1 files changed, 85 insertions, 0 deletions
diff --git a/tools/perf/util/cs-etm.h b/tools/perf/util/cs-etm.h
new file mode 100644
index 000000000..97c3152f5
--- /dev/null
+++ b/tools/perf/util/cs-etm.h
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright(C) 2015 Linaro Limited. All rights reserved.
+ * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
+ */
+
+#ifndef INCLUDE__UTIL_PERF_CS_ETM_H__
+#define INCLUDE__UTIL_PERF_CS_ETM_H__
+
+#include "util/event.h"
+#include "util/session.h"
+
+/* Versionning header in case things need tro change in the future.  That way
+ * decoding of old snapshot is still possible.
+ */
+enum {
+	/* Starting with 0x0 */
+	CS_HEADER_VERSION_0,
+	/* PMU->type (32 bit), total # of CPUs (32 bit) */
+	CS_PMU_TYPE_CPUS,
+	CS_ETM_SNAPSHOT,
+	CS_HEADER_VERSION_0_MAX,
+};
+
+/* Beginning of header common to both ETMv3 and V4 */
+enum {
+	CS_ETM_MAGIC,
+	CS_ETM_CPU,
+};
+
+/* ETMv3/PTM metadata */
+enum {
+	/* Dynamic, configurable parameters */
+	CS_ETM_ETMCR = CS_ETM_CPU + 1,
+	CS_ETM_ETMTRACEIDR,
+	/* RO, taken from sysFS */
+	CS_ETM_ETMCCER,
+	CS_ETM_ETMIDR,
+	CS_ETM_PRIV_MAX,
+};
+
+/* ETMv4 metadata */
+enum {
+	/* Dynamic, configurable parameters */
+	CS_ETMV4_TRCCONFIGR = CS_ETM_CPU + 1,
+	CS_ETMV4_TRCTRACEIDR,
+	/* RO, taken from sysFS */
+	CS_ETMV4_TRCIDR0,
+	CS_ETMV4_TRCIDR1,
+	CS_ETMV4_TRCIDR2,
+	CS_ETMV4_TRCIDR8,
+	CS_ETMV4_TRCAUTHSTATUS,
+	CS_ETMV4_PRIV_MAX,
+};
+
+#define KiB(x) ((x) * 1024)
+#define MiB(x) ((x) * 1024 * 1024)
+
+#define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64))
+
+static const u64 __perf_cs_etmv3_magic   = 0x3030303030303030ULL;
+static const u64 __perf_cs_etmv4_magic   = 0x4040404040404040ULL;
+#define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64))
+#define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64))
+
+#ifdef HAVE_CSTRACE_SUPPORT
+int cs_etm__process_auxtrace_info(union perf_event *event,
+				  struct perf_session *session);
+int cs_etm__get_cpu(u8 trace_chan_id, int *cpu);
+#else
+static inline int
+cs_etm__process_auxtrace_info(union perf_event *event __maybe_unused,
+			      struct perf_session *session __maybe_unused)
+{
+	return -1;
+}
+
+static inline int cs_etm__get_cpu(u8 trace_chan_id __maybe_unused,
+				  int *cpu __maybe_unused)
+{
+	return -1;
+}
+#endif
+
+#endif