Imported upstream release 16.04

* gbp import-orig ../dpdk-16.04.tar.xz

Change-Id: Iac2196db782ba322f6974d8a752acc34ce5024c3
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 898 insertions, 0 deletions

diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
new file mode 100644
index 00000000..bb134e50
--- /dev/null
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -0,0 +1,898 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2014-2016 Chelsio Communications.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Chelsio Communications nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/queue.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <netinet/in.h>
+
+#include <rte_byteorder.h>
+#include <rte_common.h>
+#include <rte_cycles.h>
+#include <rte_interrupts.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_pci.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_tailq.h>
+#include <rte_eal.h>
+#include <rte_alarm.h>
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_atomic.h>
+#include <rte_malloc.h>
+#include <rte_random.h>
+#include <rte_dev.h>
+
+#include "cxgbe.h"
+
+/*
+ * Macros needed to support the PCI Device ID Table ...
+ */
+#define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \
+	static struct rte_pci_id cxgb4_pci_tbl[] = {
+#define CH_PCI_DEVICE_ID_FUNCTION 0x4
+
+#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 uint16_t cxgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
+				uint16_t nb_pkts)
+{
+	struct sge_eth_txq *txq = (struct sge_eth_txq *)tx_queue;
+	uint16_t pkts_sent, pkts_remain;
+	uint16_t total_sent = 0;
+	int ret = 0;
+
+	CXGBE_DEBUG_TX(adapter, "%s: txq = %p; tx_pkts = %p; nb_pkts = %d\n",
+		       __func__, txq, tx_pkts, nb_pkts);
+
+	t4_os_lock(&txq->txq_lock);
+	/* free up desc from already completed tx */
+	reclaim_completed_tx(&txq->q);
+	while (total_sent < nb_pkts) {
+		pkts_remain = nb_pkts - total_sent;
+
+		for (pkts_sent = 0; pkts_sent < pkts_remain; pkts_sent++) {
+			ret = t4_eth_xmit(txq, tx_pkts[total_sent + pkts_sent]);
+			if (ret < 0)
+				break;
+		}
+		if (!pkts_sent)
+			break;
+		total_sent += pkts_sent;
+		/* reclaim as much as possible */
+		reclaim_completed_tx(&txq->q);
+	}
+
+	t4_os_unlock(&txq->txq_lock);
+	return total_sent;
+}
+
+static uint16_t cxgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
+				uint16_t nb_pkts)
+{
+	struct sge_eth_rxq *rxq = (struct sge_eth_rxq *)rx_queue;
+	unsigned int work_done;
+
+	CXGBE_DEBUG_RX(adapter, "%s: rxq->rspq.cntxt_id = %u; nb_pkts = %d\n",
+		       __func__, rxq->rspq.cntxt_id, nb_pkts);
+
+	if (cxgbe_poll(&rxq->rspq, rx_pkts, (unsigned int)nb_pkts, &work_done))
+		dev_err(adapter, "error in cxgbe poll\n");
+
+	CXGBE_DEBUG_RX(adapter, "%s: work_done = %u\n", __func__, work_done);
+	return work_done;
+}
+
+static 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;
+	int max_queues = adapter->sge.max_ethqsets / adapter->params.nports;
+
+	static const struct rte_eth_desc_lim cxgbe_desc_lim = {
+		.nb_max = CXGBE_MAX_RING_DESC_SIZE,
+		.nb_min = CXGBE_MIN_RING_DESC_SIZE,
+		.nb_align = 1,
+	};
+
+	device_info->min_rx_bufsize = CXGBE_MIN_RX_BUFSIZE;
+	device_info->max_rx_pktlen = CXGBE_MAX_RX_PKTLEN;
+	device_info->max_rx_queues = max_queues;
+	device_info->max_tx_queues = max_queues;
+	device_info->max_mac_addrs = 1;
+	/* XXX: For now we support one MAC/port */
+	device_info->max_vfs = adapter->params.arch.vfcount;
+	device_info->max_vmdq_pools = 0; /* XXX: For now no support for VMDQ */
+
+	device_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP |
+				       DEV_RX_OFFLOAD_IPV4_CKSUM |
+				       DEV_RX_OFFLOAD_UDP_CKSUM |
+				       DEV_RX_OFFLOAD_TCP_CKSUM;
+
+	device_info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT |
+				       DEV_TX_OFFLOAD_IPV4_CKSUM |
+				       DEV_TX_OFFLOAD_UDP_CKSUM |
+				       DEV_TX_OFFLOAD_TCP_CKSUM |
+				       DEV_TX_OFFLOAD_TCP_TSO;
+
+	device_info->reta_size = pi->rss_size;
+
+	device_info->rx_desc_lim = cxgbe_desc_lim;
+	device_info->tx_desc_lim = cxgbe_desc_lim;
+	device_info->speed_capa = ETH_LINK_SPEED_10G | ETH_LINK_SPEED_40G;
+}
+
+static 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;
+
+	t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
+		      1, -1, 1, -1, false);
+}
+
+static 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;
+
+	t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
+		      0, -1, 1, -1, false);
+}
+
+static 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;
+
+	/* TODO: address filters ?? */
+
+	t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
+		      -1, 1, 1, -1, false);
+}
+
+static 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;
+
+	/* TODO: address filters ?? */
+
+	t4_set_rxmode(adapter, adapter->mbox, pi->viid, -1,
+		      -1, 0, 1, -1, false);
+}
+
+static 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;
+	struct sge *s = &adapter->sge;
+	struct rte_eth_link *old_link = &eth_dev->data->dev_link;
+	unsigned int work_done, budget = 4;
+
+	cxgbe_poll(&s->fw_evtq, NULL, budget, &work_done);
+	if (old_link->link_status == pi->link_cfg.link_ok)
+		return -1;  /* link not changed */
+
+	eth_dev->data->dev_link.link_status = pi->link_cfg.link_ok;
+	eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
+	eth_dev->data->dev_link.link_speed = pi->link_cfg.speed;
+
+	/* link has changed */
+	return 0;
+}
+
+static 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;
+	struct rte_eth_dev_info dev_info;
+	int err;
+	uint16_t new_mtu = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+
+	cxgbe_dev_info_get(eth_dev, &dev_info);
+
+	/* Must accommodate at least ETHER_MIN_MTU */
+	if ((new_mtu < ETHER_MIN_MTU) || (new_mtu > dev_info.max_rx_pktlen))
+		return -EINVAL;
+
+	/* set to jumbo mode if needed */
+	if (new_mtu > ETHER_MAX_LEN)
+		eth_dev->data->dev_conf.rxmode.jumbo_frame = 1;
+	else
+		eth_dev->data->dev_conf.rxmode.jumbo_frame = 0;
+
+	err = t4_set_rxmode(adapter, adapter->mbox, pi->viid, new_mtu, -1, -1,
+			    -1, -1, true);
+	if (!err)
+		eth_dev->data->dev_conf.rxmode.max_rx_pkt_len = new_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)
+{
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct adapter *adapter = pi->adapter;
+	int i, dev_down = 0;
+
+	CXGBE_FUNC_TRACE();
+
+	if (!(adapter->flags & FULL_INIT_DONE))
+		return;
+
+	cxgbe_down(pi);
+
+	/*
+	 *  We clear queues only if both tx and rx path of the port
+	 *  have been disabled
+	 */
+	t4_sge_eth_clear_queues(pi);
+
+	/*  See if all ports are down */
+	for_each_port(adapter, i) {
+		pi = adap2pinfo(adapter, i);
+		/*
+		 * Skip first port of the adapter since it will be closed
+		 * by DPDK
+		 */
+		if (i == 0)
+			continue;
+		dev_down += (pi->eth_dev->data->dev_started == 0) ? 1 : 0;
+	}
+
+	/* If rest of the ports are stopped, then free up resources */
+	if (dev_down == (adapter->params.nports - 1))
+		cxgbe_close(adapter);
+}
+
+/* Start the device.
+ * It returns 0 on success.
+ */
+static 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;
+	int err = 0, i;
+
+	CXGBE_FUNC_TRACE();
+
+	/*
+	 * If we don't have a connection to the firmware there's nothing we
+	 * can do.
+	 */
+	if (!(adapter->flags & FW_OK)) {
+		err = -ENXIO;
+		goto out;
+	}
+
+	if (!(adapter->flags & FULL_INIT_DONE)) {
+		err = cxgbe_up(adapter);
+		if (err < 0)
+			goto out;
+	}
+
+	err = setup_rss(pi);
+	if (err)
+		goto out;
+
+	for (i = 0; i < pi->n_tx_qsets; i++) {
+		err = cxgbe_dev_tx_queue_start(eth_dev, i);
+		if (err)
+			goto out;
+	}
+
+	for (i = 0; i < pi->n_rx_qsets; i++) {
+		err = cxgbe_dev_rx_queue_start(eth_dev, i);
+		if (err)
+			goto out;
+	}
+
+	err = link_start(pi);
+	if (err)
+		goto out;
+
+out:
+	return err;
+}
+
+/*
+ * Stop device: disable rx and tx functions to allow for reconfiguring.
+ */
+static 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;
+
+	CXGBE_FUNC_TRACE();
+
+	if (!(adapter->flags & FULL_INIT_DONE))
+		return;
+
+	cxgbe_down(pi);
+
+	/*
+	 *  We clear queues only if both tx and rx path of the port
+	 *  have been disabled
+	 */
+	t4_sge_eth_clear_queues(pi);
+}
+
+static 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;
+	int err;
+
+	CXGBE_FUNC_TRACE();
+
+	if (!(adapter->flags & FW_QUEUE_BOUND)) {
+		err = setup_sge_fwevtq(adapter);
+		if (err)
+			return err;
+		adapter->flags |= FW_QUEUE_BOUND;
+	}
+
+	err = cfg_queue_count(eth_dev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static 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 *)
+				  (eth_dev->data->tx_queues[tx_queue_id]);
+
+	dev_debug(NULL, "%s: tx_queue_id = %d\n", __func__, tx_queue_id);
+
+	ret = t4_sge_eth_txq_start(txq);
+	if (ret == 0)
+		eth_dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
+
+	return ret;
+}
+
+static 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 *)
+				  (eth_dev->data->tx_queues[tx_queue_id]);
+
+	dev_debug(NULL, "%s: tx_queue_id = %d\n", __func__, tx_queue_id);
+
+	ret = t4_sge_eth_txq_stop(txq);
+	if (ret == 0)
+		eth_dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+	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)
+{
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct adapter *adapter = pi->adapter;
+	struct sge *s = &adapter->sge;
+	struct sge_eth_txq *txq = &s->ethtxq[pi->first_qset + queue_idx];
+	int err = 0;
+	unsigned int temp_nb_desc;
+
+	RTE_SET_USED(tx_conf);
+
+	dev_debug(adapter, "%s: eth_dev->data->nb_tx_queues = %d; queue_idx = %d; nb_desc = %d; socket_id = %d; pi->first_qset = %u\n",
+		  __func__, eth_dev->data->nb_tx_queues, queue_idx, nb_desc,
+		  socket_id, pi->first_qset);
+
+	/*  Free up the existing queue  */
+	if (eth_dev->data->tx_queues[queue_idx]) {
+		cxgbe_dev_tx_queue_release(eth_dev->data->tx_queues[queue_idx]);
+		eth_dev->data->tx_queues[queue_idx] = NULL;
+	}
+
+	eth_dev->data->tx_queues[queue_idx] = (void *)txq;
+
+	/* Sanity Checking
+	 *
+	 * nb_desc should be > 1023 and <= CXGBE_MAX_RING_DESC_SIZE
+	 */
+	temp_nb_desc = nb_desc;
+	if (nb_desc < CXGBE_MIN_RING_DESC_SIZE) {
+		dev_warn(adapter, "%s: number of descriptors must be >= %d. Using default [%d]\n",
+			 __func__, CXGBE_MIN_RING_DESC_SIZE,
+			 CXGBE_DEFAULT_TX_DESC_SIZE);
+		temp_nb_desc = CXGBE_DEFAULT_TX_DESC_SIZE;
+	} else if (nb_desc > CXGBE_MAX_RING_DESC_SIZE) {
+		dev_err(adapter, "%s: number of descriptors must be between %d and %d inclusive. Default [%d]\n",
+			__func__, CXGBE_MIN_RING_DESC_SIZE,
+			CXGBE_MAX_RING_DESC_SIZE, CXGBE_DEFAULT_TX_DESC_SIZE);
+		return -(EINVAL);
+	}
+
+	txq->q.size = temp_nb_desc;
+
+	err = t4_sge_alloc_eth_txq(adapter, txq, eth_dev, queue_idx,
+				   s->fw_evtq.cntxt_id, socket_id);
+
+	dev_debug(adapter, "%s: txq->q.cntxt_id= %d err = %d\n",
+		  __func__, txq->q.cntxt_id, err);
+
+	return err;
+}
+
+static void cxgbe_dev_tx_queue_release(void *q)
+{
+	struct sge_eth_txq *txq = (struct sge_eth_txq *)q;
+
+	if (txq) {
+		struct port_info *pi = (struct port_info *)
+				       (txq->eth_dev->data->dev_private);
+		struct adapter *adap = pi->adapter;
+
+		dev_debug(adapter, "%s: pi->port_id = %d; tx_queue_id = %d\n",
+			  __func__, pi->port_id, txq->q.cntxt_id);
+
+		t4_sge_eth_txq_release(adap, txq);
+	}
+}
+
+static 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);
+	struct adapter *adap = pi->adapter;
+	struct sge_rspq *q;
+
+	dev_debug(adapter, "%s: pi->port_id = %d; rx_queue_id = %d\n",
+		  __func__, pi->port_id, rx_queue_id);
+
+	q = eth_dev->data->rx_queues[rx_queue_id];
+
+	ret = t4_sge_eth_rxq_start(adap, q);
+	if (ret == 0)
+		eth_dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
+
+	return ret;
+}
+
+static 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);
+	struct adapter *adap = pi->adapter;
+	struct sge_rspq *q;
+
+	dev_debug(adapter, "%s: pi->port_id = %d; rx_queue_id = %d\n",
+		  __func__, pi->port_id, rx_queue_id);
+
+	q = eth_dev->data->rx_queues[rx_queue_id];
+	ret = t4_sge_eth_rxq_stop(adap, q);
+	if (ret == 0)
+		eth_dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+	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)
+{
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct adapter *adapter = pi->adapter;
+	struct sge *s = &adapter->sge;
+	struct sge_eth_rxq *rxq = &s->ethrxq[pi->first_qset + queue_idx];
+	int err = 0;
+	int msi_idx = 0;
+	unsigned int temp_nb_desc;
+	struct rte_eth_dev_info dev_info;
+	unsigned int pkt_len = eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
+
+	RTE_SET_USED(rx_conf);
+
+	dev_debug(adapter, "%s: eth_dev->data->nb_rx_queues = %d; queue_idx = %d; nb_desc = %d; socket_id = %d; mp = %p\n",
+		  __func__, eth_dev->data->nb_rx_queues, queue_idx, nb_desc,
+		  socket_id, mp);
+
+	cxgbe_dev_info_get(eth_dev, &dev_info);
+
+	/* Must accommodate at least ETHER_MIN_MTU */
+	if ((pkt_len < dev_info.min_rx_bufsize) ||
+	    (pkt_len > dev_info.max_rx_pktlen)) {
+		dev_err(adap, "%s: max pkt len must be > %d and <= %d\n",
+			__func__, dev_info.min_rx_bufsize,
+			dev_info.max_rx_pktlen);
+		return -EINVAL;
+	}
+
+	/*  Free up the existing queue  */
+	if (eth_dev->data->rx_queues[queue_idx]) {
+		cxgbe_dev_rx_queue_release(eth_dev->data->rx_queues[queue_idx]);
+		eth_dev->data->rx_queues[queue_idx] = NULL;
+	}
+
+	eth_dev->data->rx_queues[queue_idx] = (void *)rxq;
+
+	/* Sanity Checking
+	 *
+	 * nb_desc should be > 0 and <= CXGBE_MAX_RING_DESC_SIZE
+	 */
+	temp_nb_desc = nb_desc;
+	if (nb_desc < CXGBE_MIN_RING_DESC_SIZE) {
+		dev_warn(adapter, "%s: number of descriptors must be >= %d. Using default [%d]\n",
+			 __func__, CXGBE_MIN_RING_DESC_SIZE,
+			 CXGBE_DEFAULT_RX_DESC_SIZE);
+		temp_nb_desc = CXGBE_DEFAULT_RX_DESC_SIZE;
+	} else if (nb_desc > CXGBE_MAX_RING_DESC_SIZE) {
+		dev_err(adapter, "%s: number of descriptors must be between %d and %d inclusive. Default [%d]\n",
+			__func__, CXGBE_MIN_RING_DESC_SIZE,
+			CXGBE_MAX_RING_DESC_SIZE, CXGBE_DEFAULT_RX_DESC_SIZE);
+		return -(EINVAL);
+	}
+
+	rxq->rspq.size = temp_nb_desc;
+	if ((&rxq->fl) != NULL)
+		rxq->fl.size = temp_nb_desc;
+
+	/* Set to jumbo mode if necessary */
+	if (pkt_len > ETHER_MAX_LEN)
+		eth_dev->data->dev_conf.rxmode.jumbo_frame = 1;
+	else
+		eth_dev->data->dev_conf.rxmode.jumbo_frame = 0;
+
+	err = t4_sge_alloc_rxq(adapter, &rxq->rspq, false, eth_dev, msi_idx,
+			       &rxq->fl, t4_ethrx_handler,
+			       t4_get_mps_bg_map(adapter, pi->tx_chan), mp,
+			       queue_idx, socket_id);
+
+	dev_debug(adapter, "%s: err = %d; port_id = %d; cntxt_id = %u\n",
+		  __func__, err, pi->port_id, rxq->rspq.cntxt_id);
+	return err;
+}
+
+static void cxgbe_dev_rx_queue_release(void *q)
+{
+	struct sge_eth_rxq *rxq = (struct sge_eth_rxq *)q;
+	struct sge_rspq *rq = &rxq->rspq;
+
+	if (rq) {
+		struct port_info *pi = (struct port_info *)
+				       (rq->eth_dev->data->dev_private);
+		struct adapter *adap = pi->adapter;
+
+		dev_debug(adapter, "%s: pi->port_id = %d; rx_queue_id = %d\n",
+			  __func__, pi->port_id, rxq->rspq.cntxt_id);
+
+		t4_sge_eth_rxq_release(adap, rxq);
+	}
+}
+
+/*
+ * Get port statistics.
+ */
+static void cxgbe_dev_stats_get(struct rte_eth_dev *eth_dev,
+				struct rte_eth_stats *eth_stats)
+{
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct adapter *adapter = pi->adapter;
+	struct sge *s = &adapter->sge;
+	struct port_stats ps;
+	unsigned int i;
+
+	cxgbe_stats_get(pi, &ps);
+
+	/* RX Stats */
+	eth_stats->ipackets = ps.rx_frames;
+	eth_stats->ibytes   = ps.rx_octets;
+	eth_stats->imcasts  = ps.rx_mcast_frames;
+	eth_stats->imissed  = ps.rx_ovflow0 + ps.rx_ovflow1 +
+			      ps.rx_ovflow2 + ps.rx_ovflow3 +
+			      ps.rx_trunc0 + ps.rx_trunc1 +
+			      ps.rx_trunc2 + ps.rx_trunc3;
+	eth_stats->ierrors  = ps.rx_symbol_err + ps.rx_fcs_err +
+			      ps.rx_jabber + ps.rx_too_long + ps.rx_runt +
+			      ps.rx_len_err;
+
+	/* TX Stats */
+	eth_stats->opackets = ps.tx_frames;
+	eth_stats->obytes   = ps.tx_octets;
+	eth_stats->oerrors  = ps.tx_error_frames;
+
+	for (i = 0; i < pi->n_rx_qsets; i++) {
+		struct sge_eth_rxq *rxq =
+			&s->ethrxq[pi->first_qset + i];
+
+		eth_stats->q_ipackets[i] = rxq->stats.pkts;
+		eth_stats->q_ibytes[i] = rxq->stats.rx_bytes;
+	}
+
+	for (i = 0; i < pi->n_tx_qsets; i++) {
+		struct sge_eth_txq *txq =
+			&s->ethtxq[pi->first_qset + i];
+
+		eth_stats->q_opackets[i] = txq->stats.pkts;
+		eth_stats->q_obytes[i] = txq->stats.tx_bytes;
+		eth_stats->q_errors[i] = txq->stats.mapping_err;
+	}
+}
+
+/*
+ * Reset port statistics.
+ */
+static void cxgbe_dev_stats_reset(struct rte_eth_dev *eth_dev)
+{
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct adapter *adapter = pi->adapter;
+	struct sge *s = &adapter->sge;
+	unsigned int i;
+
+	cxgbe_stats_reset(pi);
+	for (i = 0; i < pi->n_rx_qsets; i++) {
+		struct sge_eth_rxq *rxq =
+			&s->ethrxq[pi->first_qset + i];
+
+		rxq->stats.pkts = 0;
+		rxq->stats.rx_bytes = 0;
+	}
+	for (i = 0; i < pi->n_tx_qsets; i++) {
+		struct sge_eth_txq *txq =
+			&s->ethtxq[pi->first_qset + i];
+
+		txq->stats.pkts = 0;
+		txq->stats.tx_bytes = 0;
+		txq->stats.mapping_err = 0;
+	}
+}
+
+static int cxgbe_flow_ctrl_get(struct rte_eth_dev *eth_dev,
+			       struct rte_eth_fc_conf *fc_conf)
+{
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct link_config *lc = &pi->link_cfg;
+	int rx_pause, tx_pause;
+
+	fc_conf->autoneg = lc->fc & PAUSE_AUTONEG;
+	rx_pause = lc->fc & PAUSE_RX;
+	tx_pause = lc->fc & PAUSE_TX;
+
+	if (rx_pause && tx_pause)
+		fc_conf->mode = RTE_FC_FULL;
+	else if (rx_pause)
+		fc_conf->mode = RTE_FC_RX_PAUSE;
+	else if (tx_pause)
+		fc_conf->mode = RTE_FC_TX_PAUSE;
+	else
+		fc_conf->mode = RTE_FC_NONE;
+	return 0;
+}
+
+static int cxgbe_flow_ctrl_set(struct rte_eth_dev *eth_dev,
+			       struct rte_eth_fc_conf *fc_conf)
+{
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct adapter *adapter = pi->adapter;
+	struct link_config *lc = &pi->link_cfg;
+
+	if (lc->supported & FW_PORT_CAP_ANEG) {
+		if (fc_conf->autoneg)
+			lc->requested_fc |= PAUSE_AUTONEG;
+		else
+			lc->requested_fc &= ~PAUSE_AUTONEG;
+	}
+
+	if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
+	    (fc_conf->mode & RTE_FC_RX_PAUSE))
+		lc->requested_fc |= PAUSE_RX;
+	else
+		lc->requested_fc &= ~PAUSE_RX;
+
+	if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
+	    (fc_conf->mode & RTE_FC_TX_PAUSE))
+		lc->requested_fc |= PAUSE_TX;
+	else
+		lc->requested_fc &= ~PAUSE_TX;
+
+	return t4_link_l1cfg(adapter, adapter->mbox, pi->tx_chan,
+			     &pi->link_cfg);
+}
+
+static const uint32_t *
+cxgbe_dev_supported_ptypes_get(struct rte_eth_dev *eth_dev)
+{
+	static const uint32_t ptypes[] = {
+		RTE_PTYPE_L3_IPV4,
+		RTE_PTYPE_L3_IPV6,
+		RTE_PTYPE_UNKNOWN
+	};
+
+	if (eth_dev->rx_pkt_burst == cxgbe_recv_pkts)
+		return ptypes;
+	return NULL;
+}
+
+static const struct eth_dev_ops cxgbe_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,
+	.stats_get		= cxgbe_dev_stats_get,
+	.stats_reset		= cxgbe_dev_stats_reset,
+	.flow_ctrl_get		= cxgbe_flow_ctrl_get,
+	.flow_ctrl_set		= cxgbe_flow_ctrl_set,
+};
+
+/*
+ * Initialize driver
+ * It returns 0 on success.
+ */
+static int eth_cxgbe_dev_init(struct rte_eth_dev *eth_dev)
+{
+	struct rte_pci_device *pci_dev;
+	struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
+	struct adapter *adapter = NULL;
+	char name[RTE_ETH_NAME_MAX_LEN];
+	int err = 0;
+
+	CXGBE_FUNC_TRACE();
+
+	eth_dev->dev_ops = &cxgbe_eth_dev_ops;
+	eth_dev->rx_pkt_burst = &cxgbe_recv_pkts;
+	eth_dev->tx_pkt_burst = &cxgbe_xmit_pkts;
+
+	/* for secondary processes, we don't initialise any further as primary
+	 * has already done this work.
+	 */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	pci_dev = eth_dev->pci_dev;
+
+	snprintf(name, sizeof(name), "cxgbeadapter%d", eth_dev->data->port_id);
+	adapter = rte_zmalloc(name, sizeof(*adapter), 0);
+	if (!adapter)
+		return -1;
+
+	adapter->use_unpacked_mode = 1;
+	adapter->regs = (void *)pci_dev->mem_resource[0].addr;
+	if (!adapter->regs) {
+		dev_err(adapter, "%s: cannot map device registers\n", __func__);
+		err = -ENOMEM;
+		goto out_free_adapter;
+	}
+	adapter->pdev = pci_dev;
+	adapter->eth_dev = eth_dev;
+	pi->adapter = adapter;
+
+	err = cxgbe_probe(adapter);
+	if (err) {
+		dev_err(adapter, "%s: cxgbe probe failed with err %d\n",
+			__func__, err);
+		goto out_free_adapter;
+	}
+
+	return 0;
+
+out_free_adapter:
+	rte_free(adapter);
+	return err;
+}
+
+static struct eth_driver rte_cxgbe_pmd = {
+	.pci_drv = {
+		.name = "rte_cxgbe_pmd",
+		.id_table = cxgb4_pci_tbl,
+		.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
+	},
+	.eth_dev_init = eth_cxgbe_dev_init,
+	.dev_private_size = sizeof(struct port_info),
+};
+
+/*
+ * Driver initialization routine.
+ * Invoked once at EAL init time.
+ * Register itself as the [Poll Mode] Driver of PCI CXGBE devices.
+ */
+static int rte_cxgbe_pmd_init(const char *name __rte_unused,
+			      const char *params __rte_unused)
+{
+	CXGBE_FUNC_TRACE();
+
+	rte_eth_driver_register(&rte_cxgbe_pmd);
+	return 0;
+}
+
+static struct rte_driver rte_cxgbe_driver = {
+	.name = "cxgbe_driver",
+	.type = PMD_PDEV,
+	.init = rte_cxgbe_pmd_init,
+};
+
+PMD_REGISTER_DRIVER(rte_cxgbe_driver);