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audk/UnixPkg/UnixUgaDxe/UnixUgaScreen.c

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/*++
Copyright (c) 2006, 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:
UnixUgaScreen.c
Abstract:
This file produces the graphics abstration of UGA. It is called by
UnixUgaDriver.c file which deals with the EFI 1.1 driver model.
This file just does graphics.
--*/
#include "UnixUga.h"
EFI_UNIX_THUNK_PROTOCOL *mUnix;
EFI_EVENT mUgaScreenExitBootServicesEvent;
EFI_STATUS
UnixUgaStartWindow (
IN UGA_PRIVATE_DATA *Private,
IN UINT32 HorizontalResolution,
IN UINT32 VerticalResolution,
IN UINT32 ColorDepth,
IN UINT32 RefreshRate
);
VOID
EFIAPI
KillNtUgaThread (
IN EFI_EVENT Event,
IN VOID *Context
);
//
// UGA Protocol Member Functions
//
EFI_STATUS
EFIAPI
UnixUgaGetMode (
EFI_UGA_DRAW_PROTOCOL *This,
UINT32 *HorizontalResolution,
UINT32 *VerticalResolution,
UINT32 *ColorDepth,
UINT32 *RefreshRate
)
/*++
Routine Description:
Return the current video mode information.
Arguments:
This - Protocol instance pointer.
HorizontalResolution - Current video horizontal resolution in pixels
VerticalResolution - Current video Vertical resolution in pixels
ColorDepth - Current video color depth in bits per pixel
RefreshRate - Current video refresh rate in Hz.
Returns:
EFI_SUCCESS - Mode information returned.
EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
EFI_INVALID_PARAMETER - One of the input args was NULL.
--*/
// TODO: ADD IN/OUT description here
{
UGA_PRIVATE_DATA *Private;
Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
if (Private->HardwareNeedsStarting) {
return EFI_NOT_STARTED;
}
if ((HorizontalResolution == NULL) ||
(VerticalResolution == NULL) ||
(ColorDepth == NULL) ||
(RefreshRate == NULL)) {
return EFI_INVALID_PARAMETER;
}
*HorizontalResolution = Private->HorizontalResolution;
*VerticalResolution = Private->VerticalResolution;
*ColorDepth = Private->ColorDepth;
*RefreshRate = Private->RefreshRate;
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
UnixUgaSetMode (
EFI_UGA_DRAW_PROTOCOL *This,
UINT32 HorizontalResolution,
UINT32 VerticalResolution,
UINT32 ColorDepth,
UINT32 RefreshRate
)
/*++
Routine Description:
Return the current video mode information.
Arguments:
This - Protocol instance pointer.
HorizontalResolution - Current video horizontal resolution in pixels
VerticalResolution - Current video Vertical resolution in pixels
ColorDepth - Current video color depth in bits per pixel
RefreshRate - Current video refresh rate in Hz.
Returns:
EFI_SUCCESS - Mode information returned.
EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
EFI_INVALID_PARAMETER - One of the input args was NULL.
--*/
// TODO: EFI_DEVICE_ERROR - add return value to function comment
// TODO: EFI_DEVICE_ERROR - add return value to function comment
// TODO: ADD IN/OUT description here
{
EFI_STATUS Status;
UGA_PRIVATE_DATA *Private;
EFI_UGA_PIXEL Fill;
Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
if (Private->HardwareNeedsStarting) {
Status = UnixUgaStartWindow (
Private,
HorizontalResolution,
VerticalResolution,
ColorDepth,
RefreshRate
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
Private->HardwareNeedsStarting = FALSE;
}
Status = Private->UgaIo->UgaSize(Private->UgaIo,
HorizontalResolution,
VerticalResolution);
Private->HorizontalResolution = HorizontalResolution;
Private->VerticalResolution = VerticalResolution;
Private->ColorDepth = ColorDepth;
Private->RefreshRate = RefreshRate;
Fill.Red = 0x7f;
Fill.Green = 0x7F;
Fill.Blue = 0x7f;
This->Blt (
This,
&Fill,
EfiUgaVideoFill,
0,
0,
0,
0,
HorizontalResolution,
VerticalResolution,
HorizontalResolution * sizeof (EFI_UGA_PIXEL)
);
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
UnixUgaBlt (
IN EFI_UGA_DRAW_PROTOCOL *This,
IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL
IN EFI_UGA_BLT_OPERATION BltOperation,
IN UINTN SourceX,
IN UINTN SourceY,
IN UINTN DestinationX,
IN UINTN DestinationY,
IN UINTN Width,
IN UINTN Height,
IN UINTN Delta OPTIONAL
)
/*++
Routine Description:
Blt pixels from the rectangle (Width X Height) formed by the BltBuffer
onto the graphics screen starting a location (X, Y). (0, 0) is defined as
the upper left hand side of the screen. (X, Y) can be outside of the
current screen geometry and the BltBuffer will be cliped when it is
displayed. X and Y can be negative or positive. If Width or Height is
bigger than the current video screen the image will be clipped.
Arguments:
This - Protocol instance pointer.
X - X location on graphics screen.
Y - Y location on the graphics screen.
Width - Width of BltBuffer.
Height - Hight of BltBuffer
BltOperation - Operation to perform on BltBuffer and video memory
BltBuffer - Buffer containing data to blt into video buffer. This
buffer has a size of Width*Height*sizeof(EFI_UGA_PIXEL)
SourceX - If the BltOperation is a EfiCopyBlt this is the source
of the copy. For other BLT operations this argument is not
used.
SourceX - If the BltOperation is a EfiCopyBlt this is the source
of the copy. For other BLT operations this argument is not
used.
Returns:
EFI_SUCCESS - The palette is updated with PaletteArray.
EFI_INVALID_PARAMETER - BltOperation is not valid.
EFI_DEVICE_ERROR - A hardware error occured writting to the video
buffer.
--*/
// TODO: SourceY - add argument and description to function comment
// TODO: DestinationX - add argument and description to function comment
// TODO: DestinationY - add argument and description to function comment
// TODO: Delta - add argument and description to function comment
{
UGA_PRIVATE_DATA *Private;
EFI_TPL OriginalTPL;
EFI_STATUS Status;
Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
if ((BltOperation < 0) || (BltOperation >= EfiUgaBltMax)) {
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_UGA_PIXEL);
}
//
// 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);
Status = Private->UgaIo->UgaBlt (Private->UgaIo,
BltBuffer,
BltOperation,
SourceX, SourceY,
DestinationX, DestinationY,
Width, Height,
Delta);
gBS->RestoreTPL (OriginalTPL);
return Status;
}
//
// Construction and Destruction functions
//
EFI_STATUS
UnixUgaSupported (
IN EFI_UNIX_IO_PROTOCOL *UnixIo
)
/*++
Routine Description:
Arguments:
Returns:
None
--*/
// TODO: UnixIo - add argument and description to function comment
// TODO: EFI_UNSUPPORTED - add return value to function comment
// TODO: EFI_SUCCESS - add return value to function comment
{
//
// Check to see if the IO abstraction represents a device type we support.
//
// This would be replaced a check of PCI subsystem ID, etc.
//
if (!CompareGuid (UnixIo->TypeGuid, &gEfiUnixUgaGuid)) {
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
EFI_STATUS
UnixUgaStartWindow (
IN UGA_PRIVATE_DATA *Private,
IN UINT32 HorizontalResolution,
IN UINT32 VerticalResolution,
IN UINT32 ColorDepth,
IN UINT32 RefreshRate
)
/*++
Routine Description:
TODO: Add function description
Arguments:
Private - TODO: add argument description
HorizontalResolution - TODO: add argument description
VerticalResolution - TODO: add argument description
ColorDepth - TODO: add argument description
RefreshRate - TODO: add argument description
Returns:
TODO: add return values
--*/
{
EFI_STATUS Status;
mUnix = Private->UnixThunk;
Private->HorizontalResolution = HorizontalResolution;
Private->VerticalResolution = VerticalResolution;
//
// Register to be notified on exit boot services so we can destroy the window.
//
Status = gBS->CreateEvent (
EVT_SIGNAL_EXIT_BOOT_SERVICES,
TPL_CALLBACK,
KillNtUgaThread,
Private,
&mUgaScreenExitBootServicesEvent
);
Status = Private->UnixThunk->UgaCreate(&Private->UgaIo, Private->WindowName);
return Status;
}
EFI_STATUS
UnixUgaConstructor (
UGA_PRIVATE_DATA *Private
)
/*++
Routine Description:
Arguments:
Returns:
None
--*/
// TODO: Private - add argument and description to function comment
// TODO: EFI_SUCCESS - add return value to function comment
{
Private->UgaDraw.GetMode = UnixUgaGetMode;
Private->UgaDraw.SetMode = UnixUgaSetMode;
Private->UgaDraw.Blt = UnixUgaBlt;
Private->HardwareNeedsStarting = TRUE;
Private->UgaIo = NULL;
UnixUgaInitializeSimpleTextInForWindow (Private);
return EFI_SUCCESS;
}
EFI_STATUS
UnixUgaDestructor (
UGA_PRIVATE_DATA *Private
)
/*++
Routine Description:
Arguments:
Returns:
None
--*/
// TODO: Private - add argument and description to function comment
// TODO: EFI_SUCCESS - add return value to function comment
{
if (!Private->HardwareNeedsStarting) {
Private->UgaIo->UgaClose(Private->UgaIo);
Private->UgaIo = NULL;
}
return EFI_SUCCESS;
}
VOID
EFIAPI
KillNtUgaThread (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
This is the UGA screen's callback notification function for exit-boot-services.
All we do here is call UnixUgaDestructor().
Arguments:
Event - not used
Context - pointer to the Private structure.
Returns:
None.
--*/
{
EFI_STATUS Status;
Status = UnixUgaDestructor (Context);
}
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