Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2813 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
new file mode 100644
index 000000000..6b73648b3
--- /dev/null
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -0,0 +1,2813 @@
+/*
+ * AMD 10Gb Ethernet driver
+ *
+ * This file is available to you under your choice of the following two
+ * licenses:
+ *
+ * License 1: GPLv2
+ *
+ * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
+ *
+ * This file is free software; you may copy, redistribute and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
+ *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
+ *     Inc. unless otherwise expressly agreed to in writing between Synopsys
+ *     and you.
+ *
+ *     The Software IS NOT an item of Licensed Software or Licensed Product
+ *     under any End User Software License Agreement or Agreement for Licensed
+ *     Product with Synopsys or any supplement thereto.  Permission is hereby
+ *     granted, free of charge, to any person obtaining a copy of this software
+ *     annotated with this license and the Software, to deal in the Software
+ *     without restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ *     of the Software, and to permit persons to whom the Software is furnished
+ *     to do so, subject to the following conditions:
+ *
+ *     The above copyright notice and this permission notice shall be included
+ *     in all copies or substantial portions of the Software.
+ *
+ *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
+ *     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.
+ *
+ *
+ * License 2: Modified BSD
+ *
+ * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
+ * 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 Advanced Micro Devices, Inc. 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 <COPYRIGHT HOLDER> 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.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
+ *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
+ *     Inc. unless otherwise expressly agreed to in writing between Synopsys
+ *     and you.
+ *
+ *     The Software IS NOT an item of Licensed Software or Licensed Product
+ *     under any End User Software License Agreement or Agreement for Licensed
+ *     Product with Synopsys or any supplement thereto.  Permission is hereby
+ *     granted, free of charge, to any person obtaining a copy of this software
+ *     annotated with this license and the Software, to deal in the Software
+ *     without restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ *     of the Software, and to permit persons to whom the Software is furnished
+ *     to do so, subject to the following conditions:
+ *
+ *     The above copyright notice and this permission notice shall be included
+ *     in all copies or substantial portions of the Software.
+ *
+ *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
+ *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
+ *     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 <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/tcp.h>
+#include <linux/if_vlan.h>
+#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/if_ether.h>
+#include <linux/net_tstamp.h>
+#include <linux/phy.h>
+#include <net/vxlan.h>
+
+#include "xgbe.h"
+#include "xgbe-common.h"
+
+static unsigned int ecc_sec_info_threshold = 10;
+static unsigned int ecc_sec_warn_threshold = 10000;
+static unsigned int ecc_sec_period = 600;
+static unsigned int ecc_ded_threshold = 2;
+static unsigned int ecc_ded_period = 600;
+
+#ifdef CONFIG_AMD_XGBE_HAVE_ECC
+/* Only expose the ECC parameters if supported */
+module_param(ecc_sec_info_threshold, uint, 0644);
+MODULE_PARM_DESC(ecc_sec_info_threshold,
+		 " ECC corrected error informational threshold setting");
+
+module_param(ecc_sec_warn_threshold, uint, 0644);
+MODULE_PARM_DESC(ecc_sec_warn_threshold,
+		 " ECC corrected error warning threshold setting");
+
+module_param(ecc_sec_period, uint, 0644);
+MODULE_PARM_DESC(ecc_sec_period, " ECC corrected error period (in seconds)");
+
+module_param(ecc_ded_threshold, uint, 0644);
+MODULE_PARM_DESC(ecc_ded_threshold, " ECC detected error threshold setting");
+
+module_param(ecc_ded_period, uint, 0644);
+MODULE_PARM_DESC(ecc_ded_period, " ECC detected error period (in seconds)");
+#endif
+
+static int xgbe_one_poll(struct napi_struct *, int);
+static int xgbe_all_poll(struct napi_struct *, int);
+static void xgbe_stop(struct xgbe_prv_data *);
+
+static void *xgbe_alloc_node(size_t size, int node)
+{
+	void *mem;
+
+	mem = kzalloc_node(size, GFP_KERNEL, node);
+	if (!mem)
+		mem = kzalloc(size, GFP_KERNEL);
+
+	return mem;
+}
+
+static void xgbe_free_channels(struct xgbe_prv_data *pdata)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(pdata->channel); i++) {
+		if (!pdata->channel[i])
+			continue;
+
+		kfree(pdata->channel[i]->rx_ring);
+		kfree(pdata->channel[i]->tx_ring);
+		kfree(pdata->channel[i]);
+
+		pdata->channel[i] = NULL;
+	}
+
+	pdata->channel_count = 0;
+}
+
+static int xgbe_alloc_channels(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_channel *channel;
+	struct xgbe_ring *ring;
+	unsigned int count, i;
+	unsigned int cpu;
+	int node;
+
+	count = max_t(unsigned int, pdata->tx_ring_count, pdata->rx_ring_count);
+	for (i = 0; i < count; i++) {
+		/* Attempt to use a CPU on the node the device is on */
+		cpu = cpumask_local_spread(i, dev_to_node(pdata->dev));
+
+		/* Set the allocation node based on the returned CPU */
+		node = cpu_to_node(cpu);
+
+		channel = xgbe_alloc_node(sizeof(*channel), node);
+		if (!channel)
+			goto err_mem;
+		pdata->channel[i] = channel;
+
+		snprintf(channel->name, sizeof(channel->name), "channel-%u", i);
+		channel->pdata = pdata;
+		channel->queue_index = i;
+		channel->dma_regs = pdata->xgmac_regs + DMA_CH_BASE +
+				    (DMA_CH_INC * i);
+		channel->node = node;
+		cpumask_set_cpu(cpu, &channel->affinity_mask);
+
+		if (pdata->per_channel_irq)
+			channel->dma_irq = pdata->channel_irq[i];
+
+		if (i < pdata->tx_ring_count) {
+			ring = xgbe_alloc_node(sizeof(*ring), node);
+			if (!ring)
+				goto err_mem;
+
+			spin_lock_init(&ring->lock);
+			ring->node = node;
+
+			channel->tx_ring = ring;
+		}
+
+		if (i < pdata->rx_ring_count) {
+			ring = xgbe_alloc_node(sizeof(*ring), node);
+			if (!ring)
+				goto err_mem;
+
+			spin_lock_init(&ring->lock);
+			ring->node = node;
+
+			channel->rx_ring = ring;
+		}
+
+		netif_dbg(pdata, drv, pdata->netdev,
+			  "%s: cpu=%u, node=%d\n", channel->name, cpu, node);
+
+		netif_dbg(pdata, drv, pdata->netdev,
+			  "%s: dma_regs=%p, dma_irq=%d, tx=%p, rx=%p\n",
+			  channel->name, channel->dma_regs, channel->dma_irq,
+			  channel->tx_ring, channel->rx_ring);
+	}
+
+	pdata->channel_count = count;
+
+	return 0;
+
+err_mem:
+	xgbe_free_channels(pdata);
+
+	return -ENOMEM;
+}
+
+static inline unsigned int xgbe_tx_avail_desc(struct xgbe_ring *ring)
+{
+	return (ring->rdesc_count - (ring->cur - ring->dirty));
+}
+
+static inline unsigned int xgbe_rx_dirty_desc(struct xgbe_ring *ring)
+{
+	return (ring->cur - ring->dirty);
+}
+
+static int xgbe_maybe_stop_tx_queue(struct xgbe_channel *channel,
+				    struct xgbe_ring *ring, unsigned int count)
+{
+	struct xgbe_prv_data *pdata = channel->pdata;
+
+	if (count > xgbe_tx_avail_desc(ring)) {
+		netif_info(pdata, drv, pdata->netdev,
+			   "Tx queue stopped, not enough descriptors available\n");
+		netif_stop_subqueue(pdata->netdev, channel->queue_index);
+		ring->tx.queue_stopped = 1;
+
+		/* If we haven't notified the hardware because of xmit_more
+		 * support, tell it now
+		 */
+		if (ring->tx.xmit_more)
+			pdata->hw_if.tx_start_xmit(channel, ring);
+
+		return NETDEV_TX_BUSY;
+	}
+
+	return 0;
+}
+
+static int xgbe_calc_rx_buf_size(struct net_device *netdev, unsigned int mtu)
+{
+	unsigned int rx_buf_size;
+
+	rx_buf_size = mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
+	rx_buf_size = clamp_val(rx_buf_size, XGBE_RX_MIN_BUF_SIZE, PAGE_SIZE);
+
+	rx_buf_size = (rx_buf_size + XGBE_RX_BUF_ALIGN - 1) &
+		      ~(XGBE_RX_BUF_ALIGN - 1);
+
+	return rx_buf_size;
+}
+
+static void xgbe_enable_rx_tx_int(struct xgbe_prv_data *pdata,
+				  struct xgbe_channel *channel)
+{
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	enum xgbe_int int_id;
+
+	if (channel->tx_ring && channel->rx_ring)
+		int_id = XGMAC_INT_DMA_CH_SR_TI_RI;
+	else if (channel->tx_ring)
+		int_id = XGMAC_INT_DMA_CH_SR_TI;
+	else if (channel->rx_ring)
+		int_id = XGMAC_INT_DMA_CH_SR_RI;
+	else
+		return;
+
+	hw_if->enable_int(channel, int_id);
+}
+
+static void xgbe_enable_rx_tx_ints(struct xgbe_prv_data *pdata)
+{
+	unsigned int i;
+
+	for (i = 0; i < pdata->channel_count; i++)
+		xgbe_enable_rx_tx_int(pdata, pdata->channel[i]);
+}
+
+static void xgbe_disable_rx_tx_int(struct xgbe_prv_data *pdata,
+				   struct xgbe_channel *channel)
+{
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	enum xgbe_int int_id;
+
+	if (channel->tx_ring && channel->rx_ring)
+		int_id = XGMAC_INT_DMA_CH_SR_TI_RI;
+	else if (channel->tx_ring)
+		int_id = XGMAC_INT_DMA_CH_SR_TI;
+	else if (channel->rx_ring)
+		int_id = XGMAC_INT_DMA_CH_SR_RI;
+	else
+		return;
+
+	hw_if->disable_int(channel, int_id);
+}
+
+static void xgbe_disable_rx_tx_ints(struct xgbe_prv_data *pdata)
+{
+	unsigned int i;
+
+	for (i = 0; i < pdata->channel_count; i++)
+		xgbe_disable_rx_tx_int(pdata, pdata->channel[i]);
+}
+
+static bool xgbe_ecc_sec(struct xgbe_prv_data *pdata, unsigned long *period,
+			 unsigned int *count, const char *area)
+{
+	if (time_before(jiffies, *period)) {
+		(*count)++;
+	} else {
+		*period = jiffies + (ecc_sec_period * HZ);
+		*count = 1;
+	}
+
+	if (*count > ecc_sec_info_threshold)
+		dev_warn_once(pdata->dev,
+			      "%s ECC corrected errors exceed informational threshold\n",
+			      area);
+
+	if (*count > ecc_sec_warn_threshold) {
+		dev_warn_once(pdata->dev,
+			      "%s ECC corrected errors exceed warning threshold\n",
+			      area);
+		return true;
+	}
+
+	return false;
+}
+
+static bool xgbe_ecc_ded(struct xgbe_prv_data *pdata, unsigned long *period,
+			 unsigned int *count, const char *area)
+{
+	if (time_before(jiffies, *period)) {
+		(*count)++;
+	} else {
+		*period = jiffies + (ecc_ded_period * HZ);
+		*count = 1;
+	}
+
+	if (*count > ecc_ded_threshold) {
+		netdev_alert(pdata->netdev,
+			     "%s ECC detected errors exceed threshold\n",
+			     area);
+		return true;
+	}
+
+	return false;
+}
+
+static void xgbe_ecc_isr_task(struct tasklet_struct *t)
+{
+	struct xgbe_prv_data *pdata = from_tasklet(pdata, t, tasklet_ecc);
+	unsigned int ecc_isr;
+	bool stop = false;
+
+	/* Mask status with only the interrupts we care about */
+	ecc_isr = XP_IOREAD(pdata, XP_ECC_ISR);
+	ecc_isr &= XP_IOREAD(pdata, XP_ECC_IER);
+	netif_dbg(pdata, intr, pdata->netdev, "ECC_ISR=%#010x\n", ecc_isr);
+
+	if (XP_GET_BITS(ecc_isr, XP_ECC_ISR, TX_DED)) {
+		stop |= xgbe_ecc_ded(pdata, &pdata->tx_ded_period,
+				     &pdata->tx_ded_count, "TX fifo");
+	}
+
+	if (XP_GET_BITS(ecc_isr, XP_ECC_ISR, RX_DED)) {
+		stop |= xgbe_ecc_ded(pdata, &pdata->rx_ded_period,
+				     &pdata->rx_ded_count, "RX fifo");
+	}
+
+	if (XP_GET_BITS(ecc_isr, XP_ECC_ISR, DESC_DED)) {
+		stop |= xgbe_ecc_ded(pdata, &pdata->desc_ded_period,
+				     &pdata->desc_ded_count,
+				     "descriptor cache");
+	}
+
+	if (stop) {
+		pdata->hw_if.disable_ecc_ded(pdata);
+		schedule_work(&pdata->stopdev_work);
+		goto out;
+	}
+
+	if (XP_GET_BITS(ecc_isr, XP_ECC_ISR, TX_SEC)) {
+		if (xgbe_ecc_sec(pdata, &pdata->tx_sec_period,
+				 &pdata->tx_sec_count, "TX fifo"))
+			pdata->hw_if.disable_ecc_sec(pdata, XGBE_ECC_SEC_TX);
+	}
+
+	if (XP_GET_BITS(ecc_isr, XP_ECC_ISR, RX_SEC))
+		if (xgbe_ecc_sec(pdata, &pdata->rx_sec_period,
+				 &pdata->rx_sec_count, "RX fifo"))
+			pdata->hw_if.disable_ecc_sec(pdata, XGBE_ECC_SEC_RX);
+
+	if (XP_GET_BITS(ecc_isr, XP_ECC_ISR, DESC_SEC))
+		if (xgbe_ecc_sec(pdata, &pdata->desc_sec_period,
+				 &pdata->desc_sec_count, "descriptor cache"))
+			pdata->hw_if.disable_ecc_sec(pdata, XGBE_ECC_SEC_DESC);
+
+out:
+	/* Clear all ECC interrupts */
+	XP_IOWRITE(pdata, XP_ECC_ISR, ecc_isr);
+
+	/* Reissue interrupt if status is not clear */
+	if (pdata->vdata->irq_reissue_support)
+		XP_IOWRITE(pdata, XP_INT_REISSUE_EN, 1 << 1);
+}
+
+static irqreturn_t xgbe_ecc_isr(int irq, void *data)
+{
+	struct xgbe_prv_data *pdata = data;
+
+	if (pdata->isr_as_tasklet)
+		tasklet_schedule(&pdata->tasklet_ecc);
+	else
+		xgbe_ecc_isr_task(&pdata->tasklet_ecc);
+
+	return IRQ_HANDLED;
+}
+
+static void xgbe_isr_task(struct tasklet_struct *t)
+{
+	struct xgbe_prv_data *pdata = from_tasklet(pdata, t, tasklet_dev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_channel *channel;
+	unsigned int dma_isr, dma_ch_isr;
+	unsigned int mac_isr, mac_tssr, mac_mdioisr;
+	unsigned int i;
+
+	/* The DMA interrupt status register also reports MAC and MTL
+	 * interrupts. So for polling mode, we just need to check for
+	 * this register to be non-zero
+	 */
+	dma_isr = XGMAC_IOREAD(pdata, DMA_ISR);
+	if (!dma_isr)
+		goto isr_done;
+
+	netif_dbg(pdata, intr, pdata->netdev, "DMA_ISR=%#010x\n", dma_isr);
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		if (!(dma_isr & (1 << i)))
+			continue;
+
+		channel = pdata->channel[i];
+
+		dma_ch_isr = XGMAC_DMA_IOREAD(channel, DMA_CH_SR);
+		netif_dbg(pdata, intr, pdata->netdev, "DMA_CH%u_ISR=%#010x\n",
+			  i, dma_ch_isr);
+
+		/* The TI or RI interrupt bits may still be set even if using
+		 * per channel DMA interrupts. Check to be sure those are not
+		 * enabled before using the private data napi structure.
+		 */
+		if (!pdata->per_channel_irq &&
+		    (XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, TI) ||
+		     XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, RI))) {
+			if (napi_schedule_prep(&pdata->napi)) {
+				/* Disable Tx and Rx interrupts */
+				xgbe_disable_rx_tx_ints(pdata);
+
+				/* Turn on polling */
+				__napi_schedule(&pdata->napi);
+			}
+		} else {
+			/* Don't clear Rx/Tx status if doing per channel DMA
+			 * interrupts, these will be cleared by the ISR for
+			 * per channel DMA interrupts.
+			 */
+			XGMAC_SET_BITS(dma_ch_isr, DMA_CH_SR, TI, 0);
+			XGMAC_SET_BITS(dma_ch_isr, DMA_CH_SR, RI, 0);
+		}
+
+		if (XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, RBU))
+			pdata->ext_stats.rx_buffer_unavailable++;
+
+		/* Restart the device on a Fatal Bus Error */
+		if (XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, FBE))
+			schedule_work(&pdata->restart_work);
+
+		/* Clear interrupt signals */
+		XGMAC_DMA_IOWRITE(channel, DMA_CH_SR, dma_ch_isr);
+	}
+
+	if (XGMAC_GET_BITS(dma_isr, DMA_ISR, MACIS)) {
+		mac_isr = XGMAC_IOREAD(pdata, MAC_ISR);
+
+		netif_dbg(pdata, intr, pdata->netdev, "MAC_ISR=%#010x\n",
+			  mac_isr);
+
+		if (XGMAC_GET_BITS(mac_isr, MAC_ISR, MMCTXIS))
+			hw_if->tx_mmc_int(pdata);
+
+		if (XGMAC_GET_BITS(mac_isr, MAC_ISR, MMCRXIS))
+			hw_if->rx_mmc_int(pdata);
+
+		if (XGMAC_GET_BITS(mac_isr, MAC_ISR, TSIS)) {
+			mac_tssr = XGMAC_IOREAD(pdata, MAC_TSSR);
+
+			netif_dbg(pdata, intr, pdata->netdev,
+				  "MAC_TSSR=%#010x\n", mac_tssr);
+
+			if (XGMAC_GET_BITS(mac_tssr, MAC_TSSR, TXTSC)) {
+				/* Read Tx Timestamp to clear interrupt */
+				pdata->tx_tstamp =
+					hw_if->get_tx_tstamp(pdata);
+				queue_work(pdata->dev_workqueue,
+					   &pdata->tx_tstamp_work);
+			}
+		}
+
+		if (XGMAC_GET_BITS(mac_isr, MAC_ISR, SMI)) {
+			mac_mdioisr = XGMAC_IOREAD(pdata, MAC_MDIOISR);
+
+			netif_dbg(pdata, intr, pdata->netdev,
+				  "MAC_MDIOISR=%#010x\n", mac_mdioisr);
+
+			if (XGMAC_GET_BITS(mac_mdioisr, MAC_MDIOISR,
+					   SNGLCOMPINT))
+				complete(&pdata->mdio_complete);
+		}
+	}
+
+isr_done:
+	/* If there is not a separate AN irq, handle it here */
+	if (pdata->dev_irq == pdata->an_irq)
+		pdata->phy_if.an_isr(pdata);
+
+	/* If there is not a separate ECC irq, handle it here */
+	if (pdata->vdata->ecc_support && (pdata->dev_irq == pdata->ecc_irq))
+		xgbe_ecc_isr_task(&pdata->tasklet_ecc);
+
+	/* If there is not a separate I2C irq, handle it here */
+	if (pdata->vdata->i2c_support && (pdata->dev_irq == pdata->i2c_irq))
+		pdata->i2c_if.i2c_isr(pdata);
+
+	/* Reissue interrupt if status is not clear */
+	if (pdata->vdata->irq_reissue_support) {
+		unsigned int reissue_mask;
+
+		reissue_mask = 1 << 0;
+		if (!pdata->per_channel_irq)
+			reissue_mask |= 0xffff << 4;
+
+		XP_IOWRITE(pdata, XP_INT_REISSUE_EN, reissue_mask);
+	}
+}
+
+static irqreturn_t xgbe_isr(int irq, void *data)
+{
+	struct xgbe_prv_data *pdata = data;
+
+	if (pdata->isr_as_tasklet)
+		tasklet_schedule(&pdata->tasklet_dev);
+	else
+		xgbe_isr_task(&pdata->tasklet_dev);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t xgbe_dma_isr(int irq, void *data)
+{
+	struct xgbe_channel *channel = data;
+	struct xgbe_prv_data *pdata = channel->pdata;
+	unsigned int dma_status;
+
+	/* Per channel DMA interrupts are enabled, so we use the per
+	 * channel napi structure and not the private data napi structure
+	 */
+	if (napi_schedule_prep(&channel->napi)) {
+		/* Disable Tx and Rx interrupts */
+		if (pdata->channel_irq_mode)
+			xgbe_disable_rx_tx_int(pdata, channel);
+		else
+			disable_irq_nosync(channel->dma_irq);
+
+		/* Turn on polling */
+		__napi_schedule_irqoff(&channel->napi);
+	}
+
+	/* Clear Tx/Rx signals */
+	dma_status = 0;
+	XGMAC_SET_BITS(dma_status, DMA_CH_SR, TI, 1);
+	XGMAC_SET_BITS(dma_status, DMA_CH_SR, RI, 1);
+	XGMAC_DMA_IOWRITE(channel, DMA_CH_SR, dma_status);
+
+	return IRQ_HANDLED;
+}
+
+static void xgbe_tx_timer(struct timer_list *t)
+{
+	struct xgbe_channel *channel = from_timer(channel, t, tx_timer);
+	struct xgbe_prv_data *pdata = channel->pdata;
+	struct napi_struct *napi;
+
+	DBGPR("-->xgbe_tx_timer\n");
+
+	napi = (pdata->per_channel_irq) ? &channel->napi : &pdata->napi;
+
+	if (napi_schedule_prep(napi)) {
+		/* Disable Tx and Rx interrupts */
+		if (pdata->per_channel_irq)
+			if (pdata->channel_irq_mode)
+				xgbe_disable_rx_tx_int(pdata, channel);
+			else
+				disable_irq_nosync(channel->dma_irq);
+		else
+			xgbe_disable_rx_tx_ints(pdata);
+
+		/* Turn on polling */
+		__napi_schedule(napi);
+	}
+
+	channel->tx_timer_active = 0;
+
+	DBGPR("<--xgbe_tx_timer\n");
+}
+
+static void xgbe_service(struct work_struct *work)
+{
+	struct xgbe_prv_data *pdata = container_of(work,
+						   struct xgbe_prv_data,
+						   service_work);
+
+	pdata->phy_if.phy_status(pdata);
+}
+
+static void xgbe_service_timer(struct timer_list *t)
+{
+	struct xgbe_prv_data *pdata = from_timer(pdata, t, service_timer);
+	struct xgbe_channel *channel;
+	unsigned int i;
+
+	queue_work(pdata->dev_workqueue, &pdata->service_work);
+
+	mod_timer(&pdata->service_timer, jiffies + HZ);
+
+	if (!pdata->tx_usecs)
+		return;
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		channel = pdata->channel[i];
+		if (!channel->tx_ring || channel->tx_timer_active)
+			break;
+		channel->tx_timer_active = 1;
+		mod_timer(&channel->tx_timer,
+			  jiffies + usecs_to_jiffies(pdata->tx_usecs));
+	}
+}
+
+static void xgbe_init_timers(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_channel *channel;
+	unsigned int i;
+
+	timer_setup(&pdata->service_timer, xgbe_service_timer, 0);
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		channel = pdata->channel[i];
+		if (!channel->tx_ring)
+			break;
+
+		timer_setup(&channel->tx_timer, xgbe_tx_timer, 0);
+	}
+}
+
+static void xgbe_start_timers(struct xgbe_prv_data *pdata)
+{
+	mod_timer(&pdata->service_timer, jiffies + HZ);
+}
+
+static void xgbe_stop_timers(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_channel *channel;
+	unsigned int i;
+
+	del_timer_sync(&pdata->service_timer);
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		channel = pdata->channel[i];
+		if (!channel->tx_ring)
+			break;
+
+		/* Deactivate the Tx timer */
+		del_timer_sync(&channel->tx_timer);
+		channel->tx_timer_active = 0;
+	}
+}
+
+void xgbe_get_all_hw_features(struct xgbe_prv_data *pdata)
+{
+	unsigned int mac_hfr0, mac_hfr1, mac_hfr2;
+	struct xgbe_hw_features *hw_feat = &pdata->hw_feat;
+
+	mac_hfr0 = XGMAC_IOREAD(pdata, MAC_HWF0R);
+	mac_hfr1 = XGMAC_IOREAD(pdata, MAC_HWF1R);
+	mac_hfr2 = XGMAC_IOREAD(pdata, MAC_HWF2R);
+
+	memset(hw_feat, 0, sizeof(*hw_feat));
+
+	hw_feat->version = XGMAC_IOREAD(pdata, MAC_VR);
+
+	/* Hardware feature register 0 */
+	hw_feat->gmii        = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, GMIISEL);
+	hw_feat->vlhash      = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, VLHASH);
+	hw_feat->sma         = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, SMASEL);
+	hw_feat->rwk         = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, RWKSEL);
+	hw_feat->mgk         = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, MGKSEL);
+	hw_feat->mmc         = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, MMCSEL);
+	hw_feat->aoe         = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, ARPOFFSEL);
+	hw_feat->ts          = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, TSSEL);
+	hw_feat->eee         = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, EEESEL);
+	hw_feat->tx_coe      = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, TXCOESEL);
+	hw_feat->rx_coe      = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, RXCOESEL);
+	hw_feat->addn_mac    = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R,
+					      ADDMACADRSEL);
+	hw_feat->ts_src      = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, TSSTSSEL);
+	hw_feat->sa_vlan_ins = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, SAVLANINS);
+	hw_feat->vxn         = XGMAC_GET_BITS(mac_hfr0, MAC_HWF0R, VXN);
+
+	/* Hardware feature register 1 */
+	hw_feat->rx_fifo_size  = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R,
+						RXFIFOSIZE);
+	hw_feat->tx_fifo_size  = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R,
+						TXFIFOSIZE);
+	hw_feat->adv_ts_hi     = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, ADVTHWORD);
+	hw_feat->dma_width     = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, ADDR64);
+	hw_feat->dcb           = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, DCBEN);
+	hw_feat->sph           = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, SPHEN);
+	hw_feat->tso           = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, TSOEN);
+	hw_feat->dma_debug     = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, DBGMEMA);
+	hw_feat->rss           = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, RSSEN);
+	hw_feat->tc_cnt	       = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R, NUMTC);
+	hw_feat->hash_table_size = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R,
+						  HASHTBLSZ);
+	hw_feat->l3l4_filter_num = XGMAC_GET_BITS(mac_hfr1, MAC_HWF1R,
+						  L3L4FNUM);
+
+	/* Hardware feature register 2 */
+	hw_feat->rx_q_cnt     = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, RXQCNT);
+	hw_feat->tx_q_cnt     = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, TXQCNT);
+	hw_feat->rx_ch_cnt    = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, RXCHCNT);
+	hw_feat->tx_ch_cnt    = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, TXCHCNT);
+	hw_feat->pps_out_num  = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, PPSOUTNUM);
+	hw_feat->aux_snap_num = XGMAC_GET_BITS(mac_hfr2, MAC_HWF2R, AUXSNAPNUM);
+
+	/* Translate the Hash Table size into actual number */
+	switch (hw_feat->hash_table_size) {
+	case 0:
+		break;
+	case 1:
+		hw_feat->hash_table_size = 64;
+		break;
+	case 2:
+		hw_feat->hash_table_size = 128;
+		break;
+	case 3:
+		hw_feat->hash_table_size = 256;
+		break;
+	}
+
+	/* Translate the address width setting into actual number */
+	switch (hw_feat->dma_width) {
+	case 0:
+		hw_feat->dma_width = 32;
+		break;
+	case 1:
+		hw_feat->dma_width = 40;
+		break;
+	case 2:
+		hw_feat->dma_width = 48;
+		break;
+	default:
+		hw_feat->dma_width = 32;
+	}
+
+	/* The Queue, Channel and TC counts are zero based so increment them
+	 * to get the actual number
+	 */
+	hw_feat->rx_q_cnt++;
+	hw_feat->tx_q_cnt++;
+	hw_feat->rx_ch_cnt++;
+	hw_feat->tx_ch_cnt++;
+	hw_feat->tc_cnt++;
+
+	/* Translate the fifo sizes into actual numbers */
+	hw_feat->rx_fifo_size = 1 << (hw_feat->rx_fifo_size + 7);
+	hw_feat->tx_fifo_size = 1 << (hw_feat->tx_fifo_size + 7);
+
+	if (netif_msg_probe(pdata)) {
+		dev_dbg(pdata->dev, "Hardware features:\n");
+
+		/* Hardware feature register 0 */
+		dev_dbg(pdata->dev, "  1GbE support              : %s\n",
+			hw_feat->gmii ? "yes" : "no");
+		dev_dbg(pdata->dev, "  VLAN hash filter          : %s\n",
+			hw_feat->vlhash ? "yes" : "no");
+		dev_dbg(pdata->dev, "  MDIO interface            : %s\n",
+			hw_feat->sma ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Wake-up packet support    : %s\n",
+			hw_feat->rwk ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Magic packet support      : %s\n",
+			hw_feat->mgk ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Management counters       : %s\n",
+			hw_feat->mmc ? "yes" : "no");
+		dev_dbg(pdata->dev, "  ARP offload               : %s\n",
+			hw_feat->aoe ? "yes" : "no");
+		dev_dbg(pdata->dev, "  IEEE 1588-2008 Timestamp  : %s\n",
+			hw_feat->ts ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Energy Efficient Ethernet : %s\n",
+			hw_feat->eee ? "yes" : "no");
+		dev_dbg(pdata->dev, "  TX checksum offload       : %s\n",
+			hw_feat->tx_coe ? "yes" : "no");
+		dev_dbg(pdata->dev, "  RX checksum offload       : %s\n",
+			hw_feat->rx_coe ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Additional MAC addresses  : %u\n",
+			hw_feat->addn_mac);
+		dev_dbg(pdata->dev, "  Timestamp source          : %s\n",
+			(hw_feat->ts_src == 1) ? "internal" :
+			(hw_feat->ts_src == 2) ? "external" :
+			(hw_feat->ts_src == 3) ? "internal/external" : "n/a");
+		dev_dbg(pdata->dev, "  SA/VLAN insertion         : %s\n",
+			hw_feat->sa_vlan_ins ? "yes" : "no");
+		dev_dbg(pdata->dev, "  VXLAN/NVGRE support       : %s\n",
+			hw_feat->vxn ? "yes" : "no");
+
+		/* Hardware feature register 1 */
+		dev_dbg(pdata->dev, "  RX fifo size              : %u\n",
+			hw_feat->rx_fifo_size);
+		dev_dbg(pdata->dev, "  TX fifo size              : %u\n",
+			hw_feat->tx_fifo_size);
+		dev_dbg(pdata->dev, "  IEEE 1588 high word       : %s\n",
+			hw_feat->adv_ts_hi ? "yes" : "no");
+		dev_dbg(pdata->dev, "  DMA width                 : %u\n",
+			hw_feat->dma_width);
+		dev_dbg(pdata->dev, "  Data Center Bridging      : %s\n",
+			hw_feat->dcb ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Split header              : %s\n",
+			hw_feat->sph ? "yes" : "no");
+		dev_dbg(pdata->dev, "  TCP Segmentation Offload  : %s\n",
+			hw_feat->tso ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Debug memory interface    : %s\n",
+			hw_feat->dma_debug ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Receive Side Scaling      : %s\n",
+			hw_feat->rss ? "yes" : "no");
+		dev_dbg(pdata->dev, "  Traffic Class count       : %u\n",
+			hw_feat->tc_cnt);
+		dev_dbg(pdata->dev, "  Hash table size           : %u\n",
+			hw_feat->hash_table_size);
+		dev_dbg(pdata->dev, "  L3/L4 Filters             : %u\n",
+			hw_feat->l3l4_filter_num);
+
+		/* Hardware feature register 2 */
+		dev_dbg(pdata->dev, "  RX queue count            : %u\n",
+			hw_feat->rx_q_cnt);
+		dev_dbg(pdata->dev, "  TX queue count            : %u\n",
+			hw_feat->tx_q_cnt);
+		dev_dbg(pdata->dev, "  RX DMA channel count      : %u\n",
+			hw_feat->rx_ch_cnt);
+		dev_dbg(pdata->dev, "  TX DMA channel count      : %u\n",
+			hw_feat->rx_ch_cnt);
+		dev_dbg(pdata->dev, "  PPS outputs               : %u\n",
+			hw_feat->pps_out_num);
+		dev_dbg(pdata->dev, "  Auxiliary snapshot inputs : %u\n",
+			hw_feat->aux_snap_num);
+	}
+}
+
+static int xgbe_vxlan_set_port(struct net_device *netdev, unsigned int table,
+			       unsigned int entry, struct udp_tunnel_info *ti)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+
+	pdata->vxlan_port = be16_to_cpu(ti->port);
+	pdata->hw_if.enable_vxlan(pdata);
+
+	return 0;
+}
+
+static int xgbe_vxlan_unset_port(struct net_device *netdev, unsigned int table,
+				 unsigned int entry, struct udp_tunnel_info *ti)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+
+	pdata->hw_if.disable_vxlan(pdata);
+	pdata->vxlan_port = 0;
+
+	return 0;
+}
+
+static const struct udp_tunnel_nic_info xgbe_udp_tunnels = {
+	.set_port	= xgbe_vxlan_set_port,
+	.unset_port	= xgbe_vxlan_unset_port,
+	.flags		= UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
+	.tables		= {
+		{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
+	},
+};
+
+const struct udp_tunnel_nic_info *xgbe_get_udp_tunnel_info(void)
+{
+	return &xgbe_udp_tunnels;
+}
+
+static void xgbe_napi_enable(struct xgbe_prv_data *pdata, unsigned int add)
+{
+	struct xgbe_channel *channel;
+	unsigned int i;
+
+	if (pdata->per_channel_irq) {
+		for (i = 0; i < pdata->channel_count; i++) {
+			channel = pdata->channel[i];
+			if (add)
+				netif_napi_add(pdata->netdev, &channel->napi,
+					       xgbe_one_poll);
+
+			napi_enable(&channel->napi);
+		}
+	} else {
+		if (add)
+			netif_napi_add(pdata->netdev, &pdata->napi,
+				       xgbe_all_poll);
+
+		napi_enable(&pdata->napi);
+	}
+}
+
+static void xgbe_napi_disable(struct xgbe_prv_data *pdata, unsigned int del)
+{
+	struct xgbe_channel *channel;
+	unsigned int i;
+
+	if (pdata->per_channel_irq) {
+		for (i = 0; i < pdata->channel_count; i++) {
+			channel = pdata->channel[i];
+			napi_disable(&channel->napi);
+
+			if (del)
+				netif_napi_del(&channel->napi);
+		}
+	} else {
+		napi_disable(&pdata->napi);
+
+		if (del)
+			netif_napi_del(&pdata->napi);
+	}
+}
+
+static int xgbe_request_irqs(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_channel *channel;
+	struct net_device *netdev = pdata->netdev;
+	unsigned int i;
+	int ret;
+
+	tasklet_setup(&pdata->tasklet_dev, xgbe_isr_task);
+	tasklet_setup(&pdata->tasklet_ecc, xgbe_ecc_isr_task);
+
+	ret = devm_request_irq(pdata->dev, pdata->dev_irq, xgbe_isr, 0,
+			       netdev_name(netdev), pdata);
+	if (ret) {
+		netdev_alert(netdev, "error requesting irq %d\n",
+			     pdata->dev_irq);
+		return ret;
+	}
+
+	if (pdata->vdata->ecc_support && (pdata->dev_irq != pdata->ecc_irq)) {
+		ret = devm_request_irq(pdata->dev, pdata->ecc_irq, xgbe_ecc_isr,
+				       0, pdata->ecc_name, pdata);
+		if (ret) {
+			netdev_alert(netdev, "error requesting ecc irq %d\n",
+				     pdata->ecc_irq);
+			goto err_dev_irq;
+		}
+	}
+
+	if (!pdata->per_channel_irq)
+		return 0;
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		channel = pdata->channel[i];
+		snprintf(channel->dma_irq_name,
+			 sizeof(channel->dma_irq_name) - 1,
+			 "%s-TxRx-%u", netdev_name(netdev),
+			 channel->queue_index);
+
+		ret = devm_request_irq(pdata->dev, channel->dma_irq,
+				       xgbe_dma_isr, 0,
+				       channel->dma_irq_name, channel);
+		if (ret) {
+			netdev_alert(netdev, "error requesting irq %d\n",
+				     channel->dma_irq);
+			goto err_dma_irq;
+		}
+
+		irq_set_affinity_hint(channel->dma_irq,
+				      &channel->affinity_mask);
+	}
+
+	return 0;
+
+err_dma_irq:
+	/* Using an unsigned int, 'i' will go to UINT_MAX and exit */
+	for (i--; i < pdata->channel_count; i--) {
+		channel = pdata->channel[i];
+
+		irq_set_affinity_hint(channel->dma_irq, NULL);
+		devm_free_irq(pdata->dev, channel->dma_irq, channel);
+	}
+
+	if (pdata->vdata->ecc_support && (pdata->dev_irq != pdata->ecc_irq))
+		devm_free_irq(pdata->dev, pdata->ecc_irq, pdata);
+
+err_dev_irq:
+	devm_free_irq(pdata->dev, pdata->dev_irq, pdata);
+
+	return ret;
+}
+
+static void xgbe_free_irqs(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_channel *channel;
+	unsigned int i;
+
+	devm_free_irq(pdata->dev, pdata->dev_irq, pdata);
+
+	tasklet_kill(&pdata->tasklet_dev);
+	tasklet_kill(&pdata->tasklet_ecc);
+
+	if (pdata->vdata->ecc_support && (pdata->dev_irq != pdata->ecc_irq))
+		devm_free_irq(pdata->dev, pdata->ecc_irq, pdata);
+
+	if (!pdata->per_channel_irq)
+		return;
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		channel = pdata->channel[i];
+
+		irq_set_affinity_hint(channel->dma_irq, NULL);
+		devm_free_irq(pdata->dev, channel->dma_irq, channel);
+	}
+}
+
+void xgbe_init_tx_coalesce(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+
+	DBGPR("-->xgbe_init_tx_coalesce\n");
+
+	pdata->tx_usecs = XGMAC_INIT_DMA_TX_USECS;
+	pdata->tx_frames = XGMAC_INIT_DMA_TX_FRAMES;
+
+	hw_if->config_tx_coalesce(pdata);
+
+	DBGPR("<--xgbe_init_tx_coalesce\n");
+}
+
+void xgbe_init_rx_coalesce(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+
+	DBGPR("-->xgbe_init_rx_coalesce\n");
+
+	pdata->rx_riwt = hw_if->usec_to_riwt(pdata, XGMAC_INIT_DMA_RX_USECS);
+	pdata->rx_usecs = XGMAC_INIT_DMA_RX_USECS;
+	pdata->rx_frames = XGMAC_INIT_DMA_RX_FRAMES;
+
+	hw_if->config_rx_coalesce(pdata);
+
+	DBGPR("<--xgbe_init_rx_coalesce\n");
+}
+
+static void xgbe_free_tx_data(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_ring *ring;
+	struct xgbe_ring_data *rdata;
+	unsigned int i, j;
+
+	DBGPR("-->xgbe_free_tx_data\n");
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		ring = pdata->channel[i]->tx_ring;
+		if (!ring)
+			break;
+
+		for (j = 0; j < ring->rdesc_count; j++) {
+			rdata = XGBE_GET_DESC_DATA(ring, j);
+			desc_if->unmap_rdata(pdata, rdata);
+		}
+	}
+
+	DBGPR("<--xgbe_free_tx_data\n");
+}
+
+static void xgbe_free_rx_data(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_ring *ring;
+	struct xgbe_ring_data *rdata;
+	unsigned int i, j;
+
+	DBGPR("-->xgbe_free_rx_data\n");
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		ring = pdata->channel[i]->rx_ring;
+		if (!ring)
+			break;
+
+		for (j = 0; j < ring->rdesc_count; j++) {
+			rdata = XGBE_GET_DESC_DATA(ring, j);
+			desc_if->unmap_rdata(pdata, rdata);
+		}
+	}
+
+	DBGPR("<--xgbe_free_rx_data\n");
+}
+
+static int xgbe_phy_reset(struct xgbe_prv_data *pdata)
+{
+	pdata->phy_link = -1;
+	pdata->phy_speed = SPEED_UNKNOWN;
+
+	return pdata->phy_if.phy_reset(pdata);
+}
+
+int xgbe_powerdown(struct net_device *netdev, unsigned int caller)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	unsigned long flags;
+
+	DBGPR("-->xgbe_powerdown\n");
+
+	if (!netif_running(netdev) ||
+	    (caller == XGMAC_IOCTL_CONTEXT && pdata->power_down)) {
+		netdev_alert(netdev, "Device is already powered down\n");
+		DBGPR("<--xgbe_powerdown\n");
+		return -EINVAL;
+	}
+
+	spin_lock_irqsave(&pdata->lock, flags);
+
+	if (caller == XGMAC_DRIVER_CONTEXT)
+		netif_device_detach(netdev);
+
+	netif_tx_stop_all_queues(netdev);
+
+	xgbe_stop_timers(pdata);
+	flush_workqueue(pdata->dev_workqueue);
+
+	hw_if->powerdown_tx(pdata);
+	hw_if->powerdown_rx(pdata);
+
+	xgbe_napi_disable(pdata, 0);
+
+	pdata->power_down = 1;
+
+	spin_unlock_irqrestore(&pdata->lock, flags);
+
+	DBGPR("<--xgbe_powerdown\n");
+
+	return 0;
+}
+
+int xgbe_powerup(struct net_device *netdev, unsigned int caller)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	unsigned long flags;
+
+	DBGPR("-->xgbe_powerup\n");
+
+	if (!netif_running(netdev) ||
+	    (caller == XGMAC_IOCTL_CONTEXT && !pdata->power_down)) {
+		netdev_alert(netdev, "Device is already powered up\n");
+		DBGPR("<--xgbe_powerup\n");
+		return -EINVAL;
+	}
+
+	spin_lock_irqsave(&pdata->lock, flags);
+
+	pdata->power_down = 0;
+
+	xgbe_napi_enable(pdata, 0);
+
+	hw_if->powerup_tx(pdata);
+	hw_if->powerup_rx(pdata);
+
+	if (caller == XGMAC_DRIVER_CONTEXT)
+		netif_device_attach(netdev);
+
+	netif_tx_start_all_queues(netdev);
+
+	xgbe_start_timers(pdata);
+
+	spin_unlock_irqrestore(&pdata->lock, flags);
+
+	DBGPR("<--xgbe_powerup\n");
+
+	return 0;
+}
+
+static void xgbe_free_memory(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+
+	/* Free the ring descriptors and buffers */
+	desc_if->free_ring_resources(pdata);
+
+	/* Free the channel and ring structures */
+	xgbe_free_channels(pdata);
+}
+
+static int xgbe_alloc_memory(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct net_device *netdev = pdata->netdev;
+	int ret;
+
+	if (pdata->new_tx_ring_count) {
+		pdata->tx_ring_count = pdata->new_tx_ring_count;
+		pdata->tx_q_count = pdata->tx_ring_count;
+		pdata->new_tx_ring_count = 0;
+	}
+
+	if (pdata->new_rx_ring_count) {
+		pdata->rx_ring_count = pdata->new_rx_ring_count;
+		pdata->new_rx_ring_count = 0;
+	}
+
+	/* Calculate the Rx buffer size before allocating rings */
+	pdata->rx_buf_size = xgbe_calc_rx_buf_size(netdev, netdev->mtu);
+
+	/* Allocate the channel and ring structures */
+	ret = xgbe_alloc_channels(pdata);
+	if (ret)
+		return ret;
+
+	/* Allocate the ring descriptors and buffers */
+	ret = desc_if->alloc_ring_resources(pdata);
+	if (ret)
+		goto err_channels;
+
+	/* Initialize the service and Tx timers */
+	xgbe_init_timers(pdata);
+
+	return 0;
+
+err_channels:
+	xgbe_free_memory(pdata);
+
+	return ret;
+}
+
+static int xgbe_start(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_phy_if *phy_if = &pdata->phy_if;
+	struct net_device *netdev = pdata->netdev;
+	unsigned int i;
+	int ret;
+
+	/* Set the number of queues */
+	ret = netif_set_real_num_tx_queues(netdev, pdata->tx_ring_count);
+	if (ret) {
+		netdev_err(netdev, "error setting real tx queue count\n");
+		return ret;
+	}
+
+	ret = netif_set_real_num_rx_queues(netdev, pdata->rx_ring_count);
+	if (ret) {
+		netdev_err(netdev, "error setting real rx queue count\n");
+		return ret;
+	}
+
+	/* Set RSS lookup table data for programming */
+	for (i = 0; i < XGBE_RSS_MAX_TABLE_SIZE; i++)
+		XGMAC_SET_BITS(pdata->rss_table[i], MAC_RSSDR, DMCH,
+			       i % pdata->rx_ring_count);
+
+	ret = hw_if->init(pdata);
+	if (ret)
+		return ret;
+
+	xgbe_napi_enable(pdata, 1);
+
+	ret = xgbe_request_irqs(pdata);
+	if (ret)
+		goto err_napi;
+
+	ret = phy_if->phy_start(pdata);
+	if (ret)
+		goto err_irqs;
+
+	hw_if->enable_tx(pdata);
+	hw_if->enable_rx(pdata);
+
+	udp_tunnel_nic_reset_ntf(netdev);
+
+	netif_tx_start_all_queues(netdev);
+
+	xgbe_start_timers(pdata);
+	queue_work(pdata->dev_workqueue, &pdata->service_work);
+
+	clear_bit(XGBE_STOPPED, &pdata->dev_state);
+
+	return 0;
+
+err_irqs:
+	xgbe_free_irqs(pdata);
+
+err_napi:
+	xgbe_napi_disable(pdata, 1);
+
+	hw_if->exit(pdata);
+
+	return ret;
+}
+
+static void xgbe_stop(struct xgbe_prv_data *pdata)
+{
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_phy_if *phy_if = &pdata->phy_if;
+	struct xgbe_channel *channel;
+	struct net_device *netdev = pdata->netdev;
+	struct netdev_queue *txq;
+	unsigned int i;
+
+	DBGPR("-->xgbe_stop\n");
+
+	if (test_bit(XGBE_STOPPED, &pdata->dev_state))
+		return;
+
+	netif_tx_stop_all_queues(netdev);
+	netif_carrier_off(pdata->netdev);
+
+	xgbe_stop_timers(pdata);
+	flush_workqueue(pdata->dev_workqueue);
+
+	xgbe_vxlan_unset_port(netdev, 0, 0, NULL);
+
+	hw_if->disable_tx(pdata);
+	hw_if->disable_rx(pdata);
+
+	phy_if->phy_stop(pdata);
+
+	xgbe_free_irqs(pdata);
+
+	xgbe_napi_disable(pdata, 1);
+
+	hw_if->exit(pdata);
+
+	for (i = 0; i < pdata->channel_count; i++) {
+		channel = pdata->channel[i];
+		if (!channel->tx_ring)
+			continue;
+
+		txq = netdev_get_tx_queue(netdev, channel->queue_index);
+		netdev_tx_reset_queue(txq);
+	}
+
+	set_bit(XGBE_STOPPED, &pdata->dev_state);
+
+	DBGPR("<--xgbe_stop\n");
+}
+
+static void xgbe_stopdev(struct work_struct *work)
+{
+	struct xgbe_prv_data *pdata = container_of(work,
+						   struct xgbe_prv_data,
+						   stopdev_work);
+
+	rtnl_lock();
+
+	xgbe_stop(pdata);
+
+	xgbe_free_tx_data(pdata);
+	xgbe_free_rx_data(pdata);
+
+	rtnl_unlock();
+
+	netdev_alert(pdata->netdev, "device stopped\n");
+}
+
+void xgbe_full_restart_dev(struct xgbe_prv_data *pdata)
+{
+	/* If not running, "restart" will happen on open */
+	if (!netif_running(pdata->netdev))
+		return;
+
+	xgbe_stop(pdata);
+
+	xgbe_free_memory(pdata);
+	xgbe_alloc_memory(pdata);
+
+	xgbe_start(pdata);
+}
+
+void xgbe_restart_dev(struct xgbe_prv_data *pdata)
+{
+	/* If not running, "restart" will happen on open */
+	if (!netif_running(pdata->netdev))
+		return;
+
+	xgbe_stop(pdata);
+
+	xgbe_free_tx_data(pdata);
+	xgbe_free_rx_data(pdata);
+
+	xgbe_start(pdata);
+}
+
+static void xgbe_restart(struct work_struct *work)
+{
+	struct xgbe_prv_data *pdata = container_of(work,
+						   struct xgbe_prv_data,
+						   restart_work);
+
+	rtnl_lock();
+
+	xgbe_restart_dev(pdata);
+
+	rtnl_unlock();
+}
+
+static void xgbe_tx_tstamp(struct work_struct *work)
+{
+	struct xgbe_prv_data *pdata = container_of(work,
+						   struct xgbe_prv_data,
+						   tx_tstamp_work);
+	struct skb_shared_hwtstamps hwtstamps;
+	u64 nsec;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdata->tstamp_lock, flags);
+	if (!pdata->tx_tstamp_skb)
+		goto unlock;
+
+	if (pdata->tx_tstamp) {
+		nsec = timecounter_cyc2time(&pdata->tstamp_tc,
+					    pdata->tx_tstamp);
+
+		memset(&hwtstamps, 0, sizeof(hwtstamps));
+		hwtstamps.hwtstamp = ns_to_ktime(nsec);
+		skb_tstamp_tx(pdata->tx_tstamp_skb, &hwtstamps);
+	}
+
+	dev_kfree_skb_any(pdata->tx_tstamp_skb);
+
+	pdata->tx_tstamp_skb = NULL;
+
+unlock:
+	spin_unlock_irqrestore(&pdata->tstamp_lock, flags);
+}
+
+static int xgbe_get_hwtstamp_settings(struct xgbe_prv_data *pdata,
+				      struct ifreq *ifreq)
+{
+	if (copy_to_user(ifreq->ifr_data, &pdata->tstamp_config,
+			 sizeof(pdata->tstamp_config)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int xgbe_set_hwtstamp_settings(struct xgbe_prv_data *pdata,
+				      struct ifreq *ifreq)
+{
+	struct hwtstamp_config config;
+	unsigned int mac_tscr;
+
+	if (copy_from_user(&config, ifreq->ifr_data, sizeof(config)))
+		return -EFAULT;
+
+	mac_tscr = 0;
+
+	switch (config.tx_type) {
+	case HWTSTAMP_TX_OFF:
+		break;
+
+	case HWTSTAMP_TX_ON:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	default:
+		return -ERANGE;
+	}
+
+	switch (config.rx_filter) {
+	case HWTSTAMP_FILTER_NONE:
+		break;
+
+	case HWTSTAMP_FILTER_NTP_ALL:
+	case HWTSTAMP_FILTER_ALL:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENALL, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* PTP v2, UDP, any kind of event packet */
+	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1);
+		fallthrough;	/* to PTP v1, UDP, any kind of event packet */
+	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, SNAPTYPSEL, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* PTP v2, UDP, Sync packet */
+	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1);
+		fallthrough;	/* to PTP v1, UDP, Sync packet */
+	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* PTP v2, UDP, Delay_req packet */
+	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1);
+		fallthrough;	/* to PTP v1, UDP, Delay_req packet */
+	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSMSTRENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* 802.AS1, Ethernet, any kind of event packet */
+	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, AV8021ASMEN, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, SNAPTYPSEL, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* 802.AS1, Ethernet, Sync packet */
+	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, AV8021ASMEN, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* 802.AS1, Ethernet, Delay_req packet */
+	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, AV8021ASMEN, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSMSTRENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* PTP v2/802.AS1, any layer, any kind of event packet */
+	case HWTSTAMP_FILTER_PTP_V2_EVENT:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, SNAPTYPSEL, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* PTP v2/802.AS1, any layer, Sync packet */
+	case HWTSTAMP_FILTER_PTP_V2_SYNC:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	/* PTP v2/802.AS1, any layer, Delay_req packet */
+	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSVER2ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV4ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSIPV6ENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSMSTRENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSEVNTENA, 1);
+		XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSENA, 1);
+		break;
+
+	default:
+		return -ERANGE;
+	}
+
+	pdata->hw_if.config_tstamp(pdata, mac_tscr);
+
+	memcpy(&pdata->tstamp_config, &config, sizeof(config));
+
+	return 0;
+}
+
+static void xgbe_prep_tx_tstamp(struct xgbe_prv_data *pdata,
+				struct sk_buff *skb,
+				struct xgbe_packet_data *packet)
+{
+	unsigned long flags;
+
+	if (XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, PTP)) {
+		spin_lock_irqsave(&pdata->tstamp_lock, flags);
+		if (pdata->tx_tstamp_skb) {
+			/* Another timestamp in progress, ignore this one */
+			XGMAC_SET_BITS(packet->attributes,
+				       TX_PACKET_ATTRIBUTES, PTP, 0);
+		} else {
+			pdata->tx_tstamp_skb = skb_get(skb);
+			skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+		}
+		spin_unlock_irqrestore(&pdata->tstamp_lock, flags);
+	}
+
+	skb_tx_timestamp(skb);
+}
+
+static void xgbe_prep_vlan(struct sk_buff *skb, struct xgbe_packet_data *packet)
+{
+	if (skb_vlan_tag_present(skb))
+		packet->vlan_ctag = skb_vlan_tag_get(skb);
+}
+
+static int xgbe_prep_tso(struct sk_buff *skb, struct xgbe_packet_data *packet)
+{
+	int ret;
+
+	if (!XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
+			    TSO_ENABLE))
+		return 0;
+
+	ret = skb_cow_head(skb, 0);
+	if (ret)
+		return ret;
+
+	if (XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, VXLAN)) {
+		packet->header_len = skb_inner_tcp_all_headers(skb);
+		packet->tcp_header_len = inner_tcp_hdrlen(skb);
+	} else {
+		packet->header_len = skb_tcp_all_headers(skb);
+		packet->tcp_header_len = tcp_hdrlen(skb);
+	}
+	packet->tcp_payload_len = skb->len - packet->header_len;
+	packet->mss = skb_shinfo(skb)->gso_size;
+
+	DBGPR("  packet->header_len=%u\n", packet->header_len);
+	DBGPR("  packet->tcp_header_len=%u, packet->tcp_payload_len=%u\n",
+	      packet->tcp_header_len, packet->tcp_payload_len);
+	DBGPR("  packet->mss=%u\n", packet->mss);
+
+	/* Update the number of packets that will ultimately be transmitted
+	 * along with the extra bytes for each extra packet
+	 */
+	packet->tx_packets = skb_shinfo(skb)->gso_segs;
+	packet->tx_bytes += (packet->tx_packets - 1) * packet->header_len;
+
+	return 0;
+}
+
+static bool xgbe_is_vxlan(struct sk_buff *skb)
+{
+	if (!skb->encapsulation)
+		return false;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return false;
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		if (ip_hdr(skb)->protocol != IPPROTO_UDP)
+			return false;
+		break;
+
+	case htons(ETH_P_IPV6):
+		if (ipv6_hdr(skb)->nexthdr != IPPROTO_UDP)
+			return false;
+		break;
+
+	default:
+		return false;
+	}
+
+	if (skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
+	    skb->inner_protocol != htons(ETH_P_TEB) ||
+	    (skb_inner_mac_header(skb) - skb_transport_header(skb) !=
+	     sizeof(struct udphdr) + sizeof(struct vxlanhdr)))
+		return false;
+
+	return true;
+}
+
+static int xgbe_is_tso(struct sk_buff *skb)
+{
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return 0;
+
+	if (!skb_is_gso(skb))
+		return 0;
+
+	DBGPR("  TSO packet to be processed\n");
+
+	return 1;
+}
+
+static void xgbe_packet_info(struct xgbe_prv_data *pdata,
+			     struct xgbe_ring *ring, struct sk_buff *skb,
+			     struct xgbe_packet_data *packet)
+{
+	skb_frag_t *frag;
+	unsigned int context_desc;
+	unsigned int len;
+	unsigned int i;
+
+	packet->skb = skb;
+
+	context_desc = 0;
+	packet->rdesc_count = 0;
+
+	packet->tx_packets = 1;
+	packet->tx_bytes = skb->len;
+
+	if (xgbe_is_tso(skb)) {
+		/* TSO requires an extra descriptor if mss is different */
+		if (skb_shinfo(skb)->gso_size != ring->tx.cur_mss) {
+			context_desc = 1;
+			packet->rdesc_count++;
+		}
+
+		/* TSO requires an extra descriptor for TSO header */
+		packet->rdesc_count++;
+
+		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
+			       TSO_ENABLE, 1);
+		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
+			       CSUM_ENABLE, 1);
+	} else if (skb->ip_summed == CHECKSUM_PARTIAL)
+		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
+			       CSUM_ENABLE, 1);
+
+	if (xgbe_is_vxlan(skb))
+		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
+			       VXLAN, 1);
+
+	if (skb_vlan_tag_present(skb)) {
+		/* VLAN requires an extra descriptor if tag is different */
+		if (skb_vlan_tag_get(skb) != ring->tx.cur_vlan_ctag)
+			/* We can share with the TSO context descriptor */
+			if (!context_desc) {
+				context_desc = 1;
+				packet->rdesc_count++;
+			}
+
+		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
+			       VLAN_CTAG, 1);
+	}
+
+	if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
+	    (pdata->tstamp_config.tx_type == HWTSTAMP_TX_ON))
+		XGMAC_SET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
+			       PTP, 1);
+
+	for (len = skb_headlen(skb); len;) {
+		packet->rdesc_count++;
+		len -= min_t(unsigned int, len, XGBE_TX_MAX_BUF_SIZE);
+	}
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		frag = &skb_shinfo(skb)->frags[i];
+		for (len = skb_frag_size(frag); len; ) {
+			packet->rdesc_count++;
+			len -= min_t(unsigned int, len, XGBE_TX_MAX_BUF_SIZE);
+		}
+	}
+}
+
+static int xgbe_open(struct net_device *netdev)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	int ret;
+
+	/* Create the various names based on netdev name */
+	snprintf(pdata->an_name, sizeof(pdata->an_name) - 1, "%s-pcs",
+		 netdev_name(netdev));
+
+	snprintf(pdata->ecc_name, sizeof(pdata->ecc_name) - 1, "%s-ecc",
+		 netdev_name(netdev));
+
+	snprintf(pdata->i2c_name, sizeof(pdata->i2c_name) - 1, "%s-i2c",
+		 netdev_name(netdev));
+
+	/* Create workqueues */
+	pdata->dev_workqueue =
+		create_singlethread_workqueue(netdev_name(netdev));
+	if (!pdata->dev_workqueue) {
+		netdev_err(netdev, "device workqueue creation failed\n");
+		return -ENOMEM;
+	}
+
+	pdata->an_workqueue =
+		create_singlethread_workqueue(pdata->an_name);
+	if (!pdata->an_workqueue) {
+		netdev_err(netdev, "phy workqueue creation failed\n");
+		ret = -ENOMEM;
+		goto err_dev_wq;
+	}
+
+	/* Reset the phy settings */
+	ret = xgbe_phy_reset(pdata);
+	if (ret)
+		goto err_an_wq;
+
+	/* Enable the clocks */
+	ret = clk_prepare_enable(pdata->sysclk);
+	if (ret) {
+		netdev_alert(netdev, "dma clk_prepare_enable failed\n");
+		goto err_an_wq;
+	}
+
+	ret = clk_prepare_enable(pdata->ptpclk);
+	if (ret) {
+		netdev_alert(netdev, "ptp clk_prepare_enable failed\n");
+		goto err_sysclk;
+	}
+
+	INIT_WORK(&pdata->service_work, xgbe_service);
+	INIT_WORK(&pdata->restart_work, xgbe_restart);
+	INIT_WORK(&pdata->stopdev_work, xgbe_stopdev);
+	INIT_WORK(&pdata->tx_tstamp_work, xgbe_tx_tstamp);
+
+	ret = xgbe_alloc_memory(pdata);
+	if (ret)
+		goto err_ptpclk;
+
+	ret = xgbe_start(pdata);
+	if (ret)
+		goto err_mem;
+
+	clear_bit(XGBE_DOWN, &pdata->dev_state);
+
+	return 0;
+
+err_mem:
+	xgbe_free_memory(pdata);
+
+err_ptpclk:
+	clk_disable_unprepare(pdata->ptpclk);
+
+err_sysclk:
+	clk_disable_unprepare(pdata->sysclk);
+
+err_an_wq:
+	destroy_workqueue(pdata->an_workqueue);
+
+err_dev_wq:
+	destroy_workqueue(pdata->dev_workqueue);
+
+	return ret;
+}
+
+static int xgbe_close(struct net_device *netdev)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+
+	/* Stop the device */
+	xgbe_stop(pdata);
+
+	xgbe_free_memory(pdata);
+
+	/* Disable the clocks */
+	clk_disable_unprepare(pdata->ptpclk);
+	clk_disable_unprepare(pdata->sysclk);
+
+	destroy_workqueue(pdata->an_workqueue);
+
+	destroy_workqueue(pdata->dev_workqueue);
+
+	set_bit(XGBE_DOWN, &pdata->dev_state);
+
+	return 0;
+}
+
+static netdev_tx_t xgbe_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_channel *channel;
+	struct xgbe_ring *ring;
+	struct xgbe_packet_data *packet;
+	struct netdev_queue *txq;
+	netdev_tx_t ret;
+
+	DBGPR("-->xgbe_xmit: skb->len = %d\n", skb->len);
+
+	channel = pdata->channel[skb->queue_mapping];
+	txq = netdev_get_tx_queue(netdev, channel->queue_index);
+	ring = channel->tx_ring;
+	packet = &ring->packet_data;
+
+	ret = NETDEV_TX_OK;
+
+	if (skb->len == 0) {
+		netif_err(pdata, tx_err, netdev,
+			  "empty skb received from stack\n");
+		dev_kfree_skb_any(skb);
+		goto tx_netdev_return;
+	}
+
+	/* Calculate preliminary packet info */
+	memset(packet, 0, sizeof(*packet));
+	xgbe_packet_info(pdata, ring, skb, packet);
+
+	/* Check that there are enough descriptors available */
+	ret = xgbe_maybe_stop_tx_queue(channel, ring, packet->rdesc_count);
+	if (ret)
+		goto tx_netdev_return;
+
+	ret = xgbe_prep_tso(skb, packet);
+	if (ret) {
+		netif_err(pdata, tx_err, netdev,
+			  "error processing TSO packet\n");
+		dev_kfree_skb_any(skb);
+		goto tx_netdev_return;
+	}
+	xgbe_prep_vlan(skb, packet);
+
+	if (!desc_if->map_tx_skb(channel, skb)) {
+		dev_kfree_skb_any(skb);
+		goto tx_netdev_return;
+	}
+
+	xgbe_prep_tx_tstamp(pdata, skb, packet);
+
+	/* Report on the actual number of bytes (to be) sent */
+	netdev_tx_sent_queue(txq, packet->tx_bytes);
+
+	/* Configure required descriptor fields for transmission */
+	hw_if->dev_xmit(channel);
+
+	if (netif_msg_pktdata(pdata))
+		xgbe_print_pkt(netdev, skb, true);
+
+	/* Stop the queue in advance if there may not be enough descriptors */
+	xgbe_maybe_stop_tx_queue(channel, ring, XGBE_TX_MAX_DESCS);
+
+	ret = NETDEV_TX_OK;
+
+tx_netdev_return:
+	return ret;
+}
+
+static void xgbe_set_rx_mode(struct net_device *netdev)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+
+	DBGPR("-->xgbe_set_rx_mode\n");
+
+	hw_if->config_rx_mode(pdata);
+
+	DBGPR("<--xgbe_set_rx_mode\n");
+}
+
+static int xgbe_set_mac_address(struct net_device *netdev, void *addr)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct sockaddr *saddr = addr;
+
+	DBGPR("-->xgbe_set_mac_address\n");
+
+	if (!is_valid_ether_addr(saddr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	eth_hw_addr_set(netdev, saddr->sa_data);
+
+	hw_if->set_mac_address(pdata, netdev->dev_addr);
+
+	DBGPR("<--xgbe_set_mac_address\n");
+
+	return 0;
+}
+
+static int xgbe_ioctl(struct net_device *netdev, struct ifreq *ifreq, int cmd)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	int ret;
+
+	switch (cmd) {
+	case SIOCGHWTSTAMP:
+		ret = xgbe_get_hwtstamp_settings(pdata, ifreq);
+		break;
+
+	case SIOCSHWTSTAMP:
+		ret = xgbe_set_hwtstamp_settings(pdata, ifreq);
+		break;
+
+	default:
+		ret = -EOPNOTSUPP;
+	}
+
+	return ret;
+}
+
+static int xgbe_change_mtu(struct net_device *netdev, int mtu)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	int ret;
+
+	DBGPR("-->xgbe_change_mtu\n");
+
+	ret = xgbe_calc_rx_buf_size(netdev, mtu);
+	if (ret < 0)
+		return ret;
+
+	pdata->rx_buf_size = ret;
+	netdev->mtu = mtu;
+
+	xgbe_restart_dev(pdata);
+
+	DBGPR("<--xgbe_change_mtu\n");
+
+	return 0;
+}
+
+static void xgbe_tx_timeout(struct net_device *netdev, unsigned int txqueue)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+
+	netdev_warn(netdev, "tx timeout, device restarting\n");
+	schedule_work(&pdata->restart_work);
+}
+
+static void xgbe_get_stats64(struct net_device *netdev,
+			     struct rtnl_link_stats64 *s)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_mmc_stats *pstats = &pdata->mmc_stats;
+
+	DBGPR("-->%s\n", __func__);
+
+	pdata->hw_if.read_mmc_stats(pdata);
+
+	s->rx_packets = pstats->rxframecount_gb;
+	s->rx_bytes = pstats->rxoctetcount_gb;
+	s->rx_errors = pstats->rxframecount_gb -
+		       pstats->rxbroadcastframes_g -
+		       pstats->rxmulticastframes_g -
+		       pstats->rxunicastframes_g;
+	s->multicast = pstats->rxmulticastframes_g;
+	s->rx_length_errors = pstats->rxlengtherror;
+	s->rx_crc_errors = pstats->rxcrcerror;
+	s->rx_fifo_errors = pstats->rxfifooverflow;
+
+	s->tx_packets = pstats->txframecount_gb;
+	s->tx_bytes = pstats->txoctetcount_gb;
+	s->tx_errors = pstats->txframecount_gb - pstats->txframecount_g;
+	s->tx_dropped = netdev->stats.tx_dropped;
+
+	DBGPR("<--%s\n", __func__);
+}
+
+static int xgbe_vlan_rx_add_vid(struct net_device *netdev, __be16 proto,
+				u16 vid)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+
+	DBGPR("-->%s\n", __func__);
+
+	set_bit(vid, pdata->active_vlans);
+	hw_if->update_vlan_hash_table(pdata);
+
+	DBGPR("<--%s\n", __func__);
+
+	return 0;
+}
+
+static int xgbe_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto,
+				 u16 vid)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+
+	DBGPR("-->%s\n", __func__);
+
+	clear_bit(vid, pdata->active_vlans);
+	hw_if->update_vlan_hash_table(pdata);
+
+	DBGPR("<--%s\n", __func__);
+
+	return 0;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void xgbe_poll_controller(struct net_device *netdev)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_channel *channel;
+	unsigned int i;
+
+	DBGPR("-->xgbe_poll_controller\n");
+
+	if (pdata->per_channel_irq) {
+		for (i = 0; i < pdata->channel_count; i++) {
+			channel = pdata->channel[i];
+			xgbe_dma_isr(channel->dma_irq, channel);
+		}
+	} else {
+		disable_irq(pdata->dev_irq);
+		xgbe_isr(pdata->dev_irq, pdata);
+		enable_irq(pdata->dev_irq);
+	}
+
+	DBGPR("<--xgbe_poll_controller\n");
+}
+#endif /* End CONFIG_NET_POLL_CONTROLLER */
+
+static int xgbe_setup_tc(struct net_device *netdev, enum tc_setup_type type,
+			 void *type_data)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct tc_mqprio_qopt *mqprio = type_data;
+	u8 tc;
+
+	if (type != TC_SETUP_QDISC_MQPRIO)
+		return -EOPNOTSUPP;
+
+	mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
+	tc = mqprio->num_tc;
+
+	if (tc > pdata->hw_feat.tc_cnt)
+		return -EINVAL;
+
+	pdata->num_tcs = tc;
+	pdata->hw_if.config_tc(pdata);
+
+	return 0;
+}
+
+static netdev_features_t xgbe_fix_features(struct net_device *netdev,
+					   netdev_features_t features)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	netdev_features_t vxlan_base;
+
+	vxlan_base = NETIF_F_GSO_UDP_TUNNEL | NETIF_F_RX_UDP_TUNNEL_PORT;
+
+	if (!pdata->hw_feat.vxn)
+		return features;
+
+	/* VXLAN CSUM requires VXLAN base */
+	if ((features & NETIF_F_GSO_UDP_TUNNEL_CSUM) &&
+	    !(features & NETIF_F_GSO_UDP_TUNNEL)) {
+		netdev_notice(netdev,
+			      "forcing tx udp tunnel support\n");
+		features |= NETIF_F_GSO_UDP_TUNNEL;
+	}
+
+	/* Can't do one without doing the other */
+	if ((features & vxlan_base) != vxlan_base) {
+		netdev_notice(netdev,
+			      "forcing both tx and rx udp tunnel support\n");
+		features |= vxlan_base;
+	}
+
+	if (features & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)) {
+		if (!(features & NETIF_F_GSO_UDP_TUNNEL_CSUM)) {
+			netdev_notice(netdev,
+				      "forcing tx udp tunnel checksumming on\n");
+			features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
+		}
+	} else {
+		if (features & NETIF_F_GSO_UDP_TUNNEL_CSUM) {
+			netdev_notice(netdev,
+				      "forcing tx udp tunnel checksumming off\n");
+			features &= ~NETIF_F_GSO_UDP_TUNNEL_CSUM;
+		}
+	}
+
+	return features;
+}
+
+static int xgbe_set_features(struct net_device *netdev,
+			     netdev_features_t features)
+{
+	struct xgbe_prv_data *pdata = netdev_priv(netdev);
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	netdev_features_t rxhash, rxcsum, rxvlan, rxvlan_filter;
+	int ret = 0;
+
+	rxhash = pdata->netdev_features & NETIF_F_RXHASH;
+	rxcsum = pdata->netdev_features & NETIF_F_RXCSUM;
+	rxvlan = pdata->netdev_features & NETIF_F_HW_VLAN_CTAG_RX;
+	rxvlan_filter = pdata->netdev_features & NETIF_F_HW_VLAN_CTAG_FILTER;
+
+	if ((features & NETIF_F_RXHASH) && !rxhash)
+		ret = hw_if->enable_rss(pdata);
+	else if (!(features & NETIF_F_RXHASH) && rxhash)
+		ret = hw_if->disable_rss(pdata);
+	if (ret)
+		return ret;
+
+	if ((features & NETIF_F_RXCSUM) && !rxcsum)
+		hw_if->enable_rx_csum(pdata);
+	else if (!(features & NETIF_F_RXCSUM) && rxcsum)
+		hw_if->disable_rx_csum(pdata);
+
+	if ((features & NETIF_F_HW_VLAN_CTAG_RX) && !rxvlan)
+		hw_if->enable_rx_vlan_stripping(pdata);
+	else if (!(features & NETIF_F_HW_VLAN_CTAG_RX) && rxvlan)
+		hw_if->disable_rx_vlan_stripping(pdata);
+
+	if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) && !rxvlan_filter)
+		hw_if->enable_rx_vlan_filtering(pdata);
+	else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) && rxvlan_filter)
+		hw_if->disable_rx_vlan_filtering(pdata);
+
+	pdata->netdev_features = features;
+
+	DBGPR("<--xgbe_set_features\n");
+
+	return 0;
+}
+
+static netdev_features_t xgbe_features_check(struct sk_buff *skb,
+					     struct net_device *netdev,
+					     netdev_features_t features)
+{
+	features = vlan_features_check(skb, features);
+	features = vxlan_features_check(skb, features);
+
+	return features;
+}
+
+static const struct net_device_ops xgbe_netdev_ops = {
+	.ndo_open		= xgbe_open,
+	.ndo_stop		= xgbe_close,
+	.ndo_start_xmit		= xgbe_xmit,
+	.ndo_set_rx_mode	= xgbe_set_rx_mode,
+	.ndo_set_mac_address	= xgbe_set_mac_address,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_eth_ioctl		= xgbe_ioctl,
+	.ndo_change_mtu		= xgbe_change_mtu,
+	.ndo_tx_timeout		= xgbe_tx_timeout,
+	.ndo_get_stats64	= xgbe_get_stats64,
+	.ndo_vlan_rx_add_vid	= xgbe_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid	= xgbe_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= xgbe_poll_controller,
+#endif
+	.ndo_setup_tc		= xgbe_setup_tc,
+	.ndo_fix_features	= xgbe_fix_features,
+	.ndo_set_features	= xgbe_set_features,
+	.ndo_features_check	= xgbe_features_check,
+};
+
+const struct net_device_ops *xgbe_get_netdev_ops(void)
+{
+	return &xgbe_netdev_ops;
+}
+
+static void xgbe_rx_refresh(struct xgbe_channel *channel)
+{
+	struct xgbe_prv_data *pdata = channel->pdata;
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_ring *ring = channel->rx_ring;
+	struct xgbe_ring_data *rdata;
+
+	while (ring->dirty != ring->cur) {
+		rdata = XGBE_GET_DESC_DATA(ring, ring->dirty);
+
+		/* Reset rdata values */
+		desc_if->unmap_rdata(pdata, rdata);
+
+		if (desc_if->map_rx_buffer(pdata, ring, rdata))
+			break;
+
+		hw_if->rx_desc_reset(pdata, rdata, ring->dirty);
+
+		ring->dirty++;
+	}
+
+	/* Make sure everything is written before the register write */
+	wmb();
+
+	/* Update the Rx Tail Pointer Register with address of
+	 * the last cleaned entry */
+	rdata = XGBE_GET_DESC_DATA(ring, ring->dirty - 1);
+	XGMAC_DMA_IOWRITE(channel, DMA_CH_RDTR_LO,
+			  lower_32_bits(rdata->rdesc_dma));
+}
+
+static struct sk_buff *xgbe_create_skb(struct xgbe_prv_data *pdata,
+				       struct napi_struct *napi,
+				       struct xgbe_ring_data *rdata,
+				       unsigned int len)
+{
+	struct sk_buff *skb;
+	u8 *packet;
+
+	skb = napi_alloc_skb(napi, rdata->rx.hdr.dma_len);
+	if (!skb)
+		return NULL;
+
+	/* Pull in the header buffer which may contain just the header
+	 * or the header plus data
+	 */
+	dma_sync_single_range_for_cpu(pdata->dev, rdata->rx.hdr.dma_base,
+				      rdata->rx.hdr.dma_off,
+				      rdata->rx.hdr.dma_len, DMA_FROM_DEVICE);
+
+	packet = page_address(rdata->rx.hdr.pa.pages) +
+		 rdata->rx.hdr.pa.pages_offset;
+	skb_copy_to_linear_data(skb, packet, len);
+	skb_put(skb, len);
+
+	return skb;
+}
+
+static unsigned int xgbe_rx_buf1_len(struct xgbe_ring_data *rdata,
+				     struct xgbe_packet_data *packet)
+{
+	/* Always zero if not the first descriptor */
+	if (!XGMAC_GET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES, FIRST))
+		return 0;
+
+	/* First descriptor with split header, return header length */
+	if (rdata->rx.hdr_len)
+		return rdata->rx.hdr_len;
+
+	/* First descriptor but not the last descriptor and no split header,
+	 * so the full buffer was used
+	 */
+	if (!XGMAC_GET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES, LAST))
+		return rdata->rx.hdr.dma_len;
+
+	/* First descriptor and last descriptor and no split header, so
+	 * calculate how much of the buffer was used
+	 */
+	return min_t(unsigned int, rdata->rx.hdr.dma_len, rdata->rx.len);
+}
+
+static unsigned int xgbe_rx_buf2_len(struct xgbe_ring_data *rdata,
+				     struct xgbe_packet_data *packet,
+				     unsigned int len)
+{
+	/* Always the full buffer if not the last descriptor */
+	if (!XGMAC_GET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES, LAST))
+		return rdata->rx.buf.dma_len;
+
+	/* Last descriptor so calculate how much of the buffer was used
+	 * for the last bit of data
+	 */
+	return rdata->rx.len - len;
+}
+
+static int xgbe_tx_poll(struct xgbe_channel *channel)
+{
+	struct xgbe_prv_data *pdata = channel->pdata;
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_ring *ring = channel->tx_ring;
+	struct xgbe_ring_data *rdata;
+	struct xgbe_ring_desc *rdesc;
+	struct net_device *netdev = pdata->netdev;
+	struct netdev_queue *txq;
+	int processed = 0;
+	unsigned int tx_packets = 0, tx_bytes = 0;
+	unsigned int cur;
+
+	DBGPR("-->xgbe_tx_poll\n");
+
+	/* Nothing to do if there isn't a Tx ring for this channel */
+	if (!ring)
+		return 0;
+
+	cur = ring->cur;
+
+	/* Be sure we get ring->cur before accessing descriptor data */
+	smp_rmb();
+
+	txq = netdev_get_tx_queue(netdev, channel->queue_index);
+
+	while ((processed < XGBE_TX_DESC_MAX_PROC) &&
+	       (ring->dirty != cur)) {
+		rdata = XGBE_GET_DESC_DATA(ring, ring->dirty);
+		rdesc = rdata->rdesc;
+
+		if (!hw_if->tx_complete(rdesc))
+			break;
+
+		/* Make sure descriptor fields are read after reading the OWN
+		 * bit */
+		dma_rmb();
+
+		if (netif_msg_tx_done(pdata))
+			xgbe_dump_tx_desc(pdata, ring, ring->dirty, 1, 0);
+
+		if (hw_if->is_last_desc(rdesc)) {
+			tx_packets += rdata->tx.packets;
+			tx_bytes += rdata->tx.bytes;
+		}
+
+		/* Free the SKB and reset the descriptor for re-use */
+		desc_if->unmap_rdata(pdata, rdata);
+		hw_if->tx_desc_reset(rdata);
+
+		processed++;
+		ring->dirty++;
+	}
+
+	if (!processed)
+		return 0;
+
+	netdev_tx_completed_queue(txq, tx_packets, tx_bytes);
+
+	if ((ring->tx.queue_stopped == 1) &&
+	    (xgbe_tx_avail_desc(ring) > XGBE_TX_DESC_MIN_FREE)) {
+		ring->tx.queue_stopped = 0;
+		netif_tx_wake_queue(txq);
+	}
+
+	DBGPR("<--xgbe_tx_poll: processed=%d\n", processed);
+
+	return processed;
+}
+
+static int xgbe_rx_poll(struct xgbe_channel *channel, int budget)
+{
+	struct xgbe_prv_data *pdata = channel->pdata;
+	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_ring *ring = channel->rx_ring;
+	struct xgbe_ring_data *rdata;
+	struct xgbe_packet_data *packet;
+	struct net_device *netdev = pdata->netdev;
+	struct napi_struct *napi;
+	struct sk_buff *skb;
+	struct skb_shared_hwtstamps *hwtstamps;
+	unsigned int last, error, context_next, context;
+	unsigned int len, buf1_len, buf2_len, max_len;
+	unsigned int received = 0;
+	int packet_count = 0;
+
+	DBGPR("-->xgbe_rx_poll: budget=%d\n", budget);
+
+	/* Nothing to do if there isn't a Rx ring for this channel */
+	if (!ring)
+		return 0;
+
+	last = 0;
+	context_next = 0;
+
+	napi = (pdata->per_channel_irq) ? &channel->napi : &pdata->napi;
+
+	rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
+	packet = &ring->packet_data;
+	while (packet_count < budget) {
+		DBGPR("  cur = %d\n", ring->cur);
+
+		/* First time in loop see if we need to restore state */
+		if (!received && rdata->state_saved) {
+			skb = rdata->state.skb;
+			error = rdata->state.error;
+			len = rdata->state.len;
+		} else {
+			memset(packet, 0, sizeof(*packet));
+			skb = NULL;
+			error = 0;
+			len = 0;
+		}
+
+read_again:
+		rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
+
+		if (xgbe_rx_dirty_desc(ring) > (XGBE_RX_DESC_CNT >> 3))
+			xgbe_rx_refresh(channel);
+
+		if (hw_if->dev_read(channel))
+			break;
+
+		received++;
+		ring->cur++;
+
+		last = XGMAC_GET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
+				      LAST);
+		context_next = XGMAC_GET_BITS(packet->attributes,
+					      RX_PACKET_ATTRIBUTES,
+					      CONTEXT_NEXT);
+		context = XGMAC_GET_BITS(packet->attributes,
+					 RX_PACKET_ATTRIBUTES,
+					 CONTEXT);
+
+		/* Earlier error, just drain the remaining data */
+		if ((!last || context_next) && error)
+			goto read_again;
+
+		if (error || packet->errors) {
+			if (packet->errors)
+				netif_err(pdata, rx_err, netdev,
+					  "error in received packet\n");
+			dev_kfree_skb(skb);
+			goto next_packet;
+		}
+
+		if (!context) {
+			/* Get the data length in the descriptor buffers */
+			buf1_len = xgbe_rx_buf1_len(rdata, packet);
+			len += buf1_len;
+			buf2_len = xgbe_rx_buf2_len(rdata, packet, len);
+			len += buf2_len;
+
+			if (buf2_len > rdata->rx.buf.dma_len) {
+				/* Hardware inconsistency within the descriptors
+				 * that has resulted in a length underflow.
+				 */
+				error = 1;
+				goto skip_data;
+			}
+
+			if (!skb) {
+				skb = xgbe_create_skb(pdata, napi, rdata,
+						      buf1_len);
+				if (!skb) {
+					error = 1;
+					goto skip_data;
+				}
+			}
+
+			if (buf2_len) {
+				dma_sync_single_range_for_cpu(pdata->dev,
+							rdata->rx.buf.dma_base,
+							rdata->rx.buf.dma_off,
+							rdata->rx.buf.dma_len,
+							DMA_FROM_DEVICE);
+
+				skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
+						rdata->rx.buf.pa.pages,
+						rdata->rx.buf.pa.pages_offset,
+						buf2_len,
+						rdata->rx.buf.dma_len);
+				rdata->rx.buf.pa.pages = NULL;
+			}
+		}
+
+skip_data:
+		if (!last || context_next)
+			goto read_again;
+
+		if (!skb || error) {
+			dev_kfree_skb(skb);
+			goto next_packet;
+		}
+
+		/* Be sure we don't exceed the configured MTU */
+		max_len = netdev->mtu + ETH_HLEN;
+		if (!(netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
+		    (skb->protocol == htons(ETH_P_8021Q)))
+			max_len += VLAN_HLEN;
+
+		if (skb->len > max_len) {
+			netif_err(pdata, rx_err, netdev,
+				  "packet length exceeds configured MTU\n");
+			dev_kfree_skb(skb);
+			goto next_packet;
+		}
+
+		if (netif_msg_pktdata(pdata))
+			xgbe_print_pkt(netdev, skb, false);
+
+		skb_checksum_none_assert(skb);
+		if (XGMAC_GET_BITS(packet->attributes,
+				   RX_PACKET_ATTRIBUTES, CSUM_DONE))
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+		if (XGMAC_GET_BITS(packet->attributes,
+				   RX_PACKET_ATTRIBUTES, TNP)) {
+			skb->encapsulation = 1;
+
+			if (XGMAC_GET_BITS(packet->attributes,
+					   RX_PACKET_ATTRIBUTES, TNPCSUM_DONE))
+				skb->csum_level = 1;
+		}
+
+		if (XGMAC_GET_BITS(packet->attributes,
+				   RX_PACKET_ATTRIBUTES, VLAN_CTAG))
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+					       packet->vlan_ctag);
+
+		if (XGMAC_GET_BITS(packet->attributes,
+				   RX_PACKET_ATTRIBUTES, RX_TSTAMP)) {
+			u64 nsec;
+
+			nsec = timecounter_cyc2time(&pdata->tstamp_tc,
+						    packet->rx_tstamp);
+			hwtstamps = skb_hwtstamps(skb);
+			hwtstamps->hwtstamp = ns_to_ktime(nsec);
+		}
+
+		if (XGMAC_GET_BITS(packet->attributes,
+				   RX_PACKET_ATTRIBUTES, RSS_HASH))
+			skb_set_hash(skb, packet->rss_hash,
+				     packet->rss_hash_type);
+
+		skb->dev = netdev;
+		skb->protocol = eth_type_trans(skb, netdev);
+		skb_record_rx_queue(skb, channel->queue_index);
+
+		napi_gro_receive(napi, skb);
+
+next_packet:
+		packet_count++;
+	}
+
+	/* Check if we need to save state before leaving */
+	if (received && (!last || context_next)) {
+		rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
+		rdata->state_saved = 1;
+		rdata->state.skb = skb;
+		rdata->state.len = len;
+		rdata->state.error = error;
+	}
+
+	DBGPR("<--xgbe_rx_poll: packet_count = %d\n", packet_count);
+
+	return packet_count;
+}
+
+static int xgbe_one_poll(struct napi_struct *napi, int budget)
+{
+	struct xgbe_channel *channel = container_of(napi, struct xgbe_channel,
+						    napi);
+	struct xgbe_prv_data *pdata = channel->pdata;
+	int processed = 0;
+
+	DBGPR("-->xgbe_one_poll: budget=%d\n", budget);
+
+	/* Cleanup Tx ring first */
+	xgbe_tx_poll(channel);
+
+	/* Process Rx ring next */
+	processed = xgbe_rx_poll(channel, budget);
+
+	/* If we processed everything, we are done */
+	if ((processed < budget) && napi_complete_done(napi, processed)) {
+		/* Enable Tx and Rx interrupts */
+		if (pdata->channel_irq_mode)
+			xgbe_enable_rx_tx_int(pdata, channel);
+		else
+			enable_irq(channel->dma_irq);
+	}
+
+	DBGPR("<--xgbe_one_poll: received = %d\n", processed);
+
+	return processed;
+}
+
+static int xgbe_all_poll(struct napi_struct *napi, int budget)
+{
+	struct xgbe_prv_data *pdata = container_of(napi, struct xgbe_prv_data,
+						   napi);
+	struct xgbe_channel *channel;
+	int ring_budget;
+	int processed, last_processed;
+	unsigned int i;
+
+	DBGPR("-->xgbe_all_poll: budget=%d\n", budget);
+
+	processed = 0;
+	ring_budget = budget / pdata->rx_ring_count;
+	do {
+		last_processed = processed;
+
+		for (i = 0; i < pdata->channel_count; i++) {
+			channel = pdata->channel[i];
+
+			/* Cleanup Tx ring first */
+			xgbe_tx_poll(channel);
+
+			/* Process Rx ring next */
+			if (ring_budget > (budget - processed))
+				ring_budget = budget - processed;
+			processed += xgbe_rx_poll(channel, ring_budget);
+		}
+	} while ((processed < budget) && (processed != last_processed));
+
+	/* If we processed everything, we are done */
+	if ((processed < budget) && napi_complete_done(napi, processed)) {
+		/* Enable Tx and Rx interrupts */
+		xgbe_enable_rx_tx_ints(pdata);
+	}
+
+	DBGPR("<--xgbe_all_poll: received = %d\n", processed);
+
+	return processed;
+}
+
+void xgbe_dump_tx_desc(struct xgbe_prv_data *pdata, struct xgbe_ring *ring,
+		       unsigned int idx, unsigned int count, unsigned int flag)
+{
+	struct xgbe_ring_data *rdata;
+	struct xgbe_ring_desc *rdesc;
+
+	while (count--) {
+		rdata = XGBE_GET_DESC_DATA(ring, idx);
+		rdesc = rdata->rdesc;
+		netdev_dbg(pdata->netdev,
+			   "TX_NORMAL_DESC[%d %s] = %08x:%08x:%08x:%08x\n", idx,
+			   (flag == 1) ? "QUEUED FOR TX" : "TX BY DEVICE",
+			   le32_to_cpu(rdesc->desc0),
+			   le32_to_cpu(rdesc->desc1),
+			   le32_to_cpu(rdesc->desc2),
+			   le32_to_cpu(rdesc->desc3));
+		idx++;
+	}
+}
+
+void xgbe_dump_rx_desc(struct xgbe_prv_data *pdata, struct xgbe_ring *ring,
+		       unsigned int idx)
+{
+	struct xgbe_ring_data *rdata;
+	struct xgbe_ring_desc *rdesc;
+
+	rdata = XGBE_GET_DESC_DATA(ring, idx);
+	rdesc = rdata->rdesc;
+	netdev_dbg(pdata->netdev,
+		   "RX_NORMAL_DESC[%d RX BY DEVICE] = %08x:%08x:%08x:%08x\n",
+		   idx, le32_to_cpu(rdesc->desc0), le32_to_cpu(rdesc->desc1),
+		   le32_to_cpu(rdesc->desc2), le32_to_cpu(rdesc->desc3));
+}
+
+void xgbe_print_pkt(struct net_device *netdev, struct sk_buff *skb, bool tx_rx)
+{
+	struct ethhdr *eth = (struct ethhdr *)skb->data;
+	unsigned char buffer[128];
+	unsigned int i;
+
+	netdev_dbg(netdev, "\n************** SKB dump ****************\n");
+
+	netdev_dbg(netdev, "%s packet of %d bytes\n",
+		   (tx_rx ? "TX" : "RX"), skb->len);
+
+	netdev_dbg(netdev, "Dst MAC addr: %pM\n", eth->h_dest);
+	netdev_dbg(netdev, "Src MAC addr: %pM\n", eth->h_source);
+	netdev_dbg(netdev, "Protocol: %#06x\n", ntohs(eth->h_proto));
+
+	for (i = 0; i < skb->len; i += 32) {
+		unsigned int len = min(skb->len - i, 32U);
+
+		hex_dump_to_buffer(&skb->data[i], len, 32, 1,
+				   buffer, sizeof(buffer), false);
+		netdev_dbg(netdev, "  %#06x: %s\n", i, buffer);
+	}
+
+	netdev_dbg(netdev, "\n************** SKB dump ****************\n");
+}