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| author | gonzo <gonzo@FreeBSD.org> | 2013-01-07 20:36:51 +0000 |
|---|---|---|
| committer | gonzo <gonzo@FreeBSD.org> | 2013-01-07 20:36:51 +0000 |
| commit | f7a4165c518f6bbbc49b58d2ae0297ae5c2433a9 (patch) | |
| tree | 20c50b002128b53e1c48ae125128536523eb699f /sys/arm | |
| parent | cf8b6db82046c63e7e237a8856dbac2454090b71 (diff) | |
| download | FreeBSD-src-f7a4165c518f6bbbc49b58d2ae0297ae5c2433a9.zip FreeBSD-src-f7a4165c518f6bbbc49b58d2ae0297ae5c2433a9.tar.gz | |
Implement barriers for AMRv6 and ARMv7
Submitted by: Daisuke Aoyama <aoyama at peach.ne.jp>
Reviewed by: ian, cognet
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/include/atomic.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/sys/arm/include/atomic.h b/sys/arm/include/atomic.h index 1a96176..4862453 100644 --- a/sys/arm/include/atomic.h +++ b/sys/arm/include/atomic.h @@ -47,9 +47,25 @@ #include <machine/cpuconf.h> #endif -#define mb() -#define wmb() -#define rmb() +#if defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__) +#define isb() __asm __volatile("isb" : : : "memory") +#define dsb() __asm __volatile("dsb" : : : "memory") +#define dmb() __asm __volatile("dmb" : : : "memory") +#elif defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6J__) || \ + defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6Z__) || \ + defined (__ARM_ARCH_6ZK__) +#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 isb() +#define dsb() +#define dmb() +#endif + +#define mb() dmb() +#define wmb() dmb() +#define rmb() dmb() #ifndef I32_bit #define I32_bit (1 << 7) /* IRQ disable */ |
