net/hns3: support Tx push quick doorbell for performance

[dpdk.git] / drivers / net / hns3 / hns3_rxtx.h

diff --git a/drivers/net/hns3/hns3_rxtx.h b/drivers/net/hns3/hns3_rxtx.h
index ba24e00..56c1b80 100644 (file)
--- a/drivers/net/hns3/hns3_rxtx.h
+++ b/drivers/net/hns3/hns3_rxtx.h
@@ -419,6 +419,7 @@ struct hns3_tx_dfx_stats {
 };
 
 struct hns3_tx_queue {
+       /* The io_tail_reg is write-only if working in tx push mode */
        volatile void *io_tail_reg;
        struct hns3_desc *tx_ring;
        struct hns3_entry *sw_ring;
@@ -659,6 +660,23 @@ hns3_rx_calc_ptype(struct hns3_rx_queue *rxq, const uint32_t l234_info,
                return ptype_tbl->l3table[l3id] | ptype_tbl->l4table[l4id];
 }
 
+/*
+ * If enable using Tx push feature and also device support it, then use quick
+ * doorbell (bar45) to inform the hardware.
+ *
+ * The other cases (such as: device don't support or user don't enable using)
+ * then use normal doorbell (bar23) to inform the hardware.
+ */
+static inline void
+hns3_write_txq_tail_reg(struct hns3_tx_queue *txq, uint32_t value)
+{
+       rte_io_wmb();
+       if (txq->tx_push_enable)
+               rte_write64_relaxed(rte_cpu_to_le_32(value), txq->io_tail_reg);
+       else
+               rte_write32_relaxed(rte_cpu_to_le_32(value), txq->io_tail_reg);
+}
+
 void hns3_dev_rx_queue_release(void *queue);
 void hns3_dev_tx_queue_release(void *queue);
 void hns3_free_all_queues(struct rte_eth_dev *dev);
@@ -741,5 +759,6 @@ int hns3_tx_done_cleanup(void *txq, uint32_t free_cnt);
 void hns3_enable_rxd_adv_layout(struct hns3_hw *hw);
 int hns3_dev_rx_descriptor_status(void *rx_queue, uint16_t offset);
 int hns3_dev_tx_descriptor_status(void *tx_queue, uint16_t offset);
+void hns3_tx_push_init(struct rte_eth_dev *dev);
 
 #endif /* _HNS3_RXTX_H_ */