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/slab.h>
34 #include <linux/interrupt.h>
35 #include <linux/errno.h>
36 #include <linux/cdrom.h>
37 #include <linux/ide.h>
38 #include <linux/completion.h>
39 #include <linux/mutex.h>
40 #include <linux/bcd.h>
42 /* For SCSI -> ATAPI command conversion */
43 #include <scsi/scsi.h>
45 #include <linux/irq.h>
47 #include <asm/byteorder.h>
48 #include <linux/uaccess.h>
49 #include <asm/unaligned.h>
53 static DEFINE_MUTEX(idecd_ref_mutex);
55 static void ide_cd_release(struct device *);
57 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
59 struct cdrom_info *cd = NULL;
61 mutex_lock(&idecd_ref_mutex);
62 cd = ide_drv_g(disk, cdrom_info);
64 if (ide_device_get(cd->drive))
70 mutex_unlock(&idecd_ref_mutex);
74 static void ide_cd_put(struct cdrom_info *cd)
76 ide_drive_t *drive = cd->drive;
78 mutex_lock(&idecd_ref_mutex);
80 ide_device_put(drive);
81 mutex_unlock(&idecd_ref_mutex);
85 * Generic packet command support and error handling routines.
88 /* Mark that we've seen a media change and invalidate our internal buffers. */
89 static void cdrom_saw_media_change(ide_drive_t *drive)
91 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
92 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
95 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
96 struct request_sense *sense)
100 ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
102 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
105 switch (sense->sense_key) {
107 case RECOVERED_ERROR:
111 * don't care about tray state messages for e.g. capacity
112 * commands or in-progress or becoming ready
114 if (sense->asc == 0x3a || sense->asc == 0x04)
118 case ILLEGAL_REQUEST:
120 * don't log START_STOP unit with LoEj set, since we cannot
121 * reliably check if drive can auto-close
123 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
129 * Make good and sure we've seen this potential media change.
130 * Some drives (i.e. Creative) fail to present the correct sense
131 * key in the error register.
133 cdrom_saw_media_change(drive);
142 static void cdrom_analyze_sense_data(ide_drive_t *drive,
143 struct request *failed_command,
144 struct request_sense *sense)
146 unsigned long sector;
147 unsigned long bio_sectors;
148 struct cdrom_info *info = drive->driver_data;
150 ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
151 sense->error_code, sense->sense_key);
154 ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
155 failed_command->cmd[0]);
157 if (!cdrom_log_sense(drive, failed_command, sense))
161 * If a read toc is executed for a CD-R or CD-RW medium where the first
162 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
165 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
166 if (sense->sense_key == 0x05 && sense->asc == 0x24)
170 if (sense->error_code == 0x70) {
171 switch (sense->sense_key) {
173 case VOLUME_OVERFLOW:
174 case ILLEGAL_REQUEST:
177 if (failed_command == NULL ||
178 !blk_fs_request(failed_command))
180 sector = (sense->information[0] << 24) |
181 (sense->information[1] << 16) |
182 (sense->information[2] << 8) |
183 (sense->information[3]);
185 if (drive->queue->hardsect_size == 2048)
186 /* device sector size is 2K */
189 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
190 sector &= ~(bio_sectors - 1);
193 * The SCSI specification allows for the value
194 * returned by READ CAPACITY to be up to 75 2K
195 * sectors past the last readable block.
196 * Therefore, if we hit a medium error within the
197 * last 75 2K sectors, we decrease the saved size
200 if (sector < get_capacity(info->disk) &&
201 drive->probed_capacity - sector < 4 * 75)
202 set_capacity(info->disk, sector);
206 ide_cd_log_error(drive->name, failed_command, sense);
209 static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
212 * For REQ_TYPE_SENSE, "rq->special" points to the original
213 * failed request. Also, the sense data should be read
214 * directly from rq which might be different from the original
215 * sense buffer if it got copied during mapping.
217 struct request *failed = (struct request *)rq->special;
218 void *sense = bio_data(rq->bio);
223 * Sense is always read into drive->sense_data.
224 * Copy back if the failed request has its
227 memcpy(failed->sense, sense, 18);
228 sense = failed->sense;
229 failed->sense_len = rq->sense_len;
231 cdrom_analyze_sense_data(drive, failed, sense);
233 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
236 cdrom_analyze_sense_data(drive, NULL, sense);
241 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
242 * while flushing data from cache.
244 * returns: 0 failed (write timeout expired)
247 static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
250 struct cdrom_info *info = drive->driver_data;
253 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
257 if (time_after(jiffies, info->write_timeout))
260 struct request_queue *q = drive->queue;
264 * take a breather relying on the unplug timer to kick us again
267 spin_lock_irqsave(q->queue_lock, flags);
269 spin_unlock_irqrestore(q->queue_lock, flags);
277 * 0: if the request should be continued.
278 * 1: if the request will be going through error recovery.
279 * 2: if the request should be ended.
281 static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
283 ide_hwif_t *hwif = drive->hwif;
284 struct request *rq = hwif->rq;
285 int err, sense_key, do_end_request = 0;
286 u8 quiet = rq->cmd_flags & REQ_QUIET;
288 /* get the IDE error register */
289 err = ide_read_error(drive);
290 sense_key = err >> 4;
292 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
294 rq->cmd[0], rq->cmd_type, err, stat);
296 if (blk_sense_request(rq)) {
298 * We got an error trying to get sense info from the drive
299 * (probably while trying to recover from a former error).
302 rq->cmd_flags |= REQ_FAILED;
306 /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
307 if (blk_pc_request(rq) && !rq->errors)
308 rq->errors = SAM_STAT_CHECK_CONDITION;
310 if (blk_noretry_request(rq))
315 if (blk_fs_request(rq) && rq_data_dir(rq) == WRITE) {
316 if (ide_cd_breathe(drive, rq))
319 cdrom_saw_media_change(drive);
321 if (blk_fs_request(rq) && !quiet)
322 printk(KERN_ERR PFX "%s: tray open\n",
328 cdrom_saw_media_change(drive);
330 if (blk_fs_request(rq) == 0)
334 * Arrange to retry the request but be sure to give up if we've
335 * retried too many times.
337 if (++rq->errors > ERROR_MAX)
340 case ILLEGAL_REQUEST:
342 * Don't print error message for this condition -- SFF8090i
343 * indicates that 5/24/00 is the correct response to a request
344 * to close the tray if the drive doesn't have that capability.
346 * cdrom_log_sense() knows this!
348 if (rq->cmd[0] == GPCMD_START_STOP_UNIT)
353 * No point in retrying after an illegal request or data
357 ide_dump_status(drive, "command error", stat);
362 * No point in re-trying a zillion times on a bad sector.
363 * If we got here the error is not correctable.
366 ide_dump_status(drive, "media error "
367 "(bad sector)", stat);
371 /* disk appears blank? */
373 ide_dump_status(drive, "media error (blank)",
378 if (blk_fs_request(rq) == 0)
380 if (err & ~ATA_ABORTED) {
381 /* go to the default handler for other errors */
382 ide_error(drive, "cdrom_decode_status", stat);
384 } else if (++rq->errors > ERROR_MAX)
385 /* we've racked up too many retries, abort */
389 if (blk_fs_request(rq) == 0) {
390 rq->cmd_flags |= REQ_FAILED;
395 * End a request through request sense analysis when we have sense data.
396 * We need this in order to perform end of media processing.
401 /* if we got a CHECK_CONDITION status, queue a request sense command */
403 return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
407 if (stat & ATA_ERR) {
409 return ide_queue_sense_rq(drive, rq) ? 2 : 1;
415 * Check the contents of the interrupt reason register from the cdrom
416 * and attempt to recover if there are problems. Returns 0 if everything's
417 * ok; nonzero if the request has been terminated.
419 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
420 int len, int ireason, int rw)
422 ide_hwif_t *hwif = drive->hwif;
424 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
427 * ireason == 0: the drive wants to receive data from us
428 * ireason == 2: the drive is expecting to transfer data to us
430 if (ireason == (!rw << 1))
432 else if (ireason == (rw << 1)) {
435 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
436 drive->name, __func__);
438 ide_pad_transfer(drive, rw, len);
439 } else if (rw == 0 && ireason == 1) {
441 * Some drives (ASUS) seem to tell us that status info is
442 * available. Just get it and ignore.
444 (void)hwif->tp_ops->read_status(hwif);
447 /* drive wants a command packet, or invalid ireason... */
448 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
449 drive->name, __func__, ireason);
452 if (rq->cmd_type == REQ_TYPE_ATA_PC)
453 rq->cmd_flags |= REQ_FAILED;
458 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
460 struct request *rq = cmd->rq;
462 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
465 * Some of the trailing request sense fields are optional,
466 * and some drives don't send them. Sigh.
468 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
469 cmd->nleft > 0 && cmd->nleft <= 5)
473 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
474 int write, void *buffer, unsigned *bufflen,
475 struct request_sense *sense, int timeout,
476 unsigned int cmd_flags)
478 struct cdrom_info *info = drive->driver_data;
479 struct request_sense local_sense;
481 unsigned int flags = 0;
484 sense = &local_sense;
486 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
488 cmd[0], write, timeout, cmd_flags);
490 /* start of retry loop */
495 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
497 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
498 rq->cmd_type = REQ_TYPE_ATA_PC;
500 rq->cmd_flags |= cmd_flags;
501 rq->timeout = timeout;
503 error = blk_rq_map_kern(drive->queue, rq, buffer,
511 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
514 *bufflen = rq->resid_len;
516 flags = rq->cmd_flags;
520 * FIXME: we should probably abort/retry or something in case of
523 if (flags & REQ_FAILED) {
525 * The request failed. Retry if it was due to a unit
526 * attention status (usually means media was changed).
528 struct request_sense *reqbuf = sense;
530 if (reqbuf->sense_key == UNIT_ATTENTION)
531 cdrom_saw_media_change(drive);
532 else if (reqbuf->sense_key == NOT_READY &&
533 reqbuf->asc == 4 && reqbuf->ascq != 4) {
535 * The drive is in the process of loading
536 * a disk. Retry, but wait a little to give
537 * the drive time to complete the load.
541 /* otherwise, don't retry */
547 /* end of retry loop */
548 } while ((flags & REQ_FAILED) && retries >= 0);
550 /* return an error if the command failed */
551 return (flags & REQ_FAILED) ? -EIO : 0;
554 static void ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
556 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
558 if (cmd->tf_flags & IDE_TFLAG_WRITE)
559 nr_bytes -= cmd->last_xfer_len;
562 ide_complete_rq(drive, 0, nr_bytes);
565 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
567 ide_hwif_t *hwif = drive->hwif;
568 struct ide_cmd *cmd = &hwif->cmd;
569 struct request *rq = hwif->rq;
570 ide_expiry_t *expiry = NULL;
571 int dma_error = 0, dma, thislen, uptodate = 0;
572 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
573 int sense = blk_sense_request(rq);
574 unsigned int timeout;
578 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
580 /* check for errors */
584 drive->waiting_for_dma = 0;
585 dma_error = hwif->dma_ops->dma_end(drive);
586 ide_dma_unmap_sg(drive, cmd);
588 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
589 write ? "write" : "read");
595 stat = hwif->tp_ops->read_status(hwif);
597 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
598 rc = cdrom_decode_status(drive, stat);
606 /* using dma, transfer is complete now */
609 return ide_error(drive, "dma error", stat);
614 ide_read_bcount_and_ireason(drive, &len, &ireason);
616 thislen = blk_fs_request(rq) ? len : cmd->nleft;
620 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
623 /* If DRQ is clear, the command has completed. */
624 if ((stat & ATA_DRQ) == 0) {
625 if (blk_fs_request(rq)) {
627 * If we're not done reading/writing, complain.
628 * Otherwise, complete the command normally.
631 if (cmd->nleft > 0) {
632 printk(KERN_ERR PFX "%s: %s: data underrun "
633 "(%u bytes)\n", drive->name, __func__,
636 rq->cmd_flags |= REQ_FAILED;
639 } else if (!blk_pc_request(rq)) {
640 ide_cd_request_sense_fixup(drive, cmd);
641 /* complain if we still have data left to transfer */
642 uptodate = cmd->nleft ? 0 : 1;
644 rq->cmd_flags |= REQ_FAILED;
649 /* check which way to transfer data */
650 rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
654 cmd->last_xfer_len = 0;
656 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
658 rq->cmd_type, ireason);
661 while (thislen > 0) {
662 int blen = min_t(int, thislen, cmd->nleft);
667 ide_pio_bytes(drive, cmd, write, blen);
668 cmd->last_xfer_len += blen;
673 if (sense && write == 0)
674 rq->sense_len += blen;
677 /* pad, if necessary */
679 if (blk_fs_request(rq) == 0 || write == 0)
680 ide_pad_transfer(drive, write, len);
682 printk(KERN_ERR PFX "%s: confused, missing data\n",
684 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
688 if (blk_pc_request(rq)) {
689 timeout = rq->timeout;
691 timeout = ATAPI_WAIT_PC;
692 if (!blk_fs_request(rq))
693 expiry = ide_cd_expiry;
696 hwif->expiry = expiry;
697 ide_set_handler(drive, cdrom_newpc_intr, timeout);
701 if (blk_pc_request(rq) && rc == 0) {
702 blk_end_request_all(rq, 0);
705 if (sense && uptodate)
706 ide_cd_complete_failed_rq(drive, rq);
708 if (blk_fs_request(rq)) {
712 if (uptodate <= 0 && rq->errors == 0)
717 ide_cd_error_cmd(drive, cmd);
719 /* make sure it's fully ended */
720 if (blk_fs_request(rq) == 0) {
721 rq->resid_len = blk_rq_bytes(rq) -
722 (cmd->nbytes - cmd->nleft);
723 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
724 rq->resid_len += cmd->last_xfer_len;
727 ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq));
729 if (sense && rc == 2)
730 ide_error(drive, "request sense failure", stat);
735 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
737 struct cdrom_info *cd = drive->driver_data;
738 struct request_queue *q = drive->queue;
739 int write = rq_data_dir(rq) == WRITE;
740 unsigned short sectors_per_frame =
741 queue_hardsect_size(q) >> SECTOR_BITS;
743 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
744 "secs_per_frame: %u",
745 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
748 /* disk has become write protected */
749 if (get_disk_ro(cd->disk))
753 * We may be retrying this request after an error. Fix up any
754 * weirdness which might be present in the request packet.
756 q->prep_rq_fn(q, rq);
759 /* fs requests *must* be hardware frame aligned */
760 if ((blk_rq_sectors(rq) & (sectors_per_frame - 1)) ||
761 (blk_rq_pos(rq) & (sectors_per_frame - 1)))
764 /* use DMA, if possible */
765 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
768 cd->devinfo.media_written = 1;
770 rq->timeout = ATAPI_WAIT_PC;
775 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
778 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
779 rq->cmd[0], rq->cmd_type);
781 if (blk_pc_request(rq))
782 rq->cmd_flags |= REQ_QUIET;
784 rq->cmd_flags &= ~REQ_FAILED;
790 struct request_queue *q = drive->queue;
791 char *buf = bio_data(rq->bio);
792 unsigned int alignment;
794 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
797 * check if dma is safe
799 * NOTE! The "len" and "addr" checks should possibly have
802 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
803 if ((unsigned long)buf & alignment
804 || blk_rq_bytes(rq) & q->dma_pad_mask
805 || object_is_on_stack(buf))
810 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
814 int uptodate = 0, nsectors;
816 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
817 rq->cmd[0], (unsigned long long)block);
819 if (drive->debug_mask & IDE_DBG_RQ)
820 blk_dump_rq_flags(rq, "ide_cd_do_request");
822 if (blk_fs_request(rq)) {
823 if (cdrom_start_rw(drive, rq) == ide_stopped)
825 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
826 rq->cmd_type == REQ_TYPE_ATA_PC) {
828 rq->timeout = ATAPI_WAIT_PC;
830 cdrom_do_block_pc(drive, rq);
831 } else if (blk_special_request(rq)) {
832 /* right now this can only be a reset... */
836 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
842 /* prepare sense request for this command */
843 ide_prep_sense(drive, rq);
845 memset(&cmd, 0, sizeof(cmd));
848 cmd.tf_flags |= IDE_TFLAG_WRITE;
852 if (blk_fs_request(rq) || blk_rq_bytes(rq)) {
853 ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
854 ide_map_sg(drive, &cmd);
857 return ide_issue_pc(drive, &cmd);
859 nsectors = blk_rq_sectors(rq);
864 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
872 * Routines which queue packet commands take as a final argument a pointer to a
873 * request_sense struct. If execution of the command results in an error with a
874 * CHECK CONDITION status, this structure will be filled with the results of the
875 * subsequent request sense command. The pointer can also be NULL, in which case
876 * no sense information is returned.
878 static void msf_from_bcd(struct atapi_msf *msf)
880 msf->minute = bcd2bin(msf->minute);
881 msf->second = bcd2bin(msf->second);
882 msf->frame = bcd2bin(msf->frame);
885 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
887 struct cdrom_info *info = drive->driver_data;
888 struct cdrom_device_info *cdi = &info->devinfo;
889 unsigned char cmd[BLK_MAX_CDB];
891 ide_debug_log(IDE_DBG_FUNC, "enter");
893 memset(cmd, 0, BLK_MAX_CDB);
894 cmd[0] = GPCMD_TEST_UNIT_READY;
897 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
898 * instead of supporting the LOAD_UNLOAD opcode.
900 cmd[7] = cdi->sanyo_slot % 3;
902 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
905 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
906 unsigned long *sectors_per_frame,
907 struct request_sense *sense)
915 unsigned char cmd[BLK_MAX_CDB];
916 unsigned len = sizeof(capbuf);
919 ide_debug_log(IDE_DBG_FUNC, "enter");
921 memset(cmd, 0, BLK_MAX_CDB);
922 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
924 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
930 * Sanity check the given block size
932 blocklen = be32_to_cpu(capbuf.blocklen);
940 printk(KERN_ERR PFX "%s: weird block size %u\n",
941 drive->name, blocklen);
942 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
948 *capacity = 1 + be32_to_cpu(capbuf.lba);
949 *sectors_per_frame = blocklen >> SECTOR_BITS;
951 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
952 *capacity, *sectors_per_frame);
957 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
958 int format, char *buf, int buflen,
959 struct request_sense *sense)
961 unsigned char cmd[BLK_MAX_CDB];
963 ide_debug_log(IDE_DBG_FUNC, "enter");
965 memset(cmd, 0, BLK_MAX_CDB);
967 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
969 cmd[7] = (buflen >> 8);
970 cmd[8] = (buflen & 0xff);
971 cmd[9] = (format << 6);
976 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
979 /* Try to read the entire TOC for the disk into our internal buffer. */
980 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
982 int stat, ntracks, i;
983 struct cdrom_info *info = drive->driver_data;
984 struct cdrom_device_info *cdi = &info->devinfo;
985 struct atapi_toc *toc = info->toc;
987 struct atapi_toc_header hdr;
988 struct atapi_toc_entry ent;
991 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
993 ide_debug_log(IDE_DBG_FUNC, "enter");
996 /* try to allocate space */
997 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
999 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
1007 * Check to see if the existing data is still valid. If it is,
1010 (void) cdrom_check_status(drive, sense);
1012 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1015 /* try to get the total cdrom capacity and sector size */
1016 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1019 toc->capacity = 0x1fffff;
1021 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1022 /* save a private copy of the TOC capacity for error handling */
1023 drive->probed_capacity = toc->capacity * sectors_per_frame;
1025 blk_queue_hardsect_size(drive->queue,
1026 sectors_per_frame << SECTOR_BITS);
1028 /* first read just the header, so we know how long the TOC is */
1029 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1030 sizeof(struct atapi_toc_header), sense);
1034 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1035 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1036 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1039 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1042 if (ntracks > MAX_TRACKS)
1043 ntracks = MAX_TRACKS;
1045 /* now read the whole schmeer */
1046 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1048 sizeof(struct atapi_toc_header) +
1050 sizeof(struct atapi_toc_entry), sense);
1052 if (stat && toc->hdr.first_track > 1) {
1054 * Cds with CDI tracks only don't have any TOC entries, despite
1055 * of this the returned values are
1056 * first_track == last_track = number of CDI tracks + 1,
1057 * so that this case is indistinguishable from the same layout
1058 * plus an additional audio track. If we get an error for the
1059 * regular case, we assume a CDI without additional audio
1060 * tracks. In this case the readable TOC is empty (CDI tracks
1061 * are not included) and only holds the Leadout entry.
1066 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1068 sizeof(struct atapi_toc_header) +
1070 sizeof(struct atapi_toc_entry),
1075 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1076 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1077 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1079 toc->hdr.first_track = CDROM_LEADOUT;
1080 toc->hdr.last_track = CDROM_LEADOUT;
1087 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1089 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1090 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1091 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1094 for (i = 0; i <= ntracks; i++) {
1095 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1096 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1097 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1098 msf_from_bcd(&toc->ent[i].addr.msf);
1100 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1101 toc->ent[i].addr.msf.second,
1102 toc->ent[i].addr.msf.frame);
1105 if (toc->hdr.first_track != CDROM_LEADOUT) {
1106 /* read the multisession information */
1107 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1108 sizeof(ms_tmp), sense);
1112 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1114 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1115 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1116 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1119 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1120 /* re-read multisession information using MSF format */
1121 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1122 sizeof(ms_tmp), sense);
1126 msf_from_bcd(&ms_tmp.ent.addr.msf);
1127 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1128 ms_tmp.ent.addr.msf.second,
1129 ms_tmp.ent.addr.msf.frame);
1132 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1134 /* now try to get the total cdrom capacity */
1135 stat = cdrom_get_last_written(cdi, &last_written);
1136 if (!stat && (last_written > toc->capacity)) {
1137 toc->capacity = last_written;
1138 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1139 drive->probed_capacity = toc->capacity * sectors_per_frame;
1142 /* Remember that we've read this stuff. */
1143 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1148 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1150 struct cdrom_info *info = drive->driver_data;
1151 struct cdrom_device_info *cdi = &info->devinfo;
1152 struct packet_command cgc;
1153 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1155 ide_debug_log(IDE_DBG_FUNC, "enter");
1157 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1158 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1160 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1162 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1163 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1166 } while (--attempts);
1170 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1172 struct cdrom_info *cd = drive->driver_data;
1173 u16 curspeed, maxspeed;
1175 ide_debug_log(IDE_DBG_FUNC, "enter");
1177 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1178 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1179 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1181 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1182 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1185 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1186 curspeed, maxspeed);
1188 cd->current_speed = (curspeed + (176/2)) / 176;
1189 cd->max_speed = (maxspeed + (176/2)) / 176;
1192 #define IDE_CD_CAPABILITIES \
1193 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1194 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1195 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1196 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1197 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1199 static struct cdrom_device_ops ide_cdrom_dops = {
1200 .open = ide_cdrom_open_real,
1201 .release = ide_cdrom_release_real,
1202 .drive_status = ide_cdrom_drive_status,
1203 .media_changed = ide_cdrom_check_media_change_real,
1204 .tray_move = ide_cdrom_tray_move,
1205 .lock_door = ide_cdrom_lock_door,
1206 .select_speed = ide_cdrom_select_speed,
1207 .get_last_session = ide_cdrom_get_last_session,
1208 .get_mcn = ide_cdrom_get_mcn,
1209 .reset = ide_cdrom_reset,
1210 .audio_ioctl = ide_cdrom_audio_ioctl,
1211 .capability = IDE_CD_CAPABILITIES,
1212 .generic_packet = ide_cdrom_packet,
1215 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1217 struct cdrom_info *info = drive->driver_data;
1218 struct cdrom_device_info *devinfo = &info->devinfo;
1220 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1222 devinfo->ops = &ide_cdrom_dops;
1223 devinfo->speed = info->current_speed;
1224 devinfo->capacity = nslots;
1225 devinfo->handle = drive;
1226 strcpy(devinfo->name, drive->name);
1228 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1229 devinfo->mask |= CDC_SELECT_SPEED;
1231 devinfo->disk = info->disk;
1232 return register_cdrom(devinfo);
1235 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1237 struct cdrom_info *cd = drive->driver_data;
1238 struct cdrom_device_info *cdi = &cd->devinfo;
1239 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1240 mechtype_t mechtype;
1243 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1244 drive->media, drive->atapi_flags);
1246 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1247 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1248 CDC_MO_DRIVE | CDC_RAM);
1250 if (drive->media == ide_optical) {
1251 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1252 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1257 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1258 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1259 cdi->mask &= ~CDC_PLAY_AUDIO;
1264 * We have to cheat a little here. the packet will eventually be queued
1265 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1266 * Since this device hasn't been registered with the Uniform layer yet,
1267 * it can't do this. Same goes for cdi->ops.
1269 cdi->handle = drive;
1270 cdi->ops = &ide_cdrom_dops;
1272 if (ide_cdrom_get_capabilities(drive, buf))
1275 if ((buf[8 + 6] & 0x01) == 0)
1276 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1277 if (buf[8 + 6] & 0x08)
1278 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1279 if (buf[8 + 3] & 0x01)
1280 cdi->mask &= ~CDC_CD_R;
1281 if (buf[8 + 3] & 0x02)
1282 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1283 if (buf[8 + 2] & 0x38)
1284 cdi->mask &= ~CDC_DVD;
1285 if (buf[8 + 3] & 0x20)
1286 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1287 if (buf[8 + 3] & 0x10)
1288 cdi->mask &= ~CDC_DVD_R;
1289 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1290 cdi->mask &= ~CDC_PLAY_AUDIO;
1292 mechtype = buf[8 + 6] >> 5;
1293 if (mechtype == mechtype_caddy ||
1294 mechtype == mechtype_popup ||
1295 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1296 cdi->mask |= CDC_CLOSE_TRAY;
1298 if (cdi->sanyo_slot > 0) {
1299 cdi->mask &= ~CDC_SELECT_DISC;
1301 } else if (mechtype == mechtype_individual_changer ||
1302 mechtype == mechtype_cartridge_changer) {
1303 nslots = cdrom_number_of_slots(cdi);
1305 cdi->mask &= ~CDC_SELECT_DISC;
1308 ide_cdrom_update_speed(drive, buf);
1310 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1312 /* don't print speed if the drive reported 0 */
1314 printk(KERN_CONT " %dX", cd->max_speed);
1316 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1318 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1319 printk(KERN_CONT " DVD%s%s",
1320 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1321 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1323 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1324 printk(KERN_CONT " CD%s%s",
1325 (cdi->mask & CDC_CD_R) ? "" : "-R",
1326 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1328 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1329 printk(KERN_CONT " changer w/%d slots", nslots);
1331 printk(KERN_CONT " drive");
1333 printk(KERN_CONT ", %dkB Cache\n",
1334 be16_to_cpup((__be16 *)&buf[8 + 12]));
1339 /* standard prep_rq_fn that builds 10 byte cmds */
1340 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1342 int hard_sect = queue_hardsect_size(q);
1343 long block = (long)blk_rq_pos(rq) / (hard_sect >> 9);
1344 unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9);
1346 memset(rq->cmd, 0, BLK_MAX_CDB);
1348 if (rq_data_dir(rq) == READ)
1349 rq->cmd[0] = GPCMD_READ_10;
1351 rq->cmd[0] = GPCMD_WRITE_10;
1356 rq->cmd[2] = (block >> 24) & 0xff;
1357 rq->cmd[3] = (block >> 16) & 0xff;
1358 rq->cmd[4] = (block >> 8) & 0xff;
1359 rq->cmd[5] = block & 0xff;
1362 * and transfer length
1364 rq->cmd[7] = (blocks >> 8) & 0xff;
1365 rq->cmd[8] = blocks & 0xff;
1371 * Most of the SCSI commands are supported directly by ATAPI devices.
1372 * This transform handles the few exceptions.
1374 static int ide_cdrom_prep_pc(struct request *rq)
1378 /* transform 6-byte read/write commands to the 10-byte version */
1379 if (c[0] == READ_6 || c[0] == WRITE_6) {
1386 c[0] += (READ_10 - READ_6);
1392 * it's silly to pretend we understand 6-byte sense commands, just
1393 * reject with ILLEGAL_REQUEST and the caller should take the
1394 * appropriate action
1396 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1397 rq->errors = ILLEGAL_REQUEST;
1398 return BLKPREP_KILL;
1404 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1406 if (blk_fs_request(rq))
1407 return ide_cdrom_prep_fs(q, rq);
1408 else if (blk_pc_request(rq))
1409 return ide_cdrom_prep_pc(rq);
1414 struct cd_list_entry {
1415 const char *id_model;
1416 const char *id_firmware;
1417 unsigned int cd_flags;
1420 #ifdef CONFIG_IDE_PROC_FS
1421 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1423 unsigned long capacity, sectors_per_frame;
1425 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1428 return capacity * sectors_per_frame;
1431 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1432 int count, int *eof, void *data)
1434 ide_drive_t *drive = data;
1437 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1438 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1441 static ide_proc_entry_t idecd_proc[] = {
1442 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1443 { NULL, 0, NULL, NULL }
1446 static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1451 static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1457 static const struct cd_list_entry ide_cd_quirks_list[] = {
1458 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1459 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1460 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1461 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1462 IDE_AFLAG_PRE_ATAPI12, },
1463 /* Vertos 300, some versions of this drive like to talk BCD. */
1464 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1465 /* Vertos 600 ESD. */
1466 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1468 * Sanyo 3 CD changer uses a non-standard command for CD changing
1469 * (by default standard ATAPI support for CD changers is used).
1471 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1472 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1473 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1474 /* Stingray 8X CD-ROM. */
1475 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1477 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1478 * mode sense page capabilities size, but older drives break.
1480 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1481 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1482 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1483 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1485 * Some drives used by Apple don't advertise audio play
1486 * but they do support reading TOC & audio datas.
1488 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1489 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1490 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1491 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1492 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1493 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1494 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1495 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1499 static unsigned int ide_cd_flags(u16 *id)
1501 const struct cd_list_entry *cle = ide_cd_quirks_list;
1503 while (cle->id_model) {
1504 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1505 (cle->id_firmware == NULL ||
1506 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1507 return cle->cd_flags;
1514 static int ide_cdrom_setup(ide_drive_t *drive)
1516 struct cdrom_info *cd = drive->driver_data;
1517 struct cdrom_device_info *cdi = &cd->devinfo;
1518 struct request_queue *q = drive->queue;
1519 u16 *id = drive->id;
1520 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1523 ide_debug_log(IDE_DBG_PROBE, "enter");
1525 blk_queue_prep_rq(q, ide_cdrom_prep_fn);
1526 blk_queue_dma_alignment(q, 31);
1527 blk_queue_update_dma_pad(q, 15);
1529 q->unplug_delay = max((1 * HZ) / 1000, 1);
1531 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1532 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1534 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1535 fw_rev[4] == '1' && fw_rev[6] <= '2')
1536 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1537 IDE_AFLAG_TOCADDR_AS_BCD);
1538 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1539 fw_rev[4] == '1' && fw_rev[6] <= '2')
1540 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1541 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1542 /* 3 => use CD in slot 0 */
1543 cdi->sanyo_slot = 3;
1545 nslots = ide_cdrom_probe_capabilities(drive);
1547 blk_queue_hardsect_size(q, CD_FRAMESIZE);
1549 if (ide_cdrom_register(drive, nslots)) {
1550 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1551 " cdrom driver.\n", drive->name, __func__);
1552 cd->devinfo.handle = NULL;
1556 ide_proc_register_driver(drive, cd->driver);
1560 static void ide_cd_remove(ide_drive_t *drive)
1562 struct cdrom_info *info = drive->driver_data;
1564 ide_debug_log(IDE_DBG_FUNC, "enter");
1566 ide_proc_unregister_driver(drive, info->driver);
1567 device_del(&info->dev);
1568 del_gendisk(info->disk);
1570 mutex_lock(&idecd_ref_mutex);
1571 put_device(&info->dev);
1572 mutex_unlock(&idecd_ref_mutex);
1575 static void ide_cd_release(struct device *dev)
1577 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1578 struct cdrom_device_info *devinfo = &info->devinfo;
1579 ide_drive_t *drive = info->drive;
1580 struct gendisk *g = info->disk;
1582 ide_debug_log(IDE_DBG_FUNC, "enter");
1585 if (devinfo->handle == drive)
1586 unregister_cdrom(devinfo);
1587 drive->driver_data = NULL;
1588 blk_queue_prep_rq(drive->queue, NULL);
1589 g->private_data = NULL;
1594 static int ide_cd_probe(ide_drive_t *);
1596 static struct ide_driver ide_cdrom_driver = {
1598 .owner = THIS_MODULE,
1599 .name = "ide-cdrom",
1600 .bus = &ide_bus_type,
1602 .probe = ide_cd_probe,
1603 .remove = ide_cd_remove,
1604 .version = IDECD_VERSION,
1605 .do_request = ide_cd_do_request,
1606 #ifdef CONFIG_IDE_PROC_FS
1607 .proc_entries = ide_cd_proc_entries,
1608 .proc_devsets = ide_cd_proc_devsets,
1612 static int idecd_open(struct block_device *bdev, fmode_t mode)
1614 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
1620 rc = cdrom_open(&info->devinfo, bdev, mode);
1628 static int idecd_release(struct gendisk *disk, fmode_t mode)
1630 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1632 cdrom_release(&info->devinfo, mode);
1639 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1641 struct packet_command cgc;
1646 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1649 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1651 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1655 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1656 return cdrom_mode_select(cdi, &cgc);
1659 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1661 struct packet_command cgc;
1666 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1668 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1672 spindown = buffer[11] & 0x0f;
1673 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1678 static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1679 unsigned int cmd, unsigned long arg)
1681 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1685 case CDROMSETSPINDOWN:
1686 return idecd_set_spindown(&info->devinfo, arg);
1687 case CDROMGETSPINDOWN:
1688 return idecd_get_spindown(&info->devinfo, arg);
1693 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1695 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1700 static int idecd_media_changed(struct gendisk *disk)
1702 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1703 return cdrom_media_changed(&info->devinfo);
1706 static int idecd_revalidate_disk(struct gendisk *disk)
1708 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1709 struct request_sense sense;
1711 ide_cd_read_toc(info->drive, &sense);
1716 static struct block_device_operations idecd_ops = {
1717 .owner = THIS_MODULE,
1719 .release = idecd_release,
1720 .locked_ioctl = idecd_ioctl,
1721 .media_changed = idecd_media_changed,
1722 .revalidate_disk = idecd_revalidate_disk
1725 /* module options */
1726 static unsigned long debug_mask;
1727 module_param(debug_mask, ulong, 0644);
1729 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1731 static int ide_cd_probe(ide_drive_t *drive)
1733 struct cdrom_info *info;
1735 struct request_sense sense;
1737 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1738 drive->driver_req, drive->media);
1740 if (!strstr("ide-cdrom", drive->driver_req))
1743 if (drive->media != ide_cdrom && drive->media != ide_optical)
1746 drive->debug_mask = debug_mask;
1747 drive->irq_handler = cdrom_newpc_intr;
1749 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1751 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1756 g = alloc_disk(1 << PARTN_BITS);
1760 ide_init_disk(g, drive);
1762 info->dev.parent = &drive->gendev;
1763 info->dev.release = ide_cd_release;
1764 dev_set_name(&info->dev, dev_name(&drive->gendev));
1766 if (device_register(&info->dev))
1769 info->drive = drive;
1770 info->driver = &ide_cdrom_driver;
1773 g->private_data = &info->driver;
1775 drive->driver_data = info;
1778 g->driverfs_dev = &drive->gendev;
1779 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1780 if (ide_cdrom_setup(drive)) {
1781 put_device(&info->dev);
1785 ide_cd_read_toc(drive, &sense);
1786 g->fops = &idecd_ops;
1787 g->flags |= GENHD_FL_REMOVABLE;
1799 static void __exit ide_cdrom_exit(void)
1801 driver_unregister(&ide_cdrom_driver.gen_driver);
1804 static int __init ide_cdrom_init(void)
1806 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
1807 return driver_register(&ide_cdrom_driver.gen_driver);
1810 MODULE_ALIAS("ide:*m-cdrom*");
1811 MODULE_ALIAS("ide-cd");
1812 module_init(ide_cdrom_init);
1813 module_exit(ide_cdrom_exit);
1814 MODULE_LICENSE("GPL");