corundum/fpga/app/template/utils/app-template-test.c

// SPDX-License-Identifier: BSD-2-Clause-Views
/*
 * Copyright (c) 2022-2023 The Regents of the University of California
 */

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

#include <mqnic/mqnic.h>

#define TEMPLATE_APP_ID 0x12340001

static void usage(char *name)
{
    fprintf(stderr,
        "usage: %s [options]\n"
        " -d name    device to open (/dev/mqnic0)\n",
        name);
}

int main(int argc, char *argv[])
{
    char *name;
    int opt;

    char *device = NULL;
    struct mqnic *dev;

    name = strrchr(argv[0], '/');
    name = name ? 1+name : argv[0];

    while ((opt = getopt(argc, argv, "d:h?")) != EOF)
    {
        switch (opt)
        {
        case 'd':
            device = optarg;
            break;
        case 'h':
        case '?':
            usage(name);
            return 0;
        default:
            usage(name);
            return -1;
        }
    }

    if (!device)
    {
        fprintf(stderr, "Device not specified\n");
        usage(name);
        return -1;
    }

    dev = mqnic_open(device);

    if (!dev)
    {
        fprintf(stderr, "Failed to open device\n");
        return -1;
    }

    if (dev->pci_device_path)
    {
        char *ptr = strrchr(dev->pci_device_path, '/');
        if (ptr)
            printf("PCIe ID: %s\n", ptr+1);
    }

    mqnic_print_fw_id(dev);

    if (!dev->app_regs)
    {
        fprintf(stderr, "Application section not present\n");
        goto err;
    }

    if (dev->app_id != TEMPLATE_APP_ID)
    {
        fprintf(stderr, "Unexpected application id (expected 0x%08x, got 0x%08x)\n", TEMPLATE_APP_ID, dev->app_id);
        goto err;
    }

    printf("App regs size: %ld\n", dev->app_regs_size);

    // Read/write test
    printf("Write to application registers\n");
    mqnic_reg_write32(dev->app_regs, 0, 0x11223344);

    printf("Read from application registers\n");
    printf("%08x\n", mqnic_reg_read32(dev->app_regs, 0));

err:
    mqnic_close(dev);
    return 0;
}