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1/* 2 * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. 3 * Author: Joerg Roedel <joerg.roedel@amd.com> 4 * Leo Duran <leo.duran@amd.com> 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published 8 * by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 */ 19 20#ifndef _ASM_X86_AMD_IOMMU_H 21#define _ASM_X86_AMD_IOMMU_H 22 23#include <linux/irqreturn.h> 24 25#ifdef CONFIG_AMD_IOMMU 26 27extern int amd_iommu_detect(void); 28 29#else 30 31static inline int amd_iommu_detect(void) { return -ENODEV; } 32 33#endif 34 35#endif /* _ASM_X86_AMD_IOMMU_H */