Function i40e_start_timecounters

dpdk/drivers/net/i40e/i40e_ethdev.c:10316–10367

}

static void
i40e_start_timecounters(struct rte_eth_dev *dev)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct i40e_adapter *adapter = dev->data->dev_private;
	struct rte_eth_link link;
	uint32_t tsync_inc_l;
	uint32_t tsync_inc_h;

	/* Get current link speed. */
	i40e_dev_link_update(dev, 1);
	rte_eth_linkstatus_get(dev, &link);

	switch (link.link_speed) {
	case RTE_ETH_SPEED_NUM_40G:
	case RTE_ETH_SPEED_NUM_25G:
		tsync_inc_l = I40E_PTP_40GB_INCVAL & 0xFFFFFFFF;
		tsync_inc_h = I40E_PTP_40GB_INCVAL >> 32;
		break;
	case RTE_ETH_SPEED_NUM_10G:
		tsync_inc_l = I40E_PTP_10GB_INCVAL & 0xFFFFFFFF;
		tsync_inc_h = I40E_PTP_10GB_INCVAL >> 32;
		break;
	case RTE_ETH_SPEED_NUM_1G:
		tsync_inc_l = I40E_PTP_1GB_INCVAL & 0xFFFFFFFF;
		tsync_inc_h = I40E_PTP_1GB_INCVAL >> 32;
		break;
	default:
		tsync_inc_l = 0x0;
		tsync_inc_h = 0x0;
	}

	/* Set the timesync increment value. */
	I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_L, tsync_inc_l);
	I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_H, tsync_inc_h);

	memset(&adapter->systime_tc, 0, sizeof(struct rte_timecounter));
	memset(&adapter->rx_tstamp_tc, 0, sizeof(struct rte_timecounter));
	memset(&adapter->tx_tstamp_tc, 0, sizeof(struct rte_timecounter));

	adapter->systime_tc.cc_mask = I40E_CYCLECOUNTER_MASK;
	adapter->systime_tc.cc_shift = 0;
	adapter->systime_tc.nsec_mask = 0;

	adapter->rx_tstamp_tc.cc_mask = I40E_CYCLECOUNTER_MASK;
	adapter->rx_tstamp_tc.cc_shift = 0;
	adapter->rx_tstamp_tc.nsec_mask = 0;

	adapter->tx_tstamp_tc.cc_mask = I40E_CYCLECOUNTER_MASK;
	adapter->tx_tstamp_tc.cc_shift = 0;
	adapter->tx_tstamp_tc.nsec_mask = 0;
}

static int
i40e_timesync_adjust_time(struct rte_eth_dev *dev, int64_t delta)