/// <summary>
/// Send Raw PECI request to power cap CPU.
/// </summary>
internal SendRawPeciRequest(PeciTargetCpu Cpu, MsrTargetPowerLimit powerlimit, ushort watts, byte correctionTime)
{
this.peciAddress = (byte)Cpu; // PECI Client Address and interface selection
this.writeLenght = 0x0A; // Write Length (part of PECI standard header)
this.readLenght = 0x01; // Read Length (part of PECI standard header)
this.peciCommand = GetMsrPayload(powerlimit, watts, correctionTime); // PECI Payload.
}
/// <summary>
/// Send Raw PECI request to power cap CPU.
/// </summary>
internal SendRawPeciRequest(PeciTargetCpu Cpu, MsrTargetPowerLimit powerlimit, ushort watts, byte correctionTime)
{
this.peciAddress = (byte)Cpu; // PECI Client Address and interface selection
this.writeLenght = 0x0A; // Write Length (part of PECI standard header)
this.readLenght = 0x01; // Read Length (part of PECI standard header)
this.peciCommand = GetMsrPayload(powerlimit, watts, correctionTime); // PECI Payload.
}
/// <summary>
/// Returns the PECI Power Load for MSR Power Capping
/// </summary>
/// <param name="targetLimit">Power Limit number</param>
/// <param name="watts">Power Limit value</param>
/// <param name="correctionTime">Time Window</param>
private byte[] GetMsrPayload(MsrTargetPowerLimit targetLimit, ushort watts, byte correctionTime)
{
byte lockval = 0x7F;
byte[] PeciPayload = new byte[9];
PeciPayload[0] = 0xA5; // codes understood by Intel ME FW
PeciPayload[1] = 0x00; // only domain zero supported.
PeciPayload[2] = (byte)targetLimit; // target limit (PL1 or PL2)
PeciPayload[3] = 0x00;
PeciPayload[4] = 0x00;
Buffer.BlockCopy(PowerLimitMsr(watts, correctionTime), 0, PeciPayload, 5, 4);
if (targetLimit == MsrTargetPowerLimit.PowerLimt2)
{
PeciPayload[8] = (byte)(PeciPayload[8] & lockval);
}
return(PeciPayload);
}
/// <summary>
/// Returns the PECI Power Load for MSR Power Capping
/// </summary>
/// <param name="targetLimit">Power Limit number</param>
/// <param name="watts">Power Limit value</param>
/// <param name="correctionTime">Time Window</param>
private byte[] GetMsrPayload(MsrTargetPowerLimit targetLimit, ushort watts, byte correctionTime)
{
byte lockval = 0x7F;
byte[] PeciPayload = new byte[9];
PeciPayload[0] = 0xA5; // codes understood by Intel ME FW
PeciPayload[1] = 0x00; // only domain zero supported.
PeciPayload[2] = (byte)targetLimit; // target limit (PL1 or PL2)
PeciPayload[3] = 0x00;
PeciPayload[4] = 0x00;
Buffer.BlockCopy(PowerLimitMsr(watts, correctionTime), 0, PeciPayload, 5, 4);
if (targetLimit == MsrTargetPowerLimit.PowerLimt2)
PeciPayload[8] = (byte)(PeciPayload[8] & lockval);
return PeciPayload;
}
