| /* |
| * Copyright 2012 The Nouveau community |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Martin Peres |
| */ |
| |
| #include <core/object.h> |
| #include <core/device.h> |
| |
| #include <subdev/bios.h> |
| |
| #include "priv.h" |
| |
| static int |
| nouveau_therm_update_trip(struct nouveau_therm *therm) |
| { |
| struct nouveau_therm_priv *priv = (void *)therm; |
| struct nouveau_therm_trip_point *trip = priv->fan->bios.trip, |
| *cur_trip = NULL, |
| *last_trip = priv->last_trip; |
| u8 temp = therm->temp_get(therm); |
| u16 duty, i; |
| |
| /* look for the trip point corresponding to the current temperature */ |
| cur_trip = NULL; |
| for (i = 0; i < priv->fan->bios.nr_fan_trip; i++) { |
| if (temp >= trip[i].temp) |
| cur_trip = &trip[i]; |
| } |
| |
| /* account for the hysteresis cycle */ |
| if (last_trip && temp <= (last_trip->temp) && |
| temp > (last_trip->temp - last_trip->hysteresis)) |
| cur_trip = last_trip; |
| |
| if (cur_trip) { |
| duty = cur_trip->fan_duty; |
| priv->last_trip = cur_trip; |
| } else { |
| duty = 0; |
| priv->last_trip = NULL; |
| } |
| |
| return duty; |
| } |
| |
| static int |
| nouveau_therm_update_linear(struct nouveau_therm *therm) |
| { |
| struct nouveau_therm_priv *priv = (void *)therm; |
| u8 linear_min_temp = priv->fan->bios.linear_min_temp; |
| u8 linear_max_temp = priv->fan->bios.linear_max_temp; |
| u8 temp = therm->temp_get(therm); |
| u16 duty; |
| |
| /* handle the non-linear part first */ |
| if (temp < linear_min_temp) |
| return priv->fan->bios.min_duty; |
| else if (temp > linear_max_temp) |
| return priv->fan->bios.max_duty; |
| |
| /* we are in the linear zone */ |
| duty = (temp - linear_min_temp); |
| duty *= (priv->fan->bios.max_duty - priv->fan->bios.min_duty); |
| duty /= (linear_max_temp - linear_min_temp); |
| duty += priv->fan->bios.min_duty; |
| |
| return duty; |
| } |
| |
| static void |
| nouveau_therm_update(struct nouveau_therm *therm, int mode) |
| { |
| struct nouveau_timer *ptimer = nouveau_timer(therm); |
| struct nouveau_therm_priv *priv = (void *)therm; |
| unsigned long flags; |
| int duty; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| if (mode < 0) |
| mode = priv->mode; |
| priv->mode = mode; |
| |
| switch (mode) { |
| case NOUVEAU_THERM_CTRL_MANUAL: |
| duty = nouveau_therm_fan_get(therm); |
| if (duty < 0) |
| duty = 100; |
| break; |
| case NOUVEAU_THERM_CTRL_AUTO: |
| if (priv->fan->bios.nr_fan_trip) |
| duty = nouveau_therm_update_trip(therm); |
| else |
| duty = nouveau_therm_update_linear(therm); |
| break; |
| case NOUVEAU_THERM_CTRL_NONE: |
| default: |
| goto done; |
| } |
| |
| nv_debug(therm, "FAN target request: %d%%\n", duty); |
| nouveau_therm_fan_set(therm, (mode != NOUVEAU_THERM_CTRL_AUTO), duty); |
| |
| done: |
| if (list_empty(&priv->alarm.head) && (mode == NOUVEAU_THERM_CTRL_AUTO)) |
| ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| static void |
| nouveau_therm_alarm(struct nouveau_alarm *alarm) |
| { |
| struct nouveau_therm_priv *priv = |
| container_of(alarm, struct nouveau_therm_priv, alarm); |
| nouveau_therm_update(&priv->base, -1); |
| } |
| |
| int |
| nouveau_therm_mode(struct nouveau_therm *therm, int mode) |
| { |
| struct nouveau_therm_priv *priv = (void *)therm; |
| struct nouveau_device *device = nv_device(therm); |
| static const char *name[] = { |
| "disabled", |
| "manual", |
| "automatic" |
| }; |
| |
| /* The default PDAEMON ucode interferes with fan management */ |
| if ((mode >= ARRAY_SIZE(name)) || |
| (mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0)) |
| return -EINVAL; |
| |
| if (priv->mode == mode) |
| return 0; |
| |
| nv_info(therm, "Thermal management: %s\n", name[mode]); |
| nouveau_therm_update(therm, mode); |
| return 0; |
| } |
| |
| int |
| nouveau_therm_attr_get(struct nouveau_therm *therm, |
| enum nouveau_therm_attr_type type) |
| { |
| struct nouveau_therm_priv *priv = (void *)therm; |
| |
| switch (type) { |
| case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY: |
| return priv->fan->bios.min_duty; |
| case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY: |
| return priv->fan->bios.max_duty; |
| case NOUVEAU_THERM_ATTR_FAN_MODE: |
| return priv->mode; |
| case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST: |
| return priv->bios_sensor.thrs_fan_boost.temp; |
| case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST: |
| return priv->bios_sensor.thrs_fan_boost.hysteresis; |
| case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK: |
| return priv->bios_sensor.thrs_down_clock.temp; |
| case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST: |
| return priv->bios_sensor.thrs_down_clock.hysteresis; |
| case NOUVEAU_THERM_ATTR_THRS_CRITICAL: |
| return priv->bios_sensor.thrs_critical.temp; |
| case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST: |
| return priv->bios_sensor.thrs_critical.hysteresis; |
| case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN: |
| return priv->bios_sensor.thrs_shutdown.temp; |
| case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST: |
| return priv->bios_sensor.thrs_shutdown.hysteresis; |
| } |
| |
| return -EINVAL; |
| } |
| |
| int |
| nouveau_therm_attr_set(struct nouveau_therm *therm, |
| enum nouveau_therm_attr_type type, int value) |
| { |
| struct nouveau_therm_priv *priv = (void *)therm; |
| |
| switch (type) { |
| case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY: |
| if (value < 0) |
| value = 0; |
| if (value > priv->fan->bios.max_duty) |
| value = priv->fan->bios.max_duty; |
| priv->fan->bios.min_duty = value; |
| return 0; |
| case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY: |
| if (value < 0) |
| value = 0; |
| if (value < priv->fan->bios.min_duty) |
| value = priv->fan->bios.min_duty; |
| priv->fan->bios.max_duty = value; |
| return 0; |
| case NOUVEAU_THERM_ATTR_FAN_MODE: |
| return nouveau_therm_mode(therm, value); |
| case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST: |
| priv->bios_sensor.thrs_fan_boost.temp = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST: |
| priv->bios_sensor.thrs_fan_boost.hysteresis = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK: |
| priv->bios_sensor.thrs_down_clock.temp = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST: |
| priv->bios_sensor.thrs_down_clock.hysteresis = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| case NOUVEAU_THERM_ATTR_THRS_CRITICAL: |
| priv->bios_sensor.thrs_critical.temp = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST: |
| priv->bios_sensor.thrs_critical.hysteresis = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN: |
| priv->bios_sensor.thrs_shutdown.temp = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST: |
| priv->bios_sensor.thrs_shutdown.hysteresis = value; |
| priv->sensor.program_alarms(therm); |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| int |
| _nouveau_therm_init(struct nouveau_object *object) |
| { |
| struct nouveau_therm *therm = (void *)object; |
| struct nouveau_therm_priv *priv = (void *)therm; |
| int ret; |
| |
| ret = nouveau_subdev_init(&therm->base); |
| if (ret) |
| return ret; |
| |
| if (priv->suspend >= 0) |
| nouveau_therm_mode(therm, priv->mode); |
| priv->sensor.program_alarms(therm); |
| return 0; |
| } |
| |
| int |
| _nouveau_therm_fini(struct nouveau_object *object, bool suspend) |
| { |
| struct nouveau_therm *therm = (void *)object; |
| struct nouveau_therm_priv *priv = (void *)therm; |
| |
| if (suspend) { |
| priv->suspend = priv->mode; |
| priv->mode = NOUVEAU_THERM_CTRL_NONE; |
| } |
| |
| return nouveau_subdev_fini(&therm->base, suspend); |
| } |
| |
| int |
| nouveau_therm_create_(struct nouveau_object *parent, |
| struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, |
| int length, void **pobject) |
| { |
| struct nouveau_therm_priv *priv; |
| int ret; |
| |
| ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PTHERM", |
| "therm", length, pobject); |
| priv = *pobject; |
| if (ret) |
| return ret; |
| |
| nouveau_alarm_init(&priv->alarm, nouveau_therm_alarm); |
| spin_lock_init(&priv->lock); |
| spin_lock_init(&priv->sensor.alarm_program_lock); |
| |
| priv->base.fan_get = nouveau_therm_fan_user_get; |
| priv->base.fan_set = nouveau_therm_fan_user_set; |
| priv->base.fan_sense = nouveau_therm_fan_sense; |
| priv->base.attr_get = nouveau_therm_attr_get; |
| priv->base.attr_set = nouveau_therm_attr_set; |
| priv->mode = priv->suspend = -1; /* undefined */ |
| return 0; |
| } |
| |
| int |
| nouveau_therm_preinit(struct nouveau_therm *therm) |
| { |
| nouveau_therm_ic_ctor(therm); |
| nouveau_therm_sensor_ctor(therm); |
| nouveau_therm_fan_ctor(therm); |
| |
| nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_NONE); |
| return 0; |
| } |
| |
| void |
| _nouveau_therm_dtor(struct nouveau_object *object) |
| { |
| struct nouveau_therm_priv *priv = (void *)object; |
| kfree(priv->fan); |
| nouveau_subdev_destroy(&priv->base.base); |
| } |