| /* |
| * Copyright (C) 2004-2006 Atmel Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #ifndef __ASM_AVR32_BARRIER_H |
| #define __ASM_AVR32_BARRIER_H |
| |
| #define nop() asm volatile("nop") |
| |
| #define mb() asm volatile("" : : : "memory") |
| #define rmb() mb() |
| #define wmb() asm volatile("sync 0" : : : "memory") |
| #define read_barrier_depends() do { } while(0) |
| #define set_mb(var, value) do { var = value; mb(); } while(0) |
| |
| #ifdef CONFIG_SMP |
| # error "The AVR32 port does not support SMP" |
| #else |
| # define smp_mb() barrier() |
| # define smp_rmb() barrier() |
| # define smp_wmb() barrier() |
| # define smp_read_barrier_depends() do { } while(0) |
| #endif |
| |
| |
| #endif /* __ASM_AVR32_BARRIER_H */ |
