diff options
Diffstat (limited to 'drivers/cdrom/sjcd.c')
| -rw-r--r-- | drivers/cdrom/sjcd.c | 1815 |
1 files changed, 0 insertions, 1815 deletions
diff --git a/drivers/cdrom/sjcd.c b/drivers/cdrom/sjcd.c deleted file mode 100644 index 5409fca..0000000 --- a/drivers/cdrom/sjcd.c +++ /dev/null @@ -1,1815 +0,0 @@ -/* -- 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/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 DEFINE_TIMER(sjcd_delay_timer, 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"); - - 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); |
