drivers/net/ethernet/tehuti/tn40_phy.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /* Copyright (c) Tehuti Networks Ltd. */
   3
   4 #include <linux/netdevice.h>
   5 #include <linux/pci.h>
   6 #include <linux/phylink.h>
   7
   8 #include "tn40.h"
   9
  10 static struct tn40_priv *tn40_config_to_priv(struct phylink_config *config)
  11 {
  12         return container_of(config, struct tn40_priv, phylink_config);
  13 }
  14
  15 static void tn40_link_up(struct phylink_config *config, struct phy_device *phy,
  16                          unsigned int mode, phy_interface_t interface,
  17                          int speed, int duplex, bool tx_pause, bool rx_pause)
  18 {
  19         struct tn40_priv *priv = tn40_config_to_priv(config);
  20
  21         tn40_set_link_speed(priv, speed);
  22         netif_wake_queue(priv->ndev);
  23 }
  24
  25 static void tn40_link_down(struct phylink_config *config, unsigned int mode,
  26                            phy_interface_t interface)
  27 {
  28         struct tn40_priv *priv = tn40_config_to_priv(config);
  29
  30         netif_stop_queue(priv->ndev);
  31         tn40_set_link_speed(priv, 0);
  32 }
  33
  34 static void tn40_mac_config(struct phylink_config *config, unsigned int mode,
  35                             const struct phylink_link_state *state)
  36 {
  37 }
  38
  39 static const struct phylink_mac_ops tn40_mac_ops = {
  40         .mac_config = tn40_mac_config,
  41         .mac_link_up = tn40_link_up,
  42         .mac_link_down = tn40_link_down,
  43 };
  44
  45 int tn40_phy_register(struct tn40_priv *priv)
  46 {
  47         struct phylink_config *config;
  48         struct phy_device *phydev;
  49         struct phylink *phylink;
  50
  51         phydev = phy_find_first(priv->mdio);
  52         if (!phydev) {
  53                 dev_err(&priv->pdev->dev, "PHY isn't found\n");
  54                 return -ENODEV;
  55         }
  56
  57         config = &priv->phylink_config;
  58         config->dev = &priv->ndev->dev;
  59         config->type = PHYLINK_NETDEV;
  60         config->mac_capabilities = MAC_10000FD;
  61         __set_bit(PHY_INTERFACE_MODE_XAUI, config->supported_interfaces);
  62
  63         phylink = phylink_create(config, NULL, PHY_INTERFACE_MODE_XAUI,
  64                                  &tn40_mac_ops);
  65         if (IS_ERR(phylink))
  66                 return PTR_ERR(phylink);
  67
  68         priv->phydev = phydev;
  69         priv->phylink = phylink;
  70         return 0;
  71 }
  72
  73 void tn40_phy_unregister(struct tn40_priv *priv)
  74 {
  75         phylink_destroy(priv->phylink);
  76 }