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 };
26 
27 struct arm_spe_record {
28 	enum arm_spe_sample_type type;
29 	int err;
30 	u64 from_ip;
31 	u64 to_ip;
32 	u64 timestamp;
33 };
34 
35 struct arm_spe_insn;
36 
37 struct arm_spe_buffer {
38 	const unsigned char *buf;
39 	size_t len;
40 	u64 offset;
41 	u64 trace_nr;
42 };
43 
44 struct arm_spe_params {
45 	int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
46 	void *data;
47 };
48 
49 struct arm_spe_decoder {
50 	int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
51 	void *data;
52 	struct arm_spe_record record;
53 
54 	const unsigned char *buf;
55 	size_t len;
56 
57 	struct arm_spe_pkt packet;
58 };
59 
60 struct arm_spe_decoder *arm_spe_decoder_new(struct arm_spe_params *params);
61 void arm_spe_decoder_free(struct arm_spe_decoder *decoder);
62 
63 int arm_spe_decode(struct arm_spe_decoder *decoder);
64 
65 #endif
66