dmar_read8
unit, dmar_read8(unit, DMAR_RTADDR_REG),
(uintmax_t)dmar_read8(unit, DMAR_CAP_REG),
(uintmax_t)dmar_read8(unit, DMAR_ECAP_REG),
(uintmax_t)dmar_read8(unit, frir),
(uintmax_t)dmar_read8(unit, frir + 8));
(uintmax_t)dmar_read8(unit, DMAR_IQA_REG),
unit->hw_cap = dmar_read8(unit, DMAR_CAP_REG);
unit->hw_ecap = dmar_read8(unit, DMAR_ECAP_REG);
fault_rec[1] = dmar_read8(unit, frir + 8);
fault_rec[0] = dmar_read8(unit, frir);
iotlbr = dmar_read8(unit, iro + DMAR_IOTLB_REG_OFF);