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 *
usbd_lookup_id_by_info(const struct usb_device_id * id,usb_size_t sizeof_id,const struct usbd_lookup_info * info)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
usbd_lookup_id_by_uaa(const struct usb_device_id * id,usb_size_t sizeof_id,struct usb_attach_arg * uaa)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