+static int
+ixgbe_timesync_enable(struct rte_eth_dev *dev)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint32_t tsync_ctl;
+ uint32_t tsauxc;
+
+ /* Enable system time for platforms where it isn't on by default. */
+ tsauxc = IXGBE_READ_REG(hw, IXGBE_TSAUXC);
+ tsauxc &= ~IXGBE_TSAUXC_DISABLE_SYSTIME;
+ IXGBE_WRITE_REG(hw, IXGBE_TSAUXC, tsauxc);
+
+ /* Start incrementing the register used to timestamp PTP packets. */
+ IXGBE_WRITE_REG(hw, IXGBE_TIMINCA, IXGBE_TIMINCA_INIT);
+
+ /* Enable L2 filtering of IEEE1588/802.1AS Ethernet frame types. */
+ IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_1588),
+ (ETHER_TYPE_1588 |
+ IXGBE_ETQF_FILTER_EN |
+ IXGBE_ETQF_1588));
+
+ /* Enable timestamping of received PTP packets. */
+ tsync_ctl = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL);
+ tsync_ctl |= IXGBE_TSYNCRXCTL_ENABLED;
+ IXGBE_WRITE_REG(hw, IXGBE_TSYNCRXCTL, tsync_ctl);
+
+ /* Enable timestamping of transmitted PTP packets. */
+ tsync_ctl = IXGBE_READ_REG(hw, IXGBE_TSYNCTXCTL);
+ tsync_ctl |= IXGBE_TSYNCTXCTL_ENABLED;
+ IXGBE_WRITE_REG(hw, IXGBE_TSYNCTXCTL, tsync_ctl);
+
+ return 0;
+}
+
+static int
+ixgbe_timesync_disable(struct rte_eth_dev *dev)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint32_t tsync_ctl;
+
+ /* Disable timestamping of transmitted PTP packets. */
+ tsync_ctl = IXGBE_READ_REG(hw, IXGBE_TSYNCTXCTL);
+ tsync_ctl &= ~IXGBE_TSYNCTXCTL_ENABLED;
+ IXGBE_WRITE_REG(hw, IXGBE_TSYNCTXCTL, tsync_ctl);
+
+ /* Disable timestamping of received PTP packets. */
+ tsync_ctl = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL);
+ tsync_ctl &= ~IXGBE_TSYNCRXCTL_ENABLED;
+ IXGBE_WRITE_REG(hw, IXGBE_TSYNCRXCTL, tsync_ctl);
+
+ /* Disable L2 filtering of IEEE1588/802.1AS Ethernet frame types. */
+ IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_1588), 0);
+
+ /* Stop incrementating the System Time registers. */
+ IXGBE_WRITE_REG(hw, IXGBE_TIMINCA, 0);
+
+ return 0;
+}
+
+static int
+ixgbe_timesync_read_rx_timestamp(struct rte_eth_dev *dev,
+ struct timespec *timestamp,
+ uint32_t flags __rte_unused)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint32_t tsync_rxctl;
+ uint32_t rx_stmpl;
+ uint32_t rx_stmph;
+
+ tsync_rxctl = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL);
+ if ((tsync_rxctl & IXGBE_TSYNCRXCTL_VALID) == 0)
+ return -EINVAL;
+
+ rx_stmpl = IXGBE_READ_REG(hw, IXGBE_RXSTMPL);
+ rx_stmph = IXGBE_READ_REG(hw, IXGBE_RXSTMPH);
+
+ timestamp->tv_sec = (uint64_t)(((uint64_t)rx_stmph << 32) | rx_stmpl);
+ timestamp->tv_nsec = 0;
+
+ return 0;
+}
+
+static int
+ixgbe_timesync_read_tx_timestamp(struct rte_eth_dev *dev,
+ struct timespec *timestamp)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ uint32_t tsync_txctl;
+ uint32_t tx_stmpl;
+ uint32_t tx_stmph;
+
+ tsync_txctl = IXGBE_READ_REG(hw, IXGBE_TSYNCTXCTL);
+ if ((tsync_txctl & IXGBE_TSYNCTXCTL_VALID) == 0)
+ return -EINVAL;
+
+ tx_stmpl = IXGBE_READ_REG(hw, IXGBE_TXSTMPL);
+ tx_stmph = IXGBE_READ_REG(hw, IXGBE_TXSTMPH);
+
+ timestamp->tv_sec = (uint64_t)(((uint64_t)tx_stmph << 32) | tx_stmpl);
+ timestamp->tv_nsec = 0;
+
+ return 0;
+}
+