/*
* 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 <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/therm.h>
static u32
therm_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *len, u8 *cnt)
{
struct bit_entry bit_P;
u32 therm = 0 ;
if (!bit_entry(bios, 'P' , &bit_P)) {
if (bit_P.version == 1 )
therm = nvbios_rd32(bios, bit_P.offset + 12 );
else if (bit_P.version == 2 )
therm = nvbios_rd32(bios, bit_P.offset + 16 );
else
nvkm_error(&bios->subdev,
"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 0 ;
*ver = nvbios_rd08(bios, therm + 0 );
*hdr = nvbios_rd08(bios, therm + 1 );
*len = nvbios_rd08(bios, therm + 2 );
*cnt = nvbios_rd08(bios, therm + 3 );
return therm + nvbios_rd08(bios, therm + 1 );
}
static u32
nvbios_therm_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len)
{
u8 hdr, cnt;
u32 therm = therm_table(bios, ver, &hdr, len, &cnt);
if (therm && idx < cnt)
return therm + idx * *len;
return 0 ;
}
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;
u32 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 = nvbios_rd16(bios, entry + 1 );
switch (nvbios_rd08(bios, entry + 0 )) {
case 0 x0:
thrs_section = value;
if (value > 0 )
return 0 ; /* we do not try to support ambient */
break ;
case 0 x01:
sensor_section++;
if (sensor_section == 0 ) {
offset = ((s8) nvbios_rd08(bios, entry + 2 )) / 2 ;
sensor->offset_constant = offset;
}
break ;
case 0 x04:
if (thrs_section == 0 ) {
sensor->thrs_critical.temp = (value & 0 xff0) >> 4 ;
sensor->thrs_critical.hysteresis = value & 0 xf;
}
break ;
case 0 x07:
if (thrs_section == 0 ) {
sensor->thrs_down_clock.temp = (value & 0 xff0) >> 4 ;
sensor->thrs_down_clock.hysteresis = value & 0 xf;
}
break ;
case 0 x08:
if (thrs_section == 0 ) {
sensor->thrs_fan_boost.temp = (value & 0 xff0) >> 4 ;
sensor->thrs_fan_boost.hysteresis = value & 0 xf;
}
break ;
case 0 x10:
if (sensor_section == 0 )
sensor->offset_num = value;
break ;
case 0 x11:
if (sensor_section == 0 )
sensor->offset_den = value;
break ;
case 0 x12:
if (sensor_section == 0 )
sensor->slope_mult = value;
break ;
case 0 x13:
if (sensor_section == 0 )
sensor->slope_div = value;
break ;
case 0 x32:
if (thrs_section == 0 ) {
sensor->thrs_shutdown.temp = (value & 0 xff0) >> 4 ;
sensor->thrs_shutdown.hysteresis = value & 0 xf;
}
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;
u32 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 = nvbios_rd16(bios, entry + 1 );
switch (nvbios_rd08(bios, entry + 0 )) {
case 0 x22:
fan->min_duty = value & 0 xff;
fan->max_duty = (value & 0 xff00) >> 8 ;
break ;
case 0 x24:
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 & 0 xf;
cur_trip->temp = (value & 0 xff0) >> 4 ;
cur_trip->fan_duty = duty_lut[(value & 0 xf000) >> 12 ];
break ;
case 0 x25:
cur_trip = &fan->trip[fan->nr_fan_trip - 1 ];
cur_trip->fan_duty = value;
break ;
case 0 x26:
if (!fan->pwm_freq)
fan->pwm_freq = value;
break ;
case 0 x3b:
fan->bump_period = value;
break ;
case 0 x3c:
fan->slow_down_period = value;
break ;
case 0 x46:
if (fan->fan_mode > NVBIOS_THERM_FAN_LINEAR)
fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
fan->linear_min_temp = nvbios_rd08(bios, entry + 1 );
fan->linear_max_temp = nvbios_rd08(bios, entry + 2 );
break ;
}
}
/* starting from fermi, fan management is always linear */
if (bios->subdev.device->card_type >= NV_C0 &&
fan->fan_mode == NVBIOS_THERM_FAN_OTHER) {
fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
}
return 0 ;
}
Messung V0.5 in Prozent C=97 H=93 G=94
¤ Dauer der Verarbeitung: 0.6 Sekunden
¤
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