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