1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 2 /* Copyright 2017-2019 NXP */ 3 4 #include <linux/mdio.h> 5 #include <linux/module.h> 6 #include <linux/fsl/enetc_mdio.h> 7 #include <linux/of_mdio.h> 8 #include <linux/of_net.h> 9 #include "enetc_pf.h" 10 11 #define ENETC_DRV_NAME_STR "ENETC PF driver" 12 13 static void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8 *addr) 14 { 15 u32 upper = __raw_readl(hw->port + ENETC_PSIPMAR0(si)); 16 u16 lower = __raw_readw(hw->port + ENETC_PSIPMAR1(si)); 17 18 *(u32 *)addr = upper; 19 *(u16 *)(addr + 4) = lower; 20 } 21 22 static void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si, 23 const u8 *addr) 24 { 25 u32 upper = *(const u32 *)addr; 26 u16 lower = *(const u16 *)(addr + 4); 27 28 __raw_writel(upper, hw->port + ENETC_PSIPMAR0(si)); 29 __raw_writew(lower, hw->port + ENETC_PSIPMAR1(si)); 30 } 31 32 static int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr) 33 { 34 struct enetc_ndev_priv *priv = netdev_priv(ndev); 35 struct sockaddr *saddr = addr; 36 37 if (!is_valid_ether_addr(saddr->sa_data)) 38 return -EADDRNOTAVAIL; 39 40 memcpy(ndev->dev_addr, saddr->sa_data, ndev->addr_len); 41 enetc_pf_set_primary_mac_addr(&priv->si->hw, 0, saddr->sa_data); 42 43 return 0; 44 } 45 46 static void enetc_set_vlan_promisc(struct enetc_hw *hw, char si_map) 47 { 48 u32 val = enetc_port_rd(hw, ENETC_PSIPVMR); 49 50 val &= ~ENETC_PSIPVMR_SET_VP(ENETC_VLAN_PROMISC_MAP_ALL); 51 enetc_port_wr(hw, ENETC_PSIPVMR, ENETC_PSIPVMR_SET_VP(si_map) | val); 52 } 53 54 static void enetc_enable_si_vlan_promisc(struct enetc_pf *pf, int si_idx) 55 { 56 pf->vlan_promisc_simap |= BIT(si_idx); 57 enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap); 58 } 59 60 static void enetc_disable_si_vlan_promisc(struct enetc_pf *pf, int si_idx) 61 { 62 pf->vlan_promisc_simap &= ~BIT(si_idx); 63 enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap); 64 } 65 66 static void enetc_set_isol_vlan(struct enetc_hw *hw, int si, u16 vlan, u8 qos) 67 { 68 u32 val = 0; 69 70 if (vlan) 71 val = ENETC_PSIVLAN_EN | ENETC_PSIVLAN_SET_QOS(qos) | vlan; 72 73 enetc_port_wr(hw, ENETC_PSIVLANR(si), val); 74 } 75 76 static int enetc_mac_addr_hash_idx(const u8 *addr) 77 { 78 u64 fold = __swab64(ether_addr_to_u64(addr)) >> 16; 79 u64 mask = 0; 80 int res = 0; 81 int i; 82 83 for (i = 0; i < 8; i++) 84 mask |= BIT_ULL(i * 6); 85 86 for (i = 0; i < 6; i++) 87 res |= (hweight64(fold & (mask << i)) & 0x1) << i; 88 89 return res; 90 } 91 92 static void enetc_reset_mac_addr_filter(struct enetc_mac_filter *filter) 93 { 94 filter->mac_addr_cnt = 0; 95 96 bitmap_zero(filter->mac_hash_table, 97 ENETC_MADDR_HASH_TBL_SZ); 98 } 99 100 static void enetc_add_mac_addr_em_filter(struct enetc_mac_filter *filter, 101 const unsigned char *addr) 102 { 103 /* add exact match addr */ 104 ether_addr_copy(filter->mac_addr, addr); 105 filter->mac_addr_cnt++; 106 } 107 108 static void enetc_add_mac_addr_ht_filter(struct enetc_mac_filter *filter, 109 const unsigned char *addr) 110 { 111 int idx = enetc_mac_addr_hash_idx(addr); 112 113 /* add hash table entry */ 114 __set_bit(idx, filter->mac_hash_table); 115 filter->mac_addr_cnt++; 116 } 117 118 static void enetc_clear_mac_ht_flt(struct enetc_si *si, int si_idx, int type) 119 { 120 bool err = si->errata & ENETC_ERR_UCMCSWP; 121 122 if (type == UC) { 123 enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), 0); 124 enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), 0); 125 } else { /* MC */ 126 enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), 0); 127 enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), 0); 128 } 129 } 130 131 static void enetc_set_mac_ht_flt(struct enetc_si *si, int si_idx, int type, 132 u32 *hash) 133 { 134 bool err = si->errata & ENETC_ERR_UCMCSWP; 135 136 if (type == UC) { 137 enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), *hash); 138 enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), *(hash + 1)); 139 } else { /* MC */ 140 enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), *hash); 141 enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), *(hash + 1)); 142 } 143 } 144 145 static void enetc_sync_mac_filters(struct enetc_pf *pf) 146 { 147 struct enetc_mac_filter *f = pf->mac_filter; 148 struct enetc_si *si = pf->si; 149 int i, pos; 150 151 pos = EMETC_MAC_ADDR_FILT_RES; 152 153 for (i = 0; i < MADDR_TYPE; i++, f++) { 154 bool em = (f->mac_addr_cnt == 1) && (i == UC); 155 bool clear = !f->mac_addr_cnt; 156 157 if (clear) { 158 if (i == UC) 159 enetc_clear_mac_flt_entry(si, pos); 160 161 enetc_clear_mac_ht_flt(si, 0, i); 162 continue; 163 } 164 165 /* exact match filter */ 166 if (em) { 167 int err; 168 169 enetc_clear_mac_ht_flt(si, 0, UC); 170 171 err = enetc_set_mac_flt_entry(si, pos, f->mac_addr, 172 BIT(0)); 173 if (!err) 174 continue; 175 176 /* fallback to HT filtering */ 177 dev_warn(&si->pdev->dev, "fallback to HT filt (%d)\n", 178 err); 179 } 180 181 /* hash table filter, clear EM filter for UC entries */ 182 if (i == UC) 183 enetc_clear_mac_flt_entry(si, pos); 184 185 enetc_set_mac_ht_flt(si, 0, i, (u32 *)f->mac_hash_table); 186 } 187 } 188 189 static void enetc_pf_set_rx_mode(struct net_device *ndev) 190 { 191 struct enetc_ndev_priv *priv = netdev_priv(ndev); 192 struct enetc_pf *pf = enetc_si_priv(priv->si); 193 char vlan_promisc_simap = pf->vlan_promisc_simap; 194 struct enetc_hw *hw = &priv->si->hw; 195 bool uprom = false, mprom = false; 196 struct enetc_mac_filter *filter; 197 struct netdev_hw_addr *ha; 198 u32 psipmr = 0; 199 bool em; 200 201 if (ndev->flags & IFF_PROMISC) { 202 /* enable promisc mode for SI0 (PF) */ 203 psipmr = ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0); 204 uprom = true; 205 mprom = true; 206 /* Enable VLAN promiscuous mode for SI0 (PF) */ 207 vlan_promisc_simap |= BIT(0); 208 } else if (ndev->flags & IFF_ALLMULTI) { 209 /* enable multi cast promisc mode for SI0 (PF) */ 210 psipmr = ENETC_PSIPMR_SET_MP(0); 211 mprom = true; 212 } 213 214 enetc_set_vlan_promisc(&pf->si->hw, vlan_promisc_simap); 215 216 /* first 2 filter entries belong to PF */ 217 if (!uprom) { 218 /* Update unicast filters */ 219 filter = &pf->mac_filter[UC]; 220 enetc_reset_mac_addr_filter(filter); 221 222 em = (netdev_uc_count(ndev) == 1); 223 netdev_for_each_uc_addr(ha, ndev) { 224 if (em) { 225 enetc_add_mac_addr_em_filter(filter, ha->addr); 226 break; 227 } 228 229 enetc_add_mac_addr_ht_filter(filter, ha->addr); 230 } 231 } 232 233 if (!mprom) { 234 /* Update multicast filters */ 235 filter = &pf->mac_filter[MC]; 236 enetc_reset_mac_addr_filter(filter); 237 238 netdev_for_each_mc_addr(ha, ndev) { 239 if (!is_multicast_ether_addr(ha->addr)) 240 continue; 241 242 enetc_add_mac_addr_ht_filter(filter, ha->addr); 243 } 244 } 245 246 if (!uprom || !mprom) 247 /* update PF entries */ 248 enetc_sync_mac_filters(pf); 249 250 psipmr |= enetc_port_rd(hw, ENETC_PSIPMR) & 251 ~(ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0)); 252 enetc_port_wr(hw, ENETC_PSIPMR, psipmr); 253 } 254 255 static void enetc_set_vlan_ht_filter(struct enetc_hw *hw, int si_idx, 256 u32 *hash) 257 { 258 enetc_port_wr(hw, ENETC_PSIVHFR0(si_idx), *hash); 259 enetc_port_wr(hw, ENETC_PSIVHFR1(si_idx), *(hash + 1)); 260 } 261 262 static int enetc_vid_hash_idx(unsigned int vid) 263 { 264 int res = 0; 265 int i; 266 267 for (i = 0; i < 6; i++) 268 res |= (hweight8(vid & (BIT(i) | BIT(i + 6))) & 0x1) << i; 269 270 return res; 271 } 272 273 static void enetc_sync_vlan_ht_filter(struct enetc_pf *pf, bool rehash) 274 { 275 int i; 276 277 if (rehash) { 278 bitmap_zero(pf->vlan_ht_filter, ENETC_VLAN_HT_SIZE); 279 280 for_each_set_bit(i, pf->active_vlans, VLAN_N_VID) { 281 int hidx = enetc_vid_hash_idx(i); 282 283 __set_bit(hidx, pf->vlan_ht_filter); 284 } 285 } 286 287 enetc_set_vlan_ht_filter(&pf->si->hw, 0, (u32 *)pf->vlan_ht_filter); 288 } 289 290 static int enetc_vlan_rx_add_vid(struct net_device *ndev, __be16 prot, u16 vid) 291 { 292 struct enetc_ndev_priv *priv = netdev_priv(ndev); 293 struct enetc_pf *pf = enetc_si_priv(priv->si); 294 int idx; 295 296 __set_bit(vid, pf->active_vlans); 297 298 idx = enetc_vid_hash_idx(vid); 299 if (!__test_and_set_bit(idx, pf->vlan_ht_filter)) 300 enetc_sync_vlan_ht_filter(pf, false); 301 302 return 0; 303 } 304 305 static int enetc_vlan_rx_del_vid(struct net_device *ndev, __be16 prot, u16 vid) 306 { 307 struct enetc_ndev_priv *priv = netdev_priv(ndev); 308 struct enetc_pf *pf = enetc_si_priv(priv->si); 309 310 __clear_bit(vid, pf->active_vlans); 311 enetc_sync_vlan_ht_filter(pf, true); 312 313 return 0; 314 } 315 316 static void enetc_set_loopback(struct net_device *ndev, bool en) 317 { 318 struct enetc_ndev_priv *priv = netdev_priv(ndev); 319 struct enetc_hw *hw = &priv->si->hw; 320 u32 reg; 321 322 reg = enetc_port_rd(hw, ENETC_PM0_IF_MODE); 323 if (reg & ENETC_PMO_IFM_RG) { 324 /* RGMII mode */ 325 reg = (reg & ~ENETC_PM0_IFM_RLP) | 326 (en ? ENETC_PM0_IFM_RLP : 0); 327 enetc_port_wr(hw, ENETC_PM0_IF_MODE, reg); 328 } else { 329 /* assume SGMII mode */ 330 reg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG); 331 reg = (reg & ~ENETC_PM0_CMD_XGLP) | 332 (en ? ENETC_PM0_CMD_XGLP : 0); 333 reg = (reg & ~ENETC_PM0_CMD_PHY_TX_EN) | 334 (en ? ENETC_PM0_CMD_PHY_TX_EN : 0); 335 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, reg); 336 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, reg); 337 } 338 } 339 340 static int enetc_pf_set_vf_mac(struct net_device *ndev, int vf, u8 *mac) 341 { 342 struct enetc_ndev_priv *priv = netdev_priv(ndev); 343 struct enetc_pf *pf = enetc_si_priv(priv->si); 344 struct enetc_vf_state *vf_state; 345 346 if (vf >= pf->total_vfs) 347 return -EINVAL; 348 349 if (!is_valid_ether_addr(mac)) 350 return -EADDRNOTAVAIL; 351 352 vf_state = &pf->vf_state[vf]; 353 vf_state->flags |= ENETC_VF_FLAG_PF_SET_MAC; 354 enetc_pf_set_primary_mac_addr(&priv->si->hw, vf + 1, mac); 355 return 0; 356 } 357 358 static int enetc_pf_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, 359 u8 qos, __be16 proto) 360 { 361 struct enetc_ndev_priv *priv = netdev_priv(ndev); 362 struct enetc_pf *pf = enetc_si_priv(priv->si); 363 364 if (priv->si->errata & ENETC_ERR_VLAN_ISOL) 365 return -EOPNOTSUPP; 366 367 if (vf >= pf->total_vfs) 368 return -EINVAL; 369 370 if (proto != htons(ETH_P_8021Q)) 371 /* only C-tags supported for now */ 372 return -EPROTONOSUPPORT; 373 374 enetc_set_isol_vlan(&priv->si->hw, vf + 1, vlan, qos); 375 return 0; 376 } 377 378 static int enetc_pf_set_vf_spoofchk(struct net_device *ndev, int vf, bool en) 379 { 380 struct enetc_ndev_priv *priv = netdev_priv(ndev); 381 struct enetc_pf *pf = enetc_si_priv(priv->si); 382 u32 cfgr; 383 384 if (vf >= pf->total_vfs) 385 return -EINVAL; 386 387 cfgr = enetc_port_rd(&priv->si->hw, ENETC_PSICFGR0(vf + 1)); 388 cfgr = (cfgr & ~ENETC_PSICFGR0_ASE) | (en ? ENETC_PSICFGR0_ASE : 0); 389 enetc_port_wr(&priv->si->hw, ENETC_PSICFGR0(vf + 1), cfgr); 390 391 return 0; 392 } 393 394 static void enetc_port_setup_primary_mac_address(struct enetc_si *si) 395 { 396 unsigned char mac_addr[MAX_ADDR_LEN]; 397 struct enetc_pf *pf = enetc_si_priv(si); 398 struct enetc_hw *hw = &si->hw; 399 int i; 400 401 /* check MAC addresses for PF and all VFs, if any is 0 set it ro rand */ 402 for (i = 0; i < pf->total_vfs + 1; i++) { 403 enetc_pf_get_primary_mac_addr(hw, i, mac_addr); 404 if (!is_zero_ether_addr(mac_addr)) 405 continue; 406 eth_random_addr(mac_addr); 407 dev_info(&si->pdev->dev, "no MAC address specified for SI%d, using %pM\n", 408 i, mac_addr); 409 enetc_pf_set_primary_mac_addr(hw, i, mac_addr); 410 } 411 } 412 413 static void enetc_port_assign_rfs_entries(struct enetc_si *si) 414 { 415 struct enetc_pf *pf = enetc_si_priv(si); 416 struct enetc_hw *hw = &si->hw; 417 int num_entries, vf_entries, i; 418 u32 val; 419 420 /* split RFS entries between functions */ 421 val = enetc_port_rd(hw, ENETC_PRFSCAPR); 422 num_entries = ENETC_PRFSCAPR_GET_NUM_RFS(val); 423 vf_entries = num_entries / (pf->total_vfs + 1); 424 425 for (i = 0; i < pf->total_vfs; i++) 426 enetc_port_wr(hw, ENETC_PSIRFSCFGR(i + 1), vf_entries); 427 enetc_port_wr(hw, ENETC_PSIRFSCFGR(0), 428 num_entries - vf_entries * pf->total_vfs); 429 430 /* enable RFS on port */ 431 enetc_port_wr(hw, ENETC_PRFSMR, ENETC_PRFSMR_RFSE); 432 } 433 434 static void enetc_port_si_configure(struct enetc_si *si) 435 { 436 struct enetc_pf *pf = enetc_si_priv(si); 437 struct enetc_hw *hw = &si->hw; 438 int num_rings, i; 439 u32 val; 440 441 val = enetc_port_rd(hw, ENETC_PCAPR0); 442 num_rings = min(ENETC_PCAPR0_RXBDR(val), ENETC_PCAPR0_TXBDR(val)); 443 444 val = ENETC_PSICFGR0_SET_TXBDR(ENETC_PF_NUM_RINGS); 445 val |= ENETC_PSICFGR0_SET_RXBDR(ENETC_PF_NUM_RINGS); 446 447 if (unlikely(num_rings < ENETC_PF_NUM_RINGS)) { 448 val = ENETC_PSICFGR0_SET_TXBDR(num_rings); 449 val |= ENETC_PSICFGR0_SET_RXBDR(num_rings); 450 451 dev_warn(&si->pdev->dev, "Found %d rings, expected %d!\n", 452 num_rings, ENETC_PF_NUM_RINGS); 453 454 num_rings = 0; 455 } 456 457 /* Add default one-time settings for SI0 (PF) */ 458 val |= ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 459 460 enetc_port_wr(hw, ENETC_PSICFGR0(0), val); 461 462 if (num_rings) 463 num_rings -= ENETC_PF_NUM_RINGS; 464 465 /* Configure the SIs for each available VF */ 466 val = ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 467 val |= ENETC_PSICFGR0_VTE | ENETC_PSICFGR0_SIVIE; 468 469 if (num_rings) { 470 num_rings /= pf->total_vfs; 471 val |= ENETC_PSICFGR0_SET_TXBDR(num_rings); 472 val |= ENETC_PSICFGR0_SET_RXBDR(num_rings); 473 } 474 475 for (i = 0; i < pf->total_vfs; i++) 476 enetc_port_wr(hw, ENETC_PSICFGR0(i + 1), val); 477 478 /* Port level VLAN settings */ 479 val = ENETC_PVCLCTR_OVTPIDL(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 480 enetc_port_wr(hw, ENETC_PVCLCTR, val); 481 /* use outer tag for VLAN filtering */ 482 enetc_port_wr(hw, ENETC_PSIVLANFMR, ENETC_PSIVLANFMR_VS); 483 } 484 485 static void enetc_configure_port_mac(struct enetc_hw *hw, 486 phy_interface_t phy_mode) 487 { 488 enetc_port_wr(hw, ENETC_PM0_MAXFRM, 489 ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE)); 490 491 enetc_port_wr(hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE); 492 enetc_port_wr(hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE); 493 494 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 495 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC | 496 ENETC_PM0_TX_EN | ENETC_PM0_RX_EN); 497 498 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 499 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC | 500 ENETC_PM0_TX_EN | ENETC_PM0_RX_EN); 501 /* set auto-speed for RGMII */ 502 if (enetc_port_rd(hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG || 503 phy_interface_mode_is_rgmii(phy_mode)) 504 enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_RGAUTO); 505 506 if (phy_mode == PHY_INTERFACE_MODE_USXGMII) 507 enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_XGMII); 508 } 509 510 static void enetc_configure_port_pmac(struct enetc_hw *hw) 511 { 512 u32 temp; 513 514 /* Set pMAC step lock */ 515 temp = enetc_port_rd(hw, ENETC_PFPMR); 516 enetc_port_wr(hw, ENETC_PFPMR, 517 temp | ENETC_PFPMR_PMACE | ENETC_PFPMR_MWLM); 518 519 temp = enetc_port_rd(hw, ENETC_MMCSR); 520 enetc_port_wr(hw, ENETC_MMCSR, temp | ENETC_MMCSR_ME); 521 } 522 523 static void enetc_configure_port(struct enetc_pf *pf) 524 { 525 u8 hash_key[ENETC_RSSHASH_KEY_SIZE]; 526 struct enetc_hw *hw = &pf->si->hw; 527 528 enetc_configure_port_pmac(hw); 529 530 enetc_configure_port_mac(hw, pf->if_mode); 531 532 enetc_port_si_configure(pf->si); 533 534 /* set up hash key */ 535 get_random_bytes(hash_key, ENETC_RSSHASH_KEY_SIZE); 536 enetc_set_rss_key(hw, hash_key); 537 538 /* split up RFS entries */ 539 enetc_port_assign_rfs_entries(pf->si); 540 541 /* fix-up primary MAC addresses, if not set already */ 542 enetc_port_setup_primary_mac_address(pf->si); 543 544 /* enforce VLAN promisc mode for all SIs */ 545 pf->vlan_promisc_simap = ENETC_VLAN_PROMISC_MAP_ALL; 546 enetc_set_vlan_promisc(hw, pf->vlan_promisc_simap); 547 548 enetc_port_wr(hw, ENETC_PSIPMR, 0); 549 550 /* enable port */ 551 enetc_port_wr(hw, ENETC_PMR, ENETC_PMR_EN); 552 } 553 554 /* Messaging */ 555 static u16 enetc_msg_pf_set_vf_primary_mac_addr(struct enetc_pf *pf, 556 int vf_id) 557 { 558 struct enetc_vf_state *vf_state = &pf->vf_state[vf_id]; 559 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 560 struct enetc_msg_cmd_set_primary_mac *cmd; 561 struct device *dev = &pf->si->pdev->dev; 562 u16 cmd_id; 563 char *addr; 564 565 cmd = (struct enetc_msg_cmd_set_primary_mac *)msg->vaddr; 566 cmd_id = cmd->header.id; 567 if (cmd_id != ENETC_MSG_CMD_MNG_ADD) 568 return ENETC_MSG_CMD_STATUS_FAIL; 569 570 addr = cmd->mac.sa_data; 571 if (vf_state->flags & ENETC_VF_FLAG_PF_SET_MAC) 572 dev_warn(dev, "Attempt to override PF set mac addr for VF%d\n", 573 vf_id); 574 else 575 enetc_pf_set_primary_mac_addr(&pf->si->hw, vf_id + 1, addr); 576 577 return ENETC_MSG_CMD_STATUS_OK; 578 } 579 580 void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int vf_id, u16 *status) 581 { 582 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 583 struct device *dev = &pf->si->pdev->dev; 584 struct enetc_msg_cmd_header *cmd_hdr; 585 u16 cmd_type; 586 587 *status = ENETC_MSG_CMD_STATUS_OK; 588 cmd_hdr = (struct enetc_msg_cmd_header *)msg->vaddr; 589 cmd_type = cmd_hdr->type; 590 591 switch (cmd_type) { 592 case ENETC_MSG_CMD_MNG_MAC: 593 *status = enetc_msg_pf_set_vf_primary_mac_addr(pf, vf_id); 594 break; 595 default: 596 dev_err(dev, "command not supported (cmd_type: 0x%x)\n", 597 cmd_type); 598 } 599 } 600 601 #ifdef CONFIG_PCI_IOV 602 static int enetc_sriov_configure(struct pci_dev *pdev, int num_vfs) 603 { 604 struct enetc_si *si = pci_get_drvdata(pdev); 605 struct enetc_pf *pf = enetc_si_priv(si); 606 int err; 607 608 if (!num_vfs) { 609 enetc_msg_psi_free(pf); 610 kfree(pf->vf_state); 611 pf->num_vfs = 0; 612 pci_disable_sriov(pdev); 613 } else { 614 pf->num_vfs = num_vfs; 615 616 pf->vf_state = kcalloc(num_vfs, sizeof(struct enetc_vf_state), 617 GFP_KERNEL); 618 if (!pf->vf_state) { 619 pf->num_vfs = 0; 620 return -ENOMEM; 621 } 622 623 err = enetc_msg_psi_init(pf); 624 if (err) { 625 dev_err(&pdev->dev, "enetc_msg_psi_init (%d)\n", err); 626 goto err_msg_psi; 627 } 628 629 err = pci_enable_sriov(pdev, num_vfs); 630 if (err) { 631 dev_err(&pdev->dev, "pci_enable_sriov err %d\n", err); 632 goto err_en_sriov; 633 } 634 } 635 636 return num_vfs; 637 638 err_en_sriov: 639 enetc_msg_psi_free(pf); 640 err_msg_psi: 641 kfree(pf->vf_state); 642 pf->num_vfs = 0; 643 644 return err; 645 } 646 #else 647 #define enetc_sriov_configure(pdev, num_vfs) (void)0 648 #endif 649 650 static int enetc_pf_set_features(struct net_device *ndev, 651 netdev_features_t features) 652 { 653 netdev_features_t changed = ndev->features ^ features; 654 struct enetc_ndev_priv *priv = netdev_priv(ndev); 655 656 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) { 657 struct enetc_pf *pf = enetc_si_priv(priv->si); 658 659 if (!!(features & NETIF_F_HW_VLAN_CTAG_FILTER)) 660 enetc_disable_si_vlan_promisc(pf, 0); 661 else 662 enetc_enable_si_vlan_promisc(pf, 0); 663 } 664 665 if (changed & NETIF_F_LOOPBACK) 666 enetc_set_loopback(ndev, !!(features & NETIF_F_LOOPBACK)); 667 668 return enetc_set_features(ndev, features); 669 } 670 671 static const struct net_device_ops enetc_ndev_ops = { 672 .ndo_open = enetc_open, 673 .ndo_stop = enetc_close, 674 .ndo_start_xmit = enetc_xmit, 675 .ndo_get_stats = enetc_get_stats, 676 .ndo_set_mac_address = enetc_pf_set_mac_addr, 677 .ndo_set_rx_mode = enetc_pf_set_rx_mode, 678 .ndo_vlan_rx_add_vid = enetc_vlan_rx_add_vid, 679 .ndo_vlan_rx_kill_vid = enetc_vlan_rx_del_vid, 680 .ndo_set_vf_mac = enetc_pf_set_vf_mac, 681 .ndo_set_vf_vlan = enetc_pf_set_vf_vlan, 682 .ndo_set_vf_spoofchk = enetc_pf_set_vf_spoofchk, 683 .ndo_set_features = enetc_pf_set_features, 684 .ndo_do_ioctl = enetc_ioctl, 685 .ndo_setup_tc = enetc_setup_tc, 686 }; 687 688 static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev, 689 const struct net_device_ops *ndev_ops) 690 { 691 struct enetc_ndev_priv *priv = netdev_priv(ndev); 692 693 SET_NETDEV_DEV(ndev, &si->pdev->dev); 694 priv->ndev = ndev; 695 priv->si = si; 696 priv->dev = &si->pdev->dev; 697 si->ndev = ndev; 698 699 priv->msg_enable = (NETIF_MSG_WOL << 1) - 1; 700 ndev->netdev_ops = ndev_ops; 701 enetc_set_ethtool_ops(ndev); 702 ndev->watchdog_timeo = 5 * HZ; 703 ndev->max_mtu = ENETC_MAX_MTU; 704 705 ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | NETIF_F_HW_CSUM | 706 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 707 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK; 708 ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | 709 NETIF_F_RXCSUM | NETIF_F_HW_CSUM | 710 NETIF_F_HW_VLAN_CTAG_TX | 711 NETIF_F_HW_VLAN_CTAG_RX; 712 713 if (si->num_rss) 714 ndev->hw_features |= NETIF_F_RXHASH; 715 716 if (si->errata & ENETC_ERR_TXCSUM) { 717 ndev->hw_features &= ~NETIF_F_HW_CSUM; 718 ndev->features &= ~NETIF_F_HW_CSUM; 719 } 720 721 ndev->priv_flags |= IFF_UNICAST_FLT; 722 723 if (si->hw_features & ENETC_SI_F_QBV) 724 priv->active_offloads |= ENETC_F_QBV; 725 726 if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) { 727 priv->active_offloads |= ENETC_F_QCI; 728 ndev->features |= NETIF_F_HW_TC; 729 ndev->hw_features |= NETIF_F_HW_TC; 730 } 731 732 /* pick up primary MAC address from SI */ 733 enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr); 734 } 735 736 static int enetc_mdio_probe(struct enetc_pf *pf) 737 { 738 struct device *dev = &pf->si->pdev->dev; 739 struct enetc_mdio_priv *mdio_priv; 740 struct device_node *np; 741 struct mii_bus *bus; 742 int err; 743 744 bus = devm_mdiobus_alloc_size(dev, sizeof(*mdio_priv)); 745 if (!bus) 746 return -ENOMEM; 747 748 bus->name = "Freescale ENETC MDIO Bus"; 749 bus->read = enetc_mdio_read; 750 bus->write = enetc_mdio_write; 751 bus->parent = dev; 752 mdio_priv = bus->priv; 753 mdio_priv->hw = &pf->si->hw; 754 mdio_priv->mdio_base = ENETC_EMDIO_BASE; 755 snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(dev)); 756 757 np = of_get_child_by_name(dev->of_node, "mdio"); 758 if (!np) { 759 dev_err(dev, "MDIO node missing\n"); 760 return -EINVAL; 761 } 762 763 err = of_mdiobus_register(bus, np); 764 if (err) { 765 of_node_put(np); 766 dev_err(dev, "cannot register MDIO bus\n"); 767 return err; 768 } 769 770 of_node_put(np); 771 pf->mdio = bus; 772 773 return 0; 774 } 775 776 static void enetc_mdio_remove(struct enetc_pf *pf) 777 { 778 if (pf->mdio) 779 mdiobus_unregister(pf->mdio); 780 } 781 782 static int enetc_of_get_phy(struct enetc_pf *pf) 783 { 784 struct device *dev = &pf->si->pdev->dev; 785 struct device_node *np = dev->of_node; 786 struct device_node *mdio_np; 787 int err; 788 789 pf->phy_node = of_parse_phandle(np, "phy-handle", 0); 790 if (!pf->phy_node) { 791 if (!of_phy_is_fixed_link(np)) { 792 dev_err(dev, "PHY not specified\n"); 793 return -ENODEV; 794 } 795 796 err = of_phy_register_fixed_link(np); 797 if (err < 0) { 798 dev_err(dev, "fixed link registration failed\n"); 799 return err; 800 } 801 802 pf->phy_node = of_node_get(np); 803 } 804 805 mdio_np = of_get_child_by_name(np, "mdio"); 806 if (mdio_np) { 807 of_node_put(mdio_np); 808 err = enetc_mdio_probe(pf); 809 if (err) { 810 of_node_put(pf->phy_node); 811 return err; 812 } 813 } 814 815 err = of_get_phy_mode(np, &pf->if_mode); 816 if (err) { 817 dev_err(dev, "missing phy type\n"); 818 of_node_put(pf->phy_node); 819 if (of_phy_is_fixed_link(np)) 820 of_phy_deregister_fixed_link(np); 821 else 822 enetc_mdio_remove(pf); 823 824 return -EINVAL; 825 } 826 827 return 0; 828 } 829 830 static void enetc_of_put_phy(struct enetc_pf *pf) 831 { 832 struct device_node *np = pf->si->pdev->dev.of_node; 833 834 if (np && of_phy_is_fixed_link(np)) 835 of_phy_deregister_fixed_link(np); 836 if (pf->phy_node) 837 of_node_put(pf->phy_node); 838 } 839 840 static int enetc_imdio_init(struct enetc_pf *pf, bool is_c45) 841 { 842 struct device *dev = &pf->si->pdev->dev; 843 struct enetc_mdio_priv *mdio_priv; 844 struct phy_device *pcs; 845 struct mii_bus *bus; 846 int err; 847 848 bus = mdiobus_alloc_size(sizeof(*mdio_priv)); 849 if (!bus) 850 return -ENOMEM; 851 852 bus->name = "Freescale ENETC internal MDIO Bus"; 853 bus->read = enetc_mdio_read; 854 bus->write = enetc_mdio_write; 855 bus->parent = dev; 856 bus->phy_mask = ~0; 857 mdio_priv = bus->priv; 858 mdio_priv->hw = &pf->si->hw; 859 mdio_priv->mdio_base = ENETC_PM_IMDIO_BASE; 860 snprintf(bus->id, MII_BUS_ID_SIZE, "%s-imdio", dev_name(dev)); 861 862 err = mdiobus_register(bus); 863 if (err) { 864 dev_err(dev, "cannot register internal MDIO bus (%d)\n", err); 865 goto free_mdio_bus; 866 } 867 868 pcs = get_phy_device(bus, 0, is_c45); 869 if (IS_ERR(pcs)) { 870 err = PTR_ERR(pcs); 871 dev_err(dev, "cannot get internal PCS PHY (%d)\n", err); 872 goto unregister_mdiobus; 873 } 874 875 pf->imdio = bus; 876 pf->pcs = pcs; 877 878 return 0; 879 880 unregister_mdiobus: 881 mdiobus_unregister(bus); 882 free_mdio_bus: 883 mdiobus_free(bus); 884 return err; 885 } 886 887 static void enetc_imdio_remove(struct enetc_pf *pf) 888 { 889 if (pf->pcs) 890 put_device(&pf->pcs->mdio.dev); 891 if (pf->imdio) { 892 mdiobus_unregister(pf->imdio); 893 mdiobus_free(pf->imdio); 894 } 895 } 896 897 static void enetc_configure_sgmii(struct phy_device *pcs) 898 { 899 /* SGMII spec requires tx_config_Reg[15:0] to be exactly 0x4001 900 * for the MAC PCS in order to acknowledge the AN. 901 */ 902 phy_write(pcs, MII_ADVERTISE, ADVERTISE_SGMII | ADVERTISE_LPACK); 903 904 phy_write(pcs, ENETC_PCS_IF_MODE, 905 ENETC_PCS_IF_MODE_SGMII_EN | 906 ENETC_PCS_IF_MODE_USE_SGMII_AN); 907 908 /* Adjust link timer for SGMII */ 909 phy_write(pcs, ENETC_PCS_LINK_TIMER1, ENETC_PCS_LINK_TIMER1_VAL); 910 phy_write(pcs, ENETC_PCS_LINK_TIMER2, ENETC_PCS_LINK_TIMER2_VAL); 911 912 phy_write(pcs, MII_BMCR, BMCR_ANRESTART | BMCR_ANENABLE); 913 } 914 915 static void enetc_configure_2500basex(struct phy_device *pcs) 916 { 917 phy_write(pcs, ENETC_PCS_IF_MODE, 918 ENETC_PCS_IF_MODE_SGMII_EN | 919 ENETC_PCS_IF_MODE_SGMII_SPEED(ENETC_PCS_SPEED_2500)); 920 921 phy_write(pcs, MII_BMCR, BMCR_SPEED1000 | BMCR_FULLDPLX | BMCR_RESET); 922 } 923 924 static void enetc_configure_usxgmii(struct phy_device *pcs) 925 { 926 /* Configure device ability for the USXGMII Replicator */ 927 phy_write_mmd(pcs, MDIO_MMD_VEND2, MII_ADVERTISE, 928 ADVERTISE_SGMII | ADVERTISE_LPACK | 929 MDIO_USXGMII_FULL_DUPLEX); 930 931 /* Restart PCS AN */ 932 phy_write_mmd(pcs, MDIO_MMD_VEND2, MII_BMCR, 933 BMCR_RESET | BMCR_ANENABLE | BMCR_ANRESTART); 934 } 935 936 static int enetc_configure_serdes(struct enetc_ndev_priv *priv) 937 { 938 bool is_c45 = priv->if_mode == PHY_INTERFACE_MODE_USXGMII; 939 struct enetc_pf *pf = enetc_si_priv(priv->si); 940 int err; 941 942 if (priv->if_mode != PHY_INTERFACE_MODE_SGMII && 943 priv->if_mode != PHY_INTERFACE_MODE_2500BASEX && 944 priv->if_mode != PHY_INTERFACE_MODE_USXGMII) 945 return 0; 946 947 err = enetc_imdio_init(pf, is_c45); 948 if (err) 949 return err; 950 951 switch (priv->if_mode) { 952 case PHY_INTERFACE_MODE_SGMII: 953 enetc_configure_sgmii(pf->pcs); 954 break; 955 case PHY_INTERFACE_MODE_2500BASEX: 956 enetc_configure_2500basex(pf->pcs); 957 break; 958 case PHY_INTERFACE_MODE_USXGMII: 959 enetc_configure_usxgmii(pf->pcs); 960 break; 961 default: 962 dev_err(&pf->si->pdev->dev, "Unsupported link mode %s\n", 963 phy_modes(priv->if_mode)); 964 } 965 966 return 0; 967 } 968 969 static void enetc_teardown_serdes(struct enetc_ndev_priv *priv) 970 { 971 struct enetc_pf *pf = enetc_si_priv(priv->si); 972 973 enetc_imdio_remove(pf); 974 } 975 976 static int enetc_pf_probe(struct pci_dev *pdev, 977 const struct pci_device_id *ent) 978 { 979 struct enetc_ndev_priv *priv; 980 struct net_device *ndev; 981 struct enetc_si *si; 982 struct enetc_pf *pf; 983 int err; 984 985 if (pdev->dev.of_node && !of_device_is_available(pdev->dev.of_node)) { 986 dev_info(&pdev->dev, "device is disabled, skipping\n"); 987 return -ENODEV; 988 } 989 990 err = enetc_pci_probe(pdev, KBUILD_MODNAME, sizeof(*pf)); 991 if (err) { 992 dev_err(&pdev->dev, "PCI probing failed\n"); 993 return err; 994 } 995 996 si = pci_get_drvdata(pdev); 997 if (!si->hw.port || !si->hw.global) { 998 err = -ENODEV; 999 dev_err(&pdev->dev, "could not map PF space, probing a VF?\n"); 1000 goto err_map_pf_space; 1001 } 1002 1003 pf = enetc_si_priv(si); 1004 pf->si = si; 1005 pf->total_vfs = pci_sriov_get_totalvfs(pdev); 1006 1007 err = enetc_of_get_phy(pf); 1008 if (err) 1009 dev_warn(&pdev->dev, "Fallback to PHY-less operation\n"); 1010 1011 enetc_configure_port(pf); 1012 1013 enetc_get_si_caps(si); 1014 1015 ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); 1016 if (!ndev) { 1017 err = -ENOMEM; 1018 dev_err(&pdev->dev, "netdev creation failed\n"); 1019 goto err_alloc_netdev; 1020 } 1021 1022 enetc_pf_netdev_setup(si, ndev, &enetc_ndev_ops); 1023 1024 priv = netdev_priv(ndev); 1025 priv->phy_node = pf->phy_node; 1026 priv->if_mode = pf->if_mode; 1027 1028 enetc_init_si_rings_params(priv); 1029 1030 err = enetc_alloc_si_resources(priv); 1031 if (err) { 1032 dev_err(&pdev->dev, "SI resource alloc failed\n"); 1033 goto err_alloc_si_res; 1034 } 1035 1036 err = enetc_alloc_msix(priv); 1037 if (err) { 1038 dev_err(&pdev->dev, "MSIX alloc failed\n"); 1039 goto err_alloc_msix; 1040 } 1041 1042 err = enetc_configure_serdes(priv); 1043 if (err) 1044 dev_warn(&pdev->dev, "Attempted SerDes config but failed\n"); 1045 1046 err = register_netdev(ndev); 1047 if (err) 1048 goto err_reg_netdev; 1049 1050 netif_carrier_off(ndev); 1051 1052 return 0; 1053 1054 err_reg_netdev: 1055 enetc_teardown_serdes(priv); 1056 enetc_mdio_remove(pf); 1057 enetc_free_msix(priv); 1058 err_alloc_msix: 1059 enetc_free_si_resources(priv); 1060 err_alloc_si_res: 1061 si->ndev = NULL; 1062 free_netdev(ndev); 1063 err_alloc_netdev: 1064 enetc_of_put_phy(pf); 1065 err_map_pf_space: 1066 enetc_pci_remove(pdev); 1067 1068 return err; 1069 } 1070 1071 static void enetc_pf_remove(struct pci_dev *pdev) 1072 { 1073 struct enetc_si *si = pci_get_drvdata(pdev); 1074 struct enetc_pf *pf = enetc_si_priv(si); 1075 struct enetc_ndev_priv *priv; 1076 1077 if (pf->num_vfs) 1078 enetc_sriov_configure(pdev, 0); 1079 1080 priv = netdev_priv(si->ndev); 1081 unregister_netdev(si->ndev); 1082 1083 enetc_teardown_serdes(priv); 1084 enetc_mdio_remove(pf); 1085 enetc_of_put_phy(pf); 1086 1087 enetc_free_msix(priv); 1088 1089 enetc_free_si_resources(priv); 1090 1091 free_netdev(si->ndev); 1092 1093 enetc_pci_remove(pdev); 1094 } 1095 1096 static const struct pci_device_id enetc_pf_id_table[] = { 1097 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PF) }, 1098 { 0, } /* End of table. */ 1099 }; 1100 MODULE_DEVICE_TABLE(pci, enetc_pf_id_table); 1101 1102 static struct pci_driver enetc_pf_driver = { 1103 .name = KBUILD_MODNAME, 1104 .id_table = enetc_pf_id_table, 1105 .probe = enetc_pf_probe, 1106 .remove = enetc_pf_remove, 1107 #ifdef CONFIG_PCI_IOV 1108 .sriov_configure = enetc_sriov_configure, 1109 #endif 1110 }; 1111 module_pci_driver(enetc_pf_driver); 1112 1113 MODULE_DESCRIPTION(ENETC_DRV_NAME_STR); 1114 MODULE_LICENSE("Dual BSD/GPL"); 1115