summaryrefslogtreecommitdiff
path: root/sys
diff options
context:
space:
mode:
authorMark Kettenis <kettenis@cvs.openbsd.org>2008-12-28 14:25:58 +0000
committerMark Kettenis <kettenis@cvs.openbsd.org>2008-12-28 14:25:58 +0000
commit15bcab8f8003869faf111d93216766fa46a439e5 (patch)
treedd5495d479126ba42e8d8519a00759320c8d9194 /sys
parent31cc9a359065410e8d2b2f8fc1ba0324d6293ac9 (diff)
Make blitter ``go the other way'' when scrolling down.
Diffstat (limited to 'sys')
-rw-r--r--sys/arch/sparc64/dev/ifb.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/sys/arch/sparc64/dev/ifb.c b/sys/arch/sparc64/dev/ifb.c
index 9e16fd9146e..097c34119bd 100644
--- a/sys/arch/sparc64/dev/ifb.c
+++ b/sys/arch/sparc64/dev/ifb.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ifb.c,v 1.6 2008/12/27 23:16:52 miod Exp $ */
+/* $OpenBSD: ifb.c,v 1.7 2008/12/28 14:25:57 kettenis Exp $ */
/*
* Copyright (c) 2007, 2008 Miodrag Vallat.
@@ -106,6 +106,8 @@
*
*/
#define IFB_REG_MAGIC 0x0000
+#define IFB_REG_MAGIC_DIR_FORWARDS 0x00
+#define IFB_REG_MAGIC_DIR_BACKWARDS 0x0a
/*
* 0040 component configuration
@@ -663,12 +665,19 @@ ifb_copyrows(void *cookie, int src, int dst, int num)
{
struct rasops_info *ri = cookie;
struct ifb_softc *sc = ri->ri_hw;
- int i;
+ int i, dir;
num *= ri->ri_font->fontheight;
src *= ri->ri_font->fontheight;
dst *= ri->ri_font->fontheight;
+ if (src < dst) {
+ src += (num -1);
+ dst += num;
+ dir = IFB_REG_MAGIC_DIR_BACKWARDS;
+ } else
+ dir = IFB_REG_MAGIC_DIR_FORWARDS;
+
/* Lots of magic numbers. */
bus_space_write_4(sc->sc_mem_t, sc->sc_reg_h,
IFB_REG_OFFSET + IFB_REG_MAGIC, 2);
@@ -702,7 +711,7 @@ ifb_copyrows(void *cookie, int src, int dst, int num)
IFB_REG_OFFSET + IFB_REG_MAGIC, 0x2200010d);
bus_space_write_4(sc->sc_mem_t, sc->sc_reg_h,
- IFB_REG_OFFSET + IFB_REG_MAGIC, 0x33f01000);
+ IFB_REG_OFFSET + IFB_REG_MAGIC, 0x33f01000 | dir);
bus_space_write_4(sc->sc_mem_t, sc->sc_reg_h,
IFB_REG_OFFSET + IFB_REG_MAGIC,
IFB_COORDS(ri->ri_xorigin, ri->ri_yorigin + dst));