1 /* Applied Micro X-Gene SoC Ethernet Driver
2  *
3  * Copyright (c) 2014, Applied Micro Circuits Corporation
4  * Authors: Iyappan Subramanian <isubramanian@apm.com>
5  *
6  * This program is free software; you can redistribute  it and/or modify it
7  * under  the terms of  the GNU General  Public License as published by the
8  * Free Software Foundation;  either version 2 of the  License, or (at your
9  * option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #include <linux/ethtool.h>
21 #include "xgene_enet_main.h"
22 
23 struct xgene_gstrings_stats {
24 	char name[ETH_GSTRING_LEN];
25 	int offset;
26 };
27 
28 #define XGENE_STAT(m) { #m, offsetof(struct xgene_enet_pdata, stats.m) }
29 
30 static const struct xgene_gstrings_stats gstrings_stats[] = {
31 	XGENE_STAT(rx_packets),
32 	XGENE_STAT(tx_packets),
33 	XGENE_STAT(rx_bytes),
34 	XGENE_STAT(tx_bytes),
35 	XGENE_STAT(rx_errors),
36 	XGENE_STAT(tx_errors),
37 	XGENE_STAT(rx_length_errors),
38 	XGENE_STAT(rx_crc_errors),
39 	XGENE_STAT(rx_frame_errors),
40 	XGENE_STAT(rx_fifo_errors)
41 };
42 
43 #define XGENE_STATS_LEN		ARRAY_SIZE(gstrings_stats)
44 
45 static void xgene_get_drvinfo(struct net_device *ndev,
46 			      struct ethtool_drvinfo *info)
47 {
48 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
49 	struct platform_device *pdev = pdata->pdev;
50 
51 	strcpy(info->driver, "xgene_enet");
52 	strcpy(info->version, XGENE_DRV_VERSION);
53 	snprintf(info->fw_version, ETHTOOL_FWVERS_LEN, "N/A");
54 	sprintf(info->bus_info, "%s", pdev->name);
55 }
56 
57 static int xgene_get_settings(struct net_device *ndev, struct ethtool_cmd *cmd)
58 {
59 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
60 	struct phy_device *phydev = pdata->phy_dev;
61 
62 	if (pdata->phy_mode == PHY_INTERFACE_MODE_RGMII) {
63 		if (phydev == NULL)
64 			return -ENODEV;
65 
66 		return phy_ethtool_gset(phydev, cmd);
67 	} else if (pdata->phy_mode == PHY_INTERFACE_MODE_SGMII) {
68 		if (pdata->mdio_driver) {
69 			if (!phydev)
70 				return -ENODEV;
71 
72 			return phy_ethtool_gset(phydev, cmd);
73 		}
74 
75 		cmd->supported = SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
76 				 SUPPORTED_MII;
77 		cmd->advertising = cmd->supported;
78 		ethtool_cmd_speed_set(cmd, SPEED_1000);
79 		cmd->duplex = DUPLEX_FULL;
80 		cmd->port = PORT_MII;
81 		cmd->transceiver = XCVR_INTERNAL;
82 		cmd->autoneg = AUTONEG_ENABLE;
83 	} else {
84 		cmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE;
85 		cmd->advertising = cmd->supported;
86 		ethtool_cmd_speed_set(cmd, SPEED_10000);
87 		cmd->duplex = DUPLEX_FULL;
88 		cmd->port = PORT_FIBRE;
89 		cmd->transceiver = XCVR_INTERNAL;
90 		cmd->autoneg = AUTONEG_DISABLE;
91 	}
92 
93 	return 0;
94 }
95 
96 static int xgene_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd)
97 {
98 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
99 	struct phy_device *phydev = pdata->phy_dev;
100 
101 	if (pdata->phy_mode == PHY_INTERFACE_MODE_RGMII) {
102 		if (!phydev)
103 			return -ENODEV;
104 
105 		return phy_ethtool_sset(phydev, cmd);
106 	}
107 
108 	if (pdata->phy_mode == PHY_INTERFACE_MODE_SGMII) {
109 		if (pdata->mdio_driver) {
110 			if (!phydev)
111 				return -ENODEV;
112 
113 			return phy_ethtool_sset(phydev, cmd);
114 		}
115 	}
116 
117 	return -EINVAL;
118 }
119 
120 static void xgene_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
121 {
122 	int i;
123 	u8 *p = data;
124 
125 	if (stringset != ETH_SS_STATS)
126 		return;
127 
128 	for (i = 0; i < XGENE_STATS_LEN; i++) {
129 		memcpy(p, gstrings_stats[i].name, ETH_GSTRING_LEN);
130 		p += ETH_GSTRING_LEN;
131 	}
132 }
133 
134 static int xgene_get_sset_count(struct net_device *ndev, int sset)
135 {
136 	if (sset != ETH_SS_STATS)
137 		return -EINVAL;
138 
139 	return XGENE_STATS_LEN;
140 }
141 
142 static void xgene_get_ethtool_stats(struct net_device *ndev,
143 				    struct ethtool_stats *dummy,
144 				    u64 *data)
145 {
146 	void *pdata = netdev_priv(ndev);
147 	int i;
148 
149 	for (i = 0; i < XGENE_STATS_LEN; i++)
150 		*data++ = *(u64 *)(pdata + gstrings_stats[i].offset);
151 }
152 
153 static const struct ethtool_ops xgene_ethtool_ops = {
154 	.get_drvinfo = xgene_get_drvinfo,
155 	.get_settings = xgene_get_settings,
156 	.set_settings = xgene_set_settings,
157 	.get_link = ethtool_op_get_link,
158 	.get_strings = xgene_get_strings,
159 	.get_sset_count = xgene_get_sset_count,
160 	.get_ethtool_stats = xgene_get_ethtool_stats
161 };
162 
163 void xgene_enet_set_ethtool_ops(struct net_device *ndev)
164 {
165 	ndev->ethtool_ops = &xgene_ethtool_ops;
166 }
167