0feae533dd
When iommu=pt is passed on kernel command line the devices should run untranslated. This requires the allocation of a special domain for that purpose. This patch implements the allocation and initialization path for iommu=pt. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/*
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* Copyright (C) 2007-2008 Advanced Micro Devices, Inc.
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* Author: Joerg Roedel <joerg.roedel@amd.com>
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* Leo Duran <leo.duran@amd.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _ASM_X86_AMD_IOMMU_H
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#define _ASM_X86_AMD_IOMMU_H
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#include <linux/irqreturn.h>
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#ifdef CONFIG_AMD_IOMMU
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extern int amd_iommu_init(void);
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extern int amd_iommu_init_dma_ops(void);
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extern int amd_iommu_init_passthrough(void);
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extern void amd_iommu_detect(void);
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extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
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extern void amd_iommu_flush_all_domains(void);
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extern void amd_iommu_flush_all_devices(void);
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extern void amd_iommu_shutdown(void);
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#else
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static inline int amd_iommu_init(void) { return -ENODEV; }
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static inline void amd_iommu_detect(void) { }
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static inline void amd_iommu_shutdown(void) { }
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#endif
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#endif /* _ASM_X86_AMD_IOMMU_H */
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