From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 9A82D923A for ; Thu, 15 Oct 2015 04:05:02 +0200 (CEST) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP; 14 Oct 2015 19:04:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,683,1437462000"; d="scan'208";a="581021983" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by FMSMGA003.fm.intel.com with ESMTP; 14 Oct 2015 19:04:53 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t9F24oJY005104; Thu, 15 Oct 2015 10:04:50 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id t9F24l54005942; Thu, 15 Oct 2015 10:04:49 +0800 Received: (from wenzhuol@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t9F24l6K005938; Thu, 15 Oct 2015 10:04:47 +0800 From: Wenzhuo Lu To: dev@dpdk.org Date: Thu, 15 Oct 2015 10:03:38 +0800 Message-Id: <1444874628-5453-26-git-send-email-wenzhuo.lu@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1444874628-5453-1-git-send-email-wenzhuo.lu@intel.com> References: <1444804479-14840-1-git-send-email-wenzhuo.lu@intel.com> <1444874628-5453-1-git-send-email-wenzhuo.lu@intel.com> Subject: [dpdk-dev] [PATCH v2 25/35] e1000/base: set correct value of beacon duration X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Oct 2015 02:05:03 -0000 Fix for I217 Packet Loss issue - The Management Engine sets the FEXTNVM4 Beacon Duration incorrectly. This fix ensures that the correct value will always be set. Correct value for this field is 8 usec. Signed-off-by: Wenzhuo Lu --- drivers/net/e1000/base/e1000_ich8lan.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/net/e1000/base/e1000_ich8lan.c b/drivers/net/e1000/base/e1000_ich8lan.c index 56e20b4..7b7c631 100644 --- a/drivers/net/e1000/base/e1000_ich8lan.c +++ b/drivers/net/e1000/base/e1000_ich8lan.c @@ -1483,6 +1483,20 @@ STATIC s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw) return ret_val; } + /* I217 Packet Loss issue: + * ensure that FEXTNVM4 Beacon Duration is set correctly + * on power up. + * Set the Beacon Duration for I217 to 8 usec + */ + if (hw->mac.type == e1000_pch_lpt) { + u32 mac_reg; + + mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM4); + mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK; + mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_8USEC; + E1000_WRITE_REG(hw, E1000_FEXTNVM4, mac_reg); + } + /* Work-around I218 hang issue */ if ((hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) || (hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_V) || -- 1.9.3