1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * DPAA2 Ethernet Switch ethtool support
4 *
5 * Copyright 2014-2016 Freescale Semiconductor Inc.
6 * Copyright 2017-2018 NXP
7 *
8 */
9
10 #include <linux/ethtool.h>
11
12 #include "dpaa2-switch.h"
13
14 static struct {
15 enum dpsw_counter id;
16 char name[ETH_GSTRING_LEN];
17 } dpaa2_switch_ethtool_counters[] = {
18 {DPSW_CNT_ING_FRAME, "[hw] rx frames"},
19 {DPSW_CNT_ING_BYTE, "[hw] rx bytes"},
20 {DPSW_CNT_ING_FLTR_FRAME, "[hw] rx filtered frames"},
21 {DPSW_CNT_ING_FRAME_DISCARD, "[hw] rx discarded frames"},
22 {DPSW_CNT_ING_BCAST_FRAME, "[hw] rx bcast frames"},
23 {DPSW_CNT_ING_BCAST_BYTES, "[hw] rx bcast bytes"},
24 {DPSW_CNT_ING_MCAST_FRAME, "[hw] rx mcast frames"},
25 {DPSW_CNT_ING_MCAST_BYTE, "[hw] rx mcast bytes"},
26 {DPSW_CNT_EGR_FRAME, "[hw] tx frames"},
27 {DPSW_CNT_EGR_BYTE, "[hw] tx bytes"},
28 {DPSW_CNT_EGR_FRAME_DISCARD, "[hw] tx discarded frames"},
29 {DPSW_CNT_ING_NO_BUFF_DISCARD, "[hw] rx nobuffer discards"},
30 };
31
32 #define DPAA2_SWITCH_NUM_COUNTERS ARRAY_SIZE(dpaa2_switch_ethtool_counters)
33
dpaa2_switch_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)34 static void dpaa2_switch_get_drvinfo(struct net_device *netdev,
35 struct ethtool_drvinfo *drvinfo)
36 {
37 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
38 u16 version_major, version_minor;
39 int err;
40
41 strscpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
42
43 err = dpsw_get_api_version(port_priv->ethsw_data->mc_io, 0,
44 &version_major,
45 &version_minor);
46 if (err)
47 strscpy(drvinfo->fw_version, "N/A",
48 sizeof(drvinfo->fw_version));
49 else
50 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
51 "%u.%u", version_major, version_minor);
52
53 strscpy(drvinfo->bus_info, dev_name(netdev->dev.parent->parent),
54 sizeof(drvinfo->bus_info));
55 }
56
57 static int
dpaa2_switch_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * link_ksettings)58 dpaa2_switch_get_link_ksettings(struct net_device *netdev,
59 struct ethtool_link_ksettings *link_ksettings)
60 {
61 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
62 struct dpsw_link_state state = {0};
63 int err;
64
65 mutex_lock(&port_priv->mac_lock);
66
67 if (dpaa2_switch_port_is_type_phy(port_priv)) {
68 err = phylink_ethtool_ksettings_get(port_priv->mac->phylink,
69 link_ksettings);
70 mutex_unlock(&port_priv->mac_lock);
71 return err;
72 }
73
74 mutex_unlock(&port_priv->mac_lock);
75
76 err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
77 port_priv->ethsw_data->dpsw_handle,
78 port_priv->idx,
79 &state);
80 if (err) {
81 netdev_err(netdev, "ERROR %d getting link state\n", err);
82 goto out;
83 }
84
85 /* At the moment, we have no way of interrogating the DPMAC
86 * from the DPSW side or there may not exist a DPMAC at all.
87 * Report only autoneg state, duplexity and speed.
88 */
89 if (state.options & DPSW_LINK_OPT_AUTONEG)
90 link_ksettings->base.autoneg = AUTONEG_ENABLE;
91 if (!(state.options & DPSW_LINK_OPT_HALF_DUPLEX))
92 link_ksettings->base.duplex = DUPLEX_FULL;
93 link_ksettings->base.speed = state.rate;
94
95 out:
96 return err;
97 }
98
99 static int
dpaa2_switch_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * link_ksettings)100 dpaa2_switch_set_link_ksettings(struct net_device *netdev,
101 const struct ethtool_link_ksettings *link_ksettings)
102 {
103 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
104 struct ethsw_core *ethsw = port_priv->ethsw_data;
105 struct dpsw_link_cfg cfg = {0};
106 bool if_running;
107 int err = 0, ret;
108
109 mutex_lock(&port_priv->mac_lock);
110
111 if (dpaa2_switch_port_is_type_phy(port_priv)) {
112 err = phylink_ethtool_ksettings_set(port_priv->mac->phylink,
113 link_ksettings);
114 mutex_unlock(&port_priv->mac_lock);
115 return err;
116 }
117
118 mutex_unlock(&port_priv->mac_lock);
119
120 /* Interface needs to be down to change link settings */
121 if_running = netif_running(netdev);
122 if (if_running) {
123 err = dpsw_if_disable(ethsw->mc_io, 0,
124 ethsw->dpsw_handle,
125 port_priv->idx);
126 if (err) {
127 netdev_err(netdev, "dpsw_if_disable err %d\n", err);
128 return err;
129 }
130 }
131
132 cfg.rate = link_ksettings->base.speed;
133 if (link_ksettings->base.autoneg == AUTONEG_ENABLE)
134 cfg.options |= DPSW_LINK_OPT_AUTONEG;
135 else
136 cfg.options &= ~DPSW_LINK_OPT_AUTONEG;
137 if (link_ksettings->base.duplex == DUPLEX_HALF)
138 cfg.options |= DPSW_LINK_OPT_HALF_DUPLEX;
139 else
140 cfg.options &= ~DPSW_LINK_OPT_HALF_DUPLEX;
141
142 err = dpsw_if_set_link_cfg(port_priv->ethsw_data->mc_io, 0,
143 port_priv->ethsw_data->dpsw_handle,
144 port_priv->idx,
145 &cfg);
146
147 if (if_running) {
148 ret = dpsw_if_enable(ethsw->mc_io, 0,
149 ethsw->dpsw_handle,
150 port_priv->idx);
151 if (ret) {
152 netdev_err(netdev, "dpsw_if_enable err %d\n", ret);
153 return ret;
154 }
155 }
156 return err;
157 }
158
159 static int
dpaa2_switch_ethtool_get_sset_count(struct net_device * netdev,int sset)160 dpaa2_switch_ethtool_get_sset_count(struct net_device *netdev, int sset)
161 {
162 switch (sset) {
163 case ETH_SS_STATS:
164 return DPAA2_SWITCH_NUM_COUNTERS + dpaa2_mac_get_sset_count();
165 default:
166 return -EOPNOTSUPP;
167 }
168 }
169
dpaa2_switch_ethtool_get_strings(struct net_device * netdev,u32 stringset,u8 * data)170 static void dpaa2_switch_ethtool_get_strings(struct net_device *netdev,
171 u32 stringset, u8 *data)
172 {
173 u8 *p = data;
174 int i;
175
176 switch (stringset) {
177 case ETH_SS_STATS:
178 for (i = 0; i < DPAA2_SWITCH_NUM_COUNTERS; i++) {
179 memcpy(p, dpaa2_switch_ethtool_counters[i].name,
180 ETH_GSTRING_LEN);
181 p += ETH_GSTRING_LEN;
182 }
183 dpaa2_mac_get_strings(p);
184 break;
185 }
186 }
187
dpaa2_switch_ethtool_get_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)188 static void dpaa2_switch_ethtool_get_stats(struct net_device *netdev,
189 struct ethtool_stats *stats,
190 u64 *data)
191 {
192 struct ethsw_port_priv *port_priv = netdev_priv(netdev);
193 int i, err;
194
195 for (i = 0; i < DPAA2_SWITCH_NUM_COUNTERS; i++) {
196 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
197 port_priv->ethsw_data->dpsw_handle,
198 port_priv->idx,
199 dpaa2_switch_ethtool_counters[i].id,
200 &data[i]);
201 if (err)
202 netdev_err(netdev, "dpsw_if_get_counter[%s] err %d\n",
203 dpaa2_switch_ethtool_counters[i].name, err);
204 }
205
206 mutex_lock(&port_priv->mac_lock);
207
208 if (dpaa2_switch_port_has_mac(port_priv))
209 dpaa2_mac_get_ethtool_stats(port_priv->mac, data + i);
210
211 mutex_unlock(&port_priv->mac_lock);
212 }
213
214 const struct ethtool_ops dpaa2_switch_port_ethtool_ops = {
215 .get_drvinfo = dpaa2_switch_get_drvinfo,
216 .get_link = ethtool_op_get_link,
217 .get_link_ksettings = dpaa2_switch_get_link_ksettings,
218 .set_link_ksettings = dpaa2_switch_set_link_ksettings,
219 .get_strings = dpaa2_switch_ethtool_get_strings,
220 .get_ethtool_stats = dpaa2_switch_ethtool_get_stats,
221 .get_sset_count = dpaa2_switch_ethtool_get_sset_count,
222 };
223