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From: Pyun YongHyeon <yongari@FreeBSD.org>
Date: Mon, 28 Sep 2009 22:18:38 +0000 (UTC)
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Subject: svn commit: r197600 - head/sys/dev/alc
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Author: yongari
Date: Mon Sep 28 22:18:38 2009
New Revision: 197600
URL: http://svn.freebsd.org/changeset/base/197600

Log:
  For AR8132 fast ethernet controller, do not report 1000baseT
  capability to mii(4). Even though AR8132 uses the same model/
  revision number of F1 gigabit PHY, the PHY has no ability to
  establish 1000baseT link. I have no idea why Atheros use the same
  device/model id for this PHY.
  With this change atphy(4) does not report 1000baseT media
  capability and manual 1000baseT configuration is also disabled
  which is more desirable behavior for 10/100Mbps PHY.

Modified:
  head/sys/dev/alc/if_alc.c

Modified: head/sys/dev/alc/if_alc.c
==============================================================================
--- head/sys/dev/alc/if_alc.c	Mon Sep 28 22:03:44 2009	(r197599)
+++ head/sys/dev/alc/if_alc.c	Mon Sep 28 22:18:38 2009	(r197600)
@@ -234,6 +234,16 @@ alc_miibus_readreg(device_t dev, int phy
 	if (phy != sc->alc_phyaddr)
 		return (0);
 
+	/*
+	 * For AR8132 fast ethernet controller, do not report 1000baseT
+	 * capability to mii(4). Even though AR8132 uses the same
+	 * model/revision number of F1 gigabit PHY, the PHY has no
+	 * ability to establish 1000baseT link.
+	 */
+	if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
+	    reg == MII_EXTSR)
+		return (0);
+
 	CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
 	    MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
 	for (i = ALC_PHY_TIMEOUT; i > 0; i--) {