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atl1c: Add AR8151 v2 support and change L0s/L1 routine
[linux-block.git] / drivers / net / sfc / mcdi_phy.c
CommitLineData
afd4aea0
BH		 1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2009 Solarflare Communications Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
8 */
9
10/*
11 * Driver for PHY related operations via MCDI.
12 */
13
5a0e3ad6 14#include <linux/slab.h>
afd4aea0
BH		 15#include "efx.h"
16#include "phy.h"
17#include "mcdi.h"
18#include "mcdi_pcol.h"
19#include "mdio_10g.h"
affaf485
SH		 20#include "nic.h"
21#include "selftest.h"
afd4aea0
BH		 22
23struct efx_mcdi_phy_cfg {
24 u32 flags;
25 u32 type;
26 u32 supported_cap;
27 u32 channel;
28 u32 port;
29 u32 stats_mask;
30 u8 name[20];
31 u32 media;
32 u32 mmd_mask;
33 u8 revision[20];
34 u32 forced_cap;
35};
36
37static int
38efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_cfg *cfg)
39{
40 u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN];
41 size_t outlen;
42 int rc;
43
44 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0);
45 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name));
46
47 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,
48 outbuf, sizeof(outbuf), &outlen);
49 if (rc)
50 goto fail;
51
52 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
00bbb4a5 53 rc = -EIO;
afd4aea0
BH		 54 goto fail;
55 }
56
57 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);
58 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);
59 cfg->supported_cap =
60 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP);
61 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL);
62 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT);
63 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK);
64 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME),
65 sizeof(cfg->name));
66 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE);
67 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK);
68 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION),
69 sizeof(cfg->revision));
70
71 return 0;
72
73fail:
74 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
75 return rc;
76}
77
78static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
79 u32 flags, u32 loopback_mode,
80 u32 loopback_speed)
81{
82 u8 inbuf[MC_CMD_SET_LINK_IN_LEN];
83 int rc;
84
85 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
86
87 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities);
88 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags);
89 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode);
90 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed);
91
92 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),
93 NULL, 0, NULL);
94 if (rc)
95 goto fail;
96
97 return 0;
98
99fail:
100 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
101 return rc;
102}
103
104static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
105{
106 u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN];
107 size_t outlen;
108 int rc;
109
110 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,
111 outbuf, sizeof(outbuf), &outlen);
112 if (rc)
113 goto fail;
114
115 if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) {
00bbb4a5 116 rc = -EIO;
afd4aea0
BH		 117 goto fail;
118 }
119
120 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_SUGGESTED);
121
122 return 0;
123
124fail:
125 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
126 return rc;
127}
128
129int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus,
130 unsigned int prtad, unsigned int devad, u16 addr,
131 u16 *value_out, u32 *status_out)
132{
133 u8 inbuf[MC_CMD_MDIO_READ_IN_LEN];
134 u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN];
135 size_t outlen;
136 int rc;
137
138 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, bus);
139 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
140 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
141 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
142
143 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
144 outbuf, sizeof(outbuf), &outlen);
145 if (rc)
146 goto fail;
147
148 *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
149 *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS);
150 return 0;
151
152fail:
153 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
154 return rc;
155}
156
157int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus,
158 unsigned int prtad, unsigned int devad, u16 addr,
159 u16 value, u32 *status_out)
160{
161 u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN];
162 u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN];
163 size_t outlen;
164 int rc;
165
166 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, bus);
167 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
168 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
169 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
170 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
171
172 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
173 outbuf, sizeof(outbuf), &outlen);
174 if (rc)
175 goto fail;
176
177 *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS);
178 return 0;
179
180fail:
181 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
182 return rc;
183}
184
185static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
186{
187 u32 result = 0;
188
189 switch (media) {
190 case MC_CMD_MEDIA_KX4:
191 result |= SUPPORTED_Backplane;
192 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
193 result |= SUPPORTED_1000baseKX_Full;
194 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
195 result |= SUPPORTED_10000baseKX4_Full;
196 break;
197
198 case MC_CMD_MEDIA_XFP:
199 case MC_CMD_MEDIA_SFP_PLUS:
200 result |= SUPPORTED_FIBRE;
201 break;
202
203 case MC_CMD_MEDIA_BASE_T:
204 result |= SUPPORTED_TP;
205 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
206 result |= SUPPORTED_10baseT_Half;
207 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
208 result |= SUPPORTED_10baseT_Full;
209 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
210 result |= SUPPORTED_100baseT_Half;
211 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
212 result |= SUPPORTED_100baseT_Full;
213 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
214 result |= SUPPORTED_1000baseT_Half;
215 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
216 result |= SUPPORTED_1000baseT_Full;
217 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
218 result |= SUPPORTED_10000baseT_Full;
219 break;
220 }
221
222 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
223 result |= SUPPORTED_Pause;
224 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
225 result |= SUPPORTED_Asym_Pause;
226 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
227 result |= SUPPORTED_Autoneg;
228
229 return result;
230}
231
232static u32 ethtool_to_mcdi_cap(u32 cap)
233{
234 u32 result = 0;
235
236 if (cap & SUPPORTED_10baseT_Half)
237 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
238 if (cap & SUPPORTED_10baseT_Full)
239 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
240 if (cap & SUPPORTED_100baseT_Half)
241 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
242 if (cap & SUPPORTED_100baseT_Full)
243 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
244 if (cap & SUPPORTED_1000baseT_Half)
245 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
246 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
247 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
248 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
249 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
250 if (cap & SUPPORTED_Pause)
251 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
252 if (cap & SUPPORTED_Asym_Pause)
253 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
254 if (cap & SUPPORTED_Autoneg)
255 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
256
257 return result;
258}
259
260static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
261{
262 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
263 enum efx_phy_mode mode, supported;
264 u32 flags;
265
266 /* TODO: Advertise the capabilities supported by this PHY */
267 supported = 0;
268 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_TXDIS_LBN))
269 supported |= PHY_MODE_TX_DISABLED;
270 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_LOWPOWER_LBN))
271 supported |= PHY_MODE_LOW_POWER;
272 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_POWEROFF_LBN))
273 supported |= PHY_MODE_OFF;
274
275 mode = efx->phy_mode & supported;
276
277 flags = 0;
278 if (mode & PHY_MODE_TX_DISABLED)
279 flags |= (1 << MC_CMD_SET_LINK_TXDIS_LBN);
280 if (mode & PHY_MODE_LOW_POWER)
281 flags |= (1 << MC_CMD_SET_LINK_LOWPOWER_LBN);
282 if (mode & PHY_MODE_OFF)
283 flags |= (1 << MC_CMD_SET_LINK_POWEROFF_LBN);
284
285 return flags;
286}
287
288static u32 mcdi_to_ethtool_media(u32 media)
289{
290 switch (media) {
291 case MC_CMD_MEDIA_XAUI:
292 case MC_CMD_MEDIA_CX4:
293 case MC_CMD_MEDIA_KX4:
294 return PORT_OTHER;
295
296 case MC_CMD_MEDIA_XFP:
297 case MC_CMD_MEDIA_SFP_PLUS:
298 return PORT_FIBRE;
299
300 case MC_CMD_MEDIA_BASE_T:
301 return PORT_TP;
302
303 default:
304 return PORT_OTHER;
305 }
306}
307
308static int efx_mcdi_phy_probe(struct efx_nic *efx)
309{
ff3b00a0
SH		 310 struct efx_mcdi_phy_cfg *phy_data;
311 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
312 u32 caps;
afd4aea0
BH		 313 int rc;
314
ff3b00a0
SH		 315 /* Initialise and populate phy_data */
316 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
317 if (phy_data == NULL)
318 return -ENOMEM;
319
320 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
afd4aea0
BH		 321 if (rc != 0)
322 goto fail;
323
ff3b00a0
SH		 324 /* Read initial link advertisement */
325 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
326 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
327 outbuf, sizeof(outbuf), NULL);
328 if (rc)
329 goto fail;
330
331 /* Fill out nic state */
332 efx->phy_data = phy_data;
333 efx->phy_type = phy_data->type;
afd4aea0 334
ff3b00a0
SH		 335 efx->mdio_bus = phy_data->channel;
336 efx->mdio.prtad = phy_data->port;
337 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
afd4aea0 338 efx->mdio.mode_support = 0;
ff3b00a0 339 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
afd4aea0 340 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
ff3b00a0 341 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
afd4aea0
BH		 342 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
343
ff3b00a0
SH		 344 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
345 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
346 efx->link_advertising =
347 mcdi_to_ethtool_cap(phy_data->media, caps);
348 else
349 phy_data->forced_cap = caps;
350
afd4aea0
BH		 351 /* Assert that we can map efx -> mcdi loopback modes */
352 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
353 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
354 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
355 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
356 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
357 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
358 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
359 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
360 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
361 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
362 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
363 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
364 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
365 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
366 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
367 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
368 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
369 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
370 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
371 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
372 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
373 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
374 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
375 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
376 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
377 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
378 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
379
380 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
381 if (rc != 0)
382 goto fail;
383 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
384 * but by convention we don't */
385 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
386
7a6b8f6f
SH		 387 /* Set the initial link mode */
388 efx_mcdi_phy_decode_link(
389 efx, &efx->link_state,
390 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
391 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
392 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
393
394 /* Default to Autonegotiated flow control if the PHY supports it */
395 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
396 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
397 efx->wanted_fc |= EFX_FC_AUTO;
398
afd4aea0
BH		 399 return 0;
400
401fail:
402 kfree(phy_data);
403 return rc;
404}
405
406int efx_mcdi_phy_reconfigure(struct efx_nic *efx)
407{
408 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
409 u32 caps = (efx->link_advertising ?
410 ethtool_to_mcdi_cap(efx->link_advertising) :
411 phy_cfg->forced_cap);
412
413 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
414 efx->loopback_mode, 0);
415}
416
417void efx_mcdi_phy_decode_link(struct efx_nic *efx,
418 struct efx_link_state *link_state,
419 u32 speed, u32 flags, u32 fcntl)
420{
421 switch (fcntl) {
422 case MC_CMD_FCNTL_AUTO:
423 WARN_ON(1); /* This is not a link mode */
424 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
425 break;
426 case MC_CMD_FCNTL_BIDIR:
427 link_state->fc = EFX_FC_TX | EFX_FC_RX;
428 break;
429 case MC_CMD_FCNTL_RESPOND:
430 link_state->fc = EFX_FC_RX;
431 break;
432 default:
433 WARN_ON(1);
434 case MC_CMD_FCNTL_OFF:
435 link_state->fc = 0;
436 break;
437 }
438
439 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_LINK_UP_LBN));
440 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_FULL_DUPLEX_LBN));
441 link_state->speed = speed;
442}
443
444/* Verify that the forced flow control settings (!EFX_FC_AUTO) are
445 * supported by the link partner. Warn the user if this isn't the case
446 */
447void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
448{
449 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
450 u32 rmtadv;
451
452 /* The link partner capabilities are only relevent if the
453 * link supports flow control autonegotiation */
7a6b8f6f 454 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
afd4aea0
BH		 455 return;
456
457 /* If flow control autoneg is supported and enabled, then fine */
458 if (efx->wanted_fc & EFX_FC_AUTO)
459 return;
460
461 rmtadv = 0;
462 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
463 rmtadv |= ADVERTISED_Pause;
464 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
465 rmtadv |= ADVERTISED_Asym_Pause;
466
467 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
468 EFX_ERR(efx, "warning: link partner doesn't support "
469 "pause frames");
470}
471
472static bool efx_mcdi_phy_poll(struct efx_nic *efx)
473{
474 struct efx_link_state old_state = efx->link_state;
475 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
476 int rc;
477
478 WARN_ON(!mutex_is_locked(&efx->mac_lock));
479
480 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
481
482 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
483 outbuf, sizeof(outbuf), NULL);
484 if (rc) {
485 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
486 efx->link_state.up = false;
487 } else {
488 efx_mcdi_phy_decode_link(
489 efx, &efx->link_state,
490 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
491 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
492 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
493 }
494
495 return !efx_link_state_equal(&efx->link_state, &old_state);
496}
497
ff3b00a0 498static void efx_mcdi_phy_remove(struct efx_nic *efx)
afd4aea0
BH		 499{
500 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
501
502 efx->phy_data = NULL;
503 kfree(phy_data);
504}
505
506static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
507{
508 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
509 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
510 int rc;
511
512 ecmd->supported =
513 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
514 ecmd->advertising = efx->link_advertising;
515 ecmd->speed = efx->link_state.speed;
516 ecmd->duplex = efx->link_state.fd;
517 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
518 ecmd->phy_address = phy_cfg->port;
519 ecmd->transceiver = XCVR_INTERNAL;
520 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
521 ecmd->mdio_support = (efx->mdio.mode_support &
522 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
523
524 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
525 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
526 outbuf, sizeof(outbuf), NULL);
527 if (rc) {
528 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
529 return;
530 }
531 ecmd->lp_advertising =
532 mcdi_to_ethtool_cap(phy_cfg->media,
533 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
534}
535
536static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
537{
538 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
539 u32 caps;
540 int rc;
541
542 if (ecmd->autoneg) {
543 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
544 1 << MC_CMD_PHY_CAP_AN_LBN);
545 } else if (ecmd->duplex) {
546 switch (ecmd->speed) {
547 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
548 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
549 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
550 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
551 default: return -EINVAL;
552 }
553 } else {
554 switch (ecmd->speed) {
555 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
556 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
557 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
558 default: return -EINVAL;
559 }
560 }
561
562 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
563 efx->loopback_mode, 0);
564 if (rc)
565 return rc;
566
567 if (ecmd->autoneg) {
568 efx_link_set_advertising(
569 efx, ecmd->advertising | ADVERTISED_Autoneg);
570 phy_cfg->forced_cap = 0;
571 } else {
572 efx_link_set_advertising(efx, 0);
573 phy_cfg->forced_cap = caps;
574 }
575 return 0;
576}
577
4f16c073
BH		 578static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
579{
580 u8 outbuf[MC_CMD_GET_PHY_STATE_OUT_LEN];
581 size_t outlen;
582 int rc;
583
584 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
585
586 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
587 outbuf, sizeof(outbuf), &outlen);
588 if (rc)
589 return rc;
590
591 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
00bbb4a5 592 return -EIO;
4f16c073
BH		 593 if (MCDI_DWORD(outbuf, GET_PHY_STATE_STATE) != MC_CMD_PHY_STATE_OK)
594 return -EINVAL;
595
596 return 0;
597}
598
affaf485
SH		 599static const char *const mcdi_sft9001_cable_diag_names[] = {
600 "cable.pairA.length",
601 "cable.pairB.length",
602 "cable.pairC.length",
603 "cable.pairD.length",
604 "cable.pairA.status",
605 "cable.pairB.status",
606 "cable.pairC.status",
607 "cable.pairD.status",
608};
609
610static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
611 int *results)
612{
613 unsigned int retry, i, count = 0;
614 size_t outlen;
615 u32 status;
616 u8 *buf, *ptr;
617 int rc;
618
619 buf = kzalloc(0x100, GFP_KERNEL);
620 if (buf == NULL)
621 return -ENOMEM;
622
623 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
624 MCDI_SET_DWORD(buf, START_BIST_IN_TYPE, bist_mode);
625 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, buf, MC_CMD_START_BIST_IN_LEN,
626 NULL, 0, NULL);
627 if (rc)
628 goto out;
629
630 /* Wait up to 10s for BIST to finish */
631 for (retry = 0; retry < 100; ++retry) {
632 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
633 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
634 buf, 0x100, &outlen);
635 if (rc)
636 goto out;
637
638 status = MCDI_DWORD(buf, POLL_BIST_OUT_RESULT);
639 if (status != MC_CMD_POLL_BIST_RUNNING)
640 goto finished;
641
642 msleep(100);
643 }
644
645 rc = -ETIMEDOUT;
646 goto out;
647
648finished:
649 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
650
651 /* SFT9001 specific cable diagnostics output */
652 if (efx->phy_type == PHY_TYPE_SFT9001B &&
653 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
654 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
655 ptr = MCDI_PTR(buf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
656 if (status == MC_CMD_POLL_BIST_PASSED &&
657 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
658 for (i = 0; i < 8; i++) {
659 results[count + i] =
660 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
661 EFX_DWORD_0);
662 }
663 }
664 count += 8;
665 }
666 rc = count;
667
668out:
669 kfree(buf);
670
671 return rc;
672}
673
674static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
675 unsigned flags)
676{
677 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
678 u32 mode;
679 int rc;
680
681 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) {
682 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
683 if (rc < 0)
684 return rc;
685
686 results += rc;
687 }
688
689 /* If we support both LONG and SHORT, then run each in response to
690 * break or not. Otherwise, run the one we support */
691 mode = 0;
692 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN)) {
693 if ((flags & ETH_TEST_FL_OFFLINE) &&
694 (phy_cfg->flags &
695 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN)))
696 mode = MC_CMD_PHY_BIST_CABLE_LONG;
697 else
698 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
699 } else if (phy_cfg->flags &
700 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN))
701 mode = MC_CMD_PHY_BIST_CABLE_LONG;
702
703 if (mode != 0) {
704 rc = efx_mcdi_bist(efx, mode, results);
705 if (rc < 0)
706 return rc;
707 results += rc;
708 }
709
710 return 0;
711}
712
713const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index)
714{
715 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
716
717 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) {
718 if (index == 0)
719 return "bist";
720 --index;
721 }
722
723 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN) |
724 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN))) {
725 if (index == 0)
726 return "cable";
727 --index;
728
729 if (efx->phy_type == PHY_TYPE_SFT9001B) {
730 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
731 return mcdi_sft9001_cable_diag_names[index];
732 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
733 }
734 }
735
736 return NULL;
737}
738
afd4aea0
BH		 739struct efx_phy_operations efx_mcdi_phy_ops = {
740 .probe = efx_mcdi_phy_probe,
ff3b00a0 741 .init = efx_port_dummy_op_int,
afd4aea0
BH		 742 .reconfigure = efx_mcdi_phy_reconfigure,
743 .poll = efx_mcdi_phy_poll,
ff3b00a0
SH		 744 .fini = efx_port_dummy_op_void,
745 .remove = efx_mcdi_phy_remove,
afd4aea0
BH		 746 .get_settings = efx_mcdi_phy_get_settings,
747 .set_settings = efx_mcdi_phy_set_settings,
4f16c073 748 .test_alive = efx_mcdi_phy_test_alive,
affaf485
SH		 749 .run_tests = efx_mcdi_phy_run_tests,
750 .test_name = efx_mcdi_phy_test_name,
afd4aea0 751};
Linux 6.x block layer and io_uring tree(s)