73 	struct tn40_rxdb *db;  in tn40_rxdb_alloc()  local
76 	db = vzalloc(size);  in tn40_rxdb_alloc()
77 	if (db) {  in tn40_rxdb_alloc()
78 		db->stack = (int *)(db + 1);  in tn40_rxdb_alloc()
79 		db->elems = (void *)(db->stack + nelem);  in tn40_rxdb_alloc()
80 		db->nelem = nelem;  in tn40_rxdb_alloc()
81 		db->top = nelem;  in tn40_rxdb_alloc()
84 			db->stack[i] = nelem - i - 1;  in tn40_rxdb_alloc()
86 	return db;  in tn40_rxdb_alloc()
89 static void tn40_rxdb_free(struct tn40_rxdb *db)  in tn40_rxdb_free()  argument
91 	vfree(db);  in tn40_rxdb_free()
94 static int tn40_rxdb_alloc_elem(struct tn40_rxdb *db)  in tn40_rxdb_alloc_elem()  argument
96 	return db->stack[--db->top];  in tn40_rxdb_alloc_elem()
99 static void *tn40_rxdb_addr_elem(struct tn40_rxdb *db, unsigned int n)  in tn40_rxdb_addr_elem()  argument
101 	return db->elems + n;  in tn40_rxdb_addr_elem()
104 static int tn40_rxdb_available(struct tn40_rxdb *db)  in tn40_rxdb_available()  argument
106 	return db->top;  in tn40_rxdb_available()
109 static void tn40_rxdb_free_elem(struct tn40_rxdb *db, unsigned int n)  in tn40_rxdb_free_elem()  argument
111 	db->stack[db->top++] = n;  in tn40_rxdb_free_elem()
178 	struct tn40_rxdb *db = priv->rxdb0;  in tn40_rx_free_buffers()  local
182 	netdev_dbg(priv->ndev, "total =%d free =%d busy =%d\n", db->nelem,  in tn40_rx_free_buffers()
183 		   tn40_rxdb_available(db),  in tn40_rx_free_buffers()
184 		   db->nelem - tn40_rxdb_available(db));  in tn40_rx_free_buffers()
186 	for (i = 0; i < db->nelem; i++) {  in tn40_rx_free_buffers()
187 		dm = tn40_rxdb_addr_elem(db, i);  in tn40_rx_free_buffers()
243 	struct tn40_rxdb *db = priv->rxdb0;  in tn40_rx_alloc_buffers()  local
248 	dno = tn40_rxdb_available(db) - 1;  in tn40_rx_alloc_buffers()
254 		idx = tn40_rxdb_alloc_elem(db);  in tn40_rx_alloc_buffers()
256 		dm = tn40_rxdb_addr_elem(db, idx);  in tn40_rx_alloc_buffers()
289 	struct tn40_rxdb *db = NULL;  in tn40_rx_receive()  local
303 		db = priv->rxdb0;  in tn40_rx_receive()
363 		dm = tn40_rxdb_addr_elem(db, idx);  in tn40_rx_receive()
397 		tn40_rxdb_free_elem(db, idx);  in tn40_rx_receive()
458 static void tn40_do_tx_db_ptr_next(struct tn40_txdb *db,  in tn40_do_tx_db_ptr_next()  argument
462 	if (unlikely(*pptr == db->end))  in tn40_do_tx_db_ptr_next()
463 		*pptr = db->start;  in tn40_do_tx_db_ptr_next()
466 static void tn40_tx_db_inc_rptr(struct tn40_txdb *db)  in tn40_tx_db_inc_rptr()  argument
468 	tn40_do_tx_db_ptr_next(db, &db->rptr);  in tn40_tx_db_inc_rptr()
471 static void tn40_tx_db_inc_wptr(struct tn40_txdb *db)  in tn40_tx_db_inc_wptr()  argument
473 	tn40_do_tx_db_ptr_next(db, &db->wptr);  in tn40_tx_db_inc_wptr()
548 static void tn40_txdb_set(struct tn40_txdb *db, dma_addr_t dma, int len)  in tn40_txdb_set()  argument
550 	db->wptr->len = len;  in tn40_txdb_set()
551 	db->wptr->addr.dma = dma;  in tn40_txdb_set()
580 	struct tn40_txdb *db = &priv->txdb;  in tn40_tx_map_skb()  local
601 	tn40_txdb_set(db, dma, len);  in tn40_tx_map_skb()
602 	tn40_pbl_set(pbl++, db->wptr->addr.dma, db->wptr->len);  in tn40_tx_map_skb()
603 	*pkt_len = db->wptr->len;  in tn40_tx_map_skb()
620 		tn40_tx_db_inc_wptr(db);  in tn40_tx_map_skb()
621 		tn40_txdb_set(db, info[i].dma, info[i].size);  in tn40_tx_map_skb()
622 		tn40_pbl_set(pbl++, db->wptr->addr.dma, db->wptr->len);  in tn40_tx_map_skb()
623 		*pkt_len += db->wptr->len;  in tn40_tx_map_skb()
631 	tn40_tx_db_inc_wptr(db);  in tn40_tx_map_skb()
632 	db->wptr->len = -tn40_txd_sizes[nr_frags].bytes;  in tn40_tx_map_skb()
633 	db->wptr->addr.skb = skb;  in tn40_tx_map_skb()
634 	tn40_tx_db_inc_wptr(db);  in tn40_tx_map_skb()
638 	dma_unmap_page(&priv->pdev->dev, db->wptr->addr.dma, db->wptr->len,  in tn40_tx_map_skb()
821 	struct tn40_txdb *db = &priv->txdb;  in tn40_tx_cleanup()  local
833 			dma_addr_t addr = db->rptr->addr.dma;  in tn40_tx_cleanup()
834 			size_t size =  db->rptr->len;  in tn40_tx_cleanup()
840 			tn40_tx_db_inc_rptr(db);  in tn40_tx_cleanup()
841 		} while (db->rptr->len > 0);  in tn40_tx_cleanup()
842 		tx_level -= db->rptr->len; /* '-' Because the len is negative */  in tn40_tx_cleanup()
845 		dev_kfree_skb_any(db->rptr->addr.skb);  in tn40_tx_cleanup()
847 			   db->rptr->addr.skb, -db->rptr->len);  in tn40_tx_cleanup()
848 		tn40_tx_db_inc_rptr(db);  in tn40_tx_cleanup()
875 	struct tn40_txdb *db = &priv->txdb;  in tn40_tx_free_skbs()  local
877 	while (db->rptr != db->wptr) {  in tn40_tx_free_skbs()
878 		if (likely(db->rptr->len))  in tn40_tx_free_skbs()
879 			dma_unmap_page(&priv->pdev->dev, db->rptr->addr.dma,  in tn40_tx_free_skbs()
880 				       db->rptr->len, DMA_TO_DEVICE);  in tn40_tx_free_skbs()
882 			dev_kfree_skb(db->rptr->addr.skb);  in tn40_tx_free_skbs()
883 		tn40_tx_db_inc_rptr(db);  in tn40_tx_free_skbs()