| 1 | /* |
| 2 | * ATAPI CD-ROM driver. |
| 3 | * |
| 4 | * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov> |
| 5 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> |
| 6 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> |
| 7 | * Copyright (C) 2005, 2007-2009 Bartlomiej Zolnierkiewicz |
| 8 | * |
| 9 | * May be copied or modified under the terms of the GNU General Public |
| 10 | * License. See linux/COPYING for more information. |
| 11 | * |
| 12 | * See Documentation/cdrom/ide-cd for usage information. |
| 13 | * |
| 14 | * Suggestions are welcome. Patches that work are more welcome though. ;-) |
| 15 | * |
| 16 | * Documentation: |
| 17 | * Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards. |
| 18 | * |
| 19 | * For historical changelog please see: |
| 20 | * Documentation/ide/ChangeLog.ide-cd.1994-2004 |
| 21 | */ |
| 22 | |
| 23 | #define DRV_NAME "ide-cd" |
| 24 | #define PFX DRV_NAME ": " |
| 25 | |
| 26 | #define IDECD_VERSION "5.00" |
| 27 | |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/types.h> |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/delay.h> |
| 32 | #include <linux/timer.h> |
| 33 | #include <linux/seq_file.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/interrupt.h> |
| 36 | #include <linux/errno.h> |
| 37 | #include <linux/cdrom.h> |
| 38 | #include <linux/ide.h> |
| 39 | #include <linux/completion.h> |
| 40 | #include <linux/mutex.h> |
| 41 | #include <linux/bcd.h> |
| 42 | |
| 43 | /* For SCSI -> ATAPI command conversion */ |
| 44 | #include <scsi/scsi.h> |
| 45 | |
| 46 | #include <linux/io.h> |
| 47 | #include <asm/byteorder.h> |
| 48 | #include <linux/uaccess.h> |
| 49 | #include <asm/unaligned.h> |
| 50 | |
| 51 | #include "ide-cd.h" |
| 52 | |
| 53 | static DEFINE_MUTEX(ide_cd_mutex); |
| 54 | static DEFINE_MUTEX(idecd_ref_mutex); |
| 55 | |
| 56 | static void ide_cd_release(struct device *); |
| 57 | |
| 58 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) |
| 59 | { |
| 60 | struct cdrom_info *cd = NULL; |
| 61 | |
| 62 | mutex_lock(&idecd_ref_mutex); |
| 63 | cd = ide_drv_g(disk, cdrom_info); |
| 64 | if (cd) { |
| 65 | if (ide_device_get(cd->drive)) |
| 66 | cd = NULL; |
| 67 | else |
| 68 | get_device(&cd->dev); |
| 69 | |
| 70 | } |
| 71 | mutex_unlock(&idecd_ref_mutex); |
| 72 | return cd; |
| 73 | } |
| 74 | |
| 75 | static void ide_cd_put(struct cdrom_info *cd) |
| 76 | { |
| 77 | ide_drive_t *drive = cd->drive; |
| 78 | |
| 79 | mutex_lock(&idecd_ref_mutex); |
| 80 | put_device(&cd->dev); |
| 81 | ide_device_put(drive); |
| 82 | mutex_unlock(&idecd_ref_mutex); |
| 83 | } |
| 84 | |
| 85 | /* |
| 86 | * Generic packet command support and error handling routines. |
| 87 | */ |
| 88 | |
| 89 | /* Mark that we've seen a media change and invalidate our internal buffers. */ |
| 90 | static void cdrom_saw_media_change(ide_drive_t *drive) |
| 91 | { |
| 92 | drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED; |
| 93 | drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID; |
| 94 | } |
| 95 | |
| 96 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq) |
| 97 | { |
| 98 | struct request_sense *sense = &drive->sense_data; |
| 99 | int log = 0; |
| 100 | |
| 101 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
| 102 | return 0; |
| 103 | |
| 104 | ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key); |
| 105 | |
| 106 | switch (sense->sense_key) { |
| 107 | case NO_SENSE: |
| 108 | case RECOVERED_ERROR: |
| 109 | break; |
| 110 | case NOT_READY: |
| 111 | /* |
| 112 | * don't care about tray state messages for e.g. capacity |
| 113 | * commands or in-progress or becoming ready |
| 114 | */ |
| 115 | if (sense->asc == 0x3a || sense->asc == 0x04) |
| 116 | break; |
| 117 | log = 1; |
| 118 | break; |
| 119 | case ILLEGAL_REQUEST: |
| 120 | /* |
| 121 | * don't log START_STOP unit with LoEj set, since we cannot |
| 122 | * reliably check if drive can auto-close |
| 123 | */ |
| 124 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) |
| 125 | break; |
| 126 | log = 1; |
| 127 | break; |
| 128 | case UNIT_ATTENTION: |
| 129 | /* |
| 130 | * Make good and sure we've seen this potential media change. |
| 131 | * Some drives (i.e. Creative) fail to present the correct sense |
| 132 | * key in the error register. |
| 133 | */ |
| 134 | cdrom_saw_media_change(drive); |
| 135 | break; |
| 136 | default: |
| 137 | log = 1; |
| 138 | break; |
| 139 | } |
| 140 | return log; |
| 141 | } |
| 142 | |
| 143 | static void cdrom_analyze_sense_data(ide_drive_t *drive, |
| 144 | struct request *failed_command) |
| 145 | { |
| 146 | struct request_sense *sense = &drive->sense_data; |
| 147 | struct cdrom_info *info = drive->driver_data; |
| 148 | unsigned long sector; |
| 149 | unsigned long bio_sectors; |
| 150 | |
| 151 | ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x", |
| 152 | sense->error_code, sense->sense_key); |
| 153 | |
| 154 | if (failed_command) |
| 155 | ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x", |
| 156 | failed_command->cmd[0]); |
| 157 | |
| 158 | if (!cdrom_log_sense(drive, failed_command)) |
| 159 | return; |
| 160 | |
| 161 | /* |
| 162 | * If a read toc is executed for a CD-R or CD-RW medium where the first |
| 163 | * toc has not been recorded yet, it will fail with 05/24/00 (which is a |
| 164 | * confusing error) |
| 165 | */ |
| 166 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) |
| 167 | if (sense->sense_key == 0x05 && sense->asc == 0x24) |
| 168 | return; |
| 169 | |
| 170 | /* current error */ |
| 171 | if (sense->error_code == 0x70) { |
| 172 | switch (sense->sense_key) { |
| 173 | case MEDIUM_ERROR: |
| 174 | case VOLUME_OVERFLOW: |
| 175 | case ILLEGAL_REQUEST: |
| 176 | if (!sense->valid) |
| 177 | break; |
| 178 | if (failed_command == NULL || |
| 179 | failed_command->cmd_type != REQ_TYPE_FS) |
| 180 | break; |
| 181 | sector = (sense->information[0] << 24) | |
| 182 | (sense->information[1] << 16) | |
| 183 | (sense->information[2] << 8) | |
| 184 | (sense->information[3]); |
| 185 | |
| 186 | if (queue_logical_block_size(drive->queue) == 2048) |
| 187 | /* device sector size is 2K */ |
| 188 | sector <<= 2; |
| 189 | |
| 190 | bio_sectors = max(bio_sectors(failed_command->bio), 4U); |
| 191 | sector &= ~(bio_sectors - 1); |
| 192 | |
| 193 | /* |
| 194 | * The SCSI specification allows for the value |
| 195 | * returned by READ CAPACITY to be up to 75 2K |
| 196 | * sectors past the last readable block. |
| 197 | * Therefore, if we hit a medium error within the |
| 198 | * last 75 2K sectors, we decrease the saved size |
| 199 | * value. |
| 200 | */ |
| 201 | if (sector < get_capacity(info->disk) && |
| 202 | drive->probed_capacity - sector < 4 * 75) |
| 203 | set_capacity(info->disk, sector); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | ide_cd_log_error(drive->name, failed_command, sense); |
| 208 | } |
| 209 | |
| 210 | static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq) |
| 211 | { |
| 212 | /* |
| 213 | * For REQ_TYPE_SENSE, "rq->special" points to the original |
| 214 | * failed request. Also, the sense data should be read |
| 215 | * directly from rq which might be different from the original |
| 216 | * sense buffer if it got copied during mapping. |
| 217 | */ |
| 218 | struct request *failed = (struct request *)rq->special; |
| 219 | void *sense = bio_data(rq->bio); |
| 220 | |
| 221 | if (failed) { |
| 222 | if (failed->sense) { |
| 223 | /* |
| 224 | * Sense is always read into drive->sense_data. |
| 225 | * Copy back if the failed request has its |
| 226 | * sense pointer set. |
| 227 | */ |
| 228 | memcpy(failed->sense, sense, 18); |
| 229 | failed->sense_len = rq->sense_len; |
| 230 | } |
| 231 | cdrom_analyze_sense_data(drive, failed); |
| 232 | |
| 233 | if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed))) |
| 234 | BUG(); |
| 235 | } else |
| 236 | cdrom_analyze_sense_data(drive, NULL); |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /* |
| 241 | * Allow the drive 5 seconds to recover; some devices will return NOT_READY |
| 242 | * while flushing data from cache. |
| 243 | * |
| 244 | * returns: 0 failed (write timeout expired) |
| 245 | * 1 success |
| 246 | */ |
| 247 | static int ide_cd_breathe(ide_drive_t *drive, struct request *rq) |
| 248 | { |
| 249 | |
| 250 | struct cdrom_info *info = drive->driver_data; |
| 251 | |
| 252 | if (!rq->errors) |
| 253 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; |
| 254 | |
| 255 | rq->errors = 1; |
| 256 | |
| 257 | if (time_after(jiffies, info->write_timeout)) |
| 258 | return 0; |
| 259 | else { |
| 260 | /* |
| 261 | * take a breather |
| 262 | */ |
| 263 | blk_delay_queue(drive->queue, 1); |
| 264 | return 1; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Returns: |
| 270 | * 0: if the request should be continued. |
| 271 | * 1: if the request will be going through error recovery. |
| 272 | * 2: if the request should be ended. |
| 273 | */ |
| 274 | static int cdrom_decode_status(ide_drive_t *drive, u8 stat) |
| 275 | { |
| 276 | ide_hwif_t *hwif = drive->hwif; |
| 277 | struct request *rq = hwif->rq; |
| 278 | int err, sense_key, do_end_request = 0; |
| 279 | |
| 280 | /* get the IDE error register */ |
| 281 | err = ide_read_error(drive); |
| 282 | sense_key = err >> 4; |
| 283 | |
| 284 | ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, " |
| 285 | "stat 0x%x", |
| 286 | rq->cmd[0], rq->cmd_type, err, stat); |
| 287 | |
| 288 | if (rq->cmd_type == REQ_TYPE_SENSE) { |
| 289 | /* |
| 290 | * We got an error trying to get sense info from the drive |
| 291 | * (probably while trying to recover from a former error). |
| 292 | * Just give up. |
| 293 | */ |
| 294 | rq->cmd_flags |= REQ_FAILED; |
| 295 | return 2; |
| 296 | } |
| 297 | |
| 298 | /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */ |
| 299 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC && !rq->errors) |
| 300 | rq->errors = SAM_STAT_CHECK_CONDITION; |
| 301 | |
| 302 | if (blk_noretry_request(rq)) |
| 303 | do_end_request = 1; |
| 304 | |
| 305 | switch (sense_key) { |
| 306 | case NOT_READY: |
| 307 | if (rq->cmd_type == REQ_TYPE_FS && rq_data_dir(rq) == WRITE) { |
| 308 | if (ide_cd_breathe(drive, rq)) |
| 309 | return 1; |
| 310 | } else { |
| 311 | cdrom_saw_media_change(drive); |
| 312 | |
| 313 | if (rq->cmd_type == REQ_TYPE_FS && |
| 314 | !(rq->cmd_flags & REQ_QUIET)) |
| 315 | printk(KERN_ERR PFX "%s: tray open\n", |
| 316 | drive->name); |
| 317 | } |
| 318 | do_end_request = 1; |
| 319 | break; |
| 320 | case UNIT_ATTENTION: |
| 321 | cdrom_saw_media_change(drive); |
| 322 | |
| 323 | if (rq->cmd_type != REQ_TYPE_FS) |
| 324 | return 0; |
| 325 | |
| 326 | /* |
| 327 | * Arrange to retry the request but be sure to give up if we've |
| 328 | * retried too many times. |
| 329 | */ |
| 330 | if (++rq->errors > ERROR_MAX) |
| 331 | do_end_request = 1; |
| 332 | break; |
| 333 | case ILLEGAL_REQUEST: |
| 334 | /* |
| 335 | * Don't print error message for this condition -- SFF8090i |
| 336 | * indicates that 5/24/00 is the correct response to a request |
| 337 | * to close the tray if the drive doesn't have that capability. |
| 338 | * |
| 339 | * cdrom_log_sense() knows this! |
| 340 | */ |
| 341 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT) |
| 342 | break; |
| 343 | /* fall-through */ |
| 344 | case DATA_PROTECT: |
| 345 | /* |
| 346 | * No point in retrying after an illegal request or data |
| 347 | * protect error. |
| 348 | */ |
| 349 | if (!(rq->cmd_flags & REQ_QUIET)) |
| 350 | ide_dump_status(drive, "command error", stat); |
| 351 | do_end_request = 1; |
| 352 | break; |
| 353 | case MEDIUM_ERROR: |
| 354 | /* |
| 355 | * No point in re-trying a zillion times on a bad sector. |
| 356 | * If we got here the error is not correctable. |
| 357 | */ |
| 358 | if (!(rq->cmd_flags & REQ_QUIET)) |
| 359 | ide_dump_status(drive, "media error " |
| 360 | "(bad sector)", stat); |
| 361 | do_end_request = 1; |
| 362 | break; |
| 363 | case BLANK_CHECK: |
| 364 | /* disk appears blank? */ |
| 365 | if (!(rq->cmd_flags & REQ_QUIET)) |
| 366 | ide_dump_status(drive, "media error (blank)", |
| 367 | stat); |
| 368 | do_end_request = 1; |
| 369 | break; |
| 370 | default: |
| 371 | if (rq->cmd_type != REQ_TYPE_FS) |
| 372 | break; |
| 373 | if (err & ~ATA_ABORTED) { |
| 374 | /* go to the default handler for other errors */ |
| 375 | ide_error(drive, "cdrom_decode_status", stat); |
| 376 | return 1; |
| 377 | } else if (++rq->errors > ERROR_MAX) |
| 378 | /* we've racked up too many retries, abort */ |
| 379 | do_end_request = 1; |
| 380 | } |
| 381 | |
| 382 | if (rq->cmd_type != REQ_TYPE_FS) { |
| 383 | rq->cmd_flags |= REQ_FAILED; |
| 384 | do_end_request = 1; |
| 385 | } |
| 386 | |
| 387 | /* |
| 388 | * End a request through request sense analysis when we have sense data. |
| 389 | * We need this in order to perform end of media processing. |
| 390 | */ |
| 391 | if (do_end_request) |
| 392 | goto end_request; |
| 393 | |
| 394 | /* if we got a CHECK_CONDITION status, queue a request sense command */ |
| 395 | if (stat & ATA_ERR) |
| 396 | return ide_queue_sense_rq(drive, NULL) ? 2 : 1; |
| 397 | return 1; |
| 398 | |
| 399 | end_request: |
| 400 | if (stat & ATA_ERR) { |
| 401 | hwif->rq = NULL; |
| 402 | return ide_queue_sense_rq(drive, rq) ? 2 : 1; |
| 403 | } else |
| 404 | return 2; |
| 405 | } |
| 406 | |
| 407 | static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd) |
| 408 | { |
| 409 | struct request *rq = cmd->rq; |
| 410 | |
| 411 | ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]); |
| 412 | |
| 413 | /* |
| 414 | * Some of the trailing request sense fields are optional, |
| 415 | * and some drives don't send them. Sigh. |
| 416 | */ |
| 417 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && |
| 418 | cmd->nleft > 0 && cmd->nleft <= 5) |
| 419 | cmd->nleft = 0; |
| 420 | } |
| 421 | |
| 422 | int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, |
| 423 | int write, void *buffer, unsigned *bufflen, |
| 424 | struct request_sense *sense, int timeout, |
| 425 | unsigned int cmd_flags) |
| 426 | { |
| 427 | struct cdrom_info *info = drive->driver_data; |
| 428 | struct request_sense local_sense; |
| 429 | int retries = 10; |
| 430 | unsigned int flags = 0; |
| 431 | |
| 432 | if (!sense) |
| 433 | sense = &local_sense; |
| 434 | |
| 435 | ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, " |
| 436 | "cmd_flags: 0x%x", |
| 437 | cmd[0], write, timeout, cmd_flags); |
| 438 | |
| 439 | /* start of retry loop */ |
| 440 | do { |
| 441 | struct request *rq; |
| 442 | int error; |
| 443 | |
| 444 | rq = blk_get_request(drive->queue, write, __GFP_WAIT); |
| 445 | |
| 446 | memcpy(rq->cmd, cmd, BLK_MAX_CDB); |
| 447 | rq->cmd_type = REQ_TYPE_ATA_PC; |
| 448 | rq->sense = sense; |
| 449 | rq->cmd_flags |= cmd_flags; |
| 450 | rq->timeout = timeout; |
| 451 | if (buffer) { |
| 452 | error = blk_rq_map_kern(drive->queue, rq, buffer, |
| 453 | *bufflen, GFP_NOIO); |
| 454 | if (error) { |
| 455 | blk_put_request(rq); |
| 456 | return error; |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | error = blk_execute_rq(drive->queue, info->disk, rq, 0); |
| 461 | |
| 462 | if (buffer) |
| 463 | *bufflen = rq->resid_len; |
| 464 | |
| 465 | flags = rq->cmd_flags; |
| 466 | blk_put_request(rq); |
| 467 | |
| 468 | /* |
| 469 | * FIXME: we should probably abort/retry or something in case of |
| 470 | * failure. |
| 471 | */ |
| 472 | if (flags & REQ_FAILED) { |
| 473 | /* |
| 474 | * The request failed. Retry if it was due to a unit |
| 475 | * attention status (usually means media was changed). |
| 476 | */ |
| 477 | struct request_sense *reqbuf = sense; |
| 478 | |
| 479 | if (reqbuf->sense_key == UNIT_ATTENTION) |
| 480 | cdrom_saw_media_change(drive); |
| 481 | else if (reqbuf->sense_key == NOT_READY && |
| 482 | reqbuf->asc == 4 && reqbuf->ascq != 4) { |
| 483 | /* |
| 484 | * The drive is in the process of loading |
| 485 | * a disk. Retry, but wait a little to give |
| 486 | * the drive time to complete the load. |
| 487 | */ |
| 488 | ssleep(2); |
| 489 | } else { |
| 490 | /* otherwise, don't retry */ |
| 491 | retries = 0; |
| 492 | } |
| 493 | --retries; |
| 494 | } |
| 495 | |
| 496 | /* end of retry loop */ |
| 497 | } while ((flags & REQ_FAILED) && retries >= 0); |
| 498 | |
| 499 | /* return an error if the command failed */ |
| 500 | return (flags & REQ_FAILED) ? -EIO : 0; |
| 501 | } |
| 502 | |
| 503 | /* |
| 504 | * returns true if rq has been completed |
| 505 | */ |
| 506 | static bool ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) |
| 507 | { |
| 508 | unsigned int nr_bytes = cmd->nbytes - cmd->nleft; |
| 509 | |
| 510 | if (cmd->tf_flags & IDE_TFLAG_WRITE) |
| 511 | nr_bytes -= cmd->last_xfer_len; |
| 512 | |
| 513 | if (nr_bytes > 0) { |
| 514 | ide_complete_rq(drive, 0, nr_bytes); |
| 515 | return true; |
| 516 | } |
| 517 | |
| 518 | return false; |
| 519 | } |
| 520 | |
| 521 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
| 522 | { |
| 523 | ide_hwif_t *hwif = drive->hwif; |
| 524 | struct ide_cmd *cmd = &hwif->cmd; |
| 525 | struct request *rq = hwif->rq; |
| 526 | ide_expiry_t *expiry = NULL; |
| 527 | int dma_error = 0, dma, thislen, uptodate = 0; |
| 528 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0; |
| 529 | int sense = (rq->cmd_type == REQ_TYPE_SENSE); |
| 530 | unsigned int timeout; |
| 531 | u16 len; |
| 532 | u8 ireason, stat; |
| 533 | |
| 534 | ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write); |
| 535 | |
| 536 | /* check for errors */ |
| 537 | dma = drive->dma; |
| 538 | if (dma) { |
| 539 | drive->dma = 0; |
| 540 | drive->waiting_for_dma = 0; |
| 541 | dma_error = hwif->dma_ops->dma_end(drive); |
| 542 | ide_dma_unmap_sg(drive, cmd); |
| 543 | if (dma_error) { |
| 544 | printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name, |
| 545 | write ? "write" : "read"); |
| 546 | ide_dma_off(drive); |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | /* check status */ |
| 551 | stat = hwif->tp_ops->read_status(hwif); |
| 552 | |
| 553 | if (!OK_STAT(stat, 0, BAD_R_STAT)) { |
| 554 | rc = cdrom_decode_status(drive, stat); |
| 555 | if (rc) { |
| 556 | if (rc == 2) |
| 557 | goto out_end; |
| 558 | return ide_stopped; |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | /* using dma, transfer is complete now */ |
| 563 | if (dma) { |
| 564 | if (dma_error) |
| 565 | return ide_error(drive, "dma error", stat); |
| 566 | uptodate = 1; |
| 567 | goto out_end; |
| 568 | } |
| 569 | |
| 570 | ide_read_bcount_and_ireason(drive, &len, &ireason); |
| 571 | |
| 572 | thislen = (rq->cmd_type == REQ_TYPE_FS) ? len : cmd->nleft; |
| 573 | if (thislen > len) |
| 574 | thislen = len; |
| 575 | |
| 576 | ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d", |
| 577 | stat, thislen); |
| 578 | |
| 579 | /* If DRQ is clear, the command has completed. */ |
| 580 | if ((stat & ATA_DRQ) == 0) { |
| 581 | if (rq->cmd_type == REQ_TYPE_FS) { |
| 582 | /* |
| 583 | * If we're not done reading/writing, complain. |
| 584 | * Otherwise, complete the command normally. |
| 585 | */ |
| 586 | uptodate = 1; |
| 587 | if (cmd->nleft > 0) { |
| 588 | printk(KERN_ERR PFX "%s: %s: data underrun " |
| 589 | "(%u bytes)\n", drive->name, __func__, |
| 590 | cmd->nleft); |
| 591 | if (!write) |
| 592 | rq->cmd_flags |= REQ_FAILED; |
| 593 | uptodate = 0; |
| 594 | } |
| 595 | } else if (rq->cmd_type != REQ_TYPE_BLOCK_PC) { |
| 596 | ide_cd_request_sense_fixup(drive, cmd); |
| 597 | |
| 598 | uptodate = cmd->nleft ? 0 : 1; |
| 599 | |
| 600 | /* |
| 601 | * suck out the remaining bytes from the drive in an |
| 602 | * attempt to complete the data xfer. (see BZ#13399) |
| 603 | */ |
| 604 | if (!(stat & ATA_ERR) && !uptodate && thislen) { |
| 605 | ide_pio_bytes(drive, cmd, write, thislen); |
| 606 | uptodate = cmd->nleft ? 0 : 1; |
| 607 | } |
| 608 | |
| 609 | if (!uptodate) |
| 610 | rq->cmd_flags |= REQ_FAILED; |
| 611 | } |
| 612 | goto out_end; |
| 613 | } |
| 614 | |
| 615 | rc = ide_check_ireason(drive, rq, len, ireason, write); |
| 616 | if (rc) |
| 617 | goto out_end; |
| 618 | |
| 619 | cmd->last_xfer_len = 0; |
| 620 | |
| 621 | ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, " |
| 622 | "ireason: 0x%x", |
| 623 | rq->cmd_type, ireason); |
| 624 | |
| 625 | /* transfer data */ |
| 626 | while (thislen > 0) { |
| 627 | int blen = min_t(int, thislen, cmd->nleft); |
| 628 | |
| 629 | if (cmd->nleft == 0) |
| 630 | break; |
| 631 | |
| 632 | ide_pio_bytes(drive, cmd, write, blen); |
| 633 | cmd->last_xfer_len += blen; |
| 634 | |
| 635 | thislen -= blen; |
| 636 | len -= blen; |
| 637 | |
| 638 | if (sense && write == 0) |
| 639 | rq->sense_len += blen; |
| 640 | } |
| 641 | |
| 642 | /* pad, if necessary */ |
| 643 | if (len > 0) { |
| 644 | if (rq->cmd_type != REQ_TYPE_FS || write == 0) |
| 645 | ide_pad_transfer(drive, write, len); |
| 646 | else { |
| 647 | printk(KERN_ERR PFX "%s: confused, missing data\n", |
| 648 | drive->name); |
| 649 | blk_dump_rq_flags(rq, "cdrom_newpc_intr"); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { |
| 654 | timeout = rq->timeout; |
| 655 | } else { |
| 656 | timeout = ATAPI_WAIT_PC; |
| 657 | if (rq->cmd_type != REQ_TYPE_FS) |
| 658 | expiry = ide_cd_expiry; |
| 659 | } |
| 660 | |
| 661 | hwif->expiry = expiry; |
| 662 | ide_set_handler(drive, cdrom_newpc_intr, timeout); |
| 663 | return ide_started; |
| 664 | |
| 665 | out_end: |
| 666 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC && rc == 0) { |
| 667 | rq->resid_len = 0; |
| 668 | blk_end_request_all(rq, 0); |
| 669 | hwif->rq = NULL; |
| 670 | } else { |
| 671 | if (sense && uptodate) |
| 672 | ide_cd_complete_failed_rq(drive, rq); |
| 673 | |
| 674 | if (rq->cmd_type == REQ_TYPE_FS) { |
| 675 | if (cmd->nleft == 0) |
| 676 | uptodate = 1; |
| 677 | } else { |
| 678 | if (uptodate <= 0 && rq->errors == 0) |
| 679 | rq->errors = -EIO; |
| 680 | } |
| 681 | |
| 682 | if (uptodate == 0 && rq->bio) |
| 683 | if (ide_cd_error_cmd(drive, cmd)) |
| 684 | return ide_stopped; |
| 685 | |
| 686 | /* make sure it's fully ended */ |
| 687 | if (rq->cmd_type != REQ_TYPE_FS) { |
| 688 | rq->resid_len -= cmd->nbytes - cmd->nleft; |
| 689 | if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE)) |
| 690 | rq->resid_len += cmd->last_xfer_len; |
| 691 | } |
| 692 | |
| 693 | ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq)); |
| 694 | |
| 695 | if (sense && rc == 2) |
| 696 | ide_error(drive, "request sense failure", stat); |
| 697 | } |
| 698 | return ide_stopped; |
| 699 | } |
| 700 | |
| 701 | static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) |
| 702 | { |
| 703 | struct cdrom_info *cd = drive->driver_data; |
| 704 | struct request_queue *q = drive->queue; |
| 705 | int write = rq_data_dir(rq) == WRITE; |
| 706 | unsigned short sectors_per_frame = |
| 707 | queue_logical_block_size(q) >> SECTOR_BITS; |
| 708 | |
| 709 | ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, " |
| 710 | "secs_per_frame: %u", |
| 711 | rq->cmd[0], rq->cmd_flags, sectors_per_frame); |
| 712 | |
| 713 | if (write) { |
| 714 | /* disk has become write protected */ |
| 715 | if (get_disk_ro(cd->disk)) |
| 716 | return ide_stopped; |
| 717 | } else { |
| 718 | /* |
| 719 | * We may be retrying this request after an error. Fix up any |
| 720 | * weirdness which might be present in the request packet. |
| 721 | */ |
| 722 | q->prep_rq_fn(q, rq); |
| 723 | } |
| 724 | |
| 725 | /* fs requests *must* be hardware frame aligned */ |
| 726 | if ((blk_rq_sectors(rq) & (sectors_per_frame - 1)) || |
| 727 | (blk_rq_pos(rq) & (sectors_per_frame - 1))) |
| 728 | return ide_stopped; |
| 729 | |
| 730 | /* use DMA, if possible */ |
| 731 | drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); |
| 732 | |
| 733 | if (write) |
| 734 | cd->devinfo.media_written = 1; |
| 735 | |
| 736 | rq->timeout = ATAPI_WAIT_PC; |
| 737 | |
| 738 | return ide_started; |
| 739 | } |
| 740 | |
| 741 | static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
| 742 | { |
| 743 | |
| 744 | ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x", |
| 745 | rq->cmd[0], rq->cmd_type); |
| 746 | |
| 747 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
| 748 | rq->cmd_flags |= REQ_QUIET; |
| 749 | else |
| 750 | rq->cmd_flags &= ~REQ_FAILED; |
| 751 | |
| 752 | drive->dma = 0; |
| 753 | |
| 754 | /* sg request */ |
| 755 | if (rq->bio) { |
| 756 | struct request_queue *q = drive->queue; |
| 757 | char *buf = bio_data(rq->bio); |
| 758 | unsigned int alignment; |
| 759 | |
| 760 | drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); |
| 761 | |
| 762 | /* |
| 763 | * check if dma is safe |
| 764 | * |
| 765 | * NOTE! The "len" and "addr" checks should possibly have |
| 766 | * separate masks. |
| 767 | */ |
| 768 | alignment = queue_dma_alignment(q) | q->dma_pad_mask; |
| 769 | if ((unsigned long)buf & alignment |
| 770 | || blk_rq_bytes(rq) & q->dma_pad_mask |
| 771 | || object_is_on_stack(buf)) |
| 772 | drive->dma = 0; |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, |
| 777 | sector_t block) |
| 778 | { |
| 779 | struct ide_cmd cmd; |
| 780 | int uptodate = 0; |
| 781 | unsigned int nsectors; |
| 782 | |
| 783 | ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu", |
| 784 | rq->cmd[0], (unsigned long long)block); |
| 785 | |
| 786 | if (drive->debug_mask & IDE_DBG_RQ) |
| 787 | blk_dump_rq_flags(rq, "ide_cd_do_request"); |
| 788 | |
| 789 | switch (rq->cmd_type) { |
| 790 | case REQ_TYPE_FS: |
| 791 | if (cdrom_start_rw(drive, rq) == ide_stopped) |
| 792 | goto out_end; |
| 793 | break; |
| 794 | case REQ_TYPE_SENSE: |
| 795 | case REQ_TYPE_BLOCK_PC: |
| 796 | case REQ_TYPE_ATA_PC: |
| 797 | if (!rq->timeout) |
| 798 | rq->timeout = ATAPI_WAIT_PC; |
| 799 | |
| 800 | cdrom_do_block_pc(drive, rq); |
| 801 | break; |
| 802 | case REQ_TYPE_SPECIAL: |
| 803 | /* right now this can only be a reset... */ |
| 804 | uptodate = 1; |
| 805 | goto out_end; |
| 806 | default: |
| 807 | BUG(); |
| 808 | } |
| 809 | |
| 810 | /* prepare sense request for this command */ |
| 811 | ide_prep_sense(drive, rq); |
| 812 | |
| 813 | memset(&cmd, 0, sizeof(cmd)); |
| 814 | |
| 815 | if (rq_data_dir(rq)) |
| 816 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
| 817 | |
| 818 | cmd.rq = rq; |
| 819 | |
| 820 | if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) { |
| 821 | ide_init_sg_cmd(&cmd, blk_rq_bytes(rq)); |
| 822 | ide_map_sg(drive, &cmd); |
| 823 | } |
| 824 | |
| 825 | return ide_issue_pc(drive, &cmd); |
| 826 | out_end: |
| 827 | nsectors = blk_rq_sectors(rq); |
| 828 | |
| 829 | if (nsectors == 0) |
| 830 | nsectors = 1; |
| 831 | |
| 832 | ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9); |
| 833 | |
| 834 | return ide_stopped; |
| 835 | } |
| 836 | |
| 837 | /* |
| 838 | * Ioctl handling. |
| 839 | * |
| 840 | * Routines which queue packet commands take as a final argument a pointer to a |
| 841 | * request_sense struct. If execution of the command results in an error with a |
| 842 | * CHECK CONDITION status, this structure will be filled with the results of the |
| 843 | * subsequent request sense command. The pointer can also be NULL, in which case |
| 844 | * no sense information is returned. |
| 845 | */ |
| 846 | static void msf_from_bcd(struct atapi_msf *msf) |
| 847 | { |
| 848 | msf->minute = bcd2bin(msf->minute); |
| 849 | msf->second = bcd2bin(msf->second); |
| 850 | msf->frame = bcd2bin(msf->frame); |
| 851 | } |
| 852 | |
| 853 | int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
| 854 | { |
| 855 | struct cdrom_info *info = drive->driver_data; |
| 856 | struct cdrom_device_info *cdi = &info->devinfo; |
| 857 | unsigned char cmd[BLK_MAX_CDB]; |
| 858 | |
| 859 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 860 | |
| 861 | memset(cmd, 0, BLK_MAX_CDB); |
| 862 | cmd[0] = GPCMD_TEST_UNIT_READY; |
| 863 | |
| 864 | /* |
| 865 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs |
| 866 | * instead of supporting the LOAD_UNLOAD opcode. |
| 867 | */ |
| 868 | cmd[7] = cdi->sanyo_slot % 3; |
| 869 | |
| 870 | return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET); |
| 871 | } |
| 872 | |
| 873 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
| 874 | unsigned long *sectors_per_frame, |
| 875 | struct request_sense *sense) |
| 876 | { |
| 877 | struct { |
| 878 | __be32 lba; |
| 879 | __be32 blocklen; |
| 880 | } capbuf; |
| 881 | |
| 882 | int stat; |
| 883 | unsigned char cmd[BLK_MAX_CDB]; |
| 884 | unsigned len = sizeof(capbuf); |
| 885 | u32 blocklen; |
| 886 | |
| 887 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 888 | |
| 889 | memset(cmd, 0, BLK_MAX_CDB); |
| 890 | cmd[0] = GPCMD_READ_CDVD_CAPACITY; |
| 891 | |
| 892 | stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0, |
| 893 | REQ_QUIET); |
| 894 | if (stat) |
| 895 | return stat; |
| 896 | |
| 897 | /* |
| 898 | * Sanity check the given block size, in so far as making |
| 899 | * sure the sectors_per_frame we give to the caller won't |
| 900 | * end up being bogus. |
| 901 | */ |
| 902 | blocklen = be32_to_cpu(capbuf.blocklen); |
| 903 | blocklen = (blocklen >> SECTOR_BITS) << SECTOR_BITS; |
| 904 | switch (blocklen) { |
| 905 | case 512: |
| 906 | case 1024: |
| 907 | case 2048: |
| 908 | case 4096: |
| 909 | break; |
| 910 | default: |
| 911 | printk_once(KERN_ERR PFX "%s: weird block size %u; " |
| 912 | "setting default block size to 2048\n", |
| 913 | drive->name, blocklen); |
| 914 | blocklen = 2048; |
| 915 | break; |
| 916 | } |
| 917 | |
| 918 | *capacity = 1 + be32_to_cpu(capbuf.lba); |
| 919 | *sectors_per_frame = blocklen >> SECTOR_BITS; |
| 920 | |
| 921 | ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu", |
| 922 | *capacity, *sectors_per_frame); |
| 923 | |
| 924 | return 0; |
| 925 | } |
| 926 | |
| 927 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, |
| 928 | int format, char *buf, int buflen, |
| 929 | struct request_sense *sense) |
| 930 | { |
| 931 | unsigned char cmd[BLK_MAX_CDB]; |
| 932 | |
| 933 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 934 | |
| 935 | memset(cmd, 0, BLK_MAX_CDB); |
| 936 | |
| 937 | cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
| 938 | cmd[6] = trackno; |
| 939 | cmd[7] = (buflen >> 8); |
| 940 | cmd[8] = (buflen & 0xff); |
| 941 | cmd[9] = (format << 6); |
| 942 | |
| 943 | if (msf_flag) |
| 944 | cmd[1] = 2; |
| 945 | |
| 946 | return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET); |
| 947 | } |
| 948 | |
| 949 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
| 950 | int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) |
| 951 | { |
| 952 | int stat, ntracks, i; |
| 953 | struct cdrom_info *info = drive->driver_data; |
| 954 | struct cdrom_device_info *cdi = &info->devinfo; |
| 955 | struct atapi_toc *toc = info->toc; |
| 956 | struct { |
| 957 | struct atapi_toc_header hdr; |
| 958 | struct atapi_toc_entry ent; |
| 959 | } ms_tmp; |
| 960 | long last_written; |
| 961 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; |
| 962 | |
| 963 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 964 | |
| 965 | if (toc == NULL) { |
| 966 | /* try to allocate space */ |
| 967 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
| 968 | if (toc == NULL) { |
| 969 | printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n", |
| 970 | drive->name); |
| 971 | return -ENOMEM; |
| 972 | } |
| 973 | info->toc = toc; |
| 974 | } |
| 975 | |
| 976 | /* |
| 977 | * Check to see if the existing data is still valid. If it is, |
| 978 | * just return. |
| 979 | */ |
| 980 | (void) cdrom_check_status(drive, sense); |
| 981 | |
| 982 | if (drive->atapi_flags & IDE_AFLAG_TOC_VALID) |
| 983 | return 0; |
| 984 | |
| 985 | /* try to get the total cdrom capacity and sector size */ |
| 986 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
| 987 | sense); |
| 988 | if (stat) |
| 989 | toc->capacity = 0x1fffff; |
| 990 | |
| 991 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
| 992 | /* save a private copy of the TOC capacity for error handling */ |
| 993 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
| 994 | |
| 995 | blk_queue_logical_block_size(drive->queue, |
| 996 | sectors_per_frame << SECTOR_BITS); |
| 997 | |
| 998 | /* first read just the header, so we know how long the TOC is */ |
| 999 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
| 1000 | sizeof(struct atapi_toc_header), sense); |
| 1001 | if (stat) |
| 1002 | return stat; |
| 1003 | |
| 1004 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) { |
| 1005 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); |
| 1006 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); |
| 1007 | } |
| 1008 | |
| 1009 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 1010 | if (ntracks <= 0) |
| 1011 | return -EIO; |
| 1012 | if (ntracks > MAX_TRACKS) |
| 1013 | ntracks = MAX_TRACKS; |
| 1014 | |
| 1015 | /* now read the whole schmeer */ |
| 1016 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
| 1017 | (char *)&toc->hdr, |
| 1018 | sizeof(struct atapi_toc_header) + |
| 1019 | (ntracks + 1) * |
| 1020 | sizeof(struct atapi_toc_entry), sense); |
| 1021 | |
| 1022 | if (stat && toc->hdr.first_track > 1) { |
| 1023 | /* |
| 1024 | * Cds with CDI tracks only don't have any TOC entries, despite |
| 1025 | * of this the returned values are |
| 1026 | * first_track == last_track = number of CDI tracks + 1, |
| 1027 | * so that this case is indistinguishable from the same layout |
| 1028 | * plus an additional audio track. If we get an error for the |
| 1029 | * regular case, we assume a CDI without additional audio |
| 1030 | * tracks. In this case the readable TOC is empty (CDI tracks |
| 1031 | * are not included) and only holds the Leadout entry. |
| 1032 | * |
| 1033 | * Heiko Eißfeldt. |
| 1034 | */ |
| 1035 | ntracks = 0; |
| 1036 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, |
| 1037 | (char *)&toc->hdr, |
| 1038 | sizeof(struct atapi_toc_header) + |
| 1039 | (ntracks + 1) * |
| 1040 | sizeof(struct atapi_toc_entry), |
| 1041 | sense); |
| 1042 | if (stat) |
| 1043 | return stat; |
| 1044 | |
| 1045 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) { |
| 1046 | toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT); |
| 1047 | toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT); |
| 1048 | } else { |
| 1049 | toc->hdr.first_track = CDROM_LEADOUT; |
| 1050 | toc->hdr.last_track = CDROM_LEADOUT; |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | if (stat) |
| 1055 | return stat; |
| 1056 | |
| 1057 | toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length); |
| 1058 | |
| 1059 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) { |
| 1060 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); |
| 1061 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); |
| 1062 | } |
| 1063 | |
| 1064 | for (i = 0; i <= ntracks; i++) { |
| 1065 | if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) { |
| 1066 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) |
| 1067 | toc->ent[i].track = bcd2bin(toc->ent[i].track); |
| 1068 | msf_from_bcd(&toc->ent[i].addr.msf); |
| 1069 | } |
| 1070 | toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute, |
| 1071 | toc->ent[i].addr.msf.second, |
| 1072 | toc->ent[i].addr.msf.frame); |
| 1073 | } |
| 1074 | |
| 1075 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
| 1076 | /* read the multisession information */ |
| 1077 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
| 1078 | sizeof(ms_tmp), sense); |
| 1079 | if (stat) |
| 1080 | return stat; |
| 1081 | |
| 1082 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); |
| 1083 | } else { |
| 1084 | ms_tmp.hdr.last_track = CDROM_LEADOUT; |
| 1085 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track; |
| 1086 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
| 1087 | } |
| 1088 | |
| 1089 | if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) { |
| 1090 | /* re-read multisession information using MSF format */ |
| 1091 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
| 1092 | sizeof(ms_tmp), sense); |
| 1093 | if (stat) |
| 1094 | return stat; |
| 1095 | |
| 1096 | msf_from_bcd(&ms_tmp.ent.addr.msf); |
| 1097 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
| 1098 | ms_tmp.ent.addr.msf.second, |
| 1099 | ms_tmp.ent.addr.msf.frame); |
| 1100 | } |
| 1101 | |
| 1102 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); |
| 1103 | |
| 1104 | /* now try to get the total cdrom capacity */ |
| 1105 | stat = cdrom_get_last_written(cdi, &last_written); |
| 1106 | if (!stat && (last_written > toc->capacity)) { |
| 1107 | toc->capacity = last_written; |
| 1108 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
| 1109 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
| 1110 | } |
| 1111 | |
| 1112 | /* Remember that we've read this stuff. */ |
| 1113 | drive->atapi_flags |= IDE_AFLAG_TOC_VALID; |
| 1114 | |
| 1115 | return 0; |
| 1116 | } |
| 1117 | |
| 1118 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
| 1119 | { |
| 1120 | struct cdrom_info *info = drive->driver_data; |
| 1121 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1122 | struct packet_command cgc; |
| 1123 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
| 1124 | |
| 1125 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 1126 | |
| 1127 | if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0) |
| 1128 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
| 1129 | |
| 1130 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
| 1131 | do { |
| 1132 | /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
| 1133 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
| 1134 | if (!stat) |
| 1135 | break; |
| 1136 | } while (--attempts); |
| 1137 | return stat; |
| 1138 | } |
| 1139 | |
| 1140 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
| 1141 | { |
| 1142 | struct cdrom_info *cd = drive->driver_data; |
| 1143 | u16 curspeed, maxspeed; |
| 1144 | |
| 1145 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 1146 | |
| 1147 | if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) { |
| 1148 | curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]); |
| 1149 | maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]); |
| 1150 | } else { |
| 1151 | curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]); |
| 1152 | maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]); |
| 1153 | } |
| 1154 | |
| 1155 | ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u", |
| 1156 | curspeed, maxspeed); |
| 1157 | |
| 1158 | cd->current_speed = DIV_ROUND_CLOSEST(curspeed, 176); |
| 1159 | cd->max_speed = DIV_ROUND_CLOSEST(maxspeed, 176); |
| 1160 | } |
| 1161 | |
| 1162 | #define IDE_CD_CAPABILITIES \ |
| 1163 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ |
| 1164 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ |
| 1165 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ |
| 1166 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ |
| 1167 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) |
| 1168 | |
| 1169 | static struct cdrom_device_ops ide_cdrom_dops = { |
| 1170 | .open = ide_cdrom_open_real, |
| 1171 | .release = ide_cdrom_release_real, |
| 1172 | .drive_status = ide_cdrom_drive_status, |
| 1173 | .check_events = ide_cdrom_check_events_real, |
| 1174 | .tray_move = ide_cdrom_tray_move, |
| 1175 | .lock_door = ide_cdrom_lock_door, |
| 1176 | .select_speed = ide_cdrom_select_speed, |
| 1177 | .get_last_session = ide_cdrom_get_last_session, |
| 1178 | .get_mcn = ide_cdrom_get_mcn, |
| 1179 | .reset = ide_cdrom_reset, |
| 1180 | .audio_ioctl = ide_cdrom_audio_ioctl, |
| 1181 | .capability = IDE_CD_CAPABILITIES, |
| 1182 | .generic_packet = ide_cdrom_packet, |
| 1183 | }; |
| 1184 | |
| 1185 | static int ide_cdrom_register(ide_drive_t *drive, int nslots) |
| 1186 | { |
| 1187 | struct cdrom_info *info = drive->driver_data; |
| 1188 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 1189 | |
| 1190 | ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots); |
| 1191 | |
| 1192 | devinfo->ops = &ide_cdrom_dops; |
| 1193 | devinfo->speed = info->current_speed; |
| 1194 | devinfo->capacity = nslots; |
| 1195 | devinfo->handle = drive; |
| 1196 | strcpy(devinfo->name, drive->name); |
| 1197 | |
| 1198 | if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT) |
| 1199 | devinfo->mask |= CDC_SELECT_SPEED; |
| 1200 | |
| 1201 | devinfo->disk = info->disk; |
| 1202 | return register_cdrom(devinfo); |
| 1203 | } |
| 1204 | |
| 1205 | static int ide_cdrom_probe_capabilities(ide_drive_t *drive) |
| 1206 | { |
| 1207 | struct cdrom_info *cd = drive->driver_data; |
| 1208 | struct cdrom_device_info *cdi = &cd->devinfo; |
| 1209 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
| 1210 | mechtype_t mechtype; |
| 1211 | int nslots = 1; |
| 1212 | |
| 1213 | ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx", |
| 1214 | drive->media, drive->atapi_flags); |
| 1215 | |
| 1216 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
| 1217 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | |
| 1218 | CDC_MO_DRIVE | CDC_RAM); |
| 1219 | |
| 1220 | if (drive->media == ide_optical) { |
| 1221 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
| 1222 | printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n", |
| 1223 | drive->name); |
| 1224 | return nslots; |
| 1225 | } |
| 1226 | |
| 1227 | if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) { |
| 1228 | drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT; |
| 1229 | cdi->mask &= ~CDC_PLAY_AUDIO; |
| 1230 | return nslots; |
| 1231 | } |
| 1232 | |
| 1233 | /* |
| 1234 | * We have to cheat a little here. the packet will eventually be queued |
| 1235 | * with ide_cdrom_packet(), which extracts the drive from cdi->handle. |
| 1236 | * Since this device hasn't been registered with the Uniform layer yet, |
| 1237 | * it can't do this. Same goes for cdi->ops. |
| 1238 | */ |
| 1239 | cdi->handle = drive; |
| 1240 | cdi->ops = &ide_cdrom_dops; |
| 1241 | |
| 1242 | if (ide_cdrom_get_capabilities(drive, buf)) |
| 1243 | return 0; |
| 1244 | |
| 1245 | if ((buf[8 + 6] & 0x01) == 0) |
| 1246 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
| 1247 | if (buf[8 + 6] & 0x08) |
| 1248 | drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT; |
| 1249 | if (buf[8 + 3] & 0x01) |
| 1250 | cdi->mask &= ~CDC_CD_R; |
| 1251 | if (buf[8 + 3] & 0x02) |
| 1252 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
| 1253 | if (buf[8 + 2] & 0x38) |
| 1254 | cdi->mask &= ~CDC_DVD; |
| 1255 | if (buf[8 + 3] & 0x20) |
| 1256 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
| 1257 | if (buf[8 + 3] & 0x10) |
| 1258 | cdi->mask &= ~CDC_DVD_R; |
| 1259 | if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK)) |
| 1260 | cdi->mask &= ~CDC_PLAY_AUDIO; |
| 1261 | |
| 1262 | mechtype = buf[8 + 6] >> 5; |
| 1263 | if (mechtype == mechtype_caddy || |
| 1264 | mechtype == mechtype_popup || |
| 1265 | (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE)) |
| 1266 | cdi->mask |= CDC_CLOSE_TRAY; |
| 1267 | |
| 1268 | if (cdi->sanyo_slot > 0) { |
| 1269 | cdi->mask &= ~CDC_SELECT_DISC; |
| 1270 | nslots = 3; |
| 1271 | } else if (mechtype == mechtype_individual_changer || |
| 1272 | mechtype == mechtype_cartridge_changer) { |
| 1273 | nslots = cdrom_number_of_slots(cdi); |
| 1274 | if (nslots > 1) |
| 1275 | cdi->mask &= ~CDC_SELECT_DISC; |
| 1276 | } |
| 1277 | |
| 1278 | ide_cdrom_update_speed(drive, buf); |
| 1279 | |
| 1280 | printk(KERN_INFO PFX "%s: ATAPI", drive->name); |
| 1281 | |
| 1282 | /* don't print speed if the drive reported 0 */ |
| 1283 | if (cd->max_speed) |
| 1284 | printk(KERN_CONT " %dX", cd->max_speed); |
| 1285 | |
| 1286 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
| 1287 | |
| 1288 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
| 1289 | printk(KERN_CONT " DVD%s%s", |
| 1290 | (cdi->mask & CDC_DVD_R) ? "" : "-R", |
| 1291 | (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM"); |
| 1292 | |
| 1293 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
| 1294 | printk(KERN_CONT " CD%s%s", |
| 1295 | (cdi->mask & CDC_CD_R) ? "" : "-R", |
| 1296 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); |
| 1297 | |
| 1298 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
| 1299 | printk(KERN_CONT " changer w/%d slots", nslots); |
| 1300 | else |
| 1301 | printk(KERN_CONT " drive"); |
| 1302 | |
| 1303 | printk(KERN_CONT ", %dkB Cache\n", |
| 1304 | be16_to_cpup((__be16 *)&buf[8 + 12])); |
| 1305 | |
| 1306 | return nslots; |
| 1307 | } |
| 1308 | |
| 1309 | /* standard prep_rq_fn that builds 10 byte cmds */ |
| 1310 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
| 1311 | { |
| 1312 | int hard_sect = queue_logical_block_size(q); |
| 1313 | long block = (long)blk_rq_pos(rq) / (hard_sect >> 9); |
| 1314 | unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9); |
| 1315 | |
| 1316 | memset(rq->cmd, 0, BLK_MAX_CDB); |
| 1317 | |
| 1318 | if (rq_data_dir(rq) == READ) |
| 1319 | rq->cmd[0] = GPCMD_READ_10; |
| 1320 | else |
| 1321 | rq->cmd[0] = GPCMD_WRITE_10; |
| 1322 | |
| 1323 | /* |
| 1324 | * fill in lba |
| 1325 | */ |
| 1326 | rq->cmd[2] = (block >> 24) & 0xff; |
| 1327 | rq->cmd[3] = (block >> 16) & 0xff; |
| 1328 | rq->cmd[4] = (block >> 8) & 0xff; |
| 1329 | rq->cmd[5] = block & 0xff; |
| 1330 | |
| 1331 | /* |
| 1332 | * and transfer length |
| 1333 | */ |
| 1334 | rq->cmd[7] = (blocks >> 8) & 0xff; |
| 1335 | rq->cmd[8] = blocks & 0xff; |
| 1336 | rq->cmd_len = 10; |
| 1337 | return BLKPREP_OK; |
| 1338 | } |
| 1339 | |
| 1340 | /* |
| 1341 | * Most of the SCSI commands are supported directly by ATAPI devices. |
| 1342 | * This transform handles the few exceptions. |
| 1343 | */ |
| 1344 | static int ide_cdrom_prep_pc(struct request *rq) |
| 1345 | { |
| 1346 | u8 *c = rq->cmd; |
| 1347 | |
| 1348 | /* transform 6-byte read/write commands to the 10-byte version */ |
| 1349 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
| 1350 | c[8] = c[4]; |
| 1351 | c[5] = c[3]; |
| 1352 | c[4] = c[2]; |
| 1353 | c[3] = c[1] & 0x1f; |
| 1354 | c[2] = 0; |
| 1355 | c[1] &= 0xe0; |
| 1356 | c[0] += (READ_10 - READ_6); |
| 1357 | rq->cmd_len = 10; |
| 1358 | return BLKPREP_OK; |
| 1359 | } |
| 1360 | |
| 1361 | /* |
| 1362 | * it's silly to pretend we understand 6-byte sense commands, just |
| 1363 | * reject with ILLEGAL_REQUEST and the caller should take the |
| 1364 | * appropriate action |
| 1365 | */ |
| 1366 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { |
| 1367 | rq->errors = ILLEGAL_REQUEST; |
| 1368 | return BLKPREP_KILL; |
| 1369 | } |
| 1370 | |
| 1371 | return BLKPREP_OK; |
| 1372 | } |
| 1373 | |
| 1374 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
| 1375 | { |
| 1376 | if (rq->cmd_type == REQ_TYPE_FS) |
| 1377 | return ide_cdrom_prep_fs(q, rq); |
| 1378 | else if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
| 1379 | return ide_cdrom_prep_pc(rq); |
| 1380 | |
| 1381 | return 0; |
| 1382 | } |
| 1383 | |
| 1384 | struct cd_list_entry { |
| 1385 | const char *id_model; |
| 1386 | const char *id_firmware; |
| 1387 | unsigned int cd_flags; |
| 1388 | }; |
| 1389 | |
| 1390 | #ifdef CONFIG_IDE_PROC_FS |
| 1391 | static sector_t ide_cdrom_capacity(ide_drive_t *drive) |
| 1392 | { |
| 1393 | unsigned long capacity, sectors_per_frame; |
| 1394 | |
| 1395 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) |
| 1396 | return 0; |
| 1397 | |
| 1398 | return capacity * sectors_per_frame; |
| 1399 | } |
| 1400 | |
| 1401 | static int idecd_capacity_proc_show(struct seq_file *m, void *v) |
| 1402 | { |
| 1403 | ide_drive_t *drive = m->private; |
| 1404 | |
| 1405 | seq_printf(m, "%llu\n", (long long)ide_cdrom_capacity(drive)); |
| 1406 | return 0; |
| 1407 | } |
| 1408 | |
| 1409 | static int idecd_capacity_proc_open(struct inode *inode, struct file *file) |
| 1410 | { |
| 1411 | return single_open(file, idecd_capacity_proc_show, PDE(inode)->data); |
| 1412 | } |
| 1413 | |
| 1414 | static const struct file_operations idecd_capacity_proc_fops = { |
| 1415 | .owner = THIS_MODULE, |
| 1416 | .open = idecd_capacity_proc_open, |
| 1417 | .read = seq_read, |
| 1418 | .llseek = seq_lseek, |
| 1419 | .release = single_release, |
| 1420 | }; |
| 1421 | |
| 1422 | static ide_proc_entry_t idecd_proc[] = { |
| 1423 | { "capacity", S_IFREG|S_IRUGO, &idecd_capacity_proc_fops }, |
| 1424 | {} |
| 1425 | }; |
| 1426 | |
| 1427 | static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive) |
| 1428 | { |
| 1429 | return idecd_proc; |
| 1430 | } |
| 1431 | |
| 1432 | static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive) |
| 1433 | { |
| 1434 | return NULL; |
| 1435 | } |
| 1436 | #endif |
| 1437 | |
| 1438 | static const struct cd_list_entry ide_cd_quirks_list[] = { |
| 1439 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ |
| 1440 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT }, |
| 1441 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ |
| 1442 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD | |
| 1443 | IDE_AFLAG_PRE_ATAPI12, }, |
| 1444 | /* Vertos 300, some versions of this drive like to talk BCD. */ |
| 1445 | { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, }, |
| 1446 | /* Vertos 600 ESD. */ |
| 1447 | { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, }, |
| 1448 | /* |
| 1449 | * Sanyo 3 CD changer uses a non-standard command for CD changing |
| 1450 | * (by default standard ATAPI support for CD changers is used). |
| 1451 | */ |
| 1452 | { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD }, |
| 1453 | { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD }, |
| 1454 | { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD }, |
| 1455 | /* Stingray 8X CD-ROM. */ |
| 1456 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 }, |
| 1457 | /* |
| 1458 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length |
| 1459 | * mode sense page capabilities size, but older drives break. |
| 1460 | */ |
| 1461 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE }, |
| 1462 | { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE }, |
| 1463 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ |
| 1464 | { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS }, |
| 1465 | /* |
| 1466 | * Some drives used by Apple don't advertise audio play |
| 1467 | * but they do support reading TOC & audio datas. |
| 1468 | */ |
| 1469 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
| 1470 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
| 1471 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
| 1472 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
| 1473 | { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
| 1474 | { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
| 1475 | { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE }, |
| 1476 | { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE }, |
| 1477 | { NULL, NULL, 0 } |
| 1478 | }; |
| 1479 | |
| 1480 | static unsigned int ide_cd_flags(u16 *id) |
| 1481 | { |
| 1482 | const struct cd_list_entry *cle = ide_cd_quirks_list; |
| 1483 | |
| 1484 | while (cle->id_model) { |
| 1485 | if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 && |
| 1486 | (cle->id_firmware == NULL || |
| 1487 | strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware))) |
| 1488 | return cle->cd_flags; |
| 1489 | cle++; |
| 1490 | } |
| 1491 | |
| 1492 | return 0; |
| 1493 | } |
| 1494 | |
| 1495 | static int ide_cdrom_setup(ide_drive_t *drive) |
| 1496 | { |
| 1497 | struct cdrom_info *cd = drive->driver_data; |
| 1498 | struct cdrom_device_info *cdi = &cd->devinfo; |
| 1499 | struct request_queue *q = drive->queue; |
| 1500 | u16 *id = drive->id; |
| 1501 | char *fw_rev = (char *)&id[ATA_ID_FW_REV]; |
| 1502 | int nslots; |
| 1503 | |
| 1504 | ide_debug_log(IDE_DBG_PROBE, "enter"); |
| 1505 | |
| 1506 | blk_queue_prep_rq(q, ide_cdrom_prep_fn); |
| 1507 | blk_queue_dma_alignment(q, 31); |
| 1508 | blk_queue_update_dma_pad(q, 15); |
| 1509 | |
| 1510 | drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED; |
| 1511 | drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id); |
| 1512 | |
| 1513 | if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) && |
| 1514 | fw_rev[4] == '1' && fw_rev[6] <= '2') |
| 1515 | drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD | |
| 1516 | IDE_AFLAG_TOCADDR_AS_BCD); |
| 1517 | else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) && |
| 1518 | fw_rev[4] == '1' && fw_rev[6] <= '2') |
| 1519 | drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD; |
| 1520 | else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD) |
| 1521 | /* 3 => use CD in slot 0 */ |
| 1522 | cdi->sanyo_slot = 3; |
| 1523 | |
| 1524 | nslots = ide_cdrom_probe_capabilities(drive); |
| 1525 | |
| 1526 | blk_queue_logical_block_size(q, CD_FRAMESIZE); |
| 1527 | |
| 1528 | if (ide_cdrom_register(drive, nslots)) { |
| 1529 | printk(KERN_ERR PFX "%s: %s failed to register device with the" |
| 1530 | " cdrom driver.\n", drive->name, __func__); |
| 1531 | cd->devinfo.handle = NULL; |
| 1532 | return 1; |
| 1533 | } |
| 1534 | |
| 1535 | ide_proc_register_driver(drive, cd->driver); |
| 1536 | return 0; |
| 1537 | } |
| 1538 | |
| 1539 | static void ide_cd_remove(ide_drive_t *drive) |
| 1540 | { |
| 1541 | struct cdrom_info *info = drive->driver_data; |
| 1542 | |
| 1543 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 1544 | |
| 1545 | ide_proc_unregister_driver(drive, info->driver); |
| 1546 | device_del(&info->dev); |
| 1547 | del_gendisk(info->disk); |
| 1548 | |
| 1549 | mutex_lock(&idecd_ref_mutex); |
| 1550 | put_device(&info->dev); |
| 1551 | mutex_unlock(&idecd_ref_mutex); |
| 1552 | } |
| 1553 | |
| 1554 | static void ide_cd_release(struct device *dev) |
| 1555 | { |
| 1556 | struct cdrom_info *info = to_ide_drv(dev, cdrom_info); |
| 1557 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 1558 | ide_drive_t *drive = info->drive; |
| 1559 | struct gendisk *g = info->disk; |
| 1560 | |
| 1561 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 1562 | |
| 1563 | kfree(info->toc); |
| 1564 | if (devinfo->handle == drive) |
| 1565 | unregister_cdrom(devinfo); |
| 1566 | drive->driver_data = NULL; |
| 1567 | blk_queue_prep_rq(drive->queue, NULL); |
| 1568 | g->private_data = NULL; |
| 1569 | put_disk(g); |
| 1570 | kfree(info); |
| 1571 | } |
| 1572 | |
| 1573 | static int ide_cd_probe(ide_drive_t *); |
| 1574 | |
| 1575 | static struct ide_driver ide_cdrom_driver = { |
| 1576 | .gen_driver = { |
| 1577 | .owner = THIS_MODULE, |
| 1578 | .name = "ide-cdrom", |
| 1579 | .bus = &ide_bus_type, |
| 1580 | }, |
| 1581 | .probe = ide_cd_probe, |
| 1582 | .remove = ide_cd_remove, |
| 1583 | .version = IDECD_VERSION, |
| 1584 | .do_request = ide_cd_do_request, |
| 1585 | #ifdef CONFIG_IDE_PROC_FS |
| 1586 | .proc_entries = ide_cd_proc_entries, |
| 1587 | .proc_devsets = ide_cd_proc_devsets, |
| 1588 | #endif |
| 1589 | }; |
| 1590 | |
| 1591 | static int idecd_open(struct block_device *bdev, fmode_t mode) |
| 1592 | { |
| 1593 | struct cdrom_info *info; |
| 1594 | int rc = -ENXIO; |
| 1595 | |
| 1596 | mutex_lock(&ide_cd_mutex); |
| 1597 | info = ide_cd_get(bdev->bd_disk); |
| 1598 | if (!info) |
| 1599 | goto out; |
| 1600 | |
| 1601 | rc = cdrom_open(&info->devinfo, bdev, mode); |
| 1602 | if (rc < 0) |
| 1603 | ide_cd_put(info); |
| 1604 | out: |
| 1605 | mutex_unlock(&ide_cd_mutex); |
| 1606 | return rc; |
| 1607 | } |
| 1608 | |
| 1609 | static int idecd_release(struct gendisk *disk, fmode_t mode) |
| 1610 | { |
| 1611 | struct cdrom_info *info = ide_drv_g(disk, cdrom_info); |
| 1612 | |
| 1613 | mutex_lock(&ide_cd_mutex); |
| 1614 | cdrom_release(&info->devinfo, mode); |
| 1615 | |
| 1616 | ide_cd_put(info); |
| 1617 | mutex_unlock(&ide_cd_mutex); |
| 1618 | |
| 1619 | return 0; |
| 1620 | } |
| 1621 | |
| 1622 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 1623 | { |
| 1624 | struct packet_command cgc; |
| 1625 | char buffer[16]; |
| 1626 | int stat; |
| 1627 | char spindown; |
| 1628 | |
| 1629 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) |
| 1630 | return -EFAULT; |
| 1631 | |
| 1632 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 1633 | |
| 1634 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 1635 | if (stat) |
| 1636 | return stat; |
| 1637 | |
| 1638 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); |
| 1639 | return cdrom_mode_select(cdi, &cgc); |
| 1640 | } |
| 1641 | |
| 1642 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 1643 | { |
| 1644 | struct packet_command cgc; |
| 1645 | char buffer[16]; |
| 1646 | int stat; |
| 1647 | char spindown; |
| 1648 | |
| 1649 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 1650 | |
| 1651 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 1652 | if (stat) |
| 1653 | return stat; |
| 1654 | |
| 1655 | spindown = buffer[11] & 0x0f; |
| 1656 | if (copy_to_user((void __user *)arg, &spindown, sizeof(char))) |
| 1657 | return -EFAULT; |
| 1658 | return 0; |
| 1659 | } |
| 1660 | |
| 1661 | static int idecd_locked_ioctl(struct block_device *bdev, fmode_t mode, |
| 1662 | unsigned int cmd, unsigned long arg) |
| 1663 | { |
| 1664 | struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info); |
| 1665 | int err; |
| 1666 | |
| 1667 | switch (cmd) { |
| 1668 | case CDROMSETSPINDOWN: |
| 1669 | return idecd_set_spindown(&info->devinfo, arg); |
| 1670 | case CDROMGETSPINDOWN: |
| 1671 | return idecd_get_spindown(&info->devinfo, arg); |
| 1672 | default: |
| 1673 | break; |
| 1674 | } |
| 1675 | |
| 1676 | err = generic_ide_ioctl(info->drive, bdev, cmd, arg); |
| 1677 | if (err == -EINVAL) |
| 1678 | err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg); |
| 1679 | |
| 1680 | return err; |
| 1681 | } |
| 1682 | |
| 1683 | static int idecd_ioctl(struct block_device *bdev, fmode_t mode, |
| 1684 | unsigned int cmd, unsigned long arg) |
| 1685 | { |
| 1686 | int ret; |
| 1687 | |
| 1688 | mutex_lock(&ide_cd_mutex); |
| 1689 | ret = idecd_locked_ioctl(bdev, mode, cmd, arg); |
| 1690 | mutex_unlock(&ide_cd_mutex); |
| 1691 | |
| 1692 | return ret; |
| 1693 | } |
| 1694 | |
| 1695 | |
| 1696 | static unsigned int idecd_check_events(struct gendisk *disk, |
| 1697 | unsigned int clearing) |
| 1698 | { |
| 1699 | struct cdrom_info *info = ide_drv_g(disk, cdrom_info); |
| 1700 | return cdrom_check_events(&info->devinfo, clearing); |
| 1701 | } |
| 1702 | |
| 1703 | static int idecd_revalidate_disk(struct gendisk *disk) |
| 1704 | { |
| 1705 | struct cdrom_info *info = ide_drv_g(disk, cdrom_info); |
| 1706 | struct request_sense sense; |
| 1707 | |
| 1708 | ide_cd_read_toc(info->drive, &sense); |
| 1709 | |
| 1710 | return 0; |
| 1711 | } |
| 1712 | |
| 1713 | static const struct block_device_operations idecd_ops = { |
| 1714 | .owner = THIS_MODULE, |
| 1715 | .open = idecd_open, |
| 1716 | .release = idecd_release, |
| 1717 | .ioctl = idecd_ioctl, |
| 1718 | .check_events = idecd_check_events, |
| 1719 | .revalidate_disk = idecd_revalidate_disk |
| 1720 | }; |
| 1721 | |
| 1722 | /* module options */ |
| 1723 | static unsigned long debug_mask; |
| 1724 | module_param(debug_mask, ulong, 0644); |
| 1725 | |
| 1726 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); |
| 1727 | |
| 1728 | static int ide_cd_probe(ide_drive_t *drive) |
| 1729 | { |
| 1730 | struct cdrom_info *info; |
| 1731 | struct gendisk *g; |
| 1732 | struct request_sense sense; |
| 1733 | |
| 1734 | ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x", |
| 1735 | drive->driver_req, drive->media); |
| 1736 | |
| 1737 | if (!strstr("ide-cdrom", drive->driver_req)) |
| 1738 | goto failed; |
| 1739 | |
| 1740 | if (drive->media != ide_cdrom && drive->media != ide_optical) |
| 1741 | goto failed; |
| 1742 | |
| 1743 | drive->debug_mask = debug_mask; |
| 1744 | drive->irq_handler = cdrom_newpc_intr; |
| 1745 | |
| 1746 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
| 1747 | if (info == NULL) { |
| 1748 | printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n", |
| 1749 | drive->name); |
| 1750 | goto failed; |
| 1751 | } |
| 1752 | |
| 1753 | g = alloc_disk(1 << PARTN_BITS); |
| 1754 | if (!g) |
| 1755 | goto out_free_cd; |
| 1756 | |
| 1757 | ide_init_disk(g, drive); |
| 1758 | |
| 1759 | info->dev.parent = &drive->gendev; |
| 1760 | info->dev.release = ide_cd_release; |
| 1761 | dev_set_name(&info->dev, dev_name(&drive->gendev)); |
| 1762 | |
| 1763 | if (device_register(&info->dev)) |
| 1764 | goto out_free_disk; |
| 1765 | |
| 1766 | info->drive = drive; |
| 1767 | info->driver = &ide_cdrom_driver; |
| 1768 | info->disk = g; |
| 1769 | |
| 1770 | g->private_data = &info->driver; |
| 1771 | |
| 1772 | drive->driver_data = info; |
| 1773 | |
| 1774 | g->minors = 1; |
| 1775 | g->driverfs_dev = &drive->gendev; |
| 1776 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; |
| 1777 | if (ide_cdrom_setup(drive)) { |
| 1778 | put_device(&info->dev); |
| 1779 | goto failed; |
| 1780 | } |
| 1781 | |
| 1782 | ide_cd_read_toc(drive, &sense); |
| 1783 | g->fops = &idecd_ops; |
| 1784 | g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE; |
| 1785 | add_disk(g); |
| 1786 | return 0; |
| 1787 | |
| 1788 | out_free_disk: |
| 1789 | put_disk(g); |
| 1790 | out_free_cd: |
| 1791 | kfree(info); |
| 1792 | failed: |
| 1793 | return -ENODEV; |
| 1794 | } |
| 1795 | |
| 1796 | static void __exit ide_cdrom_exit(void) |
| 1797 | { |
| 1798 | driver_unregister(&ide_cdrom_driver.gen_driver); |
| 1799 | } |
| 1800 | |
| 1801 | static int __init ide_cdrom_init(void) |
| 1802 | { |
| 1803 | printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n"); |
| 1804 | return driver_register(&ide_cdrom_driver.gen_driver); |
| 1805 | } |
| 1806 | |
| 1807 | MODULE_ALIAS("ide:*m-cdrom*"); |
| 1808 | MODULE_ALIAS("ide-cd"); |
| 1809 | module_init(ide_cdrom_init); |
| 1810 | module_exit(ide_cdrom_exit); |
| 1811 | MODULE_LICENSE("GPL"); |