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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> | |
11 | #include <linux/ide.h> | |
f9afd18b | 12 | #include <scsi/scsi.h> |
17802998 BZ |
13 | |
14 | #include "ide-cd.h" | |
15 | ||
f9afd18b BP |
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 | struct cdrom_info *cd = drive->driver_data; | |
31 | ||
32 | if (!cdi->use_count) | |
33 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; | |
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 | ||
82 | int ide_cdrom_check_media_change_real(struct cdrom_device_info *cdi, | |
83 | int slot_nr) | |
84 | { | |
85 | ide_drive_t *drive = cdi->handle; | |
86 | struct cdrom_info *cd = drive->driver_data; | |
87 | int retval; | |
88 | ||
89 | if (slot_nr == CDSL_CURRENT) { | |
90 | (void) cdrom_check_status(drive, NULL); | |
91 | retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0; | |
92 | cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED; | |
93 | return retval; | |
94 | } else { | |
95 | return -EINVAL; | |
96 | } | |
97 | } | |
98 | ||
99 | /* Eject the disk if EJECTFLAG is 0. | |
100 | If EJECTFLAG is 1, try to reload the disk. */ | |
101 | static | |
102 | int cdrom_eject(ide_drive_t *drive, int ejectflag, | |
103 | struct request_sense *sense) | |
104 | { | |
105 | struct cdrom_info *cd = drive->driver_data; | |
106 | struct cdrom_device_info *cdi = &cd->devinfo; | |
107 | struct request req; | |
108 | char loej = 0x02; | |
109 | ||
110 | if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag) | |
111 | return -EDRIVE_CANT_DO_THIS; | |
112 | ||
113 | /* reload fails on some drives, if the tray is locked */ | |
114 | if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag) | |
115 | return 0; | |
116 | ||
117 | ide_cd_init_rq(drive, &req); | |
118 | ||
119 | /* only tell drive to close tray if open, if it can do that */ | |
120 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) | |
121 | loej = 0; | |
122 | ||
123 | req.sense = sense; | |
124 | req.cmd[0] = GPCMD_START_STOP_UNIT; | |
125 | req.cmd[4] = loej | (ejectflag != 0); | |
126 | ||
127 | return ide_cd_queue_pc(drive, &req); | |
128 | } | |
129 | ||
130 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ | |
131 | static | |
132 | int ide_cd_lockdoor(ide_drive_t *drive, int lockflag, | |
133 | struct request_sense *sense) | |
134 | { | |
135 | struct cdrom_info *cd = drive->driver_data; | |
136 | struct request_sense my_sense; | |
137 | struct request req; | |
138 | int stat; | |
139 | ||
140 | if (sense == NULL) | |
141 | sense = &my_sense; | |
142 | ||
143 | /* If the drive cannot lock the door, just pretend. */ | |
144 | if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) { | |
145 | stat = 0; | |
146 | } else { | |
147 | ide_cd_init_rq(drive, &req); | |
148 | req.sense = sense; | |
149 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; | |
150 | req.cmd[4] = lockflag ? 1 : 0; | |
151 | stat = ide_cd_queue_pc(drive, &req); | |
152 | } | |
153 | ||
154 | /* If we got an illegal field error, the drive | |
155 | probably cannot lock the door. */ | |
156 | if (stat != 0 && | |
157 | sense->sense_key == ILLEGAL_REQUEST && | |
158 | (sense->asc == 0x24 || sense->asc == 0x20)) { | |
159 | printk(KERN_ERR "%s: door locking not supported\n", | |
160 | drive->name); | |
161 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; | |
162 | stat = 0; | |
163 | } | |
164 | ||
165 | /* no medium, that's alright. */ | |
166 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) | |
167 | stat = 0; | |
168 | ||
169 | if (stat == 0) { | |
170 | if (lockflag) | |
171 | cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED; | |
172 | else | |
173 | cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED; | |
174 | } | |
175 | ||
176 | return stat; | |
177 | } | |
178 | ||
179 | int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position) | |
180 | { | |
181 | ide_drive_t *drive = cdi->handle; | |
182 | struct request_sense sense; | |
183 | ||
184 | if (position) { | |
185 | int stat = ide_cd_lockdoor(drive, 0, &sense); | |
186 | ||
187 | if (stat) | |
188 | return stat; | |
189 | } | |
190 | ||
191 | return cdrom_eject(drive, !position, &sense); | |
192 | } | |
193 | ||
17802998 BZ |
194 | int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock) |
195 | { | |
196 | ide_drive_t *drive = cdi->handle; | |
197 | ||
198 | return ide_cd_lockdoor(drive, lock, NULL); | |
199 | } | |
200 | ||
201 | /* | |
202 | * ATAPI devices are free to select the speed you request or any slower | |
203 | * rate. :-( Requesting too fast a speed will _not_ produce an error. | |
204 | */ | |
205 | int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed) | |
206 | { | |
207 | ide_drive_t *drive = cdi->handle; | |
208 | struct cdrom_info *cd = drive->driver_data; | |
209 | struct request rq; | |
210 | struct request_sense sense; | |
211 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; | |
212 | int stat; | |
213 | ||
214 | ide_cd_init_rq(drive, &rq); | |
215 | ||
216 | rq.sense = &sense; | |
217 | ||
218 | if (speed == 0) | |
219 | speed = 0xffff; /* set to max */ | |
220 | else | |
221 | speed *= 177; /* Nx to kbytes/s */ | |
222 | ||
223 | rq.cmd[0] = GPCMD_SET_SPEED; | |
224 | /* Read Drive speed in kbytes/second MSB/LSB */ | |
225 | rq.cmd[2] = (speed >> 8) & 0xff; | |
226 | rq.cmd[3] = speed & 0xff; | |
227 | if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) != | |
228 | (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) { | |
229 | /* Write Drive speed in kbytes/second MSB/LSB */ | |
230 | rq.cmd[4] = (speed >> 8) & 0xff; | |
231 | rq.cmd[5] = speed & 0xff; | |
232 | } | |
233 | ||
234 | stat = ide_cd_queue_pc(drive, &rq); | |
235 | ||
236 | if (!ide_cdrom_get_capabilities(drive, buf)) { | |
237 | ide_cdrom_update_speed(drive, buf); | |
238 | cdi->speed = cd->current_speed; | |
239 | } | |
240 | ||
241 | return 0; | |
242 | } | |
243 | ||
244 | int ide_cdrom_get_last_session(struct cdrom_device_info *cdi, | |
245 | struct cdrom_multisession *ms_info) | |
246 | { | |
247 | struct atapi_toc *toc; | |
248 | ide_drive_t *drive = cdi->handle; | |
249 | struct cdrom_info *info = drive->driver_data; | |
250 | struct request_sense sense; | |
251 | int ret; | |
252 | ||
253 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0 || !info->toc) { | |
254 | ret = ide_cd_read_toc(drive, &sense); | |
255 | if (ret) | |
256 | return ret; | |
257 | } | |
258 | ||
259 | toc = info->toc; | |
260 | ms_info->addr.lba = toc->last_session_lba; | |
261 | ms_info->xa_flag = toc->xa_flag; | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | int ide_cdrom_get_mcn(struct cdrom_device_info *cdi, | |
267 | struct cdrom_mcn *mcn_info) | |
268 | { | |
269 | ide_drive_t *drive = cdi->handle; | |
270 | int stat, mcnlen; | |
271 | struct request rq; | |
272 | char buf[24]; | |
273 | ||
274 | ide_cd_init_rq(drive, &rq); | |
275 | ||
276 | rq.data = buf; | |
277 | rq.data_len = sizeof(buf); | |
278 | ||
279 | rq.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
280 | rq.cmd[1] = 2; /* MSF addressing */ | |
281 | rq.cmd[2] = 0x40; /* request subQ data */ | |
282 | rq.cmd[3] = 2; /* format */ | |
283 | rq.cmd[8] = sizeof(buf); | |
284 | ||
285 | stat = ide_cd_queue_pc(drive, &rq); | |
286 | if (stat) | |
287 | return stat; | |
288 | ||
289 | mcnlen = sizeof(mcn_info->medium_catalog_number) - 1; | |
290 | memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen); | |
291 | mcn_info->medium_catalog_number[mcnlen] = '\0'; | |
292 | ||
293 | return 0; | |
294 | } | |
295 | ||
296 | int ide_cdrom_reset(struct cdrom_device_info *cdi) | |
297 | { | |
298 | ide_drive_t *drive = cdi->handle; | |
299 | struct cdrom_info *cd = drive->driver_data; | |
300 | struct request_sense sense; | |
301 | struct request req; | |
302 | int ret; | |
303 | ||
304 | ide_cd_init_rq(drive, &req); | |
305 | req.cmd_type = REQ_TYPE_SPECIAL; | |
306 | req.cmd_flags = REQ_QUIET; | |
307 | ret = ide_do_drive_cmd(drive, &req, ide_wait); | |
308 | ||
309 | /* | |
310 | * A reset will unlock the door. If it was previously locked, | |
311 | * lock it again. | |
312 | */ | |
313 | if (cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) | |
314 | (void)ide_cd_lockdoor(drive, 1, &sense); | |
315 | ||
316 | return ret; | |
317 | } | |
318 | ||
319 | static int ide_cd_get_toc_entry(ide_drive_t *drive, int track, | |
320 | struct atapi_toc_entry **ent) | |
321 | { | |
322 | struct cdrom_info *info = drive->driver_data; | |
323 | struct atapi_toc *toc = info->toc; | |
324 | int ntracks; | |
325 | ||
326 | /* | |
327 | * don't serve cached data, if the toc isn't valid | |
328 | */ | |
329 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0) | |
330 | return -EINVAL; | |
331 | ||
332 | /* Check validity of requested track number. */ | |
333 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
334 | ||
335 | if (toc->hdr.first_track == CDROM_LEADOUT) | |
336 | ntracks = 0; | |
337 | ||
338 | if (track == CDROM_LEADOUT) | |
339 | *ent = &toc->ent[ntracks]; | |
340 | else if (track < toc->hdr.first_track || track > toc->hdr.last_track) | |
341 | return -EINVAL; | |
342 | else | |
343 | *ent = &toc->ent[track - toc->hdr.first_track]; | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
348 | static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg) | |
349 | { | |
350 | struct cdrom_ti *ti = arg; | |
351 | struct atapi_toc_entry *first_toc, *last_toc; | |
352 | unsigned long lba_start, lba_end; | |
353 | int stat; | |
354 | struct request rq; | |
355 | struct request_sense sense; | |
356 | ||
357 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc); | |
358 | if (stat) | |
359 | return stat; | |
360 | ||
361 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc); | |
362 | if (stat) | |
363 | return stat; | |
364 | ||
365 | if (ti->cdti_trk1 != CDROM_LEADOUT) | |
366 | ++last_toc; | |
367 | lba_start = first_toc->addr.lba; | |
368 | lba_end = last_toc->addr.lba; | |
369 | ||
370 | if (lba_end <= lba_start) | |
371 | return -EINVAL; | |
372 | ||
373 | ide_cd_init_rq(drive, &rq); | |
374 | ||
375 | rq.sense = &sense; | |
376 | rq.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
377 | lba_to_msf(lba_start, &rq.cmd[3], &rq.cmd[4], &rq.cmd[5]); | |
378 | lba_to_msf(lba_end - 1, &rq.cmd[6], &rq.cmd[7], &rq.cmd[8]); | |
379 | ||
380 | return ide_cd_queue_pc(drive, &rq); | |
381 | } | |
382 | ||
383 | static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg) | |
384 | { | |
385 | struct cdrom_info *cd = drive->driver_data; | |
386 | struct cdrom_tochdr *tochdr = arg; | |
387 | struct atapi_toc *toc; | |
388 | int stat; | |
389 | ||
390 | /* Make sure our saved TOC is valid. */ | |
391 | stat = ide_cd_read_toc(drive, NULL); | |
392 | if (stat) | |
393 | return stat; | |
394 | ||
395 | toc = cd->toc; | |
396 | tochdr->cdth_trk0 = toc->hdr.first_track; | |
397 | tochdr->cdth_trk1 = toc->hdr.last_track; | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg) | |
403 | { | |
404 | struct cdrom_tocentry *tocentry = arg; | |
405 | struct atapi_toc_entry *toce; | |
406 | int stat; | |
407 | ||
408 | stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce); | |
409 | if (stat) | |
410 | return stat; | |
411 | ||
412 | tocentry->cdte_ctrl = toce->control; | |
413 | tocentry->cdte_adr = toce->adr; | |
414 | if (tocentry->cdte_format == CDROM_MSF) { | |
415 | lba_to_msf(toce->addr.lba, | |
416 | &tocentry->cdte_addr.msf.minute, | |
417 | &tocentry->cdte_addr.msf.second, | |
418 | &tocentry->cdte_addr.msf.frame); | |
419 | } else | |
420 | tocentry->cdte_addr.lba = toce->addr.lba; | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi, | |
426 | unsigned int cmd, void *arg) | |
427 | { | |
428 | ide_drive_t *drive = cdi->handle; | |
429 | ||
430 | switch (cmd) { | |
431 | /* | |
432 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since | |
433 | * atapi doesn't support it | |
434 | */ | |
435 | case CDROMPLAYTRKIND: | |
436 | return ide_cd_fake_play_trkind(drive, arg); | |
437 | case CDROMREADTOCHDR: | |
438 | return ide_cd_read_tochdr(drive, arg); | |
439 | case CDROMREADTOCENTRY: | |
440 | return ide_cd_read_tocentry(drive, arg); | |
441 | default: | |
442 | return -EINVAL; | |
443 | } | |
444 | } | |
f9afd18b BP |
445 | |
446 | /* the generic packet interface to cdrom.c */ | |
447 | int ide_cdrom_packet(struct cdrom_device_info *cdi, | |
448 | struct packet_command *cgc) | |
449 | { | |
450 | struct request req; | |
451 | ide_drive_t *drive = cdi->handle; | |
452 | ||
453 | if (cgc->timeout <= 0) | |
454 | cgc->timeout = ATAPI_WAIT_PC; | |
455 | ||
456 | /* here we queue the commands from the uniform CD-ROM | |
457 | layer. the packet must be complete, as we do not | |
458 | touch it at all. */ | |
459 | ide_cd_init_rq(drive, &req); | |
b348487f BZ |
460 | |
461 | if (cgc->data_direction == CGC_DATA_WRITE) | |
462 | req.cmd_flags |= REQ_RW; | |
463 | ||
f9afd18b BP |
464 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); |
465 | if (cgc->sense) | |
466 | memset(cgc->sense, 0, sizeof(struct request_sense)); | |
467 | req.data = cgc->buffer; | |
468 | req.data_len = cgc->buflen; | |
469 | req.timeout = cgc->timeout; | |
470 | ||
471 | if (cgc->quiet) | |
472 | req.cmd_flags |= REQ_QUIET; | |
473 | ||
474 | req.sense = cgc->sense; | |
475 | cgc->stat = ide_cd_queue_pc(drive, &req); | |
476 | if (!cgc->stat) | |
477 | cgc->buflen -= req.data_len; | |
478 | return cgc->stat; | |
479 | } |