+struct mthca_db_page {
+ DECLARE_BITMAP(used, MTHCA_DB_REC_PER_PAGE);
+ __be64 *db_rec;
+ dma_addr_t mapping;
+};
+
+struct mthca_db_table {
+ int npages;
+ int max_group1;
+ int min_group2;
+ struct mthca_db_page *page;
+ struct mutex mutex;
+};
+
+enum mthca_db_type {
+ MTHCA_DB_TYPE_INVALID = 0x0,
+ MTHCA_DB_TYPE_CQ_SET_CI = 0x1,
+ MTHCA_DB_TYPE_CQ_ARM = 0x2,
+ MTHCA_DB_TYPE_SQ = 0x3,
+ MTHCA_DB_TYPE_RQ = 0x4,
+ MTHCA_DB_TYPE_SRQ = 0x5,
+ MTHCA_DB_TYPE_GROUP_SEP = 0x7
+};
+
+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);
+
+int mthca_init_db_tab(struct mthca_dev *dev);
+void mthca_cleanup_db_tab(struct mthca_dev *dev);
+int mthca_alloc_db(struct mthca_dev *dev, enum mthca_db_type type,
+ u32 qn, __be32 **db);
+void mthca_free_db(struct mthca_dev *dev, int type, int db_index);
+