Static void
ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
{
struct ucom_softc *sc = (struct ucom_softc *)p;
struct tty *tp = sc->sc_tty;
int (*rint) (int c, struct tty *tp) = linesw[tp->t_line].l_rint;
usbd_status err;
u_int32_t cc;
u_char *cp;
int lostcc;
int s;
DPRINTF(("ucomreadcb: status = %d\n", status));
if (status != USBD_NORMAL_COMPLETION) {
if (!(sc->sc_state & UCS_RXSTOP))
printf("%s: ucomreadcb: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
/* XXX we should restart after some delay. */
return;
}
usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL);
DPRINTF(("ucomreadcb: got %d chars, tp = %p\n", cc, tp));
if (cc == 0)
goto resubmit;
if (sc->sc_callback->ucom_read != NULL)
sc->sc_callback->ucom_read(sc->sc_parent, sc->sc_portno,
&cp, &cc);
if (cc > sc->sc_ibufsize) {
printf("%s: invalid receive data size, %d chars\n",
USBDEVNAME(sc->sc_dev), cc);
goto resubmit;
}
if (cc < 1)
goto resubmit;
s = spltty();
if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
if (tp->t_rawq.c_cc + cc > tp->t_ihiwat
&& (sc->sc_state & UCS_RTS_IFLOW
|| tp->t_iflag & IXOFF)
&& !(tp->t_state & TS_TBLOCK))
ttyblock(tp);
lostcc = b_to_q((char *)cp, cc, &tp->t_rawq);
tp->t_rawcc += cc;
ttwakeup(tp);
if (tp->t_state & TS_TTSTOP
&& (tp->t_iflag & IXANY
|| tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
tp->t_state &= ~TS_TTSTOP;
tp->t_lflag &= ~FLUSHO;
ucomstart(tp);
}
if (lostcc > 0)
printf("%s: lost %d chars\n", USBDEVNAME(sc->sc_dev),
lostcc);
} else {
/* Give characters to tty layer. */
while (cc > 0) {
DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp));
if ((*rint)(*cp, tp) == -1) {
/* XXX what should we do? */
printf("%s: lost %d chars\n",
USBDEVNAME(sc->sc_dev), cc);
break;
}
cc--;
cp++;
}
}
splx(s);
resubmit:
err = ucomstartread(sc);
if (err) {
printf("%s: read start failed\n", USBDEVNAME(sc->sc_dev));
/* XXX what should we dow now? */
}
if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, UMCR_RTS)
&& !(tp->t_state & TS_TBLOCK))
ucomctl(sc, UMCR_RTS, DMBIS);
}
void
si_intr(void *arg)
{
struct si_softc *sc;
struct si_port *pp;
volatile struct si_channel *ccbp;
struct tty *tp;
volatile caddr_t maddr;
BYTE op, ip;
int x, card, port, n, i, isopen;
volatile BYTE *z;
BYTE c;
sc = arg;
DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
if (in_intr)
return;
in_intr = 1;
/*
* When we get an int we poll all the channels and do ALL pending
* work, not just the first one we find. This allows all cards to
* share the same vector.
*
* XXX - But if we're sharing the vector with something that's NOT
* a SI/XIO/SX card, we may be making more work for ourselves.
*/
for (card = 0; card < si_numunits; card++) {
sc = devclass_get_softc(si_devclass, card);
if (sc == NULL || sc->sc_type == SIEMPTY)
continue;
/*
* First, clear the interrupt
*/
switch(sc->sc_type) {
case SIHOST:
maddr = sc->sc_maddr;
((volatile struct si_reg *)maddr)->int_pending = 0;
/* flag nothing pending */
*(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
*(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
break;
case SIHOST2:
maddr = sc->sc_maddr;
((volatile struct si_reg *)maddr)->int_pending = 0;
*(maddr+SIPLIRQCLR) = 0x00;
*(maddr+SIPLIRQCLR) = 0x10;
break;
case SIPCI:
maddr = sc->sc_maddr;
((volatile struct si_reg *)maddr)->int_pending = 0;
*(maddr+SIPCIINTCL) = 0x0;
break;
case SIJETPCI: /* fall through to JETISA case */
case SIJETISA:
maddr = sc->sc_maddr;
((volatile struct si_reg *)maddr)->int_pending = 0;
*(maddr+SIJETINTCL) = 0x0;
break;
#ifdef DEV_EISA
case SIEISA:
maddr = sc->sc_maddr;
((volatile struct si_reg *)maddr)->int_pending = 0;
(void)inb(sc->sc_iobase + 3);
break;
#endif
case SIEMPTY:
default:
continue;
}
((volatile struct si_reg *)maddr)->int_scounter = 0;
/*
* check each port
*/
for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
pp++, port++) {
ccbp = pp->sp_ccb;
tp = pp->sp_tty;
/*
* See if a command has completed ?
*/
if (ccbp->hi_stat != pp->sp_pend) {
DPRINT((pp, DBG_INTR,
"si_intr hi_stat = 0x%x, pend = %d\n",
ccbp->hi_stat, pp->sp_pend));
switch(pp->sp_pend) {
case LOPEN:
case MPEND:
case MOPEN:
case CONFIG:
case SBREAK:
case EBREAK:
pp->sp_pend = ccbp->hi_stat;
/* sleeping in si_command */
wakeup(&pp->sp_state);
break;
default:
pp->sp_pend = ccbp->hi_stat;
}
}
/*
* Continue on if it's closed
*/
if (ccbp->hi_stat == IDLE_CLOSE) {
continue;
}
/*
* Do modem state change if not a local device
*/
si_modem_state(pp, tp, ccbp->hi_ip);
/*
* Check to see if we should 'receive' characters.
*/
if (tp->t_state & TS_CONNECTED &&
tp->t_state & TS_ISOPEN)
isopen = 1;
else
isopen = 0;
/*
* Do input break processing
*/
if (ccbp->hi_state & ST_BREAK) {
if (isopen) {
ttyld_rint(tp, TTY_BI);
}
ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
DPRINT((pp, DBG_INTR, "si_intr break\n"));
}
/*
* Do RX stuff - if not open then dump any characters.
* XXX: This is VERY messy and needs to be cleaned up.
*
* XXX: can we leave data in the host adapter buffer
* when the clists are full? That may be dangerous
* if the user cannot get an interrupt signal through.
*/
more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
if (!isopen) {
ccbp->hi_rxopos = ccbp->hi_rxipos;
goto end_rx;
}
/*
* If the tty input buffers are blocked, stop emptying
* the incoming buffers and let the auto flow control
* assert..
*/
if (tp->t_state & TS_TBLOCK) {
goto end_rx;
}
/*
* Process read characters if not skipped above
*/
op = ccbp->hi_rxopos;
ip = ccbp->hi_rxipos;
c = ip - op;
if (c == 0) {
goto end_rx;
}
n = c & 0xff;
if (n > 250)
n = 250;
DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
n, op, ip));
/*
* Suck characters out of host card buffer into the
* "input staging buffer" - so that we dont leave the
* host card in limbo while we're possibly echoing
* characters and possibly flushing input inside the
* ldisc l_rint() routine.
*/
if (n <= SI_BUFFERSIZE - op) {
DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
z = ccbp->hi_rxbuf + op;
si_vbcopy(z, si_rxbuf, n);
op += n;
} else {
x = SI_BUFFERSIZE - op;
DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
z = ccbp->hi_rxbuf + op;
si_vbcopy(z, si_rxbuf, x);
DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
n - x));
z = ccbp->hi_rxbuf;
si_vbcopy(z, si_rxbuf + x, n - x);
op += n;
}
/* clear collected characters from buffer */
ccbp->hi_rxopos = op;
DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
n, op, ip));
/*
* at this point...
* n = number of chars placed in si_rxbuf
*/
/*
* Avoid the grotesquely inefficient lineswitch
* routine (ttyinput) in "raw" mode. It usually
* takes about 450 instructions (that's without
* canonical processing or echo!). slinput is
* reasonably fast (usually 40 instructions
* plus call overhead).
*/
if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
/* block if the driver supports it */
if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
(tp->t_cflag & CRTS_IFLOW ||
tp->t_iflag & IXOFF) &&
!(tp->t_state & TS_TBLOCK))
ttyblock(tp);
tk_nin += n;
tk_rawcc += n;
tp->t_rawcc += n;
pp->sp_delta_overflows +=
b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
ttwakeup(tp);
if (tp->t_state & TS_TTSTOP &&
(tp->t_iflag & IXANY ||
tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
tp->t_state &= ~TS_TTSTOP;
tp->t_lflag &= ~FLUSHO;
si_start(tp);
}
} else {
/*
* It'd be nice to not have to go through the
* function call overhead for each char here.
* It'd be nice to block input it, saving a
* loop here and the call/return overhead.
*/
for(x = 0; x < n; x++) {
i = si_rxbuf[x];
if (ttyld_rint(tp, i)
== -1) {
pp->sp_delta_overflows++;
}
}
}
goto more_rx; /* try for more until RXbuf is empty */
end_rx: /* XXX: Again, sorry about the gotos.. :-) */
/*
* Do TX stuff
*/
ttyld_start(tp);
} /* end of for (all ports on this controller) */
} /* end of for (all controllers) */
in_intr = 0;
DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
}