[src/trunk]: src/sys/dev/pci/ixgbe Use 64bit DMA tag. If not, a lot of bounce...

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

details:   https://anonhg.NetBSD.org/src/rev/cf980db77158
branches:  trunk
changeset: 350735:cf980db77158
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Wed Jan 18 08:23:03 2017 +0000

description:
Use 64bit DMA tag. If not, a lot of bounce buffer is allocated.
Fixes PR#49968 reported by Hauke.

XXX pullup-[67].

diffstat:

 sys/dev/pci/ixgbe/ixgbe.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (24 lines):

diff -r 508d7c9138fa -r cf980db77158 sys/dev/pci/ixgbe/ixgbe.c
--- a/sys/dev/pci/ixgbe/ixgbe.c Wed Jan 18 08:15:22 2017 +0000
+++ b/sys/dev/pci/ixgbe/ixgbe.c Wed Jan 18 08:23:03 2017 +0000
@@ -59,7 +59,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 /*$FreeBSD: head/sys/dev/ixgbe/if_ix.c 302384 2016-07-07 03:39:18Z sbruno $*/
-/*$NetBSD: ixgbe.c,v 1.59 2017/01/05 05:53:23 msaitoh Exp $*/
+/*$NetBSD: ixgbe.c,v 1.60 2017/01/18 08:23:03 msaitoh Exp $*/
 
 #include "opt_inet.h"
 #include "opt_inet6.h"
@@ -466,7 +466,10 @@
        hw = &adapter->hw;
        adapter->osdep.pc = pa->pa_pc;
        adapter->osdep.tag = pa->pa_tag;
-       adapter->osdep.dmat = pa->pa_dmat;
+       if (pci_dma64_available(pa))
+               adapter->osdep.dmat = pa->pa_dmat64;
+       else
+               adapter->osdep.dmat = pa->pa_dmat;
        adapter->osdep.attached = false;
 
        ent = ixgbe_lookup(pa);