1 #include <linux/kernel.h>
2 #include <linux/sched.h>
3 #include <linux/mm.h>
4 #include <linux/fs.h>
5 #include <asm/uaccess.h>
6 #include <linux/errno.h>
7 #include <linux/string.h>
8
9 #include <linux/blk.h>
10 #include <linux/blkpg.h>
11 #include "scsi.h"
12 #include "hosts.h"
13 #include <scsi/scsi_ioctl.h>
14
15 #include <linux/cdrom.h>
16 #include "sr.h"
17
18 #if 0
19 #define DEBUG
20 #endif
21
22 /* The sr_is_xa() seems to trigger firmware bugs with some drives :-(
23 * It is off by default and can be turned on with this module parameter */
24 static int xa_test = 0;
25
26 extern void get_sectorsize(int);
27
28 #define IOCTL_RETRIES 3
29 /* The CDROM is fairly slow, so we need a little extra time */
30 /* In fact, it is very slow if it has to spin up first */
31 #define IOCTL_TIMEOUT 30*HZ
32
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 */
36
sr_fake_playtrkind(struct cdrom_device_info * cdi,struct cdrom_ti * ti)37 static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti)
38 {
39 struct cdrom_tocentry trk0_te, trk1_te;
40 struct cdrom_tochdr tochdr;
41 u_char sr_cmd[10];
42 int ntracks, ret;
43
44 if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &tochdr)))
45 return ret;
46
47 ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1;
48
49 if (ti->cdti_trk1 == ntracks)
50 ti->cdti_trk1 = CDROM_LEADOUT;
51 else if (ti->cdti_trk1 != CDROM_LEADOUT)
52 ti->cdti_trk1 ++;
53
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;
58
59 if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk0_te)))
60 return ret;
61 if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk1_te)))
62 return ret;
63
64 sr_cmd[0] = GPCMD_PLAY_AUDIO_MSF;
65 sr_cmd[3] = trk0_te.cdte_addr.msf.minute;
66 sr_cmd[4] = trk0_te.cdte_addr.msf.second;
67 sr_cmd[5] = trk0_te.cdte_addr.msf.frame;
68 sr_cmd[6] = trk1_te.cdte_addr.msf.minute;
69 sr_cmd[7] = trk1_te.cdte_addr.msf.second;
70 sr_cmd[8] = trk1_te.cdte_addr.msf.frame;
71 return sr_do_ioctl(MINOR(cdi->dev), sr_cmd, NULL, 0, 0, SCSI_DATA_NONE, NULL);
72 }
73
74 /* We do our own retries because we want to know what the specific
75 error code is. Normally the UNIT_ATTENTION code will automatically
76 clear after one error */
77
sr_do_ioctl(int target,unsigned char * sr_cmd,void * buffer,unsigned buflength,int quiet,int readwrite,struct request_sense * sense)78 int sr_do_ioctl(int target, unsigned char *sr_cmd, void *buffer, unsigned buflength, int quiet, int readwrite, struct request_sense *sense)
79 {
80 Scsi_Request *SRpnt;
81 Scsi_Device *SDev;
82 struct request *req;
83 int result, err = 0, retries = 0;
84 char *bounce_buffer;
85
86 SDev = scsi_CDs[target].device;
87 SRpnt = scsi_allocate_request(scsi_CDs[target].device);
88 if (!SRpnt) {
89 printk("Unable to allocate SCSI request in sr_do_ioctl");
90 return -ENOMEM;
91 }
92 SRpnt->sr_data_direction = readwrite;
93
94 /* use ISA DMA buffer if necessary */
95 SRpnt->sr_request.buffer = buffer;
96 if (buffer && SRpnt->sr_host->unchecked_isa_dma &&
97 (virt_to_phys(buffer) + buflength - 1 > ISA_DMA_THRESHOLD)) {
98 bounce_buffer = (char *) scsi_malloc((buflength + 511) & ~511);
99 if (bounce_buffer == NULL) {
100 printk("SCSI DMA pool exhausted.");
101 return -ENOMEM;
102 }
103 memcpy(bounce_buffer, (char *) buffer, buflength);
104 buffer = bounce_buffer;
105 }
106 retry:
107 if (!scsi_block_when_processing_errors(SDev))
108 return -ENODEV;
109
110
111 scsi_wait_req(SRpnt, (void *) sr_cmd, (void *) buffer, buflength,
112 IOCTL_TIMEOUT, IOCTL_RETRIES);
113
114 req = &SRpnt->sr_request;
115 if (SRpnt->sr_buffer && req->buffer && SRpnt->sr_buffer != req->buffer) {
116 memcpy(req->buffer, SRpnt->sr_buffer, SRpnt->sr_bufflen);
117 scsi_free(SRpnt->sr_buffer, (SRpnt->sr_bufflen + 511) & ~511);
118 SRpnt->sr_buffer = req->buffer;
119 }
120
121 result = SRpnt->sr_result;
122
123 /* Minimal error checking. Ignore cases we know about, and report the rest. */
124 if (driver_byte(result) != 0) {
125 switch (SRpnt->sr_sense_buffer[2] & 0xf) {
126 case UNIT_ATTENTION:
127 scsi_CDs[target].device->changed = 1;
128 if (!quiet)
129 printk(KERN_INFO "sr%d: disc change detected.\n", target);
130 if (retries++ < 10)
131 goto retry;
132 err = -ENOMEDIUM;
133 break;
134 case NOT_READY: /* This happens if there is no disc in drive */
135 if (SRpnt->sr_sense_buffer[12] == 0x04 &&
136 SRpnt->sr_sense_buffer[13] == 0x01) {
137 /* sense: Logical unit is in process of becoming ready */
138 if (!quiet)
139 printk(KERN_INFO "sr%d: CDROM not ready yet.\n", target);
140 if (retries++ < 10) {
141 /* sleep 2 sec and try again */
142 scsi_sleep(2 * HZ);
143 goto retry;
144 } else {
145 /* 20 secs are enough? */
146 err = -ENOMEDIUM;
147 break;
148 }
149 }
150 if (!quiet)
151 printk(KERN_INFO "sr%d: CDROM not ready. Make sure there is a disc in the drive.\n", target);
152 #ifdef DEBUG
153 print_req_sense("sr", SRpnt);
154 #endif
155 err = -ENOMEDIUM;
156 break;
157 case ILLEGAL_REQUEST:
158 if (!quiet)
159 printk(KERN_ERR "sr%d: CDROM (ioctl) reports ILLEGAL "
160 "REQUEST.\n", target);
161 err = -EIO;
162 if (SRpnt->sr_sense_buffer[12] == 0x20 &&
163 SRpnt->sr_sense_buffer[13] == 0x00)
164 /* sense: Invalid command operation code */
165 err = -EDRIVE_CANT_DO_THIS;
166 #ifdef DEBUG
167 print_command(sr_cmd);
168 print_req_sense("sr", SRpnt);
169 #endif
170 break;
171 default:
172 printk(KERN_ERR "sr%d: CDROM (ioctl) error, command: ", target);
173 print_command(sr_cmd);
174 print_req_sense("sr", SRpnt);
175 err = -EIO;
176 }
177 }
178
179 if (sense)
180 memcpy(sense, SRpnt->sr_sense_buffer, sizeof(*sense));
181
182 /* Wake up a process waiting for device */
183 scsi_release_request(SRpnt);
184 SRpnt = NULL;
185 return err;
186 }
187
188 /* ---------------------------------------------------------------------- */
189 /* interface to cdrom.c */
190
test_unit_ready(int minor)191 static int test_unit_ready(int minor)
192 {
193 u_char sr_cmd[10];
194
195 sr_cmd[0] = GPCMD_TEST_UNIT_READY;
196 sr_cmd[1] = (scsi_CDs[minor].device->scsi_level <= SCSI_2) ?
197 ((scsi_CDs[minor].device->lun) << 5) : 0;
198 sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = sr_cmd[5] = 0;
199 return sr_do_ioctl(minor, sr_cmd, NULL, 0, 1, SCSI_DATA_NONE, NULL);
200 }
201
sr_tray_move(struct cdrom_device_info * cdi,int pos)202 int sr_tray_move(struct cdrom_device_info *cdi, int pos)
203 {
204 u_char sr_cmd[10];
205
206 sr_cmd[0] = GPCMD_START_STOP_UNIT;
207 sr_cmd[1] = (scsi_CDs[MINOR(cdi->dev)].device->scsi_level <= SCSI_2) ?
208 ((scsi_CDs[MINOR(cdi->dev)].device->lun) << 5) : 0;
209 sr_cmd[2] = sr_cmd[3] = sr_cmd[5] = 0;
210 sr_cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ;
211
212 return sr_do_ioctl(MINOR(cdi->dev), sr_cmd, NULL, 0, 0, SCSI_DATA_NONE, NULL);
213 }
214
sr_lock_door(struct cdrom_device_info * cdi,int lock)215 int sr_lock_door(struct cdrom_device_info *cdi, int lock)
216 {
217 return scsi_ioctl(scsi_CDs[MINOR(cdi->dev)].device,
218 lock ? SCSI_IOCTL_DOORLOCK : SCSI_IOCTL_DOORUNLOCK,
219 0);
220 }
221
sr_drive_status(struct cdrom_device_info * cdi,int slot)222 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
223 {
224 if (CDSL_CURRENT != slot) {
225 /* we have no changer support */
226 return -EINVAL;
227 }
228 if (0 == test_unit_ready(MINOR(cdi->dev)))
229 return CDS_DISC_OK;
230
231 return CDS_TRAY_OPEN;
232 }
233
sr_disk_status(struct cdrom_device_info * cdi)234 int sr_disk_status(struct cdrom_device_info *cdi)
235 {
236 struct cdrom_tochdr toc_h;
237 struct cdrom_tocentry toc_e;
238 int i, rc, have_datatracks = 0;
239
240 /* look for data tracks */
241 if (0 != (rc = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &toc_h)))
242 return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO;
243
244 for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) {
245 toc_e.cdte_track = i;
246 toc_e.cdte_format = CDROM_LBA;
247 if (sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &toc_e))
248 return CDS_NO_INFO;
249 if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) {
250 have_datatracks = 1;
251 break;
252 }
253 }
254 if (!have_datatracks)
255 return CDS_AUDIO;
256
257 if (scsi_CDs[MINOR(cdi->dev)].xa_flag)
258 return CDS_XA_2_1;
259 else
260 return CDS_DATA_1;
261 }
262
sr_get_last_session(struct cdrom_device_info * cdi,struct cdrom_multisession * ms_info)263 int sr_get_last_session(struct cdrom_device_info *cdi,
264 struct cdrom_multisession *ms_info)
265 {
266 ms_info->addr.lba = scsi_CDs[MINOR(cdi->dev)].ms_offset;
267 ms_info->xa_flag = scsi_CDs[MINOR(cdi->dev)].xa_flag ||
268 (scsi_CDs[MINOR(cdi->dev)].ms_offset > 0);
269
270 return 0;
271 }
272
sr_get_mcn(struct cdrom_device_info * cdi,struct cdrom_mcn * mcn)273 int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
274 {
275 u_char sr_cmd[10];
276 char buffer[32];
277 int result;
278
279 sr_cmd[0] = GPCMD_READ_SUBCHANNEL;
280 sr_cmd[1] = (scsi_CDs[MINOR(cdi->dev)].device->scsi_level <= SCSI_2) ?
281 ((scsi_CDs[MINOR(cdi->dev)].device->lun) << 5) : 0;
282 sr_cmd[2] = 0x40; /* I do want the subchannel info */
283 sr_cmd[3] = 0x02; /* Give me medium catalog number info */
284 sr_cmd[4] = sr_cmd[5] = 0;
285 sr_cmd[6] = 0;
286 sr_cmd[7] = 0;
287 sr_cmd[8] = 24;
288 sr_cmd[9] = 0;
289
290 result = sr_do_ioctl(MINOR(cdi->dev), sr_cmd, buffer, 24, 0, SCSI_DATA_READ, NULL);
291
292 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
293 mcn->medium_catalog_number[13] = 0;
294
295 return result;
296 }
297
sr_reset(struct cdrom_device_info * cdi)298 int sr_reset(struct cdrom_device_info *cdi)
299 {
300 invalidate_buffers(cdi->dev);
301 return 0;
302 }
303
sr_select_speed(struct cdrom_device_info * cdi,int speed)304 int sr_select_speed(struct cdrom_device_info *cdi, int speed)
305 {
306 u_char sr_cmd[MAX_COMMAND_SIZE];
307
308 if (speed == 0)
309 speed = 0xffff; /* set to max */
310 else
311 speed *= 177; /* Nx to kbyte/s */
312
313 memset(sr_cmd, 0, MAX_COMMAND_SIZE);
314 sr_cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */
315 sr_cmd[1] = (scsi_CDs[MINOR(cdi->dev)].device->scsi_level <= SCSI_2) ?
316 ((scsi_CDs[MINOR(cdi->dev)].device->lun) << 5) : 0;
317 sr_cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */
318 sr_cmd[3] = speed & 0xff; /* LSB */
319
320 if (sr_do_ioctl(MINOR(cdi->dev), sr_cmd, NULL, 0, 0, SCSI_DATA_NONE, NULL))
321 return -EIO;
322 return 0;
323 }
324
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. */
330
sr_audio_ioctl(struct cdrom_device_info * cdi,unsigned int cmd,void * arg)331 int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
332 {
333 u_char sr_cmd[10];
334 int result, target = MINOR(cdi->dev);
335 unsigned char buffer[32];
336
337 memset(sr_cmd, 0, sizeof(sr_cmd));
338
339 switch (cmd) {
340 case CDROMREADTOCHDR:
341 {
342 struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg;
343
344 sr_cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
345 sr_cmd[1] = (scsi_CDs[target].device->scsi_level <= SCSI_2) ?
346 ((scsi_CDs[target].device->lun) << 5) : 0;
347 sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = sr_cmd[5] = 0;
348 sr_cmd[8] = 12; /* LSB of length */
349
350 result = sr_do_ioctl(target, sr_cmd, buffer, 12, 1, SCSI_DATA_READ, NULL);
351
352 tochdr->cdth_trk0 = buffer[2];
353 tochdr->cdth_trk1 = buffer[3];
354
355 break;
356 }
357
358 case CDROMREADTOCENTRY:
359 {
360 struct cdrom_tocentry *tocentry = (struct cdrom_tocentry *) arg;
361
362 sr_cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
363 sr_cmd[1] = (scsi_CDs[target].device->scsi_level <= SCSI_2) ?
364 ((scsi_CDs[target].device->lun) << 5) : 0;
365 sr_cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0;
366 sr_cmd[2] = sr_cmd[3] = sr_cmd[4] = sr_cmd[5] = 0;
367 sr_cmd[6] = tocentry->cdte_track;
368 sr_cmd[8] = 12; /* LSB of length */
369
370 result = sr_do_ioctl(target, sr_cmd, buffer, 12, 0, SCSI_DATA_READ, NULL);
371
372 tocentry->cdte_ctrl = buffer[5] & 0xf;
373 tocentry->cdte_adr = buffer[5] >> 4;
374 tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
375 if (tocentry->cdte_format == CDROM_MSF) {
376 tocentry->cdte_addr.msf.minute = buffer[9];
377 tocentry->cdte_addr.msf.second = buffer[10];
378 tocentry->cdte_addr.msf.frame = buffer[11];
379 } else
380 tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8)
381 + buffer[10]) << 8) + buffer[11];
382
383 break;
384 }
385
386 case CDROMPLAYTRKIND: {
387 struct cdrom_ti* ti = (struct cdrom_ti*)arg;
388
389 sr_cmd[0] = GPCMD_PLAYAUDIO_TI;
390 sr_cmd[1] = (scsi_CDs[target].device->scsi_level <= SCSI_2) ?
391 (scsi_CDs[target].device->lun << 5) : 0;
392 sr_cmd[4] = ti->cdti_trk0;
393 sr_cmd[5] = ti->cdti_ind0;
394 sr_cmd[7] = ti->cdti_trk1;
395 sr_cmd[8] = ti->cdti_ind1;
396
397 result = sr_do_ioctl(target, sr_cmd, NULL, 0, 0, SCSI_DATA_NONE, NULL);
398 if (result == -EDRIVE_CANT_DO_THIS)
399 result = sr_fake_playtrkind(cdi, ti);
400
401 break;
402 }
403
404 default:
405 return -EINVAL;
406 }
407
408 #if 0
409 if (result)
410 printk("DEBUG: sr_audio: result for ioctl %x: %x\n", cmd, result);
411 #endif
412
413 return result;
414 }
415
416 /* -----------------------------------------------------------------------
417 * a function to read all sorts of funny cdrom sectors using the READ_CD
418 * scsi-3 mmc command
419 *
420 * lba: linear block address
421 * format: 0 = data (anything)
422 * 1 = audio
423 * 2 = data (mode 1)
424 * 3 = data (mode 2)
425 * 4 = data (mode 2 form1)
426 * 5 = data (mode 2 form2)
427 * blksize: 2048 | 2336 | 2340 | 2352
428 */
429
sr_read_cd(int minor,unsigned char * dest,int lba,int format,int blksize)430 int sr_read_cd(int minor, unsigned char *dest, int lba, int format, int blksize)
431 {
432 unsigned char cmd[MAX_COMMAND_SIZE];
433
434 #ifdef DEBUG
435 printk("sr%d: sr_read_cd lba=%d format=%d blksize=%d\n",
436 minor, lba, format, blksize);
437 #endif
438
439 memset(cmd, 0, MAX_COMMAND_SIZE);
440 cmd[0] = GPCMD_READ_CD; /* READ_CD */
441 cmd[1] = (scsi_CDs[minor].device->scsi_level <= SCSI_2) ?
442 (scsi_CDs[minor].device->lun << 5) : 0;
443 cmd[1] |= ((format & 7) << 2);
444 cmd[2] = (unsigned char) (lba >> 24) & 0xff;
445 cmd[3] = (unsigned char) (lba >> 16) & 0xff;
446 cmd[4] = (unsigned char) (lba >> 8) & 0xff;
447 cmd[5] = (unsigned char) lba & 0xff;
448 cmd[8] = 1;
449 switch (blksize) {
450 case 2336:
451 cmd[9] = 0x58;
452 break;
453 case 2340:
454 cmd[9] = 0x78;
455 break;
456 case 2352:
457 cmd[9] = 0xf8;
458 break;
459 default:
460 cmd[9] = 0x10;
461 break;
462 }
463 return sr_do_ioctl(minor, cmd, dest, blksize, 0, SCSI_DATA_READ, NULL);
464 }
465
466 /*
467 * read sectors with blocksizes other than 2048
468 */
469
sr_read_sector(int minor,int lba,int blksize,unsigned char * dest)470 int sr_read_sector(int minor, int lba, int blksize, unsigned char *dest)
471 {
472 unsigned char cmd[MAX_COMMAND_SIZE]; /* the scsi-command */
473 int rc;
474
475 /* we try the READ CD command first... */
476 if (scsi_CDs[minor].readcd_known) {
477 rc = sr_read_cd(minor, dest, lba, 0, blksize);
478 if (-EDRIVE_CANT_DO_THIS != rc)
479 return rc;
480 scsi_CDs[minor].readcd_known = 0;
481 printk("CDROM does'nt support READ CD (0xbe) command\n");
482 /* fall & retry the other way */
483 }
484 /* ... if this fails, we switch the blocksize using MODE SELECT */
485 if (blksize != scsi_CDs[minor].device->sector_size) {
486 if (0 != (rc = sr_set_blocklength(minor, blksize)))
487 return rc;
488 }
489 #ifdef DEBUG
490 printk("sr%d: sr_read_sector lba=%d blksize=%d\n", minor, lba, blksize);
491 #endif
492
493 memset(cmd, 0, MAX_COMMAND_SIZE);
494 cmd[0] = GPCMD_READ_10;
495 cmd[1] = (scsi_CDs[minor].device->scsi_level <= SCSI_2) ?
496 (scsi_CDs[minor].device->lun << 5) : 0;
497 cmd[2] = (unsigned char) (lba >> 24) & 0xff;
498 cmd[3] = (unsigned char) (lba >> 16) & 0xff;
499 cmd[4] = (unsigned char) (lba >> 8) & 0xff;
500 cmd[5] = (unsigned char) lba & 0xff;
501 cmd[8] = 1;
502 rc = sr_do_ioctl(minor, cmd, dest, blksize, 0, SCSI_DATA_READ, NULL);
503
504 return rc;
505 }
506
507 /*
508 * read a sector in raw mode to check the sector format
509 * ret: 1 == mode2 (XA), 0 == mode1, <0 == error
510 */
511
sr_is_xa(int minor)512 int sr_is_xa(int minor)
513 {
514 unsigned char *raw_sector;
515 int is_xa;
516
517 if (!xa_test)
518 return 0;
519
520 raw_sector = (unsigned char *) scsi_malloc(2048 + 512);
521 if (!raw_sector)
522 return -ENOMEM;
523 if (0 == sr_read_sector(minor, scsi_CDs[minor].ms_offset + 16,
524 CD_FRAMESIZE_RAW1, raw_sector)) {
525 is_xa = (raw_sector[3] == 0x02) ? 1 : 0;
526 } else {
527 /* read a raw sector failed for some reason. */
528 is_xa = -1;
529 }
530 scsi_free(raw_sector, 2048 + 512);
531 #ifdef DEBUG
532 printk("sr%d: sr_is_xa: %d\n", minor, is_xa);
533 #endif
534 return is_xa;
535 }
536
sr_dev_ioctl(struct cdrom_device_info * cdi,unsigned int cmd,unsigned long arg)537 int sr_dev_ioctl(struct cdrom_device_info *cdi,
538 unsigned int cmd, unsigned long arg)
539 {
540 int target;
541
542 target = MINOR(cdi->dev);
543
544 switch (cmd) {
545 case BLKGETSIZE:
546 return put_user(scsi_CDs[target].capacity, (unsigned long *) arg);
547 case BLKGETSIZE64:
548 return put_user((u64)scsi_CDs[target].capacity << 9, (u64 *)arg);
549 case BLKROSET:
550 case BLKROGET:
551 case BLKRASET:
552 case BLKRAGET:
553 case BLKFLSBUF:
554 case BLKSSZGET:
555 return blk_ioctl(cdi->dev, cmd, arg);
556
557 default:
558 return scsi_ioctl(scsi_CDs[target].device, cmd, (void *) arg);
559 }
560 }
561
562 /*
563 * Overrides for Emacs so that we follow Linus's tabbing style.
564 * Emacs will notice this stuff at the end of the file and automatically
565 * adjust the settings for this buffer only. This must remain at the end
566 * of the file.
567 * ---------------------------------------------------------------------------
568 * Local variables:
569 * c-indent-level: 4
570 * c-brace-imaginary-offset: 0
571 * c-brace-offset: -4
572 * c-argdecl-indent: 4
573 * c-label-offset: -4
574 * c-continued-statement-offset: 4
575 * c-continued-brace-offset: 0
576 * indent-tabs-mode: nil
577 * tab-width: 8
578 * End:
579 */
580