drivers/net/octeontx2/otx2_link.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <rte_common.h>
   6 #include <rte_ethdev_pci.h>
   7
   8 #include "otx2_ethdev.h"
   9
  10 void
  11 otx2_nix_toggle_flag_link_cfg(struct otx2_eth_dev *dev, bool set)
  12 {
  13         if (set)
  14                 dev->flags |= OTX2_LINK_CFG_IN_PROGRESS_F;
  15         else
  16                 dev->flags &= ~OTX2_LINK_CFG_IN_PROGRESS_F;
  17
  18         rte_wmb();
  19 }
  20
  21 static inline int
  22 nix_wait_for_link_cfg(struct otx2_eth_dev *dev)
  23 {
  24         uint16_t wait = 1000;
  25
  26         do {
  27                 rte_rmb();
  28                 if (!(dev->flags & OTX2_LINK_CFG_IN_PROGRESS_F))
  29                         break;
  30                 wait--;
  31                 rte_delay_ms(1);
  32         } while (wait);
  33
  34         return wait ? 0 : -1;
  35 }
  36
  37 static void
  38 nix_link_status_print(struct rte_eth_dev *eth_dev, struct rte_eth_link *link)
  39 {
  40         if (link && link->link_status)
  41                 otx2_info("Port %d: Link Up - speed %u Mbps - %s",
  42                           (int)(eth_dev->data->port_id),
  43                           (uint32_t)link->link_speed,
  44                           link->link_duplex == ETH_LINK_FULL_DUPLEX ?
  45                           "full-duplex" : "half-duplex");
  46         else
  47                 otx2_info("Port %d: Link Down", (int)(eth_dev->data->port_id));
  48 }
  49
  50 void
  51 otx2_eth_dev_link_status_update(struct otx2_dev *dev,
  52                                 struct cgx_link_user_info *link)
  53 {
  54         struct otx2_eth_dev *otx2_dev = (struct otx2_eth_dev *)dev;
  55         struct rte_eth_dev *eth_dev = otx2_dev->eth_dev;
  56         struct rte_eth_link eth_link;
  57
  58         if (!link || !dev || !eth_dev->data->dev_conf.intr_conf.lsc)
  59                 return;
  60
  61         if (nix_wait_for_link_cfg(otx2_dev)) {
  62                 otx2_err("Timeout waiting for link_cfg to complete");
  63                 return;
  64         }
  65
  66         eth_link.link_status = link->link_up;
  67         eth_link.link_speed = link->speed;
  68         eth_link.link_autoneg = ETH_LINK_AUTONEG;
  69         eth_link.link_duplex = link->full_duplex;
  70
  71         /* Print link info */
  72         nix_link_status_print(eth_dev, &eth_link);
  73
  74         /* Update link info */
  75         rte_eth_linkstatus_set(eth_dev, &eth_link);
  76
  77         /* Set the flag and execute application callbacks */
  78         _rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
  79 }
  80
  81 int
  82 otx2_nix_link_update(struct rte_eth_dev *eth_dev, int wait_to_complete)
  83 {
  84         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
  85         struct otx2_mbox *mbox = dev->mbox;
  86         struct cgx_link_info_msg *rsp;
  87         struct rte_eth_link link;
  88         int rc;
  89
  90         RTE_SET_USED(wait_to_complete);
  91
  92         if (otx2_dev_is_lbk(dev))
  93                 return 0;
  94
  95         otx2_mbox_alloc_msg_cgx_get_linkinfo(mbox);
  96         rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
  97         if (rc)
  98                 return rc;
  99
 100         link.link_status = rsp->link_info.link_up;
 101         link.link_speed = rsp->link_info.speed;
 102         link.link_autoneg = ETH_LINK_AUTONEG;
 103
 104         if (rsp->link_info.full_duplex)
 105                 link.link_duplex = rsp->link_info.full_duplex;
 106
 107         return rte_eth_linkstatus_set(eth_dev, &link);
 108 }