Unix version of EFI emulator
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2182 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
tgingold
446
EdkUnixPkg/Dxe/UnixThunk/Bus/Uga/UnixUgaScreen.c
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446
EdkUnixPkg/Dxe/UnixThunk/Bus/Uga/UnixUgaScreen.c
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/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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UnixUgaScreen.c
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Abstract:
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This file produces the graphics abstration of UGA. It is called by
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UnixUgaDriver.c file which deals with the EFI 1.1 driver model.
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This file just does graphics.
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--*/
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#include "UnixUga.h"
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EFI_UNIX_THUNK_PROTOCOL *mUnix;
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static EFI_EVENT mUgaScreenExitBootServicesEvent;
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STATIC
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EFI_STATUS
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UnixUgaStartWindow (
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IN UGA_PRIVATE_DATA *Private,
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IN UINT32 HorizontalResolution,
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IN UINT32 VerticalResolution,
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IN UINT32 ColorDepth,
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IN UINT32 RefreshRate
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);
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STATIC
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VOID
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EFIAPI
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KillNtUgaThread (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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//
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// UGA Protocol Member Functions
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//
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EFI_STATUS
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EFIAPI
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UnixUgaGetMode (
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EFI_UGA_DRAW_PROTOCOL *This,
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UINT32 *HorizontalResolution,
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UINT32 *VerticalResolution,
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UINT32 *ColorDepth,
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UINT32 *RefreshRate
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)
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/*++
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Routine Description:
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Return the current video mode information.
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Arguments:
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This - Protocol instance pointer.
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HorizontalResolution - Current video horizontal resolution in pixels
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VerticalResolution - Current video Vertical resolution in pixels
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ColorDepth - Current video color depth in bits per pixel
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RefreshRate - Current video refresh rate in Hz.
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Returns:
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EFI_SUCCESS - Mode information returned.
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EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
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EFI_INVALID_PARAMETER - One of the input args was NULL.
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--*/
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// TODO: ADD IN/OUT description here
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{
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UGA_PRIVATE_DATA *Private;
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Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
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if (Private->HardwareNeedsStarting) {
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return EFI_NOT_STARTED;
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}
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if ((HorizontalResolution == NULL) ||
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(VerticalResolution == NULL) ||
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(ColorDepth == NULL) ||
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(RefreshRate == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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*HorizontalResolution = Private->HorizontalResolution;
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*VerticalResolution = Private->VerticalResolution;
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*ColorDepth = Private->ColorDepth;
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*RefreshRate = Private->RefreshRate;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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UnixUgaSetMode (
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EFI_UGA_DRAW_PROTOCOL *This,
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UINT32 HorizontalResolution,
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UINT32 VerticalResolution,
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UINT32 ColorDepth,
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UINT32 RefreshRate
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)
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/*++
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Routine Description:
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Return the current video mode information.
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Arguments:
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This - Protocol instance pointer.
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HorizontalResolution - Current video horizontal resolution in pixels
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VerticalResolution - Current video Vertical resolution in pixels
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ColorDepth - Current video color depth in bits per pixel
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RefreshRate - Current video refresh rate in Hz.
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Returns:
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EFI_SUCCESS - Mode information returned.
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EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()
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EFI_INVALID_PARAMETER - One of the input args was NULL.
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--*/
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// TODO: EFI_DEVICE_ERROR - add return value to function comment
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// TODO: EFI_DEVICE_ERROR - add return value to function comment
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// TODO: ADD IN/OUT description here
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{
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EFI_STATUS Status;
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UGA_PRIVATE_DATA *Private;
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EFI_UGA_PIXEL Fill;
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Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
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if (Private->HardwareNeedsStarting) {
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Status = UnixUgaStartWindow (
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Private,
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HorizontalResolution,
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VerticalResolution,
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ColorDepth,
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RefreshRate
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);
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if (EFI_ERROR (Status)) {
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return EFI_DEVICE_ERROR;
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}
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Private->HardwareNeedsStarting = FALSE;
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}
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Status = Private->UgaIo->UgaSize(Private->UgaIo,
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HorizontalResolution,
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VerticalResolution);
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Private->HorizontalResolution = HorizontalResolution;
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Private->VerticalResolution = VerticalResolution;
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Private->ColorDepth = ColorDepth;
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Private->RefreshRate = RefreshRate;
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Fill.Red = 0x00;
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Fill.Green = 0x00;
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Fill.Blue = 0x00;
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This->Blt (
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This,
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&Fill,
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EfiUgaVideoFill,
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0,
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0,
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0,
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0,
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HorizontalResolution,
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VerticalResolution,
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HorizontalResolution * sizeof (EFI_UGA_PIXEL)
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);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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UnixUgaBlt (
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IN EFI_UGA_DRAW_PROTOCOL *This,
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IN EFI_UGA_PIXEL *BltBuffer, OPTIONAL
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IN EFI_UGA_BLT_OPERATION BltOperation,
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IN UINTN SourceX,
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IN UINTN SourceY,
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IN UINTN DestinationX,
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IN UINTN DestinationY,
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IN UINTN Width,
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IN UINTN Height,
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IN UINTN Delta OPTIONAL
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)
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/*++
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Routine Description:
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Blt pixels from the rectangle (Width X Height) formed by the BltBuffer
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onto the graphics screen starting a location (X, Y). (0, 0) is defined as
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the upper left hand side of the screen. (X, Y) can be outside of the
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current screen geometry and the BltBuffer will be cliped when it is
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displayed. X and Y can be negative or positive. If Width or Height is
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bigger than the current video screen the image will be clipped.
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Arguments:
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This - Protocol instance pointer.
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X - X location on graphics screen.
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Y - Y location on the graphics screen.
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Width - Width of BltBuffer.
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Height - Hight of BltBuffer
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BltOperation - Operation to perform on BltBuffer and video memory
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BltBuffer - Buffer containing data to blt into video buffer. This
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buffer has a size of Width*Height*sizeof(EFI_UGA_PIXEL)
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SourceX - If the BltOperation is a EfiCopyBlt this is the source
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of the copy. For other BLT operations this argument is not
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used.
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SourceX - If the BltOperation is a EfiCopyBlt this is the source
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of the copy. For other BLT operations this argument is not
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used.
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Returns:
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EFI_SUCCESS - The palette is updated with PaletteArray.
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EFI_INVALID_PARAMETER - BltOperation is not valid.
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EFI_DEVICE_ERROR - A hardware error occured writting to the video
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buffer.
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--*/
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// TODO: SourceY - add argument and description to function comment
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// TODO: DestinationX - add argument and description to function comment
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// TODO: DestinationY - add argument and description to function comment
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// TODO: Delta - add argument and description to function comment
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{
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UGA_PRIVATE_DATA *Private;
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EFI_TPL OriginalTPL;
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EFI_STATUS Status;
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Private = UGA_DRAW_PRIVATE_DATA_FROM_THIS (This);
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if ((BltOperation < 0) || (BltOperation >= EfiUgaBltMax)) {
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return EFI_INVALID_PARAMETER;
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}
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if (Width == 0 || Height == 0) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// If Delta is zero, then the entire BltBuffer is being used, so Delta
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// is the number of bytes in each row of BltBuffer. Since BltBuffer is Width pixels size,
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// the number of bytes in each row can be computed.
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//
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if (Delta == 0) {
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Delta = Width * sizeof (EFI_UGA_PIXEL);
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}
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//
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// We have to raise to TPL Notify, so we make an atomic write the frame buffer.
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// We would not want a timer based event (Cursor, ...) to come in while we are
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// doing this operation.
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//
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OriginalTPL = gBS->RaiseTPL (EFI_TPL_NOTIFY);
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Status = Private->UgaIo->UgaBlt (Private->UgaIo,
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BltBuffer,
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BltOperation,
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SourceX, SourceY,
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DestinationX, DestinationY,
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Width, Height,
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Delta);
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gBS->RestoreTPL (OriginalTPL);
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return Status;
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}
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//
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// Construction and Destruction functions
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//
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EFI_STATUS
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UnixUgaSupported (
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IN EFI_UNIX_IO_PROTOCOL *UnixIo
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)
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/*++
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Routine Description:
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Arguments:
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Returns:
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None
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--*/
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// TODO: UnixIo - add argument and description to function comment
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// TODO: EFI_UNSUPPORTED - add return value to function comment
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// TODO: EFI_SUCCESS - add return value to function comment
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{
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//
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// Check to see if the IO abstraction represents a device type we support.
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//
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// This would be replaced a check of PCI subsystem ID, etc.
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//
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if (!CompareGuid (UnixIo->TypeGuid, &gEfiUnixUgaGuid)) {
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return EFI_UNSUPPORTED;
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}
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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UnixUgaStartWindow (
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IN UGA_PRIVATE_DATA *Private,
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IN UINT32 HorizontalResolution,
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IN UINT32 VerticalResolution,
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IN UINT32 ColorDepth,
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IN UINT32 RefreshRate
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Private - TODO: add argument description
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HorizontalResolution - TODO: add argument description
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VerticalResolution - TODO: add argument description
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ColorDepth - TODO: add argument description
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RefreshRate - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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{
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EFI_STATUS Status;
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mUnix = Private->UnixThunk;
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Private->HorizontalResolution = HorizontalResolution;
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Private->VerticalResolution = VerticalResolution;
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//
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// Register to be notified on exit boot services so we can destroy the window.
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//
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Status = gBS->CreateEvent (
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EFI_EVENT_SIGNAL_EXIT_BOOT_SERVICES,
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EFI_TPL_CALLBACK,
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KillNtUgaThread,
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Private,
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&mUgaScreenExitBootServicesEvent
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);
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Status = Private->UnixThunk->UgaCreate(&Private->UgaIo, Private->WindowName);
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return Status;
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}
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EFI_STATUS
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UnixUgaConstructor (
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UGA_PRIVATE_DATA *Private
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)
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/*++
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Routine Description:
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Arguments:
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Returns:
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None
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--*/
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// TODO: Private - add argument and description to function comment
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// TODO: EFI_SUCCESS - add return value to function comment
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{
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Private->UgaDraw.GetMode = UnixUgaGetMode;
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Private->UgaDraw.SetMode = UnixUgaSetMode;
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Private->UgaDraw.Blt = UnixUgaBlt;
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Private->HardwareNeedsStarting = TRUE;
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Private->UgaIo = NULL;
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UnixUgaInitializeSimpleTextInForWindow (Private);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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UnixUgaDestructor (
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UGA_PRIVATE_DATA *Private
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)
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/*++
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Routine Description:
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Arguments:
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Returns:
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None
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--*/
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// TODO: Private - add argument and description to function comment
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// TODO: EFI_SUCCESS - add return value to function comment
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{
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if (!Private->HardwareNeedsStarting) {
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Private->UgaIo->UgaClose(Private->UgaIo);
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Private->UgaIo = NULL;
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}
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return EFI_SUCCESS;
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}
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STATIC
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VOID
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EFIAPI
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KillNtUgaThread (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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/*++
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Routine Description:
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This is the UGA screen's callback notification function for exit-boot-services.
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All we do here is call UnixUgaDestructor().
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Arguments:
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Event - not used
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Context - pointer to the Private structure.
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Returns:
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None.
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--*/
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{
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EFI_STATUS Status;
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Status = UnixUgaDestructor (Context);
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}
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