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Linux kernel mirror (for testing)
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1/*
2 * Copyright(C) 2015 Linaro Limited. All rights reserved.
3 * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef INCLUDE__UTIL_PERF_CS_ETM_H__
19#define INCLUDE__UTIL_PERF_CS_ETM_H__
20
21#include "util/event.h"
22#include "util/session.h"
23
24/* Versionning header in case things need tro change in the future. That way
25 * decoding of old snapshot is still possible.
26 */
27enum {
28 /* Starting with 0x0 */
29 CS_HEADER_VERSION_0,
30 /* PMU->type (32 bit), total # of CPUs (32 bit) */
31 CS_PMU_TYPE_CPUS,
32 CS_ETM_SNAPSHOT,
33 CS_HEADER_VERSION_0_MAX,
34};
35
36/* Beginning of header common to both ETMv3 and V4 */
37enum {
38 CS_ETM_MAGIC,
39 CS_ETM_CPU,
40};
41
42/* ETMv3/PTM metadata */
43enum {
44 /* Dynamic, configurable parameters */
45 CS_ETM_ETMCR = CS_ETM_CPU + 1,
46 CS_ETM_ETMTRACEIDR,
47 /* RO, taken from sysFS */
48 CS_ETM_ETMCCER,
49 CS_ETM_ETMIDR,
50 CS_ETM_PRIV_MAX,
51};
52
53/* ETMv4 metadata */
54enum {
55 /* Dynamic, configurable parameters */
56 CS_ETMV4_TRCCONFIGR = CS_ETM_CPU + 1,
57 CS_ETMV4_TRCTRACEIDR,
58 /* RO, taken from sysFS */
59 CS_ETMV4_TRCIDR0,
60 CS_ETMV4_TRCIDR1,
61 CS_ETMV4_TRCIDR2,
62 CS_ETMV4_TRCIDR8,
63 CS_ETMV4_TRCAUTHSTATUS,
64 CS_ETMV4_PRIV_MAX,
65};
66
67/* RB tree for quick conversion between traceID and CPUs */
68struct intlist *traceid_list;
69
70#define KiB(x) ((x) * 1024)
71#define MiB(x) ((x) * 1024 * 1024)
72
73#define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64))
74
75static const u64 __perf_cs_etmv3_magic = 0x3030303030303030ULL;
76static const u64 __perf_cs_etmv4_magic = 0x4040404040404040ULL;
77#define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64))
78#define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64))
79
80#ifdef HAVE_CSTRACE_SUPPORT
81int cs_etm__process_auxtrace_info(union perf_event *event,
82 struct perf_session *session);
83#else
84static inline int
85cs_etm__process_auxtrace_info(union perf_event *event __maybe_unused,
86 struct perf_session *session __maybe_unused)
87{
88 return -1;
89}
90#endif
91
92#endif