From owner-freebsd-hackers@FreeBSD.ORG  Sun Oct 24 17:18:32 2004
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 8D24216A4CE
	for <hackers@freebsd.org>; Sun, 24 Oct 2004 17:18:32 +0000 (GMT)
Received: from error404.nls.net (error404.nls.net [216.144.36.24])
	by mx1.FreeBSD.org (Postfix) with ESMTP id F09BB43D45
	for <hackers@freebsd.org>; Sun, 24 Oct 2004 17:18:31 +0000 (GMT)
	(envelope-from ketrien@error404.nls.net)
Received: from [192.168.0.100] (eiterra.achedra.org [192.168.0.100])
	by error404.nls.net (8.12.10/8.12.10) with ESMTP id i9OHIIqP019901;
	Sun, 24 Oct 2004 13:18:18 -0400 (EDT)
	(envelope-from ketrien@error404.nls.net)
Message-ID: <417BE411.8070500@error404.nls.net>
Date: Sun, 24 Oct 2004 13:19:13 -0400
From: "Ketrien I. Saihr-Kesenchedra" <ketrien@error404.nls.net>
User-Agent: Mozilla Thunderbird 0.7.3 (Windows/20040803)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: hackers@freebsd.org, soralx@cydem.org
References: <200410132110.09915.soralx@cydem.org>
	<200410220216.54868.soralx@cydem.org> <20041022175311.GA15960@odin.ac.hmc.edu>
	<200410231047.44788.soralx@cydem.org> <417B08B5.8080208@error404.nls.net>
In-Reply-To: <417B08B5.8080208@error404.nls.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: Re: [PATCH] Re: Linksys PCM200
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 24 Oct 2004 17:18:32 -0000

Okay, so I got unlazy and threw some stuff together. Try these patches; 
this will default the PCM200 cards to store-and-forward. This might help.
-ksaihr

--- /usr/src/sys/pci/if_dc.c    Sun Oct 24 13:09:28 2004
+++ if_dc.c     Sun Oct 24 12:59:07 2004
@@ -3022,6 +3022,16 @@
                }
        }

+       if (DC_IS_LINKSYS(sc)) {
+               /*
+                * The Linksys PCM200 fails into store and forward mode 
very quickly,
+                * so instead of waiting, start it there.
+                */
+               printf("dc%d: setting card to store and forward mode\n", 
sc->dc_unit);
+               DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD);
+       }
+
+
        printf("dc%d: TX underrun -- ", sc->dc_unit);
        sc->dc_txthresh += DC_TXTHRESH_INC;
        if (sc->dc_txthresh > DC_TXTHRESH_MAX) {

--- /usr/src/sys/pci/if_dcreg.h Thu Aug  5 13:46:14 2004
+++ if_dcreg.h  Sun Oct 24 13:09:31 2004
@@ -98,6 +98,13 @@
 #define        DC_IS_XIRCOM(x)         (x->dc_type == DC_TYPE_XIRCOM)
 #define DC_IS_CONEXANT(x)      (x->dc_type == DC_TYPE_CONEXANT)

+/* Cards requiring specific workaround */
+       /* Linksys PCM200 */
+#define DC_IS_LINKSYS(x)               \
+       (x->dc_type == DC_TYPE_AN985 &&         \
+        pci_get_vendor(dev) == DC_VENDORID_LINKSYS && \
+        pci_get_device(dev) == DC_DEVICEID_PCM200_AB08)
+
 /* MII/symbol mode port types */
 #define DC_PMODE_MII           0x1
 #define DC_PMODE_SYM           0x2