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1/*
2 * ATAPI CD-ROM driver.
3 *
4 * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
5 * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
6 * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
7 * Copyright (C) 2005, 2007-2009 Bartlomiej Zolnierkiewicz
8 *
9 * May be copied or modified under the terms of the GNU General Public
10 * License. See linux/COPYING for more information.
11 *
12 * See Documentation/cdrom/ide-cd.rst for usage information.
13 *
14 * Suggestions are welcome. Patches that work are more welcome though. ;-)
15 *
16 * Documentation:
17 * Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards.
18 *
19 * For historical changelog please see:
20 * Documentation/ide/ChangeLog.ide-cd.1994-2004
21 */
22
23#define DRV_NAME "ide-cd"
24#define PFX DRV_NAME ": "
25
26#define IDECD_VERSION "5.00"
27
28#include <linux/module.h>
29#include <linux/types.h>
30#include <linux/kernel.h>
31#include <linux/sched/task_stack.h>
32#include <linux/delay.h>
33#include <linux/timer.h>
34#include <linux/seq_file.h>
35#include <linux/slab.h>
36#include <linux/interrupt.h>
37#include <linux/errno.h>
38#include <linux/cdrom.h>
39#include <linux/ide.h>
40#include <linux/completion.h>
41#include <linux/mutex.h>
42#include <linux/bcd.h>
43
44/* For SCSI -> ATAPI command conversion */
45#include <scsi/scsi.h>
46
47#include <linux/io.h>
48#include <asm/byteorder.h>
49#include <linux/uaccess.h>
50#include <asm/unaligned.h>
51
52#include "ide-cd.h"
53
54static DEFINE_MUTEX(ide_cd_mutex);
55static DEFINE_MUTEX(idecd_ref_mutex);
56
57static void ide_cd_release(struct device *);
58
59static struct cdrom_info *ide_cd_get(struct gendisk *disk)
60{
61 struct cdrom_info *cd = NULL;
62
63 mutex_lock(&idecd_ref_mutex);
64 cd = ide_drv_g(disk, cdrom_info);
65 if (cd) {
66 if (ide_device_get(cd->drive))
67 cd = NULL;
68 else
69 get_device(&cd->dev);
70
71 }
72 mutex_unlock(&idecd_ref_mutex);
73 return cd;
74}
75
76static void ide_cd_put(struct cdrom_info *cd)
77{
78 ide_drive_t *drive = cd->drive;
79
80 mutex_lock(&idecd_ref_mutex);
81 put_device(&cd->dev);
82 ide_device_put(drive);
83 mutex_unlock(&idecd_ref_mutex);
84}
85
86/*
87 * Generic packet command support and error handling routines.
88 */
89
90/* Mark that we've seen a media change and invalidate our internal buffers. */
91static void cdrom_saw_media_change(ide_drive_t *drive)
92{
93 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
94 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
95}
96
97static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
98{
99 struct request_sense *sense = &drive->sense_data;
100 int log = 0;
101
102 if (!sense || !rq || (rq->rq_flags & RQF_QUIET))
103 return 0;
104
105 ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
106
107 switch (sense->sense_key) {
108 case NO_SENSE:
109 case RECOVERED_ERROR:
110 break;
111 case NOT_READY:
112 /*
113 * don't care about tray state messages for e.g. capacity
114 * commands or in-progress or becoming ready
115 */
116 if (sense->asc == 0x3a || sense->asc == 0x04)
117 break;
118 log = 1;
119 break;
120 case ILLEGAL_REQUEST:
121 /*
122 * don't log START_STOP unit with LoEj set, since we cannot
123 * reliably check if drive can auto-close
124 */
125 if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
126 break;
127 log = 1;
128 break;
129 case UNIT_ATTENTION:
130 /*
131 * Make good and sure we've seen this potential media change.
132 * Some drives (i.e. Creative) fail to present the correct sense
133 * key in the error register.
134 */
135 cdrom_saw_media_change(drive);
136 break;
137 default:
138 log = 1;
139 break;
140 }
141 return log;
142}
143
144static void cdrom_analyze_sense_data(ide_drive_t *drive,
145 struct request *failed_command)
146{
147 struct request_sense *sense = &drive->sense_data;
148 struct cdrom_info *info = drive->driver_data;
149 unsigned long sector;
150 unsigned long bio_sectors;
151
152 ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
153 sense->error_code, sense->sense_key);
154
155 if (failed_command)
156 ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
157 failed_command->cmd[0]);
158
159 if (!cdrom_log_sense(drive, failed_command))
160 return;
161
162 /*
163 * If a read toc is executed for a CD-R or CD-RW medium where the first
164 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
165 * confusing error)
166 */
167 if (failed_command && scsi_req(failed_command)->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
168 if (sense->sense_key == 0x05 && sense->asc == 0x24)
169 return;
170
171 /* current error */
172 if (sense->error_code == 0x70) {
173 switch (sense->sense_key) {
174 case MEDIUM_ERROR:
175 case VOLUME_OVERFLOW:
176 case ILLEGAL_REQUEST:
177 if (!sense->valid)
178 break;
179 if (failed_command == NULL ||
180 blk_rq_is_passthrough(failed_command))
181 break;
182 sector = (sense->information[0] << 24) |
183 (sense->information[1] << 16) |
184 (sense->information[2] << 8) |
185 (sense->information[3]);
186
187 if (queue_logical_block_size(drive->queue) == 2048)
188 /* device sector size is 2K */
189 sector <<= 2;
190
191 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
192 sector &= ~(bio_sectors - 1);
193
194 /*
195 * The SCSI specification allows for the value
196 * returned by READ CAPACITY to be up to 75 2K
197 * sectors past the last readable block.
198 * Therefore, if we hit a medium error within the
199 * last 75 2K sectors, we decrease the saved size
200 * value.
201 */
202 if (sector < get_capacity(info->disk) &&
203 drive->probed_capacity - sector < 4 * 75)
204 set_capacity(info->disk, sector);
205 }
206 }
207
208 ide_cd_log_error(drive->name, failed_command, sense);
209}
210
211static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
212{
213 /*
214 * For ATA_PRIV_SENSE, "ide_req(rq)->special" points to the original
215 * failed request. Also, the sense data should be read
216 * directly from rq which might be different from the original
217 * sense buffer if it got copied during mapping.
218 */
219 struct request *failed = ide_req(rq)->special;
220 void *sense = bio_data(rq->bio);
221
222 if (failed) {
223 /*
224 * Sense is always read into drive->sense_data, copy back to the
225 * original request.
226 */
227 memcpy(scsi_req(failed)->sense, sense, 18);
228 scsi_req(failed)->sense_len = scsi_req(rq)->sense_len;
229 cdrom_analyze_sense_data(drive, failed);
230
231 if (ide_end_rq(drive, failed, BLK_STS_IOERR, blk_rq_bytes(failed)))
232 BUG();
233 } else
234 cdrom_analyze_sense_data(drive, NULL);
235}
236
237
238/*
239 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
240 * while flushing data from cache.
241 *
242 * returns: 0 failed (write timeout expired)
243 * 1 success
244 */
245static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
246{
247
248 struct cdrom_info *info = drive->driver_data;
249
250 if (!scsi_req(rq)->result)
251 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
252
253 scsi_req(rq)->result = 1;
254
255 if (time_after(jiffies, info->write_timeout))
256 return 0;
257 else {
258 /*
259 * take a breather
260 */
261 blk_mq_requeue_request(rq, false);
262 blk_mq_delay_kick_requeue_list(drive->queue, 1);
263 return 1;
264 }
265}
266
267static void ide_cd_free_sense(ide_drive_t *drive)
268{
269 if (!drive->sense_rq)
270 return;
271
272 blk_mq_free_request(drive->sense_rq);
273 drive->sense_rq = NULL;
274 drive->sense_rq_armed = false;
275}
276
277/**
278 * Returns:
279 * 0: if the request should be continued.
280 * 1: if the request will be going through error recovery.
281 * 2: if the request should be ended.
282 */
283static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
284{
285 ide_hwif_t *hwif = drive->hwif;
286 struct request *rq = hwif->rq;
287 int err, sense_key, do_end_request = 0;
288
289 /* get the IDE error register */
290 err = ide_read_error(drive);
291 sense_key = err >> 4;
292
293 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
294 "stat 0x%x",
295 rq->cmd[0], rq->cmd_type, err, stat);
296
297 if (ata_sense_request(rq)) {
298 /*
299 * We got an error trying to get sense info from the drive
300 * (probably while trying to recover from a former error).
301 * Just give up.
302 */
303 rq->rq_flags |= RQF_FAILED;
304 return 2;
305 }
306
307 /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
308 if (blk_rq_is_scsi(rq) && !scsi_req(rq)->result)
309 scsi_req(rq)->result = SAM_STAT_CHECK_CONDITION;
310
311 if (blk_noretry_request(rq))
312 do_end_request = 1;
313
314 switch (sense_key) {
315 case NOT_READY:
316 if (req_op(rq) == REQ_OP_WRITE) {
317 if (ide_cd_breathe(drive, rq))
318 return 1;
319 } else {
320 cdrom_saw_media_change(drive);
321
322 if (!blk_rq_is_passthrough(rq) &&
323 !(rq->rq_flags & RQF_QUIET))
324 printk(KERN_ERR PFX "%s: tray open\n",
325 drive->name);
326 }
327 do_end_request = 1;
328 break;
329 case UNIT_ATTENTION:
330 cdrom_saw_media_change(drive);
331
332 if (blk_rq_is_passthrough(rq))
333 return 0;
334
335 /*
336 * Arrange to retry the request but be sure to give up if we've
337 * retried too many times.
338 */
339 if (++scsi_req(rq)->result > ERROR_MAX)
340 do_end_request = 1;
341 break;
342 case ILLEGAL_REQUEST:
343 /*
344 * Don't print error message for this condition -- SFF8090i
345 * indicates that 5/24/00 is the correct response to a request
346 * to close the tray if the drive doesn't have that capability.
347 *
348 * cdrom_log_sense() knows this!
349 */
350 if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT)
351 break;
352 /* fall-through */
353 case DATA_PROTECT:
354 /*
355 * No point in retrying after an illegal request or data
356 * protect error.
357 */
358 if (!(rq->rq_flags & RQF_QUIET))
359 ide_dump_status(drive, "command error", stat);
360 do_end_request = 1;
361 break;
362 case MEDIUM_ERROR:
363 /*
364 * No point in re-trying a zillion times on a bad sector.
365 * If we got here the error is not correctable.
366 */
367 if (!(rq->rq_flags & RQF_QUIET))
368 ide_dump_status(drive, "media error "
369 "(bad sector)", stat);
370 do_end_request = 1;
371 break;
372 case BLANK_CHECK:
373 /* disk appears blank? */
374 if (!(rq->rq_flags & RQF_QUIET))
375 ide_dump_status(drive, "media error (blank)",
376 stat);
377 do_end_request = 1;
378 break;
379 default:
380 if (blk_rq_is_passthrough(rq))
381 break;
382 if (err & ~ATA_ABORTED) {
383 /* go to the default handler for other errors */
384 ide_error(drive, "cdrom_decode_status", stat);
385 return 1;
386 } else if (++scsi_req(rq)->result > ERROR_MAX)
387 /* we've racked up too many retries, abort */
388 do_end_request = 1;
389 }
390
391 if (blk_rq_is_passthrough(rq)) {
392 rq->rq_flags |= RQF_FAILED;
393 do_end_request = 1;
394 }
395
396 /*
397 * End a request through request sense analysis when we have sense data.
398 * We need this in order to perform end of media processing.
399 */
400 if (do_end_request)
401 goto end_request;
402
403 /* if we got a CHECK_CONDITION status, queue a request sense command */
404 if (stat & ATA_ERR)
405 return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
406 return 1;
407
408end_request:
409 if (stat & ATA_ERR) {
410 hwif->rq = NULL;
411 return ide_queue_sense_rq(drive, rq) ? 2 : 1;
412 } else
413 return 2;
414}
415
416static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
417{
418 struct request *rq = cmd->rq;
419
420 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
421
422 /*
423 * Some of the trailing request sense fields are optional,
424 * and some drives don't send them. Sigh.
425 */
426 if (scsi_req(rq)->cmd[0] == GPCMD_REQUEST_SENSE &&
427 cmd->nleft > 0 && cmd->nleft <= 5)
428 cmd->nleft = 0;
429}
430
431int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
432 int write, void *buffer, unsigned *bufflen,
433 struct scsi_sense_hdr *sshdr, int timeout,
434 req_flags_t rq_flags)
435{
436 struct cdrom_info *info = drive->driver_data;
437 struct scsi_sense_hdr local_sshdr;
438 int retries = 10;
439 bool failed;
440
441 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
442 "rq_flags: 0x%x",
443 cmd[0], write, timeout, rq_flags);
444
445 if (!sshdr)
446 sshdr = &local_sshdr;
447
448 /* start of retry loop */
449 do {
450 struct request *rq;
451 int error;
452 bool delay = false;
453
454 rq = blk_get_request(drive->queue,
455 write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
456 memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
457 ide_req(rq)->type = ATA_PRIV_PC;
458 rq->rq_flags |= rq_flags;
459 rq->timeout = timeout;
460 if (buffer) {
461 error = blk_rq_map_kern(drive->queue, rq, buffer,
462 *bufflen, GFP_NOIO);
463 if (error) {
464 blk_put_request(rq);
465 return error;
466 }
467 }
468
469 blk_execute_rq(drive->queue, info->disk, rq, 0);
470 error = scsi_req(rq)->result ? -EIO : 0;
471
472 if (buffer)
473 *bufflen = scsi_req(rq)->resid_len;
474 scsi_normalize_sense(scsi_req(rq)->sense,
475 scsi_req(rq)->sense_len, sshdr);
476
477 /*
478 * FIXME: we should probably abort/retry or something in case of
479 * failure.
480 */
481 failed = (rq->rq_flags & RQF_FAILED) != 0;
482 if (failed) {
483 /*
484 * The request failed. Retry if it was due to a unit
485 * attention status (usually means media was changed).
486 */
487 if (sshdr->sense_key == UNIT_ATTENTION)
488 cdrom_saw_media_change(drive);
489 else if (sshdr->sense_key == NOT_READY &&
490 sshdr->asc == 4 && sshdr->ascq != 4) {
491 /*
492 * The drive is in the process of loading
493 * a disk. Retry, but wait a little to give
494 * the drive time to complete the load.
495 */
496 delay = true;
497 } else {
498 /* otherwise, don't retry */
499 retries = 0;
500 }
501 --retries;
502 }
503 blk_put_request(rq);
504 if (delay)
505 ssleep(2);
506 } while (failed && retries >= 0);
507
508 /* return an error if the command failed */
509 return failed ? -EIO : 0;
510}
511
512/*
513 * returns true if rq has been completed
514 */
515static bool ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
516{
517 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
518
519 if (cmd->tf_flags & IDE_TFLAG_WRITE)
520 nr_bytes -= cmd->last_xfer_len;
521
522 if (nr_bytes > 0) {
523 ide_complete_rq(drive, BLK_STS_OK, nr_bytes);
524 return true;
525 }
526
527 return false;
528}
529
530/* standard prep_rq that builds 10 byte cmds */
531static bool ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
532{
533 int hard_sect = queue_logical_block_size(q);
534 long block = (long)blk_rq_pos(rq) / (hard_sect >> 9);
535 unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9);
536 struct scsi_request *req = scsi_req(rq);
537
538 if (rq_data_dir(rq) == READ)
539 req->cmd[0] = GPCMD_READ_10;
540 else
541 req->cmd[0] = GPCMD_WRITE_10;
542
543 /*
544 * fill in lba
545 */
546 req->cmd[2] = (block >> 24) & 0xff;
547 req->cmd[3] = (block >> 16) & 0xff;
548 req->cmd[4] = (block >> 8) & 0xff;
549 req->cmd[5] = block & 0xff;
550
551 /*
552 * and transfer length
553 */
554 req->cmd[7] = (blocks >> 8) & 0xff;
555 req->cmd[8] = blocks & 0xff;
556 req->cmd_len = 10;
557 return true;
558}
559
560/*
561 * Most of the SCSI commands are supported directly by ATAPI devices.
562 * This transform handles the few exceptions.
563 */
564static bool ide_cdrom_prep_pc(struct request *rq)
565{
566 u8 *c = scsi_req(rq)->cmd;
567
568 /* transform 6-byte read/write commands to the 10-byte version */
569 if (c[0] == READ_6 || c[0] == WRITE_6) {
570 c[8] = c[4];
571 c[5] = c[3];
572 c[4] = c[2];
573 c[3] = c[1] & 0x1f;
574 c[2] = 0;
575 c[1] &= 0xe0;
576 c[0] += (READ_10 - READ_6);
577 scsi_req(rq)->cmd_len = 10;
578 return true;
579 }
580
581 /*
582 * it's silly to pretend we understand 6-byte sense commands, just
583 * reject with ILLEGAL_REQUEST and the caller should take the
584 * appropriate action
585 */
586 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
587 scsi_req(rq)->result = ILLEGAL_REQUEST;
588 return false;
589 }
590
591 return true;
592}
593
594static bool ide_cdrom_prep_rq(ide_drive_t *drive, struct request *rq)
595{
596 if (!blk_rq_is_passthrough(rq)) {
597 scsi_req_init(scsi_req(rq));
598
599 return ide_cdrom_prep_fs(drive->queue, rq);
600 } else if (blk_rq_is_scsi(rq))
601 return ide_cdrom_prep_pc(rq);
602
603 return true;
604}
605
606static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
607{
608 ide_hwif_t *hwif = drive->hwif;
609 struct ide_cmd *cmd = &hwif->cmd;
610 struct request *rq = hwif->rq;
611 ide_expiry_t *expiry = NULL;
612 int dma_error = 0, dma, thislen, uptodate = 0;
613 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
614 int sense = ata_sense_request(rq);
615 unsigned int timeout;
616 u16 len;
617 u8 ireason, stat;
618
619 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
620
621 /* check for errors */
622 dma = drive->dma;
623 if (dma) {
624 drive->dma = 0;
625 drive->waiting_for_dma = 0;
626 dma_error = hwif->dma_ops->dma_end(drive);
627 ide_dma_unmap_sg(drive, cmd);
628 if (dma_error) {
629 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
630 write ? "write" : "read");
631 ide_dma_off(drive);
632 }
633 }
634
635 /* check status */
636 stat = hwif->tp_ops->read_status(hwif);
637
638 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
639 rc = cdrom_decode_status(drive, stat);
640 if (rc) {
641 if (rc == 2)
642 goto out_end;
643 return ide_stopped;
644 }
645 }
646
647 /* using dma, transfer is complete now */
648 if (dma) {
649 if (dma_error)
650 return ide_error(drive, "dma error", stat);
651 uptodate = 1;
652 goto out_end;
653 }
654
655 ide_read_bcount_and_ireason(drive, &len, &ireason);
656
657 thislen = !blk_rq_is_passthrough(rq) ? len : cmd->nleft;
658 if (thislen > len)
659 thislen = len;
660
661 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
662 stat, thislen);
663
664 /* If DRQ is clear, the command has completed. */
665 if ((stat & ATA_DRQ) == 0) {
666 switch (req_op(rq)) {
667 default:
668 /*
669 * If we're not done reading/writing, complain.
670 * Otherwise, complete the command normally.
671 */
672 uptodate = 1;
673 if (cmd->nleft > 0) {
674 printk(KERN_ERR PFX "%s: %s: data underrun "
675 "(%u bytes)\n", drive->name, __func__,
676 cmd->nleft);
677 if (!write)
678 rq->rq_flags |= RQF_FAILED;
679 uptodate = 0;
680 }
681 goto out_end;
682 case REQ_OP_DRV_IN:
683 case REQ_OP_DRV_OUT:
684 ide_cd_request_sense_fixup(drive, cmd);
685
686 uptodate = cmd->nleft ? 0 : 1;
687
688 /*
689 * suck out the remaining bytes from the drive in an
690 * attempt to complete the data xfer. (see BZ#13399)
691 */
692 if (!(stat & ATA_ERR) && !uptodate && thislen) {
693 ide_pio_bytes(drive, cmd, write, thislen);
694 uptodate = cmd->nleft ? 0 : 1;
695 }
696
697 if (!uptodate)
698 rq->rq_flags |= RQF_FAILED;
699 goto out_end;
700 case REQ_OP_SCSI_IN:
701 case REQ_OP_SCSI_OUT:
702 goto out_end;
703 }
704 }
705
706 rc = ide_check_ireason(drive, rq, len, ireason, write);
707 if (rc)
708 goto out_end;
709
710 cmd->last_xfer_len = 0;
711
712 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
713 "ireason: 0x%x",
714 rq->cmd_type, ireason);
715
716 /* transfer data */
717 while (thislen > 0) {
718 int blen = min_t(int, thislen, cmd->nleft);
719
720 if (cmd->nleft == 0)
721 break;
722
723 ide_pio_bytes(drive, cmd, write, blen);
724 cmd->last_xfer_len += blen;
725
726 thislen -= blen;
727 len -= blen;
728
729 if (sense && write == 0)
730 scsi_req(rq)->sense_len += blen;
731 }
732
733 /* pad, if necessary */
734 if (len > 0) {
735 if (blk_rq_is_passthrough(rq) || write == 0)
736 ide_pad_transfer(drive, write, len);
737 else {
738 printk(KERN_ERR PFX "%s: confused, missing data\n",
739 drive->name);
740 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
741 }
742 }
743
744 switch (req_op(rq)) {
745 case REQ_OP_SCSI_IN:
746 case REQ_OP_SCSI_OUT:
747 timeout = rq->timeout;
748 break;
749 case REQ_OP_DRV_IN:
750 case REQ_OP_DRV_OUT:
751 expiry = ide_cd_expiry;
752 /*FALLTHRU*/
753 default:
754 timeout = ATAPI_WAIT_PC;
755 break;
756 }
757
758 hwif->expiry = expiry;
759 ide_set_handler(drive, cdrom_newpc_intr, timeout);
760 return ide_started;
761
762out_end:
763 if (blk_rq_is_scsi(rq) && rc == 0) {
764 scsi_req(rq)->resid_len = 0;
765 blk_mq_end_request(rq, BLK_STS_OK);
766 hwif->rq = NULL;
767 } else {
768 if (sense && uptodate)
769 ide_cd_complete_failed_rq(drive, rq);
770
771 if (!blk_rq_is_passthrough(rq)) {
772 if (cmd->nleft == 0)
773 uptodate = 1;
774 } else {
775 if (uptodate <= 0 && scsi_req(rq)->result == 0)
776 scsi_req(rq)->result = -EIO;
777 }
778
779 if (uptodate == 0 && rq->bio)
780 if (ide_cd_error_cmd(drive, cmd))
781 return ide_stopped;
782
783 /* make sure it's fully ended */
784 if (blk_rq_is_passthrough(rq)) {
785 scsi_req(rq)->resid_len -= cmd->nbytes - cmd->nleft;
786 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
787 scsi_req(rq)->resid_len += cmd->last_xfer_len;
788 }
789
790 ide_complete_rq(drive, uptodate ? BLK_STS_OK : BLK_STS_IOERR, blk_rq_bytes(rq));
791
792 if (sense && rc == 2)
793 ide_error(drive, "request sense failure", stat);
794 }
795
796 ide_cd_free_sense(drive);
797 return ide_stopped;
798}
799
800static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
801{
802 struct cdrom_info *cd = drive->driver_data;
803 struct request_queue *q = drive->queue;
804 int write = rq_data_dir(rq) == WRITE;
805 unsigned short sectors_per_frame =
806 queue_logical_block_size(q) >> SECTOR_SHIFT;
807
808 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
809 "secs_per_frame: %u",
810 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
811
812 if (write) {
813 /* disk has become write protected */
814 if (get_disk_ro(cd->disk))
815 return ide_stopped;
816 } else {
817 /*
818 * We may be retrying this request after an error. Fix up any
819 * weirdness which might be present in the request packet.
820 */
821 ide_cdrom_prep_rq(drive, rq);
822 }
823
824 /* fs requests *must* be hardware frame aligned */
825 if ((blk_rq_sectors(rq) & (sectors_per_frame - 1)) ||
826 (blk_rq_pos(rq) & (sectors_per_frame - 1)))
827 return ide_stopped;
828
829 /* use DMA, if possible */
830 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
831
832 if (write)
833 cd->devinfo.media_written = 1;
834
835 rq->timeout = ATAPI_WAIT_PC;
836
837 return ide_started;
838}
839
840static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
841{
842
843 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
844 rq->cmd[0], rq->cmd_type);
845
846 if (blk_rq_is_scsi(rq))
847 rq->rq_flags |= RQF_QUIET;
848 else
849 rq->rq_flags &= ~RQF_FAILED;
850
851 drive->dma = 0;
852
853 /* sg request */
854 if (rq->bio) {
855 struct request_queue *q = drive->queue;
856 char *buf = bio_data(rq->bio);
857 unsigned int alignment;
858
859 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
860
861 /*
862 * check if dma is safe
863 *
864 * NOTE! The "len" and "addr" checks should possibly have
865 * separate masks.
866 */
867 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
868 if ((unsigned long)buf & alignment
869 || blk_rq_bytes(rq) & q->dma_pad_mask
870 || object_is_on_stack(buf))
871 drive->dma = 0;
872 }
873}
874
875static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
876 sector_t block)
877{
878 struct ide_cmd cmd;
879 int uptodate = 0;
880 unsigned int nsectors;
881
882 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
883 rq->cmd[0], (unsigned long long)block);
884
885 if (drive->debug_mask & IDE_DBG_RQ)
886 blk_dump_rq_flags(rq, "ide_cd_do_request");
887
888 switch (req_op(rq)) {
889 default:
890 if (cdrom_start_rw(drive, rq) == ide_stopped)
891 goto out_end;
892 break;
893 case REQ_OP_SCSI_IN:
894 case REQ_OP_SCSI_OUT:
895 handle_pc:
896 if (!rq->timeout)
897 rq->timeout = ATAPI_WAIT_PC;
898 cdrom_do_block_pc(drive, rq);
899 break;
900 case REQ_OP_DRV_IN:
901 case REQ_OP_DRV_OUT:
902 switch (ide_req(rq)->type) {
903 case ATA_PRIV_MISC:
904 /* right now this can only be a reset... */
905 uptodate = 1;
906 goto out_end;
907 case ATA_PRIV_SENSE:
908 case ATA_PRIV_PC:
909 goto handle_pc;
910 default:
911 BUG();
912 }
913 }
914
915 /* prepare sense request for this command */
916 ide_prep_sense(drive, rq);
917
918 memset(&cmd, 0, sizeof(cmd));
919
920 if (rq_data_dir(rq))
921 cmd.tf_flags |= IDE_TFLAG_WRITE;
922
923 cmd.rq = rq;
924
925 if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
926 ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
927 ide_map_sg(drive, &cmd);
928 }
929
930 return ide_issue_pc(drive, &cmd);
931out_end:
932 nsectors = blk_rq_sectors(rq);
933
934 if (nsectors == 0)
935 nsectors = 1;
936
937 ide_complete_rq(drive, uptodate ? BLK_STS_OK : BLK_STS_IOERR, nsectors << 9);
938
939 return ide_stopped;
940}
941
942/*
943 * Ioctl handling.
944 *
945 * Routines which queue packet commands take as a final argument a pointer to a
946 * request_sense struct. If execution of the command results in an error with a
947 * CHECK CONDITION status, this structure will be filled with the results of the
948 * subsequent request sense command. The pointer can also be NULL, in which case
949 * no sense information is returned.
950 */
951static void msf_from_bcd(struct atapi_msf *msf)
952{
953 msf->minute = bcd2bin(msf->minute);
954 msf->second = bcd2bin(msf->second);
955 msf->frame = bcd2bin(msf->frame);
956}
957
958int cdrom_check_status(ide_drive_t *drive, struct scsi_sense_hdr *sshdr)
959{
960 struct cdrom_info *info = drive->driver_data;
961 struct cdrom_device_info *cdi;
962 unsigned char cmd[BLK_MAX_CDB];
963
964 ide_debug_log(IDE_DBG_FUNC, "enter");
965
966 if (!info)
967 return -EIO;
968
969 cdi = &info->devinfo;
970
971 memset(cmd, 0, BLK_MAX_CDB);
972 cmd[0] = GPCMD_TEST_UNIT_READY;
973
974 /*
975 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
976 * instead of supporting the LOAD_UNLOAD opcode.
977 */
978 cmd[7] = cdi->sanyo_slot % 3;
979
980 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sshdr, 0, RQF_QUIET);
981}
982
983static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
984 unsigned long *sectors_per_frame)
985{
986 struct {
987 __be32 lba;
988 __be32 blocklen;
989 } capbuf;
990
991 int stat;
992 unsigned char cmd[BLK_MAX_CDB];
993 unsigned len = sizeof(capbuf);
994 u32 blocklen;
995
996 ide_debug_log(IDE_DBG_FUNC, "enter");
997
998 memset(cmd, 0, BLK_MAX_CDB);
999 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1000
1001 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, NULL, 0,
1002 RQF_QUIET);
1003 if (stat)
1004 return stat;
1005
1006 /*
1007 * Sanity check the given block size, in so far as making
1008 * sure the sectors_per_frame we give to the caller won't
1009 * end up being bogus.
1010 */
1011 blocklen = be32_to_cpu(capbuf.blocklen);
1012 blocklen = (blocklen >> SECTOR_SHIFT) << SECTOR_SHIFT;
1013 switch (blocklen) {
1014 case 512:
1015 case 1024:
1016 case 2048:
1017 case 4096:
1018 break;
1019 default:
1020 printk_once(KERN_ERR PFX "%s: weird block size %u; "
1021 "setting default block size to 2048\n",
1022 drive->name, blocklen);
1023 blocklen = 2048;
1024 break;
1025 }
1026
1027 *capacity = 1 + be32_to_cpu(capbuf.lba);
1028 *sectors_per_frame = blocklen >> SECTOR_SHIFT;
1029
1030 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
1031 *capacity, *sectors_per_frame);
1032
1033 return 0;
1034}
1035
1036static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1037 int format, char *buf, int buflen)
1038{
1039 unsigned char cmd[BLK_MAX_CDB];
1040
1041 ide_debug_log(IDE_DBG_FUNC, "enter");
1042
1043 memset(cmd, 0, BLK_MAX_CDB);
1044
1045 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1046 cmd[6] = trackno;
1047 cmd[7] = (buflen >> 8);
1048 cmd[8] = (buflen & 0xff);
1049 cmd[9] = (format << 6);
1050
1051 if (msf_flag)
1052 cmd[1] = 2;
1053
1054 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, NULL, 0, RQF_QUIET);
1055}
1056
1057/* Try to read the entire TOC for the disk into our internal buffer. */
1058int ide_cd_read_toc(ide_drive_t *drive)
1059{
1060 int stat, ntracks, i;
1061 struct cdrom_info *info = drive->driver_data;
1062 struct cdrom_device_info *cdi = &info->devinfo;
1063 struct atapi_toc *toc = info->toc;
1064 struct {
1065 struct atapi_toc_header hdr;
1066 struct atapi_toc_entry ent;
1067 } ms_tmp;
1068 long last_written;
1069 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1070
1071 ide_debug_log(IDE_DBG_FUNC, "enter");
1072
1073 if (toc == NULL) {
1074 /* try to allocate space */
1075 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
1076 if (toc == NULL) {
1077 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
1078 drive->name);
1079 return -ENOMEM;
1080 }
1081 info->toc = toc;
1082 }
1083
1084 /*
1085 * Check to see if the existing data is still valid. If it is,
1086 * just return.
1087 */
1088 (void) cdrom_check_status(drive, NULL);
1089
1090 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
1091 return 0;
1092
1093 /* try to get the total cdrom capacity and sector size */
1094 stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame);
1095 if (stat)
1096 toc->capacity = 0x1fffff;
1097
1098 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1099 /* save a private copy of the TOC capacity for error handling */
1100 drive->probed_capacity = toc->capacity * sectors_per_frame;
1101
1102 blk_queue_logical_block_size(drive->queue,
1103 sectors_per_frame << SECTOR_SHIFT);
1104
1105 /* first read just the header, so we know how long the TOC is */
1106 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1107 sizeof(struct atapi_toc_header));
1108 if (stat)
1109 return stat;
1110
1111 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1112 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1113 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1114 }
1115
1116 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1117 if (ntracks <= 0)
1118 return -EIO;
1119 if (ntracks > MAX_TRACKS)
1120 ntracks = MAX_TRACKS;
1121
1122 /* now read the whole schmeer */
1123 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1124 (char *)&toc->hdr,
1125 sizeof(struct atapi_toc_header) +
1126 (ntracks + 1) *
1127 sizeof(struct atapi_toc_entry));
1128
1129 if (stat && toc->hdr.first_track > 1) {
1130 /*
1131 * Cds with CDI tracks only don't have any TOC entries, despite
1132 * of this the returned values are
1133 * first_track == last_track = number of CDI tracks + 1,
1134 * so that this case is indistinguishable from the same layout
1135 * plus an additional audio track. If we get an error for the
1136 * regular case, we assume a CDI without additional audio
1137 * tracks. In this case the readable TOC is empty (CDI tracks
1138 * are not included) and only holds the Leadout entry.
1139 *
1140 * Heiko Eißfeldt.
1141 */
1142 ntracks = 0;
1143 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1144 (char *)&toc->hdr,
1145 sizeof(struct atapi_toc_header) +
1146 (ntracks + 1) *
1147 sizeof(struct atapi_toc_entry));
1148 if (stat)
1149 return stat;
1150
1151 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1152 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1153 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
1154 } else {
1155 toc->hdr.first_track = CDROM_LEADOUT;
1156 toc->hdr.last_track = CDROM_LEADOUT;
1157 }
1158 }
1159
1160 if (stat)
1161 return stat;
1162
1163 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
1164
1165 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
1166 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1167 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
1168 }
1169
1170 for (i = 0; i <= ntracks; i++) {
1171 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1172 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
1173 toc->ent[i].track = bcd2bin(toc->ent[i].track);
1174 msf_from_bcd(&toc->ent[i].addr.msf);
1175 }
1176 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1177 toc->ent[i].addr.msf.second,
1178 toc->ent[i].addr.msf.frame);
1179 }
1180
1181 if (toc->hdr.first_track != CDROM_LEADOUT) {
1182 /* read the multisession information */
1183 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1184 sizeof(ms_tmp));
1185 if (stat)
1186 return stat;
1187
1188 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1189 } else {
1190 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1191 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
1192 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1193 }
1194
1195 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1196 /* re-read multisession information using MSF format */
1197 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1198 sizeof(ms_tmp));
1199 if (stat)
1200 return stat;
1201
1202 msf_from_bcd(&ms_tmp.ent.addr.msf);
1203 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
1204 ms_tmp.ent.addr.msf.second,
1205 ms_tmp.ent.addr.msf.frame);
1206 }
1207
1208 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1209
1210 /* now try to get the total cdrom capacity */
1211 stat = cdrom_get_last_written(cdi, &last_written);
1212 if (!stat && (last_written > toc->capacity)) {
1213 toc->capacity = last_written;
1214 set_capacity(info->disk, toc->capacity * sectors_per_frame);
1215 drive->probed_capacity = toc->capacity * sectors_per_frame;
1216 }
1217
1218 /* Remember that we've read this stuff. */
1219 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
1220
1221 return 0;
1222}
1223
1224int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
1225{
1226 struct cdrom_info *info = drive->driver_data;
1227 struct cdrom_device_info *cdi = &info->devinfo;
1228 struct packet_command cgc;
1229 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
1230
1231 ide_debug_log(IDE_DBG_FUNC, "enter");
1232
1233 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
1234 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
1235
1236 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
1237 do {
1238 /* we seem to get stat=0x01,err=0x00 the first time (??) */
1239 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1240 if (!stat)
1241 break;
1242 } while (--attempts);
1243 return stat;
1244}
1245
1246void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
1247{
1248 struct cdrom_info *cd = drive->driver_data;
1249 u16 curspeed, maxspeed;
1250
1251 ide_debug_log(IDE_DBG_FUNC, "enter");
1252
1253 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
1254 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1255 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
1256 } else {
1257 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1258 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
1259 }
1260
1261 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1262 curspeed, maxspeed);
1263
1264 cd->current_speed = DIV_ROUND_CLOSEST(curspeed, 176);
1265 cd->max_speed = DIV_ROUND_CLOSEST(maxspeed, 176);
1266}
1267
1268#define IDE_CD_CAPABILITIES \
1269 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1270 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1271 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1272 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1273 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
1274
1275static const struct cdrom_device_ops ide_cdrom_dops = {
1276 .open = ide_cdrom_open_real,
1277 .release = ide_cdrom_release_real,
1278 .drive_status = ide_cdrom_drive_status,
1279 .check_events = ide_cdrom_check_events_real,
1280 .tray_move = ide_cdrom_tray_move,
1281 .lock_door = ide_cdrom_lock_door,
1282 .select_speed = ide_cdrom_select_speed,
1283 .get_last_session = ide_cdrom_get_last_session,
1284 .get_mcn = ide_cdrom_get_mcn,
1285 .reset = ide_cdrom_reset,
1286 .audio_ioctl = ide_cdrom_audio_ioctl,
1287 .capability = IDE_CD_CAPABILITIES,
1288 .generic_packet = ide_cdrom_packet,
1289};
1290
1291static int ide_cdrom_register(ide_drive_t *drive, int nslots)
1292{
1293 struct cdrom_info *info = drive->driver_data;
1294 struct cdrom_device_info *devinfo = &info->devinfo;
1295
1296 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
1297
1298 devinfo->ops = &ide_cdrom_dops;
1299 devinfo->speed = info->current_speed;
1300 devinfo->capacity = nslots;
1301 devinfo->handle = drive;
1302 strcpy(devinfo->name, drive->name);
1303
1304 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
1305 devinfo->mask |= CDC_SELECT_SPEED;
1306
1307 devinfo->disk = info->disk;
1308 return register_cdrom(devinfo);
1309}
1310
1311static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
1312{
1313 struct cdrom_info *cd = drive->driver_data;
1314 struct cdrom_device_info *cdi = &cd->devinfo;
1315 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1316 mechtype_t mechtype;
1317 int nslots = 1;
1318
1319 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1320 drive->media, drive->atapi_flags);
1321
1322 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1323 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1324 CDC_MO_DRIVE | CDC_RAM);
1325
1326 if (drive->media == ide_optical) {
1327 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
1328 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
1329 drive->name);
1330 return nslots;
1331 }
1332
1333 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1334 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1335 cdi->mask &= ~CDC_PLAY_AUDIO;
1336 return nslots;
1337 }
1338
1339 /*
1340 * We have to cheat a little here. the packet will eventually be queued
1341 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1342 * Since this device hasn't been registered with the Uniform layer yet,
1343 * it can't do this. Same goes for cdi->ops.
1344 */
1345 cdi->handle = drive;
1346 cdi->ops = &ide_cdrom_dops;
1347
1348 if (ide_cdrom_get_capabilities(drive, buf))
1349 return 0;
1350
1351 if ((buf[8 + 6] & 0x01) == 0)
1352 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
1353 if (buf[8 + 6] & 0x08)
1354 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
1355 if (buf[8 + 3] & 0x01)
1356 cdi->mask &= ~CDC_CD_R;
1357 if (buf[8 + 3] & 0x02)
1358 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
1359 if (buf[8 + 2] & 0x38)
1360 cdi->mask &= ~CDC_DVD;
1361 if (buf[8 + 3] & 0x20)
1362 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
1363 if (buf[8 + 3] & 0x10)
1364 cdi->mask &= ~CDC_DVD_R;
1365 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
1366 cdi->mask &= ~CDC_PLAY_AUDIO;
1367
1368 mechtype = buf[8 + 6] >> 5;
1369 if (mechtype == mechtype_caddy ||
1370 mechtype == mechtype_popup ||
1371 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
1372 cdi->mask |= CDC_CLOSE_TRAY;
1373
1374 if (cdi->sanyo_slot > 0) {
1375 cdi->mask &= ~CDC_SELECT_DISC;
1376 nslots = 3;
1377 } else if (mechtype == mechtype_individual_changer ||
1378 mechtype == mechtype_cartridge_changer) {
1379 nslots = cdrom_number_of_slots(cdi);
1380 if (nslots > 1)
1381 cdi->mask &= ~CDC_SELECT_DISC;
1382 }
1383
1384 ide_cdrom_update_speed(drive, buf);
1385
1386 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
1387
1388 /* don't print speed if the drive reported 0 */
1389 if (cd->max_speed)
1390 printk(KERN_CONT " %dX", cd->max_speed);
1391
1392 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
1393
1394 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1395 printk(KERN_CONT " DVD%s%s",
1396 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1397 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
1398
1399 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1400 printk(KERN_CONT " CD%s%s",
1401 (cdi->mask & CDC_CD_R) ? "" : "-R",
1402 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
1403
1404 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1405 printk(KERN_CONT " changer w/%d slots", nslots);
1406 else
1407 printk(KERN_CONT " drive");
1408
1409 printk(KERN_CONT ", %dkB Cache\n",
1410 be16_to_cpup((__be16 *)&buf[8 + 12]));
1411
1412 return nslots;
1413}
1414
1415struct cd_list_entry {
1416 const char *id_model;
1417 const char *id_firmware;
1418 unsigned int cd_flags;
1419};
1420
1421#ifdef CONFIG_IDE_PROC_FS
1422static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1423{
1424 unsigned long capacity, sectors_per_frame;
1425
1426 if (cdrom_read_capacity(drive, &capacity, §ors_per_frame))
1427 return 0;
1428
1429 return capacity * sectors_per_frame;
1430}
1431
1432static int idecd_capacity_proc_show(struct seq_file *m, void *v)
1433{
1434 ide_drive_t *drive = m->private;
1435
1436 seq_printf(m, "%llu\n", (long long)ide_cdrom_capacity(drive));
1437 return 0;
1438}
1439
1440static ide_proc_entry_t idecd_proc[] = {
1441 { "capacity", S_IFREG|S_IRUGO, idecd_capacity_proc_show },
1442 {}
1443};
1444
1445static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1446{
1447 return idecd_proc;
1448}
1449
1450static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1451{
1452 return NULL;
1453}
1454#endif
1455
1456static const struct cd_list_entry ide_cd_quirks_list[] = {
1457 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1458 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
1459 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1460 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1461 IDE_AFLAG_PRE_ATAPI12, },
1462 /* Vertos 300, some versions of this drive like to talk BCD. */
1463 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
1464 /* Vertos 600 ESD. */
1465 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
1466 /*
1467 * Sanyo 3 CD changer uses a non-standard command for CD changing
1468 * (by default standard ATAPI support for CD changers is used).
1469 */
1470 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1471 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1472 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
1473 /* Stingray 8X CD-ROM. */
1474 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
1475 /*
1476 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1477 * mode sense page capabilities size, but older drives break.
1478 */
1479 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1480 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1481 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1482 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
1483 /*
1484 * Some drives used by Apple don't advertise audio play
1485 * but they do support reading TOC & audio datas.
1486 */
1487 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1488 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1489 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1490 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1491 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1492 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1493 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1494 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
1495 { NULL, NULL, 0 }
1496};
1497
1498static unsigned int ide_cd_flags(u16 *id)
1499{
1500 const struct cd_list_entry *cle = ide_cd_quirks_list;
1501
1502 while (cle->id_model) {
1503 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
1504 (cle->id_firmware == NULL ||
1505 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
1506 return cle->cd_flags;
1507 cle++;
1508 }
1509
1510 return 0;
1511}
1512
1513static int ide_cdrom_setup(ide_drive_t *drive)
1514{
1515 struct cdrom_info *cd = drive->driver_data;
1516 struct cdrom_device_info *cdi = &cd->devinfo;
1517 struct request_queue *q = drive->queue;
1518 u16 *id = drive->id;
1519 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
1520 int nslots;
1521
1522 ide_debug_log(IDE_DBG_PROBE, "enter");
1523
1524 drive->prep_rq = ide_cdrom_prep_rq;
1525 blk_queue_dma_alignment(q, 31);
1526 blk_queue_update_dma_pad(q, 15);
1527
1528 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1529 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
1530
1531 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
1532 fw_rev[4] == '1' && fw_rev[6] <= '2')
1533 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1534 IDE_AFLAG_TOCADDR_AS_BCD);
1535 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
1536 fw_rev[4] == '1' && fw_rev[6] <= '2')
1537 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1538 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
1539 /* 3 => use CD in slot 0 */
1540 cdi->sanyo_slot = 3;
1541
1542 nslots = ide_cdrom_probe_capabilities(drive);
1543
1544 blk_queue_logical_block_size(q, CD_FRAMESIZE);
1545
1546 if (ide_cdrom_register(drive, nslots)) {
1547 printk(KERN_ERR PFX "%s: %s failed to register device with the"
1548 " cdrom driver.\n", drive->name, __func__);
1549 cd->devinfo.handle = NULL;
1550 return 1;
1551 }
1552
1553 ide_proc_register_driver(drive, cd->driver);
1554 return 0;
1555}
1556
1557static void ide_cd_remove(ide_drive_t *drive)
1558{
1559 struct cdrom_info *info = drive->driver_data;
1560
1561 ide_debug_log(IDE_DBG_FUNC, "enter");
1562
1563 ide_proc_unregister_driver(drive, info->driver);
1564 device_del(&info->dev);
1565 del_gendisk(info->disk);
1566
1567 mutex_lock(&idecd_ref_mutex);
1568 put_device(&info->dev);
1569 mutex_unlock(&idecd_ref_mutex);
1570}
1571
1572static void ide_cd_release(struct device *dev)
1573{
1574 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
1575 struct cdrom_device_info *devinfo = &info->devinfo;
1576 ide_drive_t *drive = info->drive;
1577 struct gendisk *g = info->disk;
1578
1579 ide_debug_log(IDE_DBG_FUNC, "enter");
1580
1581 kfree(info->toc);
1582 if (devinfo->handle == drive)
1583 unregister_cdrom(devinfo);
1584 drive->driver_data = NULL;
1585 drive->prep_rq = NULL;
1586 g->private_data = NULL;
1587 put_disk(g);
1588 kfree(info);
1589}
1590
1591static int ide_cd_probe(ide_drive_t *);
1592
1593static struct ide_driver ide_cdrom_driver = {
1594 .gen_driver = {
1595 .owner = THIS_MODULE,
1596 .name = "ide-cdrom",
1597 .bus = &ide_bus_type,
1598 },
1599 .probe = ide_cd_probe,
1600 .remove = ide_cd_remove,
1601 .version = IDECD_VERSION,
1602 .do_request = ide_cd_do_request,
1603#ifdef CONFIG_IDE_PROC_FS
1604 .proc_entries = ide_cd_proc_entries,
1605 .proc_devsets = ide_cd_proc_devsets,
1606#endif
1607};
1608
1609static int idecd_open(struct block_device *bdev, fmode_t mode)
1610{
1611 struct cdrom_info *info;
1612 int rc = -ENXIO;
1613
1614 check_disk_change(bdev);
1615
1616 mutex_lock(&ide_cd_mutex);
1617 info = ide_cd_get(bdev->bd_disk);
1618 if (!info)
1619 goto out;
1620
1621 rc = cdrom_open(&info->devinfo, bdev, mode);
1622 if (rc < 0)
1623 ide_cd_put(info);
1624out:
1625 mutex_unlock(&ide_cd_mutex);
1626 return rc;
1627}
1628
1629static void idecd_release(struct gendisk *disk, fmode_t mode)
1630{
1631 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1632
1633 mutex_lock(&ide_cd_mutex);
1634 cdrom_release(&info->devinfo, mode);
1635
1636 ide_cd_put(info);
1637 mutex_unlock(&ide_cd_mutex);
1638}
1639
1640static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1641{
1642 struct packet_command cgc;
1643 char buffer[16];
1644 int stat;
1645 char spindown;
1646
1647 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1648 return -EFAULT;
1649
1650 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1651
1652 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1653 if (stat)
1654 return stat;
1655
1656 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1657 return cdrom_mode_select(cdi, &cgc);
1658}
1659
1660static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1661{
1662 struct packet_command cgc;
1663 char buffer[16];
1664 int stat;
1665 char spindown;
1666
1667 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1668
1669 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1670 if (stat)
1671 return stat;
1672
1673 spindown = buffer[11] & 0x0f;
1674 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
1675 return -EFAULT;
1676 return 0;
1677}
1678
1679static int idecd_locked_ioctl(struct block_device *bdev, fmode_t mode,
1680 unsigned int cmd, unsigned long arg)
1681{
1682 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
1683 int err;
1684
1685 switch (cmd) {
1686 case CDROMSETSPINDOWN:
1687 return idecd_set_spindown(&info->devinfo, arg);
1688 case CDROMGETSPINDOWN:
1689 return idecd_get_spindown(&info->devinfo, arg);
1690 default:
1691 break;
1692 }
1693
1694 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
1695 if (err == -EINVAL)
1696 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
1697
1698 return err;
1699}
1700
1701static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
1702 unsigned int cmd, unsigned long arg)
1703{
1704 int ret;
1705
1706 mutex_lock(&ide_cd_mutex);
1707 ret = idecd_locked_ioctl(bdev, mode, cmd, arg);
1708 mutex_unlock(&ide_cd_mutex);
1709
1710 return ret;
1711}
1712
1713
1714static unsigned int idecd_check_events(struct gendisk *disk,
1715 unsigned int clearing)
1716{
1717 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1718 return cdrom_check_events(&info->devinfo, clearing);
1719}
1720
1721static int idecd_revalidate_disk(struct gendisk *disk)
1722{
1723 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
1724
1725 ide_cd_read_toc(info->drive);
1726
1727 return 0;
1728}
1729
1730static const struct block_device_operations idecd_ops = {
1731 .owner = THIS_MODULE,
1732 .open = idecd_open,
1733 .release = idecd_release,
1734 .ioctl = idecd_ioctl,
1735 .check_events = idecd_check_events,
1736 .revalidate_disk = idecd_revalidate_disk
1737};
1738
1739/* module options */
1740static unsigned long debug_mask;
1741module_param(debug_mask, ulong, 0644);
1742
1743MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1744
1745static int ide_cd_probe(ide_drive_t *drive)
1746{
1747 struct cdrom_info *info;
1748 struct gendisk *g;
1749
1750 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1751 drive->driver_req, drive->media);
1752
1753 if (!strstr("ide-cdrom", drive->driver_req))
1754 goto failed;
1755
1756 if (drive->media != ide_cdrom && drive->media != ide_optical)
1757 goto failed;
1758
1759 drive->debug_mask = debug_mask;
1760 drive->irq_handler = cdrom_newpc_intr;
1761
1762 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
1763 if (info == NULL) {
1764 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
1765 drive->name);
1766 goto failed;
1767 }
1768
1769 g = alloc_disk(1 << PARTN_BITS);
1770 if (!g)
1771 goto out_free_cd;
1772
1773 ide_init_disk(g, drive);
1774
1775 info->dev.parent = &drive->gendev;
1776 info->dev.release = ide_cd_release;
1777 dev_set_name(&info->dev, "%s", dev_name(&drive->gendev));
1778
1779 if (device_register(&info->dev))
1780 goto out_free_disk;
1781
1782 info->drive = drive;
1783 info->driver = &ide_cdrom_driver;
1784 info->disk = g;
1785
1786 g->private_data = &info->driver;
1787
1788 drive->driver_data = info;
1789
1790 g->minors = 1;
1791 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1792 if (ide_cdrom_setup(drive)) {
1793 put_device(&info->dev);
1794 goto failed;
1795 }
1796
1797 ide_cd_read_toc(drive);
1798 g->fops = &idecd_ops;
1799 g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
1800 g->events = DISK_EVENT_MEDIA_CHANGE;
1801 device_add_disk(&drive->gendev, g, NULL);
1802 return 0;
1803
1804out_free_disk:
1805 put_disk(g);
1806out_free_cd:
1807 kfree(info);
1808failed:
1809 return -ENODEV;
1810}
1811
1812static void __exit ide_cdrom_exit(void)
1813{
1814 driver_unregister(&ide_cdrom_driver.gen_driver);
1815}
1816
1817static int __init ide_cdrom_init(void)
1818{
1819 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
1820 return driver_register(&ide_cdrom_driver.gen_driver);
1821}
1822
1823MODULE_ALIAS("ide:*m-cdrom*");
1824MODULE_ALIAS("ide-cd");
1825module_init(ide_cdrom_init);
1826module_exit(ide_cdrom_exit);
1827MODULE_LICENSE("GPL");