DMAR_GCMD_TE
if (enable && !rmrr_init && (dmar->hw_gcmd & DMAR_GCMD_TE) == 0) {
KASSERT(reg != DMAR_GCMD_REG || (val & DMAR_GCMD_TE) ==
(unit->hw_gcmd & DMAR_GCMD_TE),
KASSERT((dmar->hw_gcmd & DMAR_GCMD_TE) == 0,
unit->hw_gcmd |= DMAR_GCMD_TE;
unit->hw_gcmd &= ~DMAR_GCMD_TE;