root/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_thermal.c

DEFINITIONS

1. vega12_get_current_rpm
2. vega12_fan_ctrl_get_fan_speed_info
3. vega12_fan_ctrl_get_fan_speed_rpm
4. vega12_enable_fan_control_feature
5. vega12_disable_fan_control_feature
6. vega12_fan_ctrl_start_smc_fan_control
7. vega12_fan_ctrl_stop_smc_fan_control
8. vega12_fan_ctrl_reset_fan_speed_to_default
9. vega12_thermal_get_temperature
10. vega12_thermal_set_temperature_range
11. vega12_thermal_enable_alert
12. vega12_thermal_disable_alert
13. vega12_thermal_stop_thermal_controller
14. vega12_thermal_setup_fan_table
15. vega12_thermal_start_smc_fan_control
16. vega12_start_thermal_controller

   1 /*
   2  * Copyright 2017 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23 
  24 #include "vega12_thermal.h"
  25 #include "vega12_hwmgr.h"
  26 #include "vega12_smumgr.h"
  27 #include "vega12_ppsmc.h"
  28 #include "vega12_inc.h"
  29 #include "soc15_common.h"
  30 #include "pp_debug.h"
  31 
  32 static int vega12_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
  33 {
  34         PP_ASSERT_WITH_CODE(!smum_send_msg_to_smc(hwmgr,
  35                                 PPSMC_MSG_GetCurrentRpm),
  36                         "Attempt to get current RPM from SMC Failed!",
  37                         return -EINVAL);
  38         *current_rpm = smum_get_argument(hwmgr);
  39 
  40         return 0;
  41 }
  42 
  43 int vega12_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
  44                 struct phm_fan_speed_info *fan_speed_info)
  45 {
  46         memset(fan_speed_info, 0, sizeof(*fan_speed_info));
  47         fan_speed_info->supports_percent_read = false;
  48         fan_speed_info->supports_percent_write = false;
  49         fan_speed_info->supports_rpm_read = true;
  50         fan_speed_info->supports_rpm_write = true;
  51 
  52         return 0;
  53 }
  54 
  55 int vega12_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
  56 {
  57         *speed = 0;
  58 
  59         return vega12_get_current_rpm(hwmgr, speed);
  60 }
  61 
  62 /**
  63  * @fn vega12_enable_fan_control_feature
  64  * @brief Enables the SMC Fan Control Feature.
  65  *
  66  * @param    hwmgr - the address of the powerplay hardware manager.
  67  * @return   0 on success. -1 otherwise.
  68  */
  69 static int vega12_enable_fan_control_feature(struct pp_hwmgr *hwmgr)
  70 {
  71 #if 0
  72         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
  73 
  74         if (data->smu_features[GNLD_FAN_CONTROL].supported) {
  75                 PP_ASSERT_WITH_CODE(!vega12_enable_smc_features(
  76                                 hwmgr, true,
  77                                 data->smu_features[GNLD_FAN_CONTROL].
  78                                 smu_feature_bitmap),
  79                                 "Attempt to Enable FAN CONTROL feature Failed!",
  80                                 return -1);
  81                 data->smu_features[GNLD_FAN_CONTROL].enabled = true;
  82         }
  83 #endif
  84         return 0;
  85 }
  86 
  87 static int vega12_disable_fan_control_feature(struct pp_hwmgr *hwmgr)
  88 {
  89 #if 0
  90         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
  91 
  92         if (data->smu_features[GNLD_FAN_CONTROL].supported) {
  93                 PP_ASSERT_WITH_CODE(!vega12_enable_smc_features(
  94                                 hwmgr, false,
  95                                 data->smu_features[GNLD_FAN_CONTROL].
  96                                 smu_feature_bitmap),
  97                                 "Attempt to Enable FAN CONTROL feature Failed!",
  98                                 return -1);
  99                 data->smu_features[GNLD_FAN_CONTROL].enabled = false;
 100         }
 101 #endif
 102         return 0;
 103 }
 104 
 105 int vega12_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
 106 {
 107         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 108 
 109         if (data->smu_features[GNLD_FAN_CONTROL].supported)
 110                 PP_ASSERT_WITH_CODE(
 111                                 !vega12_enable_fan_control_feature(hwmgr),
 112                                 "Attempt to Enable SMC FAN CONTROL Feature Failed!",
 113                                 return -1);
 114 
 115         return 0;
 116 }
 117 
 118 
 119 int vega12_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
 120 {
 121         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 122 
 123         if (data->smu_features[GNLD_FAN_CONTROL].supported)
 124                 PP_ASSERT_WITH_CODE(!vega12_disable_fan_control_feature(hwmgr),
 125                                 "Attempt to Disable SMC FAN CONTROL Feature Failed!",
 126                                 return -1);
 127 
 128         return 0;
 129 }
 130 
 131 /**
 132 * Reset Fan Speed to default.
 133 * @param    hwmgr  the address of the powerplay hardware manager.
 134 * @exception Always succeeds.
 135 */
 136 int vega12_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr)
 137 {
 138         return vega12_fan_ctrl_start_smc_fan_control(hwmgr);
 139 }
 140 
 141 /**
 142 * Reads the remote temperature from the SIslands thermal controller.
 143 *
 144 * @param    hwmgr The address of the hardware manager.
 145 */
 146 int vega12_thermal_get_temperature(struct pp_hwmgr *hwmgr)
 147 {
 148         struct amdgpu_device *adev = hwmgr->adev;
 149         int temp = 0;
 150 
 151         temp = RREG32_SOC15(THM, 0, mmCG_MULT_THERMAL_STATUS);
 152 
 153         temp = (temp & CG_MULT_THERMAL_STATUS__CTF_TEMP_MASK) >>
 154                         CG_MULT_THERMAL_STATUS__CTF_TEMP__SHIFT;
 155 
 156         temp = temp & 0x1ff;
 157 
 158         temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 159         return temp;
 160 }
 161 
 162 /**
 163 * Set the requested temperature range for high and low alert signals
 164 *
 165 * @param    hwmgr The address of the hardware manager.
 166 * @param    range Temperature range to be programmed for
 167 *           high and low alert signals
 168 * @exception PP_Result_BadInput if the input data is not valid.
 169 */
 170 static int vega12_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
 171                 struct PP_TemperatureRange *range)
 172 {
 173         struct amdgpu_device *adev = hwmgr->adev;
 174         int low = VEGA12_THERMAL_MINIMUM_ALERT_TEMP *
 175                         PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 176         int high = VEGA12_THERMAL_MAXIMUM_ALERT_TEMP *
 177                         PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 178         uint32_t val;
 179 
 180         if (low < range->min)
 181                 low = range->min;
 182         if (high > range->max)
 183                 high = range->max;
 184 
 185         if (low > high)
 186                 return -EINVAL;
 187 
 188         val = RREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL);
 189 
 190         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, MAX_IH_CREDIT, 5);
 191         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, THERM_IH_HW_ENA, 1);
 192         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTH, (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
 193         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTL, (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
 194         val = val & (~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK);
 195 
 196         WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL, val);
 197 
 198         return 0;
 199 }
 200 
 201 /**
 202 * Enable thermal alerts on the RV770 thermal controller.
 203 *
 204 * @param    hwmgr The address of the hardware manager.
 205 */
 206 static int vega12_thermal_enable_alert(struct pp_hwmgr *hwmgr)
 207 {
 208         struct amdgpu_device *adev = hwmgr->adev;
 209         uint32_t val = 0;
 210 
 211         val |= (1 << THM_THERMAL_INT_ENA__THERM_INTH_CLR__SHIFT);
 212         val |= (1 << THM_THERMAL_INT_ENA__THERM_INTL_CLR__SHIFT);
 213         val |= (1 << THM_THERMAL_INT_ENA__THERM_TRIGGER_CLR__SHIFT);
 214 
 215         WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, val);
 216 
 217         return 0;
 218 }
 219 
 220 /**
 221 * Disable thermal alerts on the RV770 thermal controller.
 222 * @param    hwmgr The address of the hardware manager.
 223 */
 224 int vega12_thermal_disable_alert(struct pp_hwmgr *hwmgr)
 225 {
 226         struct amdgpu_device *adev = hwmgr->adev;
 227 
 228         WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, 0);
 229 
 230         return 0;
 231 }
 232 
 233 /**
 234 * Uninitialize the thermal controller.
 235 * Currently just disables alerts.
 236 * @param    hwmgr The address of the hardware manager.
 237 */
 238 int vega12_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
 239 {
 240         int result = vega12_thermal_disable_alert(hwmgr);
 241 
 242         return result;
 243 }
 244 
 245 /**
 246 * Set up the fan table to control the fan using the SMC.
 247 * @param    hwmgr  the address of the powerplay hardware manager.
 248 * @param    pInput the pointer to input data
 249 * @param    pOutput the pointer to output data
 250 * @param    pStorage the pointer to temporary storage
 251 * @param    Result the last failure code
 252 * @return   result from set temperature range routine
 253 */
 254 int vega12_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
 255 {
 256         int ret;
 257         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 258         PPTable_t *table = &(data->smc_state_table.pp_table);
 259 
 260         ret = smum_send_msg_to_smc_with_parameter(hwmgr,
 261                                 PPSMC_MSG_SetFanTemperatureTarget,
 262                                 (uint32_t)table->FanTargetTemperature);
 263 
 264         return ret;
 265 }
 266 
 267 /**
 268 * Start the fan control on the SMC.
 269 * @param    hwmgr  the address of the powerplay hardware manager.
 270 * @param    pInput the pointer to input data
 271 * @param    pOutput the pointer to output data
 272 * @param    pStorage the pointer to temporary storage
 273 * @param    Result the last failure code
 274 * @return   result from set temperature range routine
 275 */
 276 int vega12_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr)
 277 {
 278         /* If the fantable setup has failed we could have disabled
 279          * PHM_PlatformCaps_MicrocodeFanControl even after
 280          * this function was included in the table.
 281          * Make sure that we still think controlling the fan is OK.
 282          */
 283         if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
 284                 vega12_fan_ctrl_start_smc_fan_control(hwmgr);
 285 
 286         return 0;
 287 }
 288 
 289 
 290 int vega12_start_thermal_controller(struct pp_hwmgr *hwmgr,
 291                                 struct PP_TemperatureRange *range)
 292 {
 293         int ret = 0;
 294 
 295         if (range == NULL)
 296                 return -EINVAL;
 297 
 298         ret = vega12_thermal_set_temperature_range(hwmgr, range);
 299         if (ret)
 300                 return -EINVAL;
 301 
 302         vega12_thermal_enable_alert(hwmgr);
 303         /* We should restrict performance levels to low before we halt the SMC.
 304          * On the other hand we are still in boot state when we do this
 305          * so it would be pointless.
 306          * If this assumption changes we have to revisit this table.
 307          */
 308         ret = vega12_thermal_setup_fan_table(hwmgr);
 309         if (ret)
 310                 return -EINVAL;
 311 
 312         vega12_thermal_start_smc_fan_control(hwmgr);
 313 
 314         return 0;
 315 };