source: mainline/uspace/drv/usbhid/descdump.c@ e099f26

/*
 * Copyright (c) 2010 Lubos Slovak
 * 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 drvusbhid
 * @{
 */
/** @file
 * Descriptor dumping.
 */

#include <usb/classes/hid.h>
#include <stdio.h>
#include <assert.h>

#include "descdump.h"

/*----------------------------------------------------------------------------*/

#define BYTES_PER_LINE 12

/**
 * Dumps the given buffer in hexadecimal format to standard output.
 *
 * @param msg Message to print before the buffer.
 * @param buffer Buffer to print.
 * @param length Size of the buffer in bytes.
 */
static void dump_buffer(const char *msg, const uint8_t *buffer, size_t length)
{
        printf("%s\n", msg);

        size_t i;
        for (i = 0; i < length; i++) {
                printf("  0x%02X", buffer[i]);
                if (((i > 0) && (((i+1) % BYTES_PER_LINE) == 0))
                    || (i + 1 == length)) {
                        printf("\n");
                }
        }
}

/*----------------------------------------------------------------------------*/

#define INDENT "  "

/**
 * Print standard configuration descriptor to standard output.
 *
 * @param index Index of the descriptor.
 * @param d Standard configuration descriptor to print.
 */
void dump_standard_configuration_descriptor(
    int index, const usb_standard_configuration_descriptor_t *d)
{
        bool self_powered = d->attributes & 64;
        bool remote_wakeup = d->attributes & 32;
        
        printf("Standard configuration descriptor #%d\n", index);
        printf(INDENT "bLength = %d\n", d->length);
        printf(INDENT "bDescriptorType = 0x%02x\n", d->descriptor_type);
        printf(INDENT "wTotalLength = %d\n", d->total_length);
        printf(INDENT "bNumInterfaces = %d\n", d->interface_count);
        printf(INDENT "bConfigurationValue = %d\n", d->configuration_number);
        printf(INDENT "iConfiguration = %d\n", d->str_configuration);
        printf(INDENT "bmAttributes = %d [%s%s%s]\n", d->attributes,
            self_powered ? "self-powered" : "",
            (self_powered & remote_wakeup) ? ", " : "",
            remote_wakeup ? "remote-wakeup" : "");
        printf(INDENT "MaxPower = %d (%dmA)\n", d->max_power,
            2 * d->max_power);
        // printf(INDENT " = %d\n", d->);
}

/**
 * Print standard interface descriptor to standard output.
 *
 * @param d Standard interface descriptor to print.
 */
void dump_standard_interface_descriptor(
    const usb_standard_interface_descriptor_t *d)
{
        printf("Standard interface descriptor\n");
        printf(INDENT "bLength = %d\n", d->length);
        printf(INDENT "bDescriptorType = 0x%02x\n", d->descriptor_type);
        printf(INDENT "bInterfaceNumber = %d\n", d->interface_number);
        printf(INDENT "bAlternateSetting = %d\n", d->alternate_setting);
        printf(INDENT "bNumEndpoints = %d\n", d->endpoint_count);
        printf(INDENT "bInterfaceClass = %d\n", d->interface_class);
        printf(INDENT "bInterfaceSubClass = %d\n", d->interface_subclass);
        printf(INDENT "bInterfaceProtocol = %d\n", d->interface_protocol);
        printf(INDENT "iInterface = %d\n", d->str_interface);
}

/**
 * Print standard endpoint descriptor to standard output.
 *
 * @param d Standard endpoint descriptor to print.
 */
void dump_standard_endpoint_descriptor(
    const usb_standard_endpoint_descriptor_t *d)
{
        const char *transfer_type;
        switch (d->attributes & 3) {
        case USB_TRANSFER_CONTROL:
                transfer_type = "control";
                break;
        case USB_TRANSFER_ISOCHRONOUS:
                transfer_type = "isochronous";
                break;
        case USB_TRANSFER_BULK:
                transfer_type = "bulk";
                break;
        case USB_TRANSFER_INTERRUPT:
                transfer_type = "interrupt";
                break;
        }

        printf("Standard endpoint descriptor\n");
        printf(INDENT "bLength = %d\n", d->length);
        printf(INDENT "bDescriptorType = 0x%02x\n", d->descriptor_type);
        printf(INDENT "bmAttributes = %d [%s]\n", d->attributes, transfer_type);
        printf(INDENT "wMaxPacketSize = %d\n", d->max_packet_size);
        printf(INDENT "bInterval = %d\n", d->poll_interval);
}

/**
 * Print standard HID descriptor to standard output.
 *
 * @param d Standard HID descriptor to print.
 */
void dump_standard_hid_descriptor_header(
    const usb_standard_hid_descriptor_t *d)
{
        printf("Standard HID descriptor\n");
        printf(INDENT "bLength = %d\n", d->length);
        printf(INDENT "bDescriptorType = 0x%02x\n", d->descriptor_type);
        printf(INDENT "bcdHID = %d\n", d->spec_release);
        printf(INDENT "bCountryCode = %d\n", d->country_code);
        printf(INDENT "bNumDescriptors = %d\n", d->class_desc_count);
        printf(INDENT "bDescriptorType = %d\n", d->report_desc_info.type);
        printf(INDENT "wDescriptorLength = %d\n", d->report_desc_info.length);
}

/**
 * Print HID class-specific descriptor header (type and length) to standard 
 * output.
 * 
 * @param d HID class-specific descriptor header to print.
 */
void dump_standard_hid_class_descriptor_info(
    const usb_standard_hid_class_descriptor_info_t *d)
{
        printf(INDENT "bDescriptorType = %d\n", d->type);
        printf(INDENT "wDescriptorLength = %d\n", d->length);
}

/**
 * Print HID class-specific descriptor (without the header) to standard output.
 *
 * @param index Index of the descriptor.
 * @param type Type of the HID class-specific descriptor (Report or Physical).
 * @param d HID class descriptor to print.
 * @param size Size of the descriptor in bytes.
 */
void dump_hid_class_descriptor(int index, uint8_t type, 
    const uint8_t *d, size_t size )
{
        printf("Class-specific descriptor #%d (type: %u)\n", index, type);
        assert(d != NULL);
        dump_buffer("", d, size);
}

/**
 * @}
 */