aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/cdrom/gscd.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/cdrom/gscd.c')
-rw-r--r--drivers/cdrom/gscd.c1029
1 files changed, 0 insertions, 1029 deletions
diff --git a/drivers/cdrom/gscd.c b/drivers/cdrom/gscd.c
deleted file mode 100644
index b3ab6e9b8df1..000000000000
--- a/drivers/cdrom/gscd.c
+++ /dev/null
@@ -1,1029 +0,0 @@
-#define GSCD_VERSION "0.4a Oliver Raupach <raupach@nwfs1.rz.fh-hannover.de>"
-
-/*
- linux/drivers/block/gscd.c - GoldStar R420 CDROM driver
-
- Copyright (C) 1995 Oliver Raupach <raupach@nwfs1.rz.fh-hannover.de>
- based upon pre-works by Eberhard Moenkeberg <emoenke@gwdg.de>
-
-
- For all kind of other information about the GoldStar CDROM
- and this Linux device driver I installed a WWW-URL:
- http://linux.rz.fh-hannover.de/~raupach
-
-
- If you are the editor of a Linux CD, you should
- enable gscd.c within your boot floppy kernel and
- send me one of your CDs for free.
-
-
- --------------------------------------------------------------------
- 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, 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.
-
- --------------------------------------------------------------------
-
- 9 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>
-
-*/
-
-/* These settings are for various debug-level. Leave they untouched ... */
-#define NO_GSCD_DEBUG
-#define NO_IOCTL_DEBUG
-#define NO_MODULE_DEBUG
-#define NO_FUTURE_WORK
-/*------------------------*/
-
-#include <linux/module.h>
-
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/timer.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/cdrom.h>
-#include <linux/ioport.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/init.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#define MAJOR_NR GOLDSTAR_CDROM_MAJOR
-#include <linux/blkdev.h>
-#include "gscd.h"
-
-static int gscdPresent = 0;
-
-static unsigned char gscd_buf[2048]; /* buffer for block size conversion */
-static int gscd_bn = -1;
-static short gscd_port = GSCD_BASE_ADDR;
-module_param_named(gscd, gscd_port, short, 0);
-
-/* Kommt spaeter vielleicht noch mal dran ...
- * static DECLARE_WAIT_QUEUE_HEAD(gscd_waitq);
- */
-
-static void gscd_read_cmd(struct request *req);
-static void gscd_hsg2msf(long hsg, struct msf *msf);
-static void gscd_bin2bcd(unsigned char *p);
-
-/* Schnittstellen zum Kern/FS */
-
-static void __do_gscd_request(unsigned long dummy);
-static int gscd_ioctl(struct inode *, struct file *, unsigned int,
- unsigned long);
-static int gscd_open(struct inode *, struct file *);
-static int gscd_release(struct inode *, struct file *);
-static int check_gscd_med_chg(struct gendisk *disk);
-
-/* GoldStar Funktionen */
-
-static void cmd_out(int, char *, char *, int);
-static void cmd_status(void);
-static void init_cd_drive(int);
-
-static int get_status(void);
-static void clear_Audio(void);
-static void cc_invalidate(void);
-
-/* some things for the next version */
-#ifdef FUTURE_WORK
-static void update_state(void);
-static long gscd_msf2hsg(struct msf *mp);
-static int gscd_bcd2bin(unsigned char bcd);
-#endif
-
-
-/* lo-level cmd-Funktionen */
-
-static void cmd_info_in(char *, int);
-static void cmd_end(void);
-static void cmd_read_b(char *, int, int);
-static void cmd_read_w(char *, int, int);
-static int cmd_unit_alive(void);
-static void cmd_write_cmd(char *);
-
-
-/* GoldStar Variablen */
-
-static int curr_drv_state;
-static int drv_states[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
-static int drv_mode;
-static int disk_state;
-static int speed;
-static int ndrives;
-
-static unsigned char drv_num_read;
-static unsigned char f_dsk_valid;
-static unsigned char current_drive;
-static unsigned char f_drv_ok;
-
-
-static char f_AudioPlay;
-static char f_AudioPause;
-static int AudioStart_m;
-static int AudioStart_f;
-static int AudioEnd_m;
-static int AudioEnd_f;
-
-static DEFINE_TIMER(gscd_timer, NULL, 0, 0);
-static DEFINE_SPINLOCK(gscd_lock);
-static struct request_queue *gscd_queue;
-
-static struct block_device_operations gscd_fops = {
- .owner = THIS_MODULE,
- .open = gscd_open,
- .release = gscd_release,
- .ioctl = gscd_ioctl,
- .media_changed = check_gscd_med_chg,
-};
-
-/*
- * Checking if the media has been changed
- * (not yet implemented)
- */
-static int check_gscd_med_chg(struct gendisk *disk)
-{
-#ifdef GSCD_DEBUG
- printk("gscd: check_med_change\n");
-#endif
- return 0;
-}
-
-
-#ifndef MODULE
-/* Using new interface for kernel-parameters */
-
-static int __init gscd_setup(char *str)
-{
- int ints[2];
- (void) get_options(str, ARRAY_SIZE(ints), ints);
-
- if (ints[0] > 0) {
- gscd_port = ints[1];
- }
- return 1;
-}
-
-__setup("gscd=", gscd_setup);
-
-#endif
-
-static int gscd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
- unsigned long arg)
-{
- unsigned char to_do[10];
- unsigned char dummy;
-
-
- switch (cmd) {
- case CDROMSTART: /* Spin up the drive */
- /* Don't think we can do this. Even if we could,
- * I think the drive times out and stops after a while
- * anyway. For now, ignore it.
- */
- return 0;
-
- case CDROMRESUME: /* keine Ahnung was das ist */
- return 0;
-
-
- case CDROMEJECT:
- cmd_status();
- to_do[0] = CMD_TRAY_CTL;
- cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0);
-
- return 0;
-
- default:
- return -EINVAL;
- }
-
-}
-
-
-/*
- * Take care of the different block sizes between cdrom and Linux.
- * When Linux gets variable block sizes this will probably go away.
- */
-
-static void gscd_transfer(struct request *req)
-{
- while (req->nr_sectors > 0 && gscd_bn == req->sector / 4) {
- long offs = (req->sector & 3) * 512;
- memcpy(req->buffer, gscd_buf + offs, 512);
- req->nr_sectors--;
- req->sector++;
- req->buffer += 512;
- }
-}
-
-
-/*
- * I/O request routine called from Linux kernel.
- */
-
-static void do_gscd_request(request_queue_t * q)
-{
- __do_gscd_request(0);
-}
-
-static void __do_gscd_request(unsigned long dummy)
-{
- struct request *req;
- unsigned int block;
- unsigned int nsect;
-
-repeat:
- req = elv_next_request(gscd_queue);
- if (!req)
- return;
-
- block = req->sector;
- nsect = req->nr_sectors;
-
- if (req->sector == -1)
- goto out;
-
- if (req->cmd != READ) {
- printk("GSCD: bad cmd %u\n", rq_data_dir(req));
- end_request(req, 0);
- goto repeat;
- }
-
- gscd_transfer(req);
-
- /* if we satisfied the request from the buffer, we're done. */
-
- if (req->nr_sectors == 0) {
- end_request(req, 1);
- goto repeat;
- }
-#ifdef GSCD_DEBUG
- printk("GSCD: block %d, nsect %d\n", block, nsect);
-#endif
- gscd_read_cmd(req);
-out:
- return;
-}
-
-
-
-/*
- * Check the result of the set-mode command. On success, send the
- * read-data command.
- */
-
-static void gscd_read_cmd(struct request *req)
-{
- long block;
- struct gscd_Play_msf gscdcmd;
- char cmd[] = { CMD_READ, 0x80, 0, 0, 0, 0, 1 }; /* cmd mode M-S-F secth sectl */
-
- cmd_status();
- if (disk_state & (ST_NO_DISK | ST_DOOR_OPEN)) {
- printk("GSCD: no disk or door open\n");
- end_request(req, 0);
- } else {
- if (disk_state & ST_INVALID) {
- printk("GSCD: disk invalid\n");
- end_request(req, 0);
- } else {
- gscd_bn = -1; /* purge our buffer */
- block = req->sector / 4;
- gscd_hsg2msf(block, &gscdcmd.start); /* cvt to msf format */
-
- cmd[2] = gscdcmd.start.min;
- cmd[3] = gscdcmd.start.sec;
- cmd[4] = gscdcmd.start.frame;
-
-#ifdef GSCD_DEBUG
- printk("GSCD: read msf %d:%d:%d\n", cmd[2], cmd[3],
- cmd[4]);
-#endif
- cmd_out(TYPE_DATA, (char *) &cmd,
- (char *) &gscd_buf[0], 1);
-
- gscd_bn = req->sector / 4;
- gscd_transfer(req);
- end_request(req, 1);
- }
- }
- SET_TIMER(__do_gscd_request, 1);
-}
-
-
-/*
- * Open the device special file. Check that a disk is in.
- */
-
-static int gscd_open(struct inode *ip, struct file *fp)
-{
- int st;
-
-#ifdef GSCD_DEBUG
- printk("GSCD: open\n");
-#endif
-
- if (gscdPresent == 0)
- return -ENXIO; /* no hardware */
-
- get_status();
- st = disk_state & (ST_NO_DISK | ST_DOOR_OPEN);
- if (st) {
- printk("GSCD: no disk or door open\n");
- return -ENXIO;
- }
-
-/* if (updateToc() < 0)
- return -EIO;
-*/
-
- return 0;
-}
-
-
-/*
- * On close, we flush all gscd blocks from the buffer cache.
- */
-
-static int gscd_release(struct inode *inode, struct file *file)
-{
-
-#ifdef GSCD_DEBUG
- printk("GSCD: release\n");
-#endif
-
- gscd_bn = -1;
-
- return 0;
-}
-
-
-static int get_status(void)
-{
- int status;
-
- cmd_status();
- status = disk_state & (ST_x08 | ST_x04 | ST_INVALID | ST_x01);
-
- if (status == (ST_x08 | ST_x04 | ST_INVALID | ST_x01)) {
- cc_invalidate();
- return 1;
- } else {
- return 0;
- }
-}
-
-
-static void cc_invalidate(void)
-{
- drv_num_read = 0xFF;
- f_dsk_valid = 0xFF;
- current_drive = 0xFF;
- f_drv_ok = 0xFF;
-
- clear_Audio();
-
-}
-
-static void clear_Audio(void)
-{
-
- f_AudioPlay = 0;
- f_AudioPause = 0;
- AudioStart_m = 0;
- AudioStart_f = 0;
- AudioEnd_m = 0;
- AudioEnd_f = 0;
-
-}
-
-/*
- * waiting ?
- */
-
-static int wait_drv_ready(void)
-{
- int found, read;
-
- do {
- found = inb(GSCDPORT(0));
- found &= 0x0f;
- read = inb(GSCDPORT(0));
- read &= 0x0f;
- } while (read != found);
-
-#ifdef GSCD_DEBUG
- printk("Wait for: %d\n", read);
-#endif
-
- return read;
-}
-
-static void cc_Ident(char *respons)
-{
- char to_do[] = { CMD_IDENT, 0, 0 };
-
- cmd_out(TYPE_INFO, (char *) &to_do, (char *) respons, (int) 0x1E);
-
-}
-
-static void cc_SetSpeed(void)
-{
- char to_do[] = { CMD_SETSPEED, 0, 0 };
- char dummy;
-
- if (speed > 0) {
- to_do[1] = speed & 0x0F;
- cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0);
- }
-}
-
-static void cc_Reset(void)
-{
- char to_do[] = { CMD_RESET, 0 };
- char dummy;
-
- cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0);
-}
-
-static void cmd_status(void)
-{
- char to_do[] = { CMD_STATUS, 0 };
- char dummy;
-
- cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0);
-
-#ifdef GSCD_DEBUG
- printk("GSCD: Status: %d\n", disk_state);
-#endif
-
-}
-
-static void cmd_out(int cmd_type, char *cmd, char *respo_buf, int respo_count)
-{
- int result;
-
-
- result = wait_drv_ready();
- if (result != drv_mode) {
- unsigned long test_loops = 0xFFFF;
- int i, dummy;
-
- outb(curr_drv_state, GSCDPORT(0));
-
- /* LOCLOOP_170 */
- do {
- result = wait_drv_ready();
- test_loops--;
- } while ((result != drv_mode) && (test_loops > 0));
-
- if (result != drv_mode) {
- disk_state = ST_x08 | ST_x04 | ST_INVALID;
- return;
- }
-
- /* ...and waiting */
- for (i = 1, dummy = 1; i < 0xFFFF; i++) {
- dummy *= i;
- }
- }
-
- /* LOC_172 */
- /* check the unit */
- /* and wake it up */
- if (cmd_unit_alive() != 0x08) {
- /* LOC_174 */
- /* game over for this unit */
- disk_state = ST_x08 | ST_x04 | ST_INVALID;
- return;
- }
-
- /* LOC_176 */
-#ifdef GSCD_DEBUG
- printk("LOC_176 ");
-#endif
- if (drv_mode == 0x09) {
- /* magic... */
- printk("GSCD: magic ...\n");
- outb(result, GSCDPORT(2));
- }
-
- /* write the command to the drive */
- cmd_write_cmd(cmd);
-
- /* LOC_178 */
- for (;;) {
- result = wait_drv_ready();
- if (result != drv_mode) {
- /* LOC_179 */
- if (result == 0x04) { /* Mode 4 */
- /* LOC_205 */
-#ifdef GSCD_DEBUG
- printk("LOC_205 ");
-#endif
- disk_state = inb(GSCDPORT(2));
-
- do {
- result = wait_drv_ready();
- } while (result != drv_mode);
- return;
-
- } else {
- if (result == 0x06) { /* Mode 6 */
- /* LOC_181 */
-#ifdef GSCD_DEBUG
- printk("LOC_181 ");
-#endif
-
- if (cmd_type == TYPE_DATA) {
- /* read data */
- /* LOC_184 */
- if (drv_mode == 9) {
- /* read the data to the buffer (word) */
-
- /* (*(cmd+1))?(CD_FRAMESIZE/2):(CD_FRAMESIZE_RAW/2) */
- cmd_read_w
- (respo_buf,
- respo_count,
- CD_FRAMESIZE /
- 2);
- return;
- } else {
- /* read the data to the buffer (byte) */
-
- /* (*(cmd+1))?(CD_FRAMESIZE):(CD_FRAMESIZE_RAW) */
- cmd_read_b
- (respo_buf,
- respo_count,
- CD_FRAMESIZE);
- return;
- }
- } else {
- /* read the info to the buffer */
- cmd_info_in(respo_buf,
- respo_count);
- return;
- }
-
- return;
- }
- }
-
- } else {
- disk_state = ST_x08 | ST_x04 | ST_INVALID;
- return;
- }
- } /* for (;;) */
-
-
-#ifdef GSCD_DEBUG
- printk("\n");
-#endif
-}
-
-
-static void cmd_write_cmd(char *pstr)
-{
- int i, j;
-
- /* LOC_177 */
-#ifdef GSCD_DEBUG
- printk("LOC_177 ");
-#endif
-
- /* calculate the number of parameter */
- j = *pstr & 0x0F;
-
- /* shift it out */
- for (i = 0; i < j; i++) {
- outb(*pstr, GSCDPORT(2));
- pstr++;
- }
-}
-
-
-static int cmd_unit_alive(void)
-{
- int result;
- unsigned long max_test_loops;
-
-
- /* LOC_172 */
-#ifdef GSCD_DEBUG
- printk("LOC_172 ");
-#endif
-
- outb(curr_drv_state, GSCDPORT(0));
- max_test_loops = 0xFFFF;
-
- do {
- result = wait_drv_ready();
- max_test_loops--;
- } while ((result != 0x08) && (max_test_loops > 0));
-
- return result;
-}
-
-
-static void cmd_info_in(char *pb, int count)
-{
- int result;
- char read;
-
-
- /* read info */
- /* LOC_182 */
-#ifdef GSCD_DEBUG
- printk("LOC_182 ");
-#endif
-
- do {
- read = inb(GSCDPORT(2));
- if (count > 0) {
- *pb = read;
- pb++;
- count--;
- }
-
- /* LOC_183 */
- do {
- result = wait_drv_ready();
- } while (result == 0x0E);
- } while (result == 6);
-
- cmd_end();
- return;
-}
-
-
-static void cmd_read_b(char *pb, int count, int size)
-{
- int result;
- int i;
-
-
- /* LOC_188 */
- /* LOC_189 */
-#ifdef GSCD_DEBUG
- printk("LOC_189 ");
-#endif
-
- do {
- do {
- result = wait_drv_ready();
- } while (result != 6 || result == 0x0E);
-
- if (result != 6) {
- cmd_end();
- return;
- }
-#ifdef GSCD_DEBUG
- printk("LOC_191 ");
-#endif
-
- for (i = 0; i < size; i++) {
- *pb = inb(GSCDPORT(2));
- pb++;
- }
- count--;
- } while (count > 0);
-
- cmd_end();
- return;
-}
-
-
-static void cmd_end(void)
-{
- int result;
-
-
- /* LOC_204 */
-#ifdef GSCD_DEBUG
- printk("LOC_204 ");
-#endif
-
- do {
- result = wait_drv_ready();
- if (result == drv_mode) {
- return;
- }
- } while (result != 4);
-
- /* LOC_205 */
-#ifdef GSCD_DEBUG
- printk("LOC_205 ");
-#endif
-
- disk_state = inb(GSCDPORT(2));
-
- do {
- result = wait_drv_ready();
- } while (result != drv_mode);
- return;
-
-}
-
-
-static void cmd_read_w(char *pb, int count, int size)
-{
- int result;
- int i;
-
-
-#ifdef GSCD_DEBUG
- printk("LOC_185 ");
-#endif
-
- do {
- /* LOC_185 */
- do {
- result = wait_drv_ready();
- } while (result != 6 || result == 0x0E);
-
- if (result != 6) {
- cmd_end();
- return;
- }
-
- for (i = 0; i < size; i++) {
- /* na, hier muss ich noch mal drueber nachdenken */
- *pb = inw(GSCDPORT(2));
- pb++;
- }
- count--;
- } while (count > 0);
-
- cmd_end();
- return;
-}
-
-static int __init find_drives(void)
-{
- int *pdrv;
- int drvnum;
- int subdrv;
- int i;
-
- speed = 0;
- pdrv = (int *) &drv_states;
- curr_drv_state = 0xFE;
- subdrv = 0;
- drvnum = 0;
-
- for (i = 0; i < 8; i++) {
- subdrv++;
- cmd_status();
- disk_state &= ST_x08 | ST_x04 | ST_INVALID | ST_x01;
- if (disk_state != (ST_x08 | ST_x04 | ST_INVALID)) {
- /* LOC_240 */
- *pdrv = curr_drv_state;
- init_cd_drive(drvnum);
- pdrv++;
- drvnum++;
- } else {
- if (subdrv < 2) {
- continue;
- } else {
- subdrv = 0;
- }
- }
-
-/* curr_drv_state<<1; <-- das geht irgendwie nicht */
-/* muss heissen: curr_drv_state <<= 1; (ist ja Wert-Zuweisung) */
- curr_drv_state *= 2;
- curr_drv_state |= 1;
-#ifdef GSCD_DEBUG
- printk("DriveState: %d\n", curr_drv_state);
-#endif
- }
-
- ndrives = drvnum;
- return drvnum;
-}
-
-static void __init init_cd_drive(int num)
-{
- char resp[50];
- int i;
-
- printk("GSCD: init unit %d\n", num);
- cc_Ident((char *) &resp);
-
- printk("GSCD: identification: ");
- for (i = 0; i < 0x1E; i++) {
- printk("%c", resp[i]);
- }
- printk("\n");
-
- cc_SetSpeed();
-
-}
-
-#ifdef FUTURE_WORK
-/* return_done */
-static void update_state(void)
-{
- unsigned int AX;
-
-
- if ((disk_state & (ST_x08 | ST_x04 | ST_INVALID | ST_x01)) == 0) {
- if (disk_state == (ST_x08 | ST_x04 | ST_INVALID)) {
- AX = ST_INVALID;
- }
-
- if ((disk_state & (ST_x08 | ST_x04 | ST_INVALID | ST_x01))
- == 0) {
- invalidate();
- f_drv_ok = 0;
- }
-
- AX |= 0x8000;
- }
-
- if (disk_state & ST_PLAYING) {
- AX |= 0x200;
- }
-
- AX |= 0x100;
- /* pkt_esbx = AX; */
-
- disk_state = 0;
-
-}
-#endif
-
-static struct gendisk *gscd_disk;
-
-static void __exit gscd_exit(void)
-{
- CLEAR_TIMER;
-
- del_gendisk(gscd_disk);
- put_disk(gscd_disk);
- if ((unregister_blkdev(MAJOR_NR, "gscd") == -EINVAL)) {
- printk("What's that: can't unregister GoldStar-module\n");
- return;
- }
- blk_cleanup_queue(gscd_queue);
- release_region(gscd_port, GSCD_IO_EXTENT);
- printk(KERN_INFO "GoldStar-module released.\n");
-}
-
-/* This is the common initialisation for the GoldStar drive. */
-/* It is called at boot time AND for module init. */
-static int __init gscd_init(void)
-{
- int i;
- int result;
- int ret=0;
-
- printk(KERN_INFO "GSCD: version %s\n", GSCD_VERSION);
- printk(KERN_INFO
- "GSCD: Trying to detect a Goldstar R420 CD-ROM drive at 0x%X.\n",
- gscd_port);
-
- if (!request_region(gscd_port, GSCD_IO_EXTENT, "gscd")) {
- printk(KERN_WARNING "GSCD: Init failed, I/O port (%X) already"
- " in use.\n", gscd_port);
- return -EIO;
- }
-
-
- /* check for card */
- result = wait_drv_ready();
- if (result == 0x09) {
- printk(KERN_WARNING "GSCD: DMA kann ich noch nicht!\n");
- ret = -EIO;
- goto err_out1;
- }
-
- if (result == 0x0b) {
- drv_mode = result;
- i = find_drives();
- if (i == 0) {
- printk(KERN_WARNING "GSCD: GoldStar CD-ROM Drive is"
- " not found.\n");
- ret = -EIO;
- goto err_out1;
- }
- }
-
- if ((result != 0x0b) && (result != 0x09)) {
- printk(KERN_WARNING "GSCD: GoldStar Interface Adapter does not "
- "exist or H/W error\n");
- ret = -EIO;
- goto err_out1;
- }
-
- /* reset all drives */
- i = 0;
- while (drv_states[i] != 0) {
- curr_drv_state = drv_states[i];
- printk(KERN_INFO "GSCD: Reset unit %d ... ", i);
- cc_Reset();
- printk("done\n");
- i++;
- }
-
- gscd_disk = alloc_disk(1);
- if (!gscd_disk)
- goto err_out1;
- gscd_disk->major = MAJOR_NR;
- gscd_disk->first_minor = 0;
- gscd_disk->fops = &gscd_fops;
- sprintf(gscd_disk->disk_name, "gscd");
-
- if (register_blkdev(MAJOR_NR, "gscd")) {
- ret = -EIO;
- goto err_out2;
- }
-
- gscd_queue = blk_init_queue(do_gscd_request, &gscd_lock);
- if (!gscd_queue) {
- ret = -ENOMEM;
- goto err_out3;
- }
-
- disk_state = 0;
- gscdPresent = 1;
-
- gscd_disk->queue = gscd_queue;
- add_disk(gscd_disk);
-
- printk(KERN_INFO "GSCD: GoldStar CD-ROM Drive found.\n");
- return 0;
-
-err_out3:
- unregister_blkdev(MAJOR_NR, "gscd");
-err_out2:
- put_disk(gscd_disk);
-err_out1:
- release_region(gscd_port, GSCD_IO_EXTENT);
- return ret;
-}
-
-static void gscd_hsg2msf(long hsg, struct msf *msf)
-{
- hsg += CD_MSF_OFFSET;
- msf->min = hsg / (CD_FRAMES * CD_SECS);
- hsg %= CD_FRAMES * CD_SECS;
- msf->sec = hsg / CD_FRAMES;
- msf->frame = hsg % CD_FRAMES;
-
- gscd_bin2bcd(&msf->min); /* convert to BCD */
- gscd_bin2bcd(&msf->sec);
- gscd_bin2bcd(&msf->frame);
-}
-
-
-static void gscd_bin2bcd(unsigned char *p)
-{
- int u, t;
-
- u = *p % 10;
- t = *p / 10;
- *p = u | (t << 4);
-}
-
-
-#ifdef FUTURE_WORK
-static long gscd_msf2hsg(struct msf *mp)
-{
- return gscd_bcd2bin(mp->frame)
- + gscd_bcd2bin(mp->sec) * CD_FRAMES
- + gscd_bcd2bin(mp->min) * CD_FRAMES * CD_SECS - CD_MSF_OFFSET;
-}
-
-static int gscd_bcd2bin(unsigned char bcd)
-{
- return (bcd >> 4) * 10 + (bcd & 0xF);
-}
-#endif
-
-MODULE_AUTHOR("Oliver Raupach <raupach@nwfs1.rz.fh-hannover.de>");
-MODULE_LICENSE("GPL");
-module_init(gscd_init);
-module_exit(gscd_exit);
-MODULE_ALIAS_BLOCKDEV_MAJOR(GOLDSTAR_CDROM_MAJOR);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.