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 void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev,  in mlx4_en_fill_hwtstamps()  argument
68 	read_lock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_fill_hwtstamps()
69 	nsec = timecounter_cyc2time(&mdev->clock, timestamp);  in mlx4_en_fill_hwtstamps()
70 	read_unlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_fill_hwtstamps()
82 void mlx4_en_remove_timestamp(struct mlx4_en_dev *mdev)  in mlx4_en_remove_timestamp()  argument
84 	if (mdev->ptp_clock) {  in mlx4_en_remove_timestamp()
85 		ptp_clock_unregister(mdev->ptp_clock);  in mlx4_en_remove_timestamp()
86 		mdev->ptp_clock = NULL;  in mlx4_en_remove_timestamp()
87 		mlx4_info(mdev, "removed PHC\n");  in mlx4_en_remove_timestamp()
91 void mlx4_en_ptp_overflow_check(struct mlx4_en_dev *mdev)  in mlx4_en_ptp_overflow_check()  argument
93 	bool timeout = time_is_before_jiffies(mdev->last_overflow_check +  in mlx4_en_ptp_overflow_check()
94 					      mdev->overflow_period);  in mlx4_en_ptp_overflow_check()
98 		write_lock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_ptp_overflow_check()
99 		timecounter_read(&mdev->clock);  in mlx4_en_ptp_overflow_check()
100 		write_unlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_ptp_overflow_check()
101 		mdev->last_overflow_check = jiffies;  in mlx4_en_ptp_overflow_check()
119 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_adjfreq()  local
126 	mult = mdev->nominal_c_mult;  in mlx4_en_phc_adjfreq()
131 	write_lock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_adjfreq()
132 	timecounter_read(&mdev->clock);  in mlx4_en_phc_adjfreq()
133 	mdev->cycles.mult = neg_adj ? mult - diff : mult + diff;  in mlx4_en_phc_adjfreq()
134 	write_unlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_adjfreq()
148 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_adjtime()  local
152 	write_lock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_adjtime()
153 	timecounter_adjtime(&mdev->clock, delta);  in mlx4_en_phc_adjtime()
154 	write_unlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_adjtime()
170 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_gettime()  local
175 	write_lock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_gettime()
176 	ns = timecounter_read(&mdev->clock);  in mlx4_en_phc_gettime()
177 	write_unlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_gettime()
195 	struct mlx4_en_dev *mdev = container_of(ptp, struct mlx4_en_dev,  in mlx4_en_phc_settime()  local
201 	write_lock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_phc_settime()
202 	timecounter_init(&mdev->clock, &mdev->cycles, ns);  in mlx4_en_phc_settime()
203 	write_unlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_phc_settime()
257 void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev)  in mlx4_en_init_timestamp()  argument
259 	struct mlx4_dev *dev = mdev->dev;  in mlx4_en_init_timestamp()
267 	if (mdev->ptp_clock)  in mlx4_en_init_timestamp()
270 	rwlock_init(&mdev->clock_lock);  in mlx4_en_init_timestamp()
272 	memset(&mdev->cycles, 0, sizeof(mdev->cycles));  in mlx4_en_init_timestamp()
273 	mdev->cycles.read = mlx4_en_read_clock;  in mlx4_en_init_timestamp()
274 	mdev->cycles.mask = CLOCKSOURCE_MASK(48);  in mlx4_en_init_timestamp()
275 	mdev->cycles.shift = freq_to_shift(dev->caps.hca_core_clock);  in mlx4_en_init_timestamp()
276 	mdev->cycles.mult =  in mlx4_en_init_timestamp()
277 		clocksource_khz2mult(1000 * dev->caps.hca_core_clock, mdev->cycles.shift);  in mlx4_en_init_timestamp()
278 	mdev->nominal_c_mult = mdev->cycles.mult;  in mlx4_en_init_timestamp()
280 	write_lock_irqsave(&mdev->clock_lock, flags);  in mlx4_en_init_timestamp()
281 	timecounter_init(&mdev->clock, &mdev->cycles,  in mlx4_en_init_timestamp()
283 	write_unlock_irqrestore(&mdev->clock_lock, flags);  in mlx4_en_init_timestamp()
288 	ns = cyclecounter_cyc2ns(&mdev->cycles, mdev->cycles.mask, zero, &zero);  in mlx4_en_init_timestamp()
290 	mdev->overflow_period = ns;  in mlx4_en_init_timestamp()
293 	mdev->ptp_clock_info = mlx4_en_ptp_clock_info;  in mlx4_en_init_timestamp()
294 	snprintf(mdev->ptp_clock_info.name, 16, "mlx4 ptp");  in mlx4_en_init_timestamp()
296 	mdev->ptp_clock = ptp_clock_register(&mdev->ptp_clock_info,  in mlx4_en_init_timestamp()
297 					     &mdev->pdev->dev);  in mlx4_en_init_timestamp()
298 	if (IS_ERR(mdev->ptp_clock)) {  in mlx4_en_init_timestamp()
299 		mdev->ptp_clock = NULL;  in mlx4_en_init_timestamp()
300 		mlx4_err(mdev, "ptp_clock_register failed\n");  in mlx4_en_init_timestamp()
302 		mlx4_info(mdev, "registered PHC clock\n");  in mlx4_en_init_timestamp()