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 void enetc_set_ptcmsdur(struct enetc_hw *hw, u32 *max_sdu) 520 { 521 int tc; 522 523 for (tc = 0; tc < 8; tc++) { 524 u32 val = ENETC_MAC_MAXFRM_SIZE; 525 526 if (max_sdu[tc]) 527 val = max_sdu[tc] + VLAN_ETH_HLEN; 528 529 enetc_port_wr(hw, ENETC_PTCMSDUR(tc), val); 530 } 531 } 532 533 void enetc_reset_ptcmsdur(struct enetc_hw *hw) 534 { 535 int tc; 536 537 for (tc = 0; tc < 8; tc++) 538 enetc_port_wr(hw, ENETC_PTCMSDUR(tc), ENETC_MAC_MAXFRM_SIZE); 539 } 540 541 static void enetc_configure_port_mac(struct enetc_hw *hw) 542 { 543 enetc_port_wr(hw, ENETC_PM0_MAXFRM, 544 ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE)); 545 546 enetc_reset_ptcmsdur(hw); 547 548 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 549 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC); 550 551 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | 552 ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC); 553 554 /* On LS1028A, the MAC RX FIFO defaults to 2, which is too high 555 * and may lead to RX lock-up under traffic. Set it to 1 instead, 556 * as recommended by the hardware team. 557 */ 558 enetc_port_wr(hw, ENETC_PM0_RX_FIFO, ENETC_PM0_RX_FIFO_VAL); 559 } 560 561 static void enetc_mac_config(struct enetc_hw *hw, phy_interface_t phy_mode) 562 { 563 u32 val; 564 565 if (phy_interface_mode_is_rgmii(phy_mode)) { 566 val = enetc_port_rd(hw, ENETC_PM0_IF_MODE); 567 val &= ~(ENETC_PM0_IFM_EN_AUTO | ENETC_PM0_IFM_IFMODE_MASK); 568 val |= ENETC_PM0_IFM_IFMODE_GMII | ENETC_PM0_IFM_RG; 569 enetc_port_wr(hw, ENETC_PM0_IF_MODE, val); 570 } 571 572 if (phy_mode == PHY_INTERFACE_MODE_USXGMII) { 573 val = ENETC_PM0_IFM_FULL_DPX | ENETC_PM0_IFM_IFMODE_XGMII; 574 enetc_port_wr(hw, ENETC_PM0_IF_MODE, val); 575 } 576 } 577 578 static void enetc_mac_enable(struct enetc_hw *hw, bool en) 579 { 580 u32 val = enetc_port_rd(hw, ENETC_PM0_CMD_CFG); 581 582 val &= ~(ENETC_PM0_TX_EN | ENETC_PM0_RX_EN); 583 val |= en ? (ENETC_PM0_TX_EN | ENETC_PM0_RX_EN) : 0; 584 585 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, val); 586 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, val); 587 } 588 589 static void enetc_configure_port_pmac(struct enetc_hw *hw) 590 { 591 u32 temp; 592 593 /* Set pMAC step lock */ 594 temp = enetc_port_rd(hw, ENETC_PFPMR); 595 enetc_port_wr(hw, ENETC_PFPMR, 596 temp | ENETC_PFPMR_PMACE | ENETC_PFPMR_MWLM); 597 598 temp = enetc_port_rd(hw, ENETC_MMCSR); 599 enetc_port_wr(hw, ENETC_MMCSR, temp | ENETC_MMCSR_ME); 600 } 601 602 static void enetc_configure_port(struct enetc_pf *pf) 603 { 604 u8 hash_key[ENETC_RSSHASH_KEY_SIZE]; 605 struct enetc_hw *hw = &pf->si->hw; 606 607 enetc_configure_port_pmac(hw); 608 609 enetc_configure_port_mac(hw); 610 611 enetc_port_si_configure(pf->si); 612 613 /* set up hash key */ 614 get_random_bytes(hash_key, ENETC_RSSHASH_KEY_SIZE); 615 enetc_set_rss_key(hw, hash_key); 616 617 /* split up RFS entries */ 618 enetc_port_assign_rfs_entries(pf->si); 619 620 /* enforce VLAN promisc mode for all SIs */ 621 pf->vlan_promisc_simap = ENETC_VLAN_PROMISC_MAP_ALL; 622 enetc_set_vlan_promisc(hw, pf->vlan_promisc_simap); 623 624 enetc_port_wr(hw, ENETC_PSIPMR, 0); 625 626 /* enable port */ 627 enetc_port_wr(hw, ENETC_PMR, ENETC_PMR_EN); 628 } 629 630 /* Messaging */ 631 static u16 enetc_msg_pf_set_vf_primary_mac_addr(struct enetc_pf *pf, 632 int vf_id) 633 { 634 struct enetc_vf_state *vf_state = &pf->vf_state[vf_id]; 635 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 636 struct enetc_msg_cmd_set_primary_mac *cmd; 637 struct device *dev = &pf->si->pdev->dev; 638 u16 cmd_id; 639 char *addr; 640 641 cmd = (struct enetc_msg_cmd_set_primary_mac *)msg->vaddr; 642 cmd_id = cmd->header.id; 643 if (cmd_id != ENETC_MSG_CMD_MNG_ADD) 644 return ENETC_MSG_CMD_STATUS_FAIL; 645 646 addr = cmd->mac.sa_data; 647 if (vf_state->flags & ENETC_VF_FLAG_PF_SET_MAC) 648 dev_warn(dev, "Attempt to override PF set mac addr for VF%d\n", 649 vf_id); 650 else 651 enetc_pf_set_primary_mac_addr(&pf->si->hw, vf_id + 1, addr); 652 653 return ENETC_MSG_CMD_STATUS_OK; 654 } 655 656 void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int vf_id, u16 *status) 657 { 658 struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id]; 659 struct device *dev = &pf->si->pdev->dev; 660 struct enetc_msg_cmd_header *cmd_hdr; 661 u16 cmd_type; 662 663 *status = ENETC_MSG_CMD_STATUS_OK; 664 cmd_hdr = (struct enetc_msg_cmd_header *)msg->vaddr; 665 cmd_type = cmd_hdr->type; 666 667 switch (cmd_type) { 668 case ENETC_MSG_CMD_MNG_MAC: 669 *status = enetc_msg_pf_set_vf_primary_mac_addr(pf, vf_id); 670 break; 671 default: 672 dev_err(dev, "command not supported (cmd_type: 0x%x)\n", 673 cmd_type); 674 } 675 } 676 677 #ifdef CONFIG_PCI_IOV 678 static int enetc_sriov_configure(struct pci_dev *pdev, int num_vfs) 679 { 680 struct enetc_si *si = pci_get_drvdata(pdev); 681 struct enetc_pf *pf = enetc_si_priv(si); 682 int err; 683 684 if (!num_vfs) { 685 enetc_msg_psi_free(pf); 686 kfree(pf->vf_state); 687 pf->num_vfs = 0; 688 pci_disable_sriov(pdev); 689 } else { 690 pf->num_vfs = num_vfs; 691 692 pf->vf_state = kcalloc(num_vfs, sizeof(struct enetc_vf_state), 693 GFP_KERNEL); 694 if (!pf->vf_state) { 695 pf->num_vfs = 0; 696 return -ENOMEM; 697 } 698 699 err = enetc_msg_psi_init(pf); 700 if (err) { 701 dev_err(&pdev->dev, "enetc_msg_psi_init (%d)\n", err); 702 goto err_msg_psi; 703 } 704 705 err = pci_enable_sriov(pdev, num_vfs); 706 if (err) { 707 dev_err(&pdev->dev, "pci_enable_sriov err %d\n", err); 708 goto err_en_sriov; 709 } 710 } 711 712 return num_vfs; 713 714 err_en_sriov: 715 enetc_msg_psi_free(pf); 716 err_msg_psi: 717 kfree(pf->vf_state); 718 pf->num_vfs = 0; 719 720 return err; 721 } 722 #else 723 #define enetc_sriov_configure(pdev, num_vfs) (void)0 724 #endif 725 726 static int enetc_pf_set_features(struct net_device *ndev, 727 netdev_features_t features) 728 { 729 netdev_features_t changed = ndev->features ^ features; 730 struct enetc_ndev_priv *priv = netdev_priv(ndev); 731 int err; 732 733 if (changed & NETIF_F_HW_TC) { 734 err = enetc_set_psfp(ndev, !!(features & NETIF_F_HW_TC)); 735 if (err) 736 return err; 737 } 738 739 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) { 740 struct enetc_pf *pf = enetc_si_priv(priv->si); 741 742 if (!!(features & NETIF_F_HW_VLAN_CTAG_FILTER)) 743 enetc_disable_si_vlan_promisc(pf, 0); 744 else 745 enetc_enable_si_vlan_promisc(pf, 0); 746 } 747 748 if (changed & NETIF_F_LOOPBACK) 749 enetc_set_loopback(ndev, !!(features & NETIF_F_LOOPBACK)); 750 751 enetc_set_features(ndev, features); 752 753 return 0; 754 } 755 756 static int enetc_pf_setup_tc(struct net_device *ndev, enum tc_setup_type type, 757 void *type_data) 758 { 759 switch (type) { 760 case TC_QUERY_CAPS: 761 return enetc_qos_query_caps(ndev, type_data); 762 case TC_SETUP_QDISC_MQPRIO: 763 return enetc_setup_tc_mqprio(ndev, type_data); 764 case TC_SETUP_QDISC_TAPRIO: 765 return enetc_setup_tc_taprio(ndev, type_data); 766 case TC_SETUP_QDISC_CBS: 767 return enetc_setup_tc_cbs(ndev, type_data); 768 case TC_SETUP_QDISC_ETF: 769 return enetc_setup_tc_txtime(ndev, type_data); 770 case TC_SETUP_BLOCK: 771 return enetc_setup_tc_psfp(ndev, type_data); 772 default: 773 return -EOPNOTSUPP; 774 } 775 } 776 777 static const struct net_device_ops enetc_ndev_ops = { 778 .ndo_open = enetc_open, 779 .ndo_stop = enetc_close, 780 .ndo_start_xmit = enetc_xmit, 781 .ndo_get_stats = enetc_get_stats, 782 .ndo_set_mac_address = enetc_pf_set_mac_addr, 783 .ndo_set_rx_mode = enetc_pf_set_rx_mode, 784 .ndo_vlan_rx_add_vid = enetc_vlan_rx_add_vid, 785 .ndo_vlan_rx_kill_vid = enetc_vlan_rx_del_vid, 786 .ndo_set_vf_mac = enetc_pf_set_vf_mac, 787 .ndo_set_vf_vlan = enetc_pf_set_vf_vlan, 788 .ndo_set_vf_spoofchk = enetc_pf_set_vf_spoofchk, 789 .ndo_set_features = enetc_pf_set_features, 790 .ndo_eth_ioctl = enetc_ioctl, 791 .ndo_setup_tc = enetc_pf_setup_tc, 792 .ndo_bpf = enetc_setup_bpf, 793 .ndo_xdp_xmit = enetc_xdp_xmit, 794 }; 795 796 static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev, 797 const struct net_device_ops *ndev_ops) 798 { 799 struct enetc_ndev_priv *priv = netdev_priv(ndev); 800 801 SET_NETDEV_DEV(ndev, &si->pdev->dev); 802 priv->ndev = ndev; 803 priv->si = si; 804 priv->dev = &si->pdev->dev; 805 si->ndev = ndev; 806 807 priv->msg_enable = (NETIF_MSG_WOL << 1) - 1; 808 ndev->netdev_ops = ndev_ops; 809 enetc_set_ethtool_ops(ndev); 810 ndev->watchdog_timeo = 5 * HZ; 811 ndev->max_mtu = ENETC_MAX_MTU; 812 813 ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | 814 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 815 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK | 816 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; 817 ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM | 818 NETIF_F_HW_VLAN_CTAG_TX | 819 NETIF_F_HW_VLAN_CTAG_RX | 820 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6; 821 ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM | 822 NETIF_F_TSO | NETIF_F_TSO6; 823 824 if (si->num_rss) 825 ndev->hw_features |= NETIF_F_RXHASH; 826 827 ndev->priv_flags |= IFF_UNICAST_FLT; 828 829 if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) { 830 priv->active_offloads |= ENETC_F_QCI; 831 ndev->features |= NETIF_F_HW_TC; 832 ndev->hw_features |= NETIF_F_HW_TC; 833 } 834 835 /* pick up primary MAC address from SI */ 836 enetc_load_primary_mac_addr(&si->hw, ndev); 837 } 838 839 static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np) 840 { 841 struct device *dev = &pf->si->pdev->dev; 842 struct enetc_mdio_priv *mdio_priv; 843 struct mii_bus *bus; 844 int err; 845 846 bus = devm_mdiobus_alloc_size(dev, sizeof(*mdio_priv)); 847 if (!bus) 848 return -ENOMEM; 849 850 bus->name = "Freescale ENETC MDIO Bus"; 851 bus->read = enetc_mdio_read; 852 bus->write = enetc_mdio_write; 853 bus->parent = dev; 854 mdio_priv = bus->priv; 855 mdio_priv->hw = &pf->si->hw; 856 mdio_priv->mdio_base = ENETC_EMDIO_BASE; 857 snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev_name(dev)); 858 859 err = of_mdiobus_register(bus, np); 860 if (err) 861 return dev_err_probe(dev, err, "cannot register MDIO bus\n"); 862 863 pf->mdio = bus; 864 865 return 0; 866 } 867 868 static void enetc_mdio_remove(struct enetc_pf *pf) 869 { 870 if (pf->mdio) 871 mdiobus_unregister(pf->mdio); 872 } 873 874 static int enetc_imdio_create(struct enetc_pf *pf) 875 { 876 struct device *dev = &pf->si->pdev->dev; 877 struct enetc_mdio_priv *mdio_priv; 878 struct phylink_pcs *phylink_pcs; 879 struct mdio_device *mdio_device; 880 struct mii_bus *bus; 881 int err; 882 883 bus = mdiobus_alloc_size(sizeof(*mdio_priv)); 884 if (!bus) 885 return -ENOMEM; 886 887 bus->name = "Freescale ENETC internal MDIO Bus"; 888 bus->read = enetc_mdio_read; 889 bus->write = enetc_mdio_write; 890 bus->parent = dev; 891 bus->phy_mask = ~0; 892 mdio_priv = bus->priv; 893 mdio_priv->hw = &pf->si->hw; 894 mdio_priv->mdio_base = ENETC_PM_IMDIO_BASE; 895 snprintf(bus->id, MII_BUS_ID_SIZE, "%s-imdio", dev_name(dev)); 896 897 err = mdiobus_register(bus); 898 if (err) { 899 dev_err(dev, "cannot register internal MDIO bus (%d)\n", err); 900 goto free_mdio_bus; 901 } 902 903 mdio_device = mdio_device_create(bus, 0); 904 if (IS_ERR(mdio_device)) { 905 err = PTR_ERR(mdio_device); 906 dev_err(dev, "cannot create mdio device (%d)\n", err); 907 goto unregister_mdiobus; 908 } 909 910 phylink_pcs = lynx_pcs_create(mdio_device); 911 if (!phylink_pcs) { 912 mdio_device_free(mdio_device); 913 err = -ENOMEM; 914 dev_err(dev, "cannot create lynx pcs (%d)\n", err); 915 goto unregister_mdiobus; 916 } 917 918 pf->imdio = bus; 919 pf->pcs = phylink_pcs; 920 921 return 0; 922 923 unregister_mdiobus: 924 mdiobus_unregister(bus); 925 free_mdio_bus: 926 mdiobus_free(bus); 927 return err; 928 } 929 930 static void enetc_imdio_remove(struct enetc_pf *pf) 931 { 932 struct mdio_device *mdio_device; 933 934 if (pf->pcs) { 935 mdio_device = lynx_get_mdio_device(pf->pcs); 936 mdio_device_free(mdio_device); 937 lynx_pcs_destroy(pf->pcs); 938 } 939 if (pf->imdio) { 940 mdiobus_unregister(pf->imdio); 941 mdiobus_free(pf->imdio); 942 } 943 } 944 945 static bool enetc_port_has_pcs(struct enetc_pf *pf) 946 { 947 return (pf->if_mode == PHY_INTERFACE_MODE_SGMII || 948 pf->if_mode == PHY_INTERFACE_MODE_2500BASEX || 949 pf->if_mode == PHY_INTERFACE_MODE_USXGMII); 950 } 951 952 static int enetc_mdiobus_create(struct enetc_pf *pf, struct device_node *node) 953 { 954 struct device_node *mdio_np; 955 int err; 956 957 mdio_np = of_get_child_by_name(node, "mdio"); 958 if (mdio_np) { 959 err = enetc_mdio_probe(pf, mdio_np); 960 961 of_node_put(mdio_np); 962 if (err) 963 return err; 964 } 965 966 if (enetc_port_has_pcs(pf)) { 967 err = enetc_imdio_create(pf); 968 if (err) { 969 enetc_mdio_remove(pf); 970 return err; 971 } 972 } 973 974 return 0; 975 } 976 977 static void enetc_mdiobus_destroy(struct enetc_pf *pf) 978 { 979 enetc_mdio_remove(pf); 980 enetc_imdio_remove(pf); 981 } 982 983 static struct phylink_pcs * 984 enetc_pl_mac_select_pcs(struct phylink_config *config, phy_interface_t iface) 985 { 986 struct enetc_pf *pf = phylink_to_enetc_pf(config); 987 988 return pf->pcs; 989 } 990 991 static void enetc_pl_mac_config(struct phylink_config *config, 992 unsigned int mode, 993 const struct phylink_link_state *state) 994 { 995 struct enetc_pf *pf = phylink_to_enetc_pf(config); 996 997 enetc_mac_config(&pf->si->hw, state->interface); 998 } 999 1000 static void enetc_force_rgmii_mac(struct enetc_hw *hw, int speed, int duplex) 1001 { 1002 u32 old_val, val; 1003 1004 old_val = val = enetc_port_rd(hw, ENETC_PM0_IF_MODE); 1005 1006 if (speed == SPEED_1000) { 1007 val &= ~ENETC_PM0_IFM_SSP_MASK; 1008 val |= ENETC_PM0_IFM_SSP_1000; 1009 } else if (speed == SPEED_100) { 1010 val &= ~ENETC_PM0_IFM_SSP_MASK; 1011 val |= ENETC_PM0_IFM_SSP_100; 1012 } else if (speed == SPEED_10) { 1013 val &= ~ENETC_PM0_IFM_SSP_MASK; 1014 val |= ENETC_PM0_IFM_SSP_10; 1015 } 1016 1017 if (duplex == DUPLEX_FULL) 1018 val |= ENETC_PM0_IFM_FULL_DPX; 1019 else 1020 val &= ~ENETC_PM0_IFM_FULL_DPX; 1021 1022 if (val == old_val) 1023 return; 1024 1025 enetc_port_wr(hw, ENETC_PM0_IF_MODE, val); 1026 } 1027 1028 static void enetc_pl_mac_link_up(struct phylink_config *config, 1029 struct phy_device *phy, unsigned int mode, 1030 phy_interface_t interface, int speed, 1031 int duplex, bool tx_pause, bool rx_pause) 1032 { 1033 struct enetc_pf *pf = phylink_to_enetc_pf(config); 1034 u32 pause_off_thresh = 0, pause_on_thresh = 0; 1035 u32 init_quanta = 0, refresh_quanta = 0; 1036 struct enetc_hw *hw = &pf->si->hw; 1037 struct enetc_ndev_priv *priv; 1038 u32 rbmr, cmd_cfg; 1039 int idx; 1040 1041 priv = netdev_priv(pf->si->ndev); 1042 1043 if (pf->si->hw_features & ENETC_SI_F_QBV) 1044 enetc_sched_speed_set(priv, speed); 1045 1046 if (!phylink_autoneg_inband(mode) && 1047 phy_interface_mode_is_rgmii(interface)) 1048 enetc_force_rgmii_mac(hw, speed, duplex); 1049 1050 /* Flow control */ 1051 for (idx = 0; idx < priv->num_rx_rings; idx++) { 1052 rbmr = enetc_rxbdr_rd(hw, idx, ENETC_RBMR); 1053 1054 if (tx_pause) 1055 rbmr |= ENETC_RBMR_CM; 1056 else 1057 rbmr &= ~ENETC_RBMR_CM; 1058 1059 enetc_rxbdr_wr(hw, idx, ENETC_RBMR, rbmr); 1060 } 1061 1062 if (tx_pause) { 1063 /* When the port first enters congestion, send a PAUSE request 1064 * with the maximum number of quanta. When the port exits 1065 * congestion, it will automatically send a PAUSE frame with 1066 * zero quanta. 1067 */ 1068 init_quanta = 0xffff; 1069 1070 /* Also, set up the refresh timer to send follow-up PAUSE 1071 * frames at half the quanta value, in case the congestion 1072 * condition persists. 1073 */ 1074 refresh_quanta = 0xffff / 2; 1075 1076 /* Start emitting PAUSE frames when 3 large frames (or more 1077 * smaller frames) have accumulated in the FIFO waiting to be 1078 * DMAed to the RX ring. 1079 */ 1080 pause_on_thresh = 3 * ENETC_MAC_MAXFRM_SIZE; 1081 pause_off_thresh = 1 * ENETC_MAC_MAXFRM_SIZE; 1082 } 1083 1084 enetc_port_wr(hw, ENETC_PM0_PAUSE_QUANTA, init_quanta); 1085 enetc_port_wr(hw, ENETC_PM1_PAUSE_QUANTA, init_quanta); 1086 enetc_port_wr(hw, ENETC_PM0_PAUSE_THRESH, refresh_quanta); 1087 enetc_port_wr(hw, ENETC_PM1_PAUSE_THRESH, refresh_quanta); 1088 enetc_port_wr(hw, ENETC_PPAUONTR, pause_on_thresh); 1089 enetc_port_wr(hw, ENETC_PPAUOFFTR, pause_off_thresh); 1090 1091 cmd_cfg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG); 1092 1093 if (rx_pause) 1094 cmd_cfg &= ~ENETC_PM0_PAUSE_IGN; 1095 else 1096 cmd_cfg |= ENETC_PM0_PAUSE_IGN; 1097 1098 enetc_port_wr(hw, ENETC_PM0_CMD_CFG, cmd_cfg); 1099 enetc_port_wr(hw, ENETC_PM1_CMD_CFG, cmd_cfg); 1100 1101 enetc_mac_enable(hw, true); 1102 } 1103 1104 static void enetc_pl_mac_link_down(struct phylink_config *config, 1105 unsigned int mode, 1106 phy_interface_t interface) 1107 { 1108 struct enetc_pf *pf = phylink_to_enetc_pf(config); 1109 1110 enetc_mac_enable(&pf->si->hw, false); 1111 } 1112 1113 static const struct phylink_mac_ops enetc_mac_phylink_ops = { 1114 .mac_select_pcs = enetc_pl_mac_select_pcs, 1115 .mac_config = enetc_pl_mac_config, 1116 .mac_link_up = enetc_pl_mac_link_up, 1117 .mac_link_down = enetc_pl_mac_link_down, 1118 }; 1119 1120 static int enetc_phylink_create(struct enetc_ndev_priv *priv, 1121 struct device_node *node) 1122 { 1123 struct enetc_pf *pf = enetc_si_priv(priv->si); 1124 struct phylink *phylink; 1125 int err; 1126 1127 pf->phylink_config.dev = &priv->ndev->dev; 1128 pf->phylink_config.type = PHYLINK_NETDEV; 1129 pf->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | 1130 MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD; 1131 1132 __set_bit(PHY_INTERFACE_MODE_INTERNAL, 1133 pf->phylink_config.supported_interfaces); 1134 __set_bit(PHY_INTERFACE_MODE_SGMII, 1135 pf->phylink_config.supported_interfaces); 1136 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 1137 pf->phylink_config.supported_interfaces); 1138 __set_bit(PHY_INTERFACE_MODE_USXGMII, 1139 pf->phylink_config.supported_interfaces); 1140 phy_interface_set_rgmii(pf->phylink_config.supported_interfaces); 1141 1142 phylink = phylink_create(&pf->phylink_config, of_fwnode_handle(node), 1143 pf->if_mode, &enetc_mac_phylink_ops); 1144 if (IS_ERR(phylink)) { 1145 err = PTR_ERR(phylink); 1146 return err; 1147 } 1148 1149 priv->phylink = phylink; 1150 1151 return 0; 1152 } 1153 1154 static void enetc_phylink_destroy(struct enetc_ndev_priv *priv) 1155 { 1156 phylink_destroy(priv->phylink); 1157 } 1158 1159 /* Initialize the entire shared memory for the flow steering entries 1160 * of this port (PF + VFs) 1161 */ 1162 static int enetc_init_port_rfs_memory(struct enetc_si *si) 1163 { 1164 struct enetc_cmd_rfse rfse = {0}; 1165 struct enetc_hw *hw = &si->hw; 1166 int num_rfs, i, err = 0; 1167 u32 val; 1168 1169 val = enetc_port_rd(hw, ENETC_PRFSCAPR); 1170 num_rfs = ENETC_PRFSCAPR_GET_NUM_RFS(val); 1171 1172 for (i = 0; i < num_rfs; i++) { 1173 err = enetc_set_fs_entry(si, &rfse, i); 1174 if (err) 1175 break; 1176 } 1177 1178 return err; 1179 } 1180 1181 static int enetc_init_port_rss_memory(struct enetc_si *si) 1182 { 1183 struct enetc_hw *hw = &si->hw; 1184 int num_rss, err; 1185 int *rss_table; 1186 u32 val; 1187 1188 val = enetc_port_rd(hw, ENETC_PRSSCAPR); 1189 num_rss = ENETC_PRSSCAPR_GET_NUM_RSS(val); 1190 if (!num_rss) 1191 return 0; 1192 1193 rss_table = kcalloc(num_rss, sizeof(*rss_table), GFP_KERNEL); 1194 if (!rss_table) 1195 return -ENOMEM; 1196 1197 err = enetc_set_rss_table(si, rss_table, num_rss); 1198 1199 kfree(rss_table); 1200 1201 return err; 1202 } 1203 1204 static int enetc_pf_register_with_ierb(struct pci_dev *pdev) 1205 { 1206 struct device_node *node = pdev->dev.of_node; 1207 struct platform_device *ierb_pdev; 1208 struct device_node *ierb_node; 1209 1210 /* Don't register with the IERB if the PF itself is disabled */ 1211 if (!node || !of_device_is_available(node)) 1212 return 0; 1213 1214 ierb_node = of_find_compatible_node(NULL, NULL, 1215 "fsl,ls1028a-enetc-ierb"); 1216 if (!ierb_node || !of_device_is_available(ierb_node)) 1217 return -ENODEV; 1218 1219 ierb_pdev = of_find_device_by_node(ierb_node); 1220 of_node_put(ierb_node); 1221 1222 if (!ierb_pdev) 1223 return -EPROBE_DEFER; 1224 1225 return enetc_ierb_register_pf(ierb_pdev, pdev); 1226 } 1227 1228 static int enetc_pf_probe(struct pci_dev *pdev, 1229 const struct pci_device_id *ent) 1230 { 1231 struct device_node *node = pdev->dev.of_node; 1232 struct enetc_ndev_priv *priv; 1233 struct net_device *ndev; 1234 struct enetc_si *si; 1235 struct enetc_pf *pf; 1236 int err; 1237 1238 err = enetc_pf_register_with_ierb(pdev); 1239 if (err == -EPROBE_DEFER) 1240 return err; 1241 if (err) 1242 dev_warn(&pdev->dev, 1243 "Could not register with IERB driver: %pe, please update the device tree\n", 1244 ERR_PTR(err)); 1245 1246 err = enetc_pci_probe(pdev, KBUILD_MODNAME, sizeof(*pf)); 1247 if (err) 1248 return dev_err_probe(&pdev->dev, err, "PCI probing failed\n"); 1249 1250 si = pci_get_drvdata(pdev); 1251 if (!si->hw.port || !si->hw.global) { 1252 err = -ENODEV; 1253 dev_err(&pdev->dev, "could not map PF space, probing a VF?\n"); 1254 goto err_map_pf_space; 1255 } 1256 1257 err = enetc_setup_cbdr(&pdev->dev, &si->hw, ENETC_CBDR_DEFAULT_SIZE, 1258 &si->cbd_ring); 1259 if (err) 1260 goto err_setup_cbdr; 1261 1262 err = enetc_init_port_rfs_memory(si); 1263 if (err) { 1264 dev_err(&pdev->dev, "Failed to initialize RFS memory\n"); 1265 goto err_init_port_rfs; 1266 } 1267 1268 err = enetc_init_port_rss_memory(si); 1269 if (err) { 1270 dev_err(&pdev->dev, "Failed to initialize RSS memory\n"); 1271 goto err_init_port_rss; 1272 } 1273 1274 if (node && !of_device_is_available(node)) { 1275 dev_info(&pdev->dev, "device is disabled, skipping\n"); 1276 err = -ENODEV; 1277 goto err_device_disabled; 1278 } 1279 1280 pf = enetc_si_priv(si); 1281 pf->si = si; 1282 pf->total_vfs = pci_sriov_get_totalvfs(pdev); 1283 1284 err = enetc_setup_mac_addresses(node, pf); 1285 if (err) 1286 goto err_setup_mac_addresses; 1287 1288 enetc_configure_port(pf); 1289 1290 enetc_get_si_caps(si); 1291 1292 ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS); 1293 if (!ndev) { 1294 err = -ENOMEM; 1295 dev_err(&pdev->dev, "netdev creation failed\n"); 1296 goto err_alloc_netdev; 1297 } 1298 1299 enetc_pf_netdev_setup(si, ndev, &enetc_ndev_ops); 1300 1301 priv = netdev_priv(ndev); 1302 1303 enetc_init_si_rings_params(priv); 1304 1305 err = enetc_alloc_si_resources(priv); 1306 if (err) { 1307 dev_err(&pdev->dev, "SI resource alloc failed\n"); 1308 goto err_alloc_si_res; 1309 } 1310 1311 err = enetc_configure_si(priv); 1312 if (err) { 1313 dev_err(&pdev->dev, "Failed to configure SI\n"); 1314 goto err_config_si; 1315 } 1316 1317 err = enetc_alloc_msix(priv); 1318 if (err) { 1319 dev_err(&pdev->dev, "MSIX alloc failed\n"); 1320 goto err_alloc_msix; 1321 } 1322 1323 err = of_get_phy_mode(node, &pf->if_mode); 1324 if (err) { 1325 dev_err(&pdev->dev, "Failed to read PHY mode\n"); 1326 goto err_phy_mode; 1327 } 1328 1329 err = enetc_mdiobus_create(pf, node); 1330 if (err) 1331 goto err_mdiobus_create; 1332 1333 err = enetc_phylink_create(priv, node); 1334 if (err) 1335 goto err_phylink_create; 1336 1337 err = register_netdev(ndev); 1338 if (err) 1339 goto err_reg_netdev; 1340 1341 return 0; 1342 1343 err_reg_netdev: 1344 enetc_phylink_destroy(priv); 1345 err_phylink_create: 1346 enetc_mdiobus_destroy(pf); 1347 err_mdiobus_create: 1348 err_phy_mode: 1349 enetc_free_msix(priv); 1350 err_config_si: 1351 err_alloc_msix: 1352 enetc_free_si_resources(priv); 1353 err_alloc_si_res: 1354 si->ndev = NULL; 1355 free_netdev(ndev); 1356 err_alloc_netdev: 1357 err_init_port_rss: 1358 err_init_port_rfs: 1359 err_device_disabled: 1360 err_setup_mac_addresses: 1361 enetc_teardown_cbdr(&si->cbd_ring); 1362 err_setup_cbdr: 1363 err_map_pf_space: 1364 enetc_pci_remove(pdev); 1365 1366 return err; 1367 } 1368 1369 static void enetc_pf_remove(struct pci_dev *pdev) 1370 { 1371 struct enetc_si *si = pci_get_drvdata(pdev); 1372 struct enetc_pf *pf = enetc_si_priv(si); 1373 struct enetc_ndev_priv *priv; 1374 1375 priv = netdev_priv(si->ndev); 1376 1377 if (pf->num_vfs) 1378 enetc_sriov_configure(pdev, 0); 1379 1380 unregister_netdev(si->ndev); 1381 1382 enetc_phylink_destroy(priv); 1383 enetc_mdiobus_destroy(pf); 1384 1385 enetc_free_msix(priv); 1386 1387 enetc_free_si_resources(priv); 1388 enetc_teardown_cbdr(&si->cbd_ring); 1389 1390 free_netdev(si->ndev); 1391 1392 enetc_pci_remove(pdev); 1393 } 1394 1395 static const struct pci_device_id enetc_pf_id_table[] = { 1396 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PF) }, 1397 { 0, } /* End of table. */ 1398 }; 1399 MODULE_DEVICE_TABLE(pci, enetc_pf_id_table); 1400 1401 static struct pci_driver enetc_pf_driver = { 1402 .name = KBUILD_MODNAME, 1403 .id_table = enetc_pf_id_table, 1404 .probe = enetc_pf_probe, 1405 .remove = enetc_pf_remove, 1406 #ifdef CONFIG_PCI_IOV 1407 .sriov_configure = enetc_sriov_configure, 1408 #endif 1409 }; 1410 module_pci_driver(enetc_pf_driver); 1411 1412 MODULE_DESCRIPTION(ENETC_DRV_NAME_STR); 1413 MODULE_LICENSE("Dual BSD/GPL"); 1414