9d292ea16d
This adds a BHND_BUS_GET_ATTACH_TYPE(); the primary use-case is to let chipc make a coarse-grained determination as to whether UART, SPI, etc drivers ought to be attached, and on fullmac devices, whether a real CPU driver ought to be skipped for the ARM core, etc. Tested: * BCM4331 (BHND) * BCM4312 (SIBA) Submitted by: Landon Fuller <landonf@landonf.org> Differential Revision: https://reviews.freebsd.org/D6492
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*-
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* Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <dev/bhnd/bhnd_ids.h>
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#include <dev/bhnd/bhnd.h>
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#include "bhndbvar.h"
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/*
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* bhnd(4) driver mix-in providing a shared common methods for
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* bhnd devices attached via a bhndb bridge.
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*/
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static int
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bhnd_bhndb_read_board_info(device_t dev, device_t child,
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struct bhnd_board_info *info)
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{
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int error;
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/* Initialize with NVRAM-derived values */
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if ((error = bhnd_bus_generic_read_board_info(dev, child, info)))
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return (error);
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/* Let the bridge fill in any additional data */
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return (BHNDB_POPULATE_BOARD_INFO(device_get_parent(dev), dev, info));
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}
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static bhnd_attach_type
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bhnd_bhndb_get_attach_type(device_t dev, device_t child)
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{
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/* It's safe to assume that a bridged device is always an adapter */
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return (BHND_ATTACH_ADAPTER);
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}
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static device_method_t bhnd_bhndb_methods[] = {
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/* BHND interface */
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DEVMETHOD(bhnd_bus_get_attach_type, bhnd_bhndb_get_attach_type),
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DEVMETHOD(bhnd_bus_read_board_info, bhnd_bhndb_read_board_info),
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DEVMETHOD_END
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};
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DEFINE_CLASS_0(bhnd, bhnd_bhndb_driver, bhnd_bhndb_methods, 0);
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