Merge remote-tracking branch 'afaerber-or/qom-next-2' into staging

* afaerber-or/qom-next-2: (22 commits)
  qom: Push error reporting to object_property_find()
  qdev: Remove qdev_prop_exists()
  qbus: Initialize in standard way
  qbus: Make child devices links
  qdev: Connect busses with their parent devices
  qdev: Convert busses to QEMU Object Model
  qdev: Move SysBus initialization to sysbus.c
  qdev: Use wrapper for qdev_get_path
  qdev: Remove qdev_prop_set_defaults
  qdev: Clean up global properties
  qdev: Move bus properties to abstract superclasses
  qdev: Move bus properties to a separate global
  qdev: Push "type" property up to Object
  arm_l2x0: Rename "type" property to "cache-type"
  m48t59: Rename "type" property to "model"
  qom: Assert that public types have a non-NULL parent field
  qom: Drop type_register_static_alias() macro
  qom: Make Object a type
  qom: Add class_base_init
  qom: Add object_child_foreach()
  ...

1 files changed, 39 insertions, 6 deletions

diff --git a/hw/sysbus.c b/hw/sysbus.c
index db4efccef4..9d8b1eaf7d 100644
--- a/hw/sysbus.c
+++ b/hw/sysbus.c
@@ -24,11 +24,19 @@
 static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent);
 static char *sysbus_get_fw_dev_path(DeviceState *dev);
 
-struct BusInfo system_bus_info = {
-    .name       = "System",
-    .size       = sizeof(BusState),
-    .print_dev  = sysbus_dev_print,
-    .get_fw_dev_path = sysbus_get_fw_dev_path,
+static void system_bus_class_init(ObjectClass *klass, void *data)
+{
+    BusClass *k = BUS_CLASS(klass);
+
+    k->print_dev = sysbus_dev_print;
+    k->get_fw_dev_path = sysbus_get_fw_dev_path;
+}
+
+static const TypeInfo system_bus_info = {
+    .name = TYPE_SYSTEM_BUS,
+    .parent = TYPE_BUS,
+    .instance_size = sizeof(BusState),
+    .class_init = system_bus_class_init,
 };
 
 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq)
@@ -244,7 +252,7 @@ static void sysbus_device_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *k = DEVICE_CLASS(klass);
     k->init = sysbus_device_init;
-    k->bus_info = &system_bus_info;
+    k->bus_type = TYPE_SYSTEM_BUS;
 }
 
 static TypeInfo sysbus_device_type_info = {
@@ -256,8 +264,33 @@ static TypeInfo sysbus_device_type_info = {
     .class_init = sysbus_device_class_init,
 };
 
+/* This is a nasty hack to allow passing a NULL bus to qdev_create.  */
+static BusState *main_system_bus;
+
+static void main_system_bus_create(void)
+{
+    /* assign main_system_bus before qbus_create_inplace()
+     * in order to make "if (bus != sysbus_get_default())" work */
+    main_system_bus = g_malloc0(system_bus_info.instance_size);
+    qbus_create_inplace(main_system_bus, TYPE_SYSTEM_BUS, NULL,
+                        "main-system-bus");
+    main_system_bus->glib_allocated = true;
+    object_property_add_child(container_get(qdev_get_machine(),
+                                            "/unattached"),
+                              "sysbus", OBJECT(main_system_bus), NULL);
+}
+
+BusState *sysbus_get_default(void)
+{
+    if (!main_system_bus) {
+        main_system_bus_create();
+    }
+    return main_system_bus;
+}
+
 static void sysbus_register_types(void)
 {
+    type_register_static(&system_bus_info);
     type_register_static(&sysbus_device_type_info);
 }