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Commit | Line | Data |
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1da177e4 | 1 | /* |
3bb4663b | 2 | * ATAPI CD-ROM driver. |
1da177e4 | 3 | * |
59bca8cc BZ |
4 | * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov> |
5 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> | |
6 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> | |
7 | * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz | |
1da177e4 LT |
8 | * |
9 | * May be copied or modified under the terms of the GNU General Public | |
10 | * License. See linux/COPYING for more information. | |
11 | * | |
1da177e4 LT |
12 | * See Documentation/cdrom/ide-cd for usage information. |
13 | * | |
14 | * Suggestions are welcome. Patches that work are more welcome though. ;-) | |
15 | * For those wishing to work on this driver, please be sure you download | |
9ce70fb2 PC |
16 | * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI |
17 | * (SFF-8020i rev 2.6) standards. These documents can be obtained by | |
1da177e4 LT |
18 | * anonymous ftp from: |
19 | * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps | |
20 | * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf | |
21 | * | |
03553353 BZ |
22 | * For historical changelog please see: |
23 | * Documentation/ide/ChangeLog.ide-cd.1994-2004 | |
24 | */ | |
25 | ||
fc8323f7 BP |
26 | #define DRV_NAME "ide-cd" |
27 | #define PFX DRV_NAME ": " | |
28 | ||
3bb4663b | 29 | #define IDECD_VERSION "5.00" |
1da177e4 | 30 | |
1da177e4 LT |
31 | #include <linux/module.h> |
32 | #include <linux/types.h> | |
33 | #include <linux/kernel.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/interrupt.h> | |
38 | #include <linux/errno.h> | |
39 | #include <linux/cdrom.h> | |
40 | #include <linux/ide.h> | |
41 | #include <linux/completion.h> | |
cf8b8975 | 42 | #include <linux/mutex.h> |
9a6dc668 | 43 | #include <linux/bcd.h> |
1da177e4 | 44 | |
5a3ea3b4 BP |
45 | /* For SCSI -> ATAPI command conversion */ |
46 | #include <scsi/scsi.h> | |
1da177e4 | 47 | |
9aba468e BP |
48 | #include <linux/irq.h> |
49 | #include <linux/io.h> | |
1da177e4 | 50 | #include <asm/byteorder.h> |
9aba468e | 51 | #include <linux/uaccess.h> |
1da177e4 LT |
52 | #include <asm/unaligned.h> |
53 | ||
54 | #include "ide-cd.h" | |
55 | ||
fc8323f7 BP |
56 | #define IDECD_DEBUG_LOG 1 |
57 | ||
58 | #if IDECD_DEBUG_LOG | |
59 | #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, args) | |
60 | #else | |
61 | #define ide_debug_log(lvl, fmt, args...) do {} while (0) | |
62 | #endif | |
63 | ||
cf8b8975 | 64 | static DEFINE_MUTEX(idecd_ref_mutex); |
1da177e4 | 65 | |
08da591e BZ |
66 | static void ide_cd_release(struct kref *); |
67 | ||
1da177e4 LT |
68 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) |
69 | { | |
70 | struct cdrom_info *cd = NULL; | |
71 | ||
cf8b8975 | 72 | mutex_lock(&idecd_ref_mutex); |
5aeddf90 | 73 | cd = ide_drv_g(disk, cdrom_info); |
08da591e | 74 | if (cd) { |
d3e33ff5 | 75 | if (ide_device_get(cd->drive)) |
08da591e | 76 | cd = NULL; |
d3e33ff5 BZ |
77 | else |
78 | kref_get(&cd->kref); | |
79 | ||
08da591e | 80 | } |
cf8b8975 | 81 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
82 | return cd; |
83 | } | |
84 | ||
1da177e4 LT |
85 | static void ide_cd_put(struct cdrom_info *cd) |
86 | { | |
d3e33ff5 BZ |
87 | ide_drive_t *drive = cd->drive; |
88 | ||
cf8b8975 | 89 | mutex_lock(&idecd_ref_mutex); |
1da177e4 | 90 | kref_put(&cd->kref, ide_cd_release); |
d3e33ff5 | 91 | ide_device_put(drive); |
cf8b8975 | 92 | mutex_unlock(&idecd_ref_mutex); |
1da177e4 LT |
93 | } |
94 | ||
5a3ea3b4 | 95 | /* |
1da177e4 LT |
96 | * Generic packet command support and error handling routines. |
97 | */ | |
98 | ||
5a3ea3b4 | 99 | /* Mark that we've seen a media change and invalidate our internal buffers. */ |
9ce70fb2 | 100 | static void cdrom_saw_media_change(ide_drive_t *drive) |
1da177e4 | 101 | { |
fe11edfa | 102 | drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED; |
570f89ea | 103 | drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID; |
1da177e4 LT |
104 | } |
105 | ||
106 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, | |
107 | struct request_sense *sense) | |
108 | { | |
109 | int log = 0; | |
110 | ||
fc8323f7 BP |
111 | ide_debug_log(IDE_DBG_SENSE, "Call %s, sense_key: 0x%x\n", __func__, |
112 | sense->sense_key); | |
113 | ||
4aff5e23 | 114 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
1da177e4 LT |
115 | return 0; |
116 | ||
117 | switch (sense->sense_key) { | |
9ce70fb2 PC |
118 | case NO_SENSE: |
119 | case RECOVERED_ERROR: | |
120 | break; | |
121 | case NOT_READY: | |
122 | /* | |
5a3ea3b4 BP |
123 | * don't care about tray state messages for e.g. capacity |
124 | * commands or in-progress or becoming ready | |
9ce70fb2 PC |
125 | */ |
126 | if (sense->asc == 0x3a || sense->asc == 0x04) | |
1da177e4 | 127 | break; |
9ce70fb2 PC |
128 | log = 1; |
129 | break; | |
130 | case ILLEGAL_REQUEST: | |
131 | /* | |
5a3ea3b4 BP |
132 | * don't log START_STOP unit with LoEj set, since we cannot |
133 | * reliably check if drive can auto-close | |
9ce70fb2 PC |
134 | */ |
135 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) | |
1da177e4 | 136 | break; |
9ce70fb2 PC |
137 | log = 1; |
138 | break; | |
139 | case UNIT_ATTENTION: | |
140 | /* | |
5a3ea3b4 BP |
141 | * Make good and sure we've seen this potential media change. |
142 | * Some drives (i.e. Creative) fail to present the correct sense | |
143 | * key in the error register. | |
9ce70fb2 PC |
144 | */ |
145 | cdrom_saw_media_change(drive); | |
146 | break; | |
147 | default: | |
148 | log = 1; | |
149 | break; | |
1da177e4 LT |
150 | } |
151 | return log; | |
152 | } | |
153 | ||
e5e076a3 | 154 | static void cdrom_analyze_sense_data(ide_drive_t *drive, |
1da177e4 LT |
155 | struct request *failed_command, |
156 | struct request_sense *sense) | |
157 | { | |
dbe217af AC |
158 | unsigned long sector; |
159 | unsigned long bio_sectors; | |
dbe217af AC |
160 | struct cdrom_info *info = drive->driver_data; |
161 | ||
fc8323f7 BP |
162 | ide_debug_log(IDE_DBG_SENSE, "Call %s, error_code: 0x%x, " |
163 | "sense_key: 0x%x\n", __func__, sense->error_code, | |
164 | sense->sense_key); | |
165 | ||
166 | if (failed_command) | |
167 | ide_debug_log(IDE_DBG_SENSE, "%s: failed cmd: 0x%x\n", | |
168 | __func__, failed_command->cmd[0]); | |
169 | ||
1da177e4 LT |
170 | if (!cdrom_log_sense(drive, failed_command, sense)) |
171 | return; | |
172 | ||
173 | /* | |
5a3ea3b4 BP |
174 | * If a read toc is executed for a CD-R or CD-RW medium where the first |
175 | * toc has not been recorded yet, it will fail with 05/24/00 (which is a | |
176 | * confusing error) | |
1da177e4 LT |
177 | */ |
178 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) | |
179 | if (sense->sense_key == 0x05 && sense->asc == 0x24) | |
180 | return; | |
181 | ||
5a3ea3b4 BP |
182 | /* current error */ |
183 | if (sense->error_code == 0x70) { | |
9ce70fb2 | 184 | switch (sense->sense_key) { |
dbe217af AC |
185 | case MEDIUM_ERROR: |
186 | case VOLUME_OVERFLOW: | |
187 | case ILLEGAL_REQUEST: | |
188 | if (!sense->valid) | |
189 | break; | |
190 | if (failed_command == NULL || | |
191 | !blk_fs_request(failed_command)) | |
192 | break; | |
193 | sector = (sense->information[0] << 24) | | |
194 | (sense->information[1] << 16) | | |
195 | (sense->information[2] << 8) | | |
196 | (sense->information[3]); | |
197 | ||
dbe217af | 198 | if (drive->queue->hardsect_size == 2048) |
5a3ea3b4 BP |
199 | /* device sector size is 2K */ |
200 | sector <<= 2; | |
eee49298 RK |
201 | |
202 | bio_sectors = max(bio_sectors(failed_command->bio), 4U); | |
9ce70fb2 | 203 | sector &= ~(bio_sectors - 1); |
dbe217af | 204 | |
dbe217af | 205 | if (sector < get_capacity(info->disk) && |
e5e076a3 | 206 | drive->probed_capacity - sector < 4 * 75) |
dbe217af | 207 | set_capacity(info->disk, sector); |
9ce70fb2 PC |
208 | } |
209 | } | |
1da177e4 | 210 | |
972560fb | 211 | ide_cd_log_error(drive->name, failed_command, sense); |
1da177e4 LT |
212 | } |
213 | ||
1da177e4 LT |
214 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, |
215 | struct request *failed_command) | |
216 | { | |
217 | struct cdrom_info *info = drive->driver_data; | |
218 | struct request *rq = &info->request_sense_request; | |
219 | ||
fc8323f7 BP |
220 | ide_debug_log(IDE_DBG_SENSE, "Call %s\n", __func__); |
221 | ||
1da177e4 LT |
222 | if (sense == NULL) |
223 | sense = &info->sense_data; | |
224 | ||
225 | /* stuff the sense request in front of our current request */ | |
ed820f19 FT |
226 | blk_rq_init(NULL, rq); |
227 | rq->cmd_type = REQ_TYPE_ATA_PC; | |
228 | rq->rq_disk = info->disk; | |
1da177e4 LT |
229 | |
230 | rq->data = sense; | |
231 | rq->cmd[0] = GPCMD_REQUEST_SENSE; | |
e5e076a3 BP |
232 | rq->cmd[4] = 18; |
233 | rq->data_len = 18; | |
1da177e4 | 234 | |
4aff5e23 | 235 | rq->cmd_type = REQ_TYPE_SENSE; |
e8a96aa7 | 236 | rq->cmd_flags |= REQ_PREEMPT; |
1da177e4 LT |
237 | |
238 | /* NOTE! Save the failed command in "rq->buffer" */ | |
239 | rq->buffer = (void *) failed_command; | |
240 | ||
fc8323f7 BP |
241 | if (failed_command) |
242 | ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x\n", | |
243 | failed_command->cmd[0]); | |
244 | ||
63f5abb0 | 245 | ide_do_drive_cmd(drive, rq); |
1da177e4 LT |
246 | } |
247 | ||
9ce70fb2 | 248 | static void cdrom_end_request(ide_drive_t *drive, int uptodate) |
1da177e4 LT |
249 | { |
250 | struct request *rq = HWGROUP(drive)->rq; | |
251 | int nsectors = rq->hard_cur_sectors; | |
252 | ||
fc8323f7 BP |
253 | ide_debug_log(IDE_DBG_FUNC, "Call %s, cmd: 0x%x, uptodate: 0x%x, " |
254 | "nsectors: %d\n", __func__, rq->cmd[0], uptodate, | |
255 | nsectors); | |
256 | ||
4aff5e23 | 257 | if (blk_sense_request(rq) && uptodate) { |
1da177e4 | 258 | /* |
4aff5e23 JA |
259 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
260 | * failed request | |
1da177e4 LT |
261 | */ |
262 | struct request *failed = (struct request *) rq->buffer; | |
263 | struct cdrom_info *info = drive->driver_data; | |
264 | void *sense = &info->sense_data; | |
1da177e4 LT |
265 | |
266 | if (failed) { | |
267 | if (failed->sense) { | |
268 | sense = failed->sense; | |
269 | failed->sense_len = rq->sense_len; | |
270 | } | |
dbe217af | 271 | cdrom_analyze_sense_data(drive, failed, sense); |
1da177e4 | 272 | /* |
5a3ea3b4 | 273 | * now end the failed request |
1da177e4 | 274 | */ |
dbe217af AC |
275 | if (blk_fs_request(failed)) { |
276 | if (ide_end_dequeued_request(drive, failed, 0, | |
277 | failed->hard_nr_sectors)) | |
278 | BUG(); | |
279 | } else { | |
3c8a2cce BZ |
280 | if (blk_end_request(failed, -EIO, |
281 | failed->data_len)) | |
5e36bb6e | 282 | BUG(); |
dbe217af AC |
283 | } |
284 | } else | |
285 | cdrom_analyze_sense_data(drive, NULL, sense); | |
1da177e4 LT |
286 | } |
287 | ||
288 | if (!rq->current_nr_sectors && blk_fs_request(rq)) | |
289 | uptodate = 1; | |
290 | /* make sure it's fully ended */ | |
291 | if (blk_pc_request(rq)) | |
292 | nsectors = (rq->data_len + 511) >> 9; | |
293 | if (!nsectors) | |
294 | nsectors = 1; | |
295 | ||
fc8323f7 BP |
296 | ide_debug_log(IDE_DBG_FUNC, "Exit %s, uptodate: 0x%x, nsectors: %d\n", |
297 | __func__, uptodate, nsectors); | |
298 | ||
1da177e4 LT |
299 | ide_end_request(drive, uptodate, nsectors); |
300 | } | |
301 | ||
83c8565d | 302 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st) |
dbe217af | 303 | { |
83c8565d | 304 | if (st & 0x80) |
dbe217af | 305 | return; |
83c8565d | 306 | ide_dump_status(drive, msg, st); |
dbe217af AC |
307 | } |
308 | ||
5a3ea3b4 BP |
309 | /* |
310 | * Returns: | |
311 | * 0: if the request should be continued. | |
312 | * 1: if the request was ended. | |
313 | */ | |
1da177e4 LT |
314 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) |
315 | { | |
b73c7ee2 | 316 | ide_hwif_t *hwif = drive->hwif; |
1d0bf587 BZ |
317 | ide_hwgroup_t *hwgroup = hwif->hwgroup; |
318 | struct request *rq = hwgroup->rq; | |
1da177e4 | 319 | int stat, err, sense_key; |
9ce70fb2 | 320 | |
5a3ea3b4 | 321 | /* check for errors */ |
374e042c | 322 | stat = hwif->tp_ops->read_status(hwif); |
c47137a9 | 323 | |
1da177e4 LT |
324 | if (stat_ret) |
325 | *stat_ret = stat; | |
326 | ||
327 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) | |
328 | return 0; | |
329 | ||
5a3ea3b4 | 330 | /* get the IDE error register */ |
64a57fe4 | 331 | err = ide_read_error(drive); |
1da177e4 LT |
332 | sense_key = err >> 4; |
333 | ||
334 | if (rq == NULL) { | |
fc8323f7 | 335 | printk(KERN_ERR PFX "%s: missing rq in %s\n", |
e5e076a3 | 336 | drive->name, __func__); |
1da177e4 LT |
337 | return 1; |
338 | } | |
339 | ||
fc8323f7 | 340 | ide_debug_log(IDE_DBG_RQ, "%s: stat: 0x%x, good_stat: 0x%x, " |
71b429ca BP |
341 | "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x, err: 0x%x\n", |
342 | __func__, stat, good_stat, rq->cmd[0], rq->cmd_type, err); | |
fc8323f7 | 343 | |
4aff5e23 | 344 | if (blk_sense_request(rq)) { |
5a3ea3b4 BP |
345 | /* |
346 | * We got an error trying to get sense info from the drive | |
347 | * (probably while trying to recover from a former error). | |
348 | * Just give up. | |
349 | */ | |
4aff5e23 | 350 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
351 | cdrom_end_request(drive, 0); |
352 | ide_error(drive, "request sense failure", stat); | |
353 | return 1; | |
354 | ||
8770c018 | 355 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
1da177e4 | 356 | /* All other functions, except for READ. */ |
1da177e4 LT |
357 | |
358 | /* | |
359 | * if we have an error, pass back CHECK_CONDITION as the | |
360 | * scsi status byte | |
361 | */ | |
b7156731 | 362 | if (blk_pc_request(rq) && !rq->errors) |
1da177e4 LT |
363 | rq->errors = SAM_STAT_CHECK_CONDITION; |
364 | ||
5a3ea3b4 | 365 | /* check for tray open */ |
1da177e4 | 366 | if (sense_key == NOT_READY) { |
9ce70fb2 | 367 | cdrom_saw_media_change(drive); |
1da177e4 | 368 | } else if (sense_key == UNIT_ATTENTION) { |
5a3ea3b4 | 369 | /* check for media change */ |
9ce70fb2 | 370 | cdrom_saw_media_change(drive); |
1da177e4 | 371 | return 0; |
9ce70fb2 PC |
372 | } else if (sense_key == ILLEGAL_REQUEST && |
373 | rq->cmd[0] == GPCMD_START_STOP_UNIT) { | |
374 | /* | |
375 | * Don't print error message for this condition-- | |
376 | * SFF8090i indicates that 5/24/00 is the correct | |
377 | * response to a request to close the tray if the | |
378 | * drive doesn't have that capability. | |
379 | * cdrom_log_sense() knows this! | |
380 | */ | |
4aff5e23 | 381 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
5a3ea3b4 | 382 | /* otherwise, print an error */ |
1da177e4 LT |
383 | ide_dump_status(drive, "packet command error", stat); |
384 | } | |
9ce70fb2 | 385 | |
4aff5e23 | 386 | rq->cmd_flags |= REQ_FAILED; |
1da177e4 LT |
387 | |
388 | /* | |
389 | * instead of playing games with moving completions around, | |
390 | * remove failed request completely and end it when the | |
391 | * request sense has completed | |
392 | */ | |
bbb89e3d | 393 | goto end_request; |
1da177e4 LT |
394 | |
395 | } else if (blk_fs_request(rq)) { | |
396 | int do_end_request = 0; | |
397 | ||
5a3ea3b4 | 398 | /* handle errors from READ and WRITE requests */ |
1da177e4 LT |
399 | |
400 | if (blk_noretry_request(rq)) | |
401 | do_end_request = 1; | |
402 | ||
403 | if (sense_key == NOT_READY) { | |
5a3ea3b4 | 404 | /* tray open */ |
1da177e4 | 405 | if (rq_data_dir(rq) == READ) { |
9ce70fb2 | 406 | cdrom_saw_media_change(drive); |
1da177e4 | 407 | |
5a3ea3b4 | 408 | /* fail the request */ |
fc8323f7 BP |
409 | printk(KERN_ERR PFX "%s: tray open\n", |
410 | drive->name); | |
1da177e4 LT |
411 | do_end_request = 1; |
412 | } else { | |
413 | struct cdrom_info *info = drive->driver_data; | |
414 | ||
5a3ea3b4 BP |
415 | /* |
416 | * Allow the drive 5 seconds to recover, some | |
1da177e4 | 417 | * devices will return this error while flushing |
5a3ea3b4 BP |
418 | * data from cache. |
419 | */ | |
1da177e4 | 420 | if (!rq->errors) |
83c8565d BP |
421 | info->write_timeout = jiffies + |
422 | ATAPI_WAIT_WRITE_BUSY; | |
1da177e4 LT |
423 | rq->errors = 1; |
424 | if (time_after(jiffies, info->write_timeout)) | |
425 | do_end_request = 1; | |
426 | else { | |
6ea52226 | 427 | struct request_queue *q = drive->queue; |
1da177e4 LT |
428 | unsigned long flags; |
429 | ||
430 | /* | |
5a3ea3b4 BP |
431 | * take a breather relying on the unplug |
432 | * timer to kick us again | |
1da177e4 | 433 | */ |
6ea52226 BZ |
434 | spin_lock_irqsave(q->queue_lock, flags); |
435 | blk_plug_device(q); | |
436 | spin_unlock_irqrestore(q->queue_lock, flags); | |
437 | ||
1da177e4 LT |
438 | return 1; |
439 | } | |
440 | } | |
441 | } else if (sense_key == UNIT_ATTENTION) { | |
5a3ea3b4 | 442 | /* media change */ |
e5e076a3 | 443 | cdrom_saw_media_change(drive); |
1da177e4 | 444 | |
9ce70fb2 | 445 | /* |
5a3ea3b4 BP |
446 | * Arrange to retry the request but be sure to give up |
447 | * if we've retried too many times. | |
9ce70fb2 | 448 | */ |
1da177e4 LT |
449 | if (++rq->errors > ERROR_MAX) |
450 | do_end_request = 1; | |
451 | } else if (sense_key == ILLEGAL_REQUEST || | |
452 | sense_key == DATA_PROTECT) { | |
9ce70fb2 | 453 | /* |
5a3ea3b4 BP |
454 | * No point in retrying after an illegal request or data |
455 | * protect error. | |
9ce70fb2 PC |
456 | */ |
457 | ide_dump_status_no_sense(drive, "command error", stat); | |
1da177e4 LT |
458 | do_end_request = 1; |
459 | } else if (sense_key == MEDIUM_ERROR) { | |
9ce70fb2 PC |
460 | /* |
461 | * No point in re-trying a zillion times on a bad | |
5a3ea3b4 | 462 | * sector. If we got here the error is not correctable. |
9ce70fb2 | 463 | */ |
83c8565d BP |
464 | ide_dump_status_no_sense(drive, |
465 | "media error (bad sector)", | |
466 | stat); | |
1da177e4 LT |
467 | do_end_request = 1; |
468 | } else if (sense_key == BLANK_CHECK) { | |
5a3ea3b4 | 469 | /* disk appears blank ?? */ |
83c8565d BP |
470 | ide_dump_status_no_sense(drive, "media error (blank)", |
471 | stat); | |
1da177e4 | 472 | do_end_request = 1; |
3a7d2484 | 473 | } else if ((err & ~ATA_ABORTED) != 0) { |
5a3ea3b4 | 474 | /* go to the default handler for other errors */ |
1da177e4 LT |
475 | ide_error(drive, "cdrom_decode_status", stat); |
476 | return 1; | |
477 | } else if ((++rq->errors > ERROR_MAX)) { | |
5a3ea3b4 | 478 | /* we've racked up too many retries, abort */ |
1da177e4 LT |
479 | do_end_request = 1; |
480 | } | |
481 | ||
5a3ea3b4 BP |
482 | /* |
483 | * End a request through request sense analysis when we have | |
484 | * sense data. We need this in order to perform end of media | |
485 | * processing. | |
486 | */ | |
bbb89e3d BZ |
487 | if (do_end_request) |
488 | goto end_request; | |
dbe217af | 489 | |
bbb89e3d | 490 | /* |
5a3ea3b4 BP |
491 | * If we got a CHECK_CONDITION status, queue |
492 | * a request sense command. | |
bbb89e3d | 493 | */ |
3a7d2484 | 494 | if (stat & ATA_ERR) |
bbb89e3d | 495 | cdrom_queue_request_sense(drive, NULL, NULL); |
1da177e4 | 496 | } else { |
fc8323f7 | 497 | blk_dump_rq_flags(rq, PFX "bad rq"); |
1da177e4 LT |
498 | cdrom_end_request(drive, 0); |
499 | } | |
500 | ||
5a3ea3b4 | 501 | /* retry, or handle the next request */ |
1da177e4 | 502 | return 1; |
bbb89e3d BZ |
503 | |
504 | end_request: | |
3a7d2484 | 505 | if (stat & ATA_ERR) { |
6ea52226 | 506 | struct request_queue *q = drive->queue; |
bbb89e3d BZ |
507 | unsigned long flags; |
508 | ||
6ea52226 | 509 | spin_lock_irqsave(q->queue_lock, flags); |
bbb89e3d | 510 | blkdev_dequeue_request(rq); |
6ea52226 | 511 | spin_unlock_irqrestore(q->queue_lock, flags); |
bbb89e3d | 512 | |
1d0bf587 BZ |
513 | hwgroup->rq = NULL; |
514 | ||
bbb89e3d BZ |
515 | cdrom_queue_request_sense(drive, rq->sense, rq); |
516 | } else | |
517 | cdrom_end_request(drive, 0); | |
518 | ||
519 | return 1; | |
1da177e4 LT |
520 | } |
521 | ||
522 | static int cdrom_timer_expiry(ide_drive_t *drive) | |
523 | { | |
524 | struct request *rq = HWGROUP(drive)->rq; | |
525 | unsigned long wait = 0; | |
526 | ||
fc8323f7 BP |
527 | ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd[0]: 0x%x\n", __func__, |
528 | rq->cmd[0]); | |
529 | ||
1da177e4 | 530 | /* |
5a3ea3b4 BP |
531 | * Some commands are *slow* and normally take a long time to complete. |
532 | * Usually we can use the ATAPI "disconnect" to bypass this, but not all | |
533 | * commands/drives support that. Let ide_timer_expiry keep polling us | |
534 | * for these. | |
1da177e4 LT |
535 | */ |
536 | switch (rq->cmd[0]) { | |
9ce70fb2 PC |
537 | case GPCMD_BLANK: |
538 | case GPCMD_FORMAT_UNIT: | |
539 | case GPCMD_RESERVE_RZONE_TRACK: | |
540 | case GPCMD_CLOSE_TRACK: | |
541 | case GPCMD_FLUSH_CACHE: | |
542 | wait = ATAPI_WAIT_PC; | |
543 | break; | |
544 | default: | |
545 | if (!(rq->cmd_flags & REQ_QUIET)) | |
fc8323f7 | 546 | printk(KERN_INFO PFX "cmd 0x%x timed out\n", |
83c8565d | 547 | rq->cmd[0]); |
9ce70fb2 PC |
548 | wait = 0; |
549 | break; | |
1da177e4 LT |
550 | } |
551 | return wait; | |
552 | } | |
553 | ||
5a3ea3b4 BP |
554 | /* |
555 | * Set up the device registers for transferring a packet command on DEV, | |
556 | * expecting to later transfer XFERLEN bytes. HANDLER is the routine | |
557 | * which actually transfers the command to the drive. If this is a | |
558 | * drq_interrupt device, this routine will arrange for HANDLER to be | |
559 | * called when the interrupt from the drive arrives. Otherwise, HANDLER | |
560 | * will be called immediately after the drive is prepared for the transfer. | |
561 | */ | |
1da177e4 LT |
562 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, |
563 | int xferlen, | |
564 | ide_handler_t *handler) | |
565 | { | |
1da177e4 LT |
566 | ide_hwif_t *hwif = drive->hwif; |
567 | ||
fc8323f7 BP |
568 | ide_debug_log(IDE_DBG_PC, "Call %s, xferlen: %d\n", __func__, xferlen); |
569 | ||
3a6a3549 | 570 | /* FIXME: for Virtual DMA we must check harder */ |
12469ac0 BP |
571 | if (drive->dma) |
572 | drive->dma = !hwif->dma_ops->dma_setup(drive); | |
1da177e4 | 573 | |
5a3ea3b4 | 574 | /* set up the controller registers */ |
9a410e79 | 575 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL, |
12469ac0 | 576 | xferlen, drive->dma); |
4fe67178 | 577 | |
570f89ea | 578 | if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) { |
f0dd8712 | 579 | /* waiting for CDB interrupt, not DMA yet. */ |
12469ac0 | 580 | if (drive->dma) |
f0dd8712 AL |
581 | drive->waiting_for_dma = 0; |
582 | ||
1da177e4 | 583 | /* packet command */ |
aaaade3f | 584 | ide_execute_command(drive, ATA_CMD_PACKET, handler, |
83c8565d | 585 | ATAPI_WAIT_PC, cdrom_timer_expiry); |
1da177e4 LT |
586 | return ide_started; |
587 | } else { | |
1fc14258 | 588 | ide_execute_pkt_cmd(drive); |
1da177e4 LT |
589 | |
590 | return (*handler) (drive); | |
591 | } | |
592 | } | |
593 | ||
5a3ea3b4 BP |
594 | /* |
595 | * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device | |
596 | * registers must have already been prepared by cdrom_start_packet_command. | |
597 | * HANDLER is the interrupt handler to call when the command completes or | |
598 | * there's data ready. | |
599 | */ | |
1da177e4 | 600 | #define ATAPI_MIN_CDB_BYTES 12 |
9ce70fb2 | 601 | static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive, |
1da177e4 LT |
602 | struct request *rq, |
603 | ide_handler_t *handler) | |
604 | { | |
605 | ide_hwif_t *hwif = drive->hwif; | |
606 | int cmd_len; | |
1da177e4 LT |
607 | ide_startstop_t startstop; |
608 | ||
fc8323f7 BP |
609 | ide_debug_log(IDE_DBG_PC, "Call %s\n", __func__); |
610 | ||
570f89ea | 611 | if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) { |
5a3ea3b4 BP |
612 | /* |
613 | * Here we should have been called after receiving an interrupt | |
614 | * from the device. DRQ should how be set. | |
615 | */ | |
1da177e4 | 616 | |
5a3ea3b4 | 617 | /* check for errors */ |
3a7d2484 | 618 | if (cdrom_decode_status(drive, ATA_DRQ, NULL)) |
1da177e4 | 619 | return ide_stopped; |
f0dd8712 | 620 | |
5a3ea3b4 | 621 | /* ok, next interrupt will be DMA interrupt */ |
12469ac0 | 622 | if (drive->dma) |
f0dd8712 | 623 | drive->waiting_for_dma = 1; |
1da177e4 | 624 | } else { |
5a3ea3b4 | 625 | /* otherwise, we must wait for DRQ to get set */ |
3a7d2484 BZ |
626 | if (ide_wait_stat(&startstop, drive, ATA_DRQ, |
627 | ATA_BUSY, WAIT_READY)) | |
1da177e4 LT |
628 | return startstop; |
629 | } | |
630 | ||
5a3ea3b4 | 631 | /* arm the interrupt handler */ |
1da177e4 LT |
632 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); |
633 | ||
634 | /* ATAPI commands get padded out to 12 bytes minimum */ | |
635 | cmd_len = COMMAND_SIZE(rq->cmd[0]); | |
636 | if (cmd_len < ATAPI_MIN_CDB_BYTES) | |
637 | cmd_len = ATAPI_MIN_CDB_BYTES; | |
638 | ||
5a3ea3b4 | 639 | /* send the command to the device */ |
374e042c | 640 | hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len); |
1da177e4 | 641 | |
5a3ea3b4 | 642 | /* start the DMA if need be */ |
12469ac0 | 643 | if (drive->dma) |
5e37bdc0 | 644 | hwif->dma_ops->dma_start(drive); |
1da177e4 LT |
645 | |
646 | return ide_started; | |
647 | } | |
648 | ||
1da177e4 LT |
649 | /* |
650 | * Check the contents of the interrupt reason register from the cdrom | |
651 | * and attempt to recover if there are problems. Returns 0 if everything's | |
652 | * ok; nonzero if the request has been terminated. | |
653 | */ | |
9f10d9ee BZ |
654 | static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, |
655 | int len, int ireason, int rw) | |
1da177e4 | 656 | { |
b73c7ee2 BZ |
657 | ide_hwif_t *hwif = drive->hwif; |
658 | ||
fc8323f7 BP |
659 | ide_debug_log(IDE_DBG_FUNC, "Call %s, ireason: 0x%x, rw: 0x%x\n", |
660 | __func__, ireason, rw); | |
661 | ||
0d6f7e3a BZ |
662 | /* |
663 | * ireason == 0: the drive wants to receive data from us | |
664 | * ireason == 2: the drive is expecting to transfer data to us | |
665 | */ | |
666 | if (ireason == (!rw << 1)) | |
1da177e4 | 667 | return 0; |
0d6f7e3a | 668 | else if (ireason == (rw << 1)) { |
5a5222d9 | 669 | |
5a3ea3b4 | 670 | /* whoops... */ |
fc8323f7 | 671 | printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n", |
177773ed | 672 | drive->name, __func__); |
1da177e4 | 673 | |
ae8789f0 | 674 | ide_pad_transfer(drive, rw, len); |
0d6f7e3a | 675 | } else if (rw == 0 && ireason == 1) { |
5a3ea3b4 BP |
676 | /* |
677 | * Some drives (ASUS) seem to tell us that status info is | |
678 | * available. Just get it and ignore. | |
1da177e4 | 679 | */ |
374e042c | 680 | (void)hwif->tp_ops->read_status(hwif); |
1da177e4 LT |
681 | return 0; |
682 | } else { | |
5a3ea3b4 | 683 | /* drive wants a command packet, or invalid ireason... */ |
fc8323f7 | 684 | printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n", |
177773ed | 685 | drive->name, __func__, ireason); |
1da177e4 LT |
686 | } |
687 | ||
9f10d9ee BZ |
688 | if (rq->cmd_type == REQ_TYPE_ATA_PC) |
689 | rq->cmd_flags |= REQ_FAILED; | |
690 | ||
1da177e4 LT |
691 | cdrom_end_request(drive, 0); |
692 | return -1; | |
693 | } | |
694 | ||
64814f23 BZ |
695 | /* |
696 | * Assume that the drive will always provide data in multiples of at least | |
697 | * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. | |
698 | */ | |
699 | static int ide_cd_check_transfer_size(ide_drive_t *drive, int len) | |
700 | { | |
fc8323f7 BP |
701 | ide_debug_log(IDE_DBG_FUNC, "Call %s, len: %d\n", __func__, len); |
702 | ||
64814f23 BZ |
703 | if ((len % SECTOR_SIZE) == 0) |
704 | return 0; | |
705 | ||
fc8323f7 BP |
706 | printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name, |
707 | __func__, len); | |
64814f23 | 708 | |
570f89ea | 709 | if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES) |
fc8323f7 BP |
710 | printk(KERN_ERR PFX "This drive is not supported by this " |
711 | "version of the driver\n"); | |
64814f23 | 712 | else { |
fc8323f7 | 713 | printk(KERN_ERR PFX "Trying to limit transfer sizes\n"); |
570f89ea | 714 | drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES; |
64814f23 BZ |
715 | } |
716 | ||
717 | return 1; | |
718 | } | |
719 | ||
0041e7c6 | 720 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); |
94f5a86d | 721 | |
90eb808e BP |
722 | static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive, |
723 | struct request *rq) | |
1da177e4 | 724 | { |
fc8323f7 BP |
725 | ide_debug_log(IDE_DBG_RQ, "Call %s: rq->cmd_flags: 0x%x\n", __func__, |
726 | rq->cmd_flags); | |
727 | ||
29f3aaca BZ |
728 | if (rq_data_dir(rq) == READ) { |
729 | unsigned short sectors_per_frame = | |
730 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
731 | int nskip = rq->sector & (sectors_per_frame - 1); | |
1da177e4 | 732 | |
29f3aaca BZ |
733 | /* |
734 | * If the requested sector doesn't start on a frame boundary, | |
735 | * we must adjust the start of the transfer so that it does, | |
736 | * and remember to skip the first few sectors. | |
737 | * | |
738 | * If the rq->current_nr_sectors field is larger than the size | |
739 | * of the buffer, it will mean that we're to skip a number of | |
740 | * sectors equal to the amount by which rq->current_nr_sectors | |
741 | * is larger than the buffer size. | |
742 | */ | |
743 | if (nskip > 0) { | |
5a3ea3b4 | 744 | /* sanity check... */ |
29f3aaca BZ |
745 | if (rq->current_nr_sectors != |
746 | bio_cur_sectors(rq->bio)) { | |
fc8323f7 | 747 | printk(KERN_ERR PFX "%s: %s: buffer botch (%u)\n", |
177773ed | 748 | drive->name, __func__, |
29f3aaca BZ |
749 | rq->current_nr_sectors); |
750 | cdrom_end_request(drive, 0); | |
751 | return ide_stopped; | |
752 | } | |
753 | rq->current_nr_sectors += nskip; | |
1da177e4 | 754 | } |
1da177e4 | 755 | } |
fc8323f7 | 756 | |
5a3ea3b4 | 757 | /* set up the command */ |
1da177e4 LT |
758 | rq->timeout = ATAPI_WAIT_PC; |
759 | ||
90eb808e BP |
760 | return ide_started; |
761 | } | |
762 | ||
763 | /* | |
764 | * Routine to send a read/write packet command to the drive. This is usually | |
765 | * called directly from cdrom_start_{read,write}(). However, for drq_interrupt | |
766 | * devices, it is called from an interrupt when the drive is ready to accept | |
767 | * the command. | |
768 | */ | |
769 | static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive) | |
770 | { | |
771 | struct request *rq = drive->hwif->hwgroup->rq; | |
772 | ||
5a3ea3b4 | 773 | /* send the command to the drive and return */ |
0041e7c6 | 774 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
1da177e4 LT |
775 | } |
776 | ||
9ce70fb2 | 777 | /* |
5a3ea3b4 BP |
778 | * Fix up a possibly partially-processed request so that we can start it over |
779 | * entirely, or even put it back on the request queue. | |
9ce70fb2 | 780 | */ |
fc8323f7 | 781 | static void ide_cd_restore_request(ide_drive_t *drive, struct request *rq) |
1da177e4 | 782 | { |
fc8323f7 BP |
783 | |
784 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); | |
785 | ||
1da177e4 | 786 | if (rq->buffer != bio_data(rq->bio)) { |
83c8565d BP |
787 | sector_t n = |
788 | (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE; | |
1da177e4 LT |
789 | |
790 | rq->buffer = bio_data(rq->bio); | |
791 | rq->nr_sectors += n; | |
792 | rq->sector -= n; | |
793 | } | |
83c8565d BP |
794 | rq->current_nr_sectors = bio_cur_sectors(rq->bio); |
795 | rq->hard_cur_sectors = rq->current_nr_sectors; | |
1da177e4 LT |
796 | rq->hard_nr_sectors = rq->nr_sectors; |
797 | rq->hard_sector = rq->sector; | |
798 | rq->q->prep_rq_fn(rq->q, rq); | |
799 | } | |
800 | ||
fc8323f7 | 801 | static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct request *rq) |
8ee69f5a | 802 | { |
71b429ca BP |
803 | ide_debug_log(IDE_DBG_FUNC, "Call %s, rq->cmd[0]: 0x%x\n", |
804 | __func__, rq->cmd[0]); | |
fc8323f7 | 805 | |
8ee69f5a BZ |
806 | /* |
807 | * Some of the trailing request sense fields are optional, | |
808 | * and some drives don't send them. Sigh. | |
809 | */ | |
810 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && | |
811 | rq->data_len > 0 && rq->data_len <= 5) | |
812 | while (rq->data_len > 0) { | |
813 | *(u8 *)rq->data++ = 0; | |
814 | --rq->data_len; | |
815 | } | |
816 | } | |
817 | ||
5f828546 FT |
818 | int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, |
819 | int write, void *buffer, unsigned *bufflen, | |
820 | struct request_sense *sense, int timeout, | |
821 | unsigned int cmd_flags) | |
1da177e4 | 822 | { |
5f828546 FT |
823 | struct cdrom_info *info = drive->driver_data; |
824 | struct request_sense local_sense; | |
1da177e4 | 825 | int retries = 10; |
5f828546 | 826 | unsigned int flags = 0; |
1da177e4 | 827 | |
5f828546 FT |
828 | if (!sense) |
829 | sense = &local_sense; | |
1da177e4 | 830 | |
71b429ca | 831 | ide_debug_log(IDE_DBG_PC, "Call %s, cmd[0]: 0x%x, write: 0x%x, " |
fc8323f7 BP |
832 | "timeout: %d, cmd_flags: 0x%x\n", __func__, cmd[0], write, |
833 | timeout, cmd_flags); | |
834 | ||
5a3ea3b4 | 835 | /* start of retry loop */ |
1da177e4 | 836 | do { |
5f828546 | 837 | struct request *rq; |
1da177e4 | 838 | int error; |
1da177e4 | 839 | |
5f828546 FT |
840 | rq = blk_get_request(drive->queue, write, __GFP_WAIT); |
841 | ||
842 | memcpy(rq->cmd, cmd, BLK_MAX_CDB); | |
843 | rq->cmd_type = REQ_TYPE_ATA_PC; | |
844 | rq->sense = sense; | |
845 | rq->cmd_flags |= cmd_flags; | |
846 | rq->timeout = timeout; | |
847 | if (buffer) { | |
848 | rq->data = buffer; | |
849 | rq->data_len = *bufflen; | |
850 | } | |
851 | ||
852 | error = blk_execute_rq(drive->queue, info->disk, rq, 0); | |
853 | ||
854 | if (buffer) | |
855 | *bufflen = rq->data_len; | |
856 | ||
857 | flags = rq->cmd_flags; | |
858 | blk_put_request(rq); | |
1da177e4 | 859 | |
5a3ea3b4 BP |
860 | /* |
861 | * FIXME: we should probably abort/retry or something in case of | |
862 | * failure. | |
863 | */ | |
5f828546 | 864 | if (flags & REQ_FAILED) { |
5a3ea3b4 BP |
865 | /* |
866 | * The request failed. Retry if it was due to a unit | |
867 | * attention status (usually means media was changed). | |
868 | */ | |
5f828546 | 869 | struct request_sense *reqbuf = sense; |
1da177e4 LT |
870 | |
871 | if (reqbuf->sense_key == UNIT_ATTENTION) | |
872 | cdrom_saw_media_change(drive); | |
873 | else if (reqbuf->sense_key == NOT_READY && | |
874 | reqbuf->asc == 4 && reqbuf->ascq != 4) { | |
5a3ea3b4 BP |
875 | /* |
876 | * The drive is in the process of loading | |
877 | * a disk. Retry, but wait a little to give | |
878 | * the drive time to complete the load. | |
879 | */ | |
1da177e4 LT |
880 | ssleep(2); |
881 | } else { | |
5a3ea3b4 | 882 | /* otherwise, don't retry */ |
1da177e4 LT |
883 | retries = 0; |
884 | } | |
885 | --retries; | |
886 | } | |
887 | ||
5a3ea3b4 | 888 | /* end of retry loop */ |
5f828546 | 889 | } while ((flags & REQ_FAILED) && retries >= 0); |
1da177e4 | 890 | |
5a3ea3b4 | 891 | /* return an error if the command failed */ |
5f828546 | 892 | return (flags & REQ_FAILED) ? -EIO : 0; |
1da177e4 LT |
893 | } |
894 | ||
aaa04c28 | 895 | /* |
5a3ea3b4 BP |
896 | * Called from blk_end_request_callback() after the data of the request is |
897 | * completed and before the request itself is completed. By returning value '1', | |
898 | * blk_end_request_callback() returns immediately without completing it. | |
aaa04c28 KU |
899 | */ |
900 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) | |
901 | { | |
902 | return 1; | |
903 | } | |
904 | ||
1da177e4 LT |
905 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
906 | { | |
23579a2a | 907 | ide_hwif_t *hwif = drive->hwif; |
1d0bf587 BZ |
908 | ide_hwgroup_t *hwgroup = hwif->hwgroup; |
909 | struct request *rq = hwgroup->rq; | |
1da177e4 | 910 | xfer_func_t *xferfunc; |
0041e7c6 | 911 | ide_expiry_t *expiry = NULL; |
1823649b | 912 | int dma_error = 0, dma, stat, thislen, uptodate = 0; |
ff1bfbc1 BZ |
913 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; |
914 | unsigned int timeout; | |
1823649b BZ |
915 | u16 len; |
916 | u8 ireason; | |
1da177e4 | 917 | |
fc8323f7 BP |
918 | ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x\n", |
919 | __func__, rq->cmd[0], write); | |
920 | ||
5a3ea3b4 | 921 | /* check for errors */ |
12469ac0 | 922 | dma = drive->dma; |
1da177e4 | 923 | if (dma) { |
12469ac0 | 924 | drive->dma = 0; |
5e37bdc0 | 925 | dma_error = hwif->dma_ops->dma_end(drive); |
eba15fba | 926 | if (dma_error) { |
fc8323f7 | 927 | printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name, |
ff1bfbc1 | 928 | write ? "write" : "read"); |
eba15fba BZ |
929 | ide_dma_off(drive); |
930 | } | |
1da177e4 LT |
931 | } |
932 | ||
933 | if (cdrom_decode_status(drive, 0, &stat)) | |
934 | return ide_stopped; | |
935 | ||
5a3ea3b4 | 936 | /* using dma, transfer is complete now */ |
1da177e4 | 937 | if (dma) { |
eba15fba | 938 | if (dma_error) |
1da177e4 | 939 | return ide_error(drive, "dma error", stat); |
0041e7c6 BZ |
940 | if (blk_fs_request(rq)) { |
941 | ide_end_request(drive, 1, rq->nr_sectors); | |
942 | return ide_stopped; | |
943 | } | |
ff1bfbc1 | 944 | goto end_request; |
1da177e4 LT |
945 | } |
946 | ||
1823649b | 947 | ide_read_bcount_and_ireason(drive, &len, &ireason); |
0041e7c6 BZ |
948 | |
949 | thislen = blk_fs_request(rq) ? len : rq->data_len; | |
1da177e4 LT |
950 | if (thislen > len) |
951 | thislen = len; | |
952 | ||
fc8323f7 BP |
953 | ide_debug_log(IDE_DBG_PC, "%s: DRQ: stat: 0x%x, thislen: %d\n", |
954 | __func__, stat, thislen); | |
955 | ||
5a3ea3b4 | 956 | /* If DRQ is clear, the command has completed. */ |
3a7d2484 | 957 | if ((stat & ATA_DRQ) == 0) { |
0041e7c6 BZ |
958 | if (blk_fs_request(rq)) { |
959 | /* | |
960 | * If we're not done reading/writing, complain. | |
961 | * Otherwise, complete the command normally. | |
962 | */ | |
963 | uptodate = 1; | |
964 | if (rq->current_nr_sectors > 0) { | |
fc8323f7 | 965 | printk(KERN_ERR PFX "%s: %s: data underrun " |
0041e7c6 | 966 | "(%d blocks)\n", |
177773ed | 967 | drive->name, __func__, |
0041e7c6 BZ |
968 | rq->current_nr_sectors); |
969 | if (!write) | |
970 | rq->cmd_flags |= REQ_FAILED; | |
971 | uptodate = 0; | |
972 | } | |
973 | cdrom_end_request(drive, uptodate); | |
974 | return ide_stopped; | |
975 | } else if (!blk_pc_request(rq)) { | |
fc8323f7 | 976 | ide_cd_request_sense_fixup(drive, rq); |
5a3ea3b4 | 977 | /* complain if we still have data left to transfer */ |
ff1bfbc1 BZ |
978 | uptodate = rq->data_len ? 0 : 1; |
979 | } | |
980 | goto end_request; | |
aaa04c28 | 981 | } |
1da177e4 | 982 | |
5a3ea3b4 | 983 | /* check which way to transfer data */ |
9f10d9ee BZ |
984 | if (ide_cd_check_ireason(drive, rq, len, ireason, write)) |
985 | return ide_stopped; | |
0041e7c6 | 986 | |
9f10d9ee BZ |
987 | if (blk_fs_request(rq)) { |
988 | if (write == 0) { | |
0041e7c6 BZ |
989 | int nskip; |
990 | ||
991 | if (ide_cd_check_transfer_size(drive, len)) { | |
992 | cdrom_end_request(drive, 0); | |
993 | return ide_stopped; | |
994 | } | |
995 | ||
996 | /* | |
997 | * First, figure out if we need to bit-bucket | |
998 | * any of the leading sectors. | |
999 | */ | |
1000 | nskip = min_t(int, rq->current_nr_sectors | |
1001 | - bio_cur_sectors(rq->bio), | |
1002 | thislen >> 9); | |
1003 | if (nskip > 0) { | |
ae8789f0 | 1004 | ide_pad_transfer(drive, write, nskip << 9); |
0041e7c6 BZ |
1005 | rq->current_nr_sectors -= nskip; |
1006 | thislen -= (nskip << 9); | |
1007 | } | |
1008 | } | |
ff1bfbc1 | 1009 | } |
1da177e4 | 1010 | |
ff1bfbc1 BZ |
1011 | if (ireason == 0) { |
1012 | write = 1; | |
374e042c | 1013 | xferfunc = hwif->tp_ops->output_data; |
9f10d9ee | 1014 | } else { |
ff1bfbc1 | 1015 | write = 0; |
374e042c | 1016 | xferfunc = hwif->tp_ops->input_data; |
1da177e4 LT |
1017 | } |
1018 | ||
fc8323f7 BP |
1019 | ide_debug_log(IDE_DBG_PC, "%s: data transfer, rq->cmd_type: 0x%x, " |
1020 | "ireason: 0x%x\n", __func__, rq->cmd_type, ireason); | |
1021 | ||
5a3ea3b4 | 1022 | /* transfer data */ |
1da177e4 | 1023 | while (thislen > 0) { |
0041e7c6 | 1024 | u8 *ptr = blk_fs_request(rq) ? NULL : rq->data; |
a11e77db | 1025 | int blen = rq->data_len; |
1da177e4 | 1026 | |
5a3ea3b4 | 1027 | /* bio backed? */ |
1da177e4 | 1028 | if (rq->bio) { |
0041e7c6 BZ |
1029 | if (blk_fs_request(rq)) { |
1030 | ptr = rq->buffer; | |
1031 | blen = rq->current_nr_sectors << 9; | |
1032 | } else { | |
1033 | ptr = bio_data(rq->bio); | |
1034 | blen = bio_iovec(rq->bio)->bv_len; | |
1035 | } | |
1da177e4 LT |
1036 | } |
1037 | ||
1038 | if (!ptr) { | |
0041e7c6 BZ |
1039 | if (blk_fs_request(rq) && !write) |
1040 | /* | |
968c4964 | 1041 | * If the buffers are full, pipe the rest into |
5a3ea3b4 BP |
1042 | * oblivion. |
1043 | */ | |
ae8789f0 | 1044 | ide_pad_transfer(drive, 0, thislen); |
0041e7c6 | 1045 | else { |
fc8323f7 | 1046 | printk(KERN_ERR PFX "%s: confused, missing data\n", |
0041e7c6 BZ |
1047 | drive->name); |
1048 | blk_dump_rq_flags(rq, rq_data_dir(rq) | |
1049 | ? "cdrom_newpc_intr, write" | |
1050 | : "cdrom_newpc_intr, read"); | |
1051 | } | |
1da177e4 LT |
1052 | break; |
1053 | } | |
1054 | ||
1055 | if (blen > thislen) | |
1056 | blen = thislen; | |
1057 | ||
9567b349 | 1058 | xferfunc(drive, NULL, ptr, blen); |
1da177e4 LT |
1059 | |
1060 | thislen -= blen; | |
1061 | len -= blen; | |
1da177e4 | 1062 | |
0041e7c6 BZ |
1063 | if (blk_fs_request(rq)) { |
1064 | rq->buffer += blen; | |
1065 | rq->nr_sectors -= (blen >> 9); | |
1066 | rq->current_nr_sectors -= (blen >> 9); | |
1067 | rq->sector += (blen >> 9); | |
1068 | ||
1069 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) | |
1070 | cdrom_end_request(drive, 1); | |
1071 | } else { | |
1072 | rq->data_len -= blen; | |
1073 | ||
aaa04c28 KU |
1074 | /* |
1075 | * The request can't be completed until DRQ is cleared. | |
1076 | * So complete the data, but don't complete the request | |
1077 | * using the dummy function for the callback feature | |
1078 | * of blk_end_request_callback(). | |
1079 | */ | |
0041e7c6 BZ |
1080 | if (rq->bio) |
1081 | blk_end_request_callback(rq, 0, blen, | |
aaa04c28 | 1082 | cdrom_newpc_intr_dummy_cb); |
0041e7c6 BZ |
1083 | else |
1084 | rq->data += blen; | |
1085 | } | |
bcd88ac3 AS |
1086 | if (!write && blk_sense_request(rq)) |
1087 | rq->sense_len += blen; | |
1da177e4 LT |
1088 | } |
1089 | ||
5a3ea3b4 | 1090 | /* pad, if necessary */ |
0041e7c6 | 1091 | if (!blk_fs_request(rq) && len > 0) |
ae8789f0 | 1092 | ide_pad_transfer(drive, write, len); |
1da177e4 | 1093 | |
ff1bfbc1 BZ |
1094 | if (blk_pc_request(rq)) { |
1095 | timeout = rq->timeout; | |
ff1bfbc1 BZ |
1096 | } else { |
1097 | timeout = ATAPI_WAIT_PC; | |
0041e7c6 BZ |
1098 | if (!blk_fs_request(rq)) |
1099 | expiry = cdrom_timer_expiry; | |
ff1bfbc1 BZ |
1100 | } |
1101 | ||
1102 | ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); | |
1da177e4 | 1103 | return ide_started; |
ff1bfbc1 BZ |
1104 | |
1105 | end_request: | |
1106 | if (blk_pc_request(rq)) { | |
14e04c3f KU |
1107 | unsigned int dlen = rq->data_len; |
1108 | ||
1109 | if (dma) | |
1110 | rq->data_len = 0; | |
ff1bfbc1 | 1111 | |
3c8a2cce | 1112 | if (blk_end_request(rq, 0, dlen)) |
ff1bfbc1 | 1113 | BUG(); |
1d0bf587 BZ |
1114 | |
1115 | hwgroup->rq = NULL; | |
ff1bfbc1 BZ |
1116 | } else { |
1117 | if (!uptodate) | |
1118 | rq->cmd_flags |= REQ_FAILED; | |
1119 | cdrom_end_request(drive, uptodate); | |
1120 | } | |
1121 | return ide_stopped; | |
1da177e4 LT |
1122 | } |
1123 | ||
21ea1f0f | 1124 | static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) |
1da177e4 | 1125 | { |
21ea1f0f BZ |
1126 | struct cdrom_info *cd = drive->driver_data; |
1127 | int write = rq_data_dir(rq) == WRITE; | |
1128 | unsigned short sectors_per_frame = | |
1129 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; | |
1da177e4 | 1130 | |
71b429ca BP |
1131 | ide_debug_log(IDE_DBG_RQ, "Call %s, rq->cmd[0]: 0x%x, write: 0x%x, " |
1132 | "secs_per_frame: %u\n", | |
1133 | __func__, rq->cmd[0], write, sectors_per_frame); | |
fc8323f7 | 1134 | |
21ea1f0f | 1135 | if (write) { |
5a3ea3b4 | 1136 | /* disk has become write protected */ |
b7db9956 | 1137 | if (get_disk_ro(cd->disk)) { |
21ea1f0f BZ |
1138 | cdrom_end_request(drive, 0); |
1139 | return ide_stopped; | |
1140 | } | |
1141 | } else { | |
1142 | /* | |
1143 | * We may be retrying this request after an error. Fix up any | |
1144 | * weirdness which might be present in the request packet. | |
1145 | */ | |
fc8323f7 | 1146 | ide_cd_restore_request(drive, rq); |
1da177e4 LT |
1147 | } |
1148 | ||
5a3ea3b4 | 1149 | /* use DMA, if possible / writes *must* be hardware frame aligned */ |
21ea1f0f BZ |
1150 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
1151 | (rq->sector & (sectors_per_frame - 1))) { | |
1152 | if (write) { | |
1153 | cdrom_end_request(drive, 0); | |
1154 | return ide_stopped; | |
1155 | } | |
12469ac0 | 1156 | drive->dma = 0; |
21ea1f0f | 1157 | } else |
12469ac0 | 1158 | drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); |
1da177e4 | 1159 | |
21ea1f0f BZ |
1160 | if (write) |
1161 | cd->devinfo.media_written = 1; | |
1da177e4 | 1162 | |
b6ca440a | 1163 | return ide_started; |
1da177e4 LT |
1164 | } |
1165 | ||
1166 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) | |
1167 | { | |
1168 | struct request *rq = HWGROUP(drive)->rq; | |
1169 | ||
1da177e4 LT |
1170 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
1171 | } | |
1172 | ||
b6ca440a | 1173 | static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
1da177e4 | 1174 | { |
1da177e4 | 1175 | |
71b429ca BP |
1176 | ide_debug_log(IDE_DBG_PC, "Call %s, rq->cmd[0]: 0x%x, " |
1177 | "rq->cmd_type: 0x%x\n", __func__, rq->cmd[0], | |
fc8323f7 BP |
1178 | rq->cmd_type); |
1179 | ||
c9f56a80 BZ |
1180 | if (blk_pc_request(rq)) |
1181 | rq->cmd_flags |= REQ_QUIET; | |
1182 | else | |
1183 | rq->cmd_flags &= ~REQ_FAILED; | |
1da177e4 | 1184 | |
12469ac0 | 1185 | drive->dma = 0; |
1da177e4 | 1186 | |
5a3ea3b4 | 1187 | /* sg request */ |
e5318b53 FT |
1188 | if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) { |
1189 | struct request_queue *q = drive->queue; | |
1190 | unsigned int alignment; | |
efa402d5 | 1191 | char *buf; |
1da177e4 | 1192 | |
e5318b53 | 1193 | if (rq->bio) |
efa402d5 | 1194 | buf = bio_data(rq->bio); |
e5318b53 | 1195 | else |
efa402d5 | 1196 | buf = rq->data; |
e5318b53 | 1197 | |
12469ac0 | 1198 | drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); |
1da177e4 LT |
1199 | |
1200 | /* | |
1201 | * check if dma is safe | |
5d9e4ea5 LT |
1202 | * |
1203 | * NOTE! The "len" and "addr" checks should possibly have | |
1204 | * separate masks. | |
1da177e4 | 1205 | */ |
e5318b53 | 1206 | alignment = queue_dma_alignment(q) | q->dma_pad_mask; |
9bd27cba BP |
1207 | if ((unsigned long)buf & alignment |
1208 | || rq->data_len & q->dma_pad_mask | |
efa402d5 | 1209 | || object_is_on_stack(buf)) |
12469ac0 | 1210 | drive->dma = 0; |
1da177e4 | 1211 | } |
1da177e4 LT |
1212 | } |
1213 | ||
99384aea | 1214 | static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, |
e5e076a3 | 1215 | sector_t block) |
1da177e4 | 1216 | { |
b6ca440a BP |
1217 | ide_handler_t *fn; |
1218 | int xferlen; | |
1da177e4 | 1219 | |
71b429ca BP |
1220 | ide_debug_log(IDE_DBG_RQ, "Call %s, rq->cmd[0]: 0x%x, " |
1221 | "rq->cmd_type: 0x%x, block: %llu\n", | |
1222 | __func__, rq->cmd[0], rq->cmd_type, | |
1223 | (unsigned long long)block); | |
fc8323f7 | 1224 | |
1da177e4 | 1225 | if (blk_fs_request(rq)) { |
27c01c2d BZ |
1226 | xferlen = 32768; |
1227 | fn = cdrom_start_rw_cont; | |
90eb808e | 1228 | |
27c01c2d BZ |
1229 | if (cdrom_start_rw(drive, rq) == ide_stopped) |
1230 | return ide_stopped; | |
90eb808e | 1231 | |
27c01c2d BZ |
1232 | if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped) |
1233 | return ide_stopped; | |
c9f56a80 | 1234 | } else if (blk_sense_request(rq) || blk_pc_request(rq) || |
cea2885a | 1235 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
b6ca440a BP |
1236 | xferlen = rq->data_len; |
1237 | fn = cdrom_do_newpc_cont; | |
7fcebda5 BP |
1238 | |
1239 | if (!rq->timeout) | |
1240 | rq->timeout = ATAPI_WAIT_PC; | |
1241 | ||
b6ca440a | 1242 | cdrom_do_block_pc(drive, rq); |
4aff5e23 | 1243 | } else if (blk_special_request(rq)) { |
5a3ea3b4 | 1244 | /* right now this can only be a reset... */ |
1da177e4 LT |
1245 | cdrom_end_request(drive, 1); |
1246 | return ide_stopped; | |
ab9d6e33 | 1247 | } else { |
fc8323f7 | 1248 | blk_dump_rq_flags(rq, DRV_NAME " bad flags"); |
ab9d6e33 BP |
1249 | cdrom_end_request(drive, 0); |
1250 | return ide_stopped; | |
1da177e4 | 1251 | } |
b6ca440a BP |
1252 | |
1253 | return cdrom_start_packet_command(drive, xferlen, fn); | |
1da177e4 LT |
1254 | } |
1255 | ||
5a3ea3b4 | 1256 | /* |
1da177e4 LT |
1257 | * Ioctl handling. |
1258 | * | |
5a3ea3b4 BP |
1259 | * Routines which queue packet commands take as a final argument a pointer to a |
1260 | * request_sense struct. If execution of the command results in an error with a | |
1261 | * CHECK CONDITION status, this structure will be filled with the results of the | |
1262 | * subsequent request sense command. The pointer can also be NULL, in which case | |
1263 | * no sense information is returned. | |
1da177e4 | 1264 | */ |
e5e076a3 | 1265 | static void msf_from_bcd(struct atapi_msf *msf) |
1da177e4 | 1266 | { |
fc99856a AB |
1267 | msf->minute = bcd2bin(msf->minute); |
1268 | msf->second = bcd2bin(msf->second); | |
1269 | msf->frame = bcd2bin(msf->frame); | |
1da177e4 LT |
1270 | } |
1271 | ||
f9afd18b | 1272 | int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 | 1273 | { |
1da177e4 LT |
1274 | struct cdrom_info *info = drive->driver_data; |
1275 | struct cdrom_device_info *cdi = &info->devinfo; | |
5f828546 | 1276 | unsigned char cmd[BLK_MAX_CDB]; |
1da177e4 | 1277 | |
fc8323f7 BP |
1278 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1279 | ||
5f828546 FT |
1280 | memset(cmd, 0, BLK_MAX_CDB); |
1281 | cmd[0] = GPCMD_TEST_UNIT_READY; | |
1da177e4 | 1282 | |
cdf6000d | 1283 | /* |
5a3ea3b4 BP |
1284 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs |
1285 | * instead of supporting the LOAD_UNLOAD opcode. | |
cdf6000d | 1286 | */ |
5f828546 | 1287 | cmd[7] = cdi->sanyo_slot % 3; |
1da177e4 | 1288 | |
141d3b27 | 1289 | return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET); |
1da177e4 LT |
1290 | } |
1291 | ||
1da177e4 LT |
1292 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
1293 | unsigned long *sectors_per_frame, | |
1294 | struct request_sense *sense) | |
1295 | { | |
1296 | struct { | |
141d3b27 HH |
1297 | __be32 lba; |
1298 | __be32 blocklen; | |
1da177e4 LT |
1299 | } capbuf; |
1300 | ||
1301 | int stat; | |
5f828546 FT |
1302 | unsigned char cmd[BLK_MAX_CDB]; |
1303 | unsigned len = sizeof(capbuf); | |
938bb03d | 1304 | u32 blocklen; |
1da177e4 | 1305 | |
fc8323f7 BP |
1306 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1307 | ||
5f828546 FT |
1308 | memset(cmd, 0, BLK_MAX_CDB); |
1309 | cmd[0] = GPCMD_READ_CDVD_CAPACITY; | |
1da177e4 | 1310 | |
5f828546 FT |
1311 | stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0, |
1312 | REQ_QUIET); | |
e8e7b9eb JA |
1313 | if (stat) |
1314 | return stat; | |
1315 | ||
1316 | /* | |
1317 | * Sanity check the given block size | |
1318 | */ | |
938bb03d PT |
1319 | blocklen = be32_to_cpu(capbuf.blocklen); |
1320 | switch (blocklen) { | |
1321 | case 512: | |
1322 | case 1024: | |
1323 | case 2048: | |
1324 | case 4096: | |
e8e7b9eb JA |
1325 | break; |
1326 | default: | |
fc8323f7 BP |
1327 | printk(KERN_ERR PFX "%s: weird block size %u\n", |
1328 | drive->name, blocklen); | |
1329 | printk(KERN_ERR PFX "%s: default to 2kb block size\n", | |
1330 | drive->name); | |
938bb03d | 1331 | blocklen = 2048; |
e8e7b9eb | 1332 | break; |
1da177e4 LT |
1333 | } |
1334 | ||
e8e7b9eb | 1335 | *capacity = 1 + be32_to_cpu(capbuf.lba); |
938bb03d | 1336 | *sectors_per_frame = blocklen >> SECTOR_BITS; |
71b429ca BP |
1337 | |
1338 | ide_debug_log(IDE_DBG_PROBE, "%s: cap: %lu, sectors_per_frame: %lu\n", | |
1339 | __func__, *capacity, *sectors_per_frame); | |
1340 | ||
e8e7b9eb | 1341 | return 0; |
1da177e4 LT |
1342 | } |
1343 | ||
1344 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, | |
1345 | int format, char *buf, int buflen, | |
1346 | struct request_sense *sense) | |
1347 | { | |
5f828546 | 1348 | unsigned char cmd[BLK_MAX_CDB]; |
1da177e4 | 1349 | |
fc8323f7 BP |
1350 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1351 | ||
5f828546 | 1352 | memset(cmd, 0, BLK_MAX_CDB); |
1da177e4 | 1353 | |
5f828546 FT |
1354 | cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
1355 | cmd[6] = trackno; | |
1356 | cmd[7] = (buflen >> 8); | |
1357 | cmd[8] = (buflen & 0xff); | |
1358 | cmd[9] = (format << 6); | |
1da177e4 LT |
1359 | |
1360 | if (msf_flag) | |
5f828546 | 1361 | cmd[1] = 2; |
1da177e4 | 1362 | |
5f828546 | 1363 | return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET); |
1da177e4 LT |
1364 | } |
1365 | ||
1da177e4 | 1366 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
17802998 | 1367 | int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) |
1da177e4 LT |
1368 | { |
1369 | int stat, ntracks, i; | |
1370 | struct cdrom_info *info = drive->driver_data; | |
1371 | struct cdrom_device_info *cdi = &info->devinfo; | |
1372 | struct atapi_toc *toc = info->toc; | |
1373 | struct { | |
1374 | struct atapi_toc_header hdr; | |
1375 | struct atapi_toc_entry ent; | |
1376 | } ms_tmp; | |
1377 | long last_written; | |
1378 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; | |
1379 | ||
fc8323f7 BP |
1380 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1381 | ||
1da177e4 | 1382 | if (toc == NULL) { |
5a3ea3b4 | 1383 | /* try to allocate space */ |
2a91f3e5 | 1384 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
1da177e4 | 1385 | if (toc == NULL) { |
fc8323f7 | 1386 | printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n", |
83c8565d | 1387 | drive->name); |
1da177e4 LT |
1388 | return -ENOMEM; |
1389 | } | |
2a91f3e5 | 1390 | info->toc = toc; |
1da177e4 LT |
1391 | } |
1392 | ||
5a3ea3b4 BP |
1393 | /* |
1394 | * Check to see if the existing data is still valid. If it is, | |
1395 | * just return. | |
1396 | */ | |
1da177e4 LT |
1397 | (void) cdrom_check_status(drive, sense); |
1398 | ||
570f89ea | 1399 | if (drive->atapi_flags & IDE_AFLAG_TOC_VALID) |
1da177e4 LT |
1400 | return 0; |
1401 | ||
5a3ea3b4 | 1402 | /* try to get the total cdrom capacity and sector size */ |
1da177e4 LT |
1403 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
1404 | sense); | |
1405 | if (stat) | |
1406 | toc->capacity = 0x1fffff; | |
1407 | ||
1408 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
5a3ea3b4 | 1409 | /* save a private copy of the TOC capacity for error handling */ |
dbe217af AC |
1410 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1411 | ||
1da177e4 LT |
1412 | blk_queue_hardsect_size(drive->queue, |
1413 | sectors_per_frame << SECTOR_BITS); | |
1414 | ||
5a3ea3b4 | 1415 | /* first read just the header, so we know how long the TOC is */ |
1da177e4 LT |
1416 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
1417 | sizeof(struct atapi_toc_header), sense); | |
2a91f3e5 JJ |
1418 | if (stat) |
1419 | return stat; | |
1da177e4 | 1420 | |
570f89ea | 1421 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) { |
fc99856a AB |
1422 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); |
1423 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); | |
1da177e4 | 1424 | } |
1da177e4 LT |
1425 | |
1426 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
1427 | if (ntracks <= 0) | |
1428 | return -EIO; | |
1429 | if (ntracks > MAX_TRACKS) | |
1430 | ntracks = MAX_TRACKS; | |
1431 | ||
5a3ea3b4 | 1432 | /* now read the whole schmeer */ |
1da177e4 LT |
1433 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
1434 | (char *)&toc->hdr, | |
1435 | sizeof(struct atapi_toc_header) + | |
1436 | (ntracks + 1) * | |
1437 | sizeof(struct atapi_toc_entry), sense); | |
1438 | ||
1439 | if (stat && toc->hdr.first_track > 1) { | |
5a3ea3b4 BP |
1440 | /* |
1441 | * Cds with CDI tracks only don't have any TOC entries, despite | |
1442 | * of this the returned values are | |
1443 | * first_track == last_track = number of CDI tracks + 1, | |
1444 | * so that this case is indistinguishable from the same layout | |
1445 | * plus an additional audio track. If we get an error for the | |
1446 | * regular case, we assume a CDI without additional audio | |
1447 | * tracks. In this case the readable TOC is empty (CDI tracks | |
1448 | * are not included) and only holds the Leadout entry. | |
1449 | * | |
1450 | * Heiko Eißfeldt. | |
1451 | */ | |
1da177e4 LT |
1452 | ntracks = 0; |
1453 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, | |
1454 | (char *)&toc->hdr, | |
1455 | sizeof(struct atapi_toc_header) + | |
1456 | (ntracks + 1) * | |
1457 | sizeof(struct atapi_toc_entry), | |
1458 | sense); | |
cdf6000d | 1459 | if (stat) |
1da177e4 | 1460 | return stat; |
cdf6000d | 1461 | |
570f89ea | 1462 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) { |
fc99856a AB |
1463 | toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT); |
1464 | toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT); | |
cdf6000d | 1465 | } else { |
1da177e4 LT |
1466 | toc->hdr.first_track = CDROM_LEADOUT; |
1467 | toc->hdr.last_track = CDROM_LEADOUT; | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | if (stat) | |
1472 | return stat; | |
1473 | ||
7eb43fd2 | 1474 | toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length); |
1da177e4 | 1475 | |
570f89ea | 1476 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) { |
fc99856a AB |
1477 | toc->hdr.first_track = bcd2bin(toc->hdr.first_track); |
1478 | toc->hdr.last_track = bcd2bin(toc->hdr.last_track); | |
1da177e4 | 1479 | } |
1da177e4 | 1480 | |
cdf6000d | 1481 | for (i = 0; i <= ntracks; i++) { |
570f89ea BP |
1482 | if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) { |
1483 | if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) | |
fc99856a | 1484 | toc->ent[i].track = bcd2bin(toc->ent[i].track); |
1da177e4 LT |
1485 | msf_from_bcd(&toc->ent[i].addr.msf); |
1486 | } | |
9ce70fb2 PC |
1487 | toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute, |
1488 | toc->ent[i].addr.msf.second, | |
1489 | toc->ent[i].addr.msf.frame); | |
1da177e4 LT |
1490 | } |
1491 | ||
1da177e4 | 1492 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
5a3ea3b4 | 1493 | /* read the multisession information */ |
1da177e4 LT |
1494 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
1495 | sizeof(ms_tmp), sense); | |
2a91f3e5 JJ |
1496 | if (stat) |
1497 | return stat; | |
1da177e4 LT |
1498 | |
1499 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); | |
1500 | } else { | |
e5e076a3 BP |
1501 | ms_tmp.hdr.last_track = CDROM_LEADOUT; |
1502 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track; | |
1da177e4 LT |
1503 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
1504 | } | |
1505 | ||
570f89ea | 1506 | if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) { |
5a3ea3b4 | 1507 | /* re-read multisession information using MSF format */ |
1da177e4 LT |
1508 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
1509 | sizeof(ms_tmp), sense); | |
1510 | if (stat) | |
1511 | return stat; | |
1512 | ||
9ce70fb2 | 1513 | msf_from_bcd(&ms_tmp.ent.addr.msf); |
1da177e4 | 1514 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
9ce70fb2 | 1515 | ms_tmp.ent.addr.msf.second, |
1da177e4 LT |
1516 | ms_tmp.ent.addr.msf.frame); |
1517 | } | |
1da177e4 LT |
1518 | |
1519 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); | |
1520 | ||
5a3ea3b4 | 1521 | /* now try to get the total cdrom capacity */ |
1da177e4 LT |
1522 | stat = cdrom_get_last_written(cdi, &last_written); |
1523 | if (!stat && (last_written > toc->capacity)) { | |
1524 | toc->capacity = last_written; | |
1525 | set_capacity(info->disk, toc->capacity * sectors_per_frame); | |
dbe217af | 1526 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
1da177e4 LT |
1527 | } |
1528 | ||
1529 | /* Remember that we've read this stuff. */ | |
570f89ea | 1530 | drive->atapi_flags |= IDE_AFLAG_TOC_VALID; |
1da177e4 LT |
1531 | |
1532 | return 0; | |
1533 | } | |
1534 | ||
17802998 | 1535 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
9235e68b EP |
1536 | { |
1537 | struct cdrom_info *info = drive->driver_data; | |
1538 | struct cdrom_device_info *cdi = &info->devinfo; | |
1539 | struct packet_command cgc; | |
455d80a9 | 1540 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
9235e68b | 1541 | |
fc8323f7 BP |
1542 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1543 | ||
570f89ea | 1544 | if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0) |
455d80a9 | 1545 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
9235e68b | 1546 | |
455d80a9 | 1547 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
5a3ea3b4 BP |
1548 | do { |
1549 | /* we seem to get stat=0x01,err=0x00 the first time (??) */ | |
9235e68b EP |
1550 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
1551 | if (!stat) | |
1552 | break; | |
1553 | } while (--attempts); | |
1554 | return stat; | |
1555 | } | |
1556 | ||
17802998 | 1557 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
9235e68b | 1558 | { |
4fe67178 | 1559 | struct cdrom_info *cd = drive->driver_data; |
481c8c64 BZ |
1560 | u16 curspeed, maxspeed; |
1561 | ||
fc8323f7 BP |
1562 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1563 | ||
570f89ea | 1564 | if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) { |
141d3b27 HH |
1565 | curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]); |
1566 | maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]); | |
9235e68b | 1567 | } else { |
141d3b27 HH |
1568 | curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]); |
1569 | maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]); | |
9235e68b | 1570 | } |
481c8c64 | 1571 | |
71b429ca BP |
1572 | ide_debug_log(IDE_DBG_PROBE, "%s: curspeed: %u, maxspeed: %u\n", |
1573 | __func__, curspeed, maxspeed); | |
1574 | ||
2bc4cf2d BZ |
1575 | cd->current_speed = (curspeed + (176/2)) / 176; |
1576 | cd->max_speed = (maxspeed + (176/2)) / 176; | |
9235e68b EP |
1577 | } |
1578 | ||
20e7f7ef BZ |
1579 | #define IDE_CD_CAPABILITIES \ |
1580 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ | |
1581 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ | |
1582 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ | |
1583 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ | |
1584 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) | |
1da177e4 | 1585 | |
1da177e4 LT |
1586 | static struct cdrom_device_ops ide_cdrom_dops = { |
1587 | .open = ide_cdrom_open_real, | |
1588 | .release = ide_cdrom_release_real, | |
1589 | .drive_status = ide_cdrom_drive_status, | |
1590 | .media_changed = ide_cdrom_check_media_change_real, | |
1591 | .tray_move = ide_cdrom_tray_move, | |
1592 | .lock_door = ide_cdrom_lock_door, | |
1593 | .select_speed = ide_cdrom_select_speed, | |
1594 | .get_last_session = ide_cdrom_get_last_session, | |
1595 | .get_mcn = ide_cdrom_get_mcn, | |
1596 | .reset = ide_cdrom_reset, | |
1597 | .audio_ioctl = ide_cdrom_audio_ioctl, | |
20e7f7ef | 1598 | .capability = IDE_CD_CAPABILITIES, |
1da177e4 LT |
1599 | .generic_packet = ide_cdrom_packet, |
1600 | }; | |
1601 | ||
9ce70fb2 | 1602 | static int ide_cdrom_register(ide_drive_t *drive, int nslots) |
1da177e4 LT |
1603 | { |
1604 | struct cdrom_info *info = drive->driver_data; | |
1605 | struct cdrom_device_info *devinfo = &info->devinfo; | |
1606 | ||
fc8323f7 BP |
1607 | ide_debug_log(IDE_DBG_PROBE, "Call %s, nslots: %d\n", __func__, nslots); |
1608 | ||
1da177e4 | 1609 | devinfo->ops = &ide_cdrom_dops; |
2bc4cf2d | 1610 | devinfo->speed = info->current_speed; |
1da177e4 | 1611 | devinfo->capacity = nslots; |
2a91f3e5 | 1612 | devinfo->handle = drive; |
1da177e4 | 1613 | strcpy(devinfo->name, drive->name); |
1da177e4 | 1614 | |
570f89ea | 1615 | if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT) |
3cbd814e BZ |
1616 | devinfo->mask |= CDC_SELECT_SPEED; |
1617 | ||
1da177e4 LT |
1618 | devinfo->disk = info->disk; |
1619 | return register_cdrom(devinfo); | |
1620 | } | |
1621 | ||
e5e076a3 | 1622 | static int ide_cdrom_probe_capabilities(ide_drive_t *drive) |
1da177e4 | 1623 | { |
4fe67178 BZ |
1624 | struct cdrom_info *cd = drive->driver_data; |
1625 | struct cdrom_device_info *cdi = &cd->devinfo; | |
455d80a9 BZ |
1626 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
1627 | mechtype_t mechtype; | |
1da177e4 LT |
1628 | int nslots = 1; |
1629 | ||
fc8323f7 BP |
1630 | ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->media: 0x%x, " |
1631 | "drive->atapi_flags: 0x%lx\n", __func__, drive->media, | |
1632 | drive->atapi_flags); | |
1633 | ||
3f1b86d8 BZ |
1634 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
1635 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | | |
1636 | CDC_MO_DRIVE | CDC_RAM); | |
1637 | ||
1da177e4 | 1638 | if (drive->media == ide_optical) { |
3f1b86d8 | 1639 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
fc8323f7 | 1640 | printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n", |
83c8565d | 1641 | drive->name); |
1da177e4 LT |
1642 | return nslots; |
1643 | } | |
1644 | ||
570f89ea BP |
1645 | if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) { |
1646 | drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT; | |
3f1b86d8 | 1647 | cdi->mask &= ~CDC_PLAY_AUDIO; |
1da177e4 LT |
1648 | return nslots; |
1649 | } | |
1650 | ||
1651 | /* | |
5a3ea3b4 BP |
1652 | * We have to cheat a little here. the packet will eventually be queued |
1653 | * with ide_cdrom_packet(), which extracts the drive from cdi->handle. | |
1654 | * Since this device hasn't been registered with the Uniform layer yet, | |
1655 | * it can't do this. Same goes for cdi->ops. | |
1da177e4 | 1656 | */ |
2a91f3e5 | 1657 | cdi->handle = drive; |
1da177e4 LT |
1658 | cdi->ops = &ide_cdrom_dops; |
1659 | ||
455d80a9 | 1660 | if (ide_cdrom_get_capabilities(drive, buf)) |
1da177e4 LT |
1661 | return 0; |
1662 | ||
455d80a9 | 1663 | if ((buf[8 + 6] & 0x01) == 0) |
42619d35 | 1664 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
455d80a9 | 1665 | if (buf[8 + 6] & 0x08) |
570f89ea | 1666 | drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT; |
455d80a9 | 1667 | if (buf[8 + 3] & 0x01) |
3f1b86d8 | 1668 | cdi->mask &= ~CDC_CD_R; |
455d80a9 | 1669 | if (buf[8 + 3] & 0x02) |
3f1b86d8 | 1670 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
455d80a9 | 1671 | if (buf[8 + 2] & 0x38) |
3f1b86d8 | 1672 | cdi->mask &= ~CDC_DVD; |
455d80a9 | 1673 | if (buf[8 + 3] & 0x20) |
3f1b86d8 | 1674 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
455d80a9 | 1675 | if (buf[8 + 3] & 0x10) |
3f1b86d8 | 1676 | cdi->mask &= ~CDC_DVD_R; |
570f89ea | 1677 | if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK)) |
3f1b86d8 | 1678 | cdi->mask &= ~CDC_PLAY_AUDIO; |
455d80a9 BZ |
1679 | |
1680 | mechtype = buf[8 + 6] >> 5; | |
f20f2586 BP |
1681 | if (mechtype == mechtype_caddy || |
1682 | mechtype == mechtype_popup || | |
1683 | (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE)) | |
3f1b86d8 | 1684 | cdi->mask |= CDC_CLOSE_TRAY; |
1da177e4 | 1685 | |
1da177e4 | 1686 | if (cdi->sanyo_slot > 0) { |
3f1b86d8 | 1687 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 | 1688 | nslots = 3; |
cdf6000d BZ |
1689 | } else if (mechtype == mechtype_individual_changer || |
1690 | mechtype == mechtype_cartridge_changer) { | |
2609d06d BZ |
1691 | nslots = cdrom_number_of_slots(cdi); |
1692 | if (nslots > 1) | |
3f1b86d8 | 1693 | cdi->mask &= ~CDC_SELECT_DISC; |
1da177e4 LT |
1694 | } |
1695 | ||
455d80a9 | 1696 | ide_cdrom_update_speed(drive, buf); |
4fe67178 | 1697 | |
fc8323f7 | 1698 | printk(KERN_INFO PFX "%s: ATAPI", drive->name); |
4fe67178 BZ |
1699 | |
1700 | /* don't print speed if the drive reported 0 */ | |
2bc4cf2d BZ |
1701 | if (cd->max_speed) |
1702 | printk(KERN_CONT " %dX", cd->max_speed); | |
4fe67178 | 1703 | |
3f1b86d8 | 1704 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
1da177e4 | 1705 | |
3f1b86d8 BZ |
1706 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
1707 | printk(KERN_CONT " DVD%s%s", | |
1708 | (cdi->mask & CDC_DVD_R) ? "" : "-R", | |
419a5b67 | 1709 | (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM"); |
1da177e4 | 1710 | |
3f1b86d8 BZ |
1711 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
1712 | printk(KERN_CONT " CD%s%s", | |
1713 | (cdi->mask & CDC_CD_R) ? "" : "-R", | |
1714 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); | |
1da177e4 | 1715 | |
3f1b86d8 BZ |
1716 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
1717 | printk(KERN_CONT " changer w/%d slots", nslots); | |
1718 | else | |
1719 | printk(KERN_CONT " drive"); | |
1da177e4 | 1720 | |
fc8323f7 BP |
1721 | printk(KERN_CONT ", %dkB Cache\n", |
1722 | be16_to_cpup((__be16 *)&buf[8 + 12])); | |
1da177e4 LT |
1723 | |
1724 | return nslots; | |
1725 | } | |
1726 | ||
5a3ea3b4 | 1727 | /* standard prep_rq_fn that builds 10 byte cmds */ |
165125e1 | 1728 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
1da177e4 LT |
1729 | { |
1730 | int hard_sect = queue_hardsect_size(q); | |
1731 | long block = (long)rq->hard_sector / (hard_sect >> 9); | |
1732 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); | |
1733 | ||
d34c87e4 | 1734 | memset(rq->cmd, 0, BLK_MAX_CDB); |
1da177e4 LT |
1735 | |
1736 | if (rq_data_dir(rq) == READ) | |
1737 | rq->cmd[0] = GPCMD_READ_10; | |
1738 | else | |
1739 | rq->cmd[0] = GPCMD_WRITE_10; | |
1740 | ||
1741 | /* | |
1742 | * fill in lba | |
1743 | */ | |
1744 | rq->cmd[2] = (block >> 24) & 0xff; | |
1745 | rq->cmd[3] = (block >> 16) & 0xff; | |
1746 | rq->cmd[4] = (block >> 8) & 0xff; | |
1747 | rq->cmd[5] = block & 0xff; | |
1748 | ||
1749 | /* | |
1750 | * and transfer length | |
1751 | */ | |
1752 | rq->cmd[7] = (blocks >> 8) & 0xff; | |
1753 | rq->cmd[8] = blocks & 0xff; | |
1754 | rq->cmd_len = 10; | |
1755 | return BLKPREP_OK; | |
1756 | } | |
1757 | ||
1758 | /* | |
1759 | * Most of the SCSI commands are supported directly by ATAPI devices. | |
1760 | * This transform handles the few exceptions. | |
1761 | */ | |
1762 | static int ide_cdrom_prep_pc(struct request *rq) | |
1763 | { | |
1764 | u8 *c = rq->cmd; | |
1765 | ||
5a3ea3b4 | 1766 | /* transform 6-byte read/write commands to the 10-byte version */ |
1da177e4 LT |
1767 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
1768 | c[8] = c[4]; | |
1769 | c[5] = c[3]; | |
1770 | c[4] = c[2]; | |
1771 | c[3] = c[1] & 0x1f; | |
1772 | c[2] = 0; | |
1773 | c[1] &= 0xe0; | |
1774 | c[0] += (READ_10 - READ_6); | |
1775 | rq->cmd_len = 10; | |
1776 | return BLKPREP_OK; | |
1777 | } | |
1778 | ||
1779 | /* | |
1780 | * it's silly to pretend we understand 6-byte sense commands, just | |
1781 | * reject with ILLEGAL_REQUEST and the caller should take the | |
1782 | * appropriate action | |
1783 | */ | |
1784 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { | |
1785 | rq->errors = ILLEGAL_REQUEST; | |
1786 | return BLKPREP_KILL; | |
1787 | } | |
9ce70fb2 | 1788 | |
1da177e4 LT |
1789 | return BLKPREP_OK; |
1790 | } | |
1791 | ||
165125e1 | 1792 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
1da177e4 | 1793 | { |
4aff5e23 | 1794 | if (blk_fs_request(rq)) |
1da177e4 | 1795 | return ide_cdrom_prep_fs(q, rq); |
4aff5e23 | 1796 | else if (blk_pc_request(rq)) |
1da177e4 LT |
1797 | return ide_cdrom_prep_pc(rq); |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | ||
e59724c7 BZ |
1802 | struct cd_list_entry { |
1803 | const char *id_model; | |
1804 | const char *id_firmware; | |
1805 | unsigned int cd_flags; | |
1806 | }; | |
1807 | ||
5e657a9e BP |
1808 | #ifdef CONFIG_IDE_PROC_FS |
1809 | static sector_t ide_cdrom_capacity(ide_drive_t *drive) | |
1810 | { | |
1811 | unsigned long capacity, sectors_per_frame; | |
1812 | ||
1813 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) | |
1814 | return 0; | |
1815 | ||
1816 | return capacity * sectors_per_frame; | |
1817 | } | |
1818 | ||
e5e076a3 BP |
1819 | static int proc_idecd_read_capacity(char *page, char **start, off_t off, |
1820 | int count, int *eof, void *data) | |
5e657a9e BP |
1821 | { |
1822 | ide_drive_t *drive = data; | |
1823 | int len; | |
1824 | ||
1825 | len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive)); | |
1826 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1827 | } | |
1828 | ||
1829 | static ide_proc_entry_t idecd_proc[] = { | |
1830 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, | |
1831 | { NULL, 0, NULL, NULL } | |
1832 | }; | |
1833 | ||
97100fc8 | 1834 | ide_devset_rw_flag(dsc_overlap, IDE_DFLAG_DSC_OVERLAP); |
8185d5aa | 1835 | |
92f1f8fd EO |
1836 | static const struct ide_proc_devset idecd_settings[] = { |
1837 | IDE_PROC_DEVSET(dsc_overlap, 0, 1), | |
1838 | { 0 }, | |
8185d5aa | 1839 | }; |
79cb3803 BZ |
1840 | |
1841 | static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive) | |
1842 | { | |
1843 | return idecd_proc; | |
1844 | } | |
1845 | ||
1846 | static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive) | |
1847 | { | |
1848 | return idecd_settings; | |
1849 | } | |
5e657a9e BP |
1850 | #endif |
1851 | ||
e59724c7 BZ |
1852 | static const struct cd_list_entry ide_cd_quirks_list[] = { |
1853 | /* Limit transfer size per interrupt. */ | |
570f89ea BP |
1854 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES }, |
1855 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES }, | |
e59724c7 | 1856 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ |
570f89ea | 1857 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT }, |
e59724c7 | 1858 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ |
570f89ea BP |
1859 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD | |
1860 | IDE_AFLAG_PRE_ATAPI12, }, | |
e59724c7 | 1861 | /* Vertos 300, some versions of this drive like to talk BCD. */ |
570f89ea | 1862 | { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, }, |
e59724c7 | 1863 | /* Vertos 600 ESD. */ |
570f89ea | 1864 | { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, }, |
e59724c7 BZ |
1865 | /* |
1866 | * Sanyo 3 CD changer uses a non-standard command for CD changing | |
1867 | * (by default standard ATAPI support for CD changers is used). | |
1868 | */ | |
570f89ea BP |
1869 | { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD }, |
1870 | { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD }, | |
1871 | { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD }, | |
e59724c7 | 1872 | /* Stingray 8X CD-ROM. */ |
570f89ea | 1873 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 }, |
e59724c7 BZ |
1874 | /* |
1875 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length | |
1876 | * mode sense page capabilities size, but older drives break. | |
1877 | */ | |
570f89ea BP |
1878 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE }, |
1879 | { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE }, | |
e59724c7 | 1880 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ |
570f89ea | 1881 | { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS }, |
e59724c7 BZ |
1882 | /* |
1883 | * Some drives used by Apple don't advertise audio play | |
1884 | * but they do support reading TOC & audio datas. | |
1885 | */ | |
570f89ea BP |
1886 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
1887 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, | |
1888 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, | |
1889 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, | |
1890 | { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, | |
f3e85ee7 | 1891 | { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK }, |
f20f2586 | 1892 | { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE }, |
64c2eae2 | 1893 | { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE }, |
e59724c7 BZ |
1894 | { NULL, NULL, 0 } |
1895 | }; | |
1896 | ||
4dde4492 | 1897 | static unsigned int ide_cd_flags(u16 *id) |
e59724c7 BZ |
1898 | { |
1899 | const struct cd_list_entry *cle = ide_cd_quirks_list; | |
1900 | ||
1901 | while (cle->id_model) { | |
4dde4492 | 1902 | if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 && |
e59724c7 | 1903 | (cle->id_firmware == NULL || |
4dde4492 | 1904 | strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware))) |
e59724c7 BZ |
1905 | return cle->cd_flags; |
1906 | cle++; | |
1907 | } | |
1908 | ||
1909 | return 0; | |
1910 | } | |
1911 | ||
e5e076a3 | 1912 | static int ide_cdrom_setup(ide_drive_t *drive) |
1da177e4 | 1913 | { |
4fe67178 BZ |
1914 | struct cdrom_info *cd = drive->driver_data; |
1915 | struct cdrom_device_info *cdi = &cd->devinfo; | |
4dde4492 BZ |
1916 | u16 *id = drive->id; |
1917 | char *fw_rev = (char *)&id[ATA_ID_FW_REV]; | |
1da177e4 LT |
1918 | int nslots; |
1919 | ||
fc8323f7 BP |
1920 | ide_debug_log(IDE_DBG_PROBE, "Call %s\n", __func__); |
1921 | ||
1da177e4 LT |
1922 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); |
1923 | blk_queue_dma_alignment(drive->queue, 31); | |
e5318b53 | 1924 | blk_queue_update_dma_pad(drive->queue, 15); |
1da177e4 LT |
1925 | drive->queue->unplug_delay = (1 * HZ) / 1000; |
1926 | if (!drive->queue->unplug_delay) | |
1927 | drive->queue->unplug_delay = 1; | |
1928 | ||
fe11edfa BZ |
1929 | drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED; |
1930 | drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id); | |
1da177e4 | 1931 | |
570f89ea | 1932 | if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) && |
4dde4492 | 1933 | fw_rev[4] == '1' && fw_rev[6] <= '2') |
570f89ea BP |
1934 | drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD | |
1935 | IDE_AFLAG_TOCADDR_AS_BCD); | |
1936 | else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) && | |
4dde4492 | 1937 | fw_rev[4] == '1' && fw_rev[6] <= '2') |
570f89ea BP |
1938 | drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD; |
1939 | else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD) | |
5a3ea3b4 BP |
1940 | /* 3 => use CD in slot 0 */ |
1941 | cdi->sanyo_slot = 3; | |
1da177e4 | 1942 | |
9ce70fb2 | 1943 | nslots = ide_cdrom_probe_capabilities(drive); |
1da177e4 | 1944 | |
5a3ea3b4 | 1945 | /* set correct block size */ |
1da177e4 LT |
1946 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); |
1947 | ||
97100fc8 BZ |
1948 | if (drive->next != drive) |
1949 | drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP; | |
1950 | else | |
1951 | drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; | |
1da177e4 LT |
1952 | |
1953 | if (ide_cdrom_register(drive, nslots)) { | |
fc8323f7 | 1954 | printk(KERN_ERR PFX "%s: %s failed to register device with the" |
83c8565d | 1955 | " cdrom driver.\n", drive->name, __func__); |
4fe67178 | 1956 | cd->devinfo.handle = NULL; |
1da177e4 LT |
1957 | return 1; |
1958 | } | |
1e874f44 BZ |
1959 | |
1960 | ide_proc_register_driver(drive, cd->driver); | |
1da177e4 LT |
1961 | return 0; |
1962 | } | |
1963 | ||
4031bbe4 | 1964 | static void ide_cd_remove(ide_drive_t *drive) |
1da177e4 LT |
1965 | { |
1966 | struct cdrom_info *info = drive->driver_data; | |
1967 | ||
fc8323f7 BP |
1968 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1969 | ||
7662d046 | 1970 | ide_proc_unregister_driver(drive, info->driver); |
1da177e4 LT |
1971 | |
1972 | del_gendisk(info->disk); | |
1973 | ||
1974 | ide_cd_put(info); | |
1da177e4 LT |
1975 | } |
1976 | ||
1977 | static void ide_cd_release(struct kref *kref) | |
1978 | { | |
5aeddf90 | 1979 | struct cdrom_info *info = to_ide_drv(kref, cdrom_info); |
1da177e4 LT |
1980 | struct cdrom_device_info *devinfo = &info->devinfo; |
1981 | ide_drive_t *drive = info->drive; | |
1982 | struct gendisk *g = info->disk; | |
1983 | ||
fc8323f7 BP |
1984 | ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__); |
1985 | ||
6044ec88 | 1986 | kfree(info->toc); |
0a0c4114 AM |
1987 | if (devinfo->handle == drive) |
1988 | unregister_cdrom(devinfo); | |
97100fc8 | 1989 | drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; |
1da177e4 LT |
1990 | drive->driver_data = NULL; |
1991 | blk_queue_prep_rq(drive->queue, NULL); | |
1992 | g->private_data = NULL; | |
1993 | put_disk(g); | |
1994 | kfree(info); | |
1995 | } | |
1996 | ||
4031bbe4 | 1997 | static int ide_cd_probe(ide_drive_t *); |
1da177e4 | 1998 | |
1da177e4 | 1999 | static ide_driver_t ide_cdrom_driver = { |
8604affd | 2000 | .gen_driver = { |
4ef3b8f4 | 2001 | .owner = THIS_MODULE, |
8604affd BZ |
2002 | .name = "ide-cdrom", |
2003 | .bus = &ide_bus_type, | |
8604affd | 2004 | }, |
4031bbe4 RK |
2005 | .probe = ide_cd_probe, |
2006 | .remove = ide_cd_remove, | |
1da177e4 | 2007 | .version = IDECD_VERSION, |
99384aea | 2008 | .do_request = ide_cd_do_request, |
1da177e4 LT |
2009 | .end_request = ide_end_request, |
2010 | .error = __ide_error, | |
7662d046 | 2011 | #ifdef CONFIG_IDE_PROC_FS |
79cb3803 BZ |
2012 | .proc_entries = ide_cd_proc_entries, |
2013 | .proc_devsets = ide_cd_proc_devsets, | |
7662d046 | 2014 | #endif |
1da177e4 LT |
2015 | }; |
2016 | ||
488ca606 | 2017 | static int idecd_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 2018 | { |
488ca606 | 2019 | struct cdrom_info *info = ide_cd_get(bdev->bd_disk); |
1da177e4 LT |
2020 | int rc = -ENOMEM; |
2021 | ||
9ce70fb2 | 2022 | if (!info) |
1da177e4 LT |
2023 | return -ENXIO; |
2024 | ||
488ca606 | 2025 | rc = cdrom_open(&info->devinfo, bdev, mode); |
1da177e4 LT |
2026 | |
2027 | if (rc < 0) | |
2028 | ide_cd_put(info); | |
2029 | ||
2030 | return rc; | |
2031 | } | |
2032 | ||
488ca606 | 2033 | static int idecd_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 2034 | { |
5aeddf90 | 2035 | struct cdrom_info *info = ide_drv_g(disk, cdrom_info); |
1da177e4 | 2036 | |
488ca606 | 2037 | cdrom_release(&info->devinfo, mode); |
1da177e4 LT |
2038 | |
2039 | ide_cd_put(info); | |
2040 | ||
2041 | return 0; | |
2042 | } | |
2043 | ||
6a2900b6 CH |
2044 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
2045 | { | |
2046 | struct packet_command cgc; | |
2047 | char buffer[16]; | |
2048 | int stat; | |
2049 | char spindown; | |
2050 | ||
2051 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) | |
2052 | return -EFAULT; | |
2053 | ||
2054 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2055 | ||
2056 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2057 | if (stat) | |
2058 | return stat; | |
2059 | ||
2060 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); | |
2061 | return cdrom_mode_select(cdi, &cgc); | |
2062 | } | |
2063 | ||
2064 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) | |
2065 | { | |
2066 | struct packet_command cgc; | |
2067 | char buffer[16]; | |
2068 | int stat; | |
9ce70fb2 | 2069 | char spindown; |
6a2900b6 CH |
2070 | |
2071 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); | |
2072 | ||
2073 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); | |
2074 | if (stat) | |
2075 | return stat; | |
2076 | ||
2077 | spindown = buffer[11] & 0x0f; | |
9ce70fb2 | 2078 | if (copy_to_user((void __user *)arg, &spindown, sizeof(char))) |
6a2900b6 CH |
2079 | return -EFAULT; |
2080 | return 0; | |
2081 | } | |
2082 | ||
488ca606 | 2083 | static int idecd_ioctl(struct block_device *bdev, fmode_t mode, |
1da177e4 LT |
2084 | unsigned int cmd, unsigned long arg) |
2085 | { | |
5aeddf90 | 2086 | struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info); |
1da177e4 LT |
2087 | int err; |
2088 | ||
6a2900b6 | 2089 | switch (cmd) { |
9ce70fb2 | 2090 | case CDROMSETSPINDOWN: |
6a2900b6 | 2091 | return idecd_set_spindown(&info->devinfo, arg); |
9ce70fb2 | 2092 | case CDROMGETSPINDOWN: |
6a2900b6 CH |
2093 | return idecd_get_spindown(&info->devinfo, arg); |
2094 | default: | |
2095 | break; | |
9ce70fb2 | 2096 | } |
6a2900b6 | 2097 | |
1bddd9e6 | 2098 | err = generic_ide_ioctl(info->drive, bdev, cmd, arg); |
1da177e4 | 2099 | if (err == -EINVAL) |
488ca606 | 2100 | err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg); |
1da177e4 LT |
2101 | |
2102 | return err; | |
2103 | } | |
2104 | ||
2105 | static int idecd_media_changed(struct gendisk *disk) | |
2106 | { | |
5aeddf90 | 2107 | struct cdrom_info *info = ide_drv_g(disk, cdrom_info); |
1da177e4 LT |
2108 | return cdrom_media_changed(&info->devinfo); |
2109 | } | |
2110 | ||
2111 | static int idecd_revalidate_disk(struct gendisk *disk) | |
2112 | { | |
5aeddf90 | 2113 | struct cdrom_info *info = ide_drv_g(disk, cdrom_info); |
1da177e4 | 2114 | struct request_sense sense; |
139c829d BZ |
2115 | |
2116 | ide_cd_read_toc(info->drive, &sense); | |
2117 | ||
1da177e4 LT |
2118 | return 0; |
2119 | } | |
2120 | ||
2121 | static struct block_device_operations idecd_ops = { | |
9ce70fb2 | 2122 | .owner = THIS_MODULE, |
488ca606 AV |
2123 | .open = idecd_open, |
2124 | .release = idecd_release, | |
2125 | .locked_ioctl = idecd_ioctl, | |
9ce70fb2 PC |
2126 | .media_changed = idecd_media_changed, |
2127 | .revalidate_disk = idecd_revalidate_disk | |
1da177e4 LT |
2128 | }; |
2129 | ||
5a3ea3b4 | 2130 | /* module options */ |
9ce70fb2 | 2131 | static char *ignore; |
1da177e4 | 2132 | module_param(ignore, charp, 0400); |
35d9b17f BP |
2133 | |
2134 | static unsigned long debug_mask; | |
2135 | module_param(debug_mask, ulong, 0644); | |
2136 | ||
1da177e4 LT |
2137 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); |
2138 | ||
4031bbe4 | 2139 | static int ide_cd_probe(ide_drive_t *drive) |
1da177e4 LT |
2140 | { |
2141 | struct cdrom_info *info; | |
2142 | struct gendisk *g; | |
2143 | struct request_sense sense; | |
2144 | ||
fc8323f7 BP |
2145 | ide_debug_log(IDE_DBG_PROBE, "Call %s, drive->driver_req: %s, " |
2146 | "drive->media: 0x%x\n", __func__, drive->driver_req, | |
2147 | drive->media); | |
2148 | ||
1da177e4 LT |
2149 | if (!strstr("ide-cdrom", drive->driver_req)) |
2150 | goto failed; | |
2a924662 | 2151 | |
1da177e4 LT |
2152 | if (drive->media != ide_cdrom && drive->media != ide_optical) |
2153 | goto failed; | |
2a924662 | 2154 | |
1da177e4 LT |
2155 | /* skip drives that we were told to ignore */ |
2156 | if (ignore != NULL) { | |
2157 | if (strstr(ignore, drive->name)) { | |
fc8323f7 | 2158 | printk(KERN_INFO PFX "ignoring drive %s\n", |
83c8565d | 2159 | drive->name); |
1da177e4 LT |
2160 | goto failed; |
2161 | } | |
2162 | } | |
35d9b17f BP |
2163 | |
2164 | drive->debug_mask = debug_mask; | |
2165 | ||
f5e3c2fa | 2166 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
1da177e4 | 2167 | if (info == NULL) { |
fc8323f7 | 2168 | printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n", |
83c8565d | 2169 | drive->name); |
1da177e4 LT |
2170 | goto failed; |
2171 | } | |
2172 | ||
2173 | g = alloc_disk(1 << PARTN_BITS); | |
2174 | if (!g) | |
2175 | goto out_free_cd; | |
2176 | ||
2177 | ide_init_disk(g, drive); | |
2178 | ||
1da177e4 LT |
2179 | kref_init(&info->kref); |
2180 | ||
2181 | info->drive = drive; | |
2182 | info->driver = &ide_cdrom_driver; | |
2183 | info->disk = g; | |
2184 | ||
2185 | g->private_data = &info->driver; | |
2186 | ||
2187 | drive->driver_data = info; | |
2188 | ||
1da177e4 | 2189 | g->minors = 1; |
1da177e4 LT |
2190 | g->driverfs_dev = &drive->gendev; |
2191 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; | |
2192 | if (ide_cdrom_setup(drive)) { | |
05017db3 | 2193 | ide_cd_release(&info->kref); |
1da177e4 LT |
2194 | goto failed; |
2195 | } | |
1da177e4 | 2196 | |
139c829d | 2197 | ide_cd_read_toc(drive, &sense); |
1da177e4 LT |
2198 | g->fops = &idecd_ops; |
2199 | g->flags |= GENHD_FL_REMOVABLE; | |
2200 | add_disk(g); | |
2201 | return 0; | |
2202 | ||
1da177e4 LT |
2203 | out_free_cd: |
2204 | kfree(info); | |
2205 | failed: | |
8604affd | 2206 | return -ENODEV; |
1da177e4 LT |
2207 | } |
2208 | ||
2209 | static void __exit ide_cdrom_exit(void) | |
2210 | { | |
8604affd | 2211 | driver_unregister(&ide_cdrom_driver.gen_driver); |
1da177e4 | 2212 | } |
17514e8a BZ |
2213 | |
2214 | static int __init ide_cdrom_init(void) | |
1da177e4 | 2215 | { |
fc8323f7 | 2216 | printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n"); |
8604affd | 2217 | return driver_register(&ide_cdrom_driver.gen_driver); |
1da177e4 LT |
2218 | } |
2219 | ||
263756ec | 2220 | MODULE_ALIAS("ide:*m-cdrom*"); |
972560fb | 2221 | MODULE_ALIAS("ide-cd"); |
1da177e4 LT |
2222 | module_init(ide_cdrom_init); |
2223 | module_exit(ide_cdrom_exit); | |
2224 | MODULE_LICENSE("GPL"); |