1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2 /* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved */
3
4 #include <linux/ethtool.h>
5 #include <linux/kernel.h>
6 #include <linux/netdevice.h>
7
8 #include "prestera_ethtool.h"
9 #include "prestera.h"
10 #include "prestera_hw.h"
11
12 #define PRESTERA_STATS_CNT \
13 (sizeof(struct prestera_port_stats) / sizeof(u64))
14 #define PRESTERA_STATS_IDX(name) \
15 (offsetof(struct prestera_port_stats, name) / sizeof(u64))
16 #define PRESTERA_STATS_FIELD(name) \
17 [PRESTERA_STATS_IDX(name)] = __stringify(name)
18
19 static const char driver_kind[] = "prestera";
20
21 static const struct prestera_link_mode {
22 enum ethtool_link_mode_bit_indices eth_mode;
23 u32 speed;
24 u64 pr_mask;
25 u8 duplex;
26 u8 port_type;
27 } port_link_modes[PRESTERA_LINK_MODE_MAX] = {
28 [PRESTERA_LINK_MODE_10baseT_Half] = {
29 .eth_mode = ETHTOOL_LINK_MODE_10baseT_Half_BIT,
30 .speed = 10,
31 .pr_mask = 1 << PRESTERA_LINK_MODE_10baseT_Half,
32 .duplex = PRESTERA_PORT_DUPLEX_HALF,
33 .port_type = PRESTERA_PORT_TYPE_TP,
34 },
35 [PRESTERA_LINK_MODE_10baseT_Full] = {
36 .eth_mode = ETHTOOL_LINK_MODE_10baseT_Full_BIT,
37 .speed = 10,
38 .pr_mask = 1 << PRESTERA_LINK_MODE_10baseT_Full,
39 .duplex = PRESTERA_PORT_DUPLEX_FULL,
40 .port_type = PRESTERA_PORT_TYPE_TP,
41 },
42 [PRESTERA_LINK_MODE_100baseT_Half] = {
43 .eth_mode = ETHTOOL_LINK_MODE_100baseT_Half_BIT,
44 .speed = 100,
45 .pr_mask = 1 << PRESTERA_LINK_MODE_100baseT_Half,
46 .duplex = PRESTERA_PORT_DUPLEX_HALF,
47 .port_type = PRESTERA_PORT_TYPE_TP,
48 },
49 [PRESTERA_LINK_MODE_100baseT_Full] = {
50 .eth_mode = ETHTOOL_LINK_MODE_100baseT_Full_BIT,
51 .speed = 100,
52 .pr_mask = 1 << PRESTERA_LINK_MODE_100baseT_Full,
53 .duplex = PRESTERA_PORT_DUPLEX_FULL,
54 .port_type = PRESTERA_PORT_TYPE_TP,
55 },
56 [PRESTERA_LINK_MODE_1000baseT_Half] = {
57 .eth_mode = ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
58 .speed = 1000,
59 .pr_mask = 1 << PRESTERA_LINK_MODE_1000baseT_Half,
60 .duplex = PRESTERA_PORT_DUPLEX_HALF,
61 .port_type = PRESTERA_PORT_TYPE_TP,
62 },
63 [PRESTERA_LINK_MODE_1000baseT_Full] = {
64 .eth_mode = ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
65 .speed = 1000,
66 .pr_mask = 1 << PRESTERA_LINK_MODE_1000baseT_Full,
67 .duplex = PRESTERA_PORT_DUPLEX_FULL,
68 .port_type = PRESTERA_PORT_TYPE_TP,
69 },
70 [PRESTERA_LINK_MODE_1000baseX_Full] = {
71 .eth_mode = ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
72 .speed = 1000,
73 .pr_mask = 1 << PRESTERA_LINK_MODE_1000baseX_Full,
74 .duplex = PRESTERA_PORT_DUPLEX_FULL,
75 .port_type = PRESTERA_PORT_TYPE_FIBRE,
76 },
77 [PRESTERA_LINK_MODE_1000baseKX_Full] = {
78 .eth_mode = ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
79 .speed = 1000,
80 .pr_mask = 1 << PRESTERA_LINK_MODE_1000baseKX_Full,
81 .duplex = PRESTERA_PORT_DUPLEX_FULL,
82 .port_type = PRESTERA_PORT_TYPE_TP,
83 },
84 [PRESTERA_LINK_MODE_2500baseX_Full] = {
85 .eth_mode = ETHTOOL_LINK_MODE_2500baseX_Full_BIT,
86 .speed = 2500,
87 .pr_mask = 1 << PRESTERA_LINK_MODE_2500baseX_Full,
88 .duplex = PRESTERA_PORT_DUPLEX_FULL,
89 },
90 [PRESTERA_LINK_MODE_10GbaseKR_Full] = {
91 .eth_mode = ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
92 .speed = 10000,
93 .pr_mask = 1 << PRESTERA_LINK_MODE_10GbaseKR_Full,
94 .duplex = PRESTERA_PORT_DUPLEX_FULL,
95 .port_type = PRESTERA_PORT_TYPE_TP,
96 },
97 [PRESTERA_LINK_MODE_10GbaseSR_Full] = {
98 .eth_mode = ETHTOOL_LINK_MODE_10000baseSR_Full_BIT,
99 .speed = 10000,
100 .pr_mask = 1 << PRESTERA_LINK_MODE_10GbaseSR_Full,
101 .duplex = PRESTERA_PORT_DUPLEX_FULL,
102 .port_type = PRESTERA_PORT_TYPE_FIBRE,
103 },
104 [PRESTERA_LINK_MODE_10GbaseLR_Full] = {
105 .eth_mode = ETHTOOL_LINK_MODE_10000baseLR_Full_BIT,
106 .speed = 10000,
107 .pr_mask = 1 << PRESTERA_LINK_MODE_10GbaseLR_Full,
108 .duplex = PRESTERA_PORT_DUPLEX_FULL,
109 .port_type = PRESTERA_PORT_TYPE_FIBRE,
110 },
111 [PRESTERA_LINK_MODE_20GbaseKR2_Full] = {
112 .eth_mode = ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT,
113 .speed = 20000,
114 .pr_mask = 1 << PRESTERA_LINK_MODE_20GbaseKR2_Full,
115 .duplex = PRESTERA_PORT_DUPLEX_FULL,
116 .port_type = PRESTERA_PORT_TYPE_TP,
117 },
118 [PRESTERA_LINK_MODE_25GbaseCR_Full] = {
119 .eth_mode = ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
120 .speed = 25000,
121 .pr_mask = 1 << PRESTERA_LINK_MODE_25GbaseCR_Full,
122 .duplex = PRESTERA_PORT_DUPLEX_FULL,
123 .port_type = PRESTERA_PORT_TYPE_DA,
124 },
125 [PRESTERA_LINK_MODE_25GbaseKR_Full] = {
126 .eth_mode = ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
127 .speed = 25000,
128 .pr_mask = 1 << PRESTERA_LINK_MODE_25GbaseKR_Full,
129 .duplex = PRESTERA_PORT_DUPLEX_FULL,
130 .port_type = PRESTERA_PORT_TYPE_TP,
131 },
132 [PRESTERA_LINK_MODE_25GbaseSR_Full] = {
133 .eth_mode = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
134 .speed = 25000,
135 .pr_mask = 1 << PRESTERA_LINK_MODE_25GbaseSR_Full,
136 .duplex = PRESTERA_PORT_DUPLEX_FULL,
137 .port_type = PRESTERA_PORT_TYPE_FIBRE,
138 },
139 [PRESTERA_LINK_MODE_40GbaseKR4_Full] = {
140 .eth_mode = ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
141 .speed = 40000,
142 .pr_mask = 1 << PRESTERA_LINK_MODE_40GbaseKR4_Full,
143 .duplex = PRESTERA_PORT_DUPLEX_FULL,
144 .port_type = PRESTERA_PORT_TYPE_TP,
145 },
146 [PRESTERA_LINK_MODE_40GbaseCR4_Full] = {
147 .eth_mode = ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
148 .speed = 40000,
149 .pr_mask = 1 << PRESTERA_LINK_MODE_40GbaseCR4_Full,
150 .duplex = PRESTERA_PORT_DUPLEX_FULL,
151 .port_type = PRESTERA_PORT_TYPE_DA,
152 },
153 [PRESTERA_LINK_MODE_40GbaseSR4_Full] = {
154 .eth_mode = ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
155 .speed = 40000,
156 .pr_mask = 1 << PRESTERA_LINK_MODE_40GbaseSR4_Full,
157 .duplex = PRESTERA_PORT_DUPLEX_FULL,
158 .port_type = PRESTERA_PORT_TYPE_FIBRE,
159 },
160 [PRESTERA_LINK_MODE_50GbaseCR2_Full] = {
161 .eth_mode = ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT,
162 .speed = 50000,
163 .pr_mask = 1 << PRESTERA_LINK_MODE_50GbaseCR2_Full,
164 .duplex = PRESTERA_PORT_DUPLEX_FULL,
165 .port_type = PRESTERA_PORT_TYPE_DA,
166 },
167 [PRESTERA_LINK_MODE_50GbaseKR2_Full] = {
168 .eth_mode = ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT,
169 .speed = 50000,
170 .pr_mask = 1 << PRESTERA_LINK_MODE_50GbaseKR2_Full,
171 .duplex = PRESTERA_PORT_DUPLEX_FULL,
172 .port_type = PRESTERA_PORT_TYPE_TP,
173 },
174 [PRESTERA_LINK_MODE_50GbaseSR2_Full] = {
175 .eth_mode = ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT,
176 .speed = 50000,
177 .pr_mask = 1 << PRESTERA_LINK_MODE_50GbaseSR2_Full,
178 .duplex = PRESTERA_PORT_DUPLEX_FULL,
179 .port_type = PRESTERA_PORT_TYPE_FIBRE,
180 },
181 [PRESTERA_LINK_MODE_100GbaseKR4_Full] = {
182 .eth_mode = ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
183 .speed = 100000,
184 .pr_mask = 1 << PRESTERA_LINK_MODE_100GbaseKR4_Full,
185 .duplex = PRESTERA_PORT_DUPLEX_FULL,
186 .port_type = PRESTERA_PORT_TYPE_TP,
187 },
188 [PRESTERA_LINK_MODE_100GbaseSR4_Full] = {
189 .eth_mode = ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
190 .speed = 100000,
191 .pr_mask = 1 << PRESTERA_LINK_MODE_100GbaseSR4_Full,
192 .duplex = PRESTERA_PORT_DUPLEX_FULL,
193 .port_type = PRESTERA_PORT_TYPE_FIBRE,
194 },
195 [PRESTERA_LINK_MODE_100GbaseCR4_Full] = {
196 .eth_mode = ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
197 .speed = 100000,
198 .pr_mask = 1 << PRESTERA_LINK_MODE_100GbaseCR4_Full,
199 .duplex = PRESTERA_PORT_DUPLEX_FULL,
200 .port_type = PRESTERA_PORT_TYPE_DA,
201 }
202 };
203
204 static const struct prestera_fec {
205 u32 eth_fec;
206 enum ethtool_link_mode_bit_indices eth_mode;
207 u8 pr_fec;
208 } port_fec_caps[PRESTERA_PORT_FEC_MAX] = {
209 [PRESTERA_PORT_FEC_OFF] = {
210 .eth_fec = ETHTOOL_FEC_OFF,
211 .eth_mode = ETHTOOL_LINK_MODE_FEC_NONE_BIT,
212 .pr_fec = 1 << PRESTERA_PORT_FEC_OFF,
213 },
214 [PRESTERA_PORT_FEC_BASER] = {
215 .eth_fec = ETHTOOL_FEC_BASER,
216 .eth_mode = ETHTOOL_LINK_MODE_FEC_BASER_BIT,
217 .pr_fec = 1 << PRESTERA_PORT_FEC_BASER,
218 },
219 [PRESTERA_PORT_FEC_RS] = {
220 .eth_fec = ETHTOOL_FEC_RS,
221 .eth_mode = ETHTOOL_LINK_MODE_FEC_RS_BIT,
222 .pr_fec = 1 << PRESTERA_PORT_FEC_RS,
223 }
224 };
225
226 static const struct prestera_port_type {
227 enum ethtool_link_mode_bit_indices eth_mode;
228 u8 eth_type;
229 } port_types[PRESTERA_PORT_TYPE_MAX] = {
230 [PRESTERA_PORT_TYPE_NONE] = {
231 .eth_mode = __ETHTOOL_LINK_MODE_MASK_NBITS,
232 .eth_type = PORT_NONE,
233 },
234 [PRESTERA_PORT_TYPE_TP] = {
235 .eth_mode = ETHTOOL_LINK_MODE_TP_BIT,
236 .eth_type = PORT_TP,
237 },
238 [PRESTERA_PORT_TYPE_AUI] = {
239 .eth_mode = ETHTOOL_LINK_MODE_AUI_BIT,
240 .eth_type = PORT_AUI,
241 },
242 [PRESTERA_PORT_TYPE_MII] = {
243 .eth_mode = ETHTOOL_LINK_MODE_MII_BIT,
244 .eth_type = PORT_MII,
245 },
246 [PRESTERA_PORT_TYPE_FIBRE] = {
247 .eth_mode = ETHTOOL_LINK_MODE_FIBRE_BIT,
248 .eth_type = PORT_FIBRE,
249 },
250 [PRESTERA_PORT_TYPE_BNC] = {
251 .eth_mode = ETHTOOL_LINK_MODE_BNC_BIT,
252 .eth_type = PORT_BNC,
253 },
254 [PRESTERA_PORT_TYPE_DA] = {
255 .eth_mode = ETHTOOL_LINK_MODE_TP_BIT,
256 .eth_type = PORT_TP,
257 },
258 [PRESTERA_PORT_TYPE_OTHER] = {
259 .eth_mode = __ETHTOOL_LINK_MODE_MASK_NBITS,
260 .eth_type = PORT_OTHER,
261 }
262 };
263
264 static const char prestera_cnt_name[PRESTERA_STATS_CNT][ETH_GSTRING_LEN] = {
265 PRESTERA_STATS_FIELD(good_octets_received),
266 PRESTERA_STATS_FIELD(bad_octets_received),
267 PRESTERA_STATS_FIELD(mac_trans_error),
268 PRESTERA_STATS_FIELD(broadcast_frames_received),
269 PRESTERA_STATS_FIELD(multicast_frames_received),
270 PRESTERA_STATS_FIELD(frames_64_octets),
271 PRESTERA_STATS_FIELD(frames_65_to_127_octets),
272 PRESTERA_STATS_FIELD(frames_128_to_255_octets),
273 PRESTERA_STATS_FIELD(frames_256_to_511_octets),
274 PRESTERA_STATS_FIELD(frames_512_to_1023_octets),
275 PRESTERA_STATS_FIELD(frames_1024_to_max_octets),
276 PRESTERA_STATS_FIELD(excessive_collision),
277 PRESTERA_STATS_FIELD(multicast_frames_sent),
278 PRESTERA_STATS_FIELD(broadcast_frames_sent),
279 PRESTERA_STATS_FIELD(fc_sent),
280 PRESTERA_STATS_FIELD(fc_received),
281 PRESTERA_STATS_FIELD(buffer_overrun),
282 PRESTERA_STATS_FIELD(undersize),
283 PRESTERA_STATS_FIELD(fragments),
284 PRESTERA_STATS_FIELD(oversize),
285 PRESTERA_STATS_FIELD(jabber),
286 PRESTERA_STATS_FIELD(rx_error_frame_received),
287 PRESTERA_STATS_FIELD(bad_crc),
288 PRESTERA_STATS_FIELD(collisions),
289 PRESTERA_STATS_FIELD(late_collision),
290 PRESTERA_STATS_FIELD(unicast_frames_received),
291 PRESTERA_STATS_FIELD(unicast_frames_sent),
292 PRESTERA_STATS_FIELD(sent_multiple),
293 PRESTERA_STATS_FIELD(sent_deferred),
294 PRESTERA_STATS_FIELD(good_octets_sent),
295 };
296
prestera_ethtool_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * drvinfo)297 static void prestera_ethtool_get_drvinfo(struct net_device *dev,
298 struct ethtool_drvinfo *drvinfo)
299 {
300 struct prestera_port *port = netdev_priv(dev);
301 struct prestera_switch *sw = port->sw;
302
303 strscpy(drvinfo->driver, driver_kind, sizeof(drvinfo->driver));
304 strscpy(drvinfo->bus_info, dev_name(prestera_dev(sw)),
305 sizeof(drvinfo->bus_info));
306 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
307 "%d.%d.%d",
308 sw->dev->fw_rev.maj,
309 sw->dev->fw_rev.min,
310 sw->dev->fw_rev.sub);
311 }
312
prestera_port_type_get(struct prestera_port * port)313 static u8 prestera_port_type_get(struct prestera_port *port)
314 {
315 if (port->caps.type < PRESTERA_PORT_TYPE_MAX)
316 return port_types[port->caps.type].eth_type;
317
318 return PORT_OTHER;
319 }
320
prestera_port_type_set(const struct ethtool_link_ksettings * ecmd,struct prestera_port * port)321 static int prestera_port_type_set(const struct ethtool_link_ksettings *ecmd,
322 struct prestera_port *port)
323 {
324 u32 new_mode = PRESTERA_LINK_MODE_MAX;
325 u32 type, mode;
326
327 for (type = 0; type < PRESTERA_PORT_TYPE_MAX; type++) {
328 if (port_types[type].eth_type == ecmd->base.port &&
329 test_bit(port_types[type].eth_mode,
330 ecmd->link_modes.supported)) {
331 break;
332 }
333 }
334
335 if (type == port->caps.type)
336 return 0;
337 if (type != port->caps.type && ecmd->base.autoneg == AUTONEG_ENABLE)
338 return -EINVAL;
339 if (type == PRESTERA_PORT_TYPE_MAX)
340 return -EOPNOTSUPP;
341
342 for (mode = 0; mode < PRESTERA_LINK_MODE_MAX; mode++) {
343 if ((port_link_modes[mode].pr_mask &
344 port->caps.supp_link_modes) &&
345 type == port_link_modes[mode].port_type) {
346 new_mode = mode;
347 }
348 }
349
350 if (new_mode >= PRESTERA_LINK_MODE_MAX)
351 return -EINVAL;
352
353 port->caps.type = type;
354 port->autoneg = false;
355
356 return 0;
357 }
358
prestera_modes_to_eth(unsigned long * eth_modes,u64 link_modes,u8 fec,u8 type)359 static void prestera_modes_to_eth(unsigned long *eth_modes, u64 link_modes,
360 u8 fec, u8 type)
361 {
362 u32 mode;
363
364 for (mode = 0; mode < PRESTERA_LINK_MODE_MAX; mode++) {
365 if ((port_link_modes[mode].pr_mask & link_modes) == 0)
366 continue;
367
368 if (type != PRESTERA_PORT_TYPE_NONE &&
369 port_link_modes[mode].port_type != type)
370 continue;
371
372 __set_bit(port_link_modes[mode].eth_mode, eth_modes);
373 }
374
375 for (mode = 0; mode < PRESTERA_PORT_FEC_MAX; mode++) {
376 if ((port_fec_caps[mode].pr_fec & fec) == 0)
377 continue;
378
379 __set_bit(port_fec_caps[mode].eth_mode, eth_modes);
380 }
381 }
382
prestera_modes_from_eth(const unsigned long * eth_modes,u64 * link_modes,u8 * fec,u8 type)383 static void prestera_modes_from_eth(const unsigned long *eth_modes,
384 u64 *link_modes, u8 *fec, u8 type)
385 {
386 u64 adver_modes = 0;
387 u32 fec_modes = 0;
388 u32 mode;
389
390 for (mode = 0; mode < PRESTERA_LINK_MODE_MAX; mode++) {
391 if (!test_bit(port_link_modes[mode].eth_mode, eth_modes))
392 continue;
393
394 if (port_link_modes[mode].port_type != type)
395 continue;
396
397 adver_modes |= port_link_modes[mode].pr_mask;
398 }
399
400 for (mode = 0; mode < PRESTERA_PORT_FEC_MAX; mode++) {
401 if (!test_bit(port_fec_caps[mode].eth_mode, eth_modes))
402 continue;
403
404 fec_modes |= port_fec_caps[mode].pr_fec;
405 }
406
407 *link_modes = adver_modes;
408 *fec = fec_modes;
409 }
410
prestera_port_supp_types_get(struct ethtool_link_ksettings * ecmd,struct prestera_port * port)411 static void prestera_port_supp_types_get(struct ethtool_link_ksettings *ecmd,
412 struct prestera_port *port)
413 {
414 u32 mode;
415 u8 ptype;
416
417 for (mode = 0; mode < PRESTERA_LINK_MODE_MAX; mode++) {
418 if ((port_link_modes[mode].pr_mask &
419 port->caps.supp_link_modes) == 0)
420 continue;
421
422 ptype = port_link_modes[mode].port_type;
423 __set_bit(port_types[ptype].eth_mode,
424 ecmd->link_modes.supported);
425 }
426 }
427
prestera_port_remote_cap_get(struct ethtool_link_ksettings * ecmd,struct prestera_port * port)428 static void prestera_port_remote_cap_get(struct ethtool_link_ksettings *ecmd,
429 struct prestera_port *port)
430 {
431 struct prestera_port_phy_state *state = &port->state_phy;
432 bool asym_pause;
433 bool pause;
434 u64 bitmap;
435 int err;
436
437 err = prestera_hw_port_phy_mode_get(port, NULL, &state->lmode_bmap,
438 &state->remote_fc.pause,
439 &state->remote_fc.asym_pause);
440 if (err)
441 netdev_warn(port->dev, "Remote link caps get failed %d",
442 port->caps.transceiver);
443
444 bitmap = state->lmode_bmap;
445
446 prestera_modes_to_eth(ecmd->link_modes.lp_advertising,
447 bitmap, 0, PRESTERA_PORT_TYPE_NONE);
448
449 if (!bitmap_empty(ecmd->link_modes.lp_advertising,
450 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
451 ethtool_link_ksettings_add_link_mode(ecmd,
452 lp_advertising,
453 Autoneg);
454 }
455
456 pause = state->remote_fc.pause;
457 asym_pause = state->remote_fc.asym_pause;
458
459 if (pause)
460 ethtool_link_ksettings_add_link_mode(ecmd,
461 lp_advertising,
462 Pause);
463 if (asym_pause)
464 ethtool_link_ksettings_add_link_mode(ecmd,
465 lp_advertising,
466 Asym_Pause);
467 }
468
prestera_port_link_mode_get(struct ethtool_link_ksettings * ecmd,struct prestera_port * port)469 static void prestera_port_link_mode_get(struct ethtool_link_ksettings *ecmd,
470 struct prestera_port *port)
471 {
472 struct prestera_port_mac_state *state = &port->state_mac;
473 u32 speed;
474 u8 duplex;
475 int err;
476
477 if (!port->state_mac.oper)
478 return;
479
480 if (state->speed == SPEED_UNKNOWN || state->duplex == DUPLEX_UNKNOWN) {
481 err = prestera_hw_port_mac_mode_get(port, NULL, &speed,
482 &duplex, NULL);
483 if (err) {
484 state->speed = SPEED_UNKNOWN;
485 state->duplex = DUPLEX_UNKNOWN;
486 } else {
487 state->speed = speed;
488 state->duplex = duplex == PRESTERA_PORT_DUPLEX_FULL ?
489 DUPLEX_FULL : DUPLEX_HALF;
490 }
491 }
492
493 ecmd->base.speed = port->state_mac.speed;
494 ecmd->base.duplex = port->state_mac.duplex;
495 }
496
prestera_port_mdix_get(struct ethtool_link_ksettings * ecmd,struct prestera_port * port)497 static void prestera_port_mdix_get(struct ethtool_link_ksettings *ecmd,
498 struct prestera_port *port)
499 {
500 struct prestera_port_phy_state *state = &port->state_phy;
501
502 if (prestera_hw_port_phy_mode_get(port,
503 &state->mdix, NULL, NULL, NULL)) {
504 netdev_warn(port->dev, "MDIX params get failed");
505 state->mdix = ETH_TP_MDI_INVALID;
506 }
507
508 ecmd->base.eth_tp_mdix = port->state_phy.mdix;
509 ecmd->base.eth_tp_mdix_ctrl = port->cfg_phy.mdix;
510 }
511
512 static int
prestera_ethtool_get_link_ksettings(struct net_device * dev,struct ethtool_link_ksettings * ecmd)513 prestera_ethtool_get_link_ksettings(struct net_device *dev,
514 struct ethtool_link_ksettings *ecmd)
515 {
516 struct prestera_port *port = netdev_priv(dev);
517
518 ethtool_link_ksettings_zero_link_mode(ecmd, supported);
519 ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
520 ethtool_link_ksettings_zero_link_mode(ecmd, lp_advertising);
521 ecmd->base.speed = SPEED_UNKNOWN;
522 ecmd->base.duplex = DUPLEX_UNKNOWN;
523
524 if (port->phy_link)
525 return phylink_ethtool_ksettings_get(port->phy_link, ecmd);
526
527 ecmd->base.autoneg = port->autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
528
529 if (port->caps.type == PRESTERA_PORT_TYPE_TP) {
530 ethtool_link_ksettings_add_link_mode(ecmd, supported, Autoneg);
531
532 if (netif_running(dev) &&
533 (port->autoneg ||
534 port->caps.transceiver == PRESTERA_PORT_TCVR_COPPER))
535 ethtool_link_ksettings_add_link_mode(ecmd, advertising,
536 Autoneg);
537 }
538
539 prestera_modes_to_eth(ecmd->link_modes.supported,
540 port->caps.supp_link_modes,
541 port->caps.supp_fec,
542 port->caps.type);
543
544 prestera_port_supp_types_get(ecmd, port);
545
546 if (netif_carrier_ok(dev))
547 prestera_port_link_mode_get(ecmd, port);
548
549 ecmd->base.port = prestera_port_type_get(port);
550
551 if (port->autoneg) {
552 if (netif_running(dev))
553 prestera_modes_to_eth(ecmd->link_modes.advertising,
554 port->adver_link_modes,
555 port->adver_fec,
556 port->caps.type);
557
558 if (netif_carrier_ok(dev) &&
559 port->caps.transceiver == PRESTERA_PORT_TCVR_COPPER)
560 prestera_port_remote_cap_get(ecmd, port);
561 }
562
563 if (port->caps.type == PRESTERA_PORT_TYPE_TP &&
564 port->caps.transceiver == PRESTERA_PORT_TCVR_COPPER)
565 prestera_port_mdix_get(ecmd, port);
566
567 return 0;
568 }
569
prestera_port_mdix_set(const struct ethtool_link_ksettings * ecmd,struct prestera_port * port)570 static int prestera_port_mdix_set(const struct ethtool_link_ksettings *ecmd,
571 struct prestera_port *port)
572 {
573 if (ecmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_INVALID &&
574 port->caps.transceiver == PRESTERA_PORT_TCVR_COPPER &&
575 port->caps.type == PRESTERA_PORT_TYPE_TP) {
576 port->cfg_phy.mdix = ecmd->base.eth_tp_mdix_ctrl;
577 return prestera_hw_port_phy_mode_set(port, port->cfg_phy.admin,
578 port->autoneg,
579 port->cfg_phy.mode,
580 port->adver_link_modes,
581 port->cfg_phy.mdix);
582 }
583 return 0;
584
585 }
586
prestera_port_link_mode_set(struct prestera_port * port,u32 speed,u8 duplex,u8 type)587 static int prestera_port_link_mode_set(struct prestera_port *port,
588 u32 speed, u8 duplex, u8 type)
589 {
590 u32 new_mode = PRESTERA_LINK_MODE_MAX;
591 u32 mode;
592 int err;
593
594 for (mode = 0; mode < PRESTERA_LINK_MODE_MAX; mode++) {
595 if (speed != SPEED_UNKNOWN &&
596 speed != port_link_modes[mode].speed)
597 continue;
598
599 if (duplex != DUPLEX_UNKNOWN &&
600 duplex != port_link_modes[mode].duplex)
601 continue;
602
603 if (!(port_link_modes[mode].pr_mask &
604 port->caps.supp_link_modes))
605 continue;
606
607 if (type != port_link_modes[mode].port_type)
608 continue;
609
610 new_mode = mode;
611 break;
612 }
613
614 if (new_mode == PRESTERA_LINK_MODE_MAX)
615 return -EOPNOTSUPP;
616
617 err = prestera_hw_port_phy_mode_set(port, port->cfg_phy.admin,
618 false, new_mode, 0,
619 port->cfg_phy.mdix);
620 if (err)
621 return err;
622
623 port->adver_fec = BIT(PRESTERA_PORT_FEC_OFF);
624 port->adver_link_modes = 0;
625 port->cfg_phy.mode = new_mode;
626 port->autoneg = false;
627
628 return 0;
629 }
630
631 static int
prestera_port_speed_duplex_set(const struct ethtool_link_ksettings * ecmd,struct prestera_port * port)632 prestera_port_speed_duplex_set(const struct ethtool_link_ksettings *ecmd,
633 struct prestera_port *port)
634 {
635 u8 duplex = DUPLEX_UNKNOWN;
636
637 if (ecmd->base.duplex != DUPLEX_UNKNOWN)
638 duplex = ecmd->base.duplex == DUPLEX_FULL ?
639 PRESTERA_PORT_DUPLEX_FULL : PRESTERA_PORT_DUPLEX_HALF;
640
641 return prestera_port_link_mode_set(port, ecmd->base.speed, duplex,
642 port->caps.type);
643 }
644
645 static int
prestera_ethtool_set_link_ksettings(struct net_device * dev,const struct ethtool_link_ksettings * ecmd)646 prestera_ethtool_set_link_ksettings(struct net_device *dev,
647 const struct ethtool_link_ksettings *ecmd)
648 {
649 struct prestera_port *port = netdev_priv(dev);
650 u64 adver_modes;
651 u8 adver_fec;
652 int err;
653
654 if (port->phy_link)
655 return phylink_ethtool_ksettings_set(port->phy_link, ecmd);
656
657 err = prestera_port_type_set(ecmd, port);
658 if (err)
659 return err;
660
661 if (port->caps.transceiver == PRESTERA_PORT_TCVR_COPPER) {
662 err = prestera_port_mdix_set(ecmd, port);
663 if (err)
664 return err;
665 }
666
667 prestera_modes_from_eth(ecmd->link_modes.advertising, &adver_modes,
668 &adver_fec, port->caps.type);
669
670 if (ecmd->base.autoneg == AUTONEG_ENABLE)
671 err = prestera_port_autoneg_set(port, adver_modes);
672 else
673 err = prestera_port_speed_duplex_set(ecmd, port);
674
675 return err;
676 }
677
prestera_ethtool_get_fecparam(struct net_device * dev,struct ethtool_fecparam * fecparam)678 static int prestera_ethtool_get_fecparam(struct net_device *dev,
679 struct ethtool_fecparam *fecparam)
680 {
681 struct prestera_port *port = netdev_priv(dev);
682 u8 active;
683 u32 mode;
684 int err;
685
686 err = prestera_hw_port_mac_mode_get(port, NULL, NULL, NULL, &active);
687 if (err)
688 return err;
689
690 fecparam->fec = 0;
691
692 for (mode = 0; mode < PRESTERA_PORT_FEC_MAX; mode++) {
693 if ((port_fec_caps[mode].pr_fec & port->caps.supp_fec) == 0)
694 continue;
695
696 fecparam->fec |= port_fec_caps[mode].eth_fec;
697 }
698
699 if (active < PRESTERA_PORT_FEC_MAX)
700 fecparam->active_fec = port_fec_caps[active].eth_fec;
701 else
702 fecparam->active_fec = ETHTOOL_FEC_AUTO;
703
704 return 0;
705 }
706
prestera_ethtool_set_fecparam(struct net_device * dev,struct ethtool_fecparam * fecparam)707 static int prestera_ethtool_set_fecparam(struct net_device *dev,
708 struct ethtool_fecparam *fecparam)
709 {
710 struct prestera_port *port = netdev_priv(dev);
711 struct prestera_port_mac_config cfg_mac;
712 u32 mode;
713 u8 fec;
714
715 if (port->autoneg) {
716 netdev_err(dev, "FEC set is not allowed while autoneg is on\n");
717 return -EINVAL;
718 }
719
720 if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) {
721 netdev_err(dev, "FEC set is not allowed on non-SFP ports\n");
722 return -EINVAL;
723 }
724
725 fec = PRESTERA_PORT_FEC_MAX;
726 for (mode = 0; mode < PRESTERA_PORT_FEC_MAX; mode++) {
727 if ((port_fec_caps[mode].eth_fec & fecparam->fec) &&
728 (port_fec_caps[mode].pr_fec & port->caps.supp_fec)) {
729 fec = mode;
730 break;
731 }
732 }
733
734 prestera_port_cfg_mac_read(port, &cfg_mac);
735
736 if (fec == cfg_mac.fec)
737 return 0;
738
739 if (fec == PRESTERA_PORT_FEC_MAX) {
740 netdev_err(dev, "Unsupported FEC requested");
741 return -EINVAL;
742 }
743
744 cfg_mac.fec = fec;
745
746 return prestera_port_cfg_mac_write(port, &cfg_mac);
747 }
748
prestera_ethtool_get_sset_count(struct net_device * dev,int sset)749 static int prestera_ethtool_get_sset_count(struct net_device *dev, int sset)
750 {
751 switch (sset) {
752 case ETH_SS_STATS:
753 return PRESTERA_STATS_CNT;
754 default:
755 return -EOPNOTSUPP;
756 }
757 }
758
prestera_ethtool_get_strings(struct net_device * dev,u32 stringset,u8 * data)759 static void prestera_ethtool_get_strings(struct net_device *dev,
760 u32 stringset, u8 *data)
761 {
762 if (stringset != ETH_SS_STATS)
763 return;
764
765 memcpy(data, prestera_cnt_name, sizeof(prestera_cnt_name));
766 }
767
prestera_ethtool_get_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)768 static void prestera_ethtool_get_stats(struct net_device *dev,
769 struct ethtool_stats *stats, u64 *data)
770 {
771 struct prestera_port *port = netdev_priv(dev);
772 struct prestera_port_stats *port_stats;
773
774 port_stats = &port->cached_hw_stats.stats;
775
776 memcpy(data, port_stats, sizeof(*port_stats));
777 }
778
prestera_ethtool_nway_reset(struct net_device * dev)779 static int prestera_ethtool_nway_reset(struct net_device *dev)
780 {
781 struct prestera_port *port = netdev_priv(dev);
782
783 if (netif_running(dev) &&
784 port->caps.transceiver == PRESTERA_PORT_TCVR_COPPER &&
785 port->caps.type == PRESTERA_PORT_TYPE_TP)
786 return prestera_hw_port_autoneg_restart(port);
787
788 return -EINVAL;
789 }
790
791 const struct ethtool_ops prestera_ethtool_ops = {
792 .get_drvinfo = prestera_ethtool_get_drvinfo,
793 .get_link_ksettings = prestera_ethtool_get_link_ksettings,
794 .set_link_ksettings = prestera_ethtool_set_link_ksettings,
795 .get_fecparam = prestera_ethtool_get_fecparam,
796 .set_fecparam = prestera_ethtool_set_fecparam,
797 .get_sset_count = prestera_ethtool_get_sset_count,
798 .get_strings = prestera_ethtool_get_strings,
799 .get_ethtool_stats = prestera_ethtool_get_stats,
800 .get_link = ethtool_op_get_link,
801 .nway_reset = prestera_ethtool_nway_reset
802 };
803