diff options
Diffstat (limited to 'drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c | 471 |
1 files changed, 471 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c new file mode 100644 index 000000000000..0b30f73649a8 --- /dev/null +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c @@ -0,0 +1,471 @@ +/* + * 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 <asm/div64.h> +#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 = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev); + + *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)) { + result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_StartFanControl, + FAN_CONTROL_FUZZY, NULL); + + 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 { + result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_StartFanControl, + FAN_CONTROL_TABLE, NULL); + } + + if (!result && hwmgr->thermal_controller. + advanceFanControlParameters.ucTargetTemperature) + result = smum_send_msg_to_smc_with_parameter(hwmgr, + PPSMC_MSG_SetFanTemperatureTarget, + hwmgr->thermal_controller. + advanceFanControlParameters.ucTargetTemperature, + NULL); + 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, NULL); +} + +/** +* 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 == 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 = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev); + + tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed); + + PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, + CG_TACH_CTRL, TARGET_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, + int low_temp, int high_temp) +{ + int low = SMU7_THERMAL_MINIMUM_ALERT_TEMP * + PP_TEMPERATURE_UNITS_PER_CENTIGRADES; + int 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, NULL); +} + +/** +* 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, NULL); +} + +/** +* 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; +} + |