[src/netbsd-9]: src/sys/dev/pci Pull up following revision(s) (requested by t...

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

details:   https://anonhg.NetBSD.org/src/rev/7b796fc91fc6
branches:  netbsd-9
changeset: 745401:7b796fc91fc6
user:      martin <martin%NetBSD.org@localhost>
date:      Sun Mar 01 12:47:10 2020 +0000

description:
Pull up following revision(s) (requested by thorpej in ticket #747):

        sys/dev/pci/if_mcx.c: revision 1.11

Use the 64-bit PCI DMA tag if available.  Otherwise, we are needlessly
allocating (and using) bounce buffers on sytems with >4GB of RAM.

XXX pullup-9

diffstat:

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

diffs (21 lines):

diff -r 3d1aea37d7fd -r 7b796fc91fc6 sys/dev/pci/if_mcx.c
--- a/sys/dev/pci/if_mcx.c      Sun Mar 01 12:45:09 2020 +0000
+++ b/sys/dev/pci/if_mcx.c      Sun Mar 01 12:47:10 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_mcx.c,v 1.1.2.8 2020/01/31 11:14:50 martin Exp $ */
+/*     $NetBSD: if_mcx.c,v 1.1.2.9 2020/03/01 12:47:10 martin Exp $ */
 /*     $OpenBSD: if_mcx.c,v 1.33 2019/09/12 04:23:59 jmatthew Exp $ */
 
 /*
@@ -2215,7 +2215,10 @@
        sc->sc_dev = self;
        sc->sc_pc = pa->pa_pc;
        sc->sc_tag = pa->pa_tag;
-       sc->sc_dmat = pa->pa_dmat;
+       if (pci_dma64_available(pa))
+               sc->sc_dmat = pa->pa_dmat64;
+       else
+               sc->sc_dmat = pa->pa_dmat;
 
        /* Map the PCI memory space */
        memtype = pci_mapreg_type(sc->sc_pc, sc->sc_tag, MCX_HCA_BAR);