mutex.h revision 1.9 
1/*	$NetBSD: mutex.h,v 1.9 2023/07/11 09:34:34 martin Exp $	*/
2
3/*-
4 * Copyright (c) 2002, 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe and Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _SPARC64_MUTEX_H_
33#define	_SPARC64_MUTEX_H_
34
35#ifdef __MUTEX_PRIVATE
36#include <machine/intr.h>
37#include <machine/lock.h>
38#include <machine/psl.h>
39#endif
40
41struct kmutex {
42	union {
43		volatile uintptr_t	mtxa_owner;
44#ifdef __MUTEX_PRIVATE
45		struct {
46			uint8_t			mtxs_unused;
47                        __cpu_simple_lock_t	mtxs_lock;
48			ipl_cookie_t		mtxs_ipl;
49			uint8_t			mtxs_dummy;
50		} s;
51#endif
52	} u;
53};
54
55#ifdef __MUTEX_PRIVATE
56
57#define	mtx_owner 			u.mtxa_owner
58#define	mtx_ipl 			u.s.mtxs_ipl
59#define	mtx_lock			u.s.mtxs_lock
60
61#define __HAVE_MUTEX_STUBS		1
62#define	__HAVE_SIMPLE_MUTEXES		1
63
64#endif	/* __MUTEX_PRIVATE */
65
66#endif /* _SPARC64_MUTEX_H_ */
67