1
0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-25 11:37:56 +00:00
freebsd/sys/dev/usb/usb_lookup.c
Andrew Thompson 578d0eff90 MFp4 //depot/projects/usb @159431,159437,159438
- start using the new USB typedefs in the USB core
- Remove usage of USB_ADD_BYTES()

Submitted by:	Hans Petter Selasky
2009-03-20 21:50:54 +00:00

135 lines
4.2 KiB
C

/* $FreeBSD$ */
/*-
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_lookup.h>
/*------------------------------------------------------------------------*
* usb2_lookup_id_by_info
*
* This functions takes an array of "struct usb2_device_id" and tries
* to match the entries with the information in "struct usb2_lookup_info".
*
* NOTE: The "sizeof_id" parameter must be a multiple of the
* usb2_device_id structure size. Else the behaviour of this function
* is undefined.
*
* Return values:
* NULL: No match found.
* Else: Pointer to matching entry.
*------------------------------------------------------------------------*/
const struct usb2_device_id *
usb2_lookup_id_by_info(const struct usb2_device_id *id, usb2_size_t sizeof_id,
const struct usb2_lookup_info *info)
{
const struct usb2_device_id *id_end;
if (id == NULL) {
goto done;
}
id_end = (const void *)(((const uint8_t *)id) + sizeof_id);
/*
* Keep on matching array entries until we find a match or
* until we reach the end of the matching array:
*/
for (; id != id_end; id++) {
if ((id->match_flag_vendor) &&
(id->idVendor != info->idVendor)) {
continue;
}
if ((id->match_flag_product) &&
(id->idProduct != info->idProduct)) {
continue;
}
if ((id->match_flag_dev_lo) &&
(id->bcdDevice_lo > info->bcdDevice)) {
continue;
}
if ((id->match_flag_dev_hi) &&
(id->bcdDevice_hi < info->bcdDevice)) {
continue;
}
if ((id->match_flag_dev_class) &&
(id->bDeviceClass != info->bDeviceClass)) {
continue;
}
if ((id->match_flag_dev_subclass) &&
(id->bDeviceSubClass != info->bDeviceSubClass)) {
continue;
}
if ((id->match_flag_dev_protocol) &&
(id->bDeviceProtocol != info->bDeviceProtocol)) {
continue;
}
if ((info->bDeviceClass == 0xFF) &&
(!(id->match_flag_vendor)) &&
((id->match_flag_int_class) ||
(id->match_flag_int_subclass) ||
(id->match_flag_int_protocol))) {
continue;
}
if ((id->match_flag_int_class) &&
(id->bInterfaceClass != info->bInterfaceClass)) {
continue;
}
if ((id->match_flag_int_subclass) &&
(id->bInterfaceSubClass != info->bInterfaceSubClass)) {
continue;
}
if ((id->match_flag_int_protocol) &&
(id->bInterfaceProtocol != info->bInterfaceProtocol)) {
continue;
}
/* We found a match! */
return (id);
}
done:
return (NULL);
}
/*------------------------------------------------------------------------*
* usb2_lookup_id_by_uaa - factored out code
*
* Return values:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
int
usb2_lookup_id_by_uaa(const struct usb2_device_id *id, usb2_size_t sizeof_id,
struct usb2_attach_arg *uaa)
{
id = usb2_lookup_id_by_info(id, sizeof_id, &uaa->info);
if (id) {
/* copy driver info */
uaa->driver_info = id->driver_info;
return (0);
}
return (ENXIO);
}