DMAR_CAP_NFR
for (i = 0; i < DMAR_CAP_NFR(unit->hw_cap); i++) {
DMAR_CAP_NFR(unit->hw_cap), DMAR_CAP_SPS(unit->hw_cap));
if (fri >= DMAR_CAP_NFR(unit->hw_cap))
for (i = 0; i < DMAR_CAP_NFR(unit->hw_cap); i++) {