1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Arm Statistical Profiling Extensions (SPE) support
 4 * Copyright (c) 2017-2018, Arm Ltd.
 5 */
 6
 7#ifndef INCLUDE__PERF_ARM_SPE_H__
 8#define INCLUDE__PERF_ARM_SPE_H__
 9
10#define ARM_SPE_PMU_NAME "arm_spe_"
11
12enum {
13	ARM_SPE_PMU_TYPE,
14	ARM_SPE_PER_CPU_MMAPS,
15	ARM_SPE_AUXTRACE_V1_PRIV_MAX,
16};
17
18#define ARM_SPE_AUXTRACE_V1_PRIV_SIZE	\
19	(ARM_SPE_AUXTRACE_V1_PRIV_MAX * sizeof(u64))
20
21enum {
22	/*
23	 * The old metadata format (defined above) does not include a
24	 * field for version number. Version 1 is reserved and starts
25	 * from version 2.
26	 */
27	ARM_SPE_HEADER_VERSION,
28	/* Number of sizeof(u64) */
29	ARM_SPE_HEADER_SIZE,
30	/* PMU type shared by CPUs */
31	ARM_SPE_PMU_TYPE_V2,
32	/* Number of CPUs */
33	ARM_SPE_CPUS_NUM,
34	ARM_SPE_AUXTRACE_PRIV_MAX,
35};
36
37enum {
38	/* Magic number */
39	ARM_SPE_MAGIC,
40	/* CPU logical number in system */
41	ARM_SPE_CPU,
42	/* Number of parameters */
43	ARM_SPE_CPU_NR_PARAMS,
44	/* CPU MIDR */
45	ARM_SPE_CPU_MIDR,
46	/* Associated PMU type */
47	ARM_SPE_CPU_PMU_TYPE,
48	/* Minimal interval */
49	ARM_SPE_CAP_MIN_IVAL,
50	ARM_SPE_CPU_PRIV_MAX,
51};
52
53#define ARM_SPE_HEADER_CURRENT_VERSION	2
54
55
56union perf_event;
57struct perf_session;
58struct perf_pmu;
59
60struct auxtrace_record *arm_spe_recording_init(int *err,
61					       struct perf_pmu *arm_spe_pmu);
62
63int arm_spe_process_auxtrace_info(union perf_event *event,
64				  struct perf_session *session);
65
66void arm_spe_pmu_default_config(const struct perf_pmu *arm_spe_pmu,
67				struct perf_event_attr *attr);
68
69#endif