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Fix topology in AMD, using extended level to fetch it

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Dr-Noob
2020-06-22 15:04:32 +02:00
parent 8211f24f46
commit 1ce6b97bec
1 changed files with 23 additions and 3 deletions
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26
src/standart.c
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@@ -227,8 +227,7 @@ struct topology* get_topology_info(struct cpuInfo* cpu) {
printBug("Unexpected type in cpuid 0x0000000B (expected 1, got %d)", type);
return NULL;
}
topo->smt = ebx & 0xFFFF;
topo->smt = ebx & 0xFFFF;
eax = 0x0000000B;
ecx = 0x00000001;
@@ -249,7 +248,28 @@ struct topology* get_topology_info(struct cpuInfo* cpu) {
}
break;
case VENDOR_AMD:
printBug("Unimplemented!");
if (cpu->maxExtendedLevels >= 0x80000008) {
eax = 0x80000008;
cpuid(&eax, &ebx, &ecx, &edx);
topo->logical_cores = (ecx & 0xFF) + 1;
if (cpu->maxExtendedLevels >= 0x8000001E) {
eax = 0x8000001E;
cpuid(&eax, &ebx, &ecx, &edx);
topo->smt = ((ebx >> 8) & 0x03) + 1;
}
else {
printWarn("Can't read topology information from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x8000001E, cpu->maxLevels);
topo->smt = 1;
}
topo->physical_cores = topo->logical_cores / topo->smt;
}
else {
printWarn("Can't read topology information from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x80000008, cpu->maxLevels);
topo->physical_cores = 1;
topo->logical_cores = 1;
topo->smt = 1;
}
break;
default:
printBug("Cant get topology because VENDOR is empty");