source: mainline/uspace/app/usbinfo/main.c@ 2c5cefa

/*
 * Copyright (c) 2010 Vojtech Horky
 * 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup usb
 * @{
 */
/**
 * @file
 * @brief USB querying.
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <str_error.h>
#include <bool.h>
#include <devman.h>
#include <usb/usbdrv.h>
#include "usbinfo.h"

static void print_usage(char *app_name)
{
        printf(NAME ": query USB devices for descriptors\n\n");
        printf("Usage: %s /path/to/hc usb-address\n where\n", app_name);
        printf("   /path/to/hc   Devman path to USB host controller\n");
        printf("   usb-address   USB address of device to be queried\n");
        printf("\n");
}

static int connect_to_hc(const char *path)
{
        int rc;
        devman_handle_t handle;

        rc = devman_device_get_handle(path, &handle, 0);
        if (rc != EOK) {
                return rc;
        }

        int phone = devman_device_connect(handle, 0);

        return phone;
}

int main(int argc, char * argv[])
{
        if (argc != 3) {
                print_usage(argv[0]);
                return EINVAL;
        }

        char *hc_path = argv[1];
        long int address_long = strtol(argv[2], NULL, 0);

        /*
         * Connect to given host controller driver.
         */
        int hc_phone = connect_to_hc(hc_path);
        if (hc_phone < 0) {
                fprintf(stderr,
                    NAME ": unable to connect to HC at `%s': %s.\n",
                    hc_path, str_error(hc_phone));
                return hc_phone;
        }

        /*
         * Verify address is okay.
         */
        usb_address_t address = (usb_address_t) address_long;
        if ((address < 0) || (address >= USB11_ADDRESS_MAX)) {
                fprintf(stderr, NAME ": USB address out of range.\n");
                return ERANGE;
        }

        /*
         * Now, learn information about the device.
         */
        int rc;

        /*
         * Get device descriptor and dump it.
         */
        usb_standard_device_descriptor_t device_descriptor;
        usb_dprintf(NAME, 1,
            "usb_drv_req_get_device_descriptor(%d, %d, %p)\n",
            hc_phone, (int) address, &device_descriptor);

        rc = usb_drv_req_get_device_descriptor(hc_phone, address,
            &device_descriptor);
        if (rc != EOK) {
                fprintf(stderr,
                    NAME ": failed to fetch standard device descriptor: %s.\n",
                    str_error(rc));
                return rc;
        }
        dump_standard_device_descriptor(&device_descriptor);

        /*
         * Get first configuration descriptor and dump it.
         */
        usb_standard_configuration_descriptor_t config_descriptor;
        int config_index = 0;
        usb_dprintf(NAME, 1,
            "usb_drv_req_get_bare_configuration_descriptor(%d, %d, %d, %p)\n",
            hc_phone, (int) address, config_index, &config_descriptor);

        rc = usb_drv_req_get_bare_configuration_descriptor(hc_phone, address,
            config_index, &config_descriptor );
        if (rc != EOK) {
                fprintf(stderr,
                    NAME ": failed to fetch standard configuration descriptor: %s.\n",
                    str_error(rc));
                return rc;
        }
        dump_standard_configuration_descriptor(config_index,
            &config_descriptor);

        void *full_config_descriptor = malloc(config_descriptor.total_length);
        usb_dprintf(NAME, 1,
            "usb_drv_req_get_full_configuration_descriptor(%d, %d, %d, %p, %zu)\n",
            hc_phone, (int) address, config_index,
            full_config_descriptor, config_descriptor.total_length);

        rc = usb_drv_req_get_full_configuration_descriptor(hc_phone, address,
            config_index,
            full_config_descriptor, config_descriptor.total_length, NULL);
        if (rc != EOK) {
                fprintf(stderr,
                    NAME ": failed to fetch full configuration descriptor: %s.\n",
                    str_error(rc));
                return rc;
        }
        dump_buffer("Full configuration descriptor:",
            full_config_descriptor, config_descriptor.total_length);

        return EOK;
}


/** @}
 */