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