diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/therm/temp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/therm/temp.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c index 204282301fb..b37624af829 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c @@ -58,11 +58,171 @@ 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; if (!priv->bios_sensor.slope_div) priv->bios_sensor.slope_div = 1; if (!priv->bios_sensor.offset_den) priv->bios_sensor.offset_den = 1; + + /* 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" + }; + 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 below 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: + if (active) { + 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: + 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); + + /* 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 @@ -71,6 +231,8 @@ 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)) |