1 #include <linux/kernel.h>
4 #include <linux/errno.h>
5 #include <linux/string.h>
6 #include <linux/blkdev.h>
7 #include <linux/blkpg.h>
8 #include <linux/cdrom.h>
9 #include <linux/delay.h>
11 #include <asm/uaccess.h>
13 #include <scsi/scsi.h>
14 #include <scsi/scsi_dbg.h>
15 #include <scsi/scsi_device.h>
16 #include <scsi/scsi_eh.h>
17 #include <scsi/scsi_host.h>
18 #include <scsi/scsi_ioctl.h>
19 #include <scsi/scsi_cmnd.h>
27 /* The sr_is_xa() seems to trigger firmware bugs with some drives :-(
28 * It is off by default and can be turned on with this module parameter */
29 static int xa_test
= 0;
31 module_param(xa_test
, int, S_IRUGO
| S_IWUSR
);
33 /* primitive to determine whether we need to have GFP_DMA set based on
34 * the status of the unchecked_isa_dma flag in the host structure */
35 #define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0)
38 static int sr_read_tochdr(struct cdrom_device_info
*cdi
,
39 struct cdrom_tochdr
*tochdr
)
41 struct scsi_cd
*cd
= cdi
->handle
;
42 struct packet_command cgc
;
44 unsigned char *buffer
;
46 buffer
= kmalloc(32, GFP_KERNEL
| SR_GFP_DMA(cd
));
50 memset(&cgc
, 0, sizeof(struct packet_command
));
51 cgc
.timeout
= IOCTL_TIMEOUT
;
52 cgc
.cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
53 cgc
.cmd
[8] = 12; /* LSB of length */
57 cgc
.data_direction
= DMA_FROM_DEVICE
;
59 result
= sr_do_ioctl(cd
, &cgc
);
61 tochdr
->cdth_trk0
= buffer
[2];
62 tochdr
->cdth_trk1
= buffer
[3];
68 static int sr_read_tocentry(struct cdrom_device_info
*cdi
,
69 struct cdrom_tocentry
*tocentry
)
71 struct scsi_cd
*cd
= cdi
->handle
;
72 struct packet_command cgc
;
74 unsigned char *buffer
;
76 buffer
= kmalloc(32, GFP_KERNEL
| SR_GFP_DMA(cd
));
80 memset(&cgc
, 0, sizeof(struct packet_command
));
81 cgc
.timeout
= IOCTL_TIMEOUT
;
82 cgc
.cmd
[0] = GPCMD_READ_TOC_PMA_ATIP
;
83 cgc
.cmd
[1] |= (tocentry
->cdte_format
== CDROM_MSF
) ? 0x02 : 0;
84 cgc
.cmd
[6] = tocentry
->cdte_track
;
85 cgc
.cmd
[8] = 12; /* LSB of length */
88 cgc
.data_direction
= DMA_FROM_DEVICE
;
90 result
= sr_do_ioctl(cd
, &cgc
);
92 tocentry
->cdte_ctrl
= buffer
[5] & 0xf;
93 tocentry
->cdte_adr
= buffer
[5] >> 4;
94 tocentry
->cdte_datamode
= (tocentry
->cdte_ctrl
& 0x04) ? 1 : 0;
95 if (tocentry
->cdte_format
== CDROM_MSF
) {
96 tocentry
->cdte_addr
.msf
.minute
= buffer
[9];
97 tocentry
->cdte_addr
.msf
.second
= buffer
[10];
98 tocentry
->cdte_addr
.msf
.frame
= buffer
[11];
100 tocentry
->cdte_addr
.lba
= (((((buffer
[8] << 8) + buffer
[9]) << 8)
101 + buffer
[10]) << 8) + buffer
[11];
107 #define IOCTL_RETRIES 3
109 /* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives
110 are emulating a SCSI device via the idescsi module, they need to have
111 CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */
113 static int sr_fake_playtrkind(struct cdrom_device_info
*cdi
, struct cdrom_ti
*ti
)
115 struct cdrom_tocentry trk0_te
, trk1_te
;
116 struct cdrom_tochdr tochdr
;
117 struct packet_command cgc
;
120 ret
= sr_read_tochdr(cdi
, &tochdr
);
124 ntracks
= tochdr
.cdth_trk1
- tochdr
.cdth_trk0
+ 1;
126 if (ti
->cdti_trk1
== ntracks
)
127 ti
->cdti_trk1
= CDROM_LEADOUT
;
128 else if (ti
->cdti_trk1
!= CDROM_LEADOUT
)
131 trk0_te
.cdte_track
= ti
->cdti_trk0
;
132 trk0_te
.cdte_format
= CDROM_MSF
;
133 trk1_te
.cdte_track
= ti
->cdti_trk1
;
134 trk1_te
.cdte_format
= CDROM_MSF
;
136 ret
= sr_read_tocentry(cdi
, &trk0_te
);
139 ret
= sr_read_tocentry(cdi
, &trk1_te
);
143 memset(&cgc
, 0, sizeof(struct packet_command
));
144 cgc
.cmd
[0] = GPCMD_PLAY_AUDIO_MSF
;
145 cgc
.cmd
[3] = trk0_te
.cdte_addr
.msf
.minute
;
146 cgc
.cmd
[4] = trk0_te
.cdte_addr
.msf
.second
;
147 cgc
.cmd
[5] = trk0_te
.cdte_addr
.msf
.frame
;
148 cgc
.cmd
[6] = trk1_te
.cdte_addr
.msf
.minute
;
149 cgc
.cmd
[7] = trk1_te
.cdte_addr
.msf
.second
;
150 cgc
.cmd
[8] = trk1_te
.cdte_addr
.msf
.frame
;
151 cgc
.data_direction
= DMA_NONE
;
152 cgc
.timeout
= IOCTL_TIMEOUT
;
153 return sr_do_ioctl(cdi
->handle
, &cgc
);
156 static int sr_play_trkind(struct cdrom_device_info
*cdi
,
160 struct scsi_cd
*cd
= cdi
->handle
;
161 struct packet_command cgc
;
164 memset(&cgc
, 0, sizeof(struct packet_command
));
165 cgc
.timeout
= IOCTL_TIMEOUT
;
166 cgc
.cmd
[0] = GPCMD_PLAYAUDIO_TI
;
167 cgc
.cmd
[4] = ti
->cdti_trk0
;
168 cgc
.cmd
[5] = ti
->cdti_ind0
;
169 cgc
.cmd
[7] = ti
->cdti_trk1
;
170 cgc
.cmd
[8] = ti
->cdti_ind1
;
171 cgc
.data_direction
= DMA_NONE
;
173 result
= sr_do_ioctl(cd
, &cgc
);
174 if (result
== -EDRIVE_CANT_DO_THIS
)
175 result
= sr_fake_playtrkind(cdi
, ti
);
180 /* We do our own retries because we want to know what the specific
181 error code is. Normally the UNIT_ATTENTION code will automatically
182 clear after one error */
184 int sr_do_ioctl(Scsi_CD
*cd
, struct packet_command
*cgc
)
186 struct scsi_device
*SDev
;
187 struct scsi_sense_hdr sshdr
;
188 int result
, err
= 0, retries
= 0;
189 struct request_sense
*sense
= cgc
->sense
;
194 sense
= kmalloc(SCSI_SENSE_BUFFERSIZE
, GFP_KERNEL
);
202 if (!scsi_block_when_processing_errors(SDev
)) {
207 memset(sense
, 0, sizeof(*sense
));
208 result
= scsi_execute(SDev
, cgc
->cmd
, cgc
->data_direction
,
209 cgc
->buffer
, cgc
->buflen
, (char *)sense
,
210 cgc
->timeout
, IOCTL_RETRIES
, 0, NULL
);
212 scsi_normalize_sense((char *)sense
, sizeof(*sense
), &sshdr
);
214 /* Minimal error checking. Ignore cases we know about, and report the rest. */
215 if (driver_byte(result
) != 0) {
216 switch (sshdr
.sense_key
) {
220 printk(KERN_INFO
"%s: disc change detected.\n", cd
->cdi
.name
);
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 */
230 printk(KERN_INFO
"%s: CDROM not ready yet.\n", cd
->cdi
.name
);
231 if (retries
++ < 10) {
232 /* sleep 2 sec and try again */
236 /* 20 secs are enough? */
242 printk(KERN_INFO
"%s: CDROM not ready. Make sure there is a disc in the drive.\n", cd
->cdi
.name
);
244 scsi_print_sense_hdr("sr", &sshdr
);
248 case ILLEGAL_REQUEST
:
250 if (sshdr
.asc
== 0x20 &&
252 /* sense: Invalid command operation code */
253 err
= -EDRIVE_CANT_DO_THIS
;
255 __scsi_print_command(cgc
->cmd
);
256 scsi_print_sense_hdr("sr", &sshdr
);
260 printk(KERN_ERR
"%s: CDROM (ioctl) error, command: ", cd
->cdi
.name
);
261 __scsi_print_command(cgc
->cmd
);
262 scsi_print_sense_hdr("sr", &sshdr
);
267 /* Wake up a process waiting for device */
275 /* ---------------------------------------------------------------------- */
276 /* interface to cdrom.c */
278 int sr_tray_move(struct cdrom_device_info
*cdi
, int pos
)
280 Scsi_CD
*cd
= cdi
->handle
;
281 struct packet_command cgc
;
283 memset(&cgc
, 0, sizeof(struct packet_command
));
284 cgc
.cmd
[0] = GPCMD_START_STOP_UNIT
;
285 cgc
.cmd
[4] = (pos
== 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
286 cgc
.data_direction
= DMA_NONE
;
287 cgc
.timeout
= IOCTL_TIMEOUT
;
288 return sr_do_ioctl(cd
, &cgc
);
291 int sr_lock_door(struct cdrom_device_info
*cdi
, int lock
)
293 Scsi_CD
*cd
= cdi
->handle
;
295 return scsi_set_medium_removal(cd
->device
, lock
?
296 SCSI_REMOVAL_PREVENT
: SCSI_REMOVAL_ALLOW
);
299 int sr_drive_status(struct cdrom_device_info
*cdi
, int slot
)
301 struct scsi_cd
*cd
= cdi
->handle
;
302 struct scsi_sense_hdr sshdr
;
303 struct media_event_desc med
;
305 if (CDSL_CURRENT
!= slot
) {
306 /* we have no changer support */
309 if (0 == sr_test_unit_ready(cd
->device
, &sshdr
))
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 * 0x04 is format in progress .. but there must be a disc present!
324 if (sshdr
.sense_key
== NOT_READY
&& sshdr
.asc
== 0x04)
328 * If not using Mt Fuji extended media tray reports,
329 * just return TRAY_OPEN since ATAPI doesn't provide
330 * any other way to detect this...
332 if (scsi_sense_valid(&sshdr
) &&
333 /* 0x3a is medium not present */
337 return CDS_TRAY_OPEN
;
339 return CDS_DRIVE_NOT_READY
;
342 int sr_disk_status(struct cdrom_device_info
*cdi
)
344 Scsi_CD
*cd
= cdi
->handle
;
345 struct cdrom_tochdr toc_h
;
346 struct cdrom_tocentry toc_e
;
347 int i
, rc
, have_datatracks
= 0;
349 /* look for data tracks */
350 rc
= sr_read_tochdr(cdi
, &toc_h
);
352 return (rc
== -ENOMEDIUM
) ? CDS_NO_DISC
: CDS_NO_INFO
;
354 for (i
= toc_h
.cdth_trk0
; i
<= toc_h
.cdth_trk1
; i
++) {
355 toc_e
.cdte_track
= i
;
356 toc_e
.cdte_format
= CDROM_LBA
;
357 if (sr_read_tocentry(cdi
, &toc_e
))
359 if (toc_e
.cdte_ctrl
& CDROM_DATA_TRACK
) {
364 if (!have_datatracks
)
373 int sr_get_last_session(struct cdrom_device_info
*cdi
,
374 struct cdrom_multisession
*ms_info
)
376 Scsi_CD
*cd
= cdi
->handle
;
378 ms_info
->addr
.lba
= cd
->ms_offset
;
379 ms_info
->xa_flag
= cd
->xa_flag
|| cd
->ms_offset
> 0;
384 int sr_get_mcn(struct cdrom_device_info
*cdi
, struct cdrom_mcn
*mcn
)
386 Scsi_CD
*cd
= cdi
->handle
;
387 struct packet_command cgc
;
388 char *buffer
= kmalloc(32, GFP_KERNEL
| SR_GFP_DMA(cd
));
394 memset(&cgc
, 0, sizeof(struct packet_command
));
395 cgc
.cmd
[0] = GPCMD_READ_SUBCHANNEL
;
396 cgc
.cmd
[2] = 0x40; /* I do want the subchannel info */
397 cgc
.cmd
[3] = 0x02; /* Give me medium catalog number info */
401 cgc
.data_direction
= DMA_FROM_DEVICE
;
402 cgc
.timeout
= IOCTL_TIMEOUT
;
403 result
= sr_do_ioctl(cd
, &cgc
);
405 memcpy(mcn
->medium_catalog_number
, buffer
+ 9, 13);
406 mcn
->medium_catalog_number
[13] = 0;
412 int sr_reset(struct cdrom_device_info
*cdi
)
417 int sr_select_speed(struct cdrom_device_info
*cdi
, int speed
)
419 Scsi_CD
*cd
= cdi
->handle
;
420 struct packet_command cgc
;
423 speed
= 0xffff; /* set to max */
425 speed
*= 177; /* Nx to kbyte/s */
427 memset(&cgc
, 0, sizeof(struct packet_command
));
428 cgc
.cmd
[0] = GPCMD_SET_SPEED
; /* SET CD SPEED */
429 cgc
.cmd
[2] = (speed
>> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
430 cgc
.cmd
[3] = speed
& 0xff; /* LSB */
431 cgc
.data_direction
= DMA_NONE
;
432 cgc
.timeout
= IOCTL_TIMEOUT
;
434 if (sr_do_ioctl(cd
, &cgc
))
439 /* ----------------------------------------------------------------------- */
440 /* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
441 /* because the generic cdrom driver does the user access stuff for us. */
442 /* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
443 /* sr_disk_status interface for the generic cdrom driver. */
445 int sr_audio_ioctl(struct cdrom_device_info
*cdi
, unsigned int cmd
, void *arg
)
448 case CDROMREADTOCHDR
:
449 return sr_read_tochdr(cdi
, arg
);
450 case CDROMREADTOCENTRY
:
451 return sr_read_tocentry(cdi
, arg
);
452 case CDROMPLAYTRKIND
:
453 return sr_play_trkind(cdi
, arg
);
459 /* -----------------------------------------------------------------------
460 * a function to read all sorts of funny cdrom sectors using the READ_CD
463 * lba: linear block address
464 * format: 0 = data (anything)
468 * 4 = data (mode 2 form1)
469 * 5 = data (mode 2 form2)
470 * blksize: 2048 | 2336 | 2340 | 2352
473 static int sr_read_cd(Scsi_CD
*cd
, unsigned char *dest
, int lba
, int format
, int blksize
)
475 struct packet_command cgc
;
478 printk("%s: sr_read_cd lba=%d format=%d blksize=%d\n",
479 cd
->cdi
.name
, lba
, format
, blksize
);
482 memset(&cgc
, 0, sizeof(struct packet_command
));
483 cgc
.cmd
[0] = GPCMD_READ_CD
; /* READ_CD */
484 cgc
.cmd
[1] = ((format
& 7) << 2);
485 cgc
.cmd
[2] = (unsigned char) (lba
>> 24) & 0xff;
486 cgc
.cmd
[3] = (unsigned char) (lba
>> 16) & 0xff;
487 cgc
.cmd
[4] = (unsigned char) (lba
>> 8) & 0xff;
488 cgc
.cmd
[5] = (unsigned char) lba
& 0xff;
505 cgc
.buflen
= blksize
;
506 cgc
.data_direction
= DMA_FROM_DEVICE
;
507 cgc
.timeout
= IOCTL_TIMEOUT
;
508 return sr_do_ioctl(cd
, &cgc
);
512 * read sectors with blocksizes other than 2048
515 static int sr_read_sector(Scsi_CD
*cd
, int lba
, int blksize
, unsigned char *dest
)
517 struct packet_command cgc
;
520 /* we try the READ CD command first... */
521 if (cd
->readcd_known
) {
522 rc
= sr_read_cd(cd
, dest
, lba
, 0, blksize
);
523 if (-EDRIVE_CANT_DO_THIS
!= rc
)
525 cd
->readcd_known
= 0;
526 printk("CDROM does'nt support READ CD (0xbe) command\n");
527 /* fall & retry the other way */
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
)))
535 printk("%s: sr_read_sector lba=%d blksize=%d\n", cd
->cdi
.name
, lba
, blksize
);
538 memset(&cgc
, 0, sizeof(struct packet_command
));
539 cgc
.cmd
[0] = GPCMD_READ_10
;
540 cgc
.cmd
[2] = (unsigned char) (lba
>> 24) & 0xff;
541 cgc
.cmd
[3] = (unsigned char) (lba
>> 16) & 0xff;
542 cgc
.cmd
[4] = (unsigned char) (lba
>> 8) & 0xff;
543 cgc
.cmd
[5] = (unsigned char) lba
& 0xff;
546 cgc
.buflen
= blksize
;
547 cgc
.data_direction
= DMA_FROM_DEVICE
;
548 cgc
.timeout
= IOCTL_TIMEOUT
;
549 rc
= sr_do_ioctl(cd
, &cgc
);
555 * read a sector in raw mode to check the sector format
556 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
559 int sr_is_xa(Scsi_CD
*cd
)
561 unsigned char *raw_sector
;
567 raw_sector
= kmalloc(2048, GFP_KERNEL
| SR_GFP_DMA(cd
));
570 if (0 == sr_read_sector(cd
, cd
->ms_offset
+ 16,
571 CD_FRAMESIZE_RAW1
, raw_sector
)) {
572 is_xa
= (raw_sector
[3] == 0x02) ? 1 : 0;
574 /* read a raw sector failed for some reason. */
579 printk("%s: sr_is_xa: %d\n", cd
->cdi
.name
, is_xa
);
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