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 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 86 int 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; 106 107 fail: 108 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 109 return rc; 110 } 111 112 void 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 } 186 187 u32 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 } 231 232 u32 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 } 259 260 u8 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 } 280 281 void 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 */ 324 u32 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 */ 355 u32 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 */ 374 void 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 } 399 400 bool 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 } 423 424 int 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 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); 452 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) 453 mcdi_to_ethtool_linkset(phy_data->media, caps, 454 efx->link_advertising); 455 else 456 phy_data->forced_cap = caps; 457 458 /* Assert that we can map efx -> mcdi loopback modes */ 459 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); 460 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); 461 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); 462 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); 463 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); 464 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); 465 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); 466 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); 467 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); 468 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); 469 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); 470 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); 471 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); 472 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); 473 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); 474 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); 475 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); 476 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); 477 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); 478 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); 479 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); 480 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); 481 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); 482 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); 483 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); 484 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); 485 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); 486 487 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); 488 if (rc != 0) 489 goto fail; 490 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, 491 * but by convention we don't 492 */ 493 efx->loopback_modes &= ~(1 << LOOPBACK_NONE); 494 495 /* Set the initial link mode */ 496 efx_mcdi_phy_decode_link(efx, &efx->link_state, 497 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 498 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 499 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 500 501 /* Record the initial FEC configuration (or nearest approximation 502 * representable in the ethtool configuration space) 503 */ 504 efx->fec_config = mcdi_fec_caps_to_ethtool(caps, 505 efx->link_state.speed == 25000 || 506 efx->link_state.speed == 50000); 507 508 /* Default to Autonegotiated flow control if the PHY supports it */ 509 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; 510 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 511 efx->wanted_fc |= EFX_FC_AUTO; 512 efx_link_set_wanted_fc(efx, efx->wanted_fc); 513 514 return 0; 515 516 fail: 517 kfree(phy_data); 518 return rc; 519 } 520 521 void efx_mcdi_phy_remove(struct efx_nic *efx) 522 { 523 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 524 525 efx->phy_data = NULL; 526 kfree(phy_data); 527 } 528 529 void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, struct ethtool_link_ksettings *cmd) 530 { 531 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 532 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 533 int rc; 534 535 cmd->base.speed = efx->link_state.speed; 536 cmd->base.duplex = efx->link_state.fd; 537 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media); 538 cmd->base.phy_address = phy_cfg->port; 539 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg); 540 541 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap, 542 cmd->link_modes.supported); 543 memcpy(cmd->link_modes.advertising, efx->link_advertising, 544 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK())); 545 546 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 547 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 548 outbuf, sizeof(outbuf), NULL); 549 if (rc) 550 return; 551 mcdi_to_ethtool_linkset(phy_cfg->media, 552 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP), 553 cmd->link_modes.lp_advertising); 554 } 555 556 int efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, const struct ethtool_link_ksettings *cmd) 557 { 558 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 559 u32 caps; 560 int rc; 561 562 if (cmd->base.autoneg) { 563 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) | 564 1 << MC_CMD_PHY_CAP_AN_LBN); 565 } else if (cmd->base.duplex) { 566 switch (cmd->base.speed) { 567 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; 568 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; 569 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; 570 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; 571 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break; 572 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break; 573 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break; 574 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break; 575 default: return -EINVAL; 576 } 577 } else { 578 switch (cmd->base.speed) { 579 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; 580 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; 581 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; 582 default: return -EINVAL; 583 } 584 } 585 586 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, efx->fec_config); 587 588 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 589 efx->loopback_mode, 0); 590 if (rc) 591 return rc; 592 593 if (cmd->base.autoneg) { 594 efx_link_set_advertising(efx, cmd->link_modes.advertising); 595 phy_cfg->forced_cap = 0; 596 } else { 597 efx_link_clear_advertising(efx); 598 phy_cfg->forced_cap = caps; 599 } 600 return 0; 601 } 602 603 int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec) 604 { 605 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_V2_LEN); 606 u32 caps, active, speed; /* MCDI format */ 607 bool is_25g = false; 608 size_t outlen; 609 int rc; 610 611 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 612 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 613 outbuf, sizeof(outbuf), &outlen); 614 if (rc) 615 return rc; 616 if (outlen < MC_CMD_GET_LINK_OUT_V2_LEN) 617 return -EOPNOTSUPP; 618 619 /* behaviour for 25G/50G links depends on 25G BASER bit */ 620 speed = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_LINK_SPEED); 621 is_25g = speed == 25000 || speed == 50000; 622 623 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_CAP); 624 fec->fec = mcdi_fec_caps_to_ethtool(caps, is_25g); 625 /* BASER is never supported on 100G */ 626 if (speed == 100000) 627 fec->fec &= ~ETHTOOL_FEC_BASER; 628 629 active = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_FEC_TYPE); 630 switch (active) { 631 case MC_CMD_FEC_NONE: 632 fec->active_fec = ETHTOOL_FEC_OFF; 633 break; 634 case MC_CMD_FEC_BASER: 635 fec->active_fec = ETHTOOL_FEC_BASER; 636 break; 637 case MC_CMD_FEC_RS: 638 fec->active_fec = ETHTOOL_FEC_RS; 639 break; 640 default: 641 netif_warn(efx, hw, efx->net_dev, 642 "Firmware reports unrecognised FEC_TYPE %u\n", 643 active); 644 /* We don't know what firmware has picked. AUTO is as good a 645 * "can't happen" value as any other. 646 */ 647 fec->active_fec = ETHTOOL_FEC_AUTO; 648 break; 649 } 650 651 return 0; 652 } 653 654 /* Basic validation to ensure that the caps we are going to attempt to set are 655 * in fact supported by the adapter. Note that 'no FEC' is always supported. 656 */ 657 static int ethtool_fec_supported(u32 supported_cap, u32 ethtool_cap) 658 { 659 if (ethtool_cap & ETHTOOL_FEC_OFF) 660 return 0; 661 662 if (ethtool_cap && 663 !ethtool_fec_caps_to_mcdi(supported_cap, ethtool_cap)) 664 return -EINVAL; 665 return 0; 666 } 667 668 int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, const struct ethtool_fecparam *fec) 669 { 670 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 671 u32 caps; 672 int rc; 673 674 rc = ethtool_fec_supported(phy_cfg->supported_cap, fec->fec); 675 if (rc) 676 return rc; 677 678 /* Work out what efx_mcdi_phy_set_link_ksettings() would produce from 679 * saved advertising bits 680 */ 681 if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising)) 682 caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) | 683 1 << MC_CMD_PHY_CAP_AN_LBN); 684 else 685 caps = phy_cfg->forced_cap; 686 687 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, fec->fec); 688 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 689 efx->loopback_mode, 0); 690 if (rc) 691 return rc; 692 693 /* Record the new FEC setting for subsequent set_link calls */ 694 efx->fec_config = fec->fec; 695 return 0; 696 } 697 698 int efx_mcdi_phy_test_alive(struct efx_nic *efx) 699 { 700 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN); 701 size_t outlen; 702 int rc; 703 704 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); 705 706 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, 707 outbuf, sizeof(outbuf), &outlen); 708 if (rc) 709 return rc; 710 711 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) 712 return -EIO; 713 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) 714 return -EINVAL; 715 716 return 0; 717 } 718 719 int efx_mcdi_port_reconfigure(struct efx_nic *efx) 720 { 721 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 722 u32 caps = (efx->link_advertising[0] ? 723 ethtool_linkset_to_mcdi_cap(efx->link_advertising) : 724 phy_cfg->forced_cap); 725 726 caps |= ethtool_fec_caps_to_mcdi(phy_cfg->supported_cap, efx->fec_config); 727 728 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 729 efx->loopback_mode, 0); 730 } 731 732 static const char *const mcdi_sft9001_cable_diag_names[] = { 733 "cable.pairA.length", 734 "cable.pairB.length", 735 "cable.pairC.length", 736 "cable.pairD.length", 737 "cable.pairA.status", 738 "cable.pairB.status", 739 "cable.pairC.status", 740 "cable.pairD.status", 741 }; 742 743 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, 744 int *results) 745 { 746 unsigned int retry, i, count = 0; 747 size_t outlen; 748 u32 status; 749 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN); 750 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN); 751 u8 *ptr; 752 int rc; 753 754 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); 755 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode); 756 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, 757 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL); 758 if (rc) 759 goto out; 760 761 /* Wait up to 10s for BIST to finish */ 762 for (retry = 0; retry < 100; ++retry) { 763 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); 764 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, 765 outbuf, sizeof(outbuf), &outlen); 766 if (rc) 767 goto out; 768 769 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT); 770 if (status != MC_CMD_POLL_BIST_RUNNING) 771 goto finished; 772 773 msleep(100); 774 } 775 776 rc = -ETIMEDOUT; 777 goto out; 778 779 finished: 780 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; 781 782 /* SFT9001 specific cable diagnostics output */ 783 if (efx->phy_type == PHY_TYPE_SFT9001B && 784 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || 785 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { 786 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); 787 if (status == MC_CMD_POLL_BIST_PASSED && 788 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { 789 for (i = 0; i < 8; i++) { 790 results[count + i] = 791 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], 792 EFX_DWORD_0); 793 } 794 } 795 count += 8; 796 } 797 rc = count; 798 799 out: 800 return rc; 801 } 802 803 int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, unsigned int flags) 804 { 805 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 806 u32 mode; 807 int rc; 808 809 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 810 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); 811 if (rc < 0) 812 return rc; 813 814 results += rc; 815 } 816 817 /* If we support both LONG and SHORT, then run each in response to 818 * break or not. Otherwise, run the one we support 819 */ 820 mode = 0; 821 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { 822 if ((flags & ETH_TEST_FL_OFFLINE) && 823 (phy_cfg->flags & 824 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) 825 mode = MC_CMD_PHY_BIST_CABLE_LONG; 826 else 827 mode = MC_CMD_PHY_BIST_CABLE_SHORT; 828 } else if (phy_cfg->flags & 829 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) 830 mode = MC_CMD_PHY_BIST_CABLE_LONG; 831 832 if (mode != 0) { 833 rc = efx_mcdi_bist(efx, mode, results); 834 if (rc < 0) 835 return rc; 836 results += rc; 837 } 838 839 return 0; 840 } 841 842 const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index) 843 { 844 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 845 846 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 847 if (index == 0) 848 return "bist"; 849 --index; 850 } 851 852 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | 853 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { 854 if (index == 0) 855 return "cable"; 856 --index; 857 858 if (efx->phy_type == PHY_TYPE_SFT9001B) { 859 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) 860 return mcdi_sft9001_cable_diag_names[index]; 861 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); 862 } 863 } 864 865 return NULL; 866 } 867 868 #define SFP_PAGE_SIZE 128 869 #define SFF_DIAG_TYPE_OFFSET 92 870 #define SFF_DIAG_ADDR_CHANGE BIT(2) 871 #define SFF_8079_NUM_PAGES 2 872 #define SFF_8472_NUM_PAGES 4 873 #define SFF_8436_NUM_PAGES 5 874 #define SFF_DMT_LEVEL_OFFSET 94 875 876 /** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom 877 * @efx: NIC context 878 * @page: EEPROM page number 879 * @data: Destination data pointer 880 * @offset: Offset in page to copy from in to data 881 * @space: Space available in data 882 * 883 * Return: 884 * >=0 - amount of data copied 885 * <0 - error 886 */ 887 static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx, 888 unsigned int page, 889 u8 *data, ssize_t offset, 890 ssize_t space) 891 { 892 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX); 893 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN); 894 unsigned int payload_len; 895 unsigned int to_copy; 896 size_t outlen; 897 int rc; 898 899 if (offset > SFP_PAGE_SIZE) 900 return -EINVAL; 901 902 to_copy = min(space, SFP_PAGE_SIZE - offset); 903 904 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); 905 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO, 906 inbuf, sizeof(inbuf), 907 outbuf, sizeof(outbuf), 908 &outlen); 909 910 if (rc) 911 return rc; 912 913 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + 914 SFP_PAGE_SIZE)) 915 return -EIO; 916 917 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN); 918 if (payload_len != SFP_PAGE_SIZE) 919 return -EIO; 920 921 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset, 922 to_copy); 923 924 return to_copy; 925 } 926 927 static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx, 928 unsigned int page, 929 u8 byte) 930 { 931 u8 data; 932 int rc; 933 934 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1); 935 if (rc == 1) 936 return data; 937 938 return rc; 939 } 940 941 static int efx_mcdi_phy_diag_type(struct efx_nic *efx) 942 { 943 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */ 944 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 945 SFF_DIAG_TYPE_OFFSET); 946 } 947 948 static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx) 949 { 950 /* Page zero of the EEPROM includes the DMT level at byte 94. */ 951 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 952 SFF_DMT_LEVEL_OFFSET); 953 } 954 955 static u32 efx_mcdi_phy_module_type(struct efx_nic *efx) 956 { 957 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 958 959 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS) 960 return phy_data->media; 961 962 /* A QSFP+ NIC may actually have an SFP+ module attached. 963 * The ID is page 0, byte 0. 964 * QSFP28 is of type SFF_8636, however, this is treated 965 * the same by ethtool, so we can also treat them the same. 966 */ 967 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) { 968 case 0x3: /* SFP */ 969 return MC_CMD_MEDIA_SFP_PLUS; 970 case 0xc: /* QSFP */ 971 case 0xd: /* QSFP+ */ 972 case 0x11: /* QSFP28 */ 973 return MC_CMD_MEDIA_QSFP_PLUS; 974 default: 975 return 0; 976 } 977 } 978 979 int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, struct ethtool_eeprom *ee, u8 *data) 980 { 981 int rc; 982 ssize_t space_remaining = ee->len; 983 unsigned int page_off; 984 bool ignore_missing; 985 int num_pages; 986 int page; 987 988 switch (efx_mcdi_phy_module_type(efx)) { 989 case MC_CMD_MEDIA_SFP_PLUS: 990 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ? 991 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES; 992 page = 0; 993 ignore_missing = false; 994 break; 995 case MC_CMD_MEDIA_QSFP_PLUS: 996 num_pages = SFF_8436_NUM_PAGES; 997 page = -1; /* We obtain the lower page by asking for -1. */ 998 ignore_missing = true; /* Ignore missing pages after page 0. */ 999 break; 1000 default: 1001 return -EOPNOTSUPP; 1002 } 1003 1004 page_off = ee->offset % SFP_PAGE_SIZE; 1005 page += ee->offset / SFP_PAGE_SIZE; 1006 1007 while (space_remaining && (page < num_pages)) { 1008 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, 1009 data, page_off, 1010 space_remaining); 1011 1012 if (rc > 0) { 1013 space_remaining -= rc; 1014 data += rc; 1015 page_off = 0; 1016 page++; 1017 } else if (rc == 0) { 1018 space_remaining = 0; 1019 } else if (ignore_missing && (page > 0)) { 1020 int intended_size = SFP_PAGE_SIZE - page_off; 1021 1022 space_remaining -= intended_size; 1023 if (space_remaining < 0) { 1024 space_remaining = 0; 1025 } else { 1026 memset(data, 0, intended_size); 1027 data += intended_size; 1028 page_off = 0; 1029 page++; 1030 rc = 0; 1031 } 1032 } else { 1033 return rc; 1034 } 1035 } 1036 1037 return 0; 1038 } 1039 1040 int efx_mcdi_phy_get_module_info(struct efx_nic *efx, struct ethtool_modinfo *modinfo) 1041 { 1042 int sff_8472_level; 1043 int diag_type; 1044 1045 switch (efx_mcdi_phy_module_type(efx)) { 1046 case MC_CMD_MEDIA_SFP_PLUS: 1047 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx); 1048 1049 /* If we can't read the diagnostics level we have none. */ 1050 if (sff_8472_level < 0) 1051 return -EOPNOTSUPP; 1052 1053 /* Check if this module requires the (unsupported) address 1054 * change operation. 1055 */ 1056 diag_type = efx_mcdi_phy_diag_type(efx); 1057 1058 if (sff_8472_level == 0 || 1059 (diag_type & SFF_DIAG_ADDR_CHANGE)) { 1060 modinfo->type = ETH_MODULE_SFF_8079; 1061 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1062 } else { 1063 modinfo->type = ETH_MODULE_SFF_8472; 1064 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1065 } 1066 break; 1067 1068 case MC_CMD_MEDIA_QSFP_PLUS: 1069 modinfo->type = ETH_MODULE_SFF_8436; 1070 modinfo->eeprom_len = ETH_MODULE_SFF_8436_MAX_LEN; 1071 break; 1072 1073 default: 1074 return -EOPNOTSUPP; 1075 } 1076 1077 return 0; 1078 } 1079 1080 static unsigned int efx_calc_mac_mtu(struct efx_nic *efx) 1081 { 1082 return EFX_MAX_FRAME_LEN(efx->net_dev->mtu); 1083 } 1084 1085 int efx_mcdi_set_mac(struct efx_nic *efx) 1086 { 1087 u32 fcntl; 1088 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN); 1089 1090 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 1091 1092 /* This has no effect on EF10 */ 1093 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), 1094 efx->net_dev->dev_addr); 1095 1096 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, efx_calc_mac_mtu(efx)); 1097 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); 1098 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS, 1099 SET_MAC_IN_FLAG_INCLUDE_FCS, 1100 !!(efx->net_dev->features & NETIF_F_RXFCS)); 1101 1102 switch (efx->wanted_fc) { 1103 case EFX_FC_RX | EFX_FC_TX: 1104 fcntl = MC_CMD_FCNTL_BIDIR; 1105 break; 1106 case EFX_FC_RX: 1107 fcntl = MC_CMD_FCNTL_RESPOND; 1108 break; 1109 default: 1110 fcntl = MC_CMD_FCNTL_OFF; 1111 break; 1112 } 1113 if (efx->wanted_fc & EFX_FC_AUTO) 1114 fcntl = MC_CMD_FCNTL_AUTO; 1115 if (efx->fc_disable) 1116 fcntl = MC_CMD_FCNTL_OFF; 1117 1118 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); 1119 1120 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), 1121 NULL, 0, NULL); 1122 } 1123 1124 int efx_mcdi_set_mtu(struct efx_nic *efx) 1125 { 1126 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_MAC_EXT_IN_LEN); 1127 1128 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 1129 1130 MCDI_SET_DWORD(inbuf, SET_MAC_EXT_IN_MTU, efx_calc_mac_mtu(efx)); 1131 1132 MCDI_POPULATE_DWORD_1(inbuf, SET_MAC_EXT_IN_CONTROL, 1133 SET_MAC_EXT_IN_CFG_MTU, 1); 1134 1135 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, inbuf, sizeof(inbuf), 1136 NULL, 0, NULL); 1137 } 1138 1139 enum efx_stats_action { 1140 EFX_STATS_ENABLE, 1141 EFX_STATS_DISABLE, 1142 EFX_STATS_PULL, 1143 }; 1144 1145 static int efx_mcdi_mac_stats(struct efx_nic *efx, 1146 enum efx_stats_action action, int clear) 1147 { 1148 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); 1149 int rc; 1150 int change = action == EFX_STATS_PULL ? 0 : 1; 1151 int enable = action == EFX_STATS_ENABLE ? 1 : 0; 1152 int period = action == EFX_STATS_ENABLE ? 1000 : 0; 1153 dma_addr_t dma_addr = efx->stats_buffer.dma_addr; 1154 u32 dma_len = action != EFX_STATS_DISABLE ? 1155 efx->num_mac_stats * sizeof(u64) : 0; 1156 1157 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); 1158 1159 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr); 1160 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, 1161 MAC_STATS_IN_DMA, !!enable, 1162 MAC_STATS_IN_CLEAR, clear, 1163 MAC_STATS_IN_PERIODIC_CHANGE, change, 1164 MAC_STATS_IN_PERIODIC_ENABLE, enable, 1165 MAC_STATS_IN_PERIODIC_CLEAR, 0, 1166 MAC_STATS_IN_PERIODIC_NOEVENT, 1, 1167 MAC_STATS_IN_PERIOD_MS, period); 1168 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); 1169 1170 if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) 1171 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, efx->vport_id); 1172 1173 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), 1174 NULL, 0, NULL); 1175 /* Expect ENOENT if DMA queues have not been set up */ 1176 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues))) 1177 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf), 1178 NULL, 0, rc); 1179 return rc; 1180 } 1181 1182 void efx_mcdi_mac_start_stats(struct efx_nic *efx) 1183 { 1184 __le64 *dma_stats = efx->stats_buffer.addr; 1185 1186 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1187 1188 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); 1189 } 1190 1191 void efx_mcdi_mac_stop_stats(struct efx_nic *efx) 1192 { 1193 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); 1194 } 1195 1196 #define EFX_MAC_STATS_WAIT_US 100 1197 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10 1198 1199 void efx_mcdi_mac_pull_stats(struct efx_nic *efx) 1200 { 1201 __le64 *dma_stats = efx->stats_buffer.addr; 1202 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; 1203 1204 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1205 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); 1206 1207 while (dma_stats[efx->num_mac_stats - 1] == 1208 EFX_MC_STATS_GENERATION_INVALID && 1209 attempts-- != 0) 1210 udelay(EFX_MAC_STATS_WAIT_US); 1211 } 1212 1213 int efx_mcdi_mac_init_stats(struct efx_nic *efx) 1214 { 1215 int rc; 1216 1217 if (!efx->num_mac_stats) 1218 return 0; 1219 1220 /* Allocate buffer for stats */ 1221 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, 1222 efx->num_mac_stats * sizeof(u64), GFP_KERNEL); 1223 if (rc) { 1224 netif_warn(efx, probe, efx->net_dev, 1225 "failed to allocate DMA buffer: %d\n", rc); 1226 return rc; 1227 } 1228 1229 netif_dbg(efx, probe, efx->net_dev, 1230 "stats buffer at %llx (virt %p phys %llx)\n", 1231 (u64) efx->stats_buffer.dma_addr, 1232 efx->stats_buffer.addr, 1233 (u64) virt_to_phys(efx->stats_buffer.addr)); 1234 1235 return 0; 1236 } 1237 1238 void efx_mcdi_mac_fini_stats(struct efx_nic *efx) 1239 { 1240 efx_nic_free_buffer(efx, &efx->stats_buffer); 1241 } 1242 1243 /* Get physical port number (EF10 only; on Siena it is same as PF number) */ 1244 int efx_mcdi_port_get_number(struct efx_nic *efx) 1245 { 1246 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN); 1247 int rc; 1248 1249 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0, 1250 outbuf, sizeof(outbuf), NULL); 1251 if (rc) 1252 return rc; 1253 1254 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT); 1255 } 1256 1257 static unsigned int efx_mcdi_event_link_speed[] = { 1258 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, 1259 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, 1260 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, 1261 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000, 1262 [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000, 1263 [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000, 1264 [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000, 1265 }; 1266 1267 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) 1268 { 1269 u32 flags, fcntl, speed, lpa; 1270 1271 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); 1272 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); 1273 speed = efx_mcdi_event_link_speed[speed]; 1274 1275 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); 1276 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); 1277 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); 1278 1279 /* efx->link_state is only modified by efx_mcdi_phy_get_link(), 1280 * which is only run after flushing the event queues. Therefore, it 1281 * is safe to modify the link state outside of the mac_lock here. 1282 */ 1283 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); 1284 1285 efx_mcdi_phy_check_fcntl(efx, lpa); 1286 1287 efx_link_status_changed(efx); 1288 } 1289