dma_copy.c

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/*
 * Copyright (c) 2022-2023 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:
 *     * Redistributions of source code must retain the above copyright notice, this list of
 *       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.
 *     * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
 *       to endorse or promote products derived from this software without specific prior written
 *       permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
 
#include <stdlib.h>
#include <string.h>
 
#include <doca_buf.h>
#include <doca_buf_inventory.h>
#include <doca_log.h>
 
#include "dma_copy_core.h"
 
DOCA_LOG_REGISTER(DMA_COPY);
 
/*
 * DMA copy application main function
 *
 * @argc [in]: command line arguments size
 * @argv [in]: array of command line arguments
 * @return: EXIT_SUCCESS on success and EXIT_FAILURE otherwise
 */
int main(int argc, char **argv)
{
    doca_error_t result;
    struct comch_cfg *comch_cfg;
    struct dma_copy_cfg dma_cfg = {0};
    struct doca_log_backend *sdk_log;
    int exit_status = EXIT_FAILURE;
 
#ifdef DOCA_ARCH_DPU
    dma_cfg.mode = DMA_COPY_MODE_DPU;
#endif
 
    /* Register a logger backend */
    result = doca_log_backend_create_standard();
    if (result != DOCA_SUCCESS)
        return EXIT_FAILURE;
 
    /* Register a logger backend for internal SDK errors and warnings */
    result = doca_log_backend_create_with_file_sdk(stderr, &sdk_log);
    if (result != DOCA_SUCCESS)
        return EXIT_FAILURE;
    result = doca_log_backend_set_sdk_level(sdk_log, DOCA_LOG_LEVEL_WARNING);
    if (result != DOCA_SUCCESS)
        return EXIT_FAILURE;
 
    result = doca_argp_init(NULL, &dma_cfg);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to init ARGP resources: %s", doca_error_get_descr(result));
        return EXIT_FAILURE;
    }
 
    result = register_dma_copy_params();
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to register the program parameters: %s", doca_error_get_descr(result));
        goto destroy_argp;
    }
 
    result = doca_argp_start(argc, argv);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to parse application input: %s", doca_error_get_descr(result));
        goto destroy_argp;
    }
 
    result = comch_utils_init(SERVER_NAME,
                  dma_cfg.cc_dev_pci_addr,
                  dma_cfg.cc_dev_rep_pci_addr,
                  &dma_cfg,
                  host_recv_event_cb,
                  dpu_recv_event_cb,
                  &comch_cfg);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to initialize a comch: %s", doca_error_get_descr(result));
        goto destroy_argp;
    }
 
    if (dma_cfg.mode == DMA_COPY_MODE_HOST)
        result = host_start_dma_copy(&dma_cfg, comch_cfg);
    else
        result = dpu_start_dma_copy(&dma_cfg, comch_cfg);
 
    if (result == DOCA_SUCCESS)
        exit_status = EXIT_SUCCESS;
 
    /* Destroy Comm Channel */
    result = comch_utils_destroy(comch_cfg);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to destroy DOCA Comch");
        exit_status = EXIT_FAILURE;
    }
 
destroy_argp:
    /* ARGP destroy_resources */
    doca_argp_destroy();
 
    return exit_status;
}