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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{
Bartlomiej Zolnierkiewicz0ba11212008-02-01 23:09:21 +010088 struct cdrom_info *cd = drive->driver_data;
89
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +010090 cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED;
91 cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -070092}
93
94static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
95 struct request_sense *sense)
96{
97 int log = 0;
98
Jens Axboe4aff5e22006-08-10 08:44:47 +020099 if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 return 0;
101
102 switch (sense->sense_key) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200103 case NO_SENSE:
104 case RECOVERED_ERROR:
105 break;
106 case NOT_READY:
107 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200108 * don't care about tray state messages for e.g. capacity
109 * commands or in-progress or becoming ready
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200110 */
111 if (sense->asc == 0x3a || sense->asc == 0x04)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200113 log = 1;
114 break;
115 case ILLEGAL_REQUEST:
116 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200117 * don't log START_STOP unit with LoEj set, since we cannot
118 * reliably check if drive can auto-close
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200119 */
120 if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200122 log = 1;
123 break;
124 case UNIT_ATTENTION:
125 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200126 * Make good and sure we've seen this potential media change.
127 * Some drives (i.e. Creative) fail to present the correct sense
128 * key in the error register.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200129 */
130 cdrom_saw_media_change(drive);
131 break;
132 default:
133 log = 1;
134 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 }
136 return log;
137}
138
Borislav Petkove5e076a2008-04-26 22:25:15 +0200139static void cdrom_analyze_sense_data(ide_drive_t *drive,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 struct request *failed_command,
141 struct request_sense *sense)
142{
Alan Coxdbe217a2006-06-25 05:47:44 -0700143 unsigned long sector;
144 unsigned long bio_sectors;
145 unsigned long valid;
146 struct cdrom_info *info = drive->driver_data;
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 if (!cdrom_log_sense(drive, failed_command, sense))
149 return;
150
151 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200152 * If a read toc is executed for a CD-R or CD-RW medium where the first
153 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
154 * confusing error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 */
156 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
157 if (sense->sense_key == 0x05 && sense->asc == 0x24)
158 return;
159
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200160 /* current error */
161 if (sense->error_code == 0x70) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200162 switch (sense->sense_key) {
Alan Coxdbe217a2006-06-25 05:47:44 -0700163 case MEDIUM_ERROR:
164 case VOLUME_OVERFLOW:
165 case ILLEGAL_REQUEST:
166 if (!sense->valid)
167 break;
168 if (failed_command == NULL ||
169 !blk_fs_request(failed_command))
170 break;
171 sector = (sense->information[0] << 24) |
172 (sense->information[1] << 16) |
173 (sense->information[2] << 8) |
174 (sense->information[3]);
175
176 bio_sectors = bio_sectors(failed_command->bio);
177 if (bio_sectors < 4)
178 bio_sectors = 4;
179 if (drive->queue->hardsect_size == 2048)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200180 /* device sector size is 2K */
181 sector <<= 2;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200182 sector &= ~(bio_sectors - 1);
Alan Coxdbe217a2006-06-25 05:47:44 -0700183 valid = (sector - failed_command->sector) << 9;
184
185 if (valid < 0)
186 valid = 0;
187 if (sector < get_capacity(info->disk) &&
Borislav Petkove5e076a2008-04-26 22:25:15 +0200188 drive->probed_capacity - sector < 4 * 75)
Alan Coxdbe217a2006-06-25 05:47:44 -0700189 set_capacity(info->disk, sector);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200190 }
191 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +0100193 ide_cd_log_error(drive->name, failed_command, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194}
195
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200196/* Initialize a ide-cd packet command request */
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100197void ide_cd_init_rq(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198{
199 struct cdrom_info *cd = drive->driver_data;
200
201 ide_init_drive_cmd(rq);
Jens Axboecea28852006-10-12 15:08:45 +0200202 rq->cmd_type = REQ_TYPE_ATA_PC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 rq->rq_disk = cd->disk;
204}
205
206static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
207 struct request *failed_command)
208{
209 struct cdrom_info *info = drive->driver_data;
210 struct request *rq = &info->request_sense_request;
211
212 if (sense == NULL)
213 sense = &info->sense_data;
214
215 /* stuff the sense request in front of our current request */
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +0100216 ide_cd_init_rq(drive, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
218 rq->data = sense;
219 rq->cmd[0] = GPCMD_REQUEST_SENSE;
Borislav Petkove5e076a2008-04-26 22:25:15 +0200220 rq->cmd[4] = 18;
221 rq->data_len = 18;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222
Jens Axboe4aff5e22006-08-10 08:44:47 +0200223 rq->cmd_type = REQ_TYPE_SENSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224
225 /* NOTE! Save the failed command in "rq->buffer" */
226 rq->buffer = (void *) failed_command;
227
228 (void) ide_do_drive_cmd(drive, rq, ide_preempt);
229}
230
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200231static void cdrom_end_request(ide_drive_t *drive, int uptodate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232{
233 struct request *rq = HWGROUP(drive)->rq;
234 int nsectors = rq->hard_cur_sectors;
235
Jens Axboe4aff5e22006-08-10 08:44:47 +0200236 if (blk_sense_request(rq) && uptodate) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 /*
Jens Axboe4aff5e22006-08-10 08:44:47 +0200238 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
239 * failed request
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 */
241 struct request *failed = (struct request *) rq->buffer;
242 struct cdrom_info *info = drive->driver_data;
243 void *sense = &info->sense_data;
244 unsigned long flags;
245
246 if (failed) {
247 if (failed->sense) {
248 sense = failed->sense;
249 failed->sense_len = rq->sense_len;
250 }
Alan Coxdbe217a2006-06-25 05:47:44 -0700251 cdrom_analyze_sense_data(drive, failed, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200253 * now end the failed request
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 */
Alan Coxdbe217a2006-06-25 05:47:44 -0700255 if (blk_fs_request(failed)) {
256 if (ide_end_dequeued_request(drive, failed, 0,
257 failed->hard_nr_sectors))
258 BUG();
259 } else {
260 spin_lock_irqsave(&ide_lock, flags);
Kiyoshi Ueda5e36bb62008-01-28 10:34:20 +0100261 if (__blk_end_request(failed, -EIO,
262 failed->data_len))
263 BUG();
Alan Coxdbe217a2006-06-25 05:47:44 -0700264 spin_unlock_irqrestore(&ide_lock, flags);
265 }
266 } else
267 cdrom_analyze_sense_data(drive, NULL, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 }
269
270 if (!rq->current_nr_sectors && blk_fs_request(rq))
271 uptodate = 1;
272 /* make sure it's fully ended */
273 if (blk_pc_request(rq))
274 nsectors = (rq->data_len + 511) >> 9;
275 if (!nsectors)
276 nsectors = 1;
277
278 ide_end_request(drive, uptodate, nsectors);
279}
280
Borislav Petkov83c85652008-04-26 22:25:15 +0200281static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
Alan Coxdbe217a2006-06-25 05:47:44 -0700282{
Borislav Petkov83c85652008-04-26 22:25:15 +0200283 if (st & 0x80)
Alan Coxdbe217a2006-06-25 05:47:44 -0700284 return;
Borislav Petkov83c85652008-04-26 22:25:15 +0200285 ide_dump_status(drive, msg, st);
Alan Coxdbe217a2006-06-25 05:47:44 -0700286}
287
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200288/*
289 * Returns:
290 * 0: if the request should be continued.
291 * 1: if the request was ended.
292 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
294{
295 struct request *rq = HWGROUP(drive)->rq;
296 int stat, err, sense_key;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200297
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200298 /* check for errors */
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +0100299 stat = ide_read_status(drive);
300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 if (stat_ret)
302 *stat_ret = stat;
303
304 if (OK_STAT(stat, good_stat, BAD_R_STAT))
305 return 0;
306
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200307 /* get the IDE error register */
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +0100308 err = ide_read_error(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 sense_key = err >> 4;
310
311 if (rq == NULL) {
Borislav Petkove5e076a2008-04-26 22:25:15 +0200312 printk(KERN_ERR "%s: missing rq in %s\n",
313 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 return 1;
315 }
316
Jens Axboe4aff5e22006-08-10 08:44:47 +0200317 if (blk_sense_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200318 /*
319 * We got an error trying to get sense info from the drive
320 * (probably while trying to recover from a former error).
321 * Just give up.
322 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200323 rq->cmd_flags |= REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 cdrom_end_request(drive, 0);
325 ide_error(drive, "request sense failure", stat);
326 return 1;
327
Jens Axboe8770c012006-10-12 17:24:52 +0200328 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 /* All other functions, except for READ. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330
331 /*
332 * if we have an error, pass back CHECK_CONDITION as the
333 * scsi status byte
334 */
Jens Axboeb7156732006-11-13 18:05:02 +0100335 if (blk_pc_request(rq) && !rq->errors)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 rq->errors = SAM_STAT_CHECK_CONDITION;
337
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200338 /* check for tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 if (sense_key == NOT_READY) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200340 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200342 /* check for media change */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200343 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 return 0;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200345 } else if (sense_key == ILLEGAL_REQUEST &&
346 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
347 /*
348 * Don't print error message for this condition--
349 * SFF8090i indicates that 5/24/00 is the correct
350 * response to a request to close the tray if the
351 * drive doesn't have that capability.
352 * cdrom_log_sense() knows this!
353 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200354 } else if (!(rq->cmd_flags & REQ_QUIET)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200355 /* otherwise, print an error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 ide_dump_status(drive, "packet command error", stat);
357 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200358
Jens Axboe4aff5e22006-08-10 08:44:47 +0200359 rq->cmd_flags |= REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360
361 /*
362 * instead of playing games with moving completions around,
363 * remove failed request completely and end it when the
364 * request sense has completed
365 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100366 goto end_request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367
368 } else if (blk_fs_request(rq)) {
369 int do_end_request = 0;
370
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200371 /* handle errors from READ and WRITE requests */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372
373 if (blk_noretry_request(rq))
374 do_end_request = 1;
375
376 if (sense_key == NOT_READY) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200377 /* tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 if (rq_data_dir(rq) == READ) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200379 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200381 /* fail the request */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200382 printk(KERN_ERR "%s: tray open\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 do_end_request = 1;
384 } else {
385 struct cdrom_info *info = drive->driver_data;
386
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200387 /*
388 * Allow the drive 5 seconds to recover, some
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 * devices will return this error while flushing
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200390 * data from cache.
391 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 if (!rq->errors)
Borislav Petkov83c85652008-04-26 22:25:15 +0200393 info->write_timeout = jiffies +
394 ATAPI_WAIT_WRITE_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 rq->errors = 1;
396 if (time_after(jiffies, info->write_timeout))
397 do_end_request = 1;
398 else {
399 unsigned long flags;
400
401 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200402 * take a breather relying on the unplug
403 * timer to kick us again
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 */
405 spin_lock_irqsave(&ide_lock, flags);
406 blk_plug_device(drive->queue);
Borislav Petkov83c85652008-04-26 22:25:15 +0200407 spin_unlock_irqrestore(&ide_lock,
408 flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 return 1;
410 }
411 }
412 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200413 /* media change */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200414 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200416 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200417 * Arrange to retry the request but be sure to give up
418 * if we've retried too many times.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200419 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 if (++rq->errors > ERROR_MAX)
421 do_end_request = 1;
422 } else if (sense_key == ILLEGAL_REQUEST ||
423 sense_key == DATA_PROTECT) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200424 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200425 * No point in retrying after an illegal request or data
426 * protect error.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200427 */
428 ide_dump_status_no_sense(drive, "command error", stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 do_end_request = 1;
430 } else if (sense_key == MEDIUM_ERROR) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200431 /*
432 * No point in re-trying a zillion times on a bad
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200433 * sector. If we got here the error is not correctable.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200434 */
Borislav Petkov83c85652008-04-26 22:25:15 +0200435 ide_dump_status_no_sense(drive,
436 "media error (bad sector)",
437 stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 do_end_request = 1;
439 } else if (sense_key == BLANK_CHECK) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200440 /* disk appears blank ?? */
Borislav Petkov83c85652008-04-26 22:25:15 +0200441 ide_dump_status_no_sense(drive, "media error (blank)",
442 stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 do_end_request = 1;
444 } else if ((err & ~ABRT_ERR) != 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200445 /* go to the default handler for other errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 ide_error(drive, "cdrom_decode_status", stat);
447 return 1;
448 } else if ((++rq->errors > ERROR_MAX)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200449 /* we've racked up too many retries, abort */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 do_end_request = 1;
451 }
452
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200453 /*
454 * End a request through request sense analysis when we have
455 * sense data. We need this in order to perform end of media
456 * processing.
457 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100458 if (do_end_request)
459 goto end_request;
Alan Coxdbe217a2006-06-25 05:47:44 -0700460
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100461 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200462 * If we got a CHECK_CONDITION status, queue
463 * a request sense command.
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100464 */
465 if (stat & ERR_STAT)
466 cdrom_queue_request_sense(drive, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 } else {
468 blk_dump_rq_flags(rq, "ide-cd: bad rq");
469 cdrom_end_request(drive, 0);
470 }
471
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200472 /* retry, or handle the next request */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 return 1;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100474
475end_request:
476 if (stat & ERR_STAT) {
477 unsigned long flags;
478
479 spin_lock_irqsave(&ide_lock, flags);
480 blkdev_dequeue_request(rq);
481 HWGROUP(drive)->rq = NULL;
482 spin_unlock_irqrestore(&ide_lock, flags);
483
484 cdrom_queue_request_sense(drive, rq->sense, rq);
485 } else
486 cdrom_end_request(drive, 0);
487
488 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489}
490
491static int cdrom_timer_expiry(ide_drive_t *drive)
492{
493 struct request *rq = HWGROUP(drive)->rq;
494 unsigned long wait = 0;
495
496 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200497 * Some commands are *slow* and normally take a long time to complete.
498 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
499 * commands/drives support that. Let ide_timer_expiry keep polling us
500 * for these.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 */
502 switch (rq->cmd[0]) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200503 case GPCMD_BLANK:
504 case GPCMD_FORMAT_UNIT:
505 case GPCMD_RESERVE_RZONE_TRACK:
506 case GPCMD_CLOSE_TRACK:
507 case GPCMD_FLUSH_CACHE:
508 wait = ATAPI_WAIT_PC;
509 break;
510 default:
511 if (!(rq->cmd_flags & REQ_QUIET))
Borislav Petkov83c85652008-04-26 22:25:15 +0200512 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n",
513 rq->cmd[0]);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200514 wait = 0;
515 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 }
517 return wait;
518}
519
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200520/*
521 * Set up the device registers for transferring a packet command on DEV,
522 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
523 * which actually transfers the command to the drive. If this is a
524 * drq_interrupt device, this routine will arrange for HANDLER to be
525 * called when the interrupt from the drive arrives. Otherwise, HANDLER
526 * will be called immediately after the drive is prepared for the transfer.
527 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
529 int xferlen,
530 ide_handler_t *handler)
531{
532 ide_startstop_t startstop;
533 struct cdrom_info *info = drive->driver_data;
534 ide_hwif_t *hwif = drive->hwif;
535
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200536 /* wait for the controller to be idle */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY))
538 return startstop;
539
Bartlomiej Zolnierkiewicz3a6a3542008-01-25 22:17:13 +0100540 /* FIXME: for Virtual DMA we must check harder */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 if (info->dma)
542 info->dma = !hwif->dma_setup(drive);
543
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200544 /* set up the controller registers */
Bartlomiej Zolnierkiewicz2fc57382008-01-25 22:17:13 +0100545 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL |
546 IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +0100547
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +0100548 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
Albert Leef0dd8712007-02-17 02:40:21 +0100549 /* waiting for CDB interrupt, not DMA yet. */
550 if (info->dma)
551 drive->waiting_for_dma = 0;
552
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 /* packet command */
Borislav Petkov83c85652008-04-26 22:25:15 +0200554 ide_execute_command(drive, WIN_PACKETCMD, handler,
555 ATAPI_WAIT_PC, cdrom_timer_expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 return ide_started;
557 } else {
558 unsigned long flags;
559
560 /* packet command */
561 spin_lock_irqsave(&ide_lock, flags);
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200562 hwif->OUTBSYNC(drive, WIN_PACKETCMD,
563 hwif->io_ports[IDE_COMMAND_OFFSET]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 ndelay(400);
565 spin_unlock_irqrestore(&ide_lock, flags);
566
567 return (*handler) (drive);
568 }
569}
570
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200571/*
572 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
573 * registers must have already been prepared by cdrom_start_packet_command.
574 * HANDLER is the interrupt handler to call when the command completes or
575 * there's data ready.
576 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577#define ATAPI_MIN_CDB_BYTES 12
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200578static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 struct request *rq,
580 ide_handler_t *handler)
581{
582 ide_hwif_t *hwif = drive->hwif;
583 int cmd_len;
584 struct cdrom_info *info = drive->driver_data;
585 ide_startstop_t startstop;
586
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +0100587 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200588 /*
589 * Here we should have been called after receiving an interrupt
590 * from the device. DRQ should how be set.
591 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200593 /* check for errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
595 return ide_stopped;
Albert Leef0dd8712007-02-17 02:40:21 +0100596
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200597 /* ok, next interrupt will be DMA interrupt */
Albert Leef0dd8712007-02-17 02:40:21 +0100598 if (info->dma)
599 drive->waiting_for_dma = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200601 /* otherwise, we must wait for DRQ to get set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
603 BUSY_STAT, WAIT_READY))
604 return startstop;
605 }
606
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200607 /* arm the interrupt handler */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
609
610 /* ATAPI commands get padded out to 12 bytes minimum */
611 cmd_len = COMMAND_SIZE(rq->cmd[0]);
612 if (cmd_len < ATAPI_MIN_CDB_BYTES)
613 cmd_len = ATAPI_MIN_CDB_BYTES;
614
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200615 /* send the command to the device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len);
617
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200618 /* start the DMA if need be */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 if (info->dma)
620 hwif->dma_start(drive);
621
622 return ide_started;
623}
624
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200625/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 * Block read functions.
627 */
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100628static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
629{
630 while (len > 0) {
631 int dum = 0;
632 xf(drive, &dum, sizeof(dum));
633 len -= sizeof(dum);
634 }
635}
636
Bartlomiej Zolnierkiewiczb4ab7262008-02-01 23:09:26 +0100637static void ide_cd_drain_data(ide_drive_t *drive, int nsects)
638{
639 while (nsects > 0) {
640 static char dum[SECTOR_SIZE];
641
642 drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum));
643 nsects--;
644 }
645}
646
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 * Check the contents of the interrupt reason register from the cdrom
649 * and attempt to recover if there are problems. Returns 0 if everything's
650 * ok; nonzero if the request has been terminated.
651 */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100652static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
653 int len, int ireason, int rw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654{
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100655 /*
656 * ireason == 0: the drive wants to receive data from us
657 * ireason == 2: the drive is expecting to transfer data to us
658 */
659 if (ireason == (!rw << 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 return 0;
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100661 else if (ireason == (rw << 1)) {
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100662 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100663 xfer_func_t *xf;
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100664
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200665 /* whoops... */
Bartlomiej Zolnierkiewicz35379c02007-12-24 15:23:43 +0100666 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200667 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100669 xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes;
670 ide_cd_pad_transfer(drive, xf, len);
671 } else if (rw == 0 && ireason == 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200672 /*
673 * Some drives (ASUS) seem to tell us that status info is
674 * available. Just get it and ignore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 */
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +0100676 (void)ide_read_status(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 return 0;
678 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200679 /* drive wants a command packet, or invalid ireason... */
Bartlomiej Zolnierkiewicz35379c02007-12-24 15:23:43 +0100680 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200681 drive->name, __func__, ireason);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 }
683
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100684 if (rq->cmd_type == REQ_TYPE_ATA_PC)
685 rq->cmd_flags |= REQ_FAILED;
686
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 cdrom_end_request(drive, 0);
688 return -1;
689}
690
691/*
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100692 * Assume that the drive will always provide data in multiples of at least
693 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
694 */
695static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
696{
697 struct cdrom_info *cd = drive->driver_data;
698
699 if ((len % SECTOR_SIZE) == 0)
700 return 0;
701
702 printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200703 drive->name, __func__, len);
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100704
705 if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
706 printk(KERN_ERR " This drive is not supported by "
707 "this version of the driver\n");
708 else {
709 printk(KERN_ERR " Trying to limit transfer sizes\n");
710 cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
711 }
712
713 return 1;
714}
715
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100716static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
Bartlomiej Zolnierkiewicz94f5a862008-02-01 23:09:26 +0100717
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200719 * Routine to send a read/write packet command to the drive. This is usually
720 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
721 * devices, it is called from an interrupt when the drive is ready to accept
722 * the command.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723 */
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100724static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725{
726 struct request *rq = HWGROUP(drive)->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100728 if (rq_data_dir(rq) == READ) {
729 unsigned short sectors_per_frame =
730 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
731 int nskip = rq->sector & (sectors_per_frame - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100733 /*
734 * If the requested sector doesn't start on a frame boundary,
735 * we must adjust the start of the transfer so that it does,
736 * and remember to skip the first few sectors.
737 *
738 * If the rq->current_nr_sectors field is larger than the size
739 * of the buffer, it will mean that we're to skip a number of
740 * sectors equal to the amount by which rq->current_nr_sectors
741 * is larger than the buffer size.
742 */
743 if (nskip > 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200744 /* sanity check... */
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100745 if (rq->current_nr_sectors !=
746 bio_cur_sectors(rq->bio)) {
747 printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200748 drive->name, __func__,
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100749 rq->current_nr_sectors);
750 cdrom_end_request(drive, 0);
751 return ide_stopped;
752 }
753 rq->current_nr_sectors += nskip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 }
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100756#if 0
757 else
758 /* the immediate bit */
759 rq->cmd[1] = 1 << 3;
760#endif
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200761 /* set up the command */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 rq->timeout = ATAPI_WAIT_PC;
763
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200764 /* send the command to the drive and return */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100765 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766}
767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768#define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
769#define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
770#define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
771
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200772static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773{
774 struct cdrom_info *info = drive->driver_data;
775 int stat;
776 static int retry = 10;
777
778 if (cdrom_decode_status(drive, 0, &stat))
779 return ide_stopped;
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +0100780
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +0100781 info->cd_flags |= IDE_CD_FLAG_SEEKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782
783 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200784 if (--retry == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 drive->dsc_overlap = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 }
787 return ide_stopped;
788}
789
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200790static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791{
792 struct request *rq = HWGROUP(drive)->rq;
793 sector_t frame = rq->sector;
794
795 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
796
797 memset(rq->cmd, 0, sizeof(rq->cmd));
798 rq->cmd[0] = GPCMD_SEEK;
799 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
800
801 rq->timeout = ATAPI_WAIT_PC;
802 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
803}
804
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200805static ide_startstop_t cdrom_start_seek(ide_drive_t *drive, unsigned int block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806{
807 struct cdrom_info *info = drive->driver_data;
808
809 info->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 info->start_seek = jiffies;
Borislav Petkov83c85652008-04-26 22:25:15 +0200811 return cdrom_start_packet_command(drive, 0,
812 cdrom_start_seek_continuation);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813}
814
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200815/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200816 * Fix up a possibly partially-processed request so that we can start it over
817 * entirely, or even put it back on the request queue.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200818 */
819static void restore_request(struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820{
821 if (rq->buffer != bio_data(rq->bio)) {
Borislav Petkov83c85652008-04-26 22:25:15 +0200822 sector_t n =
823 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824
825 rq->buffer = bio_data(rq->bio);
826 rq->nr_sectors += n;
827 rq->sector -= n;
828 }
Borislav Petkov83c85652008-04-26 22:25:15 +0200829 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
830 rq->hard_cur_sectors = rq->current_nr_sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 rq->hard_nr_sectors = rq->nr_sectors;
832 rq->hard_sector = rq->sector;
833 rq->q->prep_rq_fn(rq->q, rq);
834}
835
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200836/*
837 * All other packet commands.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 */
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100839static void ide_cd_request_sense_fixup(struct request *rq)
840{
841 /*
842 * Some of the trailing request sense fields are optional,
843 * and some drives don't send them. Sigh.
844 */
845 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
846 rq->data_len > 0 && rq->data_len <= 5)
847 while (rq->data_len > 0) {
848 *(u8 *)rq->data++ = 0;
849 --rq->data_len;
850 }
851}
852
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +0100853int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854{
855 struct request_sense sense;
856 int retries = 10;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200857 unsigned int flags = rq->cmd_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858
859 if (rq->sense == NULL)
860 rq->sense = &sense;
861
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200862 /* start of retry loop */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 do {
864 int error;
865 unsigned long time = jiffies;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200866 rq->cmd_flags = flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
868 error = ide_do_drive_cmd(drive, rq, ide_wait);
869 time = jiffies - time;
870
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200871 /*
872 * FIXME: we should probably abort/retry or something in case of
873 * failure.
874 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200875 if (rq->cmd_flags & REQ_FAILED) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200876 /*
877 * The request failed. Retry if it was due to a unit
878 * attention status (usually means media was changed).
879 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880 struct request_sense *reqbuf = rq->sense;
881
882 if (reqbuf->sense_key == UNIT_ATTENTION)
883 cdrom_saw_media_change(drive);
884 else if (reqbuf->sense_key == NOT_READY &&
885 reqbuf->asc == 4 && reqbuf->ascq != 4) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200886 /*
887 * The drive is in the process of loading
888 * a disk. Retry, but wait a little to give
889 * the drive time to complete the load.
890 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 ssleep(2);
892 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200893 /* otherwise, don't retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894 retries = 0;
895 }
896 --retries;
897 }
898
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200899 /* end of retry loop */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200900 } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200902 /* return an error if the command failed */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200903 return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904}
905
906/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200907 * Called from blk_end_request_callback() after the data of the request is
908 * completed and before the request itself is completed. By returning value '1',
909 * blk_end_request_callback() returns immediately without completing it.
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500910 */
911static int cdrom_newpc_intr_dummy_cb(struct request *rq)
912{
913 return 1;
914}
915
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
917{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200918 ide_hwif_t *hwif = drive->hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 struct cdrom_info *info = drive->driver_data;
920 struct request *rq = HWGROUP(drive)->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 xfer_func_t *xferfunc;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100922 ide_expiry_t *expiry = NULL;
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +0100923 int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;
924 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
925 unsigned int timeout;
926 u8 lowcyl, highcyl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200928 /* check for errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929 dma = info->dma;
930 if (dma) {
931 info->dma = 0;
932 dma_error = HWIF(drive)->ide_dma_end(drive);
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100933 if (dma_error) {
934 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +0100935 write ? "write" : "read");
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100936 ide_dma_off(drive);
937 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 }
939
940 if (cdrom_decode_status(drive, 0, &stat))
941 return ide_stopped;
942
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200943 /* using dma, transfer is complete now */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 if (dma) {
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100945 if (dma_error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 return ide_error(drive, "dma error", stat);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100947 if (blk_fs_request(rq)) {
948 ide_end_request(drive, 1, rq->nr_sectors);
949 return ide_stopped;
950 }
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +0100951 goto end_request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 }
953
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200954 /* ok we fall to pio :/ */
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200955 ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]) & 0x3;
956 lowcyl = hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
957 highcyl = hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
959 len = lowcyl + (256 * highcyl);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100960
961 thislen = blk_fs_request(rq) ? len : rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 if (thislen > len)
963 thislen = len;
964
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200965 /* If DRQ is clear, the command has completed. */
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500966 if ((stat & DRQ_STAT) == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100967 if (blk_fs_request(rq)) {
968 /*
969 * If we're not done reading/writing, complain.
970 * Otherwise, complete the command normally.
971 */
972 uptodate = 1;
973 if (rq->current_nr_sectors > 0) {
974 printk(KERN_ERR "%s: %s: data underrun "
975 "(%d blocks)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200976 drive->name, __func__,
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100977 rq->current_nr_sectors);
978 if (!write)
979 rq->cmd_flags |= REQ_FAILED;
980 uptodate = 0;
981 }
982 cdrom_end_request(drive, uptodate);
983 return ide_stopped;
984 } else if (!blk_pc_request(rq)) {
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +0100985 ide_cd_request_sense_fixup(rq);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200986 /* complain if we still have data left to transfer */
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +0100987 uptodate = rq->data_len ? 0 : 1;
988 }
989 goto end_request;
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500990 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200992 /* check which way to transfer data */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100993 if (ide_cd_check_ireason(drive, rq, len, ireason, write))
994 return ide_stopped;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100995
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100996 if (blk_fs_request(rq)) {
997 if (write == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100998 int nskip;
999
1000 if (ide_cd_check_transfer_size(drive, len)) {
1001 cdrom_end_request(drive, 0);
1002 return ide_stopped;
1003 }
1004
1005 /*
1006 * First, figure out if we need to bit-bucket
1007 * any of the leading sectors.
1008 */
1009 nskip = min_t(int, rq->current_nr_sectors
1010 - bio_cur_sectors(rq->bio),
1011 thislen >> 9);
1012 if (nskip > 0) {
1013 ide_cd_drain_data(drive, nskip);
1014 rq->current_nr_sectors -= nskip;
1015 thislen -= (nskip << 9);
1016 }
1017 }
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001018 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001020 if (ireason == 0) {
1021 write = 1;
1022 xferfunc = HWIF(drive)->atapi_output_bytes;
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +01001023 } else {
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001024 write = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 xferfunc = HWIF(drive)->atapi_input_bytes;
1026 }
1027
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001028 /* transfer data */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029 while (thislen > 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001030 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
Bartlomiej Zolnierkiewicza11e77d2008-02-01 23:09:27 +01001031 int blen = rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001033 /* bio backed? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034 if (rq->bio) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001035 if (blk_fs_request(rq)) {
1036 ptr = rq->buffer;
1037 blen = rq->current_nr_sectors << 9;
1038 } else {
1039 ptr = bio_data(rq->bio);
1040 blen = bio_iovec(rq->bio)->bv_len;
1041 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 }
1043
1044 if (!ptr) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001045 if (blk_fs_request(rq) && !write)
1046 /*
Borislav Petkov968c4962008-04-26 17:36:37 +02001047 * If the buffers are full, pipe the rest into
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001048 * oblivion.
1049 */
Borislav Petkov968c4962008-04-26 17:36:37 +02001050 ide_cd_drain_data(drive, thislen >> 9);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001051 else {
1052 printk(KERN_ERR "%s: confused, missing data\n",
1053 drive->name);
1054 blk_dump_rq_flags(rq, rq_data_dir(rq)
1055 ? "cdrom_newpc_intr, write"
1056 : "cdrom_newpc_intr, read");
1057 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 break;
1059 }
1060
1061 if (blen > thislen)
1062 blen = thislen;
1063
1064 xferfunc(drive, ptr, blen);
1065
1066 thislen -= blen;
1067 len -= blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001069 if (blk_fs_request(rq)) {
1070 rq->buffer += blen;
1071 rq->nr_sectors -= (blen >> 9);
1072 rq->current_nr_sectors -= (blen >> 9);
1073 rq->sector += (blen >> 9);
1074
1075 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1076 cdrom_end_request(drive, 1);
1077 } else {
1078 rq->data_len -= blen;
1079
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -05001080 /*
1081 * The request can't be completed until DRQ is cleared.
1082 * So complete the data, but don't complete the request
1083 * using the dummy function for the callback feature
1084 * of blk_end_request_callback().
1085 */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001086 if (rq->bio)
1087 blk_end_request_callback(rq, 0, blen,
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -05001088 cdrom_newpc_intr_dummy_cb);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001089 else
1090 rq->data += blen;
1091 }
Andreas Schwabbcd88ac2008-02-26 21:50:35 +01001092 if (!write && blk_sense_request(rq))
1093 rq->sense_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094 }
1095
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001096 /* pad, if necessary */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001097 if (!blk_fs_request(rq) && len > 0)
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +01001098 ide_cd_pad_transfer(drive, xferfunc, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001100 if (blk_pc_request(rq)) {
1101 timeout = rq->timeout;
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001102 } else {
1103 timeout = ATAPI_WAIT_PC;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001104 if (!blk_fs_request(rq))
1105 expiry = cdrom_timer_expiry;
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001106 }
1107
1108 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 return ide_started;
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001110
1111end_request:
1112 if (blk_pc_request(rq)) {
1113 unsigned long flags;
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +01001114 unsigned int dlen = rq->data_len;
1115
1116 if (dma)
1117 rq->data_len = 0;
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001118
1119 spin_lock_irqsave(&ide_lock, flags);
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +01001120 if (__blk_end_request(rq, 0, dlen))
Bartlomiej Zolnierkiewiczff1bfbc2008-02-01 23:09:25 +01001121 BUG();
1122 HWGROUP(drive)->rq = NULL;
1123 spin_unlock_irqrestore(&ide_lock, flags);
1124 } else {
1125 if (!uptodate)
1126 rq->cmd_flags |= REQ_FAILED;
1127 cdrom_end_request(drive, uptodate);
1128 }
1129 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130}
1131
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001132static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133{
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001134 struct cdrom_info *cd = drive->driver_data;
1135 int write = rq_data_dir(rq) == WRITE;
1136 unsigned short sectors_per_frame =
1137 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1138
1139 if (write) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001140 /* disk has become write protected */
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001141 if (cd->disk->policy) {
1142 cdrom_end_request(drive, 0);
1143 return ide_stopped;
1144 }
1145 } else {
1146 /*
1147 * We may be retrying this request after an error. Fix up any
1148 * weirdness which might be present in the request packet.
1149 */
1150 restore_request(rq);
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001151 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001153 /* use DMA, if possible / writes *must* be hardware frame aligned */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1155 (rq->sector & (sectors_per_frame - 1))) {
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001156 if (write) {
1157 cdrom_end_request(drive, 0);
1158 return ide_stopped;
1159 }
1160 cd->dma = 0;
1161 } else
1162 cd->dma = drive->using_dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001164 if (write)
1165 cd->devinfo.media_written = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001167 /* start sending the read/write request to the drive */
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +01001168 return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169}
1170
1171static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1172{
1173 struct request *rq = HWGROUP(drive)->rq;
1174
1175 if (!rq->timeout)
1176 rq->timeout = ATAPI_WAIT_PC;
1177
1178 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1179}
1180
1181static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
1182{
1183 struct cdrom_info *info = drive->driver_data;
1184
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001185 if (blk_pc_request(rq))
1186 rq->cmd_flags |= REQ_QUIET;
1187 else
1188 rq->cmd_flags &= ~REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001189
1190 info->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001192 /* sg request */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001193 if (rq->bio) {
1194 int mask = drive->queue->dma_alignment;
Borislav Petkov83c85652008-04-26 22:25:15 +02001195 unsigned long addr =
1196 (unsigned long)page_address(bio_page(rq->bio));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198 info->dma = drive->using_dma;
1199
1200 /*
1201 * check if dma is safe
Linus Torvalds5d9e4ea2005-05-27 07:36:17 -07001202 *
1203 * NOTE! The "len" and "addr" checks should possibly have
1204 * separate masks.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205 */
Jens Axboe4e7c6812005-05-31 17:47:36 +02001206 if ((rq->data_len & 15) || (addr & mask))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 info->dma = 0;
1208 }
1209
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001210 /* start sending the command to the drive */
Borislav Petkov83c85652008-04-26 22:25:15 +02001211 return cdrom_start_packet_command(drive, rq->data_len,
1212 cdrom_do_newpc_cont);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213}
1214
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001215/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216 * cdrom driver request routine.
1217 */
Borislav Petkove5e076a2008-04-26 22:25:15 +02001218static ide_startstop_t ide_do_rw_cdrom(ide_drive_t *drive, struct request *rq,
1219 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220{
1221 ide_startstop_t action;
1222 struct cdrom_info *info = drive->driver_data;
1223
1224 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001225 if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 unsigned long elapsed = jiffies - info->start_seek;
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +01001227 int stat = ide_read_status(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228
1229 if ((stat & SEEK_STAT) != SEEK_STAT) {
1230 if (elapsed < IDECD_SEEK_TIMEOUT) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001231 ide_stall_queue(drive,
1232 IDECD_SEEK_TIMER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233 return ide_stopped;
1234 }
Borislav Petkov83c85652008-04-26 22:25:15 +02001235 printk(KERN_ERR "%s: DSC timeout\n",
1236 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237 }
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001238 info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001239 }
Borislav Petkov83c85652008-04-26 22:25:15 +02001240 if (rq_data_dir(rq) == READ &&
1241 IDE_LARGE_SEEK(info->last_block, block,
1242 IDECD_SEEK_THRESHOLD) &&
1243 drive->dsc_overlap)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244 action = cdrom_start_seek(drive, block);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001245 else
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001246 action = cdrom_start_rw(drive, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247 info->last_block = block;
1248 return action;
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001249 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
Jens Axboecea28852006-10-12 15:08:45 +02001250 rq->cmd_type == REQ_TYPE_ATA_PC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 return cdrom_do_block_pc(drive, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001252 } else if (blk_special_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001253 /* right now this can only be a reset... */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 cdrom_end_request(drive, 1);
1255 return ide_stopped;
1256 }
1257
1258 blk_dump_rq_flags(rq, "ide-cd bad flags");
1259 cdrom_end_request(drive, 0);
1260 return ide_stopped;
1261}
1262
1263
1264
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001265/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266 * Ioctl handling.
1267 *
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001268 * Routines which queue packet commands take as a final argument a pointer to a
1269 * request_sense struct. If execution of the command results in an error with a
1270 * CHECK CONDITION status, this structure will be filled with the results of the
1271 * subsequent request sense command. The pointer can also be NULL, in which case
1272 * no sense information is returned.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 */
Borislav Petkove5e076a2008-04-26 22:25:15 +02001274static void msf_from_bcd(struct atapi_msf *msf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275{
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001276 msf->minute = BCD2BIN(msf->minute);
1277 msf->second = BCD2BIN(msf->second);
1278 msf->frame = BCD2BIN(msf->frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279}
1280
Borislav Petkovf9afd182008-02-01 23:09:29 +01001281int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282{
1283 struct request req;
1284 struct cdrom_info *info = drive->driver_data;
1285 struct cdrom_device_info *cdi = &info->devinfo;
1286
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001287 ide_cd_init_rq(drive, &req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288
1289 req.sense = sense;
1290 req.cmd[0] = GPCMD_TEST_UNIT_READY;
Jens Axboe4aff5e22006-08-10 08:44:47 +02001291 req.cmd_flags |= REQ_QUIET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001293 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001294 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1295 * instead of supporting the LOAD_UNLOAD opcode.
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001296 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 req.cmd[7] = cdi->sanyo_slot % 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001299 return ide_cd_queue_pc(drive, &req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300}
1301
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1303 unsigned long *sectors_per_frame,
1304 struct request_sense *sense)
1305{
1306 struct {
1307 __u32 lba;
1308 __u32 blocklen;
1309 } capbuf;
1310
1311 int stat;
1312 struct request req;
1313
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001314 ide_cd_init_rq(drive, &req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315
1316 req.sense = sense;
1317 req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
1318 req.data = (char *)&capbuf;
1319 req.data_len = sizeof(capbuf);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001320 req.cmd_flags |= REQ_QUIET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001322 stat = ide_cd_queue_pc(drive, &req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 if (stat == 0) {
1324 *capacity = 1 + be32_to_cpu(capbuf.lba);
1325 *sectors_per_frame =
1326 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1327 }
1328
1329 return stat;
1330}
1331
1332static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1333 int format, char *buf, int buflen,
1334 struct request_sense *sense)
1335{
1336 struct request req;
1337
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001338 ide_cd_init_rq(drive, &req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
1340 req.sense = sense;
1341 req.data = buf;
1342 req.data_len = buflen;
Jens Axboe4aff5e22006-08-10 08:44:47 +02001343 req.cmd_flags |= REQ_QUIET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1345 req.cmd[6] = trackno;
1346 req.cmd[7] = (buflen >> 8);
1347 req.cmd[8] = (buflen & 0xff);
1348 req.cmd[9] = (format << 6);
1349
1350 if (msf_flag)
1351 req.cmd[1] = 2;
1352
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01001353 return ide_cd_queue_pc(drive, &req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354}
1355
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356/* Try to read the entire TOC for the disk into our internal buffer. */
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001357int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358{
1359 int stat, ntracks, i;
1360 struct cdrom_info *info = drive->driver_data;
1361 struct cdrom_device_info *cdi = &info->devinfo;
1362 struct atapi_toc *toc = info->toc;
1363 struct {
1364 struct atapi_toc_header hdr;
1365 struct atapi_toc_entry ent;
1366 } ms_tmp;
1367 long last_written;
1368 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1369
1370 if (toc == NULL) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001371 /* try to allocate space */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001372 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 if (toc == NULL) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001374 printk(KERN_ERR "%s: No cdrom TOC buffer!\n",
1375 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376 return -ENOMEM;
1377 }
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001378 info->toc = toc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001379 }
1380
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001381 /*
1382 * Check to see if the existing data is still valid. If it is,
1383 * just return.
1384 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385 (void) cdrom_check_status(drive, sense);
1386
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001387 if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001388 return 0;
1389
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001390 /* try to get the total cdrom capacity and sector size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
1392 sense);
1393 if (stat)
1394 toc->capacity = 0x1fffff;
1395
1396 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001397 /* save a private copy of the TOC capacity for error handling */
Alan Coxdbe217a2006-06-25 05:47:44 -07001398 drive->probed_capacity = toc->capacity * sectors_per_frame;
1399
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 blk_queue_hardsect_size(drive->queue,
1401 sectors_per_frame << SECTOR_BITS);
1402
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001403 /* first read just the header, so we know how long the TOC is */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001404 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1405 sizeof(struct atapi_toc_header), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001406 if (stat)
1407 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001409 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001410 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1411 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413
1414 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1415 if (ntracks <= 0)
1416 return -EIO;
1417 if (ntracks > MAX_TRACKS)
1418 ntracks = MAX_TRACKS;
1419
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001420 /* now read the whole schmeer */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1422 (char *)&toc->hdr,
1423 sizeof(struct atapi_toc_header) +
1424 (ntracks + 1) *
1425 sizeof(struct atapi_toc_entry), sense);
1426
1427 if (stat && toc->hdr.first_track > 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001428 /*
1429 * Cds with CDI tracks only don't have any TOC entries, despite
1430 * of this the returned values are
1431 * first_track == last_track = number of CDI tracks + 1,
1432 * so that this case is indistinguishable from the same layout
1433 * plus an additional audio track. If we get an error for the
1434 * regular case, we assume a CDI without additional audio
1435 * tracks. In this case the readable TOC is empty (CDI tracks
1436 * are not included) and only holds the Leadout entry.
1437 *
1438 * Heiko Eißfeldt.
1439 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440 ntracks = 0;
1441 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1442 (char *)&toc->hdr,
1443 sizeof(struct atapi_toc_header) +
1444 (ntracks + 1) *
1445 sizeof(struct atapi_toc_entry),
1446 sense);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001447 if (stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 return stat;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001449
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001450 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001451 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1452 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001453 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001454 toc->hdr.first_track = CDROM_LEADOUT;
1455 toc->hdr.last_track = CDROM_LEADOUT;
1456 }
1457 }
1458
1459 if (stat)
1460 return stat;
1461
Borislav Petkov7eb43fd2008-02-11 00:32:13 +01001462 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001464 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001465 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1466 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001469 for (i = 0; i <= ntracks; i++) {
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001470 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1471 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001472 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473 msf_from_bcd(&toc->ent[i].addr.msf);
1474 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001475 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1476 toc->ent[i].addr.msf.second,
1477 toc->ent[i].addr.msf.frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478 }
1479
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480 if (toc->hdr.first_track != CDROM_LEADOUT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001481 /* read the multisession information */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001482 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1483 sizeof(ms_tmp), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001484 if (stat)
1485 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486
1487 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1488 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +02001489 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1490 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1492 }
1493
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001494 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001495 /* re-read multisession information using MSF format */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1497 sizeof(ms_tmp), sense);
1498 if (stat)
1499 return stat;
1500
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001501 msf_from_bcd(&ms_tmp.ent.addr.msf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001502 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001503 ms_tmp.ent.addr.msf.second,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 ms_tmp.ent.addr.msf.frame);
1505 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001506
1507 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1508
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001509 /* now try to get the total cdrom capacity */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510 stat = cdrom_get_last_written(cdi, &last_written);
1511 if (!stat && (last_written > toc->capacity)) {
1512 toc->capacity = last_written;
1513 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Alan Coxdbe217a2006-06-25 05:47:44 -07001514 drive->probed_capacity = toc->capacity * sectors_per_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515 }
1516
1517 /* Remember that we've read this stuff. */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001518 info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519
1520 return 0;
1521}
1522
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001523int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001524{
1525 struct cdrom_info *info = drive->driver_data;
1526 struct cdrom_device_info *cdi = &info->devinfo;
1527 struct packet_command cgc;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001528 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001529
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001530 if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001531 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001532
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001533 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001534 do {
1535 /* we seem to get stat=0x01,err=0x00 the first time (??) */
Eric Piel9235e682005-06-23 00:10:29 -07001536 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1537 if (!stat)
1538 break;
1539 } while (--attempts);
1540 return stat;
1541}
1542
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001543void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001544{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001545 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001546 u16 curspeed, maxspeed;
1547
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001548 curspeed = *(u16 *)&buf[8 + 14];
1549 maxspeed = *(u16 *)&buf[8 + 8];
1550
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001551 if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001552 curspeed = le16_to_cpu(curspeed);
1553 maxspeed = le16_to_cpu(maxspeed);
Eric Piel9235e682005-06-23 00:10:29 -07001554 } else {
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001555 curspeed = be16_to_cpu(curspeed);
1556 maxspeed = be16_to_cpu(maxspeed);
Eric Piel9235e682005-06-23 00:10:29 -07001557 }
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001558
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001559 cd->current_speed = (curspeed + (176/2)) / 176;
1560 cd->max_speed = (maxspeed + (176/2)) / 176;
Eric Piel9235e682005-06-23 00:10:29 -07001561}
1562
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001563#define IDE_CD_CAPABILITIES \
1564 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1565 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1566 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1567 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1568 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001569
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570static struct cdrom_device_ops ide_cdrom_dops = {
1571 .open = ide_cdrom_open_real,
1572 .release = ide_cdrom_release_real,
1573 .drive_status = ide_cdrom_drive_status,
1574 .media_changed = ide_cdrom_check_media_change_real,
1575 .tray_move = ide_cdrom_tray_move,
1576 .lock_door = ide_cdrom_lock_door,
1577 .select_speed = ide_cdrom_select_speed,
1578 .get_last_session = ide_cdrom_get_last_session,
1579 .get_mcn = ide_cdrom_get_mcn,
1580 .reset = ide_cdrom_reset,
1581 .audio_ioctl = ide_cdrom_audio_ioctl,
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001582 .capability = IDE_CD_CAPABILITIES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583 .generic_packet = ide_cdrom_packet,
1584};
1585
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001586static int ide_cdrom_register(ide_drive_t *drive, int nslots)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001587{
1588 struct cdrom_info *info = drive->driver_data;
1589 struct cdrom_device_info *devinfo = &info->devinfo;
1590
1591 devinfo->ops = &ide_cdrom_dops;
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001592 devinfo->speed = info->current_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593 devinfo->capacity = nslots;
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001594 devinfo->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595 strcpy(devinfo->name, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001596
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001597 if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
Bartlomiej Zolnierkiewicz3cbd8142007-12-24 15:23:43 +01001598 devinfo->mask |= CDC_SELECT_SPEED;
1599
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600 devinfo->disk = info->disk;
1601 return register_cdrom(devinfo);
1602}
1603
Borislav Petkove5e076a2008-04-26 22:25:15 +02001604static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001606 struct cdrom_info *cd = drive->driver_data;
1607 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001608 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1609 mechtype_t mechtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001610 int nslots = 1;
1611
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001612 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1613 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1614 CDC_MO_DRIVE | CDC_RAM);
1615
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 if (drive->media == ide_optical) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001617 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
Borislav Petkov83c85652008-04-26 22:25:15 +02001618 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n",
1619 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620 return nslots;
1621 }
1622
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001623 if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001624 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001625 cdi->mask &= ~CDC_PLAY_AUDIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001626 return nslots;
1627 }
1628
1629 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001630 * We have to cheat a little here. the packet will eventually be queued
1631 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1632 * Since this device hasn't been registered with the Uniform layer yet,
1633 * it can't do this. Same goes for cdi->ops.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001634 */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001635 cdi->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001636 cdi->ops = &ide_cdrom_dops;
1637
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001638 if (ide_cdrom_get_capabilities(drive, buf))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001639 return 0;
1640
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001641 if ((buf[8 + 6] & 0x01) == 0)
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001642 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001643 if (buf[8 + 6] & 0x08)
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001644 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001645 if (buf[8 + 3] & 0x01)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001646 cdi->mask &= ~CDC_CD_R;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001647 if (buf[8 + 3] & 0x02)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001648 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001649 if (buf[8 + 2] & 0x38)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001650 cdi->mask &= ~CDC_DVD;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001651 if (buf[8 + 3] & 0x20)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001652 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001653 if (buf[8 + 3] & 0x10)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001654 cdi->mask &= ~CDC_DVD_R;
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001655 if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001656 cdi->mask &= ~CDC_PLAY_AUDIO;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001657
1658 mechtype = buf[8 + 6] >> 5;
1659 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001660 cdi->mask |= CDC_CLOSE_TRAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001661
Linus Torvalds1da177e2005-04-16 15:20:36 -07001662 if (cdi->sanyo_slot > 0) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001663 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001664 nslots = 3;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001665 } else if (mechtype == mechtype_individual_changer ||
1666 mechtype == mechtype_cartridge_changer) {
Bartlomiej Zolnierkiewicz2609d062008-02-01 23:09:19 +01001667 nslots = cdrom_number_of_slots(cdi);
1668 if (nslots > 1)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001669 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001670 }
1671
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001672 ide_cdrom_update_speed(drive, buf);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001673
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674 printk(KERN_INFO "%s: ATAPI", drive->name);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001675
1676 /* don't print speed if the drive reported 0 */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001677 if (cd->max_speed)
1678 printk(KERN_CONT " %dX", cd->max_speed);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001679
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001680 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001681
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001682 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1683 printk(KERN_CONT " DVD%s%s",
1684 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1685 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001686
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001687 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1688 printk(KERN_CONT " CD%s%s",
1689 (cdi->mask & CDC_CD_R) ? "" : "-R",
1690 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001692 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1693 printk(KERN_CONT " changer w/%d slots", nslots);
1694 else
1695 printk(KERN_CONT " drive");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001696
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001697 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698
1699 return nslots;
1700}
1701
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001702/* standard prep_rq_fn that builds 10 byte cmds */
Jens Axboe165125e2007-07-24 09:28:11 +02001703static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704{
1705 int hard_sect = queue_hardsect_size(q);
1706 long block = (long)rq->hard_sector / (hard_sect >> 9);
1707 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1708
1709 memset(rq->cmd, 0, sizeof(rq->cmd));
1710
1711 if (rq_data_dir(rq) == READ)
1712 rq->cmd[0] = GPCMD_READ_10;
1713 else
1714 rq->cmd[0] = GPCMD_WRITE_10;
1715
1716 /*
1717 * fill in lba
1718 */
1719 rq->cmd[2] = (block >> 24) & 0xff;
1720 rq->cmd[3] = (block >> 16) & 0xff;
1721 rq->cmd[4] = (block >> 8) & 0xff;
1722 rq->cmd[5] = block & 0xff;
1723
1724 /*
1725 * and transfer length
1726 */
1727 rq->cmd[7] = (blocks >> 8) & 0xff;
1728 rq->cmd[8] = blocks & 0xff;
1729 rq->cmd_len = 10;
1730 return BLKPREP_OK;
1731}
1732
1733/*
1734 * Most of the SCSI commands are supported directly by ATAPI devices.
1735 * This transform handles the few exceptions.
1736 */
1737static int ide_cdrom_prep_pc(struct request *rq)
1738{
1739 u8 *c = rq->cmd;
1740
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001741 /* transform 6-byte read/write commands to the 10-byte version */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001742 if (c[0] == READ_6 || c[0] == WRITE_6) {
1743 c[8] = c[4];
1744 c[5] = c[3];
1745 c[4] = c[2];
1746 c[3] = c[1] & 0x1f;
1747 c[2] = 0;
1748 c[1] &= 0xe0;
1749 c[0] += (READ_10 - READ_6);
1750 rq->cmd_len = 10;
1751 return BLKPREP_OK;
1752 }
1753
1754 /*
1755 * it's silly to pretend we understand 6-byte sense commands, just
1756 * reject with ILLEGAL_REQUEST and the caller should take the
1757 * appropriate action
1758 */
1759 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1760 rq->errors = ILLEGAL_REQUEST;
1761 return BLKPREP_KILL;
1762 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001763
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764 return BLKPREP_OK;
1765}
1766
Jens Axboe165125e2007-07-24 09:28:11 +02001767static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001768{
Jens Axboe4aff5e22006-08-10 08:44:47 +02001769 if (blk_fs_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770 return ide_cdrom_prep_fs(q, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001771 else if (blk_pc_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772 return ide_cdrom_prep_pc(rq);
1773
1774 return 0;
1775}
1776
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001777struct cd_list_entry {
1778 const char *id_model;
1779 const char *id_firmware;
1780 unsigned int cd_flags;
1781};
1782
Borislav Petkov5e657a92008-04-26 22:25:15 +02001783#ifdef CONFIG_IDE_PROC_FS
1784static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1785{
1786 unsigned long capacity, sectors_per_frame;
1787
1788 if (cdrom_read_capacity(drive, &capacity, &sectors_per_frame, NULL))
1789 return 0;
1790
1791 return capacity * sectors_per_frame;
1792}
1793
Borislav Petkove5e076a2008-04-26 22:25:15 +02001794static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1795 int count, int *eof, void *data)
Borislav Petkov5e657a92008-04-26 22:25:15 +02001796{
1797 ide_drive_t *drive = data;
1798 int len;
1799
1800 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1801 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1802}
1803
1804static ide_proc_entry_t idecd_proc[] = {
1805 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1806 { NULL, 0, NULL, NULL }
1807};
1808
1809static void ide_cdrom_add_settings(ide_drive_t *drive)
1810{
1811 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
1812 &drive->dsc_overlap, NULL);
1813}
1814#else
1815static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
1816#endif
1817
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001818static const struct cd_list_entry ide_cd_quirks_list[] = {
1819 /* Limit transfer size per interrupt. */
1820 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
1821 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
1822 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1823 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT },
1824 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1825 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
1826 IDE_CD_FLAG_PRE_ATAPI12, },
1827 /* Vertos 300, some versions of this drive like to talk BCD. */
1828 { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, },
1829 /* Vertos 600 ESD. */
1830 { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, },
1831 /*
1832 * Sanyo 3 CD changer uses a non-standard command for CD changing
1833 * (by default standard ATAPI support for CD changers is used).
1834 */
1835 { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD },
1836 { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD },
1837 { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD },
1838 /* Stingray 8X CD-ROM. */
1839 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
1840 /*
1841 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1842 * mode sense page capabilities size, but older drives break.
1843 */
1844 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
1845 { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
1846 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1847 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS },
1848 /*
1849 * Some drives used by Apple don't advertise audio play
1850 * but they do support reading TOC & audio datas.
1851 */
1852 { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1853 { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1854 { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1855 { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
Borislav Petkovacbe44e2008-02-26 21:50:32 +01001856 { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001857 { NULL, NULL, 0 }
1858};
1859
1860static unsigned int ide_cd_flags(struct hd_driveid *id)
1861{
1862 const struct cd_list_entry *cle = ide_cd_quirks_list;
1863
1864 while (cle->id_model) {
1865 if (strcmp(cle->id_model, id->model) == 0 &&
1866 (cle->id_firmware == NULL ||
1867 strstr(id->fw_rev, cle->id_firmware)))
1868 return cle->cd_flags;
1869 cle++;
1870 }
1871
1872 return 0;
1873}
1874
Borislav Petkove5e076a2008-04-26 22:25:15 +02001875static int ide_cdrom_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001876{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001877 struct cdrom_info *cd = drive->driver_data;
1878 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001879 struct hd_driveid *id = drive->id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001880 int nslots;
1881
1882 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1883 blk_queue_dma_alignment(drive->queue, 31);
1884 drive->queue->unplug_delay = (1 * HZ) / 1000;
1885 if (!drive->queue->unplug_delay)
1886 drive->queue->unplug_delay = 1;
1887
1888 drive->special.all = 0;
1889
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001890 cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
1891 ide_cd_flags(id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001892
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001893 if ((id->config & 0x0060) == 0x20)
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001894 cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
Bartlomiej Zolnierkiewiczb8d25de2008-02-01 23:09:19 +01001895
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001896 if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
1897 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001898 cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
1899 IDE_CD_FLAG_TOCADDR_AS_BCD);
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001900 else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
1901 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001902 cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001903 else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001904 /* 3 => use CD in slot 0 */
1905 cdi->sanyo_slot = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001906
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001907 nslots = ide_cdrom_probe_capabilities(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001908
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001909 /* set correct block size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001910 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1911
1912 if (drive->autotune == IDE_TUNE_DEFAULT ||
1913 drive->autotune == IDE_TUNE_AUTO)
1914 drive->dsc_overlap = (drive->next != drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001915
1916 if (ide_cdrom_register(drive, nslots)) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001917 printk(KERN_ERR "%s: %s failed to register device with the"
1918 " cdrom driver.\n", drive->name, __func__);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001919 cd->devinfo.handle = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920 return 1;
1921 }
1922 ide_cdrom_add_settings(drive);
1923 return 0;
1924}
1925
Russell King4031bbe2006-01-06 11:41:00 +00001926static void ide_cd_remove(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001927{
1928 struct cdrom_info *info = drive->driver_data;
1929
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001930 ide_proc_unregister_driver(drive, info->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001931
1932 del_gendisk(info->disk);
1933
1934 ide_cd_put(info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001935}
1936
1937static void ide_cd_release(struct kref *kref)
1938{
1939 struct cdrom_info *info = to_ide_cd(kref);
1940 struct cdrom_device_info *devinfo = &info->devinfo;
1941 ide_drive_t *drive = info->drive;
1942 struct gendisk *g = info->disk;
1943
Jesper Juhl6044ec82005-11-07 01:01:32 -08001944 kfree(info->toc);
Akinobu Mita0a0c4112008-03-26 12:09:02 +01001945 if (devinfo->handle == drive)
1946 unregister_cdrom(devinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947 drive->dsc_overlap = 0;
1948 drive->driver_data = NULL;
1949 blk_queue_prep_rq(drive->queue, NULL);
1950 g->private_data = NULL;
1951 put_disk(g);
1952 kfree(info);
1953}
1954
Russell King4031bbe2006-01-06 11:41:00 +00001955static int ide_cd_probe(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001956
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957static ide_driver_t ide_cdrom_driver = {
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001958 .gen_driver = {
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001959 .owner = THIS_MODULE,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001960 .name = "ide-cdrom",
1961 .bus = &ide_bus_type,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001962 },
Russell King4031bbe2006-01-06 11:41:00 +00001963 .probe = ide_cd_probe,
1964 .remove = ide_cd_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965 .version = IDECD_VERSION,
1966 .media = ide_cdrom,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967 .supports_dsc_overlap = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001968 .do_request = ide_do_rw_cdrom,
1969 .end_request = ide_end_request,
1970 .error = __ide_error,
1971 .abort = __ide_abort,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001972#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 .proc = idecd_proc,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001974#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975};
1976
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001977static int idecd_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978{
1979 struct gendisk *disk = inode->i_bdev->bd_disk;
1980 struct cdrom_info *info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001981 int rc = -ENOMEM;
1982
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001983 info = ide_cd_get(disk);
1984 if (!info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001985 return -ENXIO;
1986
Borislav Petkov968c4962008-04-26 17:36:37 +02001987 rc = cdrom_open(&info->devinfo, inode, file);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988
1989 if (rc < 0)
1990 ide_cd_put(info);
1991
1992 return rc;
1993}
1994
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001995static int idecd_release(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001996{
1997 struct gendisk *disk = inode->i_bdev->bd_disk;
1998 struct cdrom_info *info = ide_cd_g(disk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002000 cdrom_release(&info->devinfo, file);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002001
2002 ide_cd_put(info);
2003
2004 return 0;
2005}
2006
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002007static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2008{
2009 struct packet_command cgc;
2010 char buffer[16];
2011 int stat;
2012 char spindown;
2013
2014 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2015 return -EFAULT;
2016
2017 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2018
2019 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2020 if (stat)
2021 return stat;
2022
2023 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2024 return cdrom_mode_select(cdi, &cgc);
2025}
2026
2027static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2028{
2029 struct packet_command cgc;
2030 char buffer[16];
2031 int stat;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002032 char spindown;
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002033
2034 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2035
2036 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2037 if (stat)
2038 return stat;
2039
2040 spindown = buffer[11] & 0x0f;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002041 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002042 return -EFAULT;
2043 return 0;
2044}
2045
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002046static int idecd_ioctl(struct inode *inode, struct file *file,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047 unsigned int cmd, unsigned long arg)
2048{
2049 struct block_device *bdev = inode->i_bdev;
2050 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2051 int err;
2052
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002053 switch (cmd) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002054 case CDROMSETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002055 return idecd_set_spindown(&info->devinfo, arg);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002056 case CDROMGETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002057 return idecd_get_spindown(&info->devinfo, arg);
2058 default:
2059 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002060 }
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002061
2062 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063 if (err == -EINVAL)
2064 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2065
2066 return err;
2067}
2068
2069static int idecd_media_changed(struct gendisk *disk)
2070{
2071 struct cdrom_info *info = ide_cd_g(disk);
2072 return cdrom_media_changed(&info->devinfo);
2073}
2074
2075static int idecd_revalidate_disk(struct gendisk *disk)
2076{
2077 struct cdrom_info *info = ide_cd_g(disk);
2078 struct request_sense sense;
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01002079
2080 ide_cd_read_toc(info->drive, &sense);
2081
Linus Torvalds1da177e2005-04-16 15:20:36 -07002082 return 0;
2083}
2084
2085static struct block_device_operations idecd_ops = {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002086 .owner = THIS_MODULE,
2087 .open = idecd_open,
2088 .release = idecd_release,
2089 .ioctl = idecd_ioctl,
2090 .media_changed = idecd_media_changed,
2091 .revalidate_disk = idecd_revalidate_disk
Linus Torvalds1da177e2005-04-16 15:20:36 -07002092};
2093
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02002094/* module options */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002095static char *ignore;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002096
2097module_param(ignore, charp, 0400);
2098MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2099
Russell King4031bbe2006-01-06 11:41:00 +00002100static int ide_cd_probe(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101{
2102 struct cdrom_info *info;
2103 struct gendisk *g;
2104 struct request_sense sense;
2105
2106 if (!strstr("ide-cdrom", drive->driver_req))
2107 goto failed;
2108 if (!drive->present)
2109 goto failed;
2110 if (drive->media != ide_cdrom && drive->media != ide_optical)
2111 goto failed;
2112 /* skip drives that we were told to ignore */
2113 if (ignore != NULL) {
2114 if (strstr(ignore, drive->name)) {
Borislav Petkov83c85652008-04-26 22:25:15 +02002115 printk(KERN_INFO "ide-cd: ignoring drive %s\n",
2116 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002117 goto failed;
2118 }
2119 }
2120 if (drive->scsi) {
Borislav Petkov83c85652008-04-26 22:25:15 +02002121 printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi "
2122 "emulation.\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002123 goto failed;
2124 }
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -08002125 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126 if (info == NULL) {
Borislav Petkov83c85652008-04-26 22:25:15 +02002127 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
2128 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002129 goto failed;
2130 }
2131
2132 g = alloc_disk(1 << PARTN_BITS);
2133 if (!g)
2134 goto out_free_cd;
2135
2136 ide_init_disk(g, drive);
2137
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02002138 ide_proc_register_driver(drive, &ide_cdrom_driver);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002139
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140 kref_init(&info->kref);
2141
2142 info->drive = drive;
2143 info->driver = &ide_cdrom_driver;
2144 info->disk = g;
2145
2146 g->private_data = &info->driver;
2147
2148 drive->driver_data = info;
2149
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150 g->minors = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151 g->driverfs_dev = &drive->gendev;
2152 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2153 if (ide_cdrom_setup(drive)) {
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02002154 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
Bartlomiej Zolnierkiewicz05017db2007-12-24 15:23:43 +01002155 ide_cd_release(&info->kref);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156 goto failed;
2157 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002158
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01002159 ide_cd_read_toc(drive, &sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002160 g->fops = &idecd_ops;
2161 g->flags |= GENHD_FL_REMOVABLE;
2162 add_disk(g);
2163 return 0;
2164
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165out_free_cd:
2166 kfree(info);
2167failed:
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002168 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169}
2170
2171static void __exit ide_cdrom_exit(void)
2172{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002173 driver_unregister(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174}
Bartlomiej Zolnierkiewicz17514e82005-11-19 22:24:35 +01002175
2176static int __init ide_cdrom_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002178 return driver_register(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179}
2180
Kay Sievers263756e2005-12-12 18:03:44 +01002181MODULE_ALIAS("ide:*m-cdrom*");
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +01002182MODULE_ALIAS("ide-cd");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002183module_init(ide_cdrom_init);
2184module_exit(ide_cdrom_exit);
2185MODULE_LICENSE("GPL");