PHY_AUTONEG_ADV
em_read_phy_reg(&sc->hw, PHY_AUTONEG_ADV, &ar);
ret_val = em_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
ret_val = em_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
ret_val = em_read_phy_reg(hw, PHY_AUTONEG_ADV,
ret_val = hw->phy.ops.read_reg(hw, PHY_AUTONEG_ADV,
ret_val = phy->ops.read_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
ret_val = phy->ops.write_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);