241 static void cpmac_dump_desc(struct net_device *dev, struct cpmac_desc *desc)  in cpmac_dump_desc()  argument
245 	printk("%s: desc[%p]:", dev->name, desc);  in cpmac_dump_desc()
246 	for (i = 0; i < sizeof(*desc) / 4; i++)  in cpmac_dump_desc()
247 		printk(" %08x", ((u32 *)desc)[i]);  in cpmac_dump_desc()
369 				    struct cpmac_desc *desc)  in cpmac_rx_one()  argument
374 		cpmac_dump_desc(priv->dev, desc);  in cpmac_rx_one()
375 	cpmac_write(priv->regs, CPMAC_RX_ACK(0), (u32)desc->mapping);  in cpmac_rx_one()
376 	if (unlikely(!desc->datalen)) {  in cpmac_rx_one()
385 		skb_put(desc->skb, desc->datalen);  in cpmac_rx_one()
386 		desc->skb->protocol = eth_type_trans(desc->skb, priv->dev);  in cpmac_rx_one()
387 		skb_checksum_none_assert(desc->skb);  in cpmac_rx_one()
389 		priv->dev->stats.rx_bytes += desc->datalen;  in cpmac_rx_one()
390 		result = desc->skb;  in cpmac_rx_one()
391 		dma_unmap_single(&priv->dev->dev, desc->data_mapping,  in cpmac_rx_one()
393 		desc->skb = skb;  in cpmac_rx_one()
394 		desc->data_mapping = dma_map_single(&priv->dev->dev, skb->data,  in cpmac_rx_one()
397 		desc->hw_data = (u32)desc->data_mapping;  in cpmac_rx_one()
410 	desc->buflen = CPMAC_SKB_SIZE;  in cpmac_rx_one()
411 	desc->dataflags = CPMAC_OWN;  in cpmac_rx_one()
419 	struct cpmac_desc *desc, *restart;  in cpmac_poll()  local
433 	desc = priv->rx_head;  in cpmac_poll()
435 	while (((desc->dataflags & CPMAC_OWN) == 0) && (received < budget)) {  in cpmac_poll()
438 		if ((desc->dataflags & CPMAC_EOQ) != 0) {  in cpmac_poll()
448 						   restart, desc);  in cpmac_poll()
452 			restart = desc->next;  in cpmac_poll()
455 		skb = cpmac_rx_one(priv, desc);  in cpmac_poll()
460 		desc = desc->next;  in cpmac_poll()
463 	if (desc != priv->rx_head) {  in cpmac_poll()
467 		desc->prev->hw_next = (u32)0;  in cpmac_poll()
507 	priv->rx_head = desc;  in cpmac_poll()
553 	struct cpmac_desc *desc;  in cpmac_start_xmit()  local
566 	desc = &priv->desc_ring[queue];  in cpmac_start_xmit()
567 	if (unlikely(desc->dataflags & CPMAC_OWN)) {  in cpmac_start_xmit()
576 	desc->dataflags = CPMAC_SOP | CPMAC_EOP | CPMAC_OWN;  in cpmac_start_xmit()
577 	desc->skb = skb;  in cpmac_start_xmit()
578 	desc->data_mapping = dma_map_single(&dev->dev, skb->data, len,  in cpmac_start_xmit()
580 	desc->hw_data = (u32)desc->data_mapping;  in cpmac_start_xmit()
581 	desc->datalen = len;  in cpmac_start_xmit()
582 	desc->buflen = len;  in cpmac_start_xmit()
586 		cpmac_dump_desc(dev, desc);  in cpmac_start_xmit()
589 	cpmac_write(priv->regs, CPMAC_TX_PTR(queue), (u32)desc->mapping);  in cpmac_start_xmit()
596 	struct cpmac_desc *desc;  in cpmac_end_xmit()  local
599 	desc = &priv->desc_ring[queue];  in cpmac_end_xmit()
600 	cpmac_write(priv->regs, CPMAC_TX_ACK(queue), (u32)desc->mapping);  in cpmac_end_xmit()
601 	if (likely(desc->skb)) {  in cpmac_end_xmit()
604 		dev->stats.tx_bytes += desc->skb->len;  in cpmac_end_xmit()
606 		dma_unmap_single(&dev->dev, desc->data_mapping, desc->skb->len,  in cpmac_end_xmit()
611 				   desc->skb, desc->skb->len);  in cpmac_end_xmit()
613 		dev_kfree_skb_irq(desc->skb);  in cpmac_end_xmit()
614 		desc->skb = NULL;  in cpmac_end_xmit()
692 	struct cpmac_desc *desc;  in cpmac_clear_rx()  local
697 	desc = priv->rx_head;  in cpmac_clear_rx()
699 		if ((desc->dataflags & CPMAC_OWN) == 0) {  in cpmac_clear_rx()
703 				cpmac_dump_desc(dev, desc);  in cpmac_clear_rx()
704 			desc->dataflags = CPMAC_OWN;  in cpmac_clear_rx()
707 		desc->hw_next = desc->next->mapping;  in cpmac_clear_rx()
708 		desc = desc->next;  in cpmac_clear_rx()
953 	struct cpmac_desc *desc;  in cpmac_open()  local
985 		priv->desc_ring[i].mapping = priv->dma_ring + sizeof(*desc) * i;  in cpmac_open()
988 	for (i = 0, desc = priv->rx_head; i < priv->ring_size; i++, desc++) {  in cpmac_open()
994 		desc->skb = skb;  in cpmac_open()
995 		desc->data_mapping = dma_map_single(&dev->dev, skb->data,  in cpmac_open()
998 		desc->hw_data = (u32)desc->data_mapping;  in cpmac_open()
999 		desc->buflen = CPMAC_SKB_SIZE;  in cpmac_open()
1000 		desc->dataflags = CPMAC_OWN;  in cpmac_open()
1001 		desc->next = &priv->rx_head[(i + 1) % priv->ring_size];  in cpmac_open()
1002 		desc->next->prev = desc;  in cpmac_open()
1003 		desc->hw_next = (u32)desc->next->mapping;  in cpmac_open()