1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 2 /* Copyright 2017-2019 NXP */ 3 4 #include <asm/unaligned.h> 5 #include <linux/mdio.h> 6 #include <linux/module.h> 7 #include <linux/fsl/enetc_mdio.h> 8 #include <linux/of_platform.h> 9 #include <linux/of_mdio.h> 10 #include <linux/of_net.h> 11 #include <linux/pcs-lynx.h> 12 #include "enetc_ierb.h" 13 #include "enetc_pf.h" 14 15 #define ENETC_DRV_NAME_STR "ENETC PF driver" 16 17 static void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8 *addr) 18 { 19 u32 upper = __raw_readl(hw->port + ENETC_PSIPMAR0(si)); 20 u16 lower = __raw_readw(hw->port + ENETC_PSIPMAR1(si)); 21 22 put_unaligned_le32(upper, addr); 23 put_unaligned_le16(lower, addr + 4); 24 } 25 26 static void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si, 27 const u8 *addr) 28 { 29 u32 upper = get_unaligned_le32(addr); 30 u16 lower = get_unaligned_le16(addr + 4); 31 32 __raw_writel(upper, hw->port + ENETC_PSIPMAR0(si)); 33 __raw_writew(lower, hw->port + ENETC_PSIPMAR1(si)); 34 } 35 36 static int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr) 37 { 38 struct enetc_ndev_priv *priv = netdev_priv(ndev); 39 struct sockaddr *saddr = addr; 40 41 if (!is_valid_ether_addr(saddr->sa_data)) 42 return -EADDRNOTAVAIL; 43 44 eth_hw_addr_set(ndev, saddr->sa_data); 45 enetc_pf_set_primary_mac_addr(&priv->si->hw, 0, saddr->sa_data); 46 47 return 0; 48 } 49 50 static void enetc_set_vlan_promisc(struct enetc_hw *hw, char si_map) 51 { 52 u32 val = enetc_port_rd(hw, ENETC_PSIPVMR); 53 54 val &= ~ENETC_PSIPVMR_SET_VP(ENETC_VLAN_PROMISC_MAP_ALL); 55 enetc_port_wr(hw, ENETC_PSIPVMR, ENETC_PSIPVMR_SET_VP(si_map) | val); 56 } 57 58 static void enetc_enable_si_vlan_promisc(struct enetc_pf *pf, int si_idx) 59 { 60 pf->vlan_promisc_simap |= BIT(si_idx); 61 enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap); 62 } 63 64 static void enetc_disable_si_vlan_promisc(struct enetc_pf *pf, int si_idx) 65 { 66 pf->vlan_promisc_simap &= ~BIT(si_idx); 67 enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap); 68 } 69 70 static void enetc_set_isol_vlan(struct enetc_hw *hw, int si, u16 vlan, u8 qos) 71 { 72 u32 val = 0; 73 74 if (vlan) 75 val = ENETC_PSIVLAN_EN | ENETC_PSIVLAN_SET_QOS(qos) | vlan; 76 77 enetc_port_wr(hw, ENETC_PSIVLANR(si), val); 78 } 79 80 static int enetc_mac_addr_hash_idx(const u8 *addr) 81 { 82 u64 fold = __swab64(ether_addr_to_u64(addr)) >> 16; 83 u64 mask = 0; 84 int res = 0; 85 int i; 86 87 for (i = 0; i < 8; i++) 88 mask |= BIT_ULL(i * 6); 89 90 for (i = 0; i < 6; i++) 91 res |= (hweight64(fold & (mask << i)) & 0x1) << i; 92 93 return res; 94 } 95 96 static void enetc_reset_mac_addr_filter(struct enetc_mac_filter *filter) 97 { 98 filter->mac_addr_cnt = 0; 99 100 bitmap_zero(filter->mac_hash_table, 101 ENETC_MADDR_HASH_TBL_SZ); 102 } 103 104 static void enetc_add_mac_addr_em_filter(struct enetc_mac_filter *filter, 105 const unsigned char *addr) 106 { 107 /* add exact match addr */ 108 ether_addr_copy(filter->mac_addr, addr); 109 filter->mac_addr_cnt++; 110 } 111 112 static void enetc_add_mac_addr_ht_filter(struct enetc_mac_filter *filter, 113 const unsigned char *addr) 114 { 115 int idx = enetc_mac_addr_hash_idx(addr); 116 117 /* add hash table entry */ 118 __set_bit(idx, filter->mac_hash_table); 119 filter->mac_addr_cnt++; 120 } 121 122 static void enetc_clear_mac_ht_flt(struct enetc_si *si, int si_idx, int type) 123 { 124 bool err = si->errata & ENETC_ERR_UCMCSWP; 125 126 if (type == UC) { 127 enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), 0); 128 enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), 0); 129 } else { /* MC */ 130 enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), 0); 131 enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), 0); 132 } 133 } 134 135 static void enetc_set_mac_ht_flt(struct enetc_si *si, int si_idx, int type, 136 unsigned long hash) 137 { 138 bool err = si->errata & ENETC_ERR_UCMCSWP; 139 140 if (type == UC) { 141 enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), 142 lower_32_bits(hash)); 143 enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), 144 upper_32_bits(hash)); 145 } else { /* MC */ 146 enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), 147 lower_32_bits(hash)); 148 enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), 149 upper_32_bits(hash)); 150 } 151 } 152 153 static void enetc_sync_mac_filters(struct enetc_pf *pf) 154 { 155 struct enetc_mac_filter *f = pf->mac_filter; 156 struct enetc_si *si = pf->si; 157 int i, pos; 158 159 pos = EMETC_MAC_ADDR_FILT_RES; 160 161 for (i = 0; i < MADDR_TYPE; i++, f++) { 162 bool em = (f->mac_addr_cnt == 1) && (i == UC); 163 bool clear = !f->mac_addr_cnt; 164 165 if (clear) { 166 if (i == UC) 167 enetc_clear_mac_flt_entry(si, pos); 168 169 enetc_clear_mac_ht_flt(si, 0, i); 170 continue; 171 } 172 173 /* exact match filter */ 174 if (em) { 175 int err; 176 177 enetc_clear_mac_ht_flt(si, 0, UC); 178 179 err = enetc_set_mac_flt_entry(si, pos, f->mac_addr, 180 BIT(0)); 181 if (!err) 182 continue; 183 184 /* fallback to HT filtering */ 185 dev_warn(&si->pdev->dev, "fallback to HT filt (%d)\n", 186 err); 187 } 188 189 /* hash table filter, clear EM filter for UC entries */ 190 if (i == UC) 191 enetc_clear_mac_flt_entry(si, pos); 192 193 enetc_set_mac_ht_flt(si, 0, i, *f->mac_hash_table); 194 } 195 } 196 197 static void enetc_pf_set_rx_mode(struct net_device *ndev) 198 { 199 struct enetc_ndev_priv *priv = netdev_priv(ndev); 200 struct enetc_pf *pf = enetc_si_priv(priv->si); 201 struct enetc_hw *hw = &priv->si->hw; 202 bool uprom = false, mprom = false; 203 struct enetc_mac_filter *filter; 204 struct netdev_hw_addr *ha; 205 u32 psipmr = 0; 206 bool em; 207 208 if (ndev->flags & IFF_PROMISC) { 209 /* enable promisc mode for SI0 (PF) */ 210 psipmr = ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0); 211 uprom = true; 212 mprom = true; 213 } else if (ndev->flags & IFF_ALLMULTI) { 214 /* enable multi cast promisc mode for SI0 (PF) */ 215 psipmr = ENETC_PSIPMR_SET_MP(0); 216 mprom = true; 217 } 218 219 /* first 2 filter entries belong to PF */ 220 if (!uprom) { 221 /* Update unicast filters */ 222 filter = &pf->mac_filter[UC]; 223 enetc_reset_mac_addr_filter(filter); 224 225 em = (netdev_uc_count(ndev) == 1); 226 netdev_for_each_uc_addr(ha, ndev) { 227 if (em) { 228 enetc_add_mac_addr_em_filter(filter, ha->addr); 229 break; 230 } 231 232 enetc_add_mac_addr_ht_filter(filter, ha->addr); 233 } 234 } 235 236 if (!mprom) { 237 /* Update multicast filters */ 238 filter = &pf->mac_filter[MC]; 239 enetc_reset_mac_addr_filter(filter); 240 241 netdev_for_each_mc_addr(ha, ndev) { 242 if (!is_multicast_ether_addr(ha->addr)) 243 continue; 244 245 enetc_add_mac_addr_ht_filter(filter, ha->addr); 246 } 247 } 248 249 if (!uprom || !mprom) 250 /* update PF entries */ 251 enetc_sync_mac_filters(pf); 252 253 psipmr |= enetc_port_rd(hw, ENETC_PSIPMR) & 254 ~(ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0)); 255 enetc_port_wr(hw, ENETC_PSIPMR, psipmr); 256 } 257 258 static void enetc_set_vlan_ht_filter(struct enetc_hw *hw, int si_idx, 259 unsigned long hash) 260 { 261 enetc_port_wr(hw, ENETC_PSIVHFR0(si_idx), lower_32_bits(hash)); 262 enetc_port_wr(hw, ENETC_PSIVHFR1(si_idx), upper_32_bits(hash)); 263 } 264 265 static int enetc_vid_hash_idx(unsigned int vid) 266 { 267 int res = 0; 268 int i; 269 270 for (i = 0; i < 6; i++) 271 res |= (hweight8(vid & (BIT(i) | BIT(i + 6))) & 0x1) << i; 272 273 return res; 274 } 275 276 static void enetc_sync_vlan_ht_filter(struct enetc_pf *pf, bool rehash) 277 { 278 int i; 279 280 if (rehash) { 281 bitmap_zero(pf->vlan_ht_filter, ENETC_VLAN_HT_SIZE); 282 283 for_each_set_bit(i, pf->active_vlans, VLAN_N_VID) { 284 int hidx = enetc_vid_hash_idx(i); 285 286 __set_bit(hidx, pf->vlan_ht_filter); 287 } 288 } 289 290 enetc_set_vlan_ht_filter(&pf->si->hw, 0, *pf->vlan_ht_filter); 291 } 292 293 static int enetc_vlan_rx_add_vid(struct net_device *ndev, __be16 prot, u16 vid) 294 { 295 struct enetc_ndev_priv *priv = netdev_priv(ndev); 296 struct enetc_pf *pf = enetc_si_priv(priv->si); 297 int idx; 298 299 __set_bit(vid, pf->active_vlans); 300 301 idx = enetc_vid_hash_idx(vid); 302 if (!__test_and_set_bit(idx, pf->vlan_ht_filter)) 303 enetc_sync_vlan_ht_filter(pf, false); 304 305 return 0; 306 } 307 308 static int enetc_vlan_rx_del_vid(struct net_device *ndev, __be16 prot, u16 vid) 309 { 310 struct enetc_ndev_priv *priv = netdev_priv(ndev); 311 struct enetc_pf *pf = enetc_si_priv(priv->si); 312 313 __clear_bit(vid, pf->active_vlans); 314 enetc_sync_vlan_ht_filter(pf, true); 315 316 return 0; 317 } 318 319 static void enetc_set_loopback(struct net_device *ndev, bool en) 320 { 321 struct enetc_ndev_priv *priv = netdev_priv(ndev); 322 struct enetc_hw *hw = &priv->si->hw; 323 u32 reg; 324 325 reg = enetc_port_rd(hw, ENETC_PM0_IF_MODE); 326 if (reg & ENETC_PM0_IFM_RG) { 327 /* RGMII mode */ 328 reg = (reg & ~ENETC_PM0_IFM_RLP) | 329 (en ? ENETC_PM0_IFM_RLP : 0); 330 enetc_port_wr(hw, ENETC_PM0_IF_MODE, reg); 331 } else { 332 /* assume SGMII mode */ 333 reg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG); 334 reg = (reg & ~ENETC_PM0_CMD_XGLP) | 335 (en ? ENETC_PM0_CMD_XGLP : 0); 336 reg = (reg & ~ENETC_PM0_CMD_PHY_TX_EN) | 337 (en ? ENETC_PM0_CMD_PHY_TX_EN : 0); 338 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, reg); 339 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, reg); 340 } 341 } 342 343 static int enetc_pf_set_vf_mac(struct net_device *ndev, int vf, u8 *mac) 344 { 345 struct enetc_ndev_priv *priv = netdev_priv(ndev); 346 struct enetc_pf *pf = enetc_si_priv(priv->si); 347 struct enetc_vf_state *vf_state; 348 349 if (vf >= pf->total_vfs) 350 return -EINVAL; 351 352 if (!is_valid_ether_addr(mac)) 353 return -EADDRNOTAVAIL; 354 355 vf_state = &pf->vf_state[vf]; 356 vf_state->flags |= ENETC_VF_FLAG_PF_SET_MAC; 357 enetc_pf_set_primary_mac_addr(&priv->si->hw, vf + 1, mac); 358 return 0; 359 } 360 361 static int enetc_pf_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, 362 u8 qos, __be16 proto) 363 { 364 struct enetc_ndev_priv *priv = netdev_priv(ndev); 365 struct enetc_pf *pf = enetc_si_priv(priv->si); 366 367 if (priv->si->errata & ENETC_ERR_VLAN_ISOL) 368 return -EOPNOTSUPP; 369 370 if (vf >= pf->total_vfs) 371 return -EINVAL; 372 373 if (proto != htons(ETH_P_8021Q)) 374 /* only C-tags supported for now */ 375 return -EPROTONOSUPPORT; 376 377 enetc_set_isol_vlan(&priv->si->hw, vf + 1, vlan, qos); 378 return 0; 379 } 380 381 static int enetc_pf_set_vf_spoofchk(struct net_device *ndev, int vf, bool en) 382 { 383 struct enetc_ndev_priv *priv = netdev_priv(ndev); 384 struct enetc_pf *pf = enetc_si_priv(priv->si); 385 u32 cfgr; 386 387 if (vf >= pf->total_vfs) 388 return -EINVAL; 389 390 cfgr = enetc_port_rd(&priv->si->hw, ENETC_PSICFGR0(vf + 1)); 391 cfgr = (cfgr & ~ENETC_PSICFGR0_ASE) | (en ? ENETC_PSICFGR0_ASE : 0); 392 enetc_port_wr(&priv->si->hw, ENETC_PSICFGR0(vf + 1), cfgr); 393 394 return 0; 395 } 396 397 static int enetc_setup_mac_address(struct device_node *np, struct enetc_pf *pf, 398 int si) 399 { 400 struct device *dev = &pf->si->pdev->dev; 401 struct enetc_hw *hw = &pf->si->hw; 402 u8 mac_addr[ETH_ALEN] = { 0 }; 403 int err; 404 405 /* (1) try to get the MAC address from the device tree */ 406 if (np) { 407 err = of_get_mac_address(np, mac_addr); 408 if (err == -EPROBE_DEFER) 409 return err; 410 } 411 412 /* (2) bootloader supplied MAC address */ 413 if (is_zero_ether_addr(mac_addr)) 414 enetc_pf_get_primary_mac_addr(hw, si, mac_addr); 415 416 /* (3) choose a random one */ 417 if (is_zero_ether_addr(mac_addr)) { 418 eth_random_addr(mac_addr); 419 dev_info(dev, "no MAC address specified for SI%d, using %pM\n", 420 si, mac_addr); 421 } 422 423 enetc_pf_set_primary_mac_addr(hw, si, mac_addr); 424 425 return 0; 426 } 427 428 static int enetc_setup_mac_addresses(struct device_node *np, 429 struct enetc_pf *pf) 430 { 431 int err, i; 432 433 /* The PF might take its MAC from the device tree */ 434 err = enetc_setup_mac_address(np, pf, 0); 435 if (err) 436 return err; 437 438 for (i = 0; i < pf->total_vfs; i++) { 439 err = enetc_setup_mac_address(NULL, pf, i + 1); 440 if (err) 441 return err; 442 } 443 444 return 0; 445 } 446 447 static void enetc_port_assign_rfs_entries(struct enetc_si *si) 448 { 449 struct enetc_pf *pf = enetc_si_priv(si); 450 struct enetc_hw *hw = &si->hw; 451 int num_entries, vf_entries, i; 452 u32 val; 453 454 /* split RFS entries between functions */ 455 val = enetc_port_rd(hw, ENETC_PRFSCAPR); 456 num_entries = ENETC_PRFSCAPR_GET_NUM_RFS(val); 457 vf_entries = num_entries / (pf->total_vfs + 1); 458 459 for (i = 0; i < pf->total_vfs; i++) 460 enetc_port_wr(hw, ENETC_PSIRFSCFGR(i + 1), vf_entries); 461 enetc_port_wr(hw, ENETC_PSIRFSCFGR(0), 462 num_entries - vf_entries * pf->total_vfs); 463 464 /* enable RFS on port */ 465 enetc_port_wr(hw, ENETC_PRFSMR, ENETC_PRFSMR_RFSE); 466 } 467 468 static void enetc_port_si_configure(struct enetc_si *si) 469 { 470 struct enetc_pf *pf = enetc_si_priv(si); 471 struct enetc_hw *hw = &si->hw; 472 int num_rings, i; 473 u32 val; 474 475 val = enetc_port_rd(hw, ENETC_PCAPR0); 476 num_rings = min(ENETC_PCAPR0_RXBDR(val), ENETC_PCAPR0_TXBDR(val)); 477 478 val = ENETC_PSICFGR0_SET_TXBDR(ENETC_PF_NUM_RINGS); 479 val |= ENETC_PSICFGR0_SET_RXBDR(ENETC_PF_NUM_RINGS); 480 481 if (unlikely(num_rings < ENETC_PF_NUM_RINGS)) { 482 val = ENETC_PSICFGR0_SET_TXBDR(num_rings); 483 val |= ENETC_PSICFGR0_SET_RXBDR(num_rings); 484 485 dev_warn(&si->pdev->dev, "Found %d rings, expected %d!\n", 486 num_rings, ENETC_PF_NUM_RINGS); 487 488 num_rings = 0; 489 } 490 491 /* Add default one-time settings for SI0 (PF) */ 492 val |= ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 493 494 enetc_port_wr(hw, ENETC_PSICFGR0(0), val); 495 496 if (num_rings) 497 num_rings -= ENETC_PF_NUM_RINGS; 498 499 /* Configure the SIs for each available VF */ 500 val = ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 501 val |= ENETC_PSICFGR0_VTE | ENETC_PSICFGR0_SIVIE; 502 503 if (num_rings) { 504 num_rings /= pf->total_vfs; 505 val |= ENETC_PSICFGR0_SET_TXBDR(num_rings); 506 val |= ENETC_PSICFGR0_SET_RXBDR(num_rings); 507 } 508 509 for (i = 0; i < pf->total_vfs; i++) 510 enetc_port_wr(hw, ENETC_PSICFGR0(i + 1), val); 511 512 /* Port level VLAN settings */ 513 val = ENETC_PVCLCTR_OVTPIDL(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S); 514 enetc_port_wr(hw, ENETC_PVCLCTR, val); 515 /* use outer tag for VLAN filtering */ 516 enetc_port_wr(hw, ENETC_PSIVLANFMR, ENETC_PSIVLANFMR_VS); 517 } 518 519 static void enetc_configure_port_mac(struct enetc_hw *hw) 520 { 521 int tc; 522 523 enetc_port_wr(hw, ENETC_PM0_MAXFRM, 524 ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE)); 525 526 for (tc = 0; tc < 8; tc++) 527 enetc_port_wr(hw, ENETC_PTCMSDUR(tc), ENETC_MAC_MAXFRM_SIZE); 528 529 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 530 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC); 531 532 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 533 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC); 534 535 /* On LS1028A, the MAC RX FIFO defaults to 2, which is too high 536 * and may lead to RX lock-up under traffic. Set it to 1 instead, 537 * as recommended by the hardware team. 538 */ 539 enetc_port_wr(hw, ENETC_PM0_RX_FIFO, ENETC_PM0_RX_FIFO_VAL); 540 } 541 542 static void enetc_mac_config(struct enetc_hw *hw, phy_interface_t phy_mode) 543 { 544 u32 val; 545 546 if (phy_interface_mode_is_rgmii(phy_mode)) { 547 val = enetc_port_rd(hw, ENETC_PM0_IF_MODE); 548 val &= ~(ENETC_PM0_IFM_EN_AUTO | ENETC_PM0_IFM_IFMODE_MASK); 549 val |= ENETC_PM0_IFM_IFMODE_GMII | ENETC_PM0_IFM_RG; 550 enetc_port_wr(hw, ENETC_PM0_IF_MODE, val); 551 } 552 553 if (phy_mode == PHY_INTERFACE_MODE_USXGMII) { 554 val = ENETC_PM0_IFM_FULL_DPX | ENETC_PM0_IFM_IFMODE_XGMII; 555 enetc_port_wr(hw, ENETC_PM0_IF_MODE, val); 556 } 557 } 558 559 static void enetc_mac_enable(struct enetc_hw *hw, bool en) 560 { 561 u32 val = enetc_port_rd(hw, ENETC_PM0_CMD_CFG); 562 563 val &= ~(ENETC_PM0_TX_EN | ENETC_PM0_RX_EN); 564 val |= en ? (ENETC_PM0_TX_EN | ENETC_PM0_RX_EN) : 0; 565 566 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, val); 567 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, val); 568 } 569 570 static void enetc_configure_port_pmac(struct enetc_hw *hw) 571 { 572 u32 temp; 573 574 /* Set pMAC step lock */ 575 temp = enetc_port_rd(hw, ENETC_PFPMR); 576 enetc_port_wr(hw, ENETC_PFPMR, 577 temp | ENETC_PFPMR_PMACE | ENETC_PFPMR_MWLM); 578 579 temp = enetc_port_rd(hw, ENETC_MMCSR); 580 enetc_port_wr(hw, ENETC_MMCSR, temp | ENETC_MMCSR_ME); 581 } 582 583 static void enetc_configure_port(struct enetc_pf *pf) 584 { 585 u8 hash_key[ENETC_RSSHASH_KEY_SIZE]; 586 struct enetc_hw *hw = &pf->si->hw; 587 588 enetc_configure_port_pmac(hw); 589 590 enetc_configure_port_mac(hw); 591 592 enetc_port_si_configure(pf->si); 593 594 /* set up hash key */ 595 get_random_bytes(hash_key, ENETC_RSSHASH_KEY_SIZE); 596 enetc_set_rss_key(hw, hash_key); 597 598 /* split up RFS entries */ 599 enetc_port_assign_rfs_entries(pf->si); 600 601 /* enforce VLAN promisc mode for all SIs */ 602 pf->vlan_promisc_simap = ENETC_VLAN_PROMISC_MAP_ALL; 603 enetc_set_vlan_promisc(hw, pf->vlan_promisc_simap); 604 605 enetc_port_wr(hw, ENETC_PSIPMR, 0); 606 607 /* enable port */ 608 enetc_port_wr(hw, ENETC_PMR, ENETC_PMR_EN); 609 } 610 611 /* Messaging */ 612 static u16 enetc_msg_pf_set_vf_primary_mac_addr(struct enetc_pf *pf, 613 int vf_id) 614 { 615 struct enetc_vf_state *vf_state = &pf->vf_state[vf_id]; 616 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 617 struct enetc_msg_cmd_set_primary_mac *cmd; 618 struct device *dev = &pf->si->pdev->dev; 619 u16 cmd_id; 620 char *addr; 621 622 cmd = (struct enetc_msg_cmd_set_primary_mac *)msg->vaddr; 623 cmd_id = cmd->header.id; 624 if (cmd_id != ENETC_MSG_CMD_MNG_ADD) 625 return ENETC_MSG_CMD_STATUS_FAIL; 626 627 addr = cmd->mac.sa_data; 628 if (vf_state->flags & ENETC_VF_FLAG_PF_SET_MAC) 629 dev_warn(dev, "Attempt to override PF set mac addr for VF%d\n", 630 vf_id); 631 else 632 enetc_pf_set_primary_mac_addr(&pf->si->hw, vf_id + 1, addr); 633 634 return ENETC_MSG_CMD_STATUS_OK; 635 } 636 637 void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int vf_id, u16 *status) 638 { 639 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 640 struct device *dev = &pf->si->pdev->dev; 641 struct enetc_msg_cmd_header *cmd_hdr; 642 u16 cmd_type; 643 644 *status = ENETC_MSG_CMD_STATUS_OK; 645 cmd_hdr = (struct enetc_msg_cmd_header *)msg->vaddr; 646 cmd_type = cmd_hdr->type; 647 648 switch (cmd_type) { 649 case ENETC_MSG_CMD_MNG_MAC: 650 *status = enetc_msg_pf_set_vf_primary_mac_addr(pf, vf_id); 651 break; 652 default: 653 dev_err(dev, "command not supported (cmd_type: 0x%x)\n", 654 cmd_type); 655 } 656 } 657 658 #ifdef CONFIG_PCI_IOV 659 static int enetc_sriov_configure(struct pci_dev *pdev, int num_vfs) 660 { 661 struct enetc_si *si = pci_get_drvdata(pdev); 662 struct enetc_pf *pf = enetc_si_priv(si); 663 int err; 664 665 if (!num_vfs) { 666 enetc_msg_psi_free(pf); 667 kfree(pf->vf_state); 668 pf->num_vfs = 0; 669 pci_disable_sriov(pdev); 670 } else { 671 pf->num_vfs = num_vfs; 672 673 pf->vf_state = kcalloc(num_vfs, sizeof(struct enetc_vf_state), 674 GFP_KERNEL); 675 if (!pf->vf_state) { 676 pf->num_vfs = 0; 677 return -ENOMEM; 678 } 679 680 err = enetc_msg_psi_init(pf); 681 if (err) { 682 dev_err(&pdev->dev, "enetc_msg_psi_init (%d)\n", err); 683 goto err_msg_psi; 684 } 685 686 err = pci_enable_sriov(pdev, num_vfs); 687 if (err) { 688 dev_err(&pdev->dev, "pci_enable_sriov err %d\n", err); 689 goto err_en_sriov; 690 } 691 } 692 693 return num_vfs; 694 695 err_en_sriov: 696 enetc_msg_psi_free(pf); 697 err_msg_psi: 698 kfree(pf->vf_state); 699 pf->num_vfs = 0; 700 701 return err; 702 } 703 #else 704 #define enetc_sriov_configure(pdev, num_vfs) (void)0 705 #endif 706 707 static int enetc_pf_set_features(struct net_device *ndev, 708 netdev_features_t features) 709 { 710 netdev_features_t changed = ndev->features ^ features; 711 struct enetc_ndev_priv *priv = netdev_priv(ndev); 712 int err; 713 714 if (changed & NETIF_F_HW_TC) { 715 err = enetc_set_psfp(ndev, !!(features & NETIF_F_HW_TC)); 716 if (err) 717 return err; 718 } 719 720 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) { 721 struct enetc_pf *pf = enetc_si_priv(priv->si); 722 723 if (!!(features & NETIF_F_HW_VLAN_CTAG_FILTER)) 724 enetc_disable_si_vlan_promisc(pf, 0); 725 else 726 enetc_enable_si_vlan_promisc(pf, 0); 727 } 728 729 if (changed & NETIF_F_LOOPBACK) 730 enetc_set_loopback(ndev, !!(features & NETIF_F_LOOPBACK)); 731 732 enetc_set_features(ndev, features); 733 734 return 0; 735 } 736 737 static int enetc_pf_setup_tc(struct net_device *ndev, enum tc_setup_type type, 738 void *type_data) 739 { 740 switch (type) { 741 case TC_SETUP_QDISC_MQPRIO: 742 return enetc_setup_tc_mqprio(ndev, type_data); 743 case TC_SETUP_QDISC_TAPRIO: 744 return enetc_setup_tc_taprio(ndev, type_data); 745 case TC_SETUP_QDISC_CBS: 746 return enetc_setup_tc_cbs(ndev, type_data); 747 case TC_SETUP_QDISC_ETF: 748 return enetc_setup_tc_txtime(ndev, type_data); 749 case TC_SETUP_BLOCK: 750 return enetc_setup_tc_psfp(ndev, type_data); 751 default: 752 return -EOPNOTSUPP; 753 } 754 } 755 756 static const struct net_device_ops enetc_ndev_ops = { 757 .ndo_open = enetc_open, 758 .ndo_stop = enetc_close, 759 .ndo_start_xmit = enetc_xmit, 760 .ndo_get_stats = enetc_get_stats, 761 .ndo_set_mac_address = enetc_pf_set_mac_addr, 762 .ndo_set_rx_mode = enetc_pf_set_rx_mode, 763 .ndo_vlan_rx_add_vid = enetc_vlan_rx_add_vid, 764 .ndo_vlan_rx_kill_vid = enetc_vlan_rx_del_vid, 765 .ndo_set_vf_mac = enetc_pf_set_vf_mac, 766 .ndo_set_vf_vlan = enetc_pf_set_vf_vlan, 767 .ndo_set_vf_spoofchk = enetc_pf_set_vf_spoofchk, 768 .ndo_set_features = enetc_pf_set_features, 769 .ndo_eth_ioctl = enetc_ioctl, 770 .ndo_setup_tc = enetc_pf_setup_tc, 771 .ndo_bpf = enetc_setup_bpf, 772 .ndo_xdp_xmit = enetc_xdp_xmit, 773 }; 774 775 static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev, 776 const struct net_device_ops *ndev_ops) 777 { 778 struct enetc_ndev_priv *priv = netdev_priv(ndev); 779 780 SET_NETDEV_DEV(ndev, &si->pdev->dev); 781 priv->ndev = ndev; 782 priv->si = si; 783 priv->dev = &si->pdev->dev; 784 si->ndev = ndev; 785 786 priv->msg_enable = (NETIF_MSG_WOL << 1) - 1; 787 ndev->netdev_ops = ndev_ops; 788 enetc_set_ethtool_ops(ndev); 789 ndev->watchdog_timeo = 5 * HZ; 790 ndev->max_mtu = ENETC_MAX_MTU; 791 792 ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | 793 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 794 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK | 795 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; 796 ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM | 797 NETIF_F_HW_VLAN_CTAG_TX | 798 NETIF_F_HW_VLAN_CTAG_RX | 799 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; 800 ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM | 801 NETIF_F_TSO | NETIF_F_TSO6; 802 803 if (si->num_rss) 804 ndev->hw_features |= NETIF_F_RXHASH; 805 806 ndev->priv_flags |= IFF_UNICAST_FLT; 807 808 if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) { 809 priv->active_offloads |= ENETC_F_QCI; 810 ndev->features |= NETIF_F_HW_TC; 811 ndev->hw_features |= NETIF_F_HW_TC; 812 } 813 814 /* pick up primary MAC address from SI */ 815 enetc_load_primary_mac_addr(&si->hw, ndev); 816 } 817 818 static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np) 819 { 820 struct device *dev = &pf->si->pdev->dev; 821 struct enetc_mdio_priv *mdio_priv; 822 struct mii_bus *bus; 823 int err; 824 825 bus = devm_mdiobus_alloc_size(dev, sizeof(*mdio_priv)); 826 if (!bus) 827 return -ENOMEM; 828 829 bus->name = "Freescale ENETC MDIO Bus"; 830 bus->read = enetc_mdio_read; 831 bus->write = enetc_mdio_write; 832 bus->parent = dev; 833 mdio_priv = bus->priv; 834 mdio_priv->hw = &pf->si->hw; 835 mdio_priv->mdio_base = ENETC_EMDIO_BASE; 836 snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(dev)); 837 838 err = of_mdiobus_register(bus, np); 839 if (err) 840 return dev_err_probe(dev, err, "cannot register MDIO bus\n"); 841 842 pf->mdio = bus; 843 844 return 0; 845 } 846 847 static void enetc_mdio_remove(struct enetc_pf *pf) 848 { 849 if (pf->mdio) 850 mdiobus_unregister(pf->mdio); 851 } 852 853 static int enetc_imdio_create(struct enetc_pf *pf) 854 { 855 struct device *dev = &pf->si->pdev->dev; 856 struct enetc_mdio_priv *mdio_priv; 857 struct phylink_pcs *phylink_pcs; 858 struct mdio_device *mdio_device; 859 struct mii_bus *bus; 860 int err; 861 862 bus = mdiobus_alloc_size(sizeof(*mdio_priv)); 863 if (!bus) 864 return -ENOMEM; 865 866 bus->name = "Freescale ENETC internal MDIO Bus"; 867 bus->read = enetc_mdio_read; 868 bus->write = enetc_mdio_write; 869 bus->parent = dev; 870 bus->phy_mask = ~0; 871 mdio_priv = bus->priv; 872 mdio_priv->hw = &pf->si->hw; 873 mdio_priv->mdio_base = ENETC_PM_IMDIO_BASE; 874 snprintf(bus->id, MII_BUS_ID_SIZE, "%s-imdio", dev_name(dev)); 875 876 err = mdiobus_register(bus); 877 if (err) { 878 dev_err(dev, "cannot register internal MDIO bus (%d)\n", err); 879 goto free_mdio_bus; 880 } 881 882 mdio_device = mdio_device_create(bus, 0); 883 if (IS_ERR(mdio_device)) { 884 err = PTR_ERR(mdio_device); 885 dev_err(dev, "cannot create mdio device (%d)\n", err); 886 goto unregister_mdiobus; 887 } 888 889 phylink_pcs = lynx_pcs_create(mdio_device); 890 if (!phylink_pcs) { 891 mdio_device_free(mdio_device); 892 err = -ENOMEM; 893 dev_err(dev, "cannot create lynx pcs (%d)\n", err); 894 goto unregister_mdiobus; 895 } 896 897 pf->imdio = bus; 898 pf->pcs = phylink_pcs; 899 900 return 0; 901 902 unregister_mdiobus: 903 mdiobus_unregister(bus); 904 free_mdio_bus: 905 mdiobus_free(bus); 906 return err; 907 } 908 909 static void enetc_imdio_remove(struct enetc_pf *pf) 910 { 911 struct mdio_device *mdio_device; 912 913 if (pf->pcs) { 914 mdio_device = lynx_get_mdio_device(pf->pcs); 915 mdio_device_free(mdio_device); 916 lynx_pcs_destroy(pf->pcs); 917 } 918 if (pf->imdio) { 919 mdiobus_unregister(pf->imdio); 920 mdiobus_free(pf->imdio); 921 } 922 } 923 924 static bool enetc_port_has_pcs(struct enetc_pf *pf) 925 { 926 return (pf->if_mode == PHY_INTERFACE_MODE_SGMII || 927 pf->if_mode == PHY_INTERFACE_MODE_2500BASEX || 928 pf->if_mode == PHY_INTERFACE_MODE_USXGMII); 929 } 930 931 static int enetc_mdiobus_create(struct enetc_pf *pf, struct device_node *node) 932 { 933 struct device_node *mdio_np; 934 int err; 935 936 mdio_np = of_get_child_by_name(node, "mdio"); 937 if (mdio_np) { 938 err = enetc_mdio_probe(pf, mdio_np); 939 940 of_node_put(mdio_np); 941 if (err) 942 return err; 943 } 944 945 if (enetc_port_has_pcs(pf)) { 946 err = enetc_imdio_create(pf); 947 if (err) { 948 enetc_mdio_remove(pf); 949 return err; 950 } 951 } 952 953 return 0; 954 } 955 956 static void enetc_mdiobus_destroy(struct enetc_pf *pf) 957 { 958 enetc_mdio_remove(pf); 959 enetc_imdio_remove(pf); 960 } 961 962 static struct phylink_pcs * 963 enetc_pl_mac_select_pcs(struct phylink_config *config, phy_interface_t iface) 964 { 965 struct enetc_pf *pf = phylink_to_enetc_pf(config); 966 967 return pf->pcs; 968 } 969 970 static void enetc_pl_mac_config(struct phylink_config *config, 971 unsigned int mode, 972 const struct phylink_link_state *state) 973 { 974 struct enetc_pf *pf = phylink_to_enetc_pf(config); 975 976 enetc_mac_config(&pf->si->hw, state->interface); 977 } 978 979 static void enetc_force_rgmii_mac(struct enetc_hw *hw, int speed, int duplex) 980 { 981 u32 old_val, val; 982 983 old_val = val = enetc_port_rd(hw, ENETC_PM0_IF_MODE); 984 985 if (speed == SPEED_1000) { 986 val &= ~ENETC_PM0_IFM_SSP_MASK; 987 val |= ENETC_PM0_IFM_SSP_1000; 988 } else if (speed == SPEED_100) { 989 val &= ~ENETC_PM0_IFM_SSP_MASK; 990 val |= ENETC_PM0_IFM_SSP_100; 991 } else if (speed == SPEED_10) { 992 val &= ~ENETC_PM0_IFM_SSP_MASK; 993 val |= ENETC_PM0_IFM_SSP_10; 994 } 995 996 if (duplex == DUPLEX_FULL) 997 val |= ENETC_PM0_IFM_FULL_DPX; 998 else 999 val &= ~ENETC_PM0_IFM_FULL_DPX; 1000 1001 if (val == old_val) 1002 return; 1003 1004 enetc_port_wr(hw, ENETC_PM0_IF_MODE, val); 1005 } 1006 1007 static void enetc_pl_mac_link_up(struct phylink_config *config, 1008 struct phy_device *phy, unsigned int mode, 1009 phy_interface_t interface, int speed, 1010 int duplex, bool tx_pause, bool rx_pause) 1011 { 1012 struct enetc_pf *pf = phylink_to_enetc_pf(config); 1013 u32 pause_off_thresh = 0, pause_on_thresh = 0; 1014 u32 init_quanta = 0, refresh_quanta = 0; 1015 struct enetc_hw *hw = &pf->si->hw; 1016 struct enetc_ndev_priv *priv; 1017 u32 rbmr, cmd_cfg; 1018 int idx; 1019 1020 priv = netdev_priv(pf->si->ndev); 1021 1022 if (pf->si->hw_features & ENETC_SI_F_QBV) 1023 enetc_sched_speed_set(priv, speed); 1024 1025 if (!phylink_autoneg_inband(mode) && 1026 phy_interface_mode_is_rgmii(interface)) 1027 enetc_force_rgmii_mac(hw, speed, duplex); 1028 1029 /* Flow control */ 1030 for (idx = 0; idx < priv->num_rx_rings; idx++) { 1031 rbmr = enetc_rxbdr_rd(hw, idx, ENETC_RBMR); 1032 1033 if (tx_pause) 1034 rbmr |= ENETC_RBMR_CM; 1035 else 1036 rbmr &= ~ENETC_RBMR_CM; 1037 1038 enetc_rxbdr_wr(hw, idx, ENETC_RBMR, rbmr); 1039 } 1040 1041 if (tx_pause) { 1042 /* When the port first enters congestion, send a PAUSE request 1043 * with the maximum number of quanta. When the port exits 1044 * congestion, it will automatically send a PAUSE frame with 1045 * zero quanta. 1046 */ 1047 init_quanta = 0xffff; 1048 1049 /* Also, set up the refresh timer to send follow-up PAUSE 1050 * frames at half the quanta value, in case the congestion 1051 * condition persists. 1052 */ 1053 refresh_quanta = 0xffff / 2; 1054 1055 /* Start emitting PAUSE frames when 3 large frames (or more 1056 * smaller frames) have accumulated in the FIFO waiting to be 1057 * DMAed to the RX ring. 1058 */ 1059 pause_on_thresh = 3 * ENETC_MAC_MAXFRM_SIZE; 1060 pause_off_thresh = 1 * ENETC_MAC_MAXFRM_SIZE; 1061 } 1062 1063 enetc_port_wr(hw, ENETC_PM0_PAUSE_QUANTA, init_quanta); 1064 enetc_port_wr(hw, ENETC_PM1_PAUSE_QUANTA, init_quanta); 1065 enetc_port_wr(hw, ENETC_PM0_PAUSE_THRESH, refresh_quanta); 1066 enetc_port_wr(hw, ENETC_PM1_PAUSE_THRESH, refresh_quanta); 1067 enetc_port_wr(hw, ENETC_PPAUONTR, pause_on_thresh); 1068 enetc_port_wr(hw, ENETC_PPAUOFFTR, pause_off_thresh); 1069 1070 cmd_cfg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG); 1071 1072 if (rx_pause) 1073 cmd_cfg &= ~ENETC_PM0_PAUSE_IGN; 1074 else 1075 cmd_cfg |= ENETC_PM0_PAUSE_IGN; 1076 1077 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, cmd_cfg); 1078 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, cmd_cfg); 1079 1080 enetc_mac_enable(hw, true); 1081 } 1082 1083 static void enetc_pl_mac_link_down(struct phylink_config *config, 1084 unsigned int mode, 1085 phy_interface_t interface) 1086 { 1087 struct enetc_pf *pf = phylink_to_enetc_pf(config); 1088 1089 enetc_mac_enable(&pf->si->hw, false); 1090 } 1091 1092 static const struct phylink_mac_ops enetc_mac_phylink_ops = { 1093 .validate = phylink_generic_validate, 1094 .mac_select_pcs = enetc_pl_mac_select_pcs, 1095 .mac_config = enetc_pl_mac_config, 1096 .mac_link_up = enetc_pl_mac_link_up, 1097 .mac_link_down = enetc_pl_mac_link_down, 1098 }; 1099 1100 static int enetc_phylink_create(struct enetc_ndev_priv *priv, 1101 struct device_node *node) 1102 { 1103 struct enetc_pf *pf = enetc_si_priv(priv->si); 1104 struct phylink *phylink; 1105 int err; 1106 1107 pf->phylink_config.dev = &priv->ndev->dev; 1108 pf->phylink_config.type = PHYLINK_NETDEV; 1109 pf->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | 1110 MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD; 1111 1112 __set_bit(PHY_INTERFACE_MODE_INTERNAL, 1113 pf->phylink_config.supported_interfaces); 1114 __set_bit(PHY_INTERFACE_MODE_SGMII, 1115 pf->phylink_config.supported_interfaces); 1116 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 1117 pf->phylink_config.supported_interfaces); 1118 __set_bit(PHY_INTERFACE_MODE_USXGMII, 1119 pf->phylink_config.supported_interfaces); 1120 phy_interface_set_rgmii(pf->phylink_config.supported_interfaces); 1121 1122 phylink = phylink_create(&pf->phylink_config, of_fwnode_handle(node), 1123 pf->if_mode, &enetc_mac_phylink_ops); 1124 if (IS_ERR(phylink)) { 1125 err = PTR_ERR(phylink); 1126 return err; 1127 } 1128 1129 priv->phylink = phylink; 1130 1131 return 0; 1132 } 1133 1134 static void enetc_phylink_destroy(struct enetc_ndev_priv *priv) 1135 { 1136 phylink_destroy(priv->phylink); 1137 } 1138 1139 /* Initialize the entire shared memory for the flow steering entries 1140 * of this port (PF + VFs) 1141 */ 1142 static int enetc_init_port_rfs_memory(struct enetc_si *si) 1143 { 1144 struct enetc_cmd_rfse rfse = {0}; 1145 struct enetc_hw *hw = &si->hw; 1146 int num_rfs, i, err = 0; 1147 u32 val; 1148 1149 val = enetc_port_rd(hw, ENETC_PRFSCAPR); 1150 num_rfs = ENETC_PRFSCAPR_GET_NUM_RFS(val); 1151 1152 for (i = 0; i < num_rfs; i++) { 1153 err = enetc_set_fs_entry(si, &rfse, i); 1154 if (err) 1155 break; 1156 } 1157 1158 return err; 1159 } 1160 1161 static int enetc_init_port_rss_memory(struct enetc_si *si) 1162 { 1163 struct enetc_hw *hw = &si->hw; 1164 int num_rss, err; 1165 int *rss_table; 1166 u32 val; 1167 1168 val = enetc_port_rd(hw, ENETC_PRSSCAPR); 1169 num_rss = ENETC_PRSSCAPR_GET_NUM_RSS(val); 1170 if (!num_rss) 1171 return 0; 1172 1173 rss_table = kcalloc(num_rss, sizeof(*rss_table), GFP_KERNEL); 1174 if (!rss_table) 1175 return -ENOMEM; 1176 1177 err = enetc_set_rss_table(si, rss_table, num_rss); 1178 1179 kfree(rss_table); 1180 1181 return err; 1182 } 1183 1184 static int enetc_pf_register_with_ierb(struct pci_dev *pdev) 1185 { 1186 struct device_node *node = pdev->dev.of_node; 1187 struct platform_device *ierb_pdev; 1188 struct device_node *ierb_node; 1189 1190 /* Don't register with the IERB if the PF itself is disabled */ 1191 if (!node || !of_device_is_available(node)) 1192 return 0; 1193 1194 ierb_node = of_find_compatible_node(NULL, NULL, 1195 "fsl,ls1028a-enetc-ierb"); 1196 if (!ierb_node || !of_device_is_available(ierb_node)) 1197 return -ENODEV; 1198 1199 ierb_pdev = of_find_device_by_node(ierb_node); 1200 of_node_put(ierb_node); 1201 1202 if (!ierb_pdev) 1203 return -EPROBE_DEFER; 1204 1205 return enetc_ierb_register_pf(ierb_pdev, pdev); 1206 } 1207 1208 static int enetc_pf_probe(struct pci_dev *pdev, 1209 const struct pci_device_id *ent) 1210 { 1211 struct device_node *node = pdev->dev.of_node; 1212 struct enetc_ndev_priv *priv; 1213 struct net_device *ndev; 1214 struct enetc_si *si; 1215 struct enetc_pf *pf; 1216 int err; 1217 1218 err = enetc_pf_register_with_ierb(pdev); 1219 if (err == -EPROBE_DEFER) 1220 return err; 1221 if (err) 1222 dev_warn(&pdev->dev, 1223 "Could not register with IERB driver: %pe, please update the device tree\n", 1224 ERR_PTR(err)); 1225 1226 err = enetc_pci_probe(pdev, KBUILD_MODNAME, sizeof(*pf)); 1227 if (err) 1228 return dev_err_probe(&pdev->dev, err, "PCI probing failed\n"); 1229 1230 si = pci_get_drvdata(pdev); 1231 if (!si->hw.port || !si->hw.global) { 1232 err = -ENODEV; 1233 dev_err(&pdev->dev, "could not map PF space, probing a VF?\n"); 1234 goto err_map_pf_space; 1235 } 1236 1237 err = enetc_setup_cbdr(&pdev->dev, &si->hw, ENETC_CBDR_DEFAULT_SIZE, 1238 &si->cbd_ring); 1239 if (err) 1240 goto err_setup_cbdr; 1241 1242 err = enetc_init_port_rfs_memory(si); 1243 if (err) { 1244 dev_err(&pdev->dev, "Failed to initialize RFS memory\n"); 1245 goto err_init_port_rfs; 1246 } 1247 1248 err = enetc_init_port_rss_memory(si); 1249 if (err) { 1250 dev_err(&pdev->dev, "Failed to initialize RSS memory\n"); 1251 goto err_init_port_rss; 1252 } 1253 1254 if (node && !of_device_is_available(node)) { 1255 dev_info(&pdev->dev, "device is disabled, skipping\n"); 1256 err = -ENODEV; 1257 goto err_device_disabled; 1258 } 1259 1260 pf = enetc_si_priv(si); 1261 pf->si = si; 1262 pf->total_vfs = pci_sriov_get_totalvfs(pdev); 1263 1264 err = enetc_setup_mac_addresses(node, pf); 1265 if (err) 1266 goto err_setup_mac_addresses; 1267 1268 enetc_configure_port(pf); 1269 1270 enetc_get_si_caps(si); 1271 1272 ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); 1273 if (!ndev) { 1274 err = -ENOMEM; 1275 dev_err(&pdev->dev, "netdev creation failed\n"); 1276 goto err_alloc_netdev; 1277 } 1278 1279 enetc_pf_netdev_setup(si, ndev, &enetc_ndev_ops); 1280 1281 priv = netdev_priv(ndev); 1282 1283 enetc_init_si_rings_params(priv); 1284 1285 err = enetc_alloc_si_resources(priv); 1286 if (err) { 1287 dev_err(&pdev->dev, "SI resource alloc failed\n"); 1288 goto err_alloc_si_res; 1289 } 1290 1291 err = enetc_configure_si(priv); 1292 if (err) { 1293 dev_err(&pdev->dev, "Failed to configure SI\n"); 1294 goto err_config_si; 1295 } 1296 1297 err = enetc_alloc_msix(priv); 1298 if (err) { 1299 dev_err(&pdev->dev, "MSIX alloc failed\n"); 1300 goto err_alloc_msix; 1301 } 1302 1303 err = of_get_phy_mode(node, &pf->if_mode); 1304 if (err) { 1305 dev_err(&pdev->dev, "Failed to read PHY mode\n"); 1306 goto err_phy_mode; 1307 } 1308 1309 err = enetc_mdiobus_create(pf, node); 1310 if (err) 1311 goto err_mdiobus_create; 1312 1313 err = enetc_phylink_create(priv, node); 1314 if (err) 1315 goto err_phylink_create; 1316 1317 err = register_netdev(ndev); 1318 if (err) 1319 goto err_reg_netdev; 1320 1321 return 0; 1322 1323 err_reg_netdev: 1324 enetc_phylink_destroy(priv); 1325 err_phylink_create: 1326 enetc_mdiobus_destroy(pf); 1327 err_mdiobus_create: 1328 err_phy_mode: 1329 enetc_free_msix(priv); 1330 err_config_si: 1331 err_alloc_msix: 1332 enetc_free_si_resources(priv); 1333 err_alloc_si_res: 1334 si->ndev = NULL; 1335 free_netdev(ndev); 1336 err_alloc_netdev: 1337 err_init_port_rss: 1338 err_init_port_rfs: 1339 err_device_disabled: 1340 err_setup_mac_addresses: 1341 enetc_teardown_cbdr(&si->cbd_ring); 1342 err_setup_cbdr: 1343 err_map_pf_space: 1344 enetc_pci_remove(pdev); 1345 1346 return err; 1347 } 1348 1349 static void enetc_pf_remove(struct pci_dev *pdev) 1350 { 1351 struct enetc_si *si = pci_get_drvdata(pdev); 1352 struct enetc_pf *pf = enetc_si_priv(si); 1353 struct enetc_ndev_priv *priv; 1354 1355 priv = netdev_priv(si->ndev); 1356 1357 if (pf->num_vfs) 1358 enetc_sriov_configure(pdev, 0); 1359 1360 unregister_netdev(si->ndev); 1361 1362 enetc_phylink_destroy(priv); 1363 enetc_mdiobus_destroy(pf); 1364 1365 enetc_free_msix(priv); 1366 1367 enetc_free_si_resources(priv); 1368 enetc_teardown_cbdr(&si->cbd_ring); 1369 1370 free_netdev(si->ndev); 1371 1372 enetc_pci_remove(pdev); 1373 } 1374 1375 static const struct pci_device_id enetc_pf_id_table[] = { 1376 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PF) }, 1377 { 0, } /* End of table. */ 1378 }; 1379 MODULE_DEVICE_TABLE(pci, enetc_pf_id_table); 1380 1381 static struct pci_driver enetc_pf_driver = { 1382 .name = KBUILD_MODNAME, 1383 .id_table = enetc_pf_id_table, 1384 .probe = enetc_pf_probe, 1385 .remove = enetc_pf_remove, 1386 #ifdef CONFIG_PCI_IOV 1387 .sriov_configure = enetc_sriov_configure, 1388 #endif 1389 }; 1390 module_pci_driver(enetc_pf_driver); 1391 1392 MODULE_DESCRIPTION(ENETC_DRV_NAME_STR); 1393 MODULE_LICENSE("Dual BSD/GPL"); 1394