E1000_CTRL_MDC   3276 dev/pci/if_em_hw.c     E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC));
E1000_CTRL_MDC   3294 dev/pci/if_em_hw.c     E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC));