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 | |
16 | * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI | |
17 | * (SFF-8020i rev 2.6) standards. These documents can be obtained by | |
18 | * anonymous ftp from: | |
19 | * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps | |
20 | * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf | |
21 | * | |
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 LT |
53 | |
54 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) | |
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. */ | |
86 | static void cdrom_saw_media_change (ide_drive_t *drive) | |
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) { | |
103 | case NO_SENSE: case RECOVERED_ERROR: | |
104 | break; | |
105 | case NOT_READY: | |
106 | /* | |
107 | * don't care about tray state messages for | |
108 | * e.g. capacity commands or in-progress or | |
109 | * becoming ready | |
110 | */ | |
111 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
112 | break; | |
113 | log = 1; | |
114 | break; | |
115 | case ILLEGAL_REQUEST: | |
116 | /* | |
117 | * don't log START_STOP unit with LoEj set, since | |
118 | * we cannot reliably check if drive can auto-close | |
119 | */ | |
120 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
dbe217af AC |
121 | break; |
122 | log = 1; | |
1da177e4 LT |
123 | break; |
124 | case UNIT_ATTENTION: | |
125 | /* | |
126 | * Make good and sure we've seen this potential media | |
127 | * change. Some drives (i.e. Creative) fail to present | |
128 | * the correct sense key in the error register. | |
129 | */ | |
130 | cdrom_saw_media_change(drive); | |
131 | break; | |
132 | default: | |
133 | log = 1; | |
134 | break; | |
135 | } | |
136 | return log; | |
137 | } | |
138 | ||
139 | static | |
140 | void cdrom_analyze_sense_data(ide_drive_t *drive, | |
141 | struct request *failed_command, | |
142 | struct request_sense *sense) | |
143 | { | |
dbe217af AC |
144 | unsigned long sector; |
145 | unsigned long bio_sectors; | |
146 | unsigned long valid; | |
147 | struct cdrom_info *info = drive->driver_data; | |
148 | ||
1da177e4 LT |
149 | if (!cdrom_log_sense(drive, failed_command, sense)) |
150 | return; | |
151 | ||
152 | /* | |
153 | * If a read toc is executed for a CD-R or CD-RW medium where | |
154 | * the first toc has not been recorded yet, it will fail with | |
155 | * 05/24/00 (which is a confusing error) | |
156 | */ | |
157 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
158 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
159 | return; | |
160 | ||
dbe217af AC |
161 | if (sense->error_code == 0x70) { /* Current Error */ |
162 | switch(sense->sense_key) { | |
163 | case MEDIUM_ERROR: | |
164 | case VOLUME_OVERFLOW: | |
165 | case ILLEGAL_REQUEST: | |
166 | if (!sense->valid) | |
167 | break; | |
168 | if (failed_command == NULL || | |
169 | !blk_fs_request(failed_command)) | |
170 | break; | |
171 | sector = (sense->information[0] << 24) | | |
172 | (sense->information[1] << 16) | | |
173 | (sense->information[2] << 8) | | |
174 | (sense->information[3]); | |
175 | ||
176 | bio_sectors = bio_sectors(failed_command->bio); | |
177 | if (bio_sectors < 4) | |
178 | bio_sectors = 4; | |
179 | if (drive->queue->hardsect_size == 2048) | |
180 | sector <<= 2; /* Device sector size is 2K */ | |
181 | sector &= ~(bio_sectors -1); | |
182 | valid = (sector - failed_command->sector) << 9; | |
183 | ||
184 | if (valid < 0) | |
185 | valid = 0; | |
186 | if (sector < get_capacity(info->disk) && | |
187 | drive->probed_capacity - sector < 4 * 75) { | |
188 | set_capacity(info->disk, sector); | |
189 | } | |
190 | } | |
191 | } | |
1da177e4 | 192 | |
972560fb | 193 | ide_cd_log_error(drive->name, failed_command, sense); |
1da177e4 LT |
194 | } |
195 | ||
196 | /* | |
197 | * Initialize a ide-cd packet command request | |
198 | */ | |
17802998 | 199 | void ide_cd_init_rq(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
200 | { |
201 | struct cdrom_info *cd = drive->driver_data; | |
202 | ||
203 | ide_init_drive_cmd(rq); | |
cea2885a | 204 | rq->cmd_type = REQ_TYPE_ATA_PC; |
1da177e4 LT |
205 | rq->rq_disk = cd->disk; |
206 | } | |
207 | ||
208 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, | |
209 | struct request *failed_command) | |
210 | { | |
211 | struct cdrom_info *info = drive->driver_data; | |
212 | struct request *rq = &info->request_sense_request; | |
213 | ||
214 | if (sense == NULL) | |
215 | sense = &info->sense_data; | |
216 | ||
217 | /* stuff the sense request in front of our current request */ | |
139c829d | 218 | ide_cd_init_rq(drive, rq); |
1da177e4 LT |
219 | |
220 | rq->data = sense; | |
221 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
222 | rq->cmd[4] = rq->data_len = 18; | |
223 | ||
4aff5e23 | 224 | rq->cmd_type = REQ_TYPE_SENSE; |
1da177e4 LT |
225 | |
226 | /* NOTE! Save the failed command in "rq->buffer" */ | |
227 | rq->buffer = (void *) failed_command; | |
228 | ||
229 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
230 | } | |
231 | ||
232 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) | |
233 | { | |
234 | struct request *rq = HWGROUP(drive)->rq; | |
235 | int nsectors = rq->hard_cur_sectors; | |
236 | ||
4aff5e23 | 237 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 238 | /* |
4aff5e23 JA |
239 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
240 | * failed request | |
1da177e4 LT |
241 | */ |
242 | struct request *failed = (struct request *) rq->buffer; | |
243 | struct cdrom_info *info = drive->driver_data; | |
244 | void *sense = &info->sense_data; | |
245 | unsigned long flags; | |
246 | ||
247 | if (failed) { | |
248 | if (failed->sense) { | |
249 | sense = failed->sense; | |
250 | failed->sense_len = rq->sense_len; | |
251 | } | |
dbe217af | 252 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 LT |
253 | /* |
254 | * now end failed request | |
255 | */ | |
dbe217af AC |
256 | if (blk_fs_request(failed)) { |
257 | if (ide_end_dequeued_request(drive, failed, 0, | |
258 | failed->hard_nr_sectors)) | |
259 | BUG(); | |
260 | } else { | |
261 | spin_lock_irqsave(&ide_lock, flags); | |
5e36bb6e KU |
262 | if (__blk_end_request(failed, -EIO, |
263 | failed->data_len)) | |
264 | BUG(); | |
dbe217af AC |
265 | spin_unlock_irqrestore(&ide_lock, flags); |
266 | } | |
267 | } else | |
268 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
269 | } |
270 | ||
271 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
272 | uptodate = 1; | |
273 | /* make sure it's fully ended */ | |
274 | if (blk_pc_request(rq)) | |
275 | nsectors = (rq->data_len + 511) >> 9; | |
276 | if (!nsectors) | |
277 | nsectors = 1; | |
278 | ||
279 | ide_end_request(drive, uptodate, nsectors); | |
280 | } | |
281 | ||
dbe217af AC |
282 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
283 | { | |
284 | if (stat & 0x80) | |
285 | return; | |
286 | ide_dump_status(drive, msg, stat); | |
287 | } | |
288 | ||
1da177e4 LT |
289 | /* Returns 0 if the request should be continued. |
290 | Returns 1 if the request was ended. */ | |
291 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) | |
292 | { | |
293 | struct request *rq = HWGROUP(drive)->rq; | |
294 | int stat, err, sense_key; | |
295 | ||
296 | /* Check for errors. */ | |
c47137a9 BZ |
297 | stat = ide_read_status(drive); |
298 | ||
1da177e4 LT |
299 | if (stat_ret) |
300 | *stat_ret = stat; | |
301 | ||
302 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
303 | return 0; | |
304 | ||
305 | /* Get the IDE error register. */ | |
64a57fe4 | 306 | err = ide_read_error(drive); |
1da177e4 LT |
307 | sense_key = err >> 4; |
308 | ||
309 | if (rq == NULL) { | |
310 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); | |
311 | return 1; | |
312 | } | |
313 | ||
4aff5e23 | 314 | if (blk_sense_request(rq)) { |
1da177e4 LT |
315 | /* We got an error trying to get sense info |
316 | from the drive (probably while trying | |
317 | to recover from a former error). Just give up. */ | |
318 | ||
4aff5e23 | 319 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
320 | cdrom_end_request(drive, 0); |
321 | ide_error(drive, "request sense failure", stat); | |
322 | return 1; | |
323 | ||
8770c018 | 324 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 325 | /* All other functions, except for READ. */ |
1da177e4 LT |
326 | |
327 | /* | |
328 | * if we have an error, pass back CHECK_CONDITION as the | |
329 | * scsi status byte | |
330 | */ | |
b7156731 | 331 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
332 | rq->errors = SAM_STAT_CHECK_CONDITION; |
333 | ||
334 | /* Check for tray open. */ | |
335 | if (sense_key == NOT_READY) { | |
336 | cdrom_saw_media_change (drive); | |
337 | } else if (sense_key == UNIT_ATTENTION) { | |
338 | /* Check for media change. */ | |
339 | cdrom_saw_media_change (drive); | |
340 | /*printk("%s: media changed\n",drive->name);*/ | |
341 | return 0; | |
76ca1af1 SH |
342 | } else if ((sense_key == ILLEGAL_REQUEST) && |
343 | (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { | |
344 | /* | |
345 | * Don't print error message for this condition-- | |
346 | * SFF8090i indicates that 5/24/00 is the correct | |
347 | * response to a request to close the tray if the | |
348 | * drive doesn't have that capability. | |
349 | * cdrom_log_sense() knows this! | |
350 | */ | |
4aff5e23 | 351 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
1da177e4 LT |
352 | /* Otherwise, print an error. */ |
353 | ide_dump_status(drive, "packet command error", stat); | |
354 | } | |
355 | ||
4aff5e23 | 356 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
357 | |
358 | /* | |
359 | * instead of playing games with moving completions around, | |
360 | * remove failed request completely and end it when the | |
361 | * request sense has completed | |
362 | */ | |
bbb89e3d | 363 | goto end_request; |
1da177e4 LT |
364 | |
365 | } else if (blk_fs_request(rq)) { | |
366 | int do_end_request = 0; | |
367 | ||
368 | /* Handle errors from READ and WRITE requests. */ | |
369 | ||
370 | if (blk_noretry_request(rq)) | |
371 | do_end_request = 1; | |
372 | ||
373 | if (sense_key == NOT_READY) { | |
374 | /* Tray open. */ | |
375 | if (rq_data_dir(rq) == READ) { | |
376 | cdrom_saw_media_change (drive); | |
377 | ||
378 | /* Fail the request. */ | |
379 | printk ("%s: tray open\n", drive->name); | |
380 | do_end_request = 1; | |
381 | } else { | |
382 | struct cdrom_info *info = drive->driver_data; | |
383 | ||
384 | /* allow the drive 5 seconds to recover, some | |
385 | * devices will return this error while flushing | |
386 | * data from cache */ | |
387 | if (!rq->errors) | |
388 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; | |
389 | rq->errors = 1; | |
390 | if (time_after(jiffies, info->write_timeout)) | |
391 | do_end_request = 1; | |
392 | else { | |
393 | unsigned long flags; | |
394 | ||
395 | /* | |
396 | * take a breather relying on the | |
397 | * unplug timer to kick us again | |
398 | */ | |
399 | spin_lock_irqsave(&ide_lock, flags); | |
400 | blk_plug_device(drive->queue); | |
401 | spin_unlock_irqrestore(&ide_lock,flags); | |
402 | return 1; | |
403 | } | |
404 | } | |
405 | } else if (sense_key == UNIT_ATTENTION) { | |
406 | /* Media change. */ | |
407 | cdrom_saw_media_change (drive); | |
408 | ||
409 | /* Arrange to retry the request. | |
410 | But be sure to give up if we've retried | |
411 | too many times. */ | |
412 | if (++rq->errors > ERROR_MAX) | |
413 | do_end_request = 1; | |
414 | } else if (sense_key == ILLEGAL_REQUEST || | |
415 | sense_key == DATA_PROTECT) { | |
416 | /* No point in retrying after an illegal | |
417 | request or data protect error.*/ | |
dbe217af | 418 | ide_dump_status_no_sense (drive, "command error", stat); |
1da177e4 LT |
419 | do_end_request = 1; |
420 | } else if (sense_key == MEDIUM_ERROR) { | |
421 | /* No point in re-trying a zillion times on a bad | |
422 | * sector... If we got here the error is not correctable */ | |
dbe217af | 423 | ide_dump_status_no_sense (drive, "media error (bad sector)", stat); |
1da177e4 LT |
424 | do_end_request = 1; |
425 | } else if (sense_key == BLANK_CHECK) { | |
426 | /* Disk appears blank ?? */ | |
dbe217af | 427 | ide_dump_status_no_sense (drive, "media error (blank)", stat); |
1da177e4 LT |
428 | do_end_request = 1; |
429 | } else if ((err & ~ABRT_ERR) != 0) { | |
430 | /* Go to the default handler | |
431 | for other errors. */ | |
432 | ide_error(drive, "cdrom_decode_status", stat); | |
433 | return 1; | |
434 | } else if ((++rq->errors > ERROR_MAX)) { | |
435 | /* We've racked up too many retries. Abort. */ | |
436 | do_end_request = 1; | |
437 | } | |
438 | ||
dbe217af AC |
439 | /* End a request through request sense analysis when we have |
440 | sense data. We need this in order to perform end of media | |
441 | processing */ | |
442 | ||
bbb89e3d BZ |
443 | if (do_end_request) |
444 | goto end_request; | |
dbe217af | 445 | |
bbb89e3d BZ |
446 | /* |
447 | * If we got a CHECK_CONDITION status, | |
448 | * queue a request sense command. | |
449 | */ | |
450 | if (stat & ERR_STAT) | |
451 | cdrom_queue_request_sense(drive, NULL, NULL); | |
1da177e4 LT |
452 | } else { |
453 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); | |
454 | cdrom_end_request(drive, 0); | |
455 | } | |
456 | ||
457 | /* Retry, or handle the next request. */ | |
458 | return 1; | |
bbb89e3d BZ |
459 | |
460 | end_request: | |
461 | if (stat & ERR_STAT) { | |
462 | unsigned long flags; | |
463 | ||
464 | spin_lock_irqsave(&ide_lock, flags); | |
465 | blkdev_dequeue_request(rq); | |
466 | HWGROUP(drive)->rq = NULL; | |
467 | spin_unlock_irqrestore(&ide_lock, flags); | |
468 | ||
469 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
470 | } else | |
471 | cdrom_end_request(drive, 0); | |
472 | ||
473 | return 1; | |
1da177e4 LT |
474 | } |
475 | ||
476 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
477 | { | |
478 | struct request *rq = HWGROUP(drive)->rq; | |
479 | unsigned long wait = 0; | |
480 | ||
481 | /* | |
482 | * Some commands are *slow* and normally take a long time to | |
483 | * complete. Usually we can use the ATAPI "disconnect" to bypass | |
484 | * this, but not all commands/drives support that. Let | |
485 | * ide_timer_expiry keep polling us for these. | |
486 | */ | |
487 | switch (rq->cmd[0]) { | |
488 | case GPCMD_BLANK: | |
489 | case GPCMD_FORMAT_UNIT: | |
490 | case GPCMD_RESERVE_RZONE_TRACK: | |
491 | case GPCMD_CLOSE_TRACK: | |
492 | case GPCMD_FLUSH_CACHE: | |
493 | wait = ATAPI_WAIT_PC; | |
494 | break; | |
495 | default: | |
4aff5e23 | 496 | if (!(rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
497 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
498 | wait = 0; | |
499 | break; | |
500 | } | |
501 | return wait; | |
502 | } | |
503 | ||
504 | /* Set up the device registers for transferring a packet command on DEV, | |
505 | expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
506 | which actually transfers the command to the drive. If this is a | |
507 | drq_interrupt device, this routine will arrange for HANDLER to be | |
508 | called when the interrupt from the drive arrives. Otherwise, HANDLER | |
509 | will be called immediately after the drive is prepared for the transfer. */ | |
510 | ||
511 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, | |
512 | int xferlen, | |
513 | ide_handler_t *handler) | |
514 | { | |
515 | ide_startstop_t startstop; | |
516 | struct cdrom_info *info = drive->driver_data; | |
517 | ide_hwif_t *hwif = drive->hwif; | |
518 | ||
519 | /* Wait for the controller to be idle. */ | |
520 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) | |
521 | return startstop; | |
522 | ||
3a6a3549 | 523 | /* FIXME: for Virtual DMA we must check harder */ |
1da177e4 LT |
524 | if (info->dma) |
525 | info->dma = !hwif->dma_setup(drive); | |
526 | ||
527 | /* Set up the controller registers. */ | |
2fc57388 BZ |
528 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
529 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); | |
4fe67178 | 530 | |
2bc4cf2d | 531 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
f0dd8712 AL |
532 | /* waiting for CDB interrupt, not DMA yet. */ |
533 | if (info->dma) | |
534 | drive->waiting_for_dma = 0; | |
535 | ||
1da177e4 LT |
536 | /* packet command */ |
537 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
538 | return ide_started; | |
539 | } else { | |
540 | unsigned long flags; | |
541 | ||
542 | /* packet command */ | |
543 | spin_lock_irqsave(&ide_lock, flags); | |
23579a2a BZ |
544 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, |
545 | hwif->io_ports[IDE_COMMAND_OFFSET]); | |
1da177e4 LT |
546 | ndelay(400); |
547 | spin_unlock_irqrestore(&ide_lock, flags); | |
548 | ||
549 | return (*handler) (drive); | |
550 | } | |
551 | } | |
552 | ||
553 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. | |
554 | The device registers must have already been prepared | |
555 | by cdrom_start_packet_command. | |
556 | HANDLER is the interrupt handler to call when the command completes | |
557 | or there's data ready. */ | |
1da177e4 LT |
558 | #define ATAPI_MIN_CDB_BYTES 12 |
559 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, | |
560 | struct request *rq, | |
561 | ide_handler_t *handler) | |
562 | { | |
563 | ide_hwif_t *hwif = drive->hwif; | |
564 | int cmd_len; | |
565 | struct cdrom_info *info = drive->driver_data; | |
566 | ide_startstop_t startstop; | |
567 | ||
2bc4cf2d | 568 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
569 | /* Here we should have been called after receiving an interrupt |
570 | from the device. DRQ should how be set. */ | |
571 | ||
572 | /* Check for errors. */ | |
573 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) | |
574 | return ide_stopped; | |
f0dd8712 AL |
575 | |
576 | /* Ok, next interrupt will be DMA interrupt. */ | |
577 | if (info->dma) | |
578 | drive->waiting_for_dma = 1; | |
1da177e4 LT |
579 | } else { |
580 | /* Otherwise, we must wait for DRQ to get set. */ | |
581 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, | |
582 | BUSY_STAT, WAIT_READY)) | |
583 | return startstop; | |
584 | } | |
585 | ||
586 | /* Arm the interrupt handler. */ | |
587 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); | |
588 | ||
589 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
590 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
591 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
592 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
593 | ||
594 | /* Send the command to the device. */ | |
595 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); | |
596 | ||
597 | /* Start the DMA if need be */ | |
598 | if (info->dma) | |
599 | hwif->dma_start(drive); | |
600 | ||
601 | return ide_started; | |
602 | } | |
603 | ||
604 | /**************************************************************************** | |
605 | * Block read functions. | |
606 | */ | |
607 | ||
5a5222d9 BZ |
608 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
609 | { | |
610 | while (len > 0) { | |
611 | int dum = 0; | |
612 | xf(drive, &dum, sizeof(dum)); | |
613 | len -= sizeof(dum); | |
614 | } | |
615 | } | |
616 | ||
b4ab726c BZ |
617 | static void ide_cd_drain_data(ide_drive_t *drive, int nsects) |
618 | { | |
619 | while (nsects > 0) { | |
620 | static char dum[SECTOR_SIZE]; | |
621 | ||
622 | drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum)); | |
623 | nsects--; | |
624 | } | |
625 | } | |
626 | ||
1da177e4 LT |
627 | /* |
628 | * Check the contents of the interrupt reason register from the cdrom | |
629 | * and attempt to recover if there are problems. Returns 0 if everything's | |
630 | * ok; nonzero if the request has been terminated. | |
631 | */ | |
9f10d9ee BZ |
632 | static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, |
633 | int len, int ireason, int rw) | |
1da177e4 | 634 | { |
0d6f7e3a BZ |
635 | /* |
636 | * ireason == 0: the drive wants to receive data from us | |
637 | * ireason == 2: the drive is expecting to transfer data to us | |
638 | */ | |
639 | if (ireason == (!rw << 1)) | |
1da177e4 | 640 | return 0; |
0d6f7e3a | 641 | else if (ireason == (rw << 1)) { |
5a5222d9 | 642 | ide_hwif_t *hwif = drive->hwif; |
0d6f7e3a | 643 | xfer_func_t *xf; |
5a5222d9 | 644 | |
0d6f7e3a | 645 | /* Whoops... */ |
35379c07 BZ |
646 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
647 | drive->name, __FUNCTION__); | |
1da177e4 | 648 | |
0d6f7e3a BZ |
649 | xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes; |
650 | ide_cd_pad_transfer(drive, xf, len); | |
651 | } else if (rw == 0 && ireason == 1) { | |
1da177e4 LT |
652 | /* Some drives (ASUS) seem to tell us that status |
653 | * info is available. just get it and ignore. | |
654 | */ | |
c47137a9 | 655 | (void)ide_read_status(drive); |
1da177e4 LT |
656 | return 0; |
657 | } else { | |
658 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
659 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
660 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
661 | } |
662 | ||
9f10d9ee BZ |
663 | if (rq->cmd_type == REQ_TYPE_ATA_PC) |
664 | rq->cmd_flags |= REQ_FAILED; | |
665 | ||
1da177e4 LT |
666 | cdrom_end_request(drive, 0); |
667 | return -1; | |
668 | } | |
669 | ||
64814f23 BZ |
670 | /* |
671 | * Assume that the drive will always provide data in multiples of at least | |
672 | * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. | |
673 | */ | |
674 | static int ide_cd_check_transfer_size(ide_drive_t *drive, int len) | |
675 | { | |
676 | struct cdrom_info *cd = drive->driver_data; | |
677 | ||
678 | if ((len % SECTOR_SIZE) == 0) | |
679 | return 0; | |
680 | ||
681 | printk(KERN_ERR "%s: %s: Bad transfer size %d\n", | |
682 | drive->name, __FUNCTION__, len); | |
683 | ||
684 | if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) | |
685 | printk(KERN_ERR " This drive is not supported by " | |
686 | "this version of the driver\n"); | |
687 | else { | |
688 | printk(KERN_ERR " Trying to limit transfer sizes\n"); | |
689 | cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; | |
690 | } | |
691 | ||
692 | return 1; | |
693 | } | |
694 | ||
0041e7c6 | 695 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); |
94f5a86d | 696 | |
1da177e4 | 697 | /* |
29f3aaca BZ |
698 | * Routine to send a read/write packet command to the drive. |
699 | * This is usually called directly from cdrom_start_{read,write}(). | |
1da177e4 LT |
700 | * However, for drq_interrupt devices, it is called from an interrupt |
701 | * when the drive is ready to accept the command. | |
702 | */ | |
29f3aaca | 703 | static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive) |
1da177e4 LT |
704 | { |
705 | struct request *rq = HWGROUP(drive)->rq; | |
1da177e4 | 706 | |
29f3aaca BZ |
707 | if (rq_data_dir(rq) == READ) { |
708 | unsigned short sectors_per_frame = | |
709 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
710 | int nskip = rq->sector & (sectors_per_frame - 1); | |
1da177e4 | 711 | |
29f3aaca BZ |
712 | /* |
713 | * If the requested sector doesn't start on a frame boundary, | |
714 | * we must adjust the start of the transfer so that it does, | |
715 | * and remember to skip the first few sectors. | |
716 | * | |
717 | * If the rq->current_nr_sectors field is larger than the size | |
718 | * of the buffer, it will mean that we're to skip a number of | |
719 | * sectors equal to the amount by which rq->current_nr_sectors | |
720 | * is larger than the buffer size. | |
721 | */ | |
722 | if (nskip > 0) { | |
723 | /* Sanity check... */ | |
724 | if (rq->current_nr_sectors != | |
725 | bio_cur_sectors(rq->bio)) { | |
726 | printk(KERN_ERR "%s: %s: buffer botch (%u)\n", | |
727 | drive->name, __FUNCTION__, | |
728 | rq->current_nr_sectors); | |
729 | cdrom_end_request(drive, 0); | |
730 | return ide_stopped; | |
731 | } | |
732 | rq->current_nr_sectors += nskip; | |
1da177e4 | 733 | } |
1da177e4 | 734 | } |
29f3aaca BZ |
735 | #if 0 |
736 | else | |
737 | /* the immediate bit */ | |
738 | rq->cmd[1] = 1 << 3; | |
739 | #endif | |
1da177e4 LT |
740 | /* Set up the command */ |
741 | rq->timeout = ATAPI_WAIT_PC; | |
742 | ||
743 | /* Send the command to the drive and return. */ | |
0041e7c6 | 744 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
1da177e4 LT |
745 | } |
746 | ||
1da177e4 LT |
747 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
748 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ | |
749 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ | |
750 | ||
751 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) | |
752 | { | |
753 | struct cdrom_info *info = drive->driver_data; | |
754 | int stat; | |
755 | static int retry = 10; | |
756 | ||
757 | if (cdrom_decode_status(drive, 0, &stat)) | |
758 | return ide_stopped; | |
4fe67178 | 759 | |
2bc4cf2d | 760 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
761 | |
762 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { | |
763 | if (--retry == 0) { | |
764 | /* | |
765 | * this condition is far too common, to bother | |
766 | * users about it | |
767 | */ | |
768 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ | |
769 | drive->dsc_overlap = 0; | |
770 | } | |
771 | } | |
772 | return ide_stopped; | |
773 | } | |
774 | ||
775 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) | |
776 | { | |
777 | struct request *rq = HWGROUP(drive)->rq; | |
778 | sector_t frame = rq->sector; | |
779 | ||
780 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); | |
781 | ||
782 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
783 | rq->cmd[0] = GPCMD_SEEK; | |
784 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); | |
785 | ||
786 | rq->timeout = ATAPI_WAIT_PC; | |
787 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); | |
788 | } | |
789 | ||
790 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) | |
791 | { | |
792 | struct cdrom_info *info = drive->driver_data; | |
793 | ||
794 | info->dma = 0; | |
1da177e4 LT |
795 | info->start_seek = jiffies; |
796 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); | |
797 | } | |
798 | ||
799 | /* Fix up a possibly partially-processed request so that we can | |
800 | start it over entirely, or even put it back on the request queue. */ | |
801 | static void restore_request (struct request *rq) | |
802 | { | |
803 | if (rq->buffer != bio_data(rq->bio)) { | |
804 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; | |
805 | ||
806 | rq->buffer = bio_data(rq->bio); | |
807 | rq->nr_sectors += n; | |
808 | rq->sector -= n; | |
809 | } | |
810 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); | |
811 | rq->hard_nr_sectors = rq->nr_sectors; | |
812 | rq->hard_sector = rq->sector; | |
813 | rq->q->prep_rq_fn(rq->q, rq); | |
814 | } | |
815 | ||
1da177e4 LT |
816 | /**************************************************************************** |
817 | * Execute all other packet commands. | |
818 | */ | |
819 | ||
8ee69f5a BZ |
820 | static void ide_cd_request_sense_fixup(struct request *rq) |
821 | { | |
822 | /* | |
823 | * Some of the trailing request sense fields are optional, | |
824 | * and some drives don't send them. Sigh. | |
825 | */ | |
826 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
827 | rq->data_len > 0 && rq->data_len <= 5) | |
828 | while (rq->data_len > 0) { | |
829 | *(u8 *)rq->data++ = 0; | |
830 | --rq->data_len; | |
831 | } | |
832 | } | |
833 | ||
17802998 | 834 | int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
835 | { |
836 | struct request_sense sense; | |
837 | int retries = 10; | |
4aff5e23 | 838 | unsigned int flags = rq->cmd_flags; |
1da177e4 LT |
839 | |
840 | if (rq->sense == NULL) | |
841 | rq->sense = &sense; | |
842 | ||
843 | /* Start of retry loop. */ | |
844 | do { | |
845 | int error; | |
846 | unsigned long time = jiffies; | |
4aff5e23 | 847 | rq->cmd_flags = flags; |
1da177e4 LT |
848 | |
849 | error = ide_do_drive_cmd(drive, rq, ide_wait); | |
850 | time = jiffies - time; | |
851 | ||
852 | /* FIXME: we should probably abort/retry or something | |
853 | * in case of failure */ | |
4aff5e23 | 854 | if (rq->cmd_flags & REQ_FAILED) { |
1da177e4 LT |
855 | /* The request failed. Retry if it was due to a unit |
856 | attention status | |
857 | (usually means media was changed). */ | |
858 | struct request_sense *reqbuf = rq->sense; | |
859 | ||
860 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
861 | cdrom_saw_media_change(drive); | |
862 | else if (reqbuf->sense_key == NOT_READY && | |
863 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
864 | /* The drive is in the process of loading | |
865 | a disk. Retry, but wait a little to give | |
866 | the drive time to complete the load. */ | |
867 | ssleep(2); | |
868 | } else { | |
869 | /* Otherwise, don't retry. */ | |
870 | retries = 0; | |
871 | } | |
872 | --retries; | |
873 | } | |
874 | ||
875 | /* End of retry loop. */ | |
4aff5e23 | 876 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
1da177e4 LT |
877 | |
878 | /* Return an error if the command failed. */ | |
4aff5e23 | 879 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
880 | } |
881 | ||
aaa04c28 KU |
882 | /* |
883 | * Called from blk_end_request_callback() after the data of the request | |
884 | * is completed and before the request is completed. | |
885 | * By returning value '1', blk_end_request_callback() returns immediately | |
886 | * without completing the request. | |
887 | */ | |
888 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) | |
889 | { | |
890 | return 1; | |
891 | } | |
892 | ||
1da177e4 LT |
893 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
894 | { | |
23579a2a | 895 | ide_hwif_t *hwif = drive->hwif; |
1da177e4 LT |
896 | struct cdrom_info *info = drive->driver_data; |
897 | struct request *rq = HWGROUP(drive)->rq; | |
1da177e4 | 898 | xfer_func_t *xferfunc; |
0041e7c6 | 899 | ide_expiry_t *expiry = NULL; |
ff1bfbc1 BZ |
900 | int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0; |
901 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; | |
902 | unsigned int timeout; | |
903 | u8 lowcyl, highcyl; | |
1da177e4 LT |
904 | |
905 | /* Check for errors. */ | |
1da177e4 LT |
906 | dma = info->dma; |
907 | if (dma) { | |
908 | info->dma = 0; | |
909 | dma_error = HWIF(drive)->ide_dma_end(drive); | |
eba15fba BZ |
910 | if (dma_error) { |
911 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
ff1bfbc1 | 912 | write ? "write" : "read"); |
eba15fba BZ |
913 | ide_dma_off(drive); |
914 | } | |
1da177e4 LT |
915 | } |
916 | ||
917 | if (cdrom_decode_status(drive, 0, &stat)) | |
918 | return ide_stopped; | |
919 | ||
920 | /* | |
921 | * using dma, transfer is complete now | |
922 | */ | |
923 | if (dma) { | |
eba15fba | 924 | if (dma_error) |
1da177e4 | 925 | return ide_error(drive, "dma error", stat); |
0041e7c6 BZ |
926 | if (blk_fs_request(rq)) { |
927 | ide_end_request(drive, 1, rq->nr_sectors); | |
928 | return ide_stopped; | |
929 | } | |
ff1bfbc1 | 930 | goto end_request; |
1da177e4 LT |
931 | } |
932 | ||
933 | /* | |
934 | * ok we fall to pio :/ | |
935 | */ | |
23579a2a BZ |
936 | ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]) & 0x3; |
937 | lowcyl = hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]); | |
938 | highcyl = hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]); | |
1da177e4 LT |
939 | |
940 | len = lowcyl + (256 * highcyl); | |
0041e7c6 BZ |
941 | |
942 | thislen = blk_fs_request(rq) ? len : rq->data_len; | |
1da177e4 LT |
943 | if (thislen > len) |
944 | thislen = len; | |
945 | ||
946 | /* | |
947 | * If DRQ is clear, the command has completed. | |
948 | */ | |
aaa04c28 | 949 | if ((stat & DRQ_STAT) == 0) { |
0041e7c6 BZ |
950 | if (blk_fs_request(rq)) { |
951 | /* | |
952 | * If we're not done reading/writing, complain. | |
953 | * Otherwise, complete the command normally. | |
954 | */ | |
955 | uptodate = 1; | |
956 | if (rq->current_nr_sectors > 0) { | |
957 | printk(KERN_ERR "%s: %s: data underrun " | |
958 | "(%d blocks)\n", | |
959 | drive->name, __FUNCTION__, | |
960 | rq->current_nr_sectors); | |
961 | if (!write) | |
962 | rq->cmd_flags |= REQ_FAILED; | |
963 | uptodate = 0; | |
964 | } | |
965 | cdrom_end_request(drive, uptodate); | |
966 | return ide_stopped; | |
967 | } else if (!blk_pc_request(rq)) { | |
ff1bfbc1 BZ |
968 | ide_cd_request_sense_fixup(rq); |
969 | /* Complain if we still have data left to transfer. */ | |
970 | uptodate = rq->data_len ? 0 : 1; | |
971 | } | |
972 | goto end_request; | |
aaa04c28 | 973 | } |
1da177e4 LT |
974 | |
975 | /* | |
976 | * check which way to transfer data | |
977 | */ | |
9f10d9ee BZ |
978 | if (ide_cd_check_ireason(drive, rq, len, ireason, write)) |
979 | return ide_stopped; | |
0041e7c6 | 980 | |
9f10d9ee BZ |
981 | if (blk_fs_request(rq)) { |
982 | if (write == 0) { | |
0041e7c6 BZ |
983 | int nskip; |
984 | ||
985 | if (ide_cd_check_transfer_size(drive, len)) { | |
986 | cdrom_end_request(drive, 0); | |
987 | return ide_stopped; | |
988 | } | |
989 | ||
990 | /* | |
991 | * First, figure out if we need to bit-bucket | |
992 | * any of the leading sectors. | |
993 | */ | |
994 | nskip = min_t(int, rq->current_nr_sectors | |
995 | - bio_cur_sectors(rq->bio), | |
996 | thislen >> 9); | |
997 | if (nskip > 0) { | |
998 | ide_cd_drain_data(drive, nskip); | |
999 | rq->current_nr_sectors -= nskip; | |
1000 | thislen -= (nskip << 9); | |
1001 | } | |
1002 | } | |
ff1bfbc1 | 1003 | } |
1da177e4 | 1004 | |
ff1bfbc1 BZ |
1005 | if (ireason == 0) { |
1006 | write = 1; | |
1007 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
9f10d9ee | 1008 | } else { |
ff1bfbc1 | 1009 | write = 0; |
1da177e4 LT |
1010 | xferfunc = HWIF(drive)->atapi_input_bytes; |
1011 | } | |
1012 | ||
1013 | /* | |
1014 | * transfer data | |
1015 | */ | |
1016 | while (thislen > 0) { | |
0041e7c6 | 1017 | u8 *ptr = blk_fs_request(rq) ? NULL : rq->data; |
a11e77db | 1018 | int blen = rq->data_len; |
1da177e4 LT |
1019 | |
1020 | /* | |
1021 | * bio backed? | |
1022 | */ | |
1023 | if (rq->bio) { | |
0041e7c6 BZ |
1024 | if (blk_fs_request(rq)) { |
1025 | ptr = rq->buffer; | |
1026 | blen = rq->current_nr_sectors << 9; | |
1027 | } else { | |
1028 | ptr = bio_data(rq->bio); | |
1029 | blen = bio_iovec(rq->bio)->bv_len; | |
1030 | } | |
1da177e4 LT |
1031 | } |
1032 | ||
1033 | if (!ptr) { | |
0041e7c6 BZ |
1034 | if (blk_fs_request(rq) && !write) |
1035 | /* | |
968c4964 BP |
1036 | * If the buffers are full, pipe the rest into |
1037 | * oblivion. */ | |
1038 | ide_cd_drain_data(drive, thislen >> 9); | |
0041e7c6 BZ |
1039 | else { |
1040 | printk(KERN_ERR "%s: confused, missing data\n", | |
1041 | drive->name); | |
1042 | blk_dump_rq_flags(rq, rq_data_dir(rq) | |
1043 | ? "cdrom_newpc_intr, write" | |
1044 | : "cdrom_newpc_intr, read"); | |
1045 | } | |
1da177e4 LT |
1046 | break; |
1047 | } | |
1048 | ||
1049 | if (blen > thislen) | |
1050 | blen = thislen; | |
1051 | ||
1052 | xferfunc(drive, ptr, blen); | |
1053 | ||
1054 | thislen -= blen; | |
1055 | len -= blen; | |
1da177e4 | 1056 | |
0041e7c6 BZ |
1057 | if (blk_fs_request(rq)) { |
1058 | rq->buffer += blen; | |
1059 | rq->nr_sectors -= (blen >> 9); | |
1060 | rq->current_nr_sectors -= (blen >> 9); | |
1061 | rq->sector += (blen >> 9); | |
1062 | ||
1063 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1064 | cdrom_end_request(drive, 1); | |
1065 | } else { | |
1066 | rq->data_len -= blen; | |
1067 | ||
aaa04c28 KU |
1068 | /* |
1069 | * The request can't be completed until DRQ is cleared. | |
1070 | * So complete the data, but don't complete the request | |
1071 | * using the dummy function for the callback feature | |
1072 | * of blk_end_request_callback(). | |
1073 | */ | |
0041e7c6 BZ |
1074 | if (rq->bio) |
1075 | blk_end_request_callback(rq, 0, blen, | |
aaa04c28 | 1076 | cdrom_newpc_intr_dummy_cb); |
0041e7c6 BZ |
1077 | else |
1078 | rq->data += blen; | |
1079 | } | |
bcd88ac3 AS |
1080 | if (!write && blk_sense_request(rq)) |
1081 | rq->sense_len += blen; | |
1da177e4 LT |
1082 | } |
1083 | ||
1084 | /* | |
1085 | * pad, if necessary | |
1086 | */ | |
0041e7c6 | 1087 | if (!blk_fs_request(rq) && len > 0) |
5a5222d9 | 1088 | ide_cd_pad_transfer(drive, xferfunc, len); |
1da177e4 | 1089 | |
ff1bfbc1 BZ |
1090 | if (blk_pc_request(rq)) { |
1091 | timeout = rq->timeout; | |
ff1bfbc1 BZ |
1092 | } else { |
1093 | timeout = ATAPI_WAIT_PC; | |
0041e7c6 BZ |
1094 | if (!blk_fs_request(rq)) |
1095 | expiry = cdrom_timer_expiry; | |
ff1bfbc1 BZ |
1096 | } |
1097 | ||
1098 | ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); | |
1da177e4 | 1099 | return ide_started; |
ff1bfbc1 BZ |
1100 | |
1101 | end_request: | |
1102 | if (blk_pc_request(rq)) { | |
1103 | unsigned long flags; | |
14e04c3f KU |
1104 | unsigned int dlen = rq->data_len; |
1105 | ||
1106 | if (dma) | |
1107 | rq->data_len = 0; | |
ff1bfbc1 BZ |
1108 | |
1109 | spin_lock_irqsave(&ide_lock, flags); | |
14e04c3f | 1110 | if (__blk_end_request(rq, 0, dlen)) |
ff1bfbc1 BZ |
1111 | BUG(); |
1112 | HWGROUP(drive)->rq = NULL; | |
1113 | spin_unlock_irqrestore(&ide_lock, flags); | |
1114 | } else { | |
1115 | if (!uptodate) | |
1116 | rq->cmd_flags |= REQ_FAILED; | |
1117 | cdrom_end_request(drive, uptodate); | |
1118 | } | |
1119 | return ide_stopped; | |
1da177e4 LT |
1120 | } |
1121 | ||
21ea1f0f | 1122 | static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) |
1da177e4 | 1123 | { |
21ea1f0f BZ |
1124 | struct cdrom_info *cd = drive->driver_data; |
1125 | int write = rq_data_dir(rq) == WRITE; | |
1126 | unsigned short sectors_per_frame = | |
1127 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1da177e4 | 1128 | |
21ea1f0f BZ |
1129 | if (write) { |
1130 | /* | |
1131 | * disk has become write protected | |
1132 | */ | |
1133 | if (cd->disk->policy) { | |
1134 | cdrom_end_request(drive, 0); | |
1135 | return ide_stopped; | |
1136 | } | |
1137 | } else { | |
1138 | /* | |
1139 | * We may be retrying this request after an error. Fix up any | |
1140 | * weirdness which might be present in the request packet. | |
1141 | */ | |
1142 | restore_request(rq); | |
1da177e4 LT |
1143 | } |
1144 | ||
1145 | /* | |
21ea1f0f | 1146 | * use DMA, if possible / writes *must* be hardware frame aligned |
1da177e4 | 1147 | */ |
21ea1f0f BZ |
1148 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
1149 | (rq->sector & (sectors_per_frame - 1))) { | |
1150 | if (write) { | |
1151 | cdrom_end_request(drive, 0); | |
1152 | return ide_stopped; | |
1153 | } | |
1154 | cd->dma = 0; | |
1155 | } else | |
1156 | cd->dma = drive->using_dma; | |
1da177e4 | 1157 | |
21ea1f0f BZ |
1158 | if (write) |
1159 | cd->devinfo.media_written = 1; | |
1da177e4 | 1160 | |
21ea1f0f | 1161 | /* Start sending the read/write request to the drive. */ |
29f3aaca | 1162 | return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont); |
1da177e4 LT |
1163 | } |
1164 | ||
1165 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1166 | { | |
1167 | struct request *rq = HWGROUP(drive)->rq; | |
1168 | ||
1169 | if (!rq->timeout) | |
1170 | rq->timeout = ATAPI_WAIT_PC; | |
1171 | ||
1172 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); | |
1173 | } | |
1174 | ||
1175 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) | |
1176 | { | |
1177 | struct cdrom_info *info = drive->driver_data; | |
1178 | ||
c9f56a80 BZ |
1179 | if (blk_pc_request(rq)) |
1180 | rq->cmd_flags |= REQ_QUIET; | |
1181 | else | |
1182 | rq->cmd_flags &= ~REQ_FAILED; | |
1da177e4 LT |
1183 | |
1184 | info->dma = 0; | |
1da177e4 LT |
1185 | |
1186 | /* | |
1187 | * sg request | |
1188 | */ | |
1189 | if (rq->bio) { | |
1190 | int mask = drive->queue->dma_alignment; | |
1191 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); | |
1192 | ||
1da177e4 LT |
1193 | info->dma = drive->using_dma; |
1194 | ||
1195 | /* | |
1196 | * check if dma is safe | |
5d9e4ea5 LT |
1197 | * |
1198 | * NOTE! The "len" and "addr" checks should possibly have | |
1199 | * separate masks. | |
1da177e4 | 1200 | */ |
4e7c6816 | 1201 | if ((rq->data_len & 15) || (addr & mask)) |
1da177e4 LT |
1202 | info->dma = 0; |
1203 | } | |
1204 | ||
1205 | /* Start sending the command to the drive. */ | |
1206 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); | |
1207 | } | |
1208 | ||
1209 | /**************************************************************************** | |
1210 | * cdrom driver request routine. | |
1211 | */ | |
1212 | static ide_startstop_t | |
1213 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) | |
1214 | { | |
1215 | ide_startstop_t action; | |
1216 | struct cdrom_info *info = drive->driver_data; | |
1217 | ||
1218 | if (blk_fs_request(rq)) { | |
2bc4cf2d | 1219 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
1da177e4 | 1220 | unsigned long elapsed = jiffies - info->start_seek; |
c47137a9 | 1221 | int stat = ide_read_status(drive); |
1da177e4 LT |
1222 | |
1223 | if ((stat & SEEK_STAT) != SEEK_STAT) { | |
1224 | if (elapsed < IDECD_SEEK_TIMEOUT) { | |
1225 | ide_stall_queue(drive, IDECD_SEEK_TIMER); | |
1226 | return ide_stopped; | |
1227 | } | |
1228 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); | |
1229 | } | |
2bc4cf2d | 1230 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
1231 | } |
1232 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { | |
1233 | action = cdrom_start_seek(drive, block); | |
21ea1f0f BZ |
1234 | } else |
1235 | action = cdrom_start_rw(drive, rq); | |
1da177e4 LT |
1236 | info->last_block = block; |
1237 | return action; | |
c9f56a80 | 1238 | } else if (blk_sense_request(rq) || blk_pc_request(rq) || |
cea2885a | 1239 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 1240 | return cdrom_do_block_pc(drive, rq); |
4aff5e23 | 1241 | } else if (blk_special_request(rq)) { |
1da177e4 LT |
1242 | /* |
1243 | * right now this can only be a reset... | |
1244 | */ | |
1245 | cdrom_end_request(drive, 1); | |
1246 | return ide_stopped; | |
1247 | } | |
1248 | ||
1249 | blk_dump_rq_flags(rq, "ide-cd bad flags"); | |
1250 | cdrom_end_request(drive, 0); | |
1251 | return ide_stopped; | |
1252 | } | |
1253 | ||
1254 | ||
1255 | ||
1256 | /**************************************************************************** | |
1257 | * Ioctl handling. | |
1258 | * | |
1259 | * Routines which queue packet commands take as a final argument a pointer | |
1260 | * to a request_sense struct. If execution of the command results | |
1261 | * in an error with a CHECK CONDITION status, this structure will be filled | |
1262 | * with the results of the subsequent request sense command. The pointer | |
1263 | * can also be NULL, in which case no sense information is returned. | |
1264 | */ | |
1265 | ||
1da177e4 LT |
1266 | static |
1267 | void msf_from_bcd (struct atapi_msf *msf) | |
1268 | { | |
9a6dc668 BZ |
1269 | msf->minute = BCD2BIN(msf->minute); |
1270 | msf->second = BCD2BIN(msf->second); | |
1271 | msf->frame = BCD2BIN(msf->frame); | |
1da177e4 LT |
1272 | } |
1273 | ||
f9afd18b | 1274 | int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 LT |
1275 | { |
1276 | struct request req; | |
1277 | struct cdrom_info *info = drive->driver_data; | |
1278 | struct cdrom_device_info *cdi = &info->devinfo; | |
1279 | ||
139c829d | 1280 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1281 | |
1282 | req.sense = sense; | |
1283 | req.cmd[0] = GPCMD_TEST_UNIT_READY; | |
4aff5e23 | 1284 | req.cmd_flags |= REQ_QUIET; |
1da177e4 | 1285 | |
cdf6000d BZ |
1286 | /* |
1287 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to | |
1288 | * switch CDs instead of supporting the LOAD_UNLOAD opcode. | |
1289 | */ | |
1da177e4 | 1290 | req.cmd[7] = cdi->sanyo_slot % 3; |
1da177e4 | 1291 | |
139c829d | 1292 | return ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1293 | } |
1294 | ||
1da177e4 LT |
1295 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
1296 | unsigned long *sectors_per_frame, | |
1297 | struct request_sense *sense) | |
1298 | { | |
1299 | struct { | |
1300 | __u32 lba; | |
1301 | __u32 blocklen; | |
1302 | } capbuf; | |
1303 | ||
1304 | int stat; | |
1305 | struct request req; | |
1306 | ||
139c829d | 1307 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1308 | |
1309 | req.sense = sense; | |
1310 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
1311 | req.data = (char *)&capbuf; | |
1312 | req.data_len = sizeof(capbuf); | |
4aff5e23 | 1313 | req.cmd_flags |= REQ_QUIET; |
1da177e4 | 1314 | |
139c829d | 1315 | stat = ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1316 | if (stat == 0) { |
1317 | *capacity = 1 + be32_to_cpu(capbuf.lba); | |
1318 | *sectors_per_frame = | |
1319 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; | |
1320 | } | |
1321 | ||
1322 | return stat; | |
1323 | } | |
1324 | ||
1325 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
1326 | int format, char *buf, int buflen, | |
1327 | struct request_sense *sense) | |
1328 | { | |
1329 | struct request req; | |
1330 | ||
139c829d | 1331 | ide_cd_init_rq(drive, &req); |
1da177e4 LT |
1332 | |
1333 | req.sense = sense; | |
1334 | req.data = buf; | |
1335 | req.data_len = buflen; | |
4aff5e23 | 1336 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1337 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
1338 | req.cmd[6] = trackno; | |
1339 | req.cmd[7] = (buflen >> 8); | |
1340 | req.cmd[8] = (buflen & 0xff); | |
1341 | req.cmd[9] = (format << 6); | |
1342 | ||
1343 | if (msf_flag) | |
1344 | req.cmd[1] = 2; | |
1345 | ||
139c829d | 1346 | return ide_cd_queue_pc(drive, &req); |
1da177e4 LT |
1347 | } |
1348 | ||
1da177e4 | 1349 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
17802998 | 1350 | int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 LT |
1351 | { |
1352 | int stat, ntracks, i; | |
1353 | struct cdrom_info *info = drive->driver_data; | |
1354 | struct cdrom_device_info *cdi = &info->devinfo; | |
1355 | struct atapi_toc *toc = info->toc; | |
1356 | struct { | |
1357 | struct atapi_toc_header hdr; | |
1358 | struct atapi_toc_entry ent; | |
1359 | } ms_tmp; | |
1360 | long last_written; | |
1361 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
1362 | ||
1363 | if (toc == NULL) { | |
1364 | /* Try to allocate space. */ | |
2a91f3e5 | 1365 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 LT |
1366 | if (toc == NULL) { |
1367 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); | |
1368 | return -ENOMEM; | |
1369 | } | |
2a91f3e5 | 1370 | info->toc = toc; |
1da177e4 LT |
1371 | } |
1372 | ||
1373 | /* Check to see if the existing data is still valid. | |
1374 | If it is, just return. */ | |
1375 | (void) cdrom_check_status(drive, sense); | |
1376 | ||
2bc4cf2d | 1377 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
1da177e4 LT |
1378 | return 0; |
1379 | ||
1380 | /* Try to get the total cdrom capacity and sector size. */ | |
1381 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, | |
1382 | sense); | |
1383 | if (stat) | |
1384 | toc->capacity = 0x1fffff; | |
1385 | ||
1386 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af AC |
1387 | /* Save a private copy of te TOC capacity for error handling */ |
1388 | drive->probed_capacity = toc->capacity * sectors_per_frame; | |
1389 | ||
1da177e4 LT |
1390 | blk_queue_hardsect_size(drive->queue, |
1391 | sectors_per_frame << SECTOR_BITS); | |
1392 | ||
1393 | /* First read just the header, so we know how long the TOC is. */ | |
1394 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, | |
1395 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
1396 | if (stat) |
1397 | return stat; | |
1da177e4 | 1398 | |
2bc4cf2d | 1399 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1400 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1401 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1402 | } |
1da177e4 LT |
1403 | |
1404 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
1405 | if (ntracks <= 0) | |
1406 | return -EIO; | |
1407 | if (ntracks > MAX_TRACKS) | |
1408 | ntracks = MAX_TRACKS; | |
1409 | ||
1410 | /* Now read the whole schmeer. */ | |
1411 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, | |
1412 | (char *)&toc->hdr, | |
1413 | sizeof(struct atapi_toc_header) + | |
1414 | (ntracks + 1) * | |
1415 | sizeof(struct atapi_toc_entry), sense); | |
1416 | ||
1417 | if (stat && toc->hdr.first_track > 1) { | |
1418 | /* Cds with CDI tracks only don't have any TOC entries, | |
1419 | despite of this the returned values are | |
1420 | first_track == last_track = number of CDI tracks + 1, | |
1421 | so that this case is indistinguishable from the same | |
1422 | layout plus an additional audio track. | |
1423 | If we get an error for the regular case, we assume | |
1424 | a CDI without additional audio tracks. In this case | |
1425 | the readable TOC is empty (CDI tracks are not included) | |
96de0e25 | 1426 | and only holds the Leadout entry. Heiko Eißfeldt */ |
1da177e4 LT |
1427 | ntracks = 0; |
1428 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
1429 | (char *)&toc->hdr, | |
1430 | sizeof(struct atapi_toc_header) + | |
1431 | (ntracks + 1) * | |
1432 | sizeof(struct atapi_toc_entry), | |
1433 | sense); | |
cdf6000d | 1434 | if (stat) |
1da177e4 | 1435 | return stat; |
cdf6000d | 1436 | |
2bc4cf2d | 1437 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1438 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
1439 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); | |
cdf6000d | 1440 | } else { |
1da177e4 LT |
1441 | toc->hdr.first_track = CDROM_LEADOUT; |
1442 | toc->hdr.last_track = CDROM_LEADOUT; | |
1443 | } | |
1444 | } | |
1445 | ||
1446 | if (stat) | |
1447 | return stat; | |
1448 | ||
7eb43fd2 | 1449 | toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length); |
1da177e4 | 1450 | |
2bc4cf2d | 1451 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1452 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1453 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1454 | } |
1da177e4 | 1455 | |
cdf6000d | 1456 | for (i = 0; i <= ntracks; i++) { |
2bc4cf2d BZ |
1457 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1458 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) | |
9a6dc668 | 1459 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
1da177e4 LT |
1460 | msf_from_bcd(&toc->ent[i].addr.msf); |
1461 | } | |
1da177e4 LT |
1462 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, |
1463 | toc->ent[i].addr.msf.second, | |
1464 | toc->ent[i].addr.msf.frame); | |
1465 | } | |
1466 | ||
1467 | /* Read the multisession information. */ | |
1468 | if (toc->hdr.first_track != CDROM_LEADOUT) { | |
1469 | /* Read the multisession information. */ | |
1470 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, | |
1471 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
1472 | if (stat) |
1473 | return stat; | |
1da177e4 LT |
1474 | |
1475 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
1476 | } else { | |
1477 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; | |
1478 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ | |
1479 | } | |
1480 | ||
2bc4cf2d | 1481 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1da177e4 LT |
1482 | /* Re-read multisession information using MSF format */ |
1483 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, | |
1484 | sizeof(ms_tmp), sense); | |
1485 | if (stat) | |
1486 | return stat; | |
1487 | ||
1488 | msf_from_bcd (&ms_tmp.ent.addr.msf); | |
1489 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, | |
1490 | ms_tmp.ent.addr.msf.second, | |
1491 | ms_tmp.ent.addr.msf.frame); | |
1492 | } | |
1da177e4 LT |
1493 | |
1494 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
1495 | ||
1496 | /* Now try to get the total cdrom capacity. */ | |
1497 | stat = cdrom_get_last_written(cdi, &last_written); | |
1498 | if (!stat && (last_written > toc->capacity)) { | |
1499 | toc->capacity = last_written; | |
1500 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 1501 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
1502 | } |
1503 | ||
1504 | /* Remember that we've read this stuff. */ | |
2bc4cf2d | 1505 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
1da177e4 LT |
1506 | |
1507 | return 0; | |
1508 | } | |
1509 | ||
17802998 | 1510 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
9235e68b EP |
1511 | { |
1512 | struct cdrom_info *info = drive->driver_data; | |
1513 | struct cdrom_device_info *cdi = &info->devinfo; | |
1514 | struct packet_command cgc; | |
455d80a9 | 1515 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
9235e68b | 1516 | |
e59724c7 | 1517 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
455d80a9 | 1518 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
9235e68b | 1519 | |
455d80a9 | 1520 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
9235e68b EP |
1521 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
1522 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); | |
1523 | if (!stat) | |
1524 | break; | |
1525 | } while (--attempts); | |
1526 | return stat; | |
1527 | } | |
1528 | ||
17802998 | 1529 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
9235e68b | 1530 | { |
4fe67178 | 1531 | struct cdrom_info *cd = drive->driver_data; |
481c8c64 BZ |
1532 | u16 curspeed, maxspeed; |
1533 | ||
455d80a9 BZ |
1534 | curspeed = *(u16 *)&buf[8 + 14]; |
1535 | maxspeed = *(u16 *)&buf[8 + 8]; | |
1536 | ||
e59724c7 | 1537 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
455d80a9 BZ |
1538 | curspeed = le16_to_cpu(curspeed); |
1539 | maxspeed = le16_to_cpu(maxspeed); | |
9235e68b | 1540 | } else { |
455d80a9 BZ |
1541 | curspeed = be16_to_cpu(curspeed); |
1542 | maxspeed = be16_to_cpu(maxspeed); | |
9235e68b | 1543 | } |
481c8c64 | 1544 | |
2bc4cf2d BZ |
1545 | cd->current_speed = (curspeed + (176/2)) / 176; |
1546 | cd->max_speed = (maxspeed + (176/2)) / 176; | |
9235e68b EP |
1547 | } |
1548 | ||
20e7f7ef BZ |
1549 | #define IDE_CD_CAPABILITIES \ |
1550 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ | |
1551 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ | |
1552 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ | |
1553 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ | |
1554 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) | |
1da177e4 | 1555 | |
1da177e4 LT |
1556 | static struct cdrom_device_ops ide_cdrom_dops = { |
1557 | .open = ide_cdrom_open_real, | |
1558 | .release = ide_cdrom_release_real, | |
1559 | .drive_status = ide_cdrom_drive_status, | |
1560 | .media_changed = ide_cdrom_check_media_change_real, | |
1561 | .tray_move = ide_cdrom_tray_move, | |
1562 | .lock_door = ide_cdrom_lock_door, | |
1563 | .select_speed = ide_cdrom_select_speed, | |
1564 | .get_last_session = ide_cdrom_get_last_session, | |
1565 | .get_mcn = ide_cdrom_get_mcn, | |
1566 | .reset = ide_cdrom_reset, | |
1567 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
20e7f7ef | 1568 | .capability = IDE_CD_CAPABILITIES, |
1da177e4 LT |
1569 | .generic_packet = ide_cdrom_packet, |
1570 | }; | |
1571 | ||
1572 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) | |
1573 | { | |
1574 | struct cdrom_info *info = drive->driver_data; | |
1575 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1576 | ||
1577 | devinfo->ops = &ide_cdrom_dops; | |
2bc4cf2d | 1578 | devinfo->speed = info->current_speed; |
1da177e4 | 1579 | devinfo->capacity = nslots; |
2a91f3e5 | 1580 | devinfo->handle = drive; |
1da177e4 | 1581 | strcpy(devinfo->name, drive->name); |
1da177e4 | 1582 | |
2bc4cf2d | 1583 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
3cbd814e BZ |
1584 | devinfo->mask |= CDC_SELECT_SPEED; |
1585 | ||
1da177e4 LT |
1586 | devinfo->disk = info->disk; |
1587 | return register_cdrom(devinfo); | |
1588 | } | |
1589 | ||
1da177e4 LT |
1590 | static |
1591 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) | |
1592 | { | |
4fe67178 BZ |
1593 | struct cdrom_info *cd = drive->driver_data; |
1594 | struct cdrom_device_info *cdi = &cd->devinfo; | |
455d80a9 BZ |
1595 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
1596 | mechtype_t mechtype; | |
1da177e4 LT |
1597 | int nslots = 1; |
1598 | ||
3f1b86d8 BZ |
1599 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
1600 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | | |
1601 | CDC_MO_DRIVE | CDC_RAM); | |
1602 | ||
1da177e4 | 1603 | if (drive->media == ide_optical) { |
3f1b86d8 | 1604 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
1da177e4 LT |
1605 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
1606 | return nslots; | |
1607 | } | |
1608 | ||
e59724c7 | 1609 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
2bc4cf2d | 1610 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
3f1b86d8 | 1611 | cdi->mask &= ~CDC_PLAY_AUDIO; |
1da177e4 LT |
1612 | return nslots; |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * we have to cheat a little here. the packet will eventually | |
1617 | * be queued with ide_cdrom_packet(), which extracts the | |
1618 | * drive from cdi->handle. Since this device hasn't been | |
1619 | * registered with the Uniform layer yet, it can't do this. | |
1620 | * Same goes for cdi->ops. | |
1621 | */ | |
2a91f3e5 | 1622 | cdi->handle = drive; |
1da177e4 LT |
1623 | cdi->ops = &ide_cdrom_dops; |
1624 | ||
455d80a9 | 1625 | if (ide_cdrom_get_capabilities(drive, buf)) |
1da177e4 LT |
1626 | return 0; |
1627 | ||
455d80a9 | 1628 | if ((buf[8 + 6] & 0x01) == 0) |
2bc4cf2d | 1629 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
455d80a9 | 1630 | if (buf[8 + 6] & 0x08) |
2bc4cf2d | 1631 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
455d80a9 | 1632 | if (buf[8 + 3] & 0x01) |
3f1b86d8 | 1633 | cdi->mask &= ~CDC_CD_R; |
455d80a9 | 1634 | if (buf[8 + 3] & 0x02) |
3f1b86d8 | 1635 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
455d80a9 | 1636 | if (buf[8 + 2] & 0x38) |
3f1b86d8 | 1637 | cdi->mask &= ~CDC_DVD; |
455d80a9 | 1638 | if (buf[8 + 3] & 0x20) |
3f1b86d8 | 1639 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
455d80a9 | 1640 | if (buf[8 + 3] & 0x10) |
3f1b86d8 | 1641 | cdi->mask &= ~CDC_DVD_R; |
e59724c7 | 1642 | if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK)) |
3f1b86d8 | 1643 | cdi->mask &= ~CDC_PLAY_AUDIO; |
455d80a9 BZ |
1644 | |
1645 | mechtype = buf[8 + 6] >> 5; | |
1646 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) | |
3f1b86d8 | 1647 | cdi->mask |= CDC_CLOSE_TRAY; |
1da177e4 | 1648 | |
1da177e4 | 1649 | if (cdi->sanyo_slot > 0) { |
3f1b86d8 | 1650 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 | 1651 | nslots = 3; |
cdf6000d BZ |
1652 | } else if (mechtype == mechtype_individual_changer || |
1653 | mechtype == mechtype_cartridge_changer) { | |
2609d06d BZ |
1654 | nslots = cdrom_number_of_slots(cdi); |
1655 | if (nslots > 1) | |
3f1b86d8 | 1656 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 LT |
1657 | } |
1658 | ||
455d80a9 | 1659 | ide_cdrom_update_speed(drive, buf); |
4fe67178 | 1660 | |
1da177e4 | 1661 | printk(KERN_INFO "%s: ATAPI", drive->name); |
4fe67178 BZ |
1662 | |
1663 | /* don't print speed if the drive reported 0 */ | |
2bc4cf2d BZ |
1664 | if (cd->max_speed) |
1665 | printk(KERN_CONT " %dX", cd->max_speed); | |
4fe67178 | 1666 | |
3f1b86d8 | 1667 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
1da177e4 | 1668 | |
3f1b86d8 BZ |
1669 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
1670 | printk(KERN_CONT " DVD%s%s", | |
1671 | (cdi->mask & CDC_DVD_R) ? "" : "-R", | |
1672 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); | |
1da177e4 | 1673 | |
3f1b86d8 BZ |
1674 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
1675 | printk(KERN_CONT " CD%s%s", | |
1676 | (cdi->mask & CDC_CD_R) ? "" : "-R", | |
1677 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); | |
1da177e4 | 1678 | |
3f1b86d8 BZ |
1679 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
1680 | printk(KERN_CONT " changer w/%d slots", nslots); | |
1681 | else | |
1682 | printk(KERN_CONT " drive"); | |
1da177e4 | 1683 | |
455d80a9 | 1684 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12])); |
1da177e4 LT |
1685 | |
1686 | return nslots; | |
1687 | } | |
1688 | ||
7662d046 | 1689 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1690 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
1691 | { | |
1497943e | 1692 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
1da177e4 | 1693 | } |
7662d046 BZ |
1694 | #else |
1695 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } | |
1696 | #endif | |
1da177e4 LT |
1697 | |
1698 | /* | |
1699 | * standard prep_rq_fn that builds 10 byte cmds | |
1700 | */ | |
165125e1 | 1701 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
1702 | { |
1703 | int hard_sect = queue_hardsect_size(q); | |
1704 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
1705 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
1706 | ||
1707 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
1708 | ||
1709 | if (rq_data_dir(rq) == READ) | |
1710 | rq->cmd[0] = GPCMD_READ_10; | |
1711 | else | |
1712 | rq->cmd[0] = GPCMD_WRITE_10; | |
1713 | ||
1714 | /* | |
1715 | * fill in lba | |
1716 | */ | |
1717 | rq->cmd[2] = (block >> 24) & 0xff; | |
1718 | rq->cmd[3] = (block >> 16) & 0xff; | |
1719 | rq->cmd[4] = (block >> 8) & 0xff; | |
1720 | rq->cmd[5] = block & 0xff; | |
1721 | ||
1722 | /* | |
1723 | * and transfer length | |
1724 | */ | |
1725 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
1726 | rq->cmd[8] = blocks & 0xff; | |
1727 | rq->cmd_len = 10; | |
1728 | return BLKPREP_OK; | |
1729 | } | |
1730 | ||
1731 | /* | |
1732 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
1733 | * This transform handles the few exceptions. | |
1734 | */ | |
1735 | static int ide_cdrom_prep_pc(struct request *rq) | |
1736 | { | |
1737 | u8 *c = rq->cmd; | |
1738 | ||
1739 | /* | |
1740 | * Transform 6-byte read/write commands to the 10-byte version | |
1741 | */ | |
1742 | if (c[0] == READ_6 || c[0] == WRITE_6) { | |
1743 | c[8] = c[4]; | |
1744 | c[5] = c[3]; | |
1745 | c[4] = c[2]; | |
1746 | c[3] = c[1] & 0x1f; | |
1747 | c[2] = 0; | |
1748 | c[1] &= 0xe0; | |
1749 | c[0] += (READ_10 - READ_6); | |
1750 | rq->cmd_len = 10; | |
1751 | return BLKPREP_OK; | |
1752 | } | |
1753 | ||
1754 | /* | |
1755 | * it's silly to pretend we understand 6-byte sense commands, just | |
1756 | * reject with ILLEGAL_REQUEST and the caller should take the | |
1757 | * appropriate action | |
1758 | */ | |
1759 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
1760 | rq->errors = ILLEGAL_REQUEST; | |
1761 | return BLKPREP_KILL; | |
1762 | } | |
1763 | ||
1764 | return BLKPREP_OK; | |
1765 | } | |
1766 | ||
165125e1 | 1767 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 1768 | { |
4aff5e23 | 1769 | if (blk_fs_request(rq)) |
1da177e4 | 1770 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 1771 | else if (blk_pc_request(rq)) |
1da177e4 LT |
1772 | return ide_cdrom_prep_pc(rq); |
1773 | ||
1774 | return 0; | |
1775 | } | |
1776 | ||
e59724c7 BZ |
1777 | struct cd_list_entry { |
1778 | const char *id_model; | |
1779 | const char *id_firmware; | |
1780 | unsigned int cd_flags; | |
1781 | }; | |
1782 | ||
1783 | static const struct cd_list_entry ide_cd_quirks_list[] = { | |
1784 | /* Limit transfer size per interrupt. */ | |
1785 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
1786 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
1787 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ | |
1788 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, | |
1789 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ | |
1790 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | | |
1791 | IDE_CD_FLAG_PRE_ATAPI12, }, | |
1792 | /* Vertos 300, some versions of this drive like to talk BCD. */ | |
1793 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, | |
1794 | /* Vertos 600 ESD. */ | |
1795 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, | |
1796 | /* | |
1797 | * Sanyo 3 CD changer uses a non-standard command for CD changing | |
1798 | * (by default standard ATAPI support for CD changers is used). | |
1799 | */ | |
1800 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1801 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1802 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
1803 | /* Stingray 8X CD-ROM. */ | |
1804 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, | |
1805 | /* | |
1806 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length | |
1807 | * mode sense page capabilities size, but older drives break. | |
1808 | */ | |
1809 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
1810 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
1811 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ | |
1812 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, | |
1813 | /* | |
1814 | * Some drives used by Apple don't advertise audio play | |
1815 | * but they do support reading TOC & audio datas. | |
1816 | */ | |
1817 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1818 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1819 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
1820 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
acbe44e6 | 1821 | { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
e59724c7 BZ |
1822 | { NULL, NULL, 0 } |
1823 | }; | |
1824 | ||
1825 | static unsigned int ide_cd_flags(struct hd_driveid *id) | |
1826 | { | |
1827 | const struct cd_list_entry *cle = ide_cd_quirks_list; | |
1828 | ||
1829 | while (cle->id_model) { | |
1830 | if (strcmp(cle->id_model, id->model) == 0 && | |
1831 | (cle->id_firmware == NULL || | |
1832 | strstr(id->fw_rev, cle->id_firmware))) | |
1833 | return cle->cd_flags; | |
1834 | cle++; | |
1835 | } | |
1836 | ||
1837 | return 0; | |
1838 | } | |
1839 | ||
1da177e4 LT |
1840 | static |
1841 | int ide_cdrom_setup (ide_drive_t *drive) | |
1842 | { | |
4fe67178 BZ |
1843 | struct cdrom_info *cd = drive->driver_data; |
1844 | struct cdrom_device_info *cdi = &cd->devinfo; | |
e59724c7 | 1845 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
1846 | int nslots; |
1847 | ||
1848 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); | |
1849 | blk_queue_dma_alignment(drive->queue, 31); | |
1850 | drive->queue->unplug_delay = (1 * HZ) / 1000; | |
1851 | if (!drive->queue->unplug_delay) | |
1852 | drive->queue->unplug_delay = 1; | |
1853 | ||
1854 | drive->special.all = 0; | |
1855 | ||
e59724c7 BZ |
1856 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
1857 | ide_cd_flags(id); | |
1da177e4 | 1858 | |
e59724c7 | 1859 | if ((id->config & 0x0060) == 0x20) |
2bc4cf2d | 1860 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
e59724c7 BZ |
1861 | |
1862 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && | |
1863 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d BZ |
1864 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
1865 | IDE_CD_FLAG_TOCADDR_AS_BCD); | |
e59724c7 BZ |
1866 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
1867 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d | 1868 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
e59724c7 BZ |
1869 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
1870 | cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */ | |
1da177e4 | 1871 | |
1da177e4 LT |
1872 | nslots = ide_cdrom_probe_capabilities (drive); |
1873 | ||
1874 | /* | |
1875 | * set correct block size | |
1876 | */ | |
1877 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); | |
1878 | ||
1879 | if (drive->autotune == IDE_TUNE_DEFAULT || | |
1880 | drive->autotune == IDE_TUNE_AUTO) | |
1881 | drive->dsc_overlap = (drive->next != drive); | |
1da177e4 LT |
1882 | |
1883 | if (ide_cdrom_register(drive, nslots)) { | |
1884 | printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); | |
4fe67178 | 1885 | cd->devinfo.handle = NULL; |
1da177e4 LT |
1886 | return 1; |
1887 | } | |
1888 | ide_cdrom_add_settings(drive); | |
1889 | return 0; | |
1890 | } | |
1891 | ||
ecfd80e4 | 1892 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1893 | static |
1894 | sector_t ide_cdrom_capacity (ide_drive_t *drive) | |
1895 | { | |
1896 | unsigned long capacity, sectors_per_frame; | |
1897 | ||
1898 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
1899 | return 0; | |
1900 | ||
1901 | return capacity * sectors_per_frame; | |
1902 | } | |
d97b3214 | 1903 | #endif |
1da177e4 | 1904 | |
4031bbe4 | 1905 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
1906 | { |
1907 | struct cdrom_info *info = drive->driver_data; | |
1908 | ||
7662d046 | 1909 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
1910 | |
1911 | del_gendisk(info->disk); | |
1912 | ||
1913 | ide_cd_put(info); | |
1da177e4 LT |
1914 | } |
1915 | ||
1916 | static void ide_cd_release(struct kref *kref) | |
1917 | { | |
1918 | struct cdrom_info *info = to_ide_cd(kref); | |
1919 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1920 | ide_drive_t *drive = info->drive; | |
1921 | struct gendisk *g = info->disk; | |
1922 | ||
6044ec88 | 1923 | kfree(info->toc); |
0a0c4114 AM |
1924 | if (devinfo->handle == drive) |
1925 | unregister_cdrom(devinfo); | |
1da177e4 LT |
1926 | drive->dsc_overlap = 0; |
1927 | drive->driver_data = NULL; | |
1928 | blk_queue_prep_rq(drive->queue, NULL); | |
1929 | g->private_data = NULL; | |
1930 | put_disk(g); | |
1931 | kfree(info); | |
1932 | } | |
1933 | ||
4031bbe4 | 1934 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 1935 | |
ecfd80e4 | 1936 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
1937 | static int proc_idecd_read_capacity |
1938 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
1939 | { | |
2a91f3e5 | 1940 | ide_drive_t *drive = data; |
1da177e4 LT |
1941 | int len; |
1942 | ||
1943 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); | |
1944 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
1945 | } | |
1946 | ||
1947 | static ide_proc_entry_t idecd_proc[] = { | |
1948 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
1949 | { NULL, 0, NULL, NULL } | |
1950 | }; | |
1da177e4 LT |
1951 | #endif |
1952 | ||
1953 | static ide_driver_t ide_cdrom_driver = { | |
8604affd | 1954 | .gen_driver = { |
4ef3b8f4 | 1955 | .owner = THIS_MODULE, |
8604affd BZ |
1956 | .name = "ide-cdrom", |
1957 | .bus = &ide_bus_type, | |
8604affd | 1958 | }, |
4031bbe4 RK |
1959 | .probe = ide_cd_probe, |
1960 | .remove = ide_cd_remove, | |
1da177e4 LT |
1961 | .version = IDECD_VERSION, |
1962 | .media = ide_cdrom, | |
1da177e4 | 1963 | .supports_dsc_overlap = 1, |
1da177e4 LT |
1964 | .do_request = ide_do_rw_cdrom, |
1965 | .end_request = ide_end_request, | |
1966 | .error = __ide_error, | |
1967 | .abort = __ide_abort, | |
7662d046 | 1968 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 1969 | .proc = idecd_proc, |
7662d046 | 1970 | #endif |
1da177e4 LT |
1971 | }; |
1972 | ||
1973 | static int idecd_open(struct inode * inode, struct file * file) | |
1974 | { | |
1975 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1976 | struct cdrom_info *info; | |
1da177e4 LT |
1977 | int rc = -ENOMEM; |
1978 | ||
1979 | if (!(info = ide_cd_get(disk))) | |
1980 | return -ENXIO; | |
1981 | ||
968c4964 | 1982 | rc = cdrom_open(&info->devinfo, inode, file); |
1da177e4 LT |
1983 | |
1984 | if (rc < 0) | |
1985 | ide_cd_put(info); | |
1986 | ||
1987 | return rc; | |
1988 | } | |
1989 | ||
1990 | static int idecd_release(struct inode * inode, struct file * file) | |
1991 | { | |
1992 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
1993 | struct cdrom_info *info = ide_cd_g(disk); | |
1da177e4 LT |
1994 | |
1995 | cdrom_release (&info->devinfo, file); | |
1da177e4 LT |
1996 | |
1997 | ide_cd_put(info); | |
1998 | ||
1999 | return 0; | |
2000 | } | |
2001 | ||
6a2900b6 CH |
2002 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
2003 | { | |
2004 | struct packet_command cgc; | |
2005 | char buffer[16]; | |
2006 | int stat; | |
2007 | char spindown; | |
2008 | ||
2009 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
2010 | return -EFAULT; | |
2011 | ||
2012 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2013 | ||
2014 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2015 | if (stat) | |
2016 | return stat; | |
2017 | ||
2018 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
2019 | return cdrom_mode_select(cdi, &cgc); | |
2020 | } | |
2021 | ||
2022 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
2023 | { | |
2024 | struct packet_command cgc; | |
2025 | char buffer[16]; | |
2026 | int stat; | |
2027 | char spindown; | |
2028 | ||
2029 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2030 | ||
2031 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2032 | if (stat) | |
2033 | return stat; | |
2034 | ||
2035 | spindown = buffer[11] & 0x0f; | |
2036 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) | |
2037 | return -EFAULT; | |
2038 | return 0; | |
2039 | } | |
2040 | ||
1da177e4 LT |
2041 | static int idecd_ioctl (struct inode *inode, struct file *file, |
2042 | unsigned int cmd, unsigned long arg) | |
2043 | { | |
2044 | struct block_device *bdev = inode->i_bdev; | |
2045 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); | |
2046 | int err; | |
2047 | ||
6a2900b6 CH |
2048 | switch (cmd) { |
2049 | case CDROMSETSPINDOWN: | |
2050 | return idecd_set_spindown(&info->devinfo, arg); | |
2051 | case CDROMGETSPINDOWN: | |
2052 | return idecd_get_spindown(&info->devinfo, arg); | |
2053 | default: | |
2054 | break; | |
2055 | } | |
2056 | ||
2057 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); | |
1da177e4 LT |
2058 | if (err == -EINVAL) |
2059 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); | |
2060 | ||
2061 | return err; | |
2062 | } | |
2063 | ||
2064 | static int idecd_media_changed(struct gendisk *disk) | |
2065 | { | |
2066 | struct cdrom_info *info = ide_cd_g(disk); | |
2067 | return cdrom_media_changed(&info->devinfo); | |
2068 | } | |
2069 | ||
2070 | static int idecd_revalidate_disk(struct gendisk *disk) | |
2071 | { | |
2072 | struct cdrom_info *info = ide_cd_g(disk); | |
2073 | struct request_sense sense; | |
139c829d BZ |
2074 | |
2075 | ide_cd_read_toc(info->drive, &sense); | |
2076 | ||
1da177e4 LT |
2077 | return 0; |
2078 | } | |
2079 | ||
2080 | static struct block_device_operations idecd_ops = { | |
2081 | .owner = THIS_MODULE, | |
2082 | .open = idecd_open, | |
2083 | .release = idecd_release, | |
2084 | .ioctl = idecd_ioctl, | |
2085 | .media_changed = idecd_media_changed, | |
2086 | .revalidate_disk= idecd_revalidate_disk | |
2087 | }; | |
2088 | ||
2089 | /* options */ | |
2090 | static char *ignore = NULL; | |
2091 | ||
2092 | module_param(ignore, charp, 0400); | |
2093 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); | |
2094 | ||
4031bbe4 | 2095 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
2096 | { |
2097 | struct cdrom_info *info; | |
2098 | struct gendisk *g; | |
2099 | struct request_sense sense; | |
2100 | ||
2101 | if (!strstr("ide-cdrom", drive->driver_req)) | |
2102 | goto failed; | |
2103 | if (!drive->present) | |
2104 | goto failed; | |
2105 | if (drive->media != ide_cdrom && drive->media != ide_optical) | |
2106 | goto failed; | |
2107 | /* skip drives that we were told to ignore */ | |
2108 | if (ignore != NULL) { | |
2109 | if (strstr(ignore, drive->name)) { | |
2110 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); | |
2111 | goto failed; | |
2112 | } | |
2113 | } | |
2114 | if (drive->scsi) { | |
2115 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); | |
2116 | goto failed; | |
2117 | } | |
f5e3c2fa | 2118 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 LT |
2119 | if (info == NULL) { |
2120 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); | |
2121 | goto failed; | |
2122 | } | |
2123 | ||
2124 | g = alloc_disk(1 << PARTN_BITS); | |
2125 | if (!g) | |
2126 | goto out_free_cd; | |
2127 | ||
2128 | ide_init_disk(g, drive); | |
2129 | ||
7662d046 | 2130 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
8604affd | 2131 | |
1da177e4 LT |
2132 | kref_init(&info->kref); |
2133 | ||
2134 | info->drive = drive; | |
2135 | info->driver = &ide_cdrom_driver; | |
2136 | info->disk = g; | |
2137 | ||
2138 | g->private_data = &info->driver; | |
2139 | ||
2140 | drive->driver_data = info; | |
2141 | ||
1da177e4 | 2142 | g->minors = 1; |
1da177e4 LT |
2143 | g->driverfs_dev = &drive->gendev; |
2144 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
2145 | if (ide_cdrom_setup(drive)) { | |
7662d046 | 2146 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
05017db3 | 2147 | ide_cd_release(&info->kref); |
1da177e4 LT |
2148 | goto failed; |
2149 | } | |
1da177e4 | 2150 | |
139c829d | 2151 | ide_cd_read_toc(drive, &sense); |
1da177e4 LT |
2152 | g->fops = &idecd_ops; |
2153 | g->flags |= GENHD_FL_REMOVABLE; | |
2154 | add_disk(g); | |
2155 | return 0; | |
2156 | ||
1da177e4 LT |
2157 | out_free_cd: |
2158 | kfree(info); | |
2159 | failed: | |
8604affd | 2160 | return -ENODEV; |
1da177e4 LT |
2161 | } |
2162 | ||
2163 | static void __exit ide_cdrom_exit(void) | |
2164 | { | |
8604affd | 2165 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 2166 | } |
17514e8a BZ |
2167 | |
2168 | static int __init ide_cdrom_init(void) | |
1da177e4 | 2169 | { |
8604affd | 2170 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
2171 | } |
2172 | ||
263756ec | 2173 | MODULE_ALIAS("ide:*m-cdrom*"); |
972560fb | 2174 | MODULE_ALIAS("ide-cd"); |
1da177e4 LT |
2175 | module_init(ide_cdrom_init); |
2176 | module_exit(ide_cdrom_exit); | |
2177 | MODULE_LICENSE("GPL"); |