239 static void cpmac_dump_desc(struct net_device *dev, struct cpmac_desc *desc)  in cpmac_dump_desc()  argument
243 	printk("%s: desc[%p]:", dev->name, desc);  in cpmac_dump_desc()
244 	for (i = 0; i < sizeof(*desc) / 4; i++)  in cpmac_dump_desc()
245 		printk(" %08x", ((u32 *)desc)[i]);  in cpmac_dump_desc()
367 				    struct cpmac_desc *desc)  in cpmac_rx_one()  argument
372 		cpmac_dump_desc(priv->dev, desc);  in cpmac_rx_one()
373 	cpmac_write(priv->regs, CPMAC_RX_ACK(0), (u32)desc->mapping);  in cpmac_rx_one()
374 	if (unlikely(!desc->datalen)) {  in cpmac_rx_one()
383 		skb_put(desc->skb, desc->datalen);  in cpmac_rx_one()
384 		desc->skb->protocol = eth_type_trans(desc->skb, priv->dev);  in cpmac_rx_one()
385 		skb_checksum_none_assert(desc->skb);  in cpmac_rx_one()
387 		priv->dev->stats.rx_bytes += desc->datalen;  in cpmac_rx_one()
388 		result = desc->skb;  in cpmac_rx_one()
389 		dma_unmap_single(&priv->dev->dev, desc->data_mapping,  in cpmac_rx_one()
391 		desc->skb = skb;  in cpmac_rx_one()
392 		desc->data_mapping = dma_map_single(&priv->dev->dev, skb->data,  in cpmac_rx_one()
395 		desc->hw_data = (u32)desc->data_mapping;  in cpmac_rx_one()
408 	desc->buflen = CPMAC_SKB_SIZE;  in cpmac_rx_one()
409 	desc->dataflags = CPMAC_OWN;  in cpmac_rx_one()
417 	struct cpmac_desc *desc, *restart;  in cpmac_poll()  local
431 	desc = priv->rx_head;  in cpmac_poll()
433 	while (((desc->dataflags & CPMAC_OWN) == 0) && (received < budget)) {  in cpmac_poll()
436 		if ((desc->dataflags & CPMAC_EOQ) != 0) {  in cpmac_poll()
446 						   restart, desc);  in cpmac_poll()
450 			restart = desc->next;  in cpmac_poll()
453 		skb = cpmac_rx_one(priv, desc);  in cpmac_poll()
458 		desc = desc->next;  in cpmac_poll()
461 	if (desc != priv->rx_head) {  in cpmac_poll()
465 		desc->prev->hw_next = (u32)0;  in cpmac_poll()
505 	priv->rx_head = desc;  in cpmac_poll()
551 	struct cpmac_desc *desc;  in cpmac_start_xmit()  local
564 	desc = &priv->desc_ring[queue];  in cpmac_start_xmit()
565 	if (unlikely(desc->dataflags & CPMAC_OWN)) {  in cpmac_start_xmit()
574 	desc->dataflags = CPMAC_SOP | CPMAC_EOP | CPMAC_OWN;  in cpmac_start_xmit()
575 	desc->skb = skb;  in cpmac_start_xmit()
576 	desc->data_mapping = dma_map_single(&dev->dev, skb->data, len,  in cpmac_start_xmit()
578 	desc->hw_data = (u32)desc->data_mapping;  in cpmac_start_xmit()
579 	desc->datalen = len;  in cpmac_start_xmit()
580 	desc->buflen = len;  in cpmac_start_xmit()
584 		cpmac_dump_desc(dev, desc);  in cpmac_start_xmit()
587 	cpmac_write(priv->regs, CPMAC_TX_PTR(queue), (u32)desc->mapping);  in cpmac_start_xmit()
594 	struct cpmac_desc *desc;  in cpmac_end_xmit()  local
597 	desc = &priv->desc_ring[queue];  in cpmac_end_xmit()
598 	cpmac_write(priv->regs, CPMAC_TX_ACK(queue), (u32)desc->mapping);  in cpmac_end_xmit()
599 	if (likely(desc->skb)) {  in cpmac_end_xmit()
602 		dev->stats.tx_bytes += desc->skb->len;  in cpmac_end_xmit()
604 		dma_unmap_single(&dev->dev, desc->data_mapping, desc->skb->len,  in cpmac_end_xmit()
609 				   desc->skb, desc->skb->len);  in cpmac_end_xmit()
611 		dev_kfree_skb_irq(desc->skb);  in cpmac_end_xmit()
612 		desc->skb = NULL;  in cpmac_end_xmit()
690 	struct cpmac_desc *desc;  in cpmac_clear_rx()  local
695 	desc = priv->rx_head;  in cpmac_clear_rx()
697 		if ((desc->dataflags & CPMAC_OWN) == 0) {  in cpmac_clear_rx()
701 				cpmac_dump_desc(dev, desc);  in cpmac_clear_rx()
702 			desc->dataflags = CPMAC_OWN;  in cpmac_clear_rx()
705 		desc->hw_next = desc->next->mapping;  in cpmac_clear_rx()
706 		desc = desc->next;  in cpmac_clear_rx()
952 	struct cpmac_desc *desc;  in cpmac_open()  local
984 		priv->desc_ring[i].mapping = priv->dma_ring + sizeof(*desc) * i;  in cpmac_open()
987 	for (i = 0, desc = priv->rx_head; i < priv->ring_size; i++, desc++) {  in cpmac_open()
993 		desc->skb = skb;  in cpmac_open()
994 		desc->data_mapping = dma_map_single(&dev->dev, skb->data,  in cpmac_open()
997 		desc->hw_data = (u32)desc->data_mapping;  in cpmac_open()
998 		desc->buflen = CPMAC_SKB_SIZE;  in cpmac_open()
999 		desc->dataflags = CPMAC_OWN;  in cpmac_open()
1000 		desc->next = &priv->rx_head[(i + 1) % priv->ring_size];  in cpmac_open()
1001 		desc->next->prev = desc;  in cpmac_open()
1002 		desc->hw_next = (u32)desc->next->mapping;  in cpmac_open()