This is xnu-8019. See this file in:
/*
 * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
 *
 * HISTORY
 *
 */

#ifndef _IOKIT_IODEVICETREE_H
#define _IOKIT_IODEVICETREE_H

#include <IOKit/IORegistryEntry.h>
#include <libkern/c++/OSData.h>
#include <libkern/c++/OSPtr.h>

class IODeviceMemory;
class IOService;

extern const IORegistryPlane *  gIODTPlane;

extern const OSSymbol *         gIODTPHandleKey;

extern const OSSymbol *         gIODTCompatibleKey;
extern const OSSymbol *         gIODTTypeKey;
extern const OSSymbol *         gIODTModelKey;
extern const OSSymbol *         gIODTBridgeModelKey;
extern const OSSymbol *         gIODTTargetTypeKey;

extern const OSSymbol *         gIODTAAPLInterruptsKey;
extern const OSSymbol *         gIODTDefaultInterruptController;
extern const OSSymbol *         gIODTNWInterruptMappingKey;

LIBKERN_RETURNS_NOT_RETAINED IORegistryEntry * IODeviceTreeAlloc( void * dtTop );


bool IODTMatchNubWithKeys( IORegistryEntry * nub,
    const char * keys );

bool IODTCompareNubName( const IORegistryEntry * regEntry,
    OSString * name,
    LIBKERN_RETURNS_RETAINED_ON_NONZERO OSString ** matchingName );
bool IODTCompareNubName( const IORegistryEntry * regEntry,
    OSString * name,
    OSSharedPtr<OSString>& matchingName );

enum {
	kIODTRecursive      = 0x00000001,
	kIODTExclusive      = 0x00000002
};

OSCollectionIterator * IODTFindMatchingEntries( IORegistryEntry * from,
    IOOptionBits options, const char * keys );

#if !defined(__arm64__)
typedef SInt32 (*IODTCompareAddressCellFunc)
(UInt32 cellCount, UInt32 left[], UInt32 right[]);
#else
typedef SInt64 (*IODTCompareAddressCellFunc)
(UInt32 cellCount, UInt32 left[], UInt32 right[]);
#endif

typedef void (*IODTNVLocationFunc)
(IORegistryEntry * entry,
    UInt8 * busNum, UInt8 * deviceNum, UInt8 * functionNum );

void IODTSetResolving( IORegistryEntry *        regEntry,
    IODTCompareAddressCellFunc      compareFunc,
    IODTNVLocationFunc              locationFunc );

void IODTGetCellCounts( IORegistryEntry * regEntry,
    UInt32 * sizeCount, UInt32 * addressCount);

bool IODTResolveAddressCell( IORegistryEntry * regEntry,
    UInt32 cellsIn[],
    IOPhysicalAddress * phys, IOPhysicalLength * len );

LIBKERN_RETURNS_NOT_RETAINED OSArray *
IODTResolveAddressing( IORegistryEntry * regEntry,
    const char * addressPropertyName,
    IODeviceMemory * parent );

struct IONVRAMDescriptor {
	unsigned int format:4;
	unsigned int marker:1;
	unsigned int bridgeCount:3;
	unsigned int busNum:2;
	unsigned int bridgeDevices:6 * 5;
	unsigned int functionNum:3;
	unsigned int deviceNum:5;
} __attribute__((aligned(2), packed));

IOReturn IODTMakeNVDescriptor( IORegistryEntry * regEntry,
    IONVRAMDescriptor * hdr );

LIBKERN_RETURNS_NOT_RETAINED OSData *
IODTFindSlotName( IORegistryEntry * regEntry, UInt32 deviceNumber );

const OSSymbol * IODTInterruptControllerName(
	IORegistryEntry * regEntry );

bool IODTMapInterrupts( IORegistryEntry * regEntry );

enum {
	kIODTInterruptShared = 0x00000001
};
IOReturn IODTGetInterruptOptions( IORegistryEntry * regEntry, int source, IOOptionBits * options );

#ifdef __cplusplus
extern "C" {
#endif

IOReturn IONDRVLibrariesInitialize( IOService * provider );

#ifdef __cplusplus
}
#endif

#endif /* _IOKIT_IODEVICETREE_H */