MdeModulePkg/Library/ArmFfaLib/ArmFfaRxTxMap.h

/** @file
  Arm FF-A ns common library Header file

  Copyright (c) 2024, Arm Limited. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

  @par Glossary:
     - FF-A - Firmware Framework for Arm A-profile
     - spmc - Secure Partition Manager Core
     - spmd - Secure Partition Manager Dispatcher

  @par Reference(s):
     - Arm Firmware Framework for Arm A-Profile [https://developer.arm.com/documentation/den0077/latest]

**/

#ifndef ARM_FFA_RX_TX_MAP_LIB_H_
#define ARM_FFA_RX_TX_MAP_LIB_H_

#include <Guid/ArmFfaRxTxBufferInfo.h>

/**
  Mapping Rx/Tx buffers.
  This function is only called in ArmFfaLibConstructor because
  Rx/Tx buffer is registered only once per partition.

  @retval EFI_SUCCESS
  @retval EFI_ALREADY_STARTED     Rx/Tx buffer already mapped in PEI phase
  @retval EFI_OUT_OF_RESOURCE     Out of memory
  @retval EFI_INVALID_PARAMETER   Invalid alignment of Rx/Tx buffer
  @retval Others                  Error

**/
EFI_STATUS
EFIAPI
ArmFfaLibRxTxMap (
  IN VOID
  );

/**
  Unmap Rx/Tx buffer.
  This function is only called in Exit boot service because
  Rx/Tx buffer is registered only once per partition.

  @retval EFI_SUCCESS
  @retval EFI_INVALID_PARAMETERS               Already unregistered
  @retval EFI_UNSUPPORTED                      Not supported

**/
EFI_STATUS
EFIAPI
ArmFfaLibRxTxUnmap (
  IN VOID
  );

/**
  Update Rx/TX buffer information.

  @param  BufferInfo            Rx/Tx buffer information.

**/
VOID
EFIAPI
UpdateRxTxBufferInfo (
  OUT ARM_FFA_RX_TX_BUFFER_INFO  *BufferInfo
  );

/**
  Find Rx/TX buffer memory allocation hob.

  @param  UseGuid             Find MemoryAllocationHob using Guid.

  @retval MemoryAllocationHob
  @retval NULL                No memory allocation hob related to Rx/Tx buffer

**/
EFI_HOB_MEMORY_ALLOCATION *
EFIAPI
FindRxTxBufferAllocationHob (
  IN BOOLEAN  UseGuid
  );

/**
  Remap Rx/TX buffer with converted Rx/Tx Buffer address after
  using permanent memory.

  @param[out] BufferInfo    BufferInfo

  @retval EFI_SUCCESS       Success
  @retval EFI_NOT_FOUND     No memory allocation hob related to Rx/Tx buffer

**/
EFI_STATUS
EFIAPI
RemapFfaRxTxBuffer (
  IN OUT ARM_FFA_RX_TX_BUFFER_INFO  *BufferInfo
  );

#endif