2 * Copyright 2016 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
24 #include <asm/div64.h>
25 #include "smu7_thermal.h"
26 #include "smu7_hwmgr.h"
27 #include "smu7_common.h"
29 int smu7_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
30 struct phm_fan_speed_info *fan_speed_info)
32 if (hwmgr->thermal_controller.fanInfo.bNoFan)
35 fan_speed_info->supports_percent_read = true;
36 fan_speed_info->supports_percent_write = true;
37 fan_speed_info->min_percent = 0;
38 fan_speed_info->max_percent = 100;
40 if (PP_CAP(PHM_PlatformCaps_FanSpeedInTableIsRPM) &&
41 hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution) {
42 fan_speed_info->supports_rpm_read = true;
43 fan_speed_info->supports_rpm_write = true;
44 fan_speed_info->min_rpm = hwmgr->thermal_controller.fanInfo.ulMinRPM;
45 fan_speed_info->max_rpm = hwmgr->thermal_controller.fanInfo.ulMaxRPM;
47 fan_speed_info->min_rpm = 0;
48 fan_speed_info->max_rpm = 0;
54 int smu7_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
61 if (hwmgr->thermal_controller.fanInfo.bNoFan)
64 duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
65 CG_FDO_CTRL1, FMAX_DUTY100);
66 duty = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
67 CG_THERMAL_STATUS, FDO_PWM_DUTY);
73 tmp64 = (uint64_t)duty * 100;
74 do_div(tmp64, duty100);
75 *speed = (uint32_t)tmp64;
83 int smu7_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
86 uint32_t crystal_clock_freq;
88 if (hwmgr->thermal_controller.fanInfo.bNoFan ||
89 !hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution)
92 tach_period = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
93 CG_TACH_STATUS, TACH_PERIOD);
98 crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);
100 *speed = 60 * crystal_clock_freq * 10000 / tach_period;
106 * Set Fan Speed Control to static mode, so that the user can decide what speed to use.
107 * @param hwmgr the address of the powerplay hardware manager.
108 * mode the fan control mode, 0 default, 1 by percent, 5, by RPM
109 * @exception Should always succeed.
111 int smu7_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
113 if (hwmgr->fan_ctrl_is_in_default_mode) {
114 hwmgr->fan_ctrl_default_mode =
115 PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
116 CG_FDO_CTRL2, FDO_PWM_MODE);
118 PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
120 hwmgr->fan_ctrl_is_in_default_mode = false;
123 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
124 CG_FDO_CTRL2, TMIN, 0);
125 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
126 CG_FDO_CTRL2, FDO_PWM_MODE, mode);
132 * Reset Fan Speed Control to default mode.
133 * @param hwmgr the address of the powerplay hardware manager.
134 * @exception Should always succeed.
136 int smu7_fan_ctrl_set_default_mode(struct pp_hwmgr *hwmgr)
138 if (!hwmgr->fan_ctrl_is_in_default_mode) {
139 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
140 CG_FDO_CTRL2, FDO_PWM_MODE, hwmgr->fan_ctrl_default_mode);
141 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
142 CG_FDO_CTRL2, TMIN, hwmgr->tmin);
143 hwmgr->fan_ctrl_is_in_default_mode = true;
149 int smu7_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
153 if (PP_CAP(PHM_PlatformCaps_ODFuzzyFanControlSupport)) {
154 result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_StartFanControl,
155 FAN_CONTROL_FUZZY, NULL);
157 if (PP_CAP(PHM_PlatformCaps_FanSpeedInTableIsRPM))
158 hwmgr->hwmgr_func->set_max_fan_rpm_output(hwmgr,
159 hwmgr->thermal_controller.
160 advanceFanControlParameters.usMaxFanRPM);
162 hwmgr->hwmgr_func->set_max_fan_pwm_output(hwmgr,
163 hwmgr->thermal_controller.
164 advanceFanControlParameters.usMaxFanPWM);
167 result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_StartFanControl,
168 FAN_CONTROL_TABLE, NULL);
171 if (!result && hwmgr->thermal_controller.
172 advanceFanControlParameters.ucTargetTemperature)
173 result = smum_send_msg_to_smc_with_parameter(hwmgr,
174 PPSMC_MSG_SetFanTemperatureTarget,
175 hwmgr->thermal_controller.
176 advanceFanControlParameters.ucTargetTemperature,
178 hwmgr->fan_ctrl_enabled = true;
184 int smu7_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
186 hwmgr->fan_ctrl_enabled = false;
187 return smum_send_msg_to_smc(hwmgr, PPSMC_StopFanControl, NULL);
191 * Set Fan Speed in percent.
192 * @param hwmgr the address of the powerplay hardware manager.
193 * @param speed is the percentage value (0% - 100%) to be set.
194 * @exception Fails is the 100% setting appears to be 0.
196 int smu7_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
203 if (hwmgr->thermal_controller.fanInfo.bNoFan)
209 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
210 smu7_fan_ctrl_stop_smc_fan_control(hwmgr);
212 duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
213 CG_FDO_CTRL1, FMAX_DUTY100);
218 tmp64 = (uint64_t)speed * duty100;
220 duty = (uint32_t)tmp64;
222 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
223 CG_FDO_CTRL0, FDO_STATIC_DUTY, duty);
225 return smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
229 * Reset Fan Speed to default.
230 * @param hwmgr the address of the powerplay hardware manager.
231 * @exception Always succeeds.
233 int smu7_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr)
237 if (hwmgr->thermal_controller.fanInfo.bNoFan)
240 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) {
241 result = smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
243 result = smu7_fan_ctrl_start_smc_fan_control(hwmgr);
245 result = smu7_fan_ctrl_set_default_mode(hwmgr);
251 * Set Fan Speed in RPM.
252 * @param hwmgr the address of the powerplay hardware manager.
253 * @param speed is the percentage value (min - max) to be set.
254 * @exception Fails is the speed not lie between min and max.
256 int smu7_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
258 uint32_t tach_period;
259 uint32_t crystal_clock_freq;
261 if (hwmgr->thermal_controller.fanInfo.bNoFan ||
262 (hwmgr->thermal_controller.fanInfo.
263 ucTachometerPulsesPerRevolution == 0) ||
265 (speed < hwmgr->thermal_controller.fanInfo.ulMinRPM) ||
266 (speed > hwmgr->thermal_controller.fanInfo.ulMaxRPM))
269 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
270 smu7_fan_ctrl_stop_smc_fan_control(hwmgr);
272 crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);
274 tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed);
276 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
277 CG_TACH_CTRL, TARGET_PERIOD, tach_period);
279 return smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC_RPM);
283 * Reads the remote temperature from the SIslands thermal controller.
285 * @param hwmgr The address of the hardware manager.
287 int smu7_thermal_get_temperature(struct pp_hwmgr *hwmgr)
291 temp = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
292 CG_MULT_THERMAL_STATUS, CTF_TEMP);
294 /* Bit 9 means the reading is lower than the lowest usable value. */
296 temp = SMU7_THERMAL_MAXIMUM_TEMP_READING;
300 temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
306 * Set the requested temperature range for high and low alert signals
308 * @param hwmgr The address of the hardware manager.
309 * @param range Temperature range to be programmed for high and low alert signals
310 * @exception PP_Result_BadInput if the input data is not valid.
312 static int smu7_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
313 int low_temp, int high_temp)
315 int low = SMU7_THERMAL_MINIMUM_ALERT_TEMP *
316 PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
317 int high = SMU7_THERMAL_MAXIMUM_ALERT_TEMP *
318 PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
322 if (high > high_temp)
328 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
329 CG_THERMAL_INT, DIG_THERM_INTH,
330 (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
331 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
332 CG_THERMAL_INT, DIG_THERM_INTL,
333 (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
334 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
335 CG_THERMAL_CTRL, DIG_THERM_DPM,
336 (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
342 * Programs thermal controller one-time setting registers
344 * @param hwmgr The address of the hardware manager.
346 static int smu7_thermal_initialize(struct pp_hwmgr *hwmgr)
348 if (hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution)
349 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
350 CG_TACH_CTRL, EDGE_PER_REV,
351 hwmgr->thermal_controller.fanInfo.
352 ucTachometerPulsesPerRevolution - 1);
354 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
355 CG_FDO_CTRL2, TACH_PWM_RESP_RATE, 0x28);
361 * Enable thermal alerts on the RV770 thermal controller.
363 * @param hwmgr The address of the hardware manager.
365 static void smu7_thermal_enable_alert(struct pp_hwmgr *hwmgr)
369 alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
370 CG_THERMAL_INT, THERM_INT_MASK);
371 alert &= ~(SMU7_THERMAL_HIGH_ALERT_MASK | SMU7_THERMAL_LOW_ALERT_MASK);
372 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
373 CG_THERMAL_INT, THERM_INT_MASK, alert);
375 /* send message to SMU to enable internal thermal interrupts */
376 smum_send_msg_to_smc(hwmgr, PPSMC_MSG_Thermal_Cntl_Enable, NULL);
380 * Disable thermal alerts on the RV770 thermal controller.
381 * @param hwmgr The address of the hardware manager.
383 int smu7_thermal_disable_alert(struct pp_hwmgr *hwmgr)
387 alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
388 CG_THERMAL_INT, THERM_INT_MASK);
389 alert |= (SMU7_THERMAL_HIGH_ALERT_MASK | SMU7_THERMAL_LOW_ALERT_MASK);
390 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
391 CG_THERMAL_INT, THERM_INT_MASK, alert);
393 /* send message to SMU to disable internal thermal interrupts */
394 return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_Thermal_Cntl_Disable, NULL);
398 * Uninitialize the thermal controller.
399 * Currently just disables alerts.
400 * @param hwmgr The address of the hardware manager.
402 int smu7_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
404 int result = smu7_thermal_disable_alert(hwmgr);
406 if (!hwmgr->thermal_controller.fanInfo.bNoFan)
407 smu7_fan_ctrl_set_default_mode(hwmgr);
413 * Start the fan control on the SMC.
414 * @param hwmgr the address of the powerplay hardware manager.
415 * @param pInput the pointer to input data
416 * @param pOutput the pointer to output data
417 * @param pStorage the pointer to temporary storage
418 * @param Result the last failure code
419 * @return result from set temperature range routine
421 static int smu7_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr)
423 /* If the fantable setup has failed we could have disabled
424 * PHM_PlatformCaps_MicrocodeFanControl even after
425 * this function was included in the table.
426 * Make sure that we still think controlling the fan is OK.
428 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) {
429 smu7_fan_ctrl_start_smc_fan_control(hwmgr);
430 smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
436 int smu7_start_thermal_controller(struct pp_hwmgr *hwmgr,
437 struct PP_TemperatureRange *range)
444 smu7_thermal_initialize(hwmgr);
445 ret = smu7_thermal_set_temperature_range(hwmgr, range->min, range->max);
448 smu7_thermal_enable_alert(hwmgr);
449 ret = smum_thermal_avfs_enable(hwmgr);
453 /* We should restrict performance levels to low before we halt the SMC.
454 * On the other hand we are still in boot state when we do this
455 * so it would be pointless.
456 * If this assumption changes we have to revisit this table.
458 smum_thermal_setup_fan_table(hwmgr);
459 smu7_thermal_start_smc_fan_control(hwmgr);
465 int smu7_thermal_ctrl_uninitialize_thermal_controller(struct pp_hwmgr *hwmgr)
467 if (!hwmgr->thermal_controller.fanInfo.bNoFan)
468 smu7_fan_ctrl_set_default_mode(hwmgr);