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103#define PCD_VERSION "1.07"
104#define PCD_MAJOR 46
105#define PCD_NAME "pcd"
106#define PCD_UNITS 4
107
108
109
110
111
112
113
114static int verbose = 0;
115static int major = PCD_MAJOR;
116static char *name = PCD_NAME;
117static int nice = 0;
118static int disable = 0;
119
120static int drive0[6] = { 0, 0, 0, -1, -1, -1 };
121static int drive1[6] = { 0, 0, 0, -1, -1, -1 };
122static int drive2[6] = { 0, 0, 0, -1, -1, -1 };
123static int drive3[6] = { 0, 0, 0, -1, -1, -1 };
124
125static int (*drives[4])[6] = {&drive0, &drive1, &drive2, &drive3};
126static int pcd_drive_count;
127
128enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY};
129
130
131
132#include <linux/module.h>
133#include <linux/init.h>
134#include <linux/errno.h>
135#include <linux/fs.h>
136#include <linux/kernel.h>
137#include <linux/delay.h>
138#include <linux/cdrom.h>
139#include <linux/spinlock.h>
140#include <linux/blkdev.h>
141#include <asm/uaccess.h>
142
143static DEFINE_SPINLOCK(pcd_lock);
144
145module_param(verbose, bool, 0644);
146module_param(major, int, 0);
147module_param(name, charp, 0);
148module_param(nice, int, 0);
149module_param_array(drive0, int, NULL, 0);
150module_param_array(drive1, int, NULL, 0);
151module_param_array(drive2, int, NULL, 0);
152module_param_array(drive3, int, NULL, 0);
153
154#include "paride.h"
155#include "pseudo.h"
156
157#define PCD_RETRIES 5
158#define PCD_TMO 800
159#define PCD_DELAY 50
160#define PCD_READY_TMO 20
161#define PCD_RESET_TMO 100
162
163#define PCD_SPIN (1000000*PCD_TMO)/(HZ*PCD_DELAY)
164
165#define IDE_ERR 0x01
166#define IDE_DRQ 0x08
167#define IDE_READY 0x40
168#define IDE_BUSY 0x80
169
170static int pcd_open(struct cdrom_device_info *cdi, int purpose);
171static void pcd_release(struct cdrom_device_info *cdi);
172static int pcd_drive_status(struct cdrom_device_info *cdi, int slot_nr);
173static int pcd_media_changed(struct cdrom_device_info *cdi, int slot_nr);
174static int pcd_tray_move(struct cdrom_device_info *cdi, int position);
175static int pcd_lock_door(struct cdrom_device_info *cdi, int lock);
176static int pcd_drive_reset(struct cdrom_device_info *cdi);
177static int pcd_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn);
178static int pcd_audio_ioctl(struct cdrom_device_info *cdi,
179 unsigned int cmd, void *arg);
180static int pcd_packet(struct cdrom_device_info *cdi,
181 struct packet_command *cgc);
182
183static int pcd_detect(void);
184static void pcd_probe_capabilities(void);
185static void do_pcd_read_drq(void);
186static void do_pcd_request(struct request_queue * q);
187static void do_pcd_read(void);
188
189struct pcd_unit {
190 struct pi_adapter pia;
191 struct pi_adapter *pi;
192 int drive;
193 int last_sense;
194 int changed;
195 int present;
196 char *name;
197 struct cdrom_device_info info;
198 struct gendisk *disk;
199};
200
201static struct pcd_unit pcd[PCD_UNITS];
202
203static char pcd_scratch[64];
204static char pcd_buffer[2048];
205static int pcd_bufblk = -1;
206
207
208
209
210
211
212
213
214static struct pcd_unit *pcd_current;
215static struct request *pcd_req;
216static int pcd_retries;
217static int pcd_busy;
218static int pcd_sector;
219static int pcd_count;
220static char *pcd_buf;
221
222
223
224static int pcd_block_open(struct block_device *bdev, fmode_t mode)
225{
226 struct pcd_unit *cd = bdev->bd_disk->private_data;
227 return cdrom_open(&cd->info, bdev, mode);
228}
229
230static int pcd_block_release(struct gendisk *disk, fmode_t mode)
231{
232 struct pcd_unit *cd = disk->private_data;
233 cdrom_release(&cd->info, mode);
234 return 0;
235}
236
237static int pcd_block_ioctl(struct block_device *bdev, fmode_t mode,
238 unsigned cmd, unsigned long arg)
239{
240 struct pcd_unit *cd = bdev->bd_disk->private_data;
241 return cdrom_ioctl(&cd->info, bdev, mode, cmd, arg);
242}
243
244static int pcd_block_media_changed(struct gendisk *disk)
245{
246 struct pcd_unit *cd = disk->private_data;
247 return cdrom_media_changed(&cd->info);
248}
249
250static const struct block_device_operations pcd_bdops = {
251 .owner = THIS_MODULE,
252 .open = pcd_block_open,
253 .release = pcd_block_release,
254 .locked_ioctl = pcd_block_ioctl,
255 .media_changed = pcd_block_media_changed,
256};
257
258static struct cdrom_device_ops pcd_dops = {
259 .open = pcd_open,
260 .release = pcd_release,
261 .drive_status = pcd_drive_status,
262 .media_changed = pcd_media_changed,
263 .tray_move = pcd_tray_move,
264 .lock_door = pcd_lock_door,
265 .get_mcn = pcd_get_mcn,
266 .reset = pcd_drive_reset,
267 .audio_ioctl = pcd_audio_ioctl,
268 .generic_packet = pcd_packet,
269 .capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK |
270 CDC_MCN | CDC_MEDIA_CHANGED | CDC_RESET |
271 CDC_PLAY_AUDIO | CDC_GENERIC_PACKET | CDC_CD_R |
272 CDC_CD_RW,
273};
274
275static void pcd_init_units(void)
276{
277 struct pcd_unit *cd;
278 int unit;
279
280 pcd_drive_count = 0;
281 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
282 struct gendisk *disk = alloc_disk(1);
283 if (!disk)
284 continue;
285 cd->disk = disk;
286 cd->pi = &cd->pia;
287 cd->present = 0;
288 cd->last_sense = 0;
289 cd->changed = 1;
290 cd->drive = (*drives[unit])[D_SLV];
291 if ((*drives[unit])[D_PRT])
292 pcd_drive_count++;
293
294 cd->name = &cd->info.name[0];
295 snprintf(cd->name, sizeof(cd->info.name), "%s%d", name, unit);
296 cd->info.ops = &pcd_dops;
297 cd->info.handle = cd;
298 cd->info.speed = 0;
299 cd->info.capacity = 1;
300 cd->info.mask = 0;
301 disk->major = major;
302 disk->first_minor = unit;
303 strcpy(disk->disk_name, cd->name);
304 disk->fops = &pcd_bdops;
305 }
306}
307
308static int pcd_open(struct cdrom_device_info *cdi, int purpose)
309{
310 struct pcd_unit *cd = cdi->handle;
311 if (!cd->present)
312 return -ENODEV;
313 return 0;
314}
315
316static void pcd_release(struct cdrom_device_info *cdi)
317{
318}
319
320static inline int status_reg(struct pcd_unit *cd)
321{
322 return pi_read_regr(cd->pi, 1, 6);
323}
324
325static inline int read_reg(struct pcd_unit *cd, int reg)
326{
327 return pi_read_regr(cd->pi, 0, reg);
328}
329
330static inline void write_reg(struct pcd_unit *cd, int reg, int val)
331{
332 pi_write_regr(cd->pi, 0, reg, val);
333}
334
335static int pcd_wait(struct pcd_unit *cd, int go, int stop, char *fun, char *msg)
336{
337 int j, r, e, s, p;
338
339 j = 0;
340 while ((((r = status_reg(cd)) & go) || (stop && (!(r & stop))))
341 && (j++ < PCD_SPIN))
342 udelay(PCD_DELAY);
343
344 if ((r & (IDE_ERR & stop)) || (j >= PCD_SPIN)) {
345 s = read_reg(cd, 7);
346 e = read_reg(cd, 1);
347 p = read_reg(cd, 2);
348 if (j >= PCD_SPIN)
349 e |= 0x100;
350 if (fun)
351 printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x"
352 " loop=%d phase=%d\n",
353 cd->name, fun, msg, r, s, e, j, p);
354 return (s << 8) + r;
355 }
356 return 0;
357}
358
359static int pcd_command(struct pcd_unit *cd, char *cmd, int dlen, char *fun)
360{
361 pi_connect(cd->pi);
362
363 write_reg(cd, 6, 0xa0 + 0x10 * cd->drive);
364
365 if (pcd_wait(cd, IDE_BUSY | IDE_DRQ, 0, fun, "before command")) {
366 pi_disconnect(cd->pi);
367 return -1;
368 }
369
370 write_reg(cd, 4, dlen % 256);
371 write_reg(cd, 5, dlen / 256);
372 write_reg(cd, 7, 0xa0);
373
374 if (pcd_wait(cd, IDE_BUSY, IDE_DRQ, fun, "command DRQ")) {
375 pi_disconnect(cd->pi);
376 return -1;
377 }
378
379 if (read_reg(cd, 2) != 1) {
380 printk("%s: %s: command phase error\n", cd->name, fun);
381 pi_disconnect(cd->pi);
382 return -1;
383 }
384
385 pi_write_block(cd->pi, cmd, 12);
386
387 return 0;
388}
389
390static int pcd_completion(struct pcd_unit *cd, char *buf, char *fun)
391{
392 int r, d, p, n, k, j;
393
394 r = -1;
395 k = 0;
396 j = 0;
397
398 if (!pcd_wait(cd, IDE_BUSY, IDE_DRQ | IDE_READY | IDE_ERR,
399 fun, "completion")) {
400 r = 0;
401 while (read_reg(cd, 7) & IDE_DRQ) {
402 d = read_reg(cd, 4) + 256 * read_reg(cd, 5);
403 n = (d + 3) & 0xfffc;
404 p = read_reg(cd, 2) & 3;
405
406 if ((p == 2) && (n > 0) && (j == 0)) {
407 pi_read_block(cd->pi, buf, n);
408 if (verbose > 1)
409 printk("%s: %s: Read %d bytes\n",
410 cd->name, fun, n);
411 r = 0;
412 j++;
413 } else {
414 if (verbose > 1)
415 printk
416 ("%s: %s: Unexpected phase %d, d=%d, k=%d\n",
417 cd->name, fun, p, d, k);
418 if (verbose < 2)
419 printk_once(
420 "%s: WARNING: ATAPI phase errors\n",
421 cd->name);
422 mdelay(1);
423 }
424 if (k++ > PCD_TMO) {
425 printk("%s: Stuck DRQ\n", cd->name);
426 break;
427 }
428 if (pcd_wait
429 (cd, IDE_BUSY, IDE_DRQ | IDE_READY | IDE_ERR, fun,
430 "completion")) {
431 r = -1;
432 break;
433 }
434 }
435 }
436
437 pi_disconnect(cd->pi);
438
439 return r;
440}
441
442static void pcd_req_sense(struct pcd_unit *cd, char *fun)
443{
444 char rs_cmd[12] = { 0x03, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0 };
445 char buf[16];
446 int r, c;
447
448 r = pcd_command(cd, rs_cmd, 16, "Request sense");
449 mdelay(1);
450 if (!r)
451 pcd_completion(cd, buf, "Request sense");
452
453 cd->last_sense = -1;
454 c = 2;
455 if (!r) {
456 if (fun)
457 printk("%s: %s: Sense key: %x, ASC: %x, ASQ: %x\n",
458 cd->name, fun, buf[2] & 0xf, buf[12], buf[13]);
459 c = buf[2] & 0xf;
460 cd->last_sense =
461 c | ((buf[12] & 0xff) << 8) | ((buf[13] & 0xff) << 16);
462 }
463 if ((c == 2) || (c == 6))
464 cd->changed = 1;
465}
466
467static int pcd_atapi(struct pcd_unit *cd, char *cmd, int dlen, char *buf, char *fun)
468{
469 int r;
470
471 r = pcd_command(cd, cmd, dlen, fun);
472 mdelay(1);
473 if (!r)
474 r = pcd_completion(cd, buf, fun);
475 if (r)
476 pcd_req_sense(cd, fun);
477
478 return r;
479}
480
481static int pcd_packet(struct cdrom_device_info *cdi, struct packet_command *cgc)
482{
483 return pcd_atapi(cdi->handle, cgc->cmd, cgc->buflen, cgc->buffer,
484 "generic packet");
485}
486
487#define DBMSG(msg) ((verbose>1)?(msg):NULL)
488
489static int pcd_media_changed(struct cdrom_device_info *cdi, int slot_nr)
490{
491 struct pcd_unit *cd = cdi->handle;
492 int res = cd->changed;
493 if (res)
494 cd->changed = 0;
495 return res;
496}
497
498static int pcd_lock_door(struct cdrom_device_info *cdi, int lock)
499{
500 char un_cmd[12] = { 0x1e, 0, 0, 0, lock, 0, 0, 0, 0, 0, 0, 0 };
501
502 return pcd_atapi(cdi->handle, un_cmd, 0, pcd_scratch,
503 lock ? "lock door" : "unlock door");
504}
505
506static int pcd_tray_move(struct cdrom_device_info *cdi, int position)
507{
508 char ej_cmd[12] = { 0x1b, 0, 0, 0, 3 - position, 0, 0, 0, 0, 0, 0, 0 };
509
510 return pcd_atapi(cdi->handle, ej_cmd, 0, pcd_scratch,
511 position ? "eject" : "close tray");
512}
513
514static void pcd_sleep(int cs)
515{
516 schedule_timeout_interruptible(cs);
517}
518
519static int pcd_reset(struct pcd_unit *cd)
520{
521 int i, k, flg;
522 int expect[5] = { 1, 1, 1, 0x14, 0xeb };
523
524 pi_connect(cd->pi);
525 write_reg(cd, 6, 0xa0 + 0x10 * cd->drive);
526 write_reg(cd, 7, 8);
527
528 pcd_sleep(20 * HZ / 1000);
529
530 k = 0;
531 while ((k++ < PCD_RESET_TMO) && (status_reg(cd) & IDE_BUSY))
532 pcd_sleep(HZ / 10);
533
534 flg = 1;
535 for (i = 0; i < 5; i++)
536 flg &= (read_reg(cd, i + 1) == expect[i]);
537
538 if (verbose) {
539 printk("%s: Reset (%d) signature = ", cd->name, k);
540 for (i = 0; i < 5; i++)
541 printk("%3x", read_reg(cd, i + 1));
542 if (!flg)
543 printk(" (incorrect)");
544 printk("\n");
545 }
546
547 pi_disconnect(cd->pi);
548 return flg - 1;
549}
550
551static int pcd_drive_reset(struct cdrom_device_info *cdi)
552{
553 return pcd_reset(cdi->handle);
554}
555
556static int pcd_ready_wait(struct pcd_unit *cd, int tmo)
557{
558 char tr_cmd[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
559 int k, p;
560
561 k = 0;
562 while (k < tmo) {
563 cd->last_sense = 0;
564 pcd_atapi(cd, tr_cmd, 0, NULL, DBMSG("test unit ready"));
565 p = cd->last_sense;
566 if (!p)
567 return 0;
568 if (!(((p & 0xffff) == 0x0402) || ((p & 0xff) == 6)))
569 return p;
570 k++;
571 pcd_sleep(HZ);
572 }
573 return 0x000020;
574}
575
576static int pcd_drive_status(struct cdrom_device_info *cdi, int slot_nr)
577{
578 char rc_cmd[12] = { 0x25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
579 struct pcd_unit *cd = cdi->handle;
580
581 if (pcd_ready_wait(cd, PCD_READY_TMO))
582 return CDS_DRIVE_NOT_READY;
583 if (pcd_atapi(cd, rc_cmd, 8, pcd_scratch, DBMSG("check media")))
584 return CDS_NO_DISC;
585 return CDS_DISC_OK;
586}
587
588static int pcd_identify(struct pcd_unit *cd, char *id)
589{
590 int k, s;
591 char id_cmd[12] = { 0x12, 0, 0, 0, 36, 0, 0, 0, 0, 0, 0, 0 };
592
593 pcd_bufblk = -1;
594
595 s = pcd_atapi(cd, id_cmd, 36, pcd_buffer, "identify");
596
597 if (s)
598 return -1;
599 if ((pcd_buffer[0] & 0x1f) != 5) {
600 if (verbose)
601 printk("%s: %s is not a CD-ROM\n",
602 cd->name, cd->drive ? "Slave" : "Master");
603 return -1;
604 }
605 memcpy(id, pcd_buffer + 16, 16);
606 id[16] = 0;
607 k = 16;
608 while ((k >= 0) && (id[k] <= 0x20)) {
609 id[k] = 0;
610 k--;
611 }
612
613 printk("%s: %s: %s\n", cd->name, cd->drive ? "Slave" : "Master", id);
614
615 return 0;
616}
617
618
619
620
621
622static int pcd_probe(struct pcd_unit *cd, int ms, char *id)
623{
624 if (ms == -1) {
625 for (cd->drive = 0; cd->drive <= 1; cd->drive++)
626 if (!pcd_reset(cd) && !pcd_identify(cd, id))
627 return 0;
628 } else {
629 cd->drive = ms;
630 if (!pcd_reset(cd) && !pcd_identify(cd, id))
631 return 0;
632 }
633 return -1;
634}
635
636static void pcd_probe_capabilities(void)
637{
638 int unit, r;
639 char buffer[32];
640 char cmd[12] = { 0x5a, 1 << 3, 0x2a, 0, 0, 0, 0, 18, 0, 0, 0, 0 };
641 struct pcd_unit *cd;
642
643 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
644 if (!cd->present)
645 continue;
646 r = pcd_atapi(cd, cmd, 18, buffer, "mode sense capabilities");
647 if (r)
648 continue;
649
650 if ((buffer[11] & 1) == 0)
651 cd->info.mask |= CDC_CD_R;
652 if ((buffer[11] & 2) == 0)
653 cd->info.mask |= CDC_CD_RW;
654 if ((buffer[12] & 1) == 0)
655 cd->info.mask |= CDC_PLAY_AUDIO;
656 if ((buffer[14] & 1) == 0)
657 cd->info.mask |= CDC_LOCK;
658 if ((buffer[14] & 8) == 0)
659 cd->info.mask |= CDC_OPEN_TRAY;
660 if ((buffer[14] >> 6) == 0)
661 cd->info.mask |= CDC_CLOSE_TRAY;
662 }
663}
664
665static int pcd_detect(void)
666{
667 char id[18];
668 int k, unit;
669 struct pcd_unit *cd;
670
671 printk("%s: %s version %s, major %d, nice %d\n",
672 name, name, PCD_VERSION, major, nice);
673
674 k = 0;
675 if (pcd_drive_count == 0) {
676 cd = pcd;
677 if (pi_init(cd->pi, 1, -1, -1, -1, -1, -1, pcd_buffer,
678 PI_PCD, verbose, cd->name)) {
679 if (!pcd_probe(cd, -1, id) && cd->disk) {
680 cd->present = 1;
681 k++;
682 } else
683 pi_release(cd->pi);
684 }
685 } else {
686 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
687 int *conf = *drives[unit];
688 if (!conf[D_PRT])
689 continue;
690 if (!pi_init(cd->pi, 0, conf[D_PRT], conf[D_MOD],
691 conf[D_UNI], conf[D_PRO], conf[D_DLY],
692 pcd_buffer, PI_PCD, verbose, cd->name))
693 continue;
694 if (!pcd_probe(cd, conf[D_SLV], id) && cd->disk) {
695 cd->present = 1;
696 k++;
697 } else
698 pi_release(cd->pi);
699 }
700 }
701 if (k)
702 return 0;
703
704 printk("%s: No CD-ROM drive found\n", name);
705 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++)
706 put_disk(cd->disk);
707 return -1;
708}
709
710
711static struct request_queue *pcd_queue;
712
713static void do_pcd_request(struct request_queue * q)
714{
715 if (pcd_busy)
716 return;
717 while (1) {
718 if (!pcd_req) {
719 pcd_req = blk_fetch_request(q);
720 if (!pcd_req)
721 return;
722 }
723
724 if (rq_data_dir(pcd_req) == READ) {
725 struct pcd_unit *cd = pcd_req->rq_disk->private_data;
726 if (cd != pcd_current)
727 pcd_bufblk = -1;
728 pcd_current = cd;
729 pcd_sector = blk_rq_pos(pcd_req);
730 pcd_count = blk_rq_cur_sectors(pcd_req);
731 pcd_buf = pcd_req->buffer;
732 pcd_busy = 1;
733 ps_set_intr(do_pcd_read, NULL, 0, nice);
734 return;
735 } else {
736 __blk_end_request_all(pcd_req, -EIO);
737 pcd_req = NULL;
738 }
739 }
740}
741
742static inline void next_request(int err)
743{
744 unsigned long saved_flags;
745
746 spin_lock_irqsave(&pcd_lock, saved_flags);
747 if (!__blk_end_request_cur(pcd_req, err))
748 pcd_req = NULL;
749 pcd_busy = 0;
750 do_pcd_request(pcd_queue);
751 spin_unlock_irqrestore(&pcd_lock, saved_flags);
752}
753
754static int pcd_ready(void)
755{
756 return (((status_reg(pcd_current) & (IDE_BUSY | IDE_DRQ)) == IDE_DRQ));
757}
758
759static void pcd_transfer(void)
760{
761
762 while (pcd_count && (pcd_sector / 4 == pcd_bufblk)) {
763 int o = (pcd_sector % 4) * 512;
764 memcpy(pcd_buf, pcd_buffer + o, 512);
765 pcd_count--;
766 pcd_buf += 512;
767 pcd_sector++;
768 }
769}
770
771static void pcd_start(void)
772{
773 int b, i;
774 char rd_cmd[12] = { 0xa8, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 };
775
776 pcd_bufblk = pcd_sector / 4;
777 b = pcd_bufblk;
778 for (i = 0; i < 4; i++) {
779 rd_cmd[5 - i] = b & 0xff;
780 b = b >> 8;
781 }
782
783 if (pcd_command(pcd_current, rd_cmd, 2048, "read block")) {
784 pcd_bufblk = -1;
785 next_request(-EIO);
786 return;
787 }
788
789 mdelay(1);
790
791 ps_set_intr(do_pcd_read_drq, pcd_ready, PCD_TMO, nice);
792}
793
794static void do_pcd_read(void)
795{
796 pcd_busy = 1;
797 pcd_retries = 0;
798 pcd_transfer();
799 if (!pcd_count) {
800 next_request(0);
801 return;
802 }
803
804 pi_do_claimed(pcd_current->pi, pcd_start);
805}
806
807static void do_pcd_read_drq(void)
808{
809 unsigned long saved_flags;
810
811 if (pcd_completion(pcd_current, pcd_buffer, "read block")) {
812 if (pcd_retries < PCD_RETRIES) {
813 mdelay(1);
814 pcd_retries++;
815 pi_do_claimed(pcd_current->pi, pcd_start);
816 return;
817 }
818 pcd_bufblk = -1;
819 next_request(-EIO);
820 return;
821 }
822
823 do_pcd_read();
824 spin_lock_irqsave(&pcd_lock, saved_flags);
825 do_pcd_request(pcd_queue);
826 spin_unlock_irqrestore(&pcd_lock, saved_flags);
827}
828
829
830
831static int pcd_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
832{
833 struct pcd_unit *cd = cdi->handle;
834
835 switch (cmd) {
836
837 case CDROMREADTOCHDR:
838
839 {
840 char cmd[12] =
841 { GPCMD_READ_TOC_PMA_ATIP, 0, 0, 0, 0, 0, 0, 0, 12,
842 0, 0, 0 };
843 struct cdrom_tochdr *tochdr =
844 (struct cdrom_tochdr *) arg;
845 char buffer[32];
846 int r;
847
848 r = pcd_atapi(cd, cmd, 12, buffer, "read toc header");
849
850 tochdr->cdth_trk0 = buffer[2];
851 tochdr->cdth_trk1 = buffer[3];
852
853 return r ? -EIO : 0;
854 }
855
856 case CDROMREADTOCENTRY:
857
858 {
859 char cmd[12] =
860 { GPCMD_READ_TOC_PMA_ATIP, 0, 0, 0, 0, 0, 0, 0, 12,
861 0, 0, 0 };
862
863 struct cdrom_tocentry *tocentry =
864 (struct cdrom_tocentry *) arg;
865 unsigned char buffer[32];
866 int r;
867
868 cmd[1] =
869 (tocentry->cdte_format == CDROM_MSF ? 0x02 : 0);
870 cmd[6] = tocentry->cdte_track;
871
872 r = pcd_atapi(cd, cmd, 12, buffer, "read toc entry");
873
874 tocentry->cdte_ctrl = buffer[5] & 0xf;
875 tocentry->cdte_adr = buffer[5] >> 4;
876 tocentry->cdte_datamode =
877 (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
878 if (tocentry->cdte_format == CDROM_MSF) {
879 tocentry->cdte_addr.msf.minute = buffer[9];
880 tocentry->cdte_addr.msf.second = buffer[10];
881 tocentry->cdte_addr.msf.frame = buffer[11];
882 } else
883 tocentry->cdte_addr.lba =
884 (((((buffer[8] << 8) + buffer[9]) << 8)
885 + buffer[10]) << 8) + buffer[11];
886
887 return r ? -EIO : 0;
888 }
889
890 default:
891
892 return -ENOSYS;
893 }
894}
895
896static int pcd_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
897{
898 char cmd[12] =
899 { GPCMD_READ_SUBCHANNEL, 0, 0x40, 2, 0, 0, 0, 0, 24, 0, 0, 0 };
900 char buffer[32];
901
902 if (pcd_atapi(cdi->handle, cmd, 24, buffer, "get mcn"))
903 return -EIO;
904
905 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
906 mcn->medium_catalog_number[13] = 0;
907
908 return 0;
909}
910
911static int __init pcd_init(void)
912{
913 struct pcd_unit *cd;
914 int unit;
915
916 if (disable)
917 return -EINVAL;
918
919 pcd_init_units();
920
921 if (pcd_detect())
922 return -ENODEV;
923
924
925 pcd_probe_capabilities();
926
927 if (register_blkdev(major, name)) {
928 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++)
929 put_disk(cd->disk);
930 return -EBUSY;
931 }
932
933 pcd_queue = blk_init_queue(do_pcd_request, &pcd_lock);
934 if (!pcd_queue) {
935 unregister_blkdev(major, name);
936 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++)
937 put_disk(cd->disk);
938 return -ENOMEM;
939 }
940
941 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
942 if (cd->present) {
943 register_cdrom(&cd->info);
944 cd->disk->private_data = cd;
945 cd->disk->queue = pcd_queue;
946 add_disk(cd->disk);
947 }
948 }
949
950 return 0;
951}
952
953static void __exit pcd_exit(void)
954{
955 struct pcd_unit *cd;
956 int unit;
957
958 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
959 if (cd->present) {
960 del_gendisk(cd->disk);
961 pi_release(cd->pi);
962 unregister_cdrom(&cd->info);
963 }
964 put_disk(cd->disk);
965 }
966 blk_cleanup_queue(pcd_queue);
967 unregister_blkdev(major, name);
968}
969
970MODULE_LICENSE("GPL");
971module_init(pcd_init)
972module_exit(pcd_exit)
973