1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Network device driver for Cell Processor-Based Blade
4  *
5  * (C) Copyright IBM Corp. 2005
6  *
7  * Authors : Utz Bacher <utz.bacher@de.ibm.com>
8  *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
9  */
10 
11 #include <linux/netdevice.h>
12 #include <linux/ethtool.h>
13 #include <linux/pci.h>
14 
15 #include "spider_net.h"
16 
17 
18 static struct {
19 	const char str[ETH_GSTRING_LEN];
20 } ethtool_stats_keys[] = {
21 	{ "tx_packets" },
22 	{ "tx_bytes" },
23 	{ "rx_packets" },
24 	{ "rx_bytes" },
25 	{ "tx_errors" },
26 	{ "tx_dropped" },
27 	{ "rx_dropped" },
28 	{ "rx_descriptor_error" },
29 	{ "tx_timeouts" },
30 	{ "alloc_rx_skb_error" },
31 	{ "rx_iommu_map_error" },
32 	{ "tx_iommu_map_error" },
33 	{ "rx_desc_unk_state" },
34 };
35 
36 static int
37 spider_net_ethtool_get_link_ksettings(struct net_device *netdev,
38 				      struct ethtool_link_ksettings *cmd)
39 {
40 	struct spider_net_card *card;
41 	card = netdev_priv(netdev);
42 
43 	ethtool_link_ksettings_zero_link_mode(cmd, supported);
44 	ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full);
45 	ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
46 
47 	ethtool_link_ksettings_zero_link_mode(cmd, advertising);
48 	ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full);
49 	ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
50 
51 	cmd->base.port = PORT_FIBRE;
52 	cmd->base.speed = card->phy.speed;
53 	cmd->base.duplex = DUPLEX_FULL;
54 
55 	return 0;
56 }
57 
58 static void
59 spider_net_ethtool_get_drvinfo(struct net_device *netdev,
60 			       struct ethtool_drvinfo *drvinfo)
61 {
62 	struct spider_net_card *card;
63 	card = netdev_priv(netdev);
64 
65 	/* clear and fill out info */
66 	strlcpy(drvinfo->driver, spider_net_driver_name,
67 		sizeof(drvinfo->driver));
68 	strlcpy(drvinfo->version, VERSION, sizeof(drvinfo->version));
69 	strlcpy(drvinfo->fw_version, "no information",
70 		sizeof(drvinfo->fw_version));
71 	strlcpy(drvinfo->bus_info, pci_name(card->pdev),
72 		sizeof(drvinfo->bus_info));
73 }
74 
75 static void
76 spider_net_ethtool_get_wol(struct net_device *netdev,
77 			   struct ethtool_wolinfo *wolinfo)
78 {
79 	/* no support for wol */
80 	wolinfo->supported = 0;
81 	wolinfo->wolopts = 0;
82 }
83 
84 static u32
85 spider_net_ethtool_get_msglevel(struct net_device *netdev)
86 {
87 	struct spider_net_card *card;
88 	card = netdev_priv(netdev);
89 	return card->msg_enable;
90 }
91 
92 static void
93 spider_net_ethtool_set_msglevel(struct net_device *netdev,
94 				u32 level)
95 {
96 	struct spider_net_card *card;
97 	card = netdev_priv(netdev);
98 	card->msg_enable = level;
99 }
100 
101 static int
102 spider_net_ethtool_nway_reset(struct net_device *netdev)
103 {
104 	if (netif_running(netdev)) {
105 		spider_net_stop(netdev);
106 		spider_net_open(netdev);
107 	}
108 	return 0;
109 }
110 
111 static void
112 spider_net_ethtool_get_ringparam(struct net_device *netdev,
113 				 struct ethtool_ringparam *ering,
114 				 struct kernel_ethtool_ringparam *kernel_ering,
115 				 struct netlink_ext_ack *extack)
116 {
117 	struct spider_net_card *card = netdev_priv(netdev);
118 
119 	ering->tx_max_pending = SPIDER_NET_TX_DESCRIPTORS_MAX;
120 	ering->tx_pending = card->tx_chain.num_desc;
121 	ering->rx_max_pending = SPIDER_NET_RX_DESCRIPTORS_MAX;
122 	ering->rx_pending = card->rx_chain.num_desc;
123 }
124 
125 static int spider_net_get_sset_count(struct net_device *netdev, int sset)
126 {
127 	switch (sset) {
128 	case ETH_SS_STATS:
129 		return ARRAY_SIZE(ethtool_stats_keys);
130 	default:
131 		return -EOPNOTSUPP;
132 	}
133 }
134 
135 static void spider_net_get_ethtool_stats(struct net_device *netdev,
136 		struct ethtool_stats *stats, u64 *data)
137 {
138 	struct spider_net_card *card = netdev_priv(netdev);
139 
140 	data[0] = netdev->stats.tx_packets;
141 	data[1] = netdev->stats.tx_bytes;
142 	data[2] = netdev->stats.rx_packets;
143 	data[3] = netdev->stats.rx_bytes;
144 	data[4] = netdev->stats.tx_errors;
145 	data[5] = netdev->stats.tx_dropped;
146 	data[6] = netdev->stats.rx_dropped;
147 	data[7] = card->spider_stats.rx_desc_error;
148 	data[8] = card->spider_stats.tx_timeouts;
149 	data[9] = card->spider_stats.alloc_rx_skb_error;
150 	data[10] = card->spider_stats.rx_iommu_map_error;
151 	data[11] = card->spider_stats.tx_iommu_map_error;
152 	data[12] = card->spider_stats.rx_desc_unk_state;
153 }
154 
155 static void spider_net_get_strings(struct net_device *netdev, u32 stringset,
156 				   u8 *data)
157 {
158 	memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
159 }
160 
161 const struct ethtool_ops spider_net_ethtool_ops = {
162 	.get_drvinfo		= spider_net_ethtool_get_drvinfo,
163 	.get_wol		= spider_net_ethtool_get_wol,
164 	.get_msglevel		= spider_net_ethtool_get_msglevel,
165 	.set_msglevel		= spider_net_ethtool_set_msglevel,
166 	.get_link		= ethtool_op_get_link,
167 	.nway_reset		= spider_net_ethtool_nway_reset,
168 	.get_ringparam          = spider_net_ethtool_get_ringparam,
169 	.get_strings		= spider_net_get_strings,
170 	.get_sset_count		= spider_net_get_sset_count,
171 	.get_ethtool_stats	= spider_net_get_ethtool_stats,
172 	.get_link_ksettings	= spider_net_ethtool_get_link_ksettings,
173 };
174 
175