[Qemu-devel] [RFC PATCH 13/14] spapr_pci: Remove finish_realize hook

[David Gibson]

Now that spapr-pci-vfio-host-bridge is reduced to just a stub, there is
only one implementation of the finish_realize hook in sPAPRPHBClass.  So,
we can fold that implementation into its (single) caller, and remove the
hook.  That's the last thing left in sPAPRPHBClass, so that can go away as
well.

Signed-off-by: David Gibson <address@hidden>
---
 hw/ppc/spapr_pci.c          | 29 +++++++----------------------
 include/hw/pci-host/spapr.h | 12 ------------
 2 files changed, 7 insertions(+), 34 deletions(-)

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 77223b9..39c51d8 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -1403,11 +1403,12 @@ static void spapr_phb_realize(DeviceState *dev, Error 
**errp)
     SysBusDevice *s = SYS_BUS_DEVICE(dev);
     sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
     PCIHostState *phb = PCI_HOST_BRIDGE(s);
-    sPAPRPHBClass *info = SPAPR_PCI_HOST_BRIDGE_GET_CLASS(s);
     char *namebuf;
     int i;
     PCIBus *bus;
     uint64_t msi_window_size = 4096;
+    sPAPRTCETable *tcet;
+    uint32_t nb_table;
 
     if (sphb->index != (uint32_t)-1) {
         hwaddr windows_base;
@@ -1557,35 +1558,22 @@ static void spapr_phb_realize(DeviceState *dev, Error 
**errp)
         }
     }
 
-    if (!info->finish_realize) {
-        error_setg(errp, "finish_realize not defined");
-        return;
-    }
-
-    info->finish_realize(sphb, errp);
-
-    sphb->msi = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, g_free);
-
-    QLIST_INIT(&sphb->pe_list);
-}
-
-static void spapr_phb_finish_realize(sPAPRPHBState *sphb, Error **errp)
-{
-    sPAPRTCETable *tcet;
-    uint32_t nb_table;
-
     nb_table = sphb->dma_win_size >> SPAPR_TCE_PAGE_SHIFT;
     tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn,
                                0, SPAPR_TCE_PAGE_SHIFT, nb_table, false);
     if (!tcet) {
         error_setg(errp, "Unable to create TCE table for %s",
                    sphb->dtbusname);
-        return ;
+        return;
     }
 
     /* Register default 32bit DMA window */
     memory_region_add_subregion(&sphb->iommu_root, sphb->dma_win_addr,
                                 spapr_tce_get_iommu(tcet));
+
+    sphb->msi = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, g_free);
+
+    QLIST_INIT(&sphb->pe_list);
 }
 
 static int spapr_phb_children_reset(Object *child, void *opaque)
@@ -1742,7 +1730,6 @@ static void spapr_phb_class_init(ObjectClass *klass, void 
*data)
 {
     PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);
-    sPAPRPHBClass *spc = SPAPR_PCI_HOST_BRIDGE_CLASS(klass);
     HotplugHandlerClass *hp = HOTPLUG_HANDLER_CLASS(klass);
 
     hc->root_bus_path = spapr_phb_root_bus_path;
@@ -1752,7 +1739,6 @@ static void spapr_phb_class_init(ObjectClass *klass, void 
*data)
     dc->vmsd = &vmstate_spapr_pci;
     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
     dc->cannot_instantiate_with_device_add_yet = false;
-    spc->finish_realize = spapr_phb_finish_realize;
     hp->plug = spapr_phb_hot_plug_child;
     hp->unplug = spapr_phb_hot_unplug_child;
 }
@@ -1762,7 +1748,6 @@ static const TypeInfo spapr_phb_info = {
     .parent        = TYPE_PCI_HOST_BRIDGE,
     .instance_size = sizeof(sPAPRPHBState),
     .class_init    = spapr_phb_class_init,
-    .class_size    = sizeof(sPAPRPHBClass),
     .interfaces    = (InterfaceInfo[]) {
         { TYPE_HOTPLUG_HANDLER },
         { }
diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
index fd85a21..2970ad0 100644
--- a/include/hw/pci-host/spapr.h
+++ b/include/hw/pci-host/spapr.h
@@ -33,20 +33,8 @@
 #define SPAPR_PCI_HOST_BRIDGE(obj) \
     OBJECT_CHECK(sPAPRPHBState, (obj), TYPE_SPAPR_PCI_HOST_BRIDGE)
 
-#define SPAPR_PCI_HOST_BRIDGE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(sPAPRPHBClass, (klass), TYPE_SPAPR_PCI_HOST_BRIDGE)
-#define SPAPR_PCI_HOST_BRIDGE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(sPAPRPHBClass, (obj), TYPE_SPAPR_PCI_HOST_BRIDGE)
-
-typedef struct sPAPRPHBClass sPAPRPHBClass;
 typedef struct sPAPRPHBState sPAPRPHBState;
 
-struct sPAPRPHBClass {
-    PCIHostBridgeClass parent_class;
-
-    void (*finish_realize)(sPAPRPHBState *sphb, Error **errp);
-};
-
 typedef struct spapr_pci_msi {
     uint32_t first_irq;
     uint32_t num;
-- 
2.4.3