[PATCH v11 09/13] net/sxe: support ptp

[Jie Liu <liujie5@linkdatatechnology.com>]

Add ptp module.

Signed-off-by: Jie Liu <liujie5@linkdatatechnology.com>
---
 drivers/net/sxe/pf/sxe_ptp.c | 209 +++++++++++++++++++++++++++++++++++
 drivers/net/sxe/pf/sxe_ptp.h |  26 +++++
 2 files changed, 235 insertions(+)
 create mode 100644 drivers/net/sxe/pf/sxe_ptp.c
 create mode 100644 drivers/net/sxe/pf/sxe_ptp.h

diff --git a/drivers/net/sxe/pf/sxe_ptp.c b/drivers/net/sxe/pf/sxe_ptp.c
new file mode 100644
index 0000000000..4116dbb37e
--- /dev/null
+++ b/drivers/net/sxe/pf/sxe_ptp.c
@@ -0,0 +1,209 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C), 2022, Linkdata Technology Co., Ltd.
+ */
+
+#include "sxe.h"
+#include "sxe_logs.h"
+#include "sxe_hw.h"
+#include "sxe_ptp.h"
+
+#define SXE_CYCLECOUNTER_MASK   0xffffffffffffffffULL
+
+static void sxe_timecounters_start(struct rte_eth_dev *dev)
+{
+	struct sxe_adapter *adapter = dev->data->dev_private;
+
+	u32 shift = 0;
+
+	memset(&adapter->ptp_ctxt.systime_tc, 0, sizeof(struct rte_timecounter));
+	memset(&adapter->ptp_ctxt.rx_tstamp_tc, 0, sizeof(struct rte_timecounter));
+	memset(&adapter->ptp_ctxt.tx_tstamp_tc, 0, sizeof(struct rte_timecounter));
+
+	adapter->ptp_ctxt.systime_tc.cc_mask = SXE_CYCLECOUNTER_MASK;
+	adapter->ptp_ctxt.systime_tc.cc_shift = shift;
+	adapter->ptp_ctxt.systime_tc.nsec_mask = (1ULL << shift) - 1;
+
+	adapter->ptp_ctxt.rx_tstamp_tc.cc_mask = SXE_CYCLECOUNTER_MASK;
+	adapter->ptp_ctxt.rx_tstamp_tc.cc_shift = shift;
+	adapter->ptp_ctxt.rx_tstamp_tc.nsec_mask = (1ULL << shift) - 1;
+
+	adapter->ptp_ctxt.tx_tstamp_tc.cc_mask = SXE_CYCLECOUNTER_MASK;
+	adapter->ptp_ctxt.tx_tstamp_tc.cc_shift = shift;
+	adapter->ptp_ctxt.tx_tstamp_tc.nsec_mask = (1ULL << shift) - 1;
+
+	adapter->ptp_ctxt.tx_hwtstamp_nsec = 0;
+	adapter->ptp_ctxt.tx_hwtstamp_sec = 0;
+}
+
+s32 sxe_timesync_enable(struct rte_eth_dev *dev)
+{
+	struct sxe_adapter *adapter = dev->data->dev_private;
+	struct sxe_hw *hw = &adapter->hw;
+	u32 tses = SXE_TSES_TXES_V2_ALL | SXE_TSES_RXES_V2_ALL;
+
+	struct timespec ts;
+
+	memset(&ts, 0, sizeof(struct timespec));
+
+	clock_gettime(CLOCK_REALTIME, &ts);
+
+	sxe_hw_ptp_init(hw);
+
+
+	sxe_hw_ptp_timestamp_mode_set(hw, true, 0, tses);
+
+	sxe_hw_ptp_timestamp_enable(hw);
+
+	sxe_hw_ptp_rx_timestamp_clear(hw);
+
+	sxe_hw_ptp_systime_init(hw);
+
+	sxe_timecounters_start(dev);
+
+
+	sxe_timesync_write_time(dev, &ts);
+
+	return 0;
+}
+
+s32 sxe_timesync_disable(struct rte_eth_dev *dev)
+{
+	struct sxe_adapter *adapter = dev->data->dev_private;
+	struct sxe_hw *hw = &adapter->hw;
+
+	sxe_hw_ptp_timestamp_disable(hw);
+
+	sxe_hw_ptp_timestamp_mode_set(hw, false, 0, 0);
+
+	sxe_hw_ptp_time_inc_stop(hw);
+
+	return 0;
+}
+
+s32 sxe_timesync_read_rx_timestamp(struct rte_eth_dev *dev,
+				 struct timespec *timestamp,
+				 u32 flags __rte_unused)
+{
+	struct sxe_adapter *adapter = dev->data->dev_private;
+	struct sxe_hw *hw = &adapter->hw;
+	u64 ns;
+	s32 ret = 0;
+	bool is_valid;
+	u64 rx_tstamp_cycles;
+
+	is_valid = sxe_hw_ptp_is_rx_timestamp_valid(hw);
+	if (!is_valid) {
+		PMD_LOG_ERR(DRV, "no valid ptp timestamp in rx register");
+		ret = -EINVAL;
+		goto l_end;
+	}
+
+	rx_tstamp_cycles = sxe_hw_ptp_rx_timestamp_get(hw);
+	ns = rte_timecounter_update(&adapter->ptp_ctxt.rx_tstamp_tc, rx_tstamp_cycles);
+	PMD_LOG_DEBUG(DRV, "got rx_tstamp_cycles = %" SXE_PRIU64 "ns=%" SXE_PRIU64,
+			rx_tstamp_cycles, ns);
+	*timestamp = rte_ns_to_timespec(ns);
+
+l_end:
+	return ret;
+}
+
+static u64 sxe_timesync_tx_tstamp_cycles_get(struct sxe_adapter *adapter)
+{
+	return SXE_TIME_TO_NS(adapter->ptp_ctxt.tx_hwtstamp_nsec,
+				adapter->ptp_ctxt.tx_hwtstamp_sec);
+}
+
+s32 sxe_timesync_read_tx_timestamp(struct rte_eth_dev *dev,
+				 struct timespec *timestamp)
+{
+	struct sxe_adapter *adapter = dev->data->dev_private;
+	struct sxe_hw *hw = &adapter->hw;
+	u64 ns;
+	s32 ret = 0;
+	u64 tx_tstamp_cycles;
+	u32 ts_sec;
+	u32 ts_ns;
+	u32 last_sec;
+	u32 last_ns;
+	bool tx_tstamp_valid = true;
+	u8 i;
+
+	sxe_hw_ptp_tx_timestamp_get(hw, &ts_sec, &ts_ns);
+	if (ts_ns  != adapter->ptp_ctxt.tx_hwtstamp_nsec ||
+		ts_sec != adapter->ptp_ctxt.tx_hwtstamp_sec) {
+		for (i = 0; i < SXE_TXTS_POLL_CHECK; i++)
+			sxe_hw_ptp_tx_timestamp_get(hw, &last_sec, &last_ns);
+
+		for (; i < SXE_TXTS_POLL; i++) {
+			sxe_hw_ptp_tx_timestamp_get(hw, &ts_sec, &ts_ns);
+			if (last_ns != ts_ns || last_sec != ts_sec) {
+				tx_tstamp_valid = false;
+				break;
+			}
+		}
+	}
+
+	if (!tx_tstamp_valid || (ts_ns == adapter->ptp_ctxt.tx_hwtstamp_nsec &&
+			ts_sec == adapter->ptp_ctxt.tx_hwtstamp_sec)) {
+		PMD_LOG_DEBUG(DRV, "no valid ptp timestamp in tx register");
+		ret = -EINVAL;
+		goto l_end;
+	} else {
+		adapter->ptp_ctxt.tx_hwtstamp_nsec = ts_ns;
+		adapter->ptp_ctxt.tx_hwtstamp_sec  = ts_sec;
+		tx_tstamp_cycles =
+			sxe_timesync_tx_tstamp_cycles_get(adapter);
+		ns = rte_timecounter_update(&adapter->ptp_ctxt.tx_tstamp_tc,
+						tx_tstamp_cycles);
+		PMD_LOG_DEBUG(DRV, "got tx_tstamp_cycles = %"
+			SXE_PRIU64 "ns=%" SXE_PRIU64, tx_tstamp_cycles, ns);
+		*timestamp = rte_ns_to_timespec(ns);
+	}
+
+l_end:
+	return ret;
+}
+
+s32 sxe_timesync_adjust_time(struct rte_eth_dev *dev, s64 delta)
+{
+	struct sxe_adapter *adapter = dev->data->dev_private;
+
+	PMD_LOG_DEBUG(DRV, "got delta = %" SXE_PRID64, delta);
+
+	adapter->ptp_ctxt.systime_tc.nsec += delta;
+	adapter->ptp_ctxt.rx_tstamp_tc.nsec += delta;
+	adapter->ptp_ctxt.tx_tstamp_tc.nsec += delta;
+
+	return 0;
+}
+
+s32 sxe_timesync_read_time(struct rte_eth_dev *dev, struct timespec *ts)
+{
+	struct sxe_adapter *adapter = dev->data->dev_private;
+	struct sxe_hw *hw = &adapter->hw;
+	u64 ns, systime_cycles;
+
+	systime_cycles = sxe_hw_ptp_systime_get(hw);
+	ns = rte_timecounter_update(&adapter->ptp_ctxt.systime_tc, systime_cycles);
+	PMD_LOG_DEBUG(DRV, "got systime_cycles = %" SXE_PRIU64 "ns=%" SXE_PRIU64,
+			systime_cycles, ns);
+	*ts = rte_ns_to_timespec(ns);
+
+	return 0;
+}
+
+s32 sxe_timesync_write_time(struct rte_eth_dev *dev,
+					const struct timespec *ts)
+{
+	u64 ns;
+	struct sxe_adapter *adapter = dev->data->dev_private;
+
+	ns = rte_timespec_to_ns(ts);
+	PMD_LOG_DEBUG(DRV, "set systime ns = %" SXE_PRIU64, ns);
+	adapter->ptp_ctxt.systime_tc.nsec = ns;
+	adapter->ptp_ctxt.rx_tstamp_tc.nsec = ns;
+	adapter->ptp_ctxt.tx_tstamp_tc.nsec = ns;
+
+	return 0;
+}
diff --git a/drivers/net/sxe/pf/sxe_ptp.h b/drivers/net/sxe/pf/sxe_ptp.h
new file mode 100644
index 0000000000..14971b2d50
--- /dev/null
+++ b/drivers/net/sxe/pf/sxe_ptp.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C), 2022, Linkdata Technology Co., Ltd.
+ */
+
+#ifndef __SXE_PTP_H__
+#define __SXE_PTP_H__
+
+s32 sxe_timesync_enable(struct rte_eth_dev *dev);
+
+s32 sxe_timesync_disable(struct rte_eth_dev *dev);
+
+s32 sxe_timesync_read_rx_timestamp(struct rte_eth_dev *dev,
+				 struct timespec *timestamp,
+				 u32 flags __rte_unused);
+
+s32 sxe_timesync_read_tx_timestamp(struct rte_eth_dev *dev,
+				 struct timespec *timestamp);
+
+s32 sxe_timesync_adjust_time(struct rte_eth_dev *dev, s64 delta);
+
+s32 sxe_timesync_read_time(struct rte_eth_dev *dev, struct timespec *ts);
+
+s32 sxe_timesync_write_time(struct rte_eth_dev *dev,
+					const struct timespec *ts);
+
+#endif
-- 
2.18.2