1f9aa7e18SDavid Howells /* 2f9aa7e18SDavid Howells * This file is subject to the terms and conditions of the GNU General Public 3f9aa7e18SDavid Howells * License. See the file "COPYING" in the main directory of this archive 4f9aa7e18SDavid Howells * for more details. 5f9aa7e18SDavid Howells * 6599bf77aSMax Filippov * Copyright (C) 2001 - 2012 Tensilica Inc. 7f9aa7e18SDavid Howells */ 8f9aa7e18SDavid Howells 9f9aa7e18SDavid Howells #ifndef _XTENSA_SYSTEM_H 10f9aa7e18SDavid Howells #define _XTENSA_SYSTEM_H 11f9aa7e18SDavid Howells 12f7c34874SMax Filippov #include <asm/core.h> 13f7c34874SMax Filippov 14*725aea87SMax Filippov #define __mb() ({ __asm__ __volatile__("memw" : : : "memory"); }) 15*725aea87SMax Filippov #define __rmb() barrier() 16*725aea87SMax Filippov #define __wmb() __mb() 17*725aea87SMax Filippov 18*725aea87SMax Filippov #ifdef CONFIG_SMP 19*725aea87SMax Filippov #define __smp_mb() __mb() 20*725aea87SMax Filippov #define __smp_rmb() __rmb() 21*725aea87SMax Filippov #define __smp_wmb() __wmb() 22*725aea87SMax Filippov #endif 23f9aa7e18SDavid Howells 24f7c34874SMax Filippov #if XCHAL_HAVE_S32C1I 251ce79091SMichael S. Tsirkin #define __smp_mb__before_atomic() barrier() 261ce79091SMichael S. Tsirkin #define __smp_mb__after_atomic() barrier() 27f7c34874SMax Filippov #endif 2809a01c0cSPeter Zijlstra 2993ea02bbSPeter Zijlstra #include <asm-generic/barrier.h> 30f9aa7e18SDavid Howells 31f9aa7e18SDavid Howells #endif /* _XTENSA_SYSTEM_H */ 32