/* $OpenBSD: mcd.c,v 1.17 1996/09/20 06:08:10 deraadt Exp $ */ /* $NetBSD: mcd.c,v 1.49 1996/05/12 23:53:11 mycroft Exp $ */ /* * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 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 product includes software developed by Charles M. Hannum. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Copyright 1993 by Holger Veit (data part) * Copyright 1993 by Brian Moore (audio part) * 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. */ /*static 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 #include #include #include #include #include #include #include #ifndef MCDDEBUG #define MCD_TRACE(fmt,a,b,c,d) #else #define MCD_TRACE(fmt,a,b,c,d) {if (sc->debug) {printf("%s: st=%02x: ", sc->sc_dev.dv_xname, sc->status); printf(fmt,a,b,c,d);}} #endif #define MCDPART(dev) DISKPART(dev) #define MCDUNIT(dev) DISKUNIT(dev) /* toc */ #define MCD_MAXTOCS 104 /* from the Linux driver */ struct mcd_mbx { int retry, count; struct buf *bp; daddr_t blkno; int nblk; int sz; u_long skip; int state; #define MCD_S_IDLE 0 #define MCD_S_BEGIN 1 #define MCD_S_WAITMODE 2 #define MCD_S_WAITREAD 3 int mode; }; struct mcd_softc { struct device sc_dev; struct disk sc_dk; void *sc_ih; int iobase; int irq, drq; char *type; u_char readcmd; u_char attached; int flags; #define MCDF_LOCKED 0x01 #define MCDF_WANTED 0x02 #define MCDF_WLABEL 0x04 /* label is writable */ #define MCDF_LABELLING 0x08 /* writing label */ #define MCDF_LOADED 0x10 /* parameters loaded */ #define MCDF_EJECTING 0x20 /* please eject at close */ short status; short audio_status; int blksize; u_long disksize; struct mcd_volinfo volinfo; union mcd_qchninfo toc[MCD_MAXTOCS]; struct mcd_command lastpb; struct mcd_mbx mbx; int lastmode; #define MCD_MD_UNKNOWN -1 int lastupc; #define MCD_UPC_UNKNOWN -1 int debug; struct buf buf_queue; }; /* prototypes */ /* XXX does not belong here */ cdev_decl(mcd); bdev_decl(mcd); static int bcd2bin __P((bcd_t)); static bcd_t bin2bcd __P((int)); static void hsg2msf __P((int, bcd_t *)); static daddr_t msf2hsg __P((bcd_t *, int)); int mcd_playtracks __P((struct mcd_softc *, struct ioc_play_track *)); int mcd_playmsf __P((struct mcd_softc *, struct ioc_play_msf *)); int mcd_playblocks __P((struct mcd_softc *, struct ioc_play_blocks *)); int mcd_stop __P((struct mcd_softc *)); int mcd_eject __P((struct mcd_softc *)); int mcd_read_subchannel __P((struct mcd_softc *, struct ioc_read_subchannel *)); int mcd_pause __P((struct mcd_softc *)); int mcd_resume __P((struct mcd_softc *)); int mcd_toc_header __P((struct mcd_softc *, struct ioc_toc_header *)); int mcd_toc_entries __P((struct mcd_softc *, struct ioc_read_toc_entry *)); int mcd_getreply __P((struct mcd_softc *)); int mcd_getstat __P((struct mcd_softc *)); int mcd_getresult __P((struct mcd_softc *, struct mcd_result *)); void mcd_setflags __P((struct mcd_softc *)); int mcd_get __P((struct mcd_softc *, char *, int)); int mcd_send __P((struct mcd_softc *, struct mcd_mbox *, int)); int mcdintr __P((void *)); void mcd_soft_reset __P((struct mcd_softc *)); int mcd_hard_reset __P((struct mcd_softc *)); int mcd_setmode __P((struct mcd_softc *, int)); int mcd_setupc __P((struct mcd_softc *, int)); int mcd_read_toc __P((struct mcd_softc *)); int mcd_getqchan __P((struct mcd_softc *, union mcd_qchninfo *, int)); int mcd_setlock __P((struct mcd_softc *, int)); int mcdprobe __P((struct device *, void *, void *)); void mcdattach __P((struct device *, struct device *, void *)); struct cfattach mcd_ca = { sizeof(struct mcd_softc), mcdprobe, mcdattach }; struct cfdriver mcd_cd = { NULL, "mcd", DV_DISK }; void mcdgetdisklabel __P((struct mcd_softc *)); int mcd_get_parms __P((struct mcd_softc *)); void mcdstrategy __P((struct buf *)); void mcdstart __P((struct mcd_softc *)); int mcdlock __P((struct mcd_softc *)); void mcdunlock __P((struct mcd_softc *)); void mcd_pseudointr __P((void *)); struct dkdriver mcddkdriver = { mcdstrategy }; #define MCD_RETRIES 3 #define MCD_RDRETRIES 3 /* several delays */ #define RDELAY_WAITMODE 300 #define RDELAY_WAITREAD 800 #define DELAY_GRANULARITY 25 /* 25us */ #define DELAY_GETREPLY 100000 /* 100000 * 25us */ void mcdattach(parent, self, aux) struct device *parent, *self; void *aux; { struct mcd_softc *sc = (void *)self; struct isa_attach_args *ia = aux; struct mcd_mbox mbx; /* * Initialize and attach the disk structure. */ sc->sc_dk.dk_driver = &mcddkdriver; sc->sc_dk.dk_name = sc->sc_dev.dv_xname; disk_attach(&sc->sc_dk); dk_establish(&sc->sc_dk, &sc->sc_dev); printf(": model %s\n", sc->type != 0 ? sc->type : "unknown"); (void) mcd_setlock(sc, MCD_LK_UNLOCK); mbx.cmd.opcode = MCD_CMDCONFIGDRIVE; mbx.cmd.length = sizeof(mbx.cmd.data.config) - 1; mbx.cmd.data.config.subcommand = MCD_CF_IRQENABLE; mbx.cmd.data.config.data1 = 0x01; mbx.res.length = 0; (void) mcd_send(sc, &mbx, 0); mcd_soft_reset(sc); sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_BIO, mcdintr, sc, sc->sc_dev.dv_xname); } /* * Wait interruptibly for an exclusive lock. * * XXX * Several drivers do this; it should be abstracted and made MP-safe. */ int mcdlock(sc) struct mcd_softc *sc; { int error; while ((sc->flags & MCDF_LOCKED) != 0) { sc->flags |= MCDF_WANTED; if ((error = tsleep(sc, PRIBIO | PCATCH, "mcdlck", 0)) != 0) return error; } sc->flags |= MCDF_LOCKED; return 0; } /* * Unlock and wake up any waiters. */ void mcdunlock(sc) struct mcd_softc *sc; { sc->flags &= ~MCDF_LOCKED; if ((sc->flags & MCDF_WANTED) != 0) { sc->flags &= ~MCDF_WANTED; wakeup(sc); } } int mcdopen(dev, flag, fmt, p) dev_t dev; int flag, fmt; struct proc *p; { int error; int unit, part; struct mcd_softc *sc; unit = MCDUNIT(dev); if (unit >= mcd_cd.cd_ndevs) return ENXIO; sc = mcd_cd.cd_devs[unit]; if (!sc) return ENXIO; if ((error = mcdlock(sc)) != 0) return error; if (sc->sc_dk.dk_openmask != 0) { /* * If any partition is open, but the disk has been invalidated, * disallow further opens. */ if ((sc->flags & MCDF_LOADED) == 0) { error = EIO; goto bad3; } } else { /* * Lock the drawer. This will also notice any pending disk * change or door open indicator and clear the MCDF_LOADED bit * if necessary. */ (void) mcd_setlock(sc, MCD_LK_LOCK); if ((sc->flags & MCDF_LOADED) == 0) { /* Partially reset the state. */ sc->lastmode = MCD_MD_UNKNOWN; sc->lastupc = MCD_UPC_UNKNOWN; sc->flags |= MCDF_LOADED; /* Set the mode, causing the disk to spin up. */ if ((error = mcd_setmode(sc, MCD_MD_COOKED)) != 0) goto bad2; /* Load the physical device parameters. */ if (mcd_get_parms(sc) != 0) { error = ENXIO; goto bad2; } /* Read the table of contents. */ if ((error = mcd_read_toc(sc)) != 0) goto bad2; /* Fabricate a disk label. */ mcdgetdisklabel(sc); } } MCD_TRACE("open: partition=%d disksize=%d blksize=%d\n", part, sc->disksize, sc->blksize, 0); part = MCDPART(dev); /* Check that the partition exists. */ if (part != RAW_PART && (part >= sc->sc_dk.dk_label->d_npartitions || sc->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { error = ENXIO; goto bad; } /* Insure only one open at a time. */ switch (fmt) { case S_IFCHR: sc->sc_dk.dk_copenmask |= (1 << part); break; case S_IFBLK: sc->sc_dk.dk_bopenmask |= (1 << part); break; } sc->sc_dk.dk_openmask = sc->sc_dk.dk_copenmask | sc->sc_dk.dk_bopenmask; mcdunlock(sc); return 0; bad2: sc->flags &= ~MCDF_LOADED; bad: if (sc->sc_dk.dk_openmask == 0) { #if 0 (void) mcd_setmode(sc, MCD_MD_SLEEP); #endif (void) mcd_setlock(sc, MCD_LK_UNLOCK); } bad3: mcdunlock(sc); return error; } int mcdclose(dev, flag, fmt, p) dev_t dev; int flag, fmt; struct proc *p; { struct mcd_softc *sc = mcd_cd.cd_devs[MCDUNIT(dev)]; int part = MCDPART(dev); int error; MCD_TRACE("close: partition=%d\n", part, 0, 0, 0); if ((error = mcdlock(sc)) != 0) return error; switch (fmt) { case S_IFCHR: sc->sc_dk.dk_copenmask &= ~(1 << part); break; case S_IFBLK: sc->sc_dk.dk_bopenmask &= ~(1 << part); break; } sc->sc_dk.dk_openmask = sc->sc_dk.dk_copenmask | sc->sc_dk.dk_bopenmask; if (sc->sc_dk.dk_openmask == 0) { /* XXXX Must wait for I/O to complete! */ #if 0 (void) mcd_setmode(sc, MCD_MD_SLEEP); #endif (void) mcd_setlock(sc, MCD_LK_UNLOCK); if (sc->flags & MCDF_EJECTING) { mcd_eject(sc); sc->flags &= ~MCDF_EJECTING; } } mcdunlock(sc); return 0; } void mcdstrategy(bp) struct buf *bp; { struct mcd_softc *sc = mcd_cd.cd_devs[MCDUNIT(bp->b_dev)]; int s; /* Test validity. */ MCD_TRACE("strategy: buf=0x%lx blkno=%ld bcount=%ld\n", bp, bp->b_blkno, bp->b_bcount, 0); if (bp->b_blkno < 0 || (bp->b_bcount % sc->blksize) != 0) { printf("%s: strategy: blkno = %d bcount = %ld\n", sc->sc_dev.dv_xname, bp->b_blkno, bp->b_bcount); bp->b_error = EINVAL; goto bad; } /* If device invalidated (e.g. media change, door open), error. */ if ((sc->flags & MCDF_LOADED) == 0) { MCD_TRACE("strategy: drive not valid\n", 0, 0, 0, 0); bp->b_error = EIO; goto bad; } /* No data to read. */ if (bp->b_bcount == 0) goto done; /* * Do bounds checking, adjust transfer. if error, process. * If end of partition, just return. */ if (MCDPART(bp->b_dev) != RAW_PART && bounds_check_with_label(bp, sc->sc_dk.dk_label, (sc->flags & (MCDF_WLABEL|MCDF_LABELLING)) != 0) <= 0) goto done; /* Queue it. */ s = splbio(); disksort(&sc->buf_queue, bp); splx(s); if (!sc->buf_queue.b_active) mcdstart(sc); return; bad: bp->b_flags |= B_ERROR; done: bp->b_resid = bp->b_bcount; biodone(bp); } void mcdstart(sc) struct mcd_softc *sc; { struct buf *bp, *dp = &sc->buf_queue; int s; loop: s = splbio(); bp = dp->b_actf; if (bp == NULL) { /* Nothing to do. */ dp->b_active = 0; splx(s); return; } /* Block found to process; dequeue. */ MCD_TRACE("start: found block bp=0x%x\n", bp, 0, 0, 0); dp->b_actf = bp->b_actf; splx(s); /* Changed media? */ if ((sc->flags & MCDF_LOADED) == 0) { MCD_TRACE("start: drive not valid\n", 0, 0, 0, 0); bp->b_error = EIO; bp->b_flags |= B_ERROR; biodone(bp); goto loop; } dp->b_active = 1; /* Instrumentation. */ s = splbio(); disk_busy(&sc->sc_dk); splx(s); sc->mbx.retry = MCD_RDRETRIES; sc->mbx.bp = bp; sc->mbx.blkno = bp->b_blkno / (sc->blksize / DEV_BSIZE); if (MCDPART(bp->b_dev) != RAW_PART) { struct partition *p; p = &sc->sc_dk.dk_label->d_partitions[MCDPART(bp->b_dev)]; sc->mbx.blkno += p->p_offset; } sc->mbx.nblk = bp->b_bcount / sc->blksize; sc->mbx.sz = sc->blksize; sc->mbx.skip = 0; sc->mbx.state = MCD_S_BEGIN; sc->mbx.mode = MCD_MD_COOKED; s = splbio(); (void) mcdintr(sc); splx(s); } int mcdread(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { return (physio(mcdstrategy, NULL, dev, B_READ, minphys, uio)); } int mcdwrite(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { return (physio(mcdstrategy, NULL, dev, B_WRITE, minphys, uio)); } int mcdioctl(dev, cmd, addr, flag, p) dev_t dev; u_long cmd; caddr_t addr; int flag; struct proc *p; { struct mcd_softc *sc = mcd_cd.cd_devs[MCDUNIT(dev)]; int error; MCD_TRACE("ioctl: cmd=0x%x\n", cmd, 0, 0, 0); if ((sc->flags & MCDF_LOADED) == 0) return EIO; switch (cmd) { case DIOCGDINFO: *(struct disklabel *)addr = *(sc->sc_dk.dk_label); return 0; case DIOCGPART: ((struct partinfo *)addr)->disklab = sc->sc_dk.dk_label; ((struct partinfo *)addr)->part = &sc->sc_dk.dk_label->d_partitions[MCDPART(dev)]; return 0; case DIOCWDINFO: case DIOCSDINFO: if ((flag & FWRITE) == 0) return EBADF; if ((error = mcdlock(sc)) != 0) return error; sc->flags |= MCDF_LABELLING; error = setdisklabel(sc->sc_dk.dk_label, (struct disklabel *)addr, /*sc->sc_dk.dk_openmask : */0, sc->sc_dk.dk_cpulabel); if (error == 0) { } sc->flags &= ~MCDF_LABELLING; mcdunlock(sc); return error; case DIOCWLABEL: return EBADF; case CDIOCPLAYTRACKS: return mcd_playtracks(sc, (struct ioc_play_track *)addr); case CDIOCPLAYMSF: return mcd_playmsf(sc, (struct ioc_play_msf *)addr); case CDIOCPLAYBLOCKS: return mcd_playblocks(sc, (struct ioc_play_blocks *)addr); case CDIOCREADSUBCHANNEL: return mcd_read_subchannel(sc, (struct ioc_read_subchannel *)addr); case CDIOREADTOCHEADER: return mcd_toc_header(sc, (struct ioc_toc_header *)addr); case CDIOREADTOCENTRYS: return mcd_toc_entries(sc, (struct ioc_read_toc_entry *)addr); case CDIOCSETPATCH: case CDIOCGETVOL: case CDIOCSETVOL: case CDIOCSETMONO: case CDIOCSETSTEREO: case CDIOCSETMUTE: case CDIOCSETLEFT: case CDIOCSETRIGHT: return EINVAL; case CDIOCRESUME: return mcd_resume(sc); case CDIOCPAUSE: return mcd_pause(sc); case CDIOCSTART: return EINVAL; case CDIOCSTOP: return mcd_stop(sc); case MTIOCTOP: if (((struct mtop *)addr)->mt_op != MTOFFL) return EIO; /* FALLTHROUGH */ case CDIOCEJECT: /* FALLTHROUGH */ case DIOCEJECT: sc->flags |= MCDF_EJECTING; return (0); case CDIOCALLOW: return mcd_setlock(sc, MCD_LK_UNLOCK); case CDIOCPREVENT: return mcd_setlock(sc, MCD_LK_LOCK); case DIOCLOCK: return mcd_setlock(sc, (*(int *)addr) ? MCD_LK_LOCK : MCD_LK_UNLOCK); case CDIOCSETDEBUG: sc->debug = 1; return 0; case CDIOCCLRDEBUG: sc->debug = 0; return 0; case CDIOCRESET: return mcd_hard_reset(sc); default: return ENOTTY; } #ifdef DIAGNOSTIC panic("mcdioctl: impossible"); #endif } /* * This could have been taken from scsi/cd.c, but it is not clear * whether the scsi cd driver is linked in. */ void mcdgetdisklabel(sc) struct mcd_softc *sc; { struct disklabel *lp = sc->sc_dk.dk_label; bzero(lp, sizeof(struct disklabel)); bzero(sc->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel)); lp->d_secsize = sc->blksize; lp->d_ntracks = 1; lp->d_nsectors = 100; lp->d_ncylinders = (sc->disksize / 100) + 1; lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; strncpy(lp->d_typename, "Mitsumi CD-ROM", 16); lp->d_type = 0; /* XXX */ strncpy(lp->d_packname, "fictitious", 16); lp->d_secperunit = sc->disksize; lp->d_rpm = 300; lp->d_interleave = 1; lp->d_flags = D_REMOVABLE; lp->d_partitions[0].p_offset = 0; lp->d_partitions[0].p_size = lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); lp->d_partitions[0].p_fstype = FS_ISO9660; lp->d_partitions[RAW_PART].p_offset = 0; lp->d_partitions[RAW_PART].p_size = lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); lp->d_partitions[RAW_PART].p_fstype = FS_ISO9660; lp->d_npartitions = RAW_PART + 1; lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); } int mcd_get_parms(sc) struct mcd_softc *sc; { struct mcd_mbox mbx; daddr_t size; int error; /* Send volume info command. */ mbx.cmd.opcode = MCD_CMDGETVOLINFO; mbx.cmd.length = 0; mbx.res.length = sizeof(mbx.res.data.volinfo); if ((error = mcd_send(sc, &mbx, 1)) != 0) return error; if (mbx.res.data.volinfo.trk_low == 0x00 && mbx.res.data.volinfo.trk_high == 0x00) return EINVAL; /* Volinfo is OK. */ sc->volinfo = mbx.res.data.volinfo; sc->blksize = MCD_BLKSIZE_COOKED; size = msf2hsg(sc->volinfo.vol_msf, 0); sc->disksize = size * (MCD_BLKSIZE_COOKED / DEV_BSIZE); return 0; } int mcdsize(dev) dev_t dev; { /* CD-ROMs are read-only. */ return -1; } int mcddump(dev, blkno, va, size) dev_t dev; daddr_t blkno; caddr_t va; size_t size; { /* Not implemented. */ return ENXIO; } int mcdprobe(parent, match, aux) struct device *parent; void *match, *aux; { struct mcd_softc *sc = match; struct isa_attach_args *ia = aux; int iobase = ia->ia_iobase; int i; struct mcd_mbox mbx; sc->iobase = iobase; if( !opti_cd_setup( OPTI_MITSUMI, iobase, ia->ia_irq, ia->ia_drq ) ) /* printf("mcdprobe: could not setup OPTi chipset.\n") */; /* Send a reset. */ outb(iobase + MCD_RESET, 0); delay(1000000); /* Get any pending status and throw away. */ for (i = 10; i; i--) inb(iobase + MCD_STATUS); delay(1000); /* Send get status command. */ mbx.cmd.opcode = MCD_CMDGETSTAT; mbx.cmd.length = 0; mbx.res.length = 0; if (mcd_send(sc, &mbx, 0) != 0) return 0; /* Get info about the drive. */ mbx.cmd.opcode = MCD_CMDCONTINFO; mbx.cmd.length = 0; mbx.res.length = sizeof(mbx.res.data.continfo); if (mcd_send(sc, &mbx, 0) != 0) return 0; /* * The following is code which is not guaranteed to work for all * drives, because the meaning of the expected 'M' is not clear * (M_itsumi is an obvious assumption, but I don't trust that). * Also, the original hack had a bogus condition that always * returned true. * * Note: Which models support interrupts? >=LU005S? */ sc->readcmd = MCD_CMDREADSINGLESPEED; switch (mbx.res.data.continfo.code) { case 'M': if (mbx.res.data.continfo.version <= 2) sc->type = "LU002S"; else if (mbx.res.data.continfo.version <= 5) sc->type = "LU005S"; else sc->type = "LU006S"; break; case 'F': sc->type = "FX001"; break; case 'D': sc->type = "FX001D"; sc->readcmd = MCD_CMDREADDOUBLESPEED; break; default: #ifdef MCDDEBUG printf("%s: unrecognized drive version %c%02x; will try to use it anyway\n", sc->sc_dev.dv_xname, mbx.res.data.continfo.code, mbx.res.data.continfo.version); #endif sc->type = 0; break; } sc->attached = 1; ia->ia_iosize = 4; ia->ia_msize = 0; return 1; } int mcd_getreply(sc) struct mcd_softc *sc; { int iobase = sc->iobase; int i; /* Wait until xfer port senses data ready. */ for (i = DELAY_GETREPLY; i; i--) { if ((inb(iobase + MCD_XFER) & MCD_XF_STATUSUNAVAIL) == 0) break; delay(DELAY_GRANULARITY); } if (!i) return -1; /* Get the data. */ return inb(iobase + MCD_STATUS); } int mcd_getstat(sc) struct mcd_softc *sc; { struct mcd_mbox mbx; mbx.cmd.opcode = MCD_CMDGETSTAT; mbx.cmd.length = 0; mbx.res.length = 0; return mcd_send(sc, &mbx, 1); } int mcd_getresult(sc, res) struct mcd_softc *sc; struct mcd_result *res; { int i, x; if (sc->debug) printf("%s: mcd_getresult: %d", sc->sc_dev.dv_xname, res->length); if ((x = mcd_getreply(sc)) < 0) { if (sc->debug) printf(" timeout\n"); else if (sc->attached) printf("%s: timeout in getresult\n", sc->sc_dev.dv_xname); return EIO; } if (sc->debug) printf(" %02x", (u_int)x); sc->status = x; mcd_setflags(sc); if ((sc->status & MCD_ST_CMDCHECK) != 0) return EINVAL; for (i = 0; i < res->length; i++) { if ((x = mcd_getreply(sc)) < 0) { if (sc->debug) printf(" timeout\n"); else printf("%s: timeout in getresult\n", sc->sc_dev.dv_xname); return EIO; } if (sc->debug) printf(" %02x", (u_int)x); res->data.raw.data[i] = x; } if (sc->debug) printf(" succeeded\n"); #ifdef MCDDEBUG delay(10); while ((inb(sc->iobase + MCD_XFER) & MCD_XF_STATUSUNAVAIL) == 0) { x = inb(sc->iobase + MCD_STATUS); printf("%s: got extra byte %02x during getstatus\n", sc->sc_dev.dv_xname, (u_int)x); delay(10); } #endif return 0; } void mcd_setflags(sc) struct mcd_softc *sc; { /* Check flags. */ if ((sc->flags & MCDF_LOADED) != 0 && (sc->status & (MCD_ST_DSKCHNG | MCD_ST_DSKIN | MCD_ST_DOOROPEN)) != MCD_ST_DSKIN) { if ((sc->status & MCD_ST_DOOROPEN) != 0) printf("%s: door open\n", sc->sc_dev.dv_xname); else if ((sc->status & MCD_ST_DSKIN) == 0) printf("%s: no disk present\n", sc->sc_dev.dv_xname); else if ((sc->status & MCD_ST_DSKCHNG) != 0) printf("%s: media change\n", sc->sc_dev.dv_xname); sc->flags &= ~MCDF_LOADED; } if ((sc->status & MCD_ST_AUDIOBSY) != 0) sc->audio_status = CD_AS_PLAY_IN_PROGRESS; else if (sc->audio_status == CD_AS_PLAY_IN_PROGRESS || sc->audio_status == CD_AS_AUDIO_INVALID) sc->audio_status = CD_AS_PLAY_COMPLETED; } int mcd_send(sc, mbx, diskin) struct mcd_softc *sc; struct mcd_mbox *mbx; int diskin; { int iobase = sc->iobase; int retry, i, error; if (sc->debug) { printf("%s: mcd_send: %d %02x", sc->sc_dev.dv_xname, mbx->cmd.length, (u_int)mbx->cmd.opcode); for (i = 0; i < mbx->cmd.length; i++) printf(" %02x", (u_int)mbx->cmd.data.raw.data[i]); printf("\n"); } for (retry = MCD_RETRIES; retry; retry--) { outb(iobase + MCD_COMMAND, mbx->cmd.opcode); for (i = 0; i < mbx->cmd.length; i++) outb(iobase + MCD_COMMAND, mbx->cmd.data.raw.data[i]); if ((error = mcd_getresult(sc, &mbx->res)) == 0) break; if (error == EINVAL) return error; } if (!retry) return error; if (diskin && (sc->flags & MCDF_LOADED) == 0) return EIO; return 0; } static int bcd2bin(b) bcd_t b; { return (b >> 4) * 10 + (b & 15); } static bcd_t bin2bcd(b) int b; { return ((b / 10) << 4) | (b % 10); } static void hsg2msf(hsg, msf) 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 daddr_t msf2hsg(msf, relative) bcd_t *msf; int relative; { daddr_t blkno; blkno = bcd2bin(M_msf(msf)) * 75 * 60 + bcd2bin(S_msf(msf)) * 75 + bcd2bin(F_msf(msf)); if (!relative) blkno -= 150; return blkno; } void mcd_pseudointr(v) void *v; { struct mcd_softc *sc = v; int s; s = splbio(); (void) mcdintr(sc); splx(s); } /* * State machine to process read requests. * Initialize with MCD_S_BEGIN: calculate sizes, and set mode * MCD_S_WAITMODE: waits for status reply from set mode, set read command * MCD_S_WAITREAD: wait for read ready, read data. */ int mcdintr(arg) void *arg; { struct mcd_softc *sc = arg; struct mcd_mbx *mbx = &sc->mbx; int iobase = sc->iobase; struct buf *bp = mbx->bp; int i; u_char x; bcd_t msf[3]; switch (mbx->state) { case MCD_S_IDLE: return 0; case MCD_S_BEGIN: tryagain: if (mbx->mode == sc->lastmode) goto firstblock; sc->lastmode = MCD_MD_UNKNOWN; outb(iobase + MCD_COMMAND, MCD_CMDSETMODE); outb(iobase + MCD_COMMAND, mbx->mode); mbx->count = RDELAY_WAITMODE; mbx->state = MCD_S_WAITMODE; case MCD_S_WAITMODE: untimeout(mcd_pseudointr, sc); for (i = 20; i; i--) { x = inb(iobase + MCD_XFER); if ((x & MCD_XF_STATUSUNAVAIL) == 0) break; delay(50); } if (i == 0) goto hold; sc->status = inb(iobase + MCD_STATUS); mcd_setflags(sc); if ((sc->flags & MCDF_LOADED) == 0) goto changed; MCD_TRACE("doread: got WAITMODE delay=%d\n", RDELAY_WAITMODE - mbx->count, 0, 0, 0); sc->lastmode = mbx->mode; firstblock: MCD_TRACE("doread: read blkno=%d for bp=0x%x\n", mbx->blkno, bp, 0, 0); /* Build parameter block. */ hsg2msf(mbx->blkno, msf); /* Send the read command. */ outb(iobase + MCD_COMMAND, sc->readcmd); outb(iobase + MCD_COMMAND, msf[0]); outb(iobase + MCD_COMMAND, msf[1]); outb(iobase + MCD_COMMAND, msf[2]); outb(iobase + MCD_COMMAND, 0); outb(iobase + MCD_COMMAND, 0); outb(iobase + MCD_COMMAND, mbx->nblk); mbx->count = RDELAY_WAITREAD; mbx->state = MCD_S_WAITREAD; case MCD_S_WAITREAD: untimeout(mcd_pseudointr, sc); nextblock: loop: for (i = 20; i; i--) { x = inb(iobase + MCD_XFER); if ((x & MCD_XF_DATAUNAVAIL) == 0) goto gotblock; if ((x & MCD_XF_STATUSUNAVAIL) == 0) break; delay(50); } if (i == 0) goto hold; sc->status = inb(iobase + MCD_STATUS); mcd_setflags(sc); if ((sc->flags & MCDF_LOADED) == 0) goto changed; #if 0 printf("%s: got status byte %02x during read\n", sc->sc_dev.dv_xname, (u_int)sc->status); #endif goto loop; gotblock: MCD_TRACE("doread: got data delay=%d\n", RDELAY_WAITREAD - mbx->count, 0, 0, 0); /* Data is ready. */ outb(iobase + MCD_CTL2, 0x04); /* XXX */ insb(iobase + MCD_RDATA, bp->b_data + mbx->skip, mbx->sz); outb(iobase + MCD_CTL2, 0x0c); /* XXX */ mbx->blkno += 1; mbx->skip += mbx->sz; if (--mbx->nblk > 0) goto nextblock; mbx->state = MCD_S_IDLE; /* Return buffer. */ bp->b_resid = 0; disk_unbusy(&sc->sc_dk, bp->b_bcount); biodone(bp); mcdstart(sc); return 1; hold: if (mbx->count-- < 0) { printf("%s: timeout in state %d", sc->sc_dev.dv_xname, mbx->state); goto readerr; } #if 0 printf("%s: sleep in state %d\n", sc->sc_dev.dv_xname, mbx->state); #endif timeout(mcd_pseudointr, sc, hz / 100); return -1; } readerr: if (mbx->retry-- > 0) { printf("; retrying\n"); goto tryagain; } else printf("; giving up\n"); changed: /* Invalidate the buffer. */ bp->b_flags |= B_ERROR; bp->b_resid = bp->b_bcount - mbx->skip; disk_unbusy(&sc->sc_dk, (bp->b_bcount - bp->b_resid)); biodone(bp); mcdstart(sc); return -1; #ifdef notyet printf("%s: unit timeout; resetting\n", sc->sc_dev.dv_xname); outb(mbx->iobase + MCD_RESET, MCD_CMDRESET); delay(300000); (void) mcd_getstat(sc, 1); (void) mcd_getstat(sc, 1); /*sc->status &= ~MCD_ST_DSKCHNG; */ sc->debug = 1; /* preventive set debug mode */ #endif } void mcd_soft_reset(sc) struct mcd_softc *sc; { sc->debug = 0; sc->flags = 0; sc->lastmode = MCD_MD_UNKNOWN; sc->lastupc = MCD_UPC_UNKNOWN; sc->audio_status = CD_AS_AUDIO_INVALID; outb(sc->iobase + MCD_CTL2, 0x0c); /* XXX */ } int mcd_hard_reset(sc) struct mcd_softc *sc; { struct mcd_mbox mbx; mcd_soft_reset(sc); mbx.cmd.opcode = MCD_CMDRESET; mbx.cmd.length = 0; mbx.res.length = 0; return mcd_send(sc, &mbx, 0); } int mcd_setmode(sc, mode) struct mcd_softc *sc; int mode; { struct mcd_mbox mbx; int error; if (sc->lastmode == mode) return 0; if (sc->debug) printf("%s: setting mode to %d\n", sc->sc_dev.dv_xname, mode); sc->lastmode = MCD_MD_UNKNOWN; mbx.cmd.opcode = MCD_CMDSETMODE; mbx.cmd.length = sizeof(mbx.cmd.data.datamode); mbx.cmd.data.datamode.mode = mode; mbx.res.length = 0; if ((error = mcd_send(sc, &mbx, 1)) != 0) return error; sc->lastmode = mode; return 0; } int mcd_setupc(sc, upc) struct mcd_softc *sc; int upc; { struct mcd_mbox mbx; int error; if (sc->lastupc == upc) return 0; if (sc->debug) printf("%s: setting upc to %d\n", sc->sc_dev.dv_xname, upc); sc->lastupc = MCD_UPC_UNKNOWN; mbx.cmd.opcode = MCD_CMDCONFIGDRIVE; mbx.cmd.length = sizeof(mbx.cmd.data.config) - 1; mbx.cmd.data.config.subcommand = MCD_CF_READUPC; mbx.cmd.data.config.data1 = upc; mbx.res.length = 0; if ((error = mcd_send(sc, &mbx, 1)) != 0) return error; sc->lastupc = upc; return 0; } int mcd_toc_header(sc, th) struct mcd_softc *sc; struct ioc_toc_header *th; { if (sc->debug) printf("%s: mcd_toc_header: reading toc header\n", sc->sc_dev.dv_xname); th->len = msf2hsg(sc->volinfo.vol_msf, 0); th->starting_track = bcd2bin(sc->volinfo.trk_low); th->ending_track = bcd2bin(sc->volinfo.trk_high); return 0; } int mcd_read_toc(sc) struct mcd_softc *sc; { struct ioc_toc_header th; union mcd_qchninfo q; int error, trk, idx, retry; if ((error = mcd_toc_header(sc, &th)) != 0) return error; if ((error = mcd_stop(sc)) != 0) return error; if (sc->debug) printf("%s: read_toc: reading qchannel info\n", sc->sc_dev.dv_xname); for (trk = th.starting_track; trk <= th.ending_track; trk++) sc->toc[trk].toc.idx_no = 0x00; trk = th.ending_track - th.starting_track + 1; for (retry = 300; retry && trk > 0; retry--) { if (mcd_getqchan(sc, &q, CD_TRACK_INFO) != 0) break; if (q.toc.trk_no != 0x00 || q.toc.idx_no == 0x00) continue; idx = bcd2bin(q.toc.idx_no); if (idx < MCD_MAXTOCS && sc->toc[idx].toc.idx_no == 0x00) { sc->toc[idx] = q; trk--; } } /* Inform the drive that we're finished so it turns off the light. */ if ((error = mcd_setmode(sc, MCD_MD_COOKED)) != 0) return error; if (trk != 0) return EINVAL; /* Add a fake last+1 for mcd_playtracks(). */ idx = th.ending_track + 1; sc->toc[idx].toc.control = sc->toc[idx-1].toc.control; sc->toc[idx].toc.addr_type = sc->toc[idx-1].toc.addr_type; sc->toc[idx].toc.trk_no = 0x00; sc->toc[idx].toc.idx_no = 0xaa; sc->toc[idx].toc.absolute_pos[0] = sc->volinfo.vol_msf[0]; sc->toc[idx].toc.absolute_pos[1] = sc->volinfo.vol_msf[1]; sc->toc[idx].toc.absolute_pos[2] = sc->volinfo.vol_msf[2]; return 0; } int mcd_toc_entries(sc, te) struct mcd_softc *sc; struct ioc_read_toc_entry *te; { int len = te->data_len; struct ret_toc { struct ioc_toc_header header; struct cd_toc_entry entries[MCD_MAXTOCS]; } data; u_char trk; daddr_t lba; int error, n; if (len > sizeof(data.entries) || len < sizeof(struct cd_toc_entry)) return EINVAL; if (te->address_format != CD_MSF_FORMAT && te->address_format != CD_LBA_FORMAT) return EINVAL; /* Copy the TOC header. */ if ((error = mcd_toc_header(sc, &data.header)) != 0) return error; /* Verify starting track. */ trk = te->starting_track; if (trk == 0x00) trk = data.header.starting_track; else if (trk == 0xaa) trk = data.header.ending_track + 1; else if (trk < data.header.starting_track || trk > data.header.ending_track + 1) return EINVAL; /* Copy the TOC data. */ for (n = 0; trk <= data.header.ending_track + 1; trk++) { if (sc->toc[trk].toc.idx_no == 0x00) continue; data.entries[n].control = sc->toc[trk].toc.control; data.entries[n].addr_type = sc->toc[trk].toc.addr_type; data.entries[n].track = bcd2bin(sc->toc[trk].toc.idx_no); switch (te->address_format) { case CD_MSF_FORMAT: data.entries[n].addr.addr[0] = 0; data.entries[n].addr.addr[1] = bcd2bin(sc->toc[trk].toc.absolute_pos[0]); data.entries[n].addr.addr[2] = bcd2bin(sc->toc[trk].toc.absolute_pos[1]); data.entries[n].addr.addr[3] = bcd2bin(sc->toc[trk].toc.absolute_pos[2]); break; case CD_LBA_FORMAT: lba = msf2hsg(sc->toc[trk].toc.absolute_pos, 0); data.entries[n].addr.addr[0] = lba >> 24; data.entries[n].addr.addr[1] = lba >> 16; data.entries[n].addr.addr[2] = lba >> 8; data.entries[n].addr.addr[3] = lba; break; } n++; } len = min(len, n * sizeof(struct cd_toc_entry)); /* Copy the data back. */ return copyout(&data.entries[0], te->data, len); } int mcd_stop(sc) struct mcd_softc *sc; { struct mcd_mbox mbx; int error; if (sc->debug) printf("%s: mcd_stop: stopping play\n", sc->sc_dev.dv_xname); mbx.cmd.opcode = MCD_CMDSTOPAUDIO; mbx.cmd.length = 0; mbx.res.length = 0; if ((error = mcd_send(sc, &mbx, 1)) != 0) return error; sc->audio_status = CD_AS_PLAY_COMPLETED; return 0; } int mcd_getqchan(sc, q, qchn) struct mcd_softc *sc; union mcd_qchninfo *q; int qchn; { struct mcd_mbox mbx; int error; if (qchn == CD_TRACK_INFO) { if ((error = mcd_setmode(sc, MCD_MD_TOC)) != 0) return error; } else { if ((error = mcd_setmode(sc, MCD_MD_COOKED)) != 0) return error; } if (qchn == CD_MEDIA_CATALOG) { if ((error = mcd_setupc(sc, MCD_UPC_ENABLE)) != 0) return error; } else { if ((error = mcd_setupc(sc, MCD_UPC_DISABLE)) != 0) return error; } mbx.cmd.opcode = MCD_CMDGETQCHN; mbx.cmd.length = 0; mbx.res.length = sizeof(mbx.res.data.qchninfo); if ((error = mcd_send(sc, &mbx, 1)) != 0) return error; *q = mbx.res.data.qchninfo; return 0; } int mcd_read_subchannel(sc, ch) struct mcd_softc *sc; struct ioc_read_subchannel *ch; { int len = ch->data_len; union mcd_qchninfo q; struct cd_sub_channel_info data; daddr_t lba; int error; if (sc->debug) printf("%s: subchan: af=%d df=%d\n", sc->sc_dev.dv_xname, ch->address_format, ch->data_format); if (len > sizeof(data) || len < sizeof(struct cd_sub_channel_header)) return EINVAL; if (ch->address_format != CD_MSF_FORMAT && ch->address_format != CD_LBA_FORMAT) return EINVAL; if (ch->data_format != CD_CURRENT_POSITION && ch->data_format != CD_MEDIA_CATALOG) return EINVAL; if ((error = mcd_getqchan(sc, &q, ch->data_format)) != 0) return error; data.header.audio_status = sc->audio_status; data.what.media_catalog.data_format = ch->data_format; switch (ch->data_format) { case CD_MEDIA_CATALOG: data.what.media_catalog.mc_valid = 1; #if 0 data.what.media_catalog.mc_number = #endif break; case CD_CURRENT_POSITION: data.what.position.track_number = bcd2bin(q.current.trk_no); data.what.position.index_number = bcd2bin(q.current.idx_no); switch (ch->address_format) { case CD_MSF_FORMAT: data.what.position.reladdr.addr[0] = 0; data.what.position.reladdr.addr[1] = bcd2bin(q.current.relative_pos[0]); data.what.position.reladdr.addr[2] = bcd2bin(q.current.relative_pos[1]); data.what.position.reladdr.addr[3] = bcd2bin(q.current.relative_pos[2]); data.what.position.absaddr.addr[0] = 0; data.what.position.absaddr.addr[1] = bcd2bin(q.current.absolute_pos[0]); data.what.position.absaddr.addr[2] = bcd2bin(q.current.absolute_pos[1]); data.what.position.absaddr.addr[3] = bcd2bin(q.current.absolute_pos[2]); break; case CD_LBA_FORMAT: lba = msf2hsg(q.current.relative_pos, 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 == 0x00) lba = -lba; data.what.position.reladdr.addr[0] = lba >> 24; data.what.position.reladdr.addr[1] = lba >> 16; data.what.position.reladdr.addr[2] = lba >> 8; data.what.position.reladdr.addr[3] = lba; lba = msf2hsg(q.current.absolute_pos, 0); data.what.position.absaddr.addr[0] = lba >> 24; data.what.position.absaddr.addr[1] = lba >> 16; data.what.position.absaddr.addr[2] = lba >> 8; data.what.position.absaddr.addr[3] = lba; break; } break; } return copyout(&data, ch->data, len); } int mcd_playtracks(sc, p) struct mcd_softc *sc; struct ioc_play_track *p; { struct mcd_mbox mbx; int a = p->start_track; int z = p->end_track; int error; if (sc->debug) printf("%s: playtracks: from %d:%d to %d:%d\n", sc->sc_dev.dv_xname, a, p->start_index, z, p->end_index); if (a < bcd2bin(sc->volinfo.trk_low) || a > bcd2bin(sc->volinfo.trk_high) || a > z || z < bcd2bin(sc->volinfo.trk_low) || z > bcd2bin(sc->volinfo.trk_high)) return EINVAL; if ((error = mcd_setmode(sc, MCD_MD_COOKED)) != 0) return error; mbx.cmd.opcode = MCD_CMDREADSINGLESPEED; mbx.cmd.length = sizeof(mbx.cmd.data.play); mbx.cmd.data.play.start_msf[0] = sc->toc[a].toc.absolute_pos[0]; mbx.cmd.data.play.start_msf[1] = sc->toc[a].toc.absolute_pos[1]; mbx.cmd.data.play.start_msf[2] = sc->toc[a].toc.absolute_pos[2]; mbx.cmd.data.play.end_msf[0] = sc->toc[z+1].toc.absolute_pos[0]; mbx.cmd.data.play.end_msf[1] = sc->toc[z+1].toc.absolute_pos[1]; mbx.cmd.data.play.end_msf[2] = sc->toc[z+1].toc.absolute_pos[2]; sc->lastpb = mbx.cmd; mbx.res.length = 0; return mcd_send(sc, &mbx, 1); } int mcd_playmsf(sc, p) struct mcd_softc *sc; struct ioc_play_msf *p; { struct mcd_mbox mbx; int error; if (sc->debug) printf("%s: playmsf: from %d:%d.%d to %d:%d.%d\n", sc->sc_dev.dv_xname, 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)) return EINVAL; if ((error = mcd_setmode(sc, MCD_MD_COOKED)) != 0) return error; mbx.cmd.opcode = MCD_CMDREADSINGLESPEED; mbx.cmd.length = sizeof(mbx.cmd.data.play); mbx.cmd.data.play.start_msf[0] = bin2bcd(p->start_m); mbx.cmd.data.play.start_msf[1] = bin2bcd(p->start_s); mbx.cmd.data.play.start_msf[2] = bin2bcd(p->start_f); mbx.cmd.data.play.end_msf[0] = bin2bcd(p->end_m); mbx.cmd.data.play.end_msf[1] = bin2bcd(p->end_s); mbx.cmd.data.play.end_msf[2] = bin2bcd(p->end_f); sc->lastpb = mbx.cmd; mbx.res.length = 0; return mcd_send(sc, &mbx, 1); } int mcd_playblocks(sc, p) struct mcd_softc *sc; struct ioc_play_blocks *p; { struct mcd_mbox mbx; int error; if (sc->debug) printf("%s: playblocks: blkno %d length %d\n", sc->sc_dev.dv_xname, p->blk, p->len); if (p->blk > sc->disksize || p->len > sc->disksize || (p->blk + p->len) > sc->disksize) return 0; if ((error = mcd_setmode(sc, MCD_MD_COOKED)) != 0) return error; mbx.cmd.opcode = MCD_CMDREADSINGLESPEED; mbx.cmd.length = sizeof(mbx.cmd.data.play); hsg2msf(p->blk, mbx.cmd.data.play.start_msf); hsg2msf(p->blk + p->len, mbx.cmd.data.play.end_msf); sc->lastpb = mbx.cmd; mbx.res.length = 0; return mcd_send(sc, &mbx, 1); } int mcd_pause(sc) struct mcd_softc *sc; { union mcd_qchninfo q; int error; /* Verify current status. */ if (sc->audio_status != CD_AS_PLAY_IN_PROGRESS) { printf("%s: pause: attempted when not playing\n", sc->sc_dev.dv_xname); return EINVAL; } /* Get the current position. */ if ((error = mcd_getqchan(sc, &q, CD_CURRENT_POSITION)) != 0) return error; /* Copy it into lastpb. */ sc->lastpb.data.seek.start_msf[0] = q.current.absolute_pos[0]; sc->lastpb.data.seek.start_msf[1] = q.current.absolute_pos[1]; sc->lastpb.data.seek.start_msf[2] = q.current.absolute_pos[2]; /* Stop playing. */ if ((error = mcd_stop(sc)) != 0) return error; /* Set the proper status and exit. */ sc->audio_status = CD_AS_PLAY_PAUSED; return 0; } int mcd_resume(sc) struct mcd_softc *sc; { struct mcd_mbox mbx; int error; if (sc->audio_status != CD_AS_PLAY_PAUSED) return EINVAL; if ((error = mcd_setmode(sc, MCD_MD_COOKED)) != 0) return error; mbx.cmd = sc->lastpb; mbx.res.length = 0; return mcd_send(sc, &mbx, 1); } int mcd_eject(sc) struct mcd_softc *sc; { struct mcd_mbox mbx; mbx.cmd.opcode = MCD_CMDEJECTDISK; mbx.cmd.length = 0; mbx.res.length = 0; return mcd_send(sc, &mbx, 0); } int mcd_setlock(sc, mode) struct mcd_softc *sc; int mode; { struct mcd_mbox mbx; mbx.cmd.opcode = MCD_CMDSETLOCK; mbx.cmd.length = sizeof(mbx.cmd.data.lockmode); mbx.cmd.data.lockmode.mode = mode; mbx.res.length = 0; return mcd_send(sc, &mbx, 1); }