dpa_nvqual_kernels_dev.c

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/*
 * Copyright (c) 2025 NVIDIA CORPORATION AND AFFILIATES.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
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 *       conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this list of
 *       conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
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 *       permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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#include <stdint.h>
#include <stddef.h>
#include <dpaintrin.h>
#include <doca_dpa_dev.h>
#include <doca_dpa_dev_sync_event.h>
#include "../common/dpa_nvqual_common_defs.h"
 
__dpa_global__ void dpa_nvqual_kernel(void)
{
    DOCA_DPA_DEV_LOG_DBG("DPA thread kernel has been activated\n");
 
    struct dpa_nvqual_tls *tls = (struct dpa_nvqual_tls *)doca_dpa_dev_thread_get_local_storage();
 
    DOCA_DPA_DEV_LOG_DBG("%s called with src=%ld, dst=%ld, size=%ld, num_ops=%ld\n",
                 __func__,
                 tls->src_buf,
                 tls->dst_buf,
                 tls->buffers_size,
                 tls->num_ops);
 
    uint64_t src = tls->src_buf;
    uint64_t dst = tls->dst_buf;
    size_t size = tls->buffers_size;
    uint64_t num_ops = tls->num_ops;
    uint64_t start_cycles, end_cycles;
 
    start_cycles = __dpa_thread_cycles();
    for (uint64_t op_idx = 0; op_idx < num_ops; op_idx++) {
        for (size_t i = 0; i < size; i++) {
            ((uint8_t *)dst)[i] = ((uint8_t *)src)[i];
        }
    }
 
    end_cycles = __dpa_thread_cycles();
 
    uint64_t ret_val = end_cycles - start_cycles;
 
    ((struct dpa_nvqual_thread_ret *)tls->thread_ret)->eu = tls->eu;
    ((struct dpa_nvqual_thread_ret *)tls->thread_ret)->val = ret_val;
 
    doca_dpa_dev_sync_event_update_add(tls->dev_se, 1);
 
    doca_dpa_dev_thread_reschedule();
}
 
__dpa_rpc__ uint64_t dpa_nvqual_entry_point(doca_dpa_dev_uintptr_t dev_notification_completions, uint64_t num_threads)
{
    DOCA_DPA_DEV_LOG_DBG("DPA entry-point RPC has been called\n");
 
    for (uint64_t i = 0; i < num_threads; i++) {
        doca_dpa_dev_thread_notify(((doca_dpa_dev_notification_completion_t *)dev_notification_completions)[i]);
    }
 
    DOCA_DPA_DEV_LOG_DBG("DPA entry-point RPC completed\n");
 
    return 0;
}