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Linux 4.16.11
[linux/fpc-iii.git] / drivers / net / ethernet / sfc / mcdi_port.c
blobce8aabf9091e47acc1f19e74f42b4d99b2b871d6
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 void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset)
175 {
176 #define SET_BIT(name) __set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \
177 linkset)
178
179 bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS);
180 switch (media) {
181 case MC_CMD_MEDIA_KX4:
182 SET_BIT(Backplane);
183 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
184 SET_BIT(1000baseKX_Full);
185 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
186 SET_BIT(10000baseKX4_Full);
187 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
188 SET_BIT(40000baseKR4_Full);
189 break;
190
191 case MC_CMD_MEDIA_XFP:
192 case MC_CMD_MEDIA_SFP_PLUS:
193 case MC_CMD_MEDIA_QSFP_PLUS:
194 SET_BIT(FIBRE);
195 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
196 SET_BIT(1000baseT_Full);
197 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
198 SET_BIT(10000baseT_Full);
199 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
200 SET_BIT(40000baseCR4_Full);
201 if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN))
202 SET_BIT(100000baseCR4_Full);
203 if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN))
204 SET_BIT(25000baseCR_Full);
205 if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN))
206 SET_BIT(50000baseCR2_Full);
207 break;
208
209 case MC_CMD_MEDIA_BASE_T:
210 SET_BIT(TP);
211 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
212 SET_BIT(10baseT_Half);
213 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
214 SET_BIT(10baseT_Full);
215 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
216 SET_BIT(100baseT_Half);
217 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
218 SET_BIT(100baseT_Full);
219 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
220 SET_BIT(1000baseT_Half);
221 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
222 SET_BIT(1000baseT_Full);
223 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
224 SET_BIT(10000baseT_Full);
225 break;
226 }
227
228 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
229 SET_BIT(Pause);
230 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
231 SET_BIT(Asym_Pause);
232 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
233 SET_BIT(Autoneg);
234
235 #undef SET_BIT
236 }
237
238 static u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset)
239 {
240 u32 result = 0;
241
242 #define TEST_BIT(name) test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \
243 linkset)
244
245 if (TEST_BIT(10baseT_Half))
246 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
247 if (TEST_BIT(10baseT_Full))
248 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
249 if (TEST_BIT(100baseT_Half))
250 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
251 if (TEST_BIT(100baseT_Full))
252 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
253 if (TEST_BIT(1000baseT_Half))
254 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
255 if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full))
256 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
257 if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full))
258 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
259 if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full))
260 result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN);
261 if (TEST_BIT(100000baseCR4_Full))
262 result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN);
263 if (TEST_BIT(25000baseCR_Full))
264 result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN);
265 if (TEST_BIT(50000baseCR2_Full))
266 result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN);
267 if (TEST_BIT(Pause))
268 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
269 if (TEST_BIT(Asym_Pause))
270 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
271 if (TEST_BIT(Autoneg))
272 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
273
274 #undef TEST_BIT
275
276 return result;
277 }
278
279 static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
280 {
281 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
282 enum efx_phy_mode mode, supported;
283 u32 flags;
284
285 /* TODO: Advertise the capabilities supported by this PHY */
286 supported = 0;
287 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))
288 supported |= PHY_MODE_TX_DISABLED;
289 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
290 supported |= PHY_MODE_LOW_POWER;
291 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))
292 supported |= PHY_MODE_OFF;
293
294 mode = efx->phy_mode & supported;
295
296 flags = 0;
297 if (mode & PHY_MODE_TX_DISABLED)
298 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);
299 if (mode & PHY_MODE_LOW_POWER)
300 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
301 if (mode & PHY_MODE_OFF)
302 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
303
304 return flags;
305 }
306
307 static u8 mcdi_to_ethtool_media(u32 media)
308 {
309 switch (media) {
310 case MC_CMD_MEDIA_XAUI:
311 case MC_CMD_MEDIA_CX4:
312 case MC_CMD_MEDIA_KX4:
313 return PORT_OTHER;
314
315 case MC_CMD_MEDIA_XFP:
316 case MC_CMD_MEDIA_SFP_PLUS:
317 case MC_CMD_MEDIA_QSFP_PLUS:
318 return PORT_FIBRE;
319
320 case MC_CMD_MEDIA_BASE_T:
321 return PORT_TP;
322
323 default:
324 return PORT_OTHER;
325 }
326 }
327
328 static void efx_mcdi_phy_decode_link(struct efx_nic *efx,
329 struct efx_link_state *link_state,
330 u32 speed, u32 flags, u32 fcntl)
331 {
332 switch (fcntl) {
333 case MC_CMD_FCNTL_AUTO:
334 WARN_ON(1); /* This is not a link mode */
335 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
336 break;
337 case MC_CMD_FCNTL_BIDIR:
338 link_state->fc = EFX_FC_TX | EFX_FC_RX;
339 break;
340 case MC_CMD_FCNTL_RESPOND:
341 link_state->fc = EFX_FC_RX;
342 break;
343 default:
344 WARN_ON(1);
345 case MC_CMD_FCNTL_OFF:
346 link_state->fc = 0;
347 break;
348 }
349
350 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
351 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
352 link_state->speed = speed;
353 }
354
355 static int efx_mcdi_phy_probe(struct efx_nic *efx)
356 {
357 struct efx_mcdi_phy_data *phy_data;
358 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
359 u32 caps;
360 int rc;
361
362 /* Initialise and populate phy_data */
363 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
364 if (phy_data == NULL)
365 return -ENOMEM;
366
367 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
368 if (rc != 0)
369 goto fail;
370
371 /* Read initial link advertisement */
372 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
373 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
374 outbuf, sizeof(outbuf), NULL);
375 if (rc)
376 goto fail;
377
378 /* Fill out nic state */
379 efx->phy_data = phy_data;
380 efx->phy_type = phy_data->type;
381
382 efx->mdio_bus = phy_data->channel;
383 efx->mdio.prtad = phy_data->port;
384 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
385 efx->mdio.mode_support = 0;
386 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
387 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
388 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
389 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
390
391 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
392 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
393 mcdi_to_ethtool_linkset(phy_data->media, caps,
394 efx->link_advertising);
395 else
396 phy_data->forced_cap = caps;
397
398 /* Assert that we can map efx -> mcdi loopback modes */
399 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
400 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
401 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
402 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
403 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
404 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
405 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
406 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
407 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
408 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
409 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
410 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
411 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
412 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
413 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
414 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
415 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
416 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
417 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
418 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
419 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
420 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
421 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
422 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
423 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
424 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
425 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
426
427 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
428 if (rc != 0)
429 goto fail;
430 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
431 * but by convention we don't */
432 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
433
434 /* Set the initial link mode */
435 efx_mcdi_phy_decode_link(
436 efx, &efx->link_state,
437 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
438 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
439 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
440
441 /* Default to Autonegotiated flow control if the PHY supports it */
442 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
443 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
444 efx->wanted_fc |= EFX_FC_AUTO;
445 efx_link_set_wanted_fc(efx, efx->wanted_fc);
446
447 return 0;
448
449 fail:
450 kfree(phy_data);
451 return rc;
452 }
453
454 int efx_mcdi_port_reconfigure(struct efx_nic *efx)
455 {
456 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
457 u32 caps = (efx->link_advertising[0] ?
458 ethtool_linkset_to_mcdi_cap(efx->link_advertising) :
459 phy_cfg->forced_cap);
460
461 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
462 efx->loopback_mode, 0);
463 }
464
465 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are
466 * supported by the link partner. Warn the user if this isn't the case
467 */
468 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
469 {
470 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
471 u32 rmtadv;
472
473 /* The link partner capabilities are only relevant if the
474 * link supports flow control autonegotiation */
475 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
476 return;
477
478 /* If flow control autoneg is supported and enabled, then fine */
479 if (efx->wanted_fc & EFX_FC_AUTO)
480 return;
481
482 rmtadv = 0;
483 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
484 rmtadv |= ADVERTISED_Pause;
485 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
486 rmtadv |= ADVERTISED_Asym_Pause;
487
488 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
489 netif_err(efx, link, efx->net_dev,
490 "warning: link partner doesn't support pause frames");
491 }
492
493 static bool efx_mcdi_phy_poll(struct efx_nic *efx)
494 {
495 struct efx_link_state old_state = efx->link_state;
496 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
497 int rc;
498
499 WARN_ON(!mutex_is_locked(&efx->mac_lock));
500
501 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
502
503 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
504 outbuf, sizeof(outbuf), NULL);
505 if (rc)
506 efx->link_state.up = false;
507 else
508 efx_mcdi_phy_decode_link(
509 efx, &efx->link_state,
510 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
511 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
512 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
513
514 return !efx_link_state_equal(&efx->link_state, &old_state);
515 }
516
517 static void efx_mcdi_phy_remove(struct efx_nic *efx)
518 {
519 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
520
521 efx->phy_data = NULL;
522 kfree(phy_data);
523 }
524
525 static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx,
526 struct ethtool_link_ksettings *cmd)
527 {
528 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
529 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
530 int rc;
531
532 cmd->base.speed = efx->link_state.speed;
533 cmd->base.duplex = efx->link_state.fd;
534 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);
535 cmd->base.phy_address = phy_cfg->port;
536 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg);
537 cmd->base.mdio_support = (efx->mdio.mode_support &
538 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
539
540 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap,
541 cmd->link_modes.supported);
542 memcpy(cmd->link_modes.advertising, efx->link_advertising,
543 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));
544
545 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
546 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
547 outbuf, sizeof(outbuf), NULL);
548 if (rc)
549 return;
550 mcdi_to_ethtool_linkset(phy_cfg->media,
551 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP),
552 cmd->link_modes.lp_advertising);
553 }
554
555 static int
556 efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
557 const struct ethtool_link_ksettings *cmd)
558 {
559 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
560 u32 caps;
561 int rc;
562
563 if (cmd->base.autoneg) {
564 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) |
565 1 << MC_CMD_PHY_CAP_AN_LBN);
566 } else if (cmd->base.duplex) {
567 switch (cmd->base.speed) {
568 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
569 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
570 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
571 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
572 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
573 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break;
574 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break;
575 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break;
576 default: return -EINVAL;
577 }
578 } else {
579 switch (cmd->base.speed) {
580 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
581 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
582 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
583 default: return -EINVAL;
584 }
585 }
586
587 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
588 efx->loopback_mode, 0);
589 if (rc)
590 return rc;
591
592 if (cmd->base.autoneg) {
593 efx_link_set_advertising(efx, cmd->link_modes.advertising);
594 phy_cfg->forced_cap = 0;
595 } else {
596 efx_link_clear_advertising(efx);
597 phy_cfg->forced_cap = caps;
598 }
599 return 0;
600 }
601
602 static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
603 {
604 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
605 size_t outlen;
606 int rc;
607
608 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
609
610 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
611 outbuf, sizeof(outbuf), &outlen);
612 if (rc)
613 return rc;
614
615 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
616 return -EIO;
617 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)
618 return -EINVAL;
619
620 return 0;
621 }
622
623 static const char *const mcdi_sft9001_cable_diag_names[] = {
624 "cable.pairA.length",
625 "cable.pairB.length",
626 "cable.pairC.length",
627 "cable.pairD.length",
628 "cable.pairA.status",
629 "cable.pairB.status",
630 "cable.pairC.status",
631 "cable.pairD.status",
632 };
633
634 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
635 int *results)
636 {
637 unsigned int retry, i, count = 0;
638 size_t outlen;
639 u32 status;
640 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
641 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
642 u8 *ptr;
643 int rc;
644
645 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
646 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
647 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
648 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
649 if (rc)
650 goto out;
651
652 /* Wait up to 10s for BIST to finish */
653 for (retry = 0; retry < 100; ++retry) {
654 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
655 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
656 outbuf, sizeof(outbuf), &outlen);
657 if (rc)
658 goto out;
659
660 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
661 if (status != MC_CMD_POLL_BIST_RUNNING)
662 goto finished;
663
664 msleep(100);
665 }
666
667 rc = -ETIMEDOUT;
668 goto out;
669
670 finished:
671 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
672
673 /* SFT9001 specific cable diagnostics output */
674 if (efx->phy_type == PHY_TYPE_SFT9001B &&
675 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
676 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
677 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
678 if (status == MC_CMD_POLL_BIST_PASSED &&
679 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
680 for (i = 0; i < 8; i++) {
681 results[count + i] =
682 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
683 EFX_DWORD_0);
684 }
685 }
686 count += 8;
687 }
688 rc = count;
689
690 out:
691 return rc;
692 }
693
694 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
695 unsigned flags)
696 {
697 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
698 u32 mode;
699 int rc;
700
701 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
702 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
703 if (rc < 0)
704 return rc;
705
706 results += rc;
707 }
708
709 /* If we support both LONG and SHORT, then run each in response to
710 * break or not. Otherwise, run the one we support */
711 mode = 0;
712 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
713 if ((flags & ETH_TEST_FL_OFFLINE) &&
714 (phy_cfg->flags &
715 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
716 mode = MC_CMD_PHY_BIST_CABLE_LONG;
717 else
718 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
719 } else if (phy_cfg->flags &
720 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
721 mode = MC_CMD_PHY_BIST_CABLE_LONG;
722
723 if (mode != 0) {
724 rc = efx_mcdi_bist(efx, mode, results);
725 if (rc < 0)
726 return rc;
727 results += rc;
728 }
729
730 return 0;
731 }
732
733 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
734 unsigned int index)
735 {
736 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
737
738 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
739 if (index == 0)
740 return "bist";
741 --index;
742 }
743
744 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
745 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
746 if (index == 0)
747 return "cable";
748 --index;
749
750 if (efx->phy_type == PHY_TYPE_SFT9001B) {
751 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
752 return mcdi_sft9001_cable_diag_names[index];
753 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
754 }
755 }
756
757 return NULL;
758 }
759
760 #define SFP_PAGE_SIZE 128
761 #define SFF_DIAG_TYPE_OFFSET 92
762 #define SFF_DIAG_ADDR_CHANGE BIT(2)
763 #define SFF_8079_NUM_PAGES 2
764 #define SFF_8472_NUM_PAGES 4
765 #define SFF_8436_NUM_PAGES 5
766 #define SFF_DMT_LEVEL_OFFSET 94
767
768 /** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom
769 * @efx: NIC context
770 * @page: EEPROM page number
771 * @data: Destination data pointer
772 * @offset: Offset in page to copy from in to data
773 * @space: Space available in data
774 *
775 * Return:
776 * >=0 - amount of data copied
777 * <0 - error
778 */
779 static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx,
780 unsigned int page,
781 u8 *data, ssize_t offset,
782 ssize_t space)
783 {
784 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
785 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
786 size_t outlen;
787 unsigned int payload_len;
788 unsigned int to_copy;
789 int rc;
790
791 if (offset > SFP_PAGE_SIZE)
792 return -EINVAL;
793
794 to_copy = min(space, SFP_PAGE_SIZE - offset);
795
796 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
797 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO,
798 inbuf, sizeof(inbuf),
799 outbuf, sizeof(outbuf),
800 &outlen);
801
802 if (rc)
803 return rc;
804
805 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
806 SFP_PAGE_SIZE))
807 return -EIO;
808
809 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN);
810 if (payload_len != SFP_PAGE_SIZE)
811 return -EIO;
812
813 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset,
814 to_copy);
815
816 return to_copy;
817 }
818
819 static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx,
820 unsigned int page,
821 u8 byte)
822 {
823 int rc;
824 u8 data;
825
826 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1);
827 if (rc == 1)
828 return data;
829
830 return rc;
831 }
832
833 static int efx_mcdi_phy_diag_type(struct efx_nic *efx)
834 {
835 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */
836 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
837 SFF_DIAG_TYPE_OFFSET);
838 }
839
840 static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx)
841 {
842 /* Page zero of the EEPROM includes the DMT level at byte 94. */
843 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
844 SFF_DMT_LEVEL_OFFSET);
845 }
846
847 static u32 efx_mcdi_phy_module_type(struct efx_nic *efx)
848 {
849 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
850
851 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS)
852 return phy_data->media;
853
854 /* A QSFP+ NIC may actually have an SFP+ module attached.
855 * The ID is page 0, byte 0.
856 */
857 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) {
858 case 0x3:
859 return MC_CMD_MEDIA_SFP_PLUS;
860 case 0xc:
861 case 0xd:
862 return MC_CMD_MEDIA_QSFP_PLUS;
863 default:
864 return 0;
865 }
866 }
867
868 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
869 struct ethtool_eeprom *ee, u8 *data)
870 {
871 int rc;
872 ssize_t space_remaining = ee->len;
873 unsigned int page_off;
874 bool ignore_missing;
875 int num_pages;
876 int page;
877
878 switch (efx_mcdi_phy_module_type(efx)) {
879 case MC_CMD_MEDIA_SFP_PLUS:
880 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ?
881 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES;
882 page = 0;
883 ignore_missing = false;
884 break;
885 case MC_CMD_MEDIA_QSFP_PLUS:
886 num_pages = SFF_8436_NUM_PAGES;
887 page = -1; /* We obtain the lower page by asking for -1. */
888 ignore_missing = true; /* Ignore missing pages after page 0. */
889 break;
890 default:
891 return -EOPNOTSUPP;
892 }
893
894 page_off = ee->offset % SFP_PAGE_SIZE;
895 page += ee->offset / SFP_PAGE_SIZE;
896
897 while (space_remaining && (page < num_pages)) {
898 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page,
899 data, page_off,
900 space_remaining);
901
902 if (rc > 0) {
903 space_remaining -= rc;
904 data += rc;
905 page_off = 0;
906 page++;
907 } else if (rc == 0) {
908 space_remaining = 0;
909 } else if (ignore_missing && (page > 0)) {
910 int intended_size = SFP_PAGE_SIZE - page_off;
911
912 space_remaining -= intended_size;
913 if (space_remaining < 0) {
914 space_remaining = 0;
915 } else {
916 memset(data, 0, intended_size);
917 data += intended_size;
918 page_off = 0;
919 page++;
920 rc = 0;
921 }
922 } else {
923 return rc;
924 }
925 }
926
927 return 0;
928 }
929
930 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
931 struct ethtool_modinfo *modinfo)
932 {
933 int sff_8472_level;
934 int diag_type;
935
936 switch (efx_mcdi_phy_module_type(efx)) {
937 case MC_CMD_MEDIA_SFP_PLUS:
938 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx);
939
940 /* If we can't read the diagnostics level we have none. */
941 if (sff_8472_level < 0)
942 return -EOPNOTSUPP;
943
944 /* Check if this module requires the (unsupported) address
945 * change operation.
946 */
947 diag_type = efx_mcdi_phy_diag_type(efx);
948
949 if ((sff_8472_level == 0) ||
950 (diag_type & SFF_DIAG_ADDR_CHANGE)) {
951 modinfo->type = ETH_MODULE_SFF_8079;
952 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
953 } else {
954 modinfo->type = ETH_MODULE_SFF_8472;
955 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
956 }
957 break;
958
959 case MC_CMD_MEDIA_QSFP_PLUS:
960 modinfo->type = ETH_MODULE_SFF_8436;
961 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
962 break;
963
964 default:
965 return -EOPNOTSUPP;
966 }
967
968 return 0;
969 }
970
971 static const struct efx_phy_operations efx_mcdi_phy_ops = {
972 .probe = efx_mcdi_phy_probe,
973 .init = efx_port_dummy_op_int,
974 .reconfigure = efx_mcdi_port_reconfigure,
975 .poll = efx_mcdi_phy_poll,
976 .fini = efx_port_dummy_op_void,
977 .remove = efx_mcdi_phy_remove,
978 .get_link_ksettings = efx_mcdi_phy_get_link_ksettings,
979 .set_link_ksettings = efx_mcdi_phy_set_link_ksettings,
980 .test_alive = efx_mcdi_phy_test_alive,
981 .run_tests = efx_mcdi_phy_run_tests,
982 .test_name = efx_mcdi_phy_test_name,
983 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
984 .get_module_info = efx_mcdi_phy_get_module_info,
985 };
986
987 u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
988 {
989 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
990
991 return phy_data->supported_cap;
992 }
993
994 static unsigned int efx_mcdi_event_link_speed[] = {
995 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
996 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
997 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
998 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000,
999 [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000,
1000 [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000,
1001 [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000,
1002 };
1003
1004 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
1005 {
1006 u32 flags, fcntl, speed, lpa;
1007
1008 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
1009 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
1010 speed = efx_mcdi_event_link_speed[speed];
1011
1012 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
1013 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
1014 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
1015
1016 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
1017 * which is only run after flushing the event queues. Therefore, it
1018 * is safe to modify the link state outside of the mac_lock here.
1019 */
1020 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
1021
1022 efx_mcdi_phy_check_fcntl(efx, lpa);
1023
1024 efx_link_status_changed(efx);
1025 }
1026
1027 int efx_mcdi_set_mac(struct efx_nic *efx)
1028 {
1029 u32 fcntl;
1030 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
1031
1032 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);
1033
1034 /* This has no effect on EF10 */
1035 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),
1036 efx->net_dev->dev_addr);
1037
1038 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
1039 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
1040 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
1041
1042 /* Set simple MAC filter for Siena */
1043 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT,
1044 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter);
1045
1046 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS,
1047 SET_MAC_IN_FLAG_INCLUDE_FCS,
1048 !!(efx->net_dev->features & NETIF_F_RXFCS));
1049
1050 switch (efx->wanted_fc) {
1051 case EFX_FC_RX | EFX_FC_TX:
1052 fcntl = MC_CMD_FCNTL_BIDIR;
1053 break;
1054 case EFX_FC_RX:
1055 fcntl = MC_CMD_FCNTL_RESPOND;
1056 break;
1057 default:
1058 fcntl = MC_CMD_FCNTL_OFF;
1059 break;
1060 }
1061 if (efx->wanted_fc & EFX_FC_AUTO)
1062 fcntl = MC_CMD_FCNTL_AUTO;
1063 if (efx->fc_disable)
1064 fcntl = MC_CMD_FCNTL_OFF;
1065
1066 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
1067
1068 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
1069 NULL, 0, NULL);
1070 }
1071
1072 bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
1073 {
1074 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
1075 size_t outlength;
1076 int rc;
1077
1078 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
1079
1080 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
1081 outbuf, sizeof(outbuf), &outlength);
1082 if (rc)
1083 return true;
1084
1085 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
1086 }
1087
1088 enum efx_stats_action {
1089 EFX_STATS_ENABLE,
1090 EFX_STATS_DISABLE,
1091 EFX_STATS_PULL,
1092 };
1093
1094 static int efx_mcdi_mac_stats(struct efx_nic *efx,
1095 enum efx_stats_action action, int clear)
1096 {
1097 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
1098 int rc;
1099 int change = action == EFX_STATS_PULL ? 0 : 1;
1100 int enable = action == EFX_STATS_ENABLE ? 1 : 0;
1101 int period = action == EFX_STATS_ENABLE ? 1000 : 0;
1102 dma_addr_t dma_addr = efx->stats_buffer.dma_addr;
1103 u32 dma_len = action != EFX_STATS_DISABLE ?
1104 efx->num_mac_stats * sizeof(u64) : 0;
1105
1106 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
1107
1108 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);
1109 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD,
1110 MAC_STATS_IN_DMA, !!enable,
1111 MAC_STATS_IN_CLEAR, clear,
1112 MAC_STATS_IN_PERIODIC_CHANGE, change,
1113 MAC_STATS_IN_PERIODIC_ENABLE, enable,
1114 MAC_STATS_IN_PERIODIC_CLEAR, 0,
1115 MAC_STATS_IN_PERIODIC_NOEVENT, 1,
1116 MAC_STATS_IN_PERIOD_MS, period);
1117 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
1118
1119 if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) {
1120 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1121
1122 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id);
1123 }
1124
1125 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
1126 NULL, 0, NULL);
1127 /* Expect ENOENT if DMA queues have not been set up */
1128 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues)))
1129 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf),
1130 NULL, 0, rc);
1131 return rc;
1132 }
1133
1134 void efx_mcdi_mac_start_stats(struct efx_nic *efx)
1135 {
1136 __le64 *dma_stats = efx->stats_buffer.addr;
1137
1138 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID;
1139
1140 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0);
1141 }
1142
1143 void efx_mcdi_mac_stop_stats(struct efx_nic *efx)
1144 {
1145 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0);
1146 }
1147
1148 #define EFX_MAC_STATS_WAIT_US 100
1149 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10
1150
1151 void efx_mcdi_mac_pull_stats(struct efx_nic *efx)
1152 {
1153 __le64 *dma_stats = efx->stats_buffer.addr;
1154 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS;
1155
1156 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID;
1157 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0);
1158
1159 while (dma_stats[efx->num_mac_stats - 1] ==
1160 EFX_MC_STATS_GENERATION_INVALID &&
1161 attempts-- != 0)
1162 udelay(EFX_MAC_STATS_WAIT_US);
1163 }
1164
1165 int efx_mcdi_port_probe(struct efx_nic *efx)
1166 {
1167 int rc;
1168
1169 /* Hook in PHY operations table */
1170 efx->phy_op = &efx_mcdi_phy_ops;
1171
1172 /* Set up MDIO structure for PHY */
1173 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
1174 efx->mdio.mdio_read = efx_mcdi_mdio_read;
1175 efx->mdio.mdio_write = efx_mcdi_mdio_write;
1176
1177 /* Fill out MDIO structure, loopback modes, and initial link state */
1178 rc = efx->phy_op->probe(efx);
1179 if (rc != 0)
1180 return rc;
1181
1182 /* Allocate buffer for stats */
1183 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
1184 efx->num_mac_stats * sizeof(u64), GFP_KERNEL);
1185 if (rc)
1186 return rc;
1187 netif_dbg(efx, probe, efx->net_dev,
1188 "stats buffer at %llx (virt %p phys %llx)\n",
1189 (u64)efx->stats_buffer.dma_addr,
1190 efx->stats_buffer.addr,
1191 (u64)virt_to_phys(efx->stats_buffer.addr));
1192
1193 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1);
1194
1195 return 0;
1196 }
1197
1198 void efx_mcdi_port_remove(struct efx_nic *efx)
1199 {
1200 efx->phy_op->remove(efx);
1201 efx_nic_free_buffer(efx, &efx->stats_buffer);
1202 }
1203
1204 /* Get physical port number (EF10 only; on Siena it is same as PF number) */
1205 int efx_mcdi_port_get_number(struct efx_nic *efx)
1206 {
1207 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN);
1208 int rc;
1209
1210 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0,
1211 outbuf, sizeof(outbuf), NULL);
1212 if (rc)
1213 return rc;
1214
1215 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT);
1216 }
Linux with added FPC-III support