Symbol: E1000_TCTL
sys/dev/pci/if_em.c
3488
tctl = EM_READ_REG(&sc->hw, E1000_TCTL);
sys/dev/pci/if_em.c
3489
EM_WRITE_REG(&sc->hw, E1000_TCTL, tctl | E1000_TCTL_EN);