From 6896b9dc63327691df470cc7b1d9bac8e8c673fe Mon Sep 17 00:00:00 2001
From: Huisong Li <lihuisong@huawei.com>
Date: Fri, 2 Jun 2023 19:41:55 +0800
Subject: net/hns3: fix RTC time on initialization

[ upstream commit 27f64ddb711901d06bbe337ab714989e799a36d0 ]

Driver doesn't initialize RTC time during probe phase, which
lead to an inaccurate time.

Fixes: 38b539d96eb6 ("net/hns3: support IEEE 1588 PTP")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
---
 drivers/net/hns3/hns3_ptp.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/net/hns3/hns3_ptp.c b/drivers/net/hns3/hns3_ptp.c
index db3c007b12..1e27e4aeca 100644
--- a/drivers/net/hns3/hns3_ptp.c
+++ b/drivers/net/hns3/hns3_ptp.c
@@ -56,9 +56,23 @@ hns3_ptp_int_en(struct hns3_hw *hw, bool en)
 	return ret;
 }
 
+static void
+hns3_ptp_timesync_write_time(struct hns3_hw *hw, const struct timespec *ts)
+{
+	uint64_t sec = ts->tv_sec;
+	uint64_t ns = ts->tv_nsec;
+
+	/* Set the timecounters to a new value. */
+	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_H, upper_32_bits(sec));
+	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_M, lower_32_bits(sec));
+	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_L, lower_32_bits(ns));
+	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_RDY, 1);
+}
+
 int
 hns3_ptp_init(struct hns3_hw *hw)
 {
+	struct timespec sys_time;
 	int ret;
 
 	if (!hns3_dev_get_support(hw, PTP))
@@ -71,6 +85,10 @@ hns3_ptp_init(struct hns3_hw *hw)
 	/* Start PTP timer */
 	hns3_write_dev(hw, HNS3_CFG_TIME_CYC_EN, 1);
 
+	/* Initializing the RTC. */
+	clock_gettime(CLOCK_REALTIME, &sys_time);
+	hns3_ptp_timesync_write_time(hw, &sys_time);
+
 	return 0;
 }
 
@@ -241,17 +259,11 @@ int
 hns3_timesync_write_time(struct rte_eth_dev *dev, const struct timespec *ts)
 {
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	uint64_t sec = ts->tv_sec;
-	uint64_t ns = ts->tv_nsec;
 
 	if (!hns3_dev_get_support(hw, PTP))
 		return -ENOTSUP;
 
-	/* Set the timecounters to a new value. */
-	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_H, upper_32_bits(sec));
-	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_M, lower_32_bits(sec));
-	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_L, lower_32_bits(ns));
-	hns3_write_dev(hw, HNS3_CFG_TIME_SYNC_RDY, 1);
+	hns3_ptp_timesync_write_time(hw, ts);
 
 	return 0;
 }
-- 
2.23.0