IoLibSev.h File Reference

#include <Base.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>

Go to the source code of this file.

Functions
VOID EFIAPI	SevIoReadFifo8 (IN UINTN Port, IN UINTN Count, OUT VOID *Buffer)
VOID EFIAPI	SevIoWriteFifo8 (IN UINTN Port, IN UINTN Count, IN VOID *Buffer)
VOID EFIAPI	SevIoReadFifo16 (IN UINTN Port, IN UINTN Count, OUT VOID *Buffer)
VOID EFIAPI	SevIoWriteFifo16 (IN UINTN Port, IN UINTN Count, IN VOID *Buffer)
VOID EFIAPI	SevIoReadFifo32 (IN UINTN Port, IN UINTN Count, OUT VOID *Buffer)
VOID EFIAPI	SevIoWriteFifo32 (IN UINTN Port, IN UINTN Count, IN VOID *Buffer)

Detailed Description

Header file for SEV IO library.

Copyright (c) 2021, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file IoLibSev.h.

Function Documentation

SevIoReadFifo16()

VOID EFIAPI SevIoReadFifo16	(	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.

SevIoReadFifo32()

VOID EFIAPI SevIoReadFifo32	(	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.

SevIoReadFifo8()

VOID EFIAPI SevIoReadFifo8	(	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.

SevIoWriteFifo16()

VOID EFIAPI SevIoWriteFifo16	(	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.

SevIoWriteFifo32()

VOID EFIAPI SevIoWriteFifo32	(	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.

SevIoWriteFifo8()

VOID EFIAPI SevIoWriteFifo8	(	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.