1/**************************************************************************** 2 * Driver for Solarflare Solarstorm network controllers and boards 3 * Copyright 2009 Solarflare Communications Inc. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published 7 * by the Free Software Foundation, incorporated herein by reference. 8 */ 9 10/* 11 * Driver for PHY related operations via MCDI. 12 */ 13 14#include <linux/slab.h> 15#include "efx.h" 16#include "phy.h" 17#include "mcdi.h" 18#include "mcdi_pcol.h" 19#include "mdio_10g.h" 20#include "nic.h" 21#include "selftest.h" 22 23struct efx_mcdi_phy_data { 24 u32 flags; 25 u32 type; 26 u32 supported_cap; 27 u32 channel; 28 u32 port; 29 u32 stats_mask; 30 u8 name[20]; 31 u32 media; 32 u32 mmd_mask; 33 u8 revision[20]; 34 u32 forced_cap; 35}; 36 37static int 38efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg) 39{ 40 u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN]; 41 size_t outlen; 42 int rc; 43 44 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0); 45 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name)); 46 47 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0, 48 outbuf, sizeof(outbuf), &outlen); 49 if (rc) 50 goto fail; 51 52 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) { 53 rc = -EIO; 54 goto fail; 55 } 56 57 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS); 58 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE); 59 cfg->supported_cap = 60 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP); 61 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL); 62 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT); 63 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK); 64 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME), 65 sizeof(cfg->name)); 66 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE); 67 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK); 68 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION), 69 sizeof(cfg->revision)); 70 71 return 0; 72 73fail: 74 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 75 return rc; 76} 77 78static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities, 79 u32 flags, u32 loopback_mode, 80 u32 loopback_speed) 81{ 82 u8 inbuf[MC_CMD_SET_LINK_IN_LEN]; 83 int rc; 84 85 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); 86 87 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); 88 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); 89 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); 90 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); 91 92 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), 93 NULL, 0, NULL); 94 if (rc) 95 goto fail; 96 97 return 0; 98 99fail: 100 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 101 return rc; 102} 103 104static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) 105{ 106 u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN]; 107 size_t outlen; 108 int rc; 109 110 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, 111 outbuf, sizeof(outbuf), &outlen); 112 if (rc) 113 goto fail; 114 115 if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) { 116 rc = -EIO; 117 goto fail; 118 } 119 120 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_SUGGESTED); 121 122 return 0; 123 124fail: 125 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 126 return rc; 127} 128 129int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus, 130 unsigned int prtad, unsigned int devad, u16 addr, 131 u16 *value_out, u32 *status_out) 132{ 133 u8 inbuf[MC_CMD_MDIO_READ_IN_LEN]; 134 u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN]; 135 size_t outlen; 136 int rc; 137 138 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, bus); 139 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad); 140 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad); 141 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr); 142 143 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf), 144 outbuf, sizeof(outbuf), &outlen); 145 if (rc) 146 goto fail; 147 148 *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); 149 *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS); 150 return 0; 151 152fail: 153 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 154 return rc; 155} 156 157int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus, 158 unsigned int prtad, unsigned int devad, u16 addr, 159 u16 value, u32 *status_out) 160{ 161 u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN]; 162 u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN]; 163 size_t outlen; 164 int rc; 165 166 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, bus); 167 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad); 168 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad); 169 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr); 170 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value); 171 172 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf), 173 outbuf, sizeof(outbuf), &outlen); 174 if (rc) 175 goto fail; 176 177 *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS); 178 return 0; 179 180fail: 181 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 182 return rc; 183} 184 185static u32 mcdi_to_ethtool_cap(u32 media, u32 cap) 186{ 187 u32 result = 0; 188 189 switch (media) { 190 case MC_CMD_MEDIA_KX4: 191 result |= SUPPORTED_Backplane; 192 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 193 result |= SUPPORTED_1000baseKX_Full; 194 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 195 result |= SUPPORTED_10000baseKX4_Full; 196 break; 197 198 case MC_CMD_MEDIA_XFP: 199 case MC_CMD_MEDIA_SFP_PLUS: 200 result |= SUPPORTED_FIBRE; 201 break; 202 203 case MC_CMD_MEDIA_BASE_T: 204 result |= SUPPORTED_TP; 205 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) 206 result |= SUPPORTED_10baseT_Half; 207 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) 208 result |= SUPPORTED_10baseT_Full; 209 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) 210 result |= SUPPORTED_100baseT_Half; 211 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) 212 result |= SUPPORTED_100baseT_Full; 213 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) 214 result |= SUPPORTED_1000baseT_Half; 215 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 216 result |= SUPPORTED_1000baseT_Full; 217 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 218 result |= SUPPORTED_10000baseT_Full; 219 break; 220 } 221 222 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 223 result |= SUPPORTED_Pause; 224 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 225 result |= SUPPORTED_Asym_Pause; 226 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 227 result |= SUPPORTED_Autoneg; 228 229 return result; 230} 231 232static u32 ethtool_to_mcdi_cap(u32 cap) 233{ 234 u32 result = 0; 235 236 if (cap & SUPPORTED_10baseT_Half) 237 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); 238 if (cap & SUPPORTED_10baseT_Full) 239 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); 240 if (cap & SUPPORTED_100baseT_Half) 241 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); 242 if (cap & SUPPORTED_100baseT_Full) 243 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); 244 if (cap & SUPPORTED_1000baseT_Half) 245 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); 246 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full)) 247 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); 248 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full)) 249 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); 250 if (cap & SUPPORTED_Pause) 251 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); 252 if (cap & SUPPORTED_Asym_Pause) 253 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); 254 if (cap & SUPPORTED_Autoneg) 255 result |= (1 << MC_CMD_PHY_CAP_AN_LBN); 256 257 return result; 258} 259 260static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) 261{ 262 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 263 enum efx_phy_mode mode, supported; 264 u32 flags; 265 266 /* TODO: Advertise the capabilities supported by this PHY */ 267 supported = 0; 268 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_TXDIS_LBN)) 269 supported |= PHY_MODE_TX_DISABLED; 270 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_LOWPOWER_LBN)) 271 supported |= PHY_MODE_LOW_POWER; 272 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_POWEROFF_LBN)) 273 supported |= PHY_MODE_OFF; 274 275 mode = efx->phy_mode & supported; 276 277 flags = 0; 278 if (mode & PHY_MODE_TX_DISABLED) 279 flags |= (1 << MC_CMD_SET_LINK_TXDIS_LBN); 280 if (mode & PHY_MODE_LOW_POWER) 281 flags |= (1 << MC_CMD_SET_LINK_LOWPOWER_LBN); 282 if (mode & PHY_MODE_OFF) 283 flags |= (1 << MC_CMD_SET_LINK_POWEROFF_LBN); 284 285 return flags; 286} 287 288static u32 mcdi_to_ethtool_media(u32 media) 289{ 290 switch (media) { 291 case MC_CMD_MEDIA_XAUI: 292 case MC_CMD_MEDIA_CX4: 293 case MC_CMD_MEDIA_KX4: 294 return PORT_OTHER; 295 296 case MC_CMD_MEDIA_XFP: 297 case MC_CMD_MEDIA_SFP_PLUS: 298 return PORT_FIBRE; 299 300 case MC_CMD_MEDIA_BASE_T: 301 return PORT_TP; 302 303 default: 304 return PORT_OTHER; 305 } 306} 307 308static int efx_mcdi_phy_probe(struct efx_nic *efx) 309{ 310 struct efx_mcdi_phy_data *phy_data; 311 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; 312 u32 caps; 313 int rc; 314 315 /* Initialise and populate phy_data */ 316 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); 317 if (phy_data == NULL) 318 return -ENOMEM; 319 320 rc = efx_mcdi_get_phy_cfg(efx, phy_data); 321 if (rc != 0) 322 goto fail; 323 324 /* Read initial link advertisement */ 325 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 326 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 327 outbuf, sizeof(outbuf), NULL); 328 if (rc) 329 goto fail; 330 331 /* Fill out nic state */ 332 efx->phy_data = phy_data; 333 efx->phy_type = phy_data->type; 334 335 efx->mdio_bus = phy_data->channel; 336 efx->mdio.prtad = phy_data->port; 337 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); 338 efx->mdio.mode_support = 0; 339 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) 340 efx->mdio.mode_support |= MDIO_SUPPORTS_C22; 341 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) 342 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 343 344 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); 345 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) 346 efx->link_advertising = 347 mcdi_to_ethtool_cap(phy_data->media, caps); 348 else 349 phy_data->forced_cap = caps; 350 351 /* Assert that we can map efx -> mcdi loopback modes */ 352 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); 353 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); 354 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); 355 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); 356 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); 357 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); 358 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); 359 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); 360 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); 361 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); 362 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); 363 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); 364 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); 365 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); 366 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); 367 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); 368 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); 369 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); 370 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); 371 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); 372 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); 373 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); 374 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); 375 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); 376 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); 377 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); 378 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); 379 380 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); 381 if (rc != 0) 382 goto fail; 383 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, 384 * but by convention we don't */ 385 efx->loopback_modes &= ~(1 << LOOPBACK_NONE); 386 387 /* Set the initial link mode */ 388 efx_mcdi_phy_decode_link( 389 efx, &efx->link_state, 390 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 391 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 392 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 393 394 /* Default to Autonegotiated flow control if the PHY supports it */ 395 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; 396 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 397 efx->wanted_fc |= EFX_FC_AUTO; 398 efx_link_set_wanted_fc(efx, efx->wanted_fc); 399 400 return 0; 401 402fail: 403 kfree(phy_data); 404 return rc; 405} 406 407int efx_mcdi_phy_reconfigure(struct efx_nic *efx) 408{ 409 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 410 u32 caps = (efx->link_advertising ? 411 ethtool_to_mcdi_cap(efx->link_advertising) : 412 phy_cfg->forced_cap); 413 414 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 415 efx->loopback_mode, 0); 416} 417 418void efx_mcdi_phy_decode_link(struct efx_nic *efx, 419 struct efx_link_state *link_state, 420 u32 speed, u32 flags, u32 fcntl) 421{ 422 switch (fcntl) { 423 case MC_CMD_FCNTL_AUTO: 424 WARN_ON(1); /* This is not a link mode */ 425 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; 426 break; 427 case MC_CMD_FCNTL_BIDIR: 428 link_state->fc = EFX_FC_TX | EFX_FC_RX; 429 break; 430 case MC_CMD_FCNTL_RESPOND: 431 link_state->fc = EFX_FC_RX; 432 break; 433 default: 434 WARN_ON(1); 435 case MC_CMD_FCNTL_OFF: 436 link_state->fc = 0; 437 break; 438 } 439 440 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_LINK_UP_LBN)); 441 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_FULL_DUPLEX_LBN)); 442 link_state->speed = speed; 443} 444 445/* Verify that the forced flow control settings (!EFX_FC_AUTO) are 446 * supported by the link partner. Warn the user if this isn't the case 447 */ 448void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) 449{ 450 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 451 u32 rmtadv; 452 453 /* The link partner capabilities are only relevent if the 454 * link supports flow control autonegotiation */ 455 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 456 return; 457 458 /* If flow control autoneg is supported and enabled, then fine */ 459 if (efx->wanted_fc & EFX_FC_AUTO) 460 return; 461 462 rmtadv = 0; 463 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 464 rmtadv |= ADVERTISED_Pause; 465 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 466 rmtadv |= ADVERTISED_Asym_Pause; 467 468 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) 469 netif_err(efx, link, efx->net_dev, 470 "warning: link partner doesn't support pause frames"); 471} 472 473static bool efx_mcdi_phy_poll(struct efx_nic *efx) 474{ 475 struct efx_link_state old_state = efx->link_state; 476 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; 477 int rc; 478 479 WARN_ON(!mutex_is_locked(&efx->mac_lock)); 480 481 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 482 483 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 484 outbuf, sizeof(outbuf), NULL); 485 if (rc) { 486 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", 487 __func__, rc); 488 efx->link_state.up = false; 489 } else { 490 efx_mcdi_phy_decode_link( 491 efx, &efx->link_state, 492 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 493 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 494 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 495 } 496 497 return !efx_link_state_equal(&efx->link_state, &old_state); 498} 499 500static void efx_mcdi_phy_remove(struct efx_nic *efx) 501{ 502 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 503 504 efx->phy_data = NULL; 505 kfree(phy_data); 506} 507 508static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) 509{ 510 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 511 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; 512 int rc; 513 514 ecmd->supported = 515 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap); 516 ecmd->advertising = efx->link_advertising; 517 ecmd->speed = efx->link_state.speed; 518 ecmd->duplex = efx->link_state.fd; 519 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media); 520 ecmd->phy_address = phy_cfg->port; 521 ecmd->transceiver = XCVR_INTERNAL; 522 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg); 523 ecmd->mdio_support = (efx->mdio.mode_support & 524 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); 525 526 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 527 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 528 outbuf, sizeof(outbuf), NULL); 529 if (rc) { 530 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", 531 __func__, rc); 532 return; 533 } 534 ecmd->lp_advertising = 535 mcdi_to_ethtool_cap(phy_cfg->media, 536 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP)); 537} 538 539static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) 540{ 541 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 542 u32 caps; 543 int rc; 544 545 if (ecmd->autoneg) { 546 caps = (ethtool_to_mcdi_cap(ecmd->advertising) | 547 1 << MC_CMD_PHY_CAP_AN_LBN); 548 } else if (ecmd->duplex) { 549 switch (ecmd->speed) { 550 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; 551 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; 552 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; 553 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; 554 default: return -EINVAL; 555 } 556 } else { 557 switch (ecmd->speed) { 558 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; 559 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; 560 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; 561 default: return -EINVAL; 562 } 563 } 564 565 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 566 efx->loopback_mode, 0); 567 if (rc) 568 return rc; 569 570 if (ecmd->autoneg) { 571 efx_link_set_advertising( 572 efx, ecmd->advertising | ADVERTISED_Autoneg); 573 phy_cfg->forced_cap = 0; 574 } else { 575 efx_link_set_advertising(efx, 0); 576 phy_cfg->forced_cap = caps; 577 } 578 return 0; 579} 580 581static int efx_mcdi_phy_test_alive(struct efx_nic *efx) 582{ 583 u8 outbuf[MC_CMD_GET_PHY_STATE_OUT_LEN]; 584 size_t outlen; 585 int rc; 586 587 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); 588 589 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, 590 outbuf, sizeof(outbuf), &outlen); 591 if (rc) 592 return rc; 593 594 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) 595 return -EIO; 596 if (MCDI_DWORD(outbuf, GET_PHY_STATE_STATE) != MC_CMD_PHY_STATE_OK) 597 return -EINVAL; 598 599 return 0; 600} 601 602static const char *const mcdi_sft9001_cable_diag_names[] = { 603 "cable.pairA.length", 604 "cable.pairB.length", 605 "cable.pairC.length", 606 "cable.pairD.length", 607 "cable.pairA.status", 608 "cable.pairB.status", 609 "cable.pairC.status", 610 "cable.pairD.status", 611}; 612 613static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, 614 int *results) 615{ 616 unsigned int retry, i, count = 0; 617 size_t outlen; 618 u32 status; 619 u8 *buf, *ptr; 620 int rc; 621 622 buf = kzalloc(0x100, GFP_KERNEL); 623 if (buf == NULL) 624 return -ENOMEM; 625 626 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); 627 MCDI_SET_DWORD(buf, START_BIST_IN_TYPE, bist_mode); 628 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, buf, MC_CMD_START_BIST_IN_LEN, 629 NULL, 0, NULL); 630 if (rc) 631 goto out; 632 633 /* Wait up to 10s for BIST to finish */ 634 for (retry = 0; retry < 100; ++retry) { 635 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); 636 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, 637 buf, 0x100, &outlen); 638 if (rc) 639 goto out; 640 641 status = MCDI_DWORD(buf, POLL_BIST_OUT_RESULT); 642 if (status != MC_CMD_POLL_BIST_RUNNING) 643 goto finished; 644 645 msleep(100); 646 } 647 648 rc = -ETIMEDOUT; 649 goto out; 650 651finished: 652 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; 653 654 /* SFT9001 specific cable diagnostics output */ 655 if (efx->phy_type == PHY_TYPE_SFT9001B && 656 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || 657 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { 658 ptr = MCDI_PTR(buf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); 659 if (status == MC_CMD_POLL_BIST_PASSED && 660 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { 661 for (i = 0; i < 8; i++) { 662 results[count + i] = 663 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], 664 EFX_DWORD_0); 665 } 666 } 667 count += 8; 668 } 669 rc = count; 670 671out: 672 kfree(buf); 673 674 return rc; 675} 676 677static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, 678 unsigned flags) 679{ 680 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 681 u32 mode; 682 int rc; 683 684 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) { 685 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); 686 if (rc < 0) 687 return rc; 688 689 results += rc; 690 } 691 692 /* If we support both LONG and SHORT, then run each in response to 693 * break or not. Otherwise, run the one we support */ 694 mode = 0; 695 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN)) { 696 if ((flags & ETH_TEST_FL_OFFLINE) && 697 (phy_cfg->flags & 698 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN))) 699 mode = MC_CMD_PHY_BIST_CABLE_LONG; 700 else 701 mode = MC_CMD_PHY_BIST_CABLE_SHORT; 702 } else if (phy_cfg->flags & 703 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN)) 704 mode = MC_CMD_PHY_BIST_CABLE_LONG; 705 706 if (mode != 0) { 707 rc = efx_mcdi_bist(efx, mode, results); 708 if (rc < 0) 709 return rc; 710 results += rc; 711 } 712 713 return 0; 714} 715 716const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index) 717{ 718 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 719 720 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_BIST_LBN)) { 721 if (index == 0) 722 return "bist"; 723 --index; 724 } 725 726 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_SHORT_LBN) | 727 (1 << MC_CMD_GET_PHY_CFG_BIST_CABLE_LONG_LBN))) { 728 if (index == 0) 729 return "cable"; 730 --index; 731 732 if (efx->phy_type == PHY_TYPE_SFT9001B) { 733 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) 734 return mcdi_sft9001_cable_diag_names[index]; 735 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); 736 } 737 } 738 739 return NULL; 740} 741 742struct efx_phy_operations efx_mcdi_phy_ops = { 743 .probe = efx_mcdi_phy_probe, 744 .init = efx_port_dummy_op_int, 745 .reconfigure = efx_mcdi_phy_reconfigure, 746 .poll = efx_mcdi_phy_poll, 747 .fini = efx_port_dummy_op_void, 748 .remove = efx_mcdi_phy_remove, 749 .get_settings = efx_mcdi_phy_get_settings, 750 .set_settings = efx_mcdi_phy_set_settings, 751 .test_alive = efx_mcdi_phy_test_alive, 752 .run_tests = efx_mcdi_phy_run_tests, 753 .test_name = efx_mcdi_phy_test_name, 754}; 755