diff --git a/sys/dev/ebus/ebusreg.h b/sys/dev/ebus/ebusreg.h
index 795e4ffdf2f7..264d91013f74 100644
--- a/sys/dev/ebus/ebusreg.h
+++ b/sys/dev/ebus/ebusreg.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: ebusreg.h,v 1.8 2008/05/29 14:51:27 mrg Exp $	*/
+/*	$NetBSD: ebusreg.h,v 1.9 2011/03/16 02:34:10 mrg Exp $	*/
 
 /*
  * Copyright (c) 1999 Matthew R. Green
@@ -88,6 +88,14 @@ struct ebus_ranges {
 	uint32_t	size;
 };
 
+struct ebus_mainbus_ranges {
+	u_int32_t	child_hi;
+	u_int32_t	child_lo;
+	u_int32_t	phys_hi;
+	u_int32_t	phys_lo;
+	u_int32_t	size;
+};
+
 
 /* NB: ms-IIep PROMs lack these interrupt-related properties */
 struct ebus_interrupt_map {