1 /* 2 * Copyright (C) 2004-2006 Atmel Corporation 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 #ifndef __ASM_AVR32_BARRIER_H 9 #define __ASM_AVR32_BARRIER_H 10 11 /* 12 * Weirdest thing ever.. no full barrier, but it has a write barrier! 13 */ 14 #define wmb() asm volatile("sync 0" : : : "memory") 15 16 #ifdef CONFIG_SMP 17 # error "The AVR32 port does not support SMP" 18 #endif 19 20 #include <asm-generic/barrier.h> 21 22 #endif /* __ASM_AVR32_BARRIER_H */ 23