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/param.h> 29 #include <sys/queue.h> 30 #include <sys/types.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/bus.h> 34 #include <sys/module.h> 35 #include <sys/lock.h> 36 #include <sys/mutex.h> 37 #include <sys/condvar.h> 38 #include <sys/sysctl.h> 39 #include <sys/unistd.h> 40 #include <sys/callout.h> 41 #include <sys/malloc.h> 42 #include <sys/priv.h> 43 44 #include <bus/u4b/usb.h> 45 #include <bus/u4b/usbdi.h> 46 47 #include <bus/u4b/usb_core.h> 48 #include <bus/u4b/usb_process.h> 49 #include <bus/u4b/usb_device.h> 50 #include <bus/u4b/usb_dynamic.h> 51 #include <bus/u4b/usb_request.h> 52 53 /* function prototypes */ 54 static usb_handle_req_t usb_temp_get_desc_w; 55 static usb_temp_setup_by_index_t usb_temp_setup_by_index_w; 56 static usb_temp_unsetup_t usb_temp_unsetup_w; 57 static usb_test_quirk_t usb_test_quirk_w; 58 static usb_quirk_ioctl_t usb_quirk_ioctl_w; 59 60 /* global variables */ 61 usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w; 62 usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 63 usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w; 64 usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w; 65 usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 66 devclass_t usb_devclass_ptr = NULL; 67 68 static usb_error_t 69 usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index) 70 { 71 return (USB_ERR_INVAL); 72 } 73 74 static uint8_t 75 usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk) 76 { 77 return (0); /* no match */ 78 } 79 80 static int 81 usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td) 82 { 83 return (ENOIOCTL); 84 } 85 86 static usb_error_t 87 usb_temp_get_desc_w(struct usb_device *udev, struct usb_device_request *req, const void **pPtr, uint16_t *pLength) 88 { 89 /* stall */ 90 return (USB_ERR_STALLED); 91 } 92 93 static void 94 usb_temp_unsetup_w(struct usb_device *udev) 95 { 96 if(udev->usb_template_ptr) { 97 usbd_free_config_desc(udev, udev->usb_template_ptr); 98 udev->usb_template_ptr = NULL; 99 } 100 } 101 102 void 103 usb_quirk_unload(void *arg) 104 { 105 /* reset function pointers */ 106 107 usb_test_quirk_p = &usb_test_quirk_w; 108 usb_quirk_ioctl_p = &usb_quirk_ioctl_w; 109 110 /* wait for CPU to exit the loaded functions, if any */ 111 112 /* XXX this is a tradeoff */ 113 114 tsleep(usb_quirk_unload, 0, "WAIT", hz); 115 } 116 117 void 118 usb_temp_unload(void *arg) 119 { 120 /* reset function pointers */ 121 122 usb_temp_get_desc_p = &usb_temp_get_desc_w; 123 usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w; 124 usb_temp_unsetup_p = &usb_temp_unsetup_w; 125 126 /* wait for CPU to exit the loaded functions, if any */ 127 128 /* XXX this is a tradeoff */ 129 130 tsleep(usb_quirk_unload, 0, "WAIT", hz); 131 } 132 133 void 134 usb_bus_unload(void *arg) 135 { 136 /* reset function pointers */ 137 138 usb_devclass_ptr = NULL; 139 140 /* wait for CPU to exit the loaded functions, if any */ 141 142 /* XXX this is a tradeoff */ 143 144 tsleep(usb_quirk_unload, 0, "WAIT", hz); 145 } 146