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backends/iommufd: Introduce TYPE_HOST_IOMMU_DEVICE_IOMMUFD[_VFIO] devices

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TYPE_HOST_IOMMU_DEVICE_IOMMUFD represents a host IOMMU device under
iommufd backend. It is abstract, because it is going to be derived
into VFIO or VDPA type'd device.

It will have its own .get_cap() implementation.

TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO is a sub-class of
TYPE_HOST_IOMMU_DEVICE_IOMMUFD, represents a VFIO type'd host IOMMU
device under iommufd backend. It will be created during VFIO device
attaching and passed to vIOMMU.

It will have its own .realize() implementation.

Opportunistically, add missed header to include/sysemu/iommufd.h.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Yi Liu <yi.l.liu@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>
This commit is contained in:
Zhenzhong Duan 2024-06-05 16:30:30 +08:00 • committed by Cédric Le Goater
parent 0533739ece
commit 9005f92844
4 changed files with 41 additions and 18 deletions
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35
backends/iommufd.c
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@ -208,23 +208,24 @@ int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id,
return ret;
}
static const TypeInfo iommufd_backend_info = {
.name = TYPE_IOMMUFD_BACKEND,
.parent = TYPE_OBJECT,
.instance_size = sizeof(IOMMUFDBackend),
.instance_init = iommufd_backend_init,
.instance_finalize = iommufd_backend_finalize,
.class_size = sizeof(IOMMUFDBackendClass),
.class_init = iommufd_backend_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_USER_CREATABLE },
{ }
static const TypeInfo types[] = {
{
.name = TYPE_IOMMUFD_BACKEND,
.parent = TYPE_OBJECT,
.instance_size = sizeof(IOMMUFDBackend),
.instance_init = iommufd_backend_init,
.instance_finalize = iommufd_backend_finalize,
.class_size = sizeof(IOMMUFDBackendClass),
.class_init = iommufd_backend_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_USER_CREATABLE },
{ }
}
}, {
.name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD,
.parent = TYPE_HOST_IOMMU_DEVICE,
.abstract = true,
}
};
static void register_types(void)
{
type_register_static(&iommufd_backend_info);
}
type_init(register_types);
DEFINE_TYPES(types)