diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/therm/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/therm/base.c | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c new file mode 100644 index 0000000..a00a5a7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c @@ -0,0 +1,336 @@ +/* + * 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_fan_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; + + /* do not allow automatic fan management if the thermal sensor is + * not available */ + if (priv->mode == 2 && therm->temp_get(therm) < 0) + return -EINVAL; + + if (priv->mode == mode) + return 0; + + nv_info(therm, "fan 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_fan_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_fan_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_sensor_ctor(therm); + nouveau_therm_ic_ctor(therm); + nouveau_therm_fan_ctor(therm); + + nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_NONE); + nouveau_therm_sensor_preinit(therm); + 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); +} |