1// SPDX-License-Identifier: GPL-2.0-only 2/**************************************************************************** 3 * Driver for Solarflare network controllers and boards 4 * Copyright 2018 Solarflare Communications Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published 8 * 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 else 65 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_BIT 185} 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_BIT 228 229 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 to 311 * define our own semantics, as follows: 312 * OFF overrides any other bits, and means "disable all FEC" (with the 313 * exception of 25G KR4/CR4, where it is not possible to reject it if AN 314 * partner requests it). 315 * AUTO on its own means use cable requirements and link partner autoneg with 316 * fw-default preferences for the cable type. 317 * AUTO and either RS or BASER means use the specified FEC type if cable and 318 * link partner support it, otherwise autoneg/fw-default. 319 * RS or BASER alone means use the specified FEC type if cable and link partner 320 * support it and either requests it, otherwise no FEC. 321 * Both RS and BASER (whether AUTO or not) means use FEC if cable and link 322 * 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 function 351 * can never produce, (baser xor rs) and neither req; the implementation below 352 * maps both of those to AUTO. This should never matter, and it's not clear 353 * 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) are 372 * supported by the link partner. Warn the user if this isn't the case 373 */ 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 the 380 * link supports flow control autonegotiation 381 */ 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 else 415 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 else 465 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't 501 */ 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 approximation 511 * 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 a 656 * "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 are 666 * 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 from 690 * saved advertising bits 691 */ 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 else 696 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 to 829 * break or not. Otherwise, run the one we support 830 */ 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 else 838 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 128 880#define SFF_DIAG_TYPE_OFFSET 92 881#define SFF_DIAG_ADDR_CHANGE BIT(2) 882#define SFF_8079_NUM_PAGES 2 883#define SFF_8472_NUM_PAGES 4 884#define SFF_8436_NUM_PAGES 5 885#define SFF_DMT_LEVEL_OFFSET 94 886 887/** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom 888 * @efx: NIC context 889 * @page: EEPROM page number 890 * @data: Destination data pointer 891 * @offset: Offset in page to copy from in to data 892 * @space: Space available in data 893 * 894 * Return: 895 * >=0 - amount of data copied 896 * <0 - error 897 */ 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 treated 976 * 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) address 1065 * 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 100 1208#define EFX_MAC_STATS_WAIT_ATTEMPTS 10 1209 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, it 1292 * 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