2 * linux/drivers/ide/ide-cd.c
4 * Copyright (C) 1994, 1995, 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>
8 * May be copied or modified under the terms of the GNU General Public
9 * License. See linux/COPYING for more information.
11 * ATAPI CD-ROM driver. To be used with ide.c.
12 * See Documentation/cdrom/ide-cd for usage information.
14 * Suggestions are welcome. Patches that work are more welcome though. ;-)
15 * For those wishing to work on this driver, please be sure you download
16 * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI
17 * (SFF-8020i rev 2.6) standards. These documents can be obtained by
19 * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps
20 * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf
22 * Drives that deviate from these standards will be accommodated as much
23 * as possible via compile time or command-line options. Since I only have
24 * a few drives, you generally need to send me patches...
26 * ----------------------------------
28 * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on
31 * For historical changelog please see:
32 * Documentation/ide/ChangeLog.ide-cd.1994-2004
35 #define IDECD_VERSION "4.61"
37 #include <linux/module.h>
38 #include <linux/types.h>
39 #include <linux/kernel.h>
40 #include <linux/delay.h>
41 #include <linux/timer.h>
42 #include <linux/slab.h>
43 #include <linux/interrupt.h>
44 #include <linux/errno.h>
45 #include <linux/cdrom.h>
46 #include <linux/ide.h>
47 #include <linux/completion.h>
48 #include <linux/mutex.h>
49 #include <linux/bcd.h>
51 #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */
55 #include <asm/byteorder.h>
56 #include <asm/uaccess.h>
57 #include <asm/unaligned.h>
61 static DEFINE_MUTEX(idecd_ref_mutex
);
63 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
65 #define ide_cd_g(disk) \
66 container_of((disk)->private_data, struct cdrom_info, driver)
68 static struct cdrom_info
*ide_cd_get(struct gendisk
*disk
)
70 struct cdrom_info
*cd
= NULL
;
72 mutex_lock(&idecd_ref_mutex
);
76 mutex_unlock(&idecd_ref_mutex
);
80 static void ide_cd_release(struct kref
*);
82 static void ide_cd_put(struct cdrom_info
*cd
)
84 mutex_lock(&idecd_ref_mutex
);
85 kref_put(&cd
->kref
, ide_cd_release
);
86 mutex_unlock(&idecd_ref_mutex
);
89 /****************************************************************************
90 * Generic packet command support and error handling routines.
93 /* Mark that we've seen a media change, and invalidate our internal
95 static void cdrom_saw_media_change (ide_drive_t
*drive
)
97 struct cdrom_info
*cd
= drive
->driver_data
;
99 cd
->cd_flags
|= IDE_CD_FLAG_MEDIA_CHANGED
;
100 cd
->cd_flags
&= ~IDE_CD_FLAG_TOC_VALID
;
101 cd
->nsectors_buffered
= 0;
104 static int cdrom_log_sense(ide_drive_t
*drive
, struct request
*rq
,
105 struct request_sense
*sense
)
109 if (!sense
|| !rq
|| (rq
->cmd_flags
& REQ_QUIET
))
112 switch (sense
->sense_key
) {
113 case NO_SENSE
: case RECOVERED_ERROR
:
117 * don't care about tray state messages for
118 * e.g. capacity commands or in-progress or
121 if (sense
->asc
== 0x3a || sense
->asc
== 0x04)
125 case ILLEGAL_REQUEST
:
127 * don't log START_STOP unit with LoEj set, since
128 * we cannot reliably check if drive can auto-close
130 if (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
&& sense
->asc
== 0x24)
136 * Make good and sure we've seen this potential media
137 * change. Some drives (i.e. Creative) fail to present
138 * the correct sense key in the error register.
140 cdrom_saw_media_change(drive
);
150 void cdrom_analyze_sense_data(ide_drive_t
*drive
,
151 struct request
*failed_command
,
152 struct request_sense
*sense
)
154 unsigned long sector
;
155 unsigned long bio_sectors
;
157 struct cdrom_info
*info
= drive
->driver_data
;
159 if (!cdrom_log_sense(drive
, failed_command
, sense
))
163 * If a read toc is executed for a CD-R or CD-RW medium where
164 * the first toc has not been recorded yet, it will fail with
165 * 05/24/00 (which is a confusing error)
167 if (failed_command
&& failed_command
->cmd
[0] == GPCMD_READ_TOC_PMA_ATIP
)
168 if (sense
->sense_key
== 0x05 && sense
->asc
== 0x24)
171 if (sense
->error_code
== 0x70) { /* Current Error */
172 switch(sense
->sense_key
) {
174 case VOLUME_OVERFLOW
:
175 case ILLEGAL_REQUEST
:
178 if (failed_command
== NULL
||
179 !blk_fs_request(failed_command
))
181 sector
= (sense
->information
[0] << 24) |
182 (sense
->information
[1] << 16) |
183 (sense
->information
[2] << 8) |
184 (sense
->information
[3]);
186 bio_sectors
= bio_sectors(failed_command
->bio
);
189 if (drive
->queue
->hardsect_size
== 2048)
190 sector
<<= 2; /* Device sector size is 2K */
191 sector
&= ~(bio_sectors
-1);
192 valid
= (sector
- failed_command
->sector
) << 9;
196 if (sector
< get_capacity(info
->disk
) &&
197 drive
->probed_capacity
- sector
< 4 * 75) {
198 set_capacity(info
->disk
, sector
);
203 ide_cd_log_error(drive
->name
, failed_command
, sense
);
207 * Initialize a ide-cd packet command request
209 void ide_cd_init_rq(ide_drive_t
*drive
, struct request
*rq
)
211 struct cdrom_info
*cd
= drive
->driver_data
;
213 ide_init_drive_cmd(rq
);
214 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
215 rq
->rq_disk
= cd
->disk
;
218 static void cdrom_queue_request_sense(ide_drive_t
*drive
, void *sense
,
219 struct request
*failed_command
)
221 struct cdrom_info
*info
= drive
->driver_data
;
222 struct request
*rq
= &info
->request_sense_request
;
225 sense
= &info
->sense_data
;
227 /* stuff the sense request in front of our current request */
228 ide_cd_init_rq(drive
, rq
);
231 rq
->cmd
[0] = GPCMD_REQUEST_SENSE
;
232 rq
->cmd
[4] = rq
->data_len
= 18;
234 rq
->cmd_type
= REQ_TYPE_SENSE
;
236 /* NOTE! Save the failed command in "rq->buffer" */
237 rq
->buffer
= (void *) failed_command
;
239 (void) ide_do_drive_cmd(drive
, rq
, ide_preempt
);
242 static void cdrom_end_request (ide_drive_t
*drive
, int uptodate
)
244 struct request
*rq
= HWGROUP(drive
)->rq
;
245 int nsectors
= rq
->hard_cur_sectors
;
247 if (blk_sense_request(rq
) && uptodate
) {
249 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
252 struct request
*failed
= (struct request
*) rq
->buffer
;
253 struct cdrom_info
*info
= drive
->driver_data
;
254 void *sense
= &info
->sense_data
;
259 sense
= failed
->sense
;
260 failed
->sense_len
= rq
->sense_len
;
262 cdrom_analyze_sense_data(drive
, failed
, sense
);
264 * now end failed request
266 if (blk_fs_request(failed
)) {
267 if (ide_end_dequeued_request(drive
, failed
, 0,
268 failed
->hard_nr_sectors
))
271 spin_lock_irqsave(&ide_lock
, flags
);
272 if (__blk_end_request(failed
, -EIO
,
275 spin_unlock_irqrestore(&ide_lock
, flags
);
278 cdrom_analyze_sense_data(drive
, NULL
, sense
);
281 if (!rq
->current_nr_sectors
&& blk_fs_request(rq
))
283 /* make sure it's fully ended */
284 if (blk_pc_request(rq
))
285 nsectors
= (rq
->data_len
+ 511) >> 9;
289 ide_end_request(drive
, uptodate
, nsectors
);
292 static void ide_dump_status_no_sense(ide_drive_t
*drive
, const char *msg
, u8 stat
)
296 ide_dump_status(drive
, msg
, stat
);
299 /* Returns 0 if the request should be continued.
300 Returns 1 if the request was ended. */
301 static int cdrom_decode_status(ide_drive_t
*drive
, int good_stat
, int *stat_ret
)
303 struct request
*rq
= HWGROUP(drive
)->rq
;
304 int stat
, err
, sense_key
;
306 /* Check for errors. */
307 stat
= HWIF(drive
)->INB(IDE_STATUS_REG
);
311 if (OK_STAT(stat
, good_stat
, BAD_R_STAT
))
314 /* Get the IDE error register. */
315 err
= HWIF(drive
)->INB(IDE_ERROR_REG
);
316 sense_key
= err
>> 4;
319 printk("%s: missing rq in cdrom_decode_status\n", drive
->name
);
323 if (blk_sense_request(rq
)) {
324 /* We got an error trying to get sense info
325 from the drive (probably while trying
326 to recover from a former error). Just give up. */
328 rq
->cmd_flags
|= REQ_FAILED
;
329 cdrom_end_request(drive
, 0);
330 ide_error(drive
, "request sense failure", stat
);
333 } else if (blk_pc_request(rq
) || rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
334 /* All other functions, except for READ. */
338 * if we have an error, pass back CHECK_CONDITION as the
341 if (blk_pc_request(rq
) && !rq
->errors
)
342 rq
->errors
= SAM_STAT_CHECK_CONDITION
;
344 /* Check for tray open. */
345 if (sense_key
== NOT_READY
) {
346 cdrom_saw_media_change (drive
);
347 } else if (sense_key
== UNIT_ATTENTION
) {
348 /* Check for media change. */
349 cdrom_saw_media_change (drive
);
350 /*printk("%s: media changed\n",drive->name);*/
352 } else if ((sense_key
== ILLEGAL_REQUEST
) &&
353 (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
)) {
355 * Don't print error message for this condition--
356 * SFF8090i indicates that 5/24/00 is the correct
357 * response to a request to close the tray if the
358 * drive doesn't have that capability.
359 * cdrom_log_sense() knows this!
361 } else if (!(rq
->cmd_flags
& REQ_QUIET
)) {
362 /* Otherwise, print an error. */
363 ide_dump_status(drive
, "packet command error", stat
);
366 rq
->cmd_flags
|= REQ_FAILED
;
369 * instead of playing games with moving completions around,
370 * remove failed request completely and end it when the
371 * request sense has completed
373 if (stat
& ERR_STAT
) {
374 spin_lock_irqsave(&ide_lock
, flags
);
375 blkdev_dequeue_request(rq
);
376 HWGROUP(drive
)->rq
= NULL
;
377 spin_unlock_irqrestore(&ide_lock
, flags
);
379 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
381 cdrom_end_request(drive
, 0);
383 } else if (blk_fs_request(rq
)) {
384 int do_end_request
= 0;
386 /* Handle errors from READ and WRITE requests. */
388 if (blk_noretry_request(rq
))
391 if (sense_key
== NOT_READY
) {
393 if (rq_data_dir(rq
) == READ
) {
394 cdrom_saw_media_change (drive
);
396 /* Fail the request. */
397 printk ("%s: tray open\n", drive
->name
);
400 struct cdrom_info
*info
= drive
->driver_data
;
402 /* allow the drive 5 seconds to recover, some
403 * devices will return this error while flushing
406 info
->write_timeout
= jiffies
+ ATAPI_WAIT_WRITE_BUSY
;
408 if (time_after(jiffies
, info
->write_timeout
))
414 * take a breather relying on the
415 * unplug timer to kick us again
417 spin_lock_irqsave(&ide_lock
, flags
);
418 blk_plug_device(drive
->queue
);
419 spin_unlock_irqrestore(&ide_lock
,flags
);
423 } else if (sense_key
== UNIT_ATTENTION
) {
425 cdrom_saw_media_change (drive
);
427 /* Arrange to retry the request.
428 But be sure to give up if we've retried
430 if (++rq
->errors
> ERROR_MAX
)
432 } else if (sense_key
== ILLEGAL_REQUEST
||
433 sense_key
== DATA_PROTECT
) {
434 /* No point in retrying after an illegal
435 request or data protect error.*/
436 ide_dump_status_no_sense (drive
, "command error", stat
);
438 } else if (sense_key
== MEDIUM_ERROR
) {
439 /* No point in re-trying a zillion times on a bad
440 * sector... If we got here the error is not correctable */
441 ide_dump_status_no_sense (drive
, "media error (bad sector)", stat
);
443 } else if (sense_key
== BLANK_CHECK
) {
444 /* Disk appears blank ?? */
445 ide_dump_status_no_sense (drive
, "media error (blank)", stat
);
447 } else if ((err
& ~ABRT_ERR
) != 0) {
448 /* Go to the default handler
450 ide_error(drive
, "cdrom_decode_status", stat
);
452 } else if ((++rq
->errors
> ERROR_MAX
)) {
453 /* We've racked up too many retries. Abort. */
457 /* End a request through request sense analysis when we have
458 sense data. We need this in order to perform end of media
461 if (do_end_request
) {
462 if (stat
& ERR_STAT
) {
464 spin_lock_irqsave(&ide_lock
, flags
);
465 blkdev_dequeue_request(rq
);
466 HWGROUP(drive
)->rq
= NULL
;
467 spin_unlock_irqrestore(&ide_lock
, flags
);
469 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
471 cdrom_end_request(drive
, 0);
473 /* If we got a CHECK_CONDITION status,
474 queue a request sense command. */
476 cdrom_queue_request_sense(drive
, NULL
, NULL
);
479 blk_dump_rq_flags(rq
, "ide-cd: bad rq");
480 cdrom_end_request(drive
, 0);
483 /* Retry, or handle the next request. */
487 static int cdrom_timer_expiry(ide_drive_t
*drive
)
489 struct request
*rq
= HWGROUP(drive
)->rq
;
490 unsigned long wait
= 0;
493 * Some commands are *slow* and normally take a long time to
494 * complete. Usually we can use the ATAPI "disconnect" to bypass
495 * this, but not all commands/drives support that. Let
496 * ide_timer_expiry keep polling us for these.
498 switch (rq
->cmd
[0]) {
500 case GPCMD_FORMAT_UNIT
:
501 case GPCMD_RESERVE_RZONE_TRACK
:
502 case GPCMD_CLOSE_TRACK
:
503 case GPCMD_FLUSH_CACHE
:
504 wait
= ATAPI_WAIT_PC
;
507 if (!(rq
->cmd_flags
& REQ_QUIET
))
508 printk(KERN_INFO
"ide-cd: cmd 0x%x timed out\n", rq
->cmd
[0]);
515 /* Set up the device registers for transferring a packet command on DEV,
516 expecting to later transfer XFERLEN bytes. HANDLER is the routine
517 which actually transfers the command to the drive. If this is a
518 drq_interrupt device, this routine will arrange for HANDLER to be
519 called when the interrupt from the drive arrives. Otherwise, HANDLER
520 will be called immediately after the drive is prepared for the transfer. */
522 static ide_startstop_t
cdrom_start_packet_command(ide_drive_t
*drive
,
524 ide_handler_t
*handler
)
526 ide_startstop_t startstop
;
527 struct cdrom_info
*info
= drive
->driver_data
;
528 ide_hwif_t
*hwif
= drive
->hwif
;
530 /* Wait for the controller to be idle. */
531 if (ide_wait_stat(&startstop
, drive
, 0, BUSY_STAT
, WAIT_READY
))
534 /* FIXME: for Virtual DMA we must check harder */
536 info
->dma
= !hwif
->dma_setup(drive
);
538 /* Set up the controller registers. */
539 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_NSECT
| IDE_TFLAG_OUT_LBAL
|
540 IDE_TFLAG_NO_SELECT_MASK
, xferlen
, info
->dma
);
542 if (info
->cd_flags
& IDE_CD_FLAG_DRQ_INTERRUPT
) {
543 /* waiting for CDB interrupt, not DMA yet. */
545 drive
->waiting_for_dma
= 0;
548 ide_execute_command(drive
, WIN_PACKETCMD
, handler
, ATAPI_WAIT_PC
, cdrom_timer_expiry
);
554 spin_lock_irqsave(&ide_lock
, flags
);
555 hwif
->OUTBSYNC(drive
, WIN_PACKETCMD
, IDE_COMMAND_REG
);
557 spin_unlock_irqrestore(&ide_lock
, flags
);
559 return (*handler
) (drive
);
563 /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
564 The device registers must have already been prepared
565 by cdrom_start_packet_command.
566 HANDLER is the interrupt handler to call when the command completes
567 or there's data ready. */
568 #define ATAPI_MIN_CDB_BYTES 12
569 static ide_startstop_t
cdrom_transfer_packet_command (ide_drive_t
*drive
,
571 ide_handler_t
*handler
)
573 ide_hwif_t
*hwif
= drive
->hwif
;
575 struct cdrom_info
*info
= drive
->driver_data
;
576 ide_startstop_t startstop
;
578 if (info
->cd_flags
& IDE_CD_FLAG_DRQ_INTERRUPT
) {
579 /* Here we should have been called after receiving an interrupt
580 from the device. DRQ should how be set. */
582 /* Check for errors. */
583 if (cdrom_decode_status(drive
, DRQ_STAT
, NULL
))
586 /* Ok, next interrupt will be DMA interrupt. */
588 drive
->waiting_for_dma
= 1;
590 /* Otherwise, we must wait for DRQ to get set. */
591 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
,
592 BUSY_STAT
, WAIT_READY
))
596 /* Arm the interrupt handler. */
597 ide_set_handler(drive
, handler
, rq
->timeout
, cdrom_timer_expiry
);
599 /* ATAPI commands get padded out to 12 bytes minimum */
600 cmd_len
= COMMAND_SIZE(rq
->cmd
[0]);
601 if (cmd_len
< ATAPI_MIN_CDB_BYTES
)
602 cmd_len
= ATAPI_MIN_CDB_BYTES
;
604 /* Send the command to the device. */
605 HWIF(drive
)->atapi_output_bytes(drive
, rq
->cmd
, cmd_len
);
607 /* Start the DMA if need be */
609 hwif
->dma_start(drive
);
614 /****************************************************************************
615 * Block read functions.
618 typedef void (xfer_func_t
)(ide_drive_t
*, void *, u32
);
620 static void ide_cd_pad_transfer(ide_drive_t
*drive
, xfer_func_t
*xf
, int len
)
624 xf(drive
, &dum
, sizeof(dum
));
630 * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
631 * buffer. Once the first sector is added, any subsequent sectors are
632 * assumed to be continuous (until the buffer is cleared). For the first
633 * sector added, SECTOR is its sector number. (SECTOR is then ignored until
634 * the buffer is cleared.)
636 static void cdrom_buffer_sectors (ide_drive_t
*drive
, unsigned long sector
,
637 int sectors_to_transfer
)
639 struct cdrom_info
*info
= drive
->driver_data
;
641 /* Number of sectors to read into the buffer. */
642 int sectors_to_buffer
= min_t(int, sectors_to_transfer
,
643 (SECTOR_BUFFER_SIZE
>> SECTOR_BITS
) -
644 info
->nsectors_buffered
);
648 /* If we couldn't get a buffer, don't try to buffer anything... */
649 if (info
->buffer
== NULL
)
650 sectors_to_buffer
= 0;
652 /* If this is the first sector in the buffer, remember its number. */
653 if (info
->nsectors_buffered
== 0)
654 info
->sector_buffered
= sector
;
656 /* Read the data into the buffer. */
657 dest
= info
->buffer
+ info
->nsectors_buffered
* SECTOR_SIZE
;
658 while (sectors_to_buffer
> 0) {
659 HWIF(drive
)->atapi_input_bytes(drive
, dest
, SECTOR_SIZE
);
661 --sectors_to_transfer
;
662 ++info
->nsectors_buffered
;
666 /* Throw away any remaining data. */
667 while (sectors_to_transfer
> 0) {
668 static char dum
[SECTOR_SIZE
];
669 HWIF(drive
)->atapi_input_bytes(drive
, dum
, sizeof (dum
));
670 --sectors_to_transfer
;
675 * Check the contents of the interrupt reason register from the cdrom
676 * and attempt to recover if there are problems. Returns 0 if everything's
677 * ok; nonzero if the request has been terminated.
680 int cdrom_read_check_ireason (ide_drive_t
*drive
, int len
, int ireason
)
684 else if (ireason
== 0) {
685 ide_hwif_t
*hwif
= drive
->hwif
;
687 /* Whoops... The drive is expecting to receive data from us! */
688 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
689 drive
->name
, __FUNCTION__
);
691 /* Throw some data at the drive so it doesn't hang
692 and quit this request. */
693 ide_cd_pad_transfer(drive
, hwif
->atapi_output_bytes
, len
);
694 } else if (ireason
== 1) {
695 /* Some drives (ASUS) seem to tell us that status
696 * info is available. just get it and ignore.
698 (void) HWIF(drive
)->INB(IDE_STATUS_REG
);
701 /* Drive wants a command packet, or invalid ireason... */
702 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
703 drive
->name
, __FUNCTION__
, ireason
);
706 cdrom_end_request(drive
, 0);
711 * Interrupt routine. Called when a read request has completed.
713 static ide_startstop_t
cdrom_read_intr (ide_drive_t
*drive
)
716 int ireason
, len
, sectors_to_transfer
, nskip
;
717 struct cdrom_info
*info
= drive
->driver_data
;
718 u8 lowcyl
= 0, highcyl
= 0;
719 int dma
= info
->dma
, dma_error
= 0;
721 struct request
*rq
= HWGROUP(drive
)->rq
;
728 dma_error
= HWIF(drive
)->ide_dma_end(drive
);
730 printk(KERN_ERR
"%s: DMA read error\n", drive
->name
);
735 if (cdrom_decode_status(drive
, 0, &stat
))
740 ide_end_request(drive
, 1, rq
->nr_sectors
);
743 return ide_error(drive
, "dma error", stat
);
746 /* Read the interrupt reason and the transfer length. */
747 ireason
= HWIF(drive
)->INB(IDE_IREASON_REG
) & 0x3;
748 lowcyl
= HWIF(drive
)->INB(IDE_BCOUNTL_REG
);
749 highcyl
= HWIF(drive
)->INB(IDE_BCOUNTH_REG
);
751 len
= lowcyl
+ (256 * highcyl
);
753 /* If DRQ is clear, the command has completed. */
754 if ((stat
& DRQ_STAT
) == 0) {
755 /* If we're not done filling the current buffer, complain.
756 Otherwise, complete the command normally. */
757 if (rq
->current_nr_sectors
> 0) {
758 printk (KERN_ERR
"%s: cdrom_read_intr: data underrun (%d blocks)\n",
759 drive
->name
, rq
->current_nr_sectors
);
760 rq
->cmd_flags
|= REQ_FAILED
;
761 cdrom_end_request(drive
, 0);
763 cdrom_end_request(drive
, 1);
767 /* Check that the drive is expecting to do the same thing we are. */
768 if (cdrom_read_check_ireason (drive
, len
, ireason
))
771 /* Assume that the drive will always provide data in multiples
772 of at least SECTOR_SIZE, as it gets hairy to keep track
773 of the transfers otherwise. */
774 if ((len
% SECTOR_SIZE
) != 0) {
775 printk (KERN_ERR
"%s: cdrom_read_intr: Bad transfer size %d\n",
777 if (info
->cd_flags
& IDE_CD_FLAG_LIMIT_NFRAMES
)
778 printk (KERN_ERR
" This drive is not supported by this version of the driver\n");
780 printk (KERN_ERR
" Trying to limit transfer sizes\n");
781 info
->cd_flags
|= IDE_CD_FLAG_LIMIT_NFRAMES
;
783 cdrom_end_request(drive
, 0);
787 /* The number of sectors we need to read from the drive. */
788 sectors_to_transfer
= len
/ SECTOR_SIZE
;
790 /* First, figure out if we need to bit-bucket
791 any of the leading sectors. */
792 nskip
= min_t(int, rq
->current_nr_sectors
- bio_cur_sectors(rq
->bio
), sectors_to_transfer
);
795 /* We need to throw away a sector. */
796 static char dum
[SECTOR_SIZE
];
797 HWIF(drive
)->atapi_input_bytes(drive
, dum
, sizeof (dum
));
799 --rq
->current_nr_sectors
;
801 --sectors_to_transfer
;
804 /* Now loop while we still have data to read from the drive. */
805 while (sectors_to_transfer
> 0) {
808 /* If we've filled the present buffer but there's another
809 chained buffer after it, move on. */
810 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
811 cdrom_end_request(drive
, 1);
813 /* If the buffers are full, cache the rest of the data in our
815 if (rq
->current_nr_sectors
== 0) {
816 cdrom_buffer_sectors(drive
, rq
->sector
, sectors_to_transfer
);
817 sectors_to_transfer
= 0;
819 /* Transfer data to the buffers.
820 Figure out how many sectors we can transfer
821 to the current buffer. */
822 this_transfer
= min_t(int, sectors_to_transfer
,
823 rq
->current_nr_sectors
);
825 /* Read this_transfer sectors
826 into the current buffer. */
827 while (this_transfer
> 0) {
828 HWIF(drive
)->atapi_input_bytes(drive
, rq
->buffer
, SECTOR_SIZE
);
829 rq
->buffer
+= SECTOR_SIZE
;
831 --rq
->current_nr_sectors
;
834 --sectors_to_transfer
;
839 /* Done moving data! Wait for another interrupt. */
840 ide_set_handler(drive
, &cdrom_read_intr
, ATAPI_WAIT_PC
, NULL
);
845 * Try to satisfy some of the current read request from our cached data.
846 * Returns nonzero if the request has been completed, zero otherwise.
848 static int cdrom_read_from_buffer (ide_drive_t
*drive
)
850 struct cdrom_info
*info
= drive
->driver_data
;
851 struct request
*rq
= HWGROUP(drive
)->rq
;
852 unsigned short sectors_per_frame
;
854 sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
856 /* Can't do anything if there's no buffer. */
857 if (info
->buffer
== NULL
) return 0;
859 /* Loop while this request needs data and the next block is present
861 while (rq
->nr_sectors
> 0 &&
862 rq
->sector
>= info
->sector_buffered
&&
863 rq
->sector
< info
->sector_buffered
+ info
->nsectors_buffered
) {
864 if (rq
->current_nr_sectors
== 0)
865 cdrom_end_request(drive
, 1);
869 (rq
->sector
- info
->sector_buffered
) * SECTOR_SIZE
,
871 rq
->buffer
+= SECTOR_SIZE
;
872 --rq
->current_nr_sectors
;
877 /* If we've satisfied the current request,
878 terminate it successfully. */
879 if (rq
->nr_sectors
== 0) {
880 cdrom_end_request(drive
, 1);
884 /* Move on to the next buffer if needed. */
885 if (rq
->current_nr_sectors
== 0)
886 cdrom_end_request(drive
, 1);
888 /* If this condition does not hold, then the kluge i use to
889 represent the number of sectors to skip at the start of a transfer
890 will fail. I think that this will never happen, but let's be
891 paranoid and check. */
892 if (rq
->current_nr_sectors
< bio_cur_sectors(rq
->bio
) &&
893 (rq
->sector
& (sectors_per_frame
- 1))) {
894 printk(KERN_ERR
"%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
895 drive
->name
, (long)rq
->sector
);
896 cdrom_end_request(drive
, 0);
904 * Routine to send a read packet command to the drive.
905 * This is usually called directly from cdrom_start_read.
906 * However, for drq_interrupt devices, it is called from an interrupt
907 * when the drive is ready to accept the command.
909 static ide_startstop_t
cdrom_start_read_continuation (ide_drive_t
*drive
)
911 struct request
*rq
= HWGROUP(drive
)->rq
;
912 unsigned short sectors_per_frame
;
915 sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
917 /* If the requested sector doesn't start on a cdrom block boundary,
918 we must adjust the start of the transfer so that it does,
919 and remember to skip the first few sectors.
920 If the CURRENT_NR_SECTORS field is larger than the size
921 of the buffer, it will mean that we're to skip a number
922 of sectors equal to the amount by which CURRENT_NR_SECTORS
923 is larger than the buffer size. */
924 nskip
= rq
->sector
& (sectors_per_frame
- 1);
926 /* Sanity check... */
927 if (rq
->current_nr_sectors
!= bio_cur_sectors(rq
->bio
) &&
928 (rq
->sector
& (sectors_per_frame
- 1))) {
929 printk(KERN_ERR
"%s: cdrom_start_read_continuation: buffer botch (%u)\n",
930 drive
->name
, rq
->current_nr_sectors
);
931 cdrom_end_request(drive
, 0);
934 rq
->current_nr_sectors
+= nskip
;
937 /* Set up the command */
938 rq
->timeout
= ATAPI_WAIT_PC
;
940 /* Send the command to the drive and return. */
941 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_read_intr
);
945 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
946 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
947 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
949 static ide_startstop_t
cdrom_seek_intr (ide_drive_t
*drive
)
951 struct cdrom_info
*info
= drive
->driver_data
;
953 static int retry
= 10;
955 if (cdrom_decode_status(drive
, 0, &stat
))
958 info
->cd_flags
|= IDE_CD_FLAG_SEEKING
;
960 if (retry
&& time_after(jiffies
, info
->start_seek
+ IDECD_SEEK_TIMER
)) {
963 * this condition is far too common, to bother
966 /* printk("%s: disabled DSC seek overlap\n", drive->name);*/
967 drive
->dsc_overlap
= 0;
973 static ide_startstop_t
cdrom_start_seek_continuation (ide_drive_t
*drive
)
975 struct request
*rq
= HWGROUP(drive
)->rq
;
976 sector_t frame
= rq
->sector
;
978 sector_div(frame
, queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
);
980 memset(rq
->cmd
, 0, sizeof(rq
->cmd
));
981 rq
->cmd
[0] = GPCMD_SEEK
;
982 put_unaligned(cpu_to_be32(frame
), (unsigned int *) &rq
->cmd
[2]);
984 rq
->timeout
= ATAPI_WAIT_PC
;
985 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_seek_intr
);
988 static ide_startstop_t
cdrom_start_seek (ide_drive_t
*drive
, unsigned int block
)
990 struct cdrom_info
*info
= drive
->driver_data
;
993 info
->start_seek
= jiffies
;
994 return cdrom_start_packet_command(drive
, 0, cdrom_start_seek_continuation
);
997 /* Fix up a possibly partially-processed request so that we can
998 start it over entirely, or even put it back on the request queue. */
999 static void restore_request (struct request
*rq
)
1001 if (rq
->buffer
!= bio_data(rq
->bio
)) {
1002 sector_t n
= (rq
->buffer
- (char *) bio_data(rq
->bio
)) / SECTOR_SIZE
;
1004 rq
->buffer
= bio_data(rq
->bio
);
1005 rq
->nr_sectors
+= n
;
1008 rq
->hard_cur_sectors
= rq
->current_nr_sectors
= bio_cur_sectors(rq
->bio
);
1009 rq
->hard_nr_sectors
= rq
->nr_sectors
;
1010 rq
->hard_sector
= rq
->sector
;
1011 rq
->q
->prep_rq_fn(rq
->q
, rq
);
1015 * Start a read request from the CD-ROM.
1017 static ide_startstop_t
cdrom_start_read (ide_drive_t
*drive
, unsigned int block
)
1019 struct cdrom_info
*info
= drive
->driver_data
;
1020 struct request
*rq
= HWGROUP(drive
)->rq
;
1021 unsigned short sectors_per_frame
;
1023 sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1025 /* We may be retrying this request after an error. Fix up
1026 any weirdness which might be present in the request packet. */
1027 restore_request(rq
);
1029 /* Satisfy whatever we can of this request from our cached sector. */
1030 if (cdrom_read_from_buffer(drive
))
1033 /* Clear the local sector buffer. */
1034 info
->nsectors_buffered
= 0;
1036 /* use dma, if possible. */
1037 info
->dma
= drive
->using_dma
;
1038 if ((rq
->sector
& (sectors_per_frame
- 1)) ||
1039 (rq
->nr_sectors
& (sectors_per_frame
- 1)))
1042 /* Start sending the read request to the drive. */
1043 return cdrom_start_packet_command(drive
, 32768, cdrom_start_read_continuation
);
1046 /****************************************************************************
1047 * Execute all other packet commands.
1050 static void ide_cd_request_sense_fixup(struct request
*rq
)
1053 * Some of the trailing request sense fields are optional,
1054 * and some drives don't send them. Sigh.
1056 if (rq
->cmd
[0] == GPCMD_REQUEST_SENSE
&&
1057 rq
->data_len
> 0 && rq
->data_len
<= 5)
1058 while (rq
->data_len
> 0) {
1059 *(u8
*)rq
->data
++ = 0;
1064 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*);
1066 static ide_startstop_t
cdrom_do_pc_continuation (ide_drive_t
*drive
)
1068 struct request
*rq
= HWGROUP(drive
)->rq
;
1071 rq
->timeout
= ATAPI_WAIT_PC
;
1073 /* Send the command to the drive and return. */
1074 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
1077 static ide_startstop_t
cdrom_do_packet_command (ide_drive_t
*drive
)
1080 struct request
*rq
= HWGROUP(drive
)->rq
;
1081 struct cdrom_info
*info
= drive
->driver_data
;
1084 rq
->cmd_flags
&= ~REQ_FAILED
;
1087 /* Start sending the command to the drive. */
1088 return cdrom_start_packet_command(drive
, len
, cdrom_do_pc_continuation
);
1091 int ide_cd_queue_pc(ide_drive_t
*drive
, struct request
*rq
)
1093 struct request_sense sense
;
1095 unsigned int flags
= rq
->cmd_flags
;
1097 if (rq
->sense
== NULL
)
1100 /* Start of retry loop. */
1103 unsigned long time
= jiffies
;
1104 rq
->cmd_flags
= flags
;
1106 error
= ide_do_drive_cmd(drive
, rq
, ide_wait
);
1107 time
= jiffies
- time
;
1109 /* FIXME: we should probably abort/retry or something
1110 * in case of failure */
1111 if (rq
->cmd_flags
& REQ_FAILED
) {
1112 /* The request failed. Retry if it was due to a unit
1114 (usually means media was changed). */
1115 struct request_sense
*reqbuf
= rq
->sense
;
1117 if (reqbuf
->sense_key
== UNIT_ATTENTION
)
1118 cdrom_saw_media_change(drive
);
1119 else if (reqbuf
->sense_key
== NOT_READY
&&
1120 reqbuf
->asc
== 4 && reqbuf
->ascq
!= 4) {
1121 /* The drive is in the process of loading
1122 a disk. Retry, but wait a little to give
1123 the drive time to complete the load. */
1126 /* Otherwise, don't retry. */
1132 /* End of retry loop. */
1133 } while ((rq
->cmd_flags
& REQ_FAILED
) && retries
>= 0);
1135 /* Return an error if the command failed. */
1136 return (rq
->cmd_flags
& REQ_FAILED
) ? -EIO
: 0;
1142 static int cdrom_write_check_ireason(ide_drive_t
*drive
, int len
, int ireason
)
1144 /* Two notes about IDE interrupt reason here - 0 means that
1145 * the drive wants to receive data from us, 2 means that
1146 * the drive is expecting to transfer data to us.
1150 else if (ireason
== 2) {
1151 ide_hwif_t
*hwif
= drive
->hwif
;
1153 /* Whoops... The drive wants to send data. */
1154 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
1155 drive
->name
, __FUNCTION__
);
1157 ide_cd_pad_transfer(drive
, hwif
->atapi_input_bytes
, len
);
1159 /* Drive wants a command packet, or invalid ireason... */
1160 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
1161 drive
->name
, __FUNCTION__
, ireason
);
1164 cdrom_end_request(drive
, 0);
1169 * Called from blk_end_request_callback() after the data of the request
1170 * is completed and before the request is completed.
1171 * By returning value '1', blk_end_request_callback() returns immediately
1172 * without completing the request.
1174 static int cdrom_newpc_intr_dummy_cb(struct request
*rq
)
1180 * best way to deal with dma that is not sector aligned right now... note
1181 * that in this path we are not using ->data or ->buffer at all. this irs
1182 * can replace cdrom_read_intr() and cdrom_write_intr() in the future.
1184 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*drive
)
1186 struct cdrom_info
*info
= drive
->driver_data
;
1187 struct request
*rq
= HWGROUP(drive
)->rq
;
1188 xfer_func_t
*xferfunc
;
1189 ide_expiry_t
*expiry
;
1190 int dma_error
= 0, dma
, stat
, ireason
, len
, thislen
, uptodate
= 0;
1191 int write
= (rq_data_dir(rq
) == WRITE
) ? 1 : 0;
1192 unsigned int timeout
;
1195 /* Check for errors. */
1199 dma_error
= HWIF(drive
)->ide_dma_end(drive
);
1201 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
1202 write
? "write" : "read");
1207 if (cdrom_decode_status(drive
, 0, &stat
))
1211 * using dma, transfer is complete now
1215 return ide_error(drive
, "dma error", stat
);
1220 * ok we fall to pio :/
1222 ireason
= HWIF(drive
)->INB(IDE_IREASON_REG
) & 0x3;
1223 lowcyl
= HWIF(drive
)->INB(IDE_BCOUNTL_REG
);
1224 highcyl
= HWIF(drive
)->INB(IDE_BCOUNTH_REG
);
1226 len
= lowcyl
+ (256 * highcyl
);
1227 thislen
= rq
->data_len
;
1232 * If DRQ is clear, the command has completed.
1234 if ((stat
& DRQ_STAT
) == 0) {
1235 if (!blk_pc_request(rq
)) {
1236 ide_cd_request_sense_fixup(rq
);
1237 /* Complain if we still have data left to transfer. */
1238 uptodate
= rq
->data_len
? 0 : 1;
1244 * check which way to transfer data
1246 if (blk_pc_request(rq
) && rq_data_dir(rq
) == WRITE
) {
1250 if (cdrom_write_check_ireason(drive
, len
, ireason
))
1252 } else if (blk_pc_request(rq
)) {
1256 if (cdrom_read_check_ireason(drive
, len
, ireason
))
1262 xferfunc
= HWIF(drive
)->atapi_output_bytes
;
1263 } else if (ireason
== 2 || (ireason
== 1 && blk_pc_request(rq
))) {
1265 xferfunc
= HWIF(drive
)->atapi_input_bytes
;
1267 printk(KERN_ERR
"%s: %s: The drive "
1268 "appears confused (ireason = 0x%02x). "
1269 "Trying to recover by ending request.\n",
1270 drive
->name
, __FUNCTION__
, ireason
);
1277 while (thislen
> 0) {
1278 int blen
= blen
= rq
->data_len
;
1279 char *ptr
= rq
->data
;
1285 ptr
= bio_data(rq
->bio
);
1286 blen
= bio_iovec(rq
->bio
)->bv_len
;
1290 printk(KERN_ERR
"%s: confused, missing data\n",
1292 blk_dump_rq_flags(rq
, rq_data_dir(rq
)
1293 ? "cdrom_newpc_intr, write"
1294 : "cdrom_newpc_intr, read");
1301 xferfunc(drive
, ptr
, blen
);
1305 rq
->data_len
-= blen
;
1309 * The request can't be completed until DRQ is cleared.
1310 * So complete the data, but don't complete the request
1311 * using the dummy function for the callback feature
1312 * of blk_end_request_callback().
1314 blk_end_request_callback(rq
, 0, blen
,
1315 cdrom_newpc_intr_dummy_cb
);
1320 if (write
&& blk_sense_request(rq
))
1321 rq
->sense_len
+= thislen
;
1327 ide_cd_pad_transfer(drive
, xferfunc
, len
);
1329 if (blk_pc_request(rq
)) {
1330 timeout
= rq
->timeout
;
1333 timeout
= ATAPI_WAIT_PC
;
1334 expiry
= cdrom_timer_expiry
;
1337 ide_set_handler(drive
, cdrom_newpc_intr
, timeout
, expiry
);
1341 if (blk_pc_request(rq
)) {
1342 unsigned long flags
;
1344 spin_lock_irqsave(&ide_lock
, flags
);
1345 if (__blk_end_request(rq
, 0, rq
->data_len
))
1347 HWGROUP(drive
)->rq
= NULL
;
1348 spin_unlock_irqrestore(&ide_lock
, flags
);
1351 rq
->cmd_flags
|= REQ_FAILED
;
1352 cdrom_end_request(drive
, uptodate
);
1357 static ide_startstop_t
cdrom_write_intr(ide_drive_t
*drive
)
1359 int stat
, ireason
, len
, sectors_to_transfer
, uptodate
;
1360 struct cdrom_info
*info
= drive
->driver_data
;
1361 int dma_error
= 0, dma
= info
->dma
;
1362 u8 lowcyl
= 0, highcyl
= 0;
1364 struct request
*rq
= HWGROUP(drive
)->rq
;
1366 /* Check for errors. */
1369 dma_error
= HWIF(drive
)->ide_dma_end(drive
);
1371 printk(KERN_ERR
"%s: DMA write error\n", drive
->name
);
1376 if (cdrom_decode_status(drive
, 0, &stat
))
1380 * using dma, transfer is complete now
1384 return ide_error(drive
, "dma error", stat
);
1386 ide_end_request(drive
, 1, rq
->nr_sectors
);
1390 /* Read the interrupt reason and the transfer length. */
1391 ireason
= HWIF(drive
)->INB(IDE_IREASON_REG
) & 0x3;
1392 lowcyl
= HWIF(drive
)->INB(IDE_BCOUNTL_REG
);
1393 highcyl
= HWIF(drive
)->INB(IDE_BCOUNTH_REG
);
1395 len
= lowcyl
+ (256 * highcyl
);
1397 /* If DRQ is clear, the command has completed. */
1398 if ((stat
& DRQ_STAT
) == 0) {
1399 /* If we're not done writing, complain.
1400 * Otherwise, complete the command normally.
1403 if (rq
->current_nr_sectors
> 0) {
1404 printk(KERN_ERR
"%s: %s: data underrun (%d blocks)\n",
1405 drive
->name
, __FUNCTION__
,
1406 rq
->current_nr_sectors
);
1409 cdrom_end_request(drive
, uptodate
);
1413 /* Check that the drive is expecting to do the same thing we are. */
1414 if (cdrom_write_check_ireason(drive
, len
, ireason
))
1417 sectors_to_transfer
= len
/ SECTOR_SIZE
;
1420 * now loop and write out the data
1422 while (sectors_to_transfer
> 0) {
1425 if (!rq
->current_nr_sectors
) {
1426 printk(KERN_ERR
"%s: %s: confused, missing data\n",
1427 drive
->name
, __FUNCTION__
);
1432 * Figure out how many sectors we can transfer
1434 this_transfer
= min_t(int, sectors_to_transfer
, rq
->current_nr_sectors
);
1436 while (this_transfer
> 0) {
1437 HWIF(drive
)->atapi_output_bytes(drive
, rq
->buffer
, SECTOR_SIZE
);
1438 rq
->buffer
+= SECTOR_SIZE
;
1440 --rq
->current_nr_sectors
;
1443 --sectors_to_transfer
;
1447 * current buffer complete, move on
1449 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
1450 cdrom_end_request(drive
, 1);
1453 /* re-arm handler */
1454 ide_set_handler(drive
, &cdrom_write_intr
, ATAPI_WAIT_PC
, NULL
);
1458 static ide_startstop_t
cdrom_start_write_cont(ide_drive_t
*drive
)
1460 struct request
*rq
= HWGROUP(drive
)->rq
;
1462 #if 0 /* the immediate bit */
1463 rq
->cmd
[1] = 1 << 3;
1465 rq
->timeout
= ATAPI_WAIT_PC
;
1467 return cdrom_transfer_packet_command(drive
, rq
, cdrom_write_intr
);
1470 static ide_startstop_t
cdrom_start_write(ide_drive_t
*drive
, struct request
*rq
)
1472 struct cdrom_info
*info
= drive
->driver_data
;
1473 struct gendisk
*g
= info
->disk
;
1474 unsigned short sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1477 * writes *must* be hardware frame aligned
1479 if ((rq
->nr_sectors
& (sectors_per_frame
- 1)) ||
1480 (rq
->sector
& (sectors_per_frame
- 1))) {
1481 cdrom_end_request(drive
, 0);
1486 * disk has become write protected
1489 cdrom_end_request(drive
, 0);
1493 info
->nsectors_buffered
= 0;
1495 /* use dma, if possible. we don't need to check more, since we
1496 * know that the transfer is always (at least!) frame aligned */
1497 info
->dma
= drive
->using_dma
? 1 : 0;
1499 info
->devinfo
.media_written
= 1;
1501 /* Start sending the write request to the drive. */
1502 return cdrom_start_packet_command(drive
, 32768, cdrom_start_write_cont
);
1505 static ide_startstop_t
cdrom_do_newpc_cont(ide_drive_t
*drive
)
1507 struct request
*rq
= HWGROUP(drive
)->rq
;
1510 rq
->timeout
= ATAPI_WAIT_PC
;
1512 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
1515 static ide_startstop_t
cdrom_do_block_pc(ide_drive_t
*drive
, struct request
*rq
)
1517 struct cdrom_info
*info
= drive
->driver_data
;
1519 rq
->cmd_flags
|= REQ_QUIET
;
1527 int mask
= drive
->queue
->dma_alignment
;
1528 unsigned long addr
= (unsigned long) page_address(bio_page(rq
->bio
));
1530 info
->dma
= drive
->using_dma
;
1533 * check if dma is safe
1535 * NOTE! The "len" and "addr" checks should possibly have
1538 if ((rq
->data_len
& 15) || (addr
& mask
))
1542 /* Start sending the command to the drive. */
1543 return cdrom_start_packet_command(drive
, rq
->data_len
, cdrom_do_newpc_cont
);
1546 /****************************************************************************
1547 * cdrom driver request routine.
1549 static ide_startstop_t
1550 ide_do_rw_cdrom (ide_drive_t
*drive
, struct request
*rq
, sector_t block
)
1552 ide_startstop_t action
;
1553 struct cdrom_info
*info
= drive
->driver_data
;
1555 if (blk_fs_request(rq
)) {
1556 if (info
->cd_flags
& IDE_CD_FLAG_SEEKING
) {
1557 unsigned long elapsed
= jiffies
- info
->start_seek
;
1558 int stat
= HWIF(drive
)->INB(IDE_STATUS_REG
);
1560 if ((stat
& SEEK_STAT
) != SEEK_STAT
) {
1561 if (elapsed
< IDECD_SEEK_TIMEOUT
) {
1562 ide_stall_queue(drive
, IDECD_SEEK_TIMER
);
1565 printk (KERN_ERR
"%s: DSC timeout\n", drive
->name
);
1567 info
->cd_flags
&= ~IDE_CD_FLAG_SEEKING
;
1569 if ((rq_data_dir(rq
) == READ
) && IDE_LARGE_SEEK(info
->last_block
, block
, IDECD_SEEK_THRESHOLD
) && drive
->dsc_overlap
) {
1570 action
= cdrom_start_seek(drive
, block
);
1572 if (rq_data_dir(rq
) == READ
)
1573 action
= cdrom_start_read(drive
, block
);
1575 action
= cdrom_start_write(drive
, rq
);
1577 info
->last_block
= block
;
1579 } else if (rq
->cmd_type
== REQ_TYPE_SENSE
||
1580 rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
1581 return cdrom_do_packet_command(drive
);
1582 } else if (blk_pc_request(rq
)) {
1583 return cdrom_do_block_pc(drive
, rq
);
1584 } else if (blk_special_request(rq
)) {
1586 * right now this can only be a reset...
1588 cdrom_end_request(drive
, 1);
1592 blk_dump_rq_flags(rq
, "ide-cd bad flags");
1593 cdrom_end_request(drive
, 0);
1599 /****************************************************************************
1602 * Routines which queue packet commands take as a final argument a pointer
1603 * to a request_sense struct. If execution of the command results
1604 * in an error with a CHECK CONDITION status, this structure will be filled
1605 * with the results of the subsequent request sense command. The pointer
1606 * can also be NULL, in which case no sense information is returned.
1610 void msf_from_bcd (struct atapi_msf
*msf
)
1612 msf
->minute
= BCD2BIN(msf
->minute
);
1613 msf
->second
= BCD2BIN(msf
->second
);
1614 msf
->frame
= BCD2BIN(msf
->frame
);
1617 static int cdrom_check_status(ide_drive_t
*drive
, struct request_sense
*sense
)
1620 struct cdrom_info
*info
= drive
->driver_data
;
1621 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1623 ide_cd_init_rq(drive
, &req
);
1626 req
.cmd
[0] = GPCMD_TEST_UNIT_READY
;
1627 req
.cmd_flags
|= REQ_QUIET
;
1630 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
1631 * switch CDs instead of supporting the LOAD_UNLOAD opcode.
1633 req
.cmd
[7] = cdi
->sanyo_slot
% 3;
1635 return ide_cd_queue_pc(drive
, &req
);
1638 /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
1639 int ide_cd_lockdoor(ide_drive_t
*drive
, int lockflag
,
1640 struct request_sense
*sense
)
1642 struct cdrom_info
*cd
= drive
->driver_data
;
1643 struct request_sense my_sense
;
1650 /* If the drive cannot lock the door, just pretend. */
1651 if (cd
->cd_flags
& IDE_CD_FLAG_NO_DOORLOCK
) {
1654 ide_cd_init_rq(drive
, &req
);
1656 req
.cmd
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
1657 req
.cmd
[4] = lockflag
? 1 : 0;
1658 stat
= ide_cd_queue_pc(drive
, &req
);
1661 /* If we got an illegal field error, the drive
1662 probably cannot lock the door. */
1664 sense
->sense_key
== ILLEGAL_REQUEST
&&
1665 (sense
->asc
== 0x24 || sense
->asc
== 0x20)) {
1666 printk (KERN_ERR
"%s: door locking not supported\n",
1668 cd
->cd_flags
|= IDE_CD_FLAG_NO_DOORLOCK
;
1672 /* no medium, that's alright. */
1673 if (stat
!= 0 && sense
->sense_key
== NOT_READY
&& sense
->asc
== 0x3a)
1678 cd
->cd_flags
|= IDE_CD_FLAG_DOOR_LOCKED
;
1680 cd
->cd_flags
&= ~IDE_CD_FLAG_DOOR_LOCKED
;
1687 /* Eject the disk if EJECTFLAG is 0.
1688 If EJECTFLAG is 1, try to reload the disk. */
1689 static int cdrom_eject(ide_drive_t
*drive
, int ejectflag
,
1690 struct request_sense
*sense
)
1692 struct cdrom_info
*cd
= drive
->driver_data
;
1693 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1697 if ((cd
->cd_flags
& IDE_CD_FLAG_NO_EJECT
) && !ejectflag
)
1698 return -EDRIVE_CANT_DO_THIS
;
1700 /* reload fails on some drives, if the tray is locked */
1701 if ((cd
->cd_flags
& IDE_CD_FLAG_DOOR_LOCKED
) && ejectflag
)
1704 ide_cd_init_rq(drive
, &req
);
1706 /* only tell drive to close tray if open, if it can do that */
1707 if (ejectflag
&& (cdi
->mask
& CDC_CLOSE_TRAY
))
1711 req
.cmd
[0] = GPCMD_START_STOP_UNIT
;
1712 req
.cmd
[4] = loej
| (ejectflag
!= 0);
1714 return ide_cd_queue_pc(drive
, &req
);
1717 static int cdrom_read_capacity(ide_drive_t
*drive
, unsigned long *capacity
,
1718 unsigned long *sectors_per_frame
,
1719 struct request_sense
*sense
)
1729 ide_cd_init_rq(drive
, &req
);
1732 req
.cmd
[0] = GPCMD_READ_CDVD_CAPACITY
;
1733 req
.data
= (char *)&capbuf
;
1734 req
.data_len
= sizeof(capbuf
);
1735 req
.cmd_flags
|= REQ_QUIET
;
1737 stat
= ide_cd_queue_pc(drive
, &req
);
1739 *capacity
= 1 + be32_to_cpu(capbuf
.lba
);
1740 *sectors_per_frame
=
1741 be32_to_cpu(capbuf
.blocklen
) >> SECTOR_BITS
;
1747 static int cdrom_read_tocentry(ide_drive_t
*drive
, int trackno
, int msf_flag
,
1748 int format
, char *buf
, int buflen
,
1749 struct request_sense
*sense
)
1753 ide_cd_init_rq(drive
, &req
);
1757 req
.data_len
= buflen
;
1758 req
.cmd_flags
|= REQ_QUIET
;
1759 req
.cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
1760 req
.cmd
[6] = trackno
;
1761 req
.cmd
[7] = (buflen
>> 8);
1762 req
.cmd
[8] = (buflen
& 0xff);
1763 req
.cmd
[9] = (format
<< 6);
1768 return ide_cd_queue_pc(drive
, &req
);
1771 /* Try to read the entire TOC for the disk into our internal buffer. */
1772 int ide_cd_read_toc(ide_drive_t
*drive
, struct request_sense
*sense
)
1774 int stat
, ntracks
, i
;
1775 struct cdrom_info
*info
= drive
->driver_data
;
1776 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1777 struct atapi_toc
*toc
= info
->toc
;
1779 struct atapi_toc_header hdr
;
1780 struct atapi_toc_entry ent
;
1783 unsigned long sectors_per_frame
= SECTORS_PER_FRAME
;
1786 /* Try to allocate space. */
1787 toc
= kmalloc(sizeof(struct atapi_toc
), GFP_KERNEL
);
1789 printk (KERN_ERR
"%s: No cdrom TOC buffer!\n", drive
->name
);
1795 /* Check to see if the existing data is still valid.
1796 If it is, just return. */
1797 (void) cdrom_check_status(drive
, sense
);
1799 if (info
->cd_flags
& IDE_CD_FLAG_TOC_VALID
)
1802 /* Try to get the total cdrom capacity and sector size. */
1803 stat
= cdrom_read_capacity(drive
, &toc
->capacity
, §ors_per_frame
,
1806 toc
->capacity
= 0x1fffff;
1808 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1809 /* Save a private copy of te TOC capacity for error handling */
1810 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1812 blk_queue_hardsect_size(drive
->queue
,
1813 sectors_per_frame
<< SECTOR_BITS
);
1815 /* First read just the header, so we know how long the TOC is. */
1816 stat
= cdrom_read_tocentry(drive
, 0, 1, 0, (char *) &toc
->hdr
,
1817 sizeof(struct atapi_toc_header
), sense
);
1821 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1822 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1823 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1826 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
1829 if (ntracks
> MAX_TRACKS
)
1830 ntracks
= MAX_TRACKS
;
1832 /* Now read the whole schmeer. */
1833 stat
= cdrom_read_tocentry(drive
, toc
->hdr
.first_track
, 1, 0,
1835 sizeof(struct atapi_toc_header
) +
1837 sizeof(struct atapi_toc_entry
), sense
);
1839 if (stat
&& toc
->hdr
.first_track
> 1) {
1840 /* Cds with CDI tracks only don't have any TOC entries,
1841 despite of this the returned values are
1842 first_track == last_track = number of CDI tracks + 1,
1843 so that this case is indistinguishable from the same
1844 layout plus an additional audio track.
1845 If we get an error for the regular case, we assume
1846 a CDI without additional audio tracks. In this case
1847 the readable TOC is empty (CDI tracks are not included)
1848 and only holds the Leadout entry. Heiko Eißfeldt */
1850 stat
= cdrom_read_tocentry(drive
, CDROM_LEADOUT
, 1, 0,
1852 sizeof(struct atapi_toc_header
) +
1854 sizeof(struct atapi_toc_entry
),
1859 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1860 toc
->hdr
.first_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1861 toc
->hdr
.last_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1863 toc
->hdr
.first_track
= CDROM_LEADOUT
;
1864 toc
->hdr
.last_track
= CDROM_LEADOUT
;
1871 toc
->hdr
.toc_length
= ntohs (toc
->hdr
.toc_length
);
1873 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
) {
1874 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1875 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1878 for (i
= 0; i
<= ntracks
; i
++) {
1879 if (info
->cd_flags
& IDE_CD_FLAG_TOCADDR_AS_BCD
) {
1880 if (info
->cd_flags
& IDE_CD_FLAG_TOCTRACKS_AS_BCD
)
1881 toc
->ent
[i
].track
= BCD2BIN(toc
->ent
[i
].track
);
1882 msf_from_bcd(&toc
->ent
[i
].addr
.msf
);
1884 toc
->ent
[i
].addr
.lba
= msf_to_lba (toc
->ent
[i
].addr
.msf
.minute
,
1885 toc
->ent
[i
].addr
.msf
.second
,
1886 toc
->ent
[i
].addr
.msf
.frame
);
1889 /* Read the multisession information. */
1890 if (toc
->hdr
.first_track
!= CDROM_LEADOUT
) {
1891 /* Read the multisession information. */
1892 stat
= cdrom_read_tocentry(drive
, 0, 0, 1, (char *)&ms_tmp
,
1893 sizeof(ms_tmp
), sense
);
1897 toc
->last_session_lba
= be32_to_cpu(ms_tmp
.ent
.addr
.lba
);
1899 ms_tmp
.hdr
.first_track
= ms_tmp
.hdr
.last_track
= CDROM_LEADOUT
;
1900 toc
->last_session_lba
= msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1903 if (info
->cd_flags
& IDE_CD_FLAG_TOCADDR_AS_BCD
) {
1904 /* Re-read multisession information using MSF format */
1905 stat
= cdrom_read_tocentry(drive
, 0, 1, 1, (char *)&ms_tmp
,
1906 sizeof(ms_tmp
), sense
);
1910 msf_from_bcd (&ms_tmp
.ent
.addr
.msf
);
1911 toc
->last_session_lba
= msf_to_lba(ms_tmp
.ent
.addr
.msf
.minute
,
1912 ms_tmp
.ent
.addr
.msf
.second
,
1913 ms_tmp
.ent
.addr
.msf
.frame
);
1916 toc
->xa_flag
= (ms_tmp
.hdr
.first_track
!= ms_tmp
.hdr
.last_track
);
1918 /* Now try to get the total cdrom capacity. */
1919 stat
= cdrom_get_last_written(cdi
, &last_written
);
1920 if (!stat
&& (last_written
> toc
->capacity
)) {
1921 toc
->capacity
= last_written
;
1922 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1923 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1926 /* Remember that we've read this stuff. */
1927 info
->cd_flags
|= IDE_CD_FLAG_TOC_VALID
;
1932 /* the generic packet interface to cdrom.c */
1933 static int ide_cdrom_packet(struct cdrom_device_info
*cdi
,
1934 struct packet_command
*cgc
)
1937 ide_drive_t
*drive
= cdi
->handle
;
1939 if (cgc
->timeout
<= 0)
1940 cgc
->timeout
= ATAPI_WAIT_PC
;
1942 /* here we queue the commands from the uniform CD-ROM
1943 layer. the packet must be complete, as we do not
1945 ide_cd_init_rq(drive
, &req
);
1946 memcpy(req
.cmd
, cgc
->cmd
, CDROM_PACKET_SIZE
);
1948 memset(cgc
->sense
, 0, sizeof(struct request_sense
));
1949 req
.data
= cgc
->buffer
;
1950 req
.data_len
= cgc
->buflen
;
1951 req
.timeout
= cgc
->timeout
;
1954 req
.cmd_flags
|= REQ_QUIET
;
1956 req
.sense
= cgc
->sense
;
1957 cgc
->stat
= ide_cd_queue_pc(drive
, &req
);
1959 cgc
->buflen
-= req
.data_len
;
1964 int ide_cdrom_tray_move (struct cdrom_device_info
*cdi
, int position
)
1966 ide_drive_t
*drive
= cdi
->handle
;
1967 struct request_sense sense
;
1970 int stat
= ide_cd_lockdoor(drive
, 0, &sense
);
1976 return cdrom_eject(drive
, !position
, &sense
);
1979 int ide_cdrom_get_capabilities(ide_drive_t
*drive
, u8
*buf
)
1981 struct cdrom_info
*info
= drive
->driver_data
;
1982 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1983 struct packet_command cgc
;
1984 int stat
, attempts
= 3, size
= ATAPI_CAPABILITIES_PAGE_SIZE
;
1986 if ((info
->cd_flags
& IDE_CD_FLAG_FULL_CAPS_PAGE
) == 0)
1987 size
-= ATAPI_CAPABILITIES_PAGE_PAD_SIZE
;
1989 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_UNKNOWN
);
1990 do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
1991 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CAPABILITIES_PAGE
, 0);
1994 } while (--attempts
);
1998 void ide_cdrom_update_speed(ide_drive_t
*drive
, u8
*buf
)
2000 struct cdrom_info
*cd
= drive
->driver_data
;
2001 u16 curspeed
, maxspeed
;
2003 curspeed
= *(u16
*)&buf
[8 + 14];
2004 maxspeed
= *(u16
*)&buf
[8 + 8];
2006 if (cd
->cd_flags
& IDE_CD_FLAG_LE_SPEED_FIELDS
) {
2007 curspeed
= le16_to_cpu(curspeed
);
2008 maxspeed
= le16_to_cpu(maxspeed
);
2010 curspeed
= be16_to_cpu(curspeed
);
2011 maxspeed
= be16_to_cpu(maxspeed
);
2014 cd
->current_speed
= (curspeed
+ (176/2)) / 176;
2015 cd
->max_speed
= (maxspeed
+ (176/2)) / 176;
2019 * add logic to try GET_EVENT command first to check for media and tray
2020 * status. this should be supported by newer cd-r/w and all DVD etc
2024 int ide_cdrom_drive_status (struct cdrom_device_info
*cdi
, int slot_nr
)
2026 ide_drive_t
*drive
= cdi
->handle
;
2027 struct media_event_desc med
;
2028 struct request_sense sense
;
2031 if (slot_nr
!= CDSL_CURRENT
)
2034 stat
= cdrom_check_status(drive
, &sense
);
2035 if (!stat
|| sense
.sense_key
== UNIT_ATTENTION
)
2038 if (!cdrom_get_media_event(cdi
, &med
)) {
2039 if (med
.media_present
)
2041 else if (med
.door_open
)
2042 return CDS_TRAY_OPEN
;
2047 if (sense
.sense_key
== NOT_READY
&& sense
.asc
== 0x04 && sense
.ascq
== 0x04)
2051 * If not using Mt Fuji extended media tray reports,
2052 * just return TRAY_OPEN since ATAPI doesn't provide
2053 * any other way to detect this...
2055 if (sense
.sense_key
== NOT_READY
) {
2056 if (sense
.asc
== 0x3a && sense
.ascq
== 1)
2059 return CDS_TRAY_OPEN
;
2061 return CDS_DRIVE_NOT_READY
;
2064 /****************************************************************************
2065 * Other driver requests (open, close, check media change).
2069 int ide_cdrom_check_media_change_real (struct cdrom_device_info
*cdi
,
2072 ide_drive_t
*drive
= cdi
->handle
;
2073 struct cdrom_info
*cd
= drive
->driver_data
;
2076 if (slot_nr
== CDSL_CURRENT
) {
2077 (void) cdrom_check_status(drive
, NULL
);
2078 retval
= (cd
->cd_flags
& IDE_CD_FLAG_MEDIA_CHANGED
) ? 1 : 0;
2079 cd
->cd_flags
&= ~IDE_CD_FLAG_MEDIA_CHANGED
;
2088 int ide_cdrom_open_real (struct cdrom_device_info
*cdi
, int purpose
)
2094 * Close down the device. Invalidate all cached blocks.
2098 void ide_cdrom_release_real (struct cdrom_device_info
*cdi
)
2100 ide_drive_t
*drive
= cdi
->handle
;
2101 struct cdrom_info
*cd
= drive
->driver_data
;
2103 if (!cdi
->use_count
)
2104 cd
->cd_flags
&= ~IDE_CD_FLAG_TOC_VALID
;
2107 #define IDE_CD_CAPABILITIES \
2108 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
2109 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
2110 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
2111 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
2112 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
2114 static struct cdrom_device_ops ide_cdrom_dops
= {
2115 .open
= ide_cdrom_open_real
,
2116 .release
= ide_cdrom_release_real
,
2117 .drive_status
= ide_cdrom_drive_status
,
2118 .media_changed
= ide_cdrom_check_media_change_real
,
2119 .tray_move
= ide_cdrom_tray_move
,
2120 .lock_door
= ide_cdrom_lock_door
,
2121 .select_speed
= ide_cdrom_select_speed
,
2122 .get_last_session
= ide_cdrom_get_last_session
,
2123 .get_mcn
= ide_cdrom_get_mcn
,
2124 .reset
= ide_cdrom_reset
,
2125 .audio_ioctl
= ide_cdrom_audio_ioctl
,
2126 .capability
= IDE_CD_CAPABILITIES
,
2127 .generic_packet
= ide_cdrom_packet
,
2130 static int ide_cdrom_register (ide_drive_t
*drive
, int nslots
)
2132 struct cdrom_info
*info
= drive
->driver_data
;
2133 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
2135 devinfo
->ops
= &ide_cdrom_dops
;
2136 devinfo
->speed
= info
->current_speed
;
2137 devinfo
->capacity
= nslots
;
2138 devinfo
->handle
= drive
;
2139 strcpy(devinfo
->name
, drive
->name
);
2141 if (info
->cd_flags
& IDE_CD_FLAG_NO_SPEED_SELECT
)
2142 devinfo
->mask
|= CDC_SELECT_SPEED
;
2144 devinfo
->disk
= info
->disk
;
2145 return register_cdrom(devinfo
);
2149 int ide_cdrom_probe_capabilities (ide_drive_t
*drive
)
2151 struct cdrom_info
*cd
= drive
->driver_data
;
2152 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
2153 u8 buf
[ATAPI_CAPABILITIES_PAGE_SIZE
];
2154 mechtype_t mechtype
;
2157 cdi
->mask
= (CDC_CD_R
| CDC_CD_RW
| CDC_DVD
| CDC_DVD_R
|
2158 CDC_DVD_RAM
| CDC_SELECT_DISC
| CDC_PLAY_AUDIO
|
2159 CDC_MO_DRIVE
| CDC_RAM
);
2161 if (drive
->media
== ide_optical
) {
2162 cdi
->mask
&= ~(CDC_MO_DRIVE
| CDC_RAM
);
2163 printk(KERN_ERR
"%s: ATAPI magneto-optical drive\n", drive
->name
);
2167 if (cd
->cd_flags
& IDE_CD_FLAG_PRE_ATAPI12
) {
2168 cd
->cd_flags
&= ~IDE_CD_FLAG_NO_EJECT
;
2169 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
2174 * we have to cheat a little here. the packet will eventually
2175 * be queued with ide_cdrom_packet(), which extracts the
2176 * drive from cdi->handle. Since this device hasn't been
2177 * registered with the Uniform layer yet, it can't do this.
2178 * Same goes for cdi->ops.
2180 cdi
->handle
= drive
;
2181 cdi
->ops
= &ide_cdrom_dops
;
2183 if (ide_cdrom_get_capabilities(drive
, buf
))
2186 if ((buf
[8 + 6] & 0x01) == 0)
2187 cd
->cd_flags
|= IDE_CD_FLAG_NO_DOORLOCK
;
2188 if (buf
[8 + 6] & 0x08)
2189 cd
->cd_flags
&= ~IDE_CD_FLAG_NO_EJECT
;
2190 if (buf
[8 + 3] & 0x01)
2191 cdi
->mask
&= ~CDC_CD_R
;
2192 if (buf
[8 + 3] & 0x02)
2193 cdi
->mask
&= ~(CDC_CD_RW
| CDC_RAM
);
2194 if (buf
[8 + 2] & 0x38)
2195 cdi
->mask
&= ~CDC_DVD
;
2196 if (buf
[8 + 3] & 0x20)
2197 cdi
->mask
&= ~(CDC_DVD_RAM
| CDC_RAM
);
2198 if (buf
[8 + 3] & 0x10)
2199 cdi
->mask
&= ~CDC_DVD_R
;
2200 if ((buf
[8 + 4] & 0x01) || (cd
->cd_flags
& IDE_CD_FLAG_PLAY_AUDIO_OK
))
2201 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
2203 mechtype
= buf
[8 + 6] >> 5;
2204 if (mechtype
== mechtype_caddy
|| mechtype
== mechtype_popup
)
2205 cdi
->mask
|= CDC_CLOSE_TRAY
;
2207 if (cdi
->sanyo_slot
> 0) {
2208 cdi
->mask
&= ~CDC_SELECT_DISC
;
2210 } else if (mechtype
== mechtype_individual_changer
||
2211 mechtype
== mechtype_cartridge_changer
) {
2212 nslots
= cdrom_number_of_slots(cdi
);
2214 cdi
->mask
&= ~CDC_SELECT_DISC
;
2217 ide_cdrom_update_speed(drive
, buf
);
2219 printk(KERN_INFO
"%s: ATAPI", drive
->name
);
2221 /* don't print speed if the drive reported 0 */
2223 printk(KERN_CONT
" %dX", cd
->max_speed
);
2225 printk(KERN_CONT
" %s", (cdi
->mask
& CDC_DVD
) ? "CD-ROM" : "DVD-ROM");
2227 if ((cdi
->mask
& CDC_DVD_R
) == 0 || (cdi
->mask
& CDC_DVD_RAM
) == 0)
2228 printk(KERN_CONT
" DVD%s%s",
2229 (cdi
->mask
& CDC_DVD_R
) ? "" : "-R",
2230 (cdi
->mask
& CDC_DVD_RAM
) ? "" : "-RAM");
2232 if ((cdi
->mask
& CDC_CD_R
) == 0 || (cdi
->mask
& CDC_CD_RW
) == 0)
2233 printk(KERN_CONT
" CD%s%s",
2234 (cdi
->mask
& CDC_CD_R
) ? "" : "-R",
2235 (cdi
->mask
& CDC_CD_RW
) ? "" : "/RW");
2237 if ((cdi
->mask
& CDC_SELECT_DISC
) == 0)
2238 printk(KERN_CONT
" changer w/%d slots", nslots
);
2240 printk(KERN_CONT
" drive");
2242 printk(KERN_CONT
", %dkB Cache\n", be16_to_cpu(*(u16
*)&buf
[8 + 12]));
2247 #ifdef CONFIG_IDE_PROC_FS
2248 static void ide_cdrom_add_settings(ide_drive_t
*drive
)
2250 ide_add_setting(drive
, "dsc_overlap", SETTING_RW
, TYPE_BYTE
, 0, 1, 1, 1, &drive
->dsc_overlap
, NULL
);
2253 static inline void ide_cdrom_add_settings(ide_drive_t
*drive
) { ; }
2257 * standard prep_rq_fn that builds 10 byte cmds
2259 static int ide_cdrom_prep_fs(struct request_queue
*q
, struct request
*rq
)
2261 int hard_sect
= queue_hardsect_size(q
);
2262 long block
= (long)rq
->hard_sector
/ (hard_sect
>> 9);
2263 unsigned long blocks
= rq
->hard_nr_sectors
/ (hard_sect
>> 9);
2265 memset(rq
->cmd
, 0, sizeof(rq
->cmd
));
2267 if (rq_data_dir(rq
) == READ
)
2268 rq
->cmd
[0] = GPCMD_READ_10
;
2270 rq
->cmd
[0] = GPCMD_WRITE_10
;
2275 rq
->cmd
[2] = (block
>> 24) & 0xff;
2276 rq
->cmd
[3] = (block
>> 16) & 0xff;
2277 rq
->cmd
[4] = (block
>> 8) & 0xff;
2278 rq
->cmd
[5] = block
& 0xff;
2281 * and transfer length
2283 rq
->cmd
[7] = (blocks
>> 8) & 0xff;
2284 rq
->cmd
[8] = blocks
& 0xff;
2290 * Most of the SCSI commands are supported directly by ATAPI devices.
2291 * This transform handles the few exceptions.
2293 static int ide_cdrom_prep_pc(struct request
*rq
)
2298 * Transform 6-byte read/write commands to the 10-byte version
2300 if (c
[0] == READ_6
|| c
[0] == WRITE_6
) {
2307 c
[0] += (READ_10
- READ_6
);
2313 * it's silly to pretend we understand 6-byte sense commands, just
2314 * reject with ILLEGAL_REQUEST and the caller should take the
2315 * appropriate action
2317 if (c
[0] == MODE_SENSE
|| c
[0] == MODE_SELECT
) {
2318 rq
->errors
= ILLEGAL_REQUEST
;
2319 return BLKPREP_KILL
;
2325 static int ide_cdrom_prep_fn(struct request_queue
*q
, struct request
*rq
)
2327 if (blk_fs_request(rq
))
2328 return ide_cdrom_prep_fs(q
, rq
);
2329 else if (blk_pc_request(rq
))
2330 return ide_cdrom_prep_pc(rq
);
2335 struct cd_list_entry
{
2336 const char *id_model
;
2337 const char *id_firmware
;
2338 unsigned int cd_flags
;
2341 static const struct cd_list_entry ide_cd_quirks_list
[] = {
2342 /* Limit transfer size per interrupt. */
2343 { "SAMSUNG CD-ROM SCR-2430", NULL
, IDE_CD_FLAG_LIMIT_NFRAMES
},
2344 { "SAMSUNG CD-ROM SCR-2432", NULL
, IDE_CD_FLAG_LIMIT_NFRAMES
},
2345 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
2346 { "SAMSUNG CD-ROM SCR-3231", NULL
, IDE_CD_FLAG_NO_SPEED_SELECT
},
2347 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
2348 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD
|
2349 IDE_CD_FLAG_PRE_ATAPI12
, },
2350 /* Vertos 300, some versions of this drive like to talk BCD. */
2351 { "V003S0DS", NULL
, IDE_CD_FLAG_VERTOS_300_SSD
, },
2352 /* Vertos 600 ESD. */
2353 { "V006E0DS", NULL
, IDE_CD_FLAG_VERTOS_600_ESD
, },
2355 * Sanyo 3 CD changer uses a non-standard command for CD changing
2356 * (by default standard ATAPI support for CD changers is used).
2358 { "CD-ROM CDR-C3 G", NULL
, IDE_CD_FLAG_SANYO_3CD
},
2359 { "CD-ROM CDR-C3G", NULL
, IDE_CD_FLAG_SANYO_3CD
},
2360 { "CD-ROM CDR_C36", NULL
, IDE_CD_FLAG_SANYO_3CD
},
2361 /* Stingray 8X CD-ROM. */
2362 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL
, IDE_CD_FLAG_PRE_ATAPI12
},
2364 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
2365 * mode sense page capabilities size, but older drives break.
2367 { "ATAPI CD ROM DRIVE 50X MAX", NULL
, IDE_CD_FLAG_FULL_CAPS_PAGE
},
2368 { "WPI CDS-32X", NULL
, IDE_CD_FLAG_FULL_CAPS_PAGE
},
2369 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
2370 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS
},
2372 * Some drives used by Apple don't advertise audio play
2373 * but they do support reading TOC & audio datas.
2375 { "MATSHITADVD-ROM SR-8187", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
2376 { "MATSHITADVD-ROM SR-8186", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
2377 { "MATSHITADVD-ROM SR-8176", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
2378 { "MATSHITADVD-ROM SR-8174", NULL
, IDE_CD_FLAG_PLAY_AUDIO_OK
},
2382 static unsigned int ide_cd_flags(struct hd_driveid
*id
)
2384 const struct cd_list_entry
*cle
= ide_cd_quirks_list
;
2386 while (cle
->id_model
) {
2387 if (strcmp(cle
->id_model
, id
->model
) == 0 &&
2388 (cle
->id_firmware
== NULL
||
2389 strstr(id
->fw_rev
, cle
->id_firmware
)))
2390 return cle
->cd_flags
;
2398 int ide_cdrom_setup (ide_drive_t
*drive
)
2400 struct cdrom_info
*cd
= drive
->driver_data
;
2401 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
2402 struct hd_driveid
*id
= drive
->id
;
2405 blk_queue_prep_rq(drive
->queue
, ide_cdrom_prep_fn
);
2406 blk_queue_dma_alignment(drive
->queue
, 31);
2407 drive
->queue
->unplug_delay
= (1 * HZ
) / 1000;
2408 if (!drive
->queue
->unplug_delay
)
2409 drive
->queue
->unplug_delay
= 1;
2411 drive
->special
.all
= 0;
2413 cd
->cd_flags
= IDE_CD_FLAG_MEDIA_CHANGED
| IDE_CD_FLAG_NO_EJECT
|
2416 if ((id
->config
& 0x0060) == 0x20)
2417 cd
->cd_flags
|= IDE_CD_FLAG_DRQ_INTERRUPT
;
2419 if ((cd
->cd_flags
& IDE_CD_FLAG_VERTOS_300_SSD
) &&
2420 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
2421 cd
->cd_flags
|= (IDE_CD_FLAG_TOCTRACKS_AS_BCD
|
2422 IDE_CD_FLAG_TOCADDR_AS_BCD
);
2423 else if ((cd
->cd_flags
& IDE_CD_FLAG_VERTOS_600_ESD
) &&
2424 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
2425 cd
->cd_flags
|= IDE_CD_FLAG_TOCTRACKS_AS_BCD
;
2426 else if (cd
->cd_flags
& IDE_CD_FLAG_SANYO_3CD
)
2427 cdi
->sanyo_slot
= 3; /* 3 => use CD in slot 0 */
2429 nslots
= ide_cdrom_probe_capabilities (drive
);
2432 * set correct block size
2434 blk_queue_hardsect_size(drive
->queue
, CD_FRAMESIZE
);
2436 if (drive
->autotune
== IDE_TUNE_DEFAULT
||
2437 drive
->autotune
== IDE_TUNE_AUTO
)
2438 drive
->dsc_overlap
= (drive
->next
!= drive
);
2440 if (ide_cdrom_register(drive
, nslots
)) {
2441 printk (KERN_ERR
"%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive
->name
);
2442 cd
->devinfo
.handle
= NULL
;
2445 ide_cdrom_add_settings(drive
);
2449 #ifdef CONFIG_IDE_PROC_FS
2451 sector_t
ide_cdrom_capacity (ide_drive_t
*drive
)
2453 unsigned long capacity
, sectors_per_frame
;
2455 if (cdrom_read_capacity(drive
, &capacity
, §ors_per_frame
, NULL
))
2458 return capacity
* sectors_per_frame
;
2462 static void ide_cd_remove(ide_drive_t
*drive
)
2464 struct cdrom_info
*info
= drive
->driver_data
;
2466 ide_proc_unregister_driver(drive
, info
->driver
);
2468 del_gendisk(info
->disk
);
2473 static void ide_cd_release(struct kref
*kref
)
2475 struct cdrom_info
*info
= to_ide_cd(kref
);
2476 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
2477 ide_drive_t
*drive
= info
->drive
;
2478 struct gendisk
*g
= info
->disk
;
2480 kfree(info
->buffer
);
2482 if (devinfo
->handle
== drive
&& unregister_cdrom(devinfo
))
2483 printk(KERN_ERR
"%s: %s failed to unregister device from the cdrom "
2484 "driver.\n", __FUNCTION__
, drive
->name
);
2485 drive
->dsc_overlap
= 0;
2486 drive
->driver_data
= NULL
;
2487 blk_queue_prep_rq(drive
->queue
, NULL
);
2488 g
->private_data
= NULL
;
2493 static int ide_cd_probe(ide_drive_t
*);
2495 #ifdef CONFIG_IDE_PROC_FS
2496 static int proc_idecd_read_capacity
2497 (char *page
, char **start
, off_t off
, int count
, int *eof
, void *data
)
2499 ide_drive_t
*drive
= data
;
2502 len
= sprintf(page
,"%llu\n", (long long)ide_cdrom_capacity(drive
));
2503 PROC_IDE_READ_RETURN(page
,start
,off
,count
,eof
,len
);
2506 static ide_proc_entry_t idecd_proc
[] = {
2507 { "capacity", S_IFREG
|S_IRUGO
, proc_idecd_read_capacity
, NULL
},
2508 { NULL
, 0, NULL
, NULL
}
2512 static ide_driver_t ide_cdrom_driver
= {
2514 .owner
= THIS_MODULE
,
2515 .name
= "ide-cdrom",
2516 .bus
= &ide_bus_type
,
2518 .probe
= ide_cd_probe
,
2519 .remove
= ide_cd_remove
,
2520 .version
= IDECD_VERSION
,
2522 .supports_dsc_overlap
= 1,
2523 .do_request
= ide_do_rw_cdrom
,
2524 .end_request
= ide_end_request
,
2525 .error
= __ide_error
,
2526 .abort
= __ide_abort
,
2527 #ifdef CONFIG_IDE_PROC_FS
2532 static int idecd_open(struct inode
* inode
, struct file
* file
)
2534 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
2535 struct cdrom_info
*info
;
2538 if (!(info
= ide_cd_get(disk
)))
2542 info
->buffer
= kmalloc(SECTOR_BUFFER_SIZE
, GFP_KERNEL
|__GFP_REPEAT
);
2545 rc
= cdrom_open(&info
->devinfo
, inode
, file
);
2553 static int idecd_release(struct inode
* inode
, struct file
* file
)
2555 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
2556 struct cdrom_info
*info
= ide_cd_g(disk
);
2558 cdrom_release (&info
->devinfo
, file
);
2565 static int idecd_set_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2567 struct packet_command cgc
;
2572 if (copy_from_user(&spindown
, (void __user
*)arg
, sizeof(char)))
2575 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2577 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2581 buffer
[11] = (buffer
[11] & 0xf0) | (spindown
& 0x0f);
2582 return cdrom_mode_select(cdi
, &cgc
);
2585 static int idecd_get_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2587 struct packet_command cgc
;
2592 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2594 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2598 spindown
= buffer
[11] & 0x0f;
2599 if (copy_to_user((void __user
*)arg
, &spindown
, sizeof (char)))
2604 static int idecd_ioctl (struct inode
*inode
, struct file
*file
,
2605 unsigned int cmd
, unsigned long arg
)
2607 struct block_device
*bdev
= inode
->i_bdev
;
2608 struct cdrom_info
*info
= ide_cd_g(bdev
->bd_disk
);
2612 case CDROMSETSPINDOWN
:
2613 return idecd_set_spindown(&info
->devinfo
, arg
);
2614 case CDROMGETSPINDOWN
:
2615 return idecd_get_spindown(&info
->devinfo
, arg
);
2620 err
= generic_ide_ioctl(info
->drive
, file
, bdev
, cmd
, arg
);
2622 err
= cdrom_ioctl(file
, &info
->devinfo
, inode
, cmd
, arg
);
2627 static int idecd_media_changed(struct gendisk
*disk
)
2629 struct cdrom_info
*info
= ide_cd_g(disk
);
2630 return cdrom_media_changed(&info
->devinfo
);
2633 static int idecd_revalidate_disk(struct gendisk
*disk
)
2635 struct cdrom_info
*info
= ide_cd_g(disk
);
2636 struct request_sense sense
;
2638 ide_cd_read_toc(info
->drive
, &sense
);
2643 static struct block_device_operations idecd_ops
= {
2644 .owner
= THIS_MODULE
,
2646 .release
= idecd_release
,
2647 .ioctl
= idecd_ioctl
,
2648 .media_changed
= idecd_media_changed
,
2649 .revalidate_disk
= idecd_revalidate_disk
2653 static char *ignore
= NULL
;
2655 module_param(ignore
, charp
, 0400);
2656 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2658 static int ide_cd_probe(ide_drive_t
*drive
)
2660 struct cdrom_info
*info
;
2662 struct request_sense sense
;
2664 if (!strstr("ide-cdrom", drive
->driver_req
))
2666 if (!drive
->present
)
2668 if (drive
->media
!= ide_cdrom
&& drive
->media
!= ide_optical
)
2670 /* skip drives that we were told to ignore */
2671 if (ignore
!= NULL
) {
2672 if (strstr(ignore
, drive
->name
)) {
2673 printk(KERN_INFO
"ide-cd: ignoring drive %s\n", drive
->name
);
2678 printk(KERN_INFO
"ide-cd: passing drive %s to ide-scsi emulation.\n", drive
->name
);
2681 info
= kzalloc(sizeof(struct cdrom_info
), GFP_KERNEL
);
2683 printk(KERN_ERR
"%s: Can't allocate a cdrom structure\n", drive
->name
);
2687 g
= alloc_disk(1 << PARTN_BITS
);
2691 ide_init_disk(g
, drive
);
2693 ide_proc_register_driver(drive
, &ide_cdrom_driver
);
2695 kref_init(&info
->kref
);
2697 info
->drive
= drive
;
2698 info
->driver
= &ide_cdrom_driver
;
2701 g
->private_data
= &info
->driver
;
2703 drive
->driver_data
= info
;
2706 g
->driverfs_dev
= &drive
->gendev
;
2707 g
->flags
= GENHD_FL_CD
| GENHD_FL_REMOVABLE
;
2708 if (ide_cdrom_setup(drive
)) {
2709 ide_proc_unregister_driver(drive
, &ide_cdrom_driver
);
2710 ide_cd_release(&info
->kref
);
2714 ide_cd_read_toc(drive
, &sense
);
2715 g
->fops
= &idecd_ops
;
2716 g
->flags
|= GENHD_FL_REMOVABLE
;
2726 static void __exit
ide_cdrom_exit(void)
2728 driver_unregister(&ide_cdrom_driver
.gen_driver
);
2731 static int __init
ide_cdrom_init(void)
2733 return driver_register(&ide_cdrom_driver
.gen_driver
);
2736 MODULE_ALIAS("ide:*m-cdrom*");
2737 MODULE_ALIAS("ide-cd");
2738 module_init(ide_cdrom_init
);
2739 module_exit(ide_cdrom_exit
);
2740 MODULE_LICENSE("GPL");