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Diffstat (limited to 'drivers/cdrom/aztcd.c')
-rw-r--r--drivers/cdrom/aztcd.c2494
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diff --git a/drivers/cdrom/aztcd.c b/drivers/cdrom/aztcd.c
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--- /dev/null
+++ b/drivers/cdrom/aztcd.c
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+#define AZT_VERSION "2.60"
+
+/* $Id: aztcd.c,v 2.60 1997/11/29 09:51:19 root Exp root $
+ linux/drivers/block/aztcd.c - Aztech CD268 CDROM driver
+
+ Copyright (C) 1994-98 Werner Zimmermann(Werner.Zimmermann@fht-esslingen.de)
+
+ based on Mitsumi CDROM driver by Martin Hariss and preworks by
+ Eberhard Moenkeberg; contains contributions by Joe Nardone and Robby
+ Schirmer.
+
+ 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.
+
+ HISTORY
+ V0.0 Adaption to Aztech CD268-01A Version 1.3
+ Version is PRE_ALPHA, unresolved points:
+ 1. I use busy wait instead of timer wait in STEN_LOW,DTEN_LOW
+ thus driver causes CPU overhead and is very slow
+ 2. could not find a way to stop the drive, when it is
+ in data read mode, therefore I had to set
+ msf.end.min/sec/frame to 0:0:1 (in azt_poll); so only one
+ frame can be read in sequence, this is also the reason for
+ 3. getting 'timeout in state 4' messages, but nevertheless
+ it works
+ W.Zimmermann, Oct. 31, 1994
+ V0.1 Version is ALPHA, problems #2 and #3 resolved.
+ W.Zimmermann, Nov. 3, 1994
+ V0.2 Modification to some comments, debugging aids for partial test
+ with Borland C under DOS eliminated. Timer interrupt wait
+ STEN_LOW_WAIT additionally to busy wait for STEN_LOW implemented;
+ use it only for the 'slow' commands (ACMD_GET_Q_CHANNEL, ACMD_
+ SEEK_TO_LEAD_IN), all other commands are so 'fast', that busy
+ waiting seems better to me than interrupt rescheduling.
+ Besides that, when used in the wrong place, STEN_LOW_WAIT causes
+ kernel panic.
+ In function aztPlay command ACMD_PLAY_AUDIO added, should make
+ audio functions work. The Aztech drive needs different commands
+ to read data tracks and play audio tracks.
+ W.Zimmermann, Nov. 8, 1994
+ V0.3 Recognition of missing drive during boot up improved (speeded up).
+ W.Zimmermann, Nov. 13, 1994
+ V0.35 Rewrote the control mechanism in azt_poll (formerly mcd_poll)
+ including removal of all 'goto' commands. :-);
+ J. Nardone, Nov. 14, 1994
+ V0.4 Renamed variables and constants to 'azt' instead of 'mcd'; had
+ to make some "compatibility" defines in azt.h; please note,
+ that the source file was renamed to azt.c, the include file to
+ azt.h
+ Speeded up drive recognition during init (will be a little bit
+ slower than before if no drive is installed!); suggested by
+ Robby Schirmer.
+ read_count declared volatile and set to AZT_BUF_SIZ to make
+ drive faster (now 300kB/sec, was 60kB/sec before, measured
+ by 'time dd if=/dev/cdrom of=/dev/null bs=2048 count=4096';
+ different AZT_BUF_SIZes were test, above 16 no further im-
+ provement seems to be possible; suggested by E.Moenkeberg.
+ W.Zimmermann, Nov. 18, 1994
+ V0.42 Included getAztStatus command in GetQChannelInfo() to allow
+ reading Q-channel info on audio disks, if drive is stopped,
+ and some other bug fixes in the audio stuff, suggested by
+ Robby Schirmer.
+ Added more ioctls (reading data in mode 1 and mode 2).
+ Completely removed the old azt_poll() routine.
+ Detection of ORCHID CDS-3110 in aztcd_init implemented.
+ Additional debugging aids (see the readme file).
+ W.Zimmermann, Dec. 9, 1994
+ V0.50 Autodetection of drives implemented.
+ W.Zimmermann, Dec. 12, 1994
+ V0.52 Prepared for including in the standard kernel, renamed most
+ variables to contain 'azt', included autoconf.h
+ W.Zimmermann, Dec. 16, 1994
+ V0.6 Version for being included in the standard Linux kernel.
+ Renamed source and header file to aztcd.c and aztcd.h
+ W.Zimmermann, Dec. 24, 1994
+ V0.7 Changed VERIFY_READ to VERIFY_WRITE in aztcd_ioctl, case
+ CDROMREADMODE1 and CDROMREADMODE2; bug fix in the ioctl,
+ which causes kernel crashes when playing audio, changed
+ include-files (config.h instead of autoconf.h, removed
+ delay.h)
+ W.Zimmermann, Jan. 8, 1995
+ V0.72 Some more modifications for adaption to the standard kernel.
+ W.Zimmermann, Jan. 16, 1995
+ V0.80 aztcd is now part of the standard kernel since version 1.1.83.
+ Modified the SET_TIMER and CLEAR_TIMER macros to comply with
+ the new timer scheme.
+ W.Zimmermann, Jan. 21, 1995
+ V0.90 Included CDROMVOLCTRL, but with my Aztech drive I can only turn
+ the channels on and off. If it works better with your drive,
+ please mail me. Also implemented ACMD_CLOSE for CDROMSTART.
+ W.Zimmermann, Jan. 24, 1995
+ V1.00 Implemented close and lock tray commands. Patches supplied by
+ Frank Racis
+ Added support for loadable MODULEs, so aztcd can now also be
+ loaded by insmod and removed by rmmod during run time
+ Werner Zimmermann, Mar. 24, 95
+ V1.10 Implemented soundcard configuration for Orchid CDS-3110 drives
+ connected to Soundwave32 cards. Release for LST 2.1.
+ (still experimental)
+ Werner Zimmermann, May 8, 95
+ V1.20 Implemented limited support for DOSEMU0.60's cdrom.c. Now it works, but
+ sometimes DOSEMU may hang for 30 seconds or so. A fully functional ver-
+ sion needs an update of Dosemu0.60's cdrom.c, which will come with the
+ next revision of Dosemu.
+ Also Soundwave32 support now works.
+ Werner Zimmermann, May 22, 95
+ V1.30 Auto-eject feature. Inspired by Franc Racis (racis@psu.edu)
+ Werner Zimmermann, July 4, 95
+ V1.40 Started multisession support. Implementation copied from mcdx.c
+ by Heiko Schlittermann. Not tested yet.
+ Werner Zimmermann, July 15, 95
+ V1.50 Implementation of ioctl CDROMRESET, continued multisession, began
+ XA, but still untested. Heavy modifications to drive status de-
+ tection.
+ Werner Zimmermann, July 25, 95
+ V1.60 XA support now should work. Speeded up drive recognition in cases,
+ where no drive is installed.
+ Werner Zimmermann, August 8, 1995
+ V1.70 Multisession support now is completed, but there is still not
+ enough testing done. If you can test it, please contact me. For
+ details please read Documentation/cdrom/aztcd
+ Werner Zimmermann, August 19, 1995
+ V1.80 Modification to suit the new kernel boot procedure introduced
+ with kernel 1.3.33. Will definitely not work with older kernels.
+ Programming done by Linus himself.
+ Werner Zimmermann, October 11, 1995
+ V1.90 Support for Conrad TXC drives, thank's to Jochen Kunz and Olaf Kaluza.
+ Werner Zimmermann, October 21, 1995
+ V2.00 Changed #include "blk.h" to <linux/blk.h> as the directory
+ structure was changed. README.aztcd is now /usr/src/docu-
+ mentation/cdrom/aztcd
+ Werner Zimmermann, November 10, 95
+ V2.10 Started to modify azt_poll to prevent reading beyond end of
+ tracks.
+ Werner Zimmermann, December 3, 95
+ V2.20 Changed some comments
+ Werner Zimmermann, April 1, 96
+ V2.30 Implemented support for CyCDROM CR520, CR940, Code for CR520
+ delivered by H.Berger with preworks by E.Moenkeberg.
+ Werner Zimmermann, April 29, 96
+ V2.40 Reorganized the placement of functions in the source code file
+ to reflect the layered approach; did not actually change code
+ Werner Zimmermann, May 1, 96
+ V2.50 Heiko Eissfeldt suggested to remove some VERIFY_READs in
+ aztcd_ioctl; check_aztcd_media_change modified
+ Werner Zimmermann, May 16, 96
+ V2.60 Implemented Auto-Probing; made changes for kernel's 2.1.xx blocksize
+ Adaption to linux kernel > 2.1.0
+ Werner Zimmermann, Nov 29, 97
+
+ 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>
+*/
+
+#include <linux/blkdev.h>
+#include "aztcd.h"
+
+#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>
+
+/*###########################################################################
+ Defines
+ ###########################################################################
+*/
+
+#define MAJOR_NR AZTECH_CDROM_MAJOR
+#define QUEUE (azt_queue)
+#define CURRENT elv_next_request(azt_queue)
+#define SET_TIMER(func, jifs) delay_timer.expires = jiffies + (jifs); \
+ delay_timer.function = (void *) (func); \
+ add_timer(&delay_timer);
+
+#define CLEAR_TIMER del_timer(&delay_timer);
+
+#define RETURNM(message,value) {printk("aztcd: Warning: %s failed\n",message);\
+ return value;}
+#define RETURN(message) {printk("aztcd: Warning: %s failed\n",message);\
+ return;}
+
+/* Macros to switch the IDE-interface to the slave device and back to the master*/
+#define SWITCH_IDE_SLAVE outb_p(0xa0,azt_port+6); \
+ outb_p(0x10,azt_port+6); \
+ outb_p(0x00,azt_port+7); \
+ outb_p(0x10,azt_port+6);
+#define SWITCH_IDE_MASTER outb_p(0xa0,azt_port+6);
+
+
+#if 0
+#define AZT_TEST
+#define AZT_TEST1 /* <int-..> */
+#define AZT_TEST2 /* do_aztcd_request */
+#define AZT_TEST3 /* AZT_S_state */
+#define AZT_TEST4 /* QUICK_LOOP-counter */
+#define AZT_TEST5 /* port(1) state */
+#define AZT_DEBUG
+#define AZT_DEBUG_MULTISESSION
+#endif
+
+static struct request_queue *azt_queue;
+
+static int current_valid(void)
+{
+ return CURRENT &&
+ CURRENT->cmd == READ &&
+ CURRENT->sector != -1;
+}
+
+#define AFL_STATUSorDATA (AFL_STATUS | AFL_DATA)
+#define AZT_BUF_SIZ 16
+
+#define READ_TIMEOUT 3000
+
+#define azt_port aztcd /*needed for the modutils */
+
+/*##########################################################################
+ Type Definitions
+ ##########################################################################
+*/
+enum azt_state_e { AZT_S_IDLE, /* 0 */
+ AZT_S_START, /* 1 */
+ AZT_S_MODE, /* 2 */
+ AZT_S_READ, /* 3 */
+ AZT_S_DATA, /* 4 */
+ AZT_S_STOP, /* 5 */
+ AZT_S_STOPPING /* 6 */
+};
+enum azt_read_modes { AZT_MODE_0, /*read mode for audio disks, not supported by Aztech firmware */
+ AZT_MODE_1, /*read mode for normal CD-ROMs */
+ AZT_MODE_2 /*read mode for XA CD-ROMs */
+};
+
+/*##########################################################################
+ Global Variables
+ ##########################################################################
+*/
+static int aztPresent = 0;
+
+static volatile int azt_transfer_is_active = 0;
+
+static char azt_buf[CD_FRAMESIZE_RAW * AZT_BUF_SIZ]; /*buffer for block size conversion */
+#if AZT_PRIVATE_IOCTLS
+static char buf[CD_FRAMESIZE_RAW]; /*separate buffer for the ioctls */
+#endif
+
+static volatile int azt_buf_bn[AZT_BUF_SIZ], azt_next_bn;
+static volatile int azt_buf_in, azt_buf_out = -1;
+static volatile int azt_error = 0;
+static int azt_open_count = 0;
+static volatile enum azt_state_e azt_state = AZT_S_IDLE;
+#ifdef AZT_TEST3
+static volatile enum azt_state_e azt_state_old = AZT_S_STOP;
+static volatile int azt_st_old = 0;
+#endif
+static volatile enum azt_read_modes azt_read_mode = AZT_MODE_1;
+
+static int azt_mode = -1;
+static volatile int azt_read_count = 1;
+
+static int azt_port = AZT_BASE_ADDR;
+
+module_param(azt_port, int, 0);
+
+static int azt_port_auto[16] = AZT_BASE_AUTO;
+
+static char azt_cont = 0;
+static char azt_init_end = 0;
+static char azt_auto_eject = AZT_AUTO_EJECT;
+
+static int AztTimeout, AztTries;
+static DECLARE_WAIT_QUEUE_HEAD(azt_waitq);
+static struct timer_list delay_timer = TIMER_INITIALIZER(NULL, 0, 0);
+
+static struct azt_DiskInfo DiskInfo;
+static struct azt_Toc Toc[MAX_TRACKS];
+static struct azt_Play_msf azt_Play;
+
+static int aztAudioStatus = CDROM_AUDIO_NO_STATUS;
+static char aztDiskChanged = 1;
+static char aztTocUpToDate = 0;
+
+static unsigned char aztIndatum;
+static unsigned long aztTimeOutCount;
+static int aztCmd = 0;
+
+static DEFINE_SPINLOCK(aztSpin);
+
+/*###########################################################################
+ Function Prototypes
+ ###########################################################################
+*/
+/* CDROM Drive Low Level I/O Functions */
+static void aztStatTimer(void);
+
+/* CDROM Drive Command Functions */
+static int aztGetDiskInfo(void);
+#if AZT_MULTISESSION
+static int aztGetMultiDiskInfo(void);
+#endif
+static int aztGetToc(int multi);
+
+/* Kernel Interface Functions */
+static int check_aztcd_media_change(struct gendisk *disk);
+static int aztcd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
+ unsigned long arg);
+static int aztcd_open(struct inode *ip, struct file *fp);
+static int aztcd_release(struct inode *inode, struct file *file);
+
+static struct block_device_operations azt_fops = {
+ .owner = THIS_MODULE,
+ .open = aztcd_open,
+ .release = aztcd_release,
+ .ioctl = aztcd_ioctl,
+ .media_changed = check_aztcd_media_change,
+};
+
+/* Aztcd State Machine: Controls Drive Operating State */
+static void azt_poll(void);
+
+/* Miscellaneous support functions */
+static void azt_hsg2msf(long hsg, struct msf *msf);
+static long azt_msf2hsg(struct msf *mp);
+static void azt_bin2bcd(unsigned char *p);
+static int azt_bcd2bin(unsigned char bcd);
+
+/*##########################################################################
+ CDROM Drive Low Level I/O Functions
+ ##########################################################################
+*/
+/* Macros for the drive hardware interface handshake, these macros use
+ busy waiting */
+/* Wait for OP_OK = drive answers with AFL_OP_OK after receiving a command*/
+# define OP_OK op_ok()
+static void op_ok(void)
+{
+ aztTimeOutCount = 0;
+ do {
+ aztIndatum = inb(DATA_PORT);
+ aztTimeOutCount++;
+ if (aztTimeOutCount >= AZT_TIMEOUT) {
+ printk("aztcd: Error Wait OP_OK\n");
+ break;
+ }
+ } while (aztIndatum != AFL_OP_OK);
+}
+
+/* Wait for PA_OK = drive answers with AFL_PA_OK after receiving parameters*/
+#if 0
+# define PA_OK pa_ok()
+static void pa_ok(void)
+{
+ aztTimeOutCount = 0;
+ do {
+ aztIndatum = inb(DATA_PORT);
+ aztTimeOutCount++;
+ if (aztTimeOutCount >= AZT_TIMEOUT) {
+ printk("aztcd: Error Wait PA_OK\n");
+ break;
+ }
+ } while (aztIndatum != AFL_PA_OK);
+}
+#endif
+
+/* Wait for STEN=Low = handshake signal 'AFL_.._OK available or command executed*/
+# define STEN_LOW sten_low()
+static void sten_low(void)
+{
+ aztTimeOutCount = 0;
+ do {
+ aztIndatum = inb(STATUS_PORT);
+ aztTimeOutCount++;
+ if (aztTimeOutCount >= AZT_TIMEOUT) {
+ if (azt_init_end)
+ printk
+ ("aztcd: Error Wait STEN_LOW commands:%x\n",
+ aztCmd);
+ break;
+ }
+ } while (aztIndatum & AFL_STATUS);
+}
+
+/* Wait for DTEN=Low = handshake signal 'Data available'*/
+# define DTEN_LOW dten_low()
+static void dten_low(void)
+{
+ aztTimeOutCount = 0;
+ do {
+ aztIndatum = inb(STATUS_PORT);
+ aztTimeOutCount++;
+ if (aztTimeOutCount >= AZT_TIMEOUT) {
+ printk("aztcd: Error Wait DTEN_OK\n");
+ break;
+ }
+ } while (aztIndatum & AFL_DATA);
+}
+
+/*
+ * Macro for timer wait on STEN=Low, should only be used for 'slow' commands;
+ * may cause kernel panic when used in the wrong place
+*/
+#define STEN_LOW_WAIT statusAzt()
+static void statusAzt(void)
+{
+ AztTimeout = AZT_STATUS_DELAY;
+ SET_TIMER(aztStatTimer, HZ / 100);
+ sleep_on(&azt_waitq);
+ if (AztTimeout <= 0)
+ printk("aztcd: Error Wait STEN_LOW_WAIT command:%x\n",
+ aztCmd);
+ return;
+}
+
+static void aztStatTimer(void)
+{
+ if (!(inb(STATUS_PORT) & AFL_STATUS)) {
+ wake_up(&azt_waitq);
+ return;
+ }
+ AztTimeout--;
+ if (AztTimeout <= 0) {
+ wake_up(&azt_waitq);
+ printk("aztcd: Error aztStatTimer: Timeout\n");
+ return;
+ }
+ SET_TIMER(aztStatTimer, HZ / 100);
+}
+
+/*##########################################################################
+ CDROM Drive Command Functions
+ ##########################################################################
+*/
+/*
+ * Send a single command, return -1 on error, else 0
+*/
+static int aztSendCmd(int cmd)
+{
+ unsigned char data;
+ int retry;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: Executing command %x\n", cmd);
+#endif
+
+ if ((azt_port == 0x1f0) || (azt_port == 0x170))
+ SWITCH_IDE_SLAVE; /*switch IDE interface to slave configuration */
+
+ aztCmd = cmd;
+ outb(POLLED, MODE_PORT);
+ do {
+ if (inb(STATUS_PORT) & AFL_STATUS)
+ break;
+ inb(DATA_PORT); /* if status left from last command, read and */
+ } while (1); /* discard it */
+ do {
+ if (inb(STATUS_PORT) & AFL_DATA)
+ break;
+ inb(DATA_PORT); /* if data left from last command, read and */
+ } while (1); /* discard it */
+ for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) {
+ outb((unsigned char) cmd, CMD_PORT);
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ if (data == AFL_OP_OK) {
+ return 0;
+ } /*OP_OK? */
+ if (data == AFL_OP_ERR) {
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ printk
+ ("### Error 1 aztcd: aztSendCmd %x Error Code %x\n",
+ cmd, data);
+ }
+ }
+ if (retry >= AZT_RETRY_ATTEMPTS) {
+ printk("### Error 2 aztcd: aztSendCmd %x \n", cmd);
+ azt_error = 0xA5;
+ }
+ RETURNM("aztSendCmd", -1);
+}
+
+/*
+ * Send a play or read command to the drive, return -1 on error, else 0
+*/
+static int sendAztCmd(int cmd, struct azt_Play_msf *params)
+{
+ unsigned char data;
+ int retry;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: play start=%02x:%02x:%02x end=%02x:%02x:%02x\n",
+ params->start.min, params->start.sec, params->start.frame,
+ params->end.min, params->end.sec, params->end.frame);
+#endif
+ for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) {
+ aztSendCmd(cmd);
+ outb(params->start.min, CMD_PORT);
+ outb(params->start.sec, CMD_PORT);
+ outb(params->start.frame, CMD_PORT);
+ outb(params->end.min, CMD_PORT);
+ outb(params->end.sec, CMD_PORT);
+ outb(params->end.frame, CMD_PORT);
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ if (data == AFL_PA_OK) {
+ return 0;
+ } /*PA_OK ? */
+ if (data == AFL_PA_ERR) {
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ printk
+ ("### Error 1 aztcd: sendAztCmd %x Error Code %x\n",
+ cmd, data);
+ }
+ }
+ if (retry >= AZT_RETRY_ATTEMPTS) {
+ printk("### Error 2 aztcd: sendAztCmd %x\n ", cmd);
+ azt_error = 0xA5;
+ }
+ RETURNM("sendAztCmd", -1);
+}
+
+/*
+ * Send a seek command to the drive, return -1 on error, else 0
+*/
+static int aztSeek(struct azt_Play_msf *params)
+{
+ unsigned char data;
+ int retry;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: aztSeek %02x:%02x:%02x\n",
+ params->start.min, params->start.sec, params->start.frame);
+#endif
+ for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) {
+ aztSendCmd(ACMD_SEEK);
+ outb(params->start.min, CMD_PORT);
+ outb(params->start.sec, CMD_PORT);
+ outb(params->start.frame, CMD_PORT);
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ if (data == AFL_PA_OK) {
+ return 0;
+ } /*PA_OK ? */
+ if (data == AFL_PA_ERR) {
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ printk("### Error 1 aztcd: aztSeek\n");
+ }
+ }
+ if (retry >= AZT_RETRY_ATTEMPTS) {
+ printk("### Error 2 aztcd: aztSeek\n ");
+ azt_error = 0xA5;
+ }
+ RETURNM("aztSeek", -1);
+}
+
+/* Send a Set Disk Type command
+ does not seem to work with Aztech drives, behavior is completely indepen-
+ dent on which mode is set ???
+*/
+static int aztSetDiskType(int type)
+{
+ unsigned char data;
+ int retry;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: set disk type command: type= %i\n", type);
+#endif
+ for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) {
+ aztSendCmd(ACMD_SET_DISK_TYPE);
+ outb(type, CMD_PORT);
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ if (data == AFL_PA_OK) { /*PA_OK ? */
+ azt_read_mode = type;
+ return 0;
+ }
+ if (data == AFL_PA_ERR) {
+ STEN_LOW;
+ data = inb(DATA_PORT);
+ printk
+ ("### Error 1 aztcd: aztSetDiskType %x Error Code %x\n",
+ type, data);
+ }
+ }
+ if (retry >= AZT_RETRY_ATTEMPTS) {
+ printk("### Error 2 aztcd: aztSetDiskType %x\n ", type);
+ azt_error = 0xA5;
+ }
+ RETURNM("aztSetDiskType", -1);
+}
+
+
+/* used in azt_poll to poll the status, expects another program to issue a
+ * ACMD_GET_STATUS directly before
+ */
+static int aztStatus(void)
+{
+ int st;
+/* int i;
+
+ i = inb(STATUS_PORT) & AFL_STATUS; is STEN=0? ???
+ if (!i)
+*/ STEN_LOW;
+ if (aztTimeOutCount < AZT_TIMEOUT) {
+ st = inb(DATA_PORT) & 0xFF;
+ return st;
+ } else
+ RETURNM("aztStatus", -1);
+}
+
+/*
+ * Get the drive status
+ */
+static int getAztStatus(void)
+{
+ int st;
+
+ if (aztSendCmd(ACMD_GET_STATUS))
+ RETURNM("getAztStatus 1", -1);
+ STEN_LOW;
+ st = inb(DATA_PORT) & 0xFF;
+#ifdef AZT_DEBUG
+ printk("aztcd: Status = %x\n", st);
+#endif
+ if ((st == 0xFF) || (st & AST_CMD_CHECK)) {
+ printk
+ ("aztcd: AST_CMD_CHECK error or no status available\n");
+ return -1;
+ }
+
+ if (((st & AST_MODE_BITS) != AST_BUSY)
+ && (aztAudioStatus == CDROM_AUDIO_PLAY))
+ /* XXX might be an error? look at q-channel? */
+ aztAudioStatus = CDROM_AUDIO_COMPLETED;
+
+ if ((st & AST_DSK_CHG) || (st & AST_NOT_READY)) {
+ aztDiskChanged = 1;
+ aztTocUpToDate = 0;
+ aztAudioStatus = CDROM_AUDIO_NO_STATUS;
+ }
+ return st;
+}
+
+
+/*
+ * Send a 'Play' command and get the status. Use only from the top half.
+ */
+static int aztPlay(struct azt_Play_msf *arg)
+{
+ if (sendAztCmd(ACMD_PLAY_AUDIO, arg) < 0)
+ RETURNM("aztPlay", -1);
+ return 0;
+}
+
+/*
+ * Subroutines to automatically close the door (tray) and
+ * lock it closed when the cd is mounted. Leave the tray
+ * locking as an option
+ */
+static void aztCloseDoor(void)
+{
+ aztSendCmd(ACMD_CLOSE);
+ STEN_LOW;
+ return;
+}
+
+static void aztLockDoor(void)
+{
+#if AZT_ALLOW_TRAY_LOCK
+ aztSendCmd(ACMD_LOCK);
+ STEN_LOW;
+#endif
+ return;
+}
+
+static void aztUnlockDoor(void)
+{
+#if AZT_ALLOW_TRAY_LOCK
+ aztSendCmd(ACMD_UNLOCK);
+ STEN_LOW;
+#endif
+ return;
+}
+
+/*
+ * Read a value from the drive. Should return quickly, so a busy wait
+ * is used to avoid excessive rescheduling. The read command itself must
+ * be issued with aztSendCmd() directly before
+ */
+static int aztGetValue(unsigned char *result)
+{
+ int s;
+
+ STEN_LOW;
+ if (aztTimeOutCount >= AZT_TIMEOUT) {
+ printk("aztcd: aztGetValue timeout\n");
+ return -1;
+ }
+ s = inb(DATA_PORT) & 0xFF;
+ *result = (unsigned char) s;
+ return 0;
+}
+
+/*
+ * Read the current Q-channel info. Also used for reading the
+ * table of contents.
+ */
+static int aztGetQChannelInfo(struct azt_Toc *qp)
+{
+ unsigned char notUsed;
+ int st;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztGetQChannelInfo Time:%li\n", jiffies);
+#endif
+ if ((st = getAztStatus()) == -1)
+ RETURNM("aztGetQChannelInfo 1", -1);
+ if (aztSendCmd(ACMD_GET_Q_CHANNEL))
+ RETURNM("aztGetQChannelInfo 2", -1);
+ /*STEN_LOW_WAIT; ??? Dosemu0.60's cdrom.c does not like STEN_LOW_WAIT here */
+ if (aztGetValue(&notUsed))
+ RETURNM("aztGetQChannelInfo 3", -1); /*??? Nullbyte einlesen */
+ if ((st & AST_MODE_BITS) == AST_INITIAL) {
+ qp->ctrl_addr = 0; /* when audio stop ACMD_GET_Q_CHANNEL returns */
+ qp->track = 0; /* only one byte with Aztech drives */
+ qp->pointIndex = 0;
+ qp->trackTime.min = 0;
+ qp->trackTime.sec = 0;
+ qp->trackTime.frame = 0;
+ qp->diskTime.min = 0;
+ qp->diskTime.sec = 0;
+ qp->diskTime.frame = 0;
+ return 0;
+ } else {
+ if (aztGetValue(&qp->ctrl_addr) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->track) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->pointIndex) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->trackTime.min) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->trackTime.sec) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->trackTime.frame) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&notUsed) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->diskTime.min) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->diskTime.sec) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ if (aztGetValue(&qp->diskTime.frame) < 0)
+ RETURNM("aztGetQChannelInfo 4", -1);
+ }
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztGetQChannelInfo Time:%li\n", jiffies);
+#endif
+ return 0;
+}
+
+/*
+ * Read the table of contents (TOC) and TOC header if necessary
+ */
+static int aztUpdateToc(void)
+{
+ int st;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztUpdateToc Time:%li\n", jiffies);
+#endif
+ if (aztTocUpToDate)
+ return 0;
+
+ if (aztGetDiskInfo() < 0)
+ return -EIO;
+
+ if (aztGetToc(0) < 0)
+ return -EIO;
+
+ /*audio disk detection
+ with my Aztech drive there is no audio status bit, so I use the copy
+ protection bit of the first track. If this track is copy protected
+ (copy bit = 0), I assume, it's an audio disk. Strange, but works ??? */
+ if (!(Toc[DiskInfo.first].ctrl_addr & 0x40))
+ DiskInfo.audio = 1;
+ else
+ DiskInfo.audio = 0;
+
+ /* XA detection */
+ if (!DiskInfo.audio) {
+ azt_Play.start.min = 0; /*XA detection only seems to work */
+ azt_Play.start.sec = 2; /*when we play a track */
+ azt_Play.start.frame = 0;
+ azt_Play.end.min = 0;
+ azt_Play.end.sec = 0;
+ azt_Play.end.frame = 1;
+ if (sendAztCmd(ACMD_PLAY_READ, &azt_Play))
+ return -1;
+ DTEN_LOW;
+ for (st = 0; st < CD_FRAMESIZE; st++)
+ inb(DATA_PORT);
+ }
+ DiskInfo.xa = getAztStatus() & AST_MODE;
+ if (DiskInfo.xa) {
+ printk
+ ("aztcd: XA support experimental - mail results to Werner.Zimmermann@fht-esslingen.de\n");
+ }
+
+ /*multisession detection
+ support for multisession CDs is done automatically with Aztech drives,
+ we don't have to take care about TOC redirection; if we want the isofs
+ to take care about redirection, we have to set AZT_MULTISESSION to 1 */
+ DiskInfo.multi = 0;
+#if AZT_MULTISESSION
+ if (DiskInfo.xa) {
+ aztGetMultiDiskInfo(); /*here Disk.Info.multi is set */
+ }
+#endif
+ if (DiskInfo.multi) {
+ DiskInfo.lastSession.min = Toc[DiskInfo.next].diskTime.min;
+ DiskInfo.lastSession.sec = Toc[DiskInfo.next].diskTime.sec;
+ DiskInfo.lastSession.frame =
+ Toc[DiskInfo.next].diskTime.frame;
+ printk("aztcd: Multisession support experimental\n");
+ } else {
+ DiskInfo.lastSession.min =
+ Toc[DiskInfo.first].diskTime.min;
+ DiskInfo.lastSession.sec =
+ Toc[DiskInfo.first].diskTime.sec;
+ DiskInfo.lastSession.frame =
+ Toc[DiskInfo.first].diskTime.frame;
+ }
+
+ aztTocUpToDate = 1;
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztUpdateToc Time:%li\n", jiffies);
+#endif
+ return 0;
+}
+
+
+/* Read the table of contents header, i.e. no. of tracks and start of first
+ * track
+ */
+static int aztGetDiskInfo(void)
+{
+ int limit;
+ unsigned char test;
+ struct azt_Toc qInfo;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztGetDiskInfo Time:%li\n", jiffies);
+#endif
+ if (aztSendCmd(ACMD_SEEK_TO_LEADIN))
+ RETURNM("aztGetDiskInfo 1", -1);
+ STEN_LOW_WAIT;
+ test = 0;
+ for (limit = 300; limit > 0; limit--) {
+ if (aztGetQChannelInfo(&qInfo) < 0)
+ RETURNM("aztGetDiskInfo 2", -1);
+ if (qInfo.pointIndex == 0xA0) { /*Number of FirstTrack */
+ DiskInfo.first = qInfo.diskTime.min;
+ DiskInfo.first = azt_bcd2bin(DiskInfo.first);
+ test = test | 0x01;
+ }
+ if (qInfo.pointIndex == 0xA1) { /*Number of LastTrack */
+ DiskInfo.last = qInfo.diskTime.min;
+ DiskInfo.last = azt_bcd2bin(DiskInfo.last);
+ test = test | 0x02;
+ }
+ if (qInfo.pointIndex == 0xA2) { /*DiskLength */
+ DiskInfo.diskLength.min = qInfo.diskTime.min;
+ DiskInfo.diskLength.sec = qInfo.diskTime.sec;
+ DiskInfo.diskLength.frame = qInfo.diskTime.frame;
+ test = test | 0x04;
+ }
+ if ((qInfo.pointIndex == DiskInfo.first) && (test & 0x01)) { /*StartTime of First Track */
+ DiskInfo.firstTrack.min = qInfo.diskTime.min;
+ DiskInfo.firstTrack.sec = qInfo.diskTime.sec;
+ DiskInfo.firstTrack.frame = qInfo.diskTime.frame;
+ test = test | 0x08;
+ }
+ if (test == 0x0F)
+ break;
+ }
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztGetDiskInfo Time:%li\n", jiffies);
+ printk
+ ("Disk Info: first %d last %d length %02X:%02X.%02X dez first %02X:%02X.%02X dez\n",
+ DiskInfo.first, DiskInfo.last, DiskInfo.diskLength.min,
+ DiskInfo.diskLength.sec, DiskInfo.diskLength.frame,
+ DiskInfo.firstTrack.min, DiskInfo.firstTrack.sec,
+ DiskInfo.firstTrack.frame);
+#endif
+ if (test != 0x0F)
+ return -1;
+ return 0;
+}
+
+#if AZT_MULTISESSION
+/*
+ * Get Multisession Disk Info
+ */
+static int aztGetMultiDiskInfo(void)
+{
+ int limit, k = 5;
+ unsigned char test;
+ struct azt_Toc qInfo;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztGetMultiDiskInfo\n");
+#endif
+
+ do {
+ azt_Play.start.min = Toc[DiskInfo.last + 1].diskTime.min;
+ azt_Play.start.sec = Toc[DiskInfo.last + 1].diskTime.sec;
+ azt_Play.start.frame =
+ Toc[DiskInfo.last + 1].diskTime.frame;
+ test = 0;
+
+ for (limit = 30; limit > 0; limit--) { /*Seek for LeadIn of next session */
+ if (aztSeek(&azt_Play))
+ RETURNM("aztGetMultiDiskInfo 1", -1);
+ if (aztGetQChannelInfo(&qInfo) < 0)
+ RETURNM("aztGetMultiDiskInfo 2", -1);
+ if ((qInfo.track == 0) && (qInfo.pointIndex))
+ break; /*LeadIn found */
+ if ((azt_Play.start.sec += 10) > 59) {
+ azt_Play.start.sec = 0;
+ azt_Play.start.min++;
+ }
+ }
+ if (!limit)
+ break; /*Check, if a leadin track was found, if not we're
+ at the end of the disk */
+#ifdef AZT_DEBUG_MULTISESSION
+ printk("leadin found track %d pointIndex %x limit %d\n",
+ qInfo.track, qInfo.pointIndex, limit);
+#endif
+ for (limit = 300; limit > 0; limit--) {
+ if (++azt_Play.start.frame > 74) {
+ azt_Play.start.frame = 0;
+ if (azt_Play.start.sec > 59) {
+ azt_Play.start.sec = 0;
+ azt_Play.start.min++;
+ }
+ }
+ if (aztSeek(&azt_Play))
+ RETURNM("aztGetMultiDiskInfo 3", -1);
+ if (aztGetQChannelInfo(&qInfo) < 0)
+ RETURNM("aztGetMultiDiskInfo 4", -1);
+ if (qInfo.pointIndex == 0xA0) { /*Number of NextTrack */
+ DiskInfo.next = qInfo.diskTime.min;
+ DiskInfo.next = azt_bcd2bin(DiskInfo.next);
+ test = test | 0x01;
+ }
+ if (qInfo.pointIndex == 0xA1) { /*Number of LastTrack */
+ DiskInfo.last = qInfo.diskTime.min;
+ DiskInfo.last = azt_bcd2bin(DiskInfo.last);
+ test = test | 0x02;
+ }
+ if (qInfo.pointIndex == 0xA2) { /*DiskLength */
+ DiskInfo.diskLength.min =
+ qInfo.diskTime.min;
+ DiskInfo.diskLength.sec =
+ qInfo.diskTime.sec;
+ DiskInfo.diskLength.frame =
+ qInfo.diskTime.frame;
+ test = test | 0x04;
+ }
+ if ((qInfo.pointIndex == DiskInfo.next) && (test & 0x01)) { /*StartTime of Next Track */
+ DiskInfo.nextSession.min =
+ qInfo.diskTime.min;
+ DiskInfo.nextSession.sec =
+ qInfo.diskTime.sec;
+ DiskInfo.nextSession.frame =
+ qInfo.diskTime.frame;
+ test = test | 0x08;
+ }
+ if (test == 0x0F)
+ break;
+ }
+#ifdef AZT_DEBUG_MULTISESSION
+ printk
+ ("MultiDisk Info: first %d next %d last %d length %02x:%02x.%02x dez first %02x:%02x.%02x dez next %02x:%02x.%02x dez\n",
+ DiskInfo.first, DiskInfo.next, DiskInfo.last,
+ DiskInfo.diskLength.min, DiskInfo.diskLength.sec,
+ DiskInfo.diskLength.frame, DiskInfo.firstTrack.min,
+ DiskInfo.firstTrack.sec, DiskInfo.firstTrack.frame,
+ DiskInfo.nextSession.min, DiskInfo.nextSession.sec,
+ DiskInfo.nextSession.frame);
+#endif
+ if (test != 0x0F)
+ break;
+ else
+ DiskInfo.multi = 1; /*found TOC of more than one session */
+ aztGetToc(1);
+ } while (--k);
+
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztGetMultiDiskInfo Time:%li\n", jiffies);
+#endif
+ return 0;
+}
+#endif
+
+/*
+ * Read the table of contents (TOC)
+ */
+static int aztGetToc(int multi)
+{
+ int i, px;
+ int limit;
+ struct azt_Toc qInfo;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztGetToc Time:%li\n", jiffies);
+#endif
+ if (!multi) {
+ for (i = 0; i < MAX_TRACKS; i++)
+ Toc[i].pointIndex = 0;
+ i = DiskInfo.last + 3;
+ } else {
+ for (i = DiskInfo.next; i < MAX_TRACKS; i++)
+ Toc[i].pointIndex = 0;
+ i = DiskInfo.last + 4 - DiskInfo.next;
+ }
+
+/*Is there a good reason to stop motor before TOC read?
+ if (aztSendCmd(ACMD_STOP)) RETURNM("aztGetToc 1",-1);
+ STEN_LOW_WAIT;
+*/
+
+ if (!multi) {
+ azt_mode = 0x05;
+ if (aztSendCmd(ACMD_SEEK_TO_LEADIN))
+ RETURNM("aztGetToc 2", -1);
+ STEN_LOW_WAIT;
+ }
+ for (limit = 300; limit > 0; limit--) {
+ if (multi) {
+ if (++azt_Play.start.sec > 59) {
+ azt_Play.start.sec = 0;
+ azt_Play.start.min++;
+ }
+ if (aztSeek(&azt_Play))
+ RETURNM("aztGetToc 3", -1);
+ }
+ if (aztGetQChannelInfo(&qInfo) < 0)
+ break;
+
+ px = azt_bcd2bin(qInfo.pointIndex);
+
+ if (px > 0 && px < MAX_TRACKS && qInfo.track == 0)
+ if (Toc[px].pointIndex == 0) {
+ Toc[px] = qInfo;
+ i--;
+ }
+
+ if (i <= 0)
+ break;
+ }
+
+ Toc[DiskInfo.last + 1].diskTime = DiskInfo.diskLength;
+ Toc[DiskInfo.last].trackTime = DiskInfo.diskLength;
+
+#ifdef AZT_DEBUG_MULTISESSION
+ printk("aztcd: exiting aztGetToc\n");
+ for (i = 1; i <= DiskInfo.last + 1; i++)
+ printk
+ ("i = %2d ctl-adr = %02X track %2d px %02X %02X:%02X.%02X dez %02X:%02X.%02X dez\n",
+ i, Toc[i].ctrl_addr, Toc[i].track, Toc[i].pointIndex,
+ Toc[i].trackTime.min, Toc[i].trackTime.sec,
+ Toc[i].trackTime.frame, Toc[i].diskTime.min,
+ Toc[i].diskTime.sec, Toc[i].diskTime.frame);
+ for (i = 100; i < 103; i++)
+ printk
+ ("i = %2d ctl-adr = %02X track %2d px %02X %02X:%02X.%02X dez %02X:%02X.%02X dez\n",
+