[src/trunk]: src/sys/dev/usb ohci(4): always use usb_syncmem() when reading f...

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

details:   https://anonhg.NetBSD.org/src/rev/296ad8d883a4
branches:  trunk
changeset: 972205:296ad8d883a4
user:      jakllsch <jakllsch%NetBSD.org@localhost>
date:      Tue May 19 19:09:43 2020 +0000

description:
ohci(4): always use usb_syncmem() when reading from HCCA

diffstat:

 sys/dev/usb/ohci.c |  17 +++++++++++++++--
 1 files changed, 15 insertions(+), 2 deletions(-)

diffs (52 lines):

diff -r 99972c10614a -r 296ad8d883a4 sys/dev/usb/ohci.c
--- a/sys/dev/usb/ohci.c        Tue May 19 18:57:26 2020 +0000
+++ b/sys/dev/usb/ohci.c        Tue May 19 19:09:43 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ohci.c,v 1.306 2020/05/19 18:57:26 jakllsch Exp $      */
+/*     $NetBSD: ohci.c,v 1.307 2020/05/19 19:09:43 jakllsch Exp $      */
 
 /*
  * Copyright (c) 1998, 2004, 2005, 2012 The NetBSD Foundation, Inc.
@@ -41,7 +41,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ohci.c,v 1.306 2020/05/19 18:57:26 jakllsch Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ohci.c,v 1.307 2020/05/19 19:09:43 jakllsch Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -1228,6 +1228,11 @@
        DPRINTF("               port1=0x%08jx port2=0x%08jx",
                 OREAD4(sc, OHCI_RH_PORT_STATUS(1)),
                 OREAD4(sc, OHCI_RH_PORT_STATUS(2)), 0, 0);
+       usb_syncmem(&sc->sc_hccadma,
+           offsetof(struct ohci_hcca, hcca_frame_number),
+           sizeof(sc->sc_hcca->hcca_frame_number) +
+           sizeof(sc->sc_hcca->hcca_done_head),
+           BUS_DMASYNC_POSTREAD);
        DPRINTF("         HCCA: frame_number=0x%04jx done_head=0x%08jx",
                 O32TOH(sc->sc_hcca->hcca_frame_number),
                 O32TOH(sc->sc_hcca->hcca_done_head), 0, 0);
@@ -3469,6 +3474,10 @@
 
        if (isoc->next == -1) {
                /* Not in use yet, schedule it a few frames ahead. */
+               usb_syncmem(&sc->sc_hccadma,
+                   offsetof(struct ohci_hcca, hcca_frame_number),
+                   sizeof(sc->sc_hcca->hcca_frame_number),
+                   BUS_DMASYNC_POSTREAD);
                isoc->next = O32TOH(sc->sc_hcca->hcca_frame_number) + 5;
                DPRINTFN(2,"start next=%jd", isoc->next, 0, 0, 0);
        }
@@ -3558,6 +3567,10 @@
 
 #ifdef OHCI_DEBUG
        if (ohcidebug >= 5) {
+               usb_syncmem(&sc->sc_hccadma,
+                   offsetof(struct ohci_hcca, hcca_frame_number),
+                   sizeof(sc->sc_hcca->hcca_frame_number),
+                   BUS_DMASYNC_POSTREAD);
                DPRINTF("frame=%jd", O32TOH(sc->sc_hcca->hcca_frame_number),
                    0, 0, 0);
                ohci_dump_itds(sc, xfer->ux_hcpriv);