289 		      struct spider_net_descr_chain *chain)  in spider_net_free_chain()  argument
293 	descr = chain->ring;  in spider_net_free_chain()
298 	} while (descr != chain->ring);  in spider_net_free_chain()
300 	dma_free_coherent(&card->pdev->dev, chain->num_desc,  in spider_net_free_chain()
301 	    chain->hwring, chain->dma_addr);  in spider_net_free_chain()
316 		       struct spider_net_descr_chain *chain)  in spider_net_init_chain()  argument
324 	alloc_size = chain->num_desc * sizeof(struct spider_net_hw_descr);  in spider_net_init_chain()
326 	chain->hwring = dma_alloc_coherent(&card->pdev->dev, alloc_size,  in spider_net_init_chain()
327 					   &chain->dma_addr, GFP_KERNEL);  in spider_net_init_chain()
328 	if (!chain->hwring)  in spider_net_init_chain()
331 	memset(chain->ring, 0, chain->num_desc * sizeof(struct spider_net_descr));  in spider_net_init_chain()
334 	descr = chain->ring;  in spider_net_init_chain()
335 	hwdescr = chain->hwring;  in spider_net_init_chain()
336 	buf = chain->dma_addr;  in spider_net_init_chain()
337 	for (i=0; i < chain->num_desc; i++, descr++, hwdescr++) {  in spider_net_init_chain()
349 	(descr-1)->next = chain->ring;  in spider_net_init_chain()
350 	chain->ring->prev = descr-1;  in spider_net_init_chain()
352 	spin_lock_init(&chain->lock);  in spider_net_init_chain()
353 	chain->head = chain->ring;  in spider_net_init_chain()
354 	chain->tail = chain->ring;  in spider_net_init_chain()
501 	struct spider_net_descr_chain *chain = &card->rx_chain;  in spider_net_refill_rx_chain()  local
508 	if (!spin_trylock_irqsave(&chain->lock, flags))  in spider_net_refill_rx_chain()
511 	while (spider_net_get_descr_status(chain->head->hwdescr) ==  in spider_net_refill_rx_chain()
513 		if (spider_net_prepare_rx_descr(card, chain->head))  in spider_net_refill_rx_chain()
515 		chain->head = chain->head->next;  in spider_net_refill_rx_chain()
518 	spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_refill_rx_chain()
530 	struct spider_net_descr_chain *chain = &card->rx_chain;  in spider_net_alloc_rx_skbs()  local
531 	struct spider_net_descr *start = chain->tail;  in spider_net_alloc_rx_skbs()
543 	if (spider_net_prepare_rx_descr(card, chain->head))  in spider_net_alloc_rx_skbs()
546 		chain->head = chain->head->next;  in spider_net_alloc_rx_skbs()
661 	struct spider_net_descr_chain *chain = &card->tx_chain;  in spider_net_prepare_tx_descr()  local
676 	spin_lock_irqsave(&chain->lock, flags);  in spider_net_prepare_tx_descr()
678 	if (descr->next == chain->tail->prev) {  in spider_net_prepare_tx_descr()
679 		spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_prepare_tx_descr()
684 	chain->head = descr->next;  in spider_net_prepare_tx_descr()
694 	spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_prepare_tx_descr()
773 	struct spider_net_descr_chain *chain = &card->tx_chain;  in spider_net_release_tx_chain()  local
782 		spin_lock_irqsave(&chain->lock, flags);  in spider_net_release_tx_chain()
783 		if (chain->tail == chain->head) {  in spider_net_release_tx_chain()
784 			spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_release_tx_chain()
787 		descr = chain->tail;  in spider_net_release_tx_chain()
799 				spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_release_tx_chain()
819 				spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_release_tx_chain()
824 		chain->tail = descr->next;  in spider_net_release_tx_chain()
829 		spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_release_tx_chain()
993 	struct spider_net_descr_chain *chain = &card->rx_chain;  in show_rx_chain()  local
994 	struct spider_net_descr *start= chain->tail;  in show_rx_chain()
1003 	int off = start - chain->ring;  in show_rx_chain()
1007 		chain->num_desc);  in show_rx_chain()
1018 		off = descr - chain->ring;  in show_rx_chain()
1021 		if (descr == chain->head)  in show_rx_chain()
1037 			int from = (chain->num_desc + off - cnt) % chain->num_desc;  in show_rx_chain()
1038 			int to = (chain->num_desc + off - 1) % chain->num_desc;  in show_rx_chain()
1060 		cnt = descr - chain->ring;  in show_rx_chain()
1091 	struct spider_net_descr_chain *chain = &card->rx_chain;  in spider_net_resync_head_ptr()  local
1096 	descr = chain->head;  in spider_net_resync_head_ptr()
1102 	spin_lock_irqsave(&chain->lock, flags);  in spider_net_resync_head_ptr()
1104 	descr = chain->head;  in spider_net_resync_head_ptr()
1106 	for (i=0; i<chain->num_desc; i++) {  in spider_net_resync_head_ptr()
1111 	chain->head = descr;  in spider_net_resync_head_ptr()
1113 	spin_unlock_irqrestore(&chain->lock, flags);  in spider_net_resync_head_ptr()
1118 	struct spider_net_descr_chain *chain = &card->rx_chain;  in spider_net_resync_tail_ptr()  local
1123 	descr = chain->tail;  in spider_net_resync_tail_ptr()
1126 	for (i=0; i<chain->num_desc; i++) {  in spider_net_resync_tail_ptr()
1132 	chain->tail = descr;  in spider_net_resync_tail_ptr()
1134 	if ((i == chain->num_desc) || (i == 0))  in spider_net_resync_tail_ptr()
1154 	struct spider_net_descr_chain *chain = &card->rx_chain;  in spider_net_decode_one_descr()  local
1155 	struct spider_net_descr *descr = chain->tail;  in spider_net_decode_one_descr()
1168 	chain->tail = descr->next;  in spider_net_decode_one_descr()