2 pcd.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
3 Under the terms of the GNU General Public License.
5 This is a high-level driver for parallel port ATAPI CD-ROM
6 drives based on chips supported by the paride module.
8 By default, the driver will autoprobe for a single parallel
9 port ATAPI CD-ROM drive, but if their individual parameters are
10 specified, the driver can handle up to 4 drives.
12 The behaviour of the pcd driver can be altered by setting
13 some parameters from the insmod command line. The following
14 parameters are adjustable:
16 drive0 These four arguments can be arrays of
17 drive1 1-6 integers as follows:
19 drive3 <prt>,<pro>,<uni>,<mod>,<slv>,<dly>
23 <prt> is the base of the parallel port address for
24 the corresponding drive. (required)
26 <pro> is the protocol number for the adapter that
27 supports this drive. These numbers are
28 logged by 'paride' when the protocol modules
29 are initialised. (0 if not given)
31 <uni> for those adapters that support chained
32 devices, this is the unit selector for the
33 chain of devices on the given port. It should
34 be zero for devices that don't support chaining.
37 <mod> this can be -1 to choose the best mode, or one
38 of the mode numbers supported by the adapter.
41 <slv> ATAPI CD-ROMs can be jumpered to master or slave.
42 Set this to 0 to choose the master drive, 1 to
43 choose the slave, -1 (the default) to choose the
46 <dly> some parallel ports require the driver to
47 go more slowly. -1 sets a default value that
48 should work with the chosen protocol. Otherwise,
49 set this to a small integer, the larger it is
50 the slower the port i/o. In some cases, setting
51 this to zero will speed up the device. (default -1)
53 major You may use this parameter to override the
54 default major number (46) that this driver
55 will use. Be sure to change the device
58 name This parameter is a character string that
59 contains the name the kernel will use for this
60 device (in /proc output, for instance).
63 verbose This parameter controls the amount of logging
64 that the driver will do. Set it to 0 for
65 normal operation, 1 to see autoprobe progress
66 messages, or 2 to see additional debugging
69 nice This parameter controls the driver's use of
70 idle CPU time, at the expense of some speed.
72 If this driver is built into the kernel, you can use the
73 following kernel command line parameters, with the same values
74 as the corresponding module parameters listed above:
82 In addition, you can use the parameter pcd.disable to disable
89 1.01 GRG 1998.01.24 Added test unit ready support
90 1.02 GRG 1998.05.06 Changes to pcd_completion, ready_wait,
91 and loosen interpretation of ATAPI
92 standard for clearing error status.
93 Use spinlocks. Eliminate sti().
94 1.03 GRG 1998.06.16 Eliminated an Ugh
95 1.04 GRG 1998.08.15 Added extra debugging, improvements to
96 pcd_completion, use HZ in loop timing
97 1.05 GRG 1998.08.16 Conformed to "Uniform CD-ROM" standard
98 1.06 GRG 1998.08.19 Added audio ioctl support
99 1.07 GRG 1998.09.24 Increased reset timeout, added jumbo support
103 #define PCD_VERSION "1.07"
105 #define PCD_NAME "pcd"
108 /* Here are things one can override from the insmod command.
109 Most are autoprobed by paride unless set here. Verbose is off
114 static int verbose = 0;
115 static int major = PCD_MAJOR;
116 static char *name = PCD_NAME;
118 static int disable = 0;
120 static int drive0[6] = { 0, 0, 0, -1, -1, -1 };
121 static int drive1[6] = { 0, 0, 0, -1, -1, -1 };
122 static int drive2[6] = { 0, 0, 0, -1, -1, -1 };
123 static int drive3[6] = { 0, 0, 0, -1, -1, -1 };
125 static int (*drives[4])[6] = {&drive0, &drive1, &drive2, &drive3};
126 static int pcd_drive_count;
128 enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY};
130 /* end of parameters */
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/blk-mq.h>
141 #include <linux/mutex.h>
142 #include <linux/uaccess.h>
144 static DEFINE_MUTEX(pcd_mutex);
145 static DEFINE_SPINLOCK(pcd_lock);
147 module_param(verbose, int, 0644);
148 module_param(major, int, 0);
149 module_param(name, charp, 0);
150 module_param(nice, int, 0);
151 module_param_array(drive0, int, NULL, 0);
152 module_param_array(drive1, int, NULL, 0);
153 module_param_array(drive2, int, NULL, 0);
154 module_param_array(drive3, int, NULL, 0);
159 #define PCD_RETRIES 5
160 #define PCD_TMO 800 /* timeout in jiffies */
161 #define PCD_DELAY 50 /* spin delay in uS */
162 #define PCD_READY_TMO 20 /* in seconds */
163 #define PCD_RESET_TMO 100 /* in tenths of a second */
165 #define PCD_SPIN (1000000*PCD_TMO)/(HZ*PCD_DELAY)
169 #define IDE_READY 0x40
170 #define IDE_BUSY 0x80
172 static int pcd_open(struct cdrom_device_info *cdi, int purpose);
173 static void pcd_release(struct cdrom_device_info *cdi);
174 static int pcd_drive_status(struct cdrom_device_info *cdi, int slot_nr);
175 static unsigned int pcd_check_events(struct cdrom_device_info *cdi,
176 unsigned int clearing, int slot_nr);
177 static int pcd_tray_move(struct cdrom_device_info *cdi, int position);
178 static int pcd_lock_door(struct cdrom_device_info *cdi, int lock);
179 static int pcd_drive_reset(struct cdrom_device_info *cdi);
180 static int pcd_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn);
181 static int pcd_audio_ioctl(struct cdrom_device_info *cdi,
182 unsigned int cmd, void *arg);
183 static int pcd_packet(struct cdrom_device_info *cdi,
184 struct packet_command *cgc);
186 static int pcd_detect(void);
187 static void pcd_probe_capabilities(void);
188 static void do_pcd_read_drq(void);
189 static blk_status_t pcd_queue_rq(struct blk_mq_hw_ctx *hctx,
190 const struct blk_mq_queue_data *bd);
191 static void do_pcd_read(void);
194 struct pi_adapter pia; /* interface to paride layer */
195 struct pi_adapter *pi;
196 int drive; /* master/slave */
197 int last_sense; /* result of last request sense */
198 int changed; /* media change seen */
199 int present; /* does this unit exist ? */
200 char *name; /* pcd0, pcd1, etc */
201 struct cdrom_device_info info; /* uniform cdrom interface */
202 struct gendisk *disk;
203 struct blk_mq_tag_set tag_set;
204 struct list_head rq_list;
207 static struct pcd_unit pcd[PCD_UNITS];
209 static char pcd_scratch[64];
210 static char pcd_buffer[2048]; /* raw block buffer */
211 static int pcd_bufblk = -1; /* block in buffer, in CD units,
212 -1 for nothing there. See also
216 /* the variables below are used mainly in the I/O request engine, which
217 processes only one request at a time.
220 static struct pcd_unit *pcd_current; /* current request's drive */
221 static struct request *pcd_req;
222 static int pcd_retries; /* retries on current request */
223 static int pcd_busy; /* request being processed ? */
224 static int pcd_sector; /* address of next requested sector */
225 static int pcd_count; /* number of blocks still to do */
226 static char *pcd_buf; /* buffer for request in progress */
227 static void *par_drv; /* reference of parport driver */
229 /* kernel glue structures */
231 static int pcd_block_open(struct block_device *bdev, fmode_t mode)
233 struct pcd_unit *cd = bdev->bd_disk->private_data;
236 check_disk_change(bdev);
238 mutex_lock(&pcd_mutex);
239 ret = cdrom_open(&cd->info, bdev, mode);
240 mutex_unlock(&pcd_mutex);
245 static void pcd_block_release(struct gendisk *disk, fmode_t mode)
247 struct pcd_unit *cd = disk->private_data;
248 mutex_lock(&pcd_mutex);
249 cdrom_release(&cd->info, mode);
250 mutex_unlock(&pcd_mutex);
253 static int pcd_block_ioctl(struct block_device *bdev, fmode_t mode,
254 unsigned cmd, unsigned long arg)
256 struct pcd_unit *cd = bdev->bd_disk->private_data;
259 mutex_lock(&pcd_mutex);
260 ret = cdrom_ioctl(&cd->info, bdev, mode, cmd, arg);
261 mutex_unlock(&pcd_mutex);
266 static unsigned int pcd_block_check_events(struct gendisk *disk,
267 unsigned int clearing)
269 struct pcd_unit *cd = disk->private_data;
270 return cdrom_check_events(&cd->info, clearing);
273 static const struct block_device_operations pcd_bdops = {
274 .owner = THIS_MODULE,
275 .open = pcd_block_open,
276 .release = pcd_block_release,
277 .ioctl = pcd_block_ioctl,
278 .check_events = pcd_block_check_events,
281 static const struct cdrom_device_ops pcd_dops = {
283 .release = pcd_release,
284 .drive_status = pcd_drive_status,
285 .check_events = pcd_check_events,
286 .tray_move = pcd_tray_move,
287 .lock_door = pcd_lock_door,
288 .get_mcn = pcd_get_mcn,
289 .reset = pcd_drive_reset,
290 .audio_ioctl = pcd_audio_ioctl,
291 .generic_packet = pcd_packet,
292 .capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK |
293 CDC_MCN | CDC_MEDIA_CHANGED | CDC_RESET |
294 CDC_PLAY_AUDIO | CDC_GENERIC_PACKET | CDC_CD_R |
298 static const struct blk_mq_ops pcd_mq_ops = {
299 .queue_rq = pcd_queue_rq,
302 static void pcd_init_units(void)
308 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
309 struct gendisk *disk = alloc_disk(1);
314 disk->queue = blk_mq_init_sq_queue(&cd->tag_set, &pcd_mq_ops,
315 1, BLK_MQ_F_SHOULD_MERGE);
316 if (IS_ERR(disk->queue)) {
321 INIT_LIST_HEAD(&cd->rq_list);
322 disk->queue->queuedata = cd;
323 blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
329 cd->drive = (*drives[unit])[D_SLV];
330 if ((*drives[unit])[D_PRT])
333 cd->name = &cd->info.name[0];
334 snprintf(cd->name, sizeof(cd->info.name), "%s%d", name, unit);
335 cd->info.ops = &pcd_dops;
336 cd->info.handle = cd;
338 cd->info.capacity = 1;
341 disk->first_minor = unit;
342 strcpy(disk->disk_name, cd->name); /* umm... */
343 disk->fops = &pcd_bdops;
344 disk->flags = GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
348 static int pcd_open(struct cdrom_device_info *cdi, int purpose)
350 struct pcd_unit *cd = cdi->handle;
356 static void pcd_release(struct cdrom_device_info *cdi)
360 static inline int status_reg(struct pcd_unit *cd)
362 return pi_read_regr(cd->pi, 1, 6);
365 static inline int read_reg(struct pcd_unit *cd, int reg)
367 return pi_read_regr(cd->pi, 0, reg);
370 static inline void write_reg(struct pcd_unit *cd, int reg, int val)
372 pi_write_regr(cd->pi, 0, reg, val);
375 static int pcd_wait(struct pcd_unit *cd, int go, int stop, char *fun, char *msg)
380 while ((((r = status_reg(cd)) & go) || (stop && (!(r & stop))))
384 if ((r & (IDE_ERR & stop)) || (j > PCD_SPIN)) {
391 printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x"
392 " loop=%d phase=%d\n",
393 cd->name, fun, msg, r, s, e, j, p);
399 static int pcd_command(struct pcd_unit *cd, char *cmd, int dlen, char *fun)
403 write_reg(cd, 6, 0xa0 + 0x10 * cd->drive);
405 if (pcd_wait(cd, IDE_BUSY | IDE_DRQ, 0, fun, "before command")) {
406 pi_disconnect(cd->pi);
410 write_reg(cd, 4, dlen % 256);
411 write_reg(cd, 5, dlen / 256);
412 write_reg(cd, 7, 0xa0); /* ATAPI packet command */
414 if (pcd_wait(cd, IDE_BUSY, IDE_DRQ, fun, "command DRQ")) {
415 pi_disconnect(cd->pi);
419 if (read_reg(cd, 2) != 1) {
420 printk("%s: %s: command phase error\n", cd->name, fun);
421 pi_disconnect(cd->pi);
425 pi_write_block(cd->pi, cmd, 12);
430 static int pcd_completion(struct pcd_unit *cd, char *buf, char *fun)
432 int r, d, p, n, k, j;
438 if (!pcd_wait(cd, IDE_BUSY, IDE_DRQ | IDE_READY | IDE_ERR,
439 fun, "completion")) {
441 while (read_reg(cd, 7) & IDE_DRQ) {
442 d = read_reg(cd, 4) + 256 * read_reg(cd, 5);
443 n = (d + 3) & 0xfffc;
444 p = read_reg(cd, 2) & 3;
446 if ((p == 2) && (n > 0) && (j == 0)) {
447 pi_read_block(cd->pi, buf, n);
449 printk("%s: %s: Read %d bytes\n",
456 ("%s: %s: Unexpected phase %d, d=%d, k=%d\n",
457 cd->name, fun, p, d, k);
460 "%s: WARNING: ATAPI phase errors\n",
465 printk("%s: Stuck DRQ\n", cd->name);
469 (cd, IDE_BUSY, IDE_DRQ | IDE_READY | IDE_ERR, fun,
477 pi_disconnect(cd->pi);
482 static void pcd_req_sense(struct pcd_unit *cd, char *fun)
484 char rs_cmd[12] = { 0x03, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0 };
488 r = pcd_command(cd, rs_cmd, 16, "Request sense");
491 pcd_completion(cd, buf, "Request sense");
497 printk("%s: %s: Sense key: %x, ASC: %x, ASQ: %x\n",
498 cd->name, fun, buf[2] & 0xf, buf[12], buf[13]);
501 c | ((buf[12] & 0xff) << 8) | ((buf[13] & 0xff) << 16);
503 if ((c == 2) || (c == 6))
507 static int pcd_atapi(struct pcd_unit *cd, char *cmd, int dlen, char *buf, char *fun)
511 r = pcd_command(cd, cmd, dlen, fun);
514 r = pcd_completion(cd, buf, fun);
516 pcd_req_sense(cd, fun);
521 static int pcd_packet(struct cdrom_device_info *cdi, struct packet_command *cgc)
523 return pcd_atapi(cdi->handle, cgc->cmd, cgc->buflen, cgc->buffer,
527 #define DBMSG(msg) ((verbose>1)?(msg):NULL)
529 static unsigned int pcd_check_events(struct cdrom_device_info *cdi,
530 unsigned int clearing, int slot_nr)
532 struct pcd_unit *cd = cdi->handle;
533 int res = cd->changed;
536 return res ? DISK_EVENT_MEDIA_CHANGE : 0;
539 static int pcd_lock_door(struct cdrom_device_info *cdi, int lock)
541 char un_cmd[12] = { 0x1e, 0, 0, 0, lock, 0, 0, 0, 0, 0, 0, 0 };
543 return pcd_atapi(cdi->handle, un_cmd, 0, pcd_scratch,
544 lock ? "lock door" : "unlock door");
547 static int pcd_tray_move(struct cdrom_device_info *cdi, int position)
549 char ej_cmd[12] = { 0x1b, 0, 0, 0, 3 - position, 0, 0, 0, 0, 0, 0, 0 };
551 return pcd_atapi(cdi->handle, ej_cmd, 0, pcd_scratch,
552 position ? "eject" : "close tray");
555 static void pcd_sleep(int cs)
557 schedule_timeout_interruptible(cs);
560 static int pcd_reset(struct pcd_unit *cd)
563 int expect[5] = { 1, 1, 1, 0x14, 0xeb };
566 write_reg(cd, 6, 0xa0 + 0x10 * cd->drive);
569 pcd_sleep(20 * HZ / 1000); /* delay a bit */
572 while ((k++ < PCD_RESET_TMO) && (status_reg(cd) & IDE_BUSY))
576 for (i = 0; i < 5; i++)
577 flg &= (read_reg(cd, i + 1) == expect[i]);
580 printk("%s: Reset (%d) signature = ", cd->name, k);
581 for (i = 0; i < 5; i++)
582 printk("%3x", read_reg(cd, i + 1));
584 printk(" (incorrect)");
588 pi_disconnect(cd->pi);
592 static int pcd_drive_reset(struct cdrom_device_info *cdi)
594 return pcd_reset(cdi->handle);
597 static int pcd_ready_wait(struct pcd_unit *cd, int tmo)
599 char tr_cmd[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
605 pcd_atapi(cd, tr_cmd, 0, NULL, DBMSG("test unit ready"));
609 if (!(((p & 0xffff) == 0x0402) || ((p & 0xff) == 6)))
614 return 0x000020; /* timeout */
617 static int pcd_drive_status(struct cdrom_device_info *cdi, int slot_nr)
619 char rc_cmd[12] = { 0x25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
620 struct pcd_unit *cd = cdi->handle;
622 if (pcd_ready_wait(cd, PCD_READY_TMO))
623 return CDS_DRIVE_NOT_READY;
624 if (pcd_atapi(cd, rc_cmd, 8, pcd_scratch, DBMSG("check media")))
629 static int pcd_identify(struct pcd_unit *cd, char *id)
632 char id_cmd[12] = { 0x12, 0, 0, 0, 36, 0, 0, 0, 0, 0, 0, 0 };
636 s = pcd_atapi(cd, id_cmd, 36, pcd_buffer, "identify");
640 if ((pcd_buffer[0] & 0x1f) != 5) {
642 printk("%s: %s is not a CD-ROM\n",
643 cd->name, cd->drive ? "Slave" : "Master");
646 memcpy(id, pcd_buffer + 16, 16);
649 while ((k >= 0) && (id[k] <= 0x20)) {
654 printk("%s: %s: %s\n", cd->name, cd->drive ? "Slave" : "Master", id);
660 * returns 0, with id set if drive is detected
661 * -1, if drive detection failed
663 static int pcd_probe(struct pcd_unit *cd, int ms, char *id)
666 for (cd->drive = 0; cd->drive <= 1; cd->drive++)
667 if (!pcd_reset(cd) && !pcd_identify(cd, id))
671 if (!pcd_reset(cd) && !pcd_identify(cd, id))
677 static void pcd_probe_capabilities(void)
681 char cmd[12] = { 0x5a, 1 << 3, 0x2a, 0, 0, 0, 0, 18, 0, 0, 0, 0 };
684 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
687 r = pcd_atapi(cd, cmd, 18, buffer, "mode sense capabilities");
690 /* we should now have the cap page */
691 if ((buffer[11] & 1) == 0)
692 cd->info.mask |= CDC_CD_R;
693 if ((buffer[11] & 2) == 0)
694 cd->info.mask |= CDC_CD_RW;
695 if ((buffer[12] & 1) == 0)
696 cd->info.mask |= CDC_PLAY_AUDIO;
697 if ((buffer[14] & 1) == 0)
698 cd->info.mask |= CDC_LOCK;
699 if ((buffer[14] & 8) == 0)
700 cd->info.mask |= CDC_OPEN_TRAY;
701 if ((buffer[14] >> 6) == 0)
702 cd->info.mask |= CDC_CLOSE_TRAY;
706 static int pcd_detect(void)
712 printk("%s: %s version %s, major %d, nice %d\n",
713 name, name, PCD_VERSION, major, nice);
715 par_drv = pi_register_driver(name);
717 pr_err("failed to register %s driver\n", name);
722 if (pcd_drive_count == 0) { /* nothing spec'd - so autoprobe for 1 */
724 if (pi_init(cd->pi, 1, -1, -1, -1, -1, -1, pcd_buffer,
725 PI_PCD, verbose, cd->name)) {
726 if (!pcd_probe(cd, -1, id) && cd->disk) {
733 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
734 int *conf = *drives[unit];
737 if (!pi_init(cd->pi, 0, conf[D_PRT], conf[D_MOD],
738 conf[D_UNI], conf[D_PRO], conf[D_DLY],
739 pcd_buffer, PI_PCD, verbose, cd->name))
741 if (!pcd_probe(cd, conf[D_SLV], id) && cd->disk) {
751 printk("%s: No CD-ROM drive found\n", name);
752 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
753 blk_cleanup_queue(cd->disk->queue);
754 cd->disk->queue = NULL;
755 blk_mq_free_tag_set(&cd->tag_set);
758 pi_unregister_driver(par_drv);
762 /* I/O request processing */
763 static int pcd_queue;
765 static int set_next_request(void)
768 int old_pos = pcd_queue;
771 cd = &pcd[pcd_queue];
772 if (++pcd_queue == PCD_UNITS)
774 if (cd->present && !list_empty(&cd->rq_list)) {
775 pcd_req = list_first_entry(&cd->rq_list, struct request,
777 list_del_init(&pcd_req->queuelist);
778 blk_mq_start_request(pcd_req);
781 } while (pcd_queue != old_pos);
783 return pcd_req != NULL;
786 static void pcd_request(void)
793 if (!pcd_req && !set_next_request())
796 cd = pcd_req->rq_disk->private_data;
797 if (cd != pcd_current)
800 pcd_sector = blk_rq_pos(pcd_req);
801 pcd_count = blk_rq_cur_sectors(pcd_req);
802 pcd_buf = bio_data(pcd_req->bio);
804 ps_set_intr(do_pcd_read, NULL, 0, nice);
807 static blk_status_t pcd_queue_rq(struct blk_mq_hw_ctx *hctx,
808 const struct blk_mq_queue_data *bd)
810 struct pcd_unit *cd = hctx->queue->queuedata;
812 if (rq_data_dir(bd->rq) != READ) {
813 blk_mq_start_request(bd->rq);
814 return BLK_STS_IOERR;
817 spin_lock_irq(&pcd_lock);
818 list_add_tail(&bd->rq->queuelist, &cd->rq_list);
820 spin_unlock_irq(&pcd_lock);
825 static inline void next_request(blk_status_t err)
827 unsigned long saved_flags;
829 spin_lock_irqsave(&pcd_lock, saved_flags);
830 if (!blk_update_request(pcd_req, err, blk_rq_cur_bytes(pcd_req))) {
831 __blk_mq_end_request(pcd_req, err);
836 spin_unlock_irqrestore(&pcd_lock, saved_flags);
839 static int pcd_ready(void)
841 return (((status_reg(pcd_current) & (IDE_BUSY | IDE_DRQ)) == IDE_DRQ));
844 static void pcd_transfer(void)
847 while (pcd_count && (pcd_sector / 4 == pcd_bufblk)) {
848 int o = (pcd_sector % 4) * 512;
849 memcpy(pcd_buf, pcd_buffer + o, 512);
856 static void pcd_start(void)
859 char rd_cmd[12] = { 0xa8, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 };
861 pcd_bufblk = pcd_sector / 4;
863 for (i = 0; i < 4; i++) {
864 rd_cmd[5 - i] = b & 0xff;
868 if (pcd_command(pcd_current, rd_cmd, 2048, "read block")) {
870 next_request(BLK_STS_IOERR);
876 ps_set_intr(do_pcd_read_drq, pcd_ready, PCD_TMO, nice);
879 static void do_pcd_read(void)
889 pi_do_claimed(pcd_current->pi, pcd_start);
892 static void do_pcd_read_drq(void)
894 unsigned long saved_flags;
896 if (pcd_completion(pcd_current, pcd_buffer, "read block")) {
897 if (pcd_retries < PCD_RETRIES) {
900 pi_do_claimed(pcd_current->pi, pcd_start);
904 next_request(BLK_STS_IOERR);
909 spin_lock_irqsave(&pcd_lock, saved_flags);
911 spin_unlock_irqrestore(&pcd_lock, saved_flags);
914 /* the audio_ioctl stuff is adapted from sr_ioctl.c */
916 static int pcd_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
918 struct pcd_unit *cd = cdi->handle;
922 case CDROMREADTOCHDR:
926 { GPCMD_READ_TOC_PMA_ATIP, 0, 0, 0, 0, 0, 0, 0, 12,
928 struct cdrom_tochdr *tochdr =
929 (struct cdrom_tochdr *) arg;
933 r = pcd_atapi(cd, cmd, 12, buffer, "read toc header");
935 tochdr->cdth_trk0 = buffer[2];
936 tochdr->cdth_trk1 = buffer[3];
941 case CDROMREADTOCENTRY:
945 { GPCMD_READ_TOC_PMA_ATIP, 0, 0, 0, 0, 0, 0, 0, 12,
948 struct cdrom_tocentry *tocentry =
949 (struct cdrom_tocentry *) arg;
950 unsigned char buffer[32];
954 (tocentry->cdte_format == CDROM_MSF ? 0x02 : 0);
955 cmd[6] = tocentry->cdte_track;
957 r = pcd_atapi(cd, cmd, 12, buffer, "read toc entry");
959 tocentry->cdte_ctrl = buffer[5] & 0xf;
960 tocentry->cdte_adr = buffer[5] >> 4;
961 tocentry->cdte_datamode =
962 (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
963 if (tocentry->cdte_format == CDROM_MSF) {
964 tocentry->cdte_addr.msf.minute = buffer[9];
965 tocentry->cdte_addr.msf.second = buffer[10];
966 tocentry->cdte_addr.msf.frame = buffer[11];
968 tocentry->cdte_addr.lba =
969 (((((buffer[8] << 8) + buffer[9]) << 8)
970 + buffer[10]) << 8) + buffer[11];
981 static int pcd_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
984 { GPCMD_READ_SUBCHANNEL, 0, 0x40, 2, 0, 0, 0, 0, 24, 0, 0, 0 };
987 if (pcd_atapi(cdi->handle, cmd, 24, buffer, "get mcn"))
990 memcpy(mcn->medium_catalog_number, buffer + 9, 13);
991 mcn->medium_catalog_number[13] = 0;
996 static int __init pcd_init(void)
1009 /* get the atapi capabilities page */
1010 pcd_probe_capabilities();
1012 if (register_blkdev(major, name)) {
1013 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++)
1018 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
1020 register_cdrom(&cd->info);
1021 cd->disk->private_data = cd;
1029 static void __exit pcd_exit(void)
1031 struct pcd_unit *cd;
1034 for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
1036 del_gendisk(cd->disk);
1038 unregister_cdrom(&cd->info);
1040 blk_cleanup_queue(cd->disk->queue);
1041 blk_mq_free_tag_set(&cd->tag_set);
1044 unregister_blkdev(major, name);
1045 pi_unregister_driver(par_drv);
1048 MODULE_LICENSE("GPL");
1049 module_init(pcd_init)
1050 module_exit(pcd_exit)