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/* Cesar project {{{
 *
 * Copyright (C) 2007 Spidcom
 *
 * <<<Licence>>>
 *
 * }}} */
/**
 * \file    mac/pbproc/src/trace.c
 * \brief   Define PBProc trace events.
 * \ingroup mac_pbproc
 */
#include "common/std.h"

#include <string.h>
#include <stdio.h>

#include "mac/pbproc/inc/context.h"
#include "inc/fc.h"

/**
 * Format a delimiter type.
 * \see trace_format_t.
 */
static int
pbproc_trace_format_dt (char *text, uint text_size, int data)
{
    static const char *dt_names[PBPROC_FC_DT_NB] =
    {
        "BEACON",
        "SOF",
        "SACK",
        "RTS_CTS",
        "SOUND",
        "RSOF",
    };
    const char *dt_name;
    if (data == PBPROC_FC_DT_MASK + 1)
        dt_name = "CRC ERROR";
    else if (data < 0 || data >= PBPROC_FC_DT_NB)
        dt_name = "UNKNOWN";
    else
        dt_name = dt_names[data];
    uint dt_name_len = strlen (dt_name);
    if (dt_name_len > text_size)
        return -1;
    else
    {
        memcpy (text, dt_name, dt_name_len);
        return dt_name_len;
    }
}

/**
 * Format a FSM state.
 * \see trace_format_t.
 */
static int
pbproc_trace_format_state (char *text, uint text_size, int data)
{
    static const char *state_names[] =
    {
        "IDLE",
        "RX_DATA_WACK",
        "RX_DATA_WACK_LAST_PB",
        "RX_BURST",
        "RX_BEACON",
        "TX_WAIT_CTS",
        "TX_WAIT_ACCESS_CONF",
        "TX_WAIT_SACKD",
        "TX_WAIT_TX_END",
        "TX_BURST",
    };
    const char *state_name;
    dbg_assert (COUNT (state_names) == PBPROC_FSM_STATE_NB);
    if (data < 0 || data >= PBPROC_FSM_STATE_NB)
        state_name = "UNKNOWN";
    else
        state_name = state_names[data];
    uint state_name_len = strlen (state_name);
    if (state_name_len > text_size)
        return -1;
    else
    {
        memcpy (text, state_name, state_name_len);
        return state_name_len;
    }
}

/**
 * Format a PBDMA status.
 * \see trace_format_t.
 */
static int
pbproc_trace_format_pbdma_status (char *text, uint text_size, int data)
{
    char *t = text;
    uint s = 0;
    phy_pbdma_status_t status = PHY_PBDMA_STATUS (data);
    if (status.pb_null)
    {
        int r = snprintf (t, text_size - s, "N%u", status.null_pb_index);
        if (r >= (int) (text_size - s))
            return -1;
        s += r;
        t += r;
    }
    if (status.pb_crc_error)
    {
        s++;
        if (s > text_size) return -1;
        *t++ = '#';
    }
    if (status.pb_it)
    {
        s++;
        if (s > text_size) return -1;
        *t++ = 'I';
    }
    if (status.end_rx_pb)
    {
        s++;
        if (s > text_size) return -1;
        *t++ = 'R';
    }
    if (status.end_tx_pb)
    {
        s++;
        if (s > text_size) return -1;
        *t++ = 'T';
    }
    if (status.end_chandata)
    {
        s++;
        if (s > text_size) return -1;
        *t++ = 'C';
    }
    if (status.rx_header_load_error || status.ahb_response_error
        || status.chandata_type_forbidden || status.chandata_size_forbidden
        || status.pb_nb_total_null)
    {
        s++;
        if (s > text_size) return -1;
        *t++ = 'X';
    }
    return s;
}

void
pbproc_trace_init (pbproc_t *ctx)
{
    static trace_namespace_t namespace;
    static const trace_event_id_t event_ids[] =
    {
        TRACE_EVENT (PBPROC_TRACE_INIT, "init"),
        TRACE_EVENT (PBPROC_TRACE_UNINIT, "uninit"),
        TRACE_EVENT (PBPROC_TRACE_ACTIVATE, "activate %b"),
        TRACE_EVENT (PBPROC_TRACE_RX_SEG_REFILL, "rx seg refill %d"),
        TRACE_EVENT (PBPROC_TRACE_FSM_RX_FC, "fsm RX FC pre_date=%x %D",
                     TIMESTAMP),
        TRACE_EVENT (PBPROC_TRACE_FSM_ACCESS, "fsm ACCESS", TIMESTAMP),
        TRACE_EVENT (PBPROC_TRACE_FSM_ACCESS_CONF, "fsm ACCESS CONF",
                     TIMESTAMP),
        TRACE_EVENT (PBPROC_TRACE_FSM_PBDMA, "fsm PBDMA %P", TIMESTAMP),
        TRACE_EVENT (PBPROC_TRACE_FSM_DEFERRED, "fsm DEFERRED", TIMESTAMP),
        TRACE_EVENT (PBPROC_TRACE_FSM_CHANGE_STATE, "fsm change state %S"),
        TRACE_EVENT (PBPROC_TRACE_FSM_SCHEDULE_DEFERRED,
                     "fsm schedule deferred"),
        TRACE_EVENT (PBPROC_TRACE_FSM_UNEXPECTED, "fsm unexpected"),
        TRACE_EVENT (PBPROC_TRACE_FTOP_AIFS, "ftop aifs"),
        TRACE_EVENT (PBPROC_TRACE_FTOP_PRP_LOST, "ftop prp lost"),
        TRACE_EVENT (PBPROC_TRACE_FTOP_TX, "ftop tx mfs=%x dtei=%d lid=%d "
                     "tx_date=%x flp_tck=%d pb_nb=%d"),
        TRACE_EVENT (PBPROC_TRACE_FHFC_BEACON, "fhfc beacon"),
        TRACE_EVENT (PBPROC_TRACE_FHFC_SOF, "fhfc sof dtei=%d lid=%d"),
        TRACE_EVENT (PBPROC_TRACE_FRDA_RX_CB, "frda rx cb pb_nb=%d"),
        TRACE_EVENT (PBPROC_TRACE_FRBE_RX_BEACON_CB, "frbe rx beacon cb"),
    };
    dbg_assert (ctx);
    trace_namespace_init (&namespace, event_ids, COUNT (event_ids));
    trace_namespace_register_format (&namespace, 'D', pbproc_trace_format_dt);
    trace_namespace_register_format (&namespace, 'S',
                                     pbproc_trace_format_state);
    trace_namespace_register_format (&namespace, 'P',
                                     pbproc_trace_format_pbdma_status);
    trace_buffer_add (&ctx->trace, "pbproc", 8, 4, true, &namespace);
}

void
pbproc_trace_uninit (pbproc_t *ctx)
{
    dbg_assert (ctx);
    trace_buffer_remove (&ctx->trace);
}