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 "pp_soc15.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 -1);
  38         PP_ASSERT_WITH_CODE(!vega12_read_arg_from_smc(hwmgr,
  39                         current_rpm),
  40                         "Attempt to read current RPM from SMC Failed!",
  41                         return -1);
  42         return 0;
  43 }
  44
  45 int vega12_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
  46                 struct phm_fan_speed_info *fan_speed_info)
  47 {
  48         memset(fan_speed_info, 0, sizeof(*fan_speed_info));
  49         fan_speed_info->supports_percent_read = false;
  50         fan_speed_info->supports_percent_write = false;
  51         fan_speed_info->supports_rpm_read = true;
  52         fan_speed_info->supports_rpm_write = true;
  53
  54         return 0;
  55 }
  56
  57 int vega12_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
  58 {
  59         *speed = 0;
  60
  61         return vega12_get_current_rpm(hwmgr, speed);
  62 }
  63
  64 /**
  65  * @fn vega12_enable_fan_control_feature
  66  * @brief Enables the SMC Fan Control Feature.
  67  *
  68  * @param    hwmgr - the address of the powerplay hardware manager.
  69  * @return   0 on success. -1 otherwise.
  70  */
  71 static int vega12_enable_fan_control_feature(struct pp_hwmgr *hwmgr)
  72 {
  73 #if 0
  74         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
  75
  76         if (data->smu_features[GNLD_FAN_CONTROL].supported) {
  77                 PP_ASSERT_WITH_CODE(!vega12_enable_smc_features(
  78                                 hwmgr, true,
  79                                 data->smu_features[GNLD_FAN_CONTROL].
  80                                 smu_feature_bitmap),
  81                                 "Attempt to Enable FAN CONTROL feature Failed!",
  82                                 return -1);
  83                 data->smu_features[GNLD_FAN_CONTROL].enabled = true;
  84         }
  85 #endif
  86         return 0;
  87 }
  88
  89 static int vega12_disable_fan_control_feature(struct pp_hwmgr *hwmgr)
  90 {
  91 #if 0
  92         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
  93
  94         if (data->smu_features[GNLD_FAN_CONTROL].supported) {
  95                 PP_ASSERT_WITH_CODE(!vega12_enable_smc_features(
  96                                 hwmgr, false,
  97                                 data->smu_features[GNLD_FAN_CONTROL].
  98                                 smu_feature_bitmap),
  99                                 "Attempt to Enable FAN CONTROL feature Failed!",
 100                                 return -1);
 101                 data->smu_features[GNLD_FAN_CONTROL].enabled = false;
 102         }
 103 #endif
 104         return 0;
 105 }
 106
 107 int vega12_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
 108 {
 109         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 110
 111         if (data->smu_features[GNLD_FAN_CONTROL].supported)
 112                 PP_ASSERT_WITH_CODE(
 113                                 !vega12_enable_fan_control_feature(hwmgr),
 114                                 "Attempt to Enable SMC FAN CONTROL Feature Failed!",
 115                                 return -1);
 116
 117         return 0;
 118 }
 119
 120
 121 int vega12_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
 122 {
 123         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 124
 125         if (data->smu_features[GNLD_FAN_CONTROL].supported)
 126                 PP_ASSERT_WITH_CODE(!vega12_disable_fan_control_feature(hwmgr),
 127                                 "Attempt to Disable SMC FAN CONTROL Feature Failed!",
 128                                 return -1);
 129
 130         return 0;
 131 }
 132
 133 /**
 134 * Reset Fan Speed to default.
 135 * @param    hwmgr  the address of the powerplay hardware manager.
 136 * @exception Always succeeds.
 137 */
 138 int vega12_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr)
 139 {
 140         return vega12_fan_ctrl_start_smc_fan_control(hwmgr);
 141 }
 142
 143 /**
 144 * Reads the remote temperature from the SIslands thermal controller.
 145 *
 146 * @param    hwmgr The address of the hardware manager.
 147 */
 148 int vega12_thermal_get_temperature(struct pp_hwmgr *hwmgr)
 149 {
 150         int temp = 0;
 151         uint32_t reg;
 152
 153         reg = soc15_get_register_offset(THM_HWID, 0,
 154                         mmCG_MULT_THERMAL_STATUS_BASE_IDX,  mmCG_MULT_THERMAL_STATUS);
 155
 156         temp = cgs_read_register(hwmgr->device, reg);
 157
 158         temp = (temp & CG_MULT_THERMAL_STATUS__CTF_TEMP_MASK) >>
 159                         CG_MULT_THERMAL_STATUS__CTF_TEMP__SHIFT;
 160
 161         temp = temp & 0x1ff;
 162
 163         temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 164         return temp;
 165 }
 166
 167 /**
 168 * Set the requested temperature range for high and low alert signals
 169 *
 170 * @param    hwmgr The address of the hardware manager.
 171 * @param    range Temperature range to be programmed for
 172 *           high and low alert signals
 173 * @exception PP_Result_BadInput if the input data is not valid.
 174 */
 175 static int vega12_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
 176                 struct PP_TemperatureRange *range)
 177 {
 178         int low = VEGA12_THERMAL_MINIMUM_ALERT_TEMP *
 179                         PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 180         int high = VEGA12_THERMAL_MAXIMUM_ALERT_TEMP *
 181                         PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
 182         uint32_t val, reg;
 183
 184         if (low < range->min)
 185                 low = range->min;
 186         if (high > range->max)
 187                 high = range->max;
 188
 189         if (low > high)
 190                 return -EINVAL;
 191
 192         reg = soc15_get_register_offset(THM_HWID, 0,
 193                         mmTHM_THERMAL_INT_CTRL_BASE_IDX, mmTHM_THERMAL_INT_CTRL);
 194
 195         val = cgs_read_register(hwmgr->device, reg);
 196
 197         val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, MAX_IH_CREDIT, 5);
 198         val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, THERM_IH_HW_ENA, 1);
 199         val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTH, (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
 200         val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTL, (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
 201         val = val & (~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK);
 202
 203         cgs_write_register(hwmgr->device, reg, val);
 204
 205         return 0;
 206 }
 207
 208 /**
 209 * Enable thermal alerts on the RV770 thermal controller.
 210 *
 211 * @param    hwmgr The address of the hardware manager.
 212 */
 213 static int vega12_thermal_enable_alert(struct pp_hwmgr *hwmgr)
 214 {
 215         uint32_t val = 0;
 216         uint32_t reg;
 217
 218         val |= (1 << THM_THERMAL_INT_ENA__THERM_INTH_CLR__SHIFT);
 219         val |= (1 << THM_THERMAL_INT_ENA__THERM_INTL_CLR__SHIFT);
 220         val |= (1 << THM_THERMAL_INT_ENA__THERM_TRIGGER_CLR__SHIFT);
 221
 222         reg = soc15_get_register_offset(THM_HWID, 0, mmTHM_THERMAL_INT_ENA_BASE_IDX, mmTHM_THERMAL_INT_ENA);
 223         cgs_write_register(hwmgr->device, reg, val);
 224
 225         return 0;
 226 }
 227
 228 /**
 229 * Disable thermal alerts on the RV770 thermal controller.
 230 * @param    hwmgr The address of the hardware manager.
 231 */
 232 int vega12_thermal_disable_alert(struct pp_hwmgr *hwmgr)
 233 {
 234         uint32_t reg;
 235
 236         reg = soc15_get_register_offset(THM_HWID, 0, mmTHM_THERMAL_INT_ENA_BASE_IDX, mmTHM_THERMAL_INT_ENA);
 237         cgs_write_register(hwmgr->device, reg, 0);
 238
 239         return 0;
 240 }
 241
 242 /**
 243 * Uninitialize the thermal controller.
 244 * Currently just disables alerts.
 245 * @param    hwmgr The address of the hardware manager.
 246 */
 247 int vega12_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
 248 {
 249         int result = vega12_thermal_disable_alert(hwmgr);
 250
 251         return result;
 252 }
 253
 254 /**
 255 * Set up the fan table to control the fan using the SMC.
 256 * @param    hwmgr  the address of the powerplay hardware manager.
 257 * @param    pInput the pointer to input data
 258 * @param    pOutput the pointer to output data
 259 * @param    pStorage the pointer to temporary storage
 260 * @param    Result the last failure code
 261 * @return   result from set temperature range routine
 262 */
 263 int vega12_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
 264 {
 265         int ret;
 266         struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
 267         PPTable_t *table = &(data->smc_state_table.pp_table);
 268
 269         ret = smum_send_msg_to_smc_with_parameter(hwmgr,
 270                                 PPSMC_MSG_SetFanTemperatureTarget,
 271                                 (uint32_t)table->FanTargetTemperature);
 272
 273         return ret;
 274 }
 275
 276 /**
 277 * Start the fan control on the SMC.
 278 * @param    hwmgr  the address of the powerplay hardware manager.
 279 * @param    pInput the pointer to input data
 280 * @param    pOutput the pointer to output data
 281 * @param    pStorage the pointer to temporary storage
 282 * @param    Result the last failure code
 283 * @return   result from set temperature range routine
 284 */
 285 int vega12_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr)
 286 {
 287         /* If the fantable setup has failed we could have disabled
 288          * PHM_PlatformCaps_MicrocodeFanControl even after
 289          * this function was included in the table.
 290          * Make sure that we still think controlling the fan is OK.
 291          */
 292         if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
 293                 vega12_fan_ctrl_start_smc_fan_control(hwmgr);
 294
 295         return 0;
 296 }
 297
 298
 299 int vega12_start_thermal_controller(struct pp_hwmgr *hwmgr,
 300                                 struct PP_TemperatureRange *range)
 301 {
 302         int ret = 0;
 303
 304         if (range == NULL)
 305                 return -EINVAL;
 306
 307         ret = vega12_thermal_set_temperature_range(hwmgr, range);
 308         if (ret)
 309                 return -EINVAL;
 310
 311         vega12_thermal_enable_alert(hwmgr);
 312         /* We should restrict performance levels to low before we halt the SMC.
 313          * On the other hand we are still in boot state when we do this
 314          * so it would be pointless.
 315          * If this assumption changes we have to revisit this table.
 316          */
 317         ret = vega12_thermal_setup_fan_table(hwmgr);
 318         if (ret)
 319                 return -EINVAL;
 320
 321         vega12_thermal_start_smc_fan_control(hwmgr);
 322
 323         return 0;
 324 };