From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kok, Auke" Subject: [PATCH 12/22] e1000: Fix powerdown link loss when forced to gig speed Date: Fri, 08 Dec 2006 15:03:11 -0800 Message-ID: <20061208230311.30109.32860.stgit@gitlost.site> References: <20061208230209.30109.49157.stgit@gitlost.site> Cc: netdev@vger.kernel.org, "Brandeburg, Jesse" , "Kok, Auke" , "Kok, Auke" , "Ronciak, John" Return-path: Received: from [63.64.152.142] ([63.64.152.142]:4388 "EHLO gitlost.site" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1761264AbWLHWxF (ORCPT ); Fri, 8 Dec 2006 17:53:05 -0500 To: "Garzik, Jeff" In-Reply-To: <20061208230209.30109.49157.stgit@gitlost.site> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org disable phy power mode to prevent the NIC from attempting to autoneg to i10/100mbit when running in forced gig mode as it would lose link at shutdown. This allows you to force gig speed and still use WoL/IPMI after shutdow. Signed-off-by: Jesse Brandeburg Signed-off-by: Auke Kok --- drivers/net/e1000/e1000_main.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index c5c764f..9ddcadd 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -819,6 +819,20 @@ e1000_reset(struct e1000_adapter *adapte if (e1000_init_hw(&adapter->hw)) DPRINTK(PROBE, ERR, "Hardware Error\n"); e1000_update_mng_vlan(adapter); + + /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ + if (adapter->hw.mac_type >= e1000_82544 && + adapter->hw.mac_type <= e1000_82547_rev_2 && + adapter->hw.autoneg == 1 && + adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) { + uint32_t ctrl = E1000_READ_REG(&adapter->hw, CTRL); + /* clear phy power management bit if we are in gig only mode, + * which if enabled will attempt negotiation to 100Mb, which + * can cause a loss of link at power off or driver unload */ + ctrl &= ~E1000_CTRL_SWDPIN3; + E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); + } + /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); --- Auke Kok