freebsd-dev/sys/dev/bhnd/bhndb/bhnd_bhndb.c

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/*-
* Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <dev/bhnd/bhnd_ids.h>
#include <dev/bhnd/bhnd.h>
#include "bhndbvar.h"
/*
* bhnd(4) driver mix-in providing a shared common methods for
* bhnd devices attached via a bhndb bridge.
*/
static int
bhnd_bhndb_read_board_info(device_t dev, device_t child,
struct bhnd_board_info *info)
{
int error;
/* Initialize with NVRAM-derived values */
if ((error = bhnd_bus_generic_read_board_info(dev, child, info)))
return (error);
/* Let the bridge fill in any additional data */
return (BHNDB_POPULATE_BOARD_INFO(device_get_parent(dev), dev, info));
}
static bhnd_attach_type
bhnd_bhndb_get_attach_type(device_t dev, device_t child)
{
/* It's safe to assume that a bridged device is always an adapter */
return (BHND_ATTACH_ADAPTER);
}
static device_method_t bhnd_bhndb_methods[] = {
/* BHND interface */
DEVMETHOD(bhnd_bus_get_attach_type, bhnd_bhndb_get_attach_type),
DEVMETHOD(bhnd_bus_read_board_info, bhnd_bhndb_read_board_info),
DEVMETHOD_END
};
DEFINE_CLASS_0(bhnd, bhnd_bhndb_driver, bhnd_bhndb_methods, 0);