int
mcd_playblocks(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",
device_xname(sc->sc_dev), 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);
}
static int
mcd_playblocks(struct mcd_softc *sc, struct ioc_play_blocks *p)
{
struct mcd_read2 pb;
if (sc->data.debug)
device_printf(sc->dev, "playblocks: blkno %d length %d\n",
p->blk, p->len);
if (p->blk > sc->data.disksize || p->len > sc->data.disksize ||
p->blk < 0 || p->len < 0 ||
(p->blk + p->len) > sc->data.disksize)
return (EINVAL);
hsg2msf(p->blk, pb.start_msf);
hsg2msf(p->blk + p->len, pb.end_msf);
if (mcd_setmode(sc, MCD_MD_COOKED) != 0)
return (EIO);
return mcd_play(sc, &pb);
}
static void
mcd_doread(struct mcd_softc *sc, int state, struct mcd_mbx *mbxin)
{
struct mcd_mbx *mbx;
struct bio *bp;
int rm, i, k;
struct mcd_read2 rbuf;
int blknum;
caddr_t addr;
mbx = (state!=MCD_S_BEGIN) ? sc->ch_mbxsave : mbxin;
bp = mbx->bp;
loop:
switch (state) {
case MCD_S_BEGIN:
mbx = sc->ch_mbxsave = mbxin;
case MCD_S_BEGIN1:
retry_status:
/* get status */
MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDGETSTAT);
mbx->count = RDELAY_WAITSTAT;
sc->ch_state = MCD_S_WAITSTAT;
sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */
return;
case MCD_S_WAITSTAT:
sc->ch_state = MCD_S_WAITSTAT;
untimeout(mcd_timeout,(caddr_t)sc, sc->ch);
if (mbx->count-- >= 0) {
if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) {
sc->ch_state = MCD_S_WAITSTAT;
timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */
return;
}
sc->data.status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF;
if (sc->data.status & MCD_ST_CMDCHECK)
goto retry_status;
if (mcd_setflags(sc) < 0)
goto changed;
MCD_TRACE("got WAITSTAT delay=%d\n",
RDELAY_WAITSTAT-mbx->count);
/* reject, if audio active */
if (sc->data.status & MCDAUDIOBSY) {
device_printf(sc->dev, "audio is active\n");
goto readerr;
}
retry_mode:
/* to check for raw/cooked mode */
if (sc->data.flags & MCDREADRAW) {
rm = MCD_MD_RAW;
mbx->sz = MCDRBLK;
} else {
rm = MCD_MD_COOKED;
mbx->sz = sc->data.blksize;
}
if (rm == sc->data.curr_mode)
goto modedone;
mbx->count = RDELAY_WAITMODE;
sc->data.curr_mode = MCD_MD_UNKNOWN;
mbx->mode = rm;
MCD_WRITE(sc, MCD_REG_COMMAND, MCD_CMDSETMODE);
MCD_WRITE(sc, MCD_REG_COMMAND, rm);
sc->ch_state = MCD_S_WAITMODE;
sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */
return;
} else {
device_printf(sc->dev, "timeout getstatus\n");
goto readerr;
}
case MCD_S_WAITMODE:
sc->ch_state = MCD_S_WAITMODE;
untimeout(mcd_timeout, (caddr_t)sc, sc->ch);
if (mbx->count-- < 0) {
device_printf(sc->dev, "timeout set mode\n");
goto readerr;
}
if (MCD_READ(sc, MCD_FLAGS) & MFL_STATUS_NOT_AVAIL) {
sc->ch_state = MCD_S_WAITMODE;
sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100);
return;
}
sc->data.status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF;
if (sc->data.status & MCD_ST_CMDCHECK) {
sc->data.curr_mode = MCD_MD_UNKNOWN;
goto retry_mode;
}
if (mcd_setflags(sc) < 0)
goto changed;
sc->data.curr_mode = mbx->mode;
MCD_TRACE("got WAITMODE delay=%d\n",
RDELAY_WAITMODE-mbx->count);
modedone:
/* for first block */
mbx->nblk = (bp->bio_bcount + (mbx->sz-1)) / mbx->sz;
mbx->skip = 0;
nextblock:
blknum = (bp->bio_blkno / (mbx->sz/DEV_BSIZE))
+ mbx->skip/mbx->sz;
MCD_TRACE("mcd_doread: read blknum=%d for bp=%p\n",
blknum, bp);
/* build parameter block */
hsg2msf(blknum,rbuf.start_msf);
retry_read:
/* send the read command */
critical_enter();
MCD_WRITE(sc, MCD_REG_COMMAND, sc->data.read_command);
MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[0]);
MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[1]);
MCD_WRITE(sc, MCD_REG_COMMAND, rbuf.start_msf[2]);
MCD_WRITE(sc, MCD_REG_COMMAND, 0);
MCD_WRITE(sc, MCD_REG_COMMAND, 0);
MCD_WRITE(sc, MCD_REG_COMMAND, 1);
critical_exit();
/* Spin briefly (<= 2ms) to avoid missing next block */
for (i = 0; i < 20; i++) {
k = MCD_READ(sc, MCD_FLAGS);
if (!(k & MFL_DATA_NOT_AVAIL))
goto got_it;
DELAY(100);
}
mbx->count = RDELAY_WAITREAD;
sc->ch_state = MCD_S_WAITREAD;
sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */
return;
case MCD_S_WAITREAD:
sc->ch_state = MCD_S_WAITREAD;
untimeout(mcd_timeout, (caddr_t)sc, sc->ch);
if (mbx->count-- > 0) {
k = MCD_READ(sc, MCD_FLAGS);
if (!(k & MFL_DATA_NOT_AVAIL)) { /* XXX */
MCD_TRACE("got data delay=%d\n",
RDELAY_WAITREAD-mbx->count);
got_it:
/* data is ready */
addr = bp->bio_data + mbx->skip;
MCD_WRITE(sc, MCD_REG_CTL2,0x04); /* XXX */
for (i=0; i<mbx->sz; i++)
*addr++ = MCD_READ(sc, MCD_REG_RDATA);
MCD_WRITE(sc, MCD_REG_CTL2,0x0c); /* XXX */
k = MCD_READ(sc, MCD_FLAGS);
/* If we still have some junk, read it too */
if (!(k & MFL_DATA_NOT_AVAIL)) {
MCD_WRITE(sc, MCD_REG_CTL2, 0x04); /* XXX */
(void)MCD_READ(sc, MCD_REG_RDATA);
(void)MCD_READ(sc, MCD_REG_RDATA);
MCD_WRITE(sc, MCD_REG_CTL2, 0x0c); /* XXX */
}
if (--mbx->nblk > 0) {
mbx->skip += mbx->sz;
goto nextblock;
}
/* return buffer */
bp->bio_resid = 0;
biodone(bp);
sc->data.flags &= ~(MCDMBXBSY|MCDREADRAW);
mcd_start(sc);
return;
}
if (!(k & MFL_STATUS_NOT_AVAIL)) {
sc->data.status = MCD_READ(sc, MCD_REG_STATUS) & 0xFF;
if (sc->data.status & MCD_ST_CMDCHECK)
goto retry_read;
if (mcd_setflags(sc) < 0)
goto changed;
}
sc->ch_state = MCD_S_WAITREAD;
sc->ch = timeout(mcd_timeout, (caddr_t)sc, hz/100); /* XXX */
return;
} else {
device_printf(sc->dev, "timeout read data\n");
goto readerr;
}
}
readerr:
if (mbx->retry-- > 0) {
device_printf(sc->dev, "retrying\n");
state = MCD_S_BEGIN1;
goto loop;
}
harderr:
/* invalidate the buffer */
bp->bio_flags |= BIO_ERROR;
bp->bio_resid = bp->bio_bcount;
biodone(bp);
sc->data.flags &= ~(MCDMBXBSY|MCDREADRAW);
mcd_start(sc);
return;
changed:
device_printf(sc->dev, "media changed\n");
goto harderr;
#ifdef NOTDEF
device_printf(sc->dev, "unit timeout, resetting\n");
MCD_WRITE(sc, MCD_REG_RESET, MCD_CMDRESET);
DELAY(300000);
(void)mcd_getstat(sc, 1);
(void)mcd_getstat(sc, 1);
/*sc->data.status &= ~MCDDSKCHNG; */
sc->data.debug = 1; /* preventive set debug mode */
#endif
}
static void
mcd_poll(void)
{
int st;
if (mcd_error)
{
if (mcd_error & 0xA5)
{
printk("mcd: I/O error 0x%02x", mcd_error);
if (mcd_error & 0x80)
printk(" (Door open)");
if (mcd_error & 0x20)
printk(" (Disk changed)");
if (mcd_error & 0x04)
{
printk(" (Read error)"); /* Bitch about the problem. */
/* Time to get fancy! If at 2x speed and 1 error, drop to 1x speed! */
/* Interesting how it STAYS at MCD_RETRY_ATTEMPTS on first error! */
/* But I find that rather HANDY!!! */
/* Neat! it REALLY WORKS on those LOW QUALITY CD's!!! Smile! :) */
/* AJK [06/17/95] */
/* Slap the CD down to single speed! */
if (mcdDouble == 1 && McdTries == MCD_RETRY_ATTEMPTS && MCMD_DATA_READ == MCMD_2X_READ)
{
MCMD_DATA_READ = MCMD_PLAY_READ; /* Uhhh, Ummmm, muhuh-huh! */
mcd1xhold = SINGLE_HOLD_SECTORS; /* Hey Beavis! */
printk(" Speed now 1x"); /* Pull my finger! */
}
}
printk("\n");
mcd_invalidate_buffers();
#ifdef WARN_IF_READ_FAILURE
if (McdTries == MCD_RETRY_ATTEMPTS)
printk("mcd: read of block %d failed\n", mcd_next_bn);
#endif
if (!McdTries--)
{
/* Nuts! This cd is ready for recycling! */
/* When WAS the last time YOU cleaned it CORRECTLY?! */
printk("mcd: read of block %d failed, giving up\n", mcd_next_bn);
if (mcd_transfer_is_active)
{
McdTries = 0;
goto ret;
}
if (CURRENT_VALID)
end_request(0);
McdTries = MCD_RETRY_ATTEMPTS;
}
}
mcd_error = 0;
mcd_state = MCD_S_STOP;
}
/* Switch back to Double speed if enough GOOD sectors were read! */
/* Are we a double speed with a crappy CD?! */
if (mcdDouble == 1 && McdTries == MCD_RETRY_ATTEMPTS && MCMD_DATA_READ == MCMD_PLAY_READ)
{
/* We ARE a double speed and we ARE bitching! */
if (mcd1xhold == 0) /* Okay, Like are we STILL at single speed? */
{ /* We need to switch back to double speed now... */
MCMD_DATA_READ = MCMD_2X_READ; /* Uhhh... BACK You GO! */
printk("mcd: Switching back to 2X speed!\n"); /* Tell 'em! */
}
else mcd1xhold--; /* No?! Count down the good reads some more... */
/* and try, try again! */
}
immediately:
switch (mcd_state) {
case MCD_S_IDLE:
#ifdef TEST3
printk("MCD_S_IDLE\n");
#endif
return;
case MCD_S_START:
#ifdef TEST3
printk("MCD_S_START\n");
#endif
outb(MCMD_GET_STATUS, MCDPORT(0));
mcd_state = mcd_mode == 1 ? MCD_S_READ : MCD_S_MODE;
McdTimeout = 3000;
break;
case MCD_S_MODE:
#ifdef TEST3
printk("MCD_S_MODE\n");
#endif
if ((st = mcdStatus()) != -1) {
if (st & MST_DSK_CHG) {
mcdDiskChanged = 1;
tocUpToDate = 0;
mcd_invalidate_buffers();
}
set_mode_immediately:
if ((st & MST_DOOR_OPEN) || !(st & MST_READY)) {
mcdDiskChanged = 1;
tocUpToDate = 0;
if (mcd_transfer_is_active) {
mcd_state = MCD_S_START;
goto immediately;
}
printk((st & MST_DOOR_OPEN) ? "mcd: door open\n" : "mcd: disk removed\n");
mcd_state = MCD_S_IDLE;
while (CURRENT_VALID)
end_request(0);
return;
}
outb(MCMD_SET_MODE, MCDPORT(0));
outb(1, MCDPORT(0));
mcd_mode = 1;
mcd_state = MCD_S_READ;
McdTimeout = 3000;
}
break;
case MCD_S_READ:
#ifdef TEST3
printk("MCD_S_READ\n");
#endif
if ((st = mcdStatus()) != -1) {
if (st & MST_DSK_CHG) {
mcdDiskChanged = 1;
tocUpToDate = 0;
mcd_invalidate_buffers();
}
read_immediately:
if ((st & MST_DOOR_OPEN) || !(st & MST_READY)) {
mcdDiskChanged = 1;
tocUpToDate = 0;
if (mcd_transfer_is_active) {
mcd_state = MCD_S_START;
goto immediately;
}
printk((st & MST_DOOR_OPEN) ? "mcd: door open\n" : "mcd: disk removed\n");
mcd_state = MCD_S_IDLE;
while (CURRENT_VALID)
end_request(0);
return;
}
if (CURRENT_VALID) {
struct mcd_Play_msf msf;
mcd_next_bn = CURRENT -> sector / 4;
hsg2msf(mcd_next_bn, &msf.start);
msf.end.min = ~0;
msf.end.sec = ~0;
msf.end.frame = ~0;
sendMcdCmd(MCMD_DATA_READ, &msf);
mcd_state = MCD_S_DATA;
McdTimeout = READ_TIMEOUT;
} else {
mcd_state = MCD_S_STOP;
goto immediately;
}
}
break;
case MCD_S_DATA:
#ifdef TEST3
printk("MCD_S_DATA\n");
#endif
st = inb(MCDPORT(1)) & (MFL_STATUSorDATA);
data_immediately:
#ifdef TEST5
printk("Status %02x\n",st);
#endif
switch (st) {
case MFL_DATA:
#ifdef WARN_IF_READ_FAILURE
if (McdTries == 5)
printk("mcd: read of block %d failed\n", mcd_next_bn);
#endif
if (!McdTries--) {
printk("mcd: read of block %d failed, giving up\n", mcd_next_bn);
if (mcd_transfer_is_active) {
McdTries = 0;
break;
}
if (CURRENT_VALID)
end_request(0);
McdTries = 5;
}
mcd_state = MCD_S_START;
McdTimeout = READ_TIMEOUT;
goto immediately;
case MFL_STATUSorDATA:
break;
default:
McdTries = 5;
if (!CURRENT_VALID && mcd_buf_in == mcd_buf_out) {
mcd_state = MCD_S_STOP;
goto immediately;
}
mcd_buf_bn[mcd_buf_in] = -1;
READ_DATA(MCDPORT(0), mcd_buf + 2048 * mcd_buf_in, 2048);
mcd_buf_bn[mcd_buf_in] = mcd_next_bn++;
if (mcd_buf_out == -1)
mcd_buf_out = mcd_buf_in;
mcd_buf_in = mcd_buf_in + 1 == MCD_BUF_SIZ ? 0 : mcd_buf_in + 1;
if (!mcd_transfer_is_active) {
while (CURRENT_VALID) {
mcd_transfer();
if (CURRENT -> nr_sectors == 0)
end_request(1);
else
break;
}
}
if (CURRENT_VALID
&& (CURRENT -> sector / 4 < mcd_next_bn ||
CURRENT -> sector / 4 > mcd_next_bn + 16)) {
mcd_state = MCD_S_STOP;
goto immediately;
}
McdTimeout = READ_TIMEOUT;
#ifdef DOUBLE_QUICK_ONLY
if (MCMD_DATA_READ != MCMD_PLAY_READ)
#endif
{
int count= QUICK_LOOP_COUNT;
while (count--) {
QUICK_LOOP_DELAY;
if ((st = (inb(MCDPORT(1))) & (MFL_STATUSorDATA)) != (MFL_STATUSorDATA)) {
# ifdef TEST4
/* printk("Quickloop success at %d\n",QUICK_LOOP_COUNT-count); */
printk(" %d ",QUICK_LOOP_COUNT-count);
# endif
goto data_immediately;
}
}
# ifdef TEST4
/* printk("Quickloop ended at %d\n",QUICK_LOOP_COUNT); */
printk("ended ");
# endif
}
break;
}
break;
case MCD_S_STOP:
#ifdef TEST3
printk("MCD_S_STOP\n");
#endif
#ifdef WORK_AROUND_MITSUMI_BUG_93
if (!mitsumi_bug_93_wait)
goto do_not_work_around_mitsumi_bug_93_1;
McdTimeout = mitsumi_bug_93_wait;
mcd_state = 9+3+1;
break;
case 9+3+1:
if (McdTimeout)
break;
do_not_work_around_mitsumi_bug_93_1:
#endif /* WORK_AROUND_MITSUMI_BUG_93 */
outb(MCMD_STOP, MCDPORT(0));
#ifdef WORK_AROUND_MITSUMI_BUG_92
if ((inb(MCDPORT(1)) & MFL_STATUSorDATA) == MFL_STATUS) {
int i = 4096;
do {
inb(MCDPORT(0));
} while ((inb(MCDPORT(1)) & MFL_STATUSorDATA) == MFL_STATUS && --i);
outb(MCMD_STOP, MCDPORT(0));
if ((inb(MCDPORT(1)) & MFL_STATUSorDATA) == MFL_STATUS) {
i = 4096;
do {
inb(MCDPORT(0));
} while ((inb(MCDPORT(1)) & MFL_STATUSorDATA) == MFL_STATUS && --i);
outb(MCMD_STOP, MCDPORT(0));
}
}
#endif /* WORK_AROUND_MITSUMI_BUG_92 */
mcd_state = MCD_S_STOPPING;
McdTimeout = 1000;
break;
case MCD_S_STOPPING:
#ifdef TEST3
printk("MCD_S_STOPPING\n");
#endif
if ((st = mcdStatus()) == -1 && McdTimeout)
break;
if ((st != -1) && (st & MST_DSK_CHG)) {
mcdDiskChanged = 1;
tocUpToDate = 0;
mcd_invalidate_buffers();
}
#ifdef WORK_AROUND_MITSUMI_BUG_93
if (!mitsumi_bug_93_wait)
goto do_not_work_around_mitsumi_bug_93_2;
McdTimeout = mitsumi_bug_93_wait;
mcd_state = 9+3+2;
break;
case 9+3+2:
if (McdTimeout)
break;
st = -1;
do_not_work_around_mitsumi_bug_93_2:
#endif /* WORK_AROUND_MITSUMI_BUG_93 */
#ifdef TEST3
printk("CURRENT_VALID %d mcd_mode %d\n",
CURRENT_VALID, mcd_mode);
#endif
if (CURRENT_VALID) {
if (st != -1) {
if (mcd_mode == 1)
goto read_immediately;
else
goto set_mode_immediately;
} else {
mcd_state = MCD_S_START;
McdTimeout = 1;
}
} else {
mcd_state = MCD_S_IDLE;
return;
}
break;
default:
printk("mcd: invalid state %d\n", mcd_state);
return;
}
ret:
if (!McdTimeout--) {
printk("mcd: timeout in state %d\n", mcd_state);
mcd_state = MCD_S_STOP;
}
SET_TIMER(mcd_poll, 1);
}
/*
* 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(void *arg)
{
struct mcd_softc *sc = arg;
struct mcd_mbx *mbx = &sc->mbx;
struct buf *bp = mbx->bp;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
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;
bus_space_write_1(iot, ioh, MCD_COMMAND, MCD_CMDSETMODE);
bus_space_write_1(iot, ioh, MCD_COMMAND, mbx->mode);
mbx->count = RDELAY_WAITMODE;
mbx->state = MCD_S_WAITMODE;
case MCD_S_WAITMODE:
callout_stop(&sc->sc_pintr_ch);
for (i = 20; i; i--) {
x = bus_space_read_1(iot, ioh, MCD_XFER);
if ((x & MCD_XF_STATUSUNAVAIL) == 0)
break;
delay(50);
}
if (i == 0)
goto hold;
sc->status = bus_space_read_1(iot, ioh, 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);
sc->lastmode = mbx->mode;
firstblock:
MCD_TRACE("doread: read blkno=%d for bp=0x%p\n",
(int) mbx->blkno, bp);
/* Build parameter block. */
hsg2msf(mbx->blkno, msf);
/* Send the read command. */
bus_space_write_1(iot, ioh, MCD_COMMAND, sc->readcmd);
bus_space_write_1(iot, ioh, MCD_COMMAND, msf[0]);
bus_space_write_1(iot, ioh, MCD_COMMAND, msf[1]);
bus_space_write_1(iot, ioh, MCD_COMMAND, msf[2]);
bus_space_write_1(iot, ioh, MCD_COMMAND, 0);
bus_space_write_1(iot, ioh, MCD_COMMAND, 0);
bus_space_write_1(iot, ioh, MCD_COMMAND, mbx->nblk);
mbx->count = RDELAY_WAITREAD;
mbx->state = MCD_S_WAITREAD;
case MCD_S_WAITREAD:
callout_stop(&sc->sc_pintr_ch);
nextblock:
loop:
for (i = 20; i; i--) {
x = bus_space_read_1(iot, ioh, 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 = bus_space_read_1(iot, ioh, MCD_STATUS);
mcd_setflags(sc);
if ((sc->flags & MCDF_LOADED) == 0)
goto changed;
#if 0
printf("%s: got status byte %02x during read\n",
device_xname(sc->sc_dev), (u_int)sc->status);
#endif
goto loop;
gotblock:
MCD_TRACE("doread: got data delay=%d\n",
RDELAY_WAITREAD - mbx->count);
/* Data is ready. */
bus_space_write_1(iot, ioh, MCD_CTL2, 0x04); /* XXX */
bus_space_read_multi_1(iot, ioh, MCD_RDATA,
(char *)bp->b_data + mbx->skip, mbx->sz);
bus_space_write_1(iot, ioh, 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, (bp->b_flags & B_READ));
biodone(bp);
mcdstart(sc);
return 1;
hold:
if (mbx->count-- < 0) {
printf("%s: timeout in state %d",
device_xname(sc->sc_dev), mbx->state);
goto readerr;
}
#if 0
printf("%s: sleep in state %d\n", device_xname(sc->sc_dev),
mbx->state);
#endif
callout_reset(&sc->sc_pintr_ch, hz / 100,
mcd_pseudointr, sc);
return -1;
}
readerr:
if (mbx->retry-- > 0) {
printf("; retrying\n");
goto tryagain;
} else
printf("; giving up\n");
changed:
/* Invalidate the buffer. */
bp->b_error = EIO;
bp->b_resid = bp->b_bcount - mbx->skip;
disk_unbusy(&sc->sc_dk, (bp->b_bcount - bp->b_resid),
(bp->b_flags & B_READ));
biodone(bp);
mcdstart(sc);
return -1;
#ifdef notyet
printf("%s: unit timeout; resetting\n", device_xname(sc->sc_dev));
bus_space_write_1(iot, ioh, 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
}
