1 #include <linux/kernel.h>
2 #include <linux/sched.h>
5 #include <linux/errno.h>
6 #include <linux/string.h>
7 #include <linux/blkdev.h>
8 #include <linux/blkpg.h>
9 #include <linux/cdrom.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_request.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 #define IOCTL_RETRIES 3
33 /* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives
34 are emulating a SCSI device via the idescsi module, they need to have
35 CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */
37 static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti)
39 struct cdrom_tocentry trk0_te, trk1_te;
40 struct cdrom_tochdr tochdr;
41 struct packet_command cgc;
44 if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &tochdr)))
47 ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1;
49 if (ti->cdti_trk1 == ntracks)
50 ti->cdti_trk1 = CDROM_LEADOUT;
51 else if (ti->cdti_trk1 != CDROM_LEADOUT)
54 trk0_te.cdte_track = ti->cdti_trk0;
55 trk0_te.cdte_format = CDROM_MSF;
56 trk1_te.cdte_track = ti->cdti_trk1;
57 trk1_te.cdte_format = CDROM_MSF;
59 if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk0_te)))
61 if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk1_te)))
64 memset(&cgc, 0, sizeof(struct packet_command));
65 cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
66 cgc.cmd[3] = trk0_te.cdte_addr.msf.minute;
67 cgc.cmd[4] = trk0_te.cdte_addr.msf.second;
68 cgc.cmd[5] = trk0_te.cdte_addr.msf.frame;
69 cgc.cmd[6] = trk1_te.cdte_addr.msf.minute;
70 cgc.cmd[7] = trk1_te.cdte_addr.msf.second;
71 cgc.cmd[8] = trk1_te.cdte_addr.msf.frame;
72 cgc.data_direction = DMA_NONE;
73 cgc.timeout = IOCTL_TIMEOUT;
74 return sr_do_ioctl(cdi->handle, &cgc);
77 /* We do our own retries because we want to know what the specific
78 error code is. Normally the UNIT_ATTENTION code will automatically
79 clear after one error */
81 int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
83 struct scsi_request *SRpnt;
84 struct scsi_device *SDev;
86 int result, err = 0, retries = 0;
89 SRpnt = scsi_allocate_request(SDev, GFP_KERNEL);
91 printk(KERN_ERR "Unable to allocate SCSI request in sr_do_ioctl");
95 SRpnt->sr_data_direction = cgc->data_direction;
98 if (!scsi_block_when_processing_errors(SDev)) {
103 scsi_wait_req(SRpnt, cgc->cmd, cgc->buffer, cgc->buflen,
104 cgc->timeout, IOCTL_RETRIES);
106 req = SRpnt->sr_request;
107 if (SRpnt->sr_buffer && req->buffer && SRpnt->sr_buffer != req->buffer) {
108 memcpy(req->buffer, SRpnt->sr_buffer, SRpnt->sr_bufflen);
109 kfree(SRpnt->sr_buffer);
110 SRpnt->sr_buffer = req->buffer;
113 result = SRpnt->sr_result;
115 /* Minimal error checking. Ignore cases we know about, and report the rest. */
116 if (driver_byte(result) != 0) {
117 switch (SRpnt->sr_sense_buffer[2] & 0xf) {
121 printk(KERN_INFO "%s: disc change detected.\n", cd->cdi.name);
126 case NOT_READY: /* This happens if there is no disc in drive */
127 if (SRpnt->sr_sense_buffer[12] == 0x04 &&
128 SRpnt->sr_sense_buffer[13] == 0x01) {
129 /* sense: Logical unit is in process of becoming ready */
131 printk(KERN_INFO "%s: CDROM not ready yet.\n", cd->cdi.name);
132 if (retries++ < 10) {
133 /* sleep 2 sec and try again */
137 /* 20 secs are enough? */
143 printk(KERN_INFO "%s: CDROM not ready. Make sure there is a disc in the drive.\n", cd->cdi.name);
145 scsi_print_req_sense("sr", SRpnt);
149 case ILLEGAL_REQUEST:
151 if (SRpnt->sr_sense_buffer[12] == 0x20 &&
152 SRpnt->sr_sense_buffer[13] == 0x00)
153 /* sense: Invalid command operation code */
154 err = -EDRIVE_CANT_DO_THIS;
156 __scsi_print_command(cgc->cmd);
157 scsi_print_req_sense("sr", SRpnt);
161 printk(KERN_ERR "%s: CDROM (ioctl) error, command: ", cd->cdi.name);
162 __scsi_print_command(cgc->cmd);
163 scsi_print_req_sense("sr", SRpnt);
169 memcpy(cgc->sense, SRpnt->sr_sense_buffer, sizeof(*cgc->sense));
171 /* Wake up a process waiting for device */
173 scsi_release_request(SRpnt);
180 /* ---------------------------------------------------------------------- */
181 /* interface to cdrom.c */
183 static int test_unit_ready(Scsi_CD *cd)
185 struct packet_command cgc;
187 memset(&cgc, 0, sizeof(struct packet_command));
188 cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
190 cgc.data_direction = DMA_NONE;
191 cgc.timeout = IOCTL_TIMEOUT;
192 return sr_do_ioctl(cd, &cgc);
195 int sr_tray_move(struct cdrom_device_info *cdi, int pos)
197 Scsi_CD *cd = cdi->handle;
198 struct packet_command cgc;
200 memset(&cgc, 0, sizeof(struct packet_command));
201 cgc.cmd[0] = GPCMD_START_STOP_UNIT;
202 cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
203 cgc.data_direction = DMA_NONE;
204 cgc.timeout = IOCTL_TIMEOUT;
205 return sr_do_ioctl(cd, &cgc);
208 int sr_lock_door(struct cdrom_device_info *cdi, int lock)
210 Scsi_CD *cd = cdi->handle;
212 return scsi_set_medium_removal(cd->device, lock ?
213 SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW);
216 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
218 if (CDSL_CURRENT != slot) {
219 /* we have no changer support */
222 if (0 == test_unit_ready(cdi->handle))
225 return CDS_TRAY_OPEN;
228 int sr_disk_status(struct cdrom_device_info *cdi)
230 Scsi_CD *cd = cdi->handle;
231 struct cdrom_tochdr toc_h;
232 struct cdrom_tocentry toc_e;
233 int i, rc, have_datatracks = 0;
235 /* look for data tracks */
236 if (0 != (rc = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &toc_h)))
237 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
239 for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) {
240 toc_e.cdte_track = i;
241 toc_e.cdte_format = CDROM_LBA;
242 if (sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &toc_e))
244 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
249 if (!have_datatracks)
258 int sr_get_last_session(struct cdrom_device_info *cdi,
259 struct cdrom_multisession *ms_info)
261 Scsi_CD *cd = cdi->handle;
263 ms_info->addr.lba = cd->ms_offset;
264 ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0;
269 /* primitive to determine whether we need to have GFP_DMA set based on
270 * the status of the unchecked_isa_dma flag in the host structure */
271 #define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0)
273 int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
275 Scsi_CD *cd = cdi->handle;
276 struct packet_command cgc;
277 char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
280 memset(&cgc, 0, sizeof(struct packet_command));
281 cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
282 cgc.cmd[2] = 0x40; /* I do want the subchannel info */
283 cgc.cmd[3] = 0x02; /* Give me medium catalog number info */
287 cgc.data_direction = DMA_FROM_DEVICE;
288 cgc.timeout = IOCTL_TIMEOUT;
289 result = sr_do_ioctl(cd, &cgc);
291 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
292 mcn->medium_catalog_number[13] = 0;
298 int sr_reset(struct cdrom_device_info *cdi)
303 int sr_select_speed(struct cdrom_device_info *cdi, int speed)
305 Scsi_CD *cd = cdi->handle;
306 struct packet_command cgc;
309 speed = 0xffff; /* set to max */
311 speed *= 177; /* Nx to kbyte/s */
313 memset(&cgc, 0, sizeof(struct packet_command));
314 cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
315 cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
316 cgc.cmd[3] = speed & 0xff; /* LSB */
317 cgc.data_direction = DMA_NONE;
318 cgc.timeout = IOCTL_TIMEOUT;
320 if (sr_do_ioctl(cd, &cgc))
325 /* ----------------------------------------------------------------------- */
326 /* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */
327 /* because the generic cdrom driver does the user access stuff for us. */
328 /* only cdromreadtochdr and cdromreadtocentry are left - for use with the */
329 /* sr_disk_status interface for the generic cdrom driver. */
331 int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
333 Scsi_CD *cd = cdi->handle;
334 struct packet_command cgc;
336 unsigned char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
341 memset(&cgc, 0, sizeof(struct packet_command));
342 cgc.timeout = IOCTL_TIMEOUT;
345 case CDROMREADTOCHDR:
347 struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg;
349 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
350 cgc.cmd[8] = 12; /* LSB of length */
354 cgc.data_direction = DMA_FROM_DEVICE;
356 result = sr_do_ioctl(cd, &cgc);
358 tochdr->cdth_trk0 = buffer[2];
359 tochdr->cdth_trk1 = buffer[3];
364 case CDROMREADTOCENTRY:
366 struct cdrom_tocentry *tocentry = (struct cdrom_tocentry *) arg;
368 cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
369 cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0;
370 cgc.cmd[6] = tocentry->cdte_track;
371 cgc.cmd[8] = 12; /* LSB of length */
374 cgc.data_direction = DMA_FROM_DEVICE;
376 result = sr_do_ioctl(cd, &cgc);
378 tocentry->cdte_ctrl = buffer[5] & 0xf;
379 tocentry->cdte_adr = buffer[5] >> 4;
380 tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
381 if (tocentry->cdte_format == CDROM_MSF) {
382 tocentry->cdte_addr.msf.minute = buffer[9];
383 tocentry->cdte_addr.msf.second = buffer[10];
384 tocentry->cdte_addr.msf.frame = buffer[11];
386 tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8)
387 + buffer[10]) << 8) + buffer[11];
392 case CDROMPLAYTRKIND: {
393 struct cdrom_ti* ti = (struct cdrom_ti*)arg;
395 cgc.cmd[0] = GPCMD_PLAYAUDIO_TI;
396 cgc.cmd[4] = ti->cdti_trk0;
397 cgc.cmd[5] = ti->cdti_ind0;
398 cgc.cmd[7] = ti->cdti_trk1;
399 cgc.cmd[8] = ti->cdti_ind1;
400 cgc.data_direction = DMA_NONE;
402 result = sr_do_ioctl(cd, &cgc);
403 if (result == -EDRIVE_CANT_DO_THIS)
404 result = sr_fake_playtrkind(cdi, ti);
415 printk("DEBUG: sr_audio: result for ioctl %x: %x\n", cmd, result);
422 /* -----------------------------------------------------------------------
423 * a function to read all sorts of funny cdrom sectors using the READ_CD
426 * lba: linear block address
427 * format: 0 = data (anything)
431 * 4 = data (mode 2 form1)
432 * 5 = data (mode 2 form2)
433 * blksize: 2048 | 2336 | 2340 | 2352
436 static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize)
438 struct packet_command cgc;
441 printk("%s: sr_read_cd lba=%d format=%d blksize=%d\n",
442 cd->cdi.name, lba, format, blksize);
445 memset(&cgc, 0, sizeof(struct packet_command));
446 cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */
447 cgc.cmd[1] = ((format & 7) << 2);
448 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
449 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
450 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
451 cgc.cmd[5] = (unsigned char) lba & 0xff;
468 cgc.buflen = blksize;
469 cgc.data_direction = DMA_FROM_DEVICE;
470 cgc.timeout = IOCTL_TIMEOUT;
471 return sr_do_ioctl(cd, &cgc);
475 * read sectors with blocksizes other than 2048
478 static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest)
480 struct packet_command cgc;
483 /* we try the READ CD command first... */
484 if (cd->readcd_known) {
485 rc = sr_read_cd(cd, dest, lba, 0, blksize);
486 if (-EDRIVE_CANT_DO_THIS != rc)
488 cd->readcd_known = 0;
489 printk("CDROM does'nt support READ CD (0xbe) command\n");
490 /* fall & retry the other way */
492 /* ... if this fails, we switch the blocksize using MODE SELECT */
493 if (blksize != cd->device->sector_size) {
494 if (0 != (rc = sr_set_blocklength(cd, blksize)))
498 printk("%s: sr_read_sector lba=%d blksize=%d\n", cd->cdi.name, lba, blksize);
501 memset(&cgc, 0, sizeof(struct packet_command));
502 cgc.cmd[0] = GPCMD_READ_10;
503 cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff;
504 cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff;
505 cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff;
506 cgc.cmd[5] = (unsigned char) lba & 0xff;
509 cgc.buflen = blksize;
510 cgc.data_direction = DMA_FROM_DEVICE;
511 cgc.timeout = IOCTL_TIMEOUT;
512 rc = sr_do_ioctl(cd, &cgc);
518 * read a sector in raw mode to check the sector format
519 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
522 int sr_is_xa(Scsi_CD *cd)
524 unsigned char *raw_sector;
530 raw_sector = (unsigned char *) kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd));
533 if (0 == sr_read_sector(cd, cd->ms_offset + 16,
534 CD_FRAMESIZE_RAW1, raw_sector)) {
535 is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
537 /* read a raw sector failed for some reason. */
542 printk("%s: sr_is_xa: %d\n", cd->cdi.name, is_xa);
547 int sr_dev_ioctl(struct cdrom_device_info *cdi,
548 unsigned int cmd, unsigned long arg)
550 Scsi_CD *cd = cdi->handle;
551 return scsi_ioctl(cd->device, cmd, (void __user *)arg);