[src/trunk]: src/sys/dev/pci Tell the MII layer to advertise PAUSE capability...

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

details:   https://anonhg.NetBSD.org/src/rev/b936114a3806
branches:  trunk
changeset: 513297:b936114a3806
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Fri Jul 27 22:46:20 2001 +0000

description:
Tell the MII layer to advertise PAUSE capability, and configure
the chip's PAUSE threshold.

diffstat:

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

diffs (32 lines):

diff -r 8fcdd5942609 -r b936114a3806 sys/dev/pci/if_stge.c
--- a/sys/dev/pci/if_stge.c     Fri Jul 27 22:44:59 2001 +0000
+++ b/sys/dev/pci/if_stge.c     Fri Jul 27 22:46:20 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_stge.c,v 1.4 2001/07/25 15:44:48 thorpej Exp $      */
+/*     $NetBSD: if_stge.c,v 1.5 2001/07/27 22:46:20 thorpej Exp $      */
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -591,7 +591,7 @@
        ifmedia_init(&sc->sc_mii.mii_media, 0, stge_mediachange,
            stge_mediastatus);
        mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff, MII_PHY_ANY,
-           MII_OFFSET_ANY, 0);
+           MII_OFFSET_ANY, MIIF_DOPAUSE);
        if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
                ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
                ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE);
@@ -1554,8 +1554,12 @@
            DMAC_TxBurstLimit(3));
 
        /*
-        * XXX Configure flow control thresholds.
+        * Send a PAUSE frame when we reach 29,696 bytes in the Rx
+        * FIFO, and send an un-PAUSE frame when the FIFO is totally
+        * empty again.
         */
+       bus_space_write_4(st, sh, STGE_FlowOnTresh, 29696 / 16);
+       bus_space_write_4(st, sh, STGE_FlowOffThresh, 0);
 
        /*
         * Set the maximum frame size.