[src/trunk]: src/sys/arch/sparc64/sparc64 Don't change protection on the cloc...

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

details:   https://anonhg.NetBSD.org/src/rev/c33f49950b66
branches:  trunk
changeset: 473629:c33f49950b66
user:      eeh <eeh%NetBSD.org@localhost>
date:      Thu Jun 10 04:31:20 1999 +0000

description:
Don't change protection on the clock for the moment.

diffstat:

 sys/arch/sparc64/sparc64/clock.c |  11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diffs (48 lines):

diff -r 0bf361c55757 -r c33f49950b66 sys/arch/sparc64/sparc64/clock.c
--- a/sys/arch/sparc64/sparc64/clock.c  Thu Jun 10 03:25:18 1999 +0000
+++ b/sys/arch/sparc64/sparc64/clock.c  Thu Jun 10 04:31:20 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: clock.c,v 1.12 1999/06/07 05:28:04 eeh Exp $ */
+/*     $NetBSD: clock.c,v 1.13 1999/06/10 04:31:20 eeh Exp $ */
 
 /*
  * Copyright (c) 1992, 1993
@@ -203,8 +203,10 @@
        struct clockreg *cl;
        paddr_t pa;
 
+#if 0
        pa = pmap_extract(pmap_kernel(), (vaddr_t)bh);
        pmap_enter(pmap_kernel(), (vaddr_t)bh, pa, VM_PROT_READ, 1, VM_PROT_READ);
+#endif
        cl = (struct clockreg *)((long)bh + CLK_MK48T08_OFF);
 
        return (cl);
@@ -226,6 +228,11 @@
  * This is *UGLY*!  We probably have multiple mappings.  But I do
  * know that this all fits inside an 8K page, so I'll just map in
  * once.
+ *
+ * What we really need is some way to record the bus attach args
+ * so we can call *_bus_map() later with BUS_SPACE_MAP_READONLY
+ * or not to write enable/disable the device registers.  This is
+ * a non-trivial operation.  
  */
 /* ARGSUSED */
 static void
@@ -416,6 +423,7 @@
        else
                prot = --writers == 0 ? VM_PROT_READ : 0;
        splx(s);
+#if 0
        if (prot) {
                vaddr_t va = (vaddr_t)clockreg & ~(NBPG-1);
                paddr_t pa;
@@ -423,6 +431,7 @@
                pa = pmap_extract(pmap_kernel(), va);
                pmap_enter(pmap_kernel(), va, pa, prot, 1, prot);
        }
+#endif
 }
 
 void