/*++

Copyright (c) 2007, 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:

  AcpiTable.h

Abstract:

  ACPI Table Protocol from the UEFI 2.1 specification.

  This protocol may be used to install or remove an ACPI table from a platform.

--*/

#ifndef __ACPI_TABLE_H__
#define __ACPI_TABLE_H__

#include "Acpi.h"

//
// Global ID for the Acpi Table Protocol
//
#define EFI_ACPI_TABLE_PROTOCOL_GUID \
  { \
    0xffe06bdd, 0x6107, 0x46a6, {0x7b, 0xb2, 0x5a, 0x9c, 0x7e, 0xc5, 0x27, 0x5c} \
  }

EFI_FORWARD_DECLARATION (EFI_ACPI_TABLE_PROTOCOL);

#define UEFI_ACPI_TABLE_SIGNATURE    EFI_SIGNATURE_32 ('U', 'E', 'F', 'I')

#pragma pack(1)

typedef struct {
  EFI_ACPI_DESCRIPTION_HEADER  Header;
  EFI_GUID                     Identifier;
  UINT16                       DataOffset;
} EFI_ACPI_TABLE;

#pragma pack()

typedef
EFI_STATUS
(EFIAPI *EFI_ACPI_TABLE_INSTALL_ACPI_TABLE) (
  IN EFI_ACPI_TABLE_PROTOCOL                    *This,
  IN VOID                                       *AcpiTableBuffer,
  IN UINTN                                      AcpiTableBufferSize,
  OUT UINTN                                     *TableKey
  )
/*++

  Routine Description:
    Installs an ACPI table into the RSDT/XSDT.

  Arguments:
    This                  - Protocol instance pointer.
    AcpiTableBuffer       - A pointer to a buffer containing the ACPI table to be installed.
    AcpiTableBufferSize   - Specifies the size, in bytes, of the AcpiTableBuffer buffer.
    TableKey              - Reurns a key to refer to the ACPI table.

  Returns:
    EFI_SUCCESS           - The table was successfully inserted.
    EFI_INVALID_PARAMETER - Either AcpiTableBuffer is NULL, TableKey is NULL, or AcpiTableBufferSize 
                            and the size field embedded in the ACPI table pointed to by AcpiTableBuffer
                            are not in sync.
    EFI_OUT_OF_RESOURCES  - Insufficient resources exist to complete the request.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_ACPI_TABLE_UNINSTALL_ACPI_TABLE) (
  IN EFI_ACPI_TABLE_PROTOCOL                    *This,
  IN UINTN                                      TableKey
  )
/*++

  Routine Description:
    Removes an ACPI table from the RSDT/XSDT.

  Arguments:
    This          - Protocol instance pointer.
    TableKey      - Specifies the table to uninstall.  The key was returned from InstallAcpiTable().

  Returns:
    EFI_SUCCESS   - The table was successfully uninstalled.
    EFI_NOT_FOUND - TableKey does not refer to a valid key for a table entry.

--*/
;

//
// Interface structure for the ACPI Table Protocol
//
struct _EFI_ACPI_TABLE_PROTOCOL {
  EFI_ACPI_TABLE_INSTALL_ACPI_TABLE    InstallAcpiTable;
  EFI_ACPI_TABLE_UNINSTALL_ACPI_TABLE  UninstallAcpiTable;
};

extern EFI_GUID gEfiAcpiTableProtocolGuid;

#endif
