start);
msf.end.min = 0;
msf.end.sec = 0;
msf.end.frame = sjcd_read_count =
SJCD_BUF_SIZ;
#if defined( SJCD_TRACE )
printk
("SJCD: ---reading msf-address %x:%x:%x %x:%x:%x\n",
msf.start.min, msf.start.sec,
msf.start.frame, msf.end.min,
msf.end.sec, msf.end.frame);
printk
("sjcd_next_bn:%x buf_in:%x buf_out:%x buf_bn:%x\n",
sjcd_next_bn, sjcd_buf_in,
sjcd_buf_out,
sjcd_buf_bn[sjcd_buf_in]);
#endif
sjcd_send_6_cmd(SCMD_DATA_READ,
&msf);
sjcd_transfer_state = SJCD_S_DATA;
sjcd_transfer_timeout = 500;
#if defined( SJCD_TRACE )
printk
("SJCD_S_READ: go to SJCD_S_DATA mode\n");
#endif
} else {
#if defined( SJCD_TRACE )
printk
("SJCD_S_READ: nothing to read: go to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state = SJCD_S_STOP;
goto ReSwitch;
}
}
#if defined( SJCD_GATHER_STAT )
else
statistic.read_ticks++;
#endif
break;
}
case SJCD_S_DATA:{
unsigned char stat;
sjcd_s_data:stat =
inb(SJCDPORT
(1));
#if defined( SJCD_TRACE )
printk("SJCD_S_DATA: status = 0x%02x\n", stat);
#endif
if (SJCD_STATUS_AVAILABLE(stat)) {
/*
* No data is waiting for us in the drive buffer. Status of operation
* completion is available. Read and parse it.
*/
sjcd_load_status();
if (!sjcd_status_valid
|| sjcd_command_failed) {
#if defined( SJCD_TRACE )
printk
("SJCD: read block %d failed, maybe audio disk? Giving up\n",
sjcd_next_bn);
#endif
if (current_valid())
end_request(CURRENT, 0);
#if defined( SJCD_TRACE )
printk
("SJCD_S_DATA: pre-cmd failed: go to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state = SJCD_S_STOP;
goto ReSwitch;
}
if (!sjcd_media_is_available) {
printk
("SJCD_S_DATA: no disk: go to SJCD_S_STOP mode\n");
sjcd_transfer_state = SJCD_S_STOP;
goto ReSwitch;
}
sjcd_transfer_state = SJCD_S_READ;
goto ReSwitch;
} else if (SJCD_DATA_AVAILABLE(stat)) {
/*
* One frame is read into device buffer. We must copy it to our memory.
* Otherwise cdrom hangs up. Check to see if we have something to copy
* to.
*/
if (!current_valid()
&& sjcd_buf_in == sjcd_buf_out) {
#if defined( SJCD_TRACE )
printk
("SJCD_S_DATA: nothing to read: go to SJCD_S_STOP mode\n");
printk
(" ... all the date would be discarded\n");
#endif
sjcd_transfer_state = SJCD_S_STOP;
goto ReSwitch;
}
/*
* Everything seems to be OK. Just read the frame and recalculate
* indices.
*/
sjcd_buf_bn[sjcd_buf_in] = -1; /* ??? */
insb(SJCDPORT(2),
sjcd_buf + 2048 * sjcd_buf_in, 2048);
#if defined( SJCD_TRACE )
printk
("SJCD_S_DATA: next_bn=%d, buf_in=%d, buf_out=%d, buf_bn=%d\n",
sjcd_next_bn, sjcd_buf_in,
sjcd_buf_out,
sjcd_buf_bn[sjcd_buf_in]);
#endif
sjcd_buf_bn[sjcd_buf_in] = sjcd_next_bn++;
if (sjcd_buf_out == -1)
sjcd_buf_out = sjcd_buf_in;
if (++sjcd_buf_in == SJCD_BUF_SIZ)
sjcd_buf_in = 0;
/*
* Only one frame is ready at time. So we should turn over to wait for
* another frame. If we need that, of course.
*/
if (--sjcd_read_count == 0) {
/*
* OK, request seems to be precessed. Continue transferring...
*/
if (!sjcd_transfer_is_active) {
while (current_valid()) {
/*
* Continue transferring.
*/
sjcd_transfer();
if (CURRENT->
nr_sectors ==
0)
end_request
(CURRENT, 1);
else
break;
}
}
if (current_valid() &&
(CURRENT->sector / 4 <
sjcd_next_bn
|| CURRENT->sector / 4 >
sjcd_next_bn +
SJCD_BUF_SIZ)) {
#if defined( SJCD_TRACE )
printk
("SJCD_S_DATA: can't read: go to SJCD_S_STOP mode\n");
#endif
sjcd_transfer_state =
SJCD_S_STOP;
goto ReSwitch;
}
}
/*
* Now we should turn around rather than wait for while.
*/
goto sjcd_s_data;
}
#if defined( SJCD_GATHER_STAT )
else
statistic.data_ticks++;
#endif
break;
}
case SJCD_S_STOP:{
sjcd_read_count = 0;
sjcd_send_cmd(SCMD_STOP);
sjcd_transfer_state = SJCD_S_STOPPING;
sjcd_transfer_timeout = 500;
#if defined( SJCD_GATHER_STAT )
statistic.stop_ticks++;
#endif
break;
}
case SJCD_S_STOPPING:{
unsigned char stat;
stat = inb(SJCDPORT(1));
#if defined( SJCD_TRACE )
printk("SJCD_S_STOP: status = 0x%02x\n", stat);
#endif
if (SJCD_DATA_AVAILABLE(stat)) {
int i;
#if defined( SJCD_TRACE )
printk("SJCD_S_STOP: discard data\n");
#endif
/*
* Discard all the data from the pipe. Foolish method.
*/
for (i = 2048; i--;
(void) inb(SJCDPORT(2)));
sjcd_transfer_timeout = 500;
} else if (SJCD_STATUS_AVAILABLE(stat)) {
sjcd_load_status();
if (sjcd_status_valid
&& sjcd_media_is_changed) {
sjcd_toc_uptodate = 0;
sjcd_invalidate_buffers();
}
if (current_valid()) {
if (sjcd_status_valid)
sjcd_transfer_state =
SJCD_S_READ;
else
sjcd_transfer_state =
SJCD_S_START;
} else
sjcd_transfer_state = SJCD_S_IDLE;
goto ReSwitch;
}
#if defined( SJCD_GATHER_STAT )
else
statistic.stopping_ticks++;
#endif
break;
}
default:
printk("SJCD: poll: invalid state %d\n",
sjcd_transfer_state);
return;
}
if (--sjcd_transfer_timeout == 0) {
printk("SJCD: timeout in state %d\n", sjcd_transfer_state);
while (current_valid())
end_request(CURRENT, 0);
sjcd_send_cmd(SCMD_STOP);
sjcd_transfer_state = SJCD_S_IDLE;
goto ReSwitch;
}
/*
* Get back in some time. 1 should be replaced with count variable to
* avoid unnecessary testings.
*/
SJCD_SET_TIMER(sjcd_poll, 1);
}
static void do_sjcd_request(request_queue_t * q)
{
#if defined( SJCD_TRACE )
printk("SJCD: do_sjcd_request(%ld+%ld)\n",
CURRENT->sector, CURRENT->nr_sectors);
#endif
sjcd_transfer_is_active = 1;
while (current_valid()) {
sjcd_transfer();
if (CURRENT->nr_sectors == 0)
end_request(CURRENT, 1);
else {
sjcd_buf_out = -1; /* Want to read a block not in buffer */
if (sjcd_transfer_state == SJCD_S_IDLE) {
if (!sjcd_toc_uptodate) {
if (sjcd_update_toc() < 0) {
printk
("SJCD: transfer: discard\n");
while (current_valid())
end_request(CURRENT, 0);
break;
}
}
sjcd_transfer_state = SJCD_S_START;
SJCD_SET_TIMER(sjcd_poll, HZ / 100);
}
break;
}
}
sjcd_transfer_is_active = 0;
#if defined( SJCD_TRACE )
printk
("sjcd_next_bn:%x sjcd_buf_in:%x sjcd_buf_out:%x sjcd_buf_bn:%x\n",
sjcd_next_bn, sjcd_buf_in, sjcd_buf_out,
sjcd_buf_bn[sjcd_buf_in]);
printk("do_sjcd_request ends\n");
#endif
}
/*
* Open the device special file. Check disk is in.
*/
static int sjcd_open(struct inode *ip, struct file *fp)
{
/*
* Check the presence of device.
*/
if (!sjcd_present)
return (-ENXIO);
/*
* Only read operations are allowed. Really? (:-)
*/
if (fp->f_mode & 2)
return (-EROFS);
if (sjcd_open_count == 0) {
int s, sjcd_open_tries;
/* We don't know that, do we? */
/*
sjcd_audio_status = CDROM_AUDIO_NO_STATUS;
*/
sjcd_mode = 0;
sjcd_door_was_open = 0;
sjcd_transfer_state = SJCD_S_IDLE;
sjcd_invalidate_buffers();
sjcd_status_valid = 0;
/*
* Strict status checking.
*/
for (sjcd_open_tries = 4; --sjcd_open_tries;) {
if (!sjcd_status_valid)
sjcd_get_status();
if (!sjcd_status_valid) {
#if defined( SJCD_DIAGNOSTIC )
printk
("SJCD: open: timed out when check status.\n");
#endif
goto err_out;
} else if (!sjcd_media_is_available) {
#if defined( SJCD_DIAGNOSTIC )
printk("SJCD: open: no disk in drive\n");
#endif
if (!sjcd_door_closed) {
sjcd_door_was_open = 1;
#if defined( SJCD_TRACE )
printk
("SJCD: open: close the tray\n");
#endif
s = sjcd_tray_close();
if (s < 0 || !sjcd_status_valid
|| sjcd_command_failed) {
#if defined( SJCD_DIAGNOSTIC )
printk
("SJCD: open: tray close attempt failed\n");
#endif
goto err_out;
}
continue;
} else
goto err_out;
}
break;
}
s = sjcd_tray_lock();
if (s < 0 || !sjcd_status_valid || sjcd_command_failed) {
#if defined( SJCD_DIAGNOSTIC )
printk("SJCD: open: tray lock attempt failed\n");
#endif
goto err_out;
}
#if defined( SJCD_TRACE )
printk("SJCD: open: done\n");
#endif
}
++sjcd_open_count;
return (0);
err_out:
return (-EIO);
}
/*
* On close, we flush all sjcd blocks from the buffer cache.
*/
static int sjcd_release(struct inode *inode, struct file *file)
{
int s;
#if defined( SJCD_TRACE )
printk("SJCD: release\n");
#endif
if (--sjcd_open_count == 0) {
sjcd_invalidate_buffers();
s = sjcd_tray_unlock();
if (s < 0 || !sjcd_status_valid || sjcd_command_failed) {
#if defined( SJCD_DIAGNOSTIC )
printk
("SJCD: release: tray unlock attempt failed.\n");
#endif
}
if (sjcd_door_was_open) {
s = sjcd_tray_open();
if (s < 0 || !sjcd_status_valid
|| sjcd_command_failed) {
#if defined( SJCD_DIAGNOSTIC )
printk
("SJCD: release: tray unload attempt failed.\n");
#endif
}
}
}
return 0;
}
/*
* A list of file operations allowed for this cdrom.
*/
static struct block_device_operations sjcd_fops = {
.owner = THIS_MODULE,
.open = sjcd_open,
.release = sjcd_release,
.ioctl = sjcd_ioctl,
.media_changed = sjcd_disk_change,
};
/*
* Following stuff is intended for initialization of the cdrom. It
* first looks for presence of device. If the device is present, it
* will be reset. Then read the version of the drive and load status.
* The version is two BCD-coded bytes.
*/
static struct {
unsigned char major, minor;
} sjcd_version;
static struct gendisk *sjcd_disk;
/*
* Test for presence of drive and initialize it. Called at boot time.
* Probe cdrom, find out version and status.
*/
static int __init sjcd_init(void)
{
int i;
printk(KERN_INFO
"SJCD: Sanyo CDR-H94A cdrom driver version %d.%d.\n",
SJCD_VERSION_MAJOR, SJCD_VERSION_MINOR);
#if defined( SJCD_TRACE )
printk("SJCD: sjcd=0x%x: ", sjcd_base);
#endif
if (register_blkdev(MAJOR_NR, "sjcd"))
return -EIO;
sjcd_queue = blk_init_queue(do_sjcd_request, &sjcd_lock);
if (!sjcd_queue)
goto out0;
blk_queue_hardsect_size(sjcd_queue, 2048);
sjcd_disk = alloc_disk(1);
if (!sjcd_disk) {
printk(KERN_ERR "SJCD: can't allocate disk");
goto out1;
}
sjcd_disk->major = MAJOR_NR,
sjcd_disk->first_minor = 0,
sjcd_disk->fops = &sjcd_fops,
sprintf(sjcd_disk->disk_name, "sjcd");
sprintf(sjcd_disk->devfs_name, "sjcd");
if (!request_region(sjcd_base, 4,"sjcd")) {
printk
("SJCD: Init failed, I/O port (%X) is already in use\n",
sjcd_base);
goto out2;
}
/*
* Check for card. Since we are booting now, we can't use standard
* wait algorithm.
*/
printk(KERN_INFO "SJCD: Resetting: ");
sjcd_send_cmd(SCMD_RESET);
for (i = 1000; i > 0 && !sjcd_status_valid; --i) {
unsigned long timer;
/*
* Wait 10ms approx.
*/
for (timer = jiffies; time_before_eq(jiffies, timer););
if ((i % 100) == 0)
printk(".");
(void) sjcd_check_status();
}
if (i == 0 || sjcd_command_failed) {
printk(" reset failed, no drive found.\n");
goto out3;
} else
printk("\n");
/*
* Get and print out cdrom version.
*/
printk(KERN_INFO "SJCD: Getting version: ");
sjcd_send_cmd(SCMD_GET_VERSION);
for (i = 1000; i > 0 && !sjcd_status_valid; --i) {
unsigned long timer;
/*
* Wait 10ms approx.
*/
for (timer = jiffies; time_before_eq(jiffies, timer););
if ((i % 100) == 0)
printk(".");
(void) sjcd_check_status();
}
if (i == 0 || sjcd_command_failed) {
printk(" get version failed, no drive found.\n");
goto out3;
}
if (sjcd_load_response(&sjcd_version, sizeof(sjcd_version)) == 0) {
printk(" %1x.%02x\n", (int) sjcd_version.major,
(int) sjcd_version.minor);
} else {
printk(" read version failed, no drive found.\n");
goto out3;
}
/*
* Check and print out the tray state. (if it is needed?).
*/
if (!sjcd_status_valid) {
printk(KERN_INFO "SJCD: Getting status: ");
sjcd_send_cmd(SCMD_GET_STATUS);
for (i = 1000; i > 0 && !sjcd_status_valid; --i) {
unsigned long timer;
/*
* Wait 10ms approx.
*/
for (timer = jiffies;
time_before_eq(jiffies, timer););
if ((i % 100) == 0)
printk(".");
(void) sjcd_check_status();
}
if (i == 0 || sjcd_command_failed) {
printk(" get status failed, no drive found.\n");
goto out3;
} else
printk("\n");
}
printk(KERN_INFO "SJCD: Status: port=0x%x.\n", sjcd_base);
sjcd_disk->queue = sjcd_queue;
add_disk(sjcd_disk);
sjcd_present++;
return (0);
out3:
release_region(sjcd_base, 4);
out2:
put_disk(sjcd_disk);
out1:
blk_cleanup_queue(sjcd_queue);
out0:
if ((unregister_blkdev(MAJOR_NR, "sjcd") == -EINVAL))
printk("SJCD: cannot unregister device.\n");
return (-EIO);
}
static void __exit sjcd_exit(void)
{
del_gendisk(sjcd_disk);
put_disk(sjcd_disk);
release_region(sjcd_base, 4);
blk_cleanup_queue(sjcd_queue);
if ((unregister_blkdev(MAJOR_NR, "sjcd") == -EINVAL))
printk("SJCD: cannot unregister device.\n");
printk(KERN_INFO "SJCD: module: removed.\n");
}
module_init(sjcd_init);
module_exit(sjcd_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS_BLOCKDEV_MAJOR(SANYO_CDROM_MAJOR);
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