nvidia-gpu: Implement NvAPI_GPU_GetGPUInfo

src/nvapi_gpu.cpp

@@ -486,6 +486,45 @@ extern "C" {
         return Ok(n);
     }
 
+    NvAPI_Status __cdecl NvAPI_GPU_GetGPUInfo(NvPhysicalGpuHandle hPhysicalGpu, NV_GPU_INFO* pGpuInfo) {
+        constexpr auto n = __func__;
+
+        if (nvapiAdapterRegistry == nullptr)
+            return ApiNotInitialized(n);
+
+        if (pGpuInfo == nullptr)
+            return InvalidArgument(n);
+
+        if (pGpuInfo->version != NV_GPU_INFO_VER1 && pGpuInfo->version != NV_GPU_INFO_VER2)
+            return IncompatibleStructVersion(n);
+
+        auto adapter = reinterpret_cast<NvapiAdapter*>(hPhysicalGpu);
+        if (!nvapiAdapterRegistry->IsAdapter(adapter))
+            return ExpectedPhysicalGpuHandle(n);
+
+        auto architectureId = adapter->GetArchitectureId();
+
+        switch (pGpuInfo->version) {
+            case NV_GPU_INFO_VER1: {
+                auto pGpuInfoV1 = reinterpret_cast<NV_GPU_INFO_V1*>(pGpuInfo);
+                *pGpuInfoV1 = {};
+                break;
+            }
+            case NV_GPU_INFO_VER2:
+                *pGpuInfo = {};
+                if (architectureId >= NV_GPU_ARCHITECTURE_TU100) {
+                    // Values are taken from RTX4080
+                    pGpuInfo->rayTracingCores = 76;
+                    pGpuInfo->tensorCores = 304;
+                }
+                break;
+            default:
+                return IncompatibleStructVersion(n);
+        }
+
+        return Ok(n);
+    }
+
     NvAPI_Status __cdecl NvAPI_GPU_GetVbiosVersionString(NvPhysicalGpuHandle hPhysicalGpu, NvAPI_ShortString szBiosRevision) {
         constexpr auto n = __func__;
 

src/nvapi_interface.cpp

@@ -95,6 +95,7 @@ extern "C" {
         INSERT_AND_RETURN_WHEN_EQUALS(NvAPI_GPU_GetLogicalGpuInfo)
         INSERT_AND_RETURN_WHEN_EQUALS(NvAPI_GPU_GetArchInfo)
         INSERT_AND_RETURN_WHEN_EQUALS(NvAPI_GPU_CudaEnumComputeCapableGpus)
+        INSERT_AND_RETURN_WHEN_EQUALS(NvAPI_GPU_GetGPUInfo)
         INSERT_AND_RETURN_WHEN_EQUALS(NvAPI_GPU_GetDynamicPstatesInfoEx)
         INSERT_AND_RETURN_WHEN_EQUALS(NvAPI_GPU_GetThermalSettings)
         INSERT_AND_RETURN_WHEN_EQUALS(NvAPI_GPU_GetVbiosVersionString)

tests/nvapi_sysinfo.cpp

@@ -677,6 +677,82 @@ TEST_CASE("Sysinfo methods succeed", "[.sysinfo]") {
         }
     }
 
+    SECTION("GetGPUInfo returns OK") {
+        struct Data {
+            uint32_t deviceId;
+            std::string extensionName;
+            uint32_t expectedRayTracingCores;
+            uint32_t expectedTensorCores;
+        };
+        auto args = GENERATE(
+            Data{0x2600, VK_KHR_FRAGMENT_SHADING_RATE_EXTENSION_NAME, 76, 304},
+            Data{0x2000, VK_KHR_FRAGMENT_SHADING_RATE_EXTENSION_NAME, 76, 304},
+            Data{0x2000, VK_NV_SHADING_RATE_IMAGE_EXTENSION_NAME, 76, 304},
+            Data{0x2000, VK_NVX_IMAGE_VIEW_HANDLE_EXTENSION_NAME, 0, 0},
+            Data{0x2000, VK_NV_CLIP_SPACE_W_SCALING_EXTENSION_NAME, 0, 0},
+            Data{0x2000, VK_NV_VIEWPORT_ARRAY2_EXTENSION_NAME, 0, 0},
+            Data{0x2000, "ext", 0, 0});
+
+        ALLOW_CALL(*vulkan, GetDeviceExtensions(_, _)) // NOLINT(bugprone-use-after-move)
+            .RETURN(std::set<std::string>{
+                VK_KHR_DRIVER_PROPERTIES_EXTENSION_NAME,
+                args.extensionName});
+        ALLOW_CALL(*vulkan, GetPhysicalDeviceProperties2(_, _, _))
+            .SIDE_EFFECT(
+                ConfigureGetPhysicalDeviceProperties2(_3,
+                    [&args](auto props, auto idProps, auto pciBusInfoProps, auto driverProps, auto fragmentShadingRateProps) {
+                        props->deviceID = args.deviceId;
+                        driverProps->driverID = VK_DRIVER_ID_NVIDIA_PROPRIETARY;
+                        if (args.extensionName == VK_KHR_FRAGMENT_SHADING_RATE_EXTENSION_NAME)
+                            fragmentShadingRateProps->primitiveFragmentShadingRateWithMultipleViewports = VK_TRUE;
+                    }));
+
+        SetupResourceFactory(std::move(dxgiFactory), std::move(vulkan), std::move(nvml), std::move(lfx));
+        REQUIRE(NvAPI_Initialize() == NVAPI_OK);
+
+        NvPhysicalGpuHandle handle;
+        REQUIRE(NvAPI_SYS_GetPhysicalGpuFromDisplayId(primaryDisplayId, &handle) == NVAPI_OK);
+
+        SECTION("GetGPUInfo (V1) returns OK") {
+            NV_GPU_INFO_V1 gpuInfo;
+            gpuInfo.version = NV_GPU_INFO_VER1;
+            REQUIRE(NvAPI_GPU_GetGPUInfo(handle, reinterpret_cast<NV_GPU_INFO*>(&gpuInfo)) == NVAPI_OK);
+        }
+
+        SECTION("GetGPUInfo (V2) returns OK") {
+            NV_GPU_INFO_V2 gpuInfo;
+            gpuInfo.version = NV_GPU_INFO_VER2;
+            REQUIRE(NvAPI_GPU_GetGPUInfo(handle, &gpuInfo) == NVAPI_OK);
+            REQUIRE(gpuInfo.rayTracingCores == args.expectedRayTracingCores);
+            REQUIRE(gpuInfo.tensorCores == args.expectedTensorCores);
+        }
+    }
+
+    SECTION("GetGPUInfo with unknown struct version returns incompatible-struct-version") {
+        SetupResourceFactory(std::move(dxgiFactory), std::move(vulkan), std::move(nvml), std::move(lfx));
+        REQUIRE(NvAPI_Initialize() == NVAPI_OK);
+
+        NvPhysicalGpuHandle handle;
+        REQUIRE(NvAPI_SYS_GetPhysicalGpuFromDisplayId(primaryDisplayId, &handle) == NVAPI_OK);
+
+        NV_GPU_INFO gpuInfo;
+        gpuInfo.version = NV_GPU_INFO_VER2 + 1;
+        REQUIRE(NvAPI_GPU_GetGPUInfo(handle, &gpuInfo) == NVAPI_INCOMPATIBLE_STRUCT_VERSION);
+    }
+
+    SECTION("GetGPUInfo with current struct version returns not incompatible-struct-version") {
+        // This test should fail when a header update provides a newer not yet implemented struct version
+        SetupResourceFactory(std::move(dxgiFactory), std::move(vulkan), std::move(nvml), std::move(lfx));
+        REQUIRE(NvAPI_Initialize() == NVAPI_OK);
+
+        NvPhysicalGpuHandle handle;
+        REQUIRE(NvAPI_SYS_GetPhysicalGpuFromDisplayId(primaryDisplayId, &handle) == NVAPI_OK);
+
+        NV_GPU_INFO gpuInfo;
+        gpuInfo.version = NV_GPU_INFO_VER;
+        REQUIRE(NvAPI_GPU_GetGPUInfo(handle, &gpuInfo) != NVAPI_INCOMPATIBLE_STRUCT_VERSION);
+    }
+
     SECTION("GetPstates20 returns no-implementation") {
         SetupResourceFactory(std::move(dxgiFactory), std::move(vulkan), std::move(nvml), std::move(lfx));
         REQUIRE(NvAPI_Initialize() == NVAPI_OK);