From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id E35E08E92 for ; Thu, 15 Oct 2015 04:04:05 +0200 (CEST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga101.fm.intel.com with ESMTP; 14 Oct 2015 19:04:05 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,683,1437462000"; d="scan'208";a="826988316" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by orsmga002.jf.intel.com with ESMTP; 14 Oct 2015 19:04:05 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t9F242OD004284; Thu, 15 Oct 2015 10:04:02 +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 t9F23xTb005515; Thu, 15 Oct 2015 10:04:01 +0800 Received: (from wenzhuol@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t9F23wDM005511; Thu, 15 Oct 2015 10:03:58 +0800 From: Wenzhuo Lu To: dev@dpdk.org Date: Thu, 15 Oct 2015 10:03:17 +0800 Message-Id: <1444874628-5453-5-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 04/35] 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Oct 2015 02:04:06 -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 --- 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