279 	struct spider_net_descr *descr;  in spider_net_free_chain()  local
281 	descr = chain->ring;  in spider_net_free_chain()
283 		descr->bus_addr = 0;  in spider_net_free_chain()
284 		descr->hwdescr->next_descr_addr = 0;  in spider_net_free_chain()
285 		descr = descr->next;  in spider_net_free_chain()
286 	} while (descr != chain->ring);  in spider_net_free_chain()
307 	struct spider_net_descr *descr;  in spider_net_init_chain()  local
320 	descr = chain->ring;  in spider_net_init_chain()
323 	for (i=0; i < chain->num_desc; i++, descr++, hwdescr++) {  in spider_net_init_chain()
327 		descr->hwdescr = hwdescr;  in spider_net_init_chain()
328 		descr->bus_addr = buf;  in spider_net_init_chain()
329 		descr->next = descr + 1;  in spider_net_init_chain()
330 		descr->prev = descr - 1;  in spider_net_init_chain()
335 	(descr-1)->next = chain->ring;  in spider_net_init_chain()
336 	chain->ring->prev = descr-1;  in spider_net_init_chain()
353 	struct spider_net_descr *descr;  in spider_net_free_rx_chain_contents()  local
355 	descr = card->rx_chain.head;  in spider_net_free_rx_chain_contents()
357 		if (descr->skb) {  in spider_net_free_rx_chain_contents()
359 					 descr->hwdescr->buf_addr,  in spider_net_free_rx_chain_contents()
362 			dev_kfree_skb(descr->skb);  in spider_net_free_rx_chain_contents()
363 			descr->skb = NULL;  in spider_net_free_rx_chain_contents()
365 		descr = descr->next;  in spider_net_free_rx_chain_contents()
366 	} while (descr != card->rx_chain.head);  in spider_net_free_rx_chain_contents()
381 			    struct spider_net_descr *descr)  in spider_net_prepare_rx_descr()  argument
383 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_prepare_rx_descr()
396 	descr->skb = netdev_alloc_skb(card->netdev,  in spider_net_prepare_rx_descr()
398 	if (!descr->skb) {  in spider_net_prepare_rx_descr()
411 	offset = ((unsigned long)descr->skb->data) &  in spider_net_prepare_rx_descr()
414 		skb_reserve(descr->skb, SPIDER_NET_RXBUF_ALIGN - offset);  in spider_net_prepare_rx_descr()
416 	buf = dma_map_single(&card->pdev->dev, descr->skb->data,  in spider_net_prepare_rx_descr()
419 		dev_kfree_skb_any(descr->skb);  in spider_net_prepare_rx_descr()
420 		descr->skb = NULL;  in spider_net_prepare_rx_descr()
521 	struct spider_net_descr *descr = start;  in spider_net_alloc_rx_skbs()  local
525 		descr->prev->hwdescr->next_descr_addr = descr->bus_addr;  in spider_net_alloc_rx_skbs()
526 		descr = descr->next;  in spider_net_alloc_rx_skbs()
527 	} while (descr != start);  in spider_net_alloc_rx_skbs()
653 	struct spider_net_descr *descr;  in spider_net_prepare_tx_descr()  local
669 	descr = card->tx_chain.head;  in spider_net_prepare_tx_descr()
670 	if (descr->next == chain->tail->prev) {  in spider_net_prepare_tx_descr()
676 	hwdescr = descr->hwdescr;  in spider_net_prepare_tx_descr()
677 	chain->head = descr->next;  in spider_net_prepare_tx_descr()
679 	descr->skb = skb;  in spider_net_prepare_tx_descr()
701 	descr->prev->hwdescr->next_descr_addr = descr->bus_addr;  in spider_net_prepare_tx_descr()
710 	struct spider_net_descr *descr = card->tx_chain.tail;  in spider_net_set_low_watermark()  local
720 	while (descr != card->tx_chain.head) {  in spider_net_set_low_watermark()
721 		status = descr->hwdescr->dmac_cmd_status & SPIDER_NET_DESCR_NOT_IN_USE;  in spider_net_set_low_watermark()
724 		descr = descr->next;  in spider_net_set_low_watermark()
733 	descr = card->tx_chain.tail;  in spider_net_set_low_watermark()
736 		descr = descr->next;  in spider_net_set_low_watermark()
740 	descr->hwdescr->dmac_cmd_status |= SPIDER_NET_DESCR_TXDESFLG;  in spider_net_set_low_watermark()
741 	if (card->low_watermark && card->low_watermark != descr) {  in spider_net_set_low_watermark()
746 	card->low_watermark = descr;  in spider_net_set_low_watermark()
768 	struct spider_net_descr *descr;  in spider_net_release_tx_chain()  local
781 		descr = chain->tail;  in spider_net_release_tx_chain()
782 		hwdescr = descr->hwdescr;  in spider_net_release_tx_chain()
788 			dev->stats.tx_bytes += descr->skb->len;  in spider_net_release_tx_chain()
820 		chain->tail = descr->next;  in spider_net_release_tx_chain()
822 		skb = descr->skb;  in spider_net_release_tx_chain()
823 		descr->skb = NULL;  in spider_net_release_tx_chain()
851 	struct spider_net_descr *descr;  in spider_net_kick_tx_dma()  local
857 	descr = card->tx_chain.tail;  in spider_net_kick_tx_dma()
859 		if (spider_net_get_descr_status(descr->hwdescr) ==  in spider_net_kick_tx_dma()
862 					descr->bus_addr);  in spider_net_kick_tx_dma()
867 		if (descr == card->tx_chain.head)  in spider_net_kick_tx_dma()
869 		descr = descr->next;  in spider_net_kick_tx_dma()
950 spider_net_pass_skb_up(struct spider_net_descr *descr,  in spider_net_pass_skb_up()  argument
953 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_pass_skb_up()
954 	struct sk_buff *skb = descr->skb;  in spider_net_pass_skb_up()
993 	struct spider_net_descr *descr= start;  in show_rx_chain()  local
1015 		hwd = descr->hwdescr;  in show_rx_chain()
1016 		off = descr - chain->ring;  in show_rx_chain()
1019 		if (descr == chain->head)  in show_rx_chain()
1023 		if (curr_desc == descr->bus_addr)  in show_rx_chain()
1027 		if (next_desc == descr->bus_addr)  in show_rx_chain()
1045 		descr = descr->next;  in show_rx_chain()
1046 	} while (descr != start);  in show_rx_chain()
1053 	descr = start;  in show_rx_chain()
1056 		struct spider_net_hw_descr *hwd = descr->hwdescr;  in show_rx_chain()
1058 		cnt = descr - chain->ring;  in show_rx_chain()
1060 		         cnt, status, descr->skb);  in show_rx_chain()
1062 		         descr->bus_addr, hwd->buf_addr, hwd->buf_size);  in show_rx_chain()
1071 		descr = descr->next;  in show_rx_chain()
1072 	} while (descr != start);  in show_rx_chain()
1091 	struct spider_net_descr *descr;  in spider_net_resync_head_ptr()  local
1095 	descr = chain->head;  in spider_net_resync_head_ptr()
1096 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1103 	descr = chain->head;  in spider_net_resync_head_ptr()
1104 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1107 		descr = descr->next;  in spider_net_resync_head_ptr()
1108 		status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_head_ptr()
1110 	chain->head = descr;  in spider_net_resync_head_ptr()
1118 	struct spider_net_descr *descr;  in spider_net_resync_tail_ptr()  local
1122 	descr = chain->tail;  in spider_net_resync_tail_ptr()
1123 	status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_tail_ptr()
1128 		descr = descr->next;  in spider_net_resync_tail_ptr()
1129 		status = spider_net_get_descr_status(descr->hwdescr);  in spider_net_resync_tail_ptr()
1131 	chain->tail = descr;  in spider_net_resync_tail_ptr()
1154 	struct spider_net_descr *descr = chain->tail;  in spider_net_decode_one_descr()  local
1155 	struct spider_net_hw_descr *hwdescr = descr->hwdescr;  in spider_net_decode_one_descr()
1167 	chain->tail = descr->next;  in spider_net_decode_one_descr()
1214 		pr_err("which=%ld\n", descr - card->rx_chain.ring);  in spider_net_decode_one_descr()
1221 	spider_net_pass_skb_up(descr, card);  in spider_net_decode_one_descr()
1222 	descr->skb = NULL;  in spider_net_decode_one_descr()
1229 	dev_kfree_skb_irq(descr->skb);  in spider_net_decode_one_descr()
1230 	descr->skb = NULL;  in spider_net_decode_one_descr()