blob: 2a6bc50e8a41e8918da5ad8aca49686d68da318c [file] [log] [blame]
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090011#include <linux/gfp.h>
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +010012#include <linux/ide.h>
Borislav Petkovf9afd182008-02-01 23:09:29 +010013#include <scsi/scsi.h>
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +010014
15#include "ide-cd.h"
16
Borislav Petkovf9afd182008-02-01 23:09:29 +010017/****************************************************************************
18 * Other driver requests (open, close, check media change).
19 */
20int 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 */
28void ide_cdrom_release_real(struct cdrom_device_info *cdi)
29{
30 ide_drive_t *drive = cdi->handle;
Borislav Petkovf9afd182008-02-01 23:09:29 +010031
32 if (!cdi->use_count)
Borislav Petkov570f89e2008-07-23 19:56:02 +020033 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
Borislav Petkovf9afd182008-02-01 23:09:29 +010034}
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 */
41int 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
Tejun Heo5b03a1b2011-03-09 19:54:27 +010082unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi,
83 unsigned int clearing, int slot_nr)
Borislav Petkovf9afd182008-02-01 23:09:29 +010084{
85 ide_drive_t *drive = cdi->handle;
Borislav Petkovf9afd182008-02-01 23:09:29 +010086 int retval;
87
88 if (slot_nr == CDSL_CURRENT) {
89 (void) cdrom_check_status(drive, NULL);
Bartlomiej Zolnierkiewiczfe11edf2008-10-17 18:09:11 +020090 retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
91 drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
Tejun Heo5b03a1b2011-03-09 19:54:27 +010092 return retval ? DISK_EVENT_MEDIA_CHANGE : 0;
Borislav Petkovf9afd182008-02-01 23:09:29 +010093 } else {
Tejun Heo5b03a1b2011-03-09 19:54:27 +010094 return 0;
Borislav Petkovf9afd182008-02-01 23:09:29 +010095 }
96}
97
98/* Eject the disk if EJECTFLAG is 0.
99 If EJECTFLAG is 1, try to reload the disk. */
100static
101int cdrom_eject(ide_drive_t *drive, int ejectflag,
102 struct request_sense *sense)
103{
104 struct cdrom_info *cd = drive->driver_data;
105 struct cdrom_device_info *cdi = &cd->devinfo;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100106 char loej = 0x02;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200107 unsigned char cmd[BLK_MAX_CDB];
Borislav Petkovf9afd182008-02-01 23:09:29 +0100108
Borislav Petkov570f89e2008-07-23 19:56:02 +0200109 if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
Borislav Petkovf9afd182008-02-01 23:09:29 +0100110 return -EDRIVE_CANT_DO_THIS;
111
112 /* reload fails on some drives, if the tray is locked */
Borislav Petkov570f89e2008-07-23 19:56:02 +0200113 if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
Borislav Petkovf9afd182008-02-01 23:09:29 +0100114 return 0;
115
Borislav Petkovf9afd182008-02-01 23:09:29 +0100116 /* only tell drive to close tray if open, if it can do that */
117 if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
118 loej = 0;
119
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200120 memset(cmd, 0, BLK_MAX_CDB);
Borislav Petkovf9afd182008-02-01 23:09:29 +0100121
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200122 cmd[0] = GPCMD_START_STOP_UNIT;
123 cmd[4] = loej | (ejectflag != 0);
124
Harvey Harrison1a677ab2008-07-23 19:56:02 +0200125 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, 0);
Borislav Petkovf9afd182008-02-01 23:09:29 +0100126}
127
128/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
129static
130int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
131 struct request_sense *sense)
132{
Borislav Petkovf9afd182008-02-01 23:09:29 +0100133 struct request_sense my_sense;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100134 int stat;
135
136 if (sense == NULL)
137 sense = &my_sense;
138
139 /* If the drive cannot lock the door, just pretend. */
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +0200140 if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) {
Borislav Petkovf9afd182008-02-01 23:09:29 +0100141 stat = 0;
142 } else {
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200143 unsigned char cmd[BLK_MAX_CDB];
144
145 memset(cmd, 0, BLK_MAX_CDB);
146
147 cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
148 cmd[4] = lockflag ? 1 : 0;
149
Harvey Harrison1a677ab2008-07-23 19:56:02 +0200150 stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL,
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200151 sense, 0, 0);
Borislav Petkovf9afd182008-02-01 23:09:29 +0100152 }
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);
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +0200161 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100162 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)
Borislav Petkov570f89e2008-07-23 19:56:02 +0200171 drive->atapi_flags |= IDE_AFLAG_DOOR_LOCKED;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100172 else
Borislav Petkov570f89e2008-07-23 19:56:02 +0200173 drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100174 }
175
176 return stat;
177}
178
179int 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
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100194int 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 */
205int 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;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100209 struct request_sense sense;
210 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
211 int stat;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200212 unsigned char cmd[BLK_MAX_CDB];
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100213
214 if (speed == 0)
215 speed = 0xffff; /* set to max */
216 else
217 speed *= 177; /* Nx to kbytes/s */
218
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200219 memset(cmd, 0, BLK_MAX_CDB);
220
221 cmd[0] = GPCMD_SET_SPEED;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100222 /* Read Drive speed in kbytes/second MSB/LSB */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200223 cmd[2] = (speed >> 8) & 0xff;
224 cmd[3] = speed & 0xff;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100225 if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) !=
226 (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) {
227 /* Write Drive speed in kbytes/second MSB/LSB */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200228 cmd[4] = (speed >> 8) & 0xff;
229 cmd[5] = speed & 0xff;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100230 }
231
Harvey Harrison1a677ab2008-07-23 19:56:02 +0200232 stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100233
234 if (!ide_cdrom_get_capabilities(drive, buf)) {
235 ide_cdrom_update_speed(drive, buf);
236 cdi->speed = cd->current_speed;
237 }
238
239 return 0;
240}
241
242int ide_cdrom_get_last_session(struct cdrom_device_info *cdi,
243 struct cdrom_multisession *ms_info)
244{
245 struct atapi_toc *toc;
246 ide_drive_t *drive = cdi->handle;
247 struct cdrom_info *info = drive->driver_data;
248 struct request_sense sense;
249 int ret;
250
Borislav Petkov570f89e2008-07-23 19:56:02 +0200251 if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 || !info->toc) {
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100252 ret = ide_cd_read_toc(drive, &sense);
253 if (ret)
254 return ret;
255 }
256
257 toc = info->toc;
258 ms_info->addr.lba = toc->last_session_lba;
259 ms_info->xa_flag = toc->xa_flag;
260
261 return 0;
262}
263
264int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
265 struct cdrom_mcn *mcn_info)
266{
267 ide_drive_t *drive = cdi->handle;
268 int stat, mcnlen;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100269 char buf[24];
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200270 unsigned char cmd[BLK_MAX_CDB];
271 unsigned len = sizeof(buf);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100272
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200273 memset(cmd, 0, BLK_MAX_CDB);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100274
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200275 cmd[0] = GPCMD_READ_SUBCHANNEL;
276 cmd[1] = 2; /* MSF addressing */
277 cmd[2] = 0x40; /* request subQ data */
278 cmd[3] = 2; /* format */
279 cmd[8] = len;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100280
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200281 stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100282 if (stat)
283 return stat;
284
285 mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
286 memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
287 mcn_info->medium_catalog_number[mcnlen] = '\0';
288
289 return 0;
290}
291
292int ide_cdrom_reset(struct cdrom_device_info *cdi)
293{
294 ide_drive_t *drive = cdi->handle;
295 struct cdrom_info *cd = drive->driver_data;
296 struct request_sense sense;
FUJITA Tomonori0ef4c4d2008-07-15 21:21:42 +0200297 struct request *rq;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100298 int ret;
299
FUJITA Tomonori0ef4c4d2008-07-15 21:21:42 +0200300 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
301 rq->cmd_type = REQ_TYPE_SPECIAL;
302 rq->cmd_flags = REQ_QUIET;
303 ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
304 blk_put_request(rq);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100305 /*
306 * A reset will unlock the door. If it was previously locked,
307 * lock it again.
308 */
Borislav Petkov570f89e2008-07-23 19:56:02 +0200309 if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED)
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100310 (void)ide_cd_lockdoor(drive, 1, &sense);
311
312 return ret;
313}
314
315static int ide_cd_get_toc_entry(ide_drive_t *drive, int track,
316 struct atapi_toc_entry **ent)
317{
318 struct cdrom_info *info = drive->driver_data;
319 struct atapi_toc *toc = info->toc;
320 int ntracks;
321
322 /*
323 * don't serve cached data, if the toc isn't valid
324 */
Borislav Petkov570f89e2008-07-23 19:56:02 +0200325 if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0)
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100326 return -EINVAL;
327
328 /* Check validity of requested track number. */
329 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
330
331 if (toc->hdr.first_track == CDROM_LEADOUT)
332 ntracks = 0;
333
334 if (track == CDROM_LEADOUT)
335 *ent = &toc->ent[ntracks];
336 else if (track < toc->hdr.first_track || track > toc->hdr.last_track)
337 return -EINVAL;
338 else
339 *ent = &toc->ent[track - toc->hdr.first_track];
340
341 return 0;
342}
343
344static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg)
345{
346 struct cdrom_ti *ti = arg;
347 struct atapi_toc_entry *first_toc, *last_toc;
348 unsigned long lba_start, lba_end;
349 int stat;
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100350 struct request_sense sense;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200351 unsigned char cmd[BLK_MAX_CDB];
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100352
353 stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
354 if (stat)
355 return stat;
356
357 stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
358 if (stat)
359 return stat;
360
361 if (ti->cdti_trk1 != CDROM_LEADOUT)
362 ++last_toc;
363 lba_start = first_toc->addr.lba;
364 lba_end = last_toc->addr.lba;
365
366 if (lba_end <= lba_start)
367 return -EINVAL;
368
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200369 memset(cmd, 0, BLK_MAX_CDB);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100370
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200371 cmd[0] = GPCMD_PLAY_AUDIO_MSF;
372 lba_to_msf(lba_start, &cmd[3], &cmd[4], &cmd[5]);
373 lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100374
Harvey Harrison1a677ab2008-07-23 19:56:02 +0200375 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0);
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100376}
377
378static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg)
379{
380 struct cdrom_info *cd = drive->driver_data;
381 struct cdrom_tochdr *tochdr = arg;
382 struct atapi_toc *toc;
383 int stat;
384
385 /* Make sure our saved TOC is valid. */
386 stat = ide_cd_read_toc(drive, NULL);
387 if (stat)
388 return stat;
389
390 toc = cd->toc;
391 tochdr->cdth_trk0 = toc->hdr.first_track;
392 tochdr->cdth_trk1 = toc->hdr.last_track;
393
394 return 0;
395}
396
397static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg)
398{
399 struct cdrom_tocentry *tocentry = arg;
400 struct atapi_toc_entry *toce;
401 int stat;
402
403 stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
404 if (stat)
405 return stat;
406
407 tocentry->cdte_ctrl = toce->control;
408 tocentry->cdte_adr = toce->adr;
409 if (tocentry->cdte_format == CDROM_MSF) {
410 lba_to_msf(toce->addr.lba,
411 &tocentry->cdte_addr.msf.minute,
412 &tocentry->cdte_addr.msf.second,
413 &tocentry->cdte_addr.msf.frame);
414 } else
415 tocentry->cdte_addr.lba = toce->addr.lba;
416
417 return 0;
418}
419
420int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
421 unsigned int cmd, void *arg)
422{
423 ide_drive_t *drive = cdi->handle;
424
425 switch (cmd) {
426 /*
427 * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
428 * atapi doesn't support it
429 */
430 case CDROMPLAYTRKIND:
431 return ide_cd_fake_play_trkind(drive, arg);
432 case CDROMREADTOCHDR:
433 return ide_cd_read_tochdr(drive, arg);
434 case CDROMREADTOCENTRY:
435 return ide_cd_read_tocentry(drive, arg);
436 default:
437 return -EINVAL;
438 }
439}
Borislav Petkovf9afd182008-02-01 23:09:29 +0100440
441/* the generic packet interface to cdrom.c */
442int ide_cdrom_packet(struct cdrom_device_info *cdi,
443 struct packet_command *cgc)
444{
Borislav Petkovf9afd182008-02-01 23:09:29 +0100445 ide_drive_t *drive = cdi->handle;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200446 unsigned int flags = 0;
447 unsigned len = cgc->buflen;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100448
449 if (cgc->timeout <= 0)
450 cgc->timeout = ATAPI_WAIT_PC;
451
452 /* here we queue the commands from the uniform CD-ROM
453 layer. the packet must be complete, as we do not
454 touch it at all. */
Bartlomiej Zolnierkiewiczb3484872008-03-07 21:53:49 +0100455
456 if (cgc->data_direction == CGC_DATA_WRITE)
Christoph Hellwig7b6d91d2010-08-07 18:20:39 +0200457 flags |= REQ_WRITE;
Bartlomiej Zolnierkiewiczb3484872008-03-07 21:53:49 +0100458
Borislav Petkovf9afd182008-02-01 23:09:29 +0100459 if (cgc->sense)
460 memset(cgc->sense, 0, sizeof(struct request_sense));
Borislav Petkovf9afd182008-02-01 23:09:29 +0100461
462 if (cgc->quiet)
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200463 flags |= REQ_QUIET;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100464
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200465 cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
466 cgc->data_direction == CGC_DATA_WRITE,
467 cgc->buffer, &len,
468 cgc->sense, cgc->timeout, flags);
Borislav Petkovf9afd182008-02-01 23:09:29 +0100469 if (!cgc->stat)
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200470 cgc->buflen -= len;
Borislav Petkovf9afd182008-02-01 23:09:29 +0100471 return cgc->stat;
472}