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 /* Fall through */ 346 case MC_CMD_FCNTL_OFF: 347 link_state->fc = 0; 348 break; 349 } 350 351 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN)); 352 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN)); 353 link_state->speed = speed; 354 } 355 356 /* The semantics of the ethtool FEC mode bitmask are not well defined, 357 * particularly the meaning of combinations of bits. Which means we get to 358 * define our own semantics, as follows: 359 * OFF overrides any other bits, and means "disable all FEC" (with the 360 * exception of 25G KR4/CR4, where it is not possible to reject it if AN 361 * partner requests it). 362 * AUTO on its own means use cable requirements and link partner autoneg with 363 * fw-default preferences for the cable type. 364 * AUTO and either RS or BASER means use the specified FEC type if cable and 365 * link partner support it, otherwise autoneg/fw-default. 366 * RS or BASER alone means use the specified FEC type if cable and link partner 367 * support it and either requests it, otherwise no FEC. 368 * Both RS and BASER (whether AUTO or not) means use FEC if cable and link 369 * partner support it, preferring RS to BASER. 370 */ 371 static u32 ethtool_fec_caps_to_mcdi(u32 ethtool_cap) 372 { 373 u32 ret = 0; 374 375 if (ethtool_cap & ETHTOOL_FEC_OFF) 376 return 0; 377 378 if (ethtool_cap & ETHTOOL_FEC_AUTO) 379 ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | 380 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | 381 (1 << MC_CMD_PHY_CAP_RS_FEC_LBN); 382 if (ethtool_cap & ETHTOOL_FEC_RS) 383 ret |= (1 << MC_CMD_PHY_CAP_RS_FEC_LBN) | 384 (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN); 385 if (ethtool_cap & ETHTOOL_FEC_BASER) 386 ret |= (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN) | 387 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) | 388 (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN) | 389 (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN); 390 return ret; 391 } 392 393 /* Invert ethtool_fec_caps_to_mcdi. There are two combinations that function 394 * can never produce, (baser xor rs) and neither req; the implementation below 395 * maps both of those to AUTO. This should never matter, and it's not clear 396 * what a better mapping would be anyway. 397 */ 398 static u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g) 399 { 400 bool rs = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_LBN), 401 rs_req = caps & (1 << MC_CMD_PHY_CAP_RS_FEC_REQUESTED_LBN), 402 baser = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_LBN) 403 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_LBN), 404 baser_req = is_25g ? caps & (1 << MC_CMD_PHY_CAP_25G_BASER_FEC_REQUESTED_LBN) 405 : caps & (1 << MC_CMD_PHY_CAP_BASER_FEC_REQUESTED_LBN); 406 407 if (!baser && !rs) 408 return ETHTOOL_FEC_OFF; 409 return (rs_req ? ETHTOOL_FEC_RS : 0) | 410 (baser_req ? ETHTOOL_FEC_BASER : 0) | 411 (baser == baser_req && rs == rs_req ? 0 : ETHTOOL_FEC_AUTO); 412 } 413 414 static int efx_mcdi_phy_probe(struct efx_nic *efx) 415 { 416 struct efx_mcdi_phy_data *phy_data; 417 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 418 u32 caps; 419 int rc; 420 421 /* Initialise and populate phy_data */ 422 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); 423 if (phy_data == NULL) 424 return -ENOMEM; 425 426 rc = efx_mcdi_get_phy_cfg(efx, phy_data); 427 if (rc != 0) 428 goto fail; 429 430 /* Read initial link advertisement */ 431 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 432 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 433 outbuf, sizeof(outbuf), NULL); 434 if (rc) 435 goto fail; 436 437 /* Fill out nic state */ 438 efx->phy_data = phy_data; 439 efx->phy_type = phy_data->type; 440 441 efx->mdio_bus = phy_data->channel; 442 efx->mdio.prtad = phy_data->port; 443 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); 444 efx->mdio.mode_support = 0; 445 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) 446 efx->mdio.mode_support |= MDIO_SUPPORTS_C22; 447 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) 448 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 449 450 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); 451 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) 452 mcdi_to_ethtool_linkset(phy_data->media, caps, 453 efx->link_advertising); 454 else 455 phy_data->forced_cap = caps; 456 457 /* Assert that we can map efx -> mcdi loopback modes */ 458 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); 459 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); 460 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); 461 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); 462 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); 463 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); 464 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); 465 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); 466 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); 467 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); 468 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); 469 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); 470 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); 471 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); 472 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); 473 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); 474 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); 475 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); 476 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); 477 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); 478 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); 479 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); 480 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); 481 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); 482 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); 483 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); 484 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); 485 486 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); 487 if (rc != 0) 488 goto fail; 489 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, 490 * but by convention we don't */ 491 efx->loopback_modes &= ~(1 << LOOPBACK_NONE); 492 493 /* Set the initial link mode */ 494 efx_mcdi_phy_decode_link( 495 efx, &efx->link_state, 496 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 497 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 498 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 499 500 /* Record the initial FEC configuration (or nearest approximation 501 * representable in the ethtool configuration space) 502 */ 503 efx->fec_config = mcdi_fec_caps_to_ethtool(caps, 504 efx->link_state.speed == 25000 || 505 efx->link_state.speed == 50000); 506 507 /* Default to Autonegotiated flow control if the PHY supports it */ 508 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; 509 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 510 efx->wanted_fc |= EFX_FC_AUTO; 511 efx_link_set_wanted_fc(efx, efx->wanted_fc); 512 513 return 0; 514 515 fail: 516 kfree(phy_data); 517 return rc; 518 } 519 520 int efx_mcdi_port_reconfigure(struct efx_nic *efx) 521 { 522 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 523 u32 caps = (efx->link_advertising[0] ? 524 ethtool_linkset_to_mcdi_cap(efx->link_advertising) : 525 phy_cfg->forced_cap); 526 527 caps |= ethtool_fec_caps_to_mcdi(efx->fec_config); 528 529 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 530 efx->loopback_mode, 0); 531 } 532 533 /* Verify that the forced flow control settings (!EFX_FC_AUTO) are 534 * supported by the link partner. Warn the user if this isn't the case 535 */ 536 static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) 537 { 538 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 539 u32 rmtadv; 540 541 /* The link partner capabilities are only relevant if the 542 * link supports flow control autonegotiation */ 543 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) 544 return; 545 546 /* If flow control autoneg is supported and enabled, then fine */ 547 if (efx->wanted_fc & EFX_FC_AUTO) 548 return; 549 550 rmtadv = 0; 551 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) 552 rmtadv |= ADVERTISED_Pause; 553 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) 554 rmtadv |= ADVERTISED_Asym_Pause; 555 556 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) 557 netif_err(efx, link, efx->net_dev, 558 "warning: link partner doesn't support pause frames"); 559 } 560 561 static bool efx_mcdi_phy_poll(struct efx_nic *efx) 562 { 563 struct efx_link_state old_state = efx->link_state; 564 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 565 int rc; 566 567 WARN_ON(!mutex_is_locked(&efx->mac_lock)); 568 569 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 570 571 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 572 outbuf, sizeof(outbuf), NULL); 573 if (rc) 574 efx->link_state.up = false; 575 else 576 efx_mcdi_phy_decode_link( 577 efx, &efx->link_state, 578 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), 579 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), 580 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); 581 582 return !efx_link_state_equal(&efx->link_state, &old_state); 583 } 584 585 static void efx_mcdi_phy_remove(struct efx_nic *efx) 586 { 587 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 588 589 efx->phy_data = NULL; 590 kfree(phy_data); 591 } 592 593 static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, 594 struct ethtool_link_ksettings *cmd) 595 { 596 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 597 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 598 int rc; 599 600 cmd->base.speed = efx->link_state.speed; 601 cmd->base.duplex = efx->link_state.fd; 602 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media); 603 cmd->base.phy_address = phy_cfg->port; 604 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg); 605 cmd->base.mdio_support = (efx->mdio.mode_support & 606 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); 607 608 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap, 609 cmd->link_modes.supported); 610 memcpy(cmd->link_modes.advertising, efx->link_advertising, 611 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK())); 612 613 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 614 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 615 outbuf, sizeof(outbuf), NULL); 616 if (rc) 617 return; 618 mcdi_to_ethtool_linkset(phy_cfg->media, 619 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP), 620 cmd->link_modes.lp_advertising); 621 } 622 623 static int 624 efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, 625 const struct ethtool_link_ksettings *cmd) 626 { 627 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 628 u32 caps; 629 int rc; 630 631 if (cmd->base.autoneg) { 632 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) | 633 1 << MC_CMD_PHY_CAP_AN_LBN); 634 } else if (cmd->base.duplex) { 635 switch (cmd->base.speed) { 636 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; 637 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; 638 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; 639 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; 640 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break; 641 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break; 642 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break; 643 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break; 644 default: return -EINVAL; 645 } 646 } else { 647 switch (cmd->base.speed) { 648 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; 649 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; 650 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; 651 default: return -EINVAL; 652 } 653 } 654 655 caps |= ethtool_fec_caps_to_mcdi(efx->fec_config); 656 657 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 658 efx->loopback_mode, 0); 659 if (rc) 660 return rc; 661 662 if (cmd->base.autoneg) { 663 efx_link_set_advertising(efx, cmd->link_modes.advertising); 664 phy_cfg->forced_cap = 0; 665 } else { 666 efx_link_clear_advertising(efx); 667 phy_cfg->forced_cap = caps; 668 } 669 return 0; 670 } 671 672 static int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, 673 struct ethtool_fecparam *fec) 674 { 675 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_V2_LEN); 676 u32 caps, active, speed; /* MCDI format */ 677 bool is_25g = false; 678 size_t outlen; 679 int rc; 680 681 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 682 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 683 outbuf, sizeof(outbuf), &outlen); 684 if (rc) 685 return rc; 686 if (outlen < MC_CMD_GET_LINK_OUT_V2_LEN) 687 return -EOPNOTSUPP; 688 689 /* behaviour for 25G/50G links depends on 25G BASER bit */ 690 speed = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_LINK_SPEED); 691 is_25g = speed == 25000 || speed == 50000; 692 693 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_CAP); 694 fec->fec = mcdi_fec_caps_to_ethtool(caps, is_25g); 695 /* BASER is never supported on 100G */ 696 if (speed == 100000) 697 fec->fec &= ~ETHTOOL_FEC_BASER; 698 699 active = MCDI_DWORD(outbuf, GET_LINK_OUT_V2_FEC_TYPE); 700 switch (active) { 701 case MC_CMD_FEC_NONE: 702 fec->active_fec = ETHTOOL_FEC_OFF; 703 break; 704 case MC_CMD_FEC_BASER: 705 fec->active_fec = ETHTOOL_FEC_BASER; 706 break; 707 case MC_CMD_FEC_RS: 708 fec->active_fec = ETHTOOL_FEC_RS; 709 break; 710 default: 711 netif_warn(efx, hw, efx->net_dev, 712 "Firmware reports unrecognised FEC_TYPE %u\n", 713 active); 714 /* We don't know what firmware has picked. AUTO is as good a 715 * "can't happen" value as any other. 716 */ 717 fec->active_fec = ETHTOOL_FEC_AUTO; 718 break; 719 } 720 721 return 0; 722 } 723 724 static int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, 725 const struct ethtool_fecparam *fec) 726 { 727 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 728 u32 caps; 729 int rc; 730 731 /* Work out what efx_mcdi_phy_set_link_ksettings() would produce from 732 * saved advertising bits 733 */ 734 if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising)) 735 caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) | 736 1 << MC_CMD_PHY_CAP_AN_LBN); 737 else 738 caps = phy_cfg->forced_cap; 739 740 caps |= ethtool_fec_caps_to_mcdi(fec->fec); 741 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), 742 efx->loopback_mode, 0); 743 if (rc) 744 return rc; 745 746 /* Record the new FEC setting for subsequent set_link calls */ 747 efx->fec_config = fec->fec; 748 return 0; 749 } 750 751 static int efx_mcdi_phy_test_alive(struct efx_nic *efx) 752 { 753 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN); 754 size_t outlen; 755 int rc; 756 757 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); 758 759 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, 760 outbuf, sizeof(outbuf), &outlen); 761 if (rc) 762 return rc; 763 764 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) 765 return -EIO; 766 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) 767 return -EINVAL; 768 769 return 0; 770 } 771 772 static const char *const mcdi_sft9001_cable_diag_names[] = { 773 "cable.pairA.length", 774 "cable.pairB.length", 775 "cable.pairC.length", 776 "cable.pairD.length", 777 "cable.pairA.status", 778 "cable.pairB.status", 779 "cable.pairC.status", 780 "cable.pairD.status", 781 }; 782 783 static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, 784 int *results) 785 { 786 unsigned int retry, i, count = 0; 787 size_t outlen; 788 u32 status; 789 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN); 790 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN); 791 u8 *ptr; 792 int rc; 793 794 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); 795 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode); 796 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, 797 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL); 798 if (rc) 799 goto out; 800 801 /* Wait up to 10s for BIST to finish */ 802 for (retry = 0; retry < 100; ++retry) { 803 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); 804 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, 805 outbuf, sizeof(outbuf), &outlen); 806 if (rc) 807 goto out; 808 809 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT); 810 if (status != MC_CMD_POLL_BIST_RUNNING) 811 goto finished; 812 813 msleep(100); 814 } 815 816 rc = -ETIMEDOUT; 817 goto out; 818 819 finished: 820 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; 821 822 /* SFT9001 specific cable diagnostics output */ 823 if (efx->phy_type == PHY_TYPE_SFT9001B && 824 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || 825 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { 826 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); 827 if (status == MC_CMD_POLL_BIST_PASSED && 828 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { 829 for (i = 0; i < 8; i++) { 830 results[count + i] = 831 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], 832 EFX_DWORD_0); 833 } 834 } 835 count += 8; 836 } 837 rc = count; 838 839 out: 840 return rc; 841 } 842 843 static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, 844 unsigned flags) 845 { 846 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 847 u32 mode; 848 int rc; 849 850 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 851 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); 852 if (rc < 0) 853 return rc; 854 855 results += rc; 856 } 857 858 /* If we support both LONG and SHORT, then run each in response to 859 * break or not. Otherwise, run the one we support */ 860 mode = 0; 861 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { 862 if ((flags & ETH_TEST_FL_OFFLINE) && 863 (phy_cfg->flags & 864 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) 865 mode = MC_CMD_PHY_BIST_CABLE_LONG; 866 else 867 mode = MC_CMD_PHY_BIST_CABLE_SHORT; 868 } else if (phy_cfg->flags & 869 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) 870 mode = MC_CMD_PHY_BIST_CABLE_LONG; 871 872 if (mode != 0) { 873 rc = efx_mcdi_bist(efx, mode, results); 874 if (rc < 0) 875 return rc; 876 results += rc; 877 } 878 879 return 0; 880 } 881 882 static const char *efx_mcdi_phy_test_name(struct efx_nic *efx, 883 unsigned int index) 884 { 885 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; 886 887 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { 888 if (index == 0) 889 return "bist"; 890 --index; 891 } 892 893 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | 894 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { 895 if (index == 0) 896 return "cable"; 897 --index; 898 899 if (efx->phy_type == PHY_TYPE_SFT9001B) { 900 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) 901 return mcdi_sft9001_cable_diag_names[index]; 902 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); 903 } 904 } 905 906 return NULL; 907 } 908 909 #define SFP_PAGE_SIZE 128 910 #define SFF_DIAG_TYPE_OFFSET 92 911 #define SFF_DIAG_ADDR_CHANGE BIT(2) 912 #define SFF_8079_NUM_PAGES 2 913 #define SFF_8472_NUM_PAGES 4 914 #define SFF_8436_NUM_PAGES 5 915 #define SFF_DMT_LEVEL_OFFSET 94 916 917 /** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom 918 * @efx: NIC context 919 * @page: EEPROM page number 920 * @data: Destination data pointer 921 * @offset: Offset in page to copy from in to data 922 * @space: Space available in data 923 * 924 * Return: 925 * >=0 - amount of data copied 926 * <0 - error 927 */ 928 static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx, 929 unsigned int page, 930 u8 *data, ssize_t offset, 931 ssize_t space) 932 { 933 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX); 934 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN); 935 size_t outlen; 936 unsigned int payload_len; 937 unsigned int to_copy; 938 int rc; 939 940 if (offset > SFP_PAGE_SIZE) 941 return -EINVAL; 942 943 to_copy = min(space, SFP_PAGE_SIZE - offset); 944 945 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); 946 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO, 947 inbuf, sizeof(inbuf), 948 outbuf, sizeof(outbuf), 949 &outlen); 950 951 if (rc) 952 return rc; 953 954 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + 955 SFP_PAGE_SIZE)) 956 return -EIO; 957 958 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN); 959 if (payload_len != SFP_PAGE_SIZE) 960 return -EIO; 961 962 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset, 963 to_copy); 964 965 return to_copy; 966 } 967 968 static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx, 969 unsigned int page, 970 u8 byte) 971 { 972 int rc; 973 u8 data; 974 975 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1); 976 if (rc == 1) 977 return data; 978 979 return rc; 980 } 981 982 static int efx_mcdi_phy_diag_type(struct efx_nic *efx) 983 { 984 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */ 985 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 986 SFF_DIAG_TYPE_OFFSET); 987 } 988 989 static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx) 990 { 991 /* Page zero of the EEPROM includes the DMT level at byte 94. */ 992 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 993 SFF_DMT_LEVEL_OFFSET); 994 } 995 996 static u32 efx_mcdi_phy_module_type(struct efx_nic *efx) 997 { 998 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 999 1000 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS) 1001 return phy_data->media; 1002 1003 /* A QSFP+ NIC may actually have an SFP+ module attached. 1004 * The ID is page 0, byte 0. 1005 */ 1006 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) { 1007 case 0x3: 1008 return MC_CMD_MEDIA_SFP_PLUS; 1009 case 0xc: 1010 case 0xd: 1011 return MC_CMD_MEDIA_QSFP_PLUS; 1012 default: 1013 return 0; 1014 } 1015 } 1016 1017 static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, 1018 struct ethtool_eeprom *ee, u8 *data) 1019 { 1020 int rc; 1021 ssize_t space_remaining = ee->len; 1022 unsigned int page_off; 1023 bool ignore_missing; 1024 int num_pages; 1025 int page; 1026 1027 switch (efx_mcdi_phy_module_type(efx)) { 1028 case MC_CMD_MEDIA_SFP_PLUS: 1029 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ? 1030 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES; 1031 page = 0; 1032 ignore_missing = false; 1033 break; 1034 case MC_CMD_MEDIA_QSFP_PLUS: 1035 num_pages = SFF_8436_NUM_PAGES; 1036 page = -1; /* We obtain the lower page by asking for -1. */ 1037 ignore_missing = true; /* Ignore missing pages after page 0. */ 1038 break; 1039 default: 1040 return -EOPNOTSUPP; 1041 } 1042 1043 page_off = ee->offset % SFP_PAGE_SIZE; 1044 page += ee->offset / SFP_PAGE_SIZE; 1045 1046 while (space_remaining && (page < num_pages)) { 1047 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, 1048 data, page_off, 1049 space_remaining); 1050 1051 if (rc > 0) { 1052 space_remaining -= rc; 1053 data += rc; 1054 page_off = 0; 1055 page++; 1056 } else if (rc == 0) { 1057 space_remaining = 0; 1058 } else if (ignore_missing && (page > 0)) { 1059 int intended_size = SFP_PAGE_SIZE - page_off; 1060 1061 space_remaining -= intended_size; 1062 if (space_remaining < 0) { 1063 space_remaining = 0; 1064 } else { 1065 memset(data, 0, intended_size); 1066 data += intended_size; 1067 page_off = 0; 1068 page++; 1069 rc = 0; 1070 } 1071 } else { 1072 return rc; 1073 } 1074 } 1075 1076 return 0; 1077 } 1078 1079 static int efx_mcdi_phy_get_module_info(struct efx_nic *efx, 1080 struct ethtool_modinfo *modinfo) 1081 { 1082 int sff_8472_level; 1083 int diag_type; 1084 1085 switch (efx_mcdi_phy_module_type(efx)) { 1086 case MC_CMD_MEDIA_SFP_PLUS: 1087 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx); 1088 1089 /* If we can't read the diagnostics level we have none. */ 1090 if (sff_8472_level < 0) 1091 return -EOPNOTSUPP; 1092 1093 /* Check if this module requires the (unsupported) address 1094 * change operation. 1095 */ 1096 diag_type = efx_mcdi_phy_diag_type(efx); 1097 1098 if ((sff_8472_level == 0) || 1099 (diag_type & SFF_DIAG_ADDR_CHANGE)) { 1100 modinfo->type = ETH_MODULE_SFF_8079; 1101 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1102 } else { 1103 modinfo->type = ETH_MODULE_SFF_8472; 1104 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1105 } 1106 break; 1107 1108 case MC_CMD_MEDIA_QSFP_PLUS: 1109 modinfo->type = ETH_MODULE_SFF_8436; 1110 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 1111 break; 1112 1113 default: 1114 return -EOPNOTSUPP; 1115 } 1116 1117 return 0; 1118 } 1119 1120 static const struct efx_phy_operations efx_mcdi_phy_ops = { 1121 .probe = efx_mcdi_phy_probe, 1122 .init = efx_port_dummy_op_int, 1123 .reconfigure = efx_mcdi_port_reconfigure, 1124 .poll = efx_mcdi_phy_poll, 1125 .fini = efx_port_dummy_op_void, 1126 .remove = efx_mcdi_phy_remove, 1127 .get_link_ksettings = efx_mcdi_phy_get_link_ksettings, 1128 .set_link_ksettings = efx_mcdi_phy_set_link_ksettings, 1129 .get_fecparam = efx_mcdi_phy_get_fecparam, 1130 .set_fecparam = efx_mcdi_phy_set_fecparam, 1131 .test_alive = efx_mcdi_phy_test_alive, 1132 .run_tests = efx_mcdi_phy_run_tests, 1133 .test_name = efx_mcdi_phy_test_name, 1134 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom, 1135 .get_module_info = efx_mcdi_phy_get_module_info, 1136 }; 1137 1138 u32 efx_mcdi_phy_get_caps(struct efx_nic *efx) 1139 { 1140 struct efx_mcdi_phy_data *phy_data = efx->phy_data; 1141 1142 return phy_data->supported_cap; 1143 } 1144 1145 static unsigned int efx_mcdi_event_link_speed[] = { 1146 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, 1147 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, 1148 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, 1149 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000, 1150 [MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000, 1151 [MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000, 1152 [MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000, 1153 }; 1154 1155 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) 1156 { 1157 u32 flags, fcntl, speed, lpa; 1158 1159 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); 1160 EFX_WARN_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); 1161 speed = efx_mcdi_event_link_speed[speed]; 1162 1163 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); 1164 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); 1165 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); 1166 1167 /* efx->link_state is only modified by efx_mcdi_phy_get_link(), 1168 * which is only run after flushing the event queues. Therefore, it 1169 * is safe to modify the link state outside of the mac_lock here. 1170 */ 1171 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); 1172 1173 efx_mcdi_phy_check_fcntl(efx, lpa); 1174 1175 efx_link_status_changed(efx); 1176 } 1177 1178 int efx_mcdi_set_mac(struct efx_nic *efx) 1179 { 1180 u32 fcntl; 1181 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN); 1182 1183 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0); 1184 1185 /* This has no effect on EF10 */ 1186 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR), 1187 efx->net_dev->dev_addr); 1188 1189 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, 1190 EFX_MAX_FRAME_LEN(efx->net_dev->mtu)); 1191 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); 1192 1193 /* Set simple MAC filter for Siena */ 1194 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT, 1195 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter); 1196 1197 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_FLAGS, 1198 SET_MAC_IN_FLAG_INCLUDE_FCS, 1199 !!(efx->net_dev->features & NETIF_F_RXFCS)); 1200 1201 switch (efx->wanted_fc) { 1202 case EFX_FC_RX | EFX_FC_TX: 1203 fcntl = MC_CMD_FCNTL_BIDIR; 1204 break; 1205 case EFX_FC_RX: 1206 fcntl = MC_CMD_FCNTL_RESPOND; 1207 break; 1208 default: 1209 fcntl = MC_CMD_FCNTL_OFF; 1210 break; 1211 } 1212 if (efx->wanted_fc & EFX_FC_AUTO) 1213 fcntl = MC_CMD_FCNTL_AUTO; 1214 if (efx->fc_disable) 1215 fcntl = MC_CMD_FCNTL_OFF; 1216 1217 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); 1218 1219 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), 1220 NULL, 0, NULL); 1221 } 1222 1223 bool efx_mcdi_mac_check_fault(struct efx_nic *efx) 1224 { 1225 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN); 1226 size_t outlength; 1227 int rc; 1228 1229 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); 1230 1231 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, 1232 outbuf, sizeof(outbuf), &outlength); 1233 if (rc) 1234 return true; 1235 1236 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; 1237 } 1238 1239 enum efx_stats_action { 1240 EFX_STATS_ENABLE, 1241 EFX_STATS_DISABLE, 1242 EFX_STATS_PULL, 1243 }; 1244 1245 static int efx_mcdi_mac_stats(struct efx_nic *efx, 1246 enum efx_stats_action action, int clear) 1247 { 1248 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); 1249 int rc; 1250 int change = action == EFX_STATS_PULL ? 0 : 1; 1251 int enable = action == EFX_STATS_ENABLE ? 1 : 0; 1252 int period = action == EFX_STATS_ENABLE ? 1000 : 0; 1253 dma_addr_t dma_addr = efx->stats_buffer.dma_addr; 1254 u32 dma_len = action != EFX_STATS_DISABLE ? 1255 efx->num_mac_stats * sizeof(u64) : 0; 1256 1257 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); 1258 1259 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr); 1260 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, 1261 MAC_STATS_IN_DMA, !!enable, 1262 MAC_STATS_IN_CLEAR, clear, 1263 MAC_STATS_IN_PERIODIC_CHANGE, change, 1264 MAC_STATS_IN_PERIODIC_ENABLE, enable, 1265 MAC_STATS_IN_PERIODIC_CLEAR, 0, 1266 MAC_STATS_IN_PERIODIC_NOEVENT, 1, 1267 MAC_STATS_IN_PERIOD_MS, period); 1268 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); 1269 1270 if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) { 1271 struct efx_ef10_nic_data *nic_data = efx->nic_data; 1272 1273 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id); 1274 } 1275 1276 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), 1277 NULL, 0, NULL); 1278 /* Expect ENOENT if DMA queues have not been set up */ 1279 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues))) 1280 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf), 1281 NULL, 0, rc); 1282 return rc; 1283 } 1284 1285 void efx_mcdi_mac_start_stats(struct efx_nic *efx) 1286 { 1287 __le64 *dma_stats = efx->stats_buffer.addr; 1288 1289 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1290 1291 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); 1292 } 1293 1294 void efx_mcdi_mac_stop_stats(struct efx_nic *efx) 1295 { 1296 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); 1297 } 1298 1299 #define EFX_MAC_STATS_WAIT_US 100 1300 #define EFX_MAC_STATS_WAIT_ATTEMPTS 10 1301 1302 void efx_mcdi_mac_pull_stats(struct efx_nic *efx) 1303 { 1304 __le64 *dma_stats = efx->stats_buffer.addr; 1305 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; 1306 1307 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID; 1308 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); 1309 1310 while (dma_stats[efx->num_mac_stats - 1] == 1311 EFX_MC_STATS_GENERATION_INVALID && 1312 attempts-- != 0) 1313 udelay(EFX_MAC_STATS_WAIT_US); 1314 } 1315 1316 int efx_mcdi_port_probe(struct efx_nic *efx) 1317 { 1318 int rc; 1319 1320 /* Hook in PHY operations table */ 1321 efx->phy_op = &efx_mcdi_phy_ops; 1322 1323 /* Set up MDIO structure for PHY */ 1324 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 1325 efx->mdio.mdio_read = efx_mcdi_mdio_read; 1326 efx->mdio.mdio_write = efx_mcdi_mdio_write; 1327 1328 /* Fill out MDIO structure, loopback modes, and initial link state */ 1329 rc = efx->phy_op->probe(efx); 1330 if (rc != 0) 1331 return rc; 1332 1333 /* Allocate buffer for stats */ 1334 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, 1335 efx->num_mac_stats * sizeof(u64), GFP_KERNEL); 1336 if (rc) 1337 return rc; 1338 netif_dbg(efx, probe, efx->net_dev, 1339 "stats buffer at %llx (virt %p phys %llx)\n", 1340 (u64)efx->stats_buffer.dma_addr, 1341 efx->stats_buffer.addr, 1342 (u64)virt_to_phys(efx->stats_buffer.addr)); 1343 1344 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1); 1345 1346 return 0; 1347 } 1348 1349 void efx_mcdi_port_remove(struct efx_nic *efx) 1350 { 1351 efx->phy_op->remove(efx); 1352 efx_nic_free_buffer(efx, &efx->stats_buffer); 1353 } 1354 1355 /* Get physical port number (EF10 only; on Siena it is same as PF number) */ 1356 int efx_mcdi_port_get_number(struct efx_nic *efx) 1357 { 1358 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN); 1359 int rc; 1360 1361 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0, 1362 outbuf, sizeof(outbuf), NULL); 1363 if (rc) 1364 return rc; 1365 1366 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT); 1367 } 1368