4 * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
7 * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz
9 * May be copied or modified under the terms of the GNU General Public
10 * License. See linux/COPYING for more information.
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 * For historical changelog please see:
23 * Documentation/ide/ChangeLog.ide-cd.1994-2004
26 #define IDECD_VERSION "5.00"
28 #include <linux/module.h>
29 #include <linux/types.h>
30 #include <linux/kernel.h>
31 #include <linux/delay.h>
32 #include <linux/timer.h>
33 #include <linux/slab.h>
34 #include <linux/interrupt.h>
35 #include <linux/errno.h>
36 #include <linux/cdrom.h>
37 #include <linux/ide.h>
38 #include <linux/completion.h>
39 #include <linux/mutex.h>
40 #include <linux/bcd.h>
42 /* For SCSI -> ATAPI command conversion */
43 #include <scsi/scsi.h>
45 #include <linux/irq.h>
47 #include <asm/byteorder.h>
48 #include <linux/uaccess.h>
49 #include <asm/unaligned.h>
53 static DEFINE_MUTEX(idecd_ref_mutex
);
55 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
57 #define ide_cd_g(disk) \
58 container_of((disk)->private_data, struct cdrom_info, driver)
60 static void ide_cd_release(struct kref
*);
62 static struct cdrom_info
*ide_cd_get(struct gendisk
*disk
)
64 struct cdrom_info
*cd
= NULL
;
66 mutex_lock(&idecd_ref_mutex
);
70 if (ide_device_get(cd
->drive
)) {
71 kref_put(&cd
->kref
, ide_cd_release
);
75 mutex_unlock(&idecd_ref_mutex
);
79 static void ide_cd_put(struct cdrom_info
*cd
)
81 mutex_lock(&idecd_ref_mutex
);
82 ide_device_put(cd
->drive
);
83 kref_put(&cd
->kref
, ide_cd_release
);
84 mutex_unlock(&idecd_ref_mutex
);
88 * Generic packet command support and error handling routines.
91 /* Mark that we've seen a media change and invalidate our internal buffers. */
92 static void cdrom_saw_media_change(ide_drive_t
*drive
)
94 drive
->atapi_flags
|= IDE_AFLAG_MEDIA_CHANGED
;
95 drive
->atapi_flags
&= ~IDE_AFLAG_TOC_VALID
;
98 static int cdrom_log_sense(ide_drive_t
*drive
, struct request
*rq
,
99 struct request_sense
*sense
)
103 if (!sense
|| !rq
|| (rq
->cmd_flags
& REQ_QUIET
))
106 switch (sense
->sense_key
) {
108 case RECOVERED_ERROR
:
112 * don't care about tray state messages for e.g. capacity
113 * commands or in-progress or becoming ready
115 if (sense
->asc
== 0x3a || sense
->asc
== 0x04)
119 case ILLEGAL_REQUEST
:
121 * don't log START_STOP unit with LoEj set, since we cannot
122 * reliably check if drive can auto-close
124 if (rq
->cmd
[0] == GPCMD_START_STOP_UNIT
&& sense
->asc
== 0x24)
130 * Make good and sure we've seen this potential media change.
131 * Some drives (i.e. Creative) fail to present the correct sense
132 * key in the error register.
134 cdrom_saw_media_change(drive
);
143 static void cdrom_analyze_sense_data(ide_drive_t
*drive
,
144 struct request
*failed_command
,
145 struct request_sense
*sense
)
147 unsigned long sector
;
148 unsigned long bio_sectors
;
149 struct cdrom_info
*info
= drive
->driver_data
;
151 if (!cdrom_log_sense(drive
, failed_command
, sense
))
155 * If a read toc is executed for a CD-R or CD-RW medium where the first
156 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
159 if (failed_command
&& failed_command
->cmd
[0] == GPCMD_READ_TOC_PMA_ATIP
)
160 if (sense
->sense_key
== 0x05 && sense
->asc
== 0x24)
164 if (sense
->error_code
== 0x70) {
165 switch (sense
->sense_key
) {
167 case VOLUME_OVERFLOW
:
168 case ILLEGAL_REQUEST
:
171 if (failed_command
== NULL
||
172 !blk_fs_request(failed_command
))
174 sector
= (sense
->information
[0] << 24) |
175 (sense
->information
[1] << 16) |
176 (sense
->information
[2] << 8) |
177 (sense
->information
[3]);
179 if (drive
->queue
->hardsect_size
== 2048)
180 /* device sector size is 2K */
183 bio_sectors
= max(bio_sectors(failed_command
->bio
), 4U);
184 sector
&= ~(bio_sectors
- 1);
186 if (sector
< get_capacity(info
->disk
) &&
187 drive
->probed_capacity
- sector
< 4 * 75)
188 set_capacity(info
->disk
, sector
);
192 ide_cd_log_error(drive
->name
, failed_command
, sense
);
195 static void cdrom_queue_request_sense(ide_drive_t
*drive
, void *sense
,
196 struct request
*failed_command
)
198 struct cdrom_info
*info
= drive
->driver_data
;
199 struct request
*rq
= &info
->request_sense_request
;
202 sense
= &info
->sense_data
;
204 /* stuff the sense request in front of our current request */
205 blk_rq_init(NULL
, rq
);
206 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
207 rq
->rq_disk
= info
->disk
;
210 rq
->cmd
[0] = GPCMD_REQUEST_SENSE
;
214 rq
->cmd_type
= REQ_TYPE_SENSE
;
215 rq
->cmd_flags
|= REQ_PREEMPT
;
217 /* NOTE! Save the failed command in "rq->buffer" */
218 rq
->buffer
= (void *) failed_command
;
220 ide_do_drive_cmd(drive
, rq
);
223 static void cdrom_end_request(ide_drive_t
*drive
, int uptodate
)
225 struct request
*rq
= HWGROUP(drive
)->rq
;
226 int nsectors
= rq
->hard_cur_sectors
;
228 if (blk_sense_request(rq
) && uptodate
) {
230 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
233 struct request
*failed
= (struct request
*) rq
->buffer
;
234 struct cdrom_info
*info
= drive
->driver_data
;
235 void *sense
= &info
->sense_data
;
240 sense
= failed
->sense
;
241 failed
->sense_len
= rq
->sense_len
;
243 cdrom_analyze_sense_data(drive
, failed
, sense
);
245 * now end the failed request
247 if (blk_fs_request(failed
)) {
248 if (ide_end_dequeued_request(drive
, failed
, 0,
249 failed
->hard_nr_sectors
))
252 spin_lock_irqsave(&ide_lock
, flags
);
253 if (__blk_end_request(failed
, -EIO
,
256 spin_unlock_irqrestore(&ide_lock
, flags
);
259 cdrom_analyze_sense_data(drive
, NULL
, sense
);
262 if (!rq
->current_nr_sectors
&& blk_fs_request(rq
))
264 /* make sure it's fully ended */
265 if (blk_pc_request(rq
))
266 nsectors
= (rq
->data_len
+ 511) >> 9;
270 ide_end_request(drive
, uptodate
, nsectors
);
273 static void ide_dump_status_no_sense(ide_drive_t
*drive
, const char *msg
, u8 st
)
277 ide_dump_status(drive
, msg
, st
);
282 * 0: if the request should be continued.
283 * 1: if the request was ended.
285 static int cdrom_decode_status(ide_drive_t
*drive
, int good_stat
, int *stat_ret
)
287 ide_hwif_t
*hwif
= drive
->hwif
;
288 struct request
*rq
= hwif
->hwgroup
->rq
;
289 int stat
, err
, sense_key
;
291 /* check for errors */
292 stat
= hwif
->tp_ops
->read_status(hwif
);
297 if (OK_STAT(stat
, good_stat
, BAD_R_STAT
))
300 /* get the IDE error register */
301 err
= ide_read_error(drive
);
302 sense_key
= err
>> 4;
305 printk(KERN_ERR
"%s: missing rq in %s\n",
306 drive
->name
, __func__
);
310 if (blk_sense_request(rq
)) {
312 * We got an error trying to get sense info from the drive
313 * (probably while trying to recover from a former error).
316 rq
->cmd_flags
|= REQ_FAILED
;
317 cdrom_end_request(drive
, 0);
318 ide_error(drive
, "request sense failure", stat
);
321 } else if (blk_pc_request(rq
) || rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
322 /* All other functions, except for READ. */
325 * if we have an error, pass back CHECK_CONDITION as the
328 if (blk_pc_request(rq
) && !rq
->errors
)
329 rq
->errors
= SAM_STAT_CHECK_CONDITION
;
331 /* check for tray open */
332 if (sense_key
== NOT_READY
) {
333 cdrom_saw_media_change(drive
);
334 } else if (sense_key
== UNIT_ATTENTION
) {
335 /* check for media change */
336 cdrom_saw_media_change(drive
);
338 } else if (sense_key
== ILLEGAL_REQUEST
&&
339 rq
->cmd
[0] == GPCMD_START_STOP_UNIT
) {
341 * Don't print error message for this condition--
342 * SFF8090i indicates that 5/24/00 is the correct
343 * response to a request to close the tray if the
344 * drive doesn't have that capability.
345 * cdrom_log_sense() knows this!
347 } else if (!(rq
->cmd_flags
& REQ_QUIET
)) {
348 /* otherwise, print an error */
349 ide_dump_status(drive
, "packet command error", stat
);
352 rq
->cmd_flags
|= REQ_FAILED
;
355 * instead of playing games with moving completions around,
356 * remove failed request completely and end it when the
357 * request sense has completed
361 } else if (blk_fs_request(rq
)) {
362 int do_end_request
= 0;
364 /* handle errors from READ and WRITE requests */
366 if (blk_noretry_request(rq
))
369 if (sense_key
== NOT_READY
) {
371 if (rq_data_dir(rq
) == READ
) {
372 cdrom_saw_media_change(drive
);
374 /* fail the request */
375 printk(KERN_ERR
"%s: tray open\n", drive
->name
);
378 struct cdrom_info
*info
= drive
->driver_data
;
381 * Allow the drive 5 seconds to recover, some
382 * devices will return this error while flushing
386 info
->write_timeout
= jiffies
+
387 ATAPI_WAIT_WRITE_BUSY
;
389 if (time_after(jiffies
, info
->write_timeout
))
395 * take a breather relying on the unplug
396 * timer to kick us again
398 spin_lock_irqsave(&ide_lock
, flags
);
399 blk_plug_device(drive
->queue
);
400 spin_unlock_irqrestore(&ide_lock
,
405 } else if (sense_key
== UNIT_ATTENTION
) {
407 cdrom_saw_media_change(drive
);
410 * Arrange to retry the request but be sure to give up
411 * if we've retried too many times.
413 if (++rq
->errors
> ERROR_MAX
)
415 } else if (sense_key
== ILLEGAL_REQUEST
||
416 sense_key
== DATA_PROTECT
) {
418 * No point in retrying after an illegal request or data
421 ide_dump_status_no_sense(drive
, "command error", stat
);
423 } else if (sense_key
== MEDIUM_ERROR
) {
425 * No point in re-trying a zillion times on a bad
426 * sector. If we got here the error is not correctable.
428 ide_dump_status_no_sense(drive
,
429 "media error (bad sector)",
432 } else if (sense_key
== BLANK_CHECK
) {
433 /* disk appears blank ?? */
434 ide_dump_status_no_sense(drive
, "media error (blank)",
437 } else if ((err
& ~ABRT_ERR
) != 0) {
438 /* go to the default handler for other errors */
439 ide_error(drive
, "cdrom_decode_status", stat
);
441 } else if ((++rq
->errors
> ERROR_MAX
)) {
442 /* we've racked up too many retries, abort */
447 * End a request through request sense analysis when we have
448 * sense data. We need this in order to perform end of media
455 * If we got a CHECK_CONDITION status, queue
456 * a request sense command.
459 cdrom_queue_request_sense(drive
, NULL
, NULL
);
461 blk_dump_rq_flags(rq
, "ide-cd: bad rq");
462 cdrom_end_request(drive
, 0);
465 /* retry, or handle the next request */
469 if (stat
& ERR_STAT
) {
472 spin_lock_irqsave(&ide_lock
, flags
);
473 blkdev_dequeue_request(rq
);
474 HWGROUP(drive
)->rq
= NULL
;
475 spin_unlock_irqrestore(&ide_lock
, flags
);
477 cdrom_queue_request_sense(drive
, rq
->sense
, rq
);
479 cdrom_end_request(drive
, 0);
484 static int cdrom_timer_expiry(ide_drive_t
*drive
)
486 struct request
*rq
= HWGROUP(drive
)->rq
;
487 unsigned long wait
= 0;
490 * Some commands are *slow* and normally take a long time to complete.
491 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
492 * commands/drives support that. Let ide_timer_expiry keep polling us
495 switch (rq
->cmd
[0]) {
497 case GPCMD_FORMAT_UNIT
:
498 case GPCMD_RESERVE_RZONE_TRACK
:
499 case GPCMD_CLOSE_TRACK
:
500 case GPCMD_FLUSH_CACHE
:
501 wait
= ATAPI_WAIT_PC
;
504 if (!(rq
->cmd_flags
& REQ_QUIET
))
505 printk(KERN_INFO
"ide-cd: cmd 0x%x timed out\n",
514 * Set up the device registers for transferring a packet command on DEV,
515 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
516 * which actually transfers the command to the drive. If this is a
517 * drq_interrupt device, this routine will arrange for HANDLER to be
518 * called when the interrupt from the drive arrives. Otherwise, HANDLER
519 * will be called immediately after the drive is prepared for the transfer.
521 static ide_startstop_t
cdrom_start_packet_command(ide_drive_t
*drive
,
523 ide_handler_t
*handler
)
525 struct cdrom_info
*info
= drive
->driver_data
;
526 ide_hwif_t
*hwif
= drive
->hwif
;
528 /* FIXME: for Virtual DMA we must check harder */
530 info
->dma
= !hwif
->dma_ops
->dma_setup(drive
);
532 /* set up the controller registers */
533 ide_pktcmd_tf_load(drive
, IDE_TFLAG_OUT_NSECT
| IDE_TFLAG_OUT_LBAL
,
536 if (drive
->atapi_flags
& IDE_AFLAG_DRQ_INTERRUPT
) {
537 /* waiting for CDB interrupt, not DMA yet. */
539 drive
->waiting_for_dma
= 0;
542 ide_execute_command(drive
, WIN_PACKETCMD
, handler
,
543 ATAPI_WAIT_PC
, cdrom_timer_expiry
);
546 ide_execute_pkt_cmd(drive
);
548 return (*handler
) (drive
);
553 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
554 * registers must have already been prepared by cdrom_start_packet_command.
555 * HANDLER is the interrupt handler to call when the command completes or
556 * there's data ready.
558 #define ATAPI_MIN_CDB_BYTES 12
559 static ide_startstop_t
cdrom_transfer_packet_command(ide_drive_t
*drive
,
561 ide_handler_t
*handler
)
563 ide_hwif_t
*hwif
= drive
->hwif
;
565 struct cdrom_info
*info
= drive
->driver_data
;
566 ide_startstop_t startstop
;
568 if (drive
->atapi_flags
& IDE_AFLAG_DRQ_INTERRUPT
) {
570 * Here we should have been called after receiving an interrupt
571 * from the device. DRQ should how be set.
574 /* check for errors */
575 if (cdrom_decode_status(drive
, DRQ_STAT
, NULL
))
578 /* ok, next interrupt will be DMA interrupt */
580 drive
->waiting_for_dma
= 1;
582 /* otherwise, we must wait for DRQ to get set */
583 if (ide_wait_stat(&startstop
, drive
, DRQ_STAT
,
584 BUSY_STAT
, WAIT_READY
))
588 /* arm the interrupt handler */
589 ide_set_handler(drive
, handler
, rq
->timeout
, cdrom_timer_expiry
);
591 /* ATAPI commands get padded out to 12 bytes minimum */
592 cmd_len
= COMMAND_SIZE(rq
->cmd
[0]);
593 if (cmd_len
< ATAPI_MIN_CDB_BYTES
)
594 cmd_len
= ATAPI_MIN_CDB_BYTES
;
596 /* send the command to the device */
597 hwif
->tp_ops
->output_data(drive
, NULL
, rq
->cmd
, cmd_len
);
599 /* start the DMA if need be */
601 hwif
->dma_ops
->dma_start(drive
);
607 * Check the contents of the interrupt reason register from the cdrom
608 * and attempt to recover if there are problems. Returns 0 if everything's
609 * ok; nonzero if the request has been terminated.
611 static int ide_cd_check_ireason(ide_drive_t
*drive
, struct request
*rq
,
612 int len
, int ireason
, int rw
)
614 ide_hwif_t
*hwif
= drive
->hwif
;
617 * ireason == 0: the drive wants to receive data from us
618 * ireason == 2: the drive is expecting to transfer data to us
620 if (ireason
== (!rw
<< 1))
622 else if (ireason
== (rw
<< 1)) {
625 printk(KERN_ERR
"%s: %s: wrong transfer direction!\n",
626 drive
->name
, __func__
);
628 ide_pad_transfer(drive
, rw
, len
);
629 } else if (rw
== 0 && ireason
== 1) {
631 * Some drives (ASUS) seem to tell us that status info is
632 * available. Just get it and ignore.
634 (void)hwif
->tp_ops
->read_status(hwif
);
637 /* drive wants a command packet, or invalid ireason... */
638 printk(KERN_ERR
"%s: %s: bad interrupt reason 0x%02x\n",
639 drive
->name
, __func__
, ireason
);
642 if (rq
->cmd_type
== REQ_TYPE_ATA_PC
)
643 rq
->cmd_flags
|= REQ_FAILED
;
645 cdrom_end_request(drive
, 0);
650 * Assume that the drive will always provide data in multiples of at least
651 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
653 static int ide_cd_check_transfer_size(ide_drive_t
*drive
, int len
)
655 if ((len
% SECTOR_SIZE
) == 0)
658 printk(KERN_ERR
"%s: %s: Bad transfer size %d\n",
659 drive
->name
, __func__
, len
);
661 if (drive
->atapi_flags
& IDE_AFLAG_LIMIT_NFRAMES
)
662 printk(KERN_ERR
" This drive is not supported by "
663 "this version of the driver\n");
665 printk(KERN_ERR
" Trying to limit transfer sizes\n");
666 drive
->atapi_flags
|= IDE_AFLAG_LIMIT_NFRAMES
;
672 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*);
674 static ide_startstop_t
ide_cd_prepare_rw_request(ide_drive_t
*drive
,
677 if (rq_data_dir(rq
) == READ
) {
678 unsigned short sectors_per_frame
=
679 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
680 int nskip
= rq
->sector
& (sectors_per_frame
- 1);
683 * If the requested sector doesn't start on a frame boundary,
684 * we must adjust the start of the transfer so that it does,
685 * and remember to skip the first few sectors.
687 * If the rq->current_nr_sectors field is larger than the size
688 * of the buffer, it will mean that we're to skip a number of
689 * sectors equal to the amount by which rq->current_nr_sectors
690 * is larger than the buffer size.
693 /* sanity check... */
694 if (rq
->current_nr_sectors
!=
695 bio_cur_sectors(rq
->bio
)) {
696 printk(KERN_ERR
"%s: %s: buffer botch (%u)\n",
697 drive
->name
, __func__
,
698 rq
->current_nr_sectors
);
699 cdrom_end_request(drive
, 0);
702 rq
->current_nr_sectors
+= nskip
;
707 /* the immediate bit */
710 /* set up the command */
711 rq
->timeout
= ATAPI_WAIT_PC
;
717 * Routine to send a read/write packet command to the drive. This is usually
718 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
719 * devices, it is called from an interrupt when the drive is ready to accept
722 static ide_startstop_t
cdrom_start_rw_cont(ide_drive_t
*drive
)
724 struct request
*rq
= drive
->hwif
->hwgroup
->rq
;
726 /* send the command to the drive and return */
727 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
730 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
731 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
732 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
734 static ide_startstop_t
cdrom_seek_intr(ide_drive_t
*drive
)
736 struct cdrom_info
*info
= drive
->driver_data
;
738 static int retry
= 10;
740 if (cdrom_decode_status(drive
, 0, &stat
))
743 drive
->atapi_flags
|= IDE_AFLAG_SEEKING
;
745 if (retry
&& time_after(jiffies
, info
->start_seek
+ IDECD_SEEK_TIMER
)) {
747 drive
->dsc_overlap
= 0;
752 static void ide_cd_prepare_seek_request(ide_drive_t
*drive
, struct request
*rq
)
754 sector_t frame
= rq
->sector
;
756 sector_div(frame
, queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
);
758 memset(rq
->cmd
, 0, BLK_MAX_CDB
);
759 rq
->cmd
[0] = GPCMD_SEEK
;
760 put_unaligned(cpu_to_be32(frame
), (unsigned int *) &rq
->cmd
[2]);
762 rq
->timeout
= ATAPI_WAIT_PC
;
765 static ide_startstop_t
cdrom_start_seek_continuation(ide_drive_t
*drive
)
767 struct request
*rq
= drive
->hwif
->hwgroup
->rq
;
769 return cdrom_transfer_packet_command(drive
, rq
, &cdrom_seek_intr
);
773 * Fix up a possibly partially-processed request so that we can start it over
774 * entirely, or even put it back on the request queue.
776 static void restore_request(struct request
*rq
)
778 if (rq
->buffer
!= bio_data(rq
->bio
)) {
780 (rq
->buffer
- (char *)bio_data(rq
->bio
)) / SECTOR_SIZE
;
782 rq
->buffer
= bio_data(rq
->bio
);
786 rq
->current_nr_sectors
= bio_cur_sectors(rq
->bio
);
787 rq
->hard_cur_sectors
= rq
->current_nr_sectors
;
788 rq
->hard_nr_sectors
= rq
->nr_sectors
;
789 rq
->hard_sector
= rq
->sector
;
790 rq
->q
->prep_rq_fn(rq
->q
, rq
);
794 * All other packet commands.
796 static void ide_cd_request_sense_fixup(struct request
*rq
)
799 * Some of the trailing request sense fields are optional,
800 * and some drives don't send them. Sigh.
802 if (rq
->cmd
[0] == GPCMD_REQUEST_SENSE
&&
803 rq
->data_len
> 0 && rq
->data_len
<= 5)
804 while (rq
->data_len
> 0) {
805 *(u8
*)rq
->data
++ = 0;
810 int ide_cd_queue_pc(ide_drive_t
*drive
, const unsigned char *cmd
,
811 int write
, void *buffer
, unsigned *bufflen
,
812 struct request_sense
*sense
, int timeout
,
813 unsigned int cmd_flags
)
815 struct cdrom_info
*info
= drive
->driver_data
;
816 struct request_sense local_sense
;
818 unsigned int flags
= 0;
821 sense
= &local_sense
;
823 /* start of retry loop */
828 rq
= blk_get_request(drive
->queue
, write
, __GFP_WAIT
);
830 memcpy(rq
->cmd
, cmd
, BLK_MAX_CDB
);
831 rq
->cmd_type
= REQ_TYPE_ATA_PC
;
833 rq
->cmd_flags
|= cmd_flags
;
834 rq
->timeout
= timeout
;
837 rq
->data_len
= *bufflen
;
840 error
= blk_execute_rq(drive
->queue
, info
->disk
, rq
, 0);
843 *bufflen
= rq
->data_len
;
845 flags
= rq
->cmd_flags
;
849 * FIXME: we should probably abort/retry or something in case of
852 if (flags
& REQ_FAILED
) {
854 * The request failed. Retry if it was due to a unit
855 * attention status (usually means media was changed).
857 struct request_sense
*reqbuf
= sense
;
859 if (reqbuf
->sense_key
== UNIT_ATTENTION
)
860 cdrom_saw_media_change(drive
);
861 else if (reqbuf
->sense_key
== NOT_READY
&&
862 reqbuf
->asc
== 4 && reqbuf
->ascq
!= 4) {
864 * The drive is in the process of loading
865 * a disk. Retry, but wait a little to give
866 * the drive time to complete the load.
870 /* otherwise, don't retry */
876 /* end of retry loop */
877 } while ((flags
& REQ_FAILED
) && retries
>= 0);
879 /* return an error if the command failed */
880 return (flags
& REQ_FAILED
) ? -EIO
: 0;
884 * Called from blk_end_request_callback() after the data of the request is
885 * completed and before the request itself is completed. By returning value '1',
886 * blk_end_request_callback() returns immediately without completing it.
888 static int cdrom_newpc_intr_dummy_cb(struct request
*rq
)
893 static ide_startstop_t
cdrom_newpc_intr(ide_drive_t
*drive
)
895 ide_hwif_t
*hwif
= drive
->hwif
;
896 struct cdrom_info
*info
= drive
->driver_data
;
897 struct request
*rq
= HWGROUP(drive
)->rq
;
898 xfer_func_t
*xferfunc
;
899 ide_expiry_t
*expiry
= NULL
;
900 int dma_error
= 0, dma
, stat
, thislen
, uptodate
= 0;
901 int write
= (rq_data_dir(rq
) == WRITE
) ? 1 : 0;
902 unsigned int timeout
;
906 /* check for errors */
910 dma_error
= hwif
->dma_ops
->dma_end(drive
);
912 printk(KERN_ERR
"%s: DMA %s error\n", drive
->name
,
913 write
? "write" : "read");
918 if (cdrom_decode_status(drive
, 0, &stat
))
921 /* using dma, transfer is complete now */
924 return ide_error(drive
, "dma error", stat
);
925 if (blk_fs_request(rq
)) {
926 ide_end_request(drive
, 1, rq
->nr_sectors
);
932 ide_read_bcount_and_ireason(drive
, &len
, &ireason
);
934 thislen
= blk_fs_request(rq
) ? len
: rq
->data_len
;
938 /* If DRQ is clear, the command has completed. */
939 if ((stat
& DRQ_STAT
) == 0) {
940 if (blk_fs_request(rq
)) {
942 * If we're not done reading/writing, complain.
943 * Otherwise, complete the command normally.
946 if (rq
->current_nr_sectors
> 0) {
947 printk(KERN_ERR
"%s: %s: data underrun "
949 drive
->name
, __func__
,
950 rq
->current_nr_sectors
);
952 rq
->cmd_flags
|= REQ_FAILED
;
955 cdrom_end_request(drive
, uptodate
);
957 } else if (!blk_pc_request(rq
)) {
958 ide_cd_request_sense_fixup(rq
);
959 /* complain if we still have data left to transfer */
960 uptodate
= rq
->data_len
? 0 : 1;
965 /* check which way to transfer data */
966 if (ide_cd_check_ireason(drive
, rq
, len
, ireason
, write
))
969 if (blk_fs_request(rq
)) {
973 if (ide_cd_check_transfer_size(drive
, len
)) {
974 cdrom_end_request(drive
, 0);
979 * First, figure out if we need to bit-bucket
980 * any of the leading sectors.
982 nskip
= min_t(int, rq
->current_nr_sectors
983 - bio_cur_sectors(rq
->bio
),
986 ide_pad_transfer(drive
, write
, nskip
<< 9);
987 rq
->current_nr_sectors
-= nskip
;
988 thislen
-= (nskip
<< 9);
995 xferfunc
= hwif
->tp_ops
->output_data
;
998 xferfunc
= hwif
->tp_ops
->input_data
;
1002 while (thislen
> 0) {
1003 u8
*ptr
= blk_fs_request(rq
) ? NULL
: rq
->data
;
1004 int blen
= rq
->data_len
;
1008 if (blk_fs_request(rq
)) {
1010 blen
= rq
->current_nr_sectors
<< 9;
1012 ptr
= bio_data(rq
->bio
);
1013 blen
= bio_iovec(rq
->bio
)->bv_len
;
1018 if (blk_fs_request(rq
) && !write
)
1020 * If the buffers are full, pipe the rest into
1023 ide_pad_transfer(drive
, 0, thislen
);
1025 printk(KERN_ERR
"%s: confused, missing data\n",
1027 blk_dump_rq_flags(rq
, rq_data_dir(rq
)
1028 ? "cdrom_newpc_intr, write"
1029 : "cdrom_newpc_intr, read");
1037 xferfunc(drive
, NULL
, ptr
, blen
);
1042 if (blk_fs_request(rq
)) {
1044 rq
->nr_sectors
-= (blen
>> 9);
1045 rq
->current_nr_sectors
-= (blen
>> 9);
1046 rq
->sector
+= (blen
>> 9);
1048 if (rq
->current_nr_sectors
== 0 && rq
->nr_sectors
)
1049 cdrom_end_request(drive
, 1);
1051 rq
->data_len
-= blen
;
1054 * The request can't be completed until DRQ is cleared.
1055 * So complete the data, but don't complete the request
1056 * using the dummy function for the callback feature
1057 * of blk_end_request_callback().
1060 blk_end_request_callback(rq
, 0, blen
,
1061 cdrom_newpc_intr_dummy_cb
);
1065 if (!write
&& blk_sense_request(rq
))
1066 rq
->sense_len
+= blen
;
1069 /* pad, if necessary */
1070 if (!blk_fs_request(rq
) && len
> 0)
1071 ide_pad_transfer(drive
, write
, len
);
1073 if (blk_pc_request(rq
)) {
1074 timeout
= rq
->timeout
;
1076 timeout
= ATAPI_WAIT_PC
;
1077 if (!blk_fs_request(rq
))
1078 expiry
= cdrom_timer_expiry
;
1081 ide_set_handler(drive
, cdrom_newpc_intr
, timeout
, expiry
);
1085 if (blk_pc_request(rq
)) {
1086 unsigned long flags
;
1087 unsigned int dlen
= rq
->data_len
;
1092 spin_lock_irqsave(&ide_lock
, flags
);
1093 if (__blk_end_request(rq
, 0, dlen
))
1095 HWGROUP(drive
)->rq
= NULL
;
1096 spin_unlock_irqrestore(&ide_lock
, flags
);
1099 rq
->cmd_flags
|= REQ_FAILED
;
1100 cdrom_end_request(drive
, uptodate
);
1105 static ide_startstop_t
cdrom_start_rw(ide_drive_t
*drive
, struct request
*rq
)
1107 struct cdrom_info
*cd
= drive
->driver_data
;
1108 int write
= rq_data_dir(rq
) == WRITE
;
1109 unsigned short sectors_per_frame
=
1110 queue_hardsect_size(drive
->queue
) >> SECTOR_BITS
;
1113 /* disk has become write protected */
1114 if (cd
->disk
->policy
) {
1115 cdrom_end_request(drive
, 0);
1120 * We may be retrying this request after an error. Fix up any
1121 * weirdness which might be present in the request packet.
1123 restore_request(rq
);
1126 /* use DMA, if possible / writes *must* be hardware frame aligned */
1127 if ((rq
->nr_sectors
& (sectors_per_frame
- 1)) ||
1128 (rq
->sector
& (sectors_per_frame
- 1))) {
1130 cdrom_end_request(drive
, 0);
1135 cd
->dma
= drive
->using_dma
;
1138 cd
->devinfo
.media_written
= 1;
1143 static ide_startstop_t
cdrom_do_newpc_cont(ide_drive_t
*drive
)
1145 struct request
*rq
= HWGROUP(drive
)->rq
;
1147 return cdrom_transfer_packet_command(drive
, rq
, cdrom_newpc_intr
);
1150 static void cdrom_do_block_pc(ide_drive_t
*drive
, struct request
*rq
)
1152 struct cdrom_info
*info
= drive
->driver_data
;
1154 if (blk_pc_request(rq
))
1155 rq
->cmd_flags
|= REQ_QUIET
;
1157 rq
->cmd_flags
&= ~REQ_FAILED
;
1162 if (rq
->bio
|| ((rq
->cmd_type
== REQ_TYPE_ATA_PC
) && rq
->data_len
)) {
1163 struct request_queue
*q
= drive
->queue
;
1164 unsigned int alignment
;
1166 unsigned long stack_mask
= ~(THREAD_SIZE
- 1);
1169 addr
= (unsigned long)bio_data(rq
->bio
);
1171 addr
= (unsigned long)rq
->data
;
1173 info
->dma
= drive
->using_dma
;
1176 * check if dma is safe
1178 * NOTE! The "len" and "addr" checks should possibly have
1181 alignment
= queue_dma_alignment(q
) | q
->dma_pad_mask
;
1182 if (addr
& alignment
|| rq
->data_len
& alignment
)
1185 if (!((addr
& stack_mask
) ^
1186 ((unsigned long)current
->stack
& stack_mask
)))
1192 * cdrom driver request routine.
1194 static ide_startstop_t
ide_cd_do_request(ide_drive_t
*drive
, struct request
*rq
,
1197 struct cdrom_info
*info
= drive
->driver_data
;
1201 if (blk_fs_request(rq
)) {
1202 if (drive
->atapi_flags
& IDE_AFLAG_SEEKING
) {
1203 ide_hwif_t
*hwif
= drive
->hwif
;
1204 unsigned long elapsed
= jiffies
- info
->start_seek
;
1205 int stat
= hwif
->tp_ops
->read_status(hwif
);
1207 if ((stat
& SEEK_STAT
) != SEEK_STAT
) {
1208 if (elapsed
< IDECD_SEEK_TIMEOUT
) {
1209 ide_stall_queue(drive
,
1213 printk(KERN_ERR
"%s: DSC timeout\n",
1216 drive
->atapi_flags
&= ~IDE_AFLAG_SEEKING
;
1218 if (rq_data_dir(rq
) == READ
&&
1219 IDE_LARGE_SEEK(info
->last_block
, block
,
1220 IDECD_SEEK_THRESHOLD
) &&
1221 drive
->dsc_overlap
) {
1223 fn
= cdrom_start_seek_continuation
;
1226 info
->start_seek
= jiffies
;
1228 ide_cd_prepare_seek_request(drive
, rq
);
1231 fn
= cdrom_start_rw_cont
;
1233 if (cdrom_start_rw(drive
, rq
) == ide_stopped
)
1236 if (ide_cd_prepare_rw_request(drive
, rq
) == ide_stopped
)
1239 info
->last_block
= block
;
1240 } else if (blk_sense_request(rq
) || blk_pc_request(rq
) ||
1241 rq
->cmd_type
== REQ_TYPE_ATA_PC
) {
1242 xferlen
= rq
->data_len
;
1243 fn
= cdrom_do_newpc_cont
;
1246 rq
->timeout
= ATAPI_WAIT_PC
;
1248 cdrom_do_block_pc(drive
, rq
);
1249 } else if (blk_special_request(rq
)) {
1250 /* right now this can only be a reset... */
1251 cdrom_end_request(drive
, 1);
1254 blk_dump_rq_flags(rq
, "ide-cd bad flags");
1255 cdrom_end_request(drive
, 0);
1259 return cdrom_start_packet_command(drive
, xferlen
, fn
);
1265 * Routines which queue packet commands take as a final argument a pointer to a
1266 * request_sense struct. If execution of the command results in an error with a
1267 * CHECK CONDITION status, this structure will be filled with the results of the
1268 * subsequent request sense command. The pointer can also be NULL, in which case
1269 * no sense information is returned.
1271 static void msf_from_bcd(struct atapi_msf
*msf
)
1273 msf
->minute
= BCD2BIN(msf
->minute
);
1274 msf
->second
= BCD2BIN(msf
->second
);
1275 msf
->frame
= BCD2BIN(msf
->frame
);
1278 int cdrom_check_status(ide_drive_t
*drive
, struct request_sense
*sense
)
1280 struct cdrom_info
*info
= drive
->driver_data
;
1281 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1282 unsigned char cmd
[BLK_MAX_CDB
];
1284 memset(cmd
, 0, BLK_MAX_CDB
);
1285 cmd
[0] = GPCMD_TEST_UNIT_READY
;
1288 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1289 * instead of supporting the LOAD_UNLOAD opcode.
1291 cmd
[7] = cdi
->sanyo_slot
% 3;
1293 return ide_cd_queue_pc(drive
, cmd
, 0, NULL
, NULL
, sense
, 0, REQ_QUIET
);
1296 static int cdrom_read_capacity(ide_drive_t
*drive
, unsigned long *capacity
,
1297 unsigned long *sectors_per_frame
,
1298 struct request_sense
*sense
)
1306 unsigned char cmd
[BLK_MAX_CDB
];
1307 unsigned len
= sizeof(capbuf
);
1309 memset(cmd
, 0, BLK_MAX_CDB
);
1310 cmd
[0] = GPCMD_READ_CDVD_CAPACITY
;
1312 stat
= ide_cd_queue_pc(drive
, cmd
, 0, &capbuf
, &len
, sense
, 0,
1318 * Sanity check the given block size
1320 switch (capbuf
.blocklen
) {
1321 case __constant_cpu_to_be32(512):
1322 case __constant_cpu_to_be32(1024):
1323 case __constant_cpu_to_be32(2048):
1324 case __constant_cpu_to_be32(4096):
1327 printk(KERN_ERR
"%s: weird block size %u\n",
1328 drive
->name
, capbuf
.blocklen
);
1329 printk(KERN_ERR
"%s: default to 2kb block size\n",
1331 capbuf
.blocklen
= __constant_cpu_to_be32(2048);
1335 *capacity
= 1 + be32_to_cpu(capbuf
.lba
);
1336 *sectors_per_frame
= be32_to_cpu(capbuf
.blocklen
) >> SECTOR_BITS
;
1340 static int cdrom_read_tocentry(ide_drive_t
*drive
, int trackno
, int msf_flag
,
1341 int format
, char *buf
, int buflen
,
1342 struct request_sense
*sense
)
1344 unsigned char cmd
[BLK_MAX_CDB
];
1346 memset(cmd
, 0, BLK_MAX_CDB
);
1348 cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
1350 cmd
[7] = (buflen
>> 8);
1351 cmd
[8] = (buflen
& 0xff);
1352 cmd
[9] = (format
<< 6);
1357 return ide_cd_queue_pc(drive
, cmd
, 0, buf
, &buflen
, sense
, 0, REQ_QUIET
);
1360 /* Try to read the entire TOC for the disk into our internal buffer. */
1361 int ide_cd_read_toc(ide_drive_t
*drive
, struct request_sense
*sense
)
1363 int stat
, ntracks
, i
;
1364 struct cdrom_info
*info
= drive
->driver_data
;
1365 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1366 struct atapi_toc
*toc
= info
->toc
;
1368 struct atapi_toc_header hdr
;
1369 struct atapi_toc_entry ent
;
1372 unsigned long sectors_per_frame
= SECTORS_PER_FRAME
;
1375 /* try to allocate space */
1376 toc
= kmalloc(sizeof(struct atapi_toc
), GFP_KERNEL
);
1378 printk(KERN_ERR
"%s: No cdrom TOC buffer!\n",
1386 * Check to see if the existing data is still valid. If it is,
1389 (void) cdrom_check_status(drive
, sense
);
1391 if (drive
->atapi_flags
& IDE_AFLAG_TOC_VALID
)
1394 /* try to get the total cdrom capacity and sector size */
1395 stat
= cdrom_read_capacity(drive
, &toc
->capacity
, §ors_per_frame
,
1398 toc
->capacity
= 0x1fffff;
1400 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1401 /* save a private copy of the TOC capacity for error handling */
1402 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1404 blk_queue_hardsect_size(drive
->queue
,
1405 sectors_per_frame
<< SECTOR_BITS
);
1407 /* first read just the header, so we know how long the TOC is */
1408 stat
= cdrom_read_tocentry(drive
, 0, 1, 0, (char *) &toc
->hdr
,
1409 sizeof(struct atapi_toc_header
), sense
);
1413 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1414 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1415 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1418 ntracks
= toc
->hdr
.last_track
- toc
->hdr
.first_track
+ 1;
1421 if (ntracks
> MAX_TRACKS
)
1422 ntracks
= MAX_TRACKS
;
1424 /* now read the whole schmeer */
1425 stat
= cdrom_read_tocentry(drive
, toc
->hdr
.first_track
, 1, 0,
1427 sizeof(struct atapi_toc_header
) +
1429 sizeof(struct atapi_toc_entry
), sense
);
1431 if (stat
&& toc
->hdr
.first_track
> 1) {
1433 * Cds with CDI tracks only don't have any TOC entries, despite
1434 * of this the returned values are
1435 * first_track == last_track = number of CDI tracks + 1,
1436 * so that this case is indistinguishable from the same layout
1437 * plus an additional audio track. If we get an error for the
1438 * regular case, we assume a CDI without additional audio
1439 * tracks. In this case the readable TOC is empty (CDI tracks
1440 * are not included) and only holds the Leadout entry.
1445 stat
= cdrom_read_tocentry(drive
, CDROM_LEADOUT
, 1, 0,
1447 sizeof(struct atapi_toc_header
) +
1449 sizeof(struct atapi_toc_entry
),
1454 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1455 toc
->hdr
.first_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1456 toc
->hdr
.last_track
= (u8
)BIN2BCD(CDROM_LEADOUT
);
1458 toc
->hdr
.first_track
= CDROM_LEADOUT
;
1459 toc
->hdr
.last_track
= CDROM_LEADOUT
;
1466 toc
->hdr
.toc_length
= be16_to_cpu(toc
->hdr
.toc_length
);
1468 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
) {
1469 toc
->hdr
.first_track
= BCD2BIN(toc
->hdr
.first_track
);
1470 toc
->hdr
.last_track
= BCD2BIN(toc
->hdr
.last_track
);
1473 for (i
= 0; i
<= ntracks
; i
++) {
1474 if (drive
->atapi_flags
& IDE_AFLAG_TOCADDR_AS_BCD
) {
1475 if (drive
->atapi_flags
& IDE_AFLAG_TOCTRACKS_AS_BCD
)
1476 toc
->ent
[i
].track
= BCD2BIN(toc
->ent
[i
].track
);
1477 msf_from_bcd(&toc
->ent
[i
].addr
.msf
);
1479 toc
->ent
[i
].addr
.lba
= msf_to_lba(toc
->ent
[i
].addr
.msf
.minute
,
1480 toc
->ent
[i
].addr
.msf
.second
,
1481 toc
->ent
[i
].addr
.msf
.frame
);
1484 if (toc
->hdr
.first_track
!= CDROM_LEADOUT
) {
1485 /* read the multisession information */
1486 stat
= cdrom_read_tocentry(drive
, 0, 0, 1, (char *)&ms_tmp
,
1487 sizeof(ms_tmp
), sense
);
1491 toc
->last_session_lba
= be32_to_cpu(ms_tmp
.ent
.addr
.lba
);
1493 ms_tmp
.hdr
.last_track
= CDROM_LEADOUT
;
1494 ms_tmp
.hdr
.first_track
= ms_tmp
.hdr
.last_track
;
1495 toc
->last_session_lba
= msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1498 if (drive
->atapi_flags
& IDE_AFLAG_TOCADDR_AS_BCD
) {
1499 /* re-read multisession information using MSF format */
1500 stat
= cdrom_read_tocentry(drive
, 0, 1, 1, (char *)&ms_tmp
,
1501 sizeof(ms_tmp
), sense
);
1505 msf_from_bcd(&ms_tmp
.ent
.addr
.msf
);
1506 toc
->last_session_lba
= msf_to_lba(ms_tmp
.ent
.addr
.msf
.minute
,
1507 ms_tmp
.ent
.addr
.msf
.second
,
1508 ms_tmp
.ent
.addr
.msf
.frame
);
1511 toc
->xa_flag
= (ms_tmp
.hdr
.first_track
!= ms_tmp
.hdr
.last_track
);
1513 /* now try to get the total cdrom capacity */
1514 stat
= cdrom_get_last_written(cdi
, &last_written
);
1515 if (!stat
&& (last_written
> toc
->capacity
)) {
1516 toc
->capacity
= last_written
;
1517 set_capacity(info
->disk
, toc
->capacity
* sectors_per_frame
);
1518 drive
->probed_capacity
= toc
->capacity
* sectors_per_frame
;
1521 /* Remember that we've read this stuff. */
1522 drive
->atapi_flags
|= IDE_AFLAG_TOC_VALID
;
1527 int ide_cdrom_get_capabilities(ide_drive_t
*drive
, u8
*buf
)
1529 struct cdrom_info
*info
= drive
->driver_data
;
1530 struct cdrom_device_info
*cdi
= &info
->devinfo
;
1531 struct packet_command cgc
;
1532 int stat
, attempts
= 3, size
= ATAPI_CAPABILITIES_PAGE_SIZE
;
1534 if ((drive
->atapi_flags
& IDE_AFLAG_FULL_CAPS_PAGE
) == 0)
1535 size
-= ATAPI_CAPABILITIES_PAGE_PAD_SIZE
;
1537 init_cdrom_command(&cgc
, buf
, size
, CGC_DATA_UNKNOWN
);
1539 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1540 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CAPABILITIES_PAGE
, 0);
1543 } while (--attempts
);
1547 void ide_cdrom_update_speed(ide_drive_t
*drive
, u8
*buf
)
1549 struct cdrom_info
*cd
= drive
->driver_data
;
1550 u16 curspeed
, maxspeed
;
1552 if (drive
->atapi_flags
& IDE_AFLAG_LE_SPEED_FIELDS
) {
1553 curspeed
= le16_to_cpup((__le16
*)&buf
[8 + 14]);
1554 maxspeed
= le16_to_cpup((__le16
*)&buf
[8 + 8]);
1556 curspeed
= be16_to_cpup((__be16
*)&buf
[8 + 14]);
1557 maxspeed
= be16_to_cpup((__be16
*)&buf
[8 + 8]);
1560 cd
->current_speed
= (curspeed
+ (176/2)) / 176;
1561 cd
->max_speed
= (maxspeed
+ (176/2)) / 176;
1564 #define IDE_CD_CAPABILITIES \
1565 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1566 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1567 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1568 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1569 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1571 static struct cdrom_device_ops ide_cdrom_dops
= {
1572 .open
= ide_cdrom_open_real
,
1573 .release
= ide_cdrom_release_real
,
1574 .drive_status
= ide_cdrom_drive_status
,
1575 .media_changed
= ide_cdrom_check_media_change_real
,
1576 .tray_move
= ide_cdrom_tray_move
,
1577 .lock_door
= ide_cdrom_lock_door
,
1578 .select_speed
= ide_cdrom_select_speed
,
1579 .get_last_session
= ide_cdrom_get_last_session
,
1580 .get_mcn
= ide_cdrom_get_mcn
,
1581 .reset
= ide_cdrom_reset
,
1582 .audio_ioctl
= ide_cdrom_audio_ioctl
,
1583 .capability
= IDE_CD_CAPABILITIES
,
1584 .generic_packet
= ide_cdrom_packet
,
1587 static int ide_cdrom_register(ide_drive_t
*drive
, int nslots
)
1589 struct cdrom_info
*info
= drive
->driver_data
;
1590 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1592 devinfo
->ops
= &ide_cdrom_dops
;
1593 devinfo
->speed
= info
->current_speed
;
1594 devinfo
->capacity
= nslots
;
1595 devinfo
->handle
= drive
;
1596 strcpy(devinfo
->name
, drive
->name
);
1598 if (drive
->atapi_flags
& IDE_AFLAG_NO_SPEED_SELECT
)
1599 devinfo
->mask
|= CDC_SELECT_SPEED
;
1601 devinfo
->disk
= info
->disk
;
1602 return register_cdrom(devinfo
);
1605 static int ide_cdrom_probe_capabilities(ide_drive_t
*drive
)
1607 struct cdrom_info
*cd
= drive
->driver_data
;
1608 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1609 u8 buf
[ATAPI_CAPABILITIES_PAGE_SIZE
];
1610 mechtype_t mechtype
;
1613 cdi
->mask
= (CDC_CD_R
| CDC_CD_RW
| CDC_DVD
| CDC_DVD_R
|
1614 CDC_DVD_RAM
| CDC_SELECT_DISC
| CDC_PLAY_AUDIO
|
1615 CDC_MO_DRIVE
| CDC_RAM
);
1617 if (drive
->media
== ide_optical
) {
1618 cdi
->mask
&= ~(CDC_MO_DRIVE
| CDC_RAM
);
1619 printk(KERN_ERR
"%s: ATAPI magneto-optical drive\n",
1624 if (drive
->atapi_flags
& IDE_AFLAG_PRE_ATAPI12
) {
1625 drive
->atapi_flags
&= ~IDE_AFLAG_NO_EJECT
;
1626 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1631 * We have to cheat a little here. the packet will eventually be queued
1632 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1633 * Since this device hasn't been registered with the Uniform layer yet,
1634 * it can't do this. Same goes for cdi->ops.
1636 cdi
->handle
= drive
;
1637 cdi
->ops
= &ide_cdrom_dops
;
1639 if (ide_cdrom_get_capabilities(drive
, buf
))
1642 if ((buf
[8 + 6] & 0x01) == 0)
1643 drive
->atapi_flags
|= IDE_AFLAG_NO_DOORLOCK
;
1644 if (buf
[8 + 6] & 0x08)
1645 drive
->atapi_flags
&= ~IDE_AFLAG_NO_EJECT
;
1646 if (buf
[8 + 3] & 0x01)
1647 cdi
->mask
&= ~CDC_CD_R
;
1648 if (buf
[8 + 3] & 0x02)
1649 cdi
->mask
&= ~(CDC_CD_RW
| CDC_RAM
);
1650 if (buf
[8 + 2] & 0x38)
1651 cdi
->mask
&= ~CDC_DVD
;
1652 if (buf
[8 + 3] & 0x20)
1653 cdi
->mask
&= ~(CDC_DVD_RAM
| CDC_RAM
);
1654 if (buf
[8 + 3] & 0x10)
1655 cdi
->mask
&= ~CDC_DVD_R
;
1656 if ((buf
[8 + 4] & 0x01) || (drive
->atapi_flags
& IDE_AFLAG_PLAY_AUDIO_OK
))
1657 cdi
->mask
&= ~CDC_PLAY_AUDIO
;
1659 mechtype
= buf
[8 + 6] >> 5;
1660 if (mechtype
== mechtype_caddy
|| mechtype
== mechtype_popup
)
1661 cdi
->mask
|= CDC_CLOSE_TRAY
;
1663 if (cdi
->sanyo_slot
> 0) {
1664 cdi
->mask
&= ~CDC_SELECT_DISC
;
1666 } else if (mechtype
== mechtype_individual_changer
||
1667 mechtype
== mechtype_cartridge_changer
) {
1668 nslots
= cdrom_number_of_slots(cdi
);
1670 cdi
->mask
&= ~CDC_SELECT_DISC
;
1673 ide_cdrom_update_speed(drive
, buf
);
1675 printk(KERN_INFO
"%s: ATAPI", drive
->name
);
1677 /* don't print speed if the drive reported 0 */
1679 printk(KERN_CONT
" %dX", cd
->max_speed
);
1681 printk(KERN_CONT
" %s", (cdi
->mask
& CDC_DVD
) ? "CD-ROM" : "DVD-ROM");
1683 if ((cdi
->mask
& CDC_DVD_R
) == 0 || (cdi
->mask
& CDC_DVD_RAM
) == 0)
1684 printk(KERN_CONT
" DVD%s%s",
1685 (cdi
->mask
& CDC_DVD_R
) ? "" : "-R",
1686 (cdi
->mask
& CDC_DVD_RAM
) ? "" : "-RAM");
1688 if ((cdi
->mask
& CDC_CD_R
) == 0 || (cdi
->mask
& CDC_CD_RW
) == 0)
1689 printk(KERN_CONT
" CD%s%s",
1690 (cdi
->mask
& CDC_CD_R
) ? "" : "-R",
1691 (cdi
->mask
& CDC_CD_RW
) ? "" : "/RW");
1693 if ((cdi
->mask
& CDC_SELECT_DISC
) == 0)
1694 printk(KERN_CONT
" changer w/%d slots", nslots
);
1696 printk(KERN_CONT
" drive");
1698 printk(KERN_CONT
", %dkB Cache\n", be16_to_cpup((__be16
*)&buf
[8 + 12]));
1703 /* standard prep_rq_fn that builds 10 byte cmds */
1704 static int ide_cdrom_prep_fs(struct request_queue
*q
, struct request
*rq
)
1706 int hard_sect
= queue_hardsect_size(q
);
1707 long block
= (long)rq
->hard_sector
/ (hard_sect
>> 9);
1708 unsigned long blocks
= rq
->hard_nr_sectors
/ (hard_sect
>> 9);
1710 memset(rq
->cmd
, 0, BLK_MAX_CDB
);
1712 if (rq_data_dir(rq
) == READ
)
1713 rq
->cmd
[0] = GPCMD_READ_10
;
1715 rq
->cmd
[0] = GPCMD_WRITE_10
;
1720 rq
->cmd
[2] = (block
>> 24) & 0xff;
1721 rq
->cmd
[3] = (block
>> 16) & 0xff;
1722 rq
->cmd
[4] = (block
>> 8) & 0xff;
1723 rq
->cmd
[5] = block
& 0xff;
1726 * and transfer length
1728 rq
->cmd
[7] = (blocks
>> 8) & 0xff;
1729 rq
->cmd
[8] = blocks
& 0xff;
1735 * Most of the SCSI commands are supported directly by ATAPI devices.
1736 * This transform handles the few exceptions.
1738 static int ide_cdrom_prep_pc(struct request
*rq
)
1742 /* transform 6-byte read/write commands to the 10-byte version */
1743 if (c
[0] == READ_6
|| c
[0] == WRITE_6
) {
1750 c
[0] += (READ_10
- READ_6
);
1756 * it's silly to pretend we understand 6-byte sense commands, just
1757 * reject with ILLEGAL_REQUEST and the caller should take the
1758 * appropriate action
1760 if (c
[0] == MODE_SENSE
|| c
[0] == MODE_SELECT
) {
1761 rq
->errors
= ILLEGAL_REQUEST
;
1762 return BLKPREP_KILL
;
1768 static int ide_cdrom_prep_fn(struct request_queue
*q
, struct request
*rq
)
1770 if (blk_fs_request(rq
))
1771 return ide_cdrom_prep_fs(q
, rq
);
1772 else if (blk_pc_request(rq
))
1773 return ide_cdrom_prep_pc(rq
);
1778 struct cd_list_entry
{
1779 const char *id_model
;
1780 const char *id_firmware
;
1781 unsigned int cd_flags
;
1784 #ifdef CONFIG_IDE_PROC_FS
1785 static sector_t
ide_cdrom_capacity(ide_drive_t
*drive
)
1787 unsigned long capacity
, sectors_per_frame
;
1789 if (cdrom_read_capacity(drive
, &capacity
, §ors_per_frame
, NULL
))
1792 return capacity
* sectors_per_frame
;
1795 static int proc_idecd_read_capacity(char *page
, char **start
, off_t off
,
1796 int count
, int *eof
, void *data
)
1798 ide_drive_t
*drive
= data
;
1801 len
= sprintf(page
, "%llu\n", (long long)ide_cdrom_capacity(drive
));
1802 PROC_IDE_READ_RETURN(page
, start
, off
, count
, eof
, len
);
1805 static ide_proc_entry_t idecd_proc
[] = {
1806 { "capacity", S_IFREG
|S_IRUGO
, proc_idecd_read_capacity
, NULL
},
1807 { NULL
, 0, NULL
, NULL
}
1810 static void ide_cdrom_add_settings(ide_drive_t
*drive
)
1812 ide_add_setting(drive
, "dsc_overlap", SETTING_RW
, TYPE_BYTE
, 0, 1, 1, 1,
1813 &drive
->dsc_overlap
, NULL
);
1816 static inline void ide_cdrom_add_settings(ide_drive_t
*drive
) { ; }
1819 static const struct cd_list_entry ide_cd_quirks_list
[] = {
1820 /* Limit transfer size per interrupt. */
1821 { "SAMSUNG CD-ROM SCR-2430", NULL
, IDE_AFLAG_LIMIT_NFRAMES
},
1822 { "SAMSUNG CD-ROM SCR-2432", NULL
, IDE_AFLAG_LIMIT_NFRAMES
},
1823 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1824 { "SAMSUNG CD-ROM SCR-3231", NULL
, IDE_AFLAG_NO_SPEED_SELECT
},
1825 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1826 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD
|
1827 IDE_AFLAG_PRE_ATAPI12
, },
1828 /* Vertos 300, some versions of this drive like to talk BCD. */
1829 { "V003S0DS", NULL
, IDE_AFLAG_VERTOS_300_SSD
, },
1830 /* Vertos 600 ESD. */
1831 { "V006E0DS", NULL
, IDE_AFLAG_VERTOS_600_ESD
, },
1833 * Sanyo 3 CD changer uses a non-standard command for CD changing
1834 * (by default standard ATAPI support for CD changers is used).
1836 { "CD-ROM CDR-C3 G", NULL
, IDE_AFLAG_SANYO_3CD
},
1837 { "CD-ROM CDR-C3G", NULL
, IDE_AFLAG_SANYO_3CD
},
1838 { "CD-ROM CDR_C36", NULL
, IDE_AFLAG_SANYO_3CD
},
1839 /* Stingray 8X CD-ROM. */
1840 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL
, IDE_AFLAG_PRE_ATAPI12
},
1842 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1843 * mode sense page capabilities size, but older drives break.
1845 { "ATAPI CD ROM DRIVE 50X MAX", NULL
, IDE_AFLAG_FULL_CAPS_PAGE
},
1846 { "WPI CDS-32X", NULL
, IDE_AFLAG_FULL_CAPS_PAGE
},
1847 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1848 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS
},
1850 * Some drives used by Apple don't advertise audio play
1851 * but they do support reading TOC & audio datas.
1853 { "MATSHITADVD-ROM SR-8187", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1854 { "MATSHITADVD-ROM SR-8186", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1855 { "MATSHITADVD-ROM SR-8176", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1856 { "MATSHITADVD-ROM SR-8174", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1857 { "Optiarc DVD RW AD-5200A", NULL
, IDE_AFLAG_PLAY_AUDIO_OK
},
1861 static unsigned int ide_cd_flags(struct hd_driveid
*id
)
1863 const struct cd_list_entry
*cle
= ide_cd_quirks_list
;
1865 while (cle
->id_model
) {
1866 if (strcmp(cle
->id_model
, id
->model
) == 0 &&
1867 (cle
->id_firmware
== NULL
||
1868 strstr(id
->fw_rev
, cle
->id_firmware
)))
1869 return cle
->cd_flags
;
1876 static int ide_cdrom_setup(ide_drive_t
*drive
)
1878 struct cdrom_info
*cd
= drive
->driver_data
;
1879 struct cdrom_device_info
*cdi
= &cd
->devinfo
;
1880 struct hd_driveid
*id
= drive
->id
;
1883 blk_queue_prep_rq(drive
->queue
, ide_cdrom_prep_fn
);
1884 blk_queue_dma_alignment(drive
->queue
, 31);
1885 blk_queue_update_dma_pad(drive
->queue
, 15);
1886 drive
->queue
->unplug_delay
= (1 * HZ
) / 1000;
1887 if (!drive
->queue
->unplug_delay
)
1888 drive
->queue
->unplug_delay
= 1;
1890 drive
->special
.all
= 0;
1892 drive
->atapi_flags
= IDE_AFLAG_MEDIA_CHANGED
| IDE_AFLAG_NO_EJECT
|
1895 if ((id
->config
& 0x0060) == 0x20)
1896 drive
->atapi_flags
|= IDE_AFLAG_DRQ_INTERRUPT
;
1898 if ((drive
->atapi_flags
& IDE_AFLAG_VERTOS_300_SSD
) &&
1899 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
1900 drive
->atapi_flags
|= (IDE_AFLAG_TOCTRACKS_AS_BCD
|
1901 IDE_AFLAG_TOCADDR_AS_BCD
);
1902 else if ((drive
->atapi_flags
& IDE_AFLAG_VERTOS_600_ESD
) &&
1903 id
->fw_rev
[4] == '1' && id
->fw_rev
[6] <= '2')
1904 drive
->atapi_flags
|= IDE_AFLAG_TOCTRACKS_AS_BCD
;
1905 else if (drive
->atapi_flags
& IDE_AFLAG_SANYO_3CD
)
1906 /* 3 => use CD in slot 0 */
1907 cdi
->sanyo_slot
= 3;
1909 nslots
= ide_cdrom_probe_capabilities(drive
);
1911 /* set correct block size */
1912 blk_queue_hardsect_size(drive
->queue
, CD_FRAMESIZE
);
1914 drive
->dsc_overlap
= (drive
->next
!= drive
);
1916 if (ide_cdrom_register(drive
, nslots
)) {
1917 printk(KERN_ERR
"%s: %s failed to register device with the"
1918 " cdrom driver.\n", drive
->name
, __func__
);
1919 cd
->devinfo
.handle
= NULL
;
1922 ide_cdrom_add_settings(drive
);
1926 static void ide_cd_remove(ide_drive_t
*drive
)
1928 struct cdrom_info
*info
= drive
->driver_data
;
1930 ide_proc_unregister_driver(drive
, info
->driver
);
1932 del_gendisk(info
->disk
);
1937 static void ide_cd_release(struct kref
*kref
)
1939 struct cdrom_info
*info
= to_ide_cd(kref
);
1940 struct cdrom_device_info
*devinfo
= &info
->devinfo
;
1941 ide_drive_t
*drive
= info
->drive
;
1942 struct gendisk
*g
= info
->disk
;
1945 if (devinfo
->handle
== drive
)
1946 unregister_cdrom(devinfo
);
1947 drive
->dsc_overlap
= 0;
1948 drive
->driver_data
= NULL
;
1949 blk_queue_prep_rq(drive
->queue
, NULL
);
1950 g
->private_data
= NULL
;
1955 static int ide_cd_probe(ide_drive_t
*);
1957 static ide_driver_t ide_cdrom_driver
= {
1959 .owner
= THIS_MODULE
,
1960 .name
= "ide-cdrom",
1961 .bus
= &ide_bus_type
,
1963 .probe
= ide_cd_probe
,
1964 .remove
= ide_cd_remove
,
1965 .version
= IDECD_VERSION
,
1967 .supports_dsc_overlap
= 1,
1968 .do_request
= ide_cd_do_request
,
1969 .end_request
= ide_end_request
,
1970 .error
= __ide_error
,
1971 #ifdef CONFIG_IDE_PROC_FS
1976 static int idecd_open(struct inode
*inode
, struct file
*file
)
1978 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1979 struct cdrom_info
*info
;
1982 info
= ide_cd_get(disk
);
1986 rc
= cdrom_open(&info
->devinfo
, inode
, file
);
1994 static int idecd_release(struct inode
*inode
, struct file
*file
)
1996 struct gendisk
*disk
= inode
->i_bdev
->bd_disk
;
1997 struct cdrom_info
*info
= ide_cd_g(disk
);
1999 cdrom_release(&info
->devinfo
, file
);
2006 static int idecd_set_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2008 struct packet_command cgc
;
2013 if (copy_from_user(&spindown
, (void __user
*)arg
, sizeof(char)))
2016 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2018 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2022 buffer
[11] = (buffer
[11] & 0xf0) | (spindown
& 0x0f);
2023 return cdrom_mode_select(cdi
, &cgc
);
2026 static int idecd_get_spindown(struct cdrom_device_info
*cdi
, unsigned long arg
)
2028 struct packet_command cgc
;
2033 init_cdrom_command(&cgc
, buffer
, sizeof(buffer
), CGC_DATA_UNKNOWN
);
2035 stat
= cdrom_mode_sense(cdi
, &cgc
, GPMODE_CDROM_PAGE
, 0);
2039 spindown
= buffer
[11] & 0x0f;
2040 if (copy_to_user((void __user
*)arg
, &spindown
, sizeof(char)))
2045 static int idecd_ioctl(struct inode
*inode
, struct file
*file
,
2046 unsigned int cmd
, unsigned long arg
)
2048 struct block_device
*bdev
= inode
->i_bdev
;
2049 struct cdrom_info
*info
= ide_cd_g(bdev
->bd_disk
);
2053 case CDROMSETSPINDOWN
:
2054 return idecd_set_spindown(&info
->devinfo
, arg
);
2055 case CDROMGETSPINDOWN
:
2056 return idecd_get_spindown(&info
->devinfo
, arg
);
2061 err
= generic_ide_ioctl(info
->drive
, file
, bdev
, cmd
, arg
);
2063 err
= cdrom_ioctl(file
, &info
->devinfo
, inode
, cmd
, arg
);
2068 static int idecd_media_changed(struct gendisk
*disk
)
2070 struct cdrom_info
*info
= ide_cd_g(disk
);
2071 return cdrom_media_changed(&info
->devinfo
);
2074 static int idecd_revalidate_disk(struct gendisk
*disk
)
2076 struct cdrom_info
*info
= ide_cd_g(disk
);
2077 struct request_sense sense
;
2079 ide_cd_read_toc(info
->drive
, &sense
);
2084 static struct block_device_operations idecd_ops
= {
2085 .owner
= THIS_MODULE
,
2087 .release
= idecd_release
,
2088 .ioctl
= idecd_ioctl
,
2089 .media_changed
= idecd_media_changed
,
2090 .revalidate_disk
= idecd_revalidate_disk
2093 /* module options */
2094 static char *ignore
;
2096 module_param(ignore
, charp
, 0400);
2097 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2099 static int ide_cd_probe(ide_drive_t
*drive
)
2101 struct cdrom_info
*info
;
2103 struct request_sense sense
;
2105 if (!strstr("ide-cdrom", drive
->driver_req
))
2107 if (!drive
->present
)
2109 if (drive
->media
!= ide_cdrom
&& drive
->media
!= ide_optical
)
2111 /* skip drives that we were told to ignore */
2112 if (ignore
!= NULL
) {
2113 if (strstr(ignore
, drive
->name
)) {
2114 printk(KERN_INFO
"ide-cd: ignoring drive %s\n",
2119 info
= kzalloc(sizeof(struct cdrom_info
), GFP_KERNEL
);
2121 printk(KERN_ERR
"%s: Can't allocate a cdrom structure\n",
2126 g
= alloc_disk(1 << PARTN_BITS
);
2130 ide_init_disk(g
, drive
);
2132 ide_proc_register_driver(drive
, &ide_cdrom_driver
);
2134 kref_init(&info
->kref
);
2136 info
->drive
= drive
;
2137 info
->driver
= &ide_cdrom_driver
;
2140 g
->private_data
= &info
->driver
;
2142 drive
->driver_data
= info
;
2145 g
->driverfs_dev
= &drive
->gendev
;
2146 g
->flags
= GENHD_FL_CD
| GENHD_FL_REMOVABLE
;
2147 if (ide_cdrom_setup(drive
)) {
2148 ide_proc_unregister_driver(drive
, &ide_cdrom_driver
);
2149 ide_cd_release(&info
->kref
);
2153 ide_cd_read_toc(drive
, &sense
);
2154 g
->fops
= &idecd_ops
;
2155 g
->flags
|= GENHD_FL_REMOVABLE
;
2165 static void __exit
ide_cdrom_exit(void)
2167 driver_unregister(&ide_cdrom_driver
.gen_driver
);
2170 static int __init
ide_cdrom_init(void)
2172 return driver_register(&ide_cdrom_driver
.gen_driver
);
2175 MODULE_ALIAS("ide:*m-cdrom*");
2176 MODULE_ALIAS("ide-cd");
2177 module_init(ide_cdrom_init
);
2178 module_exit(ide_cdrom_exit
);
2179 MODULE_LICENSE("GPL");