1 files changed, 82 insertions, 0 deletions
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
new file mode 100644
index 000000000000..a5111a8d4360
--- /dev/null
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * arm_spe_decoder.h: Arm Statistical Profiling Extensions support
+ * Copyright (c) 2019-2020, Arm Ltd.
+ */
+
+#ifndef INCLUDE__ARM_SPE_DECODER_H__
+#define INCLUDE__ARM_SPE_DECODER_H__
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "arm-spe-pkt-decoder.h"
+
+enum arm_spe_events {
+	EV_EXCEPTION_GEN	= 0,
+	EV_RETIRED		= 1,
+	EV_L1D_ACCESS		= 2,
+	EV_L1D_REFILL		= 3,
+	EV_TLB_ACCESS		= 4,
+	EV_TLB_WALK		= 5,
+	EV_NOT_TAKEN		= 6,
+	EV_MISPRED		= 7,
+	EV_LLC_ACCESS		= 8,
+	EV_LLC_MISS		= 9,
+	EV_REMOTE_ACCESS	= 10,
+	EV_ALIGNMENT		= 11,
+	EV_PARTIAL_PREDICATE	= 17,
+	EV_EMPTY_PREDICATE	= 18,
+};
+
+enum arm_spe_sample_type {
+	ARM_SPE_L1D_ACCESS	= 1 << 0,
+	ARM_SPE_L1D_MISS	= 1 << 1,
+	ARM_SPE_LLC_ACCESS	= 1 << 2,
+	ARM_SPE_LLC_MISS	= 1 << 3,
+	ARM_SPE_TLB_ACCESS	= 1 << 4,
+	ARM_SPE_TLB_MISS	= 1 << 5,
+	ARM_SPE_BRANCH_MISS	= 1 << 6,
+	ARM_SPE_REMOTE_ACCESS	= 1 << 7,
+};
+
+struct arm_spe_record {
+	enum arm_spe_sample_type type;
+	int err;
+	u64 from_ip;
+	u64 to_ip;
+	u64 timestamp;
+};
+
+struct arm_spe_insn;
+
+struct arm_spe_buffer {
+	const unsigned char *buf;
+	size_t len;
+	u64 offset;
+	u64 trace_nr;
+};
+
+struct arm_spe_params {
+	int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
+	void *data;
+};
+
+struct arm_spe_decoder {
+	int (*get_trace)(struct arm_spe_buffer *buffer, void *data);
+	void *data;
+	struct arm_spe_record record;
+
+	const unsigned char *buf;
+	size_t len;
+
+	struct arm_spe_pkt packet;
+};
+
+struct arm_spe_decoder *arm_spe_decoder_new(struct arm_spe_params *params);
+void arm_spe_decoder_free(struct arm_spe_decoder *decoder);
+
+int arm_spe_decode(struct arm_spe_decoder *decoder);
+
+#endif