| /* |
| * Performance counter support for POWER9 processors. |
| * |
| * Copyright 2009 Paul Mackerras, IBM Corporation. |
| * Copyright 2013 Michael Ellerman, IBM Corporation. |
| * Copyright 2016 Madhavan Srinivasan, IBM Corporation. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or later version. |
| */ |
| |
| #define pr_fmt(fmt) "power9-pmu: " fmt |
| |
| #include "isa207-common.h" |
| |
| /* |
| * Some power9 event codes. |
| */ |
| #define EVENT(_name, _code) _name = _code, |
| |
| enum { |
| #include "power9-events-list.h" |
| }; |
| |
| #undef EVENT |
| |
| /* MMCRA IFM bits - POWER9 */ |
| #define POWER9_MMCRA_IFM1 0x0000000040000000UL |
| #define POWER9_MMCRA_IFM2 0x0000000080000000UL |
| #define POWER9_MMCRA_IFM3 0x00000000C0000000UL |
| |
| GENERIC_EVENT_ATTR(cpu-cycles, PM_CYC); |
| GENERIC_EVENT_ATTR(stalled-cycles-frontend, PM_ICT_NOSLOT_CYC); |
| GENERIC_EVENT_ATTR(stalled-cycles-backend, PM_CMPLU_STALL); |
| GENERIC_EVENT_ATTR(instructions, PM_INST_CMPL); |
| GENERIC_EVENT_ATTR(branch-instructions, PM_BRU_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_FIN); |
| |
| CACHE_EVENT_ATTR(L1-dcache-load-misses, PM_LD_MISS_L1_FIN); |
| CACHE_EVENT_ATTR(L1-dcache-loads, PM_LD_REF_L1); |
| CACHE_EVENT_ATTR(L1-dcache-prefetches, PM_L1_PREF); |
| 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_WRITE); |
| CACHE_EVENT_ATTR(LLC-load-misses, PM_DATA_FROM_L3MISS); |
| CACHE_EVENT_ATTR(LLC-loads, PM_DATA_FROM_L3); |
| CACHE_EVENT_ATTR(LLC-prefetches, PM_L3_PREF_ALL); |
| CACHE_EVENT_ATTR(LLC-store-misses, PM_L2_ST_MISS); |
| CACHE_EVENT_ATTR(LLC-stores, PM_L2_ST); |
| CACHE_EVENT_ATTR(branch-load-misses, PM_BR_MPRED_CMPL); |
| CACHE_EVENT_ATTR(branch-loads, PM_BRU_CMPL); |
| CACHE_EVENT_ATTR(dTLB-load-misses, PM_DTLB_MISS); |
| CACHE_EVENT_ATTR(iTLB-load-misses, PM_ITLB_MISS); |
| |
| static struct attribute *power9_events_attr[] = { |
| GENERIC_EVENT_PTR(PM_CYC), |
| GENERIC_EVENT_PTR(PM_ICT_NOSLOT_CYC), |
| GENERIC_EVENT_PTR(PM_CMPLU_STALL), |
| GENERIC_EVENT_PTR(PM_INST_CMPL), |
| GENERIC_EVENT_PTR(PM_BRU_CMPL), |
| GENERIC_EVENT_PTR(PM_BR_MPRED_CMPL), |
| GENERIC_EVENT_PTR(PM_LD_REF_L1), |
| GENERIC_EVENT_PTR(PM_LD_MISS_L1_FIN), |
| CACHE_EVENT_PTR(PM_LD_MISS_L1_FIN), |
| CACHE_EVENT_PTR(PM_LD_REF_L1), |
| CACHE_EVENT_PTR(PM_L1_PREF), |
| 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_WRITE), |
| CACHE_EVENT_PTR(PM_DATA_FROM_L3MISS), |
| CACHE_EVENT_PTR(PM_DATA_FROM_L3), |
| CACHE_EVENT_PTR(PM_L3_PREF_ALL), |
| CACHE_EVENT_PTR(PM_L2_ST_MISS), |
| CACHE_EVENT_PTR(PM_L2_ST), |
| CACHE_EVENT_PTR(PM_BR_MPRED_CMPL), |
| CACHE_EVENT_PTR(PM_BRU_CMPL), |
| CACHE_EVENT_PTR(PM_DTLB_MISS), |
| CACHE_EVENT_PTR(PM_ITLB_MISS), |
| NULL |
| }; |
| |
| static struct attribute_group power9_pmu_events_group = { |
| .name = "events", |
| .attrs = power9_events_attr, |
| }; |
| |
| PMU_FORMAT_ATTR(event, "config:0-49"); |
| PMU_FORMAT_ATTR(pmcxsel, "config:0-7"); |
| PMU_FORMAT_ATTR(mark, "config:8"); |
| PMU_FORMAT_ATTR(combine, "config:11"); |
| PMU_FORMAT_ATTR(unit, "config:12-15"); |
| PMU_FORMAT_ATTR(pmc, "config:16-19"); |
| PMU_FORMAT_ATTR(cache_sel, "config:20-23"); |
| 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(thresh_cmp, "config:40-49"); |
| |
| static struct attribute *power9_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_sample_mode.attr, |
| &format_attr_thresh_sel.attr, |
| &format_attr_thresh_stop.attr, |
| &format_attr_thresh_start.attr, |
| &format_attr_thresh_cmp.attr, |
| NULL, |
| }; |
| |
| static struct attribute_group power9_pmu_format_group = { |
| .name = "format", |
| .attrs = power9_pmu_format_attr, |
| }; |
| |
| static const struct attribute_group *power9_pmu_attr_groups[] = { |
| &power9_pmu_format_group, |
| &power9_pmu_events_group, |
| NULL, |
| }; |
| |
| static int power9_generic_events[] = { |
| [PERF_COUNT_HW_CPU_CYCLES] = PM_CYC, |
| [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = PM_ICT_NOSLOT_CYC, |
| [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = PM_CMPLU_STALL, |
| [PERF_COUNT_HW_INSTRUCTIONS] = PM_INST_CMPL, |
| [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = PM_BRU_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_FIN, |
| }; |
| |
| static u64 power9_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) |
| return -1; |
| |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_CALL) |
| return -1; |
| |
| if (branch_sample_type & PERF_SAMPLE_BRANCH_ANY_CALL) { |
| pmu_bhrb_filter |= POWER9_MMCRA_IFM1; |
| return pmu_bhrb_filter; |
| } |
| |
| /* Every thing else is unsupported */ |
| return -1; |
| } |
| |
| static void power9_config_bhrb(u64 pmu_bhrb_filter) |
| { |
| /* 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 int power9_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_FIN, |
| }, |
| [ C(OP_WRITE) ] = { |
| [ C(RESULT_ACCESS) ] = 0, |
| [ C(RESULT_MISS) ] = PM_ST_MISS_L1, |
| }, |
| [ C(OP_PREFETCH) ] = { |
| [ C(RESULT_ACCESS) ] = PM_L1_PREF, |
| [ 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_L1_DEMAND_WRITE, |
| [ C(RESULT_MISS) ] = -1, |
| }, |
| [ C(OP_PREFETCH) ] = { |
| [ C(RESULT_ACCESS) ] = PM_IC_PREF_WRITE, |
| [ 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) ] = PM_L2_ST, |
| [ C(RESULT_MISS) ] = PM_L2_ST_MISS, |
| }, |
| [ C(OP_PREFETCH) ] = { |
| [ C(RESULT_ACCESS) ] = PM_L3_PREF_ALL, |
| [ 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_BRU_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 power9_pmu = { |
| .name = "POWER9", |
| .n_counter = MAX_PMU_COUNTERS, |
| .add_fields = ISA207_ADD_FIELDS, |
| .test_adder = ISA207_TEST_ADDER, |
| .compute_mmcr = isa207_compute_mmcr, |
| .config_bhrb = power9_config_bhrb, |
| .bhrb_filter_map = power9_bhrb_filter_map, |
| .get_constraint = isa207_get_constraint, |
| .disable_pmc = isa207_disable_pmc, |
| .flags = PPMU_HAS_SIER | PPMU_ARCH_207S, |
| .n_generic = ARRAY_SIZE(power9_generic_events), |
| .generic_events = power9_generic_events, |
| .cache_events = &power9_cache_events, |
| .attr_groups = power9_pmu_attr_groups, |
| .bhrb_nr = 32, |
| }; |
| |
| static int __init init_power9_pmu(void) |
| { |
| int rc; |
| |
| /* Comes from cpu_specs[] */ |
| if (!cur_cpu_spec->oprofile_cpu_type || |
| strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power9")) |
| return -ENODEV; |
| |
| rc = register_power_pmu(&power9_pmu); |
| if (rc) |
| return rc; |
| |
| /* Tell userspace that EBB is supported */ |
| cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_EBB; |
| |
| return 0; |
| } |
| early_initcall(init_power9_pmu); |
