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 /*------------------------------------------------------------------------* 51 * usbd_lookup_id_by_info 52 * 53 * This functions takes an array of "struct usb_device_id" and tries 54 * to match the entries with the information in "struct usbd_lookup_info". 55 * 56 * NOTE: The "sizeof_id" parameter must be a multiple of the 57 * usb_device_id structure size. Else the behaviour of this function 58 * is undefined. 59 * 60 * Return values: 61 * NULL: No match found. 62 * Else: Pointer to matching entry. 63 *------------------------------------------------------------------------*/ 64 const struct usb_device_id * 65 usbd_lookup_id_by_info(const struct usb_device_id *id, usb_size_t sizeof_id, 66 const struct usbd_lookup_info *info) 67 { 68 const struct usb_device_id *id_end; 69 70 if (id == NULL) { 71 goto done; 72 } 73 id_end = (const void *)(((const uint8_t *)id) + sizeof_id); 74 75 /* 76 * Keep on matching array entries until we find a match or 77 * until we reach the end of the matching array: 78 */ 79 for (; id != id_end; id++) { 80 81 if ((id->match_flag_vendor) && 82 (id->idVendor != info->idVendor)) { 83 continue; 84 } 85 if ((id->match_flag_product) && 86 (id->idProduct != info->idProduct)) { 87 continue; 88 } 89 if ((id->match_flag_dev_lo) && 90 (id->bcdDevice_lo > info->bcdDevice)) { 91 continue; 92 } 93 if ((id->match_flag_dev_hi) && 94 (id->bcdDevice_hi < info->bcdDevice)) { 95 continue; 96 } 97 if ((id->match_flag_dev_class) && 98 (id->bDeviceClass != info->bDeviceClass)) { 99 continue; 100 } 101 if ((id->match_flag_dev_subclass) && 102 (id->bDeviceSubClass != info->bDeviceSubClass)) { 103 continue; 104 } 105 if ((id->match_flag_dev_protocol) && 106 (id->bDeviceProtocol != info->bDeviceProtocol)) { 107 continue; 108 } 109 if ((info->bDeviceClass == 0xFF) && 110 (!(id->match_flag_vendor)) && 111 ((id->match_flag_int_class) || 112 (id->match_flag_int_subclass) || 113 (id->match_flag_int_protocol))) { 114 continue; 115 } 116 if ((id->match_flag_int_class) && 117 (id->bInterfaceClass != info->bInterfaceClass)) { 118 continue; 119 } 120 if ((id->match_flag_int_subclass) && 121 (id->bInterfaceSubClass != info->bInterfaceSubClass)) { 122 continue; 123 } 124 if ((id->match_flag_int_protocol) && 125 (id->bInterfaceProtocol != info->bInterfaceProtocol)) { 126 continue; 127 } 128 /* We found a match! */ 129 return (id); 130 } 131 132 done: 133 return (NULL); 134 } 135 136 /*------------------------------------------------------------------------* 137 * usbd_lookup_id_by_uaa - factored out code 138 * 139 * Return values: 140 * 0: Success 141 * Else: Failure 142 *------------------------------------------------------------------------*/ 143 int 144 usbd_lookup_id_by_uaa(const struct usb_device_id *id, usb_size_t sizeof_id, 145 struct usb_attach_arg *uaa) 146 { 147 id = usbd_lookup_id_by_info(id, sizeof_id, &uaa->info); 148 if (id) { 149 /* copy driver info */ 150 uaa->driver_info = id->driver_info; 151 return (0); 152 } 153 return (ENXIO); 154 } 155