int
hil_intr(void *v)
{
struct hil_softc *sc = v;
u_int8_t c, stat;
if (cold)
return (0);
stat = bus_space_read_1(sc->sc_bst, sc->sc_bsh, HILP_STAT);
/*
* This should never happen if the interrupt comes from the
* loop.
*/
if ((stat & HIL_DATA_RDY) == 0)
return (0); /* not for us */
c = bus_space_read_1(sc->sc_bst, sc->sc_bsh,
HILP_DATA); /* clears interrupt */
DELAY(1);
hil_process_int(sc, stat, c);
if (sc->sc_status != HIL_STATUS_BUSY)
hil_process_pending(sc);
return (1);
}
void
hil_set_poll(struct hil_softc *sc, int on)
{
if (on) {
pollon(sc);
} else {
hil_process_pending(sc);
send_hil_cmd(sc, HIL_INTON, NULL, 0, NULL);
}
}
int
hil_intr(void *v)
{
struct hil_softc *sc = v;
u_int8_t c, stat;
if (cold)
return (0);
stat = bus_space_read_1(sc->sc_bst, sc->sc_bsh, HILP_STAT);
c = bus_space_read_1(sc->sc_bst, sc->sc_bsh,
HILP_DATA); /* clears interrupt */
DELAY(1);
hil_process_int(sc, stat, c);
if (sc->sc_status != HIL_STATUS_BUSY)
hil_process_pending(sc);
return (1);
}
void
hil_attach_deferred(void *v)
{
struct hil_softc *sc = v;
int tries;
u_int8_t db;
sc->sc_status = HIL_STATUS_BUSY;
/*
* Initialize the loop: reconfigure, don't report errors,
* put keyboard in cooked mode, and enable autopolling.
*/
db = LPC_RECONF | LPC_KBDCOOK | LPC_NOERROR | LPC_AUTOPOLL;
send_hil_cmd(sc, HIL_WRITELPCTRL, &db, 1, NULL);
/*
* Delay one second for reconfiguration and then read the
* data to clear the interrupt (if the loop reconfigured).
*/
DELAY(1000000);
if (bus_space_read_1(sc->sc_bst, sc->sc_bsh, HILP_STAT) &
HIL_DATA_RDY) {
db = bus_space_read_1(sc->sc_bst, sc->sc_bsh, HILP_DATA);
DELAY(1);
}
/*
* The HIL loop may have reconfigured. If so we proceed on,
* if not we loop a few times until a successful reconfiguration
* is reported back to us. If the HIL loop is still lost after a
* few seconds, give up.
*/
for (tries = 10; tries != 0; tries--) {
if (send_hil_cmd(sc, HIL_READLPSTAT, NULL, 0, &db) == 0) {
if (db & (LPS_CONFFAIL | LPS_CONFGOOD))
break;
}
#ifdef HILDEBUG
printf("%s: loop not ready, retrying...\n",
sc->sc_dev.dv_xname);
#endif
DELAY(1000000);
}
if (tries == 0 || (db & LPS_CONFFAIL)) {
printf("%s: no devices\n", sc->sc_dev.dv_xname);
sc->sc_pending = 0;
if (tries == 0)
return;
}
/*
* Create asynchronous loop event handler thread.
*/
if (kthread_create(hil_thread, sc, &sc->sc_thread,
"%s", sc->sc_dev.dv_xname) != 0) {
printf("%s: unable to create event thread\n",
sc->sc_dev.dv_xname);
return;
}
/*
* Enable loop interrupts.
*/
send_hil_cmd(sc, HIL_INTON, NULL, 0, NULL);
/*
* Reconfigure if necessary
*/
sc->sc_status = HIL_STATUS_READY;
hil_process_pending(sc);
}
