freebsd-nq/sys/contrib/octeon-sdk/cvmx-helper-board.c

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/**
 * @file
 *
 * Helper functions to abstract board specific data about
 * network ports from the rest of the cvmx-helper files.
 *
 * <hr>$Revision: 49627 $<hr>
 */
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <linux/module.h>
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-bootinfo.h>
#include <asm/octeon/cvmx-smix-defs.h>
#include <asm/octeon/cvmx-gmxx-defs.h>
#include <asm/octeon/cvmx-asxx-defs.h>
#include <asm/octeon/cvmx-mdio.h>
#include <asm/octeon/cvmx-helper.h>
#include <asm/octeon/cvmx-helper-util.h>
#include <asm/octeon/cvmx-helper-board.h>
#include <asm/octeon/cvmx-twsi.h>
#else
#include "cvmx.h"
#include "cvmx-app-init.h"
#include "cvmx-sysinfo.h"
#include "cvmx-twsi.h"
#include "cvmx-mdio.h"
#include "cvmx-helper.h"
#include "cvmx-helper-util.h"
#include "cvmx-helper-board.h"
#endif

/**
 * cvmx_override_board_link_get(int ipd_port) is a function
 * pointer. It is meant to allow customization of the process of
 * talking to a PHY to determine link speed. It is called every
 * time a PHY must be polled for link status. Users should set
 * this pointer to a function before calling any cvmx-helper
 * operations.
 */
CVMX_SHARED cvmx_helper_link_info_t (*cvmx_override_board_link_get)(int ipd_port) = NULL;

/**
 * Return the MII PHY address associated with the given IPD
 * port. A result of -1 means there isn't a MII capable PHY
 * connected to this port. On chips supporting multiple MII
 * busses the bus number is encoded in bits <15:8>.
 *
 * This function must be modified for every new Octeon board.
 * Internally it uses switch statements based on the cvmx_sysinfo
 * data to determine board types and revisions. It replies on the
 * fact that every Octeon board receives a unique board type
 * enumeration from the bootloader.
 *
 * @param ipd_port Octeon IPD port to get the MII address for.
 *
 * @return MII PHY address and bus number or -1.
 */
int cvmx_helper_board_get_mii_address(int ipd_port)
{
    /*
     * Board types we have to know at compile-time.
     */
#ifdef OCTEON_BOARD_CAPK_0100ND
    switch (ipd_port) {
    case 0:
	return 2;
    case 1:
	return 3;
    case 2:
	/* XXX Switch PHY?  */
	return -1;
    default:
	return -1;
    }
#endif

    /*
     * For board types we can determine at runtime.
     */
    switch (cvmx_sysinfo_get()->board_type)
    {
        case CVMX_BOARD_TYPE_SIM:
            /* Simulator doesn't have MII */
            return -1;
        case CVMX_BOARD_TYPE_EBT3000:
        case CVMX_BOARD_TYPE_EBT5800:
        case CVMX_BOARD_TYPE_THUNDER:
        case CVMX_BOARD_TYPE_NICPRO2:
            /* Interface 0 is SPI4, interface 1 is RGMII */
            if ((ipd_port >= 16) && (ipd_port < 20))
                return ipd_port - 16;
            else
                return -1;
        case CVMX_BOARD_TYPE_LANAI2_A:
            if (ipd_port == 0)
                return 0;
            else
                return -1;
        case CVMX_BOARD_TYPE_LANAI2_U:
        case CVMX_BOARD_TYPE_LANAI2_G:
            if (ipd_port == 0)
                return 0x1c;
            else
                return -1;
        case CVMX_BOARD_TYPE_KODAMA:
        case CVMX_BOARD_TYPE_EBH3100:
        case CVMX_BOARD_TYPE_HIKARI:
        case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
        case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
        case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
            /* Port 0 is WAN connected to a PHY, Port 1 is GMII connected to a
                switch */
            if (ipd_port == 0)
                return 4;
            else if (ipd_port == 1)
                return 9;
            else
                return -1;
        case CVMX_BOARD_TYPE_NAC38:
            /* Board has 8 RGMII ports PHYs are 0-7 */
            if ((ipd_port >= 0) && (ipd_port < 4))
                return ipd_port;
            else if ((ipd_port >= 16) && (ipd_port < 20))
                return ipd_port - 16 + 4;
            else
                return -1;
        case CVMX_BOARD_TYPE_EBH3000:
            /* Board has dual SPI4 and no PHYs */
            return -1;
        case CVMX_BOARD_TYPE_EBT5810:
            /* Board has 10g PHYs hooked up to the MII controller on the
            ** IXF18201 MAC.  The 10G PHYS use clause 45 MDIO which the CN58XX
            ** does not support. All MII accesses go through the IXF part. */
            return -1;
        case CVMX_BOARD_TYPE_EBH5200:
        case CVMX_BOARD_TYPE_EBH5201:
        case CVMX_BOARD_TYPE_EBT5200:
            /* Board has 2 management ports */
            if ((ipd_port >= CVMX_HELPER_BOARD_MGMT_IPD_PORT) && (ipd_port < (CVMX_HELPER_BOARD_MGMT_IPD_PORT + 2)))
                return ipd_port - CVMX_HELPER_BOARD_MGMT_IPD_PORT;
            /* Board has 4 SGMII ports. The PHYs start right after the MII
                ports MII0 = 0, MII1 = 1, SGMII = 2-5 */
            if ((ipd_port >= 0) && (ipd_port < 4))
                return ipd_port+2;
            else
                return -1;
        case CVMX_BOARD_TYPE_EBH5600:
        case CVMX_BOARD_TYPE_EBH5601:
        case CVMX_BOARD_TYPE_EBH5610:
            /* Board has 1 management port */
            if (ipd_port == CVMX_HELPER_BOARD_MGMT_IPD_PORT)
                return 0;
            /* Board has 8 SGMII ports. 4 connect out, two connect to a switch,
                and 2 loop to each other */
            if ((ipd_port >= 0) && (ipd_port < 4))
                return ipd_port+1;
            else
                return -1;
        case CVMX_BOARD_TYPE_EBB5600:
            {
                static unsigned char qlm_switch_addr = 0;

                /* Board has 1 management port */
                if (ipd_port == CVMX_HELPER_BOARD_MGMT_IPD_PORT)
                    return 0;

                /* Board has 8 SGMII ports. 4 connected QLM1, 4 connected QLM3 */
                if ((ipd_port >= 0) && (ipd_port < 4))
                {
                    if (qlm_switch_addr != 0x3)
                    {
                        qlm_switch_addr = 0x3;  /* QLM1 */
                        cvmx_twsix_write_ia(0, 0x71, 0, 1, 1, qlm_switch_addr);
                        cvmx_wait_usec(11000); /* Let the write complete */
                    }
                    return ipd_port+1 + (1<<8);
                }
                else if ((ipd_port >= 16) && (ipd_port < 20))
                {
                    if (qlm_switch_addr != 0xC)
                    {
                        qlm_switch_addr = 0xC;  /* QLM3 */
                        cvmx_twsix_write_ia(0, 0x71, 0, 1, 1, qlm_switch_addr);
                        cvmx_wait_usec(11000); /* Let the write complete */
                    }
                    return ipd_port-16+1 + (1<<8);
                }
                else
                    return -1;
            }
        case CVMX_BOARD_TYPE_EBB6300:
            /* Board has 2 management ports */
            if ((ipd_port >= CVMX_HELPER_BOARD_MGMT_IPD_PORT) && (ipd_port < (CVMX_HELPER_BOARD_MGMT_IPD_PORT + 2)))
                return ipd_port - CVMX_HELPER_BOARD_MGMT_IPD_PORT + 4;
            if ((ipd_port >= 0) && (ipd_port < 4))
                return ipd_port + 1 + (1<<8);
            else
                return -1;
        case CVMX_BOARD_TYPE_CUST_NB5:
            if (ipd_port == 2)
                return 4;
            else
                return -1;
        case CVMX_BOARD_TYPE_NIC_XLE_4G:
            /* Board has 4 SGMII ports. connected QLM3(interface 1) */
            if ((ipd_port >= 16) && (ipd_port < 20))
                return ipd_port - 16 + 1;
            else
                return -1;
        case CVMX_BOARD_TYPE_NIC_XLE_10G:
            return -1;  /* We don't use clause 45 MDIO for anything */
        case CVMX_BOARD_TYPE_BBGW_REF:
            return -1;  /* No PHYs are connected to Octeon, everything is through switch */
	case CVMX_BOARD_TYPE_CUST_WSX16:
		if (ipd_port >= 0 && ipd_port <= 3)
			return ipd_port;
		else if (ipd_port >= 16 && ipd_port <= 19)
			return ipd_port - 16 + 4;
		else
			return -1;

	/* Private vendor-defined boards.  */
#if defined(OCTEON_VENDOR_LANNER)
	case CVMX_BOARD_TYPE_CUST_LANNER_MR955:
	    /* Interface 1 is 12 BCM5482S PHYs.  */
            if ((ipd_port >= 16) && (ipd_port < 28))
                return ipd_port - 16;
	    return -1;
	case CVMX_BOARD_TYPE_CUST_LANNER_MR730:
            if ((ipd_port >= CVMX_HELPER_BOARD_MGMT_IPD_PORT) && (ipd_port < (CVMX_HELPER_BOARD_MGMT_IPD_PORT + 2)))
		return (ipd_port - CVMX_HELPER_BOARD_MGMT_IPD_PORT) + 0x81;
            if ((ipd_port >= 0) && (ipd_port < 4))
                return ipd_port;
	    return -1;
	case CVMX_BOARD_TYPE_CUST_LANNER_MR320:
	case CVMX_BOARD_TYPE_CUST_LANNER_MR321X:
	    /* Port 0 is a Marvell 88E6161 switch, ports 1 and 2 are Marvell
	       88E1111 interfaces.  */
	    switch (ipd_port) {
	    case 0:
		return 16;
	    case 1:
		return 1;
	    case 2:
		return 2;
	    default:
		return -1;
	    }
#endif
    }

    /* Some unknown board. Somebody forgot to update this function... */
    cvmx_dprintf("%s: Unknown board type %d\n",
                 __FUNCTION__, cvmx_sysinfo_get()->board_type);
    return -1;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_helper_board_get_mii_address);
#endif


/**
 * @INTERNAL
 * This function is the board specific method of determining an
 * ethernet ports link speed. Most Octeon boards have Marvell PHYs
 * and are handled by the fall through case. This function must be
 * updated for boards that don't have the normal Marvell PHYs.
 *
 * This function must be modified for every new Octeon board.
 * Internally it uses switch statements based on the cvmx_sysinfo
 * data to determine board types and revisions. It relies on the
 * fact that every Octeon board receives a unique board type
 * enumeration from the bootloader.
 *
 * @param ipd_port IPD input port associated with the port we want to get link
 *                 status for.
 *
 * @return The ports link status. If the link isn't fully resolved, this must
 *         return zero.
 */
cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port)
{
    cvmx_helper_link_info_t result;
    int phy_addr;
    int is_broadcom_phy = 0;

    /* Give the user a chance to override the processing of this function */
    if (cvmx_override_board_link_get)
        return cvmx_override_board_link_get(ipd_port);

    /* Unless we fix it later, all links are defaulted to down */
    result.u64 = 0;

#if !defined(OCTEON_BOARD_CAPK_0100ND)
    /* This switch statement should handle all ports that either don't use
        Marvell PHYS, or don't support in-band status */
    switch (cvmx_sysinfo_get()->board_type)
    {
        case CVMX_BOARD_TYPE_SIM:
            /* The simulator gives you a simulated 1Gbps full duplex link */
            result.s.link_up = 1;
            result.s.full_duplex = 1;
            result.s.speed = 1000;
            return result;
        case CVMX_BOARD_TYPE_LANAI2_A:
        case CVMX_BOARD_TYPE_LANAI2_U:
        case CVMX_BOARD_TYPE_LANAI2_G:
            break;
        case CVMX_BOARD_TYPE_EBH3100:
        case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
        case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
        case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
            /* Port 1 on these boards is always Gigabit */
            if (ipd_port == 1)
            {
                result.s.link_up = 1;
                result.s.full_duplex = 1;
                result.s.speed = 1000;
                return result;
            }
            /* Fall through to the generic code below */
            break;
        case CVMX_BOARD_TYPE_EBH5600:
        case CVMX_BOARD_TYPE_EBH5601:
        case CVMX_BOARD_TYPE_EBH5610:
            /* Board has 1 management ports */
            if (ipd_port == CVMX_HELPER_BOARD_MGMT_IPD_PORT)
                is_broadcom_phy = 1;
            break;
        case CVMX_BOARD_TYPE_EBH5200:
        case CVMX_BOARD_TYPE_EBH5201:
        case CVMX_BOARD_TYPE_EBT5200:
            /* Board has 2 management ports */
            if ((ipd_port >= CVMX_HELPER_BOARD_MGMT_IPD_PORT) && (ipd_port < (CVMX_HELPER_BOARD_MGMT_IPD_PORT + 2)))
                is_broadcom_phy = 1;
            break;
        case CVMX_BOARD_TYPE_EBB6300:   /* Only for MII mode, with PHY addresses 0/1. Default is RGMII*/
            if ((ipd_port >= CVMX_HELPER_BOARD_MGMT_IPD_PORT) && (ipd_port < (CVMX_HELPER_BOARD_MGMT_IPD_PORT + 2))
                && cvmx_helper_board_get_mii_address(ipd_port) >= 0 && cvmx_helper_board_get_mii_address(ipd_port) <= 1)
                is_broadcom_phy = 1;
            break;
        case CVMX_BOARD_TYPE_CUST_NB5:
            /* Port 1 on these boards is always Gigabit */
            if (ipd_port == 1)
            {
                result.s.link_up = 1;
                result.s.full_duplex = 1;
                result.s.speed = 1000;
                return result;
            }
            else /* The other port uses a broadcom PHY */
                is_broadcom_phy = 1;
            break;
        case CVMX_BOARD_TYPE_BBGW_REF:
            /* Port 1 on these boards is always Gigabit */
            if (ipd_port == 2)
            {
                /* Port 2 is not hooked up */
                result.u64 = 0;
                return result;
            }
            else
            {
                /* Ports 0 and 1 connect to the switch */
                result.s.link_up = 1;
                result.s.full_duplex = 1;
                result.s.speed = 1000;
                return result;
            }
            break;
	/* Private vendor-defined boards.  */
#if defined(OCTEON_VENDOR_LANNER)
	case CVMX_BOARD_TYPE_CUST_LANNER_MR730:
	    /* Ports are BCM5482S */
	    is_broadcom_phy = 1;
	    break;
	case CVMX_BOARD_TYPE_CUST_LANNER_MR320:
	case CVMX_BOARD_TYPE_CUST_LANNER_MR321X:
	    /* Port 0 connects to the switch */
	    if (ipd_port == 0)
	    {
                result.s.link_up = 1;
                result.s.full_duplex = 1;
                result.s.speed = 1000;
		return result;
	    }
	    break;
#endif
    }
#endif

    phy_addr = cvmx_helper_board_get_mii_address(ipd_port);
    if (phy_addr != -1)
    {
        if (is_broadcom_phy)
        {
            /* Below we are going to read SMI/MDIO register 0x19 which works
                on Broadcom parts */
            int phy_status = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, 0x19);
            switch ((phy_status>>8) & 0x7)
            {
                case 0:
                    result.u64 = 0;
                    break;
                case 1:
                    result.s.link_up = 1;
                    result.s.full_duplex = 0;
                    result.s.speed = 10;
                    break;
                case 2:
                    result.s.link_up = 1;
                    result.s.full_duplex = 1;
                    result.s.speed = 10;
                    break;
                case 3:
                    result.s.link_up = 1;
                    result.s.full_duplex = 0;
                    result.s.speed = 100;
                    break;
                case 4:
                    result.s.link_up = 1;
                    result.s.full_duplex = 1;
                    result.s.speed = 100;
                    break;
                case 5:
                    result.s.link_up = 1;
                    result.s.full_duplex = 1;
                    result.s.speed = 100;
                    break;
                case 6:
                    result.s.link_up = 1;
                    result.s.full_duplex = 0;
                    result.s.speed = 1000;
                    break;
                case 7:
                    result.s.link_up = 1;
                    result.s.full_duplex = 1;
                    result.s.speed = 1000;
                    break;
            }
        }
        else
        {
            /* This code assumes we are using a Marvell Gigabit PHY. All the
                speed information can be read from register 17 in one go. Somebody
                using a different PHY will need to handle it above in the board
                specific area */
            int phy_status = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, 17);

            /* If the resolve bit 11 isn't set, see if autoneg is turned off
                (bit 12, reg 0). The resolve bit doesn't get set properly when
                autoneg is off, so force it */
            if ((phy_status & (1<<11)) == 0)
            {
                int auto_status = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, 0);
                if ((auto_status & (1<<12)) == 0)
                    phy_status |= 1<<11;
            }

            /* Only return a link if the PHY has finished auto negotiation
                and set the resolved bit (bit 11) */
            if (phy_status & (1<<11))
            {
#if defined(OCTEON_BOARD_CAPK_0100ND)
                result.s.link_up = (phy_status>>10)&1;
#else
                result.s.link_up = 1;
#endif
                result.s.full_duplex = ((phy_status>>13)&1);
                switch ((phy_status>>14)&3)
                {
                    case 0: /* 10 Mbps */
                        result.s.speed = 10;
                        break;
                    case 1: /* 100 Mbps */
                        result.s.speed = 100;
                        break;
                    case 2: /* 1 Gbps */
                        result.s.speed = 1000;
                        break;
                    case 3: /* Illegal */
                        result.u64 = 0;
                        break;
                }
            }
        }
    }
    else if (OCTEON_IS_MODEL(OCTEON_CN3XXX) || OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN50XX))
    {
        /* We don't have a PHY address, so attempt to use in-band status. It is
            really important that boards not supporting in-band status never get
            here. Reading broken in-band status tends to do bad things */
        cvmx_gmxx_rxx_rx_inbnd_t inband_status;
        int interface = cvmx_helper_get_interface_num(ipd_port);
        int index = cvmx_helper_get_interface_index_num(ipd_port);
        inband_status.u64 = cvmx_read_csr(CVMX_GMXX_RXX_RX_INBND(index, interface));

        result.s.link_up = inband_status.s.status;
        result.s.full_duplex = inband_status.s.duplex;
        switch (inband_status.s.speed)
        {
            case 0: /* 10 Mbps */
                result.s.speed = 10;
                break;
            case 1: /* 100 Mbps */
                result.s.speed = 100;
                break;
            case 2: /* 1 Gbps */
                result.s.speed = 1000;
                break;
            case 3: /* Illegal */
                result.u64 = 0;
                break;
        }
    }
    else
    {
        /* We don't have a PHY address and we don't have in-band status. There
            is no way to determine the link speed. Return down assuming this
            port isn't wired */
        result.u64 = 0;
    }

    /* If link is down, return all fields as zero. */
    if (!result.s.link_up)
        result.u64 = 0;

    return result;
}


/**
 * This function as a board specific method of changing the PHY
 * speed, duplex, and autonegotiation. This programs the PHY and
 * not Octeon. This can be used to force Octeon's links to
 * specific settings.
 *
 * @param phy_addr  The address of the PHY to program
 * @param link_flags
 *                  Flags to control autonegotiation.  Bit 0 is autonegotiation
 *                  enable/disable to maintain backward compatibility.
 * @param link_info Link speed to program. If the speed is zero and autonegotiation
 *                  is enabled, all possible negotiation speeds are advertised.
 *
 * @return Zero on success, negative on failure
 */
int cvmx_helper_board_link_set_phy(int phy_addr, cvmx_helper_board_set_phy_link_flags_types_t link_flags,
                                   cvmx_helper_link_info_t link_info)
{

    /* Set the flow control settings based on link_flags */
    if ((link_flags & set_phy_link_flags_flow_control_mask) != set_phy_link_flags_flow_control_dont_touch)
    {
        cvmx_mdio_phy_reg_autoneg_adver_t reg_autoneg_adver;
        reg_autoneg_adver.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_AUTONEG_ADVER);
        reg_autoneg_adver.s.asymmetric_pause = (link_flags & set_phy_link_flags_flow_control_mask) == set_phy_link_flags_flow_control_enable;
        reg_autoneg_adver.s.pause = (link_flags & set_phy_link_flags_flow_control_mask) == set_phy_link_flags_flow_control_enable;
        cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_AUTONEG_ADVER, reg_autoneg_adver.u16);
    }

    /* If speed isn't set and autoneg is on advertise all supported modes */
    if ((link_flags & set_phy_link_flags_autoneg) && (link_info.s.speed == 0))
    {
        cvmx_mdio_phy_reg_control_t reg_control;
        cvmx_mdio_phy_reg_status_t reg_status;
        cvmx_mdio_phy_reg_autoneg_adver_t reg_autoneg_adver;
        cvmx_mdio_phy_reg_extended_status_t reg_extended_status;
        cvmx_mdio_phy_reg_control_1000_t reg_control_1000;

        reg_status.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_STATUS);
        reg_autoneg_adver.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_AUTONEG_ADVER);
        reg_autoneg_adver.s.advert_100base_t4 = reg_status.s.capable_100base_t4;
        reg_autoneg_adver.s.advert_10base_tx_full = reg_status.s.capable_10_full;
        reg_autoneg_adver.s.advert_10base_tx_half = reg_status.s.capable_10_half;
        reg_autoneg_adver.s.advert_100base_tx_full = reg_status.s.capable_100base_x_full;
        reg_autoneg_adver.s.advert_100base_tx_half = reg_status.s.capable_100base_x_half;
        cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_AUTONEG_ADVER, reg_autoneg_adver.u16);
        if (reg_status.s.capable_extended_status)
        {
            reg_extended_status.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_EXTENDED_STATUS);
            reg_control_1000.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL_1000);
            reg_control_1000.s.advert_1000base_t_full = reg_extended_status.s.capable_1000base_t_full;
            reg_control_1000.s.advert_1000base_t_half = reg_extended_status.s.capable_1000base_t_half;
            cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL_1000, reg_control_1000.u16);
        }
        reg_control.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL);
        reg_control.s.autoneg_enable = 1;
        reg_control.s.restart_autoneg = 1;
        cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL, reg_control.u16);
    }
    else if ((link_flags & set_phy_link_flags_autoneg))
    {
        cvmx_mdio_phy_reg_control_t reg_control;
        cvmx_mdio_phy_reg_status_t reg_status;
        cvmx_mdio_phy_reg_autoneg_adver_t reg_autoneg_adver;
        cvmx_mdio_phy_reg_extended_status_t reg_extended_status;
        cvmx_mdio_phy_reg_control_1000_t reg_control_1000;

        reg_status.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_STATUS);
        reg_autoneg_adver.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_AUTONEG_ADVER);
        reg_autoneg_adver.s.advert_100base_t4 = 0;
        reg_autoneg_adver.s.advert_10base_tx_full = 0;
        reg_autoneg_adver.s.advert_10base_tx_half = 0;
        reg_autoneg_adver.s.advert_100base_tx_full = 0;
        reg_autoneg_adver.s.advert_100base_tx_half = 0;
        if (reg_status.s.capable_extended_status)
        {
            reg_extended_status.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_EXTENDED_STATUS);
            reg_control_1000.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL_1000);
            reg_control_1000.s.advert_1000base_t_full = 0;
            reg_control_1000.s.advert_1000base_t_half = 0;
        }
        switch (link_info.s.speed)
        {
            case 10:
                reg_autoneg_adver.s.advert_10base_tx_full = link_info.s.full_duplex;
                reg_autoneg_adver.s.advert_10base_tx_half = !link_info.s.full_duplex;
                break;
            case 100:
                reg_autoneg_adver.s.advert_100base_tx_full = link_info.s.full_duplex;
                reg_autoneg_adver.s.advert_100base_tx_half = !link_info.s.full_duplex;
                break;
            case 1000:
                reg_control_1000.s.advert_1000base_t_full = link_info.s.full_duplex;
                reg_control_1000.s.advert_1000base_t_half = !link_info.s.full_duplex;
                break;
        }
        cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_AUTONEG_ADVER, reg_autoneg_adver.u16);
        if (reg_status.s.capable_extended_status)
            cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL_1000, reg_control_1000.u16);
        reg_control.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL);
        reg_control.s.autoneg_enable = 1;
        reg_control.s.restart_autoneg = 1;
        cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL, reg_control.u16);
    }
    else
    {
        cvmx_mdio_phy_reg_control_t reg_control;
        reg_control.u16 = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL);
        reg_control.s.autoneg_enable = 0;
        reg_control.s.restart_autoneg = 1;
        reg_control.s.duplex = link_info.s.full_duplex;
        if (link_info.s.speed == 1000)
        {
            reg_control.s.speed_msb = 1;
            reg_control.s.speed_lsb = 0;
        }
        else if (link_info.s.speed == 100)
        {
            reg_control.s.speed_msb = 0;
            reg_control.s.speed_lsb = 1;
        }
        else if (link_info.s.speed == 10)
        {
            reg_control.s.speed_msb = 0;
            reg_control.s.speed_lsb = 0;
        }
        cvmx_mdio_write(phy_addr >> 8, phy_addr & 0xff, CVMX_MDIO_PHY_REG_CONTROL, reg_control.u16);
    }
    return 0;
}


/**
 * @INTERNAL
 * This function is called by cvmx_helper_interface_probe() after it
 * determines the number of ports Octeon can support on a specific
 * interface. This function is the per board location to override
 * this value. It is called with the number of ports Octeon might
 * support and should return the number of actual ports on the
 * board.
 *
 * This function must be modified for every new Octeon board.
 * Internally it uses switch statements based on the cvmx_sysinfo
 * data to determine board types and revisions. It relies on the
 * fact that every Octeon board receives a unique board type
 * enumeration from the bootloader.
 *
 * @param interface Interface to probe
 * @param supported_ports
 *                  Number of ports Octeon supports.
 *
 * @return Number of ports the actual board supports. Many times this will
 *         simple be "support_ports".
 */
int __cvmx_helper_board_interface_probe(int interface, int supported_ports)
{
    switch (cvmx_sysinfo_get()->board_type)
    {
        case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
        case CVMX_BOARD_TYPE_LANAI2_A:
        case CVMX_BOARD_TYPE_LANAI2_U:
        case CVMX_BOARD_TYPE_LANAI2_G:
            if (interface == 0)
                return 2;
	    break;
        case CVMX_BOARD_TYPE_BBGW_REF:
            if (interface == 0)
                return 2;
	    break;
        case CVMX_BOARD_TYPE_NIC_XLE_4G:
            if (interface == 0)
                return 0;
	    break;
        /* The 2nd interface on the EBH5600 is connected to the Marvel switch,
            which we don't support. Disable ports connected to it */
        case CVMX_BOARD_TYPE_EBH5600:
            if (interface == 1)
                return 0;
	    break;
        case CVMX_BOARD_TYPE_EBB5600:
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
            if (cvmx_helper_interface_get_mode(interface) == CVMX_HELPER_INTERFACE_MODE_PICMG)
                return 0;
#endif
	    break;
        case CVMX_BOARD_TYPE_EBT5810:
            return 1;  /* Two ports on each SPI: 1 hooked to MAC, 1 loopback
                       ** Loopback disabled by default. */
#if defined(OCTEON_VENDOR_LANNER)
	case CVMX_BOARD_TYPE_CUST_LANNER_MR955:
	    if (interface == 1)
	        return 12;
	    break;
#endif
    }
#ifdef CVMX_BUILD_FOR_UBOOT
    if (CVMX_HELPER_INTERFACE_MODE_SPI == cvmx_helper_interface_get_mode(interface) && getenv("disable_spi"))
        return 0;
#endif
    return supported_ports;
}


/**
 * @INTERNAL
 * Enable packet input/output from the hardware. This function is
 * called after by cvmx_helper_packet_hardware_enable() to
 * perform board specific initialization. For most boards
 * nothing is needed.
 *
 * @param interface Interface to enable
 *
 * @return Zero on success, negative on failure
 */
int __cvmx_helper_board_hardware_enable(int interface)
{
    if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CN3005_EVB_HS5)
    {
        if (interface == 0)
        {
            /* Different config for switch port */
            cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(1, interface), 0);
            cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(1, interface), 0);
            /* Boards with gigabit WAN ports need a different setting that is
                compatible with 100 Mbit settings */
            cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(0, interface), 0xc);
            cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(0, interface), 0xc);
        }
    }
    else if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_LANAI2_U)
    {
        if (interface == 0)
        {
            cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(0, interface), 16);
            cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(0, interface), 16);
        }
    }
    else if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CN3010_EVB_HS5)
    {
        /* Broadcom PHYs require different ASX clocks. Unfortunately
            many customer don't define a new board Id and simply
            mangle the CN3010_EVB_HS5 */
        if (interface == 0)
        {
            /* Some customers boards use a hacked up bootloader that identifies them as
            ** CN3010_EVB_HS5 evaluation boards.  This leads to all kinds of configuration
            ** problems.  Detect one case, and print warning, while trying to do the right thing.
            */
            int phy_addr = cvmx_helper_board_get_mii_address(0);
            if (phy_addr != -1)
            {
                int phy_identifier = cvmx_mdio_read(phy_addr >> 8, phy_addr & 0xff, 0x2);
                /* Is it a Broadcom PHY? */
                if (phy_identifier == 0x0143)
                {
                    cvmx_dprintf("\n");
                    cvmx_dprintf("ERROR:\n");
                    cvmx_dprintf("ERROR: Board type is CVMX_BOARD_TYPE_CN3010_EVB_HS5, but Broadcom PHY found.\n");
                    cvmx_dprintf("ERROR: The board type is mis-configured, and software malfunctions are likely.\n");
                    cvmx_dprintf("ERROR: All boards require a unique board type to identify them.\n");
                    cvmx_dprintf("ERROR:\n");
                    cvmx_dprintf("\n");
                    cvmx_wait(1000000000);
                    cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(0, interface), 5);
                    cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(0, interface), 5);
                }
            }
        }
    }
    return 0;
}


/**
 * @INTERNAL
 * Gets the clock type used for the USB block based on board type.
 * Used by the USB code for auto configuration of clock type.
 *
 * @return USB clock type enumeration
 */
cvmx_helper_board_usb_clock_types_t __cvmx_helper_board_usb_get_clock_type(void)
{
    switch (cvmx_sysinfo_get()->board_type)
    {
        case CVMX_BOARD_TYPE_BBGW_REF:
        case CVMX_BOARD_TYPE_LANAI2_A:
        case CVMX_BOARD_TYPE_LANAI2_U:
        case CVMX_BOARD_TYPE_LANAI2_G:
#if defined(OCTEON_VENDOR_LANNER)
    case CVMX_BOARD_TYPE_CUST_LANNER_MR320:
    case CVMX_BOARD_TYPE_CUST_LANNER_MR321X:
#endif
#if defined(OCTEON_BOARD_CAPK_0100ND)
	case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
#endif
            return USB_CLOCK_TYPE_CRYSTAL_12;
    }
    return USB_CLOCK_TYPE_REF_48;
}


/**
 * @INTERNAL
 * Adjusts the number of available USB ports on Octeon based on board
 * specifics.
 *
 * @param supported_ports expected number of ports based on chip type;
 *
 *
 * @return number of available usb ports, based on board specifics.
 *         Return value is supported_ports if function does not
 *         override.
 */
int __cvmx_helper_board_usb_get_num_ports(int supported_ports)
{
    switch (cvmx_sysinfo_get()->board_type)
    {
        case CVMX_BOARD_TYPE_NIC_XLE_4G:
            return 0;
    }

    return supported_ports;
}