FLOW_CONTROL_ADDRESS_LOW
E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW);
E1000_WRITE_REG(hw, E1000_FCAL, FLOW_CONTROL_ADDRESS_LOW);
E1000_WRITE_REG(hw, E1000_FCAL, FLOW_CONTROL_ADDRESS_LOW);
IGC_WRITE_REG(hw, IGC_FCAL, FLOW_CONTROL_ADDRESS_LOW);