+ 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)
+{
+ struct i40e_adapter *adapter =
+ (struct i40e_adapter *)dev->data->dev_private;
+
+ adapter->systime_tc.nsec += delta;
+ adapter->rx_tstamp_tc.nsec += delta;
+ adapter->tx_tstamp_tc.nsec += delta;
+
+ return 0;
+}
+
+static int
+i40e_timesync_write_time(struct rte_eth_dev *dev, const struct timespec *ts)
+{
+ uint64_t ns;
+ struct i40e_adapter *adapter =
+ (struct i40e_adapter *)dev->data->dev_private;
+
+ ns = rte_timespec_to_ns(ts);
+
+ /* Set the timecounters to a new value. */
+ adapter->systime_tc.nsec = ns;
+ adapter->rx_tstamp_tc.nsec = ns;
+ adapter->tx_tstamp_tc.nsec = ns;
+
+ return 0;
+}
+
+static int
+i40e_timesync_read_time(struct rte_eth_dev *dev, struct timespec *ts)
+{
+ uint64_t ns, systime_cycles;
+ struct i40e_adapter *adapter =
+ (struct i40e_adapter *)dev->data->dev_private;
+
+ systime_cycles = i40e_read_systime_cyclecounter(dev);
+ ns = rte_timecounter_update(&adapter->systime_tc, systime_cycles);
+ *ts = rte_ns_to_timespec(ns);
+
+ return 0;
+}
+
+static int
+i40e_timesync_enable(struct rte_eth_dev *dev)
+{
+ struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint32_t tsync_ctl_l;
+ uint32_t tsync_ctl_h;
+
+ /* Stop the timesync system time. */
+ I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_L, 0x0);
+ I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_H, 0x0);
+ /* Reset the timesync system time value. */
+ I40E_WRITE_REG(hw, I40E_PRTTSYN_TIME_L, 0x0);
+ I40E_WRITE_REG(hw, I40E_PRTTSYN_TIME_H, 0x0);
+
+ i40e_start_timecounters(dev);
+
+ /* Clear timesync registers. */
+ I40E_READ_REG(hw, I40E_PRTTSYN_STAT_0);
+ I40E_READ_REG(hw, I40E_PRTTSYN_TXTIME_H);
+ I40E_READ_REG(hw, I40E_PRTTSYN_RXTIME_H(0));
+ I40E_READ_REG(hw, I40E_PRTTSYN_RXTIME_H(1));
+ I40E_READ_REG(hw, I40E_PRTTSYN_RXTIME_H(2));
+ I40E_READ_REG(hw, I40E_PRTTSYN_RXTIME_H(3));
+