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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/blackfin/include/asm/barrier.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/blackfin/include/asm/barrier.h')
-rw-r--r-- | arch/blackfin/include/asm/barrier.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/barrier.h b/arch/blackfin/include/asm/barrier.h new file mode 100644 index 00000000..ebb18950 --- /dev/null +++ b/arch/blackfin/include/asm/barrier.h @@ -0,0 +1,48 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * Tony Kou (tonyko@lineo.ca) + * + * Licensed under the GPL-2 or later + */ + +#ifndef _BLACKFIN_BARRIER_H +#define _BLACKFIN_BARRIER_H + +#include <asm/cache.h> + +#define nop() __asm__ __volatile__ ("nop;\n\t" : : ) + +/* + * Force strict CPU ordering. + */ +#ifdef CONFIG_SMP + +#ifdef __ARCH_SYNC_CORE_DCACHE +/* Force Core data cache coherence */ +# define mb() do { barrier(); smp_check_barrier(); smp_mark_barrier(); } while (0) +# define rmb() do { barrier(); smp_check_barrier(); } while (0) +# define wmb() do { barrier(); smp_mark_barrier(); } while (0) +# define read_barrier_depends() do { barrier(); smp_check_barrier(); } while (0) +#else +# define mb() barrier() +# define rmb() barrier() +# define wmb() barrier() +# define read_barrier_depends() do { } while (0) +#endif + +#else /* !CONFIG_SMP */ + +#define mb() barrier() +#define rmb() barrier() +#define wmb() barrier() +#define read_barrier_depends() do { } while (0) + +#endif /* !CONFIG_SMP */ + +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() +#define set_mb(var, value) do { var = value; mb(); } while (0) +#define smp_read_barrier_depends() read_barrier_depends() + +#endif /* _BLACKFIN_BARRIER_H */ |