Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | #include <linux/kernel.h> |
1da177e4 LT |
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> | |
acf3368f | 8 | #include <linux/module.h> |
1da177e4 LT |
9 | #include <linux/blkpg.h> |
10 | #include <linux/cdrom.h> | |
11 | #include <linux/delay.h> | |
5a0e3ad6 | 12 | #include <linux/slab.h> |
1da177e4 | 13 | #include <asm/io.h> |
7c0f6ba6 | 14 | #include <linux/uaccess.h> |
1da177e4 LT |
15 | |
16 | #include <scsi/scsi.h> | |
17 | #include <scsi/scsi_dbg.h> | |
18 | #include <scsi/scsi_device.h> | |
19 | #include <scsi/scsi_eh.h> | |
20 | #include <scsi/scsi_host.h> | |
21 | #include <scsi/scsi_ioctl.h> | |
820732b5 | 22 | #include <scsi/scsi_cmnd.h> |
1da177e4 LT |
23 | |
24 | #include "sr.h" | |
25 | ||
26 | #if 0 | |
27 | #define DEBUG | |
28 | #endif | |
29 | ||
30 | /* The sr_is_xa() seems to trigger firmware bugs with some drives :-( | |
31 | * It is off by default and can be turned on with this module parameter */ | |
32 | static int xa_test = 0; | |
33 | ||
34 | module_param(xa_test, int, S_IRUGO | S_IWUSR); | |
35 | ||
a09c6311 CH |
36 | /* primitive to determine whether we need to have GFP_DMA set based on |
37 | * the status of the unchecked_isa_dma flag in the host structure */ | |
38 | #define SR_GFP_DMA(cd) (((cd)->device->host->unchecked_isa_dma) ? GFP_DMA : 0) | |
39 | ||
a09c6311 CH |
40 | static int sr_read_tochdr(struct cdrom_device_info *cdi, |
41 | struct cdrom_tochdr *tochdr) | |
42 | { | |
43 | struct scsi_cd *cd = cdi->handle; | |
44 | struct packet_command cgc; | |
45 | int result; | |
46 | unsigned char *buffer; | |
47 | ||
48 | buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
49 | if (!buffer) | |
50 | return -ENOMEM; | |
51 | ||
52 | memset(&cgc, 0, sizeof(struct packet_command)); | |
53 | cgc.timeout = IOCTL_TIMEOUT; | |
54 | cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; | |
55 | cgc.cmd[8] = 12; /* LSB of length */ | |
56 | cgc.buffer = buffer; | |
57 | cgc.buflen = 12; | |
58 | cgc.quiet = 1; | |
59 | cgc.data_direction = DMA_FROM_DEVICE; | |
60 | ||
61 | result = sr_do_ioctl(cd, &cgc); | |
62 | ||
63 | tochdr->cdth_trk0 = buffer[2]; | |
64 | tochdr->cdth_trk1 = buffer[3]; | |
65 | ||
66 | kfree(buffer); | |
67 | return result; | |
68 | } | |
69 | ||
70 | static int sr_read_tocentry(struct cdrom_device_info *cdi, | |
71 | struct cdrom_tocentry *tocentry) | |
72 | { | |
73 | struct scsi_cd *cd = cdi->handle; | |
74 | struct packet_command cgc; | |
75 | int result; | |
76 | unsigned char *buffer; | |
77 | ||
78 | buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
79 | if (!buffer) | |
80 | return -ENOMEM; | |
81 | ||
82 | memset(&cgc, 0, sizeof(struct packet_command)); | |
83 | cgc.timeout = IOCTL_TIMEOUT; | |
84 | cgc.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; | |
85 | cgc.cmd[1] |= (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0; | |
86 | cgc.cmd[6] = tocentry->cdte_track; | |
87 | cgc.cmd[8] = 12; /* LSB of length */ | |
88 | cgc.buffer = buffer; | |
89 | cgc.buflen = 12; | |
90 | cgc.data_direction = DMA_FROM_DEVICE; | |
91 | ||
92 | result = sr_do_ioctl(cd, &cgc); | |
93 | ||
94 | tocentry->cdte_ctrl = buffer[5] & 0xf; | |
95 | tocentry->cdte_adr = buffer[5] >> 4; | |
96 | tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0; | |
97 | if (tocentry->cdte_format == CDROM_MSF) { | |
98 | tocentry->cdte_addr.msf.minute = buffer[9]; | |
99 | tocentry->cdte_addr.msf.second = buffer[10]; | |
100 | tocentry->cdte_addr.msf.frame = buffer[11]; | |
101 | } else | |
102 | tocentry->cdte_addr.lba = (((((buffer[8] << 8) + buffer[9]) << 8) | |
103 | + buffer[10]) << 8) + buffer[11]; | |
104 | ||
105 | kfree(buffer); | |
106 | return result; | |
107 | } | |
1da177e4 LT |
108 | |
109 | #define IOCTL_RETRIES 3 | |
110 | ||
111 | /* ATAPI drives don't have a SCMD_PLAYAUDIO_TI command. When these drives | |
112 | are emulating a SCSI device via the idescsi module, they need to have | |
113 | CDROMPLAYTRKIND commands translated into CDROMPLAYMSF commands for them */ | |
114 | ||
115 | static int sr_fake_playtrkind(struct cdrom_device_info *cdi, struct cdrom_ti *ti) | |
116 | { | |
117 | struct cdrom_tocentry trk0_te, trk1_te; | |
118 | struct cdrom_tochdr tochdr; | |
119 | struct packet_command cgc; | |
120 | int ntracks, ret; | |
121 | ||
a09c6311 CH |
122 | ret = sr_read_tochdr(cdi, &tochdr); |
123 | if (ret) | |
1da177e4 LT |
124 | return ret; |
125 | ||
126 | ntracks = tochdr.cdth_trk1 - tochdr.cdth_trk0 + 1; | |
127 | ||
128 | if (ti->cdti_trk1 == ntracks) | |
129 | ti->cdti_trk1 = CDROM_LEADOUT; | |
130 | else if (ti->cdti_trk1 != CDROM_LEADOUT) | |
131 | ti->cdti_trk1 ++; | |
132 | ||
133 | trk0_te.cdte_track = ti->cdti_trk0; | |
134 | trk0_te.cdte_format = CDROM_MSF; | |
135 | trk1_te.cdte_track = ti->cdti_trk1; | |
136 | trk1_te.cdte_format = CDROM_MSF; | |
137 | ||
a09c6311 CH |
138 | ret = sr_read_tocentry(cdi, &trk0_te); |
139 | if (ret) | |
1da177e4 | 140 | return ret; |
a09c6311 CH |
141 | ret = sr_read_tocentry(cdi, &trk1_te); |
142 | if (ret) | |
1da177e4 LT |
143 | return ret; |
144 | ||
145 | memset(&cgc, 0, sizeof(struct packet_command)); | |
146 | cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF; | |
147 | cgc.cmd[3] = trk0_te.cdte_addr.msf.minute; | |
148 | cgc.cmd[4] = trk0_te.cdte_addr.msf.second; | |
149 | cgc.cmd[5] = trk0_te.cdte_addr.msf.frame; | |
150 | cgc.cmd[6] = trk1_te.cdte_addr.msf.minute; | |
151 | cgc.cmd[7] = trk1_te.cdte_addr.msf.second; | |
152 | cgc.cmd[8] = trk1_te.cdte_addr.msf.frame; | |
153 | cgc.data_direction = DMA_NONE; | |
154 | cgc.timeout = IOCTL_TIMEOUT; | |
155 | return sr_do_ioctl(cdi->handle, &cgc); | |
156 | } | |
157 | ||
a09c6311 CH |
158 | static int sr_play_trkind(struct cdrom_device_info *cdi, |
159 | struct cdrom_ti *ti) | |
160 | ||
161 | { | |
162 | struct scsi_cd *cd = cdi->handle; | |
163 | struct packet_command cgc; | |
164 | int result; | |
165 | ||
166 | memset(&cgc, 0, sizeof(struct packet_command)); | |
167 | cgc.timeout = IOCTL_TIMEOUT; | |
168 | cgc.cmd[0] = GPCMD_PLAYAUDIO_TI; | |
169 | cgc.cmd[4] = ti->cdti_trk0; | |
170 | cgc.cmd[5] = ti->cdti_ind0; | |
171 | cgc.cmd[7] = ti->cdti_trk1; | |
172 | cgc.cmd[8] = ti->cdti_ind1; | |
173 | cgc.data_direction = DMA_NONE; | |
174 | ||
175 | result = sr_do_ioctl(cd, &cgc); | |
176 | if (result == -EDRIVE_CANT_DO_THIS) | |
177 | result = sr_fake_playtrkind(cdi, ti); | |
178 | ||
179 | return result; | |
180 | } | |
181 | ||
1da177e4 LT |
182 | /* We do our own retries because we want to know what the specific |
183 | error code is. Normally the UNIT_ATTENTION code will automatically | |
184 | clear after one error */ | |
185 | ||
186 | int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) | |
187 | { | |
1da177e4 | 188 | struct scsi_device *SDev; |
820732b5 | 189 | struct scsi_sense_hdr sshdr; |
1da177e4 LT |
190 | int result, err = 0, retries = 0; |
191 | ||
192 | SDev = cd->device; | |
820732b5 | 193 | |
1da177e4 LT |
194 | retry: |
195 | if (!scsi_block_when_processing_errors(SDev)) { | |
196 | err = -ENODEV; | |
820732b5 | 197 | goto out; |
1da177e4 LT |
198 | } |
199 | ||
820732b5 | 200 | result = scsi_execute(SDev, cgc->cmd, cgc->data_direction, |
76aaf87b CH |
201 | cgc->buffer, cgc->buflen, |
202 | (unsigned char *)cgc->sense, &sshdr, | |
203 | cgc->timeout, IOCTL_RETRIES, 0, 0, NULL); | |
1da177e4 LT |
204 | |
205 | /* Minimal error checking. Ignore cases we know about, and report the rest. */ | |
206 | if (driver_byte(result) != 0) { | |
820732b5 | 207 | switch (sshdr.sense_key) { |
1da177e4 LT |
208 | case UNIT_ATTENTION: |
209 | SDev->changed = 1; | |
210 | if (!cgc->quiet) | |
96eefad2 HR |
211 | sr_printk(KERN_INFO, cd, |
212 | "disc change detected.\n"); | |
1da177e4 LT |
213 | if (retries++ < 10) |
214 | goto retry; | |
215 | err = -ENOMEDIUM; | |
216 | break; | |
217 | case NOT_READY: /* This happens if there is no disc in drive */ | |
820732b5 JB |
218 | if (sshdr.asc == 0x04 && |
219 | sshdr.ascq == 0x01) { | |
1da177e4 LT |
220 | /* sense: Logical unit is in process of becoming ready */ |
221 | if (!cgc->quiet) | |
96eefad2 HR |
222 | sr_printk(KERN_INFO, cd, |
223 | "CDROM not ready yet.\n"); | |
1da177e4 LT |
224 | if (retries++ < 10) { |
225 | /* sleep 2 sec and try again */ | |
226 | ssleep(2); | |
227 | goto retry; | |
228 | } else { | |
229 | /* 20 secs are enough? */ | |
230 | err = -ENOMEDIUM; | |
231 | break; | |
232 | } | |
233 | } | |
234 | if (!cgc->quiet) | |
96eefad2 HR |
235 | sr_printk(KERN_INFO, cd, |
236 | "CDROM not ready. Make sure there " | |
237 | "is a disc in the drive.\n"); | |
1da177e4 LT |
238 | err = -ENOMEDIUM; |
239 | break; | |
240 | case ILLEGAL_REQUEST: | |
241 | err = -EIO; | |
820732b5 JB |
242 | if (sshdr.asc == 0x20 && |
243 | sshdr.ascq == 0x00) | |
1da177e4 LT |
244 | /* sense: Invalid command operation code */ |
245 | err = -EDRIVE_CANT_DO_THIS; | |
1da177e4 LT |
246 | break; |
247 | default: | |
1da177e4 LT |
248 | err = -EIO; |
249 | } | |
250 | } | |
251 | ||
1da177e4 | 252 | /* Wake up a process waiting for device */ |
1da177e4 LT |
253 | out: |
254 | cgc->stat = err; | |
255 | return err; | |
256 | } | |
257 | ||
258 | /* ---------------------------------------------------------------------- */ | |
259 | /* interface to cdrom.c */ | |
260 | ||
1da177e4 LT |
261 | int sr_tray_move(struct cdrom_device_info *cdi, int pos) |
262 | { | |
263 | Scsi_CD *cd = cdi->handle; | |
264 | struct packet_command cgc; | |
265 | ||
266 | memset(&cgc, 0, sizeof(struct packet_command)); | |
267 | cgc.cmd[0] = GPCMD_START_STOP_UNIT; | |
268 | cgc.cmd[4] = (pos == 0) ? 0x03 /* close */ : 0x02 /* eject */ ; | |
269 | cgc.data_direction = DMA_NONE; | |
270 | cgc.timeout = IOCTL_TIMEOUT; | |
271 | return sr_do_ioctl(cd, &cgc); | |
272 | } | |
273 | ||
274 | int sr_lock_door(struct cdrom_device_info *cdi, int lock) | |
275 | { | |
276 | Scsi_CD *cd = cdi->handle; | |
277 | ||
278 | return scsi_set_medium_removal(cd->device, lock ? | |
279 | SCSI_REMOVAL_PREVENT : SCSI_REMOVAL_ALLOW); | |
280 | } | |
281 | ||
282 | int sr_drive_status(struct cdrom_device_info *cdi, int slot) | |
283 | { | |
210ba1d1 JB |
284 | struct scsi_cd *cd = cdi->handle; |
285 | struct scsi_sense_hdr sshdr; | |
286 | struct media_event_desc med; | |
287 | ||
1da177e4 LT |
288 | if (CDSL_CURRENT != slot) { |
289 | /* we have no changer support */ | |
290 | return -EINVAL; | |
291 | } | |
9f8a2c23 | 292 | if (!scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr)) |
1da177e4 LT |
293 | return CDS_DISC_OK; |
294 | ||
96bcc722 PJ |
295 | /* SK/ASC/ASCQ of 2/4/1 means "unit is becoming ready" */ |
296 | if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY | |
297 | && sshdr.asc == 0x04 && sshdr.ascq == 0x01) | |
298 | return CDS_DRIVE_NOT_READY; | |
299 | ||
210ba1d1 JB |
300 | if (!cdrom_get_media_event(cdi, &med)) { |
301 | if (med.media_present) | |
302 | return CDS_DISC_OK; | |
303 | else if (med.door_open) | |
304 | return CDS_TRAY_OPEN; | |
305 | else | |
306 | return CDS_NO_DISC; | |
307 | } | |
308 | ||
b8479178 RJ |
309 | /* |
310 | * SK/ASC/ASCQ of 2/4/2 means "initialization required" | |
311 | * Using CD_TRAY_OPEN results in an START_STOP_UNIT to close | |
312 | * the tray, which resolves the initialization requirement. | |
313 | */ | |
314 | if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY | |
315 | && sshdr.asc == 0x04 && sshdr.ascq == 0x02) | |
316 | return CDS_TRAY_OPEN; | |
317 | ||
210ba1d1 JB |
318 | /* |
319 | * 0x04 is format in progress .. but there must be a disc present! | |
320 | */ | |
321 | if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04) | |
322 | return CDS_DISC_OK; | |
323 | ||
324 | /* | |
325 | * If not using Mt Fuji extended media tray reports, | |
326 | * just return TRAY_OPEN since ATAPI doesn't provide | |
327 | * any other way to detect this... | |
328 | */ | |
329 | if (scsi_sense_valid(&sshdr) && | |
330 | /* 0x3a is medium not present */ | |
331 | sshdr.asc == 0x3a) | |
332 | return CDS_NO_DISC; | |
333 | else | |
334 | return CDS_TRAY_OPEN; | |
335 | ||
336 | return CDS_DRIVE_NOT_READY; | |
1da177e4 LT |
337 | } |
338 | ||
339 | int sr_disk_status(struct cdrom_device_info *cdi) | |
340 | { | |
341 | Scsi_CD *cd = cdi->handle; | |
342 | struct cdrom_tochdr toc_h; | |
343 | struct cdrom_tocentry toc_e; | |
344 | int i, rc, have_datatracks = 0; | |
345 | ||
346 | /* look for data tracks */ | |
a09c6311 CH |
347 | rc = sr_read_tochdr(cdi, &toc_h); |
348 | if (rc) | |
1da177e4 LT |
349 | return (rc == -ENOMEDIUM) ? CDS_NO_DISC : CDS_NO_INFO; |
350 | ||
351 | for (i = toc_h.cdth_trk0; i <= toc_h.cdth_trk1; i++) { | |
352 | toc_e.cdte_track = i; | |
353 | toc_e.cdte_format = CDROM_LBA; | |
a09c6311 | 354 | if (sr_read_tocentry(cdi, &toc_e)) |
1da177e4 LT |
355 | return CDS_NO_INFO; |
356 | if (toc_e.cdte_ctrl & CDROM_DATA_TRACK) { | |
357 | have_datatracks = 1; | |
358 | break; | |
359 | } | |
360 | } | |
361 | if (!have_datatracks) | |
362 | return CDS_AUDIO; | |
363 | ||
364 | if (cd->xa_flag) | |
365 | return CDS_XA_2_1; | |
366 | else | |
367 | return CDS_DATA_1; | |
368 | } | |
369 | ||
370 | int sr_get_last_session(struct cdrom_device_info *cdi, | |
371 | struct cdrom_multisession *ms_info) | |
372 | { | |
373 | Scsi_CD *cd = cdi->handle; | |
374 | ||
375 | ms_info->addr.lba = cd->ms_offset; | |
376 | ms_info->xa_flag = cd->xa_flag || cd->ms_offset > 0; | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
1da177e4 LT |
381 | int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn) |
382 | { | |
383 | Scsi_CD *cd = cdi->handle; | |
384 | struct packet_command cgc; | |
385 | char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd)); | |
386 | int result; | |
387 | ||
3a73e8c7 ND |
388 | if (!buffer) |
389 | return -ENOMEM; | |
390 | ||
1da177e4 LT |
391 | memset(&cgc, 0, sizeof(struct packet_command)); |
392 | cgc.cmd[0] = GPCMD_READ_SUBCHANNEL; | |
393 | cgc.cmd[2] = 0x40; /* I do want the subchannel info */ | |
394 | cgc.cmd[3] = 0x02; /* Give me medium catalog number info */ | |
395 | cgc.cmd[8] = 24; | |
396 | cgc.buffer = buffer; | |
397 | cgc.buflen = 24; | |
398 | cgc.data_direction = DMA_FROM_DEVICE; | |
399 | cgc.timeout = IOCTL_TIMEOUT; | |
400 | result = sr_do_ioctl(cd, &cgc); | |
401 | ||
402 | memcpy(mcn->medium_catalog_number, buffer + 9, 13); | |
403 | mcn->medium_catalog_number[13] = 0; | |
404 | ||
405 | kfree(buffer); | |
406 | return result; | |
407 | } | |
408 | ||
409 | int sr_reset(struct cdrom_device_info *cdi) | |
410 | { | |
411 | return 0; | |
412 | } | |
413 | ||
414 | int sr_select_speed(struct cdrom_device_info *cdi, int speed) | |
415 | { | |
416 | Scsi_CD *cd = cdi->handle; | |
417 | struct packet_command cgc; | |
418 | ||
419 | if (speed == 0) | |
420 | speed = 0xffff; /* set to max */ | |
421 | else | |
422 | speed *= 177; /* Nx to kbyte/s */ | |
423 | ||
424 | memset(&cgc, 0, sizeof(struct packet_command)); | |
425 | cgc.cmd[0] = GPCMD_SET_SPEED; /* SET CD SPEED */ | |
426 | cgc.cmd[2] = (speed >> 8) & 0xff; /* MSB for speed (in kbytes/sec) */ | |
427 | cgc.cmd[3] = speed & 0xff; /* LSB */ | |
428 | cgc.data_direction = DMA_NONE; | |
429 | cgc.timeout = IOCTL_TIMEOUT; | |
430 | ||
431 | if (sr_do_ioctl(cd, &cgc)) | |
432 | return -EIO; | |
433 | return 0; | |
434 | } | |
435 | ||
436 | /* ----------------------------------------------------------------------- */ | |
437 | /* this is called by the generic cdrom driver. arg is a _kernel_ pointer, */ | |
438 | /* because the generic cdrom driver does the user access stuff for us. */ | |
439 | /* only cdromreadtochdr and cdromreadtocentry are left - for use with the */ | |
440 | /* sr_disk_status interface for the generic cdrom driver. */ | |
441 | ||
442 | int sr_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg) | |
443 | { | |
1da177e4 LT |
444 | switch (cmd) { |
445 | case CDROMREADTOCHDR: | |
a09c6311 | 446 | return sr_read_tochdr(cdi, arg); |
1da177e4 | 447 | case CDROMREADTOCENTRY: |
a09c6311 CH |
448 | return sr_read_tocentry(cdi, arg); |
449 | case CDROMPLAYTRKIND: | |
450 | return sr_play_trkind(cdi, arg); | |
1da177e4 | 451 | default: |
a09c6311 | 452 | return -EINVAL; |
1da177e4 | 453 | } |
1da177e4 LT |
454 | } |
455 | ||
456 | /* ----------------------------------------------------------------------- | |
457 | * a function to read all sorts of funny cdrom sectors using the READ_CD | |
458 | * scsi-3 mmc command | |
459 | * | |
460 | * lba: linear block address | |
461 | * format: 0 = data (anything) | |
462 | * 1 = audio | |
463 | * 2 = data (mode 1) | |
464 | * 3 = data (mode 2) | |
465 | * 4 = data (mode 2 form1) | |
466 | * 5 = data (mode 2 form2) | |
467 | * blksize: 2048 | 2336 | 2340 | 2352 | |
468 | */ | |
469 | ||
470 | static int sr_read_cd(Scsi_CD *cd, unsigned char *dest, int lba, int format, int blksize) | |
471 | { | |
472 | struct packet_command cgc; | |
473 | ||
474 | #ifdef DEBUG | |
96eefad2 HR |
475 | sr_printk(KERN_INFO, cd, "sr_read_cd lba=%d format=%d blksize=%d\n", |
476 | lba, format, blksize); | |
1da177e4 LT |
477 | #endif |
478 | ||
479 | memset(&cgc, 0, sizeof(struct packet_command)); | |
480 | cgc.cmd[0] = GPCMD_READ_CD; /* READ_CD */ | |
481 | cgc.cmd[1] = ((format & 7) << 2); | |
482 | cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff; | |
483 | cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff; | |
484 | cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff; | |
485 | cgc.cmd[5] = (unsigned char) lba & 0xff; | |
486 | cgc.cmd[8] = 1; | |
487 | switch (blksize) { | |
488 | case 2336: | |
489 | cgc.cmd[9] = 0x58; | |
490 | break; | |
491 | case 2340: | |
492 | cgc.cmd[9] = 0x78; | |
493 | break; | |
494 | case 2352: | |
495 | cgc.cmd[9] = 0xf8; | |
496 | break; | |
497 | default: | |
498 | cgc.cmd[9] = 0x10; | |
499 | break; | |
500 | } | |
501 | cgc.buffer = dest; | |
502 | cgc.buflen = blksize; | |
503 | cgc.data_direction = DMA_FROM_DEVICE; | |
504 | cgc.timeout = IOCTL_TIMEOUT; | |
505 | return sr_do_ioctl(cd, &cgc); | |
506 | } | |
507 | ||
508 | /* | |
509 | * read sectors with blocksizes other than 2048 | |
510 | */ | |
511 | ||
512 | static int sr_read_sector(Scsi_CD *cd, int lba, int blksize, unsigned char *dest) | |
513 | { | |
514 | struct packet_command cgc; | |
515 | int rc; | |
516 | ||
517 | /* we try the READ CD command first... */ | |
518 | if (cd->readcd_known) { | |
519 | rc = sr_read_cd(cd, dest, lba, 0, blksize); | |
520 | if (-EDRIVE_CANT_DO_THIS != rc) | |
521 | return rc; | |
522 | cd->readcd_known = 0; | |
96eefad2 HR |
523 | sr_printk(KERN_INFO, cd, |
524 | "CDROM does'nt support READ CD (0xbe) command\n"); | |
1da177e4 LT |
525 | /* fall & retry the other way */ |
526 | } | |
527 | /* ... if this fails, we switch the blocksize using MODE SELECT */ | |
528 | if (blksize != cd->device->sector_size) { | |
529 | if (0 != (rc = sr_set_blocklength(cd, blksize))) | |
530 | return rc; | |
531 | } | |
532 | #ifdef DEBUG | |
96eefad2 HR |
533 | sr_printk(KERN_INFO, cd, "sr_read_sector lba=%d blksize=%d\n", |
534 | lba, blksize); | |
1da177e4 LT |
535 | #endif |
536 | ||
537 | memset(&cgc, 0, sizeof(struct packet_command)); | |
538 | cgc.cmd[0] = GPCMD_READ_10; | |
539 | cgc.cmd[2] = (unsigned char) (lba >> 24) & 0xff; | |
540 | cgc.cmd[3] = (unsigned char) (lba >> 16) & 0xff; | |
541 | cgc.cmd[4] = (unsigned char) (lba >> 8) & 0xff; | |
542 | cgc.cmd[5] = (unsigned char) lba & 0xff; | |
543 | cgc.cmd[8] = 1; | |
544 | cgc.buffer = dest; | |
545 | cgc.buflen = blksize; | |
546 | cgc.data_direction = DMA_FROM_DEVICE; | |
547 | cgc.timeout = IOCTL_TIMEOUT; | |
548 | rc = sr_do_ioctl(cd, &cgc); | |
549 | ||
550 | return rc; | |
551 | } | |
552 | ||
553 | /* | |
554 | * read a sector in raw mode to check the sector format | |
555 | * ret: 1 == mode2 (XA), 0 == mode1, <0 == error | |
556 | */ | |
557 | ||
558 | int sr_is_xa(Scsi_CD *cd) | |
559 | { | |
560 | unsigned char *raw_sector; | |
561 | int is_xa; | |
562 | ||
563 | if (!xa_test) | |
564 | return 0; | |
565 | ||
5cbded58 | 566 | raw_sector = kmalloc(2048, GFP_KERNEL | SR_GFP_DMA(cd)); |
1da177e4 LT |
567 | if (!raw_sector) |
568 | return -ENOMEM; | |
569 | if (0 == sr_read_sector(cd, cd->ms_offset + 16, | |
570 | CD_FRAMESIZE_RAW1, raw_sector)) { | |
571 | is_xa = (raw_sector[3] == 0x02) ? 1 : 0; | |
572 | } else { | |
573 | /* read a raw sector failed for some reason. */ | |
574 | is_xa = -1; | |
575 | } | |
576 | kfree(raw_sector); | |
577 | #ifdef DEBUG | |
96eefad2 | 578 | sr_printk(KERN_INFO, cd, "sr_is_xa: %d\n", is_xa); |
1da177e4 LT |
579 | #endif |
580 | return is_xa; | |
581 | } |