1 /*
2  * Applied Micro X-Gene SoC Ethernet v2 Driver
3  *
4  * Copyright (c) 2017, Applied Micro Circuits Corporation
5  * Author(s): Iyappan Subramanian <isubramanian@apm.com>
6  *	      Keyur Chudgar <kchudgar@apm.com>
7  *
8  * This program is free software; you can redistribute  it and/or modify it
9  * under  the terms of  the GNU General  Public License as published by the
10  * Free Software Foundation;  either version 2 of the  License, or (at your
11  * option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
20  */
21 
22 #include "main.h"
23 
24 struct xge_gstrings_stats {
25 	char name[ETH_GSTRING_LEN];
26 	int offset;
27 };
28 
29 #define XGE_STAT(m)		{ #m, offsetof(struct xge_pdata, stats.m) }
30 
31 static const struct xge_gstrings_stats gstrings_stats[] = {
32 	XGE_STAT(rx_packets),
33 	XGE_STAT(tx_packets),
34 	XGE_STAT(rx_bytes),
35 	XGE_STAT(tx_bytes),
36 	XGE_STAT(rx_errors)
37 };
38 
39 #define XGE_STATS_LEN		ARRAY_SIZE(gstrings_stats)
40 
41 static void xge_get_drvinfo(struct net_device *ndev,
42 			    struct ethtool_drvinfo *info)
43 {
44 	struct xge_pdata *pdata = netdev_priv(ndev);
45 	struct platform_device *pdev = pdata->pdev;
46 
47 	strcpy(info->driver, "xgene-enet-v2");
48 	strcpy(info->version, XGENE_ENET_V2_VERSION);
49 	snprintf(info->fw_version, ETHTOOL_FWVERS_LEN, "N/A");
50 	sprintf(info->bus_info, "%s", pdev->name);
51 }
52 
53 static void xge_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
54 {
55 	u8 *p = data;
56 	int i;
57 
58 	if (stringset != ETH_SS_STATS)
59 		return;
60 
61 	for (i = 0; i < XGE_STATS_LEN; i++) {
62 		memcpy(p, gstrings_stats[i].name, ETH_GSTRING_LEN);
63 		p += ETH_GSTRING_LEN;
64 	}
65 }
66 
67 static int xge_get_sset_count(struct net_device *ndev, int sset)
68 {
69 	if (sset != ETH_SS_STATS)
70 		return -EINVAL;
71 
72 	return XGE_STATS_LEN;
73 }
74 
75 static void xge_get_ethtool_stats(struct net_device *ndev,
76 				  struct ethtool_stats *dummy,
77 				  u64 *data)
78 {
79 	void *pdata = netdev_priv(ndev);
80 	int i;
81 
82 	for (i = 0; i < XGE_STATS_LEN; i++)
83 		*data++ = *(u64 *)(pdata + gstrings_stats[i].offset);
84 }
85 
86 static int xge_get_link_ksettings(struct net_device *ndev,
87 				  struct ethtool_link_ksettings *cmd)
88 {
89 	struct phy_device *phydev = ndev->phydev;
90 
91 	if (!phydev)
92 		return -ENODEV;
93 
94 	return phy_ethtool_ksettings_get(phydev, cmd);
95 }
96 
97 static int xge_set_link_ksettings(struct net_device *ndev,
98 				  const struct ethtool_link_ksettings *cmd)
99 {
100 	struct phy_device *phydev = ndev->phydev;
101 
102 	if (!phydev)
103 		return -ENODEV;
104 
105 	return phy_ethtool_ksettings_set(phydev, cmd);
106 }
107 
108 static const struct ethtool_ops xge_ethtool_ops = {
109 	.get_drvinfo = xge_get_drvinfo,
110 	.get_link = ethtool_op_get_link,
111 	.get_strings = xge_get_strings,
112 	.get_sset_count = xge_get_sset_count,
113 	.get_ethtool_stats = xge_get_ethtool_stats,
114 	.get_link_ksettings = xge_get_link_ksettings,
115 	.set_link_ksettings = xge_set_link_ksettings,
116 };
117 
118 void xge_set_ethtool_ops(struct net_device *ndev)
119 {
120 	ndev->ethtool_ops = &xge_ethtool_ops;
121 }
122