DC_PN_MII
CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ |
rval = CSR_READ_4(sc, DC_PN_MII);
CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE |
if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY))