1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * DPAA2 Ethernet Switch driver 4 * 5 * Copyright 2014-2016 Freescale Semiconductor Inc. 6 * Copyright 2017-2021 NXP 7 * 8 */ 9 10 #include <linux/module.h> 11 12 #include <linux/interrupt.h> 13 #include <linux/msi.h> 14 #include <linux/kthread.h> 15 #include <linux/workqueue.h> 16 #include <linux/iommu.h> 17 #include <net/pkt_cls.h> 18 19 #include <linux/fsl/mc.h> 20 21 #include "dpaa2-switch.h" 22 23 /* Minimal supported DPSW version */ 24 #define DPSW_MIN_VER_MAJOR 8 25 #define DPSW_MIN_VER_MINOR 9 26 27 #define DEFAULT_VLAN_ID 1 28 29 static u16 dpaa2_switch_port_get_fdb_id(struct ethsw_port_priv *port_priv) 30 { 31 return port_priv->fdb->fdb_id; 32 } 33 34 static struct dpaa2_switch_fdb *dpaa2_switch_fdb_get_unused(struct ethsw_core *ethsw) 35 { 36 int i; 37 38 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) 39 if (!ethsw->fdbs[i].in_use) 40 return ðsw->fdbs[i]; 41 return NULL; 42 } 43 44 static struct dpaa2_switch_filter_block * 45 dpaa2_switch_filter_block_get_unused(struct ethsw_core *ethsw) 46 { 47 int i; 48 49 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) 50 if (!ethsw->filter_blocks[i].in_use) 51 return ðsw->filter_blocks[i]; 52 return NULL; 53 } 54 55 static u16 dpaa2_switch_port_set_fdb(struct ethsw_port_priv *port_priv, 56 struct net_device *bridge_dev) 57 { 58 struct ethsw_port_priv *other_port_priv = NULL; 59 struct dpaa2_switch_fdb *fdb; 60 struct net_device *other_dev; 61 struct list_head *iter; 62 63 /* If we leave a bridge (bridge_dev is NULL), find an unused 64 * FDB and use that. 65 */ 66 if (!bridge_dev) { 67 fdb = dpaa2_switch_fdb_get_unused(port_priv->ethsw_data); 68 69 /* If there is no unused FDB, we must be the last port that 70 * leaves the last bridge, all the others are standalone. We 71 * can just keep the FDB that we already have. 72 */ 73 74 if (!fdb) { 75 port_priv->fdb->bridge_dev = NULL; 76 return 0; 77 } 78 79 port_priv->fdb = fdb; 80 port_priv->fdb->in_use = true; 81 port_priv->fdb->bridge_dev = NULL; 82 return 0; 83 } 84 85 /* The below call to netdev_for_each_lower_dev() demands the RTNL lock 86 * being held. Assert on it so that it's easier to catch new code 87 * paths that reach this point without the RTNL lock. 88 */ 89 ASSERT_RTNL(); 90 91 /* If part of a bridge, use the FDB of the first dpaa2 switch interface 92 * to be present in that bridge 93 */ 94 netdev_for_each_lower_dev(bridge_dev, other_dev, iter) { 95 if (!dpaa2_switch_port_dev_check(other_dev)) 96 continue; 97 98 if (other_dev == port_priv->netdev) 99 continue; 100 101 other_port_priv = netdev_priv(other_dev); 102 break; 103 } 104 105 /* The current port is about to change its FDB to the one used by the 106 * first port that joined the bridge. 107 */ 108 if (other_port_priv) { 109 /* The previous FDB is about to become unused, since the 110 * interface is no longer standalone. 111 */ 112 port_priv->fdb->in_use = false; 113 port_priv->fdb->bridge_dev = NULL; 114 115 /* Get a reference to the new FDB */ 116 port_priv->fdb = other_port_priv->fdb; 117 } 118 119 /* Keep track of the new upper bridge device */ 120 port_priv->fdb->bridge_dev = bridge_dev; 121 122 return 0; 123 } 124 125 static void dpaa2_switch_fdb_get_flood_cfg(struct ethsw_core *ethsw, u16 fdb_id, 126 enum dpsw_flood_type type, 127 struct dpsw_egress_flood_cfg *cfg) 128 { 129 int i = 0, j; 130 131 memset(cfg, 0, sizeof(*cfg)); 132 133 /* Add all the DPAA2 switch ports found in the same bridging domain to 134 * the egress flooding domain 135 */ 136 for (j = 0; j < ethsw->sw_attr.num_ifs; j++) { 137 if (!ethsw->ports[j]) 138 continue; 139 if (ethsw->ports[j]->fdb->fdb_id != fdb_id) 140 continue; 141 142 if (type == DPSW_BROADCAST && ethsw->ports[j]->bcast_flood) 143 cfg->if_id[i++] = ethsw->ports[j]->idx; 144 else if (type == DPSW_FLOODING && ethsw->ports[j]->ucast_flood) 145 cfg->if_id[i++] = ethsw->ports[j]->idx; 146 } 147 148 /* Add the CTRL interface to the egress flooding domain */ 149 cfg->if_id[i++] = ethsw->sw_attr.num_ifs; 150 151 cfg->fdb_id = fdb_id; 152 cfg->flood_type = type; 153 cfg->num_ifs = i; 154 } 155 156 static int dpaa2_switch_fdb_set_egress_flood(struct ethsw_core *ethsw, u16 fdb_id) 157 { 158 struct dpsw_egress_flood_cfg flood_cfg; 159 int err; 160 161 /* Setup broadcast flooding domain */ 162 dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_BROADCAST, &flood_cfg); 163 err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle, 164 &flood_cfg); 165 if (err) { 166 dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err); 167 return err; 168 } 169 170 /* Setup unknown flooding domain */ 171 dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_FLOODING, &flood_cfg); 172 err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle, 173 &flood_cfg); 174 if (err) { 175 dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err); 176 return err; 177 } 178 179 return 0; 180 } 181 182 static void *dpaa2_iova_to_virt(struct iommu_domain *domain, 183 dma_addr_t iova_addr) 184 { 185 phys_addr_t phys_addr; 186 187 phys_addr = domain ? iommu_iova_to_phys(domain, iova_addr) : iova_addr; 188 189 return phys_to_virt(phys_addr); 190 } 191 192 static int dpaa2_switch_add_vlan(struct ethsw_port_priv *port_priv, u16 vid) 193 { 194 struct ethsw_core *ethsw = port_priv->ethsw_data; 195 struct dpsw_vlan_cfg vcfg = {0}; 196 int err; 197 198 vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 199 err = dpsw_vlan_add(ethsw->mc_io, 0, 200 ethsw->dpsw_handle, vid, &vcfg); 201 if (err) { 202 dev_err(ethsw->dev, "dpsw_vlan_add err %d\n", err); 203 return err; 204 } 205 ethsw->vlans[vid] = ETHSW_VLAN_MEMBER; 206 207 return 0; 208 } 209 210 static bool dpaa2_switch_port_is_up(struct ethsw_port_priv *port_priv) 211 { 212 struct net_device *netdev = port_priv->netdev; 213 struct dpsw_link_state state; 214 int err; 215 216 err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0, 217 port_priv->ethsw_data->dpsw_handle, 218 port_priv->idx, &state); 219 if (err) { 220 netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err); 221 return true; 222 } 223 224 WARN_ONCE(state.up > 1, "Garbage read into link_state"); 225 226 return state.up ? true : false; 227 } 228 229 static int dpaa2_switch_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid) 230 { 231 struct ethsw_core *ethsw = port_priv->ethsw_data; 232 struct net_device *netdev = port_priv->netdev; 233 struct dpsw_tci_cfg tci_cfg = { 0 }; 234 bool up; 235 int err, ret; 236 237 err = dpsw_if_get_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, 238 port_priv->idx, &tci_cfg); 239 if (err) { 240 netdev_err(netdev, "dpsw_if_get_tci err %d\n", err); 241 return err; 242 } 243 244 tci_cfg.vlan_id = pvid; 245 246 /* Interface needs to be down to change PVID */ 247 up = dpaa2_switch_port_is_up(port_priv); 248 if (up) { 249 err = dpsw_if_disable(ethsw->mc_io, 0, 250 ethsw->dpsw_handle, 251 port_priv->idx); 252 if (err) { 253 netdev_err(netdev, "dpsw_if_disable err %d\n", err); 254 return err; 255 } 256 } 257 258 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, 259 port_priv->idx, &tci_cfg); 260 if (err) { 261 netdev_err(netdev, "dpsw_if_set_tci err %d\n", err); 262 goto set_tci_error; 263 } 264 265 /* Delete previous PVID info and mark the new one */ 266 port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID; 267 port_priv->vlans[pvid] |= ETHSW_VLAN_PVID; 268 port_priv->pvid = pvid; 269 270 set_tci_error: 271 if (up) { 272 ret = dpsw_if_enable(ethsw->mc_io, 0, 273 ethsw->dpsw_handle, 274 port_priv->idx); 275 if (ret) { 276 netdev_err(netdev, "dpsw_if_enable err %d\n", ret); 277 return ret; 278 } 279 } 280 281 return err; 282 } 283 284 static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv, 285 u16 vid, u16 flags) 286 { 287 struct ethsw_core *ethsw = port_priv->ethsw_data; 288 struct net_device *netdev = port_priv->netdev; 289 struct dpsw_vlan_if_cfg vcfg = {0}; 290 int err; 291 292 if (port_priv->vlans[vid]) { 293 netdev_warn(netdev, "VLAN %d already configured\n", vid); 294 return -EEXIST; 295 } 296 297 /* If hit, this VLAN rule will lead the packet into the FDB table 298 * specified in the vlan configuration below 299 */ 300 vcfg.num_ifs = 1; 301 vcfg.if_id[0] = port_priv->idx; 302 vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 303 vcfg.options |= DPSW_VLAN_ADD_IF_OPT_FDB_ID; 304 err = dpsw_vlan_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, vid, &vcfg); 305 if (err) { 306 netdev_err(netdev, "dpsw_vlan_add_if err %d\n", err); 307 return err; 308 } 309 310 port_priv->vlans[vid] = ETHSW_VLAN_MEMBER; 311 312 if (flags & BRIDGE_VLAN_INFO_UNTAGGED) { 313 err = dpsw_vlan_add_if_untagged(ethsw->mc_io, 0, 314 ethsw->dpsw_handle, 315 vid, &vcfg); 316 if (err) { 317 netdev_err(netdev, 318 "dpsw_vlan_add_if_untagged err %d\n", err); 319 return err; 320 } 321 port_priv->vlans[vid] |= ETHSW_VLAN_UNTAGGED; 322 } 323 324 if (flags & BRIDGE_VLAN_INFO_PVID) { 325 err = dpaa2_switch_port_set_pvid(port_priv, vid); 326 if (err) 327 return err; 328 } 329 330 return 0; 331 } 332 333 static enum dpsw_stp_state br_stp_state_to_dpsw(u8 state) 334 { 335 switch (state) { 336 case BR_STATE_DISABLED: 337 return DPSW_STP_STATE_DISABLED; 338 case BR_STATE_LISTENING: 339 return DPSW_STP_STATE_LISTENING; 340 case BR_STATE_LEARNING: 341 return DPSW_STP_STATE_LEARNING; 342 case BR_STATE_FORWARDING: 343 return DPSW_STP_STATE_FORWARDING; 344 case BR_STATE_BLOCKING: 345 return DPSW_STP_STATE_BLOCKING; 346 default: 347 return DPSW_STP_STATE_DISABLED; 348 } 349 } 350 351 static int dpaa2_switch_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state) 352 { 353 struct dpsw_stp_cfg stp_cfg = {0}; 354 int err; 355 u16 vid; 356 357 if (!netif_running(port_priv->netdev) || state == port_priv->stp_state) 358 return 0; /* Nothing to do */ 359 360 stp_cfg.state = br_stp_state_to_dpsw(state); 361 for (vid = 0; vid <= VLAN_VID_MASK; vid++) { 362 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { 363 stp_cfg.vlan_id = vid; 364 err = dpsw_if_set_stp(port_priv->ethsw_data->mc_io, 0, 365 port_priv->ethsw_data->dpsw_handle, 366 port_priv->idx, &stp_cfg); 367 if (err) { 368 netdev_err(port_priv->netdev, 369 "dpsw_if_set_stp err %d\n", err); 370 return err; 371 } 372 } 373 } 374 375 port_priv->stp_state = state; 376 377 return 0; 378 } 379 380 static int dpaa2_switch_dellink(struct ethsw_core *ethsw, u16 vid) 381 { 382 struct ethsw_port_priv *ppriv_local = NULL; 383 int i, err; 384 385 if (!ethsw->vlans[vid]) 386 return -ENOENT; 387 388 err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, vid); 389 if (err) { 390 dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n", err); 391 return err; 392 } 393 ethsw->vlans[vid] = 0; 394 395 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 396 ppriv_local = ethsw->ports[i]; 397 if (ppriv_local) 398 ppriv_local->vlans[vid] = 0; 399 } 400 401 return 0; 402 } 403 404 static int dpaa2_switch_port_fdb_add_uc(struct ethsw_port_priv *port_priv, 405 const unsigned char *addr) 406 { 407 struct dpsw_fdb_unicast_cfg entry = {0}; 408 u16 fdb_id; 409 int err; 410 411 entry.if_egress = port_priv->idx; 412 entry.type = DPSW_FDB_ENTRY_STATIC; 413 ether_addr_copy(entry.mac_addr, addr); 414 415 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 416 err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0, 417 port_priv->ethsw_data->dpsw_handle, 418 fdb_id, &entry); 419 if (err) 420 netdev_err(port_priv->netdev, 421 "dpsw_fdb_add_unicast err %d\n", err); 422 return err; 423 } 424 425 static int dpaa2_switch_port_fdb_del_uc(struct ethsw_port_priv *port_priv, 426 const unsigned char *addr) 427 { 428 struct dpsw_fdb_unicast_cfg entry = {0}; 429 u16 fdb_id; 430 int err; 431 432 entry.if_egress = port_priv->idx; 433 entry.type = DPSW_FDB_ENTRY_STATIC; 434 ether_addr_copy(entry.mac_addr, addr); 435 436 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 437 err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0, 438 port_priv->ethsw_data->dpsw_handle, 439 fdb_id, &entry); 440 /* Silently discard error for calling multiple times the del command */ 441 if (err && err != -ENXIO) 442 netdev_err(port_priv->netdev, 443 "dpsw_fdb_remove_unicast err %d\n", err); 444 return err; 445 } 446 447 static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv, 448 const unsigned char *addr) 449 { 450 struct dpsw_fdb_multicast_cfg entry = {0}; 451 u16 fdb_id; 452 int err; 453 454 ether_addr_copy(entry.mac_addr, addr); 455 entry.type = DPSW_FDB_ENTRY_STATIC; 456 entry.num_ifs = 1; 457 entry.if_id[0] = port_priv->idx; 458 459 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 460 err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0, 461 port_priv->ethsw_data->dpsw_handle, 462 fdb_id, &entry); 463 /* Silently discard error for calling multiple times the add command */ 464 if (err && err != -ENXIO) 465 netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n", 466 err); 467 return err; 468 } 469 470 static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv, 471 const unsigned char *addr) 472 { 473 struct dpsw_fdb_multicast_cfg entry = {0}; 474 u16 fdb_id; 475 int err; 476 477 ether_addr_copy(entry.mac_addr, addr); 478 entry.type = DPSW_FDB_ENTRY_STATIC; 479 entry.num_ifs = 1; 480 entry.if_id[0] = port_priv->idx; 481 482 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 483 err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0, 484 port_priv->ethsw_data->dpsw_handle, 485 fdb_id, &entry); 486 /* Silently discard error for calling multiple times the del command */ 487 if (err && err != -ENAVAIL) 488 netdev_err(port_priv->netdev, 489 "dpsw_fdb_remove_multicast err %d\n", err); 490 return err; 491 } 492 493 static void dpaa2_switch_port_get_stats(struct net_device *netdev, 494 struct rtnl_link_stats64 *stats) 495 { 496 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 497 u64 tmp; 498 int err; 499 500 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 501 port_priv->ethsw_data->dpsw_handle, 502 port_priv->idx, 503 DPSW_CNT_ING_FRAME, &stats->rx_packets); 504 if (err) 505 goto error; 506 507 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 508 port_priv->ethsw_data->dpsw_handle, 509 port_priv->idx, 510 DPSW_CNT_EGR_FRAME, &stats->tx_packets); 511 if (err) 512 goto error; 513 514 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 515 port_priv->ethsw_data->dpsw_handle, 516 port_priv->idx, 517 DPSW_CNT_ING_BYTE, &stats->rx_bytes); 518 if (err) 519 goto error; 520 521 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 522 port_priv->ethsw_data->dpsw_handle, 523 port_priv->idx, 524 DPSW_CNT_EGR_BYTE, &stats->tx_bytes); 525 if (err) 526 goto error; 527 528 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 529 port_priv->ethsw_data->dpsw_handle, 530 port_priv->idx, 531 DPSW_CNT_ING_FRAME_DISCARD, 532 &stats->rx_dropped); 533 if (err) 534 goto error; 535 536 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 537 port_priv->ethsw_data->dpsw_handle, 538 port_priv->idx, 539 DPSW_CNT_ING_FLTR_FRAME, 540 &tmp); 541 if (err) 542 goto error; 543 stats->rx_dropped += tmp; 544 545 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 546 port_priv->ethsw_data->dpsw_handle, 547 port_priv->idx, 548 DPSW_CNT_EGR_FRAME_DISCARD, 549 &stats->tx_dropped); 550 if (err) 551 goto error; 552 553 return; 554 555 error: 556 netdev_err(netdev, "dpsw_if_get_counter err %d\n", err); 557 } 558 559 static bool dpaa2_switch_port_has_offload_stats(const struct net_device *netdev, 560 int attr_id) 561 { 562 return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT); 563 } 564 565 static int dpaa2_switch_port_get_offload_stats(int attr_id, 566 const struct net_device *netdev, 567 void *sp) 568 { 569 switch (attr_id) { 570 case IFLA_OFFLOAD_XSTATS_CPU_HIT: 571 dpaa2_switch_port_get_stats((struct net_device *)netdev, sp); 572 return 0; 573 } 574 575 return -EINVAL; 576 } 577 578 static int dpaa2_switch_port_change_mtu(struct net_device *netdev, int mtu) 579 { 580 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 581 int err; 582 583 err = dpsw_if_set_max_frame_length(port_priv->ethsw_data->mc_io, 584 0, 585 port_priv->ethsw_data->dpsw_handle, 586 port_priv->idx, 587 (u16)ETHSW_L2_MAX_FRM(mtu)); 588 if (err) { 589 netdev_err(netdev, 590 "dpsw_if_set_max_frame_length() err %d\n", err); 591 return err; 592 } 593 594 netdev->mtu = mtu; 595 return 0; 596 } 597 598 static int dpaa2_switch_port_link_state_update(struct net_device *netdev) 599 { 600 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 601 struct dpsw_link_state state; 602 int err; 603 604 /* When we manage the MAC/PHY using phylink there is no need 605 * to manually update the netif_carrier. 606 */ 607 if (dpaa2_switch_port_is_type_phy(port_priv)) 608 return 0; 609 610 /* Interrupts are received even though no one issued an 'ifconfig up' 611 * on the switch interface. Ignore these link state update interrupts 612 */ 613 if (!netif_running(netdev)) 614 return 0; 615 616 err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0, 617 port_priv->ethsw_data->dpsw_handle, 618 port_priv->idx, &state); 619 if (err) { 620 netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err); 621 return err; 622 } 623 624 WARN_ONCE(state.up > 1, "Garbage read into link_state"); 625 626 if (state.up != port_priv->link_state) { 627 if (state.up) { 628 netif_carrier_on(netdev); 629 netif_tx_start_all_queues(netdev); 630 } else { 631 netif_carrier_off(netdev); 632 netif_tx_stop_all_queues(netdev); 633 } 634 port_priv->link_state = state.up; 635 } 636 637 return 0; 638 } 639 640 /* Manage all NAPI instances for the control interface. 641 * 642 * We only have one RX queue and one Tx Conf queue for all 643 * switch ports. Therefore, we only need to enable the NAPI instance once, the 644 * first time one of the switch ports runs .dev_open(). 645 */ 646 647 static void dpaa2_switch_enable_ctrl_if_napi(struct ethsw_core *ethsw) 648 { 649 int i; 650 651 /* Access to the ethsw->napi_users relies on the RTNL lock */ 652 ASSERT_RTNL(); 653 654 /* a new interface is using the NAPI instance */ 655 ethsw->napi_users++; 656 657 /* if there is already a user of the instance, return */ 658 if (ethsw->napi_users > 1) 659 return; 660 661 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 662 napi_enable(ðsw->fq[i].napi); 663 } 664 665 static void dpaa2_switch_disable_ctrl_if_napi(struct ethsw_core *ethsw) 666 { 667 int i; 668 669 /* Access to the ethsw->napi_users relies on the RTNL lock */ 670 ASSERT_RTNL(); 671 672 /* If we are not the last interface using the NAPI, return */ 673 ethsw->napi_users--; 674 if (ethsw->napi_users) 675 return; 676 677 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 678 napi_disable(ðsw->fq[i].napi); 679 } 680 681 static int dpaa2_switch_port_open(struct net_device *netdev) 682 { 683 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 684 struct ethsw_core *ethsw = port_priv->ethsw_data; 685 int err; 686 687 if (!dpaa2_switch_port_is_type_phy(port_priv)) { 688 /* Explicitly set carrier off, otherwise 689 * netif_carrier_ok() will return true and cause 'ip link show' 690 * to report the LOWER_UP flag, even though the link 691 * notification wasn't even received. 692 */ 693 netif_carrier_off(netdev); 694 } 695 696 err = dpsw_if_enable(port_priv->ethsw_data->mc_io, 0, 697 port_priv->ethsw_data->dpsw_handle, 698 port_priv->idx); 699 if (err) { 700 netdev_err(netdev, "dpsw_if_enable err %d\n", err); 701 return err; 702 } 703 704 dpaa2_switch_enable_ctrl_if_napi(ethsw); 705 706 if (dpaa2_switch_port_is_type_phy(port_priv)) { 707 dpaa2_mac_start(port_priv->mac); 708 phylink_start(port_priv->mac->phylink); 709 } 710 711 return 0; 712 } 713 714 static int dpaa2_switch_port_stop(struct net_device *netdev) 715 { 716 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 717 struct ethsw_core *ethsw = port_priv->ethsw_data; 718 int err; 719 720 if (dpaa2_switch_port_is_type_phy(port_priv)) { 721 phylink_stop(port_priv->mac->phylink); 722 dpaa2_mac_stop(port_priv->mac); 723 } else { 724 netif_tx_stop_all_queues(netdev); 725 netif_carrier_off(netdev); 726 } 727 728 err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0, 729 port_priv->ethsw_data->dpsw_handle, 730 port_priv->idx); 731 if (err) { 732 netdev_err(netdev, "dpsw_if_disable err %d\n", err); 733 return err; 734 } 735 736 dpaa2_switch_disable_ctrl_if_napi(ethsw); 737 738 return 0; 739 } 740 741 static int dpaa2_switch_port_parent_id(struct net_device *dev, 742 struct netdev_phys_item_id *ppid) 743 { 744 struct ethsw_port_priv *port_priv = netdev_priv(dev); 745 746 ppid->id_len = 1; 747 ppid->id[0] = port_priv->ethsw_data->dev_id; 748 749 return 0; 750 } 751 752 static int dpaa2_switch_port_get_phys_name(struct net_device *netdev, char *name, 753 size_t len) 754 { 755 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 756 int err; 757 758 err = snprintf(name, len, "p%d", port_priv->idx); 759 if (err >= len) 760 return -EINVAL; 761 762 return 0; 763 } 764 765 struct ethsw_dump_ctx { 766 struct net_device *dev; 767 struct sk_buff *skb; 768 struct netlink_callback *cb; 769 int idx; 770 }; 771 772 static int dpaa2_switch_fdb_dump_nl(struct fdb_dump_entry *entry, 773 struct ethsw_dump_ctx *dump) 774 { 775 int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC; 776 u32 portid = NETLINK_CB(dump->cb->skb).portid; 777 u32 seq = dump->cb->nlh->nlmsg_seq; 778 struct nlmsghdr *nlh; 779 struct ndmsg *ndm; 780 781 if (dump->idx < dump->cb->args[2]) 782 goto skip; 783 784 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, 785 sizeof(*ndm), NLM_F_MULTI); 786 if (!nlh) 787 return -EMSGSIZE; 788 789 ndm = nlmsg_data(nlh); 790 ndm->ndm_family = AF_BRIDGE; 791 ndm->ndm_pad1 = 0; 792 ndm->ndm_pad2 = 0; 793 ndm->ndm_flags = NTF_SELF; 794 ndm->ndm_type = 0; 795 ndm->ndm_ifindex = dump->dev->ifindex; 796 ndm->ndm_state = is_dynamic ? NUD_REACHABLE : NUD_NOARP; 797 798 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr)) 799 goto nla_put_failure; 800 801 nlmsg_end(dump->skb, nlh); 802 803 skip: 804 dump->idx++; 805 return 0; 806 807 nla_put_failure: 808 nlmsg_cancel(dump->skb, nlh); 809 return -EMSGSIZE; 810 } 811 812 static int dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry, 813 struct ethsw_port_priv *port_priv) 814 { 815 int idx = port_priv->idx; 816 int valid; 817 818 if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) 819 valid = entry->if_info == port_priv->idx; 820 else 821 valid = entry->if_mask[idx / 8] & BIT(idx % 8); 822 823 return valid; 824 } 825 826 static int dpaa2_switch_fdb_iterate(struct ethsw_port_priv *port_priv, 827 dpaa2_switch_fdb_cb_t cb, void *data) 828 { 829 struct net_device *net_dev = port_priv->netdev; 830 struct ethsw_core *ethsw = port_priv->ethsw_data; 831 struct device *dev = net_dev->dev.parent; 832 struct fdb_dump_entry *fdb_entries; 833 struct fdb_dump_entry fdb_entry; 834 dma_addr_t fdb_dump_iova; 835 u16 num_fdb_entries; 836 u32 fdb_dump_size; 837 int err = 0, i; 838 u8 *dma_mem; 839 u16 fdb_id; 840 841 fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry); 842 dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL); 843 if (!dma_mem) 844 return -ENOMEM; 845 846 fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size, 847 DMA_FROM_DEVICE); 848 if (dma_mapping_error(dev, fdb_dump_iova)) { 849 netdev_err(net_dev, "dma_map_single() failed\n"); 850 err = -ENOMEM; 851 goto err_map; 852 } 853 854 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 855 err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, fdb_id, 856 fdb_dump_iova, fdb_dump_size, &num_fdb_entries); 857 if (err) { 858 netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err); 859 goto err_dump; 860 } 861 862 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE); 863 864 fdb_entries = (struct fdb_dump_entry *)dma_mem; 865 for (i = 0; i < num_fdb_entries; i++) { 866 fdb_entry = fdb_entries[i]; 867 868 err = cb(port_priv, &fdb_entry, data); 869 if (err) 870 goto end; 871 } 872 873 end: 874 kfree(dma_mem); 875 876 return 0; 877 878 err_dump: 879 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE); 880 err_map: 881 kfree(dma_mem); 882 return err; 883 } 884 885 static int dpaa2_switch_fdb_entry_dump(struct ethsw_port_priv *port_priv, 886 struct fdb_dump_entry *fdb_entry, 887 void *data) 888 { 889 if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv)) 890 return 0; 891 892 return dpaa2_switch_fdb_dump_nl(fdb_entry, data); 893 } 894 895 static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 896 struct net_device *net_dev, 897 struct net_device *filter_dev, int *idx) 898 { 899 struct ethsw_port_priv *port_priv = netdev_priv(net_dev); 900 struct ethsw_dump_ctx dump = { 901 .dev = net_dev, 902 .skb = skb, 903 .cb = cb, 904 .idx = *idx, 905 }; 906 int err; 907 908 err = dpaa2_switch_fdb_iterate(port_priv, dpaa2_switch_fdb_entry_dump, &dump); 909 *idx = dump.idx; 910 911 return err; 912 } 913 914 static int dpaa2_switch_fdb_entry_fast_age(struct ethsw_port_priv *port_priv, 915 struct fdb_dump_entry *fdb_entry, 916 void *data __always_unused) 917 { 918 if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv)) 919 return 0; 920 921 if (!(fdb_entry->type & DPSW_FDB_ENTRY_TYPE_DYNAMIC)) 922 return 0; 923 924 if (fdb_entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) 925 dpaa2_switch_port_fdb_del_uc(port_priv, fdb_entry->mac_addr); 926 else 927 dpaa2_switch_port_fdb_del_mc(port_priv, fdb_entry->mac_addr); 928 929 return 0; 930 } 931 932 static void dpaa2_switch_port_fast_age(struct ethsw_port_priv *port_priv) 933 { 934 dpaa2_switch_fdb_iterate(port_priv, 935 dpaa2_switch_fdb_entry_fast_age, NULL); 936 } 937 938 static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto, 939 u16 vid) 940 { 941 struct switchdev_obj_port_vlan vlan = { 942 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 943 .vid = vid, 944 .obj.orig_dev = netdev, 945 /* This API only allows programming tagged, non-PVID VIDs */ 946 .flags = 0, 947 }; 948 949 return dpaa2_switch_port_vlans_add(netdev, &vlan); 950 } 951 952 static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto, 953 u16 vid) 954 { 955 struct switchdev_obj_port_vlan vlan = { 956 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 957 .vid = vid, 958 .obj.orig_dev = netdev, 959 /* This API only allows programming tagged, non-PVID VIDs */ 960 .flags = 0, 961 }; 962 963 return dpaa2_switch_port_vlans_del(netdev, &vlan); 964 } 965 966 static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv) 967 { 968 struct ethsw_core *ethsw = port_priv->ethsw_data; 969 struct net_device *net_dev = port_priv->netdev; 970 struct device *dev = net_dev->dev.parent; 971 u8 mac_addr[ETH_ALEN]; 972 int err; 973 974 if (!(ethsw->features & ETHSW_FEATURE_MAC_ADDR)) 975 return 0; 976 977 /* Get firmware address, if any */ 978 err = dpsw_if_get_port_mac_addr(ethsw->mc_io, 0, ethsw->dpsw_handle, 979 port_priv->idx, mac_addr); 980 if (err) { 981 dev_err(dev, "dpsw_if_get_port_mac_addr() failed\n"); 982 return err; 983 } 984 985 /* First check if firmware has any address configured by bootloader */ 986 if (!is_zero_ether_addr(mac_addr)) { 987 eth_hw_addr_set(net_dev, mac_addr); 988 } else { 989 /* No MAC address configured, fill in net_dev->dev_addr 990 * with a random one 991 */ 992 eth_hw_addr_random(net_dev); 993 dev_dbg_once(dev, "device(s) have all-zero hwaddr, replaced with random\n"); 994 995 /* Override NET_ADDR_RANDOM set by eth_hw_addr_random(); for all 996 * practical purposes, this will be our "permanent" mac address, 997 * at least until the next reboot. This move will also permit 998 * register_netdevice() to properly fill up net_dev->perm_addr. 999 */ 1000 net_dev->addr_assign_type = NET_ADDR_PERM; 1001 } 1002 1003 return 0; 1004 } 1005 1006 static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw, 1007 const struct dpaa2_fd *fd) 1008 { 1009 struct device *dev = ethsw->dev; 1010 unsigned char *buffer_start; 1011 struct sk_buff **skbh, *skb; 1012 dma_addr_t fd_addr; 1013 1014 fd_addr = dpaa2_fd_get_addr(fd); 1015 skbh = dpaa2_iova_to_virt(ethsw->iommu_domain, fd_addr); 1016 1017 skb = *skbh; 1018 buffer_start = (unsigned char *)skbh; 1019 1020 dma_unmap_single(dev, fd_addr, 1021 skb_tail_pointer(skb) - buffer_start, 1022 DMA_TO_DEVICE); 1023 1024 /* Move on with skb release */ 1025 dev_kfree_skb(skb); 1026 } 1027 1028 static int dpaa2_switch_build_single_fd(struct ethsw_core *ethsw, 1029 struct sk_buff *skb, 1030 struct dpaa2_fd *fd) 1031 { 1032 struct device *dev = ethsw->dev; 1033 struct sk_buff **skbh; 1034 dma_addr_t addr; 1035 u8 *buff_start; 1036 void *hwa; 1037 1038 buff_start = PTR_ALIGN(skb->data - DPAA2_SWITCH_TX_DATA_OFFSET - 1039 DPAA2_SWITCH_TX_BUF_ALIGN, 1040 DPAA2_SWITCH_TX_BUF_ALIGN); 1041 1042 /* Clear FAS to have consistent values for TX confirmation. It is 1043 * located in the first 8 bytes of the buffer's hardware annotation 1044 * area 1045 */ 1046 hwa = buff_start + DPAA2_SWITCH_SWA_SIZE; 1047 memset(hwa, 0, 8); 1048 1049 /* Store a backpointer to the skb at the beginning of the buffer 1050 * (in the private data area) such that we can release it 1051 * on Tx confirm 1052 */ 1053 skbh = (struct sk_buff **)buff_start; 1054 *skbh = skb; 1055 1056 addr = dma_map_single(dev, buff_start, 1057 skb_tail_pointer(skb) - buff_start, 1058 DMA_TO_DEVICE); 1059 if (unlikely(dma_mapping_error(dev, addr))) 1060 return -ENOMEM; 1061 1062 /* Setup the FD fields */ 1063 memset(fd, 0, sizeof(*fd)); 1064 1065 dpaa2_fd_set_addr(fd, addr); 1066 dpaa2_fd_set_offset(fd, (u16)(skb->data - buff_start)); 1067 dpaa2_fd_set_len(fd, skb->len); 1068 dpaa2_fd_set_format(fd, dpaa2_fd_single); 1069 1070 return 0; 1071 } 1072 1073 static netdev_tx_t dpaa2_switch_port_tx(struct sk_buff *skb, 1074 struct net_device *net_dev) 1075 { 1076 struct ethsw_port_priv *port_priv = netdev_priv(net_dev); 1077 struct ethsw_core *ethsw = port_priv->ethsw_data; 1078 int retries = DPAA2_SWITCH_SWP_BUSY_RETRIES; 1079 struct dpaa2_fd fd; 1080 int err; 1081 1082 if (unlikely(skb_headroom(skb) < DPAA2_SWITCH_NEEDED_HEADROOM)) { 1083 struct sk_buff *ns; 1084 1085 ns = skb_realloc_headroom(skb, DPAA2_SWITCH_NEEDED_HEADROOM); 1086 if (unlikely(!ns)) { 1087 net_err_ratelimited("%s: Error reallocating skb headroom\n", net_dev->name); 1088 goto err_free_skb; 1089 } 1090 dev_consume_skb_any(skb); 1091 skb = ns; 1092 } 1093 1094 /* We'll be holding a back-reference to the skb until Tx confirmation */ 1095 skb = skb_unshare(skb, GFP_ATOMIC); 1096 if (unlikely(!skb)) { 1097 /* skb_unshare() has already freed the skb */ 1098 net_err_ratelimited("%s: Error copying the socket buffer\n", net_dev->name); 1099 goto err_exit; 1100 } 1101 1102 /* At this stage, we do not support non-linear skbs so just try to 1103 * linearize the skb and if that's not working, just drop the packet. 1104 */ 1105 err = skb_linearize(skb); 1106 if (err) { 1107 net_err_ratelimited("%s: skb_linearize error (%d)!\n", net_dev->name, err); 1108 goto err_free_skb; 1109 } 1110 1111 err = dpaa2_switch_build_single_fd(ethsw, skb, &fd); 1112 if (unlikely(err)) { 1113 net_err_ratelimited("%s: ethsw_build_*_fd() %d\n", net_dev->name, err); 1114 goto err_free_skb; 1115 } 1116 1117 do { 1118 err = dpaa2_io_service_enqueue_qd(NULL, 1119 port_priv->tx_qdid, 1120 8, 0, &fd); 1121 retries--; 1122 } while (err == -EBUSY && retries); 1123 1124 if (unlikely(err < 0)) { 1125 dpaa2_switch_free_fd(ethsw, &fd); 1126 goto err_exit; 1127 } 1128 1129 return NETDEV_TX_OK; 1130 1131 err_free_skb: 1132 dev_kfree_skb(skb); 1133 err_exit: 1134 return NETDEV_TX_OK; 1135 } 1136 1137 static int 1138 dpaa2_switch_setup_tc_cls_flower(struct dpaa2_switch_filter_block *filter_block, 1139 struct flow_cls_offload *f) 1140 { 1141 switch (f->command) { 1142 case FLOW_CLS_REPLACE: 1143 return dpaa2_switch_cls_flower_replace(filter_block, f); 1144 case FLOW_CLS_DESTROY: 1145 return dpaa2_switch_cls_flower_destroy(filter_block, f); 1146 default: 1147 return -EOPNOTSUPP; 1148 } 1149 } 1150 1151 static int 1152 dpaa2_switch_setup_tc_cls_matchall(struct dpaa2_switch_filter_block *block, 1153 struct tc_cls_matchall_offload *f) 1154 { 1155 switch (f->command) { 1156 case TC_CLSMATCHALL_REPLACE: 1157 return dpaa2_switch_cls_matchall_replace(block, f); 1158 case TC_CLSMATCHALL_DESTROY: 1159 return dpaa2_switch_cls_matchall_destroy(block, f); 1160 default: 1161 return -EOPNOTSUPP; 1162 } 1163 } 1164 1165 static int dpaa2_switch_port_setup_tc_block_cb_ig(enum tc_setup_type type, 1166 void *type_data, 1167 void *cb_priv) 1168 { 1169 switch (type) { 1170 case TC_SETUP_CLSFLOWER: 1171 return dpaa2_switch_setup_tc_cls_flower(cb_priv, type_data); 1172 case TC_SETUP_CLSMATCHALL: 1173 return dpaa2_switch_setup_tc_cls_matchall(cb_priv, type_data); 1174 default: 1175 return -EOPNOTSUPP; 1176 } 1177 } 1178 1179 static LIST_HEAD(dpaa2_switch_block_cb_list); 1180 1181 static int 1182 dpaa2_switch_port_acl_tbl_bind(struct ethsw_port_priv *port_priv, 1183 struct dpaa2_switch_filter_block *block) 1184 { 1185 struct ethsw_core *ethsw = port_priv->ethsw_data; 1186 struct net_device *netdev = port_priv->netdev; 1187 struct dpsw_acl_if_cfg acl_if_cfg; 1188 int err; 1189 1190 if (port_priv->filter_block) 1191 return -EINVAL; 1192 1193 acl_if_cfg.if_id[0] = port_priv->idx; 1194 acl_if_cfg.num_ifs = 1; 1195 err = dpsw_acl_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1196 block->acl_id, &acl_if_cfg); 1197 if (err) { 1198 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err); 1199 return err; 1200 } 1201 1202 block->ports |= BIT(port_priv->idx); 1203 port_priv->filter_block = block; 1204 1205 return 0; 1206 } 1207 1208 static int 1209 dpaa2_switch_port_acl_tbl_unbind(struct ethsw_port_priv *port_priv, 1210 struct dpaa2_switch_filter_block *block) 1211 { 1212 struct ethsw_core *ethsw = port_priv->ethsw_data; 1213 struct net_device *netdev = port_priv->netdev; 1214 struct dpsw_acl_if_cfg acl_if_cfg; 1215 int err; 1216 1217 if (port_priv->filter_block != block) 1218 return -EINVAL; 1219 1220 acl_if_cfg.if_id[0] = port_priv->idx; 1221 acl_if_cfg.num_ifs = 1; 1222 err = dpsw_acl_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1223 block->acl_id, &acl_if_cfg); 1224 if (err) { 1225 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err); 1226 return err; 1227 } 1228 1229 block->ports &= ~BIT(port_priv->idx); 1230 port_priv->filter_block = NULL; 1231 return 0; 1232 } 1233 1234 static int dpaa2_switch_port_block_bind(struct ethsw_port_priv *port_priv, 1235 struct dpaa2_switch_filter_block *block) 1236 { 1237 struct dpaa2_switch_filter_block *old_block = port_priv->filter_block; 1238 int err; 1239 1240 /* Offload all the mirror entries found in the block on this new port 1241 * joining it. 1242 */ 1243 err = dpaa2_switch_block_offload_mirror(block, port_priv); 1244 if (err) 1245 return err; 1246 1247 /* If the port is already bound to this ACL table then do nothing. This 1248 * can happen when this port is the first one to join a tc block 1249 */ 1250 if (port_priv->filter_block == block) 1251 return 0; 1252 1253 err = dpaa2_switch_port_acl_tbl_unbind(port_priv, old_block); 1254 if (err) 1255 return err; 1256 1257 /* Mark the previous ACL table as being unused if this was the last 1258 * port that was using it. 1259 */ 1260 if (old_block->ports == 0) 1261 old_block->in_use = false; 1262 1263 return dpaa2_switch_port_acl_tbl_bind(port_priv, block); 1264 } 1265 1266 static int 1267 dpaa2_switch_port_block_unbind(struct ethsw_port_priv *port_priv, 1268 struct dpaa2_switch_filter_block *block) 1269 { 1270 struct ethsw_core *ethsw = port_priv->ethsw_data; 1271 struct dpaa2_switch_filter_block *new_block; 1272 int err; 1273 1274 /* Unoffload all the mirror entries found in the block from the 1275 * port leaving it. 1276 */ 1277 err = dpaa2_switch_block_unoffload_mirror(block, port_priv); 1278 if (err) 1279 return err; 1280 1281 /* We are the last port that leaves a block (an ACL table). 1282 * We'll continue to use this table. 1283 */ 1284 if (block->ports == BIT(port_priv->idx)) 1285 return 0; 1286 1287 err = dpaa2_switch_port_acl_tbl_unbind(port_priv, block); 1288 if (err) 1289 return err; 1290 1291 if (block->ports == 0) 1292 block->in_use = false; 1293 1294 new_block = dpaa2_switch_filter_block_get_unused(ethsw); 1295 new_block->in_use = true; 1296 return dpaa2_switch_port_acl_tbl_bind(port_priv, new_block); 1297 } 1298 1299 static int dpaa2_switch_setup_tc_block_bind(struct net_device *netdev, 1300 struct flow_block_offload *f) 1301 { 1302 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1303 struct ethsw_core *ethsw = port_priv->ethsw_data; 1304 struct dpaa2_switch_filter_block *filter_block; 1305 struct flow_block_cb *block_cb; 1306 bool register_block = false; 1307 int err; 1308 1309 block_cb = flow_block_cb_lookup(f->block, 1310 dpaa2_switch_port_setup_tc_block_cb_ig, 1311 ethsw); 1312 1313 if (!block_cb) { 1314 /* If the filter block is not already known, then this port 1315 * must be the first to join it. In this case, we can just 1316 * continue to use our private table 1317 */ 1318 filter_block = port_priv->filter_block; 1319 1320 block_cb = flow_block_cb_alloc(dpaa2_switch_port_setup_tc_block_cb_ig, 1321 ethsw, filter_block, NULL); 1322 if (IS_ERR(block_cb)) 1323 return PTR_ERR(block_cb); 1324 1325 register_block = true; 1326 } else { 1327 filter_block = flow_block_cb_priv(block_cb); 1328 } 1329 1330 flow_block_cb_incref(block_cb); 1331 err = dpaa2_switch_port_block_bind(port_priv, filter_block); 1332 if (err) 1333 goto err_block_bind; 1334 1335 if (register_block) { 1336 flow_block_cb_add(block_cb, f); 1337 list_add_tail(&block_cb->driver_list, 1338 &dpaa2_switch_block_cb_list); 1339 } 1340 1341 return 0; 1342 1343 err_block_bind: 1344 if (!flow_block_cb_decref(block_cb)) 1345 flow_block_cb_free(block_cb); 1346 return err; 1347 } 1348 1349 static void dpaa2_switch_setup_tc_block_unbind(struct net_device *netdev, 1350 struct flow_block_offload *f) 1351 { 1352 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1353 struct ethsw_core *ethsw = port_priv->ethsw_data; 1354 struct dpaa2_switch_filter_block *filter_block; 1355 struct flow_block_cb *block_cb; 1356 int err; 1357 1358 block_cb = flow_block_cb_lookup(f->block, 1359 dpaa2_switch_port_setup_tc_block_cb_ig, 1360 ethsw); 1361 if (!block_cb) 1362 return; 1363 1364 filter_block = flow_block_cb_priv(block_cb); 1365 err = dpaa2_switch_port_block_unbind(port_priv, filter_block); 1366 if (!err && !flow_block_cb_decref(block_cb)) { 1367 flow_block_cb_remove(block_cb, f); 1368 list_del(&block_cb->driver_list); 1369 } 1370 } 1371 1372 static int dpaa2_switch_setup_tc_block(struct net_device *netdev, 1373 struct flow_block_offload *f) 1374 { 1375 if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) 1376 return -EOPNOTSUPP; 1377 1378 f->driver_block_list = &dpaa2_switch_block_cb_list; 1379 1380 switch (f->command) { 1381 case FLOW_BLOCK_BIND: 1382 return dpaa2_switch_setup_tc_block_bind(netdev, f); 1383 case FLOW_BLOCK_UNBIND: 1384 dpaa2_switch_setup_tc_block_unbind(netdev, f); 1385 return 0; 1386 default: 1387 return -EOPNOTSUPP; 1388 } 1389 } 1390 1391 static int dpaa2_switch_port_setup_tc(struct net_device *netdev, 1392 enum tc_setup_type type, 1393 void *type_data) 1394 { 1395 switch (type) { 1396 case TC_SETUP_BLOCK: { 1397 return dpaa2_switch_setup_tc_block(netdev, type_data); 1398 } 1399 default: 1400 return -EOPNOTSUPP; 1401 } 1402 1403 return 0; 1404 } 1405 1406 static const struct net_device_ops dpaa2_switch_port_ops = { 1407 .ndo_open = dpaa2_switch_port_open, 1408 .ndo_stop = dpaa2_switch_port_stop, 1409 1410 .ndo_set_mac_address = eth_mac_addr, 1411 .ndo_get_stats64 = dpaa2_switch_port_get_stats, 1412 .ndo_change_mtu = dpaa2_switch_port_change_mtu, 1413 .ndo_has_offload_stats = dpaa2_switch_port_has_offload_stats, 1414 .ndo_get_offload_stats = dpaa2_switch_port_get_offload_stats, 1415 .ndo_fdb_dump = dpaa2_switch_port_fdb_dump, 1416 .ndo_vlan_rx_add_vid = dpaa2_switch_port_vlan_add, 1417 .ndo_vlan_rx_kill_vid = dpaa2_switch_port_vlan_kill, 1418 1419 .ndo_start_xmit = dpaa2_switch_port_tx, 1420 .ndo_get_port_parent_id = dpaa2_switch_port_parent_id, 1421 .ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name, 1422 .ndo_setup_tc = dpaa2_switch_port_setup_tc, 1423 }; 1424 1425 bool dpaa2_switch_port_dev_check(const struct net_device *netdev) 1426 { 1427 return netdev->netdev_ops == &dpaa2_switch_port_ops; 1428 } 1429 1430 static int dpaa2_switch_port_connect_mac(struct ethsw_port_priv *port_priv) 1431 { 1432 struct fsl_mc_device *dpsw_port_dev, *dpmac_dev; 1433 struct dpaa2_mac *mac; 1434 int err; 1435 1436 dpsw_port_dev = to_fsl_mc_device(port_priv->netdev->dev.parent); 1437 dpmac_dev = fsl_mc_get_endpoint(dpsw_port_dev, port_priv->idx); 1438 1439 if (PTR_ERR(dpmac_dev) == -EPROBE_DEFER) 1440 return PTR_ERR(dpmac_dev); 1441 1442 if (IS_ERR(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type) 1443 return 0; 1444 1445 mac = kzalloc(sizeof(*mac), GFP_KERNEL); 1446 if (!mac) 1447 return -ENOMEM; 1448 1449 mac->mc_dev = dpmac_dev; 1450 mac->mc_io = port_priv->ethsw_data->mc_io; 1451 mac->net_dev = port_priv->netdev; 1452 1453 err = dpaa2_mac_open(mac); 1454 if (err) 1455 goto err_free_mac; 1456 port_priv->mac = mac; 1457 1458 if (dpaa2_switch_port_is_type_phy(port_priv)) { 1459 err = dpaa2_mac_connect(mac); 1460 if (err) { 1461 netdev_err(port_priv->netdev, 1462 "Error connecting to the MAC endpoint %pe\n", 1463 ERR_PTR(err)); 1464 goto err_close_mac; 1465 } 1466 } 1467 1468 return 0; 1469 1470 err_close_mac: 1471 dpaa2_mac_close(mac); 1472 port_priv->mac = NULL; 1473 err_free_mac: 1474 kfree(mac); 1475 return err; 1476 } 1477 1478 static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv) 1479 { 1480 if (dpaa2_switch_port_is_type_phy(port_priv)) 1481 dpaa2_mac_disconnect(port_priv->mac); 1482 1483 if (!dpaa2_switch_port_has_mac(port_priv)) 1484 return; 1485 1486 dpaa2_mac_close(port_priv->mac); 1487 kfree(port_priv->mac); 1488 port_priv->mac = NULL; 1489 } 1490 1491 static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg) 1492 { 1493 struct device *dev = (struct device *)arg; 1494 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1495 struct ethsw_port_priv *port_priv; 1496 u32 status = ~0; 1497 int err, if_id; 1498 1499 err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, 1500 DPSW_IRQ_INDEX_IF, &status); 1501 if (err) { 1502 dev_err(dev, "Can't get irq status (err %d)\n", err); 1503 goto out; 1504 } 1505 1506 if_id = (status & 0xFFFF0000) >> 16; 1507 port_priv = ethsw->ports[if_id]; 1508 1509 if (status & DPSW_IRQ_EVENT_LINK_CHANGED) { 1510 dpaa2_switch_port_link_state_update(port_priv->netdev); 1511 dpaa2_switch_port_set_mac_addr(port_priv); 1512 } 1513 1514 if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) { 1515 rtnl_lock(); 1516 if (dpaa2_switch_port_has_mac(port_priv)) 1517 dpaa2_switch_port_disconnect_mac(port_priv); 1518 else 1519 dpaa2_switch_port_connect_mac(port_priv); 1520 rtnl_unlock(); 1521 } 1522 1523 out: 1524 err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, 1525 DPSW_IRQ_INDEX_IF, status); 1526 if (err) 1527 dev_err(dev, "Can't clear irq status (err %d)\n", err); 1528 1529 return IRQ_HANDLED; 1530 } 1531 1532 static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev) 1533 { 1534 struct device *dev = &sw_dev->dev; 1535 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1536 u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED; 1537 struct fsl_mc_device_irq *irq; 1538 int err; 1539 1540 err = fsl_mc_allocate_irqs(sw_dev); 1541 if (err) { 1542 dev_err(dev, "MC irqs allocation failed\n"); 1543 return err; 1544 } 1545 1546 if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) { 1547 err = -EINVAL; 1548 goto free_irq; 1549 } 1550 1551 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1552 DPSW_IRQ_INDEX_IF, 0); 1553 if (err) { 1554 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1555 goto free_irq; 1556 } 1557 1558 irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF]; 1559 1560 err = devm_request_threaded_irq(dev, irq->virq, NULL, 1561 dpaa2_switch_irq0_handler_thread, 1562 IRQF_NO_SUSPEND | IRQF_ONESHOT, 1563 dev_name(dev), dev); 1564 if (err) { 1565 dev_err(dev, "devm_request_threaded_irq(): %d\n", err); 1566 goto free_irq; 1567 } 1568 1569 err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle, 1570 DPSW_IRQ_INDEX_IF, mask); 1571 if (err) { 1572 dev_err(dev, "dpsw_set_irq_mask(): %d\n", err); 1573 goto free_devm_irq; 1574 } 1575 1576 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1577 DPSW_IRQ_INDEX_IF, 1); 1578 if (err) { 1579 dev_err(dev, "dpsw_set_irq_enable(): %d\n", err); 1580 goto free_devm_irq; 1581 } 1582 1583 return 0; 1584 1585 free_devm_irq: 1586 devm_free_irq(dev, irq->virq, dev); 1587 free_irq: 1588 fsl_mc_free_irqs(sw_dev); 1589 return err; 1590 } 1591 1592 static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev) 1593 { 1594 struct device *dev = &sw_dev->dev; 1595 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1596 int err; 1597 1598 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1599 DPSW_IRQ_INDEX_IF, 0); 1600 if (err) 1601 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1602 1603 fsl_mc_free_irqs(sw_dev); 1604 } 1605 1606 static int dpaa2_switch_port_set_learning(struct ethsw_port_priv *port_priv, bool enable) 1607 { 1608 struct ethsw_core *ethsw = port_priv->ethsw_data; 1609 enum dpsw_learning_mode learn_mode; 1610 int err; 1611 1612 if (enable) 1613 learn_mode = DPSW_LEARNING_MODE_HW; 1614 else 1615 learn_mode = DPSW_LEARNING_MODE_DIS; 1616 1617 err = dpsw_if_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 1618 port_priv->idx, learn_mode); 1619 if (err) 1620 netdev_err(port_priv->netdev, "dpsw_if_set_learning_mode err %d\n", err); 1621 1622 if (!enable) 1623 dpaa2_switch_port_fast_age(port_priv); 1624 1625 return err; 1626 } 1627 1628 static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev, 1629 u8 state) 1630 { 1631 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1632 int err; 1633 1634 err = dpaa2_switch_port_set_stp_state(port_priv, state); 1635 if (err) 1636 return err; 1637 1638 switch (state) { 1639 case BR_STATE_DISABLED: 1640 case BR_STATE_BLOCKING: 1641 case BR_STATE_LISTENING: 1642 err = dpaa2_switch_port_set_learning(port_priv, false); 1643 break; 1644 case BR_STATE_LEARNING: 1645 case BR_STATE_FORWARDING: 1646 err = dpaa2_switch_port_set_learning(port_priv, 1647 port_priv->learn_ena); 1648 break; 1649 } 1650 1651 return err; 1652 } 1653 1654 static int dpaa2_switch_port_flood(struct ethsw_port_priv *port_priv, 1655 struct switchdev_brport_flags flags) 1656 { 1657 struct ethsw_core *ethsw = port_priv->ethsw_data; 1658 1659 if (flags.mask & BR_BCAST_FLOOD) 1660 port_priv->bcast_flood = !!(flags.val & BR_BCAST_FLOOD); 1661 1662 if (flags.mask & BR_FLOOD) 1663 port_priv->ucast_flood = !!(flags.val & BR_FLOOD); 1664 1665 return dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 1666 } 1667 1668 static int dpaa2_switch_port_pre_bridge_flags(struct net_device *netdev, 1669 struct switchdev_brport_flags flags, 1670 struct netlink_ext_ack *extack) 1671 { 1672 if (flags.mask & ~(BR_LEARNING | BR_BCAST_FLOOD | BR_FLOOD | 1673 BR_MCAST_FLOOD)) 1674 return -EINVAL; 1675 1676 if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD)) { 1677 bool multicast = !!(flags.val & BR_MCAST_FLOOD); 1678 bool unicast = !!(flags.val & BR_FLOOD); 1679 1680 if (unicast != multicast) { 1681 NL_SET_ERR_MSG_MOD(extack, 1682 "Cannot configure multicast flooding independently of unicast"); 1683 return -EINVAL; 1684 } 1685 } 1686 1687 return 0; 1688 } 1689 1690 static int dpaa2_switch_port_bridge_flags(struct net_device *netdev, 1691 struct switchdev_brport_flags flags, 1692 struct netlink_ext_ack *extack) 1693 { 1694 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1695 int err; 1696 1697 if (flags.mask & BR_LEARNING) { 1698 bool learn_ena = !!(flags.val & BR_LEARNING); 1699 1700 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 1701 if (err) 1702 return err; 1703 port_priv->learn_ena = learn_ena; 1704 } 1705 1706 if (flags.mask & (BR_BCAST_FLOOD | BR_FLOOD | BR_MCAST_FLOOD)) { 1707 err = dpaa2_switch_port_flood(port_priv, flags); 1708 if (err) 1709 return err; 1710 } 1711 1712 return 0; 1713 } 1714 1715 static int dpaa2_switch_port_attr_set(struct net_device *netdev, const void *ctx, 1716 const struct switchdev_attr *attr, 1717 struct netlink_ext_ack *extack) 1718 { 1719 int err = 0; 1720 1721 switch (attr->id) { 1722 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 1723 err = dpaa2_switch_port_attr_stp_state_set(netdev, 1724 attr->u.stp_state); 1725 break; 1726 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 1727 if (!attr->u.vlan_filtering) { 1728 NL_SET_ERR_MSG_MOD(extack, 1729 "The DPAA2 switch does not support VLAN-unaware operation"); 1730 return -EOPNOTSUPP; 1731 } 1732 break; 1733 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: 1734 err = dpaa2_switch_port_pre_bridge_flags(netdev, attr->u.brport_flags, extack); 1735 break; 1736 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 1737 err = dpaa2_switch_port_bridge_flags(netdev, attr->u.brport_flags, extack); 1738 break; 1739 default: 1740 err = -EOPNOTSUPP; 1741 break; 1742 } 1743 1744 return err; 1745 } 1746 1747 int dpaa2_switch_port_vlans_add(struct net_device *netdev, 1748 const struct switchdev_obj_port_vlan *vlan) 1749 { 1750 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1751 struct ethsw_core *ethsw = port_priv->ethsw_data; 1752 struct dpsw_attr *attr = ðsw->sw_attr; 1753 int err = 0; 1754 1755 /* Make sure that the VLAN is not already configured 1756 * on the switch port 1757 */ 1758 if (port_priv->vlans[vlan->vid] & ETHSW_VLAN_MEMBER) 1759 return -EEXIST; 1760 1761 /* Check if there is space for a new VLAN */ 1762 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1763 ðsw->sw_attr); 1764 if (err) { 1765 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1766 return err; 1767 } 1768 if (attr->max_vlans - attr->num_vlans < 1) 1769 return -ENOSPC; 1770 1771 /* Check if there is space for a new VLAN */ 1772 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1773 ðsw->sw_attr); 1774 if (err) { 1775 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1776 return err; 1777 } 1778 if (attr->max_vlans - attr->num_vlans < 1) 1779 return -ENOSPC; 1780 1781 if (!port_priv->ethsw_data->vlans[vlan->vid]) { 1782 /* this is a new VLAN */ 1783 err = dpaa2_switch_add_vlan(port_priv, vlan->vid); 1784 if (err) 1785 return err; 1786 1787 port_priv->ethsw_data->vlans[vlan->vid] |= ETHSW_VLAN_GLOBAL; 1788 } 1789 1790 return dpaa2_switch_port_add_vlan(port_priv, vlan->vid, vlan->flags); 1791 } 1792 1793 static int dpaa2_switch_port_lookup_address(struct net_device *netdev, int is_uc, 1794 const unsigned char *addr) 1795 { 1796 struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc; 1797 struct netdev_hw_addr *ha; 1798 1799 netif_addr_lock_bh(netdev); 1800 list_for_each_entry(ha, &list->list, list) { 1801 if (ether_addr_equal(ha->addr, addr)) { 1802 netif_addr_unlock_bh(netdev); 1803 return 1; 1804 } 1805 } 1806 netif_addr_unlock_bh(netdev); 1807 return 0; 1808 } 1809 1810 static int dpaa2_switch_port_mdb_add(struct net_device *netdev, 1811 const struct switchdev_obj_port_mdb *mdb) 1812 { 1813 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1814 int err; 1815 1816 /* Check if address is already set on this port */ 1817 if (dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1818 return -EEXIST; 1819 1820 err = dpaa2_switch_port_fdb_add_mc(port_priv, mdb->addr); 1821 if (err) 1822 return err; 1823 1824 err = dev_mc_add(netdev, mdb->addr); 1825 if (err) { 1826 netdev_err(netdev, "dev_mc_add err %d\n", err); 1827 dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1828 } 1829 1830 return err; 1831 } 1832 1833 static int dpaa2_switch_port_obj_add(struct net_device *netdev, 1834 const struct switchdev_obj *obj) 1835 { 1836 int err; 1837 1838 switch (obj->id) { 1839 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1840 err = dpaa2_switch_port_vlans_add(netdev, 1841 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1842 break; 1843 case SWITCHDEV_OBJ_ID_PORT_MDB: 1844 err = dpaa2_switch_port_mdb_add(netdev, 1845 SWITCHDEV_OBJ_PORT_MDB(obj)); 1846 break; 1847 default: 1848 err = -EOPNOTSUPP; 1849 break; 1850 } 1851 1852 return err; 1853 } 1854 1855 static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid) 1856 { 1857 struct ethsw_core *ethsw = port_priv->ethsw_data; 1858 struct net_device *netdev = port_priv->netdev; 1859 struct dpsw_vlan_if_cfg vcfg; 1860 int i, err; 1861 1862 if (!port_priv->vlans[vid]) 1863 return -ENOENT; 1864 1865 if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) { 1866 /* If we are deleting the PVID of a port, use VLAN 4095 instead 1867 * as we are sure that neither the bridge nor the 8021q module 1868 * will use it 1869 */ 1870 err = dpaa2_switch_port_set_pvid(port_priv, 4095); 1871 if (err) 1872 return err; 1873 } 1874 1875 vcfg.num_ifs = 1; 1876 vcfg.if_id[0] = port_priv->idx; 1877 if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) { 1878 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, 1879 ethsw->dpsw_handle, 1880 vid, &vcfg); 1881 if (err) { 1882 netdev_err(netdev, 1883 "dpsw_vlan_remove_if_untagged err %d\n", 1884 err); 1885 } 1886 port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED; 1887 } 1888 1889 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { 1890 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1891 vid, &vcfg); 1892 if (err) { 1893 netdev_err(netdev, 1894 "dpsw_vlan_remove_if err %d\n", err); 1895 return err; 1896 } 1897 port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER; 1898 1899 /* Delete VLAN from switch if it is no longer configured on 1900 * any port 1901 */ 1902 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 1903 if (ethsw->ports[i] && 1904 ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER) 1905 return 0; /* Found a port member in VID */ 1906 } 1907 1908 ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL; 1909 1910 err = dpaa2_switch_dellink(ethsw, vid); 1911 if (err) 1912 return err; 1913 } 1914 1915 return 0; 1916 } 1917 1918 int dpaa2_switch_port_vlans_del(struct net_device *netdev, 1919 const struct switchdev_obj_port_vlan *vlan) 1920 { 1921 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1922 1923 if (netif_is_bridge_master(vlan->obj.orig_dev)) 1924 return -EOPNOTSUPP; 1925 1926 return dpaa2_switch_port_del_vlan(port_priv, vlan->vid); 1927 } 1928 1929 static int dpaa2_switch_port_mdb_del(struct net_device *netdev, 1930 const struct switchdev_obj_port_mdb *mdb) 1931 { 1932 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1933 int err; 1934 1935 if (!dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1936 return -ENOENT; 1937 1938 err = dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1939 if (err) 1940 return err; 1941 1942 err = dev_mc_del(netdev, mdb->addr); 1943 if (err) { 1944 netdev_err(netdev, "dev_mc_del err %d\n", err); 1945 return err; 1946 } 1947 1948 return err; 1949 } 1950 1951 static int dpaa2_switch_port_obj_del(struct net_device *netdev, 1952 const struct switchdev_obj *obj) 1953 { 1954 int err; 1955 1956 switch (obj->id) { 1957 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1958 err = dpaa2_switch_port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj)); 1959 break; 1960 case SWITCHDEV_OBJ_ID_PORT_MDB: 1961 err = dpaa2_switch_port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj)); 1962 break; 1963 default: 1964 err = -EOPNOTSUPP; 1965 break; 1966 } 1967 return err; 1968 } 1969 1970 static int dpaa2_switch_port_attr_set_event(struct net_device *netdev, 1971 struct switchdev_notifier_port_attr_info *ptr) 1972 { 1973 int err; 1974 1975 err = switchdev_handle_port_attr_set(netdev, ptr, 1976 dpaa2_switch_port_dev_check, 1977 dpaa2_switch_port_attr_set); 1978 return notifier_from_errno(err); 1979 } 1980 1981 static struct notifier_block dpaa2_switch_port_switchdev_nb; 1982 static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb; 1983 1984 static int dpaa2_switch_port_bridge_join(struct net_device *netdev, 1985 struct net_device *upper_dev, 1986 struct netlink_ext_ack *extack) 1987 { 1988 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1989 struct ethsw_core *ethsw = port_priv->ethsw_data; 1990 struct ethsw_port_priv *other_port_priv; 1991 struct net_device *other_dev; 1992 struct list_head *iter; 1993 bool learn_ena; 1994 int err; 1995 1996 netdev_for_each_lower_dev(upper_dev, other_dev, iter) { 1997 if (!dpaa2_switch_port_dev_check(other_dev)) 1998 continue; 1999 2000 other_port_priv = netdev_priv(other_dev); 2001 if (other_port_priv->ethsw_data != port_priv->ethsw_data) { 2002 NL_SET_ERR_MSG_MOD(extack, 2003 "Interface from a different DPSW is in the bridge already"); 2004 return -EINVAL; 2005 } 2006 } 2007 2008 /* Delete the previously manually installed VLAN 1 */ 2009 err = dpaa2_switch_port_del_vlan(port_priv, 1); 2010 if (err) 2011 return err; 2012 2013 dpaa2_switch_port_set_fdb(port_priv, upper_dev); 2014 2015 /* Inherit the initial bridge port learning state */ 2016 learn_ena = br_port_flag_is_set(netdev, BR_LEARNING); 2017 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 2018 port_priv->learn_ena = learn_ena; 2019 2020 /* Setup the egress flood policy (broadcast, unknown unicast) */ 2021 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2022 if (err) 2023 goto err_egress_flood; 2024 2025 err = switchdev_bridge_port_offload(netdev, netdev, NULL, 2026 &dpaa2_switch_port_switchdev_nb, 2027 &dpaa2_switch_port_switchdev_blocking_nb, 2028 false, extack); 2029 if (err) 2030 goto err_switchdev_offload; 2031 2032 return 0; 2033 2034 err_switchdev_offload: 2035 err_egress_flood: 2036 dpaa2_switch_port_set_fdb(port_priv, NULL); 2037 return err; 2038 } 2039 2040 static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg) 2041 { 2042 __be16 vlan_proto = htons(ETH_P_8021Q); 2043 2044 if (vdev) 2045 vlan_proto = vlan_dev_vlan_proto(vdev); 2046 2047 return dpaa2_switch_port_vlan_kill(arg, vlan_proto, vid); 2048 } 2049 2050 static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg) 2051 { 2052 __be16 vlan_proto = htons(ETH_P_8021Q); 2053 2054 if (vdev) 2055 vlan_proto = vlan_dev_vlan_proto(vdev); 2056 2057 return dpaa2_switch_port_vlan_add(arg, vlan_proto, vid); 2058 } 2059 2060 static void dpaa2_switch_port_pre_bridge_leave(struct net_device *netdev) 2061 { 2062 switchdev_bridge_port_unoffload(netdev, NULL, 2063 &dpaa2_switch_port_switchdev_nb, 2064 &dpaa2_switch_port_switchdev_blocking_nb); 2065 } 2066 2067 static int dpaa2_switch_port_bridge_leave(struct net_device *netdev) 2068 { 2069 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2070 struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; 2071 struct ethsw_core *ethsw = port_priv->ethsw_data; 2072 int err; 2073 2074 /* First of all, fast age any learn FDB addresses on this switch port */ 2075 dpaa2_switch_port_fast_age(port_priv); 2076 2077 /* Clear all RX VLANs installed through vlan_vid_add() either as VLAN 2078 * upper devices or otherwise from the FDB table that we are about to 2079 * leave 2080 */ 2081 err = vlan_for_each(netdev, dpaa2_switch_port_clear_rxvlan, netdev); 2082 if (err) 2083 netdev_err(netdev, "Unable to clear RX VLANs from old FDB table, err (%d)\n", err); 2084 2085 dpaa2_switch_port_set_fdb(port_priv, NULL); 2086 2087 /* Restore all RX VLANs into the new FDB table that we just joined */ 2088 err = vlan_for_each(netdev, dpaa2_switch_port_restore_rxvlan, netdev); 2089 if (err) 2090 netdev_err(netdev, "Unable to restore RX VLANs to the new FDB, err (%d)\n", err); 2091 2092 /* Reset the flooding state to denote that this port can send any 2093 * packet in standalone mode. With this, we are also ensuring that any 2094 * later bridge join will have the flooding flag on. 2095 */ 2096 port_priv->bcast_flood = true; 2097 port_priv->ucast_flood = true; 2098 2099 /* Setup the egress flood policy (broadcast, unknown unicast). 2100 * When the port is not under a bridge, only the CTRL interface is part 2101 * of the flooding domain besides the actual port 2102 */ 2103 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2104 if (err) 2105 return err; 2106 2107 /* Recreate the egress flood domain of the FDB that we just left */ 2108 err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id); 2109 if (err) 2110 return err; 2111 2112 /* No HW learning when not under a bridge */ 2113 err = dpaa2_switch_port_set_learning(port_priv, false); 2114 if (err) 2115 return err; 2116 port_priv->learn_ena = false; 2117 2118 /* Add the VLAN 1 as PVID when not under a bridge. We need this since 2119 * the dpaa2 switch interfaces are not capable to be VLAN unaware 2120 */ 2121 return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID, 2122 BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID); 2123 } 2124 2125 static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev) 2126 { 2127 struct net_device *upper_dev; 2128 struct list_head *iter; 2129 2130 /* RCU read lock not necessary because we have write-side protection 2131 * (rtnl_mutex), however a non-rcu iterator does not exist. 2132 */ 2133 netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter) 2134 if (is_vlan_dev(upper_dev)) 2135 return -EOPNOTSUPP; 2136 2137 return 0; 2138 } 2139 2140 static int 2141 dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev, 2142 struct net_device *upper_dev, 2143 struct netlink_ext_ack *extack) 2144 { 2145 int err; 2146 2147 if (!br_vlan_enabled(upper_dev)) { 2148 NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge"); 2149 return -EOPNOTSUPP; 2150 } 2151 2152 err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev); 2153 if (err) { 2154 NL_SET_ERR_MSG_MOD(extack, 2155 "Cannot join a bridge while VLAN uppers are present"); 2156 return 0; 2157 } 2158 2159 return 0; 2160 } 2161 2162 static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, 2163 unsigned long event, void *ptr) 2164 { 2165 struct net_device *netdev = netdev_notifier_info_to_dev(ptr); 2166 struct netdev_notifier_changeupper_info *info = ptr; 2167 struct netlink_ext_ack *extack; 2168 struct net_device *upper_dev; 2169 int err = 0; 2170 2171 if (!dpaa2_switch_port_dev_check(netdev)) 2172 return NOTIFY_DONE; 2173 2174 extack = netdev_notifier_info_to_extack(&info->info); 2175 2176 switch (event) { 2177 case NETDEV_PRECHANGEUPPER: 2178 upper_dev = info->upper_dev; 2179 if (!netif_is_bridge_master(upper_dev)) 2180 break; 2181 2182 err = dpaa2_switch_prechangeupper_sanity_checks(netdev, 2183 upper_dev, 2184 extack); 2185 if (err) 2186 goto out; 2187 2188 if (!info->linking) 2189 dpaa2_switch_port_pre_bridge_leave(netdev); 2190 2191 break; 2192 case NETDEV_CHANGEUPPER: 2193 upper_dev = info->upper_dev; 2194 if (netif_is_bridge_master(upper_dev)) { 2195 if (info->linking) 2196 err = dpaa2_switch_port_bridge_join(netdev, 2197 upper_dev, 2198 extack); 2199 else 2200 err = dpaa2_switch_port_bridge_leave(netdev); 2201 } 2202 break; 2203 } 2204 2205 out: 2206 return notifier_from_errno(err); 2207 } 2208 2209 struct ethsw_switchdev_event_work { 2210 struct work_struct work; 2211 struct switchdev_notifier_fdb_info fdb_info; 2212 struct net_device *dev; 2213 unsigned long event; 2214 }; 2215 2216 static void dpaa2_switch_event_work(struct work_struct *work) 2217 { 2218 struct ethsw_switchdev_event_work *switchdev_work = 2219 container_of(work, struct ethsw_switchdev_event_work, work); 2220 struct net_device *dev = switchdev_work->dev; 2221 struct switchdev_notifier_fdb_info *fdb_info; 2222 int err; 2223 2224 rtnl_lock(); 2225 fdb_info = &switchdev_work->fdb_info; 2226 2227 switch (switchdev_work->event) { 2228 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2229 if (!fdb_info->added_by_user || fdb_info->is_local) 2230 break; 2231 if (is_unicast_ether_addr(fdb_info->addr)) 2232 err = dpaa2_switch_port_fdb_add_uc(netdev_priv(dev), 2233 fdb_info->addr); 2234 else 2235 err = dpaa2_switch_port_fdb_add_mc(netdev_priv(dev), 2236 fdb_info->addr); 2237 if (err) 2238 break; 2239 fdb_info->offloaded = true; 2240 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, 2241 &fdb_info->info, NULL); 2242 break; 2243 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2244 if (!fdb_info->added_by_user || fdb_info->is_local) 2245 break; 2246 if (is_unicast_ether_addr(fdb_info->addr)) 2247 dpaa2_switch_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr); 2248 else 2249 dpaa2_switch_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr); 2250 break; 2251 } 2252 2253 rtnl_unlock(); 2254 kfree(switchdev_work->fdb_info.addr); 2255 kfree(switchdev_work); 2256 dev_put(dev); 2257 } 2258 2259 /* Called under rcu_read_lock() */ 2260 static int dpaa2_switch_port_event(struct notifier_block *nb, 2261 unsigned long event, void *ptr) 2262 { 2263 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2264 struct ethsw_port_priv *port_priv = netdev_priv(dev); 2265 struct ethsw_switchdev_event_work *switchdev_work; 2266 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2267 struct ethsw_core *ethsw = port_priv->ethsw_data; 2268 2269 if (event == SWITCHDEV_PORT_ATTR_SET) 2270 return dpaa2_switch_port_attr_set_event(dev, ptr); 2271 2272 if (!dpaa2_switch_port_dev_check(dev)) 2273 return NOTIFY_DONE; 2274 2275 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2276 if (!switchdev_work) 2277 return NOTIFY_BAD; 2278 2279 INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work); 2280 switchdev_work->dev = dev; 2281 switchdev_work->event = event; 2282 2283 switch (event) { 2284 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2285 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2286 memcpy(&switchdev_work->fdb_info, ptr, 2287 sizeof(switchdev_work->fdb_info)); 2288 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2289 if (!switchdev_work->fdb_info.addr) 2290 goto err_addr_alloc; 2291 2292 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2293 fdb_info->addr); 2294 2295 /* Take a reference on the device to avoid being freed. */ 2296 dev_hold(dev); 2297 break; 2298 default: 2299 kfree(switchdev_work); 2300 return NOTIFY_DONE; 2301 } 2302 2303 queue_work(ethsw->workqueue, &switchdev_work->work); 2304 2305 return NOTIFY_DONE; 2306 2307 err_addr_alloc: 2308 kfree(switchdev_work); 2309 return NOTIFY_BAD; 2310 } 2311 2312 static int dpaa2_switch_port_obj_event(unsigned long event, 2313 struct net_device *netdev, 2314 struct switchdev_notifier_port_obj_info *port_obj_info) 2315 { 2316 int err = -EOPNOTSUPP; 2317 2318 if (!dpaa2_switch_port_dev_check(netdev)) 2319 return NOTIFY_DONE; 2320 2321 switch (event) { 2322 case SWITCHDEV_PORT_OBJ_ADD: 2323 err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj); 2324 break; 2325 case SWITCHDEV_PORT_OBJ_DEL: 2326 err = dpaa2_switch_port_obj_del(netdev, port_obj_info->obj); 2327 break; 2328 } 2329 2330 port_obj_info->handled = true; 2331 return notifier_from_errno(err); 2332 } 2333 2334 static int dpaa2_switch_port_blocking_event(struct notifier_block *nb, 2335 unsigned long event, void *ptr) 2336 { 2337 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2338 2339 switch (event) { 2340 case SWITCHDEV_PORT_OBJ_ADD: 2341 case SWITCHDEV_PORT_OBJ_DEL: 2342 return dpaa2_switch_port_obj_event(event, dev, ptr); 2343 case SWITCHDEV_PORT_ATTR_SET: 2344 return dpaa2_switch_port_attr_set_event(dev, ptr); 2345 } 2346 2347 return NOTIFY_DONE; 2348 } 2349 2350 /* Build a linear skb based on a single-buffer frame descriptor */ 2351 static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw, 2352 const struct dpaa2_fd *fd) 2353 { 2354 u16 fd_offset = dpaa2_fd_get_offset(fd); 2355 dma_addr_t addr = dpaa2_fd_get_addr(fd); 2356 u32 fd_length = dpaa2_fd_get_len(fd); 2357 struct device *dev = ethsw->dev; 2358 struct sk_buff *skb = NULL; 2359 void *fd_vaddr; 2360 2361 fd_vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, addr); 2362 dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE, 2363 DMA_FROM_DEVICE); 2364 2365 skb = build_skb(fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE + 2366 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); 2367 if (unlikely(!skb)) { 2368 dev_err(dev, "build_skb() failed\n"); 2369 return NULL; 2370 } 2371 2372 skb_reserve(skb, fd_offset); 2373 skb_put(skb, fd_length); 2374 2375 ethsw->buf_count--; 2376 2377 return skb; 2378 } 2379 2380 static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq, 2381 const struct dpaa2_fd *fd) 2382 { 2383 dpaa2_switch_free_fd(fq->ethsw, fd); 2384 } 2385 2386 static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq, 2387 const struct dpaa2_fd *fd) 2388 { 2389 struct ethsw_core *ethsw = fq->ethsw; 2390 struct ethsw_port_priv *port_priv; 2391 struct net_device *netdev; 2392 struct vlan_ethhdr *hdr; 2393 struct sk_buff *skb; 2394 u16 vlan_tci, vid; 2395 int if_id, err; 2396 2397 /* get switch ingress interface ID */ 2398 if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF; 2399 2400 if (if_id >= ethsw->sw_attr.num_ifs) { 2401 dev_err(ethsw->dev, "Frame received from unknown interface!\n"); 2402 goto err_free_fd; 2403 } 2404 port_priv = ethsw->ports[if_id]; 2405 netdev = port_priv->netdev; 2406 2407 /* build the SKB based on the FD received */ 2408 if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) { 2409 if (net_ratelimit()) { 2410 netdev_err(netdev, "Received invalid frame format\n"); 2411 goto err_free_fd; 2412 } 2413 } 2414 2415 skb = dpaa2_switch_build_linear_skb(ethsw, fd); 2416 if (unlikely(!skb)) 2417 goto err_free_fd; 2418 2419 skb_reset_mac_header(skb); 2420 2421 /* Remove the VLAN header if the packet that we just received has a vid 2422 * equal to the port PVIDs. Since the dpaa2-switch can operate only in 2423 * VLAN-aware mode and no alterations are made on the packet when it's 2424 * redirected/mirrored to the control interface, we are sure that there 2425 * will always be a VLAN header present. 2426 */ 2427 hdr = vlan_eth_hdr(skb); 2428 vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK; 2429 if (vid == port_priv->pvid) { 2430 err = __skb_vlan_pop(skb, &vlan_tci); 2431 if (err) { 2432 dev_info(ethsw->dev, "__skb_vlan_pop() returned %d", err); 2433 goto err_free_fd; 2434 } 2435 } 2436 2437 skb->dev = netdev; 2438 skb->protocol = eth_type_trans(skb, skb->dev); 2439 2440 /* Setup the offload_fwd_mark only if the port is under a bridge */ 2441 skb->offload_fwd_mark = !!(port_priv->fdb->bridge_dev); 2442 2443 netif_receive_skb(skb); 2444 2445 return; 2446 2447 err_free_fd: 2448 dpaa2_switch_free_fd(ethsw, fd); 2449 } 2450 2451 static void dpaa2_switch_detect_features(struct ethsw_core *ethsw) 2452 { 2453 ethsw->features = 0; 2454 2455 if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6)) 2456 ethsw->features |= ETHSW_FEATURE_MAC_ADDR; 2457 } 2458 2459 static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw) 2460 { 2461 struct dpsw_ctrl_if_attr ctrl_if_attr; 2462 struct device *dev = ethsw->dev; 2463 int i = 0; 2464 int err; 2465 2466 err = dpsw_ctrl_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 2467 &ctrl_if_attr); 2468 if (err) { 2469 dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n", err); 2470 return err; 2471 } 2472 2473 ethsw->fq[i].fqid = ctrl_if_attr.rx_fqid; 2474 ethsw->fq[i].ethsw = ethsw; 2475 ethsw->fq[i++].type = DPSW_QUEUE_RX; 2476 2477 ethsw->fq[i].fqid = ctrl_if_attr.tx_err_conf_fqid; 2478 ethsw->fq[i].ethsw = ethsw; 2479 ethsw->fq[i++].type = DPSW_QUEUE_TX_ERR_CONF; 2480 2481 return 0; 2482 } 2483 2484 /* Free buffers acquired from the buffer pool or which were meant to 2485 * be released in the pool 2486 */ 2487 static void dpaa2_switch_free_bufs(struct ethsw_core *ethsw, u64 *buf_array, int count) 2488 { 2489 struct device *dev = ethsw->dev; 2490 void *vaddr; 2491 int i; 2492 2493 for (i = 0; i < count; i++) { 2494 vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, buf_array[i]); 2495 dma_unmap_page(dev, buf_array[i], DPAA2_SWITCH_RX_BUF_SIZE, 2496 DMA_FROM_DEVICE); 2497 free_pages((unsigned long)vaddr, 0); 2498 } 2499 } 2500 2501 /* Perform a single release command to add buffers 2502 * to the specified buffer pool 2503 */ 2504 static int dpaa2_switch_add_bufs(struct ethsw_core *ethsw, u16 bpid) 2505 { 2506 struct device *dev = ethsw->dev; 2507 u64 buf_array[BUFS_PER_CMD]; 2508 struct page *page; 2509 int retries = 0; 2510 dma_addr_t addr; 2511 int err; 2512 int i; 2513 2514 for (i = 0; i < BUFS_PER_CMD; i++) { 2515 /* Allocate one page for each Rx buffer. WRIOP sees 2516 * the entire page except for a tailroom reserved for 2517 * skb shared info 2518 */ 2519 page = dev_alloc_pages(0); 2520 if (!page) { 2521 dev_err(dev, "buffer allocation failed\n"); 2522 goto err_alloc; 2523 } 2524 2525 addr = dma_map_page(dev, page, 0, DPAA2_SWITCH_RX_BUF_SIZE, 2526 DMA_FROM_DEVICE); 2527 if (dma_mapping_error(dev, addr)) { 2528 dev_err(dev, "dma_map_single() failed\n"); 2529 goto err_map; 2530 } 2531 buf_array[i] = addr; 2532 } 2533 2534 release_bufs: 2535 /* In case the portal is busy, retry until successful or 2536 * max retries hit. 2537 */ 2538 while ((err = dpaa2_io_service_release(NULL, bpid, 2539 buf_array, i)) == -EBUSY) { 2540 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) 2541 break; 2542 2543 cpu_relax(); 2544 } 2545 2546 /* If release command failed, clean up and bail out. */ 2547 if (err) { 2548 dpaa2_switch_free_bufs(ethsw, buf_array, i); 2549 return 0; 2550 } 2551 2552 return i; 2553 2554 err_map: 2555 __free_pages(page, 0); 2556 err_alloc: 2557 /* If we managed to allocate at least some buffers, 2558 * release them to hardware 2559 */ 2560 if (i) 2561 goto release_bufs; 2562 2563 return 0; 2564 } 2565 2566 static int dpaa2_switch_refill_bp(struct ethsw_core *ethsw) 2567 { 2568 int *count = ðsw->buf_count; 2569 int new_count; 2570 int err = 0; 2571 2572 if (unlikely(*count < DPAA2_ETHSW_REFILL_THRESH)) { 2573 do { 2574 new_count = dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2575 if (unlikely(!new_count)) { 2576 /* Out of memory; abort for now, we'll 2577 * try later on 2578 */ 2579 break; 2580 } 2581 *count += new_count; 2582 } while (*count < DPAA2_ETHSW_NUM_BUFS); 2583 2584 if (unlikely(*count < DPAA2_ETHSW_NUM_BUFS)) 2585 err = -ENOMEM; 2586 } 2587 2588 return err; 2589 } 2590 2591 static int dpaa2_switch_seed_bp(struct ethsw_core *ethsw) 2592 { 2593 int *count, i; 2594 2595 for (i = 0; i < DPAA2_ETHSW_NUM_BUFS; i += BUFS_PER_CMD) { 2596 count = ðsw->buf_count; 2597 *count += dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2598 2599 if (unlikely(*count < BUFS_PER_CMD)) 2600 return -ENOMEM; 2601 } 2602 2603 return 0; 2604 } 2605 2606 static void dpaa2_switch_drain_bp(struct ethsw_core *ethsw) 2607 { 2608 u64 buf_array[BUFS_PER_CMD]; 2609 int ret; 2610 2611 do { 2612 ret = dpaa2_io_service_acquire(NULL, ethsw->bpid, 2613 buf_array, BUFS_PER_CMD); 2614 if (ret < 0) { 2615 dev_err(ethsw->dev, 2616 "dpaa2_io_service_acquire() = %d\n", ret); 2617 return; 2618 } 2619 dpaa2_switch_free_bufs(ethsw, buf_array, ret); 2620 2621 } while (ret); 2622 } 2623 2624 static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw) 2625 { 2626 struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 }; 2627 struct device *dev = ethsw->dev; 2628 struct fsl_mc_device *dpbp_dev; 2629 struct dpbp_attr dpbp_attrs; 2630 int err; 2631 2632 err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPBP, 2633 &dpbp_dev); 2634 if (err) { 2635 if (err == -ENXIO) 2636 err = -EPROBE_DEFER; 2637 else 2638 dev_err(dev, "DPBP device allocation failed\n"); 2639 return err; 2640 } 2641 ethsw->dpbp_dev = dpbp_dev; 2642 2643 err = dpbp_open(ethsw->mc_io, 0, dpbp_dev->obj_desc.id, 2644 &dpbp_dev->mc_handle); 2645 if (err) { 2646 dev_err(dev, "dpbp_open() failed\n"); 2647 goto err_open; 2648 } 2649 2650 err = dpbp_reset(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2651 if (err) { 2652 dev_err(dev, "dpbp_reset() failed\n"); 2653 goto err_reset; 2654 } 2655 2656 err = dpbp_enable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2657 if (err) { 2658 dev_err(dev, "dpbp_enable() failed\n"); 2659 goto err_enable; 2660 } 2661 2662 err = dpbp_get_attributes(ethsw->mc_io, 0, dpbp_dev->mc_handle, 2663 &dpbp_attrs); 2664 if (err) { 2665 dev_err(dev, "dpbp_get_attributes() failed\n"); 2666 goto err_get_attr; 2667 } 2668 2669 dpsw_ctrl_if_pools_cfg.num_dpbp = 1; 2670 dpsw_ctrl_if_pools_cfg.pools[0].dpbp_id = dpbp_attrs.id; 2671 dpsw_ctrl_if_pools_cfg.pools[0].buffer_size = DPAA2_SWITCH_RX_BUF_SIZE; 2672 dpsw_ctrl_if_pools_cfg.pools[0].backup_pool = 0; 2673 2674 err = dpsw_ctrl_if_set_pools(ethsw->mc_io, 0, ethsw->dpsw_handle, 2675 &dpsw_ctrl_if_pools_cfg); 2676 if (err) { 2677 dev_err(dev, "dpsw_ctrl_if_set_pools() failed\n"); 2678 goto err_get_attr; 2679 } 2680 ethsw->bpid = dpbp_attrs.id; 2681 2682 return 0; 2683 2684 err_get_attr: 2685 dpbp_disable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2686 err_enable: 2687 err_reset: 2688 dpbp_close(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2689 err_open: 2690 fsl_mc_object_free(dpbp_dev); 2691 return err; 2692 } 2693 2694 static void dpaa2_switch_free_dpbp(struct ethsw_core *ethsw) 2695 { 2696 dpbp_disable(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2697 dpbp_close(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2698 fsl_mc_object_free(ethsw->dpbp_dev); 2699 } 2700 2701 static int dpaa2_switch_alloc_rings(struct ethsw_core *ethsw) 2702 { 2703 int i; 2704 2705 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2706 ethsw->fq[i].store = 2707 dpaa2_io_store_create(DPAA2_SWITCH_STORE_SIZE, 2708 ethsw->dev); 2709 if (!ethsw->fq[i].store) { 2710 dev_err(ethsw->dev, "dpaa2_io_store_create failed\n"); 2711 while (--i >= 0) 2712 dpaa2_io_store_destroy(ethsw->fq[i].store); 2713 return -ENOMEM; 2714 } 2715 } 2716 2717 return 0; 2718 } 2719 2720 static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw) 2721 { 2722 int i; 2723 2724 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2725 dpaa2_io_store_destroy(ethsw->fq[i].store); 2726 } 2727 2728 static int dpaa2_switch_pull_fq(struct dpaa2_switch_fq *fq) 2729 { 2730 int err, retries = 0; 2731 2732 /* Try to pull from the FQ while the portal is busy and we didn't hit 2733 * the maximum number fo retries 2734 */ 2735 do { 2736 err = dpaa2_io_service_pull_fq(NULL, fq->fqid, fq->store); 2737 cpu_relax(); 2738 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2739 2740 if (unlikely(err)) 2741 dev_err(fq->ethsw->dev, "dpaa2_io_service_pull err %d", err); 2742 2743 return err; 2744 } 2745 2746 /* Consume all frames pull-dequeued into the store */ 2747 static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq) 2748 { 2749 struct ethsw_core *ethsw = fq->ethsw; 2750 int cleaned = 0, is_last; 2751 struct dpaa2_dq *dq; 2752 int retries = 0; 2753 2754 do { 2755 /* Get the next available FD from the store */ 2756 dq = dpaa2_io_store_next(fq->store, &is_last); 2757 if (unlikely(!dq)) { 2758 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) { 2759 dev_err_once(ethsw->dev, 2760 "No valid dequeue response\n"); 2761 return -ETIMEDOUT; 2762 } 2763 continue; 2764 } 2765 2766 if (fq->type == DPSW_QUEUE_RX) 2767 dpaa2_switch_rx(fq, dpaa2_dq_fd(dq)); 2768 else 2769 dpaa2_switch_tx_conf(fq, dpaa2_dq_fd(dq)); 2770 cleaned++; 2771 2772 } while (!is_last); 2773 2774 return cleaned; 2775 } 2776 2777 /* NAPI poll routine */ 2778 static int dpaa2_switch_poll(struct napi_struct *napi, int budget) 2779 { 2780 int err, cleaned = 0, store_cleaned, work_done; 2781 struct dpaa2_switch_fq *fq; 2782 int retries = 0; 2783 2784 fq = container_of(napi, struct dpaa2_switch_fq, napi); 2785 2786 do { 2787 err = dpaa2_switch_pull_fq(fq); 2788 if (unlikely(err)) 2789 break; 2790 2791 /* Refill pool if appropriate */ 2792 dpaa2_switch_refill_bp(fq->ethsw); 2793 2794 store_cleaned = dpaa2_switch_store_consume(fq); 2795 cleaned += store_cleaned; 2796 2797 if (cleaned >= budget) { 2798 work_done = budget; 2799 goto out; 2800 } 2801 2802 } while (store_cleaned); 2803 2804 /* We didn't consume the entire budget, so finish napi and re-enable 2805 * data availability notifications 2806 */ 2807 napi_complete_done(napi, cleaned); 2808 do { 2809 err = dpaa2_io_service_rearm(NULL, &fq->nctx); 2810 cpu_relax(); 2811 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2812 2813 work_done = max(cleaned, 1); 2814 out: 2815 2816 return work_done; 2817 } 2818 2819 static void dpaa2_switch_fqdan_cb(struct dpaa2_io_notification_ctx *nctx) 2820 { 2821 struct dpaa2_switch_fq *fq; 2822 2823 fq = container_of(nctx, struct dpaa2_switch_fq, nctx); 2824 2825 napi_schedule(&fq->napi); 2826 } 2827 2828 static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw) 2829 { 2830 struct dpsw_ctrl_if_queue_cfg queue_cfg; 2831 struct dpaa2_io_notification_ctx *nctx; 2832 int err, i, j; 2833 2834 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2835 nctx = ðsw->fq[i].nctx; 2836 2837 /* Register a new software context for the FQID. 2838 * By using NULL as the first parameter, we specify that we do 2839 * not care on which cpu are interrupts received for this queue 2840 */ 2841 nctx->is_cdan = 0; 2842 nctx->id = ethsw->fq[i].fqid; 2843 nctx->desired_cpu = DPAA2_IO_ANY_CPU; 2844 nctx->cb = dpaa2_switch_fqdan_cb; 2845 err = dpaa2_io_service_register(NULL, nctx, ethsw->dev); 2846 if (err) { 2847 err = -EPROBE_DEFER; 2848 goto err_register; 2849 } 2850 2851 queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST | 2852 DPSW_CTRL_IF_QUEUE_OPT_USER_CTX; 2853 queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO; 2854 queue_cfg.dest_cfg.dest_id = nctx->dpio_id; 2855 queue_cfg.dest_cfg.priority = 0; 2856 queue_cfg.user_ctx = nctx->qman64; 2857 2858 err = dpsw_ctrl_if_set_queue(ethsw->mc_io, 0, 2859 ethsw->dpsw_handle, 2860 ethsw->fq[i].type, 2861 &queue_cfg); 2862 if (err) 2863 goto err_set_queue; 2864 } 2865 2866 return 0; 2867 2868 err_set_queue: 2869 dpaa2_io_service_deregister(NULL, nctx, ethsw->dev); 2870 err_register: 2871 for (j = 0; j < i; j++) 2872 dpaa2_io_service_deregister(NULL, ðsw->fq[j].nctx, 2873 ethsw->dev); 2874 2875 return err; 2876 } 2877 2878 static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw) 2879 { 2880 int i; 2881 2882 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2883 dpaa2_io_service_deregister(NULL, ðsw->fq[i].nctx, 2884 ethsw->dev); 2885 } 2886 2887 static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw) 2888 { 2889 int err; 2890 2891 /* setup FQs for Rx and Tx Conf */ 2892 err = dpaa2_switch_setup_fqs(ethsw); 2893 if (err) 2894 return err; 2895 2896 /* setup the buffer pool needed on the Rx path */ 2897 err = dpaa2_switch_setup_dpbp(ethsw); 2898 if (err) 2899 return err; 2900 2901 err = dpaa2_switch_alloc_rings(ethsw); 2902 if (err) 2903 goto err_free_dpbp; 2904 2905 err = dpaa2_switch_setup_dpio(ethsw); 2906 if (err) 2907 goto err_destroy_rings; 2908 2909 err = dpaa2_switch_seed_bp(ethsw); 2910 if (err) 2911 goto err_deregister_dpio; 2912 2913 err = dpsw_ctrl_if_enable(ethsw->mc_io, 0, ethsw->dpsw_handle); 2914 if (err) { 2915 dev_err(ethsw->dev, "dpsw_ctrl_if_enable err %d\n", err); 2916 goto err_drain_dpbp; 2917 } 2918 2919 return 0; 2920 2921 err_drain_dpbp: 2922 dpaa2_switch_drain_bp(ethsw); 2923 err_deregister_dpio: 2924 dpaa2_switch_free_dpio(ethsw); 2925 err_destroy_rings: 2926 dpaa2_switch_destroy_rings(ethsw); 2927 err_free_dpbp: 2928 dpaa2_switch_free_dpbp(ethsw); 2929 2930 return err; 2931 } 2932 2933 static void dpaa2_switch_remove_port(struct ethsw_core *ethsw, 2934 u16 port_idx) 2935 { 2936 struct ethsw_port_priv *port_priv = ethsw->ports[port_idx]; 2937 2938 rtnl_lock(); 2939 dpaa2_switch_port_disconnect_mac(port_priv); 2940 rtnl_unlock(); 2941 free_netdev(port_priv->netdev); 2942 ethsw->ports[port_idx] = NULL; 2943 } 2944 2945 static int dpaa2_switch_init(struct fsl_mc_device *sw_dev) 2946 { 2947 struct device *dev = &sw_dev->dev; 2948 struct ethsw_core *ethsw = dev_get_drvdata(dev); 2949 struct dpsw_vlan_if_cfg vcfg = {0}; 2950 struct dpsw_tci_cfg tci_cfg = {0}; 2951 struct dpsw_stp_cfg stp_cfg; 2952 int err; 2953 u16 i; 2954 2955 ethsw->dev_id = sw_dev->obj_desc.id; 2956 2957 err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, ðsw->dpsw_handle); 2958 if (err) { 2959 dev_err(dev, "dpsw_open err %d\n", err); 2960 return err; 2961 } 2962 2963 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 2964 ðsw->sw_attr); 2965 if (err) { 2966 dev_err(dev, "dpsw_get_attributes err %d\n", err); 2967 goto err_close; 2968 } 2969 2970 err = dpsw_get_api_version(ethsw->mc_io, 0, 2971 ðsw->major, 2972 ðsw->minor); 2973 if (err) { 2974 dev_err(dev, "dpsw_get_api_version err %d\n", err); 2975 goto err_close; 2976 } 2977 2978 /* Minimum supported DPSW version check */ 2979 if (ethsw->major < DPSW_MIN_VER_MAJOR || 2980 (ethsw->major == DPSW_MIN_VER_MAJOR && 2981 ethsw->minor < DPSW_MIN_VER_MINOR)) { 2982 dev_err(dev, "DPSW version %d:%d not supported. Use firmware 10.28.0 or greater.\n", 2983 ethsw->major, ethsw->minor); 2984 err = -EOPNOTSUPP; 2985 goto err_close; 2986 } 2987 2988 if (!dpaa2_switch_supports_cpu_traffic(ethsw)) { 2989 err = -EOPNOTSUPP; 2990 goto err_close; 2991 } 2992 2993 dpaa2_switch_detect_features(ethsw); 2994 2995 err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle); 2996 if (err) { 2997 dev_err(dev, "dpsw_reset err %d\n", err); 2998 goto err_close; 2999 } 3000 3001 stp_cfg.vlan_id = DEFAULT_VLAN_ID; 3002 stp_cfg.state = DPSW_STP_STATE_FORWARDING; 3003 3004 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3005 err = dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i); 3006 if (err) { 3007 dev_err(dev, "dpsw_if_disable err %d\n", err); 3008 goto err_close; 3009 } 3010 3011 err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i, 3012 &stp_cfg); 3013 if (err) { 3014 dev_err(dev, "dpsw_if_set_stp err %d for port %d\n", 3015 err, i); 3016 goto err_close; 3017 } 3018 3019 /* Switch starts with all ports configured to VLAN 1. Need to 3020 * remove this setting to allow configuration at bridge join 3021 */ 3022 vcfg.num_ifs = 1; 3023 vcfg.if_id[0] = i; 3024 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle, 3025 DEFAULT_VLAN_ID, &vcfg); 3026 if (err) { 3027 dev_err(dev, "dpsw_vlan_remove_if_untagged err %d\n", 3028 err); 3029 goto err_close; 3030 } 3031 3032 tci_cfg.vlan_id = 4095; 3033 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, i, &tci_cfg); 3034 if (err) { 3035 dev_err(dev, "dpsw_if_set_tci err %d\n", err); 3036 goto err_close; 3037 } 3038 3039 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 3040 DEFAULT_VLAN_ID, &vcfg); 3041 if (err) { 3042 dev_err(dev, "dpsw_vlan_remove_if err %d\n", err); 3043 goto err_close; 3044 } 3045 } 3046 3047 err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, DEFAULT_VLAN_ID); 3048 if (err) { 3049 dev_err(dev, "dpsw_vlan_remove err %d\n", err); 3050 goto err_close; 3051 } 3052 3053 ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered", 3054 WQ_MEM_RECLAIM, "ethsw", 3055 ethsw->sw_attr.id); 3056 if (!ethsw->workqueue) { 3057 err = -ENOMEM; 3058 goto err_close; 3059 } 3060 3061 err = dpsw_fdb_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, 0); 3062 if (err) 3063 goto err_destroy_ordered_workqueue; 3064 3065 err = dpaa2_switch_ctrl_if_setup(ethsw); 3066 if (err) 3067 goto err_destroy_ordered_workqueue; 3068 3069 return 0; 3070 3071 err_destroy_ordered_workqueue: 3072 destroy_workqueue(ethsw->workqueue); 3073 3074 err_close: 3075 dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3076 return err; 3077 } 3078 3079 /* Add an ACL to redirect frames with specific destination MAC address to 3080 * control interface 3081 */ 3082 static int dpaa2_switch_port_trap_mac_addr(struct ethsw_port_priv *port_priv, 3083 const char *mac) 3084 { 3085 struct dpaa2_switch_acl_entry acl_entry = {0}; 3086 3087 /* Match on the destination MAC address */ 3088 ether_addr_copy(acl_entry.key.match.l2_dest_mac, mac); 3089 eth_broadcast_addr(acl_entry.key.mask.l2_dest_mac); 3090 3091 /* Trap to CPU */ 3092 acl_entry.cfg.precedence = 0; 3093 acl_entry.cfg.result.action = DPSW_ACL_ACTION_REDIRECT_TO_CTRL_IF; 3094 3095 return dpaa2_switch_acl_entry_add(port_priv->filter_block, &acl_entry); 3096 } 3097 3098 static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port) 3099 { 3100 const char stpa[ETH_ALEN] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x00}; 3101 struct switchdev_obj_port_vlan vlan = { 3102 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 3103 .vid = DEFAULT_VLAN_ID, 3104 .flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID, 3105 }; 3106 struct net_device *netdev = port_priv->netdev; 3107 struct ethsw_core *ethsw = port_priv->ethsw_data; 3108 struct dpaa2_switch_filter_block *filter_block; 3109 struct dpsw_fdb_cfg fdb_cfg = {0}; 3110 struct dpsw_if_attr dpsw_if_attr; 3111 struct dpaa2_switch_fdb *fdb; 3112 struct dpsw_acl_cfg acl_cfg; 3113 u16 fdb_id, acl_tbl_id; 3114 int err; 3115 3116 /* Get the Tx queue for this specific port */ 3117 err = dpsw_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 3118 port_priv->idx, &dpsw_if_attr); 3119 if (err) { 3120 netdev_err(netdev, "dpsw_if_get_attributes err %d\n", err); 3121 return err; 3122 } 3123 port_priv->tx_qdid = dpsw_if_attr.qdid; 3124 3125 /* Create a FDB table for this particular switch port */ 3126 fdb_cfg.num_fdb_entries = ethsw->sw_attr.max_fdb_entries / ethsw->sw_attr.num_ifs; 3127 err = dpsw_fdb_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3128 &fdb_id, &fdb_cfg); 3129 if (err) { 3130 netdev_err(netdev, "dpsw_fdb_add err %d\n", err); 3131 return err; 3132 } 3133 3134 /* Find an unused dpaa2_switch_fdb structure and use it */ 3135 fdb = dpaa2_switch_fdb_get_unused(ethsw); 3136 fdb->fdb_id = fdb_id; 3137 fdb->in_use = true; 3138 fdb->bridge_dev = NULL; 3139 port_priv->fdb = fdb; 3140 3141 /* We need to add VLAN 1 as the PVID on this port until it is under a 3142 * bridge since the DPAA2 switch is not able to handle the traffic in a 3143 * VLAN unaware fashion 3144 */ 3145 err = dpaa2_switch_port_vlans_add(netdev, &vlan); 3146 if (err) 3147 return err; 3148 3149 /* Setup the egress flooding domains (broadcast, unknown unicast */ 3150 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 3151 if (err) 3152 return err; 3153 3154 /* Create an ACL table to be used by this switch port */ 3155 acl_cfg.max_entries = DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES; 3156 err = dpsw_acl_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3157 &acl_tbl_id, &acl_cfg); 3158 if (err) { 3159 netdev_err(netdev, "dpsw_acl_add err %d\n", err); 3160 return err; 3161 } 3162 3163 filter_block = dpaa2_switch_filter_block_get_unused(ethsw); 3164 filter_block->ethsw = ethsw; 3165 filter_block->acl_id = acl_tbl_id; 3166 filter_block->in_use = true; 3167 filter_block->num_acl_rules = 0; 3168 INIT_LIST_HEAD(&filter_block->acl_entries); 3169 INIT_LIST_HEAD(&filter_block->mirror_entries); 3170 3171 err = dpaa2_switch_port_acl_tbl_bind(port_priv, filter_block); 3172 if (err) 3173 return err; 3174 3175 err = dpaa2_switch_port_trap_mac_addr(port_priv, stpa); 3176 if (err) 3177 return err; 3178 3179 return err; 3180 } 3181 3182 static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw) 3183 { 3184 dpsw_ctrl_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3185 dpaa2_switch_free_dpio(ethsw); 3186 dpaa2_switch_destroy_rings(ethsw); 3187 dpaa2_switch_drain_bp(ethsw); 3188 dpaa2_switch_free_dpbp(ethsw); 3189 } 3190 3191 static void dpaa2_switch_teardown(struct fsl_mc_device *sw_dev) 3192 { 3193 struct device *dev = &sw_dev->dev; 3194 struct ethsw_core *ethsw = dev_get_drvdata(dev); 3195 int err; 3196 3197 dpaa2_switch_ctrl_if_teardown(ethsw); 3198 3199 destroy_workqueue(ethsw->workqueue); 3200 3201 err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3202 if (err) 3203 dev_warn(dev, "dpsw_close err %d\n", err); 3204 } 3205 3206 static int dpaa2_switch_remove(struct fsl_mc_device *sw_dev) 3207 { 3208 struct ethsw_port_priv *port_priv; 3209 struct ethsw_core *ethsw; 3210 struct device *dev; 3211 int i; 3212 3213 dev = &sw_dev->dev; 3214 ethsw = dev_get_drvdata(dev); 3215 3216 dpaa2_switch_teardown_irqs(sw_dev); 3217 3218 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3219 3220 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3221 port_priv = ethsw->ports[i]; 3222 unregister_netdev(port_priv->netdev); 3223 dpaa2_switch_remove_port(ethsw, i); 3224 } 3225 3226 kfree(ethsw->fdbs); 3227 kfree(ethsw->filter_blocks); 3228 kfree(ethsw->ports); 3229 3230 dpaa2_switch_teardown(sw_dev); 3231 3232 fsl_mc_portal_free(ethsw->mc_io); 3233 3234 kfree(ethsw); 3235 3236 dev_set_drvdata(dev, NULL); 3237 3238 return 0; 3239 } 3240 3241 static int dpaa2_switch_probe_port(struct ethsw_core *ethsw, 3242 u16 port_idx) 3243 { 3244 struct ethsw_port_priv *port_priv; 3245 struct device *dev = ethsw->dev; 3246 struct net_device *port_netdev; 3247 int err; 3248 3249 port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv)); 3250 if (!port_netdev) { 3251 dev_err(dev, "alloc_etherdev error\n"); 3252 return -ENOMEM; 3253 } 3254 3255 port_priv = netdev_priv(port_netdev); 3256 port_priv->netdev = port_netdev; 3257 port_priv->ethsw_data = ethsw; 3258 3259 port_priv->idx = port_idx; 3260 port_priv->stp_state = BR_STATE_FORWARDING; 3261 3262 SET_NETDEV_DEV(port_netdev, dev); 3263 port_netdev->netdev_ops = &dpaa2_switch_port_ops; 3264 port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops; 3265 3266 port_netdev->needed_headroom = DPAA2_SWITCH_NEEDED_HEADROOM; 3267 3268 port_priv->bcast_flood = true; 3269 port_priv->ucast_flood = true; 3270 3271 /* Set MTU limits */ 3272 port_netdev->min_mtu = ETH_MIN_MTU; 3273 port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH; 3274 3275 /* Populate the private port structure so that later calls to 3276 * dpaa2_switch_port_init() can use it. 3277 */ 3278 ethsw->ports[port_idx] = port_priv; 3279 3280 /* The DPAA2 switch's ingress path depends on the VLAN table, 3281 * thus we are not able to disable VLAN filtering. 3282 */ 3283 port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER | 3284 NETIF_F_HW_VLAN_STAG_FILTER | 3285 NETIF_F_HW_TC; 3286 3287 err = dpaa2_switch_port_init(port_priv, port_idx); 3288 if (err) 3289 goto err_port_probe; 3290 3291 err = dpaa2_switch_port_set_mac_addr(port_priv); 3292 if (err) 3293 goto err_port_probe; 3294 3295 err = dpaa2_switch_port_set_learning(port_priv, false); 3296 if (err) 3297 goto err_port_probe; 3298 port_priv->learn_ena = false; 3299 3300 err = dpaa2_switch_port_connect_mac(port_priv); 3301 if (err) 3302 goto err_port_probe; 3303 3304 return 0; 3305 3306 err_port_probe: 3307 free_netdev(port_netdev); 3308 ethsw->ports[port_idx] = NULL; 3309 3310 return err; 3311 } 3312 3313 static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev) 3314 { 3315 struct device *dev = &sw_dev->dev; 3316 struct ethsw_core *ethsw; 3317 int i, err; 3318 3319 /* Allocate switch core*/ 3320 ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL); 3321 3322 if (!ethsw) 3323 return -ENOMEM; 3324 3325 ethsw->dev = dev; 3326 ethsw->iommu_domain = iommu_get_domain_for_dev(dev); 3327 dev_set_drvdata(dev, ethsw); 3328 3329 err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, 3330 ðsw->mc_io); 3331 if (err) { 3332 if (err == -ENXIO) 3333 err = -EPROBE_DEFER; 3334 else 3335 dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); 3336 goto err_free_drvdata; 3337 } 3338 3339 err = dpaa2_switch_init(sw_dev); 3340 if (err) 3341 goto err_free_cmdport; 3342 3343 ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports), 3344 GFP_KERNEL); 3345 if (!(ethsw->ports)) { 3346 err = -ENOMEM; 3347 goto err_teardown; 3348 } 3349 3350 ethsw->fdbs = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->fdbs), 3351 GFP_KERNEL); 3352 if (!ethsw->fdbs) { 3353 err = -ENOMEM; 3354 goto err_free_ports; 3355 } 3356 3357 ethsw->filter_blocks = kcalloc(ethsw->sw_attr.num_ifs, 3358 sizeof(*ethsw->filter_blocks), 3359 GFP_KERNEL); 3360 if (!ethsw->filter_blocks) { 3361 err = -ENOMEM; 3362 goto err_free_fdbs; 3363 } 3364 3365 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3366 err = dpaa2_switch_probe_port(ethsw, i); 3367 if (err) 3368 goto err_free_netdev; 3369 } 3370 3371 /* Add a NAPI instance for each of the Rx queues. The first port's 3372 * net_device will be associated with the instances since we do not have 3373 * different queues for each switch ports. 3374 */ 3375 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 3376 netif_napi_add(ethsw->ports[0]->netdev, 3377 ðsw->fq[i].napi, dpaa2_switch_poll, 3378 NAPI_POLL_WEIGHT); 3379 3380 /* Setup IRQs */ 3381 err = dpaa2_switch_setup_irqs(sw_dev); 3382 if (err) 3383 goto err_stop; 3384 3385 /* By convention, if the mirror port is equal to the number of switch 3386 * interfaces, then mirroring of any kind is disabled. 3387 */ 3388 ethsw->mirror_port = ethsw->sw_attr.num_ifs; 3389 3390 /* Register the netdev only when the entire setup is done and the 3391 * switch port interfaces are ready to receive traffic 3392 */ 3393 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3394 err = register_netdev(ethsw->ports[i]->netdev); 3395 if (err < 0) { 3396 dev_err(dev, "register_netdev error %d\n", err); 3397 goto err_unregister_ports; 3398 } 3399 } 3400 3401 return 0; 3402 3403 err_unregister_ports: 3404 for (i--; i >= 0; i--) 3405 unregister_netdev(ethsw->ports[i]->netdev); 3406 dpaa2_switch_teardown_irqs(sw_dev); 3407 err_stop: 3408 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3409 err_free_netdev: 3410 for (i--; i >= 0; i--) 3411 dpaa2_switch_remove_port(ethsw, i); 3412 kfree(ethsw->filter_blocks); 3413 err_free_fdbs: 3414 kfree(ethsw->fdbs); 3415 err_free_ports: 3416 kfree(ethsw->ports); 3417 3418 err_teardown: 3419 dpaa2_switch_teardown(sw_dev); 3420 3421 err_free_cmdport: 3422 fsl_mc_portal_free(ethsw->mc_io); 3423 3424 err_free_drvdata: 3425 kfree(ethsw); 3426 dev_set_drvdata(dev, NULL); 3427 3428 return err; 3429 } 3430 3431 static const struct fsl_mc_device_id dpaa2_switch_match_id_table[] = { 3432 { 3433 .vendor = FSL_MC_VENDOR_FREESCALE, 3434 .obj_type = "dpsw", 3435 }, 3436 { .vendor = 0x0 } 3437 }; 3438 MODULE_DEVICE_TABLE(fslmc, dpaa2_switch_match_id_table); 3439 3440 static struct fsl_mc_driver dpaa2_switch_drv = { 3441 .driver = { 3442 .name = KBUILD_MODNAME, 3443 .owner = THIS_MODULE, 3444 }, 3445 .probe = dpaa2_switch_probe, 3446 .remove = dpaa2_switch_remove, 3447 .match_id_table = dpaa2_switch_match_id_table 3448 }; 3449 3450 static struct notifier_block dpaa2_switch_port_nb __read_mostly = { 3451 .notifier_call = dpaa2_switch_port_netdevice_event, 3452 }; 3453 3454 static struct notifier_block dpaa2_switch_port_switchdev_nb = { 3455 .notifier_call = dpaa2_switch_port_event, 3456 }; 3457 3458 static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb = { 3459 .notifier_call = dpaa2_switch_port_blocking_event, 3460 }; 3461 3462 static int dpaa2_switch_register_notifiers(void) 3463 { 3464 int err; 3465 3466 err = register_netdevice_notifier(&dpaa2_switch_port_nb); 3467 if (err) { 3468 pr_err("dpaa2-switch: failed to register net_device notifier (%d)\n", err); 3469 return err; 3470 } 3471 3472 err = register_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3473 if (err) { 3474 pr_err("dpaa2-switch: failed to register switchdev notifier (%d)\n", err); 3475 goto err_switchdev_nb; 3476 } 3477 3478 err = register_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3479 if (err) { 3480 pr_err("dpaa2-switch: failed to register switchdev blocking notifier (%d)\n", err); 3481 goto err_switchdev_blocking_nb; 3482 } 3483 3484 return 0; 3485 3486 err_switchdev_blocking_nb: 3487 unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3488 err_switchdev_nb: 3489 unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3490 3491 return err; 3492 } 3493 3494 static void dpaa2_switch_unregister_notifiers(void) 3495 { 3496 int err; 3497 3498 err = unregister_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3499 if (err) 3500 pr_err("dpaa2-switch: failed to unregister switchdev blocking notifier (%d)\n", 3501 err); 3502 3503 err = unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3504 if (err) 3505 pr_err("dpaa2-switch: failed to unregister switchdev notifier (%d)\n", err); 3506 3507 err = unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3508 if (err) 3509 pr_err("dpaa2-switch: failed to unregister net_device notifier (%d)\n", err); 3510 } 3511 3512 static int __init dpaa2_switch_driver_init(void) 3513 { 3514 int err; 3515 3516 err = fsl_mc_driver_register(&dpaa2_switch_drv); 3517 if (err) 3518 return err; 3519 3520 err = dpaa2_switch_register_notifiers(); 3521 if (err) { 3522 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3523 return err; 3524 } 3525 3526 return 0; 3527 } 3528 3529 static void __exit dpaa2_switch_driver_exit(void) 3530 { 3531 dpaa2_switch_unregister_notifiers(); 3532 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3533 } 3534 3535 module_init(dpaa2_switch_driver_init); 3536 module_exit(dpaa2_switch_driver_exit); 3537 3538 MODULE_LICENSE("GPL v2"); 3539 MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver"); 3540