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NetBSD/sys/dev/isa/mcd.c

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/* $NetBSD: mcd.c,v 1.42 1995/08/05 23:47:52 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 <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/buf.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <sys/ioctl.h>
#include <sys/cdio.h>
#include <sys/errno.h>
#include <sys/disklabel.h>
#include <sys/device.h>
#include <sys/disk.h>
#include <machine/cpu.h>
#include <machine/pio.h>
#include <dev/isa/isavar.h>
#include <dev/isa/mcdreg.h>
#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 dkdevice sc_dk;
void *sc_ih;
int iobase;
int irq, drq;
char *type;
u_char readcmd;
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 */
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 */
int mcdopen __P((dev_t, int, int, struct proc *));
int mcdclose __P((dev_t, int, int));
int mcdioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
int mcdsize __P((dev_t));
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 cfdriver mcdcd = {
NULL, "mcd", mcdprobe, mcdattach, DV_DISK, sizeof(struct mcd_softc)
};
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 *));
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;
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_dk.dk_driver = &mcddkdriver;
sc->sc_ih = isa_intr_establish(ia->ia_irq, ISA_IST_EDGE, ISA_IPL_BIO,
mcdintr, sc);
}
/*
* 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 >= mcdcd.cd_ndevs)
return ENXIO;
sc = mcdcd.cd_devs[unit];
if (!sc)
return ENXIO;
if (error = mcdlock(sc))
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)
dev_t dev;
int flag, fmt;
{
struct mcd_softc *sc = mcdcd.cd_devs[MCDUNIT(dev)];
int part = MCDPART(dev);
int error;
MCD_TRACE("close: partition=%d\n", part, 0, 0, 0);
if (error = mcdlock(sc))
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);
}
mcdunlock(sc);
return 0;
}
void
mcdstrategy(bp)
struct buf *bp;
{
struct mcd_softc *sc = mcdcd.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 = %d\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;
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)
dev_t dev;
struct uio *uio;
{
return (physio(mcdstrategy, NULL, dev, B_READ, minphys, uio));
}
int
mcdwrite(dev, uio)
dev_t dev;
struct uio *uio;
{
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 = mcdcd.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))
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 CDIOCEJECT:
return mcd_eject(sc);
case CDIOCALLOW:
return mcd_setlock(sc, MCD_LK_UNLOCK);
case CDIOCPREVENT:
return mcd_setlock(sc, MCD_LK_LOCK);
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;
/* 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:
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);
sc->type = 0;
break;
}
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
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(sc)
struct mcd_softc *sc;
{
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;
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:
harderr:
/* Invalidate the buffer. */
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount - mbx->skip;
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[0] = 0;
data.entries[n].addr[1] = bcd2bin(sc->toc[trk].toc.absolute_pos[0]);
data.entries[n].addr[2] = bcd2bin(sc->toc[trk].toc.absolute_pos[1]);
data.entries[n].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[0] = lba >> 24;
data.entries[n].addr[1] = lba >> 16;
data.entries[n].addr[2] = lba >> 8;
data.entries[n].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[0] = 0;
data.what.position.reladdr[1] = bcd2bin(q.current.relative_pos[0]);
data.what.position.reladdr[2] = bcd2bin(q.current.relative_pos[1]);
data.what.position.reladdr[3] = bcd2bin(q.current.relative_pos[2]);
data.what.position.absaddr[0] = 0;
data.what.position.absaddr[1] = bcd2bin(q.current.absolute_pos[0]);
data.what.position.absaddr[2] = bcd2bin(q.current.absolute_pos[1]);
data.what.position.absaddr[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[0] = lba >> 24;
data.what.position.reladdr[1] = lba >> 16;
data.what.position.reladdr[2] = lba >> 8;
data.what.position.reladdr[3] = lba;
lba = msf2hsg(q.current.absolute_pos, 0);
data.what.position.absaddr[0] = lba >> 24;
data.what.position.absaddr[1] = lba >> 16;
data.what.position.absaddr[2] = lba >> 8;
data.what.position.absaddr[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);
}
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