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 #include <sys/stdint.h> 28 #include <sys/stddef.h> 29 #include <sys/param.h> 30 #include <sys/queue.h> 31 #include <sys/types.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 #include <sys/linker_set.h> 36 #include <sys/module.h> 37 #include <sys/lock.h> 38 #include <sys/mutex.h> 39 #include <sys/condvar.h> 40 #include <sys/sysctl.h> 41 #include <sys/sx.h> 42 #include <sys/unistd.h> 43 #include <sys/callout.h> 44 #include <sys/malloc.h> 45 #include <sys/priv.h> 46 47 #include <dev/usb/usb.h> 48 #include <dev/usb/usbdi.h> 49 50 #include <dev/usb/usb_core.h> 51 #include <dev/usb/usb_process.h> 52 #include <dev/usb/usb_device.h> 53 #include <dev/usb/usb_dynamic.h> 54 55 /* function prototypes */ 56 static usb_handle_req_t usb_temp_get_desc_w; 57 static usb_temp_setup_by_index_t usb_temp_setup_by_index_w; 58 static usb_temp_unsetup_t usb_temp_unsetup_w; 59 static usb_test_quirk_t usb_test_quirk_w; 60 static usb_quirk_ioctl_t usb_quirk_ioctl_w; 61 62 /* global variables */ 63 usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w; 64 usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 65 usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w; 66 usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w; 67 usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 68 devclass_t usb_devclass_ptr = NULL; 69 70 static usb_error_t 71 usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index) 72 { 73 return (USB_ERR_INVAL); 74 } 75 76 static uint8_t 77 usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk) 78 { 79 return (0); /* no match */ 80 } 81 82 static int 83 usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td) 84 { 85 return (ENOIOCTL); 86 } 87 88 static usb_error_t 89 usb_temp_get_desc_w(struct usb_device *udev, struct usb_device_request *req, const void **pPtr, uint16_t *pLength) 90 { 91 /* stall */ 92 return (USB_ERR_STALLED); 93 } 94 95 static void 96 usb_temp_unsetup_w(struct usb_device *udev) 97 { 98 if (udev->usb_template_ptr) { 99 100 free(udev->usb_template_ptr, M_USB); 101 102 udev->usb_template_ptr = NULL; 103 } 104 } 105 106 void 107 usb_quirk_unload(void *arg) 108 { 109 /* reset function pointers */ 110 111 usb_test_quirk_p = &usb_test_quirk_w; 112 usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 113 114 /* wait for CPU to exit the loaded functions, if any */ 115 116 /* XXX this is a tradeoff */ 117 118 pause("WAIT", hz); 119 } 120 121 void 122 usb_temp_unload(void *arg) 123 { 124 /* reset function pointers */ 125 126 usb_temp_get_desc_p = &usb_temp_get_desc_w; 127 usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 128 usb_temp_unsetup_p = &usb_temp_unsetup_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_bus_unload(void *arg) 139 { 140 /* reset function pointers */ 141 142 usb_devclass_ptr = NULL; 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