[src/trunk]: src/sys/external/bsd keep dsb in vchiq code.

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

details:   https://anonhg.NetBSD.org/src/rev/c97bc16e67ac
branches:  trunk
changeset: 826537:c97bc16e67ac
user:      maya <maya%NetBSD.org@localhost>
date:      Mon Sep 11 07:33:45 2017 +0000

description:
keep dsb in vchiq code.

dsb refers to an arm instruction, so it won't be used on MI code.

diffstat:

 sys/external/bsd/common/include/asm/barrier.h           |  3 +--
 sys/external/bsd/vchiq/dist/interface/compat/vchi_bsd.h |  2 ++
 2 files changed, 3 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r d21f1c838c3c -r c97bc16e67ac sys/external/bsd/common/include/asm/barrier.h
--- a/sys/external/bsd/common/include/asm/barrier.h     Mon Sep 11 06:02:09 2017 +0000
+++ b/sys/external/bsd/common/include/asm/barrier.h     Mon Sep 11 07:33:45 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: barrier.h,v 1.2 2017/09/11 05:22:10 maya Exp $ */
+/*     $NetBSD: barrier.h,v 1.3 2017/09/11 07:33:45 maya Exp $ */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -41,7 +41,6 @@
 #define        mb      membar_sync
 #define        wmb     membar_producer
 #define        rmb     membar_consumer
-#define        dsb     membar_producer
 
 #ifdef __alpha__               /* XXX As if...  */
 #  define      read_barrier_depends    membar_sync
diff -r d21f1c838c3c -r c97bc16e67ac sys/external/bsd/vchiq/dist/interface/compat/vchi_bsd.h
--- a/sys/external/bsd/vchiq/dist/interface/compat/vchi_bsd.h   Mon Sep 11 06:02:09 2017 +0000
+++ b/sys/external/bsd/vchiq/dist/interface/compat/vchi_bsd.h   Mon Sep 11 07:33:45 2017 +0000
@@ -328,6 +328,8 @@
 #define BCM2835_MBOX_CHAN_VCHIQ        3
 #define bcm_mbox_write bcmmbox_write
 
+#define dsb    membar_producer
+
 #define device_print_prettyname(dev)   device_printf((dev), "")
 
 #endif /* __VCHI_NETBSD_H__ */