uefibiosvideo.h

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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:

  UefiBiosVideo.h
    
Abstract: 

Revision History
--*/

#ifndef _BIOS_GRAPHICS_OUTPUT_H
#define _BIOS_GRAPHICS_OUTPUT_H

#include "Tiano.h"
#include "EfiDriverLib.h"
#include "VesaBiosExtensions.h"
#include "Pci22.h"

//
// Driver Consumed Protocol Prototypes
//
#include EFI_PROTOCOL_DEFINITION (DevicePath)
#include EFI_PROTOCOL_DEFINITION (PciIo)
#include EFI_PROTOCOL_DEFINITION (LegacyBiosThunk)

//
// Driver Produced Protocol Prototypes
//
#include EFI_PROTOCOL_DEFINITION (DriverBinding)
#include EFI_PROTOCOL_DEFINITION (ComponentName)
#include EFI_PROTOCOL_DEFINITION (GraphicsOutput)
#include EFI_PROTOCOL_DEFINITION (EdidDiscovered)
#include EFI_PROTOCOL_DEFINITION (EdidActive)
#include EFI_PROTOCOL_DEFINITION (VgaMiniPort)

//
// Packed format support: The number of bits reserved for each of the colors and the actual
// position of RGB in the frame buffer is specified in the VBE Mode information
//
typedef struct {
  UINT8 Position; // Position of the color
  UINT8 Mask;     // The number of bits expressed as a mask
} BIOS_VIDEO_COLOR_PLACEMENT;

//
// BIOS Graphics Output Graphical Mode Data
//
typedef struct {
  UINT16                      VbeModeNumber;
  UINT16                      BytesPerScanLine;
  VOID                        *LinearFrameBuffer;
  UINTN                       FrameBufferSize;
  UINT32                      HorizontalResolution;
  UINT32                      VerticalResolution;
  UINT32                      RefreshRate;
  UINT32                      BitsPerPixel;
  BIOS_VIDEO_COLOR_PLACEMENT  Red;
  BIOS_VIDEO_COLOR_PLACEMENT  Green;
  BIOS_VIDEO_COLOR_PLACEMENT  Blue;
  BIOS_VIDEO_COLOR_PLACEMENT  Reserved;
  EFI_GRAPHICS_PIXEL_FORMAT   PixelFormat;
  EFI_PIXEL_BITMASK           PixelBitMask;
} BIOS_VIDEO_MODE_DATA;

//
// BIOS video child handle private data Structure
//
#define BIOS_VIDEO_DEV_SIGNATURE    EFI_SIGNATURE_32 ('B', 'V', 'M', 'p')

typedef struct {
  UINTN                                       Signature;
  EFI_HANDLE                                  Handle;

  //
  // Consumed Protocols
  //
  EFI_PCI_IO_PROTOCOL                         *PciIo;
  EFI_LEGACY_BIOS_THUNK_PROTOCOL              *LegacyBios;

  //
  // Produced Protocols
  //
  EFI_GRAPHICS_OUTPUT_PROTOCOL                GraphicsOutput;
  EFI_EDID_DISCOVERED_PROTOCOL                EdidDiscovered;
  EFI_EDID_ACTIVE_PROTOCOL                    EdidActive;
  EFI_VGA_MINI_PORT_PROTOCOL                  VgaMiniPort;

  //
  // General fields
  //
  BOOLEAN                                     VgaCompatible;
  BOOLEAN                                     ProduceGraphicsOutput;
  EFI_EVENT                                   ExitBootServicesEvent;

  //
  // Graphics Output Protocol related fields
  //
  BOOLEAN                                     HardwareNeedsStarting;
  BIOS_VIDEO_MODE_DATA                        *ModeData;
  UINT8                                       *LineBuffer;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL               *VbeFrameBuffer;
  UINT8                                       *VgaFrameBuffer;

  //
  // VESA Bios Extensions related fields
  //
  UINTN                                       NumberOfPagesBelow1MB;    // Number of 4KB pages in PagesBelow1MB
  EFI_PHYSICAL_ADDRESS                        PagesBelow1MB;            // Buffer for all VBE Information Blocks
  VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK      *VbeInformationBlock;     // 0x200 bytes.  Must be allocated below 1MB
  VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK *VbeModeInformationBlock; // 0x100 bytes.  Must be allocated below 1MB
  VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK        *VbeEdidDataBlock;        // 0x80  bytes.  Must be allocated below 1MB
  VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK *VbeCrtcInformationBlock; // 59 bytes.  Must be allocated below 1MB
  UINTN                                       VbeSaveRestorePages;      // Number of 4KB pages in VbeSaveRestoreBuffer
  EFI_PHYSICAL_ADDRESS                        VbeSaveRestoreBuffer;     // Must be allocated below 1MB
  //
  // Status code
  //
  EFI_DEVICE_PATH_PROTOCOL                    *DevicePath;
} BIOS_VIDEO_DEV;

#define BIOS_VIDEO_DEV_FROM_PCI_IO_THIS(a)      CR (a, BIOS_VIDEO_DEV, PciIo, BIOS_VIDEO_DEV_SIGNATURE)
#define BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS(a)      CR (a, BIOS_VIDEO_DEV, GraphicsOutput, BIOS_VIDEO_DEV_SIGNATURE)
#define BIOS_VIDEO_DEV_FROM_VGA_MINI_PORT_THIS(a) CR (a, BIOS_VIDEO_DEV, VgaMiniPort, BIOS_VIDEO_DEV_SIGNATURE)

#define GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER	0xffff

//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL  gBiosVideoDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL  gBiosVideoComponentName;

//
// Driver Binding Protocol functions
//
EFI_STATUS
EFIAPI
BiosVideoDriverBindingSupported (
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN EFI_HANDLE                   Controller,
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath
  )
/*++

Routine Description:

  GC_TODO: Add function description

Arguments:

  This                - GC_TODO: add argument description
  Controller          - GC_TODO: add argument description
  RemainingDevicePath - GC_TODO: add argument description

Returns:

  GC_TODO: add return values

--*/
;

EFI_STATUS
EFIAPI
BiosVideoDriverBindingStart (
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN EFI_HANDLE                   Controller,
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath
  )
/*++

Routine Description:

  GC_TODO: Add function description

Arguments:

  This                - GC_TODO: add argument description
  Controller          - GC_TODO: add argument description
  RemainingDevicePath - GC_TODO: add argument description

Returns:

  GC_TODO: add return values

--*/
;

EFI_STATUS
EFIAPI
BiosVideoDriverBindingStop (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   Controller,
  IN  UINTN                        NumberOfChildren,
  IN  EFI_HANDLE                   *ChildHandleBuffer
  )
/*++

Routine Description:

  GC_TODO: Add function description

Arguments:

  This              - GC_TODO: add argument description
  Controller        - GC_TODO: add argument description
  NumberOfChildren  - GC_TODO: add argument description
  ChildHandleBuffer - GC_TODO: add argument description

Returns:

  GC_TODO: add return values

--*/
;

//
// Private worker functions
//
EFI_STATUS
BiosVideoCheckForVbe (
  BIOS_VIDEO_DEV  *BiosVideoPrivate
  )
/*++

Routine Description:

  GC_TODO: Add function description

Arguments:

  BiosVideoPrivate  - GC_TODO: add argument description

Returns:

  GC_TODO: add return values

--*/
;

EFI_STATUS
BiosVideoCheckForVga (
  BIOS_VIDEO_DEV  *BiosVideoPrivate
  )
/*++

Routine Description:

  GC_TODO: Add function description

Arguments:

  BiosVideoPrivate  - GC_TODO: add argument description

Returns:

  GC_TODO: add return values

--*/
;