[src/trunk]: src/sys/dev/pci Don't use MSI on 8257[12] because of errata 63

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

details:   https://anonhg.NetBSD.org/src/rev/b697ffc93bae
branches:  trunk
changeset: 809478:b697ffc93bae
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Wed Jul 15 04:03:16 2015 +0000

description:
Don't use MSI on 8257[12] because of errata 63
"Byte Enables 2 and 3 are not set on MSI writes".

diffstat:

 sys/dev/pci/if_wm.c |  11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diffs (33 lines):

diff -r 7038a8c805b4 -r b697ffc93bae sys/dev/pci/if_wm.c
--- a/sys/dev/pci/if_wm.c       Wed Jul 15 03:54:53 2015 +0000
+++ b/sys/dev/pci/if_wm.c       Wed Jul 15 04:03:16 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_wm.c,v 1.336 2015/06/26 06:57:17 msaitoh Exp $      */
+/*     $NetBSD: if_wm.c,v 1.337 2015/07/15 04:03:16 msaitoh Exp $      */
 
 /*
  * Copyright (c) 2001, 2002, 2003, 2004 Wasabi Systems, Inc.
@@ -81,7 +81,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.336 2015/06/26 06:57:17 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.337 2015/07/15 04:03:16 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_net_mpsafe.h"
@@ -1474,8 +1474,13 @@
         *  82545: Errata  4 (easy to reproduce device timeout)
         *  82546: Errata 26 (easy to reproduce device timeout)
         *  82541: Errata  7 (easy to reproduce device timeout)
+        *
+        * "Byte Enables 2 and 3 are not set on MSI writes"
+        *
+        *  82571 & 82572: Errata 63
         */
-       if (sc->sc_type <= WM_T_82541_2)
+       if ((sc->sc_type <= WM_T_82541_2) || (sc->sc_type == WM_T_82571)
+           || (sc->sc_type == WM_T_82572))
                pa->pa_flags &= ~PCI_FLAGS_MSI_OKAY;
 
        if ((sc->sc_type == WM_T_82575) || (sc->sc_type == WM_T_82576)