mac_dbdma: remove DBDMA_init() function

Instead we can now instantiate the MAC_DBDMA object directly within the
macio device. We also add the DBDMA device as a child property so that
it is possible to retrieve later.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

hw/misc/macio/mac_dbdma.c

@@ -886,20 +886,6 @@ static void dbdma_unassigned_flush(DBDMA_io *io)
                   __func__, ch->channel);
 }
 
-void* DBDMA_init (MemoryRegion **dbdma_mem)
-{
-    DBDMAState *s;
-    SysBusDevice *sbd;
-
-    s = MAC_DBDMA(object_new(TYPE_MAC_DBDMA));
-    object_property_set_bool(OBJECT(s), true, "realized", NULL);
-
-    sbd = SYS_BUS_DEVICE(s);
-    *dbdma_mem = sysbus_mmio_get_region(sbd, 0);
-
-    return s;
-}
-
 static void mac_dbdma_init(Object *obj)
 {
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);

hw/misc/macio/macio.c

@@ -41,7 +41,7 @@ typedef struct MacIOState
 
     MemoryRegion bar;
     CUDAState cuda;
-    void *dbdma;
+    DBDMAState *dbdma;
     MemoryRegion *pic_mem;
     MemoryRegion *escc_mem;
     uint64_t frequency;
@@ -127,10 +127,15 @@ static void macio_common_realize(PCIDevice *d, Error **errp)
     MacIOState *s = MACIO(d);
     SysBusDevice *sysbus_dev;
     Error *err = NULL;
-    MemoryRegion *dbdma_mem;
 
-    s->dbdma = DBDMA_init(&dbdma_mem);
-    memory_region_add_subregion(&s->bar, 0x08000, dbdma_mem);
+    object_property_set_bool(OBJECT(s->dbdma), true, "realized", &err);
+    if (err) {
+        error_propagate(errp, err);
+        return;
+    }
+    sysbus_dev = SYS_BUS_DEVICE(s->dbdma);
+    memory_region_add_subregion(&s->bar, 0x08000,
+                                sysbus_mmio_get_region(sysbus_dev, 0));
 
     object_property_set_bool(OBJECT(&s->cuda), true, "realized", &err);
     if (err) {
@@ -334,6 +339,9 @@ static void macio_instance_init(Object *obj)
     object_initialize(&s->cuda, sizeof(s->cuda), TYPE_CUDA);
     qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default());
     object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL);
+
+    s->dbdma = MAC_DBDMA(object_new(TYPE_MAC_DBDMA));
+    object_property_add_child(obj, "dbdma", OBJECT(s->dbdma), NULL);
 }
 
 static const VMStateDescription vmstate_macio_oldworld = {

include/hw/ppc/mac_dbdma.h

@@ -174,7 +174,6 @@ void DBDMA_register_channel(void *dbdma, int nchan, qemu_irq irq,
                             DBDMA_rw rw, DBDMA_flush flush,
                             void *opaque);
 void DBDMA_kick(DBDMAState *dbdma);
-void* DBDMA_init (MemoryRegion **dbdma_mem);
 
 #define TYPE_MAC_DBDMA "mac-dbdma"
 #define MAC_DBDMA(obj) OBJECT_CHECK(DBDMAState, (obj), TYPE_MAC_DBDMA)