mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 02:30:53 +07:00
182 lines
5.4 KiB
Plaintext
182 lines
5.4 KiB
Plaintext
Kernel driver coretemp
|
|
======================
|
|
|
|
Supported chips:
|
|
* All Intel Core family
|
|
Prefix: 'coretemp'
|
|
CPUID: family 0x6, models 0xe (Pentium M DC), 0xf (Core 2 DC 65nm),
|
|
0x16 (Core 2 SC 65nm), 0x17 (Penryn 45nm),
|
|
0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield),
|
|
0x26 (Tunnel Creek Atom), 0x27 (Medfield Atom),
|
|
0x36 (Cedar Trail Atom)
|
|
Datasheet: Intel 64 and IA-32 Architectures Software Developer's Manual
|
|
Volume 3A: System Programming Guide
|
|
http://softwarecommunity.intel.com/Wiki/Mobility/720.htm
|
|
|
|
Author: Rudolf Marek
|
|
|
|
Description
|
|
-----------
|
|
This driver permits reading the DTS (Digital Temperature Sensor) embedded
|
|
inside Intel CPUs. This driver can read both the per-core and per-package
|
|
temperature using the appropriate sensors. The per-package sensor is new;
|
|
as of now, it is present only in the SandyBridge platform. The driver will
|
|
show the temperature of all cores inside a package under a single device
|
|
directory inside hwmon.
|
|
|
|
Temperature is measured in degrees Celsius and measurement resolution is
|
|
1 degree C. Valid temperatures are from 0 to TjMax degrees C, because
|
|
the actual value of temperature register is in fact a delta from TjMax.
|
|
|
|
Temperature known as TjMax is the maximum junction temperature of processor,
|
|
which depends on the CPU model. See table below. At this temperature, protection
|
|
mechanism will perform actions to forcibly cool down the processor. Alarm
|
|
may be raised, if the temperature grows enough (more than TjMax) to trigger
|
|
the Out-Of-Spec bit. Following table summarizes the exported sysfs files:
|
|
|
|
All Sysfs entries are named with their core_id (represented here by 'X').
|
|
tempX_input - Core temperature (in millidegrees Celsius).
|
|
tempX_max - All cooling devices should be turned on (on Core2).
|
|
tempX_crit - Maximum junction temperature (in millidegrees Celsius).
|
|
tempX_crit_alarm - Set when Out-of-spec bit is set, never clears.
|
|
Correct CPU operation is no longer guaranteed.
|
|
tempX_label - Contains string "Core X", where X is processor
|
|
number. For Package temp, this will be "Physical id Y",
|
|
where Y is the package number.
|
|
|
|
On CPU models which support it, TjMax is read from a model-specific register.
|
|
On other models, it is set to an arbitrary value based on weak heuristics.
|
|
If these heuristics don't work for you, you can pass the correct TjMax value
|
|
as a module parameter (tjmax).
|
|
|
|
Appendix A. Known TjMax lists (TBD):
|
|
Some information comes from ark.intel.com
|
|
|
|
Process Processor TjMax(C)
|
|
|
|
22nm Core i5/i7 Processors
|
|
i7 3920XM, 3820QM, 3720QM, 3667U, 3520M 105
|
|
i5 3427U, 3360M/3320M 105
|
|
i7 3770/3770K 105
|
|
i5 3570/3570K, 3550, 3470/3450 105
|
|
i7 3770S 103
|
|
i5 3570S/3550S, 3475S/3470S/3450S 103
|
|
i7 3770T 94
|
|
i5 3570T 94
|
|
i5 3470T 91
|
|
|
|
32nm Core i3/i5/i7 Processors
|
|
i7 2600 98
|
|
i7 660UM/640/620, 640LM/620, 620M, 610E 105
|
|
i5 540UM/520/430, 540M/520/450/430 105
|
|
i3 330E, 370M/350/330 90 rPGA, 105 BGA
|
|
i3 330UM 105
|
|
|
|
32nm Core i7 Extreme Processors
|
|
980X 100
|
|
|
|
32nm Celeron Processors
|
|
U3400 105
|
|
P4505/P4500 90
|
|
|
|
32nm Atom Processors
|
|
S1260/1220 95
|
|
S1240 102
|
|
Z2460 90
|
|
Z2760 90
|
|
D2700/2550/2500 100
|
|
N2850/2800/2650/2600 100
|
|
|
|
45nm Xeon Processors 5400 Quad-Core
|
|
X5492, X5482, X5472, X5470, X5460, X5450 85
|
|
E5472, E5462, E5450/40/30/20/10/05 85
|
|
L5408 95
|
|
L5430, L5420, L5410 70
|
|
|
|
45nm Xeon Processors 5200 Dual-Core
|
|
X5282, X5272, X5270, X5260 90
|
|
E5240 90
|
|
E5205, E5220 70, 90
|
|
L5240 70
|
|
L5238, L5215 95
|
|
|
|
45nm Atom Processors
|
|
D525/510/425/410 100
|
|
K525/510/425/410 100
|
|
Z670/650 90
|
|
Z560/550/540/530P/530/520PT/520/515/510PT/510P 90
|
|
Z510/500 90
|
|
N570/550 100
|
|
N475/470/455/450 100
|
|
N280/270 90
|
|
330/230 125
|
|
E680/660/640/620 90
|
|
E680T/660T/640T/620T 110
|
|
E665C/645C 90
|
|
E665CT/645CT 110
|
|
CE4170/4150/4110 110
|
|
CE4200 series unknown
|
|
CE5300 series unknown
|
|
|
|
45nm Core2 Processors
|
|
Solo ULV SU3500/3300 100
|
|
T9900/9800/9600/9550/9500/9400/9300/8300/8100 105
|
|
T6670/6500/6400 105
|
|
T6600 90
|
|
SU9600/9400/9300 105
|
|
SP9600/9400 105
|
|
SL9600/9400/9380/9300 105
|
|
P9700/9600/9500/8800/8700/8600/8400/7570 105
|
|
P7550/7450 90
|
|
|
|
45nm Core2 Quad Processors
|
|
Q9100/9000 100
|
|
|
|
45nm Core2 Extreme Processors
|
|
X9100/9000 105
|
|
QX9300 100
|
|
|
|
45nm Core i3/i5/i7 Processors
|
|
i7 940XM/920 100
|
|
i7 840QM/820/740/720 100
|
|
|
|
45nm Celeron Processors
|
|
SU2300 100
|
|
900 105
|
|
|
|
65nm Core2 Duo Processors
|
|
Solo U2200, U2100 100
|
|
U7700/7600/7500 100
|
|
T7800/7700/7600/7500/7400/7300/7250/7200/7100 100
|
|
T5870/5670/5600/5550/5500/5470/5450/5300/5270 100
|
|
T5250 100
|
|
T5800/5750/5200 85
|
|
L7700/7500/7400/7300/7200 100
|
|
|
|
65nm Core2 Extreme Processors
|
|
X7900/7800 100
|
|
|
|
65nm Core Duo Processors
|
|
U2500/2400 100
|
|
T2700/2600/2450/2400/2350/2300E/2300/2250/2050 100
|
|
L2500/2400/2300 100
|
|
|
|
65nm Core Solo Processors
|
|
U1500/1400/1300 100
|
|
T1400/1350/1300/1250 100
|
|
|
|
65nm Xeon Processors 5000 Quad-Core
|
|
X5000 90-95
|
|
E5000 80
|
|
L5000 70
|
|
L5318 95
|
|
|
|
65nm Xeon Processors 5000 Dual-Core
|
|
5080, 5063, 5060, 5050, 5030 80-90
|
|
5160, 5150, 5148, 5140, 5130, 5120, 5110 80
|
|
L5138 100
|
|
|
|
65nm Celeron Processors
|
|
T1700/1600 100
|
|
560/550/540/530 100
|