diff options
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/perf_event_mipsxx.c | 103 |
1 files changed, 102 insertions, 1 deletions
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c index cb213089ed2b..a9b995dcf691 100644 --- a/arch/mips/kernel/perf_event_mipsxx.c +++ b/arch/mips/kernel/perf_event_mipsxx.c @@ -28,6 +28,8 @@ #include <asm/time.h> /* For perf_irq */ #define MIPS_MAX_HWEVENTS 4 +#define MIPS_TCS_PER_COUNTER 2 +#define MIPS_CPUID_TO_COUNTER_MASK (MIPS_TCS_PER_COUNTER - 1) struct cpu_hw_events { /* Array of events on this cpu. */ @@ -108,13 +110,20 @@ static struct mips_pmu mipspmu; #define M_PERFCTL_INTERRUPT_ENABLE (1 << 4) #define M_PERFCTL_EVENT(event) (((event) & 0x3ff) << 5) #define M_PERFCTL_VPEID(vpe) ((vpe) << 16) + +#ifdef CONFIG_CPU_BMIPS5000 +#define M_PERFCTL_MT_EN(filter) 0 +#else /* !CONFIG_CPU_BMIPS5000 */ #define M_PERFCTL_MT_EN(filter) ((filter) << 20) +#endif /* CONFIG_CPU_BMIPS5000 */ + #define M_TC_EN_ALL M_PERFCTL_MT_EN(0) #define M_TC_EN_VPE M_PERFCTL_MT_EN(1) #define M_TC_EN_TC M_PERFCTL_MT_EN(2) #define M_PERFCTL_TCID(tcid) ((tcid) << 22) #define M_PERFCTL_WIDE (1 << 30) #define M_PERFCTL_MORE (1 << 31) +#define M_PERFCTL_TC (1 << 30) #define M_PERFCTL_COUNT_EVENT_WHENEVER (M_PERFCTL_EXL | \ M_PERFCTL_KERNEL | \ @@ -135,12 +144,17 @@ static int cpu_has_mipsmt_pertccounters; static DEFINE_RWLOCK(pmuint_rwlock); +#if defined(CONFIG_CPU_BMIPS5000) +#define vpe_id() (cpu_has_mipsmt_pertccounters ? \ + 0 : (smp_processor_id() & MIPS_CPUID_TO_COUNTER_MASK)) +#else /* * FIXME: For VSMP, vpe_id() is redefined for Perf-events, because * cpu_data[cpuid].vpe_id reports 0 for _both_ CPUs. */ #define vpe_id() (cpu_has_mipsmt_pertccounters ? \ - 0 : smp_processor_id()) + 0 : smp_processor_id()) +#endif /* Copied from op_model_mipsxx.c */ static unsigned int vpe_shift(void) @@ -334,6 +348,11 @@ static void mipsxx_pmu_enable_event(struct hw_perf_event *evt, int idx) (evt->config_base & M_PERFCTL_CONFIG_MASK) | /* Make sure interrupt enabled. */ M_PERFCTL_INTERRUPT_ENABLE; + if (IS_ENABLED(CONFIG_CPU_BMIPS5000)) + /* enable the counter for the calling thread */ + cpuc->saved_ctrl[idx] |= + (1 << (12 + vpe_id())) | M_PERFCTL_TC; + /* * We do not actually let the counter run. Leave it until start(). */ @@ -814,6 +833,13 @@ static const struct mips_perf_event octeon_event_map[PERF_COUNT_HW_MAX] = { [PERF_COUNT_HW_BUS_CYCLES] = { 0x25, CNTR_ALL }, }; +static const struct mips_perf_event bmips5000_event_map + [PERF_COUNT_HW_MAX] = { + [PERF_COUNT_HW_CPU_CYCLES] = { 0x00, CNTR_EVEN | CNTR_ODD, T }, + [PERF_COUNT_HW_INSTRUCTIONS] = { 0x01, CNTR_EVEN | CNTR_ODD, T }, + [PERF_COUNT_HW_BRANCH_MISSES] = { 0x02, CNTR_ODD, T }, +}; + /* 24K/34K/1004K cores can share the same cache event map. */ static const struct mips_perf_event mipsxxcore_cache_map [PERF_COUNT_HW_CACHE_MAX] @@ -966,6 +992,65 @@ static const struct mips_perf_event mipsxx74Kcore_cache_map }, }; +/* BMIPS5000 */ +static const struct mips_perf_event bmips5000_cache_map + [PERF_COUNT_HW_CACHE_MAX] + [PERF_COUNT_HW_CACHE_OP_MAX] + [PERF_COUNT_HW_CACHE_RESULT_MAX] = { +[C(L1D)] = { + /* + * Like some other architectures (e.g. ARM), the performance + * counters don't differentiate between read and write + * accesses/misses, so this isn't strictly correct, but it's the + * best we can do. Writes and reads get combined. + */ + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = { 12, CNTR_EVEN, T }, + [C(RESULT_MISS)] = { 12, CNTR_ODD, T }, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = { 12, CNTR_EVEN, T }, + [C(RESULT_MISS)] = { 12, CNTR_ODD, T }, + }, +}, +[C(L1I)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = { 10, CNTR_EVEN, T }, + [C(RESULT_MISS)] = { 10, CNTR_ODD, T }, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = { 10, CNTR_EVEN, T }, + [C(RESULT_MISS)] = { 10, CNTR_ODD, T }, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = { 23, CNTR_EVEN, T }, + /* + * Note that MIPS has only "hit" events countable for + * the prefetch operation. + */ + }, +}, +[C(LL)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = { 28, CNTR_EVEN, P }, + [C(RESULT_MISS)] = { 28, CNTR_ODD, P }, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = { 28, CNTR_EVEN, P }, + [C(RESULT_MISS)] = { 28, CNTR_ODD, P }, + }, +}, +[C(BPU)] = { + /* Using the same code for *HW_BRANCH* */ + [C(OP_READ)] = { + [C(RESULT_MISS)] = { 0x02, CNTR_ODD, T }, + }, + [C(OP_WRITE)] = { + [C(RESULT_MISS)] = { 0x02, CNTR_ODD, T }, + }, +}, +}; + static const struct mips_perf_event octeon_cache_map [PERF_COUNT_HW_CACHE_MAX] @@ -1240,6 +1325,11 @@ static irqreturn_t mipsxx_pmu_handle_irq(int irq, void *dev) #define IS_RANGE_V_1004K_EVENT(r) ((r) == 47) #endif +/* BMIPS5000 */ +#define IS_BOTH_COUNTERS_BMIPS5000_EVENT(b) \ + ((b) == 0 || (b) == 1) + + /* * User can use 0-255 raw events, where 0-127 for the events of even * counters, and 128-255 for odd counters. Note that bit 7 is used to @@ -1310,6 +1400,12 @@ static const struct mips_perf_event *mipsxx_pmu_map_raw_event(u64 config) raw_event.range = T; #endif break; + case CPU_BMIPS5000: + if (IS_BOTH_COUNTERS_BMIPS5000_EVENT(base_id)) + raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; + else + raw_event.cntr_mask = + raw_id > 127 ? CNTR_ODD : CNTR_EVEN; } return &raw_event; @@ -1421,6 +1517,11 @@ init_hw_perf_events(void) mipspmu.cache_event_map = &octeon_cache_map; mipspmu.map_raw_event = octeon_pmu_map_raw_event; break; + case CPU_BMIPS5000: + mipspmu.name = "BMIPS5000"; + mipspmu.general_event_map = &bmips5000_event_map; + mipspmu.cache_event_map = &bmips5000_cache_map; + break; default: pr_cont("Either hardware does not support performance " "counters, or not yet implemented.\n"); |