1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 2 /* Copyright 2017-2019 NXP */ 3 4 #include <linux/module.h> 5 #include <linux/of_mdio.h> 6 #include <linux/of_net.h> 7 #include "enetc_pf.h" 8 9 #define ENETC_DRV_VER_MAJ 1 10 #define ENETC_DRV_VER_MIN 0 11 12 #define ENETC_DRV_VER_STR __stringify(ENETC_DRV_VER_MAJ) "." \ 13 __stringify(ENETC_DRV_VER_MIN) 14 static const char enetc_drv_ver[] = ENETC_DRV_VER_STR; 15 #define ENETC_DRV_NAME_STR "ENETC PF driver" 16 static const char enetc_drv_name[] = ENETC_DRV_NAME_STR; 17 18 static void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8 *addr) 19 { 20 u32 upper = __raw_readl(hw->port + ENETC_PSIPMAR0(si)); 21 u16 lower = __raw_readw(hw->port + ENETC_PSIPMAR1(si)); 22 23 *(u32 *)addr = upper; 24 *(u16 *)(addr + 4) = lower; 25 } 26 27 static void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si, 28 const u8 *addr) 29 { 30 u32 upper = *(const u32 *)addr; 31 u16 lower = *(const u16 *)(addr + 4); 32 33 __raw_writel(upper, hw->port + ENETC_PSIPMAR0(si)); 34 __raw_writew(lower, hw->port + ENETC_PSIPMAR1(si)); 35 } 36 37 static int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr) 38 { 39 struct enetc_ndev_priv *priv = netdev_priv(ndev); 40 struct sockaddr *saddr = addr; 41 42 if (!is_valid_ether_addr(saddr->sa_data)) 43 return -EADDRNOTAVAIL; 44 45 memcpy(ndev->dev_addr, saddr->sa_data, ndev->addr_len); 46 enetc_pf_set_primary_mac_addr(&priv->si->hw, 0, saddr->sa_data); 47 48 return 0; 49 } 50 51 static void enetc_set_vlan_promisc(struct enetc_hw *hw, char si_map) 52 { 53 u32 val = enetc_port_rd(hw, ENETC_PSIPVMR); 54 55 val &= ~ENETC_PSIPVMR_SET_VP(ENETC_VLAN_PROMISC_MAP_ALL); 56 enetc_port_wr(hw, ENETC_PSIPVMR, ENETC_PSIPVMR_SET_VP(si_map) | val); 57 } 58 59 static bool enetc_si_vlan_promisc_is_on(struct enetc_pf *pf, int si_idx) 60 { 61 return pf->vlan_promisc_simap & BIT(si_idx); 62 } 63 64 static bool enetc_vlan_filter_is_on(struct enetc_pf *pf) 65 { 66 int i; 67 68 for_each_set_bit(i, pf->active_vlans, VLAN_N_VID) 69 return true; 70 71 return false; 72 } 73 74 static void enetc_enable_si_vlan_promisc(struct enetc_pf *pf, int si_idx) 75 { 76 pf->vlan_promisc_simap |= BIT(si_idx); 77 enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap); 78 } 79 80 static void enetc_disable_si_vlan_promisc(struct enetc_pf *pf, int si_idx) 81 { 82 pf->vlan_promisc_simap &= ~BIT(si_idx); 83 enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap); 84 } 85 86 static void enetc_set_isol_vlan(struct enetc_hw *hw, int si, u16 vlan, u8 qos) 87 { 88 u32 val = 0; 89 90 if (vlan) 91 val = ENETC_PSIVLAN_EN | ENETC_PSIVLAN_SET_QOS(qos) | vlan; 92 93 enetc_port_wr(hw, ENETC_PSIVLANR(si), val); 94 } 95 96 static int enetc_mac_addr_hash_idx(const u8 *addr) 97 { 98 u64 fold = __swab64(ether_addr_to_u64(addr)) >> 16; 99 u64 mask = 0; 100 int res = 0; 101 int i; 102 103 for (i = 0; i < 8; i++) 104 mask |= BIT_ULL(i * 6); 105 106 for (i = 0; i < 6; i++) 107 res |= (hweight64(fold & (mask << i)) & 0x1) << i; 108 109 return res; 110 } 111 112 static void enetc_reset_mac_addr_filter(struct enetc_mac_filter *filter) 113 { 114 filter->mac_addr_cnt = 0; 115 116 bitmap_zero(filter->mac_hash_table, 117 ENETC_MADDR_HASH_TBL_SZ); 118 } 119 120 static void enetc_add_mac_addr_em_filter(struct enetc_mac_filter *filter, 121 const unsigned char *addr) 122 { 123 /* add exact match addr */ 124 ether_addr_copy(filter->mac_addr, addr); 125 filter->mac_addr_cnt++; 126 } 127 128 static void enetc_add_mac_addr_ht_filter(struct enetc_mac_filter *filter, 129 const unsigned char *addr) 130 { 131 int idx = enetc_mac_addr_hash_idx(addr); 132 133 /* add hash table entry */ 134 __set_bit(idx, filter->mac_hash_table); 135 filter->mac_addr_cnt++; 136 } 137 138 static void enetc_clear_mac_ht_flt(struct enetc_si *si, int si_idx, int type) 139 { 140 bool err = si->errata & ENETC_ERR_UCMCSWP; 141 142 if (type == UC) { 143 enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), 0); 144 enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), 0); 145 } else { /* MC */ 146 enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), 0); 147 enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), 0); 148 } 149 } 150 151 static void enetc_set_mac_ht_flt(struct enetc_si *si, int si_idx, int type, 152 u32 *hash) 153 { 154 bool err = si->errata & ENETC_ERR_UCMCSWP; 155 156 if (type == UC) { 157 enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), *hash); 158 enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), *(hash + 1)); 159 } else { /* MC */ 160 enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), *hash); 161 enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), *(hash + 1)); 162 } 163 } 164 165 static void enetc_sync_mac_filters(struct enetc_pf *pf) 166 { 167 struct enetc_mac_filter *f = pf->mac_filter; 168 struct enetc_si *si = pf->si; 169 int i, pos; 170 171 pos = EMETC_MAC_ADDR_FILT_RES; 172 173 for (i = 0; i < MADDR_TYPE; i++, f++) { 174 bool em = (f->mac_addr_cnt == 1) && (i == UC); 175 bool clear = !f->mac_addr_cnt; 176 177 if (clear) { 178 if (i == UC) 179 enetc_clear_mac_flt_entry(si, pos); 180 181 enetc_clear_mac_ht_flt(si, 0, i); 182 continue; 183 } 184 185 /* exact match filter */ 186 if (em) { 187 int err; 188 189 enetc_clear_mac_ht_flt(si, 0, UC); 190 191 err = enetc_set_mac_flt_entry(si, pos, f->mac_addr, 192 BIT(0)); 193 if (!err) 194 continue; 195 196 /* fallback to HT filtering */ 197 dev_warn(&si->pdev->dev, "fallback to HT filt (%d)\n", 198 err); 199 } 200 201 /* hash table filter, clear EM filter for UC entries */ 202 if (i == UC) 203 enetc_clear_mac_flt_entry(si, pos); 204 205 enetc_set_mac_ht_flt(si, 0, i, (u32 *)f->mac_hash_table); 206 } 207 } 208 209 static void enetc_pf_set_rx_mode(struct net_device *ndev) 210 { 211 struct enetc_ndev_priv *priv = netdev_priv(ndev); 212 struct enetc_pf *pf = enetc_si_priv(priv->si); 213 struct enetc_hw *hw = &priv->si->hw; 214 bool uprom = false, mprom = false; 215 struct enetc_mac_filter *filter; 216 struct netdev_hw_addr *ha; 217 u32 psipmr = 0; 218 bool em; 219 220 if (ndev->flags & IFF_PROMISC) { 221 /* enable promisc mode for SI0 (PF) */ 222 psipmr = ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0); 223 uprom = true; 224 mprom = true; 225 /* enable VLAN promisc mode for SI0 */ 226 if (!enetc_si_vlan_promisc_is_on(pf, 0)) 227 enetc_enable_si_vlan_promisc(pf, 0); 228 229 } else if (ndev->flags & IFF_ALLMULTI) { 230 /* enable multi cast promisc mode for SI0 (PF) */ 231 psipmr = ENETC_PSIPMR_SET_MP(0); 232 mprom = true; 233 } 234 235 /* first 2 filter entries belong to PF */ 236 if (!uprom) { 237 /* Update unicast filters */ 238 filter = &pf->mac_filter[UC]; 239 enetc_reset_mac_addr_filter(filter); 240 241 em = (netdev_uc_count(ndev) == 1); 242 netdev_for_each_uc_addr(ha, ndev) { 243 if (em) { 244 enetc_add_mac_addr_em_filter(filter, ha->addr); 245 break; 246 } 247 248 enetc_add_mac_addr_ht_filter(filter, ha->addr); 249 } 250 } 251 252 if (!mprom) { 253 /* Update multicast filters */ 254 filter = &pf->mac_filter[MC]; 255 enetc_reset_mac_addr_filter(filter); 256 257 netdev_for_each_mc_addr(ha, ndev) { 258 if (!is_multicast_ether_addr(ha->addr)) 259 continue; 260 261 enetc_add_mac_addr_ht_filter(filter, ha->addr); 262 } 263 } 264 265 if (!uprom || !mprom) 266 /* update PF entries */ 267 enetc_sync_mac_filters(pf); 268 269 psipmr |= enetc_port_rd(hw, ENETC_PSIPMR) & 270 ~(ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0)); 271 enetc_port_wr(hw, ENETC_PSIPMR, psipmr); 272 } 273 274 static void enetc_set_vlan_ht_filter(struct enetc_hw *hw, int si_idx, 275 u32 *hash) 276 { 277 enetc_port_wr(hw, ENETC_PSIVHFR0(si_idx), *hash); 278 enetc_port_wr(hw, ENETC_PSIVHFR1(si_idx), *(hash + 1)); 279 } 280 281 static int enetc_vid_hash_idx(unsigned int vid) 282 { 283 int res = 0; 284 int i; 285 286 for (i = 0; i < 6; i++) 287 res |= (hweight8(vid & (BIT(i) | BIT(i + 6))) & 0x1) << i; 288 289 return res; 290 } 291 292 static void enetc_sync_vlan_ht_filter(struct enetc_pf *pf, bool rehash) 293 { 294 int i; 295 296 if (rehash) { 297 bitmap_zero(pf->vlan_ht_filter, ENETC_VLAN_HT_SIZE); 298 299 for_each_set_bit(i, pf->active_vlans, VLAN_N_VID) { 300 int hidx = enetc_vid_hash_idx(i); 301 302 __set_bit(hidx, pf->vlan_ht_filter); 303 } 304 } 305 306 enetc_set_vlan_ht_filter(&pf->si->hw, 0, (u32 *)pf->vlan_ht_filter); 307 } 308 309 static int enetc_vlan_rx_add_vid(struct net_device *ndev, __be16 prot, u16 vid) 310 { 311 struct enetc_ndev_priv *priv = netdev_priv(ndev); 312 struct enetc_pf *pf = enetc_si_priv(priv->si); 313 int idx; 314 315 if (enetc_si_vlan_promisc_is_on(pf, 0)) 316 enetc_disable_si_vlan_promisc(pf, 0); 317 318 __set_bit(vid, pf->active_vlans); 319 320 idx = enetc_vid_hash_idx(vid); 321 if (!__test_and_set_bit(idx, pf->vlan_ht_filter)) 322 enetc_sync_vlan_ht_filter(pf, false); 323 324 return 0; 325 } 326 327 static int enetc_vlan_rx_del_vid(struct net_device *ndev, __be16 prot, u16 vid) 328 { 329 struct enetc_ndev_priv *priv = netdev_priv(ndev); 330 struct enetc_pf *pf = enetc_si_priv(priv->si); 331 332 __clear_bit(vid, pf->active_vlans); 333 enetc_sync_vlan_ht_filter(pf, true); 334 335 if (!enetc_vlan_filter_is_on(pf)) 336 enetc_enable_si_vlan_promisc(pf, 0); 337 338 return 0; 339 } 340 341 static void enetc_set_loopback(struct net_device *ndev, bool en) 342 { 343 struct enetc_ndev_priv *priv = netdev_priv(ndev); 344 struct enetc_hw *hw = &priv->si->hw; 345 u32 reg; 346 347 reg = enetc_port_rd(hw, ENETC_PM0_IF_MODE); 348 if (reg & ENETC_PMO_IFM_RG) { 349 /* RGMII mode */ 350 reg = (reg & ~ENETC_PM0_IFM_RLP) | 351 (en ? ENETC_PM0_IFM_RLP : 0); 352 enetc_port_wr(hw, ENETC_PM0_IF_MODE, reg); 353 } else { 354 /* assume SGMII mode */ 355 reg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG); 356 reg = (reg & ~ENETC_PM0_CMD_XGLP) | 357 (en ? ENETC_PM0_CMD_XGLP : 0); 358 reg = (reg & ~ENETC_PM0_CMD_PHY_TX_EN) | 359 (en ? ENETC_PM0_CMD_PHY_TX_EN : 0); 360 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, reg); 361 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, reg); 362 } 363 } 364 365 static int enetc_pf_set_vf_mac(struct net_device *ndev, int vf, u8 *mac) 366 { 367 struct enetc_ndev_priv *priv = netdev_priv(ndev); 368 struct enetc_pf *pf = enetc_si_priv(priv->si); 369 struct enetc_vf_state *vf_state; 370 371 if (vf >= pf->total_vfs) 372 return -EINVAL; 373 374 if (!is_valid_ether_addr(mac)) 375 return -EADDRNOTAVAIL; 376 377 vf_state = &pf->vf_state[vf]; 378 vf_state->flags |= ENETC_VF_FLAG_PF_SET_MAC; 379 enetc_pf_set_primary_mac_addr(&priv->si->hw, vf + 1, mac); 380 return 0; 381 } 382 383 static int enetc_pf_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, 384 u8 qos, __be16 proto) 385 { 386 struct enetc_ndev_priv *priv = netdev_priv(ndev); 387 struct enetc_pf *pf = enetc_si_priv(priv->si); 388 389 if (priv->si->errata & ENETC_ERR_VLAN_ISOL) 390 return -EOPNOTSUPP; 391 392 if (vf >= pf->total_vfs) 393 return -EINVAL; 394 395 if (proto != htons(ETH_P_8021Q)) 396 /* only C-tags supported for now */ 397 return -EPROTONOSUPPORT; 398 399 enetc_set_isol_vlan(&priv->si->hw, vf + 1, vlan, qos); 400 return 0; 401 } 402 403 static int enetc_pf_set_vf_spoofchk(struct net_device *ndev, int vf, bool en) 404 { 405 struct enetc_ndev_priv *priv = netdev_priv(ndev); 406 struct enetc_pf *pf = enetc_si_priv(priv->si); 407 u32 cfgr; 408 409 if (vf >= pf->total_vfs) 410 return -EINVAL; 411 412 cfgr = enetc_port_rd(&priv->si->hw, ENETC_PSICFGR0(vf + 1)); 413 cfgr = (cfgr & ~ENETC_PSICFGR0_ASE) | (en ? ENETC_PSICFGR0_ASE : 0); 414 enetc_port_wr(&priv->si->hw, ENETC_PSICFGR0(vf + 1), cfgr); 415 416 return 0; 417 } 418 419 static void enetc_port_setup_primary_mac_address(struct enetc_si *si) 420 { 421 unsigned char mac_addr[MAX_ADDR_LEN]; 422 struct enetc_pf *pf = enetc_si_priv(si); 423 struct enetc_hw *hw = &si->hw; 424 int i; 425 426 /* check MAC addresses for PF and all VFs, if any is 0 set it ro rand */ 427 for (i = 0; i < pf->total_vfs + 1; i++) { 428 enetc_pf_get_primary_mac_addr(hw, i, mac_addr); 429 if (!is_zero_ether_addr(mac_addr)) 430 continue; 431 eth_random_addr(mac_addr); 432 dev_info(&si->pdev->dev, "no MAC address specified for SI%d, using %pM\n", 433 i, mac_addr); 434 enetc_pf_set_primary_mac_addr(hw, i, mac_addr); 435 } 436 } 437 438 static void enetc_port_assign_rfs_entries(struct enetc_si *si) 439 { 440 struct enetc_pf *pf = enetc_si_priv(si); 441 struct enetc_hw *hw = &si->hw; 442 int num_entries, vf_entries, i; 443 u32 val; 444 445 /* split RFS entries between functions */ 446 val = enetc_port_rd(hw, ENETC_PRFSCAPR); 447 num_entries = ENETC_PRFSCAPR_GET_NUM_RFS(val); 448 vf_entries = num_entries / (pf->total_vfs + 1); 449 450 for (i = 0; i < pf->total_vfs; i++) 451 enetc_port_wr(hw, ENETC_PSIRFSCFGR(i + 1), vf_entries); 452 enetc_port_wr(hw, ENETC_PSIRFSCFGR(0), 453 num_entries - vf_entries * pf->total_vfs); 454 455 /* enable RFS on port */ 456 enetc_port_wr(hw, ENETC_PRFSMR, ENETC_PRFSMR_RFSE); 457 } 458 459 static void enetc_port_si_configure(struct enetc_si *si) 460 { 461 struct enetc_pf *pf = enetc_si_priv(si); 462 struct enetc_hw *hw = &si->hw; 463 int num_rings, i; 464 u32 val; 465 466 val = enetc_port_rd(hw, ENETC_PCAPR0); 467 num_rings = min(ENETC_PCAPR0_RXBDR(val), ENETC_PCAPR0_TXBDR(val)); 468 469 val = ENETC_PSICFGR0_SET_TXBDR(ENETC_PF_NUM_RINGS); 470 val |= ENETC_PSICFGR0_SET_RXBDR(ENETC_PF_NUM_RINGS); 471 472 if (unlikely(num_rings < ENETC_PF_NUM_RINGS)) { 473 val = ENETC_PSICFGR0_SET_TXBDR(num_rings); 474 val |= ENETC_PSICFGR0_SET_RXBDR(num_rings); 475 476 dev_warn(&si->pdev->dev, "Found %d rings, expected %d!\n", 477 num_rings, ENETC_PF_NUM_RINGS); 478 479 num_rings = 0; 480 } 481 482 /* Add default one-time settings for SI0 (PF) */ 483 val |= ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 484 485 enetc_port_wr(hw, ENETC_PSICFGR0(0), val); 486 487 if (num_rings) 488 num_rings -= ENETC_PF_NUM_RINGS; 489 490 /* Configure the SIs for each available VF */ 491 val = ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 492 val |= ENETC_PSICFGR0_VTE | ENETC_PSICFGR0_SIVIE; 493 494 if (num_rings) { 495 num_rings /= pf->total_vfs; 496 val |= ENETC_PSICFGR0_SET_TXBDR(num_rings); 497 val |= ENETC_PSICFGR0_SET_RXBDR(num_rings); 498 } 499 500 for (i = 0; i < pf->total_vfs; i++) 501 enetc_port_wr(hw, ENETC_PSICFGR0(i + 1), val); 502 503 /* Port level VLAN settings */ 504 val = ENETC_PVCLCTR_OVTPIDL(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 505 enetc_port_wr(hw, ENETC_PVCLCTR, val); 506 /* use outer tag for VLAN filtering */ 507 enetc_port_wr(hw, ENETC_PSIVLANFMR, ENETC_PSIVLANFMR_VS); 508 } 509 510 static void enetc_configure_port_mac(struct enetc_hw *hw) 511 { 512 enetc_port_wr(hw, ENETC_PM0_MAXFRM, 513 ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE)); 514 515 enetc_port_wr(hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE); 516 enetc_port_wr(hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE); 517 518 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 519 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC | 520 ENETC_PM0_TX_EN | ENETC_PM0_RX_EN); 521 522 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 523 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC | 524 ENETC_PM0_TX_EN | ENETC_PM0_RX_EN); 525 /* set auto-speed for RGMII */ 526 if (enetc_port_rd(hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG) 527 enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_RGAUTO); 528 if (enetc_global_rd(hw, ENETC_G_EPFBLPR(1)) == ENETC_G_EPFBLPR1_XGMII) 529 enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_XGMII); 530 } 531 532 static void enetc_configure_port_pmac(struct enetc_hw *hw) 533 { 534 u32 temp; 535 536 /* Set pMAC step lock */ 537 temp = enetc_port_rd(hw, ENETC_PFPMR); 538 enetc_port_wr(hw, ENETC_PFPMR, 539 temp | ENETC_PFPMR_PMACE | ENETC_PFPMR_MWLM); 540 541 temp = enetc_port_rd(hw, ENETC_MMCSR); 542 enetc_port_wr(hw, ENETC_MMCSR, temp | ENETC_MMCSR_ME); 543 } 544 545 static void enetc_configure_port(struct enetc_pf *pf) 546 { 547 u8 hash_key[ENETC_RSSHASH_KEY_SIZE]; 548 struct enetc_hw *hw = &pf->si->hw; 549 550 enetc_configure_port_pmac(hw); 551 552 enetc_configure_port_mac(hw); 553 554 enetc_port_si_configure(pf->si); 555 556 /* set up hash key */ 557 get_random_bytes(hash_key, ENETC_RSSHASH_KEY_SIZE); 558 enetc_set_rss_key(hw, hash_key); 559 560 /* split up RFS entries */ 561 enetc_port_assign_rfs_entries(pf->si); 562 563 /* fix-up primary MAC addresses, if not set already */ 564 enetc_port_setup_primary_mac_address(pf->si); 565 566 /* enforce VLAN promisc mode for all SIs */ 567 pf->vlan_promisc_simap = ENETC_VLAN_PROMISC_MAP_ALL; 568 enetc_set_vlan_promisc(hw, pf->vlan_promisc_simap); 569 570 enetc_port_wr(hw, ENETC_PSIPMR, 0); 571 572 /* enable port */ 573 enetc_port_wr(hw, ENETC_PMR, ENETC_PMR_EN); 574 } 575 576 /* Messaging */ 577 static u16 enetc_msg_pf_set_vf_primary_mac_addr(struct enetc_pf *pf, 578 int vf_id) 579 { 580 struct enetc_vf_state *vf_state = &pf->vf_state[vf_id]; 581 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 582 struct enetc_msg_cmd_set_primary_mac *cmd; 583 struct device *dev = &pf->si->pdev->dev; 584 u16 cmd_id; 585 char *addr; 586 587 cmd = (struct enetc_msg_cmd_set_primary_mac *)msg->vaddr; 588 cmd_id = cmd->header.id; 589 if (cmd_id != ENETC_MSG_CMD_MNG_ADD) 590 return ENETC_MSG_CMD_STATUS_FAIL; 591 592 addr = cmd->mac.sa_data; 593 if (vf_state->flags & ENETC_VF_FLAG_PF_SET_MAC) 594 dev_warn(dev, "Attempt to override PF set mac addr for VF%d\n", 595 vf_id); 596 else 597 enetc_pf_set_primary_mac_addr(&pf->si->hw, vf_id + 1, addr); 598 599 return ENETC_MSG_CMD_STATUS_OK; 600 } 601 602 void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int vf_id, u16 *status) 603 { 604 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 605 struct device *dev = &pf->si->pdev->dev; 606 struct enetc_msg_cmd_header *cmd_hdr; 607 u16 cmd_type; 608 609 *status = ENETC_MSG_CMD_STATUS_OK; 610 cmd_hdr = (struct enetc_msg_cmd_header *)msg->vaddr; 611 cmd_type = cmd_hdr->type; 612 613 switch (cmd_type) { 614 case ENETC_MSG_CMD_MNG_MAC: 615 *status = enetc_msg_pf_set_vf_primary_mac_addr(pf, vf_id); 616 break; 617 default: 618 dev_err(dev, "command not supported (cmd_type: 0x%x)\n", 619 cmd_type); 620 } 621 } 622 623 #ifdef CONFIG_PCI_IOV 624 static int enetc_sriov_configure(struct pci_dev *pdev, int num_vfs) 625 { 626 struct enetc_si *si = pci_get_drvdata(pdev); 627 struct enetc_pf *pf = enetc_si_priv(si); 628 int err; 629 630 if (!num_vfs) { 631 enetc_msg_psi_free(pf); 632 kfree(pf->vf_state); 633 pf->num_vfs = 0; 634 pci_disable_sriov(pdev); 635 } else { 636 pf->num_vfs = num_vfs; 637 638 pf->vf_state = kcalloc(num_vfs, sizeof(struct enetc_vf_state), 639 GFP_KERNEL); 640 if (!pf->vf_state) { 641 pf->num_vfs = 0; 642 return -ENOMEM; 643 } 644 645 err = enetc_msg_psi_init(pf); 646 if (err) { 647 dev_err(&pdev->dev, "enetc_msg_psi_init (%d)\n", err); 648 goto err_msg_psi; 649 } 650 651 err = pci_enable_sriov(pdev, num_vfs); 652 if (err) { 653 dev_err(&pdev->dev, "pci_enable_sriov err %d\n", err); 654 goto err_en_sriov; 655 } 656 } 657 658 return num_vfs; 659 660 err_en_sriov: 661 enetc_msg_psi_free(pf); 662 err_msg_psi: 663 kfree(pf->vf_state); 664 pf->num_vfs = 0; 665 666 return err; 667 } 668 #else 669 #define enetc_sriov_configure(pdev, num_vfs) (void)0 670 #endif 671 672 static int enetc_pf_set_features(struct net_device *ndev, 673 netdev_features_t features) 674 { 675 netdev_features_t changed = ndev->features ^ features; 676 struct enetc_ndev_priv *priv = netdev_priv(ndev); 677 678 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 679 enetc_enable_rxvlan(&priv->si->hw, 0, 680 !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 681 682 if (changed & NETIF_F_HW_VLAN_CTAG_TX) 683 enetc_enable_txvlan(&priv->si->hw, 0, 684 !!(features & NETIF_F_HW_VLAN_CTAG_TX)); 685 686 if (changed & NETIF_F_LOOPBACK) 687 enetc_set_loopback(ndev, !!(features & NETIF_F_LOOPBACK)); 688 689 return enetc_set_features(ndev, features); 690 } 691 692 static const struct net_device_ops enetc_ndev_ops = { 693 .ndo_open = enetc_open, 694 .ndo_stop = enetc_close, 695 .ndo_start_xmit = enetc_xmit, 696 .ndo_get_stats = enetc_get_stats, 697 .ndo_set_mac_address = enetc_pf_set_mac_addr, 698 .ndo_set_rx_mode = enetc_pf_set_rx_mode, 699 .ndo_vlan_rx_add_vid = enetc_vlan_rx_add_vid, 700 .ndo_vlan_rx_kill_vid = enetc_vlan_rx_del_vid, 701 .ndo_set_vf_mac = enetc_pf_set_vf_mac, 702 .ndo_set_vf_vlan = enetc_pf_set_vf_vlan, 703 .ndo_set_vf_spoofchk = enetc_pf_set_vf_spoofchk, 704 .ndo_set_features = enetc_pf_set_features, 705 }; 706 707 static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev, 708 const struct net_device_ops *ndev_ops) 709 { 710 struct enetc_ndev_priv *priv = netdev_priv(ndev); 711 712 SET_NETDEV_DEV(ndev, &si->pdev->dev); 713 priv->ndev = ndev; 714 priv->si = si; 715 priv->dev = &si->pdev->dev; 716 si->ndev = ndev; 717 718 priv->msg_enable = (NETIF_MSG_WOL << 1) - 1; 719 ndev->netdev_ops = ndev_ops; 720 enetc_set_ethtool_ops(ndev); 721 ndev->watchdog_timeo = 5 * HZ; 722 ndev->max_mtu = ENETC_MAX_MTU; 723 724 ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | NETIF_F_HW_CSUM | 725 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 726 NETIF_F_LOOPBACK; 727 ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | 728 NETIF_F_RXCSUM | NETIF_F_HW_CSUM | 729 NETIF_F_HW_VLAN_CTAG_TX | 730 NETIF_F_HW_VLAN_CTAG_RX | 731 NETIF_F_HW_VLAN_CTAG_FILTER; 732 733 if (si->num_rss) 734 ndev->hw_features |= NETIF_F_RXHASH; 735 736 if (si->errata & ENETC_ERR_TXCSUM) { 737 ndev->hw_features &= ~NETIF_F_HW_CSUM; 738 ndev->features &= ~NETIF_F_HW_CSUM; 739 } 740 741 ndev->priv_flags |= IFF_UNICAST_FLT; 742 743 /* pick up primary MAC address from SI */ 744 enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr); 745 } 746 747 static int enetc_of_get_phy(struct enetc_ndev_priv *priv) 748 { 749 struct enetc_pf *pf = enetc_si_priv(priv->si); 750 struct device_node *np = priv->dev->of_node; 751 int err; 752 753 if (!np) { 754 dev_err(priv->dev, "missing ENETC port node\n"); 755 return -ENODEV; 756 } 757 758 priv->phy_node = of_parse_phandle(np, "phy-handle", 0); 759 if (!priv->phy_node) { 760 if (!of_phy_is_fixed_link(np)) { 761 dev_err(priv->dev, "PHY not specified\n"); 762 return -ENODEV; 763 } 764 765 err = of_phy_register_fixed_link(np); 766 if (err < 0) { 767 dev_err(priv->dev, "fixed link registration failed\n"); 768 return err; 769 } 770 771 priv->phy_node = of_node_get(np); 772 } 773 774 if (!of_phy_is_fixed_link(np)) { 775 err = enetc_mdio_probe(pf); 776 if (err) { 777 of_node_put(priv->phy_node); 778 return err; 779 } 780 } 781 782 priv->if_mode = of_get_phy_mode(np); 783 if (priv->if_mode < 0) { 784 dev_err(priv->dev, "missing phy type\n"); 785 of_node_put(priv->phy_node); 786 if (of_phy_is_fixed_link(np)) 787 of_phy_deregister_fixed_link(np); 788 else 789 enetc_mdio_remove(pf); 790 791 return -EINVAL; 792 } 793 794 return 0; 795 } 796 797 static void enetc_of_put_phy(struct enetc_ndev_priv *priv) 798 { 799 struct device_node *np = priv->dev->of_node; 800 801 if (np && of_phy_is_fixed_link(np)) 802 of_phy_deregister_fixed_link(np); 803 if (priv->phy_node) 804 of_node_put(priv->phy_node); 805 } 806 807 static int enetc_pf_probe(struct pci_dev *pdev, 808 const struct pci_device_id *ent) 809 { 810 struct enetc_ndev_priv *priv; 811 struct net_device *ndev; 812 struct enetc_si *si; 813 struct enetc_pf *pf; 814 int err; 815 816 if (pdev->dev.of_node && !of_device_is_available(pdev->dev.of_node)) { 817 dev_info(&pdev->dev, "device is disabled, skipping\n"); 818 return -ENODEV; 819 } 820 821 err = enetc_pci_probe(pdev, KBUILD_MODNAME, sizeof(*pf)); 822 if (err) { 823 dev_err(&pdev->dev, "PCI probing failed\n"); 824 return err; 825 } 826 827 si = pci_get_drvdata(pdev); 828 if (!si->hw.port || !si->hw.global) { 829 err = -ENODEV; 830 dev_err(&pdev->dev, "could not map PF space, probing a VF?\n"); 831 goto err_map_pf_space; 832 } 833 834 pf = enetc_si_priv(si); 835 pf->si = si; 836 pf->total_vfs = pci_sriov_get_totalvfs(pdev); 837 838 enetc_configure_port(pf); 839 840 enetc_get_si_caps(si); 841 842 ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); 843 if (!ndev) { 844 err = -ENOMEM; 845 dev_err(&pdev->dev, "netdev creation failed\n"); 846 goto err_alloc_netdev; 847 } 848 849 enetc_pf_netdev_setup(si, ndev, &enetc_ndev_ops); 850 851 priv = netdev_priv(ndev); 852 853 enetc_init_si_rings_params(priv); 854 855 err = enetc_alloc_si_resources(priv); 856 if (err) { 857 dev_err(&pdev->dev, "SI resource alloc failed\n"); 858 goto err_alloc_si_res; 859 } 860 861 err = enetc_alloc_msix(priv); 862 if (err) { 863 dev_err(&pdev->dev, "MSIX alloc failed\n"); 864 goto err_alloc_msix; 865 } 866 867 err = enetc_of_get_phy(priv); 868 if (err) 869 dev_warn(&pdev->dev, "Fallback to PHY-less operation\n"); 870 871 err = register_netdev(ndev); 872 if (err) 873 goto err_reg_netdev; 874 875 netif_carrier_off(ndev); 876 877 netif_info(priv, probe, ndev, "%s v%s\n", 878 enetc_drv_name, enetc_drv_ver); 879 880 return 0; 881 882 err_reg_netdev: 883 enetc_of_put_phy(priv); 884 enetc_free_msix(priv); 885 err_alloc_msix: 886 enetc_free_si_resources(priv); 887 err_alloc_si_res: 888 si->ndev = NULL; 889 free_netdev(ndev); 890 err_alloc_netdev: 891 err_map_pf_space: 892 enetc_pci_remove(pdev); 893 894 return err; 895 } 896 897 static void enetc_pf_remove(struct pci_dev *pdev) 898 { 899 struct enetc_si *si = pci_get_drvdata(pdev); 900 struct enetc_pf *pf = enetc_si_priv(si); 901 struct enetc_ndev_priv *priv; 902 903 if (pf->num_vfs) 904 enetc_sriov_configure(pdev, 0); 905 906 priv = netdev_priv(si->ndev); 907 netif_info(priv, drv, si->ndev, "%s v%s remove\n", 908 enetc_drv_name, enetc_drv_ver); 909 910 unregister_netdev(si->ndev); 911 912 enetc_mdio_remove(pf); 913 enetc_of_put_phy(priv); 914 915 enetc_free_msix(priv); 916 917 enetc_free_si_resources(priv); 918 919 free_netdev(si->ndev); 920 921 enetc_pci_remove(pdev); 922 } 923 924 static const struct pci_device_id enetc_pf_id_table[] = { 925 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PF) }, 926 { 0, } /* End of table. */ 927 }; 928 MODULE_DEVICE_TABLE(pci, enetc_pf_id_table); 929 930 static struct pci_driver enetc_pf_driver = { 931 .name = KBUILD_MODNAME, 932 .id_table = enetc_pf_id_table, 933 .probe = enetc_pf_probe, 934 .remove = enetc_pf_remove, 935 #ifdef CONFIG_PCI_IOV 936 .sriov_configure = enetc_sriov_configure, 937 #endif 938 }; 939 module_pci_driver(enetc_pf_driver); 940 941 MODULE_DESCRIPTION(ENETC_DRV_NAME_STR); 942 MODULE_LICENSE("Dual BSD/GPL"); 943 MODULE_VERSION(ENETC_DRV_VER_STR); 944