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1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/ide-cd.c | |
3 | * | |
4 | * Copyright (C) 1994, 1995, 1996 scott snyder <snyder@fnald0.fnal.gov> | |
5 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> | |
6 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> | |
7 | * | |
8 | * May be copied or modified under the terms of the GNU General Public | |
9 | * License. See linux/COPYING for more information. | |
10 | * | |
11 | * ATAPI CD-ROM driver. To be used with ide.c. | |
12 | * See Documentation/cdrom/ide-cd for usage information. | |
13 | * | |
14 | * Suggestions are welcome. Patches that work are more welcome though. ;-) | |
15 | * For those wishing to work on this driver, please be sure you download | |
16 | * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI | |
17 | * (SFF-8020i rev 2.6) standards. These documents can be obtained by | |
18 | * anonymous ftp from: | |
19 | * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps | |
20 | * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf | |
21 | * | |
22 | * Drives that deviate from these standards will be accommodated as much | |
23 | * as possible via compile time or command-line options. Since I only have | |
24 | * a few drives, you generally need to send me patches... | |
25 | * | |
26 | * ---------------------------------- | |
27 | * TO DO LIST: | |
28 | * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on | |
29 | * boot | |
30 | * | |
03553353 BZ |
31 | * For historical changelog please see: |
32 | * Documentation/ide/ChangeLog.ide-cd.1994-2004 | |
33 | */ | |
34 | ||
1da177e4 LT |
35 | #define IDECD_VERSION "4.61" |
36 | ||
1da177e4 LT |
37 | #include <linux/module.h> |
38 | #include <linux/types.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/timer.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/interrupt.h> | |
44 | #include <linux/errno.h> | |
45 | #include <linux/cdrom.h> | |
46 | #include <linux/ide.h> | |
47 | #include <linux/completion.h> | |
cf8b8975 | 48 | #include <linux/mutex.h> |
9a6dc668 | 49 | #include <linux/bcd.h> |
1da177e4 LT |
50 | |
51 | #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */ | |
52 | ||
53 | #include <asm/irq.h> | |
54 | #include <asm/io.h> | |
55 | #include <asm/byteorder.h> | |
56 | #include <asm/uaccess.h> | |
57 | #include <asm/unaligned.h> | |
58 | ||
59 | #include "ide-cd.h" | |
60 | ||
cf8b8975 | 61 | static DEFINE_MUTEX(idecd_ref_mutex); |
1da177e4 LT |
62 | |
63 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) | |
64 | ||
65 | #define ide_cd_g(disk) \ | |
66 | container_of((disk)->private_data, struct cdrom_info, driver) | |
67 | ||
68 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) | |
69 | { | |
70 | struct cdrom_info *cd = NULL; | |
71 | ||
cf8b8975 | 72 | mutex_lock(&idecd_ref_mutex); |
1da177e4 LT |
73 | cd = ide_cd_g(disk); |
74 | if (cd) | |
75 | kref_get(&cd->kref); | |
cf8b8975 | 76 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
77 | return cd; |
78 | } | |
79 | ||
80 | static void ide_cd_release(struct kref *); | |
81 | ||
82 | static void ide_cd_put(struct cdrom_info *cd) | |
83 | { | |
cf8b8975 | 84 | mutex_lock(&idecd_ref_mutex); |
1da177e4 | 85 | kref_put(&cd->kref, ide_cd_release); |
cf8b8975 | 86 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
87 | } |
88 | ||
89 | /**************************************************************************** | |
90 | * Generic packet command support and error handling routines. | |
91 | */ | |
92 | ||
93 | /* Mark that we've seen a media change, and invalidate our internal | |
94 | buffers. */ | |
95 | static void cdrom_saw_media_change (ide_drive_t *drive) | |
96 | { | |
0ba11211 BZ |
97 | struct cdrom_info *cd = drive->driver_data; |
98 | ||
2bc4cf2d BZ |
99 | cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED; |
100 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; | |
0ba11211 | 101 | cd->nsectors_buffered = 0; |
1da177e4 LT |
102 | } |
103 | ||
104 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, | |
105 | struct request_sense *sense) | |
106 | { | |
107 | int log = 0; | |
108 | ||
4aff5e23 | 109 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
110 | return 0; |
111 | ||
112 | switch (sense->sense_key) { | |
113 | case NO_SENSE: case RECOVERED_ERROR: | |
114 | break; | |
115 | case NOT_READY: | |
116 | /* | |
117 | * don't care about tray state messages for | |
118 | * e.g. capacity commands or in-progress or | |
119 | * becoming ready | |
120 | */ | |
121 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
122 | break; | |
123 | log = 1; | |
124 | break; | |
125 | case ILLEGAL_REQUEST: | |
126 | /* | |
127 | * don't log START_STOP unit with LoEj set, since | |
128 | * we cannot reliably check if drive can auto-close | |
129 | */ | |
130 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
dbe217af AC |
131 | break; |
132 | log = 1; | |
1da177e4 LT |
133 | break; |
134 | case UNIT_ATTENTION: | |
135 | /* | |
136 | * Make good and sure we've seen this potential media | |
137 | * change. Some drives (i.e. Creative) fail to present | |
138 | * the correct sense key in the error register. | |
139 | */ | |
140 | cdrom_saw_media_change(drive); | |
141 | break; | |
142 | default: | |
143 | log = 1; | |
144 | break; | |
145 | } | |
146 | return log; | |
147 | } | |
148 | ||
149 | static | |
150 | void cdrom_analyze_sense_data(ide_drive_t *drive, | |
151 | struct request *failed_command, | |
152 | struct request_sense *sense) | |
153 | { | |
dbe217af AC |
154 | unsigned long sector; |
155 | unsigned long bio_sectors; | |
156 | unsigned long valid; | |
157 | struct cdrom_info *info = drive->driver_data; | |
158 | ||
1da177e4 LT |
159 | if (!cdrom_log_sense(drive, failed_command, sense)) |
160 | return; | |
161 | ||
162 | /* | |
163 | * If a read toc is executed for a CD-R or CD-RW medium where | |
164 | * the first toc has not been recorded yet, it will fail with | |
165 | * 05/24/00 (which is a confusing error) | |
166 | */ | |
167 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
168 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
169 | return; | |
170 | ||
dbe217af AC |
171 | if (sense->error_code == 0x70) { /* Current Error */ |
172 | switch(sense->sense_key) { | |
173 | case MEDIUM_ERROR: | |
174 | case VOLUME_OVERFLOW: | |
175 | case ILLEGAL_REQUEST: | |
176 | if (!sense->valid) | |
177 | break; | |
178 | if (failed_command == NULL || | |
179 | !blk_fs_request(failed_command)) | |
180 | break; | |
181 | sector = (sense->information[0] << 24) | | |
182 | (sense->information[1] << 16) | | |
183 | (sense->information[2] << 8) | | |
184 | (sense->information[3]); | |
185 | ||
186 | bio_sectors = bio_sectors(failed_command->bio); | |
187 | if (bio_sectors < 4) | |
188 | bio_sectors = 4; | |
189 | if (drive->queue->hardsect_size == 2048) | |
190 | sector <<= 2; /* Device sector size is 2K */ | |
191 | sector &= ~(bio_sectors -1); | |
192 | valid = (sector - failed_command->sector) << 9; | |
193 | ||
194 | if (valid < 0) | |
195 | valid = 0; | |
196 | if (sector < get_capacity(info->disk) && | |
197 | drive->probed_capacity - sector < 4 * 75) { | |
198 | set_capacity(info->disk, sector); | |
199 | } | |
200 | } | |
201 | } | |
1da177e4 | 202 | |
972560fb | 203 | ide_cd_log_error(drive->name, failed_command, sense); |
1da177e4 LT |
204 | } |
205 | ||
206 | /* | |
207 | * Initialize a ide-cd packet command request | |
208 | */ | |
209 | static void cdrom_prepare_request(ide_drive_t *drive, struct request *rq) | |
210 | { | |
211 | struct cdrom_info *cd = drive->driver_data; | |
212 | ||
213 | ide_init_drive_cmd(rq); | |
cea2885a | 214 | rq->cmd_type = REQ_TYPE_ATA_PC; |
1da177e4 LT |
215 | rq->rq_disk = cd->disk; |
216 | } | |
217 | ||
218 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, | |
219 | struct request *failed_command) | |
220 | { | |
221 | struct cdrom_info *info = drive->driver_data; | |
222 | struct request *rq = &info->request_sense_request; | |
223 | ||
224 | if (sense == NULL) | |
225 | sense = &info->sense_data; | |
226 | ||
227 | /* stuff the sense request in front of our current request */ | |
228 | cdrom_prepare_request(drive, rq); | |
229 | ||
230 | rq->data = sense; | |
231 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
232 | rq->cmd[4] = rq->data_len = 18; | |
233 | ||
4aff5e23 | 234 | rq->cmd_type = REQ_TYPE_SENSE; |
1da177e4 LT |
235 | |
236 | /* NOTE! Save the failed command in "rq->buffer" */ | |
237 | rq->buffer = (void *) failed_command; | |
238 | ||
239 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
240 | } | |
241 | ||
242 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) | |
243 | { | |
244 | struct request *rq = HWGROUP(drive)->rq; | |
245 | int nsectors = rq->hard_cur_sectors; | |
246 | ||
4aff5e23 | 247 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 248 | /* |
4aff5e23 JA |
249 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
250 | * failed request | |
1da177e4 LT |
251 | */ |
252 | struct request *failed = (struct request *) rq->buffer; | |
253 | struct cdrom_info *info = drive->driver_data; | |
254 | void *sense = &info->sense_data; | |
255 | unsigned long flags; | |
256 | ||
257 | if (failed) { | |
258 | if (failed->sense) { | |
259 | sense = failed->sense; | |
260 | failed->sense_len = rq->sense_len; | |
261 | } | |
dbe217af | 262 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 LT |
263 | /* |
264 | * now end failed request | |
265 | */ | |
dbe217af AC |
266 | if (blk_fs_request(failed)) { |
267 | if (ide_end_dequeued_request(drive, failed, 0, | |
268 | failed->hard_nr_sectors)) | |
269 | BUG(); | |
270 | } else { | |
271 | spin_lock_irqsave(&ide_lock, flags); | |
5e36bb6e KU |
272 | if (__blk_end_request(failed, -EIO, |
273 | failed->data_len)) | |
274 | BUG(); | |
dbe217af AC |
275 | spin_unlock_irqrestore(&ide_lock, flags); |
276 | } | |
277 | } else | |
278 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
279 | } |
280 | ||
281 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
282 | uptodate = 1; | |
283 | /* make sure it's fully ended */ | |
284 | if (blk_pc_request(rq)) | |
285 | nsectors = (rq->data_len + 511) >> 9; | |
286 | if (!nsectors) | |
287 | nsectors = 1; | |
288 | ||
289 | ide_end_request(drive, uptodate, nsectors); | |
290 | } | |
291 | ||
dbe217af AC |
292 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
293 | { | |
294 | if (stat & 0x80) | |
295 | return; | |
296 | ide_dump_status(drive, msg, stat); | |
297 | } | |
298 | ||
1da177e4 LT |
299 | /* Returns 0 if the request should be continued. |
300 | Returns 1 if the request was ended. */ | |
301 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) | |
302 | { | |
303 | struct request *rq = HWGROUP(drive)->rq; | |
304 | int stat, err, sense_key; | |
305 | ||
306 | /* Check for errors. */ | |
307 | stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
308 | if (stat_ret) | |
309 | *stat_ret = stat; | |
310 | ||
311 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
312 | return 0; | |
313 | ||
314 | /* Get the IDE error register. */ | |
315 | err = HWIF(drive)->INB(IDE_ERROR_REG); | |
316 | sense_key = err >> 4; | |
317 | ||
318 | if (rq == NULL) { | |
319 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); | |
320 | return 1; | |
321 | } | |
322 | ||
4aff5e23 | 323 | if (blk_sense_request(rq)) { |
1da177e4 LT |
324 | /* We got an error trying to get sense info |
325 | from the drive (probably while trying | |
326 | to recover from a former error). Just give up. */ | |
327 | ||
4aff5e23 | 328 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
329 | cdrom_end_request(drive, 0); |
330 | ide_error(drive, "request sense failure", stat); | |
331 | return 1; | |
332 | ||
8770c018 | 333 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 LT |
334 | /* All other functions, except for READ. */ |
335 | unsigned long flags; | |
336 | ||
337 | /* | |
338 | * if we have an error, pass back CHECK_CONDITION as the | |
339 | * scsi status byte | |
340 | */ | |
b7156731 | 341 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
342 | rq->errors = SAM_STAT_CHECK_CONDITION; |
343 | ||
344 | /* Check for tray open. */ | |
345 | if (sense_key == NOT_READY) { | |
346 | cdrom_saw_media_change (drive); | |
347 | } else if (sense_key == UNIT_ATTENTION) { | |
348 | /* Check for media change. */ | |
349 | cdrom_saw_media_change (drive); | |
350 | /*printk("%s: media changed\n",drive->name);*/ | |
351 | return 0; | |
76ca1af1 SH |
352 | } else if ((sense_key == ILLEGAL_REQUEST) && |
353 | (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { | |
354 | /* | |
355 | * Don't print error message for this condition-- | |
356 | * SFF8090i indicates that 5/24/00 is the correct | |
357 | * response to a request to close the tray if the | |
358 | * drive doesn't have that capability. | |
359 | * cdrom_log_sense() knows this! | |
360 | */ | |
4aff5e23 | 361 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
1da177e4 LT |
362 | /* Otherwise, print an error. */ |
363 | ide_dump_status(drive, "packet command error", stat); | |
364 | } | |
365 | ||
4aff5e23 | 366 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
367 | |
368 | /* | |
369 | * instead of playing games with moving completions around, | |
370 | * remove failed request completely and end it when the | |
371 | * request sense has completed | |
372 | */ | |
373 | if (stat & ERR_STAT) { | |
374 | spin_lock_irqsave(&ide_lock, flags); | |
375 | blkdev_dequeue_request(rq); | |
376 | HWGROUP(drive)->rq = NULL; | |
377 | spin_unlock_irqrestore(&ide_lock, flags); | |
378 | ||
379 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
380 | } else | |
381 | cdrom_end_request(drive, 0); | |
382 | ||
383 | } else if (blk_fs_request(rq)) { | |
384 | int do_end_request = 0; | |
385 | ||
386 | /* Handle errors from READ and WRITE requests. */ | |
387 | ||
388 | if (blk_noretry_request(rq)) | |
389 | do_end_request = 1; | |
390 | ||
391 | if (sense_key == NOT_READY) { | |
392 | /* Tray open. */ | |
393 | if (rq_data_dir(rq) == READ) { | |
394 | cdrom_saw_media_change (drive); | |
395 | ||
396 | /* Fail the request. */ | |
397 | printk ("%s: tray open\n", drive->name); | |
398 | do_end_request = 1; | |
399 | } else { | |
400 | struct cdrom_info *info = drive->driver_data; | |
401 | ||
402 | /* allow the drive 5 seconds to recover, some | |
403 | * devices will return this error while flushing | |
404 | * data from cache */ | |
405 | if (!rq->errors) | |
406 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; | |
407 | rq->errors = 1; | |
408 | if (time_after(jiffies, info->write_timeout)) | |
409 | do_end_request = 1; | |
410 | else { | |
411 | unsigned long flags; | |
412 | ||
413 | /* | |
414 | * take a breather relying on the | |
415 | * unplug timer to kick us again | |
416 | */ | |
417 | spin_lock_irqsave(&ide_lock, flags); | |
418 | blk_plug_device(drive->queue); | |
419 | spin_unlock_irqrestore(&ide_lock,flags); | |
420 | return 1; | |
421 | } | |
422 | } | |
423 | } else if (sense_key == UNIT_ATTENTION) { | |
424 | /* Media change. */ | |
425 | cdrom_saw_media_change (drive); | |
426 | ||
427 | /* Arrange to retry the request. | |
428 | But be sure to give up if we've retried | |
429 | too many times. */ | |
430 | if (++rq->errors > ERROR_MAX) | |
431 | do_end_request = 1; | |
432 | } else if (sense_key == ILLEGAL_REQUEST || | |
433 | sense_key == DATA_PROTECT) { | |
434 | /* No point in retrying after an illegal | |
435 | request or data protect error.*/ | |
dbe217af | 436 | ide_dump_status_no_sense (drive, "command error", stat); |
1da177e4 LT |
437 | do_end_request = 1; |
438 | } else if (sense_key == MEDIUM_ERROR) { | |
439 | /* No point in re-trying a zillion times on a bad | |
440 | * sector... If we got here the error is not correctable */ | |
dbe217af | 441 | ide_dump_status_no_sense (drive, "media error (bad sector)", stat); |
1da177e4 LT |
442 | do_end_request = 1; |
443 | } else if (sense_key == BLANK_CHECK) { | |
444 | /* Disk appears blank ?? */ | |
dbe217af | 445 | ide_dump_status_no_sense (drive, "media error (blank)", stat); |
1da177e4 LT |
446 | do_end_request = 1; |
447 | } else if ((err & ~ABRT_ERR) != 0) { | |
448 | /* Go to the default handler | |
449 | for other errors. */ | |
450 | ide_error(drive, "cdrom_decode_status", stat); | |
451 | return 1; | |
452 | } else if ((++rq->errors > ERROR_MAX)) { | |
453 | /* We've racked up too many retries. Abort. */ | |
454 | do_end_request = 1; | |
455 | } | |
456 | ||
dbe217af AC |
457 | /* End a request through request sense analysis when we have |
458 | sense data. We need this in order to perform end of media | |
459 | processing */ | |
460 | ||
461 | if (do_end_request) { | |
462 | if (stat & ERR_STAT) { | |
463 | unsigned long flags; | |
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 | } else { | |
473 | /* If we got a CHECK_CONDITION status, | |
474 | queue a request sense command. */ | |
475 | if (stat & ERR_STAT) | |
476 | cdrom_queue_request_sense(drive, NULL, NULL); | |
477 | } | |
1da177e4 LT |
478 | } else { |
479 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); | |
480 | cdrom_end_request(drive, 0); | |
481 | } | |
482 | ||
483 | /* Retry, or handle the next request. */ | |
484 | return 1; | |
485 | } | |
486 | ||
487 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
488 | { | |
489 | struct request *rq = HWGROUP(drive)->rq; | |
490 | unsigned long wait = 0; | |
491 | ||
492 | /* | |
493 | * Some commands are *slow* and normally take a long time to | |
494 | * complete. Usually we can use the ATAPI "disconnect" to bypass | |
495 | * this, but not all commands/drives support that. Let | |
496 | * ide_timer_expiry keep polling us for these. | |
497 | */ | |
498 | switch (rq->cmd[0]) { | |
499 | case GPCMD_BLANK: | |
500 | case GPCMD_FORMAT_UNIT: | |
501 | case GPCMD_RESERVE_RZONE_TRACK: | |
502 | case GPCMD_CLOSE_TRACK: | |
503 | case GPCMD_FLUSH_CACHE: | |
504 | wait = ATAPI_WAIT_PC; | |
505 | break; | |
506 | default: | |
4aff5e23 | 507 | if (!(rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
508 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
509 | wait = 0; | |
510 | break; | |
511 | } | |
512 | return wait; | |
513 | } | |
514 | ||
515 | /* Set up the device registers for transferring a packet command on DEV, | |
516 | expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
517 | which actually transfers the command to the drive. If this is a | |
518 | drq_interrupt device, this routine will arrange for HANDLER to be | |
519 | called when the interrupt from the drive arrives. Otherwise, HANDLER | |
520 | will be called immediately after the drive is prepared for the transfer. */ | |
521 | ||
522 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, | |
523 | int xferlen, | |
524 | ide_handler_t *handler) | |
525 | { | |
526 | ide_startstop_t startstop; | |
527 | struct cdrom_info *info = drive->driver_data; | |
528 | ide_hwif_t *hwif = drive->hwif; | |
529 | ||
530 | /* Wait for the controller to be idle. */ | |
531 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) | |
532 | return startstop; | |
533 | ||
3a6a3549 | 534 | /* FIXME: for Virtual DMA we must check harder */ |
1da177e4 LT |
535 | if (info->dma) |
536 | info->dma = !hwif->dma_setup(drive); | |
537 | ||
538 | /* Set up the controller registers. */ | |
2fc57388 BZ |
539 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
540 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); | |
4fe67178 | 541 | |
2bc4cf2d | 542 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
f0dd8712 AL |
543 | /* waiting for CDB interrupt, not DMA yet. */ |
544 | if (info->dma) | |
545 | drive->waiting_for_dma = 0; | |
546 | ||
1da177e4 LT |
547 | /* packet command */ |
548 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
549 | return ide_started; | |
550 | } else { | |
551 | unsigned long flags; | |
552 | ||
553 | /* packet command */ | |
554 | spin_lock_irqsave(&ide_lock, flags); | |
555 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); | |
556 | ndelay(400); | |
557 | spin_unlock_irqrestore(&ide_lock, flags); | |
558 | ||
559 | return (*handler) (drive); | |
560 | } | |
561 | } | |
562 | ||
563 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. | |
564 | The device registers must have already been prepared | |
565 | by cdrom_start_packet_command. | |
566 | HANDLER is the interrupt handler to call when the command completes | |
567 | or there's data ready. */ | |
1da177e4 LT |
568 | #define ATAPI_MIN_CDB_BYTES 12 |
569 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, | |
570 | struct request *rq, | |
571 | ide_handler_t *handler) | |
572 | { | |
573 | ide_hwif_t *hwif = drive->hwif; | |
574 | int cmd_len; | |
575 | struct cdrom_info *info = drive->driver_data; | |
576 | ide_startstop_t startstop; | |
577 | ||
2bc4cf2d | 578 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
1da177e4 LT |
579 | /* Here we should have been called after receiving an interrupt |
580 | from the device. DRQ should how be set. */ | |
581 | ||
582 | /* Check for errors. */ | |
583 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) | |
584 | return ide_stopped; | |
f0dd8712 AL |
585 | |
586 | /* Ok, next interrupt will be DMA interrupt. */ | |
587 | if (info->dma) | |
588 | drive->waiting_for_dma = 1; | |
1da177e4 LT |
589 | } else { |
590 | /* Otherwise, we must wait for DRQ to get set. */ | |
591 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, | |
592 | BUSY_STAT, WAIT_READY)) | |
593 | return startstop; | |
594 | } | |
595 | ||
596 | /* Arm the interrupt handler. */ | |
597 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); | |
598 | ||
599 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
600 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
601 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
602 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
603 | ||
604 | /* Send the command to the device. */ | |
605 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); | |
606 | ||
607 | /* Start the DMA if need be */ | |
608 | if (info->dma) | |
609 | hwif->dma_start(drive); | |
610 | ||
611 | return ide_started; | |
612 | } | |
613 | ||
614 | /**************************************************************************** | |
615 | * Block read functions. | |
616 | */ | |
617 | ||
68661c53 BZ |
618 | typedef void (xfer_func_t)(ide_drive_t *, void *, u32); |
619 | ||
5a5222d9 BZ |
620 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
621 | { | |
622 | while (len > 0) { | |
623 | int dum = 0; | |
624 | xf(drive, &dum, sizeof(dum)); | |
625 | len -= sizeof(dum); | |
626 | } | |
627 | } | |
628 | ||
1da177e4 LT |
629 | /* |
630 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector | |
631 | * buffer. Once the first sector is added, any subsequent sectors are | |
632 | * assumed to be continuous (until the buffer is cleared). For the first | |
633 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until | |
634 | * the buffer is cleared.) | |
635 | */ | |
636 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, | |
637 | int sectors_to_transfer) | |
638 | { | |
639 | struct cdrom_info *info = drive->driver_data; | |
640 | ||
641 | /* Number of sectors to read into the buffer. */ | |
642 | int sectors_to_buffer = min_t(int, sectors_to_transfer, | |
643 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - | |
644 | info->nsectors_buffered); | |
645 | ||
646 | char *dest; | |
647 | ||
648 | /* If we couldn't get a buffer, don't try to buffer anything... */ | |
649 | if (info->buffer == NULL) | |
650 | sectors_to_buffer = 0; | |
651 | ||
652 | /* If this is the first sector in the buffer, remember its number. */ | |
653 | if (info->nsectors_buffered == 0) | |
654 | info->sector_buffered = sector; | |
655 | ||
656 | /* Read the data into the buffer. */ | |
657 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; | |
658 | while (sectors_to_buffer > 0) { | |
659 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); | |
660 | --sectors_to_buffer; | |
661 | --sectors_to_transfer; | |
662 | ++info->nsectors_buffered; | |
663 | dest += SECTOR_SIZE; | |
664 | } | |
665 | ||
666 | /* Throw away any remaining data. */ | |
667 | while (sectors_to_transfer > 0) { | |
668 | static char dum[SECTOR_SIZE]; | |
669 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); | |
670 | --sectors_to_transfer; | |
671 | } | |
672 | } | |
673 | ||
674 | /* | |
675 | * Check the contents of the interrupt reason register from the cdrom | |
676 | * and attempt to recover if there are problems. Returns 0 if everything's | |
677 | * ok; nonzero if the request has been terminated. | |
678 | */ | |
858119e1 | 679 | static |
1da177e4 LT |
680 | int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason) |
681 | { | |
682 | if (ireason == 2) | |
683 | return 0; | |
684 | else if (ireason == 0) { | |
5a5222d9 BZ |
685 | ide_hwif_t *hwif = drive->hwif; |
686 | ||
1da177e4 | 687 | /* Whoops... The drive is expecting to receive data from us! */ |
35379c07 BZ |
688 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
689 | drive->name, __FUNCTION__); | |
1da177e4 LT |
690 | |
691 | /* Throw some data at the drive so it doesn't hang | |
692 | and quit this request. */ | |
5a5222d9 | 693 | ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len); |
1da177e4 LT |
694 | } else if (ireason == 1) { |
695 | /* Some drives (ASUS) seem to tell us that status | |
696 | * info is available. just get it and ignore. | |
697 | */ | |
698 | (void) HWIF(drive)->INB(IDE_STATUS_REG); | |
699 | return 0; | |
700 | } else { | |
701 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
702 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
703 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
704 | } |
705 | ||
706 | cdrom_end_request(drive, 0); | |
707 | return -1; | |
708 | } | |
709 | ||
710 | /* | |
711 | * Interrupt routine. Called when a read request has completed. | |
712 | */ | |
713 | static ide_startstop_t cdrom_read_intr (ide_drive_t *drive) | |
714 | { | |
715 | int stat; | |
716 | int ireason, len, sectors_to_transfer, nskip; | |
717 | struct cdrom_info *info = drive->driver_data; | |
718 | u8 lowcyl = 0, highcyl = 0; | |
719 | int dma = info->dma, dma_error = 0; | |
720 | ||
721 | struct request *rq = HWGROUP(drive)->rq; | |
722 | ||
723 | /* | |
724 | * handle dma case | |
725 | */ | |
726 | if (dma) { | |
727 | info->dma = 0; | |
52ef2ed0 BZ |
728 | dma_error = HWIF(drive)->ide_dma_end(drive); |
729 | if (dma_error) { | |
730 | printk(KERN_ERR "%s: DMA read error\n", drive->name); | |
7469aaf6 | 731 | ide_dma_off(drive); |
52ef2ed0 | 732 | } |
1da177e4 LT |
733 | } |
734 | ||
735 | if (cdrom_decode_status(drive, 0, &stat)) | |
736 | return ide_stopped; | |
737 | ||
738 | if (dma) { | |
739 | if (!dma_error) { | |
740 | ide_end_request(drive, 1, rq->nr_sectors); | |
741 | return ide_stopped; | |
742 | } else | |
743 | return ide_error(drive, "dma error", stat); | |
744 | } | |
745 | ||
746 | /* Read the interrupt reason and the transfer length. */ | |
747 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; | |
748 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
749 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
750 | ||
751 | len = lowcyl + (256 * highcyl); | |
752 | ||
753 | /* If DRQ is clear, the command has completed. */ | |
754 | if ((stat & DRQ_STAT) == 0) { | |
755 | /* If we're not done filling the current buffer, complain. | |
756 | Otherwise, complete the command normally. */ | |
757 | if (rq->current_nr_sectors > 0) { | |
758 | printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n", | |
759 | drive->name, rq->current_nr_sectors); | |
4aff5e23 | 760 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
761 | cdrom_end_request(drive, 0); |
762 | } else | |
763 | cdrom_end_request(drive, 1); | |
764 | return ide_stopped; | |
765 | } | |
766 | ||
767 | /* Check that the drive is expecting to do the same thing we are. */ | |
768 | if (cdrom_read_check_ireason (drive, len, ireason)) | |
769 | return ide_stopped; | |
770 | ||
771 | /* Assume that the drive will always provide data in multiples | |
772 | of at least SECTOR_SIZE, as it gets hairy to keep track | |
773 | of the transfers otherwise. */ | |
774 | if ((len % SECTOR_SIZE) != 0) { | |
775 | printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n", | |
776 | drive->name, len); | |
2bc4cf2d | 777 | if (info->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) |
1da177e4 LT |
778 | printk (KERN_ERR " This drive is not supported by this version of the driver\n"); |
779 | else { | |
780 | printk (KERN_ERR " Trying to limit transfer sizes\n"); | |
2bc4cf2d | 781 | info->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; |
1da177e4 LT |
782 | } |
783 | cdrom_end_request(drive, 0); | |
784 | return ide_stopped; | |
785 | } | |
786 | ||
787 | /* The number of sectors we need to read from the drive. */ | |
788 | sectors_to_transfer = len / SECTOR_SIZE; | |
789 | ||
790 | /* First, figure out if we need to bit-bucket | |
791 | any of the leading sectors. */ | |
792 | nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer); | |
793 | ||
794 | while (nskip > 0) { | |
795 | /* We need to throw away a sector. */ | |
796 | static char dum[SECTOR_SIZE]; | |
797 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); | |
798 | ||
799 | --rq->current_nr_sectors; | |
800 | --nskip; | |
801 | --sectors_to_transfer; | |
802 | } | |
803 | ||
804 | /* Now loop while we still have data to read from the drive. */ | |
805 | while (sectors_to_transfer > 0) { | |
806 | int this_transfer; | |
807 | ||
808 | /* If we've filled the present buffer but there's another | |
809 | chained buffer after it, move on. */ | |
810 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
811 | cdrom_end_request(drive, 1); | |
812 | ||
813 | /* If the buffers are full, cache the rest of the data in our | |
814 | internal buffer. */ | |
815 | if (rq->current_nr_sectors == 0) { | |
816 | cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer); | |
817 | sectors_to_transfer = 0; | |
818 | } else { | |
819 | /* Transfer data to the buffers. | |
820 | Figure out how many sectors we can transfer | |
821 | to the current buffer. */ | |
822 | this_transfer = min_t(int, sectors_to_transfer, | |
823 | rq->current_nr_sectors); | |
824 | ||
825 | /* Read this_transfer sectors | |
826 | into the current buffer. */ | |
827 | while (this_transfer > 0) { | |
828 | HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE); | |
829 | rq->buffer += SECTOR_SIZE; | |
830 | --rq->nr_sectors; | |
831 | --rq->current_nr_sectors; | |
832 | ++rq->sector; | |
833 | --this_transfer; | |
834 | --sectors_to_transfer; | |
835 | } | |
836 | } | |
837 | } | |
838 | ||
839 | /* Done moving data! Wait for another interrupt. */ | |
840 | ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL); | |
841 | return ide_started; | |
842 | } | |
843 | ||
844 | /* | |
845 | * Try to satisfy some of the current read request from our cached data. | |
846 | * Returns nonzero if the request has been completed, zero otherwise. | |
847 | */ | |
848 | static int cdrom_read_from_buffer (ide_drive_t *drive) | |
849 | { | |
850 | struct cdrom_info *info = drive->driver_data; | |
851 | struct request *rq = HWGROUP(drive)->rq; | |
852 | unsigned short sectors_per_frame; | |
853 | ||
854 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
855 | ||
856 | /* Can't do anything if there's no buffer. */ | |
857 | if (info->buffer == NULL) return 0; | |
858 | ||
859 | /* Loop while this request needs data and the next block is present | |
860 | in our cache. */ | |
861 | while (rq->nr_sectors > 0 && | |
862 | rq->sector >= info->sector_buffered && | |
863 | rq->sector < info->sector_buffered + info->nsectors_buffered) { | |
864 | if (rq->current_nr_sectors == 0) | |
865 | cdrom_end_request(drive, 1); | |
866 | ||
867 | memcpy (rq->buffer, | |
868 | info->buffer + | |
869 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, | |
870 | SECTOR_SIZE); | |
871 | rq->buffer += SECTOR_SIZE; | |
872 | --rq->current_nr_sectors; | |
873 | --rq->nr_sectors; | |
874 | ++rq->sector; | |
875 | } | |
876 | ||
877 | /* If we've satisfied the current request, | |
878 | terminate it successfully. */ | |
879 | if (rq->nr_sectors == 0) { | |
880 | cdrom_end_request(drive, 1); | |
881 | return -1; | |
882 | } | |
883 | ||
884 | /* Move on to the next buffer if needed. */ | |
885 | if (rq->current_nr_sectors == 0) | |
886 | cdrom_end_request(drive, 1); | |
887 | ||
888 | /* If this condition does not hold, then the kluge i use to | |
889 | represent the number of sectors to skip at the start of a transfer | |
890 | will fail. I think that this will never happen, but let's be | |
891 | paranoid and check. */ | |
892 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && | |
893 | (rq->sector & (sectors_per_frame - 1))) { | |
894 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", | |
895 | drive->name, (long)rq->sector); | |
896 | cdrom_end_request(drive, 0); | |
897 | return -1; | |
898 | } | |
899 | ||
900 | return 0; | |
901 | } | |
902 | ||
903 | /* | |
904 | * Routine to send a read packet command to the drive. | |
905 | * This is usually called directly from cdrom_start_read. | |
906 | * However, for drq_interrupt devices, it is called from an interrupt | |
907 | * when the drive is ready to accept the command. | |
908 | */ | |
909 | static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive) | |
910 | { | |
911 | struct request *rq = HWGROUP(drive)->rq; | |
912 | unsigned short sectors_per_frame; | |
913 | int nskip; | |
914 | ||
915 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
916 | ||
917 | /* If the requested sector doesn't start on a cdrom block boundary, | |
918 | we must adjust the start of the transfer so that it does, | |
919 | and remember to skip the first few sectors. | |
920 | If the CURRENT_NR_SECTORS field is larger than the size | |
921 | of the buffer, it will mean that we're to skip a number | |
922 | of sectors equal to the amount by which CURRENT_NR_SECTORS | |
923 | is larger than the buffer size. */ | |
924 | nskip = rq->sector & (sectors_per_frame - 1); | |
925 | if (nskip > 0) { | |
926 | /* Sanity check... */ | |
927 | if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) && | |
928 | (rq->sector & (sectors_per_frame - 1))) { | |
929 | printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n", | |
930 | drive->name, rq->current_nr_sectors); | |
931 | cdrom_end_request(drive, 0); | |
932 | return ide_stopped; | |
933 | } | |
934 | rq->current_nr_sectors += nskip; | |
935 | } | |
936 | ||
937 | /* Set up the command */ | |
938 | rq->timeout = ATAPI_WAIT_PC; | |
939 | ||
940 | /* Send the command to the drive and return. */ | |
941 | return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr); | |
942 | } | |
943 | ||
944 | ||
945 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ | |
946 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ | |
947 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ | |
948 | ||
949 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) | |
950 | { | |
951 | struct cdrom_info *info = drive->driver_data; | |
952 | int stat; | |
953 | static int retry = 10; | |
954 | ||
955 | if (cdrom_decode_status(drive, 0, &stat)) | |
956 | return ide_stopped; | |
4fe67178 | 957 | |
2bc4cf2d | 958 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
959 | |
960 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { | |
961 | if (--retry == 0) { | |
962 | /* | |
963 | * this condition is far too common, to bother | |
964 | * users about it | |
965 | */ | |
966 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ | |
967 | drive->dsc_overlap = 0; | |
968 | } | |
969 | } | |
970 | return ide_stopped; | |
971 | } | |
972 | ||
973 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) | |
974 | { | |
975 | struct request *rq = HWGROUP(drive)->rq; | |
976 | sector_t frame = rq->sector; | |
977 | ||
978 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); | |
979 | ||
980 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
981 | rq->cmd[0] = GPCMD_SEEK; | |
982 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); | |
983 | ||
984 | rq->timeout = ATAPI_WAIT_PC; | |
985 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); | |
986 | } | |
987 | ||
988 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) | |
989 | { | |
990 | struct cdrom_info *info = drive->driver_data; | |
991 | ||
992 | info->dma = 0; | |
1da177e4 LT |
993 | info->start_seek = jiffies; |
994 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); | |
995 | } | |
996 | ||
997 | /* Fix up a possibly partially-processed request so that we can | |
998 | start it over entirely, or even put it back on the request queue. */ | |
999 | static void restore_request (struct request *rq) | |
1000 | { | |
1001 | if (rq->buffer != bio_data(rq->bio)) { | |
1002 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; | |
1003 | ||
1004 | rq->buffer = bio_data(rq->bio); | |
1005 | rq->nr_sectors += n; | |
1006 | rq->sector -= n; | |
1007 | } | |
1008 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); | |
1009 | rq->hard_nr_sectors = rq->nr_sectors; | |
1010 | rq->hard_sector = rq->sector; | |
1011 | rq->q->prep_rq_fn(rq->q, rq); | |
1012 | } | |
1013 | ||
1014 | /* | |
1015 | * Start a read request from the CD-ROM. | |
1016 | */ | |
1017 | static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) | |
1018 | { | |
1019 | struct cdrom_info *info = drive->driver_data; | |
1020 | struct request *rq = HWGROUP(drive)->rq; | |
1021 | unsigned short sectors_per_frame; | |
1022 | ||
1023 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1024 | ||
1025 | /* We may be retrying this request after an error. Fix up | |
1026 | any weirdness which might be present in the request packet. */ | |
1027 | restore_request(rq); | |
1028 | ||
1029 | /* Satisfy whatever we can of this request from our cached sector. */ | |
1030 | if (cdrom_read_from_buffer(drive)) | |
1031 | return ide_stopped; | |
1032 | ||
1da177e4 LT |
1033 | /* Clear the local sector buffer. */ |
1034 | info->nsectors_buffered = 0; | |
1035 | ||
1036 | /* use dma, if possible. */ | |
1037 | info->dma = drive->using_dma; | |
1038 | if ((rq->sector & (sectors_per_frame - 1)) || | |
1039 | (rq->nr_sectors & (sectors_per_frame - 1))) | |
1040 | info->dma = 0; | |
1041 | ||
1da177e4 LT |
1042 | /* Start sending the read request to the drive. */ |
1043 | return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation); | |
1044 | } | |
1045 | ||
1046 | /**************************************************************************** | |
1047 | * Execute all other packet commands. | |
1048 | */ | |
1049 | ||
1050 | /* Interrupt routine for packet command completion. */ | |
1051 | static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive) | |
1052 | { | |
1da177e4 | 1053 | struct request *rq = HWGROUP(drive)->rq; |
68661c53 BZ |
1054 | xfer_func_t *xferfunc = NULL; |
1055 | int stat, ireason, len, thislen, write; | |
1da177e4 | 1056 | u8 lowcyl = 0, highcyl = 0; |
1da177e4 LT |
1057 | |
1058 | /* Check for errors. */ | |
1059 | if (cdrom_decode_status(drive, 0, &stat)) | |
1060 | return ide_stopped; | |
1061 | ||
1062 | /* Read the interrupt reason and the transfer length. */ | |
8606ab09 | 1063 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
1da177e4 LT |
1064 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
1065 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1066 | ||
1067 | len = lowcyl + (256 * highcyl); | |
1068 | ||
1069 | /* If DRQ is clear, the command has completed. | |
1070 | Complain if we still have data left to transfer. */ | |
1071 | if ((stat & DRQ_STAT) == 0) { | |
1072 | /* Some of the trailing request sense fields are optional, and | |
1073 | some drives don't send them. Sigh. */ | |
1074 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
1075 | rq->data_len > 0 && | |
1076 | rq->data_len <= 5) { | |
1077 | while (rq->data_len > 0) { | |
1078 | *(unsigned char *)rq->data++ = 0; | |
1079 | --rq->data_len; | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | if (rq->data_len == 0) | |
1084 | cdrom_end_request(drive, 1); | |
1085 | else { | |
4aff5e23 | 1086 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
1087 | cdrom_end_request(drive, 0); |
1088 | } | |
1089 | return ide_stopped; | |
1090 | } | |
1091 | ||
1092 | /* Figure out how much data to transfer. */ | |
1093 | thislen = rq->data_len; | |
68661c53 BZ |
1094 | if (thislen > len) |
1095 | thislen = len; | |
1da177e4 | 1096 | |
8606ab09 | 1097 | if (ireason == 0) { |
68661c53 BZ |
1098 | write = 1; |
1099 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
1100 | } else if (ireason == 2) { | |
1101 | write = 0; | |
1102 | xferfunc = HWIF(drive)->atapi_input_bytes; | |
1da177e4 LT |
1103 | } |
1104 | ||
68661c53 | 1105 | if (xferfunc) { |
1da177e4 | 1106 | if (!rq->data) { |
f1071e62 BZ |
1107 | printk(KERN_ERR "%s: confused, missing data\n", |
1108 | drive->name); | |
68661c53 BZ |
1109 | blk_dump_rq_flags(rq, write ? "cdrom_pc_intr, write" |
1110 | : "cdrom_pc_intr, read"); | |
f1071e62 | 1111 | goto pad; |
1da177e4 LT |
1112 | } |
1113 | /* Transfer the data. */ | |
68661c53 | 1114 | xferfunc(drive, rq->data, thislen); |
1da177e4 | 1115 | |
1da177e4 | 1116 | /* Keep count of how much data we've moved. */ |
5a5222d9 | 1117 | len -= thislen; |
1da177e4 LT |
1118 | rq->data += thislen; |
1119 | rq->data_len -= thislen; | |
1120 | ||
68661c53 | 1121 | if (write && blk_sense_request(rq)) |
1da177e4 LT |
1122 | rq->sense_len += thislen; |
1123 | } else { | |
1da177e4 | 1124 | printk (KERN_ERR "%s: cdrom_pc_intr: The drive " |
1ad55440 RK |
1125 | "appears confused (ireason = 0x%02x). " |
1126 | "Trying to recover by ending request.\n", | |
1da177e4 | 1127 | drive->name, ireason); |
4aff5e23 | 1128 | rq->cmd_flags |= REQ_FAILED; |
1ad55440 RK |
1129 | cdrom_end_request(drive, 0); |
1130 | return ide_stopped; | |
1da177e4 | 1131 | } |
f1071e62 | 1132 | pad: |
5a5222d9 BZ |
1133 | /* |
1134 | * If we haven't moved enough data to satisfy the drive, | |
1135 | * add some padding. | |
1136 | */ | |
1137 | if (len > 0) | |
1138 | ide_cd_pad_transfer(drive, xferfunc, len); | |
1139 | ||
1da177e4 LT |
1140 | /* Now we wait for another interrupt. */ |
1141 | ide_set_handler(drive, &cdrom_pc_intr, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
1142 | return ide_started; | |
1143 | } | |
1144 | ||
1145 | static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive) | |
1146 | { | |
1147 | struct request *rq = HWGROUP(drive)->rq; | |
1148 | ||
1149 | if (!rq->timeout) | |
1150 | rq->timeout = ATAPI_WAIT_PC; | |
1151 | ||
1152 | /* Send the command to the drive and return. */ | |
1153 | return cdrom_transfer_packet_command(drive, rq, &cdrom_pc_intr); | |
1154 | } | |
1155 | ||
1156 | ||
1157 | static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive) | |
1158 | { | |
1159 | int len; | |
1160 | struct request *rq = HWGROUP(drive)->rq; | |
1161 | struct cdrom_info *info = drive->driver_data; | |
1162 | ||
1163 | info->dma = 0; | |
4aff5e23 | 1164 | rq->cmd_flags &= ~REQ_FAILED; |
1da177e4 LT |
1165 | len = rq->data_len; |
1166 | ||
1167 | /* Start sending the command to the drive. */ | |
1168 | return cdrom_start_packet_command(drive, len, cdrom_do_pc_continuation); | |
1169 | } | |
1170 | ||
1171 | ||
dbe217af | 1172 | static int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
1173 | { |
1174 | struct request_sense sense; | |
1175 | int retries = 10; | |
4aff5e23 | 1176 | unsigned int flags = rq->cmd_flags; |
1da177e4 LT |
1177 | |
1178 | if (rq->sense == NULL) | |
1179 | rq->sense = &sense; | |
1180 | ||
1181 | /* Start of retry loop. */ | |
1182 | do { | |
1183 | int error; | |
1184 | unsigned long time = jiffies; | |
4aff5e23 | 1185 | rq->cmd_flags = flags; |
1da177e4 LT |
1186 | |
1187 | error = ide_do_drive_cmd(drive, rq, ide_wait); | |
1188 | time = jiffies - time; | |
1189 | ||
1190 | /* FIXME: we should probably abort/retry or something | |
1191 | * in case of failure */ | |
4aff5e23 | 1192 | if (rq->cmd_flags & REQ_FAILED) { |
1da177e4 LT |
1193 | /* The request failed. Retry if it was due to a unit |
1194 | attention status | |
1195 | (usually means media was changed). */ | |
1196 | struct request_sense *reqbuf = rq->sense; | |
1197 | ||
1198 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
1199 | cdrom_saw_media_change(drive); | |
1200 | else if (reqbuf->sense_key == NOT_READY && | |
1201 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
1202 | /* The drive is in the process of loading | |
1203 | a disk. Retry, but wait a little to give | |
1204 | the drive time to complete the load. */ | |
1205 | ssleep(2); | |
1206 | } else { | |
1207 | /* Otherwise, don't retry. */ | |
1208 | retries = 0; | |
1209 | } | |
1210 | --retries; | |
1211 | } | |
1212 | ||
1213 | /* End of retry loop. */ | |
4aff5e23 | 1214 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
1da177e4 LT |
1215 | |
1216 | /* Return an error if the command failed. */ | |
4aff5e23 | 1217 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
1218 | } |
1219 | ||
1220 | /* | |
1221 | * Write handling | |
1222 | */ | |
858119e1 | 1223 | static int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason) |
1da177e4 LT |
1224 | { |
1225 | /* Two notes about IDE interrupt reason here - 0 means that | |
1226 | * the drive wants to receive data from us, 2 means that | |
1227 | * the drive is expecting to transfer data to us. | |
1228 | */ | |
1229 | if (ireason == 0) | |
1230 | return 0; | |
1231 | else if (ireason == 2) { | |
5a5222d9 BZ |
1232 | ide_hwif_t *hwif = drive->hwif; |
1233 | ||
1da177e4 | 1234 | /* Whoops... The drive wants to send data. */ |
35379c07 BZ |
1235 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
1236 | drive->name, __FUNCTION__); | |
1da177e4 | 1237 | |
5a5222d9 | 1238 | ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len); |
1da177e4 LT |
1239 | } else { |
1240 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
1241 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
1242 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
1243 | } |
1244 | ||
1245 | cdrom_end_request(drive, 0); | |
1246 | return 1; | |
1247 | } | |
1248 | ||
aaa04c28 KU |
1249 | /* |
1250 | * Called from blk_end_request_callback() after the data of the request | |
1251 | * is completed and before the request is completed. | |
1252 | * By returning value '1', blk_end_request_callback() returns immediately | |
1253 | * without completing the request. | |
1254 | */ | |
1255 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) | |
1256 | { | |
1257 | return 1; | |
1258 | } | |
1259 | ||
1da177e4 LT |
1260 | /* |
1261 | * best way to deal with dma that is not sector aligned right now... note | |
1262 | * that in this path we are not using ->data or ->buffer at all. this irs | |
1263 | * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the | |
1264 | * future. | |
1265 | */ | |
1266 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) | |
1267 | { | |
1268 | struct cdrom_info *info = drive->driver_data; | |
1269 | struct request *rq = HWGROUP(drive)->rq; | |
1270 | int dma_error, dma, stat, ireason, len, thislen; | |
1271 | u8 lowcyl, highcyl; | |
1272 | xfer_func_t *xferfunc; | |
1273 | unsigned long flags; | |
1274 | ||
1275 | /* Check for errors. */ | |
1276 | dma_error = 0; | |
1277 | dma = info->dma; | |
1278 | if (dma) { | |
1279 | info->dma = 0; | |
1280 | dma_error = HWIF(drive)->ide_dma_end(drive); | |
eba15fba BZ |
1281 | if (dma_error) { |
1282 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
1283 | rq_data_dir(rq) ? "write" : "read"); | |
1284 | ide_dma_off(drive); | |
1285 | } | |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | if (cdrom_decode_status(drive, 0, &stat)) | |
1289 | return ide_stopped; | |
1290 | ||
1291 | /* | |
1292 | * using dma, transfer is complete now | |
1293 | */ | |
1294 | if (dma) { | |
eba15fba | 1295 | if (dma_error) |
1da177e4 | 1296 | return ide_error(drive, "dma error", stat); |
1da177e4 | 1297 | |
aaa04c28 KU |
1298 | spin_lock_irqsave(&ide_lock, flags); |
1299 | if (__blk_end_request(rq, 0, rq->data_len)) | |
1300 | BUG(); | |
1301 | HWGROUP(drive)->rq = NULL; | |
1302 | spin_unlock_irqrestore(&ide_lock, flags); | |
1303 | ||
1304 | return ide_stopped; | |
1da177e4 LT |
1305 | } |
1306 | ||
1307 | /* | |
1308 | * ok we fall to pio :/ | |
1309 | */ | |
1310 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; | |
1311 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
1312 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1313 | ||
1314 | len = lowcyl + (256 * highcyl); | |
1315 | thislen = rq->data_len; | |
1316 | if (thislen > len) | |
1317 | thislen = len; | |
1318 | ||
1319 | /* | |
1320 | * If DRQ is clear, the command has completed. | |
1321 | */ | |
aaa04c28 KU |
1322 | if ((stat & DRQ_STAT) == 0) { |
1323 | spin_lock_irqsave(&ide_lock, flags); | |
4f4f6c25 | 1324 | if (__blk_end_request(rq, 0, rq->data_len)) |
aaa04c28 KU |
1325 | BUG(); |
1326 | HWGROUP(drive)->rq = NULL; | |
1327 | spin_unlock_irqrestore(&ide_lock, flags); | |
1328 | ||
1329 | return ide_stopped; | |
1330 | } | |
1da177e4 LT |
1331 | |
1332 | /* | |
1333 | * check which way to transfer data | |
1334 | */ | |
1335 | if (rq_data_dir(rq) == WRITE) { | |
1336 | /* | |
1337 | * write to drive | |
1338 | */ | |
1339 | if (cdrom_write_check_ireason(drive, len, ireason)) | |
1340 | return ide_stopped; | |
1341 | ||
1342 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
1343 | } else { | |
1344 | /* | |
1345 | * read from drive | |
1346 | */ | |
1347 | if (cdrom_read_check_ireason(drive, len, ireason)) | |
1348 | return ide_stopped; | |
1349 | ||
1350 | xferfunc = HWIF(drive)->atapi_input_bytes; | |
1351 | } | |
1352 | ||
1353 | /* | |
1354 | * transfer data | |
1355 | */ | |
1356 | while (thislen > 0) { | |
1357 | int blen = blen = rq->data_len; | |
1358 | char *ptr = rq->data; | |
1359 | ||
1360 | /* | |
1361 | * bio backed? | |
1362 | */ | |
1363 | if (rq->bio) { | |
1364 | ptr = bio_data(rq->bio); | |
1365 | blen = bio_iovec(rq->bio)->bv_len; | |
1366 | } | |
1367 | ||
1368 | if (!ptr) { | |
1369 | printk(KERN_ERR "%s: confused, missing data\n", drive->name); | |
1370 | break; | |
1371 | } | |
1372 | ||
1373 | if (blen > thislen) | |
1374 | blen = thislen; | |
1375 | ||
1376 | xferfunc(drive, ptr, blen); | |
1377 | ||
1378 | thislen -= blen; | |
1379 | len -= blen; | |
1380 | rq->data_len -= blen; | |
1381 | ||
1382 | if (rq->bio) | |
aaa04c28 KU |
1383 | /* |
1384 | * The request can't be completed until DRQ is cleared. | |
1385 | * So complete the data, but don't complete the request | |
1386 | * using the dummy function for the callback feature | |
1387 | * of blk_end_request_callback(). | |
1388 | */ | |
1389 | blk_end_request_callback(rq, 0, blen, | |
1390 | cdrom_newpc_intr_dummy_cb); | |
1da177e4 LT |
1391 | else |
1392 | rq->data += blen; | |
1393 | } | |
1394 | ||
1395 | /* | |
1396 | * pad, if necessary | |
1397 | */ | |
5a5222d9 BZ |
1398 | if (len > 0) |
1399 | ide_cd_pad_transfer(drive, xferfunc, len); | |
1da177e4 | 1400 | |
125e1874 | 1401 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
1402 | |
1403 | ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL); | |
1404 | return ide_started; | |
1da177e4 LT |
1405 | } |
1406 | ||
1407 | static ide_startstop_t cdrom_write_intr(ide_drive_t *drive) | |
1408 | { | |
1409 | int stat, ireason, len, sectors_to_transfer, uptodate; | |
1410 | struct cdrom_info *info = drive->driver_data; | |
1411 | int dma_error = 0, dma = info->dma; | |
1412 | u8 lowcyl = 0, highcyl = 0; | |
1413 | ||
1414 | struct request *rq = HWGROUP(drive)->rq; | |
1415 | ||
1416 | /* Check for errors. */ | |
1417 | if (dma) { | |
1418 | info->dma = 0; | |
b481b238 BZ |
1419 | dma_error = HWIF(drive)->ide_dma_end(drive); |
1420 | if (dma_error) { | |
1421 | printk(KERN_ERR "%s: DMA write error\n", drive->name); | |
7469aaf6 | 1422 | ide_dma_off(drive); |
1da177e4 LT |
1423 | } |
1424 | } | |
1425 | ||
1426 | if (cdrom_decode_status(drive, 0, &stat)) | |
1427 | return ide_stopped; | |
1428 | ||
1429 | /* | |
1430 | * using dma, transfer is complete now | |
1431 | */ | |
1432 | if (dma) { | |
1433 | if (dma_error) | |
1434 | return ide_error(drive, "dma error", stat); | |
1435 | ||
1436 | ide_end_request(drive, 1, rq->nr_sectors); | |
1437 | return ide_stopped; | |
1438 | } | |
1439 | ||
1440 | /* Read the interrupt reason and the transfer length. */ | |
31a71191 | 1441 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
1da177e4 LT |
1442 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
1443 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1444 | ||
1445 | len = lowcyl + (256 * highcyl); | |
1446 | ||
1447 | /* If DRQ is clear, the command has completed. */ | |
1448 | if ((stat & DRQ_STAT) == 0) { | |
1449 | /* If we're not done writing, complain. | |
1450 | * Otherwise, complete the command normally. | |
1451 | */ | |
1452 | uptodate = 1; | |
1453 | if (rq->current_nr_sectors > 0) { | |
b481b238 BZ |
1454 | printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n", |
1455 | drive->name, __FUNCTION__, | |
1456 | rq->current_nr_sectors); | |
1da177e4 LT |
1457 | uptodate = 0; |
1458 | } | |
1459 | cdrom_end_request(drive, uptodate); | |
1460 | return ide_stopped; | |
1461 | } | |
1462 | ||
1463 | /* Check that the drive is expecting to do the same thing we are. */ | |
1464 | if (cdrom_write_check_ireason(drive, len, ireason)) | |
1465 | return ide_stopped; | |
1466 | ||
1467 | sectors_to_transfer = len / SECTOR_SIZE; | |
1468 | ||
1469 | /* | |
1470 | * now loop and write out the data | |
1471 | */ | |
1472 | while (sectors_to_transfer > 0) { | |
1473 | int this_transfer; | |
1474 | ||
1475 | if (!rq->current_nr_sectors) { | |
b481b238 BZ |
1476 | printk(KERN_ERR "%s: %s: confused, missing data\n", |
1477 | drive->name, __FUNCTION__); | |
1da177e4 LT |
1478 | break; |
1479 | } | |
1480 | ||
1481 | /* | |
1482 | * Figure out how many sectors we can transfer | |
1483 | */ | |
1484 | this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors); | |
1485 | ||
1486 | while (this_transfer > 0) { | |
1487 | HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE); | |
1488 | rq->buffer += SECTOR_SIZE; | |
1489 | --rq->nr_sectors; | |
1490 | --rq->current_nr_sectors; | |
1491 | ++rq->sector; | |
1492 | --this_transfer; | |
1493 | --sectors_to_transfer; | |
1494 | } | |
1495 | ||
1496 | /* | |
1497 | * current buffer complete, move on | |
1498 | */ | |
1499 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1500 | cdrom_end_request(drive, 1); | |
1501 | } | |
1502 | ||
1503 | /* re-arm handler */ | |
1504 | ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL); | |
1505 | return ide_started; | |
1506 | } | |
1507 | ||
1508 | static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive) | |
1509 | { | |
1510 | struct request *rq = HWGROUP(drive)->rq; | |
1511 | ||
1512 | #if 0 /* the immediate bit */ | |
1513 | rq->cmd[1] = 1 << 3; | |
1514 | #endif | |
1515 | rq->timeout = ATAPI_WAIT_PC; | |
1516 | ||
1517 | return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr); | |
1518 | } | |
1519 | ||
1520 | static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) | |
1521 | { | |
1522 | struct cdrom_info *info = drive->driver_data; | |
1523 | struct gendisk *g = info->disk; | |
1524 | unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1525 | ||
1526 | /* | |
1527 | * writes *must* be hardware frame aligned | |
1528 | */ | |
1529 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || | |
1530 | (rq->sector & (sectors_per_frame - 1))) { | |
1531 | cdrom_end_request(drive, 0); | |
1532 | return ide_stopped; | |
1533 | } | |
1534 | ||
1535 | /* | |
1536 | * disk has become write protected | |
1537 | */ | |
1538 | if (g->policy) { | |
1539 | cdrom_end_request(drive, 0); | |
1540 | return ide_stopped; | |
1541 | } | |
1542 | ||
1da177e4 LT |
1543 | info->nsectors_buffered = 0; |
1544 | ||
1545 | /* use dma, if possible. we don't need to check more, since we | |
1546 | * know that the transfer is always (at least!) frame aligned */ | |
1547 | info->dma = drive->using_dma ? 1 : 0; | |
1da177e4 LT |
1548 | |
1549 | info->devinfo.media_written = 1; | |
1550 | ||
1551 | /* Start sending the write request to the drive. */ | |
1552 | return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont); | |
1553 | } | |
1554 | ||
1555 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1556 | { | |
1557 | struct request *rq = HWGROUP(drive)->rq; | |
1558 | ||
1559 | if (!rq->timeout) | |
1560 | rq->timeout = ATAPI_WAIT_PC; | |
1561 | ||
1562 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); | |
1563 | } | |
1564 | ||
1565 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) | |
1566 | { | |
1567 | struct cdrom_info *info = drive->driver_data; | |
1568 | ||
4aff5e23 | 1569 | rq->cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1570 | |
1571 | info->dma = 0; | |
1da177e4 LT |
1572 | |
1573 | /* | |
1574 | * sg request | |
1575 | */ | |
1576 | if (rq->bio) { | |
1577 | int mask = drive->queue->dma_alignment; | |
1578 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); | |
1579 | ||
1da177e4 LT |
1580 | info->dma = drive->using_dma; |
1581 | ||
1582 | /* | |
1583 | * check if dma is safe | |
5d9e4ea5 LT |
1584 | * |
1585 | * NOTE! The "len" and "addr" checks should possibly have | |
1586 | * separate masks. | |
1da177e4 | 1587 | */ |
4e7c6816 | 1588 | if ((rq->data_len & 15) || (addr & mask)) |
1da177e4 LT |
1589 | info->dma = 0; |
1590 | } | |
1591 | ||
1592 | /* Start sending the command to the drive. */ | |
1593 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); | |
1594 | } | |
1595 | ||
1596 | /**************************************************************************** | |
1597 | * cdrom driver request routine. | |
1598 | */ | |
1599 | static ide_startstop_t | |
1600 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) | |
1601 | { | |
1602 | ide_startstop_t action; | |
1603 | struct cdrom_info *info = drive->driver_data; | |
1604 | ||
1605 | if (blk_fs_request(rq)) { | |
2bc4cf2d | 1606 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
1da177e4 LT |
1607 | unsigned long elapsed = jiffies - info->start_seek; |
1608 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
1609 | ||
1610 | if ((stat & SEEK_STAT) != SEEK_STAT) { | |
1611 | if (elapsed < IDECD_SEEK_TIMEOUT) { | |
1612 | ide_stall_queue(drive, IDECD_SEEK_TIMER); | |
1613 | return ide_stopped; | |
1614 | } | |
1615 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); | |
1616 | } | |
2bc4cf2d | 1617 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
1da177e4 LT |
1618 | } |
1619 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { | |
1620 | action = cdrom_start_seek(drive, block); | |
1621 | } else { | |
1622 | if (rq_data_dir(rq) == READ) | |
1623 | action = cdrom_start_read(drive, block); | |
1624 | else | |
1625 | action = cdrom_start_write(drive, rq); | |
1626 | } | |
1627 | info->last_block = block; | |
1628 | return action; | |
cea2885a JA |
1629 | } else if (rq->cmd_type == REQ_TYPE_SENSE || |
1630 | rq->cmd_type == REQ_TYPE_ATA_PC) { | |
1da177e4 | 1631 | return cdrom_do_packet_command(drive); |
4aff5e23 | 1632 | } else if (blk_pc_request(rq)) { |
1da177e4 | 1633 | return cdrom_do_block_pc(drive, rq); |
4aff5e23 | 1634 | } else if (blk_special_request(rq)) { |
1da177e4 LT |
1635 | /* |
1636 | * right now this can only be a reset... | |
1637 | */ | |
1638 | cdrom_end_request(drive, 1); | |
1639 | return ide_stopped; | |
1640 | } | |
1641 | ||
1642 | blk_dump_rq_flags(rq, "ide-cd bad flags"); | |
1643 | cdrom_end_request(drive, 0); | |
1644 | return ide_stopped; | |
1645 | } | |
1646 | ||
1647 | ||
1648 | ||
1649 | /**************************************************************************** | |
1650 | * Ioctl handling. | |
1651 | * | |
1652 | * Routines which queue packet commands take as a final argument a pointer | |
1653 | * to a request_sense struct. If execution of the command results | |
1654 | * in an error with a CHECK CONDITION status, this structure will be filled | |
1655 | * with the results of the subsequent request sense command. The pointer | |
1656 | * can also be NULL, in which case no sense information is returned. | |
1657 | */ | |
1658 | ||
1da177e4 LT |
1659 | static |
1660 | void msf_from_bcd (struct atapi_msf *msf) | |
1661 | { | |
9a6dc668 BZ |
1662 | msf->minute = BCD2BIN(msf->minute); |
1663 | msf->second = BCD2BIN(msf->second); | |
1664 | msf->frame = BCD2BIN(msf->frame); | |
1da177e4 LT |
1665 | } |
1666 | ||
1da177e4 LT |
1667 | static inline |
1668 | void lba_to_msf (int lba, byte *m, byte *s, byte *f) | |
1669 | { | |
1670 | lba += CD_MSF_OFFSET; | |
1671 | lba &= 0xffffff; /* negative lbas use only 24 bits */ | |
1672 | *m = lba / (CD_SECS * CD_FRAMES); | |
1673 | lba %= (CD_SECS * CD_FRAMES); | |
1674 | *s = lba / CD_FRAMES; | |
1675 | *f = lba % CD_FRAMES; | |
1676 | } | |
1677 | ||
1678 | ||
1679 | static inline | |
1680 | int msf_to_lba (byte m, byte s, byte f) | |
1681 | { | |
1682 | return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; | |
1683 | } | |
1684 | ||
1685 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) | |
1686 | { | |
1687 | struct request req; | |
1688 | struct cdrom_info *info = drive->driver_data; | |
1689 | struct cdrom_device_info *cdi = &info->devinfo; | |
1690 | ||
1691 | cdrom_prepare_request(drive, &req); | |
1692 | ||
1693 | req.sense = sense; | |
1694 | req.cmd[0] = GPCMD_TEST_UNIT_READY; | |
4aff5e23 | 1695 | req.cmd_flags |= REQ_QUIET; |
1da177e4 | 1696 | |
cdf6000d BZ |
1697 | /* |
1698 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to | |
1699 | * switch CDs instead of supporting the LOAD_UNLOAD opcode. | |
1700 | */ | |
1da177e4 | 1701 | req.cmd[7] = cdi->sanyo_slot % 3; |
1da177e4 LT |
1702 | |
1703 | return cdrom_queue_packet_command(drive, &req); | |
1704 | } | |
1705 | ||
1706 | ||
1707 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ | |
1708 | static int | |
1709 | cdrom_lockdoor(ide_drive_t *drive, int lockflag, struct request_sense *sense) | |
1710 | { | |
4fe67178 | 1711 | struct cdrom_info *cd = drive->driver_data; |
1da177e4 LT |
1712 | struct request_sense my_sense; |
1713 | struct request req; | |
1714 | int stat; | |
1715 | ||
1716 | if (sense == NULL) | |
1717 | sense = &my_sense; | |
1718 | ||
1719 | /* If the drive cannot lock the door, just pretend. */ | |
2bc4cf2d | 1720 | if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) { |
1da177e4 LT |
1721 | stat = 0; |
1722 | } else { | |
1723 | cdrom_prepare_request(drive, &req); | |
1724 | req.sense = sense; | |
1725 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; | |
1726 | req.cmd[4] = lockflag ? 1 : 0; | |
1727 | stat = cdrom_queue_packet_command(drive, &req); | |
1728 | } | |
1729 | ||
1730 | /* If we got an illegal field error, the drive | |
1731 | probably cannot lock the door. */ | |
1732 | if (stat != 0 && | |
1733 | sense->sense_key == ILLEGAL_REQUEST && | |
1734 | (sense->asc == 0x24 || sense->asc == 0x20)) { | |
1735 | printk (KERN_ERR "%s: door locking not supported\n", | |
1736 | drive->name); | |
2bc4cf2d | 1737 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
1da177e4 LT |
1738 | stat = 0; |
1739 | } | |
1740 | ||
1741 | /* no medium, that's alright. */ | |
1742 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) | |
1743 | stat = 0; | |
1744 | ||
2bc4cf2d BZ |
1745 | if (stat == 0) { |
1746 | if (lockflag) | |
1747 | cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED; | |
1748 | else | |
1749 | cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED; | |
1750 | } | |
1da177e4 LT |
1751 | |
1752 | return stat; | |
1753 | } | |
1754 | ||
1755 | ||
1756 | /* Eject the disk if EJECTFLAG is 0. | |
1757 | If EJECTFLAG is 1, try to reload the disk. */ | |
1758 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, | |
1759 | struct request_sense *sense) | |
1760 | { | |
3f1b86d8 BZ |
1761 | struct cdrom_info *cd = drive->driver_data; |
1762 | struct cdrom_device_info *cdi = &cd->devinfo; | |
1da177e4 LT |
1763 | struct request req; |
1764 | char loej = 0x02; | |
1765 | ||
2bc4cf2d | 1766 | if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag) |
1da177e4 | 1767 | return -EDRIVE_CANT_DO_THIS; |
4fe67178 | 1768 | |
1da177e4 | 1769 | /* reload fails on some drives, if the tray is locked */ |
2bc4cf2d | 1770 | if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag) |
1da177e4 LT |
1771 | return 0; |
1772 | ||
1773 | cdrom_prepare_request(drive, &req); | |
1774 | ||
1775 | /* only tell drive to close tray if open, if it can do that */ | |
3f1b86d8 | 1776 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) |
1da177e4 LT |
1777 | loej = 0; |
1778 | ||
1779 | req.sense = sense; | |
1780 | req.cmd[0] = GPCMD_START_STOP_UNIT; | |
1781 | req.cmd[4] = loej | (ejectflag != 0); | |
1782 | return cdrom_queue_packet_command(drive, &req); | |
1783 | } | |
1784 | ||
1785 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, | |
1786 | unsigned long *sectors_per_frame, | |
1787 | struct request_sense *sense) | |
1788 | { | |
1789 | struct { | |
1790 | __u32 lba; | |
1791 | __u32 blocklen; | |
1792 | } capbuf; | |
1793 | ||
1794 | int stat; | |
1795 | struct request req; | |
1796 | ||
1797 | cdrom_prepare_request(drive, &req); | |
1798 | ||
1799 | req.sense = sense; | |
1800 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
1801 | req.data = (char *)&capbuf; | |
1802 | req.data_len = sizeof(capbuf); | |
4aff5e23 | 1803 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1804 | |
1805 | stat = cdrom_queue_packet_command(drive, &req); | |
1806 | if (stat == 0) { | |
1807 | *capacity = 1 + be32_to_cpu(capbuf.lba); | |
1808 | *sectors_per_frame = | |
1809 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; | |
1810 | } | |
1811 | ||
1812 | return stat; | |
1813 | } | |
1814 | ||
1815 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
1816 | int format, char *buf, int buflen, | |
1817 | struct request_sense *sense) | |
1818 | { | |
1819 | struct request req; | |
1820 | ||
1821 | cdrom_prepare_request(drive, &req); | |
1822 | ||
1823 | req.sense = sense; | |
1824 | req.data = buf; | |
1825 | req.data_len = buflen; | |
4aff5e23 | 1826 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1827 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
1828 | req.cmd[6] = trackno; | |
1829 | req.cmd[7] = (buflen >> 8); | |
1830 | req.cmd[8] = (buflen & 0xff); | |
1831 | req.cmd[9] = (format << 6); | |
1832 | ||
1833 | if (msf_flag) | |
1834 | req.cmd[1] = 2; | |
1835 | ||
1836 | return cdrom_queue_packet_command(drive, &req); | |
1837 | } | |
1838 | ||
1839 | ||
1840 | /* Try to read the entire TOC for the disk into our internal buffer. */ | |
1841 | static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense) | |
1842 | { | |
1843 | int stat, ntracks, i; | |
1844 | struct cdrom_info *info = drive->driver_data; | |
1845 | struct cdrom_device_info *cdi = &info->devinfo; | |
1846 | struct atapi_toc *toc = info->toc; | |
1847 | struct { | |
1848 | struct atapi_toc_header hdr; | |
1849 | struct atapi_toc_entry ent; | |
1850 | } ms_tmp; | |
1851 | long last_written; | |
1852 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
1853 | ||
1854 | if (toc == NULL) { | |
1855 | /* Try to allocate space. */ | |
2a91f3e5 | 1856 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 LT |
1857 | if (toc == NULL) { |
1858 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); | |
1859 | return -ENOMEM; | |
1860 | } | |
2a91f3e5 | 1861 | info->toc = toc; |
1da177e4 LT |
1862 | } |
1863 | ||
1864 | /* Check to see if the existing data is still valid. | |
1865 | If it is, just return. */ | |
1866 | (void) cdrom_check_status(drive, sense); | |
1867 | ||
2bc4cf2d | 1868 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
1da177e4 LT |
1869 | return 0; |
1870 | ||
1871 | /* Try to get the total cdrom capacity and sector size. */ | |
1872 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, | |
1873 | sense); | |
1874 | if (stat) | |
1875 | toc->capacity = 0x1fffff; | |
1876 | ||
1877 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af AC |
1878 | /* Save a private copy of te TOC capacity for error handling */ |
1879 | drive->probed_capacity = toc->capacity * sectors_per_frame; | |
1880 | ||
1da177e4 LT |
1881 | blk_queue_hardsect_size(drive->queue, |
1882 | sectors_per_frame << SECTOR_BITS); | |
1883 | ||
1884 | /* First read just the header, so we know how long the TOC is. */ | |
1885 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, | |
1886 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
1887 | if (stat) |
1888 | return stat; | |
1da177e4 | 1889 | |
2bc4cf2d | 1890 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1891 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1892 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1893 | } |
1da177e4 LT |
1894 | |
1895 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
1896 | if (ntracks <= 0) | |
1897 | return -EIO; | |
1898 | if (ntracks > MAX_TRACKS) | |
1899 | ntracks = MAX_TRACKS; | |
1900 | ||
1901 | /* Now read the whole schmeer. */ | |
1902 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, | |
1903 | (char *)&toc->hdr, | |
1904 | sizeof(struct atapi_toc_header) + | |
1905 | (ntracks + 1) * | |
1906 | sizeof(struct atapi_toc_entry), sense); | |
1907 | ||
1908 | if (stat && toc->hdr.first_track > 1) { | |
1909 | /* Cds with CDI tracks only don't have any TOC entries, | |
1910 | despite of this the returned values are | |
1911 | first_track == last_track = number of CDI tracks + 1, | |
1912 | so that this case is indistinguishable from the same | |
1913 | layout plus an additional audio track. | |
1914 | If we get an error for the regular case, we assume | |
1915 | a CDI without additional audio tracks. In this case | |
1916 | the readable TOC is empty (CDI tracks are not included) | |
96de0e25 | 1917 | and only holds the Leadout entry. Heiko Eißfeldt */ |
1da177e4 LT |
1918 | ntracks = 0; |
1919 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
1920 | (char *)&toc->hdr, | |
1921 | sizeof(struct atapi_toc_header) + | |
1922 | (ntracks + 1) * | |
1923 | sizeof(struct atapi_toc_entry), | |
1924 | sense); | |
cdf6000d | 1925 | if (stat) |
1da177e4 | 1926 | return stat; |
cdf6000d | 1927 | |
2bc4cf2d | 1928 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1929 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
1930 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); | |
cdf6000d | 1931 | } else { |
1da177e4 LT |
1932 | toc->hdr.first_track = CDROM_LEADOUT; |
1933 | toc->hdr.last_track = CDROM_LEADOUT; | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | if (stat) | |
1938 | return stat; | |
1939 | ||
1940 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); | |
1941 | ||
2bc4cf2d | 1942 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
9a6dc668 BZ |
1943 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
1944 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); | |
1da177e4 | 1945 | } |
1da177e4 | 1946 | |
cdf6000d | 1947 | for (i = 0; i <= ntracks; i++) { |
2bc4cf2d BZ |
1948 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1949 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) | |
9a6dc668 | 1950 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
1da177e4 LT |
1951 | msf_from_bcd(&toc->ent[i].addr.msf); |
1952 | } | |
1da177e4 LT |
1953 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, |
1954 | toc->ent[i].addr.msf.second, | |
1955 | toc->ent[i].addr.msf.frame); | |
1956 | } | |
1957 | ||
1958 | /* Read the multisession information. */ | |
1959 | if (toc->hdr.first_track != CDROM_LEADOUT) { | |
1960 | /* Read the multisession information. */ | |
1961 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, | |
1962 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
1963 | if (stat) |
1964 | return stat; | |
1da177e4 LT |
1965 | |
1966 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
1967 | } else { | |
1968 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; | |
1969 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ | |
1970 | } | |
1971 | ||
2bc4cf2d | 1972 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
1da177e4 LT |
1973 | /* Re-read multisession information using MSF format */ |
1974 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, | |
1975 | sizeof(ms_tmp), sense); | |
1976 | if (stat) | |
1977 | return stat; | |
1978 | ||
1979 | msf_from_bcd (&ms_tmp.ent.addr.msf); | |
1980 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, | |
1981 | ms_tmp.ent.addr.msf.second, | |
1982 | ms_tmp.ent.addr.msf.frame); | |
1983 | } | |
1da177e4 LT |
1984 | |
1985 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
1986 | ||
1987 | /* Now try to get the total cdrom capacity. */ | |
1988 | stat = cdrom_get_last_written(cdi, &last_written); | |
1989 | if (!stat && (last_written > toc->capacity)) { | |
1990 | toc->capacity = last_written; | |
1991 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 1992 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
1993 | } |
1994 | ||
1995 | /* Remember that we've read this stuff. */ | |
2bc4cf2d | 1996 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
1da177e4 LT |
1997 | |
1998 | return 0; | |
1999 | } | |
2000 | ||
ba3fab24 BZ |
2001 | static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg) |
2002 | { | |
2003 | struct cdrom_info *cd = drive->driver_data; | |
2004 | struct cdrom_tochdr *tochdr = arg; | |
2005 | struct atapi_toc *toc; | |
2006 | int stat; | |
2007 | ||
2008 | /* Make sure our saved TOC is valid. */ | |
2009 | stat = cdrom_read_toc(drive, NULL); | |
2010 | if (stat) | |
2011 | return stat; | |
2012 | ||
2013 | toc = cd->toc; | |
2014 | tochdr->cdth_trk0 = toc->hdr.first_track; | |
2015 | tochdr->cdth_trk1 = toc->hdr.last_track; | |
2016 | ||
2017 | return 0; | |
2018 | } | |
1da177e4 | 2019 | |
1da177e4 LT |
2020 | static int cdrom_get_toc_entry(ide_drive_t *drive, int track, |
2021 | struct atapi_toc_entry **ent) | |
2022 | { | |
2023 | struct cdrom_info *info = drive->driver_data; | |
2024 | struct atapi_toc *toc = info->toc; | |
2025 | int ntracks; | |
2026 | ||
2027 | /* | |
2028 | * don't serve cached data, if the toc isn't valid | |
2029 | */ | |
2bc4cf2d | 2030 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0) |
1da177e4 LT |
2031 | return -EINVAL; |
2032 | ||
2033 | /* Check validity of requested track number. */ | |
2034 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
2035 | if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0; | |
2036 | if (track == CDROM_LEADOUT) | |
2037 | *ent = &toc->ent[ntracks]; | |
2038 | else if (track < toc->hdr.first_track || | |
2039 | track > toc->hdr.last_track) | |
2040 | return -EINVAL; | |
2041 | else | |
2042 | *ent = &toc->ent[track - toc->hdr.first_track]; | |
2043 | ||
2044 | return 0; | |
2045 | } | |
2046 | ||
ba3fab24 BZ |
2047 | static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg) |
2048 | { | |
2049 | struct cdrom_tocentry *tocentry = arg; | |
2050 | struct atapi_toc_entry *toce; | |
2051 | int stat; | |
2052 | ||
2053 | stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce); | |
2054 | if (stat) | |
2055 | return stat; | |
2056 | ||
2057 | tocentry->cdte_ctrl = toce->control; | |
2058 | tocentry->cdte_adr = toce->adr; | |
2059 | if (tocentry->cdte_format == CDROM_MSF) { | |
2060 | lba_to_msf(toce->addr.lba, | |
2061 | &tocentry->cdte_addr.msf.minute, | |
2062 | &tocentry->cdte_addr.msf.second, | |
2063 | &tocentry->cdte_addr.msf.frame); | |
2064 | } else | |
2065 | tocentry->cdte_addr.lba = toce->addr.lba; | |
2066 | ||
2067 | return 0; | |
2068 | } | |
2069 | ||
2070 | static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg) | |
2071 | { | |
2072 | struct cdrom_ti *ti = arg; | |
2073 | struct atapi_toc_entry *first_toc, *last_toc; | |
2074 | unsigned long lba_start, lba_end; | |
2075 | int stat; | |
a891b144 BZ |
2076 | struct request rq; |
2077 | struct request_sense sense; | |
ba3fab24 BZ |
2078 | |
2079 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc); | |
2080 | if (stat) | |
2081 | return stat; | |
2082 | ||
2083 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk1, &last_toc); | |
2084 | if (stat) | |
2085 | return stat; | |
2086 | ||
2087 | if (ti->cdti_trk1 != CDROM_LEADOUT) | |
2088 | ++last_toc; | |
2089 | lba_start = first_toc->addr.lba; | |
2090 | lba_end = last_toc->addr.lba; | |
2091 | ||
2092 | if (lba_end <= lba_start) | |
2093 | return -EINVAL; | |
2094 | ||
a891b144 BZ |
2095 | cdrom_prepare_request(drive, &rq); |
2096 | ||
2097 | rq.sense = &sense; | |
2098 | rq.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
2099 | lba_to_msf(lba_start, &rq.cmd[3], &rq.cmd[4], &rq.cmd[5]); | |
2100 | lba_to_msf(lba_end - 1, &rq.cmd[6], &rq.cmd[7], &rq.cmd[8]); | |
2101 | ||
2102 | return cdrom_queue_packet_command(drive, &rq); | |
ba3fab24 BZ |
2103 | } |
2104 | ||
1da177e4 LT |
2105 | /* the generic packet interface to cdrom.c */ |
2106 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, | |
2107 | struct packet_command *cgc) | |
2108 | { | |
2109 | struct request req; | |
2a91f3e5 | 2110 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2111 | |
2112 | if (cgc->timeout <= 0) | |
2113 | cgc->timeout = ATAPI_WAIT_PC; | |
2114 | ||
2115 | /* here we queue the commands from the uniform CD-ROM | |
2116 | layer. the packet must be complete, as we do not | |
2117 | touch it at all. */ | |
2118 | cdrom_prepare_request(drive, &req); | |
2119 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); | |
2120 | if (cgc->sense) | |
2121 | memset(cgc->sense, 0, sizeof(struct request_sense)); | |
2122 | req.data = cgc->buffer; | |
2123 | req.data_len = cgc->buflen; | |
2124 | req.timeout = cgc->timeout; | |
2125 | ||
2126 | if (cgc->quiet) | |
4aff5e23 | 2127 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
2128 | |
2129 | req.sense = cgc->sense; | |
2130 | cgc->stat = cdrom_queue_packet_command(drive, &req); | |
2131 | if (!cgc->stat) | |
2132 | cgc->buflen -= req.data_len; | |
2133 | return cgc->stat; | |
2134 | } | |
2135 | ||
ba3fab24 BZ |
2136 | static int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi, |
2137 | unsigned int cmd, void *arg) | |
1da177e4 | 2138 | { |
2a91f3e5 | 2139 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2140 | |
2141 | switch (cmd) { | |
2142 | /* | |
2143 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since | |
2144 | * atapi doesn't support it | |
2145 | */ | |
ba3fab24 BZ |
2146 | case CDROMPLAYTRKIND: |
2147 | return ide_cd_fake_play_trkind(drive, arg); | |
2148 | case CDROMREADTOCHDR: | |
2149 | return ide_cd_read_tochdr(drive, arg); | |
2150 | case CDROMREADTOCENTRY: | |
2151 | return ide_cd_read_tocentry(drive, arg); | |
1da177e4 LT |
2152 | default: |
2153 | return -EINVAL; | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | static | |
2158 | int ide_cdrom_reset (struct cdrom_device_info *cdi) | |
2159 | { | |
2a91f3e5 | 2160 | ide_drive_t *drive = cdi->handle; |
0ba11211 | 2161 | struct cdrom_info *cd = drive->driver_data; |
1da177e4 LT |
2162 | struct request_sense sense; |
2163 | struct request req; | |
2164 | int ret; | |
2165 | ||
2166 | cdrom_prepare_request(drive, &req); | |
4aff5e23 JA |
2167 | req.cmd_type = REQ_TYPE_SPECIAL; |
2168 | req.cmd_flags = REQ_QUIET; | |
1da177e4 LT |
2169 | ret = ide_do_drive_cmd(drive, &req, ide_wait); |
2170 | ||
2171 | /* | |
2172 | * A reset will unlock the door. If it was previously locked, | |
2173 | * lock it again. | |
2174 | */ | |
2bc4cf2d | 2175 | if (cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) |
1da177e4 LT |
2176 | (void) cdrom_lockdoor(drive, 1, &sense); |
2177 | ||
2178 | return ret; | |
2179 | } | |
2180 | ||
2181 | ||
2182 | static | |
2183 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) | |
2184 | { | |
2a91f3e5 | 2185 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2186 | struct request_sense sense; |
2187 | ||
2188 | if (position) { | |
2189 | int stat = cdrom_lockdoor(drive, 0, &sense); | |
2a91f3e5 JJ |
2190 | if (stat) |
2191 | return stat; | |
1da177e4 LT |
2192 | } |
2193 | ||
2194 | return cdrom_eject(drive, !position, &sense); | |
2195 | } | |
2196 | ||
2197 | static | |
2198 | int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock) | |
2199 | { | |
2a91f3e5 | 2200 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2201 | return cdrom_lockdoor(drive, lock, NULL); |
2202 | } | |
2203 | ||
455d80a9 | 2204 | static int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
9235e68b EP |
2205 | { |
2206 | struct cdrom_info *info = drive->driver_data; | |
2207 | struct cdrom_device_info *cdi = &info->devinfo; | |
2208 | struct packet_command cgc; | |
455d80a9 | 2209 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
9235e68b | 2210 | |
e59724c7 | 2211 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
455d80a9 | 2212 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
9235e68b | 2213 | |
455d80a9 | 2214 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
9235e68b EP |
2215 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
2216 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); | |
2217 | if (!stat) | |
2218 | break; | |
2219 | } while (--attempts); | |
2220 | return stat; | |
2221 | } | |
2222 | ||
455d80a9 | 2223 | static void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
9235e68b | 2224 | { |
4fe67178 | 2225 | struct cdrom_info *cd = drive->driver_data; |
481c8c64 BZ |
2226 | u16 curspeed, maxspeed; |
2227 | ||
455d80a9 BZ |
2228 | curspeed = *(u16 *)&buf[8 + 14]; |
2229 | maxspeed = *(u16 *)&buf[8 + 8]; | |
2230 | ||
e59724c7 | 2231 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
455d80a9 BZ |
2232 | curspeed = le16_to_cpu(curspeed); |
2233 | maxspeed = le16_to_cpu(maxspeed); | |
9235e68b | 2234 | } else { |
455d80a9 BZ |
2235 | curspeed = be16_to_cpu(curspeed); |
2236 | maxspeed = be16_to_cpu(maxspeed); | |
9235e68b | 2237 | } |
481c8c64 | 2238 | |
2bc4cf2d BZ |
2239 | cd->current_speed = (curspeed + (176/2)) / 176; |
2240 | cd->max_speed = (maxspeed + (176/2)) / 176; | |
9235e68b EP |
2241 | } |
2242 | ||
5c68429d BZ |
2243 | /* |
2244 | * ATAPI devices are free to select the speed you request or any slower | |
2245 | * rate. :-( Requesting too fast a speed will _not_ produce an error. | |
2246 | */ | |
2247 | static int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed) | |
1da177e4 | 2248 | { |
2a91f3e5 | 2249 | ide_drive_t *drive = cdi->handle; |
0ba11211 | 2250 | struct cdrom_info *cd = drive->driver_data; |
5c68429d | 2251 | struct request rq; |
1da177e4 | 2252 | struct request_sense sense; |
455d80a9 | 2253 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
1da177e4 LT |
2254 | int stat; |
2255 | ||
5c68429d BZ |
2256 | cdrom_prepare_request(drive, &rq); |
2257 | ||
2258 | rq.sense = &sense; | |
2259 | ||
2260 | if (speed == 0) | |
2261 | speed = 0xffff; /* set to max */ | |
2262 | else | |
2263 | speed *= 177; /* Nx to kbytes/s */ | |
2264 | ||
2265 | rq.cmd[0] = GPCMD_SET_SPEED; | |
2266 | /* Read Drive speed in kbytes/second MSB/LSB */ | |
2267 | rq.cmd[2] = (speed >> 8) & 0xff; | |
2268 | rq.cmd[3] = speed & 0xff; | |
2269 | if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) != | |
2270 | (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) { | |
2271 | /* Write Drive speed in kbytes/second MSB/LSB */ | |
2272 | rq.cmd[4] = (speed >> 8) & 0xff; | |
2273 | rq.cmd[5] = speed & 0xff; | |
2274 | } | |
2275 | ||
2276 | stat = cdrom_queue_packet_command(drive, &rq); | |
1da177e4 | 2277 | |
455d80a9 BZ |
2278 | if (!ide_cdrom_get_capabilities(drive, buf)) { |
2279 | ide_cdrom_update_speed(drive, buf); | |
2bc4cf2d | 2280 | cdi->speed = cd->current_speed; |
9235e68b | 2281 | } |
5c68429d BZ |
2282 | |
2283 | return 0; | |
1da177e4 LT |
2284 | } |
2285 | ||
2286 | /* | |
2287 | * add logic to try GET_EVENT command first to check for media and tray | |
2288 | * status. this should be supported by newer cd-r/w and all DVD etc | |
2289 | * drives | |
2290 | */ | |
2291 | static | |
2292 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) | |
2293 | { | |
2a91f3e5 | 2294 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2295 | struct media_event_desc med; |
2296 | struct request_sense sense; | |
2297 | int stat; | |
2298 | ||
2299 | if (slot_nr != CDSL_CURRENT) | |
2300 | return -EINVAL; | |
2301 | ||
2302 | stat = cdrom_check_status(drive, &sense); | |
2303 | if (!stat || sense.sense_key == UNIT_ATTENTION) | |
2304 | return CDS_DISC_OK; | |
2305 | ||
2306 | if (!cdrom_get_media_event(cdi, &med)) { | |
2307 | if (med.media_present) | |
2308 | return CDS_DISC_OK; | |
2309 | else if (med.door_open) | |
2310 | return CDS_TRAY_OPEN; | |
2311 | else | |
2312 | return CDS_NO_DISC; | |
2313 | } | |
2314 | ||
2315 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) | |
2316 | return CDS_DISC_OK; | |
2317 | ||
2318 | /* | |
2319 | * If not using Mt Fuji extended media tray reports, | |
2320 | * just return TRAY_OPEN since ATAPI doesn't provide | |
2321 | * any other way to detect this... | |
2322 | */ | |
2323 | if (sense.sense_key == NOT_READY) { | |
dbe217af AC |
2324 | if (sense.asc == 0x3a && sense.ascq == 1) |
2325 | return CDS_NO_DISC; | |
2326 | else | |
2327 | return CDS_TRAY_OPEN; | |
1da177e4 | 2328 | } |
1da177e4 LT |
2329 | return CDS_DRIVE_NOT_READY; |
2330 | } | |
2331 | ||
2332 | static | |
2333 | int ide_cdrom_get_last_session (struct cdrom_device_info *cdi, | |
2334 | struct cdrom_multisession *ms_info) | |
2335 | { | |
2336 | struct atapi_toc *toc; | |
2a91f3e5 | 2337 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2338 | struct cdrom_info *info = drive->driver_data; |
2339 | struct request_sense sense; | |
2340 | int ret; | |
2341 | ||
2bc4cf2d | 2342 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0 || info->toc == NULL) |
1da177e4 LT |
2343 | if ((ret = cdrom_read_toc(drive, &sense))) |
2344 | return ret; | |
2345 | ||
2346 | toc = info->toc; | |
2347 | ms_info->addr.lba = toc->last_session_lba; | |
2348 | ms_info->xa_flag = toc->xa_flag; | |
2349 | ||
2350 | return 0; | |
2351 | } | |
2352 | ||
53126b91 BZ |
2353 | static int ide_cdrom_get_mcn(struct cdrom_device_info *cdi, |
2354 | struct cdrom_mcn *mcn_info) | |
1da177e4 | 2355 | { |
2a91f3e5 | 2356 | ide_drive_t *drive = cdi->handle; |
53126b91 BZ |
2357 | int stat, mcnlen; |
2358 | struct request rq; | |
2359 | char buf[24]; | |
2360 | ||
2361 | cdrom_prepare_request(drive, &rq); | |
1da177e4 | 2362 | |
53126b91 BZ |
2363 | rq.data = buf; |
2364 | rq.data_len = sizeof(buf); | |
2365 | ||
2366 | rq.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
2367 | rq.cmd[1] = 2; /* MSF addressing */ | |
2368 | rq.cmd[2] = 0x40; /* request subQ data */ | |
2369 | rq.cmd[3] = 2; /* format */ | |
2370 | rq.cmd[8] = sizeof(buf); | |
2371 | ||
2372 | stat = cdrom_queue_packet_command(drive, &rq); | |
2373 | if (stat) | |
1da177e4 LT |
2374 | return stat; |
2375 | ||
53126b91 BZ |
2376 | mcnlen = sizeof(mcn_info->medium_catalog_number) - 1; |
2377 | memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen); | |
2378 | mcn_info->medium_catalog_number[mcnlen] = '\0'; | |
1da177e4 LT |
2379 | |
2380 | return 0; | |
2381 | } | |
2382 | ||
1da177e4 LT |
2383 | /**************************************************************************** |
2384 | * Other driver requests (open, close, check media change). | |
2385 | */ | |
2386 | ||
2387 | static | |
2388 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, | |
2389 | int slot_nr) | |
2390 | { | |
2a91f3e5 | 2391 | ide_drive_t *drive = cdi->handle; |
0ba11211 | 2392 | struct cdrom_info *cd = drive->driver_data; |
1da177e4 | 2393 | int retval; |
0ba11211 | 2394 | |
1da177e4 LT |
2395 | if (slot_nr == CDSL_CURRENT) { |
2396 | (void) cdrom_check_status(drive, NULL); | |
2bc4cf2d BZ |
2397 | retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0; |
2398 | cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED; | |
1da177e4 LT |
2399 | return retval; |
2400 | } else { | |
2401 | return -EINVAL; | |
2402 | } | |
2403 | } | |
2404 | ||
2405 | ||
2406 | static | |
2407 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) | |
2408 | { | |
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | /* | |
2413 | * Close down the device. Invalidate all cached blocks. | |
2414 | */ | |
2415 | ||
2416 | static | |
2417 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) | |
2418 | { | |
2419 | ide_drive_t *drive = cdi->handle; | |
0ba11211 | 2420 | struct cdrom_info *cd = drive->driver_data; |
1da177e4 LT |
2421 | |
2422 | if (!cdi->use_count) | |
2bc4cf2d | 2423 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; |
1da177e4 LT |
2424 | } |
2425 | ||
20e7f7ef BZ |
2426 | #define IDE_CD_CAPABILITIES \ |
2427 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ | |
2428 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ | |
2429 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ | |
2430 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ | |
2431 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) | |
1da177e4 | 2432 | |
1da177e4 LT |
2433 | static struct cdrom_device_ops ide_cdrom_dops = { |
2434 | .open = ide_cdrom_open_real, | |
2435 | .release = ide_cdrom_release_real, | |
2436 | .drive_status = ide_cdrom_drive_status, | |
2437 | .media_changed = ide_cdrom_check_media_change_real, | |
2438 | .tray_move = ide_cdrom_tray_move, | |
2439 | .lock_door = ide_cdrom_lock_door, | |
2440 | .select_speed = ide_cdrom_select_speed, | |
2441 | .get_last_session = ide_cdrom_get_last_session, | |
2442 | .get_mcn = ide_cdrom_get_mcn, | |
2443 | .reset = ide_cdrom_reset, | |
2444 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
20e7f7ef | 2445 | .capability = IDE_CD_CAPABILITIES, |
1da177e4 LT |
2446 | .generic_packet = ide_cdrom_packet, |
2447 | }; | |
2448 | ||
2449 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) | |
2450 | { | |
2451 | struct cdrom_info *info = drive->driver_data; | |
2452 | struct cdrom_device_info *devinfo = &info->devinfo; | |
2453 | ||
2454 | devinfo->ops = &ide_cdrom_dops; | |
2bc4cf2d | 2455 | devinfo->speed = info->current_speed; |
1da177e4 | 2456 | devinfo->capacity = nslots; |
2a91f3e5 | 2457 | devinfo->handle = drive; |
1da177e4 | 2458 | strcpy(devinfo->name, drive->name); |
1da177e4 | 2459 | |
2bc4cf2d | 2460 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
3cbd814e BZ |
2461 | devinfo->mask |= CDC_SELECT_SPEED; |
2462 | ||
1da177e4 LT |
2463 | devinfo->disk = info->disk; |
2464 | return register_cdrom(devinfo); | |
2465 | } | |
2466 | ||
1da177e4 LT |
2467 | static |
2468 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) | |
2469 | { | |
4fe67178 BZ |
2470 | struct cdrom_info *cd = drive->driver_data; |
2471 | struct cdrom_device_info *cdi = &cd->devinfo; | |
455d80a9 BZ |
2472 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
2473 | mechtype_t mechtype; | |
1da177e4 LT |
2474 | int nslots = 1; |
2475 | ||
3f1b86d8 BZ |
2476 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
2477 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | | |
2478 | CDC_MO_DRIVE | CDC_RAM); | |
2479 | ||
1da177e4 | 2480 | if (drive->media == ide_optical) { |
3f1b86d8 | 2481 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
1da177e4 LT |
2482 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
2483 | return nslots; | |
2484 | } | |
2485 | ||
e59724c7 | 2486 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
2bc4cf2d | 2487 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
3f1b86d8 | 2488 | cdi->mask &= ~CDC_PLAY_AUDIO; |
1da177e4 LT |
2489 | return nslots; |
2490 | } | |
2491 | ||
2492 | /* | |
2493 | * we have to cheat a little here. the packet will eventually | |
2494 | * be queued with ide_cdrom_packet(), which extracts the | |
2495 | * drive from cdi->handle. Since this device hasn't been | |
2496 | * registered with the Uniform layer yet, it can't do this. | |
2497 | * Same goes for cdi->ops. | |
2498 | */ | |
2a91f3e5 | 2499 | cdi->handle = drive; |
1da177e4 LT |
2500 | cdi->ops = &ide_cdrom_dops; |
2501 | ||
455d80a9 | 2502 | if (ide_cdrom_get_capabilities(drive, buf)) |
1da177e4 LT |
2503 | return 0; |
2504 | ||
455d80a9 | 2505 | if ((buf[8 + 6] & 0x01) == 0) |
2bc4cf2d | 2506 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
455d80a9 | 2507 | if (buf[8 + 6] & 0x08) |
2bc4cf2d | 2508 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
455d80a9 | 2509 | if (buf[8 + 3] & 0x01) |
3f1b86d8 | 2510 | cdi->mask &= ~CDC_CD_R; |
455d80a9 | 2511 | if (buf[8 + 3] & 0x02) |
3f1b86d8 | 2512 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
455d80a9 | 2513 | if (buf[8 + 2] & 0x38) |
3f1b86d8 | 2514 | cdi->mask &= ~CDC_DVD; |
455d80a9 | 2515 | if (buf[8 + 3] & 0x20) |
3f1b86d8 | 2516 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
455d80a9 | 2517 | if (buf[8 + 3] & 0x10) |
3f1b86d8 | 2518 | cdi->mask &= ~CDC_DVD_R; |
e59724c7 | 2519 | if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK)) |
3f1b86d8 | 2520 | cdi->mask &= ~CDC_PLAY_AUDIO; |
455d80a9 BZ |
2521 | |
2522 | mechtype = buf[8 + 6] >> 5; | |
2523 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) | |
3f1b86d8 | 2524 | cdi->mask |= CDC_CLOSE_TRAY; |
1da177e4 | 2525 | |
1da177e4 | 2526 | if (cdi->sanyo_slot > 0) { |
3f1b86d8 | 2527 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 | 2528 | nslots = 3; |
cdf6000d BZ |
2529 | } else if (mechtype == mechtype_individual_changer || |
2530 | mechtype == mechtype_cartridge_changer) { | |
2609d06d BZ |
2531 | nslots = cdrom_number_of_slots(cdi); |
2532 | if (nslots > 1) | |
3f1b86d8 | 2533 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 LT |
2534 | } |
2535 | ||
455d80a9 | 2536 | ide_cdrom_update_speed(drive, buf); |
4fe67178 | 2537 | |
1da177e4 | 2538 | printk(KERN_INFO "%s: ATAPI", drive->name); |
4fe67178 BZ |
2539 | |
2540 | /* don't print speed if the drive reported 0 */ | |
2bc4cf2d BZ |
2541 | if (cd->max_speed) |
2542 | printk(KERN_CONT " %dX", cd->max_speed); | |
4fe67178 | 2543 | |
3f1b86d8 | 2544 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
1da177e4 | 2545 | |
3f1b86d8 BZ |
2546 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
2547 | printk(KERN_CONT " DVD%s%s", | |
2548 | (cdi->mask & CDC_DVD_R) ? "" : "-R", | |
2549 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); | |
1da177e4 | 2550 | |
3f1b86d8 BZ |
2551 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
2552 | printk(KERN_CONT " CD%s%s", | |
2553 | (cdi->mask & CDC_CD_R) ? "" : "-R", | |
2554 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); | |
1da177e4 | 2555 | |
3f1b86d8 BZ |
2556 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
2557 | printk(KERN_CONT " changer w/%d slots", nslots); | |
2558 | else | |
2559 | printk(KERN_CONT " drive"); | |
1da177e4 | 2560 | |
455d80a9 | 2561 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12])); |
1da177e4 LT |
2562 | |
2563 | return nslots; | |
2564 | } | |
2565 | ||
7662d046 | 2566 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2567 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
2568 | { | |
1497943e | 2569 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
1da177e4 | 2570 | } |
7662d046 BZ |
2571 | #else |
2572 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } | |
2573 | #endif | |
1da177e4 LT |
2574 | |
2575 | /* | |
2576 | * standard prep_rq_fn that builds 10 byte cmds | |
2577 | */ | |
165125e1 | 2578 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
2579 | { |
2580 | int hard_sect = queue_hardsect_size(q); | |
2581 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
2582 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
2583 | ||
2584 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
2585 | ||
2586 | if (rq_data_dir(rq) == READ) | |
2587 | rq->cmd[0] = GPCMD_READ_10; | |
2588 | else | |
2589 | rq->cmd[0] = GPCMD_WRITE_10; | |
2590 | ||
2591 | /* | |
2592 | * fill in lba | |
2593 | */ | |
2594 | rq->cmd[2] = (block >> 24) & 0xff; | |
2595 | rq->cmd[3] = (block >> 16) & 0xff; | |
2596 | rq->cmd[4] = (block >> 8) & 0xff; | |
2597 | rq->cmd[5] = block & 0xff; | |
2598 | ||
2599 | /* | |
2600 | * and transfer length | |
2601 | */ | |
2602 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
2603 | rq->cmd[8] = blocks & 0xff; | |
2604 | rq->cmd_len = 10; | |
2605 | return BLKPREP_OK; | |
2606 | } | |
2607 | ||
2608 | /* | |
2609 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
2610 | * This transform handles the few exceptions. | |
2611 | */ | |
2612 | static int ide_cdrom_prep_pc(struct request *rq) | |
2613 | { | |
2614 | u8 *c = rq->cmd; | |
2615 | ||
2616 | /* | |
2617 | * Transform 6-byte read/write commands to the 10-byte version | |
2618 | */ | |
2619 | if (c[0] == READ_6 || c[0] == WRITE_6) { | |
2620 | c[8] = c[4]; | |
2621 | c[5] = c[3]; | |
2622 | c[4] = c[2]; | |
2623 | c[3] = c[1] & 0x1f; | |
2624 | c[2] = 0; | |
2625 | c[1] &= 0xe0; | |
2626 | c[0] += (READ_10 - READ_6); | |
2627 | rq->cmd_len = 10; | |
2628 | return BLKPREP_OK; | |
2629 | } | |
2630 | ||
2631 | /* | |
2632 | * it's silly to pretend we understand 6-byte sense commands, just | |
2633 | * reject with ILLEGAL_REQUEST and the caller should take the | |
2634 | * appropriate action | |
2635 | */ | |
2636 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
2637 | rq->errors = ILLEGAL_REQUEST; | |
2638 | return BLKPREP_KILL; | |
2639 | } | |
2640 | ||
2641 | return BLKPREP_OK; | |
2642 | } | |
2643 | ||
165125e1 | 2644 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 2645 | { |
4aff5e23 | 2646 | if (blk_fs_request(rq)) |
1da177e4 | 2647 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 2648 | else if (blk_pc_request(rq)) |
1da177e4 LT |
2649 | return ide_cdrom_prep_pc(rq); |
2650 | ||
2651 | return 0; | |
2652 | } | |
2653 | ||
e59724c7 BZ |
2654 | struct cd_list_entry { |
2655 | const char *id_model; | |
2656 | const char *id_firmware; | |
2657 | unsigned int cd_flags; | |
2658 | }; | |
2659 | ||
2660 | static const struct cd_list_entry ide_cd_quirks_list[] = { | |
2661 | /* Limit transfer size per interrupt. */ | |
2662 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
2663 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, | |
2664 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ | |
2665 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, | |
2666 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ | |
2667 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | | |
2668 | IDE_CD_FLAG_PRE_ATAPI12, }, | |
2669 | /* Vertos 300, some versions of this drive like to talk BCD. */ | |
2670 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, | |
2671 | /* Vertos 600 ESD. */ | |
2672 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, | |
2673 | /* | |
2674 | * Sanyo 3 CD changer uses a non-standard command for CD changing | |
2675 | * (by default standard ATAPI support for CD changers is used). | |
2676 | */ | |
2677 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
2678 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
2679 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, | |
2680 | /* Stingray 8X CD-ROM. */ | |
2681 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, | |
2682 | /* | |
2683 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length | |
2684 | * mode sense page capabilities size, but older drives break. | |
2685 | */ | |
2686 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
2687 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, | |
2688 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ | |
2689 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, | |
2690 | /* | |
2691 | * Some drives used by Apple don't advertise audio play | |
2692 | * but they do support reading TOC & audio datas. | |
2693 | */ | |
2694 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2695 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2696 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2697 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, | |
2698 | { NULL, NULL, 0 } | |
2699 | }; | |
2700 | ||
2701 | static unsigned int ide_cd_flags(struct hd_driveid *id) | |
2702 | { | |
2703 | const struct cd_list_entry *cle = ide_cd_quirks_list; | |
2704 | ||
2705 | while (cle->id_model) { | |
2706 | if (strcmp(cle->id_model, id->model) == 0 && | |
2707 | (cle->id_firmware == NULL || | |
2708 | strstr(id->fw_rev, cle->id_firmware))) | |
2709 | return cle->cd_flags; | |
2710 | cle++; | |
2711 | } | |
2712 | ||
2713 | return 0; | |
2714 | } | |
2715 | ||
1da177e4 LT |
2716 | static |
2717 | int ide_cdrom_setup (ide_drive_t *drive) | |
2718 | { | |
4fe67178 BZ |
2719 | struct cdrom_info *cd = drive->driver_data; |
2720 | struct cdrom_device_info *cdi = &cd->devinfo; | |
e59724c7 | 2721 | struct hd_driveid *id = drive->id; |
1da177e4 LT |
2722 | int nslots; |
2723 | ||
2724 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); | |
2725 | blk_queue_dma_alignment(drive->queue, 31); | |
2726 | drive->queue->unplug_delay = (1 * HZ) / 1000; | |
2727 | if (!drive->queue->unplug_delay) | |
2728 | drive->queue->unplug_delay = 1; | |
2729 | ||
2730 | drive->special.all = 0; | |
2731 | ||
e59724c7 BZ |
2732 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
2733 | ide_cd_flags(id); | |
1da177e4 | 2734 | |
e59724c7 | 2735 | if ((id->config & 0x0060) == 0x20) |
2bc4cf2d | 2736 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
e59724c7 BZ |
2737 | |
2738 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && | |
2739 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d BZ |
2740 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
2741 | IDE_CD_FLAG_TOCADDR_AS_BCD); | |
e59724c7 BZ |
2742 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
2743 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') | |
2bc4cf2d | 2744 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
e59724c7 BZ |
2745 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
2746 | cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */ | |
1da177e4 | 2747 | |
1da177e4 LT |
2748 | nslots = ide_cdrom_probe_capabilities (drive); |
2749 | ||
2750 | /* | |
2751 | * set correct block size | |
2752 | */ | |
2753 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); | |
2754 | ||
2755 | if (drive->autotune == IDE_TUNE_DEFAULT || | |
2756 | drive->autotune == IDE_TUNE_AUTO) | |
2757 | drive->dsc_overlap = (drive->next != drive); | |
1da177e4 LT |
2758 | |
2759 | if (ide_cdrom_register(drive, nslots)) { | |
2760 | printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); | |
4fe67178 | 2761 | cd->devinfo.handle = NULL; |
1da177e4 LT |
2762 | return 1; |
2763 | } | |
2764 | ide_cdrom_add_settings(drive); | |
2765 | return 0; | |
2766 | } | |
2767 | ||
ecfd80e4 | 2768 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2769 | static |
2770 | sector_t ide_cdrom_capacity (ide_drive_t *drive) | |
2771 | { | |
2772 | unsigned long capacity, sectors_per_frame; | |
2773 | ||
2774 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
2775 | return 0; | |
2776 | ||
2777 | return capacity * sectors_per_frame; | |
2778 | } | |
d97b3214 | 2779 | #endif |
1da177e4 | 2780 | |
4031bbe4 | 2781 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
2782 | { |
2783 | struct cdrom_info *info = drive->driver_data; | |
2784 | ||
7662d046 | 2785 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
2786 | |
2787 | del_gendisk(info->disk); | |
2788 | ||
2789 | ide_cd_put(info); | |
1da177e4 LT |
2790 | } |
2791 | ||
2792 | static void ide_cd_release(struct kref *kref) | |
2793 | { | |
2794 | struct cdrom_info *info = to_ide_cd(kref); | |
2795 | struct cdrom_device_info *devinfo = &info->devinfo; | |
2796 | ide_drive_t *drive = info->drive; | |
2797 | struct gendisk *g = info->disk; | |
2798 | ||
6044ec88 JJ |
2799 | kfree(info->buffer); |
2800 | kfree(info->toc); | |
1da177e4 LT |
2801 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
2802 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " | |
2803 | "driver.\n", __FUNCTION__, drive->name); | |
2804 | drive->dsc_overlap = 0; | |
2805 | drive->driver_data = NULL; | |
2806 | blk_queue_prep_rq(drive->queue, NULL); | |
2807 | g->private_data = NULL; | |
2808 | put_disk(g); | |
2809 | kfree(info); | |
2810 | } | |
2811 | ||
4031bbe4 | 2812 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 2813 | |
ecfd80e4 | 2814 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2815 | static int proc_idecd_read_capacity |
2816 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
2817 | { | |
2a91f3e5 | 2818 | ide_drive_t *drive = data; |
1da177e4 LT |
2819 | int len; |
2820 | ||
2821 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); | |
2822 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
2823 | } | |
2824 | ||
2825 | static ide_proc_entry_t idecd_proc[] = { | |
2826 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
2827 | { NULL, 0, NULL, NULL } | |
2828 | }; | |
1da177e4 LT |
2829 | #endif |
2830 | ||
2831 | static ide_driver_t ide_cdrom_driver = { | |
8604affd | 2832 | .gen_driver = { |
4ef3b8f4 | 2833 | .owner = THIS_MODULE, |
8604affd BZ |
2834 | .name = "ide-cdrom", |
2835 | .bus = &ide_bus_type, | |
8604affd | 2836 | }, |
4031bbe4 RK |
2837 | .probe = ide_cd_probe, |
2838 | .remove = ide_cd_remove, | |
1da177e4 LT |
2839 | .version = IDECD_VERSION, |
2840 | .media = ide_cdrom, | |
1da177e4 | 2841 | .supports_dsc_overlap = 1, |
1da177e4 LT |
2842 | .do_request = ide_do_rw_cdrom, |
2843 | .end_request = ide_end_request, | |
2844 | .error = __ide_error, | |
2845 | .abort = __ide_abort, | |
7662d046 | 2846 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 2847 | .proc = idecd_proc, |
7662d046 | 2848 | #endif |
1da177e4 LT |
2849 | }; |
2850 | ||
2851 | static int idecd_open(struct inode * inode, struct file * file) | |
2852 | { | |
2853 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
2854 | struct cdrom_info *info; | |
1da177e4 LT |
2855 | int rc = -ENOMEM; |
2856 | ||
2857 | if (!(info = ide_cd_get(disk))) | |
2858 | return -ENXIO; | |
2859 | ||
1da177e4 | 2860 | if (!info->buffer) |
c94964a4 BZ |
2861 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); |
2862 | ||
2863 | if (info->buffer) | |
2864 | rc = cdrom_open(&info->devinfo, inode, file); | |
1da177e4 LT |
2865 | |
2866 | if (rc < 0) | |
2867 | ide_cd_put(info); | |
2868 | ||
2869 | return rc; | |
2870 | } | |
2871 | ||
2872 | static int idecd_release(struct inode * inode, struct file * file) | |
2873 | { | |
2874 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
2875 | struct cdrom_info *info = ide_cd_g(disk); | |
1da177e4 LT |
2876 | |
2877 | cdrom_release (&info->devinfo, file); | |
1da177e4 LT |
2878 | |
2879 | ide_cd_put(info); | |
2880 | ||
2881 | return 0; | |
2882 | } | |
2883 | ||
6a2900b6 CH |
2884 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
2885 | { | |
2886 | struct packet_command cgc; | |
2887 | char buffer[16]; | |
2888 | int stat; | |
2889 | char spindown; | |
2890 | ||
2891 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
2892 | return -EFAULT; | |
2893 | ||
2894 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2895 | ||
2896 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2897 | if (stat) | |
2898 | return stat; | |
2899 | ||
2900 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
2901 | return cdrom_mode_select(cdi, &cgc); | |
2902 | } | |
2903 | ||
2904 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
2905 | { | |
2906 | struct packet_command cgc; | |
2907 | char buffer[16]; | |
2908 | int stat; | |
2909 | char spindown; | |
2910 | ||
2911 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2912 | ||
2913 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2914 | if (stat) | |
2915 | return stat; | |
2916 | ||
2917 | spindown = buffer[11] & 0x0f; | |
2918 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) | |
2919 | return -EFAULT; | |
2920 | return 0; | |
2921 | } | |
2922 | ||
1da177e4 LT |
2923 | static int idecd_ioctl (struct inode *inode, struct file *file, |
2924 | unsigned int cmd, unsigned long arg) | |
2925 | { | |
2926 | struct block_device *bdev = inode->i_bdev; | |
2927 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); | |
2928 | int err; | |
2929 | ||
6a2900b6 CH |
2930 | switch (cmd) { |
2931 | case CDROMSETSPINDOWN: | |
2932 | return idecd_set_spindown(&info->devinfo, arg); | |
2933 | case CDROMGETSPINDOWN: | |
2934 | return idecd_get_spindown(&info->devinfo, arg); | |
2935 | default: | |
2936 | break; | |
2937 | } | |
2938 | ||
2939 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); | |
1da177e4 LT |
2940 | if (err == -EINVAL) |
2941 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); | |
2942 | ||
2943 | return err; | |
2944 | } | |
2945 | ||
2946 | static int idecd_media_changed(struct gendisk *disk) | |
2947 | { | |
2948 | struct cdrom_info *info = ide_cd_g(disk); | |
2949 | return cdrom_media_changed(&info->devinfo); | |
2950 | } | |
2951 | ||
2952 | static int idecd_revalidate_disk(struct gendisk *disk) | |
2953 | { | |
2954 | struct cdrom_info *info = ide_cd_g(disk); | |
2955 | struct request_sense sense; | |
2956 | cdrom_read_toc(info->drive, &sense); | |
2957 | return 0; | |
2958 | } | |
2959 | ||
2960 | static struct block_device_operations idecd_ops = { | |
2961 | .owner = THIS_MODULE, | |
2962 | .open = idecd_open, | |
2963 | .release = idecd_release, | |
2964 | .ioctl = idecd_ioctl, | |
2965 | .media_changed = idecd_media_changed, | |
2966 | .revalidate_disk= idecd_revalidate_disk | |
2967 | }; | |
2968 | ||
2969 | /* options */ | |
2970 | static char *ignore = NULL; | |
2971 | ||
2972 | module_param(ignore, charp, 0400); | |
2973 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); | |
2974 | ||
4031bbe4 | 2975 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
2976 | { |
2977 | struct cdrom_info *info; | |
2978 | struct gendisk *g; | |
2979 | struct request_sense sense; | |
2980 | ||
2981 | if (!strstr("ide-cdrom", drive->driver_req)) | |
2982 | goto failed; | |
2983 | if (!drive->present) | |
2984 | goto failed; | |
2985 | if (drive->media != ide_cdrom && drive->media != ide_optical) | |
2986 | goto failed; | |
2987 | /* skip drives that we were told to ignore */ | |
2988 | if (ignore != NULL) { | |
2989 | if (strstr(ignore, drive->name)) { | |
2990 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); | |
2991 | goto failed; | |
2992 | } | |
2993 | } | |
2994 | if (drive->scsi) { | |
2995 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); | |
2996 | goto failed; | |
2997 | } | |
f5e3c2fa | 2998 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 LT |
2999 | if (info == NULL) { |
3000 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); | |
3001 | goto failed; | |
3002 | } | |
3003 | ||
3004 | g = alloc_disk(1 << PARTN_BITS); | |
3005 | if (!g) | |
3006 | goto out_free_cd; | |
3007 | ||
3008 | ide_init_disk(g, drive); | |
3009 | ||
7662d046 | 3010 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
8604affd | 3011 | |
1da177e4 LT |
3012 | kref_init(&info->kref); |
3013 | ||
3014 | info->drive = drive; | |
3015 | info->driver = &ide_cdrom_driver; | |
3016 | info->disk = g; | |
3017 | ||
3018 | g->private_data = &info->driver; | |
3019 | ||
3020 | drive->driver_data = info; | |
3021 | ||
1da177e4 | 3022 | g->minors = 1; |
1da177e4 LT |
3023 | g->driverfs_dev = &drive->gendev; |
3024 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
3025 | if (ide_cdrom_setup(drive)) { | |
7662d046 | 3026 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
05017db3 | 3027 | ide_cd_release(&info->kref); |
1da177e4 LT |
3028 | goto failed; |
3029 | } | |
1da177e4 LT |
3030 | |
3031 | cdrom_read_toc(drive, &sense); | |
3032 | g->fops = &idecd_ops; | |
3033 | g->flags |= GENHD_FL_REMOVABLE; | |
3034 | add_disk(g); | |
3035 | return 0; | |
3036 | ||
1da177e4 LT |
3037 | out_free_cd: |
3038 | kfree(info); | |
3039 | failed: | |
8604affd | 3040 | return -ENODEV; |
1da177e4 LT |
3041 | } |
3042 | ||
3043 | static void __exit ide_cdrom_exit(void) | |
3044 | { | |
8604affd | 3045 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 3046 | } |
17514e8a BZ |
3047 | |
3048 | static int __init ide_cdrom_init(void) | |
1da177e4 | 3049 | { |
8604affd | 3050 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
3051 | } |
3052 | ||
263756ec | 3053 | MODULE_ALIAS("ide:*m-cdrom*"); |
972560fb | 3054 | MODULE_ALIAS("ide-cd"); |
1da177e4 LT |
3055 | module_init(ide_cdrom_init); |
3056 | module_exit(ide_cdrom_exit); | |
3057 | MODULE_LICENSE("GPL"); |