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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
32struct arm_spe_record {
33 enum arm_spe_sample_type type;
34 int err;
35 u32 op;
36 u32 latency;
37 u64 from_ip;
38 u64 to_ip;
39 u64 timestamp;
40 u64 virt_addr;
41 u64 phys_addr;
42 u64 context_id;
43};
44
45struct arm_spe_insn;
46
47struct arm_spe_buffer {
48 const unsigned char *buf;
49 size_t len;
50 u64 offset;
51 u64 trace_nr;
52};
53
54struct arm_spe_params {
55 int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
56 void *data;
57};
58
59struct arm_spe_decoder {
60 int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
61 void *data;
62 struct arm_spe_record record;
63
64 const unsigned char *buf;
65 size_t len;
66
67 struct arm_spe_pkt packet;
68};
69
70struct arm_spe_decoder *arm_spe_decoder_new(struct arm_spe_params *params);
71void arm_spe_decoder_free(struct arm_spe_decoder *decoder);
72
73int arm_spe_decode(struct arm_spe_decoder *decoder);
74
75#endif