diff options
Diffstat (limited to 'drivers/cdrom/sjcd.c')
| -rw-r--r-- | drivers/cdrom/sjcd.c | 1817 |
1 files changed, 1817 insertions, 0 deletions
diff --git a/drivers/cdrom/sjcd.c b/drivers/cdrom/sjcd.c new file mode 100644 index 000000000000..4e7a342ec36f --- /dev/null +++ b/drivers/cdrom/sjcd.c @@ -0,0 +1,1817 @@ +/* -- 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); |