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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
This commit is contained in:
parent
c78c70fa30
commit
4c55215c05
@ -104,6 +104,7 @@ config QED_SRIOV
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config QEDE
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tristate "QLogic QED 25/40/100Gb Ethernet NIC"
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depends on QED
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imply PTP_1588_CLOCK
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---help---
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This enables the support for ...
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@ -1,5 +1,5 @@
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obj-$(CONFIG_QEDE) := qede.o
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qede-y := qede_main.o qede_fp.o qede_filter.o qede_ethtool.o
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qede-y := qede_main.o qede_fp.o qede_filter.o qede_ethtool.o qede_ptp.o
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qede-$(CONFIG_DCB) += qede_dcbnl.o
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qede-$(CONFIG_QED_RDMA) += qede_roce.o
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@ -137,6 +137,8 @@ struct qede_rdma_dev {
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struct workqueue_struct *roce_wq;
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};
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struct qede_ptp;
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struct qede_dev {
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struct qed_dev *cdev;
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struct net_device *ndev;
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@ -148,8 +150,10 @@ struct qede_dev {
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u32 flags;
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#define QEDE_FLAG_IS_VF BIT(0)
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#define IS_VF(edev) (!!((edev)->flags & QEDE_FLAG_IS_VF))
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#define QEDE_TX_TIMESTAMPING_EN BIT(1)
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const struct qed_eth_ops *ops;
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struct qede_ptp *ptp;
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struct qed_dev_eth_info dev_info;
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#define QEDE_MAX_RSS_CNT(edev) ((edev)->dev_info.num_queues)
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@ -39,6 +39,7 @@
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#include <linux/capability.h>
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#include <linux/vmalloc.h>
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#include "qede.h"
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#include "qede_ptp.h"
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#define QEDE_RQSTAT_OFFSET(stat_name) \
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(offsetof(struct qede_rx_queue, stat_name))
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@ -940,6 +941,14 @@ static int qede_set_channels(struct net_device *dev,
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return 0;
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}
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static int qede_get_ts_info(struct net_device *dev,
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struct ethtool_ts_info *info)
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{
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struct qede_dev *edev = netdev_priv(dev);
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return qede_ptp_get_ts_info(edev, info);
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}
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static int qede_set_phys_id(struct net_device *dev,
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enum ethtool_phys_id_state state)
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{
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@ -1586,6 +1595,7 @@ static const struct ethtool_ops qede_ethtool_ops = {
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.get_rxfh_key_size = qede_get_rxfh_key_size,
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.get_rxfh = qede_get_rxfh,
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.set_rxfh = qede_set_rxfh,
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.get_ts_info = qede_get_ts_info,
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.get_channels = qede_get_channels,
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.set_channels = qede_set_channels,
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.self_test = qede_self_test,
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@ -40,6 +40,7 @@
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <net/ip6_checksum.h>
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#include "qede_ptp.h"
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#include <linux/qed/qed_if.h>
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#include "qede.h"
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@ -1277,6 +1278,7 @@ static int qede_rx_process_cqe(struct qede_dev *edev,
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qede_get_rxhash(skb, fp_cqe->bitfields, fp_cqe->rss_hash);
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qede_set_skb_csum(skb, csum_flag);
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skb_record_rx_queue(skb, rxq->rxq_id);
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qede_ptp_record_rx_ts(edev, cqe, skb);
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/* SKB is prepared - pass it to stack */
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qede_skb_receive(edev, fp, rxq, skb, le16_to_cpu(fp_cqe->vlan_tag));
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@ -1451,6 +1453,9 @@ netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev)
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first_bd->data.bd_flags.bitfields =
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1 << ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT;
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if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
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qede_ptp_tx_ts(edev, skb);
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/* Map skb linear data for DMA and set in the first BD */
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mapping = dma_map_single(txq->dev, skb->data,
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skb_headlen(skb), DMA_TO_DEVICE);
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@ -62,6 +62,7 @@
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#include <linux/vmalloc.h>
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#include <linux/qed/qede_roce.h>
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#include "qede.h"
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#include "qede_ptp.h"
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static char version[] =
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"QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
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@ -484,6 +485,25 @@ static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
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}
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#endif
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static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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{
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struct qede_dev *edev = netdev_priv(dev);
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if (!netif_running(dev))
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return -EAGAIN;
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switch (cmd) {
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case SIOCSHWTSTAMP:
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return qede_ptp_hw_ts(edev, ifr);
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default:
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DP_VERBOSE(edev, QED_MSG_DEBUG,
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"default IOCTL cmd 0x%x\n", cmd);
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static const struct net_device_ops qede_netdev_ops = {
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.ndo_open = qede_open,
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.ndo_stop = qede_close,
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@ -492,6 +512,7 @@ static const struct net_device_ops qede_netdev_ops = {
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.ndo_set_mac_address = qede_set_mac_addr,
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.ndo_validate_addr = eth_validate_addr,
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.ndo_change_mtu = qede_change_mtu,
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.ndo_do_ioctl = qede_ioctl,
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#ifdef CONFIG_QED_SRIOV
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.ndo_set_vf_mac = qede_set_vf_mac,
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.ndo_set_vf_vlan = qede_set_vf_vlan,
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@ -841,6 +862,15 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
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edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
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/* PTP not supported on VFs */
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if (!is_vf) {
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rc = qede_ptp_register_phc(edev);
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if (rc) {
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DP_NOTICE(edev, "Cannot register PHC\n");
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goto err5;
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}
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}
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edev->ops->register_ops(cdev, &qede_ll_ops, edev);
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#ifdef CONFIG_DCB
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@ -856,6 +886,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
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return 0;
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err5:
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unregister_netdev(edev->ndev);
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err4:
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qede_roce_dev_remove(edev);
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err3:
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@ -907,6 +939,8 @@ static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
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unregister_netdev(ndev);
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qede_ptp_remove(edev);
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qede_roce_dev_remove(edev);
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edev->ops->common->set_power_state(cdev, PCI_D0);
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@ -1660,6 +1694,7 @@ static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
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if (!vport_update_params)
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return -ENOMEM;
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start.handle_ptp_pkts = !!(edev->ptp);
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start.gro_enable = !edev->gro_disable;
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start.mtu = edev->ndev->mtu;
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start.vport_id = 0;
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@ -1781,6 +1816,8 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
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qede_roce_dev_event_close(edev);
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edev->state = QEDE_STATE_CLOSED;
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qede_ptp_stop(edev);
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/* Close OS Tx */
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netif_tx_disable(edev->ndev);
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netif_carrier_off(edev->ndev);
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@ -1882,6 +1919,8 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
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qede_roce_dev_event_open(edev);
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qede_link_update(edev, &link_output);
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qede_ptp_start(edev, (mode == QEDE_LOAD_NORMAL));
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edev->state = QEDE_STATE_OPEN;
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DP_INFO(edev, "Ending successfully qede load\n");
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536
drivers/net/ethernet/qlogic/qede/qede_ptp.c
Normal file
536
drivers/net/ethernet/qlogic/qede/qede_ptp.c
Normal file
@ -0,0 +1,536 @@
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/* QLogic qede NIC Driver
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* Copyright (c) 2015-2017 QLogic Corporation
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and /or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "qede_ptp.h"
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struct qede_ptp {
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const struct qed_eth_ptp_ops *ops;
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struct ptp_clock_info clock_info;
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struct cyclecounter cc;
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struct timecounter tc;
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struct ptp_clock *clock;
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struct work_struct work;
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struct qede_dev *edev;
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struct sk_buff *tx_skb;
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/* ptp spinlock is used for protecting the cycle/time counter fields
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* and, also for serializing the qed PTP API invocations.
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*/
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spinlock_t lock;
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bool hw_ts_ioctl_called;
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u16 tx_type;
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u16 rx_filter;
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};
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/**
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* qede_ptp_adjfreq
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* @ptp: the ptp clock structure
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* @ppb: parts per billion adjustment from base
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*
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* Adjust the frequency of the ptp cycle counter by the
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* indicated ppb from the base frequency.
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*/
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static int qede_ptp_adjfreq(struct ptp_clock_info *info, s32 ppb)
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{
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struct qede_ptp *ptp = container_of(info, struct qede_ptp, clock_info);
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struct qede_dev *edev = ptp->edev;
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int rc;
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__qede_lock(edev);
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if (edev->state == QEDE_STATE_OPEN) {
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spin_lock_bh(&ptp->lock);
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rc = ptp->ops->adjfreq(edev->cdev, ppb);
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spin_unlock_bh(&ptp->lock);
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} else {
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DP_ERR(edev, "PTP adjfreq called while interface is down\n");
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rc = -EFAULT;
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}
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__qede_unlock(edev);
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return rc;
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}
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static int qede_ptp_adjtime(struct ptp_clock_info *info, s64 delta)
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{
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struct qede_dev *edev;
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struct qede_ptp *ptp;
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ptp = container_of(info, struct qede_ptp, clock_info);
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edev = ptp->edev;
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DP_VERBOSE(edev, QED_MSG_DEBUG, "PTP adjtime called, delta = %llx\n",
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delta);
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spin_lock_bh(&ptp->lock);
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timecounter_adjtime(&ptp->tc, delta);
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spin_unlock_bh(&ptp->lock);
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return 0;
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}
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static int qede_ptp_gettime(struct ptp_clock_info *info, struct timespec64 *ts)
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{
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struct qede_dev *edev;
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struct qede_ptp *ptp;
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u64 ns;
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ptp = container_of(info, struct qede_ptp, clock_info);
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edev = ptp->edev;
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spin_lock_bh(&ptp->lock);
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ns = timecounter_read(&ptp->tc);
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spin_unlock_bh(&ptp->lock);
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DP_VERBOSE(edev, QED_MSG_DEBUG, "PTP gettime called, ns = %llu\n", ns);
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*ts = ns_to_timespec64(ns);
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return 0;
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}
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static int qede_ptp_settime(struct ptp_clock_info *info,
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const struct timespec64 *ts)
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{
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struct qede_dev *edev;
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struct qede_ptp *ptp;
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u64 ns;
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ptp = container_of(info, struct qede_ptp, clock_info);
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edev = ptp->edev;
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ns = timespec64_to_ns(ts);
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DP_VERBOSE(edev, QED_MSG_DEBUG, "PTP settime called, ns = %llu\n", ns);
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/* Re-init the timecounter */
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spin_lock_bh(&ptp->lock);
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timecounter_init(&ptp->tc, &ptp->cc, ns);
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spin_unlock_bh(&ptp->lock);
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return 0;
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}
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/* Enable (or disable) ancillary features of the phc subsystem */
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static int qede_ptp_ancillary_feature_enable(struct ptp_clock_info *info,
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struct ptp_clock_request *rq,
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int on)
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{
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struct qede_dev *edev;
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struct qede_ptp *ptp;
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ptp = container_of(info, struct qede_ptp, clock_info);
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edev = ptp->edev;
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DP_ERR(edev, "PHC ancillary features are not supported\n");
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return -ENOTSUPP;
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}
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static void qede_ptp_task(struct work_struct *work)
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{
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struct skb_shared_hwtstamps shhwtstamps;
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struct qede_dev *edev;
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struct qede_ptp *ptp;
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u64 timestamp, ns;
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int rc;
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ptp = container_of(work, struct qede_ptp, work);
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edev = ptp->edev;
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/* Read Tx timestamp registers */
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spin_lock_bh(&ptp->lock);
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rc = ptp->ops->read_tx_ts(edev->cdev, ×tamp);
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spin_unlock_bh(&ptp->lock);
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if (rc) {
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/* Reschedule to keep checking for a valid timestamp value */
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schedule_work(&ptp->work);
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return;
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}
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ns = timecounter_cyc2time(&ptp->tc, timestamp);
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memset(&shhwtstamps, 0, sizeof(shhwtstamps));
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shhwtstamps.hwtstamp = ns_to_ktime(ns);
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skb_tstamp_tx(ptp->tx_skb, &shhwtstamps);
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dev_kfree_skb_any(ptp->tx_skb);
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ptp->tx_skb = NULL;
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DP_VERBOSE(edev, QED_MSG_DEBUG,
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"Tx timestamp, timestamp cycles = %llu, ns = %llu\n",
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timestamp, ns);
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}
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/* Read the PHC. This API is invoked with ptp_lock held. */
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static u64 qede_ptp_read_cc(const struct cyclecounter *cc)
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{
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struct qede_dev *edev;
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struct qede_ptp *ptp;
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u64 phc_cycles;
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int rc;
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ptp = container_of(cc, struct qede_ptp, cc);
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edev = ptp->edev;
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rc = ptp->ops->read_cc(edev->cdev, &phc_cycles);
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if (rc)
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WARN_ONCE(1, "PHC read err %d\n", rc);
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DP_VERBOSE(edev, QED_MSG_DEBUG, "PHC read cycles = %llu\n", phc_cycles);
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return phc_cycles;
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}
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static void qede_ptp_init_cc(struct qede_dev *edev)
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{
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struct qede_ptp *ptp;
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ptp = edev->ptp;
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if (!ptp)
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return;
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memset(&ptp->cc, 0, sizeof(ptp->cc));
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ptp->cc.read = qede_ptp_read_cc;
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ptp->cc.mask = CYCLECOUNTER_MASK(64);
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ptp->cc.shift = 0;
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ptp->cc.mult = 1;
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}
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static int qede_ptp_cfg_filters(struct qede_dev *edev)
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{
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struct qede_ptp *ptp = edev->ptp;
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if (!ptp)
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return -EIO;
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if (!ptp->hw_ts_ioctl_called) {
|
||||
DP_INFO(edev, "TS IOCTL not called\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
switch (ptp->tx_type) {
|
||||
case HWTSTAMP_TX_ON:
|
||||
edev->flags |= QEDE_TX_TIMESTAMPING_EN;
|
||||
ptp->ops->hwtstamp_tx_on(edev->cdev);
|
||||
break;
|
||||
|
||||
case HWTSTAMP_TX_ONESTEP_SYNC:
|
||||
DP_ERR(edev, "One-step timestamping is not supported\n");
|
||||
return -ERANGE;
|
||||
}
|
||||
|
||||
spin_lock_bh(&ptp->lock);
|
||||
switch (ptp->rx_filter) {
|
||||
case HWTSTAMP_FILTER_NONE:
|
||||
break;
|
||||
case HWTSTAMP_FILTER_ALL:
|
||||
case HWTSTAMP_FILTER_SOME:
|
||||
ptp->rx_filter = HWTSTAMP_FILTER_NONE;
|
||||
break;
|
||||
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
|
||||
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
|
||||
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
|
||||
ptp->rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
|
||||
/* Initialize PTP detection for UDP/IPv4 events */
|
||||
ptp->ops->cfg_rx_filters(edev->cdev, QED_PTP_FILTER_IPV4);
|
||||
break;
|
||||
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
|
||||
case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
|
||||
case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
|
||||
ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
|
||||
/* Initialize PTP detection for UDP/IPv4 or UDP/IPv6 events */
|
||||
ptp->ops->cfg_rx_filters(edev->cdev, QED_PTP_FILTER_IPV4_IPV6);
|
||||
break;
|
||||
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
|
||||
case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
|
||||
case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
|
||||
ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
|
||||
/* Initialize PTP detection L2 events */
|
||||
ptp->ops->cfg_rx_filters(edev->cdev, QED_PTP_FILTER_L2);
|
||||
break;
|
||||
case HWTSTAMP_FILTER_PTP_V2_EVENT:
|
||||
case HWTSTAMP_FILTER_PTP_V2_SYNC:
|
||||
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
|
||||
ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
|
||||
/* Initialize PTP detection L2, UDP/IPv4 or UDP/IPv6 events */
|
||||
ptp->ops->cfg_rx_filters(edev->cdev,
|
||||
QED_PTP_FILTER_L2_IPV4_IPV6);
|
||||
break;
|
||||
}
|
||||
|
||||
spin_unlock_bh(&ptp->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int qede_ptp_hw_ts(struct qede_dev *edev, struct ifreq *ifr)
|
||||
{
|
||||
struct hwtstamp_config config;
|
||||
struct qede_ptp *ptp;
|
||||
int rc;
|
||||
|
||||
ptp = edev->ptp;
|
||||
if (!ptp)
|
||||
return -EIO;
|
||||
|
||||
if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
|
||||
return -EFAULT;
|
||||
|
||||
DP_VERBOSE(edev, QED_MSG_DEBUG,
|
||||
"HWTSTAMP IOCTL: Requested tx_type = %d, requested rx_filters = %d\n",
|
||||
config.tx_type, config.rx_filter);
|
||||
|
||||
if (config.flags) {
|
||||
DP_ERR(edev, "config.flags is reserved for future use\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ptp->hw_ts_ioctl_called = 1;
|
||||
ptp->tx_type = config.tx_type;
|
||||
ptp->rx_filter = config.rx_filter;
|
||||
|
||||
rc = qede_ptp_cfg_filters(edev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
config.rx_filter = ptp->rx_filter;
|
||||
|
||||
return copy_to_user(ifr->ifr_data, &config,
|
||||
sizeof(config)) ? -EFAULT : 0;
|
||||
}
|
||||
|
||||
/* Called during load, to initialize PTP-related stuff */
|
||||
static void qede_ptp_init(struct qede_dev *edev, bool init_tc)
|
||||
{
|
||||
struct qede_ptp *ptp;
|
||||
int rc;
|
||||
|
||||
ptp = edev->ptp;
|
||||
if (!ptp)
|
||||
return;
|
||||
|
||||
spin_lock_init(&ptp->lock);
|
||||
|
||||
/* Configure PTP in HW */
|
||||
rc = ptp->ops->enable(edev->cdev);
|
||||
if (rc) {
|
||||
DP_ERR(edev, "Stopping PTP initialization\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* Init work queue for Tx timestamping */
|
||||
INIT_WORK(&ptp->work, qede_ptp_task);
|
||||
|
||||
/* Init cyclecounter and timecounter. This is done only in the first
|
||||
* load. If done in every load, PTP application will fail when doing
|
||||
* unload / load (e.g. MTU change) while it is running.
|
||||
*/
|
||||
if (init_tc) {
|
||||
qede_ptp_init_cc(edev);
|
||||
timecounter_init(&ptp->tc, &ptp->cc,
|
||||
ktime_to_ns(ktime_get_real()));
|
||||
}
|
||||
|
||||
DP_VERBOSE(edev, QED_MSG_DEBUG, "PTP initialization is successful\n");
|
||||
}
|
||||
|
||||
void qede_ptp_start(struct qede_dev *edev, bool init_tc)
|
||||
{
|
||||
qede_ptp_init(edev, init_tc);
|
||||
qede_ptp_cfg_filters(edev);
|
||||
}
|
||||
|
||||
void qede_ptp_remove(struct qede_dev *edev)
|
||||
{
|
||||
struct qede_ptp *ptp;
|
||||
|
||||
ptp = edev->ptp;
|
||||
if (ptp && ptp->clock) {
|
||||
ptp_clock_unregister(ptp->clock);
|
||||
ptp->clock = NULL;
|
||||
}
|
||||
|
||||
kfree(ptp);
|
||||
edev->ptp = NULL;
|
||||
}
|
||||
|
||||
int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *info)
|
||||
{
|
||||
struct qede_ptp *ptp = edev->ptp;
|
||||
|
||||
if (!ptp)
|
||||
return -EIO;
|
||||
|
||||
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;
|
||||
|
||||
if (ptp->clock)
|
||||
info->phc_index = ptp_clock_index(ptp->clock);
|
||||
else
|
||||
info->phc_index = -1;
|
||||
|
||||
info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V1_L4_EVENT) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
|
||||
BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ);
|
||||
|
||||
info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Called during unload, to stop PTP-related stuff */
|
||||
void qede_ptp_stop(struct qede_dev *edev)
|
||||
{
|
||||
struct qede_ptp *ptp;
|
||||
|
||||
ptp = edev->ptp;
|
||||
if (!ptp)
|
||||
return;
|
||||
|
||||
/* Cancel PTP work queue. Should be done after the Tx queues are
|
||||
* drained to prevent additional scheduling.
|
||||
*/
|
||||
cancel_work_sync(&ptp->work);
|
||||
if (ptp->tx_skb) {
|
||||
dev_kfree_skb_any(ptp->tx_skb);
|
||||
ptp->tx_skb = NULL;
|
||||
}
|
||||
|
||||
/* Disable PTP in HW */
|
||||
spin_lock_bh(&ptp->lock);
|
||||
ptp->ops->disable(edev->cdev);
|
||||
spin_unlock_bh(&ptp->lock);
|
||||
}
|
||||
|
||||
int qede_ptp_register_phc(struct qede_dev *edev)
|
||||
{
|
||||
struct qede_ptp *ptp;
|
||||
|
||||
ptp = kzalloc(sizeof(*ptp), GFP_KERNEL);
|
||||
if (!ptp) {
|
||||
DP_INFO(edev, "Failed to allocate struct for PTP\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
ptp->edev = edev;
|
||||
ptp->ops = edev->ops->ptp;
|
||||
if (!ptp->ops) {
|
||||
kfree(ptp);
|
||||
edev->ptp = NULL;
|
||||
DP_ERR(edev, "PTP clock registeration failed\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
edev->ptp = ptp;
|
||||
|
||||
/* Fill the ptp_clock_info struct and register PTP clock */
|
||||
ptp->clock_info.owner = THIS_MODULE;
|
||||
snprintf(ptp->clock_info.name, 16, "%s", edev->ndev->name);
|
||||
ptp->clock_info.max_adj = QED_MAX_PHC_DRIFT_PPB;
|
||||
ptp->clock_info.n_alarm = 0;
|
||||
ptp->clock_info.n_ext_ts = 0;
|
||||
ptp->clock_info.n_per_out = 0;
|
||||
ptp->clock_info.pps = 0;
|
||||
ptp->clock_info.adjfreq = qede_ptp_adjfreq;
|
||||
ptp->clock_info.adjtime = qede_ptp_adjtime;
|
||||
ptp->clock_info.gettime64 = qede_ptp_gettime;
|
||||
ptp->clock_info.settime64 = qede_ptp_settime;
|
||||
ptp->clock_info.enable = qede_ptp_ancillary_feature_enable;
|
||||
|
||||
ptp->clock = ptp_clock_register(&ptp->clock_info, &edev->pdev->dev);
|
||||
if (IS_ERR(ptp->clock)) {
|
||||
ptp->clock = NULL;
|
||||
kfree(ptp);
|
||||
edev->ptp = NULL;
|
||||
DP_ERR(edev, "PTP clock registeration failed\n");
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb)
|
||||
{
|
||||
struct qede_ptp *ptp;
|
||||
|
||||
ptp = edev->ptp;
|
||||
if (!ptp)
|
||||
return;
|
||||
|
||||
if (unlikely(!(edev->flags & QEDE_TX_TIMESTAMPING_EN))) {
|
||||
DP_NOTICE(edev,
|
||||
"Tx timestamping was not enabled, this packet will not be timestamped\n");
|
||||
} else if (unlikely(ptp->tx_skb)) {
|
||||
DP_NOTICE(edev,
|
||||
"The device supports only a single outstanding packet to timestamp, this packet will not be timestamped\n");
|
||||
} else {
|
||||
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
|
||||
/* schedule check for Tx timestamp */
|
||||
ptp->tx_skb = skb_get(skb);
|
||||
schedule_work(&ptp->work);
|
||||
}
|
||||
}
|
||||
|
||||
void qede_ptp_rx_ts(struct qede_dev *edev, struct sk_buff *skb)
|
||||
{
|
||||
struct qede_ptp *ptp;
|
||||
u64 timestamp, ns;
|
||||
int rc;
|
||||
|
||||
ptp = edev->ptp;
|
||||
if (!ptp)
|
||||
return;
|
||||
|
||||
spin_lock_bh(&ptp->lock);
|
||||
rc = ptp->ops->read_rx_ts(edev->cdev, ×tamp);
|
||||
if (rc) {
|
||||
spin_unlock_bh(&ptp->lock);
|
||||
DP_INFO(edev, "Invalid Rx timestamp\n");
|
||||
return;
|
||||
}
|
||||
|
||||
ns = timecounter_cyc2time(&ptp->tc, timestamp);
|
||||
spin_unlock_bh(&ptp->lock);
|
||||
skb_hwtstamps(skb)->hwtstamp = ns_to_ktime(ns);
|
||||
DP_VERBOSE(edev, QED_MSG_DEBUG,
|
||||
"Rx timestamp, timestamp cycles = %llu, ns = %llu\n",
|
||||
timestamp, ns);
|
||||
}
|
65
drivers/net/ethernet/qlogic/qede/qede_ptp.h
Normal file
65
drivers/net/ethernet/qlogic/qede/qede_ptp.h
Normal file
@ -0,0 +1,65 @@
|
||||
/* QLogic qede NIC Driver
|
||||
* Copyright (c) 2015-2017 QLogic Corporation
|
||||
*
|
||||
* This software is available to you under a choice of one of two
|
||||
* licenses. You may choose to be licensed under the terms of the GNU
|
||||
* General Public License (GPL) Version 2, available from the file
|
||||
* COPYING in the main directory of this source tree, or the
|
||||
* OpenIB.org BSD license below:
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* - Redistributions of source code must retain the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer.
|
||||
*
|
||||
* - Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and /or other materials
|
||||
* provided with the distribution.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _QEDE_PTP_H_
|
||||
#define _QEDE_PTP_H_
|
||||
|
||||
#include <linux/ptp_clock_kernel.h>
|
||||
#include <linux/net_tstamp.h>
|
||||
#include <linux/timecounter.h>
|
||||
#include "qede.h"
|
||||
|
||||
void qede_ptp_rx_ts(struct qede_dev *edev, struct sk_buff *skb);
|
||||
void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb);
|
||||
int qede_ptp_hw_ts(struct qede_dev *edev, struct ifreq *req);
|
||||
void qede_ptp_start(struct qede_dev *edev, bool init_tc);
|
||||
void qede_ptp_stop(struct qede_dev *edev);
|
||||
void qede_ptp_remove(struct qede_dev *edev);
|
||||
int qede_ptp_register_phc(struct qede_dev *edev);
|
||||
int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *ts);
|
||||
|
||||
static inline void qede_ptp_record_rx_ts(struct qede_dev *edev,
|
||||
union eth_rx_cqe *cqe,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
/* Check if this packet was timestamped */
|
||||
if (unlikely(le16_to_cpu(cqe->fast_path_regular.pars_flags.flags) &
|
||||
(1 << PARSING_AND_ERR_FLAGS_TIMESTAMPRECORDED_SHIFT))) {
|
||||
if (likely(le16_to_cpu(cqe->fast_path_regular.pars_flags.flags)
|
||||
& (1 << PARSING_AND_ERR_FLAGS_TIMESYNCPKT_SHIFT))) {
|
||||
qede_ptp_rx_ts(edev, skb);
|
||||
} else {
|
||||
DP_INFO(edev,
|
||||
"Timestamp recorded for non PTP packets\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif /* _QEDE_PTP_H_ */
|
Loading…
Reference in New Issue
Block a user