1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Arm Statistical Profiling Extensions (SPE) support
 4 * Copyright (c) 2017-2018, Arm Ltd.
 5 */
 6
 7#ifndef INCLUDE__ARM_SPE_PKT_DECODER_H__
 8#define INCLUDE__ARM_SPE_PKT_DECODER_H__
 9
10#include <stddef.h>
11#include <stdint.h>
12
13#define ARM_SPE_PKT_DESC_MAX		256
14
15#define ARM_SPE_NEED_MORE_BYTES		-1
16#define ARM_SPE_BAD_PACKET		-2
17
18enum arm_spe_pkt_type {
19	ARM_SPE_BAD,
20	ARM_SPE_PAD,
21	ARM_SPE_END,
22	ARM_SPE_TIMESTAMP,
23	ARM_SPE_ADDRESS,
24	ARM_SPE_COUNTER,
25	ARM_SPE_CONTEXT,
26	ARM_SPE_OP_TYPE,
27	ARM_SPE_EVENTS,
28	ARM_SPE_DATA_SOURCE,
29};
30
31struct arm_spe_pkt {
32	enum arm_spe_pkt_type	type;
33	unsigned char		index;
34	uint64_t		payload;
35};
36
37const char *arm_spe_pkt_name(enum arm_spe_pkt_type);
38
39int arm_spe_get_packet(const unsigned char *buf, size_t len,
40		       struct arm_spe_pkt *packet);
41
42int arm_spe_pkt_desc(const struct arm_spe_pkt *packet, char *buf, size_t len);
43#endif