131 	priv->tx_head = 0;  in moxart_mac_setup_desc_ring()
282 	return CIRC_SPACE(priv->tx_head, priv->tx_tail, TX_DESC_NUM);  in moxart_tx_queue_space()
288 	unsigned int tx_head = priv->tx_head;  in moxart_tx_finished()  local
291 	while (tx_tail != tx_head) {  in moxart_tx_finished()
335 	unsigned int tx_head;  in moxart_mac_start_xmit()  local
341 	tx_head = priv->tx_head;  in moxart_mac_start_xmit()
342 	desc = priv->tx_desc_base + (TX_REG_DESC_SIZE * tx_head);  in moxart_mac_start_xmit()
356 	priv->tx_mapping[tx_head] = dma_map_single(&priv->pdev->dev, skb->data,  in moxart_mac_start_xmit()
358 	if (dma_mapping_error(&priv->pdev->dev, priv->tx_mapping[tx_head])) {  in moxart_mac_start_xmit()
363 	priv->tx_len[tx_head] = len;  in moxart_mac_start_xmit()
364 	priv->tx_skb[tx_head] = skb;  in moxart_mac_start_xmit()
366 	moxart_desc_write(priv->tx_mapping[tx_head],  in moxart_mac_start_xmit()
377 	dma_sync_single_for_device(&priv->pdev->dev, priv->tx_mapping[tx_head],  in moxart_mac_start_xmit()
381 	if (tx_head == TX_DESC_NUM_MASK)  in moxart_mac_start_xmit()
390 	priv->tx_head = TX_NEXT(tx_head);  in moxart_mac_start_xmit()