/*
 * debug.c - USB debug helper routines.
 *
 * I just want these out of the way where they aren't in your
 * face, but so that you can still use them..
 */
#include <linux/config.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/slab.h>
#ifdef CONFIG_USB_DEBUG
        #define DEBUG
#else
        #undef DEBUG
#endif
#include <linux/usb.h>

static void usb_show_endpoint(struct usb_endpoint_descriptor *endpoint)
{
        usb_show_endpoint_descriptor(endpoint);
}

static void usb_show_interface(struct usb_interface_descriptor *altsetting)
{
        int i;

        usb_show_interface_descriptor(altsetting);

        for (i = 0; i < altsetting->bNumEndpoints; i++)
                usb_show_endpoint(altsetting->endpoint + i);
}

static void usb_show_config(struct usb_config_descriptor *config)
{
        int i, j;
        struct usb_interface *ifp;

        usb_show_config_descriptor(config);
        for (i = 0; i < config->bNumInterfaces; i++) {
                ifp = config->interface + i;

                if (!ifp)
                        break;

                printk("\n  Interface: %d\n", i);
                for (j = 0; j < ifp->num_altsetting; j++)
                        usb_show_interface(ifp->altsetting + j);
        }
}

void usb_show_device(struct usb_device *dev)
{
        int i;

        usb_show_device_descriptor(&dev->descriptor);
        for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
                usb_show_config(dev->config + i);
}

/*
 * Parse and show the different USB descriptors.
 */
void usb_show_device_descriptor(struct usb_device_descriptor *desc)
{
        if (!desc)
        {
                printk("Invalid USB device descriptor (NULL POINTER)\n");
                return;
        }
        printk("  Length              = %2d%s\n", desc->bLength,
                desc->bLength == USB_DT_DEVICE_SIZE ? "" : " (!!!)");
        printk("  DescriptorType      = %02x\n", desc->bDescriptorType);

        printk("  USB version         = %x.%02x\n",
                desc->bcdUSB >> 8, desc->bcdUSB & 0xff);
        printk("  Vendor:Product      = %04x:%04x\n",
                desc->idVendor, desc->idProduct);
        printk("  MaxPacketSize0      = %d\n", desc->bMaxPacketSize0);
        printk("  NumConfigurations   = %d\n", desc->bNumConfigurations);
        printk("  Device version      = %x.%02x\n",
                desc->bcdDevice >> 8, desc->bcdDevice & 0xff);

        printk("  Device Class:SubClass:Protocol = %02x:%02x:%02x\n",
                desc->bDeviceClass, desc->bDeviceSubClass, desc->bDeviceProtocol);
        switch (desc->bDeviceClass) {
        case 0:
                printk("    Per-interface classes\n");
                break;
        case USB_CLASS_AUDIO:
                printk("    Audio device class\n");
                break;
        case USB_CLASS_COMM:
                printk("    Communications class\n");
                break;
        case USB_CLASS_HID:
                printk("    Human Interface Devices class\n");
                break;
        case USB_CLASS_PRINTER:
                printk("    Printer device class\n");
                break;
        case USB_CLASS_MASS_STORAGE:
                printk("    Mass Storage device class\n");
                break;
        case USB_CLASS_HUB:
                printk("    Hub device class\n");
                break;
        case USB_CLASS_VENDOR_SPEC:
                printk("    Vendor class\n");
                break;
        default:
                printk("    Unknown class\n");
        }
}

void usb_show_config_descriptor(struct usb_config_descriptor *desc)
{
        printk("Configuration:\n");
        printk("  bLength             = %4d%s\n", desc->bLength,
                desc->bLength == USB_DT_CONFIG_SIZE ? "" : " (!!!)");
        printk("  bDescriptorType     =   %02x\n", desc->bDescriptorType);
        printk("  wTotalLength        = %04x\n", desc->wTotalLength);
        printk("  bNumInterfaces      =   %02x\n", desc->bNumInterfaces);
        printk("  bConfigurationValue =   %02x\n", desc->bConfigurationValue);
        printk("  iConfiguration      =   %02x\n", desc->iConfiguration);
        printk("  bmAttributes        =   %02x\n", desc->bmAttributes);
        printk("  MaxPower            = %4dmA\n", desc->MaxPower * 2);
}

void usb_show_interface_descriptor(struct usb_interface_descriptor *desc)
{
        printk("  Alternate Setting: %2d\n", desc->bAlternateSetting);
        printk("    bLength             = %4d%s\n", desc->bLength,
                desc->bLength == USB_DT_INTERFACE_SIZE ? "" : " (!!!)");
        printk("    bDescriptorType     =   %02x\n", desc->bDescriptorType);
        printk("    bInterfaceNumber    =   %02x\n", desc->bInterfaceNumber);
        printk("    bAlternateSetting   =   %02x\n", desc->bAlternateSetting);
        printk("    bNumEndpoints       =   %02x\n", desc->bNumEndpoints);
        printk("    bInterface Class:SubClass:Protocol =   %02x:%02x:%02x\n",
                desc->bInterfaceClass, desc->bInterfaceSubClass, desc->bInterfaceProtocol);
        printk("    iInterface          =   %02x\n", desc->iInterface);
}

void usb_show_endpoint_descriptor(struct usb_endpoint_descriptor *desc)
{
        char *LengthCommentString = (desc->bLength ==
                USB_DT_ENDPOINT_AUDIO_SIZE) ? " (Audio)" : (desc->bLength ==
                USB_DT_ENDPOINT_SIZE) ? "" : " (!!!)";
        char *EndpointType[4] = { "Control", "Isochronous", "Bulk", "Interrupt" };

        printk("    Endpoint:\n");
        printk("      bLength             = %4d%s\n",
                desc->bLength, LengthCommentString);
        printk("      bDescriptorType     =   %02x\n", desc->bDescriptorType);
        printk("      bEndpointAddress    =   %02x (%s)\n", desc->bEndpointAddress,
                (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
                        USB_ENDPOINT_XFER_CONTROL ? "i/o" :
                (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? "in" : "out");
        printk("      bmAttributes        =   %02x (%s)\n", desc->bmAttributes,
                EndpointType[USB_ENDPOINT_XFERTYPE_MASK & desc->bmAttributes]);
        printk("      wMaxPacketSize      = %04x\n", desc->wMaxPacketSize);
        printk("      bInterval           =   %02x\n", desc->bInterval);

        /* Audio extensions to the endpoint descriptor */
        if (desc->bLength == USB_DT_ENDPOINT_AUDIO_SIZE) {
                printk("      bRefresh            =   %02x\n", desc->bRefresh);
                printk("      bSynchAddress       =   %02x\n", desc->bSynchAddress);
        }
}

void usb_show_string(struct usb_device *dev, char *id, int index)
{
        char *buf;

        if (!index)
                return;
        if (!(buf = kmalloc(256, GFP_KERNEL)))
                return;
        if (usb_string(dev, index, buf, 256) > 0)
                printk(KERN_INFO "%s: %s\n", id, buf);
        kfree(buf);
}

void usb_dump_urb (struct urb *urb)
{
        printk ("urb                   :%p\n", urb);
        printk ("next                  :%p\n", urb->next);
        printk ("dev                   :%p\n", urb->dev);
        printk ("pipe                  :%08X\n", urb->pipe);
        printk ("status                :%d\n", urb->status);
        printk ("transfer_flags        :%08X\n", urb->transfer_flags);
        printk ("transfer_buffer       :%p\n", urb->transfer_buffer);
        printk ("transfer_buffer_length:%d\n", urb->transfer_buffer_length);
        printk ("actual_length         :%d\n", urb->actual_length);
        printk ("setup_packet          :%p\n", urb->setup_packet);
        printk ("start_frame           :%d\n", urb->start_frame);
        printk ("number_of_packets     :%d\n", urb->number_of_packets);
        printk ("interval              :%d\n", urb->interval);
        printk ("error_count           :%d\n", urb->error_count);
        printk ("context               :%p\n", urb->context);
        printk ("complete              :%p\n", urb->complete);
}