1 #include <linux/kernel.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>
13 #include <asm/uaccess.h>
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>
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 */
31 static int xa_test = 0;
33 module_param(xa_test, int, S_IRUGO | S_IWUSR);
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)
39 static int sr_read_tochdr(struct cdrom_device_info *cdi,
40 struct cdrom_tochdr *tochdr)
42 struct scsi_cd *cd = cdi->handle;
43 struct packet_command cgc;
45 unsigned char *buffer;
47 buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
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 */
58 cgc.data_direction = DMA_FROM_DEVICE;
60 result = sr_do_ioctl(cd, &cgc);
62 tochdr->cdth_trk0 = buffer[2];
63 tochdr->cdth_trk1 = buffer[3];
69 static int sr_read_tocentry(struct cdrom_device_info *cdi,
70 struct cdrom_tocentry *tocentry)
72 struct scsi_cd *cd = cdi->handle;
73 struct packet_command cgc;
75 unsigned char *buffer;
77 buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
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 */
89 cgc.data_direction = DMA_FROM_DEVICE;
91 result = sr_do_ioctl(cd, &cgc);
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];
101 tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8)
102 + buffer[10]) << 8) + buffer[11];
108 #define IOCTL_RETRIES 3
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 */
114 static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti)
116 struct cdrom_tocentry trk0_te, trk1_te;
117 struct cdrom_tochdr tochdr;
118 struct packet_command cgc;
121 ret = sr_read_tochdr(cdi, &tochdr);
125 ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1;
127 if (ti->cdti_trk1 == ntracks)
128 ti->cdti_trk1 = CDROM_LEADOUT;
129 else if (ti->cdti_trk1 != CDROM_LEADOUT)
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;
137 ret = sr_read_tocentry(cdi, &trk0_te);
140 ret = sr_read_tocentry(cdi, &trk1_te);
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);
157 static int sr_play_trkind(struct cdrom_device_info *cdi,
161 struct scsi_cd *cd = cdi->handle;
162 struct packet_command cgc;
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;
174 result = sr_do_ioctl(cd, &cgc);
175 if (result == -EDRIVE_CANT_DO_THIS)
176 result = sr_fake_playtrkind(cdi, ti);
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 */
185 int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
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;
195 sense = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
203 if (!scsi_block_when_processing_errors(SDev)) {
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);
213 scsi_normalize_sense((char *)sense, sizeof(*sense), &sshdr);
215 /* Minimal error checking. Ignore cases we know about, and report the rest. */
216 if (driver_byte(result) != 0) {
217 switch (sshdr.sense_key) {
221 sr_printk(KERN_INFO, cd,
222 "disc change detected.\n");
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 */
232 sr_printk(KERN_INFO, cd,
233 "CDROM not ready yet.\n");
234 if (retries++ < 10) {
235 /* sleep 2 sec and try again */
239 /* 20 secs are enough? */
245 sr_printk(KERN_INFO, cd,
246 "CDROM not ready. Make sure there "
247 "is a disc in the drive.\n");
250 case ILLEGAL_REQUEST:
252 if (sshdr.asc == 0x20 &&
254 /* sense: Invalid command operation code */
255 err = -EDRIVE_CANT_DO_THIS;
262 /* Wake up a process waiting for device */
270 /* ---------------------------------------------------------------------- */
271 /* interface to cdrom.c */
273 int sr_tray_move(struct cdrom_device_info *cdi, int pos)
275 Scsi_CD *cd = cdi->handle;
276 struct packet_command cgc;
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);
286 int sr_lock_door(struct cdrom_device_info *cdi, int lock)
288 Scsi_CD *cd = cdi->handle;
290 return scsi_set_medium_removal(cd->device, lock ?
291 SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
294 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
296 struct scsi_cd *cd = cdi->handle;
297 struct scsi_sense_hdr sshdr;
298 struct media_event_desc med;
300 if (CDSL_CURRENT != slot) {
301 /* we have no changer support */
304 if (!scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
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;
312 if (!cdrom_get_media_event(cdi, &med)) {
313 if (med.media_present)
315 else if (med.door_open)
316 return CDS_TRAY_OPEN;
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.
326 if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
327 && sshdr.asc == 0x04 && sshdr.ascq == 0x02)
328 return CDS_TRAY_OPEN;
331 * 0x04 is format in progress .. but there must be a disc present!
333 if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04)
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...
341 if (scsi_sense_valid(&sshdr) &&
342 /* 0x3a is medium not present */
346 return CDS_TRAY_OPEN;
348 return CDS_DRIVE_NOT_READY;
351 int sr_disk_status(struct cdrom_device_info *cdi)
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;
358 /* look for data tracks */
359 rc = sr_read_tochdr(cdi, &toc_h);
361 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
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))
368 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
373 if (!have_datatracks)
382 int sr_get_last_session(struct cdrom_device_info *cdi,
383 struct cdrom_multisession *ms_info)
385 Scsi_CD *cd = cdi->handle;
387 ms_info->addr.lba = cd->ms_offset;
388 ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
393 int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
395 Scsi_CD *cd = cdi->handle;
396 struct packet_command cgc;
397 char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
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 */
410 cgc.data_direction = DMA_FROM_DEVICE;
411 cgc.timeout = IOCTL_TIMEOUT;
412 result = sr_do_ioctl(cd, &cgc);
414 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
415 mcn->medium_catalog_number[13] = 0;
421 int sr_reset(struct cdrom_device_info *cdi)
426 int sr_select_speed(struct cdrom_device_info *cdi, int speed)
428 Scsi_CD *cd = cdi->handle;
429 struct packet_command cgc;
432 speed = 0xffff; /* set to max */
434 speed *= 177; /* Nx to kbyte/s */
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;
443 if (sr_do_ioctl(cd, &cgc))
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. */
454 int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
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);
468 /* -----------------------------------------------------------------------
469 * a function to read all sorts of funny cdrom sectors using the READ_CD
472 * lba: linear block address
473 * format: 0 = data (anything)
477 * 4 = data (mode 2 form1)
478 * 5 = data (mode 2 form2)
479 * blksize: 2048 | 2336 | 2340 | 2352
482 static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
484 struct packet_command cgc;
487 sr_printk(KERN_INFO, cd, "sr_read_cd lba=%d format=%d blksize=%d\n",
488 lba, format, blksize);
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;
514 cgc.buflen = blksize;
515 cgc.data_direction = DMA_FROM_DEVICE;
516 cgc.timeout = IOCTL_TIMEOUT;
517 return sr_do_ioctl(cd, &cgc);
521 * read sectors with blocksizes other than 2048
524 static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
526 struct packet_command cgc;
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)
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 */
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)))
545 sr_printk(KERN_INFO, cd, "sr_read_sector lba=%d blksize=%d\n",
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;
557 cgc.buflen = blksize;
558 cgc.data_direction = DMA_FROM_DEVICE;
559 cgc.timeout = IOCTL_TIMEOUT;
560 rc = sr_do_ioctl(cd, &cgc);
566 * read a sector in raw mode to check the sector format
567 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
570 int sr_is_xa(Scsi_CD *cd)
572 unsigned char *raw_sector;
578 raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd));
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;
585 /* read a raw sector failed for some reason. */
590 sr_printk(KERN_INFO, cd, "sr_is_xa: %d\n", is_xa);