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

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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: 432119de33 ("net/mlx5: Add cyc2time HW translation mode support")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Eran Ben Elisha <eranbe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Aya Levin 2021-09-23 15:30:01 +03:00 committed by Saeed Mahameed
parent 6472829470
commit 99b9a678b2
1 changed files with 6 additions and 8 deletions
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14
drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c
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@ -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);
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,