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