Commit | Line | Data |
---|---|---|
17802998 BZ |
1 | /* |
2 | * cdrom.c IOCTLs handling for ide-cd driver. | |
3 | * | |
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 | */ | |
8 | ||
9 | #include <linux/kernel.h> | |
10 | #include <linux/cdrom.h> | |
5a0e3ad6 | 11 | #include <linux/gfp.h> |
17802998 | 12 | #include <linux/ide.h> |
f9afd18b | 13 | #include <scsi/scsi.h> |
17802998 BZ |
14 | |
15 | #include "ide-cd.h" | |
16 | ||
f9afd18b BP |
17 | /**************************************************************************** |
18 | * Other driver requests (open, close, check media change). | |
19 | */ | |
20 | int ide_cdrom_open_real(struct cdrom_device_info *cdi, int purpose) | |
21 | { | |
22 | return 0; | |
23 | } | |
24 | ||
25 | /* | |
26 | * Close down the device. Invalidate all cached blocks. | |
27 | */ | |
28 | void ide_cdrom_release_real(struct cdrom_device_info *cdi) | |
29 | { | |
30 | ide_drive_t *drive = cdi->handle; | |
f9afd18b BP |
31 | |
32 | if (!cdi->use_count) | |
570f89ea | 33 | drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID; |
f9afd18b BP |
34 | } |
35 | ||
36 | /* | |
37 | * add logic to try GET_EVENT command first to check for media and tray | |
38 | * status. this should be supported by newer cd-r/w and all DVD etc | |
39 | * drives | |
40 | */ | |
41 | int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr) | |
42 | { | |
43 | ide_drive_t *drive = cdi->handle; | |
44 | struct media_event_desc med; | |
45 | struct request_sense sense; | |
46 | int stat; | |
47 | ||
48 | if (slot_nr != CDSL_CURRENT) | |
49 | return -EINVAL; | |
50 | ||
51 | stat = cdrom_check_status(drive, &sense); | |
52 | if (!stat || sense.sense_key == UNIT_ATTENTION) | |
53 | return CDS_DISC_OK; | |
54 | ||
55 | if (!cdrom_get_media_event(cdi, &med)) { | |
56 | if (med.media_present) | |
57 | return CDS_DISC_OK; | |
58 | else if (med.door_open) | |
59 | return CDS_TRAY_OPEN; | |
60 | else | |
61 | return CDS_NO_DISC; | |
62 | } | |
63 | ||
64 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 | |
65 | && sense.ascq == 0x04) | |
66 | return CDS_DISC_OK; | |
67 | ||
68 | /* | |
69 | * If not using Mt Fuji extended media tray reports, | |
70 | * just return TRAY_OPEN since ATAPI doesn't provide | |
71 | * any other way to detect this... | |
72 | */ | |
73 | if (sense.sense_key == NOT_READY) { | |
74 | if (sense.asc == 0x3a && sense.ascq == 1) | |
75 | return CDS_NO_DISC; | |
76 | else | |
77 | return CDS_TRAY_OPEN; | |
78 | } | |
79 | return CDS_DRIVE_NOT_READY; | |
80 | } | |
81 | ||
7eec77a1 TH |
82 | /* |
83 | * ide-cd always generates media changed event if media is missing, which | |
84 | * makes it impossible to use for proper event reporting, so disk->events | |
85 | * is cleared to 0 and the following function is used only to trigger | |
86 | * revalidation and never propagated to userland. | |
87 | */ | |
5b03a1b1 TH |
88 | unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi, |
89 | unsigned int clearing, int slot_nr) | |
f9afd18b BP |
90 | { |
91 | ide_drive_t *drive = cdi->handle; | |
f9afd18b BP |
92 | int retval; |
93 | ||
94 | if (slot_nr == CDSL_CURRENT) { | |
95 | (void) cdrom_check_status(drive, NULL); | |
fe11edfa BZ |
96 | retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0; |
97 | drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED; | |
5b03a1b1 | 98 | return retval ? DISK_EVENT_MEDIA_CHANGE : 0; |
f9afd18b | 99 | } else { |
5b03a1b1 | 100 | return 0; |
f9afd18b BP |
101 | } |
102 | } | |
103 | ||
104 | /* Eject the disk if EJECTFLAG is 0. | |
105 | If EJECTFLAG is 1, try to reload the disk. */ | |
106 | static | |
107 | int cdrom_eject(ide_drive_t *drive, int ejectflag, | |
108 | struct request_sense *sense) | |
109 | { | |
110 | struct cdrom_info *cd = drive->driver_data; | |
111 | struct cdrom_device_info *cdi = &cd->devinfo; | |
f9afd18b | 112 | char loej = 0x02; |
5f828546 | 113 | unsigned char cmd[BLK_MAX_CDB]; |
f9afd18b | 114 | |
570f89ea | 115 | if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag) |
f9afd18b BP |
116 | return -EDRIVE_CANT_DO_THIS; |
117 | ||
118 | /* reload fails on some drives, if the tray is locked */ | |
570f89ea | 119 | if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag) |
f9afd18b BP |
120 | return 0; |
121 | ||
f9afd18b BP |
122 | /* only tell drive to close tray if open, if it can do that */ |
123 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) | |
124 | loej = 0; | |
125 | ||
5f828546 FT |
126 | memset(cmd, 0, BLK_MAX_CDB); |
127 | ||
128 | cmd[0] = GPCMD_START_STOP_UNIT; | |
129 | cmd[4] = loej | (ejectflag != 0); | |
f9afd18b | 130 | |
1a677aba | 131 | return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, 0); |
f9afd18b BP |
132 | } |
133 | ||
134 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ | |
135 | static | |
136 | int ide_cd_lockdoor(ide_drive_t *drive, int lockflag, | |
137 | struct request_sense *sense) | |
138 | { | |
f9afd18b | 139 | struct request_sense my_sense; |
f9afd18b BP |
140 | int stat; |
141 | ||
142 | if (sense == NULL) | |
143 | sense = &my_sense; | |
144 | ||
145 | /* If the drive cannot lock the door, just pretend. */ | |
42619d35 | 146 | if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) { |
f9afd18b BP |
147 | stat = 0; |
148 | } else { | |
5f828546 FT |
149 | unsigned char cmd[BLK_MAX_CDB]; |
150 | ||
151 | memset(cmd, 0, BLK_MAX_CDB); | |
152 | ||
153 | cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; | |
154 | cmd[4] = lockflag ? 1 : 0; | |
155 | ||
1a677aba | 156 | stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, |
5f828546 | 157 | sense, 0, 0); |
f9afd18b BP |
158 | } |
159 | ||
160 | /* If we got an illegal field error, the drive | |
161 | probably cannot lock the door. */ | |
162 | if (stat != 0 && | |
163 | sense->sense_key == ILLEGAL_REQUEST && | |
164 | (sense->asc == 0x24 || sense->asc == 0x20)) { | |
165 | printk(KERN_ERR "%s: door locking not supported\n", | |
166 | drive->name); | |
42619d35 | 167 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
f9afd18b BP |
168 | stat = 0; |
169 | } | |
170 | ||
171 | /* no medium, that's alright. */ | |
172 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) | |
173 | stat = 0; | |
174 | ||
175 | if (stat == 0) { | |
176 | if (lockflag) | |
570f89ea | 177 | drive->atapi_flags |= IDE_AFLAG_DOOR_LOCKED; |
f9afd18b | 178 | else |
570f89ea | 179 | drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED; |
f9afd18b BP |
180 | } |
181 | ||
182 | return stat; | |
183 | } | |
184 | ||
185 | int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position) | |
186 | { | |
187 | ide_drive_t *drive = cdi->handle; | |
188 | struct request_sense sense; | |
189 | ||
190 | if (position) { | |
191 | int stat = ide_cd_lockdoor(drive, 0, &sense); | |
192 | ||
193 | if (stat) | |
194 | return stat; | |
195 | } | |
196 | ||
197 | return cdrom_eject(drive, !position, &sense); | |
198 | } | |
199 | ||
17802998 BZ |
200 | int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock) |
201 | { | |
202 | ide_drive_t *drive = cdi->handle; | |
203 | ||
204 | return ide_cd_lockdoor(drive, lock, NULL); | |
205 | } | |
206 | ||
207 | /* | |
208 | * ATAPI devices are free to select the speed you request or any slower | |
209 | * rate. :-( Requesting too fast a speed will _not_ produce an error. | |
210 | */ | |
211 | int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed) | |
212 | { | |
213 | ide_drive_t *drive = cdi->handle; | |
214 | struct cdrom_info *cd = drive->driver_data; | |
17802998 BZ |
215 | struct request_sense sense; |
216 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; | |
217 | int stat; | |
5f828546 | 218 | unsigned char cmd[BLK_MAX_CDB]; |
17802998 BZ |
219 | |
220 | if (speed == 0) | |
221 | speed = 0xffff; /* set to max */ | |
222 | else | |
223 | speed *= 177; /* Nx to kbytes/s */ | |
224 | ||
5f828546 FT |
225 | memset(cmd, 0, BLK_MAX_CDB); |
226 | ||
227 | cmd[0] = GPCMD_SET_SPEED; | |
17802998 | 228 | /* Read Drive speed in kbytes/second MSB/LSB */ |
5f828546 FT |
229 | cmd[2] = (speed >> 8) & 0xff; |
230 | cmd[3] = speed & 0xff; | |
17802998 BZ |
231 | if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) != |
232 | (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) { | |
233 | /* Write Drive speed in kbytes/second MSB/LSB */ | |
5f828546 FT |
234 | cmd[4] = (speed >> 8) & 0xff; |
235 | cmd[5] = speed & 0xff; | |
17802998 BZ |
236 | } |
237 | ||
1a677aba | 238 | stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0); |
17802998 BZ |
239 | |
240 | if (!ide_cdrom_get_capabilities(drive, buf)) { | |
241 | ide_cdrom_update_speed(drive, buf); | |
242 | cdi->speed = cd->current_speed; | |
243 | } | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | int ide_cdrom_get_last_session(struct cdrom_device_info *cdi, | |
249 | struct cdrom_multisession *ms_info) | |
250 | { | |
251 | struct atapi_toc *toc; | |
252 | ide_drive_t *drive = cdi->handle; | |
253 | struct cdrom_info *info = drive->driver_data; | |
254 | struct request_sense sense; | |
255 | int ret; | |
256 | ||
570f89ea | 257 | if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 || !info->toc) { |
17802998 BZ |
258 | ret = ide_cd_read_toc(drive, &sense); |
259 | if (ret) | |
260 | return ret; | |
261 | } | |
262 | ||
263 | toc = info->toc; | |
264 | ms_info->addr.lba = toc->last_session_lba; | |
265 | ms_info->xa_flag = toc->xa_flag; | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | int ide_cdrom_get_mcn(struct cdrom_device_info *cdi, | |
271 | struct cdrom_mcn *mcn_info) | |
272 | { | |
273 | ide_drive_t *drive = cdi->handle; | |
274 | int stat, mcnlen; | |
17802998 | 275 | char buf[24]; |
5f828546 FT |
276 | unsigned char cmd[BLK_MAX_CDB]; |
277 | unsigned len = sizeof(buf); | |
17802998 | 278 | |
5f828546 | 279 | memset(cmd, 0, BLK_MAX_CDB); |
17802998 | 280 | |
5f828546 FT |
281 | cmd[0] = GPCMD_READ_SUBCHANNEL; |
282 | cmd[1] = 2; /* MSF addressing */ | |
283 | cmd[2] = 0x40; /* request subQ data */ | |
284 | cmd[3] = 2; /* format */ | |
285 | cmd[8] = len; | |
17802998 | 286 | |
5f828546 | 287 | stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0); |
17802998 BZ |
288 | if (stat) |
289 | return stat; | |
290 | ||
291 | mcnlen = sizeof(mcn_info->medium_catalog_number) - 1; | |
292 | memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen); | |
293 | mcn_info->medium_catalog_number[mcnlen] = '\0'; | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
298 | int ide_cdrom_reset(struct cdrom_device_info *cdi) | |
299 | { | |
300 | ide_drive_t *drive = cdi->handle; | |
301 | struct cdrom_info *cd = drive->driver_data; | |
302 | struct request_sense sense; | |
0ef4c4db | 303 | struct request *rq; |
17802998 BZ |
304 | int ret; |
305 | ||
71baba4b | 306 | rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM); |
4f8c9510 | 307 | rq->cmd_type = REQ_TYPE_DRV_PRIV; |
0ef4c4db FT |
308 | rq->cmd_flags = REQ_QUIET; |
309 | ret = blk_execute_rq(drive->queue, cd->disk, rq, 0); | |
310 | blk_put_request(rq); | |
17802998 BZ |
311 | /* |
312 | * A reset will unlock the door. If it was previously locked, | |
313 | * lock it again. | |
314 | */ | |
570f89ea | 315 | if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) |
17802998 BZ |
316 | (void)ide_cd_lockdoor(drive, 1, &sense); |
317 | ||
318 | return ret; | |
319 | } | |
320 | ||
321 | static int ide_cd_get_toc_entry(ide_drive_t *drive, int track, | |
322 | struct atapi_toc_entry **ent) | |
323 | { | |
324 | struct cdrom_info *info = drive->driver_data; | |
325 | struct atapi_toc *toc = info->toc; | |
326 | int ntracks; | |
327 | ||
328 | /* | |
329 | * don't serve cached data, if the toc isn't valid | |
330 | */ | |
570f89ea | 331 | if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0) |
17802998 BZ |
332 | return -EINVAL; |
333 | ||
334 | /* Check validity of requested track number. */ | |
335 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
336 | ||
337 | if (toc->hdr.first_track == CDROM_LEADOUT) | |
338 | ntracks = 0; | |
339 | ||
340 | if (track == CDROM_LEADOUT) | |
341 | *ent = &toc->ent[ntracks]; | |
342 | else if (track < toc->hdr.first_track || track > toc->hdr.last_track) | |
343 | return -EINVAL; | |
344 | else | |
345 | *ent = &toc->ent[track - toc->hdr.first_track]; | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
350 | static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg) | |
351 | { | |
352 | struct cdrom_ti *ti = arg; | |
353 | struct atapi_toc_entry *first_toc, *last_toc; | |
354 | unsigned long lba_start, lba_end; | |
355 | int stat; | |
17802998 | 356 | struct request_sense sense; |
5f828546 | 357 | unsigned char cmd[BLK_MAX_CDB]; |
17802998 BZ |
358 | |
359 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc); | |
360 | if (stat) | |
361 | return stat; | |
362 | ||
363 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc); | |
364 | if (stat) | |
365 | return stat; | |
366 | ||
367 | if (ti->cdti_trk1 != CDROM_LEADOUT) | |
368 | ++last_toc; | |
369 | lba_start = first_toc->addr.lba; | |
370 | lba_end = last_toc->addr.lba; | |
371 | ||
372 | if (lba_end <= lba_start) | |
373 | return -EINVAL; | |
374 | ||
5f828546 | 375 | memset(cmd, 0, BLK_MAX_CDB); |
17802998 | 376 | |
5f828546 FT |
377 | cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
378 | lba_to_msf(lba_start, &cmd[3], &cmd[4], &cmd[5]); | |
379 | lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]); | |
17802998 | 380 | |
1a677aba | 381 | return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0); |
17802998 BZ |
382 | } |
383 | ||
384 | static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg) | |
385 | { | |
386 | struct cdrom_info *cd = drive->driver_data; | |
387 | struct cdrom_tochdr *tochdr = arg; | |
388 | struct atapi_toc *toc; | |
389 | int stat; | |
390 | ||
391 | /* Make sure our saved TOC is valid. */ | |
392 | stat = ide_cd_read_toc(drive, NULL); | |
393 | if (stat) | |
394 | return stat; | |
395 | ||
396 | toc = cd->toc; | |
397 | tochdr->cdth_trk0 = toc->hdr.first_track; | |
398 | tochdr->cdth_trk1 = toc->hdr.last_track; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg) | |
404 | { | |
405 | struct cdrom_tocentry *tocentry = arg; | |
406 | struct atapi_toc_entry *toce; | |
407 | int stat; | |
408 | ||
409 | stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce); | |
410 | if (stat) | |
411 | return stat; | |
412 | ||
413 | tocentry->cdte_ctrl = toce->control; | |
414 | tocentry->cdte_adr = toce->adr; | |
415 | if (tocentry->cdte_format == CDROM_MSF) { | |
416 | lba_to_msf(toce->addr.lba, | |
417 | &tocentry->cdte_addr.msf.minute, | |
418 | &tocentry->cdte_addr.msf.second, | |
419 | &tocentry->cdte_addr.msf.frame); | |
420 | } else | |
421 | tocentry->cdte_addr.lba = toce->addr.lba; | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
426 | int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi, | |
427 | unsigned int cmd, void *arg) | |
428 | { | |
429 | ide_drive_t *drive = cdi->handle; | |
430 | ||
431 | switch (cmd) { | |
432 | /* | |
433 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since | |
434 | * atapi doesn't support it | |
435 | */ | |
436 | case CDROMPLAYTRKIND: | |
437 | return ide_cd_fake_play_trkind(drive, arg); | |
438 | case CDROMREADTOCHDR: | |
439 | return ide_cd_read_tochdr(drive, arg); | |
440 | case CDROMREADTOCENTRY: | |
441 | return ide_cd_read_tocentry(drive, arg); | |
442 | default: | |
443 | return -EINVAL; | |
444 | } | |
445 | } | |
f9afd18b BP |
446 | |
447 | /* the generic packet interface to cdrom.c */ | |
448 | int ide_cdrom_packet(struct cdrom_device_info *cdi, | |
449 | struct packet_command *cgc) | |
450 | { | |
f9afd18b | 451 | ide_drive_t *drive = cdi->handle; |
5f828546 FT |
452 | unsigned int flags = 0; |
453 | unsigned len = cgc->buflen; | |
f9afd18b BP |
454 | |
455 | if (cgc->timeout <= 0) | |
456 | cgc->timeout = ATAPI_WAIT_PC; | |
457 | ||
458 | /* here we queue the commands from the uniform CD-ROM | |
459 | layer. the packet must be complete, as we do not | |
460 | touch it at all. */ | |
b348487f BZ |
461 | |
462 | if (cgc->data_direction == CGC_DATA_WRITE) | |
7b6d91da | 463 | flags |= REQ_WRITE; |
b348487f | 464 | |
f9afd18b BP |
465 | if (cgc->sense) |
466 | memset(cgc->sense, 0, sizeof(struct request_sense)); | |
f9afd18b BP |
467 | |
468 | if (cgc->quiet) | |
5f828546 | 469 | flags |= REQ_QUIET; |
f9afd18b | 470 | |
5f828546 FT |
471 | cgc->stat = ide_cd_queue_pc(drive, cgc->cmd, |
472 | cgc->data_direction == CGC_DATA_WRITE, | |
473 | cgc->buffer, &len, | |
474 | cgc->sense, cgc->timeout, flags); | |
f9afd18b | 475 | if (!cgc->stat) |
5f828546 | 476 | cgc->buflen -= len; |
f9afd18b BP |
477 | return cgc->stat; |
478 | } |