From patchwork Tue Oct 27 14:58:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 8078 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id A5B3D8D9D; Tue, 27 Oct 2015 15:58:28 +0100 (CET) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 4E43E8D9C for ; Tue, 27 Oct 2015 15:58:27 +0100 (CET) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP; 27 Oct 2015 07:58:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,205,1444719600"; d="scan'208";a="672746478" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by orsmga003.jf.intel.com with ESMTP; 27 Oct 2015 07:58:25 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t9REwOmb019990; Tue, 27 Oct 2015 22:58:24 +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 t9REwKnh026952; Tue, 27 Oct 2015 22:58:23 +0800 Received: (from yliu84x@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t9REwKvC026948; Tue, 27 Oct 2015 22:58:20 +0800 From: Yong Liu To: dev@dpdk.org Date: Tue, 27 Oct 2015 22:58:11 +0800 Message-Id: <1445957897-26909-2-git-send-email-yong.liu@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1445957897-26909-1-git-send-email-yong.liu@intel.com> References: <1445957897-26909-1-git-send-email-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v2 1/7] e1000: add rx interrupt support 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Enable rx interrupt support on e1000 physical and emulated device. Signed-off-by: Marvin Liu diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c index 912f5dd..3be8269 100644 --- a/drivers/net/e1000/em_ethdev.c +++ b/drivers/net/e1000/em_ethdev.c @@ -81,6 +81,7 @@ static int eth_em_flow_ctrl_get(struct rte_eth_dev *dev, static int eth_em_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf); static int eth_em_interrupt_setup(struct rte_eth_dev *dev); +static int eth_em_rxq_interrupt_setup(struct rte_eth_dev *dev); static int eth_em_interrupt_get_status(struct rte_eth_dev *dev); static int eth_em_interrupt_action(struct rte_eth_dev *dev); static void eth_em_interrupt_handler(struct rte_intr_handle *handle, @@ -107,6 +108,7 @@ static void em_vlan_hw_strip_disable(struct rte_eth_dev *dev); static void eth_em_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on); */ +static void em_rxq_intr_enable(struct e1000_hw *hw); static int eth_em_led_on(struct rte_eth_dev *dev); static int eth_em_led_off(struct rte_eth_dev *dev); @@ -608,6 +610,9 @@ eth_em_start(struct rte_eth_dev *dev) return ret; } } + /* check if rxq interrupt is enabled */ + if (dev->data->dev_conf.intr_conf.rxq != 0) + eth_em_rxq_interrupt_setup(dev); adapter->stopped = 0; @@ -1277,6 +1282,42 @@ eth_em_interrupt_setup(struct rte_eth_dev *dev) } /* + * It clears the interrupt causes and enables the interrupt. + * It will be called once only during nic initialized. + * + * @param dev + * Pointer to struct rte_eth_dev. + * + * @return + * - On success, zero. + * - On failure, a negative value. + */ +static int +eth_em_rxq_interrupt_setup(struct rte_eth_dev *dev) +{ + struct e1000_hw *hw = + E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + E1000_READ_REG(hw, E1000_ICR); + em_rxq_intr_enable(hw); + return 0; +} + +/* + * It enable receive packet interrupt. + * @param hw + * Pointer to struct e1000_hw + * + * @return + */ +static void +em_rxq_intr_enable(struct e1000_hw *hw) +{ + E1000_WRITE_REG(hw, E1000_IMS, E1000_IMS_RXT0); + E1000_WRITE_FLUSH(hw); +} + +/* * It reads ICR and gets interrupt causes, check it and set a bit flag * to update link status. *