diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/therm/g84.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/therm/g84.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/g84.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/g84.c new file mode 100644 index 000000000..4af86f2d3 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/g84.c @@ -0,0 +1,247 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * 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: Ben Skeggs + * Martin Peres + */ +#include "priv.h" + +#include <subdev/fuse.h> + +int +g84_temp_get(struct nvkm_therm *therm) +{ + struct nvkm_device *device = therm->subdev.device; + + if (nvkm_fuse_read(device->fuse, 0x1a8) == 1) + return nvkm_rd32(device, 0x20400); + else + return -ENODEV; +} + +void +g84_sensor_setup(struct nvkm_therm *therm) +{ + struct nvkm_device *device = therm->subdev.device; + + /* enable temperature reading for cards with insane defaults */ + if (nvkm_fuse_read(device->fuse, 0x1a8) == 1) { + nvkm_mask(device, 0x20008, 0x80008000, 0x80000000); + nvkm_mask(device, 0x2000c, 0x80000003, 0x00000000); + mdelay(20); /* wait for the temperature to stabilize */ + } +} + +static void +g84_therm_program_alarms(struct nvkm_therm *therm) +{ + struct nvbios_therm_sensor *sensor = &therm->bios_sensor; + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_device *device = subdev->device; + unsigned long flags; + + spin_lock_irqsave(&therm->sensor.alarm_program_lock, flags); + + /* enable RISING and FALLING IRQs for shutdown, THRS 0, 1, 2 and 4 */ + nvkm_wr32(device, 0x20000, 0x000003ff); + + /* shutdown: The computer should be shutdown when reached */ + nvkm_wr32(device, 0x20484, sensor->thrs_shutdown.hysteresis); + nvkm_wr32(device, 0x20480, sensor->thrs_shutdown.temp); + + /* THRS_1 : fan boost*/ + nvkm_wr32(device, 0x204c4, sensor->thrs_fan_boost.temp); + + /* THRS_2 : critical */ + nvkm_wr32(device, 0x204c0, sensor->thrs_critical.temp); + + /* THRS_4 : down clock */ + nvkm_wr32(device, 0x20414, sensor->thrs_down_clock.temp); + spin_unlock_irqrestore(&therm->sensor.alarm_program_lock, flags); + + nvkm_debug(subdev, + "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); + +} + +/* must be called with alarm_program_lock taken ! */ +static void +g84_therm_threshold_hyst_emulation(struct nvkm_therm *therm, + uint32_t thrs_reg, u8 status_bit, + const struct nvbios_therm_threshold *thrs, + enum nvkm_therm_thrs thrs_name) +{ + struct nvkm_device *device = therm->subdev.device; + enum nvkm_therm_thrs_direction direction; + enum nvkm_therm_thrs_state prev_state, new_state; + int temp, cur; + + prev_state = nvkm_therm_sensor_get_threshold_state(therm, thrs_name); + temp = nvkm_rd32(device, thrs_reg); + + /* program the next threshold */ + if (temp == thrs->temp) { + nvkm_wr32(device, thrs_reg, thrs->temp - thrs->hysteresis); + new_state = NVKM_THERM_THRS_HIGHER; + } else { + nvkm_wr32(device, thrs_reg, thrs->temp); + new_state = NVKM_THERM_THRS_LOWER; + } + + /* fix the state (in case someone reprogrammed the alarms) */ + cur = therm->func->temp_get(therm); + if (new_state == NVKM_THERM_THRS_LOWER && cur > thrs->temp) + new_state = NVKM_THERM_THRS_HIGHER; + else if (new_state == NVKM_THERM_THRS_HIGHER && + cur < thrs->temp - thrs->hysteresis) + new_state = NVKM_THERM_THRS_LOWER; + nvkm_therm_sensor_set_threshold_state(therm, thrs_name, new_state); + + /* find the direction */ + if (prev_state < new_state) + direction = NVKM_THERM_THRS_RISING; + else if (prev_state > new_state) + direction = NVKM_THERM_THRS_FALLING; + else + return; + + /* advertise a change in direction */ + nvkm_therm_sensor_event(therm, thrs_name, direction); +} + +static void +g84_therm_intr(struct nvkm_therm *therm) +{ + struct nvkm_subdev *subdev = &therm->subdev; + struct nvkm_device *device = subdev->device; + struct nvbios_therm_sensor *sensor = &therm->bios_sensor; + unsigned long flags; + uint32_t intr; + + spin_lock_irqsave(&therm->sensor.alarm_program_lock, flags); + + intr = nvkm_rd32(device, 0x20100) & 0x3ff; + + /* THRS_4: downclock */ + if (intr & 0x002) { + g84_therm_threshold_hyst_emulation(therm, 0x20414, 24, + &sensor->thrs_down_clock, + NVKM_THERM_THRS_DOWNCLOCK); + intr &= ~0x002; + } + + /* shutdown */ + if (intr & 0x004) { + g84_therm_threshold_hyst_emulation(therm, 0x20480, 20, + &sensor->thrs_shutdown, + NVKM_THERM_THRS_SHUTDOWN); + intr &= ~0x004; + } + + /* THRS_1 : fan boost */ + if (intr & 0x008) { + g84_therm_threshold_hyst_emulation(therm, 0x204c4, 21, + &sensor->thrs_fan_boost, + NVKM_THERM_THRS_FANBOOST); + intr &= ~0x008; + } + + /* THRS_2 : critical */ + if (intr & 0x010) { + g84_therm_threshold_hyst_emulation(therm, 0x204c0, 22, + &sensor->thrs_critical, + NVKM_THERM_THRS_CRITICAL); + intr &= ~0x010; + } + + if (intr) + nvkm_error(subdev, "intr %08x\n", intr); + + /* ACK everything */ + nvkm_wr32(device, 0x20100, 0xffffffff); + nvkm_wr32(device, 0x1100, 0x10000); /* PBUS */ + + spin_unlock_irqrestore(&therm->sensor.alarm_program_lock, flags); +} + +void +g84_therm_fini(struct nvkm_therm *therm) +{ + struct nvkm_device *device = therm->subdev.device; + + /* Disable PTherm IRQs */ + nvkm_wr32(device, 0x20000, 0x00000000); + + /* ACK all PTherm IRQs */ + nvkm_wr32(device, 0x20100, 0xffffffff); + nvkm_wr32(device, 0x1100, 0x10000); /* PBUS */ +} + +void +g84_therm_init(struct nvkm_therm *therm) +{ + g84_sensor_setup(therm); +} + +static const struct nvkm_therm_func +g84_therm = { + .init = g84_therm_init, + .fini = g84_therm_fini, + .intr = g84_therm_intr, + .pwm_ctrl = nv50_fan_pwm_ctrl, + .pwm_get = nv50_fan_pwm_get, + .pwm_set = nv50_fan_pwm_set, + .pwm_clock = nv50_fan_pwm_clock, + .temp_get = g84_temp_get, + .program_alarms = g84_therm_program_alarms, +}; + +int +g84_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_therm **ptherm) +{ + struct nvkm_therm *therm; + int ret; + + ret = nvkm_therm_new_(&g84_therm, device, type, inst, &therm); + *ptherm = therm; + if (ret) + return ret; + + /* init the thresholds */ + nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_SHUTDOWN, + NVKM_THERM_THRS_LOWER); + nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_FANBOOST, + NVKM_THERM_THRS_LOWER); + nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_CRITICAL, + NVKM_THERM_THRS_LOWER); + nvkm_therm_sensor_set_threshold_state(therm, NVKM_THERM_THRS_DOWNCLOCK, + NVKM_THERM_THRS_LOWER); + return 0; +} |