--- /dev/null
+/*
+ * 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 <core/device.h>
+
+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);
+}
Code Review / kvmfornfv.git / blobdiff