gpu/config/gpu_info_collector_linux.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/config/gpu_info_collector_linux.h"
   6
   7 #include <vector>
   8
   9 #include "base/command_line.h"
  10 #include "base/files/file_util.h"
  11 #include "base/logging.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/message_loop/message_loop.h"
  14 #include "base/strings/string_piece.h"
  15 #include "base/strings/string_split.h"
  16 #include "base/strings/string_tokenizer.h"
  17 #include "base/strings/string_util.h"
  18 #include "base/trace_event/trace_event.h"
  19 #include "gpu/config/gpu_info_collector.h"
  20 #include "ui/gl/gl_bindings.h"
  21 #include "ui/gl/gl_context.h"
  22 #include "ui/gl/gl_implementation.h"
  23 #include "ui/gl/gl_surface.h"
  24 #include "ui/gl/gl_switches.h"
  25
  26 #if defined(USE_LIBPCI)
  27 #include "library_loaders/libpci.h"
  28 #endif
  29
  30 namespace gpu {
  31
  32 namespace {
  33
  34 #if defined(USE_LIBPCI)
  35 // This checks if a system supports PCI bus.
  36 // We check the existence of /sys/bus/pci or /sys/bug/pci_express.
  37 bool IsPciSupported() {
  38   const base::FilePath pci_path("/sys/bus/pci/");
  39   const base::FilePath pcie_path("/sys/bus/pci_express/");
  40   return (base::PathExists(pci_path) ||
  41           base::PathExists(pcie_path));
  42 }
  43 #endif  // defined(USE_LIBPCI)
  44
  45 // Scan /etc/ati/amdpcsdb.default for "ReleaseVersion".
  46 // Return empty string on failing.
  47 std::string CollectDriverVersionATI() {
  48   const base::FilePath::CharType kATIFileName[] =
  49       FILE_PATH_LITERAL("/etc/ati/amdpcsdb.default");
  50   base::FilePath ati_file_path(kATIFileName);
  51   if (!base::PathExists(ati_file_path))
  52     return std::string();
  53   std::string contents;
  54   if (!base::ReadFileToString(ati_file_path, &contents))
  55     return std::string();
  56   base::StringTokenizer t(contents, "\r\n");
  57   while (t.GetNext()) {
  58     std::string line = t.token();
  59     if (base::StartsWith(line, "ReleaseVersion=",
  60                          base::CompareCase::SENSITIVE)) {
  61       size_t begin = line.find_first_of("0123456789");
  62       if (begin != std::string::npos) {
  63         size_t end = line.find_first_not_of("0123456789.", begin);
  64         if (end == std::string::npos)
  65           return line.substr(begin);
  66         else
  67           return line.substr(begin, end - begin);
  68       }
  69     }
  70   }
  71   return std::string();
  72 }
  73
  74 const uint32 kVendorIDIntel = 0x8086;
  75 const uint32 kVendorIDNVidia = 0x10de;
  76 const uint32 kVendorIDAMD = 0x1002;
  77
  78 CollectInfoResult CollectPCIVideoCardInfo(GPUInfo* gpu_info) {
  79   DCHECK(gpu_info);
  80
  81 #if !defined(USE_LIBPCI)
  82   return kCollectInfoNonFatalFailure;
  83 #else
  84
  85   if (IsPciSupported() == false) {
  86     VLOG(1) << "PCI bus scanning is not supported";
  87     return kCollectInfoNonFatalFailure;
  88   }
  89
  90   // TODO(zmo): be more flexible about library name.
  91   LibPciLoader libpci_loader;
  92   if (!libpci_loader.Load("libpci.so.3") &&
  93       !libpci_loader.Load("libpci.so")) {
  94     VLOG(1) << "Failed to locate libpci";
  95     return kCollectInfoNonFatalFailure;
  96   }
  97
  98   pci_access* access = (libpci_loader.pci_alloc)();
  99   DCHECK(access != NULL);
 100   (libpci_loader.pci_init)(access);
 101   (libpci_loader.pci_scan_bus)(access);
 102   bool primary_gpu_identified = false;
 103   for (pci_dev* device = access->devices;
 104        device != NULL; device = device->next) {
 105     // Fill the IDs and class fields.
 106     (libpci_loader.pci_fill_info)(device, 33);
 107     bool is_gpu = false;
 108     switch (device->device_class) {
 109       case PCI_CLASS_DISPLAY_VGA:
 110       case PCI_CLASS_DISPLAY_XGA:
 111       case PCI_CLASS_DISPLAY_3D:
 112         is_gpu = true;
 113         break;
 114       case PCI_CLASS_DISPLAY_OTHER:
 115       default:
 116         break;
 117     }
 118     if (!is_gpu)
 119       continue;
 120     if (device->vendor_id == 0 || device->device_id == 0)
 121       continue;
 122
 123     GPUInfo::GPUDevice gpu;
 124     gpu.vendor_id = device->vendor_id;
 125     gpu.device_id = device->device_id;
 126
 127     if (!primary_gpu_identified) {
 128       primary_gpu_identified = true;
 129       gpu_info->gpu = gpu;
 130     } else {
 131       // TODO(zmo): if there are multiple GPUs, we assume the non Intel
 132       // one is primary. Revisit this logic because we actually don't know
 133       // which GPU we are using at this point.
 134       if (gpu_info->gpu.vendor_id == kVendorIDIntel &&
 135           gpu.vendor_id != kVendorIDIntel) {
 136         gpu_info->secondary_gpus.push_back(gpu_info->gpu);
 137         gpu_info->gpu = gpu;
 138       } else {
 139         gpu_info->secondary_gpus.push_back(gpu);
 140       }
 141     }
 142   }
 143
 144   // Detect Optimus or AMD Switchable GPU.
 145   if (gpu_info->secondary_gpus.size() == 1 &&
 146       gpu_info->secondary_gpus[0].vendor_id == kVendorIDIntel) {
 147     if (gpu_info->gpu.vendor_id == kVendorIDNVidia)
 148       gpu_info->optimus = true;
 149     if (gpu_info->gpu.vendor_id == kVendorIDAMD)
 150       gpu_info->amd_switchable = true;
 151   }
 152
 153   (libpci_loader.pci_cleanup)(access);
 154   if (!primary_gpu_identified)
 155     return kCollectInfoNonFatalFailure;
 156   return kCollectInfoSuccess;
 157 #endif
 158 }
 159
 160 }  // namespace anonymous
 161
 162 CollectInfoResult CollectContextGraphicsInfo(GPUInfo* gpu_info) {
 163   DCHECK(gpu_info);
 164
 165   TRACE_EVENT0("gpu", "gpu_info_collector::CollectGraphicsInfo");
 166
 167   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 168           switches::kGpuNoContextLost)) {
 169     gpu_info->can_lose_context = false;
 170   } else {
 171 #if defined(OS_CHROMEOS)
 172     gpu_info->can_lose_context = false;
 173 #else
 174     // TODO(zmo): need to consider the case where we are running on top
 175     // of desktop GL and GL_ARB_robustness extension is available.
 176     gpu_info->can_lose_context =
 177         (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2);
 178 #endif
 179   }
 180
 181   CollectInfoResult result = CollectGraphicsInfoGL(gpu_info);
 182   gpu_info->context_info_state = result;
 183   return result;
 184 }
 185
 186 CollectInfoResult CollectGpuID(uint32* vendor_id, uint32* device_id) {
 187   DCHECK(vendor_id && device_id);
 188   *vendor_id = 0;
 189   *device_id = 0;
 190
 191   GPUInfo gpu_info;
 192   CollectInfoResult result = CollectPCIVideoCardInfo(&gpu_info);
 193   if (result == kCollectInfoSuccess) {
 194     *vendor_id = gpu_info.gpu.vendor_id;
 195     *device_id = gpu_info.gpu.device_id;
 196   }
 197   return result;
 198 }
 199
 200 CollectInfoResult CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
 201   DCHECK(gpu_info);
 202
 203   CollectInfoResult result = CollectPCIVideoCardInfo(gpu_info);
 204
 205   std::string driver_version;
 206   switch (gpu_info->gpu.vendor_id) {
 207     case kVendorIDAMD:
 208       driver_version = CollectDriverVersionATI();
 209       if (!driver_version.empty()) {
 210         gpu_info->driver_vendor = "ATI / AMD";
 211         gpu_info->driver_version = driver_version;
 212       }
 213       break;
 214     case kVendorIDNVidia:
 215       driver_version = CollectDriverVersionNVidia();
 216       if (!driver_version.empty()) {
 217         gpu_info->driver_vendor = "NVIDIA";
 218         gpu_info->driver_version = driver_version;
 219       }
 220       break;
 221     case kVendorIDIntel:
 222       // In dual-GPU cases, sometimes PCI scan only gives us the
 223       // integrated GPU (i.e., the Intel one).
 224       if (gpu_info->secondary_gpus.size() == 0) {
 225         driver_version = CollectDriverVersionNVidia();
 226         if (!driver_version.empty()) {
 227           gpu_info->driver_vendor = "NVIDIA";
 228           gpu_info->driver_version = driver_version;
 229           gpu_info->optimus = true;
 230           // Put Intel to the secondary GPU list.
 231           gpu_info->secondary_gpus.push_back(gpu_info->gpu);
 232           // Put NVIDIA as the primary GPU.
 233           gpu_info->gpu.vendor_id = kVendorIDNVidia;
 234           gpu_info->gpu.device_id = 0;  // Unknown Device.
 235         }
 236       }
 237       break;
 238   }
 239
 240   gpu_info->basic_info_state = result;
 241   return result;
 242 }
 243
 244 CollectInfoResult CollectDriverInfoGL(GPUInfo* gpu_info) {
 245   DCHECK(gpu_info);
 246
 247   std::string gl_version = gpu_info->gl_version;
 248   if (base::StartsWith(gl_version, "OpenGL ES", base::CompareCase::SENSITIVE))
 249     gl_version = gl_version.substr(10);
 250   std::vector<std::string> pieces;
 251   base::SplitStringAlongWhitespace(gl_version, &pieces);
 252   // In linux, the gl version string might be in the format of
 253   //   GLVersion DriverVendor DriverVersion
 254   if (pieces.size() < 3)
 255     return kCollectInfoNonFatalFailure;
 256
 257   std::string driver_version = pieces[2];
 258   size_t pos = driver_version.find_first_not_of("0123456789.");
 259   if (pos == 0)
 260     return kCollectInfoNonFatalFailure;
 261   if (pos != std::string::npos)
 262     driver_version = driver_version.substr(0, pos);
 263
 264   gpu_info->driver_vendor = pieces[1];
 265   gpu_info->driver_version = driver_version;
 266   return kCollectInfoSuccess;
 267 }
 268
 269 void MergeGPUInfo(GPUInfo* basic_gpu_info,
 270                   const GPUInfo& context_gpu_info) {
 271   MergeGPUInfoGL(basic_gpu_info, context_gpu_info);
 272 }
 273
 274 }  // namespace gpu