[deliverable/linux.git] / drivers / gpu / drm / nouveau / nvkm / 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"

static void
nvkm_therm_temp_set_defaults(struct nvkm_therm *therm)
{
	struct nvkm_therm_priv *priv = (void *)therm;

	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
nvkm_therm_temp_safety_checks(struct nvkm_therm *therm)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	struct nvbios_therm_sensor *s = &priv->bios_sensor;

	/* enforce a minimum hysteresis on thresholds */
	s->thrs_fan_boost.hysteresis = max_t(u8, s->thrs_fan_boost.hysteresis, 2);
	s->thrs_down_clock.hysteresis = max_t(u8, s->thrs_down_clock.hysteresis, 2);
	s->thrs_critical.hysteresis = max_t(u8, s->thrs_critical.hysteresis, 2);
	s->thrs_shutdown.hysteresis = max_t(u8, s->thrs_shutdown.hysteresis, 2);
}

/* must be called with alarm_program_lock taken ! */
void
nvkm_therm_sensor_set_threshold_state(struct nvkm_therm *therm,
				      enum nvkm_therm_thrs thrs,
				      enum nvkm_therm_thrs_state st)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	priv->sensor.alarm_state[thrs] = st;
}

/* must be called with alarm_program_lock taken ! */
enum nvkm_therm_thrs_state
nvkm_therm_sensor_get_threshold_state(struct nvkm_therm *therm,
				      enum nvkm_therm_thrs thrs)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	return priv->sensor.alarm_state[thrs];
}

static void
nv_poweroff_work(struct work_struct *work)
{
	orderly_poweroff(true);
	kfree(work);
}

void
nvkm_therm_sensor_event(struct nvkm_therm *therm, enum nvkm_therm_thrs thrs,
			enum nvkm_therm_thrs_direction dir)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	bool active;
	const char *thresolds[] = {
		"fanboost", "downclock", "critical", "shutdown"
	};
	int temperature = therm->temp_get(therm);

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

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

	active = (dir == NVKM_THERM_THRS_RISING);
	switch (thrs) {
	case NVKM_THERM_THRS_FANBOOST:
		if (active) {
			nvkm_therm_fan_set(therm, true, 100);
			nvkm_therm_fan_mode(therm, NVKM_THERM_CTRL_AUTO);
		}
		break;
	case NVKM_THERM_THRS_DOWNCLOCK:
		if (priv->emergency.downclock)
			priv->emergency.downclock(therm, active);
		break;
	case NVKM_THERM_THRS_CRITICAL:
		if (priv->emergency.pause)
			priv->emergency.pause(therm, active);
		break;
	case NVKM_THERM_THRS_SHUTDOWN:
		if (active) {
			struct work_struct *work;

			work = kmalloc(sizeof(*work), GFP_ATOMIC);
			if (work) {
				INIT_WORK(work, nv_poweroff_work);
				schedule_work(work);
			}
		}
		break;
	case NVKM_THERM_THRS_NR:
		break;
	}

}

/* must be called with alarm_program_lock taken ! */
static void
nvkm_therm_threshold_hyst_polling(struct nvkm_therm *therm,
				  const struct nvbios_therm_threshold *thrs,
				  enum nvkm_therm_thrs thrs_name)
{
	enum nvkm_therm_thrs_direction direction;
	enum nvkm_therm_thrs_state prev_state, new_state;
	int temp = therm->temp_get(therm);

	prev_state = nvkm_therm_sensor_get_threshold_state(therm, thrs_name);

	if (temp >= thrs->temp && prev_state == NVKM_THERM_THRS_LOWER) {
		direction = NVKM_THERM_THRS_RISING;
		new_state = NVKM_THERM_THRS_HIGHER;
	} else if (temp <= thrs->temp - thrs->hysteresis &&
			prev_state == NVKM_THERM_THRS_HIGHER) {
		direction = NVKM_THERM_THRS_FALLING;
		new_state = NVKM_THERM_THRS_LOWER;
	} else
		return; /* nothing to do */

	nvkm_therm_sensor_set_threshold_state(therm, thrs_name, new_state);
	nvkm_therm_sensor_event(therm, thrs_name, direction);
}

static void
alarm_timer_callback(struct nvkm_alarm *alarm)
{
	struct nvkm_therm_priv *priv =
	container_of(alarm, struct nvkm_therm_priv, sensor.therm_poll_alarm);
	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
	struct nvkm_timer *ptimer = nvkm_timer(priv);
	struct nvkm_therm *therm = &priv->base;
	unsigned long flags;

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

	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_fan_boost,
					  NVKM_THERM_THRS_FANBOOST);

	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_down_clock,
					  NVKM_THERM_THRS_DOWNCLOCK);

	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_critical,
					  NVKM_THERM_THRS_CRITICAL);

	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_shutdown,
					  NVKM_THERM_THRS_SHUTDOWN);

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

	/* schedule the next poll in one second */
	if (therm->temp_get(therm) >= 0 && list_empty(&alarm->head))
		ptimer->alarm(ptimer, 1000000000ULL, alarm);
}

void
nvkm_therm_program_alarms_polling(struct nvkm_therm *therm)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;

	nv_debug(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
nvkm_therm_sensor_init(struct nvkm_therm *therm)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	priv->sensor.program_alarms(therm);
	return 0;
}

int
nvkm_therm_sensor_fini(struct nvkm_therm *therm, bool suspend)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	struct nvkm_timer *ptimer = nvkm_timer(therm);

	if (suspend)
		ptimer->alarm_cancel(ptimer, &priv->sensor.therm_poll_alarm);
	return 0;
}

void
nvkm_therm_sensor_preinit(struct nvkm_therm *therm)
{
	const char *sensor_avail = "yes";

	if (therm->temp_get(therm) < 0)
		sensor_avail = "no";

	nv_info(therm, "internal sensor: %s\n", sensor_avail);
}

int
nvkm_therm_sensor_ctor(struct nvkm_therm *therm)
{
	struct nvkm_therm_priv *priv = (void *)therm;
	struct nvkm_bios *bios = nvkm_bios(therm);

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

	nvkm_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");
	nvkm_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	*/
aa1b9b48 MP	24	#include "priv.h"
aa1b9b48 MP	25
aa1b9b48	26	static void
e1404611	27	nvkm_therm_temp_set_defaults(struct nvkm_therm *therm)
aa1b9b48	28	{
e1404611	29	struct nvkm_therm_priv priv = (void )therm;
aa1b9b48	30
aa1b9b48 MP	31	priv->bios_sensor.offset_constant = 0;
	32
	33	priv->bios_sensor.thrs_fan_boost.temp = 90;
	34	priv->bios_sensor.thrs_fan_boost.hysteresis = 3;
	35
	36	priv->bios_sensor.thrs_down_clock.temp = 95;
	37	priv->bios_sensor.thrs_down_clock.hysteresis = 3;
	38
	39	priv->bios_sensor.thrs_critical.temp = 105;
	40	priv->bios_sensor.thrs_critical.hysteresis = 5;
	41
	42	priv->bios_sensor.thrs_shutdown.temp = 135;
	43	priv->bios_sensor.thrs_shutdown.hysteresis = 5; /not that it matters /
	44	}
	45
	46
	47	static void
e1404611	48	nvkm_therm_temp_safety_checks(struct nvkm_therm *therm)
aa1b9b48	49	{
e1404611	50	struct nvkm_therm_priv priv = (void )therm;
3600ad5e	51	struct nvbios_therm_sensor *s = &priv->bios_sensor;
aa1b9b48	52
3600ad5e MP	53	/* enforce a minimum hysteresis on thresholds */
	54	s->thrs_fan_boost.hysteresis = max_t(u8, s->thrs_fan_boost.hysteresis, 2);
	55	s->thrs_down_clock.hysteresis = max_t(u8, s->thrs_down_clock.hysteresis, 2);
	56	s->thrs_critical.hysteresis = max_t(u8, s->thrs_critical.hysteresis, 2);
	57	s->thrs_shutdown.hysteresis = max_t(u8, s->thrs_shutdown.hysteresis, 2);
aa1b9b48 MP	58	}
aa1b9b48 MP	59
0083b91d	60	/* must be called with alarm_program_lock taken ! */
e1404611 BS	61	void
	62	nvkm_therm_sensor_set_threshold_state(struct nvkm_therm *therm,
	63	enum nvkm_therm_thrs thrs,
	64	enum nvkm_therm_thrs_state st)
0083b91d	65	{
e1404611	66	struct nvkm_therm_priv priv = (void )therm;
0083b91d MP	67	priv->sensor.alarm_state[thrs] = st;
	68	}
	69
	70	/* must be called with alarm_program_lock taken ! */
e1404611 BS	71	enum nvkm_therm_thrs_state
	72	nvkm_therm_sensor_get_threshold_state(struct nvkm_therm *therm,
	73	enum nvkm_therm_thrs thrs)
0083b91d	74	{
e1404611	75	struct nvkm_therm_priv priv = (void )therm;
0083b91d MP	76	return priv->sensor.alarm_state[thrs];
	77	}
	78
07df3043 MS	79	static void
	80	nv_poweroff_work(struct work_struct *work)
	81	{
	82	orderly_poweroff(true);
	83	kfree(work);
	84	}
	85
e1404611 BS	86	void
	87	nvkm_therm_sensor_event(struct nvkm_therm *therm, enum nvkm_therm_thrs thrs,
	88	enum nvkm_therm_thrs_direction dir)
0083b91d	89	{
e1404611	90	struct nvkm_therm_priv priv = (void )therm;
0083b91d MP	91	bool active;
	92	const char *thresolds[] = {
	93	"fanboost", "downclock", "critical", "shutdown"
	94	};
7591782b	95	int temperature = therm->temp_get(therm);
0083b91d MP	96
	97	if (thrs < 0 \|\| thrs > 3)
	98	return;
	99
e1404611	100	if (dir == NVKM_THERM_THRS_FALLING)
7591782b	101	nv_info(therm, "temperature (%i C) went below the '%s' threshold\n",
0083b91d MP	102	temperature, thresolds[thrs]);
0083b91d MP	103	else
7591782b	104	nv_info(therm, "temperature (%i C) hit the '%s' threshold\n",
0083b91d MP	105	temperature, thresolds[thrs]);
0083b91d MP	106
e1404611	107	active = (dir == NVKM_THERM_THRS_RISING);
0083b91d	108	switch (thrs) {
e1404611	109	case NVKM_THERM_THRS_FANBOOST:
134fc032	110	if (active) {
e1404611 BS	111	nvkm_therm_fan_set(therm, true, 100);
e1404611 BS	112	nvkm_therm_fan_mode(therm, NVKM_THERM_CTRL_AUTO);
134fc032	113	}
0083b91d	114	break;
e1404611	115	case NVKM_THERM_THRS_DOWNCLOCK:
0083b91d MP	116	if (priv->emergency.downclock)
	117	priv->emergency.downclock(therm, active);
	118	break;
e1404611	119	case NVKM_THERM_THRS_CRITICAL:
0083b91d MP	120	if (priv->emergency.pause)
	121	priv->emergency.pause(therm, active);
	122	break;
e1404611	123	case NVKM_THERM_THRS_SHUTDOWN:
07df3043 MS	124	if (active) {
	125	struct work_struct *work;
	126
	127	work = kmalloc(sizeof(*work), GFP_ATOMIC);
	128	if (work) {
	129	INIT_WORK(work, nv_poweroff_work);
	130	schedule_work(work);
	131	}
	132	}
0083b91d	133	break;
e1404611	134	case NVKM_THERM_THRS_NR:
0083b91d MP	135	break;
	136	}
	137
	138	}
	139
	140	/* must be called with alarm_program_lock taken ! */
	141	static void
e1404611 BS	142	nvkm_therm_threshold_hyst_polling(struct nvkm_therm *therm,
	143	const struct nvbios_therm_threshold *thrs,
	144	enum nvkm_therm_thrs thrs_name)
0083b91d	145	{
e1404611 BS	146	enum nvkm_therm_thrs_direction direction;
e1404611 BS	147	enum nvkm_therm_thrs_state prev_state, new_state;
0083b91d MP	148	int temp = therm->temp_get(therm);
0083b91d MP	149
e1404611	150	prev_state = nvkm_therm_sensor_get_threshold_state(therm, thrs_name);
0083b91d	151
e1404611 BS	152	if (temp >= thrs->temp && prev_state == NVKM_THERM_THRS_LOWER) {
	153	direction = NVKM_THERM_THRS_RISING;
	154	new_state = NVKM_THERM_THRS_HIGHER;
0083b91d	155	} else if (temp <= thrs->temp - thrs->hysteresis &&
e1404611 BS	156	prev_state == NVKM_THERM_THRS_HIGHER) {
	157	direction = NVKM_THERM_THRS_FALLING;
	158	new_state = NVKM_THERM_THRS_LOWER;
0083b91d MP	159	} else
	160	return; /* nothing to do */
	161
e1404611 BS	162	nvkm_therm_sensor_set_threshold_state(therm, thrs_name, new_state);
e1404611 BS	163	nvkm_therm_sensor_event(therm, thrs_name, direction);
0083b91d MP	164	}
	165
	166	static void
e1404611	167	alarm_timer_callback(struct nvkm_alarm *alarm)
0083b91d	168	{
e1404611 BS	169	struct nvkm_therm_priv *priv =
e1404611 BS	170	container_of(alarm, struct nvkm_therm_priv, sensor.therm_poll_alarm);
0083b91d	171	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
e1404611 BS	172	struct nvkm_timer *ptimer = nvkm_timer(priv);
e1404611 BS	173	struct nvkm_therm *therm = &priv->base;
0083b91d MP	174	unsigned long flags;
	175
	176	spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags);
	177
e1404611 BS	178	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_fan_boost,
e1404611 BS	179	NVKM_THERM_THRS_FANBOOST);
0083b91d	180
e1404611 BS	181	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_down_clock,
e1404611 BS	182	NVKM_THERM_THRS_DOWNCLOCK);
0083b91d	183
e1404611 BS	184	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_critical,
e1404611 BS	185	NVKM_THERM_THRS_CRITICAL);
0083b91d	186
e1404611 BS	187	nvkm_therm_threshold_hyst_polling(therm, &sensor->thrs_shutdown,
e1404611 BS	188	NVKM_THERM_THRS_SHUTDOWN);
0083b91d	189
bb78e7a1 MP	190	spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags);
bb78e7a1 MP	191
0083b91d	192	/* schedule the next poll in one second */
bf55eb84	193	if (therm->temp_get(therm) >= 0 && list_empty(&alarm->head))
bb78e7a1	194	ptimer->alarm(ptimer, 1000000000ULL, alarm);
0083b91d MP	195	}
	196
	197	void
e1404611	198	nvkm_therm_program_alarms_polling(struct nvkm_therm *therm)
0083b91d	199	{
e1404611	200	struct nvkm_therm_priv priv = (void )therm;
0083b91d MP	201	struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
0083b91d MP	202
bdd4e843 BS	203	nv_debug(therm,
	204	"programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n",
	205	sensor->thrs_fan_boost.temp, sensor->thrs_fan_boost.hysteresis,
	206	sensor->thrs_down_clock.temp,
	207	sensor->thrs_down_clock.hysteresis,
	208	sensor->thrs_critical.temp, sensor->thrs_critical.hysteresis,
	209	sensor->thrs_shutdown.temp, sensor->thrs_shutdown.hysteresis);
0083b91d MP	210
	211	alarm_timer_callback(&priv->sensor.therm_poll_alarm);
	212	}
	213
c4a62a76	214	int
e1404611	215	nvkm_therm_sensor_init(struct nvkm_therm *therm)
c4a62a76	216	{
e1404611	217	struct nvkm_therm_priv priv = (void )therm;
c4a62a76 MP	218	priv->sensor.program_alarms(therm);
	219	return 0;
	220	}
	221
	222	int
e1404611	223	nvkm_therm_sensor_fini(struct nvkm_therm *therm, bool suspend)
c4a62a76	224	{
e1404611 BS	225	struct nvkm_therm_priv priv = (void )therm;
e1404611 BS	226	struct nvkm_timer *ptimer = nvkm_timer(therm);
c4a62a76 MP	227
	228	if (suspend)
	229	ptimer->alarm_cancel(ptimer, &priv->sensor.therm_poll_alarm);
	230	return 0;
	231	}
	232
0b3ee377	233	void
e1404611	234	nvkm_therm_sensor_preinit(struct nvkm_therm *therm)
0b3ee377 MP	235	{
	236	const char *sensor_avail = "yes";
	237
	238	if (therm->temp_get(therm) < 0)
	239	sensor_avail = "no";
	240
	241	nv_info(therm, "internal sensor: %s\n", sensor_avail);
	242	}
	243
aa1b9b48	244	int
e1404611	245	nvkm_therm_sensor_ctor(struct nvkm_therm *therm)
aa1b9b48	246	{
e1404611 BS	247	struct nvkm_therm_priv priv = (void )therm;
e1404611 BS	248	struct nvkm_bios *bios = nvkm_bios(therm);
aa1b9b48	249
e1404611	250	nvkm_alarm_init(&priv->sensor.therm_poll_alarm, alarm_timer_callback);
0083b91d	251
e1404611	252	nvkm_therm_temp_set_defaults(therm);
aa1b9b48 MP	253	if (nvbios_therm_sensor_parse(bios, NVBIOS_THERM_DOMAIN_CORE,
	254	&priv->bios_sensor))
	255	nv_error(therm, "nvbios_therm_sensor_parse failed\n");
e1404611	256	nvkm_therm_temp_safety_checks(therm);
aa1b9b48 MP	257
	258	return 0;
	259	}