E1000_MPHY_ADDRESS_MASK
mphy_ctrl = (mphy_ctrl & ~E1000_MPHY_ADDRESS_MASK &
(address & E1000_MPHY_ADDRESS_MASK);
mphy_ctrl = (mphy_ctrl & ~E1000_MPHY_ADDRESS_MASK) |
(address & E1000_MPHY_ADDRESS_MASK);