/*
* Copyright (c) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, 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 DAMAGE.
*/
#ifndef KERN_OFW_TREE_H_
#define KERN_OFW_TREE_H_
#include <stdbool.h>
#include <typedefs.h>
#define OFW_TREE_PROPERTY_MAX_NAMELEN 32
typedef uint32_t phandle;
/** Memory representation of OpenFirmware device tree node property. */
typedef struct {
char name[OFW_TREE_PROPERTY_MAX_NAMELEN];
size_t size;
void *value;
} ofw_tree_property_t;
/** Memory representation of OpenFirmware device tree node. */
typedef struct ofw_tree_node {
struct ofw_tree_node *parent;
struct ofw_tree_node *peer;
struct ofw_tree_node *child;
phandle node_handle; /**< Old OpenFirmware node handle. */
char *da_name; /**< Disambigued name. */
size_t properties; /**< Number of properties. */
ofw_tree_property_t *property;
/**
* Pointer to a structure representing respective device.
* Its semantics is device dependent.
*/
void *device;
} ofw_tree_node_t;
/* Walker for visiting OpenFirmware device tree nodes. */
typedef bool (*ofw_tree_walker_t)(ofw_tree_node_t *, void *);
extern void ofw_tree_init(ofw_tree_node_t *);
extern void ofw_sysinfo_map(void);
extern const char *ofw_tree_node_name(const ofw_tree_node_t *);
extern ofw_tree_node_t *ofw_tree_lookup(const char *);
extern ofw_tree_property_t *ofw_tree_getprop(const ofw_tree_node_t *,
const char *);
extern void ofw_tree_walk_by_device_type(const char *, ofw_tree_walker_t,
void *);
extern ofw_tree_node_t *ofw_tree_find_child(ofw_tree_node_t *, const char *);
extern ofw_tree_node_t *ofw_tree_find_child_by_device_type(ofw_tree_node_t *,
const char *);
extern ofw_tree_node_t *ofw_tree_find_peer_by_device_type(ofw_tree_node_t *,
const char *);
extern ofw_tree_node_t *ofw_tree_find_peer_by_name(ofw_tree_node_t *,
const char *);
extern ofw_tree_node_t *ofw_tree_find_node_by_handle(ofw_tree_node_t *,
phandle);
#endif