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Diffstat (limited to 'arch/unicore32/include/asm/barrier.h')
| -rw-r--r-- | arch/unicore32/include/asm/barrier.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/barrier.h b/arch/unicore32/include/asm/barrier.h new file mode 100644 index 00000000000..a6620e5336b --- /dev/null +++ b/arch/unicore32/include/asm/barrier.h @@ -0,0 +1,28 @@ +/* + * Memory barrier implementations for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_BARRIER_H__ +#define __UNICORE_BARRIER_H__ + +#define isb() __asm__ __volatile__ ("" : : : "memory") +#define dsb() __asm__ __volatile__ ("" : : : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") + +#define mb() barrier() +#define rmb() barrier() +#define wmb() barrier() +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#define read_barrier_depends() do { } while (0) +#define smp_read_barrier_depends() do { } while (0) + +#define set_mb(var, value) do { var = value; smp_mb(); } while (0) + +#endif /* __UNICORE_BARRIER_H__ */ |