source: rtems-libbsd/freebsd/sys/dev/ofw/ofwvar.h @ c1205ee

5-freebsd-12
Last change on this file since c1205ee was c1205ee, checked in by Sebastian Huber <sebastian.huber@…>, on Mar 2, 2017 at 3:29:11 PM

FDT(4): Port to RTEMS

  • Property mode set to 100644
File size: 2.8 KB
Line 
1/*-
2 * Copyright (c) 2005 Peter Grehan
3 * Copyright (c) 2008 Nathan Whitehorn
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD$
28 */
29
30#ifndef _DEV_OFW_OFWVAR_H_
31#define _DEV_OFW_OFWVAR_H_
32
33/*
34 * An Open Firmware client implementation is declared with a kernel object and
35 * an associated method table, similar to a device driver.
36 *
37 * e.g.
38 *
39 * static ofw_method_t fdt_methods[] = {
40 *      OFWMETHOD(ofw_init,             fdt_init),
41 *      OFWMETHOD(ofw_finddevice,       fdt_finddevice),
42 *  ...
43 *      OFWMETHOD(ofw_nextprop,         fdt_nextprop),
44 *      { 0, 0 }
45 * };
46 *
47 * static ofw_def_t ofw_fdt = {
48 *      "ofw_fdt",
49 *      fdt_methods,
50 *      sizeof(fdt_softc),      // or 0 if no softc
51 * };
52 *
53 * OFW_DEF(ofw_fdt);
54 */
55
56#include <sys/kobj.h>
57
58struct ofw_kobj {
59        /*
60         * An OFW instance is a kernel object.
61         */
62        KOBJ_FIELDS;
63
64        /*
65         * Utility elements that an instance may use
66         */
67        struct mtx      ofw_mtx;        /* available for instance use */
68        void            *ofw_iptr;      /* instance data pointer */
69
70        /*
71         * Opaque data that can be overlaid with an instance-private
72         * structure.  OFW code can test that this is large enough at
73         * compile time with a sizeof() test againt it's softc.  There
74         * is also a run-time test when the MMU kernel object is
75         * registered.
76         */
77#define OFW_OPAQUESZ    64
78        u_int           ofw_opaque[OFW_OPAQUESZ];
79};
80
81typedef struct ofw_kobj         *ofw_t;
82typedef struct kobj_class       ofw_def_t;
83#ifdef __rtems__
84extern ofw_def_t ofw_fdt;
85#endif /* __rtems__ */
86
87#define ofw_method_t    kobj_method_t
88#define OFWMETHOD       KOBJMETHOD
89
90#define OFW_DEF(name)   DATA_SET(ofw_set, name)
91
92#endif /* _DEV_OFW_OFWVAR_H_ */
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