From: Suzuki K Poulose suzuki.poulose@arm.com
[ Upstream commit 5e7951ce19abf4113645ae789c033917356ee96f ]
We are about to introduce generic MIDR range helpers. Clean up the existing helpers in erratum handling, preparing them to use generic version.
Cc: Will Deacon will.deacon@arm.com Cc: Mark Rutland mark.rutland@arm.com Cc: Ard Biesheuvel ard.biesheuvel@linaro.org Reviewed-by: Dave Martin dave.martin@arm.com Signed-off-by: Suzuki K Poulose suzuki.poulose@arm.com Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Ard Biesheuvel ard.biesheuvel@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: James Morse james.morse@arm.com --- arch/arm64/kernel/cpu_errata.c | 80 +++++++++++++++++++++------------- 1 file changed, 49 insertions(+), 31 deletions(-)
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 242c2ec110d6..858a4954907d 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -368,20 +368,38 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry, } #endif /* CONFIG_ARM64_SSBD */
-#define MIDR_RANGE(model, min, max) \ - .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ - .matches = is_affected_midr_range, \ - .midr_model = model, \ - .midr_range_min = min, \ - .midr_range_max = max +#define CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \ + .matches = is_affected_midr_range, \ + .midr_model = model, \ + .midr_range_min = MIDR_CPU_VAR_REV(v_min, r_min), \ + .midr_range_max = MIDR_CPU_VAR_REV(v_max, r_max)
-#define MIDR_ALL_VERSIONS(model) \ - .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ - .matches = is_affected_midr_range, \ - .midr_model = model, \ - .midr_range_min = 0, \ +#define CAP_MIDR_ALL_VERSIONS(model) \ + .matches = is_affected_midr_range, \ + .midr_model = model, \ + .midr_range_min = MIDR_CPU_VAR_REV(0, 0), \ .midr_range_max = (MIDR_VARIANT_MASK | MIDR_REVISION_MASK)
+#define MIDR_FIXED(rev, revidr_mask) \ + .fixed_revs = (struct arm64_midr_revidr[]){{ (rev), (revidr_mask) }, {}} + +#define ERRATA_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \ + .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ + CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) + +/* Errata affecting a range of revisions of given model variant */ +#define ERRATA_MIDR_REV_RANGE(m, var, r_min, r_max) \ + ERRATA_MIDR_RANGE(m, var, r_min, var, r_max) + +/* Errata affecting a single variant/revision of a model */ +#define ERRATA_MIDR_REV(model, var, rev) \ + ERRATA_MIDR_RANGE(model, var, rev, var, rev) + +/* Errata affecting all variants/revisions of a given a model */ +#define ERRATA_MIDR_ALL_VERSIONS(model) \ + .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ + CAP_MIDR_ALL_VERSIONS(model) + const struct arm64_cpu_capabilities arm64_errata[] = { #if defined(CONFIG_ARM64_ERRATUM_826319) || \ defined(CONFIG_ARM64_ERRATUM_827319) || \ @@ -390,7 +408,7 @@ const struct arm64_cpu_capabilities arm64_errata[] = { /* Cortex-A53 r0p[012] */ .desc = "ARM errata 826319, 827319, 824069", .capability = ARM64_WORKAROUND_CLEAN_CACHE, - MIDR_RANGE(MIDR_CORTEX_A53, 0x00, 0x02), + ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 2), .cpu_enable = cpu_enable_cache_maint_trap, }, #endif @@ -399,7 +417,7 @@ const struct arm64_cpu_capabilities arm64_errata[] = { /* Cortex-A53 r0p[01] */ .desc = "ARM errata 819472", .capability = ARM64_WORKAROUND_CLEAN_CACHE, - MIDR_RANGE(MIDR_CORTEX_A53, 0x00, 0x01), + ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 1), .cpu_enable = cpu_enable_cache_maint_trap, }, #endif @@ -408,9 +426,9 @@ const struct arm64_cpu_capabilities arm64_errata[] = { /* Cortex-A57 r0p0 - r1p2 */ .desc = "ARM erratum 832075", .capability = ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE, - MIDR_RANGE(MIDR_CORTEX_A57, - MIDR_CPU_VAR_REV(0, 0), - MIDR_CPU_VAR_REV(1, 2)), + ERRATA_MIDR_RANGE(MIDR_CORTEX_A57, + 0, 0, + 1, 2), }, #endif #ifdef CONFIG_ARM64_ERRATUM_834220 @@ -418,9 +436,9 @@ const struct arm64_cpu_capabilities arm64_errata[] = { /* Cortex-A57 r0p0 - r1p2 */ .desc = "ARM erratum 834220", .capability = ARM64_WORKAROUND_834220, - MIDR_RANGE(MIDR_CORTEX_A57, - MIDR_CPU_VAR_REV(0, 0), - MIDR_CPU_VAR_REV(1, 2)), + ERRATA_MIDR_RANGE(MIDR_CORTEX_A57, + 0, 0, + 1, 2), }, #endif #ifdef CONFIG_ARM64_ERRATUM_845719 @@ -428,7 +446,7 @@ const struct arm64_cpu_capabilities arm64_errata[] = { /* Cortex-A53 r0p[01234] */ .desc = "ARM erratum 845719", .capability = ARM64_WORKAROUND_845719, - MIDR_RANGE(MIDR_CORTEX_A53, 0x00, 0x04), + ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4), }, #endif #ifdef CONFIG_CAVIUM_ERRATUM_23154 @@ -436,7 +454,7 @@ const struct arm64_cpu_capabilities arm64_errata[] = { /* Cavium ThunderX, pass 1.x */ .desc = "Cavium erratum 23154", .capability = ARM64_WORKAROUND_CAVIUM_23154, - MIDR_RANGE(MIDR_THUNDERX, 0x00, 0x01), + ERRATA_MIDR_REV_RANGE(MIDR_THUNDERX, 0, 0, 1), }, #endif #ifdef CONFIG_CAVIUM_ERRATUM_27456 @@ -444,15 +462,15 @@ const struct arm64_cpu_capabilities arm64_errata[] = { /* Cavium ThunderX, T88 pass 1.x - 2.1 */ .desc = "Cavium erratum 27456", .capability = ARM64_WORKAROUND_CAVIUM_27456, - MIDR_RANGE(MIDR_THUNDERX, - MIDR_CPU_VAR_REV(0, 0), - MIDR_CPU_VAR_REV(1, 1)), + ERRATA_MIDR_RANGE(MIDR_THUNDERX, + 0, 0, + 1, 1), }, { /* Cavium ThunderX, T81 pass 1.0 */ .desc = "Cavium erratum 27456", .capability = ARM64_WORKAROUND_CAVIUM_27456, - MIDR_RANGE(MIDR_THUNDERX_81XX, 0x00, 0x00), + ERRATA_MIDR_REV(MIDR_THUNDERX_81XX, 0, 0), }, #endif { @@ -472,32 +490,32 @@ const struct arm64_cpu_capabilities arm64_errata[] = { #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR { .capability = ARM64_HARDEN_BRANCH_PREDICTOR, - MIDR_ALL_VERSIONS(MIDR_CORTEX_A57), + ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A57), .cpu_enable = enable_smccc_arch_workaround_1, }, { .capability = ARM64_HARDEN_BRANCH_PREDICTOR, - MIDR_ALL_VERSIONS(MIDR_CORTEX_A72), + ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A72), .cpu_enable = enable_smccc_arch_workaround_1, }, { .capability = ARM64_HARDEN_BRANCH_PREDICTOR, - MIDR_ALL_VERSIONS(MIDR_CORTEX_A73), + ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A73), .cpu_enable = enable_smccc_arch_workaround_1, }, { .capability = ARM64_HARDEN_BRANCH_PREDICTOR, - MIDR_ALL_VERSIONS(MIDR_CORTEX_A75), + ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A75), .cpu_enable = enable_smccc_arch_workaround_1, }, { .capability = ARM64_HARDEN_BRANCH_PREDICTOR, - MIDR_ALL_VERSIONS(MIDR_BRCM_VULCAN), + ERRATA_MIDR_ALL_VERSIONS(MIDR_BRCM_VULCAN), .cpu_enable = enable_smccc_arch_workaround_1, }, { .capability = ARM64_HARDEN_BRANCH_PREDICTOR, - MIDR_ALL_VERSIONS(MIDR_CAVIUM_THUNDERX2), + ERRATA_MIDR_ALL_VERSIONS(MIDR_CAVIUM_THUNDERX2), .cpu_enable = enable_smccc_arch_workaround_1, }, #endif