mirror of https://gitee.com/openkylin/linux.git
387 lines
13 KiB
C
387 lines
13 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2008-2018 Andes Technology Corporation */
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#ifndef __ASM_PMU_H
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#define __ASM_PMU_H
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#include <linux/interrupt.h>
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#include <linux/perf_event.h>
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#include <asm/unistd.h>
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#include <asm/bitfield.h>
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/* Has special meaning for perf core implementation */
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#define HW_OP_UNSUPPORTED 0x0
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#define C(_x) PERF_COUNT_HW_CACHE_##_x
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#define CACHE_OP_UNSUPPORTED 0x0
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/* Enough for both software and hardware defined events */
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#define SOFTWARE_EVENT_MASK 0xFF
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#define PFM_OFFSET_MAGIC_0 2 /* DO NOT START FROM 0 */
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#define PFM_OFFSET_MAGIC_1 (PFM_OFFSET_MAGIC_0 + 36)
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#define PFM_OFFSET_MAGIC_2 (PFM_OFFSET_MAGIC_1 + 36)
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enum { PFMC0, PFMC1, PFMC2, MAX_COUNTERS };
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u32 PFM_CTL_OVF[3] = { PFM_CTL_mskOVF0, PFM_CTL_mskOVF1,
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PFM_CTL_mskOVF2 };
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u32 PFM_CTL_EN[3] = { PFM_CTL_mskEN0, PFM_CTL_mskEN1,
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PFM_CTL_mskEN2 };
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u32 PFM_CTL_OFFSEL[3] = { PFM_CTL_offSEL0, PFM_CTL_offSEL1,
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PFM_CTL_offSEL2 };
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u32 PFM_CTL_IE[3] = { PFM_CTL_mskIE0, PFM_CTL_mskIE1, PFM_CTL_mskIE2 };
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u32 PFM_CTL_KS[3] = { PFM_CTL_mskKS0, PFM_CTL_mskKS1, PFM_CTL_mskKS2 };
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u32 PFM_CTL_KU[3] = { PFM_CTL_mskKU0, PFM_CTL_mskKU1, PFM_CTL_mskKU2 };
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u32 PFM_CTL_SEL[3] = { PFM_CTL_mskSEL0, PFM_CTL_mskSEL1, PFM_CTL_mskSEL2 };
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/*
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* Perf Events' indices
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*/
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#define NDS32_IDX_CYCLE_COUNTER 0
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#define NDS32_IDX_COUNTER0 1
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#define NDS32_IDX_COUNTER1 2
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/* The events for a given PMU register set. */
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struct pmu_hw_events {
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/*
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* The events that are active on the PMU for the given index.
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*/
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struct perf_event *events[MAX_COUNTERS];
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/*
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* A 1 bit for an index indicates that the counter is being used for
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* an event. A 0 means that the counter can be used.
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*/
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unsigned long used_mask[BITS_TO_LONGS(MAX_COUNTERS)];
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/*
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* Hardware lock to serialize accesses to PMU registers. Needed for the
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* read/modify/write sequences.
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*/
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raw_spinlock_t pmu_lock;
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};
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struct nds32_pmu {
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struct pmu pmu;
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cpumask_t active_irqs;
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char *name;
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irqreturn_t (*handle_irq)(int irq_num, void *dev);
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void (*enable)(struct perf_event *event);
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void (*disable)(struct perf_event *event);
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int (*get_event_idx)(struct pmu_hw_events *hw_events,
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struct perf_event *event);
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int (*set_event_filter)(struct hw_perf_event *evt,
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struct perf_event_attr *attr);
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u32 (*read_counter)(struct perf_event *event);
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void (*write_counter)(struct perf_event *event, u32 val);
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void (*start)(struct nds32_pmu *nds32_pmu);
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void (*stop)(struct nds32_pmu *nds32_pmu);
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void (*reset)(void *data);
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int (*request_irq)(struct nds32_pmu *nds32_pmu, irq_handler_t handler);
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void (*free_irq)(struct nds32_pmu *nds32_pmu);
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int (*map_event)(struct perf_event *event);
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int num_events;
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atomic_t active_events;
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u64 max_period;
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struct platform_device *plat_device;
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struct pmu_hw_events *(*get_hw_events)(void);
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};
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#define to_nds32_pmu(p) (container_of(p, struct nds32_pmu, pmu))
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int nds32_pmu_register(struct nds32_pmu *nds32_pmu, int type);
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u64 nds32_pmu_event_update(struct perf_event *event);
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int nds32_pmu_event_set_period(struct perf_event *event);
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/*
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* Common NDS32 SPAv3 event types
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*
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* Note: An implementation may not be able to count all of these events
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* but the encodings are considered to be `reserved' in the case that
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* they are not available.
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*
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* SEL_TOTAL_CYCLES will add an offset is due to ZERO is defined as
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* NOT_SUPPORTED EVENT mapping in generic perf code.
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* You will need to deal it in the event writing implementation.
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*/
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enum spav3_counter_0_perf_types {
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SPAV3_0_SEL_BASE = -1 + PFM_OFFSET_MAGIC_0, /* counting symbol */
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SPAV3_0_SEL_TOTAL_CYCLES = 0 + PFM_OFFSET_MAGIC_0,
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SPAV3_0_SEL_COMPLETED_INSTRUCTION = 1 + PFM_OFFSET_MAGIC_0,
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SPAV3_0_SEL_LAST /* counting symbol */
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};
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enum spav3_counter_1_perf_types {
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SPAV3_1_SEL_BASE = -1 + PFM_OFFSET_MAGIC_1, /* counting symbol */
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SPAV3_1_SEL_TOTAL_CYCLES = 0 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_COMPLETED_INSTRUCTION = 1 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_CONDITIONAL_BRANCH = 2 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_TAKEN_CONDITIONAL_BRANCH = 3 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_PREFETCH_INSTRUCTION = 4 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_RET_INST = 5 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_JR_INST = 6 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_JAL_JRAL_INST = 7 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_NOP_INST = 8 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_SCW_INST = 9 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_ISB_DSB_INST = 10 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_CCTL_INST = 11 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_TAKEN_INTERRUPTS = 12 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_LOADS_COMPLETED = 13 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_UITLB_ACCESS = 14 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_UDTLB_ACCESS = 15 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_MTLB_ACCESS = 16 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_CODE_CACHE_ACCESS = 17 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_DATA_DEPENDENCY_STALL_CYCLES = 18 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_DATA_CACHE_MISS_STALL_CYCLES = 19 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_DATA_CACHE_ACCESS = 20 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_DATA_CACHE_MISS = 21 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_LOAD_DATA_CACHE_ACCESS = 22 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_STORE_DATA_CACHE_ACCESS = 23 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_ILM_ACCESS = 24 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_LSU_BIU_CYCLES = 25 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_HPTWK_BIU_CYCLES = 26 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_DMA_BIU_CYCLES = 27 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_CODE_CACHE_FILL_BIU_CYCLES = 28 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_LEGAL_UNALIGN_DCACHE_ACCESS = 29 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_PUSH25 = 30 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_SYSCALLS_INST = 31 + PFM_OFFSET_MAGIC_1,
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SPAV3_1_SEL_LAST /* counting symbol */
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};
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enum spav3_counter_2_perf_types {
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SPAV3_2_SEL_BASE = -1 + PFM_OFFSET_MAGIC_2, /* counting symbol */
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SPAV3_2_SEL_TOTAL_CYCLES = 0 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_COMPLETED_INSTRUCTION = 1 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_CONDITIONAL_BRANCH_MISPREDICT = 2 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_TAKEN_CONDITIONAL_BRANCH_MISPREDICT =
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3 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_PREFETCH_INSTRUCTION_CACHE_HIT = 4 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_RET_MISPREDICT = 5 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_IMMEDIATE_J_INST = 6 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_MULTIPLY_INST = 7 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_16_BIT_INST = 8 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_FAILED_SCW_INST = 9 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_LD_AFTER_ST_CONFLICT_REPLAYS = 10 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_TAKEN_EXCEPTIONS = 12 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_STORES_COMPLETED = 13 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_UITLB_MISS = 14 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_UDTLB_MISS = 15 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_MTLB_MISS = 16 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_CODE_CACHE_MISS = 17 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_EMPTY_INST_QUEUE_STALL_CYCLES = 18 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_DATA_WRITE_BACK = 19 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_DATA_CACHE_MISS = 21 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_LOAD_DATA_CACHE_MISS = 22 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_STORE_DATA_CACHE_MISS = 23 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_DLM_ACCESS = 24 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_LSU_BIU_REQUEST = 25 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_HPTWK_BIU_REQUEST = 26 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_DMA_BIU_REQUEST = 27 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_CODE_CACHE_FILL_BIU_REQUEST = 28 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_EXTERNAL_EVENTS = 29 + PFM_OFFSET_MAGIC_2,
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SPAV3_1_SEL_POP25 = 30 + PFM_OFFSET_MAGIC_2,
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SPAV3_2_SEL_LAST /* counting symbol */
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};
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/* Get converted event counter index */
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static inline int get_converted_event_idx(unsigned long event)
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{
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int idx;
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if ((event) > SPAV3_0_SEL_BASE && event < SPAV3_0_SEL_LAST) {
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idx = 0;
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} else if ((event) > SPAV3_1_SEL_BASE && event < SPAV3_1_SEL_LAST) {
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idx = 1;
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} else if ((event) > SPAV3_2_SEL_BASE && event < SPAV3_2_SEL_LAST) {
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idx = 2;
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} else {
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pr_err("GET_CONVERTED_EVENT_IDX PFM counter range error\n");
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return -EPERM;
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}
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return idx;
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}
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/* Get converted hardware event number */
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static inline u32 get_converted_evet_hw_num(u32 event)
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{
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if (event > SPAV3_0_SEL_BASE && event < SPAV3_0_SEL_LAST)
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event -= PFM_OFFSET_MAGIC_0;
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else if (event > SPAV3_1_SEL_BASE && event < SPAV3_1_SEL_LAST)
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event -= PFM_OFFSET_MAGIC_1;
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else if (event > SPAV3_2_SEL_BASE && event < SPAV3_2_SEL_LAST)
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event -= PFM_OFFSET_MAGIC_2;
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else if (event != 0)
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pr_err("GET_CONVERTED_EVENT_HW_NUM PFM counter range error\n");
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return event;
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}
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/*
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* NDS32 HW events mapping
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*
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* The hardware events that we support. We do support cache operations but
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* we have harvard caches and no way to combine instruction and data
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* accesses/misses in hardware.
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*/
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static const unsigned int nds32_pfm_perf_map[PERF_COUNT_HW_MAX] = {
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[PERF_COUNT_HW_CPU_CYCLES] = SPAV3_0_SEL_TOTAL_CYCLES,
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[PERF_COUNT_HW_INSTRUCTIONS] = SPAV3_1_SEL_COMPLETED_INSTRUCTION,
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[PERF_COUNT_HW_CACHE_REFERENCES] = SPAV3_1_SEL_DATA_CACHE_ACCESS,
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[PERF_COUNT_HW_CACHE_MISSES] = SPAV3_2_SEL_DATA_CACHE_MISS,
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[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = HW_OP_UNSUPPORTED,
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[PERF_COUNT_HW_BRANCH_MISSES] = HW_OP_UNSUPPORTED,
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[PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
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[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = HW_OP_UNSUPPORTED,
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[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = HW_OP_UNSUPPORTED,
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[PERF_COUNT_HW_REF_CPU_CYCLES] = HW_OP_UNSUPPORTED
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};
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static const unsigned int nds32_pfm_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
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[PERF_COUNT_HW_CACHE_OP_MAX]
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[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
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[C(L1D)] = {
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[C(OP_READ)] = {
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[C(RESULT_ACCESS)] =
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SPAV3_1_SEL_LOAD_DATA_CACHE_ACCESS,
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[C(RESULT_MISS)] =
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SPAV3_2_SEL_LOAD_DATA_CACHE_MISS,
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},
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[C(OP_WRITE)] = {
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[C(RESULT_ACCESS)] =
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SPAV3_1_SEL_STORE_DATA_CACHE_ACCESS,
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[C(RESULT_MISS)] =
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SPAV3_2_SEL_STORE_DATA_CACHE_MISS,
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},
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[C(OP_PREFETCH)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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},
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[C(L1I)] = {
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[C(OP_READ)] = {
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[C(RESULT_ACCESS)] =
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SPAV3_1_SEL_CODE_CACHE_ACCESS,
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[C(RESULT_MISS)] =
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SPAV3_2_SEL_CODE_CACHE_MISS,
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},
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[C(OP_WRITE)] = {
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[C(RESULT_ACCESS)] =
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SPAV3_1_SEL_CODE_CACHE_ACCESS,
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[C(RESULT_MISS)] =
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SPAV3_2_SEL_CODE_CACHE_MISS,
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},
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[C(OP_PREFETCH)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
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},
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},
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/* TODO: L2CC */
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[C(LL)] = {
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[C(OP_READ)] = {
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[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
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},
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[C(OP_WRITE)] = {
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[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
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},
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[C(OP_PREFETCH)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
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},
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},
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/* NDS32 PMU does not support TLB read/write hit/miss,
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* However, it can count access/miss, which mixed with read and write.
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* Therefore, only READ counter will use it.
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* We do as possible as we can.
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*/
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[C(DTLB)] = {
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[C(OP_READ)] = {
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[C(RESULT_ACCESS)] =
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SPAV3_1_SEL_UDTLB_ACCESS,
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[C(RESULT_MISS)] =
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SPAV3_2_SEL_UDTLB_MISS,
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},
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[C(OP_WRITE)] = {
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[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
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},
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[C(OP_PREFETCH)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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},
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[C(ITLB)] = {
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[C(OP_READ)] = {
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[C(RESULT_ACCESS)] =
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SPAV3_1_SEL_UITLB_ACCESS,
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[C(RESULT_MISS)] =
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SPAV3_2_SEL_UITLB_MISS,
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},
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[C(OP_WRITE)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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[C(OP_PREFETCH)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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},
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[C(BPU)] = { /* What is BPU? */
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[C(OP_READ)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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[C(OP_WRITE)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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[C(OP_PREFETCH)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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},
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[C(NODE)] = { /* What is NODE? */
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[C(OP_READ)] = {
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[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
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},
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[C(OP_WRITE)] = {
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[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
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},
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[C(OP_PREFETCH)] = {
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[C(RESULT_ACCESS)] =
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CACHE_OP_UNSUPPORTED,
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[C(RESULT_MISS)] =
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CACHE_OP_UNSUPPORTED,
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},
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},
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};
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int nds32_pmu_map_event(struct perf_event *event,
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const unsigned int (*event_map)[PERF_COUNT_HW_MAX],
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const unsigned int (*cache_map)[PERF_COUNT_HW_CACHE_MAX]
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[PERF_COUNT_HW_CACHE_OP_MAX]
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[PERF_COUNT_HW_CACHE_RESULT_MAX], u32 raw_event_mask);
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#endif /* __ASM_PMU_H */
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