1/* $FreeBSD$ */ 2/*- 3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4 * 5 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#ifdef USB_GLOBAL_INCLUDE_FILE 30#include USB_GLOBAL_INCLUDE_FILE 31#else 32#include <sys/stdint.h> 33#include <sys/stddef.h> 34#include <sys/param.h> 35#include <sys/queue.h> 36#include <sys/types.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/bus.h> 40#include <sys/module.h> 41#include <sys/lock.h> 42#include <sys/mutex.h> 43#include <sys/condvar.h> 44#include <sys/sysctl.h> 45#include <sys/sx.h> 46#include <sys/unistd.h> 47#include <sys/callout.h> 48#include <sys/malloc.h> 49#include <sys/priv.h> 50 51#include <dev/usb/usb.h> 52#include <dev/usb/usbdi.h> 53 54#include <dev/usb/usb_core.h> 55#include <dev/usb/usb_process.h> 56#include <dev/usb/usb_device.h> 57#include <dev/usb/usb_dynamic.h> 58#include <dev/usb/usb_request.h> 59#endif /* USB_GLOBAL_INCLUDE_FILE */ 60 61/* function prototypes */ 62static usb_handle_req_t usb_temp_get_desc_w; 63static usb_temp_setup_by_index_t usb_temp_setup_by_index_w; 64#if USB_HAVE_COMPAT_LINUX 65static usb_linux_free_device_t usb_linux_free_device_w; 66#endif 67static usb_temp_unsetup_t usb_temp_unsetup_w; 68static usb_test_quirk_t usb_test_quirk_w; 69static usb_quirk_ioctl_t usb_quirk_ioctl_w; 70 71/* global variables */ 72usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w; 73usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 74#if USB_HAVE_COMPAT_LINUX 75usb_linux_free_device_t *usb_linux_free_device_p = &usb_linux_free_device_w; 76#endif 77usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w; 78usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w; 79usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 80devclass_t usb_devclass_ptr; 81 82static usb_error_t 83usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index) 84{ 85 return (USB_ERR_INVAL); 86} 87 88static uint8_t 89usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk) 90{ 91 return (0); /* no match */ 92} 93 94static int 95usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td) 96{ 97 return (ENOIOCTL); 98} 99 100static usb_error_t 101usb_temp_get_desc_w(struct usb_device *udev, struct usb_device_request *req, const void **pPtr, uint16_t *pLength) 102{ 103 /* stall */ 104 return (USB_ERR_STALLED); 105} 106 107static void 108usb_temp_unsetup_w(struct usb_device *udev) 109{ 110 usbd_free_config_desc(udev, udev->usb_template_ptr); 111 udev->usb_template_ptr = NULL; 112} 113 114#if USB_HAVE_COMPAT_LINUX 115static void 116usb_linux_free_device_w(struct usb_device *udev) 117{ 118 /* NOP */ 119} 120#endif 121 122void 123usb_quirk_unload(void *arg) 124{ 125 /* reset function pointers */ 126 127 usb_test_quirk_p = &usb_test_quirk_w; 128 usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 129 130 /* wait for CPU to exit the loaded functions, if any */ 131 132 /* XXX this is a tradeoff */ 133 134 pause("WAIT", hz); 135} 136 137void 138usb_temp_unload(void *arg) 139{ 140 /* reset function pointers */ 141 142 usb_temp_get_desc_p = &usb_temp_get_desc_w; 143 usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 144 usb_temp_unsetup_p = &usb_temp_unsetup_w; 145 146 /* wait for CPU to exit the loaded functions, if any */ 147 148 /* XXX this is a tradeoff */ 149 150 pause("WAIT", hz); 151} 152 153void 154usb_bus_unload(void *arg) 155{ 156 /* reset function pointers */ 157 158 usb_devclass_ptr = NULL; 159 160 /* wait for CPU to exit the loaded functions, if any */ 161 162 /* XXX this is a tradeoff */ 163 164 pause("WAIT", hz); 165} 166 167#if USB_HAVE_COMPAT_LINUX 168void 169usb_linux_unload(void *arg) 170{ 171 /* reset function pointers */ 172 173 usb_linux_free_device_p = &usb_linux_free_device_w; 174 175 /* wait for CPU to exit the loaded functions, if any */ 176 177 /* XXX this is a tradeoff */ 178 179 pause("WAIT", hz); 180} 181#endif 182