MdePkg/Include/Protocol/UgaIo.h

   1 /** @file
   2   UGA IO protocol from the EFI 1.10 specification.
   3
   4   Abstraction of a very simple graphics device.
   5
   6   Copyright (c) 2006 - 2008, Intel Corporation
   7   All rights reserved. This program and the accompanying materials
   8   are licensed and made available under the terms and conditions of the BSD License
   9   which accompanies this distribution.  The full text of the license may be found at
  10   http://opensource.org/licenses/bsd-license.php
  11
  12   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16
  17 #ifndef __UGA_IO_H__
  18 #define __UGA_IO_H__
  19
  20 #define EFI_UGA_IO_PROTOCOL_GUID \
  21   { 0x61a4d49e, 0x6f68, 0x4f1b, { 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 } }
  22
  23 typedef struct _EFI_UGA_IO_PROTOCOL EFI_UGA_IO_PROTOCOL;
  24
  25 typedef UINT32                      UGA_STATUS;
  26
  27 typedef enum {
  28   UgaDtParentBus          = 1,
  29   UgaDtGraphicsController,
  30   UgaDtOutputController,
  31   UgaDtOutputPort,
  32   UgaDtOther
  33 }
  34 UGA_DEVICE_TYPE, *PUGA_DEVICE_TYPE;
  35
  36 typedef UINT32 UGA_DEVICE_ID, *PUGA_DEVICE_ID;
  37
  38 typedef struct {
  39   UGA_DEVICE_TYPE deviceType;
  40   UGA_DEVICE_ID   deviceId;
  41   UINT32          ui32DeviceContextSize;
  42   UINT32          ui32SharedContextSize;
  43 }
  44 UGA_DEVICE_DATA, *PUGA_DEVICE_DATA;
  45
  46 typedef struct _UGA_DEVICE {
  47   VOID                *pvDeviceContext;
  48   VOID                *pvSharedContext;
  49   VOID                *pvRunTimeContext;
  50   struct _UGA_DEVICE  *pParentDevice;
  51   VOID                *pvBusIoServices;
  52   VOID                *pvStdIoServices;
  53   UGA_DEVICE_DATA     deviceData;
  54 }
  55 UGA_DEVICE, *PUGA_DEVICE;
  56
  57 typedef enum {
  58   UgaIoGetVersion             = 1,
  59   UgaIoGetChildDevice,
  60   UgaIoStartDevice,
  61   UgaIoStopDevice,
  62   UgaIoFlushDevice,
  63   UgaIoResetDevice,
  64   UgaIoGetDeviceState,
  65   UgaIoSetDeviceState,
  66   UgaIoSetPowerState,
  67   UgaIoGetMemoryConfiguration,
  68   UgaIoSetVideoMode,
  69   UgaIoCopyRectangle,
  70   UgaIoGetEdidSegment,
  71   UgaIoDeviceChannelOpen,
  72   UgaIoDeviceChannelClose,
  73   UgaIoDeviceChannelRead,
  74   UgaIoDeviceChannelWrite,
  75   UgaIoGetPersistentDataSize,
  76   UgaIoGetPersistentData,
  77   UgaIoSetPersistentData,
  78   UgaIoGetDevicePropertySize,
  79   UgaIoGetDeviceProperty,
  80   UgaIoBtPrivateInterface
  81 }
  82 UGA_IO_REQUEST_CODE, *PUGA_IO_REQUEST_CODE;
  83
  84 typedef struct {
  85   IN UGA_IO_REQUEST_CODE  ioRequestCode;
  86   IN VOID                 *pvInBuffer;
  87   IN UINT64               ui64InBufferSize;
  88   OUT VOID                *pvOutBuffer;
  89   IN UINT64               ui64OutBufferSize;
  90   OUT UINT64              ui64BytesReturned;
  91 } UGA_IO_REQUEST, *PUGA_IO_REQUEST;
  92
  93
  94 /**
  95   Dynamically allocate storage for a child UGA_DEVICE .
  96
  97   @param[in]     This            The EFI_UGA_IO_PROTOCOL instance.
  98   @param[in]     ParentDevice    ParentDevice specifies a pointer to the parent device of Device.
  99   @param[in]     DeviceData      A pointer to UGA_DEVICE_DATA returned from a call to DispatchService()
 100                                  with a UGA_DEVICE of Parent and an IoRequest of type UgaIoGetChildDevice.
 101   @param[in]     RunTimeContext  Context to associate with Device.
 102   @param[out]    Device          The Device returns a dynamically allocated child UGA_DEVICE object
 103                                  for ParentDevice. The caller is responsible for deleting Device.
 104
 105
 106   @retval  EFI_SUCCESS           Device was returned.
 107   @retval  EFI_INVALID_PARAMETER One of the arguments was not valid.
 108   @retval  EFI_DEVICE_ERROR      The device had an error and could not complete the request.
 109
 110 **/
 111 typedef
 112 EFI_STATUS
 113 (EFIAPI *EFI_UGA_IO_PROTOCOL_CREATE_DEVICE)(
 114   IN  EFI_UGA_IO_PROTOCOL  *This,
 115   IN  UGA_DEVICE           *ParentDevice,
 116   IN  UGA_DEVICE_DATA      *DeviceData,
 117   IN  VOID                 *RunTimeContext,
 118   OUT UGA_DEVICE           **Device
 119   );
 120
 121
 122 /**
 123   Delete a dynamically allocated child UGA_DEVICE object that was allocated via CreateDevice() .
 124
 125   @param[in]     This            The EFI_UGA_IO_PROTOCOL instance. Type EFI_UGA_IO_PROTOCOL is
 126                                  defined in Section 10.7.
 127   @param[in]     Device          The Device points to a UGA_DEVICE object that was dynamically
 128                                  allocated via a CreateDevice() call.
 129
 130
 131   @retval  EFI_SUCCESS           Device was returned.
 132   @retval  EFI_INVALID_PARAMETER The Device was not allocated via CreateDevice().
 133
 134 **/
 135 typedef
 136 EFI_STATUS
 137 (EFIAPI *EFI_UGA_IO_PROTOCOL_DELETE_DEVICE)(
 138   IN EFI_UGA_IO_PROTOCOL  * This,
 139   IN UGA_DEVICE           * Device
 140   );
 141
 142 /**
 143   This is the main UGA service dispatch routine for all UGA_IO_REQUEST s.
 144
 145   @param pDevice pDevice specifies a pointer to a device object associated with a
 146                  device enumerated by a pIoRequest->ioRequestCode of type
 147                  UgaIoGetChildDevice. The root device for the EFI_UGA_IO_PROTOCOL
 148                  is represented by pDevice being set to NULL.
 149
 150   @param pIoRequest
 151                  pIoRequest points to a caller allocated buffer that contains data
 152                  defined by pIoRequest->ioRequestCode. See Related Definitions for
 153                  a definition of UGA_IO_REQUEST_CODE s and their associated data
 154                  structures.
 155
 156   @return UGA_STATUS
 157
 158 **/
 159 typedef UGA_STATUS
 160 (EFIAPI *PUGA_FW_SERVICE_DISPATCH)(
 161   IN PUGA_DEVICE pDevice,
 162   IN OUT PUGA_IO_REQUEST pIoRequest
 163   );
 164
 165 ///
 166 /// Provides a basic abstraction to send I/O requests to the graphics device and any of its children.
 167 ///
 168 struct _EFI_UGA_IO_PROTOCOL {
 169   EFI_UGA_IO_PROTOCOL_CREATE_DEVICE CreateDevice;
 170   EFI_UGA_IO_PROTOCOL_DELETE_DEVICE DeleteDevice;
 171   PUGA_FW_SERVICE_DISPATCH          DispatchService;
 172 };
 173
 174 extern EFI_GUID gEfiUgaIoProtocolGuid;
 175
 176 //
 177 // Data structure that is stored in the EFI Configuration Table with the
 178 // EFI_UGA_IO_PROTOCOL_GUID.  The option ROMs listed in this table may have
 179 // EBC UGA drivers.
 180 //
 181 typedef struct {
 182   UINT32  Version;
 183   UINT32  HeaderSize;
 184   UINT32  SizeOfEntries;
 185   UINT32  NumberOfEntries;
 186 } EFI_DRIVER_OS_HANDOFF_HEADER;
 187
 188 typedef enum {
 189   EfiUgaDriverFromPciRom,
 190   EfiUgaDriverFromSystem,
 191   EfiDriverHandoffMax
 192 } EFI_DRIVER_HANOFF_ENUM;
 193
 194 typedef struct {
 195   EFI_DRIVER_HANOFF_ENUM    Type;
 196   EFI_DEVICE_PATH_PROTOCOL  *DevicePath;
 197   VOID                      *PciRomImage;
 198   UINT64                    PciRomSize;
 199 } EFI_DRIVER_OS_HANDOFF;
 200
 201 #endif