diff --git a/dma.h b/dma.h
index 8c1ec8f0d205750b928911e885a72ce17f522600..fe08b726057d0e6b886bd1e569760373ff106522 100644
--- a/dma.h
+++ b/dma.h
@@ -31,6 +31,7 @@ struct QEMUSGList {
 #if defined(TARGET_PHYS_ADDR_BITS)
 typedef target_phys_addr_t dma_addr_t;
 
+#define DMA_ADDR_BITS TARGET_PHYS_ADDR_BITS
 #define DMA_ADDR_FMT TARGET_FMT_plx
 
 struct ScatterGatherEntry {
diff --git a/hw/qdev-dma.h b/hw/qdev-dma.h
new file mode 100644
index 0000000000000000000000000000000000000000..f0ff558414d58e6d9cd4f90145fe0bafaaa2579a
--- /dev/null
+++ b/hw/qdev-dma.h
@@ -0,0 +1,12 @@
+/*
+ * Support for dma_addr_t typed properties
+ *
+ * Copyright (C) 2012 David Gibson, IBM Corporation.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include "qdev-addr.h"
+
+#define DEFINE_PROP_DMAADDR(_n, _s, _f, _d)                               \
+    DEFINE_PROP_TADDR(_n, _s, _f, _d)