Commit | Line | Data |
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1da177e4 | 1 | #include <linux/kernel.h> |
1da177e4 LT |
2 | #include <linux/mm.h> |
3 | #include <linux/fs.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> | |
10 | #include <asm/io.h> | |
11 | #include <asm/uaccess.h> | |
12 | ||
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> | |
820732b5 | 19 | #include <scsi/scsi_cmnd.h> |
1da177e4 LT |
20 | |
21 | #include "sr.h" | |
22 | ||
23 | #if 0 | |
24 | #define DEBUG | |
25 | #endif | |
26 | ||
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; | |
30 | ||
31 | module_param(xa_test, int, S_IRUGO | S_IWUSR); | |
32 | ||
a09c6311 CH |
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) | |
36 | ||
37 | ||
38 | static int sr_read_tochdr(struct cdrom_device_info *cdi, | |
39 | struct cdrom_tochdr *tochdr) | |
40 | { | |
41 | struct scsi_cd *cd = cdi->handle; | |
42 | struct packet_command cgc; | |
43 | int result; | |
44 | unsigned char *buffer; | |
45 | ||
46 | buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
47 | if (!buffer) | |
48 | return -ENOMEM; | |
49 | ||
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 */ | |
54 | cgc.buffer = buffer; | |
55 | cgc.buflen = 12; | |
56 | cgc.quiet = 1; | |
57 | cgc.data_direction = DMA_FROM_DEVICE; | |
58 | ||
59 | result = sr_do_ioctl(cd, &cgc); | |
60 | ||
61 | tochdr->cdth_trk0 = buffer[2]; | |
62 | tochdr->cdth_trk1 = buffer[3]; | |
63 | ||
64 | kfree(buffer); | |
65 | return result; | |
66 | } | |
67 | ||
68 | static int sr_read_tocentry(struct cdrom_device_info *cdi, | |
69 | struct cdrom_tocentry *tocentry) | |
70 | { | |
71 | struct scsi_cd *cd = cdi->handle; | |
72 | struct packet_command cgc; | |
73 | int result; | |
74 | unsigned char *buffer; | |
75 | ||
76 | buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
77 | if (!buffer) | |
78 | return -ENOMEM; | |
79 | ||
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 */ | |
86 | cgc.buffer = buffer; | |
87 | cgc.buflen = 12; | |
88 | cgc.data_direction = DMA_FROM_DEVICE; | |
89 | ||
90 | result = sr_do_ioctl(cd, &cgc); | |
91 | ||
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]; | |
99 | } else | |
100 | tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8) | |
101 | + buffer[10]) << 8) + buffer[11]; | |
102 | ||
103 | kfree(buffer); | |
104 | return result; | |
105 | } | |
1da177e4 LT |
106 | |
107 | #define IOCTL_RETRIES 3 | |
108 | ||
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 */ | |
112 | ||
113 | static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti) | |
114 | { | |
115 | struct cdrom_tocentry trk0_te, trk1_te; | |
116 | struct cdrom_tochdr tochdr; | |
117 | struct packet_command cgc; | |
118 | int ntracks, ret; | |
119 | ||
a09c6311 CH |
120 | ret = sr_read_tochdr(cdi, &tochdr); |
121 | if (ret) | |
1da177e4 LT |
122 | return ret; |
123 | ||
124 | ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1; | |
125 | ||
126 | if (ti->cdti_trk1 == ntracks) | |
127 | ti->cdti_trk1 = CDROM_LEADOUT; | |
128 | else if (ti->cdti_trk1 != CDROM_LEADOUT) | |
129 | ti->cdti_trk1 ++; | |
130 | ||
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; | |
135 | ||
a09c6311 CH |
136 | ret = sr_read_tocentry(cdi, &trk0_te); |
137 | if (ret) | |
1da177e4 | 138 | return ret; |
a09c6311 CH |
139 | ret = sr_read_tocentry(cdi, &trk1_te); |
140 | if (ret) | |
1da177e4 LT |
141 | return ret; |
142 | ||
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); | |
154 | } | |
155 | ||
a09c6311 CH |
156 | static int sr_play_trkind(struct cdrom_device_info *cdi, |
157 | struct cdrom_ti *ti) | |
158 | ||
159 | { | |
160 | struct scsi_cd *cd = cdi->handle; | |
161 | struct packet_command cgc; | |
162 | int result; | |
163 | ||
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; | |
172 | ||
173 | result = sr_do_ioctl(cd, &cgc); | |
174 | if (result == -EDRIVE_CANT_DO_THIS) | |
175 | result = sr_fake_playtrkind(cdi, ti); | |
176 | ||
177 | return result; | |
178 | } | |
179 | ||
1da177e4 LT |
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 */ | |
183 | ||
184 | int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) | |
185 | { | |
1da177e4 | 186 | struct scsi_device *SDev; |
820732b5 | 187 | struct scsi_sense_hdr sshdr; |
1da177e4 | 188 | int result, err = 0, retries = 0; |
820732b5 | 189 | struct request_sense *sense = cgc->sense; |
1da177e4 LT |
190 | |
191 | SDev = cd->device; | |
820732b5 JB |
192 | |
193 | if (!sense) { | |
f716d830 | 194 | sense = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); |
820732b5 JB |
195 | if (!sense) { |
196 | err = -ENOMEM; | |
197 | goto out; | |
198 | } | |
199 | } | |
1da177e4 LT |
200 | |
201 | retry: | |
202 | if (!scsi_block_when_processing_errors(SDev)) { | |
203 | err = -ENODEV; | |
820732b5 | 204 | goto out; |
1da177e4 LT |
205 | } |
206 | ||
820732b5 JB |
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); | |
1da177e4 | 211 | |
820732b5 | 212 | scsi_normalize_sense((char *)sense, sizeof(*sense), &sshdr); |
1da177e4 LT |
213 | |
214 | /* Minimal error checking. Ignore cases we know about, and report the rest. */ | |
215 | if (driver_byte(result) != 0) { | |
820732b5 | 216 | switch (sshdr.sense_key) { |
1da177e4 LT |
217 | case UNIT_ATTENTION: |
218 | SDev->changed = 1; | |
219 | if (!cgc->quiet) | |
220 | printk(KERN_INFO "%s: disc change detected.\n", cd->cdi.name); | |
221 | if (retries++ < 10) | |
222 | goto retry; | |
223 | err = -ENOMEDIUM; | |
224 | break; | |
225 | case NOT_READY: /* This happens if there is no disc in drive */ | |
820732b5 JB |
226 | if (sshdr.asc == 0x04 && |
227 | sshdr.ascq == 0x01) { | |
1da177e4 LT |
228 | /* sense: Logical unit is in process of becoming ready */ |
229 | if (!cgc->quiet) | |
230 | printk(KERN_INFO "%s: CDROM not ready yet.\n", cd->cdi.name); | |
231 | if (retries++ < 10) { | |
232 | /* sleep 2 sec and try again */ | |
233 | ssleep(2); | |
234 | goto retry; | |
235 | } else { | |
236 | /* 20 secs are enough? */ | |
237 | err = -ENOMEDIUM; | |
238 | break; | |
239 | } | |
240 | } | |
241 | if (!cgc->quiet) | |
242 | printk(KERN_INFO "%s: CDROM not ready. Make sure there is a disc in the drive.\n", cd->cdi.name); | |
243 | #ifdef DEBUG | |
820732b5 | 244 | scsi_print_sense_hdr("sr", &sshdr); |
1da177e4 LT |
245 | #endif |
246 | err = -ENOMEDIUM; | |
247 | break; | |
248 | case ILLEGAL_REQUEST: | |
249 | err = -EIO; | |
820732b5 JB |
250 | if (sshdr.asc == 0x20 && |
251 | sshdr.ascq == 0x00) | |
1da177e4 LT |
252 | /* sense: Invalid command operation code */ |
253 | err = -EDRIVE_CANT_DO_THIS; | |
254 | #ifdef DEBUG | |
255 | __scsi_print_command(cgc->cmd); | |
820732b5 | 256 | scsi_print_sense_hdr("sr", &sshdr); |
1da177e4 LT |
257 | #endif |
258 | break; | |
259 | default: | |
260 | printk(KERN_ERR "%s: CDROM (ioctl) error, command: ", cd->cdi.name); | |
261 | __scsi_print_command(cgc->cmd); | |
820732b5 | 262 | scsi_print_sense_hdr("sr", &sshdr); |
1da177e4 LT |
263 | err = -EIO; |
264 | } | |
265 | } | |
266 | ||
1da177e4 | 267 | /* Wake up a process waiting for device */ |
1da177e4 | 268 | out: |
820732b5 JB |
269 | if (!cgc->sense) |
270 | kfree(sense); | |
1da177e4 LT |
271 | cgc->stat = err; |
272 | return err; | |
273 | } | |
274 | ||
275 | /* ---------------------------------------------------------------------- */ | |
276 | /* interface to cdrom.c */ | |
277 | ||
278 | static int test_unit_ready(Scsi_CD *cd) | |
279 | { | |
280 | struct packet_command cgc; | |
281 | ||
282 | memset(&cgc, 0, sizeof(struct packet_command)); | |
283 | cgc.cmd[0] = GPCMD_TEST_UNIT_READY; | |
284 | cgc.quiet = 1; | |
285 | cgc.data_direction = DMA_NONE; | |
286 | cgc.timeout = IOCTL_TIMEOUT; | |
287 | return sr_do_ioctl(cd, &cgc); | |
288 | } | |
289 | ||
290 | int sr_tray_move(struct cdrom_device_info *cdi, int pos) | |
291 | { | |
292 | Scsi_CD *cd = cdi->handle; | |
293 | struct packet_command cgc; | |
294 | ||
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); | |
301 | } | |
302 | ||
303 | int sr_lock_door(struct cdrom_device_info *cdi, int lock) | |
304 | { | |
305 | Scsi_CD *cd = cdi->handle; | |
306 | ||
307 | return scsi_set_medium_removal(cd->device, lock ? | |
308 | SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW); | |
309 | } | |
310 | ||
311 | int sr_drive_status(struct cdrom_device_info *cdi, int slot) | |
312 | { | |
313 | if (CDSL_CURRENT != slot) { | |
314 | /* we have no changer support */ | |
315 | return -EINVAL; | |
316 | } | |
317 | if (0 == test_unit_ready(cdi->handle)) | |
318 | return CDS_DISC_OK; | |
319 | ||
320 | return CDS_TRAY_OPEN; | |
321 | } | |
322 | ||
323 | int sr_disk_status(struct cdrom_device_info *cdi) | |
324 | { | |
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; | |
329 | ||
330 | /* look for data tracks */ | |
a09c6311 CH |
331 | rc = sr_read_tochdr(cdi, &toc_h); |
332 | if (rc) | |
1da177e4 LT |
333 | return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO; |
334 | ||
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; | |
a09c6311 | 338 | if (sr_read_tocentry(cdi, &toc_e)) |
1da177e4 LT |
339 | return CDS_NO_INFO; |
340 | if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) { | |
341 | have_datatracks = 1; | |
342 | break; | |
343 | } | |
344 | } | |
345 | if (!have_datatracks) | |
346 | return CDS_AUDIO; | |
347 | ||
348 | if (cd->xa_flag) | |
349 | return CDS_XA_2_1; | |
350 | else | |
351 | return CDS_DATA_1; | |
352 | } | |
353 | ||
354 | int sr_get_last_session(struct cdrom_device_info *cdi, | |
355 | struct cdrom_multisession *ms_info) | |
356 | { | |
357 | Scsi_CD *cd = cdi->handle; | |
358 | ||
359 | ms_info->addr.lba = cd->ms_offset; | |
360 | ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0; | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
1da177e4 LT |
365 | int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn) |
366 | { | |
367 | Scsi_CD *cd = cdi->handle; | |
368 | struct packet_command cgc; | |
369 | char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
370 | int result; | |
371 | ||
3a73e8c7 ND |
372 | if (!buffer) |
373 | return -ENOMEM; | |
374 | ||
1da177e4 LT |
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 */ | |
379 | cgc.cmd[8] = 24; | |
380 | cgc.buffer = buffer; | |
381 | cgc.buflen = 24; | |
382 | cgc.data_direction = DMA_FROM_DEVICE; | |
383 | cgc.timeout = IOCTL_TIMEOUT; | |
384 | result = sr_do_ioctl(cd, &cgc); | |
385 | ||
386 | memcpy(mcn->medium_catalog_number, buffer + 9, 13); | |
387 | mcn->medium_catalog_number[13] = 0; | |
388 | ||
389 | kfree(buffer); | |
390 | return result; | |
391 | } | |
392 | ||
393 | int sr_reset(struct cdrom_device_info *cdi) | |
394 | { | |
395 | return 0; | |
396 | } | |
397 | ||
398 | int sr_select_speed(struct cdrom_device_info *cdi, int speed) | |
399 | { | |
400 | Scsi_CD *cd = cdi->handle; | |
401 | struct packet_command cgc; | |
402 | ||
403 | if (speed == 0) | |
404 | speed = 0xffff; /* set to max */ | |
405 | else | |
406 | speed *= 177; /* Nx to kbyte/s */ | |
407 | ||
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; | |
414 | ||
415 | if (sr_do_ioctl(cd, &cgc)) | |
416 | return -EIO; | |
417 | return 0; | |
418 | } | |
419 | ||
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. */ | |
425 | ||
426 | int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg) | |
427 | { | |
1da177e4 LT |
428 | switch (cmd) { |
429 | case CDROMREADTOCHDR: | |
a09c6311 | 430 | return sr_read_tochdr(cdi, arg); |
1da177e4 | 431 | case CDROMREADTOCENTRY: |
a09c6311 CH |
432 | return sr_read_tocentry(cdi, arg); |
433 | case CDROMPLAYTRKIND: | |
434 | return sr_play_trkind(cdi, arg); | |
1da177e4 | 435 | default: |
a09c6311 | 436 | return -EINVAL; |
1da177e4 | 437 | } |
1da177e4 LT |
438 | } |
439 | ||
440 | /* ----------------------------------------------------------------------- | |
441 | * a function to read all sorts of funny cdrom sectors using the READ_CD | |
442 | * scsi-3 mmc command | |
443 | * | |
444 | * lba: linear block address | |
445 | * format: 0 = data (anything) | |
446 | * 1 = audio | |
447 | * 2 = data (mode 1) | |
448 | * 3 = data (mode 2) | |
449 | * 4 = data (mode 2 form1) | |
450 | * 5 = data (mode 2 form2) | |
451 | * blksize: 2048 | 2336 | 2340 | 2352 | |
452 | */ | |
453 | ||
454 | static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize) | |
455 | { | |
456 | struct packet_command cgc; | |
457 | ||
458 | #ifdef DEBUG | |
459 | printk("%s: sr_read_cd lba=%d format=%d blksize=%d\n", | |
460 | cd->cdi.name, lba, format, blksize); | |
461 | #endif | |
462 | ||
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; | |
470 | cgc.cmd[8] = 1; | |
471 | switch (blksize) { | |
472 | case 2336: | |
473 | cgc.cmd[9] = 0x58; | |
474 | break; | |
475 | case 2340: | |
476 | cgc.cmd[9] = 0x78; | |
477 | break; | |
478 | case 2352: | |
479 | cgc.cmd[9] = 0xf8; | |
480 | break; | |
481 | default: | |
482 | cgc.cmd[9] = 0x10; | |
483 | break; | |
484 | } | |
485 | cgc.buffer = dest; | |
486 | cgc.buflen = blksize; | |
487 | cgc.data_direction = DMA_FROM_DEVICE; | |
488 | cgc.timeout = IOCTL_TIMEOUT; | |
489 | return sr_do_ioctl(cd, &cgc); | |
490 | } | |
491 | ||
492 | /* | |
493 | * read sectors with blocksizes other than 2048 | |
494 | */ | |
495 | ||
496 | static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest) | |
497 | { | |
498 | struct packet_command cgc; | |
499 | int rc; | |
500 | ||
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) | |
505 | return rc; | |
506 | cd->readcd_known = 0; | |
507 | printk("CDROM does'nt support READ CD (0xbe) command\n"); | |
508 | /* fall & retry the other way */ | |
509 | } | |
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))) | |
513 | return rc; | |
514 | } | |
515 | #ifdef DEBUG | |
516 | printk("%s: sr_read_sector lba=%d blksize=%d\n", cd->cdi.name, lba, blksize); | |
517 | #endif | |
518 | ||
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; | |
525 | cgc.cmd[8] = 1; | |
526 | cgc.buffer = dest; | |
527 | cgc.buflen = blksize; | |
528 | cgc.data_direction = DMA_FROM_DEVICE; | |
529 | cgc.timeout = IOCTL_TIMEOUT; | |
530 | rc = sr_do_ioctl(cd, &cgc); | |
531 | ||
532 | return rc; | |
533 | } | |
534 | ||
535 | /* | |
536 | * read a sector in raw mode to check the sector format | |
537 | * ret: 1 == mode2 (XA), 0 == mode1, <0 == error | |
538 | */ | |
539 | ||
540 | int sr_is_xa(Scsi_CD *cd) | |
541 | { | |
542 | unsigned char *raw_sector; | |
543 | int is_xa; | |
544 | ||
545 | if (!xa_test) | |
546 | return 0; | |
547 | ||
5cbded58 | 548 | raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd)); |
1da177e4 LT |
549 | if (!raw_sector) |
550 | return -ENOMEM; | |
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; | |
554 | } else { | |
555 | /* read a raw sector failed for some reason. */ | |
556 | is_xa = -1; | |
557 | } | |
558 | kfree(raw_sector); | |
559 | #ifdef DEBUG | |
560 | printk("%s: sr_is_xa: %d\n", cd->cdi.name, is_xa); | |
561 | #endif | |
562 | return is_xa; | |
563 | } |