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

   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 phm_ppt_v3_information *pptable_information =
 174                 (struct phm_ppt_v3_information *)hwmgr->pptable;
 175         struct amdgpu_device *adev = hwmgr->adev;
 176         int low = VEGA12_THERMAL_MINIMUM_ALERT_TEMP *
 177                         PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 178         int high = VEGA12_THERMAL_MAXIMUM_ALERT_TEMP *
 179                         PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 180         uint32_t val;
 181
 182         if (low < range->min)
 183                 low = range->min;
 184         if (high > pptable_information->us_software_shutdown_temp)
 185                 high = pptable_information->us_software_shutdown_temp;
 186
 187         if (low > high)
 188                 return -EINVAL;
 189
 190         val = RREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL);
 191
 192         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, MAX_IH_CREDIT, 5);
 193         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, THERM_IH_HW_ENA, 1);
 194         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTH, (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
 195         val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTL, (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
 196         val = val & (~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK);
 197
 198         WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL, val);
 199
 200         return 0;
 201 }
 202
 203 /**
 204 * Enable thermal alerts on the RV770 thermal controller.
 205 *
 206 * @param    hwmgr The address of the hardware manager.
 207 */
 208 static int vega12_thermal_enable_alert(struct pp_hwmgr *hwmgr)
 209 {
 210         struct amdgpu_device *adev = hwmgr->adev;
 211         uint32_t val = 0;
 212
 213         val |= (1 << THM_THERMAL_INT_ENA__THERM_INTH_CLR__SHIFT);
 214         val |= (1 << THM_THERMAL_INT_ENA__THERM_INTL_CLR__SHIFT);
 215         val |= (1 << THM_THERMAL_INT_ENA__THERM_TRIGGER_CLR__SHIFT);
 216
 217         WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, val);
 218
 219         return 0;
 220 }
 221
 222 /**
 223 * Disable thermal alerts on the RV770 thermal controller.
 224 * @param    hwmgr The address of the hardware manager.
 225 */
 226 int vega12_thermal_disable_alert(struct pp_hwmgr *hwmgr)
 227 {
 228         struct amdgpu_device *adev = hwmgr->adev;
 229
 230         WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, 0);
 231
 232         return 0;
 233 }
 234
 235 /**
 236 * Uninitialize the thermal controller.
 237 * Currently just disables alerts.
 238 * @param    hwmgr The address of the hardware manager.
 239 */
 240 int vega12_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
 241 {
 242         int result = vega12_thermal_disable_alert(hwmgr);
 243
 244         return result;
 245 }
 246
 247 /**
 248 * Set up the fan table to control the fan using the SMC.
 249 * @param    hwmgr  the address of the powerplay hardware manager.
 250 * @param    pInput the pointer to input data
 251 * @param    pOutput the pointer to output data
 252 * @param    pStorage the pointer to temporary storage
 253 * @param    Result the last failure code
 254 * @return   result from set temperature range routine
 255 */
 256 int vega12_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
 257 {
 258         int ret;
 259         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 260         PPTable_t *table = &(data->smc_state_table.pp_table);
 261
 262         ret = smum_send_msg_to_smc_with_parameter(hwmgr,
 263                                 PPSMC_MSG_SetFanTemperatureTarget,
 264                                 (uint32_t)table->FanTargetTemperature);
 265
 266         return ret;
 267 }
 268
 269 /**
 270 * Start the fan control on the SMC.
 271 * @param    hwmgr  the address of the powerplay hardware manager.
 272 * @param    pInput the pointer to input data
 273 * @param    pOutput the pointer to output data
 274 * @param    pStorage the pointer to temporary storage
 275 * @param    Result the last failure code
 276 * @return   result from set temperature range routine
 277 */
 278 int vega12_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr)
 279 {
 280         /* If the fantable setup has failed we could have disabled
 281          * PHM_PlatformCaps_MicrocodeFanControl even after
 282          * this function was included in the table.
 283          * Make sure that we still think controlling the fan is OK.
 284          */
 285         if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
 286                 vega12_fan_ctrl_start_smc_fan_control(hwmgr);
 287
 288         return 0;
 289 }
 290
 291
 292 int vega12_start_thermal_controller(struct pp_hwmgr *hwmgr,
 293                                 struct PP_TemperatureRange *range)
 294 {
 295         int ret = 0;
 296
 297         if (range == NULL)
 298                 return -EINVAL;
 299
 300         ret = vega12_thermal_set_temperature_range(hwmgr, range);
 301         if (ret)
 302                 return -EINVAL;
 303
 304         vega12_thermal_enable_alert(hwmgr);
 305         /* We should restrict performance levels to low before we halt the SMC.
 306          * On the other hand we are still in boot state when we do this
 307          * so it would be pointless.
 308          * If this assumption changes we have to revisit this table.
 309          */
 310         ret = vega12_thermal_setup_fan_table(hwmgr);
 311         if (ret)
 312                 return -EINVAL;
 313
 314         vega12_thermal_start_smc_fan_control(hwmgr);
 315
 316         return 0;
 317 };