1 /**************************************************************************** 2 * Driver for Solarflare network controllers and boards 3 * Copyright 2009-2013 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 "mcdi.h" 17 #include "mcdi_pcol.h" 18 #include "nic.h" 19 #include "selftest.h" 20 21 struct efx_mcdi_phy_data { 22 u32 flags; 23 u32 type; 24 u32 supported_cap; 25 u32 channel; 26 u32 port; 27 u32 stats_mask; 28 u8 name[20]; 29 u32 media; 30 u32 mmd_mask; 31 u8 revision[20]; 32 u32 forced_cap; 33 }; 34 35 static int 36 efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg) 37 { 38 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN); 39 size_t outlen; 40 int rc; 41 42 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0); 43 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name)); 44 45 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0, 46 outbuf, sizeof(outbuf), &outlen); 47 if (rc) 48 goto fail; 49 50 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) { 51 rc = -EIO; 52 goto fail; 53 } 54 55 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS); 56 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE); 57 cfg->supported_cap = 58 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP); 59 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL); 60 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT); 61 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK); 62 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME), 63 sizeof(cfg->name)); 64 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE); 65 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK); 66 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION), 67 sizeof(cfg->revision)); 68 69 return 0; 70 71 fail: 72 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 73 return rc; 74 } 75 76 static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities, 77 u32 flags, u32 loopback_mode, 78 u32 loopback_speed) 79 { 80 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN); 81 int rc; 82 83 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); 84 85 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); 86 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); 87 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); 88 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); 89 90 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), 91 NULL, 0, NULL); 92 return rc; 93 } 94 95 static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) 96 { 97 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN); 98 size_t outlen; 99 int rc; 100 101 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, 102 outbuf, sizeof(outbuf), &outlen); 103 if (rc) 104 goto fail; 105 106 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST + 107 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) { 108 rc = -EIO; 109 goto fail; 110 } 111 112 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED); 113 114 return 0; 115 116 fail: 117 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 118 return rc; 119 } 120 121 static int efx_mcdi_mdio_read(struct net_device *net_dev, 122 int prtad, int devad, u16 addr) 123 { 124 struct efx_nic *efx = netdev_priv(net_dev); 125 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN); 126 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN); 127 size_t outlen; 128 int rc; 129 130 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus); 131 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad); 132 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad); 133 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr); 134 135 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf), 136 outbuf, sizeof(outbuf), &outlen); 137 if (rc) 138 return rc; 139 140 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) != 141 MC_CMD_MDIO_STATUS_GOOD) 142 return -EIO; 143 144 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); 145 } 146 147 static int efx_mcdi_mdio_write(struct net_device *net_dev, 148 int prtad, int devad, u16 addr, u16 value) 149 { 150 struct efx_nic *efx = netdev_priv(net_dev); 151 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN); 152 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN); 153 size_t outlen; 154 int rc; 155 156 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus); 157 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad); 158 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad); 159 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr); 160 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value); 161 162 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf), 163 outbuf, sizeof(outbuf), &outlen); 164 if (rc) 165 return rc; 166 167 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) != 168 MC_CMD_MDIO_STATUS_GOOD) 169 return -EIO; 170 171 return 0; 172 } 173 174 static u32 mcdi_to_ethtool_cap(u32 media, u32 cap) 175 { 176 u32 result = 0; 177 178 switch (media) { 179 case MC_CMD_MEDIA_KX4: 180 result |= SUPPORTED_Backplane; 181 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 182 result |= SUPPORTED_1000baseKX_Full; 183 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 184 result |= SUPPORTED_10000baseKX4_Full; 185 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) 186 result |= SUPPORTED_40000baseKR4_Full; 187 break; 188 189 case MC_CMD_MEDIA_XFP: 190 case MC_CMD_MEDIA_SFP_PLUS: 191 case MC_CMD_MEDIA_QSFP_PLUS: 192 result |= SUPPORTED_FIBRE; 193 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 194 result |= SUPPORTED_1000baseT_Full; 195 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 196 result |= SUPPORTED_10000baseT_Full; 197 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) 198 result |= SUPPORTED_40000baseCR4_Full; 199 break; 200 201 case MC_CMD_MEDIA_BASE_T: 202 result |= SUPPORTED_TP; 203 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) 204 result |= SUPPORTED_10baseT_Half; 205 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) 206 result |= SUPPORTED_10baseT_Full; 207 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) 208 result |= SUPPORTED_100baseT_Half; 209 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) 210 result |= SUPPORTED_100baseT_Full; 211 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) 212 result |= SUPPORTED_1000baseT_Half; 213 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 214 result |= SUPPORTED_1000baseT_Full; 215 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 216 result |= SUPPORTED_10000baseT_Full; 217 break; 218 } 219 220 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 221 result |= SUPPORTED_Pause; 222 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 223 result |= SUPPORTED_Asym_Pause; 224 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 225 result |= SUPPORTED_Autoneg; 226 227 return result; 228 } 229 230 static u32 ethtool_to_mcdi_cap(u32 cap) 231 { 232 u32 result = 0; 233 234 if (cap & SUPPORTED_10baseT_Half) 235 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); 236 if (cap & SUPPORTED_10baseT_Full) 237 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); 238 if (cap & SUPPORTED_100baseT_Half) 239 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); 240 if (cap & SUPPORTED_100baseT_Full) 241 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); 242 if (cap & SUPPORTED_1000baseT_Half) 243 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); 244 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full)) 245 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); 246 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full)) 247 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); 248 if (cap & (SUPPORTED_40000baseCR4_Full | SUPPORTED_40000baseKR4_Full)) 249 result |= (1 << MC_CMD_PHY_CAP_40000FDX_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 } 259 260 static 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_OUT_TXDIS_LBN)) 269 supported |= PHY_MODE_TX_DISABLED; 270 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN)) 271 supported |= PHY_MODE_LOW_POWER; 272 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_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_IN_TXDIS_LBN); 280 if (mode & PHY_MODE_LOW_POWER) 281 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN); 282 if (mode & PHY_MODE_OFF) 283 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN); 284 285 return flags; 286 } 287 288 static 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 case MC_CMD_MEDIA_QSFP_PLUS: 299 return PORT_FIBRE; 300 301 case MC_CMD_MEDIA_BASE_T: 302 return PORT_TP; 303 304 default: 305 return PORT_OTHER; 306 } 307 } 308 309 static void efx_mcdi_phy_decode_link(struct efx_nic *efx, 310 struct efx_link_state *link_state, 311 u32 speed, u32 flags, u32 fcntl) 312 { 313 switch (fcntl) { 314 case MC_CMD_FCNTL_AUTO: 315 WARN_ON(1); /* This is not a link mode */ 316 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; 317 break; 318 case MC_CMD_FCNTL_BIDIR: 319 link_state->fc = EFX_FC_TX | EFX_FC_RX; 320 break; 321 case MC_CMD_FCNTL_RESPOND: 322 link_state->fc = EFX_FC_RX; 323 break; 324 default: 325 WARN_ON(1); 326 case MC_CMD_FCNTL_OFF: 327 link_state->fc = 0; 328 break; 329 } 330 331 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN)); 332 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN)); 333 link_state->speed = speed; 334 } 335 336 static int efx_mcdi_phy_probe(struct efx_nic *efx) 337 { 338 struct efx_mcdi_phy_data *phy_data; 339 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 340 u32 caps; 341 int rc; 342 343 /* Initialise and populate phy_data */ 344 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); 345 if (phy_data == NULL) 346 return -ENOMEM; 347 348 rc = efx_mcdi_get_phy_cfg(efx, phy_data); 349 if (rc != 0) 350 goto fail; 351 352 /* Read initial link advertisement */ 353 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 354 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 355 outbuf, sizeof(outbuf), NULL); 356 if (rc) 357 goto fail; 358 359 /* Fill out nic state */ 360 efx->phy_data = phy_data; 361 efx->phy_type = phy_data->type; 362 363 efx->mdio_bus = phy_data->channel; 364 efx->mdio.prtad = phy_data->port; 365 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); 366 efx->mdio.mode_support = 0; 367 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) 368 efx->mdio.mode_support |= MDIO_SUPPORTS_C22; 369 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) 370 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 371 372 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); 373 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) 374 efx->link_advertising = 375 mcdi_to_ethtool_cap(phy_data->media, caps); 376 else 377 phy_data->forced_cap = caps; 378 379 /* Assert that we can map efx -> mcdi loopback modes */ 380 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); 381 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); 382 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); 383 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); 384 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); 385 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); 386 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); 387 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); 388 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); 389 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); 390 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); 391 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); 392 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); 393 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); 394 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); 395 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); 396 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); 397 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); 398 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); 399 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); 400 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); 401 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); 402 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); 403 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); 404 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); 405 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); 406 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); 407 408 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); 409 if (rc != 0) 410 goto fail; 411 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, 412 * but by convention we don't */ 413 efx->loopback_modes &= ~(1 << LOOPBACK_NONE); 414 415 /* Set the initial link mode */ 416 efx_mcdi_phy_decode_link( 417 efx, &efx->link_state, 418 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 419 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 420 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 421 422 /* Default to Autonegotiated flow control if the PHY supports it */ 423 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; 424 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 425 efx->wanted_fc |= EFX_FC_AUTO; 426 efx_link_set_wanted_fc(efx, efx->wanted_fc); 427 428 return 0; 429 430 fail: 431 kfree(phy_data); 432 return rc; 433 } 434 435 int efx_mcdi_port_reconfigure(struct efx_nic *efx) 436 { 437 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 438 u32 caps = (efx->link_advertising ? 439 ethtool_to_mcdi_cap(efx->link_advertising) : 440 phy_cfg->forced_cap); 441 442 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 443 efx->loopback_mode, 0); 444 } 445 446 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are 447 * supported by the link partner. Warn the user if this isn't the case 448 */ 449 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) 450 { 451 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 452 u32 rmtadv; 453 454 /* The link partner capabilities are only relevant if the 455 * link supports flow control autonegotiation */ 456 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 457 return; 458 459 /* If flow control autoneg is supported and enabled, then fine */ 460 if (efx->wanted_fc & EFX_FC_AUTO) 461 return; 462 463 rmtadv = 0; 464 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 465 rmtadv |= ADVERTISED_Pause; 466 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 467 rmtadv |= ADVERTISED_Asym_Pause; 468 469 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) 470 netif_err(efx, link, efx->net_dev, 471 "warning: link partner doesn't support pause frames"); 472 } 473 474 static bool efx_mcdi_phy_poll(struct efx_nic *efx) 475 { 476 struct efx_link_state old_state = efx->link_state; 477 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 478 int rc; 479 480 WARN_ON(!mutex_is_locked(&efx->mac_lock)); 481 482 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 483 484 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 485 outbuf, sizeof(outbuf), NULL); 486 if (rc) 487 efx->link_state.up = false; 488 else 489 efx_mcdi_phy_decode_link( 490 efx, &efx->link_state, 491 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 492 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 493 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 494 495 return !efx_link_state_equal(&efx->link_state, &old_state); 496 } 497 498 static void efx_mcdi_phy_remove(struct efx_nic *efx) 499 { 500 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 501 502 efx->phy_data = NULL; 503 kfree(phy_data); 504 } 505 506 static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, 507 struct ethtool_link_ksettings *cmd) 508 { 509 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 510 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 511 int rc; 512 u32 supported, advertising, lp_advertising; 513 514 supported = mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap); 515 advertising = efx->link_advertising; 516 cmd->base.speed = efx->link_state.speed; 517 cmd->base.duplex = efx->link_state.fd; 518 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media); 519 cmd->base.phy_address = phy_cfg->port; 520 cmd->base.autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg); 521 cmd->base.mdio_support = (efx->mdio.mode_support & 522 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); 523 524 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, 525 supported); 526 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, 527 advertising); 528 529 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 530 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 531 outbuf, sizeof(outbuf), NULL); 532 if (rc) 533 return; 534 lp_advertising = 535 mcdi_to_ethtool_cap(phy_cfg->media, 536 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP)); 537 538 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, 539 lp_advertising); 540 } 541 542 static int 543 efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, 544 const struct ethtool_link_ksettings *cmd) 545 { 546 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 547 u32 caps; 548 int rc; 549 u32 advertising; 550 551 ethtool_convert_link_mode_to_legacy_u32(&advertising, 552 cmd->link_modes.advertising); 553 554 if (cmd->base.autoneg) { 555 caps = (ethtool_to_mcdi_cap(advertising) | 556 1 << MC_CMD_PHY_CAP_AN_LBN); 557 } else if (cmd->base.duplex) { 558 switch (cmd->base.speed) { 559 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; 560 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; 561 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; 562 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; 563 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break; 564 default: return -EINVAL; 565 } 566 } else { 567 switch (cmd->base.speed) { 568 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; 569 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; 570 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; 571 default: return -EINVAL; 572 } 573 } 574 575 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 576 efx->loopback_mode, 0); 577 if (rc) 578 return rc; 579 580 if (cmd->base.autoneg) { 581 efx_link_set_advertising( 582 efx, advertising | ADVERTISED_Autoneg); 583 phy_cfg->forced_cap = 0; 584 } else { 585 efx_link_set_advertising(efx, 0); 586 phy_cfg->forced_cap = caps; 587 } 588 return 0; 589 } 590 591 static int efx_mcdi_phy_test_alive(struct efx_nic *efx) 592 { 593 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN); 594 size_t outlen; 595 int rc; 596 597 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); 598 599 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, 600 outbuf, sizeof(outbuf), &outlen); 601 if (rc) 602 return rc; 603 604 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) 605 return -EIO; 606 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) 607 return -EINVAL; 608 609 return 0; 610 } 611 612 static const char *const mcdi_sft9001_cable_diag_names[] = { 613 "cable.pairA.length", 614 "cable.pairB.length", 615 "cable.pairC.length", 616 "cable.pairD.length", 617 "cable.pairA.status", 618 "cable.pairB.status", 619 "cable.pairC.status", 620 "cable.pairD.status", 621 }; 622 623 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, 624 int *results) 625 { 626 unsigned int retry, i, count = 0; 627 size_t outlen; 628 u32 status; 629 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN); 630 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN); 631 u8 *ptr; 632 int rc; 633 634 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); 635 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode); 636 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, 637 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL); 638 if (rc) 639 goto out; 640 641 /* Wait up to 10s for BIST to finish */ 642 for (retry = 0; retry < 100; ++retry) { 643 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); 644 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, 645 outbuf, sizeof(outbuf), &outlen); 646 if (rc) 647 goto out; 648 649 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT); 650 if (status != MC_CMD_POLL_BIST_RUNNING) 651 goto finished; 652 653 msleep(100); 654 } 655 656 rc = -ETIMEDOUT; 657 goto out; 658 659 finished: 660 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; 661 662 /* SFT9001 specific cable diagnostics output */ 663 if (efx->phy_type == PHY_TYPE_SFT9001B && 664 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || 665 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { 666 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); 667 if (status == MC_CMD_POLL_BIST_PASSED && 668 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { 669 for (i = 0; i < 8; i++) { 670 results[count + i] = 671 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], 672 EFX_DWORD_0); 673 } 674 } 675 count += 8; 676 } 677 rc = count; 678 679 out: 680 return rc; 681 } 682 683 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, 684 unsigned flags) 685 { 686 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 687 u32 mode; 688 int rc; 689 690 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 691 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); 692 if (rc < 0) 693 return rc; 694 695 results += rc; 696 } 697 698 /* If we support both LONG and SHORT, then run each in response to 699 * break or not. Otherwise, run the one we support */ 700 mode = 0; 701 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { 702 if ((flags & ETH_TEST_FL_OFFLINE) && 703 (phy_cfg->flags & 704 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) 705 mode = MC_CMD_PHY_BIST_CABLE_LONG; 706 else 707 mode = MC_CMD_PHY_BIST_CABLE_SHORT; 708 } else if (phy_cfg->flags & 709 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) 710 mode = MC_CMD_PHY_BIST_CABLE_LONG; 711 712 if (mode != 0) { 713 rc = efx_mcdi_bist(efx, mode, results); 714 if (rc < 0) 715 return rc; 716 results += rc; 717 } 718 719 return 0; 720 } 721 722 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx, 723 unsigned int index) 724 { 725 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 726 727 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 728 if (index == 0) 729 return "bist"; 730 --index; 731 } 732 733 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | 734 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { 735 if (index == 0) 736 return "cable"; 737 --index; 738 739 if (efx->phy_type == PHY_TYPE_SFT9001B) { 740 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) 741 return mcdi_sft9001_cable_diag_names[index]; 742 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); 743 } 744 } 745 746 return NULL; 747 } 748 749 #define SFP_PAGE_SIZE 128 750 #define SFP_NUM_PAGES 2 751 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, 752 struct ethtool_eeprom *ee, u8 *data) 753 { 754 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX); 755 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN); 756 size_t outlen; 757 int rc; 758 unsigned int payload_len; 759 unsigned int space_remaining = ee->len; 760 unsigned int page; 761 unsigned int page_off; 762 unsigned int to_copy; 763 u8 *user_data = data; 764 765 BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN); 766 767 page_off = ee->offset % SFP_PAGE_SIZE; 768 page = ee->offset / SFP_PAGE_SIZE; 769 770 while (space_remaining && (page < SFP_NUM_PAGES)) { 771 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); 772 773 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO, 774 inbuf, sizeof(inbuf), 775 outbuf, sizeof(outbuf), 776 &outlen); 777 if (rc) 778 return rc; 779 780 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + 781 SFP_PAGE_SIZE)) 782 return -EIO; 783 784 payload_len = MCDI_DWORD(outbuf, 785 GET_PHY_MEDIA_INFO_OUT_DATALEN); 786 if (payload_len != SFP_PAGE_SIZE) 787 return -EIO; 788 789 /* Copy as much as we can into data */ 790 payload_len -= page_off; 791 to_copy = (space_remaining < payload_len) ? 792 space_remaining : payload_len; 793 794 memcpy(user_data, 795 MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off, 796 to_copy); 797 798 space_remaining -= to_copy; 799 user_data += to_copy; 800 page_off = 0; 801 page++; 802 } 803 804 return 0; 805 } 806 807 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx, 808 struct ethtool_modinfo *modinfo) 809 { 810 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 811 812 switch (phy_cfg->media) { 813 case MC_CMD_MEDIA_SFP_PLUS: 814 modinfo->type = ETH_MODULE_SFF_8079; 815 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 816 return 0; 817 default: 818 return -EOPNOTSUPP; 819 } 820 } 821 822 static const struct efx_phy_operations efx_mcdi_phy_ops = { 823 .probe = efx_mcdi_phy_probe, 824 .init = efx_port_dummy_op_int, 825 .reconfigure = efx_mcdi_port_reconfigure, 826 .poll = efx_mcdi_phy_poll, 827 .fini = efx_port_dummy_op_void, 828 .remove = efx_mcdi_phy_remove, 829 .get_link_ksettings = efx_mcdi_phy_get_link_ksettings, 830 .set_link_ksettings = efx_mcdi_phy_set_link_ksettings, 831 .test_alive = efx_mcdi_phy_test_alive, 832 .run_tests = efx_mcdi_phy_run_tests, 833 .test_name = efx_mcdi_phy_test_name, 834 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom, 835 .get_module_info = efx_mcdi_phy_get_module_info, 836 }; 837 838 u32 efx_mcdi_phy_get_caps(struct efx_nic *efx) 839 { 840 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 841 842 return phy_data->supported_cap; 843 } 844 845 static unsigned int efx_mcdi_event_link_speed[] = { 846 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, 847 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, 848 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, 849 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000, 850 }; 851 852 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) 853 { 854 u32 flags, fcntl, speed, lpa; 855 856 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); 857 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); 858 speed = efx_mcdi_event_link_speed[speed]; 859 860 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); 861 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); 862 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); 863 864 /* efx->link_state is only modified by efx_mcdi_phy_get_link(), 865 * which is only run after flushing the event queues. Therefore, it 866 * is safe to modify the link state outside of the mac_lock here. 867 */ 868 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); 869 870 efx_mcdi_phy_check_fcntl(efx, lpa); 871 872 efx_link_status_changed(efx); 873 } 874 875 int efx_mcdi_set_mac(struct efx_nic *efx) 876 { 877 u32 fcntl; 878 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN); 879 880 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 881 882 /* This has no effect on EF10 */ 883 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), 884 efx->net_dev->dev_addr); 885 886 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, 887 EFX_MAX_FRAME_LEN(efx->net_dev->mtu)); 888 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); 889 890 /* Set simple MAC filter for Siena */ 891 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT, 892 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter); 893 894 switch (efx->wanted_fc) { 895 case EFX_FC_RX | EFX_FC_TX: 896 fcntl = MC_CMD_FCNTL_BIDIR; 897 break; 898 case EFX_FC_RX: 899 fcntl = MC_CMD_FCNTL_RESPOND; 900 break; 901 default: 902 fcntl = MC_CMD_FCNTL_OFF; 903 break; 904 } 905 if (efx->wanted_fc & EFX_FC_AUTO) 906 fcntl = MC_CMD_FCNTL_AUTO; 907 if (efx->fc_disable) 908 fcntl = MC_CMD_FCNTL_OFF; 909 910 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); 911 912 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), 913 NULL, 0, NULL); 914 } 915 916 bool efx_mcdi_mac_check_fault(struct efx_nic *efx) 917 { 918 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 919 size_t outlength; 920 int rc; 921 922 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 923 924 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 925 outbuf, sizeof(outbuf), &outlength); 926 if (rc) 927 return true; 928 929 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; 930 } 931 932 enum efx_stats_action { 933 EFX_STATS_ENABLE, 934 EFX_STATS_DISABLE, 935 EFX_STATS_PULL, 936 }; 937 938 static int efx_mcdi_mac_stats(struct efx_nic *efx, 939 enum efx_stats_action action, int clear) 940 { 941 struct efx_ef10_nic_data *nic_data = efx->nic_data; 942 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); 943 int rc; 944 int change = action == EFX_STATS_PULL ? 0 : 1; 945 int enable = action == EFX_STATS_ENABLE ? 1 : 0; 946 int period = action == EFX_STATS_ENABLE ? 1000 : 0; 947 dma_addr_t dma_addr = efx->stats_buffer.dma_addr; 948 u32 dma_len = action != EFX_STATS_DISABLE ? 949 MC_CMD_MAC_NSTATS * sizeof(u64) : 0; 950 951 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); 952 953 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr); 954 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, 955 MAC_STATS_IN_DMA, !!enable, 956 MAC_STATS_IN_CLEAR, clear, 957 MAC_STATS_IN_PERIODIC_CHANGE, change, 958 MAC_STATS_IN_PERIODIC_ENABLE, enable, 959 MAC_STATS_IN_PERIODIC_CLEAR, 0, 960 MAC_STATS_IN_PERIODIC_NOEVENT, 1, 961 MAC_STATS_IN_PERIOD_MS, period); 962 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); 963 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id); 964 965 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), 966 NULL, 0, NULL); 967 /* Expect ENOENT if DMA queues have not been set up */ 968 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues))) 969 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf), 970 NULL, 0, rc); 971 return rc; 972 } 973 974 void efx_mcdi_mac_start_stats(struct efx_nic *efx) 975 { 976 __le64 *dma_stats = efx->stats_buffer.addr; 977 978 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID; 979 980 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); 981 } 982 983 void efx_mcdi_mac_stop_stats(struct efx_nic *efx) 984 { 985 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); 986 } 987 988 #define EFX_MAC_STATS_WAIT_US 100 989 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10 990 991 void efx_mcdi_mac_pull_stats(struct efx_nic *efx) 992 { 993 __le64 *dma_stats = efx->stats_buffer.addr; 994 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; 995 996 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID; 997 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); 998 999 while (dma_stats[MC_CMD_MAC_GENERATION_END] == 1000 EFX_MC_STATS_GENERATION_INVALID && 1001 attempts-- != 0) 1002 udelay(EFX_MAC_STATS_WAIT_US); 1003 } 1004 1005 int efx_mcdi_port_probe(struct efx_nic *efx) 1006 { 1007 int rc; 1008 1009 /* Hook in PHY operations table */ 1010 efx->phy_op = &efx_mcdi_phy_ops; 1011 1012 /* Set up MDIO structure for PHY */ 1013 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 1014 efx->mdio.mdio_read = efx_mcdi_mdio_read; 1015 efx->mdio.mdio_write = efx_mcdi_mdio_write; 1016 1017 /* Fill out MDIO structure, loopback modes, and initial link state */ 1018 rc = efx->phy_op->probe(efx); 1019 if (rc != 0) 1020 return rc; 1021 1022 /* Allocate buffer for stats */ 1023 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, 1024 MC_CMD_MAC_NSTATS * sizeof(u64), GFP_KERNEL); 1025 if (rc) 1026 return rc; 1027 netif_dbg(efx, probe, efx->net_dev, 1028 "stats buffer at %llx (virt %p phys %llx)\n", 1029 (u64)efx->stats_buffer.dma_addr, 1030 efx->stats_buffer.addr, 1031 (u64)virt_to_phys(efx->stats_buffer.addr)); 1032 1033 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1); 1034 1035 return 0; 1036 } 1037 1038 void efx_mcdi_port_remove(struct efx_nic *efx) 1039 { 1040 efx->phy_op->remove(efx); 1041 efx_nic_free_buffer(efx, &efx->stats_buffer); 1042 } 1043 1044 /* Get physical port number (EF10 only; on Siena it is same as PF number) */ 1045 int efx_mcdi_port_get_number(struct efx_nic *efx) 1046 { 1047 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN); 1048 int rc; 1049 1050 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0, 1051 outbuf, sizeof(outbuf), NULL); 1052 if (rc) 1053 return rc; 1054 1055 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT); 1056 } 1057