/*
* Copyright 2014 Martin Peres
*
* 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/fan.h>
static u32
nvbios_fan_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
struct bit_entry bit_P;
u32 fan = 0 ;
if (!bit_entry(bios, 'P' , &bit_P)) {
if (bit_P.version == 2 && bit_P.length >= 0 x5c)
fan = nvbios_rd32(bios, bit_P.offset + 0 x58);
if (fan) {
*ver = nvbios_rd08(bios, fan + 0 );
switch (*ver) {
case 0 x10:
*hdr = nvbios_rd08(bios, fan + 1 );
*len = nvbios_rd08(bios, fan + 2 );
*cnt = nvbios_rd08(bios, fan + 3 );
return fan;
default :
break ;
}
}
}
return 0 ;
}
static u32
nvbios_fan_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr,
u8 *cnt, u8 *len)
{
u32 data = nvbios_fan_table(bios, ver, hdr, cnt, len);
if (data && idx < *cnt)
return data + *hdr + (idx * (*len));
return 0 ;
}
u32
nvbios_fan_parse(struct nvkm_bios *bios, struct nvbios_therm_fan *fan)
{
u8 ver, hdr, cnt, len;
u32 data = nvbios_fan_entry(bios, 0 , &ver, &hdr, &cnt, &len);
if (data) {
u8 type = nvbios_rd08(bios, data + 0 x00);
switch (type) {
case 0 :
fan->type = NVBIOS_THERM_FAN_TOGGLE;
break ;
case 1 :
case 2 :
/* TODO: Understand the difference between the two! */
fan->type = NVBIOS_THERM_FAN_PWM;
break ;
default :
fan->type = NVBIOS_THERM_FAN_UNK;
}
fan->fan_mode = NVBIOS_THERM_FAN_LINEAR;
fan->min_duty = nvbios_rd08(bios, data + 0 x02);
fan->max_duty = nvbios_rd08(bios, data + 0 x03);
fan->pwm_freq = nvbios_rd32(bios, data + 0 x0b) & 0 xffffff;
}
return data;
}
Messung V0.5 in Prozent C=98 H=100 G=98
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-10-06)
¤
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