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 /* RB tree for quick conversion between traceID and CPUs */
57 struct 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
64 static const u64 __perf_cs_etmv3_magic = 0x3030303030303030ULL;
65 static 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
70 int cs_etm__process_auxtrace_info(union perf_event *event,
71 struct perf_session *session);
72 #else
73 static inline int
cs_etm__process_auxtrace_info(union perf_event * event __maybe_unused,struct perf_session * session __maybe_unused)74 cs_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
82
