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net/mlx5e: Fix broken disable 1PPS flow 

Need to disable the MTPPS and unsubscribe from the pulse events
when user disables the 1PPS functionality.

Fixes: ee7f12205a ('net/mlx5e: Implement 1PPS support')
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Eugenia Emantayev 2017-05-28 12:01:38 +03:00 committed by Saeed Mahameed
parent fa3676885e
commit 49c5031ca6
1 changed files with 46 additions and 29 deletions
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75
drivers/net/ethernet/mellanox/mlx5/core/en_clock.c
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@ -265,6 +265,8 @@ static int mlx5e_extts_configure(struct ptp_clock_info *ptp,
struct mlx5e_priv *priv =
container_of(tstamp, struct mlx5e_priv, tstamp);
u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
u32 field_select = 0;
u8 pin_mode = 0;
u8 pattern = 0;
int pin = -1;
int err = 0;
@ -279,18 +281,21 @@ static int mlx5e_extts_configure(struct ptp_clock_info *ptp,
pin = ptp_find_pin(tstamp->ptp, PTP_PF_EXTTS, rq->extts.index);
if (pin < 0)
return -EBUSY;
pin_mode = MLX5E_PIN_MODE_IN;
pattern = !!(rq->extts.flags & PTP_FALLING_EDGE);
field_select = MLX5E_MTPPS_FS_PIN_MODE |
MLX5E_MTPPS_FS_PATTERN |
MLX5E_MTPPS_FS_ENABLE;
} else {
pin = rq->extts.index;
field_select = MLX5E_MTPPS_FS_ENABLE;
}
if (rq->extts.flags & PTP_FALLING_EDGE)
pattern = 1;
MLX5_SET(mtpps_reg, in, pin, pin);
MLX5_SET(mtpps_reg, in, pin_mode, MLX5E_PIN_MODE_IN);
MLX5_SET(mtpps_reg, in, pin_mode, pin_mode);
MLX5_SET(mtpps_reg, in, pattern, pattern);
MLX5_SET(mtpps_reg, in, enable, on);
MLX5_SET(mtpps_reg, in, field_select, MLX5E_MTPPS_FS_PIN_MODE |
MLX5E_MTPPS_FS_PATTERN |
MLX5E_MTPPS_FS_ENABLE);
MLX5_SET(mtpps_reg, in, field_select, field_select);
err = mlx5_set_mtpps(priv->mdev, in, sizeof(in));
if (err)
@ -313,6 +318,9 @@ static int mlx5e_perout_configure(struct ptp_clock_info *ptp,
u64 cycles_now, cycles_delta;
struct timespec64 ts;
unsigned long flags;
u32 field_select = 0;
u8 pin_mode = 0;
u8 pattern = 0;
int pin = -1;
s64 ns;
@ -327,34 +335,43 @@ static int mlx5e_perout_configure(struct ptp_clock_info *ptp,
rq->perout.index);
if (pin < 0)
return -EBUSY;
}
ts.tv_sec = rq->perout.period.sec;
ts.tv_nsec = rq->perout.period.nsec;
ns = timespec64_to_ns(&ts);
if (on)
pin_mode = MLX5E_PIN_MODE_OUT;
pattern = MLX5E_OUT_PATTERN_PERIODIC;
ts.tv_sec = rq->perout.period.sec;
ts.tv_nsec = rq->perout.period.nsec;
ns = timespec64_to_ns(&ts);
if ((ns >> 1) != 500000000LL)
return -EINVAL;
ts.tv_sec = rq->perout.start.sec;
ts.tv_nsec = rq->perout.start.nsec;
ns = timespec64_to_ns(&ts);
cycles_now = mlx5_read_internal_timer(tstamp->mdev);
write_lock_irqsave(&tstamp->lock, flags);
nsec_now = timecounter_cyc2time(&tstamp->clock, cycles_now);
nsec_delta = ns - nsec_now;
cycles_delta = div64_u64(nsec_delta << tstamp->cycles.shift,
tstamp->cycles.mult);
write_unlock_irqrestore(&tstamp->lock, flags);
time_stamp = cycles_now + cycles_delta;
ts.tv_sec = rq->perout.start.sec;
ts.tv_nsec = rq->perout.start.nsec;
ns = timespec64_to_ns(&ts);
cycles_now = mlx5_read_internal_timer(tstamp->mdev);
write_lock_irqsave(&tstamp->lock, flags);
nsec_now = timecounter_cyc2time(&tstamp->clock, cycles_now);
nsec_delta = ns - nsec_now;
cycles_delta = div64_u64(nsec_delta << tstamp->cycles.shift,
tstamp->cycles.mult);
write_unlock_irqrestore(&tstamp->lock, flags);
time_stamp = cycles_now + cycles_delta;
field_select = MLX5E_MTPPS_FS_PIN_MODE |
MLX5E_MTPPS_FS_PATTERN |
MLX5E_MTPPS_FS_ENABLE |
MLX5E_MTPPS_FS_TIME_STAMP;
} else {
pin = rq->perout.index;
field_select = MLX5E_MTPPS_FS_ENABLE;
}
MLX5_SET(mtpps_reg, in, pin, pin);
MLX5_SET(mtpps_reg, in, pin_mode, MLX5E_PIN_MODE_OUT);
MLX5_SET(mtpps_reg, in, pattern, MLX5E_OUT_PATTERN_PERIODIC);
MLX5_SET(mtpps_reg, in, pin_mode, pin_mode);
MLX5_SET(mtpps_reg, in, pattern, pattern);
MLX5_SET(mtpps_reg, in, enable, on);
MLX5_SET64(mtpps_reg, in, time_stamp, time_stamp);
MLX5_SET(mtpps_reg, in, field_select, MLX5E_MTPPS_FS_PIN_MODE |
MLX5E_MTPPS_FS_PATTERN |
MLX5E_MTPPS_FS_ENABLE |
MLX5E_MTPPS_FS_TIME_STAMP);
MLX5_SET(mtpps_reg, in, field_select, field_select);
return mlx5_set_mtpps(priv->mdev, in, sizeof(in));
}