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[mabra]

Hallo !

I really look for help. I am using an open source library for ring0 access [WinRing0] and try to read this register, to obtain the temperature. But I always get zero. So I assume, I do not understand to provide the parameters right. I found code in another forum - the threads ended - but this dont helped me.

My main problem is, that I do not understand the "F3" value. If I look at the method signature of the mentioned libraries function "ReadPciConfigDwordEx", I have to provide the following:

0- 2	Function Number
3- 7	Device Number
8-15	PCI Bus Number
16-31	Reserved

0- 2	Function Number
3- 7	Device Number
8-15	PCI Bus Number
16-31	Reserved

0- 2 Function Number
3- 7 Device Number
8-15 PCI Bus Number
16-31 Reserved

From that others forums thread, I derived the following:

UInt32 pciAddress = 0x3+((0x18)<<3); //This should be "F3" !!!?????
UInt32 regAddress = 0xa4;
UInt32 value1 = 0;
int result = ReadPciConfigDwordEx(pciAddress, regAddress, ref value1);

This always return zero.

I hope, someone could shed some light on this !!

Thanks anyway,
br--mabra

[Crashtest]

AMD K8/K10/K11 CPUs got some PCI devices, all use pci device 24 on the first pci bus.

These pci devices got one PCI-Device Nb - 24 / 0x18 on the first CPU with 4 or 5 functions or PCI Device Nb - 24 and 25 on a DUAL-Opteron System

see http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116.pdf  -> 3.3 to 3.7

The F3xA4 on a single K10 CPU:

bus 0x0;

device 0x18;

func 0x3;

register 0xA4;

pciAddres: 

as a 32 Bit Bin - 00000000000000000000000011000011

or you could use 0XC3 as a hex

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