#include "BaseIoLibIntrinsicInternal.h"

Functions
UINT8 EFIAPI	IoRead8 (IN UINTN Port)

UINT8 EFIAPI	IoWrite8 (IN UINTN Port, IN UINT8 Value)

UINT16 EFIAPI	IoRead16 (IN UINTN Port)

UINT16 EFIAPI	IoWrite16 (IN UINTN Port, IN UINT16 Value)

UINT32 EFIAPI	IoRead32 (IN UINTN Port)

UINT32 EFIAPI	IoWrite32 (IN UINTN Port, IN UINT32 Value)

UINT64 EFIAPI	IoRead64 (IN UINTN Port)

UINT64 EFIAPI	IoWrite64 (IN UINTN Port, IN UINT64 Value)

VOID EFIAPI	IoReadFifo8 (IN UINTN Port, IN UINTN Count, OUT VOID *Buffer)

VOID EFIAPI	IoWriteFifo8 (IN UINTN Port, IN UINTN Count, IN VOID *Buffer)

VOID EFIAPI	IoReadFifo16 (IN UINTN Port, IN UINTN Count, OUT VOID *Buffer)

VOID EFIAPI	IoWriteFifo16 (IN UINTN Port, IN UINTN Count, IN VOID *Buffer)

VOID EFIAPI	IoReadFifo32 (IN UINTN Port, IN UINTN Count, OUT VOID *Buffer)

VOID EFIAPI	IoWriteFifo32 (IN UINTN Port, IN UINTN Count, IN VOID *Buffer)

UINT8 EFIAPI	MmioRead8 (IN UINTN Address)

UINT8 EFIAPI	MmioWrite8 (IN UINTN Address, IN UINT8 Value)

UINT16 EFIAPI	MmioRead16 (IN UINTN Address)

UINT16 EFIAPI	MmioWrite16 (IN UINTN Address, IN UINT16 Value)

UINT32 EFIAPI	MmioRead32 (IN UINTN Address)

UINT32 EFIAPI	MmioWrite32 (IN UINTN Address, IN UINT32 Value)

UINT64 EFIAPI	MmioRead64 (IN UINTN Address)

UINT64 EFIAPI	MmioWrite64 (IN UINTN Address, IN UINT64 Value)

Detailed Description

I/O library for non I/O read and write access (memory map I/O read and write only) architecture, such as ARM, RISC-V and LoongArch processor.

Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
Copyright (c) 2017, AMD Incorporated. All rights reserved.
Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.
Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file IoLibNoIo.c.

Function Documentation

◆ IoRead16()

UINT16 EFIAPI IoRead16 ( IN UINTN Port )

Reads a 16-bit I/O port.

Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned. This function must guarantee that all I/O read and write operations are serialized.

If 16-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to read.

Returns: The value read.

Definition at line 86 of file IoLibNoIo.c.

◆ IoRead32()

UINT32 EFIAPI IoRead32 ( IN UINTN Port )

Reads a 32-bit I/O port.

Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned. This function must guarantee that all I/O read and write operations are serialized.

If 32-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to read.

Returns: The value read.

Definition at line 136 of file IoLibNoIo.c.

◆ IoRead64()

UINT64 EFIAPI IoRead64 ( IN UINTN Port )

Reads a 64-bit I/O port.

Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned. This function must guarantee that all I/O read and write operations are serialized.

If 64-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 64-bit boundary, then ASSERT().

Parameters

Port	The I/O port to read.

Returns: The value read.

Definition at line 187 of file IoLibNoIo.c.

◆ IoRead8()

UINT8 EFIAPI IoRead8 ( IN UINTN Port )

Reads an 8-bit I/O port.

Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned. This function must guarantee that all I/O read and write operations are serialized.

If 8-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to read.

Returns: The value read.

Definition at line 36 of file IoLibNoIo.c.

◆ IoReadFifo16()

VOID EFIAPI IoReadFifo16	(	IN UINTN	Port,
		IN UINTN	Count,
		OUT VOID *	Buffer
	)

Reads a 16-bit I/O port fifo into a block of memory.

Reads the 16-bit I/O fifo port specified by Port. The port is read Count times, and the read data is stored in the provided Buffer.

This function must guarantee that all I/O read and write operations are serialized.

If 16-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to read.
Count	The number of times to read I/O port.
Buffer	The buffer to store the read data into.

Definition at line 297 of file IoLibNoIo.c.

◆ IoReadFifo32()

VOID EFIAPI IoReadFifo32	(	IN UINTN	Port,
		IN UINTN	Count,
		OUT VOID *	Buffer
	)

Reads a 32-bit I/O port fifo into a block of memory.

Reads the 32-bit I/O fifo port specified by Port. The port is read Count times, and the read data is stored in the provided Buffer.

This function must guarantee that all I/O read and write operations are serialized.

If 32-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to read.
Count	The number of times to read I/O port.
Buffer	The buffer to store the read data into.

Definition at line 353 of file IoLibNoIo.c.

◆ IoReadFifo8()

VOID EFIAPI IoReadFifo8	(	IN UINTN	Port,
		IN UINTN	Count,
		OUT VOID *	Buffer
	)

Reads an 8-bit I/O port fifo into a block of memory.

Reads the 8-bit I/O fifo port specified by Port. The port is read Count times, and the read data is stored in the provided Buffer.

This function must guarantee that all I/O read and write operations are serialized.

If 8-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to read.
Count	The number of times to read I/O port.
Buffer	The buffer to store the read data into.

Definition at line 241 of file IoLibNoIo.c.

◆ IoWrite16()

UINT16 EFIAPI IoWrite16	(	IN UINTN	Port,
		IN UINT16	Value
	)

Writes a 16-bit I/O port.

Writes the 16-bit I/O port specified by Port with the value specified by Value and returns Value. This function must guarantee that all I/O read and write operations are serialized.

If 16-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to write.
Value	The value to write to the I/O port.

Returns: The value written the I/O port.

Definition at line 111 of file IoLibNoIo.c.

◆ IoWrite32()

UINT32 EFIAPI IoWrite32	(	IN UINTN	Port,
		IN UINT32	Value
	)

Writes a 32-bit I/O port.

Writes the 32-bit I/O port specified by Port with the value specified by Value and returns Value. This function must guarantee that all I/O read and write operations are serialized.

If 32-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to write.
Value	The value to write to the I/O port.

Returns: The value written the I/O port.

Definition at line 161 of file IoLibNoIo.c.

◆ IoWrite64()

UINT64 EFIAPI IoWrite64	(	IN UINTN	Port,
		IN UINT64	Value
	)

Writes a 64-bit I/O port.

Writes the 64-bit I/O port specified by Port with the value specified by Value and returns Value. This function must guarantee that all I/O read and write operations are serialized.

If 64-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 64-bit boundary, then ASSERT().

Parameters

Port	The I/O port to write.
Value	The value to write to the I/O port.

Returns: The value written to the I/O port.

Definition at line 213 of file IoLibNoIo.c.

◆ IoWrite8()

UINT8 EFIAPI IoWrite8	(	IN UINTN	Port,
		IN UINT8	Value
	)

Writes an 8-bit I/O port.

Writes the 8-bit I/O port specified by Port with the value specified by Value and returns Value. This function must guarantee that all I/O read and write operations are serialized.

If 8-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to write.
Value	The value to write to the I/O port.

Returns: The value written the I/O port.

Definition at line 61 of file IoLibNoIo.c.

◆ IoWriteFifo16()

VOID EFIAPI IoWriteFifo16	(	IN UINTN	Port,
		IN UINTN	Count,
		IN VOID *	Buffer
	)

Writes a block of memory into a 16-bit I/O port fifo.

Writes the 16-bit I/O fifo port specified by Port. The port is written Count times, and the write data is retrieved from the provided Buffer.

This function must guarantee that all I/O write and write operations are serialized.

If 16-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to write.
Count	The number of times to write I/O port.
Buffer	The buffer to retrieve the write data from.

Definition at line 325 of file IoLibNoIo.c.

◆ IoWriteFifo32()

VOID EFIAPI IoWriteFifo32	(	IN UINTN	Port,
		IN UINTN	Count,
		IN VOID *	Buffer
	)

Writes a block of memory into a 32-bit I/O port fifo.

Writes the 32-bit I/O fifo port specified by Port. The port is written Count times, and the write data is retrieved from the provided Buffer.

This function must guarantee that all I/O write and write operations are serialized.

If 32-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to write.
Count	The number of times to write I/O port.
Buffer	The buffer to retrieve the write data from.

Definition at line 381 of file IoLibNoIo.c.

◆ IoWriteFifo8()

VOID EFIAPI IoWriteFifo8	(	IN UINTN	Port,
		IN UINTN	Count,
		IN VOID *	Buffer
	)

Writes a block of memory into an 8-bit I/O port fifo.

Writes the 8-bit I/O fifo port specified by Port. The port is written Count times, and the write data is retrieved from the provided Buffer.

This function must guarantee that all I/O write and write operations are serialized.

If 8-bit I/O port operations are not supported, then ASSERT().

Parameters

Port	The I/O port to write.
Count	The number of times to write I/O port.
Buffer	The buffer to retrieve the write data from.

Definition at line 269 of file IoLibNoIo.c.

◆ MmioRead16()

UINT16 EFIAPI MmioRead16 ( IN UINTN Address )

Reads a 16-bit MMIO register.

Reads the 16-bit MMIO register specified by Address. The 16-bit read value is returned. This function must guarantee that all MMIO read and write operations are serialized.

If 16-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address The MMIO register to read.

Returns: The value read.

Definition at line 471 of file IoLibNoIo.c.

◆ MmioRead32()

UINT32 EFIAPI MmioRead32 ( IN UINTN Address )

Reads a 32-bit MMIO register.

Reads the 32-bit MMIO register specified by Address. The 32-bit read value is returned. This function must guarantee that all MMIO read and write operations are serialized.

If 32-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address The MMIO register to read.

Returns: The value read.

Definition at line 540 of file IoLibNoIo.c.

◆ MmioRead64()

UINT64 EFIAPI MmioRead64 ( IN UINTN Address )

Reads a 64-bit MMIO register.

Reads the 64-bit MMIO register specified by Address. The 64-bit read value is returned. This function must guarantee that all MMIO read and write operations are serialized.

If 64-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address The MMIO register to read.

Returns: The value read.

Definition at line 609 of file IoLibNoIo.c.

◆ MmioRead8()

UINT8 EFIAPI MmioRead8 ( IN UINTN Address )

Reads an 8-bit MMIO register.

Reads the 8-bit MMIO register specified by Address. The 8-bit read value is returned. This function must guarantee that all MMIO read and write operations are serialized.

If 8-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address The MMIO register to read.

Returns: The value read.

Definition at line 406 of file IoLibNoIo.c.

◆ MmioWrite16()

UINT16 EFIAPI MmioWrite16	(	IN UINTN	Address,
		IN UINT16	Value
	)

Writes a 16-bit MMIO register.

Writes the 16-bit MMIO register specified by Address with the value specified by Value and returns Value. This function must guarantee that all MMIO read and write operations are serialized.

If 16-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address	The MMIO register to write.
Value	The value to write to the MMIO register.

Definition at line 505 of file IoLibNoIo.c.

◆ MmioWrite32()

UINT32 EFIAPI MmioWrite32	(	IN UINTN	Address,
		IN UINT32	Value
	)

Writes a 32-bit MMIO register.

Writes the 32-bit MMIO register specified by Address with the value specified by Value and returns Value. This function must guarantee that all MMIO read and write operations are serialized.

If 32-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address	The MMIO register to write.
Value	The value to write to the MMIO register.

Definition at line 574 of file IoLibNoIo.c.

◆ MmioWrite64()

UINT64 EFIAPI MmioWrite64	(	IN UINTN	Address,
		IN UINT64	Value
	)

Writes a 64-bit MMIO register.

Writes the 64-bit MMIO register specified by Address with the value specified by Value and returns Value. This function must guarantee that all MMIO read and write operations are serialized.

If 64-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address	The MMIO register to write.
Value	The value to write to the MMIO register.

Definition at line 643 of file IoLibNoIo.c.

◆ MmioWrite8()

UINT8 EFIAPI MmioWrite8	(	IN UINTN	Address,
		IN UINT8	Value
	)

Writes an 8-bit MMIO register.

Writes the 8-bit MMIO register specified by Address with the value specified by Value and returns Value. This function must guarantee that all MMIO read and write operations are serialized.

If 8-bit MMIO register operations are not supported, then ASSERT().

Parameters

Address	The MMIO register to write.
Value	The value to write to the MMIO register.

Definition at line 438 of file IoLibNoIo.c.

Functions

Detailed Description

Function Documentation

◆ IoRead16()

◆ IoRead32()

◆ IoRead64()

◆ IoRead8()

◆ IoReadFifo16()

◆ IoReadFifo32()

◆ IoReadFifo8()

◆ IoWrite16()

◆ IoWrite32()

◆ IoWrite64()

◆ IoWrite8()

◆ IoWriteFifo16()

◆ IoWriteFifo32()

◆ IoWriteFifo8()

◆ MmioRead16()

◆ MmioRead32()

◆ MmioRead64()

◆ MmioRead8()

◆ MmioWrite16()

◆ MmioWrite32()

◆ MmioWrite64()

◆ MmioWrite8()