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Thu, 27 Feb 2025 20:12:30 -0800 (PST) Received: from [127.0.1.1] ([49.130.74.133]) by smtp.googlemail.com with ESMTPSA id 41be03b00d2f7-aee7dec4114sm2387856a12.57.2025.02.27.20.12.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Feb 2025 20:12:29 -0800 (PST) From: Nick Chan Date: Fri, 28 Feb 2025 12:06:47 +0800 Subject: [PATCH v5 07/11] drivers/perf: apple_m1: Add Apple A7 support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250228-apple-cpmu-v5-7-9e124cd28ed4@gmail.com> References: <20250228-apple-cpmu-v5-0-9e124cd28ed4@gmail.com> In-Reply-To: <20250228-apple-cpmu-v5-0-9e124cd28ed4@gmail.com> To: Will Deacon , Mark Rutland , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Catalin Marinas Cc: Marc Zyngier , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, devicetree@vger.kernel.org, asahi@lists.linux.dev, linux-kernel@vger.kernel.org, Nick Chan X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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a=openpgp; fpr=4B5278785C97ACF79C3C688301CA08B7A6C50824 Add support for the CPU PMU found in the Apple A7 SoC. The PMU has 8 counters and a very different event layout compared to the M1 PMU. Interrupts are delivered as IRQs instead of FIQs like on the M1. Signed-off-by: Nick Chan --- drivers/perf/apple_m1_cpu_pmu.c | 190 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 190 insertions(+) diff --git a/drivers/perf/apple_m1_cpu_pmu.c b/drivers/perf/apple_m1_cpu_pmu.c index f98f3e95bfdbb5e9d0fe66357f6037f056fbf25c..93b49f08e5c740c5bba2eede191e279ed4965181 100644 --- a/drivers/perf/apple_m1_cpu_pmu.c +++ b/drivers/perf/apple_m1_cpu_pmu.c @@ -18,6 +18,7 @@ #include #include +#define A7_PMU_NR_COUNTERS 8 #define M1_PMU_NR_COUNTERS 10 #define APPLE_PMU_MAX_NR_COUNTERS 10 @@ -44,6 +45,143 @@ * know next to nothing about the events themselves, and we already have * per cpu-type PMU abstractions. */ + +enum a7_pmu_events { + A7_PMU_PERFCTR_INST_ALL = 0x0, + A7_PMU_PERFCTR_UNKNOWN_1 = 0x1, + A7_PMU_PERFCTR_CORE_ACTIVE_CYCLE = 0x2, + A7_PMU_PERFCTR_L2_TLB_MISS_INSTRUCTION = 0x10, + A7_PMU_PERFCTR_L2_TLB_MISS_DATA = 0x11, + A7_PMU_PERFCTR_BIU_UPSTREAM_CYCLE = 0x19, + A7_PMU_PERFCTR_BIU_DOWNSTREAM_CYCLE = 0x20, + A7_PMU_PERFCTR_L2C_AGENT_LD = 0x22, + A7_PMU_PERFCTR_L2C_AGENT_LD_MISS = 0x23, + A7_PMU_PERFCTR_L2C_AGENT_ST = 0x24, + A7_PMU_PERFCTR_L2C_AGENT_ST_MISS = 0x25, + A7_PMU_PERFCTR_SCHEDULE_UOP = 0x58, + A7_PMU_PERFCTR_MAP_REWIND = 0x61, + A7_PMU_PERFCTR_MAP_STALL = 0x62, + A7_PMU_PERFCTR_FLUSH_RESTART_OTHER_NONSPEC = 0x6e, + A7_PMU_PERFCTR_INST_A32 = 0x78, + A7_PMU_PERFCTR_INST_T32 = 0x79, + A7_PMU_PERFCTR_INST_A64 = 0x7a, + A7_PMU_PERFCTR_INST_BRANCH = 0x7b, + A7_PMU_PERFCTR_INST_BRANCH_CALL = 0x7c, + A7_PMU_PERFCTR_INST_BRANCH_RET = 0x7d, + A7_PMU_PERFCTR_INST_BRANCH_TAKEN = 0x7e, + A7_PMU_PERFCTR_INST_BRANCH_INDIR = 0x81, + A7_PMU_PERFCTR_INST_BRANCH_COND = 0x82, + A7_PMU_PERFCTR_INST_INT_LD = 0x83, + A7_PMU_PERFCTR_INST_INT_ST = 0x84, + A7_PMU_PERFCTR_INST_INT_ALU = 0x85, + A7_PMU_PERFCTR_INST_SIMD_LD = 0x86, + A7_PMU_PERFCTR_INST_SIMD_ST = 0x87, + A7_PMU_PERFCTR_INST_SIMD_ALU = 0x88, + A7_PMU_PERFCTR_INST_LDST = 0x89, + A7_PMU_PERFCTR_UNKNOWN_8d = 0x8d, + A7_PMU_PERFCTR_UNKNOWN_8e = 0x8e, + A7_PMU_PERFCTR_UNKNOWN_8f = 0x8f, + A7_PMU_PERFCTR_UNKNOWN_90 = 0x90, + A7_PMU_PERFCTR_UNKNOWN_93 = 0x93, + A7_PMU_PERFCTR_UNKNOWN_94 = 0x94, + A7_PMU_PERFCTR_UNKNOWN_95 = 0x95, + A7_PMU_PERFCTR_L1D_TLB_ACCESS = 0x96, + A7_PMU_PERFCTR_L1D_TLB_MISS = 0x97, + A7_PMU_PERFCTR_L1D_CACHE_MISS_ST = 0x98, + A7_PMU_PERFCTR_L1D_CACHE_MISS_LD = 0x99, + A7_PMU_PERFCTR_UNKNOWN_9b = 0x9b, + A7_PMU_PERFCTR_LD_UNIT_UOP = 0x9c, + A7_PMU_PERFCTR_ST_UNIT_UOP = 0x9d, + A7_PMU_PERFCTR_L1D_CACHE_WRITEBACK = 0x9e, + A7_PMU_PERFCTR_UNKNOWN_9f = 0x9f, + A7_PMU_PERFCTR_LDST_X64_UOP = 0xa7, + A7_PMU_PERFCTR_L1D_CACHE_MISS_LD_NONSPEC = 0xb4, + A7_PMU_PERFCTR_L1D_CACHE_MISS_ST_NONSPEC = 0xb5, + A7_PMU_PERFCTR_L1D_TLB_MISS_NONSPEC = 0xb6, + A7_PMU_PERFCTR_ST_MEMORY_ORDER_VIOLATION_NONSPEC = 0xb9, + A7_PMU_PERFCTR_BRANCH_COND_MISPRED_NONSPEC = 0xba, + A7_PMU_PERFCTR_BRANCH_INDIR_MISPRED_NONSPEC = 0xbb, + A7_PMU_PERFCTR_BRANCH_RET_INDIR_MISPRED_NONSPEC = 0xbd, + A7_PMU_PERFCTR_BRANCH_CALL_INDIR_MISPRED_NONSPEC = 0xbf, + A7_PMU_PERFCTR_BRANCH_MISPRED_NONSPEC = 0xc0, + A7_PMU_PERFCTR_UNKNOWN_c1 = 0xc1, + A7_PMU_PERFCTR_UNKNOWN_c4 = 0xc4, + A7_PMU_PERFCTR_UNKNOWN_c5 = 0xc5, + A7_PMU_PERFCTR_UNKNOWN_c6 = 0xc6, + A7_PMU_PERFCTR_UNKNOWN_c8 = 0xc8, + A7_PMU_PERFCTR_UNKNOWN_ca = 0xca, + A7_PMU_PERFCTR_UNKNOWN_cb = 0xcb, + A7_PMU_PERFCTR_FED_IC_MISS_DEMAND = 0xce, + A7_PMU_PERFCTR_L1I_TLB_MISS_DEMAND = 0xcf, + A7_PMU_PERFCTR_UNKNOWN_f5 = 0xf5, + A7_PMU_PERFCTR_UNKNOWN_f6 = 0xf6, + A7_PMU_PERFCTR_UNKNOWN_f7 = 0xf7, + A7_PMU_PERFCTR_UNKNOWN_f8 = 0xf8, + A7_PMU_PERFCTR_UNKNOWN_fd = 0xfd, + A7_PMU_PERFCTR_LAST = M1_PMU_CFG_EVENT, + /* + * From this point onwards, these are not actual HW events, + * but attributes that get stored in hw->config_base. + */ + A7_PMU_CFG_COUNT_USER = BIT(8), + A7_PMU_CFG_COUNT_KERNEL = BIT(9), +}; + +static const u16 a7_pmu_event_affinity[A7_PMU_PERFCTR_LAST + 1] = { + [0 ... A7_PMU_PERFCTR_LAST] = ANY_BUT_0_1, + [A7_PMU_PERFCTR_INST_ALL] = ANY_BUT_0_1 | BIT(1), + [A7_PMU_PERFCTR_UNKNOWN_1] = ONLY_5_6_7, + [A7_PMU_PERFCTR_CORE_ACTIVE_CYCLE] = ANY_BUT_0_1 | BIT(0), + [A7_PMU_PERFCTR_INST_A32] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_T32] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_A64] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_BRANCH] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_BRANCH_CALL] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_BRANCH_RET] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_BRANCH_TAKEN] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_BRANCH_INDIR] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_BRANCH_COND] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_INT_LD] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_INT_ST] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_INT_ALU] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_SIMD_LD] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_SIMD_ST] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_SIMD_ALU] = ONLY_5_6_7, + [A7_PMU_PERFCTR_INST_LDST] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_8d] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_8e] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_8f] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_90] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_93] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_94] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_95] = ONLY_5_6_7, + [A7_PMU_PERFCTR_L1D_CACHE_MISS_ST] = ONLY_5_6_7, + [A7_PMU_PERFCTR_L1D_CACHE_MISS_LD] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_9b] = ONLY_5_6_7, + [A7_PMU_PERFCTR_LD_UNIT_UOP] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_9f] = ONLY_5_6_7, + [A7_PMU_PERFCTR_L1D_CACHE_MISS_LD_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_L1D_CACHE_MISS_ST_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_L1D_TLB_MISS_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_ST_MEMORY_ORDER_VIOLATION_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_BRANCH_COND_MISPRED_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_BRANCH_INDIR_MISPRED_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_BRANCH_RET_INDIR_MISPRED_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_BRANCH_CALL_INDIR_MISPRED_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_BRANCH_MISPRED_NONSPEC] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_c1] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_c4] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_c5] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_c6] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_c8] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_ca] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_cb] = ONLY_5_6_7, + [A7_PMU_PERFCTR_UNKNOWN_f5] = ONLY_2_4_6, + [A7_PMU_PERFCTR_UNKNOWN_f6] = ONLY_2_4_6, + [A7_PMU_PERFCTR_UNKNOWN_f7] = ONLY_2_4_6, + [A7_PMU_PERFCTR_UNKNOWN_fd] = ONLY_2_4_6, +}; + enum m1_pmu_events { M1_PMU_PERFCTR_RETIRE_UOP = 0x1, M1_PMU_PERFCTR_CORE_ACTIVE_CYCLE = 0x2, @@ -162,6 +300,14 @@ static const u16 m1_pmu_event_affinity[M1_PMU_PERFCTR_LAST + 1] = { [M1_PMU_PERFCTR_UNKNOWN_fd] = ONLY_2_4_6, }; +static const unsigned int a7_pmu_perf_map[PERF_COUNT_HW_MAX] = { + PERF_MAP_ALL_UNSUPPORTED, + [PERF_COUNT_HW_CPU_CYCLES] = A7_PMU_PERFCTR_CORE_ACTIVE_CYCLE, + [PERF_COUNT_HW_INSTRUCTIONS] = A7_PMU_PERFCTR_INST_ALL, + [PERF_COUNT_HW_BRANCH_MISSES] = A7_PMU_PERFCTR_BRANCH_MISPRED_NONSPEC, + [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = A7_PMU_PERFCTR_INST_BRANCH +}; + static const unsigned m1_pmu_perf_map[PERF_COUNT_HW_MAX] = { PERF_MAP_ALL_UNSUPPORTED, [PERF_COUNT_HW_CPU_CYCLES] = M1_PMU_PERFCTR_CORE_ACTIVE_CYCLE, @@ -185,6 +331,17 @@ static ssize_t m1_pmu_events_sysfs_show(struct device *dev, #define M1_PMU_EVENT_ATTR(name, config) \ PMU_EVENT_ATTR_ID(name, m1_pmu_events_sysfs_show, config) +static struct attribute *a7_pmu_event_attrs[] = { + M1_PMU_EVENT_ATTR(cycles, A7_PMU_PERFCTR_CORE_ACTIVE_CYCLE), + M1_PMU_EVENT_ATTR(instructions, A7_PMU_PERFCTR_INST_ALL), + NULL, +}; + +static const struct attribute_group a7_pmu_events_attr_group = { + .name = "events", + .attrs = a7_pmu_event_attrs, +}; + static struct attribute *m1_pmu_event_attrs[] = { M1_PMU_EVENT_ATTR(cycles, M1_PMU_PERFCTR_CORE_ACTIVE_CYCLE), M1_PMU_EVENT_ATTR(instructions, M1_PMU_PERFCTR_INST_ALL), @@ -494,6 +651,12 @@ static int apple_pmu_get_event_idx(struct pmu_hw_events *cpuc, return -EAGAIN; } +static int a7_pmu_get_event_idx(struct pmu_hw_events *cpuc, + struct perf_event *event) +{ + return apple_pmu_get_event_idx(cpuc, event, a7_pmu_event_affinity); +} + static int m1_pmu_get_event_idx(struct pmu_hw_events *cpuc, struct perf_event *event) { @@ -517,6 +680,11 @@ static void __m1_pmu_set_mode(u8 mode) isb(); } +static void a7_pmu_start(struct arm_pmu *cpu_pmu) +{ + __m1_pmu_set_mode(PMCR0_IMODE_AIC); +} + static void m1_pmu_start(struct arm_pmu *cpu_pmu) { __m1_pmu_set_mode(PMCR0_IMODE_FIQ); @@ -551,6 +719,11 @@ static int apple_pmu_map_event_63(struct perf_event *event, return armpmu_map_event(event, perf_map, NULL, M1_PMU_CFG_EVENT); } +static int a7_pmu_map_event(struct perf_event *event) +{ + return apple_pmu_map_event_47(event, &a7_pmu_perf_map); +} + static int m1_pmu_map_event(struct perf_event *event) { return apple_pmu_map_event_47(event, &m1_pmu_perf_map); @@ -576,6 +749,11 @@ static void apple_pmu_reset(void *info, u32 counters) isb(); } +static void a7_pmu_reset(void *info) +{ + apple_pmu_reset(info, A7_PMU_NR_COUNTERS); +} + static void m1_pmu_reset(void *info) { apple_pmu_reset(info, M1_PMU_NR_COUNTERS); @@ -617,6 +795,17 @@ static int apple_pmu_init(struct arm_pmu *cpu_pmu, u32 counters) } /* Device driver gunk */ +static int a7_pmu_cyclone_init(struct arm_pmu *cpu_pmu) +{ + cpu_pmu->name = "apple_cyclone_pmu"; + cpu_pmu->get_event_idx = a7_pmu_get_event_idx; + cpu_pmu->map_event = a7_pmu_map_event; + cpu_pmu->reset = a7_pmu_reset; + cpu_pmu->start = a7_pmu_start; + cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] = &a7_pmu_events_attr_group; + return apple_pmu_init(cpu_pmu, A7_PMU_NR_COUNTERS); +} + static int m1_pmu_ice_init(struct arm_pmu *cpu_pmu) { cpu_pmu->name = "apple_icestorm_pmu"; @@ -666,6 +855,7 @@ static const struct of_device_id m1_pmu_of_device_ids[] = { { .compatible = "apple,blizzard-pmu", .data = m2_pmu_blizzard_init, }, { .compatible = "apple,icestorm-pmu", .data = m1_pmu_ice_init, }, { .compatible = "apple,firestorm-pmu", .data = m1_pmu_fire_init, }, + { .compatible = "apple,cyclone-pmu", .data = a7_pmu_cyclone_init, }, { }, }; MODULE_DEVICE_TABLE(of, m1_pmu_of_device_ids); -- 2.48.1