1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
new file mode 100644
index 000000000000..ec327cb64a0d
--- /dev/null
+++ b/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 <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);
+}