1 /* $FreeBSD$ */ 2 /*- 3 * SPDX-License-Identifier: BSD-2-Clause 4 * 5 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifdef USB_GLOBAL_INCLUDE_FILE 30 #include USB_GLOBAL_INCLUDE_FILE 31 #else 32 #include <sys/stdint.h> 33 #include <sys/stddef.h> 34 #include <sys/param.h> 35 #include <sys/queue.h> 36 #include <sys/types.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/bus.h> 40 #include <sys/module.h> 41 #include <sys/lock.h> 42 #include <sys/mutex.h> 43 #include <sys/condvar.h> 44 #include <sys/sysctl.h> 45 #include <sys/sx.h> 46 #include <sys/unistd.h> 47 #include <sys/callout.h> 48 #include <sys/malloc.h> 49 #include <sys/priv.h> 50 #include <sys/limits.h> 51 #include <sys/endian.h> 52 53 #include <dev/usb/usb.h> 54 #include <dev/usb/usbdi.h> 55 #endif /* USB_GLOBAL_INCLUDE_FILE */ 56 57 /*------------------------------------------------------------------------* 58 * usbd_lookup_id_by_info 59 * 60 * This functions takes an array of "struct usb_device_id" and tries 61 * to match the entries with the information in "struct usbd_lookup_info". 62 * 63 * NOTE: The "sizeof_id" parameter must be a multiple of the 64 * usb_device_id structure size. Else the behaviour of this function 65 * is undefined. 66 * 67 * Return values: 68 * NULL: No match found. 69 * Else: Pointer to matching entry. 70 *------------------------------------------------------------------------*/ 71 const struct usb_device_id * 72 usbd_lookup_id_by_info(const struct usb_device_id *id, usb_size_t sizeof_id, 73 const struct usbd_lookup_info *info) 74 { 75 const struct usb_device_id *id_end; 76 77 if (id == NULL) { 78 goto done; 79 } 80 id_end = (const void *)(((const uint8_t *)id) + sizeof_id); 81 82 /* 83 * Keep on matching array entries until we find a match or 84 * until we reach the end of the matching array: 85 */ 86 for (; id != id_end; id++) { 87 if ((id->match_flag_vendor) && 88 (id->idVendor != info->idVendor)) { 89 continue; 90 } 91 if ((id->match_flag_product) && 92 (id->idProduct != info->idProduct)) { 93 continue; 94 } 95 if ((id->match_flag_dev_lo) && 96 (id->bcdDevice_lo > info->bcdDevice)) { 97 continue; 98 } 99 if ((id->match_flag_dev_hi) && 100 (id->bcdDevice_hi < info->bcdDevice)) { 101 continue; 102 } 103 if ((id->match_flag_dev_class) && 104 (id->bDeviceClass != info->bDeviceClass)) { 105 continue; 106 } 107 if ((id->match_flag_dev_subclass) && 108 (id->bDeviceSubClass != info->bDeviceSubClass)) { 109 continue; 110 } 111 if ((id->match_flag_dev_protocol) && 112 (id->bDeviceProtocol != info->bDeviceProtocol)) { 113 continue; 114 } 115 if ((id->match_flag_int_class) && 116 (id->bInterfaceClass != info->bInterfaceClass)) { 117 continue; 118 } 119 if ((id->match_flag_int_subclass) && 120 (id->bInterfaceSubClass != info->bInterfaceSubClass)) { 121 continue; 122 } 123 if ((id->match_flag_int_protocol) && 124 (id->bInterfaceProtocol != info->bInterfaceProtocol)) { 125 continue; 126 } 127 /* We found a match! */ 128 return (id); 129 } 130 131 done: 132 return (NULL); 133 } 134 135 /*------------------------------------------------------------------------* 136 * usbd_lookup_id_by_uaa - factored out code 137 * 138 * Return values: 139 * 0: Success 140 * Else: Failure 141 *------------------------------------------------------------------------*/ 142 int 143 usbd_lookup_id_by_uaa(const struct usb_device_id *id, usb_size_t sizeof_id, 144 struct usb_attach_arg *uaa) 145 { 146 id = usbd_lookup_id_by_info(id, sizeof_id, &uaa->info); 147 if (id) { 148 /* copy driver info */ 149 uaa->driver_info = id->driver_info; 150 return (0); 151 } 152 return (ENXIO); 153 } 154