[dpdk-dev] [PATCH v4 05/13] net/enetc: add basic statistics

[Gagandeep Singh <G.Singh@nxp.com>]

Enable basic statistics APIs enetc_stats_get
and enetc_stats_reset.

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
---
 doc/guides/nics/enetc.rst          |  1 +
 doc/guides/nics/features/enetc.ini |  1 +
 drivers/net/enetc/base/enetc_hw.h  | 27 +++++++++++++++++++-
 drivers/net/enetc/enetc_ethdev.c   | 41 ++++++++++++++++++++++++++++++
 4 files changed, 69 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/enetc.rst b/doc/guides/nics/enetc.rst
index 8038bf205..9f575d27f 100644
--- a/doc/guides/nics/enetc.rst
+++ b/doc/guides/nics/enetc.rst
@@ -46,6 +46,7 @@ ENETC Features
 
 - Link Status
 - Packet type information
+- Basic stats
 
 NIC Driver (PMD)
 ~~~~~~~~~~~~~~~~
diff --git a/doc/guides/nics/features/enetc.ini b/doc/guides/nics/features/enetc.ini
index 69476a2a1..d8bd5679d 100644
--- a/doc/guides/nics/features/enetc.ini
+++ b/doc/guides/nics/features/enetc.ini
@@ -6,6 +6,7 @@
 [Features]
 Packet type parsing  = Y
 Link status          = Y
+Basic stats          = Y
 Linux VFIO           = Y
 ARMv8                = Y
 Usage doc            = Y
diff --git a/drivers/net/enetc/base/enetc_hw.h b/drivers/net/enetc/base/enetc_hw.h
index e3738a695..3f0a2a9a3 100644
--- a/drivers/net/enetc/base/enetc_hw.h
+++ b/drivers/net/enetc/base/enetc_hw.h
@@ -115,8 +115,33 @@ enum enetc_bdr_type {TX, RX};
 #define ENETC_G_EIPBRR0			0x00bf8
 #define ENETC_G_EIPBRR1			0x00bfc
 
-
 /* MAC Counters */
+/* Config register to reset counters*/
+#define ENETC_PM0_STAT_CONFIG		0x080E0
+/* Receive frames counter without error */
+#define ENETC_PM0_RFRM			0x08120
+/* Receive packets counter, good + bad */
+#define ENETC_PM0_RPKT			0x08160
+/* Received octets, good + bad */
+#define ENETC_PM0_REOCT			0x08120
+/* Transmit octets, good + bad */
+#define ENETC_PM0_TEOCT			0x08200
+/* Transmit frames counter without error */
+#define ENETC_PM0_TFRM			0x08220
+/* Transmit packets counter, good + bad */
+#define ENETC_PM0_TPKT			0x08260
+/* Dropped not Truncated packets counter */
+#define ENETC_PM0_RDRNTP		0x081C8
+/* Dropped + trucated packets counter */
+#define ENETC_PM0_RDRP			0x08158
+/* Receive packets error counter */
+#define ENETC_PM0_RERR			0x08138
+/* Transmit packets error counter */
+#define ENETC_PM0_TERR			0x08238
+
+/* Stats Reset Bit*/
+#define ENETC_CLEAR_STATS		BIT(2)
+
 #define ENETC_G_EPFBLPR(n)		(0xd00 + 4 * (n))
 #define ENETC_G_EPFBLPR1_XGMII		0x80000000
 
diff --git a/drivers/net/enetc/enetc_ethdev.c b/drivers/net/enetc/enetc_ethdev.c
index 91e9692d6..10b2b396d 100644
--- a/drivers/net/enetc/enetc_ethdev.c
+++ b/drivers/net/enetc/enetc_ethdev.c
@@ -29,6 +29,9 @@ static int enetc_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 		const struct rte_eth_txconf *tx_conf);
 static void enetc_tx_queue_release(void *txq);
 static const uint32_t *enetc_supported_ptypes_get(struct rte_eth_dev *dev);
+static int enetc_stats_get(struct rte_eth_dev *dev,
+		struct rte_eth_stats *stats);
+static void enetc_stats_reset(struct rte_eth_dev *dev);
 
 /*
  * The set of PCI devices this driver supports
@@ -46,6 +49,8 @@ static const struct eth_dev_ops enetc_ops = {
 	.dev_stop             = enetc_dev_stop,
 	.dev_close            = enetc_dev_close,
 	.link_update          = enetc_link_update,
+	.stats_get            = enetc_stats_get,
+	.stats_reset          = enetc_stats_reset,
 	.dev_infos_get        = enetc_dev_infos_get,
 	.rx_queue_setup       = enetc_rx_queue_setup,
 	.rx_queue_release     = enetc_rx_queue_release,
@@ -608,6 +613,42 @@ enetc_rx_queue_release(void *rxq)
 	rte_free(rx_ring);
 }
 
+static
+int enetc_stats_get(struct rte_eth_dev *dev,
+		    struct rte_eth_stats *stats)
+{
+	struct enetc_eth_hw *hw =
+		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct enetc_hw *enetc_hw = &hw->hw;
+
+	/* Total received packets, bad + good, if we want to get counters of
+	 * only good received packets then use ENETC_PM0_RFRM,
+	 * ENETC_PM0_TFRM registers.
+	 */
+	stats->ipackets = enetc_port_rd(enetc_hw, ENETC_PM0_RPKT);
+	stats->opackets = enetc_port_rd(enetc_hw, ENETC_PM0_TPKT);
+	stats->ibytes =  enetc_port_rd(enetc_hw, ENETC_PM0_REOCT);
+	stats->obytes = enetc_port_rd(enetc_hw, ENETC_PM0_TEOCT);
+	/* Dropped + Truncated packets, use ENETC_PM0_RDRNTP for without
+	 * truncated packets
+	 */
+	stats->imissed = enetc_port_rd(enetc_hw, ENETC_PM0_RDRP);
+	stats->ierrors = enetc_port_rd(enetc_hw, ENETC_PM0_RERR);
+	stats->oerrors = enetc_port_rd(enetc_hw, ENETC_PM0_TERR);
+
+	return 0;
+}
+
+static void
+enetc_stats_reset(struct rte_eth_dev *dev)
+{
+	struct enetc_eth_hw *hw =
+		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct enetc_hw *enetc_hw = &hw->hw;
+
+	enetc_port_wr(enetc_hw, ENETC_PM0_STAT_CONFIG, ENETC_CLEAR_STATS);
+}
+
 static int
 enetc_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 			   struct rte_pci_device *pci_dev)
-- 
2.19.1