1300 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/****************************************************************************3 * Driver for Solarflare network controllers and boards4 * Copyright 2018 Solarflare Communications Inc.5 *6 * This program is free software; you can redistribute it and/or modify it7 * under the terms of the GNU General Public License version 2 as published8 * by the Free Software Foundation, incorporated herein by reference.9 */10 11#include "mcdi_port_common.h"12#include "efx_common.h"13#include "nic.h"14 15int efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)16{17 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN);18 size_t outlen;19 int rc;20 21 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0);22 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name));23 24 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,25 outbuf, sizeof(outbuf), &outlen);26 if (rc)27 goto fail;28 29 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {30 rc = -EIO;31 goto fail;32 }33 34 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);35 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);36 cfg->supported_cap =37 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP);38 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL);39 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT);40 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK);41 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME),42 sizeof(cfg->name));43 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE);44 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK);45 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION),46 sizeof(cfg->revision));47 48 return 0;49 50fail:51 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);52 return rc;53}54 55void efx_link_set_advertising(struct efx_nic *efx,56 const unsigned long *advertising)57{58 memcpy(efx->link_advertising, advertising,59 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));60 61 efx->link_advertising[0] |= ADVERTISED_Autoneg;62 if (advertising[0] & ADVERTISED_Pause)63 efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX);64 else65 efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);66 if (advertising[0] & ADVERTISED_Asym_Pause)67 efx->wanted_fc ^= EFX_FC_TX;68}69 70int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,71 u32 flags, u32 loopback_mode, u32 loopback_speed)72{73 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN);74 75 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);76 77 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities);78 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags);79 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode);80 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed);81 82 return efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),83 NULL, 0, NULL);84}85 86int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)87{88 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN);89 size_t outlen;90 int rc;91 92 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,93 outbuf, sizeof(outbuf), &outlen);94 if (rc)95 goto fail;96 97 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST +98 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) {99 rc = -EIO;100 goto fail;101 }102 103 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);104 105 return 0;106 107fail:108 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);109 return rc;110}111 112void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset)113{114 #define SET_BIT(name) __set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \115 linkset)116 117 bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS);118 switch (media) {119 case MC_CMD_MEDIA_KX4:120 SET_BIT(Backplane);121 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))122 SET_BIT(1000baseKX_Full);123 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))124 SET_BIT(10000baseKX4_Full);125 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))126 SET_BIT(40000baseKR4_Full);127 break;128 129 case MC_CMD_MEDIA_XFP:130 case MC_CMD_MEDIA_SFP_PLUS:131 case MC_CMD_MEDIA_QSFP_PLUS:132 SET_BIT(FIBRE);133 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) {134 SET_BIT(1000baseT_Full);135 SET_BIT(1000baseX_Full);136 }137 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) {138 SET_BIT(10000baseCR_Full);139 SET_BIT(10000baseLR_Full);140 SET_BIT(10000baseSR_Full);141 }142 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) {143 SET_BIT(40000baseCR4_Full);144 SET_BIT(40000baseSR4_Full);145 }146 if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN)) {147 SET_BIT(100000baseCR4_Full);148 SET_BIT(100000baseSR4_Full);149 }150 if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN)) {151 SET_BIT(25000baseCR_Full);152 SET_BIT(25000baseSR_Full);153 }154 if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN))155 SET_BIT(50000baseCR2_Full);156 break;157 158 case MC_CMD_MEDIA_BASE_T:159 SET_BIT(TP);160 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))161 SET_BIT(10baseT_Half);162 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))163 SET_BIT(10baseT_Full);164 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))165 SET_BIT(100baseT_Half);166 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))167 SET_BIT(100baseT_Full);168 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))169 SET_BIT(1000baseT_Half);170 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))171 SET_BIT(1000baseT_Full);172 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))173 SET_BIT(10000baseT_Full);174 break;175 }176 177 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))178 SET_BIT(Pause);179 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))180 SET_BIT(Asym_Pause);181 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))182 SET_BIT(Autoneg);183 184 #undef SET_BIT185}186 187u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset)188{189 u32 result = 0;190 191 #define TEST_BIT(name) test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \192 linkset)193 194 if (TEST_BIT(10baseT_Half))195 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);196 if (TEST_BIT(10baseT_Full))197 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);198 if (TEST_BIT(100baseT_Half))199 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);200 if (TEST_BIT(100baseT_Full))201 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);202 if (TEST_BIT(1000baseT_Half))203 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);204 if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full) ||205 TEST_BIT(1000baseX_Full))206 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);207 if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full) ||208 TEST_BIT(10000baseCR_Full) || TEST_BIT(10000baseLR_Full) ||209 TEST_BIT(10000baseSR_Full))210 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);211 if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full) ||212 TEST_BIT(40000baseSR4_Full))213 result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN);214 if (TEST_BIT(100000baseCR4_Full) || TEST_BIT(100000baseSR4_Full))215 result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN);216 if (TEST_BIT(25000baseCR_Full) || TEST_BIT(25000baseSR_Full))217 result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN);218 if (TEST_BIT(50000baseCR2_Full))219 result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN);220 if (TEST_BIT(Pause))221 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);222 if (TEST_BIT(Asym_Pause))223 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);224 if (TEST_BIT(Autoneg))225 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);226 227 #undef TEST_BIT228 229 return result;230}231 232u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)233{234 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;235 enum efx_phy_mode mode, supported;236 u32 flags;237 238 /* TODO: Advertise the capabilities supported by this PHY */239 supported = 0;240 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))241 supported |= PHY_MODE_TX_DISABLED;242 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))243 supported |= PHY_MODE_LOW_POWER;244 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))245 supported |= PHY_MODE_OFF;246 247 mode = efx->phy_mode & supported;248 249 flags = 0;250 if (mode & PHY_MODE_TX_DISABLED)251 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);252 if (mode & PHY_MODE_LOW_POWER)253 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);254 if (mode & PHY_MODE_OFF)255 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);256 257 return flags;258}259 260u8 mcdi_to_ethtool_media(u32 media)261{262 switch (media) {263 case MC_CMD_MEDIA_XAUI:264 case MC_CMD_MEDIA_CX4:265 case MC_CMD_MEDIA_KX4:266 return PORT_OTHER;267 268 case MC_CMD_MEDIA_XFP:269 case MC_CMD_MEDIA_SFP_PLUS:270 case MC_CMD_MEDIA_QSFP_PLUS:271 return PORT_FIBRE;272 273 case MC_CMD_MEDIA_BASE_T:274 return PORT_TP;275 276 default:277 return PORT_OTHER;278 }279}280 281void efx_mcdi_phy_decode_link(struct efx_nic *efx,282 struct efx_link_state *link_state,283 u32 speed, u32 flags, u32 fcntl)284{285 switch (fcntl) {286 case MC_CMD_FCNTL_AUTO:287 WARN_ON(1); /* This is not a link mode */288 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;289 break;290 case MC_CMD_FCNTL_BIDIR:291 link_state->fc = EFX_FC_TX | EFX_FC_RX;292 break;293 case MC_CMD_FCNTL_RESPOND:294 link_state->fc = EFX_FC_RX;295 break;296 default:297 WARN_ON(1);298 fallthrough;299 case MC_CMD_FCNTL_OFF:300 link_state->fc = 0;301 break;302 }303 304 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));305 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));306 link_state->speed = speed;307}308 309/* The semantics of the ethtool FEC mode bitmask are not well defined,310 * particularly the meaning of combinations of bits. Which means we get to311 * define our own semantics, as follows:312 * OFF overrides any other bits, and means "disable all FEC" (with the313 * exception of 25G KR4/CR4, where it is not possible to reject it if AN314 * partner requests it).315 * AUTO on its own means use cable requirements and link partner autoneg with316 * fw-default preferences for the cable type.317 * AUTO and either RS or BASER means use the specified FEC type if cable and318 * link partner support it, otherwise autoneg/fw-default.319 * RS or BASER alone means use the specified FEC type if cable and link partner320 * support it and either requests it, otherwise no FEC.321 * Both RS and BASER (whether AUTO or not) means use FEC if cable and link322 * partner support it, preferring RS to BASER.323 */324u32 ethtool_fec_caps_to_mcdi(u32 supported_cap, u32 ethtool_cap)325{326 u32 ret = 0;327 328 if (ethtool_cap & ETHTOOL_FEC_OFF)329 return 0;330 331 if (ethtool_cap & ETHTOOL_FEC_AUTO)332 ret |= ((1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) |333 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) |334 (1 << MC_CMD_PHY_CAP_RS_FEC_LBN)) & supported_cap;335 if (ethtool_cap & ETHTOOL_FEC_RS &&336 supported_cap & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN))337 ret |= (1 << MC_CMD_PHY_CAP_RS_FEC_LBN) |338 (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN);339 if (ethtool_cap & ETHTOOL_FEC_BASER) {340 if (supported_cap & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN))341 ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) |342 (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN);343 if (supported_cap & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN))344 ret |= (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) |345 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN);346 }347 return ret;348}349 350/* Invert ethtool_fec_caps_to_mcdi. There are two combinations that function351 * can never produce, (baser xor rs) and neither req; the implementation below352 * maps both of those to AUTO. This should never matter, and it's not clear353 * what a better mapping would be anyway.354 */355u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g)356{357 bool rs = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN),358 rs_req = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN),359 baser = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN)360 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN),361 baser_req = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN)362 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN);363 364 if (!baser && !rs)365 return ETHTOOL_FEC_OFF;366 return (rs_req ? ETHTOOL_FEC_RS : 0) |367 (baser_req ? ETHTOOL_FEC_BASER : 0) |368 (baser == baser_req && rs == rs_req ? 0 : ETHTOOL_FEC_AUTO);369}370 371/* Verify that the forced flow control settings (!EFX_FC_AUTO) are372 * supported by the link partner. Warn the user if this isn't the case373 */374void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)375{376 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;377 u32 rmtadv;378 379 /* The link partner capabilities are only relevant if the380 * link supports flow control autonegotiation381 */382 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))383 return;384 385 /* If flow control autoneg is supported and enabled, then fine */386 if (efx->wanted_fc & EFX_FC_AUTO)387 return;388 389 rmtadv = 0;390 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))391 rmtadv |= ADVERTISED_Pause;392 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))393 rmtadv |= ADVERTISED_Asym_Pause;394 395 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)396 netif_err(efx, link, efx->net_dev,397 "warning: link partner doesn't support pause frames");398}399 400bool efx_mcdi_phy_poll(struct efx_nic *efx)401{402 struct efx_link_state old_state = efx->link_state;403 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);404 int rc;405 406 WARN_ON(!mutex_is_locked(&efx->mac_lock));407 408 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);409 410 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,411 outbuf, sizeof(outbuf), NULL);412 if (rc)413 efx->link_state.up = false;414 else415 efx_mcdi_phy_decode_link(416 efx, &efx->link_state,417 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),418 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),419 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));420 421 return !efx_link_state_equal(&efx->link_state, &old_state);422}423 424int efx_mcdi_phy_probe(struct efx_nic *efx)425{426 struct efx_mcdi_phy_data *phy_data;427 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);428 u32 caps;429 int rc;430 431 /* Initialise and populate phy_data */432 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);433 if (phy_data == NULL)434 return -ENOMEM;435 436 rc = efx_mcdi_get_phy_cfg(efx, phy_data);437 if (rc != 0)438 goto fail;439 440 /* Read initial link advertisement */441 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);442 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,443 outbuf, sizeof(outbuf), NULL);444 if (rc)445 goto fail;446 447 /* Fill out nic state */448 efx->phy_data = phy_data;449 efx->phy_type = phy_data->type;450 451 efx->mdio_bus = phy_data->channel;452 efx->mdio.prtad = phy_data->port;453 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);454 efx->mdio.mode_support = 0;455 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))456 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;457 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))458 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;459 460 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);461 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))462 mcdi_to_ethtool_linkset(phy_data->media, caps,463 efx->link_advertising);464 else465 phy_data->forced_cap = caps;466 467 /* Assert that we can map efx -> mcdi loopback modes */468 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);469 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);470 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);471 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);472 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);473 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);474 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);475 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);476 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);477 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);478 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);479 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);480 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);481 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);482 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);483 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);484 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);485 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);486 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);487 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);488 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);489 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);490 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);491 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);492 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);493 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);494 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);495 496 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);497 if (rc != 0)498 goto fail;499 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,500 * but by convention we don't501 */502 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);503 504 /* Set the initial link mode */505 efx_mcdi_phy_decode_link(efx, &efx->link_state,506 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),507 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),508 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));509 510 /* Record the initial FEC configuration (or nearest approximation511 * representable in the ethtool configuration space)512 */513 efx->fec_config = mcdi_fec_caps_to_ethtool(caps,514 efx->link_state.speed == 25000 ||515 efx->link_state.speed == 50000);516 517 /* Default to Autonegotiated flow control if the PHY supports it */518 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;519 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))520 efx->wanted_fc |= EFX_FC_AUTO;521 efx_link_set_wanted_fc(efx, efx->wanted_fc);522 523 return 0;524 525fail:526 kfree(phy_data);527 return rc;528}529 530void efx_mcdi_phy_remove(struct efx_nic *efx)531{532 struct efx_mcdi_phy_data *phy_data = efx->phy_data;533 534 efx->phy_data = NULL;535 kfree(phy_data);536}537 538void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, struct ethtool_link_ksettings *cmd)539{540 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;541 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);542 int rc;543 544 cmd->base.speed = efx->link_state.speed;545 cmd->base.duplex = efx->link_state.fd;546 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);547 cmd->base.phy_address = phy_cfg->port;548 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg);549 cmd->base.mdio_support = (efx->mdio.mode_support &550 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));551 552 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap,553 cmd->link_modes.supported);554 memcpy(cmd->link_modes.advertising, efx->link_advertising,555 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));556 557 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);558 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,559 outbuf, sizeof(outbuf), NULL);560 if (rc)561 return;562 mcdi_to_ethtool_linkset(phy_cfg->media,563 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP),564 cmd->link_modes.lp_advertising);565}566 567int efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, const struct ethtool_link_ksettings *cmd)568{569 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;570 u32 caps;571 int rc;572 573 if (cmd->base.autoneg) {574 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) |575 1 << MC_CMD_PHY_CAP_AN_LBN);576 } else if (cmd->base.duplex) {577 switch (cmd->base.speed) {578 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;579 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;580 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;581 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;582 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;583 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break;584 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break;585 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break;586 default: return -EINVAL;587 }588 } else {589 switch (cmd->base.speed) {590 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;591 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;592 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;593 default: return -EINVAL;594 }595 }596 597 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, efx->fec_config);598 599 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),600 efx->loopback_mode, 0);601 if (rc)602 return rc;603 604 if (cmd->base.autoneg) {605 efx_link_set_advertising(efx, cmd->link_modes.advertising);606 phy_cfg->forced_cap = 0;607 } else {608 efx_link_clear_advertising(efx);609 phy_cfg->forced_cap = caps;610 }611 return 0;612}613 614int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec)615{616 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_V2_LEN);617 u32 caps, active, speed; /* MCDI format */618 bool is_25g = false;619 size_t outlen;620 int rc;621 622 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);623 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,624 outbuf, sizeof(outbuf), &outlen);625 if (rc)626 return rc;627 if (outlen < MC_CMD_GET_LINK_OUT_V2_LEN)628 return -EOPNOTSUPP;629 630 /* behaviour for 25G/50G links depends on 25G BASER bit */631 speed = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_LINK_SPEED);632 is_25g = speed == 25000 || speed == 50000;633 634 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_CAP);635 fec->fec = mcdi_fec_caps_to_ethtool(caps, is_25g);636 /* BASER is never supported on 100G */637 if (speed == 100000)638 fec->fec &= ~ETHTOOL_FEC_BASER;639 640 active = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_FEC_TYPE);641 switch (active) {642 case MC_CMD_FEC_NONE:643 fec->active_fec = ETHTOOL_FEC_OFF;644 break;645 case MC_CMD_FEC_BASER:646 fec->active_fec = ETHTOOL_FEC_BASER;647 break;648 case MC_CMD_FEC_RS:649 fec->active_fec = ETHTOOL_FEC_RS;650 break;651 default:652 netif_warn(efx, hw, efx->net_dev,653 "Firmware reports unrecognised FEC_TYPE %u\n",654 active);655 /* We don't know what firmware has picked. AUTO is as good a656 * "can't happen" value as any other.657 */658 fec->active_fec = ETHTOOL_FEC_AUTO;659 break;660 }661 662 return 0;663}664 665/* Basic validation to ensure that the caps we are going to attempt to set are666 * in fact supported by the adapter. Note that 'no FEC' is always supported.667 */668static int ethtool_fec_supported(u32 supported_cap, u32 ethtool_cap)669{670 if (ethtool_cap & ETHTOOL_FEC_OFF)671 return 0;672 673 if (ethtool_cap &&674 !ethtool_fec_caps_to_mcdi(supported_cap, ethtool_cap))675 return -EINVAL;676 return 0;677}678 679int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, const struct ethtool_fecparam *fec)680{681 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;682 u32 caps;683 int rc;684 685 rc = ethtool_fec_supported(phy_cfg->supported_cap, fec->fec);686 if (rc)687 return rc;688 689 /* Work out what efx_mcdi_phy_set_link_ksettings() would produce from690 * saved advertising bits691 */692 if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising))693 caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) |694 1 << MC_CMD_PHY_CAP_AN_LBN);695 else696 caps = phy_cfg->forced_cap;697 698 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, fec->fec);699 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),700 efx->loopback_mode, 0);701 if (rc)702 return rc;703 704 /* Record the new FEC setting for subsequent set_link calls */705 efx->fec_config = fec->fec;706 return 0;707}708 709int efx_mcdi_phy_test_alive(struct efx_nic *efx)710{711 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);712 size_t outlen;713 int rc;714 715 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);716 717 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,718 outbuf, sizeof(outbuf), &outlen);719 if (rc)720 return rc;721 722 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)723 return -EIO;724 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)725 return -EINVAL;726 727 return 0;728}729 730int efx_mcdi_port_reconfigure(struct efx_nic *efx)731{732 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;733 u32 caps = (efx->link_advertising[0] ?734 ethtool_linkset_to_mcdi_cap(efx->link_advertising) :735 phy_cfg->forced_cap);736 737 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, efx->fec_config);738 739 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),740 efx->loopback_mode, 0);741}742 743static const char *const mcdi_sft9001_cable_diag_names[] = {744 "cable.pairA.length",745 "cable.pairB.length",746 "cable.pairC.length",747 "cable.pairD.length",748 "cable.pairA.status",749 "cable.pairB.status",750 "cable.pairC.status",751 "cable.pairD.status",752};753 754static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,755 int *results)756{757 unsigned int retry, i, count = 0;758 size_t outlen;759 u32 status;760 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);761 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);762 u8 *ptr;763 int rc;764 765 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);766 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);767 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,768 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);769 if (rc)770 goto out;771 772 /* Wait up to 10s for BIST to finish */773 for (retry = 0; retry < 100; ++retry) {774 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);775 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,776 outbuf, sizeof(outbuf), &outlen);777 if (rc)778 goto out;779 780 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);781 if (status != MC_CMD_POLL_BIST_RUNNING)782 goto finished;783 784 msleep(100);785 }786 787 rc = -ETIMEDOUT;788 goto out;789 790finished:791 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;792 793 /* SFT9001 specific cable diagnostics output */794 if (efx->phy_type == PHY_TYPE_SFT9001B &&795 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||796 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {797 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);798 if (status == MC_CMD_POLL_BIST_PASSED &&799 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {800 for (i = 0; i < 8; i++) {801 results[count + i] =802 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],803 EFX_DWORD_0);804 }805 }806 count += 8;807 }808 rc = count;809 810out:811 return rc;812}813 814int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, unsigned int flags)815{816 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;817 u32 mode;818 int rc;819 820 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {821 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);822 if (rc < 0)823 return rc;824 825 results += rc;826 }827 828 /* If we support both LONG and SHORT, then run each in response to829 * break or not. Otherwise, run the one we support830 */831 mode = 0;832 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {833 if ((flags & ETH_TEST_FL_OFFLINE) &&834 (phy_cfg->flags &835 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))836 mode = MC_CMD_PHY_BIST_CABLE_LONG;837 else838 mode = MC_CMD_PHY_BIST_CABLE_SHORT;839 } else if (phy_cfg->flags &840 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))841 mode = MC_CMD_PHY_BIST_CABLE_LONG;842 843 if (mode != 0) {844 rc = efx_mcdi_bist(efx, mode, results);845 if (rc < 0)846 return rc;847 results += rc;848 }849 850 return 0;851}852 853const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index)854{855 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;856 857 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {858 if (index == 0)859 return "bist";860 --index;861 }862 863 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |864 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {865 if (index == 0)866 return "cable";867 --index;868 869 if (efx->phy_type == PHY_TYPE_SFT9001B) {870 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))871 return mcdi_sft9001_cable_diag_names[index];872 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);873 }874 }875 876 return NULL;877}878 879#define SFP_PAGE_SIZE 128880#define SFF_DIAG_TYPE_OFFSET 92881#define SFF_DIAG_ADDR_CHANGE BIT(2)882#define SFF_8079_NUM_PAGES 2883#define SFF_8472_NUM_PAGES 4884#define SFF_8436_NUM_PAGES 5885#define SFF_DMT_LEVEL_OFFSET 94886 887/** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom888 * @efx: NIC context889 * @page: EEPROM page number890 * @data: Destination data pointer891 * @offset: Offset in page to copy from in to data892 * @space: Space available in data893 *894 * Return:895 * >=0 - amount of data copied896 * <0 - error897 */898static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx,899 unsigned int page,900 u8 *data, ssize_t offset,901 ssize_t space)902{903 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);904 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);905 unsigned int payload_len;906 unsigned int to_copy;907 size_t outlen;908 int rc;909 910 if (offset > SFP_PAGE_SIZE)911 return -EINVAL;912 913 to_copy = min(space, SFP_PAGE_SIZE - offset);914 915 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);916 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO,917 inbuf, sizeof(inbuf),918 outbuf, sizeof(outbuf),919 &outlen);920 921 if (rc)922 return rc;923 924 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +925 SFP_PAGE_SIZE))926 return -EIO;927 928 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN);929 if (payload_len != SFP_PAGE_SIZE)930 return -EIO;931 932 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset,933 to_copy);934 935 return to_copy;936}937 938static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx,939 unsigned int page,940 u8 byte)941{942 u8 data;943 int rc;944 945 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1);946 if (rc == 1)947 return data;948 949 return rc;950}951 952static int efx_mcdi_phy_diag_type(struct efx_nic *efx)953{954 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */955 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,956 SFF_DIAG_TYPE_OFFSET);957}958 959static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx)960{961 /* Page zero of the EEPROM includes the DMT level at byte 94. */962 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,963 SFF_DMT_LEVEL_OFFSET);964}965 966static u32 efx_mcdi_phy_module_type(struct efx_nic *efx)967{968 struct efx_mcdi_phy_data *phy_data = efx->phy_data;969 970 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS)971 return phy_data->media;972 973 /* A QSFP+ NIC may actually have an SFP+ module attached.974 * The ID is page 0, byte 0.975 * QSFP28 is of type SFF_8636, however, this is treated976 * the same by ethtool, so we can also treat them the same.977 */978 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) {979 case 0x3: /* SFP */980 return MC_CMD_MEDIA_SFP_PLUS;981 case 0xc: /* QSFP */982 case 0xd: /* QSFP+ */983 case 0x11: /* QSFP28 */984 return MC_CMD_MEDIA_QSFP_PLUS;985 default:986 return 0;987 }988}989 990int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, struct ethtool_eeprom *ee, u8 *data)991{992 int rc;993 ssize_t space_remaining = ee->len;994 unsigned int page_off;995 bool ignore_missing;996 int num_pages;997 int page;998 999 switch (efx_mcdi_phy_module_type(efx)) {1000 case MC_CMD_MEDIA_SFP_PLUS:1001 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ?1002 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES;1003 page = 0;1004 ignore_missing = false;1005 break;1006 case MC_CMD_MEDIA_QSFP_PLUS:1007 num_pages = SFF_8436_NUM_PAGES;1008 page = -1; /* We obtain the lower page by asking for -1. */1009 ignore_missing = true; /* Ignore missing pages after page 0. */1010 break;1011 default:1012 return -EOPNOTSUPP;1013 }1014 1015 page_off = ee->offset % SFP_PAGE_SIZE;1016 page += ee->offset / SFP_PAGE_SIZE;1017 1018 while (space_remaining && (page < num_pages)) {1019 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page,1020 data, page_off,1021 space_remaining);1022 1023 if (rc > 0) {1024 space_remaining -= rc;1025 data += rc;1026 page_off = 0;1027 page++;1028 } else if (rc == 0) {1029 space_remaining = 0;1030 } else if (ignore_missing && (page > 0)) {1031 int intended_size = SFP_PAGE_SIZE - page_off;1032 1033 space_remaining -= intended_size;1034 if (space_remaining < 0) {1035 space_remaining = 0;1036 } else {1037 memset(data, 0, intended_size);1038 data += intended_size;1039 page_off = 0;1040 page++;1041 rc = 0;1042 }1043 } else {1044 return rc;1045 }1046 }1047 1048 return 0;1049}1050 1051int efx_mcdi_phy_get_module_info(struct efx_nic *efx, struct ethtool_modinfo *modinfo)1052{1053 int sff_8472_level;1054 int diag_type;1055 1056 switch (efx_mcdi_phy_module_type(efx)) {1057 case MC_CMD_MEDIA_SFP_PLUS:1058 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx);1059 1060 /* If we can't read the diagnostics level we have none. */1061 if (sff_8472_level < 0)1062 return -EOPNOTSUPP;1063 1064 /* Check if this module requires the (unsupported) address1065 * change operation.1066 */1067 diag_type = efx_mcdi_phy_diag_type(efx);1068 1069 if (sff_8472_level == 0 ||1070 (diag_type & SFF_DIAG_ADDR_CHANGE)) {1071 modinfo->type = ETH_MODULE_SFF_8079;1072 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;1073 } else {1074 modinfo->type = ETH_MODULE_SFF_8472;1075 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;1076 }1077 break;1078 1079 case MC_CMD_MEDIA_QSFP_PLUS:1080 modinfo->type = ETH_MODULE_SFF_8436;1081 modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN;1082 break;1083 1084 default:1085 return -EOPNOTSUPP;1086 }1087 1088 return 0;1089}1090 1091static unsigned int efx_calc_mac_mtu(struct efx_nic *efx)1092{1093 return EFX_MAX_FRAME_LEN(efx->net_dev->mtu);1094}1095 1096int efx_mcdi_set_mac(struct efx_nic *efx)1097{1098 u32 fcntl;1099 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);1100 1101 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);1102 1103 /* This has no effect on EF10 */1104 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),1105 efx->net_dev->dev_addr);1106 1107 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, efx_calc_mac_mtu(efx));1108 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);1109 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS,1110 SET_MAC_IN_FLAG_INCLUDE_FCS,1111 !!(efx->net_dev->features & NETIF_F_RXFCS));1112 1113 switch (efx->wanted_fc) {1114 case EFX_FC_RX | EFX_FC_TX:1115 fcntl = MC_CMD_FCNTL_BIDIR;1116 break;1117 case EFX_FC_RX:1118 fcntl = MC_CMD_FCNTL_RESPOND;1119 break;1120 default:1121 fcntl = MC_CMD_FCNTL_OFF;1122 break;1123 }1124 if (efx->wanted_fc & EFX_FC_AUTO)1125 fcntl = MC_CMD_FCNTL_AUTO;1126 if (efx->fc_disable)1127 fcntl = MC_CMD_FCNTL_OFF;1128 1129 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);1130 1131 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),1132 NULL, 0, NULL);1133}1134 1135int efx_mcdi_set_mtu(struct efx_nic *efx)1136{1137 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_MAC_EXT_IN_LEN);1138 1139 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);1140 1141 MCDI_SET_DWORD(inbuf, SET_MAC_EXT_IN_MTU, efx_calc_mac_mtu(efx));1142 1143 MCDI_POPULATE_DWORD_1(inbuf, SET_MAC_EXT_IN_CONTROL,1144 SET_MAC_EXT_IN_CFG_MTU, 1);1145 1146 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, inbuf, sizeof(inbuf),1147 NULL, 0, NULL);1148}1149 1150enum efx_stats_action {1151 EFX_STATS_ENABLE,1152 EFX_STATS_DISABLE,1153 EFX_STATS_PULL,1154};1155 1156static int efx_mcdi_mac_stats(struct efx_nic *efx,1157 enum efx_stats_action action, int clear)1158{1159 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);1160 int rc;1161 int change = action == EFX_STATS_PULL ? 0 : 1;1162 int enable = action == EFX_STATS_ENABLE ? 1 : 0;1163 int period = action == EFX_STATS_ENABLE ? 1000 : 0;1164 dma_addr_t dma_addr = efx->stats_buffer.dma_addr;1165 u32 dma_len = action != EFX_STATS_DISABLE ?1166 efx->num_mac_stats * sizeof(u64) : 0;1167 1168 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);1169 1170 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);1171 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD,1172 MAC_STATS_IN_DMA, !!enable,1173 MAC_STATS_IN_CLEAR, clear,1174 MAC_STATS_IN_PERIODIC_CHANGE, change,1175 MAC_STATS_IN_PERIODIC_ENABLE, enable,1176 MAC_STATS_IN_PERIODIC_CLEAR, 0,1177 MAC_STATS_IN_PERIODIC_NOEVENT, 1,1178 MAC_STATS_IN_PERIOD_MS, period);1179 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);1180 1181 if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0)1182 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, efx->vport_id);1183 1184 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),1185 NULL, 0, NULL);1186 /* Expect ENOENT if DMA queues have not been set up */1187 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues)))1188 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf),1189 NULL, 0, rc);1190 return rc;1191}1192 1193void efx_mcdi_mac_start_stats(struct efx_nic *efx)1194{1195 __le64 *dma_stats = efx->stats_buffer.addr;1196 1197 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID;1198 1199 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0);1200}1201 1202void efx_mcdi_mac_stop_stats(struct efx_nic *efx)1203{1204 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0);1205}1206 1207#define EFX_MAC_STATS_WAIT_US 1001208#define EFX_MAC_STATS_WAIT_ATTEMPTS 101209 1210void efx_mcdi_mac_pull_stats(struct efx_nic *efx)1211{1212 __le64 *dma_stats = efx->stats_buffer.addr;1213 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS;1214 1215 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID;1216 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0);1217 1218 while (dma_stats[efx->num_mac_stats - 1] ==1219 EFX_MC_STATS_GENERATION_INVALID &&1220 attempts-- != 0)1221 udelay(EFX_MAC_STATS_WAIT_US);1222}1223 1224int efx_mcdi_mac_init_stats(struct efx_nic *efx)1225{1226 int rc;1227 1228 if (!efx->num_mac_stats)1229 return 0;1230 1231 /* Allocate buffer for stats */1232 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,1233 efx->num_mac_stats * sizeof(u64), GFP_KERNEL);1234 if (rc) {1235 netif_warn(efx, probe, efx->net_dev,1236 "failed to allocate DMA buffer: %d\n", rc);1237 return rc;1238 }1239 1240 netif_dbg(efx, probe, efx->net_dev,1241 "stats buffer at %llx (virt %p phys %llx)\n",1242 (u64) efx->stats_buffer.dma_addr,1243 efx->stats_buffer.addr,1244 (u64) virt_to_phys(efx->stats_buffer.addr));1245 1246 return 0;1247}1248 1249void efx_mcdi_mac_fini_stats(struct efx_nic *efx)1250{1251 efx_nic_free_buffer(efx, &efx->stats_buffer);1252}1253 1254/* Get physical port number (EF10 only; on Siena it is same as PF number) */1255int efx_mcdi_port_get_number(struct efx_nic *efx)1256{1257 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN);1258 int rc;1259 1260 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0,1261 outbuf, sizeof(outbuf), NULL);1262 if (rc)1263 return rc;1264 1265 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT);1266}1267 1268static unsigned int efx_mcdi_event_link_speed[] = {1269 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,1270 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,1271 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,1272 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000,1273 [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000,1274 [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000,1275 [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000,1276};1277 1278void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)1279{1280 u32 flags, fcntl, speed, lpa;1281 1282 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);1283 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));1284 speed = efx_mcdi_event_link_speed[speed];1285 1286 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);1287 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);1288 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);1289 1290 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),1291 * which is only run after flushing the event queues. Therefore, it1292 * is safe to modify the link state outside of the mac_lock here.1293 */1294 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);1295 1296 efx_mcdi_phy_check_fcntl(efx, lpa);1297 1298 efx_link_status_changed(efx);1299}1300