+static uint64_t
+ixgbe_read_systime_cyclecounter(struct rte_eth_dev *dev)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint64_t systime_cycles;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_X550:
+ /* SYSTIMEL stores ns and SYSTIMEH stores seconds. */
+ systime_cycles = (uint64_t)IXGBE_READ_REG(hw, IXGBE_SYSTIML);
+ systime_cycles += (uint64_t)IXGBE_READ_REG(hw, IXGBE_SYSTIMH)
+ * NSEC_PER_SEC;
+ break;
+ default:
+ systime_cycles = (uint64_t)IXGBE_READ_REG(hw, IXGBE_SYSTIML);
+ systime_cycles |= (uint64_t)IXGBE_READ_REG(hw, IXGBE_SYSTIMH)
+ << 32;
+ }
+
+ return systime_cycles;
+}
+
+static uint64_t
+ixgbe_read_rx_tstamp_cyclecounter(struct rte_eth_dev *dev)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint64_t rx_tstamp_cycles;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_X550:
+ /* RXSTMPL stores ns and RXSTMPH stores seconds. */
+ rx_tstamp_cycles = (uint64_t)IXGBE_READ_REG(hw, IXGBE_RXSTMPL);
+ rx_tstamp_cycles += (uint64_t)IXGBE_READ_REG(hw, IXGBE_RXSTMPH)
+ * NSEC_PER_SEC;
+ break;
+ default:
+ /* RXSTMPL stores ns and RXSTMPH stores seconds. */
+ rx_tstamp_cycles = (uint64_t)IXGBE_READ_REG(hw, IXGBE_RXSTMPL);
+ rx_tstamp_cycles |= (uint64_t)IXGBE_READ_REG(hw, IXGBE_RXSTMPH)
+ << 32;
+ }
+
+ return rx_tstamp_cycles;
+}
+
+static uint64_t
+ixgbe_read_tx_tstamp_cyclecounter(struct rte_eth_dev *dev)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint64_t tx_tstamp_cycles;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_X550:
+ /* TXSTMPL stores ns and TXSTMPH stores seconds. */
+ tx_tstamp_cycles = (uint64_t)IXGBE_READ_REG(hw, IXGBE_TXSTMPL);
+ tx_tstamp_cycles += (uint64_t)IXGBE_READ_REG(hw, IXGBE_TXSTMPH)
+ * NSEC_PER_SEC;
+ break;
+ default:
+ /* TXSTMPL stores ns and TXSTMPH stores seconds. */
+ tx_tstamp_cycles = (uint64_t)IXGBE_READ_REG(hw, IXGBE_TXSTMPL);
+ tx_tstamp_cycles |= (uint64_t)IXGBE_READ_REG(hw, IXGBE_TXSTMPH)
+ << 32;
+ }
+
+ return tx_tstamp_cycles;
+}
+
+static void
+ixgbe_start_timecounters(struct rte_eth_dev *dev)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ struct ixgbe_adapter *adapter =
+ (struct ixgbe_adapter *)dev->data->dev_private;
+ struct rte_eth_link link;
+ uint32_t incval = 0;
+ uint32_t shift = 0;
+
+ /* Get current link speed. */
+ memset(&link, 0, sizeof(link));
+ ixgbe_dev_link_update(dev, 1);
+ rte_ixgbe_dev_atomic_read_link_status(dev, &link);
+
+ switch (link.link_speed) {
+ case ETH_LINK_SPEED_100:
+ incval = IXGBE_INCVAL_100;
+ shift = IXGBE_INCVAL_SHIFT_100;
+ break;
+ case ETH_LINK_SPEED_1000:
+ incval = IXGBE_INCVAL_1GB;
+ shift = IXGBE_INCVAL_SHIFT_1GB;
+ break;
+ case ETH_LINK_SPEED_10000:
+ default:
+ incval = IXGBE_INCVAL_10GB;
+ shift = IXGBE_INCVAL_SHIFT_10GB;
+ break;
+ }
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_X550:
+ /* Independent of link speed. */
+ incval = 1;
+ /* Cycles read will be interpreted as ns. */
+ shift = 0;
+ /* Fall-through */
+ case ixgbe_mac_X540:
+ IXGBE_WRITE_REG(hw, IXGBE_TIMINCA, incval);
+ break;
+ case ixgbe_mac_82599EB:
+ incval >>= IXGBE_INCVAL_SHIFT_82599;
+ shift -= IXGBE_INCVAL_SHIFT_82599;
+ IXGBE_WRITE_REG(hw, IXGBE_TIMINCA,
+ (1 << IXGBE_INCPER_SHIFT_82599) | incval);
+ break;
+ default:
+ /* Not supported. */
+ return;
+ }
+
+ 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 = IXGBE_CYCLECOUNTER_MASK;
+ adapter->systime_tc.cc_shift = shift;
+ adapter->systime_tc.nsec_mask = (1ULL << shift) - 1;
+
+ adapter->rx_tstamp_tc.cc_mask = IXGBE_CYCLECOUNTER_MASK;
+ adapter->rx_tstamp_tc.cc_shift = shift;
+ adapter->rx_tstamp_tc.nsec_mask = (1ULL << shift) - 1;
+
+ adapter->tx_tstamp_tc.cc_mask = IXGBE_CYCLECOUNTER_MASK;
+ adapter->tx_tstamp_tc.cc_shift = shift;
+ adapter->tx_tstamp_tc.nsec_mask = (1ULL << shift) - 1;
+}
+
+static int
+ixgbe_timesync_adjust_time(struct rte_eth_dev *dev, int64_t delta)
+{
+ struct ixgbe_adapter *adapter =
+ (struct ixgbe_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
+ixgbe_timesync_write_time(struct rte_eth_dev *dev, const struct timespec *ts)
+{
+ uint64_t ns;
+ struct ixgbe_adapter *adapter =
+ (struct ixgbe_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
+ixgbe_timesync_read_time(struct rte_eth_dev *dev, struct timespec *ts)
+{
+ uint64_t ns, systime_cycles;
+ struct ixgbe_adapter *adapter =
+ (struct ixgbe_adapter *)dev->data->dev_private;
+
+ systime_cycles = ixgbe_read_systime_cyclecounter(dev);
+ ns = rte_timecounter_update(&adapter->systime_tc, systime_cycles);
+ *ts = rte_ns_to_timespec(ns);
+
+ return 0;
+}
+