| /* | 
 |  * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. | 
 |  * Author: Joerg Roedel <joerg.roedel@amd.com> | 
 |  *         Leo Duran <leo.duran@amd.com> | 
 |  * | 
 |  * 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. | 
 |  * | 
 |  * This program is distributed in the hope that it will be useful, | 
 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
 |  * GNU General Public License for more details. | 
 |  * | 
 |  * You should have received a copy of the GNU General Public License | 
 |  * along with this program; if not, write to the Free Software | 
 |  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA | 
 |  */ | 
 |  | 
 | #ifndef _ASM_X86_AMD_IOMMU_H | 
 | #define _ASM_X86_AMD_IOMMU_H | 
 |  | 
 | #include <linux/irqreturn.h> | 
 |  | 
 | #ifdef CONFIG_AMD_IOMMU | 
 |  | 
 | extern int amd_iommu_detect(void); | 
 |  | 
 | #else | 
 |  | 
 | static inline int amd_iommu_detect(void) { return -ENODEV; } | 
 |  | 
 | #endif | 
 |  | 
 | #endif /* _ASM_X86_AMD_IOMMU_H */ |