277 	struct spider_net_descr *descr;  in spider_net_free_chain()  local
279 	descr = chain->ring;  in spider_net_free_chain()
281 		descr->bus_addr = 0;  in spider_net_free_chain()
282 		descr->hwdescr->next_descr_addr = 0;  in spider_net_free_chain()
283 		descr = descr->next;  in spider_net_free_chain()
284 	} while (descr != chain->ring);  in spider_net_free_chain()
305 	struct spider_net_descr *descr;  in spider_net_init_chain()  local
318 	descr = chain->ring;  in spider_net_init_chain()
321 	for (i=0; i < chain->num_desc; i++, descr++, hwdescr++) {  in spider_net_init_chain()
325 		descr->hwdescr = hwdescr;  in spider_net_init_chain()
326 		descr->bus_addr = buf;  in spider_net_init_chain()
327 		descr->next = descr + 1;  in spider_net_init_chain()
328 		descr->prev = descr - 1;  in spider_net_init_chain()
333 	(descr-1)->next = chain->ring;  in spider_net_init_chain()
334 	chain->ring->prev = descr-1;  in spider_net_init_chain()
351 	struct spider_net_descr *descr;  in spider_net_free_rx_chain_contents()  local
353 	descr = card->rx_chain.head;  in spider_net_free_rx_chain_contents()
355 		if (descr->skb) {  in spider_net_free_rx_chain_contents()
356 			pci_unmap_single(card->pdev, descr->hwdescr->buf_addr,  in spider_net_free_rx_chain_contents()
359 			dev_kfree_skb(descr->skb);  in spider_net_free_rx_chain_contents()
360 			descr->skb = NULL;  in spider_net_free_rx_chain_contents()
362 		descr = descr->next;  in spider_net_free_rx_chain_contents()
363 	} while (descr != card->rx_chain.head);  in spider_net_free_rx_chain_contents()
378 			    struct spider_net_descr *descr)  in spider_net_prepare_rx_descr()  argument
380 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_prepare_rx_descr()
392 	descr->skb = netdev_alloc_skb(card->netdev,  in spider_net_prepare_rx_descr()
394 	if (!descr->skb) {  in spider_net_prepare_rx_descr()
407 	offset = ((unsigned long)descr->skb->data) &  in spider_net_prepare_rx_descr()
410 		skb_reserve(descr->skb, SPIDER_NET_RXBUF_ALIGN - offset);  in spider_net_prepare_rx_descr()
412 	buf = pci_map_single(card->pdev, descr->skb->data,  in spider_net_prepare_rx_descr()
415 		dev_kfree_skb_any(descr->skb);  in spider_net_prepare_rx_descr()
416 		descr->skb = NULL;  in spider_net_prepare_rx_descr()
516 	struct spider_net_descr *descr = start;  in spider_net_alloc_rx_skbs()  local
520 		descr->prev->hwdescr->next_descr_addr = descr->bus_addr;  in spider_net_alloc_rx_skbs()
521 		descr = descr->next;  in spider_net_alloc_rx_skbs()
522 	} while (descr != start);  in spider_net_alloc_rx_skbs()
645 	struct spider_net_descr *descr;  in spider_net_prepare_tx_descr()  local
660 	descr = card->tx_chain.head;  in spider_net_prepare_tx_descr()
661 	if (descr->next == chain->tail->prev) {  in spider_net_prepare_tx_descr()
666 	hwdescr = descr->hwdescr;  in spider_net_prepare_tx_descr()
667 	chain->head = descr->next;  in spider_net_prepare_tx_descr()
669 	descr->skb = skb;  in spider_net_prepare_tx_descr()
691 	descr->prev->hwdescr->next_descr_addr = descr->bus_addr;  in spider_net_prepare_tx_descr()
700 	struct spider_net_descr *descr = card->tx_chain.tail;  in spider_net_set_low_watermark()  local
709 	while (descr != card->tx_chain.head) {  in spider_net_set_low_watermark()
710 		status = descr->hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_NOT_IN_USE;  in spider_net_set_low_watermark()
713 		descr = descr->next;  in spider_net_set_low_watermark()
722 	descr = card->tx_chain.tail;  in spider_net_set_low_watermark()
725 		descr = descr->next;  in spider_net_set_low_watermark()
729 	descr->hwdescr->dmac_cmd_status |= SPIDER_NET_DESCR_TXDESFLG;  in spider_net_set_low_watermark()
730 	if (card->low_watermark && card->low_watermark != descr) {  in spider_net_set_low_watermark()
735 	card->low_watermark = descr;  in spider_net_set_low_watermark()
757 	struct spider_net_descr *descr;  in spider_net_release_tx_chain()  local
770 		descr = chain->tail;  in spider_net_release_tx_chain()
771 		hwdescr = descr->hwdescr;  in spider_net_release_tx_chain()
777 			dev->stats.tx_bytes += descr->skb->len;  in spider_net_release_tx_chain()
808 		chain->tail = descr->next;  in spider_net_release_tx_chain()
810 		skb = descr->skb;  in spider_net_release_tx_chain()
811 		descr->skb = NULL;  in spider_net_release_tx_chain()
839 	struct spider_net_descr *descr;  in spider_net_kick_tx_dma()  local
845 	descr = card->tx_chain.tail;  in spider_net_kick_tx_dma()
847 		if (spider_net_get_descr_status(descr->hwdescr) ==  in spider_net_kick_tx_dma()
850 					descr->bus_addr);  in spider_net_kick_tx_dma()
855 		if (descr == card->tx_chain.head)  in spider_net_kick_tx_dma()
857 		descr = descr->next;  in spider_net_kick_tx_dma()
938 spider_net_pass_skb_up(struct spider_net_descr *descr,  in spider_net_pass_skb_up()  argument
941 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_pass_skb_up()
942 	struct sk_buff *skb = descr->skb;  in spider_net_pass_skb_up()
980 	struct spider_net_descr *descr= start;  in show_rx_chain()  local
1002 		hwd = descr->hwdescr;  in show_rx_chain()
1003 		off = descr - chain->ring;  in show_rx_chain()
1006 		if (descr == chain->head)  in show_rx_chain()
1010 		if (curr_desc == descr->bus_addr)  in show_rx_chain()
1014 		if (next_desc == descr->bus_addr)  in show_rx_chain()
1032 		descr = descr->next;  in show_rx_chain()
1033 	} while (descr != start);  in show_rx_chain()
1040 	descr = start;  in show_rx_chain()
1043 		struct spider_net_hw_descr *hwd = descr->hwdescr;  in show_rx_chain()
1045 		cnt = descr - chain->ring;  in show_rx_chain()
1047 		         cnt, status, descr->skb);  in show_rx_chain()
1049 		         descr->bus_addr, hwd->buf_addr, hwd->buf_size);  in show_rx_chain()
1058 		descr = descr->next;  in show_rx_chain()
1059 	} while (descr != start);  in show_rx_chain()
1077 	struct spider_net_descr *descr;  in spider_net_resync_head_ptr()  local
1081 	descr = chain->head;  in spider_net_resync_head_ptr()
1082 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1089 	descr = chain->head;  in spider_net_resync_head_ptr()
1090 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1093 		descr = descr->next;  in spider_net_resync_head_ptr()
1094 		status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1096 	chain->head = descr;  in spider_net_resync_head_ptr()
1104 	struct spider_net_descr *descr;  in spider_net_resync_tail_ptr()  local
1108 	descr = chain->tail;  in spider_net_resync_tail_ptr()
1109 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_tail_ptr()
1114 		descr = descr->next;  in spider_net_resync_tail_ptr()
1115 		status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_tail_ptr()
1117 	chain->tail = descr;  in spider_net_resync_tail_ptr()
1140 	struct spider_net_descr *descr = chain->tail;  in spider_net_decode_one_descr()  local
1141 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_decode_one_descr()
1153 	chain->tail = descr->next;  in spider_net_decode_one_descr()
1200 		pr_err("which=%ld\n", descr - card->rx_chain.ring);  in spider_net_decode_one_descr()
1207 	spider_net_pass_skb_up(descr, card);  in spider_net_decode_one_descr()
1208 	descr->skb = NULL;  in spider_net_decode_one_descr()
1215 	dev_kfree_skb_irq(descr->skb);  in spider_net_decode_one_descr()
1216 	descr->skb = NULL;  in spider_net_decode_one_descr()