2 * linux/drivers/ide/ide-cd.c
4 * Copyright (C) 1994, 1995, 1996 scott snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
8 * May be copied or modified under the terms of the GNU General Public
9 * License. See linux/COPYING for more information.
11 * ATAPI CD-ROM driver. To be used with ide.c.
12 * See Documentation/cdrom/ide-cd for usage information.
14 * Suggestions are welcome. Patches that work are more welcome though. ;-)
15 * For those wishing to work on this driver, please be sure you download
16 * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI
17 * (SFF-8020i rev 2.6) standards. These documents can be obtained by
19 * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps
20 * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf
22 * Drives that deviate from these standards will be accommodated as much
23 * as possible via compile time or command-line options. Since I only have
24 * a few drives, you generally need to send me patches...
26 * ----------------------------------
28 * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on
31 * For historical changelog please see:
32 * Documentation/ide/ChangeLog.ide-cd.1994-2004
35 #define IDECD_VERSION "4.61"
37 #include <linux/module.h>
38 #include <linux/types.h>
39 #include <linux/kernel.h>
40 #include <linux/delay.h>
41 #include <linux/timer.h>
42 #include <linux/slab.h>
43 #include <linux/interrupt.h>
44 #include <linux/errno.h>
45 #include <linux/cdrom.h>
46 #include <linux/ide.h>
47 #include <linux/completion.h>
48 #include <linux/mutex.h>
49 #include <linux/bcd.h>
51 #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */
55 #include <asm/byteorder.h>
56 #include <asm/uaccess.h>
57 #include <asm/unaligned.h>
61 static DEFINE_MUTEX(idecd_ref_mutex);
63 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
65 #define ide_cd_g(disk) \
66 container_of((disk)->private_data, struct cdrom_info, driver)
68 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
70 struct cdrom_info *cd = NULL;
72 mutex_lock(&idecd_ref_mutex);
76 mutex_unlock(&idecd_ref_mutex);
80 static void ide_cd_release(struct kref *);
82 static void ide_cd_put(struct cdrom_info *cd)
84 mutex_lock(&idecd_ref_mutex);
85 kref_put(&cd->kref, ide_cd_release);
86 mutex_unlock(&idecd_ref_mutex);
89 /****************************************************************************
90 * Generic packet command support and error handling routines.
93 /* Mark that we've seen a media change, and invalidate our internal
95 static void cdrom_saw_media_change (ide_drive_t *drive)
97 struct cdrom_info *cd = drive->driver_data;
99 cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED;
100 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
101 cd->nsectors_buffered = 0;
104 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
105 struct request_sense *sense)
109 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
112 switch (sense->sense_key) {
113 case NO_SENSE: case RECOVERED_ERROR:
117 * don't care about tray state messages for
118 * e.g. capacity commands or in-progress or
121 if (sense->asc == 0x3a || sense->asc == 0x04)
125 case ILLEGAL_REQUEST:
127 * don't log START_STOP unit with LoEj set, since
128 * we cannot reliably check if drive can auto-close
130 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
136 * Make good and sure we've seen this potential media
137 * change. Some drives (i.e. Creative) fail to present
138 * the correct sense key in the error register.
140 cdrom_saw_media_change(drive);
150 void cdrom_analyze_sense_data(ide_drive_t *drive,
151 struct request *failed_command,
152 struct request_sense *sense)
154 unsigned long sector;
155 unsigned long bio_sectors;
157 struct cdrom_info *info = drive->driver_data;
159 if (!cdrom_log_sense(drive, failed_command, sense))
163 * If a read toc is executed for a CD-R or CD-RW medium where
164 * the first toc has not been recorded yet, it will fail with
165 * 05/24/00 (which is a confusing error)
167 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
168 if (sense->sense_key == 0x05 && sense->asc == 0x24)
171 if (sense->error_code == 0x70) { /* Current Error */
172 switch(sense->sense_key) {
174 case VOLUME_OVERFLOW:
175 case ILLEGAL_REQUEST:
178 if (failed_command == NULL ||
179 !blk_fs_request(failed_command))
181 sector = (sense->information[0] << 24) |
182 (sense->information[1] << 16) |
183 (sense->information[2] << 8) |
184 (sense->information[3]);
186 bio_sectors = bio_sectors(failed_command->bio);
189 if (drive->queue->hardsect_size == 2048)
190 sector <<= 2; /* Device sector size is 2K */
191 sector &= ~(bio_sectors -1);
192 valid = (sector - failed_command->sector) << 9;
196 if (sector < get_capacity(info->disk) &&
197 drive->probed_capacity - sector < 4 * 75) {
198 set_capacity(info->disk, sector);
203 ide_cd_log_error(drive->name, failed_command, sense);
207 * Initialize a ide-cd packet command request
209 void ide_cd_init_rq(ide_drive_t *drive, struct request *rq)
211 struct cdrom_info *cd = drive->driver_data;
213 ide_init_drive_cmd(rq);
214 rq->cmd_type = REQ_TYPE_ATA_PC;
215 rq->rq_disk = cd->disk;
218 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
219 struct request *failed_command)
221 struct cdrom_info *info = drive->driver_data;
222 struct request *rq = &info->request_sense_request;
225 sense = &info->sense_data;
227 /* stuff the sense request in front of our current request */
228 ide_cd_init_rq(drive, rq);
231 rq->cmd[0] = GPCMD_REQUEST_SENSE;
232 rq->cmd[4] = rq->data_len = 18;
234 rq->cmd_type = REQ_TYPE_SENSE;
236 /* NOTE! Save the failed command in "rq->buffer" */
237 rq->buffer = (void *) failed_command;
239 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
242 static void cdrom_end_request (ide_drive_t *drive, int uptodate)
244 struct request *rq = HWGROUP(drive)->rq;
245 int nsectors = rq->hard_cur_sectors;
247 if (blk_sense_request(rq) && uptodate) {
249 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
252 struct request *failed = (struct request *) rq->buffer;
253 struct cdrom_info *info = drive->driver_data;
254 void *sense = &info->sense_data;
259 sense = failed->sense;
260 failed->sense_len = rq->sense_len;
262 cdrom_analyze_sense_data(drive, failed, sense);
264 * now end failed request
266 if (blk_fs_request(failed)) {
267 if (ide_end_dequeued_request(drive, failed, 0,
268 failed->hard_nr_sectors))
271 spin_lock_irqsave(&ide_lock, flags);
272 if (__blk_end_request(failed, -EIO,
275 spin_unlock_irqrestore(&ide_lock, flags);
278 cdrom_analyze_sense_data(drive, NULL, sense);
281 if (!rq->current_nr_sectors && blk_fs_request(rq))
283 /* make sure it's fully ended */
284 if (blk_pc_request(rq))
285 nsectors = (rq->data_len + 511) >> 9;
289 ide_end_request(drive, uptodate, nsectors);
292 static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat)
296 ide_dump_status(drive, msg, stat);
299 /* Returns 0 if the request should be continued.
300 Returns 1 if the request was ended. */
301 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
303 struct request *rq = HWGROUP(drive)->rq;
304 int stat, err, sense_key;
306 /* Check for errors. */
307 stat = HWIF(drive)->INB(IDE_STATUS_REG);
311 if (OK_STAT(stat, good_stat, BAD_R_STAT))
314 /* Get the IDE error register. */
315 err = HWIF(drive)->INB(IDE_ERROR_REG);
316 sense_key = err >> 4;
319 printk("%s: missing rq in cdrom_decode_status\n", drive->name);
323 if (blk_sense_request(rq)) {
324 /* We got an error trying to get sense info
325 from the drive (probably while trying
326 to recover from a former error). Just give up. */
328 rq->cmd_flags |= REQ_FAILED;
329 cdrom_end_request(drive, 0);
330 ide_error(drive, "request sense failure", stat);
333 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
334 /* All other functions, except for READ. */
338 * if we have an error, pass back CHECK_CONDITION as the
341 if (blk_pc_request(rq) && !rq->errors)
342 rq->errors = SAM_STAT_CHECK_CONDITION;
344 /* Check for tray open. */
345 if (sense_key == NOT_READY) {
346 cdrom_saw_media_change (drive);
347 } else if (sense_key == UNIT_ATTENTION) {
348 /* Check for media change. */
349 cdrom_saw_media_change (drive);
350 /*printk("%s: media changed\n",drive->name);*/
352 } else if ((sense_key == ILLEGAL_REQUEST) &&
353 (rq->cmd[0] == GPCMD_START_STOP_UNIT)) {
355 * Don't print error message for this condition--
356 * SFF8090i indicates that 5/24/00 is the correct
357 * response to a request to close the tray if the
358 * drive doesn't have that capability.
359 * cdrom_log_sense() knows this!
361 } else if (!(rq->cmd_flags & REQ_QUIET)) {
362 /* Otherwise, print an error. */
363 ide_dump_status(drive, "packet command error", stat);
366 rq->cmd_flags |= REQ_FAILED;
369 * instead of playing games with moving completions around,
370 * remove failed request completely and end it when the
371 * request sense has completed
373 if (stat & ERR_STAT) {
374 spin_lock_irqsave(&ide_lock, flags);
375 blkdev_dequeue_request(rq);
376 HWGROUP(drive)->rq = NULL;
377 spin_unlock_irqrestore(&ide_lock, flags);
379 cdrom_queue_request_sense(drive, rq->sense, rq);
381 cdrom_end_request(drive, 0);
383 } else if (blk_fs_request(rq)) {
384 int do_end_request = 0;
386 /* Handle errors from READ and WRITE requests. */
388 if (blk_noretry_request(rq))
391 if (sense_key == NOT_READY) {
393 if (rq_data_dir(rq) == READ) {
394 cdrom_saw_media_change (drive);
396 /* Fail the request. */
397 printk ("%s: tray open\n", drive->name);
400 struct cdrom_info *info = drive->driver_data;
402 /* allow the drive 5 seconds to recover, some
403 * devices will return this error while flushing
406 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
408 if (time_after(jiffies, info->write_timeout))
414 * take a breather relying on the
415 * unplug timer to kick us again
417 spin_lock_irqsave(&ide_lock, flags);
418 blk_plug_device(drive->queue);
419 spin_unlock_irqrestore(&ide_lock,flags);
423 } else if (sense_key == UNIT_ATTENTION) {
425 cdrom_saw_media_change (drive);
427 /* Arrange to retry the request.
428 But be sure to give up if we've retried
430 if (++rq->errors > ERROR_MAX)
432 } else if (sense_key == ILLEGAL_REQUEST ||
433 sense_key == DATA_PROTECT) {
434 /* No point in retrying after an illegal
435 request or data protect error.*/
436 ide_dump_status_no_sense (drive, "command error", stat);
438 } else if (sense_key == MEDIUM_ERROR) {
439 /* No point in re-trying a zillion times on a bad
440 * sector... If we got here the error is not correctable */
441 ide_dump_status_no_sense (drive, "media error (bad sector)", stat);
443 } else if (sense_key == BLANK_CHECK) {
444 /* Disk appears blank ?? */
445 ide_dump_status_no_sense (drive, "media error (blank)", stat);
447 } else if ((err & ~ABRT_ERR) != 0) {
448 /* Go to the default handler
450 ide_error(drive, "cdrom_decode_status", stat);
452 } else if ((++rq->errors > ERROR_MAX)) {
453 /* We've racked up too many retries. Abort. */
457 /* End a request through request sense analysis when we have
458 sense data. We need this in order to perform end of media
461 if (do_end_request) {
462 if (stat & ERR_STAT) {
464 spin_lock_irqsave(&ide_lock, flags);
465 blkdev_dequeue_request(rq);
466 HWGROUP(drive)->rq = NULL;
467 spin_unlock_irqrestore(&ide_lock, flags);
469 cdrom_queue_request_sense(drive, rq->sense, rq);
471 cdrom_end_request(drive, 0);
473 /* If we got a CHECK_CONDITION status,
474 queue a request sense command. */
476 cdrom_queue_request_sense(drive, NULL, NULL);
479 blk_dump_rq_flags(rq, "ide-cd: bad rq");
480 cdrom_end_request(drive, 0);
483 /* Retry, or handle the next request. */
487 static int cdrom_timer_expiry(ide_drive_t *drive)
489 struct request *rq = HWGROUP(drive)->rq;
490 unsigned long wait = 0;
493 * Some commands are *slow* and normally take a long time to
494 * complete. Usually we can use the ATAPI "disconnect" to bypass
495 * this, but not all commands/drives support that. Let
496 * ide_timer_expiry keep polling us for these.
498 switch (rq->cmd[0]) {
500 case GPCMD_FORMAT_UNIT:
501 case GPCMD_RESERVE_RZONE_TRACK:
502 case GPCMD_CLOSE_TRACK:
503 case GPCMD_FLUSH_CACHE:
504 wait = ATAPI_WAIT_PC;
507 if (!(rq->cmd_flags & REQ_QUIET))
508 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]);
515 /* Set up the device registers for transferring a packet command on DEV,
516 expecting to later transfer XFERLEN bytes. HANDLER is the routine
517 which actually transfers the command to the drive. If this is a
518 drq_interrupt device, this routine will arrange for HANDLER to be
519 called when the interrupt from the drive arrives. Otherwise, HANDLER
520 will be called immediately after the drive is prepared for the transfer. */
522 static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
524 ide_handler_t *handler)
526 ide_startstop_t startstop;
527 struct cdrom_info *info = drive->driver_data;
528 ide_hwif_t *hwif = drive->hwif;
530 /* Wait for the controller to be idle. */
531 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
534 /* FIXME: for Virtual DMA we must check harder */
536 info->dma = !hwif->dma_setup(drive);
538 /* Set up the controller registers. */
539 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL |
540 IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma);
542 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
543 /* waiting for CDB interrupt, not DMA yet. */
545 drive->waiting_for_dma = 0;
548 ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry);
554 spin_lock_irqsave(&ide_lock, flags);
555 hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG);
557 spin_unlock_irqrestore(&ide_lock, flags);
559 return (*handler) (drive);
563 /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
564 The device registers must have already been prepared
565 by cdrom_start_packet_command.
566 HANDLER is the interrupt handler to call when the command completes
567 or there's data ready. */
568 #define ATAPI_MIN_CDB_BYTES 12
569 static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive,
571 ide_handler_t *handler)
573 ide_hwif_t *hwif = drive->hwif;
575 struct cdrom_info *info = drive->driver_data;
576 ide_startstop_t startstop;
578 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
579 /* Here we should have been called after receiving an interrupt
580 from the device. DRQ should how be set. */
582 /* Check for errors. */
583 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
586 /* Ok, next interrupt will be DMA interrupt. */
588 drive->waiting_for_dma = 1;
590 /* Otherwise, we must wait for DRQ to get set. */
591 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
592 BUSY_STAT, WAIT_READY))
596 /* Arm the interrupt handler. */
597 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
599 /* ATAPI commands get padded out to 12 bytes minimum */
600 cmd_len = COMMAND_SIZE(rq->cmd[0]);
601 if (cmd_len < ATAPI_MIN_CDB_BYTES)
602 cmd_len = ATAPI_MIN_CDB_BYTES;
604 /* Send the command to the device. */
605 HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len);
607 /* Start the DMA if need be */
609 hwif->dma_start(drive);
614 /****************************************************************************
615 * Block read functions.
618 typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
620 static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
624 xf(drive, &dum, sizeof(dum));
630 * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
631 * buffer. Once the first sector is added, any subsequent sectors are
632 * assumed to be continuous (until the buffer is cleared). For the first
633 * sector added, SECTOR is its sector number. (SECTOR is then ignored until
634 * the buffer is cleared.)
636 static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
637 int sectors_to_transfer)
639 struct cdrom_info *info = drive->driver_data;
641 /* Number of sectors to read into the buffer. */
642 int sectors_to_buffer = min_t(int, sectors_to_transfer,
643 (SECTOR_BUFFER_SIZE >> SECTOR_BITS) -
644 info->nsectors_buffered);
648 /* If we couldn't get a buffer, don't try to buffer anything... */
649 if (info->buffer == NULL)
650 sectors_to_buffer = 0;
652 /* If this is the first sector in the buffer, remember its number. */
653 if (info->nsectors_buffered == 0)
654 info->sector_buffered = sector;
656 /* Read the data into the buffer. */
657 dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE;
658 while (sectors_to_buffer > 0) {
659 HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE);
661 --sectors_to_transfer;
662 ++info->nsectors_buffered;
666 /* Throw away any remaining data. */
667 while (sectors_to_transfer > 0) {
668 static char dum[SECTOR_SIZE];
669 HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum));
670 --sectors_to_transfer;
675 * Check the contents of the interrupt reason register from the cdrom
676 * and attempt to recover if there are problems. Returns 0 if everything's
677 * ok; nonzero if the request has been terminated.
680 int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason)
684 else if (ireason == 0) {
685 ide_hwif_t *hwif = drive->hwif;
687 /* Whoops... The drive is expecting to receive data from us! */
688 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
689 drive->name, __FUNCTION__);
691 /* Throw some data at the drive so it doesn't hang
692 and quit this request. */
693 ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len);
694 } else if (ireason == 1) {
695 /* Some drives (ASUS) seem to tell us that status
696 * info is available. just get it and ignore.
698 (void) HWIF(drive)->INB(IDE_STATUS_REG);
701 /* Drive wants a command packet, or invalid ireason... */
702 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
703 drive->name, __FUNCTION__, ireason);
706 cdrom_end_request(drive, 0);
711 * Interrupt routine. Called when a read request has completed.
713 static ide_startstop_t cdrom_read_intr (ide_drive_t *drive)
716 int ireason, len, sectors_to_transfer, nskip;
717 struct cdrom_info *info = drive->driver_data;
718 u8 lowcyl = 0, highcyl = 0;
719 int dma = info->dma, dma_error = 0;
721 struct request *rq = HWGROUP(drive)->rq;
728 dma_error = HWIF(drive)->ide_dma_end(drive);
730 printk(KERN_ERR "%s: DMA read error\n", drive->name);
735 if (cdrom_decode_status(drive, 0, &stat))
740 ide_end_request(drive, 1, rq->nr_sectors);
743 return ide_error(drive, "dma error", stat);
746 /* Read the interrupt reason and the transfer length. */
747 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
748 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
749 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
751 len = lowcyl + (256 * highcyl);
753 /* If DRQ is clear, the command has completed. */
754 if ((stat & DRQ_STAT) == 0) {
755 /* If we're not done filling the current buffer, complain.
756 Otherwise, complete the command normally. */
757 if (rq->current_nr_sectors > 0) {
758 printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n",
759 drive->name, rq->current_nr_sectors);
760 rq->cmd_flags |= REQ_FAILED;
761 cdrom_end_request(drive, 0);
763 cdrom_end_request(drive, 1);
767 /* Check that the drive is expecting to do the same thing we are. */
768 if (cdrom_read_check_ireason (drive, len, ireason))
771 /* Assume that the drive will always provide data in multiples
772 of at least SECTOR_SIZE, as it gets hairy to keep track
773 of the transfers otherwise. */
774 if ((len % SECTOR_SIZE) != 0) {
775 printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n",
777 if (info->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
778 printk (KERN_ERR " This drive is not supported by this version of the driver\n");
780 printk (KERN_ERR " Trying to limit transfer sizes\n");
781 info->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
783 cdrom_end_request(drive, 0);
787 /* The number of sectors we need to read from the drive. */
788 sectors_to_transfer = len / SECTOR_SIZE;
790 /* First, figure out if we need to bit-bucket
791 any of the leading sectors. */
792 nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer);
795 /* We need to throw away a sector. */
796 static char dum[SECTOR_SIZE];
797 HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum));
799 --rq->current_nr_sectors;
801 --sectors_to_transfer;
804 /* Now loop while we still have data to read from the drive. */
805 while (sectors_to_transfer > 0) {
808 /* If we've filled the present buffer but there's another
809 chained buffer after it, move on. */
810 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
811 cdrom_end_request(drive, 1);
813 /* If the buffers are full, cache the rest of the data in our
815 if (rq->current_nr_sectors == 0) {
816 cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer);
817 sectors_to_transfer = 0;
819 /* Transfer data to the buffers.
820 Figure out how many sectors we can transfer
821 to the current buffer. */
822 this_transfer = min_t(int, sectors_to_transfer,
823 rq->current_nr_sectors);
825 /* Read this_transfer sectors
826 into the current buffer. */
827 while (this_transfer > 0) {
828 HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE);
829 rq->buffer += SECTOR_SIZE;
831 --rq->current_nr_sectors;
834 --sectors_to_transfer;
839 /* Done moving data! Wait for another interrupt. */
840 ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL);
845 * Try to satisfy some of the current read request from our cached data.
846 * Returns nonzero if the request has been completed, zero otherwise.
848 static int cdrom_read_from_buffer (ide_drive_t *drive)
850 struct cdrom_info *info = drive->driver_data;
851 struct request *rq = HWGROUP(drive)->rq;
852 unsigned short sectors_per_frame;
854 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
856 /* Can't do anything if there's no buffer. */
857 if (info->buffer == NULL) return 0;
859 /* Loop while this request needs data and the next block is present
861 while (rq->nr_sectors > 0 &&
862 rq->sector >= info->sector_buffered &&
863 rq->sector < info->sector_buffered + info->nsectors_buffered) {
864 if (rq->current_nr_sectors == 0)
865 cdrom_end_request(drive, 1);
869 (rq->sector - info->sector_buffered) * SECTOR_SIZE,
871 rq->buffer += SECTOR_SIZE;
872 --rq->current_nr_sectors;
877 /* If we've satisfied the current request,
878 terminate it successfully. */
879 if (rq->nr_sectors == 0) {
880 cdrom_end_request(drive, 1);
884 /* Move on to the next buffer if needed. */
885 if (rq->current_nr_sectors == 0)
886 cdrom_end_request(drive, 1);
888 /* If this condition does not hold, then the kluge i use to
889 represent the number of sectors to skip at the start of a transfer
890 will fail. I think that this will never happen, but let's be
891 paranoid and check. */
892 if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) &&
893 (rq->sector & (sectors_per_frame - 1))) {
894 printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
895 drive->name, (long)rq->sector);
896 cdrom_end_request(drive, 0);
904 * Routine to send a read packet command to the drive.
905 * This is usually called directly from cdrom_start_read.
906 * However, for drq_interrupt devices, it is called from an interrupt
907 * when the drive is ready to accept the command.
909 static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive)
911 struct request *rq = HWGROUP(drive)->rq;
912 unsigned short sectors_per_frame;
915 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
917 /* If the requested sector doesn't start on a cdrom block boundary,
918 we must adjust the start of the transfer so that it does,
919 and remember to skip the first few sectors.
920 If the CURRENT_NR_SECTORS field is larger than the size
921 of the buffer, it will mean that we're to skip a number
922 of sectors equal to the amount by which CURRENT_NR_SECTORS
923 is larger than the buffer size. */
924 nskip = rq->sector & (sectors_per_frame - 1);
926 /* Sanity check... */
927 if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) &&
928 (rq->sector & (sectors_per_frame - 1))) {
929 printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n",
930 drive->name, rq->current_nr_sectors);
931 cdrom_end_request(drive, 0);
934 rq->current_nr_sectors += nskip;
937 /* Set up the command */
938 rq->timeout = ATAPI_WAIT_PC;
940 /* Send the command to the drive and return. */
941 return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr);
945 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
946 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
947 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
949 static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive)
951 struct cdrom_info *info = drive->driver_data;
953 static int retry = 10;
955 if (cdrom_decode_status(drive, 0, &stat))
958 info->cd_flags |= IDE_CD_FLAG_SEEKING;
960 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
963 * this condition is far too common, to bother
966 /* printk("%s: disabled DSC seek overlap\n", drive->name);*/
967 drive->dsc_overlap = 0;
973 static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive)
975 struct request *rq = HWGROUP(drive)->rq;
976 sector_t frame = rq->sector;
978 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
980 memset(rq->cmd, 0, sizeof(rq->cmd));
981 rq->cmd[0] = GPCMD_SEEK;
982 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
984 rq->timeout = ATAPI_WAIT_PC;
985 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
988 static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block)
990 struct cdrom_info *info = drive->driver_data;
993 info->start_seek = jiffies;
994 return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation);
997 /* Fix up a possibly partially-processed request so that we can
998 start it over entirely, or even put it back on the request queue. */
999 static void restore_request (struct request *rq)
1001 if (rq->buffer != bio_data(rq->bio)) {
1002 sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE;
1004 rq->buffer = bio_data(rq->bio);
1005 rq->nr_sectors += n;
1008 rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio);
1009 rq->hard_nr_sectors = rq->nr_sectors;
1010 rq->hard_sector = rq->sector;
1011 rq->q->prep_rq_fn(rq->q, rq);
1015 * Start a read request from the CD-ROM.
1017 static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block)
1019 struct cdrom_info *info = drive->driver_data;
1020 struct request *rq = HWGROUP(drive)->rq;
1021 unsigned short sectors_per_frame;
1023 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1025 /* We may be retrying this request after an error. Fix up
1026 any weirdness which might be present in the request packet. */
1027 restore_request(rq);
1029 /* Satisfy whatever we can of this request from our cached sector. */
1030 if (cdrom_read_from_buffer(drive))
1033 /* Clear the local sector buffer. */
1034 info->nsectors_buffered = 0;
1036 /* use dma, if possible. */
1037 info->dma = drive->using_dma;
1038 if ((rq->sector & (sectors_per_frame - 1)) ||
1039 (rq->nr_sectors & (sectors_per_frame - 1)))
1042 /* Start sending the read request to the drive. */
1043 return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation);
1046 /****************************************************************************
1047 * Execute all other packet commands.
1050 static void ide_cd_request_sense_fixup(struct request *rq)
1053 * Some of the trailing request sense fields are optional,
1054 * and some drives don't send them. Sigh.
1056 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
1057 rq->data_len > 0 && rq->data_len <= 5)
1058 while (rq->data_len > 0) {
1059 *(u8 *)rq->data++ = 0;
1064 int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq)
1066 struct request_sense sense;
1068 unsigned int flags = rq->cmd_flags;
1070 if (rq->sense == NULL)
1073 /* Start of retry loop. */
1076 unsigned long time = jiffies;
1077 rq->cmd_flags = flags;
1079 error = ide_do_drive_cmd(drive, rq, ide_wait);
1080 time = jiffies - time;
1082 /* FIXME: we should probably abort/retry or something
1083 * in case of failure */
1084 if (rq->cmd_flags & REQ_FAILED) {
1085 /* The request failed. Retry if it was due to a unit
1087 (usually means media was changed). */
1088 struct request_sense *reqbuf = rq->sense;
1090 if (reqbuf->sense_key == UNIT_ATTENTION)
1091 cdrom_saw_media_change(drive);
1092 else if (reqbuf->sense_key == NOT_READY &&
1093 reqbuf->asc == 4 && reqbuf->ascq != 4) {
1094 /* The drive is in the process of loading
1095 a disk. Retry, but wait a little to give
1096 the drive time to complete the load. */
1099 /* Otherwise, don't retry. */
1105 /* End of retry loop. */
1106 } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
1108 /* Return an error if the command failed. */
1109 return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
1115 static int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason)
1117 /* Two notes about IDE interrupt reason here - 0 means that
1118 * the drive wants to receive data from us, 2 means that
1119 * the drive is expecting to transfer data to us.
1123 else if (ireason == 2) {
1124 ide_hwif_t *hwif = drive->hwif;
1126 /* Whoops... The drive wants to send data. */
1127 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
1128 drive->name, __FUNCTION__);
1130 ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len);
1132 /* Drive wants a command packet, or invalid ireason... */
1133 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
1134 drive->name, __FUNCTION__, ireason);
1137 cdrom_end_request(drive, 0);
1142 * Called from blk_end_request_callback() after the data of the request
1143 * is completed and before the request is completed.
1144 * By returning value '1', blk_end_request_callback() returns immediately
1145 * without completing the request.
1147 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
1153 * best way to deal with dma that is not sector aligned right now... note
1154 * that in this path we are not using ->data or ->buffer at all. this irs
1155 * can replace cdrom_read_intr() and cdrom_write_intr() in the future.
1157 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
1159 struct cdrom_info *info = drive->driver_data;
1160 struct request *rq = HWGROUP(drive)->rq;
1161 xfer_func_t *xferfunc;
1162 ide_expiry_t *expiry;
1163 int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;
1164 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
1165 unsigned int timeout;
1168 /* Check for errors. */
1172 dma_error = HWIF(drive)->ide_dma_end(drive);
1174 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
1175 write ? "write" : "read");
1180 if (cdrom_decode_status(drive, 0, &stat))
1184 * using dma, transfer is complete now
1188 return ide_error(drive, "dma error", stat);
1193 * ok we fall to pio :/
1195 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
1196 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1197 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1199 len = lowcyl + (256 * highcyl);
1200 thislen = rq->data_len;
1205 * If DRQ is clear, the command has completed.
1207 if ((stat & DRQ_STAT) == 0) {
1208 if (!blk_pc_request(rq)) {
1209 ide_cd_request_sense_fixup(rq);
1210 /* Complain if we still have data left to transfer. */
1211 uptodate = rq->data_len ? 0 : 1;
1217 * check which way to transfer data
1219 if (blk_pc_request(rq) && rq_data_dir(rq) == WRITE) {
1223 if (cdrom_write_check_ireason(drive, len, ireason))
1225 } else if (blk_pc_request(rq)) {
1229 if (cdrom_read_check_ireason(drive, len, ireason))
1235 xferfunc = HWIF(drive)->atapi_output_bytes;
1236 } else if (ireason == 2 || (ireason == 1 && blk_pc_request(rq))) {
1238 xferfunc = HWIF(drive)->atapi_input_bytes;
1240 printk(KERN_ERR "%s: %s: The drive "
1241 "appears confused (ireason = 0x%02x). "
1242 "Trying to recover by ending request.\n",
1243 drive->name, __FUNCTION__, ireason);
1250 while (thislen > 0) {
1251 int blen = blen = rq->data_len;
1252 char *ptr = rq->data;
1258 ptr = bio_data(rq->bio);
1259 blen = bio_iovec(rq->bio)->bv_len;
1263 printk(KERN_ERR "%s: confused, missing data\n",
1265 blk_dump_rq_flags(rq, rq_data_dir(rq)
1266 ? "cdrom_newpc_intr, write"
1267 : "cdrom_newpc_intr, read");
1274 xferfunc(drive, ptr, blen);
1278 rq->data_len -= blen;
1282 * The request can't be completed until DRQ is cleared.
1283 * So complete the data, but don't complete the request
1284 * using the dummy function for the callback feature
1285 * of blk_end_request_callback().
1287 blk_end_request_callback(rq, 0, blen,
1288 cdrom_newpc_intr_dummy_cb);
1293 if (write && blk_sense_request(rq))
1294 rq->sense_len += thislen;
1300 ide_cd_pad_transfer(drive, xferfunc, len);
1302 if (blk_pc_request(rq)) {
1303 timeout = rq->timeout;
1306 timeout = ATAPI_WAIT_PC;
1307 expiry = cdrom_timer_expiry;
1310 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
1314 if (blk_pc_request(rq)) {
1315 unsigned long flags;
1317 spin_lock_irqsave(&ide_lock, flags);
1318 if (__blk_end_request(rq, 0, rq->data_len))
1320 HWGROUP(drive)->rq = NULL;
1321 spin_unlock_irqrestore(&ide_lock, flags);
1324 rq->cmd_flags |= REQ_FAILED;
1325 cdrom_end_request(drive, uptodate);
1330 static ide_startstop_t cdrom_write_intr(ide_drive_t *drive)
1332 int stat, ireason, len, sectors_to_transfer, uptodate;
1333 struct cdrom_info *info = drive->driver_data;
1334 int dma_error = 0, dma = info->dma;
1335 u8 lowcyl = 0, highcyl = 0;
1337 struct request *rq = HWGROUP(drive)->rq;
1339 /* Check for errors. */
1342 dma_error = HWIF(drive)->ide_dma_end(drive);
1344 printk(KERN_ERR "%s: DMA write error\n", drive->name);
1349 if (cdrom_decode_status(drive, 0, &stat))
1353 * using dma, transfer is complete now
1357 return ide_error(drive, "dma error", stat);
1359 ide_end_request(drive, 1, rq->nr_sectors);
1363 /* Read the interrupt reason and the transfer length. */
1364 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
1365 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1366 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1368 len = lowcyl + (256 * highcyl);
1370 /* If DRQ is clear, the command has completed. */
1371 if ((stat & DRQ_STAT) == 0) {
1372 /* If we're not done writing, complain.
1373 * Otherwise, complete the command normally.
1376 if (rq->current_nr_sectors > 0) {
1377 printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n",
1378 drive->name, __FUNCTION__,
1379 rq->current_nr_sectors);
1382 cdrom_end_request(drive, uptodate);
1386 /* Check that the drive is expecting to do the same thing we are. */
1387 if (cdrom_write_check_ireason(drive, len, ireason))
1390 sectors_to_transfer = len / SECTOR_SIZE;
1393 * now loop and write out the data
1395 while (sectors_to_transfer > 0) {
1398 if (!rq->current_nr_sectors) {
1399 printk(KERN_ERR "%s: %s: confused, missing data\n",
1400 drive->name, __FUNCTION__);
1405 * Figure out how many sectors we can transfer
1407 this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors);
1409 while (this_transfer > 0) {
1410 HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE);
1411 rq->buffer += SECTOR_SIZE;
1413 --rq->current_nr_sectors;
1416 --sectors_to_transfer;
1420 * current buffer complete, move on
1422 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1423 cdrom_end_request(drive, 1);
1426 /* re-arm handler */
1427 ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL);
1431 static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive)
1433 struct request *rq = HWGROUP(drive)->rq;
1435 #if 0 /* the immediate bit */
1436 rq->cmd[1] = 1 << 3;
1438 rq->timeout = ATAPI_WAIT_PC;
1440 return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr);
1443 static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq)
1445 struct cdrom_info *info = drive->driver_data;
1446 struct gendisk *g = info->disk;
1447 unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1450 * writes *must* be hardware frame aligned
1452 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1453 (rq->sector & (sectors_per_frame - 1))) {
1454 cdrom_end_request(drive, 0);
1459 * disk has become write protected
1462 cdrom_end_request(drive, 0);
1466 info->nsectors_buffered = 0;
1468 /* use dma, if possible. we don't need to check more, since we
1469 * know that the transfer is always (at least!) frame aligned */
1470 info->dma = drive->using_dma ? 1 : 0;
1472 info->devinfo.media_written = 1;
1474 /* Start sending the write request to the drive. */
1475 return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont);
1478 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1480 struct request *rq = HWGROUP(drive)->rq;
1483 rq->timeout = ATAPI_WAIT_PC;
1485 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1488 static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1490 struct cdrom_info *info = drive->driver_data;
1492 if (blk_pc_request(rq))
1493 rq->cmd_flags |= REQ_QUIET;
1495 rq->cmd_flags &= ~REQ_FAILED;
1503 int mask = drive->queue->dma_alignment;
1504 unsigned long addr = (unsigned long) page_address(bio_page(rq->bio));
1506 info->dma = drive->using_dma;
1509 * check if dma is safe
1511 * NOTE! The "len" and "addr" checks should possibly have
1514 if ((rq->data_len & 15) || (addr & mask))
1518 /* Start sending the command to the drive. */
1519 return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont);
1522 /****************************************************************************
1523 * cdrom driver request routine.
1525 static ide_startstop_t
1526 ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block)
1528 ide_startstop_t action;
1529 struct cdrom_info *info = drive->driver_data;
1531 if (blk_fs_request(rq)) {
1532 if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
1533 unsigned long elapsed = jiffies - info->start_seek;
1534 int stat = HWIF(drive)->INB(IDE_STATUS_REG);
1536 if ((stat & SEEK_STAT) != SEEK_STAT) {
1537 if (elapsed < IDECD_SEEK_TIMEOUT) {
1538 ide_stall_queue(drive, IDECD_SEEK_TIMER);
1541 printk (KERN_ERR "%s: DSC timeout\n", drive->name);
1543 info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
1545 if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) {
1546 action = cdrom_start_seek(drive, block);
1548 if (rq_data_dir(rq) == READ)
1549 action = cdrom_start_read(drive, block);
1551 action = cdrom_start_write(drive, rq);
1553 info->last_block = block;
1555 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
1556 rq->cmd_type == REQ_TYPE_ATA_PC) {
1557 return cdrom_do_block_pc(drive, rq);
1558 } else if (blk_special_request(rq)) {
1560 * right now this can only be a reset...
1562 cdrom_end_request(drive, 1);
1566 blk_dump_rq_flags(rq, "ide-cd bad flags");
1567 cdrom_end_request(drive, 0);
1573 /****************************************************************************
1576 * Routines which queue packet commands take as a final argument a pointer
1577 * to a request_sense struct. If execution of the command results
1578 * in an error with a CHECK CONDITION status, this structure will be filled
1579 * with the results of the subsequent request sense command. The pointer
1580 * can also be NULL, in which case no sense information is returned.
1584 void msf_from_bcd (struct atapi_msf *msf)
1586 msf->minute = BCD2BIN(msf->minute);
1587 msf->second = BCD2BIN(msf->second);
1588 msf->frame = BCD2BIN(msf->frame);
1591 static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1594 struct cdrom_info *info = drive->driver_data;
1595 struct cdrom_device_info *cdi = &info->devinfo;
1597 ide_cd_init_rq(drive, &req);
1600 req.cmd[0] = GPCMD_TEST_UNIT_READY;
1601 req.cmd_flags |= REQ_QUIET;
1604 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
1605 * switch CDs instead of supporting the LOAD_UNLOAD opcode.
1607 req.cmd[7] = cdi->sanyo_slot % 3;
1609 return ide_cd_queue_pc(drive, &req);
1612 /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
1613 int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
1614 struct request_sense *sense)
1616 struct cdrom_info *cd = drive->driver_data;
1617 struct request_sense my_sense;
1624 /* If the drive cannot lock the door, just pretend. */
1625 if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) {
1628 ide_cd_init_rq(drive, &req);
1630 req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
1631 req.cmd[4] = lockflag ? 1 : 0;
1632 stat = ide_cd_queue_pc(drive, &req);
1635 /* If we got an illegal field error, the drive
1636 probably cannot lock the door. */
1638 sense->sense_key == ILLEGAL_REQUEST &&
1639 (sense->asc == 0x24 || sense->asc == 0x20)) {
1640 printk (KERN_ERR "%s: door locking not supported\n",
1642 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
1646 /* no medium, that's alright. */
1647 if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
1652 cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED;
1654 cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED;
1661 /* Eject the disk if EJECTFLAG is 0.
1662 If EJECTFLAG is 1, try to reload the disk. */
1663 static int cdrom_eject(ide_drive_t *drive, int ejectflag,
1664 struct request_sense *sense)
1666 struct cdrom_info *cd = drive->driver_data;
1667 struct cdrom_device_info *cdi = &cd->devinfo;
1671 if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag)
1672 return -EDRIVE_CANT_DO_THIS;
1674 /* reload fails on some drives, if the tray is locked */
1675 if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag)
1678 ide_cd_init_rq(drive, &req);
1680 /* only tell drive to close tray if open, if it can do that */
1681 if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
1685 req.cmd[0] = GPCMD_START_STOP_UNIT;
1686 req.cmd[4] = loej | (ejectflag != 0);
1688 return ide_cd_queue_pc(drive, &req);
1691 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1692 unsigned long *sectors_per_frame,
1693 struct request_sense *sense)
1703 ide_cd_init_rq(drive, &req);
1706 req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1707 req.data = (char *)&capbuf;
1708 req.data_len = sizeof(capbuf);
1709 req.cmd_flags |= REQ_QUIET;
1711 stat = ide_cd_queue_pc(drive, &req);
1713 *capacity = 1 + be32_to_cpu(capbuf.lba);
1714 *sectors_per_frame =
1715 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1721 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1722 int format, char *buf, int buflen,
1723 struct request_sense *sense)
1727 ide_cd_init_rq(drive, &req);
1731 req.data_len = buflen;
1732 req.cmd_flags |= REQ_QUIET;
1733 req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1734 req.cmd[6] = trackno;
1735 req.cmd[7] = (buflen >> 8);
1736 req.cmd[8] = (buflen & 0xff);
1737 req.cmd[9] = (format << 6);
1742 return ide_cd_queue_pc(drive, &req);
1745 /* Try to read the entire TOC for the disk into our internal buffer. */
1746 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1748 int stat, ntracks, i;
1749 struct cdrom_info *info = drive->driver_data;
1750 struct cdrom_device_info *cdi = &info->devinfo;
1751 struct atapi_toc *toc = info->toc;
1753 struct atapi_toc_header hdr;
1754 struct atapi_toc_entry ent;
1757 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1760 /* Try to allocate space. */
1761 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1763 printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name);
1769 /* Check to see if the existing data is still valid.
1770 If it is, just return. */
1771 (void) cdrom_check_status(drive, sense);
1773 if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
1776 /* Try to get the total cdrom capacity and sector size. */
1777 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1780 toc->capacity = 0x1fffff;
1782 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1783 /* Save a private copy of te TOC capacity for error handling */
1784 drive->probed_capacity = toc->capacity * sectors_per_frame;
1786 blk_queue_hardsect_size(drive->queue,
1787 sectors_per_frame << SECTOR_BITS);
1789 /* First read just the header, so we know how long the TOC is. */
1790 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1791 sizeof(struct atapi_toc_header), sense);
1795 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1796 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1797 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1800 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1803 if (ntracks > MAX_TRACKS)
1804 ntracks = MAX_TRACKS;
1806 /* Now read the whole schmeer. */
1807 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1809 sizeof(struct atapi_toc_header) +
1811 sizeof(struct atapi_toc_entry), sense);
1813 if (stat && toc->hdr.first_track > 1) {
1814 /* Cds with CDI tracks only don't have any TOC entries,
1815 despite of this the returned values are
1816 first_track == last_track = number of CDI tracks + 1,
1817 so that this case is indistinguishable from the same
1818 layout plus an additional audio track.
1819 If we get an error for the regular case, we assume
1820 a CDI without additional audio tracks. In this case
1821 the readable TOC is empty (CDI tracks are not included)
1822 and only holds the Leadout entry. Heiko Eißfeldt */
1824 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1826 sizeof(struct atapi_toc_header) +
1828 sizeof(struct atapi_toc_entry),
1833 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1834 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1835 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
1837 toc->hdr.first_track = CDROM_LEADOUT;
1838 toc->hdr.last_track = CDROM_LEADOUT;
1845 toc->hdr.toc_length = ntohs (toc->hdr.toc_length);
1847 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1848 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1849 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1852 for (i = 0; i <= ntracks; i++) {
1853 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1854 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
1855 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
1856 msf_from_bcd(&toc->ent[i].addr.msf);
1858 toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute,
1859 toc->ent[i].addr.msf.second,
1860 toc->ent[i].addr.msf.frame);
1863 /* Read the multisession information. */
1864 if (toc->hdr.first_track != CDROM_LEADOUT) {
1865 /* Read the multisession information. */
1866 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1867 sizeof(ms_tmp), sense);
1871 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1873 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT;
1874 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1877 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1878 /* Re-read multisession information using MSF format */
1879 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1880 sizeof(ms_tmp), sense);
1884 msf_from_bcd (&ms_tmp.ent.addr.msf);
1885 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1886 ms_tmp.ent.addr.msf.second,
1887 ms_tmp.ent.addr.msf.frame);
1890 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1892 /* Now try to get the total cdrom capacity. */
1893 stat = cdrom_get_last_written(cdi, &last_written);
1894 if (!stat && (last_written > toc->capacity)) {
1895 toc->capacity = last_written;
1896 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1897 drive->probed_capacity = toc->capacity * sectors_per_frame;
1900 /* Remember that we've read this stuff. */
1901 info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
1906 /* the generic packet interface to cdrom.c */
1907 static int ide_cdrom_packet(struct cdrom_device_info *cdi,
1908 struct packet_command *cgc)
1911 ide_drive_t *drive = cdi->handle;
1913 if (cgc->timeout <= 0)
1914 cgc->timeout = ATAPI_WAIT_PC;
1916 /* here we queue the commands from the uniform CD-ROM
1917 layer. the packet must be complete, as we do not
1919 ide_cd_init_rq(drive, &req);
1920 memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE);
1922 memset(cgc->sense, 0, sizeof(struct request_sense));
1923 req.data = cgc->buffer;
1924 req.data_len = cgc->buflen;
1925 req.timeout = cgc->timeout;
1928 req.cmd_flags |= REQ_QUIET;
1930 req.sense = cgc->sense;
1931 cgc->stat = ide_cd_queue_pc(drive, &req);
1933 cgc->buflen -= req.data_len;
1938 int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position)
1940 ide_drive_t *drive = cdi->handle;
1941 struct request_sense sense;
1944 int stat = ide_cd_lockdoor(drive, 0, &sense);
1950 return cdrom_eject(drive, !position, &sense);
1953 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1955 struct cdrom_info *info = drive->driver_data;
1956 struct cdrom_device_info *cdi = &info->devinfo;
1957 struct packet_command cgc;
1958 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1960 if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
1961 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1963 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1964 do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
1965 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1968 } while (--attempts);
1972 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1974 struct cdrom_info *cd = drive->driver_data;
1975 u16 curspeed, maxspeed;
1977 curspeed = *(u16 *)&buf[8 + 14];
1978 maxspeed = *(u16 *)&buf[8 + 8];
1980 if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
1981 curspeed = le16_to_cpu(curspeed);
1982 maxspeed = le16_to_cpu(maxspeed);
1984 curspeed = be16_to_cpu(curspeed);
1985 maxspeed = be16_to_cpu(maxspeed);
1988 cd->current_speed = (curspeed + (176/2)) / 176;
1989 cd->max_speed = (maxspeed + (176/2)) / 176;
1993 * add logic to try GET_EVENT command first to check for media and tray
1994 * status. this should be supported by newer cd-r/w and all DVD etc
1998 int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr)
2000 ide_drive_t *drive = cdi->handle;
2001 struct media_event_desc med;
2002 struct request_sense sense;
2005 if (slot_nr != CDSL_CURRENT)
2008 stat = cdrom_check_status(drive, &sense);
2009 if (!stat || sense.sense_key == UNIT_ATTENTION)
2012 if (!cdrom_get_media_event(cdi, &med)) {
2013 if (med.media_present)
2015 else if (med.door_open)
2016 return CDS_TRAY_OPEN;
2021 if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04)
2025 * If not using Mt Fuji extended media tray reports,
2026 * just return TRAY_OPEN since ATAPI doesn't provide
2027 * any other way to detect this...
2029 if (sense.sense_key == NOT_READY) {
2030 if (sense.asc == 0x3a && sense.ascq == 1)
2033 return CDS_TRAY_OPEN;
2035 return CDS_DRIVE_NOT_READY;
2038 /****************************************************************************
2039 * Other driver requests (open, close, check media change).
2043 int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi,
2046 ide_drive_t *drive = cdi->handle;
2047 struct cdrom_info *cd = drive->driver_data;
2050 if (slot_nr == CDSL_CURRENT) {
2051 (void) cdrom_check_status(drive, NULL);
2052 retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0;
2053 cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED;
2062 int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose)
2068 * Close down the device. Invalidate all cached blocks.
2072 void ide_cdrom_release_real (struct cdrom_device_info *cdi)
2074 ide_drive_t *drive = cdi->handle;
2075 struct cdrom_info *cd = drive->driver_data;
2077 if (!cdi->use_count)
2078 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
2081 #define IDE_CD_CAPABILITIES \
2082 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
2083 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
2084 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
2085 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
2086 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
2088 static struct cdrom_device_ops ide_cdrom_dops = {
2089 .open = ide_cdrom_open_real,
2090 .release = ide_cdrom_release_real,
2091 .drive_status = ide_cdrom_drive_status,
2092 .media_changed = ide_cdrom_check_media_change_real,
2093 .tray_move = ide_cdrom_tray_move,
2094 .lock_door = ide_cdrom_lock_door,
2095 .select_speed = ide_cdrom_select_speed,
2096 .get_last_session = ide_cdrom_get_last_session,
2097 .get_mcn = ide_cdrom_get_mcn,
2098 .reset = ide_cdrom_reset,
2099 .audio_ioctl = ide_cdrom_audio_ioctl,
2100 .capability = IDE_CD_CAPABILITIES,
2101 .generic_packet = ide_cdrom_packet,
2104 static int ide_cdrom_register (ide_drive_t *drive, int nslots)
2106 struct cdrom_info *info = drive->driver_data;
2107 struct cdrom_device_info *devinfo = &info->devinfo;
2109 devinfo->ops = &ide_cdrom_dops;
2110 devinfo->speed = info->current_speed;
2111 devinfo->capacity = nslots;
2112 devinfo->handle = drive;
2113 strcpy(devinfo->name, drive->name);
2115 if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
2116 devinfo->mask |= CDC_SELECT_SPEED;
2118 devinfo->disk = info->disk;
2119 return register_cdrom(devinfo);
2123 int ide_cdrom_probe_capabilities (ide_drive_t *drive)
2125 struct cdrom_info *cd = drive->driver_data;
2126 struct cdrom_device_info *cdi = &cd->devinfo;
2127 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
2128 mechtype_t mechtype;
2131 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
2132 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
2133 CDC_MO_DRIVE | CDC_RAM);
2135 if (drive->media == ide_optical) {
2136 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
2137 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name);
2141 if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
2142 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
2143 cdi->mask &= ~CDC_PLAY_AUDIO;
2148 * we have to cheat a little here. the packet will eventually
2149 * be queued with ide_cdrom_packet(), which extracts the
2150 * drive from cdi->handle. Since this device hasn't been
2151 * registered with the Uniform layer yet, it can't do this.
2152 * Same goes for cdi->ops.
2154 cdi->handle = drive;
2155 cdi->ops = &ide_cdrom_dops;
2157 if (ide_cdrom_get_capabilities(drive, buf))
2160 if ((buf[8 + 6] & 0x01) == 0)
2161 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
2162 if (buf[8 + 6] & 0x08)
2163 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
2164 if (buf[8 + 3] & 0x01)
2165 cdi->mask &= ~CDC_CD_R;
2166 if (buf[8 + 3] & 0x02)
2167 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
2168 if (buf[8 + 2] & 0x38)
2169 cdi->mask &= ~CDC_DVD;
2170 if (buf[8 + 3] & 0x20)
2171 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
2172 if (buf[8 + 3] & 0x10)
2173 cdi->mask &= ~CDC_DVD_R;
2174 if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
2175 cdi->mask &= ~CDC_PLAY_AUDIO;
2177 mechtype = buf[8 + 6] >> 5;
2178 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
2179 cdi->mask |= CDC_CLOSE_TRAY;
2181 if (cdi->sanyo_slot > 0) {
2182 cdi->mask &= ~CDC_SELECT_DISC;
2184 } else if (mechtype == mechtype_individual_changer ||
2185 mechtype == mechtype_cartridge_changer) {
2186 nslots = cdrom_number_of_slots(cdi);
2188 cdi->mask &= ~CDC_SELECT_DISC;
2191 ide_cdrom_update_speed(drive, buf);
2193 printk(KERN_INFO "%s: ATAPI", drive->name);
2195 /* don't print speed if the drive reported 0 */
2197 printk(KERN_CONT " %dX", cd->max_speed);
2199 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
2201 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
2202 printk(KERN_CONT " DVD%s%s",
2203 (cdi->mask & CDC_DVD_R) ? "" : "-R",
2204 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
2206 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
2207 printk(KERN_CONT " CD%s%s",
2208 (cdi->mask & CDC_CD_R) ? "" : "-R",
2209 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
2211 if ((cdi->mask & CDC_SELECT_DISC) == 0)
2212 printk(KERN_CONT " changer w/%d slots", nslots);
2214 printk(KERN_CONT " drive");
2216 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
2221 #ifdef CONFIG_IDE_PROC_FS
2222 static void ide_cdrom_add_settings(ide_drive_t *drive)
2224 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
2227 static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
2231 * standard prep_rq_fn that builds 10 byte cmds
2233 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
2235 int hard_sect = queue_hardsect_size(q);
2236 long block = (long)rq->hard_sector / (hard_sect >> 9);
2237 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
2239 memset(rq->cmd, 0, sizeof(rq->cmd));
2241 if (rq_data_dir(rq) == READ)
2242 rq->cmd[0] = GPCMD_READ_10;
2244 rq->cmd[0] = GPCMD_WRITE_10;
2249 rq->cmd[2] = (block >> 24) & 0xff;
2250 rq->cmd[3] = (block >> 16) & 0xff;
2251 rq->cmd[4] = (block >> 8) & 0xff;
2252 rq->cmd[5] = block & 0xff;
2255 * and transfer length
2257 rq->cmd[7] = (blocks >> 8) & 0xff;
2258 rq->cmd[8] = blocks & 0xff;
2264 * Most of the SCSI commands are supported directly by ATAPI devices.
2265 * This transform handles the few exceptions.
2267 static int ide_cdrom_prep_pc(struct request *rq)
2272 * Transform 6-byte read/write commands to the 10-byte version
2274 if (c[0] == READ_6 || c[0] == WRITE_6) {
2281 c[0] += (READ_10 - READ_6);
2287 * it's silly to pretend we understand 6-byte sense commands, just
2288 * reject with ILLEGAL_REQUEST and the caller should take the
2289 * appropriate action
2291 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
2292 rq->errors = ILLEGAL_REQUEST;
2293 return BLKPREP_KILL;
2299 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
2301 if (blk_fs_request(rq))
2302 return ide_cdrom_prep_fs(q, rq);
2303 else if (blk_pc_request(rq))
2304 return ide_cdrom_prep_pc(rq);
2309 struct cd_list_entry {
2310 const char *id_model;
2311 const char *id_firmware;
2312 unsigned int cd_flags;
2315 static const struct cd_list_entry ide_cd_quirks_list[] = {
2316 /* Limit transfer size per interrupt. */
2317 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
2318 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
2319 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
2320 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT },
2321 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
2322 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
2323 IDE_CD_FLAG_PRE_ATAPI12, },
2324 /* Vertos 300, some versions of this drive like to talk BCD. */
2325 { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, },
2326 /* Vertos 600 ESD. */
2327 { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, },
2329 * Sanyo 3 CD changer uses a non-standard command for CD changing
2330 * (by default standard ATAPI support for CD changers is used).
2332 { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD },
2333 { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD },
2334 { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD },
2335 /* Stingray 8X CD-ROM. */
2336 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
2338 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
2339 * mode sense page capabilities size, but older drives break.
2341 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
2342 { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
2343 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
2344 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS },
2346 * Some drives used by Apple don't advertise audio play
2347 * but they do support reading TOC & audio datas.
2349 { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2350 { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2351 { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2352 { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2356 static unsigned int ide_cd_flags(struct hd_driveid *id)
2358 const struct cd_list_entry *cle = ide_cd_quirks_list;
2360 while (cle->id_model) {
2361 if (strcmp(cle->id_model, id->model) == 0 &&
2362 (cle->id_firmware == NULL ||
2363 strstr(id->fw_rev, cle->id_firmware)))
2364 return cle->cd_flags;
2372 int ide_cdrom_setup (ide_drive_t *drive)
2374 struct cdrom_info *cd = drive->driver_data;
2375 struct cdrom_device_info *cdi = &cd->devinfo;
2376 struct hd_driveid *id = drive->id;
2379 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
2380 blk_queue_dma_alignment(drive->queue, 31);
2381 drive->queue->unplug_delay = (1 * HZ) / 1000;
2382 if (!drive->queue->unplug_delay)
2383 drive->queue->unplug_delay = 1;
2385 drive->special.all = 0;
2387 cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
2390 if ((id->config & 0x0060) == 0x20)
2391 cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
2393 if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
2394 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
2395 cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
2396 IDE_CD_FLAG_TOCADDR_AS_BCD);
2397 else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
2398 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
2399 cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
2400 else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
2401 cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */
2403 nslots = ide_cdrom_probe_capabilities (drive);
2406 * set correct block size
2408 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
2410 if (drive->autotune == IDE_TUNE_DEFAULT ||
2411 drive->autotune == IDE_TUNE_AUTO)
2412 drive->dsc_overlap = (drive->next != drive);
2414 if (ide_cdrom_register(drive, nslots)) {
2415 printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name);
2416 cd->devinfo.handle = NULL;
2419 ide_cdrom_add_settings(drive);
2423 #ifdef CONFIG_IDE_PROC_FS
2425 sector_t ide_cdrom_capacity (ide_drive_t *drive)
2427 unsigned long capacity, sectors_per_frame;
2429 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
2432 return capacity * sectors_per_frame;
2436 static void ide_cd_remove(ide_drive_t *drive)
2438 struct cdrom_info *info = drive->driver_data;
2440 ide_proc_unregister_driver(drive, info->driver);
2442 del_gendisk(info->disk);
2447 static void ide_cd_release(struct kref *kref)
2449 struct cdrom_info *info = to_ide_cd(kref);
2450 struct cdrom_device_info *devinfo = &info->devinfo;
2451 ide_drive_t *drive = info->drive;
2452 struct gendisk *g = info->disk;
2454 kfree(info->buffer);
2456 if (devinfo->handle == drive && unregister_cdrom(devinfo))
2457 printk(KERN_ERR "%s: %s failed to unregister device from the cdrom "
2458 "driver.\n", __FUNCTION__, drive->name);
2459 drive->dsc_overlap = 0;
2460 drive->driver_data = NULL;
2461 blk_queue_prep_rq(drive->queue, NULL);
2462 g->private_data = NULL;
2467 static int ide_cd_probe(ide_drive_t *);
2469 #ifdef CONFIG_IDE_PROC_FS
2470 static int proc_idecd_read_capacity
2471 (char *page, char **start, off_t off, int count, int *eof, void *data)
2473 ide_drive_t *drive = data;
2476 len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive));
2477 PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
2480 static ide_proc_entry_t idecd_proc[] = {
2481 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
2482 { NULL, 0, NULL, NULL }
2486 static ide_driver_t ide_cdrom_driver = {
2488 .owner = THIS_MODULE,
2489 .name = "ide-cdrom",
2490 .bus = &ide_bus_type,
2492 .probe = ide_cd_probe,
2493 .remove = ide_cd_remove,
2494 .version = IDECD_VERSION,
2496 .supports_dsc_overlap = 1,
2497 .do_request = ide_do_rw_cdrom,
2498 .end_request = ide_end_request,
2499 .error = __ide_error,
2500 .abort = __ide_abort,
2501 #ifdef CONFIG_IDE_PROC_FS
2506 static int idecd_open(struct inode * inode, struct file * file)
2508 struct gendisk *disk = inode->i_bdev->bd_disk;
2509 struct cdrom_info *info;
2512 if (!(info = ide_cd_get(disk)))
2516 info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT);
2519 rc = cdrom_open(&info->devinfo, inode, file);
2527 static int idecd_release(struct inode * inode, struct file * file)
2529 struct gendisk *disk = inode->i_bdev->bd_disk;
2530 struct cdrom_info *info = ide_cd_g(disk);
2532 cdrom_release (&info->devinfo, file);
2539 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2541 struct packet_command cgc;
2546 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2549 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2551 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2555 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2556 return cdrom_mode_select(cdi, &cgc);
2559 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2561 struct packet_command cgc;
2566 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2568 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2572 spindown = buffer[11] & 0x0f;
2573 if (copy_to_user((void __user *)arg, &spindown, sizeof (char)))
2578 static int idecd_ioctl (struct inode *inode, struct file *file,
2579 unsigned int cmd, unsigned long arg)
2581 struct block_device *bdev = inode->i_bdev;
2582 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2586 case CDROMSETSPINDOWN:
2587 return idecd_set_spindown(&info->devinfo, arg);
2588 case CDROMGETSPINDOWN:
2589 return idecd_get_spindown(&info->devinfo, arg);
2594 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
2596 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2601 static int idecd_media_changed(struct gendisk *disk)
2603 struct cdrom_info *info = ide_cd_g(disk);
2604 return cdrom_media_changed(&info->devinfo);
2607 static int idecd_revalidate_disk(struct gendisk *disk)
2609 struct cdrom_info *info = ide_cd_g(disk);
2610 struct request_sense sense;
2612 ide_cd_read_toc(info->drive, &sense);
2617 static struct block_device_operations idecd_ops = {
2618 .owner = THIS_MODULE,
2620 .release = idecd_release,
2621 .ioctl = idecd_ioctl,
2622 .media_changed = idecd_media_changed,
2623 .revalidate_disk= idecd_revalidate_disk
2627 static char *ignore = NULL;
2629 module_param(ignore, charp, 0400);
2630 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2632 static int ide_cd_probe(ide_drive_t *drive)
2634 struct cdrom_info *info;
2636 struct request_sense sense;
2638 if (!strstr("ide-cdrom", drive->driver_req))
2640 if (!drive->present)
2642 if (drive->media != ide_cdrom && drive->media != ide_optical)
2644 /* skip drives that we were told to ignore */
2645 if (ignore != NULL) {
2646 if (strstr(ignore, drive->name)) {
2647 printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name);
2652 printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name);
2655 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
2657 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name);
2661 g = alloc_disk(1 << PARTN_BITS);
2665 ide_init_disk(g, drive);
2667 ide_proc_register_driver(drive, &ide_cdrom_driver);
2669 kref_init(&info->kref);
2671 info->drive = drive;
2672 info->driver = &ide_cdrom_driver;
2675 g->private_data = &info->driver;
2677 drive->driver_data = info;
2680 g->driverfs_dev = &drive->gendev;
2681 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2682 if (ide_cdrom_setup(drive)) {
2683 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
2684 ide_cd_release(&info->kref);
2688 ide_cd_read_toc(drive, &sense);
2689 g->fops = &idecd_ops;
2690 g->flags |= GENHD_FL_REMOVABLE;
2700 static void __exit ide_cdrom_exit(void)
2702 driver_unregister(&ide_cdrom_driver.gen_driver);
2705 static int __init ide_cdrom_init(void)
2707 return driver_register(&ide_cdrom_driver.gen_driver);
2710 MODULE_ALIAS("ide:*m-cdrom*");
2711 MODULE_ALIAS("ide-cd");
2712 module_init(ide_cdrom_init);
2713 module_exit(ide_cdrom_exit);
2714 MODULE_LICENSE("GPL");