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Merge remote-tracking branch 'cleancache/linux-next'
[linux-2.6/next.git] / drivers / net / sfc / mcdi_phy.c
blob6c63ab0710af0bbdcc95c8b9c5267f92615ff20d
1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2009-2010 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
14 #include <linux/slab.h>
15 #include "efx.h"
16 #include "phy.h"
17 #include "mcdi.h"
18 #include "mcdi_pcol.h"
19 #include "nic.h"
20 #include "selftest.h"
21
22 struct efx_mcdi_phy_data {
23 u32 flags;
24 u32 type;
25 u32 supported_cap;
26 u32 channel;
27 u32 port;
28 u32 stats_mask;
29 u8 name[20];
30 u32 media;
31 u32 mmd_mask;
32 u8 revision[20];
33 u32 forced_cap;
34 };
35
36 static int
37 efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
38 {
39 u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN];
40 size_t outlen;
41 int rc;
42
43 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0);
44 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name));
45
46 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,
47 outbuf, sizeof(outbuf), &outlen);
48 if (rc)
49 goto fail;
50
51 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
52 rc = -EIO;
53 goto fail;
54 }
55
56 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);
57 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);
58 cfg->supported_cap =
59 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP);
60 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL);
61 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT);
62 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK);
63 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME),
64 sizeof(cfg->name));
65 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE);
66 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK);
67 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION),
68 sizeof(cfg->revision));
69
70 return 0;
71
72 fail:
73 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
74 return rc;
75 }
76
77 static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
78 u32 flags, u32 loopback_mode,
79 u32 loopback_speed)
80 {
81 u8 inbuf[MC_CMD_SET_LINK_IN_LEN];
82 int rc;
83
84 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
85
86 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities);
87 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags);
88 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode);
89 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed);
90
91 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),
92 NULL, 0, NULL);
93 if (rc)
94 goto fail;
95
96 return 0;
97
98 fail:
99 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
100 return rc;
101 }
102
103 static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
104 {
105 u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN];
106 size_t outlen;
107 int rc;
108
109 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,
110 outbuf, sizeof(outbuf), &outlen);
111 if (rc)
112 goto fail;
113
114 if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) {
115 rc = -EIO;
116 goto fail;
117 }
118
119 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_SUGGESTED);
120
121 return 0;
122
123 fail:
124 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
125 return rc;
126 }
127
128 int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus,
129 unsigned int prtad, unsigned int devad, u16 addr,
130 u16 *value_out, u32 *status_out)
131 {
132 u8 inbuf[MC_CMD_MDIO_READ_IN_LEN];
133 u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN];
134 size_t outlen;
135 int rc;
136
137 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, bus);
138 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
139 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
140 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
141
142 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
143 outbuf, sizeof(outbuf), &outlen);
144 if (rc)
145 goto fail;
146
147 *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
148 *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS);
149 return 0;
150
151 fail:
152 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
153 return rc;
154 }
155
156 int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus,
157 unsigned int prtad, unsigned int devad, u16 addr,
158 u16 value, u32 *status_out)
159 {
160 u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN];
161 u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN];
162 size_t outlen;
163 int rc;
164
165 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, bus);
166 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
167 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
168 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
169 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
170
171 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
172 outbuf, sizeof(outbuf), &outlen);
173 if (rc)
174 goto fail;
175
176 *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS);
177 return 0;
178
179 fail:
180 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
181 return rc;
182 }
183
184 static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
185 {
186 u32 result = 0;
187
188 switch (media) {
189 case MC_CMD_MEDIA_KX4:
190 result |= SUPPORTED_Backplane;
191 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
192 result |= SUPPORTED_1000baseKX_Full;
193 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
194 result |= SUPPORTED_10000baseKX4_Full;
195 break;
196
197 case MC_CMD_MEDIA_XFP:
198 case MC_CMD_MEDIA_SFP_PLUS:
199 result |= SUPPORTED_FIBRE;
200 break;
201
202 case MC_CMD_MEDIA_BASE_T:
203 result |= SUPPORTED_TP;
204 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
205 result |= SUPPORTED_10baseT_Half;
206 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
207 result |= SUPPORTED_10baseT_Full;
208 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
209 result |= SUPPORTED_100baseT_Half;
210 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
211 result |= SUPPORTED_100baseT_Full;
212 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
213 result |= SUPPORTED_1000baseT_Half;
214 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
215 result |= SUPPORTED_1000baseT_Full;
216 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
217 result |= SUPPORTED_10000baseT_Full;
218 break;
219 }
220
221 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
222 result |= SUPPORTED_Pause;
223 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
224 result |= SUPPORTED_Asym_Pause;
225 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
226 result |= SUPPORTED_Autoneg;
227
228 return result;
229 }
230
231 static u32 ethtool_to_mcdi_cap(u32 cap)
232 {
233 u32 result = 0;
234
235 if (cap & SUPPORTED_10baseT_Half)
236 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
237 if (cap & SUPPORTED_10baseT_Full)
238 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
239 if (cap & SUPPORTED_100baseT_Half)
240 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
241 if (cap & SUPPORTED_100baseT_Full)
242 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
243 if (cap & SUPPORTED_1000baseT_Half)
244 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
245 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
246 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
247 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
248 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
249 if (cap & SUPPORTED_Pause)
250 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
251 if (cap & SUPPORTED_Asym_Pause)
252 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
253 if (cap & SUPPORTED_Autoneg)
254 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
255
256 return result;
257 }
258
259 static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
260 {
261 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
262 enum efx_phy_mode mode, supported;
263 u32 flags;
264
265 /* TODO: Advertise the capabilities supported by this PHY */
266 supported = 0;
267 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_TXDIS_LBN))
268 supported |= PHY_MODE_TX_DISABLED;
269 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_LOWPOWER_LBN))
270 supported |= PHY_MODE_LOW_POWER;
271 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_POWEROFF_LBN))
272 supported |= PHY_MODE_OFF;
273
274 mode = efx->phy_mode & supported;
275
276 flags = 0;
277 if (mode & PHY_MODE_TX_DISABLED)
278 flags |= (1 << MC_CMD_SET_LINK_TXDIS_LBN);
279 if (mode & PHY_MODE_LOW_POWER)
280 flags |= (1 << MC_CMD_SET_LINK_LOWPOWER_LBN);
281 if (mode & PHY_MODE_OFF)
282 flags |= (1 << MC_CMD_SET_LINK_POWEROFF_LBN);
283
284 return flags;
285 }
286
287 static u32 mcdi_to_ethtool_media(u32 media)
288 {
289 switch (media) {
290 case MC_CMD_MEDIA_XAUI:
291 case MC_CMD_MEDIA_CX4:
292 case MC_CMD_MEDIA_KX4:
293 return PORT_OTHER;
294
295 case MC_CMD_MEDIA_XFP:
296 case MC_CMD_MEDIA_SFP_PLUS:
297 return PORT_FIBRE;
298
299 case MC_CMD_MEDIA_BASE_T:
300 return PORT_TP;
301
302 default:
303 return PORT_OTHER;
304 }
305 }
306
307 static int efx_mcdi_phy_probe(struct efx_nic *efx)
308 {
309 struct efx_mcdi_phy_data *phy_data;
310 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
311 u32 caps;
312 int rc;
313
314 /* Initialise and populate phy_data */
315 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
316 if (phy_data == NULL)
317 return -ENOMEM;
318
319 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
320 if (rc != 0)
321 goto fail;
322
323 /* Read initial link advertisement */
324 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
325 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
326 outbuf, sizeof(outbuf), NULL);
327 if (rc)
328 goto fail;
329
330 /* Fill out nic state */
331 efx->phy_data = phy_data;
332 efx->phy_type = phy_data->type;
333
334 efx->mdio_bus = phy_data->channel;
335 efx->mdio.prtad = phy_data->port;
336 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
337 efx->mdio.mode_support = 0;
338 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
339 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
340 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
341 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
342
343 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
344 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
345 efx->link_advertising =
346 mcdi_to_ethtool_cap(phy_data->media, caps);
347 else
348 phy_data->forced_cap = caps;
349
350 /* Assert that we can map efx -> mcdi loopback modes */
351 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
352 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
353 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
354 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
355 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
356 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
357 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
358 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
359 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
360 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
361 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
362 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
363 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
364 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
365 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
366 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
367 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
368 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
369 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
370 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
371 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
372 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
373 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
374 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
375 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
376 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
377 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
378
379 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
380 if (rc != 0)
381 goto fail;
382 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
383 * but by convention we don't */
384 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
385
386 /* Set the initial link mode */
387 efx_mcdi_phy_decode_link(
388 efx, &efx->link_state,
389 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
390 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
391 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
392
393 /* Default to Autonegotiated flow control if the PHY supports it */
394 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
395 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
396 efx->wanted_fc |= EFX_FC_AUTO;
397 efx_link_set_wanted_fc(efx, efx->wanted_fc);
398
399 return 0;
400
401 fail:
402 kfree(phy_data);
403 return rc;
404 }
405
406 int efx_mcdi_phy_reconfigure(struct efx_nic *efx)
407 {
408 struct efx_mcdi_phy_data *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
417 void 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 */
447 void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
448 {
449 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
450 u32 rmtadv;
451
452 /* The link partner capabilities are only relevant if the
453 * link supports flow control autonegotiation */
454 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
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 netif_err(efx, link, efx->net_dev,
469 "warning: link partner doesn't support pause frames");
470 }
471
472 static 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 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
486 __func__, rc);
487 efx->link_state.up = false;
488 } else {
489 efx_mcdi_phy_decode_link(
490 efx, &efx->link_state,
491 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
492 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
493 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
494 }
495
496 return !efx_link_state_equal(&efx->link_state, &old_state);
497 }
498
499 static void efx_mcdi_phy_remove(struct efx_nic *efx)
500 {
501 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
502
503 efx->phy_data = NULL;
504 kfree(phy_data);
505 }
506
507 static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
508 {
509 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
510 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
511 int rc;
512
513 ecmd->supported =
514 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
515 ecmd->advertising = efx->link_advertising;
516 ethtool_cmd_speed_set(ecmd, efx->link_state.speed);
517 ecmd->duplex = efx->link_state.fd;
518 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
519 ecmd->phy_address = phy_cfg->port;
520 ecmd->transceiver = XCVR_INTERNAL;
521 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
522 ecmd->mdio_support = (efx->mdio.mode_support &
523 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
524
525 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
526 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
527 outbuf, sizeof(outbuf), NULL);
528 if (rc) {
529 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
530 __func__, rc);
531 return;
532 }
533 ecmd->lp_advertising =
534 mcdi_to_ethtool_cap(phy_cfg->media,
535 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
536 }
537
538 static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
539 {
540 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
541 u32 caps;
542 int rc;
543
544 if (ecmd->autoneg) {
545 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
546 1 << MC_CMD_PHY_CAP_AN_LBN);
547 } else if (ecmd->duplex) {
548 switch (ethtool_cmd_speed(ecmd)) {
549 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
550 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
551 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
552 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
553 default: return -EINVAL;
554 }
555 } else {
556 switch (ethtool_cmd_speed(ecmd)) {
557 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
558 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
559 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
560 default: return -EINVAL;
561 }
562 }
563
564 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
565 efx->loopback_mode, 0);
566 if (rc)
567 return rc;
568
569 if (ecmd->autoneg) {
570 efx_link_set_advertising(
571 efx, ecmd->advertising | ADVERTISED_Autoneg);
572 phy_cfg->forced_cap = 0;
573 } else {
574 efx_link_set_advertising(efx, 0);
575 phy_cfg->forced_cap = caps;
576 }
577 return 0;
578 }
579
580 static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
581 {
582 u8 outbuf[MC_CMD_GET_PHY_STATE_OUT_LEN];
583 size_t outlen;
584 int rc;
585
586 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
587
588 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
589 outbuf, sizeof(outbuf), &outlen);
590 if (rc)
591 return rc;
592
593 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
594 return -EIO;
595 if (MCDI_DWORD(outbuf, GET_PHY_STATE_STATE) != MC_CMD_PHY_STATE_OK)
596 return -EINVAL;
597
598 return 0;
599 }
600
601 static const char *const mcdi_sft9001_cable_diag_names[] = {
602 "cable.pairA.length",
603 "cable.pairB.length",
604 "cable.pairC.length",
605 "cable.pairD.length",
606 "cable.pairA.status",
607 "cable.pairB.status",
608 "cable.pairC.status",
609 "cable.pairD.status",
610 };
611
612 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
613 int *results)
614 {
615 unsigned int retry, i, count = 0;
616 size_t outlen;
617 u32 status;
618 u8 *buf, *ptr;
619 int rc;
620
621 buf = kzalloc(0x100, GFP_KERNEL);
622 if (buf == NULL)
623 return -ENOMEM;
624
625 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
626 MCDI_SET_DWORD(buf, START_BIST_IN_TYPE, bist_mode);
627 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, buf, MC_CMD_START_BIST_IN_LEN,
628 NULL, 0, NULL);
629 if (rc)
630 goto out;
631
632 /* Wait up to 10s for BIST to finish */
633 for (retry = 0; retry < 100; ++retry) {
634 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
635 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
636 buf, 0x100, &outlen);
637 if (rc)
638 goto out;
639
640 status = MCDI_DWORD(buf, POLL_BIST_OUT_RESULT);
641 if (status != MC_CMD_POLL_BIST_RUNNING)
642 goto finished;
643
644 msleep(100);
645 }
646
647 rc = -ETIMEDOUT;
648 goto out;
649
650 finished:
651 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
652
653 /* SFT9001 specific cable diagnostics output */
654 if (efx->phy_type == PHY_TYPE_SFT9001B &&
655 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
656 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
657 ptr = MCDI_PTR(buf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
658 if (status == MC_CMD_POLL_BIST_PASSED &&
659 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
660 for (i = 0; i < 8; i++) {
661 results[count + i] =
662 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
663 EFX_DWORD_0);
664 }
665 }
666 count += 8;
667 }
668 rc = count;
669
670 out:
671 kfree(buf);
672
673 return rc;
674 }
675
676 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
677 unsigned flags)
678 {
679 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
680 u32 mode;
681 int rc;
682
683 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) {
684 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
685 if (rc < 0)
686 return rc;
687
688 results += rc;
689 }
690
691 /* If we support both LONG and SHORT, then run each in response to
692 * break or not. Otherwise, run the one we support */
693 mode = 0;
694 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN)) {
695 if ((flags & ETH_TEST_FL_OFFLINE) &&
696 (phy_cfg->flags &
697 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN)))
698 mode = MC_CMD_PHY_BIST_CABLE_LONG;
699 else
700 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
701 } else if (phy_cfg->flags &
702 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN))
703 mode = MC_CMD_PHY_BIST_CABLE_LONG;
704
705 if (mode != 0) {
706 rc = efx_mcdi_bist(efx, mode, results);
707 if (rc < 0)
708 return rc;
709 results += rc;
710 }
711
712 return 0;
713 }
714
715 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
716 unsigned int index)
717 {
718 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
719
720 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) {
721 if (index == 0)
722 return "bist";
723 --index;
724 }
725
726 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN) |
727 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN))) {
728 if (index == 0)
729 return "cable";
730 --index;
731
732 if (efx->phy_type == PHY_TYPE_SFT9001B) {
733 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
734 return mcdi_sft9001_cable_diag_names[index];
735 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
736 }
737 }
738
739 return NULL;
740 }
741
742 const struct efx_phy_operations efx_mcdi_phy_ops = {
743 .probe = efx_mcdi_phy_probe,
744 .init = efx_port_dummy_op_int,
745 .reconfigure = efx_mcdi_phy_reconfigure,
746 .poll = efx_mcdi_phy_poll,
747 .fini = efx_port_dummy_op_void,
748 .remove = efx_mcdi_phy_remove,
749 .get_settings = efx_mcdi_phy_get_settings,
750 .set_settings = efx_mcdi_phy_set_settings,
751 .test_alive = efx_mcdi_phy_test_alive,
752 .run_tests = efx_mcdi_phy_run_tests,
753 .test_name = efx_mcdi_phy_test_name,
754 };
linux-next