[v2,07/27] vfio/container: switch to IOMMU BE add/del_section_window

diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 33f475957c..b83ae4b3b6 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -199,12 +199,6 @@  int vfio_set_dirty_page_tracking(VFIOLegacyContainer *container, bool start);
 int vfio_query_dirty_bitmap(VFIOLegacyContainer *container, VFIOBitmap *vbmap,
                             hwaddr iova, hwaddr size);
 
-int vfio_container_add_section_window(VFIOLegacyContainer *container,
-                                      MemoryRegionSection *section,
-                                      Error **errp);
-void vfio_container_del_section_window(VFIOLegacyContainer *container,
-                                       MemoryRegionSection *section);
-
 void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
 void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
 void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
index 9504564f4e..1f6d5fd229 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -69,6 +69,11 @@  int vfio_container_dma_map(VFIOContainer *bcontainer,
 int vfio_container_dma_unmap(VFIOContainer *bcontainer,
                              hwaddr iova, ram_addr_t size,
                              IOMMUTLBEntry *iotlb);
+int vfio_container_add_section_window(VFIOContainer *bcontainer,
+                                      MemoryRegionSection *section,
+                                      Error **errp);
+void vfio_container_del_section_window(VFIOContainer *bcontainer,
+                                       MemoryRegionSection *section);
 
 void vfio_container_init(VFIOContainer *bcontainer,
                          VFIOAddressSpace *space,
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index c92af34eed..49cb5b6958 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -655,7 +655,7 @@  static void vfio_listener_region_add(MemoryListener *listener,
         return;
     }
 
-    if (vfio_container_add_section_window(container, section, &err)) {
+    if (vfio_container_add_section_window(bcontainer, section, &err)) {
         goto fail;
     }
 
@@ -879,7 +879,7 @@  static void vfio_listener_region_del(MemoryListener *listener,
 
     memory_region_unref(section->mr);
 
-    vfio_container_del_section_window(container, section);
+    vfio_container_del_section_window(&container->bcontainer, section);
 }
 
 typedef struct VFIODirtyRanges {
diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c
index e1056dd78e..f2a9a33465 100644
--- a/hw/vfio/container-base.c
+++ b/hw/vfio/container-base.c
@@ -48,6 +48,27 @@  int vfio_container_dma_unmap(VFIOContainer *bcontainer,
     return bcontainer->ops->dma_unmap(bcontainer, iova, size, iotlb);
 }
 
+int vfio_container_add_section_window(VFIOContainer *bcontainer,
+                                      MemoryRegionSection *section,
+                                      Error **errp)
+{
+    if (!bcontainer->ops->add_window) {
+        return 0;
+    }
+
+    return bcontainer->ops->add_window(bcontainer, section, errp);
+}
+
+void vfio_container_del_section_window(VFIOContainer *bcontainer,
+                                       MemoryRegionSection *section)
+{
+    if (!bcontainer->ops->del_window) {
+        return;
+    }
+
+    return bcontainer->ops->del_window(bcontainer, section);
+}
+
 void vfio_container_init(VFIOContainer *bcontainer,
                          VFIOAddressSpace *space,
                          struct VFIOIOMMUBackendOpsClass *ops)
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index fd2d602fb9..7ca61a7d36 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -215,10 +215,13 @@  static int vfio_legacy_dma_map(VFIOContainer *bcontainer, hwaddr iova,
     return -errno;
 }
 
-int vfio_container_add_section_window(VFIOLegacyContainer *container,
-                                      MemoryRegionSection *section,
-                                      Error **errp)
+static int vfio_legacy_add_section_window(VFIOContainer *bcontainer,
+                                          MemoryRegionSection *section,
+                                          Error **errp)
 {
+    VFIOLegacyContainer *container = container_of(bcontainer,
+                                                  VFIOLegacyContainer,
+                                                  bcontainer);
     VFIOHostDMAWindow *hostwin;
     hwaddr pgsize = 0;
     int ret;
@@ -283,9 +286,13 @@  int vfio_container_add_section_window(VFIOLegacyContainer *container,
     return 0;
 }
 
-void vfio_container_del_section_window(VFIOLegacyContainer *container,
-                                       MemoryRegionSection *section)
+static void vfio_legacy_del_section_window(VFIOContainer *bcontainer,
+                                           MemoryRegionSection *section)
 {
+    VFIOLegacyContainer *container = container_of(bcontainer,
+                                                  VFIOLegacyContainer,
+                                                  bcontainer);
+
     if (container->iommu_type != VFIO_SPAPR_TCE_v2_IOMMU) {
         return;
     }
@@ -1174,6 +1181,8 @@  static void vfio_iommu_backend_legacy_ops_class_init(ObjectClass *oc,
 
     ops->dma_map = vfio_legacy_dma_map;
     ops->dma_unmap = vfio_legacy_dma_unmap;
+    ops->add_window = vfio_legacy_add_section_window;
+    ops->del_window = vfio_legacy_del_section_window;
 }
 
 static const TypeInfo vfio_iommu_backend_legacy_ops_type = {