/*
 * Copyright (C) 2005,2010-2011 Freescale Semiconductor, Inc.
 *
 * Author: Shlomi Gridish
 *
 * Description: UCC GETH Driver -- PHY handling
 *              Driver for UEC on QE
 *              Based on 8260_io/fcc_enet.c
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <net.h>
#include <malloc.h>
#include <linux/errno.h>
#include <linux/immap_qe.h>
#include <asm/io.h>
#include "uccf.h"
#include "uec.h"
#include "uec_phy.h"
#include "miiphy.h"
#include <fsl_qe.h>
#include <phy.h>

#define ugphy_printk(format, arg...)  \
        printf(format "\n", ## arg)

#define ugphy_dbg(format, arg...)            \
        ugphy_printk(format , ## arg)
#define ugphy_err(format, arg...)            \
        ugphy_printk(format , ## arg)
#define ugphy_info(format, arg...)           \
        ugphy_printk(format , ## arg)
#define ugphy_warn(format, arg...)           \
        ugphy_printk(format , ## arg)

#ifdef UEC_VERBOSE_DEBUG
#define ugphy_vdbg ugphy_dbg
#else
#define ugphy_vdbg(ugeth, fmt, args...) do { } while (0)
#endif /* UEC_VERBOSE_DEBUG */

/*--------------------------------------------------------------------+
 * Fixed PHY (PHY-less) support for Ethernet Ports.
 *
 * Copied from arch/powerpc/cpu/ppc4xx/4xx_enet.c
 *--------------------------------------------------------------------*/

/*
 * Some boards do not have a PHY for each ethernet port. These ports are known
 * as Fixed PHY (or PHY-less) ports. For such ports, set the appropriate
 * CONFIG_SYS_UECx_PHY_ADDR equal to CONFIG_FIXED_PHY_ADDR (an unused address)
 * When the drver tries to identify the PHYs, CONFIG_FIXED_PHY will be returned
 * and the driver will search CONFIG_SYS_FIXED_PHY_PORTS to find what network
 * speed and duplex should be for the port.
 *
 * Example board header configuration file:
 *     #define CONFIG_FIXED_PHY   0xFFFFFFFF
 *     #define CONFIG_SYS_FIXED_PHY_ADDR 0x1E (pick an unused phy address)
 *
 *     #define CONFIG_SYS_UEC1_PHY_ADDR CONFIG_SYS_FIXED_PHY_ADDR
 *     #define CONFIG_SYS_UEC2_PHY_ADDR 0x02
 *     #define CONFIG_SYS_UEC3_PHY_ADDR CONFIG_SYS_FIXED_PHY_ADDR
 *     #define CONFIG_SYS_UEC4_PHY_ADDR 0x04
 *
 *     #define CONFIG_SYS_FIXED_PHY_PORT(name,speed,duplex) \
 *                 {name, speed, duplex},
 *
 *     #define CONFIG_SYS_FIXED_PHY_PORTS \
 *                 CONFIG_SYS_FIXED_PHY_PORT("UEC0",SPEED_100,DUPLEX_FULL) \
 *                 CONFIG_SYS_FIXED_PHY_PORT("UEC2",SPEED_100,DUPLEX_HALF)
 */

#ifndef CONFIG_FIXED_PHY
#define CONFIG_FIXED_PHY        0xFFFFFFFF /* Fixed PHY (PHY-less) */
#endif

#ifndef CONFIG_SYS_FIXED_PHY_PORTS
#define CONFIG_SYS_FIXED_PHY_PORTS      /* default is an empty array */
#endif

struct fixed_phy_port {
        char name[16];  /* ethernet port name */
        unsigned int speed;     /* specified speed 10,100 or 1000 */
        unsigned int duplex;    /* specified duplex FULL or HALF */
};

static const struct fixed_phy_port fixed_phy_port[] = {
        CONFIG_SYS_FIXED_PHY_PORTS /* defined in board configuration file */
};

/*--------------------------------------------------------------------+
 * BitBang MII support for ethernet ports
 *
 * Based from MPC8560ADS implementation
 *--------------------------------------------------------------------*/
/*
 * Example board header file to define bitbang ethernet ports:
 *
 * #define CONFIG_SYS_BITBANG_PHY_PORT(name) name,
 * #define CONFIG_SYS_BITBANG_PHY_PORTS CONFIG_SYS_BITBANG_PHY_PORT("UEC0")
*/
#ifndef CONFIG_SYS_BITBANG_PHY_PORTS
#define CONFIG_SYS_BITBANG_PHY_PORTS    /* default is an empty array */
#endif

#if defined(CONFIG_BITBANGMII)
static const char *bitbang_phy_port[] = {
        CONFIG_SYS_BITBANG_PHY_PORTS /* defined in board configuration file */
};
#endif /* CONFIG_BITBANGMII */

static void config_genmii_advert (struct uec_mii_info *mii_info);
static void genmii_setup_forced (struct uec_mii_info *mii_info);
static void genmii_restart_aneg (struct uec_mii_info *mii_info);
static int gbit_config_aneg (struct uec_mii_info *mii_info);
static int genmii_config_aneg (struct uec_mii_info *mii_info);
static int genmii_update_link (struct uec_mii_info *mii_info);
static int genmii_read_status (struct uec_mii_info *mii_info);
u16 uec_phy_read(struct uec_mii_info *mii_info, u16 regnum);
void uec_phy_write(struct uec_mii_info *mii_info, u16 regnum, u16 val);

/* Write value to the PHY for this device to the register at regnum, */
/* waiting until the write is done before it returns.  All PHY */
/* configuration has to be done through the TSEC1 MIIM regs */
void uec_write_phy_reg (struct eth_device *dev, int mii_id, int regnum, int value)
{
        uec_private_t *ugeth = (uec_private_t *) dev->priv;
        uec_mii_t *ug_regs;
        enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
        u32 tmp_reg;


#if defined(CONFIG_BITBANGMII)
        u32 i = 0;

        for (i = 0; i < ARRAY_SIZE(bitbang_phy_port); i++) {
                if (strncmp(dev->name, bitbang_phy_port[i],
                        sizeof(dev->name)) == 0) {
                        (void)bb_miiphy_write(NULL, mii_id, regnum, value);
                        return;
                }
        }
#endif /* CONFIG_BITBANGMII */

        ug_regs = ugeth->uec_mii_regs;

        /* Stop the MII management read cycle */
        out_be32 (&ug_regs->miimcom, 0);
        /* Setting up the MII Mangement Address Register */
        tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
        out_be32 (&ug_regs->miimadd, tmp_reg);

        /* Setting up the MII Mangement Control Register with the value */
        out_be32 (&ug_regs->miimcon, (u32) value);
        sync();

        /* Wait till MII management write is complete */
        while ((in_be32 (&ug_regs->miimind)) & MIIMIND_BUSY);
}

/* Reads from register regnum in the PHY for device dev, */
/* returning the value.  Clears miimcom first.  All PHY */
/* configuration has to be done through the TSEC1 MIIM regs */
int uec_read_phy_reg (struct eth_device *dev, int mii_id, int regnum)
{
        uec_private_t *ugeth = (uec_private_t *) dev->priv;
        uec_mii_t *ug_regs;
        enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
        u32 tmp_reg;
        u16 value;


#if defined(CONFIG_BITBANGMII)
        u32 i = 0;

        for (i = 0; i < ARRAY_SIZE(bitbang_phy_port); i++) {
                if (strncmp(dev->name, bitbang_phy_port[i],
                        sizeof(dev->name)) == 0) {
                        (void)bb_miiphy_read(NULL, mii_id, regnum, &value);
                        return (value);
                }
        }
#endif /* CONFIG_BITBANGMII */

        ug_regs = ugeth->uec_mii_regs;

        /* Setting up the MII Mangement Address Register */
        tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
        out_be32 (&ug_regs->miimadd, tmp_reg);

        /* clear MII management command cycle */
        out_be32 (&ug_regs->miimcom, 0);
        sync();

        /* Perform an MII management read cycle */
        out_be32 (&ug_regs->miimcom, MIIMCOM_READ_CYCLE);

        /* Wait till MII management write is complete */
        while ((in_be32 (&ug_regs->miimind)) &
               (MIIMIND_NOT_VALID | MIIMIND_BUSY));

        /* Read MII management status  */
        value = (u16) in_be32 (&ug_regs->miimstat);
        if (value == 0xffff)
                ugphy_vdbg
                        ("read wrong value : mii_id %d,mii_reg %d, base %08x",
                         mii_id, mii_reg, (u32) & (ug_regs->miimcfg));

        return (value);
}

void mii_clear_phy_interrupt (struct uec_mii_info *mii_info)
{
        if (mii_info->phyinfo->ack_interrupt)
                mii_info->phyinfo->ack_interrupt (mii_info);
}

void mii_configure_phy_interrupt (struct uec_mii_info *mii_info,
                                  u32 interrupts)
{
        mii_info->interrupts = interrupts;
        if (mii_info->phyinfo->config_intr)
                mii_info->phyinfo->config_intr (mii_info);
}

/* Writes MII_ADVERTISE with the appropriate values, after
 * sanitizing advertise to make sure only supported features
 * are advertised
 */
static void config_genmii_advert (struct uec_mii_info *mii_info)
{
        u32 advertise;
        u16 adv;

        /* Only allow advertising what this PHY supports */
        mii_info->advertising &= mii_info->phyinfo->features;
        advertise = mii_info->advertising;

        /* Setup standard advertisement */
        adv = uec_phy_read(mii_info, MII_ADVERTISE);
        adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
        if (advertise & ADVERTISED_10baseT_Half)
                adv |= ADVERTISE_10HALF;
        if (advertise & ADVERTISED_10baseT_Full)
                adv |= ADVERTISE_10FULL;
        if (advertise & ADVERTISED_100baseT_Half)
                adv |= ADVERTISE_100HALF;
        if (advertise & ADVERTISED_100baseT_Full)
                adv |= ADVERTISE_100FULL;
        uec_phy_write(mii_info, MII_ADVERTISE, adv);
}

static void genmii_setup_forced (struct uec_mii_info *mii_info)
{
        u16 ctrl;
        u32 features = mii_info->phyinfo->features;

        ctrl = uec_phy_read(mii_info, MII_BMCR);

        ctrl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 |
                  BMCR_SPEED1000 | BMCR_ANENABLE);
        ctrl |= BMCR_RESET;

        switch (mii_info->speed) {
        case SPEED_1000:
                if (features & (SUPPORTED_1000baseT_Half
                                | SUPPORTED_1000baseT_Full)) {
                        ctrl |= BMCR_SPEED1000;
                        break;
                }
                mii_info->speed = SPEED_100;
        case SPEED_100:
                if (features & (SUPPORTED_100baseT_Half
                                | SUPPORTED_100baseT_Full)) {
                        ctrl |= BMCR_SPEED100;
                        break;
                }
                mii_info->speed = SPEED_10;
        case SPEED_10:
                if (features & (SUPPORTED_10baseT_Half
                                | SUPPORTED_10baseT_Full))
                        break;
        default:                /* Unsupported speed! */
                ugphy_err ("%s: Bad speed!", mii_info->dev->name);
                break;
        }

        uec_phy_write(mii_info, MII_BMCR, ctrl);
}

/* Enable and Restart Autonegotiation */
static void genmii_restart_aneg (struct uec_mii_info *mii_info)
{
        u16 ctl;

        ctl = uec_phy_read(mii_info, MII_BMCR);
        ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
        uec_phy_write(mii_info, MII_BMCR, ctl);
}

static int gbit_config_aneg (struct uec_mii_info *mii_info)
{
        u16 adv;
        u32 advertise;

        if (mii_info->autoneg) {
                /* Configure the ADVERTISE register */
                config_genmii_advert (mii_info);
                advertise = mii_info->advertising;

                adv = uec_phy_read(mii_info, MII_CTRL1000);
                adv &= ~(ADVERTISE_1000FULL |
                         ADVERTISE_1000HALF);
                if (advertise & SUPPORTED_1000baseT_Half)
                        adv |= ADVERTISE_1000HALF;
                if (advertise & SUPPORTED_1000baseT_Full)
                        adv |= ADVERTISE_1000FULL;
                uec_phy_write(mii_info, MII_CTRL1000, adv);

                /* Start/Restart aneg */
                genmii_restart_aneg (mii_info);
        } else
                genmii_setup_forced (mii_info);

        return 0;
}

static int marvell_config_aneg (struct uec_mii_info *mii_info)
{
        /* The Marvell PHY has an errata which requires
         * that certain registers get written in order
         * to restart autonegotiation */
        uec_phy_write(mii_info, MII_BMCR, BMCR_RESET);

        uec_phy_write(mii_info, 0x1d, 0x1f);
        uec_phy_write(mii_info, 0x1e, 0x200c);
        uec_phy_write(mii_info, 0x1d, 0x5);
        uec_phy_write(mii_info, 0x1e, 0);
        uec_phy_write(mii_info, 0x1e, 0x100);

        gbit_config_aneg (mii_info);

        return 0;
}

static int genmii_config_aneg (struct uec_mii_info *mii_info)
{
        if (mii_info->autoneg) {
                /* Speed up the common case, if link is already up, speed and
                   duplex match, skip auto neg as it already matches */
                if (!genmii_read_status(mii_info) && mii_info->link)
                        if (mii_info->duplex == DUPLEX_FULL &&
                            mii_info->speed == SPEED_100)
                                if (mii_info->advertising &
                                    ADVERTISED_100baseT_Full)
                                        return 0;

                config_genmii_advert (mii_info);
                genmii_restart_aneg (mii_info);
        } else
                genmii_setup_forced (mii_info);

        return 0;
}

static int genmii_update_link (struct uec_mii_info *mii_info)
{
        u16 status;

        /* Status is read once to clear old link state */
        uec_phy_read(mii_info, MII_BMSR);

        /*
         * Wait if the link is up, and autonegotiation is in progress
         * (ie - we're capable and it's not done)
         */
        status = uec_phy_read(mii_info, MII_BMSR);
        if ((status & BMSR_LSTATUS) && (status & BMSR_ANEGCAPABLE)
            && !(status & BMSR_ANEGCOMPLETE)) {
                int i = 0;

                while (!(status & BMSR_ANEGCOMPLETE)) {
                        /*
                         * Timeout reached ?
                         */
                        if (i > UGETH_AN_TIMEOUT) {
                                mii_info->link = 0;
                                return 0;
                        }

                        i++;
                        udelay(1000);   /* 1 ms */
                        status = uec_phy_read(mii_info, MII_BMSR);
                }
                mii_info->link = 1;
        } else {
                if (status & BMSR_LSTATUS)
                        mii_info->link = 1;
                else
                        mii_info->link = 0;
        }

        return 0;
}

static int genmii_read_status (struct uec_mii_info *mii_info)
{
        u16 status;
        int err;

        /* Update the link, but return if there
         * was an error */
        err = genmii_update_link (mii_info);
        if (err)
                return err;

        if (mii_info->autoneg) {
                status = uec_phy_read(mii_info, MII_STAT1000);

                if (status & (LPA_1000FULL | LPA_1000HALF)) {
                        mii_info->speed = SPEED_1000;
                        if (status & LPA_1000FULL)
                                mii_info->duplex = DUPLEX_FULL;
                        else
                                mii_info->duplex = DUPLEX_HALF;
                } else {
                        status = uec_phy_read(mii_info, MII_LPA);

                        if (status & (LPA_10FULL | LPA_100FULL))
                                mii_info->duplex = DUPLEX_FULL;
                        else
                                mii_info->duplex = DUPLEX_HALF;
                        if (status & (LPA_100FULL | LPA_100HALF))
                                mii_info->speed = SPEED_100;
                        else
                                mii_info->speed = SPEED_10;
                }
                mii_info->pause = 0;
        }
        /* On non-aneg, we assume what we put in BMCR is the speed,
         * though magic-aneg shouldn't prevent this case from occurring
         */

        return 0;
}

static int bcm_init(struct uec_mii_info *mii_info)
{
        struct eth_device *edev = mii_info->dev;
        uec_private_t *uec = edev->priv;

        gbit_config_aneg(mii_info);

        if ((uec->uec_info->enet_interface_type ==
                                PHY_INTERFACE_MODE_RGMII_RXID) &&
                        (uec->uec_info->speed == SPEED_1000)) {
                u16 val;
                int cnt = 50;

                /* Wait for aneg to complete. */
                do
                        val = uec_phy_read(mii_info, MII_BMSR);
                while (--cnt && !(val & BMSR_ANEGCOMPLETE));

                /* Set RDX clk delay. */
                uec_phy_write(mii_info, 0x18, 0x7 | (7 << 12));

                val = uec_phy_read(mii_info, 0x18);
                /* Set RDX-RXC skew. */
                val |= (1 << 8);
                val |= (7 | (7 << 12));
                /* Write bits 14:0. */
                val |= (1 << 15);
                uec_phy_write(mii_info, 0x18, val);
        }

         return 0;
}

static int uec_marvell_init(struct uec_mii_info *mii_info)
{
        struct eth_device *edev = mii_info->dev;
        uec_private_t *uec = edev->priv;
        phy_interface_t iface = uec->uec_info->enet_interface_type;
        int     speed = uec->uec_info->speed;

        if ((speed == SPEED_1000) &&
           (iface == PHY_INTERFACE_MODE_RGMII_ID ||
            iface == PHY_INTERFACE_MODE_RGMII_RXID ||
            iface == PHY_INTERFACE_MODE_RGMII_TXID)) {
                int temp;

                temp = uec_phy_read(mii_info, MII_M1111_PHY_EXT_CR);
                if (iface == PHY_INTERFACE_MODE_RGMII_ID) {
                        temp |= MII_M1111_RX_DELAY | MII_M1111_TX_DELAY;
                } else if (iface == PHY_INTERFACE_MODE_RGMII_RXID) {
                        temp &= ~MII_M1111_TX_DELAY;
                        temp |= MII_M1111_RX_DELAY;
                } else if (iface == PHY_INTERFACE_MODE_RGMII_TXID) {
                        temp &= ~MII_M1111_RX_DELAY;
                        temp |= MII_M1111_TX_DELAY;
                }
                uec_phy_write(mii_info, MII_M1111_PHY_EXT_CR, temp);

                temp = uec_phy_read(mii_info, MII_M1111_PHY_EXT_SR);
                temp &= ~MII_M1111_HWCFG_MODE_MASK;
                temp |= MII_M1111_HWCFG_MODE_RGMII;
                uec_phy_write(mii_info, MII_M1111_PHY_EXT_SR, temp);

                uec_phy_write(mii_info, MII_BMCR, BMCR_RESET);
        }

        return 0;
}

static int marvell_read_status (struct uec_mii_info *mii_info)
{
        u16 status;
        int err;

        /* Update the link, but return if there
         * was an error */
        err = genmii_update_link (mii_info);
        if (err)
                return err;

        /* If the link is up, read the speed and duplex */
        /* If we aren't autonegotiating, assume speeds
         * are as set */
        if (mii_info->autoneg && mii_info->link) {
                int speed;

                status = uec_phy_read(mii_info, MII_M1011_PHY_SPEC_STATUS);

                /* Get the duplexity */
                if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
                        mii_info->duplex = DUPLEX_FULL;
                else
                        mii_info->duplex = DUPLEX_HALF;

                /* Get the speed */
                speed = status & MII_M1011_PHY_SPEC_STATUS_SPD_MASK;
                switch (speed) {
                case MII_M1011_PHY_SPEC_STATUS_1000:
                        mii_info->speed = SPEED_1000;
                        break;
                case MII_M1011_PHY_SPEC_STATUS_100:
                        mii_info->speed = SPEED_100;
                        break;
                default:
                        mii_info->speed = SPEED_10;
                        break;
                }
                mii_info->pause = 0;
        }

        return 0;
}

static int marvell_ack_interrupt (struct uec_mii_info *mii_info)
{
        /* Clear the interrupts by reading the reg */
        uec_phy_read(mii_info, MII_M1011_IEVENT);

        return 0;
}

static int marvell_config_intr (struct uec_mii_info *mii_info)
{
        if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
                uec_phy_write(mii_info, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
        else
                uec_phy_write(mii_info, MII_M1011_IMASK,
                                MII_M1011_IMASK_CLEAR);

        return 0;
}

static int dm9161_init (struct uec_mii_info *mii_info)
{
        /* Reset the PHY */
        uec_phy_write(mii_info, MII_BMCR, uec_phy_read(mii_info, MII_BMCR) |
                   BMCR_RESET);
        /* PHY and MAC connect */
        uec_phy_write(mii_info, MII_BMCR, uec_phy_read(mii_info, MII_BMCR) &
                   ~BMCR_ISOLATE);

        uec_phy_write(mii_info, MII_DM9161_SCR, MII_DM9161_SCR_INIT);

        config_genmii_advert (mii_info);
        /* Start/restart aneg */
        genmii_config_aneg (mii_info);

        return 0;
}

static int dm9161_config_aneg (struct uec_mii_info *mii_info)
{
        return 0;
}

static int dm9161_read_status (struct uec_mii_info *mii_info)
{
        u16 status;
        int err;

        /* Update the link, but return if there was an error */
        err = genmii_update_link (mii_info);
        if (err)
                return err;
        /* If the link is up, read the speed and duplex
           If we aren't autonegotiating assume speeds are as set */
        if (mii_info->autoneg && mii_info->link) {
                status = uec_phy_read(mii_info, MII_DM9161_SCSR);
                if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_100H))
                        mii_info->speed = SPEED_100;
                else
                        mii_info->speed = SPEED_10;

                if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_10F))
                        mii_info->duplex = DUPLEX_FULL;
                else
                        mii_info->duplex = DUPLEX_HALF;
        }

        return 0;
}

static int dm9161_ack_interrupt (struct uec_mii_info *mii_info)
{
        /* Clear the interrupt by reading the reg */
        uec_phy_read(mii_info, MII_DM9161_INTR);

        return 0;
}

static int dm9161_config_intr (struct uec_mii_info *mii_info)
{
        if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
                uec_phy_write(mii_info, MII_DM9161_INTR, MII_DM9161_INTR_INIT);
        else
                uec_phy_write(mii_info, MII_DM9161_INTR, MII_DM9161_INTR_STOP);

        return 0;
}

static void dm9161_close (struct uec_mii_info *mii_info)
{
}

static int fixed_phy_aneg (struct uec_mii_info *mii_info)
{
        mii_info->autoneg = 0; /* Turn off auto negotiation for fixed phy */
        return 0;
}

static int fixed_phy_read_status (struct uec_mii_info *mii_info)
{
        int i = 0;

        for (i = 0; i < ARRAY_SIZE(fixed_phy_port); i++) {
                if (strncmp(mii_info->dev->name, fixed_phy_port[i].name,
                                strlen(mii_info->dev->name)) == 0) {
                        mii_info->speed = fixed_phy_port[i].speed;
                        mii_info->duplex = fixed_phy_port[i].duplex;
                        mii_info->link = 1; /* Link is always UP */
                        mii_info->pause = 0;
                        break;
                }
        }
        return 0;
}

static int smsc_config_aneg (struct uec_mii_info *mii_info)
{
        return 0;
}

static int smsc_read_status (struct uec_mii_info *mii_info)
{
        u16 status;
        int err;

        /* Update the link, but return if there
         * was an error */
        err = genmii_update_link (mii_info);
        if (err)
                return err;

        /* If the link is up, read the speed and duplex */
        /* If we aren't autonegotiating, assume speeds
         * are as set */
        if (mii_info->autoneg && mii_info->link) {
                int     val;

                status = uec_phy_read(mii_info, 0x1f);
                val = (status & 0x1c) >> 2;

                switch (val) {
                        case 1:
                                mii_info->duplex = DUPLEX_HALF;
                                mii_info->speed = SPEED_10;
                                break;
                        case 5:
                                mii_info->duplex = DUPLEX_FULL;
                                mii_info->speed = SPEED_10;
                                break;
                        case 2:
                                mii_info->duplex = DUPLEX_HALF;
                                mii_info->speed = SPEED_100;
                                break;
                        case 6:
                                mii_info->duplex = DUPLEX_FULL;
                                mii_info->speed = SPEED_100;
                                break;
                }
                mii_info->pause = 0;
        }

        return 0;
}

static struct phy_info phy_info_dm9161 = {
        .phy_id = 0x0181b880,
        .phy_id_mask = 0x0ffffff0,
        .name = "Davicom DM9161E",
        .init = dm9161_init,
        .config_aneg = dm9161_config_aneg,
        .read_status = dm9161_read_status,
        .close = dm9161_close,
};

static struct phy_info phy_info_dm9161a = {
        .phy_id = 0x0181b8a0,
        .phy_id_mask = 0x0ffffff0,
        .name = "Davicom DM9161A",
        .features = MII_BASIC_FEATURES,
        .init = dm9161_init,
        .config_aneg = dm9161_config_aneg,
        .read_status = dm9161_read_status,
        .ack_interrupt = dm9161_ack_interrupt,
        .config_intr = dm9161_config_intr,
        .close = dm9161_close,
};

static struct phy_info phy_info_marvell = {
        .phy_id = 0x01410c00,
        .phy_id_mask = 0xffffff00,
        .name = "Marvell 88E11x1",
        .features = MII_GBIT_FEATURES,
        .init = &uec_marvell_init,
        .config_aneg = &marvell_config_aneg,
        .read_status = &marvell_read_status,
        .ack_interrupt = &marvell_ack_interrupt,
        .config_intr = &marvell_config_intr,
};

static struct phy_info phy_info_bcm5481 = {
        .phy_id = 0x0143bca0,
        .phy_id_mask = 0xffffff0,
        .name = "Broadcom 5481",
        .features = MII_GBIT_FEATURES,
        .read_status = genmii_read_status,
        .init = bcm_init,
};

static struct phy_info phy_info_fixedphy = {
        .phy_id = CONFIG_FIXED_PHY,
        .phy_id_mask = CONFIG_FIXED_PHY,
        .name = "Fixed PHY",
        .config_aneg = fixed_phy_aneg,
        .read_status = fixed_phy_read_status,
};

static struct phy_info phy_info_smsclan8700 = {
        .phy_id = 0x0007c0c0,
        .phy_id_mask = 0xfffffff0,
        .name = "SMSC LAN8700",
        .features = MII_BASIC_FEATURES,
        .config_aneg = smsc_config_aneg,
        .read_status = smsc_read_status,
};

static struct phy_info phy_info_genmii = {
        .phy_id = 0x00000000,
        .phy_id_mask = 0x00000000,
        .name = "Generic MII",
        .features = MII_BASIC_FEATURES,
        .config_aneg = genmii_config_aneg,
        .read_status = genmii_read_status,
};

static struct phy_info *phy_info[] = {
        &phy_info_dm9161,
        &phy_info_dm9161a,
        &phy_info_marvell,
        &phy_info_bcm5481,
        &phy_info_smsclan8700,
        &phy_info_fixedphy,
        &phy_info_genmii,
        NULL
};

u16 uec_phy_read(struct uec_mii_info *mii_info, u16 regnum)
{
        return mii_info->mdio_read (mii_info->dev, mii_info->mii_id, regnum);
}

void uec_phy_write(struct uec_mii_info *mii_info, u16 regnum, u16 val)
{
        mii_info->mdio_write (mii_info->dev, mii_info->mii_id, regnum, val);
}

/* Use the PHY ID registers to determine what type of PHY is attached
 * to device dev.  return a struct phy_info structure describing that PHY
 */
struct phy_info *uec_get_phy_info (struct uec_mii_info *mii_info)
{
        u16 phy_reg;
        u32 phy_ID;
        int i;
        struct phy_info *theInfo = NULL;

        /* Grab the bits from PHYIR1, and put them in the upper half */
        phy_reg = uec_phy_read(mii_info, MII_PHYSID1);
        phy_ID = (phy_reg & 0xffff) << 16;

        /* Grab the bits from PHYIR2, and put them in the lower half */
        phy_reg = uec_phy_read(mii_info, MII_PHYSID2);
        phy_ID |= (phy_reg & 0xffff);

        /* loop through all the known PHY types, and find one that */
        /* matches the ID we read from the PHY. */
        for (i = 0; phy_info[i]; i++)
                if (phy_info[i]->phy_id ==
                    (phy_ID & phy_info[i]->phy_id_mask)) {
                        theInfo = phy_info[i];
                        break;
                }

        /* This shouldn't happen, as we have generic PHY support */
        if (theInfo == NULL) {
                ugphy_info ("UEC: PHY id %x is not supported!", phy_ID);
                return NULL;
        } else {
                ugphy_info ("UEC: PHY is %s (%x)", theInfo->name, phy_ID);
        }

        return theInfo;
}

void marvell_phy_interface_mode(struct eth_device *dev, phy_interface_t type,
                int speed)
{
        uec_private_t *uec = (uec_private_t *) dev->priv;
        struct uec_mii_info *mii_info;
        u16 status;

        if (!uec->mii_info) {
                printf ("%s: the PHY not initialized\n", __FUNCTION__);
                return;
        }
        mii_info = uec->mii_info;

        if (type == PHY_INTERFACE_MODE_RGMII) {
                if (speed == SPEED_100) {
                        uec_phy_write(mii_info, 0x00, 0x9140);
                        uec_phy_write(mii_info, 0x1d, 0x001f);
                        uec_phy_write(mii_info, 0x1e, 0x200c);
                        uec_phy_write(mii_info, 0x1d, 0x0005);
                        uec_phy_write(mii_info, 0x1e, 0x0000);
                        uec_phy_write(mii_info, 0x1e, 0x0100);
                        uec_phy_write(mii_info, 0x09, 0x0e00);
                        uec_phy_write(mii_info, 0x04, 0x01e1);
                        uec_phy_write(mii_info, 0x00, 0x9140);
                        uec_phy_write(mii_info, 0x00, 0x1000);
                        udelay (100000);
                        uec_phy_write(mii_info, 0x00, 0x2900);
                        uec_phy_write(mii_info, 0x14, 0x0cd2);
                        uec_phy_write(mii_info, 0x00, 0xa100);
                        uec_phy_write(mii_info, 0x09, 0x0000);
                        uec_phy_write(mii_info, 0x1b, 0x800b);
                        uec_phy_write(mii_info, 0x04, 0x05e1);
                        uec_phy_write(mii_info, 0x00, 0xa100);
                        uec_phy_write(mii_info, 0x00, 0x2100);
                        udelay (1000000);
                } else if (speed == SPEED_10) {
                        uec_phy_write(mii_info, 0x14, 0x8e40);
                        uec_phy_write(mii_info, 0x1b, 0x800b);
                        uec_phy_write(mii_info, 0x14, 0x0c82);
                        uec_phy_write(mii_info, 0x00, 0x8100);
                        udelay (1000000);
                }
        }

        /* handle 88e1111 rev.B2 erratum 5.6 */
        if (mii_info->autoneg) {
                status = uec_phy_read(mii_info, MII_BMCR);
                uec_phy_write(mii_info, MII_BMCR, status | BMCR_ANENABLE);
        }
        /* now the B2 will correctly report autoneg completion status */
}

void change_phy_interface_mode (struct eth_device *dev,
                                phy_interface_t type, int speed)
{
#ifdef CONFIG_PHY_MODE_NEED_CHANGE
        marvell_phy_interface_mode (dev, type, speed);
#endif
}