Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #define AZT_VERSION "2.60" |
| 2 | |
| 3 | /* $Id: aztcd.c,v 2.60 1997/11/29 09:51:19 root Exp root $ |
| 4 | linux/drivers/block/aztcd.c - Aztech CD268 CDROM driver |
| 5 | |
| 6 | Copyright (C) 1994-98 Werner Zimmermann(Werner.Zimmermann@fht-esslingen.de) |
| 7 | |
| 8 | based on Mitsumi CDROM driver by Martin Hariss and preworks by |
| 9 | Eberhard Moenkeberg; contains contributions by Joe Nardone and Robby |
| 10 | Schirmer. |
| 11 | |
| 12 | This program is free software; you can redistribute it and/or modify |
| 13 | it under the terms of the GNU General Public License as published by |
| 14 | the Free Software Foundation; either version 2, or (at your option) |
| 15 | any later version. |
| 16 | |
| 17 | This program is distributed in the hope that it will be useful, |
| 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | GNU General Public License for more details. |
| 21 | |
| 22 | You should have received a copy of the GNU General Public License |
| 23 | along with this program; if not, write to the Free Software |
| 24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | |
| 26 | HISTORY |
| 27 | V0.0 Adaption to Aztech CD268-01A Version 1.3 |
| 28 | Version is PRE_ALPHA, unresolved points: |
| 29 | 1. I use busy wait instead of timer wait in STEN_LOW,DTEN_LOW |
| 30 | thus driver causes CPU overhead and is very slow |
| 31 | 2. could not find a way to stop the drive, when it is |
| 32 | in data read mode, therefore I had to set |
| 33 | msf.end.min/sec/frame to 0:0:1 (in azt_poll); so only one |
| 34 | frame can be read in sequence, this is also the reason for |
| 35 | 3. getting 'timeout in state 4' messages, but nevertheless |
| 36 | it works |
| 37 | W.Zimmermann, Oct. 31, 1994 |
| 38 | V0.1 Version is ALPHA, problems #2 and #3 resolved. |
| 39 | W.Zimmermann, Nov. 3, 1994 |
| 40 | V0.2 Modification to some comments, debugging aids for partial test |
| 41 | with Borland C under DOS eliminated. Timer interrupt wait |
| 42 | STEN_LOW_WAIT additionally to busy wait for STEN_LOW implemented; |
| 43 | use it only for the 'slow' commands (ACMD_GET_Q_CHANNEL, ACMD_ |
| 44 | SEEK_TO_LEAD_IN), all other commands are so 'fast', that busy |
| 45 | waiting seems better to me than interrupt rescheduling. |
| 46 | Besides that, when used in the wrong place, STEN_LOW_WAIT causes |
| 47 | kernel panic. |
| 48 | In function aztPlay command ACMD_PLAY_AUDIO added, should make |
| 49 | audio functions work. The Aztech drive needs different commands |
| 50 | to read data tracks and play audio tracks. |
| 51 | W.Zimmermann, Nov. 8, 1994 |
| 52 | V0.3 Recognition of missing drive during boot up improved (speeded up). |
| 53 | W.Zimmermann, Nov. 13, 1994 |
| 54 | V0.35 Rewrote the control mechanism in azt_poll (formerly mcd_poll) |
| 55 | including removal of all 'goto' commands. :-); |
| 56 | J. Nardone, Nov. 14, 1994 |
| 57 | V0.4 Renamed variables and constants to 'azt' instead of 'mcd'; had |
| 58 | to make some "compatibility" defines in azt.h; please note, |
| 59 | that the source file was renamed to azt.c, the include file to |
| 60 | azt.h |
| 61 | Speeded up drive recognition during init (will be a little bit |
| 62 | slower than before if no drive is installed!); suggested by |
| 63 | Robby Schirmer. |
| 64 | read_count declared volatile and set to AZT_BUF_SIZ to make |
| 65 | drive faster (now 300kB/sec, was 60kB/sec before, measured |
| 66 | by 'time dd if=/dev/cdrom of=/dev/null bs=2048 count=4096'; |
| 67 | different AZT_BUF_SIZes were test, above 16 no further im- |
| 68 | provement seems to be possible; suggested by E.Moenkeberg. |
| 69 | W.Zimmermann, Nov. 18, 1994 |
| 70 | V0.42 Included getAztStatus command in GetQChannelInfo() to allow |
| 71 | reading Q-channel info on audio disks, if drive is stopped, |
| 72 | and some other bug fixes in the audio stuff, suggested by |
| 73 | Robby Schirmer. |
| 74 | Added more ioctls (reading data in mode 1 and mode 2). |
| 75 | Completely removed the old azt_poll() routine. |
| 76 | Detection of ORCHID CDS-3110 in aztcd_init implemented. |
| 77 | Additional debugging aids (see the readme file). |
| 78 | W.Zimmermann, Dec. 9, 1994 |
| 79 | V0.50 Autodetection of drives implemented. |
| 80 | W.Zimmermann, Dec. 12, 1994 |
| 81 | V0.52 Prepared for including in the standard kernel, renamed most |
| 82 | variables to contain 'azt', included autoconf.h |
| 83 | W.Zimmermann, Dec. 16, 1994 |
| 84 | V0.6 Version for being included in the standard Linux kernel. |
| 85 | Renamed source and header file to aztcd.c and aztcd.h |
| 86 | W.Zimmermann, Dec. 24, 1994 |
| 87 | V0.7 Changed VERIFY_READ to VERIFY_WRITE in aztcd_ioctl, case |
| 88 | CDROMREADMODE1 and CDROMREADMODE2; bug fix in the ioctl, |
| 89 | which causes kernel crashes when playing audio, changed |
| 90 | include-files (config.h instead of autoconf.h, removed |
| 91 | delay.h) |
| 92 | W.Zimmermann, Jan. 8, 1995 |
| 93 | V0.72 Some more modifications for adaption to the standard kernel. |
| 94 | W.Zimmermann, Jan. 16, 1995 |
| 95 | V0.80 aztcd is now part of the standard kernel since version 1.1.83. |
| 96 | Modified the SET_TIMER and CLEAR_TIMER macros to comply with |
| 97 | the new timer scheme. |
| 98 | W.Zimmermann, Jan. 21, 1995 |
| 99 | V0.90 Included CDROMVOLCTRL, but with my Aztech drive I can only turn |
| 100 | the channels on and off. If it works better with your drive, |
| 101 | please mail me. Also implemented ACMD_CLOSE for CDROMSTART. |
| 102 | W.Zimmermann, Jan. 24, 1995 |
| 103 | V1.00 Implemented close and lock tray commands. Patches supplied by |
| 104 | Frank Racis |
| 105 | Added support for loadable MODULEs, so aztcd can now also be |
| 106 | loaded by insmod and removed by rmmod during run time |
| 107 | Werner Zimmermann, Mar. 24, 95 |
| 108 | V1.10 Implemented soundcard configuration for Orchid CDS-3110 drives |
| 109 | connected to Soundwave32 cards. Release for LST 2.1. |
| 110 | (still experimental) |
| 111 | Werner Zimmermann, May 8, 95 |
| 112 | V1.20 Implemented limited support for DOSEMU0.60's cdrom.c. Now it works, but |
| 113 | sometimes DOSEMU may hang for 30 seconds or so. A fully functional ver- |
| 114 | sion needs an update of Dosemu0.60's cdrom.c, which will come with the |
| 115 | next revision of Dosemu. |
| 116 | Also Soundwave32 support now works. |
| 117 | Werner Zimmermann, May 22, 95 |
| 118 | V1.30 Auto-eject feature. Inspired by Franc Racis (racis@psu.edu) |
| 119 | Werner Zimmermann, July 4, 95 |
| 120 | V1.40 Started multisession support. Implementation copied from mcdx.c |
| 121 | by Heiko Schlittermann. Not tested yet. |
| 122 | Werner Zimmermann, July 15, 95 |
| 123 | V1.50 Implementation of ioctl CDROMRESET, continued multisession, began |
| 124 | XA, but still untested. Heavy modifications to drive status de- |
| 125 | tection. |
| 126 | Werner Zimmermann, July 25, 95 |
| 127 | V1.60 XA support now should work. Speeded up drive recognition in cases, |
| 128 | where no drive is installed. |
| 129 | Werner Zimmermann, August 8, 1995 |
| 130 | V1.70 Multisession support now is completed, but there is still not |
| 131 | enough testing done. If you can test it, please contact me. For |
| 132 | details please read Documentation/cdrom/aztcd |
| 133 | Werner Zimmermann, August 19, 1995 |
| 134 | V1.80 Modification to suit the new kernel boot procedure introduced |
| 135 | with kernel 1.3.33. Will definitely not work with older kernels. |
| 136 | Programming done by Linus himself. |
| 137 | Werner Zimmermann, October 11, 1995 |
| 138 | V1.90 Support for Conrad TXC drives, thank's to Jochen Kunz and Olaf Kaluza. |
| 139 | Werner Zimmermann, October 21, 1995 |
| 140 | V2.00 Changed #include "blk.h" to <linux/blk.h> as the directory |
| 141 | structure was changed. README.aztcd is now /usr/src/docu- |
| 142 | mentation/cdrom/aztcd |
| 143 | Werner Zimmermann, November 10, 95 |
| 144 | V2.10 Started to modify azt_poll to prevent reading beyond end of |
| 145 | tracks. |
| 146 | Werner Zimmermann, December 3, 95 |
| 147 | V2.20 Changed some comments |
| 148 | Werner Zimmermann, April 1, 96 |
| 149 | V2.30 Implemented support for CyCDROM CR520, CR940, Code for CR520 |
| 150 | delivered by H.Berger with preworks by E.Moenkeberg. |
| 151 | Werner Zimmermann, April 29, 96 |
| 152 | V2.40 Reorganized the placement of functions in the source code file |
| 153 | to reflect the layered approach; did not actually change code |
| 154 | Werner Zimmermann, May 1, 96 |
| 155 | V2.50 Heiko Eissfeldt suggested to remove some VERIFY_READs in |
| 156 | aztcd_ioctl; check_aztcd_media_change modified |
| 157 | Werner Zimmermann, May 16, 96 |
| 158 | V2.60 Implemented Auto-Probing; made changes for kernel's 2.1.xx blocksize |
| 159 | Adaption to linux kernel > 2.1.0 |
| 160 | Werner Zimmermann, Nov 29, 97 |
| 161 | |
| 162 | November 1999 -- Make kernel-parameter implementation work with 2.3.x |
| 163 | Removed init_module & cleanup_module in favor of |
| 164 | module_init & module_exit. |
| 165 | Torben Mathiasen <tmm@image.dk> |
| 166 | */ |
| 167 | |
| 168 | #include <linux/blkdev.h> |
| 169 | #include "aztcd.h" |
| 170 | |
| 171 | #include <linux/module.h> |
| 172 | #include <linux/errno.h> |
| 173 | #include <linux/sched.h> |
| 174 | #include <linux/mm.h> |
| 175 | #include <linux/timer.h> |
| 176 | #include <linux/fs.h> |
| 177 | #include <linux/kernel.h> |
| 178 | #include <linux/cdrom.h> |
| 179 | #include <linux/ioport.h> |
| 180 | #include <linux/string.h> |
| 181 | #include <linux/major.h> |
| 182 | |
| 183 | #include <linux/init.h> |
| 184 | |
| 185 | #include <asm/system.h> |
| 186 | #include <asm/io.h> |
| 187 | |
| 188 | #include <asm/uaccess.h> |
| 189 | |
| 190 | /*########################################################################### |
| 191 | Defines |
| 192 | ########################################################################### |
| 193 | */ |
| 194 | |
| 195 | #define MAJOR_NR AZTECH_CDROM_MAJOR |
| 196 | #define QUEUE (azt_queue) |
| 197 | #define CURRENT elv_next_request(azt_queue) |
| 198 | #define SET_TIMER(func, jifs) delay_timer.expires = jiffies + (jifs); \ |
| 199 | delay_timer.function = (void *) (func); \ |
| 200 | add_timer(&delay_timer); |
| 201 | |
| 202 | #define CLEAR_TIMER del_timer(&delay_timer); |
| 203 | |
| 204 | #define RETURNM(message,value) {printk("aztcd: Warning: %s failed\n",message);\ |
| 205 | return value;} |
| 206 | #define RETURN(message) {printk("aztcd: Warning: %s failed\n",message);\ |
| 207 | return;} |
| 208 | |
| 209 | /* Macros to switch the IDE-interface to the slave device and back to the master*/ |
| 210 | #define SWITCH_IDE_SLAVE outb_p(0xa0,azt_port+6); \ |
| 211 | outb_p(0x10,azt_port+6); \ |
| 212 | outb_p(0x00,azt_port+7); \ |
| 213 | outb_p(0x10,azt_port+6); |
| 214 | #define SWITCH_IDE_MASTER outb_p(0xa0,azt_port+6); |
| 215 | |
| 216 | |
| 217 | #if 0 |
| 218 | #define AZT_TEST |
| 219 | #define AZT_TEST1 /* <int-..> */ |
| 220 | #define AZT_TEST2 /* do_aztcd_request */ |
| 221 | #define AZT_TEST3 /* AZT_S_state */ |
| 222 | #define AZT_TEST4 /* QUICK_LOOP-counter */ |
| 223 | #define AZT_TEST5 /* port(1) state */ |
| 224 | #define AZT_DEBUG |
| 225 | #define AZT_DEBUG_MULTISESSION |
| 226 | #endif |
| 227 | |
| 228 | static struct request_queue *azt_queue; |
| 229 | |
| 230 | static int current_valid(void) |
| 231 | { |
| 232 | return CURRENT && |
| 233 | CURRENT->cmd == READ && |
| 234 | CURRENT->sector != -1; |
| 235 | } |
| 236 | |
| 237 | #define AFL_STATUSorDATA (AFL_STATUS | AFL_DATA) |
| 238 | #define AZT_BUF_SIZ 16 |
| 239 | |
| 240 | #define READ_TIMEOUT 3000 |
| 241 | |
| 242 | #define azt_port aztcd /*needed for the modutils */ |
| 243 | |
| 244 | /*########################################################################## |
| 245 | Type Definitions |
| 246 | ########################################################################## |
| 247 | */ |
| 248 | enum azt_state_e { AZT_S_IDLE, /* 0 */ |
| 249 | AZT_S_START, /* 1 */ |
| 250 | AZT_S_MODE, /* 2 */ |
| 251 | AZT_S_READ, /* 3 */ |
| 252 | AZT_S_DATA, /* 4 */ |
| 253 | AZT_S_STOP, /* 5 */ |
| 254 | AZT_S_STOPPING /* 6 */ |
| 255 | }; |
| 256 | enum azt_read_modes { AZT_MODE_0, /*read mode for audio disks, not supported by Aztech firmware */ |
| 257 | AZT_MODE_1, /*read mode for normal CD-ROMs */ |
| 258 | AZT_MODE_2 /*read mode for XA CD-ROMs */ |
| 259 | }; |
| 260 | |
| 261 | /*########################################################################## |
| 262 | Global Variables |
| 263 | ########################################################################## |
| 264 | */ |
| 265 | static int aztPresent = 0; |
| 266 | |
| 267 | static volatile int azt_transfer_is_active = 0; |
| 268 | |
| 269 | static char azt_buf[CD_FRAMESIZE_RAW * AZT_BUF_SIZ]; /*buffer for block size conversion */ |
| 270 | #if AZT_PRIVATE_IOCTLS |
| 271 | static char buf[CD_FRAMESIZE_RAW]; /*separate buffer for the ioctls */ |
| 272 | #endif |
| 273 | |
| 274 | static volatile int azt_buf_bn[AZT_BUF_SIZ], azt_next_bn; |
| 275 | static volatile int azt_buf_in, azt_buf_out = -1; |
| 276 | static volatile int azt_error = 0; |
| 277 | static int azt_open_count = 0; |
| 278 | static volatile enum azt_state_e azt_state = AZT_S_IDLE; |
| 279 | #ifdef AZT_TEST3 |
| 280 | static volatile enum azt_state_e azt_state_old = AZT_S_STOP; |
| 281 | static volatile int azt_st_old = 0; |
| 282 | #endif |
| 283 | static volatile enum azt_read_modes azt_read_mode = AZT_MODE_1; |
| 284 | |
| 285 | static int azt_mode = -1; |
| 286 | static volatile int azt_read_count = 1; |
| 287 | |
| 288 | static int azt_port = AZT_BASE_ADDR; |
| 289 | |
| 290 | module_param(azt_port, int, 0); |
| 291 | |
| 292 | static int azt_port_auto[16] = AZT_BASE_AUTO; |
| 293 | |
| 294 | static char azt_cont = 0; |
| 295 | static char azt_init_end = 0; |
| 296 | static char azt_auto_eject = AZT_AUTO_EJECT; |
| 297 | |
| 298 | static int AztTimeout, AztTries; |
| 299 | static DECLARE_WAIT_QUEUE_HEAD(azt_waitq); |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 300 | static DEFINE_TIMER(delay_timer, NULL, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
| 302 | static struct azt_DiskInfo DiskInfo; |
| 303 | static struct azt_Toc Toc[MAX_TRACKS]; |
| 304 | static struct azt_Play_msf azt_Play; |
| 305 | |
| 306 | static int aztAudioStatus = CDROM_AUDIO_NO_STATUS; |
| 307 | static char aztDiskChanged = 1; |
| 308 | static char aztTocUpToDate = 0; |
| 309 | |
| 310 | static unsigned char aztIndatum; |
| 311 | static unsigned long aztTimeOutCount; |
| 312 | static int aztCmd = 0; |
| 313 | |
| 314 | static DEFINE_SPINLOCK(aztSpin); |
| 315 | |
| 316 | /*########################################################################### |
| 317 | Function Prototypes |
| 318 | ########################################################################### |
| 319 | */ |
| 320 | /* CDROM Drive Low Level I/O Functions */ |
| 321 | static void aztStatTimer(void); |
| 322 | |
| 323 | /* CDROM Drive Command Functions */ |
| 324 | static int aztGetDiskInfo(void); |
| 325 | #if AZT_MULTISESSION |
| 326 | static int aztGetMultiDiskInfo(void); |
| 327 | #endif |
| 328 | static int aztGetToc(int multi); |
| 329 | |
| 330 | /* Kernel Interface Functions */ |
| 331 | static int check_aztcd_media_change(struct gendisk *disk); |
| 332 | static int aztcd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd, |
| 333 | unsigned long arg); |
| 334 | static int aztcd_open(struct inode *ip, struct file *fp); |
| 335 | static int aztcd_release(struct inode *inode, struct file *file); |
| 336 | |
| 337 | static struct block_device_operations azt_fops = { |
| 338 | .owner = THIS_MODULE, |
| 339 | .open = aztcd_open, |
| 340 | .release = aztcd_release, |
| 341 | .ioctl = aztcd_ioctl, |
| 342 | .media_changed = check_aztcd_media_change, |
| 343 | }; |
| 344 | |
| 345 | /* Aztcd State Machine: Controls Drive Operating State */ |
| 346 | static void azt_poll(void); |
| 347 | |
| 348 | /* Miscellaneous support functions */ |
| 349 | static void azt_hsg2msf(long hsg, struct msf *msf); |
| 350 | static long azt_msf2hsg(struct msf *mp); |
| 351 | static void azt_bin2bcd(unsigned char *p); |
| 352 | static int azt_bcd2bin(unsigned char bcd); |
| 353 | |
| 354 | /*########################################################################## |
| 355 | CDROM Drive Low Level I/O Functions |
| 356 | ########################################################################## |
| 357 | */ |
| 358 | /* Macros for the drive hardware interface handshake, these macros use |
| 359 | busy waiting */ |
| 360 | /* Wait for OP_OK = drive answers with AFL_OP_OK after receiving a command*/ |
| 361 | # define OP_OK op_ok() |
| 362 | static void op_ok(void) |
| 363 | { |
| 364 | aztTimeOutCount = 0; |
| 365 | do { |
| 366 | aztIndatum = inb(DATA_PORT); |
| 367 | aztTimeOutCount++; |
| 368 | if (aztTimeOutCount >= AZT_TIMEOUT) { |
| 369 | printk("aztcd: Error Wait OP_OK\n"); |
| 370 | break; |
| 371 | } |
| 372 | } while (aztIndatum != AFL_OP_OK); |
| 373 | } |
| 374 | |
| 375 | /* Wait for PA_OK = drive answers with AFL_PA_OK after receiving parameters*/ |
| 376 | #if 0 |
| 377 | # define PA_OK pa_ok() |
| 378 | static void pa_ok(void) |
| 379 | { |
| 380 | aztTimeOutCount = 0; |
| 381 | do { |
| 382 | aztIndatum = inb(DATA_PORT); |
| 383 | aztTimeOutCount++; |
| 384 | if (aztTimeOutCount >= AZT_TIMEOUT) { |
| 385 | printk("aztcd: Error Wait PA_OK\n"); |
| 386 | break; |
| 387 | } |
| 388 | } while (aztIndatum != AFL_PA_OK); |
| 389 | } |
| 390 | #endif |
| 391 | |
| 392 | /* Wait for STEN=Low = handshake signal 'AFL_.._OK available or command executed*/ |
| 393 | # define STEN_LOW sten_low() |
| 394 | static void sten_low(void) |
| 395 | { |
| 396 | aztTimeOutCount = 0; |
| 397 | do { |
| 398 | aztIndatum = inb(STATUS_PORT); |
| 399 | aztTimeOutCount++; |
| 400 | if (aztTimeOutCount >= AZT_TIMEOUT) { |
| 401 | if (azt_init_end) |
| 402 | printk |
| 403 | ("aztcd: Error Wait STEN_LOW commands:%x\n", |
| 404 | aztCmd); |
| 405 | break; |
| 406 | } |
| 407 | } while (aztIndatum & AFL_STATUS); |
| 408 | } |
| 409 | |
| 410 | /* Wait for DTEN=Low = handshake signal 'Data available'*/ |
| 411 | # define DTEN_LOW dten_low() |
| 412 | static void dten_low(void) |
| 413 | { |
| 414 | aztTimeOutCount = 0; |
| 415 | do { |
| 416 | aztIndatum = inb(STATUS_PORT); |
| 417 | aztTimeOutCount++; |
| 418 | if (aztTimeOutCount >= AZT_TIMEOUT) { |
| 419 | printk("aztcd: Error Wait DTEN_OK\n"); |
| 420 | break; |
| 421 | } |
| 422 | } while (aztIndatum & AFL_DATA); |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | * Macro for timer wait on STEN=Low, should only be used for 'slow' commands; |
| 427 | * may cause kernel panic when used in the wrong place |
| 428 | */ |
| 429 | #define STEN_LOW_WAIT statusAzt() |
| 430 | static void statusAzt(void) |
| 431 | { |
| 432 | AztTimeout = AZT_STATUS_DELAY; |
| 433 | SET_TIMER(aztStatTimer, HZ / 100); |
| 434 | sleep_on(&azt_waitq); |
| 435 | if (AztTimeout <= 0) |
| 436 | printk("aztcd: Error Wait STEN_LOW_WAIT command:%x\n", |
| 437 | aztCmd); |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | static void aztStatTimer(void) |
| 442 | { |
| 443 | if (!(inb(STATUS_PORT) & AFL_STATUS)) { |
| 444 | wake_up(&azt_waitq); |
| 445 | return; |
| 446 | } |
| 447 | AztTimeout--; |
| 448 | if (AztTimeout <= 0) { |
| 449 | wake_up(&azt_waitq); |
| 450 | printk("aztcd: Error aztStatTimer: Timeout\n"); |
| 451 | return; |
| 452 | } |
| 453 | SET_TIMER(aztStatTimer, HZ / 100); |
| 454 | } |
| 455 | |
| 456 | /*########################################################################## |
| 457 | CDROM Drive Command Functions |
| 458 | ########################################################################## |
| 459 | */ |
| 460 | /* |
| 461 | * Send a single command, return -1 on error, else 0 |
| 462 | */ |
| 463 | static int aztSendCmd(int cmd) |
| 464 | { |
| 465 | unsigned char data; |
| 466 | int retry; |
| 467 | |
| 468 | #ifdef AZT_DEBUG |
| 469 | printk("aztcd: Executing command %x\n", cmd); |
| 470 | #endif |
| 471 | |
| 472 | if ((azt_port == 0x1f0) || (azt_port == 0x170)) |
| 473 | SWITCH_IDE_SLAVE; /*switch IDE interface to slave configuration */ |
| 474 | |
| 475 | aztCmd = cmd; |
| 476 | outb(POLLED, MODE_PORT); |
| 477 | do { |
| 478 | if (inb(STATUS_PORT) & AFL_STATUS) |
| 479 | break; |
| 480 | inb(DATA_PORT); /* if status left from last command, read and */ |
| 481 | } while (1); /* discard it */ |
| 482 | do { |
| 483 | if (inb(STATUS_PORT) & AFL_DATA) |
| 484 | break; |
| 485 | inb(DATA_PORT); /* if data left from last command, read and */ |
| 486 | } while (1); /* discard it */ |
| 487 | for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) { |
| 488 | outb((unsigned char) cmd, CMD_PORT); |
| 489 | STEN_LOW; |
| 490 | data = inb(DATA_PORT); |
| 491 | if (data == AFL_OP_OK) { |
| 492 | return 0; |
| 493 | } /*OP_OK? */ |
| 494 | if (data == AFL_OP_ERR) { |
| 495 | STEN_LOW; |
| 496 | data = inb(DATA_PORT); |
| 497 | printk |
| 498 | ("### Error 1 aztcd: aztSendCmd %x Error Code %x\n", |
| 499 | cmd, data); |
| 500 | } |
| 501 | } |
| 502 | if (retry >= AZT_RETRY_ATTEMPTS) { |
| 503 | printk("### Error 2 aztcd: aztSendCmd %x \n", cmd); |
| 504 | azt_error = 0xA5; |
| 505 | } |
| 506 | RETURNM("aztSendCmd", -1); |
| 507 | } |
| 508 | |
| 509 | /* |
| 510 | * Send a play or read command to the drive, return -1 on error, else 0 |
| 511 | */ |
| 512 | static int sendAztCmd(int cmd, struct azt_Play_msf *params) |
| 513 | { |
| 514 | unsigned char data; |
| 515 | int retry; |
| 516 | |
| 517 | #ifdef AZT_DEBUG |
| 518 | printk("aztcd: play start=%02x:%02x:%02x end=%02x:%02x:%02x\n", |
| 519 | params->start.min, params->start.sec, params->start.frame, |
| 520 | params->end.min, params->end.sec, params->end.frame); |
| 521 | #endif |
| 522 | for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) { |
| 523 | aztSendCmd(cmd); |
| 524 | outb(params->start.min, CMD_PORT); |
| 525 | outb(params->start.sec, CMD_PORT); |
| 526 | outb(params->start.frame, CMD_PORT); |
| 527 | outb(params->end.min, CMD_PORT); |
| 528 | outb(params->end.sec, CMD_PORT); |
| 529 | outb(params->end.frame, CMD_PORT); |
| 530 | STEN_LOW; |
| 531 | data = inb(DATA_PORT); |
| 532 | if (data == AFL_PA_OK) { |
| 533 | return 0; |
| 534 | } /*PA_OK ? */ |
| 535 | if (data == AFL_PA_ERR) { |
| 536 | STEN_LOW; |
| 537 | data = inb(DATA_PORT); |
| 538 | printk |
| 539 | ("### Error 1 aztcd: sendAztCmd %x Error Code %x\n", |
| 540 | cmd, data); |
| 541 | } |
| 542 | } |
| 543 | if (retry >= AZT_RETRY_ATTEMPTS) { |
| 544 | printk("### Error 2 aztcd: sendAztCmd %x\n ", cmd); |
| 545 | azt_error = 0xA5; |
| 546 | } |
| 547 | RETURNM("sendAztCmd", -1); |
| 548 | } |
| 549 | |
| 550 | /* |
| 551 | * Send a seek command to the drive, return -1 on error, else 0 |
| 552 | */ |
| 553 | static int aztSeek(struct azt_Play_msf *params) |
| 554 | { |
| 555 | unsigned char data; |
| 556 | int retry; |
| 557 | |
| 558 | #ifdef AZT_DEBUG |
| 559 | printk("aztcd: aztSeek %02x:%02x:%02x\n", |
| 560 | params->start.min, params->start.sec, params->start.frame); |
| 561 | #endif |
| 562 | for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) { |
| 563 | aztSendCmd(ACMD_SEEK); |
| 564 | outb(params->start.min, CMD_PORT); |
| 565 | outb(params->start.sec, CMD_PORT); |
| 566 | outb(params->start.frame, CMD_PORT); |
| 567 | STEN_LOW; |
| 568 | data = inb(DATA_PORT); |
| 569 | if (data == AFL_PA_OK) { |
| 570 | return 0; |
| 571 | } /*PA_OK ? */ |
| 572 | if (data == AFL_PA_ERR) { |
| 573 | STEN_LOW; |
| 574 | data = inb(DATA_PORT); |
| 575 | printk("### Error 1 aztcd: aztSeek\n"); |
| 576 | } |
| 577 | } |
| 578 | if (retry >= AZT_RETRY_ATTEMPTS) { |
| 579 | printk("### Error 2 aztcd: aztSeek\n "); |
| 580 | azt_error = 0xA5; |
| 581 | } |
| 582 | RETURNM("aztSeek", -1); |
| 583 | } |
| 584 | |
| 585 | /* Send a Set Disk Type command |
| 586 | does not seem to work with Aztech drives, behavior is completely indepen- |
| 587 | dent on which mode is set ??? |
| 588 | */ |
| 589 | static int aztSetDiskType(int type) |
| 590 | { |
| 591 | unsigned char data; |
| 592 | int retry; |
| 593 | |
| 594 | #ifdef AZT_DEBUG |
| 595 | printk("aztcd: set disk type command: type= %i\n", type); |
| 596 | #endif |
| 597 | for (retry = 0; retry < AZT_RETRY_ATTEMPTS; retry++) { |
| 598 | aztSendCmd(ACMD_SET_DISK_TYPE); |
| 599 | outb(type, CMD_PORT); |
| 600 | STEN_LOW; |
| 601 | data = inb(DATA_PORT); |
| 602 | if (data == AFL_PA_OK) { /*PA_OK ? */ |
| 603 | azt_read_mode = type; |
| 604 | return 0; |
| 605 | } |
| 606 | if (data == AFL_PA_ERR) { |
| 607 | STEN_LOW; |
| 608 | data = inb(DATA_PORT); |
| 609 | printk |
| 610 | ("### Error 1 aztcd: aztSetDiskType %x Error Code %x\n", |
| 611 | type, data); |
| 612 | } |
| 613 | } |
| 614 | if (retry >= AZT_RETRY_ATTEMPTS) { |
| 615 | printk("### Error 2 aztcd: aztSetDiskType %x\n ", type); |
| 616 | azt_error = 0xA5; |
| 617 | } |
| 618 | RETURNM("aztSetDiskType", -1); |
| 619 | } |
| 620 | |
| 621 | |
| 622 | /* used in azt_poll to poll the status, expects another program to issue a |
| 623 | * ACMD_GET_STATUS directly before |
| 624 | */ |
| 625 | static int aztStatus(void) |
| 626 | { |
| 627 | int st; |
| 628 | /* int i; |
| 629 | |
| 630 | i = inb(STATUS_PORT) & AFL_STATUS; is STEN=0? ??? |
| 631 | if (!i) |
| 632 | */ STEN_LOW; |
| 633 | if (aztTimeOutCount < AZT_TIMEOUT) { |
| 634 | st = inb(DATA_PORT) & 0xFF; |
| 635 | return st; |
| 636 | } else |
| 637 | RETURNM("aztStatus", -1); |
| 638 | } |
| 639 | |
| 640 | /* |
| 641 | * Get the drive status |
| 642 | */ |
| 643 | static int getAztStatus(void) |
| 644 | { |
| 645 | int st; |
| 646 | |
| 647 | if (aztSendCmd(ACMD_GET_STATUS)) |
| 648 | RETURNM("getAztStatus 1", -1); |
| 649 | STEN_LOW; |
| 650 | st = inb(DATA_PORT) & 0xFF; |
| 651 | #ifdef AZT_DEBUG |
| 652 | printk("aztcd: Status = %x\n", st); |
| 653 | #endif |
| 654 | if ((st == 0xFF) || (st & AST_CMD_CHECK)) { |
| 655 | printk |
| 656 | ("aztcd: AST_CMD_CHECK error or no status available\n"); |
| 657 | return -1; |
| 658 | } |
| 659 | |
| 660 | if (((st & AST_MODE_BITS) != AST_BUSY) |
| 661 | && (aztAudioStatus == CDROM_AUDIO_PLAY)) |
| 662 | /* XXX might be an error? look at q-channel? */ |
| 663 | aztAudioStatus = CDROM_AUDIO_COMPLETED; |
| 664 | |
| 665 | if ((st & AST_DSK_CHG) || (st & AST_NOT_READY)) { |
| 666 | aztDiskChanged = 1; |
| 667 | aztTocUpToDate = 0; |
| 668 | aztAudioStatus = CDROM_AUDIO_NO_STATUS; |
| 669 | } |
| 670 | return st; |
| 671 | } |
| 672 | |
| 673 | |
| 674 | /* |
| 675 | * Send a 'Play' command and get the status. Use only from the top half. |
| 676 | */ |
| 677 | static int aztPlay(struct azt_Play_msf *arg) |
| 678 | { |
| 679 | if (sendAztCmd(ACMD_PLAY_AUDIO, arg) < 0) |
| 680 | RETURNM("aztPlay", -1); |
| 681 | return 0; |
| 682 | } |
| 683 | |
| 684 | /* |
| 685 | * Subroutines to automatically close the door (tray) and |
| 686 | * lock it closed when the cd is mounted. Leave the tray |
| 687 | * locking as an option |
| 688 | */ |
| 689 | static void aztCloseDoor(void) |
| 690 | { |
| 691 | aztSendCmd(ACMD_CLOSE); |
| 692 | STEN_LOW; |
| 693 | return; |
| 694 | } |
| 695 | |
| 696 | static void aztLockDoor(void) |
| 697 | { |
| 698 | #if AZT_ALLOW_TRAY_LOCK |
| 699 | aztSendCmd(ACMD_LOCK); |
| 700 | STEN_LOW; |
| 701 | #endif |
| 702 | return; |
| 703 | } |
| 704 | |
| 705 | static void aztUnlockDoor(void) |
| 706 | { |
| 707 | #if AZT_ALLOW_TRAY_LOCK |
| 708 | aztSendCmd(ACMD_UNLOCK); |
| 709 | STEN_LOW; |
| 710 | #endif |
| 711 | return; |
| 712 | } |
| 713 | |
| 714 | /* |
| 715 | * Read a value from the drive. Should return quickly, so a busy wait |
| 716 | * is used to avoid excessive rescheduling. The read command itself must |
| 717 | * be issued with aztSendCmd() directly before |
| 718 | */ |
| 719 | static int aztGetValue(unsigned char *result) |
| 720 | { |
| 721 | int s; |
| 722 | |
| 723 | STEN_LOW; |
| 724 | if (aztTimeOutCount >= AZT_TIMEOUT) { |
| 725 | printk("aztcd: aztGetValue timeout\n"); |
| 726 | return -1; |
| 727 | } |
| 728 | s = inb(DATA_PORT) & 0xFF; |
| 729 | *result = (unsigned char) s; |
| 730 | return 0; |
| 731 | } |
| 732 | |
| 733 | /* |
| 734 | * Read the current Q-channel info. Also used for reading the |
| 735 | * table of contents. |
| 736 | */ |
| 737 | static int aztGetQChannelInfo(struct azt_Toc *qp) |
| 738 | { |
| 739 | unsigned char notUsed; |
| 740 | int st; |
| 741 | |
| 742 | #ifdef AZT_DEBUG |
| 743 | printk("aztcd: starting aztGetQChannelInfo Time:%li\n", jiffies); |
| 744 | #endif |
| 745 | if ((st = getAztStatus()) == -1) |
| 746 | RETURNM("aztGetQChannelInfo 1", -1); |
| 747 | if (aztSendCmd(ACMD_GET_Q_CHANNEL)) |
| 748 | RETURNM("aztGetQChannelInfo 2", -1); |
| 749 | /*STEN_LOW_WAIT; ??? Dosemu0.60's cdrom.c does not like STEN_LOW_WAIT here */ |
| 750 | if (aztGetValue(¬Used)) |
| 751 | RETURNM("aztGetQChannelInfo 3", -1); /*??? Nullbyte einlesen */ |
| 752 | if ((st & AST_MODE_BITS) == AST_INITIAL) { |
| 753 | qp->ctrl_addr = 0; /* when audio stop ACMD_GET_Q_CHANNEL returns */ |
| 754 | qp->track = 0; /* only one byte with Aztech drives */ |
| 755 | qp->pointIndex = 0; |
| 756 | qp->trackTime.min = 0; |
| 757 | qp->trackTime.sec = 0; |
| 758 | qp->trackTime.frame = 0; |
| 759 | qp->diskTime.min = 0; |
| 760 | qp->diskTime.sec = 0; |
| 761 | qp->diskTime.frame = 0; |
| 762 | return 0; |
| 763 | } else { |
| 764 | if (aztGetValue(&qp->ctrl_addr) < 0) |
| 765 | RETURNM("aztGetQChannelInfo 4", -1); |
| 766 | if (aztGetValue(&qp->track) < 0) |
| 767 | RETURNM("aztGetQChannelInfo 4", -1); |
| 768 | if (aztGetValue(&qp->pointIndex) < 0) |
| 769 | RETURNM("aztGetQChannelInfo 4", -1); |
| 770 | if (aztGetValue(&qp->trackTime.min) < 0) |
| 771 | RETURNM("aztGetQChannelInfo 4", -1); |
| 772 | if (aztGetValue(&qp->trackTime.sec) < 0) |
| 773 | RETURNM("aztGetQChannelInfo 4", -1); |
| 774 | if (aztGetValue(&qp->trackTime.frame) < 0) |
| 775 | RETURNM("aztGetQChannelInfo 4", -1); |
| 776 | if (aztGetValue(¬Used) < 0) |
| 777 | RETURNM("aztGetQChannelInfo 4", -1); |
| 778 | if (aztGetValue(&qp->diskTime.min) < 0) |
| 779 | RETURNM("aztGetQChannelInfo 4", -1); |
| 780 | if (aztGetValue(&qp->diskTime.sec) < 0) |
| 781 | RETURNM("aztGetQChannelInfo 4", -1); |
| 782 | if (aztGetValue(&qp->diskTime.frame) < 0) |
| 783 | RETURNM("aztGetQChannelInfo 4", -1); |
| 784 | } |
| 785 | #ifdef AZT_DEBUG |
| 786 | printk("aztcd: exiting aztGetQChannelInfo Time:%li\n", jiffies); |
| 787 | #endif |
| 788 | return 0; |
| 789 | } |
| 790 | |
| 791 | /* |
| 792 | * Read the table of contents (TOC) and TOC header if necessary |
| 793 | */ |
| 794 | static int aztUpdateToc(void) |
| 795 | { |
| 796 | int st; |
| 797 | |
| 798 | #ifdef AZT_DEBUG |
| 799 | printk("aztcd: starting aztUpdateToc Time:%li\n", jiffies); |
| 800 | #endif |
| 801 | if (aztTocUpToDate) |
| 802 | return 0; |
| 803 | |
| 804 | if (aztGetDiskInfo() < 0) |
| 805 | return -EIO; |
| 806 | |
| 807 | if (aztGetToc(0) < 0) |
| 808 | return -EIO; |
| 809 | |
| 810 | /*audio disk detection |
| 811 | with my Aztech drive there is no audio status bit, so I use the copy |
| 812 | protection bit of the first track. If this track is copy protected |
| 813 | (copy bit = 0), I assume, it's an audio disk. Strange, but works ??? */ |
| 814 | if (!(Toc[DiskInfo.first].ctrl_addr & 0x40)) |
| 815 | DiskInfo.audio = 1; |
| 816 | else |
| 817 | DiskInfo.audio = 0; |
| 818 | |
| 819 | /* XA detection */ |
| 820 | if (!DiskInfo.audio) { |
| 821 | azt_Play.start.min = 0; /*XA detection only seems to work */ |
| 822 | azt_Play.start.sec = 2; /*when we play a track */ |
| 823 | azt_Play.start.frame = 0; |
| 824 | azt_Play.end.min = 0; |
| 825 | azt_Play.end.sec = 0; |
| 826 | azt_Play.end.frame = 1; |
| 827 | if (sendAztCmd(ACMD_PLAY_READ, &azt_Play)) |
| 828 | return -1; |
| 829 | DTEN_LOW; |
| 830 | for (st = 0; st < CD_FRAMESIZE; st++) |
| 831 | inb(DATA_PORT); |
| 832 | } |
| 833 | DiskInfo.xa = getAztStatus() & AST_MODE; |
| 834 | if (DiskInfo.xa) { |
| 835 | printk |
| 836 | ("aztcd: XA support experimental - mail results to Werner.Zimmermann@fht-esslingen.de\n"); |
| 837 | } |
| 838 | |
| 839 | /*multisession detection |
| 840 | support for multisession CDs is done automatically with Aztech drives, |
| 841 | we don't have to take care about TOC redirection; if we want the isofs |
| 842 | to take care about redirection, we have to set AZT_MULTISESSION to 1 */ |
| 843 | DiskInfo.multi = 0; |
| 844 | #if AZT_MULTISESSION |
| 845 | if (DiskInfo.xa) { |
| 846 | aztGetMultiDiskInfo(); /*here Disk.Info.multi is set */ |
| 847 | } |
| 848 | #endif |
| 849 | if (DiskInfo.multi) { |
| 850 | DiskInfo.lastSession.min = Toc[DiskInfo.next].diskTime.min; |
| 851 | DiskInfo.lastSession.sec = Toc[DiskInfo.next].diskTime.sec; |
| 852 | DiskInfo.lastSession.frame = |
| 853 | Toc[DiskInfo.next].diskTime.frame; |
| 854 | printk("aztcd: Multisession support experimental\n"); |
| 855 | } else { |
| 856 | DiskInfo.lastSession.min = |
| 857 | Toc[DiskInfo.first].diskTime.min; |
| 858 | DiskInfo.lastSession.sec = |
| 859 | Toc[DiskInfo.first].diskTime.sec; |
| 860 | DiskInfo.lastSession.frame = |
| 861 | Toc[DiskInfo.first].diskTime.frame; |
| 862 | } |
| 863 | |
| 864 | aztTocUpToDate = 1; |
| 865 | #ifdef AZT_DEBUG |
| 866 | printk("aztcd: exiting aztUpdateToc Time:%li\n", jiffies); |
| 867 | #endif |
| 868 | return 0; |
| 869 | } |
| 870 | |
| 871 | |
| 872 | /* Read the table of contents header, i.e. no. of tracks and start of first |
| 873 | * track |
| 874 | */ |
| 875 | static int aztGetDiskInfo(void) |
| 876 | { |
| 877 | int limit; |
| 878 | unsigned char test; |
| 879 | struct azt_Toc qInfo; |
| 880 | |
| 881 | #ifdef AZT_DEBUG |
| 882 | printk("aztcd: starting aztGetDiskInfo Time:%li\n", jiffies); |
| 883 | #endif |
| 884 | if (aztSendCmd(ACMD_SEEK_TO_LEADIN)) |
| 885 | RETURNM("aztGetDiskInfo 1", -1); |
| 886 | STEN_LOW_WAIT; |
| 887 | test = 0; |
| 888 | for (limit = 300; limit > 0; limit--) { |
| 889 | if (aztGetQChannelInfo(&qInfo) < 0) |
| 890 | RETURNM("aztGetDiskInfo 2", -1); |
| 891 | if (qInfo.pointIndex == 0xA0) { /*Number of FirstTrack */ |
| 892 | DiskInfo.first = qInfo.diskTime.min; |
| 893 | DiskInfo.first = azt_bcd2bin(DiskInfo.first); |
| 894 | test = test | 0x01; |
| 895 | } |
| 896 | if (qInfo.pointIndex == 0xA1) { /*Number of LastTrack */ |
| 897 | DiskInfo.last = qInfo.diskTime.min; |
| 898 | DiskInfo.last = azt_bcd2bin(DiskInfo.last); |
| 899 | test = test | 0x02; |
| 900 | } |
| 901 | if (qInfo.pointIndex == 0xA2) { /*DiskLength */ |
| 902 | DiskInfo.diskLength.min = qInfo.diskTime.min; |
| 903 | DiskInfo.diskLength.sec = qInfo.diskTime.sec; |
| 904 | DiskInfo.diskLength.frame = qInfo.diskTime.frame; |
| 905 | test = test | 0x04; |
| 906 | } |
| 907 | if ((qInfo.pointIndex == DiskInfo.first) && (test & 0x01)) { /*StartTime of First Track */ |
| 908 | DiskInfo.firstTrack.min = qInfo.diskTime.min; |
| 909 | DiskInfo.firstTrack.sec = qInfo.diskTime.sec; |
| 910 | DiskInfo.firstTrack.frame = qInfo.diskTime.frame; |
| 911 | test = test | 0x08; |
| 912 | } |
| 913 | if (test == 0x0F) |
| 914 | break; |
| 915 | } |
| 916 | #ifdef AZT_DEBUG |
| 917 | printk("aztcd: exiting aztGetDiskInfo Time:%li\n", jiffies); |
| 918 | printk |
| 919 | ("Disk Info: first %d last %d length %02X:%02X.%02X dez first %02X:%02X.%02X dez\n", |
| 920 | DiskInfo.first, DiskInfo.last, DiskInfo.diskLength.min, |
| 921 | DiskInfo.diskLength.sec, DiskInfo.diskLength.frame, |
| 922 | DiskInfo.firstTrack.min, DiskInfo.firstTrack.sec, |
| 923 | DiskInfo.firstTrack.frame); |
| 924 | #endif |
| 925 | if (test != 0x0F) |
| 926 | return -1; |
| 927 | return 0; |
| 928 | } |
| 929 | |
| 930 | #if AZT_MULTISESSION |
| 931 | /* |
| 932 | * Get Multisession Disk Info |
| 933 | */ |
| 934 | static int aztGetMultiDiskInfo(void) |
| 935 | { |
| 936 | int limit, k = 5; |
| 937 | unsigned char test; |
| 938 | struct azt_Toc qInfo; |
| 939 | |
| 940 | #ifdef AZT_DEBUG |
| 941 | printk("aztcd: starting aztGetMultiDiskInfo\n"); |
| 942 | #endif |
| 943 | |
| 944 | do { |
| 945 | azt_Play.start.min = Toc[DiskInfo.last + 1].diskTime.min; |
| 946 | azt_Play.start.sec = Toc[DiskInfo.last + 1].diskTime.sec; |
| 947 | azt_Play.start.frame = |
| 948 | Toc[DiskInfo.last + 1].diskTime.frame; |
| 949 | test = 0; |
| 950 | |
| 951 | for (limit = 30; limit > 0; limit--) { /*Seek for LeadIn of next session */ |
| 952 | if (aztSeek(&azt_Play)) |
| 953 | RETURNM("aztGetMultiDiskInfo 1", -1); |
| 954 | if (aztGetQChannelInfo(&qInfo) < 0) |
| 955 | RETURNM("aztGetMultiDiskInfo 2", -1); |
| 956 | if ((qInfo.track == 0) && (qInfo.pointIndex)) |
| 957 | break; /*LeadIn found */ |
| 958 | if ((azt_Play.start.sec += 10) > 59) { |
| 959 | azt_Play.start.sec = 0; |
| 960 | azt_Play.start.min++; |
| 961 | } |
| 962 | } |
| 963 | if (!limit) |
| 964 | break; /*Check, if a leadin track was found, if not we're |
| 965 | at the end of the disk */ |
| 966 | #ifdef AZT_DEBUG_MULTISESSION |
| 967 | printk("leadin found track %d pointIndex %x limit %d\n", |
| 968 | qInfo.track, qInfo.pointIndex, limit); |
| 969 | #endif |
| 970 | for (limit = 300; limit > 0; limit--) { |
| 971 | if (++azt_Play.start.frame > 74) { |
| 972 | azt_Play.start.frame = 0; |
| 973 | if (azt_Play.start.sec > 59) { |
| 974 | azt_Play.start.sec = 0; |
| 975 | azt_Play.start.min++; |
| 976 | } |
| 977 | } |
| 978 | if (aztSeek(&azt_Play)) |
| 979 | RETURNM("aztGetMultiDiskInfo 3", -1); |
| 980 | if (aztGetQChannelInfo(&qInfo) < 0) |
| 981 | RETURNM("aztGetMultiDiskInfo 4", -1); |
| 982 | if (qInfo.pointIndex == 0xA0) { /*Number of NextTrack */ |
| 983 | DiskInfo.next = qInfo.diskTime.min; |
| 984 | DiskInfo.next = azt_bcd2bin(DiskInfo.next); |
| 985 | test = test | 0x01; |
| 986 | } |
| 987 | if (qInfo.pointIndex == 0xA1) { /*Number of LastTrack */ |
| 988 | DiskInfo.last = qInfo.diskTime.min; |
| 989 | DiskInfo.last = azt_bcd2bin(DiskInfo.last); |
| 990 | test = test | 0x02; |
| 991 | } |
| 992 | if (qInfo.pointIndex == 0xA2) { /*DiskLength */ |
| 993 | DiskInfo.diskLength.min = |
| 994 | qInfo.diskTime.min; |
| 995 | DiskInfo.diskLength.sec = |
| 996 | qInfo.diskTime.sec; |
| 997 | DiskInfo.diskLength.frame = |
| 998 | qInfo.diskTime.frame; |
| 999 | test = test | 0x04; |
| 1000 | } |
| 1001 | if ((qInfo.pointIndex == DiskInfo.next) && (test & 0x01)) { /*StartTime of Next Track */ |
| 1002 | DiskInfo.nextSession.min = |
| 1003 | qInfo.diskTime.min; |
| 1004 | DiskInfo.nextSession.sec = |
| 1005 | qInfo.diskTime.sec; |
| 1006 | DiskInfo.nextSession.frame = |
| 1007 | qInfo.diskTime.frame; |
| 1008 | test = test | 0x08; |
| 1009 | } |
| 1010 | if (test == 0x0F) |
| 1011 | break; |
| 1012 | } |
| 1013 | #ifdef AZT_DEBUG_MULTISESSION |
| 1014 | printk |
| 1015 | ("MultiDisk Info: first %d next %d last %d length %02x:%02x.%02x dez first %02x:%02x.%02x dez next %02x:%02x.%02x dez\n", |
| 1016 | DiskInfo.first, DiskInfo.next, DiskInfo.last, |
| 1017 | DiskInfo.diskLength.min, DiskInfo.diskLength.sec, |
| 1018 | DiskInfo.diskLength.frame, DiskInfo.firstTrack.min, |
| 1019 | DiskInfo.firstTrack.sec, DiskInfo.firstTrack.frame, |
| 1020 | DiskInfo.nextSession.min, DiskInfo.nextSession.sec, |
| 1021 | DiskInfo.nextSession.frame); |
| 1022 | #endif |
| 1023 | if (test != 0x0F) |
| 1024 | break; |
| 1025 | else |
| 1026 | DiskInfo.multi = 1; /*found TOC of more than one session */ |
| 1027 | aztGetToc(1); |
| 1028 | } while (--k); |
| 1029 | |
| 1030 | #ifdef AZT_DEBUG |
| 1031 | printk("aztcd: exiting aztGetMultiDiskInfo Time:%li\n", jiffies); |
| 1032 | #endif |
| 1033 | return 0; |
| 1034 | } |
| 1035 | #endif |
| 1036 | |
| 1037 | /* |
| 1038 | * Read the table of contents (TOC) |
| 1039 | */ |
| 1040 | static int aztGetToc(int multi) |
| 1041 | { |
| 1042 | int i, px; |
| 1043 | int limit; |
| 1044 | struct azt_Toc qInfo; |
| 1045 | |
| 1046 | #ifdef AZT_DEBUG |
| 1047 | printk("aztcd: starting aztGetToc Time:%li\n", jiffies); |
| 1048 | #endif |
| 1049 | if (!multi) { |
| 1050 | for (i = 0; i < MAX_TRACKS; i++) |
| 1051 | Toc[i].pointIndex = 0; |
| 1052 | i = DiskInfo.last + 3; |
| 1053 | } else { |
| 1054 | for (i = DiskInfo.next; i < MAX_TRACKS; i++) |
| 1055 | Toc[i].pointIndex = 0; |
| 1056 | i = DiskInfo.last + 4 - DiskInfo.next; |
| 1057 | } |
| 1058 | |
| 1059 | /*Is there a good reason to stop motor before TOC read? |
| 1060 | if (aztSendCmd(ACMD_STOP)) RETURNM("aztGetToc 1",-1); |
| 1061 | STEN_LOW_WAIT; |
| 1062 | */ |
| 1063 | |
| 1064 | if (!multi) { |
| 1065 | azt_mode = 0x05; |
| 1066 | if (aztSendCmd(ACMD_SEEK_TO_LEADIN)) |
| 1067 | RETURNM("aztGetToc 2", -1); |
| 1068 | STEN_LOW_WAIT; |
| 1069 | } |
| 1070 | for (limit = 300; limit > 0; limit--) { |
| 1071 | if (multi) { |
| 1072 | if (++azt_Play.start.sec > 59) { |
| 1073 | azt_Play.start.sec = 0; |
| 1074 | azt_Play.start.min++; |
| 1075 | } |
| 1076 | if (aztSeek(&azt_Play)) |
| 1077 | RETURNM("aztGetToc 3", -1); |
| 1078 | } |
| 1079 | if (aztGetQChannelInfo(&qInfo) < 0) |
| 1080 | break; |
| 1081 | |
| 1082 | px = azt_bcd2bin(qInfo.pointIndex); |
| 1083 | |
| 1084 | if (px > 0 && px < MAX_TRACKS && qInfo.track == 0) |
| 1085 | if (Toc[px].pointIndex == 0) { |
| 1086 | Toc[px] = qInfo; |
| 1087 | i--; |
| 1088 | } |
| 1089 | |
| 1090 | if (i <= 0) |
| 1091 | break; |
| 1092 | } |
| 1093 | |
| 1094 | Toc[DiskInfo.last + 1].diskTime = DiskInfo.diskLength; |
| 1095 | Toc[DiskInfo.last].trackTime = DiskInfo.diskLength; |
| 1096 | |
| 1097 | #ifdef AZT_DEBUG_MULTISESSION |
| 1098 | printk("aztcd: exiting aztGetToc\n"); |
| 1099 | for (i = 1; i <= DiskInfo.last + 1; i++) |
| 1100 | printk |
| 1101 | ("i = %2d ctl-adr = %02X track %2d px %02X %02X:%02X.%02X dez %02X:%02X.%02X dez\n", |
| 1102 | i, Toc[i].ctrl_addr, Toc[i].track, Toc[i].pointIndex, |
| 1103 | Toc[i].trackTime.min, Toc[i].trackTime.sec, |
| 1104 | Toc[i].trackTime.frame, Toc[i].diskTime.min, |
| 1105 | Toc[i].diskTime.sec, Toc[i].diskTime.frame); |
| 1106 | for (i = 100; i < 103; i++) |
| 1107 | printk |
| 1108 | ("i = %2d ctl-adr = %02X track %2d px %02X %02X:%02X.%02X dez %02X:%02X.%02X dez\n", |
| 1109 | i, Toc[i].ctrl_addr, Toc[i].track, Toc[i].pointIndex, |
| 1110 | Toc[i].trackTime.min, Toc[i].trackTime.sec, |
| 1111 | Toc[i].trackTime.frame, Toc[i].diskTime.min, |
| 1112 | Toc[i].diskTime.sec, Toc[i].diskTime.frame); |
| 1113 | #endif |
| 1114 | |
| 1115 | return limit > 0 ? 0 : -1; |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | /*########################################################################## |
| 1120 | Kernel Interface Functions |
| 1121 | ########################################################################## |
| 1122 | */ |
| 1123 | |
| 1124 | #ifndef MODULE |
| 1125 | static int __init aztcd_setup(char *str) |
| 1126 | { |
| 1127 | int ints[4]; |
| 1128 | |
| 1129 | (void) get_options(str, ARRAY_SIZE(ints), ints); |
| 1130 | |
| 1131 | if (ints[0] > 0) |
| 1132 | azt_port = ints[1]; |
| 1133 | if (ints[1] > 1) |
| 1134 | azt_cont = ints[2]; |
| 1135 | return 1; |
| 1136 | } |
| 1137 | |
| 1138 | __setup("aztcd=", aztcd_setup); |
| 1139 | |
| 1140 | #endif /* !MODULE */ |
| 1141 | |
| 1142 | /* |
| 1143 | * Checking if the media has been changed |
| 1144 | */ |
| 1145 | static int check_aztcd_media_change(struct gendisk *disk) |
| 1146 | { |
| 1147 | if (aztDiskChanged) { /* disk changed */ |
| 1148 | aztDiskChanged = 0; |
| 1149 | return 1; |
| 1150 | } else |
| 1151 | return 0; /* no change */ |
| 1152 | } |
| 1153 | |
| 1154 | /* |
| 1155 | * Kernel IO-controls |
| 1156 | */ |
| 1157 | static int aztcd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd, |
| 1158 | unsigned long arg) |
| 1159 | { |
| 1160 | int i; |
| 1161 | struct azt_Toc qInfo; |
| 1162 | struct cdrom_ti ti; |
| 1163 | struct cdrom_tochdr tocHdr; |
| 1164 | struct cdrom_msf msf; |
| 1165 | struct cdrom_tocentry entry; |
| 1166 | struct azt_Toc *tocPtr; |
| 1167 | struct cdrom_subchnl subchnl; |
| 1168 | struct cdrom_volctrl volctrl; |
| 1169 | void __user *argp = (void __user *)arg; |
| 1170 | |
| 1171 | #ifdef AZT_DEBUG |
| 1172 | printk("aztcd: starting aztcd_ioctl - Command:%x Time: %li\n", |
| 1173 | cmd, jiffies); |
| 1174 | printk("aztcd Status %x\n", getAztStatus()); |
| 1175 | #endif |
| 1176 | if (!ip) |
| 1177 | RETURNM("aztcd_ioctl 1", -EINVAL); |
| 1178 | if (getAztStatus() < 0) |
| 1179 | RETURNM("aztcd_ioctl 2", -EIO); |
| 1180 | if ((!aztTocUpToDate) || (aztDiskChanged)) { |
| 1181 | if ((i = aztUpdateToc()) < 0) |
| 1182 | RETURNM("aztcd_ioctl 3", i); /* error reading TOC */ |
| 1183 | } |
| 1184 | |
| 1185 | switch (cmd) { |
| 1186 | case CDROMSTART: /* Spin up the drive. Don't know, what to do, |
| 1187 | at least close the tray */ |
| 1188 | #if AZT_PRIVATE_IOCTLS |
| 1189 | if (aztSendCmd(ACMD_CLOSE)) |
| 1190 | RETURNM("aztcd_ioctl 4", -1); |
| 1191 | STEN_LOW_WAIT; |
| 1192 | #endif |
| 1193 | break; |
| 1194 | case CDROMSTOP: /* Spin down the drive */ |
| 1195 | if (aztSendCmd(ACMD_STOP)) |
| 1196 | RETURNM("aztcd_ioctl 5", -1); |
| 1197 | STEN_LOW_WAIT; |
| 1198 | /* should we do anything if it fails? */ |
| 1199 | aztAudioStatus = CDROM_AUDIO_NO_STATUS; |
| 1200 | break; |
| 1201 | case CDROMPAUSE: /* Pause the drive */ |
| 1202 | if (aztAudioStatus != CDROM_AUDIO_PLAY) |
| 1203 | return -EINVAL; |
| 1204 | |
| 1205 | if (aztGetQChannelInfo(&qInfo) < 0) { /* didn't get q channel info */ |
| 1206 | aztAudioStatus = CDROM_AUDIO_NO_STATUS; |
| 1207 | RETURNM("aztcd_ioctl 7", 0); |
| 1208 | } |
| 1209 | azt_Play.start = qInfo.diskTime; /* remember restart point */ |
| 1210 | |
| 1211 | if (aztSendCmd(ACMD_PAUSE)) |
| 1212 | RETURNM("aztcd_ioctl 8", -1); |
| 1213 | STEN_LOW_WAIT; |
| 1214 | aztAudioStatus = CDROM_AUDIO_PAUSED; |
| 1215 | break; |
| 1216 | case CDROMRESUME: /* Play it again, Sam */ |
| 1217 | if (aztAudioStatus != CDROM_AUDIO_PAUSED) |
| 1218 | return -EINVAL; |
| 1219 | /* restart the drive at the saved position. */ |
| 1220 | i = aztPlay(&azt_Play); |
| 1221 | if (i < 0) { |
| 1222 | aztAudioStatus = CDROM_AUDIO_ERROR; |
| 1223 | return -EIO; |
| 1224 | } |
| 1225 | aztAudioStatus = CDROM_AUDIO_PLAY; |
| 1226 | break; |
| 1227 | case CDROMMULTISESSION: /*multisession support -- experimental */ |
| 1228 | { |
| 1229 | struct cdrom_multisession ms; |
| 1230 | #ifdef AZT_DEBUG |
| 1231 | printk("aztcd ioctl MULTISESSION\n"); |
| 1232 | #endif |
| 1233 | if (copy_from_user(&ms, argp, |
| 1234 | sizeof(struct cdrom_multisession))) |
| 1235 | return -EFAULT; |
| 1236 | if (ms.addr_format == CDROM_MSF) { |
| 1237 | ms.addr.msf.minute = |
| 1238 | azt_bcd2bin(DiskInfo.lastSession.min); |
| 1239 | ms.addr.msf.second = |
| 1240 | azt_bcd2bin(DiskInfo.lastSession.sec); |
| 1241 | ms.addr.msf.frame = |
| 1242 | azt_bcd2bin(DiskInfo.lastSession. |
| 1243 | frame); |
| 1244 | } else if (ms.addr_format == CDROM_LBA) |
| 1245 | ms.addr.lba = |
| 1246 | azt_msf2hsg(&DiskInfo.lastSession); |
| 1247 | else |
| 1248 | return -EINVAL; |
| 1249 | ms.xa_flag = DiskInfo.xa; |
| 1250 | if (copy_to_user(argp, &ms, |
| 1251 | sizeof(struct cdrom_multisession))) |
| 1252 | return -EFAULT; |
| 1253 | #ifdef AZT_DEBUG |
| 1254 | if (ms.addr_format == CDROM_MSF) |
| 1255 | printk |
| 1256 | ("aztcd multisession xa:%d, msf:%02x:%02x.%02x [%02x:%02x.%02x])\n", |
| 1257 | ms.xa_flag, ms.addr.msf.minute, |
| 1258 | ms.addr.msf.second, ms.addr.msf.frame, |
| 1259 | DiskInfo.lastSession.min, |
| 1260 | DiskInfo.lastSession.sec, |
| 1261 | DiskInfo.lastSession.frame); |
| 1262 | else |
| 1263 | printk |
| 1264 | ("aztcd multisession %d, lba:0x%08x [%02x:%02x.%02x])\n", |
| 1265 | ms.xa_flag, ms.addr.lba, |
| 1266 | DiskInfo.lastSession.min, |
| 1267 | DiskInfo.lastSession.sec, |
| 1268 | DiskInfo.lastSession.frame); |
| 1269 | #endif |
| 1270 | return 0; |
| 1271 | } |
| 1272 | case CDROMPLAYTRKIND: /* Play a track. This currently ignores index. */ |
| 1273 | if (copy_from_user(&ti, argp, sizeof ti)) |
| 1274 | return -EFAULT; |
| 1275 | if (ti.cdti_trk0 < DiskInfo.first |
| 1276 | || ti.cdti_trk0 > DiskInfo.last |
| 1277 | || ti.cdti_trk1 < ti.cdti_trk0) { |
| 1278 | return -EINVAL; |
| 1279 | } |
| 1280 | if (ti.cdti_trk1 > DiskInfo.last) |
| 1281 | ti.cdti_trk1 = DiskInfo.last; |
| 1282 | azt_Play.start = Toc[ti.cdti_trk0].diskTime; |
| 1283 | azt_Play.end = Toc[ti.cdti_trk1 + 1].diskTime; |
| 1284 | #ifdef AZT_DEBUG |
| 1285 | printk("aztcd play: %02x:%02x.%02x to %02x:%02x.%02x\n", |
| 1286 | azt_Play.start.min, azt_Play.start.sec, |
| 1287 | azt_Play.start.frame, azt_Play.end.min, |
| 1288 | azt_Play.end.sec, azt_Play.end.frame); |
| 1289 | #endif |
| 1290 | i = aztPlay(&azt_Play); |
| 1291 | if (i < 0) { |
| 1292 | aztAudioStatus = CDROM_AUDIO_ERROR; |
| 1293 | return -EIO; |
| 1294 | } |
| 1295 | aztAudioStatus = CDROM_AUDIO_PLAY; |
| 1296 | break; |
| 1297 | case CDROMPLAYMSF: /* Play starting at the given MSF address. */ |
| 1298 | /* if (aztAudioStatus == CDROM_AUDIO_PLAY) |
| 1299 | { if (aztSendCmd(ACMD_STOP)) RETURNM("aztcd_ioctl 9",-1); |
| 1300 | STEN_LOW; |
| 1301 | aztAudioStatus = CDROM_AUDIO_NO_STATUS; |
| 1302 | } |
| 1303 | */ |
| 1304 | if (copy_from_user(&msf, argp, sizeof msf)) |
| 1305 | return -EFAULT; |
| 1306 | /* convert to bcd */ |
| 1307 | azt_bin2bcd(&msf.cdmsf_min0); |
| 1308 | azt_bin2bcd(&msf.cdmsf_sec0); |
| 1309 | azt_bin2bcd(&msf.cdmsf_frame0); |
| 1310 | azt_bin2bcd(&msf.cdmsf_min1); |
| 1311 | azt_bin2bcd(&msf.cdmsf_sec1); |
| 1312 | azt_bin2bcd(&msf.cdmsf_frame1); |
| 1313 | azt_Play.start.min = msf.cdmsf_min0; |
| 1314 | azt_Play.start.sec = msf.cdmsf_sec0; |
| 1315 | azt_Play.start.frame = msf.cdmsf_frame0; |
| 1316 | azt_Play.end.min = msf.cdmsf_min1; |
| 1317 | azt_Play.end.sec = msf.cdmsf_sec1; |
| 1318 | azt_Play.end.frame = msf.cdmsf_frame1; |
| 1319 | #ifdef AZT_DEBUG |
| 1320 | printk("aztcd play: %02x:%02x.%02x to %02x:%02x.%02x\n", |
| 1321 | azt_Play.start.min, azt_Play.start.sec, |
| 1322 | azt_Play.start.frame, azt_Play.end.min, |
| 1323 | azt_Play.end.sec, azt_Play.end.frame); |
| 1324 | #endif |
| 1325 | i = aztPlay(&azt_Play); |
| 1326 | if (i < 0) { |
| 1327 | aztAudioStatus = CDROM_AUDIO_ERROR; |
| 1328 | return -EIO; |
| 1329 | } |
| 1330 | aztAudioStatus = CDROM_AUDIO_PLAY; |
| 1331 | break; |
| 1332 | |
| 1333 | case CDROMREADTOCHDR: /* Read the table of contents header */ |
| 1334 | tocHdr.cdth_trk0 = DiskInfo.first; |
| 1335 | tocHdr.cdth_trk1 = DiskInfo.last; |
| 1336 | if (copy_to_user(argp, &tocHdr, sizeof tocHdr)) |
| 1337 | return -EFAULT; |
| 1338 | break; |
| 1339 | case CDROMREADTOCENTRY: /* Read an entry in the table of contents */ |
| 1340 | if (copy_from_user(&entry, argp, sizeof entry)) |
| 1341 | return -EFAULT; |
| 1342 | if ((!aztTocUpToDate) || aztDiskChanged) |
| 1343 | aztUpdateToc(); |
| 1344 | if (entry.cdte_track == CDROM_LEADOUT) |
| 1345 | tocPtr = &Toc[DiskInfo.last + 1]; |
| 1346 | else if (entry.cdte_track > DiskInfo.last |
| 1347 | || entry.cdte_track < DiskInfo.first) { |
| 1348 | return -EINVAL; |
| 1349 | } else |
| 1350 | tocPtr = &Toc[entry.cdte_track]; |
| 1351 | entry.cdte_adr = tocPtr->ctrl_addr; |
| 1352 | entry.cdte_ctrl = tocPtr->ctrl_addr >> 4; |
| 1353 | if (entry.cdte_format == CDROM_LBA) |
| 1354 | entry.cdte_addr.lba = |
| 1355 | azt_msf2hsg(&tocPtr->diskTime); |
| 1356 | else if (entry.cdte_format == CDROM_MSF) { |
| 1357 | entry.cdte_addr.msf.minute = |
| 1358 | azt_bcd2bin(tocPtr->diskTime.min); |
| 1359 | entry.cdte_addr.msf.second = |
| 1360 | azt_bcd2bin(tocPtr->diskTime.sec); |
| 1361 | entry.cdte_addr.msf.frame = |
| 1362 | azt_bcd2bin(tocPtr->diskTime.frame); |
| 1363 | } else { |
| 1364 | return -EINVAL; |
| 1365 | } |
| 1366 | if (copy_to_user(argp, &entry, sizeof entry)) |
| 1367 | return -EFAULT; |
| 1368 | break; |
| 1369 | case CDROMSUBCHNL: /* Get subchannel info */ |
| 1370 | if (copy_from_user |
| 1371 | (&subchnl, argp, sizeof(struct cdrom_subchnl))) |
| 1372 | return -EFAULT; |
| 1373 | if (aztGetQChannelInfo(&qInfo) < 0) { |
| 1374 | #ifdef AZT_DEBUG |
| 1375 | printk |
| 1376 | ("aztcd: exiting aztcd_ioctl - Error 3 - Command:%x\n", |
| 1377 | cmd); |
| 1378 | #endif |
| 1379 | return -EIO; |
| 1380 | } |
| 1381 | subchnl.cdsc_audiostatus = aztAudioStatus; |
| 1382 | subchnl.cdsc_adr = qInfo.ctrl_addr; |
| 1383 | subchnl.cdsc_ctrl = qInfo.ctrl_addr >> 4; |
| 1384 | subchnl.cdsc_trk = azt_bcd2bin(qInfo.track); |
| 1385 | subchnl.cdsc_ind = azt_bcd2bin(qInfo.pointIndex); |
| 1386 | if (subchnl.cdsc_format == CDROM_LBA) { |
| 1387 | subchnl.cdsc_absaddr.lba = |
| 1388 | azt_msf2hsg(&qInfo.diskTime); |
| 1389 | subchnl.cdsc_reladdr.lba = |
| 1390 | azt_msf2hsg(&qInfo.trackTime); |
| 1391 | } else { /*default */ |
| 1392 | subchnl.cdsc_format = CDROM_MSF; |
| 1393 | subchnl.cdsc_absaddr.msf.minute = |
| 1394 | azt_bcd2bin(qInfo.diskTime.min); |
| 1395 | subchnl.cdsc_absaddr.msf.second = |
| 1396 | azt_bcd2bin(qInfo.diskTime.sec); |
| 1397 | subchnl.cdsc_absaddr.msf.frame = |
| 1398 | azt_bcd2bin(qInfo.diskTime.frame); |
| 1399 | subchnl.cdsc_reladdr.msf.minute = |
| 1400 | azt_bcd2bin(qInfo.trackTime.min); |
| 1401 | subchnl.cdsc_reladdr.msf.second = |
| 1402 | azt_bcd2bin(qInfo.trackTime.sec); |
| 1403 | subchnl.cdsc_reladdr.msf.frame = |
| 1404 | azt_bcd2bin(qInfo.trackTime.frame); |
| 1405 | } |
| 1406 | if (copy_to_user(argp, &subchnl, sizeof(struct cdrom_subchnl))) |
| 1407 | return -EFAULT; |
| 1408 | break; |
| 1409 | case CDROMVOLCTRL: /* Volume control |
| 1410 | * With my Aztech CD268-01A volume control does not work, I can only |
| 1411 | turn the channels on (any value !=0) or off (value==0). Maybe it |
| 1412 | works better with your drive */ |
| 1413 | if (copy_from_user(&volctrl, argp, sizeof(volctrl))) |
| 1414 | return -EFAULT; |
| 1415 | azt_Play.start.min = 0x21; |
| 1416 | azt_Play.start.sec = 0x84; |
| 1417 | azt_Play.start.frame = volctrl.channel0; |
| 1418 | azt_Play.end.min = volctrl.channel1; |
| 1419 | azt_Play.end.sec = volctrl.channel2; |
| 1420 | azt_Play.end.frame = volctrl.channel3; |
| 1421 | sendAztCmd(ACMD_SET_VOLUME, &azt_Play); |
| 1422 | STEN_LOW_WAIT; |
| 1423 | break; |
| 1424 | case CDROMEJECT: |
| 1425 | aztUnlockDoor(); /* Assume user knows what they're doing */ |
| 1426 | /* all drives can at least stop! */ |
| 1427 | if (aztAudioStatus == CDROM_AUDIO_PLAY) { |
| 1428 | if (aztSendCmd(ACMD_STOP)) |
| 1429 | RETURNM("azt_ioctl 10", -1); |
| 1430 | STEN_LOW_WAIT; |
| 1431 | } |
| 1432 | if (aztSendCmd(ACMD_EJECT)) |
| 1433 | RETURNM("azt_ioctl 11", -1); |
| 1434 | STEN_LOW_WAIT; |
| 1435 | aztAudioStatus = CDROM_AUDIO_NO_STATUS; |
| 1436 | break; |
| 1437 | case CDROMEJECT_SW: |
| 1438 | azt_auto_eject = (char) arg; |
| 1439 | break; |
| 1440 | case CDROMRESET: |
| 1441 | outb(ACMD_SOFT_RESET, CMD_PORT); /*send reset */ |
| 1442 | STEN_LOW; |
| 1443 | if (inb(DATA_PORT) != AFL_OP_OK) { /*OP_OK? */ |
| 1444 | printk |
| 1445 | ("aztcd: AZTECH CD-ROM drive does not respond\n"); |
| 1446 | } |
| 1447 | break; |
| 1448 | /*Take care, the following code is not compatible with other CD-ROM drivers, |
| 1449 | use it at your own risk with cdplay.c. Set AZT_PRIVATE_IOCTLS to 0 in aztcd.h, |
| 1450 | if you do not want to use it! |
| 1451 | */ |
| 1452 | #if AZT_PRIVATE_IOCTLS |
| 1453 | case CDROMREADCOOKED: /*read data in mode 1 (2048 Bytes) */ |
| 1454 | case CDROMREADRAW: /*read data in mode 2 (2336 Bytes) */ |
| 1455 | { |
| 1456 | if (copy_from_user(&msf, argp, sizeof msf)) |
| 1457 | return -EFAULT; |
| 1458 | /* convert to bcd */ |
| 1459 | azt_bin2bcd(&msf.cdmsf_min0); |
| 1460 | azt_bin2bcd(&msf.cdmsf_sec0); |
| 1461 | azt_bin2bcd(&msf.cdmsf_frame0); |
| 1462 | msf.cdmsf_min1 = 0; |
| 1463 | msf.cdmsf_sec1 = 0; |
| 1464 | msf.cdmsf_frame1 = 1; /*read only one frame */ |
| 1465 | azt_Play.start.min = msf.cdmsf_min0; |
| 1466 | azt_Play.start.sec = msf.cdmsf_sec0; |
| 1467 | azt_Play.start.frame = msf.cdmsf_frame0; |
| 1468 | azt_Play.end.min = msf.cdmsf_min1; |
| 1469 | azt_Play.end.sec = msf.cdmsf_sec1; |
| 1470 | azt_Play.end.frame = msf.cdmsf_frame1; |
| 1471 | if (cmd == CDROMREADRAW) { |
| 1472 | if (DiskInfo.xa) { |
| 1473 | return -1; /*XA Disks can't be read raw */ |
| 1474 | } else { |
| 1475 | if (sendAztCmd(ACMD_PLAY_READ_RAW, &azt_Play)) |
| 1476 | return -1; |
| 1477 | DTEN_LOW; |
| 1478 | insb(DATA_PORT, buf, CD_FRAMESIZE_RAW); |
| 1479 | if (copy_to_user(argp, &buf, CD_FRAMESIZE_RAW)) |
| 1480 | return -EFAULT; |
| 1481 | } |
| 1482 | } else |
| 1483 | /*CDROMREADCOOKED*/ { |
| 1484 | if (sendAztCmd(ACMD_PLAY_READ, &azt_Play)) |
| 1485 | return -1; |
| 1486 | DTEN_LOW; |
| 1487 | insb(DATA_PORT, buf, CD_FRAMESIZE); |
| 1488 | if (copy_to_user(argp, &buf, CD_FRAMESIZE)) |
| 1489 | return -EFAULT; |
| 1490 | } |
| 1491 | } |
| 1492 | break; |
| 1493 | case CDROMSEEK: /*seek msf address */ |
| 1494 | if (copy_from_user(&msf, argp, sizeof msf)) |
| 1495 | return -EFAULT; |
| 1496 | /* convert to bcd */ |
| 1497 | azt_bin2bcd(&msf.cdmsf_min0); |
| 1498 | azt_bin2bcd(&msf.cdmsf_sec0); |
| 1499 | azt_bin2bcd(&msf.cdmsf_frame0); |
| 1500 | azt_Play.start.min = msf.cdmsf_min0; |
| 1501 | azt_Play.start.sec = msf.cdmsf_sec0; |
| 1502 | azt_Play.start.frame = msf.cdmsf_frame0; |
| 1503 | if (aztSeek(&azt_Play)) |
| 1504 | return -1; |
| 1505 | break; |
| 1506 | #endif /*end of incompatible code */ |
| 1507 | case CDROMREADMODE1: /*set read data in mode 1 */ |
| 1508 | return aztSetDiskType(AZT_MODE_1); |
| 1509 | case CDROMREADMODE2: /*set read data in mode 2 */ |
| 1510 | return aztSetDiskType(AZT_MODE_2); |
| 1511 | default: |
| 1512 | return -EINVAL; |
| 1513 | } |
| 1514 | #ifdef AZT_DEBUG |
| 1515 | printk("aztcd: exiting aztcd_ioctl Command:%x Time:%li\n", cmd, |
| 1516 | jiffies); |
| 1517 | #endif |
| 1518 | return 0; |
| 1519 | } |
| 1520 | |
| 1521 | /* |
| 1522 | * Take care of the different block sizes between cdrom and Linux. |
| 1523 | * When Linux gets variable block sizes this will probably go away. |
| 1524 | */ |
| 1525 | static void azt_transfer(void) |
| 1526 | { |
| 1527 | #ifdef AZT_TEST |
| 1528 | printk("aztcd: executing azt_transfer Time:%li\n", jiffies); |
| 1529 | #endif |
| 1530 | if (!current_valid()) |
| 1531 | return; |
| 1532 | |
| 1533 | while (CURRENT->nr_sectors) { |
| 1534 | int bn = CURRENT->sector / 4; |
| 1535 | int i; |
| 1536 | for (i = 0; i < AZT_BUF_SIZ && azt_buf_bn[i] != bn; ++i); |
| 1537 | if (i < AZT_BUF_SIZ) { |
| 1538 | int offs = (i * 4 + (CURRENT->sector & 3)) * 512; |
| 1539 | int nr_sectors = 4 - (CURRENT->sector & 3); |
| 1540 | if (azt_buf_out != i) { |
| 1541 | azt_buf_out = i; |
| 1542 | if (azt_buf_bn[i] != bn) { |
| 1543 | azt_buf_out = -1; |
| 1544 | continue; |
| 1545 | } |
| 1546 | } |
| 1547 | if (nr_sectors > CURRENT->nr_sectors) |
| 1548 | nr_sectors = CURRENT->nr_sectors; |
| 1549 | memcpy(CURRENT->buffer, azt_buf + offs, |
| 1550 | nr_sectors * 512); |
| 1551 | CURRENT->nr_sectors -= nr_sectors; |
| 1552 | CURRENT->sector += nr_sectors; |
| 1553 | CURRENT->buffer += nr_sectors * 512; |
| 1554 | } else { |
| 1555 | azt_buf_out = -1; |
| 1556 | break; |
| 1557 | } |
| 1558 | } |
| 1559 | } |
| 1560 | |
| 1561 | static void do_aztcd_request(request_queue_t * q) |
| 1562 | { |
| 1563 | #ifdef AZT_TEST |
| 1564 | printk(" do_aztcd_request(%ld+%ld) Time:%li\n", CURRENT->sector, |
| 1565 | CURRENT->nr_sectors, jiffies); |
| 1566 | #endif |
| 1567 | if (DiskInfo.audio) { |
| 1568 | printk("aztcd: Error, tried to mount an Audio CD\n"); |
| 1569 | end_request(CURRENT, 0); |
| 1570 | return; |
| 1571 | } |
| 1572 | azt_transfer_is_active = 1; |
| 1573 | while (current_valid()) { |
| 1574 | azt_transfer(); |
| 1575 | if (CURRENT->nr_sectors == 0) { |
| 1576 | end_request(CURRENT, 1); |
| 1577 | } else { |
| 1578 | azt_buf_out = -1; /* Want to read a block not in buffer */ |
| 1579 | if (azt_state == AZT_S_IDLE) { |
| 1580 | if ((!aztTocUpToDate) || aztDiskChanged) { |
| 1581 | if (aztUpdateToc() < 0) { |
| 1582 | while (current_valid()) |
| 1583 | end_request(CURRENT, 0); |
| 1584 | break; |
| 1585 | } |
| 1586 | } |
| 1587 | azt_state = AZT_S_START; |
| 1588 | AztTries = 5; |
| 1589 | SET_TIMER(azt_poll, HZ / 100); |
| 1590 | } |
| 1591 | break; |
| 1592 | } |
| 1593 | } |
| 1594 | azt_transfer_is_active = 0; |
| 1595 | #ifdef AZT_TEST2 |
| 1596 | printk |
| 1597 | ("azt_next_bn:%x azt_buf_in:%x azt_buf_out:%x azt_buf_bn:%x\n", |
| 1598 | azt_next_bn, azt_buf_in, azt_buf_out, azt_buf_bn[azt_buf_in]); |
| 1599 | printk(" do_aztcd_request ends Time:%li\n", jiffies); |
| 1600 | #endif |
| 1601 | } |
| 1602 | |
| 1603 | |
| 1604 | static void azt_invalidate_buffers(void) |
| 1605 | { |
| 1606 | int i; |
| 1607 | |
| 1608 | #ifdef AZT_DEBUG |
| 1609 | printk("aztcd: executing azt_invalidate_buffers\n"); |
| 1610 | #endif |
| 1611 | for (i = 0; i < AZT_BUF_SIZ; ++i) |
| 1612 | azt_buf_bn[i] = -1; |
| 1613 | azt_buf_out = -1; |
| 1614 | } |
| 1615 | |
| 1616 | /* |
| 1617 | * Open the device special file. Check that a disk is in. |
| 1618 | */ |
| 1619 | static int aztcd_open(struct inode *ip, struct file *fp) |
| 1620 | { |
| 1621 | int st; |
| 1622 | |
| 1623 | #ifdef AZT_DEBUG |
| 1624 | printk("aztcd: starting aztcd_open\n"); |
| 1625 | #endif |
| 1626 | |
| 1627 | if (aztPresent == 0) |
| 1628 | return -ENXIO; /* no hardware */ |
| 1629 | |
| 1630 | if (!azt_open_count && azt_state == AZT_S_IDLE) { |
| 1631 | azt_invalidate_buffers(); |
| 1632 | |
| 1633 | st = getAztStatus(); /* check drive status */ |
| 1634 | if (st == -1) |
| 1635 | goto err_out; /* drive doesn't respond */ |
| 1636 | |
| 1637 | if (st & AST_DOOR_OPEN) { /* close door, then get the status again. */ |
| 1638 | printk("aztcd: Door Open?\n"); |
| 1639 | aztCloseDoor(); |
| 1640 | st = getAztStatus(); |
| 1641 | } |
| 1642 | |
| 1643 | if ((st & AST_NOT_READY) || (st & AST_DSK_CHG)) { /*no disk in drive or changed */ |
| 1644 | printk |
| 1645 | ("aztcd: Disk Changed or No Disk in Drive?\n"); |
| 1646 | aztTocUpToDate = 0; |
| 1647 | } |
| 1648 | if (aztUpdateToc()) |
| 1649 | goto err_out; |
| 1650 | |
| 1651 | } |
| 1652 | ++azt_open_count; |
| 1653 | aztLockDoor(); |
| 1654 | |
| 1655 | #ifdef AZT_DEBUG |
| 1656 | printk("aztcd: exiting aztcd_open\n"); |
| 1657 | #endif |
| 1658 | return 0; |
| 1659 | |
| 1660 | err_out: |
| 1661 | return -EIO; |
| 1662 | } |
| 1663 | |
| 1664 | |
| 1665 | /* |
| 1666 | * On close, we flush all azt blocks from the buffer cache. |
| 1667 | */ |
| 1668 | static int aztcd_release(struct inode *inode, struct file *file) |
| 1669 | { |
| 1670 | #ifdef AZT_DEBUG |
| 1671 | printk("aztcd: executing aztcd_release\n"); |
| 1672 | printk("inode: %p, device: %s file: %p\n", inode, |
| 1673 | inode->i_bdev->bd_disk->disk_name, file); |
| 1674 | #endif |
| 1675 | if (!--azt_open_count) { |
| 1676 | azt_invalidate_buffers(); |
| 1677 | aztUnlockDoor(); |
| 1678 | if (azt_auto_eject) |
| 1679 | aztSendCmd(ACMD_EJECT); |
| 1680 | CLEAR_TIMER; |
| 1681 | } |
| 1682 | return 0; |
| 1683 | } |
| 1684 | |
| 1685 | static struct gendisk *azt_disk; |
| 1686 | |
| 1687 | /* |
| 1688 | * Test for presence of drive and initialize it. Called at boot time. |
| 1689 | */ |
| 1690 | |
| 1691 | static int __init aztcd_init(void) |
| 1692 | { |
| 1693 | long int count, max_count; |
| 1694 | unsigned char result[50]; |
| 1695 | int st; |
| 1696 | void* status = NULL; |
| 1697 | int i = 0; |
| 1698 | int ret = 0; |
| 1699 | |
| 1700 | if (azt_port == 0) { |
| 1701 | printk(KERN_INFO "aztcd: no Aztech CD-ROM Initialization"); |
| 1702 | return -EIO; |
| 1703 | } |
| 1704 | |
| 1705 | printk(KERN_INFO "aztcd: AZTECH, ORCHID, OKANO, WEARNES, TXC, CyDROM " |
| 1706 | "CD-ROM Driver\n"); |
| 1707 | printk(KERN_INFO "aztcd: (C) 1994-98 W.Zimmermann\n"); |
| 1708 | if (azt_port == -1) { |
| 1709 | printk |
| 1710 | ("aztcd: DriverVersion=%s For IDE/ATAPI-drives use ide-cd.c\n", |
| 1711 | AZT_VERSION); |
| 1712 | } else |
| 1713 | printk |
| 1714 | ("aztcd: DriverVersion=%s BaseAddress=0x%x For IDE/ATAPI-drives use ide-cd.c\n", |
| 1715 | AZT_VERSION, azt_port); |
| 1716 | printk(KERN_INFO "aztcd: If you have problems, read /usr/src/linux/" |
| 1717 | "Documentation/cdrom/aztcd\n"); |
| 1718 | |
| 1719 | |
| 1720 | #ifdef AZT_SW32 /*CDROM connected to Soundwave32 card */ |
| 1721 | if ((0xFF00 & inw(AZT_SW32_ID_REG)) != 0x4500) { |
| 1722 | printk |
| 1723 | ("aztcd: no Soundwave32 card detected at base:%x init:%x config:%x id:%x\n", |
| 1724 | AZT_SW32_BASE_ADDR, AZT_SW32_INIT, |
| 1725 | AZT_SW32_CONFIG_REG, AZT_SW32_ID_REG); |
| 1726 | return -EIO; |
| 1727 | } else { |
| 1728 | printk(KERN_INFO |
| 1729 | "aztcd: Soundwave32 card detected at %x Version %x\n", |
| 1730 | AZT_SW32_BASE_ADDR, inw(AZT_SW32_ID_REG)); |
| 1731 | outw(AZT_SW32_INIT, AZT_SW32_CONFIG_REG); |
| 1732 | for (count = 0; count < 10000; count++); /*delay a bit */ |
| 1733 | } |
| 1734 | #endif |
| 1735 | |
| 1736 | /* check for presence of drive */ |
| 1737 | |
| 1738 | if (azt_port == -1) { /* autoprobing for proprietary interface */ |
| 1739 | for (i = 0; (azt_port_auto[i] != 0) && (i < 16); i++) { |
| 1740 | azt_port = azt_port_auto[i]; |
| 1741 | printk(KERN_INFO "aztcd: Autoprobing BaseAddress=0x%x" |
| 1742 | "\n", azt_port); |
| 1743 | /*proprietary interfaces need 4 bytes */ |
| 1744 | if (!request_region(azt_port, 4, "aztcd")) { |
| 1745 | continue; |
| 1746 | } |
| 1747 | outb(POLLED, MODE_PORT); |
| 1748 | inb(CMD_PORT); |
| 1749 | inb(CMD_PORT); |
| 1750 | outb(ACMD_GET_VERSION, CMD_PORT); /*Try to get version info */ |
| 1751 | |
| 1752 | aztTimeOutCount = 0; |
| 1753 | do { |
| 1754 | aztIndatum = inb(STATUS_PORT); |
| 1755 | aztTimeOutCount++; |
| 1756 | if (aztTimeOutCount >= AZT_FAST_TIMEOUT) |
| 1757 | break; |
| 1758 | } while (aztIndatum & AFL_STATUS); |
| 1759 | if (inb(DATA_PORT) == AFL_OP_OK) { /* OK drive found */ |
| 1760 | break; |
| 1761 | } |
| 1762 | else { /* Drive not found on this port - try next one */ |
| 1763 | release_region(azt_port, 4); |
| 1764 | } |
| 1765 | } |
Eric Sesterhenn | d93c2ef | 2006-04-10 22:54:37 -0700 | [diff] [blame^] | 1766 | if ((i == 16) || (azt_port_auto[i] == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | printk(KERN_INFO "aztcd: no AZTECH CD-ROM drive found\n"); |
| 1768 | return -EIO; |
| 1769 | } |
| 1770 | } else { /* no autoprobing */ |
| 1771 | if ((azt_port == 0x1f0) || (azt_port == 0x170)) |
| 1772 | status = request_region(azt_port, 8, "aztcd"); /*IDE-interfaces need 8 bytes */ |
| 1773 | else |
| 1774 | status = request_region(azt_port, 4, "aztcd"); /*proprietary interfaces need 4 bytes */ |
| 1775 | if (!status) { |
| 1776 | printk(KERN_WARNING "aztcd: conflict, I/O port (%X) " |
| 1777 | "already used\n", azt_port); |
| 1778 | return -EIO; |
| 1779 | } |
| 1780 | |
| 1781 | if ((azt_port == 0x1f0) || (azt_port == 0x170)) |
| 1782 | SWITCH_IDE_SLAVE; /*switch IDE interface to slave configuration */ |
| 1783 | |
| 1784 | outb(POLLED, MODE_PORT); |
| 1785 | inb(CMD_PORT); |
| 1786 | inb(CMD_PORT); |
| 1787 | outb(ACMD_GET_VERSION, CMD_PORT); /*Try to get version info */ |
| 1788 | |
| 1789 | aztTimeOutCount = 0; |
| 1790 | do { |
| 1791 | aztIndatum = inb(STATUS_PORT); |
| 1792 | aztTimeOutCount++; |
| 1793 | if (aztTimeOutCount >= AZT_FAST_TIMEOUT) |
| 1794 | break; |
| 1795 | } while (aztIndatum & AFL_STATUS); |
| 1796 | |
| 1797 | if (inb(DATA_PORT) != AFL_OP_OK) { /*OP_OK? If not, reset and try again */ |
| 1798 | #ifndef MODULE |
| 1799 | if (azt_cont != 0x79) { |
| 1800 | printk(KERN_WARNING "aztcd: no AZTECH CD-ROM " |
| 1801 | "drive found-Try boot parameter aztcd=" |
| 1802 | "<BaseAddress>,0x79\n"); |
| 1803 | ret = -EIO; |
| 1804 | goto err_out; |
| 1805 | } |
| 1806 | #else |
| 1807 | if (0) { |
| 1808 | } |
| 1809 | #endif |
| 1810 | else { |
| 1811 | printk(KERN_INFO "aztcd: drive reset - " |
| 1812 | "please wait\n"); |
| 1813 | for (count = 0; count < 50; count++) { |
| 1814 | inb(STATUS_PORT); /*removing all data from earlier tries */ |
| 1815 | inb(DATA_PORT); |
| 1816 | } |
| 1817 | outb(POLLED, MODE_PORT); |
| 1818 | inb(CMD_PORT); |
| 1819 | inb(CMD_PORT); |
| 1820 | getAztStatus(); /*trap errors */ |
| 1821 | outb(ACMD_SOFT_RESET, CMD_PORT); /*send reset */ |
| 1822 | STEN_LOW; |
| 1823 | if (inb(DATA_PORT) != AFL_OP_OK) { /*OP_OK? */ |
| 1824 | printk(KERN_WARNING "aztcd: no AZTECH " |
| 1825 | "CD-ROM drive found\n"); |
| 1826 | ret = -EIO; |
| 1827 | goto err_out; |
| 1828 | } |
| 1829 | |
| 1830 | for (count = 0; count < AZT_TIMEOUT; |
| 1831 | count++) |
| 1832 | barrier(); /* Stop gcc 2.96 being smart */ |
| 1833 | /* use udelay(), damnit -- AV */ |
| 1834 | |
| 1835 | if ((st = getAztStatus()) == -1) { |
| 1836 | printk(KERN_WARNING "aztcd: Drive Status" |
| 1837 | " Error Status=%x\n", st); |
| 1838 | ret = -EIO; |
| 1839 | goto err_out; |
| 1840 | } |
| 1841 | #ifdef AZT_DEBUG |
| 1842 | printk(KERN_DEBUG "aztcd: Status = %x\n", st); |
| 1843 | #endif |
| 1844 | outb(POLLED, MODE_PORT); |
| 1845 | inb(CMD_PORT); |
| 1846 | inb(CMD_PORT); |
| 1847 | outb(ACMD_GET_VERSION, CMD_PORT); /*GetVersion */ |
| 1848 | STEN_LOW; |
| 1849 | OP_OK; |
| 1850 | } |
| 1851 | } |
| 1852 | } |
| 1853 | |
| 1854 | azt_init_end = 1; |
| 1855 | STEN_LOW; |
| 1856 | result[0] = inb(DATA_PORT); /*reading in a null byte??? */ |
| 1857 | for (count = 1; count < 50; count++) { /*Reading version string */ |
| 1858 | aztTimeOutCount = 0; /*here we must implement STEN_LOW differently */ |
| 1859 | do { |
| 1860 | aztIndatum = inb(STATUS_PORT); /*because we want to exit by timeout */ |
| 1861 | aztTimeOutCount++; |
| 1862 | if (aztTimeOutCount >= AZT_FAST_TIMEOUT) |
| 1863 | break; |
| 1864 | } while (aztIndatum & AFL_STATUS); |
| 1865 | if (aztTimeOutCount >= AZT_FAST_TIMEOUT) |
| 1866 | break; /*all chars read? */ |
| 1867 | result[count] = inb(DATA_PORT); |
| 1868 | } |
| 1869 | if (count > 30) |
| 1870 | max_count = 30; /*print max.30 chars of the version string */ |
| 1871 | else |
| 1872 | max_count = count; |
| 1873 | printk(KERN_INFO "aztcd: FirmwareVersion="); |
| 1874 | for (count = 1; count < max_count; count++) |
| 1875 | printk("%c", result[count]); |
| 1876 | printk("<<>> "); |
| 1877 | |
| 1878 | if ((result[1] == 'A') && (result[2] == 'Z') && (result[3] == 'T')) { |
| 1879 | printk("AZTECH drive detected\n"); |
| 1880 | /*AZTECH*/} |
| 1881 | else if ((result[2] == 'C') && (result[3] == 'D') |
| 1882 | && (result[4] == 'D')) { |
| 1883 | printk("ORCHID or WEARNES drive detected\n"); /*ORCHID or WEARNES */ |
| 1884 | } else if ((result[1] == 0x03) && (result[2] == '5')) { |
| 1885 | printk("TXC or CyCDROM drive detected\n"); /*Conrad TXC, CyCDROM */ |
| 1886 | } else { /*OTHERS or none */ |
| 1887 | printk("\nunknown drive or firmware version detected\n"); |
| 1888 | printk |
| 1889 | ("aztcd may not run stable, if you want to try anyhow,\n"); |
| 1890 | printk("boot with: aztcd=<BaseAddress>,0x79\n"); |
| 1891 | if ((azt_cont != 0x79)) { |
| 1892 | printk("aztcd: FirmwareVersion="); |
| 1893 | for (count = 1; count < 5; count++) |
| 1894 | printk("%c", result[count]); |
| 1895 | printk("<<>> "); |
| 1896 | printk("Aborted\n"); |
| 1897 | ret = -EIO; |
| 1898 | goto err_out; |
| 1899 | } |
| 1900 | } |
| 1901 | azt_disk = alloc_disk(1); |
| 1902 | if (!azt_disk) |
| 1903 | goto err_out; |
| 1904 | |
| 1905 | if (register_blkdev(MAJOR_NR, "aztcd")) { |
| 1906 | ret = -EIO; |
| 1907 | goto err_out2; |
| 1908 | } |
| 1909 | |
| 1910 | azt_queue = blk_init_queue(do_aztcd_request, &aztSpin); |
| 1911 | if (!azt_queue) { |
| 1912 | ret = -ENOMEM; |
| 1913 | goto err_out3; |
| 1914 | } |
| 1915 | |
| 1916 | blk_queue_hardsect_size(azt_queue, 2048); |
| 1917 | azt_disk->major = MAJOR_NR; |
| 1918 | azt_disk->first_minor = 0; |
| 1919 | azt_disk->fops = &azt_fops; |
| 1920 | sprintf(azt_disk->disk_name, "aztcd"); |
| 1921 | sprintf(azt_disk->devfs_name, "aztcd"); |
| 1922 | azt_disk->queue = azt_queue; |
| 1923 | add_disk(azt_disk); |
| 1924 | azt_invalidate_buffers(); |
| 1925 | aztPresent = 1; |
| 1926 | aztCloseDoor(); |
| 1927 | return 0; |
| 1928 | err_out3: |
| 1929 | unregister_blkdev(MAJOR_NR, "aztcd"); |
| 1930 | err_out2: |
| 1931 | put_disk(azt_disk); |
| 1932 | err_out: |
| 1933 | if ((azt_port == 0x1f0) || (azt_port == 0x170)) { |
| 1934 | SWITCH_IDE_MASTER; |
| 1935 | release_region(azt_port, 8); /*IDE-interface */ |
| 1936 | } else |
| 1937 | release_region(azt_port, 4); /*proprietary interface */ |
| 1938 | return ret; |
| 1939 | |
| 1940 | } |
| 1941 | |
| 1942 | static void __exit aztcd_exit(void) |
| 1943 | { |
| 1944 | del_gendisk(azt_disk); |
| 1945 | put_disk(azt_disk); |
| 1946 | if ((unregister_blkdev(MAJOR_NR, "aztcd") == -EINVAL)) { |
| 1947 | printk("What's that: can't unregister aztcd\n"); |
| 1948 | return; |
| 1949 | } |
| 1950 | blk_cleanup_queue(azt_queue); |
| 1951 | if ((azt_port == 0x1f0) || (azt_port == 0x170)) { |
| 1952 | SWITCH_IDE_MASTER; |
| 1953 | release_region(azt_port, 8); /*IDE-interface */ |
| 1954 | } else |
| 1955 | release_region(azt_port, 4); /*proprietary interface */ |
| 1956 | printk(KERN_INFO "aztcd module released.\n"); |
| 1957 | } |
| 1958 | |
| 1959 | module_init(aztcd_init); |
| 1960 | module_exit(aztcd_exit); |
| 1961 | |
| 1962 | /*########################################################################## |
| 1963 | Aztcd State Machine: Controls Drive Operating State |
| 1964 | ########################################################################## |
| 1965 | */ |
| 1966 | static void azt_poll(void) |
| 1967 | { |
| 1968 | int st = 0; |
| 1969 | int loop_ctl = 1; |
| 1970 | int skip = 0; |
| 1971 | |
| 1972 | if (azt_error) { |
| 1973 | if (aztSendCmd(ACMD_GET_ERROR)) |
| 1974 | RETURN("azt_poll 1"); |
| 1975 | STEN_LOW; |
| 1976 | azt_error = inb(DATA_PORT) & 0xFF; |
| 1977 | printk("aztcd: I/O error 0x%02x\n", azt_error); |
| 1978 | azt_invalidate_buffers(); |
| 1979 | #ifdef WARN_IF_READ_FAILURE |
| 1980 | if (AztTries == 5) |
| 1981 | printk |
| 1982 | ("aztcd: Read of Block %d Failed - Maybe Audio Disk?\n", |
| 1983 | azt_next_bn); |
| 1984 | #endif |
| 1985 | if (!AztTries--) { |
| 1986 | printk |
| 1987 | ("aztcd: Read of Block %d Failed, Maybe Audio Disk? Giving up\n", |
| 1988 | azt_next_bn); |
| 1989 | if (azt_transfer_is_active) { |
| 1990 | AztTries = 0; |
| 1991 | loop_ctl = 0; |
| 1992 | } |
| 1993 | if (current_valid()) |
| 1994 | end_request(CURRENT, 0); |
| 1995 | AztTries = 5; |
| 1996 | } |
| 1997 | azt_error = 0; |
| 1998 | azt_state = AZT_S_STOP; |
| 1999 | } |
| 2000 | |
| 2001 | while (loop_ctl) { |
| 2002 | loop_ctl = 0; /* each case must flip this back to 1 if we want |
| 2003 | to come back up here */ |
| 2004 | switch (azt_state) { |
| 2005 | |
| 2006 | case AZT_S_IDLE: |
| 2007 | #ifdef AZT_TEST3 |
| 2008 | if (azt_state != azt_state_old) { |
| 2009 | azt_state_old = azt_state; |
| 2010 | printk("AZT_S_IDLE\n"); |
| 2011 | } |
| 2012 | #endif |
| 2013 | return; |
| 2014 | |
| 2015 | case AZT_S_START: |
| 2016 | #ifdef AZT_TEST3 |
| 2017 | if (azt_state != azt_state_old) { |
| 2018 | azt_state_old = azt_state; |
| 2019 | printk("AZT_S_START\n"); |
| 2020 | } |
| 2021 | #endif |
| 2022 | if (aztSendCmd(ACMD_GET_STATUS)) |
| 2023 | RETURN("azt_poll 2"); /*result will be checked by aztStatus() */ |
| 2024 | azt_state = |
| 2025 | azt_mode == 1 ? AZT_S_READ : AZT_S_MODE; |
| 2026 | AztTimeout = 3000; |
| 2027 | break; |
| 2028 | |
| 2029 | case AZT_S_MODE: |
| 2030 | #ifdef AZT_TEST3 |
| 2031 | if (azt_state != azt_state_old) { |
| 2032 | azt_state_old = azt_state; |
| 2033 | printk("AZT_S_MODE\n"); |
| 2034 | } |
| 2035 | #endif |
| 2036 | if (!skip) { |
| 2037 | if ((st = aztStatus()) != -1) { |
| 2038 | if ((st & AST_DSK_CHG) |
| 2039 | || (st & AST_NOT_READY)) { |
| 2040 | aztDiskChanged = 1; |
| 2041 | aztTocUpToDate = 0; |
| 2042 | azt_invalidate_buffers(); |
| 2043 | end_request(CURRENT, 0); |
| 2044 | printk |
| 2045 | ("aztcd: Disk Changed or Not Ready 1 - Unmount Disk!\n"); |
| 2046 | } |
| 2047 | } else |
| 2048 | break; |
| 2049 | } |
| 2050 | skip = 0; |
| 2051 | |
| 2052 | if ((st & AST_DOOR_OPEN) || (st & AST_NOT_READY)) { |
| 2053 | aztDiskChanged = 1; |
| 2054 | aztTocUpToDate = 0; |
| 2055 | printk |
| 2056 | ("aztcd: Disk Changed or Not Ready 2 - Unmount Disk!\n"); |
| 2057 | end_request(CURRENT, 0); |
| 2058 | printk((st & AST_DOOR_OPEN) ? |
| 2059 | "aztcd: door open\n" : |
| 2060 | "aztcd: disk removed\n"); |
| 2061 | if (azt_transfer_is_active) { |
| 2062 | azt_state = AZT_S_START; |
| 2063 | loop_ctl = 1; /* goto immediately */ |
| 2064 | break; |
| 2065 | } |
| 2066 | azt_state = AZT_S_IDLE; |
| 2067 | while (current_valid()) |
| 2068 | end_request(CURRENT, 0); |
| 2069 | return; |
| 2070 | } |
| 2071 | |
| 2072 | /* if (aztSendCmd(ACMD_SET_MODE)) RETURN("azt_poll 3"); |
| 2073 | outb(0x01, DATA_PORT); |
| 2074 | PA_OK; |
| 2075 | STEN_LOW; |
| 2076 | */ |
| 2077 | if (aztSendCmd(ACMD_GET_STATUS)) |
| 2078 | RETURN("azt_poll 4"); |
| 2079 | STEN_LOW; |
| 2080 | azt_mode = 1; |
| 2081 | azt_state = AZT_S_READ; |
| 2082 | AztTimeout = 3000; |
| 2083 | |
| 2084 | break; |
| 2085 | |
| 2086 | |
| 2087 | case AZT_S_READ: |
| 2088 | #ifdef AZT_TEST3 |
| 2089 | if (azt_state != azt_state_old) { |
| 2090 | azt_state_old = azt_state; |
| 2091 | printk("AZT_S_READ\n"); |
| 2092 | } |
| 2093 | #endif |
| 2094 | if (!skip) { |
| 2095 | if ((st = aztStatus()) != -1) { |
| 2096 | if ((st & AST_DSK_CHG) |
| 2097 | || (st & AST_NOT_READY)) { |
| 2098 | aztDiskChanged = 1; |
| 2099 | aztTocUpToDate = 0; |
| 2100 | azt_invalidate_buffers(); |
| 2101 | printk |
| 2102 | ("aztcd: Disk Changed or Not Ready 3 - Unmount Disk!\n"); |
| 2103 | end_request(CURRENT, 0); |
| 2104 | } |
| 2105 | } else |
| 2106 | break; |
| 2107 | } |
| 2108 | |
| 2109 | skip = 0; |
| 2110 | if ((st & AST_DOOR_OPEN) || (st & AST_NOT_READY)) { |
| 2111 | aztDiskChanged = 1; |
| 2112 | aztTocUpToDate = 0; |
| 2113 | printk((st & AST_DOOR_OPEN) ? |
| 2114 | "aztcd: door open\n" : |
| 2115 | "aztcd: disk removed\n"); |
| 2116 | if (azt_transfer_is_active) { |
| 2117 | azt_state = AZT_S_START; |
| 2118 | loop_ctl = 1; |
| 2119 | break; |
| 2120 | } |
| 2121 | azt_state = AZT_S_IDLE; |
| 2122 | while (current_valid()) |
| 2123 | end_request(CURRENT, 0); |
| 2124 | return; |
| 2125 | } |
| 2126 | |
| 2127 | if (current_valid()) { |
| 2128 | struct azt_Play_msf msf; |
| 2129 | int i; |
| 2130 | azt_next_bn = CURRENT->sector / 4; |
| 2131 | azt_hsg2msf(azt_next_bn, &msf.start); |
| 2132 | i = 0; |
| 2133 | /* find out in which track we are */ |
| 2134 | while (azt_msf2hsg(&msf.start) > |
| 2135 | azt_msf2hsg(&Toc[++i].trackTime)) { |
| 2136 | }; |
| 2137 | if (azt_msf2hsg(&msf.start) < |
| 2138 | azt_msf2hsg(&Toc[i].trackTime) - |
| 2139 | AZT_BUF_SIZ) { |
| 2140 | azt_read_count = AZT_BUF_SIZ; /*fast, because we read ahead */ |
| 2141 | /*azt_read_count=CURRENT->nr_sectors; slow, no read ahead */ |
| 2142 | } else /* don't read beyond end of track */ |
| 2143 | #if AZT_MULTISESSION |
| 2144 | { |
| 2145 | azt_read_count = |
| 2146 | (azt_msf2hsg(&Toc[i].trackTime) |
| 2147 | / 4) * 4 - |
| 2148 | azt_msf2hsg(&msf.start); |
| 2149 | if (azt_read_count < 0) |
| 2150 | azt_read_count = 0; |
| 2151 | if (azt_read_count > AZT_BUF_SIZ) |
| 2152 | azt_read_count = |
| 2153 | AZT_BUF_SIZ; |
| 2154 | printk |
| 2155 | ("aztcd: warning - trying to read beyond end of track\n"); |
| 2156 | /* printk("%i %i %li %li\n",i,azt_read_count,azt_msf2hsg(&msf.start),azt_msf2hsg(&Toc[i].trackTime)); |
| 2157 | */ } |
| 2158 | #else |
| 2159 | { |
| 2160 | azt_read_count = AZT_BUF_SIZ; |
| 2161 | } |
| 2162 | #endif |
| 2163 | msf.end.min = 0; |
| 2164 | msf.end.sec = 0; |
| 2165 | msf.end.frame = azt_read_count; /*Mitsumi here reads 0xffffff sectors */ |
| 2166 | #ifdef AZT_TEST3 |
| 2167 | printk |
| 2168 | ("---reading msf-address %x:%x:%x %x:%x:%x\n", |
| 2169 | msf.start.min, msf.start.sec, |
| 2170 | msf.start.frame, msf.end.min, |
| 2171 | msf.end.sec, msf.end.frame); |
| 2172 | printk |
| 2173 | ("azt_next_bn:%x azt_buf_in:%x azt_buf_out:%x azt_buf_bn:%x\n", |
| 2174 | azt_next_bn, azt_buf_in, azt_buf_out, |
| 2175 | azt_buf_bn[azt_buf_in]); |
| 2176 | #endif |
| 2177 | if (azt_read_mode == AZT_MODE_2) { |
| 2178 | sendAztCmd(ACMD_PLAY_READ_RAW, &msf); /*XA disks in raw mode */ |
| 2179 | } else { |
| 2180 | sendAztCmd(ACMD_PLAY_READ, &msf); /*others in cooked mode */ |
| 2181 | } |
| 2182 | azt_state = AZT_S_DATA; |
| 2183 | AztTimeout = READ_TIMEOUT; |
| 2184 | } else { |
| 2185 | azt_state = AZT_S_STOP; |
| 2186 | loop_ctl = 1; |
| 2187 | break; |
| 2188 | } |
| 2189 | |
| 2190 | break; |
| 2191 | |
| 2192 | |
| 2193 | case AZT_S_DATA: |
| 2194 | #ifdef AZT_TEST3 |
| 2195 | if (azt_state != azt_state_old) { |
| 2196 | azt_state_old = azt_state; |
| 2197 | printk("AZT_S_DATA\n"); |
| 2198 | } |
| 2199 | #endif |
| 2200 | |
| 2201 | st = inb(STATUS_PORT) & AFL_STATUSorDATA; |
| 2202 | |
| 2203 | switch (st) { |
| 2204 | |
| 2205 | case AFL_DATA: |
| 2206 | #ifdef AZT_TEST3 |
| 2207 | if (st != azt_st_old) { |
| 2208 | azt_st_old = st; |
| 2209 | printk("---AFL_DATA st:%x\n", st); |
| 2210 | } |
| 2211 | #endif |
| 2212 | if (!AztTries--) { |
| 2213 | printk |
| 2214 | ("aztcd: Read of Block %d Failed, Maybe Audio Disk ? Giving up\n", |
| 2215 | azt_next_bn); |
| 2216 | if (azt_transfer_is_active) { |
| 2217 | AztTries = 0; |
| 2218 | break; |
| 2219 | } |
| 2220 | if (current_valid()) |
| 2221 | end_request(CURRENT, 0); |
| 2222 | AztTries = 5; |
| 2223 | } |
| 2224 | azt_state = AZT_S_START; |
| 2225 | AztTimeout = READ_TIMEOUT; |
| 2226 | loop_ctl = 1; |
| 2227 | break; |
| 2228 | |
| 2229 | case AFL_STATUSorDATA: |
| 2230 | #ifdef AZT_TEST3 |
| 2231 | if (st != azt_st_old) { |
| 2232 | azt_st_old = st; |
| 2233 | printk |
| 2234 | ("---AFL_STATUSorDATA st:%x\n", |
| 2235 | st); |
| 2236 | } |
| 2237 | #endif |
| 2238 | break; |
| 2239 | |
| 2240 | default: |
| 2241 | #ifdef AZT_TEST3 |
| 2242 | if (st != azt_st_old) { |
| 2243 | azt_st_old = st; |
| 2244 | printk("---default: st:%x\n", st); |
| 2245 | } |
| 2246 | #endif |
| 2247 | AztTries = 5; |
| 2248 | if (!current_valid() && azt_buf_in == azt_buf_out) { |
| 2249 | azt_state = AZT_S_STOP; |
| 2250 | loop_ctl = 1; |
| 2251 | break; |
| 2252 | } |
| 2253 | if (azt_read_count <= 0) |
| 2254 | printk |
| 2255 | ("aztcd: warning - try to read 0 frames\n"); |
| 2256 | while (azt_read_count) { /*??? fast read ahead loop */ |
| 2257 | azt_buf_bn[azt_buf_in] = -1; |
| 2258 | DTEN_LOW; /*??? unsolved problem, very |
| 2259 | seldom we get timeouts |
| 2260 | here, don't now the real |
| 2261 | reason. With my drive this |
| 2262 | sometimes also happens with |
| 2263 | Aztech's original driver under |
| 2264 | DOS. Is it a hardware bug? |
| 2265 | I tried to recover from such |
| 2266 | situations here. Zimmermann */ |
| 2267 | if (aztTimeOutCount >= AZT_TIMEOUT) { |
| 2268 | printk |
| 2269 | ("read_count:%d CURRENT->nr_sectors:%ld azt_buf_in:%d\n", |
| 2270 | azt_read_count, |
| 2271 | CURRENT->nr_sectors, |
| 2272 | azt_buf_in); |
| 2273 | printk |
| 2274 | ("azt_transfer_is_active:%x\n", |
| 2275 | azt_transfer_is_active); |
| 2276 | azt_read_count = 0; |
| 2277 | azt_state = AZT_S_STOP; |
| 2278 | loop_ctl = 1; |
| 2279 | end_request(CURRENT, 1); /*should we have here (1) or (0)? */ |
| 2280 | } else { |
| 2281 | if (azt_read_mode == |
| 2282 | AZT_MODE_2) { |
| 2283 | insb(DATA_PORT, |
| 2284 | azt_buf + |
| 2285 | CD_FRAMESIZE_RAW |
| 2286 | * azt_buf_in, |
| 2287 | CD_FRAMESIZE_RAW); |
| 2288 | } else { |
| 2289 | insb(DATA_PORT, |
| 2290 | azt_buf + |
| 2291 | CD_FRAMESIZE * |
| 2292 | azt_buf_in, |
| 2293 | CD_FRAMESIZE); |
| 2294 | } |
| 2295 | azt_read_count--; |
| 2296 | #ifdef AZT_TEST3 |
| 2297 | printk |
| 2298 | ("AZT_S_DATA; ---I've read data- read_count: %d\n", |
| 2299 | azt_read_count); |
| 2300 | printk |
| 2301 | ("azt_next_bn:%d azt_buf_in:%d azt_buf_out:%d azt_buf_bn:%d\n", |
| 2302 | azt_next_bn, |
| 2303 | azt_buf_in, |
| 2304 | azt_buf_out, |
| 2305 | azt_buf_bn |
| 2306 | [azt_buf_in]); |
| 2307 | #endif |
| 2308 | azt_buf_bn[azt_buf_in] = |
| 2309 | azt_next_bn++; |
| 2310 | if (azt_buf_out == -1) |
| 2311 | azt_buf_out = |
| 2312 | azt_buf_in; |
| 2313 | azt_buf_in = |
| 2314 | azt_buf_in + 1 == |
| 2315 | AZT_BUF_SIZ ? 0 : |
| 2316 | azt_buf_in + 1; |
| 2317 | } |
| 2318 | } |
| 2319 | if (!azt_transfer_is_active) { |
| 2320 | while (current_valid()) { |
| 2321 | azt_transfer(); |
| 2322 | if (CURRENT->nr_sectors == |
| 2323 | 0) |
| 2324 | end_request(CURRENT, 1); |
| 2325 | else |
| 2326 | break; |
| 2327 | } |
| 2328 | } |
| 2329 | |
| 2330 | if (current_valid() |
| 2331 | && (CURRENT->sector / 4 < azt_next_bn |
| 2332 | || CURRENT->sector / 4 > |
| 2333 | azt_next_bn + AZT_BUF_SIZ)) { |
| 2334 | azt_state = AZT_S_STOP; |
| 2335 | loop_ctl = 1; |
| 2336 | break; |
| 2337 | } |
| 2338 | AztTimeout = READ_TIMEOUT; |
| 2339 | if (azt_read_count == 0) { |
| 2340 | azt_state = AZT_S_STOP; |
| 2341 | loop_ctl = 1; |
| 2342 | break; |
| 2343 | } |
| 2344 | break; |
| 2345 | } |
| 2346 | break; |
| 2347 | |
| 2348 | |
| 2349 | case AZT_S_STOP: |
| 2350 | #ifdef AZT_TEST3 |
| 2351 | if (azt_state != azt_state_old) { |
| 2352 | azt_state_old = azt_state; |
| 2353 | printk("AZT_S_STOP\n"); |
| 2354 | } |
| 2355 | #endif |
| 2356 | if (azt_read_count != 0) |
| 2357 | printk("aztcd: discard data=%x frames\n", |
| 2358 | azt_read_count); |
| 2359 | while (azt_read_count != 0) { |
| 2360 | int i; |
| 2361 | if (!(inb(STATUS_PORT) & AFL_DATA)) { |
| 2362 | if (azt_read_mode == AZT_MODE_2) |
| 2363 | for (i = 0; |
| 2364 | i < CD_FRAMESIZE_RAW; |
| 2365 | i++) |
| 2366 | inb(DATA_PORT); |
| 2367 | else |
| 2368 | for (i = 0; |
| 2369 | i < CD_FRAMESIZE; i++) |
| 2370 | inb(DATA_PORT); |
| 2371 | } |
| 2372 | azt_read_count--; |
| 2373 | } |
| 2374 | if (aztSendCmd(ACMD_GET_STATUS)) |
| 2375 | RETURN("azt_poll 5"); |
| 2376 | azt_state = AZT_S_STOPPING; |
| 2377 | AztTimeout = 1000; |
| 2378 | break; |
| 2379 | |
| 2380 | case AZT_S_STOPPING: |
| 2381 | #ifdef AZT_TEST3 |
| 2382 | if (azt_state != azt_state_old) { |
| 2383 | azt_state_old = azt_state; |
| 2384 | printk("AZT_S_STOPPING\n"); |
| 2385 | } |
| 2386 | #endif |
| 2387 | |
| 2388 | if ((st = aztStatus()) == -1 && AztTimeout) |
| 2389 | break; |
| 2390 | |
| 2391 | if ((st != -1) |
| 2392 | && ((st & AST_DSK_CHG) |
| 2393 | || (st & AST_NOT_READY))) { |
| 2394 | aztDiskChanged = 1; |
| 2395 | aztTocUpToDate = 0; |
| 2396 | azt_invalidate_buffers(); |
| 2397 | printk |
| 2398 | ("aztcd: Disk Changed or Not Ready 4 - Unmount Disk!\n"); |
| 2399 | end_request(CURRENT, 0); |
| 2400 | } |
| 2401 | |
| 2402 | #ifdef AZT_TEST3 |
| 2403 | printk("CURRENT_VALID %d azt_mode %d\n", |
| 2404 | current_valid(), azt_mode); |
| 2405 | #endif |
| 2406 | |
| 2407 | if (current_valid()) { |
| 2408 | if (st != -1) { |
| 2409 | if (azt_mode == 1) { |
| 2410 | azt_state = AZT_S_READ; |
| 2411 | loop_ctl = 1; |
| 2412 | skip = 1; |
| 2413 | break; |
| 2414 | } else { |
| 2415 | azt_state = AZT_S_MODE; |
| 2416 | loop_ctl = 1; |
| 2417 | skip = 1; |
| 2418 | break; |
| 2419 | } |
| 2420 | } else { |
| 2421 | azt_state = AZT_S_START; |
| 2422 | AztTimeout = 1; |
| 2423 | } |
| 2424 | } else { |
| 2425 | azt_state = AZT_S_IDLE; |
| 2426 | return; |
| 2427 | } |
| 2428 | break; |
| 2429 | |
| 2430 | default: |
| 2431 | printk("aztcd: invalid state %d\n", azt_state); |
| 2432 | return; |
| 2433 | } /* case */ |
| 2434 | } /* while */ |
| 2435 | |
| 2436 | |
| 2437 | if (!AztTimeout--) { |
| 2438 | printk("aztcd: timeout in state %d\n", azt_state); |
| 2439 | azt_state = AZT_S_STOP; |
| 2440 | if (aztSendCmd(ACMD_STOP)) |
| 2441 | RETURN("azt_poll 6"); |
| 2442 | STEN_LOW_WAIT; |
| 2443 | }; |
| 2444 | |
| 2445 | SET_TIMER(azt_poll, HZ / 100); |
| 2446 | } |
| 2447 | |
| 2448 | |
| 2449 | /*########################################################################### |
| 2450 | * Miscellaneous support functions |
| 2451 | ########################################################################### |
| 2452 | */ |
| 2453 | static void azt_hsg2msf(long hsg, struct msf *msf) |
| 2454 | { |
| 2455 | hsg += 150; |
| 2456 | msf->min = hsg / 4500; |
| 2457 | hsg %= 4500; |
| 2458 | msf->sec = hsg / 75; |
| 2459 | msf->frame = hsg % 75; |
| 2460 | #ifdef AZT_DEBUG |
| 2461 | if (msf->min >= 70) |
| 2462 | printk("aztcd: Error hsg2msf address Minutes\n"); |
| 2463 | if (msf->sec >= 60) |
| 2464 | printk("aztcd: Error hsg2msf address Seconds\n"); |
| 2465 | if (msf->frame >= 75) |
| 2466 | printk("aztcd: Error hsg2msf address Frames\n"); |
| 2467 | #endif |
| 2468 | azt_bin2bcd(&msf->min); /* convert to BCD */ |
| 2469 | azt_bin2bcd(&msf->sec); |
| 2470 | azt_bin2bcd(&msf->frame); |
| 2471 | } |
| 2472 | |
| 2473 | static long azt_msf2hsg(struct msf *mp) |
| 2474 | { |
| 2475 | return azt_bcd2bin(mp->frame) + azt_bcd2bin(mp->sec) * 75 |
| 2476 | + azt_bcd2bin(mp->min) * 4500 - CD_MSF_OFFSET; |
| 2477 | } |
| 2478 | |
| 2479 | static void azt_bin2bcd(unsigned char *p) |
| 2480 | { |
| 2481 | int u, t; |
| 2482 | |
| 2483 | u = *p % 10; |
| 2484 | t = *p / 10; |
| 2485 | *p = u | (t << 4); |
| 2486 | } |
| 2487 | |
| 2488 | static int azt_bcd2bin(unsigned char bcd) |
| 2489 | { |
| 2490 | return (bcd >> 4) * 10 + (bcd & 0xF); |
| 2491 | } |
| 2492 | |
| 2493 | MODULE_LICENSE("GPL"); |
| 2494 | MODULE_ALIAS_BLOCKDEV_MAJOR(AZTECH_CDROM_MAJOR); |