summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nvkm/subdev/therm/temp.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/therm/temp.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/therm/temp.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/temp.c
new file mode 100644
index 000000000000..6212537b90c5
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/temp.c
@@ -0,0 +1,264 @@
+/*
+ * 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.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;
+ 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 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];
+}
+
+static void
+nv_poweroff_work(struct work_struct *work)
+{
+ orderly_poweroff(true);
+ kfree(work);
+}
+
+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"
+ };
+ int temperature = therm->temp_get(therm);
+
+ if (thrs < 0 || thrs > 3)
+ return;
+
+ if (dir == NOUVEAU_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 == NOUVEAU_THERM_THRS_RISING);
+ switch (thrs) {
+ case NOUVEAU_THERM_THRS_FANBOOST:
+ if (active) {
+ nouveau_therm_fan_set(therm, true, 100);
+ nouveau_therm_fan_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:
+ 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 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);
+
+ 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
+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_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
+nouveau_therm_sensor_init(struct nouveau_therm *therm)
+{
+ struct nouveau_therm_priv *priv = (void *)therm;
+ priv->sensor.program_alarms(therm);
+ return 0;
+}
+
+int
+nouveau_therm_sensor_fini(struct nouveau_therm *therm, bool suspend)
+{
+ struct nouveau_therm_priv *priv = (void *)therm;
+ struct nouveau_timer *ptimer = nouveau_timer(therm);
+
+ if (suspend)
+ ptimer->alarm_cancel(ptimer, &priv->sensor.therm_poll_alarm);
+ return 0;
+}
+
+void
+nouveau_therm_sensor_preinit(struct nouveau_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
+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;
+}