dmar_qi_emit
dmar_qi_emit(unit, DMAR_IQ_DESCR_WAIT_ID |
dmar_qi_emit(unit, DMAR_IQ_DESCR_IOTLB_INV |
dmar_qi_emit(unit, data1, 0);
dmar_qi_emit(unit, DMAR_IQ_DESCR_IEC_INV |