1 // SPDX-License-Identifier: GPL-2.0+
2
3 #include <linux/module.h>
4 #include <linux/phylink.h>
5 #include <linux/device.h>
6 #include <linux/netdevice.h>
7 #include <linux/phy/phy.h>
8 #include <linux/sfp.h>
9
10 #include "lan966x_main.h"
11
lan966x_phylink_mac_select(struct phylink_config * config,phy_interface_t interface)12 static struct phylink_pcs *lan966x_phylink_mac_select(struct phylink_config *config,
13 phy_interface_t interface)
14 {
15 struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
16
17 return &port->phylink_pcs;
18 }
19
lan966x_phylink_mac_config(struct phylink_config * config,unsigned int mode,const struct phylink_link_state * state)20 static void lan966x_phylink_mac_config(struct phylink_config *config,
21 unsigned int mode,
22 const struct phylink_link_state *state)
23 {
24 }
25
lan966x_phylink_mac_prepare(struct phylink_config * config,unsigned int mode,phy_interface_t iface)26 static int lan966x_phylink_mac_prepare(struct phylink_config *config,
27 unsigned int mode,
28 phy_interface_t iface)
29 {
30 struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
31 int err;
32
33 if (port->serdes) {
34 err = phy_set_mode_ext(port->serdes, PHY_MODE_ETHERNET,
35 iface);
36 if (err) {
37 netdev_err(to_net_dev(config->dev),
38 "Could not set mode of SerDes\n");
39 return err;
40 }
41 }
42
43 return 0;
44 }
45
lan966x_phylink_mac_link_up(struct phylink_config * config,struct phy_device * phy,unsigned int mode,phy_interface_t interface,int speed,int duplex,bool tx_pause,bool rx_pause)46 static void lan966x_phylink_mac_link_up(struct phylink_config *config,
47 struct phy_device *phy,
48 unsigned int mode,
49 phy_interface_t interface,
50 int speed, int duplex,
51 bool tx_pause, bool rx_pause)
52 {
53 struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
54 struct lan966x_port_config *port_config = &port->config;
55
56 port_config->duplex = duplex;
57 port_config->speed = speed;
58 port_config->pause = 0;
59 port_config->pause |= tx_pause ? MLO_PAUSE_TX : 0;
60 port_config->pause |= rx_pause ? MLO_PAUSE_RX : 0;
61
62 lan966x_port_config_up(port);
63 }
64
lan966x_phylink_mac_link_down(struct phylink_config * config,unsigned int mode,phy_interface_t interface)65 static void lan966x_phylink_mac_link_down(struct phylink_config *config,
66 unsigned int mode,
67 phy_interface_t interface)
68 {
69 struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
70 struct lan966x *lan966x = port->lan966x;
71
72 lan966x_port_config_down(port);
73
74 /* Take PCS out of reset */
75 lan_rmw(DEV_CLOCK_CFG_PCS_RX_RST_SET(0) |
76 DEV_CLOCK_CFG_PCS_TX_RST_SET(0),
77 DEV_CLOCK_CFG_PCS_RX_RST |
78 DEV_CLOCK_CFG_PCS_TX_RST,
79 lan966x, DEV_CLOCK_CFG(port->chip_port));
80 }
81
lan966x_pcs_to_port(struct phylink_pcs * pcs)82 static struct lan966x_port *lan966x_pcs_to_port(struct phylink_pcs *pcs)
83 {
84 return container_of(pcs, struct lan966x_port, phylink_pcs);
85 }
86
lan966x_pcs_get_state(struct phylink_pcs * pcs,struct phylink_link_state * state)87 static void lan966x_pcs_get_state(struct phylink_pcs *pcs,
88 struct phylink_link_state *state)
89 {
90 struct lan966x_port *port = lan966x_pcs_to_port(pcs);
91
92 lan966x_port_status_get(port, state);
93 }
94
lan966x_pcs_config(struct phylink_pcs * pcs,unsigned int mode,phy_interface_t interface,const unsigned long * advertising,bool permit_pause_to_mac)95 static int lan966x_pcs_config(struct phylink_pcs *pcs,
96 unsigned int mode,
97 phy_interface_t interface,
98 const unsigned long *advertising,
99 bool permit_pause_to_mac)
100 {
101 struct lan966x_port *port = lan966x_pcs_to_port(pcs);
102 struct lan966x_port_config config;
103 int ret;
104
105 config = port->config;
106 config.portmode = interface;
107 config.inband = phylink_autoneg_inband(mode);
108 config.autoneg = phylink_test(advertising, Autoneg);
109 config.advertising = advertising;
110
111 ret = lan966x_port_pcs_set(port, &config);
112 if (ret)
113 netdev_err(port->dev, "port PCS config failed: %d\n", ret);
114
115 return ret;
116 }
117
lan966x_pcs_aneg_restart(struct phylink_pcs * pcs)118 static void lan966x_pcs_aneg_restart(struct phylink_pcs *pcs)
119 {
120 /* Currently not used */
121 }
122
123 const struct phylink_mac_ops lan966x_phylink_mac_ops = {
124 .validate = phylink_generic_validate,
125 .mac_select_pcs = lan966x_phylink_mac_select,
126 .mac_config = lan966x_phylink_mac_config,
127 .mac_prepare = lan966x_phylink_mac_prepare,
128 .mac_link_down = lan966x_phylink_mac_link_down,
129 .mac_link_up = lan966x_phylink_mac_link_up,
130 };
131
132 const struct phylink_pcs_ops lan966x_phylink_pcs_ops = {
133 .pcs_get_state = lan966x_pcs_get_state,
134 .pcs_config = lan966x_pcs_config,
135 .pcs_an_restart = lan966x_pcs_aneg_restart,
136 };
137