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#define AZT_VERSION "2.50" /* $Id: aztcd.c,v 1.1 2005-12-20 10:16:38 jcastillo Exp $ linux/drivers/block/aztcd.c - Aztech CD268 CDROM driver Copyright (C) 1994,95,96 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 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 /usr/src/linux/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 */ #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 <asm/system.h> #include <asm/io.h> #include <asm/segment.h> #define MAJOR_NR AZTECH_CDROM_MAJOR #include <linux/blk.h> #include <linux/aztcd.h> /*########################################################################### Defines ########################################################################### */ #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 #define CURRENT_VALID \ (CURRENT && MAJOR(CURRENT -> rq_dev) == MAJOR_NR && 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; static char azt_cont = 0; static char azt_init_end = 0; static char azt_auto_eject = AZT_AUTO_EJECT; 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 unsigned char aztIndatum; static unsigned long aztTimeOutCount; static int aztCmd = 0; /*########################################################################### Function Prototypes ########################################################################### */ /* CDROM Drive Low Level I/O Functions */ void op_ok(void); void pa_ok(void); void sten_low(void); void dten_low(void); void statusAzt(void); static void aztStatTimer(void); /* CDROM Drive Command Functions */ static int aztSendCmd(int cmd); static int sendAztCmd(int cmd, struct azt_Play_msf *params); static int aztSeek(struct azt_Play_msf *params); static int aztSetDiskType(int type); static int aztStatus(void); static int getAztStatus(void); static int aztPlay(struct azt_Play_msf *arg); static void aztCloseDoor(void); static void aztLockDoor(void); static void aztUnlockDoor(void); static int aztGetValue(unsigned char *result); static int aztGetQChannelInfo(struct azt_Toc *qp); static int aztUpdateToc(void); static int aztGetDiskInfo(void); #if AZT_MULTISESSION static int aztGetMultiDiskInfo(void); #endif static int aztGetToc(int multi); /* Kernel Interface Functions */ void aztcd_setup(char *str, int *ints); static int check_aztcd_media_change(kdev_t full_dev); static int aztcd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); static void azt_transfer(void); static void do_aztcd_request(void); static void azt_invalidate_buffers(void); int aztcd_open(struct inode *ip, struct file *fp); static void aztcd_release(struct inode * inode, struct file * file); int aztcd_init(void); #ifdef MODULE int init_module(void); void cleanup_module(void); #endif MODULE 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*/ }; /* 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() 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 commands:%x\n",aztCmd); 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, 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. */ 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(¬Used)) 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(¬Used) < 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() { 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 zimmerma@rz.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() { 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", 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; } /*########################################################################## Kernel Interface Functions ########################################################################## */ void aztcd_setup(char *str, int *ints) { if (ints[0] > 0) azt_port = ints[1]; if (ints[0] > 1) azt_cont = ints[2]; } /* * Checking if the media has been changed */ static int check_aztcd_media_change(kdev_t full_dev) { if (aztDiskChanged) /* disk changed */ { aztDiskChanged=0; return 1; } else return 0; /* no change */ } /* * Kernel IO-controls */ 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 Time: %li\n",cmd, jiffies); printk("aztcd Status %x\n", getAztStatus()); #endif if (!ip) RETURNM("aztcd_ioctl 1",-EINVAL); if (getAztStatus()<0) RETURNM("aztcd_ioctl 2", -EIO); if ((!aztTocUpToDate)||(aztDiskChanged)) { if ((i=aztUpdateToc())<0) RETURNM("aztcd_ioctl 3", i); /* error reading TOC */ } switch (cmd) { case CDROMSTART: /* Spin up the drive. Don't know, what to do, at least close the tray */ #if AZT_PRIVATE_IOCTLS if (aztSendCmd(ACMD_CLOSE)) RETURNM("aztcd_ioctl 4",-1); STEN_LOW_WAIT; #endif break; case CDROMSTOP: /* Spin down the drive */ if (aztSendCmd(ACMD_STOP)) RETURNM("aztcd_ioctl 5",-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; RETURNM("aztcd_ioctl 7",0); } azt_Play.start = qInfo.diskTime; /* remember restart point */ if (aztSendCmd(ACMD_PAUSE)) RETURNM("aztcd_ioctl 8",-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 CDROMMULTISESSION: /*multisession support -- experimental*/ { struct cdrom_multisession ms; #ifdef AZT_DEBUG printk("aztcd ioctl MULTISESSION\n"); #endif st = verify_area(VERIFY_WRITE, (void*) arg, sizeof(struct cdrom_multisession)); if (st) return st; memcpy_fromfs(&ms, (void*) arg, sizeof(struct cdrom_multisession)); if (ms.addr_format == CDROM_MSF) { ms.addr.msf.minute = azt_bcd2bin(DiskInfo.lastSession.min); ms.addr.msf.second = azt_bcd2bin(DiskInfo.lastSession.sec); ms.addr.msf.frame = azt_bcd2bin(DiskInfo.lastSession.frame); } else if (ms.addr_format == CDROM_LBA) ms.addr.lba = azt_msf2hsg(&DiskInfo.lastSession); else return -EINVAL; ms.xa_flag = DiskInfo.xa; memcpy_tofs((void*) arg, &ms, sizeof(struct cdrom_multisession)); #ifdef AZT_DEBUG if (ms.addr_format == CDROM_MSF) printk("aztcd multisession xa:%d, msf:%02x:%02x.%02x [%02x:%02x.%02x])\n", ms.xa_flag, ms.addr.msf.minute, ms.addr.msf.second, ms.addr.msf.frame, DiskInfo.lastSession.min, DiskInfo.lastSession.sec, DiskInfo.lastSession.frame); else printk("aztcd multisession %d, lba:0x%08x [%02x:%02x.%02x])\n", ms.xa_flag, ms.addr.lba, DiskInfo.lastSession.min, DiskInfo.lastSession.sec, DiskInfo.lastSession.frame); #endif return 0; } 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)) RETURNM("aztcd_ioctl 9",-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_WRITE, (void *) arg, sizeof entry); if (st) return st; memcpy_fromfs(&entry, (void *) arg, sizeof entry); if ((!aztTocUpToDate)||aztDiskChanged) aztUpdateToc(); 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_WRITE, (void *) arg, sizeof(struct cdrom_subchnl)); if (st) { #ifdef AZT_DEBUG printk("aztcd: exiting aztcd_ioctl - Error 1 - Command:%x\n",cmd); #endif return st; } memcpy_fromfs(&subchnl, (void *) arg, sizeof (struct cdrom_subchnl)); if (aztGetQChannelInfo(&qInfo) < 0) if (st) { #ifdef AZT_DEBUG printk("aztcd: exiting aztcd_ioctl - Error 3 - Command:%x\n",cmd); #endif 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 /*default*/ { 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); } memcpy_tofs((void *) arg, &subchnl, sizeof (struct cdrom_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)) RETURNM("azt_ioctl 10",-1); STEN_LOW_WAIT; } if (aztSendCmd(ACMD_EJECT)) RETURNM("azt_ioctl 11",-1); STEN_LOW_WAIT; aztAudioStatus = CDROM_AUDIO_NO_STATUS; break; case CDROMEJECT_SW: azt_auto_eject = (char) arg; break; case CDROMRESET: outb(ACMD_SOFT_RESET,CMD_PORT); /*send reset*/ STEN_LOW; if (inb(DATA_PORT)!=AFL_OP_OK) /*OP_OK?*/ { printk("aztcd: AZTECH CD-ROM drive does not respond\n"); } break; /*Take care, the following code is not compatible with other CD-ROM drivers, use it at your own risk with cdplay.c. Set AZT_PRIVATE_IOCTLS to 0 in aztcd.h, if you do not want to use it! */ #if AZT_PRIVATE_IOCTLS case CDROMREADCOOKED: /*read data in mode 1 (2048 Bytes)*/ case CDROMREADRAW: /*read data in mode 2 (2336 Bytes)*/ { 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==CDROMREADRAW) { if (DiskInfo.xa) { return -1; /*XA Disks can't be read raw*/ } else { if (sendAztCmd(ACMD_PLAY_READ_RAW, &azt_Play)) return -1; DTEN_LOW; insb(DATA_PORT,buf,CD_FRAMESIZE_RAW); memcpy_tofs((void *) arg, &buf, CD_FRAMESIZE_RAW); } } else /*CDROMREADCOOKED*/ { if (sendAztCmd(ACMD_PLAY_READ, &azt_Play)) return -1; DTEN_LOW; insb(DATA_PORT,buf,CD_FRAMESIZE); memcpy_tofs((void *) arg, &buf, CD_FRAMESIZE); } } break; case CDROMSEEK: /*seek msf address*/ 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_Play.start.min = msf.cdmsf_min0; azt_Play.start.sec = msf.cdmsf_sec0; azt_Play.start.frame = msf.cdmsf_frame0; if (aztSeek(&azt_Play)) return -1; break; #endif /*end of incompatible code*/ case CDROMREADMODE1: /*set read data in mode 1*/ return aztSetDiskType(AZT_MODE_1); case CDROMREADMODE2: /*set read data in mode 2*/ return aztSetDiskType(AZT_MODE_2); default: return -EINVAL; } #ifdef AZT_DEBUG printk("aztcd: exiting aztcd_ioctl Command:%x Time:%li\n",cmd,jiffies); #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 Time:%li\n",jiffies); #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) Time:%li\n", CURRENT -> sector, CURRENT -> nr_sectors,jiffies); #endif if (DiskInfo.audio) { printk("aztcd: Error, tried to mount an Audio CD\n"); end_request(0); return; } azt_transfer_is_active = 1; while (CURRENT_VALID) { if (CURRENT->bh) { if (!buffer_locked(CURRENT->bh)) 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)||aztDiskChanged) { if (aztUpdateToc() < 0) { while (CURRENT_VALID) end_request(0); break; } } azt_state = AZT_S_START; AztTries = 5; SET_TIMER(azt_poll, HZ/100); } 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 Time:%li\n",jiffies); #endif } 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. */ printk("aztcd: Door Open?\n"); aztCloseDoor(); st = getAztStatus(); } if ((st & AST_NOT_READY) || (st & AST_DSK_CHG)) /*no disk in drive or changed*/ { printk("aztcd: Disk Changed or No Disk in Drive?\n"); aztTocUpToDate=0; } if (aztUpdateToc()) 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(); if (azt_auto_eject) aztSendCmd(ACMD_EJECT); CLEAR_TIMER; } return; } /* * Test for presence of drive and initialize it. Called at boot time. */ int aztcd_init(void) { long int count, max_count; unsigned char result[50]; int st; if (azt_port <= 0) { printk("aztcd: no Aztech CD-ROM Initialization"); return -EIO; } printk("aztcd: AZTECH, ORCHID, OKANO, WEARNES, TXC, CyDROM CD-ROM Driver\n"); printk("aztcd: (C) 1994-96 W.Zimmermann\n"); printk("aztcd: DriverVersion=%s BaseAddress=0x%x For IDE/ATAPI-drives use ide-cd.c\n",AZT_VERSION,azt_port); printk("aztcd: If you have problems, read /usr/src/linux/Documentation/cdrom/aztcd\n"); if ((azt_port==0x1f0)||(azt_port==0x170)) st = check_region(azt_port, 8); /*IDE-interfaces need 8 bytes*/ else st = check_region(azt_port, 4); /*proprietary interfaces need 4 bytes*/ if (st) { printk("aztcd: conflict, I/O port (%X) already used\n",azt_port); return -EIO; } #ifdef AZT_SW32 /*CDROM connected to Soundwave32 card*/ if ((0xFF00 & inw(AZT_SW32_ID_REG)) != 0x4500) { printk("aztcd: no Soundwave32 card detected at base:%x init:%x config:%x id:%x\n", AZT_SW32_BASE_ADDR,AZT_SW32_INIT,AZT_SW32_CONFIG_REG,AZT_SW32_ID_REG); return -EIO; } else { printk(KERN_INFO "aztcd: Soundwave32 card detected at %x Version %x\n", AZT_SW32_BASE_ADDR, inw(AZT_SW32_ID_REG)); outw(AZT_SW32_INIT,AZT_SW32_CONFIG_REG); for (count=0;count<10000;count++); /*delay a bit*/ } #endif /* check for presence of drive */ if ((azt_port==0x1f0)||(azt_port==0x170)) SWITCH_IDE_SLAVE; /*switch IDE interface to slave configuration*/ outb(POLLED,MODE_PORT); inb(CMD_PORT); inb(CMD_PORT); outb(ACMD_GET_VERSION,CMD_PORT); /*Try to get version info*/ /* STEN_LOW - special implementation for drive recognition */ aztTimeOutCount=0; do { aztIndatum=inb(STATUS_PORT); aztTimeOutCount++; if (aztTimeOutCount>=AZT_FAST_TIMEOUT) break; } while (aztIndatum&AFL_STATUS); if (inb(DATA_PORT)!=AFL_OP_OK) /*OP_OK? If not, reset and try again*/ { #ifndef MODULE if (azt_cont!=0x79) { printk("aztcd: no AZTECH CD-ROM drive found-Try boot parameter aztcd=<BaseAddress>,0x79\n"); return -EIO; } #else if (0) { } #endif else { 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); getAztStatus(); /*trap errors*/ 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"); return -EIO; } for (count = 0; count < AZT_TIMEOUT; count++); { count=count*2; /* delay a bit */ count=count/2; } if ((st=getAztStatus())==-1) { printk("aztcd: Drive Status Error Status=%x\n",st); return -EIO; } #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(KERN_INFO "aztcd: FirmwareVersion="); for (count=1;count<max_count;count++) printk("%c",result[count]); printk("<<>> "); if ((result[1]=='A')&&(result[2]=='Z')&&(result[3]=='T')) { printk("AZTECH drive detected\n"); /*AZTECH*/ } else if ((result[2]=='C')&&(result[3]=='D')&&(result[4]=='D')) { printk("ORCHID or WEARNES drive detected\n"); /*ORCHID or WEARNES*/ } else if ((result[1]==0x03)&&(result[2]=='5')) { printk("TXC or CyCDROM drive detected\n"); /*Conrad TXC, CyCDROM*/ } else /*OTHERS or none*/ { printk("\nunknown drive or firmware version detected\n"); printk("aztcd may not run stable, if you want to try anyhow,\n"); printk("boot with: aztcd=<BaseAddress>,0x79\n"); if ((azt_cont!=0x79)) { printk("aztcd: FirmwareVersion="); for (count=1;count<5;count++) printk("%c",result[count]); printk("<<>> "); printk("Aborted\n"); return -EIO; } } if (register_blkdev(MAJOR_NR, "aztcd", &azt_fops) != 0) { printk("aztcd: Unable to get major %d for Aztech CD-ROM\n", MAJOR_NR); return -EIO; } blk_dev[MAJOR_NR].request_fn = DEVICE_REQUEST; read_ahead[MAJOR_NR] = 4; if ((azt_port==0x1f0)||(azt_port==0x170)) request_region(azt_port, 8, "aztcd"); /*IDE-interface*/ else request_region(azt_port, 4, "aztcd"); /*proprietary interface*/ azt_invalidate_buffers(); aztPresent = 1; aztCloseDoor(); /* printk("aztcd: End Init\n"); */ return (0); } #ifdef MODULE int init_module(void) { return aztcd_init(); } void cleanup_module(void) { if ((unregister_blkdev(MAJOR_NR, "aztcd") == -EINVAL)) { printk("What's that: can't unregister aztcd\n"); return; } if ((azt_port==0x1f0)||(azt_port==0x170)) { SWITCH_IDE_MASTER; release_region(azt_port,8); /*IDE-interface*/ } else release_region(azt_port,4); /*proprietary interface*/ printk(KERN_INFO "aztcd module released.\n"); } #endif MODULE /*########################################################################## Aztcd State Machine: Controls Drive Operating State ########################################################################## */ static void azt_poll(void) { int st = 0; int loop_ctl = 1; int skip = 0; if (azt_error) { if (aztSendCmd(ACMD_GET_ERROR)) RETURN("azt_poll 1"); 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("azt_poll 2"); /*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)||(st & AST_NOT_READY)) { aztDiskChanged = 1; aztTocUpToDate = 0; azt_invalidate_buffers(); end_request(0); printk("aztcd: Disk Changed or Not Ready 1 - Unmount Disk!\n"); } } else break; } skip = 0; if ((st & AST_DOOR_OPEN)||(st & AST_NOT_READY)) { aztDiskChanged = 1; aztTocUpToDate = 0; printk("aztcd: Disk Changed or Not Ready 2 - Unmount Disk!\n"); end_request(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("azt_poll 3"); outb(0x01, DATA_PORT); PA_OK; STEN_LOW; */ if (aztSendCmd(ACMD_GET_STATUS)) RETURN("azt_poll 4"); STEN_LOW; 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)||(st & AST_NOT_READY)) { aztDiskChanged = 1; aztTocUpToDate = 0; azt_invalidate_buffers(); printk("aztcd: Disk Changed or Not Ready 3 - Unmount Disk!\n"); end_request(0); } } 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; int i; azt_next_bn = CURRENT -> sector / 4; azt_hsg2msf(azt_next_bn, &msf.start); i = 0; /* find out in which track we are */ while (azt_msf2hsg(&msf.start)>azt_msf2hsg(&Toc[++i].trackTime)) {}; if (azt_msf2hsg(&msf.start)<azt_msf2hsg(&Toc[i].trackTime)-AZT_BUF_SIZ) { azt_read_count=AZT_BUF_SIZ; /*fast, because we read ahead*/ /*azt_read_count=CURRENT->nr_sectors; slow, no read ahead*/ } else /* don't read beyond end of track */ #if AZT_MULTISESSION { azt_read_count=(azt_msf2hsg(&Toc[i].trackTime)/4)*4-azt_msf2hsg(&msf.start); if (azt_read_count < 0) azt_read_count=0; if (azt_read_count > AZT_BUF_SIZ) azt_read_count=AZT_BUF_SIZ; printk("aztcd: warning - trying to read beyond end of track\n"); /* printk("%i %i %li %li\n",i,azt_read_count,azt_msf2hsg(&msf.start),azt_msf2hsg(&Toc[i].trackTime)); */ } #else { azt_read_count=AZT_BUF_SIZ; } #endif 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 if (azt_read_mode==AZT_MODE_2) { sendAztCmd(ACMD_PLAY_READ_RAW, &msf); /*XA disks in raw mode*/ } else { sendAztCmd(ACMD_PLAY_READ, &msf); /*others in cooked mode*/ } 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 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 { if (azt_read_mode==AZT_MODE_2) { insb(DATA_PORT, azt_buf + CD_FRAMESIZE_RAW * azt_buf_in, CD_FRAMESIZE_RAW); } else { insb(DATA_PORT, azt_buf + CD_FRAMESIZE * azt_buf_in, CD_FRAMESIZE); } 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) ) { if (azt_read_mode==AZT_MODE_2) for (i=0; i<CD_FRAMESIZE_RAW; i++) inb(DATA_PORT); else for (i=0; i<CD_FRAMESIZE; i++) inb(DATA_PORT); } azt_read_count--; } if (aztSendCmd(ACMD_GET_STATUS)) RETURN("azt_poll 5"); 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)||(st & AST_NOT_READY))) { aztDiskChanged = 1; aztTocUpToDate = 0; azt_invalidate_buffers(); printk("aztcd: Disk Changed or Not Ready 4 - Unmount Disk!\n"); end_request(0); } #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("azt_poll 6"); STEN_LOW_WAIT; }; SET_TIMER(azt_poll, HZ/100); } /*########################################################################### * Miscellaneous support functions ########################################################################### */ 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 long azt_msf2hsg(struct msf *mp) { return azt_bcd2bin(mp -> frame) + azt_bcd2bin(mp -> sec) * 75 + azt_bcd2bin(mp -> min) * 4500 - CD_BLOCK_OFFSET; } 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); }