net: adi: remove blackfin ethernet drivers

The blackfin architecture is getting removed, so the bfin_mac driver
is now obsolete.

Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Aaron Wu <aaron.wu@analog.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 1881 deletions

diff --git a/drivers/net/ethernet/adi/bfin_mac.c b/drivers/net/ethernet/adi/bfin_mac.c
deleted file mode 100644
index 7120f2b9c6ef..000000000000
--- a/drivers/net/ethernet/adi/bfin_mac.c
+++ /dev/null
@@ -1,1881 +0,0 @@
-/*
- * Blackfin On-Chip MAC Driver
- *
- * Copyright 2004-2010 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- *
- * Licensed under the GPL-2 or later.
- */
-
-#define DRV_VERSION	"1.1"
-#define DRV_DESC	"Blackfin on-chip Ethernet MAC driver"
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/crc32.h>
-#include <linux/device.h>
-#include <linux/spinlock.h>
-#include <linux/mii.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/skbuff.h>
-#include <linux/platform_device.h>
-
-#include <asm/dma.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/div64.h>
-#include <asm/dpmc.h>
-#include <asm/blackfin.h>
-#include <asm/cacheflush.h>
-#include <asm/portmux.h>
-#include <mach/pll.h>
-
-#include "bfin_mac.h"
-
-MODULE_AUTHOR("Bryan Wu, Luke Yang");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION(DRV_DESC);
-MODULE_ALIAS("platform:bfin_mac");
-
-#if defined(CONFIG_BFIN_MAC_USE_L1)
-# define bfin_mac_alloc(dma_handle, size, num)  l1_data_sram_zalloc(size*num)
-# define bfin_mac_free(dma_handle, ptr, num)    l1_data_sram_free(ptr)
-#else
-# define bfin_mac_alloc(dma_handle, size, num) \
-	dma_alloc_coherent(NULL, size*num, dma_handle, GFP_KERNEL)
-# define bfin_mac_free(dma_handle, ptr, num) \
-	dma_free_coherent(NULL, sizeof(*ptr)*num, ptr, dma_handle)
-#endif
-
-#define PKT_BUF_SZ 1580
-
-#define MAX_TIMEOUT_CNT	500
-
-/* pointers to maintain transmit list */
-static struct net_dma_desc_tx *tx_list_head;
-static struct net_dma_desc_tx *tx_list_tail;
-static struct net_dma_desc_rx *rx_list_head;
-static struct net_dma_desc_rx *rx_list_tail;
-static struct net_dma_desc_rx *current_rx_ptr;
-static struct net_dma_desc_tx *current_tx_ptr;
-static struct net_dma_desc_tx *tx_desc;
-static struct net_dma_desc_rx *rx_desc;
-
-static void desc_list_free(void)
-{
-	struct net_dma_desc_rx *r;
-	struct net_dma_desc_tx *t;
-	int i;
-#if !defined(CONFIG_BFIN_MAC_USE_L1)
-	dma_addr_t dma_handle = 0;
-#endif
-
-	if (tx_desc) {
-		t = tx_list_head;
-		for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
-			if (t) {
-				if (t->skb) {
-					dev_kfree_skb(t->skb);
-					t->skb = NULL;
-				}
-				t = t->next;
-			}
-		}
-		bfin_mac_free(dma_handle, tx_desc, CONFIG_BFIN_TX_DESC_NUM);
-	}
-
-	if (rx_desc) {
-		r = rx_list_head;
-		for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
-			if (r) {
-				if (r->skb) {
-					dev_kfree_skb(r->skb);
-					r->skb = NULL;
-				}
-				r = r->next;
-			}
-		}
-		bfin_mac_free(dma_handle, rx_desc, CONFIG_BFIN_RX_DESC_NUM);
-	}
-}
-
-static int desc_list_init(struct net_device *dev)
-{
-	int i;
-	struct sk_buff *new_skb;
-#if !defined(CONFIG_BFIN_MAC_USE_L1)
-	/*
-	 * This dma_handle is useless in Blackfin dma_alloc_coherent().
-	 * The real dma handler is the return value of dma_alloc_coherent().
-	 */
-	dma_addr_t dma_handle;
-#endif
-
-	tx_desc = bfin_mac_alloc(&dma_handle,
-				sizeof(struct net_dma_desc_tx),
-				CONFIG_BFIN_TX_DESC_NUM);
-	if (tx_desc == NULL)
-		goto init_error;
-
-	rx_desc = bfin_mac_alloc(&dma_handle,
-				sizeof(struct net_dma_desc_rx),
-				CONFIG_BFIN_RX_DESC_NUM);
-	if (rx_desc == NULL)
-		goto init_error;
-
-	/* init tx_list */
-	tx_list_head = tx_list_tail = tx_desc;
-
-	for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
-		struct net_dma_desc_tx *t = tx_desc + i;
-		struct dma_descriptor *a = &(t->desc_a);
-		struct dma_descriptor *b = &(t->desc_b);
-
-		/*
-		 * disable DMA
-		 * read from memory WNR = 0
-		 * wordsize is 32 bits
-		 * 6 half words is desc size
-		 * large desc flow
-		 */
-		a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
-		a->start_addr = (unsigned long)t->packet;
-		a->x_count = 0;
-		a->next_dma_desc = b;
-
-		/*
-		 * enabled DMA
-		 * write to memory WNR = 1
-		 * wordsize is 32 bits
-		 * disable interrupt
-		 * 6 half words is desc size
-		 * large desc flow
-		 */
-		b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
-		b->start_addr = (unsigned long)(&(t->status));
-		b->x_count = 0;
-
-		t->skb = NULL;
-		tx_list_tail->desc_b.next_dma_desc = a;
-		tx_list_tail->next = t;
-		tx_list_tail = t;
-	}
-	tx_list_tail->next = tx_list_head;	/* tx_list is a circle */
-	tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a);
-	current_tx_ptr = tx_list_head;
-
-	/* init rx_list */
-	rx_list_head = rx_list_tail = rx_desc;
-
-	for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
-		struct net_dma_desc_rx *r = rx_desc + i;
-		struct dma_descriptor *a = &(r->desc_a);
-		struct dma_descriptor *b = &(r->desc_b);
-
-		/* allocate a new skb for next time receive */
-		new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN);
-		if (!new_skb)
-			goto init_error;
-
-		skb_reserve(new_skb, NET_IP_ALIGN);
-		/* Invalidate the data cache of skb->data range when it is write back
-		 * cache. It will prevent overwriting the new data from DMA
-		 */
-		blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
-					 (unsigned long)new_skb->end);
-		r->skb = new_skb;
-
-		/*
-		 * enabled DMA
-		 * write to memory WNR = 1
-		 * wordsize is 32 bits
-		 * disable interrupt
-		 * 6 half words is desc size
-		 * large desc flow
-		 */
-		a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
-		/* since RXDWA is enabled */
-		a->start_addr = (unsigned long)new_skb->data - 2;
-		a->x_count = 0;
-		a->next_dma_desc = b;
-
-		/*
-		 * enabled DMA
-		 * write to memory WNR = 1
-		 * wordsize is 32 bits
-		 * enable interrupt
-		 * 6 half words is desc size
-		 * large desc flow
-		 */
-		b->config = DMAEN | WNR | WDSIZE_32 | DI_EN |
-				NDSIZE_6 | DMAFLOW_LARGE;
-		b->start_addr = (unsigned long)(&(r->status));
-		b->x_count = 0;
-
-		rx_list_tail->desc_b.next_dma_desc = a;
-		rx_list_tail->next = r;
-		rx_list_tail = r;
-	}
-	rx_list_tail->next = rx_list_head;	/* rx_list is a circle */
-	rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a);
-	current_rx_ptr = rx_list_head;
-
-	return 0;
-
-init_error:
-	desc_list_free();
-	pr_err("kmalloc failed\n");
-	return -ENOMEM;
-}
-
-
-/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
-
-/*
- * MII operations
- */
-/* Wait until the previous MDC/MDIO transaction has completed */
-static int bfin_mdio_poll(void)
-{
-	int timeout_cnt = MAX_TIMEOUT_CNT;
-
-	/* poll the STABUSY bit */
-	while ((bfin_read_EMAC_STAADD()) & STABUSY) {
-		udelay(1);
-		if (timeout_cnt-- < 0) {
-			pr_err("wait MDC/MDIO transaction to complete timeout\n");
-			return -ETIMEDOUT;
-		}
-	}
-
-	return 0;
-}
-
-/* Read an off-chip register in a PHY through the MDC/MDIO port */
-static int bfin_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
-{
-	int ret;
-
-	ret = bfin_mdio_poll();
-	if (ret)
-		return ret;
-
-	/* read mode */
-	bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
-				SET_REGAD((u16) regnum) |
-				STABUSY);
-
-	ret = bfin_mdio_poll();
-	if (ret)
-		return ret;
-
-	return (int) bfin_read_EMAC_STADAT();
-}
-
-/* Write an off-chip register in a PHY through the MDC/MDIO port */
-static int bfin_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
-			      u16 value)
-{
-	int ret;
-
-	ret = bfin_mdio_poll();
-	if (ret)
-		return ret;
-
-	bfin_write_EMAC_STADAT((u32) value);
-
-	/* write mode */
-	bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
-				SET_REGAD((u16) regnum) |
-				STAOP |
-				STABUSY);
-
-	return bfin_mdio_poll();
-}
-
-static void bfin_mac_adjust_link(struct net_device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-	struct phy_device *phydev = dev->phydev;
-	unsigned long flags;
-	int new_state = 0;
-
-	spin_lock_irqsave(&lp->lock, flags);
-	if (phydev->link) {
-		/* Now we make sure that we can be in full duplex mode.
-		 * If not, we operate in half-duplex mode. */
-		if (phydev->duplex != lp->old_duplex) {
-			u32 opmode = bfin_read_EMAC_OPMODE();
-			new_state = 1;
-
-			if (phydev->duplex)
-				opmode |= FDMODE;
-			else
-				opmode &= ~(FDMODE);
-
-			bfin_write_EMAC_OPMODE(opmode);
-			lp->old_duplex = phydev->duplex;
-		}
-
-		if (phydev->speed != lp->old_speed) {
-			if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
-				u32 opmode = bfin_read_EMAC_OPMODE();
-				switch (phydev->speed) {
-				case 10:
-					opmode |= RMII_10;
-					break;
-				case 100:
-					opmode &= ~RMII_10;
-					break;
-				default:
-					netdev_warn(dev,
-						"Ack! Speed (%d) is not 10/100!\n",
-						phydev->speed);
-					break;
-				}
-				bfin_write_EMAC_OPMODE(opmode);
-			}
-
-			new_state = 1;
-			lp->old_speed = phydev->speed;
-		}
-
-		if (!lp->old_link) {
-			new_state = 1;
-			lp->old_link = 1;
-		}
-	} else if (lp->old_link) {
-		new_state = 1;
-		lp->old_link = 0;
-		lp->old_speed = 0;
-		lp->old_duplex = -1;
-	}
-
-	if (new_state) {
-		u32 opmode = bfin_read_EMAC_OPMODE();
-		phy_print_status(phydev);
-		pr_debug("EMAC_OPMODE = 0x%08x\n", opmode);
-	}
-
-	spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-/* MDC  = 2.5 MHz */
-#define MDC_CLK 2500000
-
-static int mii_probe(struct net_device *dev, int phy_mode)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-	struct phy_device *phydev;
-	unsigned short sysctl;
-	u32 sclk, mdc_div;
-
-	/* Enable PHY output early */
-	if (!(bfin_read_VR_CTL() & CLKBUFOE))
-		bfin_write_VR_CTL(bfin_read_VR_CTL() | CLKBUFOE);
-
-	sclk = get_sclk();
-	mdc_div = ((sclk / MDC_CLK) / 2) - 1;
-
-	sysctl = bfin_read_EMAC_SYSCTL();
-	sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div);
-	bfin_write_EMAC_SYSCTL(sysctl);
-
-	phydev = phy_find_first(lp->mii_bus);
-	if (!phydev) {
-		netdev_err(dev, "no phy device found\n");
-		return -ENODEV;
-	}
-
-	if (phy_mode != PHY_INTERFACE_MODE_RMII &&
-		phy_mode != PHY_INTERFACE_MODE_MII) {
-		netdev_err(dev, "invalid phy interface mode\n");
-		return -EINVAL;
-	}
-
-	phydev = phy_connect(dev, phydev_name(phydev),
-			     &bfin_mac_adjust_link, phy_mode);
-
-	if (IS_ERR(phydev)) {
-		netdev_err(dev, "could not attach 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_Asym_Pause
-			      | SUPPORTED_MII
-			      | SUPPORTED_TP);
-
-	phydev->advertising = phydev->supported;
-
-	lp->old_link = 0;
-	lp->old_speed = 0;
-	lp->old_duplex = -1;
-
-	phy_attached_print(phydev, "mdc_clk=%dHz(mdc_div=%d)@sclk=%dMHz)\n",
-			   MDC_CLK, mdc_div, sclk / 1000000);
-
-	return 0;
-}
-
-/*
- * Ethtool support
- */
-
-/*
- * interrupt routine for magic packet wakeup
- */
-static irqreturn_t bfin_mac_wake_interrupt(int irq, void *dev_id)
-{
-	return IRQ_HANDLED;
-}
-
-static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev,
-					struct ethtool_drvinfo *info)
-{
-	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
-	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
-	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
-	strlcpy(info->bus_info, dev_name(&dev->dev), sizeof(info->bus_info));
-}
-
-static void bfin_mac_ethtool_getwol(struct net_device *dev,
-	struct ethtool_wolinfo *wolinfo)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-
-	wolinfo->supported = WAKE_MAGIC;
-	wolinfo->wolopts = lp->wol;
-}
-
-static int bfin_mac_ethtool_setwol(struct net_device *dev,
-	struct ethtool_wolinfo *wolinfo)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-	int rc;
-
-	if (wolinfo->wolopts & (WAKE_MAGICSECURE |
-				WAKE_UCAST |
-				WAKE_MCAST |
-				WAKE_BCAST |
-				WAKE_ARP))
-		return -EOPNOTSUPP;
-
-	lp->wol = wolinfo->wolopts;
-
-	if (lp->wol && !lp->irq_wake_requested) {
-		/* register wake irq handler */
-		rc = request_irq(IRQ_MAC_WAKEDET, bfin_mac_wake_interrupt,
-				 0, "EMAC_WAKE", dev);
-		if (rc)
-			return rc;
-		lp->irq_wake_requested = true;
-	}
-
-	if (!lp->wol && lp->irq_wake_requested) {
-		free_irq(IRQ_MAC_WAKEDET, dev);
-		lp->irq_wake_requested = false;
-	}
-
-	/* Make sure the PHY driver doesn't suspend */
-	device_init_wakeup(&dev->dev, lp->wol);
-
-	return 0;
-}
-
-#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
-static int bfin_mac_ethtool_get_ts_info(struct net_device *dev,
-	struct ethtool_ts_info *info)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-
-	info->so_timestamping =
-		SOF_TIMESTAMPING_TX_HARDWARE |
-		SOF_TIMESTAMPING_RX_HARDWARE |
-		SOF_TIMESTAMPING_RAW_HARDWARE;
-	info->phc_index = lp->phc_index;
-	info->tx_types =
-		(1 << HWTSTAMP_TX_OFF) |
-		(1 << HWTSTAMP_TX_ON);
-	info->rx_filters =
-		(1 << HWTSTAMP_FILTER_NONE) |
-		(1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT);
-	return 0;
-}
-#endif
-
-static const struct ethtool_ops bfin_mac_ethtool_ops = {
-	.get_link = ethtool_op_get_link,
-	.get_drvinfo = bfin_mac_ethtool_getdrvinfo,
-	.get_wol = bfin_mac_ethtool_getwol,
-	.set_wol = bfin_mac_ethtool_setwol,
-#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
-	.get_ts_info = bfin_mac_ethtool_get_ts_info,
-#endif
-	.get_link_ksettings = phy_ethtool_get_link_ksettings,
-	.set_link_ksettings = phy_ethtool_set_link_ksettings,
-};
-
-/**************************************************************************/
-static void setup_system_regs(struct net_device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-	int i;
-	unsigned short sysctl;
-
-	/*
-	 * Odd word alignment for Receive Frame DMA word
-	 * Configure checksum support and rcve frame word alignment
-	 */
-	sysctl = bfin_read_EMAC_SYSCTL();
-	/*
-	 * check if interrupt is requested for any PHY,
-	 * enable PHY interrupt only if needed
-	 */
-	for (i = 0; i < PHY_MAX_ADDR; ++i)
-		if (lp->mii_bus->irq[i] != PHY_POLL)
-			break;
-	if (i < PHY_MAX_ADDR)
-		sysctl |= PHYIE;
-	sysctl |= RXDWA;
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
-	sysctl |= RXCKS;
-#else
-	sysctl &= ~RXCKS;
-#endif
-	bfin_write_EMAC_SYSCTL(sysctl);
-
-	bfin_write_EMAC_MMC_CTL(RSTC | CROLL);
-
-	/* Set vlan regs to let 1522 bytes long packets pass through */
-	bfin_write_EMAC_VLAN1(lp->vlan1_mask);
-	bfin_write_EMAC_VLAN2(lp->vlan2_mask);
-
-	/* Initialize the TX DMA channel registers */
-	bfin_write_DMA2_X_COUNT(0);
-	bfin_write_DMA2_X_MODIFY(4);
-	bfin_write_DMA2_Y_COUNT(0);
-	bfin_write_DMA2_Y_MODIFY(0);
-
-	/* Initialize the RX DMA channel registers */
-	bfin_write_DMA1_X_COUNT(0);
-	bfin_write_DMA1_X_MODIFY(4);
-	bfin_write_DMA1_Y_COUNT(0);
-	bfin_write_DMA1_Y_MODIFY(0);
-}
-
-static void setup_mac_addr(u8 *mac_addr)
-{
-	u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]);
-	u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]);
-
-	/* this depends on a little-endian machine */
-	bfin_write_EMAC_ADDRLO(addr_low);
-	bfin_write_EMAC_ADDRHI(addr_hi);
-}
-
-static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
-{
-	struct sockaddr *addr = p;
-	if (netif_running(dev))
-		return -EBUSY;
-	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
-	setup_mac_addr(dev->dev_addr);
-	return 0;
-}
-
-#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
-#define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE)
-
-static u32 bfin_select_phc_clock(u32 input_clk, unsigned int *shift_result)
-{
-	u32 ipn = 1000000000UL / input_clk;
-	u32 ppn = 1;
-	unsigned int shift = 0;
-
-	while (ppn <= ipn) {
-		ppn <<= 1;
-		shift++;
-	}
-	*shift_result = shift;
-	return 1000000000UL / ppn;
-}
-
-static int bfin_mac_hwtstamp_set(struct net_device *netdev,
-				 struct ifreq *ifr)
-{
-	struct hwtstamp_config config;
-	struct bfin_mac_local *lp = netdev_priv(netdev);
-	u16 ptpctl;
-	u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff;
-
-	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
-		return -EFAULT;
-
-	pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
-			__func__, config.flags, config.tx_type, config.rx_filter);
-
-	/* reserved for future extensions */
-	if (config.flags)
-		return -EINVAL;
-
-	if ((config.tx_type != HWTSTAMP_TX_OFF) &&
-			(config.tx_type != HWTSTAMP_TX_ON))
-		return -ERANGE;
-
-	ptpctl = bfin_read_EMAC_PTP_CTL();
-
-	switch (config.rx_filter) {
-	case HWTSTAMP_FILTER_NONE:
-		/*
-		 * Dont allow any timestamping
-		 */
-		ptpfv3 = 0xFFFFFFFF;
-		bfin_write_EMAC_PTP_FV3(ptpfv3);
-		break;
-	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
-	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
-	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
-		/*
-		 * Clear the five comparison mask bits (bits[12:8]) in EMAC_PTP_CTL)
-		 * to enable all the field matches.
-		 */
-		ptpctl &= ~0x1F00;
-		bfin_write_EMAC_PTP_CTL(ptpctl);
-		/*
-		 * Keep the default values of the EMAC_PTP_FOFF register.
-		 */
-		ptpfoff = 0x4A24170C;
-		bfin_write_EMAC_PTP_FOFF(ptpfoff);
-		/*
-		 * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
-		 * registers.
-		 */
-		ptpfv1 = 0x11040800;
-		bfin_write_EMAC_PTP_FV1(ptpfv1);
-		ptpfv2 = 0x0140013F;
-		bfin_write_EMAC_PTP_FV2(ptpfv2);
-		/*
-		 * The default value (0xFFFC) allows the timestamping of both
-		 * received Sync messages and Delay_Req messages.
-		 */
-		ptpfv3 = 0xFFFFFFFC;
-		bfin_write_EMAC_PTP_FV3(ptpfv3);
-
-		config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
-		break;
-	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
-	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
-	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
-		/* Clear all five comparison mask bits (bits[12:8]) in the
-		 * EMAC_PTP_CTL register to enable all the field matches.
-		 */
-		ptpctl &= ~0x1F00;
-		bfin_write_EMAC_PTP_CTL(ptpctl);
-		/*
-		 * Keep the default values of the EMAC_PTP_FOFF register, except set
-		 * the PTPCOF field to 0x2A.
-		 */
-		ptpfoff = 0x2A24170C;
-		bfin_write_EMAC_PTP_FOFF(ptpfoff);
-		/*
-		 * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
-		 * registers.
-		 */
-		ptpfv1 = 0x11040800;
-		bfin_write_EMAC_PTP_FV1(ptpfv1);
-		ptpfv2 = 0x0140013F;
-		bfin_write_EMAC_PTP_FV2(ptpfv2);
-		/*
-		 * To allow the timestamping of Pdelay_Req and Pdelay_Resp, set
-		 * the value to 0xFFF0.
-		 */
-		ptpfv3 = 0xFFFFFFF0;
-		bfin_write_EMAC_PTP_FV3(ptpfv3);
-
-		config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
-		break;
-	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
-	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
-	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
-		/*
-		 * Clear bits 8 and 12 of the EMAC_PTP_CTL register to enable only the
-		 * EFTM and PTPCM field comparison.
-		 */
-		ptpctl &= ~0x1100;
-		bfin_write_EMAC_PTP_CTL(ptpctl);
-		/*
-		 * Keep the default values of all the fields of the EMAC_PTP_FOFF
-		 * register, except set the PTPCOF field to 0x0E.
-		 */
-		ptpfoff = 0x0E24170C;
-		bfin_write_EMAC_PTP_FOFF(ptpfoff);
-		/*
-		 * Program bits [15:0] of the EMAC_PTP_FV1 register to 0x88F7, which
-		 * corresponds to PTP messages on the MAC layer.
-		 */
-		ptpfv1 = 0x110488F7;
-		bfin_write_EMAC_PTP_FV1(ptpfv1);
-		ptpfv2 = 0x0140013F;
-		bfin_write_EMAC_PTP_FV2(ptpfv2);
-		/*
-		 * To allow the timestamping of Pdelay_Req and Pdelay_Resp
-		 * messages, set the value to 0xFFF0.
-		 */
-		ptpfv3 = 0xFFFFFFF0;
-		bfin_write_EMAC_PTP_FV3(ptpfv3);
-
-		config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
-		break;
-	default:
-		return -ERANGE;
-	}
-
-	if (config.tx_type == HWTSTAMP_TX_OFF &&
-	    bfin_mac_hwtstamp_is_none(config.rx_filter)) {
-		ptpctl &= ~PTP_EN;
-		bfin_write_EMAC_PTP_CTL(ptpctl);
-
-		SSYNC();
-	} else {
-		ptpctl |= PTP_EN;
-		bfin_write_EMAC_PTP_CTL(ptpctl);
-
-		/*
-		 * clear any existing timestamp
-		 */
-		bfin_read_EMAC_PTP_RXSNAPLO();
-		bfin_read_EMAC_PTP_RXSNAPHI();
-
-		bfin_read_EMAC_PTP_TXSNAPLO();
-		bfin_read_EMAC_PTP_TXSNAPHI();
-
-		SSYNC();
-	}
-
-	lp->stamp_cfg = config;
-	return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-		-EFAULT : 0;
-}
-
-static int bfin_mac_hwtstamp_get(struct net_device *netdev,
-				 struct ifreq *ifr)
-{
-	struct bfin_mac_local *lp = netdev_priv(netdev);
-
-	return copy_to_user(ifr->ifr_data, &lp->stamp_cfg,
-			    sizeof(lp->stamp_cfg)) ?
-		-EFAULT : 0;
-}
-
-static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
-{
-	struct bfin_mac_local *lp = netdev_priv(netdev);
-
-	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
-		int timeout_cnt = MAX_TIMEOUT_CNT;
-
-		/* When doing time stamping, keep the connection to the socket
-		 * a while longer
-		 */
-		skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-
-		/*
-		 * The timestamping is done at the EMAC module's MII/RMII interface
-		 * when the module sees the Start of Frame of an event message packet. This
-		 * interface is the closest possible place to the physical Ethernet transmission
-		 * medium, providing the best timing accuracy.
-		 */
-		while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt))
-			udelay(1);
-		if (timeout_cnt == 0)
-			netdev_err(netdev, "timestamp the TX packet failed\n");
-		else {
-			struct skb_shared_hwtstamps shhwtstamps;
-			u64 ns;
-			u64 regval;
-
-			regval = bfin_read_EMAC_PTP_TXSNAPLO();
-			regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
-			memset(&shhwtstamps, 0, sizeof(shhwtstamps));
-			ns = regval << lp->shift;
-			shhwtstamps.hwtstamp = ns_to_ktime(ns);
-			skb_tstamp_tx(skb, &shhwtstamps);
-		}
-	}
-}
-
-static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
-{
-	struct bfin_mac_local *lp = netdev_priv(netdev);
-	u32 valid;
-	u64 regval, ns;
-	struct skb_shared_hwtstamps *shhwtstamps;
-
-	if (bfin_mac_hwtstamp_is_none(lp->stamp_cfg.rx_filter))
-		return;
-
-	valid = bfin_read_EMAC_PTP_ISTAT() & RXEL;
-	if (!valid)
-		return;
-
-	shhwtstamps = skb_hwtstamps(skb);
-
-	regval = bfin_read_EMAC_PTP_RXSNAPLO();
-	regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32;
-	ns = regval << lp->shift;
-	memset(shhwtstamps, 0, sizeof(*shhwtstamps));
-	shhwtstamps->hwtstamp = ns_to_ktime(ns);
-}
-
-static void bfin_mac_hwtstamp_init(struct net_device *netdev)
-{
-	struct bfin_mac_local *lp = netdev_priv(netdev);
-	u64 addend, ppb;
-	u32 input_clk, phc_clk;
-
-	/* Initialize hardware timer */
-	input_clk = get_sclk();
-	phc_clk = bfin_select_phc_clock(input_clk, &lp->shift);
-	addend = phc_clk * (1ULL << 32);
-	do_div(addend, input_clk);
-	bfin_write_EMAC_PTP_ADDEND((u32)addend);
-
-	lp->addend = addend;
-	ppb = 1000000000ULL * input_clk;
-	do_div(ppb, phc_clk);
-	lp->max_ppb = ppb - 1000000000ULL - 1ULL;
-
-	/* Initialize hwstamp config */
-	lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
-	lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
-}
-
-static u64 bfin_ptp_time_read(struct bfin_mac_local *lp)
-{
-	u64 ns;
-	u32 lo, hi;
-
-	lo = bfin_read_EMAC_PTP_TIMELO();
-	hi = bfin_read_EMAC_PTP_TIMEHI();
-
-	ns = ((u64) hi) << 32;
-	ns |= lo;
-	ns <<= lp->shift;
-
-	return ns;
-}
-
-static void bfin_ptp_time_write(struct bfin_mac_local *lp, u64 ns)
-{
-	u32 hi, lo;
-
-	ns >>= lp->shift;
-	hi = ns >> 32;
-	lo = ns & 0xffffffff;
-
-	bfin_write_EMAC_PTP_TIMELO(lo);
-	bfin_write_EMAC_PTP_TIMEHI(hi);
-}
-
-/* PTP Hardware Clock operations */
-
-static int bfin_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
-{
-	u64 adj;
-	u32 diff, addend;
-	int neg_adj = 0;
-	struct bfin_mac_local *lp =
-		container_of(ptp, struct bfin_mac_local, caps);
-
-	if (ppb < 0) {
-		neg_adj = 1;
-		ppb = -ppb;
-	}
-	addend = lp->addend;
-	adj = addend;
-	adj *= ppb;
-	diff = div_u64(adj, 1000000000ULL);
-
-	addend = neg_adj ? addend - diff : addend + diff;
-
-	bfin_write_EMAC_PTP_ADDEND(addend);
-
-	return 0;
-}
-
-static int bfin_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
-{
-	s64 now;
-	unsigned long flags;
-	struct bfin_mac_local *lp =
-		container_of(ptp, struct bfin_mac_local, caps);
-
-	spin_lock_irqsave(&lp->phc_lock, flags);
-
-	now = bfin_ptp_time_read(lp);
-	now += delta;
-	bfin_ptp_time_write(lp, now);
-
-	spin_unlock_irqrestore(&lp->phc_lock, flags);
-
-	return 0;
-}
-
-static int bfin_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
-{
-	u64 ns;
-	unsigned long flags;
-	struct bfin_mac_local *lp =
-		container_of(ptp, struct bfin_mac_local, caps);
-
-	spin_lock_irqsave(&lp->phc_lock, flags);
-
-	ns = bfin_ptp_time_read(lp);
-
-	spin_unlock_irqrestore(&lp->phc_lock, flags);
-
-	*ts = ns_to_timespec64(ns);
-
-	return 0;
-}
-
-static int bfin_ptp_settime(struct ptp_clock_info *ptp,
-			   const struct timespec64 *ts)
-{
-	u64 ns;
-	unsigned long flags;
-	struct bfin_mac_local *lp =
-		container_of(ptp, struct bfin_mac_local, caps);
-
-	ns = timespec64_to_ns(ts);
-
-	spin_lock_irqsave(&lp->phc_lock, flags);
-
-	bfin_ptp_time_write(lp, ns);
-
-	spin_unlock_irqrestore(&lp->phc_lock, flags);
-
-	return 0;
-}
-
-static int bfin_ptp_enable(struct ptp_clock_info *ptp,
-			  struct ptp_clock_request *rq, int on)
-{
-	return -EOPNOTSUPP;
-}
-
-static const struct ptp_clock_info bfin_ptp_caps = {
-	.owner		= THIS_MODULE,
-	.name		= "BF518 clock",
-	.max_adj	= 0,
-	.n_alarm	= 0,
-	.n_ext_ts	= 0,
-	.n_per_out	= 0,
-	.n_pins		= 0,
-	.pps		= 0,
-	.adjfreq	= bfin_ptp_adjfreq,
-	.adjtime	= bfin_ptp_adjtime,
-	.gettime64	= bfin_ptp_gettime,
-	.settime64	= bfin_ptp_settime,
-	.enable		= bfin_ptp_enable,
-};
-
-static int bfin_phc_init(struct net_device *netdev, struct device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(netdev);
-
-	lp->caps = bfin_ptp_caps;
-	lp->caps.max_adj = lp->max_ppb;
-	lp->clock = ptp_clock_register(&lp->caps, dev);
-	if (IS_ERR(lp->clock))
-		return PTR_ERR(lp->clock);
-
-	lp->phc_index = ptp_clock_index(lp->clock);
-	spin_lock_init(&lp->phc_lock);
-
-	return 0;
-}
-
-static void bfin_phc_release(struct bfin_mac_local *lp)
-{
-	ptp_clock_unregister(lp->clock);
-}
-
-#else
-# define bfin_mac_hwtstamp_is_none(cfg) 0
-# define bfin_mac_hwtstamp_init(dev)
-# define bfin_mac_hwtstamp_set(dev, ifr) (-EOPNOTSUPP)
-# define bfin_mac_hwtstamp_get(dev, ifr) (-EOPNOTSUPP)
-# define bfin_rx_hwtstamp(dev, skb)
-# define bfin_tx_hwtstamp(dev, skb)
-# define bfin_phc_init(netdev, dev) 0
-# define bfin_phc_release(lp)
-#endif
-
-static inline void _tx_reclaim_skb(void)
-{
-	do {
-		tx_list_head->desc_a.config &= ~DMAEN;
-		tx_list_head->status.status_word = 0;
-		if (tx_list_head->skb) {
-			dev_consume_skb_any(tx_list_head->skb);
-			tx_list_head->skb = NULL;
-		}
-		tx_list_head = tx_list_head->next;
-
-	} while (tx_list_head->status.status_word != 0);
-}
-
-static void tx_reclaim_skb(struct bfin_mac_local *lp)
-{
-	int timeout_cnt = MAX_TIMEOUT_CNT;
-
-	if (tx_list_head->status.status_word != 0)
-		_tx_reclaim_skb();
-
-	if (current_tx_ptr->next == tx_list_head) {
-		while (tx_list_head->status.status_word == 0) {
-			/* slow down polling to avoid too many queue stop. */
-			udelay(10);
-			/* reclaim skb if DMA is not running. */
-			if (!(bfin_read_DMA2_IRQ_STATUS() & DMA_RUN))
-				break;
-			if (timeout_cnt-- < 0)
-				break;
-		}
-
-		if (timeout_cnt >= 0)
-			_tx_reclaim_skb();
-		else
-			netif_stop_queue(lp->ndev);
-	}
-
-	if (current_tx_ptr->next != tx_list_head &&
-		netif_queue_stopped(lp->ndev))
-		netif_wake_queue(lp->ndev);
-
-	if (tx_list_head != current_tx_ptr) {
-		/* shorten the timer interval if tx queue is stopped */
-		if (netif_queue_stopped(lp->ndev))
-			lp->tx_reclaim_timer.expires =
-				jiffies + (TX_RECLAIM_JIFFIES >> 4);
-		else
-			lp->tx_reclaim_timer.expires =
-				jiffies + TX_RECLAIM_JIFFIES;
-
-		mod_timer(&lp->tx_reclaim_timer,
-			lp->tx_reclaim_timer.expires);
-	}
-
-	return;
-}
-
-static void tx_reclaim_skb_timeout(struct timer_list *t)
-{
-	struct bfin_mac_local *lp = from_timer(lp, t, tx_reclaim_timer);
-
-	tx_reclaim_skb(lp);
-}
-
-static int bfin_mac_hard_start_xmit(struct sk_buff *skb,
-				struct net_device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-	u16 *data;
-	u32 data_align = (unsigned long)(skb->data) & 0x3;
-
-	current_tx_ptr->skb = skb;
-
-	if (data_align == 0x2) {
-		/* move skb->data to current_tx_ptr payload */
-		data = (u16 *)(skb->data) - 1;
-		*data = (u16)(skb->len);
-		/*
-		 * When transmitting an Ethernet packet, the PTP_TSYNC module requires
-		 * a DMA_Length_Word field associated with the packet. The lower 12 bits
-		 * of this field are the length of the packet payload in bytes and the higher
-		 * 4 bits are the timestamping enable field.
-		 */
-		if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
-			*data |= 0x1000;
-
-		current_tx_ptr->desc_a.start_addr = (u32)data;
-		/* this is important! */
-		blackfin_dcache_flush_range((u32)data,
-				(u32)((u8 *)data + skb->len + 4));
-	} else {
-		*((u16 *)(current_tx_ptr->packet)) = (u16)(skb->len);
-		/* enable timestamping for the sent packet */
-		if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
-			*((u16 *)(current_tx_ptr->packet)) |= 0x1000;
-		memcpy((u8 *)(current_tx_ptr->packet + 2), skb->data,
-			skb->len);
-		current_tx_ptr->desc_a.start_addr =
-			(u32)current_tx_ptr->packet;
-		blackfin_dcache_flush_range(
-			(u32)current_tx_ptr->packet,
-			(u32)(current_tx_ptr->packet + skb->len + 2));
-	}
-
-	/* make sure the internal data buffers in the core are drained
-	 * so that the DMA descriptors are completely written when the
-	 * DMA engine goes to fetch them below
-	 */
-	SSYNC();
-
-	/* always clear status buffer before start tx dma */
-	current_tx_ptr->status.status_word = 0;
-
-	/* enable this packet's dma */
-	current_tx_ptr->desc_a.config |= DMAEN;
-
-	/* tx dma is running, just return */
-	if (bfin_read_DMA2_IRQ_STATUS() & DMA_RUN)
-		goto out;
-
-	/* tx dma is not running */
-	bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a));
-	/* dma enabled, read from memory, size is 6 */
-	bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config);
-	/* Turn on the EMAC tx */
-	bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
-
-out:
-	bfin_tx_hwtstamp(dev, skb);
-
-	current_tx_ptr = current_tx_ptr->next;
-	dev->stats.tx_packets++;
-	dev->stats.tx_bytes += (skb->len);
-
-	tx_reclaim_skb(lp);
-
-	return NETDEV_TX_OK;
-}
-
-#define IP_HEADER_OFF  0
-#define RX_ERROR_MASK (RX_LONG | RX_ALIGN | RX_CRC | RX_LEN | \
-	RX_FRAG | RX_ADDR | RX_DMAO | RX_PHY | RX_LATE | RX_RANGE)
-
-static void bfin_mac_rx(struct bfin_mac_local *lp)
-{
-	struct net_device *dev = lp->ndev;
-	struct sk_buff *skb, *new_skb;
-	unsigned short len;
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
-	unsigned int i;
-	unsigned char fcs[ETH_FCS_LEN + 1];
-#endif
-
-	/* check if frame status word reports an error condition
-	 * we which case we simply drop the packet
-	 */
-	if (current_rx_ptr->status.status_word & RX_ERROR_MASK) {
-		netdev_notice(dev, "rx: receive error - packet dropped\n");
-		dev->stats.rx_dropped++;
-		goto out;
-	}
-
-	/* allocate a new skb for next time receive */
-	skb = current_rx_ptr->skb;
-
-	new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN);
-	if (!new_skb) {
-		dev->stats.rx_dropped++;
-		goto out;
-	}
-	/* reserve 2 bytes for RXDWA padding */
-	skb_reserve(new_skb, NET_IP_ALIGN);
-	/* Invalidate the data cache of skb->data range when it is write back
-	 * cache. It will prevent overwriting the new data from DMA
-	 */
-	blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
-					 (unsigned long)new_skb->end);
-
-	current_rx_ptr->skb = new_skb;
-	current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2;
-
-	len = (unsigned short)(current_rx_ptr->status.status_word & RX_FRLEN);
-	/* Deduce Ethernet FCS length from Ethernet payload length */
-	len -= ETH_FCS_LEN;
-	skb_put(skb, len);
-
-	skb->protocol = eth_type_trans(skb, dev);
-
-	bfin_rx_hwtstamp(dev, skb);
-
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
-	/* Checksum offloading only works for IPv4 packets with the standard IP header
-	 * length of 20 bytes, because the blackfin MAC checksum calculation is
-	 * based on that assumption. We must NOT use the calculated checksum if our
-	 * IP version or header break that assumption.
-	 */
-	if (skb->data[IP_HEADER_OFF] == 0x45) {
-		skb->csum = current_rx_ptr->status.ip_payload_csum;
-		/*
-		 * Deduce Ethernet FCS from hardware generated IP payload checksum.
-		 * IP checksum is based on 16-bit one's complement algorithm.
-		 * To deduce a value from checksum is equal to add its inversion.
-		 * If the IP payload len is odd, the inversed FCS should also
-		 * begin from odd address and leave first byte zero.
-		 */
-		if (skb->len % 2) {
-			fcs[0] = 0;
-			for (i = 0; i < ETH_FCS_LEN; i++)
-				fcs[i + 1] = ~skb->data[skb->len + i];
-			skb->csum = csum_partial(fcs, ETH_FCS_LEN + 1, skb->csum);
-		} else {
-			for (i = 0; i < ETH_FCS_LEN; i++)
-				fcs[i] = ~skb->data[skb->len + i];
-			skb->csum = csum_partial(fcs, ETH_FCS_LEN, skb->csum);
-		}
-		skb->ip_summed = CHECKSUM_COMPLETE;
-	}
-#endif
-
-	napi_gro_receive(&lp->napi, skb);
-
-	dev->stats.rx_packets++;
-	dev->stats.rx_bytes += len;
-out:
-	current_rx_ptr->status.status_word = 0x00000000;
-	current_rx_ptr = current_rx_ptr->next;
-}
-
-static int bfin_mac_poll(struct napi_struct *napi, int budget)
-{
-	int i = 0;
-	struct bfin_mac_local *lp = container_of(napi,
-						 struct bfin_mac_local,
-						 napi);
-
-	while (current_rx_ptr->status.status_word != 0 && i < budget) {
-		bfin_mac_rx(lp);
-		i++;
-	}
-
-	if (i < budget) {
-		napi_complete_done(napi, i);
-		if (test_and_clear_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags))
-			enable_irq(IRQ_MAC_RX);
-	}
-
-	return i;
-}
-
-/* interrupt routine to handle rx and error signal */
-static irqreturn_t bfin_mac_interrupt(int irq, void *dev_id)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev_id);
-	u32 status;
-
-	status = bfin_read_DMA1_IRQ_STATUS();
-
-	bfin_write_DMA1_IRQ_STATUS(status | DMA_DONE | DMA_ERR);
-	if (status & DMA_DONE) {
-		disable_irq_nosync(IRQ_MAC_RX);
-		set_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags);
-		napi_schedule(&lp->napi);
-	}
-
-	return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void bfin_mac_poll_controller(struct net_device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-
-	bfin_mac_interrupt(IRQ_MAC_RX, dev);
-	tx_reclaim_skb(lp);
-}
-#endif				/* CONFIG_NET_POLL_CONTROLLER */
-
-static void bfin_mac_disable(void)
-{
-	unsigned int opmode;
-
-	opmode = bfin_read_EMAC_OPMODE();
-	opmode &= (~RE);
-	opmode &= (~TE);
-	/* Turn off the EMAC */
-	bfin_write_EMAC_OPMODE(opmode);
-}
-
-/*
- * Enable Interrupts, Receive, and Transmit
- */
-static int bfin_mac_enable(struct phy_device *phydev)
-{
-	int ret;
-	u32 opmode;
-
-	pr_debug("%s\n", __func__);
-
-	/* Set RX DMA */
-	bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a));
-	bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config);
-
-	/* Wait MII done */
-	ret = bfin_mdio_poll();
-	if (ret)
-		return ret;
-
-	/* We enable only RX here */
-	/* ASTP   : Enable Automatic Pad Stripping
-	   PR     : Promiscuous Mode for test
-	   PSF    : Receive frames with total length less than 64 bytes.
-	   FDMODE : Full Duplex Mode
-	   LB     : Internal Loopback for test
-	   RE     : Receiver Enable */
-	opmode = bfin_read_EMAC_OPMODE();
-	if (opmode & FDMODE)
-		opmode |= PSF;
-	else
-		opmode |= DRO | DC | PSF;
-	opmode |= RE;
-
-	if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
-		opmode |= RMII; /* For Now only 100MBit are supported */
-#if defined(CONFIG_BF537) || defined(CONFIG_BF536)
-		if (__SILICON_REVISION__ < 3) {
-			/*
-			 * This isn't publicly documented (fun times!), but in
-			 * silicon <=0.2, the RX and TX pins are clocked together.
-			 * So in order to recv, we must enable the transmit side
-			 * as well.  This will cause a spurious TX interrupt too,
-			 * but we can easily consume that.
-			 */
-			opmode |= TE;
-		}
-#endif
-	}
-
-	/* Turn on the EMAC rx */
-	bfin_write_EMAC_OPMODE(opmode);
-
-	return 0;
-}
-
-/* Our watchdog timed out. Called by the networking layer */
-static void bfin_mac_timeout(struct net_device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-
-	pr_debug("%s: %s\n", dev->name, __func__);
-
-	bfin_mac_disable();
-
-	del_timer(&lp->tx_reclaim_timer);
-
-	/* reset tx queue and free skb */
-	while (tx_list_head != current_tx_ptr) {
-		tx_list_head->desc_a.config &= ~DMAEN;
-		tx_list_head->status.status_word = 0;
-		if (tx_list_head->skb) {
-			dev_kfree_skb(tx_list_head->skb);
-			tx_list_head->skb = NULL;
-		}
-		tx_list_head = tx_list_head->next;
-	}
-
-	if (netif_queue_stopped(dev))
-		netif_wake_queue(dev);
-
-	bfin_mac_enable(dev->phydev);
-
-	/* We can accept TX packets again */
-	netif_trans_update(dev); /* prevent tx timeout */
-}
-
-static void bfin_mac_multicast_hash(struct net_device *dev)
-{
-	u32 emac_hashhi, emac_hashlo;
-	struct netdev_hw_addr *ha;
-	u32 crc;
-
-	emac_hashhi = emac_hashlo = 0;
-
-	netdev_for_each_mc_addr(ha, dev) {
-		crc = ether_crc(ETH_ALEN, ha->addr);
-		crc >>= 26;
-
-		if (crc & 0x20)
-			emac_hashhi |= 1 << (crc & 0x1f);
-		else
-			emac_hashlo |= 1 << (crc & 0x1f);
-	}
-
-	bfin_write_EMAC_HASHHI(emac_hashhi);
-	bfin_write_EMAC_HASHLO(emac_hashlo);
-}
-
-/*
- * This routine will, depending on the values passed to it,
- * either make it accept multicast packets, go into
- * promiscuous mode (for TCPDUMP and cousins) or accept
- * a select set of multicast packets
- */
-static void bfin_mac_set_multicast_list(struct net_device *dev)
-{
-	u32 sysctl;
-
-	if (dev->flags & IFF_PROMISC) {
-		netdev_info(dev, "set promisc mode\n");
-		sysctl = bfin_read_EMAC_OPMODE();
-		sysctl |= PR;
-		bfin_write_EMAC_OPMODE(sysctl);
-	} else if (dev->flags & IFF_ALLMULTI) {
-		/* accept all multicast */
-		sysctl = bfin_read_EMAC_OPMODE();
-		sysctl |= PAM;
-		bfin_write_EMAC_OPMODE(sysctl);
-	} else if (!netdev_mc_empty(dev)) {
-		/* set up multicast hash table */
-		sysctl = bfin_read_EMAC_OPMODE();
-		sysctl |= HM;
-		bfin_write_EMAC_OPMODE(sysctl);
-		bfin_mac_multicast_hash(dev);
-	} else {
-		/* clear promisc or multicast mode */
-		sysctl = bfin_read_EMAC_OPMODE();
-		sysctl &= ~(RAF | PAM);
-		bfin_write_EMAC_OPMODE(sysctl);
-	}
-}
-
-static int bfin_mac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
-	if (!netif_running(netdev))
-		return -EINVAL;
-
-	switch (cmd) {
-	case SIOCSHWTSTAMP:
-		return bfin_mac_hwtstamp_set(netdev, ifr);
-	case SIOCGHWTSTAMP:
-		return bfin_mac_hwtstamp_get(netdev, ifr);
-	default:
-		if (netdev->phydev)
-			return phy_mii_ioctl(netdev->phydev, ifr, cmd);
-		else
-			return -EOPNOTSUPP;
-	}
-}
-
-/*
- * this puts the device in an inactive state
- */
-static void bfin_mac_shutdown(struct net_device *dev)
-{
-	/* Turn off the EMAC */
-	bfin_write_EMAC_OPMODE(0x00000000);
-	/* Turn off the EMAC RX DMA */
-	bfin_write_DMA1_CONFIG(0x0000);
-	bfin_write_DMA2_CONFIG(0x0000);
-}
-
-/*
- * Open and Initialize the interface
- *
- * Set up everything, reset the card, etc..
- */
-static int bfin_mac_open(struct net_device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-	int ret;
-	pr_debug("%s: %s\n", dev->name, __func__);
-
-	/*
-	 * Check that the address is valid.  If its not, refuse
-	 * to bring the device up.  The user must specify an
-	 * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
-	 */
-	if (!is_valid_ether_addr(dev->dev_addr)) {
-		netdev_warn(dev, "no valid ethernet hw addr\n");
-		return -EINVAL;
-	}
-
-	/* initial rx and tx list */
-	ret = desc_list_init(dev);
-	if (ret)
-		return ret;
-
-	phy_start(dev->phydev);
-	setup_system_regs(dev);
-	setup_mac_addr(dev->dev_addr);
-
-	bfin_mac_disable();
-	ret = bfin_mac_enable(dev->phydev);
-	if (ret)
-		return ret;
-	pr_debug("hardware init finished\n");
-
-	napi_enable(&lp->napi);
-	netif_start_queue(dev);
-	netif_carrier_on(dev);
-
-	return 0;
-}
-
-/*
- * this makes the board clean up everything that it can
- * and not talk to the outside world.   Caused by
- * an 'ifconfig ethX down'
- */
-static int bfin_mac_close(struct net_device *dev)
-{
-	struct bfin_mac_local *lp = netdev_priv(dev);
-	pr_debug("%s: %s\n", dev->name, __func__);
-
-	netif_stop_queue(dev);
-	napi_disable(&lp->napi);
-	netif_carrier_off(dev);
-
-	phy_stop(dev->phydev);
-	phy_write(dev->phydev, MII_BMCR, BMCR_PDOWN);
-
-	/* clear everything */
-	bfin_mac_shutdown(dev);
-
-	/* free the rx/tx buffers */
-	desc_list_free();
-
-	return 0;
-}
-
-static const struct net_device_ops bfin_mac_netdev_ops = {
-	.ndo_open		= bfin_mac_open,
-	.ndo_stop		= bfin_mac_close,
-	.ndo_start_xmit		= bfin_mac_hard_start_xmit,
-	.ndo_set_mac_address	= bfin_mac_set_mac_address,
-	.ndo_tx_timeout		= bfin_mac_timeout,
-	.ndo_set_rx_mode	= bfin_mac_set_multicast_list,
-	.ndo_do_ioctl           = bfin_mac_ioctl,
-	.ndo_validate_addr	= eth_validate_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	.ndo_poll_controller	= bfin_mac_poll_controller,
-#endif
-};
-
-static int bfin_mac_probe(struct platform_device *pdev)
-{
-	struct net_device *ndev;
-	struct bfin_mac_local *lp;
-	struct platform_device *pd;
-	struct bfin_mii_bus_platform_data *mii_bus_data;
-	int rc;
-
-	ndev = alloc_etherdev(sizeof(struct bfin_mac_local));
-	if (!ndev)
-		return -ENOMEM;
-
-	SET_NETDEV_DEV(ndev, &pdev->dev);
-	platform_set_drvdata(pdev, ndev);
-	lp = netdev_priv(ndev);
-	lp->ndev = ndev;
-
-	/* Grab the MAC address in the MAC */
-	*(__le32 *) (&(ndev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO());
-	*(__le16 *) (&(ndev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI());
-
-	/* probe mac */
-	/*todo: how to probe? which is revision_register */
-	bfin_write_EMAC_ADDRLO(0x12345678);
-	if (bfin_read_EMAC_ADDRLO() != 0x12345678) {
-		dev_err(&pdev->dev, "Cannot detect Blackfin on-chip ethernet MAC controller!\n");
-		rc = -ENODEV;
-		goto out_err_probe_mac;
-	}
-
-
-	/*
-	 * Is it valid? (Did bootloader initialize it?)
-	 * Grab the MAC from the board somehow
-	 * this is done in the arch/blackfin/mach-bfxxx/boards/eth_mac.c
-	 */
-	if (!is_valid_ether_addr(ndev->dev_addr)) {
-		if (bfin_get_ether_addr(ndev->dev_addr) ||
-		     !is_valid_ether_addr(ndev->dev_addr)) {
-			/* Still not valid, get a random one */
-			netdev_warn(ndev, "Setting Ethernet MAC to a random one\n");
-			eth_hw_addr_random(ndev);
-		}
-	}
-
-	setup_mac_addr(ndev->dev_addr);
-
-	if (!dev_get_platdata(&pdev->dev)) {
-		dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n");
-		rc = -ENODEV;
-		goto out_err_probe_mac;
-	}
-	pd = dev_get_platdata(&pdev->dev);
-	lp->mii_bus = platform_get_drvdata(pd);
-	if (!lp->mii_bus) {
-		dev_err(&pdev->dev, "Cannot get mii_bus!\n");
-		rc = -ENODEV;
-		goto out_err_probe_mac;
-	}
-	lp->mii_bus->priv = ndev;
-	mii_bus_data = dev_get_platdata(&pd->dev);
-
-	rc = mii_probe(ndev, mii_bus_data->phy_mode);
-	if (rc) {
-		dev_err(&pdev->dev, "MII Probe failed!\n");
-		goto out_err_mii_probe;
-	}
-
-	lp->vlan1_mask = ETH_P_8021Q | mii_bus_data->vlan1_mask;
-	lp->vlan2_mask = ETH_P_8021Q | mii_bus_data->vlan2_mask;
-
-	ndev->netdev_ops = &bfin_mac_netdev_ops;
-	ndev->ethtool_ops = &bfin_mac_ethtool_ops;
-
-	timer_setup(&lp->tx_reclaim_timer, tx_reclaim_skb_timeout, 0);
-
-	lp->flags = 0;
-	netif_napi_add(ndev, &lp->napi, bfin_mac_poll, CONFIG_BFIN_RX_DESC_NUM);
-
-	spin_lock_init(&lp->lock);
-
-	/* now, enable interrupts */
-	/* register irq handler */
-	rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt,
-			0, "EMAC_RX", ndev);
-	if (rc) {
-		dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n");
-		rc = -EBUSY;
-		goto out_err_request_irq;
-	}
-
-	rc = register_netdev(ndev);
-	if (rc) {
-		dev_err(&pdev->dev, "Cannot register net device!\n");
-		goto out_err_reg_ndev;
-	}
-
-	bfin_mac_hwtstamp_init(ndev);
-	rc = bfin_phc_init(ndev, &pdev->dev);
-	if (rc) {
-		dev_err(&pdev->dev, "Cannot register PHC device!\n");
-		goto out_err_phc;
-	}
-
-	/* now, print out the card info, in a short format.. */
-	netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION);
-
-	return 0;
-
-out_err_phc:
-out_err_reg_ndev:
-	free_irq(IRQ_MAC_RX, ndev);
-out_err_request_irq:
-	netif_napi_del(&lp->napi);
-out_err_mii_probe:
-	mdiobus_unregister(lp->mii_bus);
-	mdiobus_free(lp->mii_bus);
-out_err_probe_mac:
-	free_netdev(ndev);
-
-	return rc;
-}
-
-static int bfin_mac_remove(struct platform_device *pdev)
-{
-	struct net_device *ndev = platform_get_drvdata(pdev);
-	struct bfin_mac_local *lp = netdev_priv(ndev);
-
-	bfin_phc_release(lp);
-
-	lp->mii_bus->priv = NULL;
-
-	unregister_netdev(ndev);
-
-	netif_napi_del(&lp->napi);
-
-	free_irq(IRQ_MAC_RX, ndev);
-
-	free_netdev(ndev);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t mesg)
-{
-	struct net_device *net_dev = platform_get_drvdata(pdev);
-	struct bfin_mac_local *lp = netdev_priv(net_dev);
-
-	if (lp->wol) {
-		bfin_write_EMAC_OPMODE((bfin_read_EMAC_OPMODE() & ~TE) | RE);
-		bfin_write_EMAC_WKUP_CTL(MPKE);
-		enable_irq_wake(IRQ_MAC_WAKEDET);
-	} else {
-		if (netif_running(net_dev))
-			bfin_mac_close(net_dev);
-	}
-
-	return 0;
-}
-
-static int bfin_mac_resume(struct platform_device *pdev)
-{
-	struct net_device *net_dev = platform_get_drvdata(pdev);
-	struct bfin_mac_local *lp = netdev_priv(net_dev);
-
-	if (lp->wol) {
-		bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
-		bfin_write_EMAC_WKUP_CTL(0);
-		disable_irq_wake(IRQ_MAC_WAKEDET);
-	} else {
-		if (netif_running(net_dev))
-			bfin_mac_open(net_dev);
-	}
-
-	return 0;
-}
-#else
-#define bfin_mac_suspend NULL
-#define bfin_mac_resume NULL
-#endif	/* CONFIG_PM */
-
-static int bfin_mii_bus_probe(struct platform_device *pdev)
-{
-	struct mii_bus *miibus;
-	struct bfin_mii_bus_platform_data *mii_bus_pd;
-	const unsigned short *pin_req;
-	int rc, i;
-
-	mii_bus_pd = dev_get_platdata(&pdev->dev);
-	if (!mii_bus_pd) {
-		dev_err(&pdev->dev, "No peripherals in platform data!\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * We are setting up a network card,
-	 * so set the GPIO pins to Ethernet mode
-	 */
-	pin_req = mii_bus_pd->mac_peripherals;
-	rc = peripheral_request_list(pin_req, KBUILD_MODNAME);
-	if (rc) {
-		dev_err(&pdev->dev, "Requesting peripherals failed!\n");
-		return rc;
-	}
-
-	rc = -ENOMEM;
-	miibus = mdiobus_alloc();
-	if (miibus == NULL)
-		goto out_err_alloc;
-	miibus->read = bfin_mdiobus_read;
-	miibus->write = bfin_mdiobus_write;
-
-	miibus->parent = &pdev->dev;
-	miibus->name = "bfin_mii_bus";
-	miibus->phy_mask = mii_bus_pd->phy_mask;
-
-	snprintf(miibus->id, MII_BUS_ID_SIZE, "%s-%x",
-		pdev->name, pdev->id);
-
-	rc = clamp(mii_bus_pd->phydev_number, 0, PHY_MAX_ADDR);
-	if (rc != mii_bus_pd->phydev_number)
-		dev_err(&pdev->dev, "Invalid number (%i) of phydevs\n",
-			mii_bus_pd->phydev_number);
-	for (i = 0; i < rc; ++i) {
-		unsigned short phyaddr = mii_bus_pd->phydev_data[i].addr;
-		if (phyaddr < PHY_MAX_ADDR)
-			miibus->irq[phyaddr] = mii_bus_pd->phydev_data[i].irq;
-		else
-			dev_err(&pdev->dev,
-				"Invalid PHY address %i for phydev %i\n",
-				phyaddr, i);
-	}
-
-	rc = mdiobus_register(miibus);
-	if (rc) {
-		dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
-		goto out_err_irq_alloc;
-	}
-
-	platform_set_drvdata(pdev, miibus);
-	return 0;
-
-out_err_irq_alloc:
-	mdiobus_free(miibus);
-out_err_alloc:
-	peripheral_free_list(pin_req);
-
-	return rc;
-}
-
-static int bfin_mii_bus_remove(struct platform_device *pdev)
-{
-	struct mii_bus *miibus = platform_get_drvdata(pdev);
-	struct bfin_mii_bus_platform_data *mii_bus_pd =
-		dev_get_platdata(&pdev->dev);
-
-	mdiobus_unregister(miibus);
-	mdiobus_free(miibus);
-	peripheral_free_list(mii_bus_pd->mac_peripherals);
-
-	return 0;
-}
-
-static struct platform_driver bfin_mii_bus_driver = {
-	.probe = bfin_mii_bus_probe,
-	.remove = bfin_mii_bus_remove,
-	.driver = {
-		.name = "bfin_mii_bus",
-	},
-};
-
-static struct platform_driver bfin_mac_driver = {
-	.probe = bfin_mac_probe,
-	.remove = bfin_mac_remove,
-	.resume = bfin_mac_resume,
-	.suspend = bfin_mac_suspend,
-	.driver = {
-		.name = KBUILD_MODNAME,
-	},
-};
-
-static struct platform_driver * const drivers[] = {
-	&bfin_mii_bus_driver,
-	&bfin_mac_driver,
-};
-
-static int __init bfin_mac_init(void)
-{
-	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
-}
-
-module_init(bfin_mac_init);
-
-static void __exit bfin_mac_cleanup(void)
-{
-	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
-}
-
-module_exit(bfin_mac_cleanup);
-