include/linux/amd-iommu.h

   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
  27 extern int amd_iommu_detect(void);
  28
  29 #else
  30
  31 static inline int amd_iommu_detect(void) { return -ENODEV; }
  32
  33 #endif
  34
  35 #endif /* _ASM_X86_AMD_IOMMU_H */