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
10static struct tn40_priv *tn40_config_to_priv(struct phylink_config *config)
11{
12	return container_of(config, struct tn40_priv, phylink_config);
13}
14
15static 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
25static 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
34static void tn40_mac_config(struct phylink_config *config, unsigned int mode,
35			    const struct phylink_link_state *state)
36{
37}
38
39static 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
45int 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
73void tn40_phy_unregister(struct tn40_priv *priv)
74{
75	phylink_destroy(priv->phylink);
76}