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net/mlx5: Clock, Use async events chain 

Remove the explicit call to mlx5_pps_event on MLX5_EVENT_TYPE_PPS_EVENT
and let clock logic to register its own handler when its ready.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Saeed Mahameed 2018-11-20 14:12:21 -08:00
parent a52a7d01fd
commit 41069256e9
4 changed files with 20 additions and 15 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/eq.c
View File

@ -417,10 +417,6 @@ static irqreturn_t mlx5_eq_async_int(int irq, void *eq_ptr)
mlx5_port_module_event(dev, eqe);
break;
case MLX5_EVENT_TYPE_PPS_EVENT:
mlx5_pps_event(dev, eqe);
break;
case MLX5_EVENT_TYPE_TEMP_WARN_EVENT:
mlx5_temp_warning_event(dev, eqe);
break;

24
drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c
View File

@ -33,6 +33,7 @@
#include <linux/clocksource.h>
#include <linux/highmem.h>
#include <rdma/mlx5-abi.h>
#include "lib/eq.h"
#include "en.h"
#include "clock.h"
@ -439,16 +440,17 @@ static void mlx5_get_pps_caps(struct mlx5_core_dev *mdev)
clock->pps_info.pin_caps[7] = MLX5_GET(mtpps_reg, out, cap_pin_7_mode);
}
void mlx5_pps_event(struct mlx5_core_dev *mdev,
struct mlx5_eqe *eqe)
static int mlx5_pps_event(struct notifier_block *nb,
unsigned long type, void *data)
{
struct mlx5_clock *clock = &mdev->clock;
struct mlx5_clock *clock = mlx5_nb_cof(nb, struct mlx5_clock, pps_nb);
struct mlx5_core_dev *mdev = clock->mdev;
struct ptp_clock_event ptp_event;
struct timespec64 ts;
u64 nsec_now, nsec_delta;
u64 cycles_now, cycles_delta;
u64 nsec_now, nsec_delta, ns;
struct mlx5_eqe *eqe = data;
int pin = eqe->data.pps.pin;
s64 ns;
struct timespec64 ts;
unsigned long flags;
switch (clock->ptp_info.pin_config[pin].func) {
@ -463,6 +465,7 @@ void mlx5_pps_event(struct mlx5_core_dev *mdev,
} else {
ptp_event.type = PTP_CLOCK_EXTTS;
}
/* TODOL clock->ptp can be NULL if ptp_clock_register failes */
ptp_clock_event(clock->ptp, &ptp_event);
break;
case PTP_PF_PEROUT:
@ -481,8 +484,11 @@ void mlx5_pps_event(struct mlx5_core_dev *mdev,
write_sequnlock_irqrestore(&clock->lock, flags);
break;
default:
mlx5_core_err(mdev, " Unhandled event\n");
mlx5_core_err(mdev, " Unhandled clock PPS event, func %d\n",
clock->ptp_info.pin_config[pin].func);
}
return NOTIFY_OK;
}
void mlx5_init_clock(struct mlx5_core_dev *mdev)
@ -567,6 +573,9 @@ void mlx5_init_clock(struct mlx5_core_dev *mdev)
PTR_ERR(clock->ptp));
clock->ptp = NULL;
}
MLX5_NB_INIT(&clock->pps_nb, mlx5_pps_event, PPS_EVENT);
mlx5_eq_notifier_register(mdev, &clock->pps_nb);
}
void mlx5_cleanup_clock(struct mlx5_core_dev *mdev)
@ -576,6 +585,7 @@ void mlx5_cleanup_clock(struct mlx5_core_dev *mdev)
if (!MLX5_CAP_GEN(mdev, device_frequency_khz))
return;
mlx5_eq_notifier_unregister(mdev, &clock->pps_nb);
if (clock->ptp) {
ptp_clock_unregister(clock->ptp);
clock->ptp = NULL;

3
drivers/net/ethernet/mellanox/mlx5/core/lib/clock.h
View File

@ -36,7 +36,6 @@
#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);
void mlx5_pps_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe);
static inline int mlx5_clock_get_ptp_index(struct mlx5_core_dev *mdev)
{
@ -60,8 +59,6 @@ static inline ktime_t mlx5_timecounter_cyc2time(struct mlx5_clock *clock,
#else
static inline void mlx5_init_clock(struct mlx5_core_dev *mdev) {}
static inline void mlx5_cleanup_clock(struct mlx5_core_dev *mdev) {}
static inline void mlx5_pps_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) {}
static inline int mlx5_clock_get_ptp_index(struct mlx5_core_dev *mdev)
{
return -1;

4
include/linux/mlx5/driver.h
View File

@ -50,6 +50,7 @@
#include <linux/mlx5/device.h>
#include <linux/mlx5/doorbell.h>
#include <linux/mlx5/srq.h>
#include <linux/mlx5/eq.h>
#include <linux/timecounter.h>
#include <linux/ptp_clock_kernel.h>
@ -671,6 +672,8 @@ struct mlx5_pps {
};
struct mlx5_clock {
struct mlx5_core_dev *mdev;
struct mlx5_nb pps_nb;
seqlock_t lock;
struct cyclecounter cycles;
struct timecounter tc;
@ -678,7 +681,6 @@ struct mlx5_clock {
u32 nominal_c_mult;
unsigned long overflow_period;
struct delayed_work overflow_work;
struct mlx5_core_dev *mdev;
struct ptp_clock *ptp;
struct ptp_clock_info ptp_info;
struct mlx5_pps pps_info;