[deliverable/linux.git] / drivers / gpu / drm / nouveau / core / subdev / therm / temp.c

/*
 * 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/object.h>
#include <core/device.h>

#include <subdev/bios.h>

static void
nouveau_therm_temp_set_defaults(struct nouveau_therm *therm)
{
	struct nouveau_therm_priv *priv = (void *)therm;

	priv->bios_sensor.slope_mult = 1;
	priv->bios_sensor.slope_div = 1;
	priv->bios_sensor.offset_num = 0;
	priv->bios_sensor.offset_den = 1;
	priv->bios_sensor.offset_constant = 0;

	priv->bios_sensor.thrs_fan_boost.temp = 90;
	priv->bios_sensor.thrs_fan_boost.hysteresis = 3;

	priv->bios_sensor.thrs_down_clock.temp = 95;
	priv->bios_sensor.thrs_down_clock.hysteresis = 3;

	priv->bios_sensor.thrs_critical.temp = 105;
	priv->bios_sensor.thrs_critical.hysteresis = 5;

	priv->bios_sensor.thrs_shutdown.temp = 135;
	priv->bios_sensor.thrs_shutdown.hysteresis = 5; /*not that it matters */
}


static void
nouveau_therm_temp_safety_checks(struct nouveau_therm *therm)
{
	struct nouveau_therm_priv *priv = (void *)therm;

	if (!priv->bios_sensor.slope_div)
		priv->bios_sensor.slope_div = 1;
	if (!priv->bios_sensor.offset_den)
		priv->bios_sensor.offset_den = 1;
}

/* must be called with alarm_program_lock taken ! */
void nouveau_therm_sensor_set_threshold_state(struct nouveau_therm *therm,
					     enum nouveau_therm_thrs thrs,
					     enum nouveau_therm_thrs_state st)
{
	struct nouveau_therm_priv *priv = (void *)therm;
	priv->sensor.alarm_state[thrs] = st;
}

/* must be called with alarm_program_lock taken ! */
enum nouveau_therm_thrs_state
nouveau_therm_sensor_get_threshold_state(struct nouveau_therm *therm,
					 enum nouveau_therm_thrs thrs)
{
	struct nouveau_therm_priv *priv = (void *)therm;
	return priv->sensor.alarm_state[thrs];
}

void nouveau_therm_sensor_event(struct nouveau_therm *therm,
			        enum nouveau_therm_thrs thrs,
			        enum nouveau_therm_thrs_direction dir)
{
	struct nouveau_therm_priv *priv = (void *)therm;
	bool active;
	const char *thresolds[] = {
		"fanboost", "downclock", "critical", "shutdown"
	};
	uint8_t temperature = therm->temp_get(therm);

	if (thrs < 0 || thrs > 3)
		return;

	if (dir == NOUVEAU_THERM_THRS_FALLING)
		nv_info(therm, "temperature (%u C) went bellow the '%s' threshold\n",
			temperature, thresolds[thrs]);
	else
		nv_info(therm, "temperature (%u C) hit the '%s' threshold\n",
			temperature, thresolds[thrs]);

	active = (dir == NOUVEAU_THERM_THRS_RISING);
	switch (thrs) {
	case NOUVEAU_THERM_THRS_FANBOOST:
		nouveau_therm_fan_set(therm, true, 100);
		nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_AUTO);
		break;
	case NOUVEAU_THERM_THRS_DOWNCLOCK:
		if (priv->emergency.downclock)
			priv->emergency.downclock(therm, active);
		break;
	case NOUVEAU_THERM_THRS_CRITICAL:
		if (priv->emergency.pause)
			priv->emergency.pause(therm, active);
		break;
	case NOUVEAU_THERM_THRS_SHUTDOWN:
		orderly_poweroff(true);
		break;
	case NOUVEAU_THERM_THRS_NR:
		break;
	}

}

/* must be called with alarm_program_lock taken ! */
static void
nouveau_therm_threshold_hyst_polling(struct nouveau_therm *therm,
				   const struct nvbios_therm_threshold *thrs,
				   enum nouveau_therm_thrs thrs_name)
{
	enum nouveau_therm_thrs_direction direction;
	enum nouveau_therm_thrs_state prev_state, new_state;
	int temp = therm->temp_get(therm);

	prev_state = nouveau_therm_sensor_get_threshold_state(therm, thrs_name);

	if (temp >= thrs->temp && prev_state == NOUVEAU_THERM_THRS_LOWER) {
		direction = NOUVEAU_THERM_THRS_RISING;
		new_state = NOUVEAU_THERM_THRS_HIGHER;
	} else if (temp <= thrs->temp - thrs->hysteresis &&
			prev_state == NOUVEAU_THERM_THRS_HIGHER) {
		direction = NOUVEAU_THERM_THRS_FALLING;
		new_state = NOUVEAU_THERM_THRS_LOWER;
	} else
		return; /* nothing to do */

	nouveau_therm_sensor_set_threshold_state(therm, thrs_name, new_state);
	nouveau_therm_sensor_event(therm, thrs_name, direction);
}

static void
alarm_timer_callback(struct nouveau_alarm *alarm)
{
	struct nouveau_therm_priv *priv =
	container_of(alarm, struct nouveau_therm_priv, sensor.therm_poll_alarm);
	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
	struct nouveau_timer *ptimer = nouveau_timer(priv);
	struct nouveau_therm *therm = &priv->base;
	unsigned long flags;

	spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags);

	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_fan_boost,
					     NOUVEAU_THERM_THRS_FANBOOST);

	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_down_clock,
					     NOUVEAU_THERM_THRS_DOWNCLOCK);

	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_critical,
					     NOUVEAU_THERM_THRS_CRITICAL);

	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_shutdown,
					     NOUVEAU_THERM_THRS_SHUTDOWN);

	/* schedule the next poll in one second */
	if (list_empty(&alarm->head))
		ptimer->alarm(ptimer, 1000 * 1000 * 1000, alarm);

	spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags);
}

void
nouveau_therm_program_alarms_polling(struct nouveau_therm *therm)
{
	struct nouveau_therm_priv *priv = (void *)therm;
	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;

	nv_info(therm,
		"programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n",
		sensor->thrs_fan_boost.temp, sensor->thrs_fan_boost.hysteresis,
		sensor->thrs_down_clock.temp,
		sensor->thrs_down_clock.hysteresis,
		sensor->thrs_critical.temp, sensor->thrs_critical.hysteresis,
		sensor->thrs_shutdown.temp, sensor->thrs_shutdown.hysteresis);

	alarm_timer_callback(&priv->sensor.therm_poll_alarm);
}

int
nouveau_therm_sensor_ctor(struct nouveau_therm *therm)
{
	struct nouveau_therm_priv *priv = (void *)therm;
	struct nouveau_bios *bios = nouveau_bios(therm);

	nouveau_alarm_init(&priv->sensor.therm_poll_alarm, alarm_timer_callback);

	nouveau_therm_temp_set_defaults(therm);
	if (nvbios_therm_sensor_parse(bios, NVBIOS_THERM_DOMAIN_CORE,
				      &priv->bios_sensor))
		nv_error(therm, "nvbios_therm_sensor_parse failed\n");
	nouveau_therm_temp_safety_checks(therm);

	return 0;
}
Commit	Line	Data
aa1b9b48 MP	1	/*
	2	* Copyright 2012 The Nouveau community
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Martin Peres
	23	*/
	24
	25	#include "priv.h"
	26
	27	#include <core/object.h>
	28	#include <core/device.h>
	29
	30	#include <subdev/bios.h>
	31
	32	static void
	33	nouveau_therm_temp_set_defaults(struct nouveau_therm *therm)
	34	{
	35	struct nouveau_therm_priv priv = (void )therm;
	36
	37	priv->bios_sensor.slope_mult = 1;
	38	priv->bios_sensor.slope_div = 1;
	39	priv->bios_sensor.offset_num = 0;
	40	priv->bios_sensor.offset_den = 1;
	41	priv->bios_sensor.offset_constant = 0;
	42
	43	priv->bios_sensor.thrs_fan_boost.temp = 90;
	44	priv->bios_sensor.thrs_fan_boost.hysteresis = 3;
	45
	46	priv->bios_sensor.thrs_down_clock.temp = 95;
	47	priv->bios_sensor.thrs_down_clock.hysteresis = 3;
	48
	49	priv->bios_sensor.thrs_critical.temp = 105;
	50	priv->bios_sensor.thrs_critical.hysteresis = 5;
	51
	52	priv->bios_sensor.thrs_shutdown.temp = 135;
	53	priv->bios_sensor.thrs_shutdown.hysteresis = 5; /not that it matters /
	54	}
	55
	56
	57	static void
	58	nouveau_therm_temp_safety_checks(struct nouveau_therm *therm)
	59	{
	60	struct nouveau_therm_priv priv = (void )therm;
	61
	62	if (!priv->bios_sensor.slope_div)
	63	priv->bios_sensor.slope_div = 1;
	64	if (!priv->bios_sensor.offset_den)
65	priv->bios_sensor.offset_den = 1;
66	}
67
0083b91d MP	68	/* must be called with alarm_program_lock taken ! */
	69	void nouveau_therm_sensor_set_threshold_state(struct nouveau_therm *therm,
	70	enum nouveau_therm_thrs thrs,
	71	enum nouveau_therm_thrs_state st)
	72	{
	73	struct nouveau_therm_priv priv = (void )therm;
	74	priv->sensor.alarm_state[thrs] = st;
	75	}
	76
	77	/* must be called with alarm_program_lock taken ! */
	78	enum nouveau_therm_thrs_state
	79	nouveau_therm_sensor_get_threshold_state(struct nouveau_therm *therm,
	80	enum nouveau_therm_thrs thrs)
	81	{
	82	struct nouveau_therm_priv priv = (void )therm;
	83	return priv->sensor.alarm_state[thrs];
	84	}
	85
	86	void nouveau_therm_sensor_event(struct nouveau_therm *therm,
	87	enum nouveau_therm_thrs thrs,
	88	enum nouveau_therm_thrs_direction dir)
	89	{
	90	struct nouveau_therm_priv priv = (void )therm;
	91	bool active;
	92	const char *thresolds[] = {
	93	"fanboost", "downclock", "critical", "shutdown"
	94	};
	95	uint8_t temperature = therm->temp_get(therm);
	96
	97	if (thrs < 0 \|\| thrs > 3)
	98	return;
	99
	100	if (dir == NOUVEAU_THERM_THRS_FALLING)
	101	nv_info(therm, "temperature (%u C) went bellow the '%s' threshold\n",
	102	temperature, thresolds[thrs]);
	103	else
	104	nv_info(therm, "temperature (%u C) hit the '%s' threshold\n",
	105	temperature, thresolds[thrs]);
	106
	107	active = (dir == NOUVEAU_THERM_THRS_RISING);
	108	switch (thrs) {
	109	case NOUVEAU_THERM_THRS_FANBOOST:
	110	nouveau_therm_fan_set(therm, true, 100);
1a22274b	111	nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_AUTO);
0083b91d MP	112	break;
	113	case NOUVEAU_THERM_THRS_DOWNCLOCK:
	114	if (priv->emergency.downclock)
	115	priv->emergency.downclock(therm, active);
	116	break;
	117	case NOUVEAU_THERM_THRS_CRITICAL:
	118	if (priv->emergency.pause)
	119	priv->emergency.pause(therm, active);
	120	break;
	121	case NOUVEAU_THERM_THRS_SHUTDOWN:
	122	orderly_poweroff(true);
	123	break;
	124	case NOUVEAU_THERM_THRS_NR:
	125	break;
	126	}
	127
	128	}
	129
	130	/* must be called with alarm_program_lock taken ! */
	131	static void
	132	nouveau_therm_threshold_hyst_polling(struct nouveau_therm *therm,
	133	const struct nvbios_therm_threshold *thrs,
	134	enum nouveau_therm_thrs thrs_name)
	135	{
	136	enum nouveau_therm_thrs_direction direction;
	137	enum nouveau_therm_thrs_state prev_state, new_state;
	138	int temp = therm->temp_get(therm);
	139
	140	prev_state = nouveau_therm_sensor_get_threshold_state(therm, thrs_name);
	141
	142	if (temp >= thrs->temp && prev_state == NOUVEAU_THERM_THRS_LOWER) {
	143	direction = NOUVEAU_THERM_THRS_RISING;
	144	new_state = NOUVEAU_THERM_THRS_HIGHER;
	145	} else if (temp <= thrs->temp - thrs->hysteresis &&
	146	prev_state == NOUVEAU_THERM_THRS_HIGHER) {
	147	direction = NOUVEAU_THERM_THRS_FALLING;
	148	new_state = NOUVEAU_THERM_THRS_LOWER;
	149	} else
	150	return; /* nothing to do */
	151
	152	nouveau_therm_sensor_set_threshold_state(therm, thrs_name, new_state);
	153	nouveau_therm_sensor_event(therm, thrs_name, direction);
	154	}
	155
	156	static void
	157	alarm_timer_callback(struct nouveau_alarm *alarm)
	158	{
	159	struct nouveau_therm_priv *priv =
	160	container_of(alarm, struct nouveau_therm_priv, sensor.therm_poll_alarm);
	161	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
	162	struct nouveau_timer *ptimer = nouveau_timer(priv);
	163	struct nouveau_therm *therm = &priv->base;
	164	unsigned long flags;
	165
	166	spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags);
	167
	168	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_fan_boost,
	169	NOUVEAU_THERM_THRS_FANBOOST);
	170
	171	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_down_clock,
	172	NOUVEAU_THERM_THRS_DOWNCLOCK);
	173
	174	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_critical,
	175	NOUVEAU_THERM_THRS_CRITICAL);
176
177	nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_shutdown,
178	NOUVEAU_THERM_THRS_SHUTDOWN);
179
180	/* schedule the next poll in one second */
181	if (list_empty(&alarm->head))
182	ptimer->alarm(ptimer, 1000 * 1000 * 1000, alarm);
183
184	spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags);
185	}
186
187	void
188	nouveau_therm_program_alarms_polling(struct nouveau_therm *therm)
189	{
190	struct nouveau_therm_priv priv = (void )therm;
191	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
192
193	nv_info(therm,
194	"programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n",
195	sensor->thrs_fan_boost.temp, sensor->thrs_fan_boost.hysteresis,
196	sensor->thrs_down_clock.temp,
197	sensor->thrs_down_clock.hysteresis,
198	sensor->thrs_critical.temp, sensor->thrs_critical.hysteresis,
199	sensor->thrs_shutdown.temp, sensor->thrs_shutdown.hysteresis);
200
201	alarm_timer_callback(&priv->sensor.therm_poll_alarm);
202	}
203
aa1b9b48 MP	204	int
	205	nouveau_therm_sensor_ctor(struct nouveau_therm *therm)
	206	{
	207	struct nouveau_therm_priv priv = (void )therm;
	208	struct nouveau_bios *bios = nouveau_bios(therm);
	209
0083b91d MP	210	nouveau_alarm_init(&priv->sensor.therm_poll_alarm, alarm_timer_callback);
0083b91d MP	211
aa1b9b48 MP	212	nouveau_therm_temp_set_defaults(therm);
	213	if (nvbios_therm_sensor_parse(bios, NVBIOS_THERM_DOMAIN_CORE,
	214	&priv->bios_sensor))
	215	nv_error(therm, "nvbios_therm_sensor_parse failed\n");
	216	nouveau_therm_temp_safety_checks(therm);
	217
	218	return 0;
	219	}