/** @file | |
IoFifo read/write routines. | |
Copyright (c) 2021 - 2023, Intel Corporation. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include "BaseIoLibIntrinsicInternal.h" | |
#include <Uefi/UefiBaseType.h> | |
/** | |
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(). | |
In TDX a serial of TdIoRead8 is invoked to read the I/O port fifo. | |
@param Port The I/O port to read. | |
@param Count The number of times to read I/O port. | |
@param Buffer The buffer to store the read data into. | |
**/ | |
VOID | |
EFIAPI | |
IoReadFifo8 ( | |
IN UINTN Port, | |
IN UINTN Count, | |
OUT VOID *Buffer | |
) | |
{ | |
UINT8 *Buffer8; | |
Buffer8 = (UINT8 *)Buffer; | |
while (Count-- > 0) { | |
*Buffer8++ = IoRead8 (Port); | |
} | |
} | |
/** | |
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(). | |
In TDX a serial of TdIoWrite8 is invoked to write data to the I/O port. | |
@param Port The I/O port to write. | |
@param Count The number of times to write I/O port. | |
@param Buffer The buffer to retrieve the write data from. | |
**/ | |
VOID | |
EFIAPI | |
IoWriteFifo8 ( | |
IN UINTN Port, | |
IN UINTN Count, | |
IN VOID *Buffer | |
) | |
{ | |
UINT8 *Buffer8; | |
Buffer8 = (UINT8 *)Buffer; | |
while (Count-- > 0) { | |
IoWrite8 (Port, *Buffer8++); | |
} | |
} | |
/** | |
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(). | |
In TDX a serial of TdIoRead16 is invoked to read data from the I/O port. | |
@param Port The I/O port to read. | |
@param Count The number of times to read I/O port. | |
@param Buffer The buffer to store the read data into. | |
**/ | |
VOID | |
EFIAPI | |
IoReadFifo16 ( | |
IN UINTN Port, | |
IN UINTN Count, | |
OUT VOID *Buffer | |
) | |
{ | |
UINT16 *Buffer16; | |
Buffer16 = (UINT16 *)Buffer; | |
while (Count-- > 0) { | |
*Buffer16++ = IoRead16 (Port); | |
} | |
} | |
/** | |
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(). | |
In TDX a serial of TdIoWrite16 is invoked to write data to the I/O port. | |
@param Port The I/O port to write. | |
@param Count The number of times to write I/O port. | |
@param Buffer The buffer to retrieve the write data from. | |
**/ | |
VOID | |
EFIAPI | |
IoWriteFifo16 ( | |
IN UINTN Port, | |
IN UINTN Count, | |
IN VOID *Buffer | |
) | |
{ | |
UINT16 *Buffer16; | |
Buffer16 = (UINT16 *)Buffer; | |
while (Count-- > 0) { | |
IoWrite16 (Port, *Buffer16++); | |
} | |
} | |
/** | |
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(). | |
In TDX a serial of TdIoRead32 is invoked to read data from the I/O port. | |
@param Port The I/O port to read. | |
@param Count The number of times to read I/O port. | |
@param Buffer The buffer to store the read data into. | |
**/ | |
VOID | |
EFIAPI | |
IoReadFifo32 ( | |
IN UINTN Port, | |
IN UINTN Count, | |
OUT VOID *Buffer | |
) | |
{ | |
UINT32 *Buffer32; | |
Buffer32 = (UINT32 *)Buffer; | |
while (Count-- > 0) { | |
*Buffer32++ = IoRead32 (Port); | |
} | |
} | |
/** | |
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(). | |
In TDX a serial of TdIoWrite32 is invoked to write data to the I/O port. | |
@param Port The I/O port to write. | |
@param Count The number of times to write I/O port. | |
@param Buffer The buffer to retrieve the write data from. | |
**/ | |
VOID | |
EFIAPI | |
IoWriteFifo32 ( | |
IN UINTN Port, | |
IN UINTN Count, | |
IN VOID *Buffer | |
) | |
{ | |
UINT32 *Buffer32; | |
Buffer32 = (UINT32 *)Buffer; | |
while (Count-- > 0) { | |
IoWrite32 (Port, *Buffer32++); | |
} | |
} |