text: /* $FreeBSD$ */
  /*-
   * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
   */
  
  #include <sys/stdint.h>
  #include <sys/param.h>
  #include <sys/queue.h>
  #include <sys/types.h>
  #include <sys/systm.h>
  #include <sys/kernel.h>
  #include <sys/bus.h>
  #include <sys/module.h>
  #include <sys/lock.h>
  #include <sys/mutex.h>
  #include <sys/condvar.h>
  #include <sys/sysctl.h>
  #include <sys/unistd.h>
  #include <sys/callout.h>
  #include <sys/malloc.h>
  #include <sys/priv.h>
  
  #include <bus/u4b/usb.h>
  #include <bus/u4b/usbdi.h>
  
  #include <bus/u4b/usb_core.h>
  #include <bus/u4b/usb_process.h>
  #include <bus/u4b/usb_device.h>
  #include <bus/u4b/usb_dynamic.h>
  
  /* function prototypes */
  static usb_handle_req_t usb_temp_get_desc_w;
  static usb_temp_setup_by_index_t usb_temp_setup_by_index_w;
  static usb_temp_unsetup_t usb_temp_unsetup_w;
  static usb_test_quirk_t usb_test_quirk_w;
  static usb_quirk_ioctl_t usb_quirk_ioctl_w;
  
  /* global variables */
  usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w;
  usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w;
  usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w;
  usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w;
  usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w;
  devclass_t usb_devclass_ptr = NULL;
  
  static usb_error_t
  usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index)
  {
  	return (USB_ERR_INVAL);
  }
  
  static uint8_t
  usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk)
  {
  	return (0);			/* no match */
  }
  
  static int
  usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td)
  {
  	return (ENOIOCTL);
  }
  
  static usb_error_t
  usb_temp_get_desc_w(struct usb_device *udev, struct usb_device_request *req, const void **pPtr, uint16_t *pLength)
  {
  	/* stall */
  	return (USB_ERR_STALLED);
  }
  
  static void
  usb_temp_unsetup_w(struct usb_device *udev)
  {
  	if (udev->usb_template_ptr) {
  
  		kfree(udev->usb_template_ptr, M_USB);
  
  		udev->usb_template_ptr = NULL;
  	}
  }
  
  void
  usb_quirk_unload(void *arg)
  {
  	/* reset function pointers */
  
  	usb_test_quirk_p = &usb_test_quirk_w;
  	usb_quirk_ioctl_p = &usb_quirk_ioctl_w;
  
  	/* wait for CPU to exit the loaded functions, if any */
  
  	/* XXX this is a tradeoff */
  
  	tsleep(usb_quirk_unload, 0, "WAIT", hz);
  }
  
  void
  usb_temp_unload(void *arg)
  {
  	/* reset function pointers */
  
  	usb_temp_get_desc_p = &usb_temp_get_desc_w;
  	usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w;
  	usb_temp_unsetup_p = &usb_temp_unsetup_w;
  
  	/* wait for CPU to exit the loaded functions, if any */
  
  	/* XXX this is a tradeoff */
  
  	tsleep(usb_quirk_unload, 0, "WAIT", hz);
  }
  
  void
  usb_bus_unload(void *arg)
  {
  	/* reset function pointers */
  
  	usb_devclass_ptr = NULL;
  
  	/* wait for CPU to exit the loaded functions, if any */
  
  	/* XXX this is a tradeoff */
  
  	tsleep(usb_quirk_unload, 0, "WAIT", hz);
  }
  