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/** IoAccessLib.c
Provide MMIO APIs for BE modules.
Copyright 2017-2020 NXP
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h>
#include <Library/BaseLib.h>
#include <Library/IoAccessLib.h>
#include <Library/IoLib.h>
/**
MmioRead16 for Big-Endian modules.
@param Address The MMIO register to read.
@return The value read.
**/
STATIC
UINT16
EFIAPI
SwapMmioRead16 (
IN UINTN Address
)
{
return SwapBytes16 (MmioRead16 (Address));
}
/**
MmioRead32 for Big-Endian modules.
@param Address The MMIO register to read.
@return The value read.
**/
STATIC
UINT32
EFIAPI
SwapMmioRead32 (
IN UINTN Address
)
{
return SwapBytes32 (MmioRead32 (Address));
}
/**
MmioRead64 for Big-Endian modules.
@param Address The MMIO register to read.
@return The value read.
**/
STATIC
UINT64
EFIAPI
SwapMmioRead64 (
IN UINTN Address
)
{
return SwapBytes64 (MmioRead64 (Address));
}
/**
MmioWrite16 for Big-Endian modules.
@param Address The MMIO register to write.
@param Value The value to write to the MMIO register.
**/
STATIC
UINT16
EFIAPI
SwapMmioWrite16 (
IN UINTN Address,
IN UINT16 Value
)
{
return MmioWrite16 (Address, SwapBytes16 (Value));
}
/**
MmioWrite32 for Big-Endian modules.
@param Address The MMIO register to write.
@param Value The value to write to the MMIO register.
**/
STATIC
UINT32
EFIAPI
SwapMmioWrite32 (
IN UINTN Address,
IN UINT32 Value
)
{
return MmioWrite32 (Address, SwapBytes32 (Value));
}
/**
MmioWrite64 for Big-Endian modules.
@param Address The MMIO register to write.
@param Value The value to write to the MMIO register.
**/
STATIC
UINT64
EFIAPI
SwapMmioWrite64 (
IN UINTN Address,
IN UINT64 Value
)
{
return MmioWrite64 (Address, SwapBytes64 (Value));
}
/**
MmioAndThenOr16 for Big-Endian modules.
@param Address The MMIO register to write.
@param AndData The value to AND with the read value from the MMIO register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the MMIO register.
**/
STATIC
UINT16
EFIAPI
SwapMmioAndThenOr16 (
IN UINTN Address,
IN UINT16 AndData,
IN UINT16 OrData
)
{
AndData = SwapBytes16 (AndData);
OrData = SwapBytes16 (OrData);
return MmioAndThenOr16 (Address, AndData, OrData);
}
/**
MmioAndThenOr32 for Big-Endian modules.
@param Address The MMIO register to write.
@param AndData The value to AND with the read value from the MMIO register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the MMIO register.
**/
STATIC
UINT32
EFIAPI
SwapMmioAndThenOr32 (
IN UINTN Address,
IN UINT32 AndData,
IN UINT32 OrData
)
{
AndData = SwapBytes32 (AndData);
OrData = SwapBytes32 (OrData);
return MmioAndThenOr32 (Address, AndData, OrData);
}
/**
MmioAndThenOr64 for Big-Endian modules.
@param Address The MMIO register to write.
@param AndData The value to AND with the read value from the MMIO register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the MMIO register.
**/
STATIC
UINT64
EFIAPI
SwapMmioAndThenOr64 (
IN UINTN Address,
IN UINT64 AndData,
IN UINT64 OrData
)
{
AndData = SwapBytes64 (AndData);
OrData = SwapBytes64 (OrData);
return MmioAndThenOr64 (Address, AndData, OrData);
}
/**
MmioOr16 for Big-Endian modules.
@param Address The MMIO register to write.
@param OrData The value to OR with the read value from the MMIO register.
@return The value written back to the MMIO register.
**/
STATIC
UINT16
EFIAPI
SwapMmioOr16 (
IN UINTN Address,
IN UINT16 OrData
)
{
return MmioOr16 (Address, SwapBytes16 (OrData));
}
/**
MmioOr32 for Big-Endian modules.
@param Address The MMIO register to write.
@param OrData The value to OR with the read value from the MMIO register.
@return The value written back to the MMIO register.
**/
STATIC
UINT32
EFIAPI
SwapMmioOr32 (
IN UINTN Address,
IN UINT32 OrData
)
{
return MmioOr32 (Address, SwapBytes32 (OrData));
}
/**
MmioOr64 for Big-Endian modules.
@param Address The MMIO register to write.
@param OrData The value to OR with the read value from the MMIO register.
@return The value written back to the MMIO register.
**/
STATIC
UINT64
EFIAPI
SwapMmioOr64 (
IN UINTN Address,
IN UINT64 OrData
)
{
return MmioOr64 (Address, SwapBytes64 (OrData));
}
/**
MmioAnd16 for Big-Endian modules.
@param Address The MMIO register to write.
@param AndData The value to AND with the read value from the MMIO register.
@return The value written back to the MMIO register.
**/
STATIC
UINT16
EFIAPI
SwapMmioAnd16 (
IN UINTN Address,
IN UINT16 AndData
)
{
return MmioAnd16 (Address, SwapBytes16 (AndData));
}
/**
MmioAnd32 for Big-Endian modules.
@param Address The MMIO register to write.
@param AndData The value to AND with the read value from the MMIO register.
@return The value written back to the MMIO register.
**/
STATIC
UINT32
EFIAPI
SwapMmioAnd32 (
IN UINTN Address,
IN UINT32 AndData
)
{
return MmioAnd32 (Address, SwapBytes32 (AndData));
}
/**
MmioAnd64 for Big-Endian modules.
@param Address The MMIO register to write.
@param AndData The value to AND with the read value from the MMIO register.
@return The value written back to the MMIO register.
**/
STATIC
UINT64
EFIAPI
SwapMmioAnd64 (
IN UINTN Address,
IN UINT64 AndData
)
{
return MmioAnd64 (Address, SwapBytes64 (AndData));
}
STATIC MMIO_OPERATIONS SwappingFunctions = {
SwapMmioRead16,
SwapMmioWrite16,
SwapMmioOr16,
SwapMmioAnd16,
SwapMmioAndThenOr16,
SwapMmioRead32,
SwapMmioWrite32,
SwapMmioOr32,
SwapMmioAnd32,
SwapMmioAndThenOr32,
SwapMmioRead64,
SwapMmioWrite64,
SwapMmioOr64,
SwapMmioAnd64,
SwapMmioAndThenOr64,
};
STATIC MMIO_OPERATIONS NonSwappingFunctions = {
MmioRead16,
MmioWrite16,
MmioOr16,
MmioAnd16,
MmioAndThenOr16,
MmioRead32,
MmioWrite32,
MmioOr32,
MmioAnd32,
MmioAndThenOr32,
MmioRead64,
MmioWrite64,
MmioOr64,
MmioAnd64,
MmioAndThenOr64,
};
/**
Function to return pointer to Mmio operations.
@param Swap Flag to tell if Swap is needed or not
on Mmio Operations.
@return Pointer to Mmio Operations.
**/
MMIO_OPERATIONS *
GetMmioOperations (BOOLEAN Swap) {
if (Swap) {
return &SwappingFunctions;
} else {
return &NonSwappingFunctions;
}
}
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