42965386ea
Introduce a helper function iommufd_backend_get_device_info() to get host IOMMU related information through iommufd uAPI. Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/*
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* iommufd container backend declaration
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*
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* Copyright (C) 2024 Intel Corporation.
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* Copyright Red Hat, Inc. 2024
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*
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* Authors: Yi Liu <yi.l.liu@intel.com>
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* Eric Auger <eric.auger@redhat.com>
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* Zhenzhong Duan <zhenzhong.duan@intel.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef SYSEMU_IOMMUFD_H
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#define SYSEMU_IOMMUFD_H
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#include "qom/object.h"
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#include "exec/hwaddr.h"
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#include "exec/cpu-common.h"
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#include "sysemu/host_iommu_device.h"
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#define TYPE_IOMMUFD_BACKEND "iommufd"
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OBJECT_DECLARE_TYPE(IOMMUFDBackend, IOMMUFDBackendClass, IOMMUFD_BACKEND)
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struct IOMMUFDBackendClass {
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ObjectClass parent_class;
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};
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struct IOMMUFDBackend {
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Object parent;
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/*< protected >*/
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int fd; /* /dev/iommu file descriptor */
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bool owned; /* is the /dev/iommu opened internally */
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uint32_t users;
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/*< public >*/
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};
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bool iommufd_backend_connect(IOMMUFDBackend *be, Error **errp);
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void iommufd_backend_disconnect(IOMMUFDBackend *be);
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bool iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id,
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Error **errp);
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void iommufd_backend_free_id(IOMMUFDBackend *be, uint32_t id);
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int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova,
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ram_addr_t size, void *vaddr, bool readonly);
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int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id,
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hwaddr iova, ram_addr_t size);
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bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
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uint32_t *type, void *data, uint32_t len,
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Error **errp);
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#define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd"
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#endif
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