1cf5fd573f
Instead of searching the device tree every time, one static variable is declared for the default system x86 IOMMU device. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
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* Common IOMMU interface for X86 platform
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*
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* Copyright (C) 2016 Peter Xu, Red Hat <peterx@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef IOMMU_COMMON_H
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#define IOMMU_COMMON_H
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#include "hw/sysbus.h"
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#define TYPE_X86_IOMMU_DEVICE ("x86-iommu")
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#define X86_IOMMU_DEVICE(obj) \
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OBJECT_CHECK(X86IOMMUState, (obj), TYPE_X86_IOMMU_DEVICE)
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#define X86_IOMMU_CLASS(klass) \
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OBJECT_CLASS_CHECK(X86IOMMUClass, (klass), TYPE_X86_IOMMU_DEVICE)
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#define X86_IOMMU_GET_CLASS(obj) \
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OBJECT_GET_CLASS(X86IOMMUClass, obj, TYPE_X86_IOMMU_DEVICE)
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#define X86_IOMMU_PCI_DEVFN_MAX 256
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typedef struct X86IOMMUState X86IOMMUState;
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typedef struct X86IOMMUClass X86IOMMUClass;
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struct X86IOMMUClass {
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SysBusDeviceClass parent;
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/* Intel/AMD specific realize() hook */
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DeviceRealize realize;
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};
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struct X86IOMMUState {
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SysBusDevice busdev;
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};
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/**
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* x86_iommu_get_default - get default IOMMU device
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* @return: pointer to default IOMMU device
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*/
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X86IOMMUState *x86_iommu_get_default(void);
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#endif
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