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