[src/trunk]: src/sys/arch/shark/ofw use ARM32_MMAP_WRITECOMBINE when mmap()in...

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

details:   https://anonhg.NetBSD.org/src/rev/5ba26ca3a8de
branches:  trunk
changeset: 762779:5ba26ca3a8de
user:      macallan <macallan%NetBSD.org@localhost>
date:      Mon Feb 28 10:05:04 2011 +0000

description:
use ARM32_MMAP_WRITECOMBINE when mmap()ing video memory for improved X11 speed

diffstat:

 sys/arch/shark/ofw/igsfb_ofbus.c |  10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diffs (42 lines):

diff -r 80b0b028a770 -r 5ba26ca3a8de sys/arch/shark/ofw/igsfb_ofbus.c
--- a/sys/arch/shark/ofw/igsfb_ofbus.c  Mon Feb 28 10:03:49 2011 +0000
+++ b/sys/arch/shark/ofw/igsfb_ofbus.c  Mon Feb 28 10:05:04 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: igsfb_ofbus.c,v 1.10 2009/11/11 17:05:11 macallan Exp $ */
+/*     $NetBSD: igsfb_ofbus.c,v 1.11 2011/02/28 10:05:04 macallan Exp $ */
 
 /*
  * Copyright (c) 2006 Michael Lorenz
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: igsfb_ofbus.c,v 1.10 2009/11/11 17:05:11 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: igsfb_ofbus.c,v 1.11 2011/02/28 10:05:04 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -39,10 +39,12 @@
 #include <sys/device.h>
 #include <sys/malloc.h>
 #include <sys/buf.h>
+#include <uvm/uvm.h>
 
 #include <machine/bus.h>
 #include <machine/intr.h>
 #include <machine/ofw.h>
+#include <machine/pmap.h>
 
 #include <dev/isa/isavar.h>
 
@@ -255,6 +257,10 @@
         * registers on CyberPro at its physical address
         */
        if ((offset >= igsfb_mem_paddr) && 
+           (offset < (igsfb_mem_paddr + 0x00800000))) {
+               return (arm_btop(offset) | ARM32_MMAP_WRITECOMBINE);
+       }
+       if ((offset >= (igsfb_mem_paddr + 0x00800000)) && 
            (offset < (igsfb_mem_paddr + 0x01000000)))
                return arm_btop(offset);