[idd] implement CIVSHMEM and open it

idd/LGIdd/CIVSHMEM.cpp

@@ -0,0 +1,168 @@
+#include "CIVSHMEM.h"
+
+#include <Windows.h>
+#include <SetupAPI.h>
+#include <algorithm>
+#include <winioctl.h>
+
+#include "ivshmem/ivshmem.h"
+
+CIVSHMEM::CIVSHMEM()
+{
+}
+
+CIVSHMEM::~CIVSHMEM()
+{
+  if (m_handle == INVALID_HANDLE_VALUE)
+    return;
+
+  Close();
+  CloseHandle(m_handle);
+}
+
+bool CIVSHMEM::Init()
+{
+  HDEVINFO                         devInfoSet;
+  SP_DEVINFO_DATA                  devInfoData;
+  SP_DEVICE_INTERFACE_DATA         devInterfaceData;
+  PSP_DEVICE_INTERFACE_DETAIL_DATA infData = nullptr;
+
+  devInfoSet = SetupDiGetClassDevs(&GUID_DEVINTERFACE_IVSHMEM, nullptr, nullptr,
+    DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
+
+  devInfoData.cbSize      = sizeof(devInfoData);
+  devInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
+
+  m_devices.clear();
+  for (int i = 0; SetupDiEnumDeviceInfo(devInfoSet, i, &devInfoData); ++i)
+  {
+    DWORD bus, addr;
+    if (!SetupDiGetDeviceRegistryProperty(devInfoSet, &devInfoData, SPDRP_BUSNUMBER,
+        nullptr, (BYTE*)&bus, sizeof(bus), nullptr))
+      bus = 0xffff;
+
+    if (!SetupDiGetDeviceRegistryProperty(devInfoSet, &devInfoData, SPDRP_ADDRESS,
+        nullptr, (BYTE*)&addr, sizeof(addr), nullptr))
+      addr = 0xffff;
+
+    IVSHMEMData data;
+    data.busAddr = ((DWORD64)bus) << 32 | addr;
+    memcpy(&data.devInfoData, &devInfoData, sizeof(devInfoData));
+    m_devices.push_back(data);
+  }
+
+  if (GetLastError() != ERROR_NO_MORE_ITEMS)
+  {
+    m_devices.clear();
+    SetupDiDestroyDeviceInfoList(devInfoSet);
+    return false;
+  }
+
+  std::sort(m_devices.begin(), m_devices.end(),
+      [](const IVSHMEMData & a, const IVSHMEMData & b) -> bool
+    { return a.busAddr < b.busAddr; });
+
+
+  HKEY hkeyLG;
+  IVSHMEMData * device = nullptr;
+  DWORD shmDevice = 0;
+
+  if (RegOpenKeyA(HKEY_LOCAL_MACHINE, "SOFTWARE\\Looking Glass", &hkeyLG) == ERROR_SUCCESS)
+  {
+    DWORD dataType;
+    DWORD dataSize = sizeof(shmDevice);
+    if (RegQueryValueExA(hkeyLG, "shmDevice", nullptr, &dataType, (BYTE*)&shmDevice, &dataSize) != ERROR_SUCCESS ||
+        dataType != REG_DWORD)
+      shmDevice = 0;
+  }
+
+  DWORD i = 0;
+  for (auto it = m_devices.begin(); it != m_devices.end(); ++it, ++i)
+  {
+    DWORD bus = it->busAddr >> 32;
+    DWORD addr = it->busAddr & 0xFFFFFFFF;
+    printf("IVSHMEM %u%c on bus 0x%lx, device 0x%lx, function 0x%lx\n",
+      i, i == shmDevice ? '*' : ' ', bus, addr >> 16, addr & 0xFFFF);
+
+    if (i == shmDevice)
+      device = &(*it);
+  }
+
+  if (!device)
+  {
+    SetupDiDestroyDeviceInfoList(devInfoSet);
+    return false;
+  }
+
+  if (SetupDiEnumDeviceInterfaces(devInfoSet, &devInfoData, &GUID_DEVINTERFACE_IVSHMEM, 0, &devInterfaceData) == FALSE)
+  {
+    SetupDiDestroyDeviceInfoList(devInfoSet);
+    return false;
+  }
+
+  DWORD reqSize = 0;
+  SetupDiGetDeviceInterfaceDetail(devInfoSet, &devInterfaceData, nullptr, 0, &reqSize, nullptr);
+  if (!reqSize)
+  {
+    SetupDiDestroyDeviceInfoList(devInfoSet);
+    return false;
+  }
+
+  infData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)calloc(1, reqSize);
+  infData->cbSize = sizeof(PSP_DEVICE_INTERFACE_DETAIL_DATA);
+  if (!SetupDiGetDeviceInterfaceDetail(devInfoSet, &devInterfaceData, infData, reqSize, nullptr, nullptr))
+  {
+    SetupDiDestroyDeviceInfoList(devInfoSet);
+    return false;
+  }
+
+  m_handle = CreateFile(infData->DevicePath, 0, 0, nullptr, OPEN_EXISTING, 0, 0);
+  if (m_handle == INVALID_HANDLE_VALUE)
+  {
+    SetupDiDestroyDeviceInfoList(devInfoSet);
+    return false;
+  }
+
+  SetupDiDestroyDeviceInfoList(devInfoSet);
+  return true;
+}
+
+bool CIVSHMEM::Open()
+{
+  IVSHMEM_SIZE size;
+  if (!DeviceIoControl(m_handle, IOCTL_IVSHMEM_REQUEST_SIZE, nullptr, 0, &size, sizeof(size), nullptr, nullptr))
+  {
+    printf("Failed to request ivshmem size\n");
+    return false;
+  }
+
+  IVSHMEM_MMAP_CONFIG config = {};
+  IVSHMEM_MMAP map           = {};
+
+  config.cacheMode = IVSHMEM_CACHE_WRITECOMBINED;
+  if (!DeviceIoControl(m_handle, IOCTL_IVSHMEM_REQUEST_MMAP, &config, sizeof(config), &map, sizeof(map), nullptr, nullptr))
+  {
+    printf("Failed to request ivshmem mmap\n");
+    return false;
+  }
+
+  m_size = (size_t)size;
+  m_mem  = map.ptr;
+
+  return true;
+}
+
+void CIVSHMEM::Close()
+{
+  if (m_mem == nullptr)
+    return;
+
+  if (!DeviceIoControl(m_handle, IOCTL_IVSHMEM_RELEASE_MMAP, nullptr, 0, nullptr, 0, nullptr, nullptr))
+  {
+    printf("Failed to release ivshmem mmap\n");
+    return;
+  }
+
+  m_size = 0;
+  m_mem  = nullptr;
+}

idd/LGIdd/CIVSHMEM.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <Windows.h>
+#include <SetupAPI.h>
+#include <vector>
+
+class CIVSHMEM
+{
+private:
+  struct IVSHMEMData
+  {
+    SP_DEVINFO_DATA devInfoData;
+    DWORD64         busAddr;
+  };
+
+  std::vector<struct IVSHMEMData> m_devices;
+  HANDLE m_handle = INVALID_HANDLE_VALUE;
+  size_t m_size;
+  void * m_mem = nullptr;
+
+public:
+  CIVSHMEM();
+  ~CIVSHMEM();
+
+  bool Init();
+  bool Open();
+  void Close();
+};
+

idd/LGIdd/CIndirectDeviceContext.cpp

@@ -3,6 +3,9 @@
 
 void CIndirectDeviceContext::InitAdapter()
 {
+  if (!m_ivshmem.Init() || !m_ivshmem.Open())
+    return;
+
   IDDCX_ADAPTER_CAPS caps = {};
   caps.Size = sizeof(caps);
 

idd/LGIdd/CIndirectDeviceContext.h

@@ -3,12 +3,14 @@
 #include <Windows.h>
 #include <wdf.h>
 #include <IddCx.h>
+#include "CIVSHMEM.h"
 
 class CIndirectDeviceContext
 {
 private:
   WDFDEVICE     m_wdfDevice;
   IDDCX_ADAPTER m_adapter = nullptr;
+  CIVSHMEM      m_ivshmem;
 
 public:
   CIndirectDeviceContext(_In_ WDFDEVICE wdfDevice) :

idd/LGIdd/LGIdd.vcxproj

@@ -40,6 +40,7 @@
   <ItemGroup>
     <ClCompile Include="CIndirectDeviceContext.cpp" />
     <ClCompile Include="CIndirectMonitorContext.cpp" />
+    <ClCompile Include="CIVSHMEM.cpp" />
     <ClCompile Include="CSwapChainProcessor.cpp" />
     <ClCompile Include="Device.cpp" />
     <ClCompile Include="Direct3DDevice.cpp" />
@@ -47,6 +48,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="CIndirectMonitorContext.h" />
+    <ClInclude Include="CIVSHMEM.h" />
     <ClInclude Include="CSwapChainProcessor.h" />
     <ClInclude Include="Device.h" />
     <ClInclude Include="Direct3DDevice.h" />
@@ -217,8 +219,8 @@
       <WppEnabled>true</WppEnabled>
       <WppRecorderEnabled>true</WppRecorderEnabled>
       <WppScanConfigurationData Condition="'%(ClCompile.ScanConfigurationData)' == ''">trace.h</WppScanConfigurationData>
-      <AdditionalOptions>/D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalOptions>/EHsc /D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;$(ProjectDir)..\..\vendor;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <AdditionalDependencies>%(AdditionalDependencies);OneCoreUAP.lib;avrt.lib</AdditionalDependencies>
@@ -229,8 +231,8 @@
       <WppEnabled>true</WppEnabled>
       <WppRecorderEnabled>true</WppRecorderEnabled>
       <WppScanConfigurationData Condition="'%(ClCompile.ScanConfigurationData)' == ''">trace.h</WppScanConfigurationData>
-      <AdditionalOptions>/D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalOptions>/EHsc /D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;$(ProjectDir)..\..\vendor;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <AdditionalDependencies>%(AdditionalDependencies);OneCoreUAP.lib;avrt.lib</AdditionalDependencies>
@@ -241,8 +243,8 @@
       <WppEnabled>true</WppEnabled>
       <WppRecorderEnabled>true</WppRecorderEnabled>
       <WppScanConfigurationData Condition="'%(ClCompile.ScanConfigurationData)' == ''">trace.h</WppScanConfigurationData>
-      <AdditionalOptions>/D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalOptions>/EHsc /D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;$(ProjectDir)..\..\vendor;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <AdditionalDependencies>%(AdditionalDependencies);OneCoreUAP.lib;avrt.lib</AdditionalDependencies>
@@ -253,8 +255,8 @@
       <WppEnabled>true</WppEnabled>
       <WppRecorderEnabled>true</WppRecorderEnabled>
       <WppScanConfigurationData Condition="'%(ClCompile.ScanConfigurationData)' == ''">trace.h</WppScanConfigurationData>
-      <AdditionalOptions>/D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalOptions>/EHsc /D_ATL_NO_WIN_SUPPORT /DIDDCX_VERSION_MAJOR=1 /DIDDCX_VERSION_MINOR=4 /IDDCX_MINIMUM_VERSION_REQUIRED=4 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalIncludeDirectories>$(ProjectDir)..\..\repos\LGMP\lgmp\include;$(ProjectDir)..\..\vendor;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <AdditionalDependencies>%(AdditionalDependencies);OneCoreUAP.lib;avrt.lib</AdditionalDependencies>

idd/LGIdd/LGIdd.vcxproj.filters

@@ -51,6 +51,9 @@
     <ClInclude Include="Direct3DDevice.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="CIVSHMEM.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Device.cpp">
@@ -71,5 +74,8 @@
     <ClCompile Include="Direct3DDevice.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="CIVSHMEM.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>