diff options
| author | Miroslav Lichvar <mlichvar@redhat.com> | 2018-12-03 13:59:42 +0100 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-12-20 05:06:00 -0800 |
| commit | 4a0475d57ad134429f9bb56068bb738b4afc5992 (patch) | |
| tree | 732560128a19a73aacdab980e52bed3d473a5a34 /drivers/net/ethernet/mellanox/mlx5/core/main.c | |
| parent | 5d8678365c90b9ce1fd2243ff5ea562609f6cec1 (diff) | |
| download | linux-4a0475d57ad134429f9bb56068bb738b4afc5992.tar.bz2 | |
mlx5: extend PTP gettime function to read system clock
Read the system time right before and immediately after reading the low
register of the internal timer. This adds support for the
PTP_SYS_OFFSET_EXTENDED ioctl.
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/main.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/main.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index c23553164e0d..77896c11f6f3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -580,15 +580,22 @@ int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id) return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); } -u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev) +u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev, + struct ptp_system_timestamp *sts) { u32 timer_h, timer_h1, timer_l; timer_h = ioread32be(&dev->iseg->internal_timer_h); + ptp_read_system_prets(sts); timer_l = ioread32be(&dev->iseg->internal_timer_l); + ptp_read_system_postts(sts); timer_h1 = ioread32be(&dev->iseg->internal_timer_h); - if (timer_h != timer_h1) /* wrap around */ + if (timer_h != timer_h1) { + /* wrap around */ + ptp_read_system_prets(sts); timer_l = ioread32be(&dev->iseg->internal_timer_l); + ptp_read_system_postts(sts); + } return (u64)timer_l | (u64)timer_h1 << 32; } |