[dpdk-dev,01/13] cxgbe: add skeleton VF driver

diff --git a/doc/guides/nics/features/cxgbevf.ini b/doc/guides/nics/features/cxgbevf.ini
new file mode 100644
index 000000000..7706106d1
--- /dev/null
+++ b/doc/guides/nics/features/cxgbevf.ini
@@ -0,0 +1,28 @@ 
+;
+; Supported features of the 'cxgbevf' network poll mode driver.
+;
+; Refer to default.ini for the full list of available PMD features.
+;
+[Features]
+Speed capabilities   = Y
+Link status          = Y
+Queue start/stop     = Y
+MTU update           = Y
+Jumbo frame          = Y
+Scattered Rx         = Y
+TSO                  = Y
+Promiscuous mode     = Y
+Allmulticast mode    = Y
+RSS hash             = Y
+CRC offload          = Y
+VLAN offload         = Y
+L3 checksum offload  = Y
+L4 checksum offload  = Y
+Packet type parsing  = Y
+Basic stats          = Y
+Stats per queue      = Y
+Multiprocess aware   = Y
+Linux UIO            = Y
+Linux VFIO           = Y
+x86-32               = Y
+x86-64               = Y
diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst
index f2525bbd9..93ee69249 100644
--- a/doc/guides/rel_notes/release_18_05.rst
+++ b/doc/guides/rel_notes/release_18_05.rst
@@ -45,6 +45,11 @@  New Features
 
   Support to update RSS hash and key has been added to CXGBE PMD.
 
+* **Added CXGBE VF PMD.**
+
+  CXGBE VF Poll Mode Driver has been added to run DPDK over Chelsio
+  T5/T6 NIC VF instances.
+
 * **Updated Solarflare network PMD.**
 
   Updated the sfc_efx driver including the following changes:
diff --git a/drivers/net/cxgbe/Makefile b/drivers/net/cxgbe/Makefile
index 65df14253..397977e02 100644
--- a/drivers/net/cxgbe/Makefile
+++ b/drivers/net/cxgbe/Makefile
@@ -80,6 +80,7 @@  VPATH += $(SRCDIR)/base
 # all source are stored in SRCS-y
 #
 SRCS-$(CONFIG_RTE_LIBRTE_CXGBE_PMD) += cxgbe_ethdev.c
+SRCS-$(CONFIG_RTE_LIBRTE_CXGBE_PMD) += cxgbevf_ethdev.c
 SRCS-$(CONFIG_RTE_LIBRTE_CXGBE_PMD) += cxgbe_main.c
 SRCS-$(CONFIG_RTE_LIBRTE_CXGBE_PMD) += sge.c
 SRCS-$(CONFIG_RTE_LIBRTE_CXGBE_PMD) += t4_hw.c
diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
index 781d75cc2..7f523265d 100644
--- a/drivers/net/cxgbe/cxgbe_ethdev.c
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -63,6 +63,7 @@ 
 #include <rte_dev.h>
 
 #include "cxgbe.h"
+#include "cxgbe_pfvf.h"
 
 /*
  * Macros needed to support the PCI Device ID Table ...
@@ -135,8 +136,8 @@  static uint16_t cxgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 	return work_done;
 }
 
-static void cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
-			       struct rte_eth_dev_info *device_info)
+void cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
+			struct rte_eth_dev_info *device_info)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -178,7 +179,7 @@  static void cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
 	cxgbe_get_speed_caps(pi, &device_info->speed_capa);
 }
 
-static void cxgbe_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
+void cxgbe_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -187,7 +188,7 @@  static void cxgbe_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 		      1, -1, 1, -1, false);
 }
 
-static void cxgbe_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
+void cxgbe_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -196,7 +197,7 @@  static void cxgbe_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 		      0, -1, 1, -1, false);
 }
 
-static void cxgbe_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
+void cxgbe_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -207,7 +208,7 @@  static void cxgbe_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
 		      -1, 1, 1, -1, false);
 }
 
-static void cxgbe_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
+void cxgbe_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -218,8 +219,8 @@  static void cxgbe_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
 		      -1, 0, 1, -1, false);
 }
 
-static int cxgbe_dev_link_update(struct rte_eth_dev *eth_dev,
-				 __rte_unused int wait_to_complete)
+int cxgbe_dev_link_update(struct rte_eth_dev *eth_dev,
+			  __rte_unused int wait_to_complete)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -239,7 +240,7 @@  static int cxgbe_dev_link_update(struct rte_eth_dev *eth_dev,
 	return 0;
 }
 
-static int cxgbe_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
+int cxgbe_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -267,17 +268,10 @@  static int cxgbe_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 	return err;
 }
 
-static int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
-				    uint16_t tx_queue_id);
-static int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
-				    uint16_t tx_queue_id);
-static void cxgbe_dev_tx_queue_release(void *q);
-static void cxgbe_dev_rx_queue_release(void *q);
-
 /*
  * Stop device.
  */
-static void cxgbe_dev_close(struct rte_eth_dev *eth_dev)
+void cxgbe_dev_close(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -316,7 +310,7 @@  static void cxgbe_dev_close(struct rte_eth_dev *eth_dev)
 /* Start the device.
  * It returns 0 on success.
  */
-static int cxgbe_dev_start(struct rte_eth_dev *eth_dev)
+int cxgbe_dev_start(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -368,7 +362,7 @@  static int cxgbe_dev_start(struct rte_eth_dev *eth_dev)
 /*
  * Stop device: disable rx and tx functions to allow for reconfiguring.
  */
-static void cxgbe_dev_stop(struct rte_eth_dev *eth_dev)
+void cxgbe_dev_stop(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -387,7 +381,7 @@  static void cxgbe_dev_stop(struct rte_eth_dev *eth_dev)
 	t4_sge_eth_clear_queues(pi);
 }
 
-static int cxgbe_dev_configure(struct rte_eth_dev *eth_dev)
+int cxgbe_dev_configure(struct rte_eth_dev *eth_dev)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -409,8 +403,7 @@  static int cxgbe_dev_configure(struct rte_eth_dev *eth_dev)
 	return 0;
 }
 
-static int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
-				    uint16_t tx_queue_id)
+int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id)
 {
 	int ret;
 	struct sge_eth_txq *txq = (struct sge_eth_txq *)
@@ -425,8 +418,7 @@  static int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 	return ret;
 }
 
-static int cxgbe_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
-				   uint16_t tx_queue_id)
+int cxgbe_dev_tx_queue_stop(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id)
 {
 	int ret;
 	struct sge_eth_txq *txq = (struct sge_eth_txq *)
@@ -441,10 +433,10 @@  static int cxgbe_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
 	return ret;
 }
 
-static int cxgbe_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
-				    uint16_t queue_idx,	uint16_t nb_desc,
-				    unsigned int socket_id,
-				    const struct rte_eth_txconf *tx_conf)
+int cxgbe_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
+			     uint16_t queue_idx, uint16_t nb_desc,
+			     unsigned int socket_id,
+			     const struct rte_eth_txconf *tx_conf)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -495,7 +487,7 @@  static int cxgbe_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 	return err;
 }
 
-static void cxgbe_dev_tx_queue_release(void *q)
+void cxgbe_dev_tx_queue_release(void *q)
 {
 	struct sge_eth_txq *txq = (struct sge_eth_txq *)q;
 
@@ -511,8 +503,7 @@  static void cxgbe_dev_tx_queue_release(void *q)
 	}
 }
 
-static int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
-				    uint16_t rx_queue_id)
+int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev, uint16_t rx_queue_id)
 {
 	int ret;
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
@@ -531,8 +522,7 @@  static int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 	return ret;
 }
 
-static int cxgbe_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
-				   uint16_t rx_queue_id)
+int cxgbe_dev_rx_queue_stop(struct rte_eth_dev *eth_dev, uint16_t rx_queue_id)
 {
 	int ret;
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
@@ -550,11 +540,11 @@  static int cxgbe_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
 	return ret;
 }
 
-static int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
-				    uint16_t queue_idx,	uint16_t nb_desc,
-				    unsigned int socket_id,
-				    const struct rte_eth_rxconf *rx_conf,
-				    struct rte_mempool *mp)
+int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
+			     uint16_t queue_idx, uint16_t nb_desc,
+			     unsigned int socket_id,
+			     const struct rte_eth_rxconf *rx_conf,
+			     struct rte_mempool *mp)
 {
 	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
 	struct adapter *adapter = pi->adapter;
@@ -628,7 +618,7 @@  static int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 	return err;
 }
 
-static void cxgbe_dev_rx_queue_release(void *q)
+void cxgbe_dev_rx_queue_release(void *q)
 {
 	struct sge_eth_rxq *rxq = (struct sge_eth_rxq *)q;
 	struct sge_rspq *rq = &rxq->rspq;
@@ -774,7 +764,7 @@  static int cxgbe_flow_ctrl_set(struct rte_eth_dev *eth_dev,
 			     &pi->link_cfg);
 }
 
-static const uint32_t *
+const uint32_t *
 cxgbe_dev_supported_ptypes_get(struct rte_eth_dev *eth_dev)
 {
 	static const uint32_t ptypes[] = {
diff --git a/drivers/net/cxgbe/cxgbe_pfvf.h b/drivers/net/cxgbe/cxgbe_pfvf.h
new file mode 100644
index 000000000..e3d8533ca
--- /dev/null
+++ b/drivers/net/cxgbe/cxgbe_pfvf.h
@@ -0,0 +1,38 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Chelsio Communications.
+ * All rights reserved.
+ */
+
+#ifndef _CXGBE_PFVF_H_
+#define _CXGBE_PFVF_H_
+
+void cxgbe_dev_rx_queue_release(void *q);
+void cxgbe_dev_tx_queue_release(void *q);
+void cxgbe_dev_stop(struct rte_eth_dev *eth_dev);
+void cxgbe_dev_close(struct rte_eth_dev *eth_dev);
+void cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
+			struct rte_eth_dev_info *device_info);
+void cxgbe_dev_promiscuous_enable(struct rte_eth_dev *eth_dev);
+void cxgbe_dev_promiscuous_disable(struct rte_eth_dev *eth_dev);
+void cxgbe_dev_allmulticast_enable(struct rte_eth_dev *eth_dev);
+void cxgbe_dev_allmulticast_disable(struct rte_eth_dev *eth_dev);
+int cxgbe_dev_configure(struct rte_eth_dev *eth_dev);
+int cxgbe_dev_tx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t queue_idx,
+			     uint16_t nb_desc, unsigned int socket_id,
+			     const struct rte_eth_txconf *tx_conf);
+int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t queue_idx,
+			     uint16_t nb_desc, unsigned int socket_id,
+			     const struct rte_eth_rxconf *rx_conf,
+			     struct rte_mempool *mp);
+int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
+			     uint16_t tx_queue_id);
+int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
+			     uint16_t tx_queue_id);
+int cxgbe_dev_tx_queue_stop(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id);
+int cxgbe_dev_rx_queue_stop(struct rte_eth_dev *eth_dev, uint16_t rx_queue_id);
+int cxgbe_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu);
+int cxgbe_dev_start(struct rte_eth_dev *eth_dev);
+int cxgbe_dev_link_update(struct rte_eth_dev *eth_dev,
+			  int wait_to_complete);
+const uint32_t *cxgbe_dev_supported_ptypes_get(struct rte_eth_dev *eth_dev);
+#endif /* _CXGBE_PFVF_H_ */
diff --git a/drivers/net/cxgbe/cxgbevf_ethdev.c b/drivers/net/cxgbe/cxgbevf_ethdev.c
new file mode 100644
index 000000000..7d5b8c07f
--- /dev/null
+++ b/drivers/net/cxgbe/cxgbevf_ethdev.c
@@ -0,0 +1,91 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Chelsio Communications.
+ * All rights reserved.
+ */
+
+#include <rte_ethdev_driver.h>
+#include <rte_ethdev_pci.h>
+
+#include "cxgbe.h"
+#include "cxgbe_pfvf.h"
+
+/*
+ * Macros needed to support the PCI Device ID Table ...
+ */
+#define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \
+	static const struct rte_pci_id cxgb4vf_pci_tbl[] = {
+#define CH_PCI_DEVICE_ID_FUNCTION 0x8
+
+#define PCI_VENDOR_ID_CHELSIO 0x1425
+
+#define CH_PCI_ID_TABLE_ENTRY(devid) \
+		{ RTE_PCI_DEVICE(PCI_VENDOR_ID_CHELSIO, (devid)) }
+
+#define CH_PCI_DEVICE_ID_TABLE_DEFINE_END \
+		{ .vendor_id = 0, } \
+	}
+
+/*
+ *... and the PCI ID Table itself ...
+ */
+#include "t4_pci_id_tbl.h"
+
+static const struct eth_dev_ops cxgbevf_eth_dev_ops = {
+	.dev_start              = cxgbe_dev_start,
+	.dev_stop               = cxgbe_dev_stop,
+	.dev_close              = cxgbe_dev_close,
+	.promiscuous_enable     = cxgbe_dev_promiscuous_enable,
+	.promiscuous_disable    = cxgbe_dev_promiscuous_disable,
+	.allmulticast_enable    = cxgbe_dev_allmulticast_enable,
+	.allmulticast_disable   = cxgbe_dev_allmulticast_disable,
+	.dev_configure          = cxgbe_dev_configure,
+	.dev_infos_get          = cxgbe_dev_info_get,
+	.dev_supported_ptypes_get = cxgbe_dev_supported_ptypes_get,
+	.link_update            = cxgbe_dev_link_update,
+	.mtu_set                = cxgbe_dev_mtu_set,
+	.tx_queue_setup         = cxgbe_dev_tx_queue_setup,
+	.tx_queue_start         = cxgbe_dev_tx_queue_start,
+	.tx_queue_stop          = cxgbe_dev_tx_queue_stop,
+	.tx_queue_release       = cxgbe_dev_tx_queue_release,
+	.rx_queue_setup         = cxgbe_dev_rx_queue_setup,
+	.rx_queue_start         = cxgbe_dev_rx_queue_start,
+	.rx_queue_stop          = cxgbe_dev_rx_queue_stop,
+	.rx_queue_release       = cxgbe_dev_rx_queue_release,
+};
+
+/*
+ * Initialize driver
+ * It returns 0 on success.
+ */
+static int eth_cxgbevf_dev_init(struct rte_eth_dev *eth_dev)
+{
+	CXGBE_FUNC_TRACE();
+
+	eth_dev->dev_ops = &cxgbevf_eth_dev_ops;
+
+	/* XXX: Do probe */
+	return -EIO;
+}
+
+static int eth_cxgbevf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+				 struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct port_info),
+					     eth_cxgbevf_dev_init);
+}
+
+static int eth_cxgbevf_pci_remove(struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_remove(pci_dev, NULL);
+}
+
+static struct rte_pci_driver rte_cxgbevf_pmd = {
+	.id_table = cxgb4vf_pci_tbl,
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING,
+	.probe = eth_cxgbevf_pci_probe,
+	.remove = eth_cxgbevf_pci_remove,
+};
+
+RTE_PMD_REGISTER_PCI(net_cxgbevf, rte_cxgbevf_pmd);
+RTE_PMD_REGISTER_PCI_TABLE(net_cxgbevf, cxgb4vf_pci_tbl);
+RTE_PMD_REGISTER_KMOD_DEP(net_cxgbevf, "* igb_uio | vfio-pci");