/*=====================================================================================================*/
/* By the time we get here, the device has gotten a new device ID and is in the default state. We need to identify the thing and get the ball rolling..
 * Returns 0 for success, != 0 for error. */
int usb_new_device(struct usb_device *dev, int devnum)
{int err, is_mass_storage=0;
 /* USB v1.1 5.5.3 */
 /* We read the first 8 bytes from the device descriptor to get to  the bMaxPacketSize0 field. Then we set the maximum packet size  for the control pipe, and retrieve the rest */
 dev->epmaxpacketin [0] = 0x40;
 dev->epmaxpacketout[0] = 0x40;
 if(!usb_get_device_descriptor(dev, usb_buf_1, 0x40))				/* получаем стандартный дескриптор устройства */
	{diag_printf("\t%s невозможно получить дескриптор устройства.\n", _EEXCHANGE);return -1;}
 CYGACC_CALL_IF_DELAY_US (1000);
 if((err = usb_set_address(dev, devnum)) < 0)						/* задание устройству адреса на шине */
 if (err < 0)
	{diag_printf("\t%s устройство не принимает назначенный адрес, код ошибки=%d.\n",_EEXCHANGE, err);
	 return -1;
	}
 dev->devnum= devnum;
 CYGACC_CALL_IF_DELAY_US (100000);
 if(!usb_get_device_descriptor(dev, usb_buf_1, 0x40))				/* получаем стандартный дескриптор устройства */
	{return -1;}
 {struct usb_config_descriptor *c_d;									/*  */
  struct usb_interface_descriptor *i_d;
  struct usb_endpoint_descriptor e_d;
  struct usb_descriptor_header *h_d;
  int v, i;
  c_d= (struct usb_config_descriptor *)usb_buf_1;
  if ((err= usb_get_descriptor(dev, USB_DT_CONFIG, 0, usb_buf_1, USB_DT_CONFIG_SIZE)) < 0)
	{diag_printf("\t%s\n", _EEXCHANGE);return -1;}
  if (err < USB_DT_CONFIG_SIZE)
	{diag_printf("\t%s\n", _EEXCHANGE);return -EINVAL;}
  v=c_d->wTotalLength= le16_to_cpu(c_d->wTotalLength);
#ifdef USB_DEBUG
  dump_conf_descriptor(c_d);
#endif
  if ((err= usb_get_descriptor(dev, USB_DT_CONFIG, 0, usb_buf_1, c_d->wTotalLength)) < 0)
	{diag_printf("\t%s\n", _EEXCHANGE);return -1;}
  if (err < v)
		{diag_printf("%s\n", _EEXCHANGE);return -EINVAL;}
  for(i=USB_DT_CONFIG_SIZE; i < v;  i+=h_d->bLength)
	{h_d= (struct usb_descriptor_header *) (((unsigned int)usb_buf_1) + i);
	 switch(h_d->bDescriptorType)
		{case USB_DT_INTERFACE: i_d= (struct usb_interface_descriptor *)h_d;
#ifdef USB_DEBUG
								dump_intf_descriptor((struct usb_interface_descriptor *)h_d);
#endif
								if(i_d->bInterfaceClass != USB_CLASS_MASS_STORAGE)
									{continue;}
								is_mass_storage=1;
								continue;
		 case USB_DT_ENDPOINT:  if(!is_mass_storage)
									continue;
								memcpy(&e_d, h_d, USB_DT_ENDPOINT_SIZE);
								if((e_d.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)!= USB_ENDPOINT_XFER_BULK)
									{
#ifdef USB_DEBUG
									 diag_printf( "endp_desc: не bulk функция (e_d.bmAttributes=0x%02x) - игнорируем.\n", e_d.bmAttributes);
#endif
									 continue;
									}
								e_d.wMaxPacketSize= le16_to_cpu(e_d.wMaxPacketSize);
#ifdef USB_DEBUG
								dump_endp_descriptor(&e_d);
#endif
								if(e_d.bEndpointAddress & USB_DIR_IN)	/* in endpoint */
									{dev->mass_storage_endpoint_in= e_d.bEndpointAddress & 0x7f;
									 dev->epmaxpacketin[dev->mass_storage_endpoint_in]= e_d.wMaxPacketSize;
									 continue;
									}
								dev->mass_storage_endpoint_out= e_d.bEndpointAddress;
								dev->epmaxpacketout[dev->mass_storage_endpoint_out]= e_d.wMaxPacketSize;
								continue;
		 default:				diag_printf( "\tошибка: не поддержаваемый bDescriptorType=0x%02x\n", h_d->bDescriptorType);
								continue;
		}
 	}
 }
 /* we set the default configuration here */
 if((err = usb_set_configuration(dev, 1)) < 0)
	{diag_printf("\t%s [%d] код ошибки %d.\n", _EEXCHANGE, __LINE__, err); return -1;}
 {char s[256];
  if(!dev->descriptor.iManufacturer)dev->descriptor.iManufacturer=1;
  if((err=usb_string(dev, dev->descriptor.iManufacturer, s, 256)) < 0)
	{diag_printf("\t%s [%d] код ошибки %d.\n", _EEXCHANGE, __LINE__, err);return -1;}
  diag_printf("\t- [%s", s);
  if((err=usb_string(dev, dev->descriptor.iProduct, s, 256)) < 0)
	{diag_printf("\t%s [%d] код ошибки %d.\n", _EEXCHANGE, __LINE__, err);return -1;}
  diag_printf("/ %s]\n", s);
 if(!(dev->mass_storage_endpoint_in && dev->mass_storage_endpoint_out) || !is_mass_storage)
	{diag_printf("\t- не usb flash disk/cdrom устройство - игнорируем.\n"); return ENOERR;}
 }
 return usb_storage_probe(dev);
}