[src/trunk]: src/sys/arch/arm/arm To quote the BCM2835 datasheet that's publi...

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

details:   https://anonhg.NetBSD.org/src/rev/0935f399c63b
branches:  trunk
changeset: 785552:0935f399c63b
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Mar 19 17:11:13 2013 +0000

description:
To quote the BCM2835 datasheet that's publicly available

        "The BCM2835 system uses an AMBA AXI-compatible interface
        structure. In order to keep the system complexity low and data
        throughput high, the BCM2835 AXI system does not always
        return read data in-order."

Deal with this by defining DSB for _ARM_ARCH_6.

OK matt@

diffstat:

 sys/arch/arm/arm/bus_space_asm_generic.S |  4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diffs (18 lines):

diff -r 3dbedda1926b -r 0935f399c63b sys/arch/arm/arm/bus_space_asm_generic.S
--- a/sys/arch/arm/arm/bus_space_asm_generic.S  Tue Mar 19 16:49:56 2013 +0000
+++ b/sys/arch/arm/arm/bus_space_asm_generic.S  Tue Mar 19 17:11:13 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bus_space_asm_generic.S,v 1.8 2012/09/27 00:23:52 matt Exp $   */
+/*     $NetBSD: bus_space_asm_generic.S,v 1.9 2013/03/19 17:11:13 skrll Exp $  */
 
 /*
  * Copyright (c) 1997 Causality Limited.
@@ -40,6 +40,8 @@
 
 #ifdef _ARM_ARCH_7
 #define        DSB     dsb
+#elif defined(_ARM_ARCH_6)
+#define        DSB     mcr p15, 0, r0, c7, c10, 4
 #else
 #define        DSB
 #endif