[PATCH 15/20] nubus: move NubusBus from mac-nubus-bridge to nubus-bridge

[Mark Cave-Ayland]

Now that Nubus has its own address space rather than mapping directly into the
system bus, move the Nubus reference from MacNubusBridge to NubusBridge.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/m68k/q800.c                      | 2 +-
 hw/nubus/mac-nubus-bridge.c         | 9 ++++-----
 hw/nubus/nubus-bridge.c             | 9 +++++++++
 include/hw/nubus/mac-nubus-bridge.h | 1 -
 include/hw/nubus/nubus.h            | 2 ++
 5 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
index 0a0051a296..46befe0898 100644
--- a/hw/m68k/q800.c
+++ b/hw/m68k/q800.c
@@ -397,7 +397,7 @@ static void q800_init(MachineState *machine)
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, NUBUS_SLOT_BASE +
                                             9 * NUBUS_SLOT_SIZE);
 
-    nubus = MAC_NUBUS_BRIDGE(dev)->bus;
+    nubus = NUBUS_BRIDGE(dev)->bus;
 
     /* framebuffer in nubus slot #9 */
 
diff --git a/hw/nubus/mac-nubus-bridge.c b/hw/nubus/mac-nubus-bridge.c
index def1d2d313..c16cfc4ab3 100644
--- a/hw/nubus/mac-nubus-bridge.c
+++ b/hw/nubus/mac-nubus-bridge.c
@@ -16,21 +16,20 @@
 static void mac_nubus_bridge_init(Object *obj)
 {
     MacNubusBridge *s = MAC_NUBUS_BRIDGE(obj);
+    NubusBridge *nb = NUBUS_BRIDGE(obj);
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 
-    s->bus = NUBUS_BUS(qbus_create(TYPE_NUBUS_BUS, DEVICE(s), NULL));
-
     /* Macintosh only has slots 0x9 to 0xe available */
-    s->bus->slot_available_mask = 0x7e00;
+    nb->bus->slot_available_mask = 0x7e00;
 
     /* Aliases for slots 0x9 to 0xe */
     memory_region_init_alias(&s->super_slot_alias, obj, "super-slot-alias",
-                             &s->bus->nubus_mr,
+                             &nb->bus->nubus_mr,
                              9 * NUBUS_SUPER_SLOT_SIZE,
                              6 * NUBUS_SUPER_SLOT_SIZE);
 
     memory_region_init_alias(&s->slot_alias, obj, "slot-alias",
-                             &s->bus->nubus_mr,
+                             &nb->bus->nubus_mr,
                              NUBUS_SLOT_BASE + 9 * NUBUS_SLOT_SIZE,
                              6 * NUBUS_SLOT_SIZE);
 
diff --git a/hw/nubus/nubus-bridge.c b/hw/nubus/nubus-bridge.c
index 95662568c5..3b68d4435c 100644
--- a/hw/nubus/nubus-bridge.c
+++ b/hw/nubus/nubus-bridge.c
@@ -12,6 +12,14 @@
 #include "hw/sysbus.h"
 #include "hw/nubus/nubus.h"
 
+
+static void nubus_bridge_init(Object *obj)
+{
+    NubusBridge *s = NUBUS_BRIDGE(obj);
+
+    s->bus = NUBUS_BUS(qbus_create(TYPE_NUBUS_BUS, DEVICE(s), NULL));
+}
+
 static void nubus_bridge_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -22,6 +30,7 @@ static void nubus_bridge_class_init(ObjectClass *klass, void 
*data)
 static const TypeInfo nubus_bridge_info = {
     .name          = TYPE_NUBUS_BRIDGE,
     .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_init = nubus_bridge_init,
     .instance_size = sizeof(NubusBridge),
     .class_init    = nubus_bridge_class_init,
 };
diff --git a/include/hw/nubus/mac-nubus-bridge.h 
b/include/hw/nubus/mac-nubus-bridge.h
index d9bb11db31..45ec610d52 100644
--- a/include/hw/nubus/mac-nubus-bridge.h
+++ b/include/hw/nubus/mac-nubus-bridge.h
@@ -18,7 +18,6 @@ OBJECT_DECLARE_SIMPLE_TYPE(MacNubusBridge, MAC_NUBUS_BRIDGE)
 struct MacNubusBridge {
     NubusBridge parent_obj;
 
-    NubusBus *bus;
     MemoryRegion super_slot_alias;
     MemoryRegion slot_alias;
 };
diff --git a/include/hw/nubus/nubus.h b/include/hw/nubus/nubus.h
index e4381b3e18..b62c7e1077 100644
--- a/include/hw/nubus/nubus.h
+++ b/include/hw/nubus/nubus.h
@@ -60,6 +60,8 @@ struct NubusDevice {
 
 struct NubusBridge {
     SysBusDevice parent_obj;
+
+    NubusBus *bus;
 };
 
 #endif
-- 
2.20.1