/* * 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 #include "smu7_thermal.h" #include "smu7_hwmgr.h" #include "smu7_common.h" int smu7_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 -ENODEV; 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 smu7_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr, uint32_t *speed) { uint32_t duty100; uint32_t duty; uint64_t tmp64; if (hwmgr->thermal_controller.fanInfo.bNoFan) return -ENODEV; duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL1, FMAX_DUTY100); duty = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_STATUS, FDO_PWM_DUTY); if (duty100 == 0) return -EINVAL; tmp64 = (uint64_t)duty * 100; do_div(tmp64, duty100); *speed = (uint32_t)tmp64; if (*speed > 100) *speed = 100; return 0; } int smu7_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed) { uint32_t tach_period; uint32_t crystal_clock_freq; if (hwmgr->thermal_controller.fanInfo.bNoFan || !hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution) return -ENODEV; tach_period = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_TACH_STATUS, TACH_PERIOD); if (tach_period == 0) return -EINVAL; crystal_clock_freq = smu7_get_xclk(hwmgr); *speed = 60 * crystal_clock_freq * 10000 / tach_period; return 0; } /** * 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 smu7_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode) { if (hwmgr->fan_ctrl_is_in_default_mode) { hwmgr->fan_ctrl_default_mode = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, FDO_PWM_MODE); hwmgr->tmin = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, TMIN); hwmgr->fan_ctrl_is_in_default_mode = false; } PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, TMIN, 0); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, 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 smu7_fan_ctrl_set_default_mode(struct pp_hwmgr *hwmgr) { if (!hwmgr->fan_ctrl_is_in_default_mode) { PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, FDO_PWM_MODE, hwmgr->fan_ctrl_default_mode); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, TMIN, hwmgr->tmin); hwmgr->fan_ctrl_is_in_default_mode = true; } return 0; } int smu7_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr) { int result; if (PP_CAP(PHM_PlatformCaps_ODFuzzyFanControlSupport)) { cgs_write_register(hwmgr->device, mmSMC_MSG_ARG_0, FAN_CONTROL_FUZZY); result = smum_send_msg_to_smc(hwmgr, PPSMC_StartFanControl); if (PP_CAP(PHM_PlatformCaps_FanSpeedInTableIsRPM)) hwmgr->hwmgr_func->set_max_fan_rpm_output(hwmgr, hwmgr->thermal_controller. advanceFanControlParameters.usMaxFanRPM); else hwmgr->hwmgr_func->set_max_fan_pwm_output(hwmgr, hwmgr->thermal_controller. advanceFanControlParameters.usMaxFanPWM); } else { cgs_write_register(hwmgr->device, mmSMC_MSG_ARG_0, FAN_CONTROL_TABLE); result = smum_send_msg_to_smc(hwmgr, PPSMC_StartFanControl); } if (!result && hwmgr->thermal_controller. advanceFanControlParameters.ucTargetTemperature) result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_SetFanTemperatureTarget, hwmgr->thermal_controller. advanceFanControlParameters.ucTargetTemperature); hwmgr->fan_ctrl_enabled = true; return result; } int smu7_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr) { hwmgr->fan_ctrl_enabled = false; return smum_send_msg_to_smc(hwmgr, PPSMC_StopFanControl); } /** * 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 smu7_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr, uint32_t speed) { 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)) smu7_fan_ctrl_stop_smc_fan_control(hwmgr); duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL1, FMAX_DUTY100); if (duty100 == 0) return -EINVAL; tmp64 = (uint64_t)speed * duty100; do_div(tmp64, 100); duty = (uint32_t)tmp64; PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL0, FDO_STATIC_DUTY, duty); return smu7_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 smu7_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr) { int result; if (hwmgr->thermal_controller.fanInfo.bNoFan) return 0; if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) { result = smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC); if (!result) result = smu7_fan_ctrl_start_smc_fan_control(hwmgr); } else result = smu7_fan_ctrl_set_default_mode(hwmgr); return result; } /** * 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 smu7_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed) { uint32_t tach_period; uint32_t crystal_clock_freq; if (hwmgr->thermal_controller.fanInfo.bNoFan || (hwmgr->thermal_controller.fanInfo. ucTachometerPulsesPerRevolution == 0) || (speed < hwmgr->thermal_controller.fanInfo.ulMinRPM) || (speed > hwmgr->thermal_controller.fanInfo.ulMaxRPM)) return 0; if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) smu7_fan_ctrl_stop_smc_fan_control(hwmgr); crystal_clock_freq = smu7_get_xclk(hwmgr); tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_TACH_STATUS, TACH_PERIOD, tach_period); return smu7_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 smu7_thermal_get_temperature(struct pp_hwmgr *hwmgr) { int temp; temp = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_MULT_THERMAL_STATUS, CTF_TEMP); /* Bit 9 means the reading is lower than the lowest usable value. */ if (temp & 0x200) temp = SMU7_THERMAL_MAXIMUM_TEMP_READING; else 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 smu7_thermal_set_temperature_range(struct pp_hwmgr *hwmgr, uint32_t low_temp, uint32_t high_temp) { uint32_t low = SMU7_THERMAL_MINIMUM_ALERT_TEMP * PP_TEMPERATURE_UNITS_PER_CENTIGRADES; uint32_t high = SMU7_THERMAL_MAXIMUM_ALERT_TEMP * PP_TEMPERATURE_UNITS_PER_CENTIGRADES; if (low < low_temp) low = low_temp; if (high > high_temp) high = high_temp; if (low > high) return -EINVAL; PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, DIG_THERM_INTH, (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES)); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, DIG_THERM_INTL, (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES)); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_CTRL, DIG_THERM_DPM, (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES)); return 0; } /** * Programs thermal controller one-time setting registers * * @param hwmgr The address of the hardware manager. */ static int smu7_thermal_initialize(struct pp_hwmgr *hwmgr) { if (hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution) PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_TACH_CTRL, EDGE_PER_REV, hwmgr->thermal_controller.fanInfo. ucTachometerPulsesPerRevolution - 1); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, 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 void smu7_thermal_enable_alert(struct pp_hwmgr *hwmgr) { uint32_t alert; alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, THERM_INT_MASK); alert &= ~(SMU7_THERMAL_HIGH_ALERT_MASK | SMU7_THERMAL_LOW_ALERT_MASK); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, THERM_INT_MASK, alert); /* send message to SMU to enable internal thermal interrupts */ smum_send_msg_to_smc(hwmgr, PPSMC_MSG_Thermal_Cntl_Enable); } /** * Disable thermal alerts on the RV770 thermal controller. * @param hwmgr The address of the hardware manager. */ int smu7_thermal_disable_alert(struct pp_hwmgr *hwmgr) { uint32_t alert; alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, THERM_INT_MASK); alert |= (SMU7_THERMAL_HIGH_ALERT_MASK | SMU7_THERMAL_LOW_ALERT_MASK); PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, THERM_INT_MASK, alert); /* send message to SMU to disable internal thermal interrupts */ return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_Thermal_Cntl_Disable); } /** * Uninitialize the thermal controller. * Currently just disables alerts. * @param hwmgr The address of the hardware manager. */ int smu7_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr) { int result = smu7_thermal_disable_alert(hwmgr); if (!hwmgr->thermal_controller.fanInfo.bNoFan) smu7_fan_ctrl_set_default_mode(hwmgr); return result; } /** * 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 */ static int smu7_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)) { smu7_fan_ctrl_start_smc_fan_control(hwmgr); smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC); } return 0; } int smu7_start_thermal_controller(struct pp_hwmgr *hwmgr, struct PP_TemperatureRange *range) { int ret = 0; if (range == NULL) return -EINVAL; smu7_thermal_initialize(hwmgr); ret = smu7_thermal_set_temperature_range(hwmgr, range->min, range->max); if (ret) return -EINVAL; smu7_thermal_enable_alert(hwmgr); ret = smum_thermal_avfs_enable(hwmgr); if (ret) return -EINVAL; /* 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. */ smum_thermal_setup_fan_table(hwmgr); smu7_thermal_start_smc_fan_control(hwmgr); return 0; } int smu7_thermal_ctrl_uninitialize_thermal_controller(struct pp_hwmgr *hwmgr) { if (!hwmgr->thermal_controller.fanInfo.bNoFan) smu7_fan_ctrl_set_default_mode(hwmgr); return 0; }