ARM_SMMU_GR0_sGFSYNR1
case ARM_SMMU_GR0_sGFSYNR1:
gfsynr1 = readl_relaxed(gr0_base + ARM_SMMU_GR0_sGFSYNR1);
gfsynr1 = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_sGFSYNR1);