void cmdSonicRead(void)
{
char out[128];
unsigned int sonic_val;
//myStringPut("cmdSonicRead() called");
sonic_val=sonic_read();
myStringPut("sonic_val=");
ltoa( (long) sonic_val,out);
myStringPut(out);
myStringPut(", ");
ltoa( (long) (sonic_val/50000),out);
myStringPut(out);
myStringPut(" [ms]");
myNLPut();
}
/*
* Receive interrupt routine
*/
static void
sonicrxint(struct sn_softc *sc)
{
void * rda;
int orra;
int len;
int rramark;
int rdamark;
uint16_t rxpkt_ptr;
rda = (char *)sc->p_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
while (SRO(bitmode, rda, RXPKT_INUSE) == 0) {
u_int status = SRO(bitmode, rda, RXPKT_STATUS);
orra = RBASEQ(SRO(bitmode, rda, RXPKT_SEQNO)) & RRAMASK;
rxpkt_ptr = SRO(bitmode, rda, RXPKT_PTRLO);
len = SRO(bitmode, rda, RXPKT_BYTEC) - FCSSIZE;
if (status & RCR_PRX) {
void *pkt =
(char *)sc->rbuf[orra & RBAMASK] +
(rxpkt_ptr & PGOFSET);
if (sonic_read(sc, pkt, len))
sc->sc_if.if_ipackets++;
else
sc->sc_if.if_ierrors++;
} else
sc->sc_if.if_ierrors++;
/*
* give receive buffer area back to chip.
*
* If this was the last packet in the RRA, give the RRA to
* the chip again.
* If sonic read didnt copy it out then we would have to
* wait !!
* (dont bother add it back in again straight away)
*
* Really, we're doing p_rra[rramark] = p_rra[orra] but
* we have to use the macros because SONIC might be in
* 16 or 32 bit mode.
*/
if (status & RCR_LPKT) {
void *tmp1, *tmp2;
rramark = sc->sc_rramark;
tmp1 = sc->p_rra[rramark];
tmp2 = sc->p_rra[orra];
SWO(bitmode, tmp1, RXRSRC_PTRLO,
SRO(bitmode, tmp2, RXRSRC_PTRLO));
SWO(bitmode, tmp1, RXRSRC_PTRHI,
SRO(bitmode, tmp2, RXRSRC_PTRHI));
SWO(bitmode, tmp1, RXRSRC_WCLO,
SRO(bitmode, tmp2, RXRSRC_WCLO));
SWO(bitmode, tmp1, RXRSRC_WCHI,
SRO(bitmode, tmp2, RXRSRC_WCHI));
/* zap old rra for fun */
SWO(bitmode, tmp2, RXRSRC_WCHI, 0);
SWO(bitmode, tmp2, RXRSRC_WCLO, 0);
sc->sc_rramark = (++rramark) & RRAMASK;
NIC_PUT(sc, SNR_RWP, LOWER(sc->v_rra[rramark]));
wbflush();
}
/*
* give receive descriptor back to chip simple
* list is circular
*/
rdamark = sc->sc_rdamark;
SWO(bitmode, rda, RXPKT_INUSE, 1);
SWO(bitmode, rda, RXPKT_RLINK,
SRO(bitmode, rda, RXPKT_RLINK) | EOL);
SWO(bitmode, ((char *)sc->p_rda + (rdamark * RXPKT_SIZE(sc))),
RXPKT_RLINK,
SRO(bitmode, ((char *)sc->p_rda +
(rdamark * RXPKT_SIZE(sc))),
RXPKT_RLINK) & ~EOL);
sc->sc_rdamark = sc->sc_rxmark;
if (++sc->sc_rxmark >= sc->sc_nrda)
sc->sc_rxmark = 0;
rda = (char *)sc->p_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
}
}