1/* $FreeBSD: releng/11.0/sys/dev/usb/usb_dynamic.c 290135 2015-10-29 08:28:39Z hselasky $ */ 2/*- 3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#ifdef USB_GLOBAL_INCLUDE_FILE 28#include USB_GLOBAL_INCLUDE_FILE 29#else 30#include <sys/stdint.h> 31#include <sys/stddef.h> 32#include <sys/param.h> 33#include <sys/queue.h> 34#include <sys/types.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#include <sys/bus.h> 38#include <sys/module.h> 39#include <sys/lock.h> 40#include <sys/mutex.h> 41#include <sys/condvar.h> 42#include <sys/sysctl.h> 43#include <sys/sx.h> 44#include <sys/unistd.h> 45#include <sys/callout.h> 46#include <sys/malloc.h> 47#include <sys/priv.h> 48 49#include <dev/usb/usb.h> 50#include <dev/usb/usbdi.h> 51 52#include <dev/usb/usb_core.h> 53#include <dev/usb/usb_process.h> 54#include <dev/usb/usb_device.h> 55#include <dev/usb/usb_dynamic.h> 56#include <dev/usb/usb_request.h> 57#endif /* USB_GLOBAL_INCLUDE_FILE */ 58 59/* function prototypes */ 60static usb_handle_req_t usb_temp_get_desc_w; 61static usb_temp_setup_by_index_t usb_temp_setup_by_index_w; 62#if USB_HAVE_COMPAT_LINUX 63static usb_linux_free_device_t usb_linux_free_device_w; 64#endif 65static usb_temp_unsetup_t usb_temp_unsetup_w; 66static usb_test_quirk_t usb_test_quirk_w; 67static usb_quirk_ioctl_t usb_quirk_ioctl_w; 68 69/* global variables */ 70usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w; 71usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 72#if USB_HAVE_COMPAT_LINUX 73usb_linux_free_device_t *usb_linux_free_device_p = &usb_linux_free_device_w; 74#endif 75usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w; 76usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w; 77usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 78devclass_t usb_devclass_ptr; 79 80static usb_error_t 81usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index) 82{ 83 return (USB_ERR_INVAL); 84} 85 86static uint8_t 87usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk) 88{ 89 return (0); /* no match */ 90} 91 92static int 93usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td) 94{ 95 return (ENOIOCTL); 96} 97 98static usb_error_t 99usb_temp_get_desc_w(struct usb_device *udev, struct usb_device_request *req, const void **pPtr, uint16_t *pLength) 100{ 101 /* stall */ 102 return (USB_ERR_STALLED); 103} 104 105static void 106usb_temp_unsetup_w(struct usb_device *udev) 107{ 108 usbd_free_config_desc(udev, udev->usb_template_ptr); 109 udev->usb_template_ptr = NULL; 110} 111 112#if USB_HAVE_COMPAT_LINUX 113static void 114usb_linux_free_device_w(struct usb_device *udev) 115{ 116 /* NOP */ 117} 118#endif 119 120void 121usb_quirk_unload(void *arg) 122{ 123 /* reset function pointers */ 124 125 usb_test_quirk_p = &usb_test_quirk_w; 126 usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 127 128 /* wait for CPU to exit the loaded functions, if any */ 129 130 /* XXX this is a tradeoff */ 131 132 pause("WAIT", hz); 133} 134 135void 136usb_temp_unload(void *arg) 137{ 138 /* reset function pointers */ 139 140 usb_temp_get_desc_p = &usb_temp_get_desc_w; 141 usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 142 usb_temp_unsetup_p = &usb_temp_unsetup_w; 143 144 /* wait for CPU to exit the loaded functions, if any */ 145 146 /* XXX this is a tradeoff */ 147 148 pause("WAIT", hz); 149} 150 151void 152usb_bus_unload(void *arg) 153{ 154 /* reset function pointers */ 155 156 usb_devclass_ptr = NULL; 157 158 /* wait for CPU to exit the loaded functions, if any */ 159 160 /* XXX this is a tradeoff */ 161 162 pause("WAIT", hz); 163} 164 165#if USB_HAVE_COMPAT_LINUX 166void 167usb_linux_unload(void *arg) 168{ 169 /* reset function pointers */ 170 171 usb_linux_free_device_p = &usb_linux_free_device_w; 172 173 /* wait for CPU to exit the loaded functions, if any */ 174 175 /* XXX this is a tradeoff */ 176 177 pause("WAIT", hz); 178} 179#endif 180