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| author | Catalin Marinas <catalin.marinas@arm.com> | 2007-02-05 14:47:35 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-08 14:49:15 +0000 |
| commit | dcda7e4ba1adec80089ec784964b32f9fd653237 (patch) | |
| tree | bb533911e91ce7a96464f2603638f3c0500bf9c9 /include/asm-arm/system.h | |
| parent | ae0a846e411dc0b568e8ccda584896310ee5f369 (diff) | |
| download | blackbird-op-linux-dcda7e4ba1adec80089ec784964b32f9fd653237.tar.gz blackbird-op-linux-dcda7e4ba1adec80089ec784964b32f9fd653237.zip | |
[ARM] 4126/1: Add the ARM specific barriers
There are three barriers - ISB, DMB and DSB for different
scenarious. This patch adds their definitions in the system.h file.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/system.h')
| -rw-r--r-- | include/asm-arm/system.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h index aa223fc546af..e5aa372beb94 100644 --- a/include/asm-arm/system.h +++ b/include/asm-arm/system.h @@ -193,11 +193,19 @@ extern unsigned int user_debug; #endif #if __LINUX_ARM_ARCH__ >= 6 -#define mb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ - : : "r" (0) : "memory") +#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ + : : "r" (0) : "memory") +#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ + : : "r" (0) : "memory") +#define dmb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ + : : "r" (0) : "memory") #else -#define mb() __asm__ __volatile__ ("" : : : "memory") +#define isb() __asm__ __volatile__ ("" : : : "memory") +#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ + : : "r" (0) : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") #endif +#define mb() dmb() #define rmb() mb() #define wmb() mb() #define read_barrier_depends() do { } while(0) |
