BMCR_S100
PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
bmcr = BMCR_S100;
PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX);
{ BMCR_S100|BMCR_FDX, ANAR_CSMA|ANAR_TX_FD,
{ BMCR_S100, ANAR_CSMA|ANAR_T4,
{ BMCR_S100, ANAR_CSMA|ANAR_TX,