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