1 /*
2 * Copyright 2016 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 <asm/div64.h>
25 #include "smu7_thermal.h"
26 #include "smu7_hwmgr.h"
27 #include "smu7_common.h"
28
smu7_fan_ctrl_get_fan_speed_info(struct pp_hwmgr * hwmgr,struct phm_fan_speed_info * fan_speed_info)29 int smu7_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
30 struct phm_fan_speed_info *fan_speed_info)
31 {
32 if (hwmgr->thermal_controller.fanInfo.bNoFan)
33 return -ENODEV;
34
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;
39
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;
46 } else {
47 fan_speed_info->min_rpm = 0;
48 fan_speed_info->max_rpm = 0;
49 }
50
51 return 0;
52 }
53
smu7_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr * hwmgr,uint32_t * speed)54 int smu7_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
55 uint32_t *speed)
56 {
57 uint32_t duty100;
58 uint32_t duty;
59 uint64_t tmp64;
60
61 if (hwmgr->thermal_controller.fanInfo.bNoFan)
62 return -ENODEV;
63
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);
68
69 if (duty100 == 0)
70 return -EINVAL;
71
72
73 tmp64 = (uint64_t)duty * 255;
74 do_div(tmp64, duty100);
75 *speed = min_t(uint32_t, tmp64, 255);
76
77 return 0;
78 }
79
smu7_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr * hwmgr,uint32_t * speed)80 int smu7_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
81 {
82 uint32_t tach_period;
83 uint32_t crystal_clock_freq;
84
85 if (hwmgr->thermal_controller.fanInfo.bNoFan ||
86 !hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution)
87 return -ENODEV;
88
89 tach_period = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
90 CG_TACH_STATUS, TACH_PERIOD);
91
92 if (tach_period == 0)
93 return -EINVAL;
94
95 crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);
96
97 *speed = 60 * crystal_clock_freq * 10000 / tach_period;
98
99 return 0;
100 }
101
102 /**
103 * smu7_fan_ctrl_set_static_mode - Set Fan Speed Control to static mode, so that the user can decide what speed to use.
104 * @hwmgr: the address of the powerplay hardware manager.
105 * @mode: the fan control mode, 0 default, 1 by percent, 5, by RPM
106 * Exception: Should always succeed.
107 */
smu7_fan_ctrl_set_static_mode(struct pp_hwmgr * hwmgr,uint32_t mode)108 int smu7_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
109 {
110 if (hwmgr->fan_ctrl_is_in_default_mode) {
111 hwmgr->fan_ctrl_default_mode =
112 PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
113 CG_FDO_CTRL2, FDO_PWM_MODE);
114 hwmgr->tmin =
115 PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
116 CG_FDO_CTRL2, TMIN);
117 hwmgr->fan_ctrl_is_in_default_mode = false;
118 }
119
120 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
121 CG_FDO_CTRL2, TMIN, 0);
122 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
123 CG_FDO_CTRL2, FDO_PWM_MODE, mode);
124
125 return 0;
126 }
127
128 /**
129 * smu7_fan_ctrl_set_default_mode - Reset Fan Speed Control to default mode.
130 * @hwmgr: the address of the powerplay hardware manager.
131 * Exception: Should always succeed.
132 */
smu7_fan_ctrl_set_default_mode(struct pp_hwmgr * hwmgr)133 int smu7_fan_ctrl_set_default_mode(struct pp_hwmgr *hwmgr)
134 {
135 if (!hwmgr->fan_ctrl_is_in_default_mode) {
136 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
137 CG_FDO_CTRL2, FDO_PWM_MODE, hwmgr->fan_ctrl_default_mode);
138 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
139 CG_FDO_CTRL2, TMIN, hwmgr->tmin);
140 hwmgr->fan_ctrl_is_in_default_mode = true;
141 }
142
143 return 0;
144 }
145
smu7_fan_ctrl_start_smc_fan_control(struct pp_hwmgr * hwmgr)146 int smu7_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
147 {
148 int result;
149
150 if (PP_CAP(PHM_PlatformCaps_ODFuzzyFanControlSupport)) {
151 result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_StartFanControl,
152 FAN_CONTROL_FUZZY, NULL);
153
154 if (PP_CAP(PHM_PlatformCaps_FanSpeedInTableIsRPM))
155 hwmgr->hwmgr_func->set_max_fan_rpm_output(hwmgr,
156 hwmgr->thermal_controller.
157 advanceFanControlParameters.usMaxFanRPM);
158 else
159 hwmgr->hwmgr_func->set_max_fan_pwm_output(hwmgr,
160 hwmgr->thermal_controller.
161 advanceFanControlParameters.usMaxFanPWM);
162
163 } else {
164 result = smum_send_msg_to_smc_with_parameter(hwmgr, PPSMC_StartFanControl,
165 FAN_CONTROL_TABLE, NULL);
166 }
167
168 if (!result && hwmgr->thermal_controller.
169 advanceFanControlParameters.ucTargetTemperature)
170 result = smum_send_msg_to_smc_with_parameter(hwmgr,
171 PPSMC_MSG_SetFanTemperatureTarget,
172 hwmgr->thermal_controller.
173 advanceFanControlParameters.ucTargetTemperature,
174 NULL);
175
176 if (!result &&
177 (hwmgr->chip_id == CHIP_POLARIS10 ||
178 hwmgr->chip_id == CHIP_POLARIS11 ||
179 hwmgr->chip_id == CHIP_POLARIS12) &&
180 hwmgr->thermal_controller.advanceFanControlParameters.ucEnableZeroRPM &&
181 !PP_CAP(PHM_PlatformCaps_customThermalManagement))
182 result = smum_send_msg_to_smc(hwmgr,
183 PPSMC_MSG_EnableZeroRpm,
184 NULL);
185
186 hwmgr->fan_ctrl_enabled = true;
187
188 return result;
189 }
190
191
smu7_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr * hwmgr)192 int smu7_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
193 {
194 hwmgr->fan_ctrl_enabled = false;
195 return smum_send_msg_to_smc(hwmgr, PPSMC_StopFanControl, NULL);
196 }
197
198 /**
199 * smu7_fan_ctrl_set_fan_speed_pwm - Set Fan Speed in PWM.
200 * @hwmgr: the address of the powerplay hardware manager.
201 * @speed: is the pwm value (0 - 255) to be set.
202 */
smu7_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr * hwmgr,uint32_t speed)203 int smu7_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr,
204 uint32_t speed)
205 {
206 uint32_t duty100;
207 uint32_t duty;
208 uint64_t tmp64;
209
210 if (hwmgr->thermal_controller.fanInfo.bNoFan)
211 return 0;
212
213 speed = min_t(uint32_t, speed, 255);
214
215 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
216 smu7_fan_ctrl_stop_smc_fan_control(hwmgr);
217
218 duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
219 CG_FDO_CTRL1, FMAX_DUTY100);
220
221 if (duty100 == 0)
222 return -EINVAL;
223
224 tmp64 = (uint64_t)speed * duty100;
225 do_div(tmp64, 255);
226 duty = (uint32_t)tmp64;
227
228 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
229 CG_FDO_CTRL0, FDO_STATIC_DUTY, duty);
230
231 return smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
232 }
233
234 /**
235 * smu7_fan_ctrl_reset_fan_speed_to_default - Reset Fan Speed to default.
236 * @hwmgr: the address of the powerplay hardware manager.
237 * Exception: Always succeeds.
238 */
smu7_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr * hwmgr)239 int smu7_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr)
240 {
241 int result;
242
243 if (hwmgr->thermal_controller.fanInfo.bNoFan)
244 return 0;
245
246 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) {
247 result = smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
248 if (!result)
249 result = smu7_fan_ctrl_start_smc_fan_control(hwmgr);
250 } else
251 result = smu7_fan_ctrl_set_default_mode(hwmgr);
252
253 return result;
254 }
255
256 /**
257 * smu7_fan_ctrl_set_fan_speed_rpm - Set Fan Speed in RPM.
258 * @hwmgr: the address of the powerplay hardware manager.
259 * @speed: is the percentage value (min - max) to be set.
260 * Exception: Fails is the speed not lie between min and max.
261 */
smu7_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr * hwmgr,uint32_t speed)262 int smu7_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
263 {
264 uint32_t tach_period;
265 uint32_t crystal_clock_freq;
266
267 if (hwmgr->thermal_controller.fanInfo.bNoFan ||
268 (hwmgr->thermal_controller.fanInfo.
269 ucTachometerPulsesPerRevolution == 0) ||
270 speed == 0 ||
271 (speed < hwmgr->thermal_controller.fanInfo.ulMinRPM) ||
272 (speed > hwmgr->thermal_controller.fanInfo.ulMaxRPM))
273 return 0;
274
275 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
276 smu7_fan_ctrl_stop_smc_fan_control(hwmgr);
277
278 crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);
279
280 tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed);
281
282 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
283 CG_TACH_CTRL, TARGET_PERIOD, tach_period);
284
285 return smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC_RPM);
286 }
287
288 /**
289 * smu7_thermal_get_temperature - Reads the remote temperature from the SIslands thermal controller.
290 *
291 * @hwmgr: The address of the hardware manager.
292 */
smu7_thermal_get_temperature(struct pp_hwmgr * hwmgr)293 int smu7_thermal_get_temperature(struct pp_hwmgr *hwmgr)
294 {
295 int temp;
296
297 temp = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
298 CG_MULT_THERMAL_STATUS, CTF_TEMP);
299
300 /* Bit 9 means the reading is lower than the lowest usable value. */
301 if (temp & 0x200)
302 temp = SMU7_THERMAL_MAXIMUM_TEMP_READING;
303 else
304 temp = temp & 0x1ff;
305
306 temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
307
308 return temp;
309 }
310
311 /**
312 * smu7_thermal_set_temperature_range - Set the requested temperature range for high and low alert signals
313 *
314 * @hwmgr: The address of the hardware manager.
315 * @low_temp: Temperature to be programmed for high alert signals
316 * @high_temp: Temperature to be programmed for low alert signals
317 * Exception: PP_Result_BadInput if the input data is not valid.
318 */
smu7_thermal_set_temperature_range(struct pp_hwmgr * hwmgr,int low_temp,int high_temp)319 static int smu7_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
320 int low_temp, int high_temp)
321 {
322 int low = SMU7_THERMAL_MINIMUM_ALERT_TEMP *
323 PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
324 int high = SMU7_THERMAL_MAXIMUM_ALERT_TEMP *
325 PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
326
327 if (low < low_temp)
328 low = low_temp;
329 if (high > high_temp)
330 high = high_temp;
331
332 if (low > high)
333 return -EINVAL;
334
335 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
336 CG_THERMAL_INT, DIG_THERM_INTH,
337 (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
338 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
339 CG_THERMAL_INT, DIG_THERM_INTL,
340 (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
341 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
342 CG_THERMAL_CTRL, DIG_THERM_DPM,
343 (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
344
345 return 0;
346 }
347
348 /**
349 * smu7_thermal_initialize - Programs thermal controller one-time setting registers
350 *
351 * @hwmgr: The address of the hardware manager.
352 */
smu7_thermal_initialize(struct pp_hwmgr * hwmgr)353 static int smu7_thermal_initialize(struct pp_hwmgr *hwmgr)
354 {
355 if (hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution)
356 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
357 CG_TACH_CTRL, EDGE_PER_REV,
358 hwmgr->thermal_controller.fanInfo.
359 ucTachometerPulsesPerRevolution - 1);
360
361 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
362 CG_FDO_CTRL2, TACH_PWM_RESP_RATE, 0x28);
363
364 return 0;
365 }
366
367 /**
368 * smu7_thermal_enable_alert - Enable thermal alerts on the RV770 thermal controller.
369 *
370 * @hwmgr: The address of the hardware manager.
371 */
smu7_thermal_enable_alert(struct pp_hwmgr * hwmgr)372 static void smu7_thermal_enable_alert(struct pp_hwmgr *hwmgr)
373 {
374 uint32_t alert;
375
376 alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
377 CG_THERMAL_INT, THERM_INT_MASK);
378 alert &= ~(SMU7_THERMAL_HIGH_ALERT_MASK | SMU7_THERMAL_LOW_ALERT_MASK);
379 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
380 CG_THERMAL_INT, THERM_INT_MASK, alert);
381
382 /* send message to SMU to enable internal thermal interrupts */
383 smum_send_msg_to_smc(hwmgr, PPSMC_MSG_Thermal_Cntl_Enable, NULL);
384 }
385
386 /**
387 * smu7_thermal_disable_alert - Disable thermal alerts on the RV770 thermal controller.
388 * @hwmgr: The address of the hardware manager.
389 */
smu7_thermal_disable_alert(struct pp_hwmgr * hwmgr)390 int smu7_thermal_disable_alert(struct pp_hwmgr *hwmgr)
391 {
392 uint32_t alert;
393
394 alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
395 CG_THERMAL_INT, THERM_INT_MASK);
396 alert |= (SMU7_THERMAL_HIGH_ALERT_MASK | SMU7_THERMAL_LOW_ALERT_MASK);
397 PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
398 CG_THERMAL_INT, THERM_INT_MASK, alert);
399
400 /* send message to SMU to disable internal thermal interrupts */
401 return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_Thermal_Cntl_Disable, NULL);
402 }
403
404 /**
405 * smu7_thermal_stop_thermal_controller - Uninitialize the thermal controller.
406 * Currently just disables alerts.
407 * @hwmgr: The address of the hardware manager.
408 */
smu7_thermal_stop_thermal_controller(struct pp_hwmgr * hwmgr)409 int smu7_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
410 {
411 int result = smu7_thermal_disable_alert(hwmgr);
412
413 if (!hwmgr->thermal_controller.fanInfo.bNoFan)
414 smu7_fan_ctrl_set_default_mode(hwmgr);
415
416 return result;
417 }
418
419 /**
420 * smu7_thermal_start_smc_fan_control - Start the fan control on the SMC.
421 * @hwmgr: the address of the powerplay hardware manager.
422 * Return: result from set temperature range routine
423 */
smu7_thermal_start_smc_fan_control(struct pp_hwmgr * hwmgr)424 static int smu7_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr)
425 {
426 /* If the fantable setup has failed we could have disabled
427 * PHM_PlatformCaps_MicrocodeFanControl even after
428 * this function was included in the table.
429 * Make sure that we still think controlling the fan is OK.
430 */
431 if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) {
432 smu7_fan_ctrl_start_smc_fan_control(hwmgr);
433 smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
434 }
435
436 return 0;
437 }
438
smu7_start_thermal_controller(struct pp_hwmgr * hwmgr,struct PP_TemperatureRange * range)439 int smu7_start_thermal_controller(struct pp_hwmgr *hwmgr,
440 struct PP_TemperatureRange *range)
441 {
442 int ret = 0;
443
444 if (range == NULL)
445 return -EINVAL;
446
447 smu7_thermal_initialize(hwmgr);
448 ret = smu7_thermal_set_temperature_range(hwmgr, range->min, range->max);
449 if (ret)
450 return -EINVAL;
451 smu7_thermal_enable_alert(hwmgr);
452 ret = smum_thermal_avfs_enable(hwmgr);
453 if (ret)
454 return -EINVAL;
455
456 /* We should restrict performance levels to low before we halt the SMC.
457 * On the other hand we are still in boot state when we do this
458 * so it would be pointless.
459 * If this assumption changes we have to revisit this table.
460 */
461 smum_thermal_setup_fan_table(hwmgr);
462 smu7_thermal_start_smc_fan_control(hwmgr);
463 return 0;
464 }
465
466
467
smu7_thermal_ctrl_uninitialize_thermal_controller(struct pp_hwmgr * hwmgr)468 int smu7_thermal_ctrl_uninitialize_thermal_controller(struct pp_hwmgr *hwmgr)
469 {
470 if (!hwmgr->thermal_controller.fanInfo.bNoFan)
471 smu7_fan_ctrl_set_default_mode(hwmgr);
472 return 0;
473 }
474
475