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 */ 62 static usb_handle_req_t usb_temp_get_desc_w; 63 static usb_temp_setup_by_index_t usb_temp_setup_by_index_w; 64 #if USB_HAVE_COMPAT_LINUX 65 static usb_linux_free_device_t usb_linux_free_device_w; 66 #endif 67 static usb_temp_unsetup_t usb_temp_unsetup_w; 68 static usb_test_quirk_t usb_test_quirk_w; 69 static usb_quirk_ioctl_t usb_quirk_ioctl_w; 70 71 /* global variables */ 72 usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w; 73 usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 74 #if USB_HAVE_COMPAT_LINUX 75 usb_linux_free_device_t *usb_linux_free_device_p = &usb_linux_free_device_w; 76 #endif 77 usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w; 78 usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w; 79 usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 80 devclass_t usb_devclass_ptr; 81 82 static usb_error_t 83 usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index) 84 { 85 return (USB_ERR_INVAL); 86 } 87 88 static uint8_t 89 usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk) 90 { 91 return (0); /* no match */ 92 } 93 94 static int 95 usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td) 96 { 97 return (ENOIOCTL); 98 } 99 100 static usb_error_t 101 usb_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 } 106 107 static void 108 usb_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 115 static void 116 usb_linux_free_device_w(struct usb_device *udev) 117 { 118 /* NOP */ 119 } 120 #endif 121 122 void 123 usb_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 } 136 137 void 138 usb_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 } 152 153 void 154 usb_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 168 void 169 usb_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