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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;
Alan Coxdbe217a2006-06-25 05:47:44 -0700145 struct cdrom_info *info = drive->driver_data;
146
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 if (!cdrom_log_sense(drive, failed_command, sense))
148 return;
149
150 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200151 * If a read toc is executed for a CD-R or CD-RW medium where the first
152 * toc has not been recorded yet, it will fail with 05/24/00 (which is a
153 * confusing error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 */
155 if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
156 if (sense->sense_key == 0x05 && sense->asc == 0x24)
157 return;
158
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200159 /* current error */
160 if (sense->error_code == 0x70) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200161 switch (sense->sense_key) {
Alan Coxdbe217a2006-06-25 05:47:44 -0700162 case MEDIUM_ERROR:
163 case VOLUME_OVERFLOW:
164 case ILLEGAL_REQUEST:
165 if (!sense->valid)
166 break;
167 if (failed_command == NULL ||
168 !blk_fs_request(failed_command))
169 break;
170 sector = (sense->information[0] << 24) |
171 (sense->information[1] << 16) |
172 (sense->information[2] << 8) |
173 (sense->information[3]);
174
Alan Coxdbe217a2006-06-25 05:47:44 -0700175 if (drive->queue->hardsect_size == 2048)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200176 /* device sector size is 2K */
177 sector <<= 2;
Roel Kluineee49292008-04-28 23:44:43 +0200178
179 bio_sectors = max(bio_sectors(failed_command->bio), 4U);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200180 sector &= ~(bio_sectors - 1);
Alan Coxdbe217a2006-06-25 05:47:44 -0700181
Alan Coxdbe217a2006-06-25 05:47:44 -0700182 if (sector < get_capacity(info->disk) &&
Borislav Petkove5e076a2008-04-26 22:25:15 +0200183 drive->probed_capacity - sector < 4 * 75)
Alan Coxdbe217a2006-06-25 05:47:44 -0700184 set_capacity(info->disk, sector);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200185 }
186 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +0100188 ide_cd_log_error(drive->name, failed_command, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189}
190
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
192 struct request *failed_command)
193{
194 struct cdrom_info *info = drive->driver_data;
195 struct request *rq = &info->request_sense_request;
196
197 if (sense == NULL)
198 sense = &info->sense_data;
199
200 /* stuff the sense request in front of our current request */
FUJITA Tomonoried820f12008-07-15 21:21:45 +0200201 blk_rq_init(NULL, rq);
202 rq->cmd_type = REQ_TYPE_ATA_PC;
203 rq->rq_disk = info->disk;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
205 rq->data = sense;
206 rq->cmd[0] = GPCMD_REQUEST_SENSE;
Borislav Petkove5e076a2008-04-26 22:25:15 +0200207 rq->cmd[4] = 18;
208 rq->data_len = 18;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
Jens Axboe4aff5e22006-08-10 08:44:47 +0200210 rq->cmd_type = REQ_TYPE_SENSE;
Bartlomiej Zolnierkiewicze8a96aa2008-07-15 21:21:41 +0200211 rq->cmd_flags |= REQ_PREEMPT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
213 /* NOTE! Save the failed command in "rq->buffer" */
214 rq->buffer = (void *) failed_command;
215
FUJITA Tomonori63f5abb2008-07-15 21:21:51 +0200216 ide_do_drive_cmd(drive, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217}
218
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200219static void cdrom_end_request(ide_drive_t *drive, int uptodate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220{
221 struct request *rq = HWGROUP(drive)->rq;
222 int nsectors = rq->hard_cur_sectors;
223
Jens Axboe4aff5e22006-08-10 08:44:47 +0200224 if (blk_sense_request(rq) && uptodate) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 /*
Jens Axboe4aff5e22006-08-10 08:44:47 +0200226 * For REQ_TYPE_SENSE, "rq->buffer" points to the original
227 * failed request
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 */
229 struct request *failed = (struct request *) rq->buffer;
230 struct cdrom_info *info = drive->driver_data;
231 void *sense = &info->sense_data;
232 unsigned long flags;
233
234 if (failed) {
235 if (failed->sense) {
236 sense = failed->sense;
237 failed->sense_len = rq->sense_len;
238 }
Alan Coxdbe217a2006-06-25 05:47:44 -0700239 cdrom_analyze_sense_data(drive, failed, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200241 * now end the failed request
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 */
Alan Coxdbe217a2006-06-25 05:47:44 -0700243 if (blk_fs_request(failed)) {
244 if (ide_end_dequeued_request(drive, failed, 0,
245 failed->hard_nr_sectors))
246 BUG();
247 } else {
248 spin_lock_irqsave(&ide_lock, flags);
Kiyoshi Ueda5e36bb62008-01-28 10:34:20 +0100249 if (__blk_end_request(failed, -EIO,
250 failed->data_len))
251 BUG();
Alan Coxdbe217a2006-06-25 05:47:44 -0700252 spin_unlock_irqrestore(&ide_lock, flags);
253 }
254 } else
255 cdrom_analyze_sense_data(drive, NULL, sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 }
257
258 if (!rq->current_nr_sectors && blk_fs_request(rq))
259 uptodate = 1;
260 /* make sure it's fully ended */
261 if (blk_pc_request(rq))
262 nsectors = (rq->data_len + 511) >> 9;
263 if (!nsectors)
264 nsectors = 1;
265
266 ide_end_request(drive, uptodate, nsectors);
267}
268
Borislav Petkov83c85652008-04-26 22:25:15 +0200269static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
Alan Coxdbe217a2006-06-25 05:47:44 -0700270{
Borislav Petkov83c85652008-04-26 22:25:15 +0200271 if (st & 0x80)
Alan Coxdbe217a2006-06-25 05:47:44 -0700272 return;
Borislav Petkov83c85652008-04-26 22:25:15 +0200273 ide_dump_status(drive, msg, st);
Alan Coxdbe217a2006-06-25 05:47:44 -0700274}
275
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200276/*
277 * Returns:
278 * 0: if the request should be continued.
279 * 1: if the request was ended.
280 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
282{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200283 ide_hwif_t *hwif = drive->hwif;
284 struct request *rq = hwif->hwgroup->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 int stat, err, sense_key;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200286
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200287 /* check for errors */
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200288 stat = hwif->read_status(hwif);
Bartlomiej Zolnierkiewiczc47137a2008-02-06 02:57:51 +0100289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 if (stat_ret)
291 *stat_ret = stat;
292
293 if (OK_STAT(stat, good_stat, BAD_R_STAT))
294 return 0;
295
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200296 /* get the IDE error register */
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +0100297 err = ide_read_error(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 sense_key = err >> 4;
299
300 if (rq == NULL) {
Borislav Petkove5e076a2008-04-26 22:25:15 +0200301 printk(KERN_ERR "%s: missing rq in %s\n",
302 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 return 1;
304 }
305
Jens Axboe4aff5e22006-08-10 08:44:47 +0200306 if (blk_sense_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200307 /*
308 * We got an error trying to get sense info from the drive
309 * (probably while trying to recover from a former error).
310 * Just give up.
311 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200312 rq->cmd_flags |= REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 cdrom_end_request(drive, 0);
314 ide_error(drive, "request sense failure", stat);
315 return 1;
316
Jens Axboe8770c012006-10-12 17:24:52 +0200317 } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 /* All other functions, except for READ. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319
320 /*
321 * if we have an error, pass back CHECK_CONDITION as the
322 * scsi status byte
323 */
Jens Axboeb7156732006-11-13 18:05:02 +0100324 if (blk_pc_request(rq) && !rq->errors)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 rq->errors = SAM_STAT_CHECK_CONDITION;
326
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200327 /* check for tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 if (sense_key == NOT_READY) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200329 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200331 /* check for media change */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200332 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 return 0;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200334 } else if (sense_key == ILLEGAL_REQUEST &&
335 rq->cmd[0] == GPCMD_START_STOP_UNIT) {
336 /*
337 * Don't print error message for this condition--
338 * SFF8090i indicates that 5/24/00 is the correct
339 * response to a request to close the tray if the
340 * drive doesn't have that capability.
341 * cdrom_log_sense() knows this!
342 */
Jens Axboe4aff5e22006-08-10 08:44:47 +0200343 } else if (!(rq->cmd_flags & REQ_QUIET)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200344 /* otherwise, print an error */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 ide_dump_status(drive, "packet command error", stat);
346 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200347
Jens Axboe4aff5e22006-08-10 08:44:47 +0200348 rq->cmd_flags |= REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
350 /*
351 * instead of playing games with moving completions around,
352 * remove failed request completely and end it when the
353 * request sense has completed
354 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100355 goto end_request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
357 } else if (blk_fs_request(rq)) {
358 int do_end_request = 0;
359
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200360 /* handle errors from READ and WRITE requests */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
362 if (blk_noretry_request(rq))
363 do_end_request = 1;
364
365 if (sense_key == NOT_READY) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200366 /* tray open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 if (rq_data_dir(rq) == READ) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200368 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200370 /* fail the request */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200371 printk(KERN_ERR "%s: tray open\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 do_end_request = 1;
373 } else {
374 struct cdrom_info *info = drive->driver_data;
375
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200376 /*
377 * Allow the drive 5 seconds to recover, some
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 * devices will return this error while flushing
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200379 * data from cache.
380 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 if (!rq->errors)
Borislav Petkov83c85652008-04-26 22:25:15 +0200382 info->write_timeout = jiffies +
383 ATAPI_WAIT_WRITE_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 rq->errors = 1;
385 if (time_after(jiffies, info->write_timeout))
386 do_end_request = 1;
387 else {
388 unsigned long flags;
389
390 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200391 * take a breather relying on the unplug
392 * timer to kick us again
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 */
394 spin_lock_irqsave(&ide_lock, flags);
395 blk_plug_device(drive->queue);
Borislav Petkov83c85652008-04-26 22:25:15 +0200396 spin_unlock_irqrestore(&ide_lock,
397 flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 return 1;
399 }
400 }
401 } else if (sense_key == UNIT_ATTENTION) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200402 /* media change */
Borislav Petkove5e076a2008-04-26 22:25:15 +0200403 cdrom_saw_media_change(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200405 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200406 * Arrange to retry the request but be sure to give up
407 * if we've retried too many times.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200408 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 if (++rq->errors > ERROR_MAX)
410 do_end_request = 1;
411 } else if (sense_key == ILLEGAL_REQUEST ||
412 sense_key == DATA_PROTECT) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200413 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200414 * No point in retrying after an illegal request or data
415 * protect error.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200416 */
417 ide_dump_status_no_sense(drive, "command error", stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 do_end_request = 1;
419 } else if (sense_key == MEDIUM_ERROR) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200420 /*
421 * No point in re-trying a zillion times on a bad
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200422 * sector. If we got here the error is not correctable.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200423 */
Borislav Petkov83c85652008-04-26 22:25:15 +0200424 ide_dump_status_no_sense(drive,
425 "media error (bad sector)",
426 stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 do_end_request = 1;
428 } else if (sense_key == BLANK_CHECK) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200429 /* disk appears blank ?? */
Borislav Petkov83c85652008-04-26 22:25:15 +0200430 ide_dump_status_no_sense(drive, "media error (blank)",
431 stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 do_end_request = 1;
433 } else if ((err & ~ABRT_ERR) != 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200434 /* go to the default handler for other errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 ide_error(drive, "cdrom_decode_status", stat);
436 return 1;
437 } else if ((++rq->errors > ERROR_MAX)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200438 /* we've racked up too many retries, abort */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 do_end_request = 1;
440 }
441
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200442 /*
443 * End a request through request sense analysis when we have
444 * sense data. We need this in order to perform end of media
445 * processing.
446 */
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100447 if (do_end_request)
448 goto end_request;
Alan Coxdbe217a2006-06-25 05:47:44 -0700449
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100450 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200451 * If we got a CHECK_CONDITION status, queue
452 * a request sense command.
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100453 */
454 if (stat & ERR_STAT)
455 cdrom_queue_request_sense(drive, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 } else {
457 blk_dump_rq_flags(rq, "ide-cd: bad rq");
458 cdrom_end_request(drive, 0);
459 }
460
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200461 /* retry, or handle the next request */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 return 1;
Bartlomiej Zolnierkiewiczbbb89e32008-02-01 23:09:28 +0100463
464end_request:
465 if (stat & ERR_STAT) {
466 unsigned long flags;
467
468 spin_lock_irqsave(&ide_lock, flags);
469 blkdev_dequeue_request(rq);
470 HWGROUP(drive)->rq = NULL;
471 spin_unlock_irqrestore(&ide_lock, flags);
472
473 cdrom_queue_request_sense(drive, rq->sense, rq);
474 } else
475 cdrom_end_request(drive, 0);
476
477 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478}
479
480static int cdrom_timer_expiry(ide_drive_t *drive)
481{
482 struct request *rq = HWGROUP(drive)->rq;
483 unsigned long wait = 0;
484
485 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200486 * Some commands are *slow* and normally take a long time to complete.
487 * Usually we can use the ATAPI "disconnect" to bypass this, but not all
488 * commands/drives support that. Let ide_timer_expiry keep polling us
489 * for these.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 */
491 switch (rq->cmd[0]) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200492 case GPCMD_BLANK:
493 case GPCMD_FORMAT_UNIT:
494 case GPCMD_RESERVE_RZONE_TRACK:
495 case GPCMD_CLOSE_TRACK:
496 case GPCMD_FLUSH_CACHE:
497 wait = ATAPI_WAIT_PC;
498 break;
499 default:
500 if (!(rq->cmd_flags & REQ_QUIET))
Borislav Petkov83c85652008-04-26 22:25:15 +0200501 printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n",
502 rq->cmd[0]);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200503 wait = 0;
504 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 }
506 return wait;
507}
508
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200509/*
510 * Set up the device registers for transferring a packet command on DEV,
511 * expecting to later transfer XFERLEN bytes. HANDLER is the routine
512 * which actually transfers the command to the drive. If this is a
513 * drq_interrupt device, this routine will arrange for HANDLER to be
514 * called when the interrupt from the drive arrives. Otherwise, HANDLER
515 * will be called immediately after the drive is prepared for the transfer.
516 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
518 int xferlen,
519 ide_handler_t *handler)
520{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 struct cdrom_info *info = drive->driver_data;
522 ide_hwif_t *hwif = drive->hwif;
523
Bartlomiej Zolnierkiewicz3a6a3542008-01-25 22:17:13 +0100524 /* FIXME: for Virtual DMA we must check harder */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 if (info->dma)
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200526 info->dma = !hwif->dma_ops->dma_setup(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200528 /* set up the controller registers */
Bartlomiej Zolnierkiewicz9a410e72008-07-15 21:21:48 +0200529 ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL,
530 xferlen, info->dma);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +0100531
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +0100532 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
Albert Leef0dd8712007-02-17 02:40:21 +0100533 /* waiting for CDB interrupt, not DMA yet. */
534 if (info->dma)
535 drive->waiting_for_dma = 0;
536
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 /* packet command */
Borislav Petkov83c85652008-04-26 22:25:15 +0200538 ide_execute_command(drive, WIN_PACKETCMD, handler,
539 ATAPI_WAIT_PC, cdrom_timer_expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 return ide_started;
541 } else {
Bartlomiej Zolnierkiewicz1fc14252008-04-28 23:44:39 +0200542 ide_execute_pkt_cmd(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
544 return (*handler) (drive);
545 }
546}
547
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200548/*
549 * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device
550 * registers must have already been prepared by cdrom_start_packet_command.
551 * HANDLER is the interrupt handler to call when the command completes or
552 * there's data ready.
553 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554#define ATAPI_MIN_CDB_BYTES 12
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200555static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 struct request *rq,
557 ide_handler_t *handler)
558{
559 ide_hwif_t *hwif = drive->hwif;
560 int cmd_len;
561 struct cdrom_info *info = drive->driver_data;
562 ide_startstop_t startstop;
563
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +0100564 if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200565 /*
566 * Here we should have been called after receiving an interrupt
567 * from the device. DRQ should how be set.
568 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200570 /* check for errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 if (cdrom_decode_status(drive, DRQ_STAT, NULL))
572 return ide_stopped;
Albert Leef0dd8712007-02-17 02:40:21 +0100573
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200574 /* ok, next interrupt will be DMA interrupt */
Albert Leef0dd8712007-02-17 02:40:21 +0100575 if (info->dma)
576 drive->waiting_for_dma = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200578 /* otherwise, we must wait for DRQ to get set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 if (ide_wait_stat(&startstop, drive, DRQ_STAT,
580 BUSY_STAT, WAIT_READY))
581 return startstop;
582 }
583
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200584 /* arm the interrupt handler */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
586
587 /* ATAPI commands get padded out to 12 bytes minimum */
588 cmd_len = COMMAND_SIZE(rq->cmd[0]);
589 if (cmd_len < ATAPI_MIN_CDB_BYTES)
590 cmd_len = ATAPI_MIN_CDB_BYTES;
591
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200592 /* send the command to the device */
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200593 hwif->output_data(drive, NULL, rq->cmd, cmd_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200595 /* start the DMA if need be */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 if (info->dma)
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200597 hwif->dma_ops->dma_start(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598
599 return ide_started;
600}
601
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200602/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 * Check the contents of the interrupt reason register from the cdrom
604 * and attempt to recover if there are problems. Returns 0 if everything's
605 * ok; nonzero if the request has been terminated.
606 */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100607static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
608 int len, int ireason, int rw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609{
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200610 ide_hwif_t *hwif = drive->hwif;
611
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100612 /*
613 * ireason == 0: the drive wants to receive data from us
614 * ireason == 2: the drive is expecting to transfer data to us
615 */
616 if (ireason == (!rw << 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 return 0;
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100618 else if (ireason == (rw << 1)) {
Bartlomiej Zolnierkiewicz5a5222d2008-02-01 23:09:17 +0100619
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200620 /* whoops... */
Bartlomiej Zolnierkiewicz35379c02007-12-24 15:23:43 +0100621 printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200622 drive->name, __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
Borislav Petkovae8789f2008-07-16 20:33:45 +0200624 ide_pad_transfer(drive, rw, len);
Bartlomiej Zolnierkiewicz0d6f7e32008-02-01 23:09:28 +0100625 } else if (rw == 0 && ireason == 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200626 /*
627 * Some drives (ASUS) seem to tell us that status info is
628 * available. Just get it and ignore.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 */
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200630 (void)hwif->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 return 0;
632 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200633 /* drive wants a command packet, or invalid ireason... */
Bartlomiej Zolnierkiewicz35379c02007-12-24 15:23:43 +0100634 printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200635 drive->name, __func__, ireason);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 }
637
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100638 if (rq->cmd_type == REQ_TYPE_ATA_PC)
639 rq->cmd_flags |= REQ_FAILED;
640
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 cdrom_end_request(drive, 0);
642 return -1;
643}
644
645/*
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100646 * Assume that the drive will always provide data in multiples of at least
647 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.
648 */
649static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
650{
651 struct cdrom_info *cd = drive->driver_data;
652
653 if ((len % SECTOR_SIZE) == 0)
654 return 0;
655
656 printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200657 drive->name, __func__, len);
Bartlomiej Zolnierkiewicz64814f22008-02-01 23:09:26 +0100658
659 if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
660 printk(KERN_ERR " This drive is not supported by "
661 "this version of the driver\n");
662 else {
663 printk(KERN_ERR " Trying to limit transfer sizes\n");
664 cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
665 }
666
667 return 1;
668}
669
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100670static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
Bartlomiej Zolnierkiewicz94f5a862008-02-01 23:09:26 +0100671
Borislav Petkov90eb8082008-07-16 20:33:46 +0200672static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,
673 struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674{
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100675 if (rq_data_dir(rq) == READ) {
676 unsigned short sectors_per_frame =
677 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
678 int nskip = rq->sector & (sectors_per_frame - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100680 /*
681 * If the requested sector doesn't start on a frame boundary,
682 * we must adjust the start of the transfer so that it does,
683 * and remember to skip the first few sectors.
684 *
685 * If the rq->current_nr_sectors field is larger than the size
686 * of the buffer, it will mean that we're to skip a number of
687 * sectors equal to the amount by which rq->current_nr_sectors
688 * is larger than the buffer size.
689 */
690 if (nskip > 0) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200691 /* sanity check... */
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100692 if (rq->current_nr_sectors !=
693 bio_cur_sectors(rq->bio)) {
694 printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200695 drive->name, __func__,
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100696 rq->current_nr_sectors);
697 cdrom_end_request(drive, 0);
698 return ide_stopped;
699 }
700 rq->current_nr_sectors += nskip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702 }
Bartlomiej Zolnierkiewicz29f3aac2008-02-01 23:09:27 +0100703#if 0
704 else
705 /* the immediate bit */
706 rq->cmd[1] = 1 << 3;
707#endif
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200708 /* set up the command */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 rq->timeout = ATAPI_WAIT_PC;
710
Borislav Petkov90eb8082008-07-16 20:33:46 +0200711 return ide_started;
712}
713
714/*
715 * Routine to send a read/write packet command to the drive. This is usually
716 * called directly from cdrom_start_{read,write}(). However, for drq_interrupt
717 * devices, it is called from an interrupt when the drive is ready to accept
718 * the command.
719 */
720static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
721{
722 struct request *rq = drive->hwif->hwgroup->rq;
723
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200724 /* send the command to the drive and return */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100725 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726}
727
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728#define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
729#define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
730#define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
731
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200732static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733{
734 struct cdrom_info *info = drive->driver_data;
735 int stat;
736 static int retry = 10;
737
738 if (cdrom_decode_status(drive, 0, &stat))
739 return ide_stopped;
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +0100740
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +0100741 info->cd_flags |= IDE_CD_FLAG_SEEKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742
743 if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200744 if (--retry == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 drive->dsc_overlap = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 }
747 return ide_stopped;
748}
749
Borislav Petkove529c602008-07-16 20:33:46 +0200750static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 sector_t frame = rq->sector;
753
754 sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
755
FUJITA Tomonorid34c87e2008-04-29 14:37:52 +0200756 memset(rq->cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 rq->cmd[0] = GPCMD_SEEK;
758 put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
759
760 rq->timeout = ATAPI_WAIT_PC;
Borislav Petkove529c602008-07-16 20:33:46 +0200761}
762
763static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
764{
765 struct request *rq = drive->hwif->hwgroup->rq;
766
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767 return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
768}
769
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200770/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200771 * Fix up a possibly partially-processed request so that we can start it over
772 * entirely, or even put it back on the request queue.
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +0200773 */
774static void restore_request(struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775{
776 if (rq->buffer != bio_data(rq->bio)) {
Borislav Petkov83c85652008-04-26 22:25:15 +0200777 sector_t n =
778 (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779
780 rq->buffer = bio_data(rq->bio);
781 rq->nr_sectors += n;
782 rq->sector -= n;
783 }
Borislav Petkov83c85652008-04-26 22:25:15 +0200784 rq->current_nr_sectors = bio_cur_sectors(rq->bio);
785 rq->hard_cur_sectors = rq->current_nr_sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 rq->hard_nr_sectors = rq->nr_sectors;
787 rq->hard_sector = rq->sector;
788 rq->q->prep_rq_fn(rq->q, rq);
789}
790
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200791/*
792 * All other packet commands.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 */
Bartlomiej Zolnierkiewicz8ee69f52008-02-01 23:09:25 +0100794static void ide_cd_request_sense_fixup(struct request *rq)
795{
796 /*
797 * Some of the trailing request sense fields are optional,
798 * and some drives don't send them. Sigh.
799 */
800 if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
801 rq->data_len > 0 && rq->data_len <= 5)
802 while (rq->data_len > 0) {
803 *(u8 *)rq->data++ = 0;
804 --rq->data_len;
805 }
806}
807
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200808int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
809 int write, void *buffer, unsigned *bufflen,
810 struct request_sense *sense, int timeout,
811 unsigned int cmd_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812{
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200813 struct cdrom_info *info = drive->driver_data;
814 struct request_sense local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 int retries = 10;
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200816 unsigned int flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200818 if (!sense)
819 sense = &local_sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200821 /* start of retry loop */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 do {
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200823 struct request *rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200826 rq = blk_get_request(drive->queue, write, __GFP_WAIT);
827
828 memcpy(rq->cmd, cmd, BLK_MAX_CDB);
829 rq->cmd_type = REQ_TYPE_ATA_PC;
830 rq->sense = sense;
831 rq->cmd_flags |= cmd_flags;
832 rq->timeout = timeout;
833 if (buffer) {
834 rq->data = buffer;
835 rq->data_len = *bufflen;
836 }
837
838 error = blk_execute_rq(drive->queue, info->disk, rq, 0);
839
840 if (buffer)
841 *bufflen = rq->data_len;
842
843 flags = rq->cmd_flags;
844 blk_put_request(rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200846 /*
847 * FIXME: we should probably abort/retry or something in case of
848 * failure.
849 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200850 if (flags & REQ_FAILED) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200851 /*
852 * The request failed. Retry if it was due to a unit
853 * attention status (usually means media was changed).
854 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200855 struct request_sense *reqbuf = sense;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856
857 if (reqbuf->sense_key == UNIT_ATTENTION)
858 cdrom_saw_media_change(drive);
859 else if (reqbuf->sense_key == NOT_READY &&
860 reqbuf->asc == 4 && reqbuf->ascq != 4) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200861 /*
862 * The drive is in the process of loading
863 * a disk. Retry, but wait a little to give
864 * the drive time to complete the load.
865 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 ssleep(2);
867 } else {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200868 /* otherwise, don't retry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869 retries = 0;
870 }
871 --retries;
872 }
873
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200874 /* end of retry loop */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200875 } while ((flags & REQ_FAILED) && retries >= 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200877 /* return an error if the command failed */
FUJITA Tomonori5f828542008-07-15 21:21:42 +0200878 return (flags & REQ_FAILED) ? -EIO : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879}
880
881/*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200882 * Called from blk_end_request_callback() after the data of the request is
883 * completed and before the request itself is completed. By returning value '1',
884 * blk_end_request_callback() returns immediately without completing it.
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500885 */
886static int cdrom_newpc_intr_dummy_cb(struct request *rq)
887{
888 return 1;
889}
890
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
892{
Bartlomiej Zolnierkiewicz23579a22008-04-18 00:46:26 +0200893 ide_hwif_t *hwif = drive->hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894 struct cdrom_info *info = drive->driver_data;
895 struct request *rq = HWGROUP(drive)->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 xfer_func_t *xferfunc;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100897 ide_expiry_t *expiry = NULL;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100898 int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0;
899 int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
900 unsigned int timeout;
901 u8 lowcyl, highcyl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200903 /* check for errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 dma = info->dma;
905 if (dma) {
906 info->dma = 0;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200907 dma_error = hwif->dma_ops->dma_end(drive);
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100908 if (dma_error) {
909 printk(KERN_ERR "%s: DMA %s error\n", drive->name,
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100910 write ? "write" : "read");
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100911 ide_dma_off(drive);
912 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 }
914
915 if (cdrom_decode_status(drive, 0, &stat))
916 return ide_stopped;
917
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200918 /* using dma, transfer is complete now */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 if (dma) {
Bartlomiej Zolnierkiewiczeba15fb2008-02-01 23:09:17 +0100920 if (dma_error)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 return ide_error(drive, "dma error", stat);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100922 if (blk_fs_request(rq)) {
923 ide_end_request(drive, 1, rq->nr_sectors);
924 return ide_stopped;
925 }
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100926 goto end_request;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 }
928
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200929 /* ok we fall to pio :/ */
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200930 ireason = hwif->INB(hwif->io_ports.nsect_addr) & 0x3;
931 lowcyl = hwif->INB(hwif->io_ports.lbam_addr);
932 highcyl = hwif->INB(hwif->io_ports.lbah_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933
934 len = lowcyl + (256 * highcyl);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100935
936 thislen = blk_fs_request(rq) ? len : rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 if (thislen > len)
938 thislen = len;
939
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200940 /* If DRQ is clear, the command has completed. */
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500941 if ((stat & DRQ_STAT) == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100942 if (blk_fs_request(rq)) {
943 /*
944 * If we're not done reading/writing, complain.
945 * Otherwise, complete the command normally.
946 */
947 uptodate = 1;
948 if (rq->current_nr_sectors > 0) {
949 printk(KERN_ERR "%s: %s: data underrun "
950 "(%d blocks)\n",
Paolo Ciarrocchi177773e2008-04-26 17:36:42 +0200951 drive->name, __func__,
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100952 rq->current_nr_sectors);
953 if (!write)
954 rq->cmd_flags |= REQ_FAILED;
955 uptodate = 0;
956 }
957 cdrom_end_request(drive, uptodate);
958 return ide_stopped;
959 } else if (!blk_pc_request(rq)) {
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100960 ide_cd_request_sense_fixup(rq);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200961 /* complain if we still have data left to transfer */
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100962 uptodate = rq->data_len ? 0 : 1;
963 }
964 goto end_request;
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -0500965 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +0200967 /* check which way to transfer data */
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100968 if (ide_cd_check_ireason(drive, rq, len, ireason, write))
969 return ide_stopped;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100970
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100971 if (blk_fs_request(rq)) {
972 if (write == 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100973 int nskip;
974
975 if (ide_cd_check_transfer_size(drive, len)) {
976 cdrom_end_request(drive, 0);
977 return ide_stopped;
978 }
979
980 /*
981 * First, figure out if we need to bit-bucket
982 * any of the leading sectors.
983 */
984 nskip = min_t(int, rq->current_nr_sectors
985 - bio_cur_sectors(rq->bio),
986 thislen >> 9);
987 if (nskip > 0) {
Borislav Petkovae8789f2008-07-16 20:33:45 +0200988 ide_pad_transfer(drive, write, nskip << 9);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +0100989 rq->current_nr_sectors -= nskip;
990 thislen -= (nskip << 9);
991 }
992 }
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100993 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100995 if (ireason == 0) {
996 write = 1;
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200997 xferfunc = hwif->output_data;
Bartlomiej Zolnierkiewicz9f10d9e2008-02-26 21:50:35 +0100998 } else {
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +0100999 write = 0;
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +02001000 xferfunc = hwif->input_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 }
1002
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001003 /* transfer data */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004 while (thislen > 0) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001005 u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
Bartlomiej Zolnierkiewicza11e77d2008-02-01 23:09:27 +01001006 int blen = rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001008 /* bio backed? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 if (rq->bio) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001010 if (blk_fs_request(rq)) {
1011 ptr = rq->buffer;
1012 blen = rq->current_nr_sectors << 9;
1013 } else {
1014 ptr = bio_data(rq->bio);
1015 blen = bio_iovec(rq->bio)->bv_len;
1016 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 }
1018
1019 if (!ptr) {
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001020 if (blk_fs_request(rq) && !write)
1021 /*
Borislav Petkov968c4962008-04-26 17:36:37 +02001022 * If the buffers are full, pipe the rest into
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001023 * oblivion.
1024 */
Borislav Petkovae8789f2008-07-16 20:33:45 +02001025 ide_pad_transfer(drive, 0, thislen);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001026 else {
1027 printk(KERN_ERR "%s: confused, missing data\n",
1028 drive->name);
1029 blk_dump_rq_flags(rq, rq_data_dir(rq)
1030 ? "cdrom_newpc_intr, write"
1031 : "cdrom_newpc_intr, read");
1032 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033 break;
1034 }
1035
1036 if (blen > thislen)
1037 blen = thislen;
1038
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +02001039 xferfunc(drive, NULL, ptr, blen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040
1041 thislen -= blen;
1042 len -= blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001044 if (blk_fs_request(rq)) {
1045 rq->buffer += blen;
1046 rq->nr_sectors -= (blen >> 9);
1047 rq->current_nr_sectors -= (blen >> 9);
1048 rq->sector += (blen >> 9);
1049
1050 if (rq->current_nr_sectors == 0 && rq->nr_sectors)
1051 cdrom_end_request(drive, 1);
1052 } else {
1053 rq->data_len -= blen;
1054
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -05001055 /*
1056 * The request can't be completed until DRQ is cleared.
1057 * So complete the data, but don't complete the request
1058 * using the dummy function for the callback feature
1059 * of blk_end_request_callback().
1060 */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001061 if (rq->bio)
1062 blk_end_request_callback(rq, 0, blen,
Kiyoshi Uedaaaa04c22007-12-11 17:51:23 -05001063 cdrom_newpc_intr_dummy_cb);
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001064 else
1065 rq->data += blen;
1066 }
Andreas Schwabbcd88ac2008-02-26 21:50:35 +01001067 if (!write && blk_sense_request(rq))
1068 rq->sense_len += blen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069 }
1070
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001071 /* pad, if necessary */
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001072 if (!blk_fs_request(rq) && len > 0)
Borislav Petkovae8789f2008-07-16 20:33:45 +02001073 ide_pad_transfer(drive, write, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001075 if (blk_pc_request(rq)) {
1076 timeout = rq->timeout;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001077 } else {
1078 timeout = ATAPI_WAIT_PC;
Bartlomiej Zolnierkiewicz0041e7c2008-02-01 23:09:28 +01001079 if (!blk_fs_request(rq))
1080 expiry = cdrom_timer_expiry;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001081 }
1082
1083 ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 return ide_started;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001085
1086end_request:
1087 if (blk_pc_request(rq)) {
1088 unsigned long flags;
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +01001089 unsigned int dlen = rq->data_len;
1090
1091 if (dma)
1092 rq->data_len = 0;
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001093
1094 spin_lock_irqsave(&ide_lock, flags);
Kiyoshi Ueda14e04c32008-02-19 01:41:26 +01001095 if (__blk_end_request(rq, 0, dlen))
Bartlomiej Zolnierkiewiczff1bfbc12008-02-01 23:09:25 +01001096 BUG();
1097 HWGROUP(drive)->rq = NULL;
1098 spin_unlock_irqrestore(&ide_lock, flags);
1099 } else {
1100 if (!uptodate)
1101 rq->cmd_flags |= REQ_FAILED;
1102 cdrom_end_request(drive, uptodate);
1103 }
1104 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105}
1106
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001107static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001108{
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001109 struct cdrom_info *cd = drive->driver_data;
1110 int write = rq_data_dir(rq) == WRITE;
1111 unsigned short sectors_per_frame =
1112 queue_hardsect_size(drive->queue) >> SECTOR_BITS;
1113
1114 if (write) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001115 /* disk has become write protected */
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001116 if (cd->disk->policy) {
1117 cdrom_end_request(drive, 0);
1118 return ide_stopped;
1119 }
1120 } else {
1121 /*
1122 * We may be retrying this request after an error. Fix up any
1123 * weirdness which might be present in the request packet.
1124 */
1125 restore_request(rq);
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001126 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001128 /* use DMA, if possible / writes *must* be hardware frame aligned */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
1130 (rq->sector & (sectors_per_frame - 1))) {
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001131 if (write) {
1132 cdrom_end_request(drive, 0);
1133 return ide_stopped;
1134 }
1135 cd->dma = 0;
1136 } else
1137 cd->dma = drive->using_dma;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138
Bartlomiej Zolnierkiewicz21ea1f02008-02-01 23:09:27 +01001139 if (write)
1140 cd->devinfo.media_written = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001142 return ide_started;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143}
1144
1145static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive)
1146{
1147 struct request *rq = HWGROUP(drive)->rq;
1148
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149 return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
1150}
1151
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001152static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153{
1154 struct cdrom_info *info = drive->driver_data;
1155
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001156 if (blk_pc_request(rq))
1157 rq->cmd_flags |= REQ_QUIET;
1158 else
1159 rq->cmd_flags &= ~REQ_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160
1161 info->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001163 /* sg request */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001164 if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
1165 struct request_queue *q = drive->queue;
1166 unsigned int alignment;
1167 unsigned long addr;
FUJITA Tomonori0b6abc12008-07-16 20:33:35 +02001168 unsigned long stack_mask = ~(THREAD_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001170 if (rq->bio)
1171 addr = (unsigned long)bio_data(rq->bio);
1172 else
1173 addr = (unsigned long)rq->data;
1174
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175 info->dma = drive->using_dma;
1176
1177 /*
1178 * check if dma is safe
Linus Torvalds5d9e4ea2005-05-27 07:36:17 -07001179 *
1180 * NOTE! The "len" and "addr" checks should possibly have
1181 * separate masks.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182 */
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001183 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
1184 if (addr & alignment || rq->data_len & alignment)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185 info->dma = 0;
FUJITA Tomonori0b6abc12008-07-16 20:33:35 +02001186
1187 if (!((addr & stack_mask) ^
1188 ((unsigned long)current->stack & stack_mask)))
1189 info->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191}
1192
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001193/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194 * cdrom driver request routine.
1195 */
Borislav Petkov99384ae2008-07-16 20:33:45 +02001196static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
Borislav Petkove5e076a2008-04-26 22:25:15 +02001197 sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199 struct cdrom_info *info = drive->driver_data;
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001200 ide_handler_t *fn;
1201 int xferlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202
1203 if (blk_fs_request(rq)) {
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001204 if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +02001205 ide_hwif_t *hwif = drive->hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001206 unsigned long elapsed = jiffies - info->start_seek;
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +02001207 int stat = hwif->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208
1209 if ((stat & SEEK_STAT) != SEEK_STAT) {
1210 if (elapsed < IDECD_SEEK_TIMEOUT) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001211 ide_stall_queue(drive,
1212 IDECD_SEEK_TIMER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213 return ide_stopped;
1214 }
Borislav Petkov83c85652008-04-26 22:25:15 +02001215 printk(KERN_ERR "%s: DSC timeout\n",
1216 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217 }
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001218 info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219 }
Borislav Petkov83c85652008-04-26 22:25:15 +02001220 if (rq_data_dir(rq) == READ &&
1221 IDE_LARGE_SEEK(info->last_block, block,
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001222 IDECD_SEEK_THRESHOLD) &&
1223 drive->dsc_overlap) {
1224 xferlen = 0;
1225 fn = cdrom_start_seek_continuation;
Borislav Petkove529c602008-07-16 20:33:46 +02001226
Borislav Petkov4b01fcb2008-07-16 20:33:46 +02001227 info->dma = 0;
1228 info->start_seek = jiffies;
Borislav Petkove529c602008-07-16 20:33:46 +02001229
1230 ide_cd_prepare_seek_request(drive, rq);
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001231 } else {
1232 xferlen = 32768;
1233 fn = cdrom_start_rw_cont;
Borislav Petkov90eb8082008-07-16 20:33:46 +02001234
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001235 if (cdrom_start_rw(drive, rq) == ide_stopped)
1236 return ide_stopped;
Borislav Petkov90eb8082008-07-16 20:33:46 +02001237
1238 if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
1239 return ide_stopped;
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001240 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001241 info->last_block = block;
Bartlomiej Zolnierkiewiczc9f56a82008-02-01 23:09:26 +01001242 } else if (blk_sense_request(rq) || blk_pc_request(rq) ||
Jens Axboecea28852006-10-12 15:08:45 +02001243 rq->cmd_type == REQ_TYPE_ATA_PC) {
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001244 xferlen = rq->data_len;
1245 fn = cdrom_do_newpc_cont;
Borislav Petkov7fcebda2008-07-16 20:33:46 +02001246
1247 if (!rq->timeout)
1248 rq->timeout = ATAPI_WAIT_PC;
1249
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001250 cdrom_do_block_pc(drive, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001251 } else if (blk_special_request(rq)) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001252 /* right now this can only be a reset... */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 cdrom_end_request(drive, 1);
1254 return ide_stopped;
Borislav Petkovab9d6e32008-07-16 20:33:45 +02001255 } else {
1256 blk_dump_rq_flags(rq, "ide-cd bad flags");
1257 cdrom_end_request(drive, 0);
1258 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259 }
Borislav Petkovb6ca4402008-07-16 20:33:46 +02001260
1261 return cdrom_start_packet_command(drive, xferlen, fn);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262}
1263
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001264/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265 * Ioctl handling.
1266 *
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001267 * Routines which queue packet commands take as a final argument a pointer to a
1268 * request_sense struct. If execution of the command results in an error with a
1269 * CHECK CONDITION status, this structure will be filled with the results of the
1270 * subsequent request sense command. The pointer can also be NULL, in which case
1271 * no sense information is returned.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 */
Borislav Petkove5e076a2008-04-26 22:25:15 +02001273static void msf_from_bcd(struct atapi_msf *msf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274{
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001275 msf->minute = BCD2BIN(msf->minute);
1276 msf->second = BCD2BIN(msf->second);
1277 msf->frame = BCD2BIN(msf->frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278}
1279
Borislav Petkovf9afd182008-02-01 23:09:29 +01001280int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282 struct cdrom_info *info = drive->driver_data;
1283 struct cdrom_device_info *cdi = &info->devinfo;
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001284 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001286 memset(cmd, 0, BLK_MAX_CDB);
1287 cmd[0] = GPCMD_TEST_UNIT_READY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001289 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001290 * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
1291 * instead of supporting the LOAD_UNLOAD opcode.
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001292 */
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001293 cmd[7] = cdi->sanyo_slot % 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001295 return ide_cd_queue_pc(drive, cmd, 0, NULL, 0, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296}
1297
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
1299 unsigned long *sectors_per_frame,
1300 struct request_sense *sense)
1301{
1302 struct {
1303 __u32 lba;
1304 __u32 blocklen;
1305 } capbuf;
1306
1307 int stat;
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001308 unsigned char cmd[BLK_MAX_CDB];
1309 unsigned len = sizeof(capbuf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001311 memset(cmd, 0, BLK_MAX_CDB);
1312 cmd[0] = GPCMD_READ_CDVD_CAPACITY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001314 stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
1315 REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 if (stat == 0) {
1317 *capacity = 1 + be32_to_cpu(capbuf.lba);
1318 *sectors_per_frame =
1319 be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
1320 }
1321
1322 return stat;
1323}
1324
1325static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
1326 int format, char *buf, int buflen,
1327 struct request_sense *sense)
1328{
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001329 unsigned char cmd[BLK_MAX_CDB];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001331 memset(cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001333 cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
1334 cmd[6] = trackno;
1335 cmd[7] = (buflen >> 8);
1336 cmd[8] = (buflen & 0xff);
1337 cmd[9] = (format << 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338
1339 if (msf_flag)
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001340 cmd[1] = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341
FUJITA Tomonori5f828542008-07-15 21:21:42 +02001342 return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001343}
1344
Linus Torvalds1da177e2005-04-16 15:20:36 -07001345/* Try to read the entire TOC for the disk into our internal buffer. */
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001346int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347{
1348 int stat, ntracks, i;
1349 struct cdrom_info *info = drive->driver_data;
1350 struct cdrom_device_info *cdi = &info->devinfo;
1351 struct atapi_toc *toc = info->toc;
1352 struct {
1353 struct atapi_toc_header hdr;
1354 struct atapi_toc_entry ent;
1355 } ms_tmp;
1356 long last_written;
1357 unsigned long sectors_per_frame = SECTORS_PER_FRAME;
1358
1359 if (toc == NULL) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001360 /* try to allocate space */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001361 toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 if (toc == NULL) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001363 printk(KERN_ERR "%s: No cdrom TOC buffer!\n",
1364 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365 return -ENOMEM;
1366 }
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001367 info->toc = toc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 }
1369
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001370 /*
1371 * Check to see if the existing data is still valid. If it is,
1372 * just return.
1373 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001374 (void) cdrom_check_status(drive, sense);
1375
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001376 if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377 return 0;
1378
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001379 /* try to get the total cdrom capacity and sector size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 stat = cdrom_read_capacity(drive, &toc->capacity, &sectors_per_frame,
1381 sense);
1382 if (stat)
1383 toc->capacity = 0x1fffff;
1384
1385 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001386 /* save a private copy of the TOC capacity for error handling */
Alan Coxdbe217a2006-06-25 05:47:44 -07001387 drive->probed_capacity = toc->capacity * sectors_per_frame;
1388
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389 blk_queue_hardsect_size(drive->queue,
1390 sectors_per_frame << SECTOR_BITS);
1391
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001392 /* first read just the header, so we know how long the TOC is */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393 stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
1394 sizeof(struct atapi_toc_header), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001395 if (stat)
1396 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001398 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001399 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1400 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402
1403 ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1404 if (ntracks <= 0)
1405 return -EIO;
1406 if (ntracks > MAX_TRACKS)
1407 ntracks = MAX_TRACKS;
1408
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001409 /* now read the whole schmeer */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410 stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
1411 (char *)&toc->hdr,
1412 sizeof(struct atapi_toc_header) +
1413 (ntracks + 1) *
1414 sizeof(struct atapi_toc_entry), sense);
1415
1416 if (stat && toc->hdr.first_track > 1) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001417 /*
1418 * Cds with CDI tracks only don't have any TOC entries, despite
1419 * of this the returned values are
1420 * first_track == last_track = number of CDI tracks + 1,
1421 * so that this case is indistinguishable from the same layout
1422 * plus an additional audio track. If we get an error for the
1423 * regular case, we assume a CDI without additional audio
1424 * tracks. In this case the readable TOC is empty (CDI tracks
1425 * are not included) and only holds the Leadout entry.
1426 *
1427 * Heiko Eißfeldt.
1428 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 ntracks = 0;
1430 stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
1431 (char *)&toc->hdr,
1432 sizeof(struct atapi_toc_header) +
1433 (ntracks + 1) *
1434 sizeof(struct atapi_toc_entry),
1435 sense);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001436 if (stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001437 return stat;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001438
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001439 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001440 toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
1441 toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001442 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 toc->hdr.first_track = CDROM_LEADOUT;
1444 toc->hdr.last_track = CDROM_LEADOUT;
1445 }
1446 }
1447
1448 if (stat)
1449 return stat;
1450
Borislav Petkov7eb43fd2008-02-11 00:32:13 +01001451 toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001453 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001454 toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
1455 toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001458 for (i = 0; i <= ntracks; i++) {
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001459 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
1460 if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
Bartlomiej Zolnierkiewicz9a6dc662008-02-01 23:09:22 +01001461 toc->ent[i].track = BCD2BIN(toc->ent[i].track);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 msf_from_bcd(&toc->ent[i].addr.msf);
1463 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001464 toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
1465 toc->ent[i].addr.msf.second,
1466 toc->ent[i].addr.msf.frame);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467 }
1468
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469 if (toc->hdr.first_track != CDROM_LEADOUT) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001470 /* read the multisession information */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471 stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
1472 sizeof(ms_tmp), sense);
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001473 if (stat)
1474 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475
1476 toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
1477 } else {
Borislav Petkove5e076a2008-04-26 22:25:15 +02001478 ms_tmp.hdr.last_track = CDROM_LEADOUT;
1479 ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480 toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
1481 }
1482
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001483 if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001484 /* re-read multisession information using MSF format */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
1486 sizeof(ms_tmp), sense);
1487 if (stat)
1488 return stat;
1489
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001490 msf_from_bcd(&ms_tmp.ent.addr.msf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001492 ms_tmp.ent.addr.msf.second,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493 ms_tmp.ent.addr.msf.frame);
1494 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495
1496 toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1497
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001498 /* now try to get the total cdrom capacity */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001499 stat = cdrom_get_last_written(cdi, &last_written);
1500 if (!stat && (last_written > toc->capacity)) {
1501 toc->capacity = last_written;
1502 set_capacity(info->disk, toc->capacity * sectors_per_frame);
Alan Coxdbe217a2006-06-25 05:47:44 -07001503 drive->probed_capacity = toc->capacity * sectors_per_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 }
1505
1506 /* Remember that we've read this stuff. */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001507 info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508
1509 return 0;
1510}
1511
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001512int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001513{
1514 struct cdrom_info *info = drive->driver_data;
1515 struct cdrom_device_info *cdi = &info->devinfo;
1516 struct packet_command cgc;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001517 int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001518
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001519 if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001520 size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
Eric Piel9235e682005-06-23 00:10:29 -07001521
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001522 init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001523 do {
1524 /* we seem to get stat=0x01,err=0x00 the first time (??) */
Eric Piel9235e682005-06-23 00:10:29 -07001525 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
1526 if (!stat)
1527 break;
1528 } while (--attempts);
1529 return stat;
1530}
1531
Bartlomiej Zolnierkiewicz17802992008-02-01 23:09:25 +01001532void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
Eric Piel9235e682005-06-23 00:10:29 -07001533{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001534 struct cdrom_info *cd = drive->driver_data;
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001535 u16 curspeed, maxspeed;
1536
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001537 curspeed = *(u16 *)&buf[8 + 14];
1538 maxspeed = *(u16 *)&buf[8 + 8];
1539
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001540 if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001541 curspeed = le16_to_cpu(curspeed);
1542 maxspeed = le16_to_cpu(maxspeed);
Eric Piel9235e682005-06-23 00:10:29 -07001543 } else {
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001544 curspeed = be16_to_cpu(curspeed);
1545 maxspeed = be16_to_cpu(maxspeed);
Eric Piel9235e682005-06-23 00:10:29 -07001546 }
Bartlomiej Zolnierkiewicz481c8c62008-02-01 23:09:20 +01001547
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001548 cd->current_speed = (curspeed + (176/2)) / 176;
1549 cd->max_speed = (maxspeed + (176/2)) / 176;
Eric Piel9235e682005-06-23 00:10:29 -07001550}
1551
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001552#define IDE_CD_CAPABILITIES \
1553 (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
1554 CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
1555 CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
1556 CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
1557 CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559static struct cdrom_device_ops ide_cdrom_dops = {
1560 .open = ide_cdrom_open_real,
1561 .release = ide_cdrom_release_real,
1562 .drive_status = ide_cdrom_drive_status,
1563 .media_changed = ide_cdrom_check_media_change_real,
1564 .tray_move = ide_cdrom_tray_move,
1565 .lock_door = ide_cdrom_lock_door,
1566 .select_speed = ide_cdrom_select_speed,
1567 .get_last_session = ide_cdrom_get_last_session,
1568 .get_mcn = ide_cdrom_get_mcn,
1569 .reset = ide_cdrom_reset,
1570 .audio_ioctl = ide_cdrom_audio_ioctl,
Bartlomiej Zolnierkiewicz20e7f7e2008-02-01 23:09:20 +01001571 .capability = IDE_CD_CAPABILITIES,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001572 .generic_packet = ide_cdrom_packet,
1573};
1574
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001575static int ide_cdrom_register(ide_drive_t *drive, int nslots)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576{
1577 struct cdrom_info *info = drive->driver_data;
1578 struct cdrom_device_info *devinfo = &info->devinfo;
1579
1580 devinfo->ops = &ide_cdrom_dops;
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001581 devinfo->speed = info->current_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582 devinfo->capacity = nslots;
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001583 devinfo->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001584 strcpy(devinfo->name, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001586 if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
Bartlomiej Zolnierkiewicz3cbd8142007-12-24 15:23:43 +01001587 devinfo->mask |= CDC_SELECT_SPEED;
1588
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589 devinfo->disk = info->disk;
1590 return register_cdrom(devinfo);
1591}
1592
Borislav Petkove5e076a2008-04-26 22:25:15 +02001593static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001594{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001595 struct cdrom_info *cd = drive->driver_data;
1596 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001597 u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
1598 mechtype_t mechtype;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001599 int nslots = 1;
1600
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001601 cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
1602 CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
1603 CDC_MO_DRIVE | CDC_RAM);
1604
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605 if (drive->media == ide_optical) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001606 cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
Borislav Petkov83c85652008-04-26 22:25:15 +02001607 printk(KERN_ERR "%s: ATAPI magneto-optical drive\n",
1608 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 return nslots;
1610 }
1611
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001612 if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001613 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001614 cdi->mask &= ~CDC_PLAY_AUDIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001615 return nslots;
1616 }
1617
1618 /*
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001619 * We have to cheat a little here. the packet will eventually be queued
1620 * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
1621 * Since this device hasn't been registered with the Uniform layer yet,
1622 * it can't do this. Same goes for cdi->ops.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001623 */
Jesper Juhl2a91f3e2005-10-30 15:02:45 -08001624 cdi->handle = drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625 cdi->ops = &ide_cdrom_dops;
1626
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001627 if (ide_cdrom_get_capabilities(drive, buf))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628 return 0;
1629
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001630 if ((buf[8 + 6] & 0x01) == 0)
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001631 cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001632 if (buf[8 + 6] & 0x08)
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001633 cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001634 if (buf[8 + 3] & 0x01)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001635 cdi->mask &= ~CDC_CD_R;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001636 if (buf[8 + 3] & 0x02)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001637 cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001638 if (buf[8 + 2] & 0x38)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001639 cdi->mask &= ~CDC_DVD;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001640 if (buf[8 + 3] & 0x20)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001641 cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001642 if (buf[8 + 3] & 0x10)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001643 cdi->mask &= ~CDC_DVD_R;
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001644 if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001645 cdi->mask &= ~CDC_PLAY_AUDIO;
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001646
1647 mechtype = buf[8 + 6] >> 5;
1648 if (mechtype == mechtype_caddy || mechtype == mechtype_popup)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001649 cdi->mask |= CDC_CLOSE_TRAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651 if (cdi->sanyo_slot > 0) {
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001652 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001653 nslots = 3;
Bartlomiej Zolnierkiewiczcdf60002008-02-01 23:09:22 +01001654 } else if (mechtype == mechtype_individual_changer ||
1655 mechtype == mechtype_cartridge_changer) {
Bartlomiej Zolnierkiewicz2609d062008-02-01 23:09:19 +01001656 nslots = cdrom_number_of_slots(cdi);
1657 if (nslots > 1)
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001658 cdi->mask &= ~CDC_SELECT_DISC;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001659 }
1660
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001661 ide_cdrom_update_speed(drive, buf);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001662
Linus Torvalds1da177e2005-04-16 15:20:36 -07001663 printk(KERN_INFO "%s: ATAPI", drive->name);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001664
1665 /* don't print speed if the drive reported 0 */
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001666 if (cd->max_speed)
1667 printk(KERN_CONT " %dX", cd->max_speed);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001668
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001669 printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001670
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001671 if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
1672 printk(KERN_CONT " DVD%s%s",
1673 (cdi->mask & CDC_DVD_R) ? "" : "-R",
1674 (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001676 if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
1677 printk(KERN_CONT " CD%s%s",
1678 (cdi->mask & CDC_CD_R) ? "" : "-R",
1679 (cdi->mask & CDC_CD_RW) ? "" : "/RW");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001680
Bartlomiej Zolnierkiewicz3f1b86d2008-02-01 23:09:20 +01001681 if ((cdi->mask & CDC_SELECT_DISC) == 0)
1682 printk(KERN_CONT " changer w/%d slots", nslots);
1683 else
1684 printk(KERN_CONT " drive");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685
Bartlomiej Zolnierkiewicz455d80a2008-02-01 23:09:21 +01001686 printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12]));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001687
1688 return nslots;
1689}
1690
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001691/* standard prep_rq_fn that builds 10 byte cmds */
Jens Axboe165125e2007-07-24 09:28:11 +02001692static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001693{
1694 int hard_sect = queue_hardsect_size(q);
1695 long block = (long)rq->hard_sector / (hard_sect >> 9);
1696 unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9);
1697
FUJITA Tomonorid34c87e2008-04-29 14:37:52 +02001698 memset(rq->cmd, 0, BLK_MAX_CDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699
1700 if (rq_data_dir(rq) == READ)
1701 rq->cmd[0] = GPCMD_READ_10;
1702 else
1703 rq->cmd[0] = GPCMD_WRITE_10;
1704
1705 /*
1706 * fill in lba
1707 */
1708 rq->cmd[2] = (block >> 24) & 0xff;
1709 rq->cmd[3] = (block >> 16) & 0xff;
1710 rq->cmd[4] = (block >> 8) & 0xff;
1711 rq->cmd[5] = block & 0xff;
1712
1713 /*
1714 * and transfer length
1715 */
1716 rq->cmd[7] = (blocks >> 8) & 0xff;
1717 rq->cmd[8] = blocks & 0xff;
1718 rq->cmd_len = 10;
1719 return BLKPREP_OK;
1720}
1721
1722/*
1723 * Most of the SCSI commands are supported directly by ATAPI devices.
1724 * This transform handles the few exceptions.
1725 */
1726static int ide_cdrom_prep_pc(struct request *rq)
1727{
1728 u8 *c = rq->cmd;
1729
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001730 /* transform 6-byte read/write commands to the 10-byte version */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731 if (c[0] == READ_6 || c[0] == WRITE_6) {
1732 c[8] = c[4];
1733 c[5] = c[3];
1734 c[4] = c[2];
1735 c[3] = c[1] & 0x1f;
1736 c[2] = 0;
1737 c[1] &= 0xe0;
1738 c[0] += (READ_10 - READ_6);
1739 rq->cmd_len = 10;
1740 return BLKPREP_OK;
1741 }
1742
1743 /*
1744 * it's silly to pretend we understand 6-byte sense commands, just
1745 * reject with ILLEGAL_REQUEST and the caller should take the
1746 * appropriate action
1747 */
1748 if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
1749 rq->errors = ILLEGAL_REQUEST;
1750 return BLKPREP_KILL;
1751 }
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001752
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753 return BLKPREP_OK;
1754}
1755
Jens Axboe165125e2007-07-24 09:28:11 +02001756static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757{
Jens Axboe4aff5e22006-08-10 08:44:47 +02001758 if (blk_fs_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759 return ide_cdrom_prep_fs(q, rq);
Jens Axboe4aff5e22006-08-10 08:44:47 +02001760 else if (blk_pc_request(rq))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001761 return ide_cdrom_prep_pc(rq);
1762
1763 return 0;
1764}
1765
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001766struct cd_list_entry {
1767 const char *id_model;
1768 const char *id_firmware;
1769 unsigned int cd_flags;
1770};
1771
Borislav Petkov5e657a92008-04-26 22:25:15 +02001772#ifdef CONFIG_IDE_PROC_FS
1773static sector_t ide_cdrom_capacity(ide_drive_t *drive)
1774{
1775 unsigned long capacity, sectors_per_frame;
1776
1777 if (cdrom_read_capacity(drive, &capacity, &sectors_per_frame, NULL))
1778 return 0;
1779
1780 return capacity * sectors_per_frame;
1781}
1782
Borislav Petkove5e076a2008-04-26 22:25:15 +02001783static int proc_idecd_read_capacity(char *page, char **start, off_t off,
1784 int count, int *eof, void *data)
Borislav Petkov5e657a92008-04-26 22:25:15 +02001785{
1786 ide_drive_t *drive = data;
1787 int len;
1788
1789 len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive));
1790 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
1791}
1792
1793static ide_proc_entry_t idecd_proc[] = {
1794 { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
1795 { NULL, 0, NULL, NULL }
1796};
1797
1798static void ide_cdrom_add_settings(ide_drive_t *drive)
1799{
1800 ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1,
1801 &drive->dsc_overlap, NULL);
1802}
1803#else
1804static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
1805#endif
1806
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001807static const struct cd_list_entry ide_cd_quirks_list[] = {
1808 /* Limit transfer size per interrupt. */
1809 { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
1810 { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
1811 /* SCR-3231 doesn't support the SET_CD_SPEED command. */
1812 { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT },
1813 /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
1814 { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
1815 IDE_CD_FLAG_PRE_ATAPI12, },
1816 /* Vertos 300, some versions of this drive like to talk BCD. */
1817 { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, },
1818 /* Vertos 600 ESD. */
1819 { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, },
1820 /*
1821 * Sanyo 3 CD changer uses a non-standard command for CD changing
1822 * (by default standard ATAPI support for CD changers is used).
1823 */
1824 { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD },
1825 { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD },
1826 { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD },
1827 /* Stingray 8X CD-ROM. */
1828 { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
1829 /*
1830 * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
1831 * mode sense page capabilities size, but older drives break.
1832 */
1833 { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
1834 { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
1835 /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
1836 { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS },
1837 /*
1838 * Some drives used by Apple don't advertise audio play
1839 * but they do support reading TOC & audio datas.
1840 */
1841 { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1842 { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1843 { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
1844 { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
Borislav Petkovacbe44e2008-02-26 21:50:32 +01001845 { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001846 { NULL, NULL, 0 }
1847};
1848
1849static unsigned int ide_cd_flags(struct hd_driveid *id)
1850{
1851 const struct cd_list_entry *cle = ide_cd_quirks_list;
1852
1853 while (cle->id_model) {
1854 if (strcmp(cle->id_model, id->model) == 0 &&
1855 (cle->id_firmware == NULL ||
1856 strstr(id->fw_rev, cle->id_firmware)))
1857 return cle->cd_flags;
1858 cle++;
1859 }
1860
1861 return 0;
1862}
1863
Borislav Petkove5e076a2008-04-26 22:25:15 +02001864static int ide_cdrom_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865{
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001866 struct cdrom_info *cd = drive->driver_data;
1867 struct cdrom_device_info *cdi = &cd->devinfo;
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001868 struct hd_driveid *id = drive->id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001869 int nslots;
1870
1871 blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn);
1872 blk_queue_dma_alignment(drive->queue, 31);
FUJITA Tomonorie5318b52008-07-16 20:33:35 +02001873 blk_queue_update_dma_pad(drive->queue, 15);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001874 drive->queue->unplug_delay = (1 * HZ) / 1000;
1875 if (!drive->queue->unplug_delay)
1876 drive->queue->unplug_delay = 1;
1877
1878 drive->special.all = 0;
1879
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001880 cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
1881 ide_cd_flags(id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001883 if ((id->config & 0x0060) == 0x20)
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001884 cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
Bartlomiej Zolnierkiewiczb8d25de2008-02-01 23:09:19 +01001885
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001886 if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
1887 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001888 cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
1889 IDE_CD_FLAG_TOCADDR_AS_BCD);
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001890 else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
1891 id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
Bartlomiej Zolnierkiewicz2bc4cf22008-02-01 23:09:22 +01001892 cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
Bartlomiej Zolnierkiewicze59724c2008-02-01 23:09:22 +01001893 else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001894 /* 3 => use CD in slot 0 */
1895 cdi->sanyo_slot = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001896
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001897 nslots = ide_cdrom_probe_capabilities(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001898
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02001899 /* set correct block size */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001900 blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
1901
Bartlomiej Zolnierkiewiczcc121752008-04-27 15:38:24 +02001902 drive->dsc_overlap = (drive->next != drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903
1904 if (ide_cdrom_register(drive, nslots)) {
Borislav Petkov83c85652008-04-26 22:25:15 +02001905 printk(KERN_ERR "%s: %s failed to register device with the"
1906 " cdrom driver.\n", drive->name, __func__);
Bartlomiej Zolnierkiewicz4fe67172008-02-01 23:09:21 +01001907 cd->devinfo.handle = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001908 return 1;
1909 }
1910 ide_cdrom_add_settings(drive);
1911 return 0;
1912}
1913
Russell King4031bbe2006-01-06 11:41:00 +00001914static void ide_cd_remove(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001915{
1916 struct cdrom_info *info = drive->driver_data;
1917
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001918 ide_proc_unregister_driver(drive, info->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919
1920 del_gendisk(info->disk);
1921
1922 ide_cd_put(info);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923}
1924
1925static void ide_cd_release(struct kref *kref)
1926{
1927 struct cdrom_info *info = to_ide_cd(kref);
1928 struct cdrom_device_info *devinfo = &info->devinfo;
1929 ide_drive_t *drive = info->drive;
1930 struct gendisk *g = info->disk;
1931
Jesper Juhl6044ec82005-11-07 01:01:32 -08001932 kfree(info->toc);
Akinobu Mita0a0c4112008-03-26 12:09:02 +01001933 if (devinfo->handle == drive)
1934 unregister_cdrom(devinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001935 drive->dsc_overlap = 0;
1936 drive->driver_data = NULL;
1937 blk_queue_prep_rq(drive->queue, NULL);
1938 g->private_data = NULL;
1939 put_disk(g);
1940 kfree(info);
1941}
1942
Russell King4031bbe2006-01-06 11:41:00 +00001943static int ide_cd_probe(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001944
Linus Torvalds1da177e2005-04-16 15:20:36 -07001945static ide_driver_t ide_cdrom_driver = {
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001946 .gen_driver = {
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001947 .owner = THIS_MODULE,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001948 .name = "ide-cdrom",
1949 .bus = &ide_bus_type,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001950 },
Russell King4031bbe2006-01-06 11:41:00 +00001951 .probe = ide_cd_probe,
1952 .remove = ide_cd_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953 .version = IDECD_VERSION,
1954 .media = ide_cdrom,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001955 .supports_dsc_overlap = 1,
Borislav Petkov99384ae2008-07-16 20:33:45 +02001956 .do_request = ide_cd_do_request,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957 .end_request = ide_end_request,
1958 .error = __ide_error,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001959#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960 .proc = idecd_proc,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001961#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962};
1963
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001964static int idecd_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965{
1966 struct gendisk *disk = inode->i_bdev->bd_disk;
1967 struct cdrom_info *info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001968 int rc = -ENOMEM;
1969
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001970 info = ide_cd_get(disk);
1971 if (!info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 return -ENXIO;
1973
Borislav Petkov968c4962008-04-26 17:36:37 +02001974 rc = cdrom_open(&info->devinfo, inode, file);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975
1976 if (rc < 0)
1977 ide_cd_put(info);
1978
1979 return rc;
1980}
1981
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001982static int idecd_release(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001983{
1984 struct gendisk *disk = inode->i_bdev->bd_disk;
1985 struct cdrom_info *info = ide_cd_g(disk);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001986
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02001987 cdrom_release(&info->devinfo, file);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988
1989 ide_cd_put(info);
1990
1991 return 0;
1992}
1993
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08001994static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
1995{
1996 struct packet_command cgc;
1997 char buffer[16];
1998 int stat;
1999 char spindown;
2000
2001 if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
2002 return -EFAULT;
2003
2004 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2005
2006 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2007 if (stat)
2008 return stat;
2009
2010 buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
2011 return cdrom_mode_select(cdi, &cgc);
2012}
2013
2014static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
2015{
2016 struct packet_command cgc;
2017 char buffer[16];
2018 int stat;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002019 char spindown;
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002020
2021 init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
2022
2023 stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
2024 if (stat)
2025 return stat;
2026
2027 spindown = buffer[11] & 0x0f;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002028 if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002029 return -EFAULT;
2030 return 0;
2031}
2032
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002033static int idecd_ioctl(struct inode *inode, struct file *file,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034 unsigned int cmd, unsigned long arg)
2035{
2036 struct block_device *bdev = inode->i_bdev;
2037 struct cdrom_info *info = ide_cd_g(bdev->bd_disk);
2038 int err;
2039
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002040 switch (cmd) {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002041 case CDROMSETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002042 return idecd_set_spindown(&info->devinfo, arg);
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002043 case CDROMGETSPINDOWN:
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002044 return idecd_get_spindown(&info->devinfo, arg);
2045 default:
2046 break;
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002047 }
Christoph Hellwig6a2900b2006-03-23 03:00:15 -08002048
2049 err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050 if (err == -EINVAL)
2051 err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg);
2052
2053 return err;
2054}
2055
2056static int idecd_media_changed(struct gendisk *disk)
2057{
2058 struct cdrom_info *info = ide_cd_g(disk);
2059 return cdrom_media_changed(&info->devinfo);
2060}
2061
2062static int idecd_revalidate_disk(struct gendisk *disk)
2063{
2064 struct cdrom_info *info = ide_cd_g(disk);
2065 struct request_sense sense;
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01002066
2067 ide_cd_read_toc(info->drive, &sense);
2068
Linus Torvalds1da177e2005-04-16 15:20:36 -07002069 return 0;
2070}
2071
2072static struct block_device_operations idecd_ops = {
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002073 .owner = THIS_MODULE,
2074 .open = idecd_open,
2075 .release = idecd_release,
2076 .ioctl = idecd_ioctl,
2077 .media_changed = idecd_media_changed,
2078 .revalidate_disk = idecd_revalidate_disk
Linus Torvalds1da177e2005-04-16 15:20:36 -07002079};
2080
Borislav Petkov5a3ea3b2008-04-26 22:25:15 +02002081/* module options */
Paolo Ciarrocchi9ce70fb2008-04-26 17:36:42 +02002082static char *ignore;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083
2084module_param(ignore, charp, 0400);
2085MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
2086
Russell King4031bbe2006-01-06 11:41:00 +00002087static int ide_cd_probe(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088{
2089 struct cdrom_info *info;
2090 struct gendisk *g;
2091 struct request_sense sense;
2092
2093 if (!strstr("ide-cdrom", drive->driver_req))
2094 goto failed;
2095 if (!drive->present)
2096 goto failed;
2097 if (drive->media != ide_cdrom && drive->media != ide_optical)
2098 goto failed;
2099 /* skip drives that we were told to ignore */
2100 if (ignore != NULL) {
2101 if (strstr(ignore, drive->name)) {
Borislav Petkov83c85652008-04-26 22:25:15 +02002102 printk(KERN_INFO "ide-cd: ignoring drive %s\n",
2103 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 goto failed;
2105 }
2106 }
Deepak Saxenaf5e3c2f2005-11-07 01:01:25 -08002107 info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002108 if (info == NULL) {
Borislav Petkov83c85652008-04-26 22:25:15 +02002109 printk(KERN_ERR "%s: Can't allocate a cdrom structure\n",
2110 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111 goto failed;
2112 }
2113
2114 g = alloc_disk(1 << PARTN_BITS);
2115 if (!g)
2116 goto out_free_cd;
2117
2118 ide_init_disk(g, drive);
2119
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02002120 ide_proc_register_driver(drive, &ide_cdrom_driver);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002121
Linus Torvalds1da177e2005-04-16 15:20:36 -07002122 kref_init(&info->kref);
2123
2124 info->drive = drive;
2125 info->driver = &ide_cdrom_driver;
2126 info->disk = g;
2127
2128 g->private_data = &info->driver;
2129
2130 drive->driver_data = info;
2131
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132 g->minors = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133 g->driverfs_dev = &drive->gendev;
2134 g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
2135 if (ide_cdrom_setup(drive)) {
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02002136 ide_proc_unregister_driver(drive, &ide_cdrom_driver);
Bartlomiej Zolnierkiewicz05017db2007-12-24 15:23:43 +01002137 ide_cd_release(&info->kref);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138 goto failed;
2139 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140
Bartlomiej Zolnierkiewicz139c8292008-02-01 23:09:24 +01002141 ide_cd_read_toc(drive, &sense);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142 g->fops = &idecd_ops;
2143 g->flags |= GENHD_FL_REMOVABLE;
2144 add_disk(g);
2145 return 0;
2146
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147out_free_cd:
2148 kfree(info);
2149failed:
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002150 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151}
2152
2153static void __exit ide_cdrom_exit(void)
2154{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002155 driver_unregister(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156}
Bartlomiej Zolnierkiewicz17514e82005-11-19 22:24:35 +01002157
2158static int __init ide_cdrom_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02002160 return driver_register(&ide_cdrom_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161}
2162
Kay Sievers263756e2005-12-12 18:03:44 +01002163MODULE_ALIAS("ide:*m-cdrom*");
Bartlomiej Zolnierkiewicz972560f2008-02-01 23:09:23 +01002164MODULE_ALIAS("ide-cd");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165module_init(ide_cdrom_init);
2166module_exit(ide_cdrom_exit);
2167MODULE_LICENSE("GPL");