162306a36Sopenharmony_ci/* 262306a36Sopenharmony_ci * This file is subject to the terms and conditions of the GNU General Public 362306a36Sopenharmony_ci * License. See the file "COPYING" in the main directory of this archive 462306a36Sopenharmony_ci * for more details. 562306a36Sopenharmony_ci * 662306a36Sopenharmony_ci * Copyright (C) 2001 - 2012 Tensilica Inc. 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifndef _XTENSA_SYSTEM_H 1062306a36Sopenharmony_ci#define _XTENSA_SYSTEM_H 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include <asm/core.h> 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci#define __mb() ({ __asm__ __volatile__("memw" : : : "memory"); }) 1562306a36Sopenharmony_ci#define __rmb() barrier() 1662306a36Sopenharmony_ci#define __wmb() __mb() 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci#ifdef CONFIG_SMP 1962306a36Sopenharmony_ci#define __smp_mb() __mb() 2062306a36Sopenharmony_ci#define __smp_rmb() __rmb() 2162306a36Sopenharmony_ci#define __smp_wmb() __wmb() 2262306a36Sopenharmony_ci#endif 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci#if XCHAL_HAVE_S32C1I 2562306a36Sopenharmony_ci#define __smp_mb__before_atomic() barrier() 2662306a36Sopenharmony_ci#define __smp_mb__after_atomic() barrier() 2762306a36Sopenharmony_ci#endif 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci#include <asm-generic/barrier.h> 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci#endif /* _XTENSA_SYSTEM_H */ 32