[src/trunk]: src/sys/arch/hpcmips/dev - fb_mmap(): treate about unaligned fra...

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

details:   https://anonhg.NetBSD.org/src/rev/d5e1f05c2157
branches:  trunk
changeset: 481364:d5e1f05c2157
user:      sato <sato%NetBSD.org@localhost>
date:      Thu Jan 27 06:18:03 2000 +0000

description:
- fb_mmap(): treate about unaligned framebuffer memory (MC-R510).

diffstat:

 sys/arch/hpcmips/dev/fb.c |  12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diffs (36 lines):

diff -r 89264a0d0402 -r d5e1f05c2157 sys/arch/hpcmips/dev/fb.c
--- a/sys/arch/hpcmips/dev/fb.c Thu Jan 27 05:39:50 2000 +0000
+++ b/sys/arch/hpcmips/dev/fb.c Thu Jan 27 06:18:03 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: fb.c,v 1.13 2000/01/16 21:39:36 uch Exp $      */
+/*     $NetBSD: fb.c,v 1.14 2000/01/27 06:18:03 sato Exp $     */
 
 /*-
  * Copyright (c) 1999
@@ -67,7 +67,7 @@
 static const char _copyright[] __attribute__ ((unused)) =
     "Copyright (c) 1999 Shin Takemura.  All rights reserved.";
 static const char _rcsid[] __attribute__ ((unused)) =
-    "$Id: fb.c,v 1.13 2000/01/16 21:39:36 uch Exp $";
+    "$Id: fb.c,v 1.14 2000/01/27 06:18:03 sato Exp $";
 
 
 #include <sys/param.h>
@@ -482,11 +482,15 @@
 
        struct fb_softc *sc = v;
        struct fb_devconfig *dc = sc->sc_dc;
+       vaddr_t fbalign;
+       off_t fboff;
 
-       if (offset >= (dc->dc_rowbytes * dc->dc_height) || offset < 0)
+       fbalign = mips_ptob(mips_btop(dc->dc_fbaddr));
+       fboff = dc->dc_fbaddr - fbalign;
+       if (offset >= (dc->dc_rowbytes * dc->dc_height + fboff) || offset < 0)
                return -1;
 
-       return mips_btop(dc->dc_fbaddr + offset);
+       return mips_btop(fbalign + offset);
 }
 
 int