diff --git a/sys/arch/next68k/include/bus_space.h b/sys/arch/next68k/include/bus_space.h
index 6f6471bae81e..c23239f4e83e 100644
--- a/sys/arch/next68k/include/bus_space.h
+++ b/sys/arch/next68k/include/bus_space.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: bus_space.h,v 1.7 2001/05/12 22:35:29 chs Exp $	*/
+/*	$NetBSD: bus_space.h,v 1.8 2002/06/11 05:17:30 deberg Exp $	*/
 
 /*-
  * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
@@ -116,6 +116,16 @@ typedef u_long	bus_space_handle_t;
 
 #define	bus_space_free(t, h, s)
 
+/*
+ *	paddr_t bus_space_mmap __P((bus_space_tag_t t, bus_addr_t base,
+ *	    off_t offset, int prot, int flags));
+ *
+ * Mmap an area of bus space.
+ */
+
+#define bus_space_mmap(t, addr, off, prot, flags) 			\
+	m68k_btop((addr) + (off))
+
 /*
  *	u_intN_t bus_space_read_N __P((bus_space_tag_t tag,
  *	    bus_space_handle_t bsh, bus_size_t offset));