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From: Yong Liu <yong.liu@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v3 1/8] e1000: add rx interrupt support
Date: Thu, 29 Oct 2015 17:18:38 +0800	[thread overview]
Message-ID: <1446110325-14148-2-git-send-email-yong.liu@intel.com> (raw)
In-Reply-To: <1446110325-14148-1-git-send-email-yong.liu@intel.com>

Enable rx interrupt support on e1000 physical and emulated device.

Signed-off-by: Marvin Liu <yong.liu@intel.com>

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.
  *
-- 
1.9.3

  reply	other threads:[~2015-10-29  9:19 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-29  9:18 [dpdk-dev] [PATCH v3 0/8] interrupt mode for e1000 Yong Liu
2015-10-29  9:18 ` Yong Liu [this message]
2015-10-29  9:18 ` [dpdk-dev] [PATCH v3 2/8] e1000: separate lsc and rxq interrupt disable function Yong Liu
2015-10-29  9:18 ` [dpdk-dev] [PATCH v3 3/8] e1000: add ethdev rxq enable and " Yong Liu
2015-10-29  9:18 ` [dpdk-dev] [PATCH v3 4/8] e1000: add rxq interrupt handler Yong Liu
2015-10-29  9:18 ` [dpdk-dev] [PATCH v3 5/8] e1000: check lsc and rxq not enable in the same time Yong Liu
2015-10-29  9:18 ` [dpdk-dev] [PATCH v3 6/8] e1000: lsc interrupt setup function only enable itself Yong Liu
2015-10-29  9:18 ` [dpdk-dev] [PATCH v3 7/8] l3fwd-power: disable interrupt when wake up from sleep Yong Liu
2015-10-29  9:18 ` [dpdk-dev] [PATCH v3 8/8] doc: release note update for e1000 intr mode Yong Liu
2015-10-29 10:19 ` [dpdk-dev] [PATCH v3 0/8] interrupt mode for e1000 Liang, Cunming

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