Commit 99b9a678 authored by Aya Levin's avatar Aya Levin Committed by Saeed Mahameed
Browse files

net/mlx5: Avoid generating event after PPS out in Real time mode 



When in Real-time mode, HW clock is synced with the PTP daemon. Hence
driver should not re-calibrate the next pulse (via MTPPSE repetitive
events mechanism).

This patch arms repetitive events only in free-running mode.

Fixes: 432119de ("net/mlx5: Add cyc2time HW translation mode support")
Signed-off-by: default avatarAya Levin <ayal@nvidia.com>
Reviewed-by: default avatarEran Ben Elisha <eranbe@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent 64728294

drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c

+6 −8
Original line number Diff line number Diff line
@@ -472,6 +472,7 @@ static int mlx5_perout_configure(struct ptp_clock_info *ptp, 
			container_of(ptp, struct mlx5_clock, ptp_info);

	struct mlx5_core_dev *mdev =

			container_of(clock, struct mlx5_core_dev, clock);

	bool rt_mode = mlx5_real_time_mode(mdev);

	u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};

	struct timespec64 ts;

	u32 field_select = 0;
@@ -535,6 +536,9 @@ static int mlx5_perout_configure(struct ptp_clock_info *ptp, 
	if (err)

		return err;



	if (rt_mode)

		return 0;



	return mlx5_set_mtppse(mdev, pin, 0,

			       MLX5_EVENT_MODE_REPETETIVE & on);

}
@@ -702,20 +706,14 @@ static void ts_next_sec(struct timespec64 *ts) 
static u64 perout_conf_next_event_timer(struct mlx5_core_dev *mdev,

					struct mlx5_clock *clock)

{

	bool rt_mode = mlx5_real_time_mode(mdev);

	struct timespec64 ts;

	s64 target_ns;



	if (rt_mode)

		ts = mlx5_ptp_gettimex_real_time(mdev, NULL);

	else

	mlx5_ptp_gettimex(&clock->ptp_info, &ts, NULL);



	ts_next_sec(&ts);

	target_ns = timespec64_to_ns(&ts);



	return rt_mode ? perout_conf_real_time(ts.tv_sec) :

			 find_target_cycles(mdev, target_ns);

	return find_target_cycles(mdev, target_ns);

}



static int mlx5_pps_event(struct notifier_block *nb,