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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> |
1da177e4 LT |
49 | |
50 | #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */ | |
51 | ||
52 | #include <asm/irq.h> | |
53 | #include <asm/io.h> | |
54 | #include <asm/byteorder.h> | |
55 | #include <asm/uaccess.h> | |
56 | #include <asm/unaligned.h> | |
57 | ||
58 | #include "ide-cd.h" | |
59 | ||
cf8b8975 | 60 | static DEFINE_MUTEX(idecd_ref_mutex); |
1da177e4 LT |
61 | |
62 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) | |
63 | ||
64 | #define ide_cd_g(disk) \ | |
65 | container_of((disk)->private_data, struct cdrom_info, driver) | |
66 | ||
67 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) | |
68 | { | |
69 | struct cdrom_info *cd = NULL; | |
70 | ||
cf8b8975 | 71 | mutex_lock(&idecd_ref_mutex); |
1da177e4 LT |
72 | cd = ide_cd_g(disk); |
73 | if (cd) | |
74 | kref_get(&cd->kref); | |
cf8b8975 | 75 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
76 | return cd; |
77 | } | |
78 | ||
79 | static void ide_cd_release(struct kref *); | |
80 | ||
81 | static void ide_cd_put(struct cdrom_info *cd) | |
82 | { | |
cf8b8975 | 83 | mutex_lock(&idecd_ref_mutex); |
1da177e4 | 84 | kref_put(&cd->kref, ide_cd_release); |
cf8b8975 | 85 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
86 | } |
87 | ||
88 | /**************************************************************************** | |
89 | * Generic packet command support and error handling routines. | |
90 | */ | |
91 | ||
92 | /* Mark that we've seen a media change, and invalidate our internal | |
93 | buffers. */ | |
94 | static void cdrom_saw_media_change (ide_drive_t *drive) | |
95 | { | |
96 | struct cdrom_info *info = drive->driver_data; | |
97 | ||
98 | CDROM_STATE_FLAGS (drive)->media_changed = 1; | |
99 | CDROM_STATE_FLAGS (drive)->toc_valid = 0; | |
100 | info->nsectors_buffered = 0; | |
101 | } | |
102 | ||
103 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, | |
104 | struct request_sense *sense) | |
105 | { | |
106 | int log = 0; | |
107 | ||
4aff5e23 | 108 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
109 | return 0; |
110 | ||
111 | switch (sense->sense_key) { | |
112 | case NO_SENSE: case RECOVERED_ERROR: | |
113 | break; | |
114 | case NOT_READY: | |
115 | /* | |
116 | * don't care about tray state messages for | |
117 | * e.g. capacity commands or in-progress or | |
118 | * becoming ready | |
119 | */ | |
120 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
121 | break; | |
122 | log = 1; | |
123 | break; | |
124 | case ILLEGAL_REQUEST: | |
125 | /* | |
126 | * don't log START_STOP unit with LoEj set, since | |
127 | * we cannot reliably check if drive can auto-close | |
128 | */ | |
129 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
dbe217af AC |
130 | break; |
131 | log = 1; | |
1da177e4 LT |
132 | break; |
133 | case UNIT_ATTENTION: | |
134 | /* | |
135 | * Make good and sure we've seen this potential media | |
136 | * change. Some drives (i.e. Creative) fail to present | |
137 | * the correct sense key in the error register. | |
138 | */ | |
139 | cdrom_saw_media_change(drive); | |
140 | break; | |
141 | default: | |
142 | log = 1; | |
143 | break; | |
144 | } | |
145 | return log; | |
146 | } | |
147 | ||
148 | static | |
149 | void cdrom_analyze_sense_data(ide_drive_t *drive, | |
150 | struct request *failed_command, | |
151 | struct request_sense *sense) | |
152 | { | |
dbe217af AC |
153 | unsigned long sector; |
154 | unsigned long bio_sectors; | |
155 | unsigned long valid; | |
156 | struct cdrom_info *info = drive->driver_data; | |
157 | ||
1da177e4 LT |
158 | if (!cdrom_log_sense(drive, failed_command, sense)) |
159 | return; | |
160 | ||
161 | /* | |
162 | * If a read toc is executed for a CD-R or CD-RW medium where | |
163 | * the first toc has not been recorded yet, it will fail with | |
164 | * 05/24/00 (which is a confusing error) | |
165 | */ | |
166 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
167 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
168 | return; | |
169 | ||
dbe217af AC |
170 | if (sense->error_code == 0x70) { /* Current Error */ |
171 | switch(sense->sense_key) { | |
172 | case MEDIUM_ERROR: | |
173 | case VOLUME_OVERFLOW: | |
174 | case ILLEGAL_REQUEST: | |
175 | if (!sense->valid) | |
176 | break; | |
177 | if (failed_command == NULL || | |
178 | !blk_fs_request(failed_command)) | |
179 | break; | |
180 | sector = (sense->information[0] << 24) | | |
181 | (sense->information[1] << 16) | | |
182 | (sense->information[2] << 8) | | |
183 | (sense->information[3]); | |
184 | ||
185 | bio_sectors = bio_sectors(failed_command->bio); | |
186 | if (bio_sectors < 4) | |
187 | bio_sectors = 4; | |
188 | if (drive->queue->hardsect_size == 2048) | |
189 | sector <<= 2; /* Device sector size is 2K */ | |
190 | sector &= ~(bio_sectors -1); | |
191 | valid = (sector - failed_command->sector) << 9; | |
192 | ||
193 | if (valid < 0) | |
194 | valid = 0; | |
195 | if (sector < get_capacity(info->disk) && | |
196 | drive->probed_capacity - sector < 4 * 75) { | |
197 | set_capacity(info->disk, sector); | |
198 | } | |
199 | } | |
200 | } | |
1da177e4 LT |
201 | #if VERBOSE_IDE_CD_ERRORS |
202 | { | |
203 | int i; | |
70d1d47c | 204 | const char *s = "bad sense key!"; |
1da177e4 LT |
205 | char buf[80]; |
206 | ||
207 | printk ("ATAPI device %s:\n", drive->name); | |
208 | if (sense->error_code==0x70) | |
209 | printk(" Error: "); | |
210 | else if (sense->error_code==0x71) | |
211 | printk(" Deferred Error: "); | |
212 | else if (sense->error_code == 0x7f) | |
213 | printk(" Vendor-specific Error: "); | |
214 | else | |
215 | printk(" Unknown Error Type: "); | |
216 | ||
74c8f97a | 217 | if (sense->sense_key < ARRAY_SIZE(sense_key_texts)) |
1da177e4 | 218 | s = sense_key_texts[sense->sense_key]; |
1da177e4 LT |
219 | |
220 | printk("%s -- (Sense key=0x%02x)\n", s, sense->sense_key); | |
221 | ||
222 | if (sense->asc == 0x40) { | |
223 | sprintf(buf, "Diagnostic failure on component 0x%02x", | |
224 | sense->ascq); | |
225 | s = buf; | |
226 | } else { | |
74c8f97a | 227 | int lo = 0, mid, hi = ARRAY_SIZE(sense_data_texts); |
1da177e4 LT |
228 | unsigned long key = (sense->sense_key << 16); |
229 | key |= (sense->asc << 8); | |
230 | if (!(sense->ascq >= 0x80 && sense->ascq <= 0xdd)) | |
231 | key |= sense->ascq; | |
232 | s = NULL; | |
233 | ||
234 | while (hi > lo) { | |
235 | mid = (lo + hi) / 2; | |
236 | if (sense_data_texts[mid].asc_ascq == key || | |
237 | sense_data_texts[mid].asc_ascq == (0xff0000|key)) { | |
238 | s = sense_data_texts[mid].text; | |
239 | break; | |
240 | } | |
241 | else if (sense_data_texts[mid].asc_ascq > key) | |
242 | hi = mid; | |
243 | else | |
244 | lo = mid+1; | |
245 | } | |
246 | } | |
247 | ||
248 | if (s == NULL) { | |
249 | if (sense->asc > 0x80) | |
250 | s = "(vendor-specific error)"; | |
251 | else | |
252 | s = "(reserved error code)"; | |
253 | } | |
254 | ||
255 | printk(KERN_ERR " %s -- (asc=0x%02x, ascq=0x%02x)\n", | |
256 | s, sense->asc, sense->ascq); | |
257 | ||
258 | if (failed_command != NULL) { | |
259 | ||
74c8f97a | 260 | int lo=0, mid, hi= ARRAY_SIZE(packet_command_texts); |
1da177e4 LT |
261 | s = NULL; |
262 | ||
263 | while (hi > lo) { | |
264 | mid = (lo + hi) / 2; | |
265 | if (packet_command_texts[mid].packet_command == | |
266 | failed_command->cmd[0]) { | |
267 | s = packet_command_texts[mid].text; | |
268 | break; | |
269 | } | |
270 | if (packet_command_texts[mid].packet_command > | |
271 | failed_command->cmd[0]) | |
272 | hi = mid; | |
273 | else | |
274 | lo = mid+1; | |
275 | } | |
276 | ||
277 | printk (KERN_ERR " The failed \"%s\" packet command was: \n \"", s); | |
278 | for (i=0; i<sizeof (failed_command->cmd); i++) | |
279 | printk ("%02x ", failed_command->cmd[i]); | |
280 | printk ("\"\n"); | |
281 | } | |
282 | ||
283 | /* The SKSV bit specifies validity of the sense_key_specific | |
284 | * in the next two commands. It is bit 7 of the first byte. | |
285 | * In the case of NOT_READY, if SKSV is set the drive can | |
286 | * give us nice ETA readings. | |
287 | */ | |
288 | if (sense->sense_key == NOT_READY && (sense->sks[0] & 0x80)) { | |
289 | int progress = (sense->sks[1] << 8 | sense->sks[2]) * 100; | |
290 | printk(KERN_ERR " Command is %02d%% complete\n", progress / 0xffff); | |
291 | ||
292 | } | |
293 | ||
294 | if (sense->sense_key == ILLEGAL_REQUEST && | |
295 | (sense->sks[0] & 0x80) != 0) { | |
296 | printk(KERN_ERR " Error in %s byte %d", | |
297 | (sense->sks[0] & 0x40) != 0 ? | |
298 | "command packet" : "command data", | |
299 | (sense->sks[1] << 8) + sense->sks[2]); | |
300 | ||
301 | if ((sense->sks[0] & 0x40) != 0) | |
302 | printk (" bit %d", sense->sks[0] & 0x07); | |
303 | ||
304 | printk ("\n"); | |
305 | } | |
306 | } | |
307 | ||
308 | #else /* not VERBOSE_IDE_CD_ERRORS */ | |
309 | ||
310 | /* Suppress printing unit attention and `in progress of becoming ready' | |
311 | errors when we're not being verbose. */ | |
312 | ||
313 | if (sense->sense_key == UNIT_ATTENTION || | |
314 | (sense->sense_key == NOT_READY && (sense->asc == 4 || | |
315 | sense->asc == 0x3a))) | |
316 | return; | |
317 | ||
318 | printk(KERN_ERR "%s: error code: 0x%02x sense_key: 0x%02x asc: 0x%02x ascq: 0x%02x\n", | |
319 | drive->name, | |
320 | sense->error_code, sense->sense_key, | |
321 | sense->asc, sense->ascq); | |
322 | #endif /* not VERBOSE_IDE_CD_ERRORS */ | |
323 | } | |
324 | ||
325 | /* | |
326 | * Initialize a ide-cd packet command request | |
327 | */ | |
328 | static void cdrom_prepare_request(ide_drive_t *drive, struct request *rq) | |
329 | { | |
330 | struct cdrom_info *cd = drive->driver_data; | |
331 | ||
332 | ide_init_drive_cmd(rq); | |
cea2885a | 333 | rq->cmd_type = REQ_TYPE_ATA_PC; |
1da177e4 LT |
334 | rq->rq_disk = cd->disk; |
335 | } | |
336 | ||
337 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, | |
338 | struct request *failed_command) | |
339 | { | |
340 | struct cdrom_info *info = drive->driver_data; | |
341 | struct request *rq = &info->request_sense_request; | |
342 | ||
343 | if (sense == NULL) | |
344 | sense = &info->sense_data; | |
345 | ||
346 | /* stuff the sense request in front of our current request */ | |
347 | cdrom_prepare_request(drive, rq); | |
348 | ||
349 | rq->data = sense; | |
350 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
351 | rq->cmd[4] = rq->data_len = 18; | |
352 | ||
4aff5e23 | 353 | rq->cmd_type = REQ_TYPE_SENSE; |
1da177e4 LT |
354 | |
355 | /* NOTE! Save the failed command in "rq->buffer" */ | |
356 | rq->buffer = (void *) failed_command; | |
357 | ||
358 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); | |
359 | } | |
360 | ||
361 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) | |
362 | { | |
363 | struct request *rq = HWGROUP(drive)->rq; | |
364 | int nsectors = rq->hard_cur_sectors; | |
365 | ||
4aff5e23 | 366 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 367 | /* |
4aff5e23 JA |
368 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
369 | * failed request | |
1da177e4 LT |
370 | */ |
371 | struct request *failed = (struct request *) rq->buffer; | |
372 | struct cdrom_info *info = drive->driver_data; | |
373 | void *sense = &info->sense_data; | |
374 | unsigned long flags; | |
375 | ||
376 | if (failed) { | |
377 | if (failed->sense) { | |
378 | sense = failed->sense; | |
379 | failed->sense_len = rq->sense_len; | |
380 | } | |
dbe217af | 381 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 LT |
382 | /* |
383 | * now end failed request | |
384 | */ | |
dbe217af AC |
385 | if (blk_fs_request(failed)) { |
386 | if (ide_end_dequeued_request(drive, failed, 0, | |
387 | failed->hard_nr_sectors)) | |
388 | BUG(); | |
389 | } else { | |
390 | spin_lock_irqsave(&ide_lock, flags); | |
5e36bb6e KU |
391 | if (__blk_end_request(failed, -EIO, |
392 | failed->data_len)) | |
393 | BUG(); | |
dbe217af AC |
394 | spin_unlock_irqrestore(&ide_lock, flags); |
395 | } | |
396 | } else | |
397 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
398 | } |
399 | ||
400 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
401 | uptodate = 1; | |
402 | /* make sure it's fully ended */ | |
403 | if (blk_pc_request(rq)) | |
404 | nsectors = (rq->data_len + 511) >> 9; | |
405 | if (!nsectors) | |
406 | nsectors = 1; | |
407 | ||
408 | ide_end_request(drive, uptodate, nsectors); | |
409 | } | |
410 | ||
dbe217af AC |
411 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
412 | { | |
413 | if (stat & 0x80) | |
414 | return; | |
415 | ide_dump_status(drive, msg, stat); | |
416 | } | |
417 | ||
1da177e4 LT |
418 | /* Returns 0 if the request should be continued. |
419 | Returns 1 if the request was ended. */ | |
420 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) | |
421 | { | |
422 | struct request *rq = HWGROUP(drive)->rq; | |
423 | int stat, err, sense_key; | |
424 | ||
425 | /* Check for errors. */ | |
426 | stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
427 | if (stat_ret) | |
428 | *stat_ret = stat; | |
429 | ||
430 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
431 | return 0; | |
432 | ||
433 | /* Get the IDE error register. */ | |
434 | err = HWIF(drive)->INB(IDE_ERROR_REG); | |
435 | sense_key = err >> 4; | |
436 | ||
437 | if (rq == NULL) { | |
438 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); | |
439 | return 1; | |
440 | } | |
441 | ||
4aff5e23 | 442 | if (blk_sense_request(rq)) { |
1da177e4 LT |
443 | /* We got an error trying to get sense info |
444 | from the drive (probably while trying | |
445 | to recover from a former error). Just give up. */ | |
446 | ||
4aff5e23 | 447 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
448 | cdrom_end_request(drive, 0); |
449 | ide_error(drive, "request sense failure", stat); | |
450 | return 1; | |
451 | ||
8770c018 | 452 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 LT |
453 | /* All other functions, except for READ. */ |
454 | unsigned long flags; | |
455 | ||
456 | /* | |
457 | * if we have an error, pass back CHECK_CONDITION as the | |
458 | * scsi status byte | |
459 | */ | |
b7156731 | 460 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
461 | rq->errors = SAM_STAT_CHECK_CONDITION; |
462 | ||
463 | /* Check for tray open. */ | |
464 | if (sense_key == NOT_READY) { | |
465 | cdrom_saw_media_change (drive); | |
466 | } else if (sense_key == UNIT_ATTENTION) { | |
467 | /* Check for media change. */ | |
468 | cdrom_saw_media_change (drive); | |
469 | /*printk("%s: media changed\n",drive->name);*/ | |
470 | return 0; | |
76ca1af1 SH |
471 | } else if ((sense_key == ILLEGAL_REQUEST) && |
472 | (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { | |
473 | /* | |
474 | * Don't print error message for this condition-- | |
475 | * SFF8090i indicates that 5/24/00 is the correct | |
476 | * response to a request to close the tray if the | |
477 | * drive doesn't have that capability. | |
478 | * cdrom_log_sense() knows this! | |
479 | */ | |
4aff5e23 | 480 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
1da177e4 LT |
481 | /* Otherwise, print an error. */ |
482 | ide_dump_status(drive, "packet command error", stat); | |
483 | } | |
484 | ||
4aff5e23 | 485 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
486 | |
487 | /* | |
488 | * instead of playing games with moving completions around, | |
489 | * remove failed request completely and end it when the | |
490 | * request sense has completed | |
491 | */ | |
492 | if (stat & ERR_STAT) { | |
493 | spin_lock_irqsave(&ide_lock, flags); | |
494 | blkdev_dequeue_request(rq); | |
495 | HWGROUP(drive)->rq = NULL; | |
496 | spin_unlock_irqrestore(&ide_lock, flags); | |
497 | ||
498 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
499 | } else | |
500 | cdrom_end_request(drive, 0); | |
501 | ||
502 | } else if (blk_fs_request(rq)) { | |
503 | int do_end_request = 0; | |
504 | ||
505 | /* Handle errors from READ and WRITE requests. */ | |
506 | ||
507 | if (blk_noretry_request(rq)) | |
508 | do_end_request = 1; | |
509 | ||
510 | if (sense_key == NOT_READY) { | |
511 | /* Tray open. */ | |
512 | if (rq_data_dir(rq) == READ) { | |
513 | cdrom_saw_media_change (drive); | |
514 | ||
515 | /* Fail the request. */ | |
516 | printk ("%s: tray open\n", drive->name); | |
517 | do_end_request = 1; | |
518 | } else { | |
519 | struct cdrom_info *info = drive->driver_data; | |
520 | ||
521 | /* allow the drive 5 seconds to recover, some | |
522 | * devices will return this error while flushing | |
523 | * data from cache */ | |
524 | if (!rq->errors) | |
525 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; | |
526 | rq->errors = 1; | |
527 | if (time_after(jiffies, info->write_timeout)) | |
528 | do_end_request = 1; | |
529 | else { | |
530 | unsigned long flags; | |
531 | ||
532 | /* | |
533 | * take a breather relying on the | |
534 | * unplug timer to kick us again | |
535 | */ | |
536 | spin_lock_irqsave(&ide_lock, flags); | |
537 | blk_plug_device(drive->queue); | |
538 | spin_unlock_irqrestore(&ide_lock,flags); | |
539 | return 1; | |
540 | } | |
541 | } | |
542 | } else if (sense_key == UNIT_ATTENTION) { | |
543 | /* Media change. */ | |
544 | cdrom_saw_media_change (drive); | |
545 | ||
546 | /* Arrange to retry the request. | |
547 | But be sure to give up if we've retried | |
548 | too many times. */ | |
549 | if (++rq->errors > ERROR_MAX) | |
550 | do_end_request = 1; | |
551 | } else if (sense_key == ILLEGAL_REQUEST || | |
552 | sense_key == DATA_PROTECT) { | |
553 | /* No point in retrying after an illegal | |
554 | request or data protect error.*/ | |
dbe217af | 555 | ide_dump_status_no_sense (drive, "command error", stat); |
1da177e4 LT |
556 | do_end_request = 1; |
557 | } else if (sense_key == MEDIUM_ERROR) { | |
558 | /* No point in re-trying a zillion times on a bad | |
559 | * sector... If we got here the error is not correctable */ | |
dbe217af | 560 | ide_dump_status_no_sense (drive, "media error (bad sector)", stat); |
1da177e4 LT |
561 | do_end_request = 1; |
562 | } else if (sense_key == BLANK_CHECK) { | |
563 | /* Disk appears blank ?? */ | |
dbe217af | 564 | ide_dump_status_no_sense (drive, "media error (blank)", stat); |
1da177e4 LT |
565 | do_end_request = 1; |
566 | } else if ((err & ~ABRT_ERR) != 0) { | |
567 | /* Go to the default handler | |
568 | for other errors. */ | |
569 | ide_error(drive, "cdrom_decode_status", stat); | |
570 | return 1; | |
571 | } else if ((++rq->errors > ERROR_MAX)) { | |
572 | /* We've racked up too many retries. Abort. */ | |
573 | do_end_request = 1; | |
574 | } | |
575 | ||
dbe217af AC |
576 | /* End a request through request sense analysis when we have |
577 | sense data. We need this in order to perform end of media | |
578 | processing */ | |
579 | ||
580 | if (do_end_request) { | |
581 | if (stat & ERR_STAT) { | |
582 | unsigned long flags; | |
583 | spin_lock_irqsave(&ide_lock, flags); | |
584 | blkdev_dequeue_request(rq); | |
585 | HWGROUP(drive)->rq = NULL; | |
586 | spin_unlock_irqrestore(&ide_lock, flags); | |
587 | ||
588 | cdrom_queue_request_sense(drive, rq->sense, rq); | |
589 | } else | |
590 | cdrom_end_request(drive, 0); | |
591 | } else { | |
592 | /* If we got a CHECK_CONDITION status, | |
593 | queue a request sense command. */ | |
594 | if (stat & ERR_STAT) | |
595 | cdrom_queue_request_sense(drive, NULL, NULL); | |
596 | } | |
1da177e4 LT |
597 | } else { |
598 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); | |
599 | cdrom_end_request(drive, 0); | |
600 | } | |
601 | ||
602 | /* Retry, or handle the next request. */ | |
603 | return 1; | |
604 | } | |
605 | ||
606 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
607 | { | |
608 | struct request *rq = HWGROUP(drive)->rq; | |
609 | unsigned long wait = 0; | |
610 | ||
611 | /* | |
612 | * Some commands are *slow* and normally take a long time to | |
613 | * complete. Usually we can use the ATAPI "disconnect" to bypass | |
614 | * this, but not all commands/drives support that. Let | |
615 | * ide_timer_expiry keep polling us for these. | |
616 | */ | |
617 | switch (rq->cmd[0]) { | |
618 | case GPCMD_BLANK: | |
619 | case GPCMD_FORMAT_UNIT: | |
620 | case GPCMD_RESERVE_RZONE_TRACK: | |
621 | case GPCMD_CLOSE_TRACK: | |
622 | case GPCMD_FLUSH_CACHE: | |
623 | wait = ATAPI_WAIT_PC; | |
624 | break; | |
625 | default: | |
4aff5e23 | 626 | if (!(rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
627 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
628 | wait = 0; | |
629 | break; | |
630 | } | |
631 | return wait; | |
632 | } | |
633 | ||
634 | /* Set up the device registers for transferring a packet command on DEV, | |
635 | expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
636 | which actually transfers the command to the drive. If this is a | |
637 | drq_interrupt device, this routine will arrange for HANDLER to be | |
638 | called when the interrupt from the drive arrives. Otherwise, HANDLER | |
639 | will be called immediately after the drive is prepared for the transfer. */ | |
640 | ||
641 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, | |
642 | int xferlen, | |
643 | ide_handler_t *handler) | |
644 | { | |
645 | ide_startstop_t startstop; | |
646 | struct cdrom_info *info = drive->driver_data; | |
647 | ide_hwif_t *hwif = drive->hwif; | |
648 | ||
649 | /* Wait for the controller to be idle. */ | |
650 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) | |
651 | return startstop; | |
652 | ||
3a6a3549 | 653 | /* FIXME: for Virtual DMA we must check harder */ |
1da177e4 LT |
654 | if (info->dma) |
655 | info->dma = !hwif->dma_setup(drive); | |
656 | ||
657 | /* Set up the controller registers. */ | |
2fc57388 BZ |
658 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
659 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); | |
1da177e4 LT |
660 | |
661 | if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) { | |
f0dd8712 AL |
662 | /* waiting for CDB interrupt, not DMA yet. */ |
663 | if (info->dma) | |
664 | drive->waiting_for_dma = 0; | |
665 | ||
1da177e4 LT |
666 | /* packet command */ |
667 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
668 | return ide_started; | |
669 | } else { | |
670 | unsigned long flags; | |
671 | ||
672 | /* packet command */ | |
673 | spin_lock_irqsave(&ide_lock, flags); | |
674 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); | |
675 | ndelay(400); | |
676 | spin_unlock_irqrestore(&ide_lock, flags); | |
677 | ||
678 | return (*handler) (drive); | |
679 | } | |
680 | } | |
681 | ||
682 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. | |
683 | The device registers must have already been prepared | |
684 | by cdrom_start_packet_command. | |
685 | HANDLER is the interrupt handler to call when the command completes | |
686 | or there's data ready. */ | |
1da177e4 LT |
687 | #define ATAPI_MIN_CDB_BYTES 12 |
688 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, | |
689 | struct request *rq, | |
690 | ide_handler_t *handler) | |
691 | { | |
692 | ide_hwif_t *hwif = drive->hwif; | |
693 | int cmd_len; | |
694 | struct cdrom_info *info = drive->driver_data; | |
695 | ide_startstop_t startstop; | |
696 | ||
697 | if (CDROM_CONFIG_FLAGS(drive)->drq_interrupt) { | |
698 | /* Here we should have been called after receiving an interrupt | |
699 | from the device. DRQ should how be set. */ | |
700 | ||
701 | /* Check for errors. */ | |
702 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) | |
703 | return ide_stopped; | |
f0dd8712 AL |
704 | |
705 | /* Ok, next interrupt will be DMA interrupt. */ | |
706 | if (info->dma) | |
707 | drive->waiting_for_dma = 1; | |
1da177e4 LT |
708 | } else { |
709 | /* Otherwise, we must wait for DRQ to get set. */ | |
710 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, | |
711 | BUSY_STAT, WAIT_READY)) | |
712 | return startstop; | |
713 | } | |
714 | ||
715 | /* Arm the interrupt handler. */ | |
716 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); | |
717 | ||
718 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
719 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
720 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
721 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
722 | ||
723 | /* Send the command to the device. */ | |
724 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); | |
725 | ||
726 | /* Start the DMA if need be */ | |
727 | if (info->dma) | |
728 | hwif->dma_start(drive); | |
729 | ||
730 | return ide_started; | |
731 | } | |
732 | ||
733 | /**************************************************************************** | |
734 | * Block read functions. | |
735 | */ | |
736 | ||
68661c53 BZ |
737 | typedef void (xfer_func_t)(ide_drive_t *, void *, u32); |
738 | ||
5a5222d9 BZ |
739 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
740 | { | |
741 | while (len > 0) { | |
742 | int dum = 0; | |
743 | xf(drive, &dum, sizeof(dum)); | |
744 | len -= sizeof(dum); | |
745 | } | |
746 | } | |
747 | ||
1da177e4 LT |
748 | /* |
749 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector | |
750 | * buffer. Once the first sector is added, any subsequent sectors are | |
751 | * assumed to be continuous (until the buffer is cleared). For the first | |
752 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until | |
753 | * the buffer is cleared.) | |
754 | */ | |
755 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, | |
756 | int sectors_to_transfer) | |
757 | { | |
758 | struct cdrom_info *info = drive->driver_data; | |
759 | ||
760 | /* Number of sectors to read into the buffer. */ | |
761 | int sectors_to_buffer = min_t(int, sectors_to_transfer, | |
762 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - | |
763 | info->nsectors_buffered); | |
764 | ||
765 | char *dest; | |
766 | ||
767 | /* If we couldn't get a buffer, don't try to buffer anything... */ | |
768 | if (info->buffer == NULL) | |
769 | sectors_to_buffer = 0; | |
770 | ||
771 | /* If this is the first sector in the buffer, remember its number. */ | |
772 | if (info->nsectors_buffered == 0) | |
773 | info->sector_buffered = sector; | |
774 | ||
775 | /* Read the data into the buffer. */ | |
776 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; | |
777 | while (sectors_to_buffer > 0) { | |
778 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); | |
779 | --sectors_to_buffer; | |
780 | --sectors_to_transfer; | |
781 | ++info->nsectors_buffered; | |
782 | dest += SECTOR_SIZE; | |
783 | } | |
784 | ||
785 | /* Throw away any remaining data. */ | |
786 | while (sectors_to_transfer > 0) { | |
787 | static char dum[SECTOR_SIZE]; | |
788 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); | |
789 | --sectors_to_transfer; | |
790 | } | |
791 | } | |
792 | ||
793 | /* | |
794 | * Check the contents of the interrupt reason register from the cdrom | |
795 | * and attempt to recover if there are problems. Returns 0 if everything's | |
796 | * ok; nonzero if the request has been terminated. | |
797 | */ | |
858119e1 | 798 | static |
1da177e4 LT |
799 | int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason) |
800 | { | |
801 | if (ireason == 2) | |
802 | return 0; | |
803 | else if (ireason == 0) { | |
5a5222d9 BZ |
804 | ide_hwif_t *hwif = drive->hwif; |
805 | ||
1da177e4 | 806 | /* Whoops... The drive is expecting to receive data from us! */ |
35379c07 BZ |
807 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
808 | drive->name, __FUNCTION__); | |
1da177e4 LT |
809 | |
810 | /* Throw some data at the drive so it doesn't hang | |
811 | and quit this request. */ | |
5a5222d9 | 812 | ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len); |
1da177e4 LT |
813 | } else if (ireason == 1) { |
814 | /* Some drives (ASUS) seem to tell us that status | |
815 | * info is available. just get it and ignore. | |
816 | */ | |
817 | (void) HWIF(drive)->INB(IDE_STATUS_REG); | |
818 | return 0; | |
819 | } else { | |
820 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
821 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
822 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
823 | } |
824 | ||
825 | cdrom_end_request(drive, 0); | |
826 | return -1; | |
827 | } | |
828 | ||
829 | /* | |
830 | * Interrupt routine. Called when a read request has completed. | |
831 | */ | |
832 | static ide_startstop_t cdrom_read_intr (ide_drive_t *drive) | |
833 | { | |
834 | int stat; | |
835 | int ireason, len, sectors_to_transfer, nskip; | |
836 | struct cdrom_info *info = drive->driver_data; | |
837 | u8 lowcyl = 0, highcyl = 0; | |
838 | int dma = info->dma, dma_error = 0; | |
839 | ||
840 | struct request *rq = HWGROUP(drive)->rq; | |
841 | ||
842 | /* | |
843 | * handle dma case | |
844 | */ | |
845 | if (dma) { | |
846 | info->dma = 0; | |
52ef2ed0 BZ |
847 | dma_error = HWIF(drive)->ide_dma_end(drive); |
848 | if (dma_error) { | |
849 | printk(KERN_ERR "%s: DMA read error\n", drive->name); | |
7469aaf6 | 850 | ide_dma_off(drive); |
52ef2ed0 | 851 | } |
1da177e4 LT |
852 | } |
853 | ||
854 | if (cdrom_decode_status(drive, 0, &stat)) | |
855 | return ide_stopped; | |
856 | ||
857 | if (dma) { | |
858 | if (!dma_error) { | |
859 | ide_end_request(drive, 1, rq->nr_sectors); | |
860 | return ide_stopped; | |
861 | } else | |
862 | return ide_error(drive, "dma error", stat); | |
863 | } | |
864 | ||
865 | /* Read the interrupt reason and the transfer length. */ | |
866 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; | |
867 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
868 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
869 | ||
870 | len = lowcyl + (256 * highcyl); | |
871 | ||
872 | /* If DRQ is clear, the command has completed. */ | |
873 | if ((stat & DRQ_STAT) == 0) { | |
874 | /* If we're not done filling the current buffer, complain. | |
875 | Otherwise, complete the command normally. */ | |
876 | if (rq->current_nr_sectors > 0) { | |
877 | printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n", | |
878 | drive->name, rq->current_nr_sectors); | |
4aff5e23 | 879 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
880 | cdrom_end_request(drive, 0); |
881 | } else | |
882 | cdrom_end_request(drive, 1); | |
883 | return ide_stopped; | |
884 | } | |
885 | ||
886 | /* Check that the drive is expecting to do the same thing we are. */ | |
887 | if (cdrom_read_check_ireason (drive, len, ireason)) | |
888 | return ide_stopped; | |
889 | ||
890 | /* Assume that the drive will always provide data in multiples | |
891 | of at least SECTOR_SIZE, as it gets hairy to keep track | |
892 | of the transfers otherwise. */ | |
893 | if ((len % SECTOR_SIZE) != 0) { | |
894 | printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n", | |
895 | drive->name, len); | |
896 | if (CDROM_CONFIG_FLAGS(drive)->limit_nframes) | |
897 | printk (KERN_ERR " This drive is not supported by this version of the driver\n"); | |
898 | else { | |
899 | printk (KERN_ERR " Trying to limit transfer sizes\n"); | |
900 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; | |
901 | } | |
902 | cdrom_end_request(drive, 0); | |
903 | return ide_stopped; | |
904 | } | |
905 | ||
906 | /* The number of sectors we need to read from the drive. */ | |
907 | sectors_to_transfer = len / SECTOR_SIZE; | |
908 | ||
909 | /* First, figure out if we need to bit-bucket | |
910 | any of the leading sectors. */ | |
911 | nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer); | |
912 | ||
913 | while (nskip > 0) { | |
914 | /* We need to throw away a sector. */ | |
915 | static char dum[SECTOR_SIZE]; | |
916 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); | |
917 | ||
918 | --rq->current_nr_sectors; | |
919 | --nskip; | |
920 | --sectors_to_transfer; | |
921 | } | |
922 | ||
923 | /* Now loop while we still have data to read from the drive. */ | |
924 | while (sectors_to_transfer > 0) { | |
925 | int this_transfer; | |
926 | ||
927 | /* If we've filled the present buffer but there's another | |
928 | chained buffer after it, move on. */ | |
929 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
930 | cdrom_end_request(drive, 1); | |
931 | ||
932 | /* If the buffers are full, cache the rest of the data in our | |
933 | internal buffer. */ | |
934 | if (rq->current_nr_sectors == 0) { | |
935 | cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer); | |
936 | sectors_to_transfer = 0; | |
937 | } else { | |
938 | /* Transfer data to the buffers. | |
939 | Figure out how many sectors we can transfer | |
940 | to the current buffer. */ | |
941 | this_transfer = min_t(int, sectors_to_transfer, | |
942 | rq->current_nr_sectors); | |
943 | ||
944 | /* Read this_transfer sectors | |
945 | into the current buffer. */ | |
946 | while (this_transfer > 0) { | |
947 | HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE); | |
948 | rq->buffer += SECTOR_SIZE; | |
949 | --rq->nr_sectors; | |
950 | --rq->current_nr_sectors; | |
951 | ++rq->sector; | |
952 | --this_transfer; | |
953 | --sectors_to_transfer; | |
954 | } | |
955 | } | |
956 | } | |
957 | ||
958 | /* Done moving data! Wait for another interrupt. */ | |
959 | ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL); | |
960 | return ide_started; | |
961 | } | |
962 | ||
963 | /* | |
964 | * Try to satisfy some of the current read request from our cached data. | |
965 | * Returns nonzero if the request has been completed, zero otherwise. | |
966 | */ | |
967 | static int cdrom_read_from_buffer (ide_drive_t *drive) | |
968 | { | |
969 | struct cdrom_info *info = drive->driver_data; | |
970 | struct request *rq = HWGROUP(drive)->rq; | |
971 | unsigned short sectors_per_frame; | |
972 | ||
973 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
974 | ||
975 | /* Can't do anything if there's no buffer. */ | |
976 | if (info->buffer == NULL) return 0; | |
977 | ||
978 | /* Loop while this request needs data and the next block is present | |
979 | in our cache. */ | |
980 | while (rq->nr_sectors > 0 && | |
981 | rq->sector >= info->sector_buffered && | |
982 | rq->sector < info->sector_buffered + info->nsectors_buffered) { | |
983 | if (rq->current_nr_sectors == 0) | |
984 | cdrom_end_request(drive, 1); | |
985 | ||
986 | memcpy (rq->buffer, | |
987 | info->buffer + | |
988 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, | |
989 | SECTOR_SIZE); | |
990 | rq->buffer += SECTOR_SIZE; | |
991 | --rq->current_nr_sectors; | |
992 | --rq->nr_sectors; | |
993 | ++rq->sector; | |
994 | } | |
995 | ||
996 | /* If we've satisfied the current request, | |
997 | terminate it successfully. */ | |
998 | if (rq->nr_sectors == 0) { | |
999 | cdrom_end_request(drive, 1); | |
1000 | return -1; | |
1001 | } | |
1002 | ||
1003 | /* Move on to the next buffer if needed. */ | |
1004 | if (rq->current_nr_sectors == 0) | |
1005 | cdrom_end_request(drive, 1); | |
1006 | ||
1007 | /* If this condition does not hold, then the kluge i use to | |
1008 | represent the number of sectors to skip at the start of a transfer | |
1009 | will fail. I think that this will never happen, but let's be | |
1010 | paranoid and check. */ | |
1011 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && | |
1012 | (rq->sector & (sectors_per_frame - 1))) { | |
1013 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", | |
1014 | drive->name, (long)rq->sector); | |
1015 | cdrom_end_request(drive, 0); | |
1016 | return -1; | |
1017 | } | |
1018 | ||
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | /* | |
1023 | * Routine to send a read packet command to the drive. | |
1024 | * This is usually called directly from cdrom_start_read. | |
1025 | * However, for drq_interrupt devices, it is called from an interrupt | |
1026 | * when the drive is ready to accept the command. | |
1027 | */ | |
1028 | static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive) | |
1029 | { | |
1030 | struct request *rq = HWGROUP(drive)->rq; | |
1031 | unsigned short sectors_per_frame; | |
1032 | int nskip; | |
1033 | ||
1034 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1035 | ||
1036 | /* If the requested sector doesn't start on a cdrom block boundary, | |
1037 | we must adjust the start of the transfer so that it does, | |
1038 | and remember to skip the first few sectors. | |
1039 | If the CURRENT_NR_SECTORS field is larger than the size | |
1040 | of the buffer, it will mean that we're to skip a number | |
1041 | of sectors equal to the amount by which CURRENT_NR_SECTORS | |
1042 | is larger than the buffer size. */ | |
1043 | nskip = rq->sector & (sectors_per_frame - 1); | |
1044 | if (nskip > 0) { | |
1045 | /* Sanity check... */ | |
1046 | if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) && | |
1047 | (rq->sector & (sectors_per_frame - 1))) { | |
1048 | printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n", | |
1049 | drive->name, rq->current_nr_sectors); | |
1050 | cdrom_end_request(drive, 0); | |
1051 | return ide_stopped; | |
1052 | } | |
1053 | rq->current_nr_sectors += nskip; | |
1054 | } | |
1055 | ||
1056 | /* Set up the command */ | |
1057 | rq->timeout = ATAPI_WAIT_PC; | |
1058 | ||
1059 | /* Send the command to the drive and return. */ | |
1060 | return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr); | |
1061 | } | |
1062 | ||
1063 | ||
1064 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ | |
1065 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ | |
1066 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ | |
1067 | ||
1068 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) | |
1069 | { | |
1070 | struct cdrom_info *info = drive->driver_data; | |
1071 | int stat; | |
1072 | static int retry = 10; | |
1073 | ||
1074 | if (cdrom_decode_status(drive, 0, &stat)) | |
1075 | return ide_stopped; | |
1076 | CDROM_CONFIG_FLAGS(drive)->seeking = 1; | |
1077 | ||
1078 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { | |
1079 | if (--retry == 0) { | |
1080 | /* | |
1081 | * this condition is far too common, to bother | |
1082 | * users about it | |
1083 | */ | |
1084 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ | |
1085 | drive->dsc_overlap = 0; | |
1086 | } | |
1087 | } | |
1088 | return ide_stopped; | |
1089 | } | |
1090 | ||
1091 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) | |
1092 | { | |
1093 | struct request *rq = HWGROUP(drive)->rq; | |
1094 | sector_t frame = rq->sector; | |
1095 | ||
1096 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); | |
1097 | ||
1098 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
1099 | rq->cmd[0] = GPCMD_SEEK; | |
1100 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); | |
1101 | ||
1102 | rq->timeout = ATAPI_WAIT_PC; | |
1103 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); | |
1104 | } | |
1105 | ||
1106 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) | |
1107 | { | |
1108 | struct cdrom_info *info = drive->driver_data; | |
1109 | ||
1110 | info->dma = 0; | |
1da177e4 LT |
1111 | info->start_seek = jiffies; |
1112 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); | |
1113 | } | |
1114 | ||
1115 | /* Fix up a possibly partially-processed request so that we can | |
1116 | start it over entirely, or even put it back on the request queue. */ | |
1117 | static void restore_request (struct request *rq) | |
1118 | { | |
1119 | if (rq->buffer != bio_data(rq->bio)) { | |
1120 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; | |
1121 | ||
1122 | rq->buffer = bio_data(rq->bio); | |
1123 | rq->nr_sectors += n; | |
1124 | rq->sector -= n; | |
1125 | } | |
1126 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); | |
1127 | rq->hard_nr_sectors = rq->nr_sectors; | |
1128 | rq->hard_sector = rq->sector; | |
1129 | rq->q->prep_rq_fn(rq->q, rq); | |
1130 | } | |
1131 | ||
1132 | /* | |
1133 | * Start a read request from the CD-ROM. | |
1134 | */ | |
1135 | static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) | |
1136 | { | |
1137 | struct cdrom_info *info = drive->driver_data; | |
1138 | struct request *rq = HWGROUP(drive)->rq; | |
1139 | unsigned short sectors_per_frame; | |
1140 | ||
1141 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1142 | ||
1143 | /* We may be retrying this request after an error. Fix up | |
1144 | any weirdness which might be present in the request packet. */ | |
1145 | restore_request(rq); | |
1146 | ||
1147 | /* Satisfy whatever we can of this request from our cached sector. */ | |
1148 | if (cdrom_read_from_buffer(drive)) | |
1149 | return ide_stopped; | |
1150 | ||
1da177e4 LT |
1151 | /* Clear the local sector buffer. */ |
1152 | info->nsectors_buffered = 0; | |
1153 | ||
1154 | /* use dma, if possible. */ | |
1155 | info->dma = drive->using_dma; | |
1156 | if ((rq->sector & (sectors_per_frame - 1)) || | |
1157 | (rq->nr_sectors & (sectors_per_frame - 1))) | |
1158 | info->dma = 0; | |
1159 | ||
1da177e4 LT |
1160 | /* Start sending the read request to the drive. */ |
1161 | return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation); | |
1162 | } | |
1163 | ||
1164 | /**************************************************************************** | |
1165 | * Execute all other packet commands. | |
1166 | */ | |
1167 | ||
1168 | /* Interrupt routine for packet command completion. */ | |
1169 | static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive) | |
1170 | { | |
1da177e4 | 1171 | struct request *rq = HWGROUP(drive)->rq; |
68661c53 BZ |
1172 | xfer_func_t *xferfunc = NULL; |
1173 | int stat, ireason, len, thislen, write; | |
1da177e4 | 1174 | u8 lowcyl = 0, highcyl = 0; |
1da177e4 LT |
1175 | |
1176 | /* Check for errors. */ | |
1177 | if (cdrom_decode_status(drive, 0, &stat)) | |
1178 | return ide_stopped; | |
1179 | ||
1180 | /* Read the interrupt reason and the transfer length. */ | |
8606ab09 | 1181 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
1da177e4 LT |
1182 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
1183 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1184 | ||
1185 | len = lowcyl + (256 * highcyl); | |
1186 | ||
1187 | /* If DRQ is clear, the command has completed. | |
1188 | Complain if we still have data left to transfer. */ | |
1189 | if ((stat & DRQ_STAT) == 0) { | |
1190 | /* Some of the trailing request sense fields are optional, and | |
1191 | some drives don't send them. Sigh. */ | |
1192 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
1193 | rq->data_len > 0 && | |
1194 | rq->data_len <= 5) { | |
1195 | while (rq->data_len > 0) { | |
1196 | *(unsigned char *)rq->data++ = 0; | |
1197 | --rq->data_len; | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | if (rq->data_len == 0) | |
1202 | cdrom_end_request(drive, 1); | |
1203 | else { | |
4aff5e23 | 1204 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
1205 | cdrom_end_request(drive, 0); |
1206 | } | |
1207 | return ide_stopped; | |
1208 | } | |
1209 | ||
1210 | /* Figure out how much data to transfer. */ | |
1211 | thislen = rq->data_len; | |
68661c53 BZ |
1212 | if (thislen > len) |
1213 | thislen = len; | |
1da177e4 | 1214 | |
8606ab09 | 1215 | if (ireason == 0) { |
68661c53 BZ |
1216 | write = 1; |
1217 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
1218 | } else if (ireason == 2) { | |
1219 | write = 0; | |
1220 | xferfunc = HWIF(drive)->atapi_input_bytes; | |
1da177e4 LT |
1221 | } |
1222 | ||
68661c53 | 1223 | if (xferfunc) { |
1da177e4 | 1224 | if (!rq->data) { |
f1071e62 BZ |
1225 | printk(KERN_ERR "%s: confused, missing data\n", |
1226 | drive->name); | |
68661c53 BZ |
1227 | blk_dump_rq_flags(rq, write ? "cdrom_pc_intr, write" |
1228 | : "cdrom_pc_intr, read"); | |
f1071e62 | 1229 | goto pad; |
1da177e4 LT |
1230 | } |
1231 | /* Transfer the data. */ | |
68661c53 | 1232 | xferfunc(drive, rq->data, thislen); |
1da177e4 | 1233 | |
1da177e4 | 1234 | /* Keep count of how much data we've moved. */ |
5a5222d9 | 1235 | len -= thislen; |
1da177e4 LT |
1236 | rq->data += thislen; |
1237 | rq->data_len -= thislen; | |
1238 | ||
68661c53 | 1239 | if (write && blk_sense_request(rq)) |
1da177e4 LT |
1240 | rq->sense_len += thislen; |
1241 | } else { | |
1da177e4 | 1242 | printk (KERN_ERR "%s: cdrom_pc_intr: The drive " |
1ad55440 RK |
1243 | "appears confused (ireason = 0x%02x). " |
1244 | "Trying to recover by ending request.\n", | |
1da177e4 | 1245 | drive->name, ireason); |
4aff5e23 | 1246 | rq->cmd_flags |= REQ_FAILED; |
1ad55440 RK |
1247 | cdrom_end_request(drive, 0); |
1248 | return ide_stopped; | |
1da177e4 | 1249 | } |
f1071e62 | 1250 | pad: |
5a5222d9 BZ |
1251 | /* |
1252 | * If we haven't moved enough data to satisfy the drive, | |
1253 | * add some padding. | |
1254 | */ | |
1255 | if (len > 0) | |
1256 | ide_cd_pad_transfer(drive, xferfunc, len); | |
1257 | ||
1da177e4 LT |
1258 | /* Now we wait for another interrupt. */ |
1259 | ide_set_handler(drive, &cdrom_pc_intr, ATAPI_WAIT_PC, cdrom_timer_expiry); | |
1260 | return ide_started; | |
1261 | } | |
1262 | ||
1263 | static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive) | |
1264 | { | |
1265 | struct request *rq = HWGROUP(drive)->rq; | |
1266 | ||
1267 | if (!rq->timeout) | |
1268 | rq->timeout = ATAPI_WAIT_PC; | |
1269 | ||
1270 | /* Send the command to the drive and return. */ | |
1271 | return cdrom_transfer_packet_command(drive, rq, &cdrom_pc_intr); | |
1272 | } | |
1273 | ||
1274 | ||
1275 | static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive) | |
1276 | { | |
1277 | int len; | |
1278 | struct request *rq = HWGROUP(drive)->rq; | |
1279 | struct cdrom_info *info = drive->driver_data; | |
1280 | ||
1281 | info->dma = 0; | |
4aff5e23 | 1282 | rq->cmd_flags &= ~REQ_FAILED; |
1da177e4 LT |
1283 | len = rq->data_len; |
1284 | ||
1285 | /* Start sending the command to the drive. */ | |
1286 | return cdrom_start_packet_command(drive, len, cdrom_do_pc_continuation); | |
1287 | } | |
1288 | ||
1289 | ||
dbe217af | 1290 | static int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq) |
1da177e4 LT |
1291 | { |
1292 | struct request_sense sense; | |
1293 | int retries = 10; | |
4aff5e23 | 1294 | unsigned int flags = rq->cmd_flags; |
1da177e4 LT |
1295 | |
1296 | if (rq->sense == NULL) | |
1297 | rq->sense = &sense; | |
1298 | ||
1299 | /* Start of retry loop. */ | |
1300 | do { | |
1301 | int error; | |
1302 | unsigned long time = jiffies; | |
4aff5e23 | 1303 | rq->cmd_flags = flags; |
1da177e4 LT |
1304 | |
1305 | error = ide_do_drive_cmd(drive, rq, ide_wait); | |
1306 | time = jiffies - time; | |
1307 | ||
1308 | /* FIXME: we should probably abort/retry or something | |
1309 | * in case of failure */ | |
4aff5e23 | 1310 | if (rq->cmd_flags & REQ_FAILED) { |
1da177e4 LT |
1311 | /* The request failed. Retry if it was due to a unit |
1312 | attention status | |
1313 | (usually means media was changed). */ | |
1314 | struct request_sense *reqbuf = rq->sense; | |
1315 | ||
1316 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
1317 | cdrom_saw_media_change(drive); | |
1318 | else if (reqbuf->sense_key == NOT_READY && | |
1319 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
1320 | /* The drive is in the process of loading | |
1321 | a disk. Retry, but wait a little to give | |
1322 | the drive time to complete the load. */ | |
1323 | ssleep(2); | |
1324 | } else { | |
1325 | /* Otherwise, don't retry. */ | |
1326 | retries = 0; | |
1327 | } | |
1328 | --retries; | |
1329 | } | |
1330 | ||
1331 | /* End of retry loop. */ | |
4aff5e23 | 1332 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
1da177e4 LT |
1333 | |
1334 | /* Return an error if the command failed. */ | |
4aff5e23 | 1335 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
1336 | } |
1337 | ||
1338 | /* | |
1339 | * Write handling | |
1340 | */ | |
858119e1 | 1341 | static int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason) |
1da177e4 LT |
1342 | { |
1343 | /* Two notes about IDE interrupt reason here - 0 means that | |
1344 | * the drive wants to receive data from us, 2 means that | |
1345 | * the drive is expecting to transfer data to us. | |
1346 | */ | |
1347 | if (ireason == 0) | |
1348 | return 0; | |
1349 | else if (ireason == 2) { | |
5a5222d9 BZ |
1350 | ide_hwif_t *hwif = drive->hwif; |
1351 | ||
1da177e4 | 1352 | /* Whoops... The drive wants to send data. */ |
35379c07 BZ |
1353 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
1354 | drive->name, __FUNCTION__); | |
1da177e4 | 1355 | |
5a5222d9 | 1356 | ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len); |
1da177e4 LT |
1357 | } else { |
1358 | /* Drive wants a command packet, or invalid ireason... */ | |
35379c07 BZ |
1359 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
1360 | drive->name, __FUNCTION__, ireason); | |
1da177e4 LT |
1361 | } |
1362 | ||
1363 | cdrom_end_request(drive, 0); | |
1364 | return 1; | |
1365 | } | |
1366 | ||
aaa04c28 KU |
1367 | /* |
1368 | * Called from blk_end_request_callback() after the data of the request | |
1369 | * is completed and before the request is completed. | |
1370 | * By returning value '1', blk_end_request_callback() returns immediately | |
1371 | * without completing the request. | |
1372 | */ | |
1373 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) | |
1374 | { | |
1375 | return 1; | |
1376 | } | |
1377 | ||
1da177e4 LT |
1378 | /* |
1379 | * best way to deal with dma that is not sector aligned right now... note | |
1380 | * that in this path we are not using ->data or ->buffer at all. this irs | |
1381 | * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the | |
1382 | * future. | |
1383 | */ | |
1384 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) | |
1385 | { | |
1386 | struct cdrom_info *info = drive->driver_data; | |
1387 | struct request *rq = HWGROUP(drive)->rq; | |
1388 | int dma_error, dma, stat, ireason, len, thislen; | |
1389 | u8 lowcyl, highcyl; | |
1390 | xfer_func_t *xferfunc; | |
1391 | unsigned long flags; | |
1392 | ||
1393 | /* Check for errors. */ | |
1394 | dma_error = 0; | |
1395 | dma = info->dma; | |
1396 | if (dma) { | |
1397 | info->dma = 0; | |
1398 | dma_error = HWIF(drive)->ide_dma_end(drive); | |
eba15fba BZ |
1399 | if (dma_error) { |
1400 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, | |
1401 | rq_data_dir(rq) ? "write" : "read"); | |
1402 | ide_dma_off(drive); | |
1403 | } | |
1da177e4 LT |
1404 | } |
1405 | ||
1406 | if (cdrom_decode_status(drive, 0, &stat)) | |
1407 | return ide_stopped; | |
1408 | ||
1409 | /* | |
1410 | * using dma, transfer is complete now | |
1411 | */ | |
1412 | if (dma) { | |
eba15fba | 1413 | if (dma_error) |
1da177e4 | 1414 | return ide_error(drive, "dma error", stat); |
1da177e4 | 1415 | |
aaa04c28 KU |
1416 | spin_lock_irqsave(&ide_lock, flags); |
1417 | if (__blk_end_request(rq, 0, rq->data_len)) | |
1418 | BUG(); | |
1419 | HWGROUP(drive)->rq = NULL; | |
1420 | spin_unlock_irqrestore(&ide_lock, flags); | |
1421 | ||
1422 | return ide_stopped; | |
1da177e4 LT |
1423 | } |
1424 | ||
1425 | /* | |
1426 | * ok we fall to pio :/ | |
1427 | */ | |
1428 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; | |
1429 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); | |
1430 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1431 | ||
1432 | len = lowcyl + (256 * highcyl); | |
1433 | thislen = rq->data_len; | |
1434 | if (thislen > len) | |
1435 | thislen = len; | |
1436 | ||
1437 | /* | |
1438 | * If DRQ is clear, the command has completed. | |
1439 | */ | |
aaa04c28 KU |
1440 | if ((stat & DRQ_STAT) == 0) { |
1441 | spin_lock_irqsave(&ide_lock, flags); | |
4f4f6c25 | 1442 | if (__blk_end_request(rq, 0, rq->data_len)) |
aaa04c28 KU |
1443 | BUG(); |
1444 | HWGROUP(drive)->rq = NULL; | |
1445 | spin_unlock_irqrestore(&ide_lock, flags); | |
1446 | ||
1447 | return ide_stopped; | |
1448 | } | |
1da177e4 LT |
1449 | |
1450 | /* | |
1451 | * check which way to transfer data | |
1452 | */ | |
1453 | if (rq_data_dir(rq) == WRITE) { | |
1454 | /* | |
1455 | * write to drive | |
1456 | */ | |
1457 | if (cdrom_write_check_ireason(drive, len, ireason)) | |
1458 | return ide_stopped; | |
1459 | ||
1460 | xferfunc = HWIF(drive)->atapi_output_bytes; | |
1461 | } else { | |
1462 | /* | |
1463 | * read from drive | |
1464 | */ | |
1465 | if (cdrom_read_check_ireason(drive, len, ireason)) | |
1466 | return ide_stopped; | |
1467 | ||
1468 | xferfunc = HWIF(drive)->atapi_input_bytes; | |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * transfer data | |
1473 | */ | |
1474 | while (thislen > 0) { | |
1475 | int blen = blen = rq->data_len; | |
1476 | char *ptr = rq->data; | |
1477 | ||
1478 | /* | |
1479 | * bio backed? | |
1480 | */ | |
1481 | if (rq->bio) { | |
1482 | ptr = bio_data(rq->bio); | |
1483 | blen = bio_iovec(rq->bio)->bv_len; | |
1484 | } | |
1485 | ||
1486 | if (!ptr) { | |
1487 | printk(KERN_ERR "%s: confused, missing data\n", drive->name); | |
1488 | break; | |
1489 | } | |
1490 | ||
1491 | if (blen > thislen) | |
1492 | blen = thislen; | |
1493 | ||
1494 | xferfunc(drive, ptr, blen); | |
1495 | ||
1496 | thislen -= blen; | |
1497 | len -= blen; | |
1498 | rq->data_len -= blen; | |
1499 | ||
1500 | if (rq->bio) | |
aaa04c28 KU |
1501 | /* |
1502 | * The request can't be completed until DRQ is cleared. | |
1503 | * So complete the data, but don't complete the request | |
1504 | * using the dummy function for the callback feature | |
1505 | * of blk_end_request_callback(). | |
1506 | */ | |
1507 | blk_end_request_callback(rq, 0, blen, | |
1508 | cdrom_newpc_intr_dummy_cb); | |
1da177e4 LT |
1509 | else |
1510 | rq->data += blen; | |
1511 | } | |
1512 | ||
1513 | /* | |
1514 | * pad, if necessary | |
1515 | */ | |
5a5222d9 BZ |
1516 | if (len > 0) |
1517 | ide_cd_pad_transfer(drive, xferfunc, len); | |
1da177e4 | 1518 | |
125e1874 | 1519 | BUG_ON(HWGROUP(drive)->handler != NULL); |
1da177e4 LT |
1520 | |
1521 | ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL); | |
1522 | return ide_started; | |
1da177e4 LT |
1523 | } |
1524 | ||
1525 | static ide_startstop_t cdrom_write_intr(ide_drive_t *drive) | |
1526 | { | |
1527 | int stat, ireason, len, sectors_to_transfer, uptodate; | |
1528 | struct cdrom_info *info = drive->driver_data; | |
1529 | int dma_error = 0, dma = info->dma; | |
1530 | u8 lowcyl = 0, highcyl = 0; | |
1531 | ||
1532 | struct request *rq = HWGROUP(drive)->rq; | |
1533 | ||
1534 | /* Check for errors. */ | |
1535 | if (dma) { | |
1536 | info->dma = 0; | |
b481b238 BZ |
1537 | dma_error = HWIF(drive)->ide_dma_end(drive); |
1538 | if (dma_error) { | |
1539 | printk(KERN_ERR "%s: DMA write error\n", drive->name); | |
7469aaf6 | 1540 | ide_dma_off(drive); |
1da177e4 LT |
1541 | } |
1542 | } | |
1543 | ||
1544 | if (cdrom_decode_status(drive, 0, &stat)) | |
1545 | return ide_stopped; | |
1546 | ||
1547 | /* | |
1548 | * using dma, transfer is complete now | |
1549 | */ | |
1550 | if (dma) { | |
1551 | if (dma_error) | |
1552 | return ide_error(drive, "dma error", stat); | |
1553 | ||
1554 | ide_end_request(drive, 1, rq->nr_sectors); | |
1555 | return ide_stopped; | |
1556 | } | |
1557 | ||
1558 | /* Read the interrupt reason and the transfer length. */ | |
31a71191 | 1559 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
1da177e4 LT |
1560 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
1561 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); | |
1562 | ||
1563 | len = lowcyl + (256 * highcyl); | |
1564 | ||
1565 | /* If DRQ is clear, the command has completed. */ | |
1566 | if ((stat & DRQ_STAT) == 0) { | |
1567 | /* If we're not done writing, complain. | |
1568 | * Otherwise, complete the command normally. | |
1569 | */ | |
1570 | uptodate = 1; | |
1571 | if (rq->current_nr_sectors > 0) { | |
b481b238 BZ |
1572 | printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n", |
1573 | drive->name, __FUNCTION__, | |
1574 | rq->current_nr_sectors); | |
1da177e4 LT |
1575 | uptodate = 0; |
1576 | } | |
1577 | cdrom_end_request(drive, uptodate); | |
1578 | return ide_stopped; | |
1579 | } | |
1580 | ||
1581 | /* Check that the drive is expecting to do the same thing we are. */ | |
1582 | if (cdrom_write_check_ireason(drive, len, ireason)) | |
1583 | return ide_stopped; | |
1584 | ||
1585 | sectors_to_transfer = len / SECTOR_SIZE; | |
1586 | ||
1587 | /* | |
1588 | * now loop and write out the data | |
1589 | */ | |
1590 | while (sectors_to_transfer > 0) { | |
1591 | int this_transfer; | |
1592 | ||
1593 | if (!rq->current_nr_sectors) { | |
b481b238 BZ |
1594 | printk(KERN_ERR "%s: %s: confused, missing data\n", |
1595 | drive->name, __FUNCTION__); | |
1da177e4 LT |
1596 | break; |
1597 | } | |
1598 | ||
1599 | /* | |
1600 | * Figure out how many sectors we can transfer | |
1601 | */ | |
1602 | this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors); | |
1603 | ||
1604 | while (this_transfer > 0) { | |
1605 | HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE); | |
1606 | rq->buffer += SECTOR_SIZE; | |
1607 | --rq->nr_sectors; | |
1608 | --rq->current_nr_sectors; | |
1609 | ++rq->sector; | |
1610 | --this_transfer; | |
1611 | --sectors_to_transfer; | |
1612 | } | |
1613 | ||
1614 | /* | |
1615 | * current buffer complete, move on | |
1616 | */ | |
1617 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1618 | cdrom_end_request(drive, 1); | |
1619 | } | |
1620 | ||
1621 | /* re-arm handler */ | |
1622 | ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL); | |
1623 | return ide_started; | |
1624 | } | |
1625 | ||
1626 | static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive) | |
1627 | { | |
1628 | struct request *rq = HWGROUP(drive)->rq; | |
1629 | ||
1630 | #if 0 /* the immediate bit */ | |
1631 | rq->cmd[1] = 1 << 3; | |
1632 | #endif | |
1633 | rq->timeout = ATAPI_WAIT_PC; | |
1634 | ||
1635 | return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr); | |
1636 | } | |
1637 | ||
1638 | static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) | |
1639 | { | |
1640 | struct cdrom_info *info = drive->driver_data; | |
1641 | struct gendisk *g = info->disk; | |
1642 | unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1643 | ||
1644 | /* | |
1645 | * writes *must* be hardware frame aligned | |
1646 | */ | |
1647 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || | |
1648 | (rq->sector & (sectors_per_frame - 1))) { | |
1649 | cdrom_end_request(drive, 0); | |
1650 | return ide_stopped; | |
1651 | } | |
1652 | ||
1653 | /* | |
1654 | * disk has become write protected | |
1655 | */ | |
1656 | if (g->policy) { | |
1657 | cdrom_end_request(drive, 0); | |
1658 | return ide_stopped; | |
1659 | } | |
1660 | ||
1da177e4 LT |
1661 | info->nsectors_buffered = 0; |
1662 | ||
1663 | /* use dma, if possible. we don't need to check more, since we | |
1664 | * know that the transfer is always (at least!) frame aligned */ | |
1665 | info->dma = drive->using_dma ? 1 : 0; | |
1da177e4 LT |
1666 | |
1667 | info->devinfo.media_written = 1; | |
1668 | ||
1669 | /* Start sending the write request to the drive. */ | |
1670 | return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont); | |
1671 | } | |
1672 | ||
1673 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1674 | { | |
1675 | struct request *rq = HWGROUP(drive)->rq; | |
1676 | ||
1677 | if (!rq->timeout) | |
1678 | rq->timeout = ATAPI_WAIT_PC; | |
1679 | ||
1680 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); | |
1681 | } | |
1682 | ||
1683 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) | |
1684 | { | |
1685 | struct cdrom_info *info = drive->driver_data; | |
1686 | ||
4aff5e23 | 1687 | rq->cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1688 | |
1689 | info->dma = 0; | |
1da177e4 LT |
1690 | |
1691 | /* | |
1692 | * sg request | |
1693 | */ | |
1694 | if (rq->bio) { | |
1695 | int mask = drive->queue->dma_alignment; | |
1696 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); | |
1697 | ||
1da177e4 LT |
1698 | info->dma = drive->using_dma; |
1699 | ||
1700 | /* | |
1701 | * check if dma is safe | |
5d9e4ea5 LT |
1702 | * |
1703 | * NOTE! The "len" and "addr" checks should possibly have | |
1704 | * separate masks. | |
1da177e4 | 1705 | */ |
4e7c6816 | 1706 | if ((rq->data_len & 15) || (addr & mask)) |
1da177e4 LT |
1707 | info->dma = 0; |
1708 | } | |
1709 | ||
1710 | /* Start sending the command to the drive. */ | |
1711 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); | |
1712 | } | |
1713 | ||
1714 | /**************************************************************************** | |
1715 | * cdrom driver request routine. | |
1716 | */ | |
1717 | static ide_startstop_t | |
1718 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) | |
1719 | { | |
1720 | ide_startstop_t action; | |
1721 | struct cdrom_info *info = drive->driver_data; | |
1722 | ||
1723 | if (blk_fs_request(rq)) { | |
1724 | if (CDROM_CONFIG_FLAGS(drive)->seeking) { | |
1725 | unsigned long elapsed = jiffies - info->start_seek; | |
1726 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); | |
1727 | ||
1728 | if ((stat & SEEK_STAT) != SEEK_STAT) { | |
1729 | if (elapsed < IDECD_SEEK_TIMEOUT) { | |
1730 | ide_stall_queue(drive, IDECD_SEEK_TIMER); | |
1731 | return ide_stopped; | |
1732 | } | |
1733 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); | |
1734 | } | |
1735 | CDROM_CONFIG_FLAGS(drive)->seeking = 0; | |
1736 | } | |
1737 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { | |
1738 | action = cdrom_start_seek(drive, block); | |
1739 | } else { | |
1740 | if (rq_data_dir(rq) == READ) | |
1741 | action = cdrom_start_read(drive, block); | |
1742 | else | |
1743 | action = cdrom_start_write(drive, rq); | |
1744 | } | |
1745 | info->last_block = block; | |
1746 | return action; | |
cea2885a JA |
1747 | } else if (rq->cmd_type == REQ_TYPE_SENSE || |
1748 | rq->cmd_type == REQ_TYPE_ATA_PC) { | |
1da177e4 | 1749 | return cdrom_do_packet_command(drive); |
4aff5e23 | 1750 | } else if (blk_pc_request(rq)) { |
1da177e4 | 1751 | return cdrom_do_block_pc(drive, rq); |
4aff5e23 | 1752 | } else if (blk_special_request(rq)) { |
1da177e4 LT |
1753 | /* |
1754 | * right now this can only be a reset... | |
1755 | */ | |
1756 | cdrom_end_request(drive, 1); | |
1757 | return ide_stopped; | |
1758 | } | |
1759 | ||
1760 | blk_dump_rq_flags(rq, "ide-cd bad flags"); | |
1761 | cdrom_end_request(drive, 0); | |
1762 | return ide_stopped; | |
1763 | } | |
1764 | ||
1765 | ||
1766 | ||
1767 | /**************************************************************************** | |
1768 | * Ioctl handling. | |
1769 | * | |
1770 | * Routines which queue packet commands take as a final argument a pointer | |
1771 | * to a request_sense struct. If execution of the command results | |
1772 | * in an error with a CHECK CONDITION status, this structure will be filled | |
1773 | * with the results of the subsequent request sense command. The pointer | |
1774 | * can also be NULL, in which case no sense information is returned. | |
1775 | */ | |
1776 | ||
1777 | #if ! STANDARD_ATAPI | |
1778 | static inline | |
1779 | int bin2bcd (int x) | |
1780 | { | |
1781 | return (x%10) | ((x/10) << 4); | |
1782 | } | |
1783 | ||
1784 | ||
1785 | static inline | |
1786 | int bcd2bin (int x) | |
1787 | { | |
1788 | return (x >> 4) * 10 + (x & 0x0f); | |
1789 | } | |
1790 | ||
1791 | static | |
1792 | void msf_from_bcd (struct atapi_msf *msf) | |
1793 | { | |
1794 | msf->minute = bcd2bin (msf->minute); | |
1795 | msf->second = bcd2bin (msf->second); | |
1796 | msf->frame = bcd2bin (msf->frame); | |
1797 | } | |
1798 | ||
1799 | #endif /* not STANDARD_ATAPI */ | |
1800 | ||
1801 | ||
1802 | static inline | |
1803 | void lba_to_msf (int lba, byte *m, byte *s, byte *f) | |
1804 | { | |
1805 | lba += CD_MSF_OFFSET; | |
1806 | lba &= 0xffffff; /* negative lbas use only 24 bits */ | |
1807 | *m = lba / (CD_SECS * CD_FRAMES); | |
1808 | lba %= (CD_SECS * CD_FRAMES); | |
1809 | *s = lba / CD_FRAMES; | |
1810 | *f = lba % CD_FRAMES; | |
1811 | } | |
1812 | ||
1813 | ||
1814 | static inline | |
1815 | int msf_to_lba (byte m, byte s, byte f) | |
1816 | { | |
1817 | return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; | |
1818 | } | |
1819 | ||
1820 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) | |
1821 | { | |
1822 | struct request req; | |
1823 | struct cdrom_info *info = drive->driver_data; | |
1824 | struct cdrom_device_info *cdi = &info->devinfo; | |
1825 | ||
1826 | cdrom_prepare_request(drive, &req); | |
1827 | ||
1828 | req.sense = sense; | |
1829 | req.cmd[0] = GPCMD_TEST_UNIT_READY; | |
4aff5e23 | 1830 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1831 | |
1832 | #if ! STANDARD_ATAPI | |
1833 | /* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to | |
1834 | switch CDs instead of supporting the LOAD_UNLOAD opcode */ | |
1835 | ||
1836 | req.cmd[7] = cdi->sanyo_slot % 3; | |
1837 | #endif /* not STANDARD_ATAPI */ | |
1838 | ||
1839 | return cdrom_queue_packet_command(drive, &req); | |
1840 | } | |
1841 | ||
1842 | ||
1843 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ | |
1844 | static int | |
1845 | cdrom_lockdoor(ide_drive_t *drive, int lockflag, struct request_sense *sense) | |
1846 | { | |
1847 | struct request_sense my_sense; | |
1848 | struct request req; | |
1849 | int stat; | |
1850 | ||
1851 | if (sense == NULL) | |
1852 | sense = &my_sense; | |
1853 | ||
1854 | /* If the drive cannot lock the door, just pretend. */ | |
1855 | if (CDROM_CONFIG_FLAGS(drive)->no_doorlock) { | |
1856 | stat = 0; | |
1857 | } else { | |
1858 | cdrom_prepare_request(drive, &req); | |
1859 | req.sense = sense; | |
1860 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; | |
1861 | req.cmd[4] = lockflag ? 1 : 0; | |
1862 | stat = cdrom_queue_packet_command(drive, &req); | |
1863 | } | |
1864 | ||
1865 | /* If we got an illegal field error, the drive | |
1866 | probably cannot lock the door. */ | |
1867 | if (stat != 0 && | |
1868 | sense->sense_key == ILLEGAL_REQUEST && | |
1869 | (sense->asc == 0x24 || sense->asc == 0x20)) { | |
1870 | printk (KERN_ERR "%s: door locking not supported\n", | |
1871 | drive->name); | |
1872 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; | |
1873 | stat = 0; | |
1874 | } | |
1875 | ||
1876 | /* no medium, that's alright. */ | |
1877 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) | |
1878 | stat = 0; | |
1879 | ||
1880 | if (stat == 0) | |
1881 | CDROM_STATE_FLAGS(drive)->door_locked = lockflag; | |
1882 | ||
1883 | return stat; | |
1884 | } | |
1885 | ||
1886 | ||
1887 | /* Eject the disk if EJECTFLAG is 0. | |
1888 | If EJECTFLAG is 1, try to reload the disk. */ | |
1889 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, | |
1890 | struct request_sense *sense) | |
1891 | { | |
1892 | struct request req; | |
1893 | char loej = 0x02; | |
1894 | ||
1895 | if (CDROM_CONFIG_FLAGS(drive)->no_eject && !ejectflag) | |
1896 | return -EDRIVE_CANT_DO_THIS; | |
1897 | ||
1898 | /* reload fails on some drives, if the tray is locked */ | |
1899 | if (CDROM_STATE_FLAGS(drive)->door_locked && ejectflag) | |
1900 | return 0; | |
1901 | ||
1902 | cdrom_prepare_request(drive, &req); | |
1903 | ||
1904 | /* only tell drive to close tray if open, if it can do that */ | |
1905 | if (ejectflag && !CDROM_CONFIG_FLAGS(drive)->close_tray) | |
1906 | loej = 0; | |
1907 | ||
1908 | req.sense = sense; | |
1909 | req.cmd[0] = GPCMD_START_STOP_UNIT; | |
1910 | req.cmd[4] = loej | (ejectflag != 0); | |
1911 | return cdrom_queue_packet_command(drive, &req); | |
1912 | } | |
1913 | ||
1914 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, | |
1915 | unsigned long *sectors_per_frame, | |
1916 | struct request_sense *sense) | |
1917 | { | |
1918 | struct { | |
1919 | __u32 lba; | |
1920 | __u32 blocklen; | |
1921 | } capbuf; | |
1922 | ||
1923 | int stat; | |
1924 | struct request req; | |
1925 | ||
1926 | cdrom_prepare_request(drive, &req); | |
1927 | ||
1928 | req.sense = sense; | |
1929 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
1930 | req.data = (char *)&capbuf; | |
1931 | req.data_len = sizeof(capbuf); | |
4aff5e23 | 1932 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1933 | |
1934 | stat = cdrom_queue_packet_command(drive, &req); | |
1935 | if (stat == 0) { | |
1936 | *capacity = 1 + be32_to_cpu(capbuf.lba); | |
1937 | *sectors_per_frame = | |
1938 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; | |
1939 | } | |
1940 | ||
1941 | return stat; | |
1942 | } | |
1943 | ||
1944 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
1945 | int format, char *buf, int buflen, | |
1946 | struct request_sense *sense) | |
1947 | { | |
1948 | struct request req; | |
1949 | ||
1950 | cdrom_prepare_request(drive, &req); | |
1951 | ||
1952 | req.sense = sense; | |
1953 | req.data = buf; | |
1954 | req.data_len = buflen; | |
4aff5e23 | 1955 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
1956 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
1957 | req.cmd[6] = trackno; | |
1958 | req.cmd[7] = (buflen >> 8); | |
1959 | req.cmd[8] = (buflen & 0xff); | |
1960 | req.cmd[9] = (format << 6); | |
1961 | ||
1962 | if (msf_flag) | |
1963 | req.cmd[1] = 2; | |
1964 | ||
1965 | return cdrom_queue_packet_command(drive, &req); | |
1966 | } | |
1967 | ||
1968 | ||
1969 | /* Try to read the entire TOC for the disk into our internal buffer. */ | |
1970 | static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense) | |
1971 | { | |
1972 | int stat, ntracks, i; | |
1973 | struct cdrom_info *info = drive->driver_data; | |
1974 | struct cdrom_device_info *cdi = &info->devinfo; | |
1975 | struct atapi_toc *toc = info->toc; | |
1976 | struct { | |
1977 | struct atapi_toc_header hdr; | |
1978 | struct atapi_toc_entry ent; | |
1979 | } ms_tmp; | |
1980 | long last_written; | |
1981 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
1982 | ||
1983 | if (toc == NULL) { | |
1984 | /* Try to allocate space. */ | |
2a91f3e5 | 1985 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 LT |
1986 | if (toc == NULL) { |
1987 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); | |
1988 | return -ENOMEM; | |
1989 | } | |
2a91f3e5 | 1990 | info->toc = toc; |
1da177e4 LT |
1991 | } |
1992 | ||
1993 | /* Check to see if the existing data is still valid. | |
1994 | If it is, just return. */ | |
1995 | (void) cdrom_check_status(drive, sense); | |
1996 | ||
1997 | if (CDROM_STATE_FLAGS(drive)->toc_valid) | |
1998 | return 0; | |
1999 | ||
2000 | /* Try to get the total cdrom capacity and sector size. */ | |
2001 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, | |
2002 | sense); | |
2003 | if (stat) | |
2004 | toc->capacity = 0x1fffff; | |
2005 | ||
2006 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af AC |
2007 | /* Save a private copy of te TOC capacity for error handling */ |
2008 | drive->probed_capacity = toc->capacity * sectors_per_frame; | |
2009 | ||
1da177e4 LT |
2010 | blk_queue_hardsect_size(drive->queue, |
2011 | sectors_per_frame << SECTOR_BITS); | |
2012 | ||
2013 | /* First read just the header, so we know how long the TOC is. */ | |
2014 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, | |
2015 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
2016 | if (stat) |
2017 | return stat; | |
1da177e4 LT |
2018 | |
2019 | #if ! STANDARD_ATAPI | |
2020 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { | |
2021 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); | |
2022 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); | |
2023 | } | |
2024 | #endif /* not STANDARD_ATAPI */ | |
2025 | ||
2026 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
2027 | if (ntracks <= 0) | |
2028 | return -EIO; | |
2029 | if (ntracks > MAX_TRACKS) | |
2030 | ntracks = MAX_TRACKS; | |
2031 | ||
2032 | /* Now read the whole schmeer. */ | |
2033 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, | |
2034 | (char *)&toc->hdr, | |
2035 | sizeof(struct atapi_toc_header) + | |
2036 | (ntracks + 1) * | |
2037 | sizeof(struct atapi_toc_entry), sense); | |
2038 | ||
2039 | if (stat && toc->hdr.first_track > 1) { | |
2040 | /* Cds with CDI tracks only don't have any TOC entries, | |
2041 | despite of this the returned values are | |
2042 | first_track == last_track = number of CDI tracks + 1, | |
2043 | so that this case is indistinguishable from the same | |
2044 | layout plus an additional audio track. | |
2045 | If we get an error for the regular case, we assume | |
2046 | a CDI without additional audio tracks. In this case | |
2047 | the readable TOC is empty (CDI tracks are not included) | |
96de0e25 | 2048 | and only holds the Leadout entry. Heiko Eißfeldt */ |
1da177e4 LT |
2049 | ntracks = 0; |
2050 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
2051 | (char *)&toc->hdr, | |
2052 | sizeof(struct atapi_toc_header) + | |
2053 | (ntracks + 1) * | |
2054 | sizeof(struct atapi_toc_entry), | |
2055 | sense); | |
2056 | if (stat) { | |
2057 | return stat; | |
2058 | } | |
2059 | #if ! STANDARD_ATAPI | |
2060 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { | |
2061 | toc->hdr.first_track = bin2bcd(CDROM_LEADOUT); | |
2062 | toc->hdr.last_track = bin2bcd(CDROM_LEADOUT); | |
2063 | } else | |
2064 | #endif /* not STANDARD_ATAPI */ | |
2065 | { | |
2066 | toc->hdr.first_track = CDROM_LEADOUT; | |
2067 | toc->hdr.last_track = CDROM_LEADOUT; | |
2068 | } | |
2069 | } | |
2070 | ||
2071 | if (stat) | |
2072 | return stat; | |
2073 | ||
2074 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); | |
2075 | ||
2076 | #if ! STANDARD_ATAPI | |
2077 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) { | |
2078 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); | |
2079 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); | |
2080 | } | |
2081 | #endif /* not STANDARD_ATAPI */ | |
2082 | ||
2083 | for (i=0; i<=ntracks; i++) { | |
2084 | #if ! STANDARD_ATAPI | |
2085 | if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) { | |
2086 | if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) | |
2087 | toc->ent[i].track = bcd2bin(toc->ent[i].track); | |
2088 | msf_from_bcd(&toc->ent[i].addr.msf); | |
2089 | } | |
2090 | #endif /* not STANDARD_ATAPI */ | |
2091 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, | |
2092 | toc->ent[i].addr.msf.second, | |
2093 | toc->ent[i].addr.msf.frame); | |
2094 | } | |
2095 | ||
2096 | /* Read the multisession information. */ | |
2097 | if (toc->hdr.first_track != CDROM_LEADOUT) { | |
2098 | /* Read the multisession information. */ | |
2099 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, | |
2100 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
2101 | if (stat) |
2102 | return stat; | |
1da177e4 LT |
2103 | |
2104 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
2105 | } else { | |
2106 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; | |
2107 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ | |
2108 | } | |
2109 | ||
2110 | #if ! STANDARD_ATAPI | |
2111 | if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) { | |
2112 | /* Re-read multisession information using MSF format */ | |
2113 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, | |
2114 | sizeof(ms_tmp), sense); | |
2115 | if (stat) | |
2116 | return stat; | |
2117 | ||
2118 | msf_from_bcd (&ms_tmp.ent.addr.msf); | |
2119 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, | |
2120 | ms_tmp.ent.addr.msf.second, | |
2121 | ms_tmp.ent.addr.msf.frame); | |
2122 | } | |
2123 | #endif /* not STANDARD_ATAPI */ | |
2124 | ||
2125 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
2126 | ||
2127 | /* Now try to get the total cdrom capacity. */ | |
2128 | stat = cdrom_get_last_written(cdi, &last_written); | |
2129 | if (!stat && (last_written > toc->capacity)) { | |
2130 | toc->capacity = last_written; | |
2131 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 2132 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
2133 | } |
2134 | ||
2135 | /* Remember that we've read this stuff. */ | |
2136 | CDROM_STATE_FLAGS(drive)->toc_valid = 1; | |
2137 | ||
2138 | return 0; | |
2139 | } | |
2140 | ||
2141 | ||
2142 | static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf, | |
2143 | int buflen, struct request_sense *sense) | |
2144 | { | |
2145 | struct request req; | |
2146 | ||
2147 | cdrom_prepare_request(drive, &req); | |
2148 | ||
2149 | req.sense = sense; | |
2150 | req.data = buf; | |
2151 | req.data_len = buflen; | |
2152 | req.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
2153 | req.cmd[1] = 2; /* MSF addressing */ | |
2154 | req.cmd[2] = 0x40; /* request subQ data */ | |
2155 | req.cmd[3] = format; | |
2156 | req.cmd[7] = (buflen >> 8); | |
2157 | req.cmd[8] = (buflen & 0xff); | |
2158 | return cdrom_queue_packet_command(drive, &req); | |
2159 | } | |
2160 | ||
2161 | /* ATAPI cdrom drives are free to select the speed you request or any slower | |
2162 | rate :-( Requesting too fast a speed will _not_ produce an error. */ | |
2163 | static int cdrom_select_speed(ide_drive_t *drive, int speed, | |
2164 | struct request_sense *sense) | |
2165 | { | |
2166 | struct request req; | |
2167 | cdrom_prepare_request(drive, &req); | |
2168 | ||
2169 | req.sense = sense; | |
2170 | if (speed == 0) | |
2171 | speed = 0xffff; /* set to max */ | |
2172 | else | |
2173 | speed *= 177; /* Nx to kbytes/s */ | |
2174 | ||
2175 | req.cmd[0] = GPCMD_SET_SPEED; | |
2176 | /* Read Drive speed in kbytes/second MSB */ | |
2177 | req.cmd[2] = (speed >> 8) & 0xff; | |
2178 | /* Read Drive speed in kbytes/second LSB */ | |
2179 | req.cmd[3] = speed & 0xff; | |
2180 | if (CDROM_CONFIG_FLAGS(drive)->cd_r || | |
2181 | CDROM_CONFIG_FLAGS(drive)->cd_rw || | |
2182 | CDROM_CONFIG_FLAGS(drive)->dvd_r) { | |
2183 | /* Write Drive speed in kbytes/second MSB */ | |
2184 | req.cmd[4] = (speed >> 8) & 0xff; | |
2185 | /* Write Drive speed in kbytes/second LSB */ | |
2186 | req.cmd[5] = speed & 0xff; | |
2187 | } | |
2188 | ||
2189 | return cdrom_queue_packet_command(drive, &req); | |
2190 | } | |
2191 | ||
2192 | static int cdrom_play_audio(ide_drive_t *drive, int lba_start, int lba_end) | |
2193 | { | |
2194 | struct request_sense sense; | |
2195 | struct request req; | |
2196 | ||
2197 | cdrom_prepare_request(drive, &req); | |
2198 | ||
2199 | req.sense = &sense; | |
2200 | req.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
2201 | lba_to_msf(lba_start, &req.cmd[3], &req.cmd[4], &req.cmd[5]); | |
2202 | lba_to_msf(lba_end-1, &req.cmd[6], &req.cmd[7], &req.cmd[8]); | |
2203 | ||
2204 | return cdrom_queue_packet_command(drive, &req); | |
2205 | } | |
2206 | ||
2207 | static int cdrom_get_toc_entry(ide_drive_t *drive, int track, | |
2208 | struct atapi_toc_entry **ent) | |
2209 | { | |
2210 | struct cdrom_info *info = drive->driver_data; | |
2211 | struct atapi_toc *toc = info->toc; | |
2212 | int ntracks; | |
2213 | ||
2214 | /* | |
2215 | * don't serve cached data, if the toc isn't valid | |
2216 | */ | |
2217 | if (!CDROM_STATE_FLAGS(drive)->toc_valid) | |
2218 | return -EINVAL; | |
2219 | ||
2220 | /* Check validity of requested track number. */ | |
2221 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
2222 | if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0; | |
2223 | if (track == CDROM_LEADOUT) | |
2224 | *ent = &toc->ent[ntracks]; | |
2225 | else if (track < toc->hdr.first_track || | |
2226 | track > toc->hdr.last_track) | |
2227 | return -EINVAL; | |
2228 | else | |
2229 | *ent = &toc->ent[track - toc->hdr.first_track]; | |
2230 | ||
2231 | return 0; | |
2232 | } | |
2233 | ||
2234 | /* the generic packet interface to cdrom.c */ | |
2235 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, | |
2236 | struct packet_command *cgc) | |
2237 | { | |
2238 | struct request req; | |
2a91f3e5 | 2239 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2240 | |
2241 | if (cgc->timeout <= 0) | |
2242 | cgc->timeout = ATAPI_WAIT_PC; | |
2243 | ||
2244 | /* here we queue the commands from the uniform CD-ROM | |
2245 | layer. the packet must be complete, as we do not | |
2246 | touch it at all. */ | |
2247 | cdrom_prepare_request(drive, &req); | |
2248 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); | |
2249 | if (cgc->sense) | |
2250 | memset(cgc->sense, 0, sizeof(struct request_sense)); | |
2251 | req.data = cgc->buffer; | |
2252 | req.data_len = cgc->buflen; | |
2253 | req.timeout = cgc->timeout; | |
2254 | ||
2255 | if (cgc->quiet) | |
4aff5e23 | 2256 | req.cmd_flags |= REQ_QUIET; |
1da177e4 LT |
2257 | |
2258 | req.sense = cgc->sense; | |
2259 | cgc->stat = cdrom_queue_packet_command(drive, &req); | |
2260 | if (!cgc->stat) | |
2261 | cgc->buflen -= req.data_len; | |
2262 | return cgc->stat; | |
2263 | } | |
2264 | ||
1da177e4 LT |
2265 | static |
2266 | int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi, | |
2267 | unsigned int cmd, void *arg) | |
2268 | ||
2269 | { | |
2a91f3e5 | 2270 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2271 | struct cdrom_info *info = drive->driver_data; |
2272 | int stat; | |
2273 | ||
2274 | switch (cmd) { | |
2275 | /* | |
2276 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since | |
2277 | * atapi doesn't support it | |
2278 | */ | |
2279 | case CDROMPLAYTRKIND: { | |
2280 | unsigned long lba_start, lba_end; | |
2a91f3e5 | 2281 | struct cdrom_ti *ti = arg; |
1da177e4 LT |
2282 | struct atapi_toc_entry *first_toc, *last_toc; |
2283 | ||
2284 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc); | |
2285 | if (stat) | |
2286 | return stat; | |
2287 | ||
2288 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk1, &last_toc); | |
2289 | if (stat) | |
2290 | return stat; | |
2291 | ||
2292 | if (ti->cdti_trk1 != CDROM_LEADOUT) | |
2293 | ++last_toc; | |
2294 | lba_start = first_toc->addr.lba; | |
2295 | lba_end = last_toc->addr.lba; | |
2296 | ||
2297 | if (lba_end <= lba_start) | |
2298 | return -EINVAL; | |
2299 | ||
2300 | return cdrom_play_audio(drive, lba_start, lba_end); | |
2301 | } | |
2302 | ||
2303 | case CDROMREADTOCHDR: { | |
2a91f3e5 | 2304 | struct cdrom_tochdr *tochdr = arg; |
1da177e4 LT |
2305 | struct atapi_toc *toc; |
2306 | ||
2307 | /* Make sure our saved TOC is valid. */ | |
2308 | stat = cdrom_read_toc(drive, NULL); | |
2a91f3e5 JJ |
2309 | if (stat) |
2310 | return stat; | |
1da177e4 LT |
2311 | |
2312 | toc = info->toc; | |
2313 | tochdr->cdth_trk0 = toc->hdr.first_track; | |
2314 | tochdr->cdth_trk1 = toc->hdr.last_track; | |
2315 | ||
2316 | return 0; | |
2317 | } | |
2318 | ||
2319 | case CDROMREADTOCENTRY: { | |
2a91f3e5 | 2320 | struct cdrom_tocentry *tocentry = arg; |
1da177e4 LT |
2321 | struct atapi_toc_entry *toce; |
2322 | ||
2323 | stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce); | |
2a91f3e5 JJ |
2324 | if (stat) |
2325 | return stat; | |
1da177e4 LT |
2326 | |
2327 | tocentry->cdte_ctrl = toce->control; | |
2328 | tocentry->cdte_adr = toce->adr; | |
2329 | if (tocentry->cdte_format == CDROM_MSF) { | |
2330 | lba_to_msf (toce->addr.lba, | |
2331 | &tocentry->cdte_addr.msf.minute, | |
2332 | &tocentry->cdte_addr.msf.second, | |
2333 | &tocentry->cdte_addr.msf.frame); | |
2334 | } else | |
2335 | tocentry->cdte_addr.lba = toce->addr.lba; | |
2336 | ||
2337 | return 0; | |
2338 | } | |
2339 | ||
2340 | default: | |
2341 | return -EINVAL; | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | static | |
2346 | int ide_cdrom_reset (struct cdrom_device_info *cdi) | |
2347 | { | |
2a91f3e5 | 2348 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2349 | struct request_sense sense; |
2350 | struct request req; | |
2351 | int ret; | |
2352 | ||
2353 | cdrom_prepare_request(drive, &req); | |
4aff5e23 JA |
2354 | req.cmd_type = REQ_TYPE_SPECIAL; |
2355 | req.cmd_flags = REQ_QUIET; | |
1da177e4 LT |
2356 | ret = ide_do_drive_cmd(drive, &req, ide_wait); |
2357 | ||
2358 | /* | |
2359 | * A reset will unlock the door. If it was previously locked, | |
2360 | * lock it again. | |
2361 | */ | |
2362 | if (CDROM_STATE_FLAGS(drive)->door_locked) | |
2363 | (void) cdrom_lockdoor(drive, 1, &sense); | |
2364 | ||
2365 | return ret; | |
2366 | } | |
2367 | ||
2368 | ||
2369 | static | |
2370 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) | |
2371 | { | |
2a91f3e5 | 2372 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2373 | struct request_sense sense; |
2374 | ||
2375 | if (position) { | |
2376 | int stat = cdrom_lockdoor(drive, 0, &sense); | |
2a91f3e5 JJ |
2377 | if (stat) |
2378 | return stat; | |
1da177e4 LT |
2379 | } |
2380 | ||
2381 | return cdrom_eject(drive, !position, &sense); | |
2382 | } | |
2383 | ||
2384 | static | |
2385 | int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock) | |
2386 | { | |
2a91f3e5 | 2387 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2388 | return cdrom_lockdoor(drive, lock, NULL); |
2389 | } | |
2390 | ||
9235e68b EP |
2391 | static |
2392 | int ide_cdrom_get_capabilities(ide_drive_t *drive, struct atapi_capabilities_page *cap) | |
2393 | { | |
2394 | struct cdrom_info *info = drive->driver_data; | |
2395 | struct cdrom_device_info *cdi = &info->devinfo; | |
2396 | struct packet_command cgc; | |
2397 | int stat, attempts = 3, size = sizeof(*cap); | |
2398 | ||
2399 | /* | |
2400 | * ACER50 (and others?) require the full spec length mode sense | |
2401 | * page capabilities size, but older drives break. | |
2402 | */ | |
2403 | if (!(!strcmp(drive->id->model, "ATAPI CD ROM DRIVE 50X MAX") || | |
2404 | !strcmp(drive->id->model, "WPI CDS-32X"))) | |
2405 | size -= sizeof(cap->pad); | |
2406 | ||
2407 | init_cdrom_command(&cgc, cap, size, CGC_DATA_UNKNOWN); | |
2408 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ | |
2409 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); | |
2410 | if (!stat) | |
2411 | break; | |
2412 | } while (--attempts); | |
2413 | return stat; | |
2414 | } | |
2415 | ||
2416 | static | |
2417 | void ide_cdrom_update_speed (ide_drive_t *drive, struct atapi_capabilities_page *cap) | |
2418 | { | |
481c8c64 BZ |
2419 | u16 curspeed, maxspeed; |
2420 | ||
9235e68b EP |
2421 | /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */ |
2422 | if (!drive->id->model[0] && | |
2423 | !strncmp(drive->id->fw_rev, "241N", 4)) { | |
481c8c64 BZ |
2424 | curspeed = le16_to_cpu(cap->curspeed); |
2425 | maxspeed = le16_to_cpu(cap->maxspeed); | |
9235e68b | 2426 | } else { |
481c8c64 BZ |
2427 | curspeed = be16_to_cpu(cap->curspeed); |
2428 | maxspeed = be16_to_cpu(cap->maxspeed); | |
9235e68b | 2429 | } |
481c8c64 BZ |
2430 | |
2431 | CDROM_STATE_FLAGS(drive)->current_speed = (curspeed + (176/2)) / 176; | |
2432 | CDROM_CONFIG_FLAGS(drive)->max_speed = (maxspeed + (176/2)) / 176; | |
9235e68b EP |
2433 | } |
2434 | ||
1da177e4 LT |
2435 | static |
2436 | int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed) | |
2437 | { | |
2a91f3e5 | 2438 | ide_drive_t *drive = cdi->handle; |
1da177e4 | 2439 | struct request_sense sense; |
9235e68b | 2440 | struct atapi_capabilities_page cap; |
1da177e4 LT |
2441 | int stat; |
2442 | ||
2443 | if ((stat = cdrom_select_speed(drive, speed, &sense)) < 0) | |
2444 | return stat; | |
2445 | ||
9235e68b EP |
2446 | if (!ide_cdrom_get_capabilities(drive, &cap)) { |
2447 | ide_cdrom_update_speed(drive, &cap); | |
2448 | cdi->speed = CDROM_STATE_FLAGS(drive)->current_speed; | |
2449 | } | |
1da177e4 LT |
2450 | return 0; |
2451 | } | |
2452 | ||
2453 | /* | |
2454 | * add logic to try GET_EVENT command first to check for media and tray | |
2455 | * status. this should be supported by newer cd-r/w and all DVD etc | |
2456 | * drives | |
2457 | */ | |
2458 | static | |
2459 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) | |
2460 | { | |
2a91f3e5 | 2461 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2462 | struct media_event_desc med; |
2463 | struct request_sense sense; | |
2464 | int stat; | |
2465 | ||
2466 | if (slot_nr != CDSL_CURRENT) | |
2467 | return -EINVAL; | |
2468 | ||
2469 | stat = cdrom_check_status(drive, &sense); | |
2470 | if (!stat || sense.sense_key == UNIT_ATTENTION) | |
2471 | return CDS_DISC_OK; | |
2472 | ||
2473 | if (!cdrom_get_media_event(cdi, &med)) { | |
2474 | if (med.media_present) | |
2475 | return CDS_DISC_OK; | |
2476 | else if (med.door_open) | |
2477 | return CDS_TRAY_OPEN; | |
2478 | else | |
2479 | return CDS_NO_DISC; | |
2480 | } | |
2481 | ||
2482 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) | |
2483 | return CDS_DISC_OK; | |
2484 | ||
2485 | /* | |
2486 | * If not using Mt Fuji extended media tray reports, | |
2487 | * just return TRAY_OPEN since ATAPI doesn't provide | |
2488 | * any other way to detect this... | |
2489 | */ | |
2490 | if (sense.sense_key == NOT_READY) { | |
dbe217af AC |
2491 | if (sense.asc == 0x3a && sense.ascq == 1) |
2492 | return CDS_NO_DISC; | |
2493 | else | |
2494 | return CDS_TRAY_OPEN; | |
1da177e4 | 2495 | } |
1da177e4 LT |
2496 | return CDS_DRIVE_NOT_READY; |
2497 | } | |
2498 | ||
2499 | static | |
2500 | int ide_cdrom_get_last_session (struct cdrom_device_info *cdi, | |
2501 | struct cdrom_multisession *ms_info) | |
2502 | { | |
2503 | struct atapi_toc *toc; | |
2a91f3e5 | 2504 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2505 | struct cdrom_info *info = drive->driver_data; |
2506 | struct request_sense sense; | |
2507 | int ret; | |
2508 | ||
2509 | if (!CDROM_STATE_FLAGS(drive)->toc_valid || info->toc == NULL) | |
2510 | if ((ret = cdrom_read_toc(drive, &sense))) | |
2511 | return ret; | |
2512 | ||
2513 | toc = info->toc; | |
2514 | ms_info->addr.lba = toc->last_session_lba; | |
2515 | ms_info->xa_flag = toc->xa_flag; | |
2516 | ||
2517 | return 0; | |
2518 | } | |
2519 | ||
2520 | static | |
2521 | int ide_cdrom_get_mcn (struct cdrom_device_info *cdi, | |
2522 | struct cdrom_mcn *mcn_info) | |
2523 | { | |
2524 | int stat; | |
2525 | char mcnbuf[24]; | |
2a91f3e5 | 2526 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2527 | |
2528 | /* get MCN */ | |
2529 | if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL))) | |
2530 | return stat; | |
2531 | ||
2532 | memcpy (mcn_info->medium_catalog_number, mcnbuf+9, | |
2533 | sizeof (mcn_info->medium_catalog_number)-1); | |
2534 | mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1] | |
2535 | = '\0'; | |
2536 | ||
2537 | return 0; | |
2538 | } | |
2539 | ||
2540 | ||
2541 | ||
2542 | /**************************************************************************** | |
2543 | * Other driver requests (open, close, check media change). | |
2544 | */ | |
2545 | ||
2546 | static | |
2547 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, | |
2548 | int slot_nr) | |
2549 | { | |
2a91f3e5 | 2550 | ide_drive_t *drive = cdi->handle; |
1da177e4 LT |
2551 | int retval; |
2552 | ||
2553 | if (slot_nr == CDSL_CURRENT) { | |
2554 | (void) cdrom_check_status(drive, NULL); | |
2555 | retval = CDROM_STATE_FLAGS(drive)->media_changed; | |
2556 | CDROM_STATE_FLAGS(drive)->media_changed = 0; | |
2557 | return retval; | |
2558 | } else { | |
2559 | return -EINVAL; | |
2560 | } | |
2561 | } | |
2562 | ||
2563 | ||
2564 | static | |
2565 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) | |
2566 | { | |
2567 | return 0; | |
2568 | } | |
2569 | ||
2570 | /* | |
2571 | * Close down the device. Invalidate all cached blocks. | |
2572 | */ | |
2573 | ||
2574 | static | |
2575 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) | |
2576 | { | |
2577 | ide_drive_t *drive = cdi->handle; | |
2578 | ||
2579 | if (!cdi->use_count) | |
2580 | CDROM_STATE_FLAGS(drive)->toc_valid = 0; | |
2581 | } | |
2582 | ||
20e7f7ef BZ |
2583 | #define IDE_CD_CAPABILITIES \ |
2584 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ | |
2585 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ | |
2586 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ | |
2587 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ | |
2588 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) | |
1da177e4 | 2589 | |
1da177e4 LT |
2590 | static struct cdrom_device_ops ide_cdrom_dops = { |
2591 | .open = ide_cdrom_open_real, | |
2592 | .release = ide_cdrom_release_real, | |
2593 | .drive_status = ide_cdrom_drive_status, | |
2594 | .media_changed = ide_cdrom_check_media_change_real, | |
2595 | .tray_move = ide_cdrom_tray_move, | |
2596 | .lock_door = ide_cdrom_lock_door, | |
2597 | .select_speed = ide_cdrom_select_speed, | |
2598 | .get_last_session = ide_cdrom_get_last_session, | |
2599 | .get_mcn = ide_cdrom_get_mcn, | |
2600 | .reset = ide_cdrom_reset, | |
2601 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
20e7f7ef | 2602 | .capability = IDE_CD_CAPABILITIES, |
1da177e4 LT |
2603 | .generic_packet = ide_cdrom_packet, |
2604 | }; | |
2605 | ||
2606 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) | |
2607 | { | |
2608 | struct cdrom_info *info = drive->driver_data; | |
2609 | struct cdrom_device_info *devinfo = &info->devinfo; | |
2610 | ||
2611 | devinfo->ops = &ide_cdrom_dops; | |
2612 | devinfo->mask = 0; | |
2613 | devinfo->speed = CDROM_STATE_FLAGS(drive)->current_speed; | |
2614 | devinfo->capacity = nslots; | |
2a91f3e5 | 2615 | devinfo->handle = drive; |
1da177e4 LT |
2616 | strcpy(devinfo->name, drive->name); |
2617 | ||
2618 | /* set capability mask to match the probe. */ | |
2619 | if (!CDROM_CONFIG_FLAGS(drive)->cd_r) | |
2620 | devinfo->mask |= CDC_CD_R; | |
2621 | if (!CDROM_CONFIG_FLAGS(drive)->cd_rw) | |
2622 | devinfo->mask |= CDC_CD_RW; | |
2623 | if (!CDROM_CONFIG_FLAGS(drive)->dvd) | |
2624 | devinfo->mask |= CDC_DVD; | |
2625 | if (!CDROM_CONFIG_FLAGS(drive)->dvd_r) | |
2626 | devinfo->mask |= CDC_DVD_R; | |
2627 | if (!CDROM_CONFIG_FLAGS(drive)->dvd_ram) | |
2628 | devinfo->mask |= CDC_DVD_RAM; | |
2629 | if (!CDROM_CONFIG_FLAGS(drive)->is_changer) | |
2630 | devinfo->mask |= CDC_SELECT_DISC; | |
2631 | if (!CDROM_CONFIG_FLAGS(drive)->audio_play) | |
2632 | devinfo->mask |= CDC_PLAY_AUDIO; | |
2633 | if (!CDROM_CONFIG_FLAGS(drive)->close_tray) | |
2634 | devinfo->mask |= CDC_CLOSE_TRAY; | |
2635 | if (!CDROM_CONFIG_FLAGS(drive)->mo_drive) | |
2636 | devinfo->mask |= CDC_MO_DRIVE; | |
c0400dc5 AB |
2637 | if (!CDROM_CONFIG_FLAGS(drive)->ram) |
2638 | devinfo->mask |= CDC_RAM; | |
1da177e4 | 2639 | |
3cbd814e BZ |
2640 | if (CDROM_CONFIG_FLAGS(drive)->no_speed_select) |
2641 | devinfo->mask |= CDC_SELECT_SPEED; | |
2642 | ||
1da177e4 LT |
2643 | devinfo->disk = info->disk; |
2644 | return register_cdrom(devinfo); | |
2645 | } | |
2646 | ||
1da177e4 LT |
2647 | static |
2648 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) | |
2649 | { | |
2650 | struct cdrom_info *info = drive->driver_data; | |
2651 | struct cdrom_device_info *cdi = &info->devinfo; | |
2652 | struct atapi_capabilities_page cap; | |
2653 | int nslots = 1; | |
2654 | ||
2655 | if (drive->media == ide_optical) { | |
2656 | CDROM_CONFIG_FLAGS(drive)->mo_drive = 1; | |
2657 | CDROM_CONFIG_FLAGS(drive)->ram = 1; | |
2658 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); | |
2659 | return nslots; | |
2660 | } | |
2661 | ||
2662 | if (CDROM_CONFIG_FLAGS(drive)->nec260 || | |
2663 | !strcmp(drive->id->model,"STINGRAY 8422 IDE 8X CD-ROM 7-27-95")) { | |
2664 | CDROM_CONFIG_FLAGS(drive)->no_eject = 0; | |
2665 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; | |
2666 | return nslots; | |
2667 | } | |
2668 | ||
2669 | /* | |
2670 | * we have to cheat a little here. the packet will eventually | |
2671 | * be queued with ide_cdrom_packet(), which extracts the | |
2672 | * drive from cdi->handle. Since this device hasn't been | |
2673 | * registered with the Uniform layer yet, it can't do this. | |
2674 | * Same goes for cdi->ops. | |
2675 | */ | |
2a91f3e5 | 2676 | cdi->handle = drive; |
1da177e4 LT |
2677 | cdi->ops = &ide_cdrom_dops; |
2678 | ||
2679 | if (ide_cdrom_get_capabilities(drive, &cap)) | |
2680 | return 0; | |
2681 | ||
2682 | if (cap.lock == 0) | |
2683 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; | |
2684 | if (cap.eject) | |
2685 | CDROM_CONFIG_FLAGS(drive)->no_eject = 0; | |
2686 | if (cap.cd_r_write) | |
2687 | CDROM_CONFIG_FLAGS(drive)->cd_r = 1; | |
2688 | if (cap.cd_rw_write) { | |
2689 | CDROM_CONFIG_FLAGS(drive)->cd_rw = 1; | |
2690 | CDROM_CONFIG_FLAGS(drive)->ram = 1; | |
2691 | } | |
1da177e4 LT |
2692 | if (cap.dvd_ram_read || cap.dvd_r_read || cap.dvd_rom) |
2693 | CDROM_CONFIG_FLAGS(drive)->dvd = 1; | |
2694 | if (cap.dvd_ram_write) { | |
2695 | CDROM_CONFIG_FLAGS(drive)->dvd_ram = 1; | |
2696 | CDROM_CONFIG_FLAGS(drive)->ram = 1; | |
2697 | } | |
2698 | if (cap.dvd_r_write) | |
2699 | CDROM_CONFIG_FLAGS(drive)->dvd_r = 1; | |
2700 | if (cap.audio_play) | |
2701 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; | |
2702 | if (cap.mechtype == mechtype_caddy || cap.mechtype == mechtype_popup) | |
2703 | CDROM_CONFIG_FLAGS(drive)->close_tray = 0; | |
2704 | ||
2705 | /* Some drives used by Apple don't advertise audio play | |
2706 | * but they do support reading TOC & audio datas | |
2707 | */ | |
2708 | if (strcmp(drive->id->model, "MATSHITADVD-ROM SR-8187") == 0 || | |
2709 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8186") == 0 || | |
2710 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8176") == 0 || | |
2711 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8174") == 0) | |
2712 | CDROM_CONFIG_FLAGS(drive)->audio_play = 1; | |
2713 | ||
2714 | #if ! STANDARD_ATAPI | |
2715 | if (cdi->sanyo_slot > 0) { | |
2716 | CDROM_CONFIG_FLAGS(drive)->is_changer = 1; | |
2717 | nslots = 3; | |
2718 | } | |
2719 | ||
2720 | else | |
2721 | #endif /* not STANDARD_ATAPI */ | |
2722 | if (cap.mechtype == mechtype_individual_changer || | |
2723 | cap.mechtype == mechtype_cartridge_changer) { | |
2609d06d BZ |
2724 | nslots = cdrom_number_of_slots(cdi); |
2725 | if (nslots > 1) | |
1da177e4 | 2726 | CDROM_CONFIG_FLAGS(drive)->is_changer = 1; |
1da177e4 LT |
2727 | } |
2728 | ||
9235e68b | 2729 | ide_cdrom_update_speed(drive, &cap); |
1da177e4 LT |
2730 | /* don't print speed if the drive reported 0. |
2731 | */ | |
2732 | printk(KERN_INFO "%s: ATAPI", drive->name); | |
2733 | if (CDROM_CONFIG_FLAGS(drive)->max_speed) | |
2734 | printk(" %dX", CDROM_CONFIG_FLAGS(drive)->max_speed); | |
2735 | printk(" %s", CDROM_CONFIG_FLAGS(drive)->dvd ? "DVD-ROM" : "CD-ROM"); | |
2736 | ||
2737 | if (CDROM_CONFIG_FLAGS(drive)->dvd_r|CDROM_CONFIG_FLAGS(drive)->dvd_ram) | |
2738 | printk(" DVD%s%s", | |
2739 | (CDROM_CONFIG_FLAGS(drive)->dvd_r)? "-R" : "", | |
2740 | (CDROM_CONFIG_FLAGS(drive)->dvd_ram)? "-RAM" : ""); | |
2741 | ||
2742 | if (CDROM_CONFIG_FLAGS(drive)->cd_r|CDROM_CONFIG_FLAGS(drive)->cd_rw) | |
2743 | printk(" CD%s%s", | |
2744 | (CDROM_CONFIG_FLAGS(drive)->cd_r)? "-R" : "", | |
2745 | (CDROM_CONFIG_FLAGS(drive)->cd_rw)? "/RW" : ""); | |
2746 | ||
2747 | if (CDROM_CONFIG_FLAGS(drive)->is_changer) | |
2748 | printk(" changer w/%d slots", nslots); | |
2749 | else | |
2750 | printk(" drive"); | |
2751 | ||
3ab7efe8 | 2752 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(cap.buffer_size)); |
1da177e4 LT |
2753 | |
2754 | return nslots; | |
2755 | } | |
2756 | ||
7662d046 | 2757 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2758 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
2759 | { | |
1497943e | 2760 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
1da177e4 | 2761 | } |
7662d046 BZ |
2762 | #else |
2763 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } | |
2764 | #endif | |
1da177e4 LT |
2765 | |
2766 | /* | |
2767 | * standard prep_rq_fn that builds 10 byte cmds | |
2768 | */ | |
165125e1 | 2769 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
2770 | { |
2771 | int hard_sect = queue_hardsect_size(q); | |
2772 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
2773 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
2774 | ||
2775 | memset(rq->cmd, 0, sizeof(rq->cmd)); | |
2776 | ||
2777 | if (rq_data_dir(rq) == READ) | |
2778 | rq->cmd[0] = GPCMD_READ_10; | |
2779 | else | |
2780 | rq->cmd[0] = GPCMD_WRITE_10; | |
2781 | ||
2782 | /* | |
2783 | * fill in lba | |
2784 | */ | |
2785 | rq->cmd[2] = (block >> 24) & 0xff; | |
2786 | rq->cmd[3] = (block >> 16) & 0xff; | |
2787 | rq->cmd[4] = (block >> 8) & 0xff; | |
2788 | rq->cmd[5] = block & 0xff; | |
2789 | ||
2790 | /* | |
2791 | * and transfer length | |
2792 | */ | |
2793 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
2794 | rq->cmd[8] = blocks & 0xff; | |
2795 | rq->cmd_len = 10; | |
2796 | return BLKPREP_OK; | |
2797 | } | |
2798 | ||
2799 | /* | |
2800 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
2801 | * This transform handles the few exceptions. | |
2802 | */ | |
2803 | static int ide_cdrom_prep_pc(struct request *rq) | |
2804 | { | |
2805 | u8 *c = rq->cmd; | |
2806 | ||
2807 | /* | |
2808 | * Transform 6-byte read/write commands to the 10-byte version | |
2809 | */ | |
2810 | if (c[0] == READ_6 || c[0] == WRITE_6) { | |
2811 | c[8] = c[4]; | |
2812 | c[5] = c[3]; | |
2813 | c[4] = c[2]; | |
2814 | c[3] = c[1] & 0x1f; | |
2815 | c[2] = 0; | |
2816 | c[1] &= 0xe0; | |
2817 | c[0] += (READ_10 - READ_6); | |
2818 | rq->cmd_len = 10; | |
2819 | return BLKPREP_OK; | |
2820 | } | |
2821 | ||
2822 | /* | |
2823 | * it's silly to pretend we understand 6-byte sense commands, just | |
2824 | * reject with ILLEGAL_REQUEST and the caller should take the | |
2825 | * appropriate action | |
2826 | */ | |
2827 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
2828 | rq->errors = ILLEGAL_REQUEST; | |
2829 | return BLKPREP_KILL; | |
2830 | } | |
2831 | ||
2832 | return BLKPREP_OK; | |
2833 | } | |
2834 | ||
165125e1 | 2835 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 2836 | { |
4aff5e23 | 2837 | if (blk_fs_request(rq)) |
1da177e4 | 2838 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 2839 | else if (blk_pc_request(rq)) |
1da177e4 LT |
2840 | return ide_cdrom_prep_pc(rq); |
2841 | ||
2842 | return 0; | |
2843 | } | |
2844 | ||
2845 | static | |
2846 | int ide_cdrom_setup (ide_drive_t *drive) | |
2847 | { | |
2848 | struct cdrom_info *info = drive->driver_data; | |
2849 | struct cdrom_device_info *cdi = &info->devinfo; | |
2850 | int nslots; | |
2851 | ||
2852 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); | |
2853 | blk_queue_dma_alignment(drive->queue, 31); | |
2854 | drive->queue->unplug_delay = (1 * HZ) / 1000; | |
2855 | if (!drive->queue->unplug_delay) | |
2856 | drive->queue->unplug_delay = 1; | |
2857 | ||
2858 | drive->special.all = 0; | |
2859 | ||
2860 | CDROM_STATE_FLAGS(drive)->media_changed = 1; | |
1da177e4 LT |
2861 | |
2862 | #if NO_DOOR_LOCKING | |
2863 | CDROM_CONFIG_FLAGS(drive)->no_doorlock = 1; | |
1da177e4 | 2864 | #endif |
b8d25dee BZ |
2865 | if ((drive->id->config & 0x0060) == 0x20) |
2866 | CDROM_CONFIG_FLAGS(drive)->drq_interrupt = 1; | |
1da177e4 | 2867 | CDROM_CONFIG_FLAGS(drive)->no_eject = 1; |
1da177e4 | 2868 | CDROM_CONFIG_FLAGS(drive)->close_tray = 1; |
b8d25dee | 2869 | |
1da177e4 | 2870 | /* limit transfer size per interrupt. */ |
1da177e4 LT |
2871 | /* a testament to the nice quality of Samsung drives... */ |
2872 | if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2430")) | |
2873 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; | |
2874 | else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2432")) | |
2875 | CDROM_CONFIG_FLAGS(drive)->limit_nframes = 1; | |
2876 | /* the 3231 model does not support the SET_CD_SPEED command */ | |
2877 | else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-3231")) | |
3cbd814e | 2878 | CDROM_CONFIG_FLAGS(drive)->no_speed_select = 1; |
1da177e4 LT |
2879 | |
2880 | #if ! STANDARD_ATAPI | |
1da177e4 LT |
2881 | if (strcmp (drive->id->model, "V003S0DS") == 0 && |
2882 | drive->id->fw_rev[4] == '1' && | |
2883 | drive->id->fw_rev[6] <= '2') { | |
2884 | /* Vertos 300. | |
2885 | Some versions of this drive like to talk BCD. */ | |
2886 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1; | |
2887 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1; | |
1da177e4 | 2888 | } |
1da177e4 LT |
2889 | else if (strcmp (drive->id->model, "V006E0DS") == 0 && |
2890 | drive->id->fw_rev[4] == '1' && | |
2891 | drive->id->fw_rev[6] <= '2') { | |
2892 | /* Vertos 600 ESD. */ | |
2893 | CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd = 1; | |
2894 | } | |
2895 | else if (strcmp(drive->id->model, "NEC CD-ROM DRIVE:260") == 0 && | |
2896 | strncmp(drive->id->fw_rev, "1.01", 4) == 0) { /* FIXME */ | |
2897 | /* Old NEC260 (not R). | |
2898 | This drive was released before the 1.2 version | |
2899 | of the spec. */ | |
2900 | CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd = 1; | |
1da177e4 LT |
2901 | CDROM_CONFIG_FLAGS(drive)->nec260 = 1; |
2902 | } | |
b8d25dee BZ |
2903 | /* |
2904 | * Sanyo 3 CD changer uses a non-standard command for CD changing | |
2905 | * (by default standard ATAPI support for CD changers is used). | |
2906 | */ | |
1da177e4 LT |
2907 | else if ((strcmp(drive->id->model, "CD-ROM CDR-C3 G") == 0) || |
2908 | (strcmp(drive->id->model, "CD-ROM CDR-C3G") == 0) || | |
2909 | (strcmp(drive->id->model, "CD-ROM CDR_C36") == 0)) { | |
2910 | /* uses CD in slot 0 when value is set to 3 */ | |
2911 | cdi->sanyo_slot = 3; | |
2912 | } | |
2913 | #endif /* not STANDARD_ATAPI */ | |
2914 | ||
1da177e4 LT |
2915 | nslots = ide_cdrom_probe_capabilities (drive); |
2916 | ||
2917 | /* | |
2918 | * set correct block size | |
2919 | */ | |
2920 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); | |
2921 | ||
2922 | if (drive->autotune == IDE_TUNE_DEFAULT || | |
2923 | drive->autotune == IDE_TUNE_AUTO) | |
2924 | drive->dsc_overlap = (drive->next != drive); | |
1da177e4 LT |
2925 | |
2926 | if (ide_cdrom_register(drive, nslots)) { | |
2927 | printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); | |
2928 | info->devinfo.handle = NULL; | |
2929 | return 1; | |
2930 | } | |
2931 | ide_cdrom_add_settings(drive); | |
2932 | return 0; | |
2933 | } | |
2934 | ||
ecfd80e4 | 2935 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2936 | static |
2937 | sector_t ide_cdrom_capacity (ide_drive_t *drive) | |
2938 | { | |
2939 | unsigned long capacity, sectors_per_frame; | |
2940 | ||
2941 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
2942 | return 0; | |
2943 | ||
2944 | return capacity * sectors_per_frame; | |
2945 | } | |
d97b3214 | 2946 | #endif |
1da177e4 | 2947 | |
4031bbe4 | 2948 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
2949 | { |
2950 | struct cdrom_info *info = drive->driver_data; | |
2951 | ||
7662d046 | 2952 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
2953 | |
2954 | del_gendisk(info->disk); | |
2955 | ||
2956 | ide_cd_put(info); | |
1da177e4 LT |
2957 | } |
2958 | ||
2959 | static void ide_cd_release(struct kref *kref) | |
2960 | { | |
2961 | struct cdrom_info *info = to_ide_cd(kref); | |
2962 | struct cdrom_device_info *devinfo = &info->devinfo; | |
2963 | ide_drive_t *drive = info->drive; | |
2964 | struct gendisk *g = info->disk; | |
2965 | ||
6044ec88 JJ |
2966 | kfree(info->buffer); |
2967 | kfree(info->toc); | |
1da177e4 LT |
2968 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
2969 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " | |
2970 | "driver.\n", __FUNCTION__, drive->name); | |
2971 | drive->dsc_overlap = 0; | |
2972 | drive->driver_data = NULL; | |
2973 | blk_queue_prep_rq(drive->queue, NULL); | |
2974 | g->private_data = NULL; | |
2975 | put_disk(g); | |
2976 | kfree(info); | |
2977 | } | |
2978 | ||
4031bbe4 | 2979 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 2980 | |
ecfd80e4 | 2981 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 LT |
2982 | static int proc_idecd_read_capacity |
2983 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
2984 | { | |
2a91f3e5 | 2985 | ide_drive_t *drive = data; |
1da177e4 LT |
2986 | int len; |
2987 | ||
2988 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); | |
2989 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
2990 | } | |
2991 | ||
2992 | static ide_proc_entry_t idecd_proc[] = { | |
2993 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
2994 | { NULL, 0, NULL, NULL } | |
2995 | }; | |
1da177e4 LT |
2996 | #endif |
2997 | ||
2998 | static ide_driver_t ide_cdrom_driver = { | |
8604affd | 2999 | .gen_driver = { |
4ef3b8f4 | 3000 | .owner = THIS_MODULE, |
8604affd BZ |
3001 | .name = "ide-cdrom", |
3002 | .bus = &ide_bus_type, | |
8604affd | 3003 | }, |
4031bbe4 RK |
3004 | .probe = ide_cd_probe, |
3005 | .remove = ide_cd_remove, | |
1da177e4 LT |
3006 | .version = IDECD_VERSION, |
3007 | .media = ide_cdrom, | |
1da177e4 | 3008 | .supports_dsc_overlap = 1, |
1da177e4 LT |
3009 | .do_request = ide_do_rw_cdrom, |
3010 | .end_request = ide_end_request, | |
3011 | .error = __ide_error, | |
3012 | .abort = __ide_abort, | |
7662d046 | 3013 | #ifdef CONFIG_IDE_PROC_FS |
1da177e4 | 3014 | .proc = idecd_proc, |
7662d046 | 3015 | #endif |
1da177e4 LT |
3016 | }; |
3017 | ||
3018 | static int idecd_open(struct inode * inode, struct file * file) | |
3019 | { | |
3020 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
3021 | struct cdrom_info *info; | |
1da177e4 LT |
3022 | int rc = -ENOMEM; |
3023 | ||
3024 | if (!(info = ide_cd_get(disk))) | |
3025 | return -ENXIO; | |
3026 | ||
1da177e4 | 3027 | if (!info->buffer) |
c94964a4 BZ |
3028 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); |
3029 | ||
3030 | if (info->buffer) | |
3031 | rc = cdrom_open(&info->devinfo, inode, file); | |
1da177e4 LT |
3032 | |
3033 | if (rc < 0) | |
3034 | ide_cd_put(info); | |
3035 | ||
3036 | return rc; | |
3037 | } | |
3038 | ||
3039 | static int idecd_release(struct inode * inode, struct file * file) | |
3040 | { | |
3041 | struct gendisk *disk = inode->i_bdev->bd_disk; | |
3042 | struct cdrom_info *info = ide_cd_g(disk); | |
1da177e4 LT |
3043 | |
3044 | cdrom_release (&info->devinfo, file); | |
1da177e4 LT |
3045 | |
3046 | ide_cd_put(info); | |
3047 | ||
3048 | return 0; | |
3049 | } | |
3050 | ||
6a2900b6 CH |
3051 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
3052 | { | |
3053 | struct packet_command cgc; | |
3054 | char buffer[16]; | |
3055 | int stat; | |
3056 | char spindown; | |
3057 | ||
3058 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
3059 | return -EFAULT; | |
3060 | ||
3061 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
3062 | ||
3063 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
3064 | if (stat) | |
3065 | return stat; | |
3066 | ||
3067 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
3068 | return cdrom_mode_select(cdi, &cgc); | |
3069 | } | |
3070 | ||
3071 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
3072 | { | |
3073 | struct packet_command cgc; | |
3074 | char buffer[16]; | |
3075 | int stat; | |
3076 | char spindown; | |
3077 | ||
3078 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
3079 | ||
3080 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
3081 | if (stat) | |
3082 | return stat; | |
3083 | ||
3084 | spindown = buffer[11] & 0x0f; | |
3085 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) | |
3086 | return -EFAULT; | |
3087 | return 0; | |
3088 | } | |
3089 | ||
1da177e4 LT |
3090 | static int idecd_ioctl (struct inode *inode, struct file *file, |
3091 | unsigned int cmd, unsigned long arg) | |
3092 | { | |
3093 | struct block_device *bdev = inode->i_bdev; | |
3094 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); | |
3095 | int err; | |
3096 | ||
6a2900b6 CH |
3097 | switch (cmd) { |
3098 | case CDROMSETSPINDOWN: | |
3099 | return idecd_set_spindown(&info->devinfo, arg); | |
3100 | case CDROMGETSPINDOWN: | |
3101 | return idecd_get_spindown(&info->devinfo, arg); | |
3102 | default: | |
3103 | break; | |
3104 | } | |
3105 | ||
3106 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); | |
1da177e4 LT |
3107 | if (err == -EINVAL) |
3108 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); | |
3109 | ||
3110 | return err; | |
3111 | } | |
3112 | ||
3113 | static int idecd_media_changed(struct gendisk *disk) | |
3114 | { | |
3115 | struct cdrom_info *info = ide_cd_g(disk); | |
3116 | return cdrom_media_changed(&info->devinfo); | |
3117 | } | |
3118 | ||
3119 | static int idecd_revalidate_disk(struct gendisk *disk) | |
3120 | { | |
3121 | struct cdrom_info *info = ide_cd_g(disk); | |
3122 | struct request_sense sense; | |
3123 | cdrom_read_toc(info->drive, &sense); | |
3124 | return 0; | |
3125 | } | |
3126 | ||
3127 | static struct block_device_operations idecd_ops = { | |
3128 | .owner = THIS_MODULE, | |
3129 | .open = idecd_open, | |
3130 | .release = idecd_release, | |
3131 | .ioctl = idecd_ioctl, | |
3132 | .media_changed = idecd_media_changed, | |
3133 | .revalidate_disk= idecd_revalidate_disk | |
3134 | }; | |
3135 | ||
3136 | /* options */ | |
3137 | static char *ignore = NULL; | |
3138 | ||
3139 | module_param(ignore, charp, 0400); | |
3140 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); | |
3141 | ||
4031bbe4 | 3142 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
3143 | { |
3144 | struct cdrom_info *info; | |
3145 | struct gendisk *g; | |
3146 | struct request_sense sense; | |
3147 | ||
3148 | if (!strstr("ide-cdrom", drive->driver_req)) | |
3149 | goto failed; | |
3150 | if (!drive->present) | |
3151 | goto failed; | |
3152 | if (drive->media != ide_cdrom && drive->media != ide_optical) | |
3153 | goto failed; | |
3154 | /* skip drives that we were told to ignore */ | |
3155 | if (ignore != NULL) { | |
3156 | if (strstr(ignore, drive->name)) { | |
3157 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); | |
3158 | goto failed; | |
3159 | } | |
3160 | } | |
3161 | if (drive->scsi) { | |
3162 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); | |
3163 | goto failed; | |
3164 | } | |
f5e3c2fa | 3165 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 LT |
3166 | if (info == NULL) { |
3167 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); | |
3168 | goto failed; | |
3169 | } | |
3170 | ||
3171 | g = alloc_disk(1 << PARTN_BITS); | |
3172 | if (!g) | |
3173 | goto out_free_cd; | |
3174 | ||
3175 | ide_init_disk(g, drive); | |
3176 | ||
7662d046 | 3177 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
8604affd | 3178 | |
1da177e4 LT |
3179 | kref_init(&info->kref); |
3180 | ||
3181 | info->drive = drive; | |
3182 | info->driver = &ide_cdrom_driver; | |
3183 | info->disk = g; | |
3184 | ||
3185 | g->private_data = &info->driver; | |
3186 | ||
3187 | drive->driver_data = info; | |
3188 | ||
1da177e4 | 3189 | g->minors = 1; |
1da177e4 LT |
3190 | g->driverfs_dev = &drive->gendev; |
3191 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
3192 | if (ide_cdrom_setup(drive)) { | |
7662d046 | 3193 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
05017db3 | 3194 | ide_cd_release(&info->kref); |
1da177e4 LT |
3195 | goto failed; |
3196 | } | |
1da177e4 LT |
3197 | |
3198 | cdrom_read_toc(drive, &sense); | |
3199 | g->fops = &idecd_ops; | |
3200 | g->flags |= GENHD_FL_REMOVABLE; | |
3201 | add_disk(g); | |
3202 | return 0; | |
3203 | ||
1da177e4 LT |
3204 | out_free_cd: |
3205 | kfree(info); | |
3206 | failed: | |
8604affd | 3207 | return -ENODEV; |
1da177e4 LT |
3208 | } |
3209 | ||
3210 | static void __exit ide_cdrom_exit(void) | |
3211 | { | |
8604affd | 3212 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 3213 | } |
17514e8a BZ |
3214 | |
3215 | static int __init ide_cdrom_init(void) | |
1da177e4 | 3216 | { |
8604affd | 3217 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
3218 | } |
3219 | ||
263756ec | 3220 | MODULE_ALIAS("ide:*m-cdrom*"); |
1da177e4 LT |
3221 | module_init(ide_cdrom_init); |
3222 | module_exit(ide_cdrom_exit); | |
3223 | MODULE_LICENSE("GPL"); |