Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 4195 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c
new file mode 100644
index 000000000..1b43704ba
--- /dev/null
+++ b/drivers/net/ethernet/marvell/skge.c
@@ -0,0 +1,4195 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * New driver for Marvell Yukon chipset and SysKonnect Gigabit
+ * Ethernet adapters. Based on earlier sk98lin, e100 and
+ * FreeBSD if_sk drivers.
+ *
+ * This driver intentionally does not support all the features
+ * of the original driver such as link fail-over and link management because
+ * those should be done at higher levels.
+ *
+ * Copyright (C) 2004, 2005 Stephen Hemminger <shemminger@osdl.org>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/pci.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/delay.h>
+#include <linux/crc32.h>
+#include <linux/dma-mapping.h>
+#include <linux/debugfs.h>
+#include <linux/sched.h>
+#include <linux/seq_file.h>
+#include <linux/mii.h>
+#include <linux/slab.h>
+#include <linux/dmi.h>
+#include <linux/prefetch.h>
+#include <asm/irq.h>
+
+#include "skge.h"
+
+#define DRV_NAME		"skge"
+#define DRV_VERSION		"1.14"
+
+#define DEFAULT_TX_RING_SIZE	128
+#define DEFAULT_RX_RING_SIZE	512
+#define MAX_TX_RING_SIZE	1024
+#define TX_LOW_WATER		(MAX_SKB_FRAGS + 1)
+#define MAX_RX_RING_SIZE	4096
+#define RX_COPY_THRESHOLD	128
+#define RX_BUF_SIZE		1536
+#define PHY_RETRIES	        1000
+#define ETH_JUMBO_MTU		9000
+#define TX_WATCHDOG		(5 * HZ)
+#define BLINK_MS		250
+#define LINK_HZ			HZ
+
+#define SKGE_EEPROM_MAGIC	0x9933aabb
+
+
+MODULE_DESCRIPTION("SysKonnect Gigabit Ethernet driver");
+MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+static const u32 default_msg = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
+				NETIF_MSG_LINK | NETIF_MSG_IFUP |
+				NETIF_MSG_IFDOWN);
+
+static int debug = -1;	/* defaults above */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
+
+static const struct pci_device_id skge_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_3COM, 0x1700) },	  /* 3Com 3C940 */
+	{ PCI_DEVICE(PCI_VENDOR_ID_3COM, 0x80EB) },	  /* 3Com 3C940B */
+#ifdef CONFIG_SKGE_GENESIS
+	{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x4300) }, /* SK-9xx */
+#endif
+	{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x4320) }, /* SK-98xx V2.0 */
+	{ PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) },	  /* D-Link DGE-530T (rev.B) */
+	{ PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4c00) },	  /* D-Link DGE-530T */
+	{ PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4302) },	  /* D-Link DGE-530T Rev C1 */
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4320) },	  /* Marvell Yukon 88E8001/8003/8010 */
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5005) },	  /* Belkin */
+	{ PCI_DEVICE(PCI_VENDOR_ID_CNET, 0x434E) }, 	  /* CNet PowerG-2000 */
+	{ PCI_DEVICE(PCI_VENDOR_ID_LINKSYS, 0x1064) },	  /* Linksys EG1064 v2 */
+	{ PCI_VENDOR_ID_LINKSYS, 0x1032, PCI_ANY_ID, 0x0015 }, /* Linksys EG1032 v2 */
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(pci, skge_id_table);
+
+static int skge_up(struct net_device *dev);
+static int skge_down(struct net_device *dev);
+static void skge_phy_reset(struct skge_port *skge);
+static void skge_tx_clean(struct net_device *dev);
+static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
+static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
+static void genesis_get_stats(struct skge_port *skge, u64 *data);
+static void yukon_get_stats(struct skge_port *skge, u64 *data);
+static void yukon_init(struct skge_hw *hw, int port);
+static void genesis_mac_init(struct skge_hw *hw, int port);
+static void genesis_link_up(struct skge_port *skge);
+static void skge_set_multicast(struct net_device *dev);
+static irqreturn_t skge_intr(int irq, void *dev_id);
+
+/* Avoid conditionals by using array */
+static const int txqaddr[] = { Q_XA1, Q_XA2 };
+static const int rxqaddr[] = { Q_R1, Q_R2 };
+static const u32 rxirqmask[] = { IS_R1_F, IS_R2_F };
+static const u32 txirqmask[] = { IS_XA1_F, IS_XA2_F };
+static const u32 napimask[] = { IS_R1_F|IS_XA1_F, IS_R2_F|IS_XA2_F };
+static const u32 portmask[] = { IS_PORT_1, IS_PORT_2 };
+
+static inline bool is_genesis(const struct skge_hw *hw)
+{
+#ifdef CONFIG_SKGE_GENESIS
+	return hw->chip_id == CHIP_ID_GENESIS;
+#else
+	return false;
+#endif
+}
+
+static int skge_get_regs_len(struct net_device *dev)
+{
+	return 0x4000;
+}
+
+/*
+ * Returns copy of whole control register region
+ * Note: skip RAM address register because accessing it will
+ * 	 cause bus hangs!
+ */
+static void skge_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+			  void *p)
+{
+	const struct skge_port *skge = netdev_priv(dev);
+	const void __iomem *io = skge->hw->regs;
+
+	regs->version = 1;
+	memset(p, 0, regs->len);
+	memcpy_fromio(p, io, B3_RAM_ADDR);
+
+	if (regs->len > B3_RI_WTO_R1) {
+		memcpy_fromio(p + B3_RI_WTO_R1, io + B3_RI_WTO_R1,
+			      regs->len - B3_RI_WTO_R1);
+	}
+}
+
+/* Wake on Lan only supported on Yukon chips with rev 1 or above */
+static u32 wol_supported(const struct skge_hw *hw)
+{
+	if (is_genesis(hw))
+		return 0;
+
+	if (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)
+		return 0;
+
+	return WAKE_MAGIC | WAKE_PHY;
+}
+
+static void skge_wol_init(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u16 ctrl;
+
+	skge_write16(hw, B0_CTST, CS_RST_CLR);
+	skge_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
+
+	/* Turn on Vaux */
+	skge_write8(hw, B0_POWER_CTRL,
+		    PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_ON | PC_VCC_OFF);
+
+	/* WA code for COMA mode -- clear PHY reset */
+	if (hw->chip_id == CHIP_ID_YUKON_LITE &&
+	    hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
+		u32 reg = skge_read32(hw, B2_GP_IO);
+		reg |= GP_DIR_9;
+		reg &= ~GP_IO_9;
+		skge_write32(hw, B2_GP_IO, reg);
+	}
+
+	skge_write32(hw, SK_REG(port, GPHY_CTRL),
+		     GPC_DIS_SLEEP |
+		     GPC_HWCFG_M_3 | GPC_HWCFG_M_2 | GPC_HWCFG_M_1 | GPC_HWCFG_M_0 |
+		     GPC_ANEG_1 | GPC_RST_SET);
+
+	skge_write32(hw, SK_REG(port, GPHY_CTRL),
+		     GPC_DIS_SLEEP |
+		     GPC_HWCFG_M_3 | GPC_HWCFG_M_2 | GPC_HWCFG_M_1 | GPC_HWCFG_M_0 |
+		     GPC_ANEG_1 | GPC_RST_CLR);
+
+	skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
+
+	/* Force to 10/100 skge_reset will re-enable on resume	 */
+	gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
+		     (PHY_AN_100FULL | PHY_AN_100HALF |
+		      PHY_AN_10FULL | PHY_AN_10HALF | PHY_AN_CSMA));
+	/* no 1000 HD/FD */
+	gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, 0);
+	gm_phy_write(hw, port, PHY_MARV_CTRL,
+		     PHY_CT_RESET | PHY_CT_SPS_LSB | PHY_CT_ANE |
+		     PHY_CT_RE_CFG | PHY_CT_DUP_MD);
+
+
+	/* Set GMAC to no flow control and auto update for speed/duplex */
+	gma_write16(hw, port, GM_GP_CTRL,
+		    GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
+		    GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
+
+	/* Set WOL address */
+	memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
+		    skge->netdev->dev_addr, ETH_ALEN);
+
+	/* Turn on appropriate WOL control bits */
+	skge_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
+	ctrl = 0;
+	if (skge->wol & WAKE_PHY)
+		ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
+	else
+		ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
+
+	if (skge->wol & WAKE_MAGIC)
+		ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
+	else
+		ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;
+
+	ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
+	skge_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
+
+	/* block receiver */
+	skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
+}
+
+static void skge_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	wol->supported = wol_supported(skge->hw);
+	wol->wolopts = skge->wol;
+}
+
+static int skge_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+
+	if ((wol->wolopts & ~wol_supported(hw)) ||
+	    !device_can_wakeup(&hw->pdev->dev))
+		return -EOPNOTSUPP;
+
+	skge->wol = wol->wolopts;
+
+	device_set_wakeup_enable(&hw->pdev->dev, skge->wol);
+
+	return 0;
+}
+
+/* Determine supported/advertised modes based on hardware.
+ * Note: ethtool ADVERTISED_xxx == SUPPORTED_xxx
+ */
+static u32 skge_supported_modes(const struct skge_hw *hw)
+{
+	u32 supported;
+
+	if (hw->copper) {
+		supported = (SUPPORTED_10baseT_Half |
+			     SUPPORTED_10baseT_Full |
+			     SUPPORTED_100baseT_Half |
+			     SUPPORTED_100baseT_Full |
+			     SUPPORTED_1000baseT_Half |
+			     SUPPORTED_1000baseT_Full |
+			     SUPPORTED_Autoneg |
+			     SUPPORTED_TP);
+
+		if (is_genesis(hw))
+			supported &= ~(SUPPORTED_10baseT_Half |
+				       SUPPORTED_10baseT_Full |
+				       SUPPORTED_100baseT_Half |
+				       SUPPORTED_100baseT_Full);
+
+		else if (hw->chip_id == CHIP_ID_YUKON)
+			supported &= ~SUPPORTED_1000baseT_Half;
+	} else
+		supported = (SUPPORTED_1000baseT_Full |
+			     SUPPORTED_1000baseT_Half |
+			     SUPPORTED_FIBRE |
+			     SUPPORTED_Autoneg);
+
+	return supported;
+}
+
+static int skge_get_link_ksettings(struct net_device *dev,
+				   struct ethtool_link_ksettings *cmd)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	u32 supported, advertising;
+
+	supported = skge_supported_modes(hw);
+
+	if (hw->copper) {
+		cmd->base.port = PORT_TP;
+		cmd->base.phy_address = hw->phy_addr;
+	} else
+		cmd->base.port = PORT_FIBRE;
+
+	advertising = skge->advertising;
+	cmd->base.autoneg = skge->autoneg;
+	cmd->base.speed = skge->speed;
+	cmd->base.duplex = skge->duplex;
+
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						supported);
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+						advertising);
+
+	return 0;
+}
+
+static int skge_set_link_ksettings(struct net_device *dev,
+				   const struct ethtool_link_ksettings *cmd)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	const struct skge_hw *hw = skge->hw;
+	u32 supported = skge_supported_modes(hw);
+	int err = 0;
+	u32 advertising;
+
+	ethtool_convert_link_mode_to_legacy_u32(&advertising,
+						cmd->link_modes.advertising);
+
+	if (cmd->base.autoneg == AUTONEG_ENABLE) {
+		advertising = supported;
+		skge->duplex = -1;
+		skge->speed = -1;
+	} else {
+		u32 setting;
+		u32 speed = cmd->base.speed;
+
+		switch (speed) {
+		case SPEED_1000:
+			if (cmd->base.duplex == DUPLEX_FULL)
+				setting = SUPPORTED_1000baseT_Full;
+			else if (cmd->base.duplex == DUPLEX_HALF)
+				setting = SUPPORTED_1000baseT_Half;
+			else
+				return -EINVAL;
+			break;
+		case SPEED_100:
+			if (cmd->base.duplex == DUPLEX_FULL)
+				setting = SUPPORTED_100baseT_Full;
+			else if (cmd->base.duplex == DUPLEX_HALF)
+				setting = SUPPORTED_100baseT_Half;
+			else
+				return -EINVAL;
+			break;
+
+		case SPEED_10:
+			if (cmd->base.duplex == DUPLEX_FULL)
+				setting = SUPPORTED_10baseT_Full;
+			else if (cmd->base.duplex == DUPLEX_HALF)
+				setting = SUPPORTED_10baseT_Half;
+			else
+				return -EINVAL;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		if ((setting & supported) == 0)
+			return -EINVAL;
+
+		skge->speed = speed;
+		skge->duplex = cmd->base.duplex;
+	}
+
+	skge->autoneg = cmd->base.autoneg;
+	skge->advertising = advertising;
+
+	if (netif_running(dev)) {
+		skge_down(dev);
+		err = skge_up(dev);
+		if (err) {
+			dev_close(dev);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static void skge_get_drvinfo(struct net_device *dev,
+			     struct ethtool_drvinfo *info)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	strscpy(info->driver, DRV_NAME, sizeof(info->driver));
+	strscpy(info->version, DRV_VERSION, sizeof(info->version));
+	strscpy(info->bus_info, pci_name(skge->hw->pdev),
+		sizeof(info->bus_info));
+}
+
+static const struct skge_stat {
+	char 	   name[ETH_GSTRING_LEN];
+	u16	   xmac_offset;
+	u16	   gma_offset;
+} skge_stats[] = {
+	{ "tx_bytes",		XM_TXO_OK_HI,  GM_TXO_OK_HI },
+	{ "rx_bytes",		XM_RXO_OK_HI,  GM_RXO_OK_HI },
+
+	{ "tx_broadcast",	XM_TXF_BC_OK,  GM_TXF_BC_OK },
+	{ "rx_broadcast",	XM_RXF_BC_OK,  GM_RXF_BC_OK },
+	{ "tx_multicast",	XM_TXF_MC_OK,  GM_TXF_MC_OK },
+	{ "rx_multicast",	XM_RXF_MC_OK,  GM_RXF_MC_OK },
+	{ "tx_unicast",		XM_TXF_UC_OK,  GM_TXF_UC_OK },
+	{ "rx_unicast",		XM_RXF_UC_OK,  GM_RXF_UC_OK },
+	{ "tx_mac_pause",	XM_TXF_MPAUSE, GM_TXF_MPAUSE },
+	{ "rx_mac_pause",	XM_RXF_MPAUSE, GM_RXF_MPAUSE },
+
+	{ "collisions",		XM_TXF_SNG_COL, GM_TXF_SNG_COL },
+	{ "multi_collisions",	XM_TXF_MUL_COL, GM_TXF_MUL_COL },
+	{ "aborted",		XM_TXF_ABO_COL, GM_TXF_ABO_COL },
+	{ "late_collision",	XM_TXF_LAT_COL, GM_TXF_LAT_COL },
+	{ "fifo_underrun",	XM_TXE_FIFO_UR, GM_TXE_FIFO_UR },
+	{ "fifo_overflow",	XM_RXE_FIFO_OV, GM_RXE_FIFO_OV },
+
+	{ "rx_toolong",		XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
+	{ "rx_jabber",		XM_RXF_JAB_PKT, GM_RXF_JAB_PKT },
+	{ "rx_runt",		XM_RXE_RUNT, 	GM_RXE_FRAG },
+	{ "rx_too_long",	XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
+	{ "rx_fcs_error",	XM_RXF_FCS_ERR, GM_RXF_FCS_ERR },
+};
+
+static int skge_get_sset_count(struct net_device *dev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return ARRAY_SIZE(skge_stats);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void skge_get_ethtool_stats(struct net_device *dev,
+				   struct ethtool_stats *stats, u64 *data)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	if (is_genesis(skge->hw))
+		genesis_get_stats(skge, data);
+	else
+		yukon_get_stats(skge, data);
+}
+
+/* Use hardware MIB variables for critical path statistics and
+ * transmit feedback not reported at interrupt.
+ * Other errors are accounted for in interrupt handler.
+ */
+static struct net_device_stats *skge_get_stats(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	u64 data[ARRAY_SIZE(skge_stats)];
+
+	if (is_genesis(skge->hw))
+		genesis_get_stats(skge, data);
+	else
+		yukon_get_stats(skge, data);
+
+	dev->stats.tx_bytes = data[0];
+	dev->stats.rx_bytes = data[1];
+	dev->stats.tx_packets = data[2] + data[4] + data[6];
+	dev->stats.rx_packets = data[3] + data[5] + data[7];
+	dev->stats.multicast = data[3] + data[5];
+	dev->stats.collisions = data[10];
+	dev->stats.tx_aborted_errors = data[12];
+
+	return &dev->stats;
+}
+
+static void skge_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+	int i;
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		for (i = 0; i < ARRAY_SIZE(skge_stats); i++)
+			memcpy(data + i * ETH_GSTRING_LEN,
+			       skge_stats[i].name, ETH_GSTRING_LEN);
+		break;
+	}
+}
+
+static void skge_get_ring_param(struct net_device *dev,
+				struct ethtool_ringparam *p,
+				struct kernel_ethtool_ringparam *kernel_p,
+				struct netlink_ext_ack *extack)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	p->rx_max_pending = MAX_RX_RING_SIZE;
+	p->tx_max_pending = MAX_TX_RING_SIZE;
+
+	p->rx_pending = skge->rx_ring.count;
+	p->tx_pending = skge->tx_ring.count;
+}
+
+static int skge_set_ring_param(struct net_device *dev,
+			       struct ethtool_ringparam *p,
+			       struct kernel_ethtool_ringparam *kernel_p,
+			       struct netlink_ext_ack *extack)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	int err = 0;
+
+	if (p->rx_pending == 0 || p->rx_pending > MAX_RX_RING_SIZE ||
+	    p->tx_pending < TX_LOW_WATER || p->tx_pending > MAX_TX_RING_SIZE)
+		return -EINVAL;
+
+	skge->rx_ring.count = p->rx_pending;
+	skge->tx_ring.count = p->tx_pending;
+
+	if (netif_running(dev)) {
+		skge_down(dev);
+		err = skge_up(dev);
+		if (err)
+			dev_close(dev);
+	}
+
+	return err;
+}
+
+static u32 skge_get_msglevel(struct net_device *netdev)
+{
+	struct skge_port *skge = netdev_priv(netdev);
+	return skge->msg_enable;
+}
+
+static void skge_set_msglevel(struct net_device *netdev, u32 value)
+{
+	struct skge_port *skge = netdev_priv(netdev);
+	skge->msg_enable = value;
+}
+
+static int skge_nway_reset(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	if (skge->autoneg != AUTONEG_ENABLE || !netif_running(dev))
+		return -EINVAL;
+
+	skge_phy_reset(skge);
+	return 0;
+}
+
+static void skge_get_pauseparam(struct net_device *dev,
+				struct ethtool_pauseparam *ecmd)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	ecmd->rx_pause = ((skge->flow_control == FLOW_MODE_SYMMETRIC) ||
+			  (skge->flow_control == FLOW_MODE_SYM_OR_REM));
+	ecmd->tx_pause = (ecmd->rx_pause ||
+			  (skge->flow_control == FLOW_MODE_LOC_SEND));
+
+	ecmd->autoneg = ecmd->rx_pause || ecmd->tx_pause;
+}
+
+static int skge_set_pauseparam(struct net_device *dev,
+			       struct ethtool_pauseparam *ecmd)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct ethtool_pauseparam old;
+	int err = 0;
+
+	skge_get_pauseparam(dev, &old);
+
+	if (ecmd->autoneg != old.autoneg)
+		skge->flow_control = ecmd->autoneg ? FLOW_MODE_NONE : FLOW_MODE_SYMMETRIC;
+	else {
+		if (ecmd->rx_pause && ecmd->tx_pause)
+			skge->flow_control = FLOW_MODE_SYMMETRIC;
+		else if (ecmd->rx_pause && !ecmd->tx_pause)
+			skge->flow_control = FLOW_MODE_SYM_OR_REM;
+		else if (!ecmd->rx_pause && ecmd->tx_pause)
+			skge->flow_control = FLOW_MODE_LOC_SEND;
+		else
+			skge->flow_control = FLOW_MODE_NONE;
+	}
+
+	if (netif_running(dev)) {
+		skge_down(dev);
+		err = skge_up(dev);
+		if (err) {
+			dev_close(dev);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+/* Chip internal frequency for clock calculations */
+static inline u32 hwkhz(const struct skge_hw *hw)
+{
+	return is_genesis(hw) ? 53125 : 78125;
+}
+
+/* Chip HZ to microseconds */
+static inline u32 skge_clk2usec(const struct skge_hw *hw, u32 ticks)
+{
+	return (ticks * 1000) / hwkhz(hw);
+}
+
+/* Microseconds to chip HZ */
+static inline u32 skge_usecs2clk(const struct skge_hw *hw, u32 usec)
+{
+	return hwkhz(hw) * usec / 1000;
+}
+
+static int skge_get_coalesce(struct net_device *dev,
+			     struct ethtool_coalesce *ecmd,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+
+	ecmd->rx_coalesce_usecs = 0;
+	ecmd->tx_coalesce_usecs = 0;
+
+	if (skge_read32(hw, B2_IRQM_CTRL) & TIM_START) {
+		u32 delay = skge_clk2usec(hw, skge_read32(hw, B2_IRQM_INI));
+		u32 msk = skge_read32(hw, B2_IRQM_MSK);
+
+		if (msk & rxirqmask[port])
+			ecmd->rx_coalesce_usecs = delay;
+		if (msk & txirqmask[port])
+			ecmd->tx_coalesce_usecs = delay;
+	}
+
+	return 0;
+}
+
+/* Note: interrupt timer is per board, but can turn on/off per port */
+static int skge_set_coalesce(struct net_device *dev,
+			     struct ethtool_coalesce *ecmd,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u32 msk = skge_read32(hw, B2_IRQM_MSK);
+	u32 delay = 25;
+
+	if (ecmd->rx_coalesce_usecs == 0)
+		msk &= ~rxirqmask[port];
+	else if (ecmd->rx_coalesce_usecs < 25 ||
+		 ecmd->rx_coalesce_usecs > 33333)
+		return -EINVAL;
+	else {
+		msk |= rxirqmask[port];
+		delay = ecmd->rx_coalesce_usecs;
+	}
+
+	if (ecmd->tx_coalesce_usecs == 0)
+		msk &= ~txirqmask[port];
+	else if (ecmd->tx_coalesce_usecs < 25 ||
+		 ecmd->tx_coalesce_usecs > 33333)
+		return -EINVAL;
+	else {
+		msk |= txirqmask[port];
+		delay = min(delay, ecmd->rx_coalesce_usecs);
+	}
+
+	skge_write32(hw, B2_IRQM_MSK, msk);
+	if (msk == 0)
+		skge_write32(hw, B2_IRQM_CTRL, TIM_STOP);
+	else {
+		skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, delay));
+		skge_write32(hw, B2_IRQM_CTRL, TIM_START);
+	}
+	return 0;
+}
+
+enum led_mode { LED_MODE_OFF, LED_MODE_ON, LED_MODE_TST };
+static void skge_led(struct skge_port *skge, enum led_mode mode)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+
+	spin_lock_bh(&hw->phy_lock);
+	if (is_genesis(hw)) {
+		switch (mode) {
+		case LED_MODE_OFF:
+			if (hw->phy_type == SK_PHY_BCOM)
+				xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_OFF);
+			else {
+				skge_write32(hw, SK_REG(port, TX_LED_VAL), 0);
+				skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_T_OFF);
+			}
+			skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
+			skge_write32(hw, SK_REG(port, RX_LED_VAL), 0);
+			skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_T_OFF);
+			break;
+
+		case LED_MODE_ON:
+			skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_ON);
+			skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_LINKSYNC_ON);
+
+			skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
+			skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
+
+			break;
+
+		case LED_MODE_TST:
+			skge_write8(hw, SK_REG(port, RX_LED_TST), LED_T_ON);
+			skge_write32(hw, SK_REG(port, RX_LED_VAL), 100);
+			skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
+
+			if (hw->phy_type == SK_PHY_BCOM)
+				xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_ON);
+			else {
+				skge_write8(hw, SK_REG(port, TX_LED_TST), LED_T_ON);
+				skge_write32(hw, SK_REG(port, TX_LED_VAL), 100);
+				skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
+			}
+
+		}
+	} else {
+		switch (mode) {
+		case LED_MODE_OFF:
+			gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
+			gm_phy_write(hw, port, PHY_MARV_LED_OVER,
+				     PHY_M_LED_MO_DUP(MO_LED_OFF)  |
+				     PHY_M_LED_MO_10(MO_LED_OFF)   |
+				     PHY_M_LED_MO_100(MO_LED_OFF)  |
+				     PHY_M_LED_MO_1000(MO_LED_OFF) |
+				     PHY_M_LED_MO_RX(MO_LED_OFF));
+			break;
+		case LED_MODE_ON:
+			gm_phy_write(hw, port, PHY_MARV_LED_CTRL,
+				     PHY_M_LED_PULS_DUR(PULS_170MS) |
+				     PHY_M_LED_BLINK_RT(BLINK_84MS) |
+				     PHY_M_LEDC_TX_CTRL |
+				     PHY_M_LEDC_DP_CTRL);
+
+			gm_phy_write(hw, port, PHY_MARV_LED_OVER,
+				     PHY_M_LED_MO_RX(MO_LED_OFF) |
+				     (skge->speed == SPEED_100 ?
+				      PHY_M_LED_MO_100(MO_LED_ON) : 0));
+			break;
+		case LED_MODE_TST:
+			gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
+			gm_phy_write(hw, port, PHY_MARV_LED_OVER,
+				     PHY_M_LED_MO_DUP(MO_LED_ON)  |
+				     PHY_M_LED_MO_10(MO_LED_ON)   |
+				     PHY_M_LED_MO_100(MO_LED_ON)  |
+				     PHY_M_LED_MO_1000(MO_LED_ON) |
+				     PHY_M_LED_MO_RX(MO_LED_ON));
+		}
+	}
+	spin_unlock_bh(&hw->phy_lock);
+}
+
+/* blink LED's for finding board */
+static int skge_set_phys_id(struct net_device *dev,
+			    enum ethtool_phys_id_state state)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	switch (state) {
+	case ETHTOOL_ID_ACTIVE:
+		return 2;	/* cycle on/off twice per second */
+
+	case ETHTOOL_ID_ON:
+		skge_led(skge, LED_MODE_TST);
+		break;
+
+	case ETHTOOL_ID_OFF:
+		skge_led(skge, LED_MODE_OFF);
+		break;
+
+	case ETHTOOL_ID_INACTIVE:
+		/* back to regular LED state */
+		skge_led(skge, netif_running(dev) ? LED_MODE_ON : LED_MODE_OFF);
+	}
+
+	return 0;
+}
+
+static int skge_get_eeprom_len(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	u32 reg2;
+
+	pci_read_config_dword(skge->hw->pdev, PCI_DEV_REG2, &reg2);
+	return 1 << (((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
+}
+
+static u32 skge_vpd_read(struct pci_dev *pdev, int cap, u16 offset)
+{
+	u32 val;
+
+	pci_write_config_word(pdev, cap + PCI_VPD_ADDR, offset);
+
+	do {
+		pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
+	} while (!(offset & PCI_VPD_ADDR_F));
+
+	pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &val);
+	return val;
+}
+
+static void skge_vpd_write(struct pci_dev *pdev, int cap, u16 offset, u32 val)
+{
+	pci_write_config_dword(pdev, cap + PCI_VPD_DATA, val);
+	pci_write_config_word(pdev, cap + PCI_VPD_ADDR,
+			      offset | PCI_VPD_ADDR_F);
+
+	do {
+		pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
+	} while (offset & PCI_VPD_ADDR_F);
+}
+
+static int skge_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
+			   u8 *data)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct pci_dev *pdev = skge->hw->pdev;
+	int cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
+	int length = eeprom->len;
+	u16 offset = eeprom->offset;
+
+	if (!cap)
+		return -EINVAL;
+
+	eeprom->magic = SKGE_EEPROM_MAGIC;
+
+	while (length > 0) {
+		u32 val = skge_vpd_read(pdev, cap, offset);
+		int n = min_t(int, length, sizeof(val));
+
+		memcpy(data, &val, n);
+		length -= n;
+		data += n;
+		offset += n;
+	}
+	return 0;
+}
+
+static int skge_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
+			   u8 *data)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct pci_dev *pdev = skge->hw->pdev;
+	int cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
+	int length = eeprom->len;
+	u16 offset = eeprom->offset;
+
+	if (!cap)
+		return -EINVAL;
+
+	if (eeprom->magic != SKGE_EEPROM_MAGIC)
+		return -EINVAL;
+
+	while (length > 0) {
+		u32 val;
+		int n = min_t(int, length, sizeof(val));
+
+		if (n < sizeof(val))
+			val = skge_vpd_read(pdev, cap, offset);
+		memcpy(&val, data, n);
+
+		skge_vpd_write(pdev, cap, offset, val);
+
+		length -= n;
+		data += n;
+		offset += n;
+	}
+	return 0;
+}
+
+static const struct ethtool_ops skge_ethtool_ops = {
+	.supported_coalesce_params = ETHTOOL_COALESCE_USECS,
+	.get_drvinfo	= skge_get_drvinfo,
+	.get_regs_len	= skge_get_regs_len,
+	.get_regs	= skge_get_regs,
+	.get_wol	= skge_get_wol,
+	.set_wol	= skge_set_wol,
+	.get_msglevel	= skge_get_msglevel,
+	.set_msglevel	= skge_set_msglevel,
+	.nway_reset	= skge_nway_reset,
+	.get_link	= ethtool_op_get_link,
+	.get_eeprom_len	= skge_get_eeprom_len,
+	.get_eeprom	= skge_get_eeprom,
+	.set_eeprom	= skge_set_eeprom,
+	.get_ringparam	= skge_get_ring_param,
+	.set_ringparam	= skge_set_ring_param,
+	.get_pauseparam = skge_get_pauseparam,
+	.set_pauseparam = skge_set_pauseparam,
+	.get_coalesce	= skge_get_coalesce,
+	.set_coalesce	= skge_set_coalesce,
+	.get_strings	= skge_get_strings,
+	.set_phys_id	= skge_set_phys_id,
+	.get_sset_count = skge_get_sset_count,
+	.get_ethtool_stats = skge_get_ethtool_stats,
+	.get_link_ksettings = skge_get_link_ksettings,
+	.set_link_ksettings = skge_set_link_ksettings,
+};
+
+/*
+ * Allocate ring elements and chain them together
+ * One-to-one association of board descriptors with ring elements
+ */
+static int skge_ring_alloc(struct skge_ring *ring, void *vaddr, u32 base)
+{
+	struct skge_tx_desc *d;
+	struct skge_element *e;
+	int i;
+
+	ring->start = kcalloc(ring->count, sizeof(*e), GFP_KERNEL);
+	if (!ring->start)
+		return -ENOMEM;
+
+	for (i = 0, e = ring->start, d = vaddr; i < ring->count; i++, e++, d++) {
+		e->desc = d;
+		if (i == ring->count - 1) {
+			e->next = ring->start;
+			d->next_offset = base;
+		} else {
+			e->next = e + 1;
+			d->next_offset = base + (i+1) * sizeof(*d);
+		}
+	}
+	ring->to_use = ring->to_clean = ring->start;
+
+	return 0;
+}
+
+/* Allocate and setup a new buffer for receiving */
+static int skge_rx_setup(struct skge_port *skge, struct skge_element *e,
+			 struct sk_buff *skb, unsigned int bufsize)
+{
+	struct skge_rx_desc *rd = e->desc;
+	dma_addr_t map;
+
+	map = dma_map_single(&skge->hw->pdev->dev, skb->data, bufsize,
+			     DMA_FROM_DEVICE);
+
+	if (dma_mapping_error(&skge->hw->pdev->dev, map))
+		return -1;
+
+	rd->dma_lo = lower_32_bits(map);
+	rd->dma_hi = upper_32_bits(map);
+	e->skb = skb;
+	rd->csum1_start = ETH_HLEN;
+	rd->csum2_start = ETH_HLEN;
+	rd->csum1 = 0;
+	rd->csum2 = 0;
+
+	wmb();
+
+	rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | bufsize;
+	dma_unmap_addr_set(e, mapaddr, map);
+	dma_unmap_len_set(e, maplen, bufsize);
+	return 0;
+}
+
+/* Resume receiving using existing skb,
+ * Note: DMA address is not changed by chip.
+ * 	 MTU not changed while receiver active.
+ */
+static inline void skge_rx_reuse(struct skge_element *e, unsigned int size)
+{
+	struct skge_rx_desc *rd = e->desc;
+
+	rd->csum2 = 0;
+	rd->csum2_start = ETH_HLEN;
+
+	wmb();
+
+	rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | size;
+}
+
+
+/* Free all  buffers in receive ring, assumes receiver stopped */
+static void skge_rx_clean(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	struct skge_ring *ring = &skge->rx_ring;
+	struct skge_element *e;
+
+	e = ring->start;
+	do {
+		struct skge_rx_desc *rd = e->desc;
+		rd->control = 0;
+		if (e->skb) {
+			dma_unmap_single(&hw->pdev->dev,
+					 dma_unmap_addr(e, mapaddr),
+					 dma_unmap_len(e, maplen),
+					 DMA_FROM_DEVICE);
+			dev_kfree_skb(e->skb);
+			e->skb = NULL;
+		}
+	} while ((e = e->next) != ring->start);
+}
+
+
+/* Allocate buffers for receive ring
+ * For receive:  to_clean is next received frame.
+ */
+static int skge_rx_fill(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_ring *ring = &skge->rx_ring;
+	struct skge_element *e;
+
+	e = ring->start;
+	do {
+		struct sk_buff *skb;
+
+		skb = __netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN,
+					 GFP_KERNEL);
+		if (!skb)
+			return -ENOMEM;
+
+		skb_reserve(skb, NET_IP_ALIGN);
+		if (skge_rx_setup(skge, e, skb, skge->rx_buf_size) < 0) {
+			dev_kfree_skb(skb);
+			return -EIO;
+		}
+	} while ((e = e->next) != ring->start);
+
+	ring->to_clean = ring->start;
+	return 0;
+}
+
+static const char *skge_pause(enum pause_status status)
+{
+	switch (status) {
+	case FLOW_STAT_NONE:
+		return "none";
+	case FLOW_STAT_REM_SEND:
+		return "rx only";
+	case FLOW_STAT_LOC_SEND:
+		return "tx_only";
+	case FLOW_STAT_SYMMETRIC:		/* Both station may send PAUSE */
+		return "both";
+	default:
+		return "indeterminated";
+	}
+}
+
+
+static void skge_link_up(struct skge_port *skge)
+{
+	skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG),
+		    LED_BLK_OFF|LED_SYNC_OFF|LED_REG_ON);
+
+	netif_carrier_on(skge->netdev);
+	netif_wake_queue(skge->netdev);
+
+	netif_info(skge, link, skge->netdev,
+		   "Link is up at %d Mbps, %s duplex, flow control %s\n",
+		   skge->speed,
+		   skge->duplex == DUPLEX_FULL ? "full" : "half",
+		   skge_pause(skge->flow_status));
+}
+
+static void skge_link_down(struct skge_port *skge)
+{
+	skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_REG_OFF);
+	netif_carrier_off(skge->netdev);
+	netif_stop_queue(skge->netdev);
+
+	netif_info(skge, link, skge->netdev, "Link is down\n");
+}
+
+static void xm_link_down(struct skge_hw *hw, int port)
+{
+	struct net_device *dev = hw->dev[port];
+	struct skge_port *skge = netdev_priv(dev);
+
+	xm_write16(hw, port, XM_IMSK, XM_IMSK_DISABLE);
+
+	if (netif_carrier_ok(dev))
+		skge_link_down(skge);
+}
+
+static int __xm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
+{
+	int i;
+
+	xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
+	*val = xm_read16(hw, port, XM_PHY_DATA);
+
+	if (hw->phy_type == SK_PHY_XMAC)
+		goto ready;
+
+	for (i = 0; i < PHY_RETRIES; i++) {
+		if (xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_RDY)
+			goto ready;
+		udelay(1);
+	}
+
+	return -ETIMEDOUT;
+ ready:
+	*val = xm_read16(hw, port, XM_PHY_DATA);
+
+	return 0;
+}
+
+static u16 xm_phy_read(struct skge_hw *hw, int port, u16 reg)
+{
+	u16 v = 0;
+	if (__xm_phy_read(hw, port, reg, &v))
+		pr_warn("%s: phy read timed out\n", hw->dev[port]->name);
+	return v;
+}
+
+static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
+{
+	int i;
+
+	xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
+	for (i = 0; i < PHY_RETRIES; i++) {
+		if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
+			goto ready;
+		udelay(1);
+	}
+	return -EIO;
+
+ ready:
+	xm_write16(hw, port, XM_PHY_DATA, val);
+	for (i = 0; i < PHY_RETRIES; i++) {
+		if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
+			return 0;
+		udelay(1);
+	}
+	return -ETIMEDOUT;
+}
+
+static void genesis_init(struct skge_hw *hw)
+{
+	/* set blink source counter */
+	skge_write32(hw, B2_BSC_INI, (SK_BLK_DUR * SK_FACT_53) / 100);
+	skge_write8(hw, B2_BSC_CTRL, BSC_START);
+
+	/* configure mac arbiter */
+	skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
+
+	/* configure mac arbiter timeout values */
+	skge_write8(hw, B3_MA_TOINI_RX1, SK_MAC_TO_53);
+	skge_write8(hw, B3_MA_TOINI_RX2, SK_MAC_TO_53);
+	skge_write8(hw, B3_MA_TOINI_TX1, SK_MAC_TO_53);
+	skge_write8(hw, B3_MA_TOINI_TX2, SK_MAC_TO_53);
+
+	skge_write8(hw, B3_MA_RCINI_RX1, 0);
+	skge_write8(hw, B3_MA_RCINI_RX2, 0);
+	skge_write8(hw, B3_MA_RCINI_TX1, 0);
+	skge_write8(hw, B3_MA_RCINI_TX2, 0);
+
+	/* configure packet arbiter timeout */
+	skge_write16(hw, B3_PA_CTRL, PA_RST_CLR);
+	skge_write16(hw, B3_PA_TOINI_RX1, SK_PKT_TO_MAX);
+	skge_write16(hw, B3_PA_TOINI_TX1, SK_PKT_TO_MAX);
+	skge_write16(hw, B3_PA_TOINI_RX2, SK_PKT_TO_MAX);
+	skge_write16(hw, B3_PA_TOINI_TX2, SK_PKT_TO_MAX);
+}
+
+static void genesis_reset(struct skge_hw *hw, int port)
+{
+	static const u8 zero[8]  = { 0 };
+	u32 reg;
+
+	skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
+
+	/* reset the statistics module */
+	xm_write32(hw, port, XM_GP_PORT, XM_GP_RES_STAT);
+	xm_write16(hw, port, XM_IMSK, XM_IMSK_DISABLE);
+	xm_write32(hw, port, XM_MODE, 0);		/* clear Mode Reg */
+	xm_write16(hw, port, XM_TX_CMD, 0);	/* reset TX CMD Reg */
+	xm_write16(hw, port, XM_RX_CMD, 0);	/* reset RX CMD Reg */
+
+	/* disable Broadcom PHY IRQ */
+	if (hw->phy_type == SK_PHY_BCOM)
+		xm_write16(hw, port, PHY_BCOM_INT_MASK, 0xffff);
+
+	xm_outhash(hw, port, XM_HSM, zero);
+
+	/* Flush TX and RX fifo */
+	reg = xm_read32(hw, port, XM_MODE);
+	xm_write32(hw, port, XM_MODE, reg | XM_MD_FTF);
+	xm_write32(hw, port, XM_MODE, reg | XM_MD_FRF);
+}
+
+/* Convert mode to MII values  */
+static const u16 phy_pause_map[] = {
+	[FLOW_MODE_NONE] =	0,
+	[FLOW_MODE_LOC_SEND] =	PHY_AN_PAUSE_ASYM,
+	[FLOW_MODE_SYMMETRIC] = PHY_AN_PAUSE_CAP,
+	[FLOW_MODE_SYM_OR_REM]  = PHY_AN_PAUSE_CAP | PHY_AN_PAUSE_ASYM,
+};
+
+/* special defines for FIBER (88E1011S only) */
+static const u16 fiber_pause_map[] = {
+	[FLOW_MODE_NONE]	= PHY_X_P_NO_PAUSE,
+	[FLOW_MODE_LOC_SEND]	= PHY_X_P_ASYM_MD,
+	[FLOW_MODE_SYMMETRIC]	= PHY_X_P_SYM_MD,
+	[FLOW_MODE_SYM_OR_REM]	= PHY_X_P_BOTH_MD,
+};
+
+
+/* Check status of Broadcom phy link */
+static void bcom_check_link(struct skge_hw *hw, int port)
+{
+	struct net_device *dev = hw->dev[port];
+	struct skge_port *skge = netdev_priv(dev);
+	u16 status;
+
+	/* read twice because of latch */
+	xm_phy_read(hw, port, PHY_BCOM_STAT);
+	status = xm_phy_read(hw, port, PHY_BCOM_STAT);
+
+	if ((status & PHY_ST_LSYNC) == 0) {
+		xm_link_down(hw, port);
+		return;
+	}
+
+	if (skge->autoneg == AUTONEG_ENABLE) {
+		u16 lpa, aux;
+
+		if (!(status & PHY_ST_AN_OVER))
+			return;
+
+		lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
+		if (lpa & PHY_B_AN_RF) {
+			netdev_notice(dev, "remote fault\n");
+			return;
+		}
+
+		aux = xm_phy_read(hw, port, PHY_BCOM_AUX_STAT);
+
+		/* Check Duplex mismatch */
+		switch (aux & PHY_B_AS_AN_RES_MSK) {
+		case PHY_B_RES_1000FD:
+			skge->duplex = DUPLEX_FULL;
+			break;
+		case PHY_B_RES_1000HD:
+			skge->duplex = DUPLEX_HALF;
+			break;
+		default:
+			netdev_notice(dev, "duplex mismatch\n");
+			return;
+		}
+
+		/* We are using IEEE 802.3z/D5.0 Table 37-4 */
+		switch (aux & PHY_B_AS_PAUSE_MSK) {
+		case PHY_B_AS_PAUSE_MSK:
+			skge->flow_status = FLOW_STAT_SYMMETRIC;
+			break;
+		case PHY_B_AS_PRR:
+			skge->flow_status = FLOW_STAT_REM_SEND;
+			break;
+		case PHY_B_AS_PRT:
+			skge->flow_status = FLOW_STAT_LOC_SEND;
+			break;
+		default:
+			skge->flow_status = FLOW_STAT_NONE;
+		}
+		skge->speed = SPEED_1000;
+	}
+
+	if (!netif_carrier_ok(dev))
+		genesis_link_up(skge);
+}
+
+/* Broadcom 5400 only supports giagabit! SysKonnect did not put an additional
+ * Phy on for 100 or 10Mbit operation
+ */
+static void bcom_phy_init(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	int i;
+	u16 id1, r, ext, ctl;
+
+	/* magic workaround patterns for Broadcom */
+	static const struct {
+		u16 reg;
+		u16 val;
+	} A1hack[] = {
+		{ 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 },
+		{ 0x17, 0x0013 }, { 0x15, 0x0404 }, { 0x17, 0x8006 },
+		{ 0x15, 0x0132 }, { 0x17, 0x8006 }, { 0x15, 0x0232 },
+		{ 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 },
+	}, C0hack[] = {
+		{ 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1204 },
+		{ 0x17, 0x0013 }, { 0x15, 0x0A04 }, { 0x18, 0x0420 },
+	};
+
+	/* read Id from external PHY (all have the same address) */
+	id1 = xm_phy_read(hw, port, PHY_XMAC_ID1);
+
+	/* Optimize MDIO transfer by suppressing preamble. */
+	r = xm_read16(hw, port, XM_MMU_CMD);
+	r |=  XM_MMU_NO_PRE;
+	xm_write16(hw, port, XM_MMU_CMD, r);
+
+	switch (id1) {
+	case PHY_BCOM_ID1_C0:
+		/*
+		 * Workaround BCOM Errata for the C0 type.
+		 * Write magic patterns to reserved registers.
+		 */
+		for (i = 0; i < ARRAY_SIZE(C0hack); i++)
+			xm_phy_write(hw, port,
+				     C0hack[i].reg, C0hack[i].val);
+
+		break;
+	case PHY_BCOM_ID1_A1:
+		/*
+		 * Workaround BCOM Errata for the A1 type.
+		 * Write magic patterns to reserved registers.
+		 */
+		for (i = 0; i < ARRAY_SIZE(A1hack); i++)
+			xm_phy_write(hw, port,
+				     A1hack[i].reg, A1hack[i].val);
+		break;
+	}
+
+	/*
+	 * Workaround BCOM Errata (#10523) for all BCom PHYs.
+	 * Disable Power Management after reset.
+	 */
+	r = xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL);
+	r |= PHY_B_AC_DIS_PM;
+	xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL, r);
+
+	/* Dummy read */
+	xm_read16(hw, port, XM_ISRC);
+
+	ext = PHY_B_PEC_EN_LTR; /* enable tx led */
+	ctl = PHY_CT_SP1000;	/* always 1000mbit */
+
+	if (skge->autoneg == AUTONEG_ENABLE) {
+		/*
+		 * Workaround BCOM Errata #1 for the C5 type.
+		 * 1000Base-T Link Acquisition Failure in Slave Mode
+		 * Set Repeater/DTE bit 10 of the 1000Base-T Control Register
+		 */
+		u16 adv = PHY_B_1000C_RD;
+		if (skge->advertising & ADVERTISED_1000baseT_Half)
+			adv |= PHY_B_1000C_AHD;
+		if (skge->advertising & ADVERTISED_1000baseT_Full)
+			adv |= PHY_B_1000C_AFD;
+		xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, adv);
+
+		ctl |= PHY_CT_ANE | PHY_CT_RE_CFG;
+	} else {
+		if (skge->duplex == DUPLEX_FULL)
+			ctl |= PHY_CT_DUP_MD;
+		/* Force to slave */
+		xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, PHY_B_1000C_MSE);
+	}
+
+	/* Set autonegotiation pause parameters */
+	xm_phy_write(hw, port, PHY_BCOM_AUNE_ADV,
+		     phy_pause_map[skge->flow_control] | PHY_AN_CSMA);
+
+	/* Handle Jumbo frames */
+	if (hw->dev[port]->mtu > ETH_DATA_LEN) {
+		xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
+			     PHY_B_AC_TX_TST | PHY_B_AC_LONG_PACK);
+
+		ext |= PHY_B_PEC_HIGH_LA;
+
+	}
+
+	xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, ext);
+	xm_phy_write(hw, port, PHY_BCOM_CTRL, ctl);
+
+	/* Use link status change interrupt */
+	xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
+}
+
+static void xm_phy_init(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u16 ctrl = 0;
+
+	if (skge->autoneg == AUTONEG_ENABLE) {
+		if (skge->advertising & ADVERTISED_1000baseT_Half)
+			ctrl |= PHY_X_AN_HD;
+		if (skge->advertising & ADVERTISED_1000baseT_Full)
+			ctrl |= PHY_X_AN_FD;
+
+		ctrl |= fiber_pause_map[skge->flow_control];
+
+		xm_phy_write(hw, port, PHY_XMAC_AUNE_ADV, ctrl);
+
+		/* Restart Auto-negotiation */
+		ctrl = PHY_CT_ANE | PHY_CT_RE_CFG;
+	} else {
+		/* Set DuplexMode in Config register */
+		if (skge->duplex == DUPLEX_FULL)
+			ctrl |= PHY_CT_DUP_MD;
+		/*
+		 * Do NOT enable Auto-negotiation here. This would hold
+		 * the link down because no IDLEs are transmitted
+		 */
+	}
+
+	xm_phy_write(hw, port, PHY_XMAC_CTRL, ctrl);
+
+	/* Poll PHY for status changes */
+	mod_timer(&skge->link_timer, jiffies + LINK_HZ);
+}
+
+static int xm_check_link(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u16 status;
+
+	/* read twice because of latch */
+	xm_phy_read(hw, port, PHY_XMAC_STAT);
+	status = xm_phy_read(hw, port, PHY_XMAC_STAT);
+
+	if ((status & PHY_ST_LSYNC) == 0) {
+		xm_link_down(hw, port);
+		return 0;
+	}
+
+	if (skge->autoneg == AUTONEG_ENABLE) {
+		u16 lpa, res;
+
+		if (!(status & PHY_ST_AN_OVER))
+			return 0;
+
+		lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
+		if (lpa & PHY_B_AN_RF) {
+			netdev_notice(dev, "remote fault\n");
+			return 0;
+		}
+
+		res = xm_phy_read(hw, port, PHY_XMAC_RES_ABI);
+
+		/* Check Duplex mismatch */
+		switch (res & (PHY_X_RS_HD | PHY_X_RS_FD)) {
+		case PHY_X_RS_FD:
+			skge->duplex = DUPLEX_FULL;
+			break;
+		case PHY_X_RS_HD:
+			skge->duplex = DUPLEX_HALF;
+			break;
+		default:
+			netdev_notice(dev, "duplex mismatch\n");
+			return 0;
+		}
+
+		/* We are using IEEE 802.3z/D5.0 Table 37-4 */
+		if ((skge->flow_control == FLOW_MODE_SYMMETRIC ||
+		     skge->flow_control == FLOW_MODE_SYM_OR_REM) &&
+		    (lpa & PHY_X_P_SYM_MD))
+			skge->flow_status = FLOW_STAT_SYMMETRIC;
+		else if (skge->flow_control == FLOW_MODE_SYM_OR_REM &&
+			 (lpa & PHY_X_RS_PAUSE) == PHY_X_P_ASYM_MD)
+			/* Enable PAUSE receive, disable PAUSE transmit */
+			skge->flow_status  = FLOW_STAT_REM_SEND;
+		else if (skge->flow_control == FLOW_MODE_LOC_SEND &&
+			 (lpa & PHY_X_RS_PAUSE) == PHY_X_P_BOTH_MD)
+			/* Disable PAUSE receive, enable PAUSE transmit */
+			skge->flow_status = FLOW_STAT_LOC_SEND;
+		else
+			skge->flow_status = FLOW_STAT_NONE;
+
+		skge->speed = SPEED_1000;
+	}
+
+	if (!netif_carrier_ok(dev))
+		genesis_link_up(skge);
+	return 1;
+}
+
+/* Poll to check for link coming up.
+ *
+ * Since internal PHY is wired to a level triggered pin, can't
+ * get an interrupt when carrier is detected, need to poll for
+ * link coming up.
+ */
+static void xm_link_timer(struct timer_list *t)
+{
+	struct skge_port *skge = from_timer(skge, t, link_timer);
+	struct net_device *dev = skge->netdev;
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	int i;
+	unsigned long flags;
+
+	if (!netif_running(dev))
+		return;
+
+	spin_lock_irqsave(&hw->phy_lock, flags);
+
+	/*
+	 * Verify that the link by checking GPIO register three times.
+	 * This pin has the signal from the link_sync pin connected to it.
+	 */
+	for (i = 0; i < 3; i++) {
+		if (xm_read16(hw, port, XM_GP_PORT) & XM_GP_INP_ASS)
+			goto link_down;
+	}
+
+	/* Re-enable interrupt to detect link down */
+	if (xm_check_link(dev)) {
+		u16 msk = xm_read16(hw, port, XM_IMSK);
+		msk &= ~XM_IS_INP_ASS;
+		xm_write16(hw, port, XM_IMSK, msk);
+		xm_read16(hw, port, XM_ISRC);
+	} else {
+link_down:
+		mod_timer(&skge->link_timer,
+			  round_jiffies(jiffies + LINK_HZ));
+	}
+	spin_unlock_irqrestore(&hw->phy_lock, flags);
+}
+
+static void genesis_mac_init(struct skge_hw *hw, int port)
+{
+	struct net_device *dev = hw->dev[port];
+	struct skge_port *skge = netdev_priv(dev);
+	int jumbo = hw->dev[port]->mtu > ETH_DATA_LEN;
+	int i;
+	u32 r;
+	static const u8 zero[6]  = { 0 };
+
+	for (i = 0; i < 10; i++) {
+		skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
+			     MFF_SET_MAC_RST);
+		if (skge_read16(hw, SK_REG(port, TX_MFF_CTRL1)) & MFF_SET_MAC_RST)
+			goto reset_ok;
+		udelay(1);
+	}
+
+	netdev_warn(dev, "genesis reset failed\n");
+
+ reset_ok:
+	/* Unreset the XMAC. */
+	skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);
+
+	/*
+	 * Perform additional initialization for external PHYs,
+	 * namely for the 1000baseTX cards that use the XMAC's
+	 * GMII mode.
+	 */
+	if (hw->phy_type != SK_PHY_XMAC) {
+		/* Take external Phy out of reset */
+		r = skge_read32(hw, B2_GP_IO);
+		if (port == 0)
+			r |= GP_DIR_0|GP_IO_0;
+		else
+			r |= GP_DIR_2|GP_IO_2;
+
+		skge_write32(hw, B2_GP_IO, r);
+
+		/* Enable GMII interface */
+		xm_write16(hw, port, XM_HW_CFG, XM_HW_GMII_MD);
+	}
+
+
+	switch (hw->phy_type) {
+	case SK_PHY_XMAC:
+		xm_phy_init(skge);
+		break;
+	case SK_PHY_BCOM:
+		bcom_phy_init(skge);
+		bcom_check_link(hw, port);
+	}
+
+	/* Set Station Address */
+	xm_outaddr(hw, port, XM_SA, dev->dev_addr);
+
+	/* We don't use match addresses so clear */
+	for (i = 1; i < 16; i++)
+		xm_outaddr(hw, port, XM_EXM(i), zero);
+
+	/* Clear MIB counters */
+	xm_write16(hw, port, XM_STAT_CMD,
+			XM_SC_CLR_RXC | XM_SC_CLR_TXC);
+	/* Clear two times according to Errata #3 */
+	xm_write16(hw, port, XM_STAT_CMD,
+			XM_SC_CLR_RXC | XM_SC_CLR_TXC);
+
+	/* configure Rx High Water Mark (XM_RX_HI_WM) */
+	xm_write16(hw, port, XM_RX_HI_WM, 1450);
+
+	/* We don't need the FCS appended to the packet. */
+	r = XM_RX_LENERR_OK | XM_RX_STRIP_FCS;
+	if (jumbo)
+		r |= XM_RX_BIG_PK_OK;
+
+	if (skge->duplex == DUPLEX_HALF) {
+		/*
+		 * If in manual half duplex mode the other side might be in
+		 * full duplex mode, so ignore if a carrier extension is not seen
+		 * on frames received
+		 */
+		r |= XM_RX_DIS_CEXT;
+	}
+	xm_write16(hw, port, XM_RX_CMD, r);
+
+	/* We want short frames padded to 60 bytes. */
+	xm_write16(hw, port, XM_TX_CMD, XM_TX_AUTO_PAD);
+
+	/* Increase threshold for jumbo frames on dual port */
+	if (hw->ports > 1 && jumbo)
+		xm_write16(hw, port, XM_TX_THR, 1020);
+	else
+		xm_write16(hw, port, XM_TX_THR, 512);
+
+	/*
+	 * Enable the reception of all error frames. This is
+	 * a necessary evil due to the design of the XMAC. The
+	 * XMAC's receive FIFO is only 8K in size, however jumbo
+	 * frames can be up to 9000 bytes in length. When bad
+	 * frame filtering is enabled, the XMAC's RX FIFO operates
+	 * in 'store and forward' mode. For this to work, the
+	 * entire frame has to fit into the FIFO, but that means
+	 * that jumbo frames larger than 8192 bytes will be
+	 * truncated. Disabling all bad frame filtering causes
+	 * the RX FIFO to operate in streaming mode, in which
+	 * case the XMAC will start transferring frames out of the
+	 * RX FIFO as soon as the FIFO threshold is reached.
+	 */
+	xm_write32(hw, port, XM_MODE, XM_DEF_MODE);
+
+
+	/*
+	 * Initialize the Receive Counter Event Mask (XM_RX_EV_MSK)
+	 *	- Enable all bits excepting 'Octets Rx OK Low CntOv'
+	 *	  and 'Octets Rx OK Hi Cnt Ov'.
+	 */
+	xm_write32(hw, port, XM_RX_EV_MSK, XMR_DEF_MSK);
+
+	/*
+	 * Initialize the Transmit Counter Event Mask (XM_TX_EV_MSK)
+	 *	- Enable all bits excepting 'Octets Tx OK Low CntOv'
+	 *	  and 'Octets Tx OK Hi Cnt Ov'.
+	 */
+	xm_write32(hw, port, XM_TX_EV_MSK, XMT_DEF_MSK);
+
+	/* Configure MAC arbiter */
+	skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
+
+	/* configure timeout values */
+	skge_write8(hw, B3_MA_TOINI_RX1, 72);
+	skge_write8(hw, B3_MA_TOINI_RX2, 72);
+	skge_write8(hw, B3_MA_TOINI_TX1, 72);
+	skge_write8(hw, B3_MA_TOINI_TX2, 72);
+
+	skge_write8(hw, B3_MA_RCINI_RX1, 0);
+	skge_write8(hw, B3_MA_RCINI_RX2, 0);
+	skge_write8(hw, B3_MA_RCINI_TX1, 0);
+	skge_write8(hw, B3_MA_RCINI_TX2, 0);
+
+	/* Configure Rx MAC FIFO */
+	skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_CLR);
+	skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_TIM_PAT);
+	skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_ENA_OP_MD);
+
+	/* Configure Tx MAC FIFO */
+	skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_CLR);
+	skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_TX_CTRL_DEF);
+	skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_ENA_OP_MD);
+
+	if (jumbo) {
+		/* Enable frame flushing if jumbo frames used */
+		skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_FLUSH);
+	} else {
+		/* enable timeout timers if normal frames */
+		skge_write16(hw, B3_PA_CTRL,
+			     (port == 0) ? PA_ENA_TO_TX1 : PA_ENA_TO_TX2);
+	}
+}
+
+static void genesis_stop(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	unsigned retries = 1000;
+	u16 cmd;
+
+	/* Disable Tx and Rx */
+	cmd = xm_read16(hw, port, XM_MMU_CMD);
+	cmd &= ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX);
+	xm_write16(hw, port, XM_MMU_CMD, cmd);
+
+	genesis_reset(hw, port);
+
+	/* Clear Tx packet arbiter timeout IRQ */
+	skge_write16(hw, B3_PA_CTRL,
+		     port == 0 ? PA_CLR_TO_TX1 : PA_CLR_TO_TX2);
+
+	/* Reset the MAC */
+	skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);
+	do {
+		skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_SET_MAC_RST);
+		if (!(skge_read16(hw, SK_REG(port, TX_MFF_CTRL1)) & MFF_SET_MAC_RST))
+			break;
+	} while (--retries > 0);
+
+	/* For external PHYs there must be special handling */
+	if (hw->phy_type != SK_PHY_XMAC) {
+		u32 reg = skge_read32(hw, B2_GP_IO);
+		if (port == 0) {
+			reg |= GP_DIR_0;
+			reg &= ~GP_IO_0;
+		} else {
+			reg |= GP_DIR_2;
+			reg &= ~GP_IO_2;
+		}
+		skge_write32(hw, B2_GP_IO, reg);
+		skge_read32(hw, B2_GP_IO);
+	}
+
+	xm_write16(hw, port, XM_MMU_CMD,
+			xm_read16(hw, port, XM_MMU_CMD)
+			& ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX));
+
+	xm_read16(hw, port, XM_MMU_CMD);
+}
+
+
+static void genesis_get_stats(struct skge_port *skge, u64 *data)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	int i;
+	unsigned long timeout = jiffies + HZ;
+
+	xm_write16(hw, port,
+			XM_STAT_CMD, XM_SC_SNP_TXC | XM_SC_SNP_RXC);
+
+	/* wait for update to complete */
+	while (xm_read16(hw, port, XM_STAT_CMD)
+	       & (XM_SC_SNP_TXC | XM_SC_SNP_RXC)) {
+		if (time_after(jiffies, timeout))
+			break;
+		udelay(10);
+	}
+
+	/* special case for 64 bit octet counter */
+	data[0] = (u64) xm_read32(hw, port, XM_TXO_OK_HI) << 32
+		| xm_read32(hw, port, XM_TXO_OK_LO);
+	data[1] = (u64) xm_read32(hw, port, XM_RXO_OK_HI) << 32
+		| xm_read32(hw, port, XM_RXO_OK_LO);
+
+	for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
+		data[i] = xm_read32(hw, port, skge_stats[i].xmac_offset);
+}
+
+static void genesis_mac_intr(struct skge_hw *hw, int port)
+{
+	struct net_device *dev = hw->dev[port];
+	struct skge_port *skge = netdev_priv(dev);
+	u16 status = xm_read16(hw, port, XM_ISRC);
+
+	netif_printk(skge, intr, KERN_DEBUG, skge->netdev,
+		     "mac interrupt status 0x%x\n", status);
+
+	if (hw->phy_type == SK_PHY_XMAC && (status & XM_IS_INP_ASS)) {
+		xm_link_down(hw, port);
+		mod_timer(&skge->link_timer, jiffies + 1);
+	}
+
+	if (status & XM_IS_TXF_UR) {
+		xm_write32(hw, port, XM_MODE, XM_MD_FTF);
+		++dev->stats.tx_fifo_errors;
+	}
+}
+
+static void genesis_link_up(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u16 cmd, msk;
+	u32 mode;
+
+	cmd = xm_read16(hw, port, XM_MMU_CMD);
+
+	/*
+	 * enabling pause frame reception is required for 1000BT
+	 * because the XMAC is not reset if the link is going down
+	 */
+	if (skge->flow_status == FLOW_STAT_NONE ||
+	    skge->flow_status == FLOW_STAT_LOC_SEND)
+		/* Disable Pause Frame Reception */
+		cmd |= XM_MMU_IGN_PF;
+	else
+		/* Enable Pause Frame Reception */
+		cmd &= ~XM_MMU_IGN_PF;
+
+	xm_write16(hw, port, XM_MMU_CMD, cmd);
+
+	mode = xm_read32(hw, port, XM_MODE);
+	if (skge->flow_status == FLOW_STAT_SYMMETRIC ||
+	    skge->flow_status == FLOW_STAT_LOC_SEND) {
+		/*
+		 * Configure Pause Frame Generation
+		 * Use internal and external Pause Frame Generation.
+		 * Sending pause frames is edge triggered.
+		 * Send a Pause frame with the maximum pause time if
+		 * internal oder external FIFO full condition occurs.
+		 * Send a zero pause time frame to re-start transmission.
+		 */
+		/* XM_PAUSE_DA = '010000C28001' (default) */
+		/* XM_MAC_PTIME = 0xffff (maximum) */
+		/* remember this value is defined in big endian (!) */
+		xm_write16(hw, port, XM_MAC_PTIME, 0xffff);
+
+		mode |= XM_PAUSE_MODE;
+		skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_PAUSE);
+	} else {
+		/*
+		 * disable pause frame generation is required for 1000BT
+		 * because the XMAC is not reset if the link is going down
+		 */
+		/* Disable Pause Mode in Mode Register */
+		mode &= ~XM_PAUSE_MODE;
+
+		skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_DIS_PAUSE);
+	}
+
+	xm_write32(hw, port, XM_MODE, mode);
+
+	/* Turn on detection of Tx underrun */
+	msk = xm_read16(hw, port, XM_IMSK);
+	msk &= ~XM_IS_TXF_UR;
+	xm_write16(hw, port, XM_IMSK, msk);
+
+	xm_read16(hw, port, XM_ISRC);
+
+	/* get MMU Command Reg. */
+	cmd = xm_read16(hw, port, XM_MMU_CMD);
+	if (hw->phy_type != SK_PHY_XMAC && skge->duplex == DUPLEX_FULL)
+		cmd |= XM_MMU_GMII_FD;
+
+	/*
+	 * Workaround BCOM Errata (#10523) for all BCom Phys
+	 * Enable Power Management after link up
+	 */
+	if (hw->phy_type == SK_PHY_BCOM) {
+		xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
+			     xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL)
+			     & ~PHY_B_AC_DIS_PM);
+		xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
+	}
+
+	/* enable Rx/Tx */
+	xm_write16(hw, port, XM_MMU_CMD,
+			cmd | XM_MMU_ENA_RX | XM_MMU_ENA_TX);
+	skge_link_up(skge);
+}
+
+
+static inline void bcom_phy_intr(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u16 isrc;
+
+	isrc = xm_phy_read(hw, port, PHY_BCOM_INT_STAT);
+	netif_printk(skge, intr, KERN_DEBUG, skge->netdev,
+		     "phy interrupt status 0x%x\n", isrc);
+
+	if (isrc & PHY_B_IS_PSE)
+		pr_err("%s: uncorrectable pair swap error\n",
+		       hw->dev[port]->name);
+
+	/* Workaround BCom Errata:
+	 *	enable and disable loopback mode if "NO HCD" occurs.
+	 */
+	if (isrc & PHY_B_IS_NO_HDCL) {
+		u16 ctrl = xm_phy_read(hw, port, PHY_BCOM_CTRL);
+		xm_phy_write(hw, port, PHY_BCOM_CTRL,
+				  ctrl | PHY_CT_LOOP);
+		xm_phy_write(hw, port, PHY_BCOM_CTRL,
+				  ctrl & ~PHY_CT_LOOP);
+	}
+
+	if (isrc & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE))
+		bcom_check_link(hw, port);
+
+}
+
+static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
+{
+	int i;
+
+	gma_write16(hw, port, GM_SMI_DATA, val);
+	gma_write16(hw, port, GM_SMI_CTRL,
+			 GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg));
+	for (i = 0; i < PHY_RETRIES; i++) {
+		udelay(1);
+
+		if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
+			return 0;
+	}
+
+	pr_warn("%s: phy write timeout\n", hw->dev[port]->name);
+	return -EIO;
+}
+
+static int __gm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
+{
+	int i;
+
+	gma_write16(hw, port, GM_SMI_CTRL,
+			 GM_SMI_CT_PHY_AD(hw->phy_addr)
+			 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
+
+	for (i = 0; i < PHY_RETRIES; i++) {
+		udelay(1);
+		if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL)
+			goto ready;
+	}
+
+	return -ETIMEDOUT;
+ ready:
+	*val = gma_read16(hw, port, GM_SMI_DATA);
+	return 0;
+}
+
+static u16 gm_phy_read(struct skge_hw *hw, int port, u16 reg)
+{
+	u16 v = 0;
+	if (__gm_phy_read(hw, port, reg, &v))
+		pr_warn("%s: phy read timeout\n", hw->dev[port]->name);
+	return v;
+}
+
+/* Marvell Phy Initialization */
+static void yukon_init(struct skge_hw *hw, int port)
+{
+	struct skge_port *skge = netdev_priv(hw->dev[port]);
+	u16 ctrl, ct1000, adv;
+
+	if (skge->autoneg == AUTONEG_ENABLE) {
+		u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
+
+		ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
+			  PHY_M_EC_MAC_S_MSK);
+		ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
+
+		ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
+
+		gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
+	}
+
+	ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
+	if (skge->autoneg == AUTONEG_DISABLE)
+		ctrl &= ~PHY_CT_ANE;
+
+	ctrl |= PHY_CT_RESET;
+	gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
+
+	ctrl = 0;
+	ct1000 = 0;
+	adv = PHY_AN_CSMA;
+
+	if (skge->autoneg == AUTONEG_ENABLE) {
+		if (hw->copper) {
+			if (skge->advertising & ADVERTISED_1000baseT_Full)
+				ct1000 |= PHY_M_1000C_AFD;
+			if (skge->advertising & ADVERTISED_1000baseT_Half)
+				ct1000 |= PHY_M_1000C_AHD;
+			if (skge->advertising & ADVERTISED_100baseT_Full)
+				adv |= PHY_M_AN_100_FD;
+			if (skge->advertising & ADVERTISED_100baseT_Half)
+				adv |= PHY_M_AN_100_HD;
+			if (skge->advertising & ADVERTISED_10baseT_Full)
+				adv |= PHY_M_AN_10_FD;
+			if (skge->advertising & ADVERTISED_10baseT_Half)
+				adv |= PHY_M_AN_10_HD;
+
+			/* Set Flow-control capabilities */
+			adv |= phy_pause_map[skge->flow_control];
+		} else {
+			if (skge->advertising & ADVERTISED_1000baseT_Full)
+				adv |= PHY_M_AN_1000X_AFD;
+			if (skge->advertising & ADVERTISED_1000baseT_Half)
+				adv |= PHY_M_AN_1000X_AHD;
+
+			adv |= fiber_pause_map[skge->flow_control];
+		}
+
+		/* Restart Auto-negotiation */
+		ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
+	} else {
+		/* forced speed/duplex settings */
+		ct1000 = PHY_M_1000C_MSE;
+
+		if (skge->duplex == DUPLEX_FULL)
+			ctrl |= PHY_CT_DUP_MD;
+
+		switch (skge->speed) {
+		case SPEED_1000:
+			ctrl |= PHY_CT_SP1000;
+			break;
+		case SPEED_100:
+			ctrl |= PHY_CT_SP100;
+			break;
+		}
+
+		ctrl |= PHY_CT_RESET;
+	}
+
+	gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
+
+	gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
+	gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
+
+	/* Enable phy interrupt on autonegotiation complete (or link up) */
+	if (skge->autoneg == AUTONEG_ENABLE)
+		gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_MSK);
+	else
+		gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
+}
+
+static void yukon_reset(struct skge_hw *hw, int port)
+{
+	gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);/* disable PHY IRQs */
+	gma_write16(hw, port, GM_MC_ADDR_H1, 0);	/* clear MC hash */
+	gma_write16(hw, port, GM_MC_ADDR_H2, 0);
+	gma_write16(hw, port, GM_MC_ADDR_H3, 0);
+	gma_write16(hw, port, GM_MC_ADDR_H4, 0);
+
+	gma_write16(hw, port, GM_RX_CTRL,
+			 gma_read16(hw, port, GM_RX_CTRL)
+			 | GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
+}
+
+/* Apparently, early versions of Yukon-Lite had wrong chip_id? */
+static int is_yukon_lite_a0(struct skge_hw *hw)
+{
+	u32 reg;
+	int ret;
+
+	if (hw->chip_id != CHIP_ID_YUKON)
+		return 0;
+
+	reg = skge_read32(hw, B2_FAR);
+	skge_write8(hw, B2_FAR + 3, 0xff);
+	ret = (skge_read8(hw, B2_FAR + 3) != 0);
+	skge_write32(hw, B2_FAR, reg);
+	return ret;
+}
+
+static void yukon_mac_init(struct skge_hw *hw, int port)
+{
+	struct skge_port *skge = netdev_priv(hw->dev[port]);
+	int i;
+	u32 reg;
+	const u8 *addr = hw->dev[port]->dev_addr;
+
+	/* WA code for COMA mode -- set PHY reset */
+	if (hw->chip_id == CHIP_ID_YUKON_LITE &&
+	    hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
+		reg = skge_read32(hw, B2_GP_IO);
+		reg |= GP_DIR_9 | GP_IO_9;
+		skge_write32(hw, B2_GP_IO, reg);
+	}
+
+	/* hard reset */
+	skge_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
+	skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
+
+	/* WA code for COMA mode -- clear PHY reset */
+	if (hw->chip_id == CHIP_ID_YUKON_LITE &&
+	    hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
+		reg = skge_read32(hw, B2_GP_IO);
+		reg |= GP_DIR_9;
+		reg &= ~GP_IO_9;
+		skge_write32(hw, B2_GP_IO, reg);
+	}
+
+	/* Set hardware config mode */
+	reg = GPC_INT_POL_HI | GPC_DIS_FC | GPC_DIS_SLEEP |
+		GPC_ENA_XC | GPC_ANEG_ADV_ALL_M | GPC_ENA_PAUSE;
+	reg |= hw->copper ? GPC_HWCFG_GMII_COP : GPC_HWCFG_GMII_FIB;
+
+	/* Clear GMC reset */
+	skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_SET);
+	skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_CLR);
+	skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON | GMC_RST_CLR);
+
+	if (skge->autoneg == AUTONEG_DISABLE) {
+		reg = GM_GPCR_AU_ALL_DIS;
+		gma_write16(hw, port, GM_GP_CTRL,
+				 gma_read16(hw, port, GM_GP_CTRL) | reg);
+
+		switch (skge->speed) {
+		case SPEED_1000:
+			reg &= ~GM_GPCR_SPEED_100;
+			reg |= GM_GPCR_SPEED_1000;
+			break;
+		case SPEED_100:
+			reg &= ~GM_GPCR_SPEED_1000;
+			reg |= GM_GPCR_SPEED_100;
+			break;
+		case SPEED_10:
+			reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
+			break;
+		}
+
+		if (skge->duplex == DUPLEX_FULL)
+			reg |= GM_GPCR_DUP_FULL;
+	} else
+		reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
+
+	switch (skge->flow_control) {
+	case FLOW_MODE_NONE:
+		skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
+		reg |= GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
+		break;
+	case FLOW_MODE_LOC_SEND:
+		/* disable Rx flow-control */
+		reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
+		break;
+	case FLOW_MODE_SYMMETRIC:
+	case FLOW_MODE_SYM_OR_REM:
+		/* enable Tx & Rx flow-control */
+		break;
+	}
+
+	gma_write16(hw, port, GM_GP_CTRL, reg);
+	skge_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
+
+	yukon_init(hw, port);
+
+	/* MIB clear */
+	reg = gma_read16(hw, port, GM_PHY_ADDR);
+	gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
+
+	for (i = 0; i < GM_MIB_CNT_SIZE; i++)
+		gma_read16(hw, port, GM_MIB_CNT_BASE + 8*i);
+	gma_write16(hw, port, GM_PHY_ADDR, reg);
+
+	/* transmit control */
+	gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
+
+	/* receive control reg: unicast + multicast + no FCS  */
+	gma_write16(hw, port, GM_RX_CTRL,
+			 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
+
+	/* transmit flow control */
+	gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
+
+	/* transmit parameter */
+	gma_write16(hw, port, GM_TX_PARAM,
+			 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
+			 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
+			 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF));
+
+	/* configure the Serial Mode Register */
+	reg = DATA_BLIND_VAL(DATA_BLIND_DEF)
+		| GM_SMOD_VLAN_ENA
+		| IPG_DATA_VAL(IPG_DATA_DEF);
+
+	if (hw->dev[port]->mtu > ETH_DATA_LEN)
+		reg |= GM_SMOD_JUMBO_ENA;
+
+	gma_write16(hw, port, GM_SERIAL_MODE, reg);
+
+	/* physical address: used for pause frames */
+	gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
+	/* virtual address for data */
+	gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
+
+	/* enable interrupt mask for counter overflows */
+	gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
+	gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
+	gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
+
+	/* Initialize Mac Fifo */
+
+	/* Configure Rx MAC FIFO */
+	skge_write16(hw, SK_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK);
+	reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
+
+	/* disable Rx GMAC FIFO Flush for YUKON-Lite Rev. A0 only */
+	if (is_yukon_lite_a0(hw))
+		reg &= ~GMF_RX_F_FL_ON;
+
+	skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
+	skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);
+	/*
+	 * because Pause Packet Truncation in GMAC is not working
+	 * we have to increase the Flush Threshold to 64 bytes
+	 * in order to flush pause packets in Rx FIFO on Yukon-1
+	 */
+	skge_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF+1);
+
+	/* Configure Tx MAC FIFO */
+	skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
+	skge_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
+}
+
+/* Go into power down mode */
+static void yukon_suspend(struct skge_hw *hw, int port)
+{
+	u16 ctrl;
+
+	ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
+	ctrl |= PHY_M_PC_POL_R_DIS;
+	gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
+
+	ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
+	ctrl |= PHY_CT_RESET;
+	gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
+
+	/* switch IEEE compatible power down mode on */
+	ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
+	ctrl |= PHY_CT_PDOWN;
+	gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
+}
+
+static void yukon_stop(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+
+	skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
+	yukon_reset(hw, port);
+
+	gma_write16(hw, port, GM_GP_CTRL,
+			 gma_read16(hw, port, GM_GP_CTRL)
+			 & ~(GM_GPCR_TX_ENA|GM_GPCR_RX_ENA));
+	gma_read16(hw, port, GM_GP_CTRL);
+
+	yukon_suspend(hw, port);
+
+	/* set GPHY Control reset */
+	skge_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
+	skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
+}
+
+static void yukon_get_stats(struct skge_port *skge, u64 *data)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	int i;
+
+	data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
+		| gma_read32(hw, port, GM_TXO_OK_LO);
+	data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
+		| gma_read32(hw, port, GM_RXO_OK_LO);
+
+	for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
+		data[i] = gma_read32(hw, port,
+					  skge_stats[i].gma_offset);
+}
+
+static void yukon_mac_intr(struct skge_hw *hw, int port)
+{
+	struct net_device *dev = hw->dev[port];
+	struct skge_port *skge = netdev_priv(dev);
+	u8 status = skge_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
+
+	netif_printk(skge, intr, KERN_DEBUG, skge->netdev,
+		     "mac interrupt status 0x%x\n", status);
+
+	if (status & GM_IS_RX_FF_OR) {
+		++dev->stats.rx_fifo_errors;
+		skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
+	}
+
+	if (status & GM_IS_TX_FF_UR) {
+		++dev->stats.tx_fifo_errors;
+		skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
+	}
+
+}
+
+static u16 yukon_speed(const struct skge_hw *hw, u16 aux)
+{
+	switch (aux & PHY_M_PS_SPEED_MSK) {
+	case PHY_M_PS_SPEED_1000:
+		return SPEED_1000;
+	case PHY_M_PS_SPEED_100:
+		return SPEED_100;
+	default:
+		return SPEED_10;
+	}
+}
+
+static void yukon_link_up(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u16 reg;
+
+	/* Enable Transmit FIFO Underrun */
+	skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
+
+	reg = gma_read16(hw, port, GM_GP_CTRL);
+	if (skge->duplex == DUPLEX_FULL || skge->autoneg == AUTONEG_ENABLE)
+		reg |= GM_GPCR_DUP_FULL;
+
+	/* enable Rx/Tx */
+	reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
+	gma_write16(hw, port, GM_GP_CTRL, reg);
+
+	gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
+	skge_link_up(skge);
+}
+
+static void yukon_link_down(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u16 ctrl;
+
+	ctrl = gma_read16(hw, port, GM_GP_CTRL);
+	ctrl &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
+	gma_write16(hw, port, GM_GP_CTRL, ctrl);
+
+	if (skge->flow_status == FLOW_STAT_REM_SEND) {
+		ctrl = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
+		ctrl |= PHY_M_AN_ASP;
+		/* restore Asymmetric Pause bit */
+		gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, ctrl);
+	}
+
+	skge_link_down(skge);
+
+	yukon_init(hw, port);
+}
+
+static void yukon_phy_intr(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	const char *reason = NULL;
+	u16 istatus, phystat;
+
+	istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
+	phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
+
+	netif_printk(skge, intr, KERN_DEBUG, skge->netdev,
+		     "phy interrupt status 0x%x 0x%x\n", istatus, phystat);
+
+	if (istatus & PHY_M_IS_AN_COMPL) {
+		if (gm_phy_read(hw, port, PHY_MARV_AUNE_LP)
+		    & PHY_M_AN_RF) {
+			reason = "remote fault";
+			goto failed;
+		}
+
+		if (gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
+			reason = "master/slave fault";
+			goto failed;
+		}
+
+		if (!(phystat & PHY_M_PS_SPDUP_RES)) {
+			reason = "speed/duplex";
+			goto failed;
+		}
+
+		skge->duplex = (phystat & PHY_M_PS_FULL_DUP)
+			? DUPLEX_FULL : DUPLEX_HALF;
+		skge->speed = yukon_speed(hw, phystat);
+
+		/* We are using IEEE 802.3z/D5.0 Table 37-4 */
+		switch (phystat & PHY_M_PS_PAUSE_MSK) {
+		case PHY_M_PS_PAUSE_MSK:
+			skge->flow_status = FLOW_STAT_SYMMETRIC;
+			break;
+		case PHY_M_PS_RX_P_EN:
+			skge->flow_status = FLOW_STAT_REM_SEND;
+			break;
+		case PHY_M_PS_TX_P_EN:
+			skge->flow_status = FLOW_STAT_LOC_SEND;
+			break;
+		default:
+			skge->flow_status = FLOW_STAT_NONE;
+		}
+
+		if (skge->flow_status == FLOW_STAT_NONE ||
+		    (skge->speed < SPEED_1000 && skge->duplex == DUPLEX_HALF))
+			skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
+		else
+			skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
+		yukon_link_up(skge);
+		return;
+	}
+
+	if (istatus & PHY_M_IS_LSP_CHANGE)
+		skge->speed = yukon_speed(hw, phystat);
+
+	if (istatus & PHY_M_IS_DUP_CHANGE)
+		skge->duplex = (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
+	if (istatus & PHY_M_IS_LST_CHANGE) {
+		if (phystat & PHY_M_PS_LINK_UP)
+			yukon_link_up(skge);
+		else
+			yukon_link_down(skge);
+	}
+	return;
+ failed:
+	pr_err("%s: autonegotiation failed (%s)\n", skge->netdev->name, reason);
+
+	/* XXX restart autonegotiation? */
+}
+
+static void skge_phy_reset(struct skge_port *skge)
+{
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	struct net_device *dev = hw->dev[port];
+
+	netif_stop_queue(skge->netdev);
+	netif_carrier_off(skge->netdev);
+
+	spin_lock_bh(&hw->phy_lock);
+	if (is_genesis(hw)) {
+		genesis_reset(hw, port);
+		genesis_mac_init(hw, port);
+	} else {
+		yukon_reset(hw, port);
+		yukon_init(hw, port);
+	}
+	spin_unlock_bh(&hw->phy_lock);
+
+	skge_set_multicast(dev);
+}
+
+/* Basic MII support */
+static int skge_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct mii_ioctl_data *data = if_mii(ifr);
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int err = -EOPNOTSUPP;
+
+	if (!netif_running(dev))
+		return -ENODEV;	/* Phy still in reset */
+
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		data->phy_id = hw->phy_addr;
+
+		fallthrough;
+	case SIOCGMIIREG: {
+		u16 val = 0;
+		spin_lock_bh(&hw->phy_lock);
+
+		if (is_genesis(hw))
+			err = __xm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
+		else
+			err = __gm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
+		spin_unlock_bh(&hw->phy_lock);
+		data->val_out = val;
+		break;
+	}
+
+	case SIOCSMIIREG:
+		spin_lock_bh(&hw->phy_lock);
+		if (is_genesis(hw))
+			err = xm_phy_write(hw, skge->port, data->reg_num & 0x1f,
+				   data->val_in);
+		else
+			err = gm_phy_write(hw, skge->port, data->reg_num & 0x1f,
+				   data->val_in);
+		spin_unlock_bh(&hw->phy_lock);
+		break;
+	}
+	return err;
+}
+
+static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, size_t len)
+{
+	u32 end;
+
+	start /= 8;
+	len /= 8;
+	end = start + len - 1;
+
+	skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
+	skge_write32(hw, RB_ADDR(q, RB_START), start);
+	skge_write32(hw, RB_ADDR(q, RB_WP), start);
+	skge_write32(hw, RB_ADDR(q, RB_RP), start);
+	skge_write32(hw, RB_ADDR(q, RB_END), end);
+
+	if (q == Q_R1 || q == Q_R2) {
+		/* Set thresholds on receive queue's */
+		skge_write32(hw, RB_ADDR(q, RB_RX_UTPP),
+			     start + (2*len)/3);
+		skge_write32(hw, RB_ADDR(q, RB_RX_LTPP),
+			     start + (len/3));
+	} else {
+		/* Enable store & forward on Tx queue's because
+		 * Tx FIFO is only 4K on Genesis and 1K on Yukon
+		 */
+		skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
+	}
+
+	skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
+}
+
+/* Setup Bus Memory Interface */
+static void skge_qset(struct skge_port *skge, u16 q,
+		      const struct skge_element *e)
+{
+	struct skge_hw *hw = skge->hw;
+	u32 watermark = 0x600;
+	u64 base = skge->dma + (e->desc - skge->mem);
+
+	/* optimization to reduce window on 32bit/33mhz */
+	if ((skge_read16(hw, B0_CTST) & (CS_BUS_CLOCK | CS_BUS_SLOT_SZ)) == 0)
+		watermark /= 2;
+
+	skge_write32(hw, Q_ADDR(q, Q_CSR), CSR_CLR_RESET);
+	skge_write32(hw, Q_ADDR(q, Q_F), watermark);
+	skge_write32(hw, Q_ADDR(q, Q_DA_H), (u32)(base >> 32));
+	skge_write32(hw, Q_ADDR(q, Q_DA_L), (u32)base);
+}
+
+static int skge_up(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	u32 chunk, ram_addr;
+	size_t rx_size, tx_size;
+	int err;
+
+	if (!is_valid_ether_addr(dev->dev_addr))
+		return -EINVAL;
+
+	netif_info(skge, ifup, skge->netdev, "enabling interface\n");
+
+	if (dev->mtu > RX_BUF_SIZE)
+		skge->rx_buf_size = dev->mtu + ETH_HLEN;
+	else
+		skge->rx_buf_size = RX_BUF_SIZE;
+
+
+	rx_size = skge->rx_ring.count * sizeof(struct skge_rx_desc);
+	tx_size = skge->tx_ring.count * sizeof(struct skge_tx_desc);
+	skge->mem_size = tx_size + rx_size;
+	skge->mem = dma_alloc_coherent(&hw->pdev->dev, skge->mem_size,
+				       &skge->dma, GFP_KERNEL);
+	if (!skge->mem)
+		return -ENOMEM;
+
+	BUG_ON(skge->dma & 7);
+
+	if (upper_32_bits(skge->dma) != upper_32_bits(skge->dma + skge->mem_size)) {
+		dev_err(&hw->pdev->dev, "dma_alloc_coherent region crosses 4G boundary\n");
+		err = -EINVAL;
+		goto free_pci_mem;
+	}
+
+	err = skge_ring_alloc(&skge->rx_ring, skge->mem, skge->dma);
+	if (err)
+		goto free_pci_mem;
+
+	err = skge_rx_fill(dev);
+	if (err)
+		goto free_rx_ring;
+
+	err = skge_ring_alloc(&skge->tx_ring, skge->mem + rx_size,
+			      skge->dma + rx_size);
+	if (err)
+		goto free_rx_ring;
+
+	if (hw->ports == 1) {
+		err = request_irq(hw->pdev->irq, skge_intr, IRQF_SHARED,
+				  dev->name, hw);
+		if (err) {
+			netdev_err(dev, "Unable to allocate interrupt %d error: %d\n",
+				   hw->pdev->irq, err);
+			goto free_tx_ring;
+		}
+	}
+
+	/* Initialize MAC */
+	netif_carrier_off(dev);
+	spin_lock_bh(&hw->phy_lock);
+	if (is_genesis(hw))
+		genesis_mac_init(hw, port);
+	else
+		yukon_mac_init(hw, port);
+	spin_unlock_bh(&hw->phy_lock);
+
+	/* Configure RAMbuffers - equally between ports and tx/rx */
+	chunk = (hw->ram_size  - hw->ram_offset) / (hw->ports * 2);
+	ram_addr = hw->ram_offset + 2 * chunk * port;
+
+	skge_ramset(hw, rxqaddr[port], ram_addr, chunk);
+	skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean);
+
+	BUG_ON(skge->tx_ring.to_use != skge->tx_ring.to_clean);
+	skge_ramset(hw, txqaddr[port], ram_addr+chunk, chunk);
+	skge_qset(skge, txqaddr[port], skge->tx_ring.to_use);
+
+	/* Start receiver BMU */
+	wmb();
+	skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_START | CSR_IRQ_CL_F);
+	skge_led(skge, LED_MODE_ON);
+
+	spin_lock_irq(&hw->hw_lock);
+	hw->intr_mask |= portmask[port];
+	skge_write32(hw, B0_IMSK, hw->intr_mask);
+	skge_read32(hw, B0_IMSK);
+	spin_unlock_irq(&hw->hw_lock);
+
+	napi_enable(&skge->napi);
+
+	skge_set_multicast(dev);
+
+	return 0;
+
+ free_tx_ring:
+	kfree(skge->tx_ring.start);
+ free_rx_ring:
+	skge_rx_clean(skge);
+	kfree(skge->rx_ring.start);
+ free_pci_mem:
+	dma_free_coherent(&hw->pdev->dev, skge->mem_size, skge->mem,
+			  skge->dma);
+	skge->mem = NULL;
+
+	return err;
+}
+
+/* stop receiver */
+static void skge_rx_stop(struct skge_hw *hw, int port)
+{
+	skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_STOP);
+	skge_write32(hw, RB_ADDR(port ? Q_R2 : Q_R1, RB_CTRL),
+		     RB_RST_SET|RB_DIS_OP_MD);
+	skge_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_SET_RESET);
+}
+
+static int skge_down(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+
+	if (!skge->mem)
+		return 0;
+
+	netif_info(skge, ifdown, skge->netdev, "disabling interface\n");
+
+	netif_tx_disable(dev);
+
+	if (is_genesis(hw) && hw->phy_type == SK_PHY_XMAC)
+		del_timer_sync(&skge->link_timer);
+
+	napi_disable(&skge->napi);
+	netif_carrier_off(dev);
+
+	spin_lock_irq(&hw->hw_lock);
+	hw->intr_mask &= ~portmask[port];
+	skge_write32(hw, B0_IMSK, (hw->ports == 1) ? 0 : hw->intr_mask);
+	skge_read32(hw, B0_IMSK);
+	spin_unlock_irq(&hw->hw_lock);
+
+	if (hw->ports == 1)
+		free_irq(hw->pdev->irq, hw);
+
+	skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_REG_OFF);
+	if (is_genesis(hw))
+		genesis_stop(skge);
+	else
+		yukon_stop(skge);
+
+	/* Stop transmitter */
+	skge_write8(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_STOP);
+	skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
+		     RB_RST_SET|RB_DIS_OP_MD);
+
+
+	/* Disable Force Sync bit and Enable Alloc bit */
+	skge_write8(hw, SK_REG(port, TXA_CTRL),
+		    TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
+
+	/* Stop Interval Timer and Limit Counter of Tx Arbiter */
+	skge_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
+	skge_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
+
+	/* Reset PCI FIFO */
+	skge_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_SET_RESET);
+	skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
+
+	/* Reset the RAM Buffer async Tx queue */
+	skge_write8(hw, RB_ADDR(port == 0 ? Q_XA1 : Q_XA2, RB_CTRL), RB_RST_SET);
+
+	skge_rx_stop(hw, port);
+
+	if (is_genesis(hw)) {
+		skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_SET);
+		skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_SET);
+	} else {
+		skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
+		skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
+	}
+
+	skge_led(skge, LED_MODE_OFF);
+
+	netif_tx_lock_bh(dev);
+	skge_tx_clean(dev);
+	netif_tx_unlock_bh(dev);
+
+	skge_rx_clean(skge);
+
+	kfree(skge->rx_ring.start);
+	kfree(skge->tx_ring.start);
+	dma_free_coherent(&hw->pdev->dev, skge->mem_size, skge->mem,
+			  skge->dma);
+	skge->mem = NULL;
+	return 0;
+}
+
+static inline int skge_avail(const struct skge_ring *ring)
+{
+	smp_mb();
+	return ((ring->to_clean > ring->to_use) ? 0 : ring->count)
+		+ (ring->to_clean - ring->to_use) - 1;
+}
+
+static netdev_tx_t skge_xmit_frame(struct sk_buff *skb,
+				   struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	struct skge_element *e;
+	struct skge_tx_desc *td;
+	int i;
+	u32 control, len;
+	dma_addr_t map;
+
+	if (skb_padto(skb, ETH_ZLEN))
+		return NETDEV_TX_OK;
+
+	if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1))
+		return NETDEV_TX_BUSY;
+
+	e = skge->tx_ring.to_use;
+	td = e->desc;
+	BUG_ON(td->control & BMU_OWN);
+	e->skb = skb;
+	len = skb_headlen(skb);
+	map = dma_map_single(&hw->pdev->dev, skb->data, len, DMA_TO_DEVICE);
+	if (dma_mapping_error(&hw->pdev->dev, map))
+		goto mapping_error;
+
+	dma_unmap_addr_set(e, mapaddr, map);
+	dma_unmap_len_set(e, maplen, len);
+
+	td->dma_lo = lower_32_bits(map);
+	td->dma_hi = upper_32_bits(map);
+
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		const int offset = skb_checksum_start_offset(skb);
+
+		/* This seems backwards, but it is what the sk98lin
+		 * does.  Looks like hardware is wrong?
+		 */
+		if (ipip_hdr(skb)->protocol == IPPROTO_UDP &&
+		    hw->chip_rev == 0 && hw->chip_id == CHIP_ID_YUKON)
+			control = BMU_TCP_CHECK;
+		else
+			control = BMU_UDP_CHECK;
+
+		td->csum_offs = 0;
+		td->csum_start = offset;
+		td->csum_write = offset + skb->csum_offset;
+	} else
+		control = BMU_CHECK;
+
+	if (!skb_shinfo(skb)->nr_frags) /* single buffer i.e. no fragments */
+		control |= BMU_EOF | BMU_IRQ_EOF;
+	else {
+		struct skge_tx_desc *tf = td;
+
+		control |= BMU_STFWD;
+		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+			const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+			map = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
+					       skb_frag_size(frag), DMA_TO_DEVICE);
+			if (dma_mapping_error(&hw->pdev->dev, map))
+				goto mapping_unwind;
+
+			e = e->next;
+			e->skb = skb;
+			tf = e->desc;
+			BUG_ON(tf->control & BMU_OWN);
+
+			tf->dma_lo = lower_32_bits(map);
+			tf->dma_hi = upper_32_bits(map);
+			dma_unmap_addr_set(e, mapaddr, map);
+			dma_unmap_len_set(e, maplen, skb_frag_size(frag));
+
+			tf->control = BMU_OWN | BMU_SW | control | skb_frag_size(frag);
+		}
+		tf->control |= BMU_EOF | BMU_IRQ_EOF;
+	}
+	/* Make sure all the descriptors written */
+	wmb();
+	td->control = BMU_OWN | BMU_SW | BMU_STF | control | len;
+	wmb();
+
+	netdev_sent_queue(dev, skb->len);
+
+	skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_START);
+
+	netif_printk(skge, tx_queued, KERN_DEBUG, skge->netdev,
+		     "tx queued, slot %td, len %d\n",
+		     e - skge->tx_ring.start, skb->len);
+
+	skge->tx_ring.to_use = e->next;
+	smp_wmb();
+
+	if (skge_avail(&skge->tx_ring) <= TX_LOW_WATER) {
+		netdev_dbg(dev, "transmit queue full\n");
+		netif_stop_queue(dev);
+	}
+
+	return NETDEV_TX_OK;
+
+mapping_unwind:
+	e = skge->tx_ring.to_use;
+	dma_unmap_single(&hw->pdev->dev, dma_unmap_addr(e, mapaddr),
+			 dma_unmap_len(e, maplen), DMA_TO_DEVICE);
+	while (i-- > 0) {
+		e = e->next;
+		dma_unmap_page(&hw->pdev->dev, dma_unmap_addr(e, mapaddr),
+			       dma_unmap_len(e, maplen), DMA_TO_DEVICE);
+	}
+
+mapping_error:
+	if (net_ratelimit())
+		dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+}
+
+
+/* Free resources associated with this reing element */
+static inline void skge_tx_unmap(struct pci_dev *pdev, struct skge_element *e,
+				 u32 control)
+{
+	/* skb header vs. fragment */
+	if (control & BMU_STF)
+		dma_unmap_single(&pdev->dev, dma_unmap_addr(e, mapaddr),
+				 dma_unmap_len(e, maplen), DMA_TO_DEVICE);
+	else
+		dma_unmap_page(&pdev->dev, dma_unmap_addr(e, mapaddr),
+			       dma_unmap_len(e, maplen), DMA_TO_DEVICE);
+}
+
+/* Free all buffers in transmit ring */
+static void skge_tx_clean(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_element *e;
+
+	for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
+		struct skge_tx_desc *td = e->desc;
+
+		skge_tx_unmap(skge->hw->pdev, e, td->control);
+
+		if (td->control & BMU_EOF)
+			dev_kfree_skb(e->skb);
+		td->control = 0;
+	}
+
+	netdev_reset_queue(dev);
+	skge->tx_ring.to_clean = e;
+}
+
+static void skge_tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	netif_printk(skge, timer, KERN_DEBUG, skge->netdev, "tx timeout\n");
+
+	skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_STOP);
+	skge_tx_clean(dev);
+	netif_wake_queue(dev);
+}
+
+static int skge_change_mtu(struct net_device *dev, int new_mtu)
+{
+	int err;
+
+	if (!netif_running(dev)) {
+		dev->mtu = new_mtu;
+		return 0;
+	}
+
+	skge_down(dev);
+
+	dev->mtu = new_mtu;
+
+	err = skge_up(dev);
+	if (err)
+		dev_close(dev);
+
+	return err;
+}
+
+static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
+
+static void genesis_add_filter(u8 filter[8], const u8 *addr)
+{
+	u32 crc, bit;
+
+	crc = ether_crc_le(ETH_ALEN, addr);
+	bit = ~crc & 0x3f;
+	filter[bit/8] |= 1 << (bit%8);
+}
+
+static void genesis_set_multicast(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	struct netdev_hw_addr *ha;
+	u32 mode;
+	u8 filter[8];
+
+	mode = xm_read32(hw, port, XM_MODE);
+	mode |= XM_MD_ENA_HASH;
+	if (dev->flags & IFF_PROMISC)
+		mode |= XM_MD_ENA_PROM;
+	else
+		mode &= ~XM_MD_ENA_PROM;
+
+	if (dev->flags & IFF_ALLMULTI)
+		memset(filter, 0xff, sizeof(filter));
+	else {
+		memset(filter, 0, sizeof(filter));
+
+		if (skge->flow_status == FLOW_STAT_REM_SEND ||
+		    skge->flow_status == FLOW_STAT_SYMMETRIC)
+			genesis_add_filter(filter, pause_mc_addr);
+
+		netdev_for_each_mc_addr(ha, dev)
+			genesis_add_filter(filter, ha->addr);
+	}
+
+	xm_write32(hw, port, XM_MODE, mode);
+	xm_outhash(hw, port, XM_HSM, filter);
+}
+
+static void yukon_add_filter(u8 filter[8], const u8 *addr)
+{
+	u32 bit = ether_crc(ETH_ALEN, addr) & 0x3f;
+
+	filter[bit / 8] |= 1 << (bit % 8);
+}
+
+static void yukon_set_multicast(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	int port = skge->port;
+	struct netdev_hw_addr *ha;
+	int rx_pause = (skge->flow_status == FLOW_STAT_REM_SEND ||
+			skge->flow_status == FLOW_STAT_SYMMETRIC);
+	u16 reg;
+	u8 filter[8];
+
+	memset(filter, 0, sizeof(filter));
+
+	reg = gma_read16(hw, port, GM_RX_CTRL);
+	reg |= GM_RXCR_UCF_ENA;
+
+	if (dev->flags & IFF_PROMISC) 		/* promiscuous */
+		reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
+	else if (dev->flags & IFF_ALLMULTI)	/* all multicast */
+		memset(filter, 0xff, sizeof(filter));
+	else if (netdev_mc_empty(dev) && !rx_pause)/* no multicast */
+		reg &= ~GM_RXCR_MCF_ENA;
+	else {
+		reg |= GM_RXCR_MCF_ENA;
+
+		if (rx_pause)
+			yukon_add_filter(filter, pause_mc_addr);
+
+		netdev_for_each_mc_addr(ha, dev)
+			yukon_add_filter(filter, ha->addr);
+	}
+
+
+	gma_write16(hw, port, GM_MC_ADDR_H1,
+			 (u16)filter[0] | ((u16)filter[1] << 8));
+	gma_write16(hw, port, GM_MC_ADDR_H2,
+			 (u16)filter[2] | ((u16)filter[3] << 8));
+	gma_write16(hw, port, GM_MC_ADDR_H3,
+			 (u16)filter[4] | ((u16)filter[5] << 8));
+	gma_write16(hw, port, GM_MC_ADDR_H4,
+			 (u16)filter[6] | ((u16)filter[7] << 8));
+
+	gma_write16(hw, port, GM_RX_CTRL, reg);
+}
+
+static inline u16 phy_length(const struct skge_hw *hw, u32 status)
+{
+	if (is_genesis(hw))
+		return status >> XMR_FS_LEN_SHIFT;
+	else
+		return status >> GMR_FS_LEN_SHIFT;
+}
+
+static inline int bad_phy_status(const struct skge_hw *hw, u32 status)
+{
+	if (is_genesis(hw))
+		return (status & (XMR_FS_ERR | XMR_FS_2L_VLAN)) != 0;
+	else
+		return (status & GMR_FS_ANY_ERR) ||
+			(status & GMR_FS_RX_OK) == 0;
+}
+
+static void skge_set_multicast(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	if (is_genesis(skge->hw))
+		genesis_set_multicast(dev);
+	else
+		yukon_set_multicast(dev);
+
+}
+
+
+/* Get receive buffer from descriptor.
+ * Handles copy of small buffers and reallocation failures
+ */
+static struct sk_buff *skge_rx_get(struct net_device *dev,
+				   struct skge_element *e,
+				   u32 control, u32 status, u16 csum)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct sk_buff *skb;
+	u16 len = control & BMU_BBC;
+
+	netif_printk(skge, rx_status, KERN_DEBUG, skge->netdev,
+		     "rx slot %td status 0x%x len %d\n",
+		     e - skge->rx_ring.start, status, len);
+
+	if (len > skge->rx_buf_size)
+		goto error;
+
+	if ((control & (BMU_EOF|BMU_STF)) != (BMU_STF|BMU_EOF))
+		goto error;
+
+	if (bad_phy_status(skge->hw, status))
+		goto error;
+
+	if (phy_length(skge->hw, status) != len)
+		goto error;
+
+	if (len < RX_COPY_THRESHOLD) {
+		skb = netdev_alloc_skb_ip_align(dev, len);
+		if (!skb)
+			goto resubmit;
+
+		dma_sync_single_for_cpu(&skge->hw->pdev->dev,
+					dma_unmap_addr(e, mapaddr),
+					dma_unmap_len(e, maplen),
+					DMA_FROM_DEVICE);
+		skb_copy_from_linear_data(e->skb, skb->data, len);
+		dma_sync_single_for_device(&skge->hw->pdev->dev,
+					   dma_unmap_addr(e, mapaddr),
+					   dma_unmap_len(e, maplen),
+					   DMA_FROM_DEVICE);
+		skge_rx_reuse(e, skge->rx_buf_size);
+	} else {
+		struct skge_element ee;
+		struct sk_buff *nskb;
+
+		nskb = netdev_alloc_skb_ip_align(dev, skge->rx_buf_size);
+		if (!nskb)
+			goto resubmit;
+
+		ee = *e;
+
+		skb = ee.skb;
+		prefetch(skb->data);
+
+		if (skge_rx_setup(skge, e, nskb, skge->rx_buf_size) < 0) {
+			dev_kfree_skb(nskb);
+			goto resubmit;
+		}
+
+		dma_unmap_single(&skge->hw->pdev->dev,
+				 dma_unmap_addr(&ee, mapaddr),
+				 dma_unmap_len(&ee, maplen), DMA_FROM_DEVICE);
+	}
+
+	skb_put(skb, len);
+
+	if (dev->features & NETIF_F_RXCSUM) {
+		skb->csum = le16_to_cpu(csum);
+		skb->ip_summed = CHECKSUM_COMPLETE;
+	}
+
+	skb->protocol = eth_type_trans(skb, dev);
+
+	return skb;
+error:
+
+	netif_printk(skge, rx_err, KERN_DEBUG, skge->netdev,
+		     "rx err, slot %td control 0x%x status 0x%x\n",
+		     e - skge->rx_ring.start, control, status);
+
+	if (is_genesis(skge->hw)) {
+		if (status & (XMR_FS_RUNT|XMR_FS_LNG_ERR))
+			dev->stats.rx_length_errors++;
+		if (status & XMR_FS_FRA_ERR)
+			dev->stats.rx_frame_errors++;
+		if (status & XMR_FS_FCS_ERR)
+			dev->stats.rx_crc_errors++;
+	} else {
+		if (status & (GMR_FS_LONG_ERR|GMR_FS_UN_SIZE))
+			dev->stats.rx_length_errors++;
+		if (status & GMR_FS_FRAGMENT)
+			dev->stats.rx_frame_errors++;
+		if (status & GMR_FS_CRC_ERR)
+			dev->stats.rx_crc_errors++;
+	}
+
+resubmit:
+	skge_rx_reuse(e, skge->rx_buf_size);
+	return NULL;
+}
+
+/* Free all buffers in Tx ring which are no longer owned by device */
+static void skge_tx_done(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_ring *ring = &skge->tx_ring;
+	struct skge_element *e;
+	unsigned int bytes_compl = 0, pkts_compl = 0;
+
+	skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
+
+	for (e = ring->to_clean; e != ring->to_use; e = e->next) {
+		u32 control = ((const struct skge_tx_desc *) e->desc)->control;
+
+		if (control & BMU_OWN)
+			break;
+
+		skge_tx_unmap(skge->hw->pdev, e, control);
+
+		if (control & BMU_EOF) {
+			netif_printk(skge, tx_done, KERN_DEBUG, skge->netdev,
+				     "tx done slot %td\n",
+				     e - skge->tx_ring.start);
+
+			pkts_compl++;
+			bytes_compl += e->skb->len;
+
+			dev_consume_skb_any(e->skb);
+		}
+	}
+	netdev_completed_queue(dev, pkts_compl, bytes_compl);
+	skge->tx_ring.to_clean = e;
+
+	/* Can run lockless until we need to synchronize to restart queue. */
+	smp_mb();
+
+	if (unlikely(netif_queue_stopped(dev) &&
+		     skge_avail(&skge->tx_ring) > TX_LOW_WATER)) {
+		netif_tx_lock(dev);
+		if (unlikely(netif_queue_stopped(dev) &&
+			     skge_avail(&skge->tx_ring) > TX_LOW_WATER)) {
+			netif_wake_queue(dev);
+
+		}
+		netif_tx_unlock(dev);
+	}
+}
+
+static int skge_poll(struct napi_struct *napi, int budget)
+{
+	struct skge_port *skge = container_of(napi, struct skge_port, napi);
+	struct net_device *dev = skge->netdev;
+	struct skge_hw *hw = skge->hw;
+	struct skge_ring *ring = &skge->rx_ring;
+	struct skge_element *e;
+	int work_done = 0;
+
+	skge_tx_done(dev);
+
+	skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
+
+	for (e = ring->to_clean; prefetch(e->next), work_done < budget; e = e->next) {
+		struct skge_rx_desc *rd = e->desc;
+		struct sk_buff *skb;
+		u32 control;
+
+		rmb();
+		control = rd->control;
+		if (control & BMU_OWN)
+			break;
+
+		skb = skge_rx_get(dev, e, control, rd->status, rd->csum2);
+		if (likely(skb)) {
+			napi_gro_receive(napi, skb);
+			++work_done;
+		}
+	}
+	ring->to_clean = e;
+
+	/* restart receiver */
+	wmb();
+	skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_START);
+
+	if (work_done < budget && napi_complete_done(napi, work_done)) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&hw->hw_lock, flags);
+		hw->intr_mask |= napimask[skge->port];
+		skge_write32(hw, B0_IMSK, hw->intr_mask);
+		skge_read32(hw, B0_IMSK);
+		spin_unlock_irqrestore(&hw->hw_lock, flags);
+	}
+
+	return work_done;
+}
+
+/* Parity errors seem to happen when Genesis is connected to a switch
+ * with no other ports present. Heartbeat error??
+ */
+static void skge_mac_parity(struct skge_hw *hw, int port)
+{
+	struct net_device *dev = hw->dev[port];
+
+	++dev->stats.tx_heartbeat_errors;
+
+	if (is_genesis(hw))
+		skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
+			     MFF_CLR_PERR);
+	else
+		/* HW-Bug #8: cleared by GMF_CLI_TX_FC instead of GMF_CLI_TX_PE */
+		skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T),
+			    (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)
+			    ? GMF_CLI_TX_FC : GMF_CLI_TX_PE);
+}
+
+static void skge_mac_intr(struct skge_hw *hw, int port)
+{
+	if (is_genesis(hw))
+		genesis_mac_intr(hw, port);
+	else
+		yukon_mac_intr(hw, port);
+}
+
+/* Handle device specific framing and timeout interrupts */
+static void skge_error_irq(struct skge_hw *hw)
+{
+	struct pci_dev *pdev = hw->pdev;
+	u32 hwstatus = skge_read32(hw, B0_HWE_ISRC);
+
+	if (is_genesis(hw)) {
+		/* clear xmac errors */
+		if (hwstatus & (IS_NO_STAT_M1|IS_NO_TIST_M1))
+			skge_write16(hw, RX_MFF_CTRL1, MFF_CLR_INSTAT);
+		if (hwstatus & (IS_NO_STAT_M2|IS_NO_TIST_M2))
+			skge_write16(hw, RX_MFF_CTRL2, MFF_CLR_INSTAT);
+	} else {
+		/* Timestamp (unused) overflow */
+		if (hwstatus & IS_IRQ_TIST_OV)
+			skge_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
+	}
+
+	if (hwstatus & IS_RAM_RD_PAR) {
+		dev_err(&pdev->dev, "Ram read data parity error\n");
+		skge_write16(hw, B3_RI_CTRL, RI_CLR_RD_PERR);
+	}
+
+	if (hwstatus & IS_RAM_WR_PAR) {
+		dev_err(&pdev->dev, "Ram write data parity error\n");
+		skge_write16(hw, B3_RI_CTRL, RI_CLR_WR_PERR);
+	}
+
+	if (hwstatus & IS_M1_PAR_ERR)
+		skge_mac_parity(hw, 0);
+
+	if (hwstatus & IS_M2_PAR_ERR)
+		skge_mac_parity(hw, 1);
+
+	if (hwstatus & IS_R1_PAR_ERR) {
+		dev_err(&pdev->dev, "%s: receive queue parity error\n",
+			hw->dev[0]->name);
+		skge_write32(hw, B0_R1_CSR, CSR_IRQ_CL_P);
+	}
+
+	if (hwstatus & IS_R2_PAR_ERR) {
+		dev_err(&pdev->dev, "%s: receive queue parity error\n",
+			hw->dev[1]->name);
+		skge_write32(hw, B0_R2_CSR, CSR_IRQ_CL_P);
+	}
+
+	if (hwstatus & (IS_IRQ_MST_ERR|IS_IRQ_STAT)) {
+		u16 pci_status, pci_cmd;
+
+		pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
+		pci_read_config_word(pdev, PCI_STATUS, &pci_status);
+
+		dev_err(&pdev->dev, "PCI error cmd=%#x status=%#x\n",
+			pci_cmd, pci_status);
+
+		/* Write the error bits back to clear them. */
+		pci_status &= PCI_STATUS_ERROR_BITS;
+		skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+		pci_write_config_word(pdev, PCI_COMMAND,
+				      pci_cmd | PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
+		pci_write_config_word(pdev, PCI_STATUS, pci_status);
+		skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+
+		/* if error still set then just ignore it */
+		hwstatus = skge_read32(hw, B0_HWE_ISRC);
+		if (hwstatus & IS_IRQ_STAT) {
+			dev_warn(&hw->pdev->dev, "unable to clear error (so ignoring them)\n");
+			hw->intr_mask &= ~IS_HW_ERR;
+		}
+	}
+}
+
+/*
+ * Interrupt from PHY are handled in tasklet (softirq)
+ * because accessing phy registers requires spin wait which might
+ * cause excess interrupt latency.
+ */
+static void skge_extirq(struct tasklet_struct *t)
+{
+	struct skge_hw *hw = from_tasklet(hw, t, phy_task);
+	int port;
+
+	for (port = 0; port < hw->ports; port++) {
+		struct net_device *dev = hw->dev[port];
+
+		if (netif_running(dev)) {
+			struct skge_port *skge = netdev_priv(dev);
+
+			spin_lock(&hw->phy_lock);
+			if (!is_genesis(hw))
+				yukon_phy_intr(skge);
+			else if (hw->phy_type == SK_PHY_BCOM)
+				bcom_phy_intr(skge);
+			spin_unlock(&hw->phy_lock);
+		}
+	}
+
+	spin_lock_irq(&hw->hw_lock);
+	hw->intr_mask |= IS_EXT_REG;
+	skge_write32(hw, B0_IMSK, hw->intr_mask);
+	skge_read32(hw, B0_IMSK);
+	spin_unlock_irq(&hw->hw_lock);
+}
+
+static irqreturn_t skge_intr(int irq, void *dev_id)
+{
+	struct skge_hw *hw = dev_id;
+	u32 status;
+	int handled = 0;
+
+	spin_lock(&hw->hw_lock);
+	/* Reading this register masks IRQ */
+	status = skge_read32(hw, B0_SP_ISRC);
+	if (status == 0 || status == ~0)
+		goto out;
+
+	handled = 1;
+	status &= hw->intr_mask;
+	if (status & IS_EXT_REG) {
+		hw->intr_mask &= ~IS_EXT_REG;
+		tasklet_schedule(&hw->phy_task);
+	}
+
+	if (status & (IS_XA1_F|IS_R1_F)) {
+		struct skge_port *skge = netdev_priv(hw->dev[0]);
+		hw->intr_mask &= ~(IS_XA1_F|IS_R1_F);
+		napi_schedule(&skge->napi);
+	}
+
+	if (status & IS_PA_TO_TX1)
+		skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX1);
+
+	if (status & IS_PA_TO_RX1) {
+		++hw->dev[0]->stats.rx_over_errors;
+		skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX1);
+	}
+
+
+	if (status & IS_MAC1)
+		skge_mac_intr(hw, 0);
+
+	if (hw->dev[1]) {
+		struct skge_port *skge = netdev_priv(hw->dev[1]);
+
+		if (status & (IS_XA2_F|IS_R2_F)) {
+			hw->intr_mask &= ~(IS_XA2_F|IS_R2_F);
+			napi_schedule(&skge->napi);
+		}
+
+		if (status & IS_PA_TO_RX2) {
+			++hw->dev[1]->stats.rx_over_errors;
+			skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX2);
+		}
+
+		if (status & IS_PA_TO_TX2)
+			skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX2);
+
+		if (status & IS_MAC2)
+			skge_mac_intr(hw, 1);
+	}
+
+	if (status & IS_HW_ERR)
+		skge_error_irq(hw);
+out:
+	skge_write32(hw, B0_IMSK, hw->intr_mask);
+	skge_read32(hw, B0_IMSK);
+	spin_unlock(&hw->hw_lock);
+
+	return IRQ_RETVAL(handled);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void skge_netpoll(struct net_device *dev)
+{
+	struct skge_port *skge = netdev_priv(dev);
+
+	disable_irq(dev->irq);
+	skge_intr(dev->irq, skge->hw);
+	enable_irq(dev->irq);
+}
+#endif
+
+static int skge_set_mac_address(struct net_device *dev, void *p)
+{
+	struct skge_port *skge = netdev_priv(dev);
+	struct skge_hw *hw = skge->hw;
+	unsigned port = skge->port;
+	const struct sockaddr *addr = p;
+	u16 ctrl;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	eth_hw_addr_set(dev, addr->sa_data);
+
+	if (!netif_running(dev)) {
+		memcpy_toio(hw->regs + B2_MAC_1 + port*8, dev->dev_addr, ETH_ALEN);
+		memcpy_toio(hw->regs + B2_MAC_2 + port*8, dev->dev_addr, ETH_ALEN);
+	} else {
+		/* disable Rx */
+		spin_lock_bh(&hw->phy_lock);
+		ctrl = gma_read16(hw, port, GM_GP_CTRL);
+		gma_write16(hw, port, GM_GP_CTRL, ctrl & ~GM_GPCR_RX_ENA);
+
+		memcpy_toio(hw->regs + B2_MAC_1 + port*8, dev->dev_addr, ETH_ALEN);
+		memcpy_toio(hw->regs + B2_MAC_2 + port*8, dev->dev_addr, ETH_ALEN);
+
+		if (is_genesis(hw))
+			xm_outaddr(hw, port, XM_SA, dev->dev_addr);
+		else {
+			gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
+			gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
+		}
+
+		gma_write16(hw, port, GM_GP_CTRL, ctrl);
+		spin_unlock_bh(&hw->phy_lock);
+	}
+
+	return 0;
+}
+
+static const struct {
+	u8 id;
+	const char *name;
+} skge_chips[] = {
+	{ CHIP_ID_GENESIS,	"Genesis" },
+	{ CHIP_ID_YUKON,	 "Yukon" },
+	{ CHIP_ID_YUKON_LITE,	 "Yukon-Lite"},
+	{ CHIP_ID_YUKON_LP,	 "Yukon-LP"},
+};
+
+static const char *skge_board_name(const struct skge_hw *hw)
+{
+	int i;
+	static char buf[16];
+
+	for (i = 0; i < ARRAY_SIZE(skge_chips); i++)
+		if (skge_chips[i].id == hw->chip_id)
+			return skge_chips[i].name;
+
+	snprintf(buf, sizeof(buf), "chipid 0x%x", hw->chip_id);
+	return buf;
+}
+
+
+/*
+ * Setup the board data structure, but don't bring up
+ * the port(s)
+ */
+static int skge_reset(struct skge_hw *hw)
+{
+	u32 reg;
+	u16 ctst, pci_status;
+	u8 t8, mac_cfg, pmd_type;
+	int i;
+
+	ctst = skge_read16(hw, B0_CTST);
+
+	/* do a SW reset */
+	skge_write8(hw, B0_CTST, CS_RST_SET);
+	skge_write8(hw, B0_CTST, CS_RST_CLR);
+
+	/* clear PCI errors, if any */
+	skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+	skge_write8(hw, B2_TST_CTRL2, 0);
+
+	pci_read_config_word(hw->pdev, PCI_STATUS, &pci_status);
+	pci_write_config_word(hw->pdev, PCI_STATUS,
+			      pci_status | PCI_STATUS_ERROR_BITS);
+	skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+	skge_write8(hw, B0_CTST, CS_MRST_CLR);
+
+	/* restore CLK_RUN bits (for Yukon-Lite) */
+	skge_write16(hw, B0_CTST,
+		     ctst & (CS_CLK_RUN_HOT|CS_CLK_RUN_RST|CS_CLK_RUN_ENA));
+
+	hw->chip_id = skge_read8(hw, B2_CHIP_ID);
+	hw->phy_type = skge_read8(hw, B2_E_1) & 0xf;
+	pmd_type = skge_read8(hw, B2_PMD_TYP);
+	hw->copper = (pmd_type == 'T' || pmd_type == '1');
+
+	switch (hw->chip_id) {
+	case CHIP_ID_GENESIS:
+#ifdef CONFIG_SKGE_GENESIS
+		switch (hw->phy_type) {
+		case SK_PHY_XMAC:
+			hw->phy_addr = PHY_ADDR_XMAC;
+			break;
+		case SK_PHY_BCOM:
+			hw->phy_addr = PHY_ADDR_BCOM;
+			break;
+		default:
+			dev_err(&hw->pdev->dev, "unsupported phy type 0x%x\n",
+			       hw->phy_type);
+			return -EOPNOTSUPP;
+		}
+		break;
+#else
+		dev_err(&hw->pdev->dev, "Genesis chip detected but not configured\n");
+		return -EOPNOTSUPP;
+#endif
+
+	case CHIP_ID_YUKON:
+	case CHIP_ID_YUKON_LITE:
+	case CHIP_ID_YUKON_LP:
+		if (hw->phy_type < SK_PHY_MARV_COPPER && pmd_type != 'S')
+			hw->copper = 1;
+
+		hw->phy_addr = PHY_ADDR_MARV;
+		break;
+
+	default:
+		dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
+		       hw->chip_id);
+		return -EOPNOTSUPP;
+	}
+
+	mac_cfg = skge_read8(hw, B2_MAC_CFG);
+	hw->ports = (mac_cfg & CFG_SNG_MAC) ? 1 : 2;
+	hw->chip_rev = (mac_cfg & CFG_CHIP_R_MSK) >> 4;
+
+	/* read the adapters RAM size */
+	t8 = skge_read8(hw, B2_E_0);
+	if (is_genesis(hw)) {
+		if (t8 == 3) {
+			/* special case: 4 x 64k x 36, offset = 0x80000 */
+			hw->ram_size = 0x100000;
+			hw->ram_offset = 0x80000;
+		} else
+			hw->ram_size = t8 * 512;
+	} else if (t8 == 0)
+		hw->ram_size = 0x20000;
+	else
+		hw->ram_size = t8 * 4096;
+
+	hw->intr_mask = IS_HW_ERR;
+
+	/* Use PHY IRQ for all but fiber based Genesis board */
+	if (!(is_genesis(hw) && hw->phy_type == SK_PHY_XMAC))
+		hw->intr_mask |= IS_EXT_REG;
+
+	if (is_genesis(hw))
+		genesis_init(hw);
+	else {
+		/* switch power to VCC (WA for VAUX problem) */
+		skge_write8(hw, B0_POWER_CTRL,
+			    PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
+
+		/* avoid boards with stuck Hardware error bits */
+		if ((skge_read32(hw, B0_ISRC) & IS_HW_ERR) &&
+		    (skge_read32(hw, B0_HWE_ISRC) & IS_IRQ_SENSOR)) {
+			dev_warn(&hw->pdev->dev, "stuck hardware sensor bit\n");
+			hw->intr_mask &= ~IS_HW_ERR;
+		}
+
+		/* Clear PHY COMA */
+		skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+		pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg);
+		reg &= ~PCI_PHY_COMA;
+		pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg);
+		skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+
+
+		for (i = 0; i < hw->ports; i++) {
+			skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
+			skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
+		}
+	}
+
+	/* turn off hardware timer (unused) */
+	skge_write8(hw, B2_TI_CTRL, TIM_STOP);
+	skge_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
+	skge_write8(hw, B0_LED, LED_STAT_ON);
+
+	/* enable the Tx Arbiters */
+	for (i = 0; i < hw->ports; i++)
+		skge_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
+
+	/* Initialize ram interface */
+	skge_write16(hw, B3_RI_CTRL, RI_RST_CLR);
+
+	skge_write8(hw, B3_RI_WTO_R1, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_WTO_XA1, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_WTO_XS1, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_RTO_R1, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_RTO_XA1, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_RTO_XS1, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_WTO_R2, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_WTO_XA2, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_WTO_XS2, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_RTO_R2, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_RTO_XA2, SK_RI_TO_53);
+	skge_write8(hw, B3_RI_RTO_XS2, SK_RI_TO_53);
+
+	skge_write32(hw, B0_HWE_IMSK, IS_ERR_MSK);
+
+	/* Set interrupt moderation for Transmit only
+	 * Receive interrupts avoided by NAPI
+	 */
+	skge_write32(hw, B2_IRQM_MSK, IS_XA1_F|IS_XA2_F);
+	skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, 100));
+	skge_write32(hw, B2_IRQM_CTRL, TIM_START);
+
+	/* Leave irq disabled until first port is brought up. */
+	skge_write32(hw, B0_IMSK, 0);
+
+	for (i = 0; i < hw->ports; i++) {
+		if (is_genesis(hw))
+			genesis_reset(hw, i);
+		else
+			yukon_reset(hw, i);
+	}
+
+	return 0;
+}
+
+
+#ifdef CONFIG_SKGE_DEBUG
+
+static struct dentry *skge_debug;
+
+static int skge_debug_show(struct seq_file *seq, void *v)
+{
+	struct net_device *dev = seq->private;
+	const struct skge_port *skge = netdev_priv(dev);
+	const struct skge_hw *hw = skge->hw;
+	const struct skge_element *e;
+
+	if (!netif_running(dev))
+		return -ENETDOWN;
+
+	seq_printf(seq, "IRQ src=%x mask=%x\n", skge_read32(hw, B0_ISRC),
+		   skge_read32(hw, B0_IMSK));
+
+	seq_printf(seq, "Tx Ring: (%d)\n", skge_avail(&skge->tx_ring));
+	for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
+		const struct skge_tx_desc *t = e->desc;
+		seq_printf(seq, "%#x dma=%#x%08x %#x csum=%#x/%x/%x\n",
+			   t->control, t->dma_hi, t->dma_lo, t->status,
+			   t->csum_offs, t->csum_write, t->csum_start);
+	}
+
+	seq_puts(seq, "\nRx Ring:\n");
+	for (e = skge->rx_ring.to_clean; ; e = e->next) {
+		const struct skge_rx_desc *r = e->desc;
+
+		if (r->control & BMU_OWN)
+			break;
+
+		seq_printf(seq, "%#x dma=%#x%08x %#x %#x csum=%#x/%x\n",
+			   r->control, r->dma_hi, r->dma_lo, r->status,
+			   r->timestamp, r->csum1, r->csum1_start);
+	}
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(skge_debug);
+
+/*
+ * Use network device events to create/remove/rename
+ * debugfs file entries
+ */
+static int skge_device_event(struct notifier_block *unused,
+			     unsigned long event, void *ptr)
+{
+	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+	struct skge_port *skge;
+
+	if (dev->netdev_ops->ndo_open != &skge_up || !skge_debug)
+		goto done;
+
+	skge = netdev_priv(dev);
+	switch (event) {
+	case NETDEV_CHANGENAME:
+		if (skge->debugfs)
+			skge->debugfs = debugfs_rename(skge_debug,
+						       skge->debugfs,
+						       skge_debug, dev->name);
+		break;
+
+	case NETDEV_GOING_DOWN:
+		debugfs_remove(skge->debugfs);
+		skge->debugfs = NULL;
+		break;
+
+	case NETDEV_UP:
+		skge->debugfs = debugfs_create_file(dev->name, 0444, skge_debug,
+						    dev, &skge_debug_fops);
+		break;
+	}
+
+done:
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block skge_notifier = {
+	.notifier_call = skge_device_event,
+};
+
+
+static __init void skge_debug_init(void)
+{
+	skge_debug = debugfs_create_dir("skge", NULL);
+
+	register_netdevice_notifier(&skge_notifier);
+}
+
+static __exit void skge_debug_cleanup(void)
+{
+	if (skge_debug) {
+		unregister_netdevice_notifier(&skge_notifier);
+		debugfs_remove(skge_debug);
+		skge_debug = NULL;
+	}
+}
+
+#else
+#define skge_debug_init()
+#define skge_debug_cleanup()
+#endif
+
+static const struct net_device_ops skge_netdev_ops = {
+	.ndo_open		= skge_up,
+	.ndo_stop		= skge_down,
+	.ndo_start_xmit		= skge_xmit_frame,
+	.ndo_eth_ioctl		= skge_ioctl,
+	.ndo_get_stats		= skge_get_stats,
+	.ndo_tx_timeout		= skge_tx_timeout,
+	.ndo_change_mtu		= skge_change_mtu,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_rx_mode	= skge_set_multicast,
+	.ndo_set_mac_address	= skge_set_mac_address,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= skge_netpoll,
+#endif
+};
+
+
+/* Initialize network device */
+static struct net_device *skge_devinit(struct skge_hw *hw, int port,
+				       int highmem)
+{
+	struct skge_port *skge;
+	struct net_device *dev = alloc_etherdev(sizeof(*skge));
+	u8 addr[ETH_ALEN];
+
+	if (!dev)
+		return NULL;
+
+	SET_NETDEV_DEV(dev, &hw->pdev->dev);
+	dev->netdev_ops = &skge_netdev_ops;
+	dev->ethtool_ops = &skge_ethtool_ops;
+	dev->watchdog_timeo = TX_WATCHDOG;
+	dev->irq = hw->pdev->irq;
+
+	/* MTU range: 60 - 9000 */
+	dev->min_mtu = ETH_ZLEN;
+	dev->max_mtu = ETH_JUMBO_MTU;
+
+	if (highmem)
+		dev->features |= NETIF_F_HIGHDMA;
+
+	skge = netdev_priv(dev);
+	netif_napi_add(dev, &skge->napi, skge_poll);
+	skge->netdev = dev;
+	skge->hw = hw;
+	skge->msg_enable = netif_msg_init(debug, default_msg);
+
+	skge->tx_ring.count = DEFAULT_TX_RING_SIZE;
+	skge->rx_ring.count = DEFAULT_RX_RING_SIZE;
+
+	/* Auto speed and flow control */
+	skge->autoneg = AUTONEG_ENABLE;
+	skge->flow_control = FLOW_MODE_SYM_OR_REM;
+	skge->duplex = -1;
+	skge->speed = -1;
+	skge->advertising = skge_supported_modes(hw);
+
+	if (device_can_wakeup(&hw->pdev->dev)) {
+		skge->wol = wol_supported(hw) & WAKE_MAGIC;
+		device_set_wakeup_enable(&hw->pdev->dev, skge->wol);
+	}
+
+	hw->dev[port] = dev;
+
+	skge->port = port;
+
+	/* Only used for Genesis XMAC */
+	if (is_genesis(hw))
+		timer_setup(&skge->link_timer, xm_link_timer, 0);
+	else {
+		dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG |
+		                   NETIF_F_RXCSUM;
+		dev->features |= dev->hw_features;
+	}
+
+	/* read the mac address */
+	memcpy_fromio(addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN);
+	eth_hw_addr_set(dev, addr);
+
+	return dev;
+}
+
+static void skge_show_addr(struct net_device *dev)
+{
+	const struct skge_port *skge = netdev_priv(dev);
+
+	netif_info(skge, probe, skge->netdev, "addr %pM\n", dev->dev_addr);
+}
+
+static int only_32bit_dma;
+
+static int skge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct net_device *dev, *dev1;
+	struct skge_hw *hw;
+	int err, using_dac = 0;
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "cannot enable PCI device\n");
+		goto err_out;
+	}
+
+	err = pci_request_regions(pdev, DRV_NAME);
+	if (err) {
+		dev_err(&pdev->dev, "cannot obtain PCI resources\n");
+		goto err_out_disable_pdev;
+	}
+
+	pci_set_master(pdev);
+
+	if (!only_32bit_dma && !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
+		using_dac = 1;
+		err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
+	} else if (!(err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)))) {
+		using_dac = 0;
+		err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+	}
+
+	if (err) {
+		dev_err(&pdev->dev, "no usable DMA configuration\n");
+		goto err_out_free_regions;
+	}
+
+#ifdef __BIG_ENDIAN
+	/* byte swap descriptors in hardware */
+	{
+		u32 reg;
+
+		pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
+		reg |= PCI_REV_DESC;
+		pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
+	}
+#endif
+
+	err = -ENOMEM;
+	/* space for skge@pci:0000:04:00.0 */
+	hw = kzalloc(sizeof(*hw) + strlen(DRV_NAME "@pci:")
+		     + strlen(pci_name(pdev)) + 1, GFP_KERNEL);
+	if (!hw)
+		goto err_out_free_regions;
+
+	sprintf(hw->irq_name, DRV_NAME "@pci:%s", pci_name(pdev));
+
+	hw->pdev = pdev;
+	spin_lock_init(&hw->hw_lock);
+	spin_lock_init(&hw->phy_lock);
+	tasklet_setup(&hw->phy_task, skge_extirq);
+
+	hw->regs = ioremap(pci_resource_start(pdev, 0), 0x4000);
+	if (!hw->regs) {
+		dev_err(&pdev->dev, "cannot map device registers\n");
+		goto err_out_free_hw;
+	}
+
+	err = skge_reset(hw);
+	if (err)
+		goto err_out_iounmap;
+
+	pr_info("%s addr 0x%llx irq %d chip %s rev %d\n",
+		DRV_VERSION,
+		(unsigned long long)pci_resource_start(pdev, 0), pdev->irq,
+		skge_board_name(hw), hw->chip_rev);
+
+	dev = skge_devinit(hw, 0, using_dac);
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_out_led_off;
+	}
+
+	/* Some motherboards are broken and has zero in ROM. */
+	if (!is_valid_ether_addr(dev->dev_addr))
+		dev_warn(&pdev->dev, "bad (zero?) ethernet address in rom\n");
+
+	err = register_netdev(dev);
+	if (err) {
+		dev_err(&pdev->dev, "cannot register net device\n");
+		goto err_out_free_netdev;
+	}
+
+	skge_show_addr(dev);
+
+	if (hw->ports > 1) {
+		dev1 = skge_devinit(hw, 1, using_dac);
+		if (!dev1) {
+			err = -ENOMEM;
+			goto err_out_unregister;
+		}
+
+		err = register_netdev(dev1);
+		if (err) {
+			dev_err(&pdev->dev, "cannot register second net device\n");
+			goto err_out_free_dev1;
+		}
+
+		err = request_irq(pdev->irq, skge_intr, IRQF_SHARED,
+				  hw->irq_name, hw);
+		if (err) {
+			dev_err(&pdev->dev, "cannot assign irq %d\n",
+				pdev->irq);
+			goto err_out_unregister_dev1;
+		}
+
+		skge_show_addr(dev1);
+	}
+	pci_set_drvdata(pdev, hw);
+
+	return 0;
+
+err_out_unregister_dev1:
+	unregister_netdev(dev1);
+err_out_free_dev1:
+	free_netdev(dev1);
+err_out_unregister:
+	unregister_netdev(dev);
+err_out_free_netdev:
+	free_netdev(dev);
+err_out_led_off:
+	skge_write16(hw, B0_LED, LED_STAT_OFF);
+err_out_iounmap:
+	iounmap(hw->regs);
+err_out_free_hw:
+	kfree(hw);
+err_out_free_regions:
+	pci_release_regions(pdev);
+err_out_disable_pdev:
+	pci_disable_device(pdev);
+err_out:
+	return err;
+}
+
+static void skge_remove(struct pci_dev *pdev)
+{
+	struct skge_hw *hw  = pci_get_drvdata(pdev);
+	struct net_device *dev0, *dev1;
+
+	if (!hw)
+		return;
+
+	dev1 = hw->dev[1];
+	if (dev1)
+		unregister_netdev(dev1);
+	dev0 = hw->dev[0];
+	unregister_netdev(dev0);
+
+	tasklet_kill(&hw->phy_task);
+
+	spin_lock_irq(&hw->hw_lock);
+	hw->intr_mask = 0;
+
+	if (hw->ports > 1) {
+		skge_write32(hw, B0_IMSK, 0);
+		skge_read32(hw, B0_IMSK);
+	}
+	spin_unlock_irq(&hw->hw_lock);
+
+	skge_write16(hw, B0_LED, LED_STAT_OFF);
+	skge_write8(hw, B0_CTST, CS_RST_SET);
+
+	if (hw->ports > 1)
+		free_irq(pdev->irq, hw);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	if (dev1)
+		free_netdev(dev1);
+	free_netdev(dev0);
+
+	iounmap(hw->regs);
+	kfree(hw);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int skge_suspend(struct device *dev)
+{
+	struct skge_hw *hw  = dev_get_drvdata(dev);
+	int i;
+
+	if (!hw)
+		return 0;
+
+	for (i = 0; i < hw->ports; i++) {
+		struct net_device *dev = hw->dev[i];
+		struct skge_port *skge = netdev_priv(dev);
+
+		if (netif_running(dev))
+			skge_down(dev);
+
+		if (skge->wol)
+			skge_wol_init(skge);
+	}
+
+	skge_write32(hw, B0_IMSK, 0);
+
+	return 0;
+}
+
+static int skge_resume(struct device *dev)
+{
+	struct skge_hw *hw  = dev_get_drvdata(dev);
+	int i, err;
+
+	if (!hw)
+		return 0;
+
+	err = skge_reset(hw);
+	if (err)
+		goto out;
+
+	for (i = 0; i < hw->ports; i++) {
+		struct net_device *dev = hw->dev[i];
+
+		if (netif_running(dev)) {
+			err = skge_up(dev);
+
+			if (err) {
+				netdev_err(dev, "could not up: %d\n", err);
+				dev_close(dev);
+				goto out;
+			}
+		}
+	}
+out:
+	return err;
+}
+
+static SIMPLE_DEV_PM_OPS(skge_pm_ops, skge_suspend, skge_resume);
+#define SKGE_PM_OPS (&skge_pm_ops)
+
+#else
+
+#define SKGE_PM_OPS NULL
+#endif /* CONFIG_PM_SLEEP */
+
+static void skge_shutdown(struct pci_dev *pdev)
+{
+	struct skge_hw *hw  = pci_get_drvdata(pdev);
+	int i;
+
+	if (!hw)
+		return;
+
+	for (i = 0; i < hw->ports; i++) {
+		struct net_device *dev = hw->dev[i];
+		struct skge_port *skge = netdev_priv(dev);
+
+		if (skge->wol)
+			skge_wol_init(skge);
+	}
+
+	pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev));
+	pci_set_power_state(pdev, PCI_D3hot);
+}
+
+static struct pci_driver skge_driver = {
+	.name =         DRV_NAME,
+	.id_table =     skge_id_table,
+	.probe =        skge_probe,
+	.remove =       skge_remove,
+	.shutdown =	skge_shutdown,
+	.driver.pm =	SKGE_PM_OPS,
+};
+
+static const struct dmi_system_id skge_32bit_dma_boards[] = {
+	{
+		.ident = "Gigabyte nForce boards",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co"),
+			DMI_MATCH(DMI_BOARD_NAME, "nForce"),
+		},
+	},
+	{
+		.ident = "ASUS P5NSLI",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
+			DMI_MATCH(DMI_BOARD_NAME, "P5NSLI")
+		},
+	},
+	{
+		.ident = "FUJITSU SIEMENS A8NE-FM",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTek Computer INC."),
+			DMI_MATCH(DMI_BOARD_NAME, "A8NE-FM")
+		},
+	},
+	{}
+};
+
+static int __init skge_init_module(void)
+{
+	if (dmi_check_system(skge_32bit_dma_boards))
+		only_32bit_dma = 1;
+	skge_debug_init();
+	return pci_register_driver(&skge_driver);
+}
+
+static void __exit skge_cleanup_module(void)
+{
+	pci_unregister_driver(&skge_driver);
+	skge_debug_cleanup();
+}
+
+module_init(skge_init_module);
+module_exit(skge_cleanup_module);