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Commit | Line | Data |
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1da177e4 | 1 | /* |
3bb4663b | 2 | * ATAPI CD-ROM driver. |
1da177e4 | 3 | * |
59bca8cc BZ |
4 | * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov> |
5 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> | |
6 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> | |
7 | * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz | |
1da177e4 LT |
8 | * |
9 | * May be copied or modified under the terms of the GNU General Public | |
10 | * License. See linux/COPYING for more information. | |
11 | * | |
1da177e4 LT |
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 | |
9ce70fb2 PC |
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 | |
1da177e4 LT |
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 | * | |
03553353 BZ |
22 | * For historical changelog please see: |
23 | * Documentation/ide/ChangeLog.ide-cd.1994-2004 | |
24 | */ | |
25 | ||
3bb4663b | 26 | #define IDECD_VERSION "5.00" |
1da177e4 | 27 | |
1da177e4 LT |
28 | #include <linux/module.h> |
29 | #include <linux/types.h> | |
30 | #include <linux/kernel.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/timer.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/errno.h> | |
36 | #include <linux/cdrom.h> | |
37 | #include <linux/ide.h> | |
38 | #include <linux/completion.h> | |
cf8b8975 | 39 | #include <linux/mutex.h> |
9a6dc668 | 40 | #include <linux/bcd.h> |
1da177e4 | 41 | |
5a3ea3b4 BP |
42 | /* For SCSI -> ATAPI command conversion */ |
43 | #include <scsi/scsi.h> | |
1da177e4 | 44 | |
9aba468e BP |
45 | #include <linux/irq.h> |
46 | #include <linux/io.h> | |
1da177e4 | 47 | #include <asm/byteorder.h> |
9aba468e | 48 | #include <linux/uaccess.h> |
1da177e4 LT |
49 | #include <asm/unaligned.h> |
50 | ||
51 | #include "ide-cd.h" | |
52 | ||
cf8b8975 | 53 | static DEFINE_MUTEX(idecd_ref_mutex); |
1da177e4 | 54 | |
9ce70fb2 | 55 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) |
1da177e4 LT |
56 | |
57 | #define ide_cd_g(disk) \ | |
58 | container_of((disk)->private_data, struct cdrom_info, driver) | |
59 | ||
60 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) | |
61 | { | |
62 | struct cdrom_info *cd = NULL; | |
63 | ||
cf8b8975 | 64 | mutex_lock(&idecd_ref_mutex); |
1da177e4 LT |
65 | cd = ide_cd_g(disk); |
66 | if (cd) | |
67 | kref_get(&cd->kref); | |
cf8b8975 | 68 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
69 | return cd; |
70 | } | |
71 | ||
72 | static void ide_cd_release(struct kref *); | |
73 | ||
74 | static void ide_cd_put(struct cdrom_info *cd) | |
75 | { | |
cf8b8975 | 76 | mutex_lock(&idecd_ref_mutex); |
1da177e4 | 77 | kref_put(&cd->kref, ide_cd_release); |
cf8b8975 | 78 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
79 | } |
80 | ||
5a3ea3b4 | 81 | /* |
1da177e4 LT |
82 | * Generic packet command support and error handling routines. |
83 | */ | |
84 | ||
5a3ea3b4 | 85 | /* Mark that we've seen a media change and invalidate our internal buffers. */ |
9ce70fb2 | 86 | static void cdrom_saw_media_change(ide_drive_t *drive) |
1da177e4 | 87 | { |
0ba11211 BZ |
88 | struct cdrom_info *cd = drive->driver_data; |
89 | ||
2bc4cf2d BZ |
90 | cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED; |
91 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; | |
1da177e4 LT |
92 | } |
93 | ||
94 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, | |
95 | struct request_sense *sense) | |
96 | { | |
97 | int log = 0; | |
98 | ||
4aff5e23 | 99 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
100 | return 0; |
101 | ||
102 | switch (sense->sense_key) { | |
9ce70fb2 PC |
103 | case NO_SENSE: |
104 | case RECOVERED_ERROR: | |
105 | break; | |
106 | case NOT_READY: | |
107 | /* | |
5a3ea3b4 BP |
108 | * don't care about tray state messages for e.g. capacity |
109 | * commands or in-progress or becoming ready | |
9ce70fb2 PC |
110 | */ |
111 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
1da177e4 | 112 | break; |
9ce70fb2 PC |
113 | log = 1; |
114 | break; | |
115 | case ILLEGAL_REQUEST: | |
116 | /* | |
5a3ea3b4 BP |
117 | * don't log START_STOP unit with LoEj set, since we cannot |
118 | * reliably check if drive can auto-close | |
9ce70fb2 PC |
119 | */ |
120 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
1da177e4 | 121 | break; |
9ce70fb2 PC |
122 | log = 1; |
123 | break; | |
124 | case UNIT_ATTENTION: | |
125 | /* | |
5a3ea3b4 BP |
126 | * Make good and sure we've seen this potential media change. |
127 | * Some drives (i.e. Creative) fail to present the correct sense | |
128 | * key in the error register. | |
9ce70fb2 PC |
129 | */ |
130 | cdrom_saw_media_change(drive); | |
131 | break; | |
132 | default: | |
133 | log = 1; | |
134 | break; | |
1da177e4 LT |
135 | } |
136 | return log; | |
137 | } | |
138 | ||
e5e076a3 | 139 | static void cdrom_analyze_sense_data(ide_drive_t *drive, |
1da177e4 LT |
140 | struct request *failed_command, |
141 | struct request_sense *sense) | |
142 | { | |
dbe217af AC |
143 | unsigned long sector; |
144 | unsigned long bio_sectors; | |
dbe217af AC |
145 | struct cdrom_info *info = drive->driver_data; |
146 | ||
1da177e4 LT |
147 | if (!cdrom_log_sense(drive, failed_command, sense)) |
148 | return; | |
149 | ||
150 | /* | |
5a3ea3b4 BP |
151 | * If a read toc is executed for a CD-R or CD-RW medium where the first |
152 | * toc has not been recorded yet, it will fail with 05/24/00 (which is a | |
153 | * confusing error) | |
1da177e4 LT |
154 | */ |
155 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
156 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
157 | return; | |
158 | ||
5a3ea3b4 BP |
159 | /* current error */ |
160 | if (sense->error_code == 0x70) { | |
9ce70fb2 | 161 | switch (sense->sense_key) { |
dbe217af AC |
162 | case MEDIUM_ERROR: |
163 | case VOLUME_OVERFLOW: | |
164 | case ILLEGAL_REQUEST: | |
165 | if (!sense->valid) | |
166 | break; | |
167 | if (failed_command == NULL || | |
168 | !blk_fs_request(failed_command)) | |
169 | break; | |
170 | sector = (sense->information[0] << 24) | | |
171 | (sense->information[1] << 16) | | |
172 | (sense->information[2] << 8) | | |
173 | (sense->information[3]); | |
174 | ||
dbe217af | 175 | if (drive->queue->hardsect_size == 2048) |
5a3ea3b4 BP |
176 | /* device sector size is 2K */ |
177 | sector <<= 2; | |
eee49298 RK |
178 | |
179 | bio_sectors = max(bio_sectors(failed_command->bio), 4U); | |
9ce70fb2 | 180 | sector &= ~(bio_sectors - 1); |
dbe217af | 181 | |
dbe217af | 182 | if (sector < get_capacity(info->disk) && |
e5e076a3 | 183 | drive->probed_capacity - sector < 4 * 75) |
dbe217af | 184 | set_capacity(info->disk, sector); |
9ce70fb2 PC |
185 | } |
186 | } | |
1da177e4 | 187 | |
972560fb | 188 | ide_cd_log_error(drive->name, failed_command, sense); |
1da177e4 LT |
189 | } |
190 | ||
1da177e4 LT |
191 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, |
192 | struct request *failed_command) | |
193 | { | |
194 | struct cdrom_info *info = drive->driver_data; | |
195 | struct request *rq = &info->request_sense_request; | |
196 | ||
197 | if (sense == NULL) | |
198 | sense = &info->sense_data; | |
199 | ||
200 | /* stuff the sense request in front of our current request */ | |
ed820f19 FT |
201 | blk_rq_init(NULL, rq); |
202 | rq->cmd_type = REQ_TYPE_ATA_PC; | |
203 | rq->rq_disk = info->disk; | |
1da177e4 LT |
204 | |
205 | rq->data = sense; | |
206 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
e5e076a3 BP |
207 | rq->cmd[4] = 18; |
208 | rq->data_len = 18; | |
1da177e4 | 209 | |
4aff5e23 | 210 | rq->cmd_type = REQ_TYPE_SENSE; |
e8a96aa7 | 211 | rq->cmd_flags |= REQ_PREEMPT; |
1da177e4 LT |
212 | |
213 | /* NOTE! Save the failed command in "rq->buffer" */ | |
214 | rq->buffer = (void *) failed_command; | |
215 | ||
63f5abb0 | 216 | ide_do_drive_cmd(drive, rq); |
1da177e4 LT |
217 | } |
218 | ||
9ce70fb2 | 219 | static void cdrom_end_request(ide_drive_t *drive, int uptodate) |
1da177e4 LT |
220 | { |
221 | struct request *rq = HWGROUP(drive)->rq; | |
222 | int nsectors = rq->hard_cur_sectors; | |
223 | ||
4aff5e23 | 224 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 225 | /* |
4aff5e23 JA |
226 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
227 | * failed request | |
1da177e4 LT |
228 | */ |
229 | struct request *failed = (struct request *) rq->buffer; | |
230 | struct cdrom_info *info = drive->driver_data; | |
231 | void *sense = &info->sense_data; | |
232 | unsigned long flags; | |
233 | ||
234 | if (failed) { | |
235 | if (failed->sense) { | |
236 | sense = failed->sense; | |
237 | failed->sense_len = rq->sense_len; | |
238 | } | |
dbe217af | 239 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 | 240 | /* |
5a3ea3b4 | 241 | * now end the failed request |
1da177e4 | 242 | */ |
dbe217af AC |
243 | if (blk_fs_request(failed)) { |
244 | if (ide_end_dequeued_request(drive, failed, 0, | |
245 | failed->hard_nr_sectors)) | |
246 | BUG(); | |
247 | } else { | |
248 | spin_lock_irqsave(&ide_lock, flags); | |
5e36bb6e KU |
249 | if (__blk_end_request(failed, -EIO, |
250 | failed->data_len)) | |
251 | BUG(); | |
dbe217af AC |
252 | spin_unlock_irqrestore(&ide_lock, flags); |
253 | } | |
254 | } else | |
255 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
256 | } |
257 | ||
258 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
259 | uptodate = 1; | |
260 | /* make sure it's fully ended */ | |
261 | if (blk_pc_request(rq)) | |
262 | nsectors = (rq->data_len + 511) >> 9; | |
263 | if (!nsectors) | |
264 | nsectors = 1; | |
265 | ||
266 | ide_end_request(drive, uptodate, nsectors); | |
267 | } | |
268 | ||
83c8565d | 269 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st) |
dbe217af | 270 | { |
83c8565d | 271 | if (st & 0x80) |
dbe217af | 272 | return; |
83c8565d | 273 | ide_dump_status(drive, msg, st); |
dbe217af AC |
274 | } |
275 | ||
5a3ea3b4 BP |
276 | /* |
277 | * Returns: | |
278 | * 0: if the request should be continued. | |
279 | * 1: if the request was ended. | |
280 | */ | |
1da177e4 LT |
281 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) |
282 | { | |
b73c7ee2 BZ |
283 | ide_hwif_t *hwif = drive->hwif; |
284 | struct request *rq = hwif->hwgroup->rq; | |
1da177e4 | 285 | int stat, err, sense_key; |
9ce70fb2 | 286 | |
5a3ea3b4 | 287 | /* check for errors */ |
b73c7ee2 | 288 | stat = hwif->read_status(hwif); |
c47137a9 | 289 | |
1da177e4 LT |
290 | if (stat_ret) |
291 | *stat_ret = stat; | |
292 | ||
293 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
294 | return 0; | |
295 | ||
5a3ea3b4 | 296 | /* get the IDE error register */ |
64a57fe4 | 297 | err = ide_read_error(drive); |
1da177e4 LT |
298 | sense_key = err >> 4; |
299 | ||
300 | if (rq == NULL) { | |
e5e076a3 BP |
301 | printk(KERN_ERR "%s: missing rq in %s\n", |
302 | drive->name, __func__); | |
1da177e4 LT |
303 | return 1; |
304 | } | |
305 | ||
4aff5e23 | 306 | if (blk_sense_request(rq)) { |
5a3ea3b4 BP |
307 | /* |
308 | * We got an error trying to get sense info from the drive | |
309 | * (probably while trying to recover from a former error). | |
310 | * Just give up. | |
311 | */ | |
4aff5e23 | 312 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
313 | cdrom_end_request(drive, 0); |
314 | ide_error(drive, "request sense failure", stat); | |
315 | return 1; | |
316 | ||
8770c018 | 317 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 318 | /* All other functions, except for READ. */ |
1da177e4 LT |
319 | |
320 | /* | |
321 | * if we have an error, pass back CHECK_CONDITION as the | |
322 | * scsi status byte | |
323 | */ | |
b7156731 | 324 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
325 | rq->errors = SAM_STAT_CHECK_CONDITION; |
326 | ||
5a3ea3b4 | 327 | /* check for tray open */ |
1da177e4 | 328 | if (sense_key == NOT_READY) { |
9ce70fb2 | 329 | cdrom_saw_media_change(drive); |
1da177e4 | 330 | } else if (sense_key == UNIT_ATTENTION) { |
5a3ea3b4 | 331 | /* check for media change */ |
9ce70fb2 | 332 | cdrom_saw_media_change(drive); |
1da177e4 | 333 | return 0; |
9ce70fb2 PC |
334 | } else if (sense_key == ILLEGAL_REQUEST && |
335 | rq->cmd[0] == GPCMD_START_STOP_UNIT) { | |
336 | /* | |
337 | * Don't print error message for this condition-- | |
338 | * SFF8090i indicates that 5/24/00 is the correct | |
339 | * response to a request to close the tray if the | |
340 | * drive doesn't have that capability. | |
341 | * cdrom_log_sense() knows this! | |
342 | */ | |
4aff5e23 | 343 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
5a3ea3b4 | 344 | /* otherwise, print an error */ |
1da177e4 LT |
345 | ide_dump_status(drive, "packet command error", stat); |
346 | } | |
9ce70fb2 | 347 | |
4aff5e23 | 348 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
349 | |
350 | /* | |
351 | * instead of playing games with moving completions around, | |
352 | * remove failed request completely and end it when the | |
353 | * request sense has completed | |
354 | */ | |
bbb89e3d | 355 | goto end_request; |
1da177e4 LT |
356 | |
357 | } else if (blk_fs_request(rq)) { | |
358 | int do_end_request = 0; | |
359 | ||
5a3ea3b4 | 360 | /* handle errors from READ and WRITE requests */ |
1da177e4 LT |
361 | |
362 | if (blk_noretry_request(rq)) | |
363 | do_end_request = 1; | |
364 | ||
365 | if (sense_key == NOT_READY) { | |
5a3ea3b4 | 366 | /* tray open */ |
1da177e4 | 367 | if (rq_data_dir(rq) == READ) { |
9ce70fb2 | 368 | cdrom_saw_media_change(drive); |
1da177e4 | 369 | |
5a3ea3b4 | 370 | /* fail the request */ |
e5e076a3 | 371 | printk(KERN_ERR "%s: tray open\n", drive->name); |
1da177e4 LT |
372 | do_end_request = 1; |
373 | } else { | |
374 | struct cdrom_info *info = drive->driver_data; | |
375 | ||
5a3ea3b4 BP |
376 | /* |
377 | * Allow the drive 5 seconds to recover, some | |
1da177e4 | 378 | * devices will return this error while flushing |
5a3ea3b4 BP |
379 | * data from cache. |
380 | */ | |
1da177e4 | 381 | if (!rq->errors) |
83c8565d BP |
382 | info->write_timeout = jiffies + |
383 | ATAPI_WAIT_WRITE_BUSY; | |
1da177e4 LT |
384 | rq->errors = 1; |
385 | if (time_after(jiffies, info->write_timeout)) | |
386 | do_end_request = 1; | |
387 | else { | |
388 | unsigned long flags; | |
389 | ||
390 | /* | |
5a3ea3b4 BP |
391 | * take a breather relying on the unplug |
392 | * timer to kick us again | |
1da177e4 LT |
393 | */ |
394 | spin_lock_irqsave(&ide_lock, flags); | |
395 | blk_plug_device(drive->queue); | |
83c8565d BP |
396 | spin_unlock_irqrestore(&ide_lock, |
397 | flags); | |
1da177e4 LT |
398 | return 1; |
399 | } | |
400 | } | |
401 | } else if (sense_key == UNIT_ATTENTION) { | |
5a3ea3b4 | 402 | /* media change */ |
e5e076a3 | 403 | cdrom_saw_media_change(drive); |
1da177e4 | 404 | |
9ce70fb2 | 405 | /* |
5a3ea3b4 BP |
406 | * Arrange to retry the request but be sure to give up |
407 | * if we've retried too many times. | |
9ce70fb2 | 408 | */ |
1da177e4 LT |
409 | if (++rq->errors > ERROR_MAX) |
410 | do_end_request = 1; | |
411 | } else if (sense_key == ILLEGAL_REQUEST || | |
412 | sense_key == DATA_PROTECT) { | |
9ce70fb2 | 413 | /* |
5a3ea3b4 BP |
414 | * No point in retrying after an illegal request or data |
415 | * protect error. | |
9ce70fb2 PC |
416 | */ |
417 | ide_dump_status_no_sense(drive, "command error", stat); | |
1da177e4 LT |
418 | do_end_request = 1; |
419 | } else if (sense_key == MEDIUM_ERROR) { | |
9ce70fb2 PC |
420 | /* |
421 | * No point in re-trying a zillion times on a bad | |
5a3ea3b4 | 422 | * sector. If we got here the error is not correctable. |
9ce70fb2 | 423 | */ |
83c8565d BP |
424 | ide_dump_status_no_sense(drive, |
425 | "media error (bad sector)", | |
426 | stat); | |
1da177e4 LT |
427 | do_end_request = 1; |
428 | } else if (sense_key == BLANK_CHECK) { | |
5a3ea3b4 | 429 | /* disk appears blank ?? */ |
83c8565d BP |
430 | ide_dump_status_no_sense(drive, "media error (blank)", |
431 | stat); | |
1da177e4 LT |
432 | do_end_request = 1; |
433 | } else if ((err & ~ABRT_ERR) != 0) { | |
5a3ea3b4 | 434 | /* go to the default handler for other errors */ |
1da177e4 LT |
435 | ide_error(drive, "cdrom_decode_status", stat); |
436 | return 1; | |
437 | } else if ((++rq->errors > ERROR_MAX)) { | |
5a3ea3b4 | 438 | /* we've racked up too many retries, abort */ |
1da177e4 LT |
439 | do_end_request = 1; |
440 | } | |
441 | ||
5a3ea3b4 BP |
442 | /* |
443 | * End a request through request sense analysis when we have | |
444 | * sense data. We need this in order to perform end of media | |
445 | * processing. | |
446 | */ | |
bbb89e3d BZ |
447 | if (do_end_request) |
448 | goto end_request; | |
dbe217af | 449 | |
bbb89e3d | 450 | /* |
5a3ea3b4 BP |
451 | * If we got a CHECK_CONDITION status, queue |
452 | * a request sense command. | |
bbb89e3d BZ |
453 | */ |
454 | if (stat & ERR_STAT) | |
455 | cdrom_queue_request_sense(drive, NULL, NULL); | |
1da177e4 LT |
456 | } else { |
457 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); | |
458 | cdrom_end_request(drive, 0); | |
459 | } | |
460 | ||
5a3ea3b4 | 461 | /* retry, or handle the next request */ |
1da177e4 | 462 | return 1; |
bbb89e3d BZ |
463 | |
464 | end_request: | |
465 | if (stat & ERR_STAT) { | |
466 | unsigned long flags; | |
467 | ||
468 | spin_lock_irqsave(&ide_lock, flags); | |
469 | blkdev_dequeue_request(rq); | |
470 | HWGROUP(drive)->rq = NULL; | |
471 | spin_unlock_irqrestore(&ide_lock, flags); | |
472 | ||
473 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
474 | } else | |
475 | cdrom_end_request(drive, 0); | |
476 | ||
477 | return 1; | |
1da177e4 LT |
478 | } |
479 | ||
480 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
481 | { | |
482 | struct request *rq = HWGROUP(drive)->rq; | |
483 | unsigned long wait = 0; | |
484 | ||
485 | /* | |
5a3ea3b4 BP |
486 | * Some commands are *slow* and normally take a long time to complete. |
487 | * Usually we can use the ATAPI "disconnect" to bypass this, but not all | |
488 | * commands/drives support that. Let ide_timer_expiry keep polling us | |
489 | * for these. | |
1da177e4 LT |
490 | */ |
491 | switch (rq->cmd[0]) { | |
9ce70fb2 PC |
492 | case GPCMD_BLANK: |
493 | case GPCMD_FORMAT_UNIT: | |
494 | case GPCMD_RESERVE_RZONE_TRACK: | |
495 | case GPCMD_CLOSE_TRACK: | |
496 | case GPCMD_FLUSH_CACHE: | |
497 | wait = ATAPI_WAIT_PC; | |
498 | break; | |
499 | default: | |
500 | if (!(rq->cmd_flags & REQ_QUIET)) | |
83c8565d BP |
501 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", |
502 | rq->cmd[0]); | |
9ce70fb2 PC |
503 | wait = 0; |
504 | break; | |
1da177e4 LT |
505 | } |
506 | return wait; | |
507 | } | |
508 | ||
5a3ea3b4 BP |
509 | /* |
510 | * Set up the device registers for transferring a packet command on DEV, | |
511 | * expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
512 | * which actually transfers the command to the drive. If this is a | |
513 | * drq_interrupt device, this routine will arrange for HANDLER to be | |
514 | * called when the interrupt from the drive arrives. Otherwise, HANDLER | |
515 | * will be called immediately after the drive is prepared for the transfer. | |
516 | */ | |
1da177e4 LT |
517 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, |
518 | int xferlen, | |
519 | ide_handler_t *handler) | |
520 | { | |
1da177e4 LT |
521 | struct cdrom_info *info = drive->driver_data; |
522 | ide_hwif_t *hwif = drive->hwif; | |
523 | ||
3a6a3549 | 524 | /* FIXME: for Virtual DMA we must check harder */ |
1da177e4 | 525 | if (info->dma) |
5e37bdc0 | 526 | info->dma = !hwif->dma_ops->dma_setup(drive); |
1da177e4 | 527 | |
5a3ea3b4 | 528 | /* set up the controller registers */ |
9a410e79 BZ |
529 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL, |
530 | xferlen, info->dma); | |
4fe67178 | 531 | |
2bc4cf2d | 532 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
f0dd8712 AL |
533 | /* waiting for CDB interrupt, not DMA yet. */ |
534 | if (info->dma) | |
535 | drive->waiting_for_dma = 0; | |
536 | ||
1da177e4 | 537 | /* packet command */ |
83c8565d BP |
538 | ide_execute_command(drive, WIN_PACKETCMD, handler, |
539 | ATAPI_WAIT_PC, cdrom_timer_expiry); | |
1da177e4 LT |
540 | return ide_started; |
541 | } else { | |
1fc14258 | 542 | ide_execute_pkt_cmd(drive); |
1da177e4 LT |
543 | |
544 | return (*handler) (drive); | |
545 | } | |
546 | } | |
547 | ||
5a3ea3b4 BP |
548 | /* |
549 | * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device | |
550 | * registers must have already been prepared by cdrom_start_packet_command. | |
551 | * HANDLER is the interrupt handler to call when the command completes or | |
552 | * there's data ready. | |
553 | */ | |
1da177e4 | 554 | #define ATAPI_MIN_CDB_BYTES 12 |
9ce70fb2 | 555 | static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive, |
1da177e4 LT |
556 | struct request *rq, |
557 | ide_handler_t *handler) | |
558 | { | |
559 | ide_hwif_t *hwif = drive->hwif; | |
560 | int cmd_len; | |
561 | struct cdrom_info *info = drive->driver_data; | |
562 | ide_startstop_t startstop; | |
563 | ||
2bc4cf2d | 564 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
5a3ea3b4 BP |
565 | /* |
566 | * Here we should have been called after receiving an interrupt | |
567 | * from the device. DRQ should how be set. | |
568 | */ | |
1da177e4 | 569 | |
5a3ea3b4 | 570 | /* check for errors */ |
1da177e4 LT |
571 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) |
572 | return ide_stopped; | |
f0dd8712 | 573 | |
5a3ea3b4 | 574 | /* ok, next interrupt will be DMA interrupt */ |
f0dd8712 AL |
575 | if (info->dma) |
576 | drive->waiting_for_dma = 1; | |
1da177e4 | 577 | } else { |
5a3ea3b4 | 578 | /* otherwise, we must wait for DRQ to get set */ |
1da177e4 LT |
579 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
580 | BUSY_STAT, WAIT_READY)) | |
581 | return startstop; | |
582 | } | |
583 | ||
5a3ea3b4 | 584 | /* arm the interrupt handler */ |
1da177e4 LT |
585 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); |
586 | ||
587 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
588 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
589 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
590 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
591 | ||
5a3ea3b4 | 592 | /* send the command to the device */ |
9567b349 | 593 | hwif->output_data(drive, NULL, rq->cmd, cmd_len); |
1da177e4 | 594 | |
5a3ea3b4 | 595 | /* start the DMA if need be */ |
1da177e4 | 596 | if (info->dma) |
5e37bdc0 | 597 | hwif->dma_ops->dma_start(drive); |
1da177e4 LT |
598 | |
599 | return ide_started; | |
600 | } | |
601 | ||
1da177e4 LT |
602 | /* |
603 | * Check the contents of the interrupt reason register from the cdrom | |
604 | * and attempt to recover if there are problems. Returns 0 if everything's | |
605 | * ok; nonzero if the request has been terminated. | |
606 | */ | |
9f10d9ee BZ |
607 | static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, |
608 | int len, int ireason, int rw) | |
1da177e4 | 609 | { |
b73c7ee2 BZ |
610 | ide_hwif_t *hwif = drive->hwif; |
611 | ||
0d6f7e3a BZ |
612 | /* |
613 | * ireason == 0: the drive wants to receive data from us | |
614 | * ireason == 2: the drive is expecting to transfer data to us | |
615 | */ | |
616 | if (ireason == (!rw << 1)) | |
1da177e4 | 617 | return 0; |
0d6f7e3a | 618 | else if (ireason == (rw << 1)) { |
5a5222d9 | 619 | |
5a3ea3b4 | 620 | /* whoops... */ |
35379c07 | 621 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
177773ed | 622 | drive->name, __func__); |
1da177e4 | 623 | |
ae8789f0 | 624 | ide_pad_transfer(drive, rw, len); |
0d6f7e3a | 625 | } else if (rw == 0 && ireason == 1) { |
5a3ea3b4 BP |
626 | /* |
627 | * Some drives (ASUS) seem to tell us that status info is | |
628 | * available. Just get it and ignore. | |
1da177e4 | 629 | */ |
b73c7ee2 | 630 | (void)hwif->read_status(hwif); |
1da177e4 LT |
631 | return 0; |
632 | } else { | |
5a3ea3b4 | 633 | /* drive wants a command packet, or invalid ireason... */ |
35379c07 | 634 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
177773ed | 635 | drive->name, __func__, ireason); |
1da177e4 LT |
636 | } |
637 | ||
9f10d9ee BZ |
638 | if (rq->cmd_type == REQ_TYPE_ATA_PC) |
639 | rq->cmd_flags |= REQ_FAILED; | |
640 | ||
1da177e4 LT |
641 | cdrom_end_request(drive, 0); |
642 | return -1; | |
643 | } | |
644 | ||
64814f23 BZ |
645 | /* |
646 | * Assume that the drive will always provide data in multiples of at least | |
647 | * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. | |
648 | */ | |
649 | static int ide_cd_check_transfer_size(ide_drive_t *drive, int len) | |
650 | { | |
651 | struct cdrom_info *cd = drive->driver_data; | |
652 | ||
653 | if ((len % SECTOR_SIZE) == 0) | |
654 | return 0; | |
655 | ||
656 | printk(KERN_ERR "%s: %s: Bad transfer size %d\n", | |
177773ed | 657 | drive->name, __func__, len); |
64814f23 BZ |
658 | |
659 | if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) | |
660 | printk(KERN_ERR " This drive is not supported by " | |
661 | "this version of the driver\n"); | |
662 | else { | |
663 | printk(KERN_ERR " Trying to limit transfer sizes\n"); | |
664 | cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; | |
665 | } | |
666 | ||
667 | return 1; | |
668 | } | |
669 | ||
0041e7c6 | 670 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); |
94f5a86d | 671 | |
90eb808e BP |
672 | static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive, |
673 | struct request *rq) | |
1da177e4 | 674 | { |
29f3aaca BZ |
675 | if (rq_data_dir(rq) == READ) { |
676 | unsigned short sectors_per_frame = | |
677 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
678 | int nskip = rq->sector & (sectors_per_frame - 1); | |
1da177e4 | 679 | |
29f3aaca BZ |
680 | /* |
681 | * If the requested sector doesn't start on a frame boundary, | |
682 | * we must adjust the start of the transfer so that it does, | |
683 | * and remember to skip the first few sectors. | |
684 | * | |
685 | * If the rq->current_nr_sectors field is larger than the size | |
686 | * of the buffer, it will mean that we're to skip a number of | |
687 | * sectors equal to the amount by which rq->current_nr_sectors | |
688 | * is larger than the buffer size. | |
689 | */ | |
690 | if (nskip > 0) { | |
5a3ea3b4 | 691 | /* sanity check... */ |
29f3aaca BZ |
692 | if (rq->current_nr_sectors != |
693 | bio_cur_sectors(rq->bio)) { | |
694 | printk(KERN_ERR "%s: %s: buffer botch (%u)\n", | |
177773ed | 695 | drive->name, __func__, |
29f3aaca BZ |
696 | rq->current_nr_sectors); |
697 | cdrom_end_request(drive, 0); | |
698 | return ide_stopped; | |
699 | } | |
700 | rq->current_nr_sectors += nskip; | |
1da177e4 | 701 | } |
1da177e4 | 702 | } |
29f3aaca BZ |
703 | #if 0 |
704 | else | |
705 | /* the immediate bit */ | |
706 | rq->cmd[1] = 1 << 3; | |
707 | #endif | |
5a3ea3b4 | 708 | /* set up the command */ |
1da177e4 LT |
709 | rq->timeout = ATAPI_WAIT_PC; |
710 | ||
90eb808e BP |
711 | return ide_started; |
712 | } | |
713 | ||
714 | /* | |
715 | * Routine to send a read/write packet command to the drive. This is usually | |
716 | * called directly from cdrom_start_{read,write}(). However, for drq_interrupt | |
717 | * devices, it is called from an interrupt when the drive is ready to accept | |
718 | * the command. | |
719 | */ | |
720 | static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive) | |
721 | { | |
722 | struct request *rq = drive->hwif->hwgroup->rq; | |
723 | ||
5a3ea3b4 | 724 | /* send the command to the drive and return */ |
0041e7c6 | 725 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
1da177e4 LT |
726 | } |
727 | ||
1da177e4 LT |
728 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
729 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ | |
730 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ | |
731 | ||
9ce70fb2 | 732 | static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive) |
1da177e4 LT |
733 | { |
734 | struct cdrom_info *info = drive->driver_data; | |
735 | int stat; | |
736 | static int retry = 10; | |
737 | ||
738 | if (cdrom_decode_status(drive, 0, &stat)) | |
739 | return ide_stopped; | |
4fe67178 | 740 | |
2bc4cf2d | 741 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
742 | |
743 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { | |
5a3ea3b4 | 744 | if (--retry == 0) |
1da177e4 | 745 | drive->dsc_overlap = 0; |
1da177e4 LT |
746 | } |
747 | return ide_stopped; | |
748 | } | |
749 | ||
e529c608 | 750 | static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq) |
1da177e4 | 751 | { |
1da177e4 LT |
752 | sector_t frame = rq->sector; |
753 | ||
754 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); | |
755 | ||
d34c87e4 | 756 | memset(rq->cmd, 0, BLK_MAX_CDB); |
1da177e4 LT |
757 | rq->cmd[0] = GPCMD_SEEK; |
758 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); | |
759 | ||
760 | rq->timeout = ATAPI_WAIT_PC; | |
e529c608 BP |
761 | } |
762 | ||
763 | static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive) | |
764 | { | |
765 | struct request *rq = drive->hwif->hwgroup->rq; | |
766 | ||
1da177e4 LT |
767 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); |
768 | } | |
769 | ||
9ce70fb2 | 770 | /* |
5a3ea3b4 BP |
771 | * Fix up a possibly partially-processed request so that we can start it over |
772 | * entirely, or even put it back on the request queue. | |
9ce70fb2 PC |
773 | */ |
774 | static void restore_request(struct request *rq) | |
1da177e4 LT |
775 | { |
776 | if (rq->buffer != bio_data(rq->bio)) { | |
83c8565d BP |
777 | sector_t n = |
778 | (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE; | |
1da177e4 LT |
779 | |
780 | rq->buffer = bio_data(rq->bio); | |
781 | rq->nr_sectors += n; | |
782 | rq->sector -= n; | |
783 | } | |
83c8565d BP |
784 | rq->current_nr_sectors = bio_cur_sectors(rq->bio); |
785 | rq->hard_cur_sectors = rq->current_nr_sectors; | |
1da177e4 LT |
786 | rq->hard_nr_sectors = rq->nr_sectors; |
787 | rq->hard_sector = rq->sector; | |
788 | rq->q->prep_rq_fn(rq->q, rq); | |
789 | } | |
790 | ||
5a3ea3b4 BP |
791 | /* |
792 | * All other packet commands. | |
1da177e4 | 793 | */ |
8ee69f5a BZ |
794 | static void ide_cd_request_sense_fixup(struct request *rq) |
795 | { | |
796 | /* | |
797 | * Some of the trailing request sense fields are optional, | |
798 | * and some drives don't send them. Sigh. | |
799 | */ | |
800 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
801 | rq->data_len > 0 && rq->data_len <= 5) | |
802 | while (rq->data_len > 0) { | |
803 | *(u8 *)rq->data++ = 0; | |
804 | --rq->data_len; | |
805 | } | |
806 | } | |
807 | ||
5f828546 FT |
808 | int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, |
809 | int write, void *buffer, unsigned *bufflen, | |
810 | struct request_sense *sense, int timeout, | |
811 | unsigned int cmd_flags) | |
1da177e4 | 812 | { |
5f828546 FT |
813 | struct cdrom_info *info = drive->driver_data; |
814 | struct request_sense local_sense; | |
1da177e4 | 815 | int retries = 10; |
5f828546 | 816 | unsigned int flags = 0; |
1da177e4 | 817 | |
5f828546 FT |
818 | if (!sense) |
819 | sense = &local_sense; | |
1da177e4 | 820 | |
5a3ea3b4 | 821 | /* start of retry loop */ |
1da177e4 | 822 | do { |
5f828546 | 823 | struct request *rq; |
1da177e4 | 824 | int error; |
1da177e4 | 825 | |
5f828546 FT |
826 | rq = blk_get_request(drive->queue, write, __GFP_WAIT); |
827 | ||
828 | memcpy(rq->cmd, cmd, BLK_MAX_CDB); | |
829 | rq->cmd_type = REQ_TYPE_ATA_PC; | |
830 | rq->sense = sense; | |
831 | rq->cmd_flags |= cmd_flags; | |
832 | rq->timeout = timeout; | |
833 | if (buffer) { | |
834 | rq->data = buffer; | |
835 | rq->data_len = *bufflen; | |
836 | } | |
837 | ||
838 | error = blk_execute_rq(drive->queue, info->disk, rq, 0); | |
839 | ||
840 | if (buffer) | |
841 | *bufflen = rq->data_len; | |
842 | ||
843 | flags = rq->cmd_flags; | |
844 | blk_put_request(rq); | |
1da177e4 | 845 | |
5a3ea3b4 BP |
846 | /* |
847 | * FIXME: we should probably abort/retry or something in case of | |
848 | * failure. | |
849 | */ | |
5f828546 | 850 | if (flags & REQ_FAILED) { |
5a3ea3b4 BP |
851 | /* |
852 | * The request failed. Retry if it was due to a unit | |
853 | * attention status (usually means media was changed). | |
854 | */ | |
5f828546 | 855 | struct request_sense *reqbuf = sense; |
1da177e4 LT |
856 | |
857 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
858 | cdrom_saw_media_change(drive); | |
859 | else if (reqbuf->sense_key == NOT_READY && | |
860 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
5a3ea3b4 BP |
861 | /* |
862 | * The drive is in the process of loading | |
863 | * a disk. Retry, but wait a little to give | |
864 | * the drive time to complete the load. | |
865 | */ | |
1da177e4 LT |
866 | ssleep(2); |
867 | } else { | |
5a3ea3b4 | 868 | /* otherwise, don't retry */ |
1da177e4 LT |
869 | retries = 0; |
870 | } | |
871 | --retries; | |
872 | } | |
873 | ||
5a3ea3b4 | 874 | /* end of retry loop */ |
5f828546 | 875 | } while ((flags & REQ_FAILED) && retries >= 0); |
1da177e4 | 876 | |
5a3ea3b4 | 877 | /* return an error if the command failed */ |
5f828546 | 878 | return (flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
879 | } |
880 | ||
aaa04c28 | 881 | /* |
5a3ea3b4 BP |
882 | * Called from blk_end_request_callback() after the data of the request is |
883 | * completed and before the request itself is completed. By returning value '1', | |
884 | * blk_end_request_callback() returns immediately without completing it. | |
aaa04c28 KU |
885 | */ |
886 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) | |
887 | { | |
888 | return 1; | |
889 | } | |
890 | ||
1da177e4 LT |
891 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
892 | { | |
23579a2a | 893 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
894 | struct cdrom_info *info = drive->driver_data; |
895 | struct request *rq = HWGROUP(drive)->rq; | |
1da177e4 | 896 | xfer_func_t *xferfunc; |
0041e7c6 | 897 | ide_expiry_t *expiry = NULL; |
1823649b | 898 | int dma_error = 0, dma, stat, thislen, uptodate = 0; |
ff1bfbc1 BZ |
899 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; |
900 | unsigned int timeout; | |
1823649b BZ |
901 | u16 len; |
902 | u8 ireason; | |
1da177e4 | 903 | |
5a3ea3b4 | 904 | /* check for errors */ |
1da177e4 LT |
905 | dma = info->dma; |
906 | if (dma) { | |
907 | info->dma = 0; | |
5e37bdc0 | 908 | dma_error = hwif->dma_ops->dma_end(drive); |
eba15fba BZ |
909 | if (dma_error) { |
910 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
ff1bfbc1 | 911 | write ? "write" : "read"); |
eba15fba BZ |
912 | ide_dma_off(drive); |
913 | } | |
1da177e4 LT |
914 | } |
915 | ||
916 | if (cdrom_decode_status(drive, 0, &stat)) | |
917 | return ide_stopped; | |
918 | ||
5a3ea3b4 | 919 | /* using dma, transfer is complete now */ |
1da177e4 | 920 | if (dma) { |
eba15fba | 921 | if (dma_error) |
1da177e4 | 922 | return ide_error(drive, "dma error", stat); |
0041e7c6 BZ |
923 | if (blk_fs_request(rq)) { |
924 | ide_end_request(drive, 1, rq->nr_sectors); | |
925 | return ide_stopped; | |
926 | } | |
ff1bfbc1 | 927 | goto end_request; |
1da177e4 LT |
928 | } |
929 | ||
1823649b | 930 | ide_read_bcount_and_ireason(drive, &len, &ireason); |
0041e7c6 BZ |
931 | |
932 | thislen = blk_fs_request(rq) ? len : rq->data_len; | |
1da177e4 LT |
933 | if (thislen > len) |
934 | thislen = len; | |
935 | ||
5a3ea3b4 | 936 | /* If DRQ is clear, the command has completed. */ |
aaa04c28 | 937 | if ((stat & DRQ_STAT) == 0) { |
0041e7c6 BZ |
938 | if (blk_fs_request(rq)) { |
939 | /* | |
940 | * If we're not done reading/writing, complain. | |
941 | * Otherwise, complete the command normally. | |
942 | */ | |
943 | uptodate = 1; | |
944 | if (rq->current_nr_sectors > 0) { | |
945 | printk(KERN_ERR "%s: %s: data underrun " | |
946 | "(%d blocks)\n", | |
177773ed | 947 | drive->name, __func__, |
0041e7c6 BZ |
948 | rq->current_nr_sectors); |
949 | if (!write) | |
950 | rq->cmd_flags |= REQ_FAILED; | |
951 | uptodate = 0; | |
952 | } | |
953 | cdrom_end_request(drive, uptodate); | |
954 | return ide_stopped; | |
955 | } else if (!blk_pc_request(rq)) { | |
ff1bfbc1 | 956 | ide_cd_request_sense_fixup(rq); |
5a3ea3b4 | 957 | /* complain if we still have data left to transfer */ |
ff1bfbc1 BZ |
958 | uptodate = rq->data_len ? 0 : 1; |
959 | } | |
960 | goto end_request; | |
aaa04c28 | 961 | } |
1da177e4 | 962 | |
5a3ea3b4 | 963 | /* check which way to transfer data */ |
9f10d9ee BZ |
964 | if (ide_cd_check_ireason(drive, rq, len, ireason, write)) |
965 | return ide_stopped; | |
0041e7c6 | 966 | |
9f10d9ee BZ |
967 | if (blk_fs_request(rq)) { |
968 | if (write == 0) { | |
0041e7c6 BZ |
969 | int nskip; |
970 | ||
971 | if (ide_cd_check_transfer_size(drive, len)) { | |
972 | cdrom_end_request(drive, 0); | |
973 | return ide_stopped; | |
974 | } | |
975 | ||
976 | /* | |
977 | * First, figure out if we need to bit-bucket | |
978 | * any of the leading sectors. | |
979 | */ | |
980 | nskip = min_t(int, rq->current_nr_sectors | |
981 | - bio_cur_sectors(rq->bio), | |
982 | thislen >> 9); | |
983 | if (nskip > 0) { | |
ae8789f0 | 984 | ide_pad_transfer(drive, write, nskip << 9); |
0041e7c6 BZ |
985 | rq->current_nr_sectors -= nskip; |
986 | thislen -= (nskip << 9); | |
987 | } | |
988 | } | |
ff1bfbc1 | 989 | } |
1da177e4 | 990 | |
ff1bfbc1 BZ |
991 | if (ireason == 0) { |
992 | write = 1; | |
9567b349 | 993 | xferfunc = hwif->output_data; |
9f10d9ee | 994 | } else { |
ff1bfbc1 | 995 | write = 0; |
9567b349 | 996 | xferfunc = hwif->input_data; |
1da177e4 LT |
997 | } |
998 | ||
5a3ea3b4 | 999 | /* transfer data */ |
1da177e4 | 1000 | while (thislen > 0) { |
0041e7c6 | 1001 | u8 *ptr = blk_fs_request(rq) ? NULL : rq->data; |
a11e77db | 1002 | int blen = rq->data_len; |
1da177e4 | 1003 | |
5a3ea3b4 | 1004 | /* bio backed? */ |
1da177e4 | 1005 | if (rq->bio) { |
0041e7c6 BZ |
1006 | if (blk_fs_request(rq)) { |
1007 | ptr = rq->buffer; | |
1008 | blen = rq->current_nr_sectors << 9; | |
1009 | } else { | |
1010 | ptr = bio_data(rq->bio); | |
1011 | blen = bio_iovec(rq->bio)->bv_len; | |
1012 | } | |
1da177e4 LT |
1013 | } |
1014 | ||
1015 | if (!ptr) { | |
0041e7c6 BZ |
1016 | if (blk_fs_request(rq) && !write) |
1017 | /* | |
968c4964 | 1018 | * If the buffers are full, pipe the rest into |
5a3ea3b4 BP |
1019 | * oblivion. |
1020 | */ | |
ae8789f0 | 1021 | ide_pad_transfer(drive, 0, thislen); |
0041e7c6 BZ |
1022 | else { |
1023 | printk(KERN_ERR "%s: confused, missing data\n", | |
1024 | drive->name); | |
1025 | blk_dump_rq_flags(rq, rq_data_dir(rq) | |
1026 | ? "cdrom_newpc_intr, write" | |
1027 | : "cdrom_newpc_intr, read"); | |
1028 | } | |
1da177e4 LT |
1029 | break; |
1030 | } | |
1031 | ||
1032 | if (blen > thislen) | |
1033 | blen = thislen; | |
1034 | ||
9567b349 | 1035 | xferfunc(drive, NULL, ptr, blen); |
1da177e4 LT |
1036 | |
1037 | thislen -= blen; | |
1038 | len -= blen; | |
1da177e4 | 1039 | |
0041e7c6 BZ |
1040 | if (blk_fs_request(rq)) { |
1041 | rq->buffer += blen; | |
1042 | rq->nr_sectors -= (blen >> 9); | |
1043 | rq->current_nr_sectors -= (blen >> 9); | |
1044 | rq->sector += (blen >> 9); | |
1045 | ||
1046 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1047 | cdrom_end_request(drive, 1); | |
1048 | } else { | |
1049 | rq->data_len -= blen; | |
1050 | ||
aaa04c28 KU |
1051 | /* |
1052 | * The request can't be completed until DRQ is cleared. | |
1053 | * So complete the data, but don't complete the request | |
1054 | * using the dummy function for the callback feature | |
1055 | * of blk_end_request_callback(). | |
1056 | */ | |
0041e7c6 BZ |
1057 | if (rq->bio) |
1058 | blk_end_request_callback(rq, 0, blen, | |
aaa04c28 | 1059 | cdrom_newpc_intr_dummy_cb); |
0041e7c6 BZ |
1060 | else |
1061 | rq->data += blen; | |
1062 | } | |
bcd88ac3 AS |
1063 | if (!write && blk_sense_request(rq)) |
1064 | rq->sense_len += blen; | |
1da177e4 LT |
1065 | } |
1066 | ||
5a3ea3b4 | 1067 | /* pad, if necessary */ |
0041e7c6 | 1068 | if (!blk_fs_request(rq) && len > 0) |
ae8789f0 | 1069 | ide_pad_transfer(drive, write, len); |
1da177e4 | 1070 | |
ff1bfbc1 BZ |
1071 | if (blk_pc_request(rq)) { |
1072 | timeout = rq->timeout; | |
ff1bfbc1 BZ |
1073 | } else { |
1074 | timeout = ATAPI_WAIT_PC; | |
0041e7c6 BZ |
1075 | if (!blk_fs_request(rq)) |
1076 | expiry = cdrom_timer_expiry; | |
ff1bfbc1 BZ |
1077 | } |
1078 | ||
1079 | ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); | |
1da177e4 | 1080 | return ide_started; |
ff1bfbc1 BZ |
1081 | |
1082 | end_request: | |
1083 | if (blk_pc_request(rq)) { | |
1084 | unsigned long flags; | |
14e04c3f KU |
1085 | unsigned int dlen = rq->data_len; |
1086 | ||
1087 | if (dma) | |
1088 | rq->data_len = 0; | |
ff1bfbc1 BZ |
1089 | |
1090 | spin_lock_irqsave(&ide_lock, flags); | |
14e04c3f | 1091 | if (__blk_end_request(rq, 0, dlen)) |
ff1bfbc1 BZ |
1092 | BUG(); |
1093 | HWGROUP(drive)->rq = NULL; | |
1094 | spin_unlock_irqrestore(&ide_lock, flags); | |
1095 | } else { | |
1096 | if (!uptodate) | |
1097 | rq->cmd_flags |= REQ_FAILED; | |
1098 | cdrom_end_request(drive, uptodate); | |
1099 | } | |
1100 | return ide_stopped; | |
1da177e4 LT |
1101 | } |
1102 | ||
21ea1f0f | 1103 | static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) |
1da177e4 | 1104 | { |
21ea1f0f BZ |
1105 | struct cdrom_info *cd = drive->driver_data; |
1106 | int write = rq_data_dir(rq) == WRITE; | |
1107 | unsigned short sectors_per_frame = | |
1108 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1da177e4 | 1109 | |
21ea1f0f | 1110 | if (write) { |
5a3ea3b4 | 1111 | /* disk has become write protected */ |
21ea1f0f BZ |
1112 | if (cd->disk->policy) { |
1113 | cdrom_end_request(drive, 0); | |
1114 | return ide_stopped; | |
1115 | } | |
1116 | } else { | |
1117 | /* | |
1118 | * We may be retrying this request after an error. Fix up any | |
1119 | * weirdness which might be present in the request packet. | |
1120 | */ | |
1121 | restore_request(rq); | |
1da177e4 LT |
1122 | } |
1123 | ||
5a3ea3b4 | 1124 | /* use DMA, if possible / writes *must* be hardware frame aligned */ |
21ea1f0f BZ |
1125 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
1126 | (rq->sector & (sectors_per_frame - 1))) { | |
1127 | if (write) { | |
1128 | cdrom_end_request(drive, 0); | |
1129 | return ide_stopped; | |
1130 | } | |
1131 | cd->dma = 0; | |
1132 | } else | |
1133 | cd->dma = drive->using_dma; | |
1da177e4 | 1134 | |
21ea1f0f BZ |
1135 | if (write) |
1136 | cd->devinfo.media_written = 1; | |
1da177e4 | 1137 | |
b6ca440a | 1138 | return ide_started; |
1da177e4 LT |
1139 | } |
1140 | ||
1141 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1142 | { | |
1143 | struct request *rq = HWGROUP(drive)->rq; | |
1144 | ||
1da177e4 LT |
1145 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
1146 | } | |
1147 | ||
b6ca440a | 1148 | static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
1149 | { |
1150 | struct cdrom_info *info = drive->driver_data; | |
1151 | ||
c9f56a80 BZ |
1152 | if (blk_pc_request(rq)) |
1153 | rq->cmd_flags |= REQ_QUIET; | |
1154 | else | |
1155 | rq->cmd_flags &= ~REQ_FAILED; | |
1da177e4 LT |
1156 | |
1157 | info->dma = 0; | |
1da177e4 | 1158 | |
5a3ea3b4 | 1159 | /* sg request */ |
e5318b53 FT |
1160 | if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) { |
1161 | struct request_queue *q = drive->queue; | |
1162 | unsigned int alignment; | |
1163 | unsigned long addr; | |
0b6abc17 | 1164 | unsigned long stack_mask = ~(THREAD_SIZE - 1); |
1da177e4 | 1165 | |
e5318b53 FT |
1166 | if (rq->bio) |
1167 | addr = (unsigned long)bio_data(rq->bio); | |
1168 | else | |
1169 | addr = (unsigned long)rq->data; | |
1170 | ||
1da177e4 LT |
1171 | info->dma = drive->using_dma; |
1172 | ||
1173 | /* | |
1174 | * check if dma is safe | |
5d9e4ea5 LT |
1175 | * |
1176 | * NOTE! The "len" and "addr" checks should possibly have | |
1177 | * separate masks. | |
1da177e4 | 1178 | */ |
e5318b53 FT |
1179 | alignment = queue_dma_alignment(q) | q->dma_pad_mask; |
1180 | if (addr & alignment || rq->data_len & alignment) | |
1da177e4 | 1181 | info->dma = 0; |
0b6abc17 FT |
1182 | |
1183 | if (!((addr & stack_mask) ^ | |
1184 | ((unsigned long)current->stack & stack_mask))) | |
1185 | info->dma = 0; | |
1da177e4 | 1186 | } |
1da177e4 LT |
1187 | } |
1188 | ||
5a3ea3b4 | 1189 | /* |
1da177e4 LT |
1190 | * cdrom driver request routine. |
1191 | */ | |
99384aea | 1192 | static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, |
e5e076a3 | 1193 | sector_t block) |
1da177e4 | 1194 | { |
1da177e4 | 1195 | struct cdrom_info *info = drive->driver_data; |
b6ca440a BP |
1196 | ide_handler_t *fn; |
1197 | int xferlen; | |
1da177e4 LT |
1198 | |
1199 | if (blk_fs_request(rq)) { | |
2bc4cf2d | 1200 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
b73c7ee2 | 1201 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 | 1202 | unsigned long elapsed = jiffies - info->start_seek; |
b73c7ee2 | 1203 | int stat = hwif->read_status(hwif); |
1da177e4 LT |
1204 | |
1205 | if ((stat & SEEK_STAT) != SEEK_STAT) { | |
1206 | if (elapsed < IDECD_SEEK_TIMEOUT) { | |
83c8565d BP |
1207 | ide_stall_queue(drive, |
1208 | IDECD_SEEK_TIMER); | |
1da177e4 LT |
1209 | return ide_stopped; |
1210 | } | |
83c8565d BP |
1211 | printk(KERN_ERR "%s: DSC timeout\n", |
1212 | drive->name); | |
1da177e4 | 1213 | } |
2bc4cf2d | 1214 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
1da177e4 | 1215 | } |
83c8565d BP |
1216 | if (rq_data_dir(rq) == READ && |
1217 | IDE_LARGE_SEEK(info->last_block, block, | |
b6ca440a BP |
1218 | IDECD_SEEK_THRESHOLD) && |
1219 | drive->dsc_overlap) { | |
1220 | xferlen = 0; | |
1221 | fn = cdrom_start_seek_continuation; | |
e529c608 | 1222 | |
4b01fcbb BP |
1223 | info->dma = 0; |
1224 | info->start_seek = jiffies; | |
e529c608 BP |
1225 | |
1226 | ide_cd_prepare_seek_request(drive, rq); | |
b6ca440a BP |
1227 | } else { |
1228 | xferlen = 32768; | |
1229 | fn = cdrom_start_rw_cont; | |
90eb808e | 1230 | |
b6ca440a BP |
1231 | if (cdrom_start_rw(drive, rq) == ide_stopped) |
1232 | return ide_stopped; | |
90eb808e BP |
1233 | |
1234 | if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped) | |
1235 | return ide_stopped; | |
b6ca440a | 1236 | } |
1da177e4 | 1237 | info->last_block = block; |
c9f56a80 | 1238 | } else if (blk_sense_request(rq) || blk_pc_request(rq) || |
cea2885a | 1239 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
b6ca440a BP |
1240 | xferlen = rq->data_len; |
1241 | fn = cdrom_do_newpc_cont; | |
7fcebda5 BP |
1242 | |
1243 | if (!rq->timeout) | |
1244 | rq->timeout = ATAPI_WAIT_PC; | |
1245 | ||
b6ca440a | 1246 | cdrom_do_block_pc(drive, rq); |
4aff5e23 | 1247 | } else if (blk_special_request(rq)) { |
5a3ea3b4 | 1248 | /* right now this can only be a reset... */ |
1da177e4 LT |
1249 | cdrom_end_request(drive, 1); |
1250 | return ide_stopped; | |
ab9d6e33 BP |
1251 | } else { |
1252 | blk_dump_rq_flags(rq, "ide-cd bad flags"); | |
1253 | cdrom_end_request(drive, 0); | |
1254 | return ide_stopped; | |
1da177e4 | 1255 | } |
b6ca440a BP |
1256 | |
1257 | return cdrom_start_packet_command(drive, xferlen, fn); | |
1da177e4 LT |
1258 | } |
1259 | ||
5a3ea3b4 | 1260 | /* |
1da177e4 LT |
1261 | * Ioctl handling. |
1262 | * | |
5a3ea3b4 BP |
1263 | * Routines which queue packet commands take as a final argument a pointer to a |
1264 | * request_sense struct. If execution of the command results in an error with a | |
1265 | * CHECK CONDITION status, this structure will be filled with the results of the | |
1266 | * subsequent request sense command. The pointer can also be NULL, in which case | |
1267 | * no sense information is returned. | |
1da177e4 | 1268 | */ |
e5e076a3 | 1269 | static void msf_from_bcd(struct atapi_msf *msf) |
1da177e4 | 1270 | { |
9a6dc668 BZ |
1271 | msf->minute = BCD2BIN(msf->minute); |
1272 | msf->second = BCD2BIN(msf->second); | |
1273 | msf->frame = BCD2BIN(msf->frame); | |
1da177e4 LT |
1274 | } |
1275 | ||
f9afd18b | 1276 | int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 | 1277 | { |
1da177e4 LT |
1278 | struct cdrom_info *info = drive->driver_data; |
1279 | struct cdrom_device_info *cdi = &info->devinfo; | |
5f828546 | 1280 | unsigned char cmd[BLK_MAX_CDB]; |
1da177e4 | 1281 | |
5f828546 FT |
1282 | memset(cmd, 0, BLK_MAX_CDB); |
1283 | cmd[0] = GPCMD_TEST_UNIT_READY; | |
1da177e4 | 1284 | |
cdf6000d | 1285 | /* |
5a3ea3b4 BP |
1286 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs |
1287 | * instead of supporting the LOAD_UNLOAD opcode. | |
cdf6000d | 1288 | */ |
5f828546 | 1289 | cmd[7] = cdi->sanyo_slot % 3; |
1da177e4 | 1290 | |
5f828546 | 1291 | return ide_cd_queue_pc(drive, cmd, 0, NULL, 0, sense, 0, REQ_QUIET); |
1da177e4 LT |
1292 | } |
1293 | ||
1da177e4 LT |
1294 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
1295 | unsigned long *sectors_per_frame, | |
1296 | struct request_sense *sense) | |
1297 | { | |
1298 | struct { | |
1299 | __u32 lba; | |
1300 | __u32 blocklen; | |
1301 | } capbuf; | |
1302 | ||
1303 | int stat; | |
5f828546 FT |
1304 | unsigned char cmd[BLK_MAX_CDB]; |
1305 | unsigned len = sizeof(capbuf); | |
1da177e4 | 1306 | |
5f828546 FT |
1307 | memset(cmd, 0, BLK_MAX_CDB); |
1308 | cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
1da177e4 | 1309 | |
5f828546 FT |
1310 | stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0, |
1311 | REQ_QUIET); | |
1da177e4 LT |
1312 | if (stat == 0) { |
1313 | *capacity = 1 + be32_to_cpu(capbuf.lba); | |
1314 | *sectors_per_frame = | |
1315 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; | |
1316 | } | |
1317 | ||
1318 | return stat; | |
1319 | } | |
1320 | ||
1321 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
1322 | int format, char *buf, int buflen, | |
1323 | struct request_sense *sense) | |
1324 | { | |
5f828546 | 1325 | unsigned char cmd[BLK_MAX_CDB]; |
1da177e4 | 1326 | |
5f828546 | 1327 | memset(cmd, 0, BLK_MAX_CDB); |
1da177e4 | 1328 | |
5f828546 FT |
1329 | cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
1330 | cmd[6] = trackno; | |
1331 | cmd[7] = (buflen >> 8); | |
1332 | cmd[8] = (buflen & 0xff); | |
1333 | cmd[9] = (format << 6); | |
1da177e4 LT |
1334 | |
1335 | if (msf_flag) | |
5f828546 | 1336 | cmd[1] = 2; |
1da177e4 | 1337 | |
5f828546 | 1338 | return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET); |
1da177e4 LT |
1339 | } |
1340 | ||
1da177e4 | 1341 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
17802998 | 1342 | int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 LT |
1343 | { |
1344 | int stat, ntracks, i; | |
1345 | struct cdrom_info *info = drive->driver_data; | |
1346 | struct cdrom_device_info *cdi = &info->devinfo; | |
1347 | struct atapi_toc *toc = info->toc; | |
1348 | struct { | |
1349 | struct atapi_toc_header hdr; | |
1350 | struct atapi_toc_entry ent; | |
1351 | } ms_tmp; | |
1352 | long last_written; | |
1353 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
1354 | ||
1355 | if (toc == NULL) { | |
5a3ea3b4 | 1356 | /* try to allocate space */ |
2a91f3e5 | 1357 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 | 1358 | if (toc == NULL) { |
83c8565d BP |
1359 | printk(KERN_ERR "%s: No cdrom TOC buffer!\n", |
1360 | drive->name); | |
1da177e4 LT |
1361 | return -ENOMEM; |
1362 | } | |
2a91f3e5 | 1363 | info->toc = toc; |
1da177e4 LT |
1364 | } |
1365 | ||
5a3ea3b4 BP |
1366 | /* |
1367 | * Check to see if the existing data is still valid. If it is, | |
1368 | * just return. | |
1369 | */ | |
1da177e4 LT |
1370 | (void) cdrom_check_status(drive, sense); |
1371 | ||
2bc4cf2d | 1372 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
1da177e4 LT |
1373 | return 0; |
1374 | ||
5a3ea3b4 | 1375 | /* try to get the total cdrom capacity and sector size */ |
1da177e4 LT |
1376 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
1377 | sense); | |
1378 | if (stat) | |
1379 | toc->capacity = 0x1fffff; | |
1380 | ||
1381 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
5a3ea3b4 | 1382 | /* save a private copy of the TOC capacity for error handling */ |
dbe217af AC |
1383 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1384 | ||
1da177e4 LT |
1385 | blk_queue_hardsect_size(drive->queue, |
1386 | sectors_per_frame << SECTOR_BITS); | |
1387 | ||
5a3ea3b4 | 1388 | /* first read just the header, so we know how long the TOC is */ |
1da177e4 LT |
1389 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
1390 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
1391 | if (stat) |
1392 | return stat; | |
1da177e4 | 1393 | |
2bc4cf2d | 1394 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1395 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1396 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1397 | } |
1da177e4 LT |
1398 | |
1399 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
1400 | if (ntracks <= 0) | |
1401 | return -EIO; | |
1402 | if (ntracks > MAX_TRACKS) | |
1403 | ntracks = MAX_TRACKS; | |
1404 | ||
5a3ea3b4 | 1405 | /* now read the whole schmeer */ |
1da177e4 LT |
1406 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
1407 | (char *)&toc->hdr, | |
1408 | sizeof(struct atapi_toc_header) + | |
1409 | (ntracks + 1) * | |
1410 | sizeof(struct atapi_toc_entry), sense); | |
1411 | ||
1412 | if (stat && toc->hdr.first_track > 1) { | |
5a3ea3b4 BP |
1413 | /* |
1414 | * Cds with CDI tracks only don't have any TOC entries, despite | |
1415 | * of this the returned values are | |
1416 | * first_track == last_track = number of CDI tracks + 1, | |
1417 | * so that this case is indistinguishable from the same layout | |
1418 | * plus an additional audio track. If we get an error for the | |
1419 | * regular case, we assume a CDI without additional audio | |
1420 | * tracks. In this case the readable TOC is empty (CDI tracks | |
1421 | * are not included) and only holds the Leadout entry. | |
1422 | * | |
1423 | * Heiko Eißfeldt. | |
1424 | */ | |
1da177e4 LT |
1425 | ntracks = 0; |
1426 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
1427 | (char *)&toc->hdr, | |
1428 | sizeof(struct atapi_toc_header) + | |
1429 | (ntracks + 1) * | |
1430 | sizeof(struct atapi_toc_entry), | |
1431 | sense); | |
cdf6000d | 1432 | if (stat) |
1da177e4 | 1433 | return stat; |
cdf6000d | 1434 | |
2bc4cf2d | 1435 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1436 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
1437 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); | |
cdf6000d | 1438 | } else { |
1da177e4 LT |
1439 | toc->hdr.first_track = CDROM_LEADOUT; |
1440 | toc->hdr.last_track = CDROM_LEADOUT; | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | if (stat) | |
1445 | return stat; | |
1446 | ||
7eb43fd2 | 1447 | toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length); |
1da177e4 | 1448 | |
2bc4cf2d | 1449 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1450 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1451 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1452 | } |
1da177e4 | 1453 | |
cdf6000d | 1454 | for (i = 0; i <= ntracks; i++) { |
2bc4cf2d BZ |
1455 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1456 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) | |
9a6dc668 | 1457 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
1da177e4 LT |
1458 | msf_from_bcd(&toc->ent[i].addr.msf); |
1459 | } | |
9ce70fb2 PC |
1460 | toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute, |
1461 | toc->ent[i].addr.msf.second, | |
1462 | toc->ent[i].addr.msf.frame); | |
1da177e4 LT |
1463 | } |
1464 | ||
1da177e4 | 1465 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
5a3ea3b4 | 1466 | /* read the multisession information */ |
1da177e4 LT |
1467 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
1468 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
1469 | if (stat) |
1470 | return stat; | |
1da177e4 LT |
1471 | |
1472 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
1473 | } else { | |
e5e076a3 BP |
1474 | ms_tmp.hdr.last_track = CDROM_LEADOUT; |
1475 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track; | |
1da177e4 LT |
1476 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
1477 | } | |
1478 | ||
2bc4cf2d | 1479 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
5a3ea3b4 | 1480 | /* re-read multisession information using MSF format */ |
1da177e4 LT |
1481 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
1482 | sizeof(ms_tmp), sense); | |
1483 | if (stat) | |
1484 | return stat; | |
1485 | ||
9ce70fb2 | 1486 | msf_from_bcd(&ms_tmp.ent.addr.msf); |
1da177e4 | 1487 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
9ce70fb2 | 1488 | ms_tmp.ent.addr.msf.second, |
1da177e4 LT |
1489 | ms_tmp.ent.addr.msf.frame); |
1490 | } | |
1da177e4 LT |
1491 | |
1492 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
1493 | ||
5a3ea3b4 | 1494 | /* now try to get the total cdrom capacity */ |
1da177e4 LT |
1495 | stat = cdrom_get_last_written(cdi, &last_written); |
1496 | if (!stat && (last_written > toc->capacity)) { | |
1497 | toc->capacity = last_written; | |
1498 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 1499 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
1500 | } |
1501 | ||
1502 | /* Remember that we've read this stuff. */ | |
2bc4cf2d | 1503 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
1da177e4 LT |
1504 | |
1505 | return 0; | |
1506 | } | |
1507 | ||
17802998 | 1508 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
9235e68b EP |
1509 | { |
1510 | struct cdrom_info *info = drive->driver_data; | |
1511 | struct cdrom_device_info *cdi = &info->devinfo; | |
1512 | struct packet_command cgc; | |
455d80a9 | 1513 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
9235e68b | 1514 | |
e59724c7 | 1515 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
455d80a9 | 1516 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
9235e68b | 1517 | |
455d80a9 | 1518 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
5a3ea3b4 BP |
1519 | do { |
1520 | /* we seem to get stat=0x01,err=0x00 the first time (??) */ | |
9235e68b EP |
1521 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
1522 | if (!stat) | |
1523 | break; | |
1524 | } while (--attempts); | |
1525 | return stat; | |
1526 | } | |
1527 | ||
17802998 | 1528 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
9235e68b | 1529 | { |
4fe67178 | 1530 | struct cdrom_info *cd = drive->driver_data; |
481c8c64 BZ |
1531 | u16 curspeed, maxspeed; |
1532 | ||
455d80a9 BZ |
1533 | curspeed = *(u16 *)&buf[8 + 14]; |
1534 | maxspeed = *(u16 *)&buf[8 + 8]; | |
1535 | ||
e59724c7 | 1536 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
455d80a9 BZ |
1537 | curspeed = le16_to_cpu(curspeed); |
1538 | maxspeed = le16_to_cpu(maxspeed); | |
9235e68b | 1539 | } else { |
455d80a9 BZ |
1540 | curspeed = be16_to_cpu(curspeed); |
1541 | maxspeed = be16_to_cpu(maxspeed); | |
9235e68b | 1542 | } |
481c8c64 | 1543 | |
2bc4cf2d BZ |
1544 | cd->current_speed = (curspeed + (176/2)) / 176; |
1545 | cd->max_speed = (maxspeed + (176/2)) / 176; | |
9235e68b EP |
1546 | } |
1547 | ||
20e7f7ef BZ |
1548 | #define IDE_CD_CAPABILITIES \ |
1549 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ | |
1550 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ | |
1551 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ | |
1552 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ | |
1553 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) | |
1da177e4 | 1554 | |
1da177e4 LT |
1555 | static struct cdrom_device_ops ide_cdrom_dops = { |
1556 | .open = ide_cdrom_open_real, | |
1557 | .release = ide_cdrom_release_real, | |
1558 | .drive_status = ide_cdrom_drive_status, | |
1559 | .media_changed = ide_cdrom_check_media_change_real, | |
1560 | .tray_move = ide_cdrom_tray_move, | |
1561 | .lock_door = ide_cdrom_lock_door, | |
1562 | .select_speed = ide_cdrom_select_speed, | |
1563 | .get_last_session = ide_cdrom_get_last_session, | |
1564 | .get_mcn = ide_cdrom_get_mcn, | |
1565 | .reset = ide_cdrom_reset, | |
1566 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
20e7f7ef | 1567 | .capability = IDE_CD_CAPABILITIES, |
1da177e4 LT |
1568 | .generic_packet = ide_cdrom_packet, |
1569 | }; | |
1570 | ||
9ce70fb2 | 1571 | static int ide_cdrom_register(ide_drive_t *drive, int nslots) |
1da177e4 LT |
1572 | { |
1573 | struct cdrom_info *info = drive->driver_data; | |
1574 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1575 | ||
1576 | devinfo->ops = &ide_cdrom_dops; | |
2bc4cf2d | 1577 | devinfo->speed = info->current_speed; |
1da177e4 | 1578 | devinfo->capacity = nslots; |
2a91f3e5 | 1579 | devinfo->handle = drive; |
1da177e4 | 1580 | strcpy(devinfo->name, drive->name); |
1da177e4 | 1581 | |
2bc4cf2d | 1582 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
3cbd814e BZ |
1583 | devinfo->mask |= CDC_SELECT_SPEED; |
1584 | ||
1da177e4 LT |
1585 | devinfo->disk = info->disk; |
1586 | return register_cdrom(devinfo); | |
1587 | } | |
1588 | ||
e5e076a3 | 1589 | static int ide_cdrom_probe_capabilities(ide_drive_t *drive) |
1da177e4 | 1590 | { |
4fe67178 BZ |
1591 | struct cdrom_info *cd = drive->driver_data; |
1592 | struct cdrom_device_info *cdi = &cd->devinfo; | |
455d80a9 BZ |
1593 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
1594 | mechtype_t mechtype; | |
1da177e4 LT |
1595 | int nslots = 1; |
1596 | ||
3f1b86d8 BZ |
1597 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
1598 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | | |
1599 | CDC_MO_DRIVE | CDC_RAM); | |
1600 | ||
1da177e4 | 1601 | if (drive->media == ide_optical) { |
3f1b86d8 | 1602 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
83c8565d BP |
1603 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", |
1604 | drive->name); | |
1da177e4 LT |
1605 | return nslots; |
1606 | } | |
1607 | ||
e59724c7 | 1608 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
2bc4cf2d | 1609 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
3f1b86d8 | 1610 | cdi->mask &= ~CDC_PLAY_AUDIO; |
1da177e4 LT |
1611 | return nslots; |
1612 | } | |
1613 | ||
1614 | /* | |
5a3ea3b4 BP |
1615 | * We have to cheat a little here. the packet will eventually be queued |
1616 | * with ide_cdrom_packet(), which extracts the drive from cdi->handle. | |
1617 | * Since this device hasn't been registered with the Uniform layer yet, | |
1618 | * it can't do this. Same goes for cdi->ops. | |
1da177e4 | 1619 | */ |
2a91f3e5 | 1620 | cdi->handle = drive; |
1da177e4 LT |
1621 | cdi->ops = &ide_cdrom_dops; |
1622 | ||
455d80a9 | 1623 | if (ide_cdrom_get_capabilities(drive, buf)) |
1da177e4 LT |
1624 | return 0; |
1625 | ||
455d80a9 | 1626 | if ((buf[8 + 6] & 0x01) == 0) |
2bc4cf2d | 1627 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
455d80a9 | 1628 | if (buf[8 + 6] & 0x08) |
2bc4cf2d | 1629 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
455d80a9 | 1630 | if (buf[8 + 3] & 0x01) |
3f1b86d8 | 1631 | cdi->mask &= ~CDC_CD_R; |
455d80a9 | 1632 | if (buf[8 + 3] & 0x02) |
3f1b86d8 | 1633 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
455d80a9 | 1634 | if (buf[8 + 2] & 0x38) |
3f1b86d8 | 1635 | cdi->mask &= ~CDC_DVD; |
455d80a9 | 1636 | if (buf[8 + 3] & 0x20) |
3f1b86d8 | 1637 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
455d80a9 | 1638 | if (buf[8 + 3] & 0x10) |
3f1b86d8 | 1639 | cdi->mask &= ~CDC_DVD_R; |
e59724c7 | 1640 | if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK)) |
3f1b86d8 | 1641 | cdi->mask &= ~CDC_PLAY_AUDIO; |
455d80a9 BZ |
1642 | |
1643 | mechtype = buf[8 + 6] >> 5; | |
1644 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) | |
3f1b86d8 | 1645 | cdi->mask |= CDC_CLOSE_TRAY; |
1da177e4 | 1646 | |
1da177e4 | 1647 | if (cdi->sanyo_slot > 0) { |
3f1b86d8 | 1648 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 | 1649 | nslots = 3; |
cdf6000d BZ |
1650 | } else if (mechtype == mechtype_individual_changer || |
1651 | mechtype == mechtype_cartridge_changer) { | |
2609d06d BZ |
1652 | nslots = cdrom_number_of_slots(cdi); |
1653 | if (nslots > 1) | |
3f1b86d8 | 1654 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 LT |
1655 | } |
1656 | ||
455d80a9 | 1657 | ide_cdrom_update_speed(drive, buf); |
4fe67178 | 1658 | |
1da177e4 | 1659 | printk(KERN_INFO "%s: ATAPI", drive->name); |
4fe67178 BZ |
1660 | |
1661 | /* don't print speed if the drive reported 0 */ | |
2bc4cf2d BZ |
1662 | if (cd->max_speed) |
1663 | printk(KERN_CONT " %dX", cd->max_speed); | |
4fe67178 | 1664 | |
3f1b86d8 | 1665 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
1da177e4 | 1666 | |
3f1b86d8 BZ |
1667 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
1668 | printk(KERN_CONT " DVD%s%s", | |
1669 | (cdi->mask & CDC_DVD_R) ? "" : "-R", | |
1670 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); | |
1da177e4 | 1671 | |
3f1b86d8 BZ |
1672 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
1673 | printk(KERN_CONT " CD%s%s", | |
1674 | (cdi->mask & CDC_CD_R) ? "" : "-R", | |
1675 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); | |
1da177e4 | 1676 | |
3f1b86d8 BZ |
1677 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
1678 | printk(KERN_CONT " changer w/%d slots", nslots); | |
1679 | else | |
1680 | printk(KERN_CONT " drive"); | |
1da177e4 | 1681 | |
455d80a9 | 1682 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12])); |
1da177e4 LT |
1683 | |
1684 | return nslots; | |
1685 | } | |
1686 | ||
5a3ea3b4 | 1687 | /* standard prep_rq_fn that builds 10 byte cmds */ |
165125e1 | 1688 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
1689 | { |
1690 | int hard_sect = queue_hardsect_size(q); | |
1691 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
1692 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
1693 | ||
d34c87e4 | 1694 | memset(rq->cmd, 0, BLK_MAX_CDB); |
1da177e4 LT |
1695 | |
1696 | if (rq_data_dir(rq) == READ) | |
1697 | rq->cmd[0] = GPCMD_READ_10; | |
1698 | else | |
1699 | rq->cmd[0] = GPCMD_WRITE_10; | |
1700 | ||
1701 | /* | |
1702 | * fill in lba | |
1703 | */ | |
1704 | rq->cmd[2] = (block >> 24) & 0xff; | |
1705 | rq->cmd[3] = (block >> 16) & 0xff; | |
1706 | rq->cmd[4] = (block >> 8) & 0xff; | |
1707 | rq->cmd[5] = block & 0xff; | |
1708 | ||
1709 | /* | |
1710 | * and transfer length | |
1711 | */ | |
1712 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
1713 | rq->cmd[8] = blocks & 0xff; | |
1714 | rq->cmd_len = 10; | |
1715 | return BLKPREP_OK; | |
1716 | } | |
1717 | ||
1718 | /* | |
1719 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
1720 | * This transform handles the few exceptions. | |
1721 | */ | |
1722 | static int ide_cdrom_prep_pc(struct request *rq) | |
1723 | { | |
1724 | u8 *c = rq->cmd; | |
1725 | ||
5a3ea3b4 | 1726 | /* transform 6-byte read/write commands to the 10-byte version */ |
1da177e4 LT |
1727 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
1728 | c[8] = c[4]; | |
1729 | c[5] = c[3]; | |
1730 | c[4] = c[2]; | |
1731 | c[3] = c[1] & 0x1f; | |
1732 | c[2] = 0; | |
1733 | c[1] &= 0xe0; | |
1734 | c[0] += (READ_10 - READ_6); | |
1735 | rq->cmd_len = 10; | |
1736 | return BLKPREP_OK; | |
1737 | } | |
1738 | ||
1739 | /* | |
1740 | * it's silly to pretend we understand 6-byte sense commands, just | |
1741 | * reject with ILLEGAL_REQUEST and the caller should take the | |
1742 | * appropriate action | |
1743 | */ | |
1744 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
1745 | rq->errors = ILLEGAL_REQUEST; | |
1746 | return BLKPREP_KILL; | |
1747 | } | |
9ce70fb2 | 1748 | |
1da177e4 LT |
1749 | return BLKPREP_OK; |
1750 | } | |
1751 | ||
165125e1 | 1752 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 1753 | { |
4aff5e23 | 1754 | if (blk_fs_request(rq)) |
1da177e4 | 1755 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 1756 | else if (blk_pc_request(rq)) |
1da177e4 LT |
1757 | return ide_cdrom_prep_pc(rq); |
1758 | ||
1759 | return 0; | |
1760 | } | |
1761 | ||
e59724c7 BZ |
1762 | struct cd_list_entry { |
1763 | const char *id_model; | |
1764 | const char *id_firmware; | |
1765 | unsigned int cd_flags; | |
1766 | }; | |
1767 | ||
5e657a9e BP |
1768 | #ifdef CONFIG_IDE_PROC_FS |
1769 | static sector_t ide_cdrom_capacity(ide_drive_t *drive) | |
1770 | { | |
1771 | unsigned long capacity, sectors_per_frame; | |
1772 | ||
1773 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
1774 | return 0; | |
1775 | ||
1776 | return capacity * sectors_per_frame; | |
1777 | } | |
1778 | ||
e5e076a3 BP |
1779 | static int proc_idecd_read_capacity(char *page, char **start, off_t off, |
1780 | int count, int *eof, void *data) | |
5e657a9e BP |
1781 | { |
1782 | ide_drive_t *drive = data; | |
1783 | int len; | |
1784 | ||
1785 | len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive)); | |
1786 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1787 | } | |
1788 | ||
1789 | static ide_proc_entry_t idecd_proc[] = { | |
1790 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
1791 | { NULL, 0, NULL, NULL } | |
1792 | }; | |
1793 | ||
1794 | static void ide_cdrom_add_settings(ide_drive_t *drive) | |
1795 | { | |
1796 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, | |
1797 | &drive->dsc_overlap, NULL); | |
1798 | } | |
1799 | #else | |
1800 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } | |
1801 | #endif | |
1802 | ||
e59724c7 BZ |
1803 | static const struct cd_list_entry ide_cd_quirks_list[] = { |
1804 | /* Limit transfer size per interrupt. */ | |
1805 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
1806 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
1807 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ | |
1808 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, | |
1809 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ | |
1810 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | | |
1811 | IDE_CD_FLAG_PRE_ATAPI12, }, | |
1812 | /* Vertos 300, some versions of this drive like to talk BCD. */ | |
1813 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, | |
1814 | /* Vertos 600 ESD. */ | |
1815 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, | |
1816 | /* | |
1817 | * Sanyo 3 CD changer uses a non-standard command for CD changing | |
1818 | * (by default standard ATAPI support for CD changers is used). | |
1819 | */ | |
1820 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1821 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1822 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1823 | /* Stingray 8X CD-ROM. */ | |
1824 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, | |
1825 | /* | |
1826 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length | |
1827 | * mode sense page capabilities size, but older drives break. | |
1828 | */ | |
1829 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
1830 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
1831 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ | |
1832 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, | |
1833 | /* | |
1834 | * Some drives used by Apple don't advertise audio play | |
1835 | * but they do support reading TOC & audio datas. | |
1836 | */ | |
1837 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1838 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1839 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1840 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
acbe44e6 | 1841 | { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
e59724c7 BZ |
1842 | { NULL, NULL, 0 } |
1843 | }; | |
1844 | ||
1845 | static unsigned int ide_cd_flags(struct hd_driveid *id) | |
1846 | { | |
1847 | const struct cd_list_entry *cle = ide_cd_quirks_list; | |
1848 | ||
1849 | while (cle->id_model) { | |
1850 | if (strcmp(cle->id_model, id->model) == 0 && | |
1851 | (cle->id_firmware == NULL || | |
1852 | strstr(id->fw_rev, cle->id_firmware))) | |
1853 | return cle->cd_flags; | |
1854 | cle++; | |
1855 | } | |
1856 | ||
1857 | return 0; | |
1858 | } | |
1859 | ||
e5e076a3 | 1860 | static int ide_cdrom_setup(ide_drive_t *drive) |
1da177e4 | 1861 | { |
4fe67178 BZ |
1862 | struct cdrom_info *cd = drive->driver_data; |
1863 | struct cdrom_device_info *cdi = &cd->devinfo; | |
e59724c7 | 1864 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
1865 | int nslots; |
1866 | ||
1867 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); | |
1868 | blk_queue_dma_alignment(drive->queue, 31); | |
e5318b53 | 1869 | blk_queue_update_dma_pad(drive->queue, 15); |
1da177e4 LT |
1870 | drive->queue->unplug_delay = (1 * HZ) / 1000; |
1871 | if (!drive->queue->unplug_delay) | |
1872 | drive->queue->unplug_delay = 1; | |
1873 | ||
1874 | drive->special.all = 0; | |
1875 | ||
e59724c7 BZ |
1876 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
1877 | ide_cd_flags(id); | |
1da177e4 | 1878 | |
e59724c7 | 1879 | if ((id->config & 0x0060) == 0x20) |
2bc4cf2d | 1880 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
e59724c7 BZ |
1881 | |
1882 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && | |
1883 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d BZ |
1884 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
1885 | IDE_CD_FLAG_TOCADDR_AS_BCD); | |
e59724c7 BZ |
1886 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
1887 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d | 1888 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
e59724c7 | 1889 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
5a3ea3b4 BP |
1890 | /* 3 => use CD in slot 0 */ |
1891 | cdi->sanyo_slot = 3; | |
1da177e4 | 1892 | |
9ce70fb2 | 1893 | nslots = ide_cdrom_probe_capabilities(drive); |
1da177e4 | 1894 | |
5a3ea3b4 | 1895 | /* set correct block size */ |
1da177e4 LT |
1896 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); |
1897 | ||
cc12175f | 1898 | drive->dsc_overlap = (drive->next != drive); |
1da177e4 LT |
1899 | |
1900 | if (ide_cdrom_register(drive, nslots)) { | |
83c8565d BP |
1901 | printk(KERN_ERR "%s: %s failed to register device with the" |
1902 | " cdrom driver.\n", drive->name, __func__); | |
4fe67178 | 1903 | cd->devinfo.handle = NULL; |
1da177e4 LT |
1904 | return 1; |
1905 | } | |
1906 | ide_cdrom_add_settings(drive); | |
1907 | return 0; | |
1908 | } | |
1909 | ||
4031bbe4 | 1910 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
1911 | { |
1912 | struct cdrom_info *info = drive->driver_data; | |
1913 | ||
7662d046 | 1914 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
1915 | |
1916 | del_gendisk(info->disk); | |
1917 | ||
1918 | ide_cd_put(info); | |
1da177e4 LT |
1919 | } |
1920 | ||
1921 | static void ide_cd_release(struct kref *kref) | |
1922 | { | |
1923 | struct cdrom_info *info = to_ide_cd(kref); | |
1924 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1925 | ide_drive_t *drive = info->drive; | |
1926 | struct gendisk *g = info->disk; | |
1927 | ||
6044ec88 | 1928 | kfree(info->toc); |
0a0c4114 AM |
1929 | if (devinfo->handle == drive) |
1930 | unregister_cdrom(devinfo); | |
1da177e4 LT |
1931 | drive->dsc_overlap = 0; |
1932 | drive->driver_data = NULL; | |
1933 | blk_queue_prep_rq(drive->queue, NULL); | |
1934 | g->private_data = NULL; | |
1935 | put_disk(g); | |
1936 | kfree(info); | |
1937 | } | |
1938 | ||
4031bbe4 | 1939 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 1940 | |
1da177e4 | 1941 | static ide_driver_t ide_cdrom_driver = { |
8604affd | 1942 | .gen_driver = { |
4ef3b8f4 | 1943 | .owner = THIS_MODULE, |
8604affd BZ |
1944 | .name = "ide-cdrom", |
1945 | .bus = &ide_bus_type, | |
8604affd | 1946 | }, |
4031bbe4 RK |
1947 | .probe = ide_cd_probe, |
1948 | .remove = ide_cd_remove, | |
1da177e4 LT |
1949 | .version = IDECD_VERSION, |
1950 | .media = ide_cdrom, | |
1da177e4 | 1951 | .supports_dsc_overlap = 1, |
99384aea | 1952 | .do_request = ide_cd_do_request, |
1da177e4 LT |
1953 | .end_request = ide_end_request, |
1954 | .error = __ide_error, | |
7662d046 | 1955 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1956 | .proc = idecd_proc, |
7662d046 | 1957 | #endif |
1da177e4 LT |
1958 | }; |
1959 | ||
9ce70fb2 | 1960 | static int idecd_open(struct inode *inode, struct file *file) |
1da177e4 LT |
1961 | { |
1962 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1963 | struct cdrom_info *info; | |
1da177e4 LT |
1964 | int rc = -ENOMEM; |
1965 | ||
9ce70fb2 PC |
1966 | info = ide_cd_get(disk); |
1967 | if (!info) | |
1da177e4 LT |
1968 | return -ENXIO; |
1969 | ||
968c4964 | 1970 | rc = cdrom_open(&info->devinfo, inode, file); |
1da177e4 LT |
1971 | |
1972 | if (rc < 0) | |
1973 | ide_cd_put(info); | |
1974 | ||
1975 | return rc; | |
1976 | } | |
1977 | ||
9ce70fb2 | 1978 | static int idecd_release(struct inode *inode, struct file *file) |
1da177e4 LT |
1979 | { |
1980 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1981 | struct cdrom_info *info = ide_cd_g(disk); | |
1da177e4 | 1982 | |
9ce70fb2 | 1983 | cdrom_release(&info->devinfo, file); |
1da177e4 LT |
1984 | |
1985 | ide_cd_put(info); | |
1986 | ||
1987 | return 0; | |
1988 | } | |
1989 | ||
6a2900b6 CH |
1990 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
1991 | { | |
1992 | struct packet_command cgc; | |
1993 | char buffer[16]; | |
1994 | int stat; | |
1995 | char spindown; | |
1996 | ||
1997 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
1998 | return -EFAULT; | |
1999 | ||
2000 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2001 | ||
2002 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2003 | if (stat) | |
2004 | return stat; | |
2005 | ||
2006 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
2007 | return cdrom_mode_select(cdi, &cgc); | |
2008 | } | |
2009 | ||
2010 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
2011 | { | |
2012 | struct packet_command cgc; | |
2013 | char buffer[16]; | |
2014 | int stat; | |
9ce70fb2 | 2015 | char spindown; |
6a2900b6 CH |
2016 | |
2017 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2018 | ||
2019 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2020 | if (stat) | |
2021 | return stat; | |
2022 | ||
2023 | spindown = buffer[11] & 0x0f; | |
9ce70fb2 | 2024 | if (copy_to_user((void __user *)arg, &spindown, sizeof(char))) |
6a2900b6 CH |
2025 | return -EFAULT; |
2026 | return 0; | |
2027 | } | |
2028 | ||
9ce70fb2 | 2029 | static int idecd_ioctl(struct inode *inode, struct file *file, |
1da177e4 LT |
2030 | unsigned int cmd, unsigned long arg) |
2031 | { | |
2032 | struct block_device *bdev = inode->i_bdev; | |
2033 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); | |
2034 | int err; | |
2035 | ||
6a2900b6 | 2036 | switch (cmd) { |
9ce70fb2 | 2037 | case CDROMSETSPINDOWN: |
6a2900b6 | 2038 | return idecd_set_spindown(&info->devinfo, arg); |
9ce70fb2 | 2039 | case CDROMGETSPINDOWN: |
6a2900b6 CH |
2040 | return idecd_get_spindown(&info->devinfo, arg); |
2041 | default: | |
2042 | break; | |
9ce70fb2 | 2043 | } |
6a2900b6 CH |
2044 | |
2045 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); | |
1da177e4 LT |
2046 | if (err == -EINVAL) |
2047 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); | |
2048 | ||
2049 | return err; | |
2050 | } | |
2051 | ||
2052 | static int idecd_media_changed(struct gendisk *disk) | |
2053 | { | |
2054 | struct cdrom_info *info = ide_cd_g(disk); | |
2055 | return cdrom_media_changed(&info->devinfo); | |
2056 | } | |
2057 | ||
2058 | static int idecd_revalidate_disk(struct gendisk *disk) | |
2059 | { | |
2060 | struct cdrom_info *info = ide_cd_g(disk); | |
2061 | struct request_sense sense; | |
139c829d BZ |
2062 | |
2063 | ide_cd_read_toc(info->drive, &sense); | |
2064 | ||
1da177e4 LT |
2065 | return 0; |
2066 | } | |
2067 | ||
2068 | static struct block_device_operations idecd_ops = { | |
9ce70fb2 PC |
2069 | .owner = THIS_MODULE, |
2070 | .open = idecd_open, | |
2071 | .release = idecd_release, | |
2072 | .ioctl = idecd_ioctl, | |
2073 | .media_changed = idecd_media_changed, | |
2074 | .revalidate_disk = idecd_revalidate_disk | |
1da177e4 LT |
2075 | }; |
2076 | ||
5a3ea3b4 | 2077 | /* module options */ |
9ce70fb2 | 2078 | static char *ignore; |
1da177e4 LT |
2079 | |
2080 | module_param(ignore, charp, 0400); | |
2081 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); | |
2082 | ||
4031bbe4 | 2083 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
2084 | { |
2085 | struct cdrom_info *info; | |
2086 | struct gendisk *g; | |
2087 | struct request_sense sense; | |
2088 | ||
2089 | if (!strstr("ide-cdrom", drive->driver_req)) | |
2090 | goto failed; | |
2091 | if (!drive->present) | |
2092 | goto failed; | |
2093 | if (drive->media != ide_cdrom && drive->media != ide_optical) | |
2094 | goto failed; | |
2095 | /* skip drives that we were told to ignore */ | |
2096 | if (ignore != NULL) { | |
2097 | if (strstr(ignore, drive->name)) { | |
83c8565d BP |
2098 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", |
2099 | drive->name); | |
1da177e4 LT |
2100 | goto failed; |
2101 | } | |
2102 | } | |
f5e3c2fa | 2103 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 | 2104 | if (info == NULL) { |
83c8565d BP |
2105 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", |
2106 | drive->name); | |
1da177e4 LT |
2107 | goto failed; |
2108 | } | |
2109 | ||
2110 | g = alloc_disk(1 << PARTN_BITS); | |
2111 | if (!g) | |
2112 | goto out_free_cd; | |
2113 | ||
2114 | ide_init_disk(g, drive); | |
2115 | ||
7662d046 | 2116 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
8604affd | 2117 | |
1da177e4 LT |
2118 | kref_init(&info->kref); |
2119 | ||
2120 | info->drive = drive; | |
2121 | info->driver = &ide_cdrom_driver; | |
2122 | info->disk = g; | |
2123 | ||
2124 | g->private_data = &info->driver; | |
2125 | ||
2126 | drive->driver_data = info; | |
2127 | ||
1da177e4 | 2128 | g->minors = 1; |
1da177e4 LT |
2129 | g->driverfs_dev = &drive->gendev; |
2130 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
2131 | if (ide_cdrom_setup(drive)) { | |
7662d046 | 2132 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
05017db3 | 2133 | ide_cd_release(&info->kref); |
1da177e4 LT |
2134 | goto failed; |
2135 | } | |
1da177e4 | 2136 | |
139c829d | 2137 | ide_cd_read_toc(drive, &sense); |
1da177e4 LT |
2138 | g->fops = &idecd_ops; |
2139 | g->flags |= GENHD_FL_REMOVABLE; | |
2140 | add_disk(g); | |
2141 | return 0; | |
2142 | ||
1da177e4 LT |
2143 | out_free_cd: |
2144 | kfree(info); | |
2145 | failed: | |
8604affd | 2146 | return -ENODEV; |
1da177e4 LT |
2147 | } |
2148 | ||
2149 | static void __exit ide_cdrom_exit(void) | |
2150 | { | |
8604affd | 2151 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 2152 | } |
17514e8a BZ |
2153 | |
2154 | static int __init ide_cdrom_init(void) | |
1da177e4 | 2155 | { |
8604affd | 2156 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
2157 | } |
2158 | ||
263756ec | 2159 | MODULE_ALIAS("ide:*m-cdrom*"); |
972560fb | 2160 | MODULE_ALIAS("ide-cd"); |
1da177e4 LT |
2161 | module_init(ide_cdrom_init); |
2162 | module_exit(ide_cdrom_exit); | |
2163 | MODULE_LICENSE("GPL"); |