/* Called for IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY.
* Unmaps framebuffer previously mapped with IOCTL_VIDEO_SHARE_VIDEO_MEMORY.
*/
BOOLEAN VBoxMPUnshareVideoMemory(PVBOXMP_DEVEXT pExt, PVIDEO_SHARE_MEMORY pMem, PSTATUS_BLOCK pStatus)
{
LOGF_ENTER();
pStatus->Status = VideoPortUnmapMemory(pExt, pMem->RequestedVirtualAddress, pMem->ProcessHandle);
LOGF_LEAVE();
return TRUE;
}
/* Called for IOCTL_VIDEO_UNMAP_VIDEO_MEMORY.
* Unmaps previously mapped FrameBuffer and video RAM from caller's virtual adress space.
*/
BOOLEAN VBoxMPUnmapVideoMemory(PVBOXMP_DEVEXT pExt, PVIDEO_MEMORY VideoMemory, PSTATUS_BLOCK pStatus)
{
LOGF_ENTER();
HGSMIAreaClear(&pExt->areaDisplay);
pStatus->Status = VideoPortUnmapMemory(pExt, VideoMemory->RequestedVirtualAddress, NULL);
LOGF_LEAVE();
return TRUE;
}
BOOLEAN FASTCALL
XboxVmpUnmapVideoMemory(
PXBOXVMP_DEVICE_EXTENSION DeviceExtension,
PVIDEO_MEMORY VideoMemory,
PSTATUS_BLOCK StatusBlock)
{
VideoPortUnmapMemory(DeviceExtension, VideoMemory->RequestedVirtualAddress,
NULL);
return TRUE;
}
BOOLEAN VGAUnmapVideoMemory(IN PVOID DeviceExtension,
IN PVIDEO_MEMORY MemoryToUnmap,
OUT PSTATUS_BLOCK StatusBlock)
{
if (VideoPortUnmapMemory(DeviceExtension,
MemoryToUnmap->RequestedVirtualAddress,
0) == NO_ERROR)
return TRUE;
else
return FALSE;
}
void VBoxMPCmnUnmapAdapterMemory(PVBOXMP_COMMON pCommon, void **ppv)
{
LOGF_ENTER();
PVBOXMP_DEVEXT pPEXT = VBoxCommonToPrimaryExt(pCommon);
if (*ppv)
{
#ifndef VBOX_WITH_WDDM
VP_STATUS Status;
Status = VideoPortUnmapMemory(pPEXT, *ppv, NULL);
VBOXMP_WARN_VPS(Status);
#else
NTSTATUS ntStatus;
ntStatus = pPEXT->u.primary.DxgkInterface.DxgkCbUnmapMemory(pPEXT->u.primary.DxgkInterface.DeviceHandle, *ppv);
Assert(ntStatus == STATUS_SUCCESS);
#endif
}
*ppv = NULL;
LOGF_LEAVE();
}
BOOLEAN
DGXStartIO(
PVOID HwDeviceExtension,
PVIDEO_REQUEST_PACKET RequestPacket
)
/*++
Routine Description:
This routine is the main execution routine for the miniport driver. It
acceptss a Video Request Packet, performs the request, and then returns
with the appropriate status.
Arguments:
HwDeviceExtension - Supplies a pointer to the miniport's device extension.
RequestPacket - Pointer to the video request packet. This structure
contains all the parameters passed to the VideoIoControl function.
Return Value:
--*/
{
PHW_DEVICE_EXTENSION hwDeviceExtension = HwDeviceExtension;
VP_STATUS status;
PVIDEO_MODE_INFORMATION modeInformation;
PVIDEO_MEMORY_INFORMATION memoryInformation;
ULONG inIoSpace, ulTemp;
PVIDEO_CLUT clutBuffer;
ULONG modeNumber;
PVIDEO_SHARE_MEMORY pShareMemory;
PVIDEO_SHARE_MEMORY_INFORMATION pShareMemoryInformation;
PHYSICAL_ADDRESS shareAddress;
PVOID virtualAddress;
ULONG sharedViewSize;
//
// Switch on the IoContolCode in the RequestPacket. It indicates which
// function must be performed by the driver.
//
switch (RequestPacket->IoControlCode) {
case IOCTL_VIDEO_SHARE_VIDEO_MEMORY:
VideoDebugPrint((2, "DGXStartIO - ShareVideoMemory\n"));
if ( (RequestPacket->OutputBufferLength < sizeof(VIDEO_SHARE_MEMORY_INFORMATION)) ||
(RequestPacket->InputBufferLength < sizeof(VIDEO_MEMORY)) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
pShareMemory = RequestPacket->InputBuffer;
if ( (pShareMemory->ViewOffset > hwDeviceExtension->FrameLength) ||
((pShareMemory->ViewOffset + pShareMemory->ViewSize) >
hwDeviceExtension->FrameLength) ) {
status = ERROR_INVALID_PARAMETER;
break;
}
RequestPacket->StatusBlock->Information =
sizeof(VIDEO_SHARE_MEMORY_INFORMATION);
//
// Beware: the input buffer and the output buffer are the same
// buffer, and therefore data should not be copied from one to the
// other
//
virtualAddress = pShareMemory->ProcessHandle;
sharedViewSize = pShareMemory->ViewSize;
inIoSpace = 0;
//
// NOTE: we are ignoring ViewOffset
//
shareAddress.QuadPart =
hwDeviceExtension->PhysicalFrameAddress.QuadPart;
status = VideoPortMapMemory(hwDeviceExtension,
shareAddress,
&sharedViewSize,
&inIoSpace,
&virtualAddress);
pShareMemoryInformation = RequestPacket->OutputBuffer;
pShareMemoryInformation->SharedViewOffset = pShareMemory->ViewOffset;
pShareMemoryInformation->VirtualAddress = virtualAddress;
pShareMemoryInformation->SharedViewSize = sharedViewSize;
break;
case IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY:
VideoDebugPrint((2, "DGXStartIO - UnshareVideoMemory\n"));
if (RequestPacket->InputBufferLength < sizeof(VIDEO_SHARE_MEMORY)) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
pShareMemory = RequestPacket->InputBuffer;
status = VideoPortUnmapMemory(hwDeviceExtension,
pShareMemory->RequestedVirtualAddress,
pShareMemory->ProcessHandle);
break;
case IOCTL_VIDEO_MAP_VIDEO_MEMORY:
VideoDebugPrint((2, "DGXStartIO - MapVideoMemory\n"));
if ( (RequestPacket->OutputBufferLength < sizeof(VIDEO_MEMORY_INFORMATION)) ||
(RequestPacket->InputBufferLength < sizeof(VIDEO_MEMORY)) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
RequestPacket->StatusBlock->Information = sizeof(VIDEO_MEMORY_INFORMATION);
memoryInformation = RequestPacket->OutputBuffer;
memoryInformation->VideoRamBase = ((PVIDEO_MEMORY)
(RequestPacket->InputBuffer))->RequestedVirtualAddress;
memoryInformation->VideoRamLength = hwDeviceExtension->FrameLength;
inIoSpace = 0;
status = VideoPortMapMemory(hwDeviceExtension,
hwDeviceExtension->PhysicalFrameAddress,
&(memoryInformation->VideoRamLength),
&inIoSpace,
&(memoryInformation->VideoRamBase));
//
// The frame buffer and virtual memory and equivalent in this
// case.
//
memoryInformation->FrameBufferBase = memoryInformation->VideoRamBase;
memoryInformation->FrameBufferLength = memoryInformation->VideoRamLength;
break;
case IOCTL_VIDEO_UNMAP_VIDEO_MEMORY:
VideoDebugPrint((2, "DGXStartIO - UnMapVideoMemory\n"));
if (RequestPacket->InputBufferLength < sizeof(VIDEO_MEMORY)) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
status = VideoPortUnmapMemory(hwDeviceExtension,
((PVIDEO_MEMORY)
(RequestPacket->InputBuffer))->
RequestedVirtualAddress,
0);
}
break;
case IOCTL_VIDEO_QUERY_CURRENT_MODE:
VideoDebugPrint((2, "DGXStartIO - QueryCurrentModes\n"));
modeInformation = RequestPacket->OutputBuffer;
if (RequestPacket->OutputBufferLength < sizeof(VIDEO_MODE_INFORMATION)) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
RequestPacket->StatusBlock->Information = sizeof(VIDEO_MODE_INFORMATION);
*((PVIDEO_MODE_INFORMATION)RequestPacket->OutputBuffer) =
DGXModes[hwDeviceExtension->CurrentModeNumber].modeInformation;
status = NO_ERROR;
}
break;
case IOCTL_VIDEO_QUERY_AVAIL_MODES:
{
UCHAR i;
VideoDebugPrint((2, "DGXStartIO - QueryAvailableModes\n"));
if (RequestPacket->OutputBufferLength <
hwDeviceExtension->NumValidModes * sizeof(VIDEO_MODE_INFORMATION)) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
RequestPacket->StatusBlock->Information =
hwDeviceExtension->NumValidModes * sizeof(VIDEO_MODE_INFORMATION);
modeInformation = RequestPacket->OutputBuffer;
for (i = 0; i < NumDGXModes; i++) {
if (DGXModes[i].bValid) {
*modeInformation = DGXModes[i].modeInformation;
modeInformation++;
}
}
status = NO_ERROR;
}
break;
}
case IOCTL_VIDEO_QUERY_NUM_AVAIL_MODES:
VideoDebugPrint((2, "DGXStartIO - QueryNumAvailableModes\n"));
//
// Find out the size of the data to be put in the the buffer and
// return that in the status information (whether or not the
// information is there). If the buffer passed in is not large
// enough return an appropriate error code.
//
// WARNING: This must be changed to take into account which monitor
// is present on the machine.
//
if (RequestPacket->OutputBufferLength < sizeof(VIDEO_NUM_MODES)) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
RequestPacket->StatusBlock->Information = sizeof(VIDEO_NUM_MODES);
((PVIDEO_NUM_MODES)RequestPacket->OutputBuffer)->NumModes =
hwDeviceExtension->NumValidModes;
((PVIDEO_NUM_MODES)RequestPacket->OutputBuffer)->ModeInformationLength =
sizeof(VIDEO_MODE_INFORMATION);
status = NO_ERROR;
}
break;
case IOCTL_VIDEO_SET_CURRENT_MODE:
VideoDebugPrint((2, "DGXStartIO - SetCurrentMode\n"));
//
// verify data
// WARNING: Make sure it is one of the valid modes on the list
// calculated using the monitor information.
//
modeNumber = ((PVIDEO_MODE)(RequestPacket->InputBuffer))->RequestedMode;
if ( (modeNumber >= hwDeviceExtension->NumValidModes) ||
(!DGXModes[modeNumber].bValid) ) {
status = ERROR_INVALID_PARAMETER;
break;
}
DevInitDGX(hwDeviceExtension,
(PULONG)DGXModes[modeNumber].pVData,
DGXModes[modeNumber].Count);
if (DGXModes[modeNumber].modeInformation.BitsPerPlane == 16) {
DevSet16BppPalette(hwDeviceExtension);
}
hwDeviceExtension->CurrentModeNumber = modeNumber;
status = NO_ERROR;
break;
case IOCTL_VIDEO_SET_COLOR_REGISTERS:
VideoDebugPrint((2, "DGXStartIO - SetColorRegs\n"));
clutBuffer = RequestPacket->InputBuffer;
//
// Check if the size of the data in the input buffer is large enough.
//
if ( (RequestPacket->InputBufferLength < sizeof(VIDEO_CLUT) -
sizeof(ULONG)) ||
(RequestPacket->InputBufferLength < sizeof(VIDEO_CLUT) +
(sizeof(ULONG) * (clutBuffer->NumEntries - 1)) ) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
if (DGXModes[hwDeviceExtension->CurrentModeNumber].
modeInformation.BitsPerPlane == 8) {
DevSetPalette(hwDeviceExtension,
(PULONG)clutBuffer->LookupTable,
clutBuffer->FirstEntry,
clutBuffer->NumEntries);
status = NO_ERROR;
}
break;
case IOCTL_VIDEO_ENABLE_POINTER:
VideoDebugPrint((2, "DGXStartIO - EnablePointer\n"));
ulTemp = *hwDeviceExtension->pControlRegA;
ulTemp &= ~DAC_DISABLEPOINTER;
DacDelay();
*hwDeviceExtension->pControlRegA = ulTemp;
status = NO_ERROR;
break;
case IOCTL_VIDEO_DISABLE_POINTER:
VideoDebugPrint((2, "DGXStartIO - DisablePointer\n"));
DevPointerOff(hwDeviceExtension);
status = NO_ERROR;
break;
case IOCTL_VIDEO_SET_POINTER_POSITION:
{
PVIDEO_POINTER_POSITION pointerPosition;
VideoDebugPrint((2, "DGXStartIO - SetpointerPostion\n"));
pointerPosition = RequestPacket->InputBuffer;
//
// Check if the size of the data in the input buffer is large enough.
//
if (RequestPacket->InputBufferLength < sizeof(VIDEO_POINTER_POSITION)) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
hwDeviceExtension->ulPointerX = (ULONG)pointerPosition->Row;
hwDeviceExtension->ulPointerY = (ULONG)pointerPosition->Column;
DevSetPointerPos(hwDeviceExtension,
(ULONG)pointerPosition->Column,
(ULONG)pointerPosition->Row);
status = NO_ERROR;
}
break;
}
case IOCTL_VIDEO_QUERY_POINTER_POSITION:
{
PVIDEO_POINTER_POSITION pPointerPosition = RequestPacket->OutputBuffer;
VideoDebugPrint((2, "DGXStartIO - QuerypointerPostion\n"));
//
// Make sure the output buffer is big enough.
//
if (RequestPacket->OutputBufferLength < sizeof(VIDEO_POINTER_POSITION)) {
RequestPacket->StatusBlock->Information = 0;
return ERROR_INSUFFICIENT_BUFFER;
}
//
// Return the pointer position
//
RequestPacket->StatusBlock->Information = sizeof(VIDEO_POINTER_POSITION);
pPointerPosition->Row = (SHORT)hwDeviceExtension->ulPointerX;
pPointerPosition->Column = (SHORT)hwDeviceExtension->ulPointerY;
status = NO_ERROR;
break;
}
case IOCTL_VIDEO_SET_POINTER_ATTR:
{
PVIDEO_POINTER_ATTRIBUTES pointerAttributes;
USHORT *pHWCursorShape; // Temp Buffer
USHORT *pHWCursorAddr; // DAC buffer
ULONG iCount = 512;
VideoDebugPrint((2, "DGXStartIO - SetPointerAttributes\n"));
pointerAttributes = RequestPacket->InputBuffer;
//
// Check if the size of the data in the input buffer is large enough.
//
if (RequestPacket->InputBufferLength <
(sizeof(VIDEO_POINTER_ATTRIBUTES) + ((sizeof(UCHAR) *
(CURSOR_WIDTH/8) * CURSOR_HEIGHT) * 2))) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
//
// If the specified cursor width or height is not valid, then
// return an invalid parameter error.
//
if ((pointerAttributes->Width > CURSOR_WIDTH) ||
(pointerAttributes->Height > CURSOR_HEIGHT)) {
status = ERROR_INVALID_PARAMETER;
break;
}
//
// Try to copy the pointer to our buffer. When we copy it
// we convert it to our 2bpp format. If sucessfull, then
// copy it to the DAC and set the position.
//
if (!(pointerAttributes->Flags & VIDEO_MODE_ANIMATE_UPDATE)) {
DevPointerOff(hwDeviceExtension);
}
if (pointerAttributes->Flags & VIDEO_MODE_MONO_POINTER) {
if (CopyMonoCursor(hwDeviceExtension,
(PUCHAR)&pointerAttributes->Pixels[0])) {
pHWCursorAddr = (USHORT *)hwDeviceExtension->pHardWareCursorAddr;
pHWCursorShape = (USHORT *)&hwDeviceExtension->HardwareCursorShape[0];
while (iCount--) {
*pHWCursorAddr++ = *pHWCursorShape++;
pHWCursorAddr++;
DacDelay();
}
DevSetPointerPos(hwDeviceExtension,
(ULONG)pointerAttributes->Column,
(ULONG)pointerAttributes->Row);
status = NO_ERROR;
break;
}
}
//
// Something failed. Remove the current HW Cursor.
//
DevPointerOff(hwDeviceExtension);
status = ERROR_INVALID_PARAMETER;
break;
}
case IOCTL_VIDEO_QUERY_POINTER_CAPABILITIES:
{
PVIDEO_POINTER_CAPABILITIES pointerCaps = RequestPacket->OutputBuffer;
VideoDebugPrint((2, "DGXStartIO - QueryPointerCapabilities\n"));
if (RequestPacket->OutputBufferLength < sizeof(VIDEO_POINTER_CAPABILITIES)) {
RequestPacket->StatusBlock->Information = 0;
status = ERROR_INSUFFICIENT_BUFFER;
}
pointerCaps->Flags = VIDEO_MODE_ASYNC_POINTER | VIDEO_MODE_MONO_POINTER;
pointerCaps->MaxWidth = CURSOR_WIDTH;
pointerCaps->MaxHeight = CURSOR_HEIGHT;
pointerCaps->HWPtrBitmapStart = 0; // No VRAM storage for pointer
pointerCaps->HWPtrBitmapEnd = 0;
//
// Number of bytes we're returning.
//
RequestPacket->StatusBlock->Information = sizeof(VIDEO_POINTER_CAPABILITIES);
status = NO_ERROR;
break;
}
case IOCTL_VIDEO_RESET_DEVICE:
VideoDebugPrint((2, "DGXStartIO - RESET_DEVICE\n"));
DevDisableDGX(hwDeviceExtension);
status = NO_ERROR;
break;
//
// if we get here, an invalid IoControlCode was specified.
//
default:
VideoDebugPrint((1, "Fell through DGX startIO routine - invalid command\n"));
status = ERROR_INVALID_FUNCTION;
break;
}
RequestPacket->StatusBlock->Status = status;
return TRUE;
} // end DGXStartIO() z
/* Main I/O request handler routine. */
BOOLEAN HwVidStartIO( PVOID HwDevExt, PVIDEO_REQUEST_PACKET ReqPkt )
{
PHW_DEV_EXT pExt = HwDevExt;
VP_STATUS status = NO_ERROR;
PVIDEO_MODE_INFORMATION modeInfo;
PVIDEO_MEMORY vidMem;
PVIDEO_SHARE_MEMORY pShrMem;
PVOID virtualAddress;
ULONG inIoSpace;
ULONG modeNumber;
ULONG ulLen;
ULONG i;
VideoDebugPrint( (2, "videomp: HwVidStartIO: ") );
/* Process the VRP. Required requests are handled first. */
switch( ReqPkt->IoControlCode ) {
case IOCTL_VIDEO_QUERY_NUM_AVAIL_MODES:
{
PVIDEO_NUM_MODES numModes;
VideoDebugPrint( (2, "QUERY_NUM_AVAIL_MODES\n") );
if( ReqPkt->OutputBufferLength < sizeof( VIDEO_NUM_MODES ) ) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
ReqPkt->StatusBlock->Information = sizeof( VIDEO_NUM_MODES );
numModes = (PVIDEO_NUM_MODES)ReqPkt->OutputBuffer;
numModes->ModeInformationLength = sizeof( VIDEO_MODE_INFORMATION );
numModes->NumModes = pExt->NumValidModes;
}
break;
}
case IOCTL_VIDEO_QUERY_AVAIL_MODES:
VideoDebugPrint( (2, "QUERY_AVAIL_MODES\n") );
ulLen = pExt->NumValidModes * sizeof( VIDEO_MODE_INFORMATION );
if( ReqPkt->OutputBufferLength < ulLen ) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
ReqPkt->StatusBlock->Information = ulLen;
modeInfo = ReqPkt->OutputBuffer;
for( i = 0; i < ulAllModes; ++i ) {
if( VideoModes[i].bValid ) {
vmpFillModeInfo( modeInfo, VideoModes[i].HorzRes,
VideoModes[i].VertRes, VideoModes[i].Bpp );
modeInfo->ModeIndex = i; //VideoModes[i].modeInformation.ModeIndex;
modeInfo++;
}
}
}
break;
case IOCTL_VIDEO_QUERY_CURRENT_MODE:
VideoDebugPrint( (2, "QUERY_CURRENT_MODE\n") );
if( ReqPkt->OutputBufferLength < sizeof( VIDEO_MODE_INFORMATION ) ) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
ReqPkt->StatusBlock->Information = sizeof( VIDEO_MODE_INFORMATION );
modeInfo = ReqPkt->OutputBuffer;
vmpFillModeInfo( modeInfo,
VideoModes[pExt->CurrentModeNumber].HorzRes,
VideoModes[pExt->CurrentModeNumber].VertRes,
VideoModes[pExt->CurrentModeNumber].Bpp );
modeInfo->ModeIndex = pExt->CurrentModeNumber; //VideoModes[pExt->CurrentModeNumber].modeInformation.ModeIndex;
}
break;
case IOCTL_VIDEO_SET_CURRENT_MODE:
VideoDebugPrint( (2, "SET_CURRENT_MODE\n") );
/* Ensure the mode is valid. */
modeNumber = ((PVIDEO_MODE)(ReqPkt->InputBuffer))->RequestedMode;
if( (modeNumber > ulAllModes) || (!VideoModes[modeNumber].bValid) ) {
status = ERROR_INVALID_PARAMETER;
break;
}
BOXV_ext_mode_set( pExt, VideoModes[modeNumber].HorzRes,
VideoModes[modeNumber].VertRes, VideoModes[modeNumber].Bpp,
VideoModes[modeNumber].HorzRes, VideoModes[modeNumber].VertRes );
pExt->CurrentModeNumber = modeNumber;
break;
case IOCTL_VIDEO_RESET_DEVICE:
VideoDebugPrint( (2, "RESET_DEVICE\n") );
/* Not calling the following routine avoids some visual glitches. */
/* BOXV_ext_disable( pExt ); */
break;
case IOCTL_VIDEO_MAP_VIDEO_MEMORY:
{
PVIDEO_MEMORY_INFORMATION memInfo;
VideoDebugPrint( (2, "MAP_VIDEO_MEMORY\n") );
if( (ReqPkt->OutputBufferLength < sizeof( VIDEO_MEMORY_INFORMATION )) ||
(ReqPkt->InputBufferLength < sizeof( VIDEO_MEMORY )) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
ReqPkt->StatusBlock->Information = sizeof( VIDEO_MEMORY_INFORMATION );
vidMem = (PVIDEO_MEMORY)ReqPkt->InputBuffer;
memInfo = ReqPkt->OutputBuffer;
inIoSpace = FALSE;
memInfo->VideoRamBase = vidMem->RequestedVirtualAddress;
memInfo->VideoRamLength = pExt->FramebufLen;
status = VideoPortMapMemory( pExt, pExt->PhysicalFrameAddress,
&memInfo->VideoRamLength, &inIoSpace,
&memInfo->VideoRamBase );
/* The framebuffer covers the entire video memory. */
memInfo->FrameBufferBase = memInfo->VideoRamBase;
memInfo->FrameBufferLength = memInfo->VideoRamLength;
break;
}
case IOCTL_VIDEO_UNMAP_VIDEO_MEMORY:
VideoDebugPrint( (2, "UNMAP_VIDEO_MEMORY\n") );
if( ReqPkt->InputBufferLength < sizeof( VIDEO_MEMORY ) ) {
status = ERROR_INSUFFICIENT_BUFFER;
} else {
vidMem = (PVIDEO_MEMORY)ReqPkt->InputBuffer;
status = VideoPortUnmapMemory( pExt,
vidMem->RequestedVirtualAddress,
0 );
}
break;
/* The following request is required for palettized modes. */
case IOCTL_VIDEO_SET_COLOR_REGISTERS:
{
PVIDEO_CLUT clutBuffer;
VideoDebugPrint( (2, "SET_COLOR_REGISTERS\n") );
clutBuffer = ReqPkt->InputBuffer;
if( (ReqPkt->InputBufferLength < sizeof( VIDEO_CLUT ) - sizeof( ULONG )) ||
(ReqPkt->InputBufferLength < sizeof( VIDEO_CLUT ) +
(sizeof( ULONG ) * (clutBuffer->NumEntries - 1)) ) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
if( VideoModes[pExt->CurrentModeNumber].Bpp == 8 ) {
BOXV_dac_set( pExt, clutBuffer->FirstEntry, clutBuffer->NumEntries,
clutBuffer->LookupTable );
}
break;
}
/* The following requests are optional. */
case IOCTL_VIDEO_QUERY_POINTER_CAPABILITIES:
{
PVIDEO_POINTER_CAPABILITIES ptrCaps = ReqPkt->OutputBuffer;
VideoDebugPrint( (2, "QUERY_POINTER_CAPABILITIES\n") );
if( ReqPkt->OutputBufferLength < sizeof( VIDEO_POINTER_CAPABILITIES ) ) {
ReqPkt->StatusBlock->Information = 0;
status = ERROR_INSUFFICIENT_BUFFER;
}
ptrCaps->Flags = 0; /* Indicate no pointer support. */
ptrCaps->MaxWidth = ptrCaps->MaxHeight = 0;
/* Documentation and sample code disagree on whether no display
* memory for cursor is indicated by 0 or -1.
*/
ptrCaps->HWPtrBitmapStart = ptrCaps->HWPtrBitmapEnd = ~0;
ReqPkt->StatusBlock->Information = sizeof( VIDEO_POINTER_CAPABILITIES );
break;
}
/* The share/unshare IOCTLs are new for NT 3.51. */
case IOCTL_VIDEO_SHARE_VIDEO_MEMORY:
{
PVIDEO_SHARE_MEMORY_INFORMATION pShrMemInfo;
PHYSICAL_ADDRESS shareAddress;
ULONG sharedViewSize;
VideoDebugPrint( (2, "SHARE_VIDEO_MEMORY\n") );
if( (ReqPkt->OutputBufferLength < sizeof( VIDEO_SHARE_MEMORY_INFORMATION )) ||
(ReqPkt->InputBufferLength < sizeof( VIDEO_MEMORY )) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
pShrMem = ReqPkt->InputBuffer;
if( (pShrMem->ViewOffset > pExt->FramebufLen) ||
((pShrMem->ViewOffset + pShrMem->ViewSize) > pExt->FramebufLen) ) {
status = ERROR_INVALID_PARAMETER;
break;
}
ReqPkt->StatusBlock->Information = sizeof( VIDEO_SHARE_MEMORY_INFORMATION );
/* The input buffer is also the output buffer; remember the input. */
virtualAddress = pShrMem->ProcessHandle;
sharedViewSize = pShrMem->ViewSize;
inIoSpace = FALSE;
/* NB: ViewOffset is not being taken into account. */
shareAddress.QuadPart = pExt->PhysicalFrameAddress.QuadPart;
status = VideoPortMapMemory( pExt, shareAddress,
&sharedViewSize, &inIoSpace,
&virtualAddress );
pShrMemInfo = ReqPkt->OutputBuffer;
pShrMemInfo->SharedViewOffset = pShrMem->ViewOffset;
pShrMemInfo->VirtualAddress = virtualAddress;
pShrMemInfo->SharedViewSize = sharedViewSize;
break;
}
case IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY:
VideoDebugPrint( (2, "UNSHARE_VIDEO_MEMORY\n") );
if( ReqPkt->InputBufferLength < sizeof( VIDEO_SHARE_MEMORY ) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
pShrMem = ReqPkt->InputBuffer;
status = VideoPortUnmapMemory( pExt, pShrMem->RequestedVirtualAddress,
pShrMem->ProcessHandle );
break;
/* The child state IOCTLs are new for NT 5.0 (Windows 2000). */
case IOCTL_VIDEO_GET_CHILD_STATE:
{
PULONG pChildIndex;
PULONG pChildState;
VideoDebugPrint( (2, "GET_CHILD_STATE\n") );
if( ReqPkt->InputBufferLength < sizeof( ULONG ) ||
ReqPkt->OutputBufferLength < sizeof( ULONG ) ) {
status = ERROR_INSUFFICIENT_BUFFER;
break;
}
pChildIndex = ReqPkt->InputBuffer;
pChildState = ReqPkt->OutputBuffer;
/* Always say the child is active. */
*pChildState = VIDEO_CHILD_ACTIVE;
break;
}
/* Any other request is invalid and fails. */
default:
VideoDebugPrint( (1, "Unhandled IoControlCode %08x!\n", ReqPkt->IoControlCode) );
status = ERROR_INVALID_FUNCTION;
break;
}
ReqPkt->StatusBlock->Status = status;
return( TRUE );
}