2 * Copyright 1993 by Holger Veit (data part)
3 * Copyright 1993 by Brian Moore (audio part)
4 * Changes Copyright 1993 by Gary Clark II
5 * Changes Copyright (C) 1994-1995 by Andrey A. Chernov, Moscow, Russia
7 * Rewrote probe routine to work on newer Mitsumi drives.
8 * Additional changes (C) 1994 by Jordan K. Hubbard
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This software was developed by Holger Veit and Brian Moore
23 * for use with "386BSD" and similar operating systems.
24 * "Similar operating systems" includes mainly non-profit oriented
25 * systems for research and education, including but not restricted to
26 * "NetBSD", "FreeBSD", "Mach" (by CMU).
27 * 4. Neither the name of the developer(s) nor the name "386BSD"
28 * may be used to endorse or promote products derived from this
29 * software without specific prior written permission.
31 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER(S) ``AS IS'' AND ANY
32 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
34 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE DEVELOPER(S) BE
35 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
36 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
37 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
38 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
39 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
40 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
41 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45 #include <sys/cdefs.h>
46 __FBSDID("$FreeBSD$");
47 static const char __used COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore";
49 #include <sys/param.h>
50 #include <sys/systm.h>
51 #include <sys/kernel.h>
53 #include <sys/fcntl.h>
59 #include <machine/bus.h>
60 #include <machine/resource.h>
63 #include <isa/isavar.h>
65 #include <dev/mcd/mcdreg.h>
66 #include <dev/mcd/mcdvar.h>
68 #define MCD_TRACE(format, args...) \
71 device_printf(sc->dev, "status=0x%02x: ", \
73 printf(format, ## args); \
80 #define MCDVALID 0x0001 /* parameters loaded */
81 #define MCDINIT 0x0002 /* device is init'd */
82 #define MCDNEWMODEL 0x0004 /* device is new model */
83 #define MCDLABEL 0x0008 /* label is read */
84 #define MCDPROBING 0x0010 /* probing */
85 #define MCDREADRAW 0x0020 /* read raw mode (2352 bytes) */
86 #define MCDVOLINFO 0x0040 /* already read volinfo */
87 #define MCDTOC 0x0080 /* already read toc */
88 #define MCDMBXBSY 0x0100 /* local mbx is busy */
91 #define MCDAUDIOBSY MCD_ST_AUDIOBSY /* playing audio */
92 #define MCDDSKCHNG MCD_ST_DSKCHNG /* sensed change of disk */
93 #define MCDDSKIN MCD_ST_DSKIN /* sensed disk in drive */
94 #define MCDDOOROPEN MCD_ST_DOOROPEN /* sensed door open */
96 /* These are apparently the different states a mitsumi can get up to */
97 #define MCDCDABSENT 0x0030
98 #define MCDCDPRESENT 0x0020
99 #define MCDSCLOSED 0x0080
100 #define MCDSOPEN 0x00a0
102 #define MCD_MD_UNKNOWN (-1)
104 #define MCD_TYPE_UNKNOWN 0
105 #define MCD_TYPE_LU002S 1
106 #define MCD_TYPE_LU005S 2
107 #define MCD_TYPE_LU006S 3
108 #define MCD_TYPE_FX001 4
109 #define MCD_TYPE_FX001D 5
111 /* reader state machine */
112 #define MCD_S_BEGIN 0
113 #define MCD_S_BEGIN1 1
114 #define MCD_S_WAITSTAT 2
115 #define MCD_S_WAITMODE 3
116 #define MCD_S_WAITREAD 4
119 static void mcd_start(struct mcd_softc *);
121 static void mcd_configure(struct mcd_softc *sc);
123 static int mcd_get(struct mcd_softc *, char *buf, int nmax);
124 static int mcd_setflags(struct mcd_softc *);
125 static int mcd_getstat(struct mcd_softc *,int sflg);
126 static int mcd_send(struct mcd_softc *, int cmd,int nretrys);
127 static void hsg2msf(int hsg, bcd_t *msf);
128 static int msf2hsg(bcd_t *msf, int relative);
129 static int mcd_volinfo(struct mcd_softc *);
130 static int mcd_waitrdy(struct mcd_softc *,int dly);
131 static void mcd_timeout(void *arg);
132 static void mcd_doread(struct mcd_softc *, int state, struct mcd_mbx *mbxin);
133 static void mcd_soft_reset(struct mcd_softc *);
134 static int mcd_hard_reset(struct mcd_softc *);
135 static int mcd_setmode(struct mcd_softc *, int mode);
136 static int mcd_getqchan(struct mcd_softc *, struct mcd_qchninfo *q);
137 static int mcd_subchan(struct mcd_softc *, struct ioc_read_subchannel *sc,
139 static int mcd_toc_header(struct mcd_softc *, struct ioc_toc_header *th);
140 static int mcd_read_toc(struct mcd_softc *);
141 static int mcd_toc_entrys(struct mcd_softc *, struct ioc_read_toc_entry *te);
143 static int mcd_toc_entry(struct mcd_softc *, struct ioc_read_toc_single_entry *te);
145 static int mcd_stop(struct mcd_softc *);
146 static int mcd_eject(struct mcd_softc *);
147 static int mcd_inject(struct mcd_softc *);
148 static int mcd_playtracks(struct mcd_softc *, struct ioc_play_track *pt);
149 static int mcd_play(struct mcd_softc *, struct mcd_read2 *pb);
150 static int mcd_playmsf(struct mcd_softc *, struct ioc_play_msf *pt);
151 static int mcd_playblocks(struct mcd_softc *, struct ioc_play_blocks *);
152 static int mcd_pause(struct mcd_softc *);
153 static int mcd_resume(struct mcd_softc *);
154 static int mcd_lock_door(struct mcd_softc *, int lock);
155 static int mcd_close_tray(struct mcd_softc *);
156 static int mcd_size(struct cdev *dev);
158 static d_open_t mcdopen;
159 static d_close_t mcdclose;
160 static d_ioctl_t mcdioctl;
161 static d_strategy_t mcdstrategy;
163 static struct cdevsw mcd_cdevsw = {
164 .d_version = D_VERSION,
169 .d_strategy = mcdstrategy,
175 #define MCD_RDRETRYS 8
177 #define CLOSE_TRAY_SECS 8
178 #define DISK_SENSE_SECS 3
182 #define RDELAY_WAITSTAT 300
183 #define RDELAY_WAITMODE 300
184 #define RDELAY_WAITREAD 800
187 #define DELAY_GETREPLY 5000000
190 mcd_attach(struct mcd_softc *sc)
194 unit = device_get_unit(sc->dev);
197 sc->data.flags |= MCDINIT;
199 bioq_init(&sc->data.head);
202 /* wire controller for interrupts and dma */
206 /* name filled in probe */
207 sc->mcd_dev_t = make_dev(&mcd_cdevsw, 8 * unit,
208 UID_ROOT, GID_OPERATOR, 0640, "mcd%d", unit);
210 sc->mcd_dev_t->si_drv1 = (void *)sc;
211 callout_init_mtx(&sc->timer, &sc->mtx, 0);
217 mcdopen(struct cdev *dev, int flags, int fmt, struct thread *td)
219 struct mcd_softc *sc;
222 sc = (struct mcd_softc *)dev->si_drv1;
224 /* invalidated in the meantime? mark all open part's invalid */
226 if (!(sc->data.flags & MCDVALID) && sc->data.openflags) {
231 if (mcd_getstat(sc, 1) == -1) {
236 if ( (sc->data.status & (MCDDSKCHNG|MCDDOOROPEN))
237 || !(sc->data.status & MCDDSKIN))
238 for (retry = 0; retry < DISK_SENSE_SECS * WAIT_FRAC; retry++) {
239 (void) mtx_sleep(sc, &sc->mtx, PSOCK | PCATCH,
240 "mcdsn1", hz/WAIT_FRAC);
241 if ((r = mcd_getstat(sc, 1)) == -1) {
249 if (sc->data.status & MCDDOOROPEN) {
251 device_printf(sc->dev, "door is open\n");
254 if (!(sc->data.status & MCDDSKIN)) {
256 device_printf(sc->dev, "no CD inside\n");
259 if (sc->data.status & MCDDSKCHNG) {
261 device_printf(sc->dev, "CD not sensed\n");
265 if (mcd_size(dev) < 0) {
267 device_printf(sc->dev, "failed to get disk size\n");
271 sc->data.openflags = 1;
272 sc->data.partflags |= MCDREADRAW;
273 sc->data.flags |= MCDVALID;
275 (void) mcd_lock_door(sc, MCD_LK_LOCK);
276 if (!(sc->data.flags & MCDVALID)) {
281 r = mcd_read_toc(sc);
287 mcdclose(struct cdev *dev, int flags, int fmt, struct thread *td)
289 struct mcd_softc *sc;
291 sc = (struct mcd_softc *)dev->si_drv1;
294 KASSERT(sc->data.openflags, ("device not open"));
296 (void) mcd_lock_door(sc, MCD_LK_UNLOCK);
297 sc->data.openflags = 0;
298 sc->data.partflags &= ~MCDREADRAW;
305 mcdstrategy(struct bio *bp)
307 struct mcd_softc *sc;
309 sc = (struct mcd_softc *)bp->bio_dev->si_drv1;
311 /* if device invalidated (e.g. media change, door open), error */
313 if (!(sc->data.flags & MCDVALID)) {
314 device_printf(sc->dev, "media changed\n");
320 if (!(bp->bio_cmd == BIO_READ)) {
321 bp->bio_error = EROFS;
325 /* no data to read */
326 if (bp->bio_bcount == 0)
329 if (!(sc->data.flags & MCDTOC)) {
337 bioq_disksort(&sc->data.head, bp);
339 /* now check whether we can perform processing */
345 bp->bio_flags |= BIO_ERROR;
348 bp->bio_resid = bp->bio_bcount;
354 mcd_start(struct mcd_softc *sc)
358 MCD_ASSERT_LOCKED(sc);
359 if (sc->data.flags & MCDMBXBSY) {
363 bp = bioq_takefirst(&sc->data.head);
365 /* block found to process, dequeue */
366 /*MCD_TRACE("mcd_start: found block bp=0x%x\n",bp,0,0,0);*/
367 sc->data.flags |= MCDMBXBSY;
373 sc->data.mbx.retry = MCD_RETRYS;
374 sc->data.mbx.bp = bp;
376 mcd_doread(sc, MCD_S_BEGIN,&(sc->data.mbx));
381 mcdioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td)
383 struct mcd_softc *sc;
386 sc = (struct mcd_softc *)dev->si_drv1;
389 if (mcd_getstat(sc, 1) == -1) { /* detect disk change too */
393 MCD_TRACE("ioctl called 0x%lx\n", cmd);
419 r = mcd_hard_reset(sc);
423 r = mcd_lock_door(sc, MCD_LK_UNLOCK);
427 r = mcd_lock_door(sc, MCD_LK_LOCK);
436 if (!(sc->data.flags & MCDVALID)) {
437 if ( (sc->data.status & (MCDDSKCHNG|MCDDOOROPEN))
438 || !(sc->data.status & MCDDSKIN))
439 for (retry = 0; retry < DISK_SENSE_SECS * WAIT_FRAC; retry++) {
440 (void) mtx_sleep(sc, &sc->mtx, PSOCK | PCATCH,
441 "mcdsn2", hz/WAIT_FRAC);
442 if ((r = mcd_getstat(sc, 1)) == -1) {
449 if ( (sc->data.status & (MCDDOOROPEN|MCDDSKCHNG))
450 || !(sc->data.status & MCDDSKIN)
456 sc->data.flags |= MCDVALID;
457 sc->data.partflags |= MCDREADRAW;
458 (void) mcd_lock_door(sc, MCD_LK_LOCK);
459 if (!(sc->data.flags & MCDVALID)) {
467 *(off_t *)addr = (off_t)sc->data.disksize * sc->data.blksize;
470 case DIOCGSECTORSIZE:
471 *(u_int *)addr = sc->data.blksize;
474 case CDIOCPLAYTRACKS:
475 r = mcd_playtracks(sc, (struct ioc_play_track *) addr);
477 case CDIOCPLAYBLOCKS:
478 r = mcd_playblocks(sc, (struct ioc_play_blocks *) addr);
481 r = mcd_playmsf(sc, (struct ioc_play_msf *) addr);
483 case CDIOCREADSUBCHANNEL_SYSSPACE:
484 return mcd_subchan(sc, (struct ioc_read_subchannel *) addr, 1);
485 case CDIOCREADSUBCHANNEL:
486 return mcd_subchan(sc, (struct ioc_read_subchannel *) addr, 0);
487 case CDIOREADTOCHEADER:
488 r = mcd_toc_header(sc, (struct ioc_toc_header *) addr);
490 case CDIOREADTOCENTRYS:
491 return mcd_toc_entrys(sc, (struct ioc_read_toc_entry *) addr);
499 if (mcd_setmode(sc, MCD_MD_COOKED) != 0)
515 mcd_size(struct cdev *dev)
517 struct mcd_softc *sc;
520 sc = (struct mcd_softc *)dev->si_drv1;
522 if (mcd_volinfo(sc) == 0) {
523 sc->data.blksize = MCDBLK;
524 size = msf2hsg(sc->data.volinfo.vol_msf, 0);
525 sc->data.disksize = size * (MCDBLK/DEV_BSIZE);
531 /***************************************************************
532 * lower level of driver starts here
533 **************************************************************/
538 0x00,0x00,0x10,0x20,0x00,0x30,0x00,0x00,
539 0x00,0x10,0x40,0x50,0x00,0x00,0x00,0x00
544 0x00,0x01,0x00,0x03,0x00,0x05,0x06,0x07,
550 mcd_configure(struct mcd_softc *sc)
552 MCD_WRITE(sc, MCD_REG_CONFIG, sc->data.config);
556 /* Wait for non-busy - return 0 on timeout */
558 twiddle_thumbs(struct mcd_softc *sc, int count, char *whine)
562 for (i = 0; i < count; i++) {
563 if (!(MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL))
567 device_printf(sc->dev, "timeout %s\n", whine);
571 /* check to see if a Mitsumi CD-ROM is attached to the ISA bus */
574 mcd_probe(struct mcd_softc *sc)
577 unsigned char stbytes[3];
579 sc->data.flags = MCDPROBING;
582 /* get irq/drq configuration word */
583 sc->data.config = irqs[dev->id_irq]; /* | drqs[dev->id_drq];*/
589 MCD_WRITE(sc, MCD_FLAGS, M_RESET);
592 * delay awhile by getting any pending garbage (old data) and
595 for (i = 1000000; i != 0; i--)
596 (void)MCD_READ(sc, MCD_FLAGS);
599 MCD_WRITE(sc, MCD_DATA, MCD_CMDGETSTAT);
600 if (!twiddle_thumbs(sc, 1000000, "getting status"))
601 return (ENXIO); /* Timeout */
602 /* Get version information */
603 MCD_WRITE(sc, MCD_DATA, MCD_CMDCONTINFO);
604 for (j = 0; j < 3; j++) {
605 if (!twiddle_thumbs(sc, 3000, "getting version info"))
607 stbytes[j] = (MCD_READ(sc, MCD_DATA) & 0xFF);
609 if (stbytes[1] == stbytes[2])
611 if (stbytes[2] >= 4 || stbytes[1] != 'M') {
612 MCD_WRITE(sc, MCD_CTRL, M_PICKLE);
613 sc->data.flags |= MCDNEWMODEL;
615 sc->data.read_command = MCD_CMDSINGLESPEEDREAD;
616 switch (stbytes[1]) {
618 if (stbytes[2] <= 2) {
619 sc->data.type = MCD_TYPE_LU002S;
620 sc->data.name = "Mitsumi LU002S";
621 } else if (stbytes[2] <= 5) {
622 sc->data.type = MCD_TYPE_LU005S;
623 sc->data.name = "Mitsumi LU005S";
625 sc->data.type = MCD_TYPE_LU006S;
626 sc->data.name = "Mitsumi LU006S";
630 sc->data.type = MCD_TYPE_FX001;
631 sc->data.name = "Mitsumi FX001";
634 sc->data.type = MCD_TYPE_FX001D;
635 sc->data.name = "Mitsumi FX001D";
636 sc->data.read_command = MCD_CMDDOUBLESPEEDREAD;
639 sc->data.type = MCD_TYPE_UNKNOWN;
640 sc->data.name = "Mitsumi ???";
645 device_printf(sc->dev, "type %s, version info: %c %x\n",
646 sc->data.name, stbytes[1], stbytes[2]);
653 mcd_waitrdy(struct mcd_softc *sc, int dly)
657 /* wait until flag port senses status ready */
658 for (i=0; i<dly; i+=MIN_DELAY) {
659 if (!(MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL))
667 mcd_getreply(struct mcd_softc *sc, int dly)
670 /* wait data to become ready */
671 if (mcd_waitrdy(sc, dly)<0) {
672 device_printf(sc->dev, "timeout getreply\n");
677 return (MCD_READ(sc, MCD_REG_STATUS) & 0xFF);
681 mcd_getstat(struct mcd_softc *sc, int sflg)
687 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDGETSTAT);
688 i = mcd_getreply(sc, DELAY_GETREPLY);
689 if (i<0 || (i & MCD_ST_CMDCHECK)) {
690 sc->data.curr_mode = MCD_MD_UNKNOWN;
696 if (mcd_setflags(sc) < 0)
698 return (sc->data.status);
702 mcd_setflags(struct mcd_softc *sc)
706 if ( (sc->data.status & (MCDDSKCHNG|MCDDOOROPEN))
707 || !(sc->data.status & MCDDSKIN)) {
708 MCD_TRACE("setflags: sensed DSKCHNG or DOOROPEN or !DSKIN\n");
713 if (sc->data.status & MCDAUDIOBSY)
714 sc->data.audio_status = CD_AS_PLAY_IN_PROGRESS;
715 else if (sc->data.audio_status == CD_AS_PLAY_IN_PROGRESS)
716 sc->data.audio_status = CD_AS_PLAY_COMPLETED;
721 mcd_get(struct mcd_softc *sc, char *buf, int nmax)
725 for (i=0; i<nmax; i++) {
727 if ((k = mcd_getreply(sc, DELAY_GETREPLY)) < 0) {
728 device_printf(sc->dev, "timeout mcd_get\n");
737 mcd_send(struct mcd_softc *sc, int cmd,int nretrys)
741 /*MCD_TRACE("mcd_send: command = 0x%02x\n",cmd,0,0,0);*/
742 for (i=0; i<nretrys; i++) {
743 MCD_WRITE(sc, MCD_REG_COMMAND, cmd);
744 if ((k=mcd_getstat(sc, 0)) != -1)
748 device_printf(sc->dev, "media changed\n");
752 device_printf(sc->dev, "mcd_send retry cnt exceeded\n");
755 /*MCD_TRACE("mcd_send: done\n",0,0,0,0);*/
760 hsg2msf(int hsg, bcd_t *msf)
763 F_msf(msf) = bin2bcd(hsg % 75);
765 S_msf(msf) = bin2bcd(hsg % 60);
767 M_msf(msf) = bin2bcd(hsg);
771 msf2hsg(bcd_t *msf, int relative)
773 return (bcd2bin(M_msf(msf)) * 60 + bcd2bin(S_msf(msf))) * 75 +
774 bcd2bin(F_msf(msf)) - (!relative) * 150;
778 mcd_volinfo(struct mcd_softc *sc)
781 /* Just return if we already have it */
782 if (sc->data.flags & MCDVOLINFO) return (0);
784 /*MCD_TRACE("mcd_volinfo: enter\n",0,0,0,0);*/
786 /* send volume info command */
787 if (mcd_send(sc, MCD_CMDGETVOLINFO,MCD_RETRYS) < 0)
791 if (mcd_get(sc, (char*) &sc->data.volinfo,sizeof(struct mcd_volinfo)) < 0) {
792 device_printf(sc->dev, "mcd_volinfo: error read data\n");
796 if (sc->data.volinfo.trk_low > 0 &&
797 sc->data.volinfo.trk_high >= sc->data.volinfo.trk_low
799 sc->data.flags |= MCDVOLINFO; /* volinfo is OK */
806 /* state machine to process read requests
807 * initialize with MCD_S_BEGIN: calculate sizes, and read status
808 * MCD_S_WAITSTAT: wait for status reply, set mode
809 * MCD_S_WAITMODE: waits for status reply from set mode, set read command
810 * MCD_S_WAITREAD: wait for read ready, read data
813 mcd_timeout(void *arg)
815 struct mcd_softc *sc;
817 sc = (struct mcd_softc *)arg;
819 MCD_ASSERT_LOCKED(sc);
820 mcd_doread(sc, sc->ch_state, sc->ch_mbxsave);
824 mcd_doread(struct mcd_softc *sc, int state, struct mcd_mbx *mbxin)
829 struct mcd_read2 rbuf;
833 MCD_ASSERT_LOCKED(sc);
834 mbx = (state!=MCD_S_BEGIN) ? sc->ch_mbxsave : mbxin;
840 mbx = sc->ch_mbxsave = mbxin;
845 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDGETSTAT);
846 mbx->count = RDELAY_WAITSTAT;
847 sc->ch_state = MCD_S_WAITSTAT;
848 callout_reset(&sc->timer, hz/100, mcd_timeout, sc); /* XXX */
851 sc->ch_state = MCD_S_WAITSTAT;
852 callout_stop(&sc->timer);
853 if (mbx->count-- >= 0) {
854 if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) {
855 sc->ch_state = MCD_S_WAITSTAT;
856 callout_reset(&sc->timer, hz/100,
857 mcd_timeout, sc); /* XXX */
860 sc->data.status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF;
861 if (sc->data.status & MCD_ST_CMDCHECK)
863 if (mcd_setflags(sc) < 0)
865 MCD_TRACE("got WAITSTAT delay=%d\n",
866 RDELAY_WAITSTAT-mbx->count);
867 /* reject, if audio active */
868 if (sc->data.status & MCDAUDIOBSY) {
869 device_printf(sc->dev, "audio is active\n");
874 /* to check for raw/cooked mode */
875 if (sc->data.flags & MCDREADRAW) {
880 mbx->sz = sc->data.blksize;
883 if (rm == sc->data.curr_mode)
886 mbx->count = RDELAY_WAITMODE;
888 sc->data.curr_mode = MCD_MD_UNKNOWN;
890 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDSETMODE);
891 MCD_WRITE(sc, MCD_REG_COMMAND, rm);
893 sc->ch_state = MCD_S_WAITMODE;
894 callout_reset(&sc->timer, hz / 100, mcd_timeout, sc); /* XXX */
897 device_printf(sc->dev, "timeout getstatus\n");
902 sc->ch_state = MCD_S_WAITMODE;
903 callout_stop(&sc->timer);
904 if (mbx->count-- < 0) {
905 device_printf(sc->dev, "timeout set mode\n");
908 if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) {
909 sc->ch_state = MCD_S_WAITMODE;
910 callout_reset(&sc->timer, hz / 100, mcd_timeout, sc);
913 sc->data.status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF;
914 if (sc->data.status & MCD_ST_CMDCHECK) {
915 sc->data.curr_mode = MCD_MD_UNKNOWN;
918 if (mcd_setflags(sc) < 0)
920 sc->data.curr_mode = mbx->mode;
921 MCD_TRACE("got WAITMODE delay=%d\n",
922 RDELAY_WAITMODE-mbx->count);
924 /* for first block */
925 mbx->nblk = (bp->bio_bcount + (mbx->sz-1)) / mbx->sz;
929 blknum = bp->bio_offset / mbx->sz + mbx->skip/mbx->sz;
931 MCD_TRACE("mcd_doread: read blknum=%d for bp=%p\n",
934 /* build parameter block */
935 hsg2msf(blknum,rbuf.start_msf);
937 /* send the read command */
938 MCD_WRITE(sc, MCD_REG_COMMAND, sc->data.read_command);
939 MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[0]);
940 MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[1]);
941 MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[2]);
942 MCD_WRITE(sc, MCD_REG_COMMAND, 0);
943 MCD_WRITE(sc, MCD_REG_COMMAND, 0);
944 MCD_WRITE(sc, MCD_REG_COMMAND, 1);
946 /* Spin briefly (<= 2ms) to avoid missing next block */
947 for (i = 0; i < 20; i++) {
948 k = MCD_READ(sc, MCD_FLAGS);
949 if (!(k & MFL_DATA_NOT_AVAIL))
954 mbx->count = RDELAY_WAITREAD;
955 sc->ch_state = MCD_S_WAITREAD;
956 callout_reset(&sc->timer, hz / 100, mcd_timeout, sc); /* XXX */
959 sc->ch_state = MCD_S_WAITREAD;
960 callout_stop(&sc->timer);
961 if (mbx->count-- > 0) {
962 k = MCD_READ(sc, MCD_FLAGS);
963 if (!(k & MFL_DATA_NOT_AVAIL)) { /* XXX */
964 MCD_TRACE("got data delay=%d\n",
965 RDELAY_WAITREAD-mbx->count);
968 addr = bp->bio_data + mbx->skip;
970 MCD_WRITE(sc, MCD_REG_CTL2,0x04); /* XXX */
971 for (i=0; i<mbx->sz; i++)
972 *addr++ = MCD_READ(sc, MCD_REG_RDATA);
973 MCD_WRITE(sc, MCD_REG_CTL2,0x0c); /* XXX */
975 k = MCD_READ(sc, MCD_FLAGS);
976 /* If we still have some junk, read it too */
977 if (!(k & MFL_DATA_NOT_AVAIL)) {
978 MCD_WRITE(sc, MCD_REG_CTL2, 0x04); /* XXX */
979 (void)MCD_READ(sc, MCD_REG_RDATA);
980 (void)MCD_READ(sc, MCD_REG_RDATA);
981 MCD_WRITE(sc, MCD_REG_CTL2, 0x0c); /* XXX */
984 if (--mbx->nblk > 0) {
985 mbx->skip += mbx->sz;
993 sc->data.flags &= ~(MCDMBXBSY|MCDREADRAW);
997 if (!(k & MFL_STATUS_NOT_AVAIL)) {
998 sc->data.status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF;
999 if (sc->data.status & MCD_ST_CMDCHECK)
1001 if (mcd_setflags(sc) < 0)
1004 sc->ch_state = MCD_S_WAITREAD;
1005 callout_reset(&sc->timer, hz / 100, mcd_timeout, sc); /* XXX */
1008 device_printf(sc->dev, "timeout read data\n");
1014 if (mbx->retry-- > 0) {
1015 device_printf(sc->dev, "retrying\n");
1016 state = MCD_S_BEGIN1;
1020 /* invalidate the buffer */
1021 bp->bio_flags |= BIO_ERROR;
1022 bp->bio_resid = bp->bio_bcount;
1025 sc->data.flags &= ~(MCDMBXBSY|MCDREADRAW);
1030 device_printf(sc->dev, "media changed\n");
1034 device_printf(sc->dev, "unit timeout, resetting\n");
1035 MCD_WRITE(sc, MCD_REG_RESET, MCD_CMDRESET);
1037 (void)mcd_getstat(sc, 1);
1038 (void)mcd_getstat(sc, 1);
1039 /*sc->data.status &= ~MCDDSKCHNG; */
1040 sc->data.debug = 1; /* preventive set debug mode */
1047 mcd_lock_door(struct mcd_softc *sc, int lock)
1050 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDLOCKDRV);
1051 MCD_WRITE(sc, MCD_REG_COMMAND, lock);
1052 if (mcd_getstat(sc, 0) == -1)
1058 mcd_close_tray(struct mcd_softc *sc)
1062 if (mcd_getstat(sc, 1) == -1)
1064 if (sc->data.status & MCDDOOROPEN) {
1065 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDCLOSETRAY);
1066 for (retry = 0; retry < CLOSE_TRAY_SECS * WAIT_FRAC; retry++) {
1067 if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL)
1068 (void) mtx_sleep(sc, &sc->mtx, PSOCK | PCATCH,
1069 "mcdcls", hz/WAIT_FRAC);
1071 if ((r = mcd_getstat(sc, 0)) == -1)
1082 mcd_eject(struct mcd_softc *sc)
1086 if (mcd_getstat(sc, 1) == -1) /* detect disk change too */
1088 if (sc->data.status & MCDDOOROPEN)
1090 if ((r = mcd_stop(sc)) == EIO)
1092 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDEJECTDISK);
1093 if (mcd_getstat(sc, 0) == -1)
1099 mcd_inject(struct mcd_softc *sc)
1102 if (mcd_getstat(sc, 1) == -1) /* detect disk change too */
1104 if (sc->data.status & MCDDOOROPEN)
1105 return mcd_close_tray(sc);
1110 mcd_hard_reset(struct mcd_softc *sc)
1113 MCD_WRITE(sc, MCD_REG_RESET, MCD_CMDRESET);
1114 sc->data.curr_mode = MCD_MD_UNKNOWN;
1115 sc->data.audio_status = CD_AS_AUDIO_INVALID;
1120 mcd_soft_reset(struct mcd_softc *sc)
1123 sc->data.flags &= (MCDINIT|MCDPROBING|MCDNEWMODEL);
1124 sc->data.curr_mode = MCD_MD_UNKNOWN;
1125 sc->data.partflags = 0;
1126 sc->data.audio_status = CD_AS_AUDIO_INVALID;
1130 mcd_setmode(struct mcd_softc *sc, int mode)
1134 if (sc->data.curr_mode == mode)
1137 device_printf(sc->dev, "setting mode to %d\n", mode);
1138 for(retry=0; retry<MCD_RETRYS; retry++)
1140 sc->data.curr_mode = MCD_MD_UNKNOWN;
1141 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDSETMODE);
1142 MCD_WRITE(sc, MCD_REG_COMMAND, mode);
1143 if ((st = mcd_getstat(sc, 0)) >= 0) {
1144 sc->data.curr_mode = mode;
1148 device_printf(sc->dev, "media changed\n");
1157 mcd_toc_header(struct mcd_softc *sc, struct ioc_toc_header *th)
1161 if ((r = mcd_volinfo(sc)) != 0)
1164 th->starting_track = bcd2bin(sc->data.volinfo.trk_low);
1165 th->ending_track = bcd2bin(sc->data.volinfo.trk_high);
1166 th->len = 2 * sizeof(u_char) /* start & end tracks */ +
1167 (th->ending_track + 1 - th->starting_track + 1) *
1168 sizeof(struct cd_toc_entry);
1174 mcd_read_toc(struct mcd_softc *sc)
1176 struct ioc_toc_header th;
1177 struct mcd_qchninfo q;
1178 int rc, trk, idx, retry;
1180 /* Only read TOC if needed */
1181 if (sc->data.flags & MCDTOC)
1185 device_printf(sc->dev, "reading toc header\n");
1187 if ((rc = mcd_toc_header(sc, &th)) != 0)
1190 if (mcd_send(sc, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0)
1193 if (mcd_setmode(sc, MCD_MD_TOC) != 0)
1197 device_printf(sc->dev, "get_toc reading qchannel info\n");
1199 for(trk=th.starting_track; trk<=th.ending_track; trk++)
1200 sc->data.toc[trk].idx_no = 0;
1201 trk = th.ending_track - th.starting_track + 1;
1202 for(retry=0; retry<600 && trk>0; retry++)
1204 if (mcd_getqchan(sc, &q) < 0) break;
1205 idx = bcd2bin(q.idx_no);
1206 if (idx>=th.starting_track && idx<=th.ending_track && q.trk_no==0) {
1207 if (sc->data.toc[idx].idx_no == 0) {
1208 sc->data.toc[idx] = q;
1214 if (mcd_setmode(sc, MCD_MD_COOKED) != 0)
1220 /* add a fake last+1 */
1221 idx = th.ending_track + 1;
1222 sc->data.toc[idx].control = sc->data.toc[idx-1].control;
1223 sc->data.toc[idx].addr_type = sc->data.toc[idx-1].addr_type;
1224 sc->data.toc[idx].trk_no = 0;
1225 sc->data.toc[idx].idx_no = MCD_LASTPLUS1;
1226 sc->data.toc[idx].hd_pos_msf[0] = sc->data.volinfo.vol_msf[0];
1227 sc->data.toc[idx].hd_pos_msf[1] = sc->data.volinfo.vol_msf[1];
1228 sc->data.toc[idx].hd_pos_msf[2] = sc->data.volinfo.vol_msf[2];
1232 for (i = th.starting_track; i <= idx; i++)
1233 device_printf(sc->dev, "trk %d idx %d pos %d %d %d\n",
1235 sc->data.toc[i].idx_no > 0x99 ? sc->data.toc[i].idx_no :
1236 bcd2bin(sc->data.toc[i].idx_no),
1237 bcd2bin(sc->data.toc[i].hd_pos_msf[0]),
1238 bcd2bin(sc->data.toc[i].hd_pos_msf[1]),
1239 bcd2bin(sc->data.toc[i].hd_pos_msf[2]));
1242 sc->data.flags |= MCDTOC;
1249 mcd_toc_entry(struct mcd_softc *sc, struct ioc_read_toc_single_entry *te)
1251 struct ioc_toc_header th;
1254 if (te->address_format != CD_MSF_FORMAT
1255 && te->address_format != CD_LBA_FORMAT)
1258 /* Copy the toc header */
1259 if ((rc = mcd_toc_header(sc, &th)) != 0)
1262 /* verify starting track */
1265 trk = th.starting_track;
1266 else if (trk == MCD_LASTPLUS1)
1267 trk = th.ending_track + 1;
1268 else if (trk < th.starting_track || trk > th.ending_track + 1)
1271 /* Make sure we have a valid toc */
1272 if ((rc=mcd_read_toc(sc)) != 0)
1275 /* Copy the TOC data. */
1276 if (sc->data.toc[trk].idx_no == 0)
1279 te->entry.control = sc->data.toc[trk].control;
1280 te->entry.addr_type = sc->data.toc[trk].addr_type;
1282 sc->data.toc[trk].idx_no > 0x99 ? sc->data.toc[trk].idx_no :
1283 bcd2bin(sc->data.toc[trk].idx_no);
1284 switch (te->address_format) {
1286 te->entry.addr.msf.unused = 0;
1287 te->entry.addr.msf.minute = bcd2bin(sc->data.toc[trk].hd_pos_msf[0]);
1288 te->entry.addr.msf.second = bcd2bin(sc->data.toc[trk].hd_pos_msf[1]);
1289 te->entry.addr.msf.frame = bcd2bin(sc->data.toc[trk].hd_pos_msf[2]);
1292 te->entry.addr.lba = htonl(msf2hsg(sc->data.toc[trk].hd_pos_msf, 0));
1300 mcd_toc_entrys(struct mcd_softc *sc, struct ioc_read_toc_entry *te)
1302 struct cd_toc_entry entries[MCD_MAXTOCS];
1303 struct ioc_toc_header th;
1304 int rc, n, trk, len;
1306 if ( te->data_len < sizeof(entries[0])
1307 || (te->data_len % sizeof(entries[0])) != 0
1308 || (te->address_format != CD_MSF_FORMAT
1309 && te->address_format != CD_LBA_FORMAT)
1313 /* Copy the toc header */
1314 if ((rc = mcd_toc_header(sc, &th)) != 0)
1317 /* verify starting track */
1318 trk = te->starting_track;
1320 trk = th.starting_track;
1321 else if (trk == MCD_LASTPLUS1)
1322 trk = th.ending_track + 1;
1323 else if (trk < th.starting_track || trk > th.ending_track + 1)
1326 len = ((th.ending_track + 1 - trk) + 1) *
1328 if (te->data_len < len)
1330 if (len > sizeof(entries))
1333 /* Make sure we have a valid toc */
1334 if ((rc=mcd_read_toc(sc)) != 0)
1337 /* Copy the TOC data. */
1338 for (n = 0; len > 0 && trk <= th.ending_track + 1; trk++) {
1339 if (sc->data.toc[trk].idx_no == 0)
1341 entries[n].control = sc->data.toc[trk].control;
1342 entries[n].addr_type = sc->data.toc[trk].addr_type;
1344 sc->data.toc[trk].idx_no > 0x99 ? sc->data.toc[trk].idx_no :
1345 bcd2bin(sc->data.toc[trk].idx_no);
1346 switch (te->address_format) {
1348 entries[n].addr.msf.unused = 0;
1349 entries[n].addr.msf.minute = bcd2bin(sc->data.toc[trk].hd_pos_msf[0]);
1350 entries[n].addr.msf.second = bcd2bin(sc->data.toc[trk].hd_pos_msf[1]);
1351 entries[n].addr.msf.frame = bcd2bin(sc->data.toc[trk].hd_pos_msf[2]);
1354 entries[n].addr.lba = htonl(msf2hsg(sc->data.toc[trk].hd_pos_msf, 0));
1357 len -= sizeof(struct cd_toc_entry);
1361 /* copy the data back */
1363 return copyout(entries, te->data, n * sizeof(struct cd_toc_entry));
1367 mcd_stop(struct mcd_softc *sc)
1370 /* Verify current status */
1371 if (sc->data.audio_status != CD_AS_PLAY_IN_PROGRESS &&
1372 sc->data.audio_status != CD_AS_PLAY_PAUSED &&
1373 sc->data.audio_status != CD_AS_PLAY_COMPLETED) {
1375 device_printf(sc->dev,
1376 "stop attempted when not playing, audio status %d\n",
1377 sc->data.audio_status);
1380 if (sc->data.audio_status == CD_AS_PLAY_IN_PROGRESS)
1381 if (mcd_send(sc, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0)
1383 sc->data.audio_status = CD_AS_PLAY_COMPLETED;
1388 mcd_getqchan(struct mcd_softc *sc, struct mcd_qchninfo *q)
1391 if (mcd_send(sc, MCD_CMDGETQCHN, MCD_RETRYS) < 0)
1393 if (mcd_get(sc, (char *) q, sizeof(struct mcd_qchninfo)) < 0)
1395 if (sc->data.debug) {
1396 device_printf(sc->dev,
1397 "getqchan control=0x%x addr_type=0x%x trk=%d ind=%d ttm=%d:%d.%d dtm=%d:%d.%d\n",
1398 q->control, q->addr_type,
1401 bcd2bin(q->trk_size_msf[0]),
1402 bcd2bin(q->trk_size_msf[1]),
1403 bcd2bin(q->trk_size_msf[2]),
1404 bcd2bin(q->hd_pos_msf[0]),
1405 bcd2bin(q->hd_pos_msf[1]),
1406 bcd2bin(q->hd_pos_msf[2]));
1412 mcd_subchan(struct mcd_softc *sc, struct ioc_read_subchannel *sch, int nocopyout)
1414 struct mcd_qchninfo q;
1415 struct cd_sub_channel_info data;
1419 device_printf(sc->dev, "subchan af=%d, df=%d\n",
1420 sch->address_format,
1423 if (sch->address_format != CD_MSF_FORMAT &&
1424 sch->address_format != CD_LBA_FORMAT)
1427 if (sch->data_format != CD_CURRENT_POSITION &&
1428 sch->data_format != CD_MEDIA_CATALOG)
1431 if (mcd_setmode(sc, MCD_MD_COOKED) != 0)
1434 if (mcd_getqchan(sc, &q) < 0)
1437 data.header.audio_status = sc->data.audio_status;
1438 data.what.position.data_format = sch->data_format;
1440 switch (sch->data_format) {
1441 case CD_MEDIA_CATALOG:
1442 data.what.media_catalog.mc_valid = 1;
1443 data.what.media_catalog.mc_number[0] = '\0';
1446 case CD_CURRENT_POSITION:
1447 data.what.position.control = q.control;
1448 data.what.position.addr_type = q.addr_type;
1449 data.what.position.track_number = bcd2bin(q.trk_no);
1450 data.what.position.index_number = bcd2bin(q.idx_no);
1451 switch (sch->address_format) {
1453 data.what.position.reladdr.msf.unused = 0;
1454 data.what.position.reladdr.msf.minute = bcd2bin(q.trk_size_msf[0]);
1455 data.what.position.reladdr.msf.second = bcd2bin(q.trk_size_msf[1]);
1456 data.what.position.reladdr.msf.frame = bcd2bin(q.trk_size_msf[2]);
1457 data.what.position.absaddr.msf.unused = 0;
1458 data.what.position.absaddr.msf.minute = bcd2bin(q.hd_pos_msf[0]);
1459 data.what.position.absaddr.msf.second = bcd2bin(q.hd_pos_msf[1]);
1460 data.what.position.absaddr.msf.frame = bcd2bin(q.hd_pos_msf[2]);
1463 lba = msf2hsg(q.trk_size_msf, 1);
1465 * Pre-gap has index number of 0, and decreasing MSF
1466 * address. Must be converted to negative LBA, per
1469 if (data.what.position.index_number == 0)
1471 data.what.position.reladdr.lba = htonl(lba);
1472 data.what.position.absaddr.lba = htonl(msf2hsg(q.hd_pos_msf, 0));
1480 return copyout(&data, sch->data, min(sizeof(struct cd_sub_channel_info), sch->data_len));
1481 bcopy(&data, sch->data, min(sizeof(struct cd_sub_channel_info), sch->data_len));
1486 mcd_playmsf(struct mcd_softc *sc, struct ioc_play_msf *p)
1488 struct mcd_read2 pb;
1491 device_printf(sc->dev, "playmsf: from %d:%d.%d to %d:%d.%d\n",
1492 p->start_m, p->start_s, p->start_f,
1493 p->end_m, p->end_s, p->end_f);
1495 if ((p->start_m * 60 * 75 + p->start_s * 75 + p->start_f) >=
1496 (p->end_m * 60 * 75 + p->end_s * 75 + p->end_f) ||
1497 (p->end_m * 60 * 75 + p->end_s * 75 + p->end_f) >
1498 M_msf(sc->data.volinfo.vol_msf) * 60 * 75 +
1499 S_msf(sc->data.volinfo.vol_msf) * 75 +
1500 F_msf(sc->data.volinfo.vol_msf))
1503 pb.start_msf[0] = bin2bcd(p->start_m);
1504 pb.start_msf[1] = bin2bcd(p->start_s);
1505 pb.start_msf[2] = bin2bcd(p->start_f);
1506 pb.end_msf[0] = bin2bcd(p->end_m);
1507 pb.end_msf[1] = bin2bcd(p->end_s);
1508 pb.end_msf[2] = bin2bcd(p->end_f);
1510 if (mcd_setmode(sc, MCD_MD_COOKED) != 0)
1513 return mcd_play(sc, &pb);
1517 mcd_playtracks(struct mcd_softc *sc, struct ioc_play_track *pt)
1519 struct mcd_read2 pb;
1520 int a = pt->start_track;
1521 int z = pt->end_track;
1524 if ((rc = mcd_read_toc(sc)) != 0)
1528 device_printf(sc->dev, "playtracks from %d:%d to %d:%d\n",
1529 a, pt->start_index, z, pt->end_index);
1531 if ( a < bcd2bin(sc->data.volinfo.trk_low)
1532 || a > bcd2bin(sc->data.volinfo.trk_high)
1534 || z < bcd2bin(sc->data.volinfo.trk_low)
1535 || z > bcd2bin(sc->data.volinfo.trk_high))
1538 for (i = 0; i < 3; i++) {
1539 pb.start_msf[i] = sc->data.toc[a].hd_pos_msf[i];
1540 pb.end_msf[i] = sc->data.toc[z+1].hd_pos_msf[i];
1543 if (mcd_setmode(sc, MCD_MD_COOKED) != 0)
1546 return mcd_play(sc, &pb);
1550 mcd_playblocks(struct mcd_softc *sc, struct ioc_play_blocks *p)
1552 struct mcd_read2 pb;
1555 device_printf(sc->dev, "playblocks: blkno %d length %d\n",
1558 if (p->blk > sc->data.disksize || p->len > sc->data.disksize ||
1559 p->blk < 0 || p->len < 0 ||
1560 (p->blk + p->len) > sc->data.disksize)
1563 hsg2msf(p->blk, pb.start_msf);
1564 hsg2msf(p->blk + p->len, pb.end_msf);
1566 if (mcd_setmode(sc, MCD_MD_COOKED) != 0)
1569 return mcd_play(sc, &pb);
1573 mcd_play(struct mcd_softc *sc, struct mcd_read2 *pb)
1575 int retry, st = -1, status;
1577 sc->data.lastpb = *pb;
1578 for(retry=0; retry<MCD_RETRYS; retry++) {
1581 MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDSINGLESPEEDREAD);
1582 MCD_WRITE(sc, MCD_REG_COMMAND, pb->start_msf[0]);
1583 MCD_WRITE(sc, MCD_REG_COMMAND, pb->start_msf[1]);
1584 MCD_WRITE(sc, MCD_REG_COMMAND, pb->start_msf[2]);
1585 MCD_WRITE(sc, MCD_REG_COMMAND, pb->end_msf[0]);
1586 MCD_WRITE(sc, MCD_REG_COMMAND, pb->end_msf[1]);
1587 MCD_WRITE(sc, MCD_REG_COMMAND, pb->end_msf[2]);
1590 status=mcd_getstat(sc, 0);
1593 else if (status != -2)
1599 device_printf(sc->dev, "media changed\n");
1603 device_printf(sc->dev,
1604 "mcd_play retry=%d, status=0x%02x\n", retry, status);
1607 sc->data.audio_status = CD_AS_PLAY_IN_PROGRESS;
1612 mcd_pause(struct mcd_softc *sc)
1614 struct mcd_qchninfo q;
1617 /* Verify current status */
1618 if (sc->data.audio_status != CD_AS_PLAY_IN_PROGRESS &&
1619 sc->data.audio_status != CD_AS_PLAY_PAUSED) {
1621 device_printf(sc->dev,
1622 "pause attempted when not playing, audio status %d\n",
1623 sc->data.audio_status);
1627 /* Get the current position */
1628 if (mcd_getqchan(sc, &q) < 0)
1631 /* Copy it into lastpb */
1632 sc->data.lastpb.start_msf[0] = q.hd_pos_msf[0];
1633 sc->data.lastpb.start_msf[1] = q.hd_pos_msf[1];
1634 sc->data.lastpb.start_msf[2] = q.hd_pos_msf[2];
1637 if ((rc=mcd_stop(sc)) != 0)
1640 /* Set the proper status and exit */
1641 sc->data.audio_status = CD_AS_PLAY_PAUSED;
1646 mcd_resume(struct mcd_softc *sc)
1649 if (sc->data.audio_status != CD_AS_PLAY_PAUSED)
1651 return mcd_play(sc, &sc->data.lastpb);