tools/perf/util/cs-etm.h

   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  */
  27 enum {
  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 */
  37 enum {
  38         CS_ETM_MAGIC,
  39         CS_ETM_CPU,
  40 };
  41
  42 /* ETMv3/PTM metadata */
  43 enum {
  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 */
  54 enum {
  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 */
  68 struct 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
  75 static const u64 __perf_cs_etmv3_magic   = 0x3030303030303030ULL;
  76 static 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
  81 int cs_etm__process_auxtrace_info(union perf_event *event,
  82                                   struct perf_session *session);
  83 #else
  84 static inline int
  85 cs_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