2 * cdrom.c IOCTLs handling for ide-cd driver.
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>
9 #include <linux/kernel.h>
10 #include <linux/cdrom.h>
11 #include <linux/gfp.h>
12 #include <linux/ide.h>
13 #include <scsi/scsi.h>
17 /****************************************************************************
18 * Other driver requests (open, close, check media change).
20 int ide_cdrom_open_real(struct cdrom_device_info
*cdi
, int purpose
)
26 * Close down the device. Invalidate all cached blocks.
28 void ide_cdrom_release_real(struct cdrom_device_info
*cdi
)
30 ide_drive_t
*drive
= cdi
->handle
;
33 drive
->atapi_flags
&= ~IDE_AFLAG_TOC_VALID
;
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
41 int ide_cdrom_drive_status(struct cdrom_device_info
*cdi
, int slot_nr
)
43 ide_drive_t
*drive
= cdi
->handle
;
44 struct media_event_desc med
;
45 struct request_sense sense
;
48 if (slot_nr
!= CDSL_CURRENT
)
51 stat
= cdrom_check_status(drive
, &sense
);
52 if (!stat
|| sense
.sense_key
== UNIT_ATTENTION
)
55 if (!cdrom_get_media_event(cdi
, &med
)) {
56 if (med
.media_present
)
58 else if (med
.door_open
)
64 if (sense
.sense_key
== NOT_READY
&& sense
.asc
== 0x04
65 && sense
.ascq
== 0x04)
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...
73 if (sense
.sense_key
== NOT_READY
) {
74 if (sense
.asc
== 0x3a && sense
.ascq
== 1)
79 return CDS_DRIVE_NOT_READY
;
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.
88 unsigned int ide_cdrom_check_events_real(struct cdrom_device_info
*cdi
,
89 unsigned int clearing
, int slot_nr
)
91 ide_drive_t
*drive
= cdi
->handle
;
94 if (slot_nr
== CDSL_CURRENT
) {
95 (void) cdrom_check_status(drive
, NULL
);
96 retval
= (drive
->dev_flags
& IDE_DFLAG_MEDIA_CHANGED
) ? 1 : 0;
97 drive
->dev_flags
&= ~IDE_DFLAG_MEDIA_CHANGED
;
98 return retval
? DISK_EVENT_MEDIA_CHANGE
: 0;
104 /* Eject the disk if EJECTFLAG is 0.
105 If EJECTFLAG is 1, try to reload the disk. */
107 int cdrom_eject(ide_drive_t
*drive
, int ejectflag
,
108 struct request_sense
*sense
)
110 struct cdrom_info
*cd
= drive
->driver_data
;
111 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
113 unsigned char cmd
[BLK_MAX_CDB
];
115 if ((drive
->atapi_flags
& IDE_AFLAG_NO_EJECT
) && !ejectflag
)
116 return -EDRIVE_CANT_DO_THIS
;
118 /* reload fails on some drives, if the tray is locked */
119 if ((drive
->atapi_flags
& IDE_AFLAG_DOOR_LOCKED
) && ejectflag
)
122 /* only tell drive to close tray if open, if it can do that */
123 if (ejectflag
&& (cdi
->mask
& CDC_CLOSE_TRAY
))
126 memset(cmd
, 0, BLK_MAX_CDB
);
128 cmd
[0] = GPCMD_START_STOP_UNIT
;
129 cmd
[4] = loej
| (ejectflag
!= 0);
131 return ide_cd_queue_pc(drive
, cmd
, 0, NULL
, NULL
, sense
, 0, 0);
134 /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
136 int ide_cd_lockdoor(ide_drive_t
*drive
, int lockflag
,
137 struct request_sense
*sense
)
139 struct request_sense my_sense
;
145 /* If the drive cannot lock the door, just pretend. */
146 if ((drive
->dev_flags
& IDE_DFLAG_DOORLOCKING
) == 0) {
149 unsigned char cmd
[BLK_MAX_CDB
];
151 memset(cmd
, 0, BLK_MAX_CDB
);
153 cmd
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
154 cmd
[4] = lockflag
? 1 : 0;
156 stat
= ide_cd_queue_pc(drive
, cmd
, 0, NULL
, NULL
,
160 /* If we got an illegal field error, the drive
161 probably cannot lock the door. */
163 sense
->sense_key
== ILLEGAL_REQUEST
&&
164 (sense
->asc
== 0x24 || sense
->asc
== 0x20)) {
165 printk(KERN_ERR
"%s: door locking not supported\n",
167 drive
->dev_flags
&= ~IDE_DFLAG_DOORLOCKING
;
171 /* no medium, that's alright. */
172 if (stat
!= 0 && sense
->sense_key
== NOT_READY
&& sense
->asc
== 0x3a)
177 drive
->atapi_flags
|= IDE_AFLAG_DOOR_LOCKED
;
179 drive
->atapi_flags
&= ~IDE_AFLAG_DOOR_LOCKED
;
185 int ide_cdrom_tray_move(struct cdrom_device_info
*cdi
, int position
)
187 ide_drive_t
*drive
= cdi
->handle
;
188 struct request_sense sense
;
191 int stat
= ide_cd_lockdoor(drive
, 0, &sense
);
197 return cdrom_eject(drive
, !position
, &sense
);
200 int ide_cdrom_lock_door(struct cdrom_device_info
*cdi
, int lock
)
202 ide_drive_t
*drive
= cdi
->handle
;
204 return ide_cd_lockdoor(drive
, lock
, NULL
);
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.
211 int ide_cdrom_select_speed(struct cdrom_device_info
*cdi
, int speed
)
213 ide_drive_t
*drive
= cdi
->handle
;
214 struct cdrom_info
*cd
= drive
->driver_data
;
215 struct request_sense sense
;
216 u8 buf
[ATAPI_CAPABILITIES_PAGE_SIZE
];
218 unsigned char cmd
[BLK_MAX_CDB
];
221 speed
= 0xffff; /* set to max */
223 speed
*= 177; /* Nx to kbytes/s */
225 memset(cmd
, 0, BLK_MAX_CDB
);
227 cmd
[0] = GPCMD_SET_SPEED
;
228 /* Read Drive speed in kbytes/second MSB/LSB */
229 cmd
[2] = (speed
>> 8) & 0xff;
230 cmd
[3] = speed
& 0xff;
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 */
234 cmd
[4] = (speed
>> 8) & 0xff;
235 cmd
[5] = speed
& 0xff;
238 stat
= ide_cd_queue_pc(drive
, cmd
, 0, NULL
, NULL
, &sense
, 0, 0);
240 if (!ide_cdrom_get_capabilities(drive
, buf
)) {
241 ide_cdrom_update_speed(drive
, buf
);
242 cdi
->speed
= cd
->current_speed
;
248 int ide_cdrom_get_last_session(struct cdrom_device_info
*cdi
,
249 struct cdrom_multisession
*ms_info
)
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
;
257 if ((drive
->atapi_flags
& IDE_AFLAG_TOC_VALID
) == 0 || !info
->toc
) {
258 ret
= ide_cd_read_toc(drive
, &sense
);
264 ms_info
->addr
.lba
= toc
->last_session_lba
;
265 ms_info
->xa_flag
= toc
->xa_flag
;
270 int ide_cdrom_get_mcn(struct cdrom_device_info
*cdi
,
271 struct cdrom_mcn
*mcn_info
)
273 ide_drive_t
*drive
= cdi
->handle
;
276 unsigned char cmd
[BLK_MAX_CDB
];
277 unsigned len
= sizeof(buf
);
279 memset(cmd
, 0, BLK_MAX_CDB
);
281 cmd
[0] = GPCMD_READ_SUBCHANNEL
;
282 cmd
[1] = 2; /* MSF addressing */
283 cmd
[2] = 0x40; /* request subQ data */
284 cmd
[3] = 2; /* format */
287 stat
= ide_cd_queue_pc(drive
, cmd
, 0, buf
, &len
, NULL
, 0, 0);
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';
298 int ide_cdrom_reset(struct cdrom_device_info
*cdi
)
300 ide_drive_t
*drive
= cdi
->handle
;
301 struct cdrom_info
*cd
= drive
->driver_data
;
302 struct request_sense sense
;
306 rq
= blk_get_request(drive
->queue
, READ
, __GFP_RECLAIM
);
307 rq
->cmd_type
= REQ_TYPE_DRV_PRIV
;
308 rq
->cmd_flags
= REQ_QUIET
;
309 ret
= blk_execute_rq(drive
->queue
, cd
->disk
, rq
, 0);
312 * A reset will unlock the door. If it was previously locked,
315 if (drive
->atapi_flags
& IDE_AFLAG_DOOR_LOCKED
)
316 (void)ide_cd_lockdoor(drive
, 1, &sense
);
321 static int ide_cd_get_toc_entry(ide_drive_t
*drive
, int track
,
322 struct atapi_toc_entry
**ent
)
324 struct cdrom_info
*info
= drive
->driver_data
;
325 struct atapi_toc
*toc
= info
->toc
;
329 * don't serve cached data, if the toc isn't valid
331 if ((drive
->atapi_flags
& IDE_AFLAG_TOC_VALID
) == 0)
334 /* Check validity of requested track number. */
335 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
337 if (toc
->hdr
.first_track
== CDROM_LEADOUT
)
340 if (track
== CDROM_LEADOUT
)
341 *ent
= &toc
->ent
[ntracks
];
342 else if (track
< toc
->hdr
.first_track
|| track
> toc
->hdr
.last_track
)
345 *ent
= &toc
->ent
[track
- toc
->hdr
.first_track
];
350 static int ide_cd_fake_play_trkind(ide_drive_t
*drive
, void *arg
)
352 struct cdrom_ti
*ti
= arg
;
353 struct atapi_toc_entry
*first_toc
, *last_toc
;
354 unsigned long lba_start
, lba_end
;
356 struct request_sense sense
;
357 unsigned char cmd
[BLK_MAX_CDB
];
359 stat
= ide_cd_get_toc_entry(drive
, ti
->cdti_trk0
, &first_toc
);
363 stat
= ide_cd_get_toc_entry(drive
, ti
->cdti_trk1
, &last_toc
);
367 if (ti
->cdti_trk1
!= CDROM_LEADOUT
)
369 lba_start
= first_toc
->addr
.lba
;
370 lba_end
= last_toc
->addr
.lba
;
372 if (lba_end
<= lba_start
)
375 memset(cmd
, 0, BLK_MAX_CDB
);
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]);
381 return ide_cd_queue_pc(drive
, cmd
, 0, NULL
, NULL
, &sense
, 0, 0);
384 static int ide_cd_read_tochdr(ide_drive_t
*drive
, void *arg
)
386 struct cdrom_info
*cd
= drive
->driver_data
;
387 struct cdrom_tochdr
*tochdr
= arg
;
388 struct atapi_toc
*toc
;
391 /* Make sure our saved TOC is valid. */
392 stat
= ide_cd_read_toc(drive
, NULL
);
397 tochdr
->cdth_trk0
= toc
->hdr
.first_track
;
398 tochdr
->cdth_trk1
= toc
->hdr
.last_track
;
403 static int ide_cd_read_tocentry(ide_drive_t
*drive
, void *arg
)
405 struct cdrom_tocentry
*tocentry
= arg
;
406 struct atapi_toc_entry
*toce
;
409 stat
= ide_cd_get_toc_entry(drive
, tocentry
->cdte_track
, &toce
);
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
);
421 tocentry
->cdte_addr
.lba
= toce
->addr
.lba
;
426 int ide_cdrom_audio_ioctl(struct cdrom_device_info
*cdi
,
427 unsigned int cmd
, void *arg
)
429 ide_drive_t
*drive
= cdi
->handle
;
433 * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
434 * atapi doesn't support it
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
);
447 /* the generic packet interface to cdrom.c */
448 int ide_cdrom_packet(struct cdrom_device_info
*cdi
,
449 struct packet_command
*cgc
)
451 ide_drive_t
*drive
= cdi
->handle
;
452 unsigned int flags
= 0;
453 unsigned len
= cgc
->buflen
;
455 if (cgc
->timeout
<= 0)
456 cgc
->timeout
= ATAPI_WAIT_PC
;
458 /* here we queue the commands from the uniform CD-ROM
459 layer. the packet must be complete, as we do not
462 if (cgc
->data_direction
== CGC_DATA_WRITE
)
466 memset(cgc
->sense
, 0, sizeof(struct request_sense
));
471 cgc
->stat
= ide_cd_queue_pc(drive
, cgc
->cmd
,
472 cgc
->data_direction
== CGC_DATA_WRITE
,
474 cgc
->sense
, cgc
->timeout
, flags
);