sys/bus/u4b/usb_lookup.c

   1 /* $FreeBSD: head/sys/dev/usb/usb_lookup.c 246194 2013-02-01 07:05:43Z hselasky $ */
   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 #include <sys/limits.h>
  44 #include <sys/endian.h>
  45
  46 #include <bus/u4b/usb.h>
  47 #include <bus/u4b/usbdi.h>
  48
  49 /*------------------------------------------------------------------------*
  50  *      usbd_lookup_id_by_info
  51  *
  52  * This functions takes an array of "struct usb_device_id" and tries
  53  * to match the entries with the information in "struct usbd_lookup_info".
  54  *
  55  * NOTE: The "sizeof_id" parameter must be a multiple of the
  56  * usb_device_id structure size. Else the behaviour of this function
  57  * is undefined.
  58  *
  59  * Return values:
  60  * NULL: No match found.
  61  * Else: Pointer to matching entry.
  62  *------------------------------------------------------------------------*/
  63 const struct usb_device_id *
  64 usbd_lookup_id_by_info(const struct usb_device_id *id, usb_size_t sizeof_id,
  65     const struct usbd_lookup_info *info)
  66 {
  67         const struct usb_device_id *id_end;
  68
  69         if (id == NULL) {
  70                 goto done;
  71         }
  72         id_end = (const void *)(((const uint8_t *)id) + sizeof_id);
  73
  74         /*
  75          * Keep on matching array entries until we find a match or
  76          * until we reach the end of the matching array:
  77          */
  78         for (; id != id_end; id++) {
  79
  80                 if ((id->match_flag_vendor) &&
  81                     (id->idVendor != info->idVendor)) {
  82                         continue;
  83                 }
  84                 if ((id->match_flag_product) &&
  85                     (id->idProduct != info->idProduct)) {
  86                         continue;
  87                 }
  88                 if ((id->match_flag_dev_lo) &&
  89                     (id->bcdDevice_lo > info->bcdDevice)) {
  90                         continue;
  91                 }
  92                 if ((id->match_flag_dev_hi) &&
  93                     (id->bcdDevice_hi < info->bcdDevice)) {
  94                         continue;
  95                 }
  96                 if ((id->match_flag_dev_class) &&
  97                     (id->bDeviceClass != info->bDeviceClass)) {
  98                         continue;
  99                 }
 100                 if ((id->match_flag_dev_subclass) &&
 101                     (id->bDeviceSubClass != info->bDeviceSubClass)) {
 102                         continue;
 103                 }
 104                 if ((id->match_flag_dev_protocol) &&
 105                     (id->bDeviceProtocol != info->bDeviceProtocol)) {
 106                         continue;
 107                 }
 108                 if ((id->match_flag_int_class) &&
 109                     (id->bInterfaceClass != info->bInterfaceClass)) {
 110                         continue;
 111                 }
 112                 if ((id->match_flag_int_subclass) &&
 113                     (id->bInterfaceSubClass != info->bInterfaceSubClass)) {
 114                         continue;
 115                 }
 116                 if ((id->match_flag_int_protocol) &&
 117                     (id->bInterfaceProtocol != info->bInterfaceProtocol)) {
 118                         continue;
 119                 }
 120                 /* We found a match! */
 121                 return (id);
 122         }
 123
 124 done:
 125         return (NULL);
 126 }
 127
 128 /*------------------------------------------------------------------------*
 129  *      usbd_lookup_id_by_uaa - factored out code
 130  *
 131  * Return values:
 132  *    0: Success
 133  * Else: Failure
 134  *------------------------------------------------------------------------*/
 135 int
 136 usbd_lookup_id_by_uaa(const struct usb_device_id *id, usb_size_t sizeof_id,
 137     struct usb_attach_arg *uaa)
 138 {
 139         id = usbd_lookup_id_by_info(id, sizeof_id, &uaa->info);
 140         if (id) {
 141                 /* copy driver info */
 142                 uaa->driver_info = id->driver_info;
 143                 return (0);
 144         }
 145         return (ENXIO);
 146 }
 147
 148 /*------------------------------------------------------------------------*
 149  *      Export the USB device ID format we use to userspace tools.
 150  *------------------------------------------------------------------------*/
 151 #if BYTE_ORDER == BIG_ENDIAN
 152 #define U16_XOR "8"
 153 #define U32_XOR "12"
 154 #define U64_XOR "56"
 155 #define U8_BITFIELD_XOR "7"
 156 #define U16_BITFIELD_XOR "15"
 157 #define U32_BITFIELD_XOR "31"
 158 #define U64_BITFIELD_XOR "63"
 159 #else
 160 #define U16_XOR "0"
 161 #define U32_XOR "0"
 162 #define U64_XOR "0"
 163 #define U8_BITFIELD_XOR "0"
 164 #define U16_BITFIELD_XOR "0"
 165 #define U32_BITFIELD_XOR "0"
 166 #define U64_BITFIELD_XOR "0"
 167 #endif
 168
 169 #if USB_HAVE_COMPAT_LINUX
 170 #define MFL_SIZE "1"
 171 #else
 172 #define MFL_SIZE "0"
 173 #endif
 174
 175 #if defined(KLD_MODULE) && (USB_HAVE_ID_SECTION != 0)
 176 static const char __section("bus_autoconf_format") __used usb_id_format[] = {
 177
 178         /* Declare that three different sections use the same format */
 179
 180         "usb_host_id{256,:}"
 181         "usb_device_id{256,:}"
 182         "usb_dual_id{256,:}"
 183
 184         /* List size of fields in the usb_device_id structure */
 185
 186 #if ULONG_MAX >= 0xFFFFFFFFUL
 187         "unused{0,8}"
 188         "unused{0,8}"
 189         "unused{0,8}"
 190         "unused{0,8}"
 191 #if ULONG_MAX >= 0xFFFFFFFFFFFFFFFFULL
 192         "unused{0,8}"
 193         "unused{0,8}"
 194         "unused{0,8}"
 195         "unused{0,8}"
 196 #endif
 197 #else
 198 #error "Please update code."
 199 #endif
 200
 201         "idVendor[0]{" U16_XOR ",8}"
 202         "idVendor[1]{" U16_XOR ",8}"
 203         "idProduct[0]{" U16_XOR ",8}"
 204         "idProduct[1]{" U16_XOR ",8}"
 205         "bcdDevice_lo[0]{" U16_XOR ",8}"
 206         "bcdDevice_lo[1]{" U16_XOR ",8}"
 207         "bcdDevice_hi[0]{" U16_XOR ",8}"
 208         "bcdDevice_hi[1]{" U16_XOR ",8}"
 209
 210         "bDeviceClass{0,8}"
 211         "bDeviceSubClass{0,8}"
 212         "bDeviceProtocol{0,8}"
 213         "bInterfaceClass{0,8}"
 214         "bInterfaceSubClass{0,8}"
 215         "bInterfaceProtocol{0,8}"
 216
 217         "mf_vendor{" U8_BITFIELD_XOR ",1}"
 218         "mf_product{" U8_BITFIELD_XOR ",1}"
 219         "mf_dev_lo{" U8_BITFIELD_XOR ",1}"
 220         "mf_dev_hi{" U8_BITFIELD_XOR ",1}"
 221
 222         "mf_dev_class{" U8_BITFIELD_XOR ",1}"
 223         "mf_dev_subclass{" U8_BITFIELD_XOR ",1}"
 224         "mf_dev_protocol{" U8_BITFIELD_XOR ",1}"
 225         "mf_int_class{" U8_BITFIELD_XOR ",1}"
 226
 227         "mf_int_subclass{" U8_BITFIELD_XOR ",1}"
 228         "mf_int_protocol{" U8_BITFIELD_XOR ",1}"
 229         "unused{" U8_BITFIELD_XOR ",6}"
 230
 231         "mfl_vendor{" U16_XOR "," MFL_SIZE "}"
 232         "mfl_product{" U16_XOR "," MFL_SIZE "}"
 233         "mfl_dev_lo{" U16_XOR "," MFL_SIZE "}"
 234         "mfl_dev_hi{" U16_XOR "," MFL_SIZE "}"
 235
 236         "mfl_dev_class{" U16_XOR "," MFL_SIZE "}"
 237         "mfl_dev_subclass{" U16_XOR "," MFL_SIZE "}"
 238         "mfl_dev_protocol{" U16_XOR "," MFL_SIZE "}"
 239         "mfl_int_class{" U16_XOR "," MFL_SIZE "}"
 240
 241         "mfl_int_subclass{" U16_XOR "," MFL_SIZE "}"
 242         "mfl_int_protocol{" U16_XOR "," MFL_SIZE "}"
 243         "unused{" U16_XOR "," MFL_SIZE "}"
 244         "unused{" U16_XOR "," MFL_SIZE "}"
 245
 246         "unused{" U16_XOR "," MFL_SIZE "}"
 247         "unused{" U16_XOR "," MFL_SIZE "}"
 248         "unused{" U16_XOR "," MFL_SIZE "}"
 249         "unused{" U16_XOR "," MFL_SIZE "}"
 250 };
 251 #endif