GNU Linux-libre 4.19.211-gnu1
[releases.git] / tools / perf / util / cs-etm.h
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  */
16 enum {
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 */
26 enum {
27         CS_ETM_MAGIC,
28         CS_ETM_CPU,
29 };
30
31 /* ETMv3/PTM metadata */
32 enum {
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 */
43 enum {
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 #define KiB(x) ((x) * 1024)
57 #define MiB(x) ((x) * 1024 * 1024)
58
59 #define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64))
60
61 static const u64 __perf_cs_etmv3_magic   = 0x3030303030303030ULL;
62 static const u64 __perf_cs_etmv4_magic   = 0x4040404040404040ULL;
63 #define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64))
64 #define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64))
65
66 #ifdef HAVE_CSTRACE_SUPPORT
67 int cs_etm__process_auxtrace_info(union perf_event *event,
68                                   struct perf_session *session);
69 int cs_etm__get_cpu(u8 trace_chan_id, int *cpu);
70 #else
71 static inline int
72 cs_etm__process_auxtrace_info(union perf_event *event __maybe_unused,
73                               struct perf_session *session __maybe_unused)
74 {
75         return -1;
76 }
77
78 static inline int cs_etm__get_cpu(u8 trace_chan_id __maybe_unused,
79                                   int *cpu __maybe_unused)
80 {
81         return -1;
82 }
83 #endif
84
85 #endif