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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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
210 struct request *failed_command)
211{
212 struct cdrom_info *info = drive->driver_data;
Borislav Petkov3f2154d2009-01-27 17:42:28 +0100213 struct request *rq = &drive->request_sense_rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
Borislav Petkov088b1b82009-01-02 13:34:47 +0100215 ide_debug_log(IDE_DBG_SENSE, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 if (sense == NULL)
218 sense = &info->sense_data;
219
220 /* stuff the sense request in front of our current request */
FUJITA Tomonoried820f12008-07-15 21:21:45 +0200221 blk_rq_init(NULL, rq);
222 rq->cmd_type = REQ_TYPE_ATA_PC;
223 rq->rq_disk = info->disk;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224
225 rq->data = sense;
226 rq->cmd[0] = GPCMD_REQUEST_SENSE;
Borislav Petkove5e076a2008-04-26 22:25:15 +0200227 rq->cmd[4] = 18;
228 rq->data_len = 18;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
Jens Axboe4aff5e22006-08-10 08:44:47 +0200230 rq->cmd_type = REQ_TYPE_SENSE;
Bartlomiej Zolnierkiewicze8a96aa2008-07-15 21:21:41 +0200231 rq->cmd_flags |= REQ_PREEMPT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232
233 /* NOTE! Save the failed command in "rq->buffer" */
234 rq->buffer = (void *) failed_command;
235
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200236 if (failed_command)
Borislav Petkov088b1b82009-01-02 13:34:47 +0100237 ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x",
238 failed_command->cmd[0]);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200239
Bartlomiej Zolnierkiewicz18660822009-03-24 23:22:44 +0100240 drive->hwif->rq = NULL;
241
242 elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243}
244
Bartlomiej Zolnierkiewicz299c4852009-03-31 20:15:01 +0200245static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
246{
247 /*
248 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
249 * failed request
250 */
251 struct request *failed = (struct request *)rq->buffer;
252 struct cdrom_info *info = drive->driver_data;
253 void *sense = &info->sense_data;
254
255 if (failed) {
256 if (failed->sense) {
257 sense = failed->sense;
258 failed->sense_len = rq->sense_len;
259 }
260 cdrom_analyze_sense_data(drive, failed, sense);
261
262 if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
263 BUG();
264 } else
265 cdrom_analyze_sense_data(drive, NULL, sense);
266}
267
Borislav Petkov805ec582009-04-08 14:12:52 +0200268
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200269/*
Borislav Petkov805ec582009-04-08 14:12:52 +0200270 * Allow the drive 5 seconds to recover; some devices will return NOT_READY
271 * while flushing data from cache.
272 *
273 * returns: 0 failed (write timeout expired)
274 * 1 success
275 */
276static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
277{
278
279 struct cdrom_info *info = drive->driver_data;
280
281 if (!rq->errors)
282 info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
283
284 rq->errors = 1;
285
286 if (time_after(jiffies, info->write_timeout))
287 return 0;
288 else {
289 struct request_queue *q = drive->queue;
290 unsigned long flags;
291
292 /*
293 * take a breather relying on the unplug timer to kick us again
294 */
295
296 spin_lock_irqsave(q->queue_lock, flags);
297 blk_plug_device(q);
298 spin_unlock_irqrestore(q->queue_lock, flags);
299
300 return 1;
301 }
302}
303
304/**
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200305 * Returns:
306 * 0: if the request should be continued.
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200307 * 1: if the request will be going through error recovery.
308 * 2: if the request should be ended.
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200309 */
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200310static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200312 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100313 struct request *rq = hwif->rq;
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200314 int err, sense_key, do_end_request = 0;
Borislav Petkovdfa44112009-04-08 14:12:53 +0200315 u8 quiet = rq->cmd_flags & REQ_QUIET;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200317 /* get the IDE error register */
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +0100318 err = ide_read_error(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 sense_key = err >> 4;
320
Borislav Petkov98036ab2009-04-08 14:12:53 +0200321 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
322 "stat 0x%x",
323 rq->cmd[0], rq->cmd_type, err, stat);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200324
Jens Axboe4aff5e22006-08-10 08:44:47 +0200325 if (blk_sense_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200326 /*
327 * We got an error trying to get sense info from the drive
328 * (probably while trying to recover from a former error).
329 * Just give up.
330 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200331 rq->cmd_flags |= REQ_FAILED;
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200332 return 2;
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200333 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200335 /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
336 if (blk_pc_request(rq) && !rq->errors)
337 rq->errors = SAM_STAT_CHECK_CONDITION;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200339 if (blk_noretry_request(rq))
340 do_end_request = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200342 switch (sense_key) {
343 case NOT_READY:
Borislav Petkov3c8a48e2009-04-08 14:13:03 +0200344 if (blk_fs_request(rq) && rq_data_dir(rq) == WRITE) {
345 if (ide_cd_breathe(drive, rq))
346 return 1;
347 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +0200348 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200350 if (blk_fs_request(rq) && !quiet)
351 printk(KERN_ERR PFX "%s: tray open\n",
352 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 }
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200354 do_end_request = 1;
355 break;
356 case UNIT_ATTENTION:
357 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200359 if (blk_fs_request(rq) == 0)
360 return 0;
361
362 /*
363 * Arrange to retry the request but be sure to give up if we've
364 * retried too many times.
365 */
366 if (++rq->errors > ERROR_MAX)
Bartlomiej Zolnierkiewicz1920c482009-04-08 14:12:54 +0200367 do_end_request = 1;
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200368 break;
369 case ILLEGAL_REQUEST:
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200370 /*
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200371 * Don't print error message for this condition -- SFF8090i
372 * indicates that 5/24/00 is the correct response to a request
373 * to close the tray if the drive doesn't have that capability.
374 *
375 * cdrom_log_sense() knows this!
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200376 */
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200377 if (rq->cmd[0] == GPCMD_START_STOP_UNIT)
378 break;
379 /* fall-through */
380 case DATA_PROTECT:
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100381 /*
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200382 * No point in retrying after an illegal request or data
383 * protect error.
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100384 */
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200385 if (!quiet)
386 ide_dump_status(drive, "command error", stat);
387 do_end_request = 1;
388 break;
389 case MEDIUM_ERROR:
390 /*
391 * No point in re-trying a zillion times on a bad sector.
392 * If we got here the error is not correctable.
393 */
394 if (!quiet)
395 ide_dump_status(drive, "media error "
396 "(bad sector)", stat);
397 do_end_request = 1;
398 break;
399 case BLANK_CHECK:
400 /* disk appears blank? */
401 if (!quiet)
402 ide_dump_status(drive, "media error (blank)",
403 stat);
404 do_end_request = 1;
405 break;
406 default:
407 if (blk_fs_request(rq) == 0)
408 break;
409 if (err & ~ATA_ABORTED) {
410 /* go to the default handler for other errors */
411 ide_error(drive, "cdrom_decode_status", stat);
412 return 1;
413 } else if (++rq->errors > ERROR_MAX)
414 /* we've racked up too many retries, abort */
415 do_end_request = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 }
417
Bartlomiej Zolnierkiewicz674f0ea2009-04-08 14:12:54 +0200418 if (blk_fs_request(rq) == 0) {
419 rq->cmd_flags |= REQ_FAILED;
420 do_end_request = 1;
421 }
422
423 /*
424 * End a request through request sense analysis when we have sense data.
425 * We need this in order to perform end of media processing.
426 */
427 if (do_end_request)
428 goto end_request;
429
430 /* if we got a CHECK_CONDITION status, queue a request sense command */
431 if (stat & ATA_ERR)
432 cdrom_queue_request_sense(drive, NULL, NULL);
433 return 1;
434
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100435end_request:
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200436 if (stat & ATA_ERR) {
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100437 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100438 unsigned long flags;
439
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100440 spin_lock_irqsave(q->queue_lock, flags);
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100441 blkdev_dequeue_request(rq);
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100442 spin_unlock_irqrestore(q->queue_lock, flags);
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100443
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100444 hwif->rq = NULL;
Bartlomiej Zolnierkiewicz1d0bf582008-12-29 20:27:30 +0100445
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100446 cdrom_queue_request_sense(drive, rq->sense, rq);
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200447 return 1;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100448 } else
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200449 return 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450}
451
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200452/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 * Check the contents of the interrupt reason register from the cdrom
454 * and attempt to recover if there are problems. Returns 0 if everything's
455 * ok; nonzero if the request has been terminated.
456 */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100457static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
458 int len, int ireason, int rw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200460 ide_hwif_t *hwif = drive->hwif;
461
Borislav Petkov088b1b82009-01-02 13:34:47 +0100462 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200463
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100464 /*
465 * ireason == 0: the drive wants to receive data from us
466 * ireason == 2: the drive is expecting to transfer data to us
467 */
468 if (ireason == (!rw << 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 return 0;
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100470 else if (ireason == (rw << 1)) {
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100471
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200472 /* whoops... */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200473 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200474 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
Borislav Petkovae8789f2008-07-16 20:33:45 +0200476 ide_pad_transfer(drive, rw, len);
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100477 } else if (rw == 0 && ireason == 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200478 /*
479 * Some drives (ASUS) seem to tell us that status info is
480 * available. Just get it and ignore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200482 (void)hwif->tp_ops->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 return 0;
484 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200485 /* drive wants a command packet, or invalid ireason... */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200486 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200487 drive->name, __func__, ireason);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 }
489
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100490 if (rq->cmd_type == REQ_TYPE_ATA_PC)
491 rq->cmd_flags |= REQ_FAILED;
492
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 return -1;
494}
495
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200496static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100497{
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200498 struct request *rq = cmd->rq;
499
Borislav Petkov088b1b82009-01-02 13:34:47 +0100500 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200501
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100502 /*
503 * Some of the trailing request sense fields are optional,
504 * and some drives don't send them. Sigh.
505 */
506 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200507 cmd->nleft > 0 && cmd->nleft <= 5) {
508 unsigned int ofs = cmd->nbytes - cmd->nleft;
509
510 while (cmd->nleft > 0) {
511 *((u8 *)rq->data + ofs++) = 0;
512 cmd->nleft--;
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100513 }
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200514 }
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100515}
516
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200517int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
518 int write, void *buffer, unsigned *bufflen,
519 struct request_sense *sense, int timeout,
520 unsigned int cmd_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521{
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200522 struct cdrom_info *info = drive->driver_data;
523 struct request_sense local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 int retries = 10;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200525 unsigned int flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200527 if (!sense)
528 sense = &local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529
Borislav Petkov088b1b82009-01-02 13:34:47 +0100530 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
531 "cmd_flags: 0x%x",
532 cmd[0], write, timeout, cmd_flags);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200533
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200534 /* start of retry loop */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 do {
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200536 struct request *rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200539 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
540
541 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
542 rq->cmd_type = REQ_TYPE_ATA_PC;
543 rq->sense = sense;
544 rq->cmd_flags |= cmd_flags;
545 rq->timeout = timeout;
546 if (buffer) {
547 rq->data = buffer;
548 rq->data_len = *bufflen;
549 }
550
551 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
552
553 if (buffer)
554 *bufflen = rq->data_len;
555
556 flags = rq->cmd_flags;
557 blk_put_request(rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200559 /*
560 * FIXME: we should probably abort/retry or something in case of
561 * failure.
562 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200563 if (flags & REQ_FAILED) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200564 /*
565 * The request failed. Retry if it was due to a unit
566 * attention status (usually means media was changed).
567 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200568 struct request_sense *reqbuf = sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569
570 if (reqbuf->sense_key == UNIT_ATTENTION)
571 cdrom_saw_media_change(drive);
572 else if (reqbuf->sense_key == NOT_READY &&
573 reqbuf->asc == 4 && reqbuf->ascq != 4) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200574 /*
575 * The drive is in the process of loading
576 * a disk. Retry, but wait a little to give
577 * the drive time to complete the load.
578 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 ssleep(2);
580 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200581 /* otherwise, don't retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 retries = 0;
583 }
584 --retries;
585 }
586
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200587 /* end of retry loop */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200588 } while ((flags & REQ_FAILED) && retries >= 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200590 /* return an error if the command failed */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200591 return (flags & REQ_FAILED) ? -EIO : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592}
593
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200594static void ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
595{
596 unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
597
598 if (cmd->tf_flags & IDE_TFLAG_WRITE)
599 nr_bytes -= cmd->last_xfer_len;
600
601 if (nr_bytes > 0)
602 ide_complete_rq(drive, 0, nr_bytes);
603}
604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
606{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200607 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200608 struct ide_cmd *cmd = &hwif->cmd;
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100609 struct request *rq = hwif->rq;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100610 ide_expiry_t *expiry = NULL;
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200611 int dma_error = 0, dma, thislen, uptodate = 0;
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200612 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc, nsectors;
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200613 int sense = blk_sense_request(rq);
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100614 unsigned int timeout;
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200615 u16 len;
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200616 u8 ireason, stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617
Borislav Petkov98036ab2009-04-08 14:12:53 +0200618 ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200619
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200620 /* check for errors */
Borislav Petkov12469ac2008-10-13 21:39:49 +0200621 dma = drive->dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 if (dma) {
Borislav Petkov12469ac2008-10-13 21:39:49 +0200623 drive->dma = 0;
Bartlomiej Zolnierkiewicz88b41322009-03-31 20:15:22 +0200624 drive->waiting_for_dma = 0;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200625 dma_error = hwif->dma_ops->dma_end(drive);
Bartlomiej Zolnierkiewiczf094d4d82009-03-31 20:15:24 +0200626 ide_dma_unmap_sg(drive, cmd);
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100627 if (dma_error) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200628 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100629 write ? "write" : "read");
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100630 ide_dma_off(drive);
631 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 }
633
Borislav Petkov8e59bfd2009-04-08 14:12:51 +0200634 /* check status */
635 stat = hwif->tp_ops->read_status(hwif);
636
637 if (!OK_STAT(stat, 0, BAD_R_STAT)) {
638 rc = cdrom_decode_status(drive, stat);
639 if (rc) {
640 if (rc == 2)
641 goto out_end;
642 return ide_stopped;
643 }
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200644 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200646 /* using dma, transfer is complete now */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647 if (dma) {
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100648 if (dma_error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 return ide_error(drive, "dma error", stat);
Bartlomiej Zolnierkiewicz4a3d8cf2009-03-31 20:15:15 +0200650 uptodate = 1;
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200651 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 }
653
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200654 ide_read_bcount_and_ireason(drive, &len, &ireason);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100655
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200656 thislen = blk_fs_request(rq) ? len : cmd->nleft;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 if (thislen > len)
658 thislen = len;
659
Borislav Petkov088b1b82009-01-02 13:34:47 +0100660 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
661 stat, thislen);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200662
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200663 /* If DRQ is clear, the command has completed. */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200664 if ((stat & ATA_DRQ) == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100665 if (blk_fs_request(rq)) {
666 /*
667 * If we're not done reading/writing, complain.
668 * Otherwise, complete the command normally.
669 */
670 uptodate = 1;
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200671 if (cmd->nleft > 0) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200672 printk(KERN_ERR PFX "%s: %s: data underrun "
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200673 "(%u bytes)\n", drive->name, __func__,
674 cmd->nleft);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100675 if (!write)
676 rq->cmd_flags |= REQ_FAILED;
677 uptodate = 0;
678 }
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100679 } else if (!blk_pc_request(rq)) {
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200680 ide_cd_request_sense_fixup(drive, cmd);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200681 /* complain if we still have data left to transfer */
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200682 uptodate = cmd->nleft ? 0 : 1;
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200683 if (uptodate == 0)
684 rq->cmd_flags |= REQ_FAILED;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100685 }
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200686 goto out_end;
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500687 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200689 /* check which way to transfer data */
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200690 rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
691 if (rc)
692 goto out_end;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100693
Bartlomiej Zolnierkiewicz06a449e2009-03-31 20:15:13 +0200694 cmd->last_xfer_len = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695
Borislav Petkov088b1b82009-01-02 13:34:47 +0100696 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
697 "ireason: 0x%x",
698 rq->cmd_type, ireason);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200699
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200700 /* transfer data */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 while (thislen > 0) {
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200702 int blen = min_t(int, thislen, cmd->nleft);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703
Bartlomiej Zolnierkiewicz14fa91c2009-03-31 20:15:16 +0200704 if (cmd->nleft == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200707 ide_pio_bytes(drive, cmd, write, blen);
708 cmd->last_xfer_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709
710 thislen -= blen;
711 len -= blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200713 if (sense && write == 0)
Andreas Schwabbcd88ac2008-02-26 21:50:35 +0100714 rq->sense_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 }
716
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200717 /* pad, if necessary */
Bartlomiej Zolnierkiewicz14fa91c2009-03-31 20:15:16 +0200718 if (len > 0) {
719 if (blk_fs_request(rq) == 0 || write == 0)
720 ide_pad_transfer(drive, write, len);
721 else {
722 printk(KERN_ERR PFX "%s: confused, missing data\n",
723 drive->name);
724 blk_dump_rq_flags(rq, "cdrom_newpc_intr");
725 }
726 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100728 if (blk_pc_request(rq)) {
729 timeout = rq->timeout;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100730 } else {
731 timeout = ATAPI_WAIT_PC;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100732 if (!blk_fs_request(rq))
Borislav Petkov4cad0852009-01-02 16:12:53 +0100733 expiry = ide_cd_expiry;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100734 }
735
Bartlomiej Zolnierkiewicz60c0cd02009-03-27 12:46:46 +0100736 hwif->expiry = expiry;
737 ide_set_handler(drive, cdrom_newpc_intr, timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738 return ide_started;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100739
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200740out_end:
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200741 if (blk_pc_request(rq) && rc == 0) {
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +0100742 unsigned int dlen = rq->data_len;
743
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200744 rq->data_len = 0;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100745
Bartlomiej Zolnierkiewicz3c8a2cc2008-12-29 20:27:31 +0100746 if (blk_end_request(rq, 0, dlen))
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100747 BUG();
Bartlomiej Zolnierkiewicz1d0bf582008-12-29 20:27:30 +0100748
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100749 hwif->rq = NULL;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100750 } else {
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200751 if (sense && uptodate)
752 ide_cd_complete_failed_rq(drive, rq);
753
754 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200755 if (cmd->nleft == 0)
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200756 uptodate = 1;
757 } else {
758 if (uptodate <= 0 && rq->errors == 0)
759 rq->errors = -EIO;
760 }
761
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200762 if (uptodate == 0)
763 ide_cd_error_cmd(drive, cmd);
764
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200765 /* make sure it's fully ended */
766 if (blk_pc_request(rq))
767 nsectors = (rq->data_len + 511) >> 9;
768 else
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200769 nsectors = rq->hard_nr_sectors;
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200770
771 if (nsectors == 0)
772 nsectors = 1;
773
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200774 if (blk_fs_request(rq) == 0) {
775 rq->data_len -= (cmd->nbytes - cmd->nleft);
776 if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
777 rq->data_len += cmd->last_xfer_len;
778 }
779
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200780 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
781
Bartlomiej Zolnierkiewicz8a116972009-03-31 20:15:03 +0200782 if (sense && rc == 2)
783 ide_error(drive, "request sense failure", stat);
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100784 }
785 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786}
787
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100788static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789{
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100790 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200791 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100792 int write = rq_data_dir(rq) == WRITE;
793 unsigned short sectors_per_frame =
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200794 queue_hardsect_size(q) >> SECTOR_BITS;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100795
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200796 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
Borislav Petkov088b1b82009-01-02 13:34:47 +0100797 "secs_per_frame: %u",
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200798 rq->cmd[0], rq->cmd_flags, sectors_per_frame);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200799
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100800 if (write) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200801 /* disk has become write protected */
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200802 if (get_disk_ro(cd->disk))
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100803 return ide_stopped;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100804 } else {
805 /*
806 * We may be retrying this request after an error. Fix up any
807 * weirdness which might be present in the request packet.
808 */
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200809 q->prep_rq_fn(q, rq);
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100810 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200812 /* fs requests *must* be hardware frame aligned */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200814 (rq->sector & (sectors_per_frame - 1)))
815 return ide_stopped;
816
817 /* use DMA, if possible */
818 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100820 if (write)
821 cd->devinfo.media_written = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200823 rq->timeout = ATAPI_WAIT_PC;
824
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200825 return ide_started;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826}
827
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200828static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
Borislav Petkov088b1b82009-01-02 13:34:47 +0100831 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
832 rq->cmd[0], rq->cmd_type);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200833
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +0100834 if (blk_pc_request(rq))
835 rq->cmd_flags |= REQ_QUIET;
836 else
837 rq->cmd_flags &= ~REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
Borislav Petkov12469ac2008-10-13 21:39:49 +0200839 drive->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200841 /* sg request */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200842 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
843 struct request_queue *q = drive->queue;
844 unsigned int alignment;
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200845 char *buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200847 if (rq->bio)
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200848 buf = bio_data(rq->bio);
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200849 else
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200850 buf = rq->data;
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200851
Borislav Petkov12469ac2008-10-13 21:39:49 +0200852 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853
854 /*
855 * check if dma is safe
Linus Torvalds5d9e4ea2005-05-27 07:36:17 -0700856 *
857 * NOTE! The "len" and "addr" checks should possibly have
858 * separate masks.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859 */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +0200860 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
Borislav Petkov9bd27cb2008-11-02 21:40:07 +0100861 if ((unsigned long)buf & alignment
862 || rq->data_len & q->dma_pad_mask
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +0200863 || object_is_on_stack(buf))
Borislav Petkov12469ac2008-10-13 21:39:49 +0200864 drive->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866}
867
Borislav Petkov99384ae2008-07-16 20:33:45 +0200868static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
Borislav Petkove5e076a2008-04-26 22:25:15 +0200869 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870{
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100871 struct ide_cmd cmd;
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200872 int uptodate = 0, nsectors;
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100873
Borislav Petkov088b1b82009-01-02 13:34:47 +0100874 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
875 rq->cmd[0], (unsigned long long)block);
876
877 if (drive->debug_mask & IDE_DBG_RQ)
878 blk_dump_rq_flags(rq, "ide_cd_do_request");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200879
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicz8652b312009-03-31 20:15:14 +0200881 if (cdrom_start_rw(drive, rq) == ide_stopped)
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200882 goto out_end;
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +0100883 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
Jens Axboecea28852006-10-12 15:08:45 +0200884 rq->cmd_type == REQ_TYPE_ATA_PC) {
Borislav Petkov7fcebda2008-07-16 20:33:46 +0200885 if (!rq->timeout)
886 rq->timeout = ATAPI_WAIT_PC;
887
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200888 cdrom_do_block_pc(drive, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +0200889 } else if (blk_special_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200890 /* right now this can only be a reset... */
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200891 uptodate = 1;
892 goto out_end;
Borislav Petkovab9d6e32008-07-16 20:33:45 +0200893 } else {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200894 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
Bartlomiej Zolnierkiewicz5ed57ad2009-03-31 20:15:05 +0200895 if (rq->errors == 0)
896 rq->errors = -EIO;
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200897 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 }
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200899
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100900 memset(&cmd, 0, sizeof(cmd));
901
902 if (rq_data_dir(rq))
903 cmd.tf_flags |= IDE_TFLAG_WRITE;
904
905 cmd.rq = rq;
906
Bartlomiej Zolnierkiewiczc7ec8992009-03-31 20:15:15 +0200907 if (blk_fs_request(rq) || rq->data_len) {
908 ide_init_sg_cmd(&cmd, blk_fs_request(rq) ? (rq->nr_sectors << 9)
909 : rq->data_len);
Bartlomiej Zolnierkiewicza08915b2009-03-31 20:15:13 +0200910 ide_map_sg(drive, &cmd);
911 }
912
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100913 return ide_issue_pc(drive, &cmd);
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200914out_end:
Bartlomiej Zolnierkiewiczc4c69e22009-03-31 20:15:04 +0200915 nsectors = rq->hard_nr_sectors;
Bartlomiej Zolnierkiewiczf63174e2009-03-31 20:15:04 +0200916
917 if (nsectors == 0)
918 nsectors = 1;
919
920 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
921
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200922 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923}
924
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200925/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 * Ioctl handling.
927 *
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200928 * Routines which queue packet commands take as a final argument a pointer to a
929 * request_sense struct. If execution of the command results in an error with a
930 * CHECK CONDITION status, this structure will be filled with the results of the
931 * subsequent request sense command. The pointer can also be NULL, in which case
932 * no sense information is returned.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933 */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200934static void msf_from_bcd(struct atapi_msf *msf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935{
Adrian Bunkfc99856a2008-08-18 21:40:04 +0200936 msf->minute = bcd2bin(msf->minute);
937 msf->second = bcd2bin(msf->second);
938 msf->frame = bcd2bin(msf->frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939}
940
Borislav Petkovf9afd182008-02-01 23:09:29 +0100941int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 struct cdrom_info *info = drive->driver_data;
944 struct cdrom_device_info *cdi = &info->devinfo;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200945 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946
Borislav Petkov088b1b82009-01-02 13:34:47 +0100947 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200948
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200949 memset(cmd, 0, BLK_MAX_CDB);
950 cmd[0] = GPCMD_TEST_UNIT_READY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +0100952 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200953 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
954 * instead of supporting the LOAD_UNLOAD opcode.
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +0100955 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200956 cmd[7] = cdi->sanyo_slot % 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957
Harvey Harrison141d3b22008-07-23 19:56:02 +0200958 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959}
960
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
962 unsigned long *sectors_per_frame,
963 struct request_sense *sense)
964{
965 struct {
Harvey Harrison141d3b22008-07-23 19:56:02 +0200966 __be32 lba;
967 __be32 blocklen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968 } capbuf;
969
970 int stat;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200971 unsigned char cmd[BLK_MAX_CDB];
972 unsigned len = sizeof(capbuf);
Petr Tesarik938bb032008-08-05 18:17:02 +0200973 u32 blocklen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974
Borislav Petkov088b1b82009-01-02 13:34:47 +0100975 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200976
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200977 memset(cmd, 0, BLK_MAX_CDB);
978 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200980 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
981 REQ_QUIET);
Jens Axboee8e7b9e2008-07-24 22:53:35 +0200982 if (stat)
983 return stat;
984
985 /*
986 * Sanity check the given block size
987 */
Petr Tesarik938bb032008-08-05 18:17:02 +0200988 blocklen = be32_to_cpu(capbuf.blocklen);
989 switch (blocklen) {
990 case 512:
991 case 1024:
992 case 2048:
993 case 4096:
Jens Axboee8e7b9e2008-07-24 22:53:35 +0200994 break;
995 default:
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200996 printk(KERN_ERR PFX "%s: weird block size %u\n",
997 drive->name, blocklen);
998 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
999 drive->name);
Petr Tesarik938bb032008-08-05 18:17:02 +02001000 blocklen = 2048;
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001001 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 }
1003
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001004 *capacity = 1 + be32_to_cpu(capbuf.lba);
Petr Tesarik938bb032008-08-05 18:17:02 +02001005 *sectors_per_frame = blocklen >> SECTOR_BITS;
Borislav Petkov71b429ca2008-10-17 18:09:14 +02001006
Borislav Petkov088b1b82009-01-02 13:34:47 +01001007 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
1008 *capacity, *sectors_per_frame);
Borislav Petkov71b429ca2008-10-17 18:09:14 +02001009
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001010 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011}
1012
1013static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1014 int format, char *buf, int buflen,
1015 struct request_sense *sense)
1016{
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001017 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018
Borislav Petkov088b1b82009-01-02 13:34:47 +01001019 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001020
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001021 memset(cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001023 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1024 cmd[6] = trackno;
1025 cmd[7] = (buflen >> 8);
1026 cmd[8] = (buflen & 0xff);
1027 cmd[9] = (format << 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028
1029 if (msf_flag)
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001030 cmd[1] = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001032 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033}
1034
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035/* Try to read the entire TOC for the disk into our internal buffer. */
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001036int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037{
1038 int stat, ntracks, i;
1039 struct cdrom_info *info = drive->driver_data;
1040 struct cdrom_device_info *cdi = &info->devinfo;
1041 struct atapi_toc *toc = info->toc;
1042 struct {
1043 struct atapi_toc_header hdr;
1044 struct atapi_toc_entry ent;
1045 } ms_tmp;
1046 long last_written;
1047 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1048
Borislav Petkov088b1b82009-01-02 13:34:47 +01001049 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001050
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 if (toc == NULL) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001052 /* try to allocate space */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001053 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 if (toc == NULL) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001055 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001056 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 return -ENOMEM;
1058 }
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001059 info->toc = toc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 }
1061
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001062 /*
1063 * Check to see if the existing data is still valid. If it is,
1064 * just return.
1065 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066 (void) cdrom_check_status(drive, sense);
1067
Borislav Petkov570f89e2008-07-23 19:56:02 +02001068 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069 return 0;
1070
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001071 /* try to get the total cdrom capacity and sector size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072 stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
1073 sense);
1074 if (stat)
1075 toc->capacity = 0x1fffff;
1076
1077 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001078 /* save a private copy of the TOC capacity for error handling */
Alan Coxdbe217a2006-06-25 05:47:44 -07001079 drive->probed_capacity = toc->capacity * sectors_per_frame;
1080
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 blk_queue_hardsect_size(drive->queue,
1082 sectors_per_frame << SECTOR_BITS);
1083
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001084 /* first read just the header, so we know how long the TOC is */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1086 sizeof(struct atapi_toc_header), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001087 if (stat)
1088 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089
Borislav Petkov570f89e2008-07-23 19:56:02 +02001090 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001091 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1092 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094
1095 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1096 if (ntracks <= 0)
1097 return -EIO;
1098 if (ntracks > MAX_TRACKS)
1099 ntracks = MAX_TRACKS;
1100
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001101 /* now read the whole schmeer */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1103 (char *)&toc->hdr,
1104 sizeof(struct atapi_toc_header) +
1105 (ntracks + 1) *
1106 sizeof(struct atapi_toc_entry), sense);
1107
1108 if (stat && toc->hdr.first_track > 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001109 /*
1110 * Cds with CDI tracks only don't have any TOC entries, despite
1111 * of this the returned values are
1112 * first_track == last_track = number of CDI tracks + 1,
1113 * so that this case is indistinguishable from the same layout
1114 * plus an additional audio track. If we get an error for the
1115 * regular case, we assume a CDI without additional audio
1116 * tracks. In this case the readable TOC is empty (CDI tracks
1117 * are not included) and only holds the Leadout entry.
1118 *
1119 * Heiko Eißfeldt.
1120 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 ntracks = 0;
1122 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1123 (char *)&toc->hdr,
1124 sizeof(struct atapi_toc_header) +
1125 (ntracks + 1) *
1126 sizeof(struct atapi_toc_entry),
1127 sense);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001128 if (stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 return stat;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001130
Borislav Petkov570f89e2008-07-23 19:56:02 +02001131 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001132 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1133 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001134 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 toc->hdr.first_track = CDROM_LEADOUT;
1136 toc->hdr.last_track = CDROM_LEADOUT;
1137 }
1138 }
1139
1140 if (stat)
1141 return stat;
1142
Borislav Petkov7eb43fd2008-02-11 00:32:13 +01001143 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144
Borislav Petkov570f89e2008-07-23 19:56:02 +02001145 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001146 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1147 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001150 for (i = 0; i <= ntracks; i++) {
Borislav Petkov570f89e2008-07-23 19:56:02 +02001151 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1152 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001153 toc->ent[i].track = bcd2bin(toc->ent[i].track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 msf_from_bcd(&toc->ent[i].addr.msf);
1155 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001156 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1157 toc->ent[i].addr.msf.second,
1158 toc->ent[i].addr.msf.frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159 }
1160
Linus Torvalds1da177e2005-04-16 15:20:36 -07001161 if (toc->hdr.first_track != CDROM_LEADOUT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001162 /* read the multisession information */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1164 sizeof(ms_tmp), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001165 if (stat)
1166 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167
1168 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1169 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +02001170 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1171 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1173 }
1174
Borislav Petkov570f89e2008-07-23 19:56:02 +02001175 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001176 /* re-read multisession information using MSF format */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1178 sizeof(ms_tmp), sense);
1179 if (stat)
1180 return stat;
1181
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001182 msf_from_bcd(&ms_tmp.ent.addr.msf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001183 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001184 ms_tmp.ent.addr.msf.second,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185 ms_tmp.ent.addr.msf.frame);
1186 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187
1188 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1189
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001190 /* now try to get the total cdrom capacity */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191 stat = cdrom_get_last_written(cdi, &last_written);
1192 if (!stat && (last_written > toc->capacity)) {
1193 toc->capacity = last_written;
1194 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Alan Coxdbe217a2006-06-25 05:47:44 -07001195 drive->probed_capacity = toc->capacity * sectors_per_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 }
1197
1198 /* Remember that we've read this stuff. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001199 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200
1201 return 0;
1202}
1203
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001204int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001205{
1206 struct cdrom_info *info = drive->driver_data;
1207 struct cdrom_device_info *cdi = &info->devinfo;
1208 struct packet_command cgc;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001209 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001210
Borislav Petkov088b1b82009-01-02 13:34:47 +01001211 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001212
Borislav Petkov570f89e2008-07-23 19:56:02 +02001213 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001214 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001215
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001216 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001217 do {
1218 /* we seem to get stat=0x01,err=0x00 the first time (??) */
Eric Piel9235e682005-06-23 00:10:29 -07001219 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1220 if (!stat)
1221 break;
1222 } while (--attempts);
1223 return stat;
1224}
1225
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001226void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001227{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001228 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001229 u16 curspeed, maxspeed;
1230
Borislav Petkov088b1b82009-01-02 13:34:47 +01001231 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001232
Borislav Petkov570f89e2008-07-23 19:56:02 +02001233 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
Harvey Harrison141d3b22008-07-23 19:56:02 +02001234 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1235 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
Eric Piel9235e682005-06-23 00:10:29 -07001236 } else {
Harvey Harrison141d3b22008-07-23 19:56:02 +02001237 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1238 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
Eric Piel9235e682005-06-23 00:10:29 -07001239 }
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001240
Borislav Petkov088b1b82009-01-02 13:34:47 +01001241 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1242 curspeed, maxspeed);
Borislav Petkov71b429ca2008-10-17 18:09:14 +02001243
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001244 cd->current_speed = (curspeed + (176/2)) / 176;
1245 cd->max_speed = (maxspeed + (176/2)) / 176;
Eric Piel9235e682005-06-23 00:10:29 -07001246}
1247
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001248#define IDE_CD_CAPABILITIES \
1249 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1250 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1251 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1252 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1253 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255static struct cdrom_device_ops ide_cdrom_dops = {
1256 .open = ide_cdrom_open_real,
1257 .release = ide_cdrom_release_real,
1258 .drive_status = ide_cdrom_drive_status,
1259 .media_changed = ide_cdrom_check_media_change_real,
1260 .tray_move = ide_cdrom_tray_move,
1261 .lock_door = ide_cdrom_lock_door,
1262 .select_speed = ide_cdrom_select_speed,
1263 .get_last_session = ide_cdrom_get_last_session,
1264 .get_mcn = ide_cdrom_get_mcn,
1265 .reset = ide_cdrom_reset,
1266 .audio_ioctl = ide_cdrom_audio_ioctl,
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001267 .capability = IDE_CD_CAPABILITIES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 .generic_packet = ide_cdrom_packet,
1269};
1270
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001271static int ide_cdrom_register(ide_drive_t *drive, int nslots)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272{
1273 struct cdrom_info *info = drive->driver_data;
1274 struct cdrom_device_info *devinfo = &info->devinfo;
1275
Borislav Petkov088b1b82009-01-02 13:34:47 +01001276 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001277
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 devinfo->ops = &ide_cdrom_dops;
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001279 devinfo->speed = info->current_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280 devinfo->capacity = nslots;
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001281 devinfo->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282 strcpy(devinfo->name, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283
Borislav Petkov570f89e2008-07-23 19:56:02 +02001284 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
Bartlomiej Zolnierkiewicz3cbd8142007-12-24 15:23:43 +01001285 devinfo->mask |= CDC_SELECT_SPEED;
1286
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287 devinfo->disk = info->disk;
1288 return register_cdrom(devinfo);
1289}
1290
Borislav Petkove5e076a2008-04-26 22:25:15 +02001291static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001293 struct cdrom_info *cd = drive->driver_data;
1294 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001295 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1296 mechtype_t mechtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 int nslots = 1;
1298
Borislav Petkov088b1b82009-01-02 13:34:47 +01001299 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1300 drive->media, drive->atapi_flags);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001301
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001302 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1303 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1304 CDC_MO_DRIVE | CDC_RAM);
1305
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306 if (drive->media == ide_optical) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001307 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001308 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001309 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310 return nslots;
1311 }
1312
Borislav Petkov570f89e2008-07-23 19:56:02 +02001313 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1314 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001315 cdi->mask &= ~CDC_PLAY_AUDIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 return nslots;
1317 }
1318
1319 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001320 * We have to cheat a little here. the packet will eventually be queued
1321 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1322 * Since this device hasn't been registered with the Uniform layer yet,
1323 * it can't do this. Same goes for cdi->ops.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001325 cdi->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 cdi->ops = &ide_cdrom_dops;
1327
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001328 if (ide_cdrom_get_capabilities(drive, buf))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329 return 0;
1330
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001331 if ((buf[8 + 6] & 0x01) == 0)
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +02001332 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001333 if (buf[8 + 6] & 0x08)
Borislav Petkov570f89e2008-07-23 19:56:02 +02001334 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001335 if (buf[8 + 3] & 0x01)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001336 cdi->mask &= ~CDC_CD_R;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001337 if (buf[8 + 3] & 0x02)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001338 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001339 if (buf[8 + 2] & 0x38)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001340 cdi->mask &= ~CDC_DVD;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001341 if (buf[8 + 3] & 0x20)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001342 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001343 if (buf[8 + 3] & 0x10)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001344 cdi->mask &= ~CDC_DVD_R;
Borislav Petkov570f89e2008-07-23 19:56:02 +02001345 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001346 cdi->mask &= ~CDC_PLAY_AUDIO;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001347
1348 mechtype = buf[8 + 6] >> 5;
Borislav Petkovf20f2582008-10-05 18:23:27 +02001349 if (mechtype == mechtype_caddy ||
1350 mechtype == mechtype_popup ||
1351 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001352 cdi->mask |= CDC_CLOSE_TRAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354 if (cdi->sanyo_slot > 0) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001355 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 nslots = 3;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001357 } else if (mechtype == mechtype_individual_changer ||
1358 mechtype == mechtype_cartridge_changer) {
Bartlomiej Zolnierkiewicz2609d062008-02-01 23:09:19 +01001359 nslots = cdrom_number_of_slots(cdi);
1360 if (nslots > 1)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001361 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 }
1363
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001364 ide_cdrom_update_speed(drive, buf);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001365
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001366 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001367
1368 /* don't print speed if the drive reported 0 */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001369 if (cd->max_speed)
1370 printk(KERN_CONT " %dX", cd->max_speed);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001371
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001372 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001374 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1375 printk(KERN_CONT " DVD%s%s",
1376 (cdi->mask & CDC_DVD_R) ? "" : "-R",
Borislav Petkov419a5b62008-10-17 18:09:14 +02001377 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001379 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1380 printk(KERN_CONT " CD%s%s",
1381 (cdi->mask & CDC_CD_R) ? "" : "-R",
1382 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001384 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1385 printk(KERN_CONT " changer w/%d slots", nslots);
1386 else
1387 printk(KERN_CONT " drive");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001388
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001389 printk(KERN_CONT ", %dkB Cache\n",
1390 be16_to_cpup((__be16 *)&buf[8 + 12]));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391
1392 return nslots;
1393}
1394
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001395/* standard prep_rq_fn that builds 10 byte cmds */
Jens Axboe165125e2007-07-24 09:28:11 +02001396static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397{
1398 int hard_sect = queue_hardsect_size(q);
1399 long block = (long)rq->hard_sector / (hard_sect >> 9);
1400 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1401
FUJITA Tomonorid34c87e2008-04-29 14:37:52 +02001402 memset(rq->cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403
1404 if (rq_data_dir(rq) == READ)
1405 rq->cmd[0] = GPCMD_READ_10;
1406 else
1407 rq->cmd[0] = GPCMD_WRITE_10;
1408
1409 /*
1410 * fill in lba
1411 */
1412 rq->cmd[2] = (block >> 24) & 0xff;
1413 rq->cmd[3] = (block >> 16) & 0xff;
1414 rq->cmd[4] = (block >> 8) & 0xff;
1415 rq->cmd[5] = block & 0xff;
1416
1417 /*
1418 * and transfer length
1419 */
1420 rq->cmd[7] = (blocks >> 8) & 0xff;
1421 rq->cmd[8] = blocks & 0xff;
1422 rq->cmd_len = 10;
1423 return BLKPREP_OK;
1424}
1425
1426/*
1427 * Most of the SCSI commands are supported directly by ATAPI devices.
1428 * This transform handles the few exceptions.
1429 */
1430static int ide_cdrom_prep_pc(struct request *rq)
1431{
1432 u8 *c = rq->cmd;
1433
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001434 /* transform 6-byte read/write commands to the 10-byte version */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435 if (c[0] == READ_6 || c[0] == WRITE_6) {
1436 c[8] = c[4];
1437 c[5] = c[3];
1438 c[4] = c[2];
1439 c[3] = c[1] & 0x1f;
1440 c[2] = 0;
1441 c[1] &= 0xe0;
1442 c[0] += (READ_10 - READ_6);
1443 rq->cmd_len = 10;
1444 return BLKPREP_OK;
1445 }
1446
1447 /*
1448 * it's silly to pretend we understand 6-byte sense commands, just
1449 * reject with ILLEGAL_REQUEST and the caller should take the
1450 * appropriate action
1451 */
1452 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1453 rq->errors = ILLEGAL_REQUEST;
1454 return BLKPREP_KILL;
1455 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001456
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 return BLKPREP_OK;
1458}
1459
Jens Axboe165125e2007-07-24 09:28:11 +02001460static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461{
Jens Axboe4aff5e22006-08-10 08:44:47 +02001462 if (blk_fs_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463 return ide_cdrom_prep_fs(q, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001464 else if (blk_pc_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465 return ide_cdrom_prep_pc(rq);
1466
1467 return 0;
1468}
1469
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001470struct cd_list_entry {
1471 const char *id_model;
1472 const char *id_firmware;
1473 unsigned int cd_flags;
1474};
1475
Borislav Petkov5e657a92008-04-26 22:25:15 +02001476#ifdef CONFIG_IDE_PROC_FS
1477static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1478{
1479 unsigned long capacity, sectors_per_frame;
1480
1481 if (cdrom_read_capacity(drive, &capacity, &sectors_per_frame, NULL))
1482 return 0;
1483
1484 return capacity * sectors_per_frame;
1485}
1486
Borislav Petkove5e076a2008-04-26 22:25:15 +02001487static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1488 int count, int *eof, void *data)
Borislav Petkov5e657a92008-04-26 22:25:15 +02001489{
1490 ide_drive_t *drive = data;
1491 int len;
1492
1493 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1494 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1495}
1496
1497static ide_proc_entry_t idecd_proc[] = {
1498 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1499 { NULL, 0, NULL, NULL }
1500};
1501
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001502static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1503{
1504 return idecd_proc;
1505}
1506
1507static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1508{
Bartlomiej Zolnierkiewicz519d6802008-12-29 20:27:38 +01001509 return NULL;
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001510}
Borislav Petkov5e657a92008-04-26 22:25:15 +02001511#endif
1512
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001513static const struct cd_list_entry ide_cd_quirks_list[] = {
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001514 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001515 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001516 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001517 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1518 IDE_AFLAG_PRE_ATAPI12, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001519 /* Vertos 300, some versions of this drive like to talk BCD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001520 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001521 /* Vertos 600 ESD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001522 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001523 /*
1524 * Sanyo 3 CD changer uses a non-standard command for CD changing
1525 * (by default standard ATAPI support for CD changers is used).
1526 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001527 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1528 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1529 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001530 /* Stingray 8X CD-ROM. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001531 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001532 /*
1533 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1534 * mode sense page capabilities size, but older drives break.
1535 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001536 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1537 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001538 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001539 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001540 /*
1541 * Some drives used by Apple don't advertise audio play
1542 * but they do support reading TOC & audio datas.
1543 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001544 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1545 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1546 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1547 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1548 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
Bodo Eggertf3e85ee2008-10-05 18:23:28 +02001549 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
Borislav Petkovf20f2582008-10-05 18:23:27 +02001550 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
Márton Németh64c2eae2008-10-23 23:22:09 +02001551 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001552 { NULL, NULL, 0 }
1553};
1554
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001555static unsigned int ide_cd_flags(u16 *id)
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001556{
1557 const struct cd_list_entry *cle = ide_cd_quirks_list;
1558
1559 while (cle->id_model) {
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001560 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001561 (cle->id_firmware == NULL ||
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001562 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001563 return cle->cd_flags;
1564 cle++;
1565 }
1566
1567 return 0;
1568}
1569
Borislav Petkove5e076a2008-04-26 22:25:15 +02001570static int ide_cdrom_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001572 struct cdrom_info *cd = drive->driver_data;
1573 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicze698ea82009-03-31 20:15:16 +02001574 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001575 u16 *id = drive->id;
1576 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577 int nslots;
1578
Borislav Petkov088b1b82009-01-02 13:34:47 +01001579 ide_debug_log(IDE_DBG_PROBE, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001580
Bartlomiej Zolnierkiewicze698ea82009-03-31 20:15:16 +02001581 blk_queue_prep_rq(q, ide_cdrom_prep_fn);
1582 blk_queue_dma_alignment(q, 31);
1583 blk_queue_update_dma_pad(q, 15);
1584
1585 q->unplug_delay = max((1 * HZ) / 1000, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586
Bartlomiej Zolnierkiewiczfe11edf2008-10-17 18:09:11 +02001587 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1588 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589
Borislav Petkov570f89e2008-07-23 19:56:02 +02001590 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001591 fw_rev[4] == '1' && fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001592 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1593 IDE_AFLAG_TOCADDR_AS_BCD);
1594 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001595 fw_rev[4] == '1' && fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001596 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1597 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001598 /* 3 => use CD in slot 0 */
1599 cdi->sanyo_slot = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001601 nslots = ide_cdrom_probe_capabilities(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001602
Bartlomiej Zolnierkiewicze698ea82009-03-31 20:15:16 +02001603 blk_queue_hardsect_size(q, CD_FRAMESIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001604
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605 if (ide_cdrom_register(drive, nslots)) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001606 printk(KERN_ERR PFX "%s: %s failed to register device with the"
Borislav Petkov83c85652008-04-26 22:25:15 +02001607 " cdrom driver.\n", drive->name, __func__);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001608 cd->devinfo.handle = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 return 1;
1610 }
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +02001611
1612 ide_proc_register_driver(drive, cd->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001613 return 0;
1614}
1615
Russell King4031bbe2006-01-06 11:41:00 +00001616static void ide_cd_remove(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617{
1618 struct cdrom_info *info = drive->driver_data;
1619
Borislav Petkov088b1b82009-01-02 13:34:47 +01001620 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001621
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001622 ide_proc_unregister_driver(drive, info->driver);
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001623 device_del(&info->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624 del_gendisk(info->disk);
1625
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001626 mutex_lock(&idecd_ref_mutex);
1627 put_device(&info->dev);
1628 mutex_unlock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629}
1630
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001631static void ide_cd_release(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001632{
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001633 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001634 struct cdrom_device_info *devinfo = &info->devinfo;
1635 ide_drive_t *drive = info->drive;
1636 struct gendisk *g = info->disk;
1637
Borislav Petkov088b1b82009-01-02 13:34:47 +01001638 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001639
Jesper Juhl6044ec82005-11-07 01:01:32 -08001640 kfree(info->toc);
Akinobu Mita0a0c4112008-03-26 12:09:02 +01001641 if (devinfo->handle == drive)
1642 unregister_cdrom(devinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001643 drive->driver_data = NULL;
1644 blk_queue_prep_rq(drive->queue, NULL);
1645 g->private_data = NULL;
1646 put_disk(g);
1647 kfree(info);
1648}
1649
Russell King4031bbe2006-01-06 11:41:00 +00001650static int ide_cd_probe(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001652static struct ide_driver ide_cdrom_driver = {
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001653 .gen_driver = {
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001654 .owner = THIS_MODULE,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001655 .name = "ide-cdrom",
1656 .bus = &ide_bus_type,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001657 },
Russell King4031bbe2006-01-06 11:41:00 +00001658 .probe = ide_cd_probe,
1659 .remove = ide_cd_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001660 .version = IDECD_VERSION,
Borislav Petkov99384ae2008-07-16 20:33:45 +02001661 .do_request = ide_cd_do_request,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001662#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001663 .proc_entries = ide_cd_proc_entries,
1664 .proc_devsets = ide_cd_proc_devsets,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001665#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001666};
1667
Al Viro488ca602008-03-02 10:26:23 -05001668static int idecd_open(struct block_device *bdev, fmode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001669{
Al Viro488ca602008-03-02 10:26:23 -05001670 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001671 int rc = -ENOMEM;
1672
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001673 if (!info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674 return -ENXIO;
1675
Al Viro488ca602008-03-02 10:26:23 -05001676 rc = cdrom_open(&info->devinfo, bdev, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001677
1678 if (rc < 0)
1679 ide_cd_put(info);
1680
1681 return rc;
1682}
1683
Al Viro488ca602008-03-02 10:26:23 -05001684static int idecd_release(struct gendisk *disk, fmode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001686 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001687
Al Viro488ca602008-03-02 10:26:23 -05001688 cdrom_release(&info->devinfo, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001689
1690 ide_cd_put(info);
1691
1692 return 0;
1693}
1694
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001695static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1696{
1697 struct packet_command cgc;
1698 char buffer[16];
1699 int stat;
1700 char spindown;
1701
1702 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1703 return -EFAULT;
1704
1705 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1706
1707 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1708 if (stat)
1709 return stat;
1710
1711 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1712 return cdrom_mode_select(cdi, &cgc);
1713}
1714
1715static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1716{
1717 struct packet_command cgc;
1718 char buffer[16];
1719 int stat;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001720 char spindown;
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001721
1722 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1723
1724 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1725 if (stat)
1726 return stat;
1727
1728 spindown = buffer[11] & 0x0f;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001729 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001730 return -EFAULT;
1731 return 0;
1732}
1733
Al Viro488ca602008-03-02 10:26:23 -05001734static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735 unsigned int cmd, unsigned long arg)
1736{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001737 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738 int err;
1739
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001740 switch (cmd) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001741 case CDROMSETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001742 return idecd_set_spindown(&info->devinfo, arg);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001743 case CDROMGETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001744 return idecd_get_spindown(&info->devinfo, arg);
1745 default:
1746 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001747 }
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001748
Al Viro1bddd9e2008-09-02 17:19:43 -04001749 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750 if (err == -EINVAL)
Al Viro488ca602008-03-02 10:26:23 -05001751 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752
1753 return err;
1754}
1755
1756static int idecd_media_changed(struct gendisk *disk)
1757{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001758 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759 return cdrom_media_changed(&info->devinfo);
1760}
1761
1762static int idecd_revalidate_disk(struct gendisk *disk)
1763{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001764 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001765 struct request_sense sense;
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001766
1767 ide_cd_read_toc(info->drive, &sense);
1768
Linus Torvalds1da177e2005-04-16 15:20:36 -07001769 return 0;
1770}
1771
1772static struct block_device_operations idecd_ops = {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001773 .owner = THIS_MODULE,
Al Viro488ca602008-03-02 10:26:23 -05001774 .open = idecd_open,
1775 .release = idecd_release,
1776 .locked_ioctl = idecd_ioctl,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001777 .media_changed = idecd_media_changed,
1778 .revalidate_disk = idecd_revalidate_disk
Linus Torvalds1da177e2005-04-16 15:20:36 -07001779};
1780
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001781/* module options */
Borislav Petkov35d9b172008-10-13 21:39:49 +02001782static unsigned long debug_mask;
1783module_param(debug_mask, ulong, 0644);
1784
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1786
Russell King4031bbe2006-01-06 11:41:00 +00001787static int ide_cd_probe(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788{
1789 struct cdrom_info *info;
1790 struct gendisk *g;
1791 struct request_sense sense;
1792
Borislav Petkov088b1b82009-01-02 13:34:47 +01001793 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1794 drive->driver_req, drive->media);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001795
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796 if (!strstr("ide-cdrom", drive->driver_req))
1797 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001798
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799 if (drive->media != ide_cdrom && drive->media != ide_optical)
1800 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001801
Borislav Petkov35d9b172008-10-13 21:39:49 +02001802 drive->debug_mask = debug_mask;
Borislav Petkovd6251d42009-01-06 17:20:58 +01001803 drive->irq_handler = cdrom_newpc_intr;
Borislav Petkov35d9b172008-10-13 21:39:49 +02001804
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -08001805 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 if (info == NULL) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001807 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001808 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001809 goto failed;
1810 }
1811
1812 g = alloc_disk(1 << PARTN_BITS);
1813 if (!g)
1814 goto out_free_cd;
1815
1816 ide_init_disk(g, drive);
1817
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001818 info->dev.parent = &drive->gendev;
1819 info->dev.release = ide_cd_release;
1820 dev_set_name(&info->dev, dev_name(&drive->gendev));
1821
1822 if (device_register(&info->dev))
1823 goto out_free_disk;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824
1825 info->drive = drive;
1826 info->driver = &ide_cdrom_driver;
1827 info->disk = g;
1828
1829 g->private_data = &info->driver;
1830
1831 drive->driver_data = info;
1832
Linus Torvalds1da177e2005-04-16 15:20:36 -07001833 g->minors = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834 g->driverfs_dev = &drive->gendev;
1835 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
1836 if (ide_cdrom_setup(drive)) {
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001837 put_device(&info->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001838 goto failed;
1839 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001841 ide_cd_read_toc(drive, &sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001842 g->fops = &idecd_ops;
1843 g->flags |= GENHD_FL_REMOVABLE;
1844 add_disk(g);
1845 return 0;
1846
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001847out_free_disk:
1848 put_disk(g);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849out_free_cd:
1850 kfree(info);
1851failed:
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001852 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853}
1854
1855static void __exit ide_cdrom_exit(void)
1856{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001857 driver_unregister(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858}
Bartlomiej Zolnierkiewicz17514e82005-11-19 22:24:35 +01001859
1860static int __init ide_cdrom_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861{
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001862 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001863 return driver_register(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001864}
1865
Kay Sievers263756e2005-12-12 18:03:44 +01001866MODULE_ALIAS("ide:*m-cdrom*");
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +01001867MODULE_ALIAS("ide-cd");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001868module_init(ide_cdrom_init);
1869module_exit(ide_cdrom_exit);
1870MODULE_LICENSE("GPL");