X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fe1000%2Fem_ethdev.c;h=a009bc25531ba5356c4333a7d3512fce52d0d9cf;hb=b4755467c9f50c87dce1bfa910765cedf2c1b43d;hp=4e75101940ac6b6588f37af52426f4140c224137;hpb=667b9313f9ed513057fda21ecd92cb8fa13bb7e1;p=dpdk.git

diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c
index 4e75101940..a009bc2553 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,
@@ -107,10 +108,16 @@ 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 int eth_em_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id);
+static int eth_em_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id);
+static void em_lsc_intr_disable(struct e1000_hw *hw);
+static void em_rxq_intr_enable(struct e1000_hw *hw);
+static void em_rxq_intr_disable(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);
 
-static void em_intr_disable(struct e1000_hw *hw);
 static int em_get_rx_buffer_size(struct e1000_hw *hw);
 static void eth_em_rar_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
 		uint32_t index, uint32_t pool);
@@ -159,6 +166,8 @@ static const struct eth_dev_ops eth_em_ops = {
 	.rx_descriptor_done   = eth_em_rx_descriptor_done,
 	.tx_queue_setup       = eth_em_tx_queue_setup,
 	.tx_queue_release     = eth_em_tx_queue_release,
+	.rx_queue_intr_enable = eth_em_rx_queue_intr_enable,
+	.rx_queue_intr_disable = eth_em_rx_queue_intr_disable,
 	.dev_led_on           = eth_em_led_on,
 	.dev_led_off          = eth_em_led_off,
 	.flow_ctrl_get        = eth_em_flow_ctrl_get,
@@ -166,6 +175,8 @@ static const struct eth_dev_ops eth_em_ops = {
 	.mac_addr_add         = eth_em_rar_set,
 	.mac_addr_remove      = eth_em_rar_clear,
 	.set_mc_addr_list     = eth_em_set_mc_addr_list,
+	.rxq_info_get         = em_rxq_info_get,
+	.txq_info_get         = em_txq_info_get,
 };
 
 /**
@@ -492,7 +503,9 @@ eth_em_start(struct rte_eth_dev *dev)
 		E1000_DEV_PRIVATE(dev->data->dev_private);
 	struct e1000_hw *hw =
 		E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
 	int ret, mask;
+	uint32_t intr_vector = 0;
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -528,6 +541,26 @@ eth_em_start(struct rte_eth_dev *dev)
 	/* Configure for OS presence */
 	em_init_manageability(hw);
 
+	if (dev->data->dev_conf.intr_conf.rxq != 0) {
+		intr_vector = dev->data->nb_rx_queues;
+		if (rte_intr_efd_enable(intr_handle, intr_vector))
+			return -1;
+	}
+
+	if (rte_intr_dp_is_en(intr_handle)) {
+		intr_handle->intr_vec =
+			rte_zmalloc("intr_vec",
+					dev->data->nb_rx_queues * sizeof(int), 0);
+		if (intr_handle->intr_vec == NULL) {
+			PMD_INIT_LOG(ERR, "Failed to allocate %d rx_queues"
+						" intr_vec\n", dev->data->nb_rx_queues);
+			return -ENOMEM;
+		}
+
+		/* enable rx interrupt */
+		em_rxq_intr_enable(hw);
+	}
+
 	eth_em_tx_init(dev);
 
 	ret = eth_em_rx_init(dev);
@@ -599,15 +632,28 @@ eth_em_start(struct rte_eth_dev *dev)
 	}
 	e1000_setup_link(hw);
 
-	/* check if lsc interrupt feature is enabled */
-	if (dev->data->dev_conf.intr_conf.lsc != 0) {
-		ret = eth_em_interrupt_setup(dev);
-		if (ret) {
-			PMD_INIT_LOG(ERR, "Unable to setup interrupts");
-			em_dev_clear_queues(dev);
-			return ret;
-		}
+	if (rte_intr_allow_others(intr_handle)) {
+		/* check if lsc interrupt is enabled */
+		if (dev->data->dev_conf.intr_conf.lsc != 0)
+			ret = eth_em_interrupt_setup(dev);
+			if (ret) {
+				PMD_INIT_LOG(ERR, "Unable to setup interrupts");
+				em_dev_clear_queues(dev);
+				return ret;
+			}
+	} else {
+		rte_intr_callback_unregister(intr_handle,
+						eth_em_interrupt_handler,
+						(void *)dev);
+		if (dev->data->dev_conf.intr_conf.lsc != 0)
+			PMD_INIT_LOG(INFO, "lsc won't enable because of"
+				     " no intr multiplex\n");
 	}
+	/* check if rxq interrupt is enabled */
+	if (dev->data->dev_conf.intr_conf.rxq != 0)
+		eth_em_rxq_interrupt_setup(dev);
+
+	rte_intr_enable(intr_handle);
 
 	adapter->stopped = 0;
 
@@ -634,8 +680,11 @@ eth_em_stop(struct rte_eth_dev *dev)
 {
 	struct rte_eth_link link;
 	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
+
+	em_rxq_intr_disable(hw);
+	em_lsc_intr_disable(hw);
 
-	em_intr_disable(hw);
 	e1000_reset_hw(hw);
 	if (hw->mac.type >= e1000_82544)
 		E1000_WRITE_REG(hw, E1000_WUC, 0);
@@ -648,6 +697,19 @@ eth_em_stop(struct rte_eth_dev *dev)
 	/* clear the recorded link status */
 	memset(&link, 0, sizeof(link));
 	rte_em_dev_atomic_write_link_status(dev, &link);
+
+	if (!rte_intr_allow_others(intr_handle))
+		/* resume to the default handler */
+		rte_intr_callback_register(intr_handle,
+					   eth_em_interrupt_handler,
+					   (void *)dev);
+
+	/* Clean datapath event and queue/vec mapping */
+	rte_intr_efd_disable(intr_handle);
+	if (intr_handle->intr_vec != NULL) {
+		rte_free(intr_handle->intr_vec);
+		intr_handle->intr_vec = NULL;
+	}
 }
 
 static void
@@ -882,6 +944,27 @@ eth_em_stats_reset(struct rte_eth_dev *dev)
 	memset(hw_stats, 0, sizeof(*hw_stats));
 }
 
+static int
+eth_em_rx_queue_intr_enable(struct rte_eth_dev *dev, __rte_unused uint16_t queue_id)
+{
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+	em_rxq_intr_enable(hw);
+	rte_intr_enable(&dev->pci_dev->intr_handle);
+
+	return 0;
+}
+
+static int
+eth_em_rx_queue_intr_disable(struct rte_eth_dev *dev, __rte_unused uint16_t queue_id)
+{
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+	em_rxq_intr_disable(hw);
+
+	return 0;
+}
+
 static uint32_t
 em_get_max_pktlen(const struct e1000_hw *hw)
 {
@@ -933,6 +1016,18 @@ eth_em_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 
 	dev_info->max_rx_queues = 1;
 	dev_info->max_tx_queues = 1;
+
+	dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
+		.nb_max = E1000_MAX_RING_DESC,
+		.nb_min = E1000_MIN_RING_DESC,
+		.nb_align = EM_RXD_ALIGN,
+	};
+
+	dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
+		.nb_max = E1000_MAX_RING_DESC,
+		.nb_min = E1000_MIN_RING_DESC,
+		.nb_align = EM_TXD_ALIGN,
+	};
 }
 
 /* return 0 means link status changed, -1 means not changed */
@@ -1249,13 +1344,7 @@ eth_em_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 	}
 }
 
-static void
-em_intr_disable(struct e1000_hw *hw)
-{
-	E1000_WRITE_REG(hw, E1000_IMC, ~0);
-}
-
-/**
+/*
  * It enables the interrupt mask and then enable the interrupt.
  *
  * @param dev
@@ -1279,6 +1368,71 @@ eth_em_interrupt_setup(struct rte_eth_dev *dev)
 	return (0);
 }
 
+/*
+ * 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 disabled lsc interrupt.
+ * @param hw
+ * Pointer to struct e1000_hw
+ *
+ * @return
+ */
+static void
+em_lsc_intr_disable(struct e1000_hw *hw)
+{
+	E1000_WRITE_REG(hw, E1000_IMC, E1000_IMS_LSC);
+	E1000_WRITE_FLUSH(hw);
+}
+
+/*
+ * It disabled receive packet interrupt.
+ * @param hw
+ * Pointer to struct e1000_hw
+ *
+ * @return
+ */
+static void
+em_rxq_intr_disable(struct e1000_hw *hw)
+{
+	E1000_READ_REG(hw, E1000_ICR);
+	E1000_WRITE_REG(hw, E1000_IMC, 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.