69 	struct ocelot_fdma_tx_ring *tx_ring = &fdma->tx_ring;  in ocelot_fdma_tx_ring_free()  local
71 	if (tx_ring->next_to_use >= tx_ring->next_to_clean)  in ocelot_fdma_tx_ring_free()
73 		       (tx_ring->next_to_use - tx_ring->next_to_clean) - 1;  in ocelot_fdma_tx_ring_free()
75 		return tx_ring->next_to_clean - tx_ring->next_to_use - 1;  in ocelot_fdma_tx_ring_free()
80 	struct ocelot_fdma_tx_ring *tx_ring = &fdma->tx_ring;  in ocelot_fdma_tx_ring_empty()  local
82 	return tx_ring->next_to_clean == tx_ring->next_to_use;  in ocelot_fdma_tx_ring_empty()
484 	struct ocelot_fdma_tx_ring *tx_ring;  in ocelot_fdma_tx_cleanup()  local
495 	tx_ring = &fdma->tx_ring;  in ocelot_fdma_tx_cleanup()
501 		ntc = tx_ring->next_to_clean;  in ocelot_fdma_tx_cleanup()
502 		dcb = &tx_ring->dcbs[ntc];  in ocelot_fdma_tx_cleanup()
506 		buf = &tx_ring->bufs[ntc];  in ocelot_fdma_tx_cleanup()
514 		tx_ring->next_to_clean = ocelot_fdma_idx_next(ntc,  in ocelot_fdma_tx_cleanup()
542 	new_null_llp_idx = ocelot_fdma_idx_prev(tx_ring->next_to_use,  in ocelot_fdma_tx_cleanup()
544 	dcb = &tx_ring->dcbs[new_null_llp_idx];  in ocelot_fdma_tx_cleanup()
547 	dma = ocelot_fdma_idx_dma(tx_ring->dcbs_dma, tx_ring->next_to_clean);  in ocelot_fdma_tx_cleanup()
610 	struct ocelot_fdma_tx_ring *tx_ring = &fdma->tx_ring;  in ocelot_fdma_send_skb()  local
616 	dcb = &tx_ring->dcbs[tx_ring->next_to_use];  in ocelot_fdma_send_skb()
617 	tx_buf = &tx_ring->bufs[tx_ring->next_to_use];  in ocelot_fdma_send_skb()
623 	next_idx = ocelot_fdma_idx_next(tx_ring->next_to_use,  in ocelot_fdma_send_skb()
629 		dma = ocelot_fdma_idx_dma(tx_ring->dcbs_dma,  in ocelot_fdma_send_skb()
630 					  tx_ring->next_to_use);  in ocelot_fdma_send_skb()
634 		dcb->llp = ocelot_fdma_idx_dma(tx_ring->dcbs_dma, next_idx);  in ocelot_fdma_send_skb()
637 	tx_ring->next_to_use = next_idx;  in ocelot_fdma_send_skb()
679 	spin_lock(&fdma->tx_ring.xmit_lock);  in ocelot_fdma_inject_frame()
693 	spin_unlock(&fdma->tx_ring.xmit_lock);  in ocelot_fdma_inject_frame()
724 	struct ocelot_fdma_tx_ring *tx_ring;  in ocelot_fdma_free_tx_ring()  local
729 	tx_ring = &fdma->tx_ring;  in ocelot_fdma_free_tx_ring()
730 	idx = tx_ring->next_to_clean;  in ocelot_fdma_free_tx_ring()
732 	while (idx != tx_ring->next_to_use) {  in ocelot_fdma_free_tx_ring()
733 		txb = &tx_ring->bufs[idx];  in ocelot_fdma_free_tx_ring()
767 	fdma->tx_ring.dcbs = dcbs;  in ocelot_fdma_rings_alloc()
768 	fdma->tx_ring.dcbs_dma = dcbs_dma;  in ocelot_fdma_rings_alloc()
769 	spin_lock_init(&fdma->tx_ring.xmit_lock);  in ocelot_fdma_rings_alloc()