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Add cache info for new AMD CPUs (0x8000001D) (#171)

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Nikolay Hohsadze 2021-10-18 15:14:29 +03:00 committed by GitHub
parent 2939ece4d2
commit 0925f6953c
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3 changed files with 136 additions and 15 deletions
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5
include/cpuinfo_x86.h
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@ -21,6 +21,11 @@
CPU_FEATURES_START_CPP_NAMESPACE
// CPUID Vendors
#define CPU_FEATURES_VENDOR_GENUINE_INTEL "GenuineIntel"
#define CPU_FEATURES_VENDOR_AUTHENTIC_AMD "AuthenticAMD"
#define CPU_FEATURES_VENDOR_HYGON_GENUINE "HygonGenuine"
// See https://en.wikipedia.org/wiki/CPUID for a list of x86 cpu features.
// The field names are based on the short name provided in the wikipedia tables.
typedef struct {

50
src/cpuinfo_x86.c
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@ -256,6 +256,10 @@ static int IsVendor(const Leaf leaf, const char* const name) {
return leaf.ebx == ebx && leaf.ecx == ecx && leaf.edx == edx;
}
static int IsVendorByX86Info(const X86Info* info, const char* const name) {
return memcmp(info->vendor, name, sizeof(info->vendor)) == 0;
}
static const CacheLevelInfo kEmptyCacheLevelInfo;
static CacheLevelInfo GetCacheLevelInfo(const uint32_t reg) {
@ -1140,10 +1144,13 @@ static void ParseLeaf2(const int max_cpuid_leaf, CacheInfo* info) {
}
}
static void ParseLeaf4(const int max_cpuid_leaf, CacheInfo* info) {
// For newer Intel CPUs uses "CPUID, eax=0x00000004".
// For newer AMD CPUs uses "CPUID, eax=0x8000001D"
static void ParseCacheInfo(const int max_cpuid_leaf, uint32_t leaf_id,
CacheInfo* info) {
info->size = 0;
for (int cache_id = 0; cache_id < CPU_FEATURES_MAX_CACHE_LEVEL; cache_id++) {
const Leaf leaf = SafeCpuIdEx(max_cpuid_leaf, 4, cache_id);
const Leaf leaf = SafeCpuIdEx(max_cpuid_leaf, leaf_id, cache_id);
CacheType cache_type = ExtractBitRange(leaf.eax, 4, 0);
if (cache_type == CPU_FEATURE_CACHE_NULL) {
info->levels[cache_id] = kEmptyCacheLevelInfo;
@ -1402,10 +1409,13 @@ static void ParseCpuId(const uint32_t max_cpuid_leaf, X86Info* info,
// Reference
// https://en.wikipedia.org/wiki/CPUID#EAX=80000000h:_Get_Highest_Extended_Function_Implemented.
static Leaf GetLeafByIdAMD(uint32_t leaf_id) {
uint32_t max_extended = CpuId(0x80000000).eax;
return SafeCpuId(max_extended, leaf_id);
}
static void ParseExtraAMDCpuId(X86Info* info, OsPreserves os_preserves) {
const Leaf leaf_80000000 = CpuId(0x80000000);
const uint32_t max_extended_cpuid_leaf = leaf_80000000.eax;
const Leaf leaf_80000001 = SafeCpuId(max_extended_cpuid_leaf, 0x80000001);
const Leaf leaf_80000001 = GetLeafByIdAMD(0x80000001);
X86Features* const features = &info->features;
@ -1425,9 +1435,9 @@ static const OsPreserves kEmptyOsPreserves;
X86Info GetX86Info(void) {
X86Info info = kEmptyX86Info;
const Leaf leaf_0 = CpuId(0);
const bool is_intel = IsVendor(leaf_0, "GenuineIntel");
const bool is_amd = IsVendor(leaf_0, "AuthenticAMD");
const bool is_hygon = IsVendor(leaf_0, "HygonGenuine");
const bool is_intel = IsVendor(leaf_0, CPU_FEATURES_VENDOR_GENUINE_INTEL);
const bool is_amd = IsVendor(leaf_0, CPU_FEATURES_VENDOR_AUTHENTIC_AMD);
const bool is_hygon = IsVendor(leaf_0, CPU_FEATURES_VENDOR_HYGON_GENUINE);
SetVendor(leaf_0, info.vendor);
if (is_intel || is_amd || is_hygon) {
OsPreserves os_preserves = kEmptyOsPreserves;
@ -1443,10 +1453,20 @@ X86Info GetX86Info(void) {
CacheInfo GetX86CacheInfo(void) {
CacheInfo info = kEmptyCacheInfo;
const Leaf leaf_0 = CpuId(0);
const uint32_t max_cpuid_leaf = leaf_0.eax;
if (IsVendor(leaf_0, "GenuineIntel")) {
ParseLeaf2(max_cpuid_leaf, &info);
ParseLeaf4(max_cpuid_leaf, &info);
if (IsVendor(leaf_0, CPU_FEATURES_VENDOR_GENUINE_INTEL)) {
ParseLeaf2(leaf_0.eax, &info);
ParseCacheInfo(leaf_0.eax, 4, &info);
} else if (IsVendor(leaf_0, CPU_FEATURES_VENDOR_AUTHENTIC_AMD) ||
IsVendor(leaf_0, CPU_FEATURES_VENDOR_HYGON_GENUINE)) {
const uint32_t max_ext = CpuId(0x80000000).eax;
const uint32_t cpuid_ext = SafeCpuId(max_ext, 0x80000001).ecx;
// If CPUID Fn8000_0001_ECX[TopologyExtensions]==0
// then CPUID Fn8000_0001_E[D,C,B,A]X is reserved.
// https://www.amd.com/system/files/TechDocs/25481.pdf
if (IsBitSet(cpuid_ext, 22)) {
ParseCacheInfo(max_ext, 0x8000001D, &info);
}
}
return info;
}
@ -1454,7 +1474,7 @@ CacheInfo GetX86CacheInfo(void) {
#define CPUID(FAMILY, MODEL) ((((FAMILY)&0xFF) << 8) | ((MODEL)&0xFF))
X86Microarchitecture GetX86Microarchitecture(const X86Info* info) {
if (memcmp(info->vendor, "GenuineIntel", sizeof(info->vendor)) == 0) {
if (IsVendorByX86Info(info, CPU_FEATURES_VENDOR_GENUINE_INTEL)) {
switch (CPUID(info->family, info->model)) {
case CPUID(0x06, 0x1C): // Intel(R) Atom(TM) CPU 230 @ 1.60GHz
case CPUID(0x06, 0x35):
@ -1553,7 +1573,7 @@ X86Microarchitecture GetX86Microarchitecture(const X86Info* info) {
return X86_UNKNOWN;
}
}
if (memcmp(info->vendor, "AuthenticAMD", sizeof(info->vendor)) == 0) {
if (IsVendorByX86Info(info, CPU_FEATURES_VENDOR_AUTHENTIC_AMD)) {
switch (CPUID(info->family, info->model)) {
// https://en.wikichip.org/wiki/amd/cpuid
case CPUID(0xF, 0x04):
@ -1661,7 +1681,7 @@ X86Microarchitecture GetX86Microarchitecture(const X86Info* info) {
return X86_UNKNOWN;
}
}
if (memcmp(info->vendor, "HygonGenuine", sizeof(info->vendor)) == 0) {
if (IsVendorByX86Info(info, CPU_FEATURES_VENDOR_HYGON_GENUINE)) {
switch (CPUID(info->family, info->model)) {
case CPUID(0x18, 0x00):
return AMD_ZEN;

96
test/cpuinfo_x86_test.cc
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@ -435,6 +435,54 @@ TEST_F(CpuidX86Test, AMD_K15_PILEDRIVER_ABU_DHABI) {
EXPECT_STREQ(brand_string, "AMD Opteron(tm) Processor 6376 ");
}
// http://users.atw.hu/instlatx64/AuthenticAMD/AuthenticAMD0600F20_K15_AbuDhabi_CPUID0.txt
TEST_F(CpuidX86Test, AMD_K15_PILEDRIVER_ABU_DHABI_CACHE_INFO) {
g_fake_cpu->SetLeaves({
{{0x00000000, 0}, Leaf{0x0000000D, 0x68747541, 0x444D4163, 0x69746E65}},
{{0x00000001, 0}, Leaf{0x00600F20, 0x00100800, 0x3E98320B, 0x178BFBFF}},
{{0x80000000, 0}, Leaf{0x8000001E, 0x68747541, 0x444D4163, 0x69746E65}},
{{0x80000001, 0}, Leaf{0x00600F20, 0x30000000, 0x01EBBFFF, 0x2FD3FBFF}},
{{0x8000001D, 0}, Leaf{0x00000121, 0x00C0003F, 0x0000003F, 0x00000000}},
{{0x8000001D, 1}, Leaf{0x00004122, 0x0040003F, 0x000001FF, 0x00000000}},
{{0x8000001D, 2}, Leaf{0x00004143, 0x03C0003F, 0x000007FF, 0x00000001}},
{{0x8000001D, 3}, Leaf{0x0001C163, 0x0BC0003F, 0x000007FF, 0x00000001}},
});
const auto info = GetX86CacheInfo();
EXPECT_EQ(info.size, 4);
EXPECT_EQ(info.levels[0].level, 1);
EXPECT_EQ(info.levels[0].cache_type, 1);
EXPECT_EQ(info.levels[0].cache_size, 16 * KiB);
EXPECT_EQ(info.levels[0].ways, 4);
EXPECT_EQ(info.levels[0].line_size, 64);
EXPECT_EQ(info.levels[0].tlb_entries, 64);
EXPECT_EQ(info.levels[0].partitioning, 1);
EXPECT_EQ(info.levels[1].level, 1);
EXPECT_EQ(info.levels[1].cache_type, 2);
EXPECT_EQ(info.levels[1].cache_size, 64 * KiB);
EXPECT_EQ(info.levels[1].ways, 2);
EXPECT_EQ(info.levels[1].line_size, 64);
EXPECT_EQ(info.levels[1].tlb_entries, 512);
EXPECT_EQ(info.levels[1].partitioning, 1);
EXPECT_EQ(info.levels[2].level, 2);
EXPECT_EQ(info.levels[2].cache_type, 3);
EXPECT_EQ(info.levels[2].cache_size, 2 * MiB);
EXPECT_EQ(info.levels[2].ways, 16);
EXPECT_EQ(info.levels[2].line_size, 64);
EXPECT_EQ(info.levels[2].tlb_entries, 2048);
EXPECT_EQ(info.levels[2].partitioning, 1);
EXPECT_EQ(info.levels[3].level, 3);
EXPECT_EQ(info.levels[3].cache_type, 3);
EXPECT_EQ(info.levels[3].cache_size, 6 * MiB);
EXPECT_EQ(info.levels[3].ways, 48);
EXPECT_EQ(info.levels[3].line_size, 64);
EXPECT_EQ(info.levels[3].tlb_entries, 2048);
EXPECT_EQ(info.levels[3].partitioning, 1);
}
// http://users.atw.hu/instlatx64/AuthenticAMD/AuthenticAMD0600F12_K15_Interlagos_CPUID3.txt
TEST_F(CpuidX86Test, AMD_K15_BULLDOZER_INTERLAGOS) {
g_fake_cpu->SetLeaves({
@ -631,6 +679,54 @@ TEST_F(CpuidX86Test, AMD_K18_ZEN_DHYANA) {
EXPECT_STREQ(brand_string, "Hygon C86 3185 8-core Processor ");
}
// http://users.atw.hu/instlatx64/HygonGenuine/HygonGenuine0900F02_Hygon_CPUID.txt
TEST_F(CpuidX86Test, AMD_K18_ZEN_DHYANA_CACHE_INFO) {
g_fake_cpu->SetLeaves({
{{0x00000000, 0}, Leaf{0x0000000D, 0x6F677948, 0x656E6975, 0x6E65476E}},
{{0x00000001, 0}, Leaf{0x00900F02, 0x00100800, 0x74D83209, 0x178BFBFF}},
{{0x80000000, 0}, Leaf{0x8000001F, 0x6F677948, 0x656E6975, 0x6E65476E}},
{{0x80000001, 0}, Leaf{0x00900F02, 0x60000000, 0x35C233FF, 0x2FD3FBFF}},
{{0x8000001D, 0}, Leaf{0x00004121, 0x01C0003F, 0x0000003F, 0x00000000}},
{{0x8000001D, 1}, Leaf{0x00004122, 0x00C0003F, 0x000000FF, 0x00000000}},
{{0x8000001D, 2}, Leaf{0x00004143, 0x01C0003F, 0x000003FF, 0x00000002}},
{{0x8000001D, 3}, Leaf{0x0001C163, 0x03C0003F, 0x00001FFF, 0x00000001}},
});
const auto info = GetX86CacheInfo();
EXPECT_EQ(info.size, 4);
EXPECT_EQ(info.levels[0].level, 1);
EXPECT_EQ(info.levels[0].cache_type, 1);
EXPECT_EQ(info.levels[0].cache_size, 32 * KiB);
EXPECT_EQ(info.levels[0].ways, 8);
EXPECT_EQ(info.levels[0].line_size, 64);
EXPECT_EQ(info.levels[0].tlb_entries, 64);
EXPECT_EQ(info.levels[0].partitioning, 1);
EXPECT_EQ(info.levels[1].level, 1);
EXPECT_EQ(info.levels[1].cache_type, 2);
EXPECT_EQ(info.levels[1].cache_size, 64 * KiB);
EXPECT_EQ(info.levels[1].ways, 4);
EXPECT_EQ(info.levels[1].line_size, 64);
EXPECT_EQ(info.levels[1].tlb_entries, 256);
EXPECT_EQ(info.levels[1].partitioning, 1);
EXPECT_EQ(info.levels[2].level, 2);
EXPECT_EQ(info.levels[2].cache_type, 3);
EXPECT_EQ(info.levels[2].cache_size, 512 * KiB);
EXPECT_EQ(info.levels[2].ways, 8);
EXPECT_EQ(info.levels[2].line_size, 64);
EXPECT_EQ(info.levels[2].tlb_entries, 1024);
EXPECT_EQ(info.levels[2].partitioning, 1);
EXPECT_EQ(info.levels[3].level, 3);
EXPECT_EQ(info.levels[3].cache_type, 3);
EXPECT_EQ(info.levels[3].cache_size, 8 * MiB);
EXPECT_EQ(info.levels[3].ways, 16);
EXPECT_EQ(info.levels[3].line_size, 64);
EXPECT_EQ(info.levels[3].tlb_entries, 8192);
EXPECT_EQ(info.levels[3].partitioning, 1);
}
// http://users.atw.hu/instlatx64/AuthenticAMD/AuthenticAMD0A20F10_K19_Vermeer2_CPUID.txt
TEST_F(CpuidX86Test, AMD_K19_ZEN3_VERMEER) {
g_fake_cpu->SetLeaves({