/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 * Copyright (c) 2002-2006 Neterion, Inc.
 */

#include "xgehal-mgmt.h"
#include "xgehal-driver.h"
#include "xgehal-device.h"

/**
 * xge_hal_mgmt_about - Retrieve about info.
 * @devh: HAL device handle.
 * @about_info: Filled in by HAL. See xge_hal_mgmt_about_info_t{}.
 * @size: Size of the @about_info buffer. HAL will return error if the
 *        size is smaller than sizeof(xge_hal_mgmt_about_info_t).
 *
 * Retrieve information such as PCI device and vendor IDs, board
 * revision number, HAL version number, etc.
 *
 * Returns: XGE_HAL_OK - success;
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 * XGE_HAL_FAIL - Failed to retrieve the information.
 *
 * See also: xge_hal_mgmt_about_info_t{}.
 */
xge_hal_status_e
xge_hal_mgmt_about(xge_hal_device_h devh, xge_hal_mgmt_about_info_t *about_info,
                int size)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (size != sizeof(xge_hal_mgmt_about_info_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        xge_os_pci_read16(hldev->pdev, hldev->cfgh,
                xge_offsetof(xge_hal_pci_config_le_t, vendor_id),
                &about_info->vendor);

        xge_os_pci_read16(hldev->pdev, hldev->cfgh,
                xge_offsetof(xge_hal_pci_config_le_t, device_id),
                &about_info->device);

        xge_os_pci_read16(hldev->pdev, hldev->cfgh,
                xge_offsetof(xge_hal_pci_config_le_t, subsystem_vendor_id),
                &about_info->subsys_vendor);

        xge_os_pci_read16(hldev->pdev, hldev->cfgh,
                xge_offsetof(xge_hal_pci_config_le_t, subsystem_id),
                &about_info->subsys_device);

        xge_os_pci_read8(hldev->pdev, hldev->cfgh,
                xge_offsetof(xge_hal_pci_config_le_t, revision),
                &about_info->board_rev);

        xge_os_strlcpy(about_info->vendor_name, XGE_DRIVER_VENDOR,
            sizeof(about_info->vendor_name));

        xge_os_strlcpy(about_info->chip_name, XGE_CHIP_FAMILY,
            sizeof(about_info->chip_name));

        xge_os_strlcpy(about_info->media, XGE_SUPPORTED_MEDIA_0,
            sizeof(about_info->media));

        xge_os_strlcpy(about_info->hal_major, XGE_HAL_VERSION_MAJOR,
            sizeof(about_info->hal_major));

        xge_os_strlcpy(about_info->hal_minor, XGE_HAL_VERSION_MINOR,
            sizeof(about_info->hal_minor));

        xge_os_strlcpy(about_info->hal_fix,   XGE_HAL_VERSION_FIX,
            sizeof(about_info->hal_fix));

        xge_os_strlcpy(about_info->hal_build, XGE_HAL_VERSION_BUILD,
            sizeof(about_info->hal_build));

        xge_os_strlcpy(about_info->ll_major, XGELL_VERSION_MAJOR,
            sizeof(about_info->ll_major));

        xge_os_strlcpy(about_info->ll_minor, XGELL_VERSION_MINOR,
            sizeof(about_info->ll_minor));

        xge_os_strlcpy(about_info->ll_fix,   XGELL_VERSION_FIX,
            sizeof(about_info->ll_fix));

        xge_os_strlcpy(about_info->ll_build, XGELL_VERSION_BUILD,
            sizeof(about_info->ll_build));

        about_info->transponder_temperature =
                xge_hal_read_xfp_current_temp(devh);

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_reg_read - Read Xframe register.
 * @devh: HAL device handle.
 * @bar_id: 0 - for BAR0, 1- for BAR1.
 * @offset: Register offset in the Base Address Register (BAR) space.
 * @value: Register value. Returned by HAL.
 * Read Xframe register.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_INVALID_OFFSET - Register offset in the BAR space is not
 * valid.
 * XGE_HAL_ERR_INVALID_BAR_ID - BAR id is not valid.
 *
 * See also: xge_hal_aux_bar0_read(), xge_hal_aux_bar1_read().
 */
xge_hal_status_e
xge_hal_mgmt_reg_read(xge_hal_device_h devh, int bar_id, unsigned int offset,
                u64 *value)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (bar_id == 0) {
                if (offset > sizeof(xge_hal_pci_bar0_t)-8) {
                        return XGE_HAL_ERR_INVALID_OFFSET;
                }
                *value = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                                             (void *)(hldev->bar0 + offset));
        } else if (bar_id == 1 &&
                   (xge_hal_device_check_id(hldev) == XGE_HAL_CARD_XENA ||
                    xge_hal_device_check_id(hldev) == XGE_HAL_CARD_HERC))  {
                int i;
                for (i=0; i<XGE_HAL_MAX_FIFO_NUM_HERC; i++) {
                        if (offset == i*0x2000 || offset == i*0x2000+0x18) {
                                break;
                        }
                }
                if (i == XGE_HAL_MAX_FIFO_NUM_HERC) {
                        return XGE_HAL_ERR_INVALID_OFFSET;
                }
                *value = xge_os_pio_mem_read64(hldev->pdev, hldev->regh1,
                                             (void *)(hldev->bar1 + offset));
        } else if (bar_id == 1) {
                /* FIXME: check TITAN BAR1 offsets */
                return XGE_HAL_ERR_INVALID_DEVICE;
        } else {
                return XGE_HAL_ERR_INVALID_BAR_ID;
        }

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_reg_write - Write Xframe register.
 * @devh: HAL device handle.
 * @bar_id: 0 - for BAR0, 1- for BAR1.
 * @offset: Register offset in the Base Address Register (BAR) space.
 * @value: Register value.
 *
 * Write Xframe register.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_INVALID_OFFSET - Register offset in the BAR space is not
 * valid.
 * XGE_HAL_ERR_INVALID_BAR_ID - BAR id is not valid.
 *
 * See also: xge_hal_aux_bar0_write().
 */
xge_hal_status_e
xge_hal_mgmt_reg_write(xge_hal_device_h devh, int bar_id, unsigned int offset,
                u64 value)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (bar_id == 0) {
                if (offset > sizeof(xge_hal_pci_bar0_t)-8) {
                        return XGE_HAL_ERR_INVALID_OFFSET;
                }
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, value,
                                     (void *)(hldev->bar0 + offset));
        } else if (bar_id == 1 &&
                   (xge_hal_device_check_id(hldev) == XGE_HAL_CARD_XENA ||
                    xge_hal_device_check_id(hldev) == XGE_HAL_CARD_HERC))  {
                int i;
                for (i=0; i<XGE_HAL_MAX_FIFO_NUM_HERC; i++) {
                        if (offset == i*0x2000 || offset == i*0x2000+0x18) {
                                break;
                        }
                }
                if (i == XGE_HAL_MAX_FIFO_NUM_HERC) {
                        return XGE_HAL_ERR_INVALID_OFFSET;
                }
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh1, value,
                                     (void *)(hldev->bar1 + offset));
        } else if (bar_id == 1) {
                /* FIXME: check TITAN BAR1 offsets */
                return XGE_HAL_ERR_INVALID_DEVICE;
        } else {
                return XGE_HAL_ERR_INVALID_BAR_ID;
        }

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_hw_stats - Get Xframe hardware statistics.
 * @devh: HAL device handle.
 * @hw_stats: Hardware statistics. Returned by HAL.
 *            See xge_hal_stats_hw_info_t{}.
 * @size: Size of the @hw_stats buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_stats_hw_info_t).
 * Get Xframe hardware statistics.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 *
 * See also: xge_hal_mgmt_sw_stats().
 */
xge_hal_status_e
xge_hal_mgmt_hw_stats(xge_hal_device_h devh, xge_hal_mgmt_hw_stats_t *hw_stats,
                int size)
{
        xge_hal_status_e status;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_stats_hw_info_t *hw_info;

        xge_assert(xge_hal_device_check_id(hldev) != XGE_HAL_CARD_TITAN);

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (size != sizeof(xge_hal_stats_hw_info_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        if ((status = xge_hal_stats_hw (devh, &hw_info)) != XGE_HAL_OK) {
                return status;
        }

        xge_os_memcpy(hw_stats, hw_info, sizeof(xge_hal_stats_hw_info_t));

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_hw_stats_off - TBD.
 * @devh: HAL device handle.
 * @off: TBD
 * @size: TBD
 * @out: TBD
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 *
 * See also: xge_hal_mgmt_sw_stats().
 */
xge_hal_status_e
xge_hal_mgmt_hw_stats_off(xge_hal_device_h devh, int off, int size, char *out)
{
        xge_hal_status_e status;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_stats_hw_info_t *hw_info;

        xge_assert(xge_hal_device_check_id(hldev) != XGE_HAL_CARD_TITAN);

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (off > sizeof(xge_hal_stats_hw_info_t)-4 ||
            size > 8) {
                return XGE_HAL_ERR_INVALID_OFFSET;
        }

        if ((status = xge_hal_stats_hw (devh, &hw_info)) != XGE_HAL_OK) {
                return status;
        }

        xge_os_memcpy(out, (char*)hw_info + off, size);

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_pcim_stats - Get Titan hardware statistics.
 * @devh: HAL device handle.
 * @pcim_stats: PCIM statistics. Returned by HAL.
 *            See xge_hal_stats_hw_info_t{}.
 * @size: Size of the @hw_stats buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_stats_hw_info_t).
 * Get Xframe hardware statistics.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 *
 * See also: xge_hal_mgmt_sw_stats().
 */
xge_hal_status_e
xge_hal_mgmt_pcim_stats(xge_hal_device_h devh,
                xge_hal_mgmt_pcim_stats_t *pcim_stats, int size)
{
        xge_hal_status_e status;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_stats_pcim_info_t       *pcim_info;

        xge_assert(xge_hal_device_check_id(hldev) == XGE_HAL_CARD_TITAN);

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (size != sizeof(xge_hal_stats_pcim_info_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        if ((status = xge_hal_stats_pcim (devh, &pcim_info)) != XGE_HAL_OK) {
                return status;
        }

        xge_os_memcpy(pcim_stats, pcim_info,
                sizeof(xge_hal_stats_pcim_info_t));

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_pcim_stats_off - TBD.
 * @devh: HAL device handle.
 * @off: TBD
 * @size: TBD
 * @out: TBD
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 *
 * See also: xge_hal_mgmt_sw_stats().
 */
xge_hal_status_e
xge_hal_mgmt_pcim_stats_off(xge_hal_device_h devh, int off, int size,
                            char *out)
{
        xge_hal_status_e status;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_stats_pcim_info_t       *pcim_info;

        xge_assert(xge_hal_device_check_id(hldev) == XGE_HAL_CARD_TITAN);

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (off > sizeof(xge_hal_stats_pcim_info_t)-8 ||
            size > 8) {
                return XGE_HAL_ERR_INVALID_OFFSET;
        }

        if ((status = xge_hal_stats_pcim (devh, &pcim_info)) != XGE_HAL_OK) {
                return status;
        }

        xge_os_memcpy(out, (char*)pcim_info + off, size);

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_sw_stats - Get per-device software statistics.
 * @devh: HAL device handle.
 * @sw_stats: Hardware statistics. Returned by HAL.
 *            See xge_hal_stats_sw_err_t{}.
 * @size: Size of the @sw_stats buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_stats_sw_err_t).
 * Get device software statistics, including ECC and Parity error
 * counters, etc.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 *
 * See also: xge_hal_stats_sw_err_t{}, xge_hal_mgmt_hw_stats().
 */
xge_hal_status_e
xge_hal_mgmt_sw_stats(xge_hal_device_h devh, xge_hal_mgmt_sw_stats_t *sw_stats,
                int size)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (size != sizeof(xge_hal_stats_sw_err_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        if (!hldev->stats.is_initialized ||
            !hldev->stats.is_enabled) {
                return XGE_HAL_INF_STATS_IS_NOT_READY;
        }

        /* Updating xpak stats value */
        __hal_updt_stats_xpak(hldev);

        xge_os_memcpy(sw_stats, &hldev->stats.sw_dev_err_stats,
                    sizeof(xge_hal_stats_sw_err_t));

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_device_stats - Get HAL device statistics.
 * @devh: HAL device handle.
 * @device_stats: HAL device "soft" statistics. Maintained by HAL itself.
 *            (as opposed to xge_hal_mgmt_hw_stats() - those are
 *            maintained by the Xframe hardware).
 *            Returned by HAL.
 *            See xge_hal_stats_device_info_t{}.
 * @size: Size of the @device_stats buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_stats_device_info_t).
 *
 * Get HAL (layer) statistic counters.
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 * XGE_HAL_INF_STATS_IS_NOT_READY - Statistics information is not
 * currently available.
 *
 */
xge_hal_status_e
xge_hal_mgmt_device_stats(xge_hal_device_h devh,
                xge_hal_mgmt_device_stats_t *device_stats, int size)
{
        xge_hal_status_e status;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_stats_device_info_t *device_info;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (size != sizeof(xge_hal_stats_device_info_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        if ((status = xge_hal_stats_device (devh, &device_info)) !=
        XGE_HAL_OK) {
                return status;
        }

        xge_os_memcpy(device_stats, device_info,
                    sizeof(xge_hal_stats_device_info_t));

        return XGE_HAL_OK;
}

/*
 * __hal_update_ring_bump - Update the ring bump counter for the
 * particular channel.
 * @hldev: HAL device handle.
 * @queue: the queue who's data is to be collected.
 * @chinfo: pointer to the statistics structure of the given channel.
 * Usage: See xge_hal_aux_stats_hal_read{}
 */

static void
__hal_update_ring_bump(xge_hal_device_t *hldev, int queue,
        xge_hal_stats_channel_info_t *chinfo)
{
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 rbc = 0;
        int reg = (queue / 4);
        void * addr;

        addr = (reg == 1)? (&bar0->ring_bump_counter2) :
                (&bar0->ring_bump_counter1);
        rbc = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0, addr);
        chinfo->ring_bump_cnt = XGE_HAL_RING_BUMP_CNT(queue, rbc);
}

/**
 * xge_hal_mgmt_channel_stats - Get HAL channel statistics.
 * @channelh: HAL channel handle.
 * @channel_stats: HAL channel statistics. Maintained by HAL itself
 *            (as opposed to xge_hal_mgmt_hw_stats() - those are
 *            maintained by the Xframe hardware).
 *            Returned by HAL.
 *            See xge_hal_stats_channel_info_t{}.
 * @size: Size of the @channel_stats buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_mgmt_channel_stats_t).
 *
 * Get HAL per-channel statistic counters.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 * XGE_HAL_INF_STATS_IS_NOT_READY - Statistics information is not
 * currently available.
 *
 */
xge_hal_status_e
xge_hal_mgmt_channel_stats(xge_hal_channel_h channelh,
                xge_hal_mgmt_channel_stats_t *channel_stats, int size)
{
        xge_hal_status_e status;
        xge_hal_stats_channel_info_t *channel_info;
        xge_hal_channel_t *channel = (xge_hal_channel_t* ) channelh;

        if (size != sizeof(xge_hal_stats_channel_info_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        if ((status = xge_hal_stats_channel (channelh, &channel_info)) !=
                                                                XGE_HAL_OK) {
                return status;
        }

        if (xge_hal_device_check_id(channel->devh) == XGE_HAL_CARD_HERC) {
        __hal_update_ring_bump( (xge_hal_device_t *) channel->devh, channel->post_qid, channel_info);
        }

        xge_os_memcpy(channel_stats, channel_info,
                    sizeof(xge_hal_stats_channel_info_t));

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_pcireg_read - Read PCI configuration at a specified
 * offset.
 * @devh: HAL device handle.
 * @offset: Offset in the 256 byte PCI configuration space.
 * @value_bits: 8, 16, or 32 (bits) to read.
 * @value: Value returned by HAL.
 *
 * Read PCI configuration, given device and offset in the PCI space.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_INVALID_OFFSET - Register offset in the BAR space is not
 * valid.
 * XGE_HAL_ERR_INVALID_VALUE_BIT_SIZE - Invalid bits size. Valid
 * values(8/16/32).
 *
 */
xge_hal_status_e
xge_hal_mgmt_pcireg_read(xge_hal_device_h devh, unsigned int offset,
                int value_bits, u32 *value)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (offset > sizeof(xge_hal_pci_config_t)-value_bits/8) {
                return XGE_HAL_ERR_INVALID_OFFSET;
        }

        if (value_bits == 8) {
                xge_os_pci_read8(hldev->pdev, hldev->cfgh, offset, (u8*)value);
        } else if (value_bits == 16) {
                xge_os_pci_read16(hldev->pdev, hldev->cfgh, offset,
                (u16*)value);
        } else if (value_bits == 32) {
                xge_os_pci_read32(hldev->pdev, hldev->cfgh, offset, value);
        } else {
                return XGE_HAL_ERR_INVALID_VALUE_BIT_SIZE;
        }

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_device_config - Retrieve device configuration.
 * @devh: HAL device handle.
 * @dev_config: Device configuration, see xge_hal_device_config_t{}.
 * @size: Size of the @dev_config buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_mgmt_device_config_t).
 *
 * Get device configuration. Permits to retrieve at run-time configuration
 * values that were used to initialize and configure the device.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 *
 * See also: xge_hal_device_config_t{}, xge_hal_mgmt_driver_config().
 */
xge_hal_status_e
xge_hal_mgmt_device_config(xge_hal_device_h devh,
                xge_hal_mgmt_device_config_t    *dev_config, int size)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (size != sizeof(xge_hal_mgmt_device_config_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        xge_os_memcpy(dev_config, &hldev->config,
        sizeof(xge_hal_device_config_t));

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_driver_config - Retrieve driver configuration.
 * @drv_config: Device configuration, see xge_hal_driver_config_t{}.
 * @size: Size of the @dev_config buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_mgmt_driver_config_t).
 *
 * Get driver configuration. Permits to retrieve at run-time configuration
 * values that were used to configure the device at load-time.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_DRIVER_NOT_INITIALIZED - HAL is not initialized.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version is not maching.
 *
 * See also: xge_hal_driver_config_t{}, xge_hal_mgmt_device_config().
 */
xge_hal_status_e
xge_hal_mgmt_driver_config(xge_hal_mgmt_driver_config_t *drv_config, int size)
{

        if (g_xge_hal_driver == NULL) {
                return XGE_HAL_ERR_DRIVER_NOT_INITIALIZED;
        }

        if (size != sizeof(xge_hal_mgmt_driver_config_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        xge_os_memcpy(drv_config, &g_xge_hal_driver->config,
                    sizeof(xge_hal_mgmt_driver_config_t));

        return XGE_HAL_OK;
}

/**
 * xge_hal_mgmt_pci_config - Retrieve PCI configuration.
 * @devh: HAL device handle.
 * @pci_config: 256 byte long buffer for PCI configuration space.
 * @size: Size of the @ buffer. HAL will return an error
 * if the size is smaller than sizeof(xge_hal_mgmt_pci_config_t).
 *
 * Get PCI configuration. Permits to retrieve at run-time configuration
 * values that were used to configure the device at load-time.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_ERR_INVALID_DEVICE - Device is not valid.
 * XGE_HAL_ERR_VERSION_CONFLICT - Version it not maching.
 *
 */
xge_hal_status_e
xge_hal_mgmt_pci_config(xge_hal_device_h devh,
                xge_hal_mgmt_pci_config_t *pci_config, int size)
{
        int i;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;

        if ((hldev == NULL) || (hldev->magic != XGE_HAL_MAGIC)) {
                return XGE_HAL_ERR_INVALID_DEVICE;
        }

        if (size != sizeof(xge_hal_mgmt_pci_config_t)) {
                return XGE_HAL_ERR_VERSION_CONFLICT;
        }

        /* refresh PCI config space */
        for (i = 0; i < 0x68/4+1; i++) {
                xge_os_pci_read32(hldev->pdev, hldev->cfgh, i*4,
                                (u32*)&hldev->pci_config_space + i);
        }

        xge_os_memcpy(pci_config, &hldev->pci_config_space,
                    sizeof(xge_hal_mgmt_pci_config_t));

        return XGE_HAL_OK;
}

#ifdef XGE_TRACE_INTO_CIRCULAR_ARR
/**
 * xge_hal_mgmt_trace_read - Read trace buffer contents.
 * @buffer: Buffer to store the trace buffer contents.
 * @buf_size: Size of the buffer.
 * @offset: Offset in the internal trace buffer to read data.
 * @read_length: Size of the valid data in the buffer.
 *
 * Read  HAL trace buffer contents starting from the offset
 * upto the size of the buffer or till EOF is reached.
 *
 * Returns: XGE_HAL_OK - success.
 * XGE_HAL_EOF_TRACE_BUF - No more data in the trace buffer.
 *
 */
xge_hal_status_e
xge_hal_mgmt_trace_read (char           *buffer,
                        unsigned        buf_size,
                        unsigned        *offset,
                        unsigned        *read_length)
{
        int data_offset;
        int start_offset;

        if ((g_xge_os_tracebuf == NULL) ||
                (g_xge_os_tracebuf->offset == g_xge_os_tracebuf->size - 2)) {
                return XGE_HAL_EOF_TRACE_BUF;
        }

        data_offset = g_xge_os_tracebuf->offset + 1;

        if  (*offset >= (unsigned)xge_os_strlen(g_xge_os_tracebuf->data +
        data_offset)) {

                return XGE_HAL_EOF_TRACE_BUF;
        }

        xge_os_memzero(buffer, buf_size);

        start_offset  =  data_offset + *offset;
        *read_length = xge_os_strlen(g_xge_os_tracebuf->data +
        start_offset);

        if (*read_length  >=  buf_size) {
                *read_length = buf_size - 1;
        }

        xge_os_memcpy(buffer, g_xge_os_tracebuf->data + start_offset,
        *read_length);

        *offset += *read_length;
        (*read_length) ++;

        return XGE_HAL_OK;
}

#endif

/**
 * xge_hal_restore_link_led - Restore link LED to its original state.
 * @devh: HAL device handle.
 */
void
xge_hal_restore_link_led(xge_hal_device_h devh)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64;

        /*
         * If the current link state is UP, switch on LED else make it
         * off.
         */

        /*
         * For Xena 3 and lower revision cards, adapter control needs to be
         * used for making LED ON/OFF.
         */
        if ((xge_hal_device_check_id(hldev) == XGE_HAL_CARD_XENA) &&
           (xge_hal_device_rev(hldev) <= 3)) {
                val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                                              &bar0->adapter_control);
                if (hldev->link_state == XGE_HAL_LINK_UP) {
                        val64 |= XGE_HAL_ADAPTER_LED_ON;
                } else {
                        val64 &= ~XGE_HAL_ADAPTER_LED_ON;
                }

                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                                        &bar0->adapter_control);
                return;
        }

        /*
         * Use beacon control register to control the LED.
         * LED link output corresponds to bit 8 of the beacon control
         * register. Note that, in the case of Xena, beacon control register
         * represents the gpio control register. In the case of Herc, LED
         * handling is done by beacon control register as opposed to gpio
         * control register in Xena. Beacon control is used only to toggle
     * and the value written into it does not depend on the link state.
     * It is upto the ULD to toggle the LED even number of times which
     * brings the LED to it's original state.
         */
        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                                      &bar0->beacon_control);
    val64 |= 0x0000800000000000ULL;
    xge_os_pio_mem_write64(hldev->pdev, hldev->regh0,
                       val64, &bar0->beacon_control);
}

/**
 * xge_hal_flick_link_led - Flick (blink) link LED.
 * @devh: HAL device handle.
 *
 * Depending on the card revision flicker the link LED by using the
 * beacon control or the adapter_control register.
 */
void
xge_hal_flick_link_led(xge_hal_device_h devh)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64 = 0;

        /*
         * For Xena 3 and lower revision cards, adapter control needs to be
         * used for making LED ON/OFF.
         */
        if ((xge_hal_device_check_id(hldev) == XGE_HAL_CARD_XENA) &&
           (xge_hal_device_rev(hldev) <= 3)) {
                val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                                              &bar0->adapter_control);
                val64 ^= XGE_HAL_ADAPTER_LED_ON;
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                                        &bar0->adapter_control);
                return;
        }

        /*
         * Use beacon control register to control the Link LED.
         * Note that, in the case of Xena, beacon control register represents
         * the gpio control register. In the case of Herc, LED handling is
         * done by beacon control register as opposed to gpio control register
         * in Xena.
         */
        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                                      &bar0->beacon_control);
        val64 ^= XGE_HAL_GPIO_CTRL_GPIO_0;
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                               &bar0->beacon_control);
}

/**
 * xge_hal_read_eeprom - Read 4 bytes of data from user given offset.
 * @devh: HAL device handle.
 * @off: offset at which the data must be written
 * @data: output parameter where the data is stored.
 *
 * Read 4 bytes of data from the user given offset and return the
 * read data.
 * Note: will allow to read only part of the EEPROM visible through the
 * I2C bus.
 * Returns: -1 on failure, 0 on success.
 */
xge_hal_status_e
xge_hal_read_eeprom(xge_hal_device_h devh, int off, u32* data)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_status_e ret = XGE_HAL_FAIL;
        u32 exit_cnt = 0;
        u64 val64;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;

        val64 = XGE_HAL_I2C_CONTROL_DEV_ID(XGE_DEV_ID) |
                XGE_HAL_I2C_CONTROL_ADDR(off) |
                XGE_HAL_I2C_CONTROL_BYTE_CNT(0x3) |
                XGE_HAL_I2C_CONTROL_READ | XGE_HAL_I2C_CONTROL_CNTL_START;

        __hal_serial_mem_write64(hldev, val64, &bar0->i2c_control);

        while (exit_cnt < 5) {
                val64 = __hal_serial_mem_read64(hldev, &bar0->i2c_control);
                if (XGE_HAL_I2C_CONTROL_CNTL_END(val64)) {
                        *data = XGE_HAL_I2C_CONTROL_GET_DATA(val64);
                        ret = XGE_HAL_OK;
                        break;
                }
                exit_cnt++;
        }

        return ret;
}

/*
 * xge_hal_write_eeprom - actually writes the relevant part of the data
 value.
 * @devh: HAL device handle.
 * @off: offset at which the data must be written
 * @data : The data that is to be written
 * @cnt : Number of bytes of the data that are actually to be written into
 * the Eeprom. (max of 3)
 *
 * Actually writes the relevant part of the data value into the Eeprom
 * through the I2C bus.
 * Return value:
 * 0 on success, -1 on failure.
 */

xge_hal_status_e
xge_hal_write_eeprom(xge_hal_device_h devh, int off, u32 data, int cnt)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_status_e ret = XGE_HAL_FAIL;
        u32 exit_cnt = 0;
        u64 val64;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;

        val64 = XGE_HAL_I2C_CONTROL_DEV_ID(XGE_DEV_ID) |
                XGE_HAL_I2C_CONTROL_ADDR(off) |
                XGE_HAL_I2C_CONTROL_BYTE_CNT(cnt) |
                XGE_HAL_I2C_CONTROL_SET_DATA(data) |
                XGE_HAL_I2C_CONTROL_CNTL_START;
        __hal_serial_mem_write64(hldev, val64, &bar0->i2c_control);

        while (exit_cnt < 5) {
                val64 = __hal_serial_mem_read64(hldev, &bar0->i2c_control);
                if (XGE_HAL_I2C_CONTROL_CNTL_END(val64)) {
                        if (!(val64 & XGE_HAL_I2C_CONTROL_NACK))
                                ret = XGE_HAL_OK;
                        break;
                }
                exit_cnt++;
        }

        return ret;
}

/*
 * xge_hal_register_test - reads and writes into all clock domains.
 * @hldev : private member of the device structure.
 * xge_nic structure.
 * @data : variable that returns the result of each of the test conducted b
 * by the driver.
 *
 * Read and write into all clock domains. The NIC has 3 clock domains,
 * see that registers in all the three regions are accessible.
 * Return value:
 * 0 on success.
 */
xge_hal_status_e
xge_hal_register_test(xge_hal_device_h devh, u64 *data)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64 = 0;
        int fail = 0;

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->pif_rd_swapper_fb);
        if (val64 != 0x123456789abcdefULL) {
                fail = 1;
                xge_debug_osdep(XGE_TRACE, "Read Test level 1 fails");
        }

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->rmac_pause_cfg);
        if (val64 != 0xc000ffff00000000ULL) {
                fail = 1;
                xge_debug_osdep(XGE_TRACE, "Read Test level 2 fails");
        }

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->rx_queue_cfg);
        if (val64 != 0x0808080808080808ULL) {
                fail = 1;
                xge_debug_osdep(XGE_TRACE, "Read Test level 3 fails");
        }

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->xgxs_efifo_cfg);
        if (val64 != 0x000000001923141EULL) {
                fail = 1;
                xge_debug_osdep(XGE_TRACE, "Read Test level 4 fails");
        }

        val64 = 0x5A5A5A5A5A5A5A5AULL;
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->xmsi_data);
        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->xmsi_data);
        if (val64 != 0x5A5A5A5A5A5A5A5AULL) {
                fail = 1;
                xge_debug_osdep(XGE_ERR, "Write Test level 1 fails");
        }

        val64 = 0xA5A5A5A5A5A5A5A5ULL;
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->xmsi_data);
        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->xmsi_data);
        if (val64 != 0xA5A5A5A5A5A5A5A5ULL) {
                fail = 1;
                xge_debug_osdep(XGE_ERR, "Write Test level 2 fails");
        }

        *data = fail;
        return XGE_HAL_OK;
}

/*
 * xge_hal_rldram_test - offline test for access to the RldRam chip on
 the NIC
 * @devh: HAL device handle.
 * @data: variable that returns the result of each of the test
 * conducted by the driver.
 *
 * This is one of the offline test that tests the read and write
 * access to the RldRam chip on the NIC.
 * Return value:
 * 0 on success.
 */
xge_hal_status_e
xge_hal_rldram_test(xge_hal_device_h devh, u64 *data)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64;
        int cnt, iteration = 0, test_pass = 0;

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->adapter_control);
        val64 &= ~XGE_HAL_ADAPTER_ECC_EN;
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->adapter_control);

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->mc_rldram_test_ctrl);
        val64 |= XGE_HAL_MC_RLDRAM_TEST_MODE;
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_ctrl);

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->mc_rldram_mrs);
        val64 |= XGE_HAL_MC_RLDRAM_QUEUE_SIZE_ENABLE;
        __hal_serial_mem_write64(hldev, val64, &bar0->i2c_control);

        val64 |= XGE_HAL_MC_RLDRAM_MRS_ENABLE;
        __hal_serial_mem_write64(hldev, val64, &bar0->i2c_control);

        while (iteration < 2) {
                val64 = 0x55555555aaaa0000ULL;
                if (iteration == 1) {
                        val64 ^= 0xFFFFFFFFFFFF0000ULL;
                }
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_d0);

                val64 = 0xaaaa5a5555550000ULL;
                if (iteration == 1) {
                        val64 ^= 0xFFFFFFFFFFFF0000ULL;
                }
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_d1);

                val64 = 0x55aaaaaaaa5a0000ULL;
                if (iteration == 1) {
                        val64 ^= 0xFFFFFFFFFFFF0000ULL;
                }
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_d2);

                val64 = (u64) (0x0000003fffff0000ULL);
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_add);


                val64 = XGE_HAL_MC_RLDRAM_TEST_MODE;
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_ctrl);

                val64 |=
                    XGE_HAL_MC_RLDRAM_TEST_MODE | XGE_HAL_MC_RLDRAM_TEST_WRITE |
                    XGE_HAL_MC_RLDRAM_TEST_GO;
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_ctrl);

                for (cnt = 0; cnt < 5; cnt++) {
                        val64 = xge_os_pio_mem_read64(hldev->pdev,
                                hldev->regh0, &bar0->mc_rldram_test_ctrl);
                        if (val64 & XGE_HAL_MC_RLDRAM_TEST_DONE)
                                break;
                        xge_os_mdelay(200);
                }

                if (cnt == 5)
                        break;

                val64 = XGE_HAL_MC_RLDRAM_TEST_MODE;
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_ctrl);

                val64 |= XGE_HAL_MC_RLDRAM_TEST_MODE |
                XGE_HAL_MC_RLDRAM_TEST_GO;
                xge_os_pio_mem_write64(hldev->pdev, hldev->regh0, val64,
                        &bar0->mc_rldram_test_ctrl);

                for (cnt = 0; cnt < 5; cnt++) {
                        val64 = xge_os_pio_mem_read64(hldev->pdev,
                                hldev->regh0, &bar0->mc_rldram_test_ctrl);
                        if (val64 & XGE_HAL_MC_RLDRAM_TEST_DONE)
                                break;
                        xge_os_mdelay(500);
                }

                if (cnt == 5)
                        break;

                val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->mc_rldram_test_ctrl);
                if (val64 & XGE_HAL_MC_RLDRAM_TEST_PASS)
                        test_pass = 1;

                iteration++;
        }

        if (!test_pass)
                *data = 1;
        else
                *data = 0;

        return XGE_HAL_OK;
}

/*
 * xge_hal_pma_loopback - Enable or disable PMA loopback
 * @devh: HAL device handle.
 * @enable:Boolean set to 1 to enable and 0 to disable.
 *
 * Enable or disable PMA loopback.
 * Return value:
 * 0 on success.
 */
xge_hal_status_e
xge_hal_pma_loopback( xge_hal_device_h devh, int enable )
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64;
        u16 data;

        /*
         * This code if for MAC loopbak
         * Should be enabled through another parameter
         */
#if 0
        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
        &bar0->mac_cfg);
    if ( enable )
    {
        val64 |= ( XGE_HAL_MAC_CFG_TMAC_LOOPBACK | XGE_HAL_MAC_CFG_RMAC_PROM_ENABLE );
    }
        __hal_pio_mem_write32_upper(hldev->pdev, hldev->regh0,
                    (u32)(val64 >> 32), (char*)&bar0->mac_cfg);
        xge_os_mdelay(1);
#endif

        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(0)  |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(1)   |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                XGE_HAL_MDIO_CONTROL_MMD_CTRL(0)       |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_ADDRESS);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(0)  |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(1)   |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                XGE_HAL_MDIO_CONTROL_MMD_CTRL(0)       |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_READ);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 = __hal_serial_mem_read64(hldev, &bar0->mdio_control);

        data = (u16)XGE_HAL_MDIO_CONTROL_MMD_DATA_GET(val64);

#define _HAL_LOOPBK_PMA         1

        if( enable )
                data |= 1;
        else
                data &= 0xfe;

        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(0)  |
                 XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(1)   |
                 XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                 XGE_HAL_MDIO_CONTROL_MMD_CTRL(0)       |
                 XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_ADDRESS);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(0)  |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(1)   |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                XGE_HAL_MDIO_CONTROL_MMD_DATA(data)    |
                XGE_HAL_MDIO_CONTROL_MMD_CTRL(0x0)     |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_WRITE);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(0)  |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(1)   |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                XGE_HAL_MDIO_CONTROL_MMD_CTRL(0x0)     |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_READ);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

    return XGE_HAL_OK;
}

u16
xge_hal_mdio_read( xge_hal_device_h devh, u32 mmd_type, u64 addr )
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64 = 0x0;
        u16 rval16 = 0x0;
        u8  i = 0;

        /* address transaction */
        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(addr)  |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(mmd_type)   |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_ADDRESS);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);
        do
        {
                val64 = __hal_serial_mem_read64(hldev, &bar0->mdio_control);
                if (i++ > 10)
                {
                        break;
                }
        }while((val64 & XGE_HAL_MDIO_CONTROL_MMD_CTRL(0xF)) != XGE_HAL_MDIO_CONTROL_MMD_CTRL(1));

        /* Data transaction */
        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(addr)  |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(mmd_type)   |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_READ);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        i = 0;

        do
        {
                val64 = __hal_serial_mem_read64(hldev, &bar0->mdio_control);
                if (i++ > 10)
                {
                        break;
                }
        }while((val64 & XGE_HAL_MDIO_CONTROL_MMD_CTRL(0xF)) != XGE_HAL_MDIO_CONTROL_MMD_CTRL(1));

        rval16 = (u16)XGE_HAL_MDIO_CONTROL_MMD_DATA_GET(val64);

        return rval16;
}

xge_hal_status_e
xge_hal_mdio_write( xge_hal_device_h devh, u32 mmd_type, u64 addr, u32 value )
{
        u64 val64 = 0x0;
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u8  i = 0;
        /* address transaction */

        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(addr)  |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(mmd_type)   |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)   |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_ADDRESS);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        do
        {
                val64 = __hal_serial_mem_read64(hldev, &bar0->mdio_control);
                if (i++ > 10)
                {
                        break;
                }
        } while((val64 & XGE_HAL_MDIO_CONTROL_MMD_CTRL(0xF)) !=
                XGE_HAL_MDIO_CONTROL_MMD_CTRL(1));

        /* Data transaction */

        val64 = 0x0;

        val64 = XGE_HAL_MDIO_CONTROL_MMD_INDX_ADDR(addr)    |
                XGE_HAL_MDIO_CONTROL_MMD_DEV_ADDR(mmd_type) |
                XGE_HAL_MDIO_CONTROL_MMD_PRT_ADDR(0)        |
                XGE_HAL_MDIO_CONTROL_MMD_DATA(value)        |
                XGE_HAL_MDIO_CONTROL_MMD_OP(XGE_HAL_MDIO_OP_WRITE);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        val64 |= XGE_HAL_MDIO_CONTROL_MMD_CTRL(XGE_HAL_MDIO_CTRL_START);
        __hal_serial_mem_write64(hldev, val64, &bar0->mdio_control);

        i = 0;

        do
        {
                val64 = __hal_serial_mem_read64(hldev, &bar0->mdio_control);
                if (i++ > 10)
                {
                        break;
                }
        }while((val64 & XGE_HAL_MDIO_CONTROL_MMD_CTRL(0xF)) != XGE_HAL_MDIO_CONTROL_MMD_CTRL(1));

        return XGE_HAL_OK;
}

/*
 * xge_hal_eeprom_test - to verify that EEprom in the xena can be
 programmed.
 * @devh: HAL device handle.
 * @data:variable that returns the result of each of the test conducted by
 * the driver.
 *
 * Verify that EEPROM in the xena can be programmed using I2C_CONTROL
 * register.
 * Return value:
 * 0 on success.
 */
xge_hal_status_e
xge_hal_eeprom_test(xge_hal_device_h devh, u64 *data)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        int fail     = 0;
        u32 ret_data = 0;

        /* Test Write Error at offset 0 */
        if (!xge_hal_write_eeprom(hldev, 0, 0, 3))
                fail = 1;

        /* Test Write at offset 4f0 */
        if (xge_hal_write_eeprom(hldev, 0x4F0, 0x01234567, 3))
                fail = 1;
        if (xge_hal_read_eeprom(hldev, 0x4F0, &ret_data))
                fail = 1;

        if (ret_data != 0x01234567)
                fail = 1;

        /* Reset the EEPROM data go FFFF */
        (void) xge_hal_write_eeprom(hldev, 0x4F0, 0xFFFFFFFF, 3);

        /* Test Write Request Error at offset 0x7c */
        if (!xge_hal_write_eeprom(hldev, 0x07C, 0, 3))
                fail = 1;

        /* Test Write Request at offset 0x7fc */
        if (xge_hal_write_eeprom(hldev, 0x7FC, 0x01234567, 3))
                fail = 1;
        if (xge_hal_read_eeprom(hldev, 0x7FC, &ret_data))
                fail = 1;

        if (ret_data != 0x01234567)
                fail = 1;

        /* Reset the EEPROM data go FFFF */
        (void) xge_hal_write_eeprom(hldev, 0x7FC, 0xFFFFFFFF, 3);

        /* Test Write Error at offset 0x80 */
        if (!xge_hal_write_eeprom(hldev, 0x080, 0, 3))
                fail = 1;

        /* Test Write Error at offset 0xfc */
        if (!xge_hal_write_eeprom(hldev, 0x0FC, 0, 3))
                fail = 1;

        /* Test Write Error at offset 0x100 */
        if (!xge_hal_write_eeprom(hldev, 0x100, 0, 3))
                fail = 1;

        /* Test Write Error at offset 4ec */
        if (!xge_hal_write_eeprom(hldev, 0x4EC, 0, 3))
                fail = 1;

        *data = fail;
        return XGE_HAL_OK;
}

/*
 * xge_hal_bist_test - invokes the MemBist test of the card .
 * @devh: HAL device handle.
 * xge_nic structure.
 * @data:variable that returns the result of each of the test conducted by
 * the driver.
 *
 * This invokes the MemBist test of the card. We give around
 * 2 secs time for the Test to complete. If it's still not complete
 * within this peiod, we consider that the test failed.
 * Return value:
 * 0 on success and -1 on failure.
 */
xge_hal_status_e
xge_hal_bist_test(xge_hal_device_h devh, u64 *data)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        u8 bist = 0;
        int cnt = 0;
        xge_hal_status_e ret = XGE_HAL_FAIL;

        xge_os_pci_read8(hldev->pdev, hldev->cfgh, 0x0f, &bist);
        bist |= 0x40;
        xge_os_pci_write8(hldev->pdev, hldev->cfgh, 0x0f, bist);

        while (cnt < 20) {
                xge_os_pci_read8(hldev->pdev, hldev->cfgh, 0x0f, &bist);
                if (!(bist & 0x40)) {
                        *data = (bist & 0x0f);
                        ret = XGE_HAL_OK;
                        break;
                }
                xge_os_mdelay(100);
                cnt++;
        }

        return ret;
}

/*
 * xge_hal_link_test - verifies the link state of the nic
 * @devh: HAL device handle.
 * @data: variable that returns the result of each of the test conducted by
 * the driver.
 *
 * Verify the link state of the NIC and updates the input
 * argument 'data' appropriately.
 * Return value:
 * 0 on success.
 */
xge_hal_status_e
xge_hal_link_test(xge_hal_device_h devh, u64 *data)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64;

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                        &bar0->adapter_status);
        if (val64 & XGE_HAL_ADAPTER_STATUS_RMAC_LOCAL_FAULT)
                *data = 1;

        return XGE_HAL_OK;
}


/**
 * xge_hal_getpause_data -Pause frame frame generation and reception.
 * @devh: HAL device handle.
 * @tx : A field to return the pause generation capability of the NIC.
 * @rx : A field to return the pause reception capability of the NIC.
 *
 * Returns the Pause frame generation and reception capability of the NIC.
 * Return value:
 *  void
 */
void xge_hal_getpause_data(xge_hal_device_h devh, int *tx, int *rx)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64;

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                                &bar0->rmac_pause_cfg);
        if (val64 & XGE_HAL_RMAC_PAUSE_GEN_EN)
                *tx = 1;
        if (val64 & XGE_HAL_RMAC_PAUSE_RCV_EN)
                *rx = 1;
}

/**
 * xge_hal_setpause_data -  set/reset pause frame generation.
 * @devh: HAL device handle.
 * @tx: A field that indicates the pause generation capability to be
 * set on the NIC.
 * @rx: A field that indicates the pause reception capability to be
 * set on the NIC.
 *
 * It can be used to set or reset Pause frame generation or reception
 * support of the NIC.
 * Return value:
 * int, returns 0 on Success
 */

int xge_hal_setpause_data(xge_hal_device_h devh, int tx, int rx)
{
        xge_hal_device_t *hldev = (xge_hal_device_t*)devh;
        xge_hal_pci_bar0_t *bar0 = (xge_hal_pci_bar0_t *)hldev->bar0;
        u64 val64;

        val64 = xge_os_pio_mem_read64(hldev->pdev, hldev->regh0,
                                    &bar0->rmac_pause_cfg);
        if (tx)
                val64 |= XGE_HAL_RMAC_PAUSE_GEN_EN;
        else
                val64 &= ~XGE_HAL_RMAC_PAUSE_GEN_EN;
        if (rx)
                val64 |= XGE_HAL_RMAC_PAUSE_RCV_EN;
        else
                val64 &= ~XGE_HAL_RMAC_PAUSE_RCV_EN;
        xge_os_pio_mem_write64(hldev->pdev, hldev->regh0,
                             val64, &bar0->rmac_pause_cfg);
        return 0;
}

/**
 * xge_hal_read_xfp_current_temp -
 * @hldev: HAL device handle.
 *
 * This routine only gets the temperature for XFP modules. Also, updating of the
 * NVRAM can sometimes fail and so the reading we might get may not be uptodate.
 */
u32 xge_hal_read_xfp_current_temp(xge_hal_device_h hldev)
{
    u16 val_1, val_2, i = 0;
    u32 actual;

    /* First update the NVRAM table of XFP. */

    (void) xge_hal_mdio_write(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, 0x8000, 0x3);


    /* Now wait for the transfer to complete */
    do
    {
        xge_os_mdelay( 50 ); // wait 50 milliseonds

        val_1 =  xge_hal_mdio_read(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, 0x8000);

        if ( i++ > 10 )
        {
            // waited 500 ms which should be plenty of time.
            break;
        }
    }while (( val_1 & 0x000C ) != 0x0004);

    /* Now NVRAM table of XFP should be updated, so read the temp */
    val_1 =  (u8) xge_hal_mdio_read(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, 0x8067);
    val_2 =  (u8) xge_hal_mdio_read(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, 0x8068);

    actual = ((val_1 << 8) | val_2);

    if (actual >= 32768)
        actual = actual- 65536;
    actual =  actual/256;

    return actual;
}

/**
 * __hal_chk_xpak_counter -  check the Xpak error count and log the msg.
 * @hldev: pointer to xge_hal_device_t structure
 * @type:  xpak stats error type
 * @value: xpak stats value
 *
 * It is used to log the error message based on the xpak stats value
 * Return value:
 * None
 */

void __hal_chk_xpak_counter(xge_hal_device_t *hldev, int type, u32 value)
{
        /*
         * If the value is high for three consecutive cylce,
         * log a error message
         */
        if(value == 3)
        {
                switch(type)
                {
                case 1:
                        hldev->stats.sw_dev_err_stats.xpak_counter.
                                excess_temp = 0;

                        /*
                         * Notify the ULD on Excess Xpak temperature alarm msg
                         */
                        if (g_xge_hal_driver->uld_callbacks.xpak_alarm_log) {
                                g_xge_hal_driver->uld_callbacks.xpak_alarm_log(
                                        hldev->upper_layer_info,
                                        XGE_HAL_XPAK_ALARM_EXCESS_TEMP);
                        }
                        break;
                case 2:
                        hldev->stats.sw_dev_err_stats.xpak_counter.
                                excess_bias_current = 0;

                        /*
                         * Notify the ULD on Excess  xpak bias current alarm msg
                         */
                        if (g_xge_hal_driver->uld_callbacks.xpak_alarm_log) {
                                g_xge_hal_driver->uld_callbacks.xpak_alarm_log(
                                        hldev->upper_layer_info,
                                        XGE_HAL_XPAK_ALARM_EXCESS_BIAS_CURRENT);
                        }
                        break;
                case 3:
                        hldev->stats.sw_dev_err_stats.xpak_counter.
                                excess_laser_output = 0;

                        /*
                         * Notify the ULD on Excess Xpak Laser o/p power
                         * alarm msg
                         */
                        if (g_xge_hal_driver->uld_callbacks.xpak_alarm_log) {
                                g_xge_hal_driver->uld_callbacks.xpak_alarm_log(
                                        hldev->upper_layer_info,
                                        XGE_HAL_XPAK_ALARM_EXCESS_LASER_OUTPUT);
                        }
                        break;
                default:
                        xge_debug_osdep(XGE_TRACE, "Incorrect XPAK Alarm "
                        "type ");
                }
        }

}

/**
 * __hal_updt_stats_xpak -  update the Xpak error count.
 * @hldev: pointer to xge_hal_device_t structure
 *
 * It is used to update the xpak stats value
 * Return value:
 * None
 */
void __hal_updt_stats_xpak(xge_hal_device_t *hldev)
{
        u16 val_1;
        u64 addr;

        /* Check the communication with the MDIO slave */
        addr = 0x0000;
        val_1 = 0x0;
        val_1 = xge_hal_mdio_read(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, addr);
        if((val_1 == 0xFFFF) || (val_1 == 0x0000))
        {
                xge_debug_osdep(XGE_TRACE, "ERR: MDIO slave access failed - "
                          "Returned %x", val_1);
                return;
        }

        /* Check for the expected value of 2040 at PMA address 0x0000 */
        if(val_1 != 0x2040)
        {
                xge_debug_osdep(XGE_TRACE, "Incorrect value at PMA address 0x0000 - ");
                xge_debug_osdep(XGE_TRACE, "Returned: %llx- Expected: 0x2040",
                                (unsigned long long)(unsigned long)val_1);
                return;
        }

        /* Loading the DOM register to MDIO register */
        addr = 0xA100;
        (void) xge_hal_mdio_write(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, addr, 0x0);
        val_1 = xge_hal_mdio_read(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, addr);

        /*
         * Reading the Alarm flags
         */
        addr = 0xA070;
        val_1 = 0x0;
        val_1 = xge_hal_mdio_read(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, addr);
        if(CHECKBIT(val_1, 0x7))
        {
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        alarm_transceiver_temp_high++;
                hldev->stats.sw_dev_err_stats.xpak_counter.excess_temp++;
                __hal_chk_xpak_counter(hldev, 0x1,
                        hldev->stats.sw_dev_err_stats.xpak_counter.excess_temp);
        } else {
                hldev->stats.sw_dev_err_stats.xpak_counter.excess_temp = 0;
        }
        if(CHECKBIT(val_1, 0x6))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        alarm_transceiver_temp_low++;

        if(CHECKBIT(val_1, 0x3))
        {
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        alarm_laser_bias_current_high++;
                hldev->stats.sw_dev_err_stats.xpak_counter.
                        excess_bias_current++;
                __hal_chk_xpak_counter(hldev, 0x2,
                        hldev->stats.sw_dev_err_stats.xpak_counter.
                        excess_bias_current);
        } else {
                hldev->stats.sw_dev_err_stats.xpak_counter.
                        excess_bias_current = 0;
        }
        if(CHECKBIT(val_1, 0x2))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        alarm_laser_bias_current_low++;

        if(CHECKBIT(val_1, 0x1))
        {
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        alarm_laser_output_power_high++;
                hldev->stats.sw_dev_err_stats.xpak_counter.
                        excess_laser_output++;
                __hal_chk_xpak_counter(hldev, 0x3,
                        hldev->stats.sw_dev_err_stats.xpak_counter.
                                excess_laser_output);
        } else {
                hldev->stats.sw_dev_err_stats.xpak_counter.
                                excess_laser_output = 0;
        }
        if(CHECKBIT(val_1, 0x0))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                                alarm_laser_output_power_low++;

        /*
         * Reading the warning flags
         */
        addr = 0xA074;
        val_1 = 0x0;
        val_1 = xge_hal_mdio_read(hldev, XGE_HAL_MDIO_MMD_PMA_DEV_ADDR, addr);
        if(CHECKBIT(val_1, 0x7))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        warn_transceiver_temp_high++;
        if(CHECKBIT(val_1, 0x6))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        warn_transceiver_temp_low++;
        if(CHECKBIT(val_1, 0x3))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        warn_laser_bias_current_high++;
        if(CHECKBIT(val_1, 0x2))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        warn_laser_bias_current_low++;
        if(CHECKBIT(val_1, 0x1))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        warn_laser_output_power_high++;
        if(CHECKBIT(val_1, 0x0))
                hldev->stats.sw_dev_err_stats.stats_xpak.
                        warn_laser_output_power_low++;
}