90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*-
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* Copyright (c) 2005 Peter Grehan
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* Copyright (c) 2008 Nathan Whitehorn
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DEV_OFW_OFWVAR_H_
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#define _DEV_OFW_OFWVAR_H_
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/*
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* An Open Firmware client implementation is declared with a kernel object and
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* an associated method table, similar to a device driver.
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*
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* e.g.
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*
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* static ofw_method_t fdt_methods[] = {
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* OFWMETHOD(ofw_init, fdt_init),
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* OFWMETHOD(ofw_finddevice, fdt_finddevice),
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* ...
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* OFWMETHOD(ofw_nextprop, fdt_nextprop),
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* { 0, 0 }
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* };
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*
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* static ofw_def_t ofw_fdt = {
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* "ofw_fdt",
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* fdt_methods,
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* sizeof(fdt_softc), // or 0 if no softc
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* };
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*
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* OFW_DEF(ofw_fdt);
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*/
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#include <sys/kobj.h>
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struct ofw_kobj {
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/*
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* An OFW instance is a kernel object.
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*/
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KOBJ_FIELDS;
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/*
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* Utility elements that an instance may use
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*/
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struct mtx ofw_mtx; /* available for instance use */
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void *ofw_iptr; /* instance data pointer */
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/*
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* Opaque data that can be overlaid with an instance-private
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* structure. OFW code can test that this is large enough at
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* compile time with a sizeof() test againt it's softc. There
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* is also a run-time test when the MMU kernel object is
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* registered.
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*/
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#define OFW_OPAQUESZ 64
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u_int ofw_opaque[OFW_OPAQUESZ];
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};
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typedef struct ofw_kobj *ofw_t;
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typedef struct kobj_class ofw_def_t;
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#define ofw_method_t kobj_method_t
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#define OFWMETHOD KOBJMETHOD
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#define OFW_DEF(name) DATA_SET(ofw_set, name)
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#endif /* _DEV_OFW_OFWVAR_H_ */
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