diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h index 31600924bdc3..bd95b9f8d143 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h @@ -33,6 +33,26 @@ #ifndef __LIB_CLOCK_H__ #define __LIB_CLOCK_H__ +static inline bool mlx5_is_real_time_rq(struct mlx5_core_dev *mdev) +{ + u8 rq_ts_format_cap = MLX5_CAP_GEN(mdev, rq_ts_format); + + return (rq_ts_format_cap == MLX5_TIMESTAMP_FORMAT_CAP_REAL_TIME || + rq_ts_format_cap == + MLX5_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME); +} + +static inline bool mlx5_is_real_time_sq(struct mlx5_core_dev *mdev) +{ + u8 sq_ts_format_cap = MLX5_CAP_GEN(mdev, sq_ts_format); + + return (sq_ts_format_cap == MLX5_TIMESTAMP_FORMAT_CAP_REAL_TIME || + sq_ts_format_cap == + MLX5_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME); +} + +typedef ktime_t (*cqe_ts_to_ns)(struct mlx5_clock *, u64); + #if IS_ENABLED(CONFIG_PTP_1588_CLOCK) void mlx5_init_clock(struct mlx5_core_dev *mdev); void mlx5_cleanup_clock(struct mlx5_core_dev *mdev); @@ -45,17 +65,27 @@ static inline int mlx5_clock_get_ptp_index(struct mlx5_core_dev *mdev) static inline ktime_t mlx5_timecounter_cyc2time(struct mlx5_clock *clock, u64 timestamp) { + struct mlx5_timer *timer = &clock->timer; unsigned int seq; u64 nsec; do { seq = read_seqbegin(&clock->lock); - nsec = timecounter_cyc2time(&clock->tc, timestamp); + nsec = timecounter_cyc2time(&timer->tc, timestamp); } while (read_seqretry(&clock->lock, seq)); return ns_to_ktime(nsec); } +#define REAL_TIME_TO_NS(hi, low) (((u64)hi) * NSEC_PER_SEC + ((u64)low)) + +static inline ktime_t mlx5_real_time_cyc2time(struct mlx5_clock *clock, + u64 timestamp) +{ + u64 time = REAL_TIME_TO_NS(timestamp >> 32, timestamp & 0xFFFFFFFF); + + return ns_to_ktime(time); +} #else static inline void mlx5_init_clock(struct mlx5_core_dev *mdev) {} static inline void mlx5_cleanup_clock(struct mlx5_core_dev *mdev) {} @@ -69,6 +99,23 @@ static inline ktime_t mlx5_timecounter_cyc2time(struct mlx5_clock *clock, { return 0; } + +static inline ktime_t mlx5_real_time_cyc2time(struct mlx5_clock *clock, + u64 timestamp) +{ + return 0; +} #endif +static inline cqe_ts_to_ns mlx5_rq_ts_translator(struct mlx5_core_dev *mdev) +{ + return mlx5_is_real_time_rq(mdev) ? mlx5_real_time_cyc2time : + mlx5_timecounter_cyc2time; +} + +static inline cqe_ts_to_ns mlx5_sq_ts_translator(struct mlx5_core_dev *mdev) +{ + return mlx5_is_real_time_sq(mdev) ? mlx5_real_time_cyc2time : + mlx5_timecounter_cyc2time; +} #endif |