From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <wenzhuol@shecgisg004.sh.intel.com> Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 8B7E18E96 for <dev@dpdk.org>; Wed, 14 Oct 2015 08:35:02 +0200 (CEST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP; 13 Oct 2015 23:35:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,681,1437462000"; d="scan'208";a="810563537" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by fmsmga001.fm.intel.com with ESMTP; 13 Oct 2015 23:34:57 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t9E6YrlV031070; Wed, 14 Oct 2015 14:34:53 +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 t9E6YnB1014902; Wed, 14 Oct 2015 14:34:52 +0800 Received: (from wenzhuol@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t9E6Yn82014898; Wed, 14 Oct 2015 14:34:49 +0800 From: Wenzhuo Lu <wenzhuo.lu@intel.com> To: dev@dpdk.org Date: Wed, 14 Oct 2015 14:34:09 +0800 Message-Id: <1444804479-14840-5-git-send-email-wenzhuo.lu@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1444804479-14840-1-git-send-email-wenzhuo.lu@intel.com> References: <1444804479-14840-1-git-send-email-wenzhuo.lu@intel.com> Subject: [dpdk-dev] [PATCH 04/34] e1000/base: fix issue with jumbo frame CRC failures in client X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK <dev.dpdk.org> List-Unsubscribe: <http://dpdk.org/ml/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://dpdk.org/ml/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <http://dpdk.org/ml/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> X-List-Received-Date: Wed, 14 Oct 2015 06:35:03 -0000 This is a patch to change the value of register 776.20[11:2] for jumbo mode from 0x1A to 0x1F. This is to enlarge the gap between read and write pointers in the TX Fifo. And replace the magic number with a macro by the way. Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com> --- drivers/net/e1000/base/e1000_defines.h | 1 + drivers/net/e1000/base/e1000_ich8lan.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/e1000/base/e1000_defines.h b/drivers/net/e1000/base/e1000_defines.h index 71bd2e0..79a88bb 100644 --- a/drivers/net/e1000/base/e1000_defines.h +++ b/drivers/net/e1000/base/e1000_defines.h @@ -468,6 +468,7 @@ POSSIBILITY OF SUCH DAMAGE. #define ETHERNET_FCS_SIZE 4 #define MAX_JUMBO_FRAME_SIZE 0x3F00 +#define E1000_TX_PTR_GAP 0x1F /* Extended Configuration Control and Size */ #define E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP 0x00000020 diff --git a/drivers/net/e1000/base/e1000_ich8lan.c b/drivers/net/e1000/base/e1000_ich8lan.c index f23d810..cc6e033 100644 --- a/drivers/net/e1000/base/e1000_ich8lan.c +++ b/drivers/net/e1000/base/e1000_ich8lan.c @@ -2601,7 +2601,7 @@ s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable) return ret_val; hw->phy.ops.read_reg(hw, PHY_REG(776, 20), &data); data &= ~(0x3FF << 2); - data |= (0x1A << 2); + data |= (E1000_TX_PTR_GAP << 2); ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 20), data); if (ret_val) return ret_val; -- 1.9.3