MdePkg/Library/PeiIoLibCpuIo/IoHighLevel.c File Reference


Functions

UINT8 EFIAPI IoOr8 (IN UINTN Port, IN UINT8 OrData)
UINT8 EFIAPI IoAnd8 (IN UINTN Port, IN UINT8 AndData)
UINT8 EFIAPI IoAndThenOr8 (IN UINTN Port, IN UINT8 AndData, IN UINT8 OrData)
UINT8 EFIAPI IoBitFieldRead8 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit)
UINT8 EFIAPI IoBitFieldWrite8 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 Value)
UINT8 EFIAPI IoBitFieldOr8 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 OrData)
UINT8 EFIAPI IoBitFieldAnd8 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 AndData)
UINT8 EFIAPI IoBitFieldAndThenOr8 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 AndData, IN UINT8 OrData)
UINT16 EFIAPI IoOr16 (IN UINTN Port, IN UINT16 OrData)
UINT16 EFIAPI IoAnd16 (IN UINTN Port, IN UINT16 AndData)
UINT16 EFIAPI IoAndThenOr16 (IN UINTN Port, IN UINT16 AndData, IN UINT16 OrData)
UINT16 EFIAPI IoBitFieldRead16 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit)
UINT16 EFIAPI IoBitFieldWrite16 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 Value)
UINT16 EFIAPI IoBitFieldOr16 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 OrData)
UINT16 EFIAPI IoBitFieldAnd16 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 AndData)
UINT16 EFIAPI IoBitFieldAndThenOr16 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 AndData, IN UINT16 OrData)
UINT32 EFIAPI IoOr32 (IN UINTN Port, IN UINT32 OrData)
UINT32 EFIAPI IoAnd32 (IN UINTN Port, IN UINT32 AndData)
UINT32 EFIAPI IoAndThenOr32 (IN UINTN Port, IN UINT32 AndData, IN UINT32 OrData)
UINT32 EFIAPI IoBitFieldRead32 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit)
UINT32 EFIAPI IoBitFieldWrite32 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 Value)
UINT32 EFIAPI IoBitFieldOr32 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 OrData)
UINT32 EFIAPI IoBitFieldAnd32 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 AndData)
UINT32 EFIAPI IoBitFieldAndThenOr32 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 AndData, IN UINT32 OrData)
UINT64 EFIAPI IoOr64 (IN UINTN Port, IN UINT64 OrData)
UINT64 EFIAPI IoAnd64 (IN UINTN Port, IN UINT64 AndData)
UINT64 EFIAPI IoAndThenOr64 (IN UINTN Port, IN UINT64 AndData, IN UINT64 OrData)
UINT64 EFIAPI IoBitFieldRead64 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit)
UINT64 EFIAPI IoBitFieldWrite64 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 Value)
UINT64 EFIAPI IoBitFieldOr64 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 OrData)
UINT64 EFIAPI IoBitFieldAnd64 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 AndData)
UINT64 EFIAPI IoBitFieldAndThenOr64 (IN UINTN Port, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 AndData, IN UINT64 OrData)
UINT8 EFIAPI MmioOr8 (IN UINTN Address, IN UINT8 OrData)
UINT8 EFIAPI MmioAnd8 (IN UINTN Address, IN UINT8 AndData)
UINT8 EFIAPI MmioAndThenOr8 (IN UINTN Address, IN UINT8 AndData, IN UINT8 OrData)
UINT8 EFIAPI MmioBitFieldRead8 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit)
UINT8 EFIAPI MmioBitFieldWrite8 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 Value)
UINT8 EFIAPI MmioBitFieldOr8 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 OrData)
UINT8 EFIAPI MmioBitFieldAnd8 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 AndData)
UINT8 EFIAPI MmioBitFieldAndThenOr8 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT8 AndData, IN UINT8 OrData)
UINT16 EFIAPI MmioOr16 (IN UINTN Address, IN UINT16 OrData)
UINT16 EFIAPI MmioAnd16 (IN UINTN Address, IN UINT16 AndData)
UINT16 EFIAPI MmioAndThenOr16 (IN UINTN Address, IN UINT16 AndData, IN UINT16 OrData)
UINT16 EFIAPI MmioBitFieldRead16 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit)
UINT16 EFIAPI MmioBitFieldWrite16 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 Value)
UINT16 EFIAPI MmioBitFieldOr16 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 OrData)
UINT16 EFIAPI MmioBitFieldAnd16 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 AndData)
UINT16 EFIAPI MmioBitFieldAndThenOr16 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT16 AndData, IN UINT16 OrData)
UINT32 EFIAPI MmioOr32 (IN UINTN Address, IN UINT32 OrData)
UINT32 EFIAPI MmioAnd32 (IN UINTN Address, IN UINT32 AndData)
UINT32 EFIAPI MmioAndThenOr32 (IN UINTN Address, IN UINT32 AndData, IN UINT32 OrData)
UINT32 EFIAPI MmioBitFieldRead32 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit)
UINT32 EFIAPI MmioBitFieldWrite32 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 Value)
UINT32 EFIAPI MmioBitFieldOr32 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 OrData)
UINT32 EFIAPI MmioBitFieldAnd32 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 AndData)
UINT32 EFIAPI MmioBitFieldAndThenOr32 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT32 AndData, IN UINT32 OrData)
UINT64 EFIAPI MmioOr64 (IN UINTN Address, IN UINT64 OrData)
UINT64 EFIAPI MmioAnd64 (IN UINTN Address, IN UINT64 AndData)
UINT64 EFIAPI MmioAndThenOr64 (IN UINTN Address, IN UINT64 AndData, IN UINT64 OrData)
UINT64 EFIAPI MmioBitFieldRead64 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit)
UINT64 EFIAPI MmioBitFieldWrite64 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 Value)
UINT64 EFIAPI MmioBitFieldOr64 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 OrData)
UINT64 EFIAPI MmioBitFieldAnd64 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 AndData)
UINT64 EFIAPI MmioBitFieldAndThenOr64 (IN UINTN Address, IN UINTN StartBit, IN UINTN EndBit, IN UINT64 AndData, IN UINT64 OrData)

Detailed Description

High-level Io/Mmio functions.

All assertions for bit field operations are handled bit field functions in the Base Library.

Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php.

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.


Function Documentation

UINT16 EFIAPI IoAnd16 ( IN UINTN  Port,
IN UINT16  AndData 
)

Reads a 16-bit I/O port, performs a bitwise AND, and writes the result back to the 16-bit I/O port.

Reads the 16-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 16-bit I/O port specified by Port. The value written to the I/O port 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(). If Port is not aligned on a 16-bit boundary, then ASSERT().

Parameters:
Port The I/O port to write.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead16(), and IoWrite16().

UINT32 EFIAPI IoAnd32 ( IN UINTN  Port,
IN UINT32  AndData 
)

Reads a 32-bit I/O port, performs a bitwise AND, and writes the result back to the 32-bit I/O port.

Reads the 32-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 32-bit I/O port specified by Port. The value written to the I/O port 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(). If Port is not aligned on a 32-bit boundary, then ASSERT().

Parameters:
Port The I/O port to write.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead32(), and IoWrite32().

UINT64 EFIAPI IoAnd64 ( IN UINTN  Port,
IN UINT64  AndData 
)

Reads a 64-bit I/O port, performs a bitwise AND, and writes the result back to the 64-bit I/O port.

Reads the 64-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit I/O port specified by Port. The value written to the I/O port 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 write.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead64(), and IoWrite64().

UINT8 EFIAPI IoAnd8 ( IN UINTN  Port,
IN UINT8  AndData 
)

Reads an 8-bit I/O port, performs a bitwise AND, and writes the result back to the 8-bit I/O port.

Reads the 8-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 8-bit I/O port specified by Port. The value written to the I/O port 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 write.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead8(), and IoWrite8().

UINT16 EFIAPI IoAndThenOr16 ( IN UINTN  Port,
IN UINT16  AndData,
IN UINT16  OrData 
)

Reads a 16-bit I/O port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 16-bit I/O port.

Reads the 16-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 16-bit I/O port specified by Port. The value written to the I/O port 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(). If Port is not aligned on a 16-bit boundary, then ASSERT().

Parameters:
Port The I/O port to write.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References IoRead16(), and IoWrite16().

UINT32 EFIAPI IoAndThenOr32 ( IN UINTN  Port,
IN UINT32  AndData,
IN UINT32  OrData 
)

Reads a 32-bit I/O port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 32-bit I/O port.

Reads the 32-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 32-bit I/O port specified by Port. The value written to the I/O port 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(). If Port is not aligned on a 32-bit boundary, then ASSERT().

Parameters:
Port The I/O port to write.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References IoRead32(), and IoWrite32().

UINT64 EFIAPI IoAndThenOr64 ( IN UINTN  Port,
IN UINT64  AndData,
IN UINT64  OrData 
)

Reads a 64-bit I/O port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 64-bit I/O port.

Reads the 64-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 64-bit I/O port specified by Port. The value written to the I/O port 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 write.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References IoRead64(), and IoWrite64().

UINT8 EFIAPI IoAndThenOr8 ( IN UINTN  Port,
IN UINT8  AndData,
IN UINT8  OrData 
)

Reads an 8-bit I/O port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 8-bit I/O port.

Reads the 8-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 8-bit I/O port specified by Port. The value written to the I/O port 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 write.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References IoRead8(), and IoWrite8().

UINT16 EFIAPI IoBitFieldAnd16 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  AndData 
)

Reads a bit field in a 16-bit port, performs a bitwise AND, and writes the result back to the bit field in the 16-bit port.

Reads the 16-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 16-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in AndData are stripped.

If 16-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldAnd16(), IoRead16(), and IoWrite16().

UINT32 EFIAPI IoBitFieldAnd32 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  AndData 
)

Reads a bit field in a 32-bit port, performs a bitwise AND, and writes the result back to the bit field in the 32-bit port.

Reads the 32-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 32-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in AndData are stripped.

If 32-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldAnd32(), IoRead32(), and IoWrite32().

UINT64 EFIAPI IoBitFieldAnd64 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  AndData 
)

Reads a bit field in a 64-bit port, performs a bitwise AND, and writes the result back to the bit field in the 64-bit port.

Reads the 64-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in AndData are stripped.

If 64-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldAnd64(), IoRead64(), and IoWrite64().

UINT8 EFIAPI IoBitFieldAnd8 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  AndData 
)

Reads a bit field in an 8-bit port, performs a bitwise AND, and writes the result back to the bit field in the 8-bit port.

Reads the 8-bit I/O port specified by Port, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 8-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in AndData are stripped.

If 8-bit I/O port operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
AndData The value to AND with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldAnd8(), IoRead8(), and IoWrite8().

UINT16 EFIAPI IoBitFieldAndThenOr16 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  AndData,
IN UINT16  OrData 
)

Reads a bit field in a 16-bit port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 16-bit port.

Reads the 16-bit I/O port specified by Port, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 16-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 16-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References BitFieldAndThenOr16(), IoRead16(), and IoWrite16().

UINT32 EFIAPI IoBitFieldAndThenOr32 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  AndData,
IN UINT32  OrData 
)

Reads a bit field in a 32-bit port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 32-bit port.

Reads the 32-bit I/O port specified by Port, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 32-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 32-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References BitFieldAndThenOr32(), IoRead32(), and IoWrite32().

UINT64 EFIAPI IoBitFieldAndThenOr64 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  AndData,
IN UINT64  OrData 
)

Reads a bit field in a 64-bit port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 64-bit port.

Reads the 64-bit I/O port specified by Port, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 64-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 64-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References BitFieldAndThenOr64(), IoRead64(), and IoWrite64().

UINT8 EFIAPI IoBitFieldAndThenOr8 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  AndData,
IN UINT8  OrData 
)

Reads a bit field in an 8-bit port, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 8-bit port.

Reads the 8-bit I/O port specified by Port, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 8-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 8-bit I/O port operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
AndData The value to AND with the read value from the I/O port.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the I/O port.

References BitFieldAndThenOr8(), IoRead8(), and IoWrite8().

UINT16 EFIAPI IoBitFieldOr16 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  OrData 
)

Reads a bit field in a 16-bit port, performs a bitwise OR, and writes the result back to the bit field in the 16-bit port.

Reads the 16-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 16-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in OrData are stripped.

If 16-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldOr16(), IoRead16(), and IoWrite16().

UINT32 EFIAPI IoBitFieldOr32 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  OrData 
)

Reads a bit field in a 32-bit port, performs a bitwise OR, and writes the result back to the bit field in the 32-bit port.

Reads the 32-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 32-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in OrData are stripped.

If 32-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldOr32(), IoRead32(), and IoWrite32().

UINT64 EFIAPI IoBitFieldOr64 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  OrData 
)

Reads a bit field in a 64-bit port, performs a bitwise OR, and writes the result back to the bit field in the 64-bit port.

Reads the 64-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in OrData are stripped.

If 64-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldOr64(), IoRead64(), and IoWrite64().

UINT8 EFIAPI IoBitFieldOr8 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  OrData 
)

Reads a bit field in an 8-bit port, performs a bitwise OR, and writes the result back to the bit field in the 8-bit port.

Reads the 8-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 8-bit I/O port specified by Port. The value written to the I/O port is returned. This function must guarantee that all I/O read and write operations are serialized. Extra left bits in OrData are stripped.

If 8-bit I/O port operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References BitFieldOr8(), IoRead8(), and IoWrite8().

UINT16 EFIAPI IoBitFieldRead16 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of an I/O register.

Reads the bit field in a 16-bit I/O register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 16-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Port The I/O port to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
Returns:
The value read.

References BitFieldRead16(), and IoRead16().

UINT32 EFIAPI IoBitFieldRead32 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of an I/O register.

Reads the bit field in a 32-bit I/O register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 32-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Port The I/O port to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
Returns:
The value read.

References BitFieldRead32(), and IoRead32().

UINT64 EFIAPI IoBitFieldRead64 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of an I/O register.

Reads the bit field in a 64-bit I/O register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 64-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Port The I/O port to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
Returns:
The value read.

References BitFieldRead64(), and IoRead64().

UINT8 EFIAPI IoBitFieldRead8 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of an I/O register.

Reads the bit field in an 8-bit I/O register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 8-bit I/O port operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Port The I/O port to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
Returns:
The value read.

References BitFieldRead8(), and IoRead8().

UINT16 EFIAPI IoBitFieldWrite16 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  Value 
)

Writes a bit field to an I/O register.

Writes Value to the bit field of the I/O register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination I/O register are preserved. The value written to the I/O port is returned. Extra left bits in Value are stripped.

If 16-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
Value The new value of the bit field.
Returns:
The value written back to the I/O port.

References BitFieldWrite16(), IoRead16(), and IoWrite16().

UINT32 EFIAPI IoBitFieldWrite32 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  Value 
)

Writes a bit field to an I/O register.

Writes Value to the bit field of the I/O register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination I/O register are preserved. The value written to the I/O port is returned. Extra left bits in Value are stripped.

If 32-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
Value The new value of the bit field.
Returns:
The value written back to the I/O port.

References BitFieldWrite32(), IoRead32(), and IoWrite32().

UINT64 EFIAPI IoBitFieldWrite64 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  Value 
)

Writes a bit field to an I/O register.

Writes Value to the bit field of the I/O register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination I/O register are preserved. The value written to the I/O port is returned. Extra left bits in Value are stripped.

If 64-bit I/O port operations are not supported, then ASSERT(). If Port is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
Value The new value of the bit field.
Returns:
The value written back to the I/O port.

References BitFieldWrite64(), IoRead64(), and IoWrite64().

UINT8 EFIAPI IoBitFieldWrite8 ( IN UINTN  Port,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  Value 
)

Writes a bit field to an I/O register.

Writes Value to the bit field of the I/O register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination I/O register are preserved. The value written to the I/O port is returned.

If 8-bit I/O port operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Port The I/O port to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
Value The new value of the bit field.
Returns:
The value written back to the I/O port.

References BitFieldWrite8(), IoRead8(), and IoWrite8().

UINT16 EFIAPI IoOr16 ( IN UINTN  Port,
IN UINT16  OrData 
)

Reads a 16-bit I/O port, performs a bitwise OR, and writes the result back to the 16-bit I/O port.

Reads the 16-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 16-bit I/O port specified by Port. The value written to the I/O port 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(). If Port is not aligned on a 16-bit boundary, then ASSERT().

Parameters:
Port The I/O port to write.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead16(), and IoWrite16().

UINT32 EFIAPI IoOr32 ( IN UINTN  Port,
IN UINT32  OrData 
)

Reads a 32-bit I/O port, performs a bitwise OR, and writes the result back to the 32-bit I/O port.

Reads the 32-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 32-bit I/O port specified by Port. The value written to the I/O port 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(). If Port is not aligned on a 32-bit boundary, then ASSERT().

Parameters:
Port The I/O port to write.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead32(), and IoWrite32().

UINT64 EFIAPI IoOr64 ( IN UINTN  Port,
IN UINT64  OrData 
)

Reads a 64-bit I/O port, performs a bitwise OR, and writes the result back to the 64-bit I/O port.

Reads the 64-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit I/O port specified by Port. The value written to the I/O port 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 write.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead64(), and IoWrite64().

UINT8 EFIAPI IoOr8 ( IN UINTN  Port,
IN UINT8  OrData 
)

Reads an 8-bit I/O port, performs a bitwise OR, and writes the result back to the 8-bit I/O port.

Reads the 8-bit I/O port specified by Port, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 8-bit I/O port specified by Port. The value written to the I/O port 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 write.
OrData The value to OR with the read value from the I/O port.
Returns:
The value written back to the I/O port.

References IoRead8(), and IoWrite8().

UINT16 EFIAPI MmioAnd16 ( IN UINTN  Address,
IN UINT16  AndData 
)

Reads a 16-bit MMIO register, performs a bitwise AND, and writes the result back to the 16-bit MMIO register.

Reads the 16-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 16-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 16-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
AndData The value to AND with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead16(), and MmioWrite16().

UINT32 EFIAPI MmioAnd32 ( IN UINTN  Address,
IN UINT32  AndData 
)

Reads a 32-bit MMIO register, performs a bitwise AND, and writes the result back to the 32-bit MMIO register.

Reads the 32-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 32-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 32-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
AndData The value to AND with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead32(), and MmioWrite32().

UINT64 EFIAPI MmioAnd64 ( IN UINTN  Address,
IN UINT64  AndData 
)

Reads a 64-bit MMIO register, performs a bitwise AND, and writes the result back to the 64-bit MMIO register.

Reads the 64-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 64-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
AndData The value to AND with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead64(), and MmioWrite64().

UINT8 EFIAPI MmioAnd8 ( IN UINTN  Address,
IN UINT8  AndData 
)

Reads an 8-bit MMIO register, performs a bitwise AND, and writes the result back to the 8-bit MMIO register.

Reads the 8-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 8-bit MMIO register specified by Address. The value written to the MMIO register 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 write.
AndData The value to AND with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead8(), and MmioWrite8().

UINT16 EFIAPI MmioAndThenOr16 ( IN UINTN  Address,
IN UINT16  AndData,
IN UINT16  OrData 
)

Reads a 16-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 16-bit MMIO register.

Reads the 16-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 16-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 16-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
AndData The value to AND with the read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References MmioRead16(), and MmioWrite16().

UINT32 EFIAPI MmioAndThenOr32 ( IN UINTN  Address,
IN UINT32  AndData,
IN UINT32  OrData 
)

Reads a 32-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 32-bit MMIO register.

Reads the 32-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 32-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 32-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
AndData The value to AND with the read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References MmioRead32(), and MmioWrite32().

UINT64 EFIAPI MmioAndThenOr64 ( IN UINTN  Address,
IN UINT64  AndData,
IN UINT64  OrData 
)

Reads a 64-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 64-bit MMIO register.

Reads the 64-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 64-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 64-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
AndData The value to AND with the read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References MmioRead64(), and MmioWrite64().

UINT8 EFIAPI MmioAndThenOr8 ( IN UINTN  Address,
IN UINT8  AndData,
IN UINT8  OrData 
)

Reads an 8-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the 8-bit MMIO register.

Reads the 8-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, performs a bitwise OR between the result of the AND operation and the value specified by OrData, and writes the result to the 8-bit MMIO register specified by Address. The value written to the MMIO register 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 write.
AndData The value to AND with the read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References MmioRead8(), and MmioWrite8().

UINT16 EFIAPI MmioBitFieldAnd16 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  AndData 
)

Reads a bit field in a 16-bit MMIO register, performs a bitwise AND, and writes the result back to the bit field in the 16-bit MMIO register.

Reads the 16-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 16-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in AndData are stripped.

If 16-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
AndData The value to AND with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldAnd16(), MmioRead16(), and MmioWrite16().

UINT32 EFIAPI MmioBitFieldAnd32 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  AndData 
)

Reads a bit field in a 32-bit MMIO register, performs a bitwise AND, and writes the result back to the bit field in the 32-bit MMIO register.

Reads the 32-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 32-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in AndData are stripped.

If 32-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
AndData The value to AND with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldAnd32(), MmioRead32(), and MmioWrite32().

UINT64 EFIAPI MmioBitFieldAnd64 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  AndData 
)

Reads a bit field in a 64-bit MMIO register, performs a bitwise AND, and writes the result back to the bit field in the 64-bit MMIO register.

Reads the 64-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 64-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in AndData are stripped.

If 64-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
AndData The value to AND with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldAnd64(), MmioRead64(), and MmioWrite64().

UINT8 EFIAPI MmioBitFieldAnd8 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  AndData 
)

Reads a bit field in an 8-bit MMIO register, performs a bitwise AND, and writes the result back to the bit field in the 8-bit MMIO register.

Reads the 8-bit MMIO register specified by Address, performs a bitwise AND between the read result and the value specified by AndData, and writes the result to the 8-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in AndData are stripped.

If 8-bit MMIO register operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
AndData The value to AND with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldAnd8(), MmioRead8(), and MmioWrite8().

UINT16 EFIAPI MmioBitFieldAndThenOr16 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  AndData,
IN UINT16  OrData 
)

Reads a bit field in a 16-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 16-bit MMIO register.

Reads the 16-bit MMIO register specified by Address, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 16-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 16-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
AndData The value to AND with read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References BitFieldAndThenOr16(), MmioRead16(), and MmioWrite16().

UINT32 EFIAPI MmioBitFieldAndThenOr32 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  AndData,
IN UINT32  OrData 
)

Reads a bit field in a 32-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 32-bit MMIO register.

Reads the 32-bit MMIO register specified by Address, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 32-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 32-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
AndData The value to AND with read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References BitFieldAndThenOr32(), MmioRead32(), and MmioWrite32().

UINT64 EFIAPI MmioBitFieldAndThenOr64 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  AndData,
IN UINT64  OrData 
)

Reads a bit field in a 64-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 64-bit MMIO register.

Reads the 64-bit MMIO register specified by Address, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 64-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 64-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
AndData The value to AND with read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References BitFieldAndThenOr64(), MmioRead64(), and MmioWrite64().

UINT8 EFIAPI MmioBitFieldAndThenOr8 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  AndData,
IN UINT8  OrData 
)

Reads a bit field in an 8-bit MMIO register, performs a bitwise AND followed by a bitwise OR, and writes the result back to the bit field in the 8-bit MMIO register.

Reads the 8-bit MMIO register specified by Address, performs a bitwise AND followed by a bitwise OR between the read result and the value specified by AndData, and writes the result to the 8-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in both AndData and OrData are stripped.

If 8-bit MMIO register operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
AndData The value to AND with read value from the MMIO register.
OrData The value to OR with the result of the AND operation.
Returns:
The value written back to the MMIO register.

References BitFieldAndThenOr8(), MmioRead8(), and MmioWrite8().

UINT16 EFIAPI MmioBitFieldOr16 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  OrData 
)

Reads a bit field in a 16-bit MMIO register, performs a bitwise OR, and writes the result back to the bit field in the 16-bit MMIO register.

Reads the 16-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 16-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in OrData are stripped.

If 16-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
OrData The value to OR with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldOr16(), MmioRead16(), and MmioWrite16().

UINT32 EFIAPI MmioBitFieldOr32 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  OrData 
)

Reads a bit field in a 32-bit MMIO register, performs a bitwise OR, and writes the result back to the bit field in the 32-bit MMIO register.

Reads the 32-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 32-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in OrData are stripped.

If 32-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
OrData The value to OR with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldOr32(), MmioRead32(), and MmioWrite32().

UINT64 EFIAPI MmioBitFieldOr64 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  OrData 
)

Reads a bit field in a 64-bit MMIO register, performs a bitwise OR, and writes the result back to the bit field in the 64-bit MMIO register.

Reads the 64-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in OrData are stripped.

If 64-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
OrData The value to OR with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldOr64(), MmioRead64(), and MmioWrite64().

UINT8 EFIAPI MmioBitFieldOr8 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  OrData 
)

Reads a bit field in an 8-bit MMIO register, performs a bitwise OR, and writes the result back to the bit field in the 8-bit MMIO register.

Reads the 8-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 8-bit MMIO register specified by Address. The value written to the MMIO register is returned. This function must guarantee that all MMIO read and write operations are serialized. Extra left bits in OrData are stripped.

If 8-bit MMIO register operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
OrData The value to OR with read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References BitFieldOr8(), MmioRead8(), and MmioWrite8().

UINT16 EFIAPI MmioBitFieldRead16 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of a MMIO register.

Reads the bit field in a 16-bit MMIO register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 16-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Address The MMIO register to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
Returns:
The value read.

References BitFieldRead16(), and MmioRead16().

UINT32 EFIAPI MmioBitFieldRead32 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of a MMIO register.

Reads the bit field in a 32-bit MMIO register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 32-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Address The MMIO register to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
Returns:
The value read.

References BitFieldRead32(), and MmioRead32().

UINT64 EFIAPI MmioBitFieldRead64 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of a MMIO register.

Reads the bit field in a 64-bit MMIO register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 64-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Address The MMIO register to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
Returns:
The value read.

References BitFieldRead64(), and MmioRead64().

UINT8 EFIAPI MmioBitFieldRead8 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit 
)

Reads a bit field of a MMIO register.

Reads the bit field in an 8-bit MMIO register. The bit field is specified by the StartBit and the EndBit. The value of the bit field is returned.

If 8-bit MMIO register operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT().

Parameters:
Address The MMIO register to read.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
Returns:
The value read.

References BitFieldRead8(), and MmioRead8().

UINT16 EFIAPI MmioBitFieldWrite16 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT16  Value 
)

Writes a bit field to a MMIO register.

Writes Value to the bit field of the MMIO register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination MMIO register are preserved. The new value of the 16-bit register is returned.

If 16-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 16-bit boundary, then ASSERT(). If StartBit is greater than 15, then ASSERT(). If EndBit is greater than 15, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..15.
EndBit The ordinal of the most significant bit in the bit field. Range 0..15.
Value The new value of the bit field.
Returns:
The value written back to the MMIO register.

References BitFieldWrite16(), MmioRead16(), and MmioWrite16().

UINT32 EFIAPI MmioBitFieldWrite32 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT32  Value 
)

Writes a bit field to a MMIO register.

Writes Value to the bit field of the MMIO register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination MMIO register are preserved. The new value of the 32-bit register is returned.

If 32-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 32-bit boundary, then ASSERT(). If StartBit is greater than 31, then ASSERT(). If EndBit is greater than 31, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..31.
EndBit The ordinal of the most significant bit in the bit field. Range 0..31.
Value The new value of the bit field.
Returns:
The value written back to the MMIO register.

References BitFieldWrite32(), MmioRead32(), and MmioWrite32().

UINT64 EFIAPI MmioBitFieldWrite64 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT64  Value 
)

Writes a bit field to a MMIO register.

Writes Value to the bit field of the MMIO register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination MMIO register are preserved. The new value of the 64-bit register is returned.

If 64-bit MMIO register operations are not supported, then ASSERT(). If Address is not aligned on a 64-bit boundary, then ASSERT(). If StartBit is greater than 63, then ASSERT(). If EndBit is greater than 63, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..63.
EndBit The ordinal of the most significant bit in the bit field. Range 0..63.
Value The new value of the bit field.
Returns:
The value written back to the MMIO register.

References BitFieldWrite64(), MmioRead64(), and MmioWrite64().

UINT8 EFIAPI MmioBitFieldWrite8 ( IN UINTN  Address,
IN UINTN  StartBit,
IN UINTN  EndBit,
IN UINT8  Value 
)

Writes a bit field to a MMIO register.

Writes Value to the bit field of the MMIO register. The bit field is specified by the StartBit and the EndBit. All other bits in the destination MMIO register are preserved. The new value of the 8-bit register is returned.

If 8-bit MMIO register operations are not supported, then ASSERT(). If StartBit is greater than 7, then ASSERT(). If EndBit is greater than 7, then ASSERT(). If EndBit is less than StartBit, then ASSERT(). If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().

Parameters:
Address The MMIO register to write.
StartBit The ordinal of the least significant bit in the bit field. Range 0..7.
EndBit The ordinal of the most significant bit in the bit field. Range 0..7.
Value The new value of the bit field.
Returns:
The value written back to the MMIO register.

References BitFieldWrite8(), MmioRead8(), and MmioWrite8().

UINT16 EFIAPI MmioOr16 ( IN UINTN  Address,
IN UINT16  OrData 
)

Reads a 16-bit MMIO register, performs a bitwise OR, and writes the result back to the 16-bit MMIO register.

Reads the 16-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 16-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 16-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
OrData The value to OR with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead16(), and MmioWrite16().

UINT32 EFIAPI MmioOr32 ( IN UINTN  Address,
IN UINT32  OrData 
)

Reads a 32-bit MMIO register, performs a bitwise OR, and writes the result back to the 32-bit MMIO register.

Reads the 32-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 32-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 32-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
OrData The value to OR with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead32(), and MmioWrite32().

UINT64 EFIAPI MmioOr64 ( IN UINTN  Address,
IN UINT64  OrData 
)

Reads a 64-bit MMIO register, performs a bitwise OR, and writes the result back to the 64-bit MMIO register.

Reads the 64-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 64-bit MMIO register specified by Address. The value written to the MMIO register 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(). If Address is not aligned on a 64-bit boundary, then ASSERT().

Parameters:
Address The MMIO register to write.
OrData The value to OR with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead64(), and MmioWrite64().

UINT8 EFIAPI MmioOr8 ( IN UINTN  Address,
IN UINT8  OrData 
)

Reads an 8-bit MMIO register, performs a bitwise OR, and writes the result back to the 8-bit MMIO register.

Reads the 8-bit MMIO register specified by Address, performs a bitwise OR between the read result and the value specified by OrData, and writes the result to the 8-bit MMIO register specified by Address. The value written to the MMIO register 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 write.
OrData The value to OR with the read value from the MMIO register.
Returns:
The value written back to the MMIO register.

References MmioRead8(), and MmioWrite8().


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