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/*
* 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/version.h>
#include <linux/kernel.h>
#define DEBUG
#include "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)
{
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_hid_descriptor(struct usb_hid_descriptor * desc)
{
int i;
printk(" HID:\n");
printk(" HID version %x.%02x\n", desc->bcdHID >> 8, desc->bcdHID & 0xff);
printk(" bLength = %4d\n", desc->bLength);
printk(" bDescriptorType = %02x\n", desc->bDescriptorType);
printk(" bCountryCode = %02x\n", desc->bCountryCode);
printk(" bNumDescriptors = %02x\n", desc->bNumDescriptors);
for (i=0; i<desc->bNumDescriptors; i++) {
printk(" %d:\n", i);
printk(" bDescriptorType = %02x\n", desc->desc[i].bDescriptorType);
printk(" wDescriptorLength = %04x\n", desc->desc[i].wDescriptorLength);
}
}
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->bEndpointAddress & 0x80) ? "in" : "out");
printk(" bmAttributes = %02x (%s)\n", desc->bmAttributes,
EndpointType[3 & 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 *p = usb_string(dev, index);
if (p != 0)
printk(KERN_INFO "%s: %s\n", id, p);
}
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