[src/trunk]: src/sys/arch/atari/atari When mapping non-cacheable memory with ...

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

details:   https://anonhg.NetBSD.org/src/rev/5131a6725939
branches:  trunk
changeset: 494016:5131a6725939
user:      leo <leo%NetBSD.org@localhost>
date:      Thu Jun 29 07:40:04 2000 +0000

description:
When mapping non-cacheable memory with bus_space_map, make sure we use the
precise (serialized) way.

diffstat:

 sys/arch/atari/atari/bus.c |  15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diffs (33 lines):

diff -r 4159a6be1a17 -r 5131a6725939 sys/arch/atari/atari/bus.c
--- a/sys/arch/atari/atari/bus.c        Thu Jun 29 07:37:53 2000 +0000
+++ b/sys/arch/atari/atari/bus.c        Thu Jun 29 07:40:04 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bus.c,v 1.21 2000/06/26 14:20:39 mrg Exp $     */
+/*     $NetBSD: bus.c,v 1.22 2000/06/29 07:40:04 leo Exp $     */
 
 /*-
  * Copyright (c) 1998 The NetBSD Foundation, Inc.
@@ -269,11 +269,22 @@
        *bshp = (caddr_t)(va + (bpa & PGOFSET));
 
        for(; pa < endpa; pa += NBPG, va += NBPG) {
+               u_int   *ptep, npte;
+
                pmap_enter(pmap_kernel(), (vaddr_t)va, pa,
                                VM_PROT_READ|VM_PROT_WRITE, PMAP_WIRED);
+
+               ptep = kvtopte(va);
+               npte = *ptep & ~PG_CMASK;
+
                if (!(flags & BUS_SPACE_MAP_CACHEABLE))
-                       pmap_changebit(pa, PG_CI, TRUE);
+                       npte |= PG_CI;
+               else if (mmutype == MMU_68040)
+                       npte |= PG_CCB;
+
+               *ptep = npte;
        }
+       TBIAS();
        return (0);
 }