Fix dxgkrnl loading on Vista->11 and ReactOS Longhorn - extend a little

DarkFire01 · Apr 13, 2023 · e38324b · e38324b
1 parent 8072bca
commit e38324b
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Showing 2 changed files with 51 additions and 7 deletions.
diff --git a/Dxgk.c b/Dxgk.c
@@ -45,7 +45,7 @@ DxgkInitialize(
 
 
     //TODO: build a IO Contro request
-
+    RDDM_SetupIoControlReq(DeviceObject);
 
     //TODO: windows seems to unload if the following above fails
     return Status;

diff --git a/Dxgk_manage.c b/Dxgk_manage.c
@@ -16,19 +16,63 @@ RDDM_LoadDxgkrnl(FILE_OBJECT **FileObject, DEVICE_OBJECT **DeviceObject)
     NTSTATUS Status;
     UNICODE_STRING DriverServiceName;
     UNICODE_STRING DriverSourceName;
-    PCWSTR DriverNameString = L"DXGKrnl"; /* Taken from windows Vista->11 registry */
-
-    /* Attempt to load DXGKRNL.SYS via the Service string */
-    RtlInitUnicodeString(&DriverServiceName, DriverNameString);
+   // DPRINT1("RDDM_LoadDxgkrnl: Attempting to load DXGKRNL\n");
+    RtlInitUnicodeString(&DriverServiceName, L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\DXGKrnl");
     Status = ZwLoadDriver(&DriverServiceName);
     if (Status != STATUS_SUCCESS)
     {
-        DPRINT1("Failed to load DXGKrnl From WDDM miniport driver\n");
+        DPRINT1("Failed to load DXGKrnl From WDDM miniport driver %d\n", Status);
         return Status;
     }
     RtlInitUnicodeString(&DriverSourceName, L"\\Device\\DxgKrnl"); /* Taken from windows Vista->11 registry */
 
     Status = IoGetDeviceObjectPointer(&DriverSourceName, 0xc0000000,
                                       FileObject, DeviceObject);
+ //   DPRINT1("RDDM_LoadDxgkrnl: Sucessfully Loaded DXGKRNL\n");
     return Status;
-}
+}
+
+
+NTSTATUS
+RDDM_DeviceIoControlConfiguration(ULONG IoControlCode,
+                                  DEVICE_OBJECT *DeviceObject,
+                                  PDXGKRNL_INTERFACE DriverInitData)
+{
+    NTSTATUS Status = 0;
+    PIRP Irp;
+    IO_STATUS_BLOCK IoStatusBlock = {0};
+    KEVENT Event = {0};
+
+    KeInitializeEvent(&Event, NotificationEvent, FALSE);
+    Irp = IoBuildDeviceIoControlRequest(0x230047, //TODO: name this, was gathered via windbg (FROM VISTA RTM)
+                                        DeviceObject,
+                                        NULL,
+                                        0,
+                                        DriverInitData,
+                                        sizeof(DXGKRNL_INTERFACE),
+                                        TRUE,
+                                        &Event,
+                                        &IoStatusBlock);
+
+    Status = IofCallDriver(DeviceObject, Irp);
+    if (Status < 0) {
+       // DPRINT1("Failed to setup dxgkrnl function pointers: %d\n", Status);
+        return Status;
+    }
+
+    return STATUS_SUCCESS;
+}
+
+VOID
+RDDM_SetupIoControlReq(DEVICE_OBJECT *DeviceObject)
+{
+    NTSTATUS Status;
+    DXGKRNL_INTERFACE DriverInitData; //TODO: This isn't correct
+    Status = RDDM_DeviceIoControlConfiguration(0x230047, //TODO: name this, was gathered via windbg (FROM VISTA RTM)
+                                               DeviceObject,
+                                               &DriverInitData);
+    //DPRINT1("RDDM_DeviceIoControlConfiguration left with Status %d\n", Status);
+    //DPRINT1("Miniport has detected DXGKRNL_INTERFACE size: 0x%X\n",DriverInitData.Size);
+    //DPRINT1("Miniport has detected WDDM version 0x%X\n",DriverInitData.Version);
+    //DPRINT1("Pointer to first function pointer is %X\n",DriverInitData.DxgkCbEvalAcpiMethod);
+}