static int
s3c2410_getc(struct uart_bas *bas, struct mtx *mtx)
{
while (!sscom_rxrdy(bas->bst, bas->bsh))
continue;
return sscom_getc(bas->bst, bas->bsh);
}
int
getchar(void)
{
uint8_t stat;
int c;
while (!sscom_rxrdy())
/* spin */ ;
c = INB(SSCOM_URXH);
stat = INB(SSCOM_UERSTAT); /* XXX */
return c;
}
/*
* Console kernel output character routine.
*/
void
sscomcnputc(dev_t dev, int c)
{
int s = splserial();
int timo;
int cin;
int __attribute__((__unused__)) stat;
if (sscom_readaheadcount < MAX_READAHEAD &&
sscom_rxrdy(sscomconstag, sscomconsioh)) {
int __attribute__((__unused__))cn_trapped = 0;
cin = sscom_getc(sscomconstag, sscomconsioh);
stat = sscom_geterr(sscomconstag, sscomconsioh);
cn_check_magic(dev, cin, sscom_cnm_state);
sscom_readahead[sscom_readaheadcount++] = cin;
}
static void
sscom_iflush(struct sscom_softc *sc)
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
int timo;
timo = 50000;
/* flush any pending I/O */
while ( sscom_rxrdy(iot, ioh) && --timo)
(void)sscom_getc(iot,ioh);
#ifdef DIAGNOSTIC
if (!timo)
printf("%s: sscom_iflush timeout\n", device_xname(sc->sc_dev));
#endif
}
int
sscomcngetc(dev_t dev)
{
int s = splserial();
u_char __attribute__((__unused__)) stat;
u_char c;
/* got a character from reading things earlier */
if (sscom_readaheadcount > 0) {
int i;
c = sscom_readahead[0];
for (i = 1; i < sscom_readaheadcount; i++) {
sscom_readahead[i-1] = sscom_readahead[i];
}
sscom_readaheadcount--;
splx(s);
return c;
}
/* block until a character becomes available */
while (!sscom_rxrdy(sscomconstag, sscomconsioh))
;
c = sscom_getc(sscomconstag, sscomconsioh);
stat = sscom_geterr(sscomconstag, sscomconsioh);
{
int __attribute__((__unused__))cn_trapped = 0;
#ifdef DDB
extern int db_active;
if (!db_active)
#endif
cn_check_magic(dev, c, sscom_cnm_state);
}
splx(s);
return c;
}
