1// SPDX-License-Identifier: GPL-2.0
2/* Texas Instruments ICSSG Ethernet driver
3 *
4 * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
5 *
6 */
7
8#include "icssg_prueth.h"
9#include "icssg_stats.h"
10
11static void emac_get_drvinfo(struct net_device *ndev,
12			     struct ethtool_drvinfo *info)
13{
14	struct prueth_emac *emac = netdev_priv(ndev);
15	struct prueth *prueth = emac->prueth;
16
17	strscpy(info->driver, dev_driver_string(prueth->dev),
18		sizeof(info->driver));
19	strscpy(info->bus_info, dev_name(prueth->dev), sizeof(info->bus_info));
20}
21
22static u32 emac_get_msglevel(struct net_device *ndev)
23{
24	struct prueth_emac *emac = netdev_priv(ndev);
25
26	return emac->msg_enable;
27}
28
29static void emac_set_msglevel(struct net_device *ndev, u32 value)
30{
31	struct prueth_emac *emac = netdev_priv(ndev);
32
33	emac->msg_enable = value;
34}
35
36static int emac_get_link_ksettings(struct net_device *ndev,
37				   struct ethtool_link_ksettings *ecmd)
38{
39	return phy_ethtool_get_link_ksettings(ndev, ecmd);
40}
41
42static int emac_set_link_ksettings(struct net_device *ndev,
43				   const struct ethtool_link_ksettings *ecmd)
44{
45	return phy_ethtool_set_link_ksettings(ndev, ecmd);
46}
47
48static int emac_get_eee(struct net_device *ndev, struct ethtool_keee *edata)
49{
50	if (!ndev->phydev)
51		return -EOPNOTSUPP;
52
53	return phy_ethtool_get_eee(ndev->phydev, edata);
54}
55
56static int emac_set_eee(struct net_device *ndev, struct ethtool_keee *edata)
57{
58	if (!ndev->phydev)
59		return -EOPNOTSUPP;
60
61	return phy_ethtool_set_eee(ndev->phydev, edata);
62}
63
64static int emac_nway_reset(struct net_device *ndev)
65{
66	return phy_ethtool_nway_reset(ndev);
67}
68
69static int emac_get_sset_count(struct net_device *ndev, int stringset)
70{
71	switch (stringset) {
72	case ETH_SS_STATS:
73		return ICSSG_NUM_ETHTOOL_STATS;
74	default:
75		return -EOPNOTSUPP;
76	}
77}
78
79static void emac_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
80{
81	u8 *p = data;
82	int i;
83
84	switch (stringset) {
85	case ETH_SS_STATS:
86		for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++) {
87			if (!icssg_all_stats[i].standard_stats) {
88				memcpy(p, icssg_all_stats[i].name,
89				       ETH_GSTRING_LEN);
90				p += ETH_GSTRING_LEN;
91			}
92		}
93		break;
94	default:
95		break;
96	}
97}
98
99static void emac_get_ethtool_stats(struct net_device *ndev,
100				   struct ethtool_stats *stats, u64 *data)
101{
102	struct prueth_emac *emac = netdev_priv(ndev);
103	int i;
104
105	emac_update_hardware_stats(emac);
106
107	for (i = 0; i < ARRAY_SIZE(icssg_all_stats); i++)
108		if (!icssg_all_stats[i].standard_stats)
109			*(data++) = emac->stats[i];
110}
111
112static int emac_get_ts_info(struct net_device *ndev,
113			    struct ethtool_ts_info *info)
114{
115	struct prueth_emac *emac = netdev_priv(ndev);
116
117	info->so_timestamping =
118		SOF_TIMESTAMPING_TX_HARDWARE |
119		SOF_TIMESTAMPING_TX_SOFTWARE |
120		SOF_TIMESTAMPING_RX_HARDWARE |
121		SOF_TIMESTAMPING_RX_SOFTWARE |
122		SOF_TIMESTAMPING_SOFTWARE |
123		SOF_TIMESTAMPING_RAW_HARDWARE;
124
125	info->phc_index = icss_iep_get_ptp_clock_idx(emac->iep);
126	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
127	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL);
128
129	return 0;
130}
131
132static int emac_set_channels(struct net_device *ndev,
133			     struct ethtool_channels *ch)
134{
135	struct prueth_emac *emac = netdev_priv(ndev);
136
137	/* Check if interface is up. Can change the num queues when
138	 * the interface is down.
139	 */
140	if (netif_running(emac->ndev))
141		return -EBUSY;
142
143	emac->tx_ch_num = ch->tx_count;
144
145	return 0;
146}
147
148static void emac_get_channels(struct net_device *ndev,
149			      struct ethtool_channels *ch)
150{
151	struct prueth_emac *emac = netdev_priv(ndev);
152
153	ch->max_rx = 1;
154	ch->max_tx = PRUETH_MAX_TX_QUEUES;
155	ch->rx_count = 1;
156	ch->tx_count = emac->tx_ch_num;
157}
158
159static const struct ethtool_rmon_hist_range emac_rmon_ranges[] = {
160	{    0,   64},
161	{   65,  128},
162	{  129,  256},
163	{  257,  512},
164	{  513, PRUETH_MAX_PKT_SIZE},
165	{}
166};
167
168static void emac_get_rmon_stats(struct net_device *ndev,
169				struct ethtool_rmon_stats *rmon_stats,
170				const struct ethtool_rmon_hist_range **ranges)
171{
172	struct prueth_emac *emac = netdev_priv(ndev);
173
174	*ranges = emac_rmon_ranges;
175
176	rmon_stats->undersize_pkts = emac_get_stat_by_name(emac, "rx_bucket1_frames") -
177				     emac_get_stat_by_name(emac, "rx_64B_frames");
178
179	rmon_stats->hist[0] = emac_get_stat_by_name(emac, "rx_bucket1_frames");
180	rmon_stats->hist[1] = emac_get_stat_by_name(emac, "rx_bucket2_frames");
181	rmon_stats->hist[2] = emac_get_stat_by_name(emac, "rx_bucket3_frames");
182	rmon_stats->hist[3] = emac_get_stat_by_name(emac, "rx_bucket4_frames");
183	rmon_stats->hist[4] = emac_get_stat_by_name(emac, "rx_bucket5_frames");
184
185	rmon_stats->hist_tx[0] = emac_get_stat_by_name(emac, "tx_bucket1_frames");
186	rmon_stats->hist_tx[1] = emac_get_stat_by_name(emac, "tx_bucket2_frames");
187	rmon_stats->hist_tx[2] = emac_get_stat_by_name(emac, "tx_bucket3_frames");
188	rmon_stats->hist_tx[3] = emac_get_stat_by_name(emac, "tx_bucket4_frames");
189	rmon_stats->hist_tx[4] = emac_get_stat_by_name(emac, "tx_bucket5_frames");
190}
191
192const struct ethtool_ops icssg_ethtool_ops = {
193	.get_drvinfo = emac_get_drvinfo,
194	.get_msglevel = emac_get_msglevel,
195	.set_msglevel = emac_set_msglevel,
196	.get_sset_count = emac_get_sset_count,
197	.get_ethtool_stats = emac_get_ethtool_stats,
198	.get_strings = emac_get_strings,
199	.get_ts_info = emac_get_ts_info,
200	.get_channels = emac_get_channels,
201	.set_channels = emac_set_channels,
202	.get_link_ksettings = emac_get_link_ksettings,
203	.set_link_ksettings = emac_set_link_ksettings,
204	.get_link = ethtool_op_get_link,
205	.get_eee = emac_get_eee,
206	.set_eee = emac_set_eee,
207	.nway_reset = emac_nway_reset,
208	.get_rmon_stats = emac_get_rmon_stats,
209};
210