| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Performance counter support for POWER10 processors. |
| * |
| * Copyright 2020 Madhavan Srinivasan, IBM Corporation. |
| * Copyright 2020 Athira Rajeev, IBM Corporation. |
| */ |
| |
| #define pr_fmt(fmt) "power10-pmu: " fmt |
| |
| #include "isa207-common.h" |
| |
| /* |
| * Raw event encoding for Power10: |
| * |
| * 60 56 52 48 44 40 36 32 |
| * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | |
| * | | [ ] [ src_match ] [ src_mask ] | [ ] [ l2l3_sel ] [ thresh_ctl ] |
| * | | | | | | |
| * | | *- IFM (Linux) | | thresh start/stop -* |
| * | *- BHRB (Linux) | src_sel |
| * *- EBB (Linux) *invert_bit |
| * |
| * 28 24 20 16 12 8 4 0 |
| * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | |
| * [ ] [ sample ] [ ] [ ] [ pmc ] [unit ] [ ] | m [ pmcxsel ] |
| * | | | | | | | |
| * | | | | | | *- mark |
| * | | | *- L1/L2/L3 cache_sel | |*-radix_scope_qual |
| * | | sdar_mode | |
| * | *- sampling mode for marked events *- combine |
| * | |
| * *- thresh_sel |
| * |
| * Below uses IBM bit numbering. |
| * |
| * MMCR1[x:y] = unit (PMCxUNIT) |
| * MMCR1[24] = pmc1combine[0] |
| * MMCR1[25] = pmc1combine[1] |
| * MMCR1[26] = pmc2combine[0] |
| * MMCR1[27] = pmc2combine[1] |
| * MMCR1[28] = pmc3combine[0] |
| * MMCR1[29] = pmc3combine[1] |
| * MMCR1[30] = pmc4combine[0] |
| * MMCR1[31] = pmc4combine[1] |
| * |
| * if pmc == 3 and unit == 0 and pmcxsel[0:6] == 0b0101011 |
| * MMCR1[20:27] = thresh_ctl |
| * else if pmc == 4 and unit == 0xf and pmcxsel[0:6] == 0b0101001 |
| * MMCR1[20:27] = thresh_ctl |
| * else |
| * MMCRA[48:55] = thresh_ctl (THRESH START/END) |
| * |
| * if thresh_sel: |
| * MMCRA[45:47] = thresh_sel |
| * |
| * if l2l3_sel: |
| * MMCR2[56:60] = l2l3_sel[0:4] |
| * |
| * MMCR1[16] = cache_sel[0] |
| * MMCR1[17] = cache_sel[1] |
| * MMCR1[18] = radix_scope_qual |
| * |
| * if mark: |
| * MMCRA[63] = 1 (SAMPLE_ENABLE) |
| * MMCRA[57:59] = sample[0:2] (RAND_SAMP_ELIG) |
| * MMCRA[61:62] = sample[3:4] (RAND_SAMP_MODE) |
| * |
| * if EBB and BHRB: |
| * MMCRA[32:33] = IFM |
| * |
| * MMCRA[SDAR_MODE] = sdar_mode[0:1] |
| */ |
| |
| /* |
| * Some power10 event codes. |
| */ |
| #define EVENT(_name, _code) enum{_name = _code} |
| |
| #include "power10-events-list.h" |
| |
| #undef EVENT |
| |
| /* MMCRA IFM bits - POWER10 */ |
| #define POWER10_MMCRA_IFM1 0x0000000040000000UL |
| #define POWER10_MMCRA_IFM2 0x0000000080000000UL |
| #define POWER10_MMCRA_IFM3 0x00000000C0000000UL |
| #define POWER10_MMCRA_BHRB_MASK 0x00000000C0000000UL |
| |
| extern u64 PERF_REG_EXTENDED_MASK; |
| |
| /* Table of alternatives, sorted by column 0 */ |
| static const unsigned int power10_event_alternatives[][MAX_ALT] = { |
| { PM_RUN_CYC_ALT, PM_RUN_CYC }, |
| { PM_RUN_INST_CMPL_ALT, PM_RUN_INST_CMPL }, |
| }; |
| |
| static int power10_get_alternatives(u64 event, unsigned int flags, u64 alt[]) |
| { |
| int num_alt = 0; |
| |
| num_alt = isa207_get_alternatives(event, alt, |
| ARRAY_SIZE(power10_event_alternatives), flags, |
| power10_event_alternatives); |
| |
| return num_alt; |
| } |
| |
| GENERIC_EVENT_ATTR(cpu-cycles, PM_RUN_CYC); |
| GENERIC_EVENT_ATTR(instructions, PM_RUN_INST_CMPL); |
| GENERIC_EVENT_ATTR(branch-instructions, PM_BR_CMPL); |
| GENERIC_EVENT_ATTR(branch-misses, PM_BR_MPRED_CMPL); |
| GENERIC_EVENT_ATTR(cache-references, PM_LD_REF_L1); |
| GENERIC_EVENT_ATTR(cache-misses, PM_LD_MISS_L1); |
| GENERIC_EVENT_ATTR(mem-loads, MEM_LOADS); |
| GENERIC_EVENT_ATTR(mem-stores, MEM_STORES); |
| |
| CACHE_EVENT_ATTR(L1-dcache-load-misses, PM_LD_MISS_L1); |
| CACHE_EVENT_ATTR(L1-dcache-loads, PM_LD_REF_L1); |
| CACHE_EVENT_ATTR(L1-dcache-prefetches, PM_LD_PREFETCH_CACHE_LINE_MISS); |
| CACHE_EVENT_ATTR(L1-dcache-store-misses, PM_ST_MISS_L1); |
| CACHE_EVENT_ATTR(L1-icache-load-misses, PM_L1_ICACHE_MISS); |
| CACHE_EVENT_ATTR(L1-icache-loads, PM_INST_FROM_L1); |
| CACHE_EVENT_ATTR(L1-icache-prefetches, PM_IC_PREF_REQ); |
| CACHE_EVENT_ATTR(LLC-load-misses, PM_DATA_FROM_L3MISS); |
| CACHE_EVENT_ATTR(LLC-loads, PM_DATA_FROM_L3); |
| CACHE_EVENT_ATTR(branch-load-misses, PM_BR_MPRED_CMPL); |
| CACHE_EVENT_ATTR(branch-loads, PM_BR_CMPL); |
| CACHE_EVENT_ATTR(dTLB-load-misses, PM_DTLB_MISS); |
| CACHE_EVENT_ATTR(iTLB-load-misses, PM_ITLB_MISS); |
| |
| static struct attribute *power10_events_attr[] = { |
| GENERIC_EVENT_PTR(PM_RUN_CYC), |
| GENERIC_EVENT_PTR(PM_RUN_INST_CMPL), |
| GENERIC_EVENT_PTR(PM_BR_CMPL), |
| GENERIC_EVENT_PTR(PM_BR_MPRED_CMPL), |
| GENERIC_EVENT_PTR(PM_LD_REF_L1), |
| GENERIC_EVENT_PTR(PM_LD_MISS_L1), |
| GENERIC_EVENT_PTR(MEM_LOADS), |
| GENERIC_EVENT_PTR(MEM_STORES), |
| CACHE_EVENT_PTR(PM_LD_MISS_L1), |
| CACHE_EVENT_PTR(PM_LD_REF_L1), |
| CACHE_EVENT_PTR(PM_LD_PREFETCH_CACHE_LINE_MISS), |
| CACHE_EVENT_PTR(PM_ST_MISS_L1), |
| CACHE_EVENT_PTR(PM_L1_ICACHE_MISS), |
| CACHE_EVENT_PTR(PM_INST_FROM_L1), |
| CACHE_EVENT_PTR(PM_IC_PREF_REQ), |
| CACHE_EVENT_PTR(PM_DATA_FROM_L3MISS), |
| CACHE_EVENT_PTR(PM_DATA_FROM_L3), |
| CACHE_EVENT_PTR(PM_BR_MPRED_CMPL), |
| CACHE_EVENT_PTR(PM_BR_CMPL), |
| CACHE_EVENT_PTR(PM_DTLB_MISS), |
| CACHE_EVENT_PTR(PM_ITLB_MISS), |
| NULL |
| }; |
| |
| static struct attribute_group power10_pmu_events_group = { |
| .name = "events", |
| .attrs = power10_events_attr, |
| }; |
| |
| PMU_FORMAT_ATTR(event, "config:0-59"); |
| PMU_FORMAT_ATTR(pmcxsel, "config:0-7"); |
| PMU_FORMAT_ATTR(mark, "config:8"); |
| PMU_FORMAT_ATTR(combine, "config:10-11"); |
| PMU_FORMAT_ATTR(unit, "config:12-15"); |
| PMU_FORMAT_ATTR(pmc, "config:16-19"); |
| PMU_FORMAT_ATTR(cache_sel, "config:20-21"); |
| PMU_FORMAT_ATTR(sdar_mode, "config:22-23"); |
| PMU_FORMAT_ATTR(sample_mode, "config:24-28"); |
| PMU_FORMAT_ATTR(thresh_sel, "config:29-31"); |
| PMU_FORMAT_ATTR(thresh_stop, "config:32-35"); |
| PMU_FORMAT_ATTR(thresh_start, "config:36-39"); |
| PMU_FORMAT_ATTR(l2l3_sel, "config:40-44"); |
| PMU_FORMAT_ATTR(src_sel, "config:45-46"); |
| PMU_FORMAT_ATTR(invert_bit, "config:47"); |
| PMU_FORMAT_ATTR(src_mask, "config:48-53"); |
| PMU_FORMAT_ATTR(src_match, "config:54-59"); |
| PMU_FORMAT_ATTR(radix_scope, "config:9"); |
| |
| static struct attribute *power10_pmu_format_attr[] = { |
| &format_attr_event.attr, |
| &format_attr_pmcxsel.attr, |
| &format_attr_mark.attr, |
| &format_attr_combine.attr, |
| &format_attr_unit.attr, |
| &format_attr_pmc.attr, |
| &format_attr_cache_sel.attr, |
| &format_attr_sdar_mode.attr, |
| &format_attr_sample_mode.attr, |
| &format_attr_thresh_sel.attr, |
| &format_attr_thresh_stop.attr, |
| &format_attr_thresh_start.attr, |
| &format_attr_l2l3_sel.attr, |
| &format_attr_src_sel.attr, |
| &format_attr_invert_bit.attr, |
| &format_attr_src_mask.attr, |
| &format_attr_src_match.attr, |
| &format_attr_radix_scope.attr, |
| NULL, |
| }; |
| |
| static struct attribute_group power10_pmu_format_group = { |
| .name = "format", |
| .attrs = power10_pmu_format_attr, |
| }; |
| |
| static const struct attribute_group *power10_pmu_attr_groups[] = { |
| &power10_pmu_format_group, |
| &power10_pmu_events_group, |
| NULL, |
| }; |
| |
| static int power10_generic_events[] = { |
| [PERF_COUNT_HW_CPU_CYCLES] = PM_RUN_CYC, |
| [PERF_COUNT_HW_INSTRUCTIONS] = PM_RUN_INST_CMPL, |
| [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = PM_BR_CMPL, |
| [PERF_COUNT_HW_BRANCH_MISSES] = PM_BR_MPRED_CMPL, |
| [PERF_COUNT_HW_CACHE_REFERENCES] = PM_LD_REF_L1, |
| [PERF_COUNT_HW_CACHE_MISSES] = PM_LD_MISS_L1, |
| }; |
| |
| static u64 power10_bhrb_filter_map(u64 branch_sample_type) |
| { |
| u64 pmu_bhrb_filter = 0; |
| |
| /* BHRB and regular PMU events share the same privilege state |
| * filter configuration. BHRB is always recorded along with a |
| * regular PMU event. As the privilege state filter is handled |
| * in the basic PMC configuration of the accompanying regular |
| * PMU event, we ignore any separate BHRB specific request. |
| */ |
| |
| /* No branch filter requested */ |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY) |
| return pmu_bhrb_filter; |
| |
| /* Invalid branch filter options - HW does not support */ |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_RETURN) |
| return -1; |
| |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_IND_CALL) { |
| pmu_bhrb_filter |= POWER10_MMCRA_IFM2; |
| return pmu_bhrb_filter; |
| } |
| |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_COND) { |
| pmu_bhrb_filter |= POWER10_MMCRA_IFM3; |
| return pmu_bhrb_filter; |
| } |
| |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_CALL) |
| return -1; |
| |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_CALL) { |
| pmu_bhrb_filter |= POWER10_MMCRA_IFM1; |
| return pmu_bhrb_filter; |
| } |
| |
| /* Every thing else is unsupported */ |
| return -1; |
| } |
| |
| static void power10_config_bhrb(u64 pmu_bhrb_filter) |
| { |
| pmu_bhrb_filter &= POWER10_MMCRA_BHRB_MASK; |
| |
| /* Enable BHRB filter in PMU */ |
| mtspr(SPRN_MMCRA, (mfspr(SPRN_MMCRA) | pmu_bhrb_filter)); |
| } |
| |
| #define C(x) PERF_COUNT_HW_CACHE_##x |
| |
| /* |
| * Table of generalized cache-related events. |
| * 0 means not supported, -1 means nonsensical, other values |
| * are event codes. |
| */ |
| static u64 power10_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { |
| [C(L1D)] = { |
| [C(OP_READ)] = { |
| [C(RESULT_ACCESS)] = PM_LD_REF_L1, |
| [C(RESULT_MISS)] = PM_LD_MISS_L1, |
| }, |
| [C(OP_WRITE)] = { |
| [C(RESULT_ACCESS)] = 0, |
| [C(RESULT_MISS)] = PM_ST_MISS_L1, |
| }, |
| [C(OP_PREFETCH)] = { |
| [C(RESULT_ACCESS)] = PM_LD_PREFETCH_CACHE_LINE_MISS, |
| [C(RESULT_MISS)] = 0, |
| }, |
| }, |
| [C(L1I)] = { |
| [C(OP_READ)] = { |
| [C(RESULT_ACCESS)] = PM_INST_FROM_L1, |
| [C(RESULT_MISS)] = PM_L1_ICACHE_MISS, |
| }, |
| [C(OP_WRITE)] = { |
| [C(RESULT_ACCESS)] = PM_INST_FROM_L1MISS, |
| [C(RESULT_MISS)] = -1, |
| }, |
| [C(OP_PREFETCH)] = { |
| [C(RESULT_ACCESS)] = PM_IC_PREF_REQ, |
| [C(RESULT_MISS)] = 0, |
| }, |
| }, |
| [C(LL)] = { |
| [C(OP_READ)] = { |
| [C(RESULT_ACCESS)] = PM_DATA_FROM_L3, |
| [C(RESULT_MISS)] = PM_DATA_FROM_L3MISS, |
| }, |
| [C(OP_WRITE)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| [C(OP_PREFETCH)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = 0, |
| }, |
| }, |
| [C(DTLB)] = { |
| [C(OP_READ)] = { |
| [C(RESULT_ACCESS)] = 0, |
| [C(RESULT_MISS)] = PM_DTLB_MISS, |
| }, |
| [C(OP_WRITE)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| [C(OP_PREFETCH)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| }, |
| [C(ITLB)] = { |
| [C(OP_READ)] = { |
| [C(RESULT_ACCESS)] = 0, |
| [C(RESULT_MISS)] = PM_ITLB_MISS, |
| }, |
| [C(OP_WRITE)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| [C(OP_PREFETCH)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| }, |
| [C(BPU)] = { |
| [C(OP_READ)] = { |
| [C(RESULT_ACCESS)] = PM_BR_CMPL, |
| [C(RESULT_MISS)] = PM_BR_MPRED_CMPL, |
| }, |
| [C(OP_WRITE)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| [C(OP_PREFETCH)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| }, |
| [C(NODE)] = { |
| [C(OP_READ)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| [C(OP_WRITE)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| [C(OP_PREFETCH)] = { |
| [C(RESULT_ACCESS)] = -1, |
| [C(RESULT_MISS)] = -1, |
| }, |
| }, |
| }; |
| |
| #undef C |
| |
| static struct power_pmu power10_pmu = { |
| .name = "POWER10", |
| .n_counter = MAX_PMU_COUNTERS, |
| .add_fields = ISA207_ADD_FIELDS, |
| .test_adder = ISA207_TEST_ADDER, |
| .group_constraint_mask = CNST_CACHE_PMC4_MASK, |
| .group_constraint_val = CNST_CACHE_PMC4_VAL, |
| .compute_mmcr = isa207_compute_mmcr, |
| .config_bhrb = power10_config_bhrb, |
| .bhrb_filter_map = power10_bhrb_filter_map, |
| .get_constraint = isa207_get_constraint, |
| .get_alternatives = power10_get_alternatives, |
| .get_mem_data_src = isa207_get_mem_data_src, |
| .get_mem_weight = isa207_get_mem_weight, |
| .disable_pmc = isa207_disable_pmc, |
| .flags = PPMU_HAS_SIER | PPMU_ARCH_207S | |
| PPMU_ARCH_31, |
| .n_generic = ARRAY_SIZE(power10_generic_events), |
| .generic_events = power10_generic_events, |
| .cache_events = &power10_cache_events, |
| .attr_groups = power10_pmu_attr_groups, |
| .bhrb_nr = 32, |
| .capabilities = PERF_PMU_CAP_EXTENDED_REGS, |
| }; |
| |
| int init_power10_pmu(void) |
| { |
| int rc; |
| |
| /* Comes from cpu_specs[] */ |
| if (!cur_cpu_spec->oprofile_cpu_type || |
| strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power10")) |
| return -ENODEV; |
| |
| /* Set the PERF_REG_EXTENDED_MASK here */ |
| PERF_REG_EXTENDED_MASK = PERF_REG_PMU_MASK_31; |
| |
| rc = register_power_pmu(&power10_pmu); |
| if (rc) |
| return rc; |
| |
| /* Tell userspace that EBB is supported */ |
| cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_EBB; |
| |
| return 0; |
| } |
