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//
// Copyright (c) 2013-2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// SystemInfo_linux.cpp: implementation of the Linux-specific parts of SystemInfo.h
#include "gpu_info_util/SystemInfo_internal.h"
#include <cstring>
#include <fstream>
#include "common/angleutils.h"
#include "common/debug.h"
namespace angle
{
namespace
{
bool ReadWholeFile(const char *filename, std::string *content)
{
std::ifstream file(filename);
if (!file)
{
return false;
}
*content = std::string(std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>());
return true;
}
// Scan /sys/module/amdgpu/version.
bool GetAMDBrahmaDriverVersion(std::string *version)
{
*version = "";
std::string content;
return ReadWholeFile("/sys/module/amdgpu/version", &content) &&
ParseAMDBrahmaDriverVersion(content, version);
}
// Scan /etc/ati/amdpcsdb.default for "ReleaseVersion".
bool GetAMDCatalystDriverVersion(std::string *version)
{
*version = "";
std::string content;
return ReadWholeFile("/etc/ati/amdpcsdb.default", &content) &&
ParseAMDCatalystDriverVersion(content, version);
}
} // anonymous namespace
#if !defined(GPU_INFO_USE_X11)
bool GetNvidiaDriverVersionWithXNVCtrl(std::string *version)
{
return false;
}
#endif
#if !defined(GPU_INFO_USE_LIBPCI)
bool GetPCIDevicesWithLibPCI(std::vector<GPUDeviceInfo> *devices)
{
return false;
}
#endif
bool GetSystemInfo(SystemInfo *info)
{
if (!GetPCIDevicesWithLibPCI(&(info->gpus)))
{
return false;
}
if (info->gpus.size() == 0)
{
return false;
}
FindPrimaryGPU(info);
for (size_t i = 0; i < info->gpus.size(); ++i)
{
GPUDeviceInfo *gpu = &info->gpus[i];
// New GPUs might be added inside this loop, don't query for their driver version again
if (!gpu->driverVendor.empty())
{
continue;
}
if (IsAMD(gpu->vendorId))
{
std::string version;
if (GetAMDBrahmaDriverVersion(&version))
{
gpu->driverVendor = "AMD (Brahma)";
gpu->driverVersion = std::move(version);
}
else if (GetAMDCatalystDriverVersion(&version))
{
gpu->driverVendor = "AMD (Catalyst)";
gpu->driverVersion = std::move(version);
}
}
if (IsNvidia(gpu->vendorId))
{
std::string version;
if (GetNvidiaDriverVersionWithXNVCtrl(&version))
{
gpu->driverVendor = "Nvidia";
gpu->driverVersion = std::move(version);
}
}
// In dual-GPU cases the PCI scan sometimes only gives us the Intel GPU.
// If we are able to query for the Nvidia driver version, it means there
// was hidden Nvidia GPU, so we add it to the list and make it primary.
if (IsIntel(gpu->vendorId) && info->gpus.size() == 1)
{
std::string version;
if (GetNvidiaDriverVersionWithXNVCtrl(&version))
{
GPUDeviceInfo nvidiaInfo;
nvidiaInfo.vendorId = kVendorID_Nvidia;
nvidiaInfo.deviceId = 0;
gpu->driverVendor = "Nvidia";
gpu->driverVersion = std::move(version);
info->gpus.emplace_back(std::move(nvidiaInfo));
info->isOptimus = true;
}
}
}
return true;
}
} // namespace angle
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