[dpdk-dev] [PATCH v4 12/62] net/cnxk: support common dev infos get

[Nithin Dabilpuram <ndabilpuram@marvell.com>]

Add support to retrieve dev infos get for CN9K and CN10K.

Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---
 doc/guides/nics/cnxk.rst              |  3 ++
 doc/guides/nics/features/cnxk.ini     |  4 ++
 doc/guides/nics/features/cnxk_vec.ini |  4 ++
 doc/guides/nics/features/cnxk_vf.ini  |  3 ++
 drivers/net/cnxk/cnxk_ethdev.c        |  4 +-
 drivers/net/cnxk/cnxk_ethdev.h        | 33 ++++++++++++++++
 drivers/net/cnxk/cnxk_ethdev_ops.c    | 71 +++++++++++++++++++++++++++++++++++
 drivers/net/cnxk/meson.build          |  1 +
 8 files changed, 122 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/cnxk/cnxk_ethdev_ops.c

diff --git a/doc/guides/nics/cnxk.rst b/doc/guides/nics/cnxk.rst
index 6652e17..6bd410b 100644
--- a/doc/guides/nics/cnxk.rst
+++ b/doc/guides/nics/cnxk.rst
@@ -16,6 +16,9 @@ Features
 
 Features of the CNXK Ethdev PMD are:
 
+- SR-IOV VF
+- Lock-free Tx queue
+
 Prerequisites
 -------------
 
diff --git a/doc/guides/nics/features/cnxk.ini b/doc/guides/nics/features/cnxk.ini
index 2c23464..b426340 100644
--- a/doc/guides/nics/features/cnxk.ini
+++ b/doc/guides/nics/features/cnxk.ini
@@ -4,6 +4,10 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+Speed capabilities   = Y
+Lock-free Tx queue   = Y
+SR-IOV               = Y
+Multiprocess aware   = Y
 Linux                = Y
 ARMv8                = Y
 Usage doc            = Y
diff --git a/doc/guides/nics/features/cnxk_vec.ini b/doc/guides/nics/features/cnxk_vec.ini
index de78516..292ac1e 100644
--- a/doc/guides/nics/features/cnxk_vec.ini
+++ b/doc/guides/nics/features/cnxk_vec.ini
@@ -4,6 +4,10 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+Speed capabilities   = Y
+Lock-free Tx queue   = Y
+SR-IOV               = Y
+Multiprocess aware   = Y
 Linux                = Y
 ARMv8                = Y
 Usage doc            = Y
diff --git a/doc/guides/nics/features/cnxk_vf.ini b/doc/guides/nics/features/cnxk_vf.ini
index 9c96351..bc2eb8a 100644
--- a/doc/guides/nics/features/cnxk_vf.ini
+++ b/doc/guides/nics/features/cnxk_vf.ini
@@ -4,6 +4,9 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+Speed capabilities   = Y
+Lock-free Tx queue   = Y
+Multiprocess aware   = Y
 Linux                = Y
 ARMv8                = Y
 Usage doc            = Y
diff --git a/drivers/net/cnxk/cnxk_ethdev.c b/drivers/net/cnxk/cnxk_ethdev.c
index 109fd35..066e01c 100644
--- a/drivers/net/cnxk/cnxk_ethdev.c
+++ b/drivers/net/cnxk/cnxk_ethdev.c
@@ -38,7 +38,9 @@ nix_get_speed_capa(struct cnxk_eth_dev *dev)
 }
 
 /* CNXK platform independent eth dev ops */
-struct eth_dev_ops cnxk_eth_dev_ops;
+struct eth_dev_ops cnxk_eth_dev_ops = {
+	.dev_infos_get = cnxk_nix_info_get,
+};
 
 static int
 cnxk_eth_dev_init(struct rte_eth_dev *eth_dev)
diff --git a/drivers/net/cnxk/cnxk_ethdev.h b/drivers/net/cnxk/cnxk_ethdev.h
index 97e3a15..8d9a7e0 100644
--- a/drivers/net/cnxk/cnxk_ethdev.h
+++ b/drivers/net/cnxk/cnxk_ethdev.h
@@ -15,9 +15,40 @@
 
 #define CNXK_ETH_DEV_PMD_VERSION "1.0"
 
+/* VLAN tag inserted by NIX_TX_VTAG_ACTION.
+ * In Tx space is always reserved for this in FRS.
+ */
+#define CNXK_NIX_MAX_VTAG_INS	   2
+#define CNXK_NIX_MAX_VTAG_ACT_SIZE (4 * CNXK_NIX_MAX_VTAG_INS)
+
+/* ETH_HLEN+ETH_FCS+2*VLAN_HLEN */
+#define CNXK_NIX_L2_OVERHEAD (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + 8)
+
+#define CNXK_NIX_RX_MIN_DESC	    16
+#define CNXK_NIX_RX_MIN_DESC_ALIGN  16
+#define CNXK_NIX_RX_NB_SEG_MAX	    6
+#define CNXK_NIX_RX_DEFAULT_RING_SZ 4096
 /* Max supported SQB count */
 #define CNXK_NIX_TX_MAX_SQB 512
 
+/* If PTP is enabled additional SEND MEM DESC is required which
+ * takes 2 words, hence max 7 iova address are possible
+ */
+#if defined(RTE_LIBRTE_IEEE1588)
+#define CNXK_NIX_TX_NB_SEG_MAX 7
+#else
+#define CNXK_NIX_TX_NB_SEG_MAX 9
+#endif
+
+#define CNXK_NIX_RSS_L3_L4_SRC_DST                                             \
+	(ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY | ETH_RSS_L4_SRC_ONLY |     \
+	 ETH_RSS_L4_DST_ONLY)
+
+#define CNXK_NIX_RSS_OFFLOAD                                                   \
+	(ETH_RSS_PORT | ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP |               \
+	 ETH_RSS_SCTP | ETH_RSS_TUNNEL | ETH_RSS_L2_PAYLOAD |                  \
+	 CNXK_NIX_RSS_L3_L4_SRC_DST | ETH_RSS_LEVEL_MASK | ETH_RSS_C_VLAN)
+
 #define CNXK_NIX_TX_OFFLOAD_CAPA                                               \
 	(DEV_TX_OFFLOAD_MBUF_FAST_FREE | DEV_TX_OFFLOAD_MT_LOCKFREE |          \
 	 DEV_TX_OFFLOAD_VLAN_INSERT | DEV_TX_OFFLOAD_QINQ_INSERT |             \
@@ -77,6 +108,8 @@ extern struct eth_dev_ops cnxk_eth_dev_ops;
 int cnxk_nix_probe(struct rte_pci_driver *pci_drv,
 		   struct rte_pci_device *pci_dev);
 int cnxk_nix_remove(struct rte_pci_device *pci_dev);
+int cnxk_nix_info_get(struct rte_eth_dev *eth_dev,
+		      struct rte_eth_dev_info *dev_info);
 
 /* Devargs */
 int cnxk_ethdev_parse_devargs(struct rte_devargs *devargs,
diff --git a/drivers/net/cnxk/cnxk_ethdev_ops.c b/drivers/net/cnxk/cnxk_ethdev_ops.c
new file mode 100644
index 0000000..4a45956
--- /dev/null
+++ b/drivers/net/cnxk/cnxk_ethdev_ops.c
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2021 Marvell.
+ */
+
+#include <cnxk_ethdev.h>
+
+int
+cnxk_nix_info_get(struct rte_eth_dev *eth_dev, struct rte_eth_dev_info *devinfo)
+{
+	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
+	struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
+	int max_rx_pktlen;
+
+	max_rx_pktlen = (roc_nix_max_pkt_len(&dev->nix) + RTE_ETHER_CRC_LEN -
+			 CNXK_NIX_MAX_VTAG_ACT_SIZE);
+
+	devinfo->min_rx_bufsize = NIX_MIN_HW_FRS + RTE_ETHER_CRC_LEN;
+	devinfo->max_rx_pktlen = max_rx_pktlen;
+	devinfo->max_rx_queues = RTE_MAX_QUEUES_PER_PORT;
+	devinfo->max_tx_queues = RTE_MAX_QUEUES_PER_PORT;
+	devinfo->max_mac_addrs = dev->max_mac_entries;
+	devinfo->max_vfs = pci_dev->max_vfs;
+	devinfo->max_mtu = devinfo->max_rx_pktlen - CNXK_NIX_L2_OVERHEAD;
+	devinfo->min_mtu = devinfo->min_rx_bufsize - CNXK_NIX_L2_OVERHEAD;
+
+	devinfo->rx_offload_capa = dev->rx_offload_capa;
+	devinfo->tx_offload_capa = dev->tx_offload_capa;
+	devinfo->rx_queue_offload_capa = 0;
+	devinfo->tx_queue_offload_capa = 0;
+
+	devinfo->reta_size = dev->nix.reta_sz;
+	devinfo->hash_key_size = ROC_NIX_RSS_KEY_LEN;
+	devinfo->flow_type_rss_offloads = CNXK_NIX_RSS_OFFLOAD;
+
+	devinfo->default_rxconf = (struct rte_eth_rxconf){
+		.rx_drop_en = 0,
+		.offloads = 0,
+	};
+
+	devinfo->default_txconf = (struct rte_eth_txconf){
+		.offloads = 0,
+	};
+
+	devinfo->default_rxportconf = (struct rte_eth_dev_portconf){
+		.ring_size = CNXK_NIX_RX_DEFAULT_RING_SZ,
+	};
+
+	devinfo->rx_desc_lim = (struct rte_eth_desc_lim){
+		.nb_max = UINT16_MAX,
+		.nb_min = CNXK_NIX_RX_MIN_DESC,
+		.nb_align = CNXK_NIX_RX_MIN_DESC_ALIGN,
+		.nb_seg_max = CNXK_NIX_RX_NB_SEG_MAX,
+		.nb_mtu_seg_max = CNXK_NIX_RX_NB_SEG_MAX,
+	};
+	devinfo->rx_desc_lim.nb_max =
+		RTE_ALIGN_MUL_FLOOR(devinfo->rx_desc_lim.nb_max,
+				    CNXK_NIX_RX_MIN_DESC_ALIGN);
+
+	devinfo->tx_desc_lim = (struct rte_eth_desc_lim){
+		.nb_max = UINT16_MAX,
+		.nb_min = 1,
+		.nb_align = 1,
+		.nb_seg_max = CNXK_NIX_TX_NB_SEG_MAX,
+		.nb_mtu_seg_max = CNXK_NIX_TX_NB_SEG_MAX,
+	};
+
+	devinfo->speed_capa = dev->speed_capa;
+	devinfo->dev_capa = RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP |
+			    RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP;
+	return 0;
+}
diff --git a/drivers/net/cnxk/meson.build b/drivers/net/cnxk/meson.build
index e7e43f0..8495732 100644
--- a/drivers/net/cnxk/meson.build
+++ b/drivers/net/cnxk/meson.build
@@ -9,6 +9,7 @@ if not dpdk_conf.get('RTE_ARCH_64')
 endif
 
 sources = files('cnxk_ethdev.c',
+		'cnxk_ethdev_ops.c',
 		'cnxk_ethdev_devargs.c')
 
 # CN9K
-- 
2.8.4