/*
 * Copyright 2016 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include "vega10_thermal.h"
#include "vega10_hwmgr.h"
#include "vega10_smumgr.h"
#include "vega10_ppsmc.h"
#include "vega10_inc.h"
#include "soc15_common.h"
#include "pp_debug.h"

static int vega10_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
{
        smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetCurrentRpm);
        *current_rpm = smum_get_argument(hwmgr);
        return 0;
}

int vega10_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
                struct phm_fan_speed_info *fan_speed_info)
{

        if (hwmgr->thermal_controller.fanInfo.bNoFan)
                return 0;

        fan_speed_info->supports_percent_read = true;
        fan_speed_info->supports_percent_write = true;
        fan_speed_info->min_percent = 0;
        fan_speed_info->max_percent = 100;

        if (PP_CAP(PHM_PlatformCaps_FanSpeedInTableIsRPM) &&
                hwmgr->thermal_controller.fanInfo.
                ucTachometerPulsesPerRevolution) {
                fan_speed_info->supports_rpm_read = true;
                fan_speed_info->supports_rpm_write = true;
                fan_speed_info->min_rpm =
                                hwmgr->thermal_controller.fanInfo.ulMinRPM;
                fan_speed_info->max_rpm =
                                hwmgr->thermal_controller.fanInfo.ulMaxRPM;
        } else {
                fan_speed_info->min_rpm = 0;
                fan_speed_info->max_rpm = 0;
        }

        return 0;
}

int vega10_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
                uint32_t *speed)
{
        uint32_t current_rpm;
        uint32_t percent = 0;

        if (hwmgr->thermal_controller.fanInfo.bNoFan)
                return 0;

        if (vega10_get_current_rpm(hwmgr, &current_rpm))
                return -1;

        if (hwmgr->thermal_controller.
                        advanceFanControlParameters.usMaxFanRPM != 0)
                percent = current_rpm * 100 /
                        hwmgr->thermal_controller.
                        advanceFanControlParameters.usMaxFanRPM;

        *speed = percent > 100 ? 100 : percent;

        return 0;
}

int vega10_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
{
        struct amdgpu_device *adev = hwmgr->adev;
        struct vega10_hwmgr *data = hwmgr->backend;
        uint32_t tach_period;
        uint32_t crystal_clock_freq;
        int result = 0;

        if (hwmgr->thermal_controller.fanInfo.bNoFan)
                return -1;

        if (data->smu_features[GNLD_FAN_CONTROL].supported) {
                result = vega10_get_current_rpm(hwmgr, speed);
        } else {
                tach_period =
                        REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_STATUS),
                                          CG_TACH_STATUS,
                                          TACH_PERIOD);

                if (tach_period == 0)
                        return -EINVAL;

                crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);

                *speed = 60 * crystal_clock_freq * 10000 / tach_period;
        }

        return result;
}

/**
* Set Fan Speed Control to static mode,
* so that the user can decide what speed to use.
* @param    hwmgr  the address of the powerplay hardware manager.
*           mode the fan control mode, 0 default, 1 by percent, 5, by RPM
* @exception Should always succeed.
*/
int vega10_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
{
        struct amdgpu_device *adev = hwmgr->adev;

        if (hwmgr->fan_ctrl_is_in_default_mode) {
                hwmgr->fan_ctrl_default_mode =
                        REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
                                CG_FDO_CTRL2, FDO_PWM_MODE);
                hwmgr->tmin =
                        REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
                                CG_FDO_CTRL2, TMIN);
                hwmgr->fan_ctrl_is_in_default_mode = false;
        }

        WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
                        REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
                                CG_FDO_CTRL2, TMIN, 0));
        WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
                        REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
                                CG_FDO_CTRL2, FDO_PWM_MODE, mode));

        return 0;
}

/**
* Reset Fan Speed Control to default mode.
* @param    hwmgr  the address of the powerplay hardware manager.
* @exception Should always succeed.
*/
int vega10_fan_ctrl_set_default_mode(struct pp_hwmgr *hwmgr)
{
        struct amdgpu_device *adev = hwmgr->adev;

        if (!hwmgr->fan_ctrl_is_in_default_mode) {
                WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
                        REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
                                CG_FDO_CTRL2, FDO_PWM_MODE,
                                hwmgr->fan_ctrl_default_mode));
                WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
                        REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
                                CG_FDO_CTRL2, TMIN,
                                hwmgr->tmin << CG_FDO_CTRL2__TMIN__SHIFT));
                hwmgr->fan_ctrl_is_in_default_mode = true;
        }

        return 0;
}

/**
 * @fn vega10_enable_fan_control_feature
 * @brief Enables the SMC Fan Control Feature.
 *
 * @param    hwmgr - the address of the powerplay hardware manager.
 * @return   0 on success. -1 otherwise.
 */
static int vega10_enable_fan_control_feature(struct pp_hwmgr *hwmgr)
{
        struct vega10_hwmgr *data = hwmgr->backend;

        if (data->smu_features[GNLD_FAN_CONTROL].supported) {
                PP_ASSERT_WITH_CODE(!vega10_enable_smc_features(
                                hwmgr, true,
                                data->smu_features[GNLD_FAN_CONTROL].
                                smu_feature_bitmap),
                                "Attempt to Enable FAN CONTROL feature Failed!",
                                return -1);
                data->smu_features[GNLD_FAN_CONTROL].enabled = true;
        }

        return 0;
}

static int vega10_disable_fan_control_feature(struct pp_hwmgr *hwmgr)
{
        struct vega10_hwmgr *data = hwmgr->backend;

        if (data->smu_features[GNLD_FAN_CONTROL].supported) {
                PP_ASSERT_WITH_CODE(!vega10_enable_smc_features(
                                hwmgr, false,
                                data->smu_features[GNLD_FAN_CONTROL].
                                smu_feature_bitmap),
                                "Attempt to Enable FAN CONTROL feature Failed!",
                                return -1);
                data->smu_features[GNLD_FAN_CONTROL].enabled = false;
        }

        return 0;
}

int vega10_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
{
        if (hwmgr->thermal_controller.fanInfo.bNoFan)
                return -1;

        PP_ASSERT_WITH_CODE(!vega10_enable_fan_control_feature(hwmgr),
                        "Attempt to Enable SMC FAN CONTROL Feature Failed!",
                        return -1);

        return 0;
}


int vega10_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
{
        struct vega10_hwmgr *data = hwmgr->backend;

        if (hwmgr->thermal_controller.fanInfo.bNoFan)
                return -1;

        if (data->smu_features[GNLD_FAN_CONTROL].supported) {
                PP_ASSERT_WITH_CODE(!vega10_disable_fan_control_feature(hwmgr),
                                "Attempt to Disable SMC FAN CONTROL Feature Failed!",
                                return -1);
        }
        return 0;
}

/**
* Set Fan Speed in percent.
* @param    hwmgr  the address of the powerplay hardware manager.
* @param    speed is the percentage value (0% - 100%) to be set.
* @exception Fails is the 100% setting appears to be 0.
*/
int vega10_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
                uint32_t speed)
{
        struct amdgpu_device *adev = hwmgr->adev;
        uint32_t duty100;
        uint32_t duty;
        uint64_t tmp64;

        if (hwmgr->thermal_controller.fanInfo.bNoFan)
                return 0;

        if (speed > 100)
                speed = 100;

        if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
                vega10_fan_ctrl_stop_smc_fan_control(hwmgr);

        duty100 = REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL1),
                                    CG_FDO_CTRL1, FMAX_DUTY100);

        if (duty100 == 0)
                return -EINVAL;

        tmp64 = (uint64_t)speed * duty100;
        do_div(tmp64, 100);
        duty = (uint32_t)tmp64;

        WREG32_SOC15(THM, 0, mmCG_FDO_CTRL0,
                REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL0),
                        CG_FDO_CTRL0, FDO_STATIC_DUTY, duty));

        return vega10_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
}

/**
* Reset Fan Speed to default.
* @param    hwmgr  the address of the powerplay hardware manager.
* @exception Always succeeds.
*/
int vega10_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr)
{
        if (hwmgr->thermal_controller.fanInfo.bNoFan)
                return 0;

        if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
                return vega10_fan_ctrl_start_smc_fan_control(hwmgr);
        else
                return vega10_fan_ctrl_set_default_mode(hwmgr);
}

/**
* Set Fan Speed in RPM.
* @param    hwmgr  the address of the powerplay hardware manager.
* @param    speed is the percentage value (min - max) to be set.
* @exception Fails is the speed not lie between min and max.
*/
int vega10_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
{
        struct amdgpu_device *adev = hwmgr->adev;
        uint32_t tach_period;
        uint32_t crystal_clock_freq;
        int result = 0;

        if (hwmgr->thermal_controller.fanInfo.bNoFan ||
            speed == 0 ||
            (speed < hwmgr->thermal_controller.fanInfo.ulMinRPM) ||
            (speed > hwmgr->thermal_controller.fanInfo.ulMaxRPM))
                return -1;

        if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
                result = vega10_fan_ctrl_stop_smc_fan_control(hwmgr);

        if (!result) {
                crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);
                tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed);
                WREG32_SOC15(THM, 0, mmCG_TACH_CTRL,
                                REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_CTRL),
                                        CG_TACH_CTRL, TARGET_PERIOD,
                                        tach_period));
        }
        return vega10_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC_RPM);
}

/**
* Reads the remote temperature from the SIslands thermal controller.
*
* @param    hwmgr The address of the hardware manager.
*/
int vega10_thermal_get_temperature(struct pp_hwmgr *hwmgr)
{
        struct amdgpu_device *adev = hwmgr->adev;
        int temp;

        temp = RREG32_SOC15(THM, 0, mmCG_MULT_THERMAL_STATUS);

        temp = (temp & CG_MULT_THERMAL_STATUS__CTF_TEMP_MASK) >>
                        CG_MULT_THERMAL_STATUS__CTF_TEMP__SHIFT;

        temp = temp & 0x1ff;

        temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES;

        return temp;
}

/**
* Set the requested temperature range for high and low alert signals
*
* @param    hwmgr The address of the hardware manager.
* @param    range Temperature range to be programmed for
*           high and low alert signals
* @exception PP_Result_BadInput if the input data is not valid.
*/
static int vega10_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
                struct PP_TemperatureRange *range)
{
        struct amdgpu_device *adev = hwmgr->adev;
        int low = VEGA10_THERMAL_MINIMUM_ALERT_TEMP *
                        PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
        int high = VEGA10_THERMAL_MAXIMUM_ALERT_TEMP *
                        PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
        uint32_t val;

        if (low < range->min)
                low = range->min;
        if (high > range->max)
                high = range->max;

        if (low > high)
                return -EINVAL;

        val = RREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL);

        val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, MAX_IH_CREDIT, 5);
        val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, THERM_IH_HW_ENA, 1);
        val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTH, (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
        val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTL, (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
        val &= (~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK) &
                        (~THM_THERMAL_INT_CTRL__THERM_INTH_MASK_MASK) &
                        (~THM_THERMAL_INT_CTRL__THERM_INTL_MASK_MASK);

        WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL, val);

        return 0;
}

/**
* Programs thermal controller one-time setting registers
*
* @param    hwmgr The address of the hardware manager.
*/
static int vega10_thermal_initialize(struct pp_hwmgr *hwmgr)
{
        struct amdgpu_device *adev = hwmgr->adev;

        if (hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution) {
                WREG32_SOC15(THM, 0, mmCG_TACH_CTRL,
                        REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_CTRL),
                                CG_TACH_CTRL, EDGE_PER_REV,
                                hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution - 1));
        }

        WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
                REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
                        CG_FDO_CTRL2, TACH_PWM_RESP_RATE, 0x28));

        return 0;
}

/**
* Enable thermal alerts on the RV770 thermal controller.
*
* @param    hwmgr The address of the hardware manager.
*/
static int vega10_thermal_enable_alert(struct pp_hwmgr *hwmgr)
{
        struct amdgpu_device *adev = hwmgr->adev;
        struct vega10_hwmgr *data = hwmgr->backend;
        uint32_t val = 0;

        if (data->smu_features[GNLD_FW_CTF].supported) {
                if (data->smu_features[GNLD_FW_CTF].enabled)
                        printk("[Thermal_EnableAlert] FW CTF Already Enabled!\n");

                PP_ASSERT_WITH_CODE(!vega10_enable_smc_features(hwmgr,
                                true,
                                data->smu_features[GNLD_FW_CTF].smu_feature_bitmap),
                                "Attempt to Enable FW CTF feature Failed!",
                                return -1);
                data->smu_features[GNLD_FW_CTF].enabled = true;
        }

        val |= (1 << THM_THERMAL_INT_ENA__THERM_INTH_CLR__SHIFT);
        val |= (1 << THM_THERMAL_INT_ENA__THERM_INTL_CLR__SHIFT);
        val |= (1 << THM_THERMAL_INT_ENA__THERM_TRIGGER_CLR__SHIFT);

        WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, val);

        return 0;
}

/**
* Disable thermal alerts on the RV770 thermal controller.
* @param    hwmgr The address of the hardware manager.
*/
int vega10_thermal_disable_alert(struct pp_hwmgr *hwmgr)
{
        struct amdgpu_device *adev = hwmgr->adev;
        struct vega10_hwmgr *data = hwmgr->backend;

        if (data->smu_features[GNLD_FW_CTF].supported) {
                if (!data->smu_features[GNLD_FW_CTF].enabled)
                        printk("[Thermal_EnableAlert] FW CTF Already disabled!\n");


                PP_ASSERT_WITH_CODE(!vega10_enable_smc_features(hwmgr,
                        false,
                        data->smu_features[GNLD_FW_CTF].smu_feature_bitmap),
                        "Attempt to disable FW CTF feature Failed!",
                        return -1);
                data->smu_features[GNLD_FW_CTF].enabled = false;
        }

        WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, 0);

        return 0;
}

/**
* Uninitialize the thermal controller.
* Currently just disables alerts.
* @param    hwmgr The address of the hardware manager.
*/
int vega10_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
{
        int result = vega10_thermal_disable_alert(hwmgr);

        if (!hwmgr->thermal_controller.fanInfo.bNoFan)
                vega10_fan_ctrl_set_default_mode(hwmgr);

        return result;
}

/**
* Set up the fan table to control the fan using the SMC.
* @param    hwmgr  the address of the powerplay hardware manager.
* @param    pInput the pointer to input data
* @param    pOutput the pointer to output data
* @param    pStorage the pointer to temporary storage
* @param    Result the last failure code
* @return   result from set temperature range routine
*/
int vega10_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
{
        int ret;
        struct vega10_hwmgr *data = hwmgr->backend;
        PPTable_t *table = &(data->smc_state_table.pp_table);

        if (!data->smu_features[GNLD_FAN_CONTROL].supported)
                return 0;

        table->FanMaximumRpm = (uint16_t)hwmgr->thermal_controller.
                        advanceFanControlParameters.usMaxFanRPM;
        table->FanThrottlingRpm = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanRPMMaxLimit;
        table->FanAcousticLimitRpm = (uint16_t)(hwmgr->thermal_controller.
                        advanceFanControlParameters.ulMinFanSCLKAcousticLimit);
        table->FanTargetTemperature = hwmgr->thermal_controller.
                        advanceFanControlParameters.usTMax;

        smum_send_msg_to_smc_with_parameter(hwmgr,
                                PPSMC_MSG_SetFanTemperatureTarget,
                                (uint32_t)table->FanTargetTemperature);

        table->FanPwmMin = hwmgr->thermal_controller.
                        advanceFanControlParameters.usPWMMin * 255 / 100;
        table->FanTargetGfxclk = (uint16_t)(hwmgr->thermal_controller.
                        advanceFanControlParameters.ulTargetGfxClk);
        table->FanGainEdge = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanGainEdge;
        table->FanGainHotspot = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanGainHotspot;
        table->FanGainLiquid = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanGainLiquid;
        table->FanGainVrVddc = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanGainVrVddc;
        table->FanGainVrMvdd = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanGainVrMvdd;
        table->FanGainPlx = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanGainPlx;
        table->FanGainHbm = hwmgr->thermal_controller.
                        advanceFanControlParameters.usFanGainHbm;
        table->FanZeroRpmEnable = hwmgr->thermal_controller.
                        advanceFanControlParameters.ucEnableZeroRPM;
        table->FanStopTemp = hwmgr->thermal_controller.
                        advanceFanControlParameters.usZeroRPMStopTemperature;
        table->FanStartTemp = hwmgr->thermal_controller.
                        advanceFanControlParameters.usZeroRPMStartTemperature;

        ret = smum_smc_table_manager(hwmgr,
                                (uint8_t *)(&(data->smc_state_table.pp_table)),
                                PPTABLE, false);
        if (ret)
                pr_info("Failed to update Fan Control Table in PPTable!");

        return ret;
}

/**
* Start the fan control on the SMC.
* @param    hwmgr  the address of the powerplay hardware manager.
* @param    pInput the pointer to input data
* @param    pOutput the pointer to output data
* @param    pStorage the pointer to temporary storage
* @param    Result the last failure code
* @return   result from set temperature range routine
*/
int vega10_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr)
{
/* If the fantable setup has failed we could have disabled
 * PHM_PlatformCaps_MicrocodeFanControl even after
 * this function was included in the table.
 * Make sure that we still think controlling the fan is OK.
*/
        if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
                vega10_fan_ctrl_start_smc_fan_control(hwmgr);

        return 0;
}


int vega10_start_thermal_controller(struct pp_hwmgr *hwmgr,
                                struct PP_TemperatureRange *range)
{
        int ret = 0;

        if (range == NULL)
                return -EINVAL;

        vega10_thermal_initialize(hwmgr);
        ret = vega10_thermal_set_temperature_range(hwmgr, range);
        if (ret)
                return -EINVAL;

        vega10_thermal_enable_alert(hwmgr);
/* We should restrict performance levels to low before we halt the SMC.
 * On the other hand we are still in boot state when we do this
 * so it would be pointless.
 * If this assumption changes we have to revisit this table.
 */
        ret = vega10_thermal_setup_fan_table(hwmgr);
        if (ret)
                return -EINVAL;

        vega10_thermal_start_smc_fan_control(hwmgr);

        return 0;
};




int vega10_thermal_ctrl_uninitialize_thermal_controller(struct pp_hwmgr *hwmgr)
{
        if (!hwmgr->thermal_controller.fanInfo.bNoFan) {
                vega10_fan_ctrl_set_default_mode(hwmgr);
                vega10_fan_ctrl_stop_smc_fan_control(hwmgr);
        }
        return 0;
}