[src/trunk]: src/sys/dev/pci gffb(4): Use bus_space_barrier, not membar_sync.

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

details:   https://anonhg.NetBSD.org/src/rev/cc3fe35fd0b9
branches:  trunk
changeset: 363404:cc3fe35fd0b9
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Thu Mar 10 00:14:25 2022 +0000

description:
gffb(4): Use bus_space_barrier, not membar_sync.

diffstat:

 sys/dev/pci/gffb.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (33 lines):

diff -r f5fb5ab33092 -r cc3fe35fd0b9 sys/dev/pci/gffb.c
--- a/sys/dev/pci/gffb.c        Thu Mar 10 00:14:16 2022 +0000
+++ b/sys/dev/pci/gffb.c        Thu Mar 10 00:14:25 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: gffb.c,v 1.17 2021/08/07 16:19:14 thorpej Exp $        */
+/*     $NetBSD: gffb.c,v 1.18 2022/03/10 00:14:25 riastradh Exp $      */
 
 /*
  * Copyright (c) 2013 Michael Lorenz
@@ -35,7 +35,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gffb.c,v 1.17 2021/08/07 16:19:14 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gffb.c,v 1.18 2022/03/10 00:14:25 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -684,10 +684,12 @@
 
        if (sc->sc_current != sc->sc_put) {
                sc->sc_put = sc->sc_current;
-               membar_sync();
+               bus_space_barrier(sc->sc_memt, sc->sc_fbh, 0, 0x1000000,
+                   BUS_SPACE_BARRIER_WRITE);
                (void)*sc->sc_fbaddr;
                GFFB_WRITE_4(GFFB_FIFO_PUT, sc->sc_put);
-               membar_sync();
+               bus_space_barrier(sc->sc_memt, sc->sc_regh, GFFB_FIFO_PUT, 4,
+                   BUS_SPACE_BARRIER_WRITE);
        }
 }