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@@ -53,6 +53,15 @@ enum {
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MLX5E_EVENT_MODE_ONCE_TILL_ARM = 0x2,
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};
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+enum {
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+ MLX5E_MTPPS_FS_ENABLE = BIT(0x0),
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+ MLX5E_MTPPS_FS_PATTERN = BIT(0x2),
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+ MLX5E_MTPPS_FS_PIN_MODE = BIT(0x3),
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+ MLX5E_MTPPS_FS_TIME_STAMP = BIT(0x4),
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+ MLX5E_MTPPS_FS_OUT_PULSE_DURATION = BIT(0x5),
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+ MLX5E_MTPPS_FS_ENH_OUT_PER_ADJ = BIT(0x7),
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+};
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+
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void mlx5e_fill_hwstamp(struct mlx5e_tstamp *tstamp, u64 timestamp,
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struct skb_shared_hwtstamps *hwts)
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{
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@@ -73,17 +82,46 @@ static u64 mlx5e_read_internal_timer(const struct cyclecounter *cc)
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return mlx5_read_internal_timer(tstamp->mdev) & cc->mask;
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}
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+static void mlx5e_pps_out(struct work_struct *work)
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+{
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+ struct mlx5e_pps *pps_info = container_of(work, struct mlx5e_pps,
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+ out_work);
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+ struct mlx5e_tstamp *tstamp = container_of(pps_info, struct mlx5e_tstamp,
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+ pps_info);
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+ u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
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+ unsigned long flags;
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+ int i;
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+
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+ for (i = 0; i < tstamp->ptp_info.n_pins; i++) {
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+ u64 tstart;
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+
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+ write_lock_irqsave(&tstamp->lock, flags);
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+ tstart = tstamp->pps_info.start[i];
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+ tstamp->pps_info.start[i] = 0;
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+ write_unlock_irqrestore(&tstamp->lock, flags);
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+ if (!tstart)
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+ continue;
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+
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+ MLX5_SET(mtpps_reg, in, pin, i);
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+ MLX5_SET64(mtpps_reg, in, time_stamp, tstart);
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+ MLX5_SET(mtpps_reg, in, field_select, MLX5E_MTPPS_FS_TIME_STAMP);
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+ mlx5_set_mtpps(tstamp->mdev, in, sizeof(in));
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+ }
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+}
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+
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static void mlx5e_timestamp_overflow(struct work_struct *work)
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{
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struct delayed_work *dwork = to_delayed_work(work);
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struct mlx5e_tstamp *tstamp = container_of(dwork, struct mlx5e_tstamp,
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overflow_work);
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+ struct mlx5e_priv *priv = container_of(tstamp, struct mlx5e_priv, tstamp);
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unsigned long flags;
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write_lock_irqsave(&tstamp->lock, flags);
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timecounter_read(&tstamp->clock);
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write_unlock_irqrestore(&tstamp->lock, flags);
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- schedule_delayed_work(&tstamp->overflow_work, tstamp->overflow_period);
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+ queue_delayed_work(priv->wq, &tstamp->overflow_work,
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+ msecs_to_jiffies(tstamp->overflow_period * 1000));
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}
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int mlx5e_hwstamp_set(struct mlx5e_priv *priv, struct ifreq *ifr)
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@@ -213,18 +251,6 @@ static int mlx5e_ptp_adjfreq(struct ptp_clock_info *ptp, s32 delta)
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int neg_adj = 0;
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struct mlx5e_tstamp *tstamp = container_of(ptp, struct mlx5e_tstamp,
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ptp_info);
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- struct mlx5e_priv *priv =
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- container_of(tstamp, struct mlx5e_priv, tstamp);
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-
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- if (MLX5_CAP_GEN(priv->mdev, pps_modify)) {
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- u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
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-
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- /* For future use need to add a loop for finding all 1PPS out pins */
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- MLX5_SET(mtpps_reg, in, pin_mode, MLX5E_PIN_MODE_OUT);
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- MLX5_SET(mtpps_reg, in, out_periodic_adjustment, delta & 0xFFFF);
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-
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- mlx5_set_mtpps(priv->mdev, in, sizeof(in));
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- }
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if (delta < 0) {
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neg_adj = 1;
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@@ -253,12 +279,13 @@ static int mlx5e_extts_configure(struct ptp_clock_info *ptp,
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struct mlx5e_priv *priv =
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container_of(tstamp, struct mlx5e_priv, tstamp);
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u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
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+ u32 field_select = 0;
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+ u8 pin_mode = 0;
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u8 pattern = 0;
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int pin = -1;
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int err = 0;
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- if (!MLX5_CAP_GEN(priv->mdev, pps) ||
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- !MLX5_CAP_GEN(priv->mdev, pps_modify))
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+ if (!MLX5_PPS_CAP(priv->mdev))
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return -EOPNOTSUPP;
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if (rq->extts.index >= tstamp->ptp_info.n_pins)
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@@ -268,15 +295,21 @@ static int mlx5e_extts_configure(struct ptp_clock_info *ptp,
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pin = ptp_find_pin(tstamp->ptp, PTP_PF_EXTTS, rq->extts.index);
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if (pin < 0)
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return -EBUSY;
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+ pin_mode = MLX5E_PIN_MODE_IN;
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+ pattern = !!(rq->extts.flags & PTP_FALLING_EDGE);
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+ field_select = MLX5E_MTPPS_FS_PIN_MODE |
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+ MLX5E_MTPPS_FS_PATTERN |
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+ MLX5E_MTPPS_FS_ENABLE;
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+ } else {
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+ pin = rq->extts.index;
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+ field_select = MLX5E_MTPPS_FS_ENABLE;
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}
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- if (rq->extts.flags & PTP_FALLING_EDGE)
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- pattern = 1;
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-
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MLX5_SET(mtpps_reg, in, pin, pin);
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- MLX5_SET(mtpps_reg, in, pin_mode, MLX5E_PIN_MODE_IN);
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+ MLX5_SET(mtpps_reg, in, pin_mode, pin_mode);
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MLX5_SET(mtpps_reg, in, pattern, pattern);
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MLX5_SET(mtpps_reg, in, enable, on);
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+ MLX5_SET(mtpps_reg, in, field_select, field_select);
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err = mlx5_set_mtpps(priv->mdev, in, sizeof(in));
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if (err)
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@@ -295,14 +328,18 @@ static int mlx5e_perout_configure(struct ptp_clock_info *ptp,
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struct mlx5e_priv *priv =
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container_of(tstamp, struct mlx5e_priv, tstamp);
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u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
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- u64 nsec_now, nsec_delta, time_stamp;
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+ u64 nsec_now, nsec_delta, time_stamp = 0;
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u64 cycles_now, cycles_delta;
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struct timespec64 ts;
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unsigned long flags;
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+ u32 field_select = 0;
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+ u8 pin_mode = 0;
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+ u8 pattern = 0;
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int pin = -1;
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+ int err = 0;
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s64 ns;
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- if (!MLX5_CAP_GEN(priv->mdev, pps_modify))
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+ if (!MLX5_PPS_CAP(priv->mdev))
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return -EOPNOTSUPP;
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if (rq->perout.index >= tstamp->ptp_info.n_pins)
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@@ -313,32 +350,60 @@ static int mlx5e_perout_configure(struct ptp_clock_info *ptp,
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rq->perout.index);
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if (pin < 0)
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return -EBUSY;
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- }
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- ts.tv_sec = rq->perout.period.sec;
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- ts.tv_nsec = rq->perout.period.nsec;
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- ns = timespec64_to_ns(&ts);
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- if (on)
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+ pin_mode = MLX5E_PIN_MODE_OUT;
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+ pattern = MLX5E_OUT_PATTERN_PERIODIC;
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+ ts.tv_sec = rq->perout.period.sec;
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+ ts.tv_nsec = rq->perout.period.nsec;
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+ ns = timespec64_to_ns(&ts);
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+
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if ((ns >> 1) != 500000000LL)
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return -EINVAL;
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- ts.tv_sec = rq->perout.start.sec;
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- ts.tv_nsec = rq->perout.start.nsec;
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- ns = timespec64_to_ns(&ts);
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- cycles_now = mlx5_read_internal_timer(tstamp->mdev);
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- write_lock_irqsave(&tstamp->lock, flags);
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- nsec_now = timecounter_cyc2time(&tstamp->clock, cycles_now);
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- nsec_delta = ns - nsec_now;
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- cycles_delta = div64_u64(nsec_delta << tstamp->cycles.shift,
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- tstamp->cycles.mult);
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- write_unlock_irqrestore(&tstamp->lock, flags);
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- time_stamp = cycles_now + cycles_delta;
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+
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+ ts.tv_sec = rq->perout.start.sec;
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+ ts.tv_nsec = rq->perout.start.nsec;
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+ ns = timespec64_to_ns(&ts);
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+ cycles_now = mlx5_read_internal_timer(tstamp->mdev);
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+ write_lock_irqsave(&tstamp->lock, flags);
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+ nsec_now = timecounter_cyc2time(&tstamp->clock, cycles_now);
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+ nsec_delta = ns - nsec_now;
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+ cycles_delta = div64_u64(nsec_delta << tstamp->cycles.shift,
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+ tstamp->cycles.mult);
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+ write_unlock_irqrestore(&tstamp->lock, flags);
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+ time_stamp = cycles_now + cycles_delta;
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+ field_select = MLX5E_MTPPS_FS_PIN_MODE |
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+ MLX5E_MTPPS_FS_PATTERN |
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+ MLX5E_MTPPS_FS_ENABLE |
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+ MLX5E_MTPPS_FS_TIME_STAMP;
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+ } else {
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+ pin = rq->perout.index;
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+ field_select = MLX5E_MTPPS_FS_ENABLE;
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+ }
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+
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MLX5_SET(mtpps_reg, in, pin, pin);
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- MLX5_SET(mtpps_reg, in, pin_mode, MLX5E_PIN_MODE_OUT);
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- MLX5_SET(mtpps_reg, in, pattern, MLX5E_OUT_PATTERN_PERIODIC);
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+ MLX5_SET(mtpps_reg, in, pin_mode, pin_mode);
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+ MLX5_SET(mtpps_reg, in, pattern, pattern);
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MLX5_SET(mtpps_reg, in, enable, on);
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MLX5_SET64(mtpps_reg, in, time_stamp, time_stamp);
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+ MLX5_SET(mtpps_reg, in, field_select, field_select);
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+
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+ err = mlx5_set_mtpps(priv->mdev, in, sizeof(in));
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+ if (err)
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+ return err;
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- return mlx5_set_mtpps(priv->mdev, in, sizeof(in));
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+ return mlx5_set_mtppse(priv->mdev, pin, 0,
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+ MLX5E_EVENT_MODE_REPETETIVE & on);
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+}
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+
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+static int mlx5e_pps_configure(struct ptp_clock_info *ptp,
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+ struct ptp_clock_request *rq,
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+ int on)
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+{
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+ struct mlx5e_tstamp *tstamp =
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+ container_of(ptp, struct mlx5e_tstamp, ptp_info);
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+
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+ tstamp->pps_info.enabled = !!on;
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+ return 0;
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}
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static int mlx5e_ptp_enable(struct ptp_clock_info *ptp,
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@@ -350,6 +415,8 @@ static int mlx5e_ptp_enable(struct ptp_clock_info *ptp,
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return mlx5e_extts_configure(ptp, rq, on);
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case PTP_CLK_REQ_PEROUT:
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return mlx5e_perout_configure(ptp, rq, on);
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+ case PTP_CLK_REQ_PPS:
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+ return mlx5e_pps_configure(ptp, rq, on);
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default:
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return -EOPNOTSUPP;
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}
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@@ -395,6 +462,7 @@ static int mlx5e_init_pin_config(struct mlx5e_tstamp *tstamp)
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return -ENOMEM;
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tstamp->ptp_info.enable = mlx5e_ptp_enable;
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tstamp->ptp_info.verify = mlx5e_ptp_verify;
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+ tstamp->ptp_info.pps = 1;
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for (i = 0; i < tstamp->ptp_info.n_pins; i++) {
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snprintf(tstamp->ptp_info.pin_config[i].name,
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@@ -422,22 +490,56 @@ static void mlx5e_get_pps_caps(struct mlx5e_priv *priv,
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tstamp->ptp_info.n_per_out = MLX5_GET(mtpps_reg, out,
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cap_max_num_of_pps_out_pins);
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- tstamp->pps_pin_caps[0] = MLX5_GET(mtpps_reg, out, cap_pin_0_mode);
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- tstamp->pps_pin_caps[1] = MLX5_GET(mtpps_reg, out, cap_pin_1_mode);
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- tstamp->pps_pin_caps[2] = MLX5_GET(mtpps_reg, out, cap_pin_2_mode);
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- tstamp->pps_pin_caps[3] = MLX5_GET(mtpps_reg, out, cap_pin_3_mode);
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- tstamp->pps_pin_caps[4] = MLX5_GET(mtpps_reg, out, cap_pin_4_mode);
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- tstamp->pps_pin_caps[5] = MLX5_GET(mtpps_reg, out, cap_pin_5_mode);
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- tstamp->pps_pin_caps[6] = MLX5_GET(mtpps_reg, out, cap_pin_6_mode);
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- tstamp->pps_pin_caps[7] = MLX5_GET(mtpps_reg, out, cap_pin_7_mode);
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+ tstamp->pps_info.pin_caps[0] = MLX5_GET(mtpps_reg, out, cap_pin_0_mode);
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+ tstamp->pps_info.pin_caps[1] = MLX5_GET(mtpps_reg, out, cap_pin_1_mode);
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+ tstamp->pps_info.pin_caps[2] = MLX5_GET(mtpps_reg, out, cap_pin_2_mode);
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+ tstamp->pps_info.pin_caps[3] = MLX5_GET(mtpps_reg, out, cap_pin_3_mode);
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+ tstamp->pps_info.pin_caps[4] = MLX5_GET(mtpps_reg, out, cap_pin_4_mode);
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+ tstamp->pps_info.pin_caps[5] = MLX5_GET(mtpps_reg, out, cap_pin_5_mode);
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+ tstamp->pps_info.pin_caps[6] = MLX5_GET(mtpps_reg, out, cap_pin_6_mode);
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+ tstamp->pps_info.pin_caps[7] = MLX5_GET(mtpps_reg, out, cap_pin_7_mode);
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}
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void mlx5e_pps_event_handler(struct mlx5e_priv *priv,
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struct ptp_clock_event *event)
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{
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+ struct net_device *netdev = priv->netdev;
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struct mlx5e_tstamp *tstamp = &priv->tstamp;
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+ struct timespec64 ts;
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+ u64 nsec_now, nsec_delta;
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+ u64 cycles_now, cycles_delta;
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+ int pin = event->index;
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+ s64 ns;
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+ unsigned long flags;
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- ptp_clock_event(tstamp->ptp, event);
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+ switch (tstamp->ptp_info.pin_config[pin].func) {
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+ case PTP_PF_EXTTS:
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+ if (tstamp->pps_info.enabled) {
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+ event->type = PTP_CLOCK_PPSUSR;
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+ event->pps_times.ts_real = ns_to_timespec64(event->timestamp);
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+ } else {
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+ event->type = PTP_CLOCK_EXTTS;
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+ }
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+ ptp_clock_event(tstamp->ptp, event);
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+ break;
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+ case PTP_PF_PEROUT:
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+ mlx5e_ptp_gettime(&tstamp->ptp_info, &ts);
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+ cycles_now = mlx5_read_internal_timer(tstamp->mdev);
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+ ts.tv_sec += 1;
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+ ts.tv_nsec = 0;
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+ ns = timespec64_to_ns(&ts);
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+ write_lock_irqsave(&tstamp->lock, flags);
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+ nsec_now = timecounter_cyc2time(&tstamp->clock, cycles_now);
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+ nsec_delta = ns - nsec_now;
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+ cycles_delta = div64_u64(nsec_delta << tstamp->cycles.shift,
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+ tstamp->cycles.mult);
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+ tstamp->pps_info.start[pin] = cycles_now + cycles_delta;
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+ queue_work(priv->wq, &tstamp->pps_info.out_work);
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+ write_unlock_irqrestore(&tstamp->lock, flags);
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+ break;
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+ default:
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+ netdev_err(netdev, "%s: Unhandled event\n", __func__);
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+ }
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}
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void mlx5e_timestamp_init(struct mlx5e_priv *priv)
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@@ -473,9 +575,10 @@ void mlx5e_timestamp_init(struct mlx5e_priv *priv)
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do_div(ns, NSEC_PER_SEC / 2 / HZ);
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tstamp->overflow_period = ns;
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+ INIT_WORK(&tstamp->pps_info.out_work, mlx5e_pps_out);
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INIT_DELAYED_WORK(&tstamp->overflow_work, mlx5e_timestamp_overflow);
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if (tstamp->overflow_period)
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- schedule_delayed_work(&tstamp->overflow_work, 0);
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+ queue_delayed_work(priv->wq, &tstamp->overflow_work, 0);
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else
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mlx5_core_warn(priv->mdev, "invalid overflow period, overflow_work is not scheduled\n");
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@@ -484,16 +587,10 @@ void mlx5e_timestamp_init(struct mlx5e_priv *priv)
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snprintf(tstamp->ptp_info.name, 16, "mlx5 ptp");
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|
|
|
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/* Initialize 1PPS data structures */
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|
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-#define MAX_PIN_NUM 8
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- tstamp->pps_pin_caps = kzalloc(sizeof(u8) * MAX_PIN_NUM, GFP_KERNEL);
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|
|
- if (tstamp->pps_pin_caps) {
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|
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- if (MLX5_CAP_GEN(priv->mdev, pps))
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- mlx5e_get_pps_caps(priv, tstamp);
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- if (tstamp->ptp_info.n_pins)
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- mlx5e_init_pin_config(tstamp);
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|
- } else {
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- mlx5_core_warn(priv->mdev, "1PPS initialization failed\n");
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|
|
- }
|
|
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+ if (MLX5_PPS_CAP(priv->mdev))
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|
|
+ mlx5e_get_pps_caps(priv, tstamp);
|
|
|
+ if (tstamp->ptp_info.n_pins)
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|
|
+ mlx5e_init_pin_config(tstamp);
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|
|
|
|
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tstamp->ptp = ptp_clock_register(&tstamp->ptp_info,
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|
|
&priv->mdev->pdev->dev);
|
|
@@ -516,8 +613,7 @@ void mlx5e_timestamp_cleanup(struct mlx5e_priv *priv)
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|
|
priv->tstamp.ptp = NULL;
|
|
|
}
|
|
|
|
|
|
- kfree(tstamp->pps_pin_caps);
|
|
|
- kfree(tstamp->ptp_info.pin_config);
|
|
|
-
|
|
|
+ cancel_work_sync(&tstamp->pps_info.out_work);
|
|
|
cancel_delayed_work_sync(&tstamp->overflow_work);
|
|
|
+ kfree(tstamp->ptp_info.pin_config);
|
|
|
}
|