/** @file

Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>

SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef _FB_GOP_H_
#define _FB_GOP_H_

#include <Protocol/PciIo.h>
#include <Protocol/DevicePath.h>
#include <Protocol/GraphicsOutput.h>
#include <Protocol/EdidActive.h>
#include <Protocol/EdidDiscovered.h>

#include <Guid/StatusCodeDataTypeId.h>
#include <Guid/EventGroup.h>
#include <Guid/FrameBufferInfoGuid.h>

#include <Library/PcdLib.h>
#include <Library/HobLib.h>
#include <Library/DebugLib.h>
#include <Library/ReportStatusCodeLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>

#include <IndustryStandard/Pci.h>

//
// 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
} FB_VIDEO_COLOR_PLACEMENT;

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

//
// BIOS video child handle private data Structure
//
#define FB_VIDEO_DEV_SIGNATURE    SIGNATURE_32 ('B', 'V', 'M', 'p')

typedef struct {
  UINTN                                       Signature;
  EFI_HANDLE                                  Handle;

  //
  // Consumed Protocols
  //
  EFI_PCI_IO_PROTOCOL                         *PciIo;  

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

  //
  // Graphics Output Protocol related fields
  //
  UINTN                                       CurrentMode;
  UINTN                                       MaxMode;
  FB_VIDEO_MODE_DATA                          *ModeData;
  
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL               *VbeFrameBuffer;
  
  //
  // Status code
  //
  EFI_DEVICE_PATH_PROTOCOL                    *GopDevicePath;
  
} FB_VIDEO_DEV;

#define FB_VIDEO_DEV_FROM_PCI_IO_THIS(a)           CR (a, FB_VIDEO_DEV, PciIo, FB_VIDEO_DEV_SIGNATURE)
#define FB_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS(a)  CR (a, FB_VIDEO_DEV, GraphicsOutput, FB_VIDEO_DEV_SIGNATURE)

#define GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER  0xffff

//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL   gFbGopDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL   gFbGopComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL  gFbGopComponentName2;

//
// Driver Binding Protocol functions
//

/**
  Supported.

  @param  This                   Pointer to driver binding protocol
  @param  Controller             Controller handle to connect
  @param  RemainingDevicePath    A pointer to the remaining portion of a device
                                 path

  @retval EFI_STATUS             EFI_SUCCESS:This controller can be managed by this
                                 driver, Otherwise, this controller cannot be
                                 managed by this driver

**/
EFI_STATUS
EFIAPI
FbGopDriverBindingSupported (
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN EFI_HANDLE                   Controller,
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath
  );


/**
  Install Graphics Output Protocol onto VGA device handles.

  @param  This                   Pointer to driver binding protocol
  @param  Controller             Controller handle to connect
  @param  RemainingDevicePath    A pointer to the remaining portion of a device
                                 path

  @return EFI_STATUS

**/
EFI_STATUS
EFIAPI
FbGopDriverBindingStart (
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN EFI_HANDLE                   Controller,
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath
  );


/**
  Stop.

  @param  This                   Pointer to driver binding protocol
  @param  Controller             Controller handle to connect
  @param  NumberOfChildren       Number of children handle created by this driver
  @param  ChildHandleBuffer      Buffer containing child handle created

  @retval EFI_SUCCESS            Driver disconnected successfully from controller
  @retval EFI_UNSUPPORTED        Cannot find FB_VIDEO_DEV structure

**/
EFI_STATUS
EFIAPI
FbGopDriverBindingStop (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   Controller,
  IN  UINTN                        NumberOfChildren,
  IN  EFI_HANDLE                   *ChildHandleBuffer
  );

//
// Private worker functions
//

/**
  Check for VBE device.

  @param  FbGopPrivate       Pointer to FB_VIDEO_DEV structure

  @retval EFI_SUCCESS            VBE device found

**/
EFI_STATUS
FbGopCheckForVbe (
  IN OUT FB_VIDEO_DEV  *FbGopPrivate
  );



/**
  Release resource for bios video instance.

  @param  FbGopPrivate       Video child device private data structure

**/
VOID
FbGopDeviceReleaseResource (
  FB_VIDEO_DEV  *FbGopPrivate
  );

//
// BIOS Graphics Output Protocol functions
//

/**
  Graphics Output protocol interface to get video mode.

  @param  This                   Protocol instance pointer.
  @param  ModeNumber             The mode number to return information on.
  @param  SizeOfInfo             A pointer to the size, in bytes, of the Info
                                 buffer.
  @param  Info                   Caller allocated buffer that returns information
                                 about ModeNumber.

  @retval EFI_SUCCESS            Mode information returned.
  @retval EFI_BUFFER_TOO_SMALL   The Info buffer was too small.
  @retval EFI_DEVICE_ERROR       A hardware error occurred trying to retrieve the
                                 video mode.
  @retval EFI_NOT_STARTED        Video display is not initialized. Call SetMode ()
  @retval EFI_INVALID_PARAMETER  One of the input args was NULL.

**/
EFI_STATUS
EFIAPI
FbGopGraphicsOutputQueryMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL          *This,
  IN  UINT32                                ModeNumber,
  OUT UINTN                                 *SizeOfInfo,
  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  **Info
  );


/**
  Graphics Output protocol interface to set video mode.

  @param  This                   Protocol instance pointer.
  @param  ModeNumber             The mode number to be set.

  @retval EFI_SUCCESS            Graphics mode was changed.
  @retval EFI_DEVICE_ERROR       The device had an error and could not complete the
                                 request.
  @retval EFI_UNSUPPORTED        ModeNumber is not supported by this device.

**/
EFI_STATUS
EFIAPI
FbGopGraphicsOutputSetMode (
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL * This,
  IN  UINT32                       ModeNumber
  );


/**
  Graphics Output protocol instance to block transfer for VBE device.

  @param  This                   Pointer to Graphics Output protocol instance
  @param  BltBuffer              The data to transfer to screen
  @param  BltOperation           The operation to perform
  @param  SourceX                The X coordinate of the source for BltOperation
  @param  SourceY                The Y coordinate of the source for BltOperation
  @param  DestinationX           The X coordinate of the destination for
                                 BltOperation
  @param  DestinationY           The Y coordinate of the destination for
                                 BltOperation
  @param  Width                  The width of a rectangle in the blt rectangle in
                                 pixels
  @param  Height                 The height of a rectangle in the blt rectangle in
                                 pixels
  @param  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.

  @retval EFI_INVALID_PARAMETER  Invalid parameter passed in
  @retval EFI_SUCCESS            Blt operation success

**/
EFI_STATUS
EFIAPI
FbGopGraphicsOutputVbeBlt (
  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
  );


/**
  Graphics Output protocol instance to block transfer for VGA device.

  @param  This                   Pointer to Graphics Output protocol instance
  @param  BltBuffer              The data to transfer to screen
  @param  BltOperation           The operation to perform
  @param  SourceX                The X coordinate of the source for BltOperation
  @param  SourceY                The Y coordinate of the source for BltOperation
  @param  DestinationX           The X coordinate of the destination for
                                 BltOperation
  @param  DestinationY           The Y coordinate of the destination for
                                 BltOperation
  @param  Width                  The width of a rectangle in the blt rectangle in
                                 pixels
  @param  Height                 The height of a rectangle in the blt rectangle in
                                 pixels
  @param  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.

  @retval EFI_INVALID_PARAMETER  Invalid parameter passed in
  @retval EFI_SUCCESS            Blt operation success

**/
EFI_STATUS
EFIAPI
FbGopGraphicsOutputVgaBlt (
  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
  );

/**
  Install child handles if the Handle supports MBR format.

  @param  This                   Calling context.
  @param  ParentHandle           Parent Handle
  @param  ParentPciIo            Parent PciIo interface
  @param  ParentLegacyBios       Parent LegacyBios interface
  @param  ParentDevicePath       Parent Device Path
  @param  RemainingDevicePath    Remaining Device Path

  @retval EFI_SUCCESS            If a child handle was added
  @retval other                  A child handle was not added

**/
EFI_STATUS
FbGopChildHandleInstall (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   ParentHandle,
  IN  EFI_PCI_IO_PROTOCOL          *ParentPciIo,
  IN  VOID                         *ParentLegacyBios,
  IN  EFI_DEVICE_PATH_PROTOCOL     *ParentDevicePath,
  IN  EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath
  );

/**
  Deregister an video child handle and free resources.

  @param  This                   Protocol instance pointer.
  @param  Controller             Video controller handle
  @param  Handle                 Video child handle

  @return EFI_STATUS

**/
EFI_STATUS
FbGopChildHandleUninstall (
  EFI_DRIVER_BINDING_PROTOCOL    *This,
  EFI_HANDLE                     Controller,
  EFI_HANDLE                     Handle
  );

/**
  Release resource for bios video instance.

  @param  FbGopPrivate       Video child device private data structure

**/
VOID
FbGopDeviceReleaseResource (
  FB_VIDEO_DEV  *FbGopPrivate
  );

/**
  Check if all video child handles have been uninstalled.

  @param  Controller             Video controller handle

  @return TRUE                   Child handles exist.
  @return FALSE                  All video child handles have been uninstalled.

**/
BOOLEAN
HasChildHandle (
  IN EFI_HANDLE  Controller
  );
#endif