ethernet/mscc/ocelot_fdma.c

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