1 files changed, 59 insertions, 0 deletions
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
new file mode 100644
index 000000000000..4c870521b8eb
--- /dev/null
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Arm Statistical Profiling Extensions (SPE) support
+ * Copyright (c) 2017-2018, Arm Ltd.
+ */
+
+#ifndef INCLUDE__ARM_SPE_PKT_DECODER_H__
+#define INCLUDE__ARM_SPE_PKT_DECODER_H__
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define ARM_SPE_PKT_DESC_MAX		256
+
+#define ARM_SPE_NEED_MORE_BYTES		-1
+#define ARM_SPE_BAD_PACKET		-2
+
+#define ARM_SPE_PKT_MAX_SZ		16
+
+enum arm_spe_pkt_type {
+	ARM_SPE_BAD,
+	ARM_SPE_PAD,
+	ARM_SPE_END,
+	ARM_SPE_TIMESTAMP,
+	ARM_SPE_ADDRESS,
+	ARM_SPE_COUNTER,
+	ARM_SPE_CONTEXT,
+	ARM_SPE_OP_TYPE,
+	ARM_SPE_EVENTS,
+	ARM_SPE_DATA_SOURCE,
+};
+
+struct arm_spe_pkt {
+	enum arm_spe_pkt_type	type;
+	unsigned char		index;
+	uint64_t		payload;
+};
+
+#define SPE_ADDR_PKT_HDR_INDEX_INS		(0x0)
+#define SPE_ADDR_PKT_HDR_INDEX_BRANCH		(0x1)
+#define SPE_ADDR_PKT_HDR_INDEX_DATA_VIRT	(0x2)
+#define SPE_ADDR_PKT_HDR_INDEX_DATA_PHYS	(0x3)
+
+#define SPE_ADDR_PKT_NS				BIT(7)
+#define SPE_ADDR_PKT_CH				BIT(6)
+#define SPE_ADDR_PKT_EL_OFFSET			(5)
+#define SPE_ADDR_PKT_EL_MASK			(0x3 << SPE_ADDR_PKT_EL_OFFSET)
+#define SPE_ADDR_PKT_EL0			(0)
+#define SPE_ADDR_PKT_EL1			(1)
+#define SPE_ADDR_PKT_EL2			(2)
+#define SPE_ADDR_PKT_EL3			(3)
+
+const char *arm_spe_pkt_name(enum arm_spe_pkt_type);
+
+int arm_spe_get_packet(const unsigned char *buf, size_t len,
+		       struct arm_spe_pkt *packet);
+
+int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf, size_t len);
+#endif