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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Bartlomiej Zolnierkiewicz3bb46632008-02-01 23:09:28 +01002 * ATAPI CD-ROM driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01004 * 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>
Bartlomiej Zolnierkiewicz14fa91c2009-03-31 20:15:16 +02007 * Copyright (C) 2005, 2007-2009 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 *
9 * May be copied or modified under the terms of the GNU General Public
10 * License. See linux/COPYING for more information.
11 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 * See Documentation/cdrom/ide-cd for usage information.
13 *
14 * Suggestions are welcome. Patches that work are more welcome though. ;-)
Bartlomiej Zolnierkiewicz116e6902009-03-31 20:14:59 +020015 *
16 * Documentation:
17 * Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards.
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 *
Bartlomiej Zolnierkiewicz03553352008-02-01 23:09:18 +010019 * For historical changelog please see:
20 * Documentation/ide/ChangeLog.ide-cd.1994-2004
21 */
22
Borislav Petkovfc8323f2008-10-13 21:39:48 +020023#define DRV_NAME "ide-cd"
24#define PFX DRV_NAME ": "
25
Bartlomiej Zolnierkiewicz3bb46632008-02-01 23:09:28 +010026#define IDECD_VERSION "5.00"
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#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>
Arjan van de Vencf8b8972006-03-23 03:00:45 -080039#include <linux/mutex.h>
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +010040#include <linux/bcd.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +020042/* For SCSI -> ATAPI command conversion */
43#include <scsi/scsi.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Borislav Petkov9aba4682008-04-26 22:25:15 +020045#include <linux/irq.h>
46#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <asm/byteorder.h>
Borislav Petkov9aba4682008-04-26 22:25:15 +020048#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <asm/unaligned.h>
50
51#include "ide-cd.h"
52
Arjan van de Vencf8b8972006-03-23 03:00:45 -080053static DEFINE_MUTEX(idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +010055static void ide_cd_release(struct device *);
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +020056
Linus Torvalds1da177e2005-04-16 15:20:36 -070057static struct cdrom_info *ide_cd_get(struct gendisk *disk)
58{
59 struct cdrom_info *cd = NULL;
60
Arjan van de Vencf8b8972006-03-23 03:00:45 -080061 mutex_lock(&idecd_ref_mutex);
Borislav Petkov5aeddf92008-10-13 21:39:34 +020062 cd = ide_drv_g(disk, cdrom_info);
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +020063 if (cd) {
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +020064 if (ide_device_get(cd->drive))
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +020065 cd = NULL;
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +020066 else
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +010067 get_device(&cd->dev);
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +020068
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +020069 }
Arjan van de Vencf8b8972006-03-23 03:00:45 -080070 mutex_unlock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 return cd;
72}
73
Linus Torvalds1da177e2005-04-16 15:20:36 -070074static void ide_cd_put(struct cdrom_info *cd)
75{
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +020076 ide_drive_t *drive = cd->drive;
77
Arjan van de Vencf8b8972006-03-23 03:00:45 -080078 mutex_lock(&idecd_ref_mutex);
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +010079 put_device(&cd->dev);
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +020080 ide_device_put(drive);
Arjan van de Vencf8b8972006-03-23 03:00:45 -080081 mutex_unlock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070082}
83
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +020084/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 * Generic packet command support and error handling routines.
86 */
87
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +020088/* Mark that we've seen a media change and invalidate our internal buffers. */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +020089static void cdrom_saw_media_change(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -070090{
Bartlomiej Zolnierkiewiczfe11edf2008-10-17 18:09:11 +020091 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
Borislav Petkov570f89e2008-07-23 19:56:02 +020092 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093}
94
95static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
96 struct request_sense *sense)
97{
98 int log = 0;
99
Borislav Petkov088b1b82009-01-02 13:34:47 +0100100 ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200101
Jens Axboe4aff5e22006-08-10 08:44:47 +0200102 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 return 0;
104
105 switch (sense->sense_key) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200106 case NO_SENSE:
107 case RECOVERED_ERROR:
108 break;
109 case NOT_READY:
110 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200111 * don't care about tray state messages for e.g. capacity
112 * commands or in-progress or becoming ready
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200113 */
114 if (sense->asc == 0x3a || sense->asc == 0x04)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200116 log = 1;
117 break;
118 case ILLEGAL_REQUEST:
119 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200120 * don't log START_STOP unit with LoEj set, since we cannot
121 * reliably check if drive can auto-close
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200122 */
123 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200125 log = 1;
126 break;
127 case UNIT_ATTENTION:
128 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200129 * Make good and sure we've seen this potential media change.
130 * Some drives (i.e. Creative) fail to present the correct sense
131 * key in the error register.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200132 */
133 cdrom_saw_media_change(drive);
134 break;
135 default:
136 log = 1;
137 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 }
139 return log;
140}
141
Borislav Petkove5e076a2008-04-26 22:25:15 +0200142static void cdrom_analyze_sense_data(ide_drive_t *drive,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 struct request *failed_command,
144 struct request_sense *sense)
145{
Alan Coxdbe217a2006-06-25 05:47:44 -0700146 unsigned long sector;
147 unsigned long bio_sectors;
Alan Coxdbe217a2006-06-25 05:47:44 -0700148 struct cdrom_info *info = drive->driver_data;
149
Borislav Petkov088b1b82009-01-02 13:34:47 +0100150 ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
151 sense->error_code, sense->sense_key);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200152
153 if (failed_command)
Borislav Petkov088b1b82009-01-02 13:34:47 +0100154 ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
155 failed_command->cmd[0]);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 if (!cdrom_log_sense(drive, failed_command, sense))
158 return;
159
160 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200161 * If a read toc is executed for a CD-R or CD-RW medium where the first
162 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
163 * confusing error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 */
165 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
166 if (sense->sense_key == 0x05 && sense->asc == 0x24)
167 return;
168
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200169 /* current error */
170 if (sense->error_code == 0x70) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200171 switch (sense->sense_key) {
Alan Coxdbe217a2006-06-25 05:47:44 -0700172 case MEDIUM_ERROR:
173 case VOLUME_OVERFLOW:
174 case ILLEGAL_REQUEST:
175 if (!sense->valid)
176 break;
177 if (failed_command == NULL ||
178 !blk_fs_request(failed_command))
179 break;
180 sector = (sense->information[0] << 24) |
181 (sense->information[1] << 16) |
182 (sense->information[2] << 8) |
183 (sense->information[3]);
184
Alan Coxdbe217a2006-06-25 05:47:44 -0700185 if (drive->queue->hardsect_size == 2048)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200186 /* device sector size is 2K */
187 sector <<= 2;
Roel Kluineee49292008-04-28 23:44:43 +0200188
189 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200190 sector &= ~(bio_sectors - 1);
Alan Coxdbe217a2006-06-25 05:47:44 -0700191
Bartlomiej Zolnierkiewiczd3dd7102009-02-25 20:28:23 +0100192 /*
193 * The SCSI specification allows for the value
194 * returned by READ CAPACITY to be up to 75 2K
195 * sectors past the last readable block.
196 * Therefore, if we hit a medium error within the
197 * last 75 2K sectors, we decrease the saved size
198 * value.
199 */
Alan Coxdbe217a2006-06-25 05:47:44 -0700200 if (sector < get_capacity(info->disk) &&
Borislav Petkove5e076a2008-04-26 22:25:15 +0200201 drive->probed_capacity - sector < 4 * 75)
Alan Coxdbe217a2006-06-25 05:47:44 -0700202 set_capacity(info->disk, sector);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200203 }
204 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +0100206 ide_cd_log_error(drive->name, failed_command, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207}
208
Bartlomiej Zolnierkiewicz299c4852009-03-31 20:15:01 +0200209static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
210{
211 /*
Tejun Heo1f181d22009-04-19 07:00:42 +0900212 * For REQ_TYPE_SENSE, "rq->special" points to the original
Bartlomiej Zolnierkiewicz299c4852009-03-31 20:15:01 +0200213 * failed request
214 */
Tejun Heo1f181d22009-04-19 07:00:42 +0900215 struct request *failed = (struct request *)rq->special;
Borislav Petkovc457ce82009-04-19 07:00:42 +0900216 struct request_sense *sense = &drive->sense_data;
Bartlomiej Zolnierkiewicz299c4852009-03-31 20:15:01 +0200217
218 if (failed) {
219 if (failed->sense) {
Borislav Petkovc457ce82009-04-19 07:00:42 +0900220 /*
221 * Sense is always read into drive->sense_data.
222 * Copy back if the failed request has its
223 * sense pointer set.
224 */
225 memcpy(failed->sense, sense, 18);
Bartlomiej Zolnierkiewicz299c4852009-03-31 20:15:01 +0200226 sense = failed->sense;
227 failed->sense_len = rq->sense_len;
228 }
229 cdrom_analyze_sense_data(drive, failed, sense);
230
231 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
232 BUG();
233 } else
234 cdrom_analyze_sense_data(drive, NULL, sense);
235}
236
Borislav Petkov805ec582009-04-08 14:12:52 +0200237
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200238/*
Borislav Petkov805ec582009-04-08 14:12:52 +0200239 * 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 (!rq->errors)
251 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
252
253 rq->errors = 1;
254
255 if (time_after(jiffies, info->write_timeout))
256 return 0;
257 else {
258 struct request_queue *q = drive->queue;
259 unsigned long flags;
260
261 /*
262 * take a breather relying on the unplug timer to kick us again
263 */
264
265 spin_lock_irqsave(q->queue_lock, flags);
266 blk_plug_device(q);
267 spin_unlock_irqrestore(q->queue_lock, flags);
268
269 return 1;
270 }
271}
272
273/**
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200274 * Returns:
275 * 0: if the request should be continued.
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200276 * 1: if the request will be going through error recovery.
277 * 2: if the request should be ended.
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200278 */
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200279static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200281 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100282 struct request *rq = hwif->rq;
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200283 int err, sense_key, do_end_request = 0;
Borislav Petkovdfa44112009-04-08 14:12:53 +0200284 u8 quiet = rq->cmd_flags & REQ_QUIET;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200286 /* get the IDE error register */
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +0100287 err = ide_read_error(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 sense_key = err >> 4;
289
Borislav Petkov98036ab2009-04-08 14:12:53 +0200290 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
291 "stat 0x%x",
292 rq->cmd[0], rq->cmd_type, err, stat);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200293
Jens Axboe4aff5e22006-08-10 08:44:47 +0200294 if (blk_sense_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200295 /*
296 * We got an error trying to get sense info from the drive
297 * (probably while trying to recover from a former error).
298 * Just give up.
299 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200300 rq->cmd_flags |= REQ_FAILED;
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200301 return 2;
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200302 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200304 /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
305 if (blk_pc_request(rq) && !rq->errors)
306 rq->errors = SAM_STAT_CHECK_CONDITION;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200308 if (blk_noretry_request(rq))
309 do_end_request = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200311 switch (sense_key) {
312 case NOT_READY:
Borislav Petkov3c8a48e2009-04-08 14:13:03 +0200313 if (blk_fs_request(rq) && rq_data_dir(rq) == WRITE) {
314 if (ide_cd_breathe(drive, rq))
315 return 1;
316 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +0200317 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200319 if (blk_fs_request(rq) && !quiet)
320 printk(KERN_ERR PFX "%s: tray open\n",
321 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 }
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200323 do_end_request = 1;
324 break;
325 case UNIT_ATTENTION:
326 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200328 if (blk_fs_request(rq) == 0)
329 return 0;
330
331 /*
332 * Arrange to retry the request but be sure to give up if we've
333 * retried too many times.
334 */
335 if (++rq->errors > ERROR_MAX)
Bartlomiej Zolnierkiewicz1920c482009-04-08 14:12:54 +0200336 do_end_request = 1;
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200337 break;
338 case ILLEGAL_REQUEST:
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200339 /*
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200340 * Don't print error message for this condition -- SFF8090i
341 * indicates that 5/24/00 is the correct response to a request
342 * to close the tray if the drive doesn't have that capability.
343 *
344 * cdrom_log_sense() knows this!
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200345 */
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200346 if (rq->cmd[0] == GPCMD_START_STOP_UNIT)
347 break;
348 /* fall-through */
349 case DATA_PROTECT:
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100350 /*
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200351 * No point in retrying after an illegal request or data
352 * protect error.
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100353 */
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200354 if (!quiet)
355 ide_dump_status(drive, "command error", stat);
356 do_end_request = 1;
357 break;
358 case MEDIUM_ERROR:
359 /*
360 * No point in re-trying a zillion times on a bad sector.
361 * If we got here the error is not correctable.
362 */
363 if (!quiet)
364 ide_dump_status(drive, "media error "
365 "(bad sector)", stat);
366 do_end_request = 1;
367 break;
368 case BLANK_CHECK:
369 /* disk appears blank? */
370 if (!quiet)
371 ide_dump_status(drive, "media error (blank)",
372 stat);
373 do_end_request = 1;
374 break;
375 default:
376 if (blk_fs_request(rq) == 0)
377 break;
378 if (err & ~ATA_ABORTED) {
379 /* go to the default handler for other errors */
380 ide_error(drive, "cdrom_decode_status", stat);
381 return 1;
382 } else if (++rq->errors > ERROR_MAX)
383 /* we've racked up too many retries, abort */
384 do_end_request = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 }
386
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200387 if (blk_fs_request(rq) == 0) {
388 rq->cmd_flags |= REQ_FAILED;
389 do_end_request = 1;
390 }
391
392 /*
393 * End a request through request sense analysis when we have sense data.
394 * We need this in order to perform end of media processing.
395 */
396 if (do_end_request)
397 goto end_request;
398
399 /* if we got a CHECK_CONDITION status, queue a request sense command */
400 if (stat & ATA_ERR)
Borislav Petkovc457ce82009-04-19 07:00:42 +0900401 ide_queue_sense_rq(drive, NULL);
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200402 return 1;
403
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100404end_request:
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200405 if (stat & ATA_ERR) {
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100406 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100407 unsigned long flags;
408
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100409 spin_lock_irqsave(q->queue_lock, flags);
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100410 blkdev_dequeue_request(rq);
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100411 spin_unlock_irqrestore(q->queue_lock, flags);
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100412
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100413 hwif->rq = NULL;
Bartlomiej Zolnierkiewicz1d0bf582008-12-29 20:27:30 +0100414
Borislav Petkovc457ce82009-04-19 07:00:42 +0900415 ide_queue_sense_rq(drive, rq);
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200416 return 1;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100417 } else
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200418 return 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419}
420
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200421/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 * Check the contents of the interrupt reason register from the cdrom
423 * and attempt to recover if there are problems. Returns 0 if everything's
424 * ok; nonzero if the request has been terminated.
425 */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100426static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
427 int len, int ireason, int rw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200429 ide_hwif_t *hwif = drive->hwif;
430
Borislav Petkov088b1b82009-01-02 13:34:47 +0100431 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200432
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100433 /*
434 * ireason == 0: the drive wants to receive data from us
435 * ireason == 2: the drive is expecting to transfer data to us
436 */
437 if (ireason == (!rw << 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 return 0;
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100439 else if (ireason == (rw << 1)) {
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100440
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200441 /* whoops... */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200442 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200443 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444
Borislav Petkovae8789f2008-07-16 20:33:45 +0200445 ide_pad_transfer(drive, rw, len);
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100446 } else if (rw == 0 && ireason == 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200447 /*
448 * Some drives (ASUS) seem to tell us that status info is
449 * available. Just get it and ignore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200451 (void)hwif->tp_ops->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 return 0;
453 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200454 /* drive wants a command packet, or invalid ireason... */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200455 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200456 drive->name, __func__, ireason);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 }
458
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100459 if (rq->cmd_type == REQ_TYPE_ATA_PC)
460 rq->cmd_flags |= REQ_FAILED;
461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 return -1;
463}
464
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200465static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100466{
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200467 struct request *rq = cmd->rq;
468
Borislav Petkov088b1b82009-01-02 13:34:47 +0100469 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200470
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100471 /*
472 * Some of the trailing request sense fields are optional,
473 * and some drives don't send them. Sigh.
474 */
475 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
Tejun Heo59a4f6f2009-04-19 07:00:41 +0900476 cmd->nleft > 0 && cmd->nleft <= 5)
477 cmd->nleft = 0;
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100478}
479
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200480int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
481 int write, void *buffer, unsigned *bufflen,
482 struct request_sense *sense, int timeout,
483 unsigned int cmd_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484{
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200485 struct cdrom_info *info = drive->driver_data;
486 struct request_sense local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 int retries = 10;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200488 unsigned int flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200490 if (!sense)
491 sense = &local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
Borislav Petkov088b1b82009-01-02 13:34:47 +0100493 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
494 "cmd_flags: 0x%x",
495 cmd[0], write, timeout, cmd_flags);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200496
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200497 /* start of retry loop */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 do {
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200499 struct request *rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200502 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
503
504 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
505 rq->cmd_type = REQ_TYPE_ATA_PC;
506 rq->sense = sense;
507 rq->cmd_flags |= cmd_flags;
508 rq->timeout = timeout;
509 if (buffer) {
510 rq->data = buffer;
511 rq->data_len = *bufflen;
512 }
513
514 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
515
516 if (buffer)
517 *bufflen = rq->data_len;
518
519 flags = rq->cmd_flags;
520 blk_put_request(rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200522 /*
523 * FIXME: we should probably abort/retry or something in case of
524 * failure.
525 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200526 if (flags & REQ_FAILED) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200527 /*
528 * The request failed. Retry if it was due to a unit
529 * attention status (usually means media was changed).
530 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200531 struct request_sense *reqbuf = sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532
533 if (reqbuf->sense_key == UNIT_ATTENTION)
534 cdrom_saw_media_change(drive);
535 else if (reqbuf->sense_key == NOT_READY &&
536 reqbuf->asc == 4 && reqbuf->ascq != 4) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200537 /*
538 * The drive is in the process of loading
539 * a disk. Retry, but wait a little to give
540 * the drive time to complete the load.
541 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 ssleep(2);
543 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200544 /* otherwise, don't retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 retries = 0;
546 }
547 --retries;
548 }
549
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200550 /* end of retry loop */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200551 } while ((flags & REQ_FAILED) && retries >= 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200553 /* return an error if the command failed */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200554 return (flags & REQ_FAILED) ? -EIO : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555}
556
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200557static void ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
558{
559 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
560
561 if (cmd->tf_flags & IDE_TFLAG_WRITE)
562 nr_bytes -= cmd->last_xfer_len;
563
564 if (nr_bytes > 0)
565 ide_complete_rq(drive, 0, nr_bytes);
566}
567
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
569{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200570 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200571 struct ide_cmd *cmd = &hwif->cmd;
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100572 struct request *rq = hwif->rq;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100573 ide_expiry_t *expiry = NULL;
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200574 int dma_error = 0, dma, thislen, uptodate = 0;
Helge Dellera1f9a892009-04-22 20:33:40 +0200575 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0, nsectors;
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200576 int sense = blk_sense_request(rq);
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100577 unsigned int timeout;
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200578 u16 len;
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200579 u8 ireason, stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580
Borislav Petkov98036ab2009-04-08 14:12:53 +0200581 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200582
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200583 /* check for errors */
Borislav Petkov12469ac2008-10-13 21:39:49 +0200584 dma = drive->dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 if (dma) {
Borislav Petkov12469ac2008-10-13 21:39:49 +0200586 drive->dma = 0;
Bartlomiej Zolnierkiewicz88b41322009-03-31 20:15:22 +0200587 drive->waiting_for_dma = 0;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200588 dma_error = hwif->dma_ops->dma_end(drive);
Bartlomiej Zolnierkiewiczf094d4d82009-03-31 20:15:24 +0200589 ide_dma_unmap_sg(drive, cmd);
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100590 if (dma_error) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200591 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100592 write ? "write" : "read");
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100593 ide_dma_off(drive);
594 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 }
596
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200597 /* check status */
598 stat = hwif->tp_ops->read_status(hwif);
599
600 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
601 rc = cdrom_decode_status(drive, stat);
602 if (rc) {
603 if (rc == 2)
604 goto out_end;
605 return ide_stopped;
606 }
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200607 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200609 /* using dma, transfer is complete now */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 if (dma) {
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100611 if (dma_error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 return ide_error(drive, "dma error", stat);
Bartlomiej Zolnierkiewicz4a3d8cf2009-03-31 20:15:15 +0200613 uptodate = 1;
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200614 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 }
616
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200617 ide_read_bcount_and_ireason(drive, &len, &ireason);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100618
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200619 thislen = blk_fs_request(rq) ? len : cmd->nleft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 if (thislen > len)
621 thislen = len;
622
Borislav Petkov088b1b82009-01-02 13:34:47 +0100623 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
624 stat, thislen);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200625
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200626 /* If DRQ is clear, the command has completed. */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200627 if ((stat & ATA_DRQ) == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100628 if (blk_fs_request(rq)) {
629 /*
630 * If we're not done reading/writing, complain.
631 * Otherwise, complete the command normally.
632 */
633 uptodate = 1;
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200634 if (cmd->nleft > 0) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200635 printk(KERN_ERR PFX "%s: %s: data underrun "
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200636 "(%u bytes)\n", drive->name, __func__,
637 cmd->nleft);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100638 if (!write)
639 rq->cmd_flags |= REQ_FAILED;
640 uptodate = 0;
641 }
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100642 } else if (!blk_pc_request(rq)) {
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200643 ide_cd_request_sense_fixup(drive, cmd);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200644 /* complain if we still have data left to transfer */
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200645 uptodate = cmd->nleft ? 0 : 1;
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200646 if (uptodate == 0)
647 rq->cmd_flags |= REQ_FAILED;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100648 }
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200649 goto out_end;
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500650 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200652 /* check which way to transfer data */
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200653 rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
654 if (rc)
655 goto out_end;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100656
Bartlomiej Zolnierkiewicz06a449e2009-03-31 20:15:13 +0200657 cmd->last_xfer_len = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658
Borislav Petkov088b1b82009-01-02 13:34:47 +0100659 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
660 "ireason: 0x%x",
661 rq->cmd_type, ireason);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200662
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200663 /* transfer data */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 while (thislen > 0) {
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200665 int blen = min_t(int, thislen, cmd->nleft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666
Bartlomiej Zolnierkiewicz14fa91c2009-03-31 20:15:16 +0200667 if (cmd->nleft == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200670 ide_pio_bytes(drive, cmd, write, blen);
671 cmd->last_xfer_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672
673 thislen -= blen;
674 len -= blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200676 if (sense && write == 0)
Andreas Schwabbcd88ac2008-02-26 21:50:35 +0100677 rq->sense_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 }
679
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200680 /* pad, if necessary */
Bartlomiej Zolnierkiewicz14fa91c2009-03-31 20:15:16 +0200681 if (len > 0) {
682 if (blk_fs_request(rq) == 0 || write == 0)
683 ide_pad_transfer(drive, write, len);
684 else {
685 printk(KERN_ERR PFX "%s: confused, missing data\n",
686 drive->name);
687 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
688 }
689 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100691 if (blk_pc_request(rq)) {
692 timeout = rq->timeout;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100693 } else {
694 timeout = ATAPI_WAIT_PC;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100695 if (!blk_fs_request(rq))
Borislav Petkov4cad0852009-01-02 16:12:53 +0100696 expiry = ide_cd_expiry;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100697 }
698
Bartlomiej Zolnierkiewicz60c0cd02009-03-27 12:46:46 +0100699 hwif->expiry = expiry;
700 ide_set_handler(drive, cdrom_newpc_intr, timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 return ide_started;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100702
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200703out_end:
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200704 if (blk_pc_request(rq) && rc == 0) {
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +0100705 unsigned int dlen = rq->data_len;
706
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200707 rq->data_len = 0;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100708
Bartlomiej Zolnierkiewicz3c8a2cc2008-12-29 20:27:31 +0100709 if (blk_end_request(rq, 0, dlen))
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100710 BUG();
Bartlomiej Zolnierkiewicz1d0bf582008-12-29 20:27:30 +0100711
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100712 hwif->rq = NULL;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100713 } else {
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200714 if (sense && uptodate)
715 ide_cd_complete_failed_rq(drive, rq);
716
717 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200718 if (cmd->nleft == 0)
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200719 uptodate = 1;
720 } else {
721 if (uptodate <= 0 && rq->errors == 0)
722 rq->errors = -EIO;
723 }
724
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200725 if (uptodate == 0)
726 ide_cd_error_cmd(drive, cmd);
727
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200728 /* make sure it's fully ended */
729 if (blk_pc_request(rq))
730 nsectors = (rq->data_len + 511) >> 9;
731 else
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200732 nsectors = rq->hard_nr_sectors;
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200733
734 if (nsectors == 0)
735 nsectors = 1;
736
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200737 if (blk_fs_request(rq) == 0) {
738 rq->data_len -= (cmd->nbytes - cmd->nleft);
739 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
740 rq->data_len += cmd->last_xfer_len;
741 }
742
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200743 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
744
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200745 if (sense && rc == 2)
746 ide_error(drive, "request sense failure", stat);
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100747 }
748 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749}
750
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100751static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752{
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100753 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200754 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100755 int write = rq_data_dir(rq) == WRITE;
756 unsigned short sectors_per_frame =
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200757 queue_hardsect_size(q) >> SECTOR_BITS;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100758
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200759 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
Borislav Petkov088b1b82009-01-02 13:34:47 +0100760 "secs_per_frame: %u",
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200761 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200762
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100763 if (write) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200764 /* disk has become write protected */
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200765 if (get_disk_ro(cd->disk))
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100766 return ide_stopped;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100767 } else {
768 /*
769 * We may be retrying this request after an error. Fix up any
770 * weirdness which might be present in the request packet.
771 */
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200772 q->prep_rq_fn(q, rq);
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100773 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200775 /* fs requests *must* be hardware frame aligned */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200777 (rq->sector & (sectors_per_frame - 1)))
778 return ide_stopped;
779
780 /* use DMA, if possible */
781 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100783 if (write)
784 cd->devinfo.media_written = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200786 rq->timeout = ATAPI_WAIT_PC;
787
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200788 return ide_started;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789}
790
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200791static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
Borislav Petkov088b1b82009-01-02 13:34:47 +0100794 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
795 rq->cmd[0], rq->cmd_type);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200796
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +0100797 if (blk_pc_request(rq))
798 rq->cmd_flags |= REQ_QUIET;
799 else
800 rq->cmd_flags &= ~REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801
Borislav Petkov12469ac2008-10-13 21:39:49 +0200802 drive->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200804 /* sg request */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200805 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
806 struct request_queue *q = drive->queue;
807 unsigned int alignment;
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200808 char *buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200810 if (rq->bio)
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200811 buf = bio_data(rq->bio);
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200812 else
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200813 buf = rq->data;
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200814
Borislav Petkov12469ac2008-10-13 21:39:49 +0200815 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816
817 /*
818 * check if dma is safe
Linus Torvalds5d9e4ea2005-05-27 07:36:17 -0700819 *
820 * NOTE! The "len" and "addr" checks should possibly have
821 * separate masks.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200823 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
Borislav Petkov9bd27cb2008-11-02 21:40:07 +0100824 if ((unsigned long)buf & alignment
825 || rq->data_len & q->dma_pad_mask
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200826 || object_is_on_stack(buf))
Borislav Petkov12469ac2008-10-13 21:39:49 +0200827 drive->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829}
830
Borislav Petkov99384ae2008-07-16 20:33:45 +0200831static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
Borislav Petkove5e076a2008-04-26 22:25:15 +0200832 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833{
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100834 struct ide_cmd cmd;
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200835 int uptodate = 0, nsectors;
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100836
Borislav Petkov088b1b82009-01-02 13:34:47 +0100837 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
838 rq->cmd[0], (unsigned long long)block);
839
840 if (drive->debug_mask & IDE_DBG_RQ)
841 blk_dump_rq_flags(rq, "ide_cd_do_request");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200842
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200844 if (cdrom_start_rw(drive, rq) == ide_stopped)
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200845 goto out_end;
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +0100846 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
Jens Axboecea28852006-10-12 15:08:45 +0200847 rq->cmd_type == REQ_TYPE_ATA_PC) {
Borislav Petkov7fcebda2008-07-16 20:33:46 +0200848 if (!rq->timeout)
849 rq->timeout = ATAPI_WAIT_PC;
850
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200851 cdrom_do_block_pc(drive, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +0200852 } else if (blk_special_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200853 /* right now this can only be a reset... */
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200854 uptodate = 1;
855 goto out_end;
Borislav Petkovab9d6e32008-07-16 20:33:45 +0200856 } else {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200857 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
Bartlomiej Zolnierkiewicz5ed57ad2009-03-31 20:15:05 +0200858 if (rq->errors == 0)
859 rq->errors = -EIO;
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200860 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861 }
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200862
Borislav Petkovc457ce82009-04-19 07:00:42 +0900863 /* prepare sense request for this command */
864 ide_prep_sense(drive, rq);
865
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100866 memset(&cmd, 0, sizeof(cmd));
867
868 if (rq_data_dir(rq))
869 cmd.tf_flags |= IDE_TFLAG_WRITE;
870
871 cmd.rq = rq;
872
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200873 if (blk_fs_request(rq) || rq->data_len) {
874 ide_init_sg_cmd(&cmd, blk_fs_request(rq) ? (rq->nr_sectors << 9)
875 : rq->data_len);
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200876 ide_map_sg(drive, &cmd);
877 }
878
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100879 return ide_issue_pc(drive, &cmd);
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200880out_end:
Bartlomiej Zolnierkiewiczc4c69e22009-03-31 20:15:04 +0200881 nsectors = rq->hard_nr_sectors;
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200882
883 if (nsectors == 0)
884 nsectors = 1;
885
886 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
887
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200888 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889}
890
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200891/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 * Ioctl handling.
893 *
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200894 * Routines which queue packet commands take as a final argument a pointer to a
895 * request_sense struct. If execution of the command results in an error with a
896 * CHECK CONDITION status, this structure will be filled with the results of the
897 * subsequent request sense command. The pointer can also be NULL, in which case
898 * no sense information is returned.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899 */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200900static void msf_from_bcd(struct atapi_msf *msf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901{
Adrian Bunkfc99856a2008-08-18 21:40:04 +0200902 msf->minute = bcd2bin(msf->minute);
903 msf->second = bcd2bin(msf->second);
904 msf->frame = bcd2bin(msf->frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905}
906
Borislav Petkovf9afd182008-02-01 23:09:29 +0100907int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 struct cdrom_info *info = drive->driver_data;
910 struct cdrom_device_info *cdi = &info->devinfo;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200911 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912
Borislav Petkov088b1b82009-01-02 13:34:47 +0100913 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200914
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200915 memset(cmd, 0, BLK_MAX_CDB);
916 cmd[0] = GPCMD_TEST_UNIT_READY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +0100918 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200919 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
920 * instead of supporting the LOAD_UNLOAD opcode.
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +0100921 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200922 cmd[7] = cdi->sanyo_slot % 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923
Harvey Harrison141d3b22008-07-23 19:56:02 +0200924 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925}
926
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
928 unsigned long *sectors_per_frame,
929 struct request_sense *sense)
930{
931 struct {
Harvey Harrison141d3b22008-07-23 19:56:02 +0200932 __be32 lba;
933 __be32 blocklen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 } capbuf;
935
936 int stat;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200937 unsigned char cmd[BLK_MAX_CDB];
938 unsigned len = sizeof(capbuf);
Petr Tesarik938bb032008-08-05 18:17:02 +0200939 u32 blocklen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940
Borislav Petkov088b1b82009-01-02 13:34:47 +0100941 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200942
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200943 memset(cmd, 0, BLK_MAX_CDB);
944 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200946 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
947 REQ_QUIET);
Jens Axboee8e7b9e2008-07-24 22:53:35 +0200948 if (stat)
949 return stat;
950
951 /*
952 * Sanity check the given block size
953 */
Petr Tesarik938bb032008-08-05 18:17:02 +0200954 blocklen = be32_to_cpu(capbuf.blocklen);
955 switch (blocklen) {
956 case 512:
957 case 1024:
958 case 2048:
959 case 4096:
Jens Axboee8e7b9e2008-07-24 22:53:35 +0200960 break;
961 default:
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200962 printk(KERN_ERR PFX "%s: weird block size %u\n",
963 drive->name, blocklen);
964 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
965 drive->name);
Petr Tesarik938bb032008-08-05 18:17:02 +0200966 blocklen = 2048;
Jens Axboee8e7b9e2008-07-24 22:53:35 +0200967 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968 }
969
Jens Axboee8e7b9e2008-07-24 22:53:35 +0200970 *capacity = 1 + be32_to_cpu(capbuf.lba);
Petr Tesarik938bb032008-08-05 18:17:02 +0200971 *sectors_per_frame = blocklen >> SECTOR_BITS;
Borislav Petkov71b429ca2008-10-17 18:09:14 +0200972
Borislav Petkov088b1b82009-01-02 13:34:47 +0100973 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
974 *capacity, *sectors_per_frame);
Borislav Petkov71b429ca2008-10-17 18:09:14 +0200975
Jens Axboee8e7b9e2008-07-24 22:53:35 +0200976 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977}
978
979static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
980 int format, char *buf, int buflen,
981 struct request_sense *sense)
982{
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200983 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984
Borislav Petkov088b1b82009-01-02 13:34:47 +0100985 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200986
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200987 memset(cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200989 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
990 cmd[6] = trackno;
991 cmd[7] = (buflen >> 8);
992 cmd[8] = (buflen & 0xff);
993 cmd[9] = (format << 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994
995 if (msf_flag)
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200996 cmd[1] = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200998 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999}
1000
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001/* Try to read the entire TOC for the disk into our internal buffer. */
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001002int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003{
1004 int stat, ntracks, i;
1005 struct cdrom_info *info = drive->driver_data;
1006 struct cdrom_device_info *cdi = &info->devinfo;
1007 struct atapi_toc *toc = info->toc;
1008 struct {
1009 struct atapi_toc_header hdr;
1010 struct atapi_toc_entry ent;
1011 } ms_tmp;
1012 long last_written;
1013 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1014
Borislav Petkov088b1b82009-01-02 13:34:47 +01001015 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001016
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 if (toc == NULL) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001018 /* try to allocate space */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001019 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 if (toc == NULL) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001021 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001022 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 return -ENOMEM;
1024 }
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001025 info->toc = toc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 }
1027
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001028 /*
1029 * Check to see if the existing data is still valid. If it is,
1030 * just return.
1031 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032 (void) cdrom_check_status(drive, sense);
1033
Borislav Petkov570f89e2008-07-23 19:56:02 +02001034 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 return 0;
1036
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001037 /* try to get the total cdrom capacity and sector size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
1039 sense);
1040 if (stat)
1041 toc->capacity = 0x1fffff;
1042
1043 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001044 /* save a private copy of the TOC capacity for error handling */
Alan Coxdbe217a2006-06-25 05:47:44 -07001045 drive->probed_capacity = toc->capacity * sectors_per_frame;
1046
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047 blk_queue_hardsect_size(drive->queue,
1048 sectors_per_frame << SECTOR_BITS);
1049
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001050 /* first read just the header, so we know how long the TOC is */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1052 sizeof(struct atapi_toc_header), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001053 if (stat)
1054 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055
Borislav Petkov570f89e2008-07-23 19:56:02 +02001056 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001057 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1058 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060
1061 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1062 if (ntracks <= 0)
1063 return -EIO;
1064 if (ntracks > MAX_TRACKS)
1065 ntracks = MAX_TRACKS;
1066
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001067 /* now read the whole schmeer */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1069 (char *)&toc->hdr,
1070 sizeof(struct atapi_toc_header) +
1071 (ntracks + 1) *
1072 sizeof(struct atapi_toc_entry), sense);
1073
1074 if (stat && toc->hdr.first_track > 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001075 /*
1076 * Cds with CDI tracks only don't have any TOC entries, despite
1077 * of this the returned values are
1078 * first_track == last_track = number of CDI tracks + 1,
1079 * so that this case is indistinguishable from the same layout
1080 * plus an additional audio track. If we get an error for the
1081 * regular case, we assume a CDI without additional audio
1082 * tracks. In this case the readable TOC is empty (CDI tracks
1083 * are not included) and only holds the Leadout entry.
1084 *
1085 * Heiko Eißfeldt.
1086 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087 ntracks = 0;
1088 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1089 (char *)&toc->hdr,
1090 sizeof(struct atapi_toc_header) +
1091 (ntracks + 1) *
1092 sizeof(struct atapi_toc_entry),
1093 sense);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001094 if (stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095 return stat;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001096
Borislav Petkov570f89e2008-07-23 19:56:02 +02001097 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001098 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1099 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001100 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 toc->hdr.first_track = CDROM_LEADOUT;
1102 toc->hdr.last_track = CDROM_LEADOUT;
1103 }
1104 }
1105
1106 if (stat)
1107 return stat;
1108
Borislav Petkov7eb43fd2008-02-11 00:32:13 +01001109 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110
Borislav Petkov570f89e2008-07-23 19:56:02 +02001111 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001112 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1113 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001116 for (i = 0; i <= ntracks; i++) {
Borislav Petkov570f89e2008-07-23 19:56:02 +02001117 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1118 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001119 toc->ent[i].track = bcd2bin(toc->ent[i].track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120 msf_from_bcd(&toc->ent[i].addr.msf);
1121 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001122 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1123 toc->ent[i].addr.msf.second,
1124 toc->ent[i].addr.msf.frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125 }
1126
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127 if (toc->hdr.first_track != CDROM_LEADOUT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001128 /* read the multisession information */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1130 sizeof(ms_tmp), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001131 if (stat)
1132 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
1134 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1135 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +02001136 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1137 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1139 }
1140
Borislav Petkov570f89e2008-07-23 19:56:02 +02001141 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001142 /* re-read multisession information using MSF format */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1144 sizeof(ms_tmp), sense);
1145 if (stat)
1146 return stat;
1147
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001148 msf_from_bcd(&ms_tmp.ent.addr.msf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001150 ms_tmp.ent.addr.msf.second,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 ms_tmp.ent.addr.msf.frame);
1152 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153
1154 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1155
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001156 /* now try to get the total cdrom capacity */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157 stat = cdrom_get_last_written(cdi, &last_written);
1158 if (!stat && (last_written > toc->capacity)) {
1159 toc->capacity = last_written;
1160 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Alan Coxdbe217a2006-06-25 05:47:44 -07001161 drive->probed_capacity = toc->capacity * sectors_per_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162 }
1163
1164 /* Remember that we've read this stuff. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001165 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166
1167 return 0;
1168}
1169
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001170int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001171{
1172 struct cdrom_info *info = drive->driver_data;
1173 struct cdrom_device_info *cdi = &info->devinfo;
1174 struct packet_command cgc;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001175 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001176
Borislav Petkov088b1b82009-01-02 13:34:47 +01001177 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001178
Borislav Petkov570f89e2008-07-23 19:56:02 +02001179 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001180 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001181
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001182 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001183 do {
1184 /* we seem to get stat=0x01,err=0x00 the first time (??) */
Eric Piel9235e682005-06-23 00:10:29 -07001185 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1186 if (!stat)
1187 break;
1188 } while (--attempts);
1189 return stat;
1190}
1191
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001192void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001193{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001194 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001195 u16 curspeed, maxspeed;
1196
Borislav Petkov088b1b82009-01-02 13:34:47 +01001197 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001198
Borislav Petkov570f89e2008-07-23 19:56:02 +02001199 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
Harvey Harrison141d3b22008-07-23 19:56:02 +02001200 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1201 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
Eric Piel9235e682005-06-23 00:10:29 -07001202 } else {
Harvey Harrison141d3b22008-07-23 19:56:02 +02001203 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1204 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
Eric Piel9235e682005-06-23 00:10:29 -07001205 }
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001206
Borislav Petkov088b1b82009-01-02 13:34:47 +01001207 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1208 curspeed, maxspeed);
Borislav Petkov71b429ca2008-10-17 18:09:14 +02001209
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001210 cd->current_speed = (curspeed + (176/2)) / 176;
1211 cd->max_speed = (maxspeed + (176/2)) / 176;
Eric Piel9235e682005-06-23 00:10:29 -07001212}
1213
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001214#define IDE_CD_CAPABILITIES \
1215 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1216 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1217 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1218 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1219 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220
Linus Torvalds1da177e2005-04-16 15:20:36 -07001221static struct cdrom_device_ops ide_cdrom_dops = {
1222 .open = ide_cdrom_open_real,
1223 .release = ide_cdrom_release_real,
1224 .drive_status = ide_cdrom_drive_status,
1225 .media_changed = ide_cdrom_check_media_change_real,
1226 .tray_move = ide_cdrom_tray_move,
1227 .lock_door = ide_cdrom_lock_door,
1228 .select_speed = ide_cdrom_select_speed,
1229 .get_last_session = ide_cdrom_get_last_session,
1230 .get_mcn = ide_cdrom_get_mcn,
1231 .reset = ide_cdrom_reset,
1232 .audio_ioctl = ide_cdrom_audio_ioctl,
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001233 .capability = IDE_CD_CAPABILITIES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 .generic_packet = ide_cdrom_packet,
1235};
1236
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001237static int ide_cdrom_register(ide_drive_t *drive, int nslots)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238{
1239 struct cdrom_info *info = drive->driver_data;
1240 struct cdrom_device_info *devinfo = &info->devinfo;
1241
Borislav Petkov088b1b82009-01-02 13:34:47 +01001242 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001243
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244 devinfo->ops = &ide_cdrom_dops;
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001245 devinfo->speed = info->current_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 devinfo->capacity = nslots;
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001247 devinfo->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 strcpy(devinfo->name, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249
Borislav Petkov570f89e2008-07-23 19:56:02 +02001250 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
Bartlomiej Zolnierkiewicz3cbd8142007-12-24 15:23:43 +01001251 devinfo->mask |= CDC_SELECT_SPEED;
1252
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 devinfo->disk = info->disk;
1254 return register_cdrom(devinfo);
1255}
1256
Borislav Petkove5e076a2008-04-26 22:25:15 +02001257static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001259 struct cdrom_info *cd = drive->driver_data;
1260 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001261 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1262 mechtype_t mechtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263 int nslots = 1;
1264
Borislav Petkov088b1b82009-01-02 13:34:47 +01001265 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1266 drive->media, drive->atapi_flags);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001267
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001268 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1269 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1270 CDC_MO_DRIVE | CDC_RAM);
1271
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 if (drive->media == ide_optical) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001273 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001274 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001275 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 return nslots;
1277 }
1278
Borislav Petkov570f89e2008-07-23 19:56:02 +02001279 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1280 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001281 cdi->mask &= ~CDC_PLAY_AUDIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282 return nslots;
1283 }
1284
1285 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001286 * We have to cheat a little here. the packet will eventually be queued
1287 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1288 * Since this device hasn't been registered with the Uniform layer yet,
1289 * it can't do this. Same goes for cdi->ops.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001290 */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001291 cdi->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292 cdi->ops = &ide_cdrom_dops;
1293
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001294 if (ide_cdrom_get_capabilities(drive, buf))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 return 0;
1296
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001297 if ((buf[8 + 6] & 0x01) == 0)
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +02001298 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001299 if (buf[8 + 6] & 0x08)
Borislav Petkov570f89e2008-07-23 19:56:02 +02001300 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001301 if (buf[8 + 3] & 0x01)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001302 cdi->mask &= ~CDC_CD_R;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001303 if (buf[8 + 3] & 0x02)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001304 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001305 if (buf[8 + 2] & 0x38)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001306 cdi->mask &= ~CDC_DVD;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001307 if (buf[8 + 3] & 0x20)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001308 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001309 if (buf[8 + 3] & 0x10)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001310 cdi->mask &= ~CDC_DVD_R;
Borislav Petkov570f89e2008-07-23 19:56:02 +02001311 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001312 cdi->mask &= ~CDC_PLAY_AUDIO;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001313
1314 mechtype = buf[8 + 6] >> 5;
Borislav Petkovf20f2582008-10-05 18:23:27 +02001315 if (mechtype == mechtype_caddy ||
1316 mechtype == mechtype_popup ||
1317 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001318 cdi->mask |= CDC_CLOSE_TRAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320 if (cdi->sanyo_slot > 0) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001321 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 nslots = 3;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001323 } else if (mechtype == mechtype_individual_changer ||
1324 mechtype == mechtype_cartridge_changer) {
Bartlomiej Zolnierkiewicz2609d062008-02-01 23:09:19 +01001325 nslots = cdrom_number_of_slots(cdi);
1326 if (nslots > 1)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001327 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328 }
1329
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001330 ide_cdrom_update_speed(drive, buf);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001331
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001332 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001333
1334 /* don't print speed if the drive reported 0 */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001335 if (cd->max_speed)
1336 printk(KERN_CONT " %dX", cd->max_speed);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001337
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001338 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001340 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1341 printk(KERN_CONT " DVD%s%s",
1342 (cdi->mask & CDC_DVD_R) ? "" : "-R",
Borislav Petkov419a5b62008-10-17 18:09:14 +02001343 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001345 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1346 printk(KERN_CONT " CD%s%s",
1347 (cdi->mask & CDC_CD_R) ? "" : "-R",
1348 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001350 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1351 printk(KERN_CONT " changer w/%d slots", nslots);
1352 else
1353 printk(KERN_CONT " drive");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001355 printk(KERN_CONT ", %dkB Cache\n",
1356 be16_to_cpup((__be16 *)&buf[8 + 12]));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357
1358 return nslots;
1359}
1360
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001361/* standard prep_rq_fn that builds 10 byte cmds */
Jens Axboe165125e2007-07-24 09:28:11 +02001362static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363{
1364 int hard_sect = queue_hardsect_size(q);
1365 long block = (long)rq->hard_sector / (hard_sect >> 9);
1366 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1367
FUJITA Tomonorid34c87e2008-04-29 14:37:52 +02001368 memset(rq->cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369
1370 if (rq_data_dir(rq) == READ)
1371 rq->cmd[0] = GPCMD_READ_10;
1372 else
1373 rq->cmd[0] = GPCMD_WRITE_10;
1374
1375 /*
1376 * fill in lba
1377 */
1378 rq->cmd[2] = (block >> 24) & 0xff;
1379 rq->cmd[3] = (block >> 16) & 0xff;
1380 rq->cmd[4] = (block >> 8) & 0xff;
1381 rq->cmd[5] = block & 0xff;
1382
1383 /*
1384 * and transfer length
1385 */
1386 rq->cmd[7] = (blocks >> 8) & 0xff;
1387 rq->cmd[8] = blocks & 0xff;
1388 rq->cmd_len = 10;
1389 return BLKPREP_OK;
1390}
1391
1392/*
1393 * Most of the SCSI commands are supported directly by ATAPI devices.
1394 * This transform handles the few exceptions.
1395 */
1396static int ide_cdrom_prep_pc(struct request *rq)
1397{
1398 u8 *c = rq->cmd;
1399
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001400 /* transform 6-byte read/write commands to the 10-byte version */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401 if (c[0] == READ_6 || c[0] == WRITE_6) {
1402 c[8] = c[4];
1403 c[5] = c[3];
1404 c[4] = c[2];
1405 c[3] = c[1] & 0x1f;
1406 c[2] = 0;
1407 c[1] &= 0xe0;
1408 c[0] += (READ_10 - READ_6);
1409 rq->cmd_len = 10;
1410 return BLKPREP_OK;
1411 }
1412
1413 /*
1414 * it's silly to pretend we understand 6-byte sense commands, just
1415 * reject with ILLEGAL_REQUEST and the caller should take the
1416 * appropriate action
1417 */
1418 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1419 rq->errors = ILLEGAL_REQUEST;
1420 return BLKPREP_KILL;
1421 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001422
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423 return BLKPREP_OK;
1424}
1425
Jens Axboe165125e2007-07-24 09:28:11 +02001426static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427{
Jens Axboe4aff5e22006-08-10 08:44:47 +02001428 if (blk_fs_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 return ide_cdrom_prep_fs(q, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001430 else if (blk_pc_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 return ide_cdrom_prep_pc(rq);
1432
1433 return 0;
1434}
1435
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001436struct cd_list_entry {
1437 const char *id_model;
1438 const char *id_firmware;
1439 unsigned int cd_flags;
1440};
1441
Borislav Petkov5e657a92008-04-26 22:25:15 +02001442#ifdef CONFIG_IDE_PROC_FS
1443static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1444{
1445 unsigned long capacity, sectors_per_frame;
1446
1447 if (cdrom_read_capacity(drive, &capacity, &sectors_per_frame, NULL))
1448 return 0;
1449
1450 return capacity * sectors_per_frame;
1451}
1452
Borislav Petkove5e076a2008-04-26 22:25:15 +02001453static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1454 int count, int *eof, void *data)
Borislav Petkov5e657a92008-04-26 22:25:15 +02001455{
1456 ide_drive_t *drive = data;
1457 int len;
1458
1459 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1460 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1461}
1462
1463static ide_proc_entry_t idecd_proc[] = {
1464 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1465 { NULL, 0, NULL, NULL }
1466};
1467
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001468static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1469{
1470 return idecd_proc;
1471}
1472
1473static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1474{
Bartlomiej Zolnierkiewicz519d6802008-12-29 20:27:38 +01001475 return NULL;
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001476}
Borislav Petkov5e657a92008-04-26 22:25:15 +02001477#endif
1478
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001479static const struct cd_list_entry ide_cd_quirks_list[] = {
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001480 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001481 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001482 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001483 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1484 IDE_AFLAG_PRE_ATAPI12, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001485 /* Vertos 300, some versions of this drive like to talk BCD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001486 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001487 /* Vertos 600 ESD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001488 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001489 /*
1490 * Sanyo 3 CD changer uses a non-standard command for CD changing
1491 * (by default standard ATAPI support for CD changers is used).
1492 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001493 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1494 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1495 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001496 /* Stingray 8X CD-ROM. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001497 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001498 /*
1499 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1500 * mode sense page capabilities size, but older drives break.
1501 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001502 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1503 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001504 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001505 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001506 /*
1507 * Some drives used by Apple don't advertise audio play
1508 * but they do support reading TOC & audio datas.
1509 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001510 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1511 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1512 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1513 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1514 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
Bodo Eggertf3e85ee2008-10-05 18:23:28 +02001515 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
Borislav Petkovf20f2582008-10-05 18:23:27 +02001516 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
Márton Németh64c2eae22008-10-23 23:22:09 +02001517 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001518 { NULL, NULL, 0 }
1519};
1520
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001521static unsigned int ide_cd_flags(u16 *id)
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001522{
1523 const struct cd_list_entry *cle = ide_cd_quirks_list;
1524
1525 while (cle->id_model) {
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001526 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001527 (cle->id_firmware == NULL ||
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001528 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001529 return cle->cd_flags;
1530 cle++;
1531 }
1532
1533 return 0;
1534}
1535
Borislav Petkove5e076a2008-04-26 22:25:15 +02001536static int ide_cdrom_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001538 struct cdrom_info *cd = drive->driver_data;
1539 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicze698ea82009-03-31 20:15:16 +02001540 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001541 u16 *id = drive->id;
1542 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001543 int nslots;
1544
Borislav Petkov088b1b82009-01-02 13:34:47 +01001545 ide_debug_log(IDE_DBG_PROBE, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001546
Bartlomiej Zolnierkiewicze698ea82009-03-31 20:15:16 +02001547 blk_queue_prep_rq(q, ide_cdrom_prep_fn);
1548 blk_queue_dma_alignment(q, 31);
1549 blk_queue_update_dma_pad(q, 15);
1550
1551 q->unplug_delay = max((1 * HZ) / 1000, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552
Bartlomiej Zolnierkiewiczfe11edf2008-10-17 18:09:11 +02001553 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1554 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555
Borislav Petkov570f89e2008-07-23 19:56:02 +02001556 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001557 fw_rev[4] == '1' && fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001558 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1559 IDE_AFLAG_TOCADDR_AS_BCD);
1560 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001561 fw_rev[4] == '1' && fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001562 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1563 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001564 /* 3 => use CD in slot 0 */
1565 cdi->sanyo_slot = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001566
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001567 nslots = ide_cdrom_probe_capabilities(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568
Bartlomiej Zolnierkiewicze698ea82009-03-31 20:15:16 +02001569 blk_queue_hardsect_size(q, CD_FRAMESIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571 if (ide_cdrom_register(drive, nslots)) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001572 printk(KERN_ERR PFX "%s: %s failed to register device with the"
Borislav Petkov83c85652008-04-26 22:25:15 +02001573 " cdrom driver.\n", drive->name, __func__);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001574 cd->devinfo.handle = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001575 return 1;
1576 }
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +02001577
1578 ide_proc_register_driver(drive, cd->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579 return 0;
1580}
1581
Russell King4031bbe2006-01-06 11:41:00 +00001582static void ide_cd_remove(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583{
1584 struct cdrom_info *info = drive->driver_data;
1585
Borislav Petkov088b1b82009-01-02 13:34:47 +01001586 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001587
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001588 ide_proc_unregister_driver(drive, info->driver);
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001589 device_del(&info->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001590 del_gendisk(info->disk);
1591
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001592 mutex_lock(&idecd_ref_mutex);
1593 put_device(&info->dev);
1594 mutex_unlock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595}
1596
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001597static void ide_cd_release(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001598{
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001599 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600 struct cdrom_device_info *devinfo = &info->devinfo;
1601 ide_drive_t *drive = info->drive;
1602 struct gendisk *g = info->disk;
1603
Borislav Petkov088b1b82009-01-02 13:34:47 +01001604 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001605
Jesper Juhl6044ec82005-11-07 01:01:32 -08001606 kfree(info->toc);
Akinobu Mita0a0c4112008-03-26 12:09:02 +01001607 if (devinfo->handle == drive)
1608 unregister_cdrom(devinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 drive->driver_data = NULL;
1610 blk_queue_prep_rq(drive->queue, NULL);
1611 g->private_data = NULL;
1612 put_disk(g);
1613 kfree(info);
1614}
1615
Russell King4031bbe2006-01-06 11:41:00 +00001616static int ide_cd_probe(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001618static struct ide_driver ide_cdrom_driver = {
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001619 .gen_driver = {
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001620 .owner = THIS_MODULE,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001621 .name = "ide-cdrom",
1622 .bus = &ide_bus_type,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001623 },
Russell King4031bbe2006-01-06 11:41:00 +00001624 .probe = ide_cd_probe,
1625 .remove = ide_cd_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001626 .version = IDECD_VERSION,
Borislav Petkov99384ae2008-07-16 20:33:45 +02001627 .do_request = ide_cd_do_request,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001628#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001629 .proc_entries = ide_cd_proc_entries,
1630 .proc_devsets = ide_cd_proc_devsets,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001631#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001632};
1633
Al Viro488ca602008-03-02 10:26:23 -05001634static int idecd_open(struct block_device *bdev, fmode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635{
Al Viro488ca602008-03-02 10:26:23 -05001636 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001637 int rc = -ENOMEM;
1638
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001639 if (!info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640 return -ENXIO;
1641
Al Viro488ca602008-03-02 10:26:23 -05001642 rc = cdrom_open(&info->devinfo, bdev, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001643
1644 if (rc < 0)
1645 ide_cd_put(info);
1646
1647 return rc;
1648}
1649
Al Viro488ca602008-03-02 10:26:23 -05001650static int idecd_release(struct gendisk *disk, fmode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001652 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001653
Al Viro488ca602008-03-02 10:26:23 -05001654 cdrom_release(&info->devinfo, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655
1656 ide_cd_put(info);
1657
1658 return 0;
1659}
1660
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001661static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1662{
1663 struct packet_command cgc;
1664 char buffer[16];
1665 int stat;
1666 char spindown;
1667
1668 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1669 return -EFAULT;
1670
1671 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1672
1673 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1674 if (stat)
1675 return stat;
1676
1677 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1678 return cdrom_mode_select(cdi, &cgc);
1679}
1680
1681static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1682{
1683 struct packet_command cgc;
1684 char buffer[16];
1685 int stat;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001686 char spindown;
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001687
1688 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1689
1690 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1691 if (stat)
1692 return stat;
1693
1694 spindown = buffer[11] & 0x0f;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001695 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001696 return -EFAULT;
1697 return 0;
1698}
1699
Al Viro488ca602008-03-02 10:26:23 -05001700static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701 unsigned int cmd, unsigned long arg)
1702{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001703 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704 int err;
1705
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001706 switch (cmd) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001707 case CDROMSETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001708 return idecd_set_spindown(&info->devinfo, arg);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001709 case CDROMGETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001710 return idecd_get_spindown(&info->devinfo, arg);
1711 default:
1712 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001713 }
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001714
Al Viro1bddd9e2008-09-02 17:19:43 -04001715 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716 if (err == -EINVAL)
Al Viro488ca602008-03-02 10:26:23 -05001717 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718
1719 return err;
1720}
1721
1722static int idecd_media_changed(struct gendisk *disk)
1723{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001724 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001725 return cdrom_media_changed(&info->devinfo);
1726}
1727
1728static int idecd_revalidate_disk(struct gendisk *disk)
1729{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001730 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731 struct request_sense sense;
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001732
1733 ide_cd_read_toc(info->drive, &sense);
1734
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735 return 0;
1736}
1737
1738static struct block_device_operations idecd_ops = {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001739 .owner = THIS_MODULE,
Al Viro488ca602008-03-02 10:26:23 -05001740 .open = idecd_open,
1741 .release = idecd_release,
1742 .locked_ioctl = idecd_ioctl,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001743 .media_changed = idecd_media_changed,
1744 .revalidate_disk = idecd_revalidate_disk
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745};
1746
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001747/* module options */
Borislav Petkov35d9b172008-10-13 21:39:49 +02001748static unsigned long debug_mask;
1749module_param(debug_mask, ulong, 0644);
1750
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1752
Russell King4031bbe2006-01-06 11:41:00 +00001753static int ide_cd_probe(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754{
1755 struct cdrom_info *info;
1756 struct gendisk *g;
1757 struct request_sense sense;
1758
Borislav Petkov088b1b82009-01-02 13:34:47 +01001759 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1760 drive->driver_req, drive->media);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001761
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762 if (!strstr("ide-cdrom", drive->driver_req))
1763 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001764
Linus Torvalds1da177e2005-04-16 15:20:36 -07001765 if (drive->media != ide_cdrom && drive->media != ide_optical)
1766 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001767
Borislav Petkov35d9b172008-10-13 21:39:49 +02001768 drive->debug_mask = debug_mask;
Borislav Petkovd6251d42009-01-06 17:20:58 +01001769 drive->irq_handler = cdrom_newpc_intr;
Borislav Petkov35d9b172008-10-13 21:39:49 +02001770
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -08001771 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772 if (info == NULL) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001773 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001774 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001775 goto failed;
1776 }
1777
1778 g = alloc_disk(1 << PARTN_BITS);
1779 if (!g)
1780 goto out_free_cd;
1781
1782 ide_init_disk(g, drive);
1783
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001784 info->dev.parent = &drive->gendev;
1785 info->dev.release = ide_cd_release;
1786 dev_set_name(&info->dev, dev_name(&drive->gendev));
1787
1788 if (device_register(&info->dev))
1789 goto out_free_disk;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001790
1791 info->drive = drive;
1792 info->driver = &ide_cdrom_driver;
1793 info->disk = g;
1794
1795 g->private_data = &info->driver;
1796
1797 drive->driver_data = info;
1798
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799 g->minors = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 g->driverfs_dev = &drive->gendev;
1801 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1802 if (ide_cdrom_setup(drive)) {
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001803 put_device(&info->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804 goto failed;
1805 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001807 ide_cd_read_toc(drive, &sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808 g->fops = &idecd_ops;
1809 g->flags |= GENHD_FL_REMOVABLE;
1810 add_disk(g);
1811 return 0;
1812
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001813out_free_disk:
1814 put_disk(g);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001815out_free_cd:
1816 kfree(info);
1817failed:
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001818 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819}
1820
1821static void __exit ide_cdrom_exit(void)
1822{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001823 driver_unregister(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824}
Bartlomiej Zolnierkiewicz17514e82005-11-19 22:24:35 +01001825
1826static int __init ide_cdrom_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827{
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001828 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001829 return driver_register(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830}
1831
Kay Sievers263756e2005-12-12 18:03:44 +01001832MODULE_ALIAS("ide:*m-cdrom*");
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +01001833MODULE_ALIAS("ide-cd");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834module_init(ide_cdrom_init);
1835module_exit(ide_cdrom_exit);
1836MODULE_LICENSE("GPL");