410 lines
12 KiB
C
410 lines
12 KiB
C
/*++ @file
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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Module Name:
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EmuGopScreen.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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EmuGopDriver.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 "Gop.h"
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EFI_EVENT mGopScreenExitBootServicesEvent;
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GOP_MODE_DATA mGopModeData[] = {
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{ 800, 600, 0, 0 },
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{ 640, 480, 0, 0 },
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{ 720, 400, 0, 0 },
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{1024, 768, 0, 0 },
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{1280, 1024, 0, 0 }
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};
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/**
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Returns information for an available graphics mode that the graphics device
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and the set of active video output devices supports.
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@param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
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@param ModeNumber The mode number to return information on.
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@param SizeOfInfo A pointer to the size, in bytes, of the Info buffer.
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@param Info A pointer to callee allocated buffer that returns information about ModeNumber.
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@retval EFI_SUCCESS Mode information returned.
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@retval EFI_BUFFER_TOO_SMALL The Info buffer was too small.
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@retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode.
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@retval EFI_NOT_STARTED Video display is not initialized. Call SetMode ()
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@retval EFI_INVALID_PARAMETER One of the input args was NULL.
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**/
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EFI_STATUS
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EFIAPI
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EmuGopQuerytMode (
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN UINT32 ModeNumber,
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OUT UINTN *SizeOfInfo,
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OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info
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)
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{
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GOP_PRIVATE_DATA *Private;
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Private = GOP_PRIVATE_DATA_FROM_THIS (This);
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if (Info == NULL || SizeOfInfo == NULL || (UINTN) ModeNumber >= This->Mode->MaxMode) {
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return EFI_INVALID_PARAMETER;
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}
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*Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
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if (*Info == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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*SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
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(*Info)->Version = 0;
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(*Info)->HorizontalResolution = Private->ModeData[ModeNumber].HorizontalResolution;
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(*Info)->VerticalResolution = Private->ModeData[ModeNumber].VerticalResolution;
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(*Info)->PixelFormat = PixelBltOnly;
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(*Info)->PixelsPerScanLine = (*Info)->HorizontalResolution;
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return EFI_SUCCESS;
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}
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/**
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Set the video device into the specified mode and clears the visible portions of
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the output display to black.
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@param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
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@param ModeNumber Abstraction that defines the current video mode.
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@retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected.
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@retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
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@retval EFI_UNSUPPORTED ModeNumber is not supported by this device.
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**/
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EFI_STATUS
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EFIAPI
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EmuGopSetMode (
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN UINT32 ModeNumber
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)
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{
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EFI_STATUS Status;
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GOP_PRIVATE_DATA *Private;
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GOP_MODE_DATA *ModeData;
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL Fill;
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Private = GOP_PRIVATE_DATA_FROM_THIS (This);
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if (ModeNumber >= This->Mode->MaxMode) {
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return EFI_UNSUPPORTED;
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}
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ModeData = &Private->ModeData[ModeNumber];
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This->Mode->Mode = ModeNumber;
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Private->GraphicsOutput.Mode->Info->HorizontalResolution = ModeData->HorizontalResolution;
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Private->GraphicsOutput.Mode->Info->VerticalResolution = ModeData->VerticalResolution;
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Private->GraphicsOutput.Mode->Info->PixelsPerScanLine = ModeData->HorizontalResolution;
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if (Private->HardwareNeedsStarting) {
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Status = EmuGopStartWindow (
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Private,
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ModeData->HorizontalResolution,
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ModeData->VerticalResolution,
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ModeData->ColorDepth,
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ModeData->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->EmuGraphicsWindow->Size(
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Private->EmuGraphicsWindow,
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ModeData->HorizontalResolution,
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ModeData->VerticalResolution
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);
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Fill.Red = 0;
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Fill.Green = 0;
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Fill.Blue = 0;
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This->Blt (
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This,
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&Fill,
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EfiBltVideoFill,
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0,
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0,
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0,
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0,
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ModeData->HorizontalResolution,
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ModeData->VerticalResolution,
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ModeData->HorizontalResolution * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
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);
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return EFI_SUCCESS;
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}
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/**
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Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.
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@param This Protocol instance pointer.
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@param BltBuffer Buffer containing data to blit into video buffer. This
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buffer has a size of Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
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@param BltOperation Operation to perform on BlitBuffer and video memory
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@param SourceX X coordinate of source for the BltBuffer.
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@param SourceY Y coordinate of source for the BltBuffer.
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@param DestinationX X coordinate of destination for the BltBuffer.
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@param DestinationY Y coordinate of destination for the BltBuffer.
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@param Width Width of rectangle in BltBuffer in pixels.
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@param Height Hight of rectangle in BltBuffer in pixels.
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@param Delta OPTIONAL
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@retval EFI_SUCCESS The Blt operation completed.
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@retval EFI_INVALID_PARAMETER BltOperation is not valid.
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@retval EFI_DEVICE_ERROR A hardware error occured writting to the video buffer.
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**/
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EFI_STATUS
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EFIAPI
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EmuGopBlt (
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IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
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IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
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IN EFI_GRAPHICS_OUTPUT_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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GOP_PRIVATE_DATA *Private;
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EFI_TPL OriginalTPL;
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EFI_STATUS Status;
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EMU_GRAPHICS_WINDOWS__BLT_ARGS GopBltArgs;
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Private = GOP_PRIVATE_DATA_FROM_THIS (This);
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if ((UINT32)BltOperation >= EfiGraphicsOutputBltOperationMax) {
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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 (TPL_NOTIFY);
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//
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// Pack UGA Draw protocol parameters to EMU_GRAPHICS_WINDOWS__BLT_ARGS structure to adapt to
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// GopBlt() API of Unix UGA IO protocol.
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//
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GopBltArgs.DestinationX = DestinationX;
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GopBltArgs.DestinationY = DestinationY;
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GopBltArgs.Height = Height;
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GopBltArgs.Width = Width;
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GopBltArgs.SourceX = SourceX;
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GopBltArgs.SourceY = SourceY;
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GopBltArgs.Delta = Delta;
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Status = Private->EmuGraphicsWindow->Blt (
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Private->EmuGraphicsWindow,
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(EFI_UGA_PIXEL *)BltBuffer,
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(EFI_UGA_BLT_OPERATION)BltOperation,
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&GopBltArgs
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);
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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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EmuGopSupported (
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IN EMU_IO_THUNK_PROTOCOL *EmuIoThunk
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)
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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 (EmuIoThunk->Protocol, &gEmuGraphicsWindowProtocolGuid)) {
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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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EFI_STATUS
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EmuGopStartWindow (
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IN GOP_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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EFI_STATUS Status;
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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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EVT_SIGNAL_EXIT_BOOT_SERVICES,
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TPL_CALLBACK,
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ShutdownGopEvent,
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Private,
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&mGopScreenExitBootServicesEvent
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);
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Status = Private->EmuIoThunk->Open (Private->EmuIoThunk);
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if (!EFI_ERROR (Status)) {
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Private->EmuGraphicsWindow = Private->EmuIoThunk->Interface;
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// Register callback to support RegisterKeyNotify()
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Status = Private->EmuGraphicsWindow->RegisterKeyNotify (
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Private->EmuGraphicsWindow,
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GopPrivateMakeCallbackFunction,
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GopPrivateBreakCallbackFunction,
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Private
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);
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ASSERT_EFI_ERROR (Status);
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}
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return Status;
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}
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EFI_STATUS
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EmuGopConstructor (
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GOP_PRIVATE_DATA *Private
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)
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{
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Private->ModeData = mGopModeData;
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Private->GraphicsOutput.QueryMode = EmuGopQuerytMode;
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Private->GraphicsOutput.SetMode = EmuGopSetMode;
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Private->GraphicsOutput.Blt = EmuGopBlt;
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//
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// Allocate buffer for Graphics Output Protocol mode information
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//
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Private->GraphicsOutput.Mode = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE));
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if (Private->GraphicsOutput.Mode == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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Private->GraphicsOutput.Mode->Info = AllocatePool (sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION));
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if (Private->GraphicsOutput.Mode->Info == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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Private->GraphicsOutput.Mode->MaxMode = sizeof(mGopModeData) / sizeof(GOP_MODE_DATA);
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//
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// Till now, we have no idea about the window size.
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//
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Private->GraphicsOutput.Mode->Mode = GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER;
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Private->GraphicsOutput.Mode->Info->Version = 0;
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Private->GraphicsOutput.Mode->Info->HorizontalResolution = 0;
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Private->GraphicsOutput.Mode->Info->VerticalResolution = 0;
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Private->GraphicsOutput.Mode->Info->PixelFormat = PixelBltOnly;
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Private->GraphicsOutput.Mode->SizeOfInfo = sizeof (EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
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Private->GraphicsOutput.Mode->FrameBufferBase = (EFI_PHYSICAL_ADDRESS) (UINTN) NULL;
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Private->GraphicsOutput.Mode->FrameBufferSize = 0;
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Private->HardwareNeedsStarting = TRUE;
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Private->EmuGraphicsWindow = NULL;
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EmuGopInitializeSimpleTextInForWindow (Private);
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EmuGopInitializeSimplePointerForWindow (Private);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EmuGopDestructor (
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GOP_PRIVATE_DATA *Private
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)
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{
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if (!Private->HardwareNeedsStarting) {
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Private->EmuIoThunk->Close (Private->EmuIoThunk);
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Private->EmuGraphicsWindow = NULL;
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}
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//
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// Free graphics output protocol occupied resource
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//
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if (Private->GraphicsOutput.Mode != NULL) {
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if (Private->GraphicsOutput.Mode->Info != NULL) {
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FreePool (Private->GraphicsOutput.Mode->Info);
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}
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FreePool (Private->GraphicsOutput.Mode);
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}
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return EFI_SUCCESS;
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}
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VOID
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EFIAPI
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ShutdownGopEvent (
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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 EmuGopDestructor().
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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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EmuGopDestructor (Context);
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}
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