arm_smmu_gr0_read
reg = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_ID7);
reg = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sACR);
reg = arm_smmu_gr0_read(smmu, last_s2cr);
smr = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_SMR(i));
smr = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_SMR(i));
smr = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_SMR(i));
reg = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sGFSR);
reg = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sCR0);
id = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_ID0);
id = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_ID1);
id = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_ID2);
reg = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sCR0);
gfsr = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sGFSR);
gfsynr0 = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sGFSYNR0);
gfsynr1 = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sGFSYNR1);
gfsynr2 = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sGFSYNR2);