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freebsd-dev/sys/dev/scd/scd.c
John Baldwin 42e8c47b78 Add locking to scd(4) and mark MPSAFE. 
- Actually use existing per-softc mutex.
- Use mutex in cdev routines and remove D_NEEDGIANT.
- Use callout(9) instead of timeout(9).
- Don't check for impossible conditions (e.g. SCDINIT being clear).
- Use bus_*() instead of bus_space_*().

Tested by:	no one
2014-11-18 22:02:37 +00:00

1432 lines
34 KiB
C
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/*-
* Copyright (c) 1995 Mikael Hybsch
* All rights reserved.
*
* Portions of this file are copied from mcd.c
* which has the following copyrights:
*
* 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 by Andrew A. Chernov
*
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#undef SCD_DEBUG
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/bio.h>
#include <sys/cdio.h>
#include <sys/disk.h>
#include <sys/bus.h>
#include <machine/stdarg.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <dev/scd/scdreg.h>
#include <dev/scd/scdvar.h>
/* flags */
#define SCDOPEN 0x0001 /* device opened */
#define SCDVALID 0x0002 /* parameters loaded */
#define SCDINIT 0x0004 /* device is init'd */
#define SCDPROBING 0x0020 /* probing */
#define SCDTOC 0x0100 /* already read toc */
#define SCDMBXBSY 0x0200 /* local mbx is busy */
#define SCDSPINNING 0x0400 /* drive is spun up */
#define SCD_S_BEGIN 0
#define SCD_S_BEGIN1 1
#define SCD_S_WAITSTAT 2
#define SCD_S_WAITFIFO 3
#define SCD_S_WAITSPIN 4
#define SCD_S_WAITREAD 5
#define SCD_S_WAITPARAM 6
#define RDELAY_WAIT 300
#define RDELAY_WAITREAD 300
#define SCDBLKSIZE 2048
#ifdef SCD_DEBUG
static int scd_debuglevel = SCD_DEBUG;
# define XDEBUG(sc, level, fmt, args...) \
do { \
if (scd_debuglevel >= level) \
device_printf(sc->dev, fmt, ## args); \
} while (0)
#else
# define XDEBUG(sc, level, fmt, args...)
#endif
#define IS_ATTENTION(sc) ((SCD_READ(sc, IREG_STATUS) & SBIT_ATTENTION) != 0)
#define IS_BUSY(sc) ((SCD_READ(sc, IREG_STATUS) & SBIT_BUSY) != 0)
#define IS_DATA_RDY(sc) ((SCD_READ(sc, IREG_STATUS) & SBIT_DATA_READY) != 0)
#define STATUS_BIT(sc, bit) ((SCD_READ(sc, IREG_STATUS) & (bit)) != 0)
#define FSTATUS_BIT(sc, bit) ((SCD_READ(sc, IREG_FSTATUS) & (bit)) != 0)
/* prototypes */
static void hsg2msf(int hsg, bcd_t *msf);
static int msf2hsg(bcd_t *msf);
static void process_attention(struct scd_softc *);
static int waitfor_status_bits(struct scd_softc *, int bits_set, int bits_clear);
static int send_cmd(struct scd_softc *, u_char cmd, u_int nargs, ...);
static void init_drive(struct scd_softc *);
static int spin_up(struct scd_softc *);
static int read_toc(struct scd_softc *);
static int get_result(struct scd_softc *, int result_len, u_char *result);
static void print_error(struct scd_softc *, int errcode);
static void scd_start(struct scd_softc *);
static void scd_timeout(void *);
static void scd_doread(struct scd_softc *, int state, struct scd_mbx *mbxin);
static int scd_eject(struct scd_softc *);
static int scd_stop(struct scd_softc *);
static int scd_pause(struct scd_softc *);
static int scd_resume(struct scd_softc *);
static int scd_playtracks(struct scd_softc *, struct ioc_play_track *pt);
static int scd_playmsf(struct scd_softc *, struct ioc_play_msf *msf);
static int scd_play(struct scd_softc *, struct ioc_play_msf *msf);
static int scd_subchan(struct scd_softc *, struct ioc_read_subchannel *sch, int nocopyout);
static int read_subcode(struct scd_softc *, struct sony_subchannel_position_data *sch);
/* for xcdplayer */
static int scd_toc_header(struct scd_softc *, struct ioc_toc_header *th);
static int scd_toc_entrys(struct scd_softc *, struct ioc_read_toc_entry *te);
static int scd_toc_entry(struct scd_softc *, struct ioc_read_toc_single_entry *te);
#define SCD_LASTPLUS1 170 /* don't ask, xcdplayer passes this in */
static d_open_t scdopen;
static d_close_t scdclose;
static d_ioctl_t scdioctl;
static d_strategy_t scdstrategy;
static struct cdevsw scd_cdevsw = {
.d_version = D_VERSION,
.d_open = scdopen,
.d_close = scdclose,
.d_read = physread,
.d_ioctl = scdioctl,
.d_strategy = scdstrategy,
.d_name = "scd",
.d_flags = D_DISK,
};
int
scd_attach(struct scd_softc *sc)
{
int unit;
unit = device_get_unit(sc->dev);
SCD_LOCK(sc);
init_drive(sc);
sc->data.flags = SCDINIT;
sc->data.audio_status = CD_AS_AUDIO_INVALID;
bioq_init(&sc->data.head);
SCD_UNLOCK(sc);
sc->scd_dev_t = make_dev(&scd_cdevsw, 8 * unit,
UID_ROOT, GID_OPERATOR, 0640, "scd%d", unit);
sc->scd_dev_t->si_drv1 = (void *)sc;
return (0);
}
static int
scdopen(struct cdev *dev, int flags, int fmt, struct thread *td)
{
struct scd_softc *sc;
int rc;
sc = (struct scd_softc *)dev->si_drv1;
/* mark all open part's invalid */
SCD_LOCK(sc);
if (sc->data.openflag) {
SCD_UNLOCK(sc);
return (ENXIO);
}
XDEBUG(sc, 1, "DEBUG: status = 0x%x\n", SCD_READ(sc, IREG_STATUS));
if ((rc = spin_up(sc)) != 0) {
print_error(sc, rc);
SCD_UNLOCK(sc);
return (EIO);
}
if (!(sc->data.flags & SCDTOC)) {
int loop_count = 3;
while (loop_count-- > 0 && (rc = read_toc(sc)) != 0) {
if (rc == ERR_NOT_SPINNING) {
rc = spin_up(sc);
if (rc) {
print_error(sc, rc);
SCD_UNLOCK(sc);
return (EIO);
}
continue;
}
device_printf(sc->dev, "TOC read error 0x%x\n", rc);
SCD_UNLOCK(sc);
return (EIO);
}
}
sc->data.openflag = 1;
sc->data.flags |= SCDVALID;
SCD_UNLOCK(sc);
return (0);
}
static int
scdclose(struct cdev *dev, int flags, int fmt, struct thread *td)
{
struct scd_softc *sc;
sc = (struct scd_softc *)dev->si_drv1;
SCD_LOCK(sc);
KASSERT(sc->data.openflag, ("device not open"));
if (sc->data.audio_status != CD_AS_PLAY_IN_PROGRESS) {
(void)send_cmd(sc, CMD_SPIN_DOWN, 0);
sc->data.flags &= ~SCDSPINNING;
}
/* close channel */
sc->data.openflag = 0;
SCD_UNLOCK(sc);
return (0);
}
static void
scdstrategy(struct bio *bp)
{
struct scd_softc *sc;
sc = (struct scd_softc *)bp->bio_dev->si_drv1;
/* if device invalidated (e.g. media change, door open), error */
SCD_LOCK(sc);
if (!(sc->data.flags & SCDVALID)) {
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 (!(sc->data.flags & SCDTOC)) {
bp->bio_error = EIO;
goto bad;
}
bp->bio_resid = 0;
/* queue it */
bioq_disksort(&sc->data.head, bp);
/* now check whether we can perform processing */
scd_start(sc);
SCD_UNLOCK(sc);
return;
bad:
bp->bio_flags |= BIO_ERROR;
done:
SCD_UNLOCK(sc);
bp->bio_resid = bp->bio_bcount;
biodone(bp);
return;
}
static void
scd_start(struct scd_softc *sc)
{
struct bio *bp;
SCD_ASSERT_LOCKED(sc);
if (sc->data.flags & SCDMBXBSY)
return;
bp = bioq_takefirst(&sc->data.head);
if (bp != 0) {
/* block found to process, dequeue */
sc->data.flags |= SCDMBXBSY;
} else {
/* nothing to do */
return;
}
sc->data.mbx.retry = 3;
sc->data.mbx.bp = bp;
scd_doread(sc, SCD_S_BEGIN, &(sc->data.mbx));
return;
}
static int
scdioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td)
{
struct scd_softc *sc;
int error;
sc = (struct scd_softc *)dev->si_drv1;
XDEBUG(sc, 1, "ioctl: cmd=0x%lx\n", cmd);
SCD_LOCK(sc);
if (!(sc->data.flags & SCDVALID)) {
SCD_UNLOCK(sc);
return (EIO);
}
error = 0;
switch (cmd) {
case DIOCGMEDIASIZE:
*(off_t *)addr = (off_t)sc->data.disksize * sc->data.blksize;
break;
case DIOCGSECTORSIZE:
*(u_int *)addr = sc->data.blksize;
break;
case CDIOCPLAYTRACKS:
error = scd_playtracks(sc, (struct ioc_play_track *) addr);
break;
case CDIOCPLAYBLOCKS:
error = EINVAL;
break;
case CDIOCPLAYMSF:
error = scd_playmsf(sc, (struct ioc_play_msf *) addr);
break;
case CDIOCREADSUBCHANNEL_SYSSPACE:
return scd_subchan(sc, (struct ioc_read_subchannel *) addr, 1);
case CDIOCREADSUBCHANNEL:
return scd_subchan(sc, (struct ioc_read_subchannel *) addr, 0);
case CDIOREADTOCHEADER:
error = scd_toc_header (sc, (struct ioc_toc_header *) addr);
break;
case CDIOREADTOCENTRYS:
return scd_toc_entrys (sc, (struct ioc_read_toc_entry*) addr);
case CDIOREADTOCENTRY:
error = scd_toc_entry (sc, (struct ioc_read_toc_single_entry*) addr);
break;
case CDIOCSETPATCH:
case CDIOCGETVOL:
case CDIOCSETVOL:
case CDIOCSETMONO:
case CDIOCSETSTERIO:
case CDIOCSETMUTE:
case CDIOCSETLEFT:
case CDIOCSETRIGHT:
error = EINVAL;
break;
case CDIOCRESUME:
error = scd_resume(sc);
break;
case CDIOCPAUSE:
error = scd_pause(sc);
break;
case CDIOCSTART:
error = EINVAL;
break;
case CDIOCSTOP:
error = scd_stop(sc);
break;
case CDIOCEJECT:
error = scd_eject(sc);
break;
case CDIOCALLOW:
break;
case CDIOCSETDEBUG:
#ifdef SCD_DEBUG
scd_debuglevel++;
#endif
break;
case CDIOCCLRDEBUG:
#ifdef SCD_DEBUG
scd_debuglevel = 0;
#endif
break;
default:
device_printf(sc->dev, "unsupported ioctl (cmd=0x%lx)\n", cmd);
error = ENOTTY;
break;
}
SCD_UNLOCK(sc);
return (error);
}
/***************************************************************
* lower level of driver starts here
**************************************************************/
static int
scd_playtracks(struct scd_softc *sc, struct ioc_play_track *pt)
{
struct ioc_play_msf msf;
int a = pt->start_track;
int z = pt->end_track;
int rc;
if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
if (rc == -ERR_NOT_SPINNING) {
if (spin_up(sc) != 0)
return (EIO);
rc = read_toc(sc);
}
if (rc != 0) {
print_error(sc, rc);
return (EIO);
}
}
XDEBUG(sc, 1, "playtracks from %d:%d to %d:%d\n",
a, pt->start_index, z, pt->end_index);
if ( a < sc->data.first_track
|| a > sc->data.last_track
|| a > z
|| z > sc->data.last_track)
return (EINVAL);
bcopy(sc->data.toc[a].start_msf, &msf.start_m, 3);
hsg2msf(msf2hsg(sc->data.toc[z+1].start_msf)-1, &msf.end_m);
return scd_play(sc, &msf);
}
/* The start/end msf is expected to be in bin format */
static int
scd_playmsf(struct scd_softc *sc, struct ioc_play_msf *msfin)
{
struct ioc_play_msf msf;
msf.start_m = bin2bcd(msfin->start_m);
msf.start_s = bin2bcd(msfin->start_s);
msf.start_f = bin2bcd(msfin->start_f);
msf.end_m = bin2bcd(msfin->end_m);
msf.end_s = bin2bcd(msfin->end_s);
msf.end_f = bin2bcd(msfin->end_f);
return scd_play(sc, &msf);
}
/* The start/end msf is expected to be in bcd format */
static int
scd_play(struct scd_softc *sc, struct ioc_play_msf *msf)
{
int i, rc;
XDEBUG(sc, 1, "playing: %02x:%02x:%02x -> %02x:%02x:%02x\n",
msf->start_m, msf->start_s, msf->start_f,
msf->end_m, msf->end_s, msf->end_f);
for (i = 0; i < 2; i++) {
rc = send_cmd(sc, CMD_PLAY_AUDIO, 7,
0x03,
msf->start_m, msf->start_s, msf->start_f,
msf->end_m, msf->end_s, msf->end_f);
if (rc == -ERR_NOT_SPINNING) {
sc->data.flags &= ~SCDSPINNING;
if (spin_up(sc) != 0)
return (EIO);
} else if (rc < 0) {
print_error(sc, rc);
return (EIO);
} else {
break;
}
}
sc->data.audio_status = CD_AS_PLAY_IN_PROGRESS;
bcopy((char *)msf, (char *)&sc->data.last_play, sizeof(struct ioc_play_msf));
return (0);
}
static int
scd_stop(struct scd_softc *sc)
{
(void)send_cmd(sc, CMD_STOP_AUDIO, 0);
sc->data.audio_status = CD_AS_PLAY_COMPLETED;
return (0);
}
static int
scd_pause(struct scd_softc *sc)
{
struct sony_subchannel_position_data subpos;
if (sc->data.audio_status != CD_AS_PLAY_IN_PROGRESS)
return (EINVAL);
if (read_subcode(sc, &subpos) != 0)
return (EIO);
if (send_cmd(sc, CMD_STOP_AUDIO, 0) != 0)
return (EIO);
sc->data.last_play.start_m = subpos.abs_msf[0];
sc->data.last_play.start_s = subpos.abs_msf[1];
sc->data.last_play.start_f = subpos.abs_msf[2];
sc->data.audio_status = CD_AS_PLAY_PAUSED;
XDEBUG(sc, 1, "pause @ %02x:%02x:%02x\n",
sc->data.last_play.start_m,
sc->data.last_play.start_s,
sc->data.last_play.start_f);
return (0);
}
static int
scd_resume(struct scd_softc *sc)
{
if (sc->data.audio_status != CD_AS_PLAY_PAUSED)
return (EINVAL);
return scd_play(sc, &sc->data.last_play);
}
static int
scd_eject(struct scd_softc *sc)
{
sc->data.audio_status = CD_AS_AUDIO_INVALID;
sc->data.flags &= ~(SCDSPINNING|SCDTOC);
if (send_cmd(sc, CMD_STOP_AUDIO, 0) != 0 ||
send_cmd(sc, CMD_SPIN_DOWN, 0) != 0 ||
send_cmd(sc, CMD_EJECT, 0) != 0)
{
return (EIO);
}
return (0);
}
static int
scd_subchan(struct scd_softc *sc, struct ioc_read_subchannel *sch, int nocopyout)
{
struct sony_subchannel_position_data q;
struct cd_sub_channel_info data;
XDEBUG(sc, 1, "subchan af=%d, df=%d\n",
sch->address_format, sch->data_format);
if (sch->address_format != CD_MSF_FORMAT)
return (EINVAL);
if (sch->data_format != CD_CURRENT_POSITION)
return (EINVAL);
if (read_subcode(sc, &q) != 0)
return (EIO);
data.header.audio_status = sc->data.audio_status;
data.what.position.data_format = CD_MSF_FORMAT;
data.what.position.track_number = bcd2bin(q.track_number);
data.what.position.reladdr.msf.unused = 0;
data.what.position.reladdr.msf.minute = bcd2bin(q.rel_msf[0]);
data.what.position.reladdr.msf.second = bcd2bin(q.rel_msf[1]);
data.what.position.reladdr.msf.frame = bcd2bin(q.rel_msf[2]);
data.what.position.absaddr.msf.unused = 0;
data.what.position.absaddr.msf.minute = bcd2bin(q.abs_msf[0]);
data.what.position.absaddr.msf.second = bcd2bin(q.abs_msf[1]);
data.what.position.absaddr.msf.frame = bcd2bin(q.abs_msf[2]);
SCD_UNLOCK(sc);
if (nocopyout == 0) {
if (copyout(&data, sch->data, min(sizeof(struct cd_sub_channel_info), sch->data_len))!=0)
return (EFAULT);
} else {
bcopy(&data, sch->data, min(sizeof(struct cd_sub_channel_info), sch->data_len));
}
return (0);
}
int
scd_probe(struct scd_softc *sc)
{
struct sony_drive_configuration drive_config;
int rc;
static char namebuf[8+16+8+3];
char *s = namebuf;
int loop_count = 0;
sc->data.flags = SCDPROBING;
bzero(&drive_config, sizeof(drive_config));
again:
/* Reset drive */
SCD_WRITE(sc, OREG_CONTROL, CBIT_RESET_DRIVE);
/* Calm down */
DELAY(300000);
/* Only the ATTENTION bit may be set */
if ((SCD_READ(sc, IREG_STATUS) & ~1) != 0) {
XDEBUG(sc, 1, "too many bits set. probe failed.\n");
return (ENXIO);
}
rc = send_cmd(sc, CMD_GET_DRIVE_CONFIG, 0);
if (rc != sizeof(drive_config)) {
/* Sometimes if the drive is playing audio I get */
/* the bad result 82. Fix by repeating the reset */
if (rc > 0 && loop_count++ == 0)
goto again;
return (ENXIO);
}
if (get_result(sc, rc, (u_char *)&drive_config) != 0)
return (ENXIO);
bcopy(drive_config.vendor, namebuf, 8);
s = namebuf+8;
while (*(s-1) == ' ') /* Strip trailing spaces */
s--;
*s++ = ' ';
bcopy(drive_config.product, s, 16);
s += 16;
while (*(s-1) == ' ')
s--;
*s++ = ' ';
bcopy(drive_config.revision, s, 8);
s += 8;
while (*(s-1) == ' ')
s--;
*s = 0;
sc->data.name = namebuf;
if (drive_config.config & 0x10)
sc->data.double_speed = 1;
else
sc->data.double_speed = 0;
return (0);
}
static int
read_subcode(struct scd_softc *sc, struct sony_subchannel_position_data *scp)
{
int rc;
rc = send_cmd(sc, CMD_GET_SUBCHANNEL_DATA, 0);
if (rc < 0 || rc < sizeof(*scp))
return (EIO);
if (get_result(sc, rc, (u_char *)scp) != 0)
return (EIO);
return (0);
}
/* State machine copied from mcd.c */
/* This (and the code in mcd.c) will not work with more than one drive */
/* because there is only one sc->ch_mbxsave below. Should fix that some day. */
/* (sc->ch_mbxsave & state should probably be included in the scd_data struct and */
/* the unit number used as first argument to scd_doread().) /Micke */
/* state machine to process read requests
* initialize with SCD_S_BEGIN: reset state machine
* SCD_S_WAITSTAT: wait for ready (!busy)
* SCD_S_WAITSPIN: wait for drive to spin up (if not spinning)
* SCD_S_WAITFIFO: wait for param fifo to get ready, them exec. command.
* SCD_S_WAITREAD: wait for data ready, read data
* SCD_S_WAITPARAM: wait for command result params, read them, error if bad data read.
*/
static void
scd_timeout(void *arg)
{
struct scd_softc *sc;
sc = (struct scd_softc *)arg;
SCD_ASSERT_LOCKED(sc);
scd_doread(sc, sc->ch_state, sc->ch_mbxsave);
}
static void
scd_doread(struct scd_softc *sc, int state, struct scd_mbx *mbxin)
{
struct scd_mbx *mbx = (state!=SCD_S_BEGIN) ? sc->ch_mbxsave : mbxin;
struct bio *bp = mbx->bp;
int i;
int blknum;
caddr_t addr;
static char sdata[3]; /* Must be preserved between calls to this function */
SCD_ASSERT_LOCKED(sc);
loop:
switch (state) {
case SCD_S_BEGIN:
mbx = sc->ch_mbxsave = mbxin;
case SCD_S_BEGIN1:
/* get status */
mbx->count = RDELAY_WAIT;
process_attention(sc);
goto trystat;
case SCD_S_WAITSTAT:
sc->ch_state = SCD_S_WAITSTAT;
callout_stop(&sc->timer);
if (mbx->count-- <= 0) {
device_printf(sc->dev, "timeout. drive busy.\n");
goto harderr;
}
trystat:
if (IS_BUSY(sc)) {
sc->ch_state = SCD_S_WAITSTAT;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
}
process_attention(sc);
/* reject, if audio active */
if (sc->data.audio_status & CD_AS_PLAY_IN_PROGRESS) {
device_printf(sc->dev, "audio is active\n");
goto harderr;
}
mbx->sz = sc->data.blksize;
/* for first block */
mbx->nblk = (bp->bio_bcount + (mbx->sz-1)) / mbx->sz;
mbx->skip = 0;
nextblock:
if (!(sc->data.flags & SCDVALID))
goto changed;
blknum = bp->bio_offset / mbx->sz + mbx->skip/mbx->sz;
XDEBUG(sc, 2, "scd_doread: read blknum=%d\n", blknum);
/* build parameter block */
hsg2msf(blknum, sdata);
SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
SCD_WRITE(sc, OREG_CONTROL, CBIT_RPARAM_CLEAR);
SCD_WRITE(sc, OREG_CONTROL, CBIT_DATA_READY_CLEAR);
if (FSTATUS_BIT(sc, FBIT_WPARAM_READY))
goto writeparam;
mbx->count = 100;
sc->ch_state = SCD_S_WAITFIFO;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
case SCD_S_WAITSPIN:
sc->ch_state = SCD_S_WAITSPIN;
callout_stop(&sc->timer);
if (mbx->count-- <= 0) {
device_printf(sc->dev, "timeout waiting for drive to spin up.\n");
goto harderr;
}
if (!STATUS_BIT(sc, SBIT_RESULT_READY)) {
sc->ch_state = SCD_S_WAITSPIN;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
}
SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
switch ((i = SCD_READ(sc, IREG_RESULT)) & 0xf0) {
case 0x20:
i = SCD_READ(sc, IREG_RESULT);
print_error(sc, i);
goto harderr;
case 0x00:
(void)SCD_READ(sc, IREG_RESULT);
sc->data.flags |= SCDSPINNING;
break;
}
XDEBUG(sc, 1, "DEBUG: spin up complete\n");
state = SCD_S_BEGIN1;
goto loop;
case SCD_S_WAITFIFO:
sc->ch_state = SCD_S_WAITFIFO;
callout_stop(&sc->timer);
if (mbx->count-- <= 0) {
device_printf(sc->dev, "timeout. write param not ready.\n");
goto harderr;
}
if (!FSTATUS_BIT(sc, FBIT_WPARAM_READY)) {
sc->ch_state = SCD_S_WAITFIFO;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
}
XDEBUG(sc, 1, "mbx->count (writeparamwait) = %d(%d)\n", mbx->count, 100);
writeparam:
/* The reason this test isn't done 'till now is to make sure */
/* that it is ok to send the SPIN_UP cmd below. */
if (!(sc->data.flags & SCDSPINNING)) {
XDEBUG(sc, 1, "spinning up drive ...\n");
SCD_WRITE(sc, OREG_COMMAND, CMD_SPIN_UP);
mbx->count = 300;
sc->ch_state = SCD_S_WAITSPIN;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
}
/* send the read command */
SCD_WRITE(sc, OREG_WPARAMS, sdata[0]);
SCD_WRITE(sc, OREG_WPARAMS, sdata[1]);
SCD_WRITE(sc, OREG_WPARAMS, sdata[2]);
SCD_WRITE(sc, OREG_WPARAMS, 0);
SCD_WRITE(sc, OREG_WPARAMS, 0);
SCD_WRITE(sc, OREG_WPARAMS, 1);
SCD_WRITE(sc, OREG_COMMAND, CMD_READ);
mbx->count = RDELAY_WAITREAD;
for (i = 0; i < 50; i++) {
if (STATUS_BIT(sc, SBIT_DATA_READY))
goto got_data;
DELAY(100);
}
sc->ch_state = SCD_S_WAITREAD;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
case SCD_S_WAITREAD:
sc->ch_state = SCD_S_WAITREAD;
callout_stop(&sc->timer);
if (mbx->count-- <= 0) {
if (STATUS_BIT(sc, SBIT_RESULT_READY))
goto got_param;
device_printf(sc->dev, "timeout while reading data\n");
goto readerr;
}
if (!STATUS_BIT(sc, SBIT_DATA_READY)) {
process_attention(sc);
if (!(sc->data.flags & SCDVALID))
goto changed;
sc->ch_state = SCD_S_WAITREAD;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
}
XDEBUG(sc, 2, "mbx->count (after RDY_BIT) = %d(%d)\n", mbx->count, RDELAY_WAITREAD);
got_data:
/* data is ready */
addr = bp->bio_data + mbx->skip;
SCD_WRITE(sc, OREG_CONTROL, CBIT_DATA_READY_CLEAR);
SCD_READ_MULTI(sc, IREG_DATA, addr, mbx->sz);
mbx->count = 100;
for (i = 0; i < 20; i++) {
if (STATUS_BIT(sc, SBIT_RESULT_READY))
goto waitfor_param;
DELAY(100);
}
goto waitfor_param;
case SCD_S_WAITPARAM:
sc->ch_state = SCD_S_WAITPARAM;
callout_stop(&sc->timer);
if (mbx->count-- <= 0) {
device_printf(sc->dev, "timeout waiting for params\n");
goto readerr;
}
waitfor_param:
if (!STATUS_BIT(sc, SBIT_RESULT_READY)) {
sc->ch_state = SCD_S_WAITPARAM;
callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
return;
}
#ifdef SCD_DEBUG
if (mbx->count < 100 && scd_debuglevel > 0)
device_printf(sc->dev, "mbx->count (paramwait) = %d(%d)\n", mbx->count, 100);
#endif
got_param:
SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
switch ((i = SCD_READ(sc, IREG_RESULT)) & 0xf0) {
case 0x50:
switch (i) {
case ERR_FATAL_READ_ERROR1:
case ERR_FATAL_READ_ERROR2:
device_printf(sc->dev, "unrecoverable read error 0x%x\n", i);
goto harderr;
}
break;
case 0x20:
i = SCD_READ(sc, IREG_RESULT);
switch (i) {
case ERR_NOT_SPINNING:
XDEBUG(sc, 1, "read error: drive not spinning\n");
if (mbx->retry-- > 0) {
state = SCD_S_BEGIN1;
sc->data.flags &= ~SCDSPINNING;
goto loop;
}
goto harderr;
default:
print_error(sc, i);
goto readerr;
}
case 0x00:
i = SCD_READ(sc, IREG_RESULT);
break;
}
if (--mbx->nblk > 0) {
mbx->skip += mbx->sz;
goto nextblock;
}
/* return buffer */
bp->bio_resid = 0;
biodone(bp);
sc->data.flags &= ~SCDMBXBSY;
scd_start(sc);
return;
}
readerr:
if (mbx->retry-- > 0) {
device_printf(sc->dev, "retrying ...\n");
state = SCD_S_BEGIN1;
goto loop;
}
harderr:
/* invalidate the buffer */
bp->bio_error = EIO;
bp->bio_flags |= BIO_ERROR;
bp->bio_resid = bp->bio_bcount;
biodone(bp);
sc->data.flags &= ~SCDMBXBSY;
scd_start(sc);
return;
changed:
device_printf(sc->dev, "media changed\n");
goto harderr;
}
static void
hsg2msf(int hsg, bcd_t *msf)
{
hsg += 150;
M_msf(msf) = bin2bcd(hsg / 4500);
hsg %= 4500;
S_msf(msf) = bin2bcd(hsg / 75);
F_msf(msf) = bin2bcd(hsg % 75);
}
static int
msf2hsg(bcd_t *msf)
{
return (bcd2bin(M_msf(msf)) * 60 +
bcd2bin(S_msf(msf))) * 75 +
bcd2bin(F_msf(msf)) - 150;
}
static void
process_attention(struct scd_softc *sc)
{
unsigned char code;
int count = 0;
while (IS_ATTENTION(sc) && count++ < 30) {
SCD_WRITE(sc, OREG_CONTROL, CBIT_ATTENTION_CLEAR);
code = SCD_READ(sc, IREG_RESULT);
#ifdef SCD_DEBUG
if (scd_debuglevel > 0) {
if (count == 1)
device_printf(sc->dev, "DEBUG: ATTENTIONS = 0x%x", code);
else
printf(",0x%x", code);
}
#endif
switch (code) {
case ATTEN_SPIN_DOWN:
sc->data.flags &= ~SCDSPINNING;
break;
case ATTEN_SPIN_UP_DONE:
sc->data.flags |= SCDSPINNING;
break;
case ATTEN_AUDIO_DONE:
sc->data.audio_status = CD_AS_PLAY_COMPLETED;
break;
case ATTEN_DRIVE_LOADED:
sc->data.flags &= ~(SCDTOC|SCDSPINNING|SCDVALID);
sc->data.audio_status = CD_AS_AUDIO_INVALID;
break;
case ATTEN_EJECT_PUSHED:
sc->data.flags &= ~SCDVALID;
break;
}
DELAY(100);
}
#ifdef SCD_DEBUG
if (scd_debuglevel > 0 && count > 0)
printf("\n");
#endif
}
/* Returns 0 OR sony error code */
static int
spin_up(struct scd_softc *sc)
{
unsigned char res_reg[12];
unsigned int res_size;
int rc;
int loop_count = 0;
again:
rc = send_cmd(sc, CMD_SPIN_UP, 0, 0, res_reg, &res_size);
if (rc != 0) {
XDEBUG(sc, 2, "CMD_SPIN_UP error 0x%x\n", rc);
return (rc);
}
if (!(sc->data.flags & SCDTOC)) {
rc = send_cmd(sc, CMD_READ_TOC, 0);
if (rc == ERR_NOT_SPINNING) {
if (loop_count++ < 3)
goto again;
return (rc);
}
if (rc != 0)
return (rc);
}
sc->data.flags |= SCDSPINNING;
return (0);
}
static struct sony_tracklist *
get_tl(struct sony_toc *toc, int size)
{
struct sony_tracklist *tl = &toc->tracks[0];
if (tl->track != 0xb0)
return (tl);
if (tl->track != 0xb1)
return (tl);
tl = (struct sony_tracklist *)((char *)tl + 9);
if (tl->track != 0xb2)
return (tl);
tl = (struct sony_tracklist *)((char *)tl + 9);
if (tl->track != 0xb3)
return (tl);
tl = (struct sony_tracklist *)((char *)tl + 9);
if (tl->track != 0xb4)
return (tl);
tl = (struct sony_tracklist *)((char *)tl + 9);
if (tl->track != 0xc0)
return (tl);
tl = (struct sony_tracklist *)((char *)tl + 9);
return (tl);
}
static int
read_toc(struct scd_softc *sc)
{
struct sony_toc toc;
struct sony_tracklist *tl;
int rc, i, j;
u_long first, last;
rc = send_cmd(sc, CMD_GET_TOC, 1, 1);
if (rc < 0)
return (rc);
if (rc > sizeof(toc)) {
device_printf(sc->dev, "program error: toc too large (%d)\n", rc);
return (EIO);
}
if (get_result(sc, rc, (u_char *)&toc) != 0)
return (EIO);
XDEBUG(sc, 1, "toc read. len = %d, sizeof(toc) = %d\n", rc, sizeof(toc));
tl = get_tl(&toc, rc);
first = msf2hsg(tl->start_msf);
last = msf2hsg(toc.lead_out_start_msf);
sc->data.blksize = SCDBLKSIZE;
sc->data.disksize = last*sc->data.blksize/DEV_BSIZE;
XDEBUG(sc, 1, "firstsector = %ld, lastsector = %ld", first, last);
sc->data.first_track = bcd2bin(toc.first_track);
sc->data.last_track = bcd2bin(toc.last_track);
if (sc->data.last_track > (MAX_TRACKS-2))
sc->data.last_track = MAX_TRACKS-2;
for (j = 0, i = sc->data.first_track; i <= sc->data.last_track; i++, j++) {
sc->data.toc[i].adr = tl[j].adr;
sc->data.toc[i].ctl = tl[j].ctl; /* for xcdplayer */
bcopy(tl[j].start_msf, sc->data.toc[i].start_msf, 3);
#ifdef SCD_DEBUG
if (scd_debuglevel > 0) {
if ((j % 3) == 0) {
printf("\n");
device_printf(sc->dev, "tracks ");
}
printf("[%03d: %2d %2d %2d] ", i,
bcd2bin(sc->data.toc[i].start_msf[0]),
bcd2bin(sc->data.toc[i].start_msf[1]),
bcd2bin(sc->data.toc[i].start_msf[2]));
}
#endif
}
bcopy(toc.lead_out_start_msf, sc->data.toc[sc->data.last_track+1].start_msf, 3);
#ifdef SCD_DEBUG
if (scd_debuglevel > 0) {
i = sc->data.last_track+1;
printf("[END: %2d %2d %2d]\n",
bcd2bin(sc->data.toc[i].start_msf[0]),
bcd2bin(sc->data.toc[i].start_msf[1]),
bcd2bin(sc->data.toc[i].start_msf[2]));
}
#endif
sc->data.flags |= SCDTOC;
return (0);
}
static void
init_drive(struct scd_softc *sc)
{
int rc;
rc = send_cmd(sc, CMD_SET_DRIVE_PARAM, 2,
0x05, 0x03 | ((sc->data.double_speed) ? 0x04: 0));
if (rc != 0)
device_printf(sc->dev, "Unable to set parameters. Errcode = 0x%x\n", rc);
}
/* Returns 0 or errno */
static int
get_result(struct scd_softc *sc, int result_len, u_char *result)
{
int loop_index = 2; /* send_cmd() reads two bytes ... */
XDEBUG(sc, 1, "DEBUG: get_result: bytes=%d\n", result_len);
while (result_len-- > 0) {
if (loop_index++ >= 10) {
loop_index = 1;
if (waitfor_status_bits(sc, SBIT_RESULT_READY, 0))
return (EIO);
SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
}
if (result)
*result++ = SCD_READ(sc, IREG_RESULT);
else
(void)SCD_READ(sc, IREG_RESULT);
}
return (0);
}
/* Returns -0x100 for timeout, -(drive error code) OR number of result bytes */
static int
send_cmd(struct scd_softc *sc, u_char cmd, u_int nargs, ...)
{
va_list ap;
u_char c;
int rc;
int i;
if (waitfor_status_bits(sc, 0, SBIT_BUSY)) {
device_printf(sc->dev, "drive busy\n");
return (-0x100);
}
XDEBUG(sc, 1, "DEBUG: send_cmd: cmd=0x%x nargs=%d", cmd, nargs);
SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
SCD_WRITE(sc, OREG_CONTROL, CBIT_RPARAM_CLEAR);
for (i = 0; i < 100; i++)
if (FSTATUS_BIT(sc, FBIT_WPARAM_READY))
break;
if (!FSTATUS_BIT(sc, FBIT_WPARAM_READY)) {
XDEBUG(sc, 1, "\nwparam timeout\n");
return (-EIO);
}
va_start(ap, nargs);
for (i = 0; i < nargs; i++) {
c = (u_char)va_arg(ap, int);
SCD_WRITE(sc, OREG_WPARAMS, c);
XDEBUG(sc, 1, ",{0x%x}", c);
}
va_end(ap);
XDEBUG(sc, 1, "\n");
SCD_WRITE(sc, OREG_COMMAND, cmd);
rc = waitfor_status_bits(sc, SBIT_RESULT_READY, SBIT_BUSY);
if (rc)
return (-0x100);
SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
switch ((rc = SCD_READ(sc, IREG_RESULT)) & 0xf0) {
case 0x20:
rc = SCD_READ(sc, IREG_RESULT);
/* FALLTHROUGH */
case 0x50:
XDEBUG(sc, 1, "DEBUG: send_cmd: drive_error=0x%x\n", rc);
return (-rc);
case 0x00:
default:
rc = SCD_READ(sc, IREG_RESULT);
XDEBUG(sc, 1, "DEBUG: send_cmd: result_len=%d\n", rc);
return (rc);
}
}
static void
print_error(struct scd_softc *sc, int errcode)
{
switch (errcode) {
case -ERR_CD_NOT_LOADED:
device_printf(sc->dev, "door is open\n");
break;
case -ERR_NO_CD_INSIDE:
device_printf(sc->dev, "no cd inside\n");
break;
default:
if (errcode == -0x100 || errcode > 0)
device_printf(sc->dev, "device timeout\n");
else
device_printf(sc->dev, "unexpected error 0x%x\n", -errcode);
break;
}
}
/* Returns 0 or errno value */
static int
waitfor_status_bits(struct scd_softc *sc, int bits_set, int bits_clear)
{
u_int flags = sc->data.flags;
u_int max_loop;
u_char c = 0;
if (flags & SCDPROBING) {
max_loop = 0;
while (max_loop++ < 1000) {
c = SCD_READ(sc, IREG_STATUS);
if (c == 0xff)
return (EIO);
if (c & SBIT_ATTENTION) {
process_attention(sc);
continue;
}
if ((c & bits_set) == bits_set &&
(c & bits_clear) == 0)
{
break;
}
DELAY(10000);
}
} else {
max_loop = 100;
while (max_loop-- > 0) {
c = SCD_READ(sc, IREG_STATUS);
if (c & SBIT_ATTENTION) {
process_attention(sc);
continue;
}
if ((c & bits_set) == bits_set &&
(c & bits_clear) == 0)
{
break;
}
SCD_UNLOCK(sc);
pause("waitfor", hz/10);
SCD_LOCK(sc);
}
}
if ((c & bits_set) == bits_set &&
(c & bits_clear) == 0)
{
return (0);
}
#ifdef SCD_DEBUG
if (scd_debuglevel > 0)
device_printf(sc->dev, "DEBUG: waitfor: TIMEOUT (0x%x,(0x%x,0x%x))\n", c, bits_set, bits_clear);
else
#endif
device_printf(sc->dev, "timeout.\n");
return (EIO);
}
/* these two routines for xcdplayer - "borrowed" from mcd.c */
static int
scd_toc_header (struct scd_softc *sc, struct ioc_toc_header* th)
{
int rc;
if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
print_error(sc, rc);
return (EIO);
}
th->starting_track = sc->data.first_track;
th->ending_track = sc->data.last_track;
th->len = 0; /* not used */
return (0);
}
static int
scd_toc_entrys (struct scd_softc *sc, struct ioc_read_toc_entry *te)
{
struct cd_toc_entry toc_entry;
int rc, i, len = te->data_len;
if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
print_error(sc, rc);
return (EIO);
}
/* find the toc to copy*/
i = te->starting_track;
if (i == SCD_LASTPLUS1)
i = sc->data.last_track + 1;
/* verify starting track */
if (i < sc->data.first_track || i > sc->data.last_track+1)
return (EINVAL);
/* valid length ? */
if (len < sizeof(struct cd_toc_entry)
|| (len % sizeof(struct cd_toc_entry)) != 0)
return (EINVAL);
/* copy the toc data */
toc_entry.control = sc->data.toc[i].ctl;
toc_entry.addr_type = te->address_format;
toc_entry.track = i;
if (te->address_format == CD_MSF_FORMAT) {
toc_entry.addr.msf.unused = 0;
toc_entry.addr.msf.minute = bcd2bin(sc->data.toc[i].start_msf[0]);
toc_entry.addr.msf.second = bcd2bin(sc->data.toc[i].start_msf[1]);
toc_entry.addr.msf.frame = bcd2bin(sc->data.toc[i].start_msf[2]);
}
SCD_UNLOCK(sc);
/* copy the data back */
if (copyout(&toc_entry, te->data, sizeof(struct cd_toc_entry)) != 0)
return (EFAULT);
return (0);
}
static int
scd_toc_entry (struct scd_softc *sc, struct ioc_read_toc_single_entry *te)
{
struct cd_toc_entry toc_entry;
int rc, i;
if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
print_error(sc, rc);
return (EIO);
}
/* find the toc to copy*/
i = te->track;
if (i == SCD_LASTPLUS1)
i = sc->data.last_track + 1;
/* verify starting track */
if (i < sc->data.first_track || i > sc->data.last_track+1)
return (EINVAL);
/* copy the toc data */
toc_entry.control = sc->data.toc[i].ctl;
toc_entry.addr_type = te->address_format;
toc_entry.track = i;
if (te->address_format == CD_MSF_FORMAT) {
toc_entry.addr.msf.unused = 0;
toc_entry.addr.msf.minute = bcd2bin(sc->data.toc[i].start_msf[0]);
toc_entry.addr.msf.second = bcd2bin(sc->data.toc[i].start_msf[1]);
toc_entry.addr.msf.frame = bcd2bin(sc->data.toc[i].start_msf[2]);
}
/* copy the data back */
bcopy(&toc_entry, &te->entry, sizeof(struct cd_toc_entry));
return (0);
}
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