1 // SPDX-License-Identifier: GPL-2.0
22 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_read()
29 	ts->tv_sec = sec;  in igc_ptp_read()
30 	ts->tv_nsec = nsec;  in igc_ptp_read()
36 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_write_i225()
38 	wr32(IGC_SYSTIML, ts->tv_nsec);  in igc_ptp_write_i225()
39 	wr32(IGC_SYSTIMH, ts->tv_sec);  in igc_ptp_write_i225()
46 	struct igc_hw *hw = &igc->hw;  in igc_ptp_adjfine_i225()
53 		scaled_ppm = -scaled_ppm;  in igc_ptp_adjfine_i225()
75 	spin_lock_irqsave(&igc->tmreg_lock, flags);  in igc_ptp_adjtime_i225()
81 	spin_unlock_irqrestore(&igc->tmreg_lock, flags);  in igc_ptp_adjtime_i225()
92 	struct igc_hw *hw = &igc->hw;  in igc_ptp_gettimex64_i225()
95 	spin_lock_irqsave(&igc->tmreg_lock, flags);  in igc_ptp_gettimex64_i225()
98 	ts->tv_nsec = rd32(IGC_SYSTIML);  in igc_ptp_gettimex64_i225()
99 	ts->tv_sec = rd32(IGC_SYSTIMH);  in igc_ptp_gettimex64_i225()
102 	spin_unlock_irqrestore(&igc->tmreg_lock, flags);  in igc_ptp_gettimex64_i225()
114 	spin_lock_irqsave(&igc->tmreg_lock, flags);  in igc_ptp_settime_i225()
118 	spin_unlock_irqrestore(&igc->tmreg_lock, flags);  in igc_ptp_settime_i225()
126 	return -EOPNOTSUPP;  in igc_ptp_feature_enable_i225()
130  * igc_ptp_systim_to_hwtstamp - convert system time value to HW timestamp
142 	switch (adapter->hw.mac.type) {  in igc_ptp_systim_to_hwtstamp()
146 		hwtstamps->hwtstamp = ktime_set(systim >> 32,  in igc_ptp_systim_to_hwtstamp()
155  * igc_ptp_rx_pktstamp - retrieve Rx per packet timestamp
168 	struct igc_adapter *adapter = q_vector->adapter;  in igc_ptp_rx_pktstamp()
180 	if (adapter->hw.mac.type == igc_i225) {  in igc_ptp_rx_pktstamp()
181 		switch (adapter->link_speed) {  in igc_ptp_rx_pktstamp()
196 	skb_hwtstamps(skb)->hwtstamp =  in igc_ptp_rx_pktstamp()
197 		ktime_sub_ns(skb_hwtstamps(skb)->hwtstamp, adjust);  in igc_ptp_rx_pktstamp()
202 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_disable_rx_timestamp()
208 	for (i = 0; i < adapter->num_rx_queues; i++) {  in igc_ptp_disable_rx_timestamp()
221 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_enable_rx_timestamp()
229 	for (i = 0; i < adapter->num_rx_queues; i++) {  in igc_ptp_enable_rx_timestamp()
246 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_disable_tx_timestamp()
253 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_enable_tx_timestamp()
263  * igc_ptp_set_timestamp_mode - setup hardware for timestamping
265  * @config: hwtstamp configuration
270 				      struct hwtstamp_config *config)  in igc_ptp_set_timestamp_mode()  argument
273 	if (config->flags)  in igc_ptp_set_timestamp_mode()
274 		return -EINVAL;  in igc_ptp_set_timestamp_mode()
276 	switch (config->tx_type) {  in igc_ptp_set_timestamp_mode()
284 		return -ERANGE;  in igc_ptp_set_timestamp_mode()
287 	switch (config->rx_filter) {  in igc_ptp_set_timestamp_mode()
306 		config->rx_filter = HWTSTAMP_FILTER_ALL;  in igc_ptp_set_timestamp_mode()
309 		return -ERANGE;  in igc_ptp_set_timestamp_mode()
317 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_tx_timeout()
319 	dev_kfree_skb_any(adapter->ptp_tx_skb);  in igc_ptp_tx_timeout()
320 	adapter->ptp_tx_skb = NULL;  in igc_ptp_tx_timeout()
321 	adapter->tx_hwtstamp_timeouts++;  in igc_ptp_tx_timeout()
322 	clear_bit_unlock(__IGC_PTP_TX_IN_PROGRESS, &adapter->state);  in igc_ptp_tx_timeout()
325 	netdev_warn(adapter->netdev, "Tx timestamp timeout\n");  in igc_ptp_tx_timeout()
330 	bool timeout = time_is_before_jiffies(adapter->ptp_tx_start +  in igc_ptp_tx_hang()
333 	if (!test_bit(__IGC_PTP_TX_IN_PROGRESS, &adapter->state))  in igc_ptp_tx_hang()
341 		cancel_work_sync(&adapter->ptp_tx_work);  in igc_ptp_tx_hang()
347  * igc_ptp_tx_hwtstamp - utility function which checks for TX time stamp
356 	struct sk_buff *skb = adapter->ptp_tx_skb;  in igc_ptp_tx_hwtstamp()
358 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_tx_hwtstamp()
369 	switch (adapter->link_speed) {  in igc_ptp_tx_hwtstamp()
390 	 * while we're notifying the stack.  in igc_ptp_tx_hwtstamp()
392 	adapter->ptp_tx_skb = NULL;  in igc_ptp_tx_hwtstamp()
393 	clear_bit_unlock(__IGC_PTP_TX_IN_PROGRESS, &adapter->state);  in igc_ptp_tx_hwtstamp()
411 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_tx_work()
414 	if (!test_bit(__IGC_PTP_TX_IN_PROGRESS, &adapter->state))  in igc_ptp_tx_work()
425  * igc_ptp_set_ts_config - set hardware time stamping config
433 	struct hwtstamp_config config;  in igc_ptp_set_ts_config()  local
436 	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))  in igc_ptp_set_ts_config()
437 		return -EFAULT;  in igc_ptp_set_ts_config()
439 	err = igc_ptp_set_timestamp_mode(adapter, &config);  in igc_ptp_set_ts_config()
444 	memcpy(&adapter->tstamp_config, &config,  in igc_ptp_set_ts_config()
445 	       sizeof(adapter->tstamp_config));  in igc_ptp_set_ts_config()
447 	return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?  in igc_ptp_set_ts_config()
448 		-EFAULT : 0;  in igc_ptp_set_ts_config()
452  * igc_ptp_get_ts_config - get hardware time stamping config
463 	struct hwtstamp_config *config = &adapter->tstamp_config;  in igc_ptp_get_ts_config()  local
465 	return copy_to_user(ifr->ifr_data, config, sizeof(*config)) ?  in igc_ptp_get_ts_config()
466 		-EFAULT : 0;  in igc_ptp_get_ts_config()
470  * igc_ptp_init - Initialize PTP functionality
478 	struct net_device *netdev = adapter->netdev;  in igc_ptp_init()
479 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_init()
481 	switch (hw->mac.type) {  in igc_ptp_init()
483 		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);  in igc_ptp_init()
484 		adapter->ptp_caps.owner = THIS_MODULE;  in igc_ptp_init()
485 		adapter->ptp_caps.max_adj = 62499999;  in igc_ptp_init()
486 		adapter->ptp_caps.adjfine = igc_ptp_adjfine_i225;  in igc_ptp_init()
487 		adapter->ptp_caps.adjtime = igc_ptp_adjtime_i225;  in igc_ptp_init()
488 		adapter->ptp_caps.gettimex64 = igc_ptp_gettimex64_i225;  in igc_ptp_init()
489 		adapter->ptp_caps.settime64 = igc_ptp_settime_i225;  in igc_ptp_init()
490 		adapter->ptp_caps.enable = igc_ptp_feature_enable_i225;  in igc_ptp_init()
493 		adapter->ptp_clock = NULL;  in igc_ptp_init()
497 	spin_lock_init(&adapter->tmreg_lock);  in igc_ptp_init()
498 	INIT_WORK(&adapter->ptp_tx_work, igc_ptp_tx_work);  in igc_ptp_init()
500 	adapter->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;  in igc_ptp_init()
501 	adapter->tstamp_config.tx_type = HWTSTAMP_TX_OFF;  in igc_ptp_init()
503 	adapter->prev_ptp_time = ktime_to_timespec64(ktime_get_real());  in igc_ptp_init()
504 	adapter->ptp_reset_start = ktime_get();  in igc_ptp_init()
506 	adapter->ptp_clock = ptp_clock_register(&adapter->ptp_caps,  in igc_ptp_init()
507 						&adapter->pdev->dev);  in igc_ptp_init()
508 	if (IS_ERR(adapter->ptp_clock)) {  in igc_ptp_init()
509 		adapter->ptp_clock = NULL;  in igc_ptp_init()
511 	} else if (adapter->ptp_clock) {  in igc_ptp_init()
513 		adapter->ptp_flags |= IGC_PTP_ENABLED;  in igc_ptp_init()
519 	igc_ptp_read(adapter, &adapter->prev_ptp_time);  in igc_ptp_time_save()
520 	adapter->ptp_reset_start = ktime_get();  in igc_ptp_time_save()
525 	struct timespec64 ts = adapter->prev_ptp_time;  in igc_ptp_time_restore()
528 	delta = ktime_sub(ktime_get(), adapter->ptp_reset_start);  in igc_ptp_time_restore()
536  * igc_ptp_suspend - Disable PTP work items and prepare for suspend
544 	if (!(adapter->ptp_flags & IGC_PTP_ENABLED))  in igc_ptp_suspend()
547 	cancel_work_sync(&adapter->ptp_tx_work);  in igc_ptp_suspend()
548 	dev_kfree_skb_any(adapter->ptp_tx_skb);  in igc_ptp_suspend()
549 	adapter->ptp_tx_skb = NULL;  in igc_ptp_suspend()
550 	clear_bit_unlock(__IGC_PTP_TX_IN_PROGRESS, &adapter->state);  in igc_ptp_suspend()
556  * igc_ptp_stop - Disable PTP device and stop the overflow check.
565 	if (adapter->ptp_clock) {  in igc_ptp_stop()
566 		ptp_clock_unregister(adapter->ptp_clock);  in igc_ptp_stop()
567 		netdev_info(adapter->netdev, "PHC removed\n");  in igc_ptp_stop()
568 		adapter->ptp_flags &= ~IGC_PTP_ENABLED;  in igc_ptp_stop()
573  * igc_ptp_reset - Re-enable the adapter for PTP following a reset.
576  * This function handles the reset work required to re-enable the PTP device.
580 	struct igc_hw *hw = &adapter->hw;  in igc_ptp_reset()
584 	igc_ptp_set_timestamp_mode(adapter, &adapter->tstamp_config);  in igc_ptp_reset()
586 	spin_lock_irqsave(&adapter->tmreg_lock, flags);  in igc_ptp_reset()
588 	switch (adapter->hw.mac.type) {  in igc_ptp_reset()
600 	/* Re-initialize the timer. */  in igc_ptp_reset()
601 	if (hw->mac.type == igc_i225) {  in igc_ptp_reset()
604 		timecounter_init(&adapter->tc, &adapter->cc,  in igc_ptp_reset()
608 	spin_unlock_irqrestore(&adapter->tmreg_lock, flags);  in igc_ptp_reset()