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 (StartsWithASCII(line, "ReleaseVersion=", true)) {
  60       size_t begin = line.find_first_of("0123456789");
  61       if (begin != std::string::npos) {
  62         size_t end = line.find_first_not_of("0123456789.", begin);
  63         if (end == std::string::npos)
  64           return line.substr(begin);
  65         else
  66           return line.substr(begin, end - begin);
  67       }
  68     }
  69   }
  70   return std::string();
  71 }
  72
  73 const uint32 kVendorIDIntel = 0x8086;
  74 const uint32 kVendorIDNVidia = 0x10de;
  75 const uint32 kVendorIDAMD = 0x1002;
  76
  77 CollectInfoResult CollectPCIVideoCardInfo(GPUInfo* gpu_info) {
  78   DCHECK(gpu_info);
  79
  80 #if !defined(USE_LIBPCI)
  81   return kCollectInfoNonFatalFailure;
  82 #else
  83
  84   if (IsPciSupported() == false) {
  85     VLOG(1) << "PCI bus scanning is not supported";
  86     return kCollectInfoNonFatalFailure;
  87   }
  88
  89   // TODO(zmo): be more flexible about library name.
  90   LibPciLoader libpci_loader;
  91   if (!libpci_loader.Load("libpci.so.3") &&
  92       !libpci_loader.Load("libpci.so")) {
  93     VLOG(1) << "Failed to locate libpci";
  94     return kCollectInfoNonFatalFailure;
  95   }
  96
  97   pci_access* access = (libpci_loader.pci_alloc)();
  98   DCHECK(access != NULL);
  99   (libpci_loader.pci_init)(access);
 100   (libpci_loader.pci_scan_bus)(access);
 101   bool primary_gpu_identified = false;
 102   for (pci_dev* device = access->devices;
 103        device != NULL; device = device->next) {
 104     // Fill the IDs and class fields.
 105     (libpci_loader.pci_fill_info)(device, 33);
 106     bool is_gpu = false;
 107     switch (device->device_class) {
 108       case PCI_CLASS_DISPLAY_VGA:
 109       case PCI_CLASS_DISPLAY_XGA:
 110       case PCI_CLASS_DISPLAY_3D:
 111         is_gpu = true;
 112         break;
 113       case PCI_CLASS_DISPLAY_OTHER:
 114       default:
 115         break;
 116     }
 117     if (!is_gpu)
 118       continue;
 119     if (device->vendor_id == 0 || device->device_id == 0)
 120       continue;
 121
 122     GPUInfo::GPUDevice gpu;
 123     gpu.vendor_id = device->vendor_id;
 124     gpu.device_id = device->device_id;
 125
 126     if (!primary_gpu_identified) {
 127       primary_gpu_identified = true;
 128       gpu_info->gpu = gpu;
 129     } else {
 130       // TODO(zmo): if there are multiple GPUs, we assume the non Intel
 131       // one is primary. Revisit this logic because we actually don't know
 132       // which GPU we are using at this point.
 133       if (gpu_info->gpu.vendor_id == kVendorIDIntel &&
 134           gpu.vendor_id != kVendorIDIntel) {
 135         gpu_info->secondary_gpus.push_back(gpu_info->gpu);
 136         gpu_info->gpu = gpu;
 137       } else {
 138         gpu_info->secondary_gpus.push_back(gpu);
 139       }
 140     }
 141   }
 142
 143   // Detect Optimus or AMD Switchable GPU.
 144   if (gpu_info->secondary_gpus.size() == 1 &&
 145       gpu_info->secondary_gpus[0].vendor_id == kVendorIDIntel) {
 146     if (gpu_info->gpu.vendor_id == kVendorIDNVidia)
 147       gpu_info->optimus = true;
 148     if (gpu_info->gpu.vendor_id == kVendorIDAMD)
 149       gpu_info->amd_switchable = true;
 150   }
 151
 152   (libpci_loader.pci_cleanup)(access);
 153   if (!primary_gpu_identified)
 154     return kCollectInfoNonFatalFailure;
 155   return kCollectInfoSuccess;
 156 #endif
 157 }
 158
 159 }  // namespace anonymous
 160
 161 CollectInfoResult CollectContextGraphicsInfo(GPUInfo* gpu_info) {
 162   DCHECK(gpu_info);
 163
 164   TRACE_EVENT0("gpu", "gpu_info_collector::CollectGraphicsInfo");
 165
 166   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 167           switches::kGpuNoContextLost)) {
 168     gpu_info->can_lose_context = false;
 169   } else {
 170 #if defined(OS_CHROMEOS)
 171     gpu_info->can_lose_context = false;
 172 #else
 173     // TODO(zmo): need to consider the case where we are running on top
 174     // of desktop GL and GL_ARB_robustness extension is available.
 175     gpu_info->can_lose_context =
 176         (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2);
 177 #endif
 178   }
 179
 180   CollectInfoResult result = CollectGraphicsInfoGL(gpu_info);
 181   gpu_info->context_info_state = result;
 182   return result;
 183 }
 184
 185 CollectInfoResult CollectGpuID(uint32* vendor_id, uint32* device_id) {
 186   DCHECK(vendor_id && device_id);
 187   *vendor_id = 0;
 188   *device_id = 0;
 189
 190   GPUInfo gpu_info;
 191   CollectInfoResult result = CollectPCIVideoCardInfo(&gpu_info);
 192   if (result == kCollectInfoSuccess) {
 193     *vendor_id = gpu_info.gpu.vendor_id;
 194     *device_id = gpu_info.gpu.device_id;
 195   }
 196   return result;
 197 }
 198
 199 CollectInfoResult CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
 200   DCHECK(gpu_info);
 201
 202   CollectInfoResult result = CollectPCIVideoCardInfo(gpu_info);
 203
 204   std::string driver_version;
 205   switch (gpu_info->gpu.vendor_id) {
 206     case kVendorIDAMD:
 207       driver_version = CollectDriverVersionATI();
 208       if (!driver_version.empty()) {
 209         gpu_info->driver_vendor = "ATI / AMD";
 210         gpu_info->driver_version = driver_version;
 211       }
 212       break;
 213     case kVendorIDNVidia:
 214       driver_version = CollectDriverVersionNVidia();
 215       if (!driver_version.empty()) {
 216         gpu_info->driver_vendor = "NVIDIA";
 217         gpu_info->driver_version = driver_version;
 218       }
 219       break;
 220     case kVendorIDIntel:
 221       // In dual-GPU cases, sometimes PCI scan only gives us the
 222       // integrated GPU (i.e., the Intel one).
 223       if (gpu_info->secondary_gpus.size() == 0) {
 224         driver_version = CollectDriverVersionNVidia();
 225         if (!driver_version.empty()) {
 226           gpu_info->driver_vendor = "NVIDIA";
 227           gpu_info->driver_version = driver_version;
 228           gpu_info->optimus = true;
 229           // Put Intel to the secondary GPU list.
 230           gpu_info->secondary_gpus.push_back(gpu_info->gpu);
 231           // Put NVIDIA as the primary GPU.
 232           gpu_info->gpu.vendor_id = kVendorIDNVidia;
 233           gpu_info->gpu.device_id = 0;  // Unknown Device.
 234         }
 235       }
 236       break;
 237   }
 238
 239   gpu_info->basic_info_state = result;
 240   return result;
 241 }
 242
 243 CollectInfoResult CollectDriverInfoGL(GPUInfo* gpu_info) {
 244   DCHECK(gpu_info);
 245
 246   std::string gl_version = gpu_info->gl_version;
 247   if (StartsWithASCII(gl_version, "OpenGL ES", true))
 248     gl_version = gl_version.substr(10);
 249   std::vector<std::string> pieces;
 250   base::SplitStringAlongWhitespace(gl_version, &pieces);
 251   // In linux, the gl version string might be in the format of
 252   //   GLVersion DriverVendor DriverVersion
 253   if (pieces.size() < 3)
 254     return kCollectInfoNonFatalFailure;
 255
 256   std::string driver_version = pieces[2];
 257   size_t pos = driver_version.find_first_not_of("0123456789.");
 258   if (pos == 0)
 259     return kCollectInfoNonFatalFailure;
 260   if (pos != std::string::npos)
 261     driver_version = driver_version.substr(0, pos);
 262
 263   gpu_info->driver_vendor = pieces[1];
 264   gpu_info->driver_version = driver_version;
 265   return kCollectInfoSuccess;
 266 }
 267
 268 void MergeGPUInfo(GPUInfo* basic_gpu_info,
 269                   const GPUInfo& context_gpu_info) {
 270   MergeGPUInfoGL(basic_gpu_info, context_gpu_info);
 271 }
 272
 273 }  // namespace gpu