ofwvar.h

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    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: releng/8.1/sys/dev/ofw/ofwvar.h 194138 2009-06-14 00:05:38Z marius $
   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 
   58 struct 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 
   81 typedef struct ofw_kobj         *ofw_t;
   82 typedef struct kobj_class       ofw_def_t;
   83 
   84 #define ofw_method_t    kobj_method_t
   85 #define OFWMETHOD       KOBJMETHOD
   86 
   87 #define OFW_DEF(name)   DATA_SET(ofw_set, name)
   88 
   89 #endif /* _DEV_OFW_OFWVAR_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/dev/ofw/ofwvar.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/ofw/ofwvar.h