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 current_rpm), 37 "Attempt to get current RPM from SMC Failed!", 38 return -EINVAL); 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 * vega12_enable_fan_control_feature -Enables the SMC Fan Control Feature. 64 * 65 * @hwmgr: the address of the powerplay hardware manager. 66 * Return: 0 on success. -1 otherwise. 67 */ 68 static int vega12_enable_fan_control_feature(struct pp_hwmgr *hwmgr) 69 { 70 #if 0 71 struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend); 72 73 if (data->smu_features[GNLD_FAN_CONTROL].supported) { 74 PP_ASSERT_WITH_CODE(!vega12_enable_smc_features( 75 hwmgr, true, 76 data->smu_features[GNLD_FAN_CONTROL]. 77 smu_feature_bitmap), 78 "Attempt to Enable FAN CONTROL feature Failed!", 79 return -1); 80 data->smu_features[GNLD_FAN_CONTROL].enabled = true; 81 } 82 #endif 83 return 0; 84 } 85 86 static int vega12_disable_fan_control_feature(struct pp_hwmgr *hwmgr) 87 { 88 #if 0 89 struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend); 90 91 if (data->smu_features[GNLD_FAN_CONTROL].supported) { 92 PP_ASSERT_WITH_CODE(!vega12_enable_smc_features( 93 hwmgr, false, 94 data->smu_features[GNLD_FAN_CONTROL]. 95 smu_feature_bitmap), 96 "Attempt to Enable FAN CONTROL feature Failed!", 97 return -1); 98 data->smu_features[GNLD_FAN_CONTROL].enabled = false; 99 } 100 #endif 101 return 0; 102 } 103 104 int vega12_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr) 105 { 106 struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend); 107 108 if (data->smu_features[GNLD_FAN_CONTROL].supported) 109 PP_ASSERT_WITH_CODE( 110 !vega12_enable_fan_control_feature(hwmgr), 111 "Attempt to Enable SMC FAN CONTROL Feature Failed!", 112 return -1); 113 114 return 0; 115 } 116 117 118 int vega12_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr) 119 { 120 struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend); 121 122 if (data->smu_features[GNLD_FAN_CONTROL].supported) 123 PP_ASSERT_WITH_CODE(!vega12_disable_fan_control_feature(hwmgr), 124 "Attempt to Disable SMC FAN CONTROL Feature Failed!", 125 return -1); 126 127 return 0; 128 } 129 130 /** 131 * vega12_fan_ctrl_reset_fan_speed_to_default - Reset Fan Speed to default. 132 * @hwmgr: the address of the powerplay hardware manager. 133 * Exception Always succeeds. 134 */ 135 int vega12_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr) 136 { 137 return vega12_fan_ctrl_start_smc_fan_control(hwmgr); 138 } 139 140 /** 141 * vega12_thermal_get_temperature - Reads the remote temperature from the SIslands thermal controller. 142 * 143 * @hwmgr: The address of the hardware manager. 144 */ 145 int vega12_thermal_get_temperature(struct pp_hwmgr *hwmgr) 146 { 147 struct amdgpu_device *adev = hwmgr->adev; 148 int temp = 0; 149 150 temp = RREG32_SOC15(THM, 0, mmCG_MULT_THERMAL_STATUS); 151 152 temp = (temp & CG_MULT_THERMAL_STATUS__CTF_TEMP_MASK) >> 153 CG_MULT_THERMAL_STATUS__CTF_TEMP__SHIFT; 154 155 temp = temp & 0x1ff; 156 157 temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES; 158 return temp; 159 } 160 161 /** 162 * vega12_thermal_set_temperature_range - Set the requested temperature range 163 * for high and low alert signals 164 * 165 * @hwmgr: The address of the hardware manager. 166 * @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 int high = VEGA12_THERMAL_MAXIMUM_ALERT_TEMP; 178 uint32_t val; 179 180 /* compare them in unit celsius degree */ 181 if (low < range->min / PP_TEMPERATURE_UNITS_PER_CENTIGRADES) 182 low = range->min / PP_TEMPERATURE_UNITS_PER_CENTIGRADES; 183 if (high > pptable_information->us_software_shutdown_temp) 184 high = pptable_information->us_software_shutdown_temp; 185 186 if (low > high) 187 return -EINVAL; 188 189 val = RREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL); 190 191 val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, MAX_IH_CREDIT, 5); 192 val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, THERM_IH_HW_ENA, 1); 193 val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTH, high); 194 val = REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTL, low); 195 val &= ~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK; 196 val &= ~THM_THERMAL_INT_CTRL__THERM_INTH_MASK_MASK; 197 val &= ~THM_THERMAL_INT_CTRL__THERM_INTL_MASK_MASK; 198 199 WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL, val); 200 201 return 0; 202 } 203 204 /** 205 * vega12_thermal_enable_alert - Enable thermal alerts on the RV770 thermal controller. 206 * 207 * @hwmgr: The address of the hardware manager. 208 */ 209 static int vega12_thermal_enable_alert(struct pp_hwmgr *hwmgr) 210 { 211 struct amdgpu_device *adev = hwmgr->adev; 212 uint32_t val = 0; 213 214 val |= (1 << THM_THERMAL_INT_ENA__THERM_INTH_CLR__SHIFT); 215 val |= (1 << THM_THERMAL_INT_ENA__THERM_INTL_CLR__SHIFT); 216 val |= (1 << THM_THERMAL_INT_ENA__THERM_TRIGGER_CLR__SHIFT); 217 218 WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, val); 219 220 return 0; 221 } 222 223 /** 224 * vega12_thermal_disable_alert - Disable thermal alerts on the RV770 thermal controller. 225 * @hwmgr: The address of the hardware manager. 226 */ 227 int vega12_thermal_disable_alert(struct pp_hwmgr *hwmgr) 228 { 229 struct amdgpu_device *adev = hwmgr->adev; 230 231 WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, 0); 232 233 return 0; 234 } 235 236 /** 237 * vega12_thermal_stop_thermal_controller - Uninitialize the thermal controller. 238 * Currently just disables alerts. 239 * @hwmgr: The address of the hardware manager. 240 */ 241 int vega12_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr) 242 { 243 int result = vega12_thermal_disable_alert(hwmgr); 244 245 return result; 246 } 247 248 /** 249 * vega12_thermal_setup_fan_table - Set up the fan table to control the fan using the SMC. 250 * @hwmgr: the address of the powerplay hardware manager. 251 */ 252 static int vega12_thermal_setup_fan_table(struct pp_hwmgr *hwmgr) 253 { 254 int ret; 255 struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend); 256 PPTable_t *table = &(data->smc_state_table.pp_table); 257 258 ret = smum_send_msg_to_smc_with_parameter(hwmgr, 259 PPSMC_MSG_SetFanTemperatureTarget, 260 (uint32_t)table->FanTargetTemperature, 261 NULL); 262 263 return ret; 264 } 265 266 /** 267 * vega12_thermal_start_smc_fan_control - Start the fan control on the SMC. 268 * @hwmgr: the address of the powerplay hardware manager. 269 * Return: result from set temperature range routine 270 */ 271 static int vega12_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr) 272 { 273 /* If the fantable setup has failed we could have disabled 274 * PHM_PlatformCaps_MicrocodeFanControl even after 275 * this function was included in the table. 276 * Make sure that we still think controlling the fan is OK. 277 */ 278 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) 279 vega12_fan_ctrl_start_smc_fan_control(hwmgr); 280 281 return 0; 282 } 283 284 285 int vega12_start_thermal_controller(struct pp_hwmgr *hwmgr, 286 struct PP_TemperatureRange *range) 287 { 288 int ret = 0; 289 290 if (range == NULL) 291 return -EINVAL; 292 293 ret = vega12_thermal_set_temperature_range(hwmgr, range); 294 if (ret) 295 return -EINVAL; 296 297 vega12_thermal_enable_alert(hwmgr); 298 /* We should restrict performance levels to low before we halt the SMC. 299 * On the other hand we are still in boot state when we do this 300 * so it would be pointless. 301 * If this assumption changes we have to revisit this table. 302 */ 303 ret = vega12_thermal_setup_fan_table(hwmgr); 304 if (ret) 305 return -EINVAL; 306 307 vega12_thermal_start_smc_fan_control(hwmgr); 308 309 return 0; 310 }; 311