qede: Add driver support for PTP

This patch adds the driver support for,
  - Registering the ptp clock functionality with the OS.
  - Timestamping the Rx/Tx PTP packets.
  - Ethtool callbacks related to PTP.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 39 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 40a76a1d5973..d163e72aa2a6 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -62,6 +62,7 @@
 #include <linux/vmalloc.h>
 #include <linux/qed/qede_roce.h>
 #include "qede.h"
+#include "qede_ptp.h"
 
 static char version[] =
 	"QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
@@ -484,6 +485,25 @@ static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
 }
 #endif
 
+static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct qede_dev *edev = netdev_priv(dev);
+
+	if (!netif_running(dev))
+		return -EAGAIN;
+
+	switch (cmd) {
+	case SIOCSHWTSTAMP:
+		return qede_ptp_hw_ts(edev, ifr);
+	default:
+		DP_VERBOSE(edev, QED_MSG_DEBUG,
+			   "default IOCTL cmd 0x%x\n", cmd);
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
 static const struct net_device_ops qede_netdev_ops = {
 	.ndo_open = qede_open,
 	.ndo_stop = qede_close,
@@ -492,6 +512,7 @@ static const struct net_device_ops qede_netdev_ops = {
 	.ndo_set_mac_address = qede_set_mac_addr,
 	.ndo_validate_addr = eth_validate_addr,
 	.ndo_change_mtu = qede_change_mtu,
+	.ndo_do_ioctl = qede_ioctl,
 #ifdef CONFIG_QED_SRIOV
 	.ndo_set_vf_mac = qede_set_vf_mac,
 	.ndo_set_vf_vlan = qede_set_vf_vlan,
@@ -841,6 +862,15 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 
 	edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
 
+	/* PTP not supported on VFs */
+	if (!is_vf) {
+		rc = qede_ptp_register_phc(edev);
+		if (rc) {
+			DP_NOTICE(edev, "Cannot register PHC\n");
+			goto err5;
+		}
+	}
+
 	edev->ops->register_ops(cdev, &qede_ll_ops, edev);
 
 #ifdef CONFIG_DCB
@@ -856,6 +886,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 
 	return 0;
 
+err5:
+	unregister_netdev(edev->ndev);
 err4:
 	qede_roce_dev_remove(edev);
 err3:
@@ -907,6 +939,8 @@ static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
 
 	unregister_netdev(ndev);
 
+	qede_ptp_remove(edev);
+
 	qede_roce_dev_remove(edev);
 
 	edev->ops->common->set_power_state(cdev, PCI_D0);
@@ -1660,6 +1694,7 @@ static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
 	if (!vport_update_params)
 		return -ENOMEM;
 
+	start.handle_ptp_pkts = !!(edev->ptp);
 	start.gro_enable = !edev->gro_disable;
 	start.mtu = edev->ndev->mtu;
 	start.vport_id = 0;
@@ -1781,6 +1816,8 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
 	qede_roce_dev_event_close(edev);
 	edev->state = QEDE_STATE_CLOSED;
 
+	qede_ptp_stop(edev);
+
 	/* Close OS Tx */
 	netif_tx_disable(edev->ndev);
 	netif_carrier_off(edev->ndev);
@@ -1882,6 +1919,8 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
 	qede_roce_dev_event_open(edev);
 	qede_link_update(edev, &link_output);
 
+	qede_ptp_start(edev, (mode == QEDE_LOAD_NORMAL));
+
 	edev->state = QEDE_STATE_OPEN;
 
 	DP_INFO(edev, "Ending successfully qede load\n");