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 void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset) 175 { 176 #define SET_BIT(name) __set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ 177 linkset) 178 179 bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS); 180 switch (media) { 181 case MC_CMD_MEDIA_KX4: 182 SET_BIT(Backplane); 183 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 184 SET_BIT(1000baseKX_Full); 185 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 186 SET_BIT(10000baseKX4_Full); 187 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) 188 SET_BIT(40000baseKR4_Full); 189 break; 190 191 case MC_CMD_MEDIA_XFP: 192 case MC_CMD_MEDIA_SFP_PLUS: 193 case MC_CMD_MEDIA_QSFP_PLUS: 194 SET_BIT(FIBRE); 195 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 196 SET_BIT(1000baseT_Full); 197 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 198 SET_BIT(10000baseT_Full); 199 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) 200 SET_BIT(40000baseCR4_Full); 201 if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN)) 202 SET_BIT(100000baseCR4_Full); 203 if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN)) 204 SET_BIT(25000baseCR_Full); 205 if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN)) 206 SET_BIT(50000baseCR2_Full); 207 break; 208 209 case MC_CMD_MEDIA_BASE_T: 210 SET_BIT(TP); 211 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) 212 SET_BIT(10baseT_Half); 213 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) 214 SET_BIT(10baseT_Full); 215 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) 216 SET_BIT(100baseT_Half); 217 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) 218 SET_BIT(100baseT_Full); 219 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) 220 SET_BIT(1000baseT_Half); 221 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 222 SET_BIT(1000baseT_Full); 223 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 224 SET_BIT(10000baseT_Full); 225 break; 226 } 227 228 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 229 SET_BIT(Pause); 230 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 231 SET_BIT(Asym_Pause); 232 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 233 SET_BIT(Autoneg); 234 235 #undef SET_BIT 236 } 237 238 static u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset) 239 { 240 u32 result = 0; 241 242 #define TEST_BIT(name) test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ 243 linkset) 244 245 if (TEST_BIT(10baseT_Half)) 246 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); 247 if (TEST_BIT(10baseT_Full)) 248 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); 249 if (TEST_BIT(100baseT_Half)) 250 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); 251 if (TEST_BIT(100baseT_Full)) 252 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); 253 if (TEST_BIT(1000baseT_Half)) 254 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); 255 if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full)) 256 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); 257 if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full)) 258 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); 259 if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full)) 260 result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN); 261 if (TEST_BIT(100000baseCR4_Full)) 262 result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN); 263 if (TEST_BIT(25000baseCR_Full)) 264 result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN); 265 if (TEST_BIT(50000baseCR2_Full)) 266 result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN); 267 if (TEST_BIT(Pause)) 268 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); 269 if (TEST_BIT(Asym_Pause)) 270 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); 271 if (TEST_BIT(Autoneg)) 272 result |= (1 << MC_CMD_PHY_CAP_AN_LBN); 273 274 #undef TEST_BIT 275 276 return result; 277 } 278 279 static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) 280 { 281 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 282 enum efx_phy_mode mode, supported; 283 u32 flags; 284 285 /* TODO: Advertise the capabilities supported by this PHY */ 286 supported = 0; 287 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN)) 288 supported |= PHY_MODE_TX_DISABLED; 289 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN)) 290 supported |= PHY_MODE_LOW_POWER; 291 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN)) 292 supported |= PHY_MODE_OFF; 293 294 mode = efx->phy_mode & supported; 295 296 flags = 0; 297 if (mode & PHY_MODE_TX_DISABLED) 298 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN); 299 if (mode & PHY_MODE_LOW_POWER) 300 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN); 301 if (mode & PHY_MODE_OFF) 302 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN); 303 304 return flags; 305 } 306 307 static u8 mcdi_to_ethtool_media(u32 media) 308 { 309 switch (media) { 310 case MC_CMD_MEDIA_XAUI: 311 case MC_CMD_MEDIA_CX4: 312 case MC_CMD_MEDIA_KX4: 313 return PORT_OTHER; 314 315 case MC_CMD_MEDIA_XFP: 316 case MC_CMD_MEDIA_SFP_PLUS: 317 case MC_CMD_MEDIA_QSFP_PLUS: 318 return PORT_FIBRE; 319 320 case MC_CMD_MEDIA_BASE_T: 321 return PORT_TP; 322 323 default: 324 return PORT_OTHER; 325 } 326 } 327 328 static void efx_mcdi_phy_decode_link(struct efx_nic *efx, 329 struct efx_link_state *link_state, 330 u32 speed, u32 flags, u32 fcntl) 331 { 332 switch (fcntl) { 333 case MC_CMD_FCNTL_AUTO: 334 WARN_ON(1); /* This is not a link mode */ 335 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; 336 break; 337 case MC_CMD_FCNTL_BIDIR: 338 link_state->fc = EFX_FC_TX | EFX_FC_RX; 339 break; 340 case MC_CMD_FCNTL_RESPOND: 341 link_state->fc = EFX_FC_RX; 342 break; 343 default: 344 WARN_ON(1); 345 case MC_CMD_FCNTL_OFF: 346 link_state->fc = 0; 347 break; 348 } 349 350 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN)); 351 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN)); 352 link_state->speed = speed; 353 } 354 355 static int efx_mcdi_phy_probe(struct efx_nic *efx) 356 { 357 struct efx_mcdi_phy_data *phy_data; 358 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 359 u32 caps; 360 int rc; 361 362 /* Initialise and populate phy_data */ 363 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); 364 if (phy_data == NULL) 365 return -ENOMEM; 366 367 rc = efx_mcdi_get_phy_cfg(efx, phy_data); 368 if (rc != 0) 369 goto fail; 370 371 /* Read initial link advertisement */ 372 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 373 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 374 outbuf, sizeof(outbuf), NULL); 375 if (rc) 376 goto fail; 377 378 /* Fill out nic state */ 379 efx->phy_data = phy_data; 380 efx->phy_type = phy_data->type; 381 382 efx->mdio_bus = phy_data->channel; 383 efx->mdio.prtad = phy_data->port; 384 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); 385 efx->mdio.mode_support = 0; 386 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) 387 efx->mdio.mode_support |= MDIO_SUPPORTS_C22; 388 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) 389 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 390 391 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); 392 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) 393 mcdi_to_ethtool_linkset(phy_data->media, caps, 394 efx->link_advertising); 395 else 396 phy_data->forced_cap = caps; 397 398 /* Assert that we can map efx -> mcdi loopback modes */ 399 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); 400 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); 401 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); 402 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); 403 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); 404 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); 405 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); 406 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); 407 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); 408 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); 409 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); 410 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); 411 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); 412 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); 413 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); 414 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); 415 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); 416 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); 417 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); 418 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); 419 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); 420 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); 421 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); 422 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); 423 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); 424 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); 425 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); 426 427 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); 428 if (rc != 0) 429 goto fail; 430 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, 431 * but by convention we don't */ 432 efx->loopback_modes &= ~(1 << LOOPBACK_NONE); 433 434 /* Set the initial link mode */ 435 efx_mcdi_phy_decode_link( 436 efx, &efx->link_state, 437 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 438 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 439 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 440 441 /* Default to Autonegotiated flow control if the PHY supports it */ 442 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; 443 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 444 efx->wanted_fc |= EFX_FC_AUTO; 445 efx_link_set_wanted_fc(efx, efx->wanted_fc); 446 447 return 0; 448 449 fail: 450 kfree(phy_data); 451 return rc; 452 } 453 454 int efx_mcdi_port_reconfigure(struct efx_nic *efx) 455 { 456 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 457 u32 caps = (efx->link_advertising[0] ? 458 ethtool_linkset_to_mcdi_cap(efx->link_advertising) : 459 phy_cfg->forced_cap); 460 461 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 462 efx->loopback_mode, 0); 463 } 464 465 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are 466 * supported by the link partner. Warn the user if this isn't the case 467 */ 468 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) 469 { 470 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 471 u32 rmtadv; 472 473 /* The link partner capabilities are only relevant if the 474 * link supports flow control autonegotiation */ 475 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 476 return; 477 478 /* If flow control autoneg is supported and enabled, then fine */ 479 if (efx->wanted_fc & EFX_FC_AUTO) 480 return; 481 482 rmtadv = 0; 483 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 484 rmtadv |= ADVERTISED_Pause; 485 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 486 rmtadv |= ADVERTISED_Asym_Pause; 487 488 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) 489 netif_err(efx, link, efx->net_dev, 490 "warning: link partner doesn't support pause frames"); 491 } 492 493 static bool efx_mcdi_phy_poll(struct efx_nic *efx) 494 { 495 struct efx_link_state old_state = efx->link_state; 496 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 497 int rc; 498 499 WARN_ON(!mutex_is_locked(&efx->mac_lock)); 500 501 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 502 503 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 504 outbuf, sizeof(outbuf), NULL); 505 if (rc) 506 efx->link_state.up = false; 507 else 508 efx_mcdi_phy_decode_link( 509 efx, &efx->link_state, 510 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 511 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 512 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 513 514 return !efx_link_state_equal(&efx->link_state, &old_state); 515 } 516 517 static 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 static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, 526 struct ethtool_link_ksettings *cmd) 527 { 528 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 529 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 530 int rc; 531 532 cmd->base.speed = efx->link_state.speed; 533 cmd->base.duplex = efx->link_state.fd; 534 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media); 535 cmd->base.phy_address = phy_cfg->port; 536 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg); 537 cmd->base.mdio_support = (efx->mdio.mode_support & 538 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); 539 540 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap, 541 cmd->link_modes.supported); 542 memcpy(cmd->link_modes.advertising, efx->link_advertising, 543 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK())); 544 545 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 546 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 547 outbuf, sizeof(outbuf), NULL); 548 if (rc) 549 return; 550 mcdi_to_ethtool_linkset(phy_cfg->media, 551 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP), 552 cmd->link_modes.lp_advertising); 553 } 554 555 static int 556 efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, 557 const struct ethtool_link_ksettings *cmd) 558 { 559 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 560 u32 caps; 561 int rc; 562 563 if (cmd->base.autoneg) { 564 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) | 565 1 << MC_CMD_PHY_CAP_AN_LBN); 566 } else if (cmd->base.duplex) { 567 switch (cmd->base.speed) { 568 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; 569 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; 570 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; 571 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; 572 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break; 573 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break; 574 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break; 575 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break; 576 default: return -EINVAL; 577 } 578 } else { 579 switch (cmd->base.speed) { 580 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; 581 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; 582 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; 583 default: return -EINVAL; 584 } 585 } 586 587 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 588 efx->loopback_mode, 0); 589 if (rc) 590 return rc; 591 592 if (cmd->base.autoneg) { 593 efx_link_set_advertising(efx, cmd->link_modes.advertising); 594 phy_cfg->forced_cap = 0; 595 } else { 596 efx_link_clear_advertising(efx); 597 phy_cfg->forced_cap = caps; 598 } 599 return 0; 600 } 601 602 static int efx_mcdi_phy_test_alive(struct efx_nic *efx) 603 { 604 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN); 605 size_t outlen; 606 int rc; 607 608 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); 609 610 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, 611 outbuf, sizeof(outbuf), &outlen); 612 if (rc) 613 return rc; 614 615 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) 616 return -EIO; 617 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) 618 return -EINVAL; 619 620 return 0; 621 } 622 623 static const char *const mcdi_sft9001_cable_diag_names[] = { 624 "cable.pairA.length", 625 "cable.pairB.length", 626 "cable.pairC.length", 627 "cable.pairD.length", 628 "cable.pairA.status", 629 "cable.pairB.status", 630 "cable.pairC.status", 631 "cable.pairD.status", 632 }; 633 634 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, 635 int *results) 636 { 637 unsigned int retry, i, count = 0; 638 size_t outlen; 639 u32 status; 640 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN); 641 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN); 642 u8 *ptr; 643 int rc; 644 645 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); 646 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode); 647 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, 648 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL); 649 if (rc) 650 goto out; 651 652 /* Wait up to 10s for BIST to finish */ 653 for (retry = 0; retry < 100; ++retry) { 654 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); 655 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, 656 outbuf, sizeof(outbuf), &outlen); 657 if (rc) 658 goto out; 659 660 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT); 661 if (status != MC_CMD_POLL_BIST_RUNNING) 662 goto finished; 663 664 msleep(100); 665 } 666 667 rc = -ETIMEDOUT; 668 goto out; 669 670 finished: 671 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; 672 673 /* SFT9001 specific cable diagnostics output */ 674 if (efx->phy_type == PHY_TYPE_SFT9001B && 675 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || 676 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { 677 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); 678 if (status == MC_CMD_POLL_BIST_PASSED && 679 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { 680 for (i = 0; i < 8; i++) { 681 results[count + i] = 682 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], 683 EFX_DWORD_0); 684 } 685 } 686 count += 8; 687 } 688 rc = count; 689 690 out: 691 return rc; 692 } 693 694 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, 695 unsigned flags) 696 { 697 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 698 u32 mode; 699 int rc; 700 701 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 702 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); 703 if (rc < 0) 704 return rc; 705 706 results += rc; 707 } 708 709 /* If we support both LONG and SHORT, then run each in response to 710 * break or not. Otherwise, run the one we support */ 711 mode = 0; 712 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { 713 if ((flags & ETH_TEST_FL_OFFLINE) && 714 (phy_cfg->flags & 715 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) 716 mode = MC_CMD_PHY_BIST_CABLE_LONG; 717 else 718 mode = MC_CMD_PHY_BIST_CABLE_SHORT; 719 } else if (phy_cfg->flags & 720 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) 721 mode = MC_CMD_PHY_BIST_CABLE_LONG; 722 723 if (mode != 0) { 724 rc = efx_mcdi_bist(efx, mode, results); 725 if (rc < 0) 726 return rc; 727 results += rc; 728 } 729 730 return 0; 731 } 732 733 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx, 734 unsigned int index) 735 { 736 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 737 738 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 739 if (index == 0) 740 return "bist"; 741 --index; 742 } 743 744 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | 745 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { 746 if (index == 0) 747 return "cable"; 748 --index; 749 750 if (efx->phy_type == PHY_TYPE_SFT9001B) { 751 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) 752 return mcdi_sft9001_cable_diag_names[index]; 753 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); 754 } 755 } 756 757 return NULL; 758 } 759 760 #define SFP_PAGE_SIZE 128 761 #define SFF_DIAG_TYPE_OFFSET 92 762 #define SFF_DIAG_ADDR_CHANGE BIT(2) 763 #define SFF_8079_NUM_PAGES 2 764 #define SFF_8472_NUM_PAGES 4 765 #define SFF_8436_NUM_PAGES 5 766 #define SFF_DMT_LEVEL_OFFSET 94 767 768 /** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom 769 * @efx: NIC context 770 * @page: EEPROM page number 771 * @data: Destination data pointer 772 * @offset: Offset in page to copy from in to data 773 * @space: Space available in data 774 * 775 * Return: 776 * >=0 - amount of data copied 777 * <0 - error 778 */ 779 static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx, 780 unsigned int page, 781 u8 *data, ssize_t offset, 782 ssize_t space) 783 { 784 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX); 785 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN); 786 size_t outlen; 787 unsigned int payload_len; 788 unsigned int to_copy; 789 int rc; 790 791 if (offset > SFP_PAGE_SIZE) 792 return -EINVAL; 793 794 to_copy = min(space, SFP_PAGE_SIZE - offset); 795 796 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); 797 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO, 798 inbuf, sizeof(inbuf), 799 outbuf, sizeof(outbuf), 800 &outlen); 801 802 if (rc) 803 return rc; 804 805 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + 806 SFP_PAGE_SIZE)) 807 return -EIO; 808 809 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN); 810 if (payload_len != SFP_PAGE_SIZE) 811 return -EIO; 812 813 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset, 814 to_copy); 815 816 return to_copy; 817 } 818 819 static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx, 820 unsigned int page, 821 u8 byte) 822 { 823 int rc; 824 u8 data; 825 826 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1); 827 if (rc == 1) 828 return data; 829 830 return rc; 831 } 832 833 static int efx_mcdi_phy_diag_type(struct efx_nic *efx) 834 { 835 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */ 836 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 837 SFF_DIAG_TYPE_OFFSET); 838 } 839 840 static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx) 841 { 842 /* Page zero of the EEPROM includes the DMT level at byte 94. */ 843 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 844 SFF_DMT_LEVEL_OFFSET); 845 } 846 847 static u32 efx_mcdi_phy_module_type(struct efx_nic *efx) 848 { 849 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 850 851 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS) 852 return phy_data->media; 853 854 /* A QSFP+ NIC may actually have an SFP+ module attached. 855 * The ID is page 0, byte 0. 856 */ 857 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) { 858 case 0x3: 859 return MC_CMD_MEDIA_SFP_PLUS; 860 case 0xc: 861 case 0xd: 862 return MC_CMD_MEDIA_QSFP_PLUS; 863 default: 864 return 0; 865 } 866 } 867 868 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, 869 struct ethtool_eeprom *ee, u8 *data) 870 { 871 int rc; 872 ssize_t space_remaining = ee->len; 873 unsigned int page_off; 874 bool ignore_missing; 875 int num_pages; 876 int page; 877 878 switch (efx_mcdi_phy_module_type(efx)) { 879 case MC_CMD_MEDIA_SFP_PLUS: 880 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ? 881 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES; 882 page = 0; 883 ignore_missing = false; 884 break; 885 case MC_CMD_MEDIA_QSFP_PLUS: 886 num_pages = SFF_8436_NUM_PAGES; 887 page = -1; /* We obtain the lower page by asking for -1. */ 888 ignore_missing = true; /* Ignore missing pages after page 0. */ 889 break; 890 default: 891 return -EOPNOTSUPP; 892 } 893 894 page_off = ee->offset % SFP_PAGE_SIZE; 895 page += ee->offset / SFP_PAGE_SIZE; 896 897 while (space_remaining && (page < num_pages)) { 898 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, 899 data, page_off, 900 space_remaining); 901 902 if (rc > 0) { 903 space_remaining -= rc; 904 data += rc; 905 page_off = 0; 906 page++; 907 } else if (rc == 0) { 908 space_remaining = 0; 909 } else if (ignore_missing && (page > 0)) { 910 int intended_size = SFP_PAGE_SIZE - page_off; 911 912 space_remaining -= intended_size; 913 if (space_remaining < 0) { 914 space_remaining = 0; 915 } else { 916 memset(data, 0, intended_size); 917 data += intended_size; 918 page_off = 0; 919 page++; 920 rc = 0; 921 } 922 } else { 923 return rc; 924 } 925 } 926 927 return 0; 928 } 929 930 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx, 931 struct ethtool_modinfo *modinfo) 932 { 933 int sff_8472_level; 934 int diag_type; 935 936 switch (efx_mcdi_phy_module_type(efx)) { 937 case MC_CMD_MEDIA_SFP_PLUS: 938 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx); 939 940 /* If we can't read the diagnostics level we have none. */ 941 if (sff_8472_level < 0) 942 return -EOPNOTSUPP; 943 944 /* Check if this module requires the (unsupported) address 945 * change operation. 946 */ 947 diag_type = efx_mcdi_phy_diag_type(efx); 948 949 if ((sff_8472_level == 0) || 950 (diag_type & SFF_DIAG_ADDR_CHANGE)) { 951 modinfo->type = ETH_MODULE_SFF_8079; 952 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 953 } else { 954 modinfo->type = ETH_MODULE_SFF_8472; 955 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 956 } 957 break; 958 959 case MC_CMD_MEDIA_QSFP_PLUS: 960 modinfo->type = ETH_MODULE_SFF_8436; 961 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 962 break; 963 964 default: 965 return -EOPNOTSUPP; 966 } 967 968 return 0; 969 } 970 971 static const struct efx_phy_operations efx_mcdi_phy_ops = { 972 .probe = efx_mcdi_phy_probe, 973 .init = efx_port_dummy_op_int, 974 .reconfigure = efx_mcdi_port_reconfigure, 975 .poll = efx_mcdi_phy_poll, 976 .fini = efx_port_dummy_op_void, 977 .remove = efx_mcdi_phy_remove, 978 .get_link_ksettings = efx_mcdi_phy_get_link_ksettings, 979 .set_link_ksettings = efx_mcdi_phy_set_link_ksettings, 980 .test_alive = efx_mcdi_phy_test_alive, 981 .run_tests = efx_mcdi_phy_run_tests, 982 .test_name = efx_mcdi_phy_test_name, 983 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom, 984 .get_module_info = efx_mcdi_phy_get_module_info, 985 }; 986 987 u32 efx_mcdi_phy_get_caps(struct efx_nic *efx) 988 { 989 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 990 991 return phy_data->supported_cap; 992 } 993 994 static unsigned int efx_mcdi_event_link_speed[] = { 995 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, 996 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, 997 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, 998 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000, 999 [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000, 1000 [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000, 1001 [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000, 1002 }; 1003 1004 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) 1005 { 1006 u32 flags, fcntl, speed, lpa; 1007 1008 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); 1009 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); 1010 speed = efx_mcdi_event_link_speed[speed]; 1011 1012 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); 1013 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); 1014 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); 1015 1016 /* efx->link_state is only modified by efx_mcdi_phy_get_link(), 1017 * which is only run after flushing the event queues. Therefore, it 1018 * is safe to modify the link state outside of the mac_lock here. 1019 */ 1020 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); 1021 1022 efx_mcdi_phy_check_fcntl(efx, lpa); 1023 1024 efx_link_status_changed(efx); 1025 } 1026 1027 int efx_mcdi_set_mac(struct efx_nic *efx) 1028 { 1029 u32 fcntl; 1030 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN); 1031 1032 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 1033 1034 /* This has no effect on EF10 */ 1035 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), 1036 efx->net_dev->dev_addr); 1037 1038 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, 1039 EFX_MAX_FRAME_LEN(efx->net_dev->mtu)); 1040 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); 1041 1042 /* Set simple MAC filter for Siena */ 1043 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT, 1044 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter); 1045 1046 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS, 1047 SET_MAC_IN_FLAG_INCLUDE_FCS, 1048 !!(efx->net_dev->features & NETIF_F_RXFCS)); 1049 1050 switch (efx->wanted_fc) { 1051 case EFX_FC_RX | EFX_FC_TX: 1052 fcntl = MC_CMD_FCNTL_BIDIR; 1053 break; 1054 case EFX_FC_RX: 1055 fcntl = MC_CMD_FCNTL_RESPOND; 1056 break; 1057 default: 1058 fcntl = MC_CMD_FCNTL_OFF; 1059 break; 1060 } 1061 if (efx->wanted_fc & EFX_FC_AUTO) 1062 fcntl = MC_CMD_FCNTL_AUTO; 1063 if (efx->fc_disable) 1064 fcntl = MC_CMD_FCNTL_OFF; 1065 1066 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); 1067 1068 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), 1069 NULL, 0, NULL); 1070 } 1071 1072 bool efx_mcdi_mac_check_fault(struct efx_nic *efx) 1073 { 1074 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 1075 size_t outlength; 1076 int rc; 1077 1078 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 1079 1080 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 1081 outbuf, sizeof(outbuf), &outlength); 1082 if (rc) 1083 return true; 1084 1085 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; 1086 } 1087 1088 enum efx_stats_action { 1089 EFX_STATS_ENABLE, 1090 EFX_STATS_DISABLE, 1091 EFX_STATS_PULL, 1092 }; 1093 1094 static int efx_mcdi_mac_stats(struct efx_nic *efx, 1095 enum efx_stats_action action, int clear) 1096 { 1097 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); 1098 int rc; 1099 int change = action == EFX_STATS_PULL ? 0 : 1; 1100 int enable = action == EFX_STATS_ENABLE ? 1 : 0; 1101 int period = action == EFX_STATS_ENABLE ? 1000 : 0; 1102 dma_addr_t dma_addr = efx->stats_buffer.dma_addr; 1103 u32 dma_len = action != EFX_STATS_DISABLE ? 1104 efx->num_mac_stats * sizeof(u64) : 0; 1105 1106 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); 1107 1108 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr); 1109 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, 1110 MAC_STATS_IN_DMA, !!enable, 1111 MAC_STATS_IN_CLEAR, clear, 1112 MAC_STATS_IN_PERIODIC_CHANGE, change, 1113 MAC_STATS_IN_PERIODIC_ENABLE, enable, 1114 MAC_STATS_IN_PERIODIC_CLEAR, 0, 1115 MAC_STATS_IN_PERIODIC_NOEVENT, 1, 1116 MAC_STATS_IN_PERIOD_MS, period); 1117 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); 1118 1119 if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) { 1120 struct efx_ef10_nic_data *nic_data = efx->nic_data; 1121 1122 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id); 1123 } 1124 1125 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), 1126 NULL, 0, NULL); 1127 /* Expect ENOENT if DMA queues have not been set up */ 1128 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues))) 1129 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf), 1130 NULL, 0, rc); 1131 return rc; 1132 } 1133 1134 void efx_mcdi_mac_start_stats(struct efx_nic *efx) 1135 { 1136 __le64 *dma_stats = efx->stats_buffer.addr; 1137 1138 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1139 1140 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); 1141 } 1142 1143 void efx_mcdi_mac_stop_stats(struct efx_nic *efx) 1144 { 1145 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); 1146 } 1147 1148 #define EFX_MAC_STATS_WAIT_US 100 1149 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10 1150 1151 void efx_mcdi_mac_pull_stats(struct efx_nic *efx) 1152 { 1153 __le64 *dma_stats = efx->stats_buffer.addr; 1154 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; 1155 1156 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1157 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); 1158 1159 while (dma_stats[efx->num_mac_stats - 1] == 1160 EFX_MC_STATS_GENERATION_INVALID && 1161 attempts-- != 0) 1162 udelay(EFX_MAC_STATS_WAIT_US); 1163 } 1164 1165 int efx_mcdi_port_probe(struct efx_nic *efx) 1166 { 1167 int rc; 1168 1169 /* Hook in PHY operations table */ 1170 efx->phy_op = &efx_mcdi_phy_ops; 1171 1172 /* Set up MDIO structure for PHY */ 1173 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 1174 efx->mdio.mdio_read = efx_mcdi_mdio_read; 1175 efx->mdio.mdio_write = efx_mcdi_mdio_write; 1176 1177 /* Fill out MDIO structure, loopback modes, and initial link state */ 1178 rc = efx->phy_op->probe(efx); 1179 if (rc != 0) 1180 return rc; 1181 1182 /* Allocate buffer for stats */ 1183 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, 1184 efx->num_mac_stats * sizeof(u64), GFP_KERNEL); 1185 if (rc) 1186 return rc; 1187 netif_dbg(efx, probe, efx->net_dev, 1188 "stats buffer at %llx (virt %p phys %llx)\n", 1189 (u64)efx->stats_buffer.dma_addr, 1190 efx->stats_buffer.addr, 1191 (u64)virt_to_phys(efx->stats_buffer.addr)); 1192 1193 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1); 1194 1195 return 0; 1196 } 1197 1198 void efx_mcdi_port_remove(struct efx_nic *efx) 1199 { 1200 efx->phy_op->remove(efx); 1201 efx_nic_free_buffer(efx, &efx->stats_buffer); 1202 } 1203 1204 /* Get physical port number (EF10 only; on Siena it is same as PF number) */ 1205 int efx_mcdi_port_get_number(struct efx_nic *efx) 1206 { 1207 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN); 1208 int rc; 1209 1210 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0, 1211 outbuf, sizeof(outbuf), NULL); 1212 if (rc) 1213 return rc; 1214 1215 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT); 1216 } 1217