1 // SPDX-License-Identifier: GPL-2.0-only 2 /**************************************************************************** 3 * Driver for Solarflare network controllers and boards 4 * Copyright 2009-2013 Solarflare Communications Inc. 5 */ 6 7 /* 8 * Driver for PHY related operations via MCDI. 9 */ 10 11 #include <linux/slab.h> 12 #include "efx.h" 13 #include "mcdi.h" 14 #include "mcdi_pcol.h" 15 #include "nic.h" 16 #include "selftest.h" 17 18 struct efx_mcdi_phy_data { 19 u32 flags; 20 u32 type; 21 u32 supported_cap; 22 u32 channel; 23 u32 port; 24 u32 stats_mask; 25 u8 name[20]; 26 u32 media; 27 u32 mmd_mask; 28 u8 revision[20]; 29 u32 forced_cap; 30 }; 31 32 static int 33 efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg) 34 { 35 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN); 36 size_t outlen; 37 int rc; 38 39 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0); 40 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name)); 41 42 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0, 43 outbuf, sizeof(outbuf), &outlen); 44 if (rc) 45 goto fail; 46 47 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) { 48 rc = -EIO; 49 goto fail; 50 } 51 52 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS); 53 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE); 54 cfg->supported_cap = 55 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP); 56 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL); 57 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT); 58 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK); 59 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME), 60 sizeof(cfg->name)); 61 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE); 62 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK); 63 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION), 64 sizeof(cfg->revision)); 65 66 return 0; 67 68 fail: 69 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 70 return rc; 71 } 72 73 static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities, 74 u32 flags, u32 loopback_mode, 75 u32 loopback_speed) 76 { 77 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN); 78 int rc; 79 80 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); 81 82 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); 83 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); 84 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); 85 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); 86 87 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), 88 NULL, 0, NULL); 89 return rc; 90 } 91 92 static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) 93 { 94 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN); 95 size_t outlen; 96 int rc; 97 98 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, 99 outbuf, sizeof(outbuf), &outlen); 100 if (rc) 101 goto fail; 102 103 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST + 104 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) { 105 rc = -EIO; 106 goto fail; 107 } 108 109 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED); 110 111 return 0; 112 113 fail: 114 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); 115 return rc; 116 } 117 118 static int efx_mcdi_mdio_read(struct net_device *net_dev, 119 int prtad, int devad, u16 addr) 120 { 121 struct efx_nic *efx = netdev_priv(net_dev); 122 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN); 123 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN); 124 size_t outlen; 125 int rc; 126 127 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus); 128 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad); 129 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad); 130 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr); 131 132 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf), 133 outbuf, sizeof(outbuf), &outlen); 134 if (rc) 135 return rc; 136 137 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) != 138 MC_CMD_MDIO_STATUS_GOOD) 139 return -EIO; 140 141 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); 142 } 143 144 static int efx_mcdi_mdio_write(struct net_device *net_dev, 145 int prtad, int devad, u16 addr, u16 value) 146 { 147 struct efx_nic *efx = netdev_priv(net_dev); 148 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN); 149 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN); 150 size_t outlen; 151 int rc; 152 153 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus); 154 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad); 155 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad); 156 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr); 157 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value); 158 159 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf), 160 outbuf, sizeof(outbuf), &outlen); 161 if (rc) 162 return rc; 163 164 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) != 165 MC_CMD_MDIO_STATUS_GOOD) 166 return -EIO; 167 168 return 0; 169 } 170 171 static void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset) 172 { 173 #define SET_BIT(name) __set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ 174 linkset) 175 176 bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS); 177 switch (media) { 178 case MC_CMD_MEDIA_KX4: 179 SET_BIT(Backplane); 180 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 181 SET_BIT(1000baseKX_Full); 182 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 183 SET_BIT(10000baseKX4_Full); 184 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) 185 SET_BIT(40000baseKR4_Full); 186 break; 187 188 case MC_CMD_MEDIA_XFP: 189 case MC_CMD_MEDIA_SFP_PLUS: 190 case MC_CMD_MEDIA_QSFP_PLUS: 191 SET_BIT(FIBRE); 192 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 193 SET_BIT(1000baseT_Full); 194 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 195 SET_BIT(10000baseT_Full); 196 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) 197 SET_BIT(40000baseCR4_Full); 198 if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN)) 199 SET_BIT(100000baseCR4_Full); 200 if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN)) 201 SET_BIT(25000baseCR_Full); 202 if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN)) 203 SET_BIT(50000baseCR2_Full); 204 break; 205 206 case MC_CMD_MEDIA_BASE_T: 207 SET_BIT(TP); 208 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) 209 SET_BIT(10baseT_Half); 210 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) 211 SET_BIT(10baseT_Full); 212 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) 213 SET_BIT(100baseT_Half); 214 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) 215 SET_BIT(100baseT_Full); 216 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) 217 SET_BIT(1000baseT_Half); 218 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) 219 SET_BIT(1000baseT_Full); 220 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) 221 SET_BIT(10000baseT_Full); 222 break; 223 } 224 225 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 226 SET_BIT(Pause); 227 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 228 SET_BIT(Asym_Pause); 229 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 230 SET_BIT(Autoneg); 231 232 #undef SET_BIT 233 } 234 235 static u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset) 236 { 237 u32 result = 0; 238 239 #define TEST_BIT(name) test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \ 240 linkset) 241 242 if (TEST_BIT(10baseT_Half)) 243 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); 244 if (TEST_BIT(10baseT_Full)) 245 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); 246 if (TEST_BIT(100baseT_Half)) 247 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); 248 if (TEST_BIT(100baseT_Full)) 249 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); 250 if (TEST_BIT(1000baseT_Half)) 251 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); 252 if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full)) 253 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); 254 if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full)) 255 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); 256 if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full)) 257 result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN); 258 if (TEST_BIT(100000baseCR4_Full)) 259 result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN); 260 if (TEST_BIT(25000baseCR_Full)) 261 result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN); 262 if (TEST_BIT(50000baseCR2_Full)) 263 result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN); 264 if (TEST_BIT(Pause)) 265 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); 266 if (TEST_BIT(Asym_Pause)) 267 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); 268 if (TEST_BIT(Autoneg)) 269 result |= (1 << MC_CMD_PHY_CAP_AN_LBN); 270 271 #undef TEST_BIT 272 273 return result; 274 } 275 276 static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) 277 { 278 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 279 enum efx_phy_mode mode, supported; 280 u32 flags; 281 282 /* TODO: Advertise the capabilities supported by this PHY */ 283 supported = 0; 284 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN)) 285 supported |= PHY_MODE_TX_DISABLED; 286 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN)) 287 supported |= PHY_MODE_LOW_POWER; 288 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN)) 289 supported |= PHY_MODE_OFF; 290 291 mode = efx->phy_mode & supported; 292 293 flags = 0; 294 if (mode & PHY_MODE_TX_DISABLED) 295 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN); 296 if (mode & PHY_MODE_LOW_POWER) 297 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN); 298 if (mode & PHY_MODE_OFF) 299 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN); 300 301 return flags; 302 } 303 304 static u8 mcdi_to_ethtool_media(u32 media) 305 { 306 switch (media) { 307 case MC_CMD_MEDIA_XAUI: 308 case MC_CMD_MEDIA_CX4: 309 case MC_CMD_MEDIA_KX4: 310 return PORT_OTHER; 311 312 case MC_CMD_MEDIA_XFP: 313 case MC_CMD_MEDIA_SFP_PLUS: 314 case MC_CMD_MEDIA_QSFP_PLUS: 315 return PORT_FIBRE; 316 317 case MC_CMD_MEDIA_BASE_T: 318 return PORT_TP; 319 320 default: 321 return PORT_OTHER; 322 } 323 } 324 325 static void efx_mcdi_phy_decode_link(struct efx_nic *efx, 326 struct efx_link_state *link_state, 327 u32 speed, u32 flags, u32 fcntl) 328 { 329 switch (fcntl) { 330 case MC_CMD_FCNTL_AUTO: 331 WARN_ON(1); /* This is not a link mode */ 332 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; 333 break; 334 case MC_CMD_FCNTL_BIDIR: 335 link_state->fc = EFX_FC_TX | EFX_FC_RX; 336 break; 337 case MC_CMD_FCNTL_RESPOND: 338 link_state->fc = EFX_FC_RX; 339 break; 340 default: 341 WARN_ON(1); 342 /* Fall through */ 343 case MC_CMD_FCNTL_OFF: 344 link_state->fc = 0; 345 break; 346 } 347 348 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN)); 349 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN)); 350 link_state->speed = speed; 351 } 352 353 /* The semantics of the ethtool FEC mode bitmask are not well defined, 354 * particularly the meaning of combinations of bits. Which means we get to 355 * define our own semantics, as follows: 356 * OFF overrides any other bits, and means "disable all FEC" (with the 357 * exception of 25G KR4/CR4, where it is not possible to reject it if AN 358 * partner requests it). 359 * AUTO on its own means use cable requirements and link partner autoneg with 360 * fw-default preferences for the cable type. 361 * AUTO and either RS or BASER means use the specified FEC type if cable and 362 * link partner support it, otherwise autoneg/fw-default. 363 * RS or BASER alone means use the specified FEC type if cable and link partner 364 * support it and either requests it, otherwise no FEC. 365 * Both RS and BASER (whether AUTO or not) means use FEC if cable and link 366 * partner support it, preferring RS to BASER. 367 */ 368 static u32 ethtool_fec_caps_to_mcdi(u32 ethtool_cap) 369 { 370 u32 ret = 0; 371 372 if (ethtool_cap & ETHTOOL_FEC_OFF) 373 return 0; 374 375 if (ethtool_cap & ETHTOOL_FEC_AUTO) 376 ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | 377 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | 378 (1 << MC_CMD_PHY_CAP_RS_FEC_LBN); 379 if (ethtool_cap & ETHTOOL_FEC_RS) 380 ret |= (1 << MC_CMD_PHY_CAP_RS_FEC_LBN) | 381 (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN); 382 if (ethtool_cap & ETHTOOL_FEC_BASER) 383 ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | 384 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | 385 (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN) | 386 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN); 387 return ret; 388 } 389 390 /* Invert ethtool_fec_caps_to_mcdi. There are two combinations that function 391 * can never produce, (baser xor rs) and neither req; the implementation below 392 * maps both of those to AUTO. This should never matter, and it's not clear 393 * what a better mapping would be anyway. 394 */ 395 static u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g) 396 { 397 bool rs = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN), 398 rs_req = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN), 399 baser = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) 400 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN), 401 baser_req = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN) 402 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN); 403 404 if (!baser && !rs) 405 return ETHTOOL_FEC_OFF; 406 return (rs_req ? ETHTOOL_FEC_RS : 0) | 407 (baser_req ? ETHTOOL_FEC_BASER : 0) | 408 (baser == baser_req && rs == rs_req ? 0 : ETHTOOL_FEC_AUTO); 409 } 410 411 static int efx_mcdi_phy_probe(struct efx_nic *efx) 412 { 413 struct efx_mcdi_phy_data *phy_data; 414 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 415 u32 caps; 416 int rc; 417 418 /* Initialise and populate phy_data */ 419 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); 420 if (phy_data == NULL) 421 return -ENOMEM; 422 423 rc = efx_mcdi_get_phy_cfg(efx, phy_data); 424 if (rc != 0) 425 goto fail; 426 427 /* Read initial link advertisement */ 428 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 429 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 430 outbuf, sizeof(outbuf), NULL); 431 if (rc) 432 goto fail; 433 434 /* Fill out nic state */ 435 efx->phy_data = phy_data; 436 efx->phy_type = phy_data->type; 437 438 efx->mdio_bus = phy_data->channel; 439 efx->mdio.prtad = phy_data->port; 440 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); 441 efx->mdio.mode_support = 0; 442 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) 443 efx->mdio.mode_support |= MDIO_SUPPORTS_C22; 444 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) 445 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 446 447 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); 448 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) 449 mcdi_to_ethtool_linkset(phy_data->media, caps, 450 efx->link_advertising); 451 else 452 phy_data->forced_cap = caps; 453 454 /* Assert that we can map efx -> mcdi loopback modes */ 455 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); 456 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); 457 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); 458 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); 459 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); 460 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); 461 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); 462 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); 463 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); 464 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); 465 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); 466 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); 467 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); 468 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); 469 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); 470 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); 471 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); 472 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); 473 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); 474 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); 475 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); 476 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); 477 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); 478 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); 479 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); 480 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); 481 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); 482 483 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); 484 if (rc != 0) 485 goto fail; 486 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, 487 * but by convention we don't */ 488 efx->loopback_modes &= ~(1 << LOOPBACK_NONE); 489 490 /* Set the initial link mode */ 491 efx_mcdi_phy_decode_link( 492 efx, &efx->link_state, 493 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 494 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 495 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 496 497 /* Record the initial FEC configuration (or nearest approximation 498 * representable in the ethtool configuration space) 499 */ 500 efx->fec_config = mcdi_fec_caps_to_ethtool(caps, 501 efx->link_state.speed == 25000 || 502 efx->link_state.speed == 50000); 503 504 /* Default to Autonegotiated flow control if the PHY supports it */ 505 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; 506 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 507 efx->wanted_fc |= EFX_FC_AUTO; 508 efx_link_set_wanted_fc(efx, efx->wanted_fc); 509 510 return 0; 511 512 fail: 513 kfree(phy_data); 514 return rc; 515 } 516 517 int efx_mcdi_port_reconfigure(struct efx_nic *efx) 518 { 519 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 520 u32 caps = (efx->link_advertising[0] ? 521 ethtool_linkset_to_mcdi_cap(efx->link_advertising) : 522 phy_cfg->forced_cap); 523 524 caps |= ethtool_fec_caps_to_mcdi(efx->fec_config); 525 526 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 527 efx->loopback_mode, 0); 528 } 529 530 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are 531 * supported by the link partner. Warn the user if this isn't the case 532 */ 533 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) 534 { 535 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 536 u32 rmtadv; 537 538 /* The link partner capabilities are only relevant if the 539 * link supports flow control autonegotiation */ 540 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 541 return; 542 543 /* If flow control autoneg is supported and enabled, then fine */ 544 if (efx->wanted_fc & EFX_FC_AUTO) 545 return; 546 547 rmtadv = 0; 548 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 549 rmtadv |= ADVERTISED_Pause; 550 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 551 rmtadv |= ADVERTISED_Asym_Pause; 552 553 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) 554 netif_err(efx, link, efx->net_dev, 555 "warning: link partner doesn't support pause frames"); 556 } 557 558 static bool efx_mcdi_phy_poll(struct efx_nic *efx) 559 { 560 struct efx_link_state old_state = efx->link_state; 561 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 562 int rc; 563 564 WARN_ON(!mutex_is_locked(&efx->mac_lock)); 565 566 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 567 568 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 569 outbuf, sizeof(outbuf), NULL); 570 if (rc) 571 efx->link_state.up = false; 572 else 573 efx_mcdi_phy_decode_link( 574 efx, &efx->link_state, 575 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 576 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 577 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 578 579 return !efx_link_state_equal(&efx->link_state, &old_state); 580 } 581 582 static void efx_mcdi_phy_remove(struct efx_nic *efx) 583 { 584 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 585 586 efx->phy_data = NULL; 587 kfree(phy_data); 588 } 589 590 static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, 591 struct ethtool_link_ksettings *cmd) 592 { 593 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 594 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 595 int rc; 596 597 cmd->base.speed = efx->link_state.speed; 598 cmd->base.duplex = efx->link_state.fd; 599 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media); 600 cmd->base.phy_address = phy_cfg->port; 601 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg); 602 cmd->base.mdio_support = (efx->mdio.mode_support & 603 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); 604 605 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap, 606 cmd->link_modes.supported); 607 memcpy(cmd->link_modes.advertising, efx->link_advertising, 608 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK())); 609 610 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 611 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 612 outbuf, sizeof(outbuf), NULL); 613 if (rc) 614 return; 615 mcdi_to_ethtool_linkset(phy_cfg->media, 616 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP), 617 cmd->link_modes.lp_advertising); 618 } 619 620 static int 621 efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, 622 const struct ethtool_link_ksettings *cmd) 623 { 624 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 625 u32 caps; 626 int rc; 627 628 if (cmd->base.autoneg) { 629 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) | 630 1 << MC_CMD_PHY_CAP_AN_LBN); 631 } else if (cmd->base.duplex) { 632 switch (cmd->base.speed) { 633 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; 634 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; 635 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; 636 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; 637 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break; 638 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break; 639 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break; 640 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break; 641 default: return -EINVAL; 642 } 643 } else { 644 switch (cmd->base.speed) { 645 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; 646 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; 647 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; 648 default: return -EINVAL; 649 } 650 } 651 652 caps |= ethtool_fec_caps_to_mcdi(efx->fec_config); 653 654 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 655 efx->loopback_mode, 0); 656 if (rc) 657 return rc; 658 659 if (cmd->base.autoneg) { 660 efx_link_set_advertising(efx, cmd->link_modes.advertising); 661 phy_cfg->forced_cap = 0; 662 } else { 663 efx_link_clear_advertising(efx); 664 phy_cfg->forced_cap = caps; 665 } 666 return 0; 667 } 668 669 static int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, 670 struct ethtool_fecparam *fec) 671 { 672 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_V2_LEN); 673 u32 caps, active, speed; /* MCDI format */ 674 bool is_25g = false; 675 size_t outlen; 676 int rc; 677 678 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 679 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 680 outbuf, sizeof(outbuf), &outlen); 681 if (rc) 682 return rc; 683 if (outlen < MC_CMD_GET_LINK_OUT_V2_LEN) 684 return -EOPNOTSUPP; 685 686 /* behaviour for 25G/50G links depends on 25G BASER bit */ 687 speed = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_LINK_SPEED); 688 is_25g = speed == 25000 || speed == 50000; 689 690 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_CAP); 691 fec->fec = mcdi_fec_caps_to_ethtool(caps, is_25g); 692 /* BASER is never supported on 100G */ 693 if (speed == 100000) 694 fec->fec &= ~ETHTOOL_FEC_BASER; 695 696 active = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_FEC_TYPE); 697 switch (active) { 698 case MC_CMD_FEC_NONE: 699 fec->active_fec = ETHTOOL_FEC_OFF; 700 break; 701 case MC_CMD_FEC_BASER: 702 fec->active_fec = ETHTOOL_FEC_BASER; 703 break; 704 case MC_CMD_FEC_RS: 705 fec->active_fec = ETHTOOL_FEC_RS; 706 break; 707 default: 708 netif_warn(efx, hw, efx->net_dev, 709 "Firmware reports unrecognised FEC_TYPE %u\n", 710 active); 711 /* We don't know what firmware has picked. AUTO is as good a 712 * "can't happen" value as any other. 713 */ 714 fec->active_fec = ETHTOOL_FEC_AUTO; 715 break; 716 } 717 718 return 0; 719 } 720 721 static int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, 722 const struct ethtool_fecparam *fec) 723 { 724 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 725 u32 caps; 726 int rc; 727 728 /* Work out what efx_mcdi_phy_set_link_ksettings() would produce from 729 * saved advertising bits 730 */ 731 if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising)) 732 caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) | 733 1 << MC_CMD_PHY_CAP_AN_LBN); 734 else 735 caps = phy_cfg->forced_cap; 736 737 caps |= ethtool_fec_caps_to_mcdi(fec->fec); 738 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 739 efx->loopback_mode, 0); 740 if (rc) 741 return rc; 742 743 /* Record the new FEC setting for subsequent set_link calls */ 744 efx->fec_config = fec->fec; 745 return 0; 746 } 747 748 static int efx_mcdi_phy_test_alive(struct efx_nic *efx) 749 { 750 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN); 751 size_t outlen; 752 int rc; 753 754 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); 755 756 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, 757 outbuf, sizeof(outbuf), &outlen); 758 if (rc) 759 return rc; 760 761 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) 762 return -EIO; 763 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) 764 return -EINVAL; 765 766 return 0; 767 } 768 769 static const char *const mcdi_sft9001_cable_diag_names[] = { 770 "cable.pairA.length", 771 "cable.pairB.length", 772 "cable.pairC.length", 773 "cable.pairD.length", 774 "cable.pairA.status", 775 "cable.pairB.status", 776 "cable.pairC.status", 777 "cable.pairD.status", 778 }; 779 780 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, 781 int *results) 782 { 783 unsigned int retry, i, count = 0; 784 size_t outlen; 785 u32 status; 786 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN); 787 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN); 788 u8 *ptr; 789 int rc; 790 791 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); 792 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode); 793 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, 794 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL); 795 if (rc) 796 goto out; 797 798 /* Wait up to 10s for BIST to finish */ 799 for (retry = 0; retry < 100; ++retry) { 800 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); 801 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, 802 outbuf, sizeof(outbuf), &outlen); 803 if (rc) 804 goto out; 805 806 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT); 807 if (status != MC_CMD_POLL_BIST_RUNNING) 808 goto finished; 809 810 msleep(100); 811 } 812 813 rc = -ETIMEDOUT; 814 goto out; 815 816 finished: 817 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; 818 819 /* SFT9001 specific cable diagnostics output */ 820 if (efx->phy_type == PHY_TYPE_SFT9001B && 821 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || 822 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { 823 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); 824 if (status == MC_CMD_POLL_BIST_PASSED && 825 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { 826 for (i = 0; i < 8; i++) { 827 results[count + i] = 828 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], 829 EFX_DWORD_0); 830 } 831 } 832 count += 8; 833 } 834 rc = count; 835 836 out: 837 return rc; 838 } 839 840 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, 841 unsigned flags) 842 { 843 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 844 u32 mode; 845 int rc; 846 847 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 848 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); 849 if (rc < 0) 850 return rc; 851 852 results += rc; 853 } 854 855 /* If we support both LONG and SHORT, then run each in response to 856 * break or not. Otherwise, run the one we support */ 857 mode = 0; 858 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { 859 if ((flags & ETH_TEST_FL_OFFLINE) && 860 (phy_cfg->flags & 861 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) 862 mode = MC_CMD_PHY_BIST_CABLE_LONG; 863 else 864 mode = MC_CMD_PHY_BIST_CABLE_SHORT; 865 } else if (phy_cfg->flags & 866 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) 867 mode = MC_CMD_PHY_BIST_CABLE_LONG; 868 869 if (mode != 0) { 870 rc = efx_mcdi_bist(efx, mode, results); 871 if (rc < 0) 872 return rc; 873 results += rc; 874 } 875 876 return 0; 877 } 878 879 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx, 880 unsigned int index) 881 { 882 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 883 884 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 885 if (index == 0) 886 return "bist"; 887 --index; 888 } 889 890 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | 891 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { 892 if (index == 0) 893 return "cable"; 894 --index; 895 896 if (efx->phy_type == PHY_TYPE_SFT9001B) { 897 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) 898 return mcdi_sft9001_cable_diag_names[index]; 899 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); 900 } 901 } 902 903 return NULL; 904 } 905 906 #define SFP_PAGE_SIZE 128 907 #define SFF_DIAG_TYPE_OFFSET 92 908 #define SFF_DIAG_ADDR_CHANGE BIT(2) 909 #define SFF_8079_NUM_PAGES 2 910 #define SFF_8472_NUM_PAGES 4 911 #define SFF_8436_NUM_PAGES 5 912 #define SFF_DMT_LEVEL_OFFSET 94 913 914 /** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom 915 * @efx: NIC context 916 * @page: EEPROM page number 917 * @data: Destination data pointer 918 * @offset: Offset in page to copy from in to data 919 * @space: Space available in data 920 * 921 * Return: 922 * >=0 - amount of data copied 923 * <0 - error 924 */ 925 static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx, 926 unsigned int page, 927 u8 *data, ssize_t offset, 928 ssize_t space) 929 { 930 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX); 931 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN); 932 size_t outlen; 933 unsigned int payload_len; 934 unsigned int to_copy; 935 int rc; 936 937 if (offset > SFP_PAGE_SIZE) 938 return -EINVAL; 939 940 to_copy = min(space, SFP_PAGE_SIZE - offset); 941 942 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); 943 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO, 944 inbuf, sizeof(inbuf), 945 outbuf, sizeof(outbuf), 946 &outlen); 947 948 if (rc) 949 return rc; 950 951 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + 952 SFP_PAGE_SIZE)) 953 return -EIO; 954 955 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN); 956 if (payload_len != SFP_PAGE_SIZE) 957 return -EIO; 958 959 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset, 960 to_copy); 961 962 return to_copy; 963 } 964 965 static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx, 966 unsigned int page, 967 u8 byte) 968 { 969 int rc; 970 u8 data; 971 972 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1); 973 if (rc == 1) 974 return data; 975 976 return rc; 977 } 978 979 static int efx_mcdi_phy_diag_type(struct efx_nic *efx) 980 { 981 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */ 982 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 983 SFF_DIAG_TYPE_OFFSET); 984 } 985 986 static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx) 987 { 988 /* Page zero of the EEPROM includes the DMT level at byte 94. */ 989 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 990 SFF_DMT_LEVEL_OFFSET); 991 } 992 993 static u32 efx_mcdi_phy_module_type(struct efx_nic *efx) 994 { 995 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 996 997 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS) 998 return phy_data->media; 999 1000 /* A QSFP+ NIC may actually have an SFP+ module attached. 1001 * The ID is page 0, byte 0. 1002 */ 1003 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) { 1004 case 0x3: 1005 return MC_CMD_MEDIA_SFP_PLUS; 1006 case 0xc: 1007 case 0xd: 1008 return MC_CMD_MEDIA_QSFP_PLUS; 1009 default: 1010 return 0; 1011 } 1012 } 1013 1014 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, 1015 struct ethtool_eeprom *ee, u8 *data) 1016 { 1017 int rc; 1018 ssize_t space_remaining = ee->len; 1019 unsigned int page_off; 1020 bool ignore_missing; 1021 int num_pages; 1022 int page; 1023 1024 switch (efx_mcdi_phy_module_type(efx)) { 1025 case MC_CMD_MEDIA_SFP_PLUS: 1026 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ? 1027 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES; 1028 page = 0; 1029 ignore_missing = false; 1030 break; 1031 case MC_CMD_MEDIA_QSFP_PLUS: 1032 num_pages = SFF_8436_NUM_PAGES; 1033 page = -1; /* We obtain the lower page by asking for -1. */ 1034 ignore_missing = true; /* Ignore missing pages after page 0. */ 1035 break; 1036 default: 1037 return -EOPNOTSUPP; 1038 } 1039 1040 page_off = ee->offset % SFP_PAGE_SIZE; 1041 page += ee->offset / SFP_PAGE_SIZE; 1042 1043 while (space_remaining && (page < num_pages)) { 1044 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, 1045 data, page_off, 1046 space_remaining); 1047 1048 if (rc > 0) { 1049 space_remaining -= rc; 1050 data += rc; 1051 page_off = 0; 1052 page++; 1053 } else if (rc == 0) { 1054 space_remaining = 0; 1055 } else if (ignore_missing && (page > 0)) { 1056 int intended_size = SFP_PAGE_SIZE - page_off; 1057 1058 space_remaining -= intended_size; 1059 if (space_remaining < 0) { 1060 space_remaining = 0; 1061 } else { 1062 memset(data, 0, intended_size); 1063 data += intended_size; 1064 page_off = 0; 1065 page++; 1066 rc = 0; 1067 } 1068 } else { 1069 return rc; 1070 } 1071 } 1072 1073 return 0; 1074 } 1075 1076 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx, 1077 struct ethtool_modinfo *modinfo) 1078 { 1079 int sff_8472_level; 1080 int diag_type; 1081 1082 switch (efx_mcdi_phy_module_type(efx)) { 1083 case MC_CMD_MEDIA_SFP_PLUS: 1084 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx); 1085 1086 /* If we can't read the diagnostics level we have none. */ 1087 if (sff_8472_level < 0) 1088 return -EOPNOTSUPP; 1089 1090 /* Check if this module requires the (unsupported) address 1091 * change operation. 1092 */ 1093 diag_type = efx_mcdi_phy_diag_type(efx); 1094 1095 if ((sff_8472_level == 0) || 1096 (diag_type & SFF_DIAG_ADDR_CHANGE)) { 1097 modinfo->type = ETH_MODULE_SFF_8079; 1098 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1099 } else { 1100 modinfo->type = ETH_MODULE_SFF_8472; 1101 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1102 } 1103 break; 1104 1105 case MC_CMD_MEDIA_QSFP_PLUS: 1106 modinfo->type = ETH_MODULE_SFF_8436; 1107 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 1108 break; 1109 1110 default: 1111 return -EOPNOTSUPP; 1112 } 1113 1114 return 0; 1115 } 1116 1117 static const struct efx_phy_operations efx_mcdi_phy_ops = { 1118 .probe = efx_mcdi_phy_probe, 1119 .init = efx_port_dummy_op_int, 1120 .reconfigure = efx_mcdi_port_reconfigure, 1121 .poll = efx_mcdi_phy_poll, 1122 .fini = efx_port_dummy_op_void, 1123 .remove = efx_mcdi_phy_remove, 1124 .get_link_ksettings = efx_mcdi_phy_get_link_ksettings, 1125 .set_link_ksettings = efx_mcdi_phy_set_link_ksettings, 1126 .get_fecparam = efx_mcdi_phy_get_fecparam, 1127 .set_fecparam = efx_mcdi_phy_set_fecparam, 1128 .test_alive = efx_mcdi_phy_test_alive, 1129 .run_tests = efx_mcdi_phy_run_tests, 1130 .test_name = efx_mcdi_phy_test_name, 1131 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom, 1132 .get_module_info = efx_mcdi_phy_get_module_info, 1133 }; 1134 1135 u32 efx_mcdi_phy_get_caps(struct efx_nic *efx) 1136 { 1137 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 1138 1139 return phy_data->supported_cap; 1140 } 1141 1142 static unsigned int efx_mcdi_event_link_speed[] = { 1143 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, 1144 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, 1145 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, 1146 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000, 1147 [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000, 1148 [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000, 1149 [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000, 1150 }; 1151 1152 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) 1153 { 1154 u32 flags, fcntl, speed, lpa; 1155 1156 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); 1157 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); 1158 speed = efx_mcdi_event_link_speed[speed]; 1159 1160 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); 1161 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); 1162 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); 1163 1164 /* efx->link_state is only modified by efx_mcdi_phy_get_link(), 1165 * which is only run after flushing the event queues. Therefore, it 1166 * is safe to modify the link state outside of the mac_lock here. 1167 */ 1168 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); 1169 1170 efx_mcdi_phy_check_fcntl(efx, lpa); 1171 1172 efx_link_status_changed(efx); 1173 } 1174 1175 int efx_mcdi_set_mac(struct efx_nic *efx) 1176 { 1177 u32 fcntl; 1178 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN); 1179 1180 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 1181 1182 /* This has no effect on EF10 */ 1183 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), 1184 efx->net_dev->dev_addr); 1185 1186 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, 1187 EFX_MAX_FRAME_LEN(efx->net_dev->mtu)); 1188 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); 1189 1190 /* Set simple MAC filter for Siena */ 1191 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT, 1192 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter); 1193 1194 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS, 1195 SET_MAC_IN_FLAG_INCLUDE_FCS, 1196 !!(efx->net_dev->features & NETIF_F_RXFCS)); 1197 1198 switch (efx->wanted_fc) { 1199 case EFX_FC_RX | EFX_FC_TX: 1200 fcntl = MC_CMD_FCNTL_BIDIR; 1201 break; 1202 case EFX_FC_RX: 1203 fcntl = MC_CMD_FCNTL_RESPOND; 1204 break; 1205 default: 1206 fcntl = MC_CMD_FCNTL_OFF; 1207 break; 1208 } 1209 if (efx->wanted_fc & EFX_FC_AUTO) 1210 fcntl = MC_CMD_FCNTL_AUTO; 1211 if (efx->fc_disable) 1212 fcntl = MC_CMD_FCNTL_OFF; 1213 1214 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); 1215 1216 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), 1217 NULL, 0, NULL); 1218 } 1219 1220 bool efx_mcdi_mac_check_fault(struct efx_nic *efx) 1221 { 1222 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 1223 size_t outlength; 1224 int rc; 1225 1226 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 1227 1228 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 1229 outbuf, sizeof(outbuf), &outlength); 1230 if (rc) 1231 return true; 1232 1233 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; 1234 } 1235 1236 enum efx_stats_action { 1237 EFX_STATS_ENABLE, 1238 EFX_STATS_DISABLE, 1239 EFX_STATS_PULL, 1240 }; 1241 1242 static int efx_mcdi_mac_stats(struct efx_nic *efx, 1243 enum efx_stats_action action, int clear) 1244 { 1245 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); 1246 int rc; 1247 int change = action == EFX_STATS_PULL ? 0 : 1; 1248 int enable = action == EFX_STATS_ENABLE ? 1 : 0; 1249 int period = action == EFX_STATS_ENABLE ? 1000 : 0; 1250 dma_addr_t dma_addr = efx->stats_buffer.dma_addr; 1251 u32 dma_len = action != EFX_STATS_DISABLE ? 1252 efx->num_mac_stats * sizeof(u64) : 0; 1253 1254 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); 1255 1256 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr); 1257 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, 1258 MAC_STATS_IN_DMA, !!enable, 1259 MAC_STATS_IN_CLEAR, clear, 1260 MAC_STATS_IN_PERIODIC_CHANGE, change, 1261 MAC_STATS_IN_PERIODIC_ENABLE, enable, 1262 MAC_STATS_IN_PERIODIC_CLEAR, 0, 1263 MAC_STATS_IN_PERIODIC_NOEVENT, 1, 1264 MAC_STATS_IN_PERIOD_MS, period); 1265 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); 1266 1267 if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) { 1268 struct efx_ef10_nic_data *nic_data = efx->nic_data; 1269 1270 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id); 1271 } 1272 1273 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), 1274 NULL, 0, NULL); 1275 /* Expect ENOENT if DMA queues have not been set up */ 1276 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues))) 1277 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf), 1278 NULL, 0, rc); 1279 return rc; 1280 } 1281 1282 void efx_mcdi_mac_start_stats(struct efx_nic *efx) 1283 { 1284 __le64 *dma_stats = efx->stats_buffer.addr; 1285 1286 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1287 1288 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); 1289 } 1290 1291 void efx_mcdi_mac_stop_stats(struct efx_nic *efx) 1292 { 1293 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); 1294 } 1295 1296 #define EFX_MAC_STATS_WAIT_US 100 1297 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10 1298 1299 void efx_mcdi_mac_pull_stats(struct efx_nic *efx) 1300 { 1301 __le64 *dma_stats = efx->stats_buffer.addr; 1302 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; 1303 1304 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1305 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); 1306 1307 while (dma_stats[efx->num_mac_stats - 1] == 1308 EFX_MC_STATS_GENERATION_INVALID && 1309 attempts-- != 0) 1310 udelay(EFX_MAC_STATS_WAIT_US); 1311 } 1312 1313 int efx_mcdi_port_probe(struct efx_nic *efx) 1314 { 1315 int rc; 1316 1317 /* Hook in PHY operations table */ 1318 efx->phy_op = &efx_mcdi_phy_ops; 1319 1320 /* Set up MDIO structure for PHY */ 1321 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 1322 efx->mdio.mdio_read = efx_mcdi_mdio_read; 1323 efx->mdio.mdio_write = efx_mcdi_mdio_write; 1324 1325 /* Fill out MDIO structure, loopback modes, and initial link state */ 1326 rc = efx->phy_op->probe(efx); 1327 if (rc != 0) 1328 return rc; 1329 1330 /* Allocate buffer for stats */ 1331 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, 1332 efx->num_mac_stats * sizeof(u64), GFP_KERNEL); 1333 if (rc) 1334 return rc; 1335 netif_dbg(efx, probe, efx->net_dev, 1336 "stats buffer at %llx (virt %p phys %llx)\n", 1337 (u64)efx->stats_buffer.dma_addr, 1338 efx->stats_buffer.addr, 1339 (u64)virt_to_phys(efx->stats_buffer.addr)); 1340 1341 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1); 1342 1343 return 0; 1344 } 1345 1346 void efx_mcdi_port_remove(struct efx_nic *efx) 1347 { 1348 efx->phy_op->remove(efx); 1349 efx_nic_free_buffer(efx, &efx->stats_buffer); 1350 } 1351 1352 /* Get physical port number (EF10 only; on Siena it is same as PF number) */ 1353 int efx_mcdi_port_get_number(struct efx_nic *efx) 1354 { 1355 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN); 1356 int rc; 1357 1358 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0, 1359 outbuf, sizeof(outbuf), NULL); 1360 if (rc) 1361 return rc; 1362 1363 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT); 1364 } 1365