456 lines
12 KiB
C
456 lines
12 KiB
C
/*
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* Copyright 2012 The Nouveau community
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Martin Peres
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*/
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#include "priv.h"
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#include <core/option.h>
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#include <subdev/pmu.h>
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int
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nvkm_therm_temp_get(struct nvkm_therm *therm)
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{
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if (therm->func->temp_get)
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return therm->func->temp_get(therm);
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return -ENODEV;
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}
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static int
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nvkm_therm_update_trip(struct nvkm_therm *therm)
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{
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struct nvbios_therm_trip_point *trip = therm->fan->bios.trip,
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*cur_trip = NULL,
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*last_trip = therm->last_trip;
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u8 temp = therm->func->temp_get(therm);
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u16 duty, i;
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/* look for the trip point corresponding to the current temperature */
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cur_trip = NULL;
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for (i = 0; i < therm->fan->bios.nr_fan_trip; i++) {
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if (temp >= trip[i].temp)
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cur_trip = &trip[i];
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}
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/* account for the hysteresis cycle */
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if (last_trip && temp <= (last_trip->temp) &&
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temp > (last_trip->temp - last_trip->hysteresis))
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cur_trip = last_trip;
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if (cur_trip) {
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duty = cur_trip->fan_duty;
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therm->last_trip = cur_trip;
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} else {
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duty = 0;
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therm->last_trip = NULL;
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}
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return duty;
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}
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static int
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nvkm_therm_compute_linear_duty(struct nvkm_therm *therm, u8 linear_min_temp,
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u8 linear_max_temp)
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{
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u8 temp = therm->func->temp_get(therm);
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u16 duty;
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/* handle the non-linear part first */
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if (temp < linear_min_temp)
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return therm->fan->bios.min_duty;
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else if (temp > linear_max_temp)
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return therm->fan->bios.max_duty;
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/* we are in the linear zone */
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duty = (temp - linear_min_temp);
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duty *= (therm->fan->bios.max_duty - therm->fan->bios.min_duty);
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duty /= (linear_max_temp - linear_min_temp);
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duty += therm->fan->bios.min_duty;
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return duty;
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}
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static int
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nvkm_therm_update_linear(struct nvkm_therm *therm)
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{
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u8 min = therm->fan->bios.linear_min_temp;
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u8 max = therm->fan->bios.linear_max_temp;
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return nvkm_therm_compute_linear_duty(therm, min, max);
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}
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static int
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nvkm_therm_update_linear_fallback(struct nvkm_therm *therm)
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{
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u8 max = therm->bios_sensor.thrs_fan_boost.temp;
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return nvkm_therm_compute_linear_duty(therm, 30, max);
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}
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static void
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nvkm_therm_update(struct nvkm_therm *therm, int mode)
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{
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struct nvkm_subdev *subdev = &therm->subdev;
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struct nvkm_timer *tmr = subdev->device->timer;
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unsigned long flags;
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bool immd = true;
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bool poll = true;
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int duty = -1;
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spin_lock_irqsave(&therm->lock, flags);
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if (mode < 0)
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mode = therm->mode;
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therm->mode = mode;
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switch (mode) {
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case NVKM_THERM_CTRL_MANUAL:
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nvkm_timer_alarm(tmr, 0, &therm->alarm);
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duty = nvkm_therm_fan_get(therm);
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if (duty < 0)
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duty = 100;
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poll = false;
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break;
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case NVKM_THERM_CTRL_AUTO:
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switch(therm->fan->bios.fan_mode) {
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case NVBIOS_THERM_FAN_TRIP:
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duty = nvkm_therm_update_trip(therm);
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break;
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case NVBIOS_THERM_FAN_LINEAR:
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duty = nvkm_therm_update_linear(therm);
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break;
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case NVBIOS_THERM_FAN_OTHER:
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if (therm->cstate) {
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duty = therm->cstate;
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poll = false;
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} else {
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duty = nvkm_therm_update_linear_fallback(therm);
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}
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break;
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}
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immd = false;
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break;
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case NVKM_THERM_CTRL_NONE:
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default:
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nvkm_timer_alarm(tmr, 0, &therm->alarm);
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poll = false;
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}
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if (poll)
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nvkm_timer_alarm(tmr, 1000000000ULL, &therm->alarm);
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spin_unlock_irqrestore(&therm->lock, flags);
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if (duty >= 0) {
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nvkm_debug(subdev, "FAN target request: %d%%\n", duty);
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nvkm_therm_fan_set(therm, immd, duty);
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}
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}
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int
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nvkm_therm_cstate(struct nvkm_therm *therm, int fan, int dir)
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{
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struct nvkm_subdev *subdev = &therm->subdev;
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if (!dir || (dir < 0 && fan < therm->cstate) ||
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(dir > 0 && fan > therm->cstate)) {
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nvkm_debug(subdev, "default fan speed -> %d%%\n", fan);
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therm->cstate = fan;
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nvkm_therm_update(therm, -1);
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}
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return 0;
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}
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static void
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nvkm_therm_alarm(struct nvkm_alarm *alarm)
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{
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struct nvkm_therm *therm =
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container_of(alarm, struct nvkm_therm, alarm);
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nvkm_therm_update(therm, -1);
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}
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int
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nvkm_therm_fan_mode(struct nvkm_therm *therm, int mode)
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{
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struct nvkm_subdev *subdev = &therm->subdev;
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struct nvkm_device *device = subdev->device;
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static const char *name[] = {
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"disabled",
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"manual",
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"automatic"
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};
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/* The default PPWR ucode on fermi interferes with fan management */
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if ((mode >= ARRAY_SIZE(name)) ||
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(mode != NVKM_THERM_CTRL_NONE && nvkm_pmu_fan_controlled(device)))
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return -EINVAL;
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/* do not allow automatic fan management if the thermal sensor is
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* not available */
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if (mode == NVKM_THERM_CTRL_AUTO &&
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therm->func->temp_get(therm) < 0)
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return -EINVAL;
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if (therm->mode == mode)
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return 0;
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nvkm_debug(subdev, "fan management: %s\n", name[mode]);
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nvkm_therm_update(therm, mode);
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return 0;
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}
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int
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nvkm_therm_attr_get(struct nvkm_therm *therm, enum nvkm_therm_attr_type type)
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{
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switch (type) {
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case NVKM_THERM_ATTR_FAN_MIN_DUTY:
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return therm->fan->bios.min_duty;
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case NVKM_THERM_ATTR_FAN_MAX_DUTY:
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return therm->fan->bios.max_duty;
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case NVKM_THERM_ATTR_FAN_MODE:
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return therm->mode;
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case NVKM_THERM_ATTR_THRS_FAN_BOOST:
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return therm->bios_sensor.thrs_fan_boost.temp;
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case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST:
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return therm->bios_sensor.thrs_fan_boost.hysteresis;
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case NVKM_THERM_ATTR_THRS_DOWN_CLK:
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return therm->bios_sensor.thrs_down_clock.temp;
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case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST:
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return therm->bios_sensor.thrs_down_clock.hysteresis;
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case NVKM_THERM_ATTR_THRS_CRITICAL:
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return therm->bios_sensor.thrs_critical.temp;
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case NVKM_THERM_ATTR_THRS_CRITICAL_HYST:
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return therm->bios_sensor.thrs_critical.hysteresis;
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case NVKM_THERM_ATTR_THRS_SHUTDOWN:
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return therm->bios_sensor.thrs_shutdown.temp;
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case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST:
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return therm->bios_sensor.thrs_shutdown.hysteresis;
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}
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return -EINVAL;
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}
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int
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nvkm_therm_attr_set(struct nvkm_therm *therm,
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enum nvkm_therm_attr_type type, int value)
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{
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switch (type) {
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case NVKM_THERM_ATTR_FAN_MIN_DUTY:
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if (value < 0)
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value = 0;
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if (value > therm->fan->bios.max_duty)
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value = therm->fan->bios.max_duty;
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therm->fan->bios.min_duty = value;
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return 0;
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case NVKM_THERM_ATTR_FAN_MAX_DUTY:
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if (value < 0)
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value = 0;
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if (value < therm->fan->bios.min_duty)
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value = therm->fan->bios.min_duty;
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therm->fan->bios.max_duty = value;
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return 0;
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case NVKM_THERM_ATTR_FAN_MODE:
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return nvkm_therm_fan_mode(therm, value);
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case NVKM_THERM_ATTR_THRS_FAN_BOOST:
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therm->bios_sensor.thrs_fan_boost.temp = value;
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therm->func->program_alarms(therm);
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return 0;
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case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST:
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therm->bios_sensor.thrs_fan_boost.hysteresis = value;
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therm->func->program_alarms(therm);
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return 0;
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case NVKM_THERM_ATTR_THRS_DOWN_CLK:
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therm->bios_sensor.thrs_down_clock.temp = value;
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therm->func->program_alarms(therm);
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return 0;
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case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST:
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therm->bios_sensor.thrs_down_clock.hysteresis = value;
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therm->func->program_alarms(therm);
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return 0;
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case NVKM_THERM_ATTR_THRS_CRITICAL:
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therm->bios_sensor.thrs_critical.temp = value;
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therm->func->program_alarms(therm);
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return 0;
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case NVKM_THERM_ATTR_THRS_CRITICAL_HYST:
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therm->bios_sensor.thrs_critical.hysteresis = value;
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therm->func->program_alarms(therm);
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return 0;
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case NVKM_THERM_ATTR_THRS_SHUTDOWN:
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therm->bios_sensor.thrs_shutdown.temp = value;
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therm->func->program_alarms(therm);
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return 0;
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case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST:
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therm->bios_sensor.thrs_shutdown.hysteresis = value;
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therm->func->program_alarms(therm);
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return 0;
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}
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return -EINVAL;
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}
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void
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nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
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{
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if (!therm || !therm->func->clkgate_enable || !therm->clkgating_enabled)
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return;
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nvkm_debug(&therm->subdev,
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"Enabling clockgating\n");
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therm->func->clkgate_enable(therm);
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}
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void
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nvkm_therm_clkgate_fini(struct nvkm_therm *therm, bool suspend)
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{
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if (!therm || !therm->func->clkgate_fini || !therm->clkgating_enabled)
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return;
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nvkm_debug(&therm->subdev,
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"Preparing clockgating for %s\n",
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suspend ? "suspend" : "fini");
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therm->func->clkgate_fini(therm, suspend);
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}
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static void
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nvkm_therm_clkgate_oneinit(struct nvkm_therm *therm)
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{
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if (!therm->func->clkgate_enable || !therm->clkgating_enabled)
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return;
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nvkm_info(&therm->subdev, "Clockgating enabled\n");
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}
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static void
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nvkm_therm_intr(struct nvkm_subdev *subdev)
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{
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struct nvkm_therm *therm = nvkm_therm(subdev);
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if (therm->func->intr)
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therm->func->intr(therm);
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}
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static int
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nvkm_therm_fini(struct nvkm_subdev *subdev, bool suspend)
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{
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struct nvkm_therm *therm = nvkm_therm(subdev);
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if (therm->func->fini)
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therm->func->fini(therm);
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nvkm_therm_fan_fini(therm, suspend);
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nvkm_therm_sensor_fini(therm, suspend);
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if (suspend) {
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therm->suspend = therm->mode;
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therm->mode = NVKM_THERM_CTRL_NONE;
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}
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return 0;
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}
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static int
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nvkm_therm_oneinit(struct nvkm_subdev *subdev)
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{
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struct nvkm_therm *therm = nvkm_therm(subdev);
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nvkm_therm_sensor_ctor(therm);
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nvkm_therm_ic_ctor(therm);
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nvkm_therm_fan_ctor(therm);
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nvkm_therm_fan_mode(therm, NVKM_THERM_CTRL_AUTO);
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nvkm_therm_sensor_preinit(therm);
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nvkm_therm_clkgate_oneinit(therm);
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return 0;
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}
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static int
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nvkm_therm_init(struct nvkm_subdev *subdev)
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{
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struct nvkm_therm *therm = nvkm_therm(subdev);
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if (therm->func->init)
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therm->func->init(therm);
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if (therm->suspend >= 0) {
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/* restore the pwm value only when on manual or auto mode */
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if (therm->suspend > 0)
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nvkm_therm_fan_set(therm, true, therm->fan->percent);
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nvkm_therm_fan_mode(therm, therm->suspend);
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}
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nvkm_therm_sensor_init(therm);
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nvkm_therm_fan_init(therm);
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return 0;
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}
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void
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nvkm_therm_clkgate_init(struct nvkm_therm *therm,
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const struct nvkm_therm_clkgate_pack *p)
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{
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if (!therm || !therm->func->clkgate_init || !therm->clkgating_enabled)
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return;
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therm->func->clkgate_init(therm, p);
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}
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static void *
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nvkm_therm_dtor(struct nvkm_subdev *subdev)
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{
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struct nvkm_therm *therm = nvkm_therm(subdev);
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kfree(therm->fan);
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return therm;
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}
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static const struct nvkm_subdev_func
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nvkm_therm = {
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.dtor = nvkm_therm_dtor,
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.oneinit = nvkm_therm_oneinit,
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.init = nvkm_therm_init,
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.fini = nvkm_therm_fini,
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.intr = nvkm_therm_intr,
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};
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void
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nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device, enum nvkm_subdev_type type,
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int inst, const struct nvkm_therm_func *func)
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{
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nvkm_subdev_ctor(&nvkm_therm, device, type, inst, &therm->subdev);
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therm->func = func;
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nvkm_alarm_init(&therm->alarm, nvkm_therm_alarm);
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spin_lock_init(&therm->lock);
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spin_lock_init(&therm->sensor.alarm_program_lock);
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therm->fan_get = nvkm_therm_fan_user_get;
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therm->fan_set = nvkm_therm_fan_user_set;
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therm->attr_get = nvkm_therm_attr_get;
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therm->attr_set = nvkm_therm_attr_set;
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therm->mode = therm->suspend = -1; /* undefined */
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therm->clkgating_enabled = nvkm_boolopt(device->cfgopt,
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"NvPmEnableGating", false);
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}
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int
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nvkm_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device *device,
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enum nvkm_subdev_type type, int inst, struct nvkm_therm **ptherm)
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{
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struct nvkm_therm *therm;
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if (!(therm = *ptherm = kzalloc(sizeof(*therm), GFP_KERNEL)))
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return -ENOMEM;
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nvkm_therm_ctor(therm, device, type, inst, func);
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return 0;
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}
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