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1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/ide-cd.c | |
3 | * | |
4 | * Copyright (C) 1994, 1995, 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 | * | |
8 | * May be copied or modified under the terms of the GNU General Public | |
9 | * License. See linux/COPYING for more information. | |
10 | * | |
11 | * ATAPI CD-ROM driver. To be used with ide.c. | |
12 | * See Documentation/cdrom/ide-cd for usage information. | |
13 | * | |
14 | * Suggestions are welcome. Patches that work are more welcome though. ;-) | |
15 | * For those wishing to work on this driver, please be sure you download | |
16 | * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI | |
17 | * (SFF-8020i rev 2.6) standards. These documents can be obtained by | |
18 | * anonymous ftp from: | |
19 | * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps | |
20 | * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf | |
21 | * | |
22 | * Drives that deviate from these standards will be accommodated as much | |
23 | * as possible via compile time or command-line options. Since I only have | |
24 | * a few drives, you generally need to send me patches... | |
25 | * | |
26 | * ---------------------------------- | |
27 | * TO DO LIST: | |
28 | * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on | |
29 | * boot | |
30 | * | |
03553353 BZ |
31 | * For historical changelog please see: |
32 | * Documentation/ide/ChangeLog.ide-cd.1994-2004 | |
33 | */ | |
34 | ||
1da177e4 LT |
35 | #define IDECD_VERSION "4.61" |
36 | ||
1da177e4 LT |
37 | #include <linux/module.h> |
38 | #include <linux/types.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/timer.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/interrupt.h> | |
44 | #include <linux/errno.h> | |
45 | #include <linux/cdrom.h> | |
46 | #include <linux/ide.h> | |
47 | #include <linux/completion.h> | |
cf8b8975 | 48 | #include <linux/mutex.h> |
9a6dc668 | 49 | #include <linux/bcd.h> |
1da177e4 LT |
50 | |
51 | #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */ | |
52 | ||
53 | #include <asm/irq.h> | |
54 | #include <asm/io.h> | |
55 | #include <asm/byteorder.h> | |
56 | #include <asm/uaccess.h> | |
57 | #include <asm/unaligned.h> | |
58 | ||
59 | #include "ide-cd.h" | |
60 | ||
cf8b8975 | 61 | static DEFINE_MUTEX(idecd_ref_mutex); |
1da177e4 LT |
62 | |
63 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) | |
64 | ||
65 | #define ide_cd_g(disk) \ | |
66 | container_of((disk)->private_data, struct cdrom_info, driver) | |
67 | ||
68 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) | |
69 | { | |
70 | struct cdrom_info *cd = NULL; | |
71 | ||
cf8b8975 | 72 | mutex_lock(&idecd_ref_mutex); |
1da177e4 LT |
73 | cd = ide_cd_g(disk); |
74 | if (cd) | |
75 | kref_get(&cd->kref); | |
cf8b8975 | 76 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
77 | return cd; |
78 | } | |
79 | ||
80 | static void ide_cd_release(struct kref *); | |
81 | ||
82 | static void ide_cd_put(struct cdrom_info *cd) | |
83 | { | |
cf8b8975 | 84 | mutex_lock(&idecd_ref_mutex); |
1da177e4 | 85 | kref_put(&cd->kref, ide_cd_release); |
cf8b8975 | 86 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
87 | } |
88 | ||
89 | /**************************************************************************** | |
90 | * Generic packet command support and error handling routines. | |
91 | */ | |
92 | ||
93 | /* Mark that we've seen a media change, and invalidate our internal | |
94 | buffers. */ | |
95 | static void cdrom_saw_media_change (ide_drive_t *drive) | |
96 | { | |
0ba11211 BZ |
97 | struct cdrom_info *cd = drive->driver_data; |
98 | ||
2bc4cf2d BZ |
99 | cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED; |
100 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; | |
0ba11211 | 101 | cd->nsectors_buffered = 0; |
1da177e4 LT |
102 | } |
103 | ||
104 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, | |
105 | struct request_sense *sense) | |
106 | { | |
107 | int log = 0; | |
108 | ||
4aff5e23 | 109 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
110 | return 0; |
111 | ||
112 | switch (sense->sense_key) { | |
113 | case NO_SENSE: case RECOVERED_ERROR: | |
114 | break; | |
115 | case NOT_READY: | |
116 | /* | |
117 | * don't care about tray state messages for | |
118 | * e.g. capacity commands or in-progress or | |
119 | * becoming ready | |
120 | */ | |
121 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
122 | break; | |
123 | log = 1; | |
124 | break; | |
125 | case ILLEGAL_REQUEST: | |
126 | /* | |
127 | * don't log START_STOP unit with LoEj set, since | |
128 | * we cannot reliably check if drive can auto-close | |
129 | */ | |
130 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
dbe217af AC |
131 | break; |
132 | log = 1; | |
1da177e4 LT |
133 | break; |
134 | case UNIT_ATTENTION: | |
135 | /* | |
136 | * Make good and sure we've seen this potential media | |
137 | * change. Some drives (i.e. Creative) fail to present | |
138 | * the correct sense key in the error register. | |
139 | */ | |
140 | cdrom_saw_media_change(drive); | |
141 | break; | |
142 | default: | |
143 | log = 1; | |
144 | break; | |
145 | } | |
146 | return log; | |
147 | } | |
148 | ||
149 | static | |
150 | void cdrom_analyze_sense_data(ide_drive_t *drive, | |
151 | struct request *failed_command, | |
152 | struct request_sense *sense) | |
153 | { | |
dbe217af AC |
154 | unsigned long sector; |
155 | unsigned long bio_sectors; | |
156 | unsigned long valid; | |
157 | struct cdrom_info *info = drive->driver_data; | |
158 | ||
1da177e4 LT |
159 | if (!cdrom_log_sense(drive, failed_command, sense)) |
160 | return; | |
161 | ||
162 | /* | |
163 | * If a read toc is executed for a CD-R or CD-RW medium where | |
164 | * the first toc has not been recorded yet, it will fail with | |
165 | * 05/24/00 (which is a confusing error) | |
166 | */ | |
167 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
168 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
169 | return; | |
170 | ||
dbe217af AC |
171 | if (sense->error_code == 0x70) { /* Current Error */ |
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 | !blk_fs_request(failed_command)) | |
180 | break; | |
181 | sector = (sense->information[0] << 24) | | |
182 | (sense->information[1] << 16) | | |
183 | (sense->information[2] << 8) | | |
184 | (sense->information[3]); | |
185 | ||
186 | bio_sectors = bio_sectors(failed_command->bio); | |
187 | if (bio_sectors < 4) | |
188 | bio_sectors = 4; | |
189 | if (drive->queue->hardsect_size == 2048) | |
190 | sector <<= 2; /* Device sector size is 2K */ | |
191 | sector &= ~(bio_sectors -1); | |
192 | valid = (sector - failed_command->sector) << 9; | |
193 | ||
194 | if (valid < 0) | |
195 | valid = 0; | |
196 | if (sector < get_capacity(info->disk) && | |
197 | drive->probed_capacity - sector < 4 * 75) { | |
198 | set_capacity(info->disk, sector); | |
199 | } | |
200 | } | |
201 | } | |
1da177e4 | 202 | |
972560fb | 203 | ide_cd_log_error(drive->name, failed_command, sense); |
1da177e4 LT |
204 | } |
205 | ||
206 | /* | |
207 | * Initialize a ide-cd packet command request | |
208 | */ | |
17802998 | 209 | void ide_cd_init_rq(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
210 | { |
211 | struct cdrom_info *cd = drive->driver_data; | |
212 | ||
213 | ide_init_drive_cmd(rq); | |
cea2885a | 214 | rq->cmd_type = REQ_TYPE_ATA_PC; |
1da177e4 LT |
215 | rq->rq_disk = cd->disk; |
216 | } | |
217 | ||
218 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, | |
219 | struct request *failed_command) | |
220 | { | |
221 | struct cdrom_info *info = drive->driver_data; | |
222 | struct request *rq = &info->request_sense_request; | |
223 | ||
224 | if (sense == NULL) | |
225 | sense = &info->sense_data; | |
226 | ||
227 | /* stuff the sense request in front of our current request */ | |
139c829d | 228 | ide_cd_init_rq(drive, rq); |
1da177e4 LT |
229 | |
230 | rq->data = sense; | |
231 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
232 | rq->cmd[4] = rq->data_len = 18; | |
233 | ||
4aff5e23 | 234 | rq->cmd_type = REQ_TYPE_SENSE; |
1da177e4 LT |
235 | |
236 | /* NOTE! Save the failed command in "rq->buffer" */ | |
237 | rq->buffer = (void *) failed_command; | |
238 | ||
239 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
240 | } | |
241 | ||
242 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) | |
243 | { | |
244 | struct request *rq = HWGROUP(drive)->rq; | |
245 | int nsectors = rq->hard_cur_sectors; | |
246 | ||
4aff5e23 | 247 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 248 | /* |
4aff5e23 JA |
249 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
250 | * failed request | |
1da177e4 LT |
251 | */ |
252 | struct request *failed = (struct request *) rq->buffer; | |
253 | struct cdrom_info *info = drive->driver_data; | |
254 | void *sense = &info->sense_data; | |
255 | unsigned long flags; | |
256 | ||
257 | if (failed) { | |
258 | if (failed->sense) { | |
259 | sense = failed->sense; | |
260 | failed->sense_len = rq->sense_len; | |
261 | } | |
dbe217af | 262 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 LT |
263 | /* |
264 | * now end failed request | |
265 | */ | |
dbe217af AC |
266 | if (blk_fs_request(failed)) { |
267 | if (ide_end_dequeued_request(drive, failed, 0, | |
268 | failed->hard_nr_sectors)) | |
269 | BUG(); | |
270 | } else { | |
271 | spin_lock_irqsave(&ide_lock, flags); | |
5e36bb6e KU |
272 | if (__blk_end_request(failed, -EIO, |
273 | failed->data_len)) | |
274 | BUG(); | |
dbe217af AC |
275 | spin_unlock_irqrestore(&ide_lock, flags); |
276 | } | |
277 | } else | |
278 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
279 | } |
280 | ||
281 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
282 | uptodate = 1; | |
283 | /* make sure it's fully ended */ | |
284 | if (blk_pc_request(rq)) | |
285 | nsectors = (rq->data_len + 511) >> 9; | |
286 | if (!nsectors) | |
287 | nsectors = 1; | |
288 | ||
289 | ide_end_request(drive, uptodate, nsectors); | |
290 | } | |
291 | ||
dbe217af AC |
292 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
293 | { | |
294 | if (stat & 0x80) | |
295 | return; | |
296 | ide_dump_status(drive, msg, stat); | |
297 | } | |
298 | ||
1da177e4 LT |
299 | /* Returns 0 if the request should be continued. |
300 | Returns 1 if the request was ended. */ | |
301 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) | |
302 | { | |
303 | struct request *rq = HWGROUP(drive)->rq; | |
304 | int stat, err, sense_key; | |
305 | ||
306 | /* Check for errors. */ | |
307 | stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
308 | if (stat_ret) | |
309 | *stat_ret = stat; | |
310 | ||
311 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
312 | return 0; | |
313 | ||
314 | /* Get the IDE error register. */ | |
315 | err = HWIF(drive)->INB(IDE_ERROR_REG); | |
316 | sense_key = err >> 4; | |
317 | ||
318 | if (rq == NULL) { | |
319 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); | |
320 | return 1; | |
321 | } | |
322 | ||
4aff5e23 | 323 | if (blk_sense_request(rq)) { |
1da177e4 LT |
324 | /* We got an error trying to get sense info |
325 | from the drive (probably while trying | |
326 | to recover from a former error). Just give up. */ | |
327 | ||
4aff5e23 | 328 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
329 | cdrom_end_request(drive, 0); |
330 | ide_error(drive, "request sense failure", stat); | |
331 | return 1; | |
332 | ||
8770c018 | 333 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 334 | /* All other functions, except for READ. */ |
1da177e4 LT |
335 | |
336 | /* | |
337 | * if we have an error, pass back CHECK_CONDITION as the | |
338 | * scsi status byte | |
339 | */ | |
b7156731 | 340 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
341 | rq->errors = SAM_STAT_CHECK_CONDITION; |
342 | ||
343 | /* Check for tray open. */ | |
344 | if (sense_key == NOT_READY) { | |
345 | cdrom_saw_media_change (drive); | |
346 | } else if (sense_key == UNIT_ATTENTION) { | |
347 | /* Check for media change. */ | |
348 | cdrom_saw_media_change (drive); | |
349 | /*printk("%s: media changed\n",drive->name);*/ | |
350 | return 0; | |
76ca1af1 SH |
351 | } else if ((sense_key == ILLEGAL_REQUEST) && |
352 | (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { | |
353 | /* | |
354 | * Don't print error message for this condition-- | |
355 | * SFF8090i indicates that 5/24/00 is the correct | |
356 | * response to a request to close the tray if the | |
357 | * drive doesn't have that capability. | |
358 | * cdrom_log_sense() knows this! | |
359 | */ | |
4aff5e23 | 360 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
1da177e4 LT |
361 | /* Otherwise, print an error. */ |
362 | ide_dump_status(drive, "packet command error", stat); | |
363 | } | |
364 | ||
4aff5e23 | 365 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
366 | |
367 | /* | |
368 | * instead of playing games with moving completions around, | |
369 | * remove failed request completely and end it when the | |
370 | * request sense has completed | |
371 | */ | |
bbb89e3d | 372 | goto end_request; |
1da177e4 LT |
373 | |
374 | } else if (blk_fs_request(rq)) { | |
375 | int do_end_request = 0; | |
376 | ||
377 | /* Handle errors from READ and WRITE requests. */ | |
378 | ||
379 | if (blk_noretry_request(rq)) | |
380 | do_end_request = 1; | |
381 | ||
382 | if (sense_key == NOT_READY) { | |
383 | /* Tray open. */ | |
384 | if (rq_data_dir(rq) == READ) { | |
385 | cdrom_saw_media_change (drive); | |
386 | ||
387 | /* Fail the request. */ | |
388 | printk ("%s: tray open\n", drive->name); | |
389 | do_end_request = 1; | |
390 | } else { | |
391 | struct cdrom_info *info = drive->driver_data; | |
392 | ||
393 | /* allow the drive 5 seconds to recover, some | |
394 | * devices will return this error while flushing | |
395 | * data from cache */ | |
396 | if (!rq->errors) | |
397 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; | |
398 | rq->errors = 1; | |
399 | if (time_after(jiffies, info->write_timeout)) | |
400 | do_end_request = 1; | |
401 | else { | |
402 | unsigned long flags; | |
403 | ||
404 | /* | |
405 | * take a breather relying on the | |
406 | * unplug timer to kick us again | |
407 | */ | |
408 | spin_lock_irqsave(&ide_lock, flags); | |
409 | blk_plug_device(drive->queue); | |
410 | spin_unlock_irqrestore(&ide_lock,flags); | |
411 | return 1; | |
412 | } | |
413 | } | |
414 | } else if (sense_key == UNIT_ATTENTION) { | |
415 | /* Media change. */ | |
416 | cdrom_saw_media_change (drive); | |
417 | ||
418 | /* Arrange to retry the request. | |
419 | But be sure to give up if we've retried | |
420 | too many times. */ | |
421 | if (++rq->errors > ERROR_MAX) | |
422 | do_end_request = 1; | |
423 | } else if (sense_key == ILLEGAL_REQUEST || | |
424 | sense_key == DATA_PROTECT) { | |
425 | /* No point in retrying after an illegal | |
426 | request or data protect error.*/ | |
dbe217af | 427 | ide_dump_status_no_sense (drive, "command error", stat); |
1da177e4 LT |
428 | do_end_request = 1; |
429 | } else if (sense_key == MEDIUM_ERROR) { | |
430 | /* No point in re-trying a zillion times on a bad | |
431 | * sector... If we got here the error is not correctable */ | |
dbe217af | 432 | ide_dump_status_no_sense (drive, "media error (bad sector)", stat); |
1da177e4 LT |
433 | do_end_request = 1; |
434 | } else if (sense_key == BLANK_CHECK) { | |
435 | /* Disk appears blank ?? */ | |
dbe217af | 436 | ide_dump_status_no_sense (drive, "media error (blank)", stat); |
1da177e4 LT |
437 | do_end_request = 1; |
438 | } else if ((err & ~ABRT_ERR) != 0) { | |
439 | /* Go to the default handler | |
440 | for other errors. */ | |
441 | ide_error(drive, "cdrom_decode_status", stat); | |
442 | return 1; | |
443 | } else if ((++rq->errors > ERROR_MAX)) { | |
444 | /* We've racked up too many retries. Abort. */ | |
445 | do_end_request = 1; | |
446 | } | |
447 | ||
dbe217af AC |
448 | /* End a request through request sense analysis when we have |
449 | sense data. We need this in order to perform end of media | |
450 | processing */ | |
451 | ||
bbb89e3d BZ |
452 | if (do_end_request) |
453 | goto end_request; | |
dbe217af | 454 | |
bbb89e3d BZ |
455 | /* |
456 | * If we got a CHECK_CONDITION status, | |
457 | * queue a request sense command. | |
458 | */ | |
459 | if (stat & ERR_STAT) | |
460 | cdrom_queue_request_sense(drive, NULL, NULL); | |
1da177e4 LT |
461 | } else { |
462 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); | |
463 | cdrom_end_request(drive, 0); | |
464 | } | |
465 | ||
466 | /* Retry, or handle the next request. */ | |
467 | return 1; | |
bbb89e3d BZ |
468 | |
469 | end_request: | |
470 | if (stat & ERR_STAT) { | |
471 | unsigned long flags; | |
472 | ||
473 | spin_lock_irqsave(&ide_lock, flags); | |
474 | blkdev_dequeue_request(rq); | |
475 | HWGROUP(drive)->rq = NULL; | |
476 | spin_unlock_irqrestore(&ide_lock, flags); | |
477 | ||
478 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
479 | } else | |
480 | cdrom_end_request(drive, 0); | |
481 | ||
482 | return 1; | |
1da177e4 LT |
483 | } |
484 | ||
485 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
486 | { | |
487 | struct request *rq = HWGROUP(drive)->rq; | |
488 | unsigned long wait = 0; | |
489 | ||
490 | /* | |
491 | * Some commands are *slow* and normally take a long time to | |
492 | * complete. Usually we can use the ATAPI "disconnect" to bypass | |
493 | * this, but not all commands/drives support that. Let | |
494 | * ide_timer_expiry keep polling us for these. | |
495 | */ | |
496 | switch (rq->cmd[0]) { | |
497 | case GPCMD_BLANK: | |
498 | case GPCMD_FORMAT_UNIT: | |
499 | case GPCMD_RESERVE_RZONE_TRACK: | |
500 | case GPCMD_CLOSE_TRACK: | |
501 | case GPCMD_FLUSH_CACHE: | |
502 | wait = ATAPI_WAIT_PC; | |
503 | break; | |
504 | default: | |
4aff5e23 | 505 | if (!(rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
506 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
507 | wait = 0; | |
508 | break; | |
509 | } | |
510 | return wait; | |
511 | } | |
512 | ||
513 | /* Set up the device registers for transferring a packet command on DEV, | |
514 | expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
515 | which actually transfers the command to the drive. If this is a | |
516 | drq_interrupt device, this routine will arrange for HANDLER to be | |
517 | called when the interrupt from the drive arrives. Otherwise, HANDLER | |
518 | will be called immediately after the drive is prepared for the transfer. */ | |
519 | ||
520 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, | |
521 | int xferlen, | |
522 | ide_handler_t *handler) | |
523 | { | |
524 | ide_startstop_t startstop; | |
525 | struct cdrom_info *info = drive->driver_data; | |
526 | ide_hwif_t *hwif = drive->hwif; | |
527 | ||
528 | /* Wait for the controller to be idle. */ | |
529 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) | |
530 | return startstop; | |
531 | ||
3a6a3549 | 532 | /* FIXME: for Virtual DMA we must check harder */ |
1da177e4 LT |
533 | if (info->dma) |
534 | info->dma = !hwif->dma_setup(drive); | |
535 | ||
536 | /* Set up the controller registers. */ | |
2fc57388 BZ |
537 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
538 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); | |
4fe67178 | 539 | |
2bc4cf2d | 540 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
f0dd8712 AL |
541 | /* waiting for CDB interrupt, not DMA yet. */ |
542 | if (info->dma) | |
543 | drive->waiting_for_dma = 0; | |
544 | ||
1da177e4 LT |
545 | /* packet command */ |
546 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
547 | return ide_started; | |
548 | } else { | |
549 | unsigned long flags; | |
550 | ||
551 | /* packet command */ | |
552 | spin_lock_irqsave(&ide_lock, flags); | |
553 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); | |
554 | ndelay(400); | |
555 | spin_unlock_irqrestore(&ide_lock, flags); | |
556 | ||
557 | return (*handler) (drive); | |
558 | } | |
559 | } | |
560 | ||
561 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. | |
562 | The device registers must have already been prepared | |
563 | by cdrom_start_packet_command. | |
564 | HANDLER is the interrupt handler to call when the command completes | |
565 | or there's data ready. */ | |
1da177e4 LT |
566 | #define ATAPI_MIN_CDB_BYTES 12 |
567 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, | |
568 | struct request *rq, | |
569 | ide_handler_t *handler) | |
570 | { | |
571 | ide_hwif_t *hwif = drive->hwif; | |
572 | int cmd_len; | |
573 | struct cdrom_info *info = drive->driver_data; | |
574 | ide_startstop_t startstop; | |
575 | ||
2bc4cf2d | 576 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
577 | /* Here we should have been called after receiving an interrupt |
578 | from the device. DRQ should how be set. */ | |
579 | ||
580 | /* Check for errors. */ | |
581 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) | |
582 | return ide_stopped; | |
f0dd8712 AL |
583 | |
584 | /* Ok, next interrupt will be DMA interrupt. */ | |
585 | if (info->dma) | |
586 | drive->waiting_for_dma = 1; | |
1da177e4 LT |
587 | } else { |
588 | /* Otherwise, we must wait for DRQ to get set. */ | |
589 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, | |
590 | BUSY_STAT, WAIT_READY)) | |
591 | return startstop; | |
592 | } | |
593 | ||
594 | /* Arm the interrupt handler. */ | |
595 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); | |
596 | ||
597 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
598 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
599 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
600 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
601 | ||
602 | /* Send the command to the device. */ | |
603 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); | |
604 | ||
605 | /* Start the DMA if need be */ | |
606 | if (info->dma) | |
607 | hwif->dma_start(drive); | |
608 | ||
609 | return ide_started; | |
610 | } | |
611 | ||
612 | /**************************************************************************** | |
613 | * Block read functions. | |
614 | */ | |
615 | ||
68661c53 BZ |
616 | typedef void (xfer_func_t)(ide_drive_t *, void *, u32); |
617 | ||
5a5222d9 BZ |
618 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
619 | { | |
620 | while (len > 0) { | |
621 | int dum = 0; | |
622 | xf(drive, &dum, sizeof(dum)); | |
623 | len -= sizeof(dum); | |
624 | } | |
625 | } | |
626 | ||
b4ab726c BZ |
627 | static void ide_cd_drain_data(ide_drive_t *drive, int nsects) |
628 | { | |
629 | while (nsects > 0) { | |
630 | static char dum[SECTOR_SIZE]; | |
631 | ||
632 | drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum)); | |
633 | nsects--; | |
634 | } | |
635 | } | |
636 | ||
1da177e4 LT |
637 | /* |
638 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector | |
639 | * buffer. Once the first sector is added, any subsequent sectors are | |
640 | * assumed to be continuous (until the buffer is cleared). For the first | |
641 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until | |
642 | * the buffer is cleared.) | |
643 | */ | |
644 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, | |
645 | int sectors_to_transfer) | |
646 | { | |
647 | struct cdrom_info *info = drive->driver_data; | |
648 | ||
649 | /* Number of sectors to read into the buffer. */ | |
650 | int sectors_to_buffer = min_t(int, sectors_to_transfer, | |
651 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - | |
652 | info->nsectors_buffered); | |
653 | ||
654 | char *dest; | |
655 | ||
656 | /* If we couldn't get a buffer, don't try to buffer anything... */ | |
657 | if (info->buffer == NULL) | |
658 | sectors_to_buffer = 0; | |
659 | ||
660 | /* If this is the first sector in the buffer, remember its number. */ | |
661 | if (info->nsectors_buffered == 0) | |
662 | info->sector_buffered = sector; | |
663 | ||
664 | /* Read the data into the buffer. */ | |
665 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; | |
666 | while (sectors_to_buffer > 0) { | |
667 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); | |
668 | --sectors_to_buffer; | |
669 | --sectors_to_transfer; | |
670 | ++info->nsectors_buffered; | |
671 | dest += SECTOR_SIZE; | |
672 | } | |
673 | ||
674 | /* Throw away any remaining data. */ | |
b4ab726c | 675 | ide_cd_drain_data(drive, sectors_to_transfer); |
1da177e4 LT |
676 | } |
677 | ||
678 | /* | |
679 | * Check the contents of the interrupt reason register from the cdrom | |
680 | * and attempt to recover if there are problems. Returns 0 if everything's | |
681 | * ok; nonzero if the request has been terminated. | |
682 | */ | |
858119e1 | 683 | static |
0d6f7e3a | 684 | int ide_cd_check_ireason(ide_drive_t *drive, int len, int ireason, int rw) |
1da177e4 | 685 | { |
0d6f7e3a BZ |
686 | /* |
687 | * ireason == 0: the drive wants to receive data from us | |
688 | * ireason == 2: the drive is expecting to transfer data to us | |
689 | */ | |
690 | if (ireason == (!rw << 1)) | |
1da177e4 | 691 | return 0; |
0d6f7e3a | 692 | else if (ireason == (rw << 1)) { |
5a5222d9 | 693 | ide_hwif_t *hwif = drive->hwif; |
0d6f7e3a | 694 | xfer_func_t *xf; |
5a5222d9 | 695 | |
0d6f7e3a | 696 | /* Whoops... */ |
35379c07 BZ |
697 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
698 | drive->name, __FUNCTION__); | |
1da177e4 | 699 | |
0d6f7e3a BZ |
700 | xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes; |
701 | ide_cd_pad_transfer(drive, xf, len); | |
702 | } else if (rw == 0 && ireason == 1) { | |
1da177e4 LT |
703 | /* Some drives (ASUS) seem to tell us that status |
704 | * info is available. just get it and ignore. | |
705 | */ | |
706 | (void) HWIF(drive)->INB(IDE_STATUS_REG); | |
707 | return 0; | |
708 | } else { | |
709 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
710 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
711 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
712 | } |
713 | ||
714 | cdrom_end_request(drive, 0); | |
715 | return -1; | |
716 | } | |
717 | ||
64814f23 BZ |
718 | /* |
719 | * Assume that the drive will always provide data in multiples of at least | |
720 | * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. | |
721 | */ | |
722 | static int ide_cd_check_transfer_size(ide_drive_t *drive, int len) | |
723 | { | |
724 | struct cdrom_info *cd = drive->driver_data; | |
725 | ||
726 | if ((len % SECTOR_SIZE) == 0) | |
727 | return 0; | |
728 | ||
729 | printk(KERN_ERR "%s: %s: Bad transfer size %d\n", | |
730 | drive->name, __FUNCTION__, len); | |
731 | ||
732 | if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) | |
733 | printk(KERN_ERR " This drive is not supported by " | |
734 | "this version of the driver\n"); | |
735 | else { | |
736 | printk(KERN_ERR " Trying to limit transfer sizes\n"); | |
737 | cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; | |
738 | } | |
739 | ||
740 | return 1; | |
741 | } | |
742 | ||
1da177e4 LT |
743 | /* |
744 | * Try to satisfy some of the current read request from our cached data. | |
745 | * Returns nonzero if the request has been completed, zero otherwise. | |
746 | */ | |
747 | static int cdrom_read_from_buffer (ide_drive_t *drive) | |
748 | { | |
749 | struct cdrom_info *info = drive->driver_data; | |
750 | struct request *rq = HWGROUP(drive)->rq; | |
751 | unsigned short sectors_per_frame; | |
752 | ||
753 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
754 | ||
755 | /* Can't do anything if there's no buffer. */ | |
756 | if (info->buffer == NULL) return 0; | |
757 | ||
758 | /* Loop while this request needs data and the next block is present | |
759 | in our cache. */ | |
760 | while (rq->nr_sectors > 0 && | |
761 | rq->sector >= info->sector_buffered && | |
762 | rq->sector < info->sector_buffered + info->nsectors_buffered) { | |
763 | if (rq->current_nr_sectors == 0) | |
764 | cdrom_end_request(drive, 1); | |
765 | ||
766 | memcpy (rq->buffer, | |
767 | info->buffer + | |
768 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, | |
769 | SECTOR_SIZE); | |
770 | rq->buffer += SECTOR_SIZE; | |
771 | --rq->current_nr_sectors; | |
772 | --rq->nr_sectors; | |
773 | ++rq->sector; | |
774 | } | |
775 | ||
776 | /* If we've satisfied the current request, | |
777 | terminate it successfully. */ | |
778 | if (rq->nr_sectors == 0) { | |
779 | cdrom_end_request(drive, 1); | |
780 | return -1; | |
781 | } | |
782 | ||
783 | /* Move on to the next buffer if needed. */ | |
784 | if (rq->current_nr_sectors == 0) | |
785 | cdrom_end_request(drive, 1); | |
786 | ||
787 | /* If this condition does not hold, then the kluge i use to | |
788 | represent the number of sectors to skip at the start of a transfer | |
789 | will fail. I think that this will never happen, but let's be | |
790 | paranoid and check. */ | |
791 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && | |
792 | (rq->sector & (sectors_per_frame - 1))) { | |
793 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", | |
794 | drive->name, (long)rq->sector); | |
795 | cdrom_end_request(drive, 0); | |
796 | return -1; | |
797 | } | |
798 | ||
799 | return 0; | |
800 | } | |
801 | ||
0041e7c6 | 802 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); |
94f5a86d | 803 | |
1da177e4 | 804 | /* |
29f3aaca BZ |
805 | * Routine to send a read/write packet command to the drive. |
806 | * This is usually called directly from cdrom_start_{read,write}(). | |
1da177e4 LT |
807 | * However, for drq_interrupt devices, it is called from an interrupt |
808 | * when the drive is ready to accept the command. | |
809 | */ | |
29f3aaca | 810 | static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive) |
1da177e4 LT |
811 | { |
812 | struct request *rq = HWGROUP(drive)->rq; | |
1da177e4 | 813 | |
29f3aaca BZ |
814 | if (rq_data_dir(rq) == READ) { |
815 | unsigned short sectors_per_frame = | |
816 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
817 | int nskip = rq->sector & (sectors_per_frame - 1); | |
1da177e4 | 818 | |
29f3aaca BZ |
819 | /* |
820 | * If the requested sector doesn't start on a frame boundary, | |
821 | * we must adjust the start of the transfer so that it does, | |
822 | * and remember to skip the first few sectors. | |
823 | * | |
824 | * If the rq->current_nr_sectors field is larger than the size | |
825 | * of the buffer, it will mean that we're to skip a number of | |
826 | * sectors equal to the amount by which rq->current_nr_sectors | |
827 | * is larger than the buffer size. | |
828 | */ | |
829 | if (nskip > 0) { | |
830 | /* Sanity check... */ | |
831 | if (rq->current_nr_sectors != | |
832 | bio_cur_sectors(rq->bio)) { | |
833 | printk(KERN_ERR "%s: %s: buffer botch (%u)\n", | |
834 | drive->name, __FUNCTION__, | |
835 | rq->current_nr_sectors); | |
836 | cdrom_end_request(drive, 0); | |
837 | return ide_stopped; | |
838 | } | |
839 | rq->current_nr_sectors += nskip; | |
1da177e4 | 840 | } |
1da177e4 | 841 | } |
29f3aaca BZ |
842 | #if 0 |
843 | else | |
844 | /* the immediate bit */ | |
845 | rq->cmd[1] = 1 << 3; | |
846 | #endif | |
1da177e4 LT |
847 | /* Set up the command */ |
848 | rq->timeout = ATAPI_WAIT_PC; | |
849 | ||
850 | /* Send the command to the drive and return. */ | |
0041e7c6 | 851 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
1da177e4 LT |
852 | } |
853 | ||
1da177e4 LT |
854 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
855 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ | |
856 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ | |
857 | ||
858 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) | |
859 | { | |
860 | struct cdrom_info *info = drive->driver_data; | |
861 | int stat; | |
862 | static int retry = 10; | |
863 | ||
864 | if (cdrom_decode_status(drive, 0, &stat)) | |
865 | return ide_stopped; | |
4fe67178 | 866 | |
2bc4cf2d | 867 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
868 | |
869 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { | |
870 | if (--retry == 0) { | |
871 | /* | |
872 | * this condition is far too common, to bother | |
873 | * users about it | |
874 | */ | |
875 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ | |
876 | drive->dsc_overlap = 0; | |
877 | } | |
878 | } | |
879 | return ide_stopped; | |
880 | } | |
881 | ||
882 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) | |
883 | { | |
884 | struct request *rq = HWGROUP(drive)->rq; | |
885 | sector_t frame = rq->sector; | |
886 | ||
887 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); | |
888 | ||
889 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
890 | rq->cmd[0] = GPCMD_SEEK; | |
891 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); | |
892 | ||
893 | rq->timeout = ATAPI_WAIT_PC; | |
894 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); | |
895 | } | |
896 | ||
897 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) | |
898 | { | |
899 | struct cdrom_info *info = drive->driver_data; | |
900 | ||
901 | info->dma = 0; | |
1da177e4 LT |
902 | info->start_seek = jiffies; |
903 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); | |
904 | } | |
905 | ||
906 | /* Fix up a possibly partially-processed request so that we can | |
907 | start it over entirely, or even put it back on the request queue. */ | |
908 | static void restore_request (struct request *rq) | |
909 | { | |
910 | if (rq->buffer != bio_data(rq->bio)) { | |
911 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; | |
912 | ||
913 | rq->buffer = bio_data(rq->bio); | |
914 | rq->nr_sectors += n; | |
915 | rq->sector -= n; | |
916 | } | |
917 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); | |
918 | rq->hard_nr_sectors = rq->nr_sectors; | |
919 | rq->hard_sector = rq->sector; | |
920 | rq->q->prep_rq_fn(rq->q, rq); | |
921 | } | |
922 | ||
1da177e4 LT |
923 | /**************************************************************************** |
924 | * Execute all other packet commands. | |
925 | */ | |
926 | ||
8ee69f5a BZ |
927 | static void ide_cd_request_sense_fixup(struct request *rq) |
928 | { | |
929 | /* | |
930 | * Some of the trailing request sense fields are optional, | |
931 | * and some drives don't send them. Sigh. | |
932 | */ | |
933 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
934 | rq->data_len > 0 && rq->data_len <= 5) | |
935 | while (rq->data_len > 0) { | |
936 | *(u8 *)rq->data++ = 0; | |
937 | --rq->data_len; | |
938 | } | |
939 | } | |
940 | ||
17802998 | 941 | int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
942 | { |
943 | struct request_sense sense; | |
944 | int retries = 10; | |
4aff5e23 | 945 | unsigned int flags = rq->cmd_flags; |
1da177e4 LT |
946 | |
947 | if (rq->sense == NULL) | |
948 | rq->sense = &sense; | |
949 | ||
950 | /* Start of retry loop. */ | |
951 | do { | |
952 | int error; | |
953 | unsigned long time = jiffies; | |
4aff5e23 | 954 | rq->cmd_flags = flags; |
1da177e4 LT |
955 | |
956 | error = ide_do_drive_cmd(drive, rq, ide_wait); | |
957 | time = jiffies - time; | |
958 | ||
959 | /* FIXME: we should probably abort/retry or something | |
960 | * in case of failure */ | |
4aff5e23 | 961 | if (rq->cmd_flags & REQ_FAILED) { |
1da177e4 LT |
962 | /* The request failed. Retry if it was due to a unit |
963 | attention status | |
964 | (usually means media was changed). */ | |
965 | struct request_sense *reqbuf = rq->sense; | |
966 | ||
967 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
968 | cdrom_saw_media_change(drive); | |
969 | else if (reqbuf->sense_key == NOT_READY && | |
970 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
971 | /* The drive is in the process of loading | |
972 | a disk. Retry, but wait a little to give | |
973 | the drive time to complete the load. */ | |
974 | ssleep(2); | |
975 | } else { | |
976 | /* Otherwise, don't retry. */ | |
977 | retries = 0; | |
978 | } | |
979 | --retries; | |
980 | } | |
981 | ||
982 | /* End of retry loop. */ | |
4aff5e23 | 983 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
1da177e4 LT |
984 | |
985 | /* Return an error if the command failed. */ | |
4aff5e23 | 986 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
987 | } |
988 | ||
aaa04c28 KU |
989 | /* |
990 | * Called from blk_end_request_callback() after the data of the request | |
991 | * is completed and before the request is completed. | |
992 | * By returning value '1', blk_end_request_callback() returns immediately | |
993 | * without completing the request. | |
994 | */ | |
995 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) | |
996 | { | |
997 | return 1; | |
998 | } | |
999 | ||
1da177e4 LT |
1000 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
1001 | { | |
1002 | struct cdrom_info *info = drive->driver_data; | |
1003 | struct request *rq = HWGROUP(drive)->rq; | |
1da177e4 | 1004 | xfer_func_t *xferfunc; |
0041e7c6 | 1005 | ide_expiry_t *expiry = NULL; |
ff1bfbc1 BZ |
1006 | int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0; |
1007 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; | |
1008 | unsigned int timeout; | |
1009 | u8 lowcyl, highcyl; | |
1da177e4 LT |
1010 | |
1011 | /* Check for errors. */ | |
1da177e4 LT |
1012 | dma = info->dma; |
1013 | if (dma) { | |
1014 | info->dma = 0; | |
1015 | dma_error = HWIF(drive)->ide_dma_end(drive); | |
eba15fba BZ |
1016 | if (dma_error) { |
1017 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
ff1bfbc1 | 1018 | write ? "write" : "read"); |
eba15fba BZ |
1019 | ide_dma_off(drive); |
1020 | } | |
1da177e4 LT |
1021 | } |
1022 | ||
1023 | if (cdrom_decode_status(drive, 0, &stat)) | |
1024 | return ide_stopped; | |
1025 | ||
1026 | /* | |
1027 | * using dma, transfer is complete now | |
1028 | */ | |
1029 | if (dma) { | |
eba15fba | 1030 | if (dma_error) |
1da177e4 | 1031 | return ide_error(drive, "dma error", stat); |
0041e7c6 BZ |
1032 | if (blk_fs_request(rq)) { |
1033 | ide_end_request(drive, 1, rq->nr_sectors); | |
1034 | return ide_stopped; | |
1035 | } | |
ff1bfbc1 | 1036 | goto end_request; |
1da177e4 LT |
1037 | } |
1038 | ||
1039 | /* | |
1040 | * ok we fall to pio :/ | |
1041 | */ | |
1042 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; | |
1043 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
1044 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1045 | ||
1046 | len = lowcyl + (256 * highcyl); | |
0041e7c6 BZ |
1047 | |
1048 | thislen = blk_fs_request(rq) ? len : rq->data_len; | |
1da177e4 LT |
1049 | if (thislen > len) |
1050 | thislen = len; | |
1051 | ||
1052 | /* | |
1053 | * If DRQ is clear, the command has completed. | |
1054 | */ | |
aaa04c28 | 1055 | if ((stat & DRQ_STAT) == 0) { |
0041e7c6 BZ |
1056 | if (blk_fs_request(rq)) { |
1057 | /* | |
1058 | * If we're not done reading/writing, complain. | |
1059 | * Otherwise, complete the command normally. | |
1060 | */ | |
1061 | uptodate = 1; | |
1062 | if (rq->current_nr_sectors > 0) { | |
1063 | printk(KERN_ERR "%s: %s: data underrun " | |
1064 | "(%d blocks)\n", | |
1065 | drive->name, __FUNCTION__, | |
1066 | rq->current_nr_sectors); | |
1067 | if (!write) | |
1068 | rq->cmd_flags |= REQ_FAILED; | |
1069 | uptodate = 0; | |
1070 | } | |
1071 | cdrom_end_request(drive, uptodate); | |
1072 | return ide_stopped; | |
1073 | } else if (!blk_pc_request(rq)) { | |
ff1bfbc1 BZ |
1074 | ide_cd_request_sense_fixup(rq); |
1075 | /* Complain if we still have data left to transfer. */ | |
1076 | uptodate = rq->data_len ? 0 : 1; | |
1077 | } | |
1078 | goto end_request; | |
aaa04c28 | 1079 | } |
1da177e4 LT |
1080 | |
1081 | /* | |
1082 | * check which way to transfer data | |
1083 | */ | |
0d6f7e3a BZ |
1084 | if (blk_fs_request(rq) || blk_pc_request(rq)) { |
1085 | if (ide_cd_check_ireason(drive, len, ireason, write)) | |
1da177e4 | 1086 | return ide_stopped; |
0041e7c6 | 1087 | |
0d6f7e3a | 1088 | if (blk_fs_request(rq) && write == 0) { |
0041e7c6 BZ |
1089 | int nskip; |
1090 | ||
1091 | if (ide_cd_check_transfer_size(drive, len)) { | |
1092 | cdrom_end_request(drive, 0); | |
1093 | return ide_stopped; | |
1094 | } | |
1095 | ||
1096 | /* | |
1097 | * First, figure out if we need to bit-bucket | |
1098 | * any of the leading sectors. | |
1099 | */ | |
1100 | nskip = min_t(int, rq->current_nr_sectors | |
1101 | - bio_cur_sectors(rq->bio), | |
1102 | thislen >> 9); | |
1103 | if (nskip > 0) { | |
1104 | ide_cd_drain_data(drive, nskip); | |
1105 | rq->current_nr_sectors -= nskip; | |
1106 | thislen -= (nskip << 9); | |
1107 | } | |
1108 | } | |
ff1bfbc1 | 1109 | } |
1da177e4 | 1110 | |
ff1bfbc1 BZ |
1111 | if (ireason == 0) { |
1112 | write = 1; | |
1113 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
0041e7c6 BZ |
1114 | } else if (ireason == 2 || (ireason == 1 && |
1115 | (blk_fs_request(rq) || blk_pc_request(rq)))) { | |
ff1bfbc1 | 1116 | write = 0; |
1da177e4 | 1117 | xferfunc = HWIF(drive)->atapi_input_bytes; |
ff1bfbc1 BZ |
1118 | } else { |
1119 | printk(KERN_ERR "%s: %s: The drive " | |
1120 | "appears confused (ireason = 0x%02x). " | |
1121 | "Trying to recover by ending request.\n", | |
1122 | drive->name, __FUNCTION__, ireason); | |
1123 | goto end_request; | |
1da177e4 LT |
1124 | } |
1125 | ||
1126 | /* | |
1127 | * transfer data | |
1128 | */ | |
1129 | while (thislen > 0) { | |
0041e7c6 | 1130 | u8 *ptr = blk_fs_request(rq) ? NULL : rq->data; |
a11e77db | 1131 | int blen = rq->data_len; |
1da177e4 LT |
1132 | |
1133 | /* | |
1134 | * bio backed? | |
1135 | */ | |
1136 | if (rq->bio) { | |
0041e7c6 BZ |
1137 | if (blk_fs_request(rq)) { |
1138 | ptr = rq->buffer; | |
1139 | blen = rq->current_nr_sectors << 9; | |
1140 | } else { | |
1141 | ptr = bio_data(rq->bio); | |
1142 | blen = bio_iovec(rq->bio)->bv_len; | |
1143 | } | |
1da177e4 LT |
1144 | } |
1145 | ||
1146 | if (!ptr) { | |
0041e7c6 BZ |
1147 | if (blk_fs_request(rq) && !write) |
1148 | /* | |
1149 | * If the buffers are full, cache the rest | |
1150 | * of the data in our internal buffer. | |
1151 | */ | |
1152 | cdrom_buffer_sectors(drive, rq->sector, | |
1153 | thislen >> 9); | |
1154 | else { | |
1155 | printk(KERN_ERR "%s: confused, missing data\n", | |
1156 | drive->name); | |
1157 | blk_dump_rq_flags(rq, rq_data_dir(rq) | |
1158 | ? "cdrom_newpc_intr, write" | |
1159 | : "cdrom_newpc_intr, read"); | |
1160 | } | |
1da177e4 LT |
1161 | break; |
1162 | } | |
1163 | ||
1164 | if (blen > thislen) | |
1165 | blen = thislen; | |
1166 | ||
1167 | xferfunc(drive, ptr, blen); | |
1168 | ||
1169 | thislen -= blen; | |
1170 | len -= blen; | |
1da177e4 | 1171 | |
0041e7c6 BZ |
1172 | if (blk_fs_request(rq)) { |
1173 | rq->buffer += blen; | |
1174 | rq->nr_sectors -= (blen >> 9); | |
1175 | rq->current_nr_sectors -= (blen >> 9); | |
1176 | rq->sector += (blen >> 9); | |
1177 | ||
1178 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1179 | cdrom_end_request(drive, 1); | |
1180 | } else { | |
1181 | rq->data_len -= blen; | |
1182 | ||
aaa04c28 KU |
1183 | /* |
1184 | * The request can't be completed until DRQ is cleared. | |
1185 | * So complete the data, but don't complete the request | |
1186 | * using the dummy function for the callback feature | |
1187 | * of blk_end_request_callback(). | |
1188 | */ | |
0041e7c6 BZ |
1189 | if (rq->bio) |
1190 | blk_end_request_callback(rq, 0, blen, | |
aaa04c28 | 1191 | cdrom_newpc_intr_dummy_cb); |
0041e7c6 BZ |
1192 | else |
1193 | rq->data += blen; | |
1194 | } | |
1da177e4 LT |
1195 | } |
1196 | ||
ff1bfbc1 BZ |
1197 | if (write && blk_sense_request(rq)) |
1198 | rq->sense_len += thislen; | |
1199 | ||
1da177e4 LT |
1200 | /* |
1201 | * pad, if necessary | |
1202 | */ | |
0041e7c6 | 1203 | if (!blk_fs_request(rq) && len > 0) |
5a5222d9 | 1204 | ide_cd_pad_transfer(drive, xferfunc, len); |
1da177e4 | 1205 | |
ff1bfbc1 BZ |
1206 | if (blk_pc_request(rq)) { |
1207 | timeout = rq->timeout; | |
ff1bfbc1 BZ |
1208 | } else { |
1209 | timeout = ATAPI_WAIT_PC; | |
0041e7c6 BZ |
1210 | if (!blk_fs_request(rq)) |
1211 | expiry = cdrom_timer_expiry; | |
ff1bfbc1 BZ |
1212 | } |
1213 | ||
1214 | ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); | |
1da177e4 | 1215 | return ide_started; |
ff1bfbc1 BZ |
1216 | |
1217 | end_request: | |
1218 | if (blk_pc_request(rq)) { | |
1219 | unsigned long flags; | |
1220 | ||
1221 | spin_lock_irqsave(&ide_lock, flags); | |
1222 | if (__blk_end_request(rq, 0, rq->data_len)) | |
1223 | BUG(); | |
1224 | HWGROUP(drive)->rq = NULL; | |
1225 | spin_unlock_irqrestore(&ide_lock, flags); | |
1226 | } else { | |
1227 | if (!uptodate) | |
1228 | rq->cmd_flags |= REQ_FAILED; | |
1229 | cdrom_end_request(drive, uptodate); | |
1230 | } | |
1231 | return ide_stopped; | |
1da177e4 LT |
1232 | } |
1233 | ||
21ea1f0f | 1234 | static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) |
1da177e4 | 1235 | { |
21ea1f0f BZ |
1236 | struct cdrom_info *cd = drive->driver_data; |
1237 | int write = rq_data_dir(rq) == WRITE; | |
1238 | unsigned short sectors_per_frame = | |
1239 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1da177e4 | 1240 | |
21ea1f0f BZ |
1241 | if (write) { |
1242 | /* | |
1243 | * disk has become write protected | |
1244 | */ | |
1245 | if (cd->disk->policy) { | |
1246 | cdrom_end_request(drive, 0); | |
1247 | return ide_stopped; | |
1248 | } | |
1249 | } else { | |
1250 | /* | |
1251 | * We may be retrying this request after an error. Fix up any | |
1252 | * weirdness which might be present in the request packet. | |
1253 | */ | |
1254 | restore_request(rq); | |
1255 | ||
1256 | /* Satisfy whatever we can of this request from our cache. */ | |
1257 | if (cdrom_read_from_buffer(drive)) | |
1258 | return ide_stopped; | |
1da177e4 LT |
1259 | } |
1260 | ||
1261 | /* | |
21ea1f0f | 1262 | * use DMA, if possible / writes *must* be hardware frame aligned |
1da177e4 | 1263 | */ |
21ea1f0f BZ |
1264 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
1265 | (rq->sector & (sectors_per_frame - 1))) { | |
1266 | if (write) { | |
1267 | cdrom_end_request(drive, 0); | |
1268 | return ide_stopped; | |
1269 | } | |
1270 | cd->dma = 0; | |
1271 | } else | |
1272 | cd->dma = drive->using_dma; | |
1da177e4 | 1273 | |
21ea1f0f BZ |
1274 | /* Clear the local sector buffer. */ |
1275 | cd->nsectors_buffered = 0; | |
1da177e4 | 1276 | |
21ea1f0f BZ |
1277 | if (write) |
1278 | cd->devinfo.media_written = 1; | |
1da177e4 | 1279 | |
21ea1f0f | 1280 | /* Start sending the read/write request to the drive. */ |
29f3aaca | 1281 | return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont); |
1da177e4 LT |
1282 | } |
1283 | ||
1284 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1285 | { | |
1286 | struct request *rq = HWGROUP(drive)->rq; | |
1287 | ||
1288 | if (!rq->timeout) | |
1289 | rq->timeout = ATAPI_WAIT_PC; | |
1290 | ||
1291 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); | |
1292 | } | |
1293 | ||
1294 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) | |
1295 | { | |
1296 | struct cdrom_info *info = drive->driver_data; | |
1297 | ||
c9f56a80 BZ |
1298 | if (blk_pc_request(rq)) |
1299 | rq->cmd_flags |= REQ_QUIET; | |
1300 | else | |
1301 | rq->cmd_flags &= ~REQ_FAILED; | |
1da177e4 LT |
1302 | |
1303 | info->dma = 0; | |
1da177e4 LT |
1304 | |
1305 | /* | |
1306 | * sg request | |
1307 | */ | |
1308 | if (rq->bio) { | |
1309 | int mask = drive->queue->dma_alignment; | |
1310 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); | |
1311 | ||
1da177e4 LT |
1312 | info->dma = drive->using_dma; |
1313 | ||
1314 | /* | |
1315 | * check if dma is safe | |
5d9e4ea5 LT |
1316 | * |
1317 | * NOTE! The "len" and "addr" checks should possibly have | |
1318 | * separate masks. | |
1da177e4 | 1319 | */ |
4e7c6816 | 1320 | if ((rq->data_len & 15) || (addr & mask)) |
1da177e4 LT |
1321 | info->dma = 0; |
1322 | } | |
1323 | ||
1324 | /* Start sending the command to the drive. */ | |
1325 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); | |
1326 | } | |
1327 | ||
1328 | /**************************************************************************** | |
1329 | * cdrom driver request routine. | |
1330 | */ | |
1331 | static ide_startstop_t | |
1332 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) | |
1333 | { | |
1334 | ide_startstop_t action; | |
1335 | struct cdrom_info *info = drive->driver_data; | |
1336 | ||
1337 | if (blk_fs_request(rq)) { | |
2bc4cf2d | 1338 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
1da177e4 LT |
1339 | unsigned long elapsed = jiffies - info->start_seek; |
1340 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
1341 | ||
1342 | if ((stat & SEEK_STAT) != SEEK_STAT) { | |
1343 | if (elapsed < IDECD_SEEK_TIMEOUT) { | |
1344 | ide_stall_queue(drive, IDECD_SEEK_TIMER); | |
1345 | return ide_stopped; | |
1346 | } | |
1347 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); | |
1348 | } | |
2bc4cf2d | 1349 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
1350 | } |
1351 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { | |
1352 | action = cdrom_start_seek(drive, block); | |
21ea1f0f BZ |
1353 | } else |
1354 | action = cdrom_start_rw(drive, rq); | |
1da177e4 LT |
1355 | info->last_block = block; |
1356 | return action; | |
c9f56a80 | 1357 | } else if (blk_sense_request(rq) || blk_pc_request(rq) || |
cea2885a | 1358 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 1359 | return cdrom_do_block_pc(drive, rq); |
4aff5e23 | 1360 | } else if (blk_special_request(rq)) { |
1da177e4 LT |
1361 | /* |
1362 | * right now this can only be a reset... | |
1363 | */ | |
1364 | cdrom_end_request(drive, 1); | |
1365 | return ide_stopped; | |
1366 | } | |
1367 | ||
1368 | blk_dump_rq_flags(rq, "ide-cd bad flags"); | |
1369 | cdrom_end_request(drive, 0); | |
1370 | return ide_stopped; | |
1371 | } | |
1372 | ||
1373 | ||
1374 | ||
1375 | /**************************************************************************** | |
1376 | * Ioctl handling. | |
1377 | * | |
1378 | * Routines which queue packet commands take as a final argument a pointer | |
1379 | * to a request_sense struct. If execution of the command results | |
1380 | * in an error with a CHECK CONDITION status, this structure will be filled | |
1381 | * with the results of the subsequent request sense command. The pointer | |
1382 | * can also be NULL, in which case no sense information is returned. | |
1383 | */ | |
1384 | ||
1da177e4 LT |
1385 | static |
1386 | void msf_from_bcd (struct atapi_msf *msf) | |
1387 | { | |
9a6dc668 BZ |
1388 | msf->minute = BCD2BIN(msf->minute); |
1389 | msf->second = BCD2BIN(msf->second); | |
1390 | msf->frame = BCD2BIN(msf->frame); | |
1da177e4 LT |
1391 | } |
1392 | ||
1da177e4 LT |
1393 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
1394 | { | |
1395 | struct request req; | |
1396 | struct cdrom_info *info = drive->driver_data; | |
1397 | struct cdrom_device_info *cdi = &info->devinfo; | |
1398 | ||
139c829d | 1399 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1400 | |
1401 | req.sense = sense; | |
1402 | req.cmd[0] = GPCMD_TEST_UNIT_READY; | |
4aff5e23 | 1403 | req.cmd_flags |= REQ_QUIET; |
1da177e4 | 1404 | |
cdf6000d BZ |
1405 | /* |
1406 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to | |
1407 | * switch CDs instead of supporting the LOAD_UNLOAD opcode. | |
1408 | */ | |
1da177e4 | 1409 | req.cmd[7] = cdi->sanyo_slot % 3; |
1da177e4 | 1410 | |
139c829d | 1411 | return ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1412 | } |
1413 | ||
1da177e4 | 1414 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ |
17802998 BZ |
1415 | int ide_cd_lockdoor(ide_drive_t *drive, int lockflag, |
1416 | struct request_sense *sense) | |
1da177e4 | 1417 | { |
4fe67178 | 1418 | struct cdrom_info *cd = drive->driver_data; |
1da177e4 LT |
1419 | struct request_sense my_sense; |
1420 | struct request req; | |
1421 | int stat; | |
1422 | ||
1423 | if (sense == NULL) | |
1424 | sense = &my_sense; | |
1425 | ||
1426 | /* If the drive cannot lock the door, just pretend. */ | |
2bc4cf2d | 1427 | if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) { |
1da177e4 LT |
1428 | stat = 0; |
1429 | } else { | |
139c829d | 1430 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1431 | req.sense = sense; |
1432 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; | |
1433 | req.cmd[4] = lockflag ? 1 : 0; | |
139c829d | 1434 | stat = ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1435 | } |
1436 | ||
1437 | /* If we got an illegal field error, the drive | |
1438 | probably cannot lock the door. */ | |
1439 | if (stat != 0 && | |
1440 | sense->sense_key == ILLEGAL_REQUEST && | |
1441 | (sense->asc == 0x24 || sense->asc == 0x20)) { | |
1442 | printk (KERN_ERR "%s: door locking not supported\n", | |
1443 | drive->name); | |
2bc4cf2d | 1444 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
1da177e4 LT |
1445 | stat = 0; |
1446 | } | |
1447 | ||
1448 | /* no medium, that's alright. */ | |
1449 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) | |
1450 | stat = 0; | |
1451 | ||
2bc4cf2d BZ |
1452 | if (stat == 0) { |
1453 | if (lockflag) | |
1454 | cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED; | |
1455 | else | |
1456 | cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED; | |
1457 | } | |
1da177e4 LT |
1458 | |
1459 | return stat; | |
1460 | } | |
1461 | ||
1462 | ||
1463 | /* Eject the disk if EJECTFLAG is 0. | |
1464 | If EJECTFLAG is 1, try to reload the disk. */ | |
1465 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, | |
1466 | struct request_sense *sense) | |
1467 | { | |
3f1b86d8 BZ |
1468 | struct cdrom_info *cd = drive->driver_data; |
1469 | struct cdrom_device_info *cdi = &cd->devinfo; | |
1da177e4 LT |
1470 | struct request req; |
1471 | char loej = 0x02; | |
1472 | ||
2bc4cf2d | 1473 | if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag) |
1da177e4 | 1474 | return -EDRIVE_CANT_DO_THIS; |
4fe67178 | 1475 | |
1da177e4 | 1476 | /* reload fails on some drives, if the tray is locked */ |
2bc4cf2d | 1477 | if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag) |
1da177e4 LT |
1478 | return 0; |
1479 | ||
139c829d | 1480 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1481 | |
1482 | /* only tell drive to close tray if open, if it can do that */ | |
3f1b86d8 | 1483 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) |
1da177e4 LT |
1484 | loej = 0; |
1485 | ||
1486 | req.sense = sense; | |
1487 | req.cmd[0] = GPCMD_START_STOP_UNIT; | |
1488 | req.cmd[4] = loej | (ejectflag != 0); | |
139c829d BZ |
1489 | |
1490 | return ide_cd_queue_pc(drive, &req); | |
1da177e4 LT |
1491 | } |
1492 | ||
1493 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, | |
1494 | unsigned long *sectors_per_frame, | |
1495 | struct request_sense *sense) | |
1496 | { | |
1497 | struct { | |
1498 | __u32 lba; | |
1499 | __u32 blocklen; | |
1500 | } capbuf; | |
1501 | ||
1502 | int stat; | |
1503 | struct request req; | |
1504 | ||
139c829d | 1505 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1506 | |
1507 | req.sense = sense; | |
1508 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
1509 | req.data = (char *)&capbuf; | |
1510 | req.data_len = sizeof(capbuf); | |
4aff5e23 | 1511 | req.cmd_flags |= REQ_QUIET; |
1da177e4 | 1512 | |
139c829d | 1513 | stat = ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1514 | if (stat == 0) { |
1515 | *capacity = 1 + be32_to_cpu(capbuf.lba); | |
1516 | *sectors_per_frame = | |
1517 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; | |
1518 | } | |
1519 | ||
1520 | return stat; | |
1521 | } | |
1522 | ||
1523 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
1524 | int format, char *buf, int buflen, | |
1525 | struct request_sense *sense) | |
1526 | { | |
1527 | struct request req; | |
1528 | ||
139c829d | 1529 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1530 | |
1531 | req.sense = sense; | |
1532 | req.data = buf; | |
1533 | req.data_len = buflen; | |
4aff5e23 | 1534 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1535 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
1536 | req.cmd[6] = trackno; | |
1537 | req.cmd[7] = (buflen >> 8); | |
1538 | req.cmd[8] = (buflen & 0xff); | |
1539 | req.cmd[9] = (format << 6); | |
1540 | ||
1541 | if (msf_flag) | |
1542 | req.cmd[1] = 2; | |
1543 | ||
139c829d | 1544 | return ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1545 | } |
1546 | ||
1da177e4 | 1547 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
17802998 | 1548 | int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 LT |
1549 | { |
1550 | int stat, ntracks, i; | |
1551 | struct cdrom_info *info = drive->driver_data; | |
1552 | struct cdrom_device_info *cdi = &info->devinfo; | |
1553 | struct atapi_toc *toc = info->toc; | |
1554 | struct { | |
1555 | struct atapi_toc_header hdr; | |
1556 | struct atapi_toc_entry ent; | |
1557 | } ms_tmp; | |
1558 | long last_written; | |
1559 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
1560 | ||
1561 | if (toc == NULL) { | |
1562 | /* Try to allocate space. */ | |
2a91f3e5 | 1563 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 LT |
1564 | if (toc == NULL) { |
1565 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); | |
1566 | return -ENOMEM; | |
1567 | } | |
2a91f3e5 | 1568 | info->toc = toc; |
1da177e4 LT |
1569 | } |
1570 | ||
1571 | /* Check to see if the existing data is still valid. | |
1572 | If it is, just return. */ | |
1573 | (void) cdrom_check_status(drive, sense); | |
1574 | ||
2bc4cf2d | 1575 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
1da177e4 LT |
1576 | return 0; |
1577 | ||
1578 | /* Try to get the total cdrom capacity and sector size. */ | |
1579 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, | |
1580 | sense); | |
1581 | if (stat) | |
1582 | toc->capacity = 0x1fffff; | |
1583 | ||
1584 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af AC |
1585 | /* Save a private copy of te TOC capacity for error handling */ |
1586 | drive->probed_capacity = toc->capacity * sectors_per_frame; | |
1587 | ||
1da177e4 LT |
1588 | blk_queue_hardsect_size(drive->queue, |
1589 | sectors_per_frame << SECTOR_BITS); | |
1590 | ||
1591 | /* First read just the header, so we know how long the TOC is. */ | |
1592 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, | |
1593 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
1594 | if (stat) |
1595 | return stat; | |
1da177e4 | 1596 | |
2bc4cf2d | 1597 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1598 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1599 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1600 | } |
1da177e4 LT |
1601 | |
1602 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
1603 | if (ntracks <= 0) | |
1604 | return -EIO; | |
1605 | if (ntracks > MAX_TRACKS) | |
1606 | ntracks = MAX_TRACKS; | |
1607 | ||
1608 | /* Now read the whole schmeer. */ | |
1609 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, | |
1610 | (char *)&toc->hdr, | |
1611 | sizeof(struct atapi_toc_header) + | |
1612 | (ntracks + 1) * | |
1613 | sizeof(struct atapi_toc_entry), sense); | |
1614 | ||
1615 | if (stat && toc->hdr.first_track > 1) { | |
1616 | /* Cds with CDI tracks only don't have any TOC entries, | |
1617 | despite of this the returned values are | |
1618 | first_track == last_track = number of CDI tracks + 1, | |
1619 | so that this case is indistinguishable from the same | |
1620 | layout plus an additional audio track. | |
1621 | If we get an error for the regular case, we assume | |
1622 | a CDI without additional audio tracks. In this case | |
1623 | the readable TOC is empty (CDI tracks are not included) | |
96de0e25 | 1624 | and only holds the Leadout entry. Heiko Eißfeldt */ |
1da177e4 LT |
1625 | ntracks = 0; |
1626 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
1627 | (char *)&toc->hdr, | |
1628 | sizeof(struct atapi_toc_header) + | |
1629 | (ntracks + 1) * | |
1630 | sizeof(struct atapi_toc_entry), | |
1631 | sense); | |
cdf6000d | 1632 | if (stat) |
1da177e4 | 1633 | return stat; |
cdf6000d | 1634 | |
2bc4cf2d | 1635 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1636 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
1637 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); | |
cdf6000d | 1638 | } else { |
1da177e4 LT |
1639 | toc->hdr.first_track = CDROM_LEADOUT; |
1640 | toc->hdr.last_track = CDROM_LEADOUT; | |
1641 | } | |
1642 | } | |
1643 | ||
1644 | if (stat) | |
1645 | return stat; | |
1646 | ||
1647 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); | |
1648 | ||
2bc4cf2d | 1649 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1650 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1651 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1652 | } |
1da177e4 | 1653 | |
cdf6000d | 1654 | for (i = 0; i <= ntracks; i++) { |
2bc4cf2d BZ |
1655 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1656 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) | |
9a6dc668 | 1657 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
1da177e4 LT |
1658 | msf_from_bcd(&toc->ent[i].addr.msf); |
1659 | } | |
1da177e4 LT |
1660 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, |
1661 | toc->ent[i].addr.msf.second, | |
1662 | toc->ent[i].addr.msf.frame); | |
1663 | } | |
1664 | ||
1665 | /* Read the multisession information. */ | |
1666 | if (toc->hdr.first_track != CDROM_LEADOUT) { | |
1667 | /* Read the multisession information. */ | |
1668 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, | |
1669 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
1670 | if (stat) |
1671 | return stat; | |
1da177e4 LT |
1672 | |
1673 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
1674 | } else { | |
1675 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; | |
1676 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ | |
1677 | } | |
1678 | ||
2bc4cf2d | 1679 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1da177e4 LT |
1680 | /* Re-read multisession information using MSF format */ |
1681 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, | |
1682 | sizeof(ms_tmp), sense); | |
1683 | if (stat) | |
1684 | return stat; | |
1685 | ||
1686 | msf_from_bcd (&ms_tmp.ent.addr.msf); | |
1687 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, | |
1688 | ms_tmp.ent.addr.msf.second, | |
1689 | ms_tmp.ent.addr.msf.frame); | |
1690 | } | |
1da177e4 LT |
1691 | |
1692 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
1693 | ||
1694 | /* Now try to get the total cdrom capacity. */ | |
1695 | stat = cdrom_get_last_written(cdi, &last_written); | |
1696 | if (!stat && (last_written > toc->capacity)) { | |
1697 | toc->capacity = last_written; | |
1698 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 1699 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
1700 | } |
1701 | ||
1702 | /* Remember that we've read this stuff. */ | |
2bc4cf2d | 1703 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
1da177e4 LT |
1704 | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1da177e4 LT |
1708 | /* the generic packet interface to cdrom.c */ |
1709 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, | |
1710 | struct packet_command *cgc) | |
1711 | { | |
1712 | struct request req; | |
2a91f3e5 | 1713 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
1714 | |
1715 | if (cgc->timeout <= 0) | |
1716 | cgc->timeout = ATAPI_WAIT_PC; | |
1717 | ||
1718 | /* here we queue the commands from the uniform CD-ROM | |
1719 | layer. the packet must be complete, as we do not | |
1720 | touch it at all. */ | |
139c829d | 1721 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1722 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); |
1723 | if (cgc->sense) | |
1724 | memset(cgc->sense, 0, sizeof(struct request_sense)); | |
1725 | req.data = cgc->buffer; | |
1726 | req.data_len = cgc->buflen; | |
1727 | req.timeout = cgc->timeout; | |
1728 | ||
1729 | if (cgc->quiet) | |
4aff5e23 | 1730 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1731 | |
1732 | req.sense = cgc->sense; | |
139c829d | 1733 | cgc->stat = ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1734 | if (!cgc->stat) |
1735 | cgc->buflen -= req.data_len; | |
1736 | return cgc->stat; | |
1737 | } | |
1738 | ||
1da177e4 LT |
1739 | static |
1740 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) | |
1741 | { | |
2a91f3e5 | 1742 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
1743 | struct request_sense sense; |
1744 | ||
1745 | if (position) { | |
139c829d BZ |
1746 | int stat = ide_cd_lockdoor(drive, 0, &sense); |
1747 | ||
2a91f3e5 JJ |
1748 | if (stat) |
1749 | return stat; | |
1da177e4 LT |
1750 | } |
1751 | ||
1752 | return cdrom_eject(drive, !position, &sense); | |
1753 | } | |
1754 | ||
17802998 | 1755 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
9235e68b EP |
1756 | { |
1757 | struct cdrom_info *info = drive->driver_data; | |
1758 | struct cdrom_device_info *cdi = &info->devinfo; | |
1759 | struct packet_command cgc; | |
455d80a9 | 1760 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
9235e68b | 1761 | |
e59724c7 | 1762 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
455d80a9 | 1763 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
9235e68b | 1764 | |
455d80a9 | 1765 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
9235e68b EP |
1766 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
1767 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); | |
1768 | if (!stat) | |
1769 | break; | |
1770 | } while (--attempts); | |
1771 | return stat; | |
1772 | } | |
1773 | ||
17802998 | 1774 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
9235e68b | 1775 | { |
4fe67178 | 1776 | struct cdrom_info *cd = drive->driver_data; |
481c8c64 BZ |
1777 | u16 curspeed, maxspeed; |
1778 | ||
455d80a9 BZ |
1779 | curspeed = *(u16 *)&buf[8 + 14]; |
1780 | maxspeed = *(u16 *)&buf[8 + 8]; | |
1781 | ||
e59724c7 | 1782 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
455d80a9 BZ |
1783 | curspeed = le16_to_cpu(curspeed); |
1784 | maxspeed = le16_to_cpu(maxspeed); | |
9235e68b | 1785 | } else { |
455d80a9 BZ |
1786 | curspeed = be16_to_cpu(curspeed); |
1787 | maxspeed = be16_to_cpu(maxspeed); | |
9235e68b | 1788 | } |
481c8c64 | 1789 | |
2bc4cf2d BZ |
1790 | cd->current_speed = (curspeed + (176/2)) / 176; |
1791 | cd->max_speed = (maxspeed + (176/2)) / 176; | |
9235e68b EP |
1792 | } |
1793 | ||
1da177e4 LT |
1794 | /* |
1795 | * add logic to try GET_EVENT command first to check for media and tray | |
1796 | * status. this should be supported by newer cd-r/w and all DVD etc | |
1797 | * drives | |
1798 | */ | |
1799 | static | |
1800 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) | |
1801 | { | |
2a91f3e5 | 1802 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
1803 | struct media_event_desc med; |
1804 | struct request_sense sense; | |
1805 | int stat; | |
1806 | ||
1807 | if (slot_nr != CDSL_CURRENT) | |
1808 | return -EINVAL; | |
1809 | ||
1810 | stat = cdrom_check_status(drive, &sense); | |
1811 | if (!stat || sense.sense_key == UNIT_ATTENTION) | |
1812 | return CDS_DISC_OK; | |
1813 | ||
1814 | if (!cdrom_get_media_event(cdi, &med)) { | |
1815 | if (med.media_present) | |
1816 | return CDS_DISC_OK; | |
1817 | else if (med.door_open) | |
1818 | return CDS_TRAY_OPEN; | |
1819 | else | |
1820 | return CDS_NO_DISC; | |
1821 | } | |
1822 | ||
1823 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) | |
1824 | return CDS_DISC_OK; | |
1825 | ||
1826 | /* | |
1827 | * If not using Mt Fuji extended media tray reports, | |
1828 | * just return TRAY_OPEN since ATAPI doesn't provide | |
1829 | * any other way to detect this... | |
1830 | */ | |
1831 | if (sense.sense_key == NOT_READY) { | |
dbe217af AC |
1832 | if (sense.asc == 0x3a && sense.ascq == 1) |
1833 | return CDS_NO_DISC; | |
1834 | else | |
1835 | return CDS_TRAY_OPEN; | |
1da177e4 | 1836 | } |
1da177e4 LT |
1837 | return CDS_DRIVE_NOT_READY; |
1838 | } | |
1839 | ||
1da177e4 LT |
1840 | /**************************************************************************** |
1841 | * Other driver requests (open, close, check media change). | |
1842 | */ | |
1843 | ||
1844 | static | |
1845 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, | |
1846 | int slot_nr) | |
1847 | { | |
2a91f3e5 | 1848 | ide_drive_t *drive = cdi->handle; |
0ba11211 | 1849 | struct cdrom_info *cd = drive->driver_data; |
1da177e4 | 1850 | int retval; |
0ba11211 | 1851 | |
1da177e4 LT |
1852 | if (slot_nr == CDSL_CURRENT) { |
1853 | (void) cdrom_check_status(drive, NULL); | |
2bc4cf2d BZ |
1854 | retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0; |
1855 | cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED; | |
1da177e4 LT |
1856 | return retval; |
1857 | } else { | |
1858 | return -EINVAL; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | ||
1863 | static | |
1864 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) | |
1865 | { | |
1866 | return 0; | |
1867 | } | |
1868 | ||
1869 | /* | |
1870 | * Close down the device. Invalidate all cached blocks. | |
1871 | */ | |
1872 | ||
1873 | static | |
1874 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) | |
1875 | { | |
1876 | ide_drive_t *drive = cdi->handle; | |
0ba11211 | 1877 | struct cdrom_info *cd = drive->driver_data; |
1da177e4 LT |
1878 | |
1879 | if (!cdi->use_count) | |
2bc4cf2d | 1880 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; |
1da177e4 LT |
1881 | } |
1882 | ||
20e7f7ef BZ |
1883 | #define IDE_CD_CAPABILITIES \ |
1884 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ | |
1885 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ | |
1886 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ | |
1887 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ | |
1888 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) | |
1da177e4 | 1889 | |
1da177e4 LT |
1890 | static struct cdrom_device_ops ide_cdrom_dops = { |
1891 | .open = ide_cdrom_open_real, | |
1892 | .release = ide_cdrom_release_real, | |
1893 | .drive_status = ide_cdrom_drive_status, | |
1894 | .media_changed = ide_cdrom_check_media_change_real, | |
1895 | .tray_move = ide_cdrom_tray_move, | |
1896 | .lock_door = ide_cdrom_lock_door, | |
1897 | .select_speed = ide_cdrom_select_speed, | |
1898 | .get_last_session = ide_cdrom_get_last_session, | |
1899 | .get_mcn = ide_cdrom_get_mcn, | |
1900 | .reset = ide_cdrom_reset, | |
1901 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
20e7f7ef | 1902 | .capability = IDE_CD_CAPABILITIES, |
1da177e4 LT |
1903 | .generic_packet = ide_cdrom_packet, |
1904 | }; | |
1905 | ||
1906 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) | |
1907 | { | |
1908 | struct cdrom_info *info = drive->driver_data; | |
1909 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1910 | ||
1911 | devinfo->ops = &ide_cdrom_dops; | |
2bc4cf2d | 1912 | devinfo->speed = info->current_speed; |
1da177e4 | 1913 | devinfo->capacity = nslots; |
2a91f3e5 | 1914 | devinfo->handle = drive; |
1da177e4 | 1915 | strcpy(devinfo->name, drive->name); |
1da177e4 | 1916 | |
2bc4cf2d | 1917 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
3cbd814e BZ |
1918 | devinfo->mask |= CDC_SELECT_SPEED; |
1919 | ||
1da177e4 LT |
1920 | devinfo->disk = info->disk; |
1921 | return register_cdrom(devinfo); | |
1922 | } | |
1923 | ||
1da177e4 LT |
1924 | static |
1925 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) | |
1926 | { | |
4fe67178 BZ |
1927 | struct cdrom_info *cd = drive->driver_data; |
1928 | struct cdrom_device_info *cdi = &cd->devinfo; | |
455d80a9 BZ |
1929 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
1930 | mechtype_t mechtype; | |
1da177e4 LT |
1931 | int nslots = 1; |
1932 | ||
3f1b86d8 BZ |
1933 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
1934 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | | |
1935 | CDC_MO_DRIVE | CDC_RAM); | |
1936 | ||
1da177e4 | 1937 | if (drive->media == ide_optical) { |
3f1b86d8 | 1938 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
1da177e4 LT |
1939 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
1940 | return nslots; | |
1941 | } | |
1942 | ||
e59724c7 | 1943 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
2bc4cf2d | 1944 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
3f1b86d8 | 1945 | cdi->mask &= ~CDC_PLAY_AUDIO; |
1da177e4 LT |
1946 | return nslots; |
1947 | } | |
1948 | ||
1949 | /* | |
1950 | * we have to cheat a little here. the packet will eventually | |
1951 | * be queued with ide_cdrom_packet(), which extracts the | |
1952 | * drive from cdi->handle. Since this device hasn't been | |
1953 | * registered with the Uniform layer yet, it can't do this. | |
1954 | * Same goes for cdi->ops. | |
1955 | */ | |
2a91f3e5 | 1956 | cdi->handle = drive; |
1da177e4 LT |
1957 | cdi->ops = &ide_cdrom_dops; |
1958 | ||
455d80a9 | 1959 | if (ide_cdrom_get_capabilities(drive, buf)) |
1da177e4 LT |
1960 | return 0; |
1961 | ||
455d80a9 | 1962 | if ((buf[8 + 6] & 0x01) == 0) |
2bc4cf2d | 1963 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
455d80a9 | 1964 | if (buf[8 + 6] & 0x08) |
2bc4cf2d | 1965 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
455d80a9 | 1966 | if (buf[8 + 3] & 0x01) |
3f1b86d8 | 1967 | cdi->mask &= ~CDC_CD_R; |
455d80a9 | 1968 | if (buf[8 + 3] & 0x02) |
3f1b86d8 | 1969 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
455d80a9 | 1970 | if (buf[8 + 2] & 0x38) |
3f1b86d8 | 1971 | cdi->mask &= ~CDC_DVD; |
455d80a9 | 1972 | if (buf[8 + 3] & 0x20) |
3f1b86d8 | 1973 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
455d80a9 | 1974 | if (buf[8 + 3] & 0x10) |
3f1b86d8 | 1975 | cdi->mask &= ~CDC_DVD_R; |
e59724c7 | 1976 | if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK)) |
3f1b86d8 | 1977 | cdi->mask &= ~CDC_PLAY_AUDIO; |
455d80a9 BZ |
1978 | |
1979 | mechtype = buf[8 + 6] >> 5; | |
1980 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) | |
3f1b86d8 | 1981 | cdi->mask |= CDC_CLOSE_TRAY; |
1da177e4 | 1982 | |
1da177e4 | 1983 | if (cdi->sanyo_slot > 0) { |
3f1b86d8 | 1984 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 | 1985 | nslots = 3; |
cdf6000d BZ |
1986 | } else if (mechtype == mechtype_individual_changer || |
1987 | mechtype == mechtype_cartridge_changer) { | |
2609d06d BZ |
1988 | nslots = cdrom_number_of_slots(cdi); |
1989 | if (nslots > 1) | |
3f1b86d8 | 1990 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 LT |
1991 | } |
1992 | ||
455d80a9 | 1993 | ide_cdrom_update_speed(drive, buf); |
4fe67178 | 1994 | |
1da177e4 | 1995 | printk(KERN_INFO "%s: ATAPI", drive->name); |
4fe67178 BZ |
1996 | |
1997 | /* don't print speed if the drive reported 0 */ | |
2bc4cf2d BZ |
1998 | if (cd->max_speed) |
1999 | printk(KERN_CONT " %dX", cd->max_speed); | |
4fe67178 | 2000 | |
3f1b86d8 | 2001 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
1da177e4 | 2002 | |
3f1b86d8 BZ |
2003 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
2004 | printk(KERN_CONT " DVD%s%s", | |
2005 | (cdi->mask & CDC_DVD_R) ? "" : "-R", | |
2006 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); | |
1da177e4 | 2007 | |
3f1b86d8 BZ |
2008 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
2009 | printk(KERN_CONT " CD%s%s", | |
2010 | (cdi->mask & CDC_CD_R) ? "" : "-R", | |
2011 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); | |
1da177e4 | 2012 | |
3f1b86d8 BZ |
2013 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
2014 | printk(KERN_CONT " changer w/%d slots", nslots); | |
2015 | else | |
2016 | printk(KERN_CONT " drive"); | |
1da177e4 | 2017 | |
455d80a9 | 2018 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12])); |
1da177e4 LT |
2019 | |
2020 | return nslots; | |
2021 | } | |
2022 | ||
7662d046 | 2023 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2024 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
2025 | { | |
1497943e | 2026 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
1da177e4 | 2027 | } |
7662d046 BZ |
2028 | #else |
2029 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } | |
2030 | #endif | |
1da177e4 LT |
2031 | |
2032 | /* | |
2033 | * standard prep_rq_fn that builds 10 byte cmds | |
2034 | */ | |
165125e1 | 2035 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
2036 | { |
2037 | int hard_sect = queue_hardsect_size(q); | |
2038 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
2039 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
2040 | ||
2041 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
2042 | ||
2043 | if (rq_data_dir(rq) == READ) | |
2044 | rq->cmd[0] = GPCMD_READ_10; | |
2045 | else | |
2046 | rq->cmd[0] = GPCMD_WRITE_10; | |
2047 | ||
2048 | /* | |
2049 | * fill in lba | |
2050 | */ | |
2051 | rq->cmd[2] = (block >> 24) & 0xff; | |
2052 | rq->cmd[3] = (block >> 16) & 0xff; | |
2053 | rq->cmd[4] = (block >> 8) & 0xff; | |
2054 | rq->cmd[5] = block & 0xff; | |
2055 | ||
2056 | /* | |
2057 | * and transfer length | |
2058 | */ | |
2059 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
2060 | rq->cmd[8] = blocks & 0xff; | |
2061 | rq->cmd_len = 10; | |
2062 | return BLKPREP_OK; | |
2063 | } | |
2064 | ||
2065 | /* | |
2066 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
2067 | * This transform handles the few exceptions. | |
2068 | */ | |
2069 | static int ide_cdrom_prep_pc(struct request *rq) | |
2070 | { | |
2071 | u8 *c = rq->cmd; | |
2072 | ||
2073 | /* | |
2074 | * Transform 6-byte read/write commands to the 10-byte version | |
2075 | */ | |
2076 | if (c[0] == READ_6 || c[0] == WRITE_6) { | |
2077 | c[8] = c[4]; | |
2078 | c[5] = c[3]; | |
2079 | c[4] = c[2]; | |
2080 | c[3] = c[1] & 0x1f; | |
2081 | c[2] = 0; | |
2082 | c[1] &= 0xe0; | |
2083 | c[0] += (READ_10 - READ_6); | |
2084 | rq->cmd_len = 10; | |
2085 | return BLKPREP_OK; | |
2086 | } | |
2087 | ||
2088 | /* | |
2089 | * it's silly to pretend we understand 6-byte sense commands, just | |
2090 | * reject with ILLEGAL_REQUEST and the caller should take the | |
2091 | * appropriate action | |
2092 | */ | |
2093 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
2094 | rq->errors = ILLEGAL_REQUEST; | |
2095 | return BLKPREP_KILL; | |
2096 | } | |
2097 | ||
2098 | return BLKPREP_OK; | |
2099 | } | |
2100 | ||
165125e1 | 2101 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 2102 | { |
4aff5e23 | 2103 | if (blk_fs_request(rq)) |
1da177e4 | 2104 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 2105 | else if (blk_pc_request(rq)) |
1da177e4 LT |
2106 | return ide_cdrom_prep_pc(rq); |
2107 | ||
2108 | return 0; | |
2109 | } | |
2110 | ||
e59724c7 BZ |
2111 | struct cd_list_entry { |
2112 | const char *id_model; | |
2113 | const char *id_firmware; | |
2114 | unsigned int cd_flags; | |
2115 | }; | |
2116 | ||
2117 | static const struct cd_list_entry ide_cd_quirks_list[] = { | |
2118 | /* Limit transfer size per interrupt. */ | |
2119 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
2120 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
2121 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ | |
2122 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, | |
2123 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ | |
2124 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | | |
2125 | IDE_CD_FLAG_PRE_ATAPI12, }, | |
2126 | /* Vertos 300, some versions of this drive like to talk BCD. */ | |
2127 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, | |
2128 | /* Vertos 600 ESD. */ | |
2129 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, | |
2130 | /* | |
2131 | * Sanyo 3 CD changer uses a non-standard command for CD changing | |
2132 | * (by default standard ATAPI support for CD changers is used). | |
2133 | */ | |
2134 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
2135 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
2136 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
2137 | /* Stingray 8X CD-ROM. */ | |
2138 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, | |
2139 | /* | |
2140 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length | |
2141 | * mode sense page capabilities size, but older drives break. | |
2142 | */ | |
2143 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
2144 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
2145 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ | |
2146 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, | |
2147 | /* | |
2148 | * Some drives used by Apple don't advertise audio play | |
2149 | * but they do support reading TOC & audio datas. | |
2150 | */ | |
2151 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2152 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2153 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2154 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2155 | { NULL, NULL, 0 } | |
2156 | }; | |
2157 | ||
2158 | static unsigned int ide_cd_flags(struct hd_driveid *id) | |
2159 | { | |
2160 | const struct cd_list_entry *cle = ide_cd_quirks_list; | |
2161 | ||
2162 | while (cle->id_model) { | |
2163 | if (strcmp(cle->id_model, id->model) == 0 && | |
2164 | (cle->id_firmware == NULL || | |
2165 | strstr(id->fw_rev, cle->id_firmware))) | |
2166 | return cle->cd_flags; | |
2167 | cle++; | |
2168 | } | |
2169 | ||
2170 | return 0; | |
2171 | } | |
2172 | ||
1da177e4 LT |
2173 | static |
2174 | int ide_cdrom_setup (ide_drive_t *drive) | |
2175 | { | |
4fe67178 BZ |
2176 | struct cdrom_info *cd = drive->driver_data; |
2177 | struct cdrom_device_info *cdi = &cd->devinfo; | |
e59724c7 | 2178 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
2179 | int nslots; |
2180 | ||
2181 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); | |
2182 | blk_queue_dma_alignment(drive->queue, 31); | |
2183 | drive->queue->unplug_delay = (1 * HZ) / 1000; | |
2184 | if (!drive->queue->unplug_delay) | |
2185 | drive->queue->unplug_delay = 1; | |
2186 | ||
2187 | drive->special.all = 0; | |
2188 | ||
e59724c7 BZ |
2189 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
2190 | ide_cd_flags(id); | |
1da177e4 | 2191 | |
e59724c7 | 2192 | if ((id->config & 0x0060) == 0x20) |
2bc4cf2d | 2193 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
e59724c7 BZ |
2194 | |
2195 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && | |
2196 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d BZ |
2197 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
2198 | IDE_CD_FLAG_TOCADDR_AS_BCD); | |
e59724c7 BZ |
2199 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
2200 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d | 2201 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
e59724c7 BZ |
2202 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
2203 | cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */ | |
1da177e4 | 2204 | |
1da177e4 LT |
2205 | nslots = ide_cdrom_probe_capabilities (drive); |
2206 | ||
2207 | /* | |
2208 | * set correct block size | |
2209 | */ | |
2210 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); | |
2211 | ||
2212 | if (drive->autotune == IDE_TUNE_DEFAULT || | |
2213 | drive->autotune == IDE_TUNE_AUTO) | |
2214 | drive->dsc_overlap = (drive->next != drive); | |
1da177e4 LT |
2215 | |
2216 | if (ide_cdrom_register(drive, nslots)) { | |
2217 | printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); | |
4fe67178 | 2218 | cd->devinfo.handle = NULL; |
1da177e4 LT |
2219 | return 1; |
2220 | } | |
2221 | ide_cdrom_add_settings(drive); | |
2222 | return 0; | |
2223 | } | |
2224 | ||
ecfd80e4 | 2225 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2226 | static |
2227 | sector_t ide_cdrom_capacity (ide_drive_t *drive) | |
2228 | { | |
2229 | unsigned long capacity, sectors_per_frame; | |
2230 | ||
2231 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
2232 | return 0; | |
2233 | ||
2234 | return capacity * sectors_per_frame; | |
2235 | } | |
d97b3214 | 2236 | #endif |
1da177e4 | 2237 | |
4031bbe4 | 2238 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
2239 | { |
2240 | struct cdrom_info *info = drive->driver_data; | |
2241 | ||
7662d046 | 2242 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
2243 | |
2244 | del_gendisk(info->disk); | |
2245 | ||
2246 | ide_cd_put(info); | |
1da177e4 LT |
2247 | } |
2248 | ||
2249 | static void ide_cd_release(struct kref *kref) | |
2250 | { | |
2251 | struct cdrom_info *info = to_ide_cd(kref); | |
2252 | struct cdrom_device_info *devinfo = &info->devinfo; | |
2253 | ide_drive_t *drive = info->drive; | |
2254 | struct gendisk *g = info->disk; | |
2255 | ||
6044ec88 JJ |
2256 | kfree(info->buffer); |
2257 | kfree(info->toc); | |
1da177e4 LT |
2258 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
2259 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " | |
2260 | "driver.\n", __FUNCTION__, drive->name); | |
2261 | drive->dsc_overlap = 0; | |
2262 | drive->driver_data = NULL; | |
2263 | blk_queue_prep_rq(drive->queue, NULL); | |
2264 | g->private_data = NULL; | |
2265 | put_disk(g); | |
2266 | kfree(info); | |
2267 | } | |
2268 | ||
4031bbe4 | 2269 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 2270 | |
ecfd80e4 | 2271 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2272 | static int proc_idecd_read_capacity |
2273 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
2274 | { | |
2a91f3e5 | 2275 | ide_drive_t *drive = data; |
1da177e4 LT |
2276 | int len; |
2277 | ||
2278 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); | |
2279 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
2280 | } | |
2281 | ||
2282 | static ide_proc_entry_t idecd_proc[] = { | |
2283 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
2284 | { NULL, 0, NULL, NULL } | |
2285 | }; | |
1da177e4 LT |
2286 | #endif |
2287 | ||
2288 | static ide_driver_t ide_cdrom_driver = { | |
8604affd | 2289 | .gen_driver = { |
4ef3b8f4 | 2290 | .owner = THIS_MODULE, |
8604affd BZ |
2291 | .name = "ide-cdrom", |
2292 | .bus = &ide_bus_type, | |
8604affd | 2293 | }, |
4031bbe4 RK |
2294 | .probe = ide_cd_probe, |
2295 | .remove = ide_cd_remove, | |
1da177e4 LT |
2296 | .version = IDECD_VERSION, |
2297 | .media = ide_cdrom, | |
1da177e4 | 2298 | .supports_dsc_overlap = 1, |
1da177e4 LT |
2299 | .do_request = ide_do_rw_cdrom, |
2300 | .end_request = ide_end_request, | |
2301 | .error = __ide_error, | |
2302 | .abort = __ide_abort, | |
7662d046 | 2303 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 2304 | .proc = idecd_proc, |
7662d046 | 2305 | #endif |
1da177e4 LT |
2306 | }; |
2307 | ||
2308 | static int idecd_open(struct inode * inode, struct file * file) | |
2309 | { | |
2310 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
2311 | struct cdrom_info *info; | |
1da177e4 LT |
2312 | int rc = -ENOMEM; |
2313 | ||
2314 | if (!(info = ide_cd_get(disk))) | |
2315 | return -ENXIO; | |
2316 | ||
1da177e4 | 2317 | if (!info->buffer) |
c94964a4 BZ |
2318 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); |
2319 | ||
2320 | if (info->buffer) | |
2321 | rc = cdrom_open(&info->devinfo, inode, file); | |
1da177e4 LT |
2322 | |
2323 | if (rc < 0) | |
2324 | ide_cd_put(info); | |
2325 | ||
2326 | return rc; | |
2327 | } | |
2328 | ||
2329 | static int idecd_release(struct inode * inode, struct file * file) | |
2330 | { | |
2331 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
2332 | struct cdrom_info *info = ide_cd_g(disk); | |
1da177e4 LT |
2333 | |
2334 | cdrom_release (&info->devinfo, file); | |
1da177e4 LT |
2335 | |
2336 | ide_cd_put(info); | |
2337 | ||
2338 | return 0; | |
2339 | } | |
2340 | ||
6a2900b6 CH |
2341 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
2342 | { | |
2343 | struct packet_command cgc; | |
2344 | char buffer[16]; | |
2345 | int stat; | |
2346 | char spindown; | |
2347 | ||
2348 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
2349 | return -EFAULT; | |
2350 | ||
2351 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2352 | ||
2353 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2354 | if (stat) | |
2355 | return stat; | |
2356 | ||
2357 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
2358 | return cdrom_mode_select(cdi, &cgc); | |
2359 | } | |
2360 | ||
2361 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
2362 | { | |
2363 | struct packet_command cgc; | |
2364 | char buffer[16]; | |
2365 | int stat; | |
2366 | char spindown; | |
2367 | ||
2368 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2369 | ||
2370 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2371 | if (stat) | |
2372 | return stat; | |
2373 | ||
2374 | spindown = buffer[11] & 0x0f; | |
2375 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) | |
2376 | return -EFAULT; | |
2377 | return 0; | |
2378 | } | |
2379 | ||
1da177e4 LT |
2380 | static int idecd_ioctl (struct inode *inode, struct file *file, |
2381 | unsigned int cmd, unsigned long arg) | |
2382 | { | |
2383 | struct block_device *bdev = inode->i_bdev; | |
2384 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); | |
2385 | int err; | |
2386 | ||
6a2900b6 CH |
2387 | switch (cmd) { |
2388 | case CDROMSETSPINDOWN: | |
2389 | return idecd_set_spindown(&info->devinfo, arg); | |
2390 | case CDROMGETSPINDOWN: | |
2391 | return idecd_get_spindown(&info->devinfo, arg); | |
2392 | default: | |
2393 | break; | |
2394 | } | |
2395 | ||
2396 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); | |
1da177e4 LT |
2397 | if (err == -EINVAL) |
2398 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); | |
2399 | ||
2400 | return err; | |
2401 | } | |
2402 | ||
2403 | static int idecd_media_changed(struct gendisk *disk) | |
2404 | { | |
2405 | struct cdrom_info *info = ide_cd_g(disk); | |
2406 | return cdrom_media_changed(&info->devinfo); | |
2407 | } | |
2408 | ||
2409 | static int idecd_revalidate_disk(struct gendisk *disk) | |
2410 | { | |
2411 | struct cdrom_info *info = ide_cd_g(disk); | |
2412 | struct request_sense sense; | |
139c829d BZ |
2413 | |
2414 | ide_cd_read_toc(info->drive, &sense); | |
2415 | ||
1da177e4 LT |
2416 | return 0; |
2417 | } | |
2418 | ||
2419 | static struct block_device_operations idecd_ops = { | |
2420 | .owner = THIS_MODULE, | |
2421 | .open = idecd_open, | |
2422 | .release = idecd_release, | |
2423 | .ioctl = idecd_ioctl, | |
2424 | .media_changed = idecd_media_changed, | |
2425 | .revalidate_disk= idecd_revalidate_disk | |
2426 | }; | |
2427 | ||
2428 | /* options */ | |
2429 | static char *ignore = NULL; | |
2430 | ||
2431 | module_param(ignore, charp, 0400); | |
2432 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); | |
2433 | ||
4031bbe4 | 2434 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
2435 | { |
2436 | struct cdrom_info *info; | |
2437 | struct gendisk *g; | |
2438 | struct request_sense sense; | |
2439 | ||
2440 | if (!strstr("ide-cdrom", drive->driver_req)) | |
2441 | goto failed; | |
2442 | if (!drive->present) | |
2443 | goto failed; | |
2444 | if (drive->media != ide_cdrom && drive->media != ide_optical) | |
2445 | goto failed; | |
2446 | /* skip drives that we were told to ignore */ | |
2447 | if (ignore != NULL) { | |
2448 | if (strstr(ignore, drive->name)) { | |
2449 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); | |
2450 | goto failed; | |
2451 | } | |
2452 | } | |
2453 | if (drive->scsi) { | |
2454 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); | |
2455 | goto failed; | |
2456 | } | |
f5e3c2fa | 2457 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 LT |
2458 | if (info == NULL) { |
2459 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); | |
2460 | goto failed; | |
2461 | } | |
2462 | ||
2463 | g = alloc_disk(1 << PARTN_BITS); | |
2464 | if (!g) | |
2465 | goto out_free_cd; | |
2466 | ||
2467 | ide_init_disk(g, drive); | |
2468 | ||
7662d046 | 2469 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
8604affd | 2470 | |
1da177e4 LT |
2471 | kref_init(&info->kref); |
2472 | ||
2473 | info->drive = drive; | |
2474 | info->driver = &ide_cdrom_driver; | |
2475 | info->disk = g; | |
2476 | ||
2477 | g->private_data = &info->driver; | |
2478 | ||
2479 | drive->driver_data = info; | |
2480 | ||
1da177e4 | 2481 | g->minors = 1; |
1da177e4 LT |
2482 | g->driverfs_dev = &drive->gendev; |
2483 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
2484 | if (ide_cdrom_setup(drive)) { | |
7662d046 | 2485 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
05017db3 | 2486 | ide_cd_release(&info->kref); |
1da177e4 LT |
2487 | goto failed; |
2488 | } | |
1da177e4 | 2489 | |
139c829d | 2490 | ide_cd_read_toc(drive, &sense); |
1da177e4 LT |
2491 | g->fops = &idecd_ops; |
2492 | g->flags |= GENHD_FL_REMOVABLE; | |
2493 | add_disk(g); | |
2494 | return 0; | |
2495 | ||
1da177e4 LT |
2496 | out_free_cd: |
2497 | kfree(info); | |
2498 | failed: | |
8604affd | 2499 | return -ENODEV; |
1da177e4 LT |
2500 | } |
2501 | ||
2502 | static void __exit ide_cdrom_exit(void) | |
2503 | { | |
8604affd | 2504 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 2505 | } |
17514e8a BZ |
2506 | |
2507 | static int __init ide_cdrom_init(void) | |
1da177e4 | 2508 | { |
8604affd | 2509 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
2510 | } |
2511 | ||
263756ec | 2512 | MODULE_ALIAS("ide:*m-cdrom*"); |
972560fb | 2513 | MODULE_ALIAS("ide-cd"); |
1da177e4 LT |
2514 | module_init(ide_cdrom_init); |
2515 | module_exit(ide_cdrom_exit); | |
2516 | MODULE_LICENSE("GPL"); |