MdePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdePkg / Include / Protocol / AcpiTable.h

/** @file\r
  The file provides the protocol to install or remove an ACPI\r
  table from a platform.\r
\r
  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
  @par Revision Reference:\r
  This Protocol was introduced in UEFI Specification 2.3.\r
\r
**/\r
\r
#ifndef __ACPI_TABLE_H___\r
#define __ACPI_TABLE_H___\r
\r
#define EFI_ACPI_TABLE_PROTOCOL_GUID \\r
  { 0xffe06bdd, 0x6107, 0x46a6, { 0x7b, 0xb2, 0x5a, 0x9c, 0x7e, 0xc5, 0x27, 0x5c }}\r
\r
\r
typedef struct _EFI_ACPI_TABLE_PROTOCOL EFI_ACPI_TABLE_PROTOCOL;\r
\r
/**\r
\r
  The InstallAcpiTable() function allows a caller to install an\r
  ACPI table. When successful, the table will be linked by the\r
  RSDT/XSDT. AcpiTableBuffer specifies the table to be installed.\r
  InstallAcpiTable() will make a copy of the table and insert the\r
  copy into the RSDT/XSDT. InstallAcpiTable() must insert the new\r
  table at the end of the RSDT/XSDT. To prevent namespace\r
  collision, ACPI tables may be created using UEFI ACPI table\r
  format. If this protocol is used to install a table with a\r
  signature already present in the system, the new table will not\r
  replace the existing table. It is a platform implementation\r
  decision to add a new table with a signature matching an\r
  existing table or disallow duplicate table signatures and\r
  return EFI_ACCESS_DENIED. On successful output, TableKey is\r
  initialized with a unique key. Its value may be used in a\r
  subsequent call to UninstallAcpiTable to remove an ACPI table.\r
  If an EFI application is running at the time of this call, the\r
  relevant EFI_CONFIGURATION_TABLE pointer to the RSDT is no\r
  longer considered valid.\r
\r
\r
  @param This                 A pointer to a EFI_ACPI_TABLE_PROTOCOL.\r
\r
  @param AcpiTableBuffer      A pointer to a buffer containing the\r
                              ACPI table to be installed.\r
\r
  @param AcpiTableBufferSize  Specifies the size, in bytes, of\r
                              the AcpiTableBuffer buffer.\r
\r
\r
  @param TableKey             Returns a key to refer to the ACPI table.\r
\r
  @retval EFI_SUCCESS           The table was successfully inserted\r
\r
  @retval EFI_INVALID_PARAMETER Either AcpiTableBuffer is NULL,\r
                                TableKey is NULL, or\r
                                AcpiTableBufferSize and the size\r
                                field embedded in the ACPI table\r
                                pointed to by AcpiTableBuffer\r
                                are not in sync.\r
\r
  @retval EFI_OUT_OF_RESOURCES  Insufficient resources exist to\r
                                complete the request.\r
  @retval EFI_ACCESS_DENIED     The table signature matches a table already\r
                                present in the system and platform policy\r
                                does not allow duplicate tables of this type.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_ACPI_TABLE_INSTALL_ACPI_TABLE)(\r
  IN   EFI_ACPI_TABLE_PROTOCOL       *This,\r
  IN   VOID                          *AcpiTableBuffer,\r
  IN   UINTN                         AcpiTableBufferSize,\r
  OUT  UINTN                         *TableKey\r
);\r
\r
\r
/**\r
\r
  The UninstallAcpiTable() function allows a caller to remove an\r
  ACPI table. The routine will remove its reference from the\r
  RSDT/XSDT. A table is referenced by the TableKey parameter\r
  returned from a prior call to InstallAcpiTable(). If an EFI\r
  application is running at the time of this call, the relevant\r
  EFI_CONFIGURATION_TABLE pointer to the RSDT is no longer\r
  considered valid.\r
\r
  @param This                   A pointer to a EFI_ACPI_TABLE_PROTOCOL.\r
\r
  @param TableKey               Specifies the table to uninstall. The key was\r
                                returned from InstallAcpiTable().\r
\r
  @retval EFI_SUCCESS           The table was successfully inserted\r
\r
  @retval EFI_NOT_FOUND         TableKey does not refer to a valid key\r
                                for a table entry.\r
\r
  @retval EFI_OUT_OF_RESOURCES  Insufficient resources exist to\r
                                complete the request.\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_ACPI_TABLE_UNINSTALL_ACPI_TABLE)(\r
  IN  EFI_ACPI_TABLE_PROTOCOL       *This,\r
  IN  UINTN                         TableKey\r
);\r
\r
///\r
/// The EFI_ACPI_TABLE_PROTOCOL provides the ability for a component\r
/// to install and uninstall ACPI tables from a platform.\r
///\r
struct _EFI_ACPI_TABLE_PROTOCOL {\r
  EFI_ACPI_TABLE_INSTALL_ACPI_TABLE   InstallAcpiTable;\r
  EFI_ACPI_TABLE_UNINSTALL_ACPI_TABLE UninstallAcpiTable;\r
};\r
\r
extern EFI_GUID gEfiAcpiTableProtocolGuid;\r
\r
#endif\r
\r