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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. ;-)
15 * For those wishing to work on this driver, please be sure you download
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +020016 * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI
17 * (SFF-8020i rev 2.6) standards. These documents can be obtained by
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 * anonymous ftp from:
19 * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps
20 * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf
21 *
Bartlomiej Zolnierkiewicz03553352008-02-01 23:09:18 +010022 * For historical changelog please see:
23 * Documentation/ide/ChangeLog.ide-cd.1994-2004
24 */
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
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +020055#define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57#define ide_cd_g(disk) \
58 container_of((disk)->private_data, struct cdrom_info, driver)
59
60static struct cdrom_info *ide_cd_get(struct gendisk *disk)
61{
62 struct cdrom_info *cd = NULL;
63
Arjan van de Vencf8b8972006-03-23 03:00:45 -080064 mutex_lock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 cd = ide_cd_g(disk);
66 if (cd)
67 kref_get(&cd->kref);
Arjan van de Vencf8b8972006-03-23 03:00:45 -080068 mutex_unlock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 return cd;
70}
71
72static void ide_cd_release(struct kref *);
73
74static void ide_cd_put(struct cdrom_info *cd)
75{
Arjan van de Vencf8b8972006-03-23 03:00:45 -080076 mutex_lock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 kref_put(&cd->kref, ide_cd_release);
Arjan van de Vencf8b8972006-03-23 03:00:45 -080078 mutex_unlock(&idecd_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070079}
80
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +020081/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 * Generic packet command support and error handling routines.
83 */
84
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +020085/* Mark that we've seen a media change and invalidate our internal buffers. */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +020086static void cdrom_saw_media_change(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -070087{
Borislav Petkov570f89e2008-07-23 19:56:02 +020088 drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
89 drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090}
91
92static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
93 struct request_sense *sense)
94{
95 int log = 0;
96
Jens Axboe4aff5e22006-08-10 08:44:47 +020097 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 return 0;
99
100 switch (sense->sense_key) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200101 case NO_SENSE:
102 case RECOVERED_ERROR:
103 break;
104 case NOT_READY:
105 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200106 * don't care about tray state messages for e.g. capacity
107 * commands or in-progress or becoming ready
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200108 */
109 if (sense->asc == 0x3a || sense->asc == 0x04)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200111 log = 1;
112 break;
113 case ILLEGAL_REQUEST:
114 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200115 * don't log START_STOP unit with LoEj set, since we cannot
116 * reliably check if drive can auto-close
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200117 */
118 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200120 log = 1;
121 break;
122 case UNIT_ATTENTION:
123 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200124 * Make good and sure we've seen this potential media change.
125 * Some drives (i.e. Creative) fail to present the correct sense
126 * key in the error register.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200127 */
128 cdrom_saw_media_change(drive);
129 break;
130 default:
131 log = 1;
132 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 }
134 return log;
135}
136
Borislav Petkove5e076a2008-04-26 22:25:15 +0200137static void cdrom_analyze_sense_data(ide_drive_t *drive,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 struct request *failed_command,
139 struct request_sense *sense)
140{
Alan Coxdbe217a2006-06-25 05:47:44 -0700141 unsigned long sector;
142 unsigned long bio_sectors;
Alan Coxdbe217a2006-06-25 05:47:44 -0700143 struct cdrom_info *info = drive->driver_data;
144
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 if (!cdrom_log_sense(drive, failed_command, sense))
146 return;
147
148 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200149 * If a read toc is executed for a CD-R or CD-RW medium where the first
150 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
151 * confusing error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 */
153 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
154 if (sense->sense_key == 0x05 && sense->asc == 0x24)
155 return;
156
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200157 /* current error */
158 if (sense->error_code == 0x70) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200159 switch (sense->sense_key) {
Alan Coxdbe217a2006-06-25 05:47:44 -0700160 case MEDIUM_ERROR:
161 case VOLUME_OVERFLOW:
162 case ILLEGAL_REQUEST:
163 if (!sense->valid)
164 break;
165 if (failed_command == NULL ||
166 !blk_fs_request(failed_command))
167 break;
168 sector = (sense->information[0] << 24) |
169 (sense->information[1] << 16) |
170 (sense->information[2] << 8) |
171 (sense->information[3]);
172
Alan Coxdbe217a2006-06-25 05:47:44 -0700173 if (drive->queue->hardsect_size == 2048)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200174 /* device sector size is 2K */
175 sector <<= 2;
Roel Kluineee49292008-04-28 23:44:43 +0200176
177 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200178 sector &= ~(bio_sectors - 1);
Alan Coxdbe217a2006-06-25 05:47:44 -0700179
Alan Coxdbe217a2006-06-25 05:47:44 -0700180 if (sector < get_capacity(info->disk) &&
Borislav Petkove5e076a2008-04-26 22:25:15 +0200181 drive->probed_capacity - sector < 4 * 75)
Alan Coxdbe217a2006-06-25 05:47:44 -0700182 set_capacity(info->disk, sector);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200183 }
184 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +0100186 ide_cd_log_error(drive->name, failed_command, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187}
188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
190 struct request *failed_command)
191{
192 struct cdrom_info *info = drive->driver_data;
193 struct request *rq = &info->request_sense_request;
194
195 if (sense == NULL)
196 sense = &info->sense_data;
197
198 /* stuff the sense request in front of our current request */
FUJITA Tomonoried820f12008-07-15 21:21:45 +0200199 blk_rq_init(NULL, rq);
200 rq->cmd_type = REQ_TYPE_ATA_PC;
201 rq->rq_disk = info->disk;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202
203 rq->data = sense;
204 rq->cmd[0] = GPCMD_REQUEST_SENSE;
Borislav Petkove5e076a2008-04-26 22:25:15 +0200205 rq->cmd[4] = 18;
206 rq->data_len = 18;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
Jens Axboe4aff5e22006-08-10 08:44:47 +0200208 rq->cmd_type = REQ_TYPE_SENSE;
Bartlomiej Zolnierkiewicze8a96aa2008-07-15 21:21:41 +0200209 rq->cmd_flags |= REQ_PREEMPT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
211 /* NOTE! Save the failed command in "rq->buffer" */
212 rq->buffer = (void *) failed_command;
213
FUJITA Tomonori63f5abb2008-07-15 21:21:51 +0200214 ide_do_drive_cmd(drive, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215}
216
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200217static void cdrom_end_request(ide_drive_t *drive, int uptodate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218{
219 struct request *rq = HWGROUP(drive)->rq;
220 int nsectors = rq->hard_cur_sectors;
221
Jens Axboe4aff5e22006-08-10 08:44:47 +0200222 if (blk_sense_request(rq) && uptodate) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 /*
Jens Axboe4aff5e22006-08-10 08:44:47 +0200224 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
225 * failed request
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 */
227 struct request *failed = (struct request *) rq->buffer;
228 struct cdrom_info *info = drive->driver_data;
229 void *sense = &info->sense_data;
230 unsigned long flags;
231
232 if (failed) {
233 if (failed->sense) {
234 sense = failed->sense;
235 failed->sense_len = rq->sense_len;
236 }
Alan Coxdbe217a2006-06-25 05:47:44 -0700237 cdrom_analyze_sense_data(drive, failed, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200239 * now end the failed request
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 */
Alan Coxdbe217a2006-06-25 05:47:44 -0700241 if (blk_fs_request(failed)) {
242 if (ide_end_dequeued_request(drive, failed, 0,
243 failed->hard_nr_sectors))
244 BUG();
245 } else {
246 spin_lock_irqsave(&ide_lock, flags);
Kiyoshi Ueda5e36bb62008-01-28 10:34:20 +0100247 if (__blk_end_request(failed, -EIO,
248 failed->data_len))
249 BUG();
Alan Coxdbe217a2006-06-25 05:47:44 -0700250 spin_unlock_irqrestore(&ide_lock, flags);
251 }
252 } else
253 cdrom_analyze_sense_data(drive, NULL, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 }
255
256 if (!rq->current_nr_sectors && blk_fs_request(rq))
257 uptodate = 1;
258 /* make sure it's fully ended */
259 if (blk_pc_request(rq))
260 nsectors = (rq->data_len + 511) >> 9;
261 if (!nsectors)
262 nsectors = 1;
263
264 ide_end_request(drive, uptodate, nsectors);
265}
266
Borislav Petkov83c85652008-04-26 22:25:15 +0200267static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
Alan Coxdbe217a2006-06-25 05:47:44 -0700268{
Borislav Petkov83c85652008-04-26 22:25:15 +0200269 if (st & 0x80)
Alan Coxdbe217a2006-06-25 05:47:44 -0700270 return;
Borislav Petkov83c85652008-04-26 22:25:15 +0200271 ide_dump_status(drive, msg, st);
Alan Coxdbe217a2006-06-25 05:47:44 -0700272}
273
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200274/*
275 * Returns:
276 * 0: if the request should be continued.
277 * 1: if the request was ended.
278 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
280{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200281 ide_hwif_t *hwif = drive->hwif;
282 struct request *rq = hwif->hwgroup->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 int stat, err, sense_key;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200284
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200285 /* check for errors */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200286 stat = hwif->tp_ops->read_status(hwif);
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +0100287
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 if (stat_ret)
289 *stat_ret = stat;
290
291 if (OK_STAT(stat, good_stat, BAD_R_STAT))
292 return 0;
293
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200294 /* get the IDE error register */
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +0100295 err = ide_read_error(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 sense_key = err >> 4;
297
298 if (rq == NULL) {
Borislav Petkove5e076a2008-04-26 22:25:15 +0200299 printk(KERN_ERR "%s: missing rq in %s\n",
300 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 return 1;
302 }
303
Jens Axboe4aff5e22006-08-10 08:44:47 +0200304 if (blk_sense_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200305 /*
306 * We got an error trying to get sense info from the drive
307 * (probably while trying to recover from a former error).
308 * Just give up.
309 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200310 rq->cmd_flags |= REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 cdrom_end_request(drive, 0);
312 ide_error(drive, "request sense failure", stat);
313 return 1;
314
Jens Axboe8770c012006-10-12 17:24:52 +0200315 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 /* All other functions, except for READ. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317
318 /*
319 * if we have an error, pass back CHECK_CONDITION as the
320 * scsi status byte
321 */
Jens Axboeb7156732006-11-13 18:05:02 +0100322 if (blk_pc_request(rq) && !rq->errors)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 rq->errors = SAM_STAT_CHECK_CONDITION;
324
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200325 /* check for tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 if (sense_key == NOT_READY) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200327 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200329 /* check for media change */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200330 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 return 0;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200332 } else if (sense_key == ILLEGAL_REQUEST &&
333 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
334 /*
335 * Don't print error message for this condition--
336 * SFF8090i indicates that 5/24/00 is the correct
337 * response to a request to close the tray if the
338 * drive doesn't have that capability.
339 * cdrom_log_sense() knows this!
340 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200341 } else if (!(rq->cmd_flags & REQ_QUIET)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200342 /* otherwise, print an error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 ide_dump_status(drive, "packet command error", stat);
344 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200345
Jens Axboe4aff5e22006-08-10 08:44:47 +0200346 rq->cmd_flags |= REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347
348 /*
349 * instead of playing games with moving completions around,
350 * remove failed request completely and end it when the
351 * request sense has completed
352 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100353 goto end_request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354
355 } else if (blk_fs_request(rq)) {
356 int do_end_request = 0;
357
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200358 /* handle errors from READ and WRITE requests */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
360 if (blk_noretry_request(rq))
361 do_end_request = 1;
362
363 if (sense_key == NOT_READY) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200364 /* tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 if (rq_data_dir(rq) == READ) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200366 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200368 /* fail the request */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200369 printk(KERN_ERR "%s: tray open\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 do_end_request = 1;
371 } else {
372 struct cdrom_info *info = drive->driver_data;
373
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200374 /*
375 * Allow the drive 5 seconds to recover, some
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 * devices will return this error while flushing
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200377 * data from cache.
378 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 if (!rq->errors)
Borislav Petkov83c85652008-04-26 22:25:15 +0200380 info->write_timeout = jiffies +
381 ATAPI_WAIT_WRITE_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 rq->errors = 1;
383 if (time_after(jiffies, info->write_timeout))
384 do_end_request = 1;
385 else {
386 unsigned long flags;
387
388 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200389 * take a breather relying on the unplug
390 * timer to kick us again
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 */
392 spin_lock_irqsave(&ide_lock, flags);
393 blk_plug_device(drive->queue);
Borislav Petkov83c85652008-04-26 22:25:15 +0200394 spin_unlock_irqrestore(&ide_lock,
395 flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 return 1;
397 }
398 }
399 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200400 /* media change */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200401 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200403 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200404 * Arrange to retry the request but be sure to give up
405 * if we've retried too many times.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200406 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 if (++rq->errors > ERROR_MAX)
408 do_end_request = 1;
409 } else if (sense_key == ILLEGAL_REQUEST ||
410 sense_key == DATA_PROTECT) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200411 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200412 * No point in retrying after an illegal request or data
413 * protect error.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200414 */
415 ide_dump_status_no_sense(drive, "command error", stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 do_end_request = 1;
417 } else if (sense_key == MEDIUM_ERROR) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200418 /*
419 * No point in re-trying a zillion times on a bad
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200420 * sector. If we got here the error is not correctable.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200421 */
Borislav Petkov83c85652008-04-26 22:25:15 +0200422 ide_dump_status_no_sense(drive,
423 "media error (bad sector)",
424 stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 do_end_request = 1;
426 } else if (sense_key == BLANK_CHECK) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200427 /* disk appears blank ?? */
Borislav Petkov83c85652008-04-26 22:25:15 +0200428 ide_dump_status_no_sense(drive, "media error (blank)",
429 stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 do_end_request = 1;
431 } else if ((err & ~ABRT_ERR) != 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200432 /* go to the default handler for other errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 ide_error(drive, "cdrom_decode_status", stat);
434 return 1;
435 } else if ((++rq->errors > ERROR_MAX)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200436 /* we've racked up too many retries, abort */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 do_end_request = 1;
438 }
439
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200440 /*
441 * End a request through request sense analysis when we have
442 * sense data. We need this in order to perform end of media
443 * processing.
444 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100445 if (do_end_request)
446 goto end_request;
Alan Coxdbe217a2006-06-25 05:47:44 -0700447
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100448 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200449 * If we got a CHECK_CONDITION status, queue
450 * a request sense command.
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100451 */
452 if (stat & ERR_STAT)
453 cdrom_queue_request_sense(drive, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 } else {
455 blk_dump_rq_flags(rq, "ide-cd: bad rq");
456 cdrom_end_request(drive, 0);
457 }
458
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200459 /* retry, or handle the next request */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 return 1;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100461
462end_request:
463 if (stat & ERR_STAT) {
464 unsigned long flags;
465
466 spin_lock_irqsave(&ide_lock, flags);
467 blkdev_dequeue_request(rq);
468 HWGROUP(drive)->rq = NULL;
469 spin_unlock_irqrestore(&ide_lock, flags);
470
471 cdrom_queue_request_sense(drive, rq->sense, rq);
472 } else
473 cdrom_end_request(drive, 0);
474
475 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476}
477
478static int cdrom_timer_expiry(ide_drive_t *drive)
479{
480 struct request *rq = HWGROUP(drive)->rq;
481 unsigned long wait = 0;
482
483 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200484 * Some commands are *slow* and normally take a long time to complete.
485 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
486 * commands/drives support that. Let ide_timer_expiry keep polling us
487 * for these.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 */
489 switch (rq->cmd[0]) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200490 case GPCMD_BLANK:
491 case GPCMD_FORMAT_UNIT:
492 case GPCMD_RESERVE_RZONE_TRACK:
493 case GPCMD_CLOSE_TRACK:
494 case GPCMD_FLUSH_CACHE:
495 wait = ATAPI_WAIT_PC;
496 break;
497 default:
498 if (!(rq->cmd_flags & REQ_QUIET))
Borislav Petkov83c85652008-04-26 22:25:15 +0200499 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n",
500 rq->cmd[0]);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200501 wait = 0;
502 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 }
504 return wait;
505}
506
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200507/*
508 * Set up the device registers for transferring a packet command on DEV,
509 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
510 * which actually transfers the command to the drive. If this is a
511 * drq_interrupt device, this routine will arrange for HANDLER to be
512 * called when the interrupt from the drive arrives. Otherwise, HANDLER
513 * will be called immediately after the drive is prepared for the transfer.
514 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
516 int xferlen,
517 ide_handler_t *handler)
518{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 struct cdrom_info *info = drive->driver_data;
520 ide_hwif_t *hwif = drive->hwif;
521
Bartlomiej Zolnierkiewicz3a6a3542008-01-25 22:17:13 +0100522 /* FIXME: for Virtual DMA we must check harder */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 if (info->dma)
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200524 info->dma = !hwif->dma_ops->dma_setup(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200526 /* set up the controller registers */
Bartlomiej Zolnierkiewicz9a410e72008-07-15 21:21:48 +0200527 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL,
528 xferlen, info->dma);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +0100529
Borislav Petkov570f89e2008-07-23 19:56:02 +0200530 if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
Albert Leef0dd8712007-02-17 02:40:21 +0100531 /* waiting for CDB interrupt, not DMA yet. */
532 if (info->dma)
533 drive->waiting_for_dma = 0;
534
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 /* packet command */
Borislav Petkov83c85652008-04-26 22:25:15 +0200536 ide_execute_command(drive, WIN_PACKETCMD, handler,
537 ATAPI_WAIT_PC, cdrom_timer_expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 return ide_started;
539 } else {
Bartlomiej Zolnierkiewicz1fc14252008-04-28 23:44:39 +0200540 ide_execute_pkt_cmd(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541
542 return (*handler) (drive);
543 }
544}
545
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200546/*
547 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
548 * registers must have already been prepared by cdrom_start_packet_command.
549 * HANDLER is the interrupt handler to call when the command completes or
550 * there's data ready.
551 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552#define ATAPI_MIN_CDB_BYTES 12
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200553static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 struct request *rq,
555 ide_handler_t *handler)
556{
557 ide_hwif_t *hwif = drive->hwif;
558 int cmd_len;
559 struct cdrom_info *info = drive->driver_data;
560 ide_startstop_t startstop;
561
Borislav Petkov570f89e2008-07-23 19:56:02 +0200562 if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200563 /*
564 * Here we should have been called after receiving an interrupt
565 * from the device. DRQ should how be set.
566 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200568 /* check for errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
570 return ide_stopped;
Albert Leef0dd8712007-02-17 02:40:21 +0100571
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200572 /* ok, next interrupt will be DMA interrupt */
Albert Leef0dd8712007-02-17 02:40:21 +0100573 if (info->dma)
574 drive->waiting_for_dma = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200576 /* otherwise, we must wait for DRQ to get set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
578 BUSY_STAT, WAIT_READY))
579 return startstop;
580 }
581
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200582 /* arm the interrupt handler */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
584
585 /* ATAPI commands get padded out to 12 bytes minimum */
586 cmd_len = COMMAND_SIZE(rq->cmd[0]);
587 if (cmd_len < ATAPI_MIN_CDB_BYTES)
588 cmd_len = ATAPI_MIN_CDB_BYTES;
589
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200590 /* send the command to the device */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200591 hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200593 /* start the DMA if need be */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 if (info->dma)
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200595 hwif->dma_ops->dma_start(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
597 return ide_started;
598}
599
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200600/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 * Check the contents of the interrupt reason register from the cdrom
602 * and attempt to recover if there are problems. Returns 0 if everything's
603 * ok; nonzero if the request has been terminated.
604 */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100605static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
606 int len, int ireason, int rw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200608 ide_hwif_t *hwif = drive->hwif;
609
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100610 /*
611 * ireason == 0: the drive wants to receive data from us
612 * ireason == 2: the drive is expecting to transfer data to us
613 */
614 if (ireason == (!rw << 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 return 0;
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100616 else if (ireason == (rw << 1)) {
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100617
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200618 /* whoops... */
Bartlomiej Zolnierkiewicz35379c02007-12-24 15:23:43 +0100619 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200620 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
Borislav Petkovae8789f2008-07-16 20:33:45 +0200622 ide_pad_transfer(drive, rw, len);
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100623 } else if (rw == 0 && ireason == 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200624 /*
625 * Some drives (ASUS) seem to tell us that status info is
626 * available. Just get it and ignore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200628 (void)hwif->tp_ops->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 return 0;
630 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200631 /* drive wants a command packet, or invalid ireason... */
Bartlomiej Zolnierkiewicz35379c02007-12-24 15:23:43 +0100632 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200633 drive->name, __func__, ireason);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 }
635
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100636 if (rq->cmd_type == REQ_TYPE_ATA_PC)
637 rq->cmd_flags |= REQ_FAILED;
638
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 cdrom_end_request(drive, 0);
640 return -1;
641}
642
643/*
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100644 * Assume that the drive will always provide data in multiples of at least
645 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
646 */
647static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
648{
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100649 if ((len % SECTOR_SIZE) == 0)
650 return 0;
651
652 printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200653 drive->name, __func__, len);
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100654
Borislav Petkov570f89e2008-07-23 19:56:02 +0200655 if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100656 printk(KERN_ERR " This drive is not supported by "
657 "this version of the driver\n");
658 else {
659 printk(KERN_ERR " Trying to limit transfer sizes\n");
Borislav Petkov570f89e2008-07-23 19:56:02 +0200660 drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100661 }
662
663 return 1;
664}
665
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100666static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
Bartlomiej Zolnierkiewicz94f5a862008-02-01 23:09:26 +0100667
Borislav Petkov90eb8082008-07-16 20:33:46 +0200668static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
669 struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670{
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100671 if (rq_data_dir(rq) == READ) {
672 unsigned short sectors_per_frame =
673 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
674 int nskip = rq->sector & (sectors_per_frame - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100676 /*
677 * If the requested sector doesn't start on a frame boundary,
678 * we must adjust the start of the transfer so that it does,
679 * and remember to skip the first few sectors.
680 *
681 * If the rq->current_nr_sectors field is larger than the size
682 * of the buffer, it will mean that we're to skip a number of
683 * sectors equal to the amount by which rq->current_nr_sectors
684 * is larger than the buffer size.
685 */
686 if (nskip > 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200687 /* sanity check... */
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100688 if (rq->current_nr_sectors !=
689 bio_cur_sectors(rq->bio)) {
690 printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200691 drive->name, __func__,
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100692 rq->current_nr_sectors);
693 cdrom_end_request(drive, 0);
694 return ide_stopped;
695 }
696 rq->current_nr_sectors += nskip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 }
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100699#if 0
700 else
701 /* the immediate bit */
702 rq->cmd[1] = 1 << 3;
703#endif
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200704 /* set up the command */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 rq->timeout = ATAPI_WAIT_PC;
706
Borislav Petkov90eb8082008-07-16 20:33:46 +0200707 return ide_started;
708}
709
710/*
711 * Routine to send a read/write packet command to the drive. This is usually
712 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
713 * devices, it is called from an interrupt when the drive is ready to accept
714 * the command.
715 */
716static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
717{
718 struct request *rq = drive->hwif->hwgroup->rq;
719
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200720 /* send the command to the drive and return */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100721 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722}
723
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724#define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
725#define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
726#define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
727
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200728static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729{
730 struct cdrom_info *info = drive->driver_data;
731 int stat;
732 static int retry = 10;
733
734 if (cdrom_decode_status(drive, 0, &stat))
735 return ide_stopped;
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +0100736
Borislav Petkov570f89e2008-07-23 19:56:02 +0200737 drive->atapi_flags |= IDE_AFLAG_SEEKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738
739 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200740 if (--retry == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 drive->dsc_overlap = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742 }
743 return ide_stopped;
744}
745
Borislav Petkove529c602008-07-16 20:33:46 +0200746static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748 sector_t frame = rq->sector;
749
750 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
751
FUJITA Tomonorid34c87e2008-04-29 14:37:52 +0200752 memset(rq->cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 rq->cmd[0] = GPCMD_SEEK;
754 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
755
756 rq->timeout = ATAPI_WAIT_PC;
Borislav Petkove529c602008-07-16 20:33:46 +0200757}
758
759static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
760{
761 struct request *rq = drive->hwif->hwgroup->rq;
762
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
764}
765
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200766/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200767 * Fix up a possibly partially-processed request so that we can start it over
768 * entirely, or even put it back on the request queue.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200769 */
770static void restore_request(struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771{
772 if (rq->buffer != bio_data(rq->bio)) {
Borislav Petkov83c85652008-04-26 22:25:15 +0200773 sector_t n =
774 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775
776 rq->buffer = bio_data(rq->bio);
777 rq->nr_sectors += n;
778 rq->sector -= n;
779 }
Borislav Petkov83c85652008-04-26 22:25:15 +0200780 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
781 rq->hard_cur_sectors = rq->current_nr_sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 rq->hard_nr_sectors = rq->nr_sectors;
783 rq->hard_sector = rq->sector;
784 rq->q->prep_rq_fn(rq->q, rq);
785}
786
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200787/*
788 * All other packet commands.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789 */
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100790static void ide_cd_request_sense_fixup(struct request *rq)
791{
792 /*
793 * Some of the trailing request sense fields are optional,
794 * and some drives don't send them. Sigh.
795 */
796 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
797 rq->data_len > 0 && rq->data_len <= 5)
798 while (rq->data_len > 0) {
799 *(u8 *)rq->data++ = 0;
800 --rq->data_len;
801 }
802}
803
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200804int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
805 int write, void *buffer, unsigned *bufflen,
806 struct request_sense *sense, int timeout,
807 unsigned int cmd_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808{
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200809 struct cdrom_info *info = drive->driver_data;
810 struct request_sense local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 int retries = 10;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200812 unsigned int flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200814 if (!sense)
815 sense = &local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200817 /* start of retry loop */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 do {
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200819 struct request *rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200822 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
823
824 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
825 rq->cmd_type = REQ_TYPE_ATA_PC;
826 rq->sense = sense;
827 rq->cmd_flags |= cmd_flags;
828 rq->timeout = timeout;
829 if (buffer) {
830 rq->data = buffer;
831 rq->data_len = *bufflen;
832 }
833
834 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
835
836 if (buffer)
837 *bufflen = rq->data_len;
838
839 flags = rq->cmd_flags;
840 blk_put_request(rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200842 /*
843 * FIXME: we should probably abort/retry or something in case of
844 * failure.
845 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200846 if (flags & REQ_FAILED) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200847 /*
848 * The request failed. Retry if it was due to a unit
849 * attention status (usually means media was changed).
850 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200851 struct request_sense *reqbuf = sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852
853 if (reqbuf->sense_key == UNIT_ATTENTION)
854 cdrom_saw_media_change(drive);
855 else if (reqbuf->sense_key == NOT_READY &&
856 reqbuf->asc == 4 && reqbuf->ascq != 4) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200857 /*
858 * The drive is in the process of loading
859 * a disk. Retry, but wait a little to give
860 * the drive time to complete the load.
861 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 ssleep(2);
863 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200864 /* otherwise, don't retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 retries = 0;
866 }
867 --retries;
868 }
869
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200870 /* end of retry loop */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200871 } while ((flags & REQ_FAILED) && retries >= 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200873 /* return an error if the command failed */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200874 return (flags & REQ_FAILED) ? -EIO : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875}
876
877/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200878 * Called from blk_end_request_callback() after the data of the request is
879 * completed and before the request itself is completed. By returning value '1',
880 * blk_end_request_callback() returns immediately without completing it.
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500881 */
882static int cdrom_newpc_intr_dummy_cb(struct request *rq)
883{
884 return 1;
885}
886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
888{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200889 ide_hwif_t *hwif = drive->hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 struct cdrom_info *info = drive->driver_data;
891 struct request *rq = HWGROUP(drive)->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 xfer_func_t *xferfunc;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100893 ide_expiry_t *expiry = NULL;
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200894 int dma_error = 0, dma, stat, thislen, uptodate = 0;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100895 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
896 unsigned int timeout;
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200897 u16 len;
898 u8 ireason;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200900 /* check for errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 dma = info->dma;
902 if (dma) {
903 info->dma = 0;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200904 dma_error = hwif->dma_ops->dma_end(drive);
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100905 if (dma_error) {
906 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100907 write ? "write" : "read");
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100908 ide_dma_off(drive);
909 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 }
911
912 if (cdrom_decode_status(drive, 0, &stat))
913 return ide_stopped;
914
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200915 /* using dma, transfer is complete now */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 if (dma) {
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100917 if (dma_error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 return ide_error(drive, "dma error", stat);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100919 if (blk_fs_request(rq)) {
920 ide_end_request(drive, 1, rq->nr_sectors);
921 return ide_stopped;
922 }
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100923 goto end_request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 }
925
Bartlomiej Zolnierkiewicz18236492008-07-23 19:55:54 +0200926 ide_read_bcount_and_ireason(drive, &len, &ireason);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100927
928 thislen = blk_fs_request(rq) ? len : rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929 if (thislen > len)
930 thislen = len;
931
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200932 /* If DRQ is clear, the command has completed. */
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500933 if ((stat & DRQ_STAT) == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100934 if (blk_fs_request(rq)) {
935 /*
936 * If we're not done reading/writing, complain.
937 * Otherwise, complete the command normally.
938 */
939 uptodate = 1;
940 if (rq->current_nr_sectors > 0) {
941 printk(KERN_ERR "%s: %s: data underrun "
942 "(%d blocks)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200943 drive->name, __func__,
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100944 rq->current_nr_sectors);
945 if (!write)
946 rq->cmd_flags |= REQ_FAILED;
947 uptodate = 0;
948 }
949 cdrom_end_request(drive, uptodate);
950 return ide_stopped;
951 } else if (!blk_pc_request(rq)) {
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100952 ide_cd_request_sense_fixup(rq);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200953 /* complain if we still have data left to transfer */
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100954 uptodate = rq->data_len ? 0 : 1;
955 }
956 goto end_request;
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500957 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200959 /* check which way to transfer data */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100960 if (ide_cd_check_ireason(drive, rq, len, ireason, write))
961 return ide_stopped;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100962
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100963 if (blk_fs_request(rq)) {
964 if (write == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100965 int nskip;
966
967 if (ide_cd_check_transfer_size(drive, len)) {
968 cdrom_end_request(drive, 0);
969 return ide_stopped;
970 }
971
972 /*
973 * First, figure out if we need to bit-bucket
974 * any of the leading sectors.
975 */
976 nskip = min_t(int, rq->current_nr_sectors
977 - bio_cur_sectors(rq->bio),
978 thislen >> 9);
979 if (nskip > 0) {
Borislav Petkovae8789f2008-07-16 20:33:45 +0200980 ide_pad_transfer(drive, write, nskip << 9);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100981 rq->current_nr_sectors -= nskip;
982 thislen -= (nskip << 9);
983 }
984 }
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100985 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100987 if (ireason == 0) {
988 write = 1;
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200989 xferfunc = hwif->tp_ops->output_data;
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100990 } else {
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100991 write = 0;
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200992 xferfunc = hwif->tp_ops->input_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993 }
994
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200995 /* transfer data */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996 while (thislen > 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100997 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
Bartlomiej Zolnierkiewicza11e77d2008-02-01 23:09:27 +0100998 int blen = rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001000 /* bio backed? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 if (rq->bio) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001002 if (blk_fs_request(rq)) {
1003 ptr = rq->buffer;
1004 blen = rq->current_nr_sectors << 9;
1005 } else {
1006 ptr = bio_data(rq->bio);
1007 blen = bio_iovec(rq->bio)->bv_len;
1008 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 }
1010
1011 if (!ptr) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001012 if (blk_fs_request(rq) && !write)
1013 /*
Borislav Petkov968c4962008-04-26 17:36:37 +02001014 * If the buffers are full, pipe the rest into
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001015 * oblivion.
1016 */
Borislav Petkovae8789f2008-07-16 20:33:45 +02001017 ide_pad_transfer(drive, 0, thislen);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001018 else {
1019 printk(KERN_ERR "%s: confused, missing data\n",
1020 drive->name);
1021 blk_dump_rq_flags(rq, rq_data_dir(rq)
1022 ? "cdrom_newpc_intr, write"
1023 : "cdrom_newpc_intr, read");
1024 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 break;
1026 }
1027
1028 if (blen > thislen)
1029 blen = thislen;
1030
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +02001031 xferfunc(drive, NULL, ptr, blen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032
1033 thislen -= blen;
1034 len -= blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001036 if (blk_fs_request(rq)) {
1037 rq->buffer += blen;
1038 rq->nr_sectors -= (blen >> 9);
1039 rq->current_nr_sectors -= (blen >> 9);
1040 rq->sector += (blen >> 9);
1041
1042 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1043 cdrom_end_request(drive, 1);
1044 } else {
1045 rq->data_len -= blen;
1046
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -05001047 /*
1048 * The request can't be completed until DRQ is cleared.
1049 * So complete the data, but don't complete the request
1050 * using the dummy function for the callback feature
1051 * of blk_end_request_callback().
1052 */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001053 if (rq->bio)
1054 blk_end_request_callback(rq, 0, blen,
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -05001055 cdrom_newpc_intr_dummy_cb);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001056 else
1057 rq->data += blen;
1058 }
Andreas Schwabbcd88ac2008-02-26 21:50:35 +01001059 if (!write && blk_sense_request(rq))
1060 rq->sense_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061 }
1062
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001063 /* pad, if necessary */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001064 if (!blk_fs_request(rq) && len > 0)
Borislav Petkovae8789f2008-07-16 20:33:45 +02001065 ide_pad_transfer(drive, write, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001067 if (blk_pc_request(rq)) {
1068 timeout = rq->timeout;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001069 } else {
1070 timeout = ATAPI_WAIT_PC;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001071 if (!blk_fs_request(rq))
1072 expiry = cdrom_timer_expiry;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001073 }
1074
1075 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076 return ide_started;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001077
1078end_request:
1079 if (blk_pc_request(rq)) {
1080 unsigned long flags;
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +01001081 unsigned int dlen = rq->data_len;
1082
1083 if (dma)
1084 rq->data_len = 0;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001085
1086 spin_lock_irqsave(&ide_lock, flags);
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +01001087 if (__blk_end_request(rq, 0, dlen))
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001088 BUG();
1089 HWGROUP(drive)->rq = NULL;
1090 spin_unlock_irqrestore(&ide_lock, flags);
1091 } else {
1092 if (!uptodate)
1093 rq->cmd_flags |= REQ_FAILED;
1094 cdrom_end_request(drive, uptodate);
1095 }
1096 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097}
1098
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001099static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100{
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001101 struct cdrom_info *cd = drive->driver_data;
1102 int write = rq_data_dir(rq) == WRITE;
1103 unsigned short sectors_per_frame =
1104 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1105
1106 if (write) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001107 /* disk has become write protected */
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001108 if (cd->disk->policy) {
1109 cdrom_end_request(drive, 0);
1110 return ide_stopped;
1111 }
1112 } else {
1113 /*
1114 * We may be retrying this request after an error. Fix up any
1115 * weirdness which might be present in the request packet.
1116 */
1117 restore_request(rq);
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001118 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001120 /* use DMA, if possible / writes *must* be hardware frame aligned */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1122 (rq->sector & (sectors_per_frame - 1))) {
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001123 if (write) {
1124 cdrom_end_request(drive, 0);
1125 return ide_stopped;
1126 }
1127 cd->dma = 0;
1128 } else
1129 cd->dma = drive->using_dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001131 if (write)
1132 cd->devinfo.media_written = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001134 return ide_started;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135}
1136
1137static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1138{
1139 struct request *rq = HWGROUP(drive)->rq;
1140
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1142}
1143
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001144static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145{
1146 struct cdrom_info *info = drive->driver_data;
1147
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001148 if (blk_pc_request(rq))
1149 rq->cmd_flags |= REQ_QUIET;
1150 else
1151 rq->cmd_flags &= ~REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152
1153 info->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001155 /* sg request */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001156 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
1157 struct request_queue *q = drive->queue;
1158 unsigned int alignment;
1159 unsigned long addr;
FUJITA Tomonori0b6abc12008-07-16 20:33:35 +02001160 unsigned long stack_mask = ~(THREAD_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001161
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001162 if (rq->bio)
1163 addr = (unsigned long)bio_data(rq->bio);
1164 else
1165 addr = (unsigned long)rq->data;
1166
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167 info->dma = drive->using_dma;
1168
1169 /*
1170 * check if dma is safe
Linus Torvalds5d9e4ea2005-05-27 07:36:17 -07001171 *
1172 * NOTE! The "len" and "addr" checks should possibly have
1173 * separate masks.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174 */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001175 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
1176 if (addr & alignment || rq->data_len & alignment)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177 info->dma = 0;
FUJITA Tomonori0b6abc12008-07-16 20:33:35 +02001178
1179 if (!((addr & stack_mask) ^
1180 ((unsigned long)current->stack & stack_mask)))
1181 info->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001183}
1184
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001185/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001186 * cdrom driver request routine.
1187 */
Borislav Petkov99384ae2008-07-16 20:33:45 +02001188static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
Borislav Petkove5e076a2008-04-26 22:25:15 +02001189 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191 struct cdrom_info *info = drive->driver_data;
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001192 ide_handler_t *fn;
1193 int xferlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194
1195 if (blk_fs_request(rq)) {
Borislav Petkov570f89e2008-07-23 19:56:02 +02001196 if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +02001197 ide_hwif_t *hwif = drive->hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198 unsigned long elapsed = jiffies - info->start_seek;
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +02001199 int stat = hwif->tp_ops->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200
1201 if ((stat & SEEK_STAT) != SEEK_STAT) {
1202 if (elapsed < IDECD_SEEK_TIMEOUT) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001203 ide_stall_queue(drive,
1204 IDECD_SEEK_TIMER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205 return ide_stopped;
1206 }
Borislav Petkov83c85652008-04-26 22:25:15 +02001207 printk(KERN_ERR "%s: DSC timeout\n",
1208 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209 }
Borislav Petkov570f89e2008-07-23 19:56:02 +02001210 drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211 }
Borislav Petkov83c85652008-04-26 22:25:15 +02001212 if (rq_data_dir(rq) == READ &&
1213 IDE_LARGE_SEEK(info->last_block, block,
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001214 IDECD_SEEK_THRESHOLD) &&
1215 drive->dsc_overlap) {
1216 xferlen = 0;
1217 fn = cdrom_start_seek_continuation;
Borislav Petkove529c602008-07-16 20:33:46 +02001218
Borislav Petkov4b01fcb2008-07-16 20:33:46 +02001219 info->dma = 0;
1220 info->start_seek = jiffies;
Borislav Petkove529c602008-07-16 20:33:46 +02001221
1222 ide_cd_prepare_seek_request(drive, rq);
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001223 } else {
1224 xferlen = 32768;
1225 fn = cdrom_start_rw_cont;
Borislav Petkov90eb8082008-07-16 20:33:46 +02001226
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001227 if (cdrom_start_rw(drive, rq) == ide_stopped)
1228 return ide_stopped;
Borislav Petkov90eb8082008-07-16 20:33:46 +02001229
1230 if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
1231 return ide_stopped;
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001232 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233 info->last_block = block;
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001234 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
Jens Axboecea28852006-10-12 15:08:45 +02001235 rq->cmd_type == REQ_TYPE_ATA_PC) {
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001236 xferlen = rq->data_len;
1237 fn = cdrom_do_newpc_cont;
Borislav Petkov7fcebda2008-07-16 20:33:46 +02001238
1239 if (!rq->timeout)
1240 rq->timeout = ATAPI_WAIT_PC;
1241
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001242 cdrom_do_block_pc(drive, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001243 } else if (blk_special_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001244 /* right now this can only be a reset... */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245 cdrom_end_request(drive, 1);
1246 return ide_stopped;
Borislav Petkovab9d6e32008-07-16 20:33:45 +02001247 } else {
1248 blk_dump_rq_flags(rq, "ide-cd bad flags");
1249 cdrom_end_request(drive, 0);
1250 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 }
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001252
1253 return cdrom_start_packet_command(drive, xferlen, fn);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254}
1255
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001256/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257 * Ioctl handling.
1258 *
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001259 * Routines which queue packet commands take as a final argument a pointer to a
1260 * request_sense struct. If execution of the command results in an error with a
1261 * CHECK CONDITION status, this structure will be filled with the results of the
1262 * subsequent request sense command. The pointer can also be NULL, in which case
1263 * no sense information is returned.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264 */
Borislav Petkove5e076a2008-04-26 22:25:15 +02001265static void msf_from_bcd(struct atapi_msf *msf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266{
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001267 msf->minute = BCD2BIN(msf->minute);
1268 msf->second = BCD2BIN(msf->second);
1269 msf->frame = BCD2BIN(msf->frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270}
1271
Borislav Petkovf9afd182008-02-01 23:09:29 +01001272int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274 struct cdrom_info *info = drive->driver_data;
1275 struct cdrom_device_info *cdi = &info->devinfo;
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001276 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001278 memset(cmd, 0, BLK_MAX_CDB);
1279 cmd[0] = GPCMD_TEST_UNIT_READY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001281 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001282 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1283 * instead of supporting the LOAD_UNLOAD opcode.
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001284 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001285 cmd[7] = cdi->sanyo_slot % 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001287 return ide_cd_queue_pc(drive, cmd, 0, NULL, 0, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288}
1289
Linus Torvalds1da177e2005-04-16 15:20:36 -07001290static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1291 unsigned long *sectors_per_frame,
1292 struct request_sense *sense)
1293{
1294 struct {
1295 __u32 lba;
1296 __u32 blocklen;
1297 } capbuf;
1298
1299 int stat;
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001300 unsigned char cmd[BLK_MAX_CDB];
1301 unsigned len = sizeof(capbuf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001303 memset(cmd, 0, BLK_MAX_CDB);
1304 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001305
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001306 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1307 REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308 if (stat == 0) {
1309 *capacity = 1 + be32_to_cpu(capbuf.lba);
1310 *sectors_per_frame =
1311 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1312 }
1313
1314 return stat;
1315}
1316
1317static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1318 int format, char *buf, int buflen,
1319 struct request_sense *sense)
1320{
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001321 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001323 memset(cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001325 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1326 cmd[6] = trackno;
1327 cmd[7] = (buflen >> 8);
1328 cmd[8] = (buflen & 0xff);
1329 cmd[9] = (format << 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330
1331 if (msf_flag)
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001332 cmd[1] = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001334 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335}
1336
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337/* Try to read the entire TOC for the disk into our internal buffer. */
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001338int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339{
1340 int stat, ntracks, i;
1341 struct cdrom_info *info = drive->driver_data;
1342 struct cdrom_device_info *cdi = &info->devinfo;
1343 struct atapi_toc *toc = info->toc;
1344 struct {
1345 struct atapi_toc_header hdr;
1346 struct atapi_toc_entry ent;
1347 } ms_tmp;
1348 long last_written;
1349 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1350
1351 if (toc == NULL) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001352 /* try to allocate space */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001353 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354 if (toc == NULL) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001355 printk(KERN_ERR "%s: No cdrom TOC buffer!\n",
1356 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357 return -ENOMEM;
1358 }
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001359 info->toc = toc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360 }
1361
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001362 /*
1363 * Check to see if the existing data is still valid. If it is,
1364 * just return.
1365 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366 (void) cdrom_check_status(drive, sense);
1367
Borislav Petkov570f89e2008-07-23 19:56:02 +02001368 if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369 return 0;
1370
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001371 /* try to get the total cdrom capacity and sector size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372 stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
1373 sense);
1374 if (stat)
1375 toc->capacity = 0x1fffff;
1376
1377 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001378 /* save a private copy of the TOC capacity for error handling */
Alan Coxdbe217a2006-06-25 05:47:44 -07001379 drive->probed_capacity = toc->capacity * sectors_per_frame;
1380
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381 blk_queue_hardsect_size(drive->queue,
1382 sectors_per_frame << SECTOR_BITS);
1383
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001384 /* first read just the header, so we know how long the TOC is */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1386 sizeof(struct atapi_toc_header), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001387 if (stat)
1388 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389
Borislav Petkov570f89e2008-07-23 19:56:02 +02001390 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001391 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1392 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001394
1395 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1396 if (ntracks <= 0)
1397 return -EIO;
1398 if (ntracks > MAX_TRACKS)
1399 ntracks = MAX_TRACKS;
1400
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001401 /* now read the whole schmeer */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1403 (char *)&toc->hdr,
1404 sizeof(struct atapi_toc_header) +
1405 (ntracks + 1) *
1406 sizeof(struct atapi_toc_entry), sense);
1407
1408 if (stat && toc->hdr.first_track > 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001409 /*
1410 * Cds with CDI tracks only don't have any TOC entries, despite
1411 * of this the returned values are
1412 * first_track == last_track = number of CDI tracks + 1,
1413 * so that this case is indistinguishable from the same layout
1414 * plus an additional audio track. If we get an error for the
1415 * regular case, we assume a CDI without additional audio
1416 * tracks. In this case the readable TOC is empty (CDI tracks
1417 * are not included) and only holds the Leadout entry.
1418 *
1419 * Heiko Eißfeldt.
1420 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 ntracks = 0;
1422 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1423 (char *)&toc->hdr,
1424 sizeof(struct atapi_toc_header) +
1425 (ntracks + 1) *
1426 sizeof(struct atapi_toc_entry),
1427 sense);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001428 if (stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 return stat;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001430
Borislav Petkov570f89e2008-07-23 19:56:02 +02001431 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001432 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1433 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001434 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435 toc->hdr.first_track = CDROM_LEADOUT;
1436 toc->hdr.last_track = CDROM_LEADOUT;
1437 }
1438 }
1439
1440 if (stat)
1441 return stat;
1442
Borislav Petkov7eb43fd2008-02-11 00:32:13 +01001443 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001444
Borislav Petkov570f89e2008-07-23 19:56:02 +02001445 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001446 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1447 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001450 for (i = 0; i <= ntracks; i++) {
Borislav Petkov570f89e2008-07-23 19:56:02 +02001451 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
1452 if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001453 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001454 msf_from_bcd(&toc->ent[i].addr.msf);
1455 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001456 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1457 toc->ent[i].addr.msf.second,
1458 toc->ent[i].addr.msf.frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459 }
1460
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461 if (toc->hdr.first_track != CDROM_LEADOUT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001462 /* read the multisession information */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1464 sizeof(ms_tmp), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001465 if (stat)
1466 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467
1468 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1469 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +02001470 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1471 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1473 }
1474
Borislav Petkov570f89e2008-07-23 19:56:02 +02001475 if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001476 /* re-read multisession information using MSF format */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1478 sizeof(ms_tmp), sense);
1479 if (stat)
1480 return stat;
1481
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001482 msf_from_bcd(&ms_tmp.ent.addr.msf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001483 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001484 ms_tmp.ent.addr.msf.second,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 ms_tmp.ent.addr.msf.frame);
1486 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487
1488 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1489
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001490 /* now try to get the total cdrom capacity */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 stat = cdrom_get_last_written(cdi, &last_written);
1492 if (!stat && (last_written > toc->capacity)) {
1493 toc->capacity = last_written;
1494 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Alan Coxdbe217a2006-06-25 05:47:44 -07001495 drive->probed_capacity = toc->capacity * sectors_per_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 }
1497
1498 /* Remember that we've read this stuff. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001499 drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500
1501 return 0;
1502}
1503
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001504int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001505{
1506 struct cdrom_info *info = drive->driver_data;
1507 struct cdrom_device_info *cdi = &info->devinfo;
1508 struct packet_command cgc;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001509 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001510
Borislav Petkov570f89e2008-07-23 19:56:02 +02001511 if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001512 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001513
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001514 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001515 do {
1516 /* we seem to get stat=0x01,err=0x00 the first time (??) */
Eric Piel9235e682005-06-23 00:10:29 -07001517 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1518 if (!stat)
1519 break;
1520 } while (--attempts);
1521 return stat;
1522}
1523
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001524void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001525{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001526 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001527 u16 curspeed, maxspeed;
1528
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001529 curspeed = *(u16 *)&buf[8 + 14];
1530 maxspeed = *(u16 *)&buf[8 + 8];
1531
Borislav Petkov570f89e2008-07-23 19:56:02 +02001532 if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001533 curspeed = le16_to_cpu(curspeed);
1534 maxspeed = le16_to_cpu(maxspeed);
Eric Piel9235e682005-06-23 00:10:29 -07001535 } else {
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001536 curspeed = be16_to_cpu(curspeed);
1537 maxspeed = be16_to_cpu(maxspeed);
Eric Piel9235e682005-06-23 00:10:29 -07001538 }
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001539
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001540 cd->current_speed = (curspeed + (176/2)) / 176;
1541 cd->max_speed = (maxspeed + (176/2)) / 176;
Eric Piel9235e682005-06-23 00:10:29 -07001542}
1543
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001544#define IDE_CD_CAPABILITIES \
1545 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1546 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1547 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1548 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1549 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001550
Linus Torvalds1da177e2005-04-16 15:20:36 -07001551static struct cdrom_device_ops ide_cdrom_dops = {
1552 .open = ide_cdrom_open_real,
1553 .release = ide_cdrom_release_real,
1554 .drive_status = ide_cdrom_drive_status,
1555 .media_changed = ide_cdrom_check_media_change_real,
1556 .tray_move = ide_cdrom_tray_move,
1557 .lock_door = ide_cdrom_lock_door,
1558 .select_speed = ide_cdrom_select_speed,
1559 .get_last_session = ide_cdrom_get_last_session,
1560 .get_mcn = ide_cdrom_get_mcn,
1561 .reset = ide_cdrom_reset,
1562 .audio_ioctl = ide_cdrom_audio_ioctl,
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001563 .capability = IDE_CD_CAPABILITIES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564 .generic_packet = ide_cdrom_packet,
1565};
1566
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001567static int ide_cdrom_register(ide_drive_t *drive, int nslots)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568{
1569 struct cdrom_info *info = drive->driver_data;
1570 struct cdrom_device_info *devinfo = &info->devinfo;
1571
1572 devinfo->ops = &ide_cdrom_dops;
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001573 devinfo->speed = info->current_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574 devinfo->capacity = nslots;
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001575 devinfo->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576 strcpy(devinfo->name, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577
Borislav Petkov570f89e2008-07-23 19:56:02 +02001578 if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
Bartlomiej Zolnierkiewicz3cbd8142007-12-24 15:23:43 +01001579 devinfo->mask |= CDC_SELECT_SPEED;
1580
Linus Torvalds1da177e2005-04-16 15:20:36 -07001581 devinfo->disk = info->disk;
1582 return register_cdrom(devinfo);
1583}
1584
Borislav Petkove5e076a2008-04-26 22:25:15 +02001585static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001587 struct cdrom_info *cd = drive->driver_data;
1588 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001589 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1590 mechtype_t mechtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591 int nslots = 1;
1592
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001593 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1594 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1595 CDC_MO_DRIVE | CDC_RAM);
1596
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597 if (drive->media == ide_optical) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001598 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
Borislav Petkov83c85652008-04-26 22:25:15 +02001599 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n",
1600 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001601 return nslots;
1602 }
1603
Borislav Petkov570f89e2008-07-23 19:56:02 +02001604 if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
1605 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001606 cdi->mask &= ~CDC_PLAY_AUDIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001607 return nslots;
1608 }
1609
1610 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001611 * We have to cheat a little here. the packet will eventually be queued
1612 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1613 * Since this device hasn't been registered with the Uniform layer yet,
1614 * it can't do this. Same goes for cdi->ops.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001615 */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001616 cdi->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617 cdi->ops = &ide_cdrom_dops;
1618
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001619 if (ide_cdrom_get_capabilities(drive, buf))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620 return 0;
1621
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001622 if ((buf[8 + 6] & 0x01) == 0)
Borislav Petkov570f89e2008-07-23 19:56:02 +02001623 drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001624 if (buf[8 + 6] & 0x08)
Borislav Petkov570f89e2008-07-23 19:56:02 +02001625 drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001626 if (buf[8 + 3] & 0x01)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001627 cdi->mask &= ~CDC_CD_R;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001628 if (buf[8 + 3] & 0x02)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001629 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001630 if (buf[8 + 2] & 0x38)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001631 cdi->mask &= ~CDC_DVD;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001632 if (buf[8 + 3] & 0x20)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001633 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001634 if (buf[8 + 3] & 0x10)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001635 cdi->mask &= ~CDC_DVD_R;
Borislav Petkov570f89e2008-07-23 19:56:02 +02001636 if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001637 cdi->mask &= ~CDC_PLAY_AUDIO;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001638
1639 mechtype = buf[8 + 6] >> 5;
1640 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001641 cdi->mask |= CDC_CLOSE_TRAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642
Linus Torvalds1da177e2005-04-16 15:20:36 -07001643 if (cdi->sanyo_slot > 0) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001644 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001645 nslots = 3;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001646 } else if (mechtype == mechtype_individual_changer ||
1647 mechtype == mechtype_cartridge_changer) {
Bartlomiej Zolnierkiewicz2609d062008-02-01 23:09:19 +01001648 nslots = cdrom_number_of_slots(cdi);
1649 if (nslots > 1)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001650 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651 }
1652
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001653 ide_cdrom_update_speed(drive, buf);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001654
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655 printk(KERN_INFO "%s: ATAPI", drive->name);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001656
1657 /* don't print speed if the drive reported 0 */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001658 if (cd->max_speed)
1659 printk(KERN_CONT " %dX", cd->max_speed);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001660
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001661 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001662
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001663 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1664 printk(KERN_CONT " DVD%s%s",
1665 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1666 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001667
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001668 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1669 printk(KERN_CONT " CD%s%s",
1670 (cdi->mask & CDC_CD_R) ? "" : "-R",
1671 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001673 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1674 printk(KERN_CONT " changer w/%d slots", nslots);
1675 else
1676 printk(KERN_CONT " drive");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001677
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001678 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001679
1680 return nslots;
1681}
1682
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001683/* standard prep_rq_fn that builds 10 byte cmds */
Jens Axboe165125e2007-07-24 09:28:11 +02001684static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685{
1686 int hard_sect = queue_hardsect_size(q);
1687 long block = (long)rq->hard_sector / (hard_sect >> 9);
1688 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1689
FUJITA Tomonorid34c87e2008-04-29 14:37:52 +02001690 memset(rq->cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691
1692 if (rq_data_dir(rq) == READ)
1693 rq->cmd[0] = GPCMD_READ_10;
1694 else
1695 rq->cmd[0] = GPCMD_WRITE_10;
1696
1697 /*
1698 * fill in lba
1699 */
1700 rq->cmd[2] = (block >> 24) & 0xff;
1701 rq->cmd[3] = (block >> 16) & 0xff;
1702 rq->cmd[4] = (block >> 8) & 0xff;
1703 rq->cmd[5] = block & 0xff;
1704
1705 /*
1706 * and transfer length
1707 */
1708 rq->cmd[7] = (blocks >> 8) & 0xff;
1709 rq->cmd[8] = blocks & 0xff;
1710 rq->cmd_len = 10;
1711 return BLKPREP_OK;
1712}
1713
1714/*
1715 * Most of the SCSI commands are supported directly by ATAPI devices.
1716 * This transform handles the few exceptions.
1717 */
1718static int ide_cdrom_prep_pc(struct request *rq)
1719{
1720 u8 *c = rq->cmd;
1721
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001722 /* transform 6-byte read/write commands to the 10-byte version */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723 if (c[0] == READ_6 || c[0] == WRITE_6) {
1724 c[8] = c[4];
1725 c[5] = c[3];
1726 c[4] = c[2];
1727 c[3] = c[1] & 0x1f;
1728 c[2] = 0;
1729 c[1] &= 0xe0;
1730 c[0] += (READ_10 - READ_6);
1731 rq->cmd_len = 10;
1732 return BLKPREP_OK;
1733 }
1734
1735 /*
1736 * it's silly to pretend we understand 6-byte sense commands, just
1737 * reject with ILLEGAL_REQUEST and the caller should take the
1738 * appropriate action
1739 */
1740 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1741 rq->errors = ILLEGAL_REQUEST;
1742 return BLKPREP_KILL;
1743 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001744
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745 return BLKPREP_OK;
1746}
1747
Jens Axboe165125e2007-07-24 09:28:11 +02001748static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001749{
Jens Axboe4aff5e22006-08-10 08:44:47 +02001750 if (blk_fs_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751 return ide_cdrom_prep_fs(q, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001752 else if (blk_pc_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753 return ide_cdrom_prep_pc(rq);
1754
1755 return 0;
1756}
1757
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001758struct cd_list_entry {
1759 const char *id_model;
1760 const char *id_firmware;
1761 unsigned int cd_flags;
1762};
1763
Borislav Petkov5e657a92008-04-26 22:25:15 +02001764#ifdef CONFIG_IDE_PROC_FS
1765static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1766{
1767 unsigned long capacity, sectors_per_frame;
1768
1769 if (cdrom_read_capacity(drive, &capacity, &sectors_per_frame, NULL))
1770 return 0;
1771
1772 return capacity * sectors_per_frame;
1773}
1774
Borislav Petkove5e076a2008-04-26 22:25:15 +02001775static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1776 int count, int *eof, void *data)
Borislav Petkov5e657a92008-04-26 22:25:15 +02001777{
1778 ide_drive_t *drive = data;
1779 int len;
1780
1781 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1782 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1783}
1784
1785static ide_proc_entry_t idecd_proc[] = {
1786 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1787 { NULL, 0, NULL, NULL }
1788};
1789
1790static void ide_cdrom_add_settings(ide_drive_t *drive)
1791{
1792 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
1793 &drive->dsc_overlap, NULL);
1794}
1795#else
1796static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
1797#endif
1798
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001799static const struct cd_list_entry ide_cd_quirks_list[] = {
1800 /* Limit transfer size per interrupt. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001801 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES },
1802 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001803 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001804 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001805 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001806 { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
1807 IDE_AFLAG_PRE_ATAPI12, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001808 /* Vertos 300, some versions of this drive like to talk BCD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001809 { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001810 /* Vertos 600 ESD. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001811 { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001812 /*
1813 * Sanyo 3 CD changer uses a non-standard command for CD changing
1814 * (by default standard ATAPI support for CD changers is used).
1815 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001816 { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
1817 { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
1818 { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001819 /* Stingray 8X CD-ROM. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001820 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001821 /*
1822 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1823 * mode sense page capabilities size, but older drives break.
1824 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001825 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
1826 { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001827 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001828 { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001829 /*
1830 * Some drives used by Apple don't advertise audio play
1831 * but they do support reading TOC & audio datas.
1832 */
Borislav Petkov570f89e2008-07-23 19:56:02 +02001833 { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1834 { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1835 { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1836 { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
1837 { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001838 { NULL, NULL, 0 }
1839};
1840
1841static unsigned int ide_cd_flags(struct hd_driveid *id)
1842{
1843 const struct cd_list_entry *cle = ide_cd_quirks_list;
1844
1845 while (cle->id_model) {
1846 if (strcmp(cle->id_model, id->model) == 0 &&
1847 (cle->id_firmware == NULL ||
1848 strstr(id->fw_rev, cle->id_firmware)))
1849 return cle->cd_flags;
1850 cle++;
1851 }
1852
1853 return 0;
1854}
1855
Borislav Petkove5e076a2008-04-26 22:25:15 +02001856static int ide_cdrom_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001858 struct cdrom_info *cd = drive->driver_data;
1859 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001860 struct hd_driveid *id = drive->id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861 int nslots;
1862
1863 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1864 blk_queue_dma_alignment(drive->queue, 31);
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001865 blk_queue_update_dma_pad(drive->queue, 15);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001866 drive->queue->unplug_delay = (1 * HZ) / 1000;
1867 if (!drive->queue->unplug_delay)
1868 drive->queue->unplug_delay = 1;
1869
1870 drive->special.all = 0;
1871
Borislav Petkov570f89e2008-07-23 19:56:02 +02001872 drive->atapi_flags = IDE_AFLAG_MEDIA_CHANGED | IDE_AFLAG_NO_EJECT |
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001873 ide_cd_flags(id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001874
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001875 if ((id->config & 0x0060) == 0x20)
Borislav Petkov570f89e2008-07-23 19:56:02 +02001876 drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
Bartlomiej Zolnierkiewiczb8d25de2008-02-01 23:09:19 +01001877
Borislav Petkov570f89e2008-07-23 19:56:02 +02001878 if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001879 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001880 drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
1881 IDE_AFLAG_TOCADDR_AS_BCD);
1882 else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001883 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
Borislav Petkov570f89e2008-07-23 19:56:02 +02001884 drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
1885 else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001886 /* 3 => use CD in slot 0 */
1887 cdi->sanyo_slot = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001888
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001889 nslots = ide_cdrom_probe_capabilities(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001891 /* set correct block size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001892 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1893
Bartlomiej Zolnierkiewiczcc121752008-04-27 15:38:24 +02001894 drive->dsc_overlap = (drive->next != drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001895
1896 if (ide_cdrom_register(drive, nslots)) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001897 printk(KERN_ERR "%s: %s failed to register device with the"
1898 " cdrom driver.\n", drive->name, __func__);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001899 cd->devinfo.handle = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001900 return 1;
1901 }
1902 ide_cdrom_add_settings(drive);
1903 return 0;
1904}
1905
Russell King4031bbe2006-01-06 11:41:00 +00001906static void ide_cd_remove(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907{
1908 struct cdrom_info *info = drive->driver_data;
1909
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001910 ide_proc_unregister_driver(drive, info->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001911
1912 del_gendisk(info->disk);
1913
1914 ide_cd_put(info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001915}
1916
1917static void ide_cd_release(struct kref *kref)
1918{
1919 struct cdrom_info *info = to_ide_cd(kref);
1920 struct cdrom_device_info *devinfo = &info->devinfo;
1921 ide_drive_t *drive = info->drive;
1922 struct gendisk *g = info->disk;
1923
Jesper Juhl6044ec82005-11-07 01:01:32 -08001924 kfree(info->toc);
Akinobu Mita0a0c4112008-03-26 12:09:02 +01001925 if (devinfo->handle == drive)
1926 unregister_cdrom(devinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001927 drive->dsc_overlap = 0;
1928 drive->driver_data = NULL;
1929 blk_queue_prep_rq(drive->queue, NULL);
1930 g->private_data = NULL;
1931 put_disk(g);
1932 kfree(info);
1933}
1934
Russell King4031bbe2006-01-06 11:41:00 +00001935static int ide_cd_probe(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001936
Linus Torvalds1da177e2005-04-16 15:20:36 -07001937static ide_driver_t ide_cdrom_driver = {
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001938 .gen_driver = {
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001939 .owner = THIS_MODULE,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001940 .name = "ide-cdrom",
1941 .bus = &ide_bus_type,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001942 },
Russell King4031bbe2006-01-06 11:41:00 +00001943 .probe = ide_cd_probe,
1944 .remove = ide_cd_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001945 .version = IDECD_VERSION,
1946 .media = ide_cdrom,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947 .supports_dsc_overlap = 1,
Borislav Petkov99384ae2008-07-16 20:33:45 +02001948 .do_request = ide_cd_do_request,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949 .end_request = ide_end_request,
1950 .error = __ide_error,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001951#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952 .proc = idecd_proc,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001953#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001954};
1955
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001956static int idecd_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957{
1958 struct gendisk *disk = inode->i_bdev->bd_disk;
1959 struct cdrom_info *info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960 int rc = -ENOMEM;
1961
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001962 info = ide_cd_get(disk);
1963 if (!info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964 return -ENXIO;
1965
Borislav Petkov968c4962008-04-26 17:36:37 +02001966 rc = cdrom_open(&info->devinfo, inode, file);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967
1968 if (rc < 0)
1969 ide_cd_put(info);
1970
1971 return rc;
1972}
1973
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001974static int idecd_release(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975{
1976 struct gendisk *disk = inode->i_bdev->bd_disk;
1977 struct cdrom_info *info = ide_cd_g(disk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001979 cdrom_release(&info->devinfo, file);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980
1981 ide_cd_put(info);
1982
1983 return 0;
1984}
1985
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001986static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1987{
1988 struct packet_command cgc;
1989 char buffer[16];
1990 int stat;
1991 char spindown;
1992
1993 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
1994 return -EFAULT;
1995
1996 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
1997
1998 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
1999 if (stat)
2000 return stat;
2001
2002 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2003 return cdrom_mode_select(cdi, &cgc);
2004}
2005
2006static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2007{
2008 struct packet_command cgc;
2009 char buffer[16];
2010 int stat;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002011 char spindown;
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002012
2013 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2014
2015 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2016 if (stat)
2017 return stat;
2018
2019 spindown = buffer[11] & 0x0f;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002020 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002021 return -EFAULT;
2022 return 0;
2023}
2024
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002025static int idecd_ioctl(struct inode *inode, struct file *file,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002026 unsigned int cmd, unsigned long arg)
2027{
2028 struct block_device *bdev = inode->i_bdev;
2029 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2030 int err;
2031
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002032 switch (cmd) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002033 case CDROMSETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002034 return idecd_set_spindown(&info->devinfo, arg);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002035 case CDROMGETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002036 return idecd_get_spindown(&info->devinfo, arg);
2037 default:
2038 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002039 }
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002040
2041 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042 if (err == -EINVAL)
2043 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2044
2045 return err;
2046}
2047
2048static int idecd_media_changed(struct gendisk *disk)
2049{
2050 struct cdrom_info *info = ide_cd_g(disk);
2051 return cdrom_media_changed(&info->devinfo);
2052}
2053
2054static int idecd_revalidate_disk(struct gendisk *disk)
2055{
2056 struct cdrom_info *info = ide_cd_g(disk);
2057 struct request_sense sense;
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01002058
2059 ide_cd_read_toc(info->drive, &sense);
2060
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061 return 0;
2062}
2063
2064static struct block_device_operations idecd_ops = {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002065 .owner = THIS_MODULE,
2066 .open = idecd_open,
2067 .release = idecd_release,
2068 .ioctl = idecd_ioctl,
2069 .media_changed = idecd_media_changed,
2070 .revalidate_disk = idecd_revalidate_disk
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071};
2072
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02002073/* module options */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002074static char *ignore;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075
2076module_param(ignore, charp, 0400);
2077MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2078
Russell King4031bbe2006-01-06 11:41:00 +00002079static int ide_cd_probe(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080{
2081 struct cdrom_info *info;
2082 struct gendisk *g;
2083 struct request_sense sense;
2084
2085 if (!strstr("ide-cdrom", drive->driver_req))
2086 goto failed;
2087 if (!drive->present)
2088 goto failed;
2089 if (drive->media != ide_cdrom && drive->media != ide_optical)
2090 goto failed;
2091 /* skip drives that we were told to ignore */
2092 if (ignore != NULL) {
2093 if (strstr(ignore, drive->name)) {
Borislav Petkov83c85652008-04-26 22:25:15 +02002094 printk(KERN_INFO "ide-cd: ignoring drive %s\n",
2095 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002096 goto failed;
2097 }
2098 }
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -08002099 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100 if (info == NULL) {
Borislav Petkov83c85652008-04-26 22:25:15 +02002101 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
2102 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 goto failed;
2104 }
2105
2106 g = alloc_disk(1 << PARTN_BITS);
2107 if (!g)
2108 goto out_free_cd;
2109
2110 ide_init_disk(g, drive);
2111
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02002112 ide_proc_register_driver(drive, &ide_cdrom_driver);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002113
Linus Torvalds1da177e2005-04-16 15:20:36 -07002114 kref_init(&info->kref);
2115
2116 info->drive = drive;
2117 info->driver = &ide_cdrom_driver;
2118 info->disk = g;
2119
2120 g->private_data = &info->driver;
2121
2122 drive->driver_data = info;
2123
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124 g->minors = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002125 g->driverfs_dev = &drive->gendev;
2126 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2127 if (ide_cdrom_setup(drive)) {
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02002128 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
Bartlomiej Zolnierkiewicz05017db2007-12-24 15:23:43 +01002129 ide_cd_release(&info->kref);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130 goto failed;
2131 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01002133 ide_cd_read_toc(drive, &sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134 g->fops = &idecd_ops;
2135 g->flags |= GENHD_FL_REMOVABLE;
2136 add_disk(g);
2137 return 0;
2138
Linus Torvalds1da177e2005-04-16 15:20:36 -07002139out_free_cd:
2140 kfree(info);
2141failed:
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002142 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002143}
2144
2145static void __exit ide_cdrom_exit(void)
2146{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002147 driver_unregister(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002148}
Bartlomiej Zolnierkiewicz17514e82005-11-19 22:24:35 +01002149
2150static int __init ide_cdrom_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002152 return driver_register(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153}
2154
Kay Sievers263756e2005-12-12 18:03:44 +01002155MODULE_ALIAS("ide:*m-cdrom*");
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +01002156MODULE_ALIAS("ide-cd");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157module_init(ide_cdrom_init);
2158module_exit(ide_cdrom_exit);
2159MODULE_LICENSE("GPL");