1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * arm_spe_decoder.h: Arm Statistical Profiling Extensions support 4 * Copyright (c) 2019-2020, Arm Ltd. 5 */ 6 7 #ifndef INCLUDE__ARM_SPE_DECODER_H__ 8 #define INCLUDE__ARM_SPE_DECODER_H__ 9 10 #include <stdbool.h> 11 #include <stddef.h> 12 #include <stdint.h> 13 14 #include "arm-spe-pkt-decoder.h" 15 16 enum arm_spe_events { 17 EV_EXCEPTION_GEN = 0, 18 EV_RETIRED = 1, 19 EV_L1D_ACCESS = 2, 20 EV_L1D_REFILL = 3, 21 EV_TLB_ACCESS = 4, 22 EV_TLB_WALK = 5, 23 EV_NOT_TAKEN = 6, 24 EV_MISPRED = 7, 25 EV_LLC_ACCESS = 8, 26 EV_LLC_MISS = 9, 27 EV_REMOTE_ACCESS = 10, 28 EV_ALIGNMENT = 11, 29 EV_PARTIAL_PREDICATE = 17, 30 EV_EMPTY_PREDICATE = 18, 31 }; 32 33 enum arm_spe_sample_type { 34 ARM_SPE_L1D_ACCESS = 1 << 0, 35 ARM_SPE_L1D_MISS = 1 << 1, 36 ARM_SPE_LLC_ACCESS = 1 << 2, 37 ARM_SPE_LLC_MISS = 1 << 3, 38 ARM_SPE_TLB_ACCESS = 1 << 4, 39 ARM_SPE_TLB_MISS = 1 << 5, 40 ARM_SPE_BRANCH_MISS = 1 << 6, 41 ARM_SPE_REMOTE_ACCESS = 1 << 7, 42 }; 43 44 struct arm_spe_record { 45 enum arm_spe_sample_type type; 46 int err; 47 u64 from_ip; 48 u64 to_ip; 49 u64 timestamp; 50 }; 51 52 struct arm_spe_insn; 53 54 struct arm_spe_buffer { 55 const unsigned char *buf; 56 size_t len; 57 u64 offset; 58 u64 trace_nr; 59 }; 60 61 struct arm_spe_params { 62 int (*get_trace)(struct arm_spe_buffer *buffer, void *data); 63 void *data; 64 }; 65 66 struct arm_spe_decoder { 67 int (*get_trace)(struct arm_spe_buffer *buffer, void *data); 68 void *data; 69 struct arm_spe_record record; 70 71 const unsigned char *buf; 72 size_t len; 73 74 struct arm_spe_pkt packet; 75 }; 76 77 struct arm_spe_decoder *arm_spe_decoder_new(struct arm_spe_params *params); 78 void arm_spe_decoder_free(struct arm_spe_decoder *decoder); 79 80 int arm_spe_decode(struct arm_spe_decoder *decoder); 81 82 #endif 83