1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2009-2010 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_LEN) {
119 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);
124 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
128 static int efx_mcdi_mdio_read(struct net_device *net_dev,
129 int prtad, int devad, u16 addr)
131 struct efx_nic *efx = netdev_priv(net_dev);
132 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
133 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
137 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus);
138 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
139 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
140 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
142 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
143 outbuf, sizeof(outbuf), &outlen);
147 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) !=
148 MC_CMD_MDIO_STATUS_GOOD)
151 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
154 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
158 static int efx_mcdi_mdio_write(struct net_device *net_dev,
159 int prtad, int devad, u16 addr, u16 value)
161 struct efx_nic *efx = netdev_priv(net_dev);
162 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
163 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
167 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
168 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
169 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
170 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
171 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
173 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
174 outbuf, sizeof(outbuf), &outlen);
178 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
179 MC_CMD_MDIO_STATUS_GOOD)
185 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
189 static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
194 case MC_CMD_MEDIA_KX4:
195 result |= SUPPORTED_Backplane;
196 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
197 result |= SUPPORTED_1000baseKX_Full;
198 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
199 result |= SUPPORTED_10000baseKX4_Full;
202 case MC_CMD_MEDIA_XFP:
203 case MC_CMD_MEDIA_SFP_PLUS:
204 result |= SUPPORTED_FIBRE;
207 case MC_CMD_MEDIA_BASE_T:
208 result |= SUPPORTED_TP;
209 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
210 result |= SUPPORTED_10baseT_Half;
211 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
212 result |= SUPPORTED_10baseT_Full;
213 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
214 result |= SUPPORTED_100baseT_Half;
215 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
216 result |= SUPPORTED_100baseT_Full;
217 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
218 result |= SUPPORTED_1000baseT_Half;
219 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
220 result |= SUPPORTED_1000baseT_Full;
221 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
222 result |= SUPPORTED_10000baseT_Full;
226 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
227 result |= SUPPORTED_Pause;
228 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
229 result |= SUPPORTED_Asym_Pause;
230 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
231 result |= SUPPORTED_Autoneg;
236 static u32 ethtool_to_mcdi_cap(u32 cap)
240 if (cap & SUPPORTED_10baseT_Half)
241 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
242 if (cap & SUPPORTED_10baseT_Full)
243 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
244 if (cap & SUPPORTED_100baseT_Half)
245 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
246 if (cap & SUPPORTED_100baseT_Full)
247 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
248 if (cap & SUPPORTED_1000baseT_Half)
249 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
250 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
251 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
252 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
253 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
254 if (cap & SUPPORTED_Pause)
255 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
256 if (cap & SUPPORTED_Asym_Pause)
257 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
258 if (cap & SUPPORTED_Autoneg)
259 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
264 static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
266 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
267 enum efx_phy_mode mode, supported;
270 /* TODO: Advertise the capabilities supported by this PHY */
272 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))
273 supported |= PHY_MODE_TX_DISABLED;
274 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
275 supported |= PHY_MODE_LOW_POWER;
276 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))
277 supported |= PHY_MODE_OFF;
279 mode = efx->phy_mode & supported;
282 if (mode & PHY_MODE_TX_DISABLED)
283 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);
284 if (mode & PHY_MODE_LOW_POWER)
285 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
286 if (mode & PHY_MODE_OFF)
287 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
292 static u32 mcdi_to_ethtool_media(u32 media)
295 case MC_CMD_MEDIA_XAUI:
296 case MC_CMD_MEDIA_CX4:
297 case MC_CMD_MEDIA_KX4:
300 case MC_CMD_MEDIA_XFP:
301 case MC_CMD_MEDIA_SFP_PLUS:
304 case MC_CMD_MEDIA_BASE_T:
312 static void efx_mcdi_phy_decode_link(struct efx_nic *efx,
313 struct efx_link_state *link_state,
314 u32 speed, u32 flags, u32 fcntl)
317 case MC_CMD_FCNTL_AUTO:
318 WARN_ON(1); /* This is not a link mode */
319 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
321 case MC_CMD_FCNTL_BIDIR:
322 link_state->fc = EFX_FC_TX | EFX_FC_RX;
324 case MC_CMD_FCNTL_RESPOND:
325 link_state->fc = EFX_FC_RX;
329 case MC_CMD_FCNTL_OFF:
334 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
335 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
336 link_state->speed = speed;
339 static int efx_mcdi_phy_probe(struct efx_nic *efx)
341 struct efx_mcdi_phy_data *phy_data;
342 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
346 /* Initialise and populate phy_data */
347 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
348 if (phy_data == NULL)
351 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
355 /* Read initial link advertisement */
356 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
357 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
358 outbuf, sizeof(outbuf), NULL);
362 /* Fill out nic state */
363 efx->phy_data = phy_data;
364 efx->phy_type = phy_data->type;
366 efx->mdio_bus = phy_data->channel;
367 efx->mdio.prtad = phy_data->port;
368 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
369 efx->mdio.mode_support = 0;
370 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
371 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
372 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
373 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
375 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
376 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
377 efx->link_advertising =
378 mcdi_to_ethtool_cap(phy_data->media, caps);
380 phy_data->forced_cap = caps;
382 /* Assert that we can map efx -> mcdi loopback modes */
383 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
384 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
385 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
386 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
387 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
388 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
389 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
390 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
391 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
392 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
393 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
394 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
395 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
396 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
397 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
398 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
399 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
400 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
401 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
402 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
403 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
404 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
405 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
406 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
407 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
408 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
409 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
411 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
414 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
415 * but by convention we don't */
416 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
418 /* Set the initial link mode */
419 efx_mcdi_phy_decode_link(
420 efx, &efx->link_state,
421 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
422 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
423 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
425 /* Default to Autonegotiated flow control if the PHY supports it */
426 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
427 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
428 efx->wanted_fc |= EFX_FC_AUTO;
429 efx_link_set_wanted_fc(efx, efx->wanted_fc);
438 int efx_mcdi_port_reconfigure(struct efx_nic *efx)
440 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
441 u32 caps = (efx->link_advertising ?
442 ethtool_to_mcdi_cap(efx->link_advertising) :
443 phy_cfg->forced_cap);
445 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
446 efx->loopback_mode, 0);
449 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are
450 * supported by the link partner. Warn the user if this isn't the case
452 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
454 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
457 /* The link partner capabilities are only relevant if the
458 * link supports flow control autonegotiation */
459 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
462 /* If flow control autoneg is supported and enabled, then fine */
463 if (efx->wanted_fc & EFX_FC_AUTO)
467 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
468 rmtadv |= ADVERTISED_Pause;
469 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
470 rmtadv |= ADVERTISED_Asym_Pause;
472 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
473 netif_err(efx, link, efx->net_dev,
474 "warning: link partner doesn't support pause frames");
477 static bool efx_mcdi_phy_poll(struct efx_nic *efx)
479 struct efx_link_state old_state = efx->link_state;
480 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
483 WARN_ON(!mutex_is_locked(&efx->mac_lock));
485 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
487 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
488 outbuf, sizeof(outbuf), NULL);
490 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
492 efx->link_state.up = false;
494 efx_mcdi_phy_decode_link(
495 efx, &efx->link_state,
496 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
497 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
498 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
501 return !efx_link_state_equal(&efx->link_state, &old_state);
504 static void efx_mcdi_phy_remove(struct efx_nic *efx)
506 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
508 efx->phy_data = NULL;
512 static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
514 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
515 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
519 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
520 ecmd->advertising = efx->link_advertising;
521 ethtool_cmd_speed_set(ecmd, efx->link_state.speed);
522 ecmd->duplex = efx->link_state.fd;
523 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
524 ecmd->phy_address = phy_cfg->port;
525 ecmd->transceiver = XCVR_INTERNAL;
526 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
527 ecmd->mdio_support = (efx->mdio.mode_support &
528 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
530 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
531 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
532 outbuf, sizeof(outbuf), NULL);
534 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
538 ecmd->lp_advertising =
539 mcdi_to_ethtool_cap(phy_cfg->media,
540 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
543 static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
545 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
550 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
551 1 << MC_CMD_PHY_CAP_AN_LBN);
552 } else if (ecmd->duplex) {
553 switch (ethtool_cmd_speed(ecmd)) {
554 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
555 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
556 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
557 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
558 default: return -EINVAL;
561 switch (ethtool_cmd_speed(ecmd)) {
562 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
563 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
564 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
565 default: return -EINVAL;
569 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
570 efx->loopback_mode, 0);
575 efx_link_set_advertising(
576 efx, ecmd->advertising | ADVERTISED_Autoneg);
577 phy_cfg->forced_cap = 0;
579 efx_link_set_advertising(efx, 0);
580 phy_cfg->forced_cap = caps;
585 static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
587 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
591 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
593 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
594 outbuf, sizeof(outbuf), &outlen);
598 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
600 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)
606 static const char *const mcdi_sft9001_cable_diag_names[] = {
607 "cable.pairA.length",
608 "cable.pairB.length",
609 "cable.pairC.length",
610 "cable.pairD.length",
611 "cable.pairA.status",
612 "cable.pairB.status",
613 "cable.pairC.status",
614 "cable.pairD.status",
617 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
620 unsigned int retry, i, count = 0;
623 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
624 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
628 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
629 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
630 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
631 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
635 /* Wait up to 10s for BIST to finish */
636 for (retry = 0; retry < 100; ++retry) {
637 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
638 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
639 outbuf, sizeof(outbuf), &outlen);
643 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
644 if (status != MC_CMD_POLL_BIST_RUNNING)
654 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
656 /* SFT9001 specific cable diagnostics output */
657 if (efx->phy_type == PHY_TYPE_SFT9001B &&
658 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
659 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
660 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
661 if (status == MC_CMD_POLL_BIST_PASSED &&
662 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
663 for (i = 0; i < 8; i++) {
665 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
677 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
680 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
684 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
685 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
692 /* If we support both LONG and SHORT, then run each in response to
693 * break or not. Otherwise, run the one we support */
695 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
696 if ((flags & ETH_TEST_FL_OFFLINE) &&
698 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
699 mode = MC_CMD_PHY_BIST_CABLE_LONG;
701 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
702 } else if (phy_cfg->flags &
703 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
704 mode = MC_CMD_PHY_BIST_CABLE_LONG;
707 rc = efx_mcdi_bist(efx, mode, results);
716 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
719 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
721 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
727 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
728 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
733 if (efx->phy_type == PHY_TYPE_SFT9001B) {
734 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
735 return mcdi_sft9001_cable_diag_names[index];
736 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
743 #define SFP_PAGE_SIZE 128
744 #define SFP_NUM_PAGES 2
745 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
746 struct ethtool_eeprom *ee, u8 *data)
748 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
749 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
752 unsigned int payload_len;
753 unsigned int space_remaining = ee->len;
755 unsigned int page_off;
756 unsigned int to_copy;
757 u8 *user_data = data;
759 BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN);
761 page_off = ee->offset % SFP_PAGE_SIZE;
762 page = ee->offset / SFP_PAGE_SIZE;
764 while (space_remaining && (page < SFP_NUM_PAGES)) {
765 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
767 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO,
768 inbuf, sizeof(inbuf),
769 outbuf, sizeof(outbuf),
774 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
778 payload_len = MCDI_DWORD(outbuf,
779 GET_PHY_MEDIA_INFO_OUT_DATALEN);
780 if (payload_len != SFP_PAGE_SIZE)
783 /* Copy as much as we can into data */
784 payload_len -= page_off;
785 to_copy = (space_remaining < payload_len) ?
786 space_remaining : payload_len;
789 MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off,
792 space_remaining -= to_copy;
793 user_data += to_copy;
801 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
802 struct ethtool_modinfo *modinfo)
804 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
806 switch (phy_cfg->media) {
807 case MC_CMD_MEDIA_SFP_PLUS:
808 modinfo->type = ETH_MODULE_SFF_8079;
809 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
816 static const struct efx_phy_operations efx_mcdi_phy_ops = {
817 .probe = efx_mcdi_phy_probe,
818 .init = efx_port_dummy_op_int,
819 .reconfigure = efx_mcdi_port_reconfigure,
820 .poll = efx_mcdi_phy_poll,
821 .fini = efx_port_dummy_op_void,
822 .remove = efx_mcdi_phy_remove,
823 .get_settings = efx_mcdi_phy_get_settings,
824 .set_settings = efx_mcdi_phy_set_settings,
825 .test_alive = efx_mcdi_phy_test_alive,
826 .run_tests = efx_mcdi_phy_run_tests,
827 .test_name = efx_mcdi_phy_test_name,
828 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
829 .get_module_info = efx_mcdi_phy_get_module_info,
832 static unsigned int efx_mcdi_event_link_speed[] = {
833 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
834 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
835 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
838 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
840 u32 flags, fcntl, speed, lpa;
842 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
843 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
844 speed = efx_mcdi_event_link_speed[speed];
846 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
847 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
848 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
850 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
851 * which is only run after flushing the event queues. Therefore, it
852 * is safe to modify the link state outside of the mac_lock here.
854 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
856 efx_mcdi_phy_check_fcntl(efx, lpa);
858 efx_link_status_changed(efx);
861 int efx_mcdi_set_mac(struct efx_nic *efx)
864 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
866 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);
868 memcpy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),
869 efx->net_dev->dev_addr, ETH_ALEN);
871 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
872 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
873 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
875 /* The MCDI command provides for controlling accept/reject
876 * of broadcast packets too, but the driver doesn't currently
878 reject = (efx->promiscuous) ? 0 :
879 (1 << MC_CMD_SET_MAC_IN_REJECT_UNCST_LBN);
880 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_REJECT, reject);
882 switch (efx->wanted_fc) {
883 case EFX_FC_RX | EFX_FC_TX:
884 fcntl = MC_CMD_FCNTL_BIDIR;
887 fcntl = MC_CMD_FCNTL_RESPOND;
890 fcntl = MC_CMD_FCNTL_OFF;
893 if (efx->wanted_fc & EFX_FC_AUTO)
894 fcntl = MC_CMD_FCNTL_AUTO;
896 fcntl = MC_CMD_FCNTL_OFF;
898 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
900 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
904 bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
906 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
910 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
912 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
913 outbuf, sizeof(outbuf), &outlength);
915 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
920 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
923 static int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
924 u32 dma_len, int enable, int clear)
926 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
928 efx_dword_t *cmd_ptr;
929 int period = enable ? 1000 : 0;
931 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
933 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);
934 cmd_ptr = (efx_dword_t *)MCDI_PTR(inbuf, MAC_STATS_IN_CMD);
935 EFX_POPULATE_DWORD_7(*cmd_ptr,
936 MC_CMD_MAC_STATS_IN_DMA, !!enable,
937 MC_CMD_MAC_STATS_IN_CLEAR, clear,
938 MC_CMD_MAC_STATS_IN_PERIODIC_CHANGE, 1,
939 MC_CMD_MAC_STATS_IN_PERIODIC_ENABLE, !!enable,
940 MC_CMD_MAC_STATS_IN_PERIODIC_CLEAR, 0,
941 MC_CMD_MAC_STATS_IN_PERIODIC_NOEVENT, 1,
942 MC_CMD_MAC_STATS_IN_PERIOD_MS, period);
943 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
945 rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
953 netif_err(efx, hw, efx->net_dev, "%s: %s failed rc=%d\n",
954 __func__, enable ? "enable" : "disable", rc);
958 void efx_mcdi_mac_start_stats(struct efx_nic *efx)
960 __le64 *dma_stats = efx->stats_buffer.addr;
962 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
964 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr,
965 MC_CMD_MAC_NSTATS * sizeof(u64), 1, 0);
968 void efx_mcdi_mac_stop_stats(struct efx_nic *efx)
970 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 0);
973 int efx_mcdi_port_probe(struct efx_nic *efx)
977 /* Hook in PHY operations table */
978 efx->phy_op = &efx_mcdi_phy_ops;
980 /* Set up MDIO structure for PHY */
981 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
982 efx->mdio.mdio_read = efx_mcdi_mdio_read;
983 efx->mdio.mdio_write = efx_mcdi_mdio_write;
985 /* Fill out MDIO structure, loopback modes, and initial link state */
986 rc = efx->phy_op->probe(efx);
990 /* Allocate buffer for stats */
991 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
992 MC_CMD_MAC_NSTATS * sizeof(u64));
995 netif_dbg(efx, probe, efx->net_dev,
996 "stats buffer at %llx (virt %p phys %llx)\n",
997 (u64)efx->stats_buffer.dma_addr,
998 efx->stats_buffer.addr,
999 (u64)virt_to_phys(efx->stats_buffer.addr));
1001 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 1);
1006 void efx_mcdi_port_remove(struct efx_nic *efx)
1008 efx->phy_op->remove(efx);
1009 efx_nic_free_buffer(efx, &efx->stats_buffer);