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Implement INFO_TEMPERATURE for Intel in cpu_msrinfo()

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Xorg 2015-10-06 15:27:08 +02:00
parent f11a5b6d16
commit 11b51a105c
1 changed files with 14 additions and 0 deletions
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14
libcpuid/rdmsr.c
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@ -492,6 +492,20 @@ int cpu_msrinfo(struct msr_driver_t* handle, cpu_msrinfo_request_t which)
return (int) ((r >> 40) & 0x1f) * 100;
}
case INFO_TEMPERATURE:
if(cpu_vendor() == VENDOR_INTEL)
{
// https://github.com/ajaiantilal/i7z/blob/5023138d7c35c4667c938b853e5ea89737334e92/helper_functions.c#L59
unsigned long val = cpu_rdmsr_range(handle, IA32_THERM_STATUS, 63, 0, &error_indx);
int digital_readout = get_bits_value(val, 23, 16);
int thermal_status = get_bits_value(val, 32, 31);
val = cpu_rdmsr_range(handle, IA32_TEMPERATURE_TARGET, 63, 0, &error_indx);
int PROCHOT_temp = get_bits_value(val, 23, 16);
// These bits are thermal status : 1 if supported, 0 else
if(thermal_status)
return(PROCHOT_temp - digital_readout); // Temperature is prochot - digital readout
}
return CPU_INVALID_VALUE;
case INFO_THROTTLING:
return CPU_INVALID_VALUE;
case INFO_VOLTAGE: