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vfio/iommufd: Implement HostIOMMUDeviceClass::realize() handler 

It calls iommufd_backend_get_device_info() to get host IOMMU
related information and translate it into HostIOMMUDeviceCaps
for query with .get_cap().

For aw_bits, use the same way as legacy backend by calling
vfio_device_get_aw_bits() which is common for different vendor
IOMMU.

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 16:30:34 +08:00 committed by Cédric Le Goater
parent 42965386ea
commit 9305895201
1 changed files with 30 additions and 0 deletions
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30
hw/vfio/iommufd.c
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@ -619,6 +619,35 @@ static void vfio_iommu_iommufd_class_init(ObjectClass *klass, void *data)
vioc->pci_hot_reset = iommufd_cdev_pci_hot_reset;
};
static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque,
Error **errp)
{
VFIODevice *vdev = opaque;
HostIOMMUDeviceCaps *caps = &hiod->caps;
enum iommu_hw_info_type type;
union {
struct iommu_hw_info_vtd vtd;
} data;
if (!iommufd_backend_get_device_info(vdev->iommufd, vdev->devid,
&type, &data, sizeof(data), errp)) {
return false;
}
hiod->name = g_strdup(vdev->name);
caps->type = type;
caps->aw_bits = vfio_device_get_aw_bits(vdev);
return true;
}
static void hiod_iommufd_vfio_class_init(ObjectClass *oc, void *data)
{
HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
hiodc->realize = hiod_iommufd_vfio_realize;
};
static const TypeInfo types[] = {
{
.name = TYPE_VFIO_IOMMU_IOMMUFD,
@ -627,6 +656,7 @@ static const TypeInfo types[] = {
}, {
.name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO,
.parent = TYPE_HOST_IOMMU_DEVICE_IOMMUFD,
.class_init = hiod_iommufd_vfio_class_init,
}
};