broadcom: Move the Broadcom drivers

Moves the drivers for Broadcom devices into
drivers/net/ethernet/broadcom/ and the necessary Kconfig and Makefile
changes.

CC: Eilon Greenstein <eilong@broadcom.com>
CC: Michael Chan <mchan@broadcom.com>
CC: Matt Carlson <mcarlson@broadcom.com>
CC: Gary Zambrano <zambrano@broadcom.com>
CC: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1966 deletions

diff --git a/drivers/net/bcm63xx_enet.c b/drivers/net/bcm63xx_enet.c
deleted file mode 100644
index 1d9b9858067..00000000000
--- a/drivers/net/bcm63xx_enet.c
+++ /dev/null
@@ -1,1966 +0,0 @@
-/*
- * Driver for BCM963xx builtin Ethernet mac
- *
- * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
- *
- * This program is free software; you can redistribute it 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 program 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, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/clk.h>
-#include <linux/etherdevice.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/ethtool.h>
-#include <linux/crc32.h>
-#include <linux/err.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/if_vlan.h>
-
-#include <bcm63xx_dev_enet.h>
-#include "bcm63xx_enet.h"
-
-static char bcm_enet_driver_name[] = "bcm63xx_enet";
-static char bcm_enet_driver_version[] = "1.0";
-
-static int copybreak __read_mostly = 128;
-module_param(copybreak, int, 0);
-MODULE_PARM_DESC(copybreak, "Receive copy threshold");
-
-/* io memory shared between all devices */
-static void __iomem *bcm_enet_shared_base;
-
-/*
- * io helpers to access mac registers
- */
-static inline u32 enet_readl(struct bcm_enet_priv *priv, u32 off)
-{
-	return bcm_readl(priv->base + off);
-}
-
-static inline void enet_writel(struct bcm_enet_priv *priv,
-			       u32 val, u32 off)
-{
-	bcm_writel(val, priv->base + off);
-}
-
-/*
- * io helpers to access shared registers
- */
-static inline u32 enet_dma_readl(struct bcm_enet_priv *priv, u32 off)
-{
-	return bcm_readl(bcm_enet_shared_base + off);
-}
-
-static inline void enet_dma_writel(struct bcm_enet_priv *priv,
-				       u32 val, u32 off)
-{
-	bcm_writel(val, bcm_enet_shared_base + off);
-}
-
-/*
- * write given data into mii register and wait for transfer to end
- * with timeout (average measured transfer time is 25us)
- */
-static int do_mdio_op(struct bcm_enet_priv *priv, unsigned int data)
-{
-	int limit;
-
-	/* make sure mii interrupt status is cleared */
-	enet_writel(priv, ENET_IR_MII, ENET_IR_REG);
-
-	enet_writel(priv, data, ENET_MIIDATA_REG);
-	wmb();
-
-	/* busy wait on mii interrupt bit, with timeout */
-	limit = 1000;
-	do {
-		if (enet_readl(priv, ENET_IR_REG) & ENET_IR_MII)
-			break;
-		udelay(1);
-	} while (limit-- > 0);
-
-	return (limit < 0) ? 1 : 0;
-}
-
-/*
- * MII internal read callback
- */
-static int bcm_enet_mdio_read(struct bcm_enet_priv *priv, int mii_id,
-			      int regnum)
-{
-	u32 tmp, val;
-
-	tmp = regnum << ENET_MIIDATA_REG_SHIFT;
-	tmp |= 0x2 << ENET_MIIDATA_TA_SHIFT;
-	tmp |= mii_id << ENET_MIIDATA_PHYID_SHIFT;
-	tmp |= ENET_MIIDATA_OP_READ_MASK;
-
-	if (do_mdio_op(priv, tmp))
-		return -1;
-
-	val = enet_readl(priv, ENET_MIIDATA_REG);
-	val &= 0xffff;
-	return val;
-}
-
-/*
- * MII internal write callback
- */
-static int bcm_enet_mdio_write(struct bcm_enet_priv *priv, int mii_id,
-			       int regnum, u16 value)
-{
-	u32 tmp;
-
-	tmp = (value & 0xffff) << ENET_MIIDATA_DATA_SHIFT;
-	tmp |= 0x2 << ENET_MIIDATA_TA_SHIFT;
-	tmp |= regnum << ENET_MIIDATA_REG_SHIFT;
-	tmp |= mii_id << ENET_MIIDATA_PHYID_SHIFT;
-	tmp |= ENET_MIIDATA_OP_WRITE_MASK;
-
-	(void)do_mdio_op(priv, tmp);
-	return 0;
-}
-
-/*
- * MII read callback from phylib
- */
-static int bcm_enet_mdio_read_phylib(struct mii_bus *bus, int mii_id,
-				     int regnum)
-{
-	return bcm_enet_mdio_read(bus->priv, mii_id, regnum);
-}
-
-/*
- * MII write callback from phylib
- */
-static int bcm_enet_mdio_write_phylib(struct mii_bus *bus, int mii_id,
-				      int regnum, u16 value)
-{
-	return bcm_enet_mdio_write(bus->priv, mii_id, regnum, value);
-}
-
-/*
- * MII read callback from mii core
- */
-static int bcm_enet_mdio_read_mii(struct net_device *dev, int mii_id,
-				  int regnum)
-{
-	return bcm_enet_mdio_read(netdev_priv(dev), mii_id, regnum);
-}
-
-/*
- * MII write callback from mii core
- */
-static void bcm_enet_mdio_write_mii(struct net_device *dev, int mii_id,
-				    int regnum, int value)
-{
-	bcm_enet_mdio_write(netdev_priv(dev), mii_id, regnum, value);
-}
-
-/*
- * refill rx queue
- */
-static int bcm_enet_refill_rx(struct net_device *dev)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-
-	while (priv->rx_desc_count < priv->rx_ring_size) {
-		struct bcm_enet_desc *desc;
-		struct sk_buff *skb;
-		dma_addr_t p;
-		int desc_idx;
-		u32 len_stat;
-
-		desc_idx = priv->rx_dirty_desc;
-		desc = &priv->rx_desc_cpu[desc_idx];
-
-		if (!priv->rx_skb[desc_idx]) {
-			skb = netdev_alloc_skb(dev, priv->rx_skb_size);
-			if (!skb)
-				break;
-			priv->rx_skb[desc_idx] = skb;
-
-			p = dma_map_single(&priv->pdev->dev, skb->data,
-					   priv->rx_skb_size,
-					   DMA_FROM_DEVICE);
-			desc->address = p;
-		}
-
-		len_stat = priv->rx_skb_size << DMADESC_LENGTH_SHIFT;
-		len_stat |= DMADESC_OWNER_MASK;
-		if (priv->rx_dirty_desc == priv->rx_ring_size - 1) {
-			len_stat |= DMADESC_WRAP_MASK;
-			priv->rx_dirty_desc = 0;
-		} else {
-			priv->rx_dirty_desc++;
-		}
-		wmb();
-		desc->len_stat = len_stat;
-
-		priv->rx_desc_count++;
-
-		/* tell dma engine we allocated one buffer */
-		enet_dma_writel(priv, 1, ENETDMA_BUFALLOC_REG(priv->rx_chan));
-	}
-
-	/* If rx ring is still empty, set a timer to try allocating
-	 * again at a later time. */
-	if (priv->rx_desc_count == 0 && netif_running(dev)) {
-		dev_warn(&priv->pdev->dev, "unable to refill rx ring\n");
-		priv->rx_timeout.expires = jiffies + HZ;
-		add_timer(&priv->rx_timeout);
-	}
-
-	return 0;
-}
-
-/*
- * timer callback to defer refill rx queue in case we're OOM
- */
-static void bcm_enet_refill_rx_timer(unsigned long data)
-{
-	struct net_device *dev;
-	struct bcm_enet_priv *priv;
-
-	dev = (struct net_device *)data;
-	priv = netdev_priv(dev);
-
-	spin_lock(&priv->rx_lock);
-	bcm_enet_refill_rx((struct net_device *)data);
-	spin_unlock(&priv->rx_lock);
-}
-
-/*
- * extract packet from rx queue
- */
-static int bcm_enet_receive_queue(struct net_device *dev, int budget)
-{
-	struct bcm_enet_priv *priv;
-	struct device *kdev;
-	int processed;
-
-	priv = netdev_priv(dev);
-	kdev = &priv->pdev->dev;
-	processed = 0;
-
-	/* don't scan ring further than number of refilled
-	 * descriptor */
-	if (budget > priv->rx_desc_count)
-		budget = priv->rx_desc_count;
-
-	do {
-		struct bcm_enet_desc *desc;
-		struct sk_buff *skb;
-		int desc_idx;
-		u32 len_stat;
-		unsigned int len;
-
-		desc_idx = priv->rx_curr_desc;
-		desc = &priv->rx_desc_cpu[desc_idx];
-
-		/* make sure we actually read the descriptor status at
-		 * each loop */
-		rmb();
-
-		len_stat = desc->len_stat;
-
-		/* break if dma ownership belongs to hw */
-		if (len_stat & DMADESC_OWNER_MASK)
-			break;
-
-		processed++;
-		priv->rx_curr_desc++;
-		if (priv->rx_curr_desc == priv->rx_ring_size)
-			priv->rx_curr_desc = 0;
-		priv->rx_desc_count--;
-
-		/* if the packet does not have start of packet _and_
-		 * end of packet flag set, then just recycle it */
-		if ((len_stat & DMADESC_ESOP_MASK) != DMADESC_ESOP_MASK) {
-			dev->stats.rx_dropped++;
-			continue;
-		}
-
-		/* recycle packet if it's marked as bad */
-		if (unlikely(len_stat & DMADESC_ERR_MASK)) {
-			dev->stats.rx_errors++;
-
-			if (len_stat & DMADESC_OVSIZE_MASK)
-				dev->stats.rx_length_errors++;
-			if (len_stat & DMADESC_CRC_MASK)
-				dev->stats.rx_crc_errors++;
-			if (len_stat & DMADESC_UNDER_MASK)
-				dev->stats.rx_frame_errors++;
-			if (len_stat & DMADESC_OV_MASK)
-				dev->stats.rx_fifo_errors++;
-			continue;
-		}
-
-		/* valid packet */
-		skb = priv->rx_skb[desc_idx];
-		len = (len_stat & DMADESC_LENGTH_MASK) >> DMADESC_LENGTH_SHIFT;
-		/* don't include FCS */
-		len -= 4;
-
-		if (len < copybreak) {
-			struct sk_buff *nskb;
-
-			nskb = netdev_alloc_skb_ip_align(dev, len);
-			if (!nskb) {
-				/* forget packet, just rearm desc */
-				dev->stats.rx_dropped++;
-				continue;
-			}
-
-			dma_sync_single_for_cpu(kdev, desc->address,
-						len, DMA_FROM_DEVICE);
-			memcpy(nskb->data, skb->data, len);
-			dma_sync_single_for_device(kdev, desc->address,
-						   len, DMA_FROM_DEVICE);
-			skb = nskb;
-		} else {
-			dma_unmap_single(&priv->pdev->dev, desc->address,
-					 priv->rx_skb_size, DMA_FROM_DEVICE);
-			priv->rx_skb[desc_idx] = NULL;
-		}
-
-		skb_put(skb, len);
-		skb->protocol = eth_type_trans(skb, dev);
-		dev->stats.rx_packets++;
-		dev->stats.rx_bytes += len;
-		netif_receive_skb(skb);
-
-	} while (--budget > 0);
-
-	if (processed || !priv->rx_desc_count) {
-		bcm_enet_refill_rx(dev);
-
-		/* kick rx dma */
-		enet_dma_writel(priv, ENETDMA_CHANCFG_EN_MASK,
-				ENETDMA_CHANCFG_REG(priv->rx_chan));
-	}
-
-	return processed;
-}
-
-
-/*
- * try to or force reclaim of transmitted buffers
- */
-static int bcm_enet_tx_reclaim(struct net_device *dev, int force)
-{
-	struct bcm_enet_priv *priv;
-	int released;
-
-	priv = netdev_priv(dev);
-	released = 0;
-
-	while (priv->tx_desc_count < priv->tx_ring_size) {
-		struct bcm_enet_desc *desc;
-		struct sk_buff *skb;
-
-		/* We run in a bh and fight against start_xmit, which
-		 * is called with bh disabled  */
-		spin_lock(&priv->tx_lock);
-
-		desc = &priv->tx_desc_cpu[priv->tx_dirty_desc];
-
-		if (!force && (desc->len_stat & DMADESC_OWNER_MASK)) {
-			spin_unlock(&priv->tx_lock);
-			break;
-		}
-
-		/* ensure other field of the descriptor were not read
-		 * before we checked ownership */
-		rmb();
-
-		skb = priv->tx_skb[priv->tx_dirty_desc];
-		priv->tx_skb[priv->tx_dirty_desc] = NULL;
-		dma_unmap_single(&priv->pdev->dev, desc->address, skb->len,
-				 DMA_TO_DEVICE);
-
-		priv->tx_dirty_desc++;
-		if (priv->tx_dirty_desc == priv->tx_ring_size)
-			priv->tx_dirty_desc = 0;
-		priv->tx_desc_count++;
-
-		spin_unlock(&priv->tx_lock);
-
-		if (desc->len_stat & DMADESC_UNDER_MASK)
-			dev->stats.tx_errors++;
-
-		dev_kfree_skb(skb);
-		released++;
-	}
-
-	if (netif_queue_stopped(dev) && released)
-		netif_wake_queue(dev);
-
-	return released;
-}
-
-/*
- * poll func, called by network core
- */
-static int bcm_enet_poll(struct napi_struct *napi, int budget)
-{
-	struct bcm_enet_priv *priv;
-	struct net_device *dev;
-	int tx_work_done, rx_work_done;
-
-	priv = container_of(napi, struct bcm_enet_priv, napi);
-	dev = priv->net_dev;
-
-	/* ack interrupts */
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IR_REG(priv->rx_chan));
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IR_REG(priv->tx_chan));
-
-	/* reclaim sent skb */
-	tx_work_done = bcm_enet_tx_reclaim(dev, 0);
-
-	spin_lock(&priv->rx_lock);
-	rx_work_done = bcm_enet_receive_queue(dev, budget);
-	spin_unlock(&priv->rx_lock);
-
-	if (rx_work_done >= budget || tx_work_done > 0) {
-		/* rx/tx queue is not yet empty/clean */
-		return rx_work_done;
-	}
-
-	/* no more packet in rx/tx queue, remove device from poll
-	 * queue */
-	napi_complete(napi);
-
-	/* restore rx/tx interrupt */
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IRMASK_REG(priv->rx_chan));
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IRMASK_REG(priv->tx_chan));
-
-	return rx_work_done;
-}
-
-/*
- * mac interrupt handler
- */
-static irqreturn_t bcm_enet_isr_mac(int irq, void *dev_id)
-{
-	struct net_device *dev;
-	struct bcm_enet_priv *priv;
-	u32 stat;
-
-	dev = dev_id;
-	priv = netdev_priv(dev);
-
-	stat = enet_readl(priv, ENET_IR_REG);
-	if (!(stat & ENET_IR_MIB))
-		return IRQ_NONE;
-
-	/* clear & mask interrupt */
-	enet_writel(priv, ENET_IR_MIB, ENET_IR_REG);
-	enet_writel(priv, 0, ENET_IRMASK_REG);
-
-	/* read mib registers in workqueue */
-	schedule_work(&priv->mib_update_task);
-
-	return IRQ_HANDLED;
-}
-
-/*
- * rx/tx dma interrupt handler
- */
-static irqreturn_t bcm_enet_isr_dma(int irq, void *dev_id)
-{
-	struct net_device *dev;
-	struct bcm_enet_priv *priv;
-
-	dev = dev_id;
-	priv = netdev_priv(dev);
-
-	/* mask rx/tx interrupts */
-	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
-
-	napi_schedule(&priv->napi);
-
-	return IRQ_HANDLED;
-}
-
-/*
- * tx request callback
- */
-static int bcm_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct bcm_enet_priv *priv;
-	struct bcm_enet_desc *desc;
-	u32 len_stat;
-	int ret;
-
-	priv = netdev_priv(dev);
-
-	/* lock against tx reclaim */
-	spin_lock(&priv->tx_lock);
-
-	/* make sure  the tx hw queue  is not full,  should not happen
-	 * since we stop queue before it's the case */
-	if (unlikely(!priv->tx_desc_count)) {
-		netif_stop_queue(dev);
-		dev_err(&priv->pdev->dev, "xmit called with no tx desc "
-			"available?\n");
-		ret = NETDEV_TX_BUSY;
-		goto out_unlock;
-	}
-
-	/* point to the next available desc */
-	desc = &priv->tx_desc_cpu[priv->tx_curr_desc];
-	priv->tx_skb[priv->tx_curr_desc] = skb;
-
-	/* fill descriptor */
-	desc->address = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
-				       DMA_TO_DEVICE);
-
-	len_stat = (skb->len << DMADESC_LENGTH_SHIFT) & DMADESC_LENGTH_MASK;
-	len_stat |= DMADESC_ESOP_MASK |
-		DMADESC_APPEND_CRC |
-		DMADESC_OWNER_MASK;
-
-	priv->tx_curr_desc++;
-	if (priv->tx_curr_desc == priv->tx_ring_size) {
-		priv->tx_curr_desc = 0;
-		len_stat |= DMADESC_WRAP_MASK;
-	}
-	priv->tx_desc_count--;
-
-	/* dma might be already polling, make sure we update desc
-	 * fields in correct order */
-	wmb();
-	desc->len_stat = len_stat;
-	wmb();
-
-	/* kick tx dma */
-	enet_dma_writel(priv, ENETDMA_CHANCFG_EN_MASK,
-			ENETDMA_CHANCFG_REG(priv->tx_chan));
-
-	/* stop queue if no more desc available */
-	if (!priv->tx_desc_count)
-		netif_stop_queue(dev);
-
-	dev->stats.tx_bytes += skb->len;
-	dev->stats.tx_packets++;
-	ret = NETDEV_TX_OK;
-
-out_unlock:
-	spin_unlock(&priv->tx_lock);
-	return ret;
-}
-
-/*
- * Change the interface's mac address.
- */
-static int bcm_enet_set_mac_address(struct net_device *dev, void *p)
-{
-	struct bcm_enet_priv *priv;
-	struct sockaddr *addr = p;
-	u32 val;
-
-	priv = netdev_priv(dev);
-	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
-
-	/* use perfect match register 0 to store my mac address */
-	val = (dev->dev_addr[2] << 24) | (dev->dev_addr[3] << 16) |
-		(dev->dev_addr[4] << 8) | dev->dev_addr[5];
-	enet_writel(priv, val, ENET_PML_REG(0));
-
-	val = (dev->dev_addr[0] << 8 | dev->dev_addr[1]);
-	val |= ENET_PMH_DATAVALID_MASK;
-	enet_writel(priv, val, ENET_PMH_REG(0));
-
-	return 0;
-}
-
-/*
- * Change rx mode (promiscuous/allmulti) and update multicast list
- */
-static void bcm_enet_set_multicast_list(struct net_device *dev)
-{
-	struct bcm_enet_priv *priv;
-	struct netdev_hw_addr *ha;
-	u32 val;
-	int i;
-
-	priv = netdev_priv(dev);
-
-	val = enet_readl(priv, ENET_RXCFG_REG);
-
-	if (dev->flags & IFF_PROMISC)
-		val |= ENET_RXCFG_PROMISC_MASK;
-	else
-		val &= ~ENET_RXCFG_PROMISC_MASK;
-
-	/* only 3 perfect match registers left, first one is used for
-	 * own mac address */
-	if ((dev->flags & IFF_ALLMULTI) || netdev_mc_count(dev) > 3)
-		val |= ENET_RXCFG_ALLMCAST_MASK;
-	else
-		val &= ~ENET_RXCFG_ALLMCAST_MASK;
-
-	/* no need to set perfect match registers if we catch all
-	 * multicast */
-	if (val & ENET_RXCFG_ALLMCAST_MASK) {
-		enet_writel(priv, val, ENET_RXCFG_REG);
-		return;
-	}
-
-	i = 0;
-	netdev_for_each_mc_addr(ha, dev) {
-		u8 *dmi_addr;
-		u32 tmp;
-
-		if (i == 3)
-			break;
-		/* update perfect match registers */
-		dmi_addr = ha->addr;
-		tmp = (dmi_addr[2] << 24) | (dmi_addr[3] << 16) |
-			(dmi_addr[4] << 8) | dmi_addr[5];
-		enet_writel(priv, tmp, ENET_PML_REG(i + 1));
-
-		tmp = (dmi_addr[0] << 8 | dmi_addr[1]);
-		tmp |= ENET_PMH_DATAVALID_MASK;
-		enet_writel(priv, tmp, ENET_PMH_REG(i++ + 1));
-	}
-
-	for (; i < 3; i++) {
-		enet_writel(priv, 0, ENET_PML_REG(i + 1));
-		enet_writel(priv, 0, ENET_PMH_REG(i + 1));
-	}
-
-	enet_writel(priv, val, ENET_RXCFG_REG);
-}
-
-/*
- * set mac duplex parameters
- */
-static void bcm_enet_set_duplex(struct bcm_enet_priv *priv, int fullduplex)
-{
-	u32 val;
-
-	val = enet_readl(priv, ENET_TXCTL_REG);
-	if (fullduplex)
-		val |= ENET_TXCTL_FD_MASK;
-	else
-		val &= ~ENET_TXCTL_FD_MASK;
-	enet_writel(priv, val, ENET_TXCTL_REG);
-}
-
-/*
- * set mac flow control parameters
- */
-static void bcm_enet_set_flow(struct bcm_enet_priv *priv, int rx_en, int tx_en)
-{
-	u32 val;
-
-	/* rx flow control (pause frame handling) */
-	val = enet_readl(priv, ENET_RXCFG_REG);
-	if (rx_en)
-		val |= ENET_RXCFG_ENFLOW_MASK;
-	else
-		val &= ~ENET_RXCFG_ENFLOW_MASK;
-	enet_writel(priv, val, ENET_RXCFG_REG);
-
-	/* tx flow control (pause frame generation) */
-	val = enet_dma_readl(priv, ENETDMA_CFG_REG);
-	if (tx_en)
-		val |= ENETDMA_CFG_FLOWCH_MASK(priv->rx_chan);
-	else
-		val &= ~ENETDMA_CFG_FLOWCH_MASK(priv->rx_chan);
-	enet_dma_writel(priv, val, ENETDMA_CFG_REG);
-}
-
-/*
- * link changed callback (from phylib)
- */
-static void bcm_enet_adjust_phy_link(struct net_device *dev)
-{
-	struct bcm_enet_priv *priv;
-	struct phy_device *phydev;
-	int status_changed;
-
-	priv = netdev_priv(dev);
-	phydev = priv->phydev;
-	status_changed = 0;
-
-	if (priv->old_link != phydev->link) {
-		status_changed = 1;
-		priv->old_link = phydev->link;
-	}
-
-	/* reflect duplex change in mac configuration */
-	if (phydev->link && phydev->duplex != priv->old_duplex) {
-		bcm_enet_set_duplex(priv,
-				    (phydev->duplex == DUPLEX_FULL) ? 1 : 0);
-		status_changed = 1;
-		priv->old_duplex = phydev->duplex;
-	}
-
-	/* enable flow control if remote advertise it (trust phylib to
-	 * check that duplex is full */
-	if (phydev->link && phydev->pause != priv->old_pause) {
-		int rx_pause_en, tx_pause_en;
-
-		if (phydev->pause) {
-			/* pause was advertised by lpa and us */
-			rx_pause_en = 1;
-			tx_pause_en = 1;
-		} else if (!priv->pause_auto) {
-			/* pause setting overrided by user */
-			rx_pause_en = priv->pause_rx;
-			tx_pause_en = priv->pause_tx;
-		} else {
-			rx_pause_en = 0;
-			tx_pause_en = 0;
-		}
-
-		bcm_enet_set_flow(priv, rx_pause_en, tx_pause_en);
-		status_changed = 1;
-		priv->old_pause = phydev->pause;
-	}
-
-	if (status_changed) {
-		pr_info("%s: link %s", dev->name, phydev->link ?
-			"UP" : "DOWN");
-		if (phydev->link)
-			pr_cont(" - %d/%s - flow control %s", phydev->speed,
-			       DUPLEX_FULL == phydev->duplex ? "full" : "half",
-			       phydev->pause == 1 ? "rx&tx" : "off");
-
-		pr_cont("\n");
-	}
-}
-
-/*
- * link changed callback (if phylib is not used)
- */
-static void bcm_enet_adjust_link(struct net_device *dev)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-	bcm_enet_set_duplex(priv, priv->force_duplex_full);
-	bcm_enet_set_flow(priv, priv->pause_rx, priv->pause_tx);
-	netif_carrier_on(dev);
-
-	pr_info("%s: link forced UP - %d/%s - flow control %s/%s\n",
-		dev->name,
-		priv->force_speed_100 ? 100 : 10,
-		priv->force_duplex_full ? "full" : "half",
-		priv->pause_rx ? "rx" : "off",
-		priv->pause_tx ? "tx" : "off");
-}
-
-/*
- * open callback, allocate dma rings & buffers and start rx operation
- */
-static int bcm_enet_open(struct net_device *dev)
-{
-	struct bcm_enet_priv *priv;
-	struct sockaddr addr;
-	struct device *kdev;
-	struct phy_device *phydev;
-	int i, ret;
-	unsigned int size;
-	char phy_id[MII_BUS_ID_SIZE + 3];
-	void *p;
-	u32 val;
-
-	priv = netdev_priv(dev);
-	kdev = &priv->pdev->dev;
-
-	if (priv->has_phy) {
-		/* connect to PHY */
-		snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
-			 priv->mac_id ? "1" : "0", priv->phy_id);
-
-		phydev = phy_connect(dev, phy_id, bcm_enet_adjust_phy_link, 0,
-				     PHY_INTERFACE_MODE_MII);
-
-		if (IS_ERR(phydev)) {
-			dev_err(kdev, "could not attach to PHY\n");
-			return PTR_ERR(phydev);
-		}
-
-		/* mask with MAC supported features */
-		phydev->supported &= (SUPPORTED_10baseT_Half |
-				      SUPPORTED_10baseT_Full |
-				      SUPPORTED_100baseT_Half |
-				      SUPPORTED_100baseT_Full |
-				      SUPPORTED_Autoneg |
-				      SUPPORTED_Pause |
-				      SUPPORTED_MII);
-		phydev->advertising = phydev->supported;
-
-		if (priv->pause_auto && priv->pause_rx && priv->pause_tx)
-			phydev->advertising |= SUPPORTED_Pause;
-		else
-			phydev->advertising &= ~SUPPORTED_Pause;
-
-		dev_info(kdev, "attached PHY at address %d [%s]\n",
-			 phydev->addr, phydev->drv->name);
-
-		priv->old_link = 0;
-		priv->old_duplex = -1;
-		priv->old_pause = -1;
-		priv->phydev = phydev;
-	}
-
-	/* mask all interrupts and request them */
-	enet_writel(priv, 0, ENET_IRMASK_REG);
-	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
-
-	ret = request_irq(dev->irq, bcm_enet_isr_mac, 0, dev->name, dev);
-	if (ret)
-		goto out_phy_disconnect;
-
-	ret = request_irq(priv->irq_rx, bcm_enet_isr_dma, IRQF_DISABLED,
-			  dev->name, dev);
-	if (ret)
-		goto out_freeirq;
-
-	ret = request_irq(priv->irq_tx, bcm_enet_isr_dma,
-			  IRQF_DISABLED, dev->name, dev);
-	if (ret)
-		goto out_freeirq_rx;
-
-	/* initialize perfect match registers */
-	for (i = 0; i < 4; i++) {
-		enet_writel(priv, 0, ENET_PML_REG(i));
-		enet_writel(priv, 0, ENET_PMH_REG(i));
-	}
-
-	/* write device mac address */
-	memcpy(addr.sa_data, dev->dev_addr, ETH_ALEN);
-	bcm_enet_set_mac_address(dev, &addr);
-
-	/* allocate rx dma ring */
-	size = priv->rx_ring_size * sizeof(struct bcm_enet_desc);
-	p = dma_alloc_coherent(kdev, size, &priv->rx_desc_dma, GFP_KERNEL);
-	if (!p) {
-		dev_err(kdev, "cannot allocate rx ring %u\n", size);
-		ret = -ENOMEM;
-		goto out_freeirq_tx;
-	}
-
-	memset(p, 0, size);
-	priv->rx_desc_alloc_size = size;
-	priv->rx_desc_cpu = p;
-
-	/* allocate tx dma ring */
-	size = priv->tx_ring_size * sizeof(struct bcm_enet_desc);
-	p = dma_alloc_coherent(kdev, size, &priv->tx_desc_dma, GFP_KERNEL);
-	if (!p) {
-		dev_err(kdev, "cannot allocate tx ring\n");
-		ret = -ENOMEM;
-		goto out_free_rx_ring;
-	}
-
-	memset(p, 0, size);
-	priv->tx_desc_alloc_size = size;
-	priv->tx_desc_cpu = p;
-
-	priv->tx_skb = kzalloc(sizeof(struct sk_buff *) * priv->tx_ring_size,
-			       GFP_KERNEL);
-	if (!priv->tx_skb) {
-		dev_err(kdev, "cannot allocate rx skb queue\n");
-		ret = -ENOMEM;
-		goto out_free_tx_ring;
-	}
-
-	priv->tx_desc_count = priv->tx_ring_size;
-	priv->tx_dirty_desc = 0;
-	priv->tx_curr_desc = 0;
-	spin_lock_init(&priv->tx_lock);
-
-	/* init & fill rx ring with skbs */
-	priv->rx_skb = kzalloc(sizeof(struct sk_buff *) * priv->rx_ring_size,
-			       GFP_KERNEL);
-	if (!priv->rx_skb) {
-		dev_err(kdev, "cannot allocate rx skb queue\n");
-		ret = -ENOMEM;
-		goto out_free_tx_skb;
-	}
-
-	priv->rx_desc_count = 0;
-	priv->rx_dirty_desc = 0;
-	priv->rx_curr_desc = 0;
-
-	/* initialize flow control buffer allocation */
-	enet_dma_writel(priv, ENETDMA_BUFALLOC_FORCE_MASK | 0,
-			ENETDMA_BUFALLOC_REG(priv->rx_chan));
-
-	if (bcm_enet_refill_rx(dev)) {
-		dev_err(kdev, "cannot allocate rx skb queue\n");
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	/* write rx & tx ring addresses */
-	enet_dma_writel(priv, priv->rx_desc_dma,
-			ENETDMA_RSTART_REG(priv->rx_chan));
-	enet_dma_writel(priv, priv->tx_desc_dma,
-			ENETDMA_RSTART_REG(priv->tx_chan));
-
-	/* clear remaining state ram for rx & tx channel */
-	enet_dma_writel(priv, 0, ENETDMA_SRAM2_REG(priv->rx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_SRAM2_REG(priv->tx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_SRAM3_REG(priv->rx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_SRAM3_REG(priv->tx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_SRAM4_REG(priv->rx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_SRAM4_REG(priv->tx_chan));
-
-	/* set max rx/tx length */
-	enet_writel(priv, priv->hw_mtu, ENET_RXMAXLEN_REG);
-	enet_writel(priv, priv->hw_mtu, ENET_TXMAXLEN_REG);
-
-	/* set dma maximum burst len */
-	enet_dma_writel(priv, BCMENET_DMA_MAXBURST,
-			ENETDMA_MAXBURST_REG(priv->rx_chan));
-	enet_dma_writel(priv, BCMENET_DMA_MAXBURST,
-			ENETDMA_MAXBURST_REG(priv->tx_chan));
-
-	/* set correct transmit fifo watermark */
-	enet_writel(priv, BCMENET_TX_FIFO_TRESH, ENET_TXWMARK_REG);
-
-	/* set flow control low/high threshold to 1/3 / 2/3 */
-	val = priv->rx_ring_size / 3;
-	enet_dma_writel(priv, val, ENETDMA_FLOWCL_REG(priv->rx_chan));
-	val = (priv->rx_ring_size * 2) / 3;
-	enet_dma_writel(priv, val, ENETDMA_FLOWCH_REG(priv->rx_chan));
-
-	/* all set, enable mac and interrupts, start dma engine and
-	 * kick rx dma channel */
-	wmb();
-	val = enet_readl(priv, ENET_CTL_REG);
-	val |= ENET_CTL_ENABLE_MASK;
-	enet_writel(priv, val, ENET_CTL_REG);
-	enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG);
-	enet_dma_writel(priv, ENETDMA_CHANCFG_EN_MASK,
-			ENETDMA_CHANCFG_REG(priv->rx_chan));
-
-	/* watch "mib counters about to overflow" interrupt */
-	enet_writel(priv, ENET_IR_MIB, ENET_IR_REG);
-	enet_writel(priv, ENET_IR_MIB, ENET_IRMASK_REG);
-
-	/* watch "packet transferred" interrupt in rx and tx */
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IR_REG(priv->rx_chan));
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IR_REG(priv->tx_chan));
-
-	/* make sure we enable napi before rx interrupt  */
-	napi_enable(&priv->napi);
-
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IRMASK_REG(priv->rx_chan));
-	enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
-			ENETDMA_IRMASK_REG(priv->tx_chan));
-
-	if (priv->has_phy)
-		phy_start(priv->phydev);
-	else
-		bcm_enet_adjust_link(dev);
-
-	netif_start_queue(dev);
-	return 0;
-
-out:
-	for (i = 0; i < priv->rx_ring_size; i++) {
-		struct bcm_enet_desc *desc;
-
-		if (!priv->rx_skb[i])
-			continue;
-
-		desc = &priv->rx_desc_cpu[i];
-		dma_unmap_single(kdev, desc->address, priv->rx_skb_size,
-				 DMA_FROM_DEVICE);
-		kfree_skb(priv->rx_skb[i]);
-	}
-	kfree(priv->rx_skb);
-
-out_free_tx_skb:
-	kfree(priv->tx_skb);
-
-out_free_tx_ring:
-	dma_free_coherent(kdev, priv->tx_desc_alloc_size,
-			  priv->tx_desc_cpu, priv->tx_desc_dma);
-
-out_free_rx_ring:
-	dma_free_coherent(kdev, priv->rx_desc_alloc_size,
-			  priv->rx_desc_cpu, priv->rx_desc_dma);
-
-out_freeirq_tx:
-	free_irq(priv->irq_tx, dev);
-
-out_freeirq_rx:
-	free_irq(priv->irq_rx, dev);
-
-out_freeirq:
-	free_irq(dev->irq, dev);
-
-out_phy_disconnect:
-	phy_disconnect(priv->phydev);
-
-	return ret;
-}
-
-/*
- * disable mac
- */
-static void bcm_enet_disable_mac(struct bcm_enet_priv *priv)
-{
-	int limit;
-	u32 val;
-
-	val = enet_readl(priv, ENET_CTL_REG);
-	val |= ENET_CTL_DISABLE_MASK;
-	enet_writel(priv, val, ENET_CTL_REG);
-
-	limit = 1000;
-	do {
-		u32 val;
-
-		val = enet_readl(priv, ENET_CTL_REG);
-		if (!(val & ENET_CTL_DISABLE_MASK))
-			break;
-		udelay(1);
-	} while (limit--);
-}
-
-/*
- * disable dma in given channel
- */
-static void bcm_enet_disable_dma(struct bcm_enet_priv *priv, int chan)
-{
-	int limit;
-
-	enet_dma_writel(priv, 0, ENETDMA_CHANCFG_REG(chan));
-
-	limit = 1000;
-	do {
-		u32 val;
-
-		val = enet_dma_readl(priv, ENETDMA_CHANCFG_REG(chan));
-		if (!(val & ENETDMA_CHANCFG_EN_MASK))
-			break;
-		udelay(1);
-	} while (limit--);
-}
-
-/*
- * stop callback
- */
-static int bcm_enet_stop(struct net_device *dev)
-{
-	struct bcm_enet_priv *priv;
-	struct device *kdev;
-	int i;
-
-	priv = netdev_priv(dev);
-	kdev = &priv->pdev->dev;
-
-	netif_stop_queue(dev);
-	napi_disable(&priv->napi);
-	if (priv->has_phy)
-		phy_stop(priv->phydev);
-	del_timer_sync(&priv->rx_timeout);
-
-	/* mask all interrupts */
-	enet_writel(priv, 0, ENET_IRMASK_REG);
-	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
-	enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
-
-	/* make sure no mib update is scheduled */
-	cancel_work_sync(&priv->mib_update_task);
-
-	/* disable dma & mac */
-	bcm_enet_disable_dma(priv, priv->tx_chan);
-	bcm_enet_disable_dma(priv, priv->rx_chan);
-	bcm_enet_disable_mac(priv);
-
-	/* force reclaim of all tx buffers */
-	bcm_enet_tx_reclaim(dev, 1);
-
-	/* free the rx skb ring */
-	for (i = 0; i < priv->rx_ring_size; i++) {
-		struct bcm_enet_desc *desc;
-
-		if (!priv->rx_skb[i])
-			continue;
-
-		desc = &priv->rx_desc_cpu[i];
-		dma_unmap_single(kdev, desc->address, priv->rx_skb_size,
-				 DMA_FROM_DEVICE);
-		kfree_skb(priv->rx_skb[i]);
-	}
-
-	/* free remaining allocated memory */
-	kfree(priv->rx_skb);
-	kfree(priv->tx_skb);
-	dma_free_coherent(kdev, priv->rx_desc_alloc_size,
-			  priv->rx_desc_cpu, priv->rx_desc_dma);
-	dma_free_coherent(kdev, priv->tx_desc_alloc_size,
-			  priv->tx_desc_cpu, priv->tx_desc_dma);
-	free_irq(priv->irq_tx, dev);
-	free_irq(priv->irq_rx, dev);
-	free_irq(dev->irq, dev);
-
-	/* release phy */
-	if (priv->has_phy) {
-		phy_disconnect(priv->phydev);
-		priv->phydev = NULL;
-	}
-
-	return 0;
-}
-
-/*
- * ethtool callbacks
- */
-struct bcm_enet_stats {
-	char stat_string[ETH_GSTRING_LEN];
-	int sizeof_stat;
-	int stat_offset;
-	int mib_reg;
-};
-
-#define GEN_STAT(m) sizeof(((struct bcm_enet_priv *)0)->m),		\
-		     offsetof(struct bcm_enet_priv, m)
-#define DEV_STAT(m) sizeof(((struct net_device_stats *)0)->m),		\
-		     offsetof(struct net_device_stats, m)
-
-static const struct bcm_enet_stats bcm_enet_gstrings_stats[] = {
-	{ "rx_packets", DEV_STAT(rx_packets), -1 },
-	{ "tx_packets",	DEV_STAT(tx_packets), -1 },
-	{ "rx_bytes", DEV_STAT(rx_bytes), -1 },
-	{ "tx_bytes", DEV_STAT(tx_bytes), -1 },
-	{ "rx_errors", DEV_STAT(rx_errors), -1 },
-	{ "tx_errors", DEV_STAT(tx_errors), -1 },
-	{ "rx_dropped",	DEV_STAT(rx_dropped), -1 },
-	{ "tx_dropped",	DEV_STAT(tx_dropped), -1 },
-
-	{ "rx_good_octets", GEN_STAT(mib.rx_gd_octets), ETH_MIB_RX_GD_OCTETS},
-	{ "rx_good_pkts", GEN_STAT(mib.rx_gd_pkts), ETH_MIB_RX_GD_PKTS },
-	{ "rx_broadcast", GEN_STAT(mib.rx_brdcast), ETH_MIB_RX_BRDCAST },
-	{ "rx_multicast", GEN_STAT(mib.rx_mult), ETH_MIB_RX_MULT },
-	{ "rx_64_octets", GEN_STAT(mib.rx_64), ETH_MIB_RX_64 },
-	{ "rx_65_127_oct", GEN_STAT(mib.rx_65_127), ETH_MIB_RX_65_127 },
-	{ "rx_128_255_oct", GEN_STAT(mib.rx_128_255), ETH_MIB_RX_128_255 },
-	{ "rx_256_511_oct", GEN_STAT(mib.rx_256_511), ETH_MIB_RX_256_511 },
-	{ "rx_512_1023_oct", GEN_STAT(mib.rx_512_1023), ETH_MIB_RX_512_1023 },
-	{ "rx_1024_max_oct", GEN_STAT(mib.rx_1024_max), ETH_MIB_RX_1024_MAX },
-	{ "rx_jabber", GEN_STAT(mib.rx_jab), ETH_MIB_RX_JAB },
-	{ "rx_oversize", GEN_STAT(mib.rx_ovr), ETH_MIB_RX_OVR },
-	{ "rx_fragment", GEN_STAT(mib.rx_frag), ETH_MIB_RX_FRAG },
-	{ "rx_dropped",	GEN_STAT(mib.rx_drop), ETH_MIB_RX_DROP },
-	{ "rx_crc_align", GEN_STAT(mib.rx_crc_align), ETH_MIB_RX_CRC_ALIGN },
-	{ "rx_undersize", GEN_STAT(mib.rx_und), ETH_MIB_RX_UND },
-	{ "rx_crc", GEN_STAT(mib.rx_crc), ETH_MIB_RX_CRC },
-	{ "rx_align", GEN_STAT(mib.rx_align), ETH_MIB_RX_ALIGN },
-	{ "rx_symbol_error", GEN_STAT(mib.rx_sym), ETH_MIB_RX_SYM },
-	{ "rx_pause", GEN_STAT(mib.rx_pause), ETH_MIB_RX_PAUSE },
-	{ "rx_control", GEN_STAT(mib.rx_cntrl), ETH_MIB_RX_CNTRL },
-
-	{ "tx_good_octets", GEN_STAT(mib.tx_gd_octets), ETH_MIB_TX_GD_OCTETS },
-	{ "tx_good_pkts", GEN_STAT(mib.tx_gd_pkts), ETH_MIB_TX_GD_PKTS },
-	{ "tx_broadcast", GEN_STAT(mib.tx_brdcast), ETH_MIB_TX_BRDCAST },
-	{ "tx_multicast", GEN_STAT(mib.tx_mult), ETH_MIB_TX_MULT },
-	{ "tx_64_oct", GEN_STAT(mib.tx_64), ETH_MIB_TX_64 },
-	{ "tx_65_127_oct", GEN_STAT(mib.tx_65_127), ETH_MIB_TX_65_127 },
-	{ "tx_128_255_oct", GEN_STAT(mib.tx_128_255), ETH_MIB_TX_128_255 },
-	{ "tx_256_511_oct", GEN_STAT(mib.tx_256_511), ETH_MIB_TX_256_511 },
-	{ "tx_512_1023_oct", GEN_STAT(mib.tx_512_1023), ETH_MIB_TX_512_1023},
-	{ "tx_1024_max_oct", GEN_STAT(mib.tx_1024_max), ETH_MIB_TX_1024_MAX },
-	{ "tx_jabber", GEN_STAT(mib.tx_jab), ETH_MIB_TX_JAB },
-	{ "tx_oversize", GEN_STAT(mib.tx_ovr), ETH_MIB_TX_OVR },
-	{ "tx_fragment", GEN_STAT(mib.tx_frag), ETH_MIB_TX_FRAG },
-	{ "tx_underrun", GEN_STAT(mib.tx_underrun), ETH_MIB_TX_UNDERRUN },
-	{ "tx_collisions", GEN_STAT(mib.tx_col), ETH_MIB_TX_COL },
-	{ "tx_single_collision", GEN_STAT(mib.tx_1_col), ETH_MIB_TX_1_COL },
-	{ "tx_multiple_collision", GEN_STAT(mib.tx_m_col), ETH_MIB_TX_M_COL },
-	{ "tx_excess_collision", GEN_STAT(mib.tx_ex_col), ETH_MIB_TX_EX_COL },
-	{ "tx_late_collision", GEN_STAT(mib.tx_late), ETH_MIB_TX_LATE },
-	{ "tx_deferred", GEN_STAT(mib.tx_def), ETH_MIB_TX_DEF },
-	{ "tx_carrier_sense", GEN_STAT(mib.tx_crs), ETH_MIB_TX_CRS },
-	{ "tx_pause", GEN_STAT(mib.tx_pause), ETH_MIB_TX_PAUSE },
-
-};
-
-#define BCM_ENET_STATS_LEN	\
-	(sizeof(bcm_enet_gstrings_stats) / sizeof(struct bcm_enet_stats))
-
-static const u32 unused_mib_regs[] = {
-	ETH_MIB_TX_ALL_OCTETS,
-	ETH_MIB_TX_ALL_PKTS,
-	ETH_MIB_RX_ALL_OCTETS,
-	ETH_MIB_RX_ALL_PKTS,
-};
-
-
-static void bcm_enet_get_drvinfo(struct net_device *netdev,
-				 struct ethtool_drvinfo *drvinfo)
-{
-	strncpy(drvinfo->driver, bcm_enet_driver_name, 32);
-	strncpy(drvinfo->version, bcm_enet_driver_version, 32);
-	strncpy(drvinfo->fw_version, "N/A", 32);
-	strncpy(drvinfo->bus_info, "bcm63xx", 32);
-	drvinfo->n_stats = BCM_ENET_STATS_LEN;
-}
-
-static int bcm_enet_get_sset_count(struct net_device *netdev,
-					int string_set)
-{
-	switch (string_set) {
-	case ETH_SS_STATS:
-		return BCM_ENET_STATS_LEN;
-	default:
-		return -EINVAL;
-	}
-}
-
-static void bcm_enet_get_strings(struct net_device *netdev,
-				 u32 stringset, u8 *data)
-{
-	int i;
-
-	switch (stringset) {
-	case ETH_SS_STATS:
-		for (i = 0; i < BCM_ENET_STATS_LEN; i++) {
-			memcpy(data + i * ETH_GSTRING_LEN,
-			       bcm_enet_gstrings_stats[i].stat_string,
-			       ETH_GSTRING_LEN);
-		}
-		break;
-	}
-}
-
-static void update_mib_counters(struct bcm_enet_priv *priv)
-{
-	int i;
-
-	for (i = 0; i < BCM_ENET_STATS_LEN; i++) {
-		const struct bcm_enet_stats *s;
-		u32 val;
-		char *p;
-
-		s = &bcm_enet_gstrings_stats[i];
-		if (s->mib_reg == -1)
-			continue;
-
-		val = enet_readl(priv, ENET_MIB_REG(s->mib_reg));
-		p = (char *)priv + s->stat_offset;
-
-		if (s->sizeof_stat == sizeof(u64))
-			*(u64 *)p += val;
-		else
-			*(u32 *)p += val;
-	}
-
-	/* also empty unused mib counters to make sure mib counter
-	 * overflow interrupt is cleared */
-	for (i = 0; i < ARRAY_SIZE(unused_mib_regs); i++)
-		(void)enet_readl(priv, ENET_MIB_REG(unused_mib_regs[i]));
-}
-
-static void bcm_enet_update_mib_counters_defer(struct work_struct *t)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = container_of(t, struct bcm_enet_priv, mib_update_task);
-	mutex_lock(&priv->mib_update_lock);
-	update_mib_counters(priv);
-	mutex_unlock(&priv->mib_update_lock);
-
-	/* reenable mib interrupt */
-	if (netif_running(priv->net_dev))
-		enet_writel(priv, ENET_IR_MIB, ENET_IRMASK_REG);
-}
-
-static void bcm_enet_get_ethtool_stats(struct net_device *netdev,
-				       struct ethtool_stats *stats,
-				       u64 *data)
-{
-	struct bcm_enet_priv *priv;
-	int i;
-
-	priv = netdev_priv(netdev);
-
-	mutex_lock(&priv->mib_update_lock);
-	update_mib_counters(priv);
-
-	for (i = 0; i < BCM_ENET_STATS_LEN; i++) {
-		const struct bcm_enet_stats *s;
-		char *p;
-
-		s = &bcm_enet_gstrings_stats[i];
-		if (s->mib_reg == -1)
-			p = (char *)&netdev->stats;
-		else
-			p = (char *)priv;
-		p += s->stat_offset;
-		data[i] = (s->sizeof_stat == sizeof(u64)) ?
-			*(u64 *)p : *(u32 *)p;
-	}
-	mutex_unlock(&priv->mib_update_lock);
-}
-
-static int bcm_enet_get_settings(struct net_device *dev,
-				 struct ethtool_cmd *cmd)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-
-	cmd->maxrxpkt = 0;
-	cmd->maxtxpkt = 0;
-
-	if (priv->has_phy) {
-		if (!priv->phydev)
-			return -ENODEV;
-		return phy_ethtool_gset(priv->phydev, cmd);
-	} else {
-		cmd->autoneg = 0;
-		ethtool_cmd_speed_set(cmd, ((priv->force_speed_100)
-					    ? SPEED_100 : SPEED_10));
-		cmd->duplex = (priv->force_duplex_full) ?
-			DUPLEX_FULL : DUPLEX_HALF;
-		cmd->supported = ADVERTISED_10baseT_Half  |
-			ADVERTISED_10baseT_Full |
-			ADVERTISED_100baseT_Half |
-			ADVERTISED_100baseT_Full;
-		cmd->advertising = 0;
-		cmd->port = PORT_MII;
-		cmd->transceiver = XCVR_EXTERNAL;
-	}
-	return 0;
-}
-
-static int bcm_enet_set_settings(struct net_device *dev,
-				 struct ethtool_cmd *cmd)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-	if (priv->has_phy) {
-		if (!priv->phydev)
-			return -ENODEV;
-		return phy_ethtool_sset(priv->phydev, cmd);
-	} else {
-
-		if (cmd->autoneg ||
-		    (cmd->speed != SPEED_100 && cmd->speed != SPEED_10) ||
-		    cmd->port != PORT_MII)
-			return -EINVAL;
-
-		priv->force_speed_100 = (cmd->speed == SPEED_100) ? 1 : 0;
-		priv->force_duplex_full = (cmd->duplex == DUPLEX_FULL) ? 1 : 0;
-
-		if (netif_running(dev))
-			bcm_enet_adjust_link(dev);
-		return 0;
-	}
-}
-
-static void bcm_enet_get_ringparam(struct net_device *dev,
-				   struct ethtool_ringparam *ering)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-
-	/* rx/tx ring is actually only limited by memory */
-	ering->rx_max_pending = 8192;
-	ering->tx_max_pending = 8192;
-	ering->rx_mini_max_pending = 0;
-	ering->rx_jumbo_max_pending = 0;
-	ering->rx_pending = priv->rx_ring_size;
-	ering->tx_pending = priv->tx_ring_size;
-}
-
-static int bcm_enet_set_ringparam(struct net_device *dev,
-				  struct ethtool_ringparam *ering)
-{
-	struct bcm_enet_priv *priv;
-	int was_running;
-
-	priv = netdev_priv(dev);
-
-	was_running = 0;
-	if (netif_running(dev)) {
-		bcm_enet_stop(dev);
-		was_running = 1;
-	}
-
-	priv->rx_ring_size = ering->rx_pending;
-	priv->tx_ring_size = ering->tx_pending;
-
-	if (was_running) {
-		int err;
-
-		err = bcm_enet_open(dev);
-		if (err)
-			dev_close(dev);
-		else
-			bcm_enet_set_multicast_list(dev);
-	}
-	return 0;
-}
-
-static void bcm_enet_get_pauseparam(struct net_device *dev,
-				    struct ethtool_pauseparam *ecmd)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-	ecmd->autoneg = priv->pause_auto;
-	ecmd->rx_pause = priv->pause_rx;
-	ecmd->tx_pause = priv->pause_tx;
-}
-
-static int bcm_enet_set_pauseparam(struct net_device *dev,
-				   struct ethtool_pauseparam *ecmd)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-
-	if (priv->has_phy) {
-		if (ecmd->autoneg && (ecmd->rx_pause != ecmd->tx_pause)) {
-			/* asymetric pause mode not supported,
-			 * actually possible but integrated PHY has RO
-			 * asym_pause bit */
-			return -EINVAL;
-		}
-	} else {
-		/* no pause autoneg on direct mii connection */
-		if (ecmd->autoneg)
-			return -EINVAL;
-	}
-
-	priv->pause_auto = ecmd->autoneg;
-	priv->pause_rx = ecmd->rx_pause;
-	priv->pause_tx = ecmd->tx_pause;
-
-	return 0;
-}
-
-static struct ethtool_ops bcm_enet_ethtool_ops = {
-	.get_strings		= bcm_enet_get_strings,
-	.get_sset_count		= bcm_enet_get_sset_count,
-	.get_ethtool_stats      = bcm_enet_get_ethtool_stats,
-	.get_settings		= bcm_enet_get_settings,
-	.set_settings		= bcm_enet_set_settings,
-	.get_drvinfo		= bcm_enet_get_drvinfo,
-	.get_link		= ethtool_op_get_link,
-	.get_ringparam		= bcm_enet_get_ringparam,
-	.set_ringparam		= bcm_enet_set_ringparam,
-	.get_pauseparam		= bcm_enet_get_pauseparam,
-	.set_pauseparam		= bcm_enet_set_pauseparam,
-};
-
-static int bcm_enet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
-	struct bcm_enet_priv *priv;
-
-	priv = netdev_priv(dev);
-	if (priv->has_phy) {
-		if (!priv->phydev)
-			return -ENODEV;
-		return phy_mii_ioctl(priv->phydev, rq, cmd);
-	} else {
-		struct mii_if_info mii;
-
-		mii.dev = dev;
-		mii.mdio_read = bcm_enet_mdio_read_mii;
-		mii.mdio_write = bcm_enet_mdio_write_mii;
-		mii.phy_id = 0;
-		mii.phy_id_mask = 0x3f;
-		mii.reg_num_mask = 0x1f;
-		return generic_mii_ioctl(&mii, if_mii(rq), cmd, NULL);
-	}
-}
-
-/*
- * calculate actual hardware mtu
- */
-static int compute_hw_mtu(struct bcm_enet_priv *priv, int mtu)
-{
-	int actual_mtu;
-
-	actual_mtu = mtu;
-
-	/* add ethernet header + vlan tag size */
-	actual_mtu += VLAN_ETH_HLEN;
-
-	if (actual_mtu < 64 || actual_mtu > BCMENET_MAX_MTU)
-		return -EINVAL;
-
-	/*
-	 * setup maximum size before we get overflow mark in
-	 * descriptor, note that this will not prevent reception of
-	 * big frames, they will be split into multiple buffers
-	 * anyway
-	 */
-	priv->hw_mtu = actual_mtu;
-
-	/*
-	 * align rx buffer size to dma burst len, account FCS since
-	 * it's appended
-	 */
-	priv->rx_skb_size = ALIGN(actual_mtu + ETH_FCS_LEN,
-				  BCMENET_DMA_MAXBURST * 4);
-	return 0;
-}
-
-/*
- * adjust mtu, can't be called while device is running
- */
-static int bcm_enet_change_mtu(struct net_device *dev, int new_mtu)
-{
-	int ret;
-
-	if (netif_running(dev))
-		return -EBUSY;
-
-	ret = compute_hw_mtu(netdev_priv(dev), new_mtu);
-	if (ret)
-		return ret;
-	dev->mtu = new_mtu;
-	return 0;
-}
-
-/*
- * preinit hardware to allow mii operation while device is down
- */
-static void bcm_enet_hw_preinit(struct bcm_enet_priv *priv)
-{
-	u32 val;
-	int limit;
-
-	/* make sure mac is disabled */
-	bcm_enet_disable_mac(priv);
-
-	/* soft reset mac */
-	val = ENET_CTL_SRESET_MASK;
-	enet_writel(priv, val, ENET_CTL_REG);
-	wmb();
-
-	limit = 1000;
-	do {
-		val = enet_readl(priv, ENET_CTL_REG);
-		if (!(val & ENET_CTL_SRESET_MASK))
-			break;
-		udelay(1);
-	} while (limit--);
-
-	/* select correct mii interface */
-	val = enet_readl(priv, ENET_CTL_REG);
-	if (priv->use_external_mii)
-		val |= ENET_CTL_EPHYSEL_MASK;
-	else
-		val &= ~ENET_CTL_EPHYSEL_MASK;
-	enet_writel(priv, val, ENET_CTL_REG);
-
-	/* turn on mdc clock */
-	enet_writel(priv, (0x1f << ENET_MIISC_MDCFREQDIV_SHIFT) |
-		    ENET_MIISC_PREAMBLEEN_MASK, ENET_MIISC_REG);
-
-	/* set mib counters to self-clear when read */
-	val = enet_readl(priv, ENET_MIBCTL_REG);
-	val |= ENET_MIBCTL_RDCLEAR_MASK;
-	enet_writel(priv, val, ENET_MIBCTL_REG);
-}
-
-static const struct net_device_ops bcm_enet_ops = {
-	.ndo_open		= bcm_enet_open,
-	.ndo_stop		= bcm_enet_stop,
-	.ndo_start_xmit		= bcm_enet_start_xmit,
-	.ndo_set_mac_address	= bcm_enet_set_mac_address,
-	.ndo_set_multicast_list = bcm_enet_set_multicast_list,
-	.ndo_do_ioctl		= bcm_enet_ioctl,
-	.ndo_change_mtu		= bcm_enet_change_mtu,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	.ndo_poll_controller = bcm_enet_netpoll,
-#endif
-};
-
-/*
- * allocate netdevice, request register memory and register device.
- */
-static int __devinit bcm_enet_probe(struct platform_device *pdev)
-{
-	struct bcm_enet_priv *priv;
-	struct net_device *dev;
-	struct bcm63xx_enet_platform_data *pd;
-	struct resource *res_mem, *res_irq, *res_irq_rx, *res_irq_tx;
-	struct mii_bus *bus;
-	const char *clk_name;
-	unsigned int iomem_size;
-	int i, ret;
-
-	/* stop if shared driver failed, assume driver->probe will be
-	 * called in the same order we register devices (correct ?) */
-	if (!bcm_enet_shared_base)
-		return -ENODEV;
-
-	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	res_irq_rx = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
-	res_irq_tx = platform_get_resource(pdev, IORESOURCE_IRQ, 2);
-	if (!res_mem || !res_irq || !res_irq_rx || !res_irq_tx)
-		return -ENODEV;
-
-	ret = 0;
-	dev = alloc_etherdev(sizeof(*priv));
-	if (!dev)
-		return -ENOMEM;
-	priv = netdev_priv(dev);
-
-	ret = compute_hw_mtu(priv, dev->mtu);
-	if (ret)
-		goto out;
-
-	iomem_size = resource_size(res_mem);
-	if (!request_mem_region(res_mem->start, iomem_size, "bcm63xx_enet")) {
-		ret = -EBUSY;
-		goto out;
-	}
-
-	priv->base = ioremap(res_mem->start, iomem_size);
-	if (priv->base == NULL) {
-		ret = -ENOMEM;
-		goto out_release_mem;
-	}
-	dev->irq = priv->irq = res_irq->start;
-	priv->irq_rx = res_irq_rx->start;
-	priv->irq_tx = res_irq_tx->start;
-	priv->mac_id = pdev->id;
-
-	/* get rx & tx dma channel id for this mac */
-	if (priv->mac_id == 0) {
-		priv->rx_chan = 0;
-		priv->tx_chan = 1;
-		clk_name = "enet0";
-	} else {
-		priv->rx_chan = 2;
-		priv->tx_chan = 3;
-		clk_name = "enet1";
-	}
-
-	priv->mac_clk = clk_get(&pdev->dev, clk_name);
-	if (IS_ERR(priv->mac_clk)) {
-		ret = PTR_ERR(priv->mac_clk);
-		goto out_unmap;
-	}
-	clk_enable(priv->mac_clk);
-
-	/* initialize default and fetch platform data */
-	priv->rx_ring_size = BCMENET_DEF_RX_DESC;
-	priv->tx_ring_size = BCMENET_DEF_TX_DESC;
-
-	pd = pdev->dev.platform_data;
-	if (pd) {
-		memcpy(dev->dev_addr, pd->mac_addr, ETH_ALEN);
-		priv->has_phy = pd->has_phy;
-		priv->phy_id = pd->phy_id;
-		priv->has_phy_interrupt = pd->has_phy_interrupt;
-		priv->phy_interrupt = pd->phy_interrupt;
-		priv->use_external_mii = !pd->use_internal_phy;
-		priv->pause_auto = pd->pause_auto;
-		priv->pause_rx = pd->pause_rx;
-		priv->pause_tx = pd->pause_tx;
-		priv->force_duplex_full = pd->force_duplex_full;
-		priv->force_speed_100 = pd->force_speed_100;
-	}
-
-	if (priv->mac_id == 0 && priv->has_phy && !priv->use_external_mii) {
-		/* using internal PHY, enable clock */
-		priv->phy_clk = clk_get(&pdev->dev, "ephy");
-		if (IS_ERR(priv->phy_clk)) {
-			ret = PTR_ERR(priv->phy_clk);
-			priv->phy_clk = NULL;
-			goto out_put_clk_mac;
-		}
-		clk_enable(priv->phy_clk);
-	}
-
-	/* do minimal hardware init to be able to probe mii bus */
-	bcm_enet_hw_preinit(priv);
-
-	/* MII bus registration */
-	if (priv->has_phy) {
-
-		priv->mii_bus = mdiobus_alloc();
-		if (!priv->mii_bus) {
-			ret = -ENOMEM;
-			goto out_uninit_hw;
-		}
-
-		bus = priv->mii_bus;
-		bus->name = "bcm63xx_enet MII bus";
-		bus->parent = &pdev->dev;
-		bus->priv = priv;
-		bus->read = bcm_enet_mdio_read_phylib;
-		bus->write = bcm_enet_mdio_write_phylib;
-		sprintf(bus->id, "%d", priv->mac_id);
-
-		/* only probe bus where we think the PHY is, because
-		 * the mdio read operation return 0 instead of 0xffff
-		 * if a slave is not present on hw */
-		bus->phy_mask = ~(1 << priv->phy_id);
-
-		bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
-		if (!bus->irq) {
-			ret = -ENOMEM;
-			goto out_free_mdio;
-		}
-
-		if (priv->has_phy_interrupt)
-			bus->irq[priv->phy_id] = priv->phy_interrupt;
-		else
-			bus->irq[priv->phy_id] = PHY_POLL;
-
-		ret = mdiobus_register(bus);
-		if (ret) {
-			dev_err(&pdev->dev, "unable to register mdio bus\n");
-			goto out_free_mdio;
-		}
-	} else {
-
-		/* run platform code to initialize PHY device */
-		if (pd->mii_config &&
-		    pd->mii_config(dev, 1, bcm_enet_mdio_read_mii,
-				   bcm_enet_mdio_write_mii)) {
-			dev_err(&pdev->dev, "unable to configure mdio bus\n");
-			goto out_uninit_hw;
-		}
-	}
-
-	spin_lock_init(&priv->rx_lock);
-
-	/* init rx timeout (used for oom) */
-	init_timer(&priv->rx_timeout);
-	priv->rx_timeout.function = bcm_enet_refill_rx_timer;
-	priv->rx_timeout.data = (unsigned long)dev;
-
-	/* init the mib update lock&work */
-	mutex_init(&priv->mib_update_lock);
-	INIT_WORK(&priv->mib_update_task, bcm_enet_update_mib_counters_defer);
-
-	/* zero mib counters */
-	for (i = 0; i < ENET_MIB_REG_COUNT; i++)
-		enet_writel(priv, 0, ENET_MIB_REG(i));
-
-	/* register netdevice */
-	dev->netdev_ops = &bcm_enet_ops;
-	netif_napi_add(dev, &priv->napi, bcm_enet_poll, 16);
-
-	SET_ETHTOOL_OPS(dev, &bcm_enet_ethtool_ops);
-	SET_NETDEV_DEV(dev, &pdev->dev);
-
-	ret = register_netdev(dev);
-	if (ret)
-		goto out_unregister_mdio;
-
-	netif_carrier_off(dev);
-	platform_set_drvdata(pdev, dev);
-	priv->pdev = pdev;
-	priv->net_dev = dev;
-
-	return 0;
-
-out_unregister_mdio:
-	if (priv->mii_bus) {
-		mdiobus_unregister(priv->mii_bus);
-		kfree(priv->mii_bus->irq);
-	}
-
-out_free_mdio:
-	if (priv->mii_bus)
-		mdiobus_free(priv->mii_bus);
-
-out_uninit_hw:
-	/* turn off mdc clock */
-	enet_writel(priv, 0, ENET_MIISC_REG);
-	if (priv->phy_clk) {
-		clk_disable(priv->phy_clk);
-		clk_put(priv->phy_clk);
-	}
-
-out_put_clk_mac:
-	clk_disable(priv->mac_clk);
-	clk_put(priv->mac_clk);
-
-out_unmap:
-	iounmap(priv->base);
-
-out_release_mem:
-	release_mem_region(res_mem->start, iomem_size);
-out:
-	free_netdev(dev);
-	return ret;
-}
-
-
-/*
- * exit func, stops hardware and unregisters netdevice
- */
-static int __devexit bcm_enet_remove(struct platform_device *pdev)
-{
-	struct bcm_enet_priv *priv;
-	struct net_device *dev;
-	struct resource *res;
-
-	/* stop netdevice */
-	dev = platform_get_drvdata(pdev);
-	priv = netdev_priv(dev);
-	unregister_netdev(dev);
-
-	/* turn off mdc clock */
-	enet_writel(priv, 0, ENET_MIISC_REG);
-
-	if (priv->has_phy) {
-		mdiobus_unregister(priv->mii_bus);
-		kfree(priv->mii_bus->irq);
-		mdiobus_free(priv->mii_bus);
-	} else {
-		struct bcm63xx_enet_platform_data *pd;
-
-		pd = pdev->dev.platform_data;
-		if (pd && pd->mii_config)
-			pd->mii_config(dev, 0, bcm_enet_mdio_read_mii,
-				       bcm_enet_mdio_write_mii);
-	}
-
-	/* release device resources */
-	iounmap(priv->base);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, resource_size(res));
-
-	/* disable hw block clocks */
-	if (priv->phy_clk) {
-		clk_disable(priv->phy_clk);
-		clk_put(priv->phy_clk);
-	}
-	clk_disable(priv->mac_clk);
-	clk_put(priv->mac_clk);
-
-	platform_set_drvdata(pdev, NULL);
-	free_netdev(dev);
-	return 0;
-}
-
-struct platform_driver bcm63xx_enet_driver = {
-	.probe	= bcm_enet_probe,
-	.remove	= __devexit_p(bcm_enet_remove),
-	.driver	= {
-		.name	= "bcm63xx_enet",
-		.owner  = THIS_MODULE,
-	},
-};
-
-/*
- * reserve & remap memory space shared between all macs
- */
-static int __devinit bcm_enet_shared_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	unsigned int iomem_size;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
-
-	iomem_size = resource_size(res);
-	if (!request_mem_region(res->start, iomem_size, "bcm63xx_enet_dma"))
-		return -EBUSY;
-
-	bcm_enet_shared_base = ioremap(res->start, iomem_size);
-	if (!bcm_enet_shared_base) {
-		release_mem_region(res->start, iomem_size);
-		return -ENOMEM;
-	}
-	return 0;
-}
-
-static int __devexit bcm_enet_shared_remove(struct platform_device *pdev)
-{
-	struct resource *res;
-
-	iounmap(bcm_enet_shared_base);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, resource_size(res));
-	return 0;
-}
-
-/*
- * this "shared" driver is needed because both macs share a single
- * address space
- */
-struct platform_driver bcm63xx_enet_shared_driver = {
-	.probe	= bcm_enet_shared_probe,
-	.remove	= __devexit_p(bcm_enet_shared_remove),
-	.driver	= {
-		.name	= "bcm63xx_enet_shared",
-		.owner  = THIS_MODULE,
-	},
-};
-
-/*
- * entry point
- */
-static int __init bcm_enet_init(void)
-{
-	int ret;
-
-	ret = platform_driver_register(&bcm63xx_enet_shared_driver);
-	if (ret)
-		return ret;
-
-	ret = platform_driver_register(&bcm63xx_enet_driver);
-	if (ret)
-		platform_driver_unregister(&bcm63xx_enet_shared_driver);
-
-	return ret;
-}
-
-static void __exit bcm_enet_exit(void)
-{
-	platform_driver_unregister(&bcm63xx_enet_driver);
-	platform_driver_unregister(&bcm63xx_enet_shared_driver);
-}
-
-
-module_init(bcm_enet_init);
-module_exit(bcm_enet_exit);
-
-MODULE_DESCRIPTION("BCM63xx internal ethernet mac driver");
-MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
-MODULE_LICENSE("GPL");