[src/trunk]: src/sys/arch/arm/broadcom support BUS_SPACE_MAP_PREFETCHABLE in ...

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

details:   https://anonhg.NetBSD.org/src/rev/b38c11bb9928
branches:  trunk
changeset: 784266:b38c11bb9928
user:      macallan <macallan%NetBSD.org@localhost>
date:      Wed Jan 23 16:51:14 2013 +0000

description:
support BUS_SPACE_MAP_PREFETCHABLE in bcm2835_bs_mmap()

diffstat:

 sys/arch/arm/broadcom/bcm2835_space.c |  10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diffs (32 lines):

diff -r 551deeb7df94 -r b38c11bb9928 sys/arch/arm/broadcom/bcm2835_space.c
--- a/sys/arch/arm/broadcom/bcm2835_space.c     Wed Jan 23 16:39:03 2013 +0000
+++ b/sys/arch/arm/broadcom/bcm2835_space.c     Wed Jan 23 16:51:14 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bcm2835_space.c,v 1.3 2013/01/13 06:10:25 skrll Exp $  */
+/*     $NetBSD: bcm2835_space.c,v 1.4 2013/01/23 16:51:14 macallan Exp $       */
 
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bcm2835_space.c,v 1.3 2013/01/13 06:10:25 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bcm2835_space.c,v 1.4 2013/01/23 16:51:14 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -370,8 +370,12 @@
 paddr_t
 bcm2835_bs_mmap(void *t, bus_addr_t paddr, off_t offset, int prot, int flags)
 {
+       paddr_t bus_flags = 0;
 
-       return (arm_btop((paddr + offset)));
+       if (flags & BUS_SPACE_MAP_PREFETCHABLE)
+               bus_flags |= ARM32_MMAP_WRITECOMBINE;
+
+       return (arm_btop(paddr + offset) | bus_flags);
 }
 
 int