vfio/container: Implement HostIOMMUDeviceClass::get_cap() handler
Suggested-by: Cédric Le Goater <clg@redhat.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>
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index 2f62c13..99beeba 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -1147,11 +1147,26 @@
return true;
}
+static int hiod_legacy_vfio_get_cap(HostIOMMUDevice *hiod, int cap,
+ Error **errp)
+{
+ HostIOMMUDeviceCaps *caps = &hiod->caps;
+
+ switch (cap) {
+ case HOST_IOMMU_DEVICE_CAP_AW_BITS:
+ return caps->aw_bits;
+ default:
+ error_setg(errp, "%s: unsupported capability %x", hiod->name, cap);
+ return -EINVAL;
+ }
+}
+
static void hiod_legacy_vfio_class_init(ObjectClass *oc, void *data)
{
HostIOMMUDeviceClass *hioc = HOST_IOMMU_DEVICE_CLASS(oc);
hioc->realize = hiod_legacy_vfio_realize;
+ hioc->get_cap = hiod_legacy_vfio_get_cap;
};
static const TypeInfo types[] = {
