[src/trunk]: src/sys/arch/amiga/include Add dummy bus_space_barrier method, l...

[is <is%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f1b1b8bca47d
branches:  trunk
changeset: 472066:f1b1b8bca47d
user:      is <is%NetBSD.org@localhost>
date:      Tue Apr 20 05:48:37 1999 +0000

description:
Add dummy bus_space_barrier method, like mac68k

diffstat:

 sys/arch/amiga/include/bus.h |  17 ++++++++++++++++-
 1 files changed, 16 insertions(+), 1 deletions(-)

diffs (30 lines):

diff -r 4842ff54b7b2 -r f1b1b8bca47d sys/arch/amiga/include/bus.h
--- a/sys/arch/amiga/include/bus.h      Tue Apr 20 05:44:42 1999 +0000
+++ b/sys/arch/amiga/include/bus.h      Tue Apr 20 05:48:37 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bus.h,v 1.10 1999/03/23 21:29:04 drochner Exp $        */
+/*     $NetBSD: bus.h,v 1.11 1999/04/20 05:48:37 is Exp $      */
 
 /*
  * Copyright (c) 1996 Leo Weppelman.  All rights reserved.
@@ -270,5 +270,20 @@
 #define bus_space_copy_region_2(t, srch, srco, dsth, dsto, c) \
        ((t)->absm->bscr2)((t), (srch), (srco), (dsth), (dsto), (c))
 
+/* 
+ * Bus read/write barrier methods.
+ * 
+ *      void bus_space_barrier __P((bus_space_tag_t tag,
+ *          bus_space_handle_t bsh, bus_size_t offset,
+ *          bus_size_t len, int flags));
+ *    
+ * Note: the 680x0 does not currently require barriers, but we must
+ * provide the flags to MI code.
+ */   
+#define bus_space_barrier(t, h, o, l, f)        \
+        ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
+#define BUS_SPACE_BARRIER_READ  0x01            /* force read barrier */
+#define BUS_SPACE_BARRIER_WRITE 0x02            /* force write barrier */
+ 
 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
 #endif /* _AMIGA_BUS_H_ */