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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 LT |
41 | |
42 | #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */ | |
43 | ||
44 | #include <asm/irq.h> | |
45 | #include <asm/io.h> | |
46 | #include <asm/byteorder.h> | |
47 | #include <asm/uaccess.h> | |
48 | #include <asm/unaligned.h> | |
49 | ||
50 | #include "ide-cd.h" | |
51 | ||
cf8b8975 | 52 | static DEFINE_MUTEX(idecd_ref_mutex); |
1da177e4 | 53 | |
9ce70fb2 | 54 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) |
1da177e4 LT |
55 | |
56 | #define ide_cd_g(disk) \ | |
57 | container_of((disk)->private_data, struct cdrom_info, driver) | |
58 | ||
59 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) | |
60 | { | |
61 | struct cdrom_info *cd = NULL; | |
62 | ||
cf8b8975 | 63 | mutex_lock(&idecd_ref_mutex); |
1da177e4 LT |
64 | cd = ide_cd_g(disk); |
65 | if (cd) | |
66 | kref_get(&cd->kref); | |
cf8b8975 | 67 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
68 | return cd; |
69 | } | |
70 | ||
71 | static void ide_cd_release(struct kref *); | |
72 | ||
73 | static void ide_cd_put(struct cdrom_info *cd) | |
74 | { | |
cf8b8975 | 75 | mutex_lock(&idecd_ref_mutex); |
1da177e4 | 76 | kref_put(&cd->kref, ide_cd_release); |
cf8b8975 | 77 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
78 | } |
79 | ||
80 | /**************************************************************************** | |
81 | * Generic packet command support and error handling routines. | |
82 | */ | |
83 | ||
84 | /* Mark that we've seen a media change, and invalidate our internal | |
85 | 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 | /* | |
108 | * don't care about tray state messages for | |
109 | * e.g. capacity commands or in-progress or | |
110 | * becoming ready | |
111 | */ | |
112 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
1da177e4 | 113 | break; |
9ce70fb2 PC |
114 | log = 1; |
115 | break; | |
116 | case ILLEGAL_REQUEST: | |
117 | /* | |
118 | * don't log START_STOP unit with LoEj set, since | |
119 | * we cannot reliably check if drive can auto-close | |
120 | */ | |
121 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
1da177e4 | 122 | break; |
9ce70fb2 PC |
123 | log = 1; |
124 | break; | |
125 | case UNIT_ATTENTION: | |
126 | /* | |
127 | * Make good and sure we've seen this potential media | |
128 | * change. Some drives (i.e. Creative) fail to present | |
129 | * the correct sense key in the error register. | |
130 | */ | |
131 | cdrom_saw_media_change(drive); | |
132 | break; | |
133 | default: | |
134 | log = 1; | |
135 | break; | |
1da177e4 LT |
136 | } |
137 | return log; | |
138 | } | |
139 | ||
140 | static | |
141 | void cdrom_analyze_sense_data(ide_drive_t *drive, | |
142 | struct request *failed_command, | |
143 | struct request_sense *sense) | |
144 | { | |
dbe217af AC |
145 | unsigned long sector; |
146 | unsigned long bio_sectors; | |
147 | unsigned long valid; | |
148 | struct cdrom_info *info = drive->driver_data; | |
149 | ||
1da177e4 LT |
150 | if (!cdrom_log_sense(drive, failed_command, sense)) |
151 | return; | |
152 | ||
153 | /* | |
154 | * If a read toc is executed for a CD-R or CD-RW medium where | |
155 | * the first toc has not been recorded yet, it will fail with | |
156 | * 05/24/00 (which is a confusing error) | |
157 | */ | |
158 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
159 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
160 | return; | |
161 | ||
9ce70fb2 PC |
162 | if (sense->error_code == 0x70) { /* Current Error */ |
163 | switch (sense->sense_key) { | |
dbe217af AC |
164 | case MEDIUM_ERROR: |
165 | case VOLUME_OVERFLOW: | |
166 | case ILLEGAL_REQUEST: | |
167 | if (!sense->valid) | |
168 | break; | |
169 | if (failed_command == NULL || | |
170 | !blk_fs_request(failed_command)) | |
171 | break; | |
172 | sector = (sense->information[0] << 24) | | |
173 | (sense->information[1] << 16) | | |
174 | (sense->information[2] << 8) | | |
175 | (sense->information[3]); | |
176 | ||
177 | bio_sectors = bio_sectors(failed_command->bio); | |
178 | if (bio_sectors < 4) | |
179 | bio_sectors = 4; | |
180 | if (drive->queue->hardsect_size == 2048) | |
181 | sector <<= 2; /* Device sector size is 2K */ | |
9ce70fb2 | 182 | sector &= ~(bio_sectors - 1); |
dbe217af AC |
183 | valid = (sector - failed_command->sector) << 9; |
184 | ||
185 | if (valid < 0) | |
186 | valid = 0; | |
187 | if (sector < get_capacity(info->disk) && | |
188 | drive->probed_capacity - sector < 4 * 75) { | |
189 | set_capacity(info->disk, sector); | |
190 | } | |
9ce70fb2 PC |
191 | } |
192 | } | |
1da177e4 | 193 | |
972560fb | 194 | ide_cd_log_error(drive->name, failed_command, sense); |
1da177e4 LT |
195 | } |
196 | ||
197 | /* | |
198 | * Initialize a ide-cd packet command request | |
199 | */ | |
17802998 | 200 | void ide_cd_init_rq(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
201 | { |
202 | struct cdrom_info *cd = drive->driver_data; | |
203 | ||
204 | ide_init_drive_cmd(rq); | |
cea2885a | 205 | rq->cmd_type = REQ_TYPE_ATA_PC; |
1da177e4 LT |
206 | rq->rq_disk = cd->disk; |
207 | } | |
208 | ||
209 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, | |
210 | struct request *failed_command) | |
211 | { | |
212 | struct cdrom_info *info = drive->driver_data; | |
213 | struct request *rq = &info->request_sense_request; | |
214 | ||
215 | if (sense == NULL) | |
216 | sense = &info->sense_data; | |
217 | ||
218 | /* stuff the sense request in front of our current request */ | |
139c829d | 219 | ide_cd_init_rq(drive, rq); |
1da177e4 LT |
220 | |
221 | rq->data = sense; | |
222 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
223 | rq->cmd[4] = rq->data_len = 18; | |
224 | ||
4aff5e23 | 225 | rq->cmd_type = REQ_TYPE_SENSE; |
1da177e4 LT |
226 | |
227 | /* NOTE! Save the failed command in "rq->buffer" */ | |
228 | rq->buffer = (void *) failed_command; | |
229 | ||
230 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
231 | } | |
232 | ||
9ce70fb2 | 233 | static void cdrom_end_request(ide_drive_t *drive, int uptodate) |
1da177e4 LT |
234 | { |
235 | struct request *rq = HWGROUP(drive)->rq; | |
236 | int nsectors = rq->hard_cur_sectors; | |
237 | ||
4aff5e23 | 238 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 239 | /* |
4aff5e23 JA |
240 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
241 | * failed request | |
1da177e4 LT |
242 | */ |
243 | struct request *failed = (struct request *) rq->buffer; | |
244 | struct cdrom_info *info = drive->driver_data; | |
245 | void *sense = &info->sense_data; | |
246 | unsigned long flags; | |
247 | ||
248 | if (failed) { | |
249 | if (failed->sense) { | |
250 | sense = failed->sense; | |
251 | failed->sense_len = rq->sense_len; | |
252 | } | |
dbe217af | 253 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 LT |
254 | /* |
255 | * now end failed request | |
256 | */ | |
dbe217af AC |
257 | if (blk_fs_request(failed)) { |
258 | if (ide_end_dequeued_request(drive, failed, 0, | |
259 | failed->hard_nr_sectors)) | |
260 | BUG(); | |
261 | } else { | |
262 | spin_lock_irqsave(&ide_lock, flags); | |
5e36bb6e KU |
263 | if (__blk_end_request(failed, -EIO, |
264 | failed->data_len)) | |
265 | BUG(); | |
dbe217af AC |
266 | spin_unlock_irqrestore(&ide_lock, flags); |
267 | } | |
268 | } else | |
269 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
270 | } |
271 | ||
272 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
273 | uptodate = 1; | |
274 | /* make sure it's fully ended */ | |
275 | if (blk_pc_request(rq)) | |
276 | nsectors = (rq->data_len + 511) >> 9; | |
277 | if (!nsectors) | |
278 | nsectors = 1; | |
279 | ||
280 | ide_end_request(drive, uptodate, nsectors); | |
281 | } | |
282 | ||
dbe217af AC |
283 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
284 | { | |
285 | if (stat & 0x80) | |
286 | return; | |
287 | ide_dump_status(drive, msg, stat); | |
288 | } | |
289 | ||
1da177e4 LT |
290 | /* Returns 0 if the request should be continued. |
291 | Returns 1 if the request was ended. */ | |
292 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) | |
293 | { | |
294 | struct request *rq = HWGROUP(drive)->rq; | |
295 | int stat, err, sense_key; | |
9ce70fb2 | 296 | |
1da177e4 | 297 | /* Check for errors. */ |
c47137a9 BZ |
298 | stat = ide_read_status(drive); |
299 | ||
1da177e4 LT |
300 | if (stat_ret) |
301 | *stat_ret = stat; | |
302 | ||
303 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
304 | return 0; | |
305 | ||
306 | /* Get the IDE error register. */ | |
64a57fe4 | 307 | err = ide_read_error(drive); |
1da177e4 LT |
308 | sense_key = err >> 4; |
309 | ||
310 | if (rq == NULL) { | |
311 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); | |
312 | return 1; | |
313 | } | |
314 | ||
4aff5e23 | 315 | if (blk_sense_request(rq)) { |
1da177e4 LT |
316 | /* We got an error trying to get sense info |
317 | from the drive (probably while trying | |
318 | to recover from a former error). Just give up. */ | |
319 | ||
4aff5e23 | 320 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
321 | cdrom_end_request(drive, 0); |
322 | ide_error(drive, "request sense failure", stat); | |
323 | return 1; | |
324 | ||
8770c018 | 325 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 326 | /* All other functions, except for READ. */ |
1da177e4 LT |
327 | |
328 | /* | |
329 | * if we have an error, pass back CHECK_CONDITION as the | |
330 | * scsi status byte | |
331 | */ | |
b7156731 | 332 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
333 | rq->errors = SAM_STAT_CHECK_CONDITION; |
334 | ||
335 | /* Check for tray open. */ | |
336 | if (sense_key == NOT_READY) { | |
9ce70fb2 | 337 | cdrom_saw_media_change(drive); |
1da177e4 LT |
338 | } else if (sense_key == UNIT_ATTENTION) { |
339 | /* Check for media change. */ | |
9ce70fb2 | 340 | cdrom_saw_media_change(drive); |
1da177e4 LT |
341 | /*printk("%s: media changed\n",drive->name);*/ |
342 | return 0; | |
9ce70fb2 PC |
343 | } else if (sense_key == ILLEGAL_REQUEST && |
344 | rq->cmd[0] == GPCMD_START_STOP_UNIT) { | |
345 | /* | |
346 | * Don't print error message for this condition-- | |
347 | * SFF8090i indicates that 5/24/00 is the correct | |
348 | * response to a request to close the tray if the | |
349 | * drive doesn't have that capability. | |
350 | * cdrom_log_sense() knows this! | |
351 | */ | |
4aff5e23 | 352 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
1da177e4 LT |
353 | /* Otherwise, print an error. */ |
354 | ide_dump_status(drive, "packet command error", stat); | |
355 | } | |
9ce70fb2 | 356 | |
4aff5e23 | 357 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
358 | |
359 | /* | |
360 | * instead of playing games with moving completions around, | |
361 | * remove failed request completely and end it when the | |
362 | * request sense has completed | |
363 | */ | |
bbb89e3d | 364 | goto end_request; |
1da177e4 LT |
365 | |
366 | } else if (blk_fs_request(rq)) { | |
367 | int do_end_request = 0; | |
368 | ||
369 | /* Handle errors from READ and WRITE requests. */ | |
370 | ||
371 | if (blk_noretry_request(rq)) | |
372 | do_end_request = 1; | |
373 | ||
374 | if (sense_key == NOT_READY) { | |
375 | /* Tray open. */ | |
376 | if (rq_data_dir(rq) == READ) { | |
9ce70fb2 | 377 | cdrom_saw_media_change(drive); |
1da177e4 LT |
378 | |
379 | /* Fail the request. */ | |
9ce70fb2 | 380 | printk("%s: tray open\n", drive->name); |
1da177e4 LT |
381 | do_end_request = 1; |
382 | } else { | |
383 | struct cdrom_info *info = drive->driver_data; | |
384 | ||
385 | /* allow the drive 5 seconds to recover, some | |
386 | * devices will return this error while flushing | |
387 | * data from cache */ | |
388 | if (!rq->errors) | |
389 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; | |
390 | rq->errors = 1; | |
391 | if (time_after(jiffies, info->write_timeout)) | |
392 | do_end_request = 1; | |
393 | else { | |
394 | unsigned long flags; | |
395 | ||
396 | /* | |
397 | * take a breather relying on the | |
398 | * unplug timer to kick us again | |
399 | */ | |
400 | spin_lock_irqsave(&ide_lock, flags); | |
401 | blk_plug_device(drive->queue); | |
9ce70fb2 | 402 | spin_unlock_irqrestore(&ide_lock, flags); |
1da177e4 LT |
403 | return 1; |
404 | } | |
405 | } | |
406 | } else if (sense_key == UNIT_ATTENTION) { | |
407 | /* Media change. */ | |
408 | cdrom_saw_media_change (drive); | |
409 | ||
9ce70fb2 PC |
410 | /* |
411 | * Arrange to retry the request. | |
412 | * But be sure to give up if we've retried | |
413 | * too many times. | |
414 | */ | |
1da177e4 LT |
415 | if (++rq->errors > ERROR_MAX) |
416 | do_end_request = 1; | |
417 | } else if (sense_key == ILLEGAL_REQUEST || | |
418 | sense_key == DATA_PROTECT) { | |
9ce70fb2 PC |
419 | /* |
420 | * No point in retrying after an illegal | |
421 | * request or data protect error. | |
422 | */ | |
423 | ide_dump_status_no_sense(drive, "command error", stat); | |
1da177e4 LT |
424 | do_end_request = 1; |
425 | } else if (sense_key == MEDIUM_ERROR) { | |
9ce70fb2 PC |
426 | /* |
427 | * No point in re-trying a zillion times on a bad | |
428 | * sector... If we got here the error is not correctable | |
429 | */ | |
430 | ide_dump_status_no_sense(drive, "media error (bad sector)", stat); | |
1da177e4 LT |
431 | do_end_request = 1; |
432 | } else if (sense_key == BLANK_CHECK) { | |
433 | /* Disk appears blank ?? */ | |
9ce70fb2 | 434 | ide_dump_status_no_sense(drive, "media error (blank)", stat); |
1da177e4 LT |
435 | do_end_request = 1; |
436 | } else if ((err & ~ABRT_ERR) != 0) { | |
437 | /* Go to the default handler | |
438 | for other errors. */ | |
439 | ide_error(drive, "cdrom_decode_status", stat); | |
440 | return 1; | |
441 | } else if ((++rq->errors > ERROR_MAX)) { | |
442 | /* We've racked up too many retries. Abort. */ | |
443 | do_end_request = 1; | |
444 | } | |
445 | ||
dbe217af AC |
446 | /* End a request through request sense analysis when we have |
447 | sense data. We need this in order to perform end of media | |
448 | processing */ | |
449 | ||
bbb89e3d BZ |
450 | if (do_end_request) |
451 | goto end_request; | |
dbe217af | 452 | |
bbb89e3d BZ |
453 | /* |
454 | * If we got a CHECK_CONDITION status, | |
455 | * queue a request sense command. | |
456 | */ | |
457 | if (stat & ERR_STAT) | |
458 | cdrom_queue_request_sense(drive, NULL, NULL); | |
1da177e4 LT |
459 | } else { |
460 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); | |
461 | cdrom_end_request(drive, 0); | |
462 | } | |
463 | ||
464 | /* Retry, or handle the next request. */ | |
465 | return 1; | |
bbb89e3d BZ |
466 | |
467 | end_request: | |
468 | if (stat & ERR_STAT) { | |
469 | unsigned long flags; | |
470 | ||
471 | spin_lock_irqsave(&ide_lock, flags); | |
472 | blkdev_dequeue_request(rq); | |
473 | HWGROUP(drive)->rq = NULL; | |
474 | spin_unlock_irqrestore(&ide_lock, flags); | |
475 | ||
476 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
477 | } else | |
478 | cdrom_end_request(drive, 0); | |
479 | ||
480 | return 1; | |
1da177e4 LT |
481 | } |
482 | ||
483 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
484 | { | |
485 | struct request *rq = HWGROUP(drive)->rq; | |
486 | unsigned long wait = 0; | |
487 | ||
488 | /* | |
489 | * Some commands are *slow* and normally take a long time to | |
490 | * complete. Usually we can use the ATAPI "disconnect" to bypass | |
491 | * this, but not all commands/drives support that. Let | |
492 | * ide_timer_expiry keep polling us for these. | |
493 | */ | |
494 | switch (rq->cmd[0]) { | |
9ce70fb2 PC |
495 | case GPCMD_BLANK: |
496 | case GPCMD_FORMAT_UNIT: | |
497 | case GPCMD_RESERVE_RZONE_TRACK: | |
498 | case GPCMD_CLOSE_TRACK: | |
499 | case GPCMD_FLUSH_CACHE: | |
500 | wait = ATAPI_WAIT_PC; | |
501 | break; | |
502 | default: | |
503 | if (!(rq->cmd_flags & REQ_QUIET)) | |
504 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); | |
505 | wait = 0; | |
506 | break; | |
1da177e4 LT |
507 | } |
508 | return wait; | |
509 | } | |
510 | ||
511 | /* Set up the device registers for transferring a packet command on DEV, | |
512 | expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
513 | which actually transfers the command to the drive. If this is a | |
514 | drq_interrupt device, this routine will arrange for HANDLER to be | |
515 | called when the interrupt from the drive arrives. Otherwise, HANDLER | |
516 | will be called immediately after the drive is prepared for the transfer. */ | |
517 | ||
518 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, | |
519 | int xferlen, | |
520 | ide_handler_t *handler) | |
521 | { | |
522 | ide_startstop_t startstop; | |
523 | struct cdrom_info *info = drive->driver_data; | |
524 | ide_hwif_t *hwif = drive->hwif; | |
525 | ||
526 | /* Wait for the controller to be idle. */ | |
527 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) | |
528 | return startstop; | |
529 | ||
3a6a3549 | 530 | /* FIXME: for Virtual DMA we must check harder */ |
1da177e4 LT |
531 | if (info->dma) |
532 | info->dma = !hwif->dma_setup(drive); | |
533 | ||
534 | /* Set up the controller registers. */ | |
2fc57388 BZ |
535 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
536 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); | |
4fe67178 | 537 | |
2bc4cf2d | 538 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
f0dd8712 AL |
539 | /* waiting for CDB interrupt, not DMA yet. */ |
540 | if (info->dma) | |
541 | drive->waiting_for_dma = 0; | |
542 | ||
1da177e4 LT |
543 | /* packet command */ |
544 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
545 | return ide_started; | |
546 | } else { | |
547 | unsigned long flags; | |
548 | ||
549 | /* packet command */ | |
550 | spin_lock_irqsave(&ide_lock, flags); | |
23579a2a BZ |
551 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, |
552 | hwif->io_ports[IDE_COMMAND_OFFSET]); | |
1da177e4 LT |
553 | ndelay(400); |
554 | spin_unlock_irqrestore(&ide_lock, flags); | |
555 | ||
556 | return (*handler) (drive); | |
557 | } | |
558 | } | |
559 | ||
560 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. | |
561 | The device registers must have already been prepared | |
562 | by cdrom_start_packet_command. | |
563 | HANDLER is the interrupt handler to call when the command completes | |
564 | or there's data ready. */ | |
1da177e4 | 565 | #define ATAPI_MIN_CDB_BYTES 12 |
9ce70fb2 | 566 | static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive, |
1da177e4 LT |
567 | struct request *rq, |
568 | ide_handler_t *handler) | |
569 | { | |
570 | ide_hwif_t *hwif = drive->hwif; | |
571 | int cmd_len; | |
572 | struct cdrom_info *info = drive->driver_data; | |
573 | ide_startstop_t startstop; | |
574 | ||
2bc4cf2d | 575 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
576 | /* Here we should have been called after receiving an interrupt |
577 | from the device. DRQ should how be set. */ | |
578 | ||
579 | /* Check for errors. */ | |
580 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) | |
581 | return ide_stopped; | |
f0dd8712 AL |
582 | |
583 | /* Ok, next interrupt will be DMA interrupt. */ | |
584 | if (info->dma) | |
585 | drive->waiting_for_dma = 1; | |
1da177e4 LT |
586 | } else { |
587 | /* Otherwise, we must wait for DRQ to get set. */ | |
588 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, | |
589 | BUSY_STAT, WAIT_READY)) | |
590 | return startstop; | |
591 | } | |
592 | ||
593 | /* Arm the interrupt handler. */ | |
594 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); | |
595 | ||
596 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
597 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
598 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
599 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
600 | ||
601 | /* Send the command to the device. */ | |
602 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); | |
603 | ||
604 | /* Start the DMA if need be */ | |
605 | if (info->dma) | |
606 | hwif->dma_start(drive); | |
607 | ||
608 | return ide_started; | |
609 | } | |
610 | ||
611 | /**************************************************************************** | |
612 | * Block read functions. | |
613 | */ | |
614 | ||
5a5222d9 BZ |
615 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
616 | { | |
617 | while (len > 0) { | |
618 | int dum = 0; | |
619 | xf(drive, &dum, sizeof(dum)); | |
620 | len -= sizeof(dum); | |
621 | } | |
622 | } | |
623 | ||
b4ab726c BZ |
624 | static void ide_cd_drain_data(ide_drive_t *drive, int nsects) |
625 | { | |
626 | while (nsects > 0) { | |
627 | static char dum[SECTOR_SIZE]; | |
628 | ||
629 | drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum)); | |
630 | nsects--; | |
631 | } | |
632 | } | |
633 | ||
1da177e4 LT |
634 | /* |
635 | * Check the contents of the interrupt reason register from the cdrom | |
636 | * and attempt to recover if there are problems. Returns 0 if everything's | |
637 | * ok; nonzero if the request has been terminated. | |
638 | */ | |
9f10d9ee BZ |
639 | static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, |
640 | int len, int ireason, int rw) | |
1da177e4 | 641 | { |
0d6f7e3a BZ |
642 | /* |
643 | * ireason == 0: the drive wants to receive data from us | |
644 | * ireason == 2: the drive is expecting to transfer data to us | |
645 | */ | |
646 | if (ireason == (!rw << 1)) | |
1da177e4 | 647 | return 0; |
0d6f7e3a | 648 | else if (ireason == (rw << 1)) { |
5a5222d9 | 649 | ide_hwif_t *hwif = drive->hwif; |
0d6f7e3a | 650 | xfer_func_t *xf; |
5a5222d9 | 651 | |
0d6f7e3a | 652 | /* Whoops... */ |
35379c07 | 653 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
177773ed | 654 | drive->name, __func__); |
1da177e4 | 655 | |
0d6f7e3a BZ |
656 | xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes; |
657 | ide_cd_pad_transfer(drive, xf, len); | |
658 | } else if (rw == 0 && ireason == 1) { | |
1da177e4 LT |
659 | /* Some drives (ASUS) seem to tell us that status |
660 | * info is available. just get it and ignore. | |
661 | */ | |
c47137a9 | 662 | (void)ide_read_status(drive); |
1da177e4 LT |
663 | return 0; |
664 | } else { | |
665 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 | 666 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
177773ed | 667 | drive->name, __func__, ireason); |
1da177e4 LT |
668 | } |
669 | ||
9f10d9ee BZ |
670 | if (rq->cmd_type == REQ_TYPE_ATA_PC) |
671 | rq->cmd_flags |= REQ_FAILED; | |
672 | ||
1da177e4 LT |
673 | cdrom_end_request(drive, 0); |
674 | return -1; | |
675 | } | |
676 | ||
64814f23 BZ |
677 | /* |
678 | * Assume that the drive will always provide data in multiples of at least | |
679 | * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. | |
680 | */ | |
681 | static int ide_cd_check_transfer_size(ide_drive_t *drive, int len) | |
682 | { | |
683 | struct cdrom_info *cd = drive->driver_data; | |
684 | ||
685 | if ((len % SECTOR_SIZE) == 0) | |
686 | return 0; | |
687 | ||
688 | printk(KERN_ERR "%s: %s: Bad transfer size %d\n", | |
177773ed | 689 | drive->name, __func__, len); |
64814f23 BZ |
690 | |
691 | if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) | |
692 | printk(KERN_ERR " This drive is not supported by " | |
693 | "this version of the driver\n"); | |
694 | else { | |
695 | printk(KERN_ERR " Trying to limit transfer sizes\n"); | |
696 | cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; | |
697 | } | |
698 | ||
699 | return 1; | |
700 | } | |
701 | ||
0041e7c6 | 702 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); |
94f5a86d | 703 | |
1da177e4 | 704 | /* |
29f3aaca BZ |
705 | * Routine to send a read/write packet command to the drive. |
706 | * This is usually called directly from cdrom_start_{read,write}(). | |
1da177e4 LT |
707 | * However, for drq_interrupt devices, it is called from an interrupt |
708 | * when the drive is ready to accept the command. | |
709 | */ | |
29f3aaca | 710 | static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive) |
1da177e4 LT |
711 | { |
712 | struct request *rq = HWGROUP(drive)->rq; | |
1da177e4 | 713 | |
29f3aaca BZ |
714 | if (rq_data_dir(rq) == READ) { |
715 | unsigned short sectors_per_frame = | |
716 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
717 | int nskip = rq->sector & (sectors_per_frame - 1); | |
1da177e4 | 718 | |
29f3aaca BZ |
719 | /* |
720 | * If the requested sector doesn't start on a frame boundary, | |
721 | * we must adjust the start of the transfer so that it does, | |
722 | * and remember to skip the first few sectors. | |
723 | * | |
724 | * If the rq->current_nr_sectors field is larger than the size | |
725 | * of the buffer, it will mean that we're to skip a number of | |
726 | * sectors equal to the amount by which rq->current_nr_sectors | |
727 | * is larger than the buffer size. | |
728 | */ | |
729 | if (nskip > 0) { | |
730 | /* Sanity check... */ | |
731 | if (rq->current_nr_sectors != | |
732 | bio_cur_sectors(rq->bio)) { | |
733 | printk(KERN_ERR "%s: %s: buffer botch (%u)\n", | |
177773ed | 734 | drive->name, __func__, |
29f3aaca BZ |
735 | rq->current_nr_sectors); |
736 | cdrom_end_request(drive, 0); | |
737 | return ide_stopped; | |
738 | } | |
739 | rq->current_nr_sectors += nskip; | |
1da177e4 | 740 | } |
1da177e4 | 741 | } |
29f3aaca BZ |
742 | #if 0 |
743 | else | |
744 | /* the immediate bit */ | |
745 | rq->cmd[1] = 1 << 3; | |
746 | #endif | |
1da177e4 LT |
747 | /* Set up the command */ |
748 | rq->timeout = ATAPI_WAIT_PC; | |
749 | ||
750 | /* Send the command to the drive and return. */ | |
0041e7c6 | 751 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
1da177e4 LT |
752 | } |
753 | ||
1da177e4 LT |
754 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
755 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ | |
756 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ | |
757 | ||
9ce70fb2 | 758 | static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive) |
1da177e4 LT |
759 | { |
760 | struct cdrom_info *info = drive->driver_data; | |
761 | int stat; | |
762 | static int retry = 10; | |
763 | ||
764 | if (cdrom_decode_status(drive, 0, &stat)) | |
765 | return ide_stopped; | |
4fe67178 | 766 | |
2bc4cf2d | 767 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
768 | |
769 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { | |
770 | if (--retry == 0) { | |
771 | /* | |
772 | * this condition is far too common, to bother | |
773 | * users about it | |
774 | */ | |
9ce70fb2 | 775 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ |
1da177e4 LT |
776 | drive->dsc_overlap = 0; |
777 | } | |
778 | } | |
779 | return ide_stopped; | |
780 | } | |
781 | ||
9ce70fb2 | 782 | static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive) |
1da177e4 LT |
783 | { |
784 | struct request *rq = HWGROUP(drive)->rq; | |
785 | sector_t frame = rq->sector; | |
786 | ||
787 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); | |
788 | ||
789 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
790 | rq->cmd[0] = GPCMD_SEEK; | |
791 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); | |
792 | ||
793 | rq->timeout = ATAPI_WAIT_PC; | |
794 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); | |
795 | } | |
796 | ||
9ce70fb2 | 797 | static ide_startstop_t cdrom_start_seek(ide_drive_t *drive, unsigned int block) |
1da177e4 LT |
798 | { |
799 | struct cdrom_info *info = drive->driver_data; | |
800 | ||
801 | info->dma = 0; | |
1da177e4 LT |
802 | info->start_seek = jiffies; |
803 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); | |
804 | } | |
805 | ||
9ce70fb2 PC |
806 | /* |
807 | * Fix up a possibly partially-processed request so that we can | |
808 | * start it over entirely, or even put it back on the request queue. | |
809 | */ | |
810 | static void restore_request(struct request *rq) | |
1da177e4 LT |
811 | { |
812 | if (rq->buffer != bio_data(rq->bio)) { | |
813 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; | |
814 | ||
815 | rq->buffer = bio_data(rq->bio); | |
816 | rq->nr_sectors += n; | |
817 | rq->sector -= n; | |
818 | } | |
819 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); | |
820 | rq->hard_nr_sectors = rq->nr_sectors; | |
821 | rq->hard_sector = rq->sector; | |
822 | rq->q->prep_rq_fn(rq->q, rq); | |
823 | } | |
824 | ||
1da177e4 LT |
825 | /**************************************************************************** |
826 | * Execute all other packet commands. | |
827 | */ | |
828 | ||
8ee69f5a BZ |
829 | static void ide_cd_request_sense_fixup(struct request *rq) |
830 | { | |
831 | /* | |
832 | * Some of the trailing request sense fields are optional, | |
833 | * and some drives don't send them. Sigh. | |
834 | */ | |
835 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
836 | rq->data_len > 0 && rq->data_len <= 5) | |
837 | while (rq->data_len > 0) { | |
838 | *(u8 *)rq->data++ = 0; | |
839 | --rq->data_len; | |
840 | } | |
841 | } | |
842 | ||
17802998 | 843 | int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
844 | { |
845 | struct request_sense sense; | |
846 | int retries = 10; | |
4aff5e23 | 847 | unsigned int flags = rq->cmd_flags; |
1da177e4 LT |
848 | |
849 | if (rq->sense == NULL) | |
850 | rq->sense = &sense; | |
851 | ||
852 | /* Start of retry loop. */ | |
853 | do { | |
854 | int error; | |
855 | unsigned long time = jiffies; | |
4aff5e23 | 856 | rq->cmd_flags = flags; |
1da177e4 LT |
857 | |
858 | error = ide_do_drive_cmd(drive, rq, ide_wait); | |
859 | time = jiffies - time; | |
860 | ||
9ce70fb2 | 861 | /* FIXME: we should probably abort/retry or something |
1da177e4 | 862 | * in case of failure */ |
4aff5e23 | 863 | if (rq->cmd_flags & REQ_FAILED) { |
1da177e4 LT |
864 | /* The request failed. Retry if it was due to a unit |
865 | attention status | |
866 | (usually means media was changed). */ | |
867 | struct request_sense *reqbuf = rq->sense; | |
868 | ||
869 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
870 | cdrom_saw_media_change(drive); | |
871 | else if (reqbuf->sense_key == NOT_READY && | |
872 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
873 | /* The drive is in the process of loading | |
874 | a disk. Retry, but wait a little to give | |
875 | the drive time to complete the load. */ | |
876 | ssleep(2); | |
877 | } else { | |
878 | /* Otherwise, don't retry. */ | |
879 | retries = 0; | |
880 | } | |
881 | --retries; | |
882 | } | |
883 | ||
884 | /* End of retry loop. */ | |
4aff5e23 | 885 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
1da177e4 LT |
886 | |
887 | /* Return an error if the command failed. */ | |
4aff5e23 | 888 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
889 | } |
890 | ||
aaa04c28 KU |
891 | /* |
892 | * Called from blk_end_request_callback() after the data of the request | |
893 | * is completed and before the request is completed. | |
894 | * By returning value '1', blk_end_request_callback() returns immediately | |
895 | * without completing the request. | |
896 | */ | |
897 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) | |
898 | { | |
899 | return 1; | |
900 | } | |
901 | ||
1da177e4 LT |
902 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
903 | { | |
23579a2a | 904 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
905 | struct cdrom_info *info = drive->driver_data; |
906 | struct request *rq = HWGROUP(drive)->rq; | |
1da177e4 | 907 | xfer_func_t *xferfunc; |
0041e7c6 | 908 | ide_expiry_t *expiry = NULL; |
ff1bfbc1 BZ |
909 | int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0; |
910 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; | |
911 | unsigned int timeout; | |
912 | u8 lowcyl, highcyl; | |
1da177e4 LT |
913 | |
914 | /* Check for errors. */ | |
1da177e4 LT |
915 | dma = info->dma; |
916 | if (dma) { | |
917 | info->dma = 0; | |
918 | dma_error = HWIF(drive)->ide_dma_end(drive); | |
eba15fba BZ |
919 | if (dma_error) { |
920 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
ff1bfbc1 | 921 | write ? "write" : "read"); |
eba15fba BZ |
922 | ide_dma_off(drive); |
923 | } | |
1da177e4 LT |
924 | } |
925 | ||
926 | if (cdrom_decode_status(drive, 0, &stat)) | |
927 | return ide_stopped; | |
928 | ||
929 | /* | |
930 | * using dma, transfer is complete now | |
931 | */ | |
932 | if (dma) { | |
eba15fba | 933 | if (dma_error) |
1da177e4 | 934 | return ide_error(drive, "dma error", stat); |
0041e7c6 BZ |
935 | if (blk_fs_request(rq)) { |
936 | ide_end_request(drive, 1, rq->nr_sectors); | |
937 | return ide_stopped; | |
938 | } | |
ff1bfbc1 | 939 | goto end_request; |
1da177e4 LT |
940 | } |
941 | ||
942 | /* | |
943 | * ok we fall to pio :/ | |
944 | */ | |
23579a2a BZ |
945 | ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]) & 0x3; |
946 | lowcyl = hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]); | |
947 | highcyl = hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]); | |
1da177e4 LT |
948 | |
949 | len = lowcyl + (256 * highcyl); | |
0041e7c6 BZ |
950 | |
951 | thislen = blk_fs_request(rq) ? len : rq->data_len; | |
1da177e4 LT |
952 | if (thislen > len) |
953 | thislen = len; | |
954 | ||
955 | /* | |
956 | * If DRQ is clear, the command has completed. | |
957 | */ | |
aaa04c28 | 958 | if ((stat & DRQ_STAT) == 0) { |
0041e7c6 BZ |
959 | if (blk_fs_request(rq)) { |
960 | /* | |
961 | * If we're not done reading/writing, complain. | |
962 | * Otherwise, complete the command normally. | |
963 | */ | |
964 | uptodate = 1; | |
965 | if (rq->current_nr_sectors > 0) { | |
966 | printk(KERN_ERR "%s: %s: data underrun " | |
967 | "(%d blocks)\n", | |
177773ed | 968 | drive->name, __func__, |
0041e7c6 BZ |
969 | rq->current_nr_sectors); |
970 | if (!write) | |
971 | rq->cmd_flags |= REQ_FAILED; | |
972 | uptodate = 0; | |
973 | } | |
974 | cdrom_end_request(drive, uptodate); | |
975 | return ide_stopped; | |
976 | } else if (!blk_pc_request(rq)) { | |
ff1bfbc1 BZ |
977 | ide_cd_request_sense_fixup(rq); |
978 | /* Complain if we still have data left to transfer. */ | |
979 | uptodate = rq->data_len ? 0 : 1; | |
980 | } | |
981 | goto end_request; | |
aaa04c28 | 982 | } |
1da177e4 LT |
983 | |
984 | /* | |
985 | * check which way to transfer data | |
986 | */ | |
9f10d9ee BZ |
987 | if (ide_cd_check_ireason(drive, rq, len, ireason, write)) |
988 | return ide_stopped; | |
0041e7c6 | 989 | |
9f10d9ee BZ |
990 | if (blk_fs_request(rq)) { |
991 | if (write == 0) { | |
0041e7c6 BZ |
992 | int nskip; |
993 | ||
994 | if (ide_cd_check_transfer_size(drive, len)) { | |
995 | cdrom_end_request(drive, 0); | |
996 | return ide_stopped; | |
997 | } | |
998 | ||
999 | /* | |
1000 | * First, figure out if we need to bit-bucket | |
1001 | * any of the leading sectors. | |
1002 | */ | |
1003 | nskip = min_t(int, rq->current_nr_sectors | |
1004 | - bio_cur_sectors(rq->bio), | |
1005 | thislen >> 9); | |
1006 | if (nskip > 0) { | |
1007 | ide_cd_drain_data(drive, nskip); | |
1008 | rq->current_nr_sectors -= nskip; | |
1009 | thislen -= (nskip << 9); | |
1010 | } | |
1011 | } | |
ff1bfbc1 | 1012 | } |
1da177e4 | 1013 | |
ff1bfbc1 BZ |
1014 | if (ireason == 0) { |
1015 | write = 1; | |
1016 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
9f10d9ee | 1017 | } else { |
ff1bfbc1 | 1018 | write = 0; |
1da177e4 LT |
1019 | xferfunc = HWIF(drive)->atapi_input_bytes; |
1020 | } | |
1021 | ||
1022 | /* | |
1023 | * transfer data | |
1024 | */ | |
1025 | while (thislen > 0) { | |
0041e7c6 | 1026 | u8 *ptr = blk_fs_request(rq) ? NULL : rq->data; |
a11e77db | 1027 | int blen = rq->data_len; |
1da177e4 LT |
1028 | |
1029 | /* | |
1030 | * bio backed? | |
1031 | */ | |
1032 | if (rq->bio) { | |
0041e7c6 BZ |
1033 | if (blk_fs_request(rq)) { |
1034 | ptr = rq->buffer; | |
1035 | blen = rq->current_nr_sectors << 9; | |
1036 | } else { | |
1037 | ptr = bio_data(rq->bio); | |
1038 | blen = bio_iovec(rq->bio)->bv_len; | |
1039 | } | |
1da177e4 LT |
1040 | } |
1041 | ||
1042 | if (!ptr) { | |
0041e7c6 BZ |
1043 | if (blk_fs_request(rq) && !write) |
1044 | /* | |
968c4964 BP |
1045 | * If the buffers are full, pipe the rest into |
1046 | * oblivion. */ | |
1047 | ide_cd_drain_data(drive, thislen >> 9); | |
0041e7c6 BZ |
1048 | else { |
1049 | printk(KERN_ERR "%s: confused, missing data\n", | |
1050 | drive->name); | |
1051 | blk_dump_rq_flags(rq, rq_data_dir(rq) | |
1052 | ? "cdrom_newpc_intr, write" | |
1053 | : "cdrom_newpc_intr, read"); | |
1054 | } | |
1da177e4 LT |
1055 | break; |
1056 | } | |
1057 | ||
1058 | if (blen > thislen) | |
1059 | blen = thislen; | |
1060 | ||
1061 | xferfunc(drive, ptr, blen); | |
1062 | ||
1063 | thislen -= blen; | |
1064 | len -= blen; | |
1da177e4 | 1065 | |
0041e7c6 BZ |
1066 | if (blk_fs_request(rq)) { |
1067 | rq->buffer += blen; | |
1068 | rq->nr_sectors -= (blen >> 9); | |
1069 | rq->current_nr_sectors -= (blen >> 9); | |
1070 | rq->sector += (blen >> 9); | |
1071 | ||
1072 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1073 | cdrom_end_request(drive, 1); | |
1074 | } else { | |
1075 | rq->data_len -= blen; | |
1076 | ||
aaa04c28 KU |
1077 | /* |
1078 | * The request can't be completed until DRQ is cleared. | |
1079 | * So complete the data, but don't complete the request | |
1080 | * using the dummy function for the callback feature | |
1081 | * of blk_end_request_callback(). | |
1082 | */ | |
0041e7c6 BZ |
1083 | if (rq->bio) |
1084 | blk_end_request_callback(rq, 0, blen, | |
aaa04c28 | 1085 | cdrom_newpc_intr_dummy_cb); |
0041e7c6 BZ |
1086 | else |
1087 | rq->data += blen; | |
1088 | } | |
bcd88ac3 AS |
1089 | if (!write && blk_sense_request(rq)) |
1090 | rq->sense_len += blen; | |
1da177e4 LT |
1091 | } |
1092 | ||
1093 | /* | |
1094 | * pad, if necessary | |
1095 | */ | |
0041e7c6 | 1096 | if (!blk_fs_request(rq) && len > 0) |
5a5222d9 | 1097 | ide_cd_pad_transfer(drive, xferfunc, len); |
1da177e4 | 1098 | |
ff1bfbc1 BZ |
1099 | if (blk_pc_request(rq)) { |
1100 | timeout = rq->timeout; | |
ff1bfbc1 BZ |
1101 | } else { |
1102 | timeout = ATAPI_WAIT_PC; | |
0041e7c6 BZ |
1103 | if (!blk_fs_request(rq)) |
1104 | expiry = cdrom_timer_expiry; | |
ff1bfbc1 BZ |
1105 | } |
1106 | ||
1107 | ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); | |
1da177e4 | 1108 | return ide_started; |
ff1bfbc1 BZ |
1109 | |
1110 | end_request: | |
1111 | if (blk_pc_request(rq)) { | |
1112 | unsigned long flags; | |
14e04c3f KU |
1113 | unsigned int dlen = rq->data_len; |
1114 | ||
1115 | if (dma) | |
1116 | rq->data_len = 0; | |
ff1bfbc1 BZ |
1117 | |
1118 | spin_lock_irqsave(&ide_lock, flags); | |
14e04c3f | 1119 | if (__blk_end_request(rq, 0, dlen)) |
ff1bfbc1 BZ |
1120 | BUG(); |
1121 | HWGROUP(drive)->rq = NULL; | |
1122 | spin_unlock_irqrestore(&ide_lock, flags); | |
1123 | } else { | |
1124 | if (!uptodate) | |
1125 | rq->cmd_flags |= REQ_FAILED; | |
1126 | cdrom_end_request(drive, uptodate); | |
1127 | } | |
1128 | return ide_stopped; | |
1da177e4 LT |
1129 | } |
1130 | ||
21ea1f0f | 1131 | static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) |
1da177e4 | 1132 | { |
21ea1f0f BZ |
1133 | struct cdrom_info *cd = drive->driver_data; |
1134 | int write = rq_data_dir(rq) == WRITE; | |
1135 | unsigned short sectors_per_frame = | |
1136 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1da177e4 | 1137 | |
21ea1f0f BZ |
1138 | if (write) { |
1139 | /* | |
1140 | * disk has become write protected | |
1141 | */ | |
1142 | if (cd->disk->policy) { | |
1143 | cdrom_end_request(drive, 0); | |
1144 | return ide_stopped; | |
1145 | } | |
1146 | } else { | |
1147 | /* | |
1148 | * We may be retrying this request after an error. Fix up any | |
1149 | * weirdness which might be present in the request packet. | |
1150 | */ | |
1151 | restore_request(rq); | |
1da177e4 LT |
1152 | } |
1153 | ||
1154 | /* | |
21ea1f0f | 1155 | * use DMA, if possible / writes *must* be hardware frame aligned |
1da177e4 | 1156 | */ |
21ea1f0f BZ |
1157 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
1158 | (rq->sector & (sectors_per_frame - 1))) { | |
1159 | if (write) { | |
1160 | cdrom_end_request(drive, 0); | |
1161 | return ide_stopped; | |
1162 | } | |
1163 | cd->dma = 0; | |
1164 | } else | |
1165 | cd->dma = drive->using_dma; | |
1da177e4 | 1166 | |
21ea1f0f BZ |
1167 | if (write) |
1168 | cd->devinfo.media_written = 1; | |
1da177e4 | 1169 | |
21ea1f0f | 1170 | /* Start sending the read/write request to the drive. */ |
29f3aaca | 1171 | return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont); |
1da177e4 LT |
1172 | } |
1173 | ||
1174 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1175 | { | |
1176 | struct request *rq = HWGROUP(drive)->rq; | |
1177 | ||
1178 | if (!rq->timeout) | |
1179 | rq->timeout = ATAPI_WAIT_PC; | |
1180 | ||
1181 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); | |
1182 | } | |
1183 | ||
1184 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) | |
1185 | { | |
1186 | struct cdrom_info *info = drive->driver_data; | |
1187 | ||
c9f56a80 BZ |
1188 | if (blk_pc_request(rq)) |
1189 | rq->cmd_flags |= REQ_QUIET; | |
1190 | else | |
1191 | rq->cmd_flags &= ~REQ_FAILED; | |
1da177e4 LT |
1192 | |
1193 | info->dma = 0; | |
1da177e4 LT |
1194 | |
1195 | /* | |
1196 | * sg request | |
1197 | */ | |
1198 | if (rq->bio) { | |
1199 | int mask = drive->queue->dma_alignment; | |
1200 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); | |
1201 | ||
1da177e4 LT |
1202 | info->dma = drive->using_dma; |
1203 | ||
1204 | /* | |
1205 | * check if dma is safe | |
5d9e4ea5 LT |
1206 | * |
1207 | * NOTE! The "len" and "addr" checks should possibly have | |
1208 | * separate masks. | |
1da177e4 | 1209 | */ |
4e7c6816 | 1210 | if ((rq->data_len & 15) || (addr & mask)) |
1da177e4 LT |
1211 | info->dma = 0; |
1212 | } | |
1213 | ||
1214 | /* Start sending the command to the drive. */ | |
1215 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); | |
1216 | } | |
1217 | ||
1218 | /**************************************************************************** | |
1219 | * cdrom driver request routine. | |
1220 | */ | |
1221 | static ide_startstop_t | |
9ce70fb2 | 1222 | ide_do_rw_cdrom(ide_drive_t *drive, struct request *rq, sector_t block) |
1da177e4 LT |
1223 | { |
1224 | ide_startstop_t action; | |
1225 | struct cdrom_info *info = drive->driver_data; | |
1226 | ||
1227 | if (blk_fs_request(rq)) { | |
2bc4cf2d | 1228 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
1da177e4 | 1229 | unsigned long elapsed = jiffies - info->start_seek; |
c47137a9 | 1230 | int stat = ide_read_status(drive); |
1da177e4 LT |
1231 | |
1232 | if ((stat & SEEK_STAT) != SEEK_STAT) { | |
1233 | if (elapsed < IDECD_SEEK_TIMEOUT) { | |
1234 | ide_stall_queue(drive, IDECD_SEEK_TIMER); | |
1235 | return ide_stopped; | |
1236 | } | |
9ce70fb2 | 1237 | printk(KERN_ERR "%s: DSC timeout\n", drive->name); |
1da177e4 | 1238 | } |
2bc4cf2d | 1239 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
1da177e4 | 1240 | } |
9ce70fb2 | 1241 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) |
1da177e4 | 1242 | action = cdrom_start_seek(drive, block); |
9ce70fb2 | 1243 | else |
21ea1f0f | 1244 | action = cdrom_start_rw(drive, rq); |
1da177e4 LT |
1245 | info->last_block = block; |
1246 | return action; | |
c9f56a80 | 1247 | } else if (blk_sense_request(rq) || blk_pc_request(rq) || |
cea2885a | 1248 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 1249 | return cdrom_do_block_pc(drive, rq); |
4aff5e23 | 1250 | } else if (blk_special_request(rq)) { |
1da177e4 LT |
1251 | /* |
1252 | * right now this can only be a reset... | |
1253 | */ | |
1254 | cdrom_end_request(drive, 1); | |
1255 | return ide_stopped; | |
1256 | } | |
1257 | ||
1258 | blk_dump_rq_flags(rq, "ide-cd bad flags"); | |
1259 | cdrom_end_request(drive, 0); | |
1260 | return ide_stopped; | |
1261 | } | |
1262 | ||
1263 | ||
1264 | ||
1265 | /**************************************************************************** | |
1266 | * Ioctl handling. | |
1267 | * | |
1268 | * Routines which queue packet commands take as a final argument a pointer | |
1269 | * to a request_sense struct. If execution of the command results | |
1270 | * in an error with a CHECK CONDITION status, this structure will be filled | |
1271 | * with the results of the subsequent request sense command. The pointer | |
1272 | * can also be NULL, in which case no sense information is returned. | |
1273 | */ | |
1274 | ||
1da177e4 | 1275 | static |
9ce70fb2 | 1276 | void msf_from_bcd(struct atapi_msf *msf) |
1da177e4 | 1277 | { |
9a6dc668 BZ |
1278 | msf->minute = BCD2BIN(msf->minute); |
1279 | msf->second = BCD2BIN(msf->second); | |
1280 | msf->frame = BCD2BIN(msf->frame); | |
1da177e4 LT |
1281 | } |
1282 | ||
f9afd18b | 1283 | int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 LT |
1284 | { |
1285 | struct request req; | |
1286 | struct cdrom_info *info = drive->driver_data; | |
1287 | struct cdrom_device_info *cdi = &info->devinfo; | |
1288 | ||
139c829d | 1289 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1290 | |
1291 | req.sense = sense; | |
1292 | req.cmd[0] = GPCMD_TEST_UNIT_READY; | |
4aff5e23 | 1293 | req.cmd_flags |= REQ_QUIET; |
1da177e4 | 1294 | |
cdf6000d BZ |
1295 | /* |
1296 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to | |
1297 | * switch CDs instead of supporting the LOAD_UNLOAD opcode. | |
1298 | */ | |
1da177e4 | 1299 | req.cmd[7] = cdi->sanyo_slot % 3; |
1da177e4 | 1300 | |
139c829d | 1301 | return ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1302 | } |
1303 | ||
1da177e4 LT |
1304 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
1305 | unsigned long *sectors_per_frame, | |
1306 | struct request_sense *sense) | |
1307 | { | |
1308 | struct { | |
1309 | __u32 lba; | |
1310 | __u32 blocklen; | |
1311 | } capbuf; | |
1312 | ||
1313 | int stat; | |
1314 | struct request req; | |
1315 | ||
139c829d | 1316 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1317 | |
1318 | req.sense = sense; | |
1319 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
1320 | req.data = (char *)&capbuf; | |
1321 | req.data_len = sizeof(capbuf); | |
4aff5e23 | 1322 | req.cmd_flags |= REQ_QUIET; |
1da177e4 | 1323 | |
139c829d | 1324 | stat = ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1325 | if (stat == 0) { |
1326 | *capacity = 1 + be32_to_cpu(capbuf.lba); | |
1327 | *sectors_per_frame = | |
1328 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; | |
1329 | } | |
1330 | ||
1331 | return stat; | |
1332 | } | |
1333 | ||
1334 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
1335 | int format, char *buf, int buflen, | |
1336 | struct request_sense *sense) | |
1337 | { | |
1338 | struct request req; | |
1339 | ||
139c829d | 1340 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1341 | |
1342 | req.sense = sense; | |
1343 | req.data = buf; | |
1344 | req.data_len = buflen; | |
4aff5e23 | 1345 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1346 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
1347 | req.cmd[6] = trackno; | |
1348 | req.cmd[7] = (buflen >> 8); | |
1349 | req.cmd[8] = (buflen & 0xff); | |
1350 | req.cmd[9] = (format << 6); | |
1351 | ||
1352 | if (msf_flag) | |
1353 | req.cmd[1] = 2; | |
1354 | ||
139c829d | 1355 | return ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1356 | } |
1357 | ||
1da177e4 | 1358 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
17802998 | 1359 | int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 LT |
1360 | { |
1361 | int stat, ntracks, i; | |
1362 | struct cdrom_info *info = drive->driver_data; | |
1363 | struct cdrom_device_info *cdi = &info->devinfo; | |
1364 | struct atapi_toc *toc = info->toc; | |
1365 | struct { | |
1366 | struct atapi_toc_header hdr; | |
1367 | struct atapi_toc_entry ent; | |
1368 | } ms_tmp; | |
1369 | long last_written; | |
1370 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
1371 | ||
1372 | if (toc == NULL) { | |
1373 | /* Try to allocate space. */ | |
2a91f3e5 | 1374 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 | 1375 | if (toc == NULL) { |
9ce70fb2 | 1376 | printk(KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); |
1da177e4 LT |
1377 | return -ENOMEM; |
1378 | } | |
2a91f3e5 | 1379 | info->toc = toc; |
1da177e4 LT |
1380 | } |
1381 | ||
1382 | /* Check to see if the existing data is still valid. | |
1383 | If it is, just return. */ | |
1384 | (void) cdrom_check_status(drive, sense); | |
1385 | ||
2bc4cf2d | 1386 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
1da177e4 LT |
1387 | return 0; |
1388 | ||
1389 | /* Try to get the total cdrom capacity and sector size. */ | |
1390 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, | |
1391 | sense); | |
1392 | if (stat) | |
1393 | toc->capacity = 0x1fffff; | |
1394 | ||
1395 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af AC |
1396 | /* Save a private copy of te TOC capacity for error handling */ |
1397 | drive->probed_capacity = toc->capacity * sectors_per_frame; | |
1398 | ||
1da177e4 LT |
1399 | blk_queue_hardsect_size(drive->queue, |
1400 | sectors_per_frame << SECTOR_BITS); | |
1401 | ||
1402 | /* First read just the header, so we know how long the TOC is. */ | |
1403 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, | |
1404 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
1405 | if (stat) |
1406 | return stat; | |
1da177e4 | 1407 | |
2bc4cf2d | 1408 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1409 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1410 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1411 | } |
1da177e4 LT |
1412 | |
1413 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
1414 | if (ntracks <= 0) | |
1415 | return -EIO; | |
1416 | if (ntracks > MAX_TRACKS) | |
1417 | ntracks = MAX_TRACKS; | |
1418 | ||
1419 | /* Now read the whole schmeer. */ | |
1420 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, | |
1421 | (char *)&toc->hdr, | |
1422 | sizeof(struct atapi_toc_header) + | |
1423 | (ntracks + 1) * | |
1424 | sizeof(struct atapi_toc_entry), sense); | |
1425 | ||
1426 | if (stat && toc->hdr.first_track > 1) { | |
1427 | /* Cds with CDI tracks only don't have any TOC entries, | |
1428 | despite of this the returned values are | |
1429 | first_track == last_track = number of CDI tracks + 1, | |
1430 | so that this case is indistinguishable from the same | |
1431 | layout plus an additional audio track. | |
1432 | If we get an error for the regular case, we assume | |
1433 | a CDI without additional audio tracks. In this case | |
1434 | the readable TOC is empty (CDI tracks are not included) | |
96de0e25 | 1435 | and only holds the Leadout entry. Heiko Eißfeldt */ |
1da177e4 LT |
1436 | ntracks = 0; |
1437 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
1438 | (char *)&toc->hdr, | |
1439 | sizeof(struct atapi_toc_header) + | |
1440 | (ntracks + 1) * | |
1441 | sizeof(struct atapi_toc_entry), | |
1442 | sense); | |
cdf6000d | 1443 | if (stat) |
1da177e4 | 1444 | return stat; |
cdf6000d | 1445 | |
2bc4cf2d | 1446 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1447 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
1448 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); | |
cdf6000d | 1449 | } else { |
1da177e4 LT |
1450 | toc->hdr.first_track = CDROM_LEADOUT; |
1451 | toc->hdr.last_track = CDROM_LEADOUT; | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | if (stat) | |
1456 | return stat; | |
1457 | ||
7eb43fd2 | 1458 | toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length); |
1da177e4 | 1459 | |
2bc4cf2d | 1460 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1461 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1462 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1463 | } |
1da177e4 | 1464 | |
cdf6000d | 1465 | for (i = 0; i <= ntracks; i++) { |
2bc4cf2d BZ |
1466 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1467 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) | |
9a6dc668 | 1468 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
1da177e4 LT |
1469 | msf_from_bcd(&toc->ent[i].addr.msf); |
1470 | } | |
9ce70fb2 PC |
1471 | toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute, |
1472 | toc->ent[i].addr.msf.second, | |
1473 | toc->ent[i].addr.msf.frame); | |
1da177e4 LT |
1474 | } |
1475 | ||
1476 | /* Read the multisession information. */ | |
1477 | if (toc->hdr.first_track != CDROM_LEADOUT) { | |
1478 | /* Read the multisession information. */ | |
1479 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, | |
1480 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
1481 | if (stat) |
1482 | return stat; | |
1da177e4 LT |
1483 | |
1484 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
1485 | } else { | |
1486 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; | |
1487 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ | |
1488 | } | |
1489 | ||
2bc4cf2d | 1490 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1da177e4 LT |
1491 | /* Re-read multisession information using MSF format */ |
1492 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, | |
1493 | sizeof(ms_tmp), sense); | |
1494 | if (stat) | |
1495 | return stat; | |
1496 | ||
9ce70fb2 | 1497 | msf_from_bcd(&ms_tmp.ent.addr.msf); |
1da177e4 | 1498 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
9ce70fb2 | 1499 | ms_tmp.ent.addr.msf.second, |
1da177e4 LT |
1500 | ms_tmp.ent.addr.msf.frame); |
1501 | } | |
1da177e4 LT |
1502 | |
1503 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
1504 | ||
1505 | /* Now try to get the total cdrom capacity. */ | |
1506 | stat = cdrom_get_last_written(cdi, &last_written); | |
1507 | if (!stat && (last_written > toc->capacity)) { | |
1508 | toc->capacity = last_written; | |
1509 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 1510 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
1511 | } |
1512 | ||
1513 | /* Remember that we've read this stuff. */ | |
2bc4cf2d | 1514 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
1da177e4 LT |
1515 | |
1516 | return 0; | |
1517 | } | |
1518 | ||
17802998 | 1519 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
9235e68b EP |
1520 | { |
1521 | struct cdrom_info *info = drive->driver_data; | |
1522 | struct cdrom_device_info *cdi = &info->devinfo; | |
1523 | struct packet_command cgc; | |
455d80a9 | 1524 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
9235e68b | 1525 | |
e59724c7 | 1526 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
455d80a9 | 1527 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
9235e68b | 1528 | |
455d80a9 | 1529 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
9235e68b EP |
1530 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
1531 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); | |
1532 | if (!stat) | |
1533 | break; | |
1534 | } while (--attempts); | |
1535 | return stat; | |
1536 | } | |
1537 | ||
17802998 | 1538 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
9235e68b | 1539 | { |
4fe67178 | 1540 | struct cdrom_info *cd = drive->driver_data; |
481c8c64 BZ |
1541 | u16 curspeed, maxspeed; |
1542 | ||
455d80a9 BZ |
1543 | curspeed = *(u16 *)&buf[8 + 14]; |
1544 | maxspeed = *(u16 *)&buf[8 + 8]; | |
1545 | ||
e59724c7 | 1546 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
455d80a9 BZ |
1547 | curspeed = le16_to_cpu(curspeed); |
1548 | maxspeed = le16_to_cpu(maxspeed); | |
9235e68b | 1549 | } else { |
455d80a9 BZ |
1550 | curspeed = be16_to_cpu(curspeed); |
1551 | maxspeed = be16_to_cpu(maxspeed); | |
9235e68b | 1552 | } |
481c8c64 | 1553 | |
2bc4cf2d BZ |
1554 | cd->current_speed = (curspeed + (176/2)) / 176; |
1555 | cd->max_speed = (maxspeed + (176/2)) / 176; | |
9235e68b EP |
1556 | } |
1557 | ||
20e7f7ef BZ |
1558 | #define IDE_CD_CAPABILITIES \ |
1559 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ | |
1560 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ | |
1561 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ | |
1562 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ | |
1563 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) | |
1da177e4 | 1564 | |
1da177e4 LT |
1565 | static struct cdrom_device_ops ide_cdrom_dops = { |
1566 | .open = ide_cdrom_open_real, | |
1567 | .release = ide_cdrom_release_real, | |
1568 | .drive_status = ide_cdrom_drive_status, | |
1569 | .media_changed = ide_cdrom_check_media_change_real, | |
1570 | .tray_move = ide_cdrom_tray_move, | |
1571 | .lock_door = ide_cdrom_lock_door, | |
1572 | .select_speed = ide_cdrom_select_speed, | |
1573 | .get_last_session = ide_cdrom_get_last_session, | |
1574 | .get_mcn = ide_cdrom_get_mcn, | |
1575 | .reset = ide_cdrom_reset, | |
1576 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
20e7f7ef | 1577 | .capability = IDE_CD_CAPABILITIES, |
1da177e4 LT |
1578 | .generic_packet = ide_cdrom_packet, |
1579 | }; | |
1580 | ||
9ce70fb2 | 1581 | static int ide_cdrom_register(ide_drive_t *drive, int nslots) |
1da177e4 LT |
1582 | { |
1583 | struct cdrom_info *info = drive->driver_data; | |
1584 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1585 | ||
1586 | devinfo->ops = &ide_cdrom_dops; | |
2bc4cf2d | 1587 | devinfo->speed = info->current_speed; |
1da177e4 | 1588 | devinfo->capacity = nslots; |
2a91f3e5 | 1589 | devinfo->handle = drive; |
1da177e4 | 1590 | strcpy(devinfo->name, drive->name); |
1da177e4 | 1591 | |
2bc4cf2d | 1592 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
3cbd814e BZ |
1593 | devinfo->mask |= CDC_SELECT_SPEED; |
1594 | ||
1da177e4 LT |
1595 | devinfo->disk = info->disk; |
1596 | return register_cdrom(devinfo); | |
1597 | } | |
1598 | ||
1da177e4 | 1599 | static |
9ce70fb2 | 1600 | int ide_cdrom_probe_capabilities(ide_drive_t *drive) |
1da177e4 | 1601 | { |
4fe67178 BZ |
1602 | struct cdrom_info *cd = drive->driver_data; |
1603 | struct cdrom_device_info *cdi = &cd->devinfo; | |
455d80a9 BZ |
1604 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
1605 | mechtype_t mechtype; | |
1da177e4 LT |
1606 | int nslots = 1; |
1607 | ||
3f1b86d8 BZ |
1608 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
1609 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | | |
1610 | CDC_MO_DRIVE | CDC_RAM); | |
1611 | ||
1da177e4 | 1612 | if (drive->media == ide_optical) { |
3f1b86d8 | 1613 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
1da177e4 LT |
1614 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
1615 | return nslots; | |
1616 | } | |
1617 | ||
e59724c7 | 1618 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
2bc4cf2d | 1619 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
3f1b86d8 | 1620 | cdi->mask &= ~CDC_PLAY_AUDIO; |
1da177e4 LT |
1621 | return nslots; |
1622 | } | |
1623 | ||
1624 | /* | |
1625 | * we have to cheat a little here. the packet will eventually | |
1626 | * be queued with ide_cdrom_packet(), which extracts the | |
1627 | * drive from cdi->handle. Since this device hasn't been | |
1628 | * registered with the Uniform layer yet, it can't do this. | |
1629 | * Same goes for cdi->ops. | |
1630 | */ | |
2a91f3e5 | 1631 | cdi->handle = drive; |
1da177e4 LT |
1632 | cdi->ops = &ide_cdrom_dops; |
1633 | ||
455d80a9 | 1634 | if (ide_cdrom_get_capabilities(drive, buf)) |
1da177e4 LT |
1635 | return 0; |
1636 | ||
455d80a9 | 1637 | if ((buf[8 + 6] & 0x01) == 0) |
2bc4cf2d | 1638 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
455d80a9 | 1639 | if (buf[8 + 6] & 0x08) |
2bc4cf2d | 1640 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
455d80a9 | 1641 | if (buf[8 + 3] & 0x01) |
3f1b86d8 | 1642 | cdi->mask &= ~CDC_CD_R; |
455d80a9 | 1643 | if (buf[8 + 3] & 0x02) |
3f1b86d8 | 1644 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
455d80a9 | 1645 | if (buf[8 + 2] & 0x38) |
3f1b86d8 | 1646 | cdi->mask &= ~CDC_DVD; |
455d80a9 | 1647 | if (buf[8 + 3] & 0x20) |
3f1b86d8 | 1648 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
455d80a9 | 1649 | if (buf[8 + 3] & 0x10) |
3f1b86d8 | 1650 | cdi->mask &= ~CDC_DVD_R; |
e59724c7 | 1651 | if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK)) |
3f1b86d8 | 1652 | cdi->mask &= ~CDC_PLAY_AUDIO; |
455d80a9 BZ |
1653 | |
1654 | mechtype = buf[8 + 6] >> 5; | |
1655 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) | |
3f1b86d8 | 1656 | cdi->mask |= CDC_CLOSE_TRAY; |
1da177e4 | 1657 | |
1da177e4 | 1658 | if (cdi->sanyo_slot > 0) { |
3f1b86d8 | 1659 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 | 1660 | nslots = 3; |
cdf6000d BZ |
1661 | } else if (mechtype == mechtype_individual_changer || |
1662 | mechtype == mechtype_cartridge_changer) { | |
2609d06d BZ |
1663 | nslots = cdrom_number_of_slots(cdi); |
1664 | if (nslots > 1) | |
3f1b86d8 | 1665 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 LT |
1666 | } |
1667 | ||
455d80a9 | 1668 | ide_cdrom_update_speed(drive, buf); |
4fe67178 | 1669 | |
1da177e4 | 1670 | printk(KERN_INFO "%s: ATAPI", drive->name); |
4fe67178 BZ |
1671 | |
1672 | /* don't print speed if the drive reported 0 */ | |
2bc4cf2d BZ |
1673 | if (cd->max_speed) |
1674 | printk(KERN_CONT " %dX", cd->max_speed); | |
4fe67178 | 1675 | |
3f1b86d8 | 1676 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
1da177e4 | 1677 | |
3f1b86d8 BZ |
1678 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
1679 | printk(KERN_CONT " DVD%s%s", | |
1680 | (cdi->mask & CDC_DVD_R) ? "" : "-R", | |
1681 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); | |
1da177e4 | 1682 | |
3f1b86d8 BZ |
1683 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
1684 | printk(KERN_CONT " CD%s%s", | |
1685 | (cdi->mask & CDC_CD_R) ? "" : "-R", | |
1686 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); | |
1da177e4 | 1687 | |
3f1b86d8 BZ |
1688 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
1689 | printk(KERN_CONT " changer w/%d slots", nslots); | |
1690 | else | |
1691 | printk(KERN_CONT " drive"); | |
1da177e4 | 1692 | |
455d80a9 | 1693 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12])); |
1da177e4 LT |
1694 | |
1695 | return nslots; | |
1696 | } | |
1697 | ||
7662d046 | 1698 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1699 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
1700 | { | |
1497943e | 1701 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
1da177e4 | 1702 | } |
7662d046 BZ |
1703 | #else |
1704 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } | |
1705 | #endif | |
1da177e4 LT |
1706 | |
1707 | /* | |
1708 | * standard prep_rq_fn that builds 10 byte cmds | |
1709 | */ | |
165125e1 | 1710 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
1711 | { |
1712 | int hard_sect = queue_hardsect_size(q); | |
1713 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
1714 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
1715 | ||
1716 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
1717 | ||
1718 | if (rq_data_dir(rq) == READ) | |
1719 | rq->cmd[0] = GPCMD_READ_10; | |
1720 | else | |
1721 | rq->cmd[0] = GPCMD_WRITE_10; | |
1722 | ||
1723 | /* | |
1724 | * fill in lba | |
1725 | */ | |
1726 | rq->cmd[2] = (block >> 24) & 0xff; | |
1727 | rq->cmd[3] = (block >> 16) & 0xff; | |
1728 | rq->cmd[4] = (block >> 8) & 0xff; | |
1729 | rq->cmd[5] = block & 0xff; | |
1730 | ||
1731 | /* | |
1732 | * and transfer length | |
1733 | */ | |
1734 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
1735 | rq->cmd[8] = blocks & 0xff; | |
1736 | rq->cmd_len = 10; | |
1737 | return BLKPREP_OK; | |
1738 | } | |
1739 | ||
1740 | /* | |
1741 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
1742 | * This transform handles the few exceptions. | |
1743 | */ | |
1744 | static int ide_cdrom_prep_pc(struct request *rq) | |
1745 | { | |
1746 | u8 *c = rq->cmd; | |
1747 | ||
1748 | /* | |
1749 | * Transform 6-byte read/write commands to the 10-byte version | |
1750 | */ | |
1751 | if (c[0] == READ_6 || c[0] == WRITE_6) { | |
1752 | c[8] = c[4]; | |
1753 | c[5] = c[3]; | |
1754 | c[4] = c[2]; | |
1755 | c[3] = c[1] & 0x1f; | |
1756 | c[2] = 0; | |
1757 | c[1] &= 0xe0; | |
1758 | c[0] += (READ_10 - READ_6); | |
1759 | rq->cmd_len = 10; | |
1760 | return BLKPREP_OK; | |
1761 | } | |
1762 | ||
1763 | /* | |
1764 | * it's silly to pretend we understand 6-byte sense commands, just | |
1765 | * reject with ILLEGAL_REQUEST and the caller should take the | |
1766 | * appropriate action | |
1767 | */ | |
1768 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
1769 | rq->errors = ILLEGAL_REQUEST; | |
1770 | return BLKPREP_KILL; | |
1771 | } | |
9ce70fb2 | 1772 | |
1da177e4 LT |
1773 | return BLKPREP_OK; |
1774 | } | |
1775 | ||
165125e1 | 1776 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 1777 | { |
4aff5e23 | 1778 | if (blk_fs_request(rq)) |
1da177e4 | 1779 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 1780 | else if (blk_pc_request(rq)) |
1da177e4 LT |
1781 | return ide_cdrom_prep_pc(rq); |
1782 | ||
1783 | return 0; | |
1784 | } | |
1785 | ||
e59724c7 BZ |
1786 | struct cd_list_entry { |
1787 | const char *id_model; | |
1788 | const char *id_firmware; | |
1789 | unsigned int cd_flags; | |
1790 | }; | |
1791 | ||
1792 | static const struct cd_list_entry ide_cd_quirks_list[] = { | |
1793 | /* Limit transfer size per interrupt. */ | |
1794 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
1795 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
1796 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ | |
1797 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, | |
1798 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ | |
1799 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | | |
1800 | IDE_CD_FLAG_PRE_ATAPI12, }, | |
1801 | /* Vertos 300, some versions of this drive like to talk BCD. */ | |
1802 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, | |
1803 | /* Vertos 600 ESD. */ | |
1804 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, | |
1805 | /* | |
1806 | * Sanyo 3 CD changer uses a non-standard command for CD changing | |
1807 | * (by default standard ATAPI support for CD changers is used). | |
1808 | */ | |
1809 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1810 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1811 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1812 | /* Stingray 8X CD-ROM. */ | |
1813 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, | |
1814 | /* | |
1815 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length | |
1816 | * mode sense page capabilities size, but older drives break. | |
1817 | */ | |
1818 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
1819 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
1820 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ | |
1821 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, | |
1822 | /* | |
1823 | * Some drives used by Apple don't advertise audio play | |
1824 | * but they do support reading TOC & audio datas. | |
1825 | */ | |
1826 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1827 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1828 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1829 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
acbe44e6 | 1830 | { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
e59724c7 BZ |
1831 | { NULL, NULL, 0 } |
1832 | }; | |
1833 | ||
1834 | static unsigned int ide_cd_flags(struct hd_driveid *id) | |
1835 | { | |
1836 | const struct cd_list_entry *cle = ide_cd_quirks_list; | |
1837 | ||
1838 | while (cle->id_model) { | |
1839 | if (strcmp(cle->id_model, id->model) == 0 && | |
1840 | (cle->id_firmware == NULL || | |
1841 | strstr(id->fw_rev, cle->id_firmware))) | |
1842 | return cle->cd_flags; | |
1843 | cle++; | |
1844 | } | |
1845 | ||
1846 | return 0; | |
1847 | } | |
1848 | ||
1da177e4 | 1849 | static |
9ce70fb2 | 1850 | int ide_cdrom_setup(ide_drive_t *drive) |
1da177e4 | 1851 | { |
4fe67178 BZ |
1852 | struct cdrom_info *cd = drive->driver_data; |
1853 | struct cdrom_device_info *cdi = &cd->devinfo; | |
e59724c7 | 1854 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
1855 | int nslots; |
1856 | ||
1857 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); | |
1858 | blk_queue_dma_alignment(drive->queue, 31); | |
1859 | drive->queue->unplug_delay = (1 * HZ) / 1000; | |
1860 | if (!drive->queue->unplug_delay) | |
1861 | drive->queue->unplug_delay = 1; | |
1862 | ||
1863 | drive->special.all = 0; | |
1864 | ||
e59724c7 BZ |
1865 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
1866 | ide_cd_flags(id); | |
1da177e4 | 1867 | |
e59724c7 | 1868 | if ((id->config & 0x0060) == 0x20) |
2bc4cf2d | 1869 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
e59724c7 BZ |
1870 | |
1871 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && | |
1872 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d BZ |
1873 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
1874 | IDE_CD_FLAG_TOCADDR_AS_BCD); | |
e59724c7 BZ |
1875 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
1876 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d | 1877 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
e59724c7 BZ |
1878 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
1879 | cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */ | |
1da177e4 | 1880 | |
9ce70fb2 | 1881 | nslots = ide_cdrom_probe_capabilities(drive); |
1da177e4 LT |
1882 | |
1883 | /* | |
1884 | * set correct block size | |
1885 | */ | |
1886 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); | |
1887 | ||
1888 | if (drive->autotune == IDE_TUNE_DEFAULT || | |
1889 | drive->autotune == IDE_TUNE_AUTO) | |
1890 | drive->dsc_overlap = (drive->next != drive); | |
1da177e4 LT |
1891 | |
1892 | if (ide_cdrom_register(drive, nslots)) { | |
9ce70fb2 | 1893 | printk(KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); |
4fe67178 | 1894 | cd->devinfo.handle = NULL; |
1da177e4 LT |
1895 | return 1; |
1896 | } | |
1897 | ide_cdrom_add_settings(drive); | |
1898 | return 0; | |
1899 | } | |
1900 | ||
4031bbe4 | 1901 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
1902 | { |
1903 | struct cdrom_info *info = drive->driver_data; | |
1904 | ||
7662d046 | 1905 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
1906 | |
1907 | del_gendisk(info->disk); | |
1908 | ||
1909 | ide_cd_put(info); | |
1da177e4 LT |
1910 | } |
1911 | ||
1912 | static void ide_cd_release(struct kref *kref) | |
1913 | { | |
1914 | struct cdrom_info *info = to_ide_cd(kref); | |
1915 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1916 | ide_drive_t *drive = info->drive; | |
1917 | struct gendisk *g = info->disk; | |
1918 | ||
6044ec88 | 1919 | kfree(info->toc); |
0a0c4114 AM |
1920 | if (devinfo->handle == drive) |
1921 | unregister_cdrom(devinfo); | |
1da177e4 LT |
1922 | drive->dsc_overlap = 0; |
1923 | drive->driver_data = NULL; | |
1924 | blk_queue_prep_rq(drive->queue, NULL); | |
1925 | g->private_data = NULL; | |
1926 | put_disk(g); | |
1927 | kfree(info); | |
1928 | } | |
1929 | ||
4031bbe4 | 1930 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 1931 | |
ecfd80e4 | 1932 | #ifdef CONFIG_IDE_PROC_FS |
1134b6fe BP |
1933 | static sector_t ide_cdrom_capacity(ide_drive_t *drive) |
1934 | { | |
1935 | unsigned long capacity, sectors_per_frame; | |
1936 | ||
1937 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
1938 | return 0; | |
1939 | ||
1940 | return capacity * sectors_per_frame; | |
1941 | } | |
1942 | ||
1da177e4 LT |
1943 | static int proc_idecd_read_capacity |
1944 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
1945 | { | |
2a91f3e5 | 1946 | ide_drive_t *drive = data; |
1da177e4 LT |
1947 | int len; |
1948 | ||
9ce70fb2 PC |
1949 | len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive)); |
1950 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
1951 | } |
1952 | ||
1953 | static ide_proc_entry_t idecd_proc[] = { | |
1954 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
1955 | { NULL, 0, NULL, NULL } | |
1956 | }; | |
1da177e4 LT |
1957 | #endif |
1958 | ||
1959 | static ide_driver_t ide_cdrom_driver = { | |
8604affd | 1960 | .gen_driver = { |
4ef3b8f4 | 1961 | .owner = THIS_MODULE, |
8604affd BZ |
1962 | .name = "ide-cdrom", |
1963 | .bus = &ide_bus_type, | |
8604affd | 1964 | }, |
4031bbe4 RK |
1965 | .probe = ide_cd_probe, |
1966 | .remove = ide_cd_remove, | |
1da177e4 LT |
1967 | .version = IDECD_VERSION, |
1968 | .media = ide_cdrom, | |
1da177e4 | 1969 | .supports_dsc_overlap = 1, |
1da177e4 LT |
1970 | .do_request = ide_do_rw_cdrom, |
1971 | .end_request = ide_end_request, | |
1972 | .error = __ide_error, | |
1973 | .abort = __ide_abort, | |
7662d046 | 1974 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1975 | .proc = idecd_proc, |
7662d046 | 1976 | #endif |
1da177e4 LT |
1977 | }; |
1978 | ||
9ce70fb2 | 1979 | static int idecd_open(struct inode *inode, struct file *file) |
1da177e4 LT |
1980 | { |
1981 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1982 | struct cdrom_info *info; | |
1da177e4 LT |
1983 | int rc = -ENOMEM; |
1984 | ||
9ce70fb2 PC |
1985 | info = ide_cd_get(disk); |
1986 | if (!info) | |
1da177e4 LT |
1987 | return -ENXIO; |
1988 | ||
968c4964 | 1989 | rc = cdrom_open(&info->devinfo, inode, file); |
1da177e4 LT |
1990 | |
1991 | if (rc < 0) | |
1992 | ide_cd_put(info); | |
1993 | ||
1994 | return rc; | |
1995 | } | |
1996 | ||
9ce70fb2 | 1997 | static int idecd_release(struct inode *inode, struct file *file) |
1da177e4 LT |
1998 | { |
1999 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
2000 | struct cdrom_info *info = ide_cd_g(disk); | |
1da177e4 | 2001 | |
9ce70fb2 | 2002 | cdrom_release(&info->devinfo, file); |
1da177e4 LT |
2003 | |
2004 | ide_cd_put(info); | |
2005 | ||
2006 | return 0; | |
2007 | } | |
2008 | ||
6a2900b6 CH |
2009 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
2010 | { | |
2011 | struct packet_command cgc; | |
2012 | char buffer[16]; | |
2013 | int stat; | |
2014 | char spindown; | |
2015 | ||
2016 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
2017 | return -EFAULT; | |
2018 | ||
2019 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2020 | ||
2021 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2022 | if (stat) | |
2023 | return stat; | |
2024 | ||
2025 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
2026 | return cdrom_mode_select(cdi, &cgc); | |
2027 | } | |
2028 | ||
2029 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
2030 | { | |
2031 | struct packet_command cgc; | |
2032 | char buffer[16]; | |
2033 | int stat; | |
9ce70fb2 | 2034 | char spindown; |
6a2900b6 CH |
2035 | |
2036 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2037 | ||
2038 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2039 | if (stat) | |
2040 | return stat; | |
2041 | ||
2042 | spindown = buffer[11] & 0x0f; | |
9ce70fb2 | 2043 | if (copy_to_user((void __user *)arg, &spindown, sizeof(char))) |
6a2900b6 CH |
2044 | return -EFAULT; |
2045 | return 0; | |
2046 | } | |
2047 | ||
9ce70fb2 | 2048 | static int idecd_ioctl(struct inode *inode, struct file *file, |
1da177e4 LT |
2049 | unsigned int cmd, unsigned long arg) |
2050 | { | |
2051 | struct block_device *bdev = inode->i_bdev; | |
2052 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); | |
2053 | int err; | |
2054 | ||
6a2900b6 | 2055 | switch (cmd) { |
9ce70fb2 | 2056 | case CDROMSETSPINDOWN: |
6a2900b6 | 2057 | return idecd_set_spindown(&info->devinfo, arg); |
9ce70fb2 | 2058 | case CDROMGETSPINDOWN: |
6a2900b6 CH |
2059 | return idecd_get_spindown(&info->devinfo, arg); |
2060 | default: | |
2061 | break; | |
9ce70fb2 | 2062 | } |
6a2900b6 CH |
2063 | |
2064 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); | |
1da177e4 LT |
2065 | if (err == -EINVAL) |
2066 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); | |
2067 | ||
2068 | return err; | |
2069 | } | |
2070 | ||
2071 | static int idecd_media_changed(struct gendisk *disk) | |
2072 | { | |
2073 | struct cdrom_info *info = ide_cd_g(disk); | |
2074 | return cdrom_media_changed(&info->devinfo); | |
2075 | } | |
2076 | ||
2077 | static int idecd_revalidate_disk(struct gendisk *disk) | |
2078 | { | |
2079 | struct cdrom_info *info = ide_cd_g(disk); | |
2080 | struct request_sense sense; | |
139c829d BZ |
2081 | |
2082 | ide_cd_read_toc(info->drive, &sense); | |
2083 | ||
1da177e4 LT |
2084 | return 0; |
2085 | } | |
2086 | ||
2087 | static struct block_device_operations idecd_ops = { | |
9ce70fb2 PC |
2088 | .owner = THIS_MODULE, |
2089 | .open = idecd_open, | |
2090 | .release = idecd_release, | |
2091 | .ioctl = idecd_ioctl, | |
2092 | .media_changed = idecd_media_changed, | |
2093 | .revalidate_disk = idecd_revalidate_disk | |
1da177e4 LT |
2094 | }; |
2095 | ||
2096 | /* options */ | |
9ce70fb2 | 2097 | static char *ignore; |
1da177e4 LT |
2098 | |
2099 | module_param(ignore, charp, 0400); | |
2100 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); | |
2101 | ||
4031bbe4 | 2102 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
2103 | { |
2104 | struct cdrom_info *info; | |
2105 | struct gendisk *g; | |
2106 | struct request_sense sense; | |
2107 | ||
2108 | if (!strstr("ide-cdrom", drive->driver_req)) | |
2109 | goto failed; | |
2110 | if (!drive->present) | |
2111 | goto failed; | |
2112 | if (drive->media != ide_cdrom && drive->media != ide_optical) | |
2113 | goto failed; | |
2114 | /* skip drives that we were told to ignore */ | |
2115 | if (ignore != NULL) { | |
2116 | if (strstr(ignore, drive->name)) { | |
2117 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); | |
2118 | goto failed; | |
2119 | } | |
2120 | } | |
2121 | if (drive->scsi) { | |
2122 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); | |
2123 | goto failed; | |
2124 | } | |
f5e3c2fa | 2125 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 LT |
2126 | if (info == NULL) { |
2127 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); | |
2128 | goto failed; | |
2129 | } | |
2130 | ||
2131 | g = alloc_disk(1 << PARTN_BITS); | |
2132 | if (!g) | |
2133 | goto out_free_cd; | |
2134 | ||
2135 | ide_init_disk(g, drive); | |
2136 | ||
7662d046 | 2137 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
8604affd | 2138 | |
1da177e4 LT |
2139 | kref_init(&info->kref); |
2140 | ||
2141 | info->drive = drive; | |
2142 | info->driver = &ide_cdrom_driver; | |
2143 | info->disk = g; | |
2144 | ||
2145 | g->private_data = &info->driver; | |
2146 | ||
2147 | drive->driver_data = info; | |
2148 | ||
1da177e4 | 2149 | g->minors = 1; |
1da177e4 LT |
2150 | g->driverfs_dev = &drive->gendev; |
2151 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
2152 | if (ide_cdrom_setup(drive)) { | |
7662d046 | 2153 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
05017db3 | 2154 | ide_cd_release(&info->kref); |
1da177e4 LT |
2155 | goto failed; |
2156 | } | |
1da177e4 | 2157 | |
139c829d | 2158 | ide_cd_read_toc(drive, &sense); |
1da177e4 LT |
2159 | g->fops = &idecd_ops; |
2160 | g->flags |= GENHD_FL_REMOVABLE; | |
2161 | add_disk(g); | |
2162 | return 0; | |
2163 | ||
1da177e4 LT |
2164 | out_free_cd: |
2165 | kfree(info); | |
2166 | failed: | |
8604affd | 2167 | return -ENODEV; |
1da177e4 LT |
2168 | } |
2169 | ||
2170 | static void __exit ide_cdrom_exit(void) | |
2171 | { | |
8604affd | 2172 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 2173 | } |
17514e8a BZ |
2174 | |
2175 | static int __init ide_cdrom_init(void) | |
1da177e4 | 2176 | { |
8604affd | 2177 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
2178 | } |
2179 | ||
263756ec | 2180 | MODULE_ALIAS("ide:*m-cdrom*"); |
972560fb | 2181 | MODULE_ALIAS("ide-cd"); |
1da177e4 LT |
2182 | module_init(ide_cdrom_init); |
2183 | module_exit(ide_cdrom_exit); | |
2184 | MODULE_LICENSE("GPL"); |