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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
17802998 BZ |
2 | /* |
3 | * cdrom.c IOCTLs handling for ide-cd driver. | |
4 | * | |
5 | * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov> | |
6 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> | |
7 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> | |
8 | */ | |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/cdrom.h> | |
5a0e3ad6 | 12 | #include <linux/gfp.h> |
17802998 | 13 | #include <linux/ide.h> |
f9afd18b | 14 | #include <scsi/scsi.h> |
17802998 BZ |
15 | |
16 | #include "ide-cd.h" | |
17 | ||
f9afd18b BP |
18 | /**************************************************************************** |
19 | * Other driver requests (open, close, check media change). | |
20 | */ | |
21 | int ide_cdrom_open_real(struct cdrom_device_info *cdi, int purpose) | |
22 | { | |
23 | return 0; | |
24 | } | |
25 | ||
26 | /* | |
27 | * Close down the device. Invalidate all cached blocks. | |
28 | */ | |
29 | void ide_cdrom_release_real(struct cdrom_device_info *cdi) | |
30 | { | |
31 | ide_drive_t *drive = cdi->handle; | |
f9afd18b BP |
32 | |
33 | if (!cdi->use_count) | |
570f89ea | 34 | drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID; |
f9afd18b BP |
35 | } |
36 | ||
37 | /* | |
38 | * add logic to try GET_EVENT command first to check for media and tray | |
39 | * status. this should be supported by newer cd-r/w and all DVD etc | |
40 | * drives | |
41 | */ | |
42 | int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr) | |
43 | { | |
44 | ide_drive_t *drive = cdi->handle; | |
45 | struct media_event_desc med; | |
46 | struct request_sense sense; | |
47 | int stat; | |
48 | ||
49 | if (slot_nr != CDSL_CURRENT) | |
50 | return -EINVAL; | |
51 | ||
52 | stat = cdrom_check_status(drive, &sense); | |
53 | if (!stat || sense.sense_key == UNIT_ATTENTION) | |
54 | return CDS_DISC_OK; | |
55 | ||
56 | if (!cdrom_get_media_event(cdi, &med)) { | |
57 | if (med.media_present) | |
58 | return CDS_DISC_OK; | |
59 | else if (med.door_open) | |
60 | return CDS_TRAY_OPEN; | |
61 | else | |
62 | return CDS_NO_DISC; | |
63 | } | |
64 | ||
65 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 | |
66 | && sense.ascq == 0x04) | |
67 | return CDS_DISC_OK; | |
68 | ||
69 | /* | |
70 | * If not using Mt Fuji extended media tray reports, | |
71 | * just return TRAY_OPEN since ATAPI doesn't provide | |
72 | * any other way to detect this... | |
73 | */ | |
74 | if (sense.sense_key == NOT_READY) { | |
75 | if (sense.asc == 0x3a && sense.ascq == 1) | |
76 | return CDS_NO_DISC; | |
77 | else | |
78 | return CDS_TRAY_OPEN; | |
79 | } | |
80 | return CDS_DRIVE_NOT_READY; | |
81 | } | |
82 | ||
7eec77a1 TH |
83 | /* |
84 | * ide-cd always generates media changed event if media is missing, which | |
85 | * makes it impossible to use for proper event reporting, so disk->events | |
86 | * is cleared to 0 and the following function is used only to trigger | |
87 | * revalidation and never propagated to userland. | |
88 | */ | |
5b03a1b1 TH |
89 | unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi, |
90 | unsigned int clearing, int slot_nr) | |
f9afd18b BP |
91 | { |
92 | ide_drive_t *drive = cdi->handle; | |
f9afd18b BP |
93 | int retval; |
94 | ||
95 | if (slot_nr == CDSL_CURRENT) { | |
96 | (void) cdrom_check_status(drive, NULL); | |
fe11edfa BZ |
97 | retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0; |
98 | drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED; | |
5b03a1b1 | 99 | return retval ? DISK_EVENT_MEDIA_CHANGE : 0; |
f9afd18b | 100 | } else { |
5b03a1b1 | 101 | return 0; |
f9afd18b BP |
102 | } |
103 | } | |
104 | ||
105 | /* Eject the disk if EJECTFLAG is 0. | |
106 | If EJECTFLAG is 1, try to reload the disk. */ | |
107 | static | |
108 | int cdrom_eject(ide_drive_t *drive, int ejectflag, | |
109 | struct request_sense *sense) | |
110 | { | |
111 | struct cdrom_info *cd = drive->driver_data; | |
112 | struct cdrom_device_info *cdi = &cd->devinfo; | |
f9afd18b | 113 | char loej = 0x02; |
5f828546 | 114 | unsigned char cmd[BLK_MAX_CDB]; |
f9afd18b | 115 | |
570f89ea | 116 | if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag) |
f9afd18b BP |
117 | return -EDRIVE_CANT_DO_THIS; |
118 | ||
119 | /* reload fails on some drives, if the tray is locked */ | |
570f89ea | 120 | if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag) |
f9afd18b BP |
121 | return 0; |
122 | ||
f9afd18b BP |
123 | /* only tell drive to close tray if open, if it can do that */ |
124 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) | |
125 | loej = 0; | |
126 | ||
5f828546 FT |
127 | memset(cmd, 0, BLK_MAX_CDB); |
128 | ||
129 | cmd[0] = GPCMD_START_STOP_UNIT; | |
130 | cmd[4] = loej | (ejectflag != 0); | |
f9afd18b | 131 | |
1a677aba | 132 | return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, 0); |
f9afd18b BP |
133 | } |
134 | ||
135 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ | |
136 | static | |
137 | int ide_cd_lockdoor(ide_drive_t *drive, int lockflag, | |
138 | struct request_sense *sense) | |
139 | { | |
f9afd18b | 140 | struct request_sense my_sense; |
f9afd18b BP |
141 | int stat; |
142 | ||
143 | if (sense == NULL) | |
144 | sense = &my_sense; | |
145 | ||
146 | /* If the drive cannot lock the door, just pretend. */ | |
42619d35 | 147 | if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) { |
f9afd18b BP |
148 | stat = 0; |
149 | } else { | |
5f828546 FT |
150 | unsigned char cmd[BLK_MAX_CDB]; |
151 | ||
152 | memset(cmd, 0, BLK_MAX_CDB); | |
153 | ||
154 | cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; | |
155 | cmd[4] = lockflag ? 1 : 0; | |
156 | ||
1a677aba | 157 | stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, |
5f828546 | 158 | sense, 0, 0); |
f9afd18b BP |
159 | } |
160 | ||
161 | /* If we got an illegal field error, the drive | |
162 | probably cannot lock the door. */ | |
163 | if (stat != 0 && | |
164 | sense->sense_key == ILLEGAL_REQUEST && | |
165 | (sense->asc == 0x24 || sense->asc == 0x20)) { | |
166 | printk(KERN_ERR "%s: door locking not supported\n", | |
167 | drive->name); | |
42619d35 | 168 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
f9afd18b BP |
169 | stat = 0; |
170 | } | |
171 | ||
172 | /* no medium, that's alright. */ | |
173 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) | |
174 | stat = 0; | |
175 | ||
176 | if (stat == 0) { | |
177 | if (lockflag) | |
570f89ea | 178 | drive->atapi_flags |= IDE_AFLAG_DOOR_LOCKED; |
f9afd18b | 179 | else |
570f89ea | 180 | drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED; |
f9afd18b BP |
181 | } |
182 | ||
183 | return stat; | |
184 | } | |
185 | ||
186 | int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position) | |
187 | { | |
188 | ide_drive_t *drive = cdi->handle; | |
189 | struct request_sense sense; | |
190 | ||
191 | if (position) { | |
192 | int stat = ide_cd_lockdoor(drive, 0, &sense); | |
193 | ||
194 | if (stat) | |
195 | return stat; | |
196 | } | |
197 | ||
198 | return cdrom_eject(drive, !position, &sense); | |
199 | } | |
200 | ||
17802998 BZ |
201 | int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock) |
202 | { | |
203 | ide_drive_t *drive = cdi->handle; | |
204 | ||
205 | return ide_cd_lockdoor(drive, lock, NULL); | |
206 | } | |
207 | ||
208 | /* | |
209 | * ATAPI devices are free to select the speed you request or any slower | |
210 | * rate. :-( Requesting too fast a speed will _not_ produce an error. | |
211 | */ | |
212 | int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed) | |
213 | { | |
214 | ide_drive_t *drive = cdi->handle; | |
215 | struct cdrom_info *cd = drive->driver_data; | |
17802998 BZ |
216 | struct request_sense sense; |
217 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; | |
218 | int stat; | |
5f828546 | 219 | unsigned char cmd[BLK_MAX_CDB]; |
17802998 BZ |
220 | |
221 | if (speed == 0) | |
222 | speed = 0xffff; /* set to max */ | |
223 | else | |
224 | speed *= 177; /* Nx to kbytes/s */ | |
225 | ||
5f828546 FT |
226 | memset(cmd, 0, BLK_MAX_CDB); |
227 | ||
228 | cmd[0] = GPCMD_SET_SPEED; | |
17802998 | 229 | /* Read Drive speed in kbytes/second MSB/LSB */ |
5f828546 FT |
230 | cmd[2] = (speed >> 8) & 0xff; |
231 | cmd[3] = speed & 0xff; | |
17802998 BZ |
232 | if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) != |
233 | (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) { | |
234 | /* Write Drive speed in kbytes/second MSB/LSB */ | |
5f828546 FT |
235 | cmd[4] = (speed >> 8) & 0xff; |
236 | cmd[5] = speed & 0xff; | |
17802998 BZ |
237 | } |
238 | ||
1a677aba | 239 | stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0); |
17802998 BZ |
240 | |
241 | if (!ide_cdrom_get_capabilities(drive, buf)) { | |
242 | ide_cdrom_update_speed(drive, buf); | |
243 | cdi->speed = cd->current_speed; | |
244 | } | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | int ide_cdrom_get_last_session(struct cdrom_device_info *cdi, | |
250 | struct cdrom_multisession *ms_info) | |
251 | { | |
252 | struct atapi_toc *toc; | |
253 | ide_drive_t *drive = cdi->handle; | |
254 | struct cdrom_info *info = drive->driver_data; | |
255 | struct request_sense sense; | |
256 | int ret; | |
257 | ||
570f89ea | 258 | if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 || !info->toc) { |
17802998 BZ |
259 | ret = ide_cd_read_toc(drive, &sense); |
260 | if (ret) | |
261 | return ret; | |
262 | } | |
263 | ||
264 | toc = info->toc; | |
265 | ms_info->addr.lba = toc->last_session_lba; | |
266 | ms_info->xa_flag = toc->xa_flag; | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | int ide_cdrom_get_mcn(struct cdrom_device_info *cdi, | |
272 | struct cdrom_mcn *mcn_info) | |
273 | { | |
274 | ide_drive_t *drive = cdi->handle; | |
275 | int stat, mcnlen; | |
17802998 | 276 | char buf[24]; |
5f828546 FT |
277 | unsigned char cmd[BLK_MAX_CDB]; |
278 | unsigned len = sizeof(buf); | |
17802998 | 279 | |
5f828546 | 280 | memset(cmd, 0, BLK_MAX_CDB); |
17802998 | 281 | |
5f828546 FT |
282 | cmd[0] = GPCMD_READ_SUBCHANNEL; |
283 | cmd[1] = 2; /* MSF addressing */ | |
284 | cmd[2] = 0x40; /* request subQ data */ | |
285 | cmd[3] = 2; /* format */ | |
286 | cmd[8] = len; | |
17802998 | 287 | |
5f828546 | 288 | stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0); |
17802998 BZ |
289 | if (stat) |
290 | return stat; | |
291 | ||
292 | mcnlen = sizeof(mcn_info->medium_catalog_number) - 1; | |
293 | memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen); | |
294 | mcn_info->medium_catalog_number[mcnlen] = '\0'; | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
299 | int ide_cdrom_reset(struct cdrom_device_info *cdi) | |
300 | { | |
301 | ide_drive_t *drive = cdi->handle; | |
302 | struct cdrom_info *cd = drive->driver_data; | |
303 | struct request_sense sense; | |
0ef4c4db | 304 | struct request *rq; |
17802998 BZ |
305 | int ret; |
306 | ||
aebf526b | 307 | rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM); |
2f5a8e80 | 308 | ide_req(rq)->type = ATA_PRIV_MISC; |
e8064021 | 309 | rq->rq_flags = RQF_QUIET; |
b7819b92 | 310 | blk_execute_rq(drive->queue, cd->disk, rq, 0); |
17d5363b | 311 | ret = scsi_req(rq)->result ? -EIO : 0; |
0ef4c4db | 312 | blk_put_request(rq); |
17802998 BZ |
313 | /* |
314 | * A reset will unlock the door. If it was previously locked, | |
315 | * lock it again. | |
316 | */ | |
570f89ea | 317 | if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) |
17802998 BZ |
318 | (void)ide_cd_lockdoor(drive, 1, &sense); |
319 | ||
320 | return ret; | |
321 | } | |
322 | ||
323 | static int ide_cd_get_toc_entry(ide_drive_t *drive, int track, | |
324 | struct atapi_toc_entry **ent) | |
325 | { | |
326 | struct cdrom_info *info = drive->driver_data; | |
327 | struct atapi_toc *toc = info->toc; | |
328 | int ntracks; | |
329 | ||
330 | /* | |
331 | * don't serve cached data, if the toc isn't valid | |
332 | */ | |
570f89ea | 333 | if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0) |
17802998 BZ |
334 | return -EINVAL; |
335 | ||
336 | /* Check validity of requested track number. */ | |
337 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; | |
338 | ||
339 | if (toc->hdr.first_track == CDROM_LEADOUT) | |
340 | ntracks = 0; | |
341 | ||
342 | if (track == CDROM_LEADOUT) | |
343 | *ent = &toc->ent[ntracks]; | |
344 | else if (track < toc->hdr.first_track || track > toc->hdr.last_track) | |
345 | return -EINVAL; | |
346 | else | |
347 | *ent = &toc->ent[track - toc->hdr.first_track]; | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg) | |
353 | { | |
354 | struct cdrom_ti *ti = arg; | |
355 | struct atapi_toc_entry *first_toc, *last_toc; | |
356 | unsigned long lba_start, lba_end; | |
357 | int stat; | |
17802998 | 358 | struct request_sense sense; |
5f828546 | 359 | unsigned char cmd[BLK_MAX_CDB]; |
17802998 BZ |
360 | |
361 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc); | |
362 | if (stat) | |
363 | return stat; | |
364 | ||
365 | stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc); | |
366 | if (stat) | |
367 | return stat; | |
368 | ||
369 | if (ti->cdti_trk1 != CDROM_LEADOUT) | |
370 | ++last_toc; | |
371 | lba_start = first_toc->addr.lba; | |
372 | lba_end = last_toc->addr.lba; | |
373 | ||
374 | if (lba_end <= lba_start) | |
375 | return -EINVAL; | |
376 | ||
5f828546 | 377 | memset(cmd, 0, BLK_MAX_CDB); |
17802998 | 378 | |
5f828546 FT |
379 | cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
380 | lba_to_msf(lba_start, &cmd[3], &cmd[4], &cmd[5]); | |
381 | lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]); | |
17802998 | 382 | |
1a677aba | 383 | return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0); |
17802998 BZ |
384 | } |
385 | ||
386 | static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg) | |
387 | { | |
388 | struct cdrom_info *cd = drive->driver_data; | |
389 | struct cdrom_tochdr *tochdr = arg; | |
390 | struct atapi_toc *toc; | |
391 | int stat; | |
392 | ||
393 | /* Make sure our saved TOC is valid. */ | |
394 | stat = ide_cd_read_toc(drive, NULL); | |
395 | if (stat) | |
396 | return stat; | |
397 | ||
398 | toc = cd->toc; | |
399 | tochdr->cdth_trk0 = toc->hdr.first_track; | |
400 | tochdr->cdth_trk1 = toc->hdr.last_track; | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
405 | static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg) | |
406 | { | |
407 | struct cdrom_tocentry *tocentry = arg; | |
408 | struct atapi_toc_entry *toce; | |
409 | int stat; | |
410 | ||
411 | stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce); | |
412 | if (stat) | |
413 | return stat; | |
414 | ||
415 | tocentry->cdte_ctrl = toce->control; | |
416 | tocentry->cdte_adr = toce->adr; | |
417 | if (tocentry->cdte_format == CDROM_MSF) { | |
418 | lba_to_msf(toce->addr.lba, | |
419 | &tocentry->cdte_addr.msf.minute, | |
420 | &tocentry->cdte_addr.msf.second, | |
421 | &tocentry->cdte_addr.msf.frame); | |
422 | } else | |
423 | tocentry->cdte_addr.lba = toce->addr.lba; | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi, | |
429 | unsigned int cmd, void *arg) | |
430 | { | |
431 | ide_drive_t *drive = cdi->handle; | |
432 | ||
433 | switch (cmd) { | |
434 | /* | |
435 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since | |
436 | * atapi doesn't support it | |
437 | */ | |
438 | case CDROMPLAYTRKIND: | |
439 | return ide_cd_fake_play_trkind(drive, arg); | |
440 | case CDROMREADTOCHDR: | |
441 | return ide_cd_read_tochdr(drive, arg); | |
442 | case CDROMREADTOCENTRY: | |
443 | return ide_cd_read_tocentry(drive, arg); | |
444 | default: | |
445 | return -EINVAL; | |
446 | } | |
447 | } | |
f9afd18b BP |
448 | |
449 | /* the generic packet interface to cdrom.c */ | |
450 | int ide_cdrom_packet(struct cdrom_device_info *cdi, | |
451 | struct packet_command *cgc) | |
452 | { | |
f9afd18b | 453 | ide_drive_t *drive = cdi->handle; |
e8064021 | 454 | req_flags_t flags = 0; |
5f828546 | 455 | unsigned len = cgc->buflen; |
f9afd18b BP |
456 | |
457 | if (cgc->timeout <= 0) | |
458 | cgc->timeout = ATAPI_WAIT_PC; | |
459 | ||
460 | /* here we queue the commands from the uniform CD-ROM | |
461 | layer. the packet must be complete, as we do not | |
462 | touch it at all. */ | |
b348487f | 463 | |
f9afd18b BP |
464 | if (cgc->sense) |
465 | memset(cgc->sense, 0, sizeof(struct request_sense)); | |
f9afd18b BP |
466 | |
467 | if (cgc->quiet) | |
e8064021 | 468 | flags |= RQF_QUIET; |
f9afd18b | 469 | |
5f828546 FT |
470 | cgc->stat = ide_cd_queue_pc(drive, cgc->cmd, |
471 | cgc->data_direction == CGC_DATA_WRITE, | |
472 | cgc->buffer, &len, | |
473 | cgc->sense, cgc->timeout, flags); | |
f9afd18b | 474 | if (!cgc->stat) |
5f828546 | 475 | cgc->buflen -= len; |
f9afd18b BP |
476 | return cgc->stat; |
477 | } |