[dpdk-dev] [PATCH v6 13/22] net/atlantic: add Rx/Tx descriptors information

[Igor Russkikh <Igor.Russkikh@aquantia.com>]

From: Pavel Belous <Pavel.Belous@aquantia.com>

Add support for Rx/Tx descriptors status information.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com>
---
 doc/guides/nics/features/atlantic.ini |   2 +
 drivers/net/atlantic/atl_ethdev.c     |   7 +++
 drivers/net/atlantic/atl_ethdev.h     |  11 ++++
 drivers/net/atlantic/atl_rxtx.c       | 103 ++++++++++++++++++++++++++++++++++
 4 files changed, 123 insertions(+)

diff --git a/doc/guides/nics/features/atlantic.ini b/doc/guides/nics/features/atlantic.ini
index 4056d4daacc8..cea9787ba1a9 100644
--- a/doc/guides/nics/features/atlantic.ini
+++ b/doc/guides/nics/features/atlantic.ini
@@ -13,6 +13,8 @@ CRC offload          = Y
 L3 checksum offload  = Y
 L4 checksum offload  = Y
 Packet type parsing  = Y
+Rx descriptor status = Y
+Tx descriptor status = Y
 Basic stats          = Y
 Extended stats       = Y
 Stats per queue      = Y
diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c
index b1e7e3030d57..d76d071dc3e7 100644
--- a/drivers/net/atlantic/atl_ethdev.c
+++ b/drivers/net/atlantic/atl_ethdev.c
@@ -191,6 +191,13 @@ static const struct eth_dev_ops atl_eth_dev_ops = {
 
 	.rx_queue_intr_enable = atl_dev_rx_queue_intr_enable,
 	.rx_queue_intr_disable = atl_dev_rx_queue_intr_disable,
+
+	.rx_queue_count       = atl_rx_queue_count,
+	.rx_descriptor_status = atl_dev_rx_descriptor_status,
+	.tx_descriptor_status = atl_dev_tx_descriptor_status,
+
+	.rxq_info_get	      = atl_rxq_info_get,
+	.txq_info_get	      = atl_txq_info_get,
 };
 
 static inline int32_t
diff --git a/drivers/net/atlantic/atl_ethdev.h b/drivers/net/atlantic/atl_ethdev.h
index dc48c134b7b8..c315e0436dca 100644
--- a/drivers/net/atlantic/atl_ethdev.h
+++ b/drivers/net/atlantic/atl_ethdev.h
@@ -52,6 +52,11 @@ int atl_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 		uint16_t nb_tx_desc, unsigned int socket_id,
 		const struct rte_eth_txconf *tx_conf);
 
+uint32_t atl_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id);
+
+int atl_dev_rx_descriptor_status(void *rx_queue, uint16_t offset);
+int atl_dev_tx_descriptor_status(void *tx_queue, uint16_t offset);
+
 int atl_dev_rx_queue_intr_enable(struct rte_eth_dev *eth_dev,
 				 uint16_t queue_id);
 int atl_dev_rx_queue_intr_disable(struct rte_eth_dev *eth_dev,
@@ -70,6 +75,12 @@ int atl_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 int atl_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id);
 int atl_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id);
 
+void atl_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+	struct rte_eth_rxq_info *qinfo);
+
+void atl_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+	struct rte_eth_txq_info *qinfo);
+
 uint16_t atl_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		uint16_t nb_pkts);
 
diff --git a/drivers/net/atlantic/atl_rxtx.c b/drivers/net/atlantic/atl_rxtx.c
index c51d24d74ed2..fbd50a766098 100644
--- a/drivers/net/atlantic/atl_rxtx.c
+++ b/drivers/net/atlantic/atl_rxtx.c
@@ -651,6 +651,109 @@ atl_stop_queues(struct rte_eth_dev *dev)
 	return 0;
 }
 
+void
+atl_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+		 struct rte_eth_rxq_info *qinfo)
+{
+	struct atl_rx_queue *rxq;
+
+	PMD_INIT_FUNC_TRACE();
+
+	rxq = dev->data->rx_queues[queue_id];
+
+	qinfo->mp = rxq->mb_pool;
+	qinfo->scattered_rx = dev->data->scattered_rx;
+	qinfo->nb_desc = rxq->nb_rx_desc;
+}
+
+void
+atl_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+		 struct rte_eth_txq_info *qinfo)
+{
+	struct atl_tx_queue *txq;
+
+	PMD_INIT_FUNC_TRACE();
+
+	txq = dev->data->tx_queues[queue_id];
+
+	qinfo->nb_desc = txq->nb_tx_desc;
+}
+
+/* Return Rx queue avail count */
+
+uint32_t
+atl_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
+{
+	struct atl_rx_queue *rxq;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (rx_queue_id >= dev->data->nb_rx_queues) {
+		PMD_DRV_LOG(ERR, "Invalid RX queue id=%d", rx_queue_id);
+		return 0;
+	}
+
+	rxq = dev->data->rx_queues[rx_queue_id];
+
+	if (rxq == NULL)
+		return 0;
+
+	return rxq->nb_rx_desc - rxq->nb_rx_hold;
+}
+
+int
+atl_dev_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+	struct atl_rx_queue *rxq = rx_queue;
+	struct hw_atl_rxd_wb_s *rxd;
+	uint32_t idx;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (unlikely(offset >= rxq->nb_rx_desc))
+		return -EINVAL;
+
+	if (offset >= rxq->nb_rx_desc - rxq->nb_rx_hold)
+		return RTE_ETH_RX_DESC_UNAVAIL;
+
+	idx = rxq->rx_tail + offset;
+
+	if (idx >= rxq->nb_rx_desc)
+		idx -= rxq->nb_rx_desc;
+
+	rxd = (struct hw_atl_rxd_wb_s *)&rxq->hw_ring[idx];
+
+	if (rxd->dd)
+		return RTE_ETH_RX_DESC_DONE;
+
+	return RTE_ETH_RX_DESC_AVAIL;
+}
+
+int
+atl_dev_tx_descriptor_status(void *tx_queue, uint16_t offset)
+{
+	struct atl_tx_queue *txq = tx_queue;
+	struct hw_atl_txd_s *txd;
+	uint32_t idx;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (unlikely(offset >= txq->nb_tx_desc))
+		return -EINVAL;
+
+	idx = txq->tx_tail + offset;
+
+	if (idx >= txq->nb_tx_desc)
+		idx -= txq->nb_tx_desc;
+
+	txd = &txq->hw_ring[idx];
+
+	if (txd->dd)
+		return RTE_ETH_TX_DESC_DONE;
+
+	return RTE_ETH_TX_DESC_FULL;
+}
+
 static int
 atl_rx_enable_intr(struct rte_eth_dev *dev, uint16_t queue_id, bool enable)
 {
-- 
2.7.4