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1/* FR-V CPU memory barrier definitions
2 *
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#ifndef _ASM_BARRIER_H
13#define _ASM_BARRIER_H
14
15#define nop() asm volatile ("nop"::)
16
17#define mb() asm volatile ("membar" : : :"memory")
18#define rmb() asm volatile ("membar" : : :"memory")
19#define wmb() asm volatile ("membar" : : :"memory")
20#define read_barrier_depends() do { } while (0)
21
22#define smp_mb() barrier()
23#define smp_rmb() barrier()
24#define smp_wmb() barrier()
25#define smp_read_barrier_depends() do {} while(0)
26#define set_mb(var, value) \
27 do { var = (value); barrier(); } while (0)
28
29#endif /* _ASM_BARRIER_H */