[dpdk-dev] [PATCH 14/32] net/ngbe: support Rx interrupt

[Jiawen Wu <jiawenwu@trustnetic.com>]

Support Rx queue interrupt.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
---
 doc/guides/nics/features/ngbe.ini |  1 +
 doc/guides/nics/ngbe.rst          |  1 +
 drivers/net/ngbe/ngbe_ethdev.c    | 35 +++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+)

diff --git a/doc/guides/nics/features/ngbe.ini b/doc/guides/nics/features/ngbe.ini
index 1006c3935b..d14469eb43 100644
--- a/doc/guides/nics/features/ngbe.ini
+++ b/doc/guides/nics/features/ngbe.ini
@@ -7,6 +7,7 @@
 Speed capabilities   = Y
 Link status          = Y
 Link status event    = Y
+Rx interrupt         = Y
 Queue start/stop     = Y
 MTU update           = Y
 Jumbo frame          = Y
diff --git a/doc/guides/nics/ngbe.rst b/doc/guides/nics/ngbe.rst
index 50a6e85c49..2783c4a3c4 100644
--- a/doc/guides/nics/ngbe.rst
+++ b/doc/guides/nics/ngbe.rst
@@ -20,6 +20,7 @@ Features
 - Port hardware statistics
 - Jumbo frames
 - Link state information
+- Interrupt mode for RX
 - Scattered and gather for TX and RX
 - FW version
 
diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index 9caca55df3..52642161b7 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -2095,6 +2095,39 @@ ngbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	return 0;
 }
 
+static int
+ngbe_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
+{
+	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
+	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
+	uint32_t mask;
+	struct ngbe_hw *hw = ngbe_dev_hw(dev);
+
+	if (queue_id < 32) {
+		mask = rd32(hw, NGBE_IMS(0));
+		mask &= (1 << queue_id);
+		wr32(hw, NGBE_IMS(0), mask);
+	}
+	rte_intr_enable(intr_handle);
+
+	return 0;
+}
+
+static int
+ngbe_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
+{
+	uint32_t mask;
+	struct ngbe_hw *hw = ngbe_dev_hw(dev);
+
+	if (queue_id < 32) {
+		mask = rd32(hw, NGBE_IMS(0));
+		mask &= ~(1 << queue_id);
+		wr32(hw, NGBE_IMS(0), mask);
+	}
+
+	return 0;
+}
+
 /**
  * Set the IVAR registers, mapping interrupt causes to vectors
  * @param hw
@@ -2215,6 +2248,8 @@ static const struct eth_dev_ops ngbe_eth_dev_ops = {
 	.tx_queue_start	            = ngbe_dev_tx_queue_start,
 	.tx_queue_stop              = ngbe_dev_tx_queue_stop,
 	.rx_queue_setup             = ngbe_dev_rx_queue_setup,
+	.rx_queue_intr_enable       = ngbe_dev_rx_queue_intr_enable,
+	.rx_queue_intr_disable      = ngbe_dev_rx_queue_intr_disable,
 	.rx_queue_release           = ngbe_dev_rx_queue_release,
 	.tx_queue_setup             = ngbe_dev_tx_queue_setup,
 	.tx_queue_release           = ngbe_dev_tx_queue_release,
-- 
2.21.0.windows.1