forked from Minki/linux
arm64: cpufeature: Track user visible fields
Track the user visible fields of a CPU feature register. This will be used for exposing the value to the userspace. All the user visible fields of a feature register will be passed on as it is, while the others would be filled with their respective safe value. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
parent
8c2dcbd2c4
commit
fe4fbdbcdd
arch/arm64
@ -55,8 +55,12 @@ enum ftr_type {
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#define FTR_SIGNED true /* Value should be treated as signed */
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#define FTR_SIGNED true /* Value should be treated as signed */
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#define FTR_UNSIGNED false /* Value should be treated as unsigned */
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#define FTR_UNSIGNED false /* Value should be treated as unsigned */
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#define FTR_VISIBLE true /* Feature visible to the user space */
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#define FTR_HIDDEN false /* Feature is hidden from the user */
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struct arm64_ftr_bits {
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struct arm64_ftr_bits {
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bool sign; /* Value is signed ? */
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bool sign; /* Value is signed ? */
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bool visible;
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bool strict; /* CPU Sanity check: strict matching required ? */
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bool strict; /* CPU Sanity check: strict matching required ? */
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enum ftr_type type;
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enum ftr_type type;
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u8 shift;
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u8 shift;
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@ -72,7 +76,9 @@ struct arm64_ftr_bits {
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struct arm64_ftr_reg {
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struct arm64_ftr_reg {
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const char *name;
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const char *name;
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u64 strict_mask;
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u64 strict_mask;
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u64 user_mask;
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u64 sys_val;
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u64 sys_val;
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u64 user_val;
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const struct arm64_ftr_bits *ftr_bits;
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const struct arm64_ftr_bits *ftr_bits;
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};
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};
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@ -172,6 +178,11 @@ static inline u64 arm64_ftr_mask(const struct arm64_ftr_bits *ftrp)
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return (u64)GENMASK(ftrp->shift + ftrp->width - 1, ftrp->shift);
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return (u64)GENMASK(ftrp->shift + ftrp->width - 1, ftrp->shift);
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}
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}
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static inline u64 arm64_ftr_reg_user_value(const struct arm64_ftr_reg *reg)
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{
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return (reg->user_val | (reg->sys_val & reg->user_mask));
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}
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static inline int __attribute_const__
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static inline int __attribute_const__
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cpuid_feature_extract_field(u64 features, int field, bool sign)
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cpuid_feature_extract_field(u64 features, int field, bool sign)
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{
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{
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@ -52,9 +52,10 @@ EXPORT_SYMBOL(cpu_hwcaps);
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DEFINE_STATIC_KEY_ARRAY_FALSE(cpu_hwcap_keys, ARM64_NCAPS);
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DEFINE_STATIC_KEY_ARRAY_FALSE(cpu_hwcap_keys, ARM64_NCAPS);
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EXPORT_SYMBOL(cpu_hwcap_keys);
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EXPORT_SYMBOL(cpu_hwcap_keys);
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#define __ARM64_FTR_BITS(SIGNED, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL) \
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#define __ARM64_FTR_BITS(SIGNED, VISIBLE, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL) \
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{ \
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{ \
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.sign = SIGNED, \
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.sign = SIGNED, \
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.visible = VISIBLE, \
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.strict = STRICT, \
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.strict = STRICT, \
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.type = TYPE, \
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.type = TYPE, \
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.shift = SHIFT, \
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.shift = SHIFT, \
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@ -63,12 +64,12 @@ EXPORT_SYMBOL(cpu_hwcap_keys);
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}
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}
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/* Define a feature with unsigned values */
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/* Define a feature with unsigned values */
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#define ARM64_FTR_BITS(STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL) \
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#define ARM64_FTR_BITS(VISIBLE, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL) \
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__ARM64_FTR_BITS(FTR_UNSIGNED, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL)
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__ARM64_FTR_BITS(FTR_UNSIGNED, VISIBLE, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL)
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/* Define a feature with a signed value */
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/* Define a feature with a signed value */
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#define S_ARM64_FTR_BITS(STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL) \
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#define S_ARM64_FTR_BITS(VISIBLE, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL) \
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__ARM64_FTR_BITS(FTR_SIGNED, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL)
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__ARM64_FTR_BITS(FTR_SIGNED, VISIBLE, STRICT, TYPE, SHIFT, WIDTH, SAFE_VAL)
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#define ARM64_FTR_END \
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#define ARM64_FTR_END \
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{ \
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{ \
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@ -81,75 +82,75 @@ cpufeature_pan_not_uao(const struct arm64_cpu_capabilities *entry, int __unused)
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static const struct arm64_ftr_bits ftr_id_aa64isar0[] = {
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static const struct arm64_ftr_bits ftr_id_aa64isar0[] = {
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64ISAR0_RDM_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, ID_AA64ISAR0_RDM_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_ATOMICS_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_ATOMICS_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_CRC32_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_CRC32_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SHA2_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SHA2_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SHA1_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_SHA1_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_AES_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_AES_SHIFT, 4, 0),
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ARM64_FTR_END,
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ARM64_FTR_END,
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};
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};
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static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = {
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static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = {
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64PFR0_GIC_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_GIC_SHIFT, 4, 0),
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S_ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_ASIMD_SHIFT, 4, ID_AA64PFR0_ASIMD_NI),
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S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_ASIMD_SHIFT, 4, ID_AA64PFR0_ASIMD_NI),
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S_ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_FP_SHIFT, 4, ID_AA64PFR0_FP_NI),
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S_ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR0_FP_SHIFT, 4, ID_AA64PFR0_FP_NI),
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/* Linux doesn't care about the EL3 */
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/* Linux doesn't care about the EL3 */
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ARM64_FTR_BITS(FTR_NONSTRICT, FTR_EXACT, ID_AA64PFR0_EL3_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64PFR0_EL3_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL2_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL2_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL1_SHIFT, 4, ID_AA64PFR0_EL1_64BIT_ONLY),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL1_SHIFT, 4, ID_AA64PFR0_EL1_64BIT_ONLY),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL0_SHIFT, 4, ID_AA64PFR0_EL0_64BIT_ONLY),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64PFR0_EL0_SHIFT, 4, ID_AA64PFR0_EL0_64BIT_ONLY),
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ARM64_FTR_END,
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ARM64_FTR_END,
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};
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};
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static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
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static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
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S_ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN4_SHIFT, 4, ID_AA64MMFR0_TGRAN4_NI),
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S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN4_SHIFT, 4, ID_AA64MMFR0_TGRAN4_NI),
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S_ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN64_SHIFT, 4, ID_AA64MMFR0_TGRAN64_NI),
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S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN64_SHIFT, 4, ID_AA64MMFR0_TGRAN64_NI),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN16_SHIFT, 4, ID_AA64MMFR0_TGRAN16_NI),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_TGRAN16_SHIFT, 4, ID_AA64MMFR0_TGRAN16_NI),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_BIGENDEL0_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_BIGENDEL0_SHIFT, 4, 0),
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/* Linux shouldn't care about secure memory */
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/* Linux shouldn't care about secure memory */
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ARM64_FTR_BITS(FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_SNSMEM_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64MMFR0_SNSMEM_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_BIGENDEL_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_BIGENDEL_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_ASID_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR0_ASID_SHIFT, 4, 0),
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/*
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/*
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* Differing PARange is fine as long as all peripherals and memory are mapped
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* Differing PARange is fine as long as all peripherals and memory are mapped
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* within the minimum PARange of all CPUs
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* within the minimum PARange of all CPUs
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*/
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*/
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ARM64_FTR_BITS(FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_PARANGE_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_PARANGE_SHIFT, 4, 0),
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ARM64_FTR_END,
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ARM64_FTR_END,
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};
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};
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static const struct arm64_ftr_bits ftr_id_aa64mmfr1[] = {
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static const struct arm64_ftr_bits ftr_id_aa64mmfr1[] = {
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_PAN_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_PAN_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_LOR_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_LOR_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_HPD_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_HPD_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_VHE_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_VHE_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_VMIDBITS_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_VMIDBITS_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_HADBS_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR1_HADBS_SHIFT, 4, 0),
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ARM64_FTR_END,
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ARM64_FTR_END,
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};
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};
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static const struct arm64_ftr_bits ftr_id_aa64mmfr2[] = {
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static const struct arm64_ftr_bits ftr_id_aa64mmfr2[] = {
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_LVA_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_LVA_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_IESB_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_IESB_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_LSM_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_LSM_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_UAO_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_UAO_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_CNP_SHIFT, 4, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64MMFR2_CNP_SHIFT, 4, 0),
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ARM64_FTR_END,
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ARM64_FTR_END,
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};
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};
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static const struct arm64_ftr_bits ftr_ctr[] = {
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static const struct arm64_ftr_bits ftr_ctr[] = {
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 31, 1, 1), /* RAO */
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, 31, 1, 1), /* RAO */
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ARM64_FTR_BITS(FTR_STRICT, FTR_HIGHER_SAFE, 24, 4, 0), /* CWG */
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_HIGHER_SAFE, 24, 4, 0), /* CWG */
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0), /* ERG */
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0), /* ERG */
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 1), /* DminLine */
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 1), /* DminLine */
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/*
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/*
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* Linux can handle differing I-cache policies. Userspace JITs will
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* Linux can handle differing I-cache policies. Userspace JITs will
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* make use of *minLine.
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* make use of *minLine.
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* If we have differing I-cache policies, report it as the weakest - AIVIVT.
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* If we have differing I-cache policies, report it as the weakest - AIVIVT.
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*/
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*/
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ARM64_FTR_BITS(FTR_NONSTRICT, FTR_EXACT, 14, 2, ICACHE_POLICY_AIVIVT), /* L1Ip */
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_NONSTRICT, FTR_EXACT, 14, 2, ICACHE_POLICY_AIVIVT), /* L1Ip */
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ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0), /* IminLine */
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ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0), /* IminLine */
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ARM64_FTR_END,
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ARM64_FTR_END,
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};
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};
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@ -159,78 +160,78 @@ struct arm64_ftr_reg arm64_ftr_reg_ctrel0 = {
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};
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};
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static const struct arm64_ftr_bits ftr_id_mmfr0[] = {
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static const struct arm64_ftr_bits ftr_id_mmfr0[] = {
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S_ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 28, 4, 0xf), /* InnerShr */
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S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 28, 4, 0xf), /* InnerShr */
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 24, 4, 0), /* FCSE */
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 24, 4, 0), /* FCSE */
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ARM64_FTR_BITS(FTR_NONSTRICT, FTR_LOWER_SAFE, 20, 4, 0), /* AuxReg */
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, 20, 4, 0), /* AuxReg */
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 16, 4, 0), /* TCM */
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 16, 4, 0), /* TCM */
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 12, 4, 0), /* ShareLvl */
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 12, 4, 0), /* ShareLvl */
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S_ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 8, 4, 0xf), /* OuterShr */
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S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 8, 4, 0xf), /* OuterShr */
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 4, 4, 0), /* PMSA */
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* PMSA */
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 0, 4, 0), /* VMSA */
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 0, 4, 0), /* VMSA */
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ARM64_FTR_END,
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ARM64_FTR_END,
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};
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};
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static const struct arm64_ftr_bits ftr_id_aa64dfr0[] = {
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static const struct arm64_ftr_bits ftr_id_aa64dfr0[] = {
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ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 36, 28, 0),
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ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 36, 28, 0),
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||||||
ARM64_FTR_BITS(FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR0_PMSVER_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64DFR0_PMSVER_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_CTX_CMPS_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_CTX_CMPS_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_WRPS_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_WRPS_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_BRPS_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_BRPS_SHIFT, 4, 0),
|
||||||
/*
|
/*
|
||||||
* We can instantiate multiple PMU instances with different levels
|
* We can instantiate multiple PMU instances with different levels
|
||||||
* of support.
|
* of support.
|
||||||
* */
|
*/
|
||||||
S_ARM64_FTR_BITS(FTR_NONSTRICT, FTR_EXACT, ID_AA64DFR0_PMUVER_SHIFT, 4, 0),
|
S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_EXACT, ID_AA64DFR0_PMUVER_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64DFR0_TRACEVER_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64DFR0_TRACEVER_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_AA64DFR0_DEBUGVER_SHIFT, 4, 0x6),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_AA64DFR0_DEBUGVER_SHIFT, 4, 0x6),
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
static const struct arm64_ftr_bits ftr_mvfr2[] = {
|
static const struct arm64_ftr_bits ftr_mvfr2[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 4, 4, 0), /* FPMisc */
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* FPMisc */
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 0, 4, 0), /* SIMDMisc */
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 0, 4, 0), /* SIMDMisc */
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
static const struct arm64_ftr_bits ftr_dczid[] = {
|
static const struct arm64_ftr_bits ftr_dczid[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 4, 1, 1), /* DZP */
|
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, 4, 1, 1), /* DZP */
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0), /* BS */
|
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0), /* BS */
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
||||||
static const struct arm64_ftr_bits ftr_id_isar5[] = {
|
static const struct arm64_ftr_bits ftr_id_isar5[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_ISAR5_RDM_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_RDM_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_ISAR5_CRC32_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_CRC32_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_ISAR5_SHA2_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_SHA2_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_ISAR5_SHA1_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_SHA1_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_ISAR5_AES_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_AES_SHIFT, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, ID_ISAR5_SEVL_SHIFT, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, ID_ISAR5_SEVL_SHIFT, 4, 0),
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
static const struct arm64_ftr_bits ftr_id_mmfr4[] = {
|
static const struct arm64_ftr_bits ftr_id_mmfr4[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 4, 4, 0), /* ac2 */
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* ac2 */
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
static const struct arm64_ftr_bits ftr_id_pfr0[] = {
|
static const struct arm64_ftr_bits ftr_id_pfr0[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 12, 4, 0), /* State3 */
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 12, 4, 0), /* State3 */
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 8, 4, 0), /* State2 */
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 8, 4, 0), /* State2 */
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 4, 4, 0), /* State1 */
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 4, 4, 0), /* State1 */
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 0, 4, 0), /* State0 */
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 0, 4, 0), /* State0 */
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
static const struct arm64_ftr_bits ftr_id_dfr0[] = {
|
static const struct arm64_ftr_bits ftr_id_dfr0[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 28, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 28, 4, 0),
|
||||||
S_ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 24, 4, 0xf), /* PerfMon */
|
S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 24, 4, 0xf), /* PerfMon */
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0),
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
@ -241,20 +242,20 @@ static const struct arm64_ftr_bits ftr_id_dfr0[] = {
|
|||||||
* id_isar[0-4], id_mmfr[1-3], id_pfr1, mvfr[0-1]
|
* id_isar[0-4], id_mmfr[1-3], id_pfr1, mvfr[0-1]
|
||||||
*/
|
*/
|
||||||
static const struct arm64_ftr_bits ftr_generic_32bits[] = {
|
static const struct arm64_ftr_bits ftr_generic_32bits[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 28, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 28, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 24, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 24, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0),
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 0, 4, 0),
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
/* Table for a single 32bit feature value */
|
/* Table for a single 32bit feature value */
|
||||||
static const struct arm64_ftr_bits ftr_single32[] = {
|
static const struct arm64_ftr_bits ftr_single32[] = {
|
||||||
ARM64_FTR_BITS(FTR_STRICT, FTR_EXACT, 0, 32, 0),
|
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_EXACT, 0, 32, 0),
|
||||||
ARM64_FTR_END,
|
ARM64_FTR_END,
|
||||||
};
|
};
|
||||||
|
|
||||||
@ -402,6 +403,7 @@ static void __init init_cpu_ftr_reg(u32 sys_reg, u64 new)
|
|||||||
{
|
{
|
||||||
u64 val = 0;
|
u64 val = 0;
|
||||||
u64 strict_mask = ~0x0ULL;
|
u64 strict_mask = ~0x0ULL;
|
||||||
|
u64 user_mask = 0;
|
||||||
u64 valid_mask = 0;
|
u64 valid_mask = 0;
|
||||||
|
|
||||||
const struct arm64_ftr_bits *ftrp;
|
const struct arm64_ftr_bits *ftrp;
|
||||||
@ -418,12 +420,19 @@ static void __init init_cpu_ftr_reg(u32 sys_reg, u64 new)
|
|||||||
valid_mask |= ftr_mask;
|
valid_mask |= ftr_mask;
|
||||||
if (!ftrp->strict)
|
if (!ftrp->strict)
|
||||||
strict_mask &= ~ftr_mask;
|
strict_mask &= ~ftr_mask;
|
||||||
|
if (ftrp->visible)
|
||||||
|
user_mask |= ftr_mask;
|
||||||
|
else
|
||||||
|
reg->user_val = arm64_ftr_set_value(ftrp,
|
||||||
|
reg->user_val,
|
||||||
|
ftrp->safe_val);
|
||||||
}
|
}
|
||||||
|
|
||||||
val &= valid_mask;
|
val &= valid_mask;
|
||||||
|
|
||||||
reg->sys_val = val;
|
reg->sys_val = val;
|
||||||
reg->strict_mask = strict_mask;
|
reg->strict_mask = strict_mask;
|
||||||
|
reg->user_mask = user_mask;
|
||||||
}
|
}
|
||||||
|
|
||||||
void __init init_cpu_features(struct cpuinfo_arm64 *info)
|
void __init init_cpu_features(struct cpuinfo_arm64 *info)
|
||||||
|
@ -496,7 +496,7 @@ static void ctr_read_handler(unsigned int esr, struct pt_regs *regs)
|
|||||||
{
|
{
|
||||||
int rt = (esr & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT;
|
int rt = (esr & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT;
|
||||||
|
|
||||||
regs->regs[rt] = arm64_ftr_reg_ctrel0.sys_val;
|
regs->regs[rt] = arm64_ftr_reg_user_value(&arm64_ftr_reg_ctrel0);
|
||||||
regs->pc += 4;
|
regs->pc += 4;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user