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