MLX5E_CYCLES_SHIFT = 23
};
+enum {
+ MLX5E_PIN_MODE_IN = 0x0,
+ MLX5E_PIN_MODE_OUT = 0x1,
+};
+
+enum {
+ MLX5E_OUT_PATTERN_PULSE = 0x0,
+ MLX5E_OUT_PATTERN_PERIODIC = 0x1,
+};
+
+enum {
+ MLX5E_EVENT_MODE_DISABLE = 0x0,
+ MLX5E_EVENT_MODE_REPETETIVE = 0x1,
+ MLX5E_EVENT_MODE_ONCE_TILL_ARM = 0x2,
+};
+
void mlx5e_fill_hwstamp(struct mlx5e_tstamp *tstamp, u64 timestamp,
struct skb_shared_hwtstamps *hwts)
{
int neg_adj = 0;
struct mlx5e_tstamp *tstamp = container_of(ptp, struct mlx5e_tstamp,
ptp_info);
+ struct mlx5e_priv *priv =
+ container_of(tstamp, struct mlx5e_priv, tstamp);
+
+ if (MLX5_CAP_GEN(priv->mdev, pps_modify)) {
+ u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
+
+ /* For future use need to add a loop for finding all 1PPS out pins */
+ MLX5_SET(mtpps_reg, in, pin_mode, MLX5E_PIN_MODE_OUT);
+ MLX5_SET(mtpps_reg, in, out_periodic_adjustment, delta & 0xFFFF);
+
+ mlx5_set_mtpps(priv->mdev, in, sizeof(in));
+ }
if (delta < 0) {
neg_adj = 1;
return 0;
}
+static int mlx5e_extts_configure(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq,
+ int on)
+{
+ struct mlx5e_tstamp *tstamp =
+ container_of(ptp, struct mlx5e_tstamp, ptp_info);
+ struct mlx5e_priv *priv =
+ container_of(tstamp, struct mlx5e_priv, tstamp);
+ u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
+ u8 pattern = 0;
+ int pin = -1;
+ int err = 0;
+
+ if (!MLX5_CAP_GEN(priv->mdev, pps) ||
+ !MLX5_CAP_GEN(priv->mdev, pps_modify))
+ return -EOPNOTSUPP;
+
+ if (rq->extts.index >= tstamp->ptp_info.n_pins)
+ return -EINVAL;
+
+ if (on) {
+ pin = ptp_find_pin(tstamp->ptp, PTP_PF_EXTTS, rq->extts.index);
+ if (pin < 0)
+ return -EBUSY;
+ }
+
+ 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, pattern, pattern);
+ MLX5_SET(mtpps_reg, in, enable, on);
+
+ err = mlx5_set_mtpps(priv->mdev, in, sizeof(in));
+ if (err)
+ return err;
+
+ return mlx5_set_mtppse(priv->mdev, pin, 0,
+ MLX5E_EVENT_MODE_REPETETIVE & on);
+}
+
+static int mlx5e_perout_configure(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq,
+ int on)
+{
+ struct mlx5e_tstamp *tstamp =
+ container_of(ptp, struct mlx5e_tstamp, ptp_info);
+ struct mlx5e_priv *priv =
+ container_of(tstamp, struct mlx5e_priv, tstamp);
+ u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
+ u64 nsec_now, nsec_delta, time_stamp;
+ u64 cycles_now, cycles_delta;
+ struct timespec64 ts;
+ unsigned long flags;
+ int pin = -1;
+ s64 ns;
+
+ if (!MLX5_CAP_GEN(priv->mdev, pps_modify))
+ return -EOPNOTSUPP;
+
+ if (rq->perout.index >= tstamp->ptp_info.n_pins)
+ return -EINVAL;
+
+ if (on) {
+ pin = ptp_find_pin(tstamp->ptp, PTP_PF_PEROUT,
+ 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)
+ 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;
+ 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, enable, on);
+ MLX5_SET64(mtpps_reg, in, time_stamp, time_stamp);
+
+ return mlx5_set_mtpps(priv->mdev, in, sizeof(in));
+}
+
+static int mlx5e_ptp_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq,
+ int on)
+{
+ switch (rq->type) {
+ case PTP_CLK_REQ_EXTTS:
+ return mlx5e_extts_configure(ptp, rq, on);
+ case PTP_CLK_REQ_PEROUT:
+ return mlx5e_perout_configure(ptp, rq, on);
+ default:
+ return -EOPNOTSUPP;
+ }
+ return 0;
+}
+
+static int mlx5e_ptp_verify(struct ptp_clock_info *ptp, unsigned int pin,
+ enum ptp_pin_function func, unsigned int chan)
+{
+ return (func == PTP_PF_PHYSYNC) ? -EOPNOTSUPP : 0;
+}
+
static const struct ptp_clock_info mlx5e_ptp_clock_info = {
.owner = THIS_MODULE,
.max_adj = 100000000,
.gettime64 = mlx5e_ptp_gettime,
.settime64 = mlx5e_ptp_settime,
.enable = NULL,
+ .verify = NULL,
};
static void mlx5e_timestamp_init_config(struct mlx5e_tstamp *tstamp)
tstamp->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
}
+static int mlx5e_init_pin_config(struct mlx5e_tstamp *tstamp)
+{
+ int i;
+
+ tstamp->ptp_info.pin_config =
+ kzalloc(sizeof(*tstamp->ptp_info.pin_config) *
+ tstamp->ptp_info.n_pins, GFP_KERNEL);
+ if (!tstamp->ptp_info.pin_config)
+ return -ENOMEM;
+ tstamp->ptp_info.enable = mlx5e_ptp_enable;
+ tstamp->ptp_info.verify = mlx5e_ptp_verify;
+
+ for (i = 0; i < tstamp->ptp_info.n_pins; i++) {
+ snprintf(tstamp->ptp_info.pin_config[i].name,
+ sizeof(tstamp->ptp_info.pin_config[i].name),
+ "mlx5_pps%d", i);
+ tstamp->ptp_info.pin_config[i].index = i;
+ tstamp->ptp_info.pin_config[i].func = PTP_PF_NONE;
+ tstamp->ptp_info.pin_config[i].chan = i;
+ }
+
+ return 0;
+}
+
+static void mlx5e_get_pps_caps(struct mlx5e_priv *priv,
+ struct mlx5e_tstamp *tstamp)
+{
+ u32 out[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
+
+ mlx5_query_mtpps(priv->mdev, out, sizeof(out));
+
+ tstamp->ptp_info.n_pins = MLX5_GET(mtpps_reg, out,
+ cap_number_of_pps_pins);
+ tstamp->ptp_info.n_ext_ts = MLX5_GET(mtpps_reg, out,
+ cap_max_num_of_pps_in_pins);
+ tstamp->ptp_info.n_per_out = MLX5_GET(mtpps_reg, out,
+ cap_max_num_of_pps_out_pins);
+
+ tstamp->pps_pin_caps[0] = MLX5_GET(mtpps_reg, out, cap_pin_0_mode);
+ tstamp->pps_pin_caps[1] = MLX5_GET(mtpps_reg, out, cap_pin_1_mode);
+ tstamp->pps_pin_caps[2] = MLX5_GET(mtpps_reg, out, cap_pin_2_mode);
+ tstamp->pps_pin_caps[3] = MLX5_GET(mtpps_reg, out, cap_pin_3_mode);
+ tstamp->pps_pin_caps[4] = MLX5_GET(mtpps_reg, out, cap_pin_4_mode);
+ tstamp->pps_pin_caps[5] = MLX5_GET(mtpps_reg, out, cap_pin_5_mode);
+ tstamp->pps_pin_caps[6] = MLX5_GET(mtpps_reg, out, cap_pin_6_mode);
+ tstamp->pps_pin_caps[7] = MLX5_GET(mtpps_reg, out, cap_pin_7_mode);
+}
+
+void mlx5e_pps_event_handler(struct mlx5e_priv *priv,
+ struct ptp_clock_event *event)
+{
+ struct mlx5e_tstamp *tstamp = &priv->tstamp;
+
+ ptp_clock_event(tstamp->ptp, event);
+}
+
void mlx5e_timestamp_init(struct mlx5e_priv *priv)
{
struct mlx5e_tstamp *tstamp = &priv->tstamp;
tstamp->ptp_info = mlx5e_ptp_clock_info;
snprintf(tstamp->ptp_info.name, 16, "mlx5 ptp");
+ /* Initialize 1PPS data structures */
+#define MAX_PIN_NUM 8
+ tstamp->pps_pin_caps = kzalloc(sizeof(u8) * MAX_PIN_NUM, GFP_KERNEL);
+ if (tstamp->pps_pin_caps) {
+ if (MLX5_CAP_GEN(priv->mdev, pps))
+ mlx5e_get_pps_caps(priv, tstamp);
+ if (tstamp->ptp_info.n_pins)
+ mlx5e_init_pin_config(tstamp);
+ } else {
+ mlx5_core_warn(priv->mdev, "1PPS initialization failed\n");
+ }
+
tstamp->ptp = ptp_clock_register(&tstamp->ptp_info,
&priv->mdev->pdev->dev);
if (IS_ERR(tstamp->ptp)) {
priv->tstamp.ptp = NULL;
}
+ kfree(tstamp->pps_pin_caps);
+ kfree(tstamp->ptp_info.pin_config);
+
cancel_delayed_work_sync(&tstamp->overflow_work);
}
projects / users / jedix / linux-maple.git / commitdiff