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1da177e4 LT |
1 | #include <linux/kernel.h> |
2 | #include <linux/sched.h> | |
3 | #include <linux/mm.h> | |
4 | #include <linux/fs.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> | |
10 | #include <linux/delay.h> | |
11 | #include <asm/io.h> | |
12 | #include <asm/uaccess.h> | |
13 | ||
14 | #include <scsi/scsi.h> | |
15 | #include <scsi/scsi_dbg.h> | |
16 | #include <scsi/scsi_device.h> | |
17 | #include <scsi/scsi_eh.h> | |
18 | #include <scsi/scsi_host.h> | |
19 | #include <scsi/scsi_ioctl.h> | |
20 | #include <scsi/scsi_request.h> | |
21 | ||
22 | #include "sr.h" | |
23 | ||
24 | #if 0 | |
25 | #define DEBUG | |
26 | #endif | |
27 | ||
28 | /* The sr_is_xa() seems to trigger firmware bugs with some drives :-( | |
29 | * It is off by default and can be turned on with this module parameter */ | |
30 | static int xa_test = 0; | |
31 | ||
32 | module_param(xa_test, int, S_IRUGO | S_IWUSR); | |
33 | ||
34 | ||
35 | #define IOCTL_RETRIES 3 | |
36 | ||
37 | /* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives | |
38 | are emulating a SCSI device via the idescsi module, they need to have | |
39 | CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */ | |
40 | ||
41 | static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti) | |
42 | { | |
43 | struct cdrom_tocentry trk0_te, trk1_te; | |
44 | struct cdrom_tochdr tochdr; | |
45 | struct packet_command cgc; | |
46 | int ntracks, ret; | |
47 | ||
48 | if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &tochdr))) | |
49 | return ret; | |
50 | ||
51 | ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1; | |
52 | ||
53 | if (ti->cdti_trk1 == ntracks) | |
54 | ti->cdti_trk1 = CDROM_LEADOUT; | |
55 | else if (ti->cdti_trk1 != CDROM_LEADOUT) | |
56 | ti->cdti_trk1 ++; | |
57 | ||
58 | trk0_te.cdte_track = ti->cdti_trk0; | |
59 | trk0_te.cdte_format = CDROM_MSF; | |
60 | trk1_te.cdte_track = ti->cdti_trk1; | |
61 | trk1_te.cdte_format = CDROM_MSF; | |
62 | ||
63 | if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk0_te))) | |
64 | return ret; | |
65 | if ((ret = sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &trk1_te))) | |
66 | return ret; | |
67 | ||
68 | memset(&cgc, 0, sizeof(struct packet_command)); | |
69 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
70 | cgc.cmd[3] = trk0_te.cdte_addr.msf.minute; | |
71 | cgc.cmd[4] = trk0_te.cdte_addr.msf.second; | |
72 | cgc.cmd[5] = trk0_te.cdte_addr.msf.frame; | |
73 | cgc.cmd[6] = trk1_te.cdte_addr.msf.minute; | |
74 | cgc.cmd[7] = trk1_te.cdte_addr.msf.second; | |
75 | cgc.cmd[8] = trk1_te.cdte_addr.msf.frame; | |
76 | cgc.data_direction = DMA_NONE; | |
77 | cgc.timeout = IOCTL_TIMEOUT; | |
78 | return sr_do_ioctl(cdi->handle, &cgc); | |
79 | } | |
80 | ||
81 | /* We do our own retries because we want to know what the specific | |
82 | error code is. Normally the UNIT_ATTENTION code will automatically | |
83 | clear after one error */ | |
84 | ||
85 | int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) | |
86 | { | |
87 | struct scsi_request *SRpnt; | |
88 | struct scsi_device *SDev; | |
89 | struct request *req; | |
90 | int result, err = 0, retries = 0; | |
91 | ||
92 | SDev = cd->device; | |
93 | SRpnt = scsi_allocate_request(SDev, GFP_KERNEL); | |
94 | if (!SRpnt) { | |
95 | printk(KERN_ERR "Unable to allocate SCSI request in sr_do_ioctl"); | |
96 | err = -ENOMEM; | |
97 | goto out; | |
98 | } | |
99 | SRpnt->sr_data_direction = cgc->data_direction; | |
100 | ||
101 | retry: | |
102 | if (!scsi_block_when_processing_errors(SDev)) { | |
103 | err = -ENODEV; | |
104 | goto out_free; | |
105 | } | |
106 | ||
107 | scsi_wait_req(SRpnt, cgc->cmd, cgc->buffer, cgc->buflen, | |
108 | cgc->timeout, IOCTL_RETRIES); | |
109 | ||
110 | req = SRpnt->sr_request; | |
111 | if (SRpnt->sr_buffer && req->buffer && SRpnt->sr_buffer != req->buffer) { | |
112 | memcpy(req->buffer, SRpnt->sr_buffer, SRpnt->sr_bufflen); | |
113 | kfree(SRpnt->sr_buffer); | |
114 | SRpnt->sr_buffer = req->buffer; | |
115 | } | |
116 | ||
117 | result = SRpnt->sr_result; | |
118 | ||
119 | /* Minimal error checking. Ignore cases we know about, and report the rest. */ | |
120 | if (driver_byte(result) != 0) { | |
121 | switch (SRpnt->sr_sense_buffer[2] & 0xf) { | |
122 | case UNIT_ATTENTION: | |
123 | SDev->changed = 1; | |
124 | if (!cgc->quiet) | |
125 | printk(KERN_INFO "%s: disc change detected.\n", cd->cdi.name); | |
126 | if (retries++ < 10) | |
127 | goto retry; | |
128 | err = -ENOMEDIUM; | |
129 | break; | |
130 | case NOT_READY: /* This happens if there is no disc in drive */ | |
131 | if (SRpnt->sr_sense_buffer[12] == 0x04 && | |
132 | SRpnt->sr_sense_buffer[13] == 0x01) { | |
133 | /* sense: Logical unit is in process of becoming ready */ | |
134 | if (!cgc->quiet) | |
135 | printk(KERN_INFO "%s: CDROM not ready yet.\n", cd->cdi.name); | |
136 | if (retries++ < 10) { | |
137 | /* sleep 2 sec and try again */ | |
138 | ssleep(2); | |
139 | goto retry; | |
140 | } else { | |
141 | /* 20 secs are enough? */ | |
142 | err = -ENOMEDIUM; | |
143 | break; | |
144 | } | |
145 | } | |
146 | if (!cgc->quiet) | |
147 | printk(KERN_INFO "%s: CDROM not ready. Make sure there is a disc in the drive.\n", cd->cdi.name); | |
148 | #ifdef DEBUG | |
149 | scsi_print_req_sense("sr", SRpnt); | |
150 | #endif | |
151 | err = -ENOMEDIUM; | |
152 | break; | |
153 | case ILLEGAL_REQUEST: | |
154 | err = -EIO; | |
155 | if (SRpnt->sr_sense_buffer[12] == 0x20 && | |
156 | SRpnt->sr_sense_buffer[13] == 0x00) | |
157 | /* sense: Invalid command operation code */ | |
158 | err = -EDRIVE_CANT_DO_THIS; | |
159 | #ifdef DEBUG | |
160 | __scsi_print_command(cgc->cmd); | |
161 | scsi_print_req_sense("sr", SRpnt); | |
162 | #endif | |
163 | break; | |
164 | default: | |
165 | printk(KERN_ERR "%s: CDROM (ioctl) error, command: ", cd->cdi.name); | |
166 | __scsi_print_command(cgc->cmd); | |
167 | scsi_print_req_sense("sr", SRpnt); | |
168 | err = -EIO; | |
169 | } | |
170 | } | |
171 | ||
172 | if (cgc->sense) | |
173 | memcpy(cgc->sense, SRpnt->sr_sense_buffer, sizeof(*cgc->sense)); | |
174 | ||
175 | /* Wake up a process waiting for device */ | |
176 | out_free: | |
177 | scsi_release_request(SRpnt); | |
178 | SRpnt = NULL; | |
179 | out: | |
180 | cgc->stat = err; | |
181 | return err; | |
182 | } | |
183 | ||
184 | /* ---------------------------------------------------------------------- */ | |
185 | /* interface to cdrom.c */ | |
186 | ||
187 | static int test_unit_ready(Scsi_CD *cd) | |
188 | { | |
189 | struct packet_command cgc; | |
190 | ||
191 | memset(&cgc, 0, sizeof(struct packet_command)); | |
192 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; | |
193 | cgc.quiet = 1; | |
194 | cgc.data_direction = DMA_NONE; | |
195 | cgc.timeout = IOCTL_TIMEOUT; | |
196 | return sr_do_ioctl(cd, &cgc); | |
197 | } | |
198 | ||
199 | int sr_tray_move(struct cdrom_device_info *cdi, int pos) | |
200 | { | |
201 | Scsi_CD *cd = cdi->handle; | |
202 | struct packet_command cgc; | |
203 | ||
204 | memset(&cgc, 0, sizeof(struct packet_command)); | |
205 | cgc.cmd[0] = GPCMD_START_STOP_UNIT; | |
206 | cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ; | |
207 | cgc.data_direction = DMA_NONE; | |
208 | cgc.timeout = IOCTL_TIMEOUT; | |
209 | return sr_do_ioctl(cd, &cgc); | |
210 | } | |
211 | ||
212 | int sr_lock_door(struct cdrom_device_info *cdi, int lock) | |
213 | { | |
214 | Scsi_CD *cd = cdi->handle; | |
215 | ||
216 | return scsi_set_medium_removal(cd->device, lock ? | |
217 | SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW); | |
218 | } | |
219 | ||
220 | int sr_drive_status(struct cdrom_device_info *cdi, int slot) | |
221 | { | |
222 | if (CDSL_CURRENT != slot) { | |
223 | /* we have no changer support */ | |
224 | return -EINVAL; | |
225 | } | |
226 | if (0 == test_unit_ready(cdi->handle)) | |
227 | return CDS_DISC_OK; | |
228 | ||
229 | return CDS_TRAY_OPEN; | |
230 | } | |
231 | ||
232 | int sr_disk_status(struct cdrom_device_info *cdi) | |
233 | { | |
234 | Scsi_CD *cd = cdi->handle; | |
235 | struct cdrom_tochdr toc_h; | |
236 | struct cdrom_tocentry toc_e; | |
237 | int i, rc, have_datatracks = 0; | |
238 | ||
239 | /* look for data tracks */ | |
240 | if (0 != (rc = sr_audio_ioctl(cdi, CDROMREADTOCHDR, &toc_h))) | |
241 | return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO; | |
242 | ||
243 | for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) { | |
244 | toc_e.cdte_track = i; | |
245 | toc_e.cdte_format = CDROM_LBA; | |
246 | if (sr_audio_ioctl(cdi, CDROMREADTOCENTRY, &toc_e)) | |
247 | return CDS_NO_INFO; | |
248 | if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) { | |
249 | have_datatracks = 1; | |
250 | break; | |
251 | } | |
252 | } | |
253 | if (!have_datatracks) | |
254 | return CDS_AUDIO; | |
255 | ||
256 | if (cd->xa_flag) | |
257 | return CDS_XA_2_1; | |
258 | else | |
259 | return CDS_DATA_1; | |
260 | } | |
261 | ||
262 | int sr_get_last_session(struct cdrom_device_info *cdi, | |
263 | struct cdrom_multisession *ms_info) | |
264 | { | |
265 | Scsi_CD *cd = cdi->handle; | |
266 | ||
267 | ms_info->addr.lba = cd->ms_offset; | |
268 | ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0; | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
273 | /* primitive to determine whether we need to have GFP_DMA set based on | |
274 | * the status of the unchecked_isa_dma flag in the host structure */ | |
275 | #define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0) | |
276 | ||
277 | int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn) | |
278 | { | |
279 | Scsi_CD *cd = cdi->handle; | |
280 | struct packet_command cgc; | |
281 | char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
282 | int result; | |
283 | ||
284 | memset(&cgc, 0, sizeof(struct packet_command)); | |
285 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
286 | cgc.cmd[2] = 0x40; /* I do want the subchannel info */ | |
287 | cgc.cmd[3] = 0x02; /* Give me medium catalog number info */ | |
288 | cgc.cmd[8] = 24; | |
289 | cgc.buffer = buffer; | |
290 | cgc.buflen = 24; | |
291 | cgc.data_direction = DMA_FROM_DEVICE; | |
292 | cgc.timeout = IOCTL_TIMEOUT; | |
293 | result = sr_do_ioctl(cd, &cgc); | |
294 | ||
295 | memcpy(mcn->medium_catalog_number, buffer + 9, 13); | |
296 | mcn->medium_catalog_number[13] = 0; | |
297 | ||
298 | kfree(buffer); | |
299 | return result; | |
300 | } | |
301 | ||
302 | int sr_reset(struct cdrom_device_info *cdi) | |
303 | { | |
304 | return 0; | |
305 | } | |
306 | ||
307 | int sr_select_speed(struct cdrom_device_info *cdi, int speed) | |
308 | { | |
309 | Scsi_CD *cd = cdi->handle; | |
310 | struct packet_command cgc; | |
311 | ||
312 | if (speed == 0) | |
313 | speed = 0xffff; /* set to max */ | |
314 | else | |
315 | speed *= 177; /* Nx to kbyte/s */ | |
316 | ||
317 | memset(&cgc, 0, sizeof(struct packet_command)); | |
318 | cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */ | |
319 | cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */ | |
320 | cgc.cmd[3] = speed & 0xff; /* LSB */ | |
321 | cgc.data_direction = DMA_NONE; | |
322 | cgc.timeout = IOCTL_TIMEOUT; | |
323 | ||
324 | if (sr_do_ioctl(cd, &cgc)) | |
325 | return -EIO; | |
326 | return 0; | |
327 | } | |
328 | ||
329 | /* ----------------------------------------------------------------------- */ | |
330 | /* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */ | |
331 | /* because the generic cdrom driver does the user access stuff for us. */ | |
332 | /* only cdromreadtochdr and cdromreadtocentry are left - for use with the */ | |
333 | /* sr_disk_status interface for the generic cdrom driver. */ | |
334 | ||
335 | int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg) | |
336 | { | |
337 | Scsi_CD *cd = cdi->handle; | |
338 | struct packet_command cgc; | |
339 | int result; | |
340 | unsigned char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
341 | ||
342 | if (!buffer) | |
343 | return -ENOMEM; | |
344 | ||
345 | memset(&cgc, 0, sizeof(struct packet_command)); | |
346 | cgc.timeout = IOCTL_TIMEOUT; | |
347 | ||
348 | switch (cmd) { | |
349 | case CDROMREADTOCHDR: | |
350 | { | |
351 | struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg; | |
352 | ||
353 | cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; | |
354 | cgc.cmd[8] = 12; /* LSB of length */ | |
355 | cgc.buffer = buffer; | |
356 | cgc.buflen = 12; | |
357 | cgc.quiet = 1; | |
358 | cgc.data_direction = DMA_FROM_DEVICE; | |
359 | ||
360 | result = sr_do_ioctl(cd, &cgc); | |
361 | ||
362 | tochdr->cdth_trk0 = buffer[2]; | |
363 | tochdr->cdth_trk1 = buffer[3]; | |
364 | ||
365 | break; | |
366 | } | |
367 | ||
368 | case CDROMREADTOCENTRY: | |
369 | { | |
370 | struct cdrom_tocentry *tocentry = (struct cdrom_tocentry *) arg; | |
371 | ||
372 | cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; | |
373 | cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0; | |
374 | cgc.cmd[6] = tocentry->cdte_track; | |
375 | cgc.cmd[8] = 12; /* LSB of length */ | |
376 | cgc.buffer = buffer; | |
377 | cgc.buflen = 12; | |
378 | cgc.data_direction = DMA_FROM_DEVICE; | |
379 | ||
380 | result = sr_do_ioctl(cd, &cgc); | |
381 | ||
382 | tocentry->cdte_ctrl = buffer[5] & 0xf; | |
383 | tocentry->cdte_adr = buffer[5] >> 4; | |
384 | tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0; | |
385 | if (tocentry->cdte_format == CDROM_MSF) { | |
386 | tocentry->cdte_addr.msf.minute = buffer[9]; | |
387 | tocentry->cdte_addr.msf.second = buffer[10]; | |
388 | tocentry->cdte_addr.msf.frame = buffer[11]; | |
389 | } else | |
390 | tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8) | |
391 | + buffer[10]) << 8) + buffer[11]; | |
392 | ||
393 | break; | |
394 | } | |
395 | ||
396 | case CDROMPLAYTRKIND: { | |
397 | struct cdrom_ti* ti = (struct cdrom_ti*)arg; | |
398 | ||
399 | cgc.cmd[0] = GPCMD_PLAYAUDIO_TI; | |
400 | cgc.cmd[4] = ti->cdti_trk0; | |
401 | cgc.cmd[5] = ti->cdti_ind0; | |
402 | cgc.cmd[7] = ti->cdti_trk1; | |
403 | cgc.cmd[8] = ti->cdti_ind1; | |
404 | cgc.data_direction = DMA_NONE; | |
405 | ||
406 | result = sr_do_ioctl(cd, &cgc); | |
407 | if (result == -EDRIVE_CANT_DO_THIS) | |
408 | result = sr_fake_playtrkind(cdi, ti); | |
409 | ||
410 | break; | |
411 | } | |
412 | ||
413 | default: | |
414 | result = -EINVAL; | |
415 | } | |
416 | ||
417 | #if 0 | |
418 | if (result) | |
419 | printk("DEBUG: sr_audio: result for ioctl %x: %x\n", cmd, result); | |
420 | #endif | |
421 | ||
422 | kfree(buffer); | |
423 | return result; | |
424 | } | |
425 | ||
426 | /* ----------------------------------------------------------------------- | |
427 | * a function to read all sorts of funny cdrom sectors using the READ_CD | |
428 | * scsi-3 mmc command | |
429 | * | |
430 | * lba: linear block address | |
431 | * format: 0 = data (anything) | |
432 | * 1 = audio | |
433 | * 2 = data (mode 1) | |
434 | * 3 = data (mode 2) | |
435 | * 4 = data (mode 2 form1) | |
436 | * 5 = data (mode 2 form2) | |
437 | * blksize: 2048 | 2336 | 2340 | 2352 | |
438 | */ | |
439 | ||
440 | static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize) | |
441 | { | |
442 | struct packet_command cgc; | |
443 | ||
444 | #ifdef DEBUG | |
445 | printk("%s: sr_read_cd lba=%d format=%d blksize=%d\n", | |
446 | cd->cdi.name, lba, format, blksize); | |
447 | #endif | |
448 | ||
449 | memset(&cgc, 0, sizeof(struct packet_command)); | |
450 | cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */ | |
451 | cgc.cmd[1] = ((format & 7) << 2); | |
452 | cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff; | |
453 | cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff; | |
454 | cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff; | |
455 | cgc.cmd[5] = (unsigned char) lba & 0xff; | |
456 | cgc.cmd[8] = 1; | |
457 | switch (blksize) { | |
458 | case 2336: | |
459 | cgc.cmd[9] = 0x58; | |
460 | break; | |
461 | case 2340: | |
462 | cgc.cmd[9] = 0x78; | |
463 | break; | |
464 | case 2352: | |
465 | cgc.cmd[9] = 0xf8; | |
466 | break; | |
467 | default: | |
468 | cgc.cmd[9] = 0x10; | |
469 | break; | |
470 | } | |
471 | cgc.buffer = dest; | |
472 | cgc.buflen = blksize; | |
473 | cgc.data_direction = DMA_FROM_DEVICE; | |
474 | cgc.timeout = IOCTL_TIMEOUT; | |
475 | return sr_do_ioctl(cd, &cgc); | |
476 | } | |
477 | ||
478 | /* | |
479 | * read sectors with blocksizes other than 2048 | |
480 | */ | |
481 | ||
482 | static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest) | |
483 | { | |
484 | struct packet_command cgc; | |
485 | int rc; | |
486 | ||
487 | /* we try the READ CD command first... */ | |
488 | if (cd->readcd_known) { | |
489 | rc = sr_read_cd(cd, dest, lba, 0, blksize); | |
490 | if (-EDRIVE_CANT_DO_THIS != rc) | |
491 | return rc; | |
492 | cd->readcd_known = 0; | |
493 | printk("CDROM does'nt support READ CD (0xbe) command\n"); | |
494 | /* fall & retry the other way */ | |
495 | } | |
496 | /* ... if this fails, we switch the blocksize using MODE SELECT */ | |
497 | if (blksize != cd->device->sector_size) { | |
498 | if (0 != (rc = sr_set_blocklength(cd, blksize))) | |
499 | return rc; | |
500 | } | |
501 | #ifdef DEBUG | |
502 | printk("%s: sr_read_sector lba=%d blksize=%d\n", cd->cdi.name, lba, blksize); | |
503 | #endif | |
504 | ||
505 | memset(&cgc, 0, sizeof(struct packet_command)); | |
506 | cgc.cmd[0] = GPCMD_READ_10; | |
507 | cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff; | |
508 | cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff; | |
509 | cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff; | |
510 | cgc.cmd[5] = (unsigned char) lba & 0xff; | |
511 | cgc.cmd[8] = 1; | |
512 | cgc.buffer = dest; | |
513 | cgc.buflen = blksize; | |
514 | cgc.data_direction = DMA_FROM_DEVICE; | |
515 | cgc.timeout = IOCTL_TIMEOUT; | |
516 | rc = sr_do_ioctl(cd, &cgc); | |
517 | ||
518 | return rc; | |
519 | } | |
520 | ||
521 | /* | |
522 | * read a sector in raw mode to check the sector format | |
523 | * ret: 1 == mode2 (XA), 0 == mode1, <0 == error | |
524 | */ | |
525 | ||
526 | int sr_is_xa(Scsi_CD *cd) | |
527 | { | |
528 | unsigned char *raw_sector; | |
529 | int is_xa; | |
530 | ||
531 | if (!xa_test) | |
532 | return 0; | |
533 | ||
534 | raw_sector = (unsigned char *) kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd)); | |
535 | if (!raw_sector) | |
536 | return -ENOMEM; | |
537 | if (0 == sr_read_sector(cd, cd->ms_offset + 16, | |
538 | CD_FRAMESIZE_RAW1, raw_sector)) { | |
539 | is_xa = (raw_sector[3] == 0x02) ? 1 : 0; | |
540 | } else { | |
541 | /* read a raw sector failed for some reason. */ | |
542 | is_xa = -1; | |
543 | } | |
544 | kfree(raw_sector); | |
545 | #ifdef DEBUG | |
546 | printk("%s: sr_is_xa: %d\n", cd->cdi.name, is_xa); | |
547 | #endif | |
548 | return is_xa; | |
549 | } | |
550 | ||
551 | int sr_dev_ioctl(struct cdrom_device_info *cdi, | |
552 | unsigned int cmd, unsigned long arg) | |
553 | { | |
554 | Scsi_CD *cd = cdi->handle; | |
555 | int ret; | |
556 | ||
557 | ret = scsi_nonblockable_ioctl(cd->device, cmd, | |
558 | (void __user *)arg, NULL); | |
559 | /* | |
560 | * ENODEV means that we didn't recognise the ioctl, or that we | |
561 | * cannot execute it in the current device state. In either | |
562 | * case fall through to scsi_ioctl, which will return ENDOEV again | |
563 | * if it doesn't recognise the ioctl | |
564 | */ | |
565 | if (ret != -ENODEV) | |
566 | return ret; | |
567 | return scsi_ioctl(cd->device, cmd, (void __user *)arg); | |
568 | } |