VOID
VgaZeroVideoMemory(
PHW_DEVICE_EXTENSION HwDeviceExtension
)
/*++
Routine Description:
This routine zeros the first 256K on the VGA.
Arguments:
HwDeviceExtension - Pointer to the miniport driver's device extension.
Return Value:
None.
--*/
{
UCHAR temp;
//
// Map font buffer at A0000
//
VgaInterpretCmdStream(HwDeviceExtension, EnableA000Data);
//
// Enable all planes.
//
VideoPortWritePortUchar(HwDeviceExtension->IOAddress + SEQ_ADDRESS_PORT,
IND_MAP_MASK);
temp = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
SEQ_DATA_PORT) | (UCHAR)0x0F;
VideoPortWritePortUchar(HwDeviceExtension->IOAddress + SEQ_DATA_PORT,
temp);
//
// Zero the memory.
//
VideoPortZeroDeviceMemory(HwDeviceExtension->VideoMemoryAddress,
0xFFFF);
VgaInterpretCmdStream(HwDeviceExtension, DisableA000Color);
} // VgaZeroVideoMemory(...)
/*
* @implemented
*/
VOID
NTAPI
VidResetDisplay(IN BOOLEAN HalReset)
{
/* Clear the current position */
curr_x = 0;
curr_y = 0;
/* Clear the screen with HAL if we were asked to */
if (HalReset) HalResetDisplay();
/* Re-initialize the VGA Display */
VgaInterpretCmdStream(AT_Initialization);
/* Re-initialize the palette and fill the screen black */
InitializePalette();
VidSolidColorFill(0, 0, 639, 479, 0);
}
VP_STATUS
VgaSetMode(
PHW_DEVICE_EXTENSION HwDeviceExtension,
PVIDEO_MODE Mode,
ULONG ModeSize
)
/*++
Routine Description:
This routine sets the vga into the requested mode.
Arguments:
HwDeviceExtension - Pointer to the miniport driver's device extension.
Mode - Pointer to the structure containing the information about the
font to be set.
ModeSize - Length of the input buffer supplied by the user.
Return Value:
ERROR_INSUFFICIENT_BUFFER if the input buffer was not large enough
for the input data.
ERROR_INVALID_PARAMETER if the mode number is invalid.
NO_ERROR if the operation completed successfully.
--*/
{
PVIDEOMODE pRequestedMode;
VP_STATUS status;
#ifdef INT10_MODE_SET
VIDEO_X86_BIOS_ARGUMENTS biosArguments;
#endif
//
// Check if the size of the data in the input buffer is large enough.
//
if (ModeSize < sizeof(VIDEO_MODE)) {
return ERROR_INSUFFICIENT_BUFFER;
}
//
// Extract the clear memory bit.
//
if (Mode->RequestedMode & VIDEO_MODE_NO_ZERO_MEMORY) {
Mode->RequestedMode &= ~VIDEO_MODE_NO_ZERO_MEMORY;
} else {
VgaZeroVideoMemory(HwDeviceExtension);
}
//
// Check to see if we are requesting a valid mode
//
if ( (Mode->RequestedMode >= NumVideoModes) ||
(!ModesVGA[Mode->RequestedMode].ValidMode) ) {
return ERROR_INVALID_PARAMETER;
}
pRequestedMode = &ModesVGA[Mode->RequestedMode];
#ifdef INT10_MODE_SET
VideoPortZeroMemory(&biosArguments, sizeof(VIDEO_X86_BIOS_ARGUMENTS));
biosArguments.Ebx = pRequestedMode->Int10ModeNumber;
if (biosArguments.Ebx != 0) {
biosArguments.Eax = 0x6f05;
status = VideoPortInt10(HwDeviceExtension, &biosArguments);
if (status != NO_ERROR) {
return status;
}
}
#endif
//
// Call the interpreter
//
VgaInterpretCmdStream(HwDeviceExtension,
pRequestedMode->CmdStrings[HwDeviceExtension->AdapterType]);
#ifdef INT10_MODE_SET
{
UCHAR temp;
UCHAR dummy;
UCHAR bIsColor;
if (!(pRequestedMode->fbType & VIDEO_MODE_GRAPHICS)) {
//
// Fix to make sure we always set the colors in text mode to be
// intensity, and not flashing
// For this zero out the Mode Control Regsiter bit 3 (index 0x10
// of the Attribute controller).
//
if (VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
MISC_OUTPUT_REG_READ_PORT) & 0x01) {
bIsColor = TRUE;
} else {
bIsColor = FALSE;
}
if (bIsColor) {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_COLOR);
} else {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_MONO);
}
VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
ATT_ADDRESS_PORT, (0x10 | VIDEO_ENABLE));
temp = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
ATT_DATA_READ_PORT);
temp &= 0xF7;
if (bIsColor) {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_COLOR);
} else {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_MONO);
}
VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
ATT_ADDRESS_PORT, (0x10 | VIDEO_ENABLE));
VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
ATT_DATA_WRITE_PORT, temp);
}
}
#endif
//
// Update the location of the physical frame buffer within video memory.
//
HwDeviceExtension->PhysicalFrameLength =
MemoryMaps[pRequestedMode->MemMap].MaxSize;
HwDeviceExtension->PhysicalFrameBase.LowPart =
MemoryMaps[pRequestedMode->MemMap].Start;
//
// Store the new mode value.
//
HwDeviceExtension->ModeIndex = Mode->RequestedMode;
HwDeviceExtension->CurrentMode = pRequestedMode;
return NO_ERROR;
} //end VgaSetMode()
VP_STATUS
VgaSetMode(
PHW_DEVICE_EXTENSION HwDeviceExtension,
PVIDEO_MODE Mode,
ULONG ModeSize,
// eVb: 2.2 [SET MODE] - Add new output parameter for framebuffer update functionality
PULONG PhysPtrChange
// eVb: 2.2 [END]
)
/*++
Routine Description:
This routine sets the vga into the requested mode.
Arguments:
HwDeviceExtension - Pointer to the miniport driver's device extension.
Mode - Pointer to the structure containing the information about the
font to be set.
ModeSize - Length of the input buffer supplied by the user.
Return Value:
ERROR_INSUFFICIENT_BUFFER if the input buffer was not large enough
for the input data.
ERROR_INVALID_PARAMETER if the mode number is invalid.
NO_ERROR if the operation completed successfully.
--*/
{
PVIDEOMODE pRequestedMode;
VP_STATUS status;
ULONG RequestedModeNum;
// eVb: 2.3 [SET MODE] - Add new output parameter for framebuffer update functionality
*PhysPtrChange = FALSE;
// eVb: 2.3 [END]
//
// Check if the size of the data in the input buffer is large enough.
//
if (ModeSize < sizeof(VIDEO_MODE))
{
return ERROR_INSUFFICIENT_BUFFER;
}
//
// Extract the clear memory, and map linear bits.
//
RequestedModeNum = Mode->RequestedMode &
~(VIDEO_MODE_NO_ZERO_MEMORY | VIDEO_MODE_MAP_MEM_LINEAR);
if (!(Mode->RequestedMode & VIDEO_MODE_NO_ZERO_MEMORY))
{
#if defined(_X86_)
VgaZeroVideoMemory(HwDeviceExtension);
#endif
}
//
// Check to see if we are requesting a valid mode
//
// eVb: 2.4 [CIRRUS] - Remove Cirrus-specific check for valid mode
if ( (RequestedModeNum >= NumVideoModes) )
// eVb: 2.4 [END]
{
VideoDebugPrint((0, "Invalide Mode Number = %d!\n", RequestedModeNum));
return ERROR_INVALID_PARAMETER;
}
VideoDebugPrint((2, "Attempting to set mode %d\n",
RequestedModeNum));
// eVb: 2.5 [VBE] - Use dynamic VBE mode list instead of hard-coded VGA list
pRequestedMode = &VgaModeList[RequestedModeNum];
// eVb: 2.5 [END]
VideoDebugPrint((2, "Info on Requested Mode:\n"
"\tResolution: %dx%d\n",
pRequestedMode->hres,
pRequestedMode->vres ));
//
// VESA BIOS mode switch
//
// eVb: 2.6 [VBE] - VBE Mode Switch Support
status = VbeSetMode(HwDeviceExtension, pRequestedMode, PhysPtrChange);
if (status == ERROR_INVALID_FUNCTION)
{
//
// VGA mode switch
//
if (!pRequestedMode->CmdStream) return ERROR_INVALID_FUNCTION;
if (!VgaInterpretCmdStream(HwDeviceExtension, pRequestedMode->CmdStream)) return ERROR_INVALID_FUNCTION;
goto Cleanup;
}
else if (status != NO_ERROR) return status;
// eVb: 2.6 [END]
// eVb: 2.7 [MODE-X] - Windows VGA Miniport Supports Mode-X, we should too
//
// ModeX check
//
if (pRequestedMode->hres == 320)
{
VideoPortDebugPrint(0, "ModeX not support!!!\n");
return ERROR_INVALID_PARAMETER;
}
// eVb: 2.7 [END]
//
// Text mode check
//
if (!(pRequestedMode->fbType & VIDEO_MODE_GRAPHICS))
{
// eVb: 2.8 [TODO] - This code path is not implemented yet
VideoPortDebugPrint(0, "Text-mode not support!!!\n");
return ERROR_INVALID_PARAMETER;
// eVb: 2.8 [END]
}
Cleanup:
//
// Update the location of the physical frame buffer within video memory.
//
// eVb: 2.9 [VBE] - Linear and banked support is unified in VGA, unlike Cirrus
HwDeviceExtension->PhysicalVideoMemoryBase.LowPart = pRequestedMode->PhysBase;
HwDeviceExtension->PhysicalVideoMemoryLength = pRequestedMode->PhysSize;
HwDeviceExtension->PhysicalFrameLength =
pRequestedMode->FrameBufferSize;
HwDeviceExtension->PhysicalFrameOffset.LowPart =
pRequestedMode->FrameBufferBase;
// eVb: 2.9 [END]
//
// Store the new mode value.
//
HwDeviceExtension->CurrentMode = pRequestedMode;
HwDeviceExtension->ModeIndex = Mode->RequestedMode;
return NO_ERROR;
} //end VgaSetMode()
VP_STATUS
VgaSetMode(
PHW_DEVICE_EXTENSION HwDeviceExtension,
PVIDEO_MODE Mode,
ULONG ModeSize
)
/*++
Routine Description:
This routine sets the VGA into the requested mode.
Arguments:
HwDeviceExtension - Pointer to the miniport driver's device extension.
Mode - Pointer to the structure containing the information about the
font to be set.
ModeSize - Length of the input buffer supplied by the user.
Return Value:
ERROR_INSUFFICIENT_BUFFER if the input buffer was not large enough
for the input data.
ERROR_INVALID_PARAMETER if the mode number is invalid.
NO_ERROR if the operation completed successfully.
--*/
{
PVIDEOMODE pRequestedMode;
VP_STATUS status;
//
// Check if the size of the data in the input buffer is large enough.
//
if (ModeSize < sizeof(VIDEO_MODE)) {
return ERROR_INSUFFICIENT_BUFFER;
}
//
// Extract the clear memory bit.
//
if (Mode->RequestedMode & VIDEO_MODE_NO_ZERO_MEMORY) {
Mode->RequestedMode &= ~VIDEO_MODE_NO_ZERO_MEMORY;
} else {
VgaZeroVideoMemory(HwDeviceExtension);
}
//
// Check to see if we are requesting a valid mode
//
if ((Mode->RequestedMode >= NUM_VIDEO_MODES) ||
(!ModesVGA[Mode->RequestedMode].ValidMode)) {
VideoDebugPrint((0,"AVGA.sys: VGASetMode - ERROR_INVALID_PARAMETER.\n"));
return ERROR_INVALID_PARAMETER;
}
pRequestedMode = &ModesVGA[Mode->RequestedMode];
HwDeviceExtension->ModeIndex = Mode->RequestedMode;
//
// Store the new mode value.
//
HwDeviceExtension->CurrentMode = pRequestedMode;
#ifdef INT10_MODE_SET
{
VIDEO_X86_BIOS_ARGUMENTS biosArguments;
UCHAR temp;
UCHAR dummy;
UCHAR bIsColor;
/***********************************************************************
*** There appears to be a problem with some application ***
*** which reset the first 16 palette registers. ***
*** Since the palette is not reset when going to and ***
*** from text modes by doing a set mode (instead of ***
*** the hardware save restore), some colors might not ***
*** appear as expected in the text modes. The bios ***
*** calls seem to reload the palette so Andre Vachon ***
*** suggested that we implement an Int10 mode set for the ***
*** text modes. ***
*** To accomplish this, we need to hard code the first ***
*** three modes in modeset.h in the following switch. ***
*** If more text modes are added to modeset.h, their ***
*** index must be added to this switch statement. ***
***********************************************************************/
VideoPortZeroMemory(&biosArguments, sizeof(VIDEO_X86_BIOS_ARGUMENTS));
switch (Mode->RequestedMode) {
case 0: // 720x400
/***********************************************************************
*** Prepare the card for the VGA mode 3+ instead of the CGA mode 3 ***
***********************************************************************/
biosArguments.Eax = 0x1202; // Select Scan line number
biosArguments.Ebx = 0x0030; // to be 400 scan lines
status = VideoPortInt10(HwDeviceExtension, &biosArguments);
/***********************************************************************
*** Set the video mode to BIOS mode 3. ***
***********************************************************************/
VideoPortZeroMemory(&biosArguments, sizeof(VIDEO_X86_BIOS_ARGUMENTS));
biosArguments.Eax = 0x03; // bios mode 0x03
status = VideoPortInt10(HwDeviceExtension, &biosArguments);
break;
case 1: // 640x350
/***********************************************************************
*** Prepare the card for the EGA mode 3* instead of the CGA mode 3 ***
***********************************************************************/
biosArguments.Eax = 0x1201; // Select Scan line number
biosArguments.Ebx = 0x0030; // to be 350 scan lines
status = VideoPortInt10(HwDeviceExtension, &biosArguments);
/***********************************************************************
*** Set the video mode to BIOS mode 3. ***
***********************************************************************/
VideoPortZeroMemory(&biosArguments, sizeof(VIDEO_X86_BIOS_ARGUMENTS));
biosArguments.Eax = 0x03; // bios mode 0x03
status = VideoPortInt10(HwDeviceExtension, &biosArguments);
break;
default: // all graphics modes are
// handled by the default case
biosArguments.Eax = pRequestedMode->Int10ModeNumber;
status = VideoPortInt10(HwDeviceExtension, &biosArguments);
break;
}
if (status != NO_ERROR) {
return status;
}
//
// Fix to get 640x350 text mode
//
if (!(pRequestedMode->fbType & VIDEO_MODE_GRAPHICS)) {
// if ((pRequestedMode->hres == 640) &&
// (pRequestedMode->vres == 350)) {
//
// VgaInterpretCmdStream(HwDeviceExtension, VGA_TEXT_1);
//
// } else {
//
// Fix to make sure we always set the colors in text mode to be
// intensity, and not flashing
// For this zero out the Mode Control Regsiter bit 3 (index 0x10
// of the Attribute controller).
//
if (VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
MISC_OUTPUT_REG_READ_PORT) & 0x01) {
bIsColor = TRUE;
} else {
bIsColor = FALSE;
}
if (bIsColor) {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_COLOR);
} else {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_MONO);
}
VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
ATT_ADDRESS_PORT, (0x10 | VIDEO_ENABLE));
temp = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
ATT_DATA_READ_PORT);
temp &= 0xF7;
if (bIsColor) {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_COLOR);
} else {
dummy = VideoPortReadPortUchar(HwDeviceExtension->IOAddress +
INPUT_STATUS_1_MONO);
}
VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
ATT_ADDRESS_PORT, (0x10 | VIDEO_ENABLE));
VideoPortWritePortUchar(HwDeviceExtension->IOAddress +
ATT_DATA_WRITE_PORT, temp);
// }
}
}
#else
VgaInterpretCmdStream(HwDeviceExtension, pRequestedMode->CmdStrings);
#endif
//
// Update the location of the physical frame buffer within video memory.
//
HwDeviceExtension->PhysicalFrameLength =
MemoryMaps[pRequestedMode->MemMap].MaxSize;
HwDeviceExtension->PhysicalFrameBase.LowPart =
MemoryMaps[pRequestedMode->MemMap].Start;
return NO_ERROR;
} // end VgaSetMode()
VP_STATUS
VgaSetMode(
PHW_DEVICE_EXTENSION HwDeviceExtension,
PVIDEO_MODE Mode,
ULONG ModeSize
)
/*++
Routine Description:
This routine sets the VGA into the requested mode.
Arguments:
HwDeviceExtension - Pointer to the miniport driver's device extension.
Mode - Pointer to the structure containing the information about the
font to be set.
ModeSize - Length of the input buffer supplied by the user.
Return Value:
ERROR_INSUFFICIENT_BUFFER if the input buffer was not large enough
for the input data.
ERROR_INVALID_PARAMETER if the mode number is invalid.
NO_ERROR if the operation completed successfully.
--*/
{
PVIDEOMODE pRequestedMode;
PUSHORT pusCmdStream;
//
// Check if the size of the data in the input buffer is large enough.
//
if (ModeSize < sizeof(VIDEO_MODE)) {
return ERROR_INSUFFICIENT_BUFFER;
}
//
// Extract the clear memory bit.
//
if (Mode->RequestedMode & VIDEO_MODE_NO_ZERO_MEMORY) {
Mode->RequestedMode &= ~VIDEO_MODE_NO_ZERO_MEMORY;
} else {
VgaZeroVideoMemory(HwDeviceExtension);
}
//
// Check to see if we are requesting a vlid mode
//
if ( (Mode->RequestedMode >= NumVideoModes) ||
(!ModesVGA[Mode->RequestedMode].ValidMode) ) {
return ERROR_INVALID_PARAMETER;
}
pRequestedMode = &ModesVGA[Mode->RequestedMode];
//
// Set the mode using the table
//
if (HwDeviceExtension->AdapterMemorySize == 0x100000) {
VgaInterpretCmdStream(HwDeviceExtension,
pRequestedMode->CmdStrings1M);
//
// Support 256 color modes by stretching the scan lines.
//
if (pRequestedMode->pStretchScan1M) {
VgaInterpretCmdStream(HwDeviceExtension,
pRequestedMode->pStretchScan1M);
}
} else {
//
// if (HwDeviceExtension->AdapterMemorySize == 0x80000) {
//
VgaInterpretCmdStream(HwDeviceExtension,
pRequestedMode->CmdStrings512K);
//
// Support 256 color modes by stretching the scan lines.
//
if (pRequestedMode->pStretchScan512K) {
VgaInterpretCmdStream(HwDeviceExtension,
pRequestedMode->pStretchScan512K);
}
}
//
// Update the location of the physical frame buffer within video memory.
//
HwDeviceExtension->PhysicalFrameLength =
MemoryMaps[pRequestedMode->MemMap].MaxSize;
HwDeviceExtension->PhysicalFrameBase.LowPart =
MemoryMaps[pRequestedMode->MemMap].Start;
//
// Store the new mode value.
//
HwDeviceExtension->CurrentMode = pRequestedMode;
HwDeviceExtension->ModeIndex = Mode->RequestedMode;
return NO_ERROR;
} //end VgaSetMode()
/*
* @implemented
*/
BOOLEAN
NTAPI
VidInitialize(IN BOOLEAN SetMode)
{
ULONG_PTR Context = 0;
PHYSICAL_ADDRESS TranslatedAddress;
PHYSICAL_ADDRESS NullAddress = {{0, 0}}, VgaAddress;
ULONG AddressSpace = 1;
BOOLEAN Result;
ULONG_PTR Base;
/* Make sure that we have a bus translation function */
if (!HalFindBusAddressTranslation) return FALSE;
/* Get the VGA Register address */
Result = HalFindBusAddressTranslation(NullAddress,
&AddressSpace,
&TranslatedAddress,
&Context,
TRUE);
if (!Result) return FALSE;
/* Loop trying to find posssible VGA base addresses */
while (TRUE)
{
/* See if this is I/O Space, which we need to map */
if (!AddressSpace)
{
/* Map it */
Base = (ULONG_PTR)MmMapIoSpace(TranslatedAddress, 0x400, MmNonCached);
}
else
{
/* The base is the translated address, no need to map I/O space */
Base = TranslatedAddress.LowPart;
}
/* Try to see if this is VGA */
VgaRegisterBase = Base;
if (VgaIsPresent())
{
/* Translate the VGA Memory Address */
VgaAddress.LowPart = 0xA0000;
VgaAddress.HighPart = 0;
AddressSpace = 0;
Result = HalFindBusAddressTranslation(VgaAddress,
&AddressSpace,
&TranslatedAddress,
&Context,
FALSE);
if (Result) break;
/* Try to see if there's any other address */
Result = HalFindBusAddressTranslation(NullAddress,
&AddressSpace,
&TranslatedAddress,
&Context,
TRUE);
if (!Result) return FALSE;
}
else
{
/* It's not, so unmap the I/O space if we mapped it */
if (!AddressSpace) MmUnmapIoSpace((PVOID)VgaRegisterBase, 0x400);
}
}
/* Success! See if this is I/O Space, which we need to map */
if (!AddressSpace)
{
/* Map it */
Base = (ULONG_PTR)MmMapIoSpace(TranslatedAddress,
0x20000,
MmNonCached);
}
else
{
/* The base is the translated address, no need to map I/O space */
Base = TranslatedAddress.LowPart;
}
/* Set the VGA Memory Base */
VgaBase = Base;
/* Now check if we have to set the mode */
if (SetMode)
{
/* Reset the display */
HalResetDisplay();
curr_x = 0;
curr_y = 0;
/* Initialize it */
VgaInterpretCmdStream(AT_Initialization);
}
/* VGA is ready */
return TRUE;
}
