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 (phydev == NULL)
63 		return -ENODEV;
64 
65 	return phy_ethtool_gset(phydev, cmd);
66 }
67 
68 static int xgene_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd)
69 {
70 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
71 	struct phy_device *phydev = pdata->phy_dev;
72 
73 	if (phydev == NULL)
74 		return -ENODEV;
75 
76 	return phy_ethtool_sset(phydev, cmd);
77 }
78 
79 static void xgene_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
80 {
81 	int i;
82 	u8 *p = data;
83 
84 	if (stringset != ETH_SS_STATS)
85 		return;
86 
87 	for (i = 0; i < XGENE_STATS_LEN; i++) {
88 		memcpy(p, gstrings_stats[i].name, ETH_GSTRING_LEN);
89 		p += ETH_GSTRING_LEN;
90 	}
91 }
92 
93 static int xgene_get_sset_count(struct net_device *ndev, int sset)
94 {
95 	if (sset != ETH_SS_STATS)
96 		return -EINVAL;
97 
98 	return XGENE_STATS_LEN;
99 }
100 
101 static void xgene_get_ethtool_stats(struct net_device *ndev,
102 				    struct ethtool_stats *dummy,
103 				    u64 *data)
104 {
105 	void *pdata = netdev_priv(ndev);
106 	int i;
107 
108 	for (i = 0; i < XGENE_STATS_LEN; i++)
109 		*data++ = *(u64 *)(pdata + gstrings_stats[i].offset);
110 }
111 
112 static const struct ethtool_ops xgene_ethtool_ops = {
113 	.get_drvinfo = xgene_get_drvinfo,
114 	.get_settings = xgene_get_settings,
115 	.set_settings = xgene_set_settings,
116 	.get_link = ethtool_op_get_link,
117 	.get_strings = xgene_get_strings,
118 	.get_sset_count = xgene_get_sset_count,
119 	.get_ethtool_stats = xgene_get_ethtool_stats
120 };
121 
122 void xgene_enet_set_ethtool_ops(struct net_device *ndev)
123 {
124 	ndev->ethtool_ops = &xgene_ethtool_ops;
125 }
126