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
vega12_get_current_rpm(struct pp_hwmgr * hwmgr,uint32_t * current_rpm)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
vega12_fan_ctrl_get_fan_speed_info(struct pp_hwmgr * hwmgr,struct phm_fan_speed_info * fan_speed_info)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
vega12_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr * hwmgr,uint32_t * speed)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 */
vega12_enable_fan_control_feature(struct pp_hwmgr * hwmgr)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
vega12_disable_fan_control_feature(struct pp_hwmgr * hwmgr)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
vega12_fan_ctrl_start_smc_fan_control(struct pp_hwmgr * hwmgr)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
vega12_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr * hwmgr)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 */
vega12_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr * hwmgr)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 */
vega12_thermal_get_temperature(struct pp_hwmgr * hwmgr)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 */
vega12_thermal_set_temperature_range(struct pp_hwmgr * hwmgr,struct PP_TemperatureRange * range)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 */
vega12_thermal_enable_alert(struct pp_hwmgr * hwmgr)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 */
vega12_thermal_disable_alert(struct pp_hwmgr * hwmgr)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 */
vega12_thermal_stop_thermal_controller(struct pp_hwmgr * hwmgr)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 */
vega12_thermal_setup_fan_table(struct pp_hwmgr * hwmgr)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 */
vega12_thermal_start_smc_fan_control(struct pp_hwmgr * hwmgr)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
vega12_start_thermal_controller(struct pp_hwmgr * hwmgr,struct PP_TemperatureRange * range)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