arm64/sysreg: Standardise naming of ID_AA64MMFR0_EL1.ASIDBits

For some reason we refer to ID_AA64MMFR0_EL1.ASIDBits as ASID. Add BITS
into the name, bringing the naming into sync with DDI0487H.a. Due to the
large amount of MixedCase in this register which isn't really consistent
with either the kernel style or the majority of the architecture the use of
upper case is preserved. No functional changes.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kristina Martsenko <kristina.martsenko@arm.com>
Link: https://lore.kernel.org/r/20220905225425.1871461-10-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index f1430c7..b6cd999 100644 (file)
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -745,11 +745,11 @@
 #define ID_AA64MMFR0_EL1_BIGENDEL0_SHIFT       16
 #define ID_AA64MMFR0_EL1_SNSMEM_SHIFT          12
 #define ID_AA64MMFR0_EL1_BIGEND_SHIFT          8
-#define ID_AA64MMFR0_EL1_ASID_SHIFT            4
+#define ID_AA64MMFR0_EL1_ASIDBITS_SHIFT                4
 #define ID_AA64MMFR0_EL1_PARANGE_SHIFT         0
 
-#define ID_AA64MMFR0_EL1_ASID_8                        0x0
-#define ID_AA64MMFR0_EL1_ASID_16               0x2
+#define ID_AA64MMFR0_EL1_ASIDBITS_8            0x0
+#define ID_AA64MMFR0_EL1_ASIDBITS_16           0x2
 
 #define ID_AA64MMFR0_EL1_TGRAN4_NI             0xf
 #define ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN  0x0

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index def0358..ba44f67 100644 (file)
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -352,7 +352,7 @@ static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
        /* Linux shouldn't care about secure memory */
        ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_SNSMEM_SHIFT, 4, 0),
        ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_BIGEND_SHIFT, 4, 0),
-       ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_ASID_SHIFT, 4, 0),
+       ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_EL1_ASIDBITS_SHIFT, 4, 0),
        /*
         * Differing PARange is fine as long as all peripherals and memory are mapped
         * within the minimum PARange of all CPUs

diff --git a/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h b/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
index 0ece267..0c2e474 100644 (file)
--- a/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/fixed_config.h
@@ -87,7 +87,7 @@
  */
 #define PVM_ID_AA64MMFR0_RESTRICT_UNSIGNED (\
        FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_PARANGE), ID_AA64MMFR0_EL1_PARANGE_40) | \
-       FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_ASID), ID_AA64MMFR0_EL1_ASID_16) \
+       FIELD_PREP(ARM64_FEATURE_MASK(ID_AA64MMFR0_EL1_ASIDBITS), ID_AA64MMFR0_EL1_ASIDBITS_16) \
        )
 
 /*

diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c
index 8f38a54..e1e0dca 100644 (file)
--- a/arch/arm64/mm/context.c
+++ b/arch/arm64/mm/context.c
@@ -43,17 +43,17 @@ static u32 get_cpu_asid_bits(void)
 {
        u32 asid;
        int fld = cpuid_feature_extract_unsigned_field(read_cpuid(ID_AA64MMFR0_EL1),
-                                               ID_AA64MMFR0_EL1_ASID_SHIFT);
+                                               ID_AA64MMFR0_EL1_ASIDBITS_SHIFT);
 
        switch (fld) {
        default:
                pr_warn("CPU%d: Unknown ASID size (%d); assuming 8-bit\n",
                                        smp_processor_id(),  fld);
                fallthrough;
-       case ID_AA64MMFR0_EL1_ASID_8:
+       case ID_AA64MMFR0_EL1_ASIDBITS_8:
                asid = 8;
                break;
-       case ID_AA64MMFR0_EL1_ASID_16:
+       case ID_AA64MMFR0_EL1_ASIDBITS_16:
                asid = 16;
        }
 

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
index da67a75..5968a56 100644 (file)
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
@@ -431,7 +431,7 @@ bool arm_smmu_sva_supported(struct arm_smmu_device *smmu)
                return false;
 
        /* We can support bigger ASIDs than the CPU, but not smaller */
-       fld = cpuid_feature_extract_unsigned_field(reg, ID_AA64MMFR0_EL1_ASID_SHIFT);
+       fld = cpuid_feature_extract_unsigned_field(reg, ID_AA64MMFR0_EL1_ASIDBITS_SHIFT);
        asid_bits = fld ? 16 : 8;
        if (smmu->asid_bits < asid_bits)
                return false;