set_window
long (*set_window)(struct iommu_table_group *table_group,
.set_window = pnv_pci_ioda2_set_window,
.set_window = spapr_tce_set_window,
ret = table_group->ops->set_window(table_group, i, tbl);
if (!table_group->ops->set_window || !table_group->ops->unset_window ||
ret = table_group->ops->set_window(table_group, num, tbl);
set_window(plane, &iodata.window);