gpu/config/gpu_info_collector_x11.cc

   1 // Copyright (c) 2012 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.h"
   6
   7 #include <X11/Xlib.h>
   8 #include <vector>
   9
  10 #include "base/command_line.h"
  11 #include "base/debug/trace_event.h"
  12 #include "base/file_util.h"
  13 #include "base/logging.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "base/strings/string_piece.h"
  17 #include "base/strings/string_split.h"
  18 #include "base/strings/string_tokenizer.h"
  19 #include "base/strings/string_util.h"
  20 #include "library_loaders/libpci.h"
  21 #include "third_party/libXNVCtrl/NVCtrl.h"
  22 #include "third_party/libXNVCtrl/NVCtrlLib.h"
  23 #include "ui/gfx/x/x11_types.h"
  24 #include "ui/gl/gl_bindings.h"
  25 #include "ui/gl/gl_context.h"
  26 #include "ui/gl/gl_implementation.h"
  27 #include "ui/gl/gl_surface.h"
  28 #include "ui/gl/gl_switches.h"
  29
  30 namespace gpu {
  31
  32 namespace {
  33
  34 // This checks if a system supports PCI bus.
  35 // We check the existence of /sys/bus/pci or /sys/bug/pci_express.
  36 bool IsPciSupported() {
  37   const base::FilePath pci_path("/sys/bus/pci/");
  38   const base::FilePath pcie_path("/sys/bus/pci_express/");
  39   return (base::PathExists(pci_path) ||
  40           base::PathExists(pcie_path));
  41 }
  42
  43 // Scan /etc/ati/amdpcsdb.default for "ReleaseVersion".
  44 // Return empty string on failing.
  45 std::string CollectDriverVersionATI() {
  46   const base::FilePath::CharType kATIFileName[] =
  47       FILE_PATH_LITERAL("/etc/ati/amdpcsdb.default");
  48   base::FilePath ati_file_path(kATIFileName);
  49   if (!base::PathExists(ati_file_path))
  50     return std::string();
  51   std::string contents;
  52   if (!base::ReadFileToString(ati_file_path, &contents))
  53     return std::string();
  54   base::StringTokenizer t(contents, "\r\n");
  55   while (t.GetNext()) {
  56     std::string line = t.token();
  57     if (StartsWithASCII(line, "ReleaseVersion=", true)) {
  58       size_t begin = line.find_first_of("0123456789");
  59       if (begin != std::string::npos) {
  60         size_t end = line.find_first_not_of("0123456789.", begin);
  61         if (end == std::string::npos)
  62           return line.substr(begin);
  63         else
  64           return line.substr(begin, end - begin);
  65       }
  66     }
  67   }
  68   return std::string();
  69 }
  70
  71 // Use NVCtrl extention to query NV driver version.
  72 // Return empty string on failing.
  73 std::string CollectDriverVersionNVidia() {
  74   Display* display = gfx::GetXDisplay();
  75   if (!display) {
  76     LOG(ERROR) << "XOpenDisplay failed.";
  77     return std::string();
  78   }
  79   int event_base = 0, error_base = 0;
  80   if (!XNVCTRLQueryExtension(display, &event_base, &error_base)) {
  81     VLOG(1) << "NVCtrl extension does not exist.";
  82     return std::string();
  83   }
  84   int screen_count = ScreenCount(display);
  85   for (int screen = 0; screen < screen_count; ++screen) {
  86     char* buffer = NULL;
  87     if (XNVCTRLIsNvScreen(display, screen) &&
  88         XNVCTRLQueryStringAttribute(display, screen, 0,
  89                                     NV_CTRL_STRING_NVIDIA_DRIVER_VERSION,
  90                                     &buffer)) {
  91       std::string driver_version(buffer);
  92       XFree(buffer);
  93       return driver_version;
  94     }
  95   }
  96   return std::string();
  97 }
  98
  99 const uint32 kVendorIDIntel = 0x8086;
 100 const uint32 kVendorIDNVidia = 0x10de;
 101 const uint32 kVendorIDAMD = 0x1002;
 102
 103 bool CollectPCIVideoCardInfo(GPUInfo* gpu_info) {
 104   DCHECK(gpu_info);
 105
 106   if (IsPciSupported() == false) {
 107     VLOG(1) << "PCI bus scanning is not supported";
 108     return false;
 109   }
 110
 111   // TODO(zmo): be more flexible about library name.
 112   LibPciLoader libpci_loader;
 113   if (!libpci_loader.Load("libpci.so.3") &&
 114       !libpci_loader.Load("libpci.so")) {
 115     VLOG(1) << "Failed to locate libpci";
 116     return false;
 117   }
 118
 119   pci_access* access = (libpci_loader.pci_alloc)();
 120   DCHECK(access != NULL);
 121   (libpci_loader.pci_init)(access);
 122   (libpci_loader.pci_scan_bus)(access);
 123   bool primary_gpu_identified = false;
 124   for (pci_dev* device = access->devices;
 125        device != NULL; device = device->next) {
 126     // Fill the IDs and class fields.
 127     (libpci_loader.pci_fill_info)(device, 33);
 128     bool is_gpu = false;
 129     switch (device->device_class) {
 130       case PCI_CLASS_DISPLAY_VGA:
 131       case PCI_CLASS_DISPLAY_XGA:
 132       case PCI_CLASS_DISPLAY_3D:
 133         is_gpu = true;
 134         break;
 135       case PCI_CLASS_DISPLAY_OTHER:
 136       default:
 137         break;
 138     }
 139     if (!is_gpu)
 140       continue;
 141
 142     GPUInfo::GPUDevice gpu;
 143     gpu.vendor_id = device->vendor_id;
 144     gpu.device_id = device->device_id;
 145
 146     if (!primary_gpu_identified) {
 147       primary_gpu_identified = true;
 148       gpu_info->gpu = gpu;
 149     } else {
 150       // TODO(zmo): if there are multiple GPUs, we assume the non Intel
 151       // one is primary. Revisit this logic because we actually don't know
 152       // which GPU we are using at this point.
 153       if (gpu_info->gpu.vendor_id == kVendorIDIntel &&
 154           gpu.vendor_id != kVendorIDIntel) {
 155         gpu_info->secondary_gpus.push_back(gpu_info->gpu);
 156         gpu_info->gpu = gpu;
 157       } else {
 158         gpu_info->secondary_gpus.push_back(gpu);
 159       }
 160     }
 161   }
 162
 163   // Detect Optimus or AMD Switchable GPU.
 164   if (gpu_info->secondary_gpus.size() == 1 &&
 165       gpu_info->secondary_gpus[0].vendor_id == kVendorIDIntel) {
 166     if (gpu_info->gpu.vendor_id == kVendorIDNVidia)
 167       gpu_info->optimus = true;
 168     if (gpu_info->gpu.vendor_id == kVendorIDAMD)
 169       gpu_info->amd_switchable = true;
 170   }
 171
 172   (libpci_loader.pci_cleanup)(access);
 173   return (primary_gpu_identified);
 174 }
 175
 176 }  // namespace anonymous
 177
 178 CollectInfoResult CollectContextGraphicsInfo(GPUInfo* gpu_info) {
 179   DCHECK(gpu_info);
 180
 181   TRACE_EVENT0("gpu", "gpu_info_collector::CollectGraphicsInfo");
 182
 183   if (CommandLine::ForCurrentProcess()->HasSwitch(
 184           switches::kGpuNoContextLost)) {
 185     gpu_info->can_lose_context = false;
 186   } else {
 187 #if defined(OS_CHROMEOS)
 188     gpu_info->can_lose_context = false;
 189 #else
 190     // TODO(zmo): need to consider the case where we are running on top
 191     // of desktop GL and GL_ARB_robustness extension is available.
 192     gpu_info->can_lose_context =
 193         (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2);
 194 #endif
 195   }
 196
 197   CollectInfoResult result = CollectGraphicsInfoGL(gpu_info);
 198   gpu_info->finalized = true;
 199   return result;
 200 }
 201
 202 GpuIDResult CollectGpuID(uint32* vendor_id, uint32* device_id) {
 203   DCHECK(vendor_id && device_id);
 204   *vendor_id = 0;
 205   *device_id = 0;
 206
 207   GPUInfo gpu_info;
 208   if (CollectPCIVideoCardInfo(&gpu_info)) {
 209     *vendor_id = gpu_info.gpu.vendor_id;
 210     *device_id = gpu_info.gpu.device_id;
 211     if (*vendor_id != 0 && *device_id != 0)
 212       return kGpuIDSuccess;
 213   }
 214   return kGpuIDFailure;
 215 }
 216
 217 CollectInfoResult CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
 218   DCHECK(gpu_info);
 219
 220   bool rt = CollectPCIVideoCardInfo(gpu_info);
 221
 222   std::string driver_version;
 223   switch (gpu_info->gpu.vendor_id) {
 224     case kVendorIDAMD:
 225       driver_version = CollectDriverVersionATI();
 226       if (!driver_version.empty()) {
 227         gpu_info->driver_vendor = "ATI / AMD";
 228         gpu_info->driver_version = driver_version;
 229       }
 230       break;
 231     case kVendorIDNVidia:
 232       driver_version = CollectDriverVersionNVidia();
 233       if (!driver_version.empty()) {
 234         gpu_info->driver_vendor = "NVIDIA";
 235         gpu_info->driver_version = driver_version;
 236       }
 237       break;
 238     case kVendorIDIntel:
 239       // In dual-GPU cases, sometimes PCI scan only gives us the
 240       // integrated GPU (i.e., the Intel one).
 241       if (gpu_info->secondary_gpus.size() == 0) {
 242         driver_version = CollectDriverVersionNVidia();
 243         if (!driver_version.empty()) {
 244           gpu_info->driver_vendor = "NVIDIA";
 245           gpu_info->driver_version = driver_version;
 246           gpu_info->optimus = true;
 247           // Put Intel to the secondary GPU list.
 248           gpu_info->secondary_gpus.push_back(gpu_info->gpu);
 249           // Put NVIDIA as the primary GPU.
 250           gpu_info->gpu.vendor_id = kVendorIDNVidia;
 251           gpu_info->gpu.device_id = 0;  // Unknown Device.
 252         }
 253       }
 254       break;
 255   }
 256
 257   return rt ? kCollectInfoSuccess : kCollectInfoNonFatalFailure;
 258 }
 259
 260 CollectInfoResult CollectDriverInfoGL(GPUInfo* gpu_info) {
 261   DCHECK(gpu_info);
 262
 263   std::string gl_version = gpu_info->gl_version;
 264   if (StartsWithASCII(gl_version, "OpenGL ES", true))
 265     gl_version = gl_version.substr(10);
 266   std::vector<std::string> pieces;
 267   base::SplitStringAlongWhitespace(gl_version, &pieces);
 268   // In linux, the gl version string might be in the format of
 269   //   GLVersion DriverVendor DriverVersion
 270   if (pieces.size() < 3)
 271     return kCollectInfoNonFatalFailure;
 272
 273   std::string driver_version = pieces[2];
 274   size_t pos = driver_version.find_first_not_of("0123456789.");
 275   if (pos == 0)
 276     return kCollectInfoNonFatalFailure;
 277   if (pos != std::string::npos)
 278     driver_version = driver_version.substr(0, pos);
 279
 280   gpu_info->driver_vendor = pieces[1];
 281   gpu_info->driver_version = driver_version;
 282   return kCollectInfoSuccess;
 283 }
 284
 285 void MergeGPUInfo(GPUInfo* basic_gpu_info,
 286                   const GPUInfo& context_gpu_info) {
 287   MergeGPUInfoGL(basic_gpu_info, context_gpu_info);
 288 }
 289
 290 }  // namespace gpu