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) 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 #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */
46 #include <asm/byteorder.h>
47 #include <asm/uaccess.h>
48 #include <asm/unaligned.h>
52 static DEFINE_MUTEX(idecd_ref_mutex);
54 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
56 #define ide_cd_g(disk) \
57 container_of((disk)->private_data, struct cdrom_info, driver)
59 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
61 struct cdrom_info *cd = NULL;
63 mutex_lock(&idecd_ref_mutex);
67 mutex_unlock(&idecd_ref_mutex);
71 static void ide_cd_release(struct kref *);
73 static void ide_cd_put(struct cdrom_info *cd)
75 mutex_lock(&idecd_ref_mutex);
76 kref_put(&cd->kref, ide_cd_release);
77 mutex_unlock(&idecd_ref_mutex);
80 /****************************************************************************
81 * Generic packet command support and error handling routines.
84 /* Mark that we've seen a media change, and invalidate our internal
86 static void cdrom_saw_media_change (ide_drive_t *drive)
88 struct cdrom_info *cd = drive->driver_data;
90 cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED;
91 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
92 cd->nsectors_buffered = 0;
95 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
96 struct request_sense *sense)
100 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
103 switch (sense->sense_key) {
104 case NO_SENSE: case RECOVERED_ERROR:
108 * don't care about tray state messages for
109 * e.g. capacity commands or in-progress or
112 if (sense->asc == 0x3a || sense->asc == 0x04)
116 case ILLEGAL_REQUEST:
118 * don't log START_STOP unit with LoEj set, since
119 * we cannot reliably check if drive can auto-close
121 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
127 * Make good and sure we've seen this potential media
128 * change. Some drives (i.e. Creative) fail to present
129 * the correct sense key in the error register.
131 cdrom_saw_media_change(drive);
141 void cdrom_analyze_sense_data(ide_drive_t *drive,
142 struct request *failed_command,
143 struct request_sense *sense)
145 unsigned long sector;
146 unsigned long bio_sectors;
148 struct cdrom_info *info = drive->driver_data;
150 if (!cdrom_log_sense(drive, failed_command, sense))
154 * If a read toc is executed for a CD-R or CD-RW medium where
155 * the first toc has not been recorded yet, it will fail with
156 * 05/24/00 (which is a confusing error)
158 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
159 if (sense->sense_key == 0x05 && sense->asc == 0x24)
162 if (sense->error_code == 0x70) { /* Current Error */
163 switch(sense->sense_key) {
165 case VOLUME_OVERFLOW:
166 case ILLEGAL_REQUEST:
169 if (failed_command == NULL ||
170 !blk_fs_request(failed_command))
172 sector = (sense->information[0] << 24) |
173 (sense->information[1] << 16) |
174 (sense->information[2] << 8) |
175 (sense->information[3]);
177 bio_sectors = bio_sectors(failed_command->bio);
180 if (drive->queue->hardsect_size == 2048)
181 sector <<= 2; /* Device sector size is 2K */
182 sector &= ~(bio_sectors -1);
183 valid = (sector - failed_command->sector) << 9;
187 if (sector < get_capacity(info->disk) &&
188 drive->probed_capacity - sector < 4 * 75) {
189 set_capacity(info->disk, sector);
194 ide_cd_log_error(drive->name, failed_command, sense);
198 * Initialize a ide-cd packet command request
200 void ide_cd_init_rq(ide_drive_t *drive, struct request *rq)
202 struct cdrom_info *cd = drive->driver_data;
204 ide_init_drive_cmd(rq);
205 rq->cmd_type = REQ_TYPE_ATA_PC;
206 rq->rq_disk = cd->disk;
209 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
210 struct request *failed_command)
212 struct cdrom_info *info = drive->driver_data;
213 struct request *rq = &info->request_sense_request;
216 sense = &info->sense_data;
218 /* stuff the sense request in front of our current request */
219 ide_cd_init_rq(drive, rq);
222 rq->cmd[0] = GPCMD_REQUEST_SENSE;
223 rq->cmd[4] = rq->data_len = 18;
225 rq->cmd_type = REQ_TYPE_SENSE;
227 /* NOTE! Save the failed command in "rq->buffer" */
228 rq->buffer = (void *) failed_command;
230 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
233 static void cdrom_end_request (ide_drive_t *drive, int uptodate)
235 struct request *rq = HWGROUP(drive)->rq;
236 int nsectors = rq->hard_cur_sectors;
238 if (blk_sense_request(rq) && uptodate) {
240 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
243 struct request *failed = (struct request *) rq->buffer;
244 struct cdrom_info *info = drive->driver_data;
245 void *sense = &info->sense_data;
250 sense = failed->sense;
251 failed->sense_len = rq->sense_len;
253 cdrom_analyze_sense_data(drive, failed, sense);
255 * now end failed request
257 if (blk_fs_request(failed)) {
258 if (ide_end_dequeued_request(drive, failed, 0,
259 failed->hard_nr_sectors))
262 spin_lock_irqsave(&ide_lock, flags);
263 if (__blk_end_request(failed, -EIO,
266 spin_unlock_irqrestore(&ide_lock, flags);
269 cdrom_analyze_sense_data(drive, NULL, sense);
272 if (!rq->current_nr_sectors && blk_fs_request(rq))
274 /* make sure it's fully ended */
275 if (blk_pc_request(rq))
276 nsectors = (rq->data_len + 511) >> 9;
280 ide_end_request(drive, uptodate, nsectors);
283 static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat)
287 ide_dump_status(drive, msg, stat);
290 /* Returns 0 if the request should be continued.
291 Returns 1 if the request was ended. */
292 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
294 struct request *rq = HWGROUP(drive)->rq;
295 int stat, err, sense_key;
297 /* Check for errors. */
298 stat = HWIF(drive)->INB(IDE_STATUS_REG);
302 if (OK_STAT(stat, good_stat, BAD_R_STAT))
305 /* Get the IDE error register. */
306 err = HWIF(drive)->INB(IDE_ERROR_REG);
307 sense_key = err >> 4;
310 printk("%s: missing rq in cdrom_decode_status\n", drive->name);
314 if (blk_sense_request(rq)) {
315 /* We got an error trying to get sense info
316 from the drive (probably while trying
317 to recover from a former error). Just give up. */
319 rq->cmd_flags |= REQ_FAILED;
320 cdrom_end_request(drive, 0);
321 ide_error(drive, "request sense failure", stat);
324 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
325 /* All other functions, except for READ. */
328 * if we have an error, pass back CHECK_CONDITION as the
331 if (blk_pc_request(rq) && !rq->errors)
332 rq->errors = SAM_STAT_CHECK_CONDITION;
334 /* Check for tray open. */
335 if (sense_key == NOT_READY) {
336 cdrom_saw_media_change (drive);
337 } else if (sense_key == UNIT_ATTENTION) {
338 /* Check for media change. */
339 cdrom_saw_media_change (drive);
340 /*printk("%s: media changed\n",drive->name);*/
342 } else if ((sense_key == ILLEGAL_REQUEST) &&
343 (rq->cmd[0] == GPCMD_START_STOP_UNIT)) {
345 * Don't print error message for this condition--
346 * SFF8090i indicates that 5/24/00 is the correct
347 * response to a request to close the tray if the
348 * drive doesn't have that capability.
349 * cdrom_log_sense() knows this!
351 } else if (!(rq->cmd_flags & REQ_QUIET)) {
352 /* Otherwise, print an error. */
353 ide_dump_status(drive, "packet command error", stat);
356 rq->cmd_flags |= REQ_FAILED;
359 * instead of playing games with moving completions around,
360 * remove failed request completely and end it when the
361 * request sense has completed
365 } else if (blk_fs_request(rq)) {
366 int do_end_request = 0;
368 /* Handle errors from READ and WRITE requests. */
370 if (blk_noretry_request(rq))
373 if (sense_key == NOT_READY) {
375 if (rq_data_dir(rq) == READ) {
376 cdrom_saw_media_change (drive);
378 /* Fail the request. */
379 printk ("%s: tray open\n", drive->name);
382 struct cdrom_info *info = drive->driver_data;
384 /* allow the drive 5 seconds to recover, some
385 * devices will return this error while flushing
388 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
390 if (time_after(jiffies, info->write_timeout))
396 * take a breather relying on the
397 * unplug timer to kick us again
399 spin_lock_irqsave(&ide_lock, flags);
400 blk_plug_device(drive->queue);
401 spin_unlock_irqrestore(&ide_lock,flags);
405 } else if (sense_key == UNIT_ATTENTION) {
407 cdrom_saw_media_change (drive);
409 /* Arrange to retry the request.
410 But be sure to give up if we've retried
412 if (++rq->errors > ERROR_MAX)
414 } else if (sense_key == ILLEGAL_REQUEST ||
415 sense_key == DATA_PROTECT) {
416 /* No point in retrying after an illegal
417 request or data protect error.*/
418 ide_dump_status_no_sense (drive, "command error", stat);
420 } else if (sense_key == MEDIUM_ERROR) {
421 /* No point in re-trying a zillion times on a bad
422 * sector... If we got here the error is not correctable */
423 ide_dump_status_no_sense (drive, "media error (bad sector)", stat);
425 } else if (sense_key == BLANK_CHECK) {
426 /* Disk appears blank ?? */
427 ide_dump_status_no_sense (drive, "media error (blank)", stat);
429 } else if ((err & ~ABRT_ERR) != 0) {
430 /* Go to the default handler
432 ide_error(drive, "cdrom_decode_status", stat);
434 } else if ((++rq->errors > ERROR_MAX)) {
435 /* We've racked up too many retries. Abort. */
439 /* End a request through request sense analysis when we have
440 sense data. We need this in order to perform end of media
447 * If we got a CHECK_CONDITION status,
448 * queue a request sense command.
451 cdrom_queue_request_sense(drive, NULL, NULL);
453 blk_dump_rq_flags(rq, "ide-cd: bad rq");
454 cdrom_end_request(drive, 0);
457 /* Retry, or handle the next request. */
461 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);
476 static int cdrom_timer_expiry(ide_drive_t *drive)
478 struct request *rq = HWGROUP(drive)->rq;
479 unsigned long wait = 0;
482 * Some commands are *slow* and normally take a long time to
483 * complete. Usually we can use the ATAPI "disconnect" to bypass
484 * this, but not all commands/drives support that. Let
485 * ide_timer_expiry keep polling us for these.
487 switch (rq->cmd[0]) {
489 case GPCMD_FORMAT_UNIT:
490 case GPCMD_RESERVE_RZONE_TRACK:
491 case GPCMD_CLOSE_TRACK:
492 case GPCMD_FLUSH_CACHE:
493 wait = ATAPI_WAIT_PC;
496 if (!(rq->cmd_flags & REQ_QUIET))
497 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]);
504 /* Set up the device registers for transferring a packet command on DEV,
505 expecting to later transfer XFERLEN bytes. HANDLER is the routine
506 which actually transfers the command to the drive. If this is a
507 drq_interrupt device, this routine will arrange for HANDLER to be
508 called when the interrupt from the drive arrives. Otherwise, HANDLER
509 will be called immediately after the drive is prepared for the transfer. */
511 static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
513 ide_handler_t *handler)
515 ide_startstop_t startstop;
516 struct cdrom_info *info = drive->driver_data;
517 ide_hwif_t *hwif = drive->hwif;
519 /* Wait for the controller to be idle. */
520 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
523 /* FIXME: for Virtual DMA we must check harder */
525 info->dma = !hwif->dma_setup(drive);
527 /* Set up the controller registers. */
528 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL |
529 IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma);
531 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
532 /* waiting for CDB interrupt, not DMA yet. */
534 drive->waiting_for_dma = 0;
537 ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry);
543 spin_lock_irqsave(&ide_lock, flags);
544 hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG);
546 spin_unlock_irqrestore(&ide_lock, flags);
548 return (*handler) (drive);
552 /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
553 The device registers must have already been prepared
554 by cdrom_start_packet_command.
555 HANDLER is the interrupt handler to call when the command completes
556 or there's data ready. */
557 #define ATAPI_MIN_CDB_BYTES 12
558 static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive,
560 ide_handler_t *handler)
562 ide_hwif_t *hwif = drive->hwif;
564 struct cdrom_info *info = drive->driver_data;
565 ide_startstop_t startstop;
567 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
568 /* Here we should have been called after receiving an interrupt
569 from the device. DRQ should how be set. */
571 /* Check for errors. */
572 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
575 /* Ok, next interrupt will be DMA interrupt. */
577 drive->waiting_for_dma = 1;
579 /* Otherwise, we must wait for DRQ to get set. */
580 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
581 BUSY_STAT, WAIT_READY))
585 /* Arm the interrupt handler. */
586 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
588 /* ATAPI commands get padded out to 12 bytes minimum */
589 cmd_len = COMMAND_SIZE(rq->cmd[0]);
590 if (cmd_len < ATAPI_MIN_CDB_BYTES)
591 cmd_len = ATAPI_MIN_CDB_BYTES;
593 /* Send the command to the device. */
594 HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len);
596 /* Start the DMA if need be */
598 hwif->dma_start(drive);
603 /****************************************************************************
604 * Block read functions.
607 typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
609 static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
613 xf(drive, &dum, sizeof(dum));
618 static void ide_cd_drain_data(ide_drive_t *drive, int nsects)
621 static char dum[SECTOR_SIZE];
623 drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum));
629 * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
630 * buffer. Once the first sector is added, any subsequent sectors are
631 * assumed to be continuous (until the buffer is cleared). For the first
632 * sector added, SECTOR is its sector number. (SECTOR is then ignored until
633 * the buffer is cleared.)
635 static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
636 int sectors_to_transfer)
638 struct cdrom_info *info = drive->driver_data;
640 /* Number of sectors to read into the buffer. */
641 int sectors_to_buffer = min_t(int, sectors_to_transfer,
642 (SECTOR_BUFFER_SIZE >> SECTOR_BITS) -
643 info->nsectors_buffered);
647 /* If we couldn't get a buffer, don't try to buffer anything... */
648 if (info->buffer == NULL)
649 sectors_to_buffer = 0;
651 /* If this is the first sector in the buffer, remember its number. */
652 if (info->nsectors_buffered == 0)
653 info->sector_buffered = sector;
655 /* Read the data into the buffer. */
656 dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE;
657 while (sectors_to_buffer > 0) {
658 HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE);
660 --sectors_to_transfer;
661 ++info->nsectors_buffered;
665 /* Throw away any remaining data. */
666 ide_cd_drain_data(drive, sectors_to_transfer);
670 * Check the contents of the interrupt reason register from the cdrom
671 * and attempt to recover if there are problems. Returns 0 if everything's
672 * ok; nonzero if the request has been terminated.
675 int ide_cd_check_ireason(ide_drive_t *drive, int len, int ireason, int rw)
678 * ireason == 0: the drive wants to receive data from us
679 * ireason == 2: the drive is expecting to transfer data to us
681 if (ireason == (!rw << 1))
683 else if (ireason == (rw << 1)) {
684 ide_hwif_t *hwif = drive->hwif;
688 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
689 drive->name, __FUNCTION__);
691 xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes;
692 ide_cd_pad_transfer(drive, xf, len);
693 } else if (rw == 0 && ireason == 1) {
694 /* Some drives (ASUS) seem to tell us that status
695 * info is available. just get it and ignore.
697 (void) HWIF(drive)->INB(IDE_STATUS_REG);
700 /* Drive wants a command packet, or invalid ireason... */
701 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
702 drive->name, __FUNCTION__, ireason);
705 cdrom_end_request(drive, 0);
710 * Assume that the drive will always provide data in multiples of at least
711 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
713 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
715 struct cdrom_info *cd = drive->driver_data;
717 if ((len % SECTOR_SIZE) == 0)
720 printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
721 drive->name, __FUNCTION__, len);
723 if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
724 printk(KERN_ERR " This drive is not supported by "
725 "this version of the driver\n");
727 printk(KERN_ERR " Trying to limit transfer sizes\n");
728 cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
735 * Try to satisfy some of the current read request from our cached data.
736 * Returns nonzero if the request has been completed, zero otherwise.
738 static int cdrom_read_from_buffer (ide_drive_t *drive)
740 struct cdrom_info *info = drive->driver_data;
741 struct request *rq = HWGROUP(drive)->rq;
742 unsigned short sectors_per_frame;
744 sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS;
746 /* Can't do anything if there's no buffer. */
747 if (info->buffer == NULL) return 0;
749 /* Loop while this request needs data and the next block is present
751 while (rq->nr_sectors > 0 &&
752 rq->sector >= info->sector_buffered &&
753 rq->sector < info->sector_buffered + info->nsectors_buffered) {
754 if (rq->current_nr_sectors == 0)
755 cdrom_end_request(drive, 1);
759 (rq->sector - info->sector_buffered) * SECTOR_SIZE,
761 rq->buffer += SECTOR_SIZE;
762 --rq->current_nr_sectors;
767 /* If we've satisfied the current request,
768 terminate it successfully. */
769 if (rq->nr_sectors == 0) {
770 cdrom_end_request(drive, 1);
774 /* Move on to the next buffer if needed. */
775 if (rq->current_nr_sectors == 0)
776 cdrom_end_request(drive, 1);
778 /* If this condition does not hold, then the kluge i use to
779 represent the number of sectors to skip at the start of a transfer
780 will fail. I think that this will never happen, but let's be
781 paranoid and check. */
782 if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) &&
783 (rq->sector & (sectors_per_frame - 1))) {
784 printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
785 drive->name, (long)rq->sector);
786 cdrom_end_request(drive, 0);
793 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
796 * Routine to send a read/write packet command to the drive.
797 * This is usually called directly from cdrom_start_{read,write}().
798 * However, for drq_interrupt devices, it is called from an interrupt
799 * when the drive is ready to accept the command.
801 static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
803 struct request *rq = HWGROUP(drive)->rq;
805 if (rq_data_dir(rq) == READ) {
806 unsigned short sectors_per_frame =
807 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
808 int nskip = rq->sector & (sectors_per_frame - 1);
811 * If the requested sector doesn't start on a frame boundary,
812 * we must adjust the start of the transfer so that it does,
813 * and remember to skip the first few sectors.
815 * If the rq->current_nr_sectors field is larger than the size
816 * of the buffer, it will mean that we're to skip a number of
817 * sectors equal to the amount by which rq->current_nr_sectors
818 * is larger than the buffer size.
821 /* Sanity check... */
822 if (rq->current_nr_sectors !=
823 bio_cur_sectors(rq->bio)) {
824 printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
825 drive->name, __FUNCTION__,
826 rq->current_nr_sectors);
827 cdrom_end_request(drive, 0);
830 rq->current_nr_sectors += nskip;
835 /* the immediate bit */
838 /* Set up the command */
839 rq->timeout = ATAPI_WAIT_PC;
841 /* Send the command to the drive and return. */
842 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
845 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
846 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
847 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
849 static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive)
851 struct cdrom_info *info = drive->driver_data;
853 static int retry = 10;
855 if (cdrom_decode_status(drive, 0, &stat))
858 info->cd_flags |= IDE_CD_FLAG_SEEKING;
860 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
863 * this condition is far too common, to bother
866 /* printk("%s: disabled DSC seek overlap\n", drive->name);*/
867 drive->dsc_overlap = 0;
873 static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive)
875 struct request *rq = HWGROUP(drive)->rq;
876 sector_t frame = rq->sector;
878 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
880 memset(rq->cmd, 0, sizeof(rq->cmd));
881 rq->cmd[0] = GPCMD_SEEK;
882 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
884 rq->timeout = ATAPI_WAIT_PC;
885 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
888 static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block)
890 struct cdrom_info *info = drive->driver_data;
893 info->start_seek = jiffies;
894 return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation);
897 /* Fix up a possibly partially-processed request so that we can
898 start it over entirely, or even put it back on the request queue. */
899 static void restore_request (struct request *rq)
901 if (rq->buffer != bio_data(rq->bio)) {
902 sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE;
904 rq->buffer = bio_data(rq->bio);
908 rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio);
909 rq->hard_nr_sectors = rq->nr_sectors;
910 rq->hard_sector = rq->sector;
911 rq->q->prep_rq_fn(rq->q, rq);
914 /****************************************************************************
915 * Execute all other packet commands.
918 static void ide_cd_request_sense_fixup(struct request *rq)
921 * Some of the trailing request sense fields are optional,
922 * and some drives don't send them. Sigh.
924 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
925 rq->data_len > 0 && rq->data_len <= 5)
926 while (rq->data_len > 0) {
927 *(u8 *)rq->data++ = 0;
932 int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq)
934 struct request_sense sense;
936 unsigned int flags = rq->cmd_flags;
938 if (rq->sense == NULL)
941 /* Start of retry loop. */
944 unsigned long time = jiffies;
945 rq->cmd_flags = flags;
947 error = ide_do_drive_cmd(drive, rq, ide_wait);
948 time = jiffies - time;
950 /* FIXME: we should probably abort/retry or something
951 * in case of failure */
952 if (rq->cmd_flags & REQ_FAILED) {
953 /* The request failed. Retry if it was due to a unit
955 (usually means media was changed). */
956 struct request_sense *reqbuf = rq->sense;
958 if (reqbuf->sense_key == UNIT_ATTENTION)
959 cdrom_saw_media_change(drive);
960 else if (reqbuf->sense_key == NOT_READY &&
961 reqbuf->asc == 4 && reqbuf->ascq != 4) {
962 /* The drive is in the process of loading
963 a disk. Retry, but wait a little to give
964 the drive time to complete the load. */
967 /* Otherwise, don't retry. */
973 /* End of retry loop. */
974 } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
976 /* Return an error if the command failed. */
977 return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
981 * Called from blk_end_request_callback() after the data of the request
982 * is completed and before the request is completed.
983 * By returning value '1', blk_end_request_callback() returns immediately
984 * without completing the request.
986 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
991 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
993 struct cdrom_info *info = drive->driver_data;
994 struct request *rq = HWGROUP(drive)->rq;
995 xfer_func_t *xferfunc;
996 ide_expiry_t *expiry = NULL;
997 int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;
998 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
999 unsigned int timeout;
1002 /* Check for errors. */
1006 dma_error = HWIF(drive)->ide_dma_end(drive);
1008 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
1009 write ? "write" : "read");
1014 if (cdrom_decode_status(drive, 0, &stat))
1018 * using dma, transfer is complete now
1022 return ide_error(drive, "dma error", stat);
1023 if (blk_fs_request(rq)) {
1024 ide_end_request(drive, 1, rq->nr_sectors);
1031 * ok we fall to pio :/
1033 ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
1034 lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG);
1035 highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
1037 len = lowcyl + (256 * highcyl);
1039 thislen = blk_fs_request(rq) ? len : rq->data_len;
1044 * If DRQ is clear, the command has completed.
1046 if ((stat & DRQ_STAT) == 0) {
1047 if (blk_fs_request(rq)) {
1049 * If we're not done reading/writing, complain.
1050 * Otherwise, complete the command normally.
1053 if (rq->current_nr_sectors > 0) {
1054 printk(KERN_ERR "%s: %s: data underrun "
1056 drive->name, __FUNCTION__,
1057 rq->current_nr_sectors);
1059 rq->cmd_flags |= REQ_FAILED;
1062 cdrom_end_request(drive, uptodate);
1064 } else if (!blk_pc_request(rq)) {
1065 ide_cd_request_sense_fixup(rq);
1066 /* Complain if we still have data left to transfer. */
1067 uptodate = rq->data_len ? 0 : 1;
1073 * check which way to transfer data
1075 if (blk_fs_request(rq) || blk_pc_request(rq)) {
1076 if (ide_cd_check_ireason(drive, len, ireason, write))
1079 if (blk_fs_request(rq) && write == 0) {
1082 if (ide_cd_check_transfer_size(drive, len)) {
1083 cdrom_end_request(drive, 0);
1088 * First, figure out if we need to bit-bucket
1089 * any of the leading sectors.
1091 nskip = min_t(int, rq->current_nr_sectors
1092 - bio_cur_sectors(rq->bio),
1095 ide_cd_drain_data(drive, nskip);
1096 rq->current_nr_sectors -= nskip;
1097 thislen -= (nskip << 9);
1104 xferfunc = HWIF(drive)->atapi_output_bytes;
1105 } else if (ireason == 2 || (ireason == 1 &&
1106 (blk_fs_request(rq) || blk_pc_request(rq)))) {
1108 xferfunc = HWIF(drive)->atapi_input_bytes;
1110 printk(KERN_ERR "%s: %s: The drive "
1111 "appears confused (ireason = 0x%02x). "
1112 "Trying to recover by ending request.\n",
1113 drive->name, __FUNCTION__, ireason);
1120 while (thislen > 0) {
1121 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
1122 int blen = rq->data_len;
1128 if (blk_fs_request(rq)) {
1130 blen = rq->current_nr_sectors << 9;
1132 ptr = bio_data(rq->bio);
1133 blen = bio_iovec(rq->bio)->bv_len;
1138 if (blk_fs_request(rq) && !write)
1140 * If the buffers are full, cache the rest
1141 * of the data in our internal buffer.
1143 cdrom_buffer_sectors(drive, rq->sector,
1146 printk(KERN_ERR "%s: confused, missing data\n",
1148 blk_dump_rq_flags(rq, rq_data_dir(rq)
1149 ? "cdrom_newpc_intr, write"
1150 : "cdrom_newpc_intr, read");
1158 xferfunc(drive, ptr, blen);
1163 if (blk_fs_request(rq)) {
1165 rq->nr_sectors -= (blen >> 9);
1166 rq->current_nr_sectors -= (blen >> 9);
1167 rq->sector += (blen >> 9);
1169 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1170 cdrom_end_request(drive, 1);
1172 rq->data_len -= blen;
1175 * The request can't be completed until DRQ is cleared.
1176 * So complete the data, but don't complete the request
1177 * using the dummy function for the callback feature
1178 * of blk_end_request_callback().
1181 blk_end_request_callback(rq, 0, blen,
1182 cdrom_newpc_intr_dummy_cb);
1188 if (write && blk_sense_request(rq))
1189 rq->sense_len += thislen;
1194 if (!blk_fs_request(rq) && len > 0)
1195 ide_cd_pad_transfer(drive, xferfunc, len);
1197 if (blk_pc_request(rq)) {
1198 timeout = rq->timeout;
1200 timeout = ATAPI_WAIT_PC;
1201 if (!blk_fs_request(rq))
1202 expiry = cdrom_timer_expiry;
1205 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
1209 if (blk_pc_request(rq)) {
1210 unsigned long flags;
1212 spin_lock_irqsave(&ide_lock, flags);
1213 if (__blk_end_request(rq, 0, rq->data_len))
1215 HWGROUP(drive)->rq = NULL;
1216 spin_unlock_irqrestore(&ide_lock, flags);
1219 rq->cmd_flags |= REQ_FAILED;
1220 cdrom_end_request(drive, uptodate);
1225 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
1227 struct cdrom_info *cd = drive->driver_data;
1228 int write = rq_data_dir(rq) == WRITE;
1229 unsigned short sectors_per_frame =
1230 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1234 * disk has become write protected
1236 if (cd->disk->policy) {
1237 cdrom_end_request(drive, 0);
1242 * We may be retrying this request after an error. Fix up any
1243 * weirdness which might be present in the request packet.
1245 restore_request(rq);
1247 /* Satisfy whatever we can of this request from our cache. */
1248 if (cdrom_read_from_buffer(drive))
1253 * use DMA, if possible / writes *must* be hardware frame aligned
1255 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1256 (rq->sector & (sectors_per_frame - 1))) {
1258 cdrom_end_request(drive, 0);
1263 cd->dma = drive->using_dma;
1265 /* Clear the local sector buffer. */
1266 cd->nsectors_buffered = 0;
1269 cd->devinfo.media_written = 1;
1271 /* Start sending the read/write request to the drive. */
1272 return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont);
1275 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1277 struct request *rq = HWGROUP(drive)->rq;
1280 rq->timeout = ATAPI_WAIT_PC;
1282 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1285 static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1287 struct cdrom_info *info = drive->driver_data;
1289 if (blk_pc_request(rq))
1290 rq->cmd_flags |= REQ_QUIET;
1292 rq->cmd_flags &= ~REQ_FAILED;
1300 int mask = drive->queue->dma_alignment;
1301 unsigned long addr = (unsigned long) page_address(bio_page(rq->bio));
1303 info->dma = drive->using_dma;
1306 * check if dma is safe
1308 * NOTE! The "len" and "addr" checks should possibly have
1311 if ((rq->data_len & 15) || (addr & mask))
1315 /* Start sending the command to the drive. */
1316 return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont);
1319 /****************************************************************************
1320 * cdrom driver request routine.
1322 static ide_startstop_t
1323 ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block)
1325 ide_startstop_t action;
1326 struct cdrom_info *info = drive->driver_data;
1328 if (blk_fs_request(rq)) {
1329 if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
1330 unsigned long elapsed = jiffies - info->start_seek;
1331 int stat = HWIF(drive)->INB(IDE_STATUS_REG);
1333 if ((stat & SEEK_STAT) != SEEK_STAT) {
1334 if (elapsed < IDECD_SEEK_TIMEOUT) {
1335 ide_stall_queue(drive, IDECD_SEEK_TIMER);
1338 printk (KERN_ERR "%s: DSC timeout\n", drive->name);
1340 info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
1342 if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) {
1343 action = cdrom_start_seek(drive, block);
1345 action = cdrom_start_rw(drive, rq);
1346 info->last_block = block;
1348 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
1349 rq->cmd_type == REQ_TYPE_ATA_PC) {
1350 return cdrom_do_block_pc(drive, rq);
1351 } else if (blk_special_request(rq)) {
1353 * right now this can only be a reset...
1355 cdrom_end_request(drive, 1);
1359 blk_dump_rq_flags(rq, "ide-cd bad flags");
1360 cdrom_end_request(drive, 0);
1366 /****************************************************************************
1369 * Routines which queue packet commands take as a final argument a pointer
1370 * to a request_sense struct. If execution of the command results
1371 * in an error with a CHECK CONDITION status, this structure will be filled
1372 * with the results of the subsequent request sense command. The pointer
1373 * can also be NULL, in which case no sense information is returned.
1377 void msf_from_bcd (struct atapi_msf *msf)
1379 msf->minute = BCD2BIN(msf->minute);
1380 msf->second = BCD2BIN(msf->second);
1381 msf->frame = BCD2BIN(msf->frame);
1384 static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1387 struct cdrom_info *info = drive->driver_data;
1388 struct cdrom_device_info *cdi = &info->devinfo;
1390 ide_cd_init_rq(drive, &req);
1393 req.cmd[0] = GPCMD_TEST_UNIT_READY;
1394 req.cmd_flags |= REQ_QUIET;
1397 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
1398 * switch CDs instead of supporting the LOAD_UNLOAD opcode.
1400 req.cmd[7] = cdi->sanyo_slot % 3;
1402 return ide_cd_queue_pc(drive, &req);
1405 /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
1406 int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
1407 struct request_sense *sense)
1409 struct cdrom_info *cd = drive->driver_data;
1410 struct request_sense my_sense;
1417 /* If the drive cannot lock the door, just pretend. */
1418 if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) {
1421 ide_cd_init_rq(drive, &req);
1423 req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
1424 req.cmd[4] = lockflag ? 1 : 0;
1425 stat = ide_cd_queue_pc(drive, &req);
1428 /* If we got an illegal field error, the drive
1429 probably cannot lock the door. */
1431 sense->sense_key == ILLEGAL_REQUEST &&
1432 (sense->asc == 0x24 || sense->asc == 0x20)) {
1433 printk (KERN_ERR "%s: door locking not supported\n",
1435 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
1439 /* no medium, that's alright. */
1440 if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
1445 cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED;
1447 cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED;
1454 /* Eject the disk if EJECTFLAG is 0.
1455 If EJECTFLAG is 1, try to reload the disk. */
1456 static int cdrom_eject(ide_drive_t *drive, int ejectflag,
1457 struct request_sense *sense)
1459 struct cdrom_info *cd = drive->driver_data;
1460 struct cdrom_device_info *cdi = &cd->devinfo;
1464 if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag)
1465 return -EDRIVE_CANT_DO_THIS;
1467 /* reload fails on some drives, if the tray is locked */
1468 if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag)
1471 ide_cd_init_rq(drive, &req);
1473 /* only tell drive to close tray if open, if it can do that */
1474 if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
1478 req.cmd[0] = GPCMD_START_STOP_UNIT;
1479 req.cmd[4] = loej | (ejectflag != 0);
1481 return ide_cd_queue_pc(drive, &req);
1484 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1485 unsigned long *sectors_per_frame,
1486 struct request_sense *sense)
1496 ide_cd_init_rq(drive, &req);
1499 req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1500 req.data = (char *)&capbuf;
1501 req.data_len = sizeof(capbuf);
1502 req.cmd_flags |= REQ_QUIET;
1504 stat = ide_cd_queue_pc(drive, &req);
1506 *capacity = 1 + be32_to_cpu(capbuf.lba);
1507 *sectors_per_frame =
1508 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1514 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1515 int format, char *buf, int buflen,
1516 struct request_sense *sense)
1520 ide_cd_init_rq(drive, &req);
1524 req.data_len = buflen;
1525 req.cmd_flags |= REQ_QUIET;
1526 req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1527 req.cmd[6] = trackno;
1528 req.cmd[7] = (buflen >> 8);
1529 req.cmd[8] = (buflen & 0xff);
1530 req.cmd[9] = (format << 6);
1535 return ide_cd_queue_pc(drive, &req);
1538 /* Try to read the entire TOC for the disk into our internal buffer. */
1539 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1541 int stat, ntracks, i;
1542 struct cdrom_info *info = drive->driver_data;
1543 struct cdrom_device_info *cdi = &info->devinfo;
1544 struct atapi_toc *toc = info->toc;
1546 struct atapi_toc_header hdr;
1547 struct atapi_toc_entry ent;
1550 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1553 /* Try to allocate space. */
1554 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1556 printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name);
1562 /* Check to see if the existing data is still valid.
1563 If it is, just return. */
1564 (void) cdrom_check_status(drive, sense);
1566 if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
1569 /* Try to get the total cdrom capacity and sector size. */
1570 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1573 toc->capacity = 0x1fffff;
1575 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1576 /* Save a private copy of te TOC capacity for error handling */
1577 drive->probed_capacity = toc->capacity * sectors_per_frame;
1579 blk_queue_hardsect_size(drive->queue,
1580 sectors_per_frame << SECTOR_BITS);
1582 /* First read just the header, so we know how long the TOC is. */
1583 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1584 sizeof(struct atapi_toc_header), sense);
1588 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1589 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1590 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1593 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1596 if (ntracks > MAX_TRACKS)
1597 ntracks = MAX_TRACKS;
1599 /* Now read the whole schmeer. */
1600 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1602 sizeof(struct atapi_toc_header) +
1604 sizeof(struct atapi_toc_entry), sense);
1606 if (stat && toc->hdr.first_track > 1) {
1607 /* Cds with CDI tracks only don't have any TOC entries,
1608 despite of this the returned values are
1609 first_track == last_track = number of CDI tracks + 1,
1610 so that this case is indistinguishable from the same
1611 layout plus an additional audio track.
1612 If we get an error for the regular case, we assume
1613 a CDI without additional audio tracks. In this case
1614 the readable TOC is empty (CDI tracks are not included)
1615 and only holds the Leadout entry. Heiko Eißfeldt */
1617 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1619 sizeof(struct atapi_toc_header) +
1621 sizeof(struct atapi_toc_entry),
1626 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1627 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1628 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
1630 toc->hdr.first_track = CDROM_LEADOUT;
1631 toc->hdr.last_track = CDROM_LEADOUT;
1638 toc->hdr.toc_length = ntohs (toc->hdr.toc_length);
1640 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
1641 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1642 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1645 for (i = 0; i <= ntracks; i++) {
1646 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1647 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
1648 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
1649 msf_from_bcd(&toc->ent[i].addr.msf);
1651 toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute,
1652 toc->ent[i].addr.msf.second,
1653 toc->ent[i].addr.msf.frame);
1656 /* Read the multisession information. */
1657 if (toc->hdr.first_track != CDROM_LEADOUT) {
1658 /* Read the multisession information. */
1659 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1660 sizeof(ms_tmp), sense);
1664 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1666 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT;
1667 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1670 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1671 /* Re-read multisession information using MSF format */
1672 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1673 sizeof(ms_tmp), sense);
1677 msf_from_bcd (&ms_tmp.ent.addr.msf);
1678 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1679 ms_tmp.ent.addr.msf.second,
1680 ms_tmp.ent.addr.msf.frame);
1683 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1685 /* Now try to get the total cdrom capacity. */
1686 stat = cdrom_get_last_written(cdi, &last_written);
1687 if (!stat && (last_written > toc->capacity)) {
1688 toc->capacity = last_written;
1689 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1690 drive->probed_capacity = toc->capacity * sectors_per_frame;
1693 /* Remember that we've read this stuff. */
1694 info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
1699 /* the generic packet interface to cdrom.c */
1700 static int ide_cdrom_packet(struct cdrom_device_info *cdi,
1701 struct packet_command *cgc)
1704 ide_drive_t *drive = cdi->handle;
1706 if (cgc->timeout <= 0)
1707 cgc->timeout = ATAPI_WAIT_PC;
1709 /* here we queue the commands from the uniform CD-ROM
1710 layer. the packet must be complete, as we do not
1712 ide_cd_init_rq(drive, &req);
1713 memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE);
1715 memset(cgc->sense, 0, sizeof(struct request_sense));
1716 req.data = cgc->buffer;
1717 req.data_len = cgc->buflen;
1718 req.timeout = cgc->timeout;
1721 req.cmd_flags |= REQ_QUIET;
1723 req.sense = cgc->sense;
1724 cgc->stat = ide_cd_queue_pc(drive, &req);
1726 cgc->buflen -= req.data_len;
1731 int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position)
1733 ide_drive_t *drive = cdi->handle;
1734 struct request_sense sense;
1737 int stat = ide_cd_lockdoor(drive, 0, &sense);
1743 return cdrom_eject(drive, !position, &sense);
1746 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1748 struct cdrom_info *info = drive->driver_data;
1749 struct cdrom_device_info *cdi = &info->devinfo;
1750 struct packet_command cgc;
1751 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1753 if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
1754 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1756 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1757 do { /* we seem to get stat=0x01,err=0x00 the first time (??) */
1758 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1761 } while (--attempts);
1765 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1767 struct cdrom_info *cd = drive->driver_data;
1768 u16 curspeed, maxspeed;
1770 curspeed = *(u16 *)&buf[8 + 14];
1771 maxspeed = *(u16 *)&buf[8 + 8];
1773 if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
1774 curspeed = le16_to_cpu(curspeed);
1775 maxspeed = le16_to_cpu(maxspeed);
1777 curspeed = be16_to_cpu(curspeed);
1778 maxspeed = be16_to_cpu(maxspeed);
1781 cd->current_speed = (curspeed + (176/2)) / 176;
1782 cd->max_speed = (maxspeed + (176/2)) / 176;
1786 * add logic to try GET_EVENT command first to check for media and tray
1787 * status. this should be supported by newer cd-r/w and all DVD etc
1791 int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr)
1793 ide_drive_t *drive = cdi->handle;
1794 struct media_event_desc med;
1795 struct request_sense sense;
1798 if (slot_nr != CDSL_CURRENT)
1801 stat = cdrom_check_status(drive, &sense);
1802 if (!stat || sense.sense_key == UNIT_ATTENTION)
1805 if (!cdrom_get_media_event(cdi, &med)) {
1806 if (med.media_present)
1808 else if (med.door_open)
1809 return CDS_TRAY_OPEN;
1814 if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04)
1818 * If not using Mt Fuji extended media tray reports,
1819 * just return TRAY_OPEN since ATAPI doesn't provide
1820 * any other way to detect this...
1822 if (sense.sense_key == NOT_READY) {
1823 if (sense.asc == 0x3a && sense.ascq == 1)
1826 return CDS_TRAY_OPEN;
1828 return CDS_DRIVE_NOT_READY;
1831 /****************************************************************************
1832 * Other driver requests (open, close, check media change).
1836 int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi,
1839 ide_drive_t *drive = cdi->handle;
1840 struct cdrom_info *cd = drive->driver_data;
1843 if (slot_nr == CDSL_CURRENT) {
1844 (void) cdrom_check_status(drive, NULL);
1845 retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0;
1846 cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED;
1855 int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose)
1861 * Close down the device. Invalidate all cached blocks.
1865 void ide_cdrom_release_real (struct cdrom_device_info *cdi)
1867 ide_drive_t *drive = cdi->handle;
1868 struct cdrom_info *cd = drive->driver_data;
1870 if (!cdi->use_count)
1871 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
1874 #define IDE_CD_CAPABILITIES \
1875 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1876 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1877 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1878 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1879 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1881 static struct cdrom_device_ops ide_cdrom_dops = {
1882 .open = ide_cdrom_open_real,
1883 .release = ide_cdrom_release_real,
1884 .drive_status = ide_cdrom_drive_status,
1885 .media_changed = ide_cdrom_check_media_change_real,
1886 .tray_move = ide_cdrom_tray_move,
1887 .lock_door = ide_cdrom_lock_door,
1888 .select_speed = ide_cdrom_select_speed,
1889 .get_last_session = ide_cdrom_get_last_session,
1890 .get_mcn = ide_cdrom_get_mcn,
1891 .reset = ide_cdrom_reset,
1892 .audio_ioctl = ide_cdrom_audio_ioctl,
1893 .capability = IDE_CD_CAPABILITIES,
1894 .generic_packet = ide_cdrom_packet,
1897 static int ide_cdrom_register (ide_drive_t *drive, int nslots)
1899 struct cdrom_info *info = drive->driver_data;
1900 struct cdrom_device_info *devinfo = &info->devinfo;
1902 devinfo->ops = &ide_cdrom_dops;
1903 devinfo->speed = info->current_speed;
1904 devinfo->capacity = nslots;
1905 devinfo->handle = drive;
1906 strcpy(devinfo->name, drive->name);
1908 if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
1909 devinfo->mask |= CDC_SELECT_SPEED;
1911 devinfo->disk = info->disk;
1912 return register_cdrom(devinfo);
1916 int ide_cdrom_probe_capabilities (ide_drive_t *drive)
1918 struct cdrom_info *cd = drive->driver_data;
1919 struct cdrom_device_info *cdi = &cd->devinfo;
1920 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1921 mechtype_t mechtype;
1924 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1925 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1926 CDC_MO_DRIVE | CDC_RAM);
1928 if (drive->media == ide_optical) {
1929 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1930 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name);
1934 if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
1935 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
1936 cdi->mask &= ~CDC_PLAY_AUDIO;
1941 * we have to cheat a little here. the packet will eventually
1942 * be queued with ide_cdrom_packet(), which extracts the
1943 * drive from cdi->handle. Since this device hasn't been
1944 * registered with the Uniform layer yet, it can't do this.
1945 * Same goes for cdi->ops.
1947 cdi->handle = drive;
1948 cdi->ops = &ide_cdrom_dops;
1950 if (ide_cdrom_get_capabilities(drive, buf))
1953 if ((buf[8 + 6] & 0x01) == 0)
1954 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
1955 if (buf[8 + 6] & 0x08)
1956 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
1957 if (buf[8 + 3] & 0x01)
1958 cdi->mask &= ~CDC_CD_R;
1959 if (buf[8 + 3] & 0x02)
1960 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1961 if (buf[8 + 2] & 0x38)
1962 cdi->mask &= ~CDC_DVD;
1963 if (buf[8 + 3] & 0x20)
1964 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1965 if (buf[8 + 3] & 0x10)
1966 cdi->mask &= ~CDC_DVD_R;
1967 if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
1968 cdi->mask &= ~CDC_PLAY_AUDIO;
1970 mechtype = buf[8 + 6] >> 5;
1971 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
1972 cdi->mask |= CDC_CLOSE_TRAY;
1974 if (cdi->sanyo_slot > 0) {
1975 cdi->mask &= ~CDC_SELECT_DISC;
1977 } else if (mechtype == mechtype_individual_changer ||
1978 mechtype == mechtype_cartridge_changer) {
1979 nslots = cdrom_number_of_slots(cdi);
1981 cdi->mask &= ~CDC_SELECT_DISC;
1984 ide_cdrom_update_speed(drive, buf);
1986 printk(KERN_INFO "%s: ATAPI", drive->name);
1988 /* don't print speed if the drive reported 0 */
1990 printk(KERN_CONT " %dX", cd->max_speed);
1992 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1994 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1995 printk(KERN_CONT " DVD%s%s",
1996 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1997 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
1999 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
2000 printk(KERN_CONT " CD%s%s",
2001 (cdi->mask & CDC_CD_R) ? "" : "-R",
2002 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
2004 if ((cdi->mask & CDC_SELECT_DISC) == 0)
2005 printk(KERN_CONT " changer w/%d slots", nslots);
2007 printk(KERN_CONT " drive");
2009 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
2014 #ifdef CONFIG_IDE_PROC_FS
2015 static void ide_cdrom_add_settings(ide_drive_t *drive)
2017 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
2020 static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
2024 * standard prep_rq_fn that builds 10 byte cmds
2026 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
2028 int hard_sect = queue_hardsect_size(q);
2029 long block = (long)rq->hard_sector / (hard_sect >> 9);
2030 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
2032 memset(rq->cmd, 0, sizeof(rq->cmd));
2034 if (rq_data_dir(rq) == READ)
2035 rq->cmd[0] = GPCMD_READ_10;
2037 rq->cmd[0] = GPCMD_WRITE_10;
2042 rq->cmd[2] = (block >> 24) & 0xff;
2043 rq->cmd[3] = (block >> 16) & 0xff;
2044 rq->cmd[4] = (block >> 8) & 0xff;
2045 rq->cmd[5] = block & 0xff;
2048 * and transfer length
2050 rq->cmd[7] = (blocks >> 8) & 0xff;
2051 rq->cmd[8] = blocks & 0xff;
2057 * Most of the SCSI commands are supported directly by ATAPI devices.
2058 * This transform handles the few exceptions.
2060 static int ide_cdrom_prep_pc(struct request *rq)
2065 * Transform 6-byte read/write commands to the 10-byte version
2067 if (c[0] == READ_6 || c[0] == WRITE_6) {
2074 c[0] += (READ_10 - READ_6);
2080 * it's silly to pretend we understand 6-byte sense commands, just
2081 * reject with ILLEGAL_REQUEST and the caller should take the
2082 * appropriate action
2084 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
2085 rq->errors = ILLEGAL_REQUEST;
2086 return BLKPREP_KILL;
2092 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
2094 if (blk_fs_request(rq))
2095 return ide_cdrom_prep_fs(q, rq);
2096 else if (blk_pc_request(rq))
2097 return ide_cdrom_prep_pc(rq);
2102 struct cd_list_entry {
2103 const char *id_model;
2104 const char *id_firmware;
2105 unsigned int cd_flags;
2108 static const struct cd_list_entry ide_cd_quirks_list[] = {
2109 /* Limit transfer size per interrupt. */
2110 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
2111 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
2112 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
2113 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT },
2114 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
2115 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
2116 IDE_CD_FLAG_PRE_ATAPI12, },
2117 /* Vertos 300, some versions of this drive like to talk BCD. */
2118 { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, },
2119 /* Vertos 600 ESD. */
2120 { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, },
2122 * Sanyo 3 CD changer uses a non-standard command for CD changing
2123 * (by default standard ATAPI support for CD changers is used).
2125 { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD },
2126 { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD },
2127 { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD },
2128 /* Stingray 8X CD-ROM. */
2129 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
2131 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
2132 * mode sense page capabilities size, but older drives break.
2134 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
2135 { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
2136 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
2137 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS },
2139 * Some drives used by Apple don't advertise audio play
2140 * but they do support reading TOC & audio datas.
2142 { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2143 { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2144 { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2145 { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
2149 static unsigned int ide_cd_flags(struct hd_driveid *id)
2151 const struct cd_list_entry *cle = ide_cd_quirks_list;
2153 while (cle->id_model) {
2154 if (strcmp(cle->id_model, id->model) == 0 &&
2155 (cle->id_firmware == NULL ||
2156 strstr(id->fw_rev, cle->id_firmware)))
2157 return cle->cd_flags;
2165 int ide_cdrom_setup (ide_drive_t *drive)
2167 struct cdrom_info *cd = drive->driver_data;
2168 struct cdrom_device_info *cdi = &cd->devinfo;
2169 struct hd_driveid *id = drive->id;
2172 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
2173 blk_queue_dma_alignment(drive->queue, 31);
2174 drive->queue->unplug_delay = (1 * HZ) / 1000;
2175 if (!drive->queue->unplug_delay)
2176 drive->queue->unplug_delay = 1;
2178 drive->special.all = 0;
2180 cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
2183 if ((id->config & 0x0060) == 0x20)
2184 cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
2186 if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
2187 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
2188 cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
2189 IDE_CD_FLAG_TOCADDR_AS_BCD);
2190 else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
2191 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
2192 cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
2193 else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
2194 cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */
2196 nslots = ide_cdrom_probe_capabilities (drive);
2199 * set correct block size
2201 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
2203 if (drive->autotune == IDE_TUNE_DEFAULT ||
2204 drive->autotune == IDE_TUNE_AUTO)
2205 drive->dsc_overlap = (drive->next != drive);
2207 if (ide_cdrom_register(drive, nslots)) {
2208 printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name);
2209 cd->devinfo.handle = NULL;
2212 ide_cdrom_add_settings(drive);
2216 #ifdef CONFIG_IDE_PROC_FS
2218 sector_t ide_cdrom_capacity (ide_drive_t *drive)
2220 unsigned long capacity, sectors_per_frame;
2222 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
2225 return capacity * sectors_per_frame;
2229 static void ide_cd_remove(ide_drive_t *drive)
2231 struct cdrom_info *info = drive->driver_data;
2233 ide_proc_unregister_driver(drive, info->driver);
2235 del_gendisk(info->disk);
2240 static void ide_cd_release(struct kref *kref)
2242 struct cdrom_info *info = to_ide_cd(kref);
2243 struct cdrom_device_info *devinfo = &info->devinfo;
2244 ide_drive_t *drive = info->drive;
2245 struct gendisk *g = info->disk;
2247 kfree(info->buffer);
2249 if (devinfo->handle == drive && unregister_cdrom(devinfo))
2250 printk(KERN_ERR "%s: %s failed to unregister device from the cdrom "
2251 "driver.\n", __FUNCTION__, drive->name);
2252 drive->dsc_overlap = 0;
2253 drive->driver_data = NULL;
2254 blk_queue_prep_rq(drive->queue, NULL);
2255 g->private_data = NULL;
2260 static int ide_cd_probe(ide_drive_t *);
2262 #ifdef CONFIG_IDE_PROC_FS
2263 static int proc_idecd_read_capacity
2264 (char *page, char **start, off_t off, int count, int *eof, void *data)
2266 ide_drive_t *drive = data;
2269 len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive));
2270 PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
2273 static ide_proc_entry_t idecd_proc[] = {
2274 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
2275 { NULL, 0, NULL, NULL }
2279 static ide_driver_t ide_cdrom_driver = {
2281 .owner = THIS_MODULE,
2282 .name = "ide-cdrom",
2283 .bus = &ide_bus_type,
2285 .probe = ide_cd_probe,
2286 .remove = ide_cd_remove,
2287 .version = IDECD_VERSION,
2289 .supports_dsc_overlap = 1,
2290 .do_request = ide_do_rw_cdrom,
2291 .end_request = ide_end_request,
2292 .error = __ide_error,
2293 .abort = __ide_abort,
2294 #ifdef CONFIG_IDE_PROC_FS
2299 static int idecd_open(struct inode * inode, struct file * file)
2301 struct gendisk *disk = inode->i_bdev->bd_disk;
2302 struct cdrom_info *info;
2305 if (!(info = ide_cd_get(disk)))
2309 info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT);
2312 rc = cdrom_open(&info->devinfo, inode, file);
2320 static int idecd_release(struct inode * inode, struct file * file)
2322 struct gendisk *disk = inode->i_bdev->bd_disk;
2323 struct cdrom_info *info = ide_cd_g(disk);
2325 cdrom_release (&info->devinfo, file);
2332 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2334 struct packet_command cgc;
2339 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2342 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2344 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2348 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2349 return cdrom_mode_select(cdi, &cgc);
2352 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2354 struct packet_command cgc;
2359 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2361 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2365 spindown = buffer[11] & 0x0f;
2366 if (copy_to_user((void __user *)arg, &spindown, sizeof (char)))
2371 static int idecd_ioctl (struct inode *inode, struct file *file,
2372 unsigned int cmd, unsigned long arg)
2374 struct block_device *bdev = inode->i_bdev;
2375 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2379 case CDROMSETSPINDOWN:
2380 return idecd_set_spindown(&info->devinfo, arg);
2381 case CDROMGETSPINDOWN:
2382 return idecd_get_spindown(&info->devinfo, arg);
2387 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
2389 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2394 static int idecd_media_changed(struct gendisk *disk)
2396 struct cdrom_info *info = ide_cd_g(disk);
2397 return cdrom_media_changed(&info->devinfo);
2400 static int idecd_revalidate_disk(struct gendisk *disk)
2402 struct cdrom_info *info = ide_cd_g(disk);
2403 struct request_sense sense;
2405 ide_cd_read_toc(info->drive, &sense);
2410 static struct block_device_operations idecd_ops = {
2411 .owner = THIS_MODULE,
2413 .release = idecd_release,
2414 .ioctl = idecd_ioctl,
2415 .media_changed = idecd_media_changed,
2416 .revalidate_disk= idecd_revalidate_disk
2420 static char *ignore = NULL;
2422 module_param(ignore, charp, 0400);
2423 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2425 static int ide_cd_probe(ide_drive_t *drive)
2427 struct cdrom_info *info;
2429 struct request_sense sense;
2431 if (!strstr("ide-cdrom", drive->driver_req))
2433 if (!drive->present)
2435 if (drive->media != ide_cdrom && drive->media != ide_optical)
2437 /* skip drives that we were told to ignore */
2438 if (ignore != NULL) {
2439 if (strstr(ignore, drive->name)) {
2440 printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name);
2445 printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name);
2448 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
2450 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name);
2454 g = alloc_disk(1 << PARTN_BITS);
2458 ide_init_disk(g, drive);
2460 ide_proc_register_driver(drive, &ide_cdrom_driver);
2462 kref_init(&info->kref);
2464 info->drive = drive;
2465 info->driver = &ide_cdrom_driver;
2468 g->private_data = &info->driver;
2470 drive->driver_data = info;
2473 g->driverfs_dev = &drive->gendev;
2474 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2475 if (ide_cdrom_setup(drive)) {
2476 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
2477 ide_cd_release(&info->kref);
2481 ide_cd_read_toc(drive, &sense);
2482 g->fops = &idecd_ops;
2483 g->flags |= GENHD_FL_REMOVABLE;
2493 static void __exit ide_cdrom_exit(void)
2495 driver_unregister(&ide_cdrom_driver.gen_driver);
2498 static int __init ide_cdrom_init(void)
2500 return driver_register(&ide_cdrom_driver.gen_driver);
2503 MODULE_ALIAS("ide:*m-cdrom*");
2504 MODULE_ALIAS("ide-cd");
2505 module_init(ide_cdrom_init);
2506 module_exit(ide_cdrom_exit);
2507 MODULE_LICENSE("GPL");