From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wenzhuo Lu Subject: [PATCH 13/16] e1000/base: ability to force K1-off disabled Date: Wed, 23 Nov 2016 12:22:57 -0500 Message-ID: <1479921780-9813-14-git-send-email-wenzhuo.lu@intel.com> References: <1479921780-9813-1-git-send-email-wenzhuo.lu@intel.com> Cc: Wenzhuo Lu To: dev@dpdk.org Return-path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id 32A3E47CD for ; Thu, 24 Nov 2016 02:32:18 +0100 (CET) In-Reply-To: <1479921780-9813-1-git-send-email-wenzhuo.lu@intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" MAC-PHY desync may occur causing misdetection of link up event. Disabling K1-off feature can work around the problem. Signed-off-by: Wenzhuo Lu --- drivers/net/e1000/base/e1000_hw.h | 1 + drivers/net/e1000/base/e1000_ich8lan.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/drivers/net/e1000/base/e1000_hw.h b/drivers/net/e1000/base/e1000_hw.h index 14e2e87..39a2a41 100644 --- a/drivers/net/e1000/base/e1000_hw.h +++ b/drivers/net/e1000/base/e1000_hw.h @@ -960,6 +960,7 @@ struct e1000_dev_spec_ich8lan { E1000_MUTEX nvm_mutex; E1000_MUTEX swflag_mutex; bool nvm_k1_enabled; + bool disable_k1_off; bool eee_disable; u16 eee_lp_ability; #ifdef ULP_SUPPORT diff --git a/drivers/net/e1000/base/e1000_ich8lan.c b/drivers/net/e1000/base/e1000_ich8lan.c index 89265d2..92d92c8 100644 --- a/drivers/net/e1000/base/e1000_ich8lan.c +++ b/drivers/net/e1000/base/e1000_ich8lan.c @@ -1688,6 +1688,9 @@ STATIC s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw) fextnvm6 &= ~E1000_FEXTNVM6_K1_OFF_ENABLE; } + if (hw->dev_spec.ich8lan.disable_k1_off == true) + fextnvm6 &= ~E1000_FEXTNVM6_K1_OFF_ENABLE; + E1000_WRITE_REG(hw, E1000_FEXTNVM6, fextnvm6); } -- 1.9.3