X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fsubdev%2Ftherm%2Fbase.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fsubdev%2Ftherm%2Fbase.c;h=ec327cb64a0da679dc836d5fc7f6be3b37c261ee;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c new file mode 100644 index 000000000..ec327cb64 --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c @@ -0,0 +1,367 @@ +/* + * 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 "priv.h" + +#include + +static int +nvkm_therm_update_trip(struct nvkm_therm *therm) +{ + struct nvkm_therm_priv *priv = (void *)therm; + struct nvbios_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 +nvkm_therm_update_linear(struct nvkm_therm *therm) +{ + struct nvkm_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 +nvkm_therm_update(struct nvkm_therm *therm, int mode) +{ + struct nvkm_timer *ptimer = nvkm_timer(therm); + struct nvkm_therm_priv *priv = (void *)therm; + unsigned long flags; + bool immd = true; + bool poll = true; + int duty = -1; + + spin_lock_irqsave(&priv->lock, flags); + if (mode < 0) + mode = priv->mode; + priv->mode = mode; + + switch (mode) { + case NVKM_THERM_CTRL_MANUAL: + ptimer->alarm_cancel(ptimer, &priv->alarm); + duty = nvkm_therm_fan_get(therm); + if (duty < 0) + duty = 100; + poll = false; + break; + case NVKM_THERM_CTRL_AUTO: + switch(priv->fan->bios.fan_mode) { + case NVBIOS_THERM_FAN_TRIP: + duty = nvkm_therm_update_trip(therm); + break; + case NVBIOS_THERM_FAN_LINEAR: + duty = nvkm_therm_update_linear(therm); + break; + case NVBIOS_THERM_FAN_OTHER: + if (priv->cstate) + duty = priv->cstate; + poll = false; + break; + } + immd = false; + break; + case NVKM_THERM_CTRL_NONE: + default: + ptimer->alarm_cancel(ptimer, &priv->alarm); + poll = false; + } + + if (list_empty(&priv->alarm.head) && poll) + ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm); + spin_unlock_irqrestore(&priv->lock, flags); + + if (duty >= 0) { + nv_debug(therm, "FAN target request: %d%%\n", duty); + nvkm_therm_fan_set(therm, immd, duty); + } +} + +int +nvkm_therm_cstate(struct nvkm_therm *ptherm, int fan, int dir) +{ + struct nvkm_therm_priv *priv = (void *)ptherm; + if (!dir || (dir < 0 && fan < priv->cstate) || + (dir > 0 && fan > priv->cstate)) { + nv_debug(ptherm, "default fan speed -> %d%%\n", fan); + priv->cstate = fan; + nvkm_therm_update(ptherm, -1); + } + return 0; +} + +static void +nvkm_therm_alarm(struct nvkm_alarm *alarm) +{ + struct nvkm_therm_priv *priv = + container_of(alarm, struct nvkm_therm_priv, alarm); + nvkm_therm_update(&priv->base, -1); +} + +int +nvkm_therm_fan_mode(struct nvkm_therm *therm, int mode) +{ + struct nvkm_therm_priv *priv = (void *)therm; + struct nvkm_device *device = nv_device(therm); + static const char *name[] = { + "disabled", + "manual", + "automatic" + }; + + /* The default PPWR ucode on fermi interferes with fan management */ + if ((mode >= ARRAY_SIZE(name)) || + (mode != NVKM_THERM_CTRL_NONE && device->card_type >= NV_C0 && + !nvkm_subdev(device, NVDEV_SUBDEV_PMU))) + return -EINVAL; + + /* do not allow automatic fan management if the thermal sensor is + * not available */ + if (mode == NVKM_THERM_CTRL_AUTO && therm->temp_get(therm) < 0) + return -EINVAL; + + if (priv->mode == mode) + return 0; + + nv_info(therm, "fan management: %s\n", name[mode]); + nvkm_therm_update(therm, mode); + return 0; +} + +int +nvkm_therm_attr_get(struct nvkm_therm *therm, + enum nvkm_therm_attr_type type) +{ + struct nvkm_therm_priv *priv = (void *)therm; + + switch (type) { + case NVKM_THERM_ATTR_FAN_MIN_DUTY: + return priv->fan->bios.min_duty; + case NVKM_THERM_ATTR_FAN_MAX_DUTY: + return priv->fan->bios.max_duty; + case NVKM_THERM_ATTR_FAN_MODE: + return priv->mode; + case NVKM_THERM_ATTR_THRS_FAN_BOOST: + return priv->bios_sensor.thrs_fan_boost.temp; + case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST: + return priv->bios_sensor.thrs_fan_boost.hysteresis; + case NVKM_THERM_ATTR_THRS_DOWN_CLK: + return priv->bios_sensor.thrs_down_clock.temp; + case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST: + return priv->bios_sensor.thrs_down_clock.hysteresis; + case NVKM_THERM_ATTR_THRS_CRITICAL: + return priv->bios_sensor.thrs_critical.temp; + case NVKM_THERM_ATTR_THRS_CRITICAL_HYST: + return priv->bios_sensor.thrs_critical.hysteresis; + case NVKM_THERM_ATTR_THRS_SHUTDOWN: + return priv->bios_sensor.thrs_shutdown.temp; + case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST: + return priv->bios_sensor.thrs_shutdown.hysteresis; + } + + return -EINVAL; +} + +int +nvkm_therm_attr_set(struct nvkm_therm *therm, + enum nvkm_therm_attr_type type, int value) +{ + struct nvkm_therm_priv *priv = (void *)therm; + + switch (type) { + case NVKM_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 NVKM_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 NVKM_THERM_ATTR_FAN_MODE: + return nvkm_therm_fan_mode(therm, value); + case NVKM_THERM_ATTR_THRS_FAN_BOOST: + priv->bios_sensor.thrs_fan_boost.temp = value; + priv->sensor.program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST: + priv->bios_sensor.thrs_fan_boost.hysteresis = value; + priv->sensor.program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_DOWN_CLK: + priv->bios_sensor.thrs_down_clock.temp = value; + priv->sensor.program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST: + priv->bios_sensor.thrs_down_clock.hysteresis = value; + priv->sensor.program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_CRITICAL: + priv->bios_sensor.thrs_critical.temp = value; + priv->sensor.program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_CRITICAL_HYST: + priv->bios_sensor.thrs_critical.hysteresis = value; + priv->sensor.program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_SHUTDOWN: + priv->bios_sensor.thrs_shutdown.temp = value; + priv->sensor.program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST: + priv->bios_sensor.thrs_shutdown.hysteresis = value; + priv->sensor.program_alarms(therm); + return 0; + } + + return -EINVAL; +} + +int +_nvkm_therm_init(struct nvkm_object *object) +{ + struct nvkm_therm *therm = (void *)object; + struct nvkm_therm_priv *priv = (void *)therm; + int ret; + + ret = nvkm_subdev_init(&therm->base); + if (ret) + return ret; + + if (priv->suspend >= 0) { + /* restore the pwm value only when on manual or auto mode */ + if (priv->suspend > 0) + nvkm_therm_fan_set(therm, true, priv->fan->percent); + + nvkm_therm_fan_mode(therm, priv->suspend); + } + nvkm_therm_sensor_init(therm); + nvkm_therm_fan_init(therm); + return 0; +} + +int +_nvkm_therm_fini(struct nvkm_object *object, bool suspend) +{ + struct nvkm_therm *therm = (void *)object; + struct nvkm_therm_priv *priv = (void *)therm; + + nvkm_therm_fan_fini(therm, suspend); + nvkm_therm_sensor_fini(therm, suspend); + if (suspend) { + priv->suspend = priv->mode; + priv->mode = NVKM_THERM_CTRL_NONE; + } + + return nvkm_subdev_fini(&therm->base, suspend); +} + +int +nvkm_therm_create_(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, int length, void **pobject) +{ + struct nvkm_therm_priv *priv; + int ret; + + ret = nvkm_subdev_create_(parent, engine, oclass, 0, "PTHERM", + "therm", length, pobject); + priv = *pobject; + if (ret) + return ret; + + nvkm_alarm_init(&priv->alarm, nvkm_therm_alarm); + spin_lock_init(&priv->lock); + spin_lock_init(&priv->sensor.alarm_program_lock); + + priv->base.fan_get = nvkm_therm_fan_user_get; + priv->base.fan_set = nvkm_therm_fan_user_set; + priv->base.fan_sense = nvkm_therm_fan_sense; + priv->base.attr_get = nvkm_therm_attr_get; + priv->base.attr_set = nvkm_therm_attr_set; + priv->mode = priv->suspend = -1; /* undefined */ + return 0; +} + +int +nvkm_therm_preinit(struct nvkm_therm *therm) +{ + nvkm_therm_sensor_ctor(therm); + nvkm_therm_ic_ctor(therm); + nvkm_therm_fan_ctor(therm); + + nvkm_therm_fan_mode(therm, NVKM_THERM_CTRL_AUTO); + nvkm_therm_sensor_preinit(therm); + return 0; +} + +void +_nvkm_therm_dtor(struct nvkm_object *object) +{ + struct nvkm_therm_priv *priv = (void *)object; + kfree(priv->fan); + nvkm_subdev_destroy(&priv->base.base); +}