- Implemented IOCTL_VIDEO_MAP_VIDEO_MEMORY/IOCTL_VIDEO_UNMAP_VIDEO_MEMORY.

reactos/drivers/video/miniport/vga

diff -u -r1.2 -r1.3
--- vgamp.c	14 Mar 2004 19:44:02 -0000	1.2
+++ vgamp.c	16 Mar 2004 21:06:20 -0000	1.3
@@ -34,7 +34,8 @@

 */
 
 /*  Mandatory IoControl routines  */

-VOID  VGAMapVideoMemory(IN PVIDEO_MEMORY  RequestedAddress,

+VOID  VGAMapVideoMemory(IN PVOID DeviceExtension,
+			IN PVIDEO_MEMORY  RequestedAddress,

                         OUT PVIDEO_MEMORY_INFORMATION  MapInformation,
                         OUT PSTATUS_BLOCK  StatusBlock);
 VOID  VGAQueryAvailModes(OUT PVIDEO_MODE_INFORMATION  ReturnedModes,

@@ -53,7 +54,8 @@

 VOID  VGAShareVideoMemory(IN PVIDEO_SHARE_MEMORY  RequestedMemory,
                           OUT PVIDEO_MEMORY_INFORMATION  ReturnedMemory,
                           OUT PSTATUS_BLOCK  StatusBlock);

-VOID  VGAUnmapVideoMemory(IN PVIDEO_MEMORY  MemoryToUnmap,

+VOID  VGAUnmapVideoMemory(IN PVOID DeviceExtension,
+			  IN PVIDEO_MEMORY  MemoryToUnmap,

                           OUT PSTATUS_BLOCK  StatusBlock);
 VOID  VGAUnshareVideoMemory(IN PVIDEO_MEMORY  MemoryToUnshare,
                             OUT PSTATUS_BLOCK  StatusBlock);

@@ -219,7 +221,8 @@

   switch (RequestPacket->IoControlCode)
     {
     case  IOCTL_VIDEO_MAP_VIDEO_MEMORY:

-      VGAMapVideoMemory((PVIDEO_MEMORY) RequestPacket->InputBuffer,

+      VGAMapVideoMemory(DeviceExtension,
+			(PVIDEO_MEMORY) RequestPacket->InputBuffer,

                         (PVIDEO_MEMORY_INFORMATION) 
                           RequestPacket->OutputBuffer,
                         RequestPacket->StatusBlock);

@@ -261,7 +264,8 @@

       break;
       
     case  IOCTL_VIDEO_UNMAP_VIDEO_MEMORY:

-      VGAUnmapVideoMemory((PVIDEO_MEMORY) RequestPacket->InputBuffer,

+      VGAUnmapVideoMemory(DeviceExtension,
+			  (PVIDEO_MEMORY) RequestPacket->InputBuffer,

                           RequestPacket->StatusBlock);
       break;
       

@@ -389,11 +393,34 @@

 
 #endif
 

-VOID  VGAMapVideoMemory(IN PVIDEO_MEMORY  RequestedAddress,

+VOID  VGAMapVideoMemory(IN PVOID DeviceExtension,
+			IN PVIDEO_MEMORY  RequestedAddress,

                         OUT PVIDEO_MEMORY_INFORMATION  MapInformation,
                         OUT PSTATUS_BLOCK  StatusBlock)
 {

-  UNIMPLEMENTED;

+  ULONG ReturnedLength;
+  PVOID ReturnedAddress;
+  ULONG IoSpace;
+  PHYSICAL_ADDRESS FrameBufferBase;
+  ReturnedAddress = RequestedAddress->RequestedVirtualAddress;
+  ReturnedLength = 256 * 1024;
+  FrameBufferBase.QuadPart = 0xA0000;
+  IoSpace = VIDEO_MEMORY_SPACE_MEMORY;
+  StatusBlock->Status = VideoPortMapMemory(DeviceExtension,
+					   FrameBufferBase,
+					   &ReturnedLength,
+					   &IoSpace,
+					   &ReturnedAddress);
+  if (StatusBlock->Status != 0)
+    {
+      StatusBlock->Information = 0;
+      return;
+    }
+  MapInformation->VideoRamBase = MapInformation->FrameBufferBase =
+    ReturnedAddress;
+  MapInformation->VideoRamLength = MapInformation->FrameBufferLength =
+    ReturnedLength;
+  StatusBlock->Information = sizeof(VIDEO_MEMORY_INFORMATION);

 }
 
 VOID  VGAQueryAvailModes(OUT PVIDEO_MODE_INFORMATION  ReturnedModes,

@@ -474,10 +501,13 @@

   UNIMPLEMENTED;
 }
 

-VOID  VGAUnmapVideoMemory(IN PVIDEO_MEMORY  MemoryToUnmap,

+VOID  VGAUnmapVideoMemory(IN PVOID DeviceExtension,
+			  IN PVIDEO_MEMORY  MemoryToUnmap,

                           OUT PSTATUS_BLOCK  StatusBlock)
 {

-  UNIMPLEMENTED;

+  VideoPortUnmapMemory(DeviceExtension,
+		       MemoryToUnmap->RequestedVirtualAddress,
+		       0);

 }
 
 VOID  VGAUnshareVideoMemory(IN PVIDEO_MEMORY  MemoryToUnshare,