From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/gpu/drm/nouveau/nvkm/subdev/bios/therm.c | 214 +++++++++++++++++++++++ 1 file changed, 214 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/bios/therm.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/therm.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/therm.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/therm.c new file mode 100644 index 000000000..249ff6d58 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/therm.c @@ -0,0 +1,214 @@ +/* + * Copyright 2012 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 +#include +#include + +#include + +static u16 +therm_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *len, u8 *cnt) +{ + struct bit_entry bit_P; + u16 therm = 0; + + if (!bit_entry(bios, 'P', &bit_P)) { + if (bit_P.version == 1) + therm = nv_ro16(bios, bit_P.offset + 12); + else if (bit_P.version == 2) + therm = nv_ro16(bios, bit_P.offset + 16); + else + nv_error(bios, + "unknown offset for thermal in BIT P %d\n", + bit_P.version); + } + + /* exit now if we haven't found the thermal table */ + if (!therm) + return 0x0000; + + *ver = nv_ro08(bios, therm + 0); + *hdr = nv_ro08(bios, therm + 1); + *len = nv_ro08(bios, therm + 2); + *cnt = nv_ro08(bios, therm + 3); + return therm + nv_ro08(bios, therm + 1); +} + +static u16 +nvbios_therm_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len) +{ + u8 hdr, cnt; + u16 therm = therm_table(bios, ver, &hdr, len, &cnt); + if (therm && idx < cnt) + return therm + idx * *len; + return 0x0000; +} + +int +nvbios_therm_sensor_parse(struct nvkm_bios *bios, + enum nvbios_therm_domain domain, + struct nvbios_therm_sensor *sensor) +{ + s8 thrs_section, sensor_section, offset; + u8 ver, len, i; + u16 entry; + + /* we only support the core domain for now */ + if (domain != NVBIOS_THERM_DOMAIN_CORE) + return -EINVAL; + + /* Read the entries from the table */ + thrs_section = 0; + sensor_section = -1; + i = 0; + while ((entry = nvbios_therm_entry(bios, i++, &ver, &len))) { + s16 value = nv_ro16(bios, entry + 1); + + switch (nv_ro08(bios, entry + 0)) { + case 0x0: + thrs_section = value; + if (value > 0) + return 0; /* we do not try to support ambient */ + break; + case 0x01: + sensor_section++; + if (sensor_section == 0) { + offset = ((s8) nv_ro08(bios, entry + 2)) / 2; + sensor->offset_constant = offset; + } + break; + + case 0x04: + if (thrs_section == 0) { + sensor->thrs_critical.temp = (value & 0xff0) >> 4; + sensor->thrs_critical.hysteresis = value & 0xf; + } + break; + + case 0x07: + if (thrs_section == 0) { + sensor->thrs_down_clock.temp = (value & 0xff0) >> 4; + sensor->thrs_down_clock.hysteresis = value & 0xf; + } + break; + + case 0x08: + if (thrs_section == 0) { + sensor->thrs_fan_boost.temp = (value & 0xff0) >> 4; + sensor->thrs_fan_boost.hysteresis = value & 0xf; + } + break; + + case 0x10: + if (sensor_section == 0) + sensor->offset_num = value; + break; + + case 0x11: + if (sensor_section == 0) + sensor->offset_den = value; + break; + + case 0x12: + if (sensor_section == 0) + sensor->slope_mult = value; + break; + + case 0x13: + if (sensor_section == 0) + sensor->slope_div = value; + break; + case 0x32: + if (thrs_section == 0) { + sensor->thrs_shutdown.temp = (value & 0xff0) >> 4; + sensor->thrs_shutdown.hysteresis = value & 0xf; + } + break; + } + } + + return 0; +} + +int +nvbios_therm_fan_parse(struct nvkm_bios *bios, struct nvbios_therm_fan *fan) +{ + struct nvbios_therm_trip_point *cur_trip = NULL; + u8 ver, len, i; + u16 entry; + + uint8_t duty_lut[] = { 0, 0, 25, 0, 40, 0, 50, 0, + 75, 0, 85, 0, 100, 0, 100, 0 }; + + i = 0; + fan->nr_fan_trip = 0; + fan->fan_mode = NVBIOS_THERM_FAN_OTHER; + while ((entry = nvbios_therm_entry(bios, i++, &ver, &len))) { + s16 value = nv_ro16(bios, entry + 1); + + switch (nv_ro08(bios, entry + 0)) { + case 0x22: + fan->min_duty = value & 0xff; + fan->max_duty = (value & 0xff00) >> 8; + break; + case 0x24: + fan->nr_fan_trip++; + if (fan->fan_mode > NVBIOS_THERM_FAN_TRIP) + fan->fan_mode = NVBIOS_THERM_FAN_TRIP; + cur_trip = &fan->trip[fan->nr_fan_trip - 1]; + cur_trip->hysteresis = value & 0xf; + cur_trip->temp = (value & 0xff0) >> 4; + cur_trip->fan_duty = duty_lut[(value & 0xf000) >> 12]; + break; + case 0x25: + cur_trip = &fan->trip[fan->nr_fan_trip - 1]; + cur_trip->fan_duty = value; + break; + case 0x26: + if (!fan->pwm_freq) + fan->pwm_freq = value; + break; + case 0x3b: + fan->bump_period = value; + break; + case 0x3c: + fan->slow_down_period = value; + break; + case 0x46: + if (fan->fan_mode > NVBIOS_THERM_FAN_LINEAR) + fan->fan_mode = NVBIOS_THERM_FAN_LINEAR; + fan->linear_min_temp = nv_ro08(bios, entry + 1); + fan->linear_max_temp = nv_ro08(bios, entry + 2); + break; + } + } + + /* starting from fermi, fan management is always linear */ + if (nv_device(bios)->card_type >= NV_C0 && + fan->fan_mode == NVBIOS_THERM_FAN_OTHER) { + fan->fan_mode = NVBIOS_THERM_FAN_LINEAR; + } + + return 0; +} -- cgit v1.2.3-54-g00ecf