43 	struct mlx4_en_dev *mdev =  in mlx4_en_read_clock()  local
45 	struct mlx4_dev *dev = mdev->dev;  in mlx4_en_read_clock()
61 u64 mlx4_en_get_hwtstamp(struct mlx4_en_dev *mdev, u64 timestamp)  in mlx4_en_get_hwtstamp()  argument
67 		seq = read_seqbegin(&mdev->clock_lock);  in mlx4_en_get_hwtstamp()
68 		nsec = timecounter_cyc2time(&mdev->clock, timestamp);  in mlx4_en_get_hwtstamp()
69 	} while (read_seqretry(&mdev->clock_lock, seq));  in mlx4_en_get_hwtstamp()
74 void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev,  in mlx4_en_fill_hwtstamps()  argument
79 	hwts->hwtstamp = mlx4_en_get_hwtstamp(mdev, timestamp);  in mlx4_en_fill_hwtstamps()
88 void mlx4_en_remove_timestamp(struct mlx4_en_dev *mdev)  in mlx4_en_remove_timestamp()  argument
90 	if (mdev->ptp_clock) {  in mlx4_en_remove_timestamp()
91 		ptp_clock_unregister(mdev->ptp_clock);  in mlx4_en_remove_timestamp()
92 		mdev->ptp_clock = NULL;  in mlx4_en_remove_timestamp()
93 		mlx4_info(mdev, "removed PHC\n");  in mlx4_en_remove_timestamp()
104 void mlx4_en_ptp_overflow_check(struct mlx4_en_dev *mdev)  in mlx4_en_ptp_overflow_check()  argument
106 	bool timeout = time_is_before_jiffies(mdev->last_overflow_check +  in mlx4_en_ptp_overflow_check()
111 		write_seqlock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_ptp_overflow_check()
112 		timecounter_read(&mdev->clock);  in mlx4_en_ptp_overflow_check()
113 		write_sequnlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_ptp_overflow_check()
114 		mdev->last_overflow_check = jiffies;  in mlx4_en_ptp_overflow_check()
132 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_adjfine()  local
135 	mult = (u32)adjust_by_scaled_ppm(mdev->nominal_c_mult, scaled_ppm);  in mlx4_en_phc_adjfine()
137 	write_seqlock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_adjfine()
138 	timecounter_read(&mdev->clock);  in mlx4_en_phc_adjfine()
139 	mdev->cycles.mult = mult;  in mlx4_en_phc_adjfine()
140 	write_sequnlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_adjfine()
154 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_adjtime()  local
158 	write_seqlock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_adjtime()
159 	timecounter_adjtime(&mdev->clock, delta);  in mlx4_en_phc_adjtime()
160 	write_sequnlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_adjtime()
176 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_gettime()  local
181 	write_seqlock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_gettime()
182 	ns = timecounter_read(&mdev->clock);  in mlx4_en_phc_gettime()
183 	write_sequnlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_gettime()
201 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_settime()  local
207 	write_seqlock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_settime()
208 	timecounter_init(&mdev->clock, &mdev->cycles, ns);  in mlx4_en_phc_settime()
209 	write_sequnlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_settime()
261 void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)  in mlx4_en_init_timestamp()  argument
263 	struct mlx4_dev *dev = mdev->dev;  in mlx4_en_init_timestamp()
270 	if (mdev->ptp_clock)  in mlx4_en_init_timestamp()
273 	seqlock_init(&mdev->clock_lock);  in mlx4_en_init_timestamp()
275 	memset(&mdev->cycles, 0, sizeof(mdev->cycles));  in mlx4_en_init_timestamp()
276 	mdev->cycles.read = mlx4_en_read_clock;  in mlx4_en_init_timestamp()
277 	mdev->cycles.mask = CLOCKSOURCE_MASK(48);  in mlx4_en_init_timestamp()
278 	mdev->cycles.shift = freq_to_shift(dev->caps.hca_core_clock);  in mlx4_en_init_timestamp()
279 	mdev->cycles.mult =  in mlx4_en_init_timestamp()
280 		clocksource_khz2mult(1000 * dev->caps.hca_core_clock, mdev->cycles.shift);  in mlx4_en_init_timestamp()
281 	mdev->nominal_c_mult = mdev->cycles.mult;  in mlx4_en_init_timestamp()
283 	write_seqlock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_init_timestamp()
284 	timecounter_init(&mdev->clock, &mdev->cycles,  in mlx4_en_init_timestamp()
286 	write_sequnlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_init_timestamp()
289 	mdev->ptp_clock_info = mlx4_en_ptp_clock_info;  in mlx4_en_init_timestamp()
290 	snprintf(mdev->ptp_clock_info.name, 16, "mlx4 ptp");  in mlx4_en_init_timestamp()
292 	mdev->ptp_clock = ptp_clock_register(&mdev->ptp_clock_info,  in mlx4_en_init_timestamp()
293 					     &mdev->pdev->dev);  in mlx4_en_init_timestamp()
294 	if (IS_ERR(mdev->ptp_clock)) {  in mlx4_en_init_timestamp()
295 		mdev->ptp_clock = NULL;  in mlx4_en_init_timestamp()
296 		mlx4_err(mdev, "ptp_clock_register failed\n");  in mlx4_en_init_timestamp()
297 	} else if (mdev->ptp_clock) {  in mlx4_en_init_timestamp()
298 		mlx4_info(mdev, "registered PHC clock\n");  in mlx4_en_init_timestamp()