SMMU_SMR
smmu_gr0_read_4(sc, SMMU_SMR(i)) & SMMU_SMR_VALID) {
reg = smmu_gr0_read_4(sc, SMMU_SMR(i));
smmu_gr0_write_4(sc, SMMU_SMR(i), 0);
smmu_gr0_write_4(sc, SMMU_SMR(dom->sd_smr_idx), reg);