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#include <cpuid.h>
#include "zenpower.h"
#include "msr.h"
#include "os.h"
#include "zenmonitor.h"
#define AMD_STRING "AuthenticAMD"
#define ZEN_FAMILY 0x17
// AMD PPR = https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf
gboolean check_zen() {
guint32 eax = 0, ebx = 0, ecx = 0, edx = 0, ext_family;
char vendor[13];
__get_cpuid(0, &eax, &ebx, &ecx, &edx);
memcpy(vendor, &ebx, 4);
memcpy(vendor+4, &edx, 4);
memcpy(vendor+8, &ecx, 4);
vendor[12] = 0;
if (strcmp(vendor, AMD_STRING) != 0){
return FALSE;
}
__get_cpuid(1, &eax, &ebx, &ecx, &edx);
ext_family = ((eax >> 8) & 0xF) + ((eax >> 20) & 0xFF);
if (ext_family != ZEN_FAMILY){
return FALSE;
}
return TRUE;
}
gchar *cpu_model() {
guint32 eax = 0, ebx = 0, ecx = 0, edx = 0;
char model[48];
// AMD PPR: page 65-68 - CPUID_Fn80000002_EAX-CPUID_Fn80000004_EDX
__get_cpuid(0x80000002, &eax, &ebx, &ecx, &edx);
memcpy(model, &eax, 4);
memcpy(model+4, &ebx, 4);
memcpy(model+8, &ecx, 4);
memcpy(model+12, &edx, 4);
__get_cpuid(0x80000003, &eax, &ebx, &ecx, &edx);
memcpy(model+16, &eax, 4);
memcpy(model+20, &ebx, 4);
memcpy(model+24, &ecx, 4);
memcpy(model+28, &edx, 4);
__get_cpuid(0x80000004, &eax, &ebx, &ecx, &edx);
memcpy(model+32, &eax, 4);
memcpy(model+36, &ebx, 4);
memcpy(model+40, &ecx, 4);
memcpy(model+44, &edx, 4);
model[48] = 0;
return g_strdup(g_strchomp(model));
}
guint get_core_count() {
guint eax = 0, ebx = 0, ecx = 0, edx = 0;
guint logical_cpus, threads_per_code;
// AMD PPR: page 57 - CPUID_Fn00000001_EBX
__get_cpuid(1, &eax, &ebx, &ecx, &edx);
logical_cpus = (ebx >> 16) & 0xFF;
// AMD PPR: page 82 - CPUID_Fn8000001E_EBX
__get_cpuid(0x8000001E, &eax, &ebx, &ecx, &edx);
threads_per_code = ((ebx >> 8) & 0xF) + 1;
if (threads_per_code == 0)
return logical_cpus;
return logical_cpus / threads_per_code;
}
SensorInit *sensor_init_new() {
return g_new0(SensorInit, 1);
}
void sensor_init_free(SensorInit *s) {
if (s) {
g_free(s->label);
g_free(s->hint);
g_free(s);
}
}
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