1 /* $FreeBSD$ */ 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 */ 60 static usb_handle_req_t usb_temp_get_desc_w; 61 static usb_temp_setup_by_index_t usb_temp_setup_by_index_w; 62 #if USB_HAVE_COMPAT_LINUX 63 static usb_linux_free_device_t usb_linux_free_device_w; 64 #endif 65 static usb_temp_unsetup_t usb_temp_unsetup_w; 66 static usb_test_quirk_t usb_test_quirk_w; 67 static usb_quirk_ioctl_t usb_quirk_ioctl_w; 68 69 /* global variables */ 70 usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w; 71 usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 72 #if USB_HAVE_COMPAT_LINUX 73 usb_linux_free_device_t *usb_linux_free_device_p = &usb_linux_free_device_w; 74 #endif 75 usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w; 76 usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w; 77 usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 78 devclass_t usb_devclass_ptr; 79 80 static usb_error_t 81 usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index) 82 { 83 return (USB_ERR_INVAL); 84 } 85 86 static uint8_t 87 usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk) 88 { 89 return (0); /* no match */ 90 } 91 92 static int 93 usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td) 94 { 95 return (ENOIOCTL); 96 } 97 98 static usb_error_t 99 usb_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 } 104 105 static void 106 usb_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 113 static void 114 usb_linux_free_device_w(struct usb_device *udev) 115 { 116 /* NOP */ 117 } 118 #endif 119 120 void 121 usb_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 } 134 135 void 136 usb_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 } 150 151 void 152 usb_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 166 void 167 usb_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