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264 lines
9.4 KiB
C
264 lines
9.4 KiB
C
/** @file
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This protocol provides services for creating ACPI system description tables.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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This Protocol was introduced in PI Specification 1.2.
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**/
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#ifndef __ACPI_SYSTEM_DESCRIPTION_TABLE_H___
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#define __ACPI_SYSTEM_DESCRIPTION_TABLE_H___
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#define EFI_ACPI_SDT_PROTOCOL_GUID \
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{ 0xeb97088e, 0xcfdf, 0x49c6, { 0xbe, 0x4b, 0xd9, 0x6, 0xa5, 0xb2, 0xe, 0x86 }}
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typedef UINT32 EFI_ACPI_TABLE_VERSION;
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typedef VOID *EFI_ACPI_HANDLE;
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#define EFI_ACPI_TABLE_VERSION_NONE (1 << 0)
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#define EFI_ACPI_TABLE_VERSION_1_0B (1 << 1)
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#define EFI_ACPI_TABLE_VERSION_2_0 (1 << 2)
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#define EFI_ACPI_TABLE_VERSION_3_0 (1 << 3)
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#define EFI_ACPI_TABLE_VERSION_4_0 (1 << 4)
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#define EFI_ACPI_TABLE_VERSION_5_0 (1 << 5)
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typedef UINT32 EFI_ACPI_DATA_TYPE;
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#define EFI_ACPI_DATA_TYPE_NONE 0
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#define EFI_ACPI_DATA_TYPE_OPCODE 1
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#define EFI_ACPI_DATA_TYPE_NAME_STRING 2
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#define EFI_ACPI_DATA_TYPE_OP 3
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#define EFI_ACPI_DATA_TYPE_UINT 4
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#define EFI_ACPI_DATA_TYPE_STRING 5
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#define EFI_ACPI_DATA_TYPE_CHILD 6
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typedef struct {
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UINT32 Signature;
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UINT32 Length;
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UINT8 Revision;
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UINT8 Checksum;
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CHAR8 OemId[6];
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CHAR8 OemTableId[8];
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UINT32 OemRevision;
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UINT32 CreatorId;
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UINT32 CreatorRevision;
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} EFI_ACPI_SDT_HEADER;
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_NOTIFICATION_FN)(
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IN EFI_ACPI_SDT_HEADER *Table, ///< A pointer to the ACPI table header.
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IN EFI_ACPI_TABLE_VERSION Version, ///< The ACPI table's version.
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IN UINTN TableKey ///< The table key for this ACPI table.
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);
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/**
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Returns a requested ACPI table.
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The GetAcpiTable() function returns a pointer to a buffer containing the ACPI table associated
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with the Index that was input. The following structures are not considered elements in the list of
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ACPI tables:
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- Root System Description Pointer (RSD_PTR)
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- Root System Description Table (RSDT)
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- Extended System Description Table (XSDT)
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Version is updated with a bit map containing all the versions of ACPI of which the table is a
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member. For tables installed via the EFI_ACPI_TABLE_PROTOCOL.InstallAcpiTable() interface,
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the function returns the value of EFI_ACPI_STD_PROTOCOL.AcpiVersion.
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@param[in] Index The zero-based index of the table to retrieve.
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@param[out] Table Pointer for returning the table buffer.
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@param[out] Version On return, updated with the ACPI versions to which this table belongs. Type
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EFI_ACPI_TABLE_VERSION is defined in "Related Definitions" in the
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EFI_ACPI_SDT_PROTOCOL.
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@param[out] TableKey On return, points to the table key for the specified ACPI system definition table.
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This is identical to the table key used in the EFI_ACPI_TABLE_PROTOCOL.
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The TableKey can be passed to EFI_ACPI_TABLE_PROTOCOL.UninstallAcpiTable()
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to uninstall the table.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_NOT_FOUND The requested index is too large and a table was not found.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_GET_ACPI_TABLE2)(
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IN UINTN Index,
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OUT EFI_ACPI_SDT_HEADER **Table,
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OUT EFI_ACPI_TABLE_VERSION *Version,
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OUT UINTN *TableKey
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);
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/**
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Register or unregister a callback when an ACPI table is installed.
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This function registers or unregisters a function which will be called whenever a new ACPI table is
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installed.
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@param[in] Register If TRUE, then the specified function will be registered. If FALSE, then the specified
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function will be unregistered.
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@param[in] Notification Points to the callback function to be registered or unregistered.
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@retval EFI_SUCCESS Callback successfully registered or unregistered.
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@retval EFI_INVALID_PARAMETER Notification is NULL
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@retval EFI_INVALID_PARAMETER Register is FALSE and Notification does not match a known registration function.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_REGISTER_NOTIFY)(
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IN BOOLEAN Register,
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IN EFI_ACPI_NOTIFICATION_FN Notification
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);
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/**
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Create a handle from an ACPI opcode
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@param[in] Buffer Points to the ACPI opcode.
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@param[out] Handle Upon return, holds the handle.
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@retval EFI_SUCCESS Success
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@retval EFI_INVALID_PARAMETER Buffer is NULL or Handle is NULL or Buffer points to an
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invalid opcode.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_OPEN)(
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IN VOID *Buffer,
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OUT EFI_ACPI_HANDLE *Handle
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);
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/**
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Create a handle for the first ACPI opcode in an ACPI system description table.
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@param[in] TableKey The table key for the ACPI table, as returned by GetTable().
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@param[out] Handle On return, points to the newly created ACPI handle.
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@retval EFI_SUCCESS Handle created successfully.
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@retval EFI_NOT_FOUND TableKey does not refer to a valid ACPI table.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_OPEN_SDT)(
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IN UINTN TableKey,
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OUT EFI_ACPI_HANDLE *Handle
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);
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/**
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Close an ACPI handle.
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@param[in] Handle Returns the handle.
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@retval EFI_SUCCESS Success
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@retval EFI_INVALID_PARAMETER Handle is NULL or does not refer to a valid ACPI object.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_CLOSE)(
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IN EFI_ACPI_HANDLE Handle
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);
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/**
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Return the child ACPI objects.
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@param[in] ParentHandle Parent handle.
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@param[in, out] Handle On entry, points to the previously returned handle or NULL to start with the first
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handle. On return, points to the next returned ACPI handle or NULL if there are no
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child objects.
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@retval EFI_SUCCESS Success
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@retval EFI_INVALID_PARAMETER ParentHandle is NULL or does not refer to a valid ACPI object.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_GET_CHILD)(
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IN EFI_ACPI_HANDLE ParentHandle,
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IN OUT EFI_ACPI_HANDLE *Handle
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);
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/**
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Retrieve information about an ACPI object.
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@param[in] Handle ACPI object handle.
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@param[in] Index Index of the data to retrieve from the object. In general, indexes read from left-to-right
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in the ACPI encoding, with index 0 always being the ACPI opcode.
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@param[out] DataType Points to the returned data type or EFI_ACPI_DATA_TYPE_NONE if no data exists
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for the specified index.
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@param[out] Data Upon return, points to the pointer to the data.
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@param[out] DataSize Upon return, points to the size of Data.
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@retval
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_GET_OPTION)(
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IN EFI_ACPI_HANDLE Handle,
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IN UINTN Index,
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OUT EFI_ACPI_DATA_TYPE *DataType,
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OUT CONST VOID **Data,
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OUT UINTN *DataSize
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);
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/**
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Change information about an ACPI object.
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@param[in] Handle ACPI object handle.
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@param[in] Index Index of the data to retrieve from the object. In general, indexes read from left-to-right
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in the ACPI encoding, with index 0 always being the ACPI opcode.
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@param[in] Data Points to the data.
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@param[in] DataSize The size of the Data.
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@retval EFI_SUCCESS Success
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@retval EFI_INVALID_PARAMETER Handle is NULL or does not refer to a valid ACPI object.
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@retval EFI_BAD_BUFFER_SIZE Data cannot be accommodated in the space occupied by
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the option.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_SET_OPTION)(
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IN EFI_ACPI_HANDLE Handle,
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IN UINTN Index,
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IN CONST VOID *Data,
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IN UINTN DataSize
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);
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/**
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Returns the handle of the ACPI object representing the specified ACPI path
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@param[in] HandleIn Points to the handle of the object representing the starting point for the path search.
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@param[in] AcpiPath Points to the ACPI path, which conforms to the ACPI encoded path format.
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@param[out] HandleOut On return, points to the ACPI object which represents AcpiPath, relative to
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HandleIn.
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@retval EFI_SUCCESS Success
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@retval EFI_INVALID_PARAMETER HandleIn is NULL or does not refer to a valid ACPI object.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_ACPI_FIND_PATH)(
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IN EFI_ACPI_HANDLE HandleIn,
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IN VOID *AcpiPath,
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OUT EFI_ACPI_HANDLE *HandleOut
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);
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typedef struct _EFI_ACPI_SDT_PROTOCOL {
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///
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/// A bit map containing all the ACPI versions supported by this protocol.
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///
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EFI_ACPI_TABLE_VERSION AcpiVersion;
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EFI_ACPI_GET_ACPI_TABLE2 GetAcpiTable;
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EFI_ACPI_REGISTER_NOTIFY RegisterNotify;
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EFI_ACPI_OPEN Open;
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EFI_ACPI_OPEN_SDT OpenSdt;
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EFI_ACPI_CLOSE Close;
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EFI_ACPI_GET_CHILD GetChild;
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EFI_ACPI_GET_OPTION GetOption;
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EFI_ACPI_SET_OPTION SetOption;
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EFI_ACPI_FIND_PATH FindPath;
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} EFI_ACPI_SDT_PROTOCOL;
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extern EFI_GUID gEfiAcpiSdtProtocolGuid;
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#endif // __ACPI_SYSTEM_DESCRIPTION_TABLE_H___
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