| #ifndef _H8300_BARRIER_H |
| #define _H8300_BARRIER_H |
| |
| #define nop() asm volatile ("nop"::) |
| |
| /* |
| * Force strict CPU ordering. |
| * Not really required on H8... |
| */ |
| #define mb() asm volatile ("" : : :"memory") |
| #define rmb() asm volatile ("" : : :"memory") |
| #define wmb() asm volatile ("" : : :"memory") |
| #define set_mb(var, value) do { xchg(&var, value); } while (0) |
| |
| #ifdef CONFIG_SMP |
| #define smp_mb() mb() |
| #define smp_rmb() rmb() |
| #define smp_wmb() wmb() |
| #define smp_read_barrier_depends() read_barrier_depends() |
| #else |
| #define smp_mb() barrier() |
| #define smp_rmb() barrier() |
| #define smp_wmb() barrier() |
| #define smp_read_barrier_depends() do { } while(0) |
| #endif |
| |
| #endif /* _H8300_BARRIER_H */ |
