1 files changed, 455 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 000000000..fc5ee118e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
@@ -0,0 +1,455 @@
+/*
+ * 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/option.h>
+#include <subdev/pmu.h>
+
+int
+nvkm_therm_temp_get(struct nvkm_therm *therm)
+{
+	if (therm->func->temp_get)
+		return therm->func->temp_get(therm);
+	return -ENODEV;
+}
+
+static int
+nvkm_therm_update_trip(struct nvkm_therm *therm)
+{
+	struct nvbios_therm_trip_point *trip = therm->fan->bios.trip,
+				       *cur_trip = NULL,
+				       *last_trip = therm->last_trip;
+	u8  temp = therm->func->temp_get(therm);
+	u16 duty, i;
+
+	/* look for the trip point corresponding to the current temperature */
+	cur_trip = NULL;
+	for (i = 0; i < therm->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;
+		therm->last_trip = cur_trip;
+	} else {
+		duty = 0;
+		therm->last_trip = NULL;
+	}
+
+	return duty;
+}
+
+static int
+nvkm_therm_compute_linear_duty(struct nvkm_therm *therm, u8 linear_min_temp,
+                               u8 linear_max_temp)
+{
+	u8  temp = therm->func->temp_get(therm);
+	u16 duty;
+
+	/* handle the non-linear part first */
+	if (temp < linear_min_temp)
+		return therm->fan->bios.min_duty;
+	else if (temp > linear_max_temp)
+		return therm->fan->bios.max_duty;
+
+	/* we are in the linear zone */
+	duty  = (temp - linear_min_temp);
+	duty *= (therm->fan->bios.max_duty - therm->fan->bios.min_duty);
+	duty /= (linear_max_temp - linear_min_temp);
+	duty += therm->fan->bios.min_duty;
+	return duty;
+}
+
+static int
+nvkm_therm_update_linear(struct nvkm_therm *therm)
+{
+	u8  min = therm->fan->bios.linear_min_temp;
+	u8  max = therm->fan->bios.linear_max_temp;
+	return nvkm_therm_compute_linear_duty(therm, min, max);
+}
+
+static int
+nvkm_therm_update_linear_fallback(struct nvkm_therm *therm)
+{
+	u8 max = therm->bios_sensor.thrs_fan_boost.temp;
+	return nvkm_therm_compute_linear_duty(therm, 30, max);
+}
+
+static void
+nvkm_therm_update(struct nvkm_therm *therm, int mode)
+{
+	struct nvkm_subdev *subdev = &therm->subdev;
+	struct nvkm_timer *tmr = subdev->device->timer;
+	unsigned long flags;
+	bool immd = true;
+	bool poll = true;
+	int duty = -1;
+
+	spin_lock_irqsave(&therm->lock, flags);
+	if (mode < 0)
+		mode = therm->mode;
+	therm->mode = mode;
+
+	switch (mode) {
+	case NVKM_THERM_CTRL_MANUAL:
+		nvkm_timer_alarm(tmr, 0, &therm->alarm);
+		duty = nvkm_therm_fan_get(therm);
+		if (duty < 0)
+			duty = 100;
+		poll = false;
+		break;
+	case NVKM_THERM_CTRL_AUTO:
+		switch(therm->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 (therm->cstate) {
+				duty = therm->cstate;
+				poll = false;
+			} else {
+				duty = nvkm_therm_update_linear_fallback(therm);
+			}
+			break;
+		}
+		immd = false;
+		break;
+	case NVKM_THERM_CTRL_NONE:
+	default:
+		nvkm_timer_alarm(tmr, 0, &therm->alarm);
+		poll = false;
+	}
+
+	if (poll)
+		nvkm_timer_alarm(tmr, 1000000000ULL, &therm->alarm);
+	spin_unlock_irqrestore(&therm->lock, flags);
+
+	if (duty >= 0) {
+		nvkm_debug(subdev, "FAN target request: %d%%\n", duty);
+		nvkm_therm_fan_set(therm, immd, duty);
+	}
+}
+
+int
+nvkm_therm_cstate(struct nvkm_therm *therm, int fan, int dir)
+{
+	struct nvkm_subdev *subdev = &therm->subdev;
+	if (!dir || (dir < 0 && fan < therm->cstate) ||
+		    (dir > 0 && fan > therm->cstate)) {
+		nvkm_debug(subdev, "default fan speed -> %d%%\n", fan);
+		therm->cstate = fan;
+		nvkm_therm_update(therm, -1);
+	}
+	return 0;
+}
+
+static void
+nvkm_therm_alarm(struct nvkm_alarm *alarm)
+{
+	struct nvkm_therm *therm =
+	       container_of(alarm, struct nvkm_therm, alarm);
+	nvkm_therm_update(therm, -1);
+}
+
+int
+nvkm_therm_fan_mode(struct nvkm_therm *therm, int mode)
+{
+	struct nvkm_subdev *subdev = &therm->subdev;
+	struct nvkm_device *device = subdev->device;
+	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 && nvkm_pmu_fan_controlled(device)))
+		return -EINVAL;
+
+	/* do not allow automatic fan management if the thermal sensor is
+	 * not available */
+	if (mode == NVKM_THERM_CTRL_AUTO &&
+	    therm->func->temp_get(therm) < 0)
+		return -EINVAL;
+
+	if (therm->mode == mode)
+		return 0;
+
+	nvkm_debug(subdev, "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)
+{
+	switch (type) {
+	case NVKM_THERM_ATTR_FAN_MIN_DUTY:
+		return therm->fan->bios.min_duty;
+	case NVKM_THERM_ATTR_FAN_MAX_DUTY:
+		return therm->fan->bios.max_duty;
+	case NVKM_THERM_ATTR_FAN_MODE:
+		return therm->mode;
+	case NVKM_THERM_ATTR_THRS_FAN_BOOST:
+		return therm->bios_sensor.thrs_fan_boost.temp;
+	case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST:
+		return therm->bios_sensor.thrs_fan_boost.hysteresis;
+	case NVKM_THERM_ATTR_THRS_DOWN_CLK:
+		return therm->bios_sensor.thrs_down_clock.temp;
+	case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST:
+		return therm->bios_sensor.thrs_down_clock.hysteresis;
+	case NVKM_THERM_ATTR_THRS_CRITICAL:
+		return therm->bios_sensor.thrs_critical.temp;
+	case NVKM_THERM_ATTR_THRS_CRITICAL_HYST:
+		return therm->bios_sensor.thrs_critical.hysteresis;
+	case NVKM_THERM_ATTR_THRS_SHUTDOWN:
+		return therm->bios_sensor.thrs_shutdown.temp;
+	case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST:
+		return therm->bios_sensor.thrs_shutdown.hysteresis;
+	}
+
+	return -EINVAL;
+}
+
+int
+nvkm_therm_attr_set(struct nvkm_therm *therm,
+		    enum nvkm_therm_attr_type type, int value)
+{
+	switch (type) {
+	case NVKM_THERM_ATTR_FAN_MIN_DUTY:
+		if (value < 0)
+			value = 0;
+		if (value > therm->fan->bios.max_duty)
+			value = therm->fan->bios.max_duty;
+		therm->fan->bios.min_duty = value;
+		return 0;
+	case NVKM_THERM_ATTR_FAN_MAX_DUTY:
+		if (value < 0)
+			value = 0;
+		if (value < therm->fan->bios.min_duty)
+			value = therm->fan->bios.min_duty;
+		therm->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:
+		therm->bios_sensor.thrs_fan_boost.temp = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST:
+		therm->bios_sensor.thrs_fan_boost.hysteresis = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	case NVKM_THERM_ATTR_THRS_DOWN_CLK:
+		therm->bios_sensor.thrs_down_clock.temp = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST:
+		therm->bios_sensor.thrs_down_clock.hysteresis = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	case NVKM_THERM_ATTR_THRS_CRITICAL:
+		therm->bios_sensor.thrs_critical.temp = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	case NVKM_THERM_ATTR_THRS_CRITICAL_HYST:
+		therm->bios_sensor.thrs_critical.hysteresis = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	case NVKM_THERM_ATTR_THRS_SHUTDOWN:
+		therm->bios_sensor.thrs_shutdown.temp = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST:
+		therm->bios_sensor.thrs_shutdown.hysteresis = value;
+		therm->func->program_alarms(therm);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+void
+nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
+{
+	if (!therm || !therm->func->clkgate_enable || !therm->clkgating_enabled)
+		return;
+
+	nvkm_debug(&therm->subdev,
+		   "Enabling clockgating\n");
+	therm->func->clkgate_enable(therm);
+}
+
+void
+nvkm_therm_clkgate_fini(struct nvkm_therm *therm, bool suspend)
+{
+	if (!therm || !therm->func->clkgate_fini || !therm->clkgating_enabled)
+		return;
+
+	nvkm_debug(&therm->subdev,
+		   "Preparing clockgating for %s\n",
+		   suspend ? "suspend" : "fini");
+	therm->func->clkgate_fini(therm, suspend);
+}
+
+static void
+nvkm_therm_clkgate_oneinit(struct nvkm_therm *therm)
+{
+	if (!therm->func->clkgate_enable || !therm->clkgating_enabled)
+		return;
+
+	nvkm_info(&therm->subdev, "Clockgating enabled\n");
+}
+
+static void
+nvkm_therm_intr(struct nvkm_subdev *subdev)
+{
+	struct nvkm_therm *therm = nvkm_therm(subdev);
+	if (therm->func->intr)
+		therm->func->intr(therm);
+}
+
+static int
+nvkm_therm_fini(struct nvkm_subdev *subdev, bool suspend)
+{
+	struct nvkm_therm *therm = nvkm_therm(subdev);
+
+	if (therm->func->fini)
+		therm->func->fini(therm);
+
+	nvkm_therm_fan_fini(therm, suspend);
+	nvkm_therm_sensor_fini(therm, suspend);
+
+	if (suspend) {
+		therm->suspend = therm->mode;
+		therm->mode = NVKM_THERM_CTRL_NONE;
+	}
+
+	return 0;
+}
+
+static int
+nvkm_therm_oneinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_therm *therm = nvkm_therm(subdev);
+	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);
+	nvkm_therm_clkgate_oneinit(therm);
+	return 0;
+}
+
+static int
+nvkm_therm_init(struct nvkm_subdev *subdev)
+{
+	struct nvkm_therm *therm = nvkm_therm(subdev);
+
+	if (therm->func->init)
+		therm->func->init(therm);
+
+	if (therm->suspend >= 0) {
+		/* restore the pwm value only when on manual or auto mode */
+		if (therm->suspend > 0)
+			nvkm_therm_fan_set(therm, true, therm->fan->percent);
+
+		nvkm_therm_fan_mode(therm, therm->suspend);
+	}
+
+	nvkm_therm_sensor_init(therm);
+	nvkm_therm_fan_init(therm);
+	return 0;
+}
+
+void
+nvkm_therm_clkgate_init(struct nvkm_therm *therm,
+			const struct nvkm_therm_clkgate_pack *p)
+{
+	if (!therm || !therm->func->clkgate_init || !therm->clkgating_enabled)
+		return;
+
+	therm->func->clkgate_init(therm, p);
+}
+
+static void *
+nvkm_therm_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_therm *therm = nvkm_therm(subdev);
+	kfree(therm->fan);
+	return therm;
+}
+
+static const struct nvkm_subdev_func
+nvkm_therm = {
+	.dtor = nvkm_therm_dtor,
+	.oneinit = nvkm_therm_oneinit,
+	.init = nvkm_therm_init,
+	.fini = nvkm_therm_fini,
+	.intr = nvkm_therm_intr,
+};
+
+void
+nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device, enum nvkm_subdev_type type,
+		int inst, const struct nvkm_therm_func *func)
+{
+	nvkm_subdev_ctor(&nvkm_therm, device, type, inst, &therm->subdev);
+	therm->func = func;
+
+	nvkm_alarm_init(&therm->alarm, nvkm_therm_alarm);
+	spin_lock_init(&therm->lock);
+	spin_lock_init(&therm->sensor.alarm_program_lock);
+
+	therm->fan_get = nvkm_therm_fan_user_get;
+	therm->fan_set = nvkm_therm_fan_user_set;
+	therm->attr_get = nvkm_therm_attr_get;
+	therm->attr_set = nvkm_therm_attr_set;
+	therm->mode = therm->suspend = -1; /* undefined */
+
+	therm->clkgating_enabled = nvkm_boolopt(device->cfgopt,
+						"NvPmEnableGating", false);
+}
+
+int
+nvkm_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device *device,
+		enum nvkm_subdev_type type, int inst, struct nvkm_therm **ptherm)
+{
+	struct nvkm_therm *therm;
+
+	if (!(therm = *ptherm = kzalloc(sizeof(*therm), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_therm_ctor(therm, device, type, inst, func);
+	return 0;
+}