/* Return zero on success. */
static __inline void oak_wait_not_req(struct ncr5380_softc *sc)
{
int timo;
for (timo = TIMEOUT; timo; timo--) {
if ((NCR5380_READ(sc, sci_bus_csr) & SCI_BUS_REQ) == 0 ||
(NCR5380_READ(sc, sci_csr) & SCI_CSR_PHASE_MATCH) == 0 ||
SCI_BUSY(sc) == 0) {
return;
}
}
printf("%s: pdma not_req timeout\n", sc->sc_dev.dv_xname);
}
/* Return zero on success. */
static inline int
sbc_wait_busy(struct ncr5380_softc *sc)
{
int timo = sbc_wait_busy_timo;
for (;;) {
if (SCI_BUSY(sc)) {
timo = 0; /* return 0 */
break;
}
if (--timo < 0)
break; /* return -1 */
delay(2);
}
return (timo);
}
static inline int
hcsc_ready(struct ncr5380_softc *sc)
{
int i;
for (i = TIMEOUT; i > 0; i--) {
if ((NCR5380_READ(sc,sci_csr) &
(SCI_CSR_DREQ | SCI_CSR_PHASE_MATCH)) ==
(SCI_CSR_DREQ | SCI_CSR_PHASE_MATCH))
return 1;
if ((NCR5380_READ(sc, sci_csr) & SCI_CSR_PHASE_MATCH) == 0 ||
SCI_BUSY(sc) == 0)
return 0;
}
printf("%s: ready timeout\n", device_xname(sc->sc_dev));
return 0;
}
static inline int
sbc_ready(struct ncr5380_softc *sc)
{
int timo = sbc_ready_timo;
for (;;) {
if ((*sc->sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH))
== (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
timo = 0;
break;
}
if (((*sc->sci_csr & SCI_CSR_PHASE_MATCH) == 0)
|| (SCI_BUSY(sc) == 0)) {
timo = -1;
break;
}
if (--timo < 0)
break; /* return -1 */
delay(2);
}
return (timo);
}
static __inline int
oak_ready(struct ncr5380_softc *sc)
{
int i;
int status;
for (i = TIMEOUT; i > 0; i--) {
status = NCR5380_READ(sc, sci_csr);
if ((status & (SCI_CSR_DREQ | SCI_CSR_PHASE_MATCH)) ==
(SCI_CSR_DREQ | SCI_CSR_PHASE_MATCH))
return(1);
if ((status & SCI_CSR_PHASE_MATCH) == 0 ||
SCI_BUSY(sc) == 0)
return(0);
}
printf("%s: ready timeout\n", sc->sc_dev.dv_xname);
return(0);
#if 0 /* The Linux driver does this: */
struct oak_softc *sc = (void *)ncr_sc;
bus_space_tag_t pdmat = sc->sc_pdmat;
bus_space_handle_t pdmah = sc->sc_pdmah;
int i, status;
for (i = TIMEOUT; i > 0; i--) {
status = bus_space_read_2(pdmat, pdmah, OAK_PDMA_STATUS);
if (status & 0x200)
return(0);
if (status & 0x100)
return(1);
}
printf("%s: ready timeout, status = 0x%x\n", ncr_sc->sc_dev.dv_xname,
status);
return(0);
#endif
}