Merge branch 'lan966x-ptp'

Horatiu Vultur says:

====================
net: lan966x: Add PTP Hardward Clock support

Add support for PTP Hardware Clock (PHC) for lan966x. The switch supports
both PTP 1-step and 2-step modes.

v1->v2:
- fix commit messages
- reduce the scope of the lock ptp_lock inside the function
  lan966x_ptp_hwtstamp_set
- the rx timestamping is always enabled for all packages
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml

@@ -38,6 +38,7 @@ properties:
       - description: register based extraction
       - description: frame dma based extraction
       - description: analyzer interrupt
+      - description: ptp interrupt
 
   interrupt-names:
     minItems: 1
@@ -45,6 +46,7 @@ properties:
       - const: xtr
       - const: fdma
       - const: ana
+      - const: ptp
 
   resets:
     items:

drivers/net/ethernet/microchip/lan966x/Makefile

@@ -7,4 +7,5 @@ obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
 
 lan966x-switch-objs  := lan966x_main.o lan966x_phylink.o lan966x_port.o \
 			lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o \
-			lan966x_vlan.o lan966x_fdb.o lan966x_mdb.o
+			lan966x_vlan.o lan966x_fdb.o lan966x_mdb.o \
+			lan966x_ptp.o

drivers/net/ethernet/microchip/lan966x/lan966x_ethtool.c

@@ -545,6 +545,39 @@ static int lan966x_set_pauseparam(struct net_device *dev,
 	return phylink_ethtool_set_pauseparam(port->phylink, pause);
 }
 
+static int lan966x_get_ts_info(struct net_device *dev,
+			       struct ethtool_ts_info *info)
+{
+	struct lan966x_port *port = netdev_priv(dev);
+	struct lan966x *lan966x = port->lan966x;
+	struct lan966x_phc *phc;
+
+	if (!lan966x->ptp)
+		return ethtool_op_get_ts_info(dev, info);
+
+	phc = &lan966x->phc[LAN966X_PHC_PORT];
+
+	info->phc_index = phc->clock ? ptp_clock_index(phc->clock) : -1;
+	if (info->phc_index == -1) {
+		info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
+					 SOF_TIMESTAMPING_RX_SOFTWARE |
+					 SOF_TIMESTAMPING_SOFTWARE;
+		return 0;
+	}
+	info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
+				 SOF_TIMESTAMPING_RX_SOFTWARE |
+				 SOF_TIMESTAMPING_SOFTWARE |
+				 SOF_TIMESTAMPING_TX_HARDWARE |
+				 SOF_TIMESTAMPING_RX_HARDWARE |
+				 SOF_TIMESTAMPING_RAW_HARDWARE;
+	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON) |
+			 BIT(HWTSTAMP_TX_ONESTEP_SYNC);
+	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
+			   BIT(HWTSTAMP_FILTER_ALL);
+
+	return 0;
+}
+
 const struct ethtool_ops lan966x_ethtool_ops = {
 	.get_link_ksettings     = lan966x_get_link_ksettings,
 	.set_link_ksettings     = lan966x_set_link_ksettings,
@@ -556,6 +589,7 @@ const struct ethtool_ops lan966x_ethtool_ops = {
 	.get_eth_mac_stats      = lan966x_get_eth_mac_stats,
 	.get_rmon_stats		= lan966x_get_eth_rmon_stats,
 	.get_link		= ethtool_op_get_link,
+	.get_ts_info		= lan966x_get_ts_info,
 };
 
 static void lan966x_check_stats_work(struct work_struct *work)

drivers/net/ethernet/microchip/lan966x/lan966x_main.c

@@ -44,6 +44,7 @@ static const struct lan966x_main_io_resource lan966x_main_iomap[] =  {
 	{ TARGET_ORG,                         0, 1 }, /* 0xe2000000 */
 	{ TARGET_GCB,                    0x4000, 1 }, /* 0xe2004000 */
 	{ TARGET_QS,                     0x8000, 1 }, /* 0xe2008000 */
+	{ TARGET_PTP,                    0xc000, 1 }, /* 0xe200c000 */
 	{ TARGET_CHIP_TOP,              0x10000, 1 }, /* 0xe2010000 */
 	{ TARGET_REW,                   0x14000, 1 }, /* 0xe2014000 */
 	{ TARGET_SYS,                   0x28000, 1 }, /* 0xe2028000 */
@@ -201,7 +202,7 @@ static int lan966x_port_ifh_xmit(struct sk_buff *skb,
 	val = lan_rd(lan966x, QS_INJ_STATUS);
 	if (!(QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp)) ||
 	    (QS_INJ_STATUS_WMARK_REACHED_GET(val) & BIT(grp)))
-		return NETDEV_TX_BUSY;
+		goto err;
 
 	/* Write start of frame */
 	lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
@@ -213,7 +214,7 @@ static int lan966x_port_ifh_xmit(struct sk_buff *skb,
 		/* Wait until the fifo is ready */
 		err = lan966x_port_inj_ready(lan966x, grp);
 		if (err)
-			return NETDEV_TX_BUSY;
+			goto err;
 
 		lan_wr((__force u32)ifh[i], lan966x, QS_INJ_WR(grp));
 	}
@@ -225,7 +226,7 @@ static int lan966x_port_ifh_xmit(struct sk_buff *skb,
 		/* Wait until the fifo is ready */
 		err = lan966x_port_inj_ready(lan966x, grp);
 		if (err)
-			return NETDEV_TX_BUSY;
+			goto err;
 
 		lan_wr(((u32 *)skb->data)[i], lan966x, QS_INJ_WR(grp));
 	}
@@ -235,7 +236,7 @@ static int lan966x_port_ifh_xmit(struct sk_buff *skb,
 		/* Wait until the fifo is ready */
 		err = lan966x_port_inj_ready(lan966x, grp);
 		if (err)
-			return NETDEV_TX_BUSY;
+			goto err;
 
 		lan_wr(0, lan966x, QS_INJ_WR(grp));
 		++i;
@@ -255,8 +256,19 @@ static int lan966x_port_ifh_xmit(struct sk_buff *skb,
 	dev->stats.tx_packets++;
 	dev->stats.tx_bytes += skb->len;
 
+	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
+	    LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
+		return NETDEV_TX_OK;
+
 	dev_consume_skb_any(skb);
 	return NETDEV_TX_OK;
+
+err:
+	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
+	    LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
+		lan966x_ptp_txtstamp_release(port, skb);
+
+	return NETDEV_TX_BUSY;
 }
 
 static void lan966x_ifh_set_bypass(void *ifh, u64 bypass)
@@ -289,10 +301,23 @@ static void lan966x_ifh_set_vid(void *ifh, u64 vid)
 		IFH_POS_TCI, IFH_LEN * 4, PACK, 0);
 }
 
+static void lan966x_ifh_set_rew_op(void *ifh, u64 rew_op)
+{
+	packing(ifh, &rew_op, IFH_POS_REW_CMD + IFH_WID_REW_CMD - 1,
+		IFH_POS_REW_CMD, IFH_LEN * 4, PACK, 0);
+}
+
+static void lan966x_ifh_set_timestamp(void *ifh, u64 timestamp)
+{
+	packing(ifh, &timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1,
+		IFH_POS_TIMESTAMP, IFH_LEN * 4, PACK, 0);
+}
+
 static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct lan966x_port *port = netdev_priv(dev);
 	__be32 ifh[IFH_LEN];
+	int err;
 
 	memset(ifh, 0x0, sizeof(__be32) * IFH_LEN);
 
@@ -302,6 +327,15 @@ static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev)
 	lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
 	lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
 
+	if (port->lan966x->ptp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
+		err = lan966x_ptp_txtstamp_request(port, skb);
+		if (err)
+			return err;
+
+		lan966x_ifh_set_rew_op(ifh, LAN966X_SKB_CB(skb)->rew_op);
+		lan966x_ifh_set_timestamp(ifh, LAN966X_SKB_CB(skb)->ts_id);
+	}
+
 	return lan966x_port_ifh_xmit(skb, ifh, dev);
 }
 
@@ -350,6 +384,23 @@ static int lan966x_port_get_parent_id(struct net_device *dev,
 	return 0;
 }
 
+static int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr,
+			      int cmd)
+{
+	struct lan966x_port *port = netdev_priv(dev);
+
+	if (!phy_has_hwtstamp(dev->phydev) && port->lan966x->ptp) {
+		switch (cmd) {
+		case SIOCSHWTSTAMP:
+			return lan966x_ptp_hwtstamp_set(port, ifr);
+		case SIOCGHWTSTAMP:
+			return lan966x_ptp_hwtstamp_get(port, ifr);
+		}
+	}
+
+	return phy_mii_ioctl(dev->phydev, ifr, cmd);
+}
+
 static const struct net_device_ops lan966x_port_netdev_ops = {
 	.ndo_open			= lan966x_port_open,
 	.ndo_stop			= lan966x_port_stop,
@@ -360,6 +411,7 @@ static const struct net_device_ops lan966x_port_netdev_ops = {
 	.ndo_get_stats64		= lan966x_stats_get,
 	.ndo_set_mac_address		= lan966x_port_set_mac_address,
 	.ndo_get_port_parent_id		= lan966x_port_get_parent_id,
+	.ndo_eth_ioctl			= lan966x_port_ioctl,
 };
 
 bool lan966x_netdevice_check(const struct net_device *dev)
@@ -434,6 +486,12 @@ static void lan966x_ifh_get_len(void *ifh, u64 *len)
 		IFH_POS_LEN, IFH_LEN * 4, UNPACK, 0);
 }
 
+static void lan966x_ifh_get_timestamp(void *ifh, u64 *timestamp)
+{
+	packing(ifh, timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1,
+		IFH_POS_TIMESTAMP, IFH_LEN * 4, UNPACK, 0);
+}
+
 static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
 {
 	struct lan966x *lan966x = args;
@@ -443,10 +501,10 @@ static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
 		return IRQ_NONE;
 
 	do {
+		u64 src_port, len, timestamp;
 		struct net_device *dev;
 		struct sk_buff *skb;
 		int sz = 0, buf_len;
-		u64 src_port, len;
 		u32 ifh[IFH_LEN];
 		u32 *buf;
 		u32 val;
@@ -461,6 +519,7 @@ static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
 
 		lan966x_ifh_get_src_port(ifh, &src_port);
 		lan966x_ifh_get_len(ifh, &len);
+		lan966x_ifh_get_timestamp(ifh, &timestamp);
 
 		WARN_ON(src_port >= lan966x->num_phys_ports);
 
@@ -501,6 +560,7 @@ static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
 			*buf = val;
 		}
 
+		lan966x_ptp_rxtstamp(lan966x, skb, timestamp);
 		skb->protocol = eth_type_trans(skb, dev);
 
 		if (lan966x->bridge_mask & BIT(src_port))
@@ -897,6 +957,17 @@ static int lan966x_probe(struct platform_device *pdev)
 			return dev_err_probe(&pdev->dev, err, "Unable to use ana irq");
 	}
 
+	lan966x->ptp_irq = platform_get_irq_byname(pdev, "ptp");
+	if (lan966x->ptp_irq > 0) {
+		err = devm_request_threaded_irq(&pdev->dev, lan966x->ptp_irq, NULL,
+						lan966x_ptp_irq_handler, IRQF_ONESHOT,
+						"ptp irq", lan966x);
+		if (err)
+			return dev_err_probe(&pdev->dev, err, "Unable to use ptp irq");
+
+		lan966x->ptp = 1;
+	}
+
 	/* init switch */
 	lan966x_init(lan966x);
 	lan966x_stats_init(lan966x);
@@ -931,8 +1002,15 @@ static int lan966x_probe(struct platform_device *pdev)
 	if (err)
 		goto cleanup_ports;
 
+	err = lan966x_ptp_init(lan966x);
+	if (err)
+		goto cleanup_fdb;
+
 	return 0;
 
+cleanup_fdb:
+	lan966x_fdb_deinit(lan966x);
+
 cleanup_ports:
 	fwnode_handle_put(portnp);
 
@@ -958,6 +1036,7 @@ static int lan966x_remove(struct platform_device *pdev)
 	lan966x_mac_purge_entries(lan966x);
 	lan966x_mdb_deinit(lan966x);
 	lan966x_fdb_deinit(lan966x);
+	lan966x_ptp_deinit(lan966x);
 
 	return 0;
 }

drivers/net/ethernet/microchip/lan966x/lan966x_main.h

@@ -8,6 +8,7 @@
 #include <linux/jiffies.h>
 #include <linux/phy.h>
 #include <linux/phylink.h>
+#include <linux/ptp_clock_kernel.h>
 #include <net/switchdev.h>
 
 #include "lan966x_regs.h"
@@ -50,6 +51,13 @@
 #define LAN966X_SPEED_100		2
 #define LAN966X_SPEED_10		3
 
+#define LAN966X_PHC_COUNT		3
+#define LAN966X_PHC_PORT		0
+
+#define IFH_REW_OP_NOOP			0x0
+#define IFH_REW_OP_ONE_STEP_PTP		0x3
+#define IFH_REW_OP_TWO_STEP_PTP		0x4
+
 /* MAC table entry types.
  * ENTRYTYPE_NORMAL is subject to aging.
  * ENTRYTYPE_LOCKED is not subject to aging.
@@ -70,6 +78,24 @@ struct lan966x_stat_layout {
 	char name[ETH_GSTRING_LEN];
 };
 
+struct lan966x_phc {
+	struct ptp_clock *clock;
+	struct ptp_clock_info info;
+	struct hwtstamp_config hwtstamp_config;
+	struct lan966x *lan966x;
+	u8 index;
+};
+
+struct lan966x_skb_cb {
+	u8 rew_op;
+	u16 ts_id;
+	unsigned long jiffies;
+};
+
+#define LAN966X_PTP_TIMEOUT		msecs_to_jiffies(10)
+#define LAN966X_SKB_CB(skb) \
+	((struct lan966x_skb_cb *)((skb)->cb))
+
 struct lan966x {
 	struct device *dev;
 
@@ -105,6 +131,7 @@ struct lan966x {
 	/* interrupts */
 	int xtr_irq;
 	int ana_irq;
+	int ptp_irq;
 
 	/* worqueue for fdb */
 	struct workqueue_struct *fdb_work;
@@ -113,6 +140,14 @@ struct lan966x {
 	/* mdb */
 	struct list_head mdb_entries;
 	struct list_head pgid_entries;
+
+	/* ptp */
+	bool ptp;
+	struct lan966x_phc phc[LAN966X_PHC_COUNT];
+	spinlock_t ptp_clock_lock; /* lock for phc */
+	spinlock_t ptp_ts_id_lock; /* lock for ts_id */
+	struct mutex ptp_lock; /* lock for ptp interface state */
+	u16 ptp_skbs;
 };
 
 struct lan966x_port_config {
@@ -142,6 +177,10 @@ struct lan966x_port {
 	struct phylink *phylink;
 	struct phy *serdes;
 	struct fwnode_handle *fwnode;
+
+	u8 ptp_cmd;
+	u16 ts_id;
+	struct sk_buff_head tx_skbs;
 };
 
 extern const struct phylink_mac_ops lan966x_phylink_mac_ops;
@@ -228,6 +267,18 @@ int lan966x_handle_port_mdb_del(struct lan966x_port *port,
 void lan966x_mdb_erase_entries(struct lan966x *lan966x, u16 vid);
 void lan966x_mdb_write_entries(struct lan966x *lan966x, u16 vid);
 
+int lan966x_ptp_init(struct lan966x *lan966x);
+void lan966x_ptp_deinit(struct lan966x *lan966x);
+int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr);
+int lan966x_ptp_hwtstamp_get(struct lan966x_port *port, struct ifreq *ifr);
+void lan966x_ptp_rxtstamp(struct lan966x *lan966x, struct sk_buff *skb,
+			  u64 timestamp);
+int lan966x_ptp_txtstamp_request(struct lan966x_port *port,
+				 struct sk_buff *skb);
+void lan966x_ptp_txtstamp_release(struct lan966x_port *port,
+				  struct sk_buff *skb);
+irqreturn_t lan966x_ptp_irq_handler(int irq, void *args);
+
 static inline void __iomem *lan_addr(void __iomem *base[],
 				     int id, int tinst, int tcnt,
 				     int gbase, int ginst,

drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c

+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/ptp_classify.h>
+
+#include "lan966x_main.h"
+
+#define LAN966X_MAX_PTP_ID	512
+
+/* Represents 1ppm adjustment in 2^59 format with 6.037735849ns as reference
+ * The value is calculated as following: (1/1000000)/((2^-59)/6.037735849)
+ */
+#define LAN966X_1PPM_FORMAT		3480517749723LL
+
+/* Represents 1ppb adjustment in 2^29 format with 6.037735849ns as reference
+ * The value is calculated as following: (1/1000000000)/((2^59)/6.037735849)
+ */
+#define LAN966X_1PPB_FORMAT		3480517749LL
+
+#define TOD_ACC_PIN		0x5
+
+enum {
+	PTP_PIN_ACTION_IDLE = 0,
+	PTP_PIN_ACTION_LOAD,
+	PTP_PIN_ACTION_SAVE,
+	PTP_PIN_ACTION_CLOCK,
+	PTP_PIN_ACTION_DELTA,
+	PTP_PIN_ACTION_TOD
+};
+
+static u64 lan966x_ptp_get_nominal_value(void)
+{
+	u64 res = 0x304d2df1;
+
+	res <<= 32;
+	return res;
+}
+
+int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr)
+{
+	struct lan966x *lan966x = port->lan966x;
+	struct hwtstamp_config cfg;
+	struct lan966x_phc *phc;
+
+	/* For now don't allow to run ptp on ports that are part of a bridge,
+	 * because in case of transparent clock the HW will still forward the
+	 * frames, so there would be duplicate frames
+	 */
+	if (lan966x->bridge_mask & BIT(port->chip_port))
+		return -EINVAL;
+
+	if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
+		return -EFAULT;
+
+	switch (cfg.tx_type) {
+	case HWTSTAMP_TX_ON:
+		port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP;
+		break;
+	case HWTSTAMP_TX_ONESTEP_SYNC:
+		port->ptp_cmd = IFH_REW_OP_ONE_STEP_PTP;
+		break;
+	case HWTSTAMP_TX_OFF:
+		port->ptp_cmd = IFH_REW_OP_NOOP;
+		break;
+	default:
+		return -ERANGE;
+	}
+
+	switch (cfg.rx_filter) {
+	case HWTSTAMP_FILTER_NONE:
+		break;
+	case HWTSTAMP_FILTER_ALL:
+	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+	case HWTSTAMP_FILTER_NTP_ALL:
+		cfg.rx_filter = HWTSTAMP_FILTER_ALL;
+		break;
+	default:
+		return -ERANGE;
+	}
+
+	/* Commit back the result & save it */
+	mutex_lock(&lan966x->ptp_lock);
+	phc = &lan966x->phc[LAN966X_PHC_PORT];
+	memcpy(&phc->hwtstamp_config, &cfg, sizeof(cfg));
+	mutex_unlock(&lan966x->ptp_lock);
+
+	return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
+}
+
+int lan966x_ptp_hwtstamp_get(struct lan966x_port *port, struct ifreq *ifr)
+{
+	struct lan966x *lan966x = port->lan966x;
+	struct lan966x_phc *phc;
+
+	phc = &lan966x->phc[LAN966X_PHC_PORT];
+	return copy_to_user(ifr->ifr_data, &phc->hwtstamp_config,
+			    sizeof(phc->hwtstamp_config)) ? -EFAULT : 0;
+}
+
+static int lan966x_ptp_classify(struct lan966x_port *port, struct sk_buff *skb)
+{
+	struct ptp_header *header;
+	u8 msgtype;
+	int type;
+
+	if (port->ptp_cmd == IFH_REW_OP_NOOP)
+		return IFH_REW_OP_NOOP;
+
+	type = ptp_classify_raw(skb);
+	if (type == PTP_CLASS_NONE)
+		return IFH_REW_OP_NOOP;
+
+	header = ptp_parse_header(skb, type);
+	if (!header)
+		return IFH_REW_OP_NOOP;
+
+	if (port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP)
+		return IFH_REW_OP_TWO_STEP_PTP;
+
+	/* If it is sync and run 1 step then set the correct operation,
+	 * otherwise run as 2 step
+	 */
+	msgtype = ptp_get_msgtype(header, type);
+	if ((msgtype & 0xf) == 0)
+		return IFH_REW_OP_ONE_STEP_PTP;
+
+	return IFH_REW_OP_TWO_STEP_PTP;
+}
+
+static void lan966x_ptp_txtstamp_old_release(struct lan966x_port *port)
+{
+	struct sk_buff *skb, *skb_tmp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&port->tx_skbs.lock, flags);
+	skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) {
+		if time_after(LAN966X_SKB_CB(skb)->jiffies + LAN966X_PTP_TIMEOUT,
+			      jiffies)
+			break;
+
+		__skb_unlink(skb, &port->tx_skbs);
+		dev_kfree_skb_any(skb);
+	}
+	spin_unlock_irqrestore(&port->tx_skbs.lock, flags);
+}
+
+int lan966x_ptp_txtstamp_request(struct lan966x_port *port,
+				 struct sk_buff *skb)
+{
+	struct lan966x *lan966x = port->lan966x;
+	unsigned long flags;
+	u8 rew_op;
+
+	rew_op = lan966x_ptp_classify(port, skb);
+	LAN966X_SKB_CB(skb)->rew_op = rew_op;
+
+	if (rew_op != IFH_REW_OP_TWO_STEP_PTP)
+		return 0;
+
+	lan966x_ptp_txtstamp_old_release(port);
+
+	spin_lock_irqsave(&lan966x->ptp_ts_id_lock, flags);
+	if (lan966x->ptp_skbs == LAN966X_MAX_PTP_ID) {
+		spin_unlock_irqrestore(&lan966x->ptp_ts_id_lock, flags);
+		return -EBUSY;
+	}
+
+	skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+
+	skb_queue_tail(&port->tx_skbs, skb);
+	LAN966X_SKB_CB(skb)->ts_id = port->ts_id;
+	LAN966X_SKB_CB(skb)->jiffies = jiffies;
+
+	lan966x->ptp_skbs++;
+	port->ts_id++;
+	if (port->ts_id == LAN966X_MAX_PTP_ID)
+		port->ts_id = 0;
+
+	spin_unlock_irqrestore(&lan966x->ptp_ts_id_lock, flags);
+
+	return 0;
+}
+
+void lan966x_ptp_txtstamp_release(struct lan966x_port *port,
+				  struct sk_buff *skb)
+{
+	struct lan966x *lan966x = port->lan966x;
+	unsigned long flags;
+
+	spin_lock_irqsave(&lan966x->ptp_ts_id_lock, flags);
+	port->ts_id--;
+	lan966x->ptp_skbs--;
+	skb_unlink(skb, &port->tx_skbs);
+	spin_unlock_irqrestore(&lan966x->ptp_ts_id_lock, flags);
+}
+
+static void lan966x_get_hwtimestamp(struct lan966x *lan966x,
+				    struct timespec64 *ts,
+				    u32 nsec)
+{
+	/* Read current PTP time to get seconds */
+	unsigned long flags;
+	u32 curr_nsec;
+
+	spin_lock_irqsave(&lan966x->ptp_clock_lock, flags);
+
+	lan_rmw(PTP_PIN_CFG_PIN_ACTION_SET(PTP_PIN_ACTION_SAVE) |
+		PTP_PIN_CFG_PIN_DOM_SET(LAN966X_PHC_PORT) |
+		PTP_PIN_CFG_PIN_SYNC_SET(0),
+		PTP_PIN_CFG_PIN_ACTION |
+		PTP_PIN_CFG_PIN_DOM |
+		PTP_PIN_CFG_PIN_SYNC,
+		lan966x, PTP_PIN_CFG(TOD_ACC_PIN));
+
+	ts->tv_sec = lan_rd(lan966x, PTP_TOD_SEC_LSB(TOD_ACC_PIN));
+	curr_nsec = lan_rd(lan966x, PTP_TOD_NSEC(TOD_ACC_PIN));
+
+	ts->tv_nsec = nsec;
+
+	/* Sec has incremented since the ts was registered */
+	if (curr_nsec < nsec)
+		ts->tv_sec--;
+
+	spin_unlock_irqrestore(&lan966x->ptp_clock_lock, flags);
+}
+
+irqreturn_t lan966x_ptp_irq_handler(int irq, void *args)
+{
+	int budget = LAN966X_MAX_PTP_ID;
+	struct lan966x *lan966x = args;
+
+	while (budget--) {
+		struct sk_buff *skb, *skb_tmp, *skb_match = NULL;
+		struct skb_shared_hwtstamps shhwtstamps;
+		struct lan966x_port *port;
+		struct timespec64 ts;
+		unsigned long flags;
+		u32 val, id, txport;
+		u32 delay;
+
+		val = lan_rd(lan966x, PTP_TWOSTEP_CTRL);
+
+		/* Check if a timestamp can be retrieved */
+		if (!(val & PTP_TWOSTEP_CTRL_VLD))
+			break;
+
+		WARN_ON(val & PTP_TWOSTEP_CTRL_OVFL);
+
+		if (!(val & PTP_TWOSTEP_CTRL_STAMP_TX))
+			continue;
+
+		/* Retrieve the ts Tx port */
+		txport = PTP_TWOSTEP_CTRL_STAMP_PORT_GET(val);
+
+		/* Retrieve its associated skb */
+		port = lan966x->ports[txport];
+
+		/* Retrieve the delay */
+		delay = lan_rd(lan966x, PTP_TWOSTEP_STAMP);
+		delay = PTP_TWOSTEP_STAMP_STAMP_NSEC_GET(delay);
+
+		/* Get next timestamp from fifo, which needs to be the
+		 * rx timestamp which represents the id of the frame
+		 */
+		lan_rmw(PTP_TWOSTEP_CTRL_NXT_SET(1),
+			PTP_TWOSTEP_CTRL_NXT,
+			lan966x, PTP_TWOSTEP_CTRL);
+
+		val = lan_rd(lan966x, PTP_TWOSTEP_CTRL);
+
+		/* Check if a timestamp can be retried */
+		if (!(val & PTP_TWOSTEP_CTRL_VLD))
+			break;
+
+		/* Read RX timestamping to get the ID */
+		id = lan_rd(lan966x, PTP_TWOSTEP_STAMP);
+
+		spin_lock_irqsave(&port->tx_skbs.lock, flags);
+		skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) {
+			if (LAN966X_SKB_CB(skb)->ts_id != id)
+				continue;
+
+			__skb_unlink(skb, &port->tx_skbs);
+			skb_match = skb;
+			break;
+		}
+		spin_unlock_irqrestore(&port->tx_skbs.lock, flags);
+
+		/* Next ts */
+		lan_rmw(PTP_TWOSTEP_CTRL_NXT_SET(1),
+			PTP_TWOSTEP_CTRL_NXT,
+			lan966x, PTP_TWOSTEP_CTRL);
+
+		if (WARN_ON(!skb_match))
+			continue;
+
+		spin_lock(&lan966x->ptp_ts_id_lock);
+		lan966x->ptp_skbs--;
+		spin_unlock(&lan966x->ptp_ts_id_lock);
+
+		/* Get the h/w timestamp */
+		lan966x_get_hwtimestamp(lan966x, &ts, delay);
+
+		/* Set the timestamp into the skb */
+		shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
+		skb_tstamp_tx(skb_match, &shhwtstamps);
+
+		dev_kfree_skb_any(skb_match);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int lan966x_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
+{
+	struct lan966x_phc *phc = container_of(ptp, struct lan966x_phc, info);
+	struct lan966x *lan966x = phc->lan966x;
+	unsigned long flags;
+	bool neg_adj = 0;
+	u64 tod_inc;
+	u64 ref;
+
+	if (!scaled_ppm)
+		return 0;
+
+	if (scaled_ppm < 0) {
+		neg_adj = 1;
+		scaled_ppm = -scaled_ppm;
+	}
+
+	tod_inc = lan966x_ptp_get_nominal_value();
+
+	/* The multiplication is split in 2 separate additions because of
+	 * overflow issues. If scaled_ppm with 16bit fractional part was bigger
+	 * than 20ppm then we got overflow.
+	 */
+	ref = LAN966X_1PPM_FORMAT * (scaled_ppm >> 16);
+	ref += (LAN966X_1PPM_FORMAT * (0xffff & scaled_ppm)) >> 16;
+	tod_inc = neg_adj ? tod_inc - ref : tod_inc + ref;
+
+	spin_lock_irqsave(&lan966x->ptp_clock_lock, flags);
+
+	lan_rmw(PTP_DOM_CFG_CLKCFG_DIS_SET(1 << BIT(phc->index)),
+		PTP_DOM_CFG_CLKCFG_DIS,
+		lan966x, PTP_DOM_CFG);
+
+	lan_wr((u32)tod_inc & 0xFFFFFFFF, lan966x,
+	       PTP_CLK_PER_CFG(phc->index, 0));
+	lan_wr((u32)(tod_inc >> 32), lan966x,
+	       PTP_CLK_PER_CFG(phc->index, 1));
+
+	lan_rmw(PTP_DOM_CFG_CLKCFG_DIS_SET(0),
+		PTP_DOM_CFG_CLKCFG_DIS,
+		lan966x, PTP_DOM_CFG);
+
+	spin_unlock_irqrestore(&lan966x->ptp_clock_lock, flags);
+
+	return 0;
+}
+
+static int lan966x_ptp_settime64(struct ptp_clock_info *ptp,
+				 const struct timespec64 *ts)
+{
+	struct lan966x_phc *phc = container_of(ptp, struct lan966x_phc, info);
+	struct lan966x *lan966x = phc->lan966x;
+	unsigned long flags;
+
+	spin_lock_irqsave(&lan966x->ptp_clock_lock, flags);
+
+	/* Must be in IDLE mode before the time can be loaded */
+	lan_rmw(PTP_PIN_CFG_PIN_ACTION_SET(PTP_PIN_ACTION_IDLE) |
+		PTP_PIN_CFG_PIN_DOM_SET(phc->index) |
+		PTP_PIN_CFG_PIN_SYNC_SET(0),
+		PTP_PIN_CFG_PIN_ACTION |
+		PTP_PIN_CFG_PIN_DOM |
+		PTP_PIN_CFG_PIN_SYNC,
+		lan966x, PTP_PIN_CFG(TOD_ACC_PIN));
+
+	/* Set new value */
+	lan_wr(PTP_TOD_SEC_MSB_TOD_SEC_MSB_SET(upper_32_bits(ts->tv_sec)),
+	       lan966x, PTP_TOD_SEC_MSB(TOD_ACC_PIN));
+	lan_wr(lower_32_bits(ts->tv_sec),
+	       lan966x, PTP_TOD_SEC_LSB(TOD_ACC_PIN));
+	lan_wr(ts->tv_nsec, lan966x, PTP_TOD_NSEC(TOD_ACC_PIN));
+
+	/* Apply new values */
+	lan_rmw(PTP_PIN_CFG_PIN_ACTION_SET(PTP_PIN_ACTION_LOAD) |
+		PTP_PIN_CFG_PIN_DOM_SET(phc->index) |
+		PTP_PIN_CFG_PIN_SYNC_SET(0),
+		PTP_PIN_CFG_PIN_ACTION |
+		PTP_PIN_CFG_PIN_DOM |
+		PTP_PIN_CFG_PIN_SYNC,
+		lan966x, PTP_PIN_CFG(TOD_ACC_PIN));
+
+	spin_unlock_irqrestore(&lan966x->ptp_clock_lock, flags);
+
+	return 0;
+}
+
+static int lan966x_ptp_gettime64(struct ptp_clock_info *ptp,
+				 struct timespec64 *ts)
+{
+	struct lan966x_phc *phc = container_of(ptp, struct lan966x_phc, info);
+	struct lan966x *lan966x = phc->lan966x;
+	unsigned long flags;
+	time64_t s;
+	s64 ns;
+
+	spin_lock_irqsave(&lan966x->ptp_clock_lock, flags);
+
+	lan_rmw(PTP_PIN_CFG_PIN_ACTION_SET(PTP_PIN_ACTION_SAVE) |
+		PTP_PIN_CFG_PIN_DOM_SET(phc->index) |
+		PTP_PIN_CFG_PIN_SYNC_SET(0),
+		PTP_PIN_CFG_PIN_ACTION |
+		PTP_PIN_CFG_PIN_DOM |
+		PTP_PIN_CFG_PIN_SYNC,
+		lan966x, PTP_PIN_CFG(TOD_ACC_PIN));
+
+	s = lan_rd(lan966x, PTP_TOD_SEC_MSB(TOD_ACC_PIN));
+	s <<= 32;
+	s |= lan_rd(lan966x, PTP_TOD_SEC_LSB(TOD_ACC_PIN));
+	ns = lan_rd(lan966x, PTP_TOD_NSEC(TOD_ACC_PIN));
+	ns &= PTP_TOD_NSEC_TOD_NSEC;
+
+	spin_unlock_irqrestore(&lan966x->ptp_clock_lock, flags);
+
+	/* Deal with negative values */
+	if ((ns & 0xFFFFFFF0) == 0x3FFFFFF0) {
+		s--;
+		ns &= 0xf;
+		ns += 999999984;
+	}
+
+	set_normalized_timespec64(ts, s, ns);
+	return 0;
+}
+
+static int lan966x_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+	struct lan966x_phc *phc = container_of(ptp, struct lan966x_phc, info);
+	struct lan966x *lan966x = phc->lan966x;
+
+	if (delta > -(NSEC_PER_SEC / 2) && delta < (NSEC_PER_SEC / 2)) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&lan966x->ptp_clock_lock, flags);
+
+		/* Must be in IDLE mode before the time can be loaded */
+		lan_rmw(PTP_PIN_CFG_PIN_ACTION_SET(PTP_PIN_ACTION_IDLE) |
+			PTP_PIN_CFG_PIN_DOM_SET(phc->index) |
+			PTP_PIN_CFG_PIN_SYNC_SET(0),
+			PTP_PIN_CFG_PIN_ACTION |
+			PTP_PIN_CFG_PIN_DOM |
+			PTP_PIN_CFG_PIN_SYNC,
+			lan966x, PTP_PIN_CFG(TOD_ACC_PIN));
+
+		lan_wr(PTP_TOD_NSEC_TOD_NSEC_SET(delta),
+		       lan966x, PTP_TOD_NSEC(TOD_ACC_PIN));
+
+		/* Adjust time with the value of PTP_TOD_NSEC */
+		lan_rmw(PTP_PIN_CFG_PIN_ACTION_SET(PTP_PIN_ACTION_DELTA) |
+			PTP_PIN_CFG_PIN_DOM_SET(phc->index) |
+			PTP_PIN_CFG_PIN_SYNC_SET(0),
+			PTP_PIN_CFG_PIN_ACTION |
+			PTP_PIN_CFG_PIN_DOM |
+			PTP_PIN_CFG_PIN_SYNC,
+			lan966x, PTP_PIN_CFG(TOD_ACC_PIN));
+
+		spin_unlock_irqrestore(&lan966x->ptp_clock_lock, flags);
+	} else {
+		/* Fall back using lan966x_ptp_settime64 which is not exact */
+		struct timespec64 ts;
+		u64 now;
+
+		lan966x_ptp_gettime64(ptp, &ts);
+
+		now = ktime_to_ns(timespec64_to_ktime(ts));
+		ts = ns_to_timespec64(now + delta);
+
+		lan966x_ptp_settime64(ptp, &ts);
+	}
+
+	return 0;
+}
+
+static struct ptp_clock_info lan966x_ptp_clock_info = {
+	.owner		= THIS_MODULE,
+	.name		= "lan966x ptp",
+	.max_adj	= 200000,
+	.gettime64	= lan966x_ptp_gettime64,
+	.settime64	= lan966x_ptp_settime64,
+	.adjtime	= lan966x_ptp_adjtime,
+	.adjfine	= lan966x_ptp_adjfine,
+};
+
+static int lan966x_ptp_phc_init(struct lan966x *lan966x,
+				int index,
+				struct ptp_clock_info *clock_info)
+{
+	struct lan966x_phc *phc = &lan966x->phc[index];
+
+	phc->info = *clock_info;
+	phc->clock = ptp_clock_register(&phc->info, lan966x->dev);
+	if (IS_ERR(phc->clock))
+		return PTR_ERR(phc->clock);
+
+	phc->index = index;
+	phc->lan966x = lan966x;
+
+	/* PTP Rx stamping is always enabled.  */
+	phc->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
+
+	return 0;
+}
+
+int lan966x_ptp_init(struct lan966x *lan966x)
+{
+	u64 tod_adj = lan966x_ptp_get_nominal_value();
+	struct lan966x_port *port;
+	int err, i;
+
+	if (!lan966x->ptp)
+		return 0;
+
+	for (i = 0; i < LAN966X_PHC_COUNT; ++i) {
+		err = lan966x_ptp_phc_init(lan966x, i, &lan966x_ptp_clock_info);
+		if (err)
+			return err;
+	}
+
+	spin_lock_init(&lan966x->ptp_clock_lock);
+	spin_lock_init(&lan966x->ptp_ts_id_lock);
+	mutex_init(&lan966x->ptp_lock);
+
+	/* Disable master counters */
+	lan_wr(PTP_DOM_CFG_ENA_SET(0), lan966x, PTP_DOM_CFG);
+
+	/* Configure the nominal TOD increment per clock cycle */
+	lan_rmw(PTP_DOM_CFG_CLKCFG_DIS_SET(0x7),
+		PTP_DOM_CFG_CLKCFG_DIS,
+		lan966x, PTP_DOM_CFG);
+
+	for (i = 0; i < LAN966X_PHC_COUNT; ++i) {
+		lan_wr((u32)tod_adj & 0xFFFFFFFF, lan966x,
+		       PTP_CLK_PER_CFG(i, 0));
+		lan_wr((u32)(tod_adj >> 32), lan966x,
+		       PTP_CLK_PER_CFG(i, 1));
+	}
+
+	lan_rmw(PTP_DOM_CFG_CLKCFG_DIS_SET(0),
+		PTP_DOM_CFG_CLKCFG_DIS,
+		lan966x, PTP_DOM_CFG);
+
+	/* Enable master counters */
+	lan_wr(PTP_DOM_CFG_ENA_SET(0x7), lan966x, PTP_DOM_CFG);
+
+	for (i = 0; i < lan966x->num_phys_ports; i++) {
+		port = lan966x->ports[i];
+		if (!port)
+			continue;
+
+		skb_queue_head_init(&port->tx_skbs);
+	}
+
+	return 0;
+}
+
+void lan966x_ptp_deinit(struct lan966x *lan966x)
+{
+	struct lan966x_port *port;
+	int i;
+
+	for (i = 0; i < lan966x->num_phys_ports; i++) {
+		port = lan966x->ports[i];
+		if (!port)
+			continue;
+
+		skb_queue_purge(&port->tx_skbs);
+	}
+
+	for (i = 0; i < LAN966X_PHC_COUNT; ++i)
+		ptp_clock_unregister(lan966x->phc[i].clock);
+}
+
+void lan966x_ptp_rxtstamp(struct lan966x *lan966x, struct sk_buff *skb,
+			  u64 timestamp)
+{
+	struct skb_shared_hwtstamps *shhwtstamps;
+	struct lan966x_phc *phc;
+	struct timespec64 ts;
+	u64 full_ts_in_ns;
+
+	if (!lan966x->ptp)
+		return;
+
+	phc = &lan966x->phc[LAN966X_PHC_PORT];
+	lan966x_ptp_gettime64(&phc->info, &ts);
+
+	/* Drop the sub-ns precision */
+	timestamp = timestamp >> 2;
+	if (ts.tv_nsec < timestamp)
+		ts.tv_sec--;
+	ts.tv_nsec = timestamp;
+	full_ts_in_ns = ktime_set(ts.tv_sec, ts.tv_nsec);
+
+	shhwtstamps = skb_hwtstamps(skb);
+	shhwtstamps->hwtstamp = full_ts_in_ns;
+}

drivers/net/ethernet/microchip/lan966x/lan966x_regs.h

@@ -19,6 +19,7 @@ enum lan966x_target {
 	TARGET_DEV = 13,
 	TARGET_GCB = 27,
 	TARGET_ORG = 36,
+	TARGET_PTP = 41,
 	TARGET_QS = 42,
 	TARGET_QSYS = 46,
 	TARGET_REW = 47,
@@ -559,6 +560,108 @@ enum lan966x_target {
 #define DEV_PCS1G_STICKY_LINK_DOWN_STICKY_GET(x)\
 	FIELD_GET(DEV_PCS1G_STICKY_LINK_DOWN_STICKY, x)
 
+/*      PTP:PTP_CFG:PTP_DOM_CFG */
+#define PTP_DOM_CFG               __REG(TARGET_PTP, 0, 1, 512, 0, 1, 16, 12, 0, 1, 4)
+
+#define PTP_DOM_CFG_ENA                          GENMASK(11, 9)
+#define PTP_DOM_CFG_ENA_SET(x)\
+	FIELD_PREP(PTP_DOM_CFG_ENA, x)
+#define PTP_DOM_CFG_ENA_GET(x)\
+	FIELD_GET(PTP_DOM_CFG_ENA, x)
+
+#define PTP_DOM_CFG_CLKCFG_DIS                   GENMASK(2, 0)
+#define PTP_DOM_CFG_CLKCFG_DIS_SET(x)\
+	FIELD_PREP(PTP_DOM_CFG_CLKCFG_DIS, x)
+#define PTP_DOM_CFG_CLKCFG_DIS_GET(x)\
+	FIELD_GET(PTP_DOM_CFG_CLKCFG_DIS, x)
+
+/*      PTP:PTP_TOD_DOMAINS:CLK_PER_CFG */
+#define PTP_CLK_PER_CFG(g, r)     __REG(TARGET_PTP, 0, 1, 528, g, 3, 28, 0, r, 2, 4)
+
+/*      PTP:PTP_PINS:PTP_PIN_CFG */
+#define PTP_PIN_CFG(g)            __REG(TARGET_PTP, 0, 1, 0, g, 8, 64, 0, 0, 1, 4)
+
+#define PTP_PIN_CFG_PIN_ACTION                   GENMASK(29, 27)
+#define PTP_PIN_CFG_PIN_ACTION_SET(x)\
+	FIELD_PREP(PTP_PIN_CFG_PIN_ACTION, x)
+#define PTP_PIN_CFG_PIN_ACTION_GET(x)\
+	FIELD_GET(PTP_PIN_CFG_PIN_ACTION, x)
+
+#define PTP_PIN_CFG_PIN_SYNC                     GENMASK(26, 25)
+#define PTP_PIN_CFG_PIN_SYNC_SET(x)\
+	FIELD_PREP(PTP_PIN_CFG_PIN_SYNC, x)
+#define PTP_PIN_CFG_PIN_SYNC_GET(x)\
+	FIELD_GET(PTP_PIN_CFG_PIN_SYNC, x)
+
+#define PTP_PIN_CFG_PIN_DOM                      GENMASK(17, 16)
+#define PTP_PIN_CFG_PIN_DOM_SET(x)\
+	FIELD_PREP(PTP_PIN_CFG_PIN_DOM, x)
+#define PTP_PIN_CFG_PIN_DOM_GET(x)\
+	FIELD_GET(PTP_PIN_CFG_PIN_DOM, x)
+
+/*      PTP:PTP_PINS:PTP_TOD_SEC_MSB */
+#define PTP_TOD_SEC_MSB(g)        __REG(TARGET_PTP, 0, 1, 0, g, 8, 64, 4, 0, 1, 4)
+
+#define PTP_TOD_SEC_MSB_TOD_SEC_MSB              GENMASK(15, 0)
+#define PTP_TOD_SEC_MSB_TOD_SEC_MSB_SET(x)\
+	FIELD_PREP(PTP_TOD_SEC_MSB_TOD_SEC_MSB, x)
+#define PTP_TOD_SEC_MSB_TOD_SEC_MSB_GET(x)\
+	FIELD_GET(PTP_TOD_SEC_MSB_TOD_SEC_MSB, x)
+
+/*      PTP:PTP_PINS:PTP_TOD_SEC_LSB */
+#define PTP_TOD_SEC_LSB(g)        __REG(TARGET_PTP, 0, 1, 0, g, 8, 64, 8, 0, 1, 4)
+
+/*      PTP:PTP_PINS:PTP_TOD_NSEC */
+#define PTP_TOD_NSEC(g)           __REG(TARGET_PTP, 0, 1, 0, g, 8, 64, 12, 0, 1, 4)
+
+#define PTP_TOD_NSEC_TOD_NSEC                    GENMASK(29, 0)
+#define PTP_TOD_NSEC_TOD_NSEC_SET(x)\
+	FIELD_PREP(PTP_TOD_NSEC_TOD_NSEC, x)
+#define PTP_TOD_NSEC_TOD_NSEC_GET(x)\
+	FIELD_GET(PTP_TOD_NSEC_TOD_NSEC, x)
+
+/*      PTP:PTP_TS_FIFO:PTP_TWOSTEP_CTRL */
+#define PTP_TWOSTEP_CTRL          __REG(TARGET_PTP, 0, 1, 612, 0, 1, 12, 0, 0, 1, 4)
+
+#define PTP_TWOSTEP_CTRL_NXT                     BIT(11)
+#define PTP_TWOSTEP_CTRL_NXT_SET(x)\
+	FIELD_PREP(PTP_TWOSTEP_CTRL_NXT, x)
+#define PTP_TWOSTEP_CTRL_NXT_GET(x)\
+	FIELD_GET(PTP_TWOSTEP_CTRL_NXT, x)
+
+#define PTP_TWOSTEP_CTRL_VLD                     BIT(10)
+#define PTP_TWOSTEP_CTRL_VLD_SET(x)\
+	FIELD_PREP(PTP_TWOSTEP_CTRL_VLD, x)
+#define PTP_TWOSTEP_CTRL_VLD_GET(x)\
+	FIELD_GET(PTP_TWOSTEP_CTRL_VLD, x)
+
+#define PTP_TWOSTEP_CTRL_STAMP_TX                BIT(9)
+#define PTP_TWOSTEP_CTRL_STAMP_TX_SET(x)\
+	FIELD_PREP(PTP_TWOSTEP_CTRL_STAMP_TX, x)
+#define PTP_TWOSTEP_CTRL_STAMP_TX_GET(x)\
+	FIELD_GET(PTP_TWOSTEP_CTRL_STAMP_TX, x)
+
+#define PTP_TWOSTEP_CTRL_STAMP_PORT              GENMASK(8, 1)
+#define PTP_TWOSTEP_CTRL_STAMP_PORT_SET(x)\
+	FIELD_PREP(PTP_TWOSTEP_CTRL_STAMP_PORT, x)
+#define PTP_TWOSTEP_CTRL_STAMP_PORT_GET(x)\
+	FIELD_GET(PTP_TWOSTEP_CTRL_STAMP_PORT, x)
+
+#define PTP_TWOSTEP_CTRL_OVFL                    BIT(0)
+#define PTP_TWOSTEP_CTRL_OVFL_SET(x)\
+	FIELD_PREP(PTP_TWOSTEP_CTRL_OVFL, x)
+#define PTP_TWOSTEP_CTRL_OVFL_GET(x)\
+	FIELD_GET(PTP_TWOSTEP_CTRL_OVFL, x)
+
+/*      PTP:PTP_TS_FIFO:PTP_TWOSTEP_STAMP */
+#define PTP_TWOSTEP_STAMP         __REG(TARGET_PTP, 0, 1, 612, 0, 1, 12, 4, 0, 1, 4)
+
+#define PTP_TWOSTEP_STAMP_STAMP_NSEC             GENMASK(31, 2)
+#define PTP_TWOSTEP_STAMP_STAMP_NSEC_SET(x)\
+	FIELD_PREP(PTP_TWOSTEP_STAMP_STAMP_NSEC, x)
+#define PTP_TWOSTEP_STAMP_STAMP_NSEC_GET(x)\
+	FIELD_GET(PTP_TWOSTEP_STAMP_STAMP_NSEC, x)
+
 /*      DEVCPU_QS:XTR:XTR_GRP_CFG */
 #define QS_XTR_GRP_CFG(r)         __REG(TARGET_QS, 0, 1, 0, 0, 1, 36, 0, r, 2, 4)