diff --git a/include/services/el3_spmd_logical_sp.h b/include/services/el3_spmd_logical_sp.h
index 4725c15..dcbbfab 100644
--- a/include/services/el3_spmd_logical_sp.h
+++ b/include/services/el3_spmd_logical_sp.h
@@ -12,6 +12,7 @@
 /*******************************************************************************
  * Structure definition, typedefs & constants for the SPMD Logical Partitions.
  ******************************************************************************/
+typedef struct spmd_spm_core_context spmd_spm_core_context_t;
 
 /* Prototype for SPMD logical partition initializing function. */
 typedef int32_t (*ffa_spmd_lp_init_t)(void);
@@ -25,6 +26,17 @@
 	const char *debug_name;
 };
 
+struct ffa_value {
+	uint64_t func;
+	uint64_t arg1;
+	uint64_t arg2;
+	uint64_t arg3;
+	uint64_t arg4;
+	uint64_t arg5;
+	uint64_t arg6;
+	uint64_t arg7;
+};
+
 /* Convenience macro to declare a SPMD logical partition descriptor. */
 #define DECLARE_SPMD_LOGICAL_PARTITION(_name, _init, _sp_id, _uuid, _properties) \
 	static const struct spmd_lp_desc __partition_desc_ ## _name	    \
@@ -52,12 +64,36 @@
 
 static inline bool is_spmd_lp_id(unsigned int id)
 {
+#if ENABLE_SPMD_LP
 	return (id >= SPMD_LP_ID_START && id <= SPMD_LP_ID_END);
+#else
+	return false;
+#endif
+}
+
+static inline bool is_ffa_error(struct ffa_value *retval)
+{
+	return retval->func == FFA_ERROR;
+}
+
+static inline bool is_ffa_direct_msg_resp(struct ffa_value *retval)
+{
+	return (retval->func == FFA_MSG_SEND_DIRECT_RESP_SMC32) ||
+		(retval->func == FFA_MSG_SEND_DIRECT_RESP_SMC64);
 }
 
 void spmd_logical_sp_set_spmc_initialized(void);
 void spmc_logical_sp_set_spmc_failure(void);
 
 int32_t spmd_logical_sp_init(void);
+bool is_spmd_logical_sp_dir_req_in_progress(
+		spmd_spm_core_context_t *ctx);
+
+bool spmd_el3_ffa_msg_direct_req(uint64_t x1,
+				 uint64_t x2,
+				 uint64_t x3,
+				 uint64_t x4,
+				 void *handle,
+				 struct ffa_value *retval);
 
 #endif /* EL3_SPMD_LOGICAL_SP_H */