4 * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
7 * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz
9 * May be copied or modified under the terms of the GNU General Public
10 * License. See linux/COPYING for more information.
12 * See Documentation/cdrom/ide-cd for usage information.
14 * Suggestions are welcome. Patches that work are more welcome though. ;-)
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 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 = &drive->request_sense_rq;
215 ide_debug_log(IDE_DBG_SENSE, "enter");
218 sense = &info->sense_data;
220 /* stuff the sense request in front of our current request */
221 blk_rq_init(NULL, rq);
222 rq->cmd_type = REQ_TYPE_ATA_PC;
223 rq->rq_disk = info->disk;
226 rq->cmd[0] = GPCMD_REQUEST_SENSE;
230 rq->cmd_type = REQ_TYPE_SENSE;
231 rq->cmd_flags |= REQ_PREEMPT;
233 /* NOTE! Save the failed command in "rq->buffer" */
234 rq->buffer = (void *) failed_command;
237 ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x",
238 failed_command->cmd[0]);
240 drive->hwif->rq = NULL;
242 elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
245 static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
248 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
251 struct request *failed = (struct request *)rq->buffer;
252 struct cdrom_info *info = drive->driver_data;
253 void *sense = &info->sense_data;
257 sense = failed->sense;
258 failed->sense_len = rq->sense_len;
260 cdrom_analyze_sense_data(drive, failed, sense);
262 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
265 cdrom_analyze_sense_data(drive, NULL, sense);
270 * 0: if the request should be continued.
271 * 1: if the request will be going through error recovery.
272 * 2: if the request should be ended.
274 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
276 ide_hwif_t *hwif = drive->hwif;
277 struct request *rq = hwif->rq;
278 int stat, err, sense_key;
280 /* check for errors */
281 stat = hwif->tp_ops->read_status(hwif);
286 if (OK_STAT(stat, good_stat, BAD_R_STAT))
289 /* get the IDE error register */
290 err = ide_read_error(drive);
291 sense_key = err >> 4;
293 ide_debug_log(IDE_DBG_RQ, "stat: 0x%x, good_stat: 0x%x, cmd[0]: 0x%x, "
294 "rq->cmd_type: 0x%x, err: 0x%x",
295 stat, good_stat, rq->cmd[0], rq->cmd_type,
298 if (blk_sense_request(rq)) {
300 * We got an error trying to get sense info from the drive
301 * (probably while trying to recover from a former error).
304 rq->cmd_flags |= REQ_FAILED;
306 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
307 /* All other functions, except for READ. */
310 * if we have an error, pass back CHECK_CONDITION as the
313 if (blk_pc_request(rq) && !rq->errors)
314 rq->errors = SAM_STAT_CHECK_CONDITION;
316 /* check for tray open */
317 if (sense_key == NOT_READY) {
318 cdrom_saw_media_change(drive);
319 } else if (sense_key == UNIT_ATTENTION) {
320 /* check for media change */
321 cdrom_saw_media_change(drive);
323 } else if (sense_key == ILLEGAL_REQUEST &&
324 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
326 * Don't print error message for this condition--
327 * SFF8090i indicates that 5/24/00 is the correct
328 * response to a request to close the tray if the
329 * drive doesn't have that capability.
330 * cdrom_log_sense() knows this!
332 } else if (!(rq->cmd_flags & REQ_QUIET)) {
333 /* otherwise, print an error */
334 ide_dump_status(drive, "packet command error", stat);
337 rq->cmd_flags |= REQ_FAILED;
340 * instead of playing games with moving completions around,
341 * remove failed request completely and end it when the
342 * request sense has completed
346 } else if (blk_fs_request(rq)) {
347 int do_end_request = 0;
349 /* handle errors from READ and WRITE requests */
351 if (blk_noretry_request(rq))
354 if (sense_key == NOT_READY) {
356 if (rq_data_dir(rq) == READ) {
357 cdrom_saw_media_change(drive);
359 /* fail the request */
360 printk(KERN_ERR PFX "%s: tray open\n",
364 struct cdrom_info *info = drive->driver_data;
367 * Allow the drive 5 seconds to recover, some
368 * devices will return this error while flushing
372 info->write_timeout = jiffies +
373 ATAPI_WAIT_WRITE_BUSY;
375 if (time_after(jiffies, info->write_timeout))
378 struct request_queue *q = drive->queue;
382 * take a breather relying on the unplug
383 * timer to kick us again
385 spin_lock_irqsave(q->queue_lock, flags);
387 spin_unlock_irqrestore(q->queue_lock, flags);
392 } else if (sense_key == UNIT_ATTENTION) {
394 cdrom_saw_media_change(drive);
397 * Arrange to retry the request but be sure to give up
398 * if we've retried too many times.
400 if (++rq->errors > ERROR_MAX)
402 } else if (sense_key == ILLEGAL_REQUEST ||
403 sense_key == DATA_PROTECT) {
405 * No point in retrying after an illegal request or data
408 ide_dump_status(drive, "command error", stat);
410 } else if (sense_key == MEDIUM_ERROR) {
412 * No point in re-trying a zillion times on a bad
413 * sector. If we got here the error is not correctable.
415 ide_dump_status(drive, "media error (bad sector)",
418 } else if (sense_key == BLANK_CHECK) {
419 /* disk appears blank ?? */
420 ide_dump_status(drive, "media error (blank)", stat);
422 } else if ((err & ~ATA_ABORTED) != 0) {
423 /* go to the default handler for other errors */
424 ide_error(drive, "cdrom_decode_status", stat);
426 } else if ((++rq->errors > ERROR_MAX)) {
427 /* we've racked up too many retries, abort */
432 * End a request through request sense analysis when we have
433 * sense data. We need this in order to perform end of media
440 * If we got a CHECK_CONDITION status, queue
441 * a request sense command.
444 cdrom_queue_request_sense(drive, NULL, NULL);
447 blk_dump_rq_flags(rq, PFX "bad rq");
452 if (stat & ATA_ERR) {
453 struct request_queue *q = drive->queue;
456 spin_lock_irqsave(q->queue_lock, flags);
457 blkdev_dequeue_request(rq);
458 spin_unlock_irqrestore(q->queue_lock, flags);
462 cdrom_queue_request_sense(drive, rq->sense, rq);
469 * Check the contents of the interrupt reason register from the cdrom
470 * and attempt to recover if there are problems. Returns 0 if everything's
471 * ok; nonzero if the request has been terminated.
473 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
474 int len, int ireason, int rw)
476 ide_hwif_t *hwif = drive->hwif;
478 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
481 * ireason == 0: the drive wants to receive data from us
482 * ireason == 2: the drive is expecting to transfer data to us
484 if (ireason == (!rw << 1))
486 else if (ireason == (rw << 1)) {
489 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
490 drive->name, __func__);
492 ide_pad_transfer(drive, rw, len);
493 } else if (rw == 0 && ireason == 1) {
495 * Some drives (ASUS) seem to tell us that status info is
496 * available. Just get it and ignore.
498 (void)hwif->tp_ops->read_status(hwif);
501 /* drive wants a command packet, or invalid ireason... */
502 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
503 drive->name, __func__, ireason);
506 if (rq->cmd_type == REQ_TYPE_ATA_PC)
507 rq->cmd_flags |= REQ_FAILED;
513 * Assume that the drive will always provide data in multiples of at least
514 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
516 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
518 ide_debug_log(IDE_DBG_FUNC, "len: %d", len);
520 if ((len % SECTOR_SIZE) == 0)
523 printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name,
526 if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
527 printk(KERN_ERR PFX "This drive is not supported by this "
528 "version of the driver\n");
530 printk(KERN_ERR PFX "Trying to limit transfer sizes\n");
531 drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
537 static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
540 ide_debug_log(IDE_DBG_RQ, "rq->cmd_flags: 0x%x", rq->cmd_flags);
542 if (rq_data_dir(rq) == READ) {
543 unsigned short sectors_per_frame =
544 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
545 int nskip = rq->sector & (sectors_per_frame - 1);
548 * If the requested sector doesn't start on a frame boundary,
549 * we must adjust the start of the transfer so that it does,
550 * and remember to skip the first few sectors.
552 * If the rq->current_nr_sectors field is larger than the size
553 * of the buffer, it will mean that we're to skip a number of
554 * sectors equal to the amount by which rq->current_nr_sectors
555 * is larger than the buffer size.
558 /* sanity check... */
559 if (rq->current_nr_sectors !=
560 bio_cur_sectors(rq->bio)) {
561 printk(KERN_ERR PFX "%s: %s: buffer botch (%u)\n",
562 drive->name, __func__,
563 rq->current_nr_sectors);
566 rq->current_nr_sectors += nskip;
570 /* set up the command */
571 rq->timeout = ATAPI_WAIT_PC;
577 * Fix up a possibly partially-processed request so that we can start it over
578 * entirely, or even put it back on the request queue.
580 static void ide_cd_restore_request(ide_drive_t *drive, struct request *rq)
583 ide_debug_log(IDE_DBG_FUNC, "enter");
585 if (rq->buffer != bio_data(rq->bio)) {
587 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
589 rq->buffer = bio_data(rq->bio);
593 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
594 rq->hard_cur_sectors = rq->current_nr_sectors;
595 rq->hard_nr_sectors = rq->nr_sectors;
596 rq->hard_sector = rq->sector;
597 rq->q->prep_rq_fn(rq->q, rq);
600 static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct request *rq)
602 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
605 * Some of the trailing request sense fields are optional,
606 * and some drives don't send them. Sigh.
608 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
609 rq->data_len > 0 && rq->data_len <= 5)
610 while (rq->data_len > 0) {
611 *(u8 *)rq->data++ = 0;
616 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
617 int write, void *buffer, unsigned *bufflen,
618 struct request_sense *sense, int timeout,
619 unsigned int cmd_flags)
621 struct cdrom_info *info = drive->driver_data;
622 struct request_sense local_sense;
624 unsigned int flags = 0;
627 sense = &local_sense;
629 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
631 cmd[0], write, timeout, cmd_flags);
633 /* start of retry loop */
638 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
640 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
641 rq->cmd_type = REQ_TYPE_ATA_PC;
643 rq->cmd_flags |= cmd_flags;
644 rq->timeout = timeout;
647 rq->data_len = *bufflen;
650 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
653 *bufflen = rq->data_len;
655 flags = rq->cmd_flags;
659 * FIXME: we should probably abort/retry or something in case of
662 if (flags & REQ_FAILED) {
664 * The request failed. Retry if it was due to a unit
665 * attention status (usually means media was changed).
667 struct request_sense *reqbuf = sense;
669 if (reqbuf->sense_key == UNIT_ATTENTION)
670 cdrom_saw_media_change(drive);
671 else if (reqbuf->sense_key == NOT_READY &&
672 reqbuf->asc == 4 && reqbuf->ascq != 4) {
674 * The drive is in the process of loading
675 * a disk. Retry, but wait a little to give
676 * the drive time to complete the load.
680 /* otherwise, don't retry */
686 /* end of retry loop */
687 } while ((flags & REQ_FAILED) && retries >= 0);
689 /* return an error if the command failed */
690 return (flags & REQ_FAILED) ? -EIO : 0;
694 * Called from blk_end_request_callback() after the data of the request is
695 * completed and before the request itself is completed. By returning value '1',
696 * blk_end_request_callback() returns immediately without completing it.
698 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
703 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
705 ide_hwif_t *hwif = drive->hwif;
706 struct request *rq = hwif->rq;
707 xfer_func_t *xferfunc;
708 ide_expiry_t *expiry = NULL;
709 int dma_error = 0, dma, stat, thislen, uptodate = 0;
710 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc, nsectors;
711 int sense = blk_sense_request(rq);
712 unsigned int timeout;
716 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x",
719 /* check for errors */
723 dma_error = hwif->dma_ops->dma_end(drive);
725 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
726 write ? "write" : "read");
731 rc = cdrom_decode_status(drive, 0, &stat);
738 /* using dma, transfer is complete now */
741 return ide_error(drive, "dma error", stat);
742 if (blk_fs_request(rq)) {
743 ide_complete_rq(drive, 0, rq->nr_sectors
744 ? (rq->nr_sectors << 9) : ide_rq_bytes(rq));
746 } else if (rq->cmd_type == REQ_TYPE_ATA_PC && !rq->bio) {
747 ide_complete_rq(drive, 0, 512);
750 if (blk_pc_request(rq) == 0 && uptodate == 0)
751 rq->cmd_flags |= REQ_FAILED;
755 ide_read_bcount_and_ireason(drive, &len, &ireason);
757 thislen = blk_fs_request(rq) ? len : rq->data_len;
761 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
764 /* If DRQ is clear, the command has completed. */
765 if ((stat & ATA_DRQ) == 0) {
766 if (blk_fs_request(rq)) {
768 * If we're not done reading/writing, complain.
769 * Otherwise, complete the command normally.
772 if (rq->current_nr_sectors > 0) {
773 printk(KERN_ERR PFX "%s: %s: data underrun "
775 drive->name, __func__,
776 rq->current_nr_sectors);
778 rq->cmd_flags |= REQ_FAILED;
781 } else if (!blk_pc_request(rq)) {
782 ide_cd_request_sense_fixup(drive, rq);
783 /* complain if we still have data left to transfer */
784 uptodate = rq->data_len ? 0 : 1;
786 rq->cmd_flags |= REQ_FAILED;
791 /* check which way to transfer data */
792 rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
796 if (blk_fs_request(rq)) {
800 if (ide_cd_check_transfer_size(drive, len))
804 * First, figure out if we need to bit-bucket
805 * any of the leading sectors.
807 nskip = min_t(int, rq->current_nr_sectors
808 - bio_cur_sectors(rq->bio),
811 ide_pad_transfer(drive, write, nskip << 9);
812 rq->current_nr_sectors -= nskip;
813 thislen -= (nskip << 9);
820 xferfunc = hwif->tp_ops->output_data;
823 xferfunc = hwif->tp_ops->input_data;
826 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
828 rq->cmd_type, ireason);
831 while (thislen > 0) {
832 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
833 int blen = rq->data_len;
837 if (blk_fs_request(rq)) {
839 blen = rq->current_nr_sectors << 9;
841 ptr = bio_data(rq->bio);
842 blen = bio_iovec(rq->bio)->bv_len;
847 if (blk_fs_request(rq) && !write)
849 * If the buffers are full, pipe the rest into
852 ide_pad_transfer(drive, 0, thislen);
854 printk(KERN_ERR PFX "%s: confused, missing data\n",
856 blk_dump_rq_flags(rq, rq_data_dir(rq)
857 ? "cdrom_newpc_intr, write"
858 : "cdrom_newpc_intr, read");
866 xferfunc(drive, NULL, ptr, blen);
871 if (blk_fs_request(rq)) {
873 rq->nr_sectors -= (blen >> 9);
874 rq->current_nr_sectors -= (blen >> 9);
875 rq->sector += (blen >> 9);
877 if (rq->current_nr_sectors == 0 && rq->nr_sectors) {
878 nsectors = rq->hard_cur_sectors;
883 ide_complete_rq(drive, 0, nsectors << 9);
886 rq->data_len -= blen;
889 * The request can't be completed until DRQ is cleared.
890 * So complete the data, but don't complete the request
891 * using the dummy function for the callback feature
892 * of blk_end_request_callback().
895 blk_end_request_callback(rq, 0, blen,
896 cdrom_newpc_intr_dummy_cb);
900 if (sense && write == 0)
901 rq->sense_len += blen;
904 /* pad, if necessary */
905 if (!blk_fs_request(rq) && len > 0)
906 ide_pad_transfer(drive, write, len);
908 if (blk_pc_request(rq)) {
909 timeout = rq->timeout;
911 timeout = ATAPI_WAIT_PC;
912 if (!blk_fs_request(rq))
913 expiry = ide_cd_expiry;
916 hwif->expiry = expiry;
917 ide_set_handler(drive, cdrom_newpc_intr, timeout);
921 if (blk_pc_request(rq) && rc == 0) {
922 unsigned int dlen = rq->data_len;
927 if (blk_end_request(rq, 0, dlen))
932 if (sense && uptodate)
933 ide_cd_complete_failed_rq(drive, rq);
935 if (blk_fs_request(rq)) {
936 if (rq->current_nr_sectors == 0)
939 if (uptodate <= 0 && rq->errors == 0)
943 /* make sure it's fully ended */
944 if (blk_pc_request(rq))
945 nsectors = (rq->data_len + 511) >> 9;
947 nsectors = rq->hard_cur_sectors;
952 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
954 if (sense && rc == 2)
955 ide_error(drive, "request sense failure", stat);
960 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
962 struct cdrom_info *cd = drive->driver_data;
963 int write = rq_data_dir(rq) == WRITE;
964 unsigned short sectors_per_frame =
965 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
967 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, write: 0x%x, "
968 "secs_per_frame: %u",
969 rq->cmd[0], write, sectors_per_frame);
972 /* disk has become write protected */
973 if (get_disk_ro(cd->disk))
977 * We may be retrying this request after an error. Fix up any
978 * weirdness which might be present in the request packet.
980 ide_cd_restore_request(drive, rq);
983 /* use DMA, if possible / writes *must* be hardware frame aligned */
984 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
985 (rq->sector & (sectors_per_frame - 1))) {
990 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
993 cd->devinfo.media_written = 1;
998 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1001 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
1002 rq->cmd[0], rq->cmd_type);
1004 if (blk_pc_request(rq))
1005 rq->cmd_flags |= REQ_QUIET;
1007 rq->cmd_flags &= ~REQ_FAILED;
1012 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
1013 struct request_queue *q = drive->queue;
1014 unsigned int alignment;
1018 buf = bio_data(rq->bio);
1022 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
1025 * check if dma is safe
1027 * NOTE! The "len" and "addr" checks should possibly have
1030 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
1031 if ((unsigned long)buf & alignment
1032 || rq->data_len & q->dma_pad_mask
1033 || object_is_on_stack(buf))
1038 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
1042 int uptodate = 0, nsectors;
1044 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
1045 rq->cmd[0], (unsigned long long)block);
1047 if (drive->debug_mask & IDE_DBG_RQ)
1048 blk_dump_rq_flags(rq, "ide_cd_do_request");
1050 if (blk_fs_request(rq)) {
1051 if (cdrom_start_rw(drive, rq) == ide_stopped ||
1052 ide_cd_prepare_rw_request(drive, rq) == ide_stopped) {
1053 if (rq->current_nr_sectors == 0)
1057 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
1058 rq->cmd_type == REQ_TYPE_ATA_PC) {
1060 rq->timeout = ATAPI_WAIT_PC;
1062 cdrom_do_block_pc(drive, rq);
1063 } else if (blk_special_request(rq)) {
1064 /* right now this can only be a reset... */
1068 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
1069 if (rq->errors == 0)
1074 memset(&cmd, 0, sizeof(cmd));
1076 if (rq_data_dir(rq))
1077 cmd.tf_flags |= IDE_TFLAG_WRITE;
1081 return ide_issue_pc(drive, &cmd);
1083 nsectors = rq->hard_nr_sectors;
1088 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
1096 * Routines which queue packet commands take as a final argument a pointer to a
1097 * request_sense struct. If execution of the command results in an error with a
1098 * CHECK CONDITION status, this structure will be filled with the results of the
1099 * subsequent request sense command. The pointer can also be NULL, in which case
1100 * no sense information is returned.
1102 static void msf_from_bcd(struct atapi_msf *msf)
1104 msf->minute = bcd2bin(msf->minute);
1105 msf->second = bcd2bin(msf->second);
1106 msf->frame = bcd2bin(msf->frame);
1109 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1111 struct cdrom_info *info = drive->driver_data;
1112 struct cdrom_device_info *cdi = &info->devinfo;
1113 unsigned char cmd[BLK_MAX_CDB];
1115 ide_debug_log(IDE_DBG_FUNC, "enter");
1117 memset(cmd, 0, BLK_MAX_CDB);
1118 cmd[0] = GPCMD_TEST_UNIT_READY;
1121 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1122 * instead of supporting the LOAD_UNLOAD opcode.
1124 cmd[7] = cdi->sanyo_slot % 3;
1126 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
1129 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1130 unsigned long *sectors_per_frame,
1131 struct request_sense *sense)
1139 unsigned char cmd[BLK_MAX_CDB];
1140 unsigned len = sizeof(capbuf);
1143 ide_debug_log(IDE_DBG_FUNC, "enter");
1145 memset(cmd, 0, BLK_MAX_CDB);
1146 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1148 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1154 * Sanity check the given block size
1156 blocklen = be32_to_cpu(capbuf.blocklen);
1164 printk(KERN_ERR PFX "%s: weird block size %u\n",
1165 drive->name, blocklen);
1166 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
1172 *capacity = 1 + be32_to_cpu(capbuf.lba);
1173 *sectors_per_frame = blocklen >> SECTOR_BITS;
1175 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
1176 *capacity, *sectors_per_frame);
1181 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1182 int format, char *buf, int buflen,
1183 struct request_sense *sense)
1185 unsigned char cmd[BLK_MAX_CDB];
1187 ide_debug_log(IDE_DBG_FUNC, "enter");
1189 memset(cmd, 0, BLK_MAX_CDB);
1191 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1193 cmd[7] = (buflen >> 8);
1194 cmd[8] = (buflen & 0xff);
1195 cmd[9] = (format << 6);
1200 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
1203 /* Try to read the entire TOC for the disk into our internal buffer. */
1204 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1206 int stat, ntracks, i;
1207 struct cdrom_info *info = drive->driver_data;
1208 struct cdrom_device_info *cdi = &info->devinfo;
1209 struct atapi_toc *toc = info->toc;
1211 struct atapi_toc_header hdr;
1212 struct atapi_toc_entry ent;
1215 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1217 ide_debug_log(IDE_DBG_FUNC, "enter");
1220 /* try to allocate space */
1221 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1223 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
1231 * Check to see if the existing data is still valid. If it is,
1234 (void) cdrom_check_status(drive, sense);
1236 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1239 /* try to get the total cdrom capacity and sector size */
1240 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1243 toc->capacity = 0x1fffff;
1245 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1246 /* save a private copy of the TOC capacity for error handling */
1247 drive->probed_capacity = toc->capacity * sectors_per_frame;
1249 blk_queue_hardsect_size(drive->queue,
1250 sectors_per_frame << SECTOR_BITS);
1252 /* first read just the header, so we know how long the TOC is */
1253 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1254 sizeof(struct atapi_toc_header), sense);
1258 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1259 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1260 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1263 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1266 if (ntracks > MAX_TRACKS)
1267 ntracks = MAX_TRACKS;
1269 /* now read the whole schmeer */
1270 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1272 sizeof(struct atapi_toc_header) +
1274 sizeof(struct atapi_toc_entry), sense);
1276 if (stat && toc->hdr.first_track > 1) {
1278 * Cds with CDI tracks only don't have any TOC entries, despite
1279 * of this the returned values are
1280 * first_track == last_track = number of CDI tracks + 1,
1281 * so that this case is indistinguishable from the same layout
1282 * plus an additional audio track. If we get an error for the
1283 * regular case, we assume a CDI without additional audio
1284 * tracks. In this case the readable TOC is empty (CDI tracks
1285 * are not included) and only holds the Leadout entry.
1290 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1292 sizeof(struct atapi_toc_header) +
1294 sizeof(struct atapi_toc_entry),
1299 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1300 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1301 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1303 toc->hdr.first_track = CDROM_LEADOUT;
1304 toc->hdr.last_track = CDROM_LEADOUT;
1311 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1313 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1314 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1315 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1318 for (i = 0; i <= ntracks; i++) {
1319 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1320 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1321 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1322 msf_from_bcd(&toc->ent[i].addr.msf);
1324 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1325 toc->ent[i].addr.msf.second,
1326 toc->ent[i].addr.msf.frame);
1329 if (toc->hdr.first_track != CDROM_LEADOUT) {
1330 /* read the multisession information */
1331 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1332 sizeof(ms_tmp), sense);
1336 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1338 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1339 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1340 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1343 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1344 /* re-read multisession information using MSF format */
1345 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1346 sizeof(ms_tmp), sense);
1350 msf_from_bcd(&ms_tmp.ent.addr.msf);
1351 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1352 ms_tmp.ent.addr.msf.second,
1353 ms_tmp.ent.addr.msf.frame);
1356 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1358 /* now try to get the total cdrom capacity */
1359 stat = cdrom_get_last_written(cdi, &last_written);
1360 if (!stat && (last_written > toc->capacity)) {
1361 toc->capacity = last_written;
1362 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1363 drive->probed_capacity = toc->capacity * sectors_per_frame;
1366 /* Remember that we've read this stuff. */
1367 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1372 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1374 struct cdrom_info *info = drive->driver_data;
1375 struct cdrom_device_info *cdi = &info->devinfo;
1376 struct packet_command cgc;
1377 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1379 ide_debug_log(IDE_DBG_FUNC, "enter");
1381 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1382 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1384 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1386 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1387 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1390 } while (--attempts);
1394 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1396 struct cdrom_info *cd = drive->driver_data;
1397 u16 curspeed, maxspeed;
1399 ide_debug_log(IDE_DBG_FUNC, "enter");
1401 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1402 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1403 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1405 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1406 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1409 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1410 curspeed, maxspeed);
1412 cd->current_speed = (curspeed + (176/2)) / 176;
1413 cd->max_speed = (maxspeed + (176/2)) / 176;
1416 #define IDE_CD_CAPABILITIES \
1417 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1418 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1419 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1420 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1421 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1423 static struct cdrom_device_ops ide_cdrom_dops = {
1424 .open = ide_cdrom_open_real,
1425 .release = ide_cdrom_release_real,
1426 .drive_status = ide_cdrom_drive_status,
1427 .media_changed = ide_cdrom_check_media_change_real,
1428 .tray_move = ide_cdrom_tray_move,
1429 .lock_door = ide_cdrom_lock_door,
1430 .select_speed = ide_cdrom_select_speed,
1431 .get_last_session = ide_cdrom_get_last_session,
1432 .get_mcn = ide_cdrom_get_mcn,
1433 .reset = ide_cdrom_reset,
1434 .audio_ioctl = ide_cdrom_audio_ioctl,
1435 .capability = IDE_CD_CAPABILITIES,
1436 .generic_packet = ide_cdrom_packet,
1439 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1441 struct cdrom_info *info = drive->driver_data;
1442 struct cdrom_device_info *devinfo = &info->devinfo;
1444 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1446 devinfo->ops = &ide_cdrom_dops;
1447 devinfo->speed = info->current_speed;
1448 devinfo->capacity = nslots;
1449 devinfo->handle = drive;
1450 strcpy(devinfo->name, drive->name);
1452 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1453 devinfo->mask |= CDC_SELECT_SPEED;
1455 devinfo->disk = info->disk;
1456 return register_cdrom(devinfo);
1459 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1461 struct cdrom_info *cd = drive->driver_data;
1462 struct cdrom_device_info *cdi = &cd->devinfo;
1463 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1464 mechtype_t mechtype;
1467 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1468 drive->media, drive->atapi_flags);
1470 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1471 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1472 CDC_MO_DRIVE | CDC_RAM);
1474 if (drive->media == ide_optical) {
1475 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1476 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1481 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1482 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1483 cdi->mask &= ~CDC_PLAY_AUDIO;
1488 * We have to cheat a little here. the packet will eventually be queued
1489 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1490 * Since this device hasn't been registered with the Uniform layer yet,
1491 * it can't do this. Same goes for cdi->ops.
1493 cdi->handle = drive;
1494 cdi->ops = &ide_cdrom_dops;
1496 if (ide_cdrom_get_capabilities(drive, buf))
1499 if ((buf[8 + 6] & 0x01) == 0)
1500 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1501 if (buf[8 + 6] & 0x08)
1502 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1503 if (buf[8 + 3] & 0x01)
1504 cdi->mask &= ~CDC_CD_R;
1505 if (buf[8 + 3] & 0x02)
1506 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1507 if (buf[8 + 2] & 0x38)
1508 cdi->mask &= ~CDC_DVD;
1509 if (buf[8 + 3] & 0x20)
1510 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1511 if (buf[8 + 3] & 0x10)
1512 cdi->mask &= ~CDC_DVD_R;
1513 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1514 cdi->mask &= ~CDC_PLAY_AUDIO;
1516 mechtype = buf[8 + 6] >> 5;
1517 if (mechtype == mechtype_caddy ||
1518 mechtype == mechtype_popup ||
1519 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1520 cdi->mask |= CDC_CLOSE_TRAY;
1522 if (cdi->sanyo_slot > 0) {
1523 cdi->mask &= ~CDC_SELECT_DISC;
1525 } else if (mechtype == mechtype_individual_changer ||
1526 mechtype == mechtype_cartridge_changer) {
1527 nslots = cdrom_number_of_slots(cdi);
1529 cdi->mask &= ~CDC_SELECT_DISC;
1532 ide_cdrom_update_speed(drive, buf);
1534 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1536 /* don't print speed if the drive reported 0 */
1538 printk(KERN_CONT " %dX", cd->max_speed);
1540 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1542 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1543 printk(KERN_CONT " DVD%s%s",
1544 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1545 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1547 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1548 printk(KERN_CONT " CD%s%s",
1549 (cdi->mask & CDC_CD_R) ? "" : "-R",
1550 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1552 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1553 printk(KERN_CONT " changer w/%d slots", nslots);
1555 printk(KERN_CONT " drive");
1557 printk(KERN_CONT ", %dkB Cache\n",
1558 be16_to_cpup((__be16 *)&buf[8 + 12]));
1563 /* standard prep_rq_fn that builds 10 byte cmds */
1564 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1566 int hard_sect = queue_hardsect_size(q);
1567 long block = (long)rq->hard_sector / (hard_sect >> 9);
1568 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1570 memset(rq->cmd, 0, BLK_MAX_CDB);
1572 if (rq_data_dir(rq) == READ)
1573 rq->cmd[0] = GPCMD_READ_10;
1575 rq->cmd[0] = GPCMD_WRITE_10;
1580 rq->cmd[2] = (block >> 24) & 0xff;
1581 rq->cmd[3] = (block >> 16) & 0xff;
1582 rq->cmd[4] = (block >> 8) & 0xff;
1583 rq->cmd[5] = block & 0xff;
1586 * and transfer length
1588 rq->cmd[7] = (blocks >> 8) & 0xff;
1589 rq->cmd[8] = blocks & 0xff;
1595 * Most of the SCSI commands are supported directly by ATAPI devices.
1596 * This transform handles the few exceptions.
1598 static int ide_cdrom_prep_pc(struct request *rq)
1602 /* transform 6-byte read/write commands to the 10-byte version */
1603 if (c[0] == READ_6 || c[0] == WRITE_6) {
1610 c[0] += (READ_10 - READ_6);
1616 * it's silly to pretend we understand 6-byte sense commands, just
1617 * reject with ILLEGAL_REQUEST and the caller should take the
1618 * appropriate action
1620 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1621 rq->errors = ILLEGAL_REQUEST;
1622 return BLKPREP_KILL;
1628 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1630 if (blk_fs_request(rq))
1631 return ide_cdrom_prep_fs(q, rq);
1632 else if (blk_pc_request(rq))
1633 return ide_cdrom_prep_pc(rq);
1638 struct cd_list_entry {
1639 const char *id_model;
1640 const char *id_firmware;
1641 unsigned int cd_flags;
1644 #ifdef CONFIG_IDE_PROC_FS
1645 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1647 unsigned long capacity, sectors_per_frame;
1649 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1652 return capacity * sectors_per_frame;
1655 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1656 int count, int *eof, void *data)
1658 ide_drive_t *drive = data;
1661 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1662 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1665 static ide_proc_entry_t idecd_proc[] = {
1666 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1667 { NULL, 0, NULL, NULL }
1670 static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1675 static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1681 static const struct cd_list_entry ide_cd_quirks_list[] = {
1682 /* Limit transfer size per interrupt. */
1683 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1684 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1685 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1686 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1687 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1688 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1689 IDE_AFLAG_PRE_ATAPI12, },
1690 /* Vertos 300, some versions of this drive like to talk BCD. */
1691 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1692 /* Vertos 600 ESD. */
1693 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1695 * Sanyo 3 CD changer uses a non-standard command for CD changing
1696 * (by default standard ATAPI support for CD changers is used).
1698 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1699 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1700 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1701 /* Stingray 8X CD-ROM. */
1702 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1704 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1705 * mode sense page capabilities size, but older drives break.
1707 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1708 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1709 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1710 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1712 * Some drives used by Apple don't advertise audio play
1713 * but they do support reading TOC & audio datas.
1715 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1716 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1717 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1718 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1719 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1720 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1721 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1722 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1726 static unsigned int ide_cd_flags(u16 *id)
1728 const struct cd_list_entry *cle = ide_cd_quirks_list;
1730 while (cle->id_model) {
1731 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1732 (cle->id_firmware == NULL ||
1733 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1734 return cle->cd_flags;
1741 static int ide_cdrom_setup(ide_drive_t *drive)
1743 struct cdrom_info *cd = drive->driver_data;
1744 struct cdrom_device_info *cdi = &cd->devinfo;
1745 u16 *id = drive->id;
1746 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1749 ide_debug_log(IDE_DBG_PROBE, "enter");
1751 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1752 blk_queue_dma_alignment(drive->queue, 31);
1753 blk_queue_update_dma_pad(drive->queue, 15);
1754 drive->queue->unplug_delay = (1 * HZ) / 1000;
1755 if (!drive->queue->unplug_delay)
1756 drive->queue->unplug_delay = 1;
1758 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1759 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1761 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1762 fw_rev[4] == '1' && fw_rev[6] <= '2')
1763 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1764 IDE_AFLAG_TOCADDR_AS_BCD);
1765 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1766 fw_rev[4] == '1' && fw_rev[6] <= '2')
1767 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1768 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1769 /* 3 => use CD in slot 0 */
1770 cdi->sanyo_slot = 3;
1772 nslots = ide_cdrom_probe_capabilities(drive);
1774 /* set correct block size */
1775 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1777 if (ide_cdrom_register(drive, nslots)) {
1778 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1779 " cdrom driver.\n", drive->name, __func__);
1780 cd->devinfo.handle = NULL;
1784 ide_proc_register_driver(drive, cd->driver);
1788 static void ide_cd_remove(ide_drive_t *drive)
1790 struct cdrom_info *info = drive->driver_data;
1792 ide_debug_log(IDE_DBG_FUNC, "enter");
1794 ide_proc_unregister_driver(drive, info->driver);
1795 device_del(&info->dev);
1796 del_gendisk(info->disk);
1798 mutex_lock(&idecd_ref_mutex);
1799 put_device(&info->dev);
1800 mutex_unlock(&idecd_ref_mutex);
1803 static void ide_cd_release(struct device *dev)
1805 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1806 struct cdrom_device_info *devinfo = &info->devinfo;
1807 ide_drive_t *drive = info->drive;
1808 struct gendisk *g = info->disk;
1810 ide_debug_log(IDE_DBG_FUNC, "enter");
1813 if (devinfo->handle == drive)
1814 unregister_cdrom(devinfo);
1815 drive->driver_data = NULL;
1816 blk_queue_prep_rq(drive->queue, NULL);
1817 g->private_data = NULL;
1822 static int ide_cd_probe(ide_drive_t *);
1824 static struct ide_driver ide_cdrom_driver = {
1826 .owner = THIS_MODULE,
1827 .name = "ide-cdrom",
1828 .bus = &ide_bus_type,
1830 .probe = ide_cd_probe,
1831 .remove = ide_cd_remove,
1832 .version = IDECD_VERSION,
1833 .do_request = ide_cd_do_request,
1834 #ifdef CONFIG_IDE_PROC_FS
1835 .proc_entries = ide_cd_proc_entries,
1836 .proc_devsets = ide_cd_proc_devsets,
1840 static int idecd_open(struct block_device *bdev, fmode_t mode)
1842 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
1848 rc = cdrom_open(&info->devinfo, bdev, mode);
1856 static int idecd_release(struct gendisk *disk, fmode_t mode)
1858 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1860 cdrom_release(&info->devinfo, mode);
1867 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1869 struct packet_command cgc;
1874 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1877 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1879 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1883 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1884 return cdrom_mode_select(cdi, &cgc);
1887 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1889 struct packet_command cgc;
1894 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1896 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1900 spindown = buffer[11] & 0x0f;
1901 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1906 static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1907 unsigned int cmd, unsigned long arg)
1909 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1913 case CDROMSETSPINDOWN:
1914 return idecd_set_spindown(&info->devinfo, arg);
1915 case CDROMGETSPINDOWN:
1916 return idecd_get_spindown(&info->devinfo, arg);
1921 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1923 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1928 static int idecd_media_changed(struct gendisk *disk)
1930 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1931 return cdrom_media_changed(&info->devinfo);
1934 static int idecd_revalidate_disk(struct gendisk *disk)
1936 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1937 struct request_sense sense;
1939 ide_cd_read_toc(info->drive, &sense);
1944 static struct block_device_operations idecd_ops = {
1945 .owner = THIS_MODULE,
1947 .release = idecd_release,
1948 .locked_ioctl = idecd_ioctl,
1949 .media_changed = idecd_media_changed,
1950 .revalidate_disk = idecd_revalidate_disk
1953 /* module options */
1954 static unsigned long debug_mask;
1955 module_param(debug_mask, ulong, 0644);
1957 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1959 static int ide_cd_probe(ide_drive_t *drive)
1961 struct cdrom_info *info;
1963 struct request_sense sense;
1965 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1966 drive->driver_req, drive->media);
1968 if (!strstr("ide-cdrom", drive->driver_req))
1971 if (drive->media != ide_cdrom && drive->media != ide_optical)
1974 drive->debug_mask = debug_mask;
1975 drive->irq_handler = cdrom_newpc_intr;
1977 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1979 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1984 g = alloc_disk(1 << PARTN_BITS);
1988 ide_init_disk(g, drive);
1990 info->dev.parent = &drive->gendev;
1991 info->dev.release = ide_cd_release;
1992 dev_set_name(&info->dev, dev_name(&drive->gendev));
1994 if (device_register(&info->dev))
1997 info->drive = drive;
1998 info->driver = &ide_cdrom_driver;
2001 g->private_data = &info->driver;
2003 drive->driver_data = info;
2006 g->driverfs_dev = &drive->gendev;
2007 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2008 if (ide_cdrom_setup(drive)) {
2009 put_device(&info->dev);
2013 ide_cd_read_toc(drive, &sense);
2014 g->fops = &idecd_ops;
2015 g->flags |= GENHD_FL_REMOVABLE;
2027 static void __exit ide_cdrom_exit(void)
2029 driver_unregister(&ide_cdrom_driver.gen_driver);
2032 static int __init ide_cdrom_init(void)
2034 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
2035 return driver_register(&ide_cdrom_driver.gen_driver);
2038 MODULE_ALIAS("ide:*m-cdrom*");
2039 MODULE_ALIAS("ide-cd");
2040 module_init(ide_cdrom_init);
2041 module_exit(ide_cdrom_exit);
2042 MODULE_LICENSE("GPL");