1 /* 1
2 * This file is subject to the terms and condi
3 * License. See the file "COPYING" in the mai
4 * for more details.
5 *
6 * Copyright (C) 2001 - 2012 Tensilica Inc.
7 */
8
9 #ifndef _XTENSA_SYSTEM_H
10 #define _XTENSA_SYSTEM_H
11
12 #include <asm/core.h>
13
14 #define __mb() ({ __asm__ __volatile__("memw"
15 #define __rmb() barrier()
16 #define __wmb() __mb()
17
18 #ifdef CONFIG_SMP
19 #define __smp_mb() __mb()
20 #define __smp_rmb() __rmb()
21 #define __smp_wmb() __wmb()
22 #endif
23
24 #if XCHAL_HAVE_S32C1I
25 #define __smp_mb__before_atomic()
26 #define __smp_mb__after_atomic()
27 #endif
28
29 #include <asm-generic/barrier.h>
30
31 #endif /* _XTENSA_SYSTEM_H */
32
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