/*++
Copyright (c) 2006 - 2010 Intel Corporation. All rights reserved
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
GraphicsOutput.c
Abstract:
This file produces the graphics abstration of Graphics Output. It is called by
Gop.c file which deals with the EFI 1.1 driver model.
This file just does graphics.
--*/
#include "Gop.h"
#include "EDID.h"
//
// Local Function Prototypes
//
EFI_STATUS
InitializeGraphicsMode (
INTEL_PRIVATE_DATA *Private,
INTEL_VIDEO_MODES *ModeData
);
EFI_STATUS
WaitForVBlank (
INTEL_PRIVATE_DATA *Private,
UINT32 Timeout
);
EFI_STATUS
StartupGfxController (
INTEL_PRIVATE_DATA *Private
);
EFI_STATUS
ShutdownGfxController (
INTEL_PRIVATE_DATA *Private
);
EFI_STATUS
ConfigureGfxController (
INTEL_PRIVATE_DATA *Private,
INTEL_VIDEO_MODES *ModeData
);
EFI_STATUS
ClearScreen (
INTEL_PRIVATE_DATA *Private,
UINT32 Color
);
//
// Graphics Output Protocol Member Functions
//
EFI_STATUS
EFIAPI
GraphicsOutputQueryMode (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN UINT32 ModeNumber,
OUT UINTN *SizeOfInfo,
OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info
)
/*++
Routine Description:
Graphics Output protocol interface to get video mode
Arguments:
This - Protocol instance pointer.
ModeNumber - The mode number to return information on.
Info - Caller allocated buffer that returns information about ModeNumber.
SizeOfInfo - A pointer to the size, in bytes, of the Info buffer.
Returns:
EFI_SUCCESS - Mode information returned.
EFI_DEVICE_ERROR - A hardware error occurred trying to retrieve the video mode.
EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
EFI_INVALID_PARAMETER - One of the input args was NULL.
--*/
{
EFI_STATUS Status;
INTEL_PRIVATE_DATA *Private;
INTEL_GRAPHICS_OUTPUT_MODE_DATA *ModeData;
//
// Parameter checking
//
if (This == NULL || Info == NULL || SizeOfInfo == NULL || ModeNumber >= This->Mode->MaxMode) {
return EFI_INVALID_PARAMETER;
}
//
// return parameters stored in local tracking structure
// If someone changes the mode outside the GOP driver,
// then these values will return inaccurate values. These
// values should really be read directly from the registers.
// [bugbug]
//
Status = gBS->AllocatePool (
EfiBootServicesData,
sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION),
(VOID**)&Info
);
if (EFI_ERROR (Status)) {
return Status;
}
*SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
Private = INTEL_PRIVATE_DATA_FROM_GRAPHICS_OUTPUT_THIS (This);
ModeData = &Private->ModeData[ModeNumber];
(*Info)->Version = 0;
(*Info)->HorizontalResolution = ModeData->HorizontalResolution;
(*Info)->VerticalResolution = ModeData->VerticalResolution;
(*Info)->PixelFormat = ModeData->PixelFormat;
(*Info)->PixelInformation = ModeData->PixelInformation;
(*Info)->PixelsPerScanLine = ModeData->PixelsPerScanLine;
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
GraphicsOutputSetMode (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL * This,
IN UINT32 ModeNumber
)
/*++
Routine Description:
Graphics Output protocol interface to set video mode
Arguments:
This - Protocol instance pointer.
ModeNumber - The mode number to be set.
Returns:
EFI_SUCCESS - Graphics mode was changed.
EFI_DEVICE_ERROR - The device had an error and could not complete the request.
EFI_UNSUPPORTED - ModeNumber is not supported by this device.
--*/
{
EFI_STATUS Status;
INTEL_PRIVATE_DATA *Private;
INTEL_GRAPHICS_OUTPUT_MODE_DATA *ModeData;
//
// Check the validity of the This pointer
//
if (This == NULL) {
return EFI_INVALID_PARAMETER;
}
if (ModeNumber >= This->Mode->MaxMode) {
return EFI_UNSUPPORTED;
}
if (ModeNumber == This->Mode->Mode) {
return EFI_SUCCESS;
}
//
// Get pointer to private data
//
Private = INTEL_PRIVATE_DATA_FROM_GRAPHICS_OUTPUT_THIS (This);
ModeData = &Private->ModeData[ModeNumber];
This->Mode->Mode = ModeNumber;
This->Mode->Info->Version = 0;
This->Mode->Info->HorizontalResolution = ModeData->HorizontalResolution;
This->Mode->Info->VerticalResolution = ModeData->VerticalResolution;
This->Mode->Info->PixelFormat = ModeData->PixelFormat;
This->Mode->Info->PixelInformation = ModeData->PixelInformation;
This->Mode->Info->PixelsPerScanLine = ModeData->PixelsPerScanLine;
This->Mode->SizeOfInfo = sizeof(EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
This->Mode->FrameBufferBase = ModeData->FrameBufferBase;
This->Mode->FrameBufferSize = ModeData->FrameBufferSize;
//
// The request is for a supported mode, so program
// up the graphics controller.
//
Status = InitializeGraphicsMode (Private, &mVideoModes[ModeData->ModeNumber]);
ClearScreen (Private, COLOR_BLACK);
return Status;
}
EFI_STATUS
EFIAPI
GraphicsOutputBitBlt (
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height,
IN UINTN Delta
)
/*++
Routine Description:
Graphics Output protocol instance to block transfer
Arguments:
This - Pointer to Graphics Output protocol instance
BltBuffer - The data to transfer to screen
BltOperation - The operation to perform
SourceX - The X coordinate of the source for BltOperation
SourceY - The Y coordinate of the source for BltOperation
DestinationX - The X coordinate of the destination for BltOperation
DestinationY - The Y coordinate of the destination for BltOperation
Width - The width of a rectangle in the blt rectangle in pixels
Height - The height of a rectangle in the blt rectangle in pixels
Delta - Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.
If a Delta of 0 is used, the entire BltBuffer will be operated on.
If a subrectangle of the BltBuffer is used, then Delta represents
the number of bytes in a row of the BltBuffer.
Returns:
EFI_INVALID_PARAMETER - Invalid parameter passed in
EFI_SUCCESS - Blt operation success
--*/
{
INTEL_PRIVATE_DATA *Private;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_TPL OriginalTPL;
UINT32 ScreenWidth;
UINT32 ScreenHeight;
UINT32 Row;
UINTN SrcBuf;
UINTN DestBuf;
EFI_STATUS Status;
INTEL_GRAPHICS_OUTPUT_MODE_DATA *ModeData;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *TmpBuf;
UINTN Index;
Status = EFI_SUCCESS;
Private = INTEL_PRIVATE_DATA_FROM_GRAPHICS_OUTPUT_THIS (This);
PciIo = Private->PciIo;
//
// Parameter checking
//
if (This == NULL || ((UINTN) BltOperation) >= EfiGraphicsOutputBltOperationMax) {
return EFI_INVALID_PARAMETER;
}
if (Width == 0 || Height == 0) {
return EFI_INVALID_PARAMETER;
}
//
// If Delta is zero, then the entire BltBuffer is being used, so Delta
// is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,
// the number of bytes in each row can be computed.
//
if (Delta == 0) {
Delta = Width * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
}
ModeData = &Private->ModeData[This->Mode->Mode];
//
// Some general calculations we will need for our operations
// Values are in pixels
//
ScreenWidth = ModeData->HorizontalResolution;
ScreenHeight = ModeData->VerticalResolution;
//
// Convert Screenwidth from Pixels to buffer offset (4bytes/pixel)
//
ScreenWidth *= sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
//
// We need to fill the Virtual Screen buffer with the blt data.
// The virtual screen is upside down, as the first row is the bottom row of
// the image.
//
//
// Make sure the SourceX, SourceY, DestinationX, DestinationY, Width, and Height parameters
// are valid for the operation and the current screen geometry.
//
//
if (BltOperation == EfiBltVideoToBltBuffer) {
//
// Video to BltBuffer: Source is Video, destination is BltBuffer
//
if (SourceY + Height > ModeData->VerticalResolution) {
return EFI_INVALID_PARAMETER;
}
if (SourceX + Width > ModeData->HorizontalResolution) {
return EFI_INVALID_PARAMETER;
}
} else {
//
// BltBuffer to Video: Source is BltBuffer, destination is Video
//
if (DestinationY + Height > ModeData->VerticalResolution) {
return EFI_INVALID_PARAMETER;
}
if (DestinationX + Width > ModeData->HorizontalResolution) {
return EFI_INVALID_PARAMETER;
}
}
// We have to raise to TPL Notify, so we make an atomic write the frame buffer.
// We would not want a timer based event (Cursor, ...) to come in while we are
// doing this operation.
//
OriginalTPL = gBS->RaiseTPL (TPL_NOTIFY);
switch (BltOperation) {
case EfiBltVideoToBltBuffer:
//
// Set the memory locations of the source and destination buffer
//
DestBuf = DestinationY * Delta + (DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)) + (UINTN) BltBuffer;
//
// Copy the video screen a scann line at a time to the blt buffer.
//
for (Row = 0; Row < Height; Row++) {
PciIo->Mem.Read (
PciIo,
EfiPciIoWidthUint32,
GMADR_BAR_INDEX,
(Row + SourceY) * ScreenWidth + (SourceX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)),
Width,
(VOID *) (UINTN) (DestBuf + Row * Delta)
);
}
break;
case EfiBltVideoToVideo:
//
// use the 2D BLT engine to copy data within the IGD Gfx frame buffer
//
TmpBuf = AllocatePool(Width * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
for (Index = 0; Index < Width; Index ++) {
TmpBuf[Index] = *BltBuffer;
}
for (Row = 0; Row < Height; Row ++) {
PciIo->Mem.Read (
PciIo,
EfiPciIoWidthUint32,
GMADR_BAR_INDEX,
(((SourceY > DestinationY) ? Row :(Height - 1 - Row)) + SourceY) * ScreenWidth + (SourceX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)),
Width,
(VOID *)TmpBuf
);
PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
GMADR_BAR_INDEX,
(((SourceY > DestinationY) ? Row :(Height - 1 - Row)) + DestinationY) * ScreenWidth + (DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)),
Width,
(VOID *) TmpBuf
);
}
FreePool(TmpBuf);
break;
case EfiBltVideoFill:
//
// Get the color to use for the fill; it is the color of the first
// pixel in the bltbit buffer
// Assuming the bltbuffer is the same width as the screen
//
TmpBuf = AllocatePool(Width * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL));
for (Index = 0; Index < Width; Index ++) {
TmpBuf[Index] = *BltBuffer;
}
for (Row = 0; Row < Height; Row ++) {
PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
GMADR_BAR_INDEX,
(Row + DestinationY) * ScreenWidth + (DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)),
Width,
(VOID *) TmpBuf
);
}
FreePool(TmpBuf);
break;
case EfiBltBufferToVideo:
//
// Set the memory locations of the source and destination buffer.
// These will be the physical addresses to where we will write
// and read data from.
//
SrcBuf = SourceY * Delta + (SourceX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)) + (UINTN) BltBuffer;
//
// Copy the Blt buffer a row at a time.
//
for (Row = 0; Row < Height; Row++) {
PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
GMADR_BAR_INDEX,
(Row + DestinationY) * ScreenWidth + (DestinationX * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)),
Width,
(VOID *) (UINTN) (SrcBuf + Row * Delta)
);
}
break;
default:
Status = EFI_INVALID_PARAMETER;
break;
}
gBS->RestoreTPL (OriginalTPL);
return Status;
}
//
// Construction and Destruction functions
//
EFI_STATUS
GraphicsOutputConstructor (
INTEL_PRIVATE_DATA *Private
)
/*++
Routine Description:
This function acts like a C++ constructor that is called when the
the started routine is called. This function is allocates buffers,
GTT memory and initializes the gfx controller for the default mode.
Arguments:
Private - Pointer to the private data members
Returns:
EFI_SUCCESS - Successfully return
--*/
{
UINT32 Index;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_STATUS Status;
UINT32 Value;
PCI_TYPE00 Pci;
UINT32 EdidSize;
VALID_EDID_TIMING ValidEdidTiming;
EDID_TIMING TempTiming;
BOOLEAN TimingMatch;
UINT32 ValidModeCount;
UINT32 PreferMode;
INTEL_VIDEO_MODES *VideoMode;
INTEL_GRAPHICS_OUTPUT_MODE_DATA *ModeData;
PciIo = Private->PciIo;
ZeroMem (&ValidEdidTiming, sizeof (VALID_EDID_TIMING));
//
// Enable the PCI Device
//
Status = Private->PciIo->Attributes (
Private->PciIo,
EfiPciIoAttributeOperationEnable,
EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,
NULL
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Read the PCI Configuration Header from the PCI Device
//
Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint32, 0, sizeof (Pci) / sizeof (UINT32), &Pci);
if (EFI_ERROR (Status)) {
return Status;
}
// //
// // at this point, we have a physically contiguous frame buffer pointer &
// // a physically contiguous GTT buffer.
// // Initialize the GTT pointer in the GFX device and enable it.
// //
// Value = (UINT32) (Private->GTTBaseAddress.BaseAddress | 1);
// //
// // OR with 1 to enable GTT
// //
// Status = PciIo->Mem.Write (
// PciIo,
// EfiPciIoWidthUint32,
// MMADR_BAR_INDEX,
// PGTBL_CTL,
// 1,
// &Value
// );
//
// Now initialize the memory pages of the gfx GTT table with our allocated
// memory. Initialize all GTT entries to good RAM locations. This is done
// by initializing every GTT page to the first frame buffer page. All GTT
// entries must point to valid RAM locations.
//
Value = (UINT32)((Private->AllocatedMemory.BaseAddress & 0xFFFFF000) | 1);
for (Index = 0; Index < (GTT_ALLOC_SIZE >> 2); Index++) {
PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
GTTADR_BAR_INDEX,
Index * 4,
1,
&Value
);
}
//
// Initialize GTT entries with frame buffer memory. This will get the
// GTT pointing to the true frame buffer and enable access through the
// GMADR BAR.
//
for (Index = 0; Index < Private->AllocatedMemory.Pages; Index++) {
Value = (UINT32) (((Private->AllocatedMemory.BaseAddress & 0xFFFFF000) + (Index << 12)) | 1);
PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
GTTADR_BAR_INDEX,
Index * 4,
1,
&Value
);
}
//
// setup EDID information
//
Private->EdidDiscovered.Edid = NULL;
Private->EdidDiscovered.SizeOfEdid = 0;
Private->EdidActive.Edid = NULL;
Private->EdidActive.SizeOfEdid = 0;
Status = ReadEDID (PciIo, (VOID**)&Private->EdidDiscovered.Edid, &EdidSize);
if (!EFI_ERROR (Status)) {
Status = ParseEDIDTable ((EDID_BLOCK *) Private->EdidDiscovered.Edid, EdidSize, &ValidEdidTiming);
if (!EFI_ERROR (Status)) {
Private->EdidDiscovered.SizeOfEdid = EdidSize;
Private->EdidActive.SizeOfEdid = EdidSize;
Private->EdidActive.Edid = AllocateCopyPool (EdidSize, Private->EdidDiscovered.Edid);
if (Private->EdidActive.Edid == NULL) {
return EFI_OUT_OF_RESOURCES;
}
}
}
//
// Initialize the private mode data with the supported modes.
//
ValidModeCount = 0;
ModeData = &Private->ModeData[0];
VideoMode = &mVideoModes[0];
EdidSize = Private->EdidDiscovered.SizeOfEdid;
for (Index = 0; Index < NUM_SUPPORTED_MODES; Index++) {
TimingMatch = TRUE;
if (EdidSize != 0 && (ValidEdidTiming.ValidNumber > 0)) {
//
// EDID found, check whether match with video mode
//
TempTiming.HorizontalResolution = (UINT16) VideoMode->Width;
TempTiming.VerticalResolution = (UINT16) VideoMode->Height;
TempTiming.RefreshRate = (UINT16) VideoMode->RefreshRate;
if (SearchEdidTiming (&ValidEdidTiming, &TempTiming) != TRUE) {
TimingMatch = FALSE;
}
}
//
// Not export Mode 0x0 as GOP mode, this is not defined in spec.
//
if ((VideoMode->Width == 0) || (VideoMode->Height == 0)) {
TimingMatch = FALSE;
}
if (TimingMatch) {
ModeData->ModeNumber = Index;
ModeData->HorizontalResolution = VideoMode->Width;
ModeData->VerticalResolution = VideoMode->Height;
ModeData->RefreshRate = VideoMode->RefreshRate;
ModeData->PixelFormat = Private->PixelFormat;
ModeData->PixelInformation.RedMask = 0x00ff0000;
ModeData->PixelInformation.GreenMask = 0x0000ff00;
ModeData->PixelInformation.BlueMask = 0x000000ff;
ModeData->PixelInformation.ReservedMask = 0xff000000;
ModeData->PixelsPerScanLine = ModeData->HorizontalResolution;
if (ModeData->PixelFormat != PixelBltOnly) {
ModeData->FrameBufferBase = (EFI_PHYSICAL_ADDRESS) (UINTN) (Pci.Device.Bar[GMADR_BAR_INDEX] & 0xF0000000);
ModeData->FrameBufferSize = FB_SIZE;
} else {
ModeData->FrameBufferBase = 0;
ModeData->FrameBufferSize = 0;
}
ModeData ++;
ValidModeCount ++;
}
VideoMode ++;
}
if (ValidModeCount == 0) {
return EFI_UNSUPPORTED;
}
//
// Allocate buffer for Graphics Output Protocol mode information
//
Status = gBS->AllocatePool (
EfiBootServicesData,
sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE),
(VOID **) &Private->GraphicsOutput.Mode
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->AllocatePool (
EfiBootServicesData,
sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION),
(VOID **) &Private->GraphicsOutput.Mode->Info
);
if (EFI_ERROR (Status)) {
return Status;
}
Private->GraphicsOutput.Mode->MaxMode = ValidModeCount;
//
// Initialize the hardware with a prefer mode
//
PreferMode = 0;
ModeData = &Private->ModeData[0];
for (Index = 0; Index < ValidModeCount; Index++, ModeData++) {
if ((ModeData->HorizontalResolution == 800 && ModeData->VerticalResolution == 600)
|| (ModeData->HorizontalResolution == 1024 && ModeData->VerticalResolution == 768)
) {
PreferMode = Index;
break;
}
}
Private->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;
Private->GraphicsOutput.SetMode (&Private->GraphicsOutput, PreferMode);
return EFI_SUCCESS;
}
EFI_STATUS
GraphicsOutputDestructor (
INTEL_PRIVATE_DATA *Private
)
/*++
Routine Description:
Undo what was done in the Constructor.
Arguments:
Private - Pointer to the private data members
Returns:
EFI_SUCCESS - Successfully return
--*/
{
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_STATUS Status;
PciIo = Private->PciIo;
//
// First shut down the controller
//
Status = ShutdownGfxController (Private);
//
// Shutdown the hardware
//
Private->PciIo->Attributes (
Private->PciIo,
EfiPciIoAttributeOperationDisable,
EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,
NULL
);
//
// Free graphics output protocol occupied resource
//
if (Private->GraphicsOutput.Mode != NULL) {
if (Private->GraphicsOutput.Mode->Info != NULL) {
gBS->FreePool (Private->GraphicsOutput.Mode->Info);
}
gBS->FreePool (Private->GraphicsOutput.Mode);
}
//
// Free EDID protocol occupied resource
//
if (Private->EdidDiscovered.Edid != NULL) {
gBS->FreePool (Private->EdidDiscovered.Edid);
}
if (Private->EdidActive.Edid != NULL) {
gBS->FreePool (Private->EdidActive.Edid);
}
return EFI_SUCCESS;
}
EFI_STATUS
ClearScreen (
INTEL_PRIVATE_DATA *Private,
UINT32 Color
)
/*++
Routine Description:
This function paints the display area by writing Color to the
entire frame buffer. To clear the screen, BLACK is written
to the frame buffer.
Arguments:
Private - Pointer to the private data members
Color - Color used to fill the screen. For screen
clears, color is typically BLACK.
Returns:
EFI_SUCCESS if successful, else the status from the COLOR_BLT
function is returned.
--*/
{
EFI_STATUS Status;
INTEL_GRAPHICS_OUTPUT_MODE_DATA *ModeData;
ModeData = &Private->ModeData[Private->GraphicsOutput.Mode->Mode];
Status = Private->GraphicsOutput.Blt(
&Private->GraphicsOutput,
(VOID*)&Color,
EfiBltVideoFill,
0,
0,
0,
0,
ModeData->HorizontalResolution,
ModeData->VerticalResolution,
ModeData->HorizontalResolution * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
);
return Status;
}
EFI_STATUS
ShutdownGfxController (
INTEL_PRIVATE_DATA *Private
)
/*++
Routine Description:
Shut down GFX controller
Arguments:
Private - Pointer to the private data members
Returns:
EFI_SUCCESS - Successfully return
--*/
{
UINT32 Index;
UINT32 Value;
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
PciIo = Private->PciIo;
//
// ------------------------------------------------
// Issue shutdown sequence
// Done in two lines for readability and debugging
// purposes.
//
for (Index = 0; Index < mNUM_SHUTDOWN_ENTRIES; Index++) {
Value = mDISPLAY_SHUTDOWN[Index].Value;
Status = PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
mDISPLAY_SHUTDOWN[Index].RegisterAddress,
1,
&Value
);
if (mDISPLAY_SHUTDOWN[Index].DoubleBuffer) {
Status = WaitForVBlank (Private, VBLANK_TIMEOUT);
}
}
return EFI_SUCCESS;
}
EFI_STATUS
ConfigureGfxController (
INTEL_PRIVATE_DATA *Private,
INTEL_VIDEO_MODES *ModeData
)
/*++
Routine Description:
Config GFX controller
Arguments:
Private - Pointer to the private data members
ModeData - Video mode data buffer
Returns:
EFI_SUCCESS - Successfully return
--*/
{
UINT32 Index;
UINT32 Value;
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
Status = EFI_SUCCESS;
PciIo = Private->PciIo;
//
// -----------------------------------------------
// Set pipe timings, planes and DPLLs to desired mode values
// Loop thru all the entries in the configuration table.
//
for (Index = 0; Index < NUM_DS_ENTRIES; Index++) {
//
// Done in two lines for readability and debugging
// purposes.
//
Value = ModeData->VideoModeData[Index].Value;
Status = PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
ModeData->VideoModeData[Index].RegisterAddress,
1,
&Value
);
//
// check if register program must wait for a vblank interval
// to occur for the register program to take effect..
//
if (ModeData->VideoModeData[Index].DoubleBuffer) {
Status = WaitForVBlank (Private, VBLANK_TIMEOUT);
}
}
return Status;
}
EFI_STATUS
StartupGfxController (
INTEL_PRIVATE_DATA *Private
)
/*++
Routine Description:
Startup GFX controller
Arguments:
Private - Pointer to the private data members
Returns:
EFI_SUCCESS - Successfully return
--*/
{
UINT32 Index;
UINT32 Value;
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
Status = EFI_SUCCESS;
PciIo = Private->PciIo;
//
// ------------------------------------------------
// Issue startup sequence
// Loop thru all the entries in the startup table.
//
for (Index = 0; Index < mNUM_STARTUP_ENTRIES; Index++) {
//
// Done in two lines for readability and debugging
// purposes.
//
Value = mDISPLAY_STARTUP[Index].Value;
Status = PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
mDISPLAY_STARTUP[Index].RegisterAddress,
1,
&Value
);
//
// check if register program must wait for a vblank interval
// to occur for the register program to take effect..
//
if (mDISPLAY_STARTUP[Index].DoubleBuffer) {
Status = WaitForVBlank (Private, VBLANK_TIMEOUT);
}
}
return Status;
}
EFI_STATUS
WaitForVBlank (
INTEL_PRIVATE_DATA *Private,
UINT32 Timeout
)
/*++
Routine Description:
Wait for VBlank
Arguments:
Private - Pointer to the private data members
Timeout - Time out value
Returns:
EFI_SUCCESS - Successfully return
--*/
{
EFI_STATUS Status;
UINT32 Value;
UINT32 Index;
EFI_PCI_IO_PROTOCOL *PciIo;
Status = EFI_SUCCESS;
Index = 0;
PciIo = Private->PciIo;
//
// Read the bit and clear the status bit by writing a 1 to the VBLANK bit
//
Status = PciIo->Mem.Read (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
PIPEASTAT,
1,
&Value
);
Value |= VBLANK_MASK;
//
// set the VBlank status but causing it to clear
//
Status = PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
PIPEASTAT,
1,
&Value
);
Status = PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
PIPEASTAT,
1,
&Value
);
//
// Loop Timeout # of times, waiting for VBLANK_STATUS bit to become set
//
while (Index < Timeout) {
Status = PciIo->Mem.Read (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
PIPEASTAT,
1,
&Value
);
Index++;
//
// increment our loop counter
//
// If the VBLANK_MASK is set, a VBLANK has occurred and
// we are done here.
//
if (Value & VBLANK_MASK) {
break;
}
}
//
// Check the loop counter against the requested Timeout value.
// if the time out was reached, return an error.
//
if (Index >= Timeout) {
Status = EFI_TIMEOUT;
}
return Status;
}
EFI_STATUS
ShutdownLVDS (
INTEL_PRIVATE_DATA *Private
)
/*++
Routine Description:
Shut down GFX controller
Arguments:
Private - Pointer to the BearLake private data members
Returns:
EFI_SUCCESS - Successfully return
--*/
{
UINT32 Index;
UINT32 Value;
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
PciIo = Private->PciIo;
//
// ------------------------------------------------
// Issue shutdown sequence
// Done in two lines for readability and debugging
// purposes.
//
for (Index = 0; TRUE; Index++) {
if (LVDS_SHUTDOWN[Index].RegisterAddress == 0) break;
Value = LVDS_SHUTDOWN[Index].Value;
Status = PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
LVDS_SHUTDOWN[Index].RegisterAddress,
1,
&Value
);
if (LVDS_SHUTDOWN[Index].DoubleBuffer) {
Status = WaitForVBlank (Private, VBLANK_TIMEOUT);
}
}
return EFI_SUCCESS;
}
EFI_STATUS StartLVDS (
INTEL_PRIVATE_DATA *Private,
INTEL_VIDEO_MODES *ModeData
)
{
UINT32 Index;
UINT32 Value;
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
Status = EFI_SUCCESS;
PciIo = Private->PciIo;
//
// -----------------------------------------------
// Set pipe timings, planes and DPLLs to desired mode values
// Loop thru all the entries in the configuration table.
//
for (Index = 0; TRUE; Index++) {
//
// Done in two lines for readability and debugging
// purposes.
//
if (ModeData->LVDSModeData[Index].RegisterAddress == 0) break;
Value = ModeData->LVDSModeData[Index].Value;
Status = PciIo->Mem.Write (
PciIo,
EfiPciIoWidthUint32,
MMADR_BAR_INDEX,
ModeData->LVDSModeData[Index].RegisterAddress,
1,
&Value
);
//
// check if register program must wait for a vblank interval
// to occur for the register program to take effect..
//
if (ModeData->LVDSModeData[Index].DoubleBuffer) {
Status = WaitForVBlank (Private, VBLANK_TIMEOUT);
}
}
return Status;
}
EFI_STATUS
InitializeGraphicsMode (
INTEL_PRIVATE_DATA *Private,
INTEL_VIDEO_MODES *ModeData
)
/*++
Routine Description:
Initialize graphics mode
Arguments:
Private - Pointer to the private data members
ModeData - Graphics mode data buffer
Returns:
EFI_SUCCESS - Successfully return
--*/
{
EFI_STATUS Status;
//
// Program the controller registers.
//
Status = ConfigureGfxController (Private, ModeData);
//
// If the driver is already started, then the GTT is setup and
// we should execute the h/w start-up sequence; otherwise, the
// constructor will call StartupGfxController itself. The
// controller will hang if the startup sequence is executed
// befor the GTT is setup (ie, we need this following check!)
//
Status = StartupGfxController (Private);
ShutdownLVDS(Private);
StartLVDS(Private, ModeData);
return Status;
}
VOID
EFIAPI
ClearGfxController (
IN EFI_EVENT Event,
IN VOID *Context
)
{
INTEL_PRIVATE_DATA *Private;
EFI_STATUS Status;
Private = (INTEL_PRIVATE_DATA *) Context;
Status = ShutdownGfxController (Private);
//
// Shutdown the hardware
//
Private->PciIo->Attributes (
Private->PciIo,
EfiPciIoAttributeOperationDisable,
EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,
NULL
);
return ;
}