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/** @file
UGA IO protocol from the EFI 1.10 specification.
Abstraction of a very simple graphics device.
Copyright (c) 2006 - 2008, 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.
**/
#ifndef __UGA_IO_H__
#define __UGA_IO_H__
#define EFI_UGA_IO_PROTOCOL_GUID \
{ 0x61a4d49e, 0x6f68, 0x4f1b, { 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 } }
typedef struct _EFI_UGA_IO_PROTOCOL EFI_UGA_IO_PROTOCOL;
typedef UINT32 UGA_STATUS;
typedef enum {
UgaDtParentBus = 1,
UgaDtGraphicsController,
UgaDtOutputController,
UgaDtOutputPort,
UgaDtOther
}
UGA_DEVICE_TYPE, *PUGA_DEVICE_TYPE;
typedef UINT32 UGA_DEVICE_ID, *PUGA_DEVICE_ID;
typedef struct {
UGA_DEVICE_TYPE deviceType;
UGA_DEVICE_ID deviceId;
UINT32 ui32DeviceContextSize;
UINT32 ui32SharedContextSize;
}
UGA_DEVICE_DATA, *PUGA_DEVICE_DATA;
typedef struct _UGA_DEVICE {
VOID *pvDeviceContext;
VOID *pvSharedContext;
VOID *pvRunTimeContext;
struct _UGA_DEVICE *pParentDevice;
VOID *pvBusIoServices;
VOID *pvStdIoServices;
UGA_DEVICE_DATA deviceData;
}
UGA_DEVICE, *PUGA_DEVICE;
typedef enum {
UgaIoGetVersion = 1,
UgaIoGetChildDevice,
UgaIoStartDevice,
UgaIoStopDevice,
UgaIoFlushDevice,
UgaIoResetDevice,
UgaIoGetDeviceState,
UgaIoSetDeviceState,
UgaIoSetPowerState,
UgaIoGetMemoryConfiguration,
UgaIoSetVideoMode,
UgaIoCopyRectangle,
UgaIoGetEdidSegment,
UgaIoDeviceChannelOpen,
UgaIoDeviceChannelClose,
UgaIoDeviceChannelRead,
UgaIoDeviceChannelWrite,
UgaIoGetPersistentDataSize,
UgaIoGetPersistentData,
UgaIoSetPersistentData,
UgaIoGetDevicePropertySize,
UgaIoGetDeviceProperty,
UgaIoBtPrivateInterface
}
UGA_IO_REQUEST_CODE, *PUGA_IO_REQUEST_CODE;
typedef struct {
IN UGA_IO_REQUEST_CODE ioRequestCode;
IN VOID *pvInBuffer;
IN UINT64 ui64InBufferSize;
OUT VOID *pvOutBuffer;
IN UINT64 ui64OutBufferSize;
OUT UINT64 ui64BytesReturned;
} UGA_IO_REQUEST, *PUGA_IO_REQUEST;
/**
Dynamically allocate storage for a child UGA_DEVICE .
@param[in] This The EFI_UGA_IO_PROTOCOL instance.
@param[in] ParentDevice ParentDevice specifies a pointer to the parent device of Device.
@param[in] DeviceData A pointer to UGA_DEVICE_DATA returned from a call to DispatchService()
with a UGA_DEVICE of Parent and an IoRequest of type UgaIoGetChildDevice.
@param[in] RunTimeContext Context to associate with Device.
@param[out] Device The Device returns a dynamically allocated child UGA_DEVICE object
for ParentDevice. The caller is responsible for deleting Device.
@retval EFI_SUCCESS Device was returned.
@retval EFI_INVALID_PARAMETER One of the arguments was not valid.
@retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_UGA_IO_PROTOCOL_CREATE_DEVICE)(
IN EFI_UGA_IO_PROTOCOL *This,
IN UGA_DEVICE *ParentDevice,
IN UGA_DEVICE_DATA *DeviceData,
IN VOID *RunTimeContext,
OUT UGA_DEVICE **Device
);
/**
Delete a dynamically allocated child UGA_DEVICE object that was allocated via CreateDevice() .
@param[in] This The EFI_UGA_IO_PROTOCOL instance. Type EFI_UGA_IO_PROTOCOL is
defined in Section 10.7.
@param[in] Device The Device points to a UGA_DEVICE object that was dynamically
allocated via a CreateDevice() call.
@retval EFI_SUCCESS Device was returned.
@retval EFI_INVALID_PARAMETER The Device was not allocated via CreateDevice().
**/
typedef
EFI_STATUS
(EFIAPI *EFI_UGA_IO_PROTOCOL_DELETE_DEVICE)(
IN EFI_UGA_IO_PROTOCOL * This,
IN UGA_DEVICE * Device
);
/**
This is the main UGA service dispatch routine for all UGA_IO_REQUEST s.
@param pDevice pDevice specifies a pointer to a device object associated with a
device enumerated by a pIoRequest->ioRequestCode of type
UgaIoGetChildDevice. The root device for the EFI_UGA_IO_PROTOCOL
is represented by pDevice being set to NULL.
@param pIoRequest
pIoRequest points to a caller allocated buffer that contains data
defined by pIoRequest->ioRequestCode. See Related Definitions for
a definition of UGA_IO_REQUEST_CODE s and their associated data
structures.
@return UGA_STATUS
**/
typedef UGA_STATUS
(EFIAPI *PUGA_FW_SERVICE_DISPATCH)(
IN PUGA_DEVICE pDevice,
IN OUT PUGA_IO_REQUEST pIoRequest
);
///
/// Provides a basic abstraction to send I/O requests to the graphics device and any of its children.
///
struct _EFI_UGA_IO_PROTOCOL {
EFI_UGA_IO_PROTOCOL_CREATE_DEVICE CreateDevice;
EFI_UGA_IO_PROTOCOL_DELETE_DEVICE DeleteDevice;
PUGA_FW_SERVICE_DISPATCH DispatchService;
};
extern EFI_GUID gEfiUgaIoProtocolGuid;
//
// Data structure that is stored in the EFI Configuration Table with the
// EFI_UGA_IO_PROTOCOL_GUID. The option ROMs listed in this table may have
// EBC UGA drivers.
//
typedef struct {
UINT32 Version;
UINT32 HeaderSize;
UINT32 SizeOfEntries;
UINT32 NumberOfEntries;
} EFI_DRIVER_OS_HANDOFF_HEADER;
typedef enum {
EfiUgaDriverFromPciRom,
EfiUgaDriverFromSystem,
EfiDriverHandoffMax
} EFI_DRIVER_HANOFF_ENUM;
typedef struct {
EFI_DRIVER_HANOFF_ENUM Type;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
VOID *PciRomImage;
UINT64 PciRomSize;
} EFI_DRIVER_OS_HANDOFF;
#endif
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