C++ (Cpp) DOORBELL示例

示例#1

文件： pci.c 项目： valorekhov/rpi-bluetooth-next

static void __mlxsw_pci_queue_doorbell_arm_set(struct mlxsw_pci *mlxsw_pci,
					       struct mlxsw_pci_queue *q,
					       u16 val)
{
	mlxsw_pci_write32(mlxsw_pci,
			  DOORBELL(mlxsw_pci->doorbell_offset,
				   mlxsw_pci_doorbell_arm_type_offset[q->type],
				   q->num), val);
}

示例#2

文件： bnx2x_rxtx.c 项目： Di0gen/test_jenkins_project

static uint16_t
bnx2x_xmit_pkts(void *p_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
{
	struct bnx2x_tx_queue *txq;
	struct bnx2x_softc *sc;
	struct bnx2x_fastpath *fp;
	uint16_t nb_tx_pkts;
	uint16_t nb_pkt_sent = 0;
	uint32_t ret;

	txq = p_txq;
	sc = txq->sc;
	fp = &sc->fp[txq->queue_id];

	if ((unlikely((txq->nb_tx_desc - txq->nb_tx_avail) >
				txq->tx_free_thresh)))
		bnx2x_txeof(sc, fp);

	nb_tx_pkts = RTE_MIN(nb_pkts, txq->nb_tx_avail / BDS_PER_TX_PKT);
	if (unlikely(nb_tx_pkts == 0))
		return 0;

	while (nb_tx_pkts--) {
		struct rte_mbuf *m = *tx_pkts++;
		assert(m != NULL);
		ret = bnx2x_tx_encap(txq, m);
		fp->tx_db.data.prod += ret;
		nb_pkt_sent++;
	}

	bnx2x_update_fp_sb_idx(fp);
	mb();
	DOORBELL(sc, txq->queue_id, fp->tx_db.raw);
	mb();

	if ((txq->nb_tx_desc - txq->nb_tx_avail) >
				txq->tx_free_thresh)
		bnx2x_txeof(sc, fp);

	return nb_pkt_sent;
}