213 lines
5.5 KiB
C
213 lines
5.5 KiB
C
/*
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* Copyright 2012 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 <subdev/bios.h>
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#include <subdev/bios/bit.h>
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#include <subdev/bios/therm.h>
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static u32
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therm_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *len, u8 *cnt)
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{
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struct bit_entry bit_P;
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u32 therm = 0;
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if (!bit_entry(bios, 'P', &bit_P)) {
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if (bit_P.version == 1)
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therm = nvbios_rd32(bios, bit_P.offset + 12);
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else if (bit_P.version == 2)
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therm = nvbios_rd32(bios, bit_P.offset + 16);
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else
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nvkm_error(&bios->subdev,
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"unknown offset for thermal in BIT P %d\n",
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bit_P.version);
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}
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/* exit now if we haven't found the thermal table */
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if (!therm)
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return 0;
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*ver = nvbios_rd08(bios, therm + 0);
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*hdr = nvbios_rd08(bios, therm + 1);
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*len = nvbios_rd08(bios, therm + 2);
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*cnt = nvbios_rd08(bios, therm + 3);
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return therm + nvbios_rd08(bios, therm + 1);
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}
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static u32
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nvbios_therm_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len)
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{
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u8 hdr, cnt;
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u32 therm = therm_table(bios, ver, &hdr, len, &cnt);
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if (therm && idx < cnt)
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return therm + idx * *len;
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return 0;
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}
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int
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nvbios_therm_sensor_parse(struct nvkm_bios *bios,
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enum nvbios_therm_domain domain,
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struct nvbios_therm_sensor *sensor)
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{
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s8 thrs_section, sensor_section, offset;
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u8 ver, len, i;
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u32 entry;
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/* we only support the core domain for now */
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if (domain != NVBIOS_THERM_DOMAIN_CORE)
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return -EINVAL;
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/* Read the entries from the table */
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thrs_section = 0;
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sensor_section = -1;
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i = 0;
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while ((entry = nvbios_therm_entry(bios, i++, &ver, &len))) {
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s16 value = nvbios_rd16(bios, entry + 1);
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switch (nvbios_rd08(bios, entry + 0)) {
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case 0x0:
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thrs_section = value;
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if (value > 0)
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return 0; /* we do not try to support ambient */
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break;
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case 0x01:
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sensor_section++;
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if (sensor_section == 0) {
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offset = ((s8) nvbios_rd08(bios, entry + 2)) / 2;
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sensor->offset_constant = offset;
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}
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break;
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case 0x04:
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if (thrs_section == 0) {
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sensor->thrs_critical.temp = (value & 0xff0) >> 4;
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sensor->thrs_critical.hysteresis = value & 0xf;
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}
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break;
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case 0x07:
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if (thrs_section == 0) {
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sensor->thrs_down_clock.temp = (value & 0xff0) >> 4;
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sensor->thrs_down_clock.hysteresis = value & 0xf;
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}
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break;
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case 0x08:
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if (thrs_section == 0) {
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sensor->thrs_fan_boost.temp = (value & 0xff0) >> 4;
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sensor->thrs_fan_boost.hysteresis = value & 0xf;
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}
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break;
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case 0x10:
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if (sensor_section == 0)
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sensor->offset_num = value;
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break;
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case 0x11:
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if (sensor_section == 0)
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sensor->offset_den = value;
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break;
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case 0x12:
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if (sensor_section == 0)
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sensor->slope_mult = value;
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break;
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case 0x13:
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if (sensor_section == 0)
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sensor->slope_div = value;
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break;
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case 0x32:
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if (thrs_section == 0) {
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sensor->thrs_shutdown.temp = (value & 0xff0) >> 4;
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sensor->thrs_shutdown.hysteresis = value & 0xf;
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}
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break;
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}
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}
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return 0;
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}
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int
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nvbios_therm_fan_parse(struct nvkm_bios *bios, struct nvbios_therm_fan *fan)
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{
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struct nvbios_therm_trip_point *cur_trip = NULL;
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u8 ver, len, i;
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u32 entry;
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uint8_t duty_lut[] = { 0, 0, 25, 0, 40, 0, 50, 0,
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75, 0, 85, 0, 100, 0, 100, 0 };
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i = 0;
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fan->nr_fan_trip = 0;
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fan->fan_mode = NVBIOS_THERM_FAN_OTHER;
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while ((entry = nvbios_therm_entry(bios, i++, &ver, &len))) {
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s16 value = nvbios_rd16(bios, entry + 1);
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switch (nvbios_rd08(bios, entry + 0)) {
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case 0x22:
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fan->min_duty = value & 0xff;
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fan->max_duty = (value & 0xff00) >> 8;
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break;
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case 0x24:
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fan->nr_fan_trip++;
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if (fan->fan_mode > NVBIOS_THERM_FAN_TRIP)
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fan->fan_mode = NVBIOS_THERM_FAN_TRIP;
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cur_trip = &fan->trip[fan->nr_fan_trip - 1];
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cur_trip->hysteresis = value & 0xf;
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cur_trip->temp = (value & 0xff0) >> 4;
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cur_trip->fan_duty = duty_lut[(value & 0xf000) >> 12];
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break;
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case 0x25:
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cur_trip = &fan->trip[fan->nr_fan_trip - 1];
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cur_trip->fan_duty = value;
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break;
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case 0x26:
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if (!fan->pwm_freq)
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fan->pwm_freq = value;
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break;
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case 0x3b:
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fan->bump_period = value;
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break;
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case 0x3c:
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fan->slow_down_period = value;
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break;
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case 0x46:
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if (fan->fan_mode > NVBIOS_THERM_FAN_LINEAR)
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fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
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fan->linear_min_temp = nvbios_rd08(bios, entry + 1);
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fan->linear_max_temp = nvbios_rd08(bios, entry + 2);
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break;
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}
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}
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/* starting from fermi, fan management is always linear */
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if (bios->subdev.device->card_type >= NV_C0 &&
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fan->fan_mode == NVBIOS_THERM_FAN_OTHER) {
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fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
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}
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return 0;
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}
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