+struct mthca_user_db_table;
+struct mthca_uar;
+
+int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
+ struct mthca_user_db_table *db_tab, int index, u64 uaddr);
+void mthca_unmap_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
+ struct mthca_user_db_table *db_tab, int index);
+struct mthca_user_db_table *mthca_init_user_db_tab(struct mthca_dev *dev);
+void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar,
+ struct mthca_user_db_table *db_tab);
+