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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>
7 * Copyright (C) 2005, 2007 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
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200268static void cdrom_end_request(ide_drive_t *drive, int uptodate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269{
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100270 struct request *rq = drive->hwif->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 int nsectors = rq->hard_cur_sectors;
272
Borislav Petkov088b1b82009-01-02 13:34:47 +0100273 ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, uptodate: 0x%x, nsectors: %d",
274 rq->cmd[0], uptodate, nsectors);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200275
Bartlomiej Zolnierkiewicz299c4852009-03-31 20:15:01 +0200276 if (blk_sense_request(rq) && uptodate)
277 ide_cd_complete_failed_rq(drive, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
279 if (!rq->current_nr_sectors && blk_fs_request(rq))
280 uptodate = 1;
281 /* make sure it's fully ended */
282 if (blk_pc_request(rq))
283 nsectors = (rq->data_len + 511) >> 9;
284 if (!nsectors)
285 nsectors = 1;
286
Borislav Petkov088b1b82009-01-02 13:34:47 +0100287 ide_debug_log(IDE_DBG_FUNC, "uptodate: 0x%x, nsectors: %d",
288 uptodate, nsectors);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200289
Bartlomiej Zolnierkiewicz89f78b32009-03-27 12:46:43 +0100290 if (blk_fs_request(rq) == 0 && uptodate <= 0 && rq->errors == 0)
291 rq->errors = -EIO;
292
Bartlomiej Zolnierkiewicz130e8862009-03-27 12:46:45 +0100293 ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294}
295
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200296/*
297 * Returns:
298 * 0: if the request should be continued.
299 * 1: if the request was ended.
300 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
302{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200303 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100304 struct request *rq = hwif->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 int stat, err, sense_key;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200306
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200307 /* check for errors */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200308 stat = hwif->tp_ops->read_status(hwif);
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +0100309
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 if (stat_ret)
311 *stat_ret = stat;
312
313 if (OK_STAT(stat, good_stat, BAD_R_STAT))
314 return 0;
315
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200316 /* get the IDE error register */
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +0100317 err = ide_read_error(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 sense_key = err >> 4;
319
Borislav Petkov088b1b82009-01-02 13:34:47 +0100320 ide_debug_log(IDE_DBG_RQ, "stat: 0x%x, good_stat: 0x%x, cmd[0]: 0x%x, "
321 "rq->cmd_type: 0x%x, err: 0x%x",
322 stat, good_stat, rq->cmd[0], rq->cmd_type,
323 err);
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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 cdrom_end_request(drive, 0);
333 ide_error(drive, "request sense failure", stat);
334 return 1;
335
Jens Axboe8770c012006-10-12 17:24:52 +0200336 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 /* All other functions, except for READ. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339 /*
340 * if we have an error, pass back CHECK_CONDITION as the
341 * scsi status byte
342 */
Jens Axboeb7156732006-11-13 18:05:02 +0100343 if (blk_pc_request(rq) && !rq->errors)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 rq->errors = SAM_STAT_CHECK_CONDITION;
345
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200346 /* check for tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 if (sense_key == NOT_READY) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200348 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200350 /* check for media change */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200351 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 return 0;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200353 } else if (sense_key == ILLEGAL_REQUEST &&
354 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
355 /*
356 * Don't print error message for this condition--
357 * SFF8090i indicates that 5/24/00 is the correct
358 * response to a request to close the tray if the
359 * drive doesn't have that capability.
360 * cdrom_log_sense() knows this!
361 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200362 } else if (!(rq->cmd_flags & REQ_QUIET)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200363 /* otherwise, print an error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 ide_dump_status(drive, "packet command error", stat);
365 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200366
Jens Axboe4aff5e22006-08-10 08:44:47 +0200367 rq->cmd_flags |= REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
369 /*
370 * instead of playing games with moving completions around,
371 * remove failed request completely and end it when the
372 * request sense has completed
373 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100374 goto end_request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
376 } else if (blk_fs_request(rq)) {
377 int do_end_request = 0;
378
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200379 /* handle errors from READ and WRITE requests */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
381 if (blk_noretry_request(rq))
382 do_end_request = 1;
383
384 if (sense_key == NOT_READY) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200385 /* tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 if (rq_data_dir(rq) == READ) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200387 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200389 /* fail the request */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200390 printk(KERN_ERR PFX "%s: tray open\n",
391 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 do_end_request = 1;
393 } else {
394 struct cdrom_info *info = drive->driver_data;
395
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200396 /*
397 * Allow the drive 5 seconds to recover, some
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 * devices will return this error while flushing
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200399 * data from cache.
400 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 if (!rq->errors)
Borislav Petkov83c85652008-04-26 22:25:15 +0200402 info->write_timeout = jiffies +
403 ATAPI_WAIT_WRITE_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 rq->errors = 1;
405 if (time_after(jiffies, info->write_timeout))
406 do_end_request = 1;
407 else {
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100408 struct request_queue *q = drive->queue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 unsigned long flags;
410
411 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200412 * take a breather relying on the unplug
413 * timer to kick us again
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 */
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100415 spin_lock_irqsave(q->queue_lock, flags);
416 blk_plug_device(q);
417 spin_unlock_irqrestore(q->queue_lock, flags);
418
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 return 1;
420 }
421 }
422 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200423 /* media change */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200424 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200426 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200427 * Arrange to retry the request but be sure to give up
428 * if we've retried too many times.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200429 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 if (++rq->errors > ERROR_MAX)
431 do_end_request = 1;
432 } else if (sense_key == ILLEGAL_REQUEST ||
433 sense_key == DATA_PROTECT) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200434 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200435 * No point in retrying after an illegal request or data
436 * protect error.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200437 */
Bartlomiej Zolnierkiewicz1ab6d742009-03-31 20:15:00 +0200438 ide_dump_status(drive, "command error", stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 do_end_request = 1;
440 } else if (sense_key == MEDIUM_ERROR) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200441 /*
442 * No point in re-trying a zillion times on a bad
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200443 * sector. If we got here the error is not correctable.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200444 */
Bartlomiej Zolnierkiewicz1ab6d742009-03-31 20:15:00 +0200445 ide_dump_status(drive, "media error (bad sector)",
446 stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 do_end_request = 1;
448 } else if (sense_key == BLANK_CHECK) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200449 /* disk appears blank ?? */
Bartlomiej Zolnierkiewicz1ab6d742009-03-31 20:15:00 +0200450 ide_dump_status(drive, "media error (blank)", stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 do_end_request = 1;
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200452 } else if ((err & ~ATA_ABORTED) != 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200453 /* go to the default handler for other errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 ide_error(drive, "cdrom_decode_status", stat);
455 return 1;
456 } else if ((++rq->errors > ERROR_MAX)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200457 /* we've racked up too many retries, abort */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 do_end_request = 1;
459 }
460
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200461 /*
462 * End a request through request sense analysis when we have
463 * sense data. We need this in order to perform end of media
464 * processing.
465 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100466 if (do_end_request)
467 goto end_request;
Alan Coxdbe217a2006-06-25 05:47:44 -0700468
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100469 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200470 * If we got a CHECK_CONDITION status, queue
471 * a request sense command.
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100472 */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200473 if (stat & ATA_ERR)
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100474 cdrom_queue_request_sense(drive, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 } else {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200476 blk_dump_rq_flags(rq, PFX "bad rq");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 cdrom_end_request(drive, 0);
478 }
479
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200480 /* retry, or handle the next request */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 return 1;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100482
483end_request:
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200484 if (stat & ATA_ERR) {
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100485 struct request_queue *q = drive->queue;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100486 unsigned long flags;
487
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100488 spin_lock_irqsave(q->queue_lock, flags);
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100489 blkdev_dequeue_request(rq);
Bartlomiej Zolnierkiewicz6ea52222008-12-29 20:27:31 +0100490 spin_unlock_irqrestore(q->queue_lock, flags);
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100491
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100492 hwif->rq = NULL;
Bartlomiej Zolnierkiewicz1d0bf582008-12-29 20:27:30 +0100493
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100494 cdrom_queue_request_sense(drive, rq->sense, rq);
495 } else
496 cdrom_end_request(drive, 0);
497
498 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499}
500
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200501/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 * Check the contents of the interrupt reason register from the cdrom
503 * and attempt to recover if there are problems. Returns 0 if everything's
504 * ok; nonzero if the request has been terminated.
505 */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100506static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
507 int len, int ireason, int rw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200509 ide_hwif_t *hwif = drive->hwif;
510
Borislav Petkov088b1b82009-01-02 13:34:47 +0100511 ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200512
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100513 /*
514 * ireason == 0: the drive wants to receive data from us
515 * ireason == 2: the drive is expecting to transfer data to us
516 */
517 if (ireason == (!rw << 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 return 0;
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100519 else if (ireason == (rw << 1)) {
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100520
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200521 /* whoops... */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200522 printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200523 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
Borislav Petkovae8789f2008-07-16 20:33:45 +0200525 ide_pad_transfer(drive, rw, len);
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100526 } else if (rw == 0 && ireason == 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200527 /*
528 * Some drives (ASUS) seem to tell us that status info is
529 * available. Just get it and ignore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200531 (void)hwif->tp_ops->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 return 0;
533 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200534 /* drive wants a command packet, or invalid ireason... */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200535 printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200536 drive->name, __func__, ireason);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 }
538
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100539 if (rq->cmd_type == REQ_TYPE_ATA_PC)
540 rq->cmd_flags |= REQ_FAILED;
541
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 cdrom_end_request(drive, 0);
543 return -1;
544}
545
546/*
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100547 * Assume that the drive will always provide data in multiples of at least
548 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
549 */
550static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
551{
Borislav Petkov088b1b82009-01-02 13:34:47 +0100552 ide_debug_log(IDE_DBG_FUNC, "len: %d", len);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200553
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100554 if ((len % SECTOR_SIZE) == 0)
555 return 0;
556
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200557 printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name,
558 __func__, len);
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100559
Borislav Petkov570f89e2008-07-23 19:56:02 +0200560 if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200561 printk(KERN_ERR PFX "This drive is not supported by this "
562 "version of the driver\n");
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100563 else {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200564 printk(KERN_ERR PFX "Trying to limit transfer sizes\n");
Borislav Petkov570f89e2008-07-23 19:56:02 +0200565 drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100566 }
567
568 return 1;
569}
570
Borislav Petkov90eb8082008-07-16 20:33:46 +0200571static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
572 struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573{
Borislav Petkov088b1b82009-01-02 13:34:47 +0100574 ide_debug_log(IDE_DBG_RQ, "rq->cmd_flags: 0x%x", rq->cmd_flags);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200575
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100576 if (rq_data_dir(rq) == READ) {
577 unsigned short sectors_per_frame =
578 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
579 int nskip = rq->sector & (sectors_per_frame - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100581 /*
582 * If the requested sector doesn't start on a frame boundary,
583 * we must adjust the start of the transfer so that it does,
584 * and remember to skip the first few sectors.
585 *
586 * If the rq->current_nr_sectors field is larger than the size
587 * of the buffer, it will mean that we're to skip a number of
588 * sectors equal to the amount by which rq->current_nr_sectors
589 * is larger than the buffer size.
590 */
591 if (nskip > 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200592 /* sanity check... */
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100593 if (rq->current_nr_sectors !=
594 bio_cur_sectors(rq->bio)) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200595 printk(KERN_ERR PFX "%s: %s: buffer botch (%u)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200596 drive->name, __func__,
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100597 rq->current_nr_sectors);
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100598 return ide_stopped;
599 }
600 rq->current_nr_sectors += nskip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 }
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200603
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200604 /* set up the command */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 rq->timeout = ATAPI_WAIT_PC;
606
Borislav Petkov90eb8082008-07-16 20:33:46 +0200607 return ide_started;
608}
609
610/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200611 * Fix up a possibly partially-processed request so that we can start it over
612 * entirely, or even put it back on the request queue.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200613 */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200614static void ide_cd_restore_request(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615{
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200616
Borislav Petkov088b1b82009-01-02 13:34:47 +0100617 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200618
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 if (rq->buffer != bio_data(rq->bio)) {
Borislav Petkov83c85652008-04-26 22:25:15 +0200620 sector_t n =
621 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622
623 rq->buffer = bio_data(rq->bio);
624 rq->nr_sectors += n;
625 rq->sector -= n;
626 }
Borislav Petkov83c85652008-04-26 22:25:15 +0200627 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
628 rq->hard_cur_sectors = rq->current_nr_sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 rq->hard_nr_sectors = rq->nr_sectors;
630 rq->hard_sector = rq->sector;
631 rq->q->prep_rq_fn(rq->q, rq);
632}
633
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200634static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct request *rq)
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100635{
Borislav Petkov088b1b82009-01-02 13:34:47 +0100636 ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200637
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100638 /*
639 * Some of the trailing request sense fields are optional,
640 * and some drives don't send them. Sigh.
641 */
642 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
643 rq->data_len > 0 && rq->data_len <= 5)
644 while (rq->data_len > 0) {
645 *(u8 *)rq->data++ = 0;
646 --rq->data_len;
647 }
648}
649
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200650int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
651 int write, void *buffer, unsigned *bufflen,
652 struct request_sense *sense, int timeout,
653 unsigned int cmd_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654{
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200655 struct cdrom_info *info = drive->driver_data;
656 struct request_sense local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 int retries = 10;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200658 unsigned int flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200660 if (!sense)
661 sense = &local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Borislav Petkov088b1b82009-01-02 13:34:47 +0100663 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
664 "cmd_flags: 0x%x",
665 cmd[0], write, timeout, cmd_flags);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200666
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200667 /* start of retry loop */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 do {
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200669 struct request *rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200672 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
673
674 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
675 rq->cmd_type = REQ_TYPE_ATA_PC;
676 rq->sense = sense;
677 rq->cmd_flags |= cmd_flags;
678 rq->timeout = timeout;
679 if (buffer) {
680 rq->data = buffer;
681 rq->data_len = *bufflen;
682 }
683
684 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
685
686 if (buffer)
687 *bufflen = rq->data_len;
688
689 flags = rq->cmd_flags;
690 blk_put_request(rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200692 /*
693 * FIXME: we should probably abort/retry or something in case of
694 * failure.
695 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200696 if (flags & REQ_FAILED) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200697 /*
698 * The request failed. Retry if it was due to a unit
699 * attention status (usually means media was changed).
700 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200701 struct request_sense *reqbuf = sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702
703 if (reqbuf->sense_key == UNIT_ATTENTION)
704 cdrom_saw_media_change(drive);
705 else if (reqbuf->sense_key == NOT_READY &&
706 reqbuf->asc == 4 && reqbuf->ascq != 4) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200707 /*
708 * The drive is in the process of loading
709 * a disk. Retry, but wait a little to give
710 * the drive time to complete the load.
711 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712 ssleep(2);
713 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200714 /* otherwise, don't retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 retries = 0;
716 }
717 --retries;
718 }
719
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200720 /* end of retry loop */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200721 } while ((flags & REQ_FAILED) && retries >= 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200723 /* return an error if the command failed */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200724 return (flags & REQ_FAILED) ? -EIO : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725}
726
727/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200728 * Called from blk_end_request_callback() after the data of the request is
729 * completed and before the request itself is completed. By returning value '1',
730 * blk_end_request_callback() returns immediately without completing it.
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500731 */
732static int cdrom_newpc_intr_dummy_cb(struct request *rq)
733{
734 return 1;
735}
736
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
738{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200739 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100740 struct request *rq = hwif->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 xfer_func_t *xferfunc;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100742 ide_expiry_t *expiry = NULL;
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200743 int dma_error = 0, dma, stat, thislen, uptodate = 0;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100744 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
745 unsigned int timeout;
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200746 u16 len;
747 u8 ireason;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748
Borislav Petkov088b1b82009-01-02 13:34:47 +0100749 ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x",
750 rq->cmd[0], write);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200751
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200752 /* check for errors */
Borislav Petkov12469ac2008-10-13 21:39:49 +0200753 dma = drive->dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 if (dma) {
Borislav Petkov12469ac2008-10-13 21:39:49 +0200755 drive->dma = 0;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200756 dma_error = hwif->dma_ops->dma_end(drive);
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100757 if (dma_error) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200758 printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100759 write ? "write" : "read");
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100760 ide_dma_off(drive);
761 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 }
763
764 if (cdrom_decode_status(drive, 0, &stat))
765 return ide_stopped;
766
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200767 /* using dma, transfer is complete now */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 if (dma) {
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100769 if (dma_error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 return ide_error(drive, "dma error", stat);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100771 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicz130e8862009-03-27 12:46:45 +0100772 ide_complete_rq(drive, 0, rq->nr_sectors
773 ? (rq->nr_sectors << 9) : ide_rq_bytes(rq));
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100774 return ide_stopped;
Borislav Petkov9e772d02009-02-02 20:12:21 +0100775 } else if (rq->cmd_type == REQ_TYPE_ATA_PC && !rq->bio) {
Bartlomiej Zolnierkiewicz130e8862009-03-27 12:46:45 +0100776 ide_complete_rq(drive, 0, 512);
Borislav Petkov9e772d02009-02-02 20:12:21 +0100777 return ide_stopped;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100778 }
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200779 if (blk_pc_request(rq) == 0 && uptodate == 0)
780 rq->cmd_flags |= REQ_FAILED;
781 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 }
783
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200784 ide_read_bcount_and_ireason(drive, &len, &ireason);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100785
786 thislen = blk_fs_request(rq) ? len : rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 if (thislen > len)
788 thislen = len;
789
Borislav Petkov088b1b82009-01-02 13:34:47 +0100790 ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
791 stat, thislen);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200792
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200793 /* If DRQ is clear, the command has completed. */
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200794 if ((stat & ATA_DRQ) == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100795 if (blk_fs_request(rq)) {
796 /*
797 * If we're not done reading/writing, complain.
798 * Otherwise, complete the command normally.
799 */
800 uptodate = 1;
801 if (rq->current_nr_sectors > 0) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200802 printk(KERN_ERR PFX "%s: %s: data underrun "
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100803 "(%d blocks)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200804 drive->name, __func__,
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100805 rq->current_nr_sectors);
806 if (!write)
807 rq->cmd_flags |= REQ_FAILED;
808 uptodate = 0;
809 }
810 cdrom_end_request(drive, uptodate);
811 return ide_stopped;
812 } else if (!blk_pc_request(rq)) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200813 ide_cd_request_sense_fixup(drive, rq);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200814 /* complain if we still have data left to transfer */
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100815 uptodate = rq->data_len ? 0 : 1;
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200816 if (uptodate == 0)
817 rq->cmd_flags |= REQ_FAILED;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100818 }
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200819 goto out_end;
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500820 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200822 /* check which way to transfer data */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100823 if (ide_cd_check_ireason(drive, rq, len, ireason, write))
824 return ide_stopped;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100825
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100826 if (blk_fs_request(rq)) {
827 if (write == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100828 int nskip;
829
830 if (ide_cd_check_transfer_size(drive, len)) {
831 cdrom_end_request(drive, 0);
832 return ide_stopped;
833 }
834
835 /*
836 * First, figure out if we need to bit-bucket
837 * any of the leading sectors.
838 */
839 nskip = min_t(int, rq->current_nr_sectors
840 - bio_cur_sectors(rq->bio),
841 thislen >> 9);
842 if (nskip > 0) {
Borislav Petkovae8789f2008-07-16 20:33:45 +0200843 ide_pad_transfer(drive, write, nskip << 9);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100844 rq->current_nr_sectors -= nskip;
845 thislen -= (nskip << 9);
846 }
847 }
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100848 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100850 if (ireason == 0) {
851 write = 1;
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200852 xferfunc = hwif->tp_ops->output_data;
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100853 } else {
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100854 write = 0;
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200855 xferfunc = hwif->tp_ops->input_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 }
857
Borislav Petkov088b1b82009-01-02 13:34:47 +0100858 ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
859 "ireason: 0x%x",
860 rq->cmd_type, ireason);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200861
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200862 /* transfer data */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 while (thislen > 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100864 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
Bartlomiej Zolnierkiewicza11e77d2008-02-01 23:09:27 +0100865 int blen = rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200867 /* bio backed? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 if (rq->bio) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100869 if (blk_fs_request(rq)) {
870 ptr = rq->buffer;
871 blen = rq->current_nr_sectors << 9;
872 } else {
873 ptr = bio_data(rq->bio);
874 blen = bio_iovec(rq->bio)->bv_len;
875 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 }
877
878 if (!ptr) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100879 if (blk_fs_request(rq) && !write)
880 /*
Borislav Petkov968c4962008-04-26 17:36:37 +0200881 * If the buffers are full, pipe the rest into
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200882 * oblivion.
883 */
Borislav Petkovae8789f2008-07-16 20:33:45 +0200884 ide_pad_transfer(drive, 0, thislen);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100885 else {
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200886 printk(KERN_ERR PFX "%s: confused, missing data\n",
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100887 drive->name);
888 blk_dump_rq_flags(rq, rq_data_dir(rq)
889 ? "cdrom_newpc_intr, write"
890 : "cdrom_newpc_intr, read");
891 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 break;
893 }
894
895 if (blen > thislen)
896 blen = thislen;
897
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200898 xferfunc(drive, NULL, ptr, blen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
900 thislen -= blen;
901 len -= blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100903 if (blk_fs_request(rq)) {
904 rq->buffer += blen;
905 rq->nr_sectors -= (blen >> 9);
906 rq->current_nr_sectors -= (blen >> 9);
907 rq->sector += (blen >> 9);
908
909 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
910 cdrom_end_request(drive, 1);
911 } else {
912 rq->data_len -= blen;
913
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500914 /*
915 * The request can't be completed until DRQ is cleared.
916 * So complete the data, but don't complete the request
917 * using the dummy function for the callback feature
918 * of blk_end_request_callback().
919 */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100920 if (rq->bio)
921 blk_end_request_callback(rq, 0, blen,
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500922 cdrom_newpc_intr_dummy_cb);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100923 else
924 rq->data += blen;
925 }
Andreas Schwabbcd88ac2008-02-26 21:50:35 +0100926 if (!write && blk_sense_request(rq))
927 rq->sense_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928 }
929
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200930 /* pad, if necessary */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100931 if (!blk_fs_request(rq) && len > 0)
Borislav Petkovae8789f2008-07-16 20:33:45 +0200932 ide_pad_transfer(drive, write, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100934 if (blk_pc_request(rq)) {
935 timeout = rq->timeout;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100936 } else {
937 timeout = ATAPI_WAIT_PC;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100938 if (!blk_fs_request(rq))
Borislav Petkov4cad0852009-01-02 16:12:53 +0100939 expiry = ide_cd_expiry;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100940 }
941
Bartlomiej Zolnierkiewicz60c0cd02009-03-27 12:46:46 +0100942 hwif->expiry = expiry;
943 ide_set_handler(drive, cdrom_newpc_intr, timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 return ide_started;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100945
Bartlomiej Zolnierkiewicz984c5e52009-03-31 20:15:03 +0200946out_end:
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100947 if (blk_pc_request(rq)) {
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +0100948 unsigned int dlen = rq->data_len;
949
950 if (dma)
951 rq->data_len = 0;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100952
Bartlomiej Zolnierkiewicz3c8a2cc2008-12-29 20:27:31 +0100953 if (blk_end_request(rq, 0, dlen))
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100954 BUG();
Bartlomiej Zolnierkiewicz1d0bf582008-12-29 20:27:30 +0100955
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100956 hwif->rq = NULL;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100957 } else {
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100958 cdrom_end_request(drive, uptodate);
959 }
960 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961}
962
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100963static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964{
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100965 struct cdrom_info *cd = drive->driver_data;
966 int write = rq_data_dir(rq) == WRITE;
967 unsigned short sectors_per_frame =
968 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
969
Borislav Petkov088b1b82009-01-02 13:34:47 +0100970 ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, write: 0x%x, "
971 "secs_per_frame: %u",
972 rq->cmd[0], write, sectors_per_frame);
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200973
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100974 if (write) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200975 /* disk has become write protected */
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200976 if (get_disk_ro(cd->disk))
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100977 return ide_stopped;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100978 } else {
979 /*
980 * We may be retrying this request after an error. Fix up any
981 * weirdness which might be present in the request packet.
982 */
Borislav Petkovfc8323f2008-10-13 21:39:48 +0200983 ide_cd_restore_request(drive, rq);
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100984 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200986 /* use DMA, if possible / writes *must* be hardware frame aligned */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
988 (rq->sector & (sectors_per_frame - 1))) {
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +0200989 if (write)
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100990 return ide_stopped;
Borislav Petkov12469ac2008-10-13 21:39:49 +0200991 drive->dma = 0;
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100992 } else
Borislav Petkov12469ac2008-10-13 21:39:49 +0200993 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +0100995 if (write)
996 cd->devinfo.media_written = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997
Borislav Petkovb6ca4402008-07-16 20:33:46 +0200998 return ide_started;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999}
1000
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001001static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003
Borislav Petkov088b1b82009-01-02 13:34:47 +01001004 ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
1005 rq->cmd[0], rq->cmd_type);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001006
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001007 if (blk_pc_request(rq))
1008 rq->cmd_flags |= REQ_QUIET;
1009 else
1010 rq->cmd_flags &= ~REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011
Borislav Petkov12469ac2008-10-13 21:39:49 +02001012 drive->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001014 /* sg request */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001015 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
1016 struct request_queue *q = drive->queue;
1017 unsigned int alignment;
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +02001018 char *buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001020 if (rq->bio)
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +02001021 buf = bio_data(rq->bio);
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001022 else
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +02001023 buf = rq->data;
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001024
Borislav Petkov12469ac2008-10-13 21:39:49 +02001025 drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026
1027 /*
1028 * check if dma is safe
Linus Torvalds5d9e4ea2005-05-27 07:36:17 -07001029 *
1030 * NOTE! The "len" and "addr" checks should possibly have
1031 * separate masks.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032 */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001033 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
Borislav Petkov9bd27cb2008-11-02 21:40:07 +01001034 if ((unsigned long)buf & alignment
1035 || rq->data_len & q->dma_pad_mask
FUJITA Tomonoriefa402d2008-10-10 22:39:22 +02001036 || object_is_on_stack(buf))
Borislav Petkov12469ac2008-10-13 21:39:49 +02001037 drive->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039}
1040
Borislav Petkov99384ae2008-07-16 20:33:45 +02001041static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
Borislav Petkove5e076a2008-04-26 22:25:15 +02001042 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043{
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +01001044 struct ide_cmd cmd;
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +02001045 int uptodate = 0;
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +01001046
Borislav Petkov088b1b82009-01-02 13:34:47 +01001047 ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
1048 rq->cmd[0], (unsigned long long)block);
1049
1050 if (drive->debug_mask & IDE_DBG_RQ)
1051 blk_dump_rq_flags(rq, "ide_cd_do_request");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001052
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +02001054 if (cdrom_start_rw(drive, rq) == ide_stopped ||
1055 ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
1056 goto out_end;
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001057 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
Jens Axboecea28852006-10-12 15:08:45 +02001058 rq->cmd_type == REQ_TYPE_ATA_PC) {
Borislav Petkov7fcebda2008-07-16 20:33:46 +02001059 if (!rq->timeout)
1060 rq->timeout = ATAPI_WAIT_PC;
1061
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001062 cdrom_do_block_pc(drive, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001063 } else if (blk_special_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001064 /* right now this can only be a reset... */
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +02001065 uptodate = 1;
1066 goto out_end;
Borislav Petkovab9d6e32008-07-16 20:33:45 +02001067 } else {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001068 blk_dump_rq_flags(rq, DRV_NAME " bad flags");
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +02001069 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070 }
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001071
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +01001072 memset(&cmd, 0, sizeof(cmd));
1073
1074 if (rq_data_dir(rq))
1075 cmd.tf_flags |= IDE_TFLAG_WRITE;
1076
1077 cmd.rq = rq;
1078
1079 return ide_issue_pc(drive, &cmd);
Bartlomiej Zolnierkiewicze0458cc2009-03-31 20:15:02 +02001080out_end:
1081 cdrom_end_request(drive, uptodate);
1082 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083}
1084
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001085/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 * Ioctl handling.
1087 *
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001088 * Routines which queue packet commands take as a final argument a pointer to a
1089 * request_sense struct. If execution of the command results in an error with a
1090 * CHECK CONDITION status, this structure will be filled with the results of the
1091 * subsequent request sense command. The pointer can also be NULL, in which case
1092 * no sense information is returned.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093 */
Borislav Petkove5e076a2008-04-26 22:25:15 +02001094static void msf_from_bcd(struct atapi_msf *msf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095{
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001096 msf->minute = bcd2bin(msf->minute);
1097 msf->second = bcd2bin(msf->second);
1098 msf->frame = bcd2bin(msf->frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099}
1100
Borislav Petkovf9afd182008-02-01 23:09:29 +01001101int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 struct cdrom_info *info = drive->driver_data;
1104 struct cdrom_device_info *cdi = &info->devinfo;
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001105 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106
Borislav Petkov088b1b82009-01-02 13:34:47 +01001107 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001108
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001109 memset(cmd, 0, BLK_MAX_CDB);
1110 cmd[0] = GPCMD_TEST_UNIT_READY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001112 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001113 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1114 * instead of supporting the LOAD_UNLOAD opcode.
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001115 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001116 cmd[7] = cdi->sanyo_slot % 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117
Harvey Harrison141d3b22008-07-23 19:56:02 +02001118 return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119}
1120
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1122 unsigned long *sectors_per_frame,
1123 struct request_sense *sense)
1124{
1125 struct {
Harvey Harrison141d3b22008-07-23 19:56:02 +02001126 __be32 lba;
1127 __be32 blocklen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 } capbuf;
1129
1130 int stat;
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001131 unsigned char cmd[BLK_MAX_CDB];
1132 unsigned len = sizeof(capbuf);
Petr Tesarik938bb032008-08-05 18:17:02 +02001133 u32 blocklen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134
Borislav Petkov088b1b82009-01-02 13:34:47 +01001135 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001136
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001137 memset(cmd, 0, BLK_MAX_CDB);
1138 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001140 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1141 REQ_QUIET);
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001142 if (stat)
1143 return stat;
1144
1145 /*
1146 * Sanity check the given block size
1147 */
Petr Tesarik938bb032008-08-05 18:17:02 +02001148 blocklen = be32_to_cpu(capbuf.blocklen);
1149 switch (blocklen) {
1150 case 512:
1151 case 1024:
1152 case 2048:
1153 case 4096:
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001154 break;
1155 default:
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001156 printk(KERN_ERR PFX "%s: weird block size %u\n",
1157 drive->name, blocklen);
1158 printk(KERN_ERR PFX "%s: default to 2kb block size\n",
1159 drive->name);
Petr Tesarik938bb032008-08-05 18:17:02 +02001160 blocklen = 2048;
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001161 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162 }
1163
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001164 *capacity = 1 + be32_to_cpu(capbuf.lba);
Petr Tesarik938bb032008-08-05 18:17:02 +02001165 *sectors_per_frame = blocklen >> SECTOR_BITS;
Borislav Petkov71b429ca2008-10-17 18:09:14 +02001166
Borislav Petkov088b1b82009-01-02 13:34:47 +01001167 ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
1168 *capacity, *sectors_per_frame);
Borislav Petkov71b429ca2008-10-17 18:09:14 +02001169
Jens Axboee8e7b9e2008-07-24 22:53:35 +02001170 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171}
1172
1173static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1174 int format, char *buf, int buflen,
1175 struct request_sense *sense)
1176{
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001177 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178
Borislav Petkov088b1b82009-01-02 13:34:47 +01001179 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001180
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001181 memset(cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001183 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1184 cmd[6] = trackno;
1185 cmd[7] = (buflen >> 8);
1186 cmd[8] = (buflen & 0xff);
1187 cmd[9] = (format << 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188
1189 if (msf_flag)
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001190 cmd[1] = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001192 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001193}
1194
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195/* Try to read the entire TOC for the disk into our internal buffer. */
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001196int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197{
1198 int stat, ntracks, i;
1199 struct cdrom_info *info = drive->driver_data;
1200 struct cdrom_device_info *cdi = &info->devinfo;
1201 struct atapi_toc *toc = info->toc;
1202 struct {
1203 struct atapi_toc_header hdr;
1204 struct atapi_toc_entry ent;
1205 } ms_tmp;
1206 long last_written;
1207 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1208
Borislav Petkov088b1b82009-01-02 13:34:47 +01001209 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001210
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211 if (toc == NULL) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001212 /* try to allocate space */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001213 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 if (toc == NULL) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001215 printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001216 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217 return -ENOMEM;
1218 }
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001219 info->toc = toc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220 }
1221
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001222 /*
1223 * Check to see if the existing data is still valid. If it is,
1224 * just return.
1225 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 (void) cdrom_check_status(drive, sense);
1227
Borislav Petkov570f89e2008-07-23 19:56:02 +02001228 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001229 return 0;
1230
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001231 /* try to get the total cdrom capacity and sector size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232 stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
1233 sense);
1234 if (stat)
1235 toc->capacity = 0x1fffff;
1236
1237 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001238 /* save a private copy of the TOC capacity for error handling */
Alan Coxdbe217a2006-06-25 05:47:44 -07001239 drive->probed_capacity = toc->capacity * sectors_per_frame;
1240
Linus Torvalds1da177e2005-04-16 15:20:36 -07001241 blk_queue_hardsect_size(drive->queue,
1242 sectors_per_frame << SECTOR_BITS);
1243
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001244 /* first read just the header, so we know how long the TOC is */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1246 sizeof(struct atapi_toc_header), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001247 if (stat)
1248 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249
Borislav Petkov570f89e2008-07-23 19:56:02 +02001250 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001251 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1252 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254
1255 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1256 if (ntracks <= 0)
1257 return -EIO;
1258 if (ntracks > MAX_TRACKS)
1259 ntracks = MAX_TRACKS;
1260
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001261 /* now read the whole schmeer */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1263 (char *)&toc->hdr,
1264 sizeof(struct atapi_toc_header) +
1265 (ntracks + 1) *
1266 sizeof(struct atapi_toc_entry), sense);
1267
1268 if (stat && toc->hdr.first_track > 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001269 /*
1270 * Cds with CDI tracks only don't have any TOC entries, despite
1271 * of this the returned values are
1272 * first_track == last_track = number of CDI tracks + 1,
1273 * so that this case is indistinguishable from the same layout
1274 * plus an additional audio track. If we get an error for the
1275 * regular case, we assume a CDI without additional audio
1276 * tracks. In this case the readable TOC is empty (CDI tracks
1277 * are not included) and only holds the Leadout entry.
1278 *
1279 * Heiko Eißfeldt.
1280 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281 ntracks = 0;
1282 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1283 (char *)&toc->hdr,
1284 sizeof(struct atapi_toc_header) +
1285 (ntracks + 1) *
1286 sizeof(struct atapi_toc_entry),
1287 sense);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001288 if (stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289 return stat;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001290
Borislav Petkov570f89e2008-07-23 19:56:02 +02001291 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001292 toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
1293 toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001294 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 toc->hdr.first_track = CDROM_LEADOUT;
1296 toc->hdr.last_track = CDROM_LEADOUT;
1297 }
1298 }
1299
1300 if (stat)
1301 return stat;
1302
Borislav Petkov7eb43fd2008-02-11 00:32:13 +01001303 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304
Borislav Petkov570f89e2008-07-23 19:56:02 +02001305 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001306 toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
1307 toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001310 for (i = 0; i <= ntracks; i++) {
Borislav Petkov570f89e2008-07-23 19:56:02 +02001311 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1312 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
Adrian Bunkfc99856a2008-08-18 21:40:04 +02001313 toc->ent[i].track = bcd2bin(toc->ent[i].track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 msf_from_bcd(&toc->ent[i].addr.msf);
1315 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001316 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1317 toc->ent[i].addr.msf.second,
1318 toc->ent[i].addr.msf.frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319 }
1320
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321 if (toc->hdr.first_track != CDROM_LEADOUT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001322 /* read the multisession information */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1324 sizeof(ms_tmp), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001325 if (stat)
1326 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327
1328 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1329 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +02001330 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1331 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1333 }
1334
Borislav Petkov570f89e2008-07-23 19:56:02 +02001335 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001336 /* re-read multisession information using MSF format */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1338 sizeof(ms_tmp), sense);
1339 if (stat)
1340 return stat;
1341
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001342 msf_from_bcd(&ms_tmp.ent.addr.msf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001343 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001344 ms_tmp.ent.addr.msf.second,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001345 ms_tmp.ent.addr.msf.frame);
1346 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347
1348 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1349
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001350 /* now try to get the total cdrom capacity */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001351 stat = cdrom_get_last_written(cdi, &last_written);
1352 if (!stat && (last_written > toc->capacity)) {
1353 toc->capacity = last_written;
1354 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Alan Coxdbe217a2006-06-25 05:47:44 -07001355 drive->probed_capacity = toc->capacity * sectors_per_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 }
1357
1358 /* Remember that we've read this stuff. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001359 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360
1361 return 0;
1362}
1363
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001364int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001365{
1366 struct cdrom_info *info = drive->driver_data;
1367 struct cdrom_device_info *cdi = &info->devinfo;
1368 struct packet_command cgc;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001369 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001370
Borislav Petkov088b1b82009-01-02 13:34:47 +01001371 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001372
Borislav Petkov570f89e2008-07-23 19:56:02 +02001373 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001374 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001375
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001376 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001377 do {
1378 /* we seem to get stat=0x01,err=0x00 the first time (??) */
Eric Piel9235e682005-06-23 00:10:29 -07001379 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1380 if (!stat)
1381 break;
1382 } while (--attempts);
1383 return stat;
1384}
1385
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001386void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001387{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001388 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001389 u16 curspeed, maxspeed;
1390
Borislav Petkov088b1b82009-01-02 13:34:47 +01001391 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001392
Borislav Petkov570f89e2008-07-23 19:56:02 +02001393 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
Harvey Harrison141d3b22008-07-23 19:56:02 +02001394 curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
1395 maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
Eric Piel9235e682005-06-23 00:10:29 -07001396 } else {
Harvey Harrison141d3b22008-07-23 19:56:02 +02001397 curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
1398 maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
Eric Piel9235e682005-06-23 00:10:29 -07001399 }
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001400
Borislav Petkov088b1b82009-01-02 13:34:47 +01001401 ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
1402 curspeed, maxspeed);
Borislav Petkov71b429ca2008-10-17 18:09:14 +02001403
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001404 cd->current_speed = (curspeed + (176/2)) / 176;
1405 cd->max_speed = (maxspeed + (176/2)) / 176;
Eric Piel9235e682005-06-23 00:10:29 -07001406}
1407
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001408#define IDE_CD_CAPABILITIES \
1409 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1410 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1411 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1412 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1413 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415static struct cdrom_device_ops ide_cdrom_dops = {
1416 .open = ide_cdrom_open_real,
1417 .release = ide_cdrom_release_real,
1418 .drive_status = ide_cdrom_drive_status,
1419 .media_changed = ide_cdrom_check_media_change_real,
1420 .tray_move = ide_cdrom_tray_move,
1421 .lock_door = ide_cdrom_lock_door,
1422 .select_speed = ide_cdrom_select_speed,
1423 .get_last_session = ide_cdrom_get_last_session,
1424 .get_mcn = ide_cdrom_get_mcn,
1425 .reset = ide_cdrom_reset,
1426 .audio_ioctl = ide_cdrom_audio_ioctl,
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001427 .capability = IDE_CD_CAPABILITIES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 .generic_packet = ide_cdrom_packet,
1429};
1430
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001431static int ide_cdrom_register(ide_drive_t *drive, int nslots)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432{
1433 struct cdrom_info *info = drive->driver_data;
1434 struct cdrom_device_info *devinfo = &info->devinfo;
1435
Borislav Petkov088b1b82009-01-02 13:34:47 +01001436 ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001437
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438 devinfo->ops = &ide_cdrom_dops;
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001439 devinfo->speed = info->current_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440 devinfo->capacity = nslots;
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001441 devinfo->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442 strcpy(devinfo->name, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443
Borislav Petkov570f89e2008-07-23 19:56:02 +02001444 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
Bartlomiej Zolnierkiewicz3cbd8142007-12-24 15:23:43 +01001445 devinfo->mask |= CDC_SELECT_SPEED;
1446
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447 devinfo->disk = info->disk;
1448 return register_cdrom(devinfo);
1449}
1450
Borislav Petkove5e076a2008-04-26 22:25:15 +02001451static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001453 struct cdrom_info *cd = drive->driver_data;
1454 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001455 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1456 mechtype_t mechtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 int nslots = 1;
1458
Borislav Petkov088b1b82009-01-02 13:34:47 +01001459 ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
1460 drive->media, drive->atapi_flags);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001461
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001462 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1463 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1464 CDC_MO_DRIVE | CDC_RAM);
1465
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466 if (drive->media == ide_optical) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001467 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001468 printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001469 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 return nslots;
1471 }
1472
Borislav Petkov570f89e2008-07-23 19:56:02 +02001473 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1474 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001475 cdi->mask &= ~CDC_PLAY_AUDIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001476 return nslots;
1477 }
1478
1479 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001480 * We have to cheat a little here. the packet will eventually be queued
1481 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1482 * Since this device hasn't been registered with the Uniform layer yet,
1483 * it can't do this. Same goes for cdi->ops.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484 */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001485 cdi->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486 cdi->ops = &ide_cdrom_dops;
1487
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001488 if (ide_cdrom_get_capabilities(drive, buf))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489 return 0;
1490
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001491 if ((buf[8 + 6] & 0x01) == 0)
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +02001492 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001493 if (buf[8 + 6] & 0x08)
Borislav Petkov570f89e2008-07-23 19:56:02 +02001494 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001495 if (buf[8 + 3] & 0x01)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001496 cdi->mask &= ~CDC_CD_R;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001497 if (buf[8 + 3] & 0x02)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001498 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001499 if (buf[8 + 2] & 0x38)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001500 cdi->mask &= ~CDC_DVD;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001501 if (buf[8 + 3] & 0x20)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001502 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001503 if (buf[8 + 3] & 0x10)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001504 cdi->mask &= ~CDC_DVD_R;
Borislav Petkov570f89e2008-07-23 19:56:02 +02001505 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001506 cdi->mask &= ~CDC_PLAY_AUDIO;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001507
1508 mechtype = buf[8 + 6] >> 5;
Borislav Petkovf20f2582008-10-05 18:23:27 +02001509 if (mechtype == mechtype_caddy ||
1510 mechtype == mechtype_popup ||
1511 (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001512 cdi->mask |= CDC_CLOSE_TRAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 if (cdi->sanyo_slot > 0) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001515 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516 nslots = 3;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001517 } else if (mechtype == mechtype_individual_changer ||
1518 mechtype == mechtype_cartridge_changer) {
Bartlomiej Zolnierkiewicz2609d062008-02-01 23:09:19 +01001519 nslots = cdrom_number_of_slots(cdi);
1520 if (nslots > 1)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001521 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001522 }
1523
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001524 ide_cdrom_update_speed(drive, buf);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001525
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001526 printk(KERN_INFO PFX "%s: ATAPI", drive->name);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001527
1528 /* don't print speed if the drive reported 0 */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001529 if (cd->max_speed)
1530 printk(KERN_CONT " %dX", cd->max_speed);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001531
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001532 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001533
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001534 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1535 printk(KERN_CONT " DVD%s%s",
1536 (cdi->mask & CDC_DVD_R) ? "" : "-R",
Borislav Petkov419a5b62008-10-17 18:09:14 +02001537 (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001539 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1540 printk(KERN_CONT " CD%s%s",
1541 (cdi->mask & CDC_CD_R) ? "" : "-R",
1542 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001543
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001544 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1545 printk(KERN_CONT " changer w/%d slots", nslots);
1546 else
1547 printk(KERN_CONT " drive");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001549 printk(KERN_CONT ", %dkB Cache\n",
1550 be16_to_cpup((__be16 *)&buf[8 + 12]));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001551
1552 return nslots;
1553}
1554
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001555/* standard prep_rq_fn that builds 10 byte cmds */
Jens Axboe165125e2007-07-24 09:28:11 +02001556static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001557{
1558 int hard_sect = queue_hardsect_size(q);
1559 long block = (long)rq->hard_sector / (hard_sect >> 9);
1560 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1561
FUJITA Tomonorid34c87e2008-04-29 14:37:52 +02001562 memset(rq->cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001563
1564 if (rq_data_dir(rq) == READ)
1565 rq->cmd[0] = GPCMD_READ_10;
1566 else
1567 rq->cmd[0] = GPCMD_WRITE_10;
1568
1569 /*
1570 * fill in lba
1571 */
1572 rq->cmd[2] = (block >> 24) & 0xff;
1573 rq->cmd[3] = (block >> 16) & 0xff;
1574 rq->cmd[4] = (block >> 8) & 0xff;
1575 rq->cmd[5] = block & 0xff;
1576
1577 /*
1578 * and transfer length
1579 */
1580 rq->cmd[7] = (blocks >> 8) & 0xff;
1581 rq->cmd[8] = blocks & 0xff;
1582 rq->cmd_len = 10;
1583 return BLKPREP_OK;
1584}
1585
1586/*
1587 * Most of the SCSI commands are supported directly by ATAPI devices.
1588 * This transform handles the few exceptions.
1589 */
1590static int ide_cdrom_prep_pc(struct request *rq)
1591{
1592 u8 *c = rq->cmd;
1593
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001594 /* transform 6-byte read/write commands to the 10-byte version */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595 if (c[0] == READ_6 || c[0] == WRITE_6) {
1596 c[8] = c[4];
1597 c[5] = c[3];
1598 c[4] = c[2];
1599 c[3] = c[1] & 0x1f;
1600 c[2] = 0;
1601 c[1] &= 0xe0;
1602 c[0] += (READ_10 - READ_6);
1603 rq->cmd_len = 10;
1604 return BLKPREP_OK;
1605 }
1606
1607 /*
1608 * it's silly to pretend we understand 6-byte sense commands, just
1609 * reject with ILLEGAL_REQUEST and the caller should take the
1610 * appropriate action
1611 */
1612 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1613 rq->errors = ILLEGAL_REQUEST;
1614 return BLKPREP_KILL;
1615 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001616
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617 return BLKPREP_OK;
1618}
1619
Jens Axboe165125e2007-07-24 09:28:11 +02001620static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001621{
Jens Axboe4aff5e22006-08-10 08:44:47 +02001622 if (blk_fs_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001623 return ide_cdrom_prep_fs(q, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001624 else if (blk_pc_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625 return ide_cdrom_prep_pc(rq);
1626
1627 return 0;
1628}
1629
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001630struct cd_list_entry {
1631 const char *id_model;
1632 const char *id_firmware;
1633 unsigned int cd_flags;
1634};
1635
Borislav Petkov5e657a92008-04-26 22:25:15 +02001636#ifdef CONFIG_IDE_PROC_FS
1637static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1638{
1639 unsigned long capacity, sectors_per_frame;
1640
1641 if (cdrom_read_capacity(drive, &capacity, &sectors_per_frame, NULL))
1642 return 0;
1643
1644 return capacity * sectors_per_frame;
1645}
1646
Borislav Petkove5e076a2008-04-26 22:25:15 +02001647static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1648 int count, int *eof, void *data)
Borislav Petkov5e657a92008-04-26 22:25:15 +02001649{
1650 ide_drive_t *drive = data;
1651 int len;
1652
1653 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1654 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1655}
1656
1657static ide_proc_entry_t idecd_proc[] = {
1658 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1659 { NULL, 0, NULL, NULL }
1660};
1661
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001662static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
1663{
1664 return idecd_proc;
1665}
1666
1667static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
1668{
Bartlomiej Zolnierkiewicz519d6802008-12-29 20:27:38 +01001669 return NULL;
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001670}
Borislav Petkov5e657a92008-04-26 22:25:15 +02001671#endif
1672
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001673static const struct cd_list_entry ide_cd_quirks_list[] = {
1674 /* Limit transfer size per interrupt. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001675 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1676 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001677 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001678 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001679 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001680 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1681 IDE_AFLAG_PRE_ATAPI12, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001682 /* Vertos 300, some versions of this drive like to talk BCD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001683 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001684 /* Vertos 600 ESD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001685 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001686 /*
1687 * Sanyo 3 CD changer uses a non-standard command for CD changing
1688 * (by default standard ATAPI support for CD changers is used).
1689 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001690 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1691 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1692 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001693 /* Stingray 8X CD-ROM. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001694 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001695 /*
1696 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1697 * mode sense page capabilities size, but older drives break.
1698 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001699 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1700 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001701 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001702 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001703 /*
1704 * Some drives used by Apple don't advertise audio play
1705 * but they do support reading TOC & audio datas.
1706 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001707 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1708 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1709 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1710 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1711 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
Bodo Eggertf3e85ee2008-10-05 18:23:28 +02001712 { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
Borislav Petkovf20f2582008-10-05 18:23:27 +02001713 { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
Márton Németh64c2eae22008-10-23 23:22:09 +02001714 { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001715 { NULL, NULL, 0 }
1716};
1717
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001718static unsigned int ide_cd_flags(u16 *id)
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001719{
1720 const struct cd_list_entry *cle = ide_cd_quirks_list;
1721
1722 while (cle->id_model) {
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001723 if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001724 (cle->id_firmware == NULL ||
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001725 strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001726 return cle->cd_flags;
1727 cle++;
1728 }
1729
1730 return 0;
1731}
1732
Borislav Petkove5e076a2008-04-26 22:25:15 +02001733static int ide_cdrom_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001735 struct cdrom_info *cd = drive->driver_data;
1736 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001737 u16 *id = drive->id;
1738 char *fw_rev = (char *)&id[ATA_ID_FW_REV];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739 int nslots;
1740
Borislav Petkov088b1b82009-01-02 13:34:47 +01001741 ide_debug_log(IDE_DBG_PROBE, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001742
Linus Torvalds1da177e2005-04-16 15:20:36 -07001743 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1744 blk_queue_dma_alignment(drive->queue, 31);
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001745 blk_queue_update_dma_pad(drive->queue, 15);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001746 drive->queue->unplug_delay = (1 * HZ) / 1000;
1747 if (!drive->queue->unplug_delay)
1748 drive->queue->unplug_delay = 1;
1749
Bartlomiej Zolnierkiewiczfe11edf2008-10-17 18:09:11 +02001750 drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
1751 drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752
Borislav Petkov570f89e2008-07-23 19:56:02 +02001753 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001754 fw_rev[4] == '1' && fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001755 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1756 IDE_AFLAG_TOCADDR_AS_BCD);
1757 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001758 fw_rev[4] == '1' && fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001759 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1760 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001761 /* 3 => use CD in slot 0 */
1762 cdi->sanyo_slot = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001763
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001764 nslots = ide_cdrom_probe_capabilities(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001765
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001766 /* set correct block size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001767 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1768
Linus Torvalds1da177e2005-04-16 15:20:36 -07001769 if (ide_cdrom_register(drive, nslots)) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001770 printk(KERN_ERR PFX "%s: %s failed to register device with the"
Borislav Petkov83c85652008-04-26 22:25:15 +02001771 " cdrom driver.\n", drive->name, __func__);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001772 cd->devinfo.handle = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773 return 1;
1774 }
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +02001775
1776 ide_proc_register_driver(drive, cd->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001777 return 0;
1778}
1779
Russell King4031bbe2006-01-06 11:41:00 +00001780static void ide_cd_remove(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001781{
1782 struct cdrom_info *info = drive->driver_data;
1783
Borislav Petkov088b1b82009-01-02 13:34:47 +01001784 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001785
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001786 ide_proc_unregister_driver(drive, info->driver);
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001787 device_del(&info->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788 del_gendisk(info->disk);
1789
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001790 mutex_lock(&idecd_ref_mutex);
1791 put_device(&info->dev);
1792 mutex_unlock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793}
1794
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001795static void ide_cd_release(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796{
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001797 struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001798 struct cdrom_device_info *devinfo = &info->devinfo;
1799 ide_drive_t *drive = info->drive;
1800 struct gendisk *g = info->disk;
1801
Borislav Petkov088b1b82009-01-02 13:34:47 +01001802 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001803
Jesper Juhl6044ec82005-11-07 01:01:32 -08001804 kfree(info->toc);
Akinobu Mita0a0c4112008-03-26 12:09:02 +01001805 if (devinfo->handle == drive)
1806 unregister_cdrom(devinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001807 drive->driver_data = NULL;
1808 blk_queue_prep_rq(drive->queue, NULL);
1809 g->private_data = NULL;
1810 put_disk(g);
1811 kfree(info);
1812}
1813
Russell King4031bbe2006-01-06 11:41:00 +00001814static int ide_cd_probe(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001815
Bartlomiej Zolnierkiewicz7f3c8682009-01-06 17:20:53 +01001816static struct ide_driver ide_cdrom_driver = {
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001817 .gen_driver = {
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001818 .owner = THIS_MODULE,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001819 .name = "ide-cdrom",
1820 .bus = &ide_bus_type,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001821 },
Russell King4031bbe2006-01-06 11:41:00 +00001822 .probe = ide_cd_probe,
1823 .remove = ide_cd_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824 .version = IDECD_VERSION,
Borislav Petkov99384ae2008-07-16 20:33:45 +02001825 .do_request = ide_cd_do_request,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001826#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz79cb3802008-10-17 18:09:13 +02001827 .proc_entries = ide_cd_proc_entries,
1828 .proc_devsets = ide_cd_proc_devsets,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001829#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830};
1831
Al Viro488ca602008-03-02 10:26:23 -05001832static int idecd_open(struct block_device *bdev, fmode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001833{
Al Viro488ca602008-03-02 10:26:23 -05001834 struct cdrom_info *info = ide_cd_get(bdev->bd_disk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001835 int rc = -ENOMEM;
1836
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001837 if (!info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001838 return -ENXIO;
1839
Al Viro488ca602008-03-02 10:26:23 -05001840 rc = cdrom_open(&info->devinfo, bdev, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841
1842 if (rc < 0)
1843 ide_cd_put(info);
1844
1845 return rc;
1846}
1847
Al Viro488ca602008-03-02 10:26:23 -05001848static int idecd_release(struct gendisk *disk, fmode_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001850 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851
Al Viro488ca602008-03-02 10:26:23 -05001852 cdrom_release(&info->devinfo, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853
1854 ide_cd_put(info);
1855
1856 return 0;
1857}
1858
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001859static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1860{
1861 struct packet_command cgc;
1862 char buffer[16];
1863 int stat;
1864 char spindown;
1865
1866 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1867 return -EFAULT;
1868
1869 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1870
1871 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1872 if (stat)
1873 return stat;
1874
1875 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
1876 return cdrom_mode_select(cdi, &cgc);
1877}
1878
1879static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1880{
1881 struct packet_command cgc;
1882 char buffer[16];
1883 int stat;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001884 char spindown;
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001885
1886 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1887
1888 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1889 if (stat)
1890 return stat;
1891
1892 spindown = buffer[11] & 0x0f;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001893 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001894 return -EFAULT;
1895 return 0;
1896}
1897
Al Viro488ca602008-03-02 10:26:23 -05001898static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001899 unsigned int cmd, unsigned long arg)
1900{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001901 struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001902 int err;
1903
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001904 switch (cmd) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001905 case CDROMSETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001906 return idecd_set_spindown(&info->devinfo, arg);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001907 case CDROMGETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001908 return idecd_get_spindown(&info->devinfo, arg);
1909 default:
1910 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001911 }
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001912
Al Viro1bddd9e2008-09-02 17:19:43 -04001913 err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001914 if (err == -EINVAL)
Al Viro488ca602008-03-02 10:26:23 -05001915 err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916
1917 return err;
1918}
1919
1920static int idecd_media_changed(struct gendisk *disk)
1921{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001922 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923 return cdrom_media_changed(&info->devinfo);
1924}
1925
1926static int idecd_revalidate_disk(struct gendisk *disk)
1927{
Borislav Petkov5aeddf92008-10-13 21:39:34 +02001928 struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001929 struct request_sense sense;
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001930
1931 ide_cd_read_toc(info->drive, &sense);
1932
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933 return 0;
1934}
1935
1936static struct block_device_operations idecd_ops = {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001937 .owner = THIS_MODULE,
Al Viro488ca602008-03-02 10:26:23 -05001938 .open = idecd_open,
1939 .release = idecd_release,
1940 .locked_ioctl = idecd_ioctl,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001941 .media_changed = idecd_media_changed,
1942 .revalidate_disk = idecd_revalidate_disk
Linus Torvalds1da177e2005-04-16 15:20:36 -07001943};
1944
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001945/* module options */
Borislav Petkov35d9b172008-10-13 21:39:49 +02001946static unsigned long debug_mask;
1947module_param(debug_mask, ulong, 0644);
1948
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
1950
Russell King4031bbe2006-01-06 11:41:00 +00001951static int ide_cd_probe(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952{
1953 struct cdrom_info *info;
1954 struct gendisk *g;
1955 struct request_sense sense;
1956
Borislav Petkov088b1b82009-01-02 13:34:47 +01001957 ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
1958 drive->driver_req, drive->media);
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001959
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960 if (!strstr("ide-cdrom", drive->driver_req))
1961 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001962
Linus Torvalds1da177e2005-04-16 15:20:36 -07001963 if (drive->media != ide_cdrom && drive->media != ide_optical)
1964 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001965
Borislav Petkov35d9b172008-10-13 21:39:49 +02001966 drive->debug_mask = debug_mask;
Borislav Petkovd6251d42009-01-06 17:20:58 +01001967 drive->irq_handler = cdrom_newpc_intr;
Borislav Petkov35d9b172008-10-13 21:39:49 +02001968
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -08001969 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 if (info == NULL) {
Borislav Petkovfc8323f2008-10-13 21:39:48 +02001971 printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
Borislav Petkov83c85652008-04-26 22:25:15 +02001972 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 goto failed;
1974 }
1975
1976 g = alloc_disk(1 << PARTN_BITS);
1977 if (!g)
1978 goto out_free_cd;
1979
1980 ide_init_disk(g, drive);
1981
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01001982 info->dev.parent = &drive->gendev;
1983 info->dev.release = ide_cd_release;
1984 dev_set_name(&info->dev, dev_name(&drive->gendev));
1985
1986 if (device_register(&info->dev))
1987 goto out_free_disk;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988
1989 info->drive = drive;
1990 info->driver = &ide_cdrom_driver;
1991 info->disk = g;
1992
1993 g->private_data = &info->driver;
1994
1995 drive->driver_data = info;
1996
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997 g->minors = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001998 g->driverfs_dev = &drive->gendev;
1999 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2000 if (ide_cdrom_setup(drive)) {
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01002001 put_device(&info->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002002 goto failed;
2003 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002004
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01002005 ide_cd_read_toc(drive, &sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002006 g->fops = &idecd_ops;
2007 g->flags |= GENHD_FL_REMOVABLE;
2008 add_disk(g);
2009 return 0;
2010
Bartlomiej Zolnierkiewicz8fed4362009-02-25 20:28:24 +01002011out_free_disk:
2012 put_disk(g);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002013out_free_cd:
2014 kfree(info);
2015failed:
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002016 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017}
2018
2019static void __exit ide_cdrom_exit(void)
2020{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002021 driver_unregister(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002022}
Bartlomiej Zolnierkiewicz17514e82005-11-19 22:24:35 +01002023
2024static int __init ide_cdrom_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025{
Borislav Petkovfc8323f2008-10-13 21:39:48 +02002026 printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002027 return driver_register(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028}
2029
Kay Sievers263756e2005-12-12 18:03:44 +01002030MODULE_ALIAS("ide:*m-cdrom*");
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +01002031MODULE_ALIAS("ide-cd");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002032module_init(ide_cdrom_init);
2033module_exit(ide_cdrom_exit);
2034MODULE_LICENSE("GPL");