'-------------------------------------------------------------------------------
' Copyright (c) 2020-2021, Arm Limited and Contributors. All rights reserved.
'
' SPDX-License-Identifier: BSD-3-Clause
'
'-------------------------------------------------------------------------------

@startuml

class ffa_internal_api {
  .. SVC call ..
  + ffa_svc()
}

package "FF-A layer" {
  class ffa_api {
    .. Setup and discovery interfaces ..
    + ffa_version()
    + ffa_features()
    + ffa_rx_release()
    + ffa_rxtx_map()
    + ffa_rxtx_unmap()
    + ffa_partition_info_get()
    + ffa_id_get()

    .. CPU cycle management interfaces ..
    + ffa_msg_wait()

    .. Messaging interfaces ..
    + ffa_msg_send_direct_req()
    + ffa_msg_send_direct_resp()

    .. Memory management interfaces ..
    + ffa_mem_donate()
    + ffa_mem_donate_rxtx()
    + ffa_mem_lend()
    + ffa_mem_lend_rxtx()
    + ffa_mem_share()
    + ffa_mem_share_rxtx()
    + ffa_mem_retrieve_req()
    + ffa_mem_retrieve_req_rxtx()
    + ffa_mem_relinquish()
    + ffa_mem_reclaim()

    .. Interrupt handler definition ..
    + ffa_interrupt_handler()
  }

  class ffa_memory_descriptors {
    .. Transaction buffer handling ..
    + ffa_init_mem_transaction_buffer()

    .. Transaction descriptor ..
    + ffa_init_mem_transaction_desc()
    + ffa_get_mem_transaction_desc()

    .. Memory access descriptor ..
    + ffa_reserve_mem_access_desc()
    + ffa_add_mem_access_desc()
    + ffa_get_mem_access_desc_count()
    + ffa_get_mem_access_desc()

    .. Memory region ..
    + ffa_add_memory_region()
    + ffa_get_memory_region()
  }
}

package "SP layer" {
  class sp_rxtx {
    .. RXTX buffer handling ..
    + sp_rxtx_buffer_map()
    + sp_rxtx_buffer_unmap()
    + sp_rxtx_buffer_alignment_boundary_get()
    + sp_rxtx_buffer_rx_get()
    + sp_rxtx_buffer_tx_get()
  }

  class sp_memory_management {
    .. Donate ..
    + sp_memory_donate()
    + sp_memory_donate_dynamic()
    + sp_memory_donate_dynamic_is_supported()

    .. Lend ..
    + sp_memory_lend()
    + sp_memory_lend_dynamic()
    + sp_memory_lend_dynamic_is_supported()

    .. Share ..
    + sp_memory_share()
    + sp_memory_share_dynamic()
    + sp_memory_share_dynamic_is_supported()

    .. Retrieve ..
    + sp_memory_retrieve()
    + sp_memory_retrieve_dynamic()
    + sp_memory_retrieve_dynamic_is_supported()

    .. Relinquish ..
    + sp_memory_relinquish()

    .. Reclaim ..
    + sp_memory_reclaim()
  }
}


ffa_api -left-> ffa_internal_api

ffa_api -[hidden]-> ffa_memory_descriptors

sp_rxtx -left-> ffa_api
sp_memory_management --> ffa_api
sp_memory_management -left-> ffa_memory_descriptors
sp_memory_management -up-> sp_rxtx

@enduml