1 /****************************************************************************
2 * Driver for Solarflare network controllers and boards
3 * Copyright 2009-2013 Solarflare Communications Inc.
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.
11 * Driver for PHY related operations via MCDI.
14 #include <linux/slab.h>
18 #include "mcdi_pcol.h"
22 struct efx_mcdi_phy_data {
37 efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
39 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN);
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));
46 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,
47 outbuf, sizeof(outbuf), &outlen);
51 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
56 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);
57 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);
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),
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));
73 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
77 static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
78 u32 flags, u32 loopback_mode,
81 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN);
84 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
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);
91 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),
99 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
103 static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
105 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN);
109 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,
110 outbuf, sizeof(outbuf), &outlen);
114 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST +
115 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) {
120 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);
125 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
129 static int efx_mcdi_mdio_read(struct net_device *net_dev,
130 int prtad, int devad, u16 addr)
132 struct efx_nic *efx = netdev_priv(net_dev);
133 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
134 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
138 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus);
139 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
140 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
141 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
143 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
144 outbuf, sizeof(outbuf), &outlen);
148 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) !=
149 MC_CMD_MDIO_STATUS_GOOD)
152 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
155 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
159 static int efx_mcdi_mdio_write(struct net_device *net_dev,
160 int prtad, int devad, u16 addr, u16 value)
162 struct efx_nic *efx = netdev_priv(net_dev);
163 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
164 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
168 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
169 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
170 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
171 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
172 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
174 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
175 outbuf, sizeof(outbuf), &outlen);
179 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
180 MC_CMD_MDIO_STATUS_GOOD)
186 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
190 static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
195 case MC_CMD_MEDIA_KX4:
196 result |= SUPPORTED_Backplane;
197 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
198 result |= SUPPORTED_1000baseKX_Full;
199 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
200 result |= SUPPORTED_10000baseKX4_Full;
203 case MC_CMD_MEDIA_XFP:
204 case MC_CMD_MEDIA_SFP_PLUS:
205 result |= SUPPORTED_FIBRE;
208 case MC_CMD_MEDIA_BASE_T:
209 result |= SUPPORTED_TP;
210 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
211 result |= SUPPORTED_10baseT_Half;
212 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
213 result |= SUPPORTED_10baseT_Full;
214 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
215 result |= SUPPORTED_100baseT_Half;
216 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
217 result |= SUPPORTED_100baseT_Full;
218 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
219 result |= SUPPORTED_1000baseT_Half;
220 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
221 result |= SUPPORTED_1000baseT_Full;
222 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
223 result |= SUPPORTED_10000baseT_Full;
227 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
228 result |= SUPPORTED_Pause;
229 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
230 result |= SUPPORTED_Asym_Pause;
231 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
232 result |= SUPPORTED_Autoneg;
237 static u32 ethtool_to_mcdi_cap(u32 cap)
241 if (cap & SUPPORTED_10baseT_Half)
242 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
243 if (cap & SUPPORTED_10baseT_Full)
244 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
245 if (cap & SUPPORTED_100baseT_Half)
246 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
247 if (cap & SUPPORTED_100baseT_Full)
248 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
249 if (cap & SUPPORTED_1000baseT_Half)
250 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
251 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
252 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
253 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
254 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
255 if (cap & SUPPORTED_Pause)
256 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
257 if (cap & SUPPORTED_Asym_Pause)
258 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
259 if (cap & SUPPORTED_Autoneg)
260 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
265 static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
267 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
268 enum efx_phy_mode mode, supported;
271 /* TODO: Advertise the capabilities supported by this PHY */
273 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))
274 supported |= PHY_MODE_TX_DISABLED;
275 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
276 supported |= PHY_MODE_LOW_POWER;
277 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))
278 supported |= PHY_MODE_OFF;
280 mode = efx->phy_mode & supported;
283 if (mode & PHY_MODE_TX_DISABLED)
284 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);
285 if (mode & PHY_MODE_LOW_POWER)
286 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
287 if (mode & PHY_MODE_OFF)
288 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
293 static u32 mcdi_to_ethtool_media(u32 media)
296 case MC_CMD_MEDIA_XAUI:
297 case MC_CMD_MEDIA_CX4:
298 case MC_CMD_MEDIA_KX4:
301 case MC_CMD_MEDIA_XFP:
302 case MC_CMD_MEDIA_SFP_PLUS:
305 case MC_CMD_MEDIA_BASE_T:
313 static void efx_mcdi_phy_decode_link(struct efx_nic *efx,
314 struct efx_link_state *link_state,
315 u32 speed, u32 flags, u32 fcntl)
318 case MC_CMD_FCNTL_AUTO:
319 WARN_ON(1); /* This is not a link mode */
320 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
322 case MC_CMD_FCNTL_BIDIR:
323 link_state->fc = EFX_FC_TX | EFX_FC_RX;
325 case MC_CMD_FCNTL_RESPOND:
326 link_state->fc = EFX_FC_RX;
330 case MC_CMD_FCNTL_OFF:
335 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
336 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
337 link_state->speed = speed;
340 static int efx_mcdi_phy_probe(struct efx_nic *efx)
342 struct efx_mcdi_phy_data *phy_data;
343 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
347 /* Initialise and populate phy_data */
348 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
349 if (phy_data == NULL)
352 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
356 /* Read initial link advertisement */
357 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
358 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
359 outbuf, sizeof(outbuf), NULL);
363 /* Fill out nic state */
364 efx->phy_data = phy_data;
365 efx->phy_type = phy_data->type;
367 efx->mdio_bus = phy_data->channel;
368 efx->mdio.prtad = phy_data->port;
369 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
370 efx->mdio.mode_support = 0;
371 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
372 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
373 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
374 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
376 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
377 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
378 efx->link_advertising =
379 mcdi_to_ethtool_cap(phy_data->media, caps);
381 phy_data->forced_cap = caps;
383 /* Assert that we can map efx -> mcdi loopback modes */
384 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
385 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
386 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
387 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
388 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
389 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
390 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
391 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
392 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
393 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
394 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
395 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
396 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
397 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
398 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
399 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
400 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
401 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
402 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
403 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
404 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
405 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
406 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
407 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
408 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
409 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
410 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
412 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
415 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
416 * but by convention we don't */
417 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
419 /* Set the initial link mode */
420 efx_mcdi_phy_decode_link(
421 efx, &efx->link_state,
422 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
423 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
424 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
426 /* Default to Autonegotiated flow control if the PHY supports it */
427 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
428 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
429 efx->wanted_fc |= EFX_FC_AUTO;
430 efx_link_set_wanted_fc(efx, efx->wanted_fc);
439 int efx_mcdi_port_reconfigure(struct efx_nic *efx)
441 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
442 u32 caps = (efx->link_advertising ?
443 ethtool_to_mcdi_cap(efx->link_advertising) :
444 phy_cfg->forced_cap);
446 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
447 efx->loopback_mode, 0);
450 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are
451 * supported by the link partner. Warn the user if this isn't the case
453 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
455 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
458 /* The link partner capabilities are only relevant if the
459 * link supports flow control autonegotiation */
460 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
463 /* If flow control autoneg is supported and enabled, then fine */
464 if (efx->wanted_fc & EFX_FC_AUTO)
468 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
469 rmtadv |= ADVERTISED_Pause;
470 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
471 rmtadv |= ADVERTISED_Asym_Pause;
473 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
474 netif_err(efx, link, efx->net_dev,
475 "warning: link partner doesn't support pause frames");
478 static bool efx_mcdi_phy_poll(struct efx_nic *efx)
480 struct efx_link_state old_state = efx->link_state;
481 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
484 WARN_ON(!mutex_is_locked(&efx->mac_lock));
486 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
488 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
489 outbuf, sizeof(outbuf), NULL);
491 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
493 efx->link_state.up = false;
495 efx_mcdi_phy_decode_link(
496 efx, &efx->link_state,
497 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
498 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
499 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
502 return !efx_link_state_equal(&efx->link_state, &old_state);
505 static void efx_mcdi_phy_remove(struct efx_nic *efx)
507 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
509 efx->phy_data = NULL;
513 static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
515 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
516 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
520 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
521 ecmd->advertising = efx->link_advertising;
522 ethtool_cmd_speed_set(ecmd, efx->link_state.speed);
523 ecmd->duplex = efx->link_state.fd;
524 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
525 ecmd->phy_address = phy_cfg->port;
526 ecmd->transceiver = XCVR_INTERNAL;
527 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
528 ecmd->mdio_support = (efx->mdio.mode_support &
529 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
531 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
532 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
533 outbuf, sizeof(outbuf), NULL);
535 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
539 ecmd->lp_advertising =
540 mcdi_to_ethtool_cap(phy_cfg->media,
541 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
544 static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
546 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
551 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
552 1 << MC_CMD_PHY_CAP_AN_LBN);
553 } else if (ecmd->duplex) {
554 switch (ethtool_cmd_speed(ecmd)) {
555 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
556 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
557 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
558 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
559 default: return -EINVAL;
562 switch (ethtool_cmd_speed(ecmd)) {
563 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
564 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
565 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
566 default: return -EINVAL;
570 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
571 efx->loopback_mode, 0);
576 efx_link_set_advertising(
577 efx, ecmd->advertising | ADVERTISED_Autoneg);
578 phy_cfg->forced_cap = 0;
580 efx_link_set_advertising(efx, 0);
581 phy_cfg->forced_cap = caps;
586 static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
588 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
592 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
594 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
595 outbuf, sizeof(outbuf), &outlen);
599 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
601 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)
607 static const char *const mcdi_sft9001_cable_diag_names[] = {
608 "cable.pairA.length",
609 "cable.pairB.length",
610 "cable.pairC.length",
611 "cable.pairD.length",
612 "cable.pairA.status",
613 "cable.pairB.status",
614 "cable.pairC.status",
615 "cable.pairD.status",
618 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
621 unsigned int retry, i, count = 0;
624 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
625 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
629 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
630 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
631 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
632 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
636 /* Wait up to 10s for BIST to finish */
637 for (retry = 0; retry < 100; ++retry) {
638 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
639 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
640 outbuf, sizeof(outbuf), &outlen);
644 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
645 if (status != MC_CMD_POLL_BIST_RUNNING)
655 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
657 /* SFT9001 specific cable diagnostics output */
658 if (efx->phy_type == PHY_TYPE_SFT9001B &&
659 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
660 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
661 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
662 if (status == MC_CMD_POLL_BIST_PASSED &&
663 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
664 for (i = 0; i < 8; i++) {
666 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
678 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
681 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
685 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
686 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
693 /* If we support both LONG and SHORT, then run each in response to
694 * break or not. Otherwise, run the one we support */
696 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
697 if ((flags & ETH_TEST_FL_OFFLINE) &&
699 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
700 mode = MC_CMD_PHY_BIST_CABLE_LONG;
702 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
703 } else if (phy_cfg->flags &
704 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
705 mode = MC_CMD_PHY_BIST_CABLE_LONG;
708 rc = efx_mcdi_bist(efx, mode, results);
717 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
720 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
722 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
728 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
729 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
734 if (efx->phy_type == PHY_TYPE_SFT9001B) {
735 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
736 return mcdi_sft9001_cable_diag_names[index];
737 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
744 #define SFP_PAGE_SIZE 128
745 #define SFP_NUM_PAGES 2
746 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
747 struct ethtool_eeprom *ee, u8 *data)
749 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
750 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
753 unsigned int payload_len;
754 unsigned int space_remaining = ee->len;
756 unsigned int page_off;
757 unsigned int to_copy;
758 u8 *user_data = data;
760 BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN);
762 page_off = ee->offset % SFP_PAGE_SIZE;
763 page = ee->offset / SFP_PAGE_SIZE;
765 while (space_remaining && (page < SFP_NUM_PAGES)) {
766 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
768 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO,
769 inbuf, sizeof(inbuf),
770 outbuf, sizeof(outbuf),
775 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
779 payload_len = MCDI_DWORD(outbuf,
780 GET_PHY_MEDIA_INFO_OUT_DATALEN);
781 if (payload_len != SFP_PAGE_SIZE)
784 /* Copy as much as we can into data */
785 payload_len -= page_off;
786 to_copy = (space_remaining < payload_len) ?
787 space_remaining : payload_len;
790 MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off,
793 space_remaining -= to_copy;
794 user_data += to_copy;
802 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
803 struct ethtool_modinfo *modinfo)
805 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
807 switch (phy_cfg->media) {
808 case MC_CMD_MEDIA_SFP_PLUS:
809 modinfo->type = ETH_MODULE_SFF_8079;
810 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
817 static const struct efx_phy_operations efx_mcdi_phy_ops = {
818 .probe = efx_mcdi_phy_probe,
819 .init = efx_port_dummy_op_int,
820 .reconfigure = efx_mcdi_port_reconfigure,
821 .poll = efx_mcdi_phy_poll,
822 .fini = efx_port_dummy_op_void,
823 .remove = efx_mcdi_phy_remove,
824 .get_settings = efx_mcdi_phy_get_settings,
825 .set_settings = efx_mcdi_phy_set_settings,
826 .test_alive = efx_mcdi_phy_test_alive,
827 .run_tests = efx_mcdi_phy_run_tests,
828 .test_name = efx_mcdi_phy_test_name,
829 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
830 .get_module_info = efx_mcdi_phy_get_module_info,
833 u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
835 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
837 return phy_data->supported_cap;
840 static unsigned int efx_mcdi_event_link_speed[] = {
841 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
842 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
843 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
846 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
848 u32 flags, fcntl, speed, lpa;
850 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
851 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
852 speed = efx_mcdi_event_link_speed[speed];
854 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
855 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
856 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
858 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
859 * which is only run after flushing the event queues. Therefore, it
860 * is safe to modify the link state outside of the mac_lock here.
862 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
864 efx_mcdi_phy_check_fcntl(efx, lpa);
866 efx_link_status_changed(efx);
869 int efx_mcdi_set_mac(struct efx_nic *efx)
872 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
874 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);
876 memcpy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),
877 efx->net_dev->dev_addr, ETH_ALEN);
879 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
880 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
881 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
883 /* Set simple MAC filter for Siena */
884 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT,
885 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter);
887 switch (efx->wanted_fc) {
888 case EFX_FC_RX | EFX_FC_TX:
889 fcntl = MC_CMD_FCNTL_BIDIR;
892 fcntl = MC_CMD_FCNTL_RESPOND;
895 fcntl = MC_CMD_FCNTL_OFF;
898 if (efx->wanted_fc & EFX_FC_AUTO)
899 fcntl = MC_CMD_FCNTL_AUTO;
901 fcntl = MC_CMD_FCNTL_OFF;
903 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
905 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
909 bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
911 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
915 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
917 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
918 outbuf, sizeof(outbuf), &outlength);
920 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
925 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
928 static int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
929 u32 dma_len, int enable, int clear)
931 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
933 int period = enable ? 1000 : 0;
935 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
937 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);
938 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD,
939 MAC_STATS_IN_DMA, !!enable,
940 MAC_STATS_IN_CLEAR, clear,
941 MAC_STATS_IN_PERIODIC_CHANGE, 1,
942 MAC_STATS_IN_PERIODIC_ENABLE, !!enable,
943 MAC_STATS_IN_PERIODIC_CLEAR, 0,
944 MAC_STATS_IN_PERIODIC_NOEVENT, 1,
945 MAC_STATS_IN_PERIOD_MS, period);
946 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
948 rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
956 netif_err(efx, hw, efx->net_dev, "%s: %s failed rc=%d\n",
957 __func__, enable ? "enable" : "disable", rc);
961 void efx_mcdi_mac_start_stats(struct efx_nic *efx)
963 __le64 *dma_stats = efx->stats_buffer.addr;
965 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
967 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr,
968 MC_CMD_MAC_NSTATS * sizeof(u64), 1, 0);
971 void efx_mcdi_mac_stop_stats(struct efx_nic *efx)
973 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 0);
976 int efx_mcdi_port_probe(struct efx_nic *efx)
980 /* Hook in PHY operations table */
981 efx->phy_op = &efx_mcdi_phy_ops;
983 /* Set up MDIO structure for PHY */
984 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
985 efx->mdio.mdio_read = efx_mcdi_mdio_read;
986 efx->mdio.mdio_write = efx_mcdi_mdio_write;
988 /* Fill out MDIO structure, loopback modes, and initial link state */
989 rc = efx->phy_op->probe(efx);
993 /* Allocate buffer for stats */
994 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
995 MC_CMD_MAC_NSTATS * sizeof(u64), GFP_KERNEL);
998 netif_dbg(efx, probe, efx->net_dev,
999 "stats buffer at %llx (virt %p phys %llx)\n",
1000 (u64)efx->stats_buffer.dma_addr,
1001 efx->stats_buffer.addr,
1002 (u64)virt_to_phys(efx->stats_buffer.addr));
1004 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 1);
1009 void efx_mcdi_port_remove(struct efx_nic *efx)
1011 efx->phy_op->remove(efx);
1012 efx_nic_free_buffer(efx, &efx->stats_buffer);
1015 /* Get physical port number (EF10 only; on Siena it is same as PF number) */
1016 int efx_mcdi_port_get_number(struct efx_nic *efx)
1018 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN);
1021 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0,
1022 outbuf, sizeof(outbuf), NULL);
1026 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT);