void
dartrint(struct dartsoftc *sc, int port)
{
struct tty *tp;
unsigned char data, sr;
struct dart_info *dart;
bus_addr_t ptaddr;
dart = &sc->sc_dart[port];
ptaddr = port ? DART_B_BASE : DART_A_BASE;
tp = dart->tty;
/* read status reg */
while ((sr = dart_read(sc, ptaddr + DART_SRA)) & RXRDY) {
/* read data and reset receiver */
data = dart_read(sc, ptaddr + DART_RBA);
if ((tp->t_state & (TS_ISOPEN|TS_WOPEN)) == 0 &&
CONS_PORT != port) {
return;
}
if (sr & RBRK) {
/* clear break state */
dart_write(sc, ptaddr + DART_CRA, BRKINTRESET);
DELAY_CR;
dart_write(sc, ptaddr + DART_CRA, ERRRESET);
#if defined(DDB)
if (db_console != 0 && port == CONS_PORT)
Debugger();
#endif
} else {
if (sr & (FRERR|PERR|ROVRN)) { /* errors */
if (sr & ROVRN)
printf("dart0: receiver overrun port %c\n", 'A' + port);
if (sr & FRERR)
printf("dart0: framing error port %c\n", 'A' + port);
if (sr & PERR)
printf("dart0: parity error port %c\n", 'A' + port);
/* clear error state */
dart_write(sc, ptaddr + DART_CRA, ERRRESET);
} else {
/* no errors */
(*linesw[tp->t_line].l_rint)(data,tp);
#if 0
{
if (tp->t_ispeed == B134) /* CS6 */
data &= 077;
else if (tp->t_flags & CS8)
;
else
data &= 0177; /* CS7 */
ttyinput(data, tp);
}
#endif
}
}
}
}
static int
snpwrite(struct dev_write_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct uio *uio = ap->a_uio;
struct snoop *snp;
struct tty *tp;
int error, i, len;
unsigned char c[SNP_INPUT_BUF];
lwkt_gettoken(&tty_token);
snp = dev->si_drv1;
tp = snp->snp_tty;
if (tp == NULL) {
lwkt_reltoken(&tty_token);
return (EIO);
}
if ((tp->t_sc == snp) && (tp->t_state & TS_SNOOP) &&
tp->t_line == snooplinedisc)
goto tty_input;
kprintf("Snoop: attempt to write to bad tty.\n");
lwkt_reltoken(&tty_token);
return (EIO);
tty_input:
if (!(tp->t_state & TS_ISOPEN)) {
lwkt_reltoken(&tty_token);
return (EIO);
}
while (uio->uio_resid > 0) {
len = (int)szmin(uio->uio_resid, SNP_INPUT_BUF);
if ((error = uiomove(c, (size_t)len, uio)) != 0) {
lwkt_reltoken(&tty_token);
return (error);
}
for (i=0; i < len; i++) {
if (ttyinput(c[i], tp)) {
lwkt_reltoken(&tty_token);
return (EIO);
}
}
}
lwkt_reltoken(&tty_token);
return (0);
}
static void rcvISR(int irq, InterruptContext *icp) {
int dev;
struct tty *tp;
struct device *addr;
int c;
/* set process priority, re-enable interrupts */
spl4();
enableInt();
/* process received character */
dev = (irq - 1) / 2;
tp = &terminal[dev];
addr = (struct device *) tp->t_addr;
c = addr->rcvData;
if (c == '^') {
showProcTable(NULL);
return;
}
ttyinput(c, tp);
}
static void com_interrupt( void *_dev )
{
phantom_device_t * dev = _dev;
int unit = dev->seq_number;
int addr = dev->iobase;
com_port_t *cp = dev->drv_private;
(void) unit;
SHOW_FLOW( 9, "com port %d interrupt", unit );
//register struct tty *tp = &com_tty[unit];
//static char comoverrun = 0;
//char c, line, intr_id;
char intr_id;
//int modem_stat;
int line_stat;
while (! ((intr_id=(inb(INTR_ID(addr))&MASKi)) & 1))
{
switch (intr_id) {
case MODi:
/* modem change */
//int ms =
inb(MODEM_STAT(addr));
//commodem_intr(unit, ms));
break;
case TRAi:
hal_sem_release( &(cp->wsem) );
//comtimer_state[unit] = 0;
//tp->t_state &= ~(TS_BUSY|TS_FLUSH);
//tt_write_wakeup(tp);
//(void) comstart(tp);
break;
case RECi:
case CTIi: /* Character timeout indication */
hal_sem_release( &(cp->rsem) );
break;
case LINi:
line_stat = inb(LINE_STAT(addr));
(void) line_stat;
#if 0
if ((line_stat & iPE) &&
((tp->t_flags&(EVENP|ODDP)) == EVENP ||
(tp->t_flags&(EVENP|ODDP)) == ODDP)) {
/* parity error */;
} else if (line&iOR && !comoverrun) {
printf("com%d: overrun\n", unit);
comoverrun = 1;
} else if (line_stat & (iFE | iBRKINTR)) {
/* framing error or break */
ttyinput(tp->t_breakc, tp);
}
#endif
break;
}
}
}
