248 lines
7.2 KiB
C
248 lines
7.2 KiB
C
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/*
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* Copyright 2012 Red Hat Inc.
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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: Ben Skeggs
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* Martin Peres
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*/
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#include "priv.h"
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#include <subdev/fuse.h>
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int
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g84_temp_get(struct nvkm_therm *therm)
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{
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struct nvkm_device *device = therm->subdev.device;
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if (nvkm_fuse_read(device->fuse, 0x1a8) == 1)
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return nvkm_rd32(device, 0x20400);
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else
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return -ENODEV;
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}
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void
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g84_sensor_setup(struct nvkm_therm *therm)
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{
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struct nvkm_device *device = therm->subdev.device;
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/* enable temperature reading for cards with insane defaults */
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if (nvkm_fuse_read(device->fuse, 0x1a8) == 1) {
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nvkm_mask(device, 0x20008, 0x80008000, 0x80000000);
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nvkm_mask(device, 0x2000c, 0x80000003, 0x00000000);
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mdelay(20); /* wait for the temperature to stabilize */
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}
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}
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static void
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g84_therm_program_alarms(struct nvkm_therm *therm)
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{
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struct nvbios_therm_sensor *sensor = &therm->bios_sensor;
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struct nvkm_subdev *subdev = &therm->subdev;
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struct nvkm_device *device = subdev->device;
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unsigned long flags;
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spin_lock_irqsave(&therm->sensor.alarm_program_lock, flags);
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/* enable RISING and FALLING IRQs for shutdown, THRS 0, 1, 2 and 4 */
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nvkm_wr32(device, 0x20000, 0x000003ff);
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/* shutdown: The computer should be shutdown when reached */
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nvkm_wr32(device, 0x20484, sensor->thrs_shutdown.hysteresis);
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nvkm_wr32(device, 0x20480, sensor->thrs_shutdown.temp);
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/* THRS_1 : fan boost*/
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nvkm_wr32(device, 0x204c4, sensor->thrs_fan_boost.temp);
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/* THRS_2 : critical */
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nvkm_wr32(device, 0x204c0, sensor->thrs_critical.temp);
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/* THRS_4 : down clock */
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nvkm_wr32(device, 0x20414, sensor->thrs_down_clock.temp);
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spin_unlock_irqrestore(&therm->sensor.alarm_program_lock, flags);
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nvkm_debug(subdev,
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"Programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n",
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sensor->thrs_fan_boost.temp,
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sensor->thrs_fan_boost.hysteresis,
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sensor->thrs_down_clock.temp,
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sensor->thrs_down_clock.hysteresis,
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sensor->thrs_critical.temp,
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sensor->thrs_critical.hysteresis,
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sensor->thrs_shutdown.temp,
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sensor->thrs_shutdown.hysteresis);
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}
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/* must be called with alarm_program_lock taken ! */
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static void
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g84_therm_threshold_hyst_emulation(struct nvkm_therm *therm,
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uint32_t thrs_reg, u8 status_bit,
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const struct nvbios_therm_threshold *thrs,
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enum nvkm_therm_thrs thrs_name)
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{
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struct nvkm_device *device = therm->subdev.device;
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enum nvkm_therm_thrs_direction direction;
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enum nvkm_therm_thrs_state prev_state, new_state;
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int temp, cur;
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prev_state = nvkm_therm_sensor_get_threshold_state(therm, thrs_name);
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temp = nvkm_rd32(device, thrs_reg);
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/* program the next threshold */
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if (temp == thrs->temp) {
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nvkm_wr32(device, thrs_reg, thrs->temp - thrs->hysteresis);
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new_state = NVKM_THERM_THRS_HIGHER;
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} else {
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nvkm_wr32(device, thrs_reg, thrs->temp);
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new_state = NVKM_THERM_THRS_LOWER;
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}
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/* fix the state (in case someone reprogrammed the alarms) */
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cur = therm->func->temp_get(therm);
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if (new_state == NVKM_THERM_THRS_LOWER && cur > thrs->temp)
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new_state = NVKM_THERM_THRS_HIGHER;
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else if (new_state == NVKM_THERM_THRS_HIGHER &&
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cur < thrs->temp - thrs->hysteresis)
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new_state = NVKM_THERM_THRS_LOWER;
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nvkm_therm_sensor_set_threshold_state(therm, thrs_name, new_state);
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/* find the direction */
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if (prev_state < new_state)
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direction = NVKM_THERM_THRS_RISING;
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else if (prev_state > new_state)
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direction = NVKM_THERM_THRS_FALLING;
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else
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return;
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/* advertise a change in direction */
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nvkm_therm_sensor_event(therm, thrs_name, direction);
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}
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static void
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g84_therm_intr(struct nvkm_therm *therm)
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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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struct nvbios_therm_sensor *sensor = &therm->bios_sensor;
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unsigned long flags;
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uint32_t intr;
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spin_lock_irqsave(&therm->sensor.alarm_program_lock, flags);
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intr = nvkm_rd32(device, 0x20100) & 0x3ff;
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/* THRS_4: downclock */
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if (intr & 0x002) {
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g84_therm_threshold_hyst_emulation(therm, 0x20414, 24,
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&sensor->thrs_down_clock,
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NVKM_THERM_THRS_DOWNCLOCK);
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intr &= ~0x002;
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}
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/* shutdown */
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if (intr & 0x004) {
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g84_therm_threshold_hyst_emulation(therm, 0x20480, 20,
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&sensor->thrs_shutdown,
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NVKM_THERM_THRS_SHUTDOWN);
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intr &= ~0x004;
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}
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/* THRS_1 : fan boost */
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if (intr & 0x008) {
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g84_therm_threshold_hyst_emulation(therm, 0x204c4, 21,
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&sensor->thrs_fan_boost,
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NVKM_THERM_THRS_FANBOOST);
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intr &= ~0x008;
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}
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/* THRS_2 : critical */
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if (intr & 0x010) {
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g84_therm_threshold_hyst_emulation(therm, 0x204c0, 22,
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&sensor->thrs_critical,
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NVKM_THERM_THRS_CRITICAL);
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intr &= ~0x010;
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}
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if (intr)
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nvkm_error(subdev, "intr %08x\n", intr);
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/* ACK everything */
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nvkm_wr32(device, 0x20100, 0xffffffff);
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nvkm_wr32(device, 0x1100, 0x10000); /* PBUS */
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spin_unlock_irqrestore(&therm->sensor.alarm_program_lock, flags);
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}
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void
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g84_therm_fini(struct nvkm_therm *therm)
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{
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struct nvkm_device *device = therm->subdev.device;
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/* Disable PTherm IRQs */
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nvkm_wr32(device, 0x20000, 0x00000000);
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/* ACK all PTherm IRQs */
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nvkm_wr32(device, 0x20100, 0xffffffff);
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nvkm_wr32(device, 0x1100, 0x10000); /* PBUS */
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}
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void
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g84_therm_init(struct nvkm_therm *therm)
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{
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g84_sensor_setup(therm);
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}
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static const struct nvkm_therm_func
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g84_therm = {
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.init = g84_therm_init,
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.fini = g84_therm_fini,
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.intr = g84_therm_intr,
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.pwm_ctrl = nv50_fan_pwm_ctrl,
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.pwm_get = nv50_fan_pwm_get,
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.pwm_set = nv50_fan_pwm_set,
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.pwm_clock = nv50_fan_pwm_clock,
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.temp_get = g84_temp_get,
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.program_alarms = g84_therm_program_alarms,
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};
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int
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g84_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
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struct nvkm_therm **ptherm)
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{
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struct nvkm_therm *therm;
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int ret;
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ret = nvkm_therm_new_(&g84_therm, device, type, inst, &therm);
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*ptherm = therm;
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if (ret)
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return ret;
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/* init the thresholds */
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nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_SHUTDOWN,
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NVKM_THERM_THRS_LOWER);
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nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_FANBOOST,
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NVKM_THERM_THRS_LOWER);
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nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_CRITICAL,
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NVKM_THERM_THRS_LOWER);
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nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_DOWNCLOCK,
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NVKM_THERM_THRS_LOWER);
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return 0;
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}
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