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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c | 455 |
1 files changed, 455 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c new file mode 100644 index 000000000..fc5ee118e --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c @@ -0,0 +1,455 @@ +/* + * 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/option.h> +#include <subdev/pmu.h> + +int +nvkm_therm_temp_get(struct nvkm_therm *therm) +{ + if (therm->func->temp_get) + return therm->func->temp_get(therm); + return -ENODEV; +} + +static int +nvkm_therm_update_trip(struct nvkm_therm *therm) +{ + struct nvbios_therm_trip_point *trip = therm->fan->bios.trip, + *cur_trip = NULL, + *last_trip = therm->last_trip; + u8 temp = therm->func->temp_get(therm); + u16 duty, i; + + /* look for the trip point corresponding to the current temperature */ + cur_trip = NULL; + for (i = 0; i < therm->fan->bios.nr_fan_trip; i++) { + if (temp >= trip[i].temp) + cur_trip = &trip[i]; + } + + /* account for the hysteresis cycle */ + if (last_trip && temp <= (last_trip->temp) && + temp > (last_trip->temp - last_trip->hysteresis)) + cur_trip = last_trip; + + if (cur_trip) { + duty = cur_trip->fan_duty; + therm->last_trip = cur_trip; + } else { + duty = 0; + therm->last_trip = NULL; + } + + return duty; +} + +static int +nvkm_therm_compute_linear_duty(struct nvkm_therm *therm, u8 linear_min_temp, + u8 linear_max_temp) +{ + u8 temp = therm->func->temp_get(therm); + u16 duty; + + /* handle the non-linear part first */ + if (temp < linear_min_temp) + return therm->fan->bios.min_duty; + else if (temp > linear_max_temp) + return therm->fan->bios.max_duty; + + /* we are in the linear zone */ + duty = (temp - linear_min_temp); + duty *= (therm->fan->bios.max_duty - therm->fan->bios.min_duty); + duty /= (linear_max_temp - linear_min_temp); + duty += therm->fan->bios.min_duty; + return duty; +} + +static int +nvkm_therm_update_linear(struct nvkm_therm *therm) +{ + u8 min = therm->fan->bios.linear_min_temp; + u8 max = therm->fan->bios.linear_max_temp; + return nvkm_therm_compute_linear_duty(therm, min, max); +} + +static int +nvkm_therm_update_linear_fallback(struct nvkm_therm *therm) +{ + u8 max = therm->bios_sensor.thrs_fan_boost.temp; + return nvkm_therm_compute_linear_duty(therm, 30, max); +} + +static void +nvkm_therm_update(struct nvkm_therm *therm, int mode) +{ + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_timer *tmr = subdev->device->timer; + unsigned long flags; + bool immd = true; + bool poll = true; + int duty = -1; + + spin_lock_irqsave(&therm->lock, flags); + if (mode < 0) + mode = therm->mode; + therm->mode = mode; + + switch (mode) { + case NVKM_THERM_CTRL_MANUAL: + nvkm_timer_alarm(tmr, 0, &therm->alarm); + duty = nvkm_therm_fan_get(therm); + if (duty < 0) + duty = 100; + poll = false; + break; + case NVKM_THERM_CTRL_AUTO: + switch(therm->fan->bios.fan_mode) { + case NVBIOS_THERM_FAN_TRIP: + duty = nvkm_therm_update_trip(therm); + break; + case NVBIOS_THERM_FAN_LINEAR: + duty = nvkm_therm_update_linear(therm); + break; + case NVBIOS_THERM_FAN_OTHER: + if (therm->cstate) { + duty = therm->cstate; + poll = false; + } else { + duty = nvkm_therm_update_linear_fallback(therm); + } + break; + } + immd = false; + break; + case NVKM_THERM_CTRL_NONE: + default: + nvkm_timer_alarm(tmr, 0, &therm->alarm); + poll = false; + } + + if (poll) + nvkm_timer_alarm(tmr, 1000000000ULL, &therm->alarm); + spin_unlock_irqrestore(&therm->lock, flags); + + if (duty >= 0) { + nvkm_debug(subdev, "FAN target request: %d%%\n", duty); + nvkm_therm_fan_set(therm, immd, duty); + } +} + +int +nvkm_therm_cstate(struct nvkm_therm *therm, int fan, int dir) +{ + struct nvkm_subdev *subdev = &therm->subdev; + if (!dir || (dir < 0 && fan < therm->cstate) || + (dir > 0 && fan > therm->cstate)) { + nvkm_debug(subdev, "default fan speed -> %d%%\n", fan); + therm->cstate = fan; + nvkm_therm_update(therm, -1); + } + return 0; +} + +static void +nvkm_therm_alarm(struct nvkm_alarm *alarm) +{ + struct nvkm_therm *therm = + container_of(alarm, struct nvkm_therm, alarm); + nvkm_therm_update(therm, -1); +} + +int +nvkm_therm_fan_mode(struct nvkm_therm *therm, int mode) +{ + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_device *device = subdev->device; + static const char *name[] = { + "disabled", + "manual", + "automatic" + }; + + /* The default PPWR ucode on fermi interferes with fan management */ + if ((mode >= ARRAY_SIZE(name)) || + (mode != NVKM_THERM_CTRL_NONE && nvkm_pmu_fan_controlled(device))) + return -EINVAL; + + /* do not allow automatic fan management if the thermal sensor is + * not available */ + if (mode == NVKM_THERM_CTRL_AUTO && + therm->func->temp_get(therm) < 0) + return -EINVAL; + + if (therm->mode == mode) + return 0; + + nvkm_debug(subdev, "fan management: %s\n", name[mode]); + nvkm_therm_update(therm, mode); + return 0; +} + +int +nvkm_therm_attr_get(struct nvkm_therm *therm, enum nvkm_therm_attr_type type) +{ + switch (type) { + case NVKM_THERM_ATTR_FAN_MIN_DUTY: + return therm->fan->bios.min_duty; + case NVKM_THERM_ATTR_FAN_MAX_DUTY: + return therm->fan->bios.max_duty; + case NVKM_THERM_ATTR_FAN_MODE: + return therm->mode; + case NVKM_THERM_ATTR_THRS_FAN_BOOST: + return therm->bios_sensor.thrs_fan_boost.temp; + case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST: + return therm->bios_sensor.thrs_fan_boost.hysteresis; + case NVKM_THERM_ATTR_THRS_DOWN_CLK: + return therm->bios_sensor.thrs_down_clock.temp; + case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST: + return therm->bios_sensor.thrs_down_clock.hysteresis; + case NVKM_THERM_ATTR_THRS_CRITICAL: + return therm->bios_sensor.thrs_critical.temp; + case NVKM_THERM_ATTR_THRS_CRITICAL_HYST: + return therm->bios_sensor.thrs_critical.hysteresis; + case NVKM_THERM_ATTR_THRS_SHUTDOWN: + return therm->bios_sensor.thrs_shutdown.temp; + case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST: + return therm->bios_sensor.thrs_shutdown.hysteresis; + } + + return -EINVAL; +} + +int +nvkm_therm_attr_set(struct nvkm_therm *therm, + enum nvkm_therm_attr_type type, int value) +{ + switch (type) { + case NVKM_THERM_ATTR_FAN_MIN_DUTY: + if (value < 0) + value = 0; + if (value > therm->fan->bios.max_duty) + value = therm->fan->bios.max_duty; + therm->fan->bios.min_duty = value; + return 0; + case NVKM_THERM_ATTR_FAN_MAX_DUTY: + if (value < 0) + value = 0; + if (value < therm->fan->bios.min_duty) + value = therm->fan->bios.min_duty; + therm->fan->bios.max_duty = value; + return 0; + case NVKM_THERM_ATTR_FAN_MODE: + return nvkm_therm_fan_mode(therm, value); + case NVKM_THERM_ATTR_THRS_FAN_BOOST: + therm->bios_sensor.thrs_fan_boost.temp = value; + therm->func->program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST: + therm->bios_sensor.thrs_fan_boost.hysteresis = value; + therm->func->program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_DOWN_CLK: + therm->bios_sensor.thrs_down_clock.temp = value; + therm->func->program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST: + therm->bios_sensor.thrs_down_clock.hysteresis = value; + therm->func->program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_CRITICAL: + therm->bios_sensor.thrs_critical.temp = value; + therm->func->program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_CRITICAL_HYST: + therm->bios_sensor.thrs_critical.hysteresis = value; + therm->func->program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_SHUTDOWN: + therm->bios_sensor.thrs_shutdown.temp = value; + therm->func->program_alarms(therm); + return 0; + case NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST: + therm->bios_sensor.thrs_shutdown.hysteresis = value; + therm->func->program_alarms(therm); + return 0; + } + + return -EINVAL; +} + +void +nvkm_therm_clkgate_enable(struct nvkm_therm *therm) +{ + if (!therm || !therm->func->clkgate_enable || !therm->clkgating_enabled) + return; + + nvkm_debug(&therm->subdev, + "Enabling clockgating\n"); + therm->func->clkgate_enable(therm); +} + +void +nvkm_therm_clkgate_fini(struct nvkm_therm *therm, bool suspend) +{ + if (!therm || !therm->func->clkgate_fini || !therm->clkgating_enabled) + return; + + nvkm_debug(&therm->subdev, + "Preparing clockgating for %s\n", + suspend ? "suspend" : "fini"); + therm->func->clkgate_fini(therm, suspend); +} + +static void +nvkm_therm_clkgate_oneinit(struct nvkm_therm *therm) +{ + if (!therm->func->clkgate_enable || !therm->clkgating_enabled) + return; + + nvkm_info(&therm->subdev, "Clockgating enabled\n"); +} + +static void +nvkm_therm_intr(struct nvkm_subdev *subdev) +{ + struct nvkm_therm *therm = nvkm_therm(subdev); + if (therm->func->intr) + therm->func->intr(therm); +} + +static int +nvkm_therm_fini(struct nvkm_subdev *subdev, bool suspend) +{ + struct nvkm_therm *therm = nvkm_therm(subdev); + + if (therm->func->fini) + therm->func->fini(therm); + + nvkm_therm_fan_fini(therm, suspend); + nvkm_therm_sensor_fini(therm, suspend); + + if (suspend) { + therm->suspend = therm->mode; + therm->mode = NVKM_THERM_CTRL_NONE; + } + + return 0; +} + +static int +nvkm_therm_oneinit(struct nvkm_subdev *subdev) +{ + struct nvkm_therm *therm = nvkm_therm(subdev); + nvkm_therm_sensor_ctor(therm); + nvkm_therm_ic_ctor(therm); + nvkm_therm_fan_ctor(therm); + nvkm_therm_fan_mode(therm, NVKM_THERM_CTRL_AUTO); + nvkm_therm_sensor_preinit(therm); + nvkm_therm_clkgate_oneinit(therm); + return 0; +} + +static int +nvkm_therm_init(struct nvkm_subdev *subdev) +{ + struct nvkm_therm *therm = nvkm_therm(subdev); + + if (therm->func->init) + therm->func->init(therm); + + if (therm->suspend >= 0) { + /* restore the pwm value only when on manual or auto mode */ + if (therm->suspend > 0) + nvkm_therm_fan_set(therm, true, therm->fan->percent); + + nvkm_therm_fan_mode(therm, therm->suspend); + } + + nvkm_therm_sensor_init(therm); + nvkm_therm_fan_init(therm); + return 0; +} + +void +nvkm_therm_clkgate_init(struct nvkm_therm *therm, + const struct nvkm_therm_clkgate_pack *p) +{ + if (!therm || !therm->func->clkgate_init || !therm->clkgating_enabled) + return; + + therm->func->clkgate_init(therm, p); +} + +static void * +nvkm_therm_dtor(struct nvkm_subdev *subdev) +{ + struct nvkm_therm *therm = nvkm_therm(subdev); + kfree(therm->fan); + return therm; +} + +static const struct nvkm_subdev_func +nvkm_therm = { + .dtor = nvkm_therm_dtor, + .oneinit = nvkm_therm_oneinit, + .init = nvkm_therm_init, + .fini = nvkm_therm_fini, + .intr = nvkm_therm_intr, +}; + +void +nvkm_therm_ctor(struct nvkm_therm *therm, struct nvkm_device *device, enum nvkm_subdev_type type, + int inst, const struct nvkm_therm_func *func) +{ + nvkm_subdev_ctor(&nvkm_therm, device, type, inst, &therm->subdev); + therm->func = func; + + nvkm_alarm_init(&therm->alarm, nvkm_therm_alarm); + spin_lock_init(&therm->lock); + spin_lock_init(&therm->sensor.alarm_program_lock); + + therm->fan_get = nvkm_therm_fan_user_get; + therm->fan_set = nvkm_therm_fan_user_set; + therm->attr_get = nvkm_therm_attr_get; + therm->attr_set = nvkm_therm_attr_set; + therm->mode = therm->suspend = -1; /* undefined */ + + therm->clkgating_enabled = nvkm_boolopt(device->cfgopt, + "NvPmEnableGating", false); +} + +int +nvkm_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device *device, + enum nvkm_subdev_type type, int inst, struct nvkm_therm **ptherm) +{ + struct nvkm_therm *therm; + + if (!(therm = *ptherm = kzalloc(sizeof(*therm), GFP_KERNEL))) + return -ENOMEM; + + nvkm_therm_ctor(therm, device, type, inst, func); + return 0; +} |