RCVINT
sc->sc_intmask |= RCVINT | RCVFIFOOF | RCVDESCUF;
if (intstatus & RCVINT) {
intmask &= ~RCVINT;
intmask |= RCVINT;
intmask |= RCVINT;
if (intstatus & RCVINT) {
bcmeth_write_4(sc, GMAC_INTSTATUS, RCVINT);
sc->sc_intmask |= RCVINT | RCVDESCUF | RCVFIFOOF;
if (ir & RCVINT)
if (ir & RCVINT)