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