291 	struct spider_net_descr *descr;  in spider_net_free_chain()  local
293 	descr = chain->ring;  in spider_net_free_chain()
295 		descr->bus_addr = 0;  in spider_net_free_chain()
296 		descr->hwdescr->next_descr_addr = 0;  in spider_net_free_chain()
297 		descr = descr->next;  in spider_net_free_chain()
298 	} while (descr != chain->ring);  in spider_net_free_chain()
319 	struct spider_net_descr *descr;  in spider_net_init_chain()  local
334 	descr = chain->ring;  in spider_net_init_chain()
337 	for (i=0; i < chain->num_desc; i++, descr++, hwdescr++) {  in spider_net_init_chain()
341 		descr->hwdescr = hwdescr;  in spider_net_init_chain()
342 		descr->bus_addr = buf;  in spider_net_init_chain()
343 		descr->next = descr + 1;  in spider_net_init_chain()
344 		descr->prev = descr - 1;  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()
367 	struct spider_net_descr *descr;  in spider_net_free_rx_chain_contents()  local
369 	descr = card->rx_chain.head;  in spider_net_free_rx_chain_contents()
371 		if (descr->skb) {  in spider_net_free_rx_chain_contents()
372 			pci_unmap_single(card->pdev, descr->hwdescr->buf_addr,  in spider_net_free_rx_chain_contents()
375 			dev_kfree_skb(descr->skb);  in spider_net_free_rx_chain_contents()
376 			descr->skb = NULL;  in spider_net_free_rx_chain_contents()
378 		descr = descr->next;  in spider_net_free_rx_chain_contents()
379 	} while (descr != card->rx_chain.head);  in spider_net_free_rx_chain_contents()
394 			    struct spider_net_descr *descr)  in spider_net_prepare_rx_descr()  argument
396 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_prepare_rx_descr()
408 	descr->skb = netdev_alloc_skb(card->netdev,  in spider_net_prepare_rx_descr()
410 	if (!descr->skb) {  in spider_net_prepare_rx_descr()
423 	offset = ((unsigned long)descr->skb->data) &  in spider_net_prepare_rx_descr()
426 		skb_reserve(descr->skb, SPIDER_NET_RXBUF_ALIGN - offset);  in spider_net_prepare_rx_descr()
428 	buf = pci_map_single(card->pdev, descr->skb->data,  in spider_net_prepare_rx_descr()
431 		dev_kfree_skb_any(descr->skb);  in spider_net_prepare_rx_descr()
432 		descr->skb = NULL;  in spider_net_prepare_rx_descr()
532 	struct spider_net_descr *descr = start;  in spider_net_alloc_rx_skbs()  local
536 		descr->prev->hwdescr->next_descr_addr = descr->bus_addr;  in spider_net_alloc_rx_skbs()
537 		descr = descr->next;  in spider_net_alloc_rx_skbs()
538 	} while (descr != start);  in spider_net_alloc_rx_skbs()
662 	struct spider_net_descr *descr;  in spider_net_prepare_tx_descr()  local
677 	descr = card->tx_chain.head;  in spider_net_prepare_tx_descr()
678 	if (descr->next == chain->tail->prev) {  in spider_net_prepare_tx_descr()
683 	hwdescr = descr->hwdescr;  in spider_net_prepare_tx_descr()
684 	chain->head = descr->next;  in spider_net_prepare_tx_descr()
686 	descr->skb = skb;  in spider_net_prepare_tx_descr()
708 	descr->prev->hwdescr->next_descr_addr = descr->bus_addr;  in spider_net_prepare_tx_descr()
717 	struct spider_net_descr *descr = card->tx_chain.tail;  in spider_net_set_low_watermark()  local
726 	while (descr != card->tx_chain.head) {  in spider_net_set_low_watermark()
727 		status = descr->hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_NOT_IN_USE;  in spider_net_set_low_watermark()
730 		descr = descr->next;  in spider_net_set_low_watermark()
739 	descr = card->tx_chain.tail;  in spider_net_set_low_watermark()
742 		descr = descr->next;  in spider_net_set_low_watermark()
746 	descr->hwdescr->dmac_cmd_status |= SPIDER_NET_DESCR_TXDESFLG;  in spider_net_set_low_watermark()
747 	if (card->low_watermark && card->low_watermark != descr) {  in spider_net_set_low_watermark()
752 	card->low_watermark = descr;  in spider_net_set_low_watermark()
774 	struct spider_net_descr *descr;  in spider_net_release_tx_chain()  local
787 		descr = chain->tail;  in spider_net_release_tx_chain()
788 		hwdescr = descr->hwdescr;  in spider_net_release_tx_chain()
794 			dev->stats.tx_bytes += descr->skb->len;  in spider_net_release_tx_chain()
824 		chain->tail = descr->next;  in spider_net_release_tx_chain()
826 		skb = descr->skb;  in spider_net_release_tx_chain()
827 		descr->skb = NULL;  in spider_net_release_tx_chain()
855 	struct spider_net_descr *descr;  in spider_net_kick_tx_dma()  local
861 	descr = card->tx_chain.tail;  in spider_net_kick_tx_dma()
863 		if (spider_net_get_descr_status(descr->hwdescr) ==  in spider_net_kick_tx_dma()
866 					descr->bus_addr);  in spider_net_kick_tx_dma()
871 		if (descr == card->tx_chain.head)  in spider_net_kick_tx_dma()
873 		descr = descr->next;  in spider_net_kick_tx_dma()
953 spider_net_pass_skb_up(struct spider_net_descr *descr,  in spider_net_pass_skb_up()  argument
956 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_pass_skb_up()
957 	struct sk_buff *skb = descr->skb;  in spider_net_pass_skb_up()
995 	struct spider_net_descr *descr= start;  in show_rx_chain()  local
1017 		hwd = descr->hwdescr;  in show_rx_chain()
1018 		off = descr - chain->ring;  in show_rx_chain()
1021 		if (descr == chain->head)  in show_rx_chain()
1025 		if (curr_desc == descr->bus_addr)  in show_rx_chain()
1029 		if (next_desc == descr->bus_addr)  in show_rx_chain()
1047 		descr = descr->next;  in show_rx_chain()
1048 	} while (descr != start);  in show_rx_chain()
1055 	descr = start;  in show_rx_chain()
1058 		struct spider_net_hw_descr *hwd = descr->hwdescr;  in show_rx_chain()
1060 		cnt = descr - chain->ring;  in show_rx_chain()
1062 		         cnt, status, descr->skb);  in show_rx_chain()
1064 		         descr->bus_addr, hwd->buf_addr, hwd->buf_size);  in show_rx_chain()
1073 		descr = descr->next;  in show_rx_chain()
1074 	} while (descr != start);  in show_rx_chain()
1092 	struct spider_net_descr *descr;  in spider_net_resync_head_ptr()  local
1096 	descr = chain->head;  in spider_net_resync_head_ptr()
1097 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1104 	descr = chain->head;  in spider_net_resync_head_ptr()
1105 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1108 		descr = descr->next;  in spider_net_resync_head_ptr()
1109 		status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1111 	chain->head = descr;  in spider_net_resync_head_ptr()
1119 	struct spider_net_descr *descr;  in spider_net_resync_tail_ptr()  local
1123 	descr = chain->tail;  in spider_net_resync_tail_ptr()
1124 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_tail_ptr()
1129 		descr = descr->next;  in spider_net_resync_tail_ptr()
1130 		status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_tail_ptr()
1132 	chain->tail = descr;  in spider_net_resync_tail_ptr()
1155 	struct spider_net_descr *descr = chain->tail;  in spider_net_decode_one_descr()  local
1156 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_decode_one_descr()
1168 	chain->tail = descr->next;  in spider_net_decode_one_descr()
1215 		pr_err("which=%ld\n", descr - card->rx_chain.ring);  in spider_net_decode_one_descr()
1222 	spider_net_pass_skb_up(descr, card);  in spider_net_decode_one_descr()
1223 	descr->skb = NULL;  in spider_net_decode_one_descr()
1230 	dev_kfree_skb_irq(descr->skb);  in spider_net_decode_one_descr()
1231 	descr->skb = NULL;  in spider_net_decode_one_descr()