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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/kernel.h>
#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 *interface)
{
int i;
usb_show_interface_descriptor(interface);
for (i = 0 ; i < interface->bNumEndpoints; i++)
usb_show_endpoint(interface->endpoint + i);
}
static void usb_show_config(struct usb_config_descriptor *config)
{
int i, j;
struct usb_alternate_setting *as;
usb_show_config_descriptor(config);
for (i = 0; i < config->num_altsetting; i++) {
as = config->altsetting + i;
if ((as) == NULL)
break;
printk("\n Alternate Setting: %d\n", i);
for (j = 0 ; j < config->bNumInterfaces; j++)
usb_show_interface(as->interface + 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(" USB version %x.%02x\n", desc->bcdUSB >> 8, desc->bcdUSB & 0xff);
printk(" Vendor: %04x\n", desc->idVendor);
printk(" Product: %04x\n", desc->idProduct);
printk(" Configurations: %d\n", desc->bNumConfigurations);
printk(" Device Class: %d\n", desc->bDeviceClass);
switch (desc->bDeviceClass) {
case 0:
printk(" Per-interface classes\n");
break;
case 9:
printk(" Hub device class\n");
break;
case 0xff:
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 == 9 ? "" : " (!!!)");
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(" Interface:\n");
printk(" bLength = %4d%s\n", desc->bLength,
desc->bLength == 9 ? "" : " (!!!)");
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(" bInterfaceClass = %02x\n", desc->bInterfaceClass);
printk(" bInterfaceSubClass = %02x\n", desc->bInterfaceSubClass);
printk(" bInterfaceProtocol = %02x\n", desc->bInterfaceProtocol);
printk(" iInterface = %02x\n", desc->iInterface);
}
void usb_show_endpoint_descriptor(struct usb_endpoint_descriptor * desc)
{
char *EndpointType[4] = { "Control", "Isochronous", "Bulk", "Interrupt" };
printk(" Endpoint:\n");
printk(" bLength = %4d%s\n", desc->bLength,
desc->bLength == 7 ? "" : " (!!!)");
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);
}
void usb_show_hub_descriptor(struct usb_hub_descriptor * desc)
{
int len = 7;
unsigned char *ptr = (unsigned char *) desc;
printk("Interface:");
while (len) {
printk(" %02x", *ptr);
ptr++; len--;
}
printk("\n");
}
void usb_show_string(struct usb_device* dev, char *id, int index)
{
if (index <= dev->maxstring && dev->stringindex && dev->stringindex[index])
printk("%s: %s\n", id, dev->stringindex[index]);
}
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