arm-spe-pkt-decoder.h

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/* 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

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;
};

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