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>
50 #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */
54 #include <asm/byteorder.h>
55 #include <asm/uaccess.h>
56 #include <asm/unaligned.h>
60 static DEFINE_MUTEX(idecd_ref_mutex
);
62 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
64 #define ide_cd_g(disk) \
65 container_of((disk)->private_data, struct cdrom_info, driver)
67 static struct cdrom_info
*ide_cd_get(struct gendisk
*disk
)
69 struct cdrom_info
*cd
= NULL
;
71 mutex_lock(&idecd_ref_mutex
);
75 mutex_unlock(&idecd_ref_mutex
);
79 static void ide_cd_release(struct kref
*);
81 static void ide_cd_put(struct cdrom_info
*cd
)
83 mutex_lock(&idecd_ref_mutex
);
84 kref_put(&cd
->kref
, ide_cd_release
);
85 mutex_unlock(&idecd_ref_mutex
);
88 /****************************************************************************
89 * Generic packet command support and error handling routines.
92 /* Mark that we've seen a media change, and invalidate our internal
94 static void cdrom_saw_media_change (ide_drive_t
*drive
)
96 struct cdrom_info
*cd
= drive
->driver_data
;
98 cd
->state_flags
.media_changed
= 1;
99 cd
->state_flags
.toc_valid
= 0;
100 cd
->nsectors_buffered
= 0;
103 static int cdrom_log_sense(ide_drive_t
*drive
, struct request
*rq
,
104 struct request_sense
*sense
)
108 if (!sense
|| !rq
|| (rq
->cmd_flags
& REQ_QUIET
))
111 switch (sense
->sense_key
) {
112 case NO_SENSE
: case RECOVERED_ERROR
:
116 * don't care about tray state messages for
117 * e.g. capacity commands or in-progress or
120 if (sense
->asc
== 0x3a || sense
->asc
== 0x04)
124 case ILLEGAL_REQUEST
:
126 * don't log START_STOP unit with LoEj set, since
127 * we cannot reliably check if drive can auto-close
129 if (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
&& sense
->asc
== 0x24)
135 * Make good and sure we've seen this potential media
136 * change. Some drives (i.e. Creative) fail to present
137 * the correct sense key in the error register.
139 cdrom_saw_media_change(drive
);
149 void cdrom_analyze_sense_data(ide_drive_t
*drive
,
150 struct request
*failed_command
,
151 struct request_sense
*sense
)
153 unsigned long sector
;
154 unsigned long bio_sectors
;
156 struct cdrom_info
*info
= drive
->driver_data
;
158 if (!cdrom_log_sense(drive
, failed_command
, sense
))
162 * If a read toc is executed for a CD-R or CD-RW medium where
163 * the first toc has not been recorded yet, it will fail with
164 * 05/24/00 (which is a confusing error)
166 if (failed_command
&& failed_command
->cmd
[0] == GPCMD_READ_TOC_PMA_ATIP
)
167 if (sense
->sense_key
== 0x05 && sense
->asc
== 0x24)
170 if (sense
->error_code
== 0x70) { /* Current Error */
171 switch(sense
->sense_key
) {
173 case VOLUME_OVERFLOW
:
174 case ILLEGAL_REQUEST
:
177 if (failed_command
== NULL
||
178 !blk_fs_request(failed_command
))
180 sector
= (sense
->information
[0] << 24) |
181 (sense
->information
[1] << 16) |
182 (sense
->information
[2] << 8) |
183 (sense
->information
[3]);
185 bio_sectors
= bio_sectors(failed_command
->bio
);
188 if (drive
->queue
->hardsect_size
== 2048)
189 sector
<<= 2; /* Device sector size is 2K */
190 sector
&= ~(bio_sectors
-1);
191 valid
= (sector
- failed_command
->sector
) << 9;
195 if (sector
< get_capacity(info
->disk
) &&
196 drive
->probed_capacity
- sector
< 4 * 75) {
197 set_capacity(info
->disk
, sector
);
201 #if VERBOSE_IDE_CD_ERRORS
204 const char *s
= "bad sense key!";
207 printk ("ATAPI device %s:\n", drive
->name
);
208 if (sense
->error_code
==0x70)
210 else if (sense
->error_code
==0x71)
211 printk(" Deferred Error: ");
212 else if (sense
->error_code
== 0x7f)
213 printk(" Vendor-specific Error: ");
215 printk(" Unknown Error Type: ");
217 if (sense
->sense_key
< ARRAY_SIZE(sense_key_texts
))
218 s
= sense_key_texts
[sense
->sense_key
];
220 printk("%s -- (Sense key=0x%02x)\n", s
, sense
->sense_key
);
222 if (sense
->asc
== 0x40) {
223 sprintf(buf
, "Diagnostic failure on component 0x%02x",
227 int lo
= 0, mid
, hi
= ARRAY_SIZE(sense_data_texts
);
228 unsigned long key
= (sense
->sense_key
<< 16);
229 key
|= (sense
->asc
<< 8);
230 if (!(sense
->ascq
>= 0x80 && sense
->ascq
<= 0xdd))
236 if (sense_data_texts
[mid
].asc_ascq
== key
||
237 sense_data_texts
[mid
].asc_ascq
== (0xff0000|key
)) {
238 s
= sense_data_texts
[mid
].text
;
241 else if (sense_data_texts
[mid
].asc_ascq
> key
)
249 if (sense
->asc
> 0x80)
250 s
= "(vendor-specific error)";
252 s
= "(reserved error code)";
255 printk(KERN_ERR
" %s -- (asc=0x%02x, ascq=0x%02x)\n",
256 s
, sense
->asc
, sense
->ascq
);
258 if (failed_command
!= NULL
) {
260 int lo
=0, mid
, hi
= ARRAY_SIZE(packet_command_texts
);
265 if (packet_command_texts
[mid
].packet_command
==
266 failed_command
->cmd
[0]) {
267 s
= packet_command_texts
[mid
].text
;
270 if (packet_command_texts
[mid
].packet_command
>
271 failed_command
->cmd
[0])
277 printk (KERN_ERR
" The failed \"%s\" packet command was: \n \"", s
);
278 for (i
=0; i
<sizeof (failed_command
->cmd
); i
++)
279 printk ("%02x ", failed_command
->cmd
[i
]);
283 /* The SKSV bit specifies validity of the sense_key_specific
284 * in the next two commands. It is bit 7 of the first byte.
285 * In the case of NOT_READY, if SKSV is set the drive can
286 * give us nice ETA readings.
288 if (sense
->sense_key
== NOT_READY
&& (sense
->sks
[0] & 0x80)) {
289 int progress
= (sense
->sks
[1] << 8 | sense
->sks
[2]) * 100;
290 printk(KERN_ERR
" Command is %02d%% complete\n", progress
/ 0xffff);
294 if (sense
->sense_key
== ILLEGAL_REQUEST
&&
295 (sense
->sks
[0] & 0x80) != 0) {
296 printk(KERN_ERR
" Error in %s byte %d",
297 (sense
->sks
[0] & 0x40) != 0 ?
298 "command packet" : "command data",
299 (sense
->sks
[1] << 8) + sense
->sks
[2]);
301 if ((sense
->sks
[0] & 0x40) != 0)
302 printk (" bit %d", sense
->sks
[0] & 0x07);
308 #else /* not VERBOSE_IDE_CD_ERRORS */
310 /* Suppress printing unit attention and `in progress of becoming ready'
311 errors when we're not being verbose. */
313 if (sense
->sense_key
== UNIT_ATTENTION
||
314 (sense
->sense_key
== NOT_READY
&& (sense
->asc
== 4 ||
315 sense
->asc
== 0x3a)))
318 printk(KERN_ERR
"%s: error code: 0x%02x sense_key: 0x%02x asc: 0x%02x ascq: 0x%02x\n",
320 sense
->error_code
, sense
->sense_key
,
321 sense
->asc
, sense
->ascq
);
322 #endif /* not VERBOSE_IDE_CD_ERRORS */
326 * Initialize a ide-cd packet command request
328 static void cdrom_prepare_request(ide_drive_t
*drive
, struct request
*rq
)
330 struct cdrom_info
*cd
= drive
->driver_data
;
332 ide_init_drive_cmd(rq
);
333 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
334 rq
->rq_disk
= cd
->disk
;
337 static void cdrom_queue_request_sense(ide_drive_t
*drive
, void *sense
,
338 struct request
*failed_command
)
340 struct cdrom_info
*info
= drive
->driver_data
;
341 struct request
*rq
= &info
->request_sense_request
;
344 sense
= &info
->sense_data
;
346 /* stuff the sense request in front of our current request */
347 cdrom_prepare_request(drive
, rq
);
350 rq
->cmd
[0] = GPCMD_REQUEST_SENSE
;
351 rq
->cmd
[4] = rq
->data_len
= 18;
353 rq
->cmd_type
= REQ_TYPE_SENSE
;
355 /* NOTE! Save the failed command in "rq->buffer" */
356 rq
->buffer
= (void *) failed_command
;
358 (void) ide_do_drive_cmd(drive
, rq
, ide_preempt
);
361 static void cdrom_end_request (ide_drive_t
*drive
, int uptodate
)
363 struct request
*rq
= HWGROUP(drive
)->rq
;
364 int nsectors
= rq
->hard_cur_sectors
;
366 if (blk_sense_request(rq
) && uptodate
) {
368 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
371 struct request
*failed
= (struct request
*) rq
->buffer
;
372 struct cdrom_info
*info
= drive
->driver_data
;
373 void *sense
= &info
->sense_data
;
378 sense
= failed
->sense
;
379 failed
->sense_len
= rq
->sense_len
;
381 cdrom_analyze_sense_data(drive
, failed
, sense
);
383 * now end failed request
385 if (blk_fs_request(failed
)) {
386 if (ide_end_dequeued_request(drive
, failed
, 0,
387 failed
->hard_nr_sectors
))
390 spin_lock_irqsave(&ide_lock
, flags
);
391 if (__blk_end_request(failed
, -EIO
,
394 spin_unlock_irqrestore(&ide_lock
, flags
);
397 cdrom_analyze_sense_data(drive
, NULL
, sense
);
400 if (!rq
->current_nr_sectors
&& blk_fs_request(rq
))
402 /* make sure it's fully ended */
403 if (blk_pc_request(rq
))
404 nsectors
= (rq
->data_len
+ 511) >> 9;
408 ide_end_request(drive
, uptodate
, nsectors
);
411 static void ide_dump_status_no_sense(ide_drive_t
*drive
, const char *msg
, u8 stat
)
415 ide_dump_status(drive
, msg
, stat
);
418 /* Returns 0 if the request should be continued.
419 Returns 1 if the request was ended. */
420 static int cdrom_decode_status(ide_drive_t
*drive
, int good_stat
, int *stat_ret
)
422 struct request
*rq
= HWGROUP(drive
)->rq
;
423 int stat
, err
, sense_key
;
425 /* Check for errors. */
426 stat
= HWIF(drive
)->INB(IDE_STATUS_REG
);
430 if (OK_STAT(stat
, good_stat
, BAD_R_STAT
))
433 /* Get the IDE error register. */
434 err
= HWIF(drive
)->INB(IDE_ERROR_REG
);
435 sense_key
= err
>> 4;
438 printk("%s: missing rq in cdrom_decode_status\n", drive
->name
);
442 if (blk_sense_request(rq
)) {
443 /* We got an error trying to get sense info
444 from the drive (probably while trying
445 to recover from a former error). Just give up. */
447 rq
->cmd_flags
|= REQ_FAILED
;
448 cdrom_end_request(drive
, 0);
449 ide_error(drive
, "request sense failure", stat
);
452 } else if (blk_pc_request(rq
) || rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
453 /* All other functions, except for READ. */
457 * if we have an error, pass back CHECK_CONDITION as the
460 if (blk_pc_request(rq
) && !rq
->errors
)
461 rq
->errors
= SAM_STAT_CHECK_CONDITION
;
463 /* Check for tray open. */
464 if (sense_key
== NOT_READY
) {
465 cdrom_saw_media_change (drive
);
466 } else if (sense_key
== UNIT_ATTENTION
) {
467 /* Check for media change. */
468 cdrom_saw_media_change (drive
);
469 /*printk("%s: media changed\n",drive->name);*/
471 } else if ((sense_key
== ILLEGAL_REQUEST
) &&
472 (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
)) {
474 * Don't print error message for this condition--
475 * SFF8090i indicates that 5/24/00 is the correct
476 * response to a request to close the tray if the
477 * drive doesn't have that capability.
478 * cdrom_log_sense() knows this!
480 } else if (!(rq
->cmd_flags
& REQ_QUIET
)) {
481 /* Otherwise, print an error. */
482 ide_dump_status(drive
, "packet command error", stat
);
485 rq
->cmd_flags
|= REQ_FAILED
;
488 * instead of playing games with moving completions around,
489 * remove failed request completely and end it when the
490 * request sense has completed
492 if (stat
& ERR_STAT
) {
493 spin_lock_irqsave(&ide_lock
, flags
);
494 blkdev_dequeue_request(rq
);
495 HWGROUP(drive
)->rq
= NULL
;
496 spin_unlock_irqrestore(&ide_lock
, flags
);
498 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
500 cdrom_end_request(drive
, 0);
502 } else if (blk_fs_request(rq
)) {
503 int do_end_request
= 0;
505 /* Handle errors from READ and WRITE requests. */
507 if (blk_noretry_request(rq
))
510 if (sense_key
== NOT_READY
) {
512 if (rq_data_dir(rq
) == READ
) {
513 cdrom_saw_media_change (drive
);
515 /* Fail the request. */
516 printk ("%s: tray open\n", drive
->name
);
519 struct cdrom_info
*info
= drive
->driver_data
;
521 /* allow the drive 5 seconds to recover, some
522 * devices will return this error while flushing
525 info
->write_timeout
= jiffies
+ ATAPI_WAIT_WRITE_BUSY
;
527 if (time_after(jiffies
, info
->write_timeout
))
533 * take a breather relying on the
534 * unplug timer to kick us again
536 spin_lock_irqsave(&ide_lock
, flags
);
537 blk_plug_device(drive
->queue
);
538 spin_unlock_irqrestore(&ide_lock
,flags
);
542 } else if (sense_key
== UNIT_ATTENTION
) {
544 cdrom_saw_media_change (drive
);
546 /* Arrange to retry the request.
547 But be sure to give up if we've retried
549 if (++rq
->errors
> ERROR_MAX
)
551 } else if (sense_key
== ILLEGAL_REQUEST
||
552 sense_key
== DATA_PROTECT
) {
553 /* No point in retrying after an illegal
554 request or data protect error.*/
555 ide_dump_status_no_sense (drive
, "command error", stat
);
557 } else if (sense_key
== MEDIUM_ERROR
) {
558 /* No point in re-trying a zillion times on a bad
559 * sector... If we got here the error is not correctable */
560 ide_dump_status_no_sense (drive
, "media error (bad sector)", stat
);
562 } else if (sense_key
== BLANK_CHECK
) {
563 /* Disk appears blank ?? */
564 ide_dump_status_no_sense (drive
, "media error (blank)", stat
);
566 } else if ((err
& ~ABRT_ERR
) != 0) {
567 /* Go to the default handler
569 ide_error(drive
, "cdrom_decode_status", stat
);
571 } else if ((++rq
->errors
> ERROR_MAX
)) {
572 /* We've racked up too many retries. Abort. */
576 /* End a request through request sense analysis when we have
577 sense data. We need this in order to perform end of media
580 if (do_end_request
) {
581 if (stat
& ERR_STAT
) {
583 spin_lock_irqsave(&ide_lock
, flags
);
584 blkdev_dequeue_request(rq
);
585 HWGROUP(drive
)->rq
= NULL
;
586 spin_unlock_irqrestore(&ide_lock
, flags
);
588 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
590 cdrom_end_request(drive
, 0);
592 /* If we got a CHECK_CONDITION status,
593 queue a request sense command. */
595 cdrom_queue_request_sense(drive
, NULL
, NULL
);
598 blk_dump_rq_flags(rq
, "ide-cd: bad rq");
599 cdrom_end_request(drive
, 0);
602 /* Retry, or handle the next request. */
606 static int cdrom_timer_expiry(ide_drive_t
*drive
)
608 struct request
*rq
= HWGROUP(drive
)->rq
;
609 unsigned long wait
= 0;
612 * Some commands are *slow* and normally take a long time to
613 * complete. Usually we can use the ATAPI "disconnect" to bypass
614 * this, but not all commands/drives support that. Let
615 * ide_timer_expiry keep polling us for these.
617 switch (rq
->cmd
[0]) {
619 case GPCMD_FORMAT_UNIT
:
620 case GPCMD_RESERVE_RZONE_TRACK
:
621 case GPCMD_CLOSE_TRACK
:
622 case GPCMD_FLUSH_CACHE
:
623 wait
= ATAPI_WAIT_PC
;
626 if (!(rq
->cmd_flags
& REQ_QUIET
))
627 printk(KERN_INFO
"ide-cd: cmd 0x%x timed out\n", rq
->cmd
[0]);
634 /* Set up the device registers for transferring a packet command on DEV,
635 expecting to later transfer XFERLEN bytes. HANDLER is the routine
636 which actually transfers the command to the drive. If this is a
637 drq_interrupt device, this routine will arrange for HANDLER to be
638 called when the interrupt from the drive arrives. Otherwise, HANDLER
639 will be called immediately after the drive is prepared for the transfer. */
641 static ide_startstop_t
cdrom_start_packet_command(ide_drive_t
*drive
,
643 ide_handler_t
*handler
)
645 ide_startstop_t startstop
;
646 struct cdrom_info
*info
= drive
->driver_data
;
647 ide_hwif_t
*hwif
= drive
->hwif
;
649 /* Wait for the controller to be idle. */
650 if (ide_wait_stat(&startstop
, drive
, 0, BUSY_STAT
, WAIT_READY
))
653 /* FIXME: for Virtual DMA we must check harder */
655 info
->dma
= !hwif
->dma_setup(drive
);
657 /* Set up the controller registers. */
658 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_NSECT
| IDE_TFLAG_OUT_LBAL
|
659 IDE_TFLAG_NO_SELECT_MASK
, xferlen
, info
->dma
);
661 if (info
->config_flags
.drq_interrupt
) {
662 /* waiting for CDB interrupt, not DMA yet. */
664 drive
->waiting_for_dma
= 0;
667 ide_execute_command(drive
, WIN_PACKETCMD
, handler
, ATAPI_WAIT_PC
, cdrom_timer_expiry
);
673 spin_lock_irqsave(&ide_lock
, flags
);
674 hwif
->OUTBSYNC(drive
, WIN_PACKETCMD
, IDE_COMMAND_REG
);
676 spin_unlock_irqrestore(&ide_lock
, flags
);
678 return (*handler
) (drive
);
682 /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
683 The device registers must have already been prepared
684 by cdrom_start_packet_command.
685 HANDLER is the interrupt handler to call when the command completes
686 or there's data ready. */
687 #define ATAPI_MIN_CDB_BYTES 12
688 static ide_startstop_t
cdrom_transfer_packet_command (ide_drive_t
*drive
,
690 ide_handler_t
*handler
)
692 ide_hwif_t
*hwif
= drive
->hwif
;
694 struct cdrom_info
*info
= drive
->driver_data
;
695 ide_startstop_t startstop
;
697 if (info
->config_flags
.drq_interrupt
) {
698 /* Here we should have been called after receiving an interrupt
699 from the device. DRQ should how be set. */
701 /* Check for errors. */
702 if (cdrom_decode_status(drive
, DRQ_STAT
, NULL
))
705 /* Ok, next interrupt will be DMA interrupt. */
707 drive
->waiting_for_dma
= 1;
709 /* Otherwise, we must wait for DRQ to get set. */
710 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
,
711 BUSY_STAT
, WAIT_READY
))
715 /* Arm the interrupt handler. */
716 ide_set_handler(drive
, handler
, rq
->timeout
, cdrom_timer_expiry
);
718 /* ATAPI commands get padded out to 12 bytes minimum */
719 cmd_len
= COMMAND_SIZE(rq
->cmd
[0]);
720 if (cmd_len
< ATAPI_MIN_CDB_BYTES
)
721 cmd_len
= ATAPI_MIN_CDB_BYTES
;
723 /* Send the command to the device. */
724 HWIF(drive
)->atapi_output_bytes(drive
, rq
->cmd
, cmd_len
);
726 /* Start the DMA if need be */
728 hwif
->dma_start(drive
);
733 /****************************************************************************
734 * Block read functions.
737 typedef void (xfer_func_t
)(ide_drive_t
*, void *, u32
);
739 static void ide_cd_pad_transfer(ide_drive_t
*drive
, xfer_func_t
*xf
, int len
)
743 xf(drive
, &dum
, sizeof(dum
));
749 * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
750 * buffer. Once the first sector is added, any subsequent sectors are
751 * assumed to be continuous (until the buffer is cleared). For the first
752 * sector added, SECTOR is its sector number. (SECTOR is then ignored until
753 * the buffer is cleared.)
755 static void cdrom_buffer_sectors (ide_drive_t
*drive
, unsigned long sector
,
756 int sectors_to_transfer
)
758 struct cdrom_info
*info
= drive
->driver_data
;
760 /* Number of sectors to read into the buffer. */
761 int sectors_to_buffer
= min_t(int, sectors_to_transfer
,
762 (SECTOR_BUFFER_SIZE
>> SECTOR_BITS
) -
763 info
->nsectors_buffered
);
767 /* If we couldn't get a buffer, don't try to buffer anything... */
768 if (info
->buffer
== NULL
)
769 sectors_to_buffer
= 0;
771 /* If this is the first sector in the buffer, remember its number. */
772 if (info
->nsectors_buffered
== 0)
773 info
->sector_buffered
= sector
;
775 /* Read the data into the buffer. */
776 dest
= info
->buffer
+ info
->nsectors_buffered
* SECTOR_SIZE
;
777 while (sectors_to_buffer
> 0) {
778 HWIF(drive
)->atapi_input_bytes(drive
, dest
, SECTOR_SIZE
);
780 --sectors_to_transfer
;
781 ++info
->nsectors_buffered
;
785 /* Throw away any remaining data. */
786 while (sectors_to_transfer
> 0) {
787 static char dum
[SECTOR_SIZE
];
788 HWIF(drive
)->atapi_input_bytes(drive
, dum
, sizeof (dum
));
789 --sectors_to_transfer
;
794 * Check the contents of the interrupt reason register from the cdrom
795 * and attempt to recover if there are problems. Returns 0 if everything's
796 * ok; nonzero if the request has been terminated.
799 int cdrom_read_check_ireason (ide_drive_t
*drive
, int len
, int ireason
)
803 else if (ireason
== 0) {
804 ide_hwif_t
*hwif
= drive
->hwif
;
806 /* Whoops... The drive is expecting to receive data from us! */
807 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
808 drive
->name
, __FUNCTION__
);
810 /* Throw some data at the drive so it doesn't hang
811 and quit this request. */
812 ide_cd_pad_transfer(drive
, hwif
->atapi_output_bytes
, len
);
813 } else if (ireason
== 1) {
814 /* Some drives (ASUS) seem to tell us that status
815 * info is available. just get it and ignore.
817 (void) HWIF(drive
)->INB(IDE_STATUS_REG
);
820 /* Drive wants a command packet, or invalid ireason... */
821 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
822 drive
->name
, __FUNCTION__
, ireason
);
825 cdrom_end_request(drive
, 0);
830 * Interrupt routine. Called when a read request has completed.
832 static ide_startstop_t
cdrom_read_intr (ide_drive_t
*drive
)
835 int ireason
, len
, sectors_to_transfer
, nskip
;
836 struct cdrom_info
*info
= drive
->driver_data
;
837 u8 lowcyl
= 0, highcyl
= 0;
838 int dma
= info
->dma
, dma_error
= 0;
840 struct request
*rq
= HWGROUP(drive
)->rq
;
847 dma_error
= HWIF(drive
)->ide_dma_end(drive
);
849 printk(KERN_ERR
"%s: DMA read error\n", drive
->name
);
854 if (cdrom_decode_status(drive
, 0, &stat
))
859 ide_end_request(drive
, 1, rq
->nr_sectors
);
862 return ide_error(drive
, "dma error", stat
);
865 /* Read the interrupt reason and the transfer length. */
866 ireason
= HWIF(drive
)->INB(IDE_IREASON_REG
) & 0x3;
867 lowcyl
= HWIF(drive
)->INB(IDE_BCOUNTL_REG
);
868 highcyl
= HWIF(drive
)->INB(IDE_BCOUNTH_REG
);
870 len
= lowcyl
+ (256 * highcyl
);
872 /* If DRQ is clear, the command has completed. */
873 if ((stat
& DRQ_STAT
) == 0) {
874 /* If we're not done filling the current buffer, complain.
875 Otherwise, complete the command normally. */
876 if (rq
->current_nr_sectors
> 0) {
877 printk (KERN_ERR
"%s: cdrom_read_intr: data underrun (%d blocks)\n",
878 drive
->name
, rq
->current_nr_sectors
);
879 rq
->cmd_flags
|= REQ_FAILED
;
880 cdrom_end_request(drive
, 0);
882 cdrom_end_request(drive
, 1);
886 /* Check that the drive is expecting to do the same thing we are. */
887 if (cdrom_read_check_ireason (drive
, len
, ireason
))
890 /* Assume that the drive will always provide data in multiples
891 of at least SECTOR_SIZE, as it gets hairy to keep track
892 of the transfers otherwise. */
893 if ((len
% SECTOR_SIZE
) != 0) {
894 printk (KERN_ERR
"%s: cdrom_read_intr: Bad transfer size %d\n",
896 if (info
->config_flags
.limit_nframes
)
897 printk (KERN_ERR
" This drive is not supported by this version of the driver\n");
899 printk (KERN_ERR
" Trying to limit transfer sizes\n");
900 info
->config_flags
.limit_nframes
= 1;
902 cdrom_end_request(drive
, 0);
906 /* The number of sectors we need to read from the drive. */
907 sectors_to_transfer
= len
/ SECTOR_SIZE
;
909 /* First, figure out if we need to bit-bucket
910 any of the leading sectors. */
911 nskip
= min_t(int, rq
->current_nr_sectors
- bio_cur_sectors(rq
->bio
), sectors_to_transfer
);
914 /* We need to throw away a sector. */
915 static char dum
[SECTOR_SIZE
];
916 HWIF(drive
)->atapi_input_bytes(drive
, dum
, sizeof (dum
));
918 --rq
->current_nr_sectors
;
920 --sectors_to_transfer
;
923 /* Now loop while we still have data to read from the drive. */
924 while (sectors_to_transfer
> 0) {
927 /* If we've filled the present buffer but there's another
928 chained buffer after it, move on. */
929 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
930 cdrom_end_request(drive
, 1);
932 /* If the buffers are full, cache the rest of the data in our
934 if (rq
->current_nr_sectors
== 0) {
935 cdrom_buffer_sectors(drive
, rq
->sector
, sectors_to_transfer
);
936 sectors_to_transfer
= 0;
938 /* Transfer data to the buffers.
939 Figure out how many sectors we can transfer
940 to the current buffer. */
941 this_transfer
= min_t(int, sectors_to_transfer
,
942 rq
->current_nr_sectors
);
944 /* Read this_transfer sectors
945 into the current buffer. */
946 while (this_transfer
> 0) {
947 HWIF(drive
)->atapi_input_bytes(drive
, rq
->buffer
, SECTOR_SIZE
);
948 rq
->buffer
+= SECTOR_SIZE
;
950 --rq
->current_nr_sectors
;
953 --sectors_to_transfer
;
958 /* Done moving data! Wait for another interrupt. */
959 ide_set_handler(drive
, &cdrom_read_intr
, ATAPI_WAIT_PC
, NULL
);
964 * Try to satisfy some of the current read request from our cached data.
965 * Returns nonzero if the request has been completed, zero otherwise.
967 static int cdrom_read_from_buffer (ide_drive_t
*drive
)
969 struct cdrom_info
*info
= drive
->driver_data
;
970 struct request
*rq
= HWGROUP(drive
)->rq
;
971 unsigned short sectors_per_frame
;
973 sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
975 /* Can't do anything if there's no buffer. */
976 if (info
->buffer
== NULL
) return 0;
978 /* Loop while this request needs data and the next block is present
980 while (rq
->nr_sectors
> 0 &&
981 rq
->sector
>= info
->sector_buffered
&&
982 rq
->sector
< info
->sector_buffered
+ info
->nsectors_buffered
) {
983 if (rq
->current_nr_sectors
== 0)
984 cdrom_end_request(drive
, 1);
988 (rq
->sector
- info
->sector_buffered
) * SECTOR_SIZE
,
990 rq
->buffer
+= SECTOR_SIZE
;
991 --rq
->current_nr_sectors
;
996 /* If we've satisfied the current request,
997 terminate it successfully. */
998 if (rq
->nr_sectors
== 0) {
999 cdrom_end_request(drive
, 1);
1003 /* Move on to the next buffer if needed. */
1004 if (rq
->current_nr_sectors
== 0)
1005 cdrom_end_request(drive
, 1);
1007 /* If this condition does not hold, then the kluge i use to
1008 represent the number of sectors to skip at the start of a transfer
1009 will fail. I think that this will never happen, but let's be
1010 paranoid and check. */
1011 if (rq
->current_nr_sectors
< bio_cur_sectors(rq
->bio
) &&
1012 (rq
->sector
& (sectors_per_frame
- 1))) {
1013 printk(KERN_ERR
"%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
1014 drive
->name
, (long)rq
->sector
);
1015 cdrom_end_request(drive
, 0);
1023 * Routine to send a read packet command to the drive.
1024 * This is usually called directly from cdrom_start_read.
1025 * However, for drq_interrupt devices, it is called from an interrupt
1026 * when the drive is ready to accept the command.
1028 static ide_startstop_t
cdrom_start_read_continuation (ide_drive_t
*drive
)
1030 struct request
*rq
= HWGROUP(drive
)->rq
;
1031 unsigned short sectors_per_frame
;
1034 sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1036 /* If the requested sector doesn't start on a cdrom block boundary,
1037 we must adjust the start of the transfer so that it does,
1038 and remember to skip the first few sectors.
1039 If the CURRENT_NR_SECTORS field is larger than the size
1040 of the buffer, it will mean that we're to skip a number
1041 of sectors equal to the amount by which CURRENT_NR_SECTORS
1042 is larger than the buffer size. */
1043 nskip
= rq
->sector
& (sectors_per_frame
- 1);
1045 /* Sanity check... */
1046 if (rq
->current_nr_sectors
!= bio_cur_sectors(rq
->bio
) &&
1047 (rq
->sector
& (sectors_per_frame
- 1))) {
1048 printk(KERN_ERR
"%s: cdrom_start_read_continuation: buffer botch (%u)\n",
1049 drive
->name
, rq
->current_nr_sectors
);
1050 cdrom_end_request(drive
, 0);
1053 rq
->current_nr_sectors
+= nskip
;
1056 /* Set up the command */
1057 rq
->timeout
= ATAPI_WAIT_PC
;
1059 /* Send the command to the drive and return. */
1060 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_read_intr
);
1064 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
1065 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
1066 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
1068 static ide_startstop_t
cdrom_seek_intr (ide_drive_t
*drive
)
1070 struct cdrom_info
*info
= drive
->driver_data
;
1072 static int retry
= 10;
1074 if (cdrom_decode_status(drive
, 0, &stat
))
1077 info
->config_flags
.seeking
= 1;
1079 if (retry
&& time_after(jiffies
, info
->start_seek
+ IDECD_SEEK_TIMER
)) {
1082 * this condition is far too common, to bother
1085 /* printk("%s: disabled DSC seek overlap\n", drive->name);*/
1086 drive
->dsc_overlap
= 0;
1092 static ide_startstop_t
cdrom_start_seek_continuation (ide_drive_t
*drive
)
1094 struct request
*rq
= HWGROUP(drive
)->rq
;
1095 sector_t frame
= rq
->sector
;
1097 sector_div(frame
, queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
);
1099 memset(rq
->cmd
, 0, sizeof(rq
->cmd
));
1100 rq
->cmd
[0] = GPCMD_SEEK
;
1101 put_unaligned(cpu_to_be32(frame
), (unsigned int *) &rq
->cmd
[2]);
1103 rq
->timeout
= ATAPI_WAIT_PC
;
1104 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_seek_intr
);
1107 static ide_startstop_t
cdrom_start_seek (ide_drive_t
*drive
, unsigned int block
)
1109 struct cdrom_info
*info
= drive
->driver_data
;
1112 info
->start_seek
= jiffies
;
1113 return cdrom_start_packet_command(drive
, 0, cdrom_start_seek_continuation
);
1116 /* Fix up a possibly partially-processed request so that we can
1117 start it over entirely, or even put it back on the request queue. */
1118 static void restore_request (struct request
*rq
)
1120 if (rq
->buffer
!= bio_data(rq
->bio
)) {
1121 sector_t n
= (rq
->buffer
- (char *) bio_data(rq
->bio
)) / SECTOR_SIZE
;
1123 rq
->buffer
= bio_data(rq
->bio
);
1124 rq
->nr_sectors
+= n
;
1127 rq
->hard_cur_sectors
= rq
->current_nr_sectors
= bio_cur_sectors(rq
->bio
);
1128 rq
->hard_nr_sectors
= rq
->nr_sectors
;
1129 rq
->hard_sector
= rq
->sector
;
1130 rq
->q
->prep_rq_fn(rq
->q
, rq
);
1134 * Start a read request from the CD-ROM.
1136 static ide_startstop_t
cdrom_start_read (ide_drive_t
*drive
, unsigned int block
)
1138 struct cdrom_info
*info
= drive
->driver_data
;
1139 struct request
*rq
= HWGROUP(drive
)->rq
;
1140 unsigned short sectors_per_frame
;
1142 sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1144 /* We may be retrying this request after an error. Fix up
1145 any weirdness which might be present in the request packet. */
1146 restore_request(rq
);
1148 /* Satisfy whatever we can of this request from our cached sector. */
1149 if (cdrom_read_from_buffer(drive
))
1152 /* Clear the local sector buffer. */
1153 info
->nsectors_buffered
= 0;
1155 /* use dma, if possible. */
1156 info
->dma
= drive
->using_dma
;
1157 if ((rq
->sector
& (sectors_per_frame
- 1)) ||
1158 (rq
->nr_sectors
& (sectors_per_frame
- 1)))
1161 /* Start sending the read request to the drive. */
1162 return cdrom_start_packet_command(drive
, 32768, cdrom_start_read_continuation
);
1165 /****************************************************************************
1166 * Execute all other packet commands.
1169 /* Interrupt routine for packet command completion. */
1170 static ide_startstop_t
cdrom_pc_intr (ide_drive_t
*drive
)
1172 struct request
*rq
= HWGROUP(drive
)->rq
;
1173 xfer_func_t
*xferfunc
= NULL
;
1174 int stat
, ireason
, len
, thislen
, write
;
1175 u8 lowcyl
= 0, highcyl
= 0;
1177 /* Check for errors. */
1178 if (cdrom_decode_status(drive
, 0, &stat
))
1181 /* Read the interrupt reason and the transfer length. */
1182 ireason
= HWIF(drive
)->INB(IDE_IREASON_REG
) & 0x3;
1183 lowcyl
= HWIF(drive
)->INB(IDE_BCOUNTL_REG
);
1184 highcyl
= HWIF(drive
)->INB(IDE_BCOUNTH_REG
);
1186 len
= lowcyl
+ (256 * highcyl
);
1188 /* If DRQ is clear, the command has completed.
1189 Complain if we still have data left to transfer. */
1190 if ((stat
& DRQ_STAT
) == 0) {
1191 /* Some of the trailing request sense fields are optional, and
1192 some drives don't send them. Sigh. */
1193 if (rq
->cmd
[0] == GPCMD_REQUEST_SENSE
&&
1195 rq
->data_len
<= 5) {
1196 while (rq
->data_len
> 0) {
1197 *(unsigned char *)rq
->data
++ = 0;
1202 if (rq
->data_len
== 0)
1203 cdrom_end_request(drive
, 1);
1205 rq
->cmd_flags
|= REQ_FAILED
;
1206 cdrom_end_request(drive
, 0);
1211 /* Figure out how much data to transfer. */
1212 thislen
= rq
->data_len
;
1218 xferfunc
= HWIF(drive
)->atapi_output_bytes
;
1219 } else if (ireason
== 2) {
1221 xferfunc
= HWIF(drive
)->atapi_input_bytes
;
1226 printk(KERN_ERR
"%s: confused, missing data\n",
1228 blk_dump_rq_flags(rq
, write
? "cdrom_pc_intr, write"
1229 : "cdrom_pc_intr, read");
1232 /* Transfer the data. */
1233 xferfunc(drive
, rq
->data
, thislen
);
1235 /* Keep count of how much data we've moved. */
1237 rq
->data
+= thislen
;
1238 rq
->data_len
-= thislen
;
1240 if (write
&& blk_sense_request(rq
))
1241 rq
->sense_len
+= thislen
;
1243 printk (KERN_ERR
"%s: cdrom_pc_intr: The drive "
1244 "appears confused (ireason = 0x%02x). "
1245 "Trying to recover by ending request.\n",
1246 drive
->name
, ireason
);
1247 rq
->cmd_flags
|= REQ_FAILED
;
1248 cdrom_end_request(drive
, 0);
1253 * If we haven't moved enough data to satisfy the drive,
1257 ide_cd_pad_transfer(drive
, xferfunc
, len
);
1259 /* Now we wait for another interrupt. */
1260 ide_set_handler(drive
, &cdrom_pc_intr
, ATAPI_WAIT_PC
, cdrom_timer_expiry
);
1264 static ide_startstop_t
cdrom_do_pc_continuation (ide_drive_t
*drive
)
1266 struct request
*rq
= HWGROUP(drive
)->rq
;
1269 rq
->timeout
= ATAPI_WAIT_PC
;
1271 /* Send the command to the drive and return. */
1272 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_pc_intr
);
1276 static ide_startstop_t
cdrom_do_packet_command (ide_drive_t
*drive
)
1279 struct request
*rq
= HWGROUP(drive
)->rq
;
1280 struct cdrom_info
*info
= drive
->driver_data
;
1283 rq
->cmd_flags
&= ~REQ_FAILED
;
1286 /* Start sending the command to the drive. */
1287 return cdrom_start_packet_command(drive
, len
, cdrom_do_pc_continuation
);
1291 static int cdrom_queue_packet_command(ide_drive_t
*drive
, struct request
*rq
)
1293 struct request_sense sense
;
1295 unsigned int flags
= rq
->cmd_flags
;
1297 if (rq
->sense
== NULL
)
1300 /* Start of retry loop. */
1303 unsigned long time
= jiffies
;
1304 rq
->cmd_flags
= flags
;
1306 error
= ide_do_drive_cmd(drive
, rq
, ide_wait
);
1307 time
= jiffies
- time
;
1309 /* FIXME: we should probably abort/retry or something
1310 * in case of failure */
1311 if (rq
->cmd_flags
& REQ_FAILED
) {
1312 /* The request failed. Retry if it was due to a unit
1314 (usually means media was changed). */
1315 struct request_sense
*reqbuf
= rq
->sense
;
1317 if (reqbuf
->sense_key
== UNIT_ATTENTION
)
1318 cdrom_saw_media_change(drive
);
1319 else if (reqbuf
->sense_key
== NOT_READY
&&
1320 reqbuf
->asc
== 4 && reqbuf
->ascq
!= 4) {
1321 /* The drive is in the process of loading
1322 a disk. Retry, but wait a little to give
1323 the drive time to complete the load. */
1326 /* Otherwise, don't retry. */
1332 /* End of retry loop. */
1333 } while ((rq
->cmd_flags
& REQ_FAILED
) && retries
>= 0);
1335 /* Return an error if the command failed. */
1336 return (rq
->cmd_flags
& REQ_FAILED
) ? -EIO
: 0;
1342 static int cdrom_write_check_ireason(ide_drive_t
*drive
, int len
, int ireason
)
1344 /* Two notes about IDE interrupt reason here - 0 means that
1345 * the drive wants to receive data from us, 2 means that
1346 * the drive is expecting to transfer data to us.
1350 else if (ireason
== 2) {
1351 ide_hwif_t
*hwif
= drive
->hwif
;
1353 /* Whoops... The drive wants to send data. */
1354 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
1355 drive
->name
, __FUNCTION__
);
1357 ide_cd_pad_transfer(drive
, hwif
->atapi_input_bytes
, len
);
1359 /* Drive wants a command packet, or invalid ireason... */
1360 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
1361 drive
->name
, __FUNCTION__
, ireason
);
1364 cdrom_end_request(drive
, 0);
1369 * Called from blk_end_request_callback() after the data of the request
1370 * is completed and before the request is completed.
1371 * By returning value '1', blk_end_request_callback() returns immediately
1372 * without completing the request.
1374 static int cdrom_newpc_intr_dummy_cb(struct request
*rq
)
1380 * best way to deal with dma that is not sector aligned right now... note
1381 * that in this path we are not using ->data or ->buffer at all. this irs
1382 * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the
1385 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*drive
)
1387 struct cdrom_info
*info
= drive
->driver_data
;
1388 struct request
*rq
= HWGROUP(drive
)->rq
;
1389 int dma_error
, dma
, stat
, ireason
, len
, thislen
;
1391 xfer_func_t
*xferfunc
;
1392 unsigned long flags
;
1394 /* Check for errors. */
1399 dma_error
= HWIF(drive
)->ide_dma_end(drive
);
1401 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
1402 rq_data_dir(rq
) ? "write" : "read");
1407 if (cdrom_decode_status(drive
, 0, &stat
))
1411 * using dma, transfer is complete now
1415 return ide_error(drive
, "dma error", stat
);
1417 spin_lock_irqsave(&ide_lock
, flags
);
1418 if (__blk_end_request(rq
, 0, rq
->data_len
))
1420 HWGROUP(drive
)->rq
= NULL
;
1421 spin_unlock_irqrestore(&ide_lock
, flags
);
1427 * ok we fall to pio :/
1429 ireason
= HWIF(drive
)->INB(IDE_IREASON_REG
) & 0x3;
1430 lowcyl
= HWIF(drive
)->INB(IDE_BCOUNTL_REG
);
1431 highcyl
= HWIF(drive
)->INB(IDE_BCOUNTH_REG
);
1433 len
= lowcyl
+ (256 * highcyl
);
1434 thislen
= rq
->data_len
;
1439 * If DRQ is clear, the command has completed.
1441 if ((stat
& DRQ_STAT
) == 0) {
1442 spin_lock_irqsave(&ide_lock
, flags
);
1443 if (__blk_end_request(rq
, 0, rq
->data_len
))
1445 HWGROUP(drive
)->rq
= NULL
;
1446 spin_unlock_irqrestore(&ide_lock
, flags
);
1452 * check which way to transfer data
1454 if (rq_data_dir(rq
) == WRITE
) {
1458 if (cdrom_write_check_ireason(drive
, len
, ireason
))
1461 xferfunc
= HWIF(drive
)->atapi_output_bytes
;
1466 if (cdrom_read_check_ireason(drive
, len
, ireason
))
1469 xferfunc
= HWIF(drive
)->atapi_input_bytes
;
1475 while (thislen
> 0) {
1476 int blen
= blen
= rq
->data_len
;
1477 char *ptr
= rq
->data
;
1483 ptr
= bio_data(rq
->bio
);
1484 blen
= bio_iovec(rq
->bio
)->bv_len
;
1488 printk(KERN_ERR
"%s: confused, missing data\n", drive
->name
);
1495 xferfunc(drive
, ptr
, blen
);
1499 rq
->data_len
-= blen
;
1503 * The request can't be completed until DRQ is cleared.
1504 * So complete the data, but don't complete the request
1505 * using the dummy function for the callback feature
1506 * of blk_end_request_callback().
1508 blk_end_request_callback(rq
, 0, blen
,
1509 cdrom_newpc_intr_dummy_cb
);
1518 ide_cd_pad_transfer(drive
, xferfunc
, len
);
1520 BUG_ON(HWGROUP(drive
)->handler
!= NULL
);
1522 ide_set_handler(drive
, cdrom_newpc_intr
, rq
->timeout
, NULL
);
1526 static ide_startstop_t
cdrom_write_intr(ide_drive_t
*drive
)
1528 int stat
, ireason
, len
, sectors_to_transfer
, uptodate
;
1529 struct cdrom_info
*info
= drive
->driver_data
;
1530 int dma_error
= 0, dma
= info
->dma
;
1531 u8 lowcyl
= 0, highcyl
= 0;
1533 struct request
*rq
= HWGROUP(drive
)->rq
;
1535 /* Check for errors. */
1538 dma_error
= HWIF(drive
)->ide_dma_end(drive
);
1540 printk(KERN_ERR
"%s: DMA write error\n", drive
->name
);
1545 if (cdrom_decode_status(drive
, 0, &stat
))
1549 * using dma, transfer is complete now
1553 return ide_error(drive
, "dma error", stat
);
1555 ide_end_request(drive
, 1, rq
->nr_sectors
);
1559 /* Read the interrupt reason and the transfer length. */
1560 ireason
= HWIF(drive
)->INB(IDE_IREASON_REG
) & 0x3;
1561 lowcyl
= HWIF(drive
)->INB(IDE_BCOUNTL_REG
);
1562 highcyl
= HWIF(drive
)->INB(IDE_BCOUNTH_REG
);
1564 len
= lowcyl
+ (256 * highcyl
);
1566 /* If DRQ is clear, the command has completed. */
1567 if ((stat
& DRQ_STAT
) == 0) {
1568 /* If we're not done writing, complain.
1569 * Otherwise, complete the command normally.
1572 if (rq
->current_nr_sectors
> 0) {
1573 printk(KERN_ERR
"%s: %s: data underrun (%d blocks)\n",
1574 drive
->name
, __FUNCTION__
,
1575 rq
->current_nr_sectors
);
1578 cdrom_end_request(drive
, uptodate
);
1582 /* Check that the drive is expecting to do the same thing we are. */
1583 if (cdrom_write_check_ireason(drive
, len
, ireason
))
1586 sectors_to_transfer
= len
/ SECTOR_SIZE
;
1589 * now loop and write out the data
1591 while (sectors_to_transfer
> 0) {
1594 if (!rq
->current_nr_sectors
) {
1595 printk(KERN_ERR
"%s: %s: confused, missing data\n",
1596 drive
->name
, __FUNCTION__
);
1601 * Figure out how many sectors we can transfer
1603 this_transfer
= min_t(int, sectors_to_transfer
, rq
->current_nr_sectors
);
1605 while (this_transfer
> 0) {
1606 HWIF(drive
)->atapi_output_bytes(drive
, rq
->buffer
, SECTOR_SIZE
);
1607 rq
->buffer
+= SECTOR_SIZE
;
1609 --rq
->current_nr_sectors
;
1612 --sectors_to_transfer
;
1616 * current buffer complete, move on
1618 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
1619 cdrom_end_request(drive
, 1);
1622 /* re-arm handler */
1623 ide_set_handler(drive
, &cdrom_write_intr
, ATAPI_WAIT_PC
, NULL
);
1627 static ide_startstop_t
cdrom_start_write_cont(ide_drive_t
*drive
)
1629 struct request
*rq
= HWGROUP(drive
)->rq
;
1631 #if 0 /* the immediate bit */
1632 rq
->cmd
[1] = 1 << 3;
1634 rq
->timeout
= ATAPI_WAIT_PC
;
1636 return cdrom_transfer_packet_command(drive
, rq
, cdrom_write_intr
);
1639 static ide_startstop_t
cdrom_start_write(ide_drive_t
*drive
, struct request
*rq
)
1641 struct cdrom_info
*info
= drive
->driver_data
;
1642 struct gendisk
*g
= info
->disk
;
1643 unsigned short sectors_per_frame
= queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1646 * writes *must* be hardware frame aligned
1648 if ((rq
->nr_sectors
& (sectors_per_frame
- 1)) ||
1649 (rq
->sector
& (sectors_per_frame
- 1))) {
1650 cdrom_end_request(drive
, 0);
1655 * disk has become write protected
1658 cdrom_end_request(drive
, 0);
1662 info
->nsectors_buffered
= 0;
1664 /* use dma, if possible. we don't need to check more, since we
1665 * know that the transfer is always (at least!) frame aligned */
1666 info
->dma
= drive
->using_dma
? 1 : 0;
1668 info
->devinfo
.media_written
= 1;
1670 /* Start sending the write request to the drive. */
1671 return cdrom_start_packet_command(drive
, 32768, cdrom_start_write_cont
);
1674 static ide_startstop_t
cdrom_do_newpc_cont(ide_drive_t
*drive
)
1676 struct request
*rq
= HWGROUP(drive
)->rq
;
1679 rq
->timeout
= ATAPI_WAIT_PC
;
1681 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
1684 static ide_startstop_t
cdrom_do_block_pc(ide_drive_t
*drive
, struct request
*rq
)
1686 struct cdrom_info
*info
= drive
->driver_data
;
1688 rq
->cmd_flags
|= REQ_QUIET
;
1696 int mask
= drive
->queue
->dma_alignment
;
1697 unsigned long addr
= (unsigned long) page_address(bio_page(rq
->bio
));
1699 info
->dma
= drive
->using_dma
;
1702 * check if dma is safe
1704 * NOTE! The "len" and "addr" checks should possibly have
1707 if ((rq
->data_len
& 15) || (addr
& mask
))
1711 /* Start sending the command to the drive. */
1712 return cdrom_start_packet_command(drive
, rq
->data_len
, cdrom_do_newpc_cont
);
1715 /****************************************************************************
1716 * cdrom driver request routine.
1718 static ide_startstop_t
1719 ide_do_rw_cdrom (ide_drive_t
*drive
, struct request
*rq
, sector_t block
)
1721 ide_startstop_t action
;
1722 struct cdrom_info
*info
= drive
->driver_data
;
1724 if (blk_fs_request(rq
)) {
1725 if (info
->config_flags
.seeking
) {
1726 unsigned long elapsed
= jiffies
- info
->start_seek
;
1727 int stat
= HWIF(drive
)->INB(IDE_STATUS_REG
);
1729 if ((stat
& SEEK_STAT
) != SEEK_STAT
) {
1730 if (elapsed
< IDECD_SEEK_TIMEOUT
) {
1731 ide_stall_queue(drive
, IDECD_SEEK_TIMER
);
1734 printk (KERN_ERR
"%s: DSC timeout\n", drive
->name
);
1736 info
->config_flags
.seeking
= 0;
1738 if ((rq_data_dir(rq
) == READ
) && IDE_LARGE_SEEK(info
->last_block
, block
, IDECD_SEEK_THRESHOLD
) && drive
->dsc_overlap
) {
1739 action
= cdrom_start_seek(drive
, block
);
1741 if (rq_data_dir(rq
) == READ
)
1742 action
= cdrom_start_read(drive
, block
);
1744 action
= cdrom_start_write(drive
, rq
);
1746 info
->last_block
= block
;
1748 } else if (rq
->cmd_type
== REQ_TYPE_SENSE
||
1749 rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
1750 return cdrom_do_packet_command(drive
);
1751 } else if (blk_pc_request(rq
)) {
1752 return cdrom_do_block_pc(drive
, rq
);
1753 } else if (blk_special_request(rq
)) {
1755 * right now this can only be a reset...
1757 cdrom_end_request(drive
, 1);
1761 blk_dump_rq_flags(rq
, "ide-cd bad flags");
1762 cdrom_end_request(drive
, 0);
1768 /****************************************************************************
1771 * Routines which queue packet commands take as a final argument a pointer
1772 * to a request_sense struct. If execution of the command results
1773 * in an error with a CHECK CONDITION status, this structure will be filled
1774 * with the results of the subsequent request sense command. The pointer
1775 * can also be NULL, in which case no sense information is returned.
1778 #if ! STANDARD_ATAPI
1782 return (x
%10) | ((x
/10) << 4);
1789 return (x
>> 4) * 10 + (x
& 0x0f);
1793 void msf_from_bcd (struct atapi_msf
*msf
)
1795 msf
->minute
= bcd2bin (msf
->minute
);
1796 msf
->second
= bcd2bin (msf
->second
);
1797 msf
->frame
= bcd2bin (msf
->frame
);
1800 #endif /* not STANDARD_ATAPI */
1804 void lba_to_msf (int lba
, byte
*m
, byte
*s
, byte
*f
)
1806 lba
+= CD_MSF_OFFSET
;
1807 lba
&= 0xffffff; /* negative lbas use only 24 bits */
1808 *m
= lba
/ (CD_SECS
* CD_FRAMES
);
1809 lba
%= (CD_SECS
* CD_FRAMES
);
1810 *s
= lba
/ CD_FRAMES
;
1811 *f
= lba
% CD_FRAMES
;
1816 int msf_to_lba (byte m
, byte s
, byte f
)
1818 return (((m
* CD_SECS
) + s
) * CD_FRAMES
+ f
) - CD_MSF_OFFSET
;
1821 static int cdrom_check_status(ide_drive_t
*drive
, struct request_sense
*sense
)
1824 struct cdrom_info
*info
= drive
->driver_data
;
1825 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1827 cdrom_prepare_request(drive
, &req
);
1830 req
.cmd
[0] = GPCMD_TEST_UNIT_READY
;
1831 req
.cmd_flags
|= REQ_QUIET
;
1833 #if ! STANDARD_ATAPI
1834 /* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
1835 switch CDs instead of supporting the LOAD_UNLOAD opcode */
1837 req
.cmd
[7] = cdi
->sanyo_slot
% 3;
1838 #endif /* not STANDARD_ATAPI */
1840 return cdrom_queue_packet_command(drive
, &req
);
1844 /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
1846 cdrom_lockdoor(ide_drive_t
*drive
, int lockflag
, struct request_sense
*sense
)
1848 struct cdrom_info
*cd
= drive
->driver_data
;
1849 struct request_sense my_sense
;
1856 /* If the drive cannot lock the door, just pretend. */
1857 if (cd
->config_flags
.no_doorlock
) {
1860 cdrom_prepare_request(drive
, &req
);
1862 req
.cmd
[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL
;
1863 req
.cmd
[4] = lockflag
? 1 : 0;
1864 stat
= cdrom_queue_packet_command(drive
, &req
);
1867 /* If we got an illegal field error, the drive
1868 probably cannot lock the door. */
1870 sense
->sense_key
== ILLEGAL_REQUEST
&&
1871 (sense
->asc
== 0x24 || sense
->asc
== 0x20)) {
1872 printk (KERN_ERR
"%s: door locking not supported\n",
1874 cd
->config_flags
.no_doorlock
= 1;
1878 /* no medium, that's alright. */
1879 if (stat
!= 0 && sense
->sense_key
== NOT_READY
&& sense
->asc
== 0x3a)
1883 cd
->state_flags
.door_locked
= lockflag
;
1889 /* Eject the disk if EJECTFLAG is 0.
1890 If EJECTFLAG is 1, try to reload the disk. */
1891 static int cdrom_eject(ide_drive_t
*drive
, int ejectflag
,
1892 struct request_sense
*sense
)
1894 struct cdrom_info
*cd
= drive
->driver_data
;
1895 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1899 if (cd
->config_flags
.no_eject
&& !ejectflag
)
1900 return -EDRIVE_CANT_DO_THIS
;
1902 /* reload fails on some drives, if the tray is locked */
1903 if (cd
->state_flags
.door_locked
&& ejectflag
)
1906 cdrom_prepare_request(drive
, &req
);
1908 /* only tell drive to close tray if open, if it can do that */
1909 if (ejectflag
&& (cdi
->mask
& CDC_CLOSE_TRAY
))
1913 req
.cmd
[0] = GPCMD_START_STOP_UNIT
;
1914 req
.cmd
[4] = loej
| (ejectflag
!= 0);
1915 return cdrom_queue_packet_command(drive
, &req
);
1918 static int cdrom_read_capacity(ide_drive_t
*drive
, unsigned long *capacity
,
1919 unsigned long *sectors_per_frame
,
1920 struct request_sense
*sense
)
1930 cdrom_prepare_request(drive
, &req
);
1933 req
.cmd
[0] = GPCMD_READ_CDVD_CAPACITY
;
1934 req
.data
= (char *)&capbuf
;
1935 req
.data_len
= sizeof(capbuf
);
1936 req
.cmd_flags
|= REQ_QUIET
;
1938 stat
= cdrom_queue_packet_command(drive
, &req
);
1940 *capacity
= 1 + be32_to_cpu(capbuf
.lba
);
1941 *sectors_per_frame
=
1942 be32_to_cpu(capbuf
.blocklen
) >> SECTOR_BITS
;
1948 static int cdrom_read_tocentry(ide_drive_t
*drive
, int trackno
, int msf_flag
,
1949 int format
, char *buf
, int buflen
,
1950 struct request_sense
*sense
)
1954 cdrom_prepare_request(drive
, &req
);
1958 req
.data_len
= buflen
;
1959 req
.cmd_flags
|= REQ_QUIET
;
1960 req
.cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
1961 req
.cmd
[6] = trackno
;
1962 req
.cmd
[7] = (buflen
>> 8);
1963 req
.cmd
[8] = (buflen
& 0xff);
1964 req
.cmd
[9] = (format
<< 6);
1969 return cdrom_queue_packet_command(drive
, &req
);
1973 /* Try to read the entire TOC for the disk into our internal buffer. */
1974 static int cdrom_read_toc(ide_drive_t
*drive
, struct request_sense
*sense
)
1976 int stat
, ntracks
, i
;
1977 struct cdrom_info
*info
= drive
->driver_data
;
1978 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1979 struct atapi_toc
*toc
= info
->toc
;
1981 struct atapi_toc_header hdr
;
1982 struct atapi_toc_entry ent
;
1985 unsigned long sectors_per_frame
= SECTORS_PER_FRAME
;
1988 /* Try to allocate space. */
1989 toc
= kmalloc(sizeof(struct atapi_toc
), GFP_KERNEL
);
1991 printk (KERN_ERR
"%s: No cdrom TOC buffer!\n", drive
->name
);
1997 /* Check to see if the existing data is still valid.
1998 If it is, just return. */
1999 (void) cdrom_check_status(drive
, sense
);
2001 if (info
->state_flags
.toc_valid
)
2004 /* Try to get the total cdrom capacity and sector size. */
2005 stat
= cdrom_read_capacity(drive
, &toc
->capacity
, §ors_per_frame
,
2008 toc
->capacity
= 0x1fffff;
2010 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
2011 /* Save a private copy of te TOC capacity for error handling */
2012 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
2014 blk_queue_hardsect_size(drive
->queue
,
2015 sectors_per_frame
<< SECTOR_BITS
);
2017 /* First read just the header, so we know how long the TOC is. */
2018 stat
= cdrom_read_tocentry(drive
, 0, 1, 0, (char *) &toc
->hdr
,
2019 sizeof(struct atapi_toc_header
), sense
);
2023 #if ! STANDARD_ATAPI
2024 if (info
->config_flags
.toctracks_as_bcd
) {
2025 toc
->hdr
.first_track
= bcd2bin(toc
->hdr
.first_track
);
2026 toc
->hdr
.last_track
= bcd2bin(toc
->hdr
.last_track
);
2028 #endif /* not STANDARD_ATAPI */
2030 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
2033 if (ntracks
> MAX_TRACKS
)
2034 ntracks
= MAX_TRACKS
;
2036 /* Now read the whole schmeer. */
2037 stat
= cdrom_read_tocentry(drive
, toc
->hdr
.first_track
, 1, 0,
2039 sizeof(struct atapi_toc_header
) +
2041 sizeof(struct atapi_toc_entry
), sense
);
2043 if (stat
&& toc
->hdr
.first_track
> 1) {
2044 /* Cds with CDI tracks only don't have any TOC entries,
2045 despite of this the returned values are
2046 first_track == last_track = number of CDI tracks + 1,
2047 so that this case is indistinguishable from the same
2048 layout plus an additional audio track.
2049 If we get an error for the regular case, we assume
2050 a CDI without additional audio tracks. In this case
2051 the readable TOC is empty (CDI tracks are not included)
2052 and only holds the Leadout entry. Heiko Eißfeldt */
2054 stat
= cdrom_read_tocentry(drive
, CDROM_LEADOUT
, 1, 0,
2056 sizeof(struct atapi_toc_header
) +
2058 sizeof(struct atapi_toc_entry
),
2063 #if ! STANDARD_ATAPI
2064 if (info
->config_flags
.toctracks_as_bcd
) {
2065 toc
->hdr
.first_track
= bin2bcd(CDROM_LEADOUT
);
2066 toc
->hdr
.last_track
= bin2bcd(CDROM_LEADOUT
);
2068 #endif /* not STANDARD_ATAPI */
2070 toc
->hdr
.first_track
= CDROM_LEADOUT
;
2071 toc
->hdr
.last_track
= CDROM_LEADOUT
;
2078 toc
->hdr
.toc_length
= ntohs (toc
->hdr
.toc_length
);
2080 #if ! STANDARD_ATAPI
2081 if (info
->config_flags
.toctracks_as_bcd
) {
2082 toc
->hdr
.first_track
= bcd2bin(toc
->hdr
.first_track
);
2083 toc
->hdr
.last_track
= bcd2bin(toc
->hdr
.last_track
);
2085 #endif /* not STANDARD_ATAPI */
2087 for (i
=0; i
<=ntracks
; i
++) {
2088 #if ! STANDARD_ATAPI
2089 if (info
->config_flags
.tocaddr_as_bcd
) {
2090 if (info
->config_flags
.toctracks_as_bcd
)
2091 toc
->ent
[i
].track
= bcd2bin(toc
->ent
[i
].track
);
2092 msf_from_bcd(&toc
->ent
[i
].addr
.msf
);
2094 #endif /* not STANDARD_ATAPI */
2095 toc
->ent
[i
].addr
.lba
= msf_to_lba (toc
->ent
[i
].addr
.msf
.minute
,
2096 toc
->ent
[i
].addr
.msf
.second
,
2097 toc
->ent
[i
].addr
.msf
.frame
);
2100 /* Read the multisession information. */
2101 if (toc
->hdr
.first_track
!= CDROM_LEADOUT
) {
2102 /* Read the multisession information. */
2103 stat
= cdrom_read_tocentry(drive
, 0, 0, 1, (char *)&ms_tmp
,
2104 sizeof(ms_tmp
), sense
);
2108 toc
->last_session_lba
= be32_to_cpu(ms_tmp
.ent
.addr
.lba
);
2110 ms_tmp
.hdr
.first_track
= ms_tmp
.hdr
.last_track
= CDROM_LEADOUT
;
2111 toc
->last_session_lba
= msf_to_lba(0, 2, 0); /* 0m 2s 0f */
2114 #if ! STANDARD_ATAPI
2115 if (info
->config_flags
.tocaddr_as_bcd
) {
2116 /* Re-read multisession information using MSF format */
2117 stat
= cdrom_read_tocentry(drive
, 0, 1, 1, (char *)&ms_tmp
,
2118 sizeof(ms_tmp
), sense
);
2122 msf_from_bcd (&ms_tmp
.ent
.addr
.msf
);
2123 toc
->last_session_lba
= msf_to_lba(ms_tmp
.ent
.addr
.msf
.minute
,
2124 ms_tmp
.ent
.addr
.msf
.second
,
2125 ms_tmp
.ent
.addr
.msf
.frame
);
2127 #endif /* not STANDARD_ATAPI */
2129 toc
->xa_flag
= (ms_tmp
.hdr
.first_track
!= ms_tmp
.hdr
.last_track
);
2131 /* Now try to get the total cdrom capacity. */
2132 stat
= cdrom_get_last_written(cdi
, &last_written
);
2133 if (!stat
&& (last_written
> toc
->capacity
)) {
2134 toc
->capacity
= last_written
;
2135 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
2136 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
2139 /* Remember that we've read this stuff. */
2140 info
->state_flags
.toc_valid
= 1;
2146 static int cdrom_read_subchannel(ide_drive_t
*drive
, int format
, char *buf
,
2147 int buflen
, struct request_sense
*sense
)
2151 cdrom_prepare_request(drive
, &req
);
2155 req
.data_len
= buflen
;
2156 req
.cmd
[0] = GPCMD_READ_SUBCHANNEL
;
2157 req
.cmd
[1] = 2; /* MSF addressing */
2158 req
.cmd
[2] = 0x40; /* request subQ data */
2159 req
.cmd
[3] = format
;
2160 req
.cmd
[7] = (buflen
>> 8);
2161 req
.cmd
[8] = (buflen
& 0xff);
2162 return cdrom_queue_packet_command(drive
, &req
);
2165 /* ATAPI cdrom drives are free to select the speed you request or any slower
2166 rate :-( Requesting too fast a speed will _not_ produce an error. */
2167 static int cdrom_select_speed(ide_drive_t
*drive
, int speed
,
2168 struct request_sense
*sense
)
2170 struct cdrom_info
*cd
= drive
->driver_data
;
2171 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
2173 cdrom_prepare_request(drive
, &req
);
2177 speed
= 0xffff; /* set to max */
2179 speed
*= 177; /* Nx to kbytes/s */
2181 req
.cmd
[0] = GPCMD_SET_SPEED
;
2182 /* Read Drive speed in kbytes/second MSB */
2183 req
.cmd
[2] = (speed
>> 8) & 0xff;
2184 /* Read Drive speed in kbytes/second LSB */
2185 req
.cmd
[3] = speed
& 0xff;
2186 if ((cdi
->mask
& (CDC_CD_R
| CDC_CD_RW
| CDC_DVD_R
)) !=
2187 (CDC_CD_R
| CDC_CD_RW
| CDC_DVD_R
)) {
2188 /* Write Drive speed in kbytes/second MSB */
2189 req
.cmd
[4] = (speed
>> 8) & 0xff;
2190 /* Write Drive speed in kbytes/second LSB */
2191 req
.cmd
[5] = speed
& 0xff;
2194 return cdrom_queue_packet_command(drive
, &req
);
2197 static int cdrom_play_audio(ide_drive_t
*drive
, int lba_start
, int lba_end
)
2199 struct request_sense sense
;
2202 cdrom_prepare_request(drive
, &req
);
2205 req
.cmd
[0] = GPCMD_PLAY_AUDIO_MSF
;
2206 lba_to_msf(lba_start
, &req
.cmd
[3], &req
.cmd
[4], &req
.cmd
[5]);
2207 lba_to_msf(lba_end
-1, &req
.cmd
[6], &req
.cmd
[7], &req
.cmd
[8]);
2209 return cdrom_queue_packet_command(drive
, &req
);
2212 static int cdrom_get_toc_entry(ide_drive_t
*drive
, int track
,
2213 struct atapi_toc_entry
**ent
)
2215 struct cdrom_info
*info
= drive
->driver_data
;
2216 struct atapi_toc
*toc
= info
->toc
;
2220 * don't serve cached data, if the toc isn't valid
2222 if (!info
->state_flags
.toc_valid
)
2225 /* Check validity of requested track number. */
2226 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
2227 if (toc
->hdr
.first_track
== CDROM_LEADOUT
) ntracks
= 0;
2228 if (track
== CDROM_LEADOUT
)
2229 *ent
= &toc
->ent
[ntracks
];
2230 else if (track
< toc
->hdr
.first_track
||
2231 track
> toc
->hdr
.last_track
)
2234 *ent
= &toc
->ent
[track
- toc
->hdr
.first_track
];
2239 /* the generic packet interface to cdrom.c */
2240 static int ide_cdrom_packet(struct cdrom_device_info
*cdi
,
2241 struct packet_command
*cgc
)
2244 ide_drive_t
*drive
= cdi
->handle
;
2246 if (cgc
->timeout
<= 0)
2247 cgc
->timeout
= ATAPI_WAIT_PC
;
2249 /* here we queue the commands from the uniform CD-ROM
2250 layer. the packet must be complete, as we do not
2252 cdrom_prepare_request(drive
, &req
);
2253 memcpy(req
.cmd
, cgc
->cmd
, CDROM_PACKET_SIZE
);
2255 memset(cgc
->sense
, 0, sizeof(struct request_sense
));
2256 req
.data
= cgc
->buffer
;
2257 req
.data_len
= cgc
->buflen
;
2258 req
.timeout
= cgc
->timeout
;
2261 req
.cmd_flags
|= REQ_QUIET
;
2263 req
.sense
= cgc
->sense
;
2264 cgc
->stat
= cdrom_queue_packet_command(drive
, &req
);
2266 cgc
->buflen
-= req
.data_len
;
2271 int ide_cdrom_audio_ioctl (struct cdrom_device_info
*cdi
,
2272 unsigned int cmd
, void *arg
)
2275 ide_drive_t
*drive
= cdi
->handle
;
2276 struct cdrom_info
*info
= drive
->driver_data
;
2281 * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
2282 * atapi doesn't support it
2284 case CDROMPLAYTRKIND
: {
2285 unsigned long lba_start
, lba_end
;
2286 struct cdrom_ti
*ti
= arg
;
2287 struct atapi_toc_entry
*first_toc
, *last_toc
;
2289 stat
= cdrom_get_toc_entry(drive
, ti
->cdti_trk0
, &first_toc
);
2293 stat
= cdrom_get_toc_entry(drive
, ti
->cdti_trk1
, &last_toc
);
2297 if (ti
->cdti_trk1
!= CDROM_LEADOUT
)
2299 lba_start
= first_toc
->addr
.lba
;
2300 lba_end
= last_toc
->addr
.lba
;
2302 if (lba_end
<= lba_start
)
2305 return cdrom_play_audio(drive
, lba_start
, lba_end
);
2308 case CDROMREADTOCHDR
: {
2309 struct cdrom_tochdr
*tochdr
= arg
;
2310 struct atapi_toc
*toc
;
2312 /* Make sure our saved TOC is valid. */
2313 stat
= cdrom_read_toc(drive
, NULL
);
2318 tochdr
->cdth_trk0
= toc
->hdr
.first_track
;
2319 tochdr
->cdth_trk1
= toc
->hdr
.last_track
;
2324 case CDROMREADTOCENTRY
: {
2325 struct cdrom_tocentry
*tocentry
= arg
;
2326 struct atapi_toc_entry
*toce
;
2328 stat
= cdrom_get_toc_entry(drive
, tocentry
->cdte_track
, &toce
);
2332 tocentry
->cdte_ctrl
= toce
->control
;
2333 tocentry
->cdte_adr
= toce
->adr
;
2334 if (tocentry
->cdte_format
== CDROM_MSF
) {
2335 lba_to_msf (toce
->addr
.lba
,
2336 &tocentry
->cdte_addr
.msf
.minute
,
2337 &tocentry
->cdte_addr
.msf
.second
,
2338 &tocentry
->cdte_addr
.msf
.frame
);
2340 tocentry
->cdte_addr
.lba
= toce
->addr
.lba
;
2351 int ide_cdrom_reset (struct cdrom_device_info
*cdi
)
2353 ide_drive_t
*drive
= cdi
->handle
;
2354 struct cdrom_info
*cd
= drive
->driver_data
;
2355 struct request_sense sense
;
2359 cdrom_prepare_request(drive
, &req
);
2360 req
.cmd_type
= REQ_TYPE_SPECIAL
;
2361 req
.cmd_flags
= REQ_QUIET
;
2362 ret
= ide_do_drive_cmd(drive
, &req
, ide_wait
);
2365 * A reset will unlock the door. If it was previously locked,
2368 if (cd
->state_flags
.door_locked
)
2369 (void) cdrom_lockdoor(drive
, 1, &sense
);
2376 int ide_cdrom_tray_move (struct cdrom_device_info
*cdi
, int position
)
2378 ide_drive_t
*drive
= cdi
->handle
;
2379 struct request_sense sense
;
2382 int stat
= cdrom_lockdoor(drive
, 0, &sense
);
2387 return cdrom_eject(drive
, !position
, &sense
);
2391 int ide_cdrom_lock_door (struct cdrom_device_info
*cdi
, int lock
)
2393 ide_drive_t
*drive
= cdi
->handle
;
2394 return cdrom_lockdoor(drive
, lock
, NULL
);
2398 int ide_cdrom_get_capabilities(ide_drive_t
*drive
, struct atapi_capabilities_page
*cap
)
2400 struct cdrom_info
*info
= drive
->driver_data
;
2401 struct cdrom_device_info
*cdi
= &info
->devinfo
;
2402 struct packet_command cgc
;
2403 int stat
, attempts
= 3, size
= sizeof(*cap
);
2406 * ACER50 (and others?) require the full spec length mode sense
2407 * page capabilities size, but older drives break.
2409 if (!(!strcmp(drive
->id
->model
, "ATAPI CD ROM DRIVE 50X MAX") ||
2410 !strcmp(drive
->id
->model
, "WPI CDS-32X")))
2411 size
-= sizeof(cap
->pad
);
2413 init_cdrom_command(&cgc
, cap
, size
, CGC_DATA_UNKNOWN
);
2414 do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
2415 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CAPABILITIES_PAGE
, 0);
2418 } while (--attempts
);
2423 void ide_cdrom_update_speed (ide_drive_t
*drive
, struct atapi_capabilities_page
*cap
)
2425 struct cdrom_info
*cd
= drive
->driver_data
;
2426 u16 curspeed
, maxspeed
;
2428 /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */
2429 if (!drive
->id
->model
[0] &&
2430 !strncmp(drive
->id
->fw_rev
, "241N", 4)) {
2431 curspeed
= le16_to_cpu(cap
->curspeed
);
2432 maxspeed
= le16_to_cpu(cap
->maxspeed
);
2434 curspeed
= be16_to_cpu(cap
->curspeed
);
2435 maxspeed
= be16_to_cpu(cap
->maxspeed
);
2438 cd
->state_flags
.current_speed
= (curspeed
+ (176/2)) / 176;
2439 cd
->config_flags
.max_speed
= (maxspeed
+ (176/2)) / 176;
2443 int ide_cdrom_select_speed (struct cdrom_device_info
*cdi
, int speed
)
2445 ide_drive_t
*drive
= cdi
->handle
;
2446 struct cdrom_info
*cd
= drive
->driver_data
;
2447 struct request_sense sense
;
2448 struct atapi_capabilities_page cap
;
2451 if ((stat
= cdrom_select_speed(drive
, speed
, &sense
)) < 0)
2454 if (!ide_cdrom_get_capabilities(drive
, &cap
)) {
2455 ide_cdrom_update_speed(drive
, &cap
);
2456 cdi
->speed
= cd
->state_flags
.current_speed
;
2462 * add logic to try GET_EVENT command first to check for media and tray
2463 * status. this should be supported by newer cd-r/w and all DVD etc
2467 int ide_cdrom_drive_status (struct cdrom_device_info
*cdi
, int slot_nr
)
2469 ide_drive_t
*drive
= cdi
->handle
;
2470 struct media_event_desc med
;
2471 struct request_sense sense
;
2474 if (slot_nr
!= CDSL_CURRENT
)
2477 stat
= cdrom_check_status(drive
, &sense
);
2478 if (!stat
|| sense
.sense_key
== UNIT_ATTENTION
)
2481 if (!cdrom_get_media_event(cdi
, &med
)) {
2482 if (med
.media_present
)
2484 else if (med
.door_open
)
2485 return CDS_TRAY_OPEN
;
2490 if (sense
.sense_key
== NOT_READY
&& sense
.asc
== 0x04 && sense
.ascq
== 0x04)
2494 * If not using Mt Fuji extended media tray reports,
2495 * just return TRAY_OPEN since ATAPI doesn't provide
2496 * any other way to detect this...
2498 if (sense
.sense_key
== NOT_READY
) {
2499 if (sense
.asc
== 0x3a && sense
.ascq
== 1)
2502 return CDS_TRAY_OPEN
;
2504 return CDS_DRIVE_NOT_READY
;
2508 int ide_cdrom_get_last_session (struct cdrom_device_info
*cdi
,
2509 struct cdrom_multisession
*ms_info
)
2511 struct atapi_toc
*toc
;
2512 ide_drive_t
*drive
= cdi
->handle
;
2513 struct cdrom_info
*info
= drive
->driver_data
;
2514 struct request_sense sense
;
2517 if (!info
->state_flags
.toc_valid
|| info
->toc
== NULL
)
2518 if ((ret
= cdrom_read_toc(drive
, &sense
)))
2522 ms_info
->addr
.lba
= toc
->last_session_lba
;
2523 ms_info
->xa_flag
= toc
->xa_flag
;
2529 int ide_cdrom_get_mcn (struct cdrom_device_info
*cdi
,
2530 struct cdrom_mcn
*mcn_info
)
2534 ide_drive_t
*drive
= cdi
->handle
;
2537 if ((stat
= cdrom_read_subchannel(drive
, 2, mcnbuf
, sizeof (mcnbuf
), NULL
)))
2540 memcpy (mcn_info
->medium_catalog_number
, mcnbuf
+9,
2541 sizeof (mcn_info
->medium_catalog_number
)-1);
2542 mcn_info
->medium_catalog_number
[sizeof (mcn_info
->medium_catalog_number
)-1]
2550 /****************************************************************************
2551 * Other driver requests (open, close, check media change).
2555 int ide_cdrom_check_media_change_real (struct cdrom_device_info
*cdi
,
2558 ide_drive_t
*drive
= cdi
->handle
;
2559 struct cdrom_info
*cd
= drive
->driver_data
;
2562 if (slot_nr
== CDSL_CURRENT
) {
2563 (void) cdrom_check_status(drive
, NULL
);
2564 retval
= cd
->state_flags
.media_changed
;
2565 cd
->state_flags
.media_changed
= 0;
2574 int ide_cdrom_open_real (struct cdrom_device_info
*cdi
, int purpose
)
2580 * Close down the device. Invalidate all cached blocks.
2584 void ide_cdrom_release_real (struct cdrom_device_info
*cdi
)
2586 ide_drive_t
*drive
= cdi
->handle
;
2587 struct cdrom_info
*cd
= drive
->driver_data
;
2589 if (!cdi
->use_count
)
2590 cd
->state_flags
.toc_valid
= 0;
2593 #define IDE_CD_CAPABILITIES \
2594 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
2595 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
2596 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
2597 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
2598 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
2600 static struct cdrom_device_ops ide_cdrom_dops
= {
2601 .open
= ide_cdrom_open_real
,
2602 .release
= ide_cdrom_release_real
,
2603 .drive_status
= ide_cdrom_drive_status
,
2604 .media_changed
= ide_cdrom_check_media_change_real
,
2605 .tray_move
= ide_cdrom_tray_move
,
2606 .lock_door
= ide_cdrom_lock_door
,
2607 .select_speed
= ide_cdrom_select_speed
,
2608 .get_last_session
= ide_cdrom_get_last_session
,
2609 .get_mcn
= ide_cdrom_get_mcn
,
2610 .reset
= ide_cdrom_reset
,
2611 .audio_ioctl
= ide_cdrom_audio_ioctl
,
2612 .capability
= IDE_CD_CAPABILITIES
,
2613 .generic_packet
= ide_cdrom_packet
,
2616 static int ide_cdrom_register (ide_drive_t
*drive
, int nslots
)
2618 struct cdrom_info
*info
= drive
->driver_data
;
2619 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
2621 devinfo
->ops
= &ide_cdrom_dops
;
2622 devinfo
->speed
= info
->state_flags
.current_speed
;
2623 devinfo
->capacity
= nslots
;
2624 devinfo
->handle
= drive
;
2625 strcpy(devinfo
->name
, drive
->name
);
2627 if (info
->config_flags
.no_speed_select
)
2628 devinfo
->mask
|= CDC_SELECT_SPEED
;
2630 devinfo
->disk
= info
->disk
;
2631 return register_cdrom(devinfo
);
2635 int ide_cdrom_probe_capabilities (ide_drive_t
*drive
)
2637 struct cdrom_info
*cd
= drive
->driver_data
;
2638 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
2639 struct atapi_capabilities_page cap
;
2642 cdi
->mask
= (CDC_CD_R
| CDC_CD_RW
| CDC_DVD
| CDC_DVD_R
|
2643 CDC_DVD_RAM
| CDC_SELECT_DISC
| CDC_PLAY_AUDIO
|
2644 CDC_MO_DRIVE
| CDC_RAM
);
2646 if (drive
->media
== ide_optical
) {
2647 cdi
->mask
&= ~(CDC_MO_DRIVE
| CDC_RAM
);
2648 printk(KERN_ERR
"%s: ATAPI magneto-optical drive\n", drive
->name
);
2652 if (cd
->config_flags
.nec260
||
2653 !strcmp(drive
->id
->model
,"STINGRAY 8422 IDE 8X CD-ROM 7-27-95")) {
2654 cd
->config_flags
.no_eject
= 0;
2655 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
2660 * we have to cheat a little here. the packet will eventually
2661 * be queued with ide_cdrom_packet(), which extracts the
2662 * drive from cdi->handle. Since this device hasn't been
2663 * registered with the Uniform layer yet, it can't do this.
2664 * Same goes for cdi->ops.
2666 cdi
->handle
= drive
;
2667 cdi
->ops
= &ide_cdrom_dops
;
2669 if (ide_cdrom_get_capabilities(drive
, &cap
))
2673 cd
->config_flags
.no_doorlock
= 1;
2675 cd
->config_flags
.no_eject
= 0;
2677 cdi
->mask
&= ~CDC_CD_R
;
2678 if (cap
.cd_rw_write
)
2679 cdi
->mask
&= ~(CDC_CD_RW
| CDC_RAM
);
2680 if (cap
.dvd_ram_read
|| cap
.dvd_r_read
|| cap
.dvd_rom
)
2681 cdi
->mask
&= ~CDC_DVD
;
2682 if (cap
.dvd_ram_write
)
2683 cdi
->mask
&= ~(CDC_DVD_RAM
| CDC_RAM
);
2684 if (cap
.dvd_r_write
)
2685 cdi
->mask
&= ~CDC_DVD_R
;
2687 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
2688 if (cap
.mechtype
== mechtype_caddy
|| cap
.mechtype
== mechtype_popup
)
2689 cdi
->mask
|= CDC_CLOSE_TRAY
;
2691 /* Some drives used by Apple don't advertise audio play
2692 * but they do support reading TOC & audio datas
2694 if (strcmp(drive
->id
->model
, "MATSHITADVD-ROM SR-8187") == 0 ||
2695 strcmp(drive
->id
->model
, "MATSHITADVD-ROM SR-8186") == 0 ||
2696 strcmp(drive
->id
->model
, "MATSHITADVD-ROM SR-8176") == 0 ||
2697 strcmp(drive
->id
->model
, "MATSHITADVD-ROM SR-8174") == 0)
2698 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
2700 #if ! STANDARD_ATAPI
2701 if (cdi
->sanyo_slot
> 0) {
2702 cdi
->mask
&= ~CDC_SELECT_DISC
;
2707 #endif /* not STANDARD_ATAPI */
2708 if (cap
.mechtype
== mechtype_individual_changer
||
2709 cap
.mechtype
== mechtype_cartridge_changer
) {
2710 nslots
= cdrom_number_of_slots(cdi
);
2712 cdi
->mask
&= ~CDC_SELECT_DISC
;
2715 ide_cdrom_update_speed(drive
, &cap
);
2717 printk(KERN_INFO
"%s: ATAPI", drive
->name
);
2719 /* don't print speed if the drive reported 0 */
2720 if (cd
->config_flags
.max_speed
)
2721 printk(KERN_CONT
" %dX", cd
->config_flags
.max_speed
);
2723 printk(KERN_CONT
" %s", (cdi
->mask
& CDC_DVD
) ? "CD-ROM" : "DVD-ROM");
2725 if ((cdi
->mask
& CDC_DVD_R
) == 0 || (cdi
->mask
& CDC_DVD_RAM
) == 0)
2726 printk(KERN_CONT
" DVD%s%s",
2727 (cdi
->mask
& CDC_DVD_R
) ? "" : "-R",
2728 (cdi
->mask
& CDC_DVD_RAM
) ? "" : "-RAM");
2730 if ((cdi
->mask
& CDC_CD_R
) == 0 || (cdi
->mask
& CDC_CD_RW
) == 0)
2731 printk(KERN_CONT
" CD%s%s",
2732 (cdi
->mask
& CDC_CD_R
) ? "" : "-R",
2733 (cdi
->mask
& CDC_CD_RW
) ? "" : "/RW");
2735 if ((cdi
->mask
& CDC_SELECT_DISC
) == 0)
2736 printk(KERN_CONT
" changer w/%d slots", nslots
);
2738 printk(KERN_CONT
" drive");
2740 printk(KERN_CONT
", %dkB Cache\n", be16_to_cpu(cap
.buffer_size
));
2745 #ifdef CONFIG_IDE_PROC_FS
2746 static void ide_cdrom_add_settings(ide_drive_t
*drive
)
2748 ide_add_setting(drive
, "dsc_overlap", SETTING_RW
, TYPE_BYTE
, 0, 1, 1, 1, &drive
->dsc_overlap
, NULL
);
2751 static inline void ide_cdrom_add_settings(ide_drive_t
*drive
) { ; }
2755 * standard prep_rq_fn that builds 10 byte cmds
2757 static int ide_cdrom_prep_fs(struct request_queue
*q
, struct request
*rq
)
2759 int hard_sect
= queue_hardsect_size(q
);
2760 long block
= (long)rq
->hard_sector
/ (hard_sect
>> 9);
2761 unsigned long blocks
= rq
->hard_nr_sectors
/ (hard_sect
>> 9);
2763 memset(rq
->cmd
, 0, sizeof(rq
->cmd
));
2765 if (rq_data_dir(rq
) == READ
)
2766 rq
->cmd
[0] = GPCMD_READ_10
;
2768 rq
->cmd
[0] = GPCMD_WRITE_10
;
2773 rq
->cmd
[2] = (block
>> 24) & 0xff;
2774 rq
->cmd
[3] = (block
>> 16) & 0xff;
2775 rq
->cmd
[4] = (block
>> 8) & 0xff;
2776 rq
->cmd
[5] = block
& 0xff;
2779 * and transfer length
2781 rq
->cmd
[7] = (blocks
>> 8) & 0xff;
2782 rq
->cmd
[8] = blocks
& 0xff;
2788 * Most of the SCSI commands are supported directly by ATAPI devices.
2789 * This transform handles the few exceptions.
2791 static int ide_cdrom_prep_pc(struct request
*rq
)
2796 * Transform 6-byte read/write commands to the 10-byte version
2798 if (c
[0] == READ_6
|| c
[0] == WRITE_6
) {
2805 c
[0] += (READ_10
- READ_6
);
2811 * it's silly to pretend we understand 6-byte sense commands, just
2812 * reject with ILLEGAL_REQUEST and the caller should take the
2813 * appropriate action
2815 if (c
[0] == MODE_SENSE
|| c
[0] == MODE_SELECT
) {
2816 rq
->errors
= ILLEGAL_REQUEST
;
2817 return BLKPREP_KILL
;
2823 static int ide_cdrom_prep_fn(struct request_queue
*q
, struct request
*rq
)
2825 if (blk_fs_request(rq
))
2826 return ide_cdrom_prep_fs(q
, rq
);
2827 else if (blk_pc_request(rq
))
2828 return ide_cdrom_prep_pc(rq
);
2834 int ide_cdrom_setup (ide_drive_t
*drive
)
2836 struct cdrom_info
*cd
= drive
->driver_data
;
2837 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
2840 blk_queue_prep_rq(drive
->queue
, ide_cdrom_prep_fn
);
2841 blk_queue_dma_alignment(drive
->queue
, 31);
2842 drive
->queue
->unplug_delay
= (1 * HZ
) / 1000;
2843 if (!drive
->queue
->unplug_delay
)
2844 drive
->queue
->unplug_delay
= 1;
2846 drive
->special
.all
= 0;
2848 cd
->state_flags
.media_changed
= 1;
2851 cd
->config_flags
.no_doorlock
= 1;
2853 if ((drive
->id
->config
& 0x0060) == 0x20)
2854 cd
->config_flags
.drq_interrupt
= 1;
2855 cd
->config_flags
.no_eject
= 1;
2857 /* limit transfer size per interrupt. */
2858 /* a testament to the nice quality of Samsung drives... */
2859 if (!strcmp(drive
->id
->model
, "SAMSUNG CD-ROM SCR-2430") ||
2860 !strcmp(drive
->id
->model
, "SAMSUNG CD-ROM SCR-2432"))
2861 cd
->config_flags
.limit_nframes
= 1;
2862 /* the 3231 model does not support the SET_CD_SPEED command */
2863 else if (!strcmp(drive
->id
->model
, "SAMSUNG CD-ROM SCR-3231"))
2864 cd
->config_flags
.no_speed_select
= 1;
2866 #if ! STANDARD_ATAPI
2867 if (strcmp (drive
->id
->model
, "V003S0DS") == 0 &&
2868 drive
->id
->fw_rev
[4] == '1' &&
2869 drive
->id
->fw_rev
[6] <= '2') {
2871 Some versions of this drive like to talk BCD. */
2872 cd
->config_flags
.toctracks_as_bcd
= 1;
2873 cd
->config_flags
.tocaddr_as_bcd
= 1;
2875 else if (strcmp (drive
->id
->model
, "V006E0DS") == 0 &&
2876 drive
->id
->fw_rev
[4] == '1' &&
2877 drive
->id
->fw_rev
[6] <= '2') {
2878 /* Vertos 600 ESD. */
2879 cd
->config_flags
.toctracks_as_bcd
= 1;
2881 else if (strcmp(drive
->id
->model
, "NEC CD-ROM DRIVE:260") == 0 &&
2882 strncmp(drive
->id
->fw_rev
, "1.01", 4) == 0) { /* FIXME */
2883 /* Old NEC260 (not R).
2884 This drive was released before the 1.2 version
2886 cd
->config_flags
.tocaddr_as_bcd
= 1;
2887 cd
->config_flags
.nec260
= 1;
2890 * Sanyo 3 CD changer uses a non-standard command for CD changing
2891 * (by default standard ATAPI support for CD changers is used).
2893 else if ((strcmp(drive
->id
->model
, "CD-ROM CDR-C3 G") == 0) ||
2894 (strcmp(drive
->id
->model
, "CD-ROM CDR-C3G") == 0) ||
2895 (strcmp(drive
->id
->model
, "CD-ROM CDR_C36") == 0)) {
2896 /* uses CD in slot 0 when value is set to 3 */
2897 cdi
->sanyo_slot
= 3;
2899 #endif /* not STANDARD_ATAPI */
2901 nslots
= ide_cdrom_probe_capabilities (drive
);
2904 * set correct block size
2906 blk_queue_hardsect_size(drive
->queue
, CD_FRAMESIZE
);
2908 if (drive
->autotune
== IDE_TUNE_DEFAULT
||
2909 drive
->autotune
== IDE_TUNE_AUTO
)
2910 drive
->dsc_overlap
= (drive
->next
!= drive
);
2912 if (ide_cdrom_register(drive
, nslots
)) {
2913 printk (KERN_ERR
"%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive
->name
);
2914 cd
->devinfo
.handle
= NULL
;
2917 ide_cdrom_add_settings(drive
);
2921 #ifdef CONFIG_IDE_PROC_FS
2923 sector_t
ide_cdrom_capacity (ide_drive_t
*drive
)
2925 unsigned long capacity
, sectors_per_frame
;
2927 if (cdrom_read_capacity(drive
, &capacity
, §ors_per_frame
, NULL
))
2930 return capacity
* sectors_per_frame
;
2934 static void ide_cd_remove(ide_drive_t
*drive
)
2936 struct cdrom_info
*info
= drive
->driver_data
;
2938 ide_proc_unregister_driver(drive
, info
->driver
);
2940 del_gendisk(info
->disk
);
2945 static void ide_cd_release(struct kref
*kref
)
2947 struct cdrom_info
*info
= to_ide_cd(kref
);
2948 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
2949 ide_drive_t
*drive
= info
->drive
;
2950 struct gendisk
*g
= info
->disk
;
2952 kfree(info
->buffer
);
2954 if (devinfo
->handle
== drive
&& unregister_cdrom(devinfo
))
2955 printk(KERN_ERR
"%s: %s failed to unregister device from the cdrom "
2956 "driver.\n", __FUNCTION__
, drive
->name
);
2957 drive
->dsc_overlap
= 0;
2958 drive
->driver_data
= NULL
;
2959 blk_queue_prep_rq(drive
->queue
, NULL
);
2960 g
->private_data
= NULL
;
2965 static int ide_cd_probe(ide_drive_t
*);
2967 #ifdef CONFIG_IDE_PROC_FS
2968 static int proc_idecd_read_capacity
2969 (char *page
, char **start
, off_t off
, int count
, int *eof
, void *data
)
2971 ide_drive_t
*drive
= data
;
2974 len
= sprintf(page
,"%llu\n", (long long)ide_cdrom_capacity(drive
));
2975 PROC_IDE_READ_RETURN(page
,start
,off
,count
,eof
,len
);
2978 static ide_proc_entry_t idecd_proc
[] = {
2979 { "capacity", S_IFREG
|S_IRUGO
, proc_idecd_read_capacity
, NULL
},
2980 { NULL
, 0, NULL
, NULL
}
2984 static ide_driver_t ide_cdrom_driver
= {
2986 .owner
= THIS_MODULE
,
2987 .name
= "ide-cdrom",
2988 .bus
= &ide_bus_type
,
2990 .probe
= ide_cd_probe
,
2991 .remove
= ide_cd_remove
,
2992 .version
= IDECD_VERSION
,
2994 .supports_dsc_overlap
= 1,
2995 .do_request
= ide_do_rw_cdrom
,
2996 .end_request
= ide_end_request
,
2997 .error
= __ide_error
,
2998 .abort
= __ide_abort
,
2999 #ifdef CONFIG_IDE_PROC_FS
3004 static int idecd_open(struct inode
* inode
, struct file
* file
)
3006 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
3007 struct cdrom_info
*info
;
3010 if (!(info
= ide_cd_get(disk
)))
3014 info
->buffer
= kmalloc(SECTOR_BUFFER_SIZE
, GFP_KERNEL
|__GFP_REPEAT
);
3017 rc
= cdrom_open(&info
->devinfo
, inode
, file
);
3025 static int idecd_release(struct inode
* inode
, struct file
* file
)
3027 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
3028 struct cdrom_info
*info
= ide_cd_g(disk
);
3030 cdrom_release (&info
->devinfo
, file
);
3037 static int idecd_set_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
3039 struct packet_command cgc
;
3044 if (copy_from_user(&spindown
, (void __user
*)arg
, sizeof(char)))
3047 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
3049 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
3053 buffer
[11] = (buffer
[11] & 0xf0) | (spindown
& 0x0f);
3054 return cdrom_mode_select(cdi
, &cgc
);
3057 static int idecd_get_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
3059 struct packet_command cgc
;
3064 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
3066 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
3070 spindown
= buffer
[11] & 0x0f;
3071 if (copy_to_user((void __user
*)arg
, &spindown
, sizeof (char)))
3076 static int idecd_ioctl (struct inode
*inode
, struct file
*file
,
3077 unsigned int cmd
, unsigned long arg
)
3079 struct block_device
*bdev
= inode
->i_bdev
;
3080 struct cdrom_info
*info
= ide_cd_g(bdev
->bd_disk
);
3084 case CDROMSETSPINDOWN
:
3085 return idecd_set_spindown(&info
->devinfo
, arg
);
3086 case CDROMGETSPINDOWN
:
3087 return idecd_get_spindown(&info
->devinfo
, arg
);
3092 err
= generic_ide_ioctl(info
->drive
, file
, bdev
, cmd
, arg
);
3094 err
= cdrom_ioctl(file
, &info
->devinfo
, inode
, cmd
, arg
);
3099 static int idecd_media_changed(struct gendisk
*disk
)
3101 struct cdrom_info
*info
= ide_cd_g(disk
);
3102 return cdrom_media_changed(&info
->devinfo
);
3105 static int idecd_revalidate_disk(struct gendisk
*disk
)
3107 struct cdrom_info
*info
= ide_cd_g(disk
);
3108 struct request_sense sense
;
3109 cdrom_read_toc(info
->drive
, &sense
);
3113 static struct block_device_operations idecd_ops
= {
3114 .owner
= THIS_MODULE
,
3116 .release
= idecd_release
,
3117 .ioctl
= idecd_ioctl
,
3118 .media_changed
= idecd_media_changed
,
3119 .revalidate_disk
= idecd_revalidate_disk
3123 static char *ignore
= NULL
;
3125 module_param(ignore
, charp
, 0400);
3126 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
3128 static int ide_cd_probe(ide_drive_t
*drive
)
3130 struct cdrom_info
*info
;
3132 struct request_sense sense
;
3134 if (!strstr("ide-cdrom", drive
->driver_req
))
3136 if (!drive
->present
)
3138 if (drive
->media
!= ide_cdrom
&& drive
->media
!= ide_optical
)
3140 /* skip drives that we were told to ignore */
3141 if (ignore
!= NULL
) {
3142 if (strstr(ignore
, drive
->name
)) {
3143 printk(KERN_INFO
"ide-cd: ignoring drive %s\n", drive
->name
);
3148 printk(KERN_INFO
"ide-cd: passing drive %s to ide-scsi emulation.\n", drive
->name
);
3151 info
= kzalloc(sizeof(struct cdrom_info
), GFP_KERNEL
);
3153 printk(KERN_ERR
"%s: Can't allocate a cdrom structure\n", drive
->name
);
3157 g
= alloc_disk(1 << PARTN_BITS
);
3161 ide_init_disk(g
, drive
);
3163 ide_proc_register_driver(drive
, &ide_cdrom_driver
);
3165 kref_init(&info
->kref
);
3167 info
->drive
= drive
;
3168 info
->driver
= &ide_cdrom_driver
;
3171 g
->private_data
= &info
->driver
;
3173 drive
->driver_data
= info
;
3176 g
->driverfs_dev
= &drive
->gendev
;
3177 g
->flags
= GENHD_FL_CD
| GENHD_FL_REMOVABLE
;
3178 if (ide_cdrom_setup(drive
)) {
3179 ide_proc_unregister_driver(drive
, &ide_cdrom_driver
);
3180 ide_cd_release(&info
->kref
);
3184 cdrom_read_toc(drive
, &sense
);
3185 g
->fops
= &idecd_ops
;
3186 g
->flags
|= GENHD_FL_REMOVABLE
;
3196 static void __exit
ide_cdrom_exit(void)
3198 driver_unregister(&ide_cdrom_driver
.gen_driver
);
3201 static int __init
ide_cdrom_init(void)
3203 return driver_register(&ide_cdrom_driver
.gen_driver
);
3206 MODULE_ALIAS("ide:*m-cdrom*");
3207 module_init(ide_cdrom_init
);
3208 module_exit(ide_cdrom_exit
);
3209 MODULE_LICENSE("GPL");