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_sample_type { 17 ARM_SPE_L1D_ACCESS = 1 << 0, 18 ARM_SPE_L1D_MISS = 1 << 1, 19 ARM_SPE_LLC_ACCESS = 1 << 2, 20 ARM_SPE_LLC_MISS = 1 << 3, 21 ARM_SPE_TLB_ACCESS = 1 << 4, 22 ARM_SPE_TLB_MISS = 1 << 5, 23 ARM_SPE_BRANCH_MISS = 1 << 6, 24 ARM_SPE_REMOTE_ACCESS = 1 << 7, 25 ARM_SPE_SVE_PARTIAL_PRED = 1 << 8, 26 ARM_SPE_SVE_EMPTY_PRED = 1 << 9, 27 }; 28 29 enum arm_spe_op_type { 30 /* First level operation type */ 31 ARM_SPE_OP_OTHER = 1 << 0, 32 ARM_SPE_OP_LDST = 1 << 1, 33 ARM_SPE_OP_BRANCH_ERET = 1 << 2, 34 35 /* Second level operation type for OTHER */ 36 ARM_SPE_OP_SVE_OTHER = 1 << 16, 37 ARM_SPE_OP_SVE_FP = 1 << 17, 38 ARM_SPE_OP_SVE_PRED_OTHER = 1 << 18, 39 40 /* Second level operation type for LDST */ 41 ARM_SPE_OP_LD = 1 << 16, 42 ARM_SPE_OP_ST = 1 << 17, 43 ARM_SPE_OP_ATOMIC = 1 << 18, 44 ARM_SPE_OP_EXCL = 1 << 19, 45 ARM_SPE_OP_AR = 1 << 20, 46 ARM_SPE_OP_SIMD_FP = 1 << 21, 47 ARM_SPE_OP_GP_REG = 1 << 22, 48 ARM_SPE_OP_UNSPEC_REG = 1 << 23, 49 ARM_SPE_OP_NV_SYSREG = 1 << 24, 50 ARM_SPE_OP_SVE_LDST = 1 << 25, 51 ARM_SPE_OP_SVE_PRED_LDST = 1 << 26, 52 ARM_SPE_OP_SVE_SG = 1 << 27, 53 54 /* Second level operation type for BRANCH_ERET */ 55 ARM_SPE_OP_BR_COND = 1 << 16, 56 ARM_SPE_OP_BR_INDIRECT = 1 << 17, 57 }; 58 59 enum arm_spe_neoverse_data_source { 60 ARM_SPE_NV_L1D = 0x0, 61 ARM_SPE_NV_L2 = 0x8, 62 ARM_SPE_NV_PEER_CORE = 0x9, 63 ARM_SPE_NV_LOCAL_CLUSTER = 0xa, 64 ARM_SPE_NV_SYS_CACHE = 0xb, 65 ARM_SPE_NV_PEER_CLUSTER = 0xc, 66 ARM_SPE_NV_REMOTE = 0xd, 67 ARM_SPE_NV_DRAM = 0xe, 68 }; 69 70 struct arm_spe_record { 71 enum arm_spe_sample_type type; 72 int err; 73 u32 op; 74 u32 latency; 75 u64 from_ip; 76 u64 to_ip; 77 u64 timestamp; 78 u64 virt_addr; 79 u64 phys_addr; 80 u64 context_id; 81 u16 source; 82 }; 83 84 struct arm_spe_insn; 85 86 struct arm_spe_buffer { 87 const unsigned char *buf; 88 size_t len; 89 u64 offset; 90 u64 trace_nr; 91 }; 92 93 struct arm_spe_params { 94 int (*get_trace)(struct arm_spe_buffer *buffer, void *data); 95 void *data; 96 }; 97 98 struct arm_spe_decoder { 99 int (*get_trace)(struct arm_spe_buffer *buffer, void *data); 100 void *data; 101 struct arm_spe_record record; 102 103 const unsigned char *buf; 104 size_t len; 105 106 struct arm_spe_pkt packet; 107 }; 108 109 struct arm_spe_decoder *arm_spe_decoder_new(struct arm_spe_params *params); 110 void arm_spe_decoder_free(struct arm_spe_decoder *decoder); 111 112 int arm_spe_decode(struct arm_spe_decoder *decoder); 113 114 #endif 115