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
23struct 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
30static 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
45static 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
57static 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		cmd->supported = SUPPORTED_1000baseT_Full |
69				 SUPPORTED_Autoneg | SUPPORTED_MII;
70		cmd->advertising = cmd->supported;
71		ethtool_cmd_speed_set(cmd, SPEED_1000);
72		cmd->duplex = DUPLEX_FULL;
73		cmd->port = PORT_MII;
74		cmd->transceiver = XCVR_INTERNAL;
75		cmd->autoneg = AUTONEG_ENABLE;
76	} else {
77		cmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE;
78		cmd->advertising = cmd->supported;
79		ethtool_cmd_speed_set(cmd, SPEED_10000);
80		cmd->duplex = DUPLEX_FULL;
81		cmd->port = PORT_FIBRE;
82		cmd->transceiver = XCVR_INTERNAL;
83		cmd->autoneg = AUTONEG_DISABLE;
84	}
85
86	return 0;
87}
88
89static int xgene_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd)
90{
91	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
92	struct phy_device *phydev = pdata->phy_dev;
93
94	if (pdata->phy_mode == PHY_INTERFACE_MODE_RGMII) {
95		if (phydev == NULL)
96			return -ENODEV;
97
98		return phy_ethtool_sset(phydev, cmd);
99	}
100
101	return -EINVAL;
102}
103
104static void xgene_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
105{
106	int i;
107	u8 *p = data;
108
109	if (stringset != ETH_SS_STATS)
110		return;
111
112	for (i = 0; i < XGENE_STATS_LEN; i++) {
113		memcpy(p, gstrings_stats[i].name, ETH_GSTRING_LEN);
114		p += ETH_GSTRING_LEN;
115	}
116}
117
118static int xgene_get_sset_count(struct net_device *ndev, int sset)
119{
120	if (sset != ETH_SS_STATS)
121		return -EINVAL;
122
123	return XGENE_STATS_LEN;
124}
125
126static void xgene_get_ethtool_stats(struct net_device *ndev,
127				    struct ethtool_stats *dummy,
128				    u64 *data)
129{
130	void *pdata = netdev_priv(ndev);
131	int i;
132
133	for (i = 0; i < XGENE_STATS_LEN; i++)
134		*data++ = *(u64 *)(pdata + gstrings_stats[i].offset);
135}
136
137static const struct ethtool_ops xgene_ethtool_ops = {
138	.get_drvinfo = xgene_get_drvinfo,
139	.get_settings = xgene_get_settings,
140	.set_settings = xgene_set_settings,
141	.get_link = ethtool_op_get_link,
142	.get_strings = xgene_get_strings,
143	.get_sset_count = xgene_get_sset_count,
144	.get_ethtool_stats = xgene_get_ethtool_stats
145};
146
147void xgene_enet_set_ethtool_ops(struct net_device *ndev)
148{
149	ndev->ethtool_ops = &xgene_ethtool_ops;
150}
151