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-rw-r--r--drivers/block/aztcd.c1713
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diff --git a/drivers/block/aztcd.c b/drivers/block/aztcd.c
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--- /dev/null
+++ b/drivers/block/aztcd.c
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+#define AZT_VERSION "V1.0"
+/* $Id: aztcd.c,v 1.0 1995/03/25 08:27:11 root Exp $
+ linux/drivers/block/aztcd.c - AztechCD268 CDROM driver
+
+ Copyright (C) 1994,1995 Werner Zimmermann (zimmerma@rz.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 Adaptec 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
+ NOTE:
+ Points marked with ??? are questionable !
+*/
+#include <linux/major.h>
+#include <linux/config.h>
+
+#ifdef MODULE
+# include <linux/module.h>
+# include <linux/version.h>
+# ifndef CONFIG_MODVERSIONS
+ char kernel_version[]= UTS_RELEASE;
+# endif
+#endif
+
+#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 <asm/system.h>
+#include <asm/io.h>
+#include <asm/segment.h>
+
+#define MAJOR_NR AZTECH_CDROM_MAJOR
+
+#ifdef MODULE
+# include "/usr/src/linux/drivers/block/blk.h"
+#else
+# include "blk.h"
+# define MOD_INC_USE_COUNT
+# define MOD_DEC_USE_COUNT
+#endif
+
+#include <linux/aztcd.h>
+
+static int aztPresent = 0;
+
+#if 0
+#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
+#endif
+
+#define CURRENT_VALID \
+ (CURRENT && MAJOR(CURRENT -> dev) == MAJOR_NR && CURRENT -> cmd == READ \
+ && CURRENT -> sector != -1)
+
+#define AFL_STATUSorDATA (AFL_STATUS | AFL_DATA)
+#define AZT_BUF_SIZ 16
+
+static volatile int azt_transfer_is_active=0;
+
+static char azt_buf[2048*AZT_BUF_SIZ]; /*buffer for block size conversion*/
+#ifdef AZT_PRIVATE_IOCTLS
+static char buf[2336]; /*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;
+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 */
+};
+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 int azt_mode = -1;
+static int ACMD_DATA_READ= ACMD_PLAY_READ;
+static volatile int azt_read_count = 1;
+
+#define READ_TIMEOUT 3000
+
+#define azt_port aztcd /*needed for the modutils*/
+static short azt_port = AZT_BASE_ADDR;
+
+static char azt_cont = 0;
+static char azt_init_end = 0;
+
+static int AztTimeout, AztTries;
+static struct wait_queue *azt_waitq = NULL;
+static struct timer_list delay_timer = { NULL, NULL, 0, 0, NULL };
+
+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 void azt_transfer(void);
+static void azt_poll(void);
+static void azt_invalidate_buffers(void);
+static void do_aztcd_request(void);
+static void azt_hsg2msf(long hsg, struct msf *msf);
+static void azt_bin2bcd(unsigned char *p);
+static int azt_bcd2bin(unsigned char bcd);
+static int aztStatus(void);
+static int getAztStatus(void);
+static int aztSendCmd(int cmd);
+static int sendAztCmd(int cmd, struct azt_Play_msf *params);
+static int aztGetQChannelInfo(struct azt_Toc *qp);
+static int aztUpdateToc(void);
+static int aztGetDiskInfo(void);
+static int aztGetToc(void);
+static int aztGetValue(unsigned char *result);
+static void aztStatTimer(void);
+static void aztCloseDoor(void);
+static void aztLockDoor(void);
+static void aztUnlockDoor(void);
+
+static unsigned char aztIndatum;
+static unsigned long aztTimeOutCount;
+
+/* 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()
+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*/
+# define PA_OK pa_ok()
+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);
+}
+
+/* Wait for STEN=Low = handshake signal 'AFL_.._OK available or command executed*/
+# define STEN_LOW sten_low()
+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\n");
+ break;
+ }
+ } while (aztIndatum&AFL_STATUS);
+}
+
+/* Wait for DTEN=Low = handshake signal 'Data available'*/
+# define DTEN_LOW dten_low()
+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()
+void statusAzt(void)
+{ AztTimeout = AZT_STATUS_DELAY;
+ SET_TIMER(aztStatTimer, 1);
+ sleep_on(&azt_waitq);
+ if (AztTimeout <= 0) printk("aztcd: Error Wait STEN_LOW_WAIT\n");
+ return;
+}
+
+static void aztStatTimer(void)
+{ if (!(inb(STATUS_PORT) & AFL_STATUS))
+ { wake_up(&azt_waitq);
+ return;
+ }
+ AztTimeout--;
+ if (AztTimeout <= 0)
+ { wake_up(&azt_waitq);
+ return;
+ }
+ SET_TIMER(aztStatTimer, 1);
+}
+
+
+void aztcd_setup(char *str, int *ints)
+{ if (ints[0] > 0)
+ azt_port = ints[1];
+ if (ints[0] > 1)
+ azt_cont = ints[2];
+}
+
+/*
+ * 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)
+{
+#ifdef AZT_ALLOW_TRAY_LOCK
+ aztSendCmd(ACMD_LOCK);
+ STEN_LOW;
+#endif
+ return;
+}
+
+static void aztUnlockDoor(void)
+{
+#ifdef AZT_ALLOW_TRAY_LOCK
+ aztSendCmd(ACMD_UNLOCK);
+ STEN_LOW;
+#endif
+ return;
+}
+
+/*
+ * 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
+ 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;
+ }
+ return -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("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;
+ }
+ return -1;
+}
+
+
+/*
+ * Checking if the media has been changed not yet implemented
+*/
+static int check_aztcd_media_change(dev_t full_dev)
+{ return 0;
+}
+
+
+/* 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)
+ {
+ st = inb(DATA_PORT) & 0xFF;
+ return st;
+ }
+ else
+ return -1;
+}
+
+/*
+ * Get the drive status
+ */
+static int getAztStatus(void)
+{ int st;
+
+ if (aztSendCmd(ACMD_GET_STATUS)) return -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)
+ {
+ 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) return -1;
+ return 0;
+}
+
+
+long azt_msf2hsg(struct msf *mp)
+{
+#ifdef AZT_DEBUG
+ if (mp->min >=70) printk("aztcd: Error msf2hsg address Minutes\n");
+ if (mp->sec >=60) printk("aztcd: Error msf2hsg address Seconds\n");
+ if (mp->frame>=75) printk("aztcd: Error msf2hsg address Frames\n");
+#endif
+ return azt_bcd2bin(mp -> frame)
+ + azt_bcd2bin(mp -> sec) * 75
+ + azt_bcd2bin(mp -> min) * 4500
+ - 150;
+}
+
+static int aztcd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
+{ int i, st;
+ struct azt_Toc qInfo;
+ struct cdrom_ti ti;
+ struct cdrom_tochdr tocHdr;
+ struct cdrom_msf msf;
+ struct cdrom_tocentry entry;
+ struct azt_Toc *tocPtr;
+ struct cdrom_subchnl subchnl;
+ struct cdrom_volctrl volctrl;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztcd_ioctl - Command:%x\n",cmd);
+#endif
+ if (!ip) return -EINVAL;
+ if (getAztStatus()<0) return -EIO;
+ if (!aztTocUpToDate)
+ { if ((i=aztUpdateToc())<0) return i; /* error reading TOC */
+ }
+
+ switch (cmd)
+ {
+ case CDROMSTART: /* Spin up the drive. Don't know, what to do,
+ at least close the tray */
+#ifdef AZT_PRIVATE_IOCTLS
+ if (aztSendCmd(ACMD_CLOSE)) return -1;
+ STEN_LOW_WAIT;
+#endif
+ break;
+ case CDROMSTOP: /* Spin down the drive */
+ if (aztSendCmd(ACMD_STOP)) return -1;
+ STEN_LOW_WAIT;
+ /* should we do anything if it fails? */
+ aztAudioStatus = CDROM_AUDIO_NO_STATUS;
+ break;
+ case CDROMPAUSE: /* Pause the drive */
+ if (aztAudioStatus != CDROM_AUDIO_PLAY) return -EINVAL;
+
+ if (aztGetQChannelInfo(&qInfo) < 0)
+ { /* didn't get q channel info */
+ aztAudioStatus = CDROM_AUDIO_NO_STATUS;
+ return 0;
+ }
+ azt_Play.start = qInfo.diskTime; /* remember restart point */
+ if (aztSendCmd(ACMD_PAUSE)) return -1;
+ STEN_LOW_WAIT;
+ aztAudioStatus = CDROM_AUDIO_PAUSED;
+ break;
+ case CDROMRESUME: /* Play it again, Sam */
+ if (aztAudioStatus != CDROM_AUDIO_PAUSED) return -EINVAL;
+ /* restart the drive at the saved position. */
+ i = aztPlay(&azt_Play);
+ if (i < 0)
+ { aztAudioStatus = CDROM_AUDIO_ERROR;
+ return -EIO;
+ }
+ aztAudioStatus = CDROM_AUDIO_PLAY;
+ break;
+ case CDROMPLAYTRKIND: /* Play a track. This currently ignores index. */
+ st = verify_area(VERIFY_READ, (void *) arg, sizeof ti);
+ if (st) return st;
+ memcpy_fromfs(&ti, (void *) arg, sizeof ti);
+ if (ti.cdti_trk0 < DiskInfo.first
+ || ti.cdti_trk0 > DiskInfo.last
+ || ti.cdti_trk1 < ti.cdti_trk0)
+ { return -EINVAL;
+ }
+ if (ti.cdti_trk1 > DiskInfo.last)
+ ti. cdti_trk1 = DiskInfo.last;
+ azt_Play.start = Toc[ti.cdti_trk0].diskTime;
+ azt_Play.end = Toc[ti.cdti_trk1 + 1].diskTime;
+#ifdef AZT_DEBUG
+printk("aztcd play: %02x:%02x.%02x to %02x:%02x.%02x\n",
+ azt_Play.start.min, azt_Play.start.sec, azt_Play.start.frame,
+ azt_Play.end.min, azt_Play.end.sec, azt_Play.end.frame);
+#endif
+ i = aztPlay(&azt_Play);
+ if (i < 0)
+ { aztAudioStatus = CDROM_AUDIO_ERROR;
+ return -EIO;
+ }
+ aztAudioStatus = CDROM_AUDIO_PLAY;
+ break;
+ case CDROMPLAYMSF: /* Play starting at the given MSF address. */
+/* if (aztAudioStatus == CDROM_AUDIO_PLAY)
+ { if (aztSendCmd(ACMD_STOP)) return -1;
+ STEN_LOW;
+ aztAudioStatus = CDROM_AUDIO_NO_STATUS;
+ }
+*/
+ st = verify_area(VERIFY_READ, (void *) arg, sizeof msf);
+ if (st) return st;
+ memcpy_fromfs(&msf, (void *) arg, sizeof msf);
+ /* convert to bcd */
+ azt_bin2bcd(&msf.cdmsf_min0);
+ azt_bin2bcd(&msf.cdmsf_sec0);
+ azt_bin2bcd(&msf.cdmsf_frame0);
+ azt_bin2bcd(&msf.cdmsf_min1);
+ azt_bin2bcd(&msf.cdmsf_sec1);
+ azt_bin2bcd(&msf.cdmsf_frame1);
+ azt_Play.start.min = msf.cdmsf_min0;
+ azt_Play.start.sec = msf.cdmsf_sec0;
+ azt_Play.start.frame = msf.cdmsf_frame0;
+ azt_Play.end.min = msf.cdmsf_min1;
+ azt_Play.end.sec = msf.cdmsf_sec1;
+ azt_Play.end.frame = msf.cdmsf_frame1;
+#ifdef AZT_DEBUG
+printk("aztcd play: %02x:%02x.%02x to %02x:%02x.%02x\n",
+azt_Play.start.min, azt_Play.start.sec, azt_Play.start.frame,
+azt_Play.end.min, azt_Play.end.sec, azt_Play.end.frame);
+#endif
+ i = aztPlay(&azt_Play);
+ if (i < 0)
+ { aztAudioStatus = CDROM_AUDIO_ERROR;
+ return -EIO;
+ }
+ aztAudioStatus = CDROM_AUDIO_PLAY;
+ break;
+
+ case CDROMREADTOCHDR: /* Read the table of contents header */
+ st = verify_area(VERIFY_WRITE, (void *) arg, sizeof tocHdr);
+ if (st) return st;
+ tocHdr.cdth_trk0 = DiskInfo.first;
+ tocHdr.cdth_trk1 = DiskInfo.last;
+ memcpy_tofs((void *) arg, &tocHdr, sizeof tocHdr);
+ break;
+ case CDROMREADTOCENTRY: /* Read an entry in the table of contents */
+ st = verify_area(VERIFY_READ, (void *) arg, sizeof entry);
+ if (st) return st;
+ st = verify_area(VERIFY_WRITE, (void *) arg, sizeof entry);
+ if (st) return st;
+ memcpy_fromfs(&entry, (void *) arg, sizeof entry);
+ if (!aztTocUpToDate) aztGetDiskInfo();
+ if (entry.cdte_track == CDROM_LEADOUT)
+ tocPtr = &Toc[DiskInfo.last + 1]; /* ??? */
+ else if (entry.cdte_track > DiskInfo.last
+ || entry.cdte_track < DiskInfo.first)
+ { return -EINVAL;
+ }
+ else
+ tocPtr = &Toc[entry.cdte_track];
+ entry.cdte_adr = tocPtr -> ctrl_addr;
+ entry.cdte_ctrl = tocPtr -> ctrl_addr >> 4;
+ if (entry.cdte_format == CDROM_LBA)
+ entry.cdte_addr.lba = azt_msf2hsg(&tocPtr -> diskTime);
+ else if (entry.cdte_format == CDROM_MSF)
+ { entry.cdte_addr.msf.minute = azt_bcd2bin(tocPtr -> diskTime.min);
+ entry.cdte_addr.msf.second = azt_bcd2bin(tocPtr -> diskTime.sec);
+ entry.cdte_addr.msf.frame = azt_bcd2bin(tocPtr -> diskTime.frame);
+ }
+ else
+ { return -EINVAL;
+ }
+ memcpy_tofs((void *) arg, &entry, sizeof entry);
+ break;
+ case CDROMSUBCHNL: /* Get subchannel info */
+ st = verify_area(VERIFY_READ, (void *) arg, sizeof subchnl);
+ if (st) return st;
+ st = verify_area(VERIFY_WRITE, (void *) arg, sizeof subchnl);
+ if (st) return st;
+ memcpy_fromfs(&subchnl, (void *) arg, sizeof subchnl);
+ if (aztGetQChannelInfo(&qInfo) < 0)
+ return -EIO;
+ subchnl.cdsc_audiostatus = aztAudioStatus;
+ subchnl.cdsc_adr = qInfo.ctrl_addr;
+ subchnl.cdsc_ctrl = qInfo.ctrl_addr >> 4;
+ subchnl.cdsc_trk = azt_bcd2bin(qInfo.track);
+ subchnl.cdsc_ind = azt_bcd2bin(qInfo.pointIndex);
+ if (subchnl.cdsc_format == CDROM_LBA)
+ { subchnl.cdsc_absaddr.lba = azt_msf2hsg(&qInfo.diskTime);
+ subchnl.cdsc_reladdr.lba = azt_msf2hsg(&qInfo.trackTime);
+ }
+ else if (subchnl.cdsc_format == CDROM_MSF)
+ { subchnl.cdsc_absaddr.msf.minute = azt_bcd2bin(qInfo.diskTime.min);
+ subchnl.cdsc_absaddr.msf.second = azt_bcd2bin(qInfo.diskTime.sec);
+ subchnl.cdsc_absaddr.msf.frame = azt_bcd2bin(qInfo.diskTime.frame);
+ subchnl.cdsc_reladdr.msf.minute = azt_bcd2bin(qInfo.trackTime.min);
+ subchnl.cdsc_reladdr.msf.second = azt_bcd2bin(qInfo.trackTime.sec);
+ subchnl.cdsc_reladdr.msf.frame = azt_bcd2bin(qInfo.trackTime.frame);
+ }
+ else
+ return -EINVAL;
+ memcpy_tofs((void *) arg, &subchnl, sizeof subchnl);
+ break;
+ case CDROMVOLCTRL: /* Volume control
+ * With my Aztech CD268-01A volume control does not work, I can only
+ turn the channels on (any value !=0) or off (value==0). Maybe it
+ works better with your drive */
+ st=verify_area(VERIFY_READ,(void *) arg, sizeof(volctrl));
+ if (st) return (st);
+ memcpy_fromfs(&volctrl,(char *) arg,sizeof(volctrl));
+ azt_Play.start.min = 0x21;
+ azt_Play.start.sec = 0x84;
+ azt_Play.start.frame = volctrl.channel0;
+ azt_Play.end.min = volctrl.channel1;
+ azt_Play.end.sec = volctrl.channel2;
+ azt_Play.end.frame = volctrl.channel3;
+ sendAztCmd(ACMD_SET_VOLUME, &azt_Play);
+ STEN_LOW_WAIT;
+ break;
+ case CDROMEJECT:
+ aztUnlockDoor(); /* Assume user knows what they're doing */
+ /* all drives can at least stop! */
+ if (aztAudioStatus == CDROM_AUDIO_PLAY)
+ { if (aztSendCmd(ACMD_STOP)) return -1;
+ STEN_LOW_WAIT;
+ }
+ if (aztSendCmd(ACMD_EJECT)) return -1;
+ aztAudioStatus = CDROM_AUDIO_NO_STATUS;
+ break;
+ case CDROMREADMODE1: /*read data in mode 1 (2048 Bytes)*/
+ case CDROMREADMODE2: /*read data in mode 2 (2336 Bytes)*/
+/*Take care, the following code is not compatible with other CD-ROM drivers,
+ use it at your own risk with cdplay.c. Normally it is not activated, as
+ AZT_PRIVATE_IOCTLS is not defined
+*/
+#ifdef AZT_PRIVATE_IOCTLS
+ { st = verify_area(VERIFY_READ, (void *) arg, sizeof msf);
+ if (st) return st;
+ st = verify_area(VERIFY_WRITE, (void *) arg, sizeof buf);
+ if (st) return st;
+ memcpy_fromfs(&msf, (void *) arg, sizeof msf);
+ /* convert to bcd */
+ azt_bin2bcd(&msf.cdmsf_min0);
+ azt_bin2bcd(&msf.cdmsf_sec0);
+ azt_bin2bcd(&msf.cdmsf_frame0);
+ msf.cdmsf_min1=0;
+ msf.cdmsf_sec1=0;
+ msf.cdmsf_frame1=1; /*read only one frame*/
+ azt_Play.start.min = msf.cdmsf_min0;
+ azt_Play.start.sec = msf.cdmsf_sec0;
+ azt_Play.start.frame = msf.cdmsf_frame0;
+ azt_Play.end.min = msf.cdmsf_min1;
+ azt_Play.end.sec = msf.cdmsf_sec1;
+ azt_Play.end.frame = msf.cdmsf_frame1;
+ if (cmd==CDROMREADMODE1)
+ { sendAztCmd(ACMD_DATA_READ, &azt_Play);
+ DTEN_LOW;
+ insb(DATA_PORT,buf,2048);
+ memcpy_tofs((void *) arg, &buf, 2048);
+ }
+ else /*CDROMREADMODE2*/
+ { sendAztCmd(ACMD_DATA_READ_RAW, &azt_Play);
+ DTEN_LOW;
+ insb(DATA_PORT,buf,2336);
+ memcpy_tofs((void *) arg, &buf, 2336);
+ }
+ }
+#endif /*end of incompatible code*/
+ break;
+ default:
+ return -EINVAL;
+ }
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztcd_ioctl\n");
+#endif
+ return 0;
+}
+
+
+/*
+ * Take care of the different block sizes between cdrom and Linux.
+ * When Linux gets variable block sizes this will probably go away.
+ */
+static void azt_transfer(void)
+{
+#ifdef AZT_TEST
+ printk("aztcd: executing azt_transfer\n");
+#endif
+ if (CURRENT_VALID) {
+ while (CURRENT -> nr_sectors) {
+ int bn = CURRENT -> sector / 4;
+ int i;
+ for (i = 0; i < AZT_BUF_SIZ && azt_buf_bn[i] != bn; ++i)
+ ;
+ if (i < AZT_BUF_SIZ) {
+ int offs = (i * 4 + (CURRENT -> sector & 3)) * 512;
+ int nr_sectors = 4 - (CURRENT -> sector & 3);
+ if (azt_buf_out != i) {
+ azt_buf_out = i;
+ if (azt_buf_bn[i] != bn) {
+ azt_buf_out = -1;
+ continue;
+ }
+ }
+ if (nr_sectors > CURRENT -> nr_sectors)
+ nr_sectors = CURRENT -> nr_sectors;
+ memcpy(CURRENT -> buffer, azt_buf + offs, nr_sectors * 512);
+ CURRENT -> nr_sectors -= nr_sectors;
+ CURRENT -> sector += nr_sectors;
+ CURRENT -> buffer += nr_sectors * 512;
+ } else {
+ azt_buf_out = -1;
+ break;
+ }
+ }
+ }
+}
+
+
+static void do_aztcd_request(void)
+{
+#ifdef AZT_TEST
+ printk(" do_aztcd_request(%ld+%ld)\n", CURRENT -> sector, CURRENT -> nr_sectors);
+#endif
+ azt_transfer_is_active = 1;
+ while (CURRENT_VALID) {
+ if (CURRENT->bh) {
+ if (!CURRENT->bh->b_lock)
+ panic(DEVICE_NAME ": block not locked");
+ }
+ azt_transfer();
+ if (CURRENT -> nr_sectors == 0) {
+ end_request(1);
+ } else {
+ azt_buf_out = -1; /* Want to read a block not in buffer */
+ if (azt_state == AZT_S_IDLE) {
+ if (!aztTocUpToDate) {
+ if (aztUpdateToc() < 0) {
+ while (CURRENT_VALID)
+ end_request(0);
+ break;
+ }
+ }
+ azt_state = AZT_S_START;
+ AztTries = 5;
+ SET_TIMER(azt_poll, 1);
+ }
+ break;
+ }
+ }
+ azt_transfer_is_active = 0;
+#ifdef AZT_TEST2
+ printk("azt_next_bn:%x azt_buf_in:%x azt_buf_out:%x azt_buf_bn:%x\n", \
+ azt_next_bn, azt_buf_in, azt_buf_out, azt_buf_bn[azt_buf_in]);
+ printk(" do_aztcd_request ends\n");
+#endif
+
+}
+
+static void azt_poll(void)
+{
+ int st = 0;
+ int loop_ctl = 1;
+ int skip = 0;
+
+ if (azt_error) { /* ???*/
+ if (aztSendCmd(ACMD_GET_ERROR)) return;
+ STEN_LOW;
+ azt_error=inb(DATA_PORT)&0xFF;
+ printk("aztcd: I/O error 0x%02x\n", azt_error);
+ azt_invalidate_buffers();
+#ifdef WARN_IF_READ_FAILURE
+ if (AztTries == 5)
+ printk("aztcd: read of block %d failed - maybe audio disk?\n", azt_next_bn);
+#endif
+ if (!AztTries--) {
+ printk("aztcd: read of block %d failed, maybe audio disk? Giving up\n", azt_next_bn);
+ if (azt_transfer_is_active) {
+ AztTries = 0;
+ loop_ctl = 0;
+ }
+ if (CURRENT_VALID)
+ end_request(0);
+ AztTries = 5;
+ }
+ azt_error = 0;
+ azt_state = AZT_S_STOP;
+ }
+
+ while (loop_ctl)
+ {
+ loop_ctl = 0; /* each case must flip this back to 1 if we want
+ to come back up here */
+ switch (azt_state) {
+
+ case AZT_S_IDLE:
+#ifdef AZT_TEST3
+ if (azt_state!=azt_state_old) {
+ azt_state_old=azt_state;
+ printk("AZT_S_IDLE\n");
+ }
+#endif
+ return;
+
+ case AZT_S_START:
+#ifdef AZT_TEST3
+ if (azt_state!=azt_state_old) {
+ azt_state_old=azt_state;
+ printk("AZT_S_START\n");
+ }
+#endif
+
+ if(aztSendCmd(ACMD_GET_STATUS)) return; /*result will be checked by aztStatus() */
+ azt_state = azt_mode == 1 ? AZT_S_READ : AZT_S_MODE;
+ AztTimeout = 3000;
+ break;
+
+ case AZT_S_MODE:
+#ifdef AZT_TEST3
+ if (azt_state!=azt_state_old) {
+ azt_state_old=azt_state;
+ printk("AZT_S_MODE\n");
+ }
+#endif
+ if (!skip) {
+ if ((st = aztStatus()) != -1) {
+ if (st & AST_DSK_CHG) {
+ aztDiskChanged = 1;
+ aztTocUpToDate = 0;
+ azt_invalidate_buffers();
+ }
+ } else break;
+ }
+ skip = 0;
+
+ if ((st & AST_DOOR_OPEN)||(st & AST_NOT_READY)) {
+ aztDiskChanged = 1;
+ aztTocUpToDate = 0;
+ printk((st & AST_DOOR_OPEN) ? "aztcd: door open\n" : "aztcd: disk removed\n");
+ if (azt_transfer_is_active) {
+ azt_state = AZT_S_START;
+ loop_ctl = 1; /* goto immediately */
+ break;
+ }
+ azt_state = AZT_S_IDLE;
+ while (CURRENT_VALID)
+ end_request(0);
+ return;
+ }
+ /*???*/
+ if (aztSendCmd(ACMD_SET_MODE)) return;
+ outb(0x01, DATA_PORT); /*Mode 1*/
+ PA_OK;
+ STEN_LOW;
+ if (aztSendCmd(ACMD_GET_STATUS)) return;
+ azt_mode = 1;
+ azt_state = AZT_S_READ;
+ AztTimeout = 3000;
+
+ break;
+
+
+ case AZT_S_READ:
+#ifdef AZT_TEST3
+ if (azt_state!=azt_state_old) {
+ azt_state_old=azt_state;
+ printk("AZT_S_READ\n");
+ }
+#endif
+ if (!skip) {
+ if ((st = aztStatus()) != -1) {
+ if (st & AST_DSK_CHG) {
+ aztDiskChanged = 1;
+ aztTocUpToDate = 0;
+ azt_invalidate_buffers();
+ }
+ } else break;
+ }
+
+ skip = 0;
+ if ((st & AST_DOOR_OPEN)||(st & AST_NOT_READY)) {
+ aztDiskChanged = 1;
+ aztTocUpToDate = 0;
+ printk((st & AST_DOOR_OPEN) ? "aztcd: door open\n" : "aztcd: disk removed\n");
+ if (azt_transfer_is_active) {
+ azt_state = AZT_S_START;
+ loop_ctl = 1;
+ break;
+ }
+ azt_state = AZT_S_IDLE;
+ while (CURRENT_VALID)
+ end_request(0);
+ return;
+ }
+
+ if (CURRENT_VALID) {
+ struct azt_Play_msf msf;
+ azt_next_bn = CURRENT -> sector / 4;
+ azt_hsg2msf(azt_next_bn, &msf.start);
+ azt_read_count=AZT_BUF_SIZ; /*??? fast, because we read ahead*/
+/* azt_read_count= CURRENT->nr_sectors; slow
+*/
+ msf.end.min = 0;
+ msf.end.sec = 0;
+ msf.end.frame = azt_read_count ;/*Mitsumi here reads 0xffffff sectors*/
+#ifdef AZT_TEST3
+ printk("---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("azt_next_bn:%x azt_buf_in:%x azt_buf_out:%x azt_buf_bn:%x\n", \
+ azt_next_bn, azt_buf_in, azt_buf_out, azt_buf_bn[azt_buf_in]);
+#endif
+ sendAztCmd(ACMD_DATA_READ, &msf);
+ azt_state = AZT_S_DATA;
+ AztTimeout = READ_TIMEOUT;
+ } else {
+ azt_state = AZT_S_STOP;
+ loop_ctl = 1;
+ break;
+ }
+
+ break;
+
+
+ case AZT_S_DATA:
+#ifdef AZT_TEST3
+ if (azt_state!=azt_state_old) {
+ azt_state_old=azt_state;
+ printk("AZT_S_DATA\n");
+ }
+#endif
+
+ st = inb(STATUS_PORT) & AFL_STATUSorDATA; /*???*/
+
+ switch (st) {
+
+ case AFL_DATA:
+#ifdef AZT_TEST3
+ if (st!=azt_st_old) {
+ azt_st_old=st;
+ printk("---AFL_DATA st:%x\n",st);
+ }
+#endif
+#ifdef WARN_IF_READ_FAILURE
+ if (AztTries == 5)
+ printk("aztcd: read of block %d failed - maybe audio disk?\n", azt_next_bn);
+#endif
+ if (!AztTries--) {
+ printk("aztcd: read of block %d failed, maybe audio disk ? Giving up\n", azt_next_bn);
+ if (azt_transfer_is_active) {
+ AztTries = 0;
+ break;
+ }
+ if (CURRENT_VALID)
+ end_request(0);
+ AztTries = 5;
+ }
+ azt_state = AZT_S_START;
+ AztTimeout = READ_TIMEOUT;
+ loop_ctl = 1;
+ break;
+
+ case AFL_STATUSorDATA:
+#ifdef AZT_TEST3
+ if (st!=azt_st_old) {
+ azt_st_old=st;
+ printk("---AFL_STATUSorDATA st:%x\n",st);
+ }
+#endif
+ break;
+
+ default:
+#ifdef AZT_TEST3
+ if (st!=azt_st_old) {
+ azt_st_old=st;
+ printk("---default: st:%x\n",st);
+ }
+#endif
+ AztTries = 5;
+ if (!CURRENT_VALID && azt_buf_in == azt_buf_out) {
+ azt_state = AZT_S_STOP;
+ loop_ctl = 1;
+ break;
+ }
+ if (azt_read_count<=0)
+ printk("aztcd: warning - try to read 0 frames\n");
+ while (azt_read_count) /*??? fast read ahead loop*/
+ { azt_buf_bn[azt_buf_in] = -1;
+ DTEN_LOW; /*??? unsolved problem, very
+ seldom we get timeouts
+ here, don't now the real
+ reason. With my drive this
+ sometimes also happens with
+ Aztech's original driver under
+ DOS. Is it a hardware bug?
+ I tried to recover from such
+ situations here. Zimmermann*/
+ if (aztTimeOutCount>=AZT_TIMEOUT)
+ { printk("read_count:%d CURRENT->nr_sectors:%ld azt_buf_in:%d\n", azt_read_count,CURRENT->nr_sectors,azt_buf_in);
+ printk("azt_transfer_is_active:%x\n",azt_transfer_is_active);
+ azt_read_count=0;
+ azt_state = AZT_S_STOP;
+ loop_ctl = 1;
+ end_request(1); /*should we have here (1) or (0)? */
+ }
+ else
+ { insb(DATA_PORT, azt_buf + 2048 * azt_buf_in, 2048);
+ azt_read_count--;
+#ifdef AZT_TEST3
+ printk("AZT_S_DATA; ---I've read data- read_count: %d\n",azt_read_count);
+ printk("azt_next_bn:%d azt_buf_in:%d azt_buf_out:%d azt_buf_bn:%d\n", \
+ azt_next_bn, azt_buf_in, azt_buf_out, azt_buf_bn[azt_buf_in]);
+#endif
+ azt_buf_bn[azt_buf_in] = azt_next_bn++;
+ if (azt_buf_out == -1)
+ azt_buf_out = azt_buf_in;
+ azt_buf_in = azt_buf_in + 1 == AZT_BUF_SIZ ? 0 : azt_buf_in + 1;
+ }
+ }
+ if (!azt_transfer_is_active) {
+ while (CURRENT_VALID) {
+ azt_transfer();
+ if (CURRENT -> nr_sectors == 0)
+ end_request(1);
+ else
+ break;
+ }
+ }
+
+ if (CURRENT_VALID
+ && (CURRENT -> sector / 4 < azt_next_bn ||
+ CURRENT -> sector / 4 > azt_next_bn + AZT_BUF_SIZ)) {
+ azt_state = AZT_S_STOP;
+ loop_ctl = 1;
+ break;
+ }
+ AztTimeout = READ_TIMEOUT;
+ if (azt_read_count==0) {
+ azt_state = AZT_S_STOP; /*???*/
+ loop_ctl = 1;
+ break;
+ }
+ break;
+ }
+ break;
+
+
+ case AZT_S_STOP:
+#ifdef AZT_TEST3
+ if (azt_state!=azt_state_old) {
+ azt_state_old=azt_state;
+ printk("AZT_S_STOP\n");
+ }
+#endif
+ if (azt_read_count!=0) printk("aztcd: discard data=%x frames\n",azt_read_count); /*???*/
+ while (azt_read_count!=0) {
+ int i;
+ if ( !(inb(STATUS_PORT) & AFL_DATA) ) {
+ for (i=0; i<2048; i++) {
+ inb(DATA_PORT);
+ }
+ }
+ azt_read_count--;
+ }
+ if (aztSendCmd(ACMD_GET_STATUS)) return;
+ azt_state = AZT_S_STOPPING;
+ AztTimeout = 1000;
+ break;
+
+ case AZT_S_STOPPING:
+#ifdef AZT_TEST3
+ if (azt_state!=azt_state_old) {
+ azt_state_old=azt_state;
+ printk("AZT_S_STOPPING\n");
+ }
+#endif
+
+ if ((st = aztStatus()) == -1 && AztTimeout)
+ break;
+
+ if ((st != -1) && (st & AST_DSK_CHG)) {
+ aztDiskChanged = 1;
+ aztTocUpToDate = 0;
+ azt_invalidate_buffers();
+ }
+
+
+#ifdef AZT_TEST3
+ printk("CURRENT_VALID %d azt_mode %d\n",
+ CURRENT_VALID, azt_mode);
+#endif
+
+ if (CURRENT_VALID) {
+ if (st != -1) {
+ if (azt_mode == 1) {
+ azt_state = AZT_S_READ;
+ loop_ctl = 1;
+ skip = 1;
+ break;
+ } else {
+ azt_state = AZT_S_MODE;
+ loop_ctl = 1;
+ skip = 1;
+ break;
+ }
+ } else {
+ azt_state = AZT_S_START;
+ AztTimeout = 1;
+ }
+ } else {
+ azt_state = AZT_S_IDLE;
+ return;
+ }
+ break;
+
+ default:
+ printk("aztcd: invalid state %d\n", azt_state);
+ return;
+ } /* case */
+ } /* while */
+
+
+ if (!AztTimeout--)
+ { printk("aztcd: timeout in state %d\n", azt_state);
+ azt_state = AZT_S_STOP;
+ if (aztSendCmd(ACMD_STOP)) return;
+ STEN_LOW_WAIT;
+ };
+
+ SET_TIMER(azt_poll, 1);
+}
+
+static void azt_invalidate_buffers(void)
+{ int i;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: executing azt_invalidate_buffers\n");
+#endif
+ for (i = 0; i < AZT_BUF_SIZ; ++i)
+ azt_buf_bn[i] = -1;
+ azt_buf_out = -1;
+}
+
+/*
+ * Open the device special file. Check that a disk is in.
+ */
+int aztcd_open(struct inode *ip, struct file *fp)
+{ int st;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztcd_open\n");
+#endif
+ if (aztPresent == 0)
+ return -ENXIO; /* no hardware */
+
+ if (!azt_open_count && azt_state == AZT_S_IDLE) {
+
+ azt_invalidate_buffers();
+
+ st = getAztStatus(); /* check drive status */
+ if (st == -1)
+ return -EIO; /* drive doesn't respond */
+
+ if (st&AST_DOOR_OPEN)
+ {
+ /* close door, then get the status again. */
+ aztCloseDoor();
+ st = getAztStatus();
+ }
+
+ if ((st&AST_DOOR_OPEN)||(st&AST_NOT_READY)) /* no disk in drive or door open*/
+ { /* Door should be closed, probably no disk in drive */
+ printk("aztcd: no disk in drive or door open\n");
+ return -EIO;
+ }
+
+ if (aztUpdateToc() < 0)
+ return -EIO;
+
+ }
+ ++azt_open_count;
+ MOD_INC_USE_COUNT;
+ aztLockDoor();
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztcd_open\n");
+#endif
+ return 0;
+}
+
+
+/*
+ * On close, we flush all azt blocks from the buffer cache.
+ */
+static void aztcd_release(struct inode * inode, struct file * file)
+{
+#ifdef AZT_DEBUG
+ printk("aztcd: executing aztcd_release\n");
+ printk("inode: %p, inode->i_rdev: %x file: %p\n",inode,inode->i_rdev,file);
+#endif
+ MOD_DEC_USE_COUNT;
+ if (!--azt_open_count) {
+ azt_invalidate_buffers();
+ sync_dev(inode->i_rdev); /*??? isn't it a read only dev?*/
+ invalidate_buffers(inode -> i_rdev);
+ aztUnlockDoor();
+ CLEAR_TIMER;
+ }
+ return;
+}
+
+
+static struct file_operations azt_fops = {
+ NULL, /* lseek - default */
+ block_read, /* read - general block-dev read */
+ block_write, /* write - general block-dev write */
+ NULL, /* readdir - bad */
+ NULL, /* select */
+ aztcd_ioctl, /* ioctl */
+ NULL, /* mmap */
+ aztcd_open, /* open */
+ aztcd_release, /* release */
+ NULL, /* fsync */
+ NULL, /* fasync*/
+ check_aztcd_media_change, /*media change*/
+ NULL /* revalidate*/
+};
+
+/*
+ * Test for presence of drive and initialize it. Called at boot time.
+ */
+#ifndef MODULE
+unsigned long aztcd_init(unsigned long mem_start, unsigned long mem_end)
+#else
+int init_module(void)
+#endif
+{ long int count, max_count;
+ unsigned char result[50];
+ int st;
+
+ if (azt_port <= 0) {
+ printk("aztcd: no Aztech CD-ROM Initialization");
+#ifndef MODULE
+ return (mem_start);
+#else
+ return -EIO;
+#endif
+ }
+ printk("Aztech CD-ROM Init: Aztech, Orchid, Okano, Wearnes CD-ROM Driver\n");
+ printk("Aztech CD-ROM Init: (C) 1994,1995 Werner Zimmermann\n");
+ printk("Aztech CD-ROM Init: DriverVersion=%s BaseAddress=0x%x \n",AZT_VERSION,azt_port);
+
+ if (check_region(azt_port, 4)) {
+ printk("aztcd: conflict, I/O port (%X) already used\n",
+ azt_port);
+#ifndef MODULE
+ return (mem_start);
+#else
+ return -EIO;
+#endif
+ }
+
+ /* check for card */
+ outb(POLLED,MODE_PORT); /*???*/
+ inb(CMD_PORT);
+ inb(CMD_PORT);
+ outb(ACMD_GET_VERSION,CMD_PORT); /*Try to get version info*/
+ STEN_LOW;
+ if (inb(DATA_PORT)!=AFL_OP_OK) /*OP_OK? If not, reset and try again*/
+ { printk("aztcd: drive reset - please wait\n");
+ for (count=0;count<50;count++)
+ { inb(STATUS_PORT); /*removing all data from earlier tries*/
+ inb(DATA_PORT);
+ }
+ outb(POLLED,MODE_PORT); /*???*/
+ inb(CMD_PORT);
+ inb(CMD_PORT);
+ outb(ACMD_SOFT_RESET,CMD_PORT); /*send reset*/
+ STEN_LOW;
+ if (inb(DATA_PORT)!=AFL_OP_OK) /*OP_OK?*/
+ { printk("aztcd: no AZTECH CD-ROM drive found\n");
+#ifndef MODULE
+ return (mem_start);
+#else
+ return -EIO;
+#endif
+ }
+ for (count = 0; count < AZT_TIMEOUT; count++); /* delay a bit */
+ if ((st=getAztStatus())==-1)
+ { printk("aztcd: Drive Status Error Status=%x\n",st);
+#ifndef MODULE
+ return (mem_start);
+#else
+ return -EIO;
+#endif
+ }
+#ifdef AZT_DEBUG
+ printk("aztcd: Status = %x\n",st);
+#endif
+ outb(POLLED,MODE_PORT); /*???*/
+ inb(CMD_PORT);
+ inb(CMD_PORT);
+ outb(ACMD_GET_VERSION,CMD_PORT); /*GetVersion*/
+ STEN_LOW;
+ OP_OK;
+ }
+ azt_init_end=1;
+ STEN_LOW;
+ result[0]=inb(DATA_PORT); /*reading in a null byte???*/
+ for (count=1;count<50;count++) /*Reading version string*/
+ { aztTimeOutCount=0; /*here we must implement STEN_LOW differently*/
+ do { aztIndatum=inb(STATUS_PORT);/*because we want to exit by timeout*/
+ aztTimeOutCount++;
+ if (aztTimeOutCount>=AZT_FAST_TIMEOUT) break;
+ } while (aztIndatum&AFL_STATUS);
+ if (aztTimeOutCount>=AZT_FAST_TIMEOUT) break; /*all chars read?*/
+ result[count]=inb(DATA_PORT);
+ }
+ if (count>30) max_count=30; /*print max.30 chars of the version string*/
+ else max_count=count;
+ printk("Aztech CD-ROM Init: FirmwareVersion=");
+ for (count=1;count<max_count;count++) printk("%c",result[count]);
+ printk("<<<\n");
+
+ if ((result[1]=='A')&&(result[2]=='Z')&&(result[3]=='T'))
+ { printk("Aztech CD-ROM Init: AZTECH drive detected\n"); /*AZTECH*/
+ }
+ else if ((result[2]=='C')&&(result[3]=='D')&&(result[4]=='D'))
+ { printk("Aztech CD-ROM Init: ORCHID or WEARNES drive detected\n"); /*ORCHID or WEARNES*/
+ }
+ else /*OTHERS or none*/
+ { printk("Aztech CD-ROM Init: : unknown drive or firmware version detected\n");
+ printk(" azt may not run stable, if you want to try anyhow,\n");
+ printk(" boot with: aztcd=base_address,0x79\n");
+ if ((azt_cont!=0x79))
+ { printk("Aztech CD-ROM Init: FirmwareVersion=");
+ for (count=1;count<5;count++) printk("%c",result[count]);
+ printk("\n");
+ printk("Aztech CD-ROM Init: Aborted\n");
+#ifndef MODULE
+ return (mem_start);
+#else
+ return -EIO;
+#endif
+ }
+ }
+ if (register_blkdev(MAJOR_NR, "aztcd", &azt_fops) != 0)
+ {
+ printk("aztcd: Unable to get major %d for Aztech CD-ROM\n",
+ MAJOR_NR);
+#ifndef MODULE
+ return (mem_start);
+#else
+ return -EIO;
+#endif
+ }
+ blk_dev[MAJOR_NR].request_fn = DEVICE_REQUEST;
+ read_ahead[MAJOR_NR] = 4;
+
+ request_region(azt_port, 4, "aztcd");
+
+ azt_invalidate_buffers();
+ aztPresent = 1;
+ aztCloseDoor();
+ printk("Aztech CD-ROM Init: End\n");
+#ifndef MODULE
+ return (mem_start);
+#else
+ return (0);
+#endif
+}
+
+
+static void azt_hsg2msf(long hsg, struct msf *msf)
+{ hsg += 150;
+ msf -> min = hsg / 4500;
+ hsg %= 4500;
+ msf -> sec = hsg / 75;
+ msf -> frame = hsg % 75;
+#ifdef AZT_DEBUG
+ if (msf->min >=70) printk("aztcd: Error hsg2msf address Minutes\n");
+ if (msf->sec >=60) printk("aztcd: Error hsg2msf address Seconds\n");
+ if (msf->frame>=75) printk("aztcd: Error hsg2msf address Frames\n");
+#endif
+ azt_bin2bcd(&msf -> min); /* convert to BCD */
+ azt_bin2bcd(&msf -> sec);
+ azt_bin2bcd(&msf -> frame);
+}
+
+
+static void azt_bin2bcd(unsigned char *p)
+{ int u, t;
+
+ u = *p % 10;
+ t = *p / 10;
+ *p = u | (t << 4);
+}
+
+static int azt_bcd2bin(unsigned char bcd)
+{ return (bcd >> 4) * 10 + (bcd & 0xF);
+}
+
+
+
+/*
+ * 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.
+ */
+int aztGetQChannelInfo(struct azt_Toc *qp)
+{ unsigned char notUsed;
+ int st;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztGetQChannelInfo\n");
+#endif
+ if ((st=getAztStatus())==-1) return -1;
+ if (aztSendCmd(ACMD_GET_Q_CHANNEL)) return -1;
+ STEN_LOW_WAIT;
+ if (aztGetValue(&notUsed) <0) return -1; /*Nullbyte ein-*/
+ /*lesen ???*/
+ 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) return -1;
+ if (aztGetValue(&qp -> track) < 0) return -1;
+ if (aztGetValue(&qp -> pointIndex) < 0) return -1;
+ if (aztGetValue(&qp -> trackTime.min) < 0) return -1;
+ if (aztGetValue(&qp -> trackTime.sec) < 0) return -1;
+ if (aztGetValue(&qp -> trackTime.frame) < 0) return -1;
+ if (aztGetValue(&notUsed) < 0) return -1;
+ if (aztGetValue(&qp -> diskTime.min) < 0) return -1;
+ if (aztGetValue(&qp -> diskTime.sec) < 0) return -1;
+ if (aztGetValue(&qp -> diskTime.frame) < 0) return -1;
+ }
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztGetQChannelInfo\n");
+#endif
+ return 0;
+}
+
+/*
+ * Read the table of contents (TOC) and TOC header if necessary
+ */
+static int aztUpdateToc()
+{
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztUpdateToc\n");
+#endif
+ if (aztTocUpToDate)
+ return 0;
+
+ if (aztGetDiskInfo() < 0)
+ return -EIO;
+
+ if (aztGetToc() < 0)
+ return -EIO;
+
+ aztTocUpToDate = 1;
+#ifdef AZT_DEBUG
+ printk("aztcd: exiting aztUpdateToc\n");
+#endif
+ return 0;
+}
+
+
+/*
+ * Read the table of contents header
+ */
+static int aztGetDiskInfo()
+{ int limit;
+ unsigned char test;
+ struct azt_Toc qInfo;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztGetDiskInfo\n");
+#endif
+ if (aztSendCmd(ACMD_SEEK_TO_LEADIN)) return -1;
+ STEN_LOW_WAIT;
+ test=0;
+ for (limit=300;limit>0;limit--)
+ { if (aztGetQChannelInfo(&qInfo)<0) return -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-2;
+ 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\n");
+printk("Disk Info: first %d last %d length %02x:%02x.%02x first %02x:%02x.%02x\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;
+}
+
+
+/*
+ * Read the table of contents (TOC)
+ */
+static int aztGetToc()
+{ int i, px;
+ int limit;
+ struct azt_Toc qInfo;
+
+#ifdef AZT_DEBUG
+ printk("aztcd: starting aztGetToc\n");
+#endif
+ for (i = 0; i < MAX_TRACKS; i++)
+ Toc[i].pointIndex = 0;
+
+ i = DiskInfo.last + 3;
+
+/* Is there a good reason to stop motor before TOC read?
+ if (aztSendCmd(ACMD_STOP)) return -1;
+ STEN_LOW_WAIT;
+*/
+
+ azt_mode = 0x05;
+ if (aztSendCmd(ACMD_SEEK_TO_LEADIN)) return -1; /*???*/
+ STEN_LOW_WAIT;
+
+ for (limit = 300; limit > 0; limit--)
+ {
+ 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;
+
+#ifdef AZT_DEBUG
+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 %02X:%02X.%02X\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 %02X:%02X.%02X\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);
+#endif
+
+ return limit > 0 ? 0 : -1;
+}
+
+#ifdef MODULE
+void cleanup_module(void)
+{ if (MOD_IN_USE)
+ { printk("aztcd module in use - can't remove it.\n");
+ return;
+ }
+ if ((unregister_blkdev(MAJOR_NR, "aztcd") == -EINVAL))
+ { printk("What's that: can't unregister aztcd\n");
+ return;
+ }
+ release_region(azt_port,4);
+ printk("aztcd module released.\n");
+}
+#endif MODULE
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