[src/trunk]: src/sys/dev/pci Use the 64-bit PCI DMA tag if available.

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

details:   https://anonhg.NetBSD.org/src/rev/ec37a66ebccf
branches:  trunk
changeset: 969783:ec37a66ebccf
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Sun Mar 01 15:15:49 2020 +0000

description:
Use the 64-bit PCI DMA tag if available.

diffstat:

 sys/dev/pci/if_et.c |  10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diffs (34 lines):

diff -r 42397cc65411 -r ec37a66ebccf sys/dev/pci/if_et.c
--- a/sys/dev/pci/if_et.c       Sun Mar 01 15:11:31 2020 +0000
+++ b/sys/dev/pci/if_et.c       Sun Mar 01 15:15:49 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_et.c,v 1.31 2020/02/28 05:13:19 msaitoh Exp $       */
+/*     $NetBSD: if_et.c,v 1.32 2020/03/01 15:15:49 thorpej Exp $       */
 /*     $OpenBSD: if_et.c,v 1.12 2008/07/11 09:29:02 kevlo $    */
 /*
  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_et.c,v 1.31 2020/02/28 05:13:19 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_et.c,v 1.32 2020/03/01 15:15:49 thorpej Exp $");
 
 #include "opt_inet.h"
 #include "vlan.h"
@@ -230,10 +230,14 @@
        }
        aprint_normal_dev(self, "interrupting at %s\n", intrstr);
 
-       sc->sc_dmat = pa->pa_dmat;
        sc->sc_pct = pa->pa_pc;
        sc->sc_pcitag = pa->pa_tag;
 
+       if (pci_dma64_available(pa))
+               sc->sc_dmat = pa->pa_dmat64;
+       else
+               sc->sc_dmat = pa->pa_dmat;
+
        if (pa->pa_id == PCI_PRODUCT_LUCENT_ET1301)
                sc->sc_flags |= ET_FLAG_FASTETHER;