Loading...
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/kernel.h>
3#include <linux/mm.h>
4#include <linux/fs.h>
5#include <linux/errno.h>
6#include <linux/string.h>
7#include <linux/blkdev.h>
8#include <linux/module.h>
9#include <linux/blkpg.h>
10#include <linux/cdrom.h>
11#include <linux/delay.h>
12#include <linux/slab.h>
13#include <asm/io.h>
14#include <linux/uaccess.h>
15
16#include <scsi/scsi.h>
17#include <scsi/scsi_dbg.h>
18#include <scsi/scsi_device.h>
19#include <scsi/scsi_eh.h>
20#include <scsi/scsi_host.h>
21#include <scsi/scsi_ioctl.h>
22#include <scsi/scsi_cmnd.h>
23
24#include "sr.h"
25
26#if 0
27#define DEBUG
28#endif
29
30/* The sr_is_xa() seems to trigger firmware bugs with some drives :-(
31 * It is off by default and can be turned on with this module parameter */
32static int xa_test = 0;
33
34module_param(xa_test, int, S_IRUGO | S_IWUSR);
35
36static int sr_read_tochdr(struct cdrom_device_info *cdi,
37 struct cdrom_tochdr *tochdr)
38{
39 struct scsi_cd *cd = cdi->handle;
40 struct packet_command cgc;
41 int result;
42 unsigned char *buffer;
43
44 buffer = kzalloc(32, GFP_KERNEL);
45 if (!buffer)
46 return -ENOMEM;
47
48 memset(&cgc, 0, sizeof(struct packet_command));
49 cgc.timeout = IOCTL_TIMEOUT;
50 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
51 cgc.cmd[8] = 12; /* LSB of length */
52 cgc.buffer = buffer;
53 cgc.buflen = 12;
54 cgc.quiet = 1;
55 cgc.data_direction = DMA_FROM_DEVICE;
56
57 result = sr_do_ioctl(cd, &cgc);
58 if (result)
59 goto err;
60
61 tochdr->cdth_trk0 = buffer[2];
62 tochdr->cdth_trk1 = buffer[3];
63
64err:
65 kfree(buffer);
66 return result;
67}
68
69static int sr_read_tocentry(struct cdrom_device_info *cdi,
70 struct cdrom_tocentry *tocentry)
71{
72 struct scsi_cd *cd = cdi->handle;
73 struct packet_command cgc;
74 int result;
75 unsigned char *buffer;
76
77 buffer = kzalloc(32, GFP_KERNEL);
78 if (!buffer)
79 return -ENOMEM;
80
81 memset(&cgc, 0, sizeof(struct packet_command));
82 cgc.timeout = IOCTL_TIMEOUT;
83 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
84 cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0;
85 cgc.cmd[6] = tocentry->cdte_track;
86 cgc.cmd[8] = 12; /* LSB of length */
87 cgc.buffer = buffer;
88 cgc.buflen = 12;
89 cgc.data_direction = DMA_FROM_DEVICE;
90
91 result = sr_do_ioctl(cd, &cgc);
92 if (result)
93 goto err;
94
95 tocentry->cdte_ctrl = buffer[5] & 0xf;
96 tocentry->cdte_adr = buffer[5] >> 4;
97 tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
98 if (tocentry->cdte_format == CDROM_MSF) {
99 tocentry->cdte_addr.msf.minute = buffer[9];
100 tocentry->cdte_addr.msf.second = buffer[10];
101 tocentry->cdte_addr.msf.frame = buffer[11];
102 } else
103 tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8)
104 + buffer[10]) << 8) + buffer[11];
105
106err:
107 kfree(buffer);
108 return result;
109}
110
111#define IOCTL_RETRIES 3
112
113/* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives
114 are emulating a SCSI device via the idescsi module, they need to have
115 CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */
116
117static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti)
118{
119 struct cdrom_tocentry trk0_te, trk1_te;
120 struct cdrom_tochdr tochdr;
121 struct packet_command cgc;
122 int ntracks, ret;
123
124 ret = sr_read_tochdr(cdi, &tochdr);
125 if (ret)
126 return ret;
127
128 ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1;
129
130 if (ti->cdti_trk1 == ntracks)
131 ti->cdti_trk1 = CDROM_LEADOUT;
132 else if (ti->cdti_trk1 != CDROM_LEADOUT)
133 ti->cdti_trk1 ++;
134
135 trk0_te.cdte_track = ti->cdti_trk0;
136 trk0_te.cdte_format = CDROM_MSF;
137 trk1_te.cdte_track = ti->cdti_trk1;
138 trk1_te.cdte_format = CDROM_MSF;
139
140 ret = sr_read_tocentry(cdi, &trk0_te);
141 if (ret)
142 return ret;
143 ret = sr_read_tocentry(cdi, &trk1_te);
144 if (ret)
145 return ret;
146
147 memset(&cgc, 0, sizeof(struct packet_command));
148 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
149 cgc.cmd[3] = trk0_te.cdte_addr.msf.minute;
150 cgc.cmd[4] = trk0_te.cdte_addr.msf.second;
151 cgc.cmd[5] = trk0_te.cdte_addr.msf.frame;
152 cgc.cmd[6] = trk1_te.cdte_addr.msf.minute;
153 cgc.cmd[7] = trk1_te.cdte_addr.msf.second;
154 cgc.cmd[8] = trk1_te.cdte_addr.msf.frame;
155 cgc.data_direction = DMA_NONE;
156 cgc.timeout = IOCTL_TIMEOUT;
157 return sr_do_ioctl(cdi->handle, &cgc);
158}
159
160static int sr_play_trkind(struct cdrom_device_info *cdi,
161 struct cdrom_ti *ti)
162
163{
164 struct scsi_cd *cd = cdi->handle;
165 struct packet_command cgc;
166 int result;
167
168 memset(&cgc, 0, sizeof(struct packet_command));
169 cgc.timeout = IOCTL_TIMEOUT;
170 cgc.cmd[0] = GPCMD_PLAYAUDIO_TI;
171 cgc.cmd[4] = ti->cdti_trk0;
172 cgc.cmd[5] = ti->cdti_ind0;
173 cgc.cmd[7] = ti->cdti_trk1;
174 cgc.cmd[8] = ti->cdti_ind1;
175 cgc.data_direction = DMA_NONE;
176
177 result = sr_do_ioctl(cd, &cgc);
178 if (result == -EDRIVE_CANT_DO_THIS)
179 result = sr_fake_playtrkind(cdi, ti);
180
181 return result;
182}
183
184/* We do our own retries because we want to know what the specific
185 error code is. Normally the UNIT_ATTENTION code will automatically
186 clear after one error */
187
188int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
189{
190 struct scsi_device *SDev;
191 struct scsi_sense_hdr local_sshdr, *sshdr;
192 int result, err = 0, retries = 0;
193 const struct scsi_exec_args exec_args = {
194 .sshdr = cgc->sshdr ? : &local_sshdr,
195 };
196
197 SDev = cd->device;
198
199 sshdr = exec_args.sshdr;
200
201 retry:
202 if (!scsi_block_when_processing_errors(SDev)) {
203 err = -ENODEV;
204 goto out;
205 }
206
207 result = scsi_execute_cmd(SDev, cgc->cmd,
208 cgc->data_direction == DMA_TO_DEVICE ?
209 REQ_OP_DRV_OUT : REQ_OP_DRV_IN, cgc->buffer,
210 cgc->buflen, cgc->timeout, IOCTL_RETRIES,
211 &exec_args);
212 /* Minimal error checking. Ignore cases we know about, and report the rest. */
213 if (result < 0) {
214 err = result;
215 goto out;
216 }
217 if (scsi_status_is_check_condition(result)) {
218 switch (sshdr->sense_key) {
219 case UNIT_ATTENTION:
220 SDev->changed = 1;
221 if (!cgc->quiet)
222 sr_printk(KERN_INFO, cd,
223 "disc change detected.\n");
224 if (retries++ < 10)
225 goto retry;
226 err = -ENOMEDIUM;
227 break;
228 case NOT_READY: /* This happens if there is no disc in drive */
229 if (sshdr->asc == 0x04 &&
230 sshdr->ascq == 0x01) {
231 /* sense: Logical unit is in process of becoming ready */
232 if (!cgc->quiet)
233 sr_printk(KERN_INFO, cd,
234 "CDROM not ready yet.\n");
235 if (retries++ < 10) {
236 /* sleep 2 sec and try again */
237 ssleep(2);
238 goto retry;
239 } else {
240 /* 20 secs are enough? */
241 err = -ENOMEDIUM;
242 break;
243 }
244 }
245 if (!cgc->quiet)
246 sr_printk(KERN_INFO, cd,
247 "CDROM not ready. Make sure there "
248 "is a disc in the drive.\n");
249 err = -ENOMEDIUM;
250 break;
251 case ILLEGAL_REQUEST:
252 err = -EIO;
253 if (sshdr->asc == 0x20 &&
254 sshdr->ascq == 0x00)
255 /* sense: Invalid command operation code */
256 err = -EDRIVE_CANT_DO_THIS;
257 break;
258 default:
259 err = -EIO;
260 }
261 }
262
263 /* Wake up a process waiting for device */
264 out:
265 cgc->stat = err;
266 return err;
267}
268
269/* ---------------------------------------------------------------------- */
270/* interface to cdrom.c */
271
272int sr_tray_move(struct cdrom_device_info *cdi, int pos)
273{
274 Scsi_CD *cd = cdi->handle;
275 struct packet_command cgc;
276
277 memset(&cgc, 0, sizeof(struct packet_command));
278 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
279 cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
280 cgc.data_direction = DMA_NONE;
281 cgc.timeout = IOCTL_TIMEOUT;
282 return sr_do_ioctl(cd, &cgc);
283}
284
285int sr_lock_door(struct cdrom_device_info *cdi, int lock)
286{
287 Scsi_CD *cd = cdi->handle;
288
289 return scsi_set_medium_removal(cd->device, lock ?
290 SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
291}
292
293int sr_drive_status(struct cdrom_device_info *cdi, int slot)
294{
295 struct scsi_cd *cd = cdi->handle;
296 struct scsi_sense_hdr sshdr;
297 struct media_event_desc med;
298
299 if (CDSL_CURRENT != slot) {
300 /* we have no changer support */
301 return -EINVAL;
302 }
303 if (!scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
304 return CDS_DISC_OK;
305
306 /* SK/ASC/ASCQ of 2/4/1 means "unit is becoming ready" */
307 if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
308 && sshdr.asc == 0x04 && sshdr.ascq == 0x01)
309 return CDS_DRIVE_NOT_READY;
310
311 if (!cdrom_get_media_event(cdi, &med)) {
312 if (med.media_present)
313 return CDS_DISC_OK;
314 else if (med.door_open)
315 return CDS_TRAY_OPEN;
316 else
317 return CDS_NO_DISC;
318 }
319
320 /*
321 * SK/ASC/ASCQ of 2/4/2 means "initialization required"
322 * Using CD_TRAY_OPEN results in an START_STOP_UNIT to close
323 * the tray, which resolves the initialization requirement.
324 */
325 if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
326 && sshdr.asc == 0x04 && sshdr.ascq == 0x02)
327 return CDS_TRAY_OPEN;
328
329 /*
330 * 0x04 is format in progress .. but there must be a disc present!
331 */
332 if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04)
333 return CDS_DISC_OK;
334
335 /*
336 * If not using Mt Fuji extended media tray reports,
337 * just return TRAY_OPEN since ATAPI doesn't provide
338 * any other way to detect this...
339 */
340 if (scsi_sense_valid(&sshdr) &&
341 /* 0x3a is medium not present */
342 sshdr.asc == 0x3a)
343 return CDS_NO_DISC;
344 else
345 return CDS_TRAY_OPEN;
346
347 return CDS_DRIVE_NOT_READY;
348}
349
350int sr_disk_status(struct cdrom_device_info *cdi)
351{
352 Scsi_CD *cd = cdi->handle;
353 struct cdrom_tochdr toc_h;
354 struct cdrom_tocentry toc_e;
355 int i, rc, have_datatracks = 0;
356
357 /* look for data tracks */
358 rc = sr_read_tochdr(cdi, &toc_h);
359 if (rc)
360 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
361
362 for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) {
363 toc_e.cdte_track = i;
364 toc_e.cdte_format = CDROM_LBA;
365 if (sr_read_tocentry(cdi, &toc_e))
366 return CDS_NO_INFO;
367 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
368 have_datatracks = 1;
369 break;
370 }
371 }
372 if (!have_datatracks)
373 return CDS_AUDIO;
374
375 if (cd->xa_flag)
376 return CDS_XA_2_1;
377 else
378 return CDS_DATA_1;
379}
380
381int sr_get_last_session(struct cdrom_device_info *cdi,
382 struct cdrom_multisession *ms_info)
383{
384 Scsi_CD *cd = cdi->handle;
385
386 ms_info->addr.lba = cd->ms_offset;
387 ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
388
389 return 0;
390}
391
392int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
393{
394 Scsi_CD *cd = cdi->handle;
395 struct packet_command cgc;
396 char *buffer = kzalloc(32, GFP_KERNEL);
397 int result;
398
399 if (!buffer)
400 return -ENOMEM;
401
402 memset(&cgc, 0, sizeof(struct packet_command));
403 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
404 cgc.cmd[2] = 0x40; /* I do want the subchannel info */
405 cgc.cmd[3] = 0x02; /* Give me medium catalog number info */
406 cgc.cmd[8] = 24;
407 cgc.buffer = buffer;
408 cgc.buflen = 24;
409 cgc.data_direction = DMA_FROM_DEVICE;
410 cgc.timeout = IOCTL_TIMEOUT;
411 result = sr_do_ioctl(cd, &cgc);
412 if (result)
413 goto err;
414
415 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
416 mcn->medium_catalog_number[13] = 0;
417
418err:
419 kfree(buffer);
420 return result;
421}
422
423int sr_reset(struct cdrom_device_info *cdi)
424{
425 return 0;
426}
427
428int sr_select_speed(struct cdrom_device_info *cdi, int speed)
429{
430 Scsi_CD *cd = cdi->handle;
431 struct packet_command cgc;
432
433 if (speed == 0)
434 speed = 0xffff; /* set to max */
435 else
436 speed *= 177; /* Nx to kbyte/s */
437
438 memset(&cgc, 0, sizeof(struct packet_command));
439 cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
440 cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
441 cgc.cmd[3] = speed & 0xff; /* LSB */
442 cgc.data_direction = DMA_NONE;
443 cgc.timeout = IOCTL_TIMEOUT;
444
445 if (sr_do_ioctl(cd, &cgc))
446 return -EIO;
447 return 0;
448}
449
450/* ----------------------------------------------------------------------- */
451/* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
452/* because the generic cdrom driver does the user access stuff for us. */
453/* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
454/* sr_disk_status interface for the generic cdrom driver. */
455
456int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
457{
458 switch (cmd) {
459 case CDROMREADTOCHDR:
460 return sr_read_tochdr(cdi, arg);
461 case CDROMREADTOCENTRY:
462 return sr_read_tocentry(cdi, arg);
463 case CDROMPLAYTRKIND:
464 return sr_play_trkind(cdi, arg);
465 default:
466 return -EINVAL;
467 }
468}
469
470/* -----------------------------------------------------------------------
471 * a function to read all sorts of funny cdrom sectors using the READ_CD
472 * scsi-3 mmc command
473 *
474 * lba: linear block address
475 * format: 0 = data (anything)
476 * 1 = audio
477 * 2 = data (mode 1)
478 * 3 = data (mode 2)
479 * 4 = data (mode 2 form1)
480 * 5 = data (mode 2 form2)
481 * blksize: 2048 | 2336 | 2340 | 2352
482 */
483
484static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
485{
486 struct packet_command cgc;
487
488#ifdef DEBUG
489 sr_printk(KERN_INFO, cd, "sr_read_cd lba=%d format=%d blksize=%d\n",
490 lba, format, blksize);
491#endif
492
493 memset(&cgc, 0, sizeof(struct packet_command));
494 cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */
495 cgc.cmd[1] = ((format & 7) << 2);
496 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
497 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
498 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
499 cgc.cmd[5] = (unsigned char) lba & 0xff;
500 cgc.cmd[8] = 1;
501 switch (blksize) {
502 case 2336:
503 cgc.cmd[9] = 0x58;
504 break;
505 case 2340:
506 cgc.cmd[9] = 0x78;
507 break;
508 case 2352:
509 cgc.cmd[9] = 0xf8;
510 break;
511 default:
512 cgc.cmd[9] = 0x10;
513 break;
514 }
515 cgc.buffer = dest;
516 cgc.buflen = blksize;
517 cgc.data_direction = DMA_FROM_DEVICE;
518 cgc.timeout = IOCTL_TIMEOUT;
519 return sr_do_ioctl(cd, &cgc);
520}
521
522/*
523 * read sectors with blocksizes other than 2048
524 */
525
526static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
527{
528 struct packet_command cgc;
529 int rc;
530
531 /* we try the READ CD command first... */
532 if (cd->readcd_known) {
533 rc = sr_read_cd(cd, dest, lba, 0, blksize);
534 if (-EDRIVE_CANT_DO_THIS != rc)
535 return rc;
536 cd->readcd_known = 0;
537 sr_printk(KERN_INFO, cd,
538 "CDROM doesn't support READ CD (0xbe) command\n");
539 /* fall & retry the other way */
540 }
541 /* ... if this fails, we switch the blocksize using MODE SELECT */
542 if (blksize != cd->device->sector_size) {
543 if (0 != (rc = sr_set_blocklength(cd, blksize)))
544 return rc;
545 }
546#ifdef DEBUG
547 sr_printk(KERN_INFO, cd, "sr_read_sector lba=%d blksize=%d\n",
548 lba, blksize);
549#endif
550
551 memset(&cgc, 0, sizeof(struct packet_command));
552 cgc.cmd[0] = GPCMD_READ_10;
553 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
554 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
555 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
556 cgc.cmd[5] = (unsigned char) lba & 0xff;
557 cgc.cmd[8] = 1;
558 cgc.buffer = dest;
559 cgc.buflen = blksize;
560 cgc.data_direction = DMA_FROM_DEVICE;
561 cgc.timeout = IOCTL_TIMEOUT;
562 rc = sr_do_ioctl(cd, &cgc);
563
564 if (blksize != CD_FRAMESIZE)
565 rc |= sr_set_blocklength(cd, CD_FRAMESIZE);
566 return rc;
567}
568
569/*
570 * read a sector in raw mode to check the sector format
571 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
572 */
573
574int sr_is_xa(Scsi_CD *cd)
575{
576 unsigned char *raw_sector;
577 int is_xa;
578
579 if (!xa_test)
580 return 0;
581
582 raw_sector = kmalloc(2048, GFP_KERNEL);
583 if (!raw_sector)
584 return -ENOMEM;
585 if (0 == sr_read_sector(cd, cd->ms_offset + 16,
586 CD_FRAMESIZE_RAW1, raw_sector)) {
587 is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
588 } else {
589 /* read a raw sector failed for some reason. */
590 is_xa = -1;
591 }
592 kfree(raw_sector);
593#ifdef DEBUG
594 sr_printk(KERN_INFO, cd, "sr_is_xa: %d\n", is_xa);
595#endif
596 return is_xa;
597}
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/kernel.h>
3#include <linux/mm.h>
4#include <linux/fs.h>
5#include <linux/errno.h>
6#include <linux/string.h>
7#include <linux/blkdev.h>
8#include <linux/module.h>
9#include <linux/blkpg.h>
10#include <linux/cdrom.h>
11#include <linux/delay.h>
12#include <linux/slab.h>
13#include <asm/io.h>
14#include <linux/uaccess.h>
15
16#include <scsi/scsi.h>
17#include <scsi/scsi_dbg.h>
18#include <scsi/scsi_device.h>
19#include <scsi/scsi_eh.h>
20#include <scsi/scsi_host.h>
21#include <scsi/scsi_ioctl.h>
22#include <scsi/scsi_cmnd.h>
23
24#include "sr.h"
25
26#if 0
27#define DEBUG
28#endif
29
30/* The sr_is_xa() seems to trigger firmware bugs with some drives :-(
31 * It is off by default and can be turned on with this module parameter */
32static int xa_test = 0;
33
34module_param(xa_test, int, S_IRUGO | S_IWUSR);
35
36/* primitive to determine whether we need to have GFP_DMA set based on
37 * the status of the unchecked_isa_dma flag in the host structure */
38#define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0)
39
40static int sr_read_tochdr(struct cdrom_device_info *cdi,
41 struct cdrom_tochdr *tochdr)
42{
43 struct scsi_cd *cd = cdi->handle;
44 struct packet_command cgc;
45 int result;
46 unsigned char *buffer;
47
48 buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
49 if (!buffer)
50 return -ENOMEM;
51
52 memset(&cgc, 0, sizeof(struct packet_command));
53 cgc.timeout = IOCTL_TIMEOUT;
54 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
55 cgc.cmd[8] = 12; /* LSB of length */
56 cgc.buffer = buffer;
57 cgc.buflen = 12;
58 cgc.quiet = 1;
59 cgc.data_direction = DMA_FROM_DEVICE;
60
61 result = sr_do_ioctl(cd, &cgc);
62
63 tochdr->cdth_trk0 = buffer[2];
64 tochdr->cdth_trk1 = buffer[3];
65
66 kfree(buffer);
67 return result;
68}
69
70static int sr_read_tocentry(struct cdrom_device_info *cdi,
71 struct cdrom_tocentry *tocentry)
72{
73 struct scsi_cd *cd = cdi->handle;
74 struct packet_command cgc;
75 int result;
76 unsigned char *buffer;
77
78 buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
79 if (!buffer)
80 return -ENOMEM;
81
82 memset(&cgc, 0, sizeof(struct packet_command));
83 cgc.timeout = IOCTL_TIMEOUT;
84 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
85 cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0;
86 cgc.cmd[6] = tocentry->cdte_track;
87 cgc.cmd[8] = 12; /* LSB of length */
88 cgc.buffer = buffer;
89 cgc.buflen = 12;
90 cgc.data_direction = DMA_FROM_DEVICE;
91
92 result = sr_do_ioctl(cd, &cgc);
93
94 tocentry->cdte_ctrl = buffer[5] & 0xf;
95 tocentry->cdte_adr = buffer[5] >> 4;
96 tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
97 if (tocentry->cdte_format == CDROM_MSF) {
98 tocentry->cdte_addr.msf.minute = buffer[9];
99 tocentry->cdte_addr.msf.second = buffer[10];
100 tocentry->cdte_addr.msf.frame = buffer[11];
101 } else
102 tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8)
103 + buffer[10]) << 8) + buffer[11];
104
105 kfree(buffer);
106 return result;
107}
108
109#define IOCTL_RETRIES 3
110
111/* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives
112 are emulating a SCSI device via the idescsi module, they need to have
113 CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */
114
115static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti)
116{
117 struct cdrom_tocentry trk0_te, trk1_te;
118 struct cdrom_tochdr tochdr;
119 struct packet_command cgc;
120 int ntracks, ret;
121
122 ret = sr_read_tochdr(cdi, &tochdr);
123 if (ret)
124 return ret;
125
126 ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1;
127
128 if (ti->cdti_trk1 == ntracks)
129 ti->cdti_trk1 = CDROM_LEADOUT;
130 else if (ti->cdti_trk1 != CDROM_LEADOUT)
131 ti->cdti_trk1 ++;
132
133 trk0_te.cdte_track = ti->cdti_trk0;
134 trk0_te.cdte_format = CDROM_MSF;
135 trk1_te.cdte_track = ti->cdti_trk1;
136 trk1_te.cdte_format = CDROM_MSF;
137
138 ret = sr_read_tocentry(cdi, &trk0_te);
139 if (ret)
140 return ret;
141 ret = sr_read_tocentry(cdi, &trk1_te);
142 if (ret)
143 return ret;
144
145 memset(&cgc, 0, sizeof(struct packet_command));
146 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
147 cgc.cmd[3] = trk0_te.cdte_addr.msf.minute;
148 cgc.cmd[4] = trk0_te.cdte_addr.msf.second;
149 cgc.cmd[5] = trk0_te.cdte_addr.msf.frame;
150 cgc.cmd[6] = trk1_te.cdte_addr.msf.minute;
151 cgc.cmd[7] = trk1_te.cdte_addr.msf.second;
152 cgc.cmd[8] = trk1_te.cdte_addr.msf.frame;
153 cgc.data_direction = DMA_NONE;
154 cgc.timeout = IOCTL_TIMEOUT;
155 return sr_do_ioctl(cdi->handle, &cgc);
156}
157
158static int sr_play_trkind(struct cdrom_device_info *cdi,
159 struct cdrom_ti *ti)
160
161{
162 struct scsi_cd *cd = cdi->handle;
163 struct packet_command cgc;
164 int result;
165
166 memset(&cgc, 0, sizeof(struct packet_command));
167 cgc.timeout = IOCTL_TIMEOUT;
168 cgc.cmd[0] = GPCMD_PLAYAUDIO_TI;
169 cgc.cmd[4] = ti->cdti_trk0;
170 cgc.cmd[5] = ti->cdti_ind0;
171 cgc.cmd[7] = ti->cdti_trk1;
172 cgc.cmd[8] = ti->cdti_ind1;
173 cgc.data_direction = DMA_NONE;
174
175 result = sr_do_ioctl(cd, &cgc);
176 if (result == -EDRIVE_CANT_DO_THIS)
177 result = sr_fake_playtrkind(cdi, ti);
178
179 return result;
180}
181
182/* We do our own retries because we want to know what the specific
183 error code is. Normally the UNIT_ATTENTION code will automatically
184 clear after one error */
185
186int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
187{
188 struct scsi_device *SDev;
189 struct scsi_sense_hdr local_sshdr, *sshdr = &local_sshdr;
190 int result, err = 0, retries = 0;
191
192 SDev = cd->device;
193
194 if (cgc->sshdr)
195 sshdr = cgc->sshdr;
196
197 retry:
198 if (!scsi_block_when_processing_errors(SDev)) {
199 err = -ENODEV;
200 goto out;
201 }
202
203 result = scsi_execute(SDev, cgc->cmd, cgc->data_direction,
204 cgc->buffer, cgc->buflen, NULL, sshdr,
205 cgc->timeout, IOCTL_RETRIES, 0, 0, NULL);
206
207 /* Minimal error checking. Ignore cases we know about, and report the rest. */
208 if (driver_byte(result) != 0) {
209 switch (sshdr->sense_key) {
210 case UNIT_ATTENTION:
211 SDev->changed = 1;
212 if (!cgc->quiet)
213 sr_printk(KERN_INFO, cd,
214 "disc change detected.\n");
215 if (retries++ < 10)
216 goto retry;
217 err = -ENOMEDIUM;
218 break;
219 case NOT_READY: /* This happens if there is no disc in drive */
220 if (sshdr->asc == 0x04 &&
221 sshdr->ascq == 0x01) {
222 /* sense: Logical unit is in process of becoming ready */
223 if (!cgc->quiet)
224 sr_printk(KERN_INFO, cd,
225 "CDROM not ready yet.\n");
226 if (retries++ < 10) {
227 /* sleep 2 sec and try again */
228 ssleep(2);
229 goto retry;
230 } else {
231 /* 20 secs are enough? */
232 err = -ENOMEDIUM;
233 break;
234 }
235 }
236 if (!cgc->quiet)
237 sr_printk(KERN_INFO, cd,
238 "CDROM not ready. Make sure there "
239 "is a disc in the drive.\n");
240 err = -ENOMEDIUM;
241 break;
242 case ILLEGAL_REQUEST:
243 err = -EIO;
244 if (sshdr->asc == 0x20 &&
245 sshdr->ascq == 0x00)
246 /* sense: Invalid command operation code */
247 err = -EDRIVE_CANT_DO_THIS;
248 break;
249 default:
250 err = -EIO;
251 }
252 }
253
254 /* Wake up a process waiting for device */
255 out:
256 cgc->stat = err;
257 return err;
258}
259
260/* ---------------------------------------------------------------------- */
261/* interface to cdrom.c */
262
263int sr_tray_move(struct cdrom_device_info *cdi, int pos)
264{
265 Scsi_CD *cd = cdi->handle;
266 struct packet_command cgc;
267
268 memset(&cgc, 0, sizeof(struct packet_command));
269 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
270 cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
271 cgc.data_direction = DMA_NONE;
272 cgc.timeout = IOCTL_TIMEOUT;
273 return sr_do_ioctl(cd, &cgc);
274}
275
276int sr_lock_door(struct cdrom_device_info *cdi, int lock)
277{
278 Scsi_CD *cd = cdi->handle;
279
280 return scsi_set_medium_removal(cd->device, lock ?
281 SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
282}
283
284int sr_drive_status(struct cdrom_device_info *cdi, int slot)
285{
286 struct scsi_cd *cd = cdi->handle;
287 struct scsi_sense_hdr sshdr;
288 struct media_event_desc med;
289
290 if (CDSL_CURRENT != slot) {
291 /* we have no changer support */
292 return -EINVAL;
293 }
294 if (!scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
295 return CDS_DISC_OK;
296
297 /* SK/ASC/ASCQ of 2/4/1 means "unit is becoming ready" */
298 if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
299 && sshdr.asc == 0x04 && sshdr.ascq == 0x01)
300 return CDS_DRIVE_NOT_READY;
301
302 if (!cdrom_get_media_event(cdi, &med)) {
303 if (med.media_present)
304 return CDS_DISC_OK;
305 else if (med.door_open)
306 return CDS_TRAY_OPEN;
307 else
308 return CDS_NO_DISC;
309 }
310
311 /*
312 * SK/ASC/ASCQ of 2/4/2 means "initialization required"
313 * Using CD_TRAY_OPEN results in an START_STOP_UNIT to close
314 * the tray, which resolves the initialization requirement.
315 */
316 if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
317 && sshdr.asc == 0x04 && sshdr.ascq == 0x02)
318 return CDS_TRAY_OPEN;
319
320 /*
321 * 0x04 is format in progress .. but there must be a disc present!
322 */
323 if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04)
324 return CDS_DISC_OK;
325
326 /*
327 * If not using Mt Fuji extended media tray reports,
328 * just return TRAY_OPEN since ATAPI doesn't provide
329 * any other way to detect this...
330 */
331 if (scsi_sense_valid(&sshdr) &&
332 /* 0x3a is medium not present */
333 sshdr.asc == 0x3a)
334 return CDS_NO_DISC;
335 else
336 return CDS_TRAY_OPEN;
337
338 return CDS_DRIVE_NOT_READY;
339}
340
341int sr_disk_status(struct cdrom_device_info *cdi)
342{
343 Scsi_CD *cd = cdi->handle;
344 struct cdrom_tochdr toc_h;
345 struct cdrom_tocentry toc_e;
346 int i, rc, have_datatracks = 0;
347
348 /* look for data tracks */
349 rc = sr_read_tochdr(cdi, &toc_h);
350 if (rc)
351 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
352
353 for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) {
354 toc_e.cdte_track = i;
355 toc_e.cdte_format = CDROM_LBA;
356 if (sr_read_tocentry(cdi, &toc_e))
357 return CDS_NO_INFO;
358 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
359 have_datatracks = 1;
360 break;
361 }
362 }
363 if (!have_datatracks)
364 return CDS_AUDIO;
365
366 if (cd->xa_flag)
367 return CDS_XA_2_1;
368 else
369 return CDS_DATA_1;
370}
371
372int sr_get_last_session(struct cdrom_device_info *cdi,
373 struct cdrom_multisession *ms_info)
374{
375 Scsi_CD *cd = cdi->handle;
376
377 ms_info->addr.lba = cd->ms_offset;
378 ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
379
380 return 0;
381}
382
383int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
384{
385 Scsi_CD *cd = cdi->handle;
386 struct packet_command cgc;
387 char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
388 int result;
389
390 if (!buffer)
391 return -ENOMEM;
392
393 memset(&cgc, 0, sizeof(struct packet_command));
394 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
395 cgc.cmd[2] = 0x40; /* I do want the subchannel info */
396 cgc.cmd[3] = 0x02; /* Give me medium catalog number info */
397 cgc.cmd[8] = 24;
398 cgc.buffer = buffer;
399 cgc.buflen = 24;
400 cgc.data_direction = DMA_FROM_DEVICE;
401 cgc.timeout = IOCTL_TIMEOUT;
402 result = sr_do_ioctl(cd, &cgc);
403
404 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
405 mcn->medium_catalog_number[13] = 0;
406
407 kfree(buffer);
408 return result;
409}
410
411int sr_reset(struct cdrom_device_info *cdi)
412{
413 return 0;
414}
415
416int sr_select_speed(struct cdrom_device_info *cdi, int speed)
417{
418 Scsi_CD *cd = cdi->handle;
419 struct packet_command cgc;
420
421 if (speed == 0)
422 speed = 0xffff; /* set to max */
423 else
424 speed *= 177; /* Nx to kbyte/s */
425
426 memset(&cgc, 0, sizeof(struct packet_command));
427 cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
428 cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
429 cgc.cmd[3] = speed & 0xff; /* LSB */
430 cgc.data_direction = DMA_NONE;
431 cgc.timeout = IOCTL_TIMEOUT;
432
433 if (sr_do_ioctl(cd, &cgc))
434 return -EIO;
435 return 0;
436}
437
438/* ----------------------------------------------------------------------- */
439/* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
440/* because the generic cdrom driver does the user access stuff for us. */
441/* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
442/* sr_disk_status interface for the generic cdrom driver. */
443
444int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
445{
446 switch (cmd) {
447 case CDROMREADTOCHDR:
448 return sr_read_tochdr(cdi, arg);
449 case CDROMREADTOCENTRY:
450 return sr_read_tocentry(cdi, arg);
451 case CDROMPLAYTRKIND:
452 return sr_play_trkind(cdi, arg);
453 default:
454 return -EINVAL;
455 }
456}
457
458/* -----------------------------------------------------------------------
459 * a function to read all sorts of funny cdrom sectors using the READ_CD
460 * scsi-3 mmc command
461 *
462 * lba: linear block address
463 * format: 0 = data (anything)
464 * 1 = audio
465 * 2 = data (mode 1)
466 * 3 = data (mode 2)
467 * 4 = data (mode 2 form1)
468 * 5 = data (mode 2 form2)
469 * blksize: 2048 | 2336 | 2340 | 2352
470 */
471
472static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
473{
474 struct packet_command cgc;
475
476#ifdef DEBUG
477 sr_printk(KERN_INFO, cd, "sr_read_cd lba=%d format=%d blksize=%d\n",
478 lba, format, blksize);
479#endif
480
481 memset(&cgc, 0, sizeof(struct packet_command));
482 cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */
483 cgc.cmd[1] = ((format & 7) << 2);
484 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
485 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
486 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
487 cgc.cmd[5] = (unsigned char) lba & 0xff;
488 cgc.cmd[8] = 1;
489 switch (blksize) {
490 case 2336:
491 cgc.cmd[9] = 0x58;
492 break;
493 case 2340:
494 cgc.cmd[9] = 0x78;
495 break;
496 case 2352:
497 cgc.cmd[9] = 0xf8;
498 break;
499 default:
500 cgc.cmd[9] = 0x10;
501 break;
502 }
503 cgc.buffer = dest;
504 cgc.buflen = blksize;
505 cgc.data_direction = DMA_FROM_DEVICE;
506 cgc.timeout = IOCTL_TIMEOUT;
507 return sr_do_ioctl(cd, &cgc);
508}
509
510/*
511 * read sectors with blocksizes other than 2048
512 */
513
514static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
515{
516 struct packet_command cgc;
517 int rc;
518
519 /* we try the READ CD command first... */
520 if (cd->readcd_known) {
521 rc = sr_read_cd(cd, dest, lba, 0, blksize);
522 if (-EDRIVE_CANT_DO_THIS != rc)
523 return rc;
524 cd->readcd_known = 0;
525 sr_printk(KERN_INFO, cd,
526 "CDROM does'nt support READ CD (0xbe) command\n");
527 /* fall & retry the other way */
528 }
529 /* ... if this fails, we switch the blocksize using MODE SELECT */
530 if (blksize != cd->device->sector_size) {
531 if (0 != (rc = sr_set_blocklength(cd, blksize)))
532 return rc;
533 }
534#ifdef DEBUG
535 sr_printk(KERN_INFO, cd, "sr_read_sector lba=%d blksize=%d\n",
536 lba, blksize);
537#endif
538
539 memset(&cgc, 0, sizeof(struct packet_command));
540 cgc.cmd[0] = GPCMD_READ_10;
541 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
542 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
543 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
544 cgc.cmd[5] = (unsigned char) lba & 0xff;
545 cgc.cmd[8] = 1;
546 cgc.buffer = dest;
547 cgc.buflen = blksize;
548 cgc.data_direction = DMA_FROM_DEVICE;
549 cgc.timeout = IOCTL_TIMEOUT;
550 rc = sr_do_ioctl(cd, &cgc);
551
552 return rc;
553}
554
555/*
556 * read a sector in raw mode to check the sector format
557 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
558 */
559
560int sr_is_xa(Scsi_CD *cd)
561{
562 unsigned char *raw_sector;
563 int is_xa;
564
565 if (!xa_test)
566 return 0;
567
568 raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd));
569 if (!raw_sector)
570 return -ENOMEM;
571 if (0 == sr_read_sector(cd, cd->ms_offset + 16,
572 CD_FRAMESIZE_RAW1, raw_sector)) {
573 is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
574 } else {
575 /* read a raw sector failed for some reason. */
576 is_xa = -1;
577 }
578 kfree(raw_sector);
579#ifdef DEBUG
580 sr_printk(KERN_INFO, cd, "sr_is_xa: %d\n", is_xa);
581#endif
582 return is_xa;
583}