1 files changed, 87 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..46a61df1145b
--- /dev/null
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
@@ -0,0 +1,87 @@
+/* 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_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,
+};
+
+enum arm_spe_op_type {
+	ARM_SPE_LD		= 1 << 0,
+	ARM_SPE_ST		= 1 << 1,
+};
+
+enum arm_spe_neoverse_data_source {
+	ARM_SPE_NV_L1D		 = 0x0,
+	ARM_SPE_NV_L2		 = 0x8,
+	ARM_SPE_NV_PEER_CORE	 = 0x9,
+	ARM_SPE_NV_LOCAL_CLUSTER = 0xa,
+	ARM_SPE_NV_SYS_CACHE	 = 0xb,
+	ARM_SPE_NV_PEER_CLUSTER	 = 0xc,
+	ARM_SPE_NV_REMOTE	 = 0xd,
+	ARM_SPE_NV_DRAM		 = 0xe,
+};
+
+struct arm_spe_record {
+	enum arm_spe_sample_type type;
+	int err;
+	u32 op;
+	u32 latency;
+	u64 from_ip;
+	u64 to_ip;
+	u64 timestamp;
+	u64 virt_addr;
+	u64 phys_addr;
+	u64 context_id;
+	u16 source;
+};
+
+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