SmmCpuIoLibInternal.h File Reference

#include <PiSmm.h>
#include <Protocol/SmmCpuIo2.h>
#include <Protocol/SmmPciRootBridgeIo.h>
#include <Library/IoLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/SmmServicesTableLib.h>

Go to the source code of this file.

Functions
UINT64 EFIAPI	IoReadWorker (IN UINTN Port, IN EFI_SMM_IO_WIDTH Width)
UINT64 EFIAPI	IoWriteWorker (IN UINTN Port, IN EFI_SMM_IO_WIDTH Width, IN UINT64 Data)
UINT64 EFIAPI	MmioReadWorker (IN UINTN Address, IN EFI_SMM_IO_WIDTH Width)
UINT64 EFIAPI	MmioWriteWorker (IN UINTN Address, IN EFI_SMM_IO_WIDTH Width, IN UINT64 Data)

Detailed Description

Internal include file of SMM CPU IO Library. It includes all necessary protocol/library class's header file for implementation of IoLib library instance. It is included all source code of this library instance.

Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file SmmCpuIoLibInternal.h.

Function Documentation

IoReadWorker()

UINT64 EFIAPI IoReadWorker	(	IN UINTN	Port,
		IN EFI_SMM_IO_WIDTH	Width
	)

Reads registers in the EFI CPU I/O space.

Reads the I/O port specified by Port with registers width specified by Width. The read value is returned. If such operations are not supported, then ASSERT(). This function must guarantee that all I/O read and write operations are serialized.

Parameters

Port	The base address of the I/O operation. The caller is responsible for aligning the Address if required.
Width	The width of the I/O operation.

Returns

Data read from registers in the EFI CPU I/O space.

Definition at line 31 of file IoLib.c.

IoWriteWorker()

UINT64 EFIAPI IoWriteWorker	(	IN UINTN	Port,
		IN EFI_SMM_IO_WIDTH	Width,
		IN UINT64	Data
	)

Writes registers in the EFI CPU I/O space.

Writes the I/O port specified by Port with registers width and value specified by Width and Data respectively. Data is returned. If such operations are not supported, then ASSERT(). This function must guarantee that all I/O read and write operations are serialized.

Parameters

Port	The base address of the I/O operation. The caller is responsible for aligning the Address if required.
Width	The width of the I/O operation.
Data	The value to write to the I/O port.

Returns

The parameter of Data.

Definition at line 62 of file IoLib.c.

MmioReadWorker()

UINT64 EFIAPI MmioReadWorker	(	IN UINTN	Address,
		IN EFI_SMM_IO_WIDTH	Width
	)

Reads memory-mapped registers in the EFI system memory space.

Reads the MMIO registers specified by Address with registers width specified by Width. The read value is returned. If such operations are not supported, then ASSERT(). This function must guarantee that all MMIO read and write operations are serialized.

Parameters

Address	The MMIO register to read. The caller is responsible for aligning the Address if required.
Width	The width of the I/O operation.

Returns

Data read from registers in the EFI system memory space.

Definition at line 92 of file IoLib.c.

MmioWriteWorker()

UINT64 EFIAPI MmioWriteWorker	(	IN UINTN	Address,
		IN EFI_SMM_IO_WIDTH	Width,
		IN UINT64	Data
	)

Writes memory-mapped registers in the EFI system memory space.

Writes the MMIO registers specified by Address with registers width and value specified by Width and Data respectively. Data is returned. If such operations are not supported, then ASSERT(). This function must guarantee that all MMIO read and write operations are serialized.

Parameters

Address	The MMIO register to read. The caller is responsible for aligning the Address if required.
Width	The width of the I/O operation.
Data	The value to write to the I/O port.

Returns

Data read from registers in the EFI system memory space.

Definition at line 123 of file IoLib.c.