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 15 int 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 50 fail: 51 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 52 return rc; 53 } 54 55 void 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 70 int 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 int rc; 75 76 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); 77 78 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); 79 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); 80 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); 81 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); 82 83 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), 84 NULL, 0, NULL); 85 return rc; 86 } 87 88 int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) 89 { 90 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN); 91 size_t outlen; 92 int rc; 93 94 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, 95 outbuf, sizeof(outbuf), &outlen); 96 if (rc) 97 goto fail; 98 99 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST + 100 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) { 101 rc = -EIO; 102 goto fail; 103 } 104 105 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED); 106 107 return 0; 108 109 fail: 110 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 111 return rc; 112 } 113 114 void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset) 115 { 116 #define SET_BIT(name) __set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ 117 linkset) 118 119 bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS); 120 switch (media) { 121 case MC_CMD_MEDIA_KX4: 122 SET_BIT(Backplane); 123 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 124 SET_BIT(1000baseKX_Full); 125 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 126 SET_BIT(10000baseKX4_Full); 127 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) 128 SET_BIT(40000baseKR4_Full); 129 break; 130 131 case MC_CMD_MEDIA_XFP: 132 case MC_CMD_MEDIA_SFP_PLUS: 133 case MC_CMD_MEDIA_QSFP_PLUS: 134 SET_BIT(FIBRE); 135 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) { 136 SET_BIT(1000baseT_Full); 137 SET_BIT(1000baseX_Full); 138 } 139 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) { 140 SET_BIT(10000baseCR_Full); 141 SET_BIT(10000baseLR_Full); 142 SET_BIT(10000baseSR_Full); 143 } 144 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) { 145 SET_BIT(40000baseCR4_Full); 146 SET_BIT(40000baseSR4_Full); 147 } 148 if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN)) { 149 SET_BIT(100000baseCR4_Full); 150 SET_BIT(100000baseSR4_Full); 151 } 152 if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN)) { 153 SET_BIT(25000baseCR_Full); 154 SET_BIT(25000baseSR_Full); 155 } 156 if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN)) 157 SET_BIT(50000baseCR2_Full); 158 break; 159 160 case MC_CMD_MEDIA_BASE_T: 161 SET_BIT(TP); 162 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) 163 SET_BIT(10baseT_Half); 164 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) 165 SET_BIT(10baseT_Full); 166 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) 167 SET_BIT(100baseT_Half); 168 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) 169 SET_BIT(100baseT_Full); 170 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) 171 SET_BIT(1000baseT_Half); 172 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 173 SET_BIT(1000baseT_Full); 174 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 175 SET_BIT(10000baseT_Full); 176 break; 177 } 178 179 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 180 SET_BIT(Pause); 181 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 182 SET_BIT(Asym_Pause); 183 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 184 SET_BIT(Autoneg); 185 186 #undef SET_BIT 187 } 188 189 u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset) 190 { 191 u32 result = 0; 192 193 #define TEST_BIT(name) test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ 194 linkset) 195 196 if (TEST_BIT(10baseT_Half)) 197 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); 198 if (TEST_BIT(10baseT_Full)) 199 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); 200 if (TEST_BIT(100baseT_Half)) 201 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); 202 if (TEST_BIT(100baseT_Full)) 203 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); 204 if (TEST_BIT(1000baseT_Half)) 205 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); 206 if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full) || 207 TEST_BIT(1000baseX_Full)) 208 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); 209 if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full) || 210 TEST_BIT(10000baseCR_Full) || TEST_BIT(10000baseLR_Full) || 211 TEST_BIT(10000baseSR_Full)) 212 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); 213 if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full) || 214 TEST_BIT(40000baseSR4_Full)) 215 result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN); 216 if (TEST_BIT(100000baseCR4_Full) || TEST_BIT(100000baseSR4_Full)) 217 result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN); 218 if (TEST_BIT(25000baseCR_Full) || TEST_BIT(25000baseSR_Full)) 219 result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN); 220 if (TEST_BIT(50000baseCR2_Full)) 221 result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN); 222 if (TEST_BIT(Pause)) 223 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); 224 if (TEST_BIT(Asym_Pause)) 225 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); 226 if (TEST_BIT(Autoneg)) 227 result |= (1 << MC_CMD_PHY_CAP_AN_LBN); 228 229 #undef TEST_BIT 230 231 return result; 232 } 233 234 u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) 235 { 236 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 237 enum efx_phy_mode mode, supported; 238 u32 flags; 239 240 /* TODO: Advertise the capabilities supported by this PHY */ 241 supported = 0; 242 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN)) 243 supported |= PHY_MODE_TX_DISABLED; 244 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN)) 245 supported |= PHY_MODE_LOW_POWER; 246 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN)) 247 supported |= PHY_MODE_OFF; 248 249 mode = efx->phy_mode & supported; 250 251 flags = 0; 252 if (mode & PHY_MODE_TX_DISABLED) 253 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN); 254 if (mode & PHY_MODE_LOW_POWER) 255 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN); 256 if (mode & PHY_MODE_OFF) 257 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN); 258 259 return flags; 260 } 261 262 u8 mcdi_to_ethtool_media(u32 media) 263 { 264 switch (media) { 265 case MC_CMD_MEDIA_XAUI: 266 case MC_CMD_MEDIA_CX4: 267 case MC_CMD_MEDIA_KX4: 268 return PORT_OTHER; 269 270 case MC_CMD_MEDIA_XFP: 271 case MC_CMD_MEDIA_SFP_PLUS: 272 case MC_CMD_MEDIA_QSFP_PLUS: 273 return PORT_FIBRE; 274 275 case MC_CMD_MEDIA_BASE_T: 276 return PORT_TP; 277 278 default: 279 return PORT_OTHER; 280 } 281 } 282 283 void efx_mcdi_phy_decode_link(struct efx_nic *efx, 284 struct efx_link_state *link_state, 285 u32 speed, u32 flags, u32 fcntl) 286 { 287 switch (fcntl) { 288 case MC_CMD_FCNTL_AUTO: 289 WARN_ON(1); /* This is not a link mode */ 290 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; 291 break; 292 case MC_CMD_FCNTL_BIDIR: 293 link_state->fc = EFX_FC_TX | EFX_FC_RX; 294 break; 295 case MC_CMD_FCNTL_RESPOND: 296 link_state->fc = EFX_FC_RX; 297 break; 298 default: 299 WARN_ON(1); 300 fallthrough; 301 case MC_CMD_FCNTL_OFF: 302 link_state->fc = 0; 303 break; 304 } 305 306 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN)); 307 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN)); 308 link_state->speed = speed; 309 } 310 311 /* The semantics of the ethtool FEC mode bitmask are not well defined, 312 * particularly the meaning of combinations of bits. Which means we get to 313 * define our own semantics, as follows: 314 * OFF overrides any other bits, and means "disable all FEC" (with the 315 * exception of 25G KR4/CR4, where it is not possible to reject it if AN 316 * partner requests it). 317 * AUTO on its own means use cable requirements and link partner autoneg with 318 * fw-default preferences for the cable type. 319 * AUTO and either RS or BASER means use the specified FEC type if cable and 320 * link partner support it, otherwise autoneg/fw-default. 321 * RS or BASER alone means use the specified FEC type if cable and link partner 322 * support it and either requests it, otherwise no FEC. 323 * Both RS and BASER (whether AUTO or not) means use FEC if cable and link 324 * partner support it, preferring RS to BASER. 325 */ 326 u32 ethtool_fec_caps_to_mcdi(u32 supported_cap, u32 ethtool_cap) 327 { 328 u32 ret = 0; 329 330 if (ethtool_cap & ETHTOOL_FEC_OFF) 331 return 0; 332 333 if (ethtool_cap & ETHTOOL_FEC_AUTO) 334 ret |= ((1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | 335 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | 336 (1 << MC_CMD_PHY_CAP_RS_FEC_LBN)) & supported_cap; 337 if (ethtool_cap & ETHTOOL_FEC_RS && 338 supported_cap & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN)) 339 ret |= (1 << MC_CMD_PHY_CAP_RS_FEC_LBN) | 340 (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN); 341 if (ethtool_cap & ETHTOOL_FEC_BASER) { 342 if (supported_cap & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN)) 343 ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | 344 (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN); 345 if (supported_cap & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN)) 346 ret |= (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | 347 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN); 348 } 349 return ret; 350 } 351 352 /* Invert ethtool_fec_caps_to_mcdi. There are two combinations that function 353 * can never produce, (baser xor rs) and neither req; the implementation below 354 * maps both of those to AUTO. This should never matter, and it's not clear 355 * what a better mapping would be anyway. 356 */ 357 u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g) 358 { 359 bool rs = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN), 360 rs_req = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN), 361 baser = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) 362 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN), 363 baser_req = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN) 364 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN); 365 366 if (!baser && !rs) 367 return ETHTOOL_FEC_OFF; 368 return (rs_req ? ETHTOOL_FEC_RS : 0) | 369 (baser_req ? ETHTOOL_FEC_BASER : 0) | 370 (baser == baser_req && rs == rs_req ? 0 : ETHTOOL_FEC_AUTO); 371 } 372 373 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are 374 * supported by the link partner. Warn the user if this isn't the case 375 */ 376 void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) 377 { 378 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 379 u32 rmtadv; 380 381 /* The link partner capabilities are only relevant if the 382 * link supports flow control autonegotiation 383 */ 384 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 385 return; 386 387 /* If flow control autoneg is supported and enabled, then fine */ 388 if (efx->wanted_fc & EFX_FC_AUTO) 389 return; 390 391 rmtadv = 0; 392 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 393 rmtadv |= ADVERTISED_Pause; 394 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 395 rmtadv |= ADVERTISED_Asym_Pause; 396 397 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) 398 netif_err(efx, link, efx->net_dev, 399 "warning: link partner doesn't support pause frames"); 400 } 401 402 bool efx_mcdi_phy_poll(struct efx_nic *efx) 403 { 404 struct efx_link_state old_state = efx->link_state; 405 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 406 int rc; 407 408 WARN_ON(!mutex_is_locked(&efx->mac_lock)); 409 410 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 411 412 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 413 outbuf, sizeof(outbuf), NULL); 414 if (rc) 415 efx->link_state.up = false; 416 else 417 efx_mcdi_phy_decode_link( 418 efx, &efx->link_state, 419 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 420 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 421 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 422 423 return !efx_link_state_equal(&efx->link_state, &old_state); 424 } 425 426 int efx_mcdi_phy_probe(struct efx_nic *efx) 427 { 428 struct efx_mcdi_phy_data *phy_data; 429 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 430 u32 caps; 431 int rc; 432 433 /* Initialise and populate phy_data */ 434 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); 435 if (phy_data == NULL) 436 return -ENOMEM; 437 438 rc = efx_mcdi_get_phy_cfg(efx, phy_data); 439 if (rc != 0) 440 goto fail; 441 442 /* Read initial link advertisement */ 443 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 444 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 445 outbuf, sizeof(outbuf), NULL); 446 if (rc) 447 goto fail; 448 449 /* Fill out nic state */ 450 efx->phy_data = phy_data; 451 efx->phy_type = phy_data->type; 452 453 efx->mdio_bus = phy_data->channel; 454 efx->mdio.prtad = phy_data->port; 455 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); 456 efx->mdio.mode_support = 0; 457 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) 458 efx->mdio.mode_support |= MDIO_SUPPORTS_C22; 459 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) 460 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 461 462 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); 463 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) 464 mcdi_to_ethtool_linkset(phy_data->media, caps, 465 efx->link_advertising); 466 else 467 phy_data->forced_cap = caps; 468 469 /* Assert that we can map efx -> mcdi loopback modes */ 470 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); 471 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); 472 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); 473 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); 474 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); 475 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); 476 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); 477 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); 478 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); 479 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); 480 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); 481 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); 482 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); 483 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); 484 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); 485 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); 486 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); 487 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); 488 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); 489 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); 490 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); 491 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); 492 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); 493 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); 494 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); 495 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); 496 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); 497 498 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); 499 if (rc != 0) 500 goto fail; 501 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, 502 * but by convention we don't 503 */ 504 efx->loopback_modes &= ~(1 << LOOPBACK_NONE); 505 506 /* Set the initial link mode */ 507 efx_mcdi_phy_decode_link(efx, &efx->link_state, 508 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 509 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 510 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 511 512 /* Record the initial FEC configuration (or nearest approximation 513 * representable in the ethtool configuration space) 514 */ 515 efx->fec_config = mcdi_fec_caps_to_ethtool(caps, 516 efx->link_state.speed == 25000 || 517 efx->link_state.speed == 50000); 518 519 /* Default to Autonegotiated flow control if the PHY supports it */ 520 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; 521 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 522 efx->wanted_fc |= EFX_FC_AUTO; 523 efx_link_set_wanted_fc(efx, efx->wanted_fc); 524 525 return 0; 526 527 fail: 528 kfree(phy_data); 529 return rc; 530 } 531 532 void efx_mcdi_phy_remove(struct efx_nic *efx) 533 { 534 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 535 536 efx->phy_data = NULL; 537 kfree(phy_data); 538 } 539 540 void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, struct ethtool_link_ksettings *cmd) 541 { 542 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 543 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 544 int rc; 545 546 cmd->base.speed = efx->link_state.speed; 547 cmd->base.duplex = efx->link_state.fd; 548 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media); 549 cmd->base.phy_address = phy_cfg->port; 550 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg); 551 cmd->base.mdio_support = (efx->mdio.mode_support & 552 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); 553 554 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap, 555 cmd->link_modes.supported); 556 memcpy(cmd->link_modes.advertising, efx->link_advertising, 557 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK())); 558 559 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 560 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 561 outbuf, sizeof(outbuf), NULL); 562 if (rc) 563 return; 564 mcdi_to_ethtool_linkset(phy_cfg->media, 565 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP), 566 cmd->link_modes.lp_advertising); 567 } 568 569 int efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, const struct ethtool_link_ksettings *cmd) 570 { 571 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 572 u32 caps; 573 int rc; 574 575 if (cmd->base.autoneg) { 576 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) | 577 1 << MC_CMD_PHY_CAP_AN_LBN); 578 } else if (cmd->base.duplex) { 579 switch (cmd->base.speed) { 580 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; 581 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; 582 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; 583 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; 584 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break; 585 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break; 586 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break; 587 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break; 588 default: return -EINVAL; 589 } 590 } else { 591 switch (cmd->base.speed) { 592 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; 593 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; 594 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; 595 default: return -EINVAL; 596 } 597 } 598 599 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, efx->fec_config); 600 601 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 602 efx->loopback_mode, 0); 603 if (rc) 604 return rc; 605 606 if (cmd->base.autoneg) { 607 efx_link_set_advertising(efx, cmd->link_modes.advertising); 608 phy_cfg->forced_cap = 0; 609 } else { 610 efx_link_clear_advertising(efx); 611 phy_cfg->forced_cap = caps; 612 } 613 return 0; 614 } 615 616 int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec) 617 { 618 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_V2_LEN); 619 u32 caps, active, speed; /* MCDI format */ 620 bool is_25g = false; 621 size_t outlen; 622 int rc; 623 624 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 625 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 626 outbuf, sizeof(outbuf), &outlen); 627 if (rc) 628 return rc; 629 if (outlen < MC_CMD_GET_LINK_OUT_V2_LEN) 630 return -EOPNOTSUPP; 631 632 /* behaviour for 25G/50G links depends on 25G BASER bit */ 633 speed = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_LINK_SPEED); 634 is_25g = speed == 25000 || speed == 50000; 635 636 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_CAP); 637 fec->fec = mcdi_fec_caps_to_ethtool(caps, is_25g); 638 /* BASER is never supported on 100G */ 639 if (speed == 100000) 640 fec->fec &= ~ETHTOOL_FEC_BASER; 641 642 active = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_FEC_TYPE); 643 switch (active) { 644 case MC_CMD_FEC_NONE: 645 fec->active_fec = ETHTOOL_FEC_OFF; 646 break; 647 case MC_CMD_FEC_BASER: 648 fec->active_fec = ETHTOOL_FEC_BASER; 649 break; 650 case MC_CMD_FEC_RS: 651 fec->active_fec = ETHTOOL_FEC_RS; 652 break; 653 default: 654 netif_warn(efx, hw, efx->net_dev, 655 "Firmware reports unrecognised FEC_TYPE %u\n", 656 active); 657 /* We don't know what firmware has picked. AUTO is as good a 658 * "can't happen" value as any other. 659 */ 660 fec->active_fec = ETHTOOL_FEC_AUTO; 661 break; 662 } 663 664 return 0; 665 } 666 667 /* Basic validation to ensure that the caps we are going to attempt to set are 668 * in fact supported by the adapter. Note that 'no FEC' is always supported. 669 */ 670 static int ethtool_fec_supported(u32 supported_cap, u32 ethtool_cap) 671 { 672 if (ethtool_cap & ETHTOOL_FEC_OFF) 673 return 0; 674 675 if (ethtool_cap && 676 !ethtool_fec_caps_to_mcdi(supported_cap, ethtool_cap)) 677 return -EINVAL; 678 return 0; 679 } 680 681 int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, const struct ethtool_fecparam *fec) 682 { 683 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 684 u32 caps; 685 int rc; 686 687 rc = ethtool_fec_supported(phy_cfg->supported_cap, fec->fec); 688 if (rc) 689 return rc; 690 691 /* Work out what efx_mcdi_phy_set_link_ksettings() would produce from 692 * saved advertising bits 693 */ 694 if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising)) 695 caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) | 696 1 << MC_CMD_PHY_CAP_AN_LBN); 697 else 698 caps = phy_cfg->forced_cap; 699 700 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, fec->fec); 701 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 702 efx->loopback_mode, 0); 703 if (rc) 704 return rc; 705 706 /* Record the new FEC setting for subsequent set_link calls */ 707 efx->fec_config = fec->fec; 708 return 0; 709 } 710 711 int efx_mcdi_phy_test_alive(struct efx_nic *efx) 712 { 713 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN); 714 size_t outlen; 715 int rc; 716 717 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); 718 719 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, 720 outbuf, sizeof(outbuf), &outlen); 721 if (rc) 722 return rc; 723 724 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) 725 return -EIO; 726 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) 727 return -EINVAL; 728 729 return 0; 730 } 731 732 int efx_mcdi_port_reconfigure(struct efx_nic *efx) 733 { 734 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 735 u32 caps = (efx->link_advertising[0] ? 736 ethtool_linkset_to_mcdi_cap(efx->link_advertising) : 737 phy_cfg->forced_cap); 738 739 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, efx->fec_config); 740 741 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 742 efx->loopback_mode, 0); 743 } 744 745 static const char *const mcdi_sft9001_cable_diag_names[] = { 746 "cable.pairA.length", 747 "cable.pairB.length", 748 "cable.pairC.length", 749 "cable.pairD.length", 750 "cable.pairA.status", 751 "cable.pairB.status", 752 "cable.pairC.status", 753 "cable.pairD.status", 754 }; 755 756 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, 757 int *results) 758 { 759 unsigned int retry, i, count = 0; 760 size_t outlen; 761 u32 status; 762 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN); 763 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN); 764 u8 *ptr; 765 int rc; 766 767 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); 768 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode); 769 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, 770 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL); 771 if (rc) 772 goto out; 773 774 /* Wait up to 10s for BIST to finish */ 775 for (retry = 0; retry < 100; ++retry) { 776 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); 777 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, 778 outbuf, sizeof(outbuf), &outlen); 779 if (rc) 780 goto out; 781 782 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT); 783 if (status != MC_CMD_POLL_BIST_RUNNING) 784 goto finished; 785 786 msleep(100); 787 } 788 789 rc = -ETIMEDOUT; 790 goto out; 791 792 finished: 793 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; 794 795 /* SFT9001 specific cable diagnostics output */ 796 if (efx->phy_type == PHY_TYPE_SFT9001B && 797 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || 798 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { 799 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); 800 if (status == MC_CMD_POLL_BIST_PASSED && 801 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { 802 for (i = 0; i < 8; i++) { 803 results[count + i] = 804 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], 805 EFX_DWORD_0); 806 } 807 } 808 count += 8; 809 } 810 rc = count; 811 812 out: 813 return rc; 814 } 815 816 int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, unsigned int flags) 817 { 818 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 819 u32 mode; 820 int rc; 821 822 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 823 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); 824 if (rc < 0) 825 return rc; 826 827 results += rc; 828 } 829 830 /* If we support both LONG and SHORT, then run each in response to 831 * break or not. Otherwise, run the one we support 832 */ 833 mode = 0; 834 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { 835 if ((flags & ETH_TEST_FL_OFFLINE) && 836 (phy_cfg->flags & 837 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) 838 mode = MC_CMD_PHY_BIST_CABLE_LONG; 839 else 840 mode = MC_CMD_PHY_BIST_CABLE_SHORT; 841 } else if (phy_cfg->flags & 842 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) 843 mode = MC_CMD_PHY_BIST_CABLE_LONG; 844 845 if (mode != 0) { 846 rc = efx_mcdi_bist(efx, mode, results); 847 if (rc < 0) 848 return rc; 849 results += rc; 850 } 851 852 return 0; 853 } 854 855 const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index) 856 { 857 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 858 859 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 860 if (index == 0) 861 return "bist"; 862 --index; 863 } 864 865 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | 866 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { 867 if (index == 0) 868 return "cable"; 869 --index; 870 871 if (efx->phy_type == PHY_TYPE_SFT9001B) { 872 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) 873 return mcdi_sft9001_cable_diag_names[index]; 874 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); 875 } 876 } 877 878 return NULL; 879 } 880 881 #define SFP_PAGE_SIZE 128 882 #define SFF_DIAG_TYPE_OFFSET 92 883 #define SFF_DIAG_ADDR_CHANGE BIT(2) 884 #define SFF_8079_NUM_PAGES 2 885 #define SFF_8472_NUM_PAGES 4 886 #define SFF_8436_NUM_PAGES 5 887 #define SFF_DMT_LEVEL_OFFSET 94 888 889 /** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom 890 * @efx: NIC context 891 * @page: EEPROM page number 892 * @data: Destination data pointer 893 * @offset: Offset in page to copy from in to data 894 * @space: Space available in data 895 * 896 * Return: 897 * >=0 - amount of data copied 898 * <0 - error 899 */ 900 static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx, 901 unsigned int page, 902 u8 *data, ssize_t offset, 903 ssize_t space) 904 { 905 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX); 906 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN); 907 unsigned int payload_len; 908 unsigned int to_copy; 909 size_t outlen; 910 int rc; 911 912 if (offset > SFP_PAGE_SIZE) 913 return -EINVAL; 914 915 to_copy = min(space, SFP_PAGE_SIZE - offset); 916 917 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); 918 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO, 919 inbuf, sizeof(inbuf), 920 outbuf, sizeof(outbuf), 921 &outlen); 922 923 if (rc) 924 return rc; 925 926 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + 927 SFP_PAGE_SIZE)) 928 return -EIO; 929 930 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN); 931 if (payload_len != SFP_PAGE_SIZE) 932 return -EIO; 933 934 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset, 935 to_copy); 936 937 return to_copy; 938 } 939 940 static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx, 941 unsigned int page, 942 u8 byte) 943 { 944 u8 data; 945 int rc; 946 947 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1); 948 if (rc == 1) 949 return data; 950 951 return rc; 952 } 953 954 static int efx_mcdi_phy_diag_type(struct efx_nic *efx) 955 { 956 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */ 957 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 958 SFF_DIAG_TYPE_OFFSET); 959 } 960 961 static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx) 962 { 963 /* Page zero of the EEPROM includes the DMT level at byte 94. */ 964 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 965 SFF_DMT_LEVEL_OFFSET); 966 } 967 968 static u32 efx_mcdi_phy_module_type(struct efx_nic *efx) 969 { 970 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 971 972 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS) 973 return phy_data->media; 974 975 /* A QSFP+ NIC may actually have an SFP+ module attached. 976 * The ID is page 0, byte 0. 977 */ 978 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) { 979 case 0x3: 980 return MC_CMD_MEDIA_SFP_PLUS; 981 case 0xc: 982 case 0xd: 983 return MC_CMD_MEDIA_QSFP_PLUS; 984 default: 985 return 0; 986 } 987 } 988 989 int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, struct ethtool_eeprom *ee, u8 *data) 990 { 991 int rc; 992 ssize_t space_remaining = ee->len; 993 unsigned int page_off; 994 bool ignore_missing; 995 int num_pages; 996 int page; 997 998 switch (efx_mcdi_phy_module_type(efx)) { 999 case MC_CMD_MEDIA_SFP_PLUS: 1000 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ? 1001 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES; 1002 page = 0; 1003 ignore_missing = false; 1004 break; 1005 case MC_CMD_MEDIA_QSFP_PLUS: 1006 num_pages = SFF_8436_NUM_PAGES; 1007 page = -1; /* We obtain the lower page by asking for -1. */ 1008 ignore_missing = true; /* Ignore missing pages after page 0. */ 1009 break; 1010 default: 1011 return -EOPNOTSUPP; 1012 } 1013 1014 page_off = ee->offset % SFP_PAGE_SIZE; 1015 page += ee->offset / SFP_PAGE_SIZE; 1016 1017 while (space_remaining && (page < num_pages)) { 1018 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, 1019 data, page_off, 1020 space_remaining); 1021 1022 if (rc > 0) { 1023 space_remaining -= rc; 1024 data += rc; 1025 page_off = 0; 1026 page++; 1027 } else if (rc == 0) { 1028 space_remaining = 0; 1029 } else if (ignore_missing && (page > 0)) { 1030 int intended_size = SFP_PAGE_SIZE - page_off; 1031 1032 space_remaining -= intended_size; 1033 if (space_remaining < 0) { 1034 space_remaining = 0; 1035 } else { 1036 memset(data, 0, intended_size); 1037 data += intended_size; 1038 page_off = 0; 1039 page++; 1040 rc = 0; 1041 } 1042 } else { 1043 return rc; 1044 } 1045 } 1046 1047 return 0; 1048 } 1049 1050 int efx_mcdi_phy_get_module_info(struct efx_nic *efx, struct ethtool_modinfo *modinfo) 1051 { 1052 int sff_8472_level; 1053 int diag_type; 1054 1055 switch (efx_mcdi_phy_module_type(efx)) { 1056 case MC_CMD_MEDIA_SFP_PLUS: 1057 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx); 1058 1059 /* If we can't read the diagnostics level we have none. */ 1060 if (sff_8472_level < 0) 1061 return -EOPNOTSUPP; 1062 1063 /* Check if this module requires the (unsupported) address 1064 * change operation. 1065 */ 1066 diag_type = efx_mcdi_phy_diag_type(efx); 1067 1068 if (sff_8472_level == 0 || 1069 (diag_type & SFF_DIAG_ADDR_CHANGE)) { 1070 modinfo->type = ETH_MODULE_SFF_8079; 1071 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1072 } else { 1073 modinfo->type = ETH_MODULE_SFF_8472; 1074 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1075 } 1076 break; 1077 1078 case MC_CMD_MEDIA_QSFP_PLUS: 1079 modinfo->type = ETH_MODULE_SFF_8436; 1080 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 1081 break; 1082 1083 default: 1084 return -EOPNOTSUPP; 1085 } 1086 1087 return 0; 1088 } 1089 1090 static unsigned int efx_calc_mac_mtu(struct efx_nic *efx) 1091 { 1092 return EFX_MAX_FRAME_LEN(efx->net_dev->mtu); 1093 } 1094 1095 int efx_mcdi_set_mac(struct efx_nic *efx) 1096 { 1097 u32 fcntl; 1098 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN); 1099 1100 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 1101 1102 /* This has no effect on EF10 */ 1103 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), 1104 efx->net_dev->dev_addr); 1105 1106 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, efx_calc_mac_mtu(efx)); 1107 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); 1108 1109 /* Set simple MAC filter for Siena */ 1110 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT, 1111 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter); 1112 1113 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS, 1114 SET_MAC_IN_FLAG_INCLUDE_FCS, 1115 !!(efx->net_dev->features & NETIF_F_RXFCS)); 1116 1117 switch (efx->wanted_fc) { 1118 case EFX_FC_RX | EFX_FC_TX: 1119 fcntl = MC_CMD_FCNTL_BIDIR; 1120 break; 1121 case EFX_FC_RX: 1122 fcntl = MC_CMD_FCNTL_RESPOND; 1123 break; 1124 default: 1125 fcntl = MC_CMD_FCNTL_OFF; 1126 break; 1127 } 1128 if (efx->wanted_fc & EFX_FC_AUTO) 1129 fcntl = MC_CMD_FCNTL_AUTO; 1130 if (efx->fc_disable) 1131 fcntl = MC_CMD_FCNTL_OFF; 1132 1133 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); 1134 1135 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), 1136 NULL, 0, NULL); 1137 } 1138 1139 int efx_mcdi_set_mtu(struct efx_nic *efx) 1140 { 1141 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_MAC_EXT_IN_LEN); 1142 1143 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 1144 1145 MCDI_SET_DWORD(inbuf, SET_MAC_EXT_IN_MTU, efx_calc_mac_mtu(efx)); 1146 1147 MCDI_POPULATE_DWORD_1(inbuf, SET_MAC_EXT_IN_CONTROL, 1148 SET_MAC_EXT_IN_CFG_MTU, 1); 1149 1150 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, inbuf, sizeof(inbuf), 1151 NULL, 0, NULL); 1152 } 1153 1154 enum efx_stats_action { 1155 EFX_STATS_ENABLE, 1156 EFX_STATS_DISABLE, 1157 EFX_STATS_PULL, 1158 }; 1159 1160 static int efx_mcdi_mac_stats(struct efx_nic *efx, 1161 enum efx_stats_action action, int clear) 1162 { 1163 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); 1164 int rc; 1165 int change = action == EFX_STATS_PULL ? 0 : 1; 1166 int enable = action == EFX_STATS_ENABLE ? 1 : 0; 1167 int period = action == EFX_STATS_ENABLE ? 1000 : 0; 1168 dma_addr_t dma_addr = efx->stats_buffer.dma_addr; 1169 u32 dma_len = action != EFX_STATS_DISABLE ? 1170 efx->num_mac_stats * sizeof(u64) : 0; 1171 1172 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); 1173 1174 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr); 1175 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, 1176 MAC_STATS_IN_DMA, !!enable, 1177 MAC_STATS_IN_CLEAR, clear, 1178 MAC_STATS_IN_PERIODIC_CHANGE, change, 1179 MAC_STATS_IN_PERIODIC_ENABLE, enable, 1180 MAC_STATS_IN_PERIODIC_CLEAR, 0, 1181 MAC_STATS_IN_PERIODIC_NOEVENT, 1, 1182 MAC_STATS_IN_PERIOD_MS, period); 1183 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); 1184 1185 if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) 1186 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, efx->vport_id); 1187 1188 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), 1189 NULL, 0, NULL); 1190 /* Expect ENOENT if DMA queues have not been set up */ 1191 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues))) 1192 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf), 1193 NULL, 0, rc); 1194 return rc; 1195 } 1196 1197 void efx_mcdi_mac_start_stats(struct efx_nic *efx) 1198 { 1199 __le64 *dma_stats = efx->stats_buffer.addr; 1200 1201 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1202 1203 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); 1204 } 1205 1206 void efx_mcdi_mac_stop_stats(struct efx_nic *efx) 1207 { 1208 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); 1209 } 1210 1211 #define EFX_MAC_STATS_WAIT_US 100 1212 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10 1213 1214 void efx_mcdi_mac_pull_stats(struct efx_nic *efx) 1215 { 1216 __le64 *dma_stats = efx->stats_buffer.addr; 1217 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; 1218 1219 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1220 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); 1221 1222 while (dma_stats[efx->num_mac_stats - 1] == 1223 EFX_MC_STATS_GENERATION_INVALID && 1224 attempts-- != 0) 1225 udelay(EFX_MAC_STATS_WAIT_US); 1226 } 1227 1228 int efx_mcdi_mac_init_stats(struct efx_nic *efx) 1229 { 1230 int rc; 1231 1232 if (!efx->num_mac_stats) 1233 return 0; 1234 1235 /* Allocate buffer for stats */ 1236 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, 1237 efx->num_mac_stats * sizeof(u64), GFP_KERNEL); 1238 if (rc) { 1239 netif_warn(efx, probe, efx->net_dev, 1240 "failed to allocate DMA buffer: %d\n", rc); 1241 return rc; 1242 } 1243 1244 netif_dbg(efx, probe, efx->net_dev, 1245 "stats buffer at %llx (virt %p phys %llx)\n", 1246 (u64) efx->stats_buffer.dma_addr, 1247 efx->stats_buffer.addr, 1248 (u64) virt_to_phys(efx->stats_buffer.addr)); 1249 1250 return 0; 1251 } 1252 1253 void efx_mcdi_mac_fini_stats(struct efx_nic *efx) 1254 { 1255 efx_nic_free_buffer(efx, &efx->stats_buffer); 1256 } 1257 1258 /* Get physical port number (EF10 only; on Siena it is same as PF number) */ 1259 int efx_mcdi_port_get_number(struct efx_nic *efx) 1260 { 1261 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN); 1262 int rc; 1263 1264 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0, 1265 outbuf, sizeof(outbuf), NULL); 1266 if (rc) 1267 return rc; 1268 1269 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT); 1270 } 1271 1272 static unsigned int efx_mcdi_event_link_speed[] = { 1273 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, 1274 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, 1275 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, 1276 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000, 1277 [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000, 1278 [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000, 1279 [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000, 1280 }; 1281 1282 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) 1283 { 1284 u32 flags, fcntl, speed, lpa; 1285 1286 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); 1287 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); 1288 speed = efx_mcdi_event_link_speed[speed]; 1289 1290 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); 1291 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); 1292 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); 1293 1294 /* efx->link_state is only modified by efx_mcdi_phy_get_link(), 1295 * which is only run after flushing the event queues. Therefore, it 1296 * is safe to modify the link state outside of the mac_lock here. 1297 */ 1298 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); 1299 1300 efx_mcdi_phy_check_fcntl(efx, lpa); 1301 1302 efx_link_status_changed(efx); 1303 } 1304