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- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 - 2012 Tensilica Inc.
- */
- #ifndef _XTENSA_SYSTEM_H
- #define _XTENSA_SYSTEM_H
- #include <asm/core.h>
- #define __mb() ({ __asm__ __volatile__("memw" : : : "memory"); })
- #define __rmb() barrier()
- #define __wmb() __mb()
- #ifdef CONFIG_SMP
- #define __smp_mb() __mb()
- #define __smp_rmb() __rmb()
- #define __smp_wmb() __wmb()
- #endif
- #if XCHAL_HAVE_S32C1I
- #define __smp_mb__before_atomic() barrier()
- #define __smp_mb__after_atomic() barrier()
- #endif
- #include <asm-generic/barrier.h>
- #endif /* _XTENSA_SYSTEM_H */
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