diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2008-12-28 14:25:58 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2008-12-28 14:25:58 +0000 |
| commit | 15bcab8f8003869faf111d93216766fa46a439e5 (patch) | |
| tree | dd5495d479126ba42e8d8519a00759320c8d9194 /sys/arch | |
| parent | 31cc9a359065410e8d2b2f8fc1ba0324d6293ac9 (diff) | |
Make blitter ``go the other way'' when scrolling down.
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/sparc64/dev/ifb.c | 15 |
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)); |