1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright(C) 2015 Linaro Limited. All rights reserved.
 4 * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
 5 */
 6
 7#ifndef INCLUDE__UTIL_PERF_CS_ETM_H__
 8#define INCLUDE__UTIL_PERF_CS_ETM_H__
 9
10#include "util/event.h"
11#include "util/session.h"
12
13/* Versionning header in case things need tro change in the future.  That way
14 * decoding of old snapshot is still possible.
15 */
16enum {
17	/* Starting with 0x0 */
18	CS_HEADER_VERSION_0,
19	/* PMU->type (32 bit), total # of CPUs (32 bit) */
20	CS_PMU_TYPE_CPUS,
21	CS_ETM_SNAPSHOT,
22	CS_HEADER_VERSION_0_MAX,
23};
24
25/* Beginning of header common to both ETMv3 and V4 */
26enum {
27	CS_ETM_MAGIC,
28	CS_ETM_CPU,
29};
30
31/* ETMv3/PTM metadata */
32enum {
33	/* Dynamic, configurable parameters */
34	CS_ETM_ETMCR = CS_ETM_CPU + 1,
35	CS_ETM_ETMTRACEIDR,
36	/* RO, taken from sysFS */
37	CS_ETM_ETMCCER,
38	CS_ETM_ETMIDR,
39	CS_ETM_PRIV_MAX,
40};
41
42/* ETMv4 metadata */
43enum {
44	/* Dynamic, configurable parameters */
45	CS_ETMV4_TRCCONFIGR = CS_ETM_CPU + 1,
46	CS_ETMV4_TRCTRACEIDR,
47	/* RO, taken from sysFS */
48	CS_ETMV4_TRCIDR0,
49	CS_ETMV4_TRCIDR1,
50	CS_ETMV4_TRCIDR2,
51	CS_ETMV4_TRCIDR8,
52	CS_ETMV4_TRCAUTHSTATUS,
53	CS_ETMV4_PRIV_MAX,
54};
55
56/* RB tree for quick conversion between traceID and CPUs */
57struct intlist *traceid_list;
58
59#define KiB(x) ((x) * 1024)
60#define MiB(x) ((x) * 1024 * 1024)
61
62#define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64))
63
64static const u64 __perf_cs_etmv3_magic   = 0x3030303030303030ULL;
65static const u64 __perf_cs_etmv4_magic   = 0x4040404040404040ULL;
66#define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64))
67#define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64))
68
69#ifdef HAVE_CSTRACE_SUPPORT
70int cs_etm__process_auxtrace_info(union perf_event *event,
71				  struct perf_session *session);
72#else
73static inline int
74cs_etm__process_auxtrace_info(union perf_event *event __maybe_unused,
75			      struct perf_session *session __maybe_unused)
76{
77	return -1;
78}
79#endif
80
81#endif