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TEEC_EXPORT TEEC_Result TEEC_InitializeContext(
    const char   *name,
    TEEC_Context *context);

TEEC_EXPORT TEEC_Result  TEEC_OpenSession (
    TEEC_Context    *context,
    TEEC_Session    *session,
    const TEEC_UUID *destination,
    uint32_t        connectionMethod,
    const void      *connectionData,
    TEEC_Operation  *operation,
    uint32_t        *returnOrigin);

TEEC_EXPORT TEEC_Result TEEC_InvokeCommand(
    TEEC_Session     *session,
    uint32_t         commandID,
    TEEC_Operation   *operation,
    uint32_t         *returnOrigin);

TEEC_EXPORT void  TEEC_CloseSession (
    TEEC_Session *session);

TEEC_EXPORT void  TEEC_FinalizeContext(
    TEEC_Context *context);

EXTERN_C TEE_Result TA_EXPORT TA_CreateEntryPoint(void);

EXTERN_C TEE_Result TA_EXPORT TA_OpenSessionEntryPoint(
        uint32_t    nParamTypes,
        TEE_Param   pParams[4],
        void**      ppSessionContext);

EXTERN_C TEE_Result TA_EXPORT TA_InvokeCommandEntryPoint(
        void*       pSessionContext,
        uint32_t    nCommandID,
        uint32_t    nParamTypes,
        TEE_Param   pParams[4]);

EXTERN_C void TA_EXPORT TA_CloseSessionEntryPoint(
        void*       pSessionContext);

EXTERN_C void TA_EXPORT TA_DestroyEntryPoint(void);

TEEC_EXPORT TEEC_Result  TEEC_RegisterSharedMemory(
    TEEC_Context      *context,
    TEEC_SharedMemory *sharedMem);

TEEC_EXPORT TEEC_Result  TEEC_AllocateSharedMemory(
    TEEC_Context      *context,
    TEEC_SharedMemory *sharedMem);

TEEC_EXPORT void  TEEC_ReleaseSharedMemory (
    TEEC_SharedMemory *sharedMem);

/* Type definitions */
typedef struct TEEC_Context {
    TEEC_Context_IMP imp;
} TEEC_Context;

typedef struct TEEC_Session {
    TEEC_Session_IMP imp;
} TEEC_Session;

typedef struct TEEC_SharedMemory {
    union {
        void                *buffer;
        int                 fd;
    };
    size_t                  size;
    uint32_t                flags;
    TEEC_SharedMemory_IMP   imp;
} TEEC_SharedMemory;

typedef struct TEEC_Operation {
    uint32_t            started;
    uint32_t            paramTypes;
    TEEC_Parameter      params[4];
    TEEC_Operation_IMP  imp;
} TEEC_Operation;

typedef struct {
    uint32_t                    open_mode;
} TEEC_Context_IMP;

typedef struct {
    uint32_t                    sessionId;
    TEEC_Context_IMP            reserved1;
    void                        *reserved2_tci; // TCI used in tests for old versions
    bool                        reserved3;
    pthread_mutex_t             reserved4;
} TEEC_Session_IMP;

typedef struct {
    bool                        reserved;
} TEEC_SharedMemory_IMP;

typedef struct {
    void                        *reserved;
} TEEC_Operation_IMP;

typedef union {
    TEEC_TempMemoryReference        tmpref;
    TEEC_RegisteredMemoryReference  memref;
    TEEC_Value                      value;
} TEEC_Parameter;

typedef struct {
    void    *buffer;
    size_t  size;
} TEEC_TempMemoryReference;

typedef struct {
    TEEC_SharedMemory *parent;
    size_t  size;
    size_t  offset;
} TEEC_RegisteredMemoryReference;

/** Open a new session to a Trusted Application(Trustlet). The Trusted Application will be loaded from the memory buffer.
 *
 * Write MCP open message to buffer and notify Kinibi about the availability of a new command.
 * Waits till Kinibi responds with the new session ID (stored in the MCP buffer).
 *
 * @param [in,out] session On success, the session data will be returned.
 * @param [in] spid Service Provider ID(for Service provider trustlets otherwise ignored)
 * @param [in] trustedapp memory buffer containing the Trusted Application binary
 * @param [in] tLen length of the memory buffer containing the Trusted Application
 * @param [in] tci TCI buffer for communicating with the Trusted Application.
 * @param [in] tciLen Length of the TCI buffer. Maximum allowed value is MC_MAX_TCI_LEN.
 *
 * @return MC_DRV_OK if operation has been successfully completed.
 * @return MC_DRV_INVALID_PARAMETER if session parameter is invalid.
 * @return MC_DRV_ERR_UNKNOWN_DEVICE when device id is invalid.
 * @return MC_DRV_ERR_DAEMON_UNREACHABLE when problems with daemon socket occur.
 * @return MC_DRV_ERR_UNKNOWN_DEVICE when daemon returns an error.
 * @return MC_DRV_ERR_TRUSTED_APPLICATION_NOT_FOUND when Trusted Application cannot be loaded.
 */
__MC_CLIENT_LIB_API mcResult_t mcOpenTrustlet(
    mcSessionHandle_t   *session,
    mcSpid_t            spid,
    uint8_t             *trustedapp,
    uint32_t            tLen,
    uint8_t             *tci,
    uint32_t            tciLen
);

/** Wait for a notification issued by Kinibi for a specific session.
 *
 * @param [in] session The session the notification should correspond to.
 * @param [in] timeout Time in milliseconds to wait.
 *
 * @return MC_DRV_OK if notification is available.
 * @return MC_DRV_ERR_TIMEOUT if no notification arrived in time.
 * @return MC_DRV_INFO_NOTIFICATION if a problem with the session was encountered.
 * @return MC_DRV_ERR_NOTIFICATION if a problem with the socket occurred.
 * @return MC_DRV_INVALID_PARAMETER if a parameter is invalid.
 * @return MC_DRV_ERR_UNKNOWN_SESSION when session id is invalid.
 * @return MC_DRV_ERR_UNKNOWN_DEVICE when device id of session is invalid.
 */
__MC_CLIENT_LIB_API mcResult_t mcWaitNotification(
    mcSessionHandle_t   *session,
    int32_t             timeout
);

/** Notify a session.
 * Corresponding errors can only be received by mcWaitNotification().
 *
 * @param session The session to be notified.
 *
 * @return MC_DRV_OK if operation has been successfully completed.
 * @return MC_DRV_INVALID_PARAMETER if session parameter is invalid.
 * @return MC_DRV_ERR_UNKNOWN_SESSION when session id is invalid.
 * @return MC_DRV_ERR_UNKNOWN_DEVICE when device id of session is invalid.
 */
__MC_CLIENT_LIB_API mcResult_t mcNotify(
    mcSessionHandle_t   *session
);

/** Wait for a notification of the NWd.
 * the platform E_TLAPI_INVALID_TIMEOUT is returned.
 *
 * @param timeout milliseconds to wait
 *       TLAPI_NO_TIMEOUT => direct return
 *       TLAPI_INFINITE_TIMEOUT => wait infinitely
 * @return TLAPI_OK if notification has been received.
 */
_TLAPI_EXTERN_C tlApiResult_t tlApiWaitNotification(uint32_t timeout);

/** Notify the TrustletConnector about changes in the TCI message buffer.
 * tlApiNotify() returns when the notification is processed and the Trustlet can continue.
 *
 * @return TLAPI_OK if notification has been issued successfully.
 */
_TLAPI_EXTERN_C tlApiResult_t tlApiNotify(void);