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 <linux/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;
194 if (!scsi_block_when_processing_errors(SDev)) {
199 result = scsi_execute(SDev, cgc->cmd, cgc->data_direction,
200 cgc->buffer, cgc->buflen,
201 (unsigned char *)cgc->sense, &sshdr,
202 cgc->timeout, IOCTL_RETRIES, 0, 0, NULL);
204 /* Minimal error checking. Ignore cases we know about, and report the rest. */
205 if (driver_byte(result) != 0) {
206 switch (sshdr.sense_key) {
210 sr_printk(KERN_INFO, cd,
211 "disc change detected.\n");
216 case NOT_READY: /* This happens if there is no disc in drive */
217 if (sshdr.asc == 0x04 &&
218 sshdr.ascq == 0x01) {
219 /* sense: Logical unit is in process of becoming ready */
221 sr_printk(KERN_INFO, cd,
222 "CDROM not ready yet.\n");
223 if (retries++ < 10) {
224 /* sleep 2 sec and try again */
228 /* 20 secs are enough? */
234 sr_printk(KERN_INFO, cd,
235 "CDROM not ready. Make sure there "
236 "is a disc in the drive.\n");
239 case ILLEGAL_REQUEST:
241 if (sshdr.asc == 0x20 &&
243 /* sense: Invalid command operation code */
244 err = -EDRIVE_CANT_DO_THIS;
251 /* Wake up a process waiting for device */
257 /* ---------------------------------------------------------------------- */
258 /* interface to cdrom.c */
260 int sr_tray_move(struct cdrom_device_info *cdi, int pos)
262 Scsi_CD *cd = cdi->handle;
263 struct packet_command cgc;
265 memset(&cgc, 0, sizeof(struct packet_command));
266 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
267 cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
268 cgc.data_direction = DMA_NONE;
269 cgc.timeout = IOCTL_TIMEOUT;
270 return sr_do_ioctl(cd, &cgc);
273 int sr_lock_door(struct cdrom_device_info *cdi, int lock)
275 Scsi_CD *cd = cdi->handle;
277 return scsi_set_medium_removal(cd->device, lock ?
278 SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
281 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
283 struct scsi_cd *cd = cdi->handle;
284 struct scsi_sense_hdr sshdr;
285 struct media_event_desc med;
287 if (CDSL_CURRENT != slot) {
288 /* we have no changer support */
291 if (!scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr))
294 /* SK/ASC/ASCQ of 2/4/1 means "unit is becoming ready" */
295 if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
296 && sshdr.asc == 0x04 && sshdr.ascq == 0x01)
297 return CDS_DRIVE_NOT_READY;
299 if (!cdrom_get_media_event(cdi, &med)) {
300 if (med.media_present)
302 else if (med.door_open)
303 return CDS_TRAY_OPEN;
309 * SK/ASC/ASCQ of 2/4/2 means "initialization required"
310 * Using CD_TRAY_OPEN results in an START_STOP_UNIT to close
311 * the tray, which resolves the initialization requirement.
313 if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY
314 && sshdr.asc == 0x04 && sshdr.ascq == 0x02)
315 return CDS_TRAY_OPEN;
318 * 0x04 is format in progress .. but there must be a disc present!
320 if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04)
324 * If not using Mt Fuji extended media tray reports,
325 * just return TRAY_OPEN since ATAPI doesn't provide
326 * any other way to detect this...
328 if (scsi_sense_valid(&sshdr) &&
329 /* 0x3a is medium not present */
333 return CDS_TRAY_OPEN;
335 return CDS_DRIVE_NOT_READY;
338 int sr_disk_status(struct cdrom_device_info *cdi)
340 Scsi_CD *cd = cdi->handle;
341 struct cdrom_tochdr toc_h;
342 struct cdrom_tocentry toc_e;
343 int i, rc, have_datatracks = 0;
345 /* look for data tracks */
346 rc = sr_read_tochdr(cdi, &toc_h);
348 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
350 for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) {
351 toc_e.cdte_track = i;
352 toc_e.cdte_format = CDROM_LBA;
353 if (sr_read_tocentry(cdi, &toc_e))
355 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
360 if (!have_datatracks)
369 int sr_get_last_session(struct cdrom_device_info *cdi,
370 struct cdrom_multisession *ms_info)
372 Scsi_CD *cd = cdi->handle;
374 ms_info->addr.lba = cd->ms_offset;
375 ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
380 int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
382 Scsi_CD *cd = cdi->handle;
383 struct packet_command cgc;
384 char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
390 memset(&cgc, 0, sizeof(struct packet_command));
391 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
392 cgc.cmd[2] = 0x40; /* I do want the subchannel info */
393 cgc.cmd[3] = 0x02; /* Give me medium catalog number info */
397 cgc.data_direction = DMA_FROM_DEVICE;
398 cgc.timeout = IOCTL_TIMEOUT;
399 result = sr_do_ioctl(cd, &cgc);
401 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
402 mcn->medium_catalog_number[13] = 0;
408 int sr_reset(struct cdrom_device_info *cdi)
413 int sr_select_speed(struct cdrom_device_info *cdi, int speed)
415 Scsi_CD *cd = cdi->handle;
416 struct packet_command cgc;
419 speed = 0xffff; /* set to max */
421 speed *= 177; /* Nx to kbyte/s */
423 memset(&cgc, 0, sizeof(struct packet_command));
424 cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
425 cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
426 cgc.cmd[3] = speed & 0xff; /* LSB */
427 cgc.data_direction = DMA_NONE;
428 cgc.timeout = IOCTL_TIMEOUT;
430 if (sr_do_ioctl(cd, &cgc))
435 /* ----------------------------------------------------------------------- */
436 /* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
437 /* because the generic cdrom driver does the user access stuff for us. */
438 /* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
439 /* sr_disk_status interface for the generic cdrom driver. */
441 int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
444 case CDROMREADTOCHDR:
445 return sr_read_tochdr(cdi, arg);
446 case CDROMREADTOCENTRY:
447 return sr_read_tocentry(cdi, arg);
448 case CDROMPLAYTRKIND:
449 return sr_play_trkind(cdi, arg);
455 /* -----------------------------------------------------------------------
456 * a function to read all sorts of funny cdrom sectors using the READ_CD
459 * lba: linear block address
460 * format: 0 = data (anything)
464 * 4 = data (mode 2 form1)
465 * 5 = data (mode 2 form2)
466 * blksize: 2048 | 2336 | 2340 | 2352
469 static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
471 struct packet_command cgc;
474 sr_printk(KERN_INFO, cd, "sr_read_cd lba=%d format=%d blksize=%d\n",
475 lba, format, blksize);
478 memset(&cgc, 0, sizeof(struct packet_command));
479 cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */
480 cgc.cmd[1] = ((format & 7) << 2);
481 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
482 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
483 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
484 cgc.cmd[5] = (unsigned char) lba & 0xff;
501 cgc.buflen = blksize;
502 cgc.data_direction = DMA_FROM_DEVICE;
503 cgc.timeout = IOCTL_TIMEOUT;
504 return sr_do_ioctl(cd, &cgc);
508 * read sectors with blocksizes other than 2048
511 static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
513 struct packet_command cgc;
516 /* we try the READ CD command first... */
517 if (cd->readcd_known) {
518 rc = sr_read_cd(cd, dest, lba, 0, blksize);
519 if (-EDRIVE_CANT_DO_THIS != rc)
521 cd->readcd_known = 0;
522 sr_printk(KERN_INFO, cd,
523 "CDROM does'nt support READ CD (0xbe) command\n");
524 /* fall & retry the other way */
526 /* ... if this fails, we switch the blocksize using MODE SELECT */
527 if (blksize != cd->device->sector_size) {
528 if (0 != (rc = sr_set_blocklength(cd, blksize)))
532 sr_printk(KERN_INFO, cd, "sr_read_sector lba=%d blksize=%d\n",
536 memset(&cgc, 0, sizeof(struct packet_command));
537 cgc.cmd[0] = GPCMD_READ_10;
538 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
539 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
540 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
541 cgc.cmd[5] = (unsigned char) lba & 0xff;
544 cgc.buflen = blksize;
545 cgc.data_direction = DMA_FROM_DEVICE;
546 cgc.timeout = IOCTL_TIMEOUT;
547 rc = sr_do_ioctl(cd, &cgc);
553 * read a sector in raw mode to check the sector format
554 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
557 int sr_is_xa(Scsi_CD *cd)
559 unsigned char *raw_sector;
565 raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd));
568 if (0 == sr_read_sector(cd, cd->ms_offset + 16,
569 CD_FRAMESIZE_RAW1, raw_sector)) {
570 is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
572 /* read a raw sector failed for some reason. */
577 sr_printk(KERN_INFO, cd, "sr_is_xa: %d\n", is_xa);