/* * Copyright 1993 by Holger Veit (data part) * Copyright 1993 by Brian Moore (audio part) * Changes Copyright 1993 by Gary Clark II * Changes Copyright (C) 1994-1995 by Andrey A. Chernov, Moscow, Russia * * Rewrote probe routine to work on newer Mitsumi drives. * Additional changes (C) 1994 by Jordan K. Hubbard * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This software was developed by Holger Veit and Brian Moore * for use with "386BSD" and similar operating systems. * "Similar operating systems" includes mainly non-profit oriented * systems for research and education, including but not restricted to * "NetBSD", "FreeBSD", "Mach" (by CMU). * 4. Neither the name of the developer(s) nor the name "386BSD" * may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE DEVELOPER(S) ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE DEVELOPER(S) BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ static const char COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore"; #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define MCD_TRACE(format, args...) \ { \ if (sc->debug) { \ device_printf(sc->dev, "status=0x%02x: ", \ sc->data.status); \ printf(format, ## args); \ } \ } #define RAW_PART 2 /* flags */ #define MCDVALID 0x0001 /* parameters loaded */ #define MCDINIT 0x0002 /* device is init'd */ #define MCDNEWMODEL 0x0004 /* device is new model */ #define MCDLABEL 0x0008 /* label is read */ #define MCDPROBING 0x0010 /* probing */ #define MCDREADRAW 0x0020 /* read raw mode (2352 bytes) */ #define MCDVOLINFO 0x0040 /* already read volinfo */ #define MCDTOC 0x0080 /* already read toc */ #define MCDMBXBSY 0x0100 /* local mbx is busy */ /* status */ #define MCDAUDIOBSY MCD_ST_AUDIOBSY /* playing audio */ #define MCDDSKCHNG MCD_ST_DSKCHNG /* sensed change of disk */ #define MCDDSKIN MCD_ST_DSKIN /* sensed disk in drive */ #define MCDDOOROPEN MCD_ST_DOOROPEN /* sensed door open */ /* These are apparently the different states a mitsumi can get up to */ #define MCDCDABSENT 0x0030 #define MCDCDPRESENT 0x0020 #define MCDSCLOSED 0x0080 #define MCDSOPEN 0x00a0 #define MCD_MD_UNKNOWN (-1) #define MCD_TYPE_UNKNOWN 0 #define MCD_TYPE_LU002S 1 #define MCD_TYPE_LU005S 2 #define MCD_TYPE_LU006S 3 #define MCD_TYPE_FX001 4 #define MCD_TYPE_FX001D 5 /* reader state machine */ #define MCD_S_BEGIN 0 #define MCD_S_BEGIN1 1 #define MCD_S_WAITSTAT 2 #define MCD_S_WAITMODE 3 #define MCD_S_WAITREAD 4 /* prototypes */ static void mcd_start(struct mcd_softc *); #ifdef NOTYET static void mcd_configure(struct mcd_softc *sc); #endif static int mcd_get(struct mcd_softc *, char *buf, int nmax); static int mcd_setflags(struct mcd_softc *); static int mcd_getstat(struct mcd_softc *,int sflg); static int mcd_send(struct mcd_softc *, int cmd,int nretrys); static void hsg2msf(int hsg, bcd_t *msf); static int msf2hsg(bcd_t *msf, int relative); static int mcd_volinfo(struct mcd_softc *); static int mcd_waitrdy(struct mcd_softc *,int dly); static timeout_t mcd_timeout; static void mcd_doread(struct mcd_softc *, int state, struct mcd_mbx *mbxin); static void mcd_soft_reset(struct mcd_softc *); static int mcd_hard_reset(struct mcd_softc *); static int mcd_setmode(struct mcd_softc *, int mode); static int mcd_getqchan(struct mcd_softc *, struct mcd_qchninfo *q); static int mcd_subchan(struct mcd_softc *, struct ioc_read_subchannel *sc); static int mcd_toc_header(struct mcd_softc *, struct ioc_toc_header *th); static int mcd_read_toc(struct mcd_softc *); static int mcd_toc_entrys(struct mcd_softc *, struct ioc_read_toc_entry *te); #if 0 static int mcd_toc_entry(struct mcd_softc *, struct ioc_read_toc_single_entry *te); #endif static int mcd_stop(struct mcd_softc *); static int mcd_eject(struct mcd_softc *); static int mcd_inject(struct mcd_softc *); static int mcd_playtracks(struct mcd_softc *, struct ioc_play_track *pt); static int mcd_play(struct mcd_softc *, struct mcd_read2 *pb); static int mcd_playmsf(struct mcd_softc *, struct ioc_play_msf *pt); static int mcd_playblocks(struct mcd_softc *, struct ioc_play_blocks *); static int mcd_pause(struct mcd_softc *); static int mcd_resume(struct mcd_softc *); static int mcd_lock_door(struct mcd_softc *, int lock); static int mcd_close_tray(struct mcd_softc *); static d_open_t mcdopen; static d_close_t mcdclose; static d_ioctl_t mcdioctl; static d_psize_t mcdsize; static d_strategy_t mcdstrategy; #define CDEV_MAJOR 29 static struct cdevsw mcd_cdevsw = { /* open */ mcdopen, /* close */ mcdclose, /* read */ physread, /* write */ nowrite, /* ioctl */ mcdioctl, /* poll */ nopoll, /* mmap */ nommap, /* strategy */ mcdstrategy, /* name */ "mcd", /* maj */ CDEV_MAJOR, /* dump */ nodump, /* psize */ nopsize, /* flags */ D_DISK, }; #define MCD_RETRYS 5 #define MCD_RDRETRYS 8 #define CLOSE_TRAY_SECS 8 #define DISK_SENSE_SECS 3 #define WAIT_FRAC 4 /* several delays */ #define RDELAY_WAITSTAT 300 #define RDELAY_WAITMODE 300 #define RDELAY_WAITREAD 800 #define MIN_DELAY 15 #define DELAY_GETREPLY 5000000 int mcd_attach(struct mcd_softc *sc) { struct mcd_data *cd; int unit; cd = &sc->data; unit = device_get_unit(sc->dev); cd->flags |= MCDINIT; mcd_soft_reset(sc); bioq_init(&cd->head); #ifdef NOTYET /* wire controller for interrupts and dma */ mcd_configure(sc); #endif /* name filled in probe */ sc->mcd_dev_t = make_dev(&mcd_cdevsw, 8 * unit, UID_ROOT, GID_OPERATOR, 0640, "mcd%d", unit); sc->mcd_dev_t->si_drv1 = (void *)sc; return 0; } static int mcdopen(dev_t dev, int flags, int fmt, struct thread *td) { struct mcd_softc *sc; struct mcd_data *cd; int r,retry; sc = (struct mcd_softc *)dev->si_drv1; cd = &sc->data; /* not initialized*/ if (!(cd->flags & MCDINIT)) return ENXIO; /* invalidated in the meantime? mark all open part's invalid */ if (!(cd->flags & MCDVALID) && cd->openflags) return ENXIO; if (mcd_getstat(sc, 1) == -1) return EIO; if ( (cd->status & (MCDDSKCHNG|MCDDOOROPEN)) || !(cd->status & MCDDSKIN)) for (retry = 0; retry < DISK_SENSE_SECS * WAIT_FRAC; retry++) { (void) tsleep((caddr_t)cd, PSOCK | PCATCH, "mcdsn1", hz/WAIT_FRAC); if ((r = mcd_getstat(sc, 1)) == -1) return EIO; if (r != -2) break; } if (cd->status & MCDDOOROPEN) { device_printf(sc->dev, "door is open\n"); return ENXIO; } if (!(cd->status & MCDDSKIN)) { device_printf(sc->dev, "no CD inside\n"); return ENXIO; } if (cd->status & MCDDSKCHNG) { device_printf(sc->dev, "CD not sensed\n"); return ENXIO; } if (mcdsize(dev) < 0) { device_printf(sc->dev, "failed to get disk size\n"); return ENXIO; } dev->si_bsize_phys = cd->blksize; cd->openflags = 1; cd->partflags |= MCDREADRAW; cd->flags |= MCDVALID; (void) mcd_lock_door(sc, MCD_LK_LOCK); if (!(cd->flags & MCDVALID)) return ENXIO; return (mcd_read_toc(sc)); } static int mcdclose(dev_t dev, int flags, int fmt, struct thread *td) { struct mcd_softc *sc; struct mcd_data *cd; sc = (struct mcd_softc *)dev->si_drv1; cd = &sc->data; if (!(cd->flags & MCDINIT) || !cd->openflags) return ENXIO; (void) mcd_lock_door(sc, MCD_LK_UNLOCK); cd->openflags = 0; cd->partflags &= ~MCDREADRAW; return 0; } static void mcdstrategy(struct bio *bp) { struct mcd_softc *sc; struct mcd_data *cd; int s; sc = (struct mcd_softc *)bp->bio_dev->si_drv1; cd = &sc->data; /* test validity */ /*MCD_TRACE("strategy: buf=0x%lx, unit=%ld, block#=%ld bcount=%ld\n", bp,unit,bp->bio_blkno,bp->bio_bcount);*/ if (bp->bio_blkno < 0) { device_printf(sc->dev, "strategy failure: blkno = %ld, bcount = %ld\n", (long)bp->bio_blkno, bp->bio_bcount); bp->bio_error = EINVAL; bp->bio_flags |= BIO_ERROR; goto bad; } /* if device invalidated (e.g. media change, door open), error */ if (!(cd->flags & MCDVALID)) { device_printf(sc->dev, "media changed\n"); bp->bio_error = EIO; goto bad; } /* read only */ if (!(bp->bio_cmd == BIO_READ)) { bp->bio_error = EROFS; goto bad; } /* no data to read */ if (bp->bio_bcount == 0) goto done; if (!(cd->flags & MCDTOC)) { bp->bio_error = EIO; goto bad; } bp->bio_pblkno = bp->bio_blkno; bp->bio_resid = 0; /* queue it */ s = splbio(); bioqdisksort(&cd->head, bp); splx(s); /* now check whether we can perform processing */ mcd_start(sc); return; bad: bp->bio_flags |= BIO_ERROR; done: bp->bio_resid = bp->bio_bcount; biodone(bp); return; } static void mcd_start(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; struct bio *bp; int s = splbio(); if (cd->flags & MCDMBXBSY) { splx(s); return; } bp = bioq_first(&cd->head); if (bp != 0) { /* block found to process, dequeue */ /*MCD_TRACE("mcd_start: found block bp=0x%x\n",bp,0,0,0);*/ bioq_remove(&cd->head, bp); cd->flags |= MCDMBXBSY; splx(s); } else { /* nothing to do */ splx(s); return; } cd->mbx.retry = MCD_RETRYS; cd->mbx.bp = bp; mcd_doread(sc, MCD_S_BEGIN,&(cd->mbx)); return; } static int mcdioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct thread *td) { struct mcd_softc *sc; struct mcd_data *cd; int retry,r; sc = (struct mcd_softc *)dev->si_drv1; cd = &sc->data; if (mcd_getstat(sc, 1) == -1) /* detect disk change too */ return EIO; MCD_TRACE("ioctl called 0x%lx\n", cmd); switch (cmd) { case CDIOCSETPATCH: case CDIOCGETVOL: case CDIOCSETVOL: case CDIOCSETMONO: case CDIOCSETSTERIO: case CDIOCSETMUTE: case CDIOCSETLEFT: case CDIOCSETRIGHT: return EINVAL; case CDIOCEJECT: return mcd_eject(sc); case CDIOCSETDEBUG: cd->debug = 1; return 0; case CDIOCCLRDEBUG: cd->debug = 0; return 0; case CDIOCRESET: return mcd_hard_reset(sc); case CDIOCALLOW: return mcd_lock_door(sc, MCD_LK_UNLOCK); case CDIOCPREVENT: return mcd_lock_door(sc, MCD_LK_LOCK); case CDIOCCLOSE: return mcd_inject(sc); } if (!(cd->flags & MCDVALID)) { if ( (cd->status & (MCDDSKCHNG|MCDDOOROPEN)) || !(cd->status & MCDDSKIN)) for (retry = 0; retry < DISK_SENSE_SECS * WAIT_FRAC; retry++) { (void) tsleep((caddr_t)cd, PSOCK | PCATCH, "mcdsn2", hz/WAIT_FRAC); if ((r = mcd_getstat(sc, 1)) == -1) return EIO; if (r != -2) break; } if ( (cd->status & (MCDDOOROPEN|MCDDSKCHNG)) || !(cd->status & MCDDSKIN) || mcdsize(dev) < 0 ) return ENXIO; cd->flags |= MCDVALID; cd->partflags |= MCDREADRAW; (void) mcd_lock_door(sc, MCD_LK_LOCK); if (!(cd->flags & MCDVALID)) return ENXIO; } switch (cmd) { case DIOCGMEDIASIZE: *(off_t *)addr = (off_t)cd->disksize * cd->blksize; return (0); break; case DIOCGSECTORSIZE: *(u_int *)addr = cd->blksize; return (0); break; case CDIOCPLAYTRACKS: return mcd_playtracks(sc, (struct ioc_play_track *) addr); case CDIOCPLAYBLOCKS: return mcd_playblocks(sc, (struct ioc_play_blocks *) addr); case CDIOCPLAYMSF: return mcd_playmsf(sc, (struct ioc_play_msf *) addr); case CDIOCREADSUBCHANNEL: return mcd_subchan(sc, (struct ioc_read_subchannel *) addr); case CDIOREADTOCHEADER: return mcd_toc_header(sc, (struct ioc_toc_header *) addr); case CDIOREADTOCENTRYS: return mcd_toc_entrys(sc, (struct ioc_read_toc_entry *) addr); case CDIOCRESUME: return mcd_resume(sc); case CDIOCPAUSE: return mcd_pause(sc); case CDIOCSTART: if (mcd_setmode(sc, MCD_MD_COOKED) != 0) return EIO; return 0; case CDIOCSTOP: return mcd_stop(sc); default: return ENOTTY; } /*NOTREACHED*/ } static int mcdsize(dev_t dev) { struct mcd_softc *sc; struct mcd_data *cd; int size; sc = (struct mcd_softc *)dev->si_drv1; cd = &sc->data; if (mcd_volinfo(sc) == 0) { cd->blksize = MCDBLK; size = msf2hsg(cd->volinfo.vol_msf, 0); cd->disksize = size * (MCDBLK/DEV_BSIZE); return 0; } return -1; } /*************************************************************** * lower level of driver starts here **************************************************************/ #ifdef NOTDEF static char irqs[] = { 0x00,0x00,0x10,0x20,0x00,0x30,0x00,0x00, 0x00,0x10,0x40,0x50,0x00,0x00,0x00,0x00 }; static char drqs[] = { 0x00,0x01,0x00,0x03,0x00,0x05,0x06,0x07, }; #endif #ifdef NOT_YET static void mcd_configure(struct mcd_softc *sc) { MCD_WRITE(sc, MCD_REG_CONFIG, sc->data.config); } #endif /* Wait for non-busy - return 0 on timeout */ static int twiddle_thumbs(struct mcd_softc *sc, int count, char *whine) { int i; for (i = 0; i < count; i++) { if (!(MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL)) return 1; } if (bootverbose) device_printf(sc->dev, "timeout %s\n", whine); return 0; } /* check to see if a Mitsumi CD-ROM is attached to the ISA bus */ int mcd_probe(struct mcd_softc *sc) { int unit; int i, j; unsigned char stbytes[3]; unit = device_get_unit(sc->dev); sc->data.flags = MCDPROBING; #ifdef NOTDEF /* get irq/drq configuration word */ sc->data.config = irqs[dev->id_irq]; /* | drqs[dev->id_drq];*/ #else sc->data.config = 0; #endif /* send a reset */ MCD_WRITE(sc, MCD_FLAGS, M_RESET); /* * delay awhile by getting any pending garbage (old data) and * throwing it away. */ for (i = 1000000; i != 0; i--) (void)MCD_READ(sc, MCD_FLAGS); /* Get status */ MCD_WRITE(sc, MCD_DATA, MCD_CMDGETSTAT); if (!twiddle_thumbs(sc, 1000000, "getting status")) return (ENXIO); /* Timeout */ /* Get version information */ MCD_WRITE(sc, MCD_DATA, MCD_CMDCONTINFO); for (j = 0; j < 3; j++) { if (!twiddle_thumbs(sc, 3000, "getting version info")) return (ENXIO); stbytes[j] = (MCD_READ(sc, MCD_DATA) & 0xFF); } if (stbytes[1] == stbytes[2]) return (ENXIO); if (stbytes[2] >= 4 || stbytes[1] != 'M') { MCD_WRITE(sc, MCD_CTRL, M_PICKLE); sc->data.flags |= MCDNEWMODEL; } sc->data.read_command = MCD_CMDSINGLESPEEDREAD; switch (stbytes[1]) { case 'M': if (stbytes[2] <= 2) { sc->data.type = MCD_TYPE_LU002S; sc->data.name = "Mitsumi LU002S"; } else if (stbytes[2] <= 5) { sc->data.type = MCD_TYPE_LU005S; sc->data.name = "Mitsumi LU005S"; } else { sc->data.type = MCD_TYPE_LU006S; sc->data.name = "Mitsumi LU006S"; } break; case 'F': sc->data.type = MCD_TYPE_FX001; sc->data.name = "Mitsumi FX001"; break; case 'D': sc->data.type = MCD_TYPE_FX001D; sc->data.name = "Mitsumi FX001D"; sc->data.read_command = MCD_CMDDOUBLESPEEDREAD; break; default: sc->data.type = MCD_TYPE_UNKNOWN; sc->data.name = "Mitsumi ???"; break; } if (bootverbose) device_printf(sc->dev, "type %s, version info: %c %x\n", sc->data.name, stbytes[1], stbytes[2]); return 0; } static int mcd_waitrdy(struct mcd_softc *sc, int dly) { int i; /* wait until flag port senses status ready */ for (i=0; idev, "timeout getreply\n"); return -1; } /* get the data */ return MCD_READ(sc, MCD_REG_STATUS) & 0xFF; } static int mcd_getstat(struct mcd_softc *sc, int sflg) { int i; struct mcd_data *cd = &sc->data; /* get the status */ if (sflg) MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDGETSTAT); i = mcd_getreply(sc, DELAY_GETREPLY); if (i<0 || (i & MCD_ST_CMDCHECK)) { cd->curr_mode = MCD_MD_UNKNOWN; return -1; } cd->status = i; if (mcd_setflags(sc) < 0) return -2; return cd->status; } static int mcd_setflags(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; /* check flags */ if ( (cd->status & (MCDDSKCHNG|MCDDOOROPEN)) || !(cd->status & MCDDSKIN)) { MCD_TRACE("setflags: sensed DSKCHNG or DOOROPEN or !DSKIN\n"); mcd_soft_reset(sc); return -1; } if (cd->status & MCDAUDIOBSY) cd->audio_status = CD_AS_PLAY_IN_PROGRESS; else if (cd->audio_status == CD_AS_PLAY_IN_PROGRESS) cd->audio_status = CD_AS_PLAY_COMPLETED; return 0; } static int mcd_get(struct mcd_softc *sc, char *buf, int nmax) { int i,k; for (i=0; idev, "timeout mcd_get\n"); return -1; } buf[i] = k; } return i; } static int mcd_send(struct mcd_softc *sc, int cmd,int nretrys) { int i,k=0; /*MCD_TRACE("mcd_send: command = 0x%02x\n",cmd,0,0,0);*/ for (i=0; idev, "media changed\n"); return -1; } if (i == nretrys) { device_printf(sc->dev, "mcd_send retry cnt exceeded\n"); return -1; } /*MCD_TRACE("mcd_send: done\n",0,0,0,0);*/ return 0; } static void hsg2msf(int hsg, bcd_t *msf) { hsg += 150; F_msf(msf) = bin2bcd(hsg % 75); hsg /= 75; S_msf(msf) = bin2bcd(hsg % 60); hsg /= 60; M_msf(msf) = bin2bcd(hsg); } static int msf2hsg(bcd_t *msf, int relative) { return (bcd2bin(M_msf(msf)) * 60 + bcd2bin(S_msf(msf))) * 75 + bcd2bin(F_msf(msf)) - (!relative) * 150; } static int mcd_volinfo(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; /* Just return if we already have it */ if (cd->flags & MCDVOLINFO) return 0; /*MCD_TRACE("mcd_volinfo: enter\n",0,0,0,0);*/ /* send volume info command */ if (mcd_send(sc, MCD_CMDGETVOLINFO,MCD_RETRYS) < 0) return EIO; /* get data */ if (mcd_get(sc, (char*) &cd->volinfo,sizeof(struct mcd_volinfo)) < 0) { device_printf(sc->dev, "mcd_volinfo: error read data\n"); return EIO; } if (cd->volinfo.trk_low > 0 && cd->volinfo.trk_high >= cd->volinfo.trk_low ) { cd->flags |= MCDVOLINFO; /* volinfo is OK */ return 0; } return EINVAL; } /* state machine to process read requests * initialize with MCD_S_BEGIN: calculate sizes, and read status * MCD_S_WAITSTAT: wait for status reply, set mode * MCD_S_WAITMODE: waits for status reply from set mode, set read command * MCD_S_WAITREAD: wait for read ready, read data */ static void mcd_timeout(void *arg) { struct mcd_softc *sc; sc = (struct mcd_softc *)arg; mcd_doread(sc, sc->ch_state, sc->ch_mbxsave); } static void mcd_doread(struct mcd_softc *sc, int state, struct mcd_mbx *mbxin) { struct mcd_mbx *mbx; struct bio *bp; struct mcd_data *cd; int rm, i, k; struct mcd_read2 rbuf; int blknum; caddr_t addr; mbx = (state!=MCD_S_BEGIN) ? sc->ch_mbxsave : mbxin; bp = mbx->bp; cd = &sc->data; loop: switch (state) { case MCD_S_BEGIN: mbx = sc->ch_mbxsave = mbxin; case MCD_S_BEGIN1: retry_status: /* get status */ MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDGETSTAT); mbx->count = RDELAY_WAITSTAT; sc->ch_state = MCD_S_WAITSTAT; sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */ return; case MCD_S_WAITSTAT: sc->ch_state = MCD_S_WAITSTAT; untimeout(mcd_timeout,(caddr_t)sc, sc->ch); if (mbx->count-- >= 0) { if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) { sc->ch_state = MCD_S_WAITSTAT; timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */ return; } cd->status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF; if (cd->status & MCD_ST_CMDCHECK) goto retry_status; if (mcd_setflags(sc) < 0) goto changed; MCD_TRACE("got WAITSTAT delay=%d\n", RDELAY_WAITSTAT-mbx->count); /* reject, if audio active */ if (cd->status & MCDAUDIOBSY) { device_printf(sc->dev, "audio is active\n"); goto readerr; } retry_mode: /* to check for raw/cooked mode */ if (cd->flags & MCDREADRAW) { rm = MCD_MD_RAW; mbx->sz = MCDRBLK; } else { rm = MCD_MD_COOKED; mbx->sz = cd->blksize; } if (rm == cd->curr_mode) goto modedone; mbx->count = RDELAY_WAITMODE; cd->curr_mode = MCD_MD_UNKNOWN; mbx->mode = rm; MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDSETMODE); MCD_WRITE(sc, MCD_REG_COMMAND, rm); sc->ch_state = MCD_S_WAITMODE; sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */ return; } else { device_printf(sc->dev, "timeout getstatus\n"); goto readerr; } case MCD_S_WAITMODE: sc->ch_state = MCD_S_WAITMODE; untimeout(mcd_timeout, (caddr_t)sc, sc->ch); if (mbx->count-- < 0) { device_printf(sc->dev, "timeout set mode\n"); goto readerr; } if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) { sc->ch_state = MCD_S_WAITMODE; sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); return; } cd->status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF; if (cd->status & MCD_ST_CMDCHECK) { cd->curr_mode = MCD_MD_UNKNOWN; goto retry_mode; } if (mcd_setflags(sc) < 0) goto changed; cd->curr_mode = mbx->mode; MCD_TRACE("got WAITMODE delay=%d\n", RDELAY_WAITMODE-mbx->count); modedone: /* for first block */ mbx->nblk = (bp->bio_bcount + (mbx->sz-1)) / mbx->sz; mbx->skip = 0; nextblock: blknum = (bp->bio_blkno / (mbx->sz/DEV_BSIZE)) + mbx->skip/mbx->sz; MCD_TRACE("mcd_doread: read blknum=%d for bp=%p\n", blknum, bp); /* build parameter block */ hsg2msf(blknum,rbuf.start_msf); retry_read: /* send the read command */ disable_intr(); MCD_WRITE(sc, MCD_REG_COMMAND, cd->read_command); MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[0]); MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[1]); MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[2]); MCD_WRITE(sc, MCD_REG_COMMAND, 0); MCD_WRITE(sc, MCD_REG_COMMAND, 0); MCD_WRITE(sc, MCD_REG_COMMAND, 1); enable_intr(); /* Spin briefly (<= 2ms) to avoid missing next block */ for (i = 0; i < 20; i++) { k = MCD_READ(sc, MCD_FLAGS); if (!(k & MFL_DATA_NOT_AVAIL)) goto got_it; DELAY(100); } mbx->count = RDELAY_WAITREAD; sc->ch_state = MCD_S_WAITREAD; sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */ return; case MCD_S_WAITREAD: sc->ch_state = MCD_S_WAITREAD; untimeout(mcd_timeout, (caddr_t)sc, sc->ch); if (mbx->count-- > 0) { k = MCD_READ(sc, MCD_FLAGS); if (!(k & MFL_DATA_NOT_AVAIL)) { /* XXX */ MCD_TRACE("got data delay=%d\n", RDELAY_WAITREAD-mbx->count); got_it: /* data is ready */ addr = bp->bio_data + mbx->skip; MCD_WRITE(sc, MCD_REG_CTL2,0x04); /* XXX */ for (i=0; isz; i++) *addr++ = MCD_READ(sc, MCD_REG_RDATA); MCD_WRITE(sc, MCD_REG_CTL2,0x0c); /* XXX */ k = MCD_READ(sc, MCD_FLAGS); /* If we still have some junk, read it too */ if (!(k & MFL_DATA_NOT_AVAIL)) { MCD_WRITE(sc, MCD_REG_CTL2, 0x04); /* XXX */ (void)MCD_READ(sc, MCD_REG_RDATA); (void)MCD_READ(sc, MCD_REG_RDATA); MCD_WRITE(sc, MCD_REG_CTL2, 0x0c); /* XXX */ } if (--mbx->nblk > 0) { mbx->skip += mbx->sz; goto nextblock; } /* return buffer */ bp->bio_resid = 0; biodone(bp); cd->flags &= ~(MCDMBXBSY|MCDREADRAW); mcd_start(sc); return; } if (!(k & MFL_STATUS_NOT_AVAIL)) { cd->status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF; if (cd->status & MCD_ST_CMDCHECK) goto retry_read; if (mcd_setflags(sc) < 0) goto changed; } sc->ch_state = MCD_S_WAITREAD; sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */ return; } else { device_printf(sc->dev, "timeout read data\n"); goto readerr; } } readerr: if (mbx->retry-- > 0) { device_printf(sc->dev, "retrying\n"); state = MCD_S_BEGIN1; goto loop; } harderr: /* invalidate the buffer */ bp->bio_flags |= BIO_ERROR; bp->bio_resid = bp->bio_bcount; biodone(bp); cd->flags &= ~(MCDMBXBSY|MCDREADRAW); mcd_start(sc); return; changed: device_printf(sc->dev, "media changed\n"); goto harderr; #ifdef NOTDEF device_printf(sc->dev, "unit timeout, resetting\n"); MCD_WRITE(sc, MCD_REG_RESET, MCD_CMDRESET); DELAY(300000); (void)mcd_getstat(sc, 1); (void)mcd_getstat(sc, 1); /*cd->status &= ~MCDDSKCHNG; */ cd->debug = 1; /* preventive set debug mode */ #endif } static int mcd_lock_door(struct mcd_softc *sc, int lock) { MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDLOCKDRV); MCD_WRITE(sc, MCD_REG_COMMAND, lock); if (mcd_getstat(sc, 0) == -1) return EIO; return 0; } static int mcd_close_tray(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; int retry, r; if (mcd_getstat(sc, 1) == -1) return EIO; if (cd->status & MCDDOOROPEN) { MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDCLOSETRAY); for (retry = 0; retry < CLOSE_TRAY_SECS * WAIT_FRAC; retry++) { if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) (void) tsleep((caddr_t)cd, PSOCK | PCATCH, "mcdcls", hz/WAIT_FRAC); else { if ((r = mcd_getstat(sc, 0)) == -1) return EIO; return 0; } } return ENXIO; } return 0; } static int mcd_eject(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; int r; if (mcd_getstat(sc, 1) == -1) /* detect disk change too */ return EIO; if (cd->status & MCDDOOROPEN) return 0; if ((r = mcd_stop(sc)) == EIO) return r; MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDEJECTDISK); if (mcd_getstat(sc, 0) == -1) return EIO; return 0; } static int mcd_inject(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; if (mcd_getstat(sc, 1) == -1) /* detect disk change too */ return EIO; if (cd->status & MCDDOOROPEN) return mcd_close_tray(sc); return 0; } static int mcd_hard_reset(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; MCD_WRITE(sc, MCD_REG_RESET, MCD_CMDRESET); cd->curr_mode = MCD_MD_UNKNOWN; cd->audio_status = CD_AS_AUDIO_INVALID; return 0; } static void mcd_soft_reset(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; cd->flags &= (MCDINIT|MCDPROBING|MCDNEWMODEL); cd->curr_mode = MCD_MD_UNKNOWN; cd->partflags = 0; cd->audio_status = CD_AS_AUDIO_INVALID; } static int mcd_setmode(struct mcd_softc *sc, int mode) { struct mcd_data *cd = &sc->data; int retry, st; if (cd->curr_mode == mode) return 0; if (cd->debug) device_printf(sc->dev, "setting mode to %d\n", mode); for(retry=0; retrycurr_mode = MCD_MD_UNKNOWN; MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDSETMODE); MCD_WRITE(sc, MCD_REG_COMMAND, mode); if ((st = mcd_getstat(sc, 0)) >= 0) { cd->curr_mode = mode; return 0; } if (st == -2) { device_printf(sc->dev, "media changed\n"); break; } } return -1; } static int mcd_toc_header(struct mcd_softc *sc, struct ioc_toc_header *th) { struct mcd_data *cd = &sc->data; int r; if ((r = mcd_volinfo(sc)) != 0) return r; th->starting_track = bcd2bin(cd->volinfo.trk_low); th->ending_track = bcd2bin(cd->volinfo.trk_high); th->len = 2 * sizeof(u_char) /* start & end tracks */ + (th->ending_track + 1 - th->starting_track + 1) * sizeof(struct cd_toc_entry); return 0; } static int mcd_read_toc(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; struct ioc_toc_header th; struct mcd_qchninfo q; int rc, trk, idx, retry; /* Only read TOC if needed */ if (cd->flags & MCDTOC) return 0; if (cd->debug) device_printf(sc->dev, "reading toc header\n"); if ((rc = mcd_toc_header(sc, &th)) != 0) return rc; if (mcd_send(sc, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0) return EIO; if (mcd_setmode(sc, MCD_MD_TOC) != 0) return EIO; if (cd->debug) device_printf(sc->dev, "get_toc reading qchannel info\n"); for(trk=th.starting_track; trk<=th.ending_track; trk++) cd->toc[trk].idx_no = 0; trk = th.ending_track - th.starting_track + 1; for(retry=0; retry<600 && trk>0; retry++) { if (mcd_getqchan(sc, &q) < 0) break; idx = bcd2bin(q.idx_no); if (idx>=th.starting_track && idx<=th.ending_track && q.trk_no==0) { if (cd->toc[idx].idx_no == 0) { cd->toc[idx] = q; trk--; } } } if (mcd_setmode(sc, MCD_MD_COOKED) != 0) return EIO; if (trk != 0) return ENXIO; /* add a fake last+1 */ idx = th.ending_track + 1; cd->toc[idx].control = cd->toc[idx-1].control; cd->toc[idx].addr_type = cd->toc[idx-1].addr_type; cd->toc[idx].trk_no = 0; cd->toc[idx].idx_no = MCD_LASTPLUS1; cd->toc[idx].hd_pos_msf[0] = cd->volinfo.vol_msf[0]; cd->toc[idx].hd_pos_msf[1] = cd->volinfo.vol_msf[1]; cd->toc[idx].hd_pos_msf[2] = cd->volinfo.vol_msf[2]; if (cd->debug) { int i; for (i = th.starting_track; i <= idx; i++) device_printf(sc->dev, "trk %d idx %d pos %d %d %d\n", i, cd->toc[i].idx_no > 0x99 ? cd->toc[i].idx_no : bcd2bin(cd->toc[i].idx_no), bcd2bin(cd->toc[i].hd_pos_msf[0]), bcd2bin(cd->toc[i].hd_pos_msf[1]), bcd2bin(cd->toc[i].hd_pos_msf[2])); } cd->flags |= MCDTOC; return 0; } #if 0 static int mcd_toc_entry(struct mcd_softc *sc, struct ioc_read_toc_single_entry *te) { struct mcd_data *cd = &sc->data; struct ioc_toc_header th; int rc, trk; if (te->address_format != CD_MSF_FORMAT && te->address_format != CD_LBA_FORMAT) return EINVAL; /* Copy the toc header */ if ((rc = mcd_toc_header(sc, &th)) != 0) return rc; /* verify starting track */ trk = te->track; if (trk == 0) trk = th.starting_track; else if (trk == MCD_LASTPLUS1) trk = th.ending_track + 1; else if (trk < th.starting_track || trk > th.ending_track + 1) return EINVAL; /* Make sure we have a valid toc */ if ((rc=mcd_read_toc(sc)) != 0) return rc; /* Copy the TOC data. */ if (cd->toc[trk].idx_no == 0) return EIO; te->entry.control = cd->toc[trk].control; te->entry.addr_type = cd->toc[trk].addr_type; te->entry.track = cd->toc[trk].idx_no > 0x99 ? cd->toc[trk].idx_no : bcd2bin(cd->toc[trk].idx_no); switch (te->address_format) { case CD_MSF_FORMAT: te->entry.addr.msf.unused = 0; te->entry.addr.msf.minute = bcd2bin(cd->toc[trk].hd_pos_msf[0]); te->entry.addr.msf.second = bcd2bin(cd->toc[trk].hd_pos_msf[1]); te->entry.addr.msf.frame = bcd2bin(cd->toc[trk].hd_pos_msf[2]); break; case CD_LBA_FORMAT: te->entry.addr.lba = htonl(msf2hsg(cd->toc[trk].hd_pos_msf, 0)); break; } return 0; } #endif static int mcd_toc_entrys(struct mcd_softc *sc, struct ioc_read_toc_entry *te) { struct mcd_data *cd = &sc->data; struct cd_toc_entry entries[MCD_MAXTOCS]; struct ioc_toc_header th; int rc, n, trk, len; if ( te->data_len < sizeof(entries[0]) || (te->data_len % sizeof(entries[0])) != 0 || (te->address_format != CD_MSF_FORMAT && te->address_format != CD_LBA_FORMAT) ) return EINVAL; /* Copy the toc header */ if ((rc = mcd_toc_header(sc, &th)) != 0) return rc; /* verify starting track */ trk = te->starting_track; if (trk == 0) trk = th.starting_track; else if (trk == MCD_LASTPLUS1) trk = th.ending_track + 1; else if (trk < th.starting_track || trk > th.ending_track + 1) return EINVAL; len = ((th.ending_track + 1 - trk) + 1) * sizeof(entries[0]); if (te->data_len < len) len = te->data_len; if (len > sizeof(entries)) return EINVAL; /* Make sure we have a valid toc */ if ((rc=mcd_read_toc(sc)) != 0) return rc; /* Copy the TOC data. */ for (n = 0; len > 0 && trk <= th.ending_track + 1; trk++) { if (cd->toc[trk].idx_no == 0) continue; entries[n].control = cd->toc[trk].control; entries[n].addr_type = cd->toc[trk].addr_type; entries[n].track = cd->toc[trk].idx_no > 0x99 ? cd->toc[trk].idx_no : bcd2bin(cd->toc[trk].idx_no); switch (te->address_format) { case CD_MSF_FORMAT: entries[n].addr.msf.unused = 0; entries[n].addr.msf.minute = bcd2bin(cd->toc[trk].hd_pos_msf[0]); entries[n].addr.msf.second = bcd2bin(cd->toc[trk].hd_pos_msf[1]); entries[n].addr.msf.frame = bcd2bin(cd->toc[trk].hd_pos_msf[2]); break; case CD_LBA_FORMAT: entries[n].addr.lba = htonl(msf2hsg(cd->toc[trk].hd_pos_msf, 0)); break; } len -= sizeof(struct cd_toc_entry); n++; } /* copy the data back */ return copyout(entries, te->data, n * sizeof(struct cd_toc_entry)); } static int mcd_stop(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; /* Verify current status */ if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS && cd->audio_status != CD_AS_PLAY_PAUSED && cd->audio_status != CD_AS_PLAY_COMPLETED) { if (cd->debug) device_printf(sc->dev, "stop attempted when not playing, audio status %d\n", cd->audio_status); return EINVAL; } if (cd->audio_status == CD_AS_PLAY_IN_PROGRESS) if (mcd_send(sc, MCD_CMDSTOPAUDIO, MCD_RETRYS) < 0) return EIO; cd->audio_status = CD_AS_PLAY_COMPLETED; return 0; } static int mcd_getqchan(struct mcd_softc *sc, struct mcd_qchninfo *q) { struct mcd_data *cd = &sc->data; if (mcd_send(sc, MCD_CMDGETQCHN, MCD_RETRYS) < 0) return -1; if (mcd_get(sc, (char *) q, sizeof(struct mcd_qchninfo)) < 0) return -1; if (cd->debug) { device_printf(sc->dev, "getqchan control=0x%x addr_type=0x%x trk=%d ind=%d ttm=%d:%d.%d dtm=%d:%d.%d\n", q->control, q->addr_type, bcd2bin(q->trk_no), bcd2bin(q->idx_no), bcd2bin(q->trk_size_msf[0]), bcd2bin(q->trk_size_msf[1]), bcd2bin(q->trk_size_msf[2]), bcd2bin(q->hd_pos_msf[0]), bcd2bin(q->hd_pos_msf[1]), bcd2bin(q->hd_pos_msf[2])); } return 0; } static int mcd_subchan(struct mcd_softc *sc, struct ioc_read_subchannel *sch) { struct mcd_data *cd = &sc->data; struct mcd_qchninfo q; struct cd_sub_channel_info data; int lba; if (cd->debug) device_printf(sc->dev, "subchan af=%d, df=%d\n", sch->address_format, sch->data_format); if (sch->address_format != CD_MSF_FORMAT && sch->address_format != CD_LBA_FORMAT) return EINVAL; if (sch->data_format != CD_CURRENT_POSITION && sch->data_format != CD_MEDIA_CATALOG) return EINVAL; if (mcd_setmode(sc, MCD_MD_COOKED) != 0) return EIO; if (mcd_getqchan(sc, &q) < 0) return EIO; data.header.audio_status = cd->audio_status; data.what.position.data_format = sch->data_format; switch (sch->data_format) { case CD_MEDIA_CATALOG: data.what.media_catalog.mc_valid = 1; data.what.media_catalog.mc_number[0] = '\0'; break; case CD_CURRENT_POSITION: data.what.position.control = q.control; data.what.position.addr_type = q.addr_type; data.what.position.track_number = bcd2bin(q.trk_no); data.what.position.index_number = bcd2bin(q.idx_no); switch (sch->address_format) { case CD_MSF_FORMAT: data.what.position.reladdr.msf.unused = 0; data.what.position.reladdr.msf.minute = bcd2bin(q.trk_size_msf[0]); data.what.position.reladdr.msf.second = bcd2bin(q.trk_size_msf[1]); data.what.position.reladdr.msf.frame = bcd2bin(q.trk_size_msf[2]); data.what.position.absaddr.msf.unused = 0; data.what.position.absaddr.msf.minute = bcd2bin(q.hd_pos_msf[0]); data.what.position.absaddr.msf.second = bcd2bin(q.hd_pos_msf[1]); data.what.position.absaddr.msf.frame = bcd2bin(q.hd_pos_msf[2]); break; case CD_LBA_FORMAT: lba = msf2hsg(q.trk_size_msf, 1); /* * Pre-gap has index number of 0, and decreasing MSF * address. Must be converted to negative LBA, per * SCSI spec. */ if (data.what.position.index_number == 0) lba = -lba; data.what.position.reladdr.lba = htonl(lba); data.what.position.absaddr.lba = htonl(msf2hsg(q.hd_pos_msf, 0)); break; } break; } return copyout(&data, sch->data, min(sizeof(struct cd_sub_channel_info), sch->data_len)); } static int mcd_playmsf(struct mcd_softc *sc, struct ioc_play_msf *p) { struct mcd_data *cd = &sc->data; struct mcd_read2 pb; if (cd->debug) device_printf(sc->dev, "playmsf: from %d:%d.%d to %d:%d.%d\n", p->start_m, p->start_s, p->start_f, p->end_m, p->end_s, p->end_f); if ((p->start_m * 60 * 75 + p->start_s * 75 + p->start_f) >= (p->end_m * 60 * 75 + p->end_s * 75 + p->end_f) || (p->end_m * 60 * 75 + p->end_s * 75 + p->end_f) > M_msf(cd->volinfo.vol_msf) * 60 * 75 + S_msf(cd->volinfo.vol_msf) * 75 + F_msf(cd->volinfo.vol_msf)) return EINVAL; pb.start_msf[0] = bin2bcd(p->start_m); pb.start_msf[1] = bin2bcd(p->start_s); pb.start_msf[2] = bin2bcd(p->start_f); pb.end_msf[0] = bin2bcd(p->end_m); pb.end_msf[1] = bin2bcd(p->end_s); pb.end_msf[2] = bin2bcd(p->end_f); if (mcd_setmode(sc, MCD_MD_COOKED) != 0) return EIO; return mcd_play(sc, &pb); } static int mcd_playtracks(struct mcd_softc *sc, struct ioc_play_track *pt) { struct mcd_data *cd = &sc->data; struct mcd_read2 pb; int a = pt->start_track; int z = pt->end_track; int rc, i; if ((rc = mcd_read_toc(sc)) != 0) return rc; if (cd->debug) device_printf(sc->dev, "playtracks from %d:%d to %d:%d\n", a, pt->start_index, z, pt->end_index); if ( a < bcd2bin(cd->volinfo.trk_low) || a > bcd2bin(cd->volinfo.trk_high) || a > z || z < bcd2bin(cd->volinfo.trk_low) || z > bcd2bin(cd->volinfo.trk_high)) return EINVAL; for (i = 0; i < 3; i++) { pb.start_msf[i] = cd->toc[a].hd_pos_msf[i]; pb.end_msf[i] = cd->toc[z+1].hd_pos_msf[i]; } if (mcd_setmode(sc, MCD_MD_COOKED) != 0) return EIO; return mcd_play(sc, &pb); } static int mcd_playblocks(struct mcd_softc *sc, struct ioc_play_blocks *p) { struct mcd_data *cd = &sc->data; struct mcd_read2 pb; if (cd->debug) device_printf(sc->dev, "playblocks: blkno %d length %d\n", p->blk, p->len); if (p->blk > cd->disksize || p->len > cd->disksize || p->blk < 0 || p->len < 0 || (p->blk + p->len) > cd->disksize) return EINVAL; hsg2msf(p->blk, pb.start_msf); hsg2msf(p->blk + p->len, pb.end_msf); if (mcd_setmode(sc, MCD_MD_COOKED) != 0) return EIO; return mcd_play(sc, &pb); } static int mcd_play(struct mcd_softc *sc, struct mcd_read2 *pb) { struct mcd_data *cd = &sc->data; int retry, st = -1, status; cd->lastpb = *pb; for(retry=0; retrystart_msf[0]); MCD_WRITE(sc, MCD_REG_COMMAND, pb->start_msf[1]); MCD_WRITE(sc, MCD_REG_COMMAND, pb->start_msf[2]); MCD_WRITE(sc, MCD_REG_COMMAND, pb->end_msf[0]); MCD_WRITE(sc, MCD_REG_COMMAND, pb->end_msf[1]); MCD_WRITE(sc, MCD_REG_COMMAND, pb->end_msf[2]); enable_intr(); status=mcd_getstat(sc, 0); if (status == -1) continue; else if (status != -2) st = 0; break; } if (status == -2) { device_printf(sc->dev, "media changed\n"); return ENXIO; } if (cd->debug) device_printf(sc->dev, "mcd_play retry=%d, status=0x%02x\n", retry, status); if (st < 0) return ENXIO; cd->audio_status = CD_AS_PLAY_IN_PROGRESS; return 0; } static int mcd_pause(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; struct mcd_qchninfo q; int rc; /* Verify current status */ if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS && cd->audio_status != CD_AS_PLAY_PAUSED) { if (cd->debug) device_printf(sc->dev, "pause attempted when not playing, audio status %d\n", cd->audio_status); return EINVAL; } /* Get the current position */ if (mcd_getqchan(sc, &q) < 0) return EIO; /* Copy it into lastpb */ cd->lastpb.start_msf[0] = q.hd_pos_msf[0]; cd->lastpb.start_msf[1] = q.hd_pos_msf[1]; cd->lastpb.start_msf[2] = q.hd_pos_msf[2]; /* Stop playing */ if ((rc=mcd_stop(sc)) != 0) return rc; /* Set the proper status and exit */ cd->audio_status = CD_AS_PLAY_PAUSED; return 0; } static int mcd_resume(struct mcd_softc *sc) { struct mcd_data *cd = &sc->data; if (cd->audio_status != CD_AS_PLAY_PAUSED) return EINVAL; return mcd_play(sc, &cd->lastpb); }