1 #ifndef __ASM_MIPS_BARRIER_H_WRAPPER
2 #define __ASM_MIPS_BARRIER_H_WRAPPER 1
4 #include <asm/system.h>
6 #error "Cribbed from linux-2.6/include/asm-mips/barrier.h but untested."
8 /* Not sure whether these really need to be defined, but the conservative
9 * choice seems to be to define them. */
10 #define CONFIG_WEAK_ORDERING 1
11 #define CONFIG_WEAK_REORDERING_BEYOND_LLSC 1
13 #if defined(CONFIG_WEAK_ORDERING) && defined(CONFIG_SMP)
14 #define __WEAK_ORDERING_MB " sync \n"
16 #define __WEAK_ORDERING_MB " \n"
18 #if defined(CONFIG_WEAK_REORDERING_BEYOND_LLSC) && defined(CONFIG_SMP)
19 #define __WEAK_LLSC_MB " sync \n"
21 #define __WEAK_LLSC_MB " \n"
24 #define smp_mb() __asm__ __volatile__(__WEAK_ORDERING_MB : : :"memory")
25 #define smp_rmb() __asm__ __volatile__(__WEAK_ORDERING_MB : : :"memory")
26 #define smp_wmb() __asm__ __volatile__(__WEAK_ORDERING_MB : : :"memory")
29 #endif /* asm/barrier.h */