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) 1999 Apple Computer, Inc.  All rights reserved.
 *
 *  DRI: Josh de Cesare
 *
 */


#ifndef _IOKIT_IOINTERRUPTS_H
#define _IOKIT_IOINTERRUPTS_H

#define kIOInterruptTypeEdge  (0)
#define kIOInterruptTypeLevel (1)

#ifdef __cplusplus

class OSData;
class IOInterruptController;

struct IOInterruptSource {
	IOInterruptController *interruptController;
	OSData                *vectorData;
};
typedef struct IOInterruptSource IOInterruptSource;

#ifdef XNU_KERNEL_PRIVATE

struct IOInterruptSourcePrivate {
	void * vectorBlock;
};
typedef struct IOInterruptSourcePrivate IOInterruptSourcePrivate;

#endif /* XNU_KERNEL_PRIVATE */


#endif /* __cplusplus */

typedef void (*IOInterruptHandler)(void *target, void *refCon,
    void *nub, int source);

#endif /* ! _IOKIT_IOINTERRUPTS_H */