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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
16enum 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};
26
27enum arm_spe_op_type {
28 ARM_SPE_LD = 1 << 0,
29 ARM_SPE_ST = 1 << 1,
30};
31
32enum arm_spe_neoverse_data_source {
33 ARM_SPE_NV_L1D = 0x0,
34 ARM_SPE_NV_L2 = 0x8,
35 ARM_SPE_NV_PEER_CORE = 0x9,
36 ARM_SPE_NV_LOCAL_CLUSTER = 0xa,
37 ARM_SPE_NV_SYS_CACHE = 0xb,
38 ARM_SPE_NV_PEER_CLUSTER = 0xc,
39 ARM_SPE_NV_REMOTE = 0xd,
40 ARM_SPE_NV_DRAM = 0xe,
41};
42
43struct arm_spe_record {
44 enum arm_spe_sample_type type;
45 int err;
46 u32 op;
47 u32 latency;
48 u64 from_ip;
49 u64 to_ip;
50 u64 timestamp;
51 u64 virt_addr;
52 u64 phys_addr;
53 u64 context_id;
54 u16 source;
55};
56
57struct arm_spe_insn;
58
59struct arm_spe_buffer {
60 const unsigned char *buf;
61 size_t len;
62 u64 offset;
63 u64 trace_nr;
64};
65
66struct arm_spe_params {
67 int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
68 void *data;
69};
70
71struct arm_spe_decoder {
72 int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
73 void *data;
74 struct arm_spe_record record;
75
76 const unsigned char *buf;
77 size_t len;
78
79 struct arm_spe_pkt packet;
80};
81
82struct arm_spe_decoder *arm_spe_decoder_new(struct arm_spe_params *params);
83void arm_spe_decoder_free(struct arm_spe_decoder *decoder);
84
85int arm_spe_decode(struct arm_spe_decoder *decoder);
86
87#endif