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