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mtd: nand: atmel: Relax tADL_min constraint
[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / sfc / mcdi_port.c
1 /****************************************************************************
2 * Driver for Solarflare network controllers and boards
3 * Copyright 2009-2013 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 "mcdi.h"
17 #include "mcdi_pcol.h"
18 #include "nic.h"
19 #include "selftest.h"
20
21 struct efx_mcdi_phy_data {
22 u32 flags;
23 u32 type;
24 u32 supported_cap;
25 u32 channel;
26 u32 port;
27 u32 stats_mask;
28 u8 name[20];
29 u32 media;
30 u32 mmd_mask;
31 u8 revision[20];
32 u32 forced_cap;
33 };
34
35 static int
36 efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
37 {
38 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN);
39 size_t outlen;
40 int rc;
41
42 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0);
43 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name));
44
45 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,
46 outbuf, sizeof(outbuf), &outlen);
47 if (rc)
48 goto fail;
49
50 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
51 rc = -EIO;
52 goto fail;
53 }
54
55 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);
56 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);
57 cfg->supported_cap =
58 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP);
59 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL);
60 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT);
61 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK);
62 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME),
63 sizeof(cfg->name));
64 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE);
65 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK);
66 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION),
67 sizeof(cfg->revision));
68
69 return 0;
70
71 fail:
72 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
73 return rc;
74 }
75
76 static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
77 u32 flags, u32 loopback_mode,
78 u32 loopback_speed)
79 {
80 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN);
81 int rc;
82
83 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
84
85 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities);
86 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags);
87 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode);
88 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed);
89
90 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),
91 NULL, 0, NULL);
92 return rc;
93 }
94
95 static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
96 {
97 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN);
98 size_t outlen;
99 int rc;
100
101 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,
102 outbuf, sizeof(outbuf), &outlen);
103 if (rc)
104 goto fail;
105
106 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST +
107 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) {
108 rc = -EIO;
109 goto fail;
110 }
111
112 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);
113
114 return 0;
115
116 fail:
117 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
118 return rc;
119 }
120
121 static int efx_mcdi_mdio_read(struct net_device *net_dev,
122 int prtad, int devad, u16 addr)
123 {
124 struct efx_nic *efx = netdev_priv(net_dev);
125 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
126 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
127 size_t outlen;
128 int rc;
129
130 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus);
131 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
132 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
133 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
134
135 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
136 outbuf, sizeof(outbuf), &outlen);
137 if (rc)
138 return rc;
139
140 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) !=
141 MC_CMD_MDIO_STATUS_GOOD)
142 return -EIO;
143
144 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
145 }
146
147 static int efx_mcdi_mdio_write(struct net_device *net_dev,
148 int prtad, int devad, u16 addr, u16 value)
149 {
150 struct efx_nic *efx = netdev_priv(net_dev);
151 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
152 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
153 size_t outlen;
154 int rc;
155
156 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
157 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
158 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
159 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
160 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
161
162 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
163 outbuf, sizeof(outbuf), &outlen);
164 if (rc)
165 return rc;
166
167 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
168 MC_CMD_MDIO_STATUS_GOOD)
169 return -EIO;
170
171 return 0;
172 }
173
174 static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
175 {
176 u32 result = 0;
177
178 switch (media) {
179 case MC_CMD_MEDIA_KX4:
180 result |= SUPPORTED_Backplane;
181 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
182 result |= SUPPORTED_1000baseKX_Full;
183 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
184 result |= SUPPORTED_10000baseKX4_Full;
185 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
186 result |= SUPPORTED_40000baseKR4_Full;
187 break;
188
189 case MC_CMD_MEDIA_XFP:
190 case MC_CMD_MEDIA_SFP_PLUS:
191 case MC_CMD_MEDIA_QSFP_PLUS:
192 result |= SUPPORTED_FIBRE;
193 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
194 result |= SUPPORTED_1000baseT_Full;
195 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
196 result |= SUPPORTED_10000baseT_Full;
197 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
198 result |= SUPPORTED_40000baseCR4_Full;
199 break;
200
201 case MC_CMD_MEDIA_BASE_T:
202 result |= SUPPORTED_TP;
203 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
204 result |= SUPPORTED_10baseT_Half;
205 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
206 result |= SUPPORTED_10baseT_Full;
207 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
208 result |= SUPPORTED_100baseT_Half;
209 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
210 result |= SUPPORTED_100baseT_Full;
211 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
212 result |= SUPPORTED_1000baseT_Half;
213 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
214 result |= SUPPORTED_1000baseT_Full;
215 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
216 result |= SUPPORTED_10000baseT_Full;
217 break;
218 }
219
220 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
221 result |= SUPPORTED_Pause;
222 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
223 result |= SUPPORTED_Asym_Pause;
224 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
225 result |= SUPPORTED_Autoneg;
226
227 return result;
228 }
229
230 static u32 ethtool_to_mcdi_cap(u32 cap)
231 {
232 u32 result = 0;
233
234 if (cap & SUPPORTED_10baseT_Half)
235 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
236 if (cap & SUPPORTED_10baseT_Full)
237 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
238 if (cap & SUPPORTED_100baseT_Half)
239 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
240 if (cap & SUPPORTED_100baseT_Full)
241 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
242 if (cap & SUPPORTED_1000baseT_Half)
243 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
244 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
245 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
246 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
247 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
248 if (cap & (SUPPORTED_40000baseCR4_Full | SUPPORTED_40000baseKR4_Full))
249 result |= (1 << MC_CMD_PHY_CAP_40000FDX_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
260 static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
261 {
262 struct efx_mcdi_phy_data *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_OUT_TXDIS_LBN))
269 supported |= PHY_MODE_TX_DISABLED;
270 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
271 supported |= PHY_MODE_LOW_POWER;
272 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_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_IN_TXDIS_LBN);
280 if (mode & PHY_MODE_LOW_POWER)
281 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
282 if (mode & PHY_MODE_OFF)
283 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
284
285 return flags;
286 }
287
288 static 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 case MC_CMD_MEDIA_QSFP_PLUS:
299 return PORT_FIBRE;
300
301 case MC_CMD_MEDIA_BASE_T:
302 return PORT_TP;
303
304 default:
305 return PORT_OTHER;
306 }
307 }
308
309 static void efx_mcdi_phy_decode_link(struct efx_nic *efx,
310 struct efx_link_state *link_state,
311 u32 speed, u32 flags, u32 fcntl)
312 {
313 switch (fcntl) {
314 case MC_CMD_FCNTL_AUTO:
315 WARN_ON(1); /* This is not a link mode */
316 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
317 break;
318 case MC_CMD_FCNTL_BIDIR:
319 link_state->fc = EFX_FC_TX | EFX_FC_RX;
320 break;
321 case MC_CMD_FCNTL_RESPOND:
322 link_state->fc = EFX_FC_RX;
323 break;
324 default:
325 WARN_ON(1);
326 case MC_CMD_FCNTL_OFF:
327 link_state->fc = 0;
328 break;
329 }
330
331 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
332 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
333 link_state->speed = speed;
334 }
335
336 static int efx_mcdi_phy_probe(struct efx_nic *efx)
337 {
338 struct efx_mcdi_phy_data *phy_data;
339 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
340 u32 caps;
341 int rc;
342
343 /* Initialise and populate phy_data */
344 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
345 if (phy_data == NULL)
346 return -ENOMEM;
347
348 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
349 if (rc != 0)
350 goto fail;
351
352 /* Read initial link advertisement */
353 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
354 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
355 outbuf, sizeof(outbuf), NULL);
356 if (rc)
357 goto fail;
358
359 /* Fill out nic state */
360 efx->phy_data = phy_data;
361 efx->phy_type = phy_data->type;
362
363 efx->mdio_bus = phy_data->channel;
364 efx->mdio.prtad = phy_data->port;
365 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
366 efx->mdio.mode_support = 0;
367 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
368 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
369 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
370 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
371
372 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
373 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
374 efx->link_advertising =
375 mcdi_to_ethtool_cap(phy_data->media, caps);
376 else
377 phy_data->forced_cap = caps;
378
379 /* Assert that we can map efx -> mcdi loopback modes */
380 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
381 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
382 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
383 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
384 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
385 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
386 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
387 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
388 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
389 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
390 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
391 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
392 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
393 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
394 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
395 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
396 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
397 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
398 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
399 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
400 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
401 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
402 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
403 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
404 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
405 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
406 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
407
408 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
409 if (rc != 0)
410 goto fail;
411 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
412 * but by convention we don't */
413 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
414
415 /* Set the initial link mode */
416 efx_mcdi_phy_decode_link(
417 efx, &efx->link_state,
418 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
419 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
420 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
421
422 /* Default to Autonegotiated flow control if the PHY supports it */
423 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
424 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
425 efx->wanted_fc |= EFX_FC_AUTO;
426 efx_link_set_wanted_fc(efx, efx->wanted_fc);
427
428 return 0;
429
430 fail:
431 kfree(phy_data);
432 return rc;
433 }
434
435 int efx_mcdi_port_reconfigure(struct efx_nic *efx)
436 {
437 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
438 u32 caps = (efx->link_advertising ?
439 ethtool_to_mcdi_cap(efx->link_advertising) :
440 phy_cfg->forced_cap);
441
442 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
443 efx->loopback_mode, 0);
444 }
445
446 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are
447 * supported by the link partner. Warn the user if this isn't the case
448 */
449 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
450 {
451 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
452 u32 rmtadv;
453
454 /* The link partner capabilities are only relevant if the
455 * link supports flow control autonegotiation */
456 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
457 return;
458
459 /* If flow control autoneg is supported and enabled, then fine */
460 if (efx->wanted_fc & EFX_FC_AUTO)
461 return;
462
463 rmtadv = 0;
464 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
465 rmtadv |= ADVERTISED_Pause;
466 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
467 rmtadv |= ADVERTISED_Asym_Pause;
468
469 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
470 netif_err(efx, link, efx->net_dev,
471 "warning: link partner doesn't support pause frames");
472 }
473
474 static bool efx_mcdi_phy_poll(struct efx_nic *efx)
475 {
476 struct efx_link_state old_state = efx->link_state;
477 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
478 int rc;
479
480 WARN_ON(!mutex_is_locked(&efx->mac_lock));
481
482 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
483
484 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
485 outbuf, sizeof(outbuf), NULL);
486 if (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 return !efx_link_state_equal(&efx->link_state, &old_state);
496 }
497
498 static void efx_mcdi_phy_remove(struct efx_nic *efx)
499 {
500 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
501
502 efx->phy_data = NULL;
503 kfree(phy_data);
504 }
505
506 static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx,
507 struct ethtool_link_ksettings *cmd)
508 {
509 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
510 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
511 int rc;
512 u32 supported, advertising, lp_advertising;
513
514 supported = mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
515 advertising = efx->link_advertising;
516 cmd->base.speed = efx->link_state.speed;
517 cmd->base.duplex = efx->link_state.fd;
518 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);
519 cmd->base.phy_address = phy_cfg->port;
520 cmd->base.autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
521 cmd->base.mdio_support = (efx->mdio.mode_support &
522 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
523
524 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
525 supported);
526 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
527 advertising);
528
529 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
530 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
531 outbuf, sizeof(outbuf), NULL);
532 if (rc)
533 return;
534 lp_advertising =
535 mcdi_to_ethtool_cap(phy_cfg->media,
536 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
537
538 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
539 lp_advertising);
540 }
541
542 static int
543 efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
544 const struct ethtool_link_ksettings *cmd)
545 {
546 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
547 u32 caps;
548 int rc;
549 u32 advertising;
550
551 ethtool_convert_link_mode_to_legacy_u32(&advertising,
552 cmd->link_modes.advertising);
553
554 if (cmd->base.autoneg) {
555 caps = (ethtool_to_mcdi_cap(advertising) |
556 1 << MC_CMD_PHY_CAP_AN_LBN);
557 } else if (cmd->base.duplex) {
558 switch (cmd->base.speed) {
559 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
560 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
561 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
562 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
563 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
564 default: return -EINVAL;
565 }
566 } else {
567 switch (cmd->base.speed) {
568 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
569 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
570 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
571 default: return -EINVAL;
572 }
573 }
574
575 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
576 efx->loopback_mode, 0);
577 if (rc)
578 return rc;
579
580 if (cmd->base.autoneg) {
581 efx_link_set_advertising(
582 efx, advertising | ADVERTISED_Autoneg);
583 phy_cfg->forced_cap = 0;
584 } else {
585 efx_link_set_advertising(efx, 0);
586 phy_cfg->forced_cap = caps;
587 }
588 return 0;
589 }
590
591 static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
592 {
593 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
594 size_t outlen;
595 int rc;
596
597 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
598
599 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
600 outbuf, sizeof(outbuf), &outlen);
601 if (rc)
602 return rc;
603
604 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
605 return -EIO;
606 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)
607 return -EINVAL;
608
609 return 0;
610 }
611
612 static const char *const mcdi_sft9001_cable_diag_names[] = {
613 "cable.pairA.length",
614 "cable.pairB.length",
615 "cable.pairC.length",
616 "cable.pairD.length",
617 "cable.pairA.status",
618 "cable.pairB.status",
619 "cable.pairC.status",
620 "cable.pairD.status",
621 };
622
623 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
624 int *results)
625 {
626 unsigned int retry, i, count = 0;
627 size_t outlen;
628 u32 status;
629 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
630 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
631 u8 *ptr;
632 int rc;
633
634 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
635 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
636 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
637 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
638 if (rc)
639 goto out;
640
641 /* Wait up to 10s for BIST to finish */
642 for (retry = 0; retry < 100; ++retry) {
643 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
644 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
645 outbuf, sizeof(outbuf), &outlen);
646 if (rc)
647 goto out;
648
649 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
650 if (status != MC_CMD_POLL_BIST_RUNNING)
651 goto finished;
652
653 msleep(100);
654 }
655
656 rc = -ETIMEDOUT;
657 goto out;
658
659 finished:
660 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
661
662 /* SFT9001 specific cable diagnostics output */
663 if (efx->phy_type == PHY_TYPE_SFT9001B &&
664 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
665 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
666 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
667 if (status == MC_CMD_POLL_BIST_PASSED &&
668 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
669 for (i = 0; i < 8; i++) {
670 results[count + i] =
671 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
672 EFX_DWORD_0);
673 }
674 }
675 count += 8;
676 }
677 rc = count;
678
679 out:
680 return rc;
681 }
682
683 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
684 unsigned flags)
685 {
686 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
687 u32 mode;
688 int rc;
689
690 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
691 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
692 if (rc < 0)
693 return rc;
694
695 results += rc;
696 }
697
698 /* If we support both LONG and SHORT, then run each in response to
699 * break or not. Otherwise, run the one we support */
700 mode = 0;
701 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
702 if ((flags & ETH_TEST_FL_OFFLINE) &&
703 (phy_cfg->flags &
704 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
705 mode = MC_CMD_PHY_BIST_CABLE_LONG;
706 else
707 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
708 } else if (phy_cfg->flags &
709 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
710 mode = MC_CMD_PHY_BIST_CABLE_LONG;
711
712 if (mode != 0) {
713 rc = efx_mcdi_bist(efx, mode, results);
714 if (rc < 0)
715 return rc;
716 results += rc;
717 }
718
719 return 0;
720 }
721
722 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
723 unsigned int index)
724 {
725 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
726
727 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
728 if (index == 0)
729 return "bist";
730 --index;
731 }
732
733 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
734 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
735 if (index == 0)
736 return "cable";
737 --index;
738
739 if (efx->phy_type == PHY_TYPE_SFT9001B) {
740 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
741 return mcdi_sft9001_cable_diag_names[index];
742 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
743 }
744 }
745
746 return NULL;
747 }
748
749 #define SFP_PAGE_SIZE 128
750 #define SFP_NUM_PAGES 2
751 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
752 struct ethtool_eeprom *ee, u8 *data)
753 {
754 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
755 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
756 size_t outlen;
757 int rc;
758 unsigned int payload_len;
759 unsigned int space_remaining = ee->len;
760 unsigned int page;
761 unsigned int page_off;
762 unsigned int to_copy;
763 u8 *user_data = data;
764
765 BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN);
766
767 page_off = ee->offset % SFP_PAGE_SIZE;
768 page = ee->offset / SFP_PAGE_SIZE;
769
770 while (space_remaining && (page < SFP_NUM_PAGES)) {
771 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
772
773 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO,
774 inbuf, sizeof(inbuf),
775 outbuf, sizeof(outbuf),
776 &outlen);
777 if (rc)
778 return rc;
779
780 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
781 SFP_PAGE_SIZE))
782 return -EIO;
783
784 payload_len = MCDI_DWORD(outbuf,
785 GET_PHY_MEDIA_INFO_OUT_DATALEN);
786 if (payload_len != SFP_PAGE_SIZE)
787 return -EIO;
788
789 /* Copy as much as we can into data */
790 payload_len -= page_off;
791 to_copy = (space_remaining < payload_len) ?
792 space_remaining : payload_len;
793
794 memcpy(user_data,
795 MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off,
796 to_copy);
797
798 space_remaining -= to_copy;
799 user_data += to_copy;
800 page_off = 0;
801 page++;
802 }
803
804 return 0;
805 }
806
807 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
808 struct ethtool_modinfo *modinfo)
809 {
810 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
811
812 switch (phy_cfg->media) {
813 case MC_CMD_MEDIA_SFP_PLUS:
814 modinfo->type = ETH_MODULE_SFF_8079;
815 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
816 return 0;
817 default:
818 return -EOPNOTSUPP;
819 }
820 }
821
822 static const struct efx_phy_operations efx_mcdi_phy_ops = {
823 .probe = efx_mcdi_phy_probe,
824 .init = efx_port_dummy_op_int,
825 .reconfigure = efx_mcdi_port_reconfigure,
826 .poll = efx_mcdi_phy_poll,
827 .fini = efx_port_dummy_op_void,
828 .remove = efx_mcdi_phy_remove,
829 .get_link_ksettings = efx_mcdi_phy_get_link_ksettings,
830 .set_link_ksettings = efx_mcdi_phy_set_link_ksettings,
831 .test_alive = efx_mcdi_phy_test_alive,
832 .run_tests = efx_mcdi_phy_run_tests,
833 .test_name = efx_mcdi_phy_test_name,
834 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
835 .get_module_info = efx_mcdi_phy_get_module_info,
836 };
837
838 u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
839 {
840 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
841
842 return phy_data->supported_cap;
843 }
844
845 static unsigned int efx_mcdi_event_link_speed[] = {
846 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
847 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
848 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
849 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000,
850 };
851
852 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
853 {
854 u32 flags, fcntl, speed, lpa;
855
856 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
857 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
858 speed = efx_mcdi_event_link_speed[speed];
859
860 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
861 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
862 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
863
864 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
865 * which is only run after flushing the event queues. Therefore, it
866 * is safe to modify the link state outside of the mac_lock here.
867 */
868 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
869
870 efx_mcdi_phy_check_fcntl(efx, lpa);
871
872 efx_link_status_changed(efx);
873 }
874
875 int efx_mcdi_set_mac(struct efx_nic *efx)
876 {
877 u32 fcntl;
878 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
879
880 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);
881
882 /* This has no effect on EF10 */
883 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),
884 efx->net_dev->dev_addr);
885
886 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
887 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
888 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
889
890 /* Set simple MAC filter for Siena */
891 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT,
892 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter);
893
894 switch (efx->wanted_fc) {
895 case EFX_FC_RX | EFX_FC_TX:
896 fcntl = MC_CMD_FCNTL_BIDIR;
897 break;
898 case EFX_FC_RX:
899 fcntl = MC_CMD_FCNTL_RESPOND;
900 break;
901 default:
902 fcntl = MC_CMD_FCNTL_OFF;
903 break;
904 }
905 if (efx->wanted_fc & EFX_FC_AUTO)
906 fcntl = MC_CMD_FCNTL_AUTO;
907 if (efx->fc_disable)
908 fcntl = MC_CMD_FCNTL_OFF;
909
910 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
911
912 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
913 NULL, 0, NULL);
914 }
915
916 bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
917 {
918 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
919 size_t outlength;
920 int rc;
921
922 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
923
924 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
925 outbuf, sizeof(outbuf), &outlength);
926 if (rc)
927 return true;
928
929 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
930 }
931
932 enum efx_stats_action {
933 EFX_STATS_ENABLE,
934 EFX_STATS_DISABLE,
935 EFX_STATS_PULL,
936 };
937
938 static int efx_mcdi_mac_stats(struct efx_nic *efx,
939 enum efx_stats_action action, int clear)
940 {
941 struct efx_ef10_nic_data *nic_data = efx->nic_data;
942 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
943 int rc;
944 int change = action == EFX_STATS_PULL ? 0 : 1;
945 int enable = action == EFX_STATS_ENABLE ? 1 : 0;
946 int period = action == EFX_STATS_ENABLE ? 1000 : 0;
947 dma_addr_t dma_addr = efx->stats_buffer.dma_addr;
948 u32 dma_len = action != EFX_STATS_DISABLE ?
949 MC_CMD_MAC_NSTATS * sizeof(u64) : 0;
950
951 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
952
953 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);
954 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD,
955 MAC_STATS_IN_DMA, !!enable,
956 MAC_STATS_IN_CLEAR, clear,
957 MAC_STATS_IN_PERIODIC_CHANGE, change,
958 MAC_STATS_IN_PERIODIC_ENABLE, enable,
959 MAC_STATS_IN_PERIODIC_CLEAR, 0,
960 MAC_STATS_IN_PERIODIC_NOEVENT, 1,
961 MAC_STATS_IN_PERIOD_MS, period);
962 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
963 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id);
964
965 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
966 NULL, 0, NULL);
967 /* Expect ENOENT if DMA queues have not been set up */
968 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues)))
969 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf),
970 NULL, 0, rc);
971 return rc;
972 }
973
974 void efx_mcdi_mac_start_stats(struct efx_nic *efx)
975 {
976 __le64 *dma_stats = efx->stats_buffer.addr;
977
978 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
979
980 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0);
981 }
982
983 void efx_mcdi_mac_stop_stats(struct efx_nic *efx)
984 {
985 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0);
986 }
987
988 #define EFX_MAC_STATS_WAIT_US 100
989 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10
990
991 void efx_mcdi_mac_pull_stats(struct efx_nic *efx)
992 {
993 __le64 *dma_stats = efx->stats_buffer.addr;
994 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS;
995
996 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
997 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0);
998
999 while (dma_stats[MC_CMD_MAC_GENERATION_END] ==
1000 EFX_MC_STATS_GENERATION_INVALID &&
1001 attempts-- != 0)
1002 udelay(EFX_MAC_STATS_WAIT_US);
1003 }
1004
1005 int efx_mcdi_port_probe(struct efx_nic *efx)
1006 {
1007 int rc;
1008
1009 /* Hook in PHY operations table */
1010 efx->phy_op = &efx_mcdi_phy_ops;
1011
1012 /* Set up MDIO structure for PHY */
1013 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
1014 efx->mdio.mdio_read = efx_mcdi_mdio_read;
1015 efx->mdio.mdio_write = efx_mcdi_mdio_write;
1016
1017 /* Fill out MDIO structure, loopback modes, and initial link state */
1018 rc = efx->phy_op->probe(efx);
1019 if (rc != 0)
1020 return rc;
1021
1022 /* Allocate buffer for stats */
1023 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
1024 MC_CMD_MAC_NSTATS * sizeof(u64), GFP_KERNEL);
1025 if (rc)
1026 return rc;
1027 netif_dbg(efx, probe, efx->net_dev,
1028 "stats buffer at %llx (virt %p phys %llx)\n",
1029 (u64)efx->stats_buffer.dma_addr,
1030 efx->stats_buffer.addr,
1031 (u64)virt_to_phys(efx->stats_buffer.addr));
1032
1033 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1);
1034
1035 return 0;
1036 }
1037
1038 void efx_mcdi_port_remove(struct efx_nic *efx)
1039 {
1040 efx->phy_op->remove(efx);
1041 efx_nic_free_buffer(efx, &efx->stats_buffer);
1042 }
1043
1044 /* Get physical port number (EF10 only; on Siena it is same as PF number) */
1045 int efx_mcdi_port_get_number(struct efx_nic *efx)
1046 {
1047 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN);
1048 int rc;
1049
1050 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0,
1051 outbuf, sizeof(outbuf), NULL);
1052 if (rc)
1053 return rc;
1054
1055 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT);
1056 }
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