4 * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
7 * Copyright (C) 2005, 2007-2009 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. ;-)
17 * Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards.
19 * For historical changelog please see:
20 * Documentation/ide/ChangeLog.ide-cd.1994-2004
23 #define DRV_NAME "ide-cd"
24 #define PFX DRV_NAME ": "
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/seq_file.h>
34 #include <linux/slab.h>
35 #include <linux/interrupt.h>
36 #include <linux/errno.h>
37 #include <linux/cdrom.h>
38 #include <linux/ide.h>
39 #include <linux/completion.h>
40 #include <linux/mutex.h>
41 #include <linux/bcd.h>
43 /* For SCSI -> ATAPI command conversion */
44 #include <scsi/scsi.h>
46 #include <linux/irq.h>
48 #include <asm/byteorder.h>
49 #include <linux/uaccess.h>
50 #include <asm/unaligned.h>
54 static DEFINE_MUTEX(ide_cd_mutex);
55 static DEFINE_MUTEX(idecd_ref_mutex);
57 static void ide_cd_release(struct device *);
59 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
61 struct cdrom_info *cd = NULL;
63 mutex_lock(&idecd_ref_mutex);
64 cd = ide_drv_g(disk, cdrom_info);
66 if (ide_device_get(cd->drive))
72 mutex_unlock(&idecd_ref_mutex);
76 static void ide_cd_put(struct cdrom_info *cd)
78 ide_drive_t *drive = cd->drive;
80 mutex_lock(&idecd_ref_mutex);
82 ide_device_put(drive);
83 mutex_unlock(&idecd_ref_mutex);
87 * Generic packet command support and error handling routines.
90 /* Mark that we've seen a media change and invalidate our internal buffers. */
91 static void cdrom_saw_media_change(ide_drive_t *drive)
93 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
94 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
97 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
99 struct request_sense *sense = &drive->sense_data;
102 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
105 ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
107 switch (sense->sense_key) {
109 case RECOVERED_ERROR:
113 * don't care about tray state messages for e.g. capacity
114 * commands or in-progress or becoming ready
116 if (sense->asc == 0x3a || sense->asc == 0x04)
120 case ILLEGAL_REQUEST:
122 * don't log START_STOP unit with LoEj set, since we cannot
123 * reliably check if drive can auto-close
125 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
131 * Make good and sure we've seen this potential media change.
132 * Some drives (i.e. Creative) fail to present the correct sense
133 * key in the error register.
135 cdrom_saw_media_change(drive);
144 static void cdrom_analyze_sense_data(ide_drive_t *drive,
145 struct request *failed_command)
147 struct request_sense *sense = &drive->sense_data;
148 struct cdrom_info *info = drive->driver_data;
149 unsigned long sector;
150 unsigned long bio_sectors;
152 ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
153 sense->error_code, sense->sense_key);
156 ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
157 failed_command->cmd[0]);
159 if (!cdrom_log_sense(drive, failed_command))
163 * If a read toc is executed for a CD-R or CD-RW medium where the first
164 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
167 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
168 if (sense->sense_key == 0x05 && sense->asc == 0x24)
172 if (sense->error_code == 0x70) {
173 switch (sense->sense_key) {
175 case VOLUME_OVERFLOW:
176 case ILLEGAL_REQUEST:
179 if (failed_command == NULL ||
180 failed_command->cmd_type != REQ_TYPE_FS)
182 sector = (sense->information[0] << 24) |
183 (sense->information[1] << 16) |
184 (sense->information[2] << 8) |
185 (sense->information[3]);
187 if (queue_logical_block_size(drive->queue) == 2048)
188 /* device sector size is 2K */
191 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
192 sector &= ~(bio_sectors - 1);
195 * The SCSI specification allows for the value
196 * returned by READ CAPACITY to be up to 75 2K
197 * sectors past the last readable block.
198 * Therefore, if we hit a medium error within the
199 * last 75 2K sectors, we decrease the saved size
202 if (sector < get_capacity(info->disk) &&
203 drive->probed_capacity - sector < 4 * 75)
204 set_capacity(info->disk, sector);
208 ide_cd_log_error(drive->name, failed_command, sense);
211 static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
214 * For REQ_TYPE_SENSE, "rq->special" points to the original
215 * failed request. Also, the sense data should be read
216 * directly from rq which might be different from the original
217 * sense buffer if it got copied during mapping.
219 struct request *failed = (struct request *)rq->special;
220 void *sense = bio_data(rq->bio);
225 * Sense is always read into drive->sense_data.
226 * Copy back if the failed request has its
229 memcpy(failed->sense, sense, 18);
230 failed->sense_len = rq->sense_len;
232 cdrom_analyze_sense_data(drive, failed);
234 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
237 cdrom_analyze_sense_data(drive, NULL);
242 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
243 * while flushing data from cache.
245 * returns: 0 failed (write timeout expired)
248 static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
251 struct cdrom_info *info = drive->driver_data;
254 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
258 if (time_after(jiffies, info->write_timeout))
264 blk_delay_queue(drive->queue, 1);
271 * 0: if the request should be continued.
272 * 1: if the request will be going through error recovery.
273 * 2: if the request should be ended.
275 static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
277 ide_hwif_t *hwif = drive->hwif;
278 struct request *rq = hwif->rq;
279 int err, sense_key, do_end_request = 0;
281 /* get the IDE error register */
282 err = ide_read_error(drive);
283 sense_key = err >> 4;
285 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
287 rq->cmd[0], rq->cmd_type, err, stat);
289 if (rq->cmd_type == REQ_TYPE_SENSE) {
291 * We got an error trying to get sense info from the drive
292 * (probably while trying to recover from a former error).
295 rq->cmd_flags |= REQ_FAILED;
299 /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
300 if (rq->cmd_type == REQ_TYPE_BLOCK_PC && !rq->errors)
301 rq->errors = SAM_STAT_CHECK_CONDITION;
303 if (blk_noretry_request(rq))
308 if (rq->cmd_type == REQ_TYPE_FS && rq_data_dir(rq) == WRITE) {
309 if (ide_cd_breathe(drive, rq))
312 cdrom_saw_media_change(drive);
314 if (rq->cmd_type == REQ_TYPE_FS &&
315 !(rq->cmd_flags & REQ_QUIET))
316 printk(KERN_ERR PFX "%s: tray open\n",
322 cdrom_saw_media_change(drive);
324 if (rq->cmd_type != REQ_TYPE_FS)
328 * Arrange to retry the request but be sure to give up if we've
329 * retried too many times.
331 if (++rq->errors > ERROR_MAX)
334 case ILLEGAL_REQUEST:
336 * Don't print error message for this condition -- SFF8090i
337 * indicates that 5/24/00 is the correct response to a request
338 * to close the tray if the drive doesn't have that capability.
340 * cdrom_log_sense() knows this!
342 if (rq->cmd[0] == GPCMD_START_STOP_UNIT)
347 * No point in retrying after an illegal request or data
350 if (!(rq->cmd_flags & REQ_QUIET))
351 ide_dump_status(drive, "command error", stat);
356 * No point in re-trying a zillion times on a bad sector.
357 * If we got here the error is not correctable.
359 if (!(rq->cmd_flags & REQ_QUIET))
360 ide_dump_status(drive, "media error "
361 "(bad sector)", stat);
365 /* disk appears blank? */
366 if (!(rq->cmd_flags & REQ_QUIET))
367 ide_dump_status(drive, "media error (blank)",
372 if (rq->cmd_type != REQ_TYPE_FS)
374 if (err & ~ATA_ABORTED) {
375 /* go to the default handler for other errors */
376 ide_error(drive, "cdrom_decode_status", stat);
378 } else if (++rq->errors > ERROR_MAX)
379 /* we've racked up too many retries, abort */
383 if (rq->cmd_type != REQ_TYPE_FS) {
384 rq->cmd_flags |= REQ_FAILED;
389 * End a request through request sense analysis when we have sense data.
390 * We need this in order to perform end of media processing.
395 /* if we got a CHECK_CONDITION status, queue a request sense command */
397 return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
401 if (stat & ATA_ERR) {
403 return ide_queue_sense_rq(drive, rq) ? 2 : 1;
408 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
410 struct request *rq = cmd->rq;
412 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
415 * Some of the trailing request sense fields are optional,
416 * and some drives don't send them. Sigh.
418 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
419 cmd->nleft > 0 && cmd->nleft <= 5)
423 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
424 int write, void *buffer, unsigned *bufflen,
425 struct request_sense *sense, int timeout,
426 unsigned int cmd_flags)
428 struct cdrom_info *info = drive->driver_data;
429 struct request_sense local_sense;
431 unsigned int flags = 0;
434 sense = &local_sense;
436 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
438 cmd[0], write, timeout, cmd_flags);
440 /* start of retry loop */
445 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
447 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
448 rq->cmd_type = REQ_TYPE_ATA_PC;
450 rq->cmd_flags |= cmd_flags;
451 rq->timeout = timeout;
453 error = blk_rq_map_kern(drive->queue, rq, buffer,
461 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
464 *bufflen = rq->resid_len;
466 flags = rq->cmd_flags;
470 * FIXME: we should probably abort/retry or something in case of
473 if (flags & REQ_FAILED) {
475 * The request failed. Retry if it was due to a unit
476 * attention status (usually means media was changed).
478 struct request_sense *reqbuf = sense;
480 if (reqbuf->sense_key == UNIT_ATTENTION)
481 cdrom_saw_media_change(drive);
482 else if (reqbuf->sense_key == NOT_READY &&
483 reqbuf->asc == 4 && reqbuf->ascq != 4) {
485 * The drive is in the process of loading
486 * a disk. Retry, but wait a little to give
487 * the drive time to complete the load.
491 /* otherwise, don't retry */
497 /* end of retry loop */
498 } while ((flags & REQ_FAILED) && retries >= 0);
500 /* return an error if the command failed */
501 return (flags & REQ_FAILED) ? -EIO : 0;
505 * returns true if rq has been completed
507 static bool ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
509 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
511 if (cmd->tf_flags & IDE_TFLAG_WRITE)
512 nr_bytes -= cmd->last_xfer_len;
515 ide_complete_rq(drive, 0, nr_bytes);
522 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
524 ide_hwif_t *hwif = drive->hwif;
525 struct ide_cmd *cmd = &hwif->cmd;
526 struct request *rq = hwif->rq;
527 ide_expiry_t *expiry = NULL;
528 int dma_error = 0, dma, thislen, uptodate = 0;
529 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
530 int sense = (rq->cmd_type == REQ_TYPE_SENSE);
531 unsigned int timeout;
535 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
537 /* check for errors */
541 drive->waiting_for_dma = 0;
542 dma_error = hwif->dma_ops->dma_end(drive);
543 ide_dma_unmap_sg(drive, cmd);
545 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
546 write ? "write" : "read");
552 stat = hwif->tp_ops->read_status(hwif);
554 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
555 rc = cdrom_decode_status(drive, stat);
563 /* using dma, transfer is complete now */
566 return ide_error(drive, "dma error", stat);
571 ide_read_bcount_and_ireason(drive, &len, &ireason);
573 thislen = (rq->cmd_type == REQ_TYPE_FS) ? len : cmd->nleft;
577 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
580 /* If DRQ is clear, the command has completed. */
581 if ((stat & ATA_DRQ) == 0) {
582 if (rq->cmd_type == REQ_TYPE_FS) {
584 * If we're not done reading/writing, complain.
585 * Otherwise, complete the command normally.
588 if (cmd->nleft > 0) {
589 printk(KERN_ERR PFX "%s: %s: data underrun "
590 "(%u bytes)\n", drive->name, __func__,
593 rq->cmd_flags |= REQ_FAILED;
596 } else if (rq->cmd_type != REQ_TYPE_BLOCK_PC) {
597 ide_cd_request_sense_fixup(drive, cmd);
599 uptodate = cmd->nleft ? 0 : 1;
602 * suck out the remaining bytes from the drive in an
603 * attempt to complete the data xfer. (see BZ#13399)
605 if (!(stat & ATA_ERR) && !uptodate && thislen) {
606 ide_pio_bytes(drive, cmd, write, thislen);
607 uptodate = cmd->nleft ? 0 : 1;
611 rq->cmd_flags |= REQ_FAILED;
616 rc = ide_check_ireason(drive, rq, len, ireason, write);
620 cmd->last_xfer_len = 0;
622 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
624 rq->cmd_type, ireason);
627 while (thislen > 0) {
628 int blen = min_t(int, thislen, cmd->nleft);
633 ide_pio_bytes(drive, cmd, write, blen);
634 cmd->last_xfer_len += blen;
639 if (sense && write == 0)
640 rq->sense_len += blen;
643 /* pad, if necessary */
645 if (rq->cmd_type != REQ_TYPE_FS || write == 0)
646 ide_pad_transfer(drive, write, len);
648 printk(KERN_ERR PFX "%s: confused, missing data\n",
650 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
654 if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
655 timeout = rq->timeout;
657 timeout = ATAPI_WAIT_PC;
658 if (rq->cmd_type != REQ_TYPE_FS)
659 expiry = ide_cd_expiry;
662 hwif->expiry = expiry;
663 ide_set_handler(drive, cdrom_newpc_intr, timeout);
667 if (rq->cmd_type == REQ_TYPE_BLOCK_PC && rc == 0) {
669 blk_end_request_all(rq, 0);
672 if (sense && uptodate)
673 ide_cd_complete_failed_rq(drive, rq);
675 if (rq->cmd_type == REQ_TYPE_FS) {
679 if (uptodate <= 0 && rq->errors == 0)
683 if (uptodate == 0 && rq->bio)
684 if (ide_cd_error_cmd(drive, cmd))
687 /* make sure it's fully ended */
688 if (rq->cmd_type != REQ_TYPE_FS) {
689 rq->resid_len -= cmd->nbytes - cmd->nleft;
690 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
691 rq->resid_len += cmd->last_xfer_len;
694 ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq));
696 if (sense && rc == 2)
697 ide_error(drive, "request sense failure", stat);
702 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
704 struct cdrom_info *cd = drive->driver_data;
705 struct request_queue *q = drive->queue;
706 int write = rq_data_dir(rq) == WRITE;
707 unsigned short sectors_per_frame =
708 queue_logical_block_size(q) >> SECTOR_BITS;
710 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
711 "secs_per_frame: %u",
712 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
715 /* disk has become write protected */
716 if (get_disk_ro(cd->disk))
720 * We may be retrying this request after an error. Fix up any
721 * weirdness which might be present in the request packet.
723 q->prep_rq_fn(q, rq);
726 /* fs requests *must* be hardware frame aligned */
727 if ((blk_rq_sectors(rq) & (sectors_per_frame - 1)) ||
728 (blk_rq_pos(rq) & (sectors_per_frame - 1)))
731 /* use DMA, if possible */
732 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
735 cd->devinfo.media_written = 1;
737 rq->timeout = ATAPI_WAIT_PC;
742 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
745 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
746 rq->cmd[0], rq->cmd_type);
748 if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
749 rq->cmd_flags |= REQ_QUIET;
751 rq->cmd_flags &= ~REQ_FAILED;
757 struct request_queue *q = drive->queue;
758 char *buf = bio_data(rq->bio);
759 unsigned int alignment;
761 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
764 * check if dma is safe
766 * NOTE! The "len" and "addr" checks should possibly have
769 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
770 if ((unsigned long)buf & alignment
771 || blk_rq_bytes(rq) & q->dma_pad_mask
772 || object_is_on_stack(buf))
777 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
781 int uptodate = 0, nsectors;
783 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
784 rq->cmd[0], (unsigned long long)block);
786 if (drive->debug_mask & IDE_DBG_RQ)
787 blk_dump_rq_flags(rq, "ide_cd_do_request");
789 switch (rq->cmd_type) {
791 if (cdrom_start_rw(drive, rq) == ide_stopped)
795 case REQ_TYPE_BLOCK_PC:
796 case REQ_TYPE_ATA_PC:
798 rq->timeout = ATAPI_WAIT_PC;
800 cdrom_do_block_pc(drive, rq);
802 case REQ_TYPE_SPECIAL:
803 /* right now this can only be a reset... */
810 /* prepare sense request for this command */
811 ide_prep_sense(drive, rq);
813 memset(&cmd, 0, sizeof(cmd));
816 cmd.tf_flags |= IDE_TFLAG_WRITE;
820 if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
821 ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
822 ide_map_sg(drive, &cmd);
825 return ide_issue_pc(drive, &cmd);
827 nsectors = blk_rq_sectors(rq);
832 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
840 * Routines which queue packet commands take as a final argument a pointer to a
841 * request_sense struct. If execution of the command results in an error with a
842 * CHECK CONDITION status, this structure will be filled with the results of the
843 * subsequent request sense command. The pointer can also be NULL, in which case
844 * no sense information is returned.
846 static void msf_from_bcd(struct atapi_msf *msf)
848 msf->minute = bcd2bin(msf->minute);
849 msf->second = bcd2bin(msf->second);
850 msf->frame = bcd2bin(msf->frame);
853 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
855 struct cdrom_info *info = drive->driver_data;
856 struct cdrom_device_info *cdi = &info->devinfo;
857 unsigned char cmd[BLK_MAX_CDB];
859 ide_debug_log(IDE_DBG_FUNC, "enter");
861 memset(cmd, 0, BLK_MAX_CDB);
862 cmd[0] = GPCMD_TEST_UNIT_READY;
865 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
866 * instead of supporting the LOAD_UNLOAD opcode.
868 cmd[7] = cdi->sanyo_slot % 3;
870 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
873 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
874 unsigned long *sectors_per_frame,
875 struct request_sense *sense)
883 unsigned char cmd[BLK_MAX_CDB];
884 unsigned len = sizeof(capbuf);
887 ide_debug_log(IDE_DBG_FUNC, "enter");
889 memset(cmd, 0, BLK_MAX_CDB);
890 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
892 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
898 * Sanity check the given block size, in so far as making
899 * sure the sectors_per_frame we give to the caller won't
900 * end up being bogus.
902 blocklen = be32_to_cpu(capbuf.blocklen);
903 blocklen = (blocklen >> SECTOR_BITS) << SECTOR_BITS;
911 printk_once(KERN_ERR PFX "%s: weird block size %u; "
912 "setting default block size to 2048\n",
913 drive->name, blocklen);
918 *capacity = 1 + be32_to_cpu(capbuf.lba);
919 *sectors_per_frame = blocklen >> SECTOR_BITS;
921 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
922 *capacity, *sectors_per_frame);
927 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
928 int format, char *buf, int buflen,
929 struct request_sense *sense)
931 unsigned char cmd[BLK_MAX_CDB];
933 ide_debug_log(IDE_DBG_FUNC, "enter");
935 memset(cmd, 0, BLK_MAX_CDB);
937 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
939 cmd[7] = (buflen >> 8);
940 cmd[8] = (buflen & 0xff);
941 cmd[9] = (format << 6);
946 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
949 /* Try to read the entire TOC for the disk into our internal buffer. */
950 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
952 int stat, ntracks, i;
953 struct cdrom_info *info = drive->driver_data;
954 struct cdrom_device_info *cdi = &info->devinfo;
955 struct atapi_toc *toc = info->toc;
957 struct atapi_toc_header hdr;
958 struct atapi_toc_entry ent;
961 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
963 ide_debug_log(IDE_DBG_FUNC, "enter");
966 /* try to allocate space */
967 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
969 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
977 * Check to see if the existing data is still valid. If it is,
980 (void) cdrom_check_status(drive, sense);
982 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
985 /* try to get the total cdrom capacity and sector size */
986 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
989 toc->capacity = 0x1fffff;
991 set_capacity(info->disk, toc->capacity * sectors_per_frame);
992 /* save a private copy of the TOC capacity for error handling */
993 drive->probed_capacity = toc->capacity * sectors_per_frame;
995 blk_queue_logical_block_size(drive->queue,
996 sectors_per_frame << SECTOR_BITS);
998 /* first read just the header, so we know how long the TOC is */
999 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1000 sizeof(struct atapi_toc_header), sense);
1004 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1005 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1006 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1009 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1012 if (ntracks > MAX_TRACKS)
1013 ntracks = MAX_TRACKS;
1015 /* now read the whole schmeer */
1016 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1018 sizeof(struct atapi_toc_header) +
1020 sizeof(struct atapi_toc_entry), sense);
1022 if (stat && toc->hdr.first_track > 1) {
1024 * Cds with CDI tracks only don't have any TOC entries, despite
1025 * of this the returned values are
1026 * first_track == last_track = number of CDI tracks + 1,
1027 * so that this case is indistinguishable from the same layout
1028 * plus an additional audio track. If we get an error for the
1029 * regular case, we assume a CDI without additional audio
1030 * tracks. In this case the readable TOC is empty (CDI tracks
1031 * are not included) and only holds the Leadout entry.
1036 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1038 sizeof(struct atapi_toc_header) +
1040 sizeof(struct atapi_toc_entry),
1045 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1046 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1047 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1049 toc->hdr.first_track = CDROM_LEADOUT;
1050 toc->hdr.last_track = CDROM_LEADOUT;
1057 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1059 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1060 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1061 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1064 for (i = 0; i <= ntracks; i++) {
1065 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1066 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1067 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1068 msf_from_bcd(&toc->ent[i].addr.msf);
1070 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1071 toc->ent[i].addr.msf.second,
1072 toc->ent[i].addr.msf.frame);
1075 if (toc->hdr.first_track != CDROM_LEADOUT) {
1076 /* read the multisession information */
1077 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1078 sizeof(ms_tmp), sense);
1082 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1084 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1085 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1086 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1089 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1090 /* re-read multisession information using MSF format */
1091 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1092 sizeof(ms_tmp), sense);
1096 msf_from_bcd(&ms_tmp.ent.addr.msf);
1097 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1098 ms_tmp.ent.addr.msf.second,
1099 ms_tmp.ent.addr.msf.frame);
1102 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1104 /* now try to get the total cdrom capacity */
1105 stat = cdrom_get_last_written(cdi, &last_written);
1106 if (!stat && (last_written > toc->capacity)) {
1107 toc->capacity = last_written;
1108 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1109 drive->probed_capacity = toc->capacity * sectors_per_frame;
1112 /* Remember that we've read this stuff. */
1113 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1118 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1120 struct cdrom_info *info = drive->driver_data;
1121 struct cdrom_device_info *cdi = &info->devinfo;
1122 struct packet_command cgc;
1123 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1125 ide_debug_log(IDE_DBG_FUNC, "enter");
1127 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1128 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1130 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1132 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1133 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1136 } while (--attempts);
1140 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1142 struct cdrom_info *cd = drive->driver_data;
1143 u16 curspeed, maxspeed;
1145 ide_debug_log(IDE_DBG_FUNC, "enter");
1147 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1148 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1149 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1151 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1152 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1155 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1156 curspeed, maxspeed);
1158 cd->current_speed = DIV_ROUND_CLOSEST(curspeed, 176);
1159 cd->max_speed = DIV_ROUND_CLOSEST(maxspeed, 176);
1162 #define IDE_CD_CAPABILITIES \
1163 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1164 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1165 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1166 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1167 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1169 static struct cdrom_device_ops ide_cdrom_dops = {
1170 .open = ide_cdrom_open_real,
1171 .release = ide_cdrom_release_real,
1172 .drive_status = ide_cdrom_drive_status,
1173 .check_events = ide_cdrom_check_events_real,
1174 .tray_move = ide_cdrom_tray_move,
1175 .lock_door = ide_cdrom_lock_door,
1176 .select_speed = ide_cdrom_select_speed,
1177 .get_last_session = ide_cdrom_get_last_session,
1178 .get_mcn = ide_cdrom_get_mcn,
1179 .reset = ide_cdrom_reset,
1180 .audio_ioctl = ide_cdrom_audio_ioctl,
1181 .capability = IDE_CD_CAPABILITIES,
1182 .generic_packet = ide_cdrom_packet,
1185 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1187 struct cdrom_info *info = drive->driver_data;
1188 struct cdrom_device_info *devinfo = &info->devinfo;
1190 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1192 devinfo->ops = &ide_cdrom_dops;
1193 devinfo->speed = info->current_speed;
1194 devinfo->capacity = nslots;
1195 devinfo->handle = drive;
1196 strcpy(devinfo->name, drive->name);
1198 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1199 devinfo->mask |= CDC_SELECT_SPEED;
1201 devinfo->disk = info->disk;
1202 return register_cdrom(devinfo);
1205 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1207 struct cdrom_info *cd = drive->driver_data;
1208 struct cdrom_device_info *cdi = &cd->devinfo;
1209 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1210 mechtype_t mechtype;
1213 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1214 drive->media, drive->atapi_flags);
1216 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1217 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1218 CDC_MO_DRIVE | CDC_RAM);
1220 if (drive->media == ide_optical) {
1221 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1222 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1227 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1228 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1229 cdi->mask &= ~CDC_PLAY_AUDIO;
1234 * We have to cheat a little here. the packet will eventually be queued
1235 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1236 * Since this device hasn't been registered with the Uniform layer yet,
1237 * it can't do this. Same goes for cdi->ops.
1239 cdi->handle = drive;
1240 cdi->ops = &ide_cdrom_dops;
1242 if (ide_cdrom_get_capabilities(drive, buf))
1245 if ((buf[8 + 6] & 0x01) == 0)
1246 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1247 if (buf[8 + 6] & 0x08)
1248 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1249 if (buf[8 + 3] & 0x01)
1250 cdi->mask &= ~CDC_CD_R;
1251 if (buf[8 + 3] & 0x02)
1252 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1253 if (buf[8 + 2] & 0x38)
1254 cdi->mask &= ~CDC_DVD;
1255 if (buf[8 + 3] & 0x20)
1256 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1257 if (buf[8 + 3] & 0x10)
1258 cdi->mask &= ~CDC_DVD_R;
1259 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1260 cdi->mask &= ~CDC_PLAY_AUDIO;
1262 mechtype = buf[8 + 6] >> 5;
1263 if (mechtype == mechtype_caddy ||
1264 mechtype == mechtype_popup ||
1265 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1266 cdi->mask |= CDC_CLOSE_TRAY;
1268 if (cdi->sanyo_slot > 0) {
1269 cdi->mask &= ~CDC_SELECT_DISC;
1271 } else if (mechtype == mechtype_individual_changer ||
1272 mechtype == mechtype_cartridge_changer) {
1273 nslots = cdrom_number_of_slots(cdi);
1275 cdi->mask &= ~CDC_SELECT_DISC;
1278 ide_cdrom_update_speed(drive, buf);
1280 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1282 /* don't print speed if the drive reported 0 */
1284 printk(KERN_CONT " %dX", cd->max_speed);
1286 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1288 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1289 printk(KERN_CONT " DVD%s%s",
1290 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1291 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1293 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1294 printk(KERN_CONT " CD%s%s",
1295 (cdi->mask & CDC_CD_R) ? "" : "-R",
1296 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1298 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1299 printk(KERN_CONT " changer w/%d slots", nslots);
1301 printk(KERN_CONT " drive");
1303 printk(KERN_CONT ", %dkB Cache\n",
1304 be16_to_cpup((__be16 *)&buf[8 + 12]));
1309 /* standard prep_rq_fn that builds 10 byte cmds */
1310 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1312 int hard_sect = queue_logical_block_size(q);
1313 long block = (long)blk_rq_pos(rq) / (hard_sect >> 9);
1314 unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9);
1316 memset(rq->cmd, 0, BLK_MAX_CDB);
1318 if (rq_data_dir(rq) == READ)
1319 rq->cmd[0] = GPCMD_READ_10;
1321 rq->cmd[0] = GPCMD_WRITE_10;
1326 rq->cmd[2] = (block >> 24) & 0xff;
1327 rq->cmd[3] = (block >> 16) & 0xff;
1328 rq->cmd[4] = (block >> 8) & 0xff;
1329 rq->cmd[5] = block & 0xff;
1332 * and transfer length
1334 rq->cmd[7] = (blocks >> 8) & 0xff;
1335 rq->cmd[8] = blocks & 0xff;
1341 * Most of the SCSI commands are supported directly by ATAPI devices.
1342 * This transform handles the few exceptions.
1344 static int ide_cdrom_prep_pc(struct request *rq)
1348 /* transform 6-byte read/write commands to the 10-byte version */
1349 if (c[0] == READ_6 || c[0] == WRITE_6) {
1356 c[0] += (READ_10 - READ_6);
1362 * it's silly to pretend we understand 6-byte sense commands, just
1363 * reject with ILLEGAL_REQUEST and the caller should take the
1364 * appropriate action
1366 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1367 rq->errors = ILLEGAL_REQUEST;
1368 return BLKPREP_KILL;
1374 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1376 if (rq->cmd_type == REQ_TYPE_FS)
1377 return ide_cdrom_prep_fs(q, rq);
1378 else if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
1379 return ide_cdrom_prep_pc(rq);
1384 struct cd_list_entry {
1385 const char *id_model;
1386 const char *id_firmware;
1387 unsigned int cd_flags;
1390 #ifdef CONFIG_IDE_PROC_FS
1391 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1393 unsigned long capacity, sectors_per_frame;
1395 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1398 return capacity * sectors_per_frame;
1401 static int idecd_capacity_proc_show(struct seq_file *m, void *v)
1403 ide_drive_t *drive = m->private;
1405 seq_printf(m, "%llu\n", (long long)ide_cdrom_capacity(drive));
1409 static int idecd_capacity_proc_open(struct inode *inode, struct file *file)
1411 return single_open(file, idecd_capacity_proc_show, PDE(inode)->data);
1414 static const struct file_operations idecd_capacity_proc_fops = {
1415 .owner = THIS_MODULE,
1416 .open = idecd_capacity_proc_open,
1418 .llseek = seq_lseek,
1419 .release = single_release,
1422 static ide_proc_entry_t idecd_proc[] = {
1423 { "capacity", S_IFREG|S_IRUGO, &idecd_capacity_proc_fops },
1427 static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1432 static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1438 static const struct cd_list_entry ide_cd_quirks_list[] = {
1439 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1440 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1441 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1442 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1443 IDE_AFLAG_PRE_ATAPI12, },
1444 /* Vertos 300, some versions of this drive like to talk BCD. */
1445 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1446 /* Vertos 600 ESD. */
1447 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1449 * Sanyo 3 CD changer uses a non-standard command for CD changing
1450 * (by default standard ATAPI support for CD changers is used).
1452 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1453 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1454 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1455 /* Stingray 8X CD-ROM. */
1456 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1458 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1459 * mode sense page capabilities size, but older drives break.
1461 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1462 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1463 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1464 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1466 * Some drives used by Apple don't advertise audio play
1467 * but they do support reading TOC & audio datas.
1469 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1470 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1471 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1472 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1473 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1474 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1475 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1476 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1480 static unsigned int ide_cd_flags(u16 *id)
1482 const struct cd_list_entry *cle = ide_cd_quirks_list;
1484 while (cle->id_model) {
1485 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1486 (cle->id_firmware == NULL ||
1487 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1488 return cle->cd_flags;
1495 static int ide_cdrom_setup(ide_drive_t *drive)
1497 struct cdrom_info *cd = drive->driver_data;
1498 struct cdrom_device_info *cdi = &cd->devinfo;
1499 struct request_queue *q = drive->queue;
1500 u16 *id = drive->id;
1501 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1504 ide_debug_log(IDE_DBG_PROBE, "enter");
1506 blk_queue_prep_rq(q, ide_cdrom_prep_fn);
1507 blk_queue_dma_alignment(q, 31);
1508 blk_queue_update_dma_pad(q, 15);
1510 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1511 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1513 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1514 fw_rev[4] == '1' && fw_rev[6] <= '2')
1515 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1516 IDE_AFLAG_TOCADDR_AS_BCD);
1517 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1518 fw_rev[4] == '1' && fw_rev[6] <= '2')
1519 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1520 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1521 /* 3 => use CD in slot 0 */
1522 cdi->sanyo_slot = 3;
1524 nslots = ide_cdrom_probe_capabilities(drive);
1526 blk_queue_logical_block_size(q, CD_FRAMESIZE);
1528 if (ide_cdrom_register(drive, nslots)) {
1529 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1530 " cdrom driver.\n", drive->name, __func__);
1531 cd->devinfo.handle = NULL;
1535 ide_proc_register_driver(drive, cd->driver);
1539 static void ide_cd_remove(ide_drive_t *drive)
1541 struct cdrom_info *info = drive->driver_data;
1543 ide_debug_log(IDE_DBG_FUNC, "enter");
1545 ide_proc_unregister_driver(drive, info->driver);
1546 device_del(&info->dev);
1547 del_gendisk(info->disk);
1549 mutex_lock(&idecd_ref_mutex);
1550 put_device(&info->dev);
1551 mutex_unlock(&idecd_ref_mutex);
1554 static void ide_cd_release(struct device *dev)
1556 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1557 struct cdrom_device_info *devinfo = &info->devinfo;
1558 ide_drive_t *drive = info->drive;
1559 struct gendisk *g = info->disk;
1561 ide_debug_log(IDE_DBG_FUNC, "enter");
1564 if (devinfo->handle == drive)
1565 unregister_cdrom(devinfo);
1566 drive->driver_data = NULL;
1567 blk_queue_prep_rq(drive->queue, NULL);
1568 g->private_data = NULL;
1573 static int ide_cd_probe(ide_drive_t *);
1575 static struct ide_driver ide_cdrom_driver = {
1577 .owner = THIS_MODULE,
1578 .name = "ide-cdrom",
1579 .bus = &ide_bus_type,
1581 .probe = ide_cd_probe,
1582 .remove = ide_cd_remove,
1583 .version = IDECD_VERSION,
1584 .do_request = ide_cd_do_request,
1585 #ifdef CONFIG_IDE_PROC_FS
1586 .proc_entries = ide_cd_proc_entries,
1587 .proc_devsets = ide_cd_proc_devsets,
1591 static int idecd_open(struct block_device *bdev, fmode_t mode)
1593 struct cdrom_info *info;
1596 mutex_lock(&ide_cd_mutex);
1597 info = ide_cd_get(bdev->bd_disk);
1601 rc = cdrom_open(&info->devinfo, bdev, mode);
1605 mutex_unlock(&ide_cd_mutex);
1609 static int idecd_release(struct gendisk *disk, fmode_t mode)
1611 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1613 mutex_lock(&ide_cd_mutex);
1614 cdrom_release(&info->devinfo, mode);
1617 mutex_unlock(&ide_cd_mutex);
1622 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1624 struct packet_command cgc;
1629 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1632 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1634 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1638 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1639 return cdrom_mode_select(cdi, &cgc);
1642 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1644 struct packet_command cgc;
1649 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1651 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1655 spindown = buffer[11] & 0x0f;
1656 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1661 static int idecd_locked_ioctl(struct block_device *bdev, fmode_t mode,
1662 unsigned int cmd, unsigned long arg)
1664 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1668 case CDROMSETSPINDOWN:
1669 return idecd_set_spindown(&info->devinfo, arg);
1670 case CDROMGETSPINDOWN:
1671 return idecd_get_spindown(&info->devinfo, arg);
1676 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1678 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1683 static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1684 unsigned int cmd, unsigned long arg)
1688 mutex_lock(&ide_cd_mutex);
1689 ret = idecd_locked_ioctl(bdev, mode, cmd, arg);
1690 mutex_unlock(&ide_cd_mutex);
1696 static unsigned int idecd_check_events(struct gendisk *disk,
1697 unsigned int clearing)
1699 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1700 return cdrom_check_events(&info->devinfo, clearing);
1703 static int idecd_revalidate_disk(struct gendisk *disk)
1705 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1706 struct request_sense sense;
1708 ide_cd_read_toc(info->drive, &sense);
1713 static const struct block_device_operations idecd_ops = {
1714 .owner = THIS_MODULE,
1716 .release = idecd_release,
1717 .ioctl = idecd_ioctl,
1718 .check_events = idecd_check_events,
1719 .revalidate_disk = idecd_revalidate_disk
1722 /* module options */
1723 static unsigned long debug_mask;
1724 module_param(debug_mask, ulong, 0644);
1726 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1728 static int ide_cd_probe(ide_drive_t *drive)
1730 struct cdrom_info *info;
1732 struct request_sense sense;
1734 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1735 drive->driver_req, drive->media);
1737 if (!strstr("ide-cdrom", drive->driver_req))
1740 if (drive->media != ide_cdrom && drive->media != ide_optical)
1743 drive->debug_mask = debug_mask;
1744 drive->irq_handler = cdrom_newpc_intr;
1746 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1748 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1753 g = alloc_disk(1 << PARTN_BITS);
1757 ide_init_disk(g, drive);
1759 info->dev.parent = &drive->gendev;
1760 info->dev.release = ide_cd_release;
1761 dev_set_name(&info->dev, dev_name(&drive->gendev));
1763 if (device_register(&info->dev))
1766 info->drive = drive;
1767 info->driver = &ide_cdrom_driver;
1770 g->private_data = &info->driver;
1772 drive->driver_data = info;
1775 g->driverfs_dev = &drive->gendev;
1776 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1777 if (ide_cdrom_setup(drive)) {
1778 put_device(&info->dev);
1782 ide_cd_read_toc(drive, &sense);
1783 g->fops = &idecd_ops;
1784 g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
1785 g->events = DISK_EVENT_MEDIA_CHANGE;
1797 static void __exit ide_cdrom_exit(void)
1799 driver_unregister(&ide_cdrom_driver.gen_driver);
1802 static int __init ide_cdrom_init(void)
1804 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
1805 return driver_register(&ide_cdrom_driver.gen_driver);
1808 MODULE_ALIAS("ide:*m-cdrom*");
1809 MODULE_ALIAS("ide-cd");
1810 module_init(ide_cdrom_init);
1811 module_exit(ide_cdrom_exit);
1812 MODULE_LICENSE("GPL");