drivers/net/chelsio/vsc8244.c - kernel/msm-4.9 - Gitiles

 /*
  * This file is part of the Chelsio T2 Ethernet driver.
  *
  * Copyright (C) 2005 Chelsio Communications.  All rights reserved.
  *
  * This program is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the LICENSE file included in this
  * release for licensing terms and conditions.
  */

 #include "common.h"
 #include "cphy.h"
 #include "elmer0.h"

 #ifndef ADVERTISE_PAUSE_CAP
 # define ADVERTISE_PAUSE_CAP 0x400
 #endif
 #ifndef ADVERTISE_PAUSE_ASYM
 # define ADVERTISE_PAUSE_ASYM 0x800
 #endif

 /* Gigabit MII registers */
 #ifndef MII_CTRL1000
 # define MII_CTRL1000 9
 #endif

 #ifndef ADVERTISE_1000FULL
 # define ADVERTISE_1000FULL 0x200
 # define ADVERTISE_1000HALF 0x100
 #endif

 /* VSC8244 PHY specific registers. */
 enum {
 	VSC8244_INTR_ENABLE   = 25,
 	VSC8244_INTR_STATUS   = 26,
 	VSC8244_AUX_CTRL_STAT = 28,
 };

 enum {
 	VSC_INTR_RX_ERR     = 1 << 0,
 	VSC_INTR_MS_ERR     = 1 << 1,  /* master/slave resolution error */
 	VSC_INTR_CABLE      = 1 << 2,  /* cable impairment */
 	VSC_INTR_FALSE_CARR = 1 << 3,  /* false carrier */
 	VSC_INTR_MEDIA_CHG  = 1 << 4,  /* AMS media change */
 	VSC_INTR_RX_FIFO    = 1 << 5,  /* Rx FIFO over/underflow */
 	VSC_INTR_TX_FIFO    = 1 << 6,  /* Tx FIFO over/underflow */
 	VSC_INTR_DESCRAMBL  = 1 << 7,  /* descrambler lock-lost */
 	VSC_INTR_SYMBOL_ERR = 1 << 8,  /* symbol error */
 	VSC_INTR_NEG_DONE   = 1 << 10, /* autoneg done */
 	VSC_INTR_NEG_ERR    = 1 << 11, /* autoneg error */
 	VSC_INTR_LINK_CHG   = 1 << 13, /* link change */
 	VSC_INTR_ENABLE     = 1 << 15, /* interrupt enable */
 };

 #define CFG_CHG_INTR_MASK (VSC_INTR_LINK_CHG | VSC_INTR_NEG_ERR | \
 	 		   VSC_INTR_NEG_DONE)
 #define INTR_MASK (CFG_CHG_INTR_MASK | VSC_INTR_TX_FIFO | VSC_INTR_RX_FIFO | \
 		   VSC_INTR_ENABLE)

 /* PHY specific auxiliary control & status register fields */
 #define S_ACSR_ACTIPHY_TMR    0
 #define M_ACSR_ACTIPHY_TMR    0x3
 #define V_ACSR_ACTIPHY_TMR(x) ((x) << S_ACSR_ACTIPHY_TMR)

 #define S_ACSR_SPEED    3
 #define M_ACSR_SPEED    0x3
 #define G_ACSR_SPEED(x) (((x) >> S_ACSR_SPEED) & M_ACSR_SPEED)

 #define S_ACSR_DUPLEX 5
 #define F_ACSR_DUPLEX (1 << S_ACSR_DUPLEX)

 #define S_ACSR_ACTIPHY 6
 #define F_ACSR_ACTIPHY (1 << S_ACSR_ACTIPHY)

 /*
  * Reset the PHY.  This PHY completes reset immediately so we never wait.
  */
 static int vsc8244_reset(struct cphy *cphy, int wait)
 {
 	int err;
 	unsigned int ctl;

 	err = simple_mdio_read(cphy, MII_BMCR, &ctl);
 	if (err)
 		return err;

 	ctl &= ~BMCR_PDOWN;
 	ctl |= BMCR_RESET;
 	return simple_mdio_write(cphy, MII_BMCR, ctl);
 }

 static int vsc8244_intr_enable(struct cphy *cphy)
 {
 	simple_mdio_write(cphy, VSC8244_INTR_ENABLE, INTR_MASK);

     /* Enable interrupts through Elmer */
 	if (t1_is_asic(cphy->adapter)) {
 		u32 elmer;

 		t1_tpi_read(cphy->adapter, A_ELMER0_INT_ENABLE, &elmer);
 		elmer |= ELMER0_GP_BIT1;
 		if (is_T2(cphy->adapter)) {
 		    elmer |= ELMER0_GP_BIT2|ELMER0_GP_BIT3|ELMER0_GP_BIT4;
                 }
 		t1_tpi_write(cphy->adapter, A_ELMER0_INT_ENABLE, elmer);
 	}

     return 0;
 }

 static int vsc8244_intr_disable(struct cphy *cphy)
 {
 	simple_mdio_write(cphy, VSC8244_INTR_ENABLE, 0);

 	if (t1_is_asic(cphy->adapter)) {
 		u32 elmer;

 		t1_tpi_read(cphy->adapter, A_ELMER0_INT_ENABLE, &elmer);
 		elmer &= ~ELMER0_GP_BIT1;
 		if (is_T2(cphy->adapter)) {
 		    elmer &= ~(ELMER0_GP_BIT2|ELMER0_GP_BIT3|ELMER0_GP_BIT4);
                 }
 		t1_tpi_write(cphy->adapter, A_ELMER0_INT_ENABLE, elmer);
 	}

     return 0;
 }

 static int vsc8244_intr_clear(struct cphy *cphy)
 {
 	u32 val;
     u32 elmer;

 	/* Clear PHY interrupts by reading the register. */
 	simple_mdio_read(cphy, VSC8244_INTR_ENABLE, &val);

 	if (t1_is_asic(cphy->adapter)) {
 		t1_tpi_read(cphy->adapter, A_ELMER0_INT_CAUSE, &elmer);
 		elmer |= ELMER0_GP_BIT1;
 		if (is_T2(cphy->adapter)) {
 		    elmer |= ELMER0_GP_BIT2|ELMER0_GP_BIT3|ELMER0_GP_BIT4;
                 }
 		t1_tpi_write(cphy->adapter, A_ELMER0_INT_CAUSE, elmer);
 	}

     return 0;
 }

 /*
  * Force the PHY speed and duplex.  This also disables auto-negotiation, except
  * for 1Gb/s, where auto-negotiation is mandatory.
  */
 static int vsc8244_set_speed_duplex(struct cphy *phy, int speed, int duplex)
 {
 	int err;
 	unsigned int ctl;

 	err = simple_mdio_read(phy, MII_BMCR, &ctl);
 	if (err)
 		return err;

 	if (speed >= 0) {
 		ctl &= ~(BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_ANENABLE);
 		if (speed == SPEED_100)
 			ctl |= BMCR_SPEED100;
 		else if (speed == SPEED_1000)
 			ctl |= BMCR_SPEED1000;
 	}
 	if (duplex >= 0) {
 		ctl &= ~(BMCR_FULLDPLX | BMCR_ANENABLE);
 		if (duplex == DUPLEX_FULL)
 			ctl |= BMCR_FULLDPLX;
 	}
 	if (ctl & BMCR_SPEED1000)  /* auto-negotiation required for 1Gb/s */
 		ctl |= BMCR_ANENABLE;
 	return simple_mdio_write(phy, MII_BMCR, ctl);
 }

 int t1_mdio_set_bits(struct cphy *phy, int mmd, int reg, unsigned int bits)
 {
     int ret;
     unsigned int val;

     ret = mdio_read(phy, mmd, reg, &val);
     if (!ret)
         ret = mdio_write(phy, mmd, reg, val | bits);
     return ret;
 }

 static int vsc8244_autoneg_enable(struct cphy *cphy)
 {
 	return t1_mdio_set_bits(cphy, 0, MII_BMCR,
 				BMCR_ANENABLE | BMCR_ANRESTART);
 }

 static int vsc8244_autoneg_restart(struct cphy *cphy)
 {
 	return t1_mdio_set_bits(cphy, 0, MII_BMCR, BMCR_ANRESTART);
 }

 static int vsc8244_advertise(struct cphy *phy, unsigned int advertise_map)
 {
 	int err;
 	unsigned int val = 0;

 	err = simple_mdio_read(phy, MII_CTRL1000, &val);
 	if (err)
 		return err;

 	val &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
 	if (advertise_map & ADVERTISED_1000baseT_Half)
 		val |= ADVERTISE_1000HALF;
 	if (advertise_map & ADVERTISED_1000baseT_Full)
 		val |= ADVERTISE_1000FULL;

 	err = simple_mdio_write(phy, MII_CTRL1000, val);
 	if (err)
 		return err;

 	val = 1;
 	if (advertise_map & ADVERTISED_10baseT_Half)
 		val |= ADVERTISE_10HALF;
 	if (advertise_map & ADVERTISED_10baseT_Full)
 		val |= ADVERTISE_10FULL;
 	if (advertise_map & ADVERTISED_100baseT_Half)
 		val |= ADVERTISE_100HALF;
 	if (advertise_map & ADVERTISED_100baseT_Full)
 		val |= ADVERTISE_100FULL;
 	if (advertise_map & ADVERTISED_PAUSE)
 		val |= ADVERTISE_PAUSE_CAP;
 	if (advertise_map & ADVERTISED_ASYM_PAUSE)
 		val |= ADVERTISE_PAUSE_ASYM;
 	return simple_mdio_write(phy, MII_ADVERTISE, val);
 }

 static int vsc8244_get_link_status(struct cphy *cphy, int *link_ok,
 				     int *speed, int *duplex, int *fc)
 {
 	unsigned int bmcr, status, lpa, adv;
 	int err, sp = -1, dplx = -1, pause = 0;

 	err = simple_mdio_read(cphy, MII_BMCR, &bmcr);
 	if (!err)
 		err = simple_mdio_read(cphy, MII_BMSR, &status);
 	if (err)
 		return err;

 	if (link_ok) {
 		/*
 		 * BMSR_LSTATUS is latch-low, so if it is 0 we need to read it
 		 * once more to get the current link state.
 		 */
 		if (!(status & BMSR_LSTATUS))
 			err = simple_mdio_read(cphy, MII_BMSR, &status);
 		if (err)
 			return err;
 		*link_ok = (status & BMSR_LSTATUS) != 0;
 	}
 	if (!(bmcr & BMCR_ANENABLE)) {
 		dplx = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
 		if (bmcr & BMCR_SPEED1000)
 			sp = SPEED_1000;
 		else if (bmcr & BMCR_SPEED100)
 			sp = SPEED_100;
 		else
 			sp = SPEED_10;
 	} else if (status & BMSR_ANEGCOMPLETE) {
 		err = simple_mdio_read(cphy, VSC8244_AUX_CTRL_STAT, &status);
 		if (err)
 			return err;

 		dplx = (status & F_ACSR_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
 		sp = G_ACSR_SPEED(status);
 		if (sp == 0)
 			sp = SPEED_10;
 		else if (sp == 1)
 			sp = SPEED_100;
 		else
 			sp = SPEED_1000;

 		if (fc && dplx == DUPLEX_FULL) {
 			err = simple_mdio_read(cphy, MII_LPA, &lpa);
 			if (!err)
 				err = simple_mdio_read(cphy, MII_ADVERTISE,
 						       &adv);
 			if (err)
 				return err;

 			if (lpa & adv & ADVERTISE_PAUSE_CAP)
 				pause = PAUSE_RX | PAUSE_TX;
 			else if ((lpa & ADVERTISE_PAUSE_CAP) &&
 				 (lpa & ADVERTISE_PAUSE_ASYM) &&
 				 (adv & ADVERTISE_PAUSE_ASYM))
 				pause = PAUSE_TX;
 			else if ((lpa & ADVERTISE_PAUSE_ASYM) &&
 				 (adv & ADVERTISE_PAUSE_CAP))
 				pause = PAUSE_RX;
 		}
 	}
 	if (speed)
 		*speed = sp;
 	if (duplex)
 		*duplex = dplx;
 	if (fc)
 		*fc = pause;
 	return 0;
 }

 static int vsc8244_intr_handler(struct cphy *cphy)
 {
 	unsigned int cause;
 	int err, cphy_cause = 0;

 	err = simple_mdio_read(cphy, VSC8244_INTR_STATUS, &cause);
 	if (err)
 		return err;

 	cause &= INTR_MASK;
 	if (cause & CFG_CHG_INTR_MASK)
 		cphy_cause |= cphy_cause_link_change;
 	if (cause & (VSC_INTR_RX_FIFO | VSC_INTR_TX_FIFO))
 		cphy_cause |= cphy_cause_fifo_error;
 	return cphy_cause;
 }

 static void vsc8244_destroy(struct cphy *cphy)
 {
 	kfree(cphy);
 }

 static struct cphy_ops vsc8244_ops = {
 	.destroy              = vsc8244_destroy,
 	.reset                = vsc8244_reset,
 	.interrupt_enable     = vsc8244_intr_enable,
 	.interrupt_disable    = vsc8244_intr_disable,
 	.interrupt_clear      = vsc8244_intr_clear,
 	.interrupt_handler    = vsc8244_intr_handler,
 	.autoneg_enable       = vsc8244_autoneg_enable,
 	.autoneg_restart      = vsc8244_autoneg_restart,
 	.advertise            = vsc8244_advertise,
 	.set_speed_duplex     = vsc8244_set_speed_duplex,
 	.get_link_status      = vsc8244_get_link_status
 };

 static struct cphy* vsc8244_phy_create(adapter_t *adapter, int phy_addr, struct mdio_ops *mdio_ops)
 {
 	struct cphy *cphy = kzalloc(sizeof(*cphy), GFP_KERNEL);

 	if (!cphy)
 		return NULL;

 	cphy_init(cphy, adapter, phy_addr, &vsc8244_ops, mdio_ops);

 	return cphy;
 }


 static int vsc8244_phy_reset(adapter_t* adapter)
 {
 	return 0;
 }

 struct gphy t1_vsc8244_ops = {
 	vsc8244_phy_create,
 	vsc8244_phy_reset
 };
	/*
	* This file is part of the Chelsio T2 Ethernet driver.
	*
	* Copyright (C) 2005 Chelsio Communications. All rights reserved.
	*
	* This program is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the LICENSE file included in this
	* release for licensing terms and conditions.
	*/

	#include "common.h"
	#include "cphy.h"
	#include "elmer0.h"

	#ifndef ADVERTISE_PAUSE_CAP
	# define ADVERTISE_PAUSE_CAP 0x400
	#endif
	#ifndef ADVERTISE_PAUSE_ASYM
	# define ADVERTISE_PAUSE_ASYM 0x800
	#endif

	/* Gigabit MII registers */
	#ifndef MII_CTRL1000
	# define MII_CTRL1000 9
	#endif

	#ifndef ADVERTISE_1000FULL
	# define ADVERTISE_1000FULL 0x200
	# define ADVERTISE_1000HALF 0x100
	#endif

	/* VSC8244 PHY specific registers. */
	enum {
	VSC8244_INTR_ENABLE = 25,
	VSC8244_INTR_STATUS = 26,
	VSC8244_AUX_CTRL_STAT = 28,
	};

	enum {
	VSC_INTR_RX_ERR = 1 << 0,
	VSC_INTR_MS_ERR = 1 << 1, /* master/slave resolution error */
	VSC_INTR_CABLE = 1 << 2, /* cable impairment */
	VSC_INTR_FALSE_CARR = 1 << 3, /* false carrier */
	VSC_INTR_MEDIA_CHG = 1 << 4, /* AMS media change */
	VSC_INTR_RX_FIFO = 1 << 5, /* Rx FIFO over/underflow */
	VSC_INTR_TX_FIFO = 1 << 6, /* Tx FIFO over/underflow */
	VSC_INTR_DESCRAMBL = 1 << 7, /* descrambler lock-lost */
	VSC_INTR_SYMBOL_ERR = 1 << 8, /* symbol error */
	VSC_INTR_NEG_DONE = 1 << 10, /* autoneg done */
	VSC_INTR_NEG_ERR = 1 << 11, /* autoneg error */
	VSC_INTR_LINK_CHG = 1 << 13, /* link change */
	VSC_INTR_ENABLE = 1 << 15, /* interrupt enable */
	};

	#define CFG_CHG_INTR_MASK (VSC_INTR_LINK_CHG \| VSC_INTR_NEG_ERR \| \
	VSC_INTR_NEG_DONE)
	#define INTR_MASK (CFG_CHG_INTR_MASK \| VSC_INTR_TX_FIFO \| VSC_INTR_RX_FIFO \| \
	VSC_INTR_ENABLE)

	/* PHY specific auxiliary control & status register fields */
	#define S_ACSR_ACTIPHY_TMR 0
	#define M_ACSR_ACTIPHY_TMR 0x3
	#define V_ACSR_ACTIPHY_TMR(x) ((x) << S_ACSR_ACTIPHY_TMR)

	#define S_ACSR_SPEED 3
	#define M_ACSR_SPEED 0x3
	#define G_ACSR_SPEED(x) (((x) >> S_ACSR_SPEED) & M_ACSR_SPEED)

	#define S_ACSR_DUPLEX 5
	#define F_ACSR_DUPLEX (1 << S_ACSR_DUPLEX)

	#define S_ACSR_ACTIPHY 6
	#define F_ACSR_ACTIPHY (1 << S_ACSR_ACTIPHY)

	/*
	* Reset the PHY. This PHY completes reset immediately so we never wait.
	*/
	static int vsc8244_reset(struct cphy *cphy, int wait)
	{
	int err;
	unsigned int ctl;

	err = simple_mdio_read(cphy, MII_BMCR, &ctl);
	if (err)
	return err;

	ctl &= ~BMCR_PDOWN;
	ctl \|= BMCR_RESET;
	return simple_mdio_write(cphy, MII_BMCR, ctl);
	}

	static int vsc8244_intr_enable(struct cphy *cphy)
	{
	simple_mdio_write(cphy, VSC8244_INTR_ENABLE, INTR_MASK);

	/* Enable interrupts through Elmer */
	if (t1_is_asic(cphy->adapter)) {
	u32 elmer;

	t1_tpi_read(cphy->adapter, A_ELMER0_INT_ENABLE, &elmer);
	elmer \|= ELMER0_GP_BIT1;
	if (is_T2(cphy->adapter)) {
	elmer \|= ELMER0_GP_BIT2\|ELMER0_GP_BIT3\|ELMER0_GP_BIT4;
	}
	t1_tpi_write(cphy->adapter, A_ELMER0_INT_ENABLE, elmer);
	}

	return 0;
	}

	static int vsc8244_intr_disable(struct cphy *cphy)
	{
	simple_mdio_write(cphy, VSC8244_INTR_ENABLE, 0);

	if (t1_is_asic(cphy->adapter)) {
	u32 elmer;

	t1_tpi_read(cphy->adapter, A_ELMER0_INT_ENABLE, &elmer);
	elmer &= ~ELMER0_GP_BIT1;
	if (is_T2(cphy->adapter)) {
	elmer &= ~(ELMER0_GP_BIT2\|ELMER0_GP_BIT3\|ELMER0_GP_BIT4);
	}
	t1_tpi_write(cphy->adapter, A_ELMER0_INT_ENABLE, elmer);
	}

	return 0;
	}

	static int vsc8244_intr_clear(struct cphy *cphy)
	{
	u32 val;
	u32 elmer;

	/* Clear PHY interrupts by reading the register. */
	simple_mdio_read(cphy, VSC8244_INTR_ENABLE, &val);

	if (t1_is_asic(cphy->adapter)) {
	t1_tpi_read(cphy->adapter, A_ELMER0_INT_CAUSE, &elmer);
	elmer \|= ELMER0_GP_BIT1;
	if (is_T2(cphy->adapter)) {
	elmer \|= ELMER0_GP_BIT2\|ELMER0_GP_BIT3\|ELMER0_GP_BIT4;
	}
	t1_tpi_write(cphy->adapter, A_ELMER0_INT_CAUSE, elmer);
	}

	return 0;
	}

	/*
	* Force the PHY speed and duplex. This also disables auto-negotiation, except
	* for 1Gb/s, where auto-negotiation is mandatory.
	*/
	static int vsc8244_set_speed_duplex(struct cphy *phy, int speed, int duplex)
	{
	int err;
	unsigned int ctl;

	err = simple_mdio_read(phy, MII_BMCR, &ctl);
	if (err)
	return err;

	if (speed >= 0) {
	ctl &= ~(BMCR_SPEED100 \| BMCR_SPEED1000 \| BMCR_ANENABLE);
	if (speed == SPEED_100)
	ctl \|= BMCR_SPEED100;
	else if (speed == SPEED_1000)
	ctl \|= BMCR_SPEED1000;
	}
	if (duplex >= 0) {
	ctl &= ~(BMCR_FULLDPLX \| BMCR_ANENABLE);
	if (duplex == DUPLEX_FULL)
	ctl \|= BMCR_FULLDPLX;
	}
	if (ctl & BMCR_SPEED1000) /* auto-negotiation required for 1Gb/s */
	ctl \|= BMCR_ANENABLE;
	return simple_mdio_write(phy, MII_BMCR, ctl);
	}

	int t1_mdio_set_bits(struct cphy *phy, int mmd, int reg, unsigned int bits)
	{
	int ret;
	unsigned int val;

	ret = mdio_read(phy, mmd, reg, &val);
	if (!ret)
	ret = mdio_write(phy, mmd, reg, val \| bits);
	return ret;
	}

	static int vsc8244_autoneg_enable(struct cphy *cphy)
	{
	return t1_mdio_set_bits(cphy, 0, MII_BMCR,
	BMCR_ANENABLE \| BMCR_ANRESTART);
	}

	static int vsc8244_autoneg_restart(struct cphy *cphy)
	{
	return t1_mdio_set_bits(cphy, 0, MII_BMCR, BMCR_ANRESTART);
	}

	static int vsc8244_advertise(struct cphy *phy, unsigned int advertise_map)
	{
	int err;
	unsigned int val = 0;

	err = simple_mdio_read(phy, MII_CTRL1000, &val);
	if (err)
	return err;

	val &= ~(ADVERTISE_1000HALF \| ADVERTISE_1000FULL);
	if (advertise_map & ADVERTISED_1000baseT_Half)
	val \|= ADVERTISE_1000HALF;
	if (advertise_map & ADVERTISED_1000baseT_Full)
	val \|= ADVERTISE_1000FULL;

	err = simple_mdio_write(phy, MII_CTRL1000, val);
	if (err)
	return err;

	val = 1;
	if (advertise_map & ADVERTISED_10baseT_Half)
	val \|= ADVERTISE_10HALF;
	if (advertise_map & ADVERTISED_10baseT_Full)
	val \|= ADVERTISE_10FULL;
	if (advertise_map & ADVERTISED_100baseT_Half)
	val \|= ADVERTISE_100HALF;
	if (advertise_map & ADVERTISED_100baseT_Full)
	val \|= ADVERTISE_100FULL;
	if (advertise_map & ADVERTISED_PAUSE)
	val \|= ADVERTISE_PAUSE_CAP;
	if (advertise_map & ADVERTISED_ASYM_PAUSE)
	val \|= ADVERTISE_PAUSE_ASYM;
	return simple_mdio_write(phy, MII_ADVERTISE, val);
	}

	static int vsc8244_get_link_status(struct cphy cphy, int link_ok,
	int speed, int duplex, int *fc)
	{
	unsigned int bmcr, status, lpa, adv;
	int err, sp = -1, dplx = -1, pause = 0;

	err = simple_mdio_read(cphy, MII_BMCR, &bmcr);
	if (!err)
	err = simple_mdio_read(cphy, MII_BMSR, &status);
	if (err)
	return err;

	if (link_ok) {
	/*
	* BMSR_LSTATUS is latch-low, so if it is 0 we need to read it
	* once more to get the current link state.
	*/
	if (!(status & BMSR_LSTATUS))
	err = simple_mdio_read(cphy, MII_BMSR, &status);
	if (err)
	return err;
	*link_ok = (status & BMSR_LSTATUS) != 0;
	}
	if (!(bmcr & BMCR_ANENABLE)) {
	dplx = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
	if (bmcr & BMCR_SPEED1000)
	sp = SPEED_1000;
	else if (bmcr & BMCR_SPEED100)
	sp = SPEED_100;
	else
	sp = SPEED_10;
	} else if (status & BMSR_ANEGCOMPLETE) {
	err = simple_mdio_read(cphy, VSC8244_AUX_CTRL_STAT, &status);
	if (err)
	return err;

	dplx = (status & F_ACSR_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
	sp = G_ACSR_SPEED(status);
	if (sp == 0)
	sp = SPEED_10;
	else if (sp == 1)
	sp = SPEED_100;
	else
	sp = SPEED_1000;

	if (fc && dplx == DUPLEX_FULL) {
	err = simple_mdio_read(cphy, MII_LPA, &lpa);
	if (!err)
	err = simple_mdio_read(cphy, MII_ADVERTISE,
	&adv);
	if (err)
	return err;

	if (lpa & adv & ADVERTISE_PAUSE_CAP)
	pause = PAUSE_RX \| PAUSE_TX;
	else if ((lpa & ADVERTISE_PAUSE_CAP) &&
	(lpa & ADVERTISE_PAUSE_ASYM) &&
	(adv & ADVERTISE_PAUSE_ASYM))
	pause = PAUSE_TX;
	else if ((lpa & ADVERTISE_PAUSE_ASYM) &&
	(adv & ADVERTISE_PAUSE_CAP))
	pause = PAUSE_RX;
	}
	}
	if (speed)
	*speed = sp;
	if (duplex)
	*duplex = dplx;
	if (fc)
	*fc = pause;
	return 0;
	}

	static int vsc8244_intr_handler(struct cphy *cphy)
	{
	unsigned int cause;
	int err, cphy_cause = 0;

	err = simple_mdio_read(cphy, VSC8244_INTR_STATUS, &cause);
	if (err)
	return err;

	cause &= INTR_MASK;
	if (cause & CFG_CHG_INTR_MASK)
	cphy_cause \|= cphy_cause_link_change;
	if (cause & (VSC_INTR_RX_FIFO \| VSC_INTR_TX_FIFO))
	cphy_cause \|= cphy_cause_fifo_error;
	return cphy_cause;
	}

	static void vsc8244_destroy(struct cphy *cphy)
	{
	kfree(cphy);
	}

	static struct cphy_ops vsc8244_ops = {
	.destroy = vsc8244_destroy,
	.reset = vsc8244_reset,
	.interrupt_enable = vsc8244_intr_enable,
	.interrupt_disable = vsc8244_intr_disable,
	.interrupt_clear = vsc8244_intr_clear,
	.interrupt_handler = vsc8244_intr_handler,
	.autoneg_enable = vsc8244_autoneg_enable,
	.autoneg_restart = vsc8244_autoneg_restart,
	.advertise = vsc8244_advertise,
	.set_speed_duplex = vsc8244_set_speed_duplex,
	.get_link_status = vsc8244_get_link_status
	};

	static struct cphy* vsc8244_phy_create(adapter_t adapter, int phy_addr, struct mdio_ops mdio_ops)
	{
	struct cphy cphy = kzalloc(sizeof(cphy), GFP_KERNEL);

	if (!cphy)
	return NULL;

	cphy_init(cphy, adapter, phy_addr, &vsc8244_ops, mdio_ops);

	return cphy;
	}


	static int vsc8244_phy_reset(adapter_t* adapter)
	{
	return 0;
	}

	struct gphy t1_vsc8244_ops = {
	vsc8244_phy_create,
	vsc8244_phy_reset
	};