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. ;-)
15 * For those wishing to work on this driver, please be sure you download
16 * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI
17 * (SFF-8020i rev 2.6) standards. These documents can be obtained by
19 * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps
20 * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf
22 * For historical changelog please see:
23 * Documentation/ide/ChangeLog.ide-cd.1994-2004
26 #define IDECD_VERSION "5.00"
28 #include <linux/module.h>
29 #include <linux/types.h>
30 #include <linux/kernel.h>
31 #include <linux/delay.h>
32 #include <linux/timer.h>
33 #include <linux/slab.h>
34 #include <linux/interrupt.h>
35 #include <linux/errno.h>
36 #include <linux/cdrom.h>
37 #include <linux/ide.h>
38 #include <linux/completion.h>
39 #include <linux/mutex.h>
40 #include <linux/bcd.h>
42 /* 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 #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
57 #define ide_cd_g(disk) \
58 container_of((disk)->private_data, struct cdrom_info, driver)
60 static void ide_cd_release(struct kref *);
62 static struct cdrom_info *ide_cd_get(struct gendisk *disk)
64 struct cdrom_info *cd = NULL;
66 mutex_lock(&idecd_ref_mutex);
70 if (ide_device_get(cd->drive)) {
71 kref_put(&cd->kref, ide_cd_release);
75 mutex_unlock(&idecd_ref_mutex);
79 static void ide_cd_put(struct cdrom_info *cd)
81 mutex_lock(&idecd_ref_mutex);
82 ide_device_put(cd->drive);
83 kref_put(&cd->kref, ide_cd_release);
84 mutex_unlock(&idecd_ref_mutex);
88 * Generic packet command support and error handling routines.
91 /* Mark that we've seen a media change and invalidate our internal buffers. */
92 static void cdrom_saw_media_change(ide_drive_t *drive)
94 drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
95 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
98 static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
99 struct request_sense *sense)
103 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
106 switch (sense->sense_key) {
108 case RECOVERED_ERROR:
112 * don't care about tray state messages for e.g. capacity
113 * commands or in-progress or becoming ready
115 if (sense->asc == 0x3a || sense->asc == 0x04)
119 case ILLEGAL_REQUEST:
121 * don't log START_STOP unit with LoEj set, since we cannot
122 * reliably check if drive can auto-close
124 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
130 * Make good and sure we've seen this potential media change.
131 * Some drives (i.e. Creative) fail to present the correct sense
132 * key in the error register.
134 cdrom_saw_media_change(drive);
143 static void cdrom_analyze_sense_data(ide_drive_t *drive,
144 struct request *failed_command,
145 struct request_sense *sense)
147 unsigned long sector;
148 unsigned long bio_sectors;
149 struct cdrom_info *info = drive->driver_data;
151 if (!cdrom_log_sense(drive, failed_command, sense))
155 * If a read toc is executed for a CD-R or CD-RW medium where the first
156 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
159 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
160 if (sense->sense_key == 0x05 && sense->asc == 0x24)
164 if (sense->error_code == 0x70) {
165 switch (sense->sense_key) {
167 case VOLUME_OVERFLOW:
168 case ILLEGAL_REQUEST:
171 if (failed_command == NULL ||
172 !blk_fs_request(failed_command))
174 sector = (sense->information[0] << 24) |
175 (sense->information[1] << 16) |
176 (sense->information[2] << 8) |
177 (sense->information[3]);
179 if (drive->queue->hardsect_size == 2048)
180 /* device sector size is 2K */
183 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
184 sector &= ~(bio_sectors - 1);
186 if (sector < get_capacity(info->disk) &&
187 drive->probed_capacity - sector < 4 * 75)
188 set_capacity(info->disk, sector);
192 ide_cd_log_error(drive->name, failed_command, sense);
195 static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
196 struct request *failed_command)
198 struct cdrom_info *info = drive->driver_data;
199 struct request *rq = &info->request_sense_request;
202 sense = &info->sense_data;
204 /* stuff the sense request in front of our current request */
205 blk_rq_init(NULL, rq);
206 rq->cmd_type = REQ_TYPE_ATA_PC;
207 rq->rq_disk = info->disk;
210 rq->cmd[0] = GPCMD_REQUEST_SENSE;
214 rq->cmd_type = REQ_TYPE_SENSE;
215 rq->cmd_flags |= REQ_PREEMPT;
217 /* NOTE! Save the failed command in "rq->buffer" */
218 rq->buffer = (void *) failed_command;
220 ide_do_drive_cmd(drive, rq);
223 static void cdrom_end_request(ide_drive_t *drive, int uptodate)
225 struct request *rq = HWGROUP(drive)->rq;
226 int nsectors = rq->hard_cur_sectors;
228 if (blk_sense_request(rq) && uptodate) {
230 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
233 struct request *failed = (struct request *) rq->buffer;
234 struct cdrom_info *info = drive->driver_data;
235 void *sense = &info->sense_data;
240 sense = failed->sense;
241 failed->sense_len = rq->sense_len;
243 cdrom_analyze_sense_data(drive, failed, sense);
245 * now end the failed request
247 if (blk_fs_request(failed)) {
248 if (ide_end_dequeued_request(drive, failed, 0,
249 failed->hard_nr_sectors))
252 spin_lock_irqsave(&ide_lock, flags);
253 if (__blk_end_request(failed, -EIO,
256 spin_unlock_irqrestore(&ide_lock, flags);
259 cdrom_analyze_sense_data(drive, NULL, sense);
262 if (!rq->current_nr_sectors && blk_fs_request(rq))
264 /* make sure it's fully ended */
265 if (blk_pc_request(rq))
266 nsectors = (rq->data_len + 511) >> 9;
270 ide_end_request(drive, uptodate, nsectors);
273 static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
277 ide_dump_status(drive, msg, st);
282 * 0: if the request should be continued.
283 * 1: if the request was ended.
285 static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
287 ide_hwif_t *hwif = drive->hwif;
288 struct request *rq = hwif->hwgroup->rq;
289 int stat, err, sense_key;
291 /* check for errors */
292 stat = hwif->tp_ops->read_status(hwif);
297 if (OK_STAT(stat, good_stat, BAD_R_STAT))
300 /* get the IDE error register */
301 err = ide_read_error(drive);
302 sense_key = err >> 4;
305 printk(KERN_ERR "%s: missing rq in %s\n",
306 drive->name, __func__);
310 if (blk_sense_request(rq)) {
312 * We got an error trying to get sense info from the drive
313 * (probably while trying to recover from a former error).
316 rq->cmd_flags |= REQ_FAILED;
317 cdrom_end_request(drive, 0);
318 ide_error(drive, "request sense failure", stat);
321 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
322 /* All other functions, except for READ. */
325 * if we have an error, pass back CHECK_CONDITION as the
328 if (blk_pc_request(rq) && !rq->errors)
329 rq->errors = SAM_STAT_CHECK_CONDITION;
331 /* check for tray open */
332 if (sense_key == NOT_READY) {
333 cdrom_saw_media_change(drive);
334 } else if (sense_key == UNIT_ATTENTION) {
335 /* check for media change */
336 cdrom_saw_media_change(drive);
338 } else if (sense_key == ILLEGAL_REQUEST &&
339 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
341 * Don't print error message for this condition--
342 * SFF8090i indicates that 5/24/00 is the correct
343 * response to a request to close the tray if the
344 * drive doesn't have that capability.
345 * cdrom_log_sense() knows this!
347 } else if (!(rq->cmd_flags & REQ_QUIET)) {
348 /* otherwise, print an error */
349 ide_dump_status(drive, "packet command error", stat);
352 rq->cmd_flags |= REQ_FAILED;
355 * instead of playing games with moving completions around,
356 * remove failed request completely and end it when the
357 * request sense has completed
361 } else if (blk_fs_request(rq)) {
362 int do_end_request = 0;
364 /* handle errors from READ and WRITE requests */
366 if (blk_noretry_request(rq))
369 if (sense_key == NOT_READY) {
371 if (rq_data_dir(rq) == READ) {
372 cdrom_saw_media_change(drive);
374 /* fail the request */
375 printk(KERN_ERR "%s: tray open\n", drive->name);
378 struct cdrom_info *info = drive->driver_data;
381 * Allow the drive 5 seconds to recover, some
382 * devices will return this error while flushing
386 info->write_timeout = jiffies +
387 ATAPI_WAIT_WRITE_BUSY;
389 if (time_after(jiffies, info->write_timeout))
395 * take a breather relying on the unplug
396 * timer to kick us again
398 spin_lock_irqsave(&ide_lock, flags);
399 blk_plug_device(drive->queue);
400 spin_unlock_irqrestore(&ide_lock,
405 } else if (sense_key == UNIT_ATTENTION) {
407 cdrom_saw_media_change(drive);
410 * Arrange to retry the request but be sure to give up
411 * if we've retried too many times.
413 if (++rq->errors > ERROR_MAX)
415 } else if (sense_key == ILLEGAL_REQUEST ||
416 sense_key == DATA_PROTECT) {
418 * No point in retrying after an illegal request or data
421 ide_dump_status_no_sense(drive, "command error", stat);
423 } else if (sense_key == MEDIUM_ERROR) {
425 * No point in re-trying a zillion times on a bad
426 * sector. If we got here the error is not correctable.
428 ide_dump_status_no_sense(drive,
429 "media error (bad sector)",
432 } else if (sense_key == BLANK_CHECK) {
433 /* disk appears blank ?? */
434 ide_dump_status_no_sense(drive, "media error (blank)",
437 } else if ((err & ~ABRT_ERR) != 0) {
438 /* go to the default handler for other errors */
439 ide_error(drive, "cdrom_decode_status", stat);
441 } else if ((++rq->errors > ERROR_MAX)) {
442 /* we've racked up too many retries, abort */
447 * End a request through request sense analysis when we have
448 * sense data. We need this in order to perform end of media
455 * If we got a CHECK_CONDITION status, queue
456 * a request sense command.
459 cdrom_queue_request_sense(drive, NULL, NULL);
461 blk_dump_rq_flags(rq, "ide-cd: bad rq");
462 cdrom_end_request(drive, 0);
465 /* retry, or handle the next request */
469 if (stat & ERR_STAT) {
472 spin_lock_irqsave(&ide_lock, flags);
473 blkdev_dequeue_request(rq);
474 HWGROUP(drive)->rq = NULL;
475 spin_unlock_irqrestore(&ide_lock, flags);
477 cdrom_queue_request_sense(drive, rq->sense, rq);
479 cdrom_end_request(drive, 0);
484 static int cdrom_timer_expiry(ide_drive_t *drive)
486 struct request *rq = HWGROUP(drive)->rq;
487 unsigned long wait = 0;
490 * Some commands are *slow* and normally take a long time to complete.
491 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
492 * commands/drives support that. Let ide_timer_expiry keep polling us
495 switch (rq->cmd[0]) {
497 case GPCMD_FORMAT_UNIT:
498 case GPCMD_RESERVE_RZONE_TRACK:
499 case GPCMD_CLOSE_TRACK:
500 case GPCMD_FLUSH_CACHE:
501 wait = ATAPI_WAIT_PC;
504 if (!(rq->cmd_flags & REQ_QUIET))
505 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n",
514 * Set up the device registers for transferring a packet command on DEV,
515 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
516 * which actually transfers the command to the drive. If this is a
517 * drq_interrupt device, this routine will arrange for HANDLER to be
518 * called when the interrupt from the drive arrives. Otherwise, HANDLER
519 * will be called immediately after the drive is prepared for the transfer.
521 static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
523 ide_handler_t *handler)
525 struct cdrom_info *info = drive->driver_data;
526 ide_hwif_t *hwif = drive->hwif;
528 /* FIXME: for Virtual DMA we must check harder */
530 info->dma = !hwif->dma_ops->dma_setup(drive);
532 /* set up the controller registers */
533 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL,
536 if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
537 /* waiting for CDB interrupt, not DMA yet. */
539 drive->waiting_for_dma = 0;
542 ide_execute_command(drive, WIN_PACKETCMD, handler,
543 ATAPI_WAIT_PC, cdrom_timer_expiry);
546 ide_execute_pkt_cmd(drive);
548 return (*handler) (drive);
553 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
554 * registers must have already been prepared by cdrom_start_packet_command.
555 * HANDLER is the interrupt handler to call when the command completes or
556 * there's data ready.
558 #define ATAPI_MIN_CDB_BYTES 12
559 static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
561 ide_handler_t *handler)
563 ide_hwif_t *hwif = drive->hwif;
565 struct cdrom_info *info = drive->driver_data;
566 ide_startstop_t startstop;
568 if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
570 * Here we should have been called after receiving an interrupt
571 * from the device. DRQ should how be set.
574 /* check for errors */
575 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
578 /* ok, next interrupt will be DMA interrupt */
580 drive->waiting_for_dma = 1;
582 /* otherwise, we must wait for DRQ to get set */
583 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
584 BUSY_STAT, WAIT_READY))
588 /* arm the interrupt handler */
589 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
591 /* ATAPI commands get padded out to 12 bytes minimum */
592 cmd_len = COMMAND_SIZE(rq->cmd[0]);
593 if (cmd_len < ATAPI_MIN_CDB_BYTES)
594 cmd_len = ATAPI_MIN_CDB_BYTES;
596 /* send the command to the device */
597 hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len);
599 /* start the DMA if need be */
601 hwif->dma_ops->dma_start(drive);
607 * Check the contents of the interrupt reason register from the cdrom
608 * and attempt to recover if there are problems. Returns 0 if everything's
609 * ok; nonzero if the request has been terminated.
611 static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
612 int len, int ireason, int rw)
614 ide_hwif_t *hwif = drive->hwif;
617 * ireason == 0: the drive wants to receive data from us
618 * ireason == 2: the drive is expecting to transfer data to us
620 if (ireason == (!rw << 1))
622 else if (ireason == (rw << 1)) {
625 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
626 drive->name, __func__);
628 ide_pad_transfer(drive, rw, len);
629 } else if (rw == 0 && ireason == 1) {
631 * Some drives (ASUS) seem to tell us that status info is
632 * available. Just get it and ignore.
634 (void)hwif->tp_ops->read_status(hwif);
637 /* drive wants a command packet, or invalid ireason... */
638 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
639 drive->name, __func__, ireason);
642 if (rq->cmd_type == REQ_TYPE_ATA_PC)
643 rq->cmd_flags |= REQ_FAILED;
645 cdrom_end_request(drive, 0);
650 * Assume that the drive will always provide data in multiples of at least
651 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
653 static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
655 if ((len % SECTOR_SIZE) == 0)
658 printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
659 drive->name, __func__, len);
661 if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
662 printk(KERN_ERR " This drive is not supported by "
663 "this version of the driver\n");
665 printk(KERN_ERR " Trying to limit transfer sizes\n");
666 drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
672 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
674 static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
677 if (rq_data_dir(rq) == READ) {
678 unsigned short sectors_per_frame =
679 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
680 int nskip = rq->sector & (sectors_per_frame - 1);
683 * If the requested sector doesn't start on a frame boundary,
684 * we must adjust the start of the transfer so that it does,
685 * and remember to skip the first few sectors.
687 * If the rq->current_nr_sectors field is larger than the size
688 * of the buffer, it will mean that we're to skip a number of
689 * sectors equal to the amount by which rq->current_nr_sectors
690 * is larger than the buffer size.
693 /* sanity check... */
694 if (rq->current_nr_sectors !=
695 bio_cur_sectors(rq->bio)) {
696 printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
697 drive->name, __func__,
698 rq->current_nr_sectors);
699 cdrom_end_request(drive, 0);
702 rq->current_nr_sectors += nskip;
707 /* the immediate bit */
710 /* set up the command */
711 rq->timeout = ATAPI_WAIT_PC;
717 * Routine to send a read/write packet command to the drive. This is usually
718 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
719 * devices, it is called from an interrupt when the drive is ready to accept
722 static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
724 struct request *rq = drive->hwif->hwgroup->rq;
726 /* send the command to the drive and return */
727 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
730 #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
731 #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
732 #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
734 static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
736 struct cdrom_info *info = drive->driver_data;
738 static int retry = 10;
740 if (cdrom_decode_status(drive, 0, &stat))
743 drive->atapi_flags |= IDE_AFLAG_SEEKING;
745 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
747 drive->dsc_overlap = 0;
752 static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
754 sector_t frame = rq->sector;
756 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
758 memset(rq->cmd, 0, BLK_MAX_CDB);
759 rq->cmd[0] = GPCMD_SEEK;
760 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
762 rq->timeout = ATAPI_WAIT_PC;
765 static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
767 struct request *rq = drive->hwif->hwgroup->rq;
769 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
773 * Fix up a possibly partially-processed request so that we can start it over
774 * entirely, or even put it back on the request queue.
776 static void restore_request(struct request *rq)
778 if (rq->buffer != bio_data(rq->bio)) {
780 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
782 rq->buffer = bio_data(rq->bio);
786 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
787 rq->hard_cur_sectors = rq->current_nr_sectors;
788 rq->hard_nr_sectors = rq->nr_sectors;
789 rq->hard_sector = rq->sector;
790 rq->q->prep_rq_fn(rq->q, rq);
794 * All other packet commands.
796 static void ide_cd_request_sense_fixup(struct request *rq)
799 * Some of the trailing request sense fields are optional,
800 * and some drives don't send them. Sigh.
802 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
803 rq->data_len > 0 && rq->data_len <= 5)
804 while (rq->data_len > 0) {
805 *(u8 *)rq->data++ = 0;
810 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
811 int write, void *buffer, unsigned *bufflen,
812 struct request_sense *sense, int timeout,
813 unsigned int cmd_flags)
815 struct cdrom_info *info = drive->driver_data;
816 struct request_sense local_sense;
818 unsigned int flags = 0;
821 sense = &local_sense;
823 /* start of retry loop */
828 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
830 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
831 rq->cmd_type = REQ_TYPE_ATA_PC;
833 rq->cmd_flags |= cmd_flags;
834 rq->timeout = timeout;
837 rq->data_len = *bufflen;
840 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
843 *bufflen = rq->data_len;
845 flags = rq->cmd_flags;
849 * FIXME: we should probably abort/retry or something in case of
852 if (flags & REQ_FAILED) {
854 * The request failed. Retry if it was due to a unit
855 * attention status (usually means media was changed).
857 struct request_sense *reqbuf = sense;
859 if (reqbuf->sense_key == UNIT_ATTENTION)
860 cdrom_saw_media_change(drive);
861 else if (reqbuf->sense_key == NOT_READY &&
862 reqbuf->asc == 4 && reqbuf->ascq != 4) {
864 * The drive is in the process of loading
865 * a disk. Retry, but wait a little to give
866 * the drive time to complete the load.
870 /* otherwise, don't retry */
876 /* end of retry loop */
877 } while ((flags & REQ_FAILED) && retries >= 0);
879 /* return an error if the command failed */
880 return (flags & REQ_FAILED) ? -EIO : 0;
884 * Called from blk_end_request_callback() after the data of the request is
885 * completed and before the request itself is completed. By returning value '1',
886 * blk_end_request_callback() returns immediately without completing it.
888 static int cdrom_newpc_intr_dummy_cb(struct request *rq)
893 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
895 ide_hwif_t *hwif = drive->hwif;
896 struct cdrom_info *info = drive->driver_data;
897 struct request *rq = HWGROUP(drive)->rq;
898 xfer_func_t *xferfunc;
899 ide_expiry_t *expiry = NULL;
900 int dma_error = 0, dma, stat, thislen, uptodate = 0;
901 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
902 unsigned int timeout;
906 /* check for errors */
910 dma_error = hwif->dma_ops->dma_end(drive);
912 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
913 write ? "write" : "read");
918 if (cdrom_decode_status(drive, 0, &stat))
921 /* using dma, transfer is complete now */
924 return ide_error(drive, "dma error", stat);
925 if (blk_fs_request(rq)) {
926 ide_end_request(drive, 1, rq->nr_sectors);
932 ide_read_bcount_and_ireason(drive, &len, &ireason);
934 thislen = blk_fs_request(rq) ? len : rq->data_len;
938 /* If DRQ is clear, the command has completed. */
939 if ((stat & DRQ_STAT) == 0) {
940 if (blk_fs_request(rq)) {
942 * If we're not done reading/writing, complain.
943 * Otherwise, complete the command normally.
946 if (rq->current_nr_sectors > 0) {
947 printk(KERN_ERR "%s: %s: data underrun "
949 drive->name, __func__,
950 rq->current_nr_sectors);
952 rq->cmd_flags |= REQ_FAILED;
955 cdrom_end_request(drive, uptodate);
957 } else if (!blk_pc_request(rq)) {
958 ide_cd_request_sense_fixup(rq);
959 /* complain if we still have data left to transfer */
960 uptodate = rq->data_len ? 0 : 1;
965 /* check which way to transfer data */
966 if (ide_cd_check_ireason(drive, rq, len, ireason, write))
969 if (blk_fs_request(rq)) {
973 if (ide_cd_check_transfer_size(drive, len)) {
974 cdrom_end_request(drive, 0);
979 * First, figure out if we need to bit-bucket
980 * any of the leading sectors.
982 nskip = min_t(int, rq->current_nr_sectors
983 - bio_cur_sectors(rq->bio),
986 ide_pad_transfer(drive, write, nskip << 9);
987 rq->current_nr_sectors -= nskip;
988 thislen -= (nskip << 9);
995 xferfunc = hwif->tp_ops->output_data;
998 xferfunc = hwif->tp_ops->input_data;
1002 while (thislen > 0) {
1003 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
1004 int blen = rq->data_len;
1008 if (blk_fs_request(rq)) {
1010 blen = rq->current_nr_sectors << 9;
1012 ptr = bio_data(rq->bio);
1013 blen = bio_iovec(rq->bio)->bv_len;
1018 if (blk_fs_request(rq) && !write)
1020 * If the buffers are full, pipe the rest into
1023 ide_pad_transfer(drive, 0, thislen);
1025 printk(KERN_ERR "%s: confused, missing data\n",
1027 blk_dump_rq_flags(rq, rq_data_dir(rq)
1028 ? "cdrom_newpc_intr, write"
1029 : "cdrom_newpc_intr, read");
1037 xferfunc(drive, NULL, ptr, blen);
1042 if (blk_fs_request(rq)) {
1044 rq->nr_sectors -= (blen >> 9);
1045 rq->current_nr_sectors -= (blen >> 9);
1046 rq->sector += (blen >> 9);
1048 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1049 cdrom_end_request(drive, 1);
1051 rq->data_len -= blen;
1054 * The request can't be completed until DRQ is cleared.
1055 * So complete the data, but don't complete the request
1056 * using the dummy function for the callback feature
1057 * of blk_end_request_callback().
1060 blk_end_request_callback(rq, 0, blen,
1061 cdrom_newpc_intr_dummy_cb);
1065 if (!write && blk_sense_request(rq))
1066 rq->sense_len += blen;
1069 /* pad, if necessary */
1070 if (!blk_fs_request(rq) && len > 0)
1071 ide_pad_transfer(drive, write, len);
1073 if (blk_pc_request(rq)) {
1074 timeout = rq->timeout;
1076 timeout = ATAPI_WAIT_PC;
1077 if (!blk_fs_request(rq))
1078 expiry = cdrom_timer_expiry;
1081 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
1085 if (blk_pc_request(rq)) {
1086 unsigned long flags;
1087 unsigned int dlen = rq->data_len;
1092 spin_lock_irqsave(&ide_lock, flags);
1093 if (__blk_end_request(rq, 0, dlen))
1095 HWGROUP(drive)->rq = NULL;
1096 spin_unlock_irqrestore(&ide_lock, flags);
1099 rq->cmd_flags |= REQ_FAILED;
1100 cdrom_end_request(drive, uptodate);
1105 static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
1107 struct cdrom_info *cd = drive->driver_data;
1108 int write = rq_data_dir(rq) == WRITE;
1109 unsigned short sectors_per_frame =
1110 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1113 /* disk has become write protected */
1114 if (cd->disk->policy) {
1115 cdrom_end_request(drive, 0);
1120 * We may be retrying this request after an error. Fix up any
1121 * weirdness which might be present in the request packet.
1123 restore_request(rq);
1126 /* use DMA, if possible / writes *must* be hardware frame aligned */
1127 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1128 (rq->sector & (sectors_per_frame - 1))) {
1130 cdrom_end_request(drive, 0);
1135 cd->dma = drive->using_dma;
1138 cd->devinfo.media_written = 1;
1143 static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1145 struct request *rq = HWGROUP(drive)->rq;
1147 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1150 static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1152 struct cdrom_info *info = drive->driver_data;
1154 if (blk_pc_request(rq))
1155 rq->cmd_flags |= REQ_QUIET;
1157 rq->cmd_flags &= ~REQ_FAILED;
1162 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
1163 struct request_queue *q = drive->queue;
1164 unsigned int alignment;
1166 unsigned long stack_mask = ~(THREAD_SIZE - 1);
1169 addr = (unsigned long)bio_data(rq->bio);
1171 addr = (unsigned long)rq->data;
1173 info->dma = drive->using_dma;
1176 * check if dma is safe
1178 * NOTE! The "len" and "addr" checks should possibly have
1181 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
1182 if (addr & alignment || rq->data_len & alignment)
1185 if (!((addr & stack_mask) ^
1186 ((unsigned long)current->stack & stack_mask)))
1192 * cdrom driver request routine.
1194 static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
1197 struct cdrom_info *info = drive->driver_data;
1201 if (blk_fs_request(rq)) {
1202 if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
1203 ide_hwif_t *hwif = drive->hwif;
1204 unsigned long elapsed = jiffies - info->start_seek;
1205 int stat = hwif->tp_ops->read_status(hwif);
1207 if ((stat & SEEK_STAT) != SEEK_STAT) {
1208 if (elapsed < IDECD_SEEK_TIMEOUT) {
1209 ide_stall_queue(drive,
1213 printk(KERN_ERR "%s: DSC timeout\n",
1216 drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
1218 if (rq_data_dir(rq) == READ &&
1219 IDE_LARGE_SEEK(info->last_block, block,
1220 IDECD_SEEK_THRESHOLD) &&
1221 drive->dsc_overlap) {
1223 fn = cdrom_start_seek_continuation;
1226 info->start_seek = jiffies;
1228 ide_cd_prepare_seek_request(drive, rq);
1231 fn = cdrom_start_rw_cont;
1233 if (cdrom_start_rw(drive, rq) == ide_stopped)
1236 if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
1239 info->last_block = block;
1240 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
1241 rq->cmd_type == REQ_TYPE_ATA_PC) {
1242 xferlen = rq->data_len;
1243 fn = cdrom_do_newpc_cont;
1246 rq->timeout = ATAPI_WAIT_PC;
1248 cdrom_do_block_pc(drive, rq);
1249 } else if (blk_special_request(rq)) {
1250 /* right now this can only be a reset... */
1251 cdrom_end_request(drive, 1);
1254 blk_dump_rq_flags(rq, "ide-cd bad flags");
1255 cdrom_end_request(drive, 0);
1259 return cdrom_start_packet_command(drive, xferlen, fn);
1265 * Routines which queue packet commands take as a final argument a pointer to a
1266 * request_sense struct. If execution of the command results in an error with a
1267 * CHECK CONDITION status, this structure will be filled with the results of the
1268 * subsequent request sense command. The pointer can also be NULL, in which case
1269 * no sense information is returned.
1271 static void msf_from_bcd(struct atapi_msf *msf)
1273 msf->minute = BCD2BIN(msf->minute);
1274 msf->second = BCD2BIN(msf->second);
1275 msf->frame = BCD2BIN(msf->frame);
1278 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
1280 struct cdrom_info *info = drive->driver_data;
1281 struct cdrom_device_info *cdi = &info->devinfo;
1282 unsigned char cmd[BLK_MAX_CDB];
1284 memset(cmd, 0, BLK_MAX_CDB);
1285 cmd[0] = GPCMD_TEST_UNIT_READY;
1288 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1289 * instead of supporting the LOAD_UNLOAD opcode.
1291 cmd[7] = cdi->sanyo_slot % 3;
1293 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
1296 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1297 unsigned long *sectors_per_frame,
1298 struct request_sense *sense)
1306 unsigned char cmd[BLK_MAX_CDB];
1307 unsigned len = sizeof(capbuf);
1309 memset(cmd, 0, BLK_MAX_CDB);
1310 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1312 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1318 * Sanity check the given block size
1320 switch (capbuf.blocklen) {
1321 case __constant_cpu_to_be32(512):
1322 case __constant_cpu_to_be32(1024):
1323 case __constant_cpu_to_be32(2048):
1324 case __constant_cpu_to_be32(4096):
1327 printk(KERN_ERR "%s: weird block size %u\n",
1328 drive->name, capbuf.blocklen);
1329 printk(KERN_ERR "%s: default to 2kb block size\n",
1331 capbuf.blocklen = __constant_cpu_to_be32(2048);
1335 *capacity = 1 + be32_to_cpu(capbuf.lba);
1336 *sectors_per_frame = be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1340 static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1341 int format, char *buf, int buflen,
1342 struct request_sense *sense)
1344 unsigned char cmd[BLK_MAX_CDB];
1346 memset(cmd, 0, BLK_MAX_CDB);
1348 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1350 cmd[7] = (buflen >> 8);
1351 cmd[8] = (buflen & 0xff);
1352 cmd[9] = (format << 6);
1357 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
1360 /* Try to read the entire TOC for the disk into our internal buffer. */
1361 int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
1363 int stat, ntracks, i;
1364 struct cdrom_info *info = drive->driver_data;
1365 struct cdrom_device_info *cdi = &info->devinfo;
1366 struct atapi_toc *toc = info->toc;
1368 struct atapi_toc_header hdr;
1369 struct atapi_toc_entry ent;
1372 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1375 /* try to allocate space */
1376 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1378 printk(KERN_ERR "%s: No cdrom TOC buffer!\n",
1386 * Check to see if the existing data is still valid. If it is,
1389 (void) cdrom_check_status(drive, sense);
1391 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1394 /* try to get the total cdrom capacity and sector size */
1395 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame,
1398 toc->capacity = 0x1fffff;
1400 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1401 /* save a private copy of the TOC capacity for error handling */
1402 drive->probed_capacity = toc->capacity * sectors_per_frame;
1404 blk_queue_hardsect_size(drive->queue,
1405 sectors_per_frame << SECTOR_BITS);
1407 /* first read just the header, so we know how long the TOC is */
1408 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1409 sizeof(struct atapi_toc_header), sense);
1413 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1414 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1415 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1418 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1421 if (ntracks > MAX_TRACKS)
1422 ntracks = MAX_TRACKS;
1424 /* now read the whole schmeer */
1425 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1427 sizeof(struct atapi_toc_header) +
1429 sizeof(struct atapi_toc_entry), sense);
1431 if (stat && toc->hdr.first_track > 1) {
1433 * Cds with CDI tracks only don't have any TOC entries, despite
1434 * of this the returned values are
1435 * first_track == last_track = number of CDI tracks + 1,
1436 * so that this case is indistinguishable from the same layout
1437 * plus an additional audio track. If we get an error for the
1438 * regular case, we assume a CDI without additional audio
1439 * tracks. In this case the readable TOC is empty (CDI tracks
1440 * are not included) and only holds the Leadout entry.
1445 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1447 sizeof(struct atapi_toc_header) +
1449 sizeof(struct atapi_toc_entry),
1454 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1455 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1456 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
1458 toc->hdr.first_track = CDROM_LEADOUT;
1459 toc->hdr.last_track = CDROM_LEADOUT;
1466 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1468 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1469 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1470 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
1473 for (i = 0; i <= ntracks; i++) {
1474 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1475 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1476 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
1477 msf_from_bcd(&toc->ent[i].addr.msf);
1479 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1480 toc->ent[i].addr.msf.second,
1481 toc->ent[i].addr.msf.frame);
1484 if (toc->hdr.first_track != CDROM_LEADOUT) {
1485 /* read the multisession information */
1486 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1487 sizeof(ms_tmp), sense);
1491 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1493 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1494 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1495 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1498 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1499 /* re-read multisession information using MSF format */
1500 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1501 sizeof(ms_tmp), sense);
1505 msf_from_bcd(&ms_tmp.ent.addr.msf);
1506 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1507 ms_tmp.ent.addr.msf.second,
1508 ms_tmp.ent.addr.msf.frame);
1511 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1513 /* now try to get the total cdrom capacity */
1514 stat = cdrom_get_last_written(cdi, &last_written);
1515 if (!stat && (last_written > toc->capacity)) {
1516 toc->capacity = last_written;
1517 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1518 drive->probed_capacity = toc->capacity * sectors_per_frame;
1521 /* Remember that we've read this stuff. */
1522 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1527 int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1529 struct cdrom_info *info = drive->driver_data;
1530 struct cdrom_device_info *cdi = &info->devinfo;
1531 struct packet_command cgc;
1532 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1534 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1535 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1537 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1539 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1540 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1543 } while (--attempts);
1547 void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1549 struct cdrom_info *cd = drive->driver_data;
1550 u16 curspeed, maxspeed;
1552 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1553 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1554 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1556 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1557 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1560 cd->current_speed = (curspeed + (176/2)) / 176;
1561 cd->max_speed = (maxspeed + (176/2)) / 176;
1564 #define IDE_CD_CAPABILITIES \
1565 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1566 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1567 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1568 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1569 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1571 static struct cdrom_device_ops ide_cdrom_dops = {
1572 .open = ide_cdrom_open_real,
1573 .release = ide_cdrom_release_real,
1574 .drive_status = ide_cdrom_drive_status,
1575 .media_changed = ide_cdrom_check_media_change_real,
1576 .tray_move = ide_cdrom_tray_move,
1577 .lock_door = ide_cdrom_lock_door,
1578 .select_speed = ide_cdrom_select_speed,
1579 .get_last_session = ide_cdrom_get_last_session,
1580 .get_mcn = ide_cdrom_get_mcn,
1581 .reset = ide_cdrom_reset,
1582 .audio_ioctl = ide_cdrom_audio_ioctl,
1583 .capability = IDE_CD_CAPABILITIES,
1584 .generic_packet = ide_cdrom_packet,
1587 static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1589 struct cdrom_info *info = drive->driver_data;
1590 struct cdrom_device_info *devinfo = &info->devinfo;
1592 devinfo->ops = &ide_cdrom_dops;
1593 devinfo->speed = info->current_speed;
1594 devinfo->capacity = nslots;
1595 devinfo->handle = drive;
1596 strcpy(devinfo->name, drive->name);
1598 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1599 devinfo->mask |= CDC_SELECT_SPEED;
1601 devinfo->disk = info->disk;
1602 return register_cdrom(devinfo);
1605 static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1607 struct cdrom_info *cd = drive->driver_data;
1608 struct cdrom_device_info *cdi = &cd->devinfo;
1609 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1610 mechtype_t mechtype;
1613 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1614 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1615 CDC_MO_DRIVE | CDC_RAM);
1617 if (drive->media == ide_optical) {
1618 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1619 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n",
1624 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1625 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1626 cdi->mask &= ~CDC_PLAY_AUDIO;
1631 * We have to cheat a little here. the packet will eventually be queued
1632 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1633 * Since this device hasn't been registered with the Uniform layer yet,
1634 * it can't do this. Same goes for cdi->ops.
1636 cdi->handle = drive;
1637 cdi->ops = &ide_cdrom_dops;
1639 if (ide_cdrom_get_capabilities(drive, buf))
1642 if ((buf[8 + 6] & 0x01) == 0)
1643 drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK;
1644 if (buf[8 + 6] & 0x08)
1645 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1646 if (buf[8 + 3] & 0x01)
1647 cdi->mask &= ~CDC_CD_R;
1648 if (buf[8 + 3] & 0x02)
1649 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1650 if (buf[8 + 2] & 0x38)
1651 cdi->mask &= ~CDC_DVD;
1652 if (buf[8 + 3] & 0x20)
1653 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1654 if (buf[8 + 3] & 0x10)
1655 cdi->mask &= ~CDC_DVD_R;
1656 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1657 cdi->mask &= ~CDC_PLAY_AUDIO;
1659 mechtype = buf[8 + 6] >> 5;
1660 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
1661 cdi->mask |= CDC_CLOSE_TRAY;
1663 if (cdi->sanyo_slot > 0) {
1664 cdi->mask &= ~CDC_SELECT_DISC;
1666 } else if (mechtype == mechtype_individual_changer ||
1667 mechtype == mechtype_cartridge_changer) {
1668 nslots = cdrom_number_of_slots(cdi);
1670 cdi->mask &= ~CDC_SELECT_DISC;
1673 ide_cdrom_update_speed(drive, buf);
1675 printk(KERN_INFO "%s: ATAPI", drive->name);
1677 /* don't print speed if the drive reported 0 */
1679 printk(KERN_CONT " %dX", cd->max_speed);
1681 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1683 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1684 printk(KERN_CONT " DVD%s%s",
1685 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1686 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
1688 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1689 printk(KERN_CONT " CD%s%s",
1690 (cdi->mask & CDC_CD_R) ? "" : "-R",
1691 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1693 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1694 printk(KERN_CONT " changer w/%d slots", nslots);
1696 printk(KERN_CONT " drive");
1698 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpup((__be16 *)&buf[8 + 12]));
1703 /* standard prep_rq_fn that builds 10 byte cmds */
1704 static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
1706 int hard_sect = queue_hardsect_size(q);
1707 long block = (long)rq->hard_sector / (hard_sect >> 9);
1708 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1710 memset(rq->cmd, 0, BLK_MAX_CDB);
1712 if (rq_data_dir(rq) == READ)
1713 rq->cmd[0] = GPCMD_READ_10;
1715 rq->cmd[0] = GPCMD_WRITE_10;
1720 rq->cmd[2] = (block >> 24) & 0xff;
1721 rq->cmd[3] = (block >> 16) & 0xff;
1722 rq->cmd[4] = (block >> 8) & 0xff;
1723 rq->cmd[5] = block & 0xff;
1726 * and transfer length
1728 rq->cmd[7] = (blocks >> 8) & 0xff;
1729 rq->cmd[8] = blocks & 0xff;
1735 * Most of the SCSI commands are supported directly by ATAPI devices.
1736 * This transform handles the few exceptions.
1738 static int ide_cdrom_prep_pc(struct request *rq)
1742 /* transform 6-byte read/write commands to the 10-byte version */
1743 if (c[0] == READ_6 || c[0] == WRITE_6) {
1750 c[0] += (READ_10 - READ_6);
1756 * it's silly to pretend we understand 6-byte sense commands, just
1757 * reject with ILLEGAL_REQUEST and the caller should take the
1758 * appropriate action
1760 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1761 rq->errors = ILLEGAL_REQUEST;
1762 return BLKPREP_KILL;
1768 static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
1770 if (blk_fs_request(rq))
1771 return ide_cdrom_prep_fs(q, rq);
1772 else if (blk_pc_request(rq))
1773 return ide_cdrom_prep_pc(rq);
1778 struct cd_list_entry {
1779 const char *id_model;
1780 const char *id_firmware;
1781 unsigned int cd_flags;
1784 #ifdef CONFIG_IDE_PROC_FS
1785 static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1787 unsigned long capacity, sectors_per_frame;
1789 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL))
1792 return capacity * sectors_per_frame;
1795 static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1796 int count, int *eof, void *data)
1798 ide_drive_t *drive = data;
1801 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1802 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1805 static ide_proc_entry_t idecd_proc[] = {
1806 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1807 { NULL, 0, NULL, NULL }
1810 static void ide_cdrom_add_settings(ide_drive_t *drive)
1812 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
1813 &drive->dsc_overlap, NULL);
1816 static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
1819 static const struct cd_list_entry ide_cd_quirks_list[] = {
1820 /* Limit transfer size per interrupt. */
1821 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1822 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1823 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1824 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1825 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1826 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1827 IDE_AFLAG_PRE_ATAPI12, },
1828 /* Vertos 300, some versions of this drive like to talk BCD. */
1829 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1830 /* Vertos 600 ESD. */
1831 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1833 * Sanyo 3 CD changer uses a non-standard command for CD changing
1834 * (by default standard ATAPI support for CD changers is used).
1836 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1837 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1838 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1839 /* Stingray 8X CD-ROM. */
1840 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1842 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1843 * mode sense page capabilities size, but older drives break.
1845 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1846 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1847 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1848 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1850 * Some drives used by Apple don't advertise audio play
1851 * but they do support reading TOC & audio datas.
1853 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1854 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1855 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1856 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1857 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1861 static unsigned int ide_cd_flags(struct hd_driveid *id)
1863 const struct cd_list_entry *cle = ide_cd_quirks_list;
1865 while (cle->id_model) {
1866 if (strcmp(cle->id_model, id->model) == 0 &&
1867 (cle->id_firmware == NULL ||
1868 strstr(id->fw_rev, cle->id_firmware)))
1869 return cle->cd_flags;
1876 static int ide_cdrom_setup(ide_drive_t *drive)
1878 struct cdrom_info *cd = drive->driver_data;
1879 struct cdrom_device_info *cdi = &cd->devinfo;
1880 struct hd_driveid *id = drive->id;
1883 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1884 blk_queue_dma_alignment(drive->queue, 31);
1885 blk_queue_update_dma_pad(drive->queue, 15);
1886 drive->queue->unplug_delay = (1 * HZ) / 1000;
1887 if (!drive->queue->unplug_delay)
1888 drive->queue->unplug_delay = 1;
1890 drive->special.all = 0;
1892 drive->atapi_flags = IDE_AFLAG_MEDIA_CHANGED | IDE_AFLAG_NO_EJECT |
1895 if ((id->config & 0x0060) == 0x20)
1896 drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
1898 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1899 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
1900 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1901 IDE_AFLAG_TOCADDR_AS_BCD);
1902 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1903 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
1904 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1905 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1906 /* 3 => use CD in slot 0 */
1907 cdi->sanyo_slot = 3;
1909 nslots = ide_cdrom_probe_capabilities(drive);
1911 /* set correct block size */
1912 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1914 drive->dsc_overlap = (drive->next != drive);
1916 if (ide_cdrom_register(drive, nslots)) {
1917 printk(KERN_ERR "%s: %s failed to register device with the"
1918 " cdrom driver.\n", drive->name, __func__);
1919 cd->devinfo.handle = NULL;
1922 ide_cdrom_add_settings(drive);
1926 static void ide_cd_remove(ide_drive_t *drive)
1928 struct cdrom_info *info = drive->driver_data;
1930 ide_proc_unregister_driver(drive, info->driver);
1932 del_gendisk(info->disk);
1937 static void ide_cd_release(struct kref *kref)
1939 struct cdrom_info *info = to_ide_cd(kref);
1940 struct cdrom_device_info *devinfo = &info->devinfo;
1941 ide_drive_t *drive = info->drive;
1942 struct gendisk *g = info->disk;
1945 if (devinfo->handle == drive)
1946 unregister_cdrom(devinfo);
1947 drive->dsc_overlap = 0;
1948 drive->driver_data = NULL;
1949 blk_queue_prep_rq(drive->queue, NULL);
1950 g->private_data = NULL;
1955 static int ide_cd_probe(ide_drive_t *);
1957 static ide_driver_t ide_cdrom_driver = {
1959 .owner = THIS_MODULE,
1960 .name = "ide-cdrom",
1961 .bus = &ide_bus_type,
1963 .probe = ide_cd_probe,
1964 .remove = ide_cd_remove,
1965 .version = IDECD_VERSION,
1967 .supports_dsc_overlap = 1,
1968 .do_request = ide_cd_do_request,
1969 .end_request = ide_end_request,
1970 .error = __ide_error,
1971 #ifdef CONFIG_IDE_PROC_FS
1976 static int idecd_open(struct inode *inode, struct file *file)
1978 struct gendisk *disk = inode->i_bdev->bd_disk;
1979 struct cdrom_info *info;
1982 info = ide_cd_get(disk);
1986 rc = cdrom_open(&info->devinfo, inode, file);
1994 static int idecd_release(struct inode *inode, struct file *file)
1996 struct gendisk *disk = inode->i_bdev->bd_disk;
1997 struct cdrom_info *info = ide_cd_g(disk);
1999 cdrom_release(&info->devinfo, file);
2006 static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2008 struct packet_command cgc;
2013 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2016 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2018 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2022 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2023 return cdrom_mode_select(cdi, &cgc);
2026 static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2028 struct packet_command cgc;
2033 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2035 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2039 spindown = buffer[11] & 0x0f;
2040 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
2045 static int idecd_ioctl(struct inode *inode, struct file *file,
2046 unsigned int cmd, unsigned long arg)
2048 struct block_device *bdev = inode->i_bdev;
2049 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2053 case CDROMSETSPINDOWN:
2054 return idecd_set_spindown(&info->devinfo, arg);
2055 case CDROMGETSPINDOWN:
2056 return idecd_get_spindown(&info->devinfo, arg);
2061 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
2063 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2068 static int idecd_media_changed(struct gendisk *disk)
2070 struct cdrom_info *info = ide_cd_g(disk);
2071 return cdrom_media_changed(&info->devinfo);
2074 static int idecd_revalidate_disk(struct gendisk *disk)
2076 struct cdrom_info *info = ide_cd_g(disk);
2077 struct request_sense sense;
2079 ide_cd_read_toc(info->drive, &sense);
2084 static struct block_device_operations idecd_ops = {
2085 .owner = THIS_MODULE,
2087 .release = idecd_release,
2088 .ioctl = idecd_ioctl,
2089 .media_changed = idecd_media_changed,
2090 .revalidate_disk = idecd_revalidate_disk
2093 /* module options */
2094 static char *ignore;
2096 module_param(ignore, charp, 0400);
2097 MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2099 static int ide_cd_probe(ide_drive_t *drive)
2101 struct cdrom_info *info;
2103 struct request_sense sense;
2105 if (!strstr("ide-cdrom", drive->driver_req))
2107 if (!drive->present)
2109 if (drive->media != ide_cdrom && drive->media != ide_optical)
2111 /* skip drives that we were told to ignore */
2112 if (ignore != NULL) {
2113 if (strstr(ignore, drive->name)) {
2114 printk(KERN_INFO "ide-cd: ignoring drive %s\n",
2119 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
2121 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
2126 g = alloc_disk(1 << PARTN_BITS);
2130 ide_init_disk(g, drive);
2132 ide_proc_register_driver(drive, &ide_cdrom_driver);
2134 kref_init(&info->kref);
2136 info->drive = drive;
2137 info->driver = &ide_cdrom_driver;
2140 g->private_data = &info->driver;
2142 drive->driver_data = info;
2145 g->driverfs_dev = &drive->gendev;
2146 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2147 if (ide_cdrom_setup(drive)) {
2148 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
2149 ide_cd_release(&info->kref);
2153 ide_cd_read_toc(drive, &sense);
2154 g->fops = &idecd_ops;
2155 g->flags |= GENHD_FL_REMOVABLE;
2165 static void __exit ide_cdrom_exit(void)
2167 driver_unregister(&ide_cdrom_driver.gen_driver);
2170 static int __init ide_cdrom_init(void)
2172 return driver_register(&ide_cdrom_driver.gen_driver);
2175 MODULE_ALIAS("ide:*m-cdrom*");
2176 MODULE_ALIAS("ide-cd");
2177 module_init(ide_cdrom_init);
2178 module_exit(ide_cdrom_exit);
2179 MODULE_LICENSE("GPL");