void
ucom_put_data(struct ucom_softc *sc, struct usb_page_cache *pc,
uint32_t offset, uint32_t len)
{
struct usb_page_search res;
struct tty *tp = sc->sc_tty;
char *buf;
uint32_t cnt;
mtx_assert(sc->sc_mtx, MA_OWNED);
if (tty_gone(tp))
return; /* multiport device polling */
if (len == 0)
return; /* no data */
/* set a flag to prevent recursation ? */
while (len > 0) {
usbd_get_page(pc, offset, &res);
if (res.length > len) {
res.length = len;
}
len -= res.length;
offset += res.length;
/* pass characters to tty layer */
buf = res.buffer;
cnt = res.length;
/* first check if we can pass the buffer directly */
if (ttydisc_can_bypass(tp)) {
if (ttydisc_rint_bypass(tp, buf, cnt) != cnt) {
DPRINTF("tp=%p, data lost\n", tp);
}
continue;
}
/* need to loop */
for (cnt = 0; cnt != res.length; cnt++) {
if (ttydisc_rint(tp, buf[cnt], 0) == -1) {
/* XXX what should we do? */
DPRINTF("tp=%p, lost %d "
"chars\n", tp, res.length - cnt);
break;
}
}
}
ttydisc_rint_done(tp);
}
static void
ucom_inwakeup(struct tty *tp)
{
struct ucom_softc *sc = tty_softc(tp);
uint16_t pos;
if (sc == NULL)
return;
UCOM_MTX_ASSERT(sc, MA_OWNED);
DPRINTF("tp=%p\n", tp);
if (ttydisc_can_bypass(tp) != 0 ||
(sc->sc_flag & UCOM_FLAG_HL_READY) == 0 ||
(sc->sc_flag & UCOM_FLAG_INWAKEUP) != 0) {
return;
}
/* prevent recursion */
sc->sc_flag |= UCOM_FLAG_INWAKEUP;
pos = sc->sc_jitterbuf_out;
while (sc->sc_jitterbuf_in != pos) {
int c;
c = (char)sc->sc_jitterbuf[pos];
if (ttydisc_rint(tp, c, 0) == -1)
break;
pos++;
if (pos >= UCOM_JITTERBUF_SIZE)
pos -= UCOM_JITTERBUF_SIZE;
}
sc->sc_jitterbuf_out = pos;
/* clear RTS in async fashion */
if ((sc->sc_jitterbuf_in == pos) &&
(sc->sc_flag & UCOM_FLAG_RTS_IFLOW))
ucom_rts(sc, 0);
sc->sc_flag &= ~UCOM_FLAG_INWAKEUP;
}
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;
mtx_assert(&Giant, MA_OWNED);
DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
/*
* 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;
tty_lock(tp);
/*
* See if a command has completed ?
*/
if (ccbp->hi_stat != pp->sp_pend) {
DPRINT((pp, DBG_INTR,
"si_intr hi_stat = %s, pend = %s\n",
si_cmdname(ccbp->hi_stat),
si_cmdname(pp->sp_pend)));
switch(pp->sp_pend) {
case LOPEN:
case MPEND:
case MOPEN:
case FCLOSE:
case CONFIG:
case SBREAK:
case EBREAK:
/* sleeping in si_command */
DPRINT((pp, DBG_INTR, "do wakeup\n"));
wakeup(&pp->sp_state);
break;
}
pp->sp_pend = ccbp->hi_stat;
}
/*
* Continue on if it's closed
*/
if (ccbp->hi_stat == IDLE_CLOSE) {
tty_unlock(tp);
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.
*/
isopen = tty_opened(tp);
/*
* Do input break processing
*/
if (ccbp->hi_state & ST_BREAK) {
if (isopen)
ttydisc_rint(tp, 0, TRE_BREAK);
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:
if (!isopen) {
DPRINT((pp, DBG_INTR, "intr1: not open\n"));
ccbp->hi_rxopos = ccbp->hi_rxipos;
goto end_rx;
}
#if 0 /* XXXMPSAFETTY */
/*
* 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;
#endif
/*
* 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) {
z = ccbp->hi_rxbuf + op;
si_vbcopy(z, si_rxbuf, n);
op += n;
} else {
x = SI_BUFFERSIZE - op;
z = ccbp->hi_rxbuf + op;
si_vbcopy(z, si_rxbuf, x);
z = ccbp->hi_rxbuf;
si_vbcopy(z, si_rxbuf + x, n - x);
op += n;
}
/* clear collected characters from buffer */
ccbp->hi_rxopos = op;
/*
* at this point...
* n = number of chars placed in si_rxbuf
*/
if (0 && ttydisc_can_bypass(tp)) {
i = ttydisc_rint_bypass(tp, (char *)si_rxbuf, n);
if (i < n)
pp->sp_delta_overflows += (n - i);
} 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 (ttydisc_rint(tp, i, 0) == -1)
pp->sp_delta_overflows++;
}
}
goto more_rx; /* try for more until RXbuf is empty */
end_rx:
ttydisc_rint_done(tp);
/*
* Do TX stuff
*/
si_start(tp);
tty_unlock(tp);
} /* end of for (all ports on this controller) */
} /* end of for (all controllers) */
DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
}
void
ucom_put_data(struct ucom_softc *sc, struct usb_page_cache *pc,
uint32_t offset, uint32_t len)
{
struct usb_page_search res;
struct tty *tp = sc->sc_tty;
char *buf;
uint32_t cnt;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (sc->sc_flag & UCOM_FLAG_CONSOLE) {
unsigned int temp;
/* get maximum RX length */
temp = (UCOM_CONS_BUFSIZE - 1) - ucom_cons_rx_high + ucom_cons_rx_low;
temp %= UCOM_CONS_BUFSIZE;
/* limit RX length */
if (temp > (UCOM_CONS_BUFSIZE - ucom_cons_rx_high))
temp = (UCOM_CONS_BUFSIZE - ucom_cons_rx_high);
if (temp > len)
temp = len;
/* copy out data */
usbd_copy_out(pc, offset, ucom_cons_rx_buf + ucom_cons_rx_high, temp);
/* update counters */
ucom_cons_rx_high += temp;
ucom_cons_rx_high %= UCOM_CONS_BUFSIZE;
return;
}
if (tty_gone(tp))
return; /* multiport device polling */
if (len == 0)
return; /* no data */
/* set a flag to prevent recursation ? */
while (len > 0) {
usbd_get_page(pc, offset, &res);
if (res.length > len) {
res.length = len;
}
len -= res.length;
offset += res.length;
/* pass characters to tty layer */
buf = res.buffer;
cnt = res.length;
/* first check if we can pass the buffer directly */
if (ttydisc_can_bypass(tp)) {
/* clear any jitter buffer */
sc->sc_jitterbuf_in = 0;
sc->sc_jitterbuf_out = 0;
if (ttydisc_rint_bypass(tp, buf, cnt) != cnt) {
DPRINTF("tp=%p, data lost\n", tp);
}
continue;
}
/* need to loop */
for (cnt = 0; cnt != res.length; cnt++) {
if (sc->sc_jitterbuf_in != sc->sc_jitterbuf_out ||
ttydisc_rint(tp, buf[cnt], 0) == -1) {
uint16_t end;
uint16_t pos;
pos = sc->sc_jitterbuf_in;
end = sc->sc_jitterbuf_out +
UCOM_JITTERBUF_SIZE - 1;
if (end >= UCOM_JITTERBUF_SIZE)
end -= UCOM_JITTERBUF_SIZE;
for (; cnt != res.length; cnt++) {
if (pos == end)
break;
sc->sc_jitterbuf[pos] = buf[cnt];
pos++;
if (pos >= UCOM_JITTERBUF_SIZE)
pos -= UCOM_JITTERBUF_SIZE;
}
sc->sc_jitterbuf_in = pos;
/* set RTS in async fashion */
if (sc->sc_flag & UCOM_FLAG_RTS_IFLOW)
ucom_rts(sc, 1);
DPRINTF("tp=%p, lost %d "
"chars\n", tp, res.length - cnt);
break;
}
}
}
ttydisc_rint_done(tp);
}
