1 /* Ethtool support for Altera Triple-Speed Ethernet MAC driver
2 * Copyright (C) 2008-2014 Altera Corporation. All rights reserved
3 *
4 * Contributors:
5 * Dalon Westergreen
6 * Thomas Chou
7 * Ian Abbott
8 * Yuriy Kozlov
9 * Tobias Klauser
10 * Andriy Smolskyy
11 * Roman Bulgakov
12 * Dmytro Mytarchuk
13 *
14 * Original driver contributed by SLS.
15 * Major updates contributed by GlobalLogic
16 *
17 * This program is free software; you can redistribute it and/or modify it
18 * under the terms and conditions of the GNU General Public License,
19 * version 2, as published by the Free Software Foundation.
20 *
21 * This program is distributed in the hope it will be useful, but WITHOUT
22 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
23 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
24 * more details.
25 *
26 * You should have received a copy of the GNU General Public License along with
27 * this program. If not, see <http://www.gnu.org/licenses/>.
28 */
29
30 #include <linux/ethtool.h>
31 #include <linux/kernel.h>
32 #include <linux/netdevice.h>
33 #include <linux/phy.h>
34
35 #include "altera_tse.h"
36
37 #define TSE_STATS_LEN 31
38 #define TSE_NUM_REGS 128
39
40 static char const stat_gstrings[][ETH_GSTRING_LEN] = {
41 "tx_packets",
42 "rx_packets",
43 "rx_crc_errors",
44 "rx_align_errors",
45 "tx_bytes",
46 "rx_bytes",
47 "tx_pause",
48 "rx_pause",
49 "rx_errors",
50 "tx_errors",
51 "rx_unicast",
52 "rx_multicast",
53 "rx_broadcast",
54 "tx_discards",
55 "tx_unicast",
56 "tx_multicast",
57 "tx_broadcast",
58 "ether_drops",
59 "rx_total_bytes",
60 "rx_total_packets",
61 "rx_undersize",
62 "rx_oversize",
63 "rx_64_bytes",
64 "rx_65_127_bytes",
65 "rx_128_255_bytes",
66 "rx_256_511_bytes",
67 "rx_512_1023_bytes",
68 "rx_1024_1518_bytes",
69 "rx_gte_1519_bytes",
70 "rx_jabbers",
71 "rx_runts",
72 };
73
tse_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)74 static void tse_get_drvinfo(struct net_device *dev,
75 struct ethtool_drvinfo *info)
76 {
77 struct altera_tse_private *priv = netdev_priv(dev);
78 u32 rev = ioread32(&priv->mac_dev->megacore_revision);
79
80 strcpy(info->driver, "altera_tse");
81 strcpy(info->version, "v8.0");
82 snprintf(info->fw_version, ETHTOOL_FWVERS_LEN, "v%d.%d",
83 rev & 0xFFFF, (rev & 0xFFFF0000) >> 16);
84 sprintf(info->bus_info, "platform");
85 }
86
87 /* Fill in a buffer with the strings which correspond to the
88 * stats
89 */
tse_gstrings(struct net_device * dev,u32 stringset,u8 * buf)90 static void tse_gstrings(struct net_device *dev, u32 stringset, u8 *buf)
91 {
92 memcpy(buf, stat_gstrings, TSE_STATS_LEN * ETH_GSTRING_LEN);
93 }
94
tse_fill_stats(struct net_device * dev,struct ethtool_stats * dummy,u64 * buf)95 static void tse_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
96 u64 *buf)
97 {
98 struct altera_tse_private *priv = netdev_priv(dev);
99 u64 ext;
100
101 buf[0] = csrrd32(priv->mac_dev,
102 tse_csroffs(frames_transmitted_ok));
103 buf[1] = csrrd32(priv->mac_dev,
104 tse_csroffs(frames_received_ok));
105 buf[2] = csrrd32(priv->mac_dev,
106 tse_csroffs(frames_check_sequence_errors));
107 buf[3] = csrrd32(priv->mac_dev,
108 tse_csroffs(alignment_errors));
109
110 /* Extended aOctetsTransmittedOK counter */
111 ext = (u64) csrrd32(priv->mac_dev,
112 tse_csroffs(msb_octets_transmitted_ok)) << 32;
113
114 ext |= csrrd32(priv->mac_dev,
115 tse_csroffs(octets_transmitted_ok));
116 buf[4] = ext;
117
118 /* Extended aOctetsReceivedOK counter */
119 ext = (u64) csrrd32(priv->mac_dev,
120 tse_csroffs(msb_octets_received_ok)) << 32;
121
122 ext |= csrrd32(priv->mac_dev,
123 tse_csroffs(octets_received_ok));
124 buf[5] = ext;
125
126 buf[6] = csrrd32(priv->mac_dev,
127 tse_csroffs(tx_pause_mac_ctrl_frames));
128 buf[7] = csrrd32(priv->mac_dev,
129 tse_csroffs(rx_pause_mac_ctrl_frames));
130 buf[8] = csrrd32(priv->mac_dev,
131 tse_csroffs(if_in_errors));
132 buf[9] = csrrd32(priv->mac_dev,
133 tse_csroffs(if_out_errors));
134 buf[10] = csrrd32(priv->mac_dev,
135 tse_csroffs(if_in_ucast_pkts));
136 buf[11] = csrrd32(priv->mac_dev,
137 tse_csroffs(if_in_multicast_pkts));
138 buf[12] = csrrd32(priv->mac_dev,
139 tse_csroffs(if_in_broadcast_pkts));
140 buf[13] = csrrd32(priv->mac_dev,
141 tse_csroffs(if_out_discards));
142 buf[14] = csrrd32(priv->mac_dev,
143 tse_csroffs(if_out_ucast_pkts));
144 buf[15] = csrrd32(priv->mac_dev,
145 tse_csroffs(if_out_multicast_pkts));
146 buf[16] = csrrd32(priv->mac_dev,
147 tse_csroffs(if_out_broadcast_pkts));
148 buf[17] = csrrd32(priv->mac_dev,
149 tse_csroffs(ether_stats_drop_events));
150
151 /* Extended etherStatsOctets counter */
152 ext = (u64) csrrd32(priv->mac_dev,
153 tse_csroffs(msb_ether_stats_octets)) << 32;
154 ext |= csrrd32(priv->mac_dev,
155 tse_csroffs(ether_stats_octets));
156 buf[18] = ext;
157
158 buf[19] = csrrd32(priv->mac_dev,
159 tse_csroffs(ether_stats_pkts));
160 buf[20] = csrrd32(priv->mac_dev,
161 tse_csroffs(ether_stats_undersize_pkts));
162 buf[21] = csrrd32(priv->mac_dev,
163 tse_csroffs(ether_stats_oversize_pkts));
164 buf[22] = csrrd32(priv->mac_dev,
165 tse_csroffs(ether_stats_pkts_64_octets));
166 buf[23] = csrrd32(priv->mac_dev,
167 tse_csroffs(ether_stats_pkts_65to127_octets));
168 buf[24] = csrrd32(priv->mac_dev,
169 tse_csroffs(ether_stats_pkts_128to255_octets));
170 buf[25] = csrrd32(priv->mac_dev,
171 tse_csroffs(ether_stats_pkts_256to511_octets));
172 buf[26] = csrrd32(priv->mac_dev,
173 tse_csroffs(ether_stats_pkts_512to1023_octets));
174 buf[27] = csrrd32(priv->mac_dev,
175 tse_csroffs(ether_stats_pkts_1024to1518_octets));
176 buf[28] = csrrd32(priv->mac_dev,
177 tse_csroffs(ether_stats_pkts_1519tox_octets));
178 buf[29] = csrrd32(priv->mac_dev,
179 tse_csroffs(ether_stats_jabbers));
180 buf[30] = csrrd32(priv->mac_dev,
181 tse_csroffs(ether_stats_fragments));
182 }
183
tse_sset_count(struct net_device * dev,int sset)184 static int tse_sset_count(struct net_device *dev, int sset)
185 {
186 switch (sset) {
187 case ETH_SS_STATS:
188 return TSE_STATS_LEN;
189 default:
190 return -EOPNOTSUPP;
191 }
192 }
193
tse_get_msglevel(struct net_device * dev)194 static u32 tse_get_msglevel(struct net_device *dev)
195 {
196 struct altera_tse_private *priv = netdev_priv(dev);
197 return priv->msg_enable;
198 }
199
tse_set_msglevel(struct net_device * dev,uint32_t data)200 static void tse_set_msglevel(struct net_device *dev, uint32_t data)
201 {
202 struct altera_tse_private *priv = netdev_priv(dev);
203 priv->msg_enable = data;
204 }
205
tse_reglen(struct net_device * dev)206 static int tse_reglen(struct net_device *dev)
207 {
208 return TSE_NUM_REGS * sizeof(u32);
209 }
210
tse_get_regs(struct net_device * dev,struct ethtool_regs * regs,void * regbuf)211 static void tse_get_regs(struct net_device *dev, struct ethtool_regs *regs,
212 void *regbuf)
213 {
214 int i;
215 struct altera_tse_private *priv = netdev_priv(dev);
216 u32 *buf = regbuf;
217
218 /* Set version to a known value, so ethtool knows
219 * how to do any special formatting of this data.
220 * This version number will need to change if and
221 * when this register table is changed.
222 *
223 * version[31:0] = 1: Dump the first 128 TSE Registers
224 * Upper bits are all 0 by default
225 *
226 * Upper 16-bits will indicate feature presence for
227 * Ethtool register decoding in future version.
228 */
229
230 regs->version = 1;
231
232 for (i = 0; i < TSE_NUM_REGS; i++)
233 buf[i] = csrrd32(priv->mac_dev, i * 4);
234 }
235
tse_get_settings(struct net_device * dev,struct ethtool_cmd * cmd)236 static int tse_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
237 {
238 struct altera_tse_private *priv = netdev_priv(dev);
239 struct phy_device *phydev = priv->phydev;
240
241 if (phydev == NULL)
242 return -ENODEV;
243
244 return phy_ethtool_gset(phydev, cmd);
245 }
246
tse_set_settings(struct net_device * dev,struct ethtool_cmd * cmd)247 static int tse_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
248 {
249 struct altera_tse_private *priv = netdev_priv(dev);
250 struct phy_device *phydev = priv->phydev;
251
252 if (phydev == NULL)
253 return -ENODEV;
254
255 return phy_ethtool_sset(phydev, cmd);
256 }
257
258 static const struct ethtool_ops tse_ethtool_ops = {
259 .get_drvinfo = tse_get_drvinfo,
260 .get_regs_len = tse_reglen,
261 .get_regs = tse_get_regs,
262 .get_link = ethtool_op_get_link,
263 .get_settings = tse_get_settings,
264 .set_settings = tse_set_settings,
265 .get_strings = tse_gstrings,
266 .get_sset_count = tse_sset_count,
267 .get_ethtool_stats = tse_fill_stats,
268 .get_msglevel = tse_get_msglevel,
269 .set_msglevel = tse_set_msglevel,
270 };
271
altera_tse_set_ethtool_ops(struct net_device * netdev)272 void altera_tse_set_ethtool_ops(struct net_device *netdev)
273 {
274 netdev->ethtool_ops = &tse_ethtool_ops;
275 }
276