diff options
Diffstat (limited to 'src/VBox/Additions/3D/win/VBoxWddmUmHlp/D3DKMT.cpp')
| -rw-r--r-- | src/VBox/Additions/3D/win/VBoxWddmUmHlp/D3DKMT.cpp | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/src/VBox/Additions/3D/win/VBoxWddmUmHlp/D3DKMT.cpp b/src/VBox/Additions/3D/win/VBoxWddmUmHlp/D3DKMT.cpp new file mode 100644 index 00000000..b30698a5 --- /dev/null +++ b/src/VBox/Additions/3D/win/VBoxWddmUmHlp/D3DKMT.cpp @@ -0,0 +1,260 @@ +/* $Id: D3DKMT.cpp $ */ +/** @file + * WDDM Kernel Mode Thunks helpers. + */ + +/* + * Copyright (C) 2018-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + +/* We're unable to use standard r3 vbgl-based backdoor logging API because win8 Metro apps + * can not do CreateFile/Read/Write by default. + * This is why we use miniport escape functionality to issue backdoor log string to the miniport + * and submit it to host via standard r0 backdoor logging api accordingly + */ + +#include "UmHlpInternal.h" + + +/** Loads a system DLL. + * + * @returns Module handle or NULL + * @param pszName The DLL name. + */ +DECLCALLBACK(HMODULE) VBoxWddmLoadSystemDll(const char *pszName) +{ + char szPath[MAX_PATH]; + UINT cchPath = GetSystemDirectoryA(szPath, sizeof(szPath)); + size_t cbName = strlen(pszName) + 1; + if (cchPath + 1 + cbName > sizeof(szPath)) + { + SetLastError(ERROR_FILENAME_EXCED_RANGE); + return NULL; + } + szPath[cchPath] = '\\'; + memcpy(&szPath[cchPath + 1], pszName, cbName); + return LoadLibraryA(szPath); +} + +DECLCALLBACK(void) VBoxWddmLoadAdresses(HMODULE hmod, VBOXWDDMDLLPROC *paProcs) +{ + struct VBOXWDDMDLLPROC *pIter = paProcs; + while (pIter->pszName) + { + FARPROC pfn = GetProcAddress(hmod, pIter->pszName); + *pIter->ppfn = pfn; + ++pIter; + } +} + +/* + * Kernel Mode Thunks (KMT) initialization. + */ + +#define D3DKMT_LOAD_ENTRY(a) { #a, (FARPROC *)&g_D3DKMT.pfn##a } + +static D3DKMTFUNCTIONS g_D3DKMT = { 0 }; +static VBOXWDDMDLLPROC g_D3DKMTLoadTable[] = +{ + D3DKMT_LOAD_ENTRY(D3DKMTOpenAdapterFromHdc), + D3DKMT_LOAD_ENTRY(D3DKMTOpenAdapterFromDeviceName), + D3DKMT_LOAD_ENTRY(D3DKMTCloseAdapter), + D3DKMT_LOAD_ENTRY(D3DKMTQueryAdapterInfo), + D3DKMT_LOAD_ENTRY(D3DKMTEscape), + D3DKMT_LOAD_ENTRY(D3DKMTCreateDevice), + D3DKMT_LOAD_ENTRY(D3DKMTDestroyDevice), + D3DKMT_LOAD_ENTRY(D3DKMTCreateContext), + D3DKMT_LOAD_ENTRY(D3DKMTDestroyContext), + D3DKMT_LOAD_ENTRY(D3DKMTCreateAllocation), + D3DKMT_LOAD_ENTRY(D3DKMTDestroyAllocation), + D3DKMT_LOAD_ENTRY(D3DKMTRender), + D3DKMT_LOAD_ENTRY(D3DKMTPresent), + D3DKMT_LOAD_ENTRY(D3DKMTGetSharedPrimaryHandle), + D3DKMT_LOAD_ENTRY(D3DKMTQueryResourceInfo), + D3DKMT_LOAD_ENTRY(D3DKMTOpenResource), + D3DKMT_LOAD_ENTRY(D3DKMTEnumAdapters), + D3DKMT_LOAD_ENTRY(D3DKMTOpenAdapterFromLuid), + {NULL, NULL}, +}; + +#undef D3DKMT_LOAD_ENTRY + +/** Initialize Kernel Mode Thunks (KMT) pointers in the g_D3DKMT structure. + * + * @returns True if successful. + */ +DECLCALLBACK(int) D3DKMTLoad(void) +{ + /* Modules which use D3DKMT must link with gdi32. */ + HMODULE hmod = GetModuleHandleA("gdi32.dll"); + Assert(hmod); + if (hmod) + { + VBoxWddmLoadAdresses(hmod, g_D3DKMTLoadTable); + } + return hmod != NULL; +} + +DECLCALLBACK(D3DKMTFUNCTIONS const *) D3DKMTFunctions(void) +{ + return &g_D3DKMT; +} + + +/* + * Getting VirtualBox Graphics Adapter handle. + */ + +static NTSTATUS vboxDispKmtOpenAdapterFromHdc(D3DKMT_HANDLE *phAdapter, LUID *pLuid) +{ + *phAdapter = 0; + + D3DKMTFUNCTIONS const *d3dkmt = D3DKMTFunctions(); + if (d3dkmt->pfnD3DKMTOpenAdapterFromHdc == NULL) + return STATUS_NOT_SUPPORTED; + + D3DKMT_OPENADAPTERFROMHDC OpenAdapterData; + memset(&OpenAdapterData, 0, sizeof(OpenAdapterData)); + + for (int i = 0; ; ++i) + { + DISPLAY_DEVICEA dd; + memset(&dd, 0, sizeof(dd)); + dd.cb = sizeof(dd); + + if (!EnumDisplayDevicesA(NULL, i, &dd, 0)) + break; + + if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) + { + OpenAdapterData.hDc = CreateDCA(NULL, dd.DeviceName, NULL, NULL); + break; + } + } + + Assert(OpenAdapterData.hDc); + + NTSTATUS Status; + if (OpenAdapterData.hDc) + { + Status = d3dkmt->pfnD3DKMTOpenAdapterFromHdc(&OpenAdapterData); + Assert(Status == STATUS_SUCCESS); + if (Status == STATUS_SUCCESS) + { + *phAdapter = OpenAdapterData.hAdapter; + if (pLuid) + { + *pLuid = OpenAdapterData.AdapterLuid; + } + } + + DeleteDC(OpenAdapterData.hDc); + } + else + { + Status = STATUS_NOT_SUPPORTED; + } + + return Status; +} + +static NTSTATUS vboxDispKmtOpenAdapterFromLuid(D3DKMT_HANDLE *phAdapter, LUID *pLuid) +{ + *phAdapter = 0; + + D3DKMTFUNCTIONS const *d3dkmt = D3DKMTFunctions(); + if ( d3dkmt->pfnD3DKMTOpenAdapterFromLuid == NULL + || d3dkmt->pfnD3DKMTEnumAdapters == NULL) + return STATUS_NOT_SUPPORTED; + + D3DKMT_ENUMADAPTERS EnumAdaptersData; + memset(&EnumAdaptersData, 0, sizeof(EnumAdaptersData)); + EnumAdaptersData.NumAdapters = RT_ELEMENTS(EnumAdaptersData.Adapters); + + NTSTATUS Status = d3dkmt->pfnD3DKMTEnumAdapters(&EnumAdaptersData); + Assert(Status == STATUS_SUCCESS); + if (Status == STATUS_SUCCESS) + { + Assert(EnumAdaptersData.NumAdapters); + + /* Try the same twice: if we fail to open the adapter containing present sources, + * then try to open any adapter. + */ + for (int iPass = 0; iPass < 2 && *phAdapter == 0; ++iPass) + { + for (ULONG i = 0; i < EnumAdaptersData.NumAdapters; ++i) + { + if (iPass > 0 || EnumAdaptersData.Adapters[i].NumOfSources) + { + D3DKMT_OPENADAPTERFROMLUID OpenAdapterData; + memset(&OpenAdapterData, 0, sizeof(OpenAdapterData)); + OpenAdapterData.AdapterLuid = EnumAdaptersData.Adapters[i].AdapterLuid; + + Status = d3dkmt->pfnD3DKMTOpenAdapterFromLuid(&OpenAdapterData); + Assert(Status == STATUS_SUCCESS); + if (Status == STATUS_SUCCESS) + { + *phAdapter = OpenAdapterData.hAdapter; + if (pLuid) + { + *pLuid = EnumAdaptersData.Adapters[i].AdapterLuid; + } + break; + } + } + } + } + } + + return Status; +} + +NTSTATUS vboxDispKmtOpenAdapter2(D3DKMT_HANDLE *phAdapter, LUID *pLuid) +{ + NTSTATUS Status = vboxDispKmtOpenAdapterFromLuid(phAdapter, pLuid); + if (Status != STATUS_SUCCESS) + { + /* Fallback for pre-Windows8 */ + Status = vboxDispKmtOpenAdapterFromHdc(phAdapter, pLuid); + } + + return Status; +} + +NTSTATUS vboxDispKmtOpenAdapter(D3DKMT_HANDLE *phAdapter) +{ + return vboxDispKmtOpenAdapter2(phAdapter, NULL); +} + +NTSTATUS vboxDispKmtCloseAdapter(D3DKMT_HANDLE hAdapter) +{ + D3DKMTFUNCTIONS const *d3dkmt = D3DKMTFunctions(); + if (d3dkmt->pfnD3DKMTCloseAdapter == NULL) + return STATUS_NOT_SUPPORTED; + + D3DKMT_CLOSEADAPTER CloseAdapterData; + CloseAdapterData.hAdapter = hAdapter; + + NTSTATUS Status = d3dkmt->pfnD3DKMTCloseAdapter(&CloseAdapterData); + Assert(Status == STATUS_SUCCESS); + + return Status; +} |