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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright IBM Corp. 2018
4 */
5
6#define KMSG_COMPONENT "qeth"
7#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
8
9#include <linux/ethtool.h>
10#include "qeth_core.h"
11
12
13#define QETH_TXQ_STAT(_name, _stat) { \
14 .name = _name, \
15 .offset = offsetof(struct qeth_out_q_stats, _stat) \
16}
17
18#define QETH_CARD_STAT(_name, _stat) { \
19 .name = _name, \
20 .offset = offsetof(struct qeth_card_stats, _stat) \
21}
22
23struct qeth_stats {
24 char name[ETH_GSTRING_LEN];
25 unsigned int offset;
26};
27
28static const struct qeth_stats txq_stats[] = {
29 QETH_TXQ_STAT("IO buffers", bufs),
30 QETH_TXQ_STAT("IO buffer elements", buf_elements),
31 QETH_TXQ_STAT("packed IO buffers", bufs_pack),
32 QETH_TXQ_STAT("skbs", tx_packets),
33 QETH_TXQ_STAT("packed skbs", skbs_pack),
34 QETH_TXQ_STAT("SG skbs", skbs_sg),
35 QETH_TXQ_STAT("HW csum skbs", skbs_csum),
36 QETH_TXQ_STAT("TSO skbs", skbs_tso),
37 QETH_TXQ_STAT("linearized skbs", skbs_linearized),
38 QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
39 QETH_TXQ_STAT("TSO bytes", tso_bytes),
40 QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
41 QETH_TXQ_STAT("Queue stopped", stopped),
42 QETH_TXQ_STAT("Completion yield", completion_yield),
43 QETH_TXQ_STAT("Completion timer", completion_timer),
44};
45
46static const struct qeth_stats card_stats[] = {
47 QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
48 QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
49 QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
50 QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
51 QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
52};
53
54#define TXQ_STATS_LEN ARRAY_SIZE(txq_stats)
55#define CARD_STATS_LEN ARRAY_SIZE(card_stats)
56
57static void qeth_add_stat_data(u64 **dst, void *src,
58 const struct qeth_stats stats[],
59 unsigned int size)
60{
61 unsigned int i;
62 char *stat;
63
64 for (i = 0; i < size; i++) {
65 stat = (char *)src + stats[i].offset;
66 **dst = *(u64 *)stat;
67 (*dst)++;
68 }
69}
70
71static void qeth_add_stat_strings(u8 **data, const char *prefix,
72 const struct qeth_stats stats[],
73 unsigned int size)
74{
75 unsigned int i;
76
77 for (i = 0; i < size; i++) {
78 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name);
79 *data += ETH_GSTRING_LEN;
80 }
81}
82
83static int qeth_get_sset_count(struct net_device *dev, int stringset)
84{
85 struct qeth_card *card = dev->ml_priv;
86
87 switch (stringset) {
88 case ETH_SS_STATS:
89 return CARD_STATS_LEN +
90 card->qdio.no_out_queues * TXQ_STATS_LEN;
91 default:
92 return -EINVAL;
93 }
94}
95
96static void qeth_get_ethtool_stats(struct net_device *dev,
97 struct ethtool_stats *stats, u64 *data)
98{
99 struct qeth_card *card = dev->ml_priv;
100 unsigned int i;
101
102 qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
103 for (i = 0; i < card->qdio.no_out_queues; i++)
104 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
105 txq_stats, TXQ_STATS_LEN);
106}
107
108static void qeth_get_ringparam(struct net_device *dev,
109 struct ethtool_ringparam *param)
110{
111 struct qeth_card *card = dev->ml_priv;
112
113 param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
114 param->rx_mini_max_pending = 0;
115 param->rx_jumbo_max_pending = 0;
116 param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
117
118 param->rx_pending = card->qdio.in_buf_pool.buf_count;
119 param->rx_mini_pending = 0;
120 param->rx_jumbo_pending = 0;
121 param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
122}
123
124static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
125{
126 struct qeth_card *card = dev->ml_priv;
127 char prefix[ETH_GSTRING_LEN] = "";
128 unsigned int i;
129
130 switch (stringset) {
131 case ETH_SS_STATS:
132 qeth_add_stat_strings(&data, prefix, card_stats,
133 CARD_STATS_LEN);
134 for (i = 0; i < card->qdio.no_out_queues; i++) {
135 snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
136 qeth_add_stat_strings(&data, prefix, txq_stats,
137 TXQ_STATS_LEN);
138 }
139 break;
140 default:
141 WARN_ON(1);
142 break;
143 }
144}
145
146static void qeth_get_drvinfo(struct net_device *dev,
147 struct ethtool_drvinfo *info)
148{
149 struct qeth_card *card = dev->ml_priv;
150
151 strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
152 sizeof(info->driver));
153 strlcpy(info->version, "1.0", sizeof(info->version));
154 strlcpy(info->fw_version, card->info.mcl_level,
155 sizeof(info->fw_version));
156 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
157 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
158}
159
160static void qeth_get_channels(struct net_device *dev,
161 struct ethtool_channels *channels)
162{
163 struct qeth_card *card = dev->ml_priv;
164
165 channels->max_rx = dev->num_rx_queues;
166 channels->max_tx = card->qdio.no_out_queues;
167 channels->max_other = 0;
168 channels->max_combined = 0;
169 channels->rx_count = dev->real_num_rx_queues;
170 channels->tx_count = dev->real_num_tx_queues;
171 channels->other_count = 0;
172 channels->combined_count = 0;
173}
174
175/* Helper function to fill 'advertising' and 'supported' which are the same. */
176/* Autoneg and full-duplex are supported and advertised unconditionally. */
177/* Always advertise and support all speeds up to specified, and only one */
178/* specified port type. */
179static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
180 int maxspeed, int porttype)
181{
182 ethtool_link_ksettings_zero_link_mode(cmd, supported);
183 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
184 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
185
186 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
187 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
188
189 switch (porttype) {
190 case PORT_TP:
191 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
192 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
193 break;
194 case PORT_FIBRE:
195 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
196 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
197 break;
198 default:
199 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
200 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
201 WARN_ON_ONCE(1);
202 }
203
204 /* partially does fall through, to also select lower speeds */
205 switch (maxspeed) {
206 case SPEED_25000:
207 ethtool_link_ksettings_add_link_mode(cmd, supported,
208 25000baseSR_Full);
209 ethtool_link_ksettings_add_link_mode(cmd, advertising,
210 25000baseSR_Full);
211 break;
212 case SPEED_10000:
213 ethtool_link_ksettings_add_link_mode(cmd, supported,
214 10000baseT_Full);
215 ethtool_link_ksettings_add_link_mode(cmd, advertising,
216 10000baseT_Full);
217 /* fall through */
218 case SPEED_1000:
219 ethtool_link_ksettings_add_link_mode(cmd, supported,
220 1000baseT_Full);
221 ethtool_link_ksettings_add_link_mode(cmd, advertising,
222 1000baseT_Full);
223 ethtool_link_ksettings_add_link_mode(cmd, supported,
224 1000baseT_Half);
225 ethtool_link_ksettings_add_link_mode(cmd, advertising,
226 1000baseT_Half);
227 /* fall through */
228 case SPEED_100:
229 ethtool_link_ksettings_add_link_mode(cmd, supported,
230 100baseT_Full);
231 ethtool_link_ksettings_add_link_mode(cmd, advertising,
232 100baseT_Full);
233 ethtool_link_ksettings_add_link_mode(cmd, supported,
234 100baseT_Half);
235 ethtool_link_ksettings_add_link_mode(cmd, advertising,
236 100baseT_Half);
237 /* fall through */
238 case SPEED_10:
239 ethtool_link_ksettings_add_link_mode(cmd, supported,
240 10baseT_Full);
241 ethtool_link_ksettings_add_link_mode(cmd, advertising,
242 10baseT_Full);
243 ethtool_link_ksettings_add_link_mode(cmd, supported,
244 10baseT_Half);
245 ethtool_link_ksettings_add_link_mode(cmd, advertising,
246 10baseT_Half);
247 break;
248 default:
249 ethtool_link_ksettings_add_link_mode(cmd, supported,
250 10baseT_Full);
251 ethtool_link_ksettings_add_link_mode(cmd, advertising,
252 10baseT_Full);
253 ethtool_link_ksettings_add_link_mode(cmd, supported,
254 10baseT_Half);
255 ethtool_link_ksettings_add_link_mode(cmd, advertising,
256 10baseT_Half);
257 WARN_ON_ONCE(1);
258 }
259}
260
261
262static int qeth_get_link_ksettings(struct net_device *netdev,
263 struct ethtool_link_ksettings *cmd)
264{
265 struct qeth_card *card = netdev->ml_priv;
266 enum qeth_link_types link_type;
267 struct carrier_info carrier_info;
268 int rc;
269
270 if (IS_IQD(card) || IS_VM_NIC(card))
271 link_type = QETH_LINK_TYPE_10GBIT_ETH;
272 else
273 link_type = card->info.link_type;
274
275 cmd->base.duplex = DUPLEX_FULL;
276 cmd->base.autoneg = AUTONEG_ENABLE;
277 cmd->base.phy_address = 0;
278 cmd->base.mdio_support = 0;
279 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
280 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
281
282 switch (link_type) {
283 case QETH_LINK_TYPE_FAST_ETH:
284 case QETH_LINK_TYPE_LANE_ETH100:
285 cmd->base.speed = SPEED_100;
286 cmd->base.port = PORT_TP;
287 break;
288 case QETH_LINK_TYPE_GBIT_ETH:
289 case QETH_LINK_TYPE_LANE_ETH1000:
290 cmd->base.speed = SPEED_1000;
291 cmd->base.port = PORT_FIBRE;
292 break;
293 case QETH_LINK_TYPE_10GBIT_ETH:
294 cmd->base.speed = SPEED_10000;
295 cmd->base.port = PORT_FIBRE;
296 break;
297 case QETH_LINK_TYPE_25GBIT_ETH:
298 cmd->base.speed = SPEED_25000;
299 cmd->base.port = PORT_FIBRE;
300 break;
301 default:
302 cmd->base.speed = SPEED_10;
303 cmd->base.port = PORT_TP;
304 }
305 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
306
307 /* Check if we can obtain more accurate information. */
308 /* If QUERY_CARD_INFO command is not supported or fails, */
309 /* just return the heuristics that was filled above. */
310 rc = qeth_query_card_info(card, &carrier_info);
311 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
312 return 0;
313 if (rc) /* report error from the hardware operation */
314 return rc;
315 /* on success, fill in the information got from the hardware */
316
317 netdev_dbg(netdev,
318 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
319 carrier_info.card_type,
320 carrier_info.port_mode,
321 carrier_info.port_speed);
322
323 /* Update attributes for which we've obtained more authoritative */
324 /* information, leave the rest the way they where filled above. */
325 switch (carrier_info.card_type) {
326 case CARD_INFO_TYPE_1G_COPPER_A:
327 case CARD_INFO_TYPE_1G_COPPER_B:
328 cmd->base.port = PORT_TP;
329 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
330 break;
331 case CARD_INFO_TYPE_1G_FIBRE_A:
332 case CARD_INFO_TYPE_1G_FIBRE_B:
333 cmd->base.port = PORT_FIBRE;
334 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
335 break;
336 case CARD_INFO_TYPE_10G_FIBRE_A:
337 case CARD_INFO_TYPE_10G_FIBRE_B:
338 cmd->base.port = PORT_FIBRE;
339 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
340 break;
341 }
342
343 switch (carrier_info.port_mode) {
344 case CARD_INFO_PORTM_FULLDUPLEX:
345 cmd->base.duplex = DUPLEX_FULL;
346 break;
347 case CARD_INFO_PORTM_HALFDUPLEX:
348 cmd->base.duplex = DUPLEX_HALF;
349 break;
350 }
351
352 switch (carrier_info.port_speed) {
353 case CARD_INFO_PORTS_10M:
354 cmd->base.speed = SPEED_10;
355 break;
356 case CARD_INFO_PORTS_100M:
357 cmd->base.speed = SPEED_100;
358 break;
359 case CARD_INFO_PORTS_1G:
360 cmd->base.speed = SPEED_1000;
361 break;
362 case CARD_INFO_PORTS_10G:
363 cmd->base.speed = SPEED_10000;
364 break;
365 case CARD_INFO_PORTS_25G:
366 cmd->base.speed = SPEED_25000;
367 break;
368 }
369
370 return 0;
371}
372
373const struct ethtool_ops qeth_ethtool_ops = {
374 .get_link = ethtool_op_get_link,
375 .get_ringparam = qeth_get_ringparam,
376 .get_strings = qeth_get_strings,
377 .get_ethtool_stats = qeth_get_ethtool_stats,
378 .get_sset_count = qeth_get_sset_count,
379 .get_drvinfo = qeth_get_drvinfo,
380 .get_channels = qeth_get_channels,
381 .get_link_ksettings = qeth_get_link_ksettings,
382};
383
384const struct ethtool_ops qeth_osn_ethtool_ops = {
385 .get_strings = qeth_get_strings,
386 .get_ethtool_stats = qeth_get_ethtool_stats,
387 .get_sset_count = qeth_get_sset_count,
388 .get_drvinfo = qeth_get_drvinfo,
389};