MUE_MII_ACCESS
if (!(mue_csr_read(sc, MUE_MII_ACCESS) & MUE_MII_ACCESS_BUSY))
mue_csr_write(sc, MUE_MII_ACCESS, MUE_MII_ACCESS_READ |
mue_csr_write(sc, MUE_MII_ACCESS, MUE_MII_ACCESS_WRITE |