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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_DATA(inode)); | |
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"); |