[src/trunk]: src/sys/dev/ic Add some delays between 8bit reads of DSTAT and S...

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

details:   https://anonhg.NetBSD.org/src/rev/6dc1b2f7ea82
branches:  trunk
changeset: 545622:6dc1b2f7ea82
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Sat Apr 12 06:42:38 2003 +0000

description:
Add some delays between 8bit reads of DSTAT and SSTAT0 registers
as per the 53c710 manual. Pointed out by fredette in osiop_gsc.c long ago.

diffstat:

 sys/dev/ic/osiop.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (34 lines):

diff -r 1386867ccd5b -r 6dc1b2f7ea82 sys/dev/ic/osiop.c
--- a/sys/dev/ic/osiop.c        Sat Apr 12 06:11:15 2003 +0000
+++ b/sys/dev/ic/osiop.c        Sat Apr 12 06:42:38 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: osiop.c,v 1.12 2003/04/12 06:11:15 tsutsui Exp $       */
+/*     $NetBSD: osiop.c,v 1.13 2003/04/12 06:42:38 tsutsui Exp $       */
 
 /*
  * Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
@@ -76,7 +76,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: osiop.c,v 1.12 2003/04/12 06:11:15 tsutsui Exp $");
+__KERNEL_RCSID(0, "$NetBSD: osiop.c,v 1.13 2003/04/12 06:42:38 tsutsui Exp $");
 
 /* #define OSIOP_DEBUG */
 
@@ -513,6 +513,7 @@
                        i--;
                }
                sstat0 = osiop_read_1(sc, OSIOP_SSTAT0);
+               delay(25);
                dstat = osiop_read_1(sc, OSIOP_DSTAT);
                if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) {
                        if (acb != sc->sc_nexus)
@@ -850,6 +851,7 @@
        stat = osiop_read_1(sc, OSIOP_ISTAT);
        if (stat & OSIOP_ISTAT_SIP)
                osiop_read_1(sc, OSIOP_SSTAT0);
+       delay(25);
        if (stat & OSIOP_ISTAT_DIP)
                osiop_read_1(sc, OSIOP_DSTAT);