1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice unmodified, this list of conditions, and the following
13 *    disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef	_LINUXKPI_LINUX_RWSEM_H_
30#define	_LINUXKPI_LINUX_RWSEM_H_
31
32#include "linux/semaphore.h"
33
34#ifdef __cplusplus
35#if __cplusplus
36extern "C" {
37#endif /* __cplusplus */
38#endif /* __cplusplus */
39
40#define down_read(sem)           _sema_lock((losMutexDef_t*)(sem))
41#define down_read_trylock(sem)   _sema_trylock((losMutexDef_t*)(sem))
42#define down_write(sem)          _sema_lock((losMutexDef_t*)(sem))
43#define down_write_trylock(sem)  _sema_trylock((losMutexDef_t*)(sem))
44#define up_read(sem)             _sema_unlock((losMutexDef_t*)(sem))
45#define up_write(sem)            _sema_unlock((losMutexDef_t*)(sem))
46#define downgrade_write(sem)
47
48#ifdef __cplusplus
49#if __cplusplus
50}
51#endif /* __cplusplus */
52#endif /* __cplusplus */
53
54#endif /* _LINUXKPI_LINUX_RWSEM_H_ */
55