1 // SPDX-License-Identifier: GPL-2.0-only
46 	/* For GMAC3.x, 4.x versions, in "fine adjustement mode" set sub-second  in config_sub_second_increment()
49 	 * to mid-range = 2^31 when the remainder of this division is zero,  in config_sub_second_increment()
78 	void __iomem *ioaddr = priv->ptpaddr;  in hwtstamp_correct_latency()
84 	/* MAC-internal ingress latency */  in hwtstamp_correct_latency()
93 		scaled_ns = ((u64)NSEC_PER_SEC << 16) - scaled_ns;  in hwtstamp_correct_latency()
96 		scaled_ns = ((1ULL << 31) << 16) -  in hwtstamp_correct_latency()
108 	/* MAC-internal egress latency */  in hwtstamp_correct_latency()
148 	while (limit--) {  in config_addend()
154 		return -EBUSY;  in config_addend()
171 			sec = -sec;  in adjust_systime()
175 			nsec = (PTP_DIGITAL_ROLLOVER_MODE - nsec);  in adjust_systime()
177 			nsec = (PTP_BINARY_ROLLOVER_MODE - nsec);  in adjust_systime()
191 	while (limit--) {  in adjust_systime()
197 		return -EBUSY;  in adjust_systime()
234 	u32 acr_value, channel;  in timestamp_interrupt()  local
239 	if (priv->plat->flags & STMMAC_FLAG_INT_SNAPSHOT_EN) {  in timestamp_interrupt()
240 		wake_up(&priv->tstamp_busy_wait);  in timestamp_interrupt()
244 	tsync_int = readl(priv->ioaddr + GMAC_INT_STATUS) & GMAC_INT_TSIE;  in timestamp_interrupt()
250 	 * timestamp or start/end of PPS.  in timestamp_interrupt()
252 	ts_status = readl(priv->ioaddr + GMAC_TIMESTAMP_STATUS);  in timestamp_interrupt()
254 	if (!(priv->plat->flags & STMMAC_FLAG_EXT_SNAPSHOT_EN))  in timestamp_interrupt()
260 	acr_value = readl(priv->ptpaddr + PTP_ACR);  in timestamp_interrupt()
261 	channel = ilog2(FIELD_GET(PTP_ACR_MASK, acr_value));  in timestamp_interrupt()
264 		read_lock_irqsave(&priv->ptp_lock, flags);  in timestamp_interrupt()
265 		get_ptptime(priv->ptpaddr, &ptp_time);  in timestamp_interrupt()
266 		read_unlock_irqrestore(&priv->ptp_lock, flags);  in timestamp_interrupt()
268 		event.index = channel;  in timestamp_interrupt()
270 		ptp_clock_event(priv->ptp_clock, &event);  in timestamp_interrupt()