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fastfetch/src/detection/cpu/cpu_linux.c
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#include "cpu.h"
#include "common/io/io.h"
#include "common/processing.h"
#include "common/properties.h"
#include "util/mallocHelper.h"
#include "util/stringUtils.h"
#include <sys/sysinfo.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <fcntl.h>
#define FF_CPUINFO_PATH "/proc/cpuinfo"
static double parseTZDir(int dfd, FFstrbuf* buffer)
{
if (!ffReadFileBufferRelative(dfd, "type", buffer))
return FF_CPU_TEMP_UNSET;
if (!ffStrbufStartsWithS(buffer, "cpu") &&
!ffStrbufStartsWithS(buffer, "soc") &&
#if __x86_64__ || __i386__
!ffStrbufEqualS(buffer, "x86_pkg_temp") &&
#endif
true
) return FF_CPU_TEMP_UNSET;
if (!ffReadFileBufferRelative(dfd, "temp", buffer))
return FF_CPU_TEMP_UNSET;
double value = ffStrbufToDouble(buffer, FF_CPU_TEMP_UNSET);// millidegree Celsius
if (value == FF_CPU_TEMP_UNSET)
return FF_CPU_TEMP_UNSET;
return value / 1000.;
}
static double parseHwmonDir(int dfd, FFstrbuf* buffer)
{
if (!ffReadFileBufferRelative(dfd, "name", buffer))
return FF_CPU_TEMP_UNSET;
ffStrbufTrimRightSpace(buffer);
if (
!ffStrbufContainS(buffer, "cpu") &&
#if __x86_64__ || __i386__
!ffStrbufEqualS(buffer, "k10temp") && // AMD
!ffStrbufEqualS(buffer, "fam15h_power") && // AMD
!ffStrbufEqualS(buffer, "coretemp") && // Intel
#endif
true
) return FF_CPU_TEMP_UNSET;
//https://www.kernel.org/doc/Documentation/hwmon/sysfs-interface
if (!ffReadFileBufferRelative(dfd, "temp1_input", buffer))
return FF_CPU_TEMP_UNSET;
double value = ffStrbufToDouble(buffer, FF_CPU_TEMP_UNSET);// millidegree Celsius
if (value == FF_CPU_TEMP_UNSET)
return FF_CPU_TEMP_UNSET;
return value / 1000.;
}
static double detectCPUTemp(void)
{
FF_STRBUF_AUTO_DESTROY buffer = ffStrbufCreate();
{
FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/sys/class/hwmon/");
if(dirp)
{
int dfd = dirfd(dirp);
struct dirent* entry;
while((entry = readdir(dirp)) != NULL)
{
if(entry->d_name[0] == '.')
continue;
FF_AUTO_CLOSE_FD int subfd = openat(dfd, entry->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
if(subfd < 0)
continue;
double result = parseHwmonDir(subfd, &buffer);
if (result != FF_CPU_TEMP_UNSET)
return result;
}
}
}
{
FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/sys/class/thermal/");
if(dirp)
{
int dfd = dirfd(dirp);
struct dirent* entry;
while((entry = readdir(dirp)) != NULL)
{
if(entry->d_name[0] == '.')
continue;
if(!ffStrStartsWith(entry->d_name, "thermal_zone"))
continue;
FF_AUTO_CLOSE_FD int subfd = openat(dfd, entry->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
if(subfd < 0)
continue;
double result = parseTZDir(subfd, &buffer);
if (result != FF_CPU_TEMP_UNSET)
return result;
}
}
}
{
FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/sys/devices/platform/");
if(dirp)
{
int dfd = dirfd(dirp);
struct dirent* entry;
while((entry = readdir(dirp)) != NULL)
{
if(entry->d_name[0] == '.')
continue;
if(!ffStrStartsWith(entry->d_name, "cputemp."))
continue;
FF_AUTO_CLOSE_FD int subfd = openat(dfd, entry->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
if(subfd < 0)
continue;
double result = parseHwmonDir(subfd, &buffer);
if (result != FF_CPU_TEMP_UNSET)
return result;
}
}
}
return FF_CPU_TEMP_UNSET;
}
#ifdef __ANDROID__
#include "common/settings.h"
static void detectQualcomm(FFCPUResult* cpu)
{
// https://en.wikipedia.org/wiki/List_of_Qualcomm_Snapdragon_systems_on_chips
assert(cpu->name.length >= 2);
uint32_t code = (uint32_t) strtoul(cpu->name.chars + 2, NULL, 10);
const char* name = NULL;
switch (code)
{
case 8845: name = "8 Gen 5"; break; // ?
case 8850: name = "8 Elite Gen 5"; break;
case 8735: name = "8s Gen 4"; break;
case 8750: name = "8 Elite"; break;
case 8635: name = "8s Gen 3"; break;
case 8650: name = "8 Gen 3"; break;
case 8550: name = "8 Gen 2"; break;
case 8475: name = "8+ Gen 1"; break;
case 8450: name = "8 Gen 1"; break;
case 7750: name = "7 Gen 4"; break;
case 7675: name = "7+ Gen 3"; break;
case 7635: name = "7s Gen 3"; break;
case 7550: name = "7 Gen 3"; break;
case 7475: name = "7+ Gen 2"; break;
case 7435: name = "7s Gen 2"; break;
case 7450: name = "7 Gen 1"; break;
case 6650: name = "6 Gen 4"; break;
case 6375: name = "6s Gen 3"; break;
case 6475: name = "6 Gen 3"; break;
case 6115: name = "6s Gen 1"; break;
case 6450: name = "6 Gen 1"; break;
case 4635: name = "4s Gen 2"; break;
case 4450: name = "4 Gen 2"; break;
case 4375: name = "4 Gen 1"; break;
}
if (name)
{
char str[32];
ffStrCopy(str, cpu->name.chars, sizeof(str));
ffStrbufSetF(&cpu->name, "Qualcomm Snapdragon %s [%s]", name, str);
return;
}
}
static void detectMediaTek(FFCPUResult* cpu)
{
// https://en.wikipedia.org/wiki/List_of_MediaTek_systems_on_chips
assert(cpu->name.length >= 2);
uint32_t code = (uint32_t) strtoul(cpu->name.chars + 2, NULL, 10);
const char* name = NULL;
switch (code) // The SOC code of MTK Dimensity series is full of mess
{
case 6993: name = "9500"; break;
case 6991: name = "9400"; break;
case 6989:
case 8796: name = "9300"; break;
case 6985: name = "9200"; break;
case 6983:
case 8798: name = "9000"; break;
case 6899: name = "8400"; break;
case 6897:
case 8792: name = "8300"; break;
case 6896: name = "8200"; break;
case 8795: name = "8100"; break;
case 6895: name = "8000"; break;
}
if (name)
{
char str[32];
ffStrCopy(str, cpu->name.chars, sizeof(str));
ffStrbufSetF(&cpu->name, "MediaTek Dimensity %s [%s]", name, str);
return;
}
}
static void detectExynos(FFCPUResult* cpu)
{
// https://en.wikipedia.org/wiki/Exynos
assert(cpu->name.length > 3);
uint32_t code = (uint32_t) strtoul(cpu->name.chars + 3, NULL, 10);
const char* name = NULL;
switch (code)
{
case 9955: name = "2500"; break;
case 9945: name = "2400"; break;
// No 2300
case 9925: name = "2200"; break;
case 9840: name = "2100"; break;
case 8855: name = "1580"; break;
case 8845: name = "1480"; break;
case 8835: name = "1380"; break;
case 8535: name = "1330"; break;
case 8825: name = "1280"; break;
case 9815: name = "1080"; break;
case 9830: name = "990"; break;
case 9630: name = "980"; break;
case 8805: name = "880"; break;
case 3830: name = "850"; break;
}
if (name)
{
char str[32];
ffStrCopy(str, cpu->name.chars, sizeof(str));
ffStrbufSetF(&cpu->name, "Samsung Exynos %s [%s]", name, str);
return;
}
}
static void detectAndroid(FFCPUResult* cpu)
{
if (cpu->name.length == 0)
{
if (ffSettingsGetAndroidProperty("ro.soc.model", &cpu->name))
ffStrbufClear(&cpu->vendor); // We usually detect the vendor of CPU core as ARM, but instead we want the vendor of SOC
}
if (cpu->vendor.length == 0)
{
if (!ffSettingsGetAndroidProperty("ro.soc.manufacturer", &cpu->vendor))
if (!ffSettingsGetAndroidProperty("ro.product.product.manufacturer", &cpu->vendor))
if (!ffSettingsGetAndroidProperty("ro.product.vendor.manufacturer", &cpu->vendor))
if(ffSettingsGetAndroidProperty("ro.mediatek.platform", &cpu->name))
ffStrbufSetStatic(&cpu->vendor, "MediaTek");
}
if (ffStrbufEqualS(&cpu->vendor, "QTI"))
ffStrbufSetStatic(&cpu->vendor, "Qualcomm");
else if (ffStrbufIgnCaseEqualS(&cpu->vendor, "MediaTek")) // sometimes "Mediatek"
ffStrbufSetStatic(&cpu->vendor, "MediaTek");
else if (cpu->vendor.length > 0)
cpu->vendor.chars[0] = (char) toupper(cpu->vendor.chars[0]);
if (ffStrbufEqualS(&cpu->vendor, "Qualcomm") && ffStrbufStartsWithS(&cpu->name, "SM"))
detectQualcomm(cpu);
else if (ffStrbufEqualS(&cpu->vendor, "MediaTek") && ffStrbufStartsWithS(&cpu->name, "MT"))
detectMediaTek(cpu);
else if (ffStrbufEqualS(&cpu->vendor, "Samsung") && ffStrbufStartsWithS(&cpu->name, "s5e"))
{
cpu->name.chars[0] = 'S';
cpu->name.chars[2] = 'E';
detectExynos(cpu);
}
}
#endif
#if __arm__ || __aarch64__
#include "cpu_arm.h"
static void detectArmName(FFstrbuf* cpuinfo, FFCPUResult* cpu, uint32_t implId)
{
char* line = NULL;
size_t len = 0;
uint32_t lastPartId = UINT32_MAX;
uint32_t num = 0;
while(ffStrbufGetline(&line, &len, cpuinfo))
{
if (!ffStrStartsWith(line, "CPU part\t: ")) continue;
uint32_t partId = (uint32_t) strtoul(line + strlen("CPU part\t: "), NULL, 16);
const char* name = NULL;
switch (implId)
{
case 0x41: name = armPartId2name(partId); break;
case 0x42: name = brcmPartId2name(partId); break;
case 0x43: name = caviumPartId2name(partId); break;
case 0x44: name = decPartId2name(partId); break;
case 0x46: name = fujitsuPartId2name(partId); break;
case 0x48: name = hisiPartId2name(partId); break;
case 0x4e: name = nvidiaPartId2name(partId); break;
case 0x50: name = apmPartId2name(partId); break;
case 0x51: name = qcomPartId2name(partId); break;
case 0x53: name = samsungPartId2name(partId); break;
case 0x56: name = marvellPartId2name(partId); break;
case 0x61:
if (partId == 0)
{
// https://github.com/Dr-Noob/cpufetch/issues/213#issuecomment-1927782105
ffStrbufSetStatic(&cpu->name, "Virtualized Apple Silicon");
ffStrbufGetlineRestore(&line, &len, cpuinfo);
return;
}
name = applePartId2name(partId);
break;
case 0x66: name = faradayPartId2name(partId); break;
case 0x69: name = intelPartId2name(partId); break;
case 0x6d: name = msPartId2name(partId); break;
case 0x70: name = ftPartId2name(partId); break;
case 0xc0: name = amperePartId2name(partId); break;
}
if (lastPartId != partId)
{
if (lastPartId != UINT32_MAX)
{
if (num > 1)
ffStrbufAppendF(&cpu->name, "*%u", num);
ffStrbufAppendS(&cpu->name, " + ");
}
if (name)
ffStrbufAppendS(&cpu->name, name);
else if (partId)
ffStrbufAppendF(&cpu->name, "%s-%X", cpu->vendor.chars, partId);
else
ffStrbufAppend(&cpu->name, &cpu->vendor);
lastPartId = partId;
num = 1;
}
else
++num;
}
if (num > 1)
ffStrbufAppendF(&cpu->name, "*%u", num);
}
#endif
static const char* parseCpuInfo(
FFstrbuf* cpuinfo,
FFCPUResult* cpu,
FF_MAYBE_UNUSED FFstrbuf* physicalCoresBuffer,
FF_MAYBE_UNUSED FFstrbuf* cpuMHz,
FF_MAYBE_UNUSED FFstrbuf* cpuIsa,
FF_MAYBE_UNUSED FFstrbuf* cpuUarch,
FF_MAYBE_UNUSED FFstrbuf* cpuImplementer)
{
char* line = NULL;
size_t len = 0;
while(ffStrbufGetline(&line, &len, cpuinfo))
{
//Stop after reasonable information is acquired
if((*line == '\0' || *line == '\n') && cpu->name.length > 0)
{
ffStrbufGetlineRestore(&line, &len, cpuinfo);
break;
}
(void)(
// arm64 doesn't have "model name"; arm32 does have "model name" but its value is not useful.
// "Hardware" should always be used in this case
#if __x86_64__ || __i386__
(cpu->name.length == 0 && ffParsePropLine(line, "model name :", &cpu->name)) ||
(cpu->vendor.length == 0 && ffParsePropLine(line, "vendor_id :", &cpu->vendor)) ||
(physicalCoresBuffer->length == 0 && ffParsePropLine(line, "cpu cores :", physicalCoresBuffer)) ||
(cpuMHz->length == 0 && ffParsePropLine(line, "cpu MHz :", cpuMHz)) ||
#elif __arm__ || __aarch64__
(cpuImplementer->length == 0 && ffParsePropLine(line, "CPU implementer :", cpuImplementer)) ||
(cpu->name.length == 0 && ffParsePropLine(line, "Hardware :", &cpu->name)) || //For Android devices
#elif __powerpc__ || __powerpc
(cpuMHz->length == 0 && ffParsePropLine(line, "clock :", cpuMHz)) ||
(cpu->name.length == 0 && ffParsePropLine(line, "cpu :", &cpu->name)) ||
#elif __mips__ || __mips
(cpu->name.length == 0 && ffParsePropLine(line, "cpu model :", &cpu->name)) ||
#elif __loongarch__
(cpu->name.length == 0 && ffParsePropLine(line, "Model Name :", &cpu->name)) ||
(cpuMHz->length == 0 && ffParsePropLine(line, "CPU MHz :", cpuMHz)) ||
#elif __riscv__ || __riscv
(cpuIsa->length == 0 && ffParsePropLine(line, "isa :", cpuIsa)) ||
(cpuUarch->length == 0 && ffParsePropLine(line, "uarch :", cpuUarch)) ||
#elif __s390x__
(cpu->name.length == 0 && ffParsePropLine(line, "processor 0:", &cpu->name)) ||
(cpu->vendor.length == 0 && ffParsePropLine(line, "vendor_id :", &cpu->vendor)) ||
(cpuMHz->length == 0 && ffParsePropLine(line, "cpu MHz static :", cpuMHz)) || // This one cannot be detected because of early return
#elif __ia64__
(cpu->name.length == 0 && ffParsePropLine(line, "model name :", &cpu->name)) ||
(cpu->vendor.length == 0 && ffParsePropLine(line, "vendor :", &cpu->vendor)) ||
(cpuMHz->length == 0 && ffParsePropLine(line, "cpu MHz :", cpuMHz)) ||
#elif __hppa__
(cpu->name.length == 0 && ffParsePropLine(line, "cpu :", &cpu->name)) ||
#elif __sh__
(cpu->name.length == 0 && ffParsePropLine(line, "cpu type :", &cpu->name)) ||
#else
(cpu->name.length == 0 && ffParsePropLine(line, "model name :", &cpu->name)) ||
(cpu->name.length == 0 && ffParsePropLine(line, "model :", &cpu->name)) ||
(cpu->name.length == 0 && ffParsePropLine(line, "cpu model :", &cpu->name)) ||
(cpu->name.length == 0 && ffParsePropLine(line, "hardware :", &cpu->name)) ||
(cpu->name.length == 0 && ffParsePropLine(line, "processor :", &cpu->name)) ||
#endif
false
);
}
return NULL;
}
static uint32_t getFrequency(FFstrbuf* basePath, const char* cpuinfoFileName, const char* scalingFileName, FFstrbuf* buffer)
{
uint32_t baseLen = basePath->length;
ffStrbufAppendS(basePath, cpuinfoFileName);
bool ok = ffReadFileBuffer(basePath->chars, buffer);
ffStrbufSubstrBefore(basePath, baseLen);
if (ok)
return (uint32_t) (ffStrbufToUInt(buffer, 0) / 1000);
if (scalingFileName)
{
ffStrbufAppendS(basePath, scalingFileName);
ok = ffReadFileBuffer(basePath->chars, buffer);
ffStrbufSubstrBefore(basePath, baseLen);
if (ok)
return (uint32_t) (ffStrbufToUInt(buffer, 0) / 1000);
}
return 0;
}
static uint8_t getNumCores(FFstrbuf* basePath, FFstrbuf* buffer)
{
uint32_t baseLen = basePath->length;
ffStrbufAppendS(basePath, "/affected_cpus");
bool ok = ffReadFileBuffer(basePath->chars, buffer);
ffStrbufSubstrBefore(basePath, baseLen);
if (ok)
return (uint8_t) (ffStrbufCountC(buffer, ' ') + 1);
ffStrbufAppendS(basePath, "/related_cpus");
ok = ffReadFileBuffer(basePath->chars, buffer);
ffStrbufSubstrBefore(basePath, baseLen);
if (ok)
return (uint8_t) (ffStrbufCountC(buffer, ' ') + 1);
return 0;
}
static bool detectFrequency(FFCPUResult* cpu, const FFCPUOptions* options)
{
FF_STRBUF_AUTO_DESTROY path = ffStrbufCreateS("/sys/devices/system/cpu/cpufreq/");
FF_AUTO_CLOSE_DIR DIR* dir = opendir(path.chars);
if (!dir) return false;
FF_STRBUF_AUTO_DESTROY buffer = ffStrbufCreate();
uint32_t baseLen = path.length;
struct dirent* entry;
while ((entry = readdir(dir)) != NULL)
{
if (ffStrStartsWith(entry->d_name, "policy") && ffCharIsDigit(entry->d_name[strlen("policy")]))
{
ffStrbufAppendS(&path, entry->d_name);
uint32_t fmax = getFrequency(&path, "/cpuinfo_max_freq", "/scaling_max_freq", &buffer);
if (fmax == 0) continue;
if (cpu->frequencyMax >= fmax)
{
if (!options->showPeCoreCount)
{
ffStrbufSubstrBefore(&path, baseLen);
continue;
}
}
else
cpu->frequencyMax = fmax;
uint32_t fbase = getFrequency(&path, "/base_frequency", NULL, &buffer);
if (fbase > 0)
cpu->frequencyBase = cpu->frequencyBase > fbase ? cpu->frequencyBase : fbase;
if (options->showPeCoreCount)
{
uint32_t freq = fbase == 0 ? fmax : fbase; // seems base frequencies are more stable
uint32_t ifreq = 0;
while (cpu->coreTypes[ifreq].freq != freq && cpu->coreTypes[ifreq].freq > 0)
++ifreq;
if (cpu->coreTypes[ifreq].freq == 0)
cpu->coreTypes[ifreq].freq = freq;
cpu->coreTypes[ifreq].count += getNumCores(&path, &buffer);
}
ffStrbufSubstrBefore(&path, baseLen);
}
}
return true;
}
#if __i386__ || __x86_64__
FF_MAYBE_UNUSED static uint16_t getPackageCount(FFstrbuf* cpuinfo)
{
const char* p = cpuinfo->chars;
uint64_t low = 0, high = 0;
while ((p = memmem(p, cpuinfo->length - (uint32_t) (p - cpuinfo->chars), "\nphysical id\t:", strlen("\nphysical id\t:"))))
{
p += strlen("\nphysical id\t:");
char* pend;
unsigned long long id = strtoul(p, &pend, 10);
if (__builtin_expect(id > 64, false)) // Do 129-socket boards exist?
high |= 1ULL << (id - 64);
else
low |= 1ULL << id;
p = pend;
}
return (uint16_t) (__builtin_popcountll(low) + __builtin_popcountll(high));
}
FF_MAYBE_UNUSED static const char* detectCPUX86(const FFCPUOptions* options, FFCPUResult* cpu)
{
FF_STRBUF_AUTO_DESTROY cpuinfo = ffStrbufCreateA(PROC_FILE_BUFFSIZ);
if (!ffReadFileBuffer(FF_CPUINFO_PATH, &cpuinfo) || cpuinfo.length == 0)
return "ffReadFileBuffer(\"" FF_CPUINFO_PATH "\") failed";
FF_STRBUF_AUTO_DESTROY physicalCoresBuffer = ffStrbufCreate();
FF_STRBUF_AUTO_DESTROY cpuMHz = ffStrbufCreate();
const char* error = parseCpuInfo(&cpuinfo, cpu, &physicalCoresBuffer, &cpuMHz, NULL,NULL, NULL);
if (error) return error;
cpu->coresLogical = (uint16_t) get_nprocs_conf();
cpu->coresOnline = (uint16_t) get_nprocs();
cpu->packages = getPackageCount(&cpuinfo);
cpu->coresPhysical = (uint16_t) ffStrbufToUInt(&physicalCoresBuffer, 0); // physical cores in single package
if (cpu->coresPhysical > 0 && cpu->packages > 1)
cpu->coresPhysical *= cpu->packages;
// Ref https://github.com/fastfetch-cli/fastfetch/issues/1194#issuecomment-2295058252
ffCPUDetectByCpuid(cpu);
if (!detectFrequency(cpu, options) || cpu->frequencyBase == 0)
cpu->frequencyBase = (uint32_t) ffStrbufToUInt(&cpuMHz, 0);
return NULL;
}
#else
static const char* detectPhysicalCores(FFCPUResult* cpu)
{
int dfd = open("/sys/devices/system/cpu/", O_RDONLY | O_DIRECTORY | O_CLOEXEC);
if (dfd < 0) return "open(\"/sys/devices/system/cpu/\") failed";
FF_AUTO_CLOSE_DIR DIR* dir = fdopendir(dfd);
if (!dir) return "fdopendir(dfd) failed";
uint64_t pkgLow = 0, pkgHigh = 0;
struct dirent* entry;
FF_LIST_AUTO_DESTROY cpuList = ffListCreate(sizeof(uint32_t));
while ((entry = readdir(dir)) != NULL)
{
if (entry->d_type != DT_DIR || !ffStrStartsWith(entry->d_name, "cpu") || !ffCharIsDigit(entry->d_name[strlen("cpu")]))
continue;
FF_AUTO_CLOSE_FD int cpuxfd = openat(dirfd(dir), entry->d_name, O_RDONLY | O_DIRECTORY);
if (cpuxfd < 0)
continue;
char buf[128];
// Check if the directory contains a file named "topology/physical_package_id"
// that lists the physical package id of the CPU.
ssize_t len = ffReadFileDataRelative(cpuxfd, "topology/physical_package_id", sizeof(buf) - 1, buf);
if (len > 0)
{
buf[len] = '\0';
unsigned long long id = strtoul(buf, NULL, 10);
if (__builtin_expect(id > 64, false)) // Do 129-socket boards exist?
pkgHigh |= 1ULL << (id - 64);
else
pkgLow |= 1ULL << id;
}
// Check if the directory contains a file named "topology/core_cpus_list"
// that lists the physical cores in the package.
len = ffReadFileDataRelative(cpuxfd, "topology/core_cpus_list", sizeof(buf) - 1, buf);
if (len > 0)
{
buf[len] = '\0'; // low-high or low
for (const char* p = buf; *p;)
{
char* pend;
uint32_t coreId = (uint32_t) strtoul(p, &pend, 10);
if (pend == p) break;
bool found = false;
FF_LIST_FOR_EACH(uint32_t, id, cpuList)
{
if (*id == coreId)
{
// This core is already counted
found = true;
break;
}
}
if (!found)
*(uint32_t*) ffListAdd(&cpuList) = coreId;
p = strchr(pend, ',');
if (!p) break;
++p;
}
}
}
cpu->coresPhysical = (uint16_t) cpuList.length;
cpu->packages = (uint16_t) (__builtin_popcountll(pkgLow) + __builtin_popcountll(pkgHigh));
return NULL;
}
FF_MAYBE_UNUSED static void parseIsa(FFstrbuf* cpuIsa)
{
// Always use the last part of the ISA string. Ref: #590 #1204
ffStrbufSubstrAfterLastC(cpuIsa, ' ');
if(ffStrbufStartsWithS(cpuIsa, "rv"))
{
// RISC-V ISA string example: "rv64imafdch_zicsr_zifencei".
// The _z parts are not important for CPU showcasing, so we remove them.
if(ffStrbufContainC(cpuIsa, '_'))
ffStrbufSubstrBeforeFirstC(cpuIsa, '_');
// Then we replace "imafd" with "g" since "g" is a shorthand.
if(ffStrbufContainS(cpuIsa, "imafd"))
{
// Remove 4 of the 5 characters and replace the remaining one with "g".
ffStrbufRemoveSubstr(cpuIsa, 4, 8);
cpuIsa->chars[4] = 'g';
}
// The final ISA output of the above example is "rv64gch".
}
}
FF_MAYBE_UNUSED static void detectSocName(FFCPUResult* cpu)
{
if (cpu->name.length > 0)
return;
// [x-vendor,x-model\0]*N
char content[512];
ssize_t length = ffReadFileData("/proc/device-tree/compatible", ARRAY_SIZE(content), content);
if (length < 4) return; // v,m\0
if (content[length - 1] != '\0') return; // must end with \0
--length;
char* vendor = NULL;
char* model = NULL;
for (char* p; length > 0; length = p ? (ssize_t) (p - content) - 1 : 0)
{
p = memrchr(content, '\0', (size_t) length);
vendor = p /* first entry */ ? p + 1 : content;
size_t partLen = (size_t) (length - (vendor - content));
if (partLen < 3) continue;
char* comma = memchr(vendor, ',', partLen);
if (!comma) continue;
size_t vendorLen = (size_t) (comma - vendor);
if (vendorLen == 0) continue;
model = comma + 1;
size_t modelLen = (size_t) (partLen - (size_t) (model - vendor));
if (modelLen == 0) continue;
if ((modelLen >= strlen("-platform") && ffStrEndsWith(model, "-platform")) ||
(modelLen >= strlen("-soc") && ffStrEndsWith(model, "-soc")))
continue;
*comma = '\0';
break;
}
if (!length) return;
if (false) {}
#if __aarch64__
else if (ffStrEquals(vendor, "apple"))
{
// https://elixir.bootlin.com/linux/v6.11/source/arch/arm64/boot/dts/apple
if (model[0] == 't')
{
uint32_t deviceId = (uint32_t) strtoul(model + 1, NULL, 10);
ffStrbufSetStatic(&cpu->name, ffCPUAppleCodeToName(deviceId));
if (!cpu->name.length)
{
ffStrbufSetS(&cpu->name, "Apple Silicon ");
ffStrbufAppendS(&cpu->name, model);
}
}
else
ffStrbufSetS(&cpu->name, model);
ffStrbufSetStatic(&cpu->vendor, "Apple");
}
#endif
else if (ffStrEquals(vendor, "qcom"))
{
// https://elixir.bootlin.com/linux/v6.11/source/arch/arm64/boot/dts/qcom
if (ffStrStartsWith(model, "x"))
{
ffStrbufSetS(&cpu->name, "Qualcomm Snapdragon X Elite ");
for (const char* p = model + 1; *p; ++p)
ffStrbufAppendC(&cpu->name, (char) toupper(*p));
}
else if (ffStrStartsWith(model, "sc"))
{
const char* code = model + 2;
uint32_t deviceId = (uint32_t) strtoul(code, NULL, 10);
ffStrbufSetStatic(&cpu->name, ffCPUQualcommCodeToName(deviceId));
if (!cpu->name.length)
{
ffStrbufAppendS(&cpu->name, "Qualcomm Snapdragon SC");
ffStrbufAppendS(&cpu->name, code);
}
}
else
ffStrbufSetS(&cpu->name, model);
ffStrbufSetStatic(&cpu->vendor, "Qualcomm");
}
else if (ffStrEquals(vendor, "brcm"))
{
// Raspberry Pi
ffStrbufSetStatic(&cpu->vendor, "Broadcom");
for (const char* p = model; *p; ++p)
ffStrbufAppendC(&cpu->name, (char) toupper(*p));
}
else if (ffStrEquals(vendor, "thead"))
{
// Lichee Pi?
ffStrbufSetStatic(&cpu->vendor, "T-Head");
for (const char* p = model; *p; ++p)
ffStrbufAppendC(&cpu->name, (char) toupper(*p));
}
else
{
ffStrbufSetS(&cpu->name, model);
ffStrbufSetS(&cpu->vendor, vendor);
cpu->vendor.chars[0] = (char) toupper(vendor[0]);
}
}
#ifdef __loongarch__
FF_MAYBE_UNUSED static uint16_t getLoongarchPropCount(FFstrbuf* cpuinfo, const char* key)
{
const char* p = cpuinfo->chars;
uint64_t low = 0, high = 0;
uint32_t keylen = (uint32_t) strlen(key);
while ((p = memmem(p, cpuinfo->length - (uint32_t) (p - cpuinfo->chars), key, keylen)))
{
p += keylen;
char* pend;
unsigned long id = strtoul(p, &pend, 10);
if (__builtin_expect(id > 64, false))
high |= 1 << (id - 64);
else
low |= 1 << id;
p = pend;
}
return (uint16_t) (__builtin_popcountll(low) + __builtin_popcountll(high));
}
#endif
FF_MAYBE_UNUSED static const char* detectCPUOthers(const FFCPUOptions* options, FFCPUResult* cpu)
{
cpu->coresLogical = (uint16_t) get_nprocs_conf();
cpu->coresOnline = (uint16_t) get_nprocs();
#if __ANDROID__
detectAndroid(cpu);
#elif !__powerpc__ && !__powerpc
detectSocName(cpu);
#endif
detectFrequency(cpu, options);
if (cpu->name.length == 0)
{
FF_STRBUF_AUTO_DESTROY cpuinfo = ffStrbufCreateA(PROC_FILE_BUFFSIZ);
if (!ffReadFileBuffer(FF_CPUINFO_PATH, &cpuinfo) || cpuinfo.length == 0)
return "ffReadFileBuffer(\"" FF_CPUINFO_PATH "\") failed";
FF_STRBUF_AUTO_DESTROY cpuMHz = ffStrbufCreate();
FF_STRBUF_AUTO_DESTROY cpuIsa = ffStrbufCreate();
FF_STRBUF_AUTO_DESTROY cpuUarch = ffStrbufCreate();
FF_STRBUF_AUTO_DESTROY cpuImplementerStr = ffStrbufCreate();
const char* error = parseCpuInfo(&cpuinfo, cpu, NULL, &cpuMHz, &cpuIsa, &cpuUarch, &cpuImplementerStr);
if (error) return error;
if (cpu->frequencyBase == 0)
cpu->frequencyBase = (uint32_t) ffStrbufToUInt(&cpuMHz, 0);
#if __arm__ || __aarch64__
uint32_t cpuImplementer = (uint32_t) strtoul(cpuImplementerStr.chars, NULL, 16);
ffStrbufSetStatic(&cpu->vendor, hwImplId2Vendor(cpuImplementer));
if (cpu->name.length == 0)
detectArmName(&cpuinfo, cpu, cpuImplementer);
#elif __riscv__ || __riscv
if (cpu->name.length == 0)
{
if(cpuUarch.length > 0)
{
if(cpu->name.length > 0)
ffStrbufAppendC(&cpu->name, ' ');
ffStrbufAppend(&cpu->name, &cpuUarch);
}
if(cpuIsa.length > 0)
{
parseIsa(&cpuIsa);
if(cpu->name.length > 0)
ffStrbufAppendC(&cpu->name, ' ');
ffStrbufAppend(&cpu->name, &cpuIsa);
}
}
#elif __loongarch__
cpu->packages = getLoongarchPropCount(&cpuinfo, "\npackage\t\t\t:");
cpu->coresPhysical = getLoongarchPropCount(&cpuinfo, "\ncore\t\t\t:");
if (cpu->packages > 1) cpu->coresPhysical *= cpu->packages;
#elif __s390x__
if (ffStrbufSubstrAfterFirstS(&cpu->name, "machine = "))
ffStrbufPrependS(&cpu->name, "Machine ");
#endif
}
if (cpu->coresPhysical == 0)
detectPhysicalCores(cpu);
ffCPUDetectByCpuid(cpu);
return NULL;
}
#endif
const char* ffDetectCPUImpl(const FFCPUOptions* options, FFCPUResult* cpu)
{
cpu->temperature = options->temp ? detectCPUTemp() : FF_CPU_TEMP_UNSET;
#if __x86_64__ || __i386__
return detectCPUX86(options, cpu);
#else
return detectCPUOthers(options, cpu);
#endif
}
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