Root/
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"); |
1812 |
Branches:
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javiroman/ks7010
jz-2.6.34
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9