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