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);
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 static int test_unit_ready(Scsi_CD *cd)
280 struct packet_command cgc;
282 memset(&cgc, 0, sizeof(struct packet_command));
283 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
285 cgc.data_direction = DMA_NONE;
286 cgc.timeout = IOCTL_TIMEOUT;
287 return sr_do_ioctl(cd, &cgc);
290 int sr_tray_move(struct cdrom_device_info *cdi, int pos)
292 Scsi_CD *cd = cdi->handle;
293 struct packet_command cgc;
295 memset(&cgc, 0, sizeof(struct packet_command));
296 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
297 cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
298 cgc.data_direction = DMA_NONE;
299 cgc.timeout = IOCTL_TIMEOUT;
300 return sr_do_ioctl(cd, &cgc);
303 int sr_lock_door(struct cdrom_device_info *cdi, int lock)
305 Scsi_CD *cd = cdi->handle;
307 return scsi_set_medium_removal(cd->device, lock ?
308 SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
311 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
313 if (CDSL_CURRENT != slot) {
314 /* we have no changer support */
317 if (0 == test_unit_ready(cdi->handle))
320 return CDS_TRAY_OPEN;
323 int sr_disk_status(struct cdrom_device_info *cdi)
325 Scsi_CD *cd = cdi->handle;
326 struct cdrom_tochdr toc_h;
327 struct cdrom_tocentry toc_e;
328 int i, rc, have_datatracks = 0;
330 /* look for data tracks */
331 rc = sr_read_tochdr(cdi, &toc_h);
333 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
335 for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) {
336 toc_e.cdte_track = i;
337 toc_e.cdte_format = CDROM_LBA;
338 if (sr_read_tocentry(cdi, &toc_e))
340 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
345 if (!have_datatracks)
354 int sr_get_last_session(struct cdrom_device_info *cdi,
355 struct cdrom_multisession *ms_info)
357 Scsi_CD *cd = cdi->handle;
359 ms_info->addr.lba = cd->ms_offset;
360 ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
365 int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
367 Scsi_CD *cd = cdi->handle;
368 struct packet_command cgc;
369 char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
375 memset(&cgc, 0, sizeof(struct packet_command));
376 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
377 cgc.cmd[2] = 0x40; /* I do want the subchannel info */
378 cgc.cmd[3] = 0x02; /* Give me medium catalog number info */
382 cgc.data_direction = DMA_FROM_DEVICE;
383 cgc.timeout = IOCTL_TIMEOUT;
384 result = sr_do_ioctl(cd, &cgc);
386 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
387 mcn->medium_catalog_number[13] = 0;
393 int sr_reset(struct cdrom_device_info *cdi)
398 int sr_select_speed(struct cdrom_device_info *cdi, int speed)
400 Scsi_CD *cd = cdi->handle;
401 struct packet_command cgc;
404 speed = 0xffff; /* set to max */
406 speed *= 177; /* Nx to kbyte/s */
408 memset(&cgc, 0, sizeof(struct packet_command));
409 cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
410 cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
411 cgc.cmd[3] = speed & 0xff; /* LSB */
412 cgc.data_direction = DMA_NONE;
413 cgc.timeout = IOCTL_TIMEOUT;
415 if (sr_do_ioctl(cd, &cgc))
420 /* ----------------------------------------------------------------------- */
421 /* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
422 /* because the generic cdrom driver does the user access stuff for us. */
423 /* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
424 /* sr_disk_status interface for the generic cdrom driver. */
426 int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
429 case CDROMREADTOCHDR:
430 return sr_read_tochdr(cdi, arg);
431 case CDROMREADTOCENTRY:
432 return sr_read_tocentry(cdi, arg);
433 case CDROMPLAYTRKIND:
434 return sr_play_trkind(cdi, arg);
440 /* -----------------------------------------------------------------------
441 * a function to read all sorts of funny cdrom sectors using the READ_CD
444 * lba: linear block address
445 * format: 0 = data (anything)
449 * 4 = data (mode 2 form1)
450 * 5 = data (mode 2 form2)
451 * blksize: 2048 | 2336 | 2340 | 2352
454 static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
456 struct packet_command cgc;
459 printk("%s: sr_read_cd lba=%d format=%d blksize=%d\n",
460 cd->cdi.name, lba, format, blksize);
463 memset(&cgc, 0, sizeof(struct packet_command));
464 cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */
465 cgc.cmd[1] = ((format & 7) << 2);
466 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
467 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
468 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
469 cgc.cmd[5] = (unsigned char) lba & 0xff;
486 cgc.buflen = blksize;
487 cgc.data_direction = DMA_FROM_DEVICE;
488 cgc.timeout = IOCTL_TIMEOUT;
489 return sr_do_ioctl(cd, &cgc);
493 * read sectors with blocksizes other than 2048
496 static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
498 struct packet_command cgc;
501 /* we try the READ CD command first... */
502 if (cd->readcd_known) {
503 rc = sr_read_cd(cd, dest, lba, 0, blksize);
504 if (-EDRIVE_CANT_DO_THIS != rc)
506 cd->readcd_known = 0;
507 printk("CDROM does'nt support READ CD (0xbe) command\n");
508 /* fall & retry the other way */
510 /* ... if this fails, we switch the blocksize using MODE SELECT */
511 if (blksize != cd->device->sector_size) {
512 if (0 != (rc = sr_set_blocklength(cd, blksize)))
516 printk("%s: sr_read_sector lba=%d blksize=%d\n", cd->cdi.name, lba, blksize);
519 memset(&cgc, 0, sizeof(struct packet_command));
520 cgc.cmd[0] = GPCMD_READ_10;
521 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
522 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
523 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
524 cgc.cmd[5] = (unsigned char) lba & 0xff;
527 cgc.buflen = blksize;
528 cgc.data_direction = DMA_FROM_DEVICE;
529 cgc.timeout = IOCTL_TIMEOUT;
530 rc = sr_do_ioctl(cd, &cgc);
536 * read a sector in raw mode to check the sector format
537 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
540 int sr_is_xa(Scsi_CD *cd)
542 unsigned char *raw_sector;
548 raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd));
551 if (0 == sr_read_sector(cd, cd->ms_offset + 16,
552 CD_FRAMESIZE_RAW1, raw_sector)) {
553 is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
555 /* read a raw sector failed for some reason. */
560 printk("%s: sr_is_xa: %d\n", cd->cdi.name, is_xa);