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// Copyright 2018 IBM.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cpuinfo_ppc.h"
#include <assert.h>
#include <stdbool.h>
#include <string.h>
#include "internal/bit_utils.h"
#include "internal/filesystem.h"
#include "internal/stack_line_reader.h"
#include "internal/string_view.h"
// Generation of feature's getters/setters functions and kGetters, kSetters,
// kCpuInfoFlags and kHardwareCapabilities global tables.
#define DEFINE_TABLE_FEATURES \
FEATURE(PPC_32, ppc32, "ppc32", PPC_FEATURE_32, 0) \
FEATURE(PPC_64, ppc64, "ppc64", PPC_FEATURE_64, 0) \
FEATURE(PPC_601_INSTR, ppc601, "ppc601", PPC_FEATURE_601_INSTR, 0) \
FEATURE(PPC_HAS_ALTIVEC, altivec, "altivec", PPC_FEATURE_HAS_ALTIVEC, 0) \
FEATURE(PPC_HAS_FPU, fpu, "fpu", PPC_FEATURE_HAS_FPU, 0) \
FEATURE(PPC_HAS_MMU, mmu, "mmu", PPC_FEATURE_HAS_MMU, 0) \
FEATURE(PPC_HAS_4xxMAC, mac_4xx, "4xxmac", PPC_FEATURE_HAS_4xxMAC, 0) \
FEATURE(PPC_UNIFIED_CACHE, unifiedcache, "ucache", \
PPC_FEATURE_UNIFIED_CACHE, 0) \
FEATURE(PPC_HAS_SPE, spe, "spe", PPC_FEATURE_HAS_SPE, 0) \
FEATURE(PPC_HAS_EFP_SINGLE, efpsingle, "efpsingle", \
PPC_FEATURE_HAS_EFP_SINGLE, 0) \
FEATURE(PPC_HAS_EFP_DOUBLE, efpdouble, "efpdouble", \
PPC_FEATURE_HAS_EFP_DOUBLE, 0) \
FEATURE(PPC_NO_TB, no_tb, "notb", PPC_FEATURE_NO_TB, 0) \
FEATURE(PPC_POWER4, power4, "power4", PPC_FEATURE_POWER4, 0) \
FEATURE(PPC_POWER5, power5, "power5", PPC_FEATURE_POWER5, 0) \
FEATURE(PPC_POWER5_PLUS, power5plus, "power5+", PPC_FEATURE_POWER5_PLUS, 0) \
FEATURE(PPC_CELL, cell, "cellbe", PPC_FEATURE_CELL, 0) \
FEATURE(PPC_BOOKE, booke, "booke", PPC_FEATURE_BOOKE, 0) \
FEATURE(PPC_SMT, smt, "smt", PPC_FEATURE_SMT, 0) \
FEATURE(PPC_ICACHE_SNOOP, icachesnoop, "ic_snoop", PPC_FEATURE_ICACHE_SNOOP, \
0) \
FEATURE(PPC_ARCH_2_05, arch205, "arch_2_05", PPC_FEATURE_ARCH_2_05, 0) \
FEATURE(PPC_PA6T, pa6t, "pa6t", PPC_FEATURE_PA6T, 0) \
FEATURE(PPC_HAS_DFP, dfp, "dfp", PPC_FEATURE_HAS_DFP, 0) \
FEATURE(PPC_POWER6_EXT, power6ext, "power6x", PPC_FEATURE_POWER6_EXT, 0) \
FEATURE(PPC_ARCH_2_06, arch206, "arch_2_06", PPC_FEATURE_ARCH_2_06, 0) \
FEATURE(PPC_HAS_VSX, vsx, "vsx", PPC_FEATURE_HAS_VSX, 0) \
FEATURE(PPC_PSERIES_PERFMON_COMPAT, pseries_perfmon_compat, "archpmu", \
PPC_FEATURE_PSERIES_PERFMON_COMPAT, 0) \
FEATURE(PPC_TRUE_LE, truele, "true_le", PPC_FEATURE_TRUE_LE, 0) \
FEATURE(PPC_PPC_LE, ppcle, "ppcle", PPC_FEATURE_PPC_LE, 0) \
FEATURE(PPC_ARCH_2_07, arch207, "arch_2_07", 0, PPC_FEATURE2_ARCH_2_07) \
FEATURE(PPC_HTM, htm, "htm", 0, PPC_FEATURE2_HTM) \
FEATURE(PPC_DSCR, dscr, "dscr", 0, PPC_FEATURE2_DSCR) \
FEATURE(PPC_EBB, ebb, "ebb", 0, PPC_FEATURE2_EBB) \
FEATURE(PPC_ISEL, isel, "isel", 0, PPC_FEATURE2_ISEL) \
FEATURE(PPC_TAR, tar, "tar", 0, PPC_FEATURE2_TAR) \
FEATURE(PPC_VEC_CRYPTO, vcrypto, "vcrypto", 0, PPC_FEATURE2_VEC_CRYPTO) \
FEATURE(PPC_HTM_NOSC, htm_nosc, "htm-nosc", 0, PPC_FEATURE2_HTM_NOSC) \
FEATURE(PPC_ARCH_3_00, arch300, "arch_3_00", 0, PPC_FEATURE2_ARCH_3_00) \
FEATURE(PPC_HAS_IEEE128, ieee128, "ieee128", 0, PPC_FEATURE2_HAS_IEEE128) \
FEATURE(PPC_DARN, darn, "darn", 0, PPC_FEATURE2_DARN) \
FEATURE(PPC_SCV, scv, "scv", 0, PPC_FEATURE2_SCV) \
FEATURE(PPC_HTM_NO_SUSPEND, htm_no_suspend, "htm-no-suspend", 0, \
PPC_FEATURE2_HTM_NO_SUSPEND)
#define DEFINE_TABLE_FEATURE_TYPE PPCFeatures
#include "define_tables.h"
static bool HandlePPCLine(const LineResult result,
PPCPlatformStrings* const strings) {
StringView line = result.line;
StringView key, value;
if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
if (CpuFeatures_StringView_HasWord(key, "platform")) {
CpuFeatures_StringView_CopyString(value, strings->platform,
sizeof(strings->platform));
} else if (CpuFeatures_StringView_IsEquals(key, str("model"))) {
CpuFeatures_StringView_CopyString(value, strings->model,
sizeof(strings->platform));
} else if (CpuFeatures_StringView_IsEquals(key, str("machine"))) {
CpuFeatures_StringView_CopyString(value, strings->machine,
sizeof(strings->platform));
} else if (CpuFeatures_StringView_IsEquals(key, str("cpu"))) {
CpuFeatures_StringView_CopyString(value, strings->cpu,
sizeof(strings->platform));
}
}
return !result.eof;
}
static void FillProcCpuInfoData(PPCPlatformStrings* const strings) {
const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
if (fd >= 0) {
StackLineReader reader;
StackLineReader_Initialize(&reader, fd);
for (;;) {
if (!HandlePPCLine(StackLineReader_NextLine(&reader), strings)) {
break;
}
}
CpuFeatures_CloseFile(fd);
}
}
static const PPCInfo kEmptyPPCInfo;
PPCInfo GetPPCInfo(void) {
/*
* On Power feature flags aren't currently in cpuinfo so we only look at
* the auxilary vector.
*/
PPCInfo info = kEmptyPPCInfo;
const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
for (size_t i = 0; i < PPC_LAST_; ++i) {
if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
kSetters[i](&info.features, true);
}
}
return info;
}
static const PPCPlatformStrings kEmptyPPCPlatformStrings;
PPCPlatformStrings GetPPCPlatformStrings(void) {
PPCPlatformStrings strings = kEmptyPPCPlatformStrings;
FillProcCpuInfoData(&strings);
strings.type = CpuFeatures_GetPlatformType();
return strings;
}
////////////////////////////////////////////////////////////////////////////////
// Introspection functions
int GetPPCFeaturesEnumValue(const PPCFeatures* features,
PPCFeaturesEnum value) {
if (value >= PPC_LAST_) return false;
return kGetters[value](features);
}
const char* GetPPCFeaturesEnumName(PPCFeaturesEnum value) {
if (value >= PPC_LAST_) return "unknown feature";
return kCpuInfoFlags[value];
}
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