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/kthread.h> 14 #include <linux/workqueue.h> 15 #include <linux/iommu.h> 16 #include <net/pkt_cls.h> 17 18 #include <linux/fsl/mc.h> 19 20 #include "dpaa2-switch.h" 21 22 /* Minimal supported DPSW version */ 23 #define DPSW_MIN_VER_MAJOR 8 24 #define DPSW_MIN_VER_MINOR 9 25 26 #define DEFAULT_VLAN_ID 1 27 28 static u16 dpaa2_switch_port_get_fdb_id(struct ethsw_port_priv *port_priv) 29 { 30 return port_priv->fdb->fdb_id; 31 } 32 33 static struct dpaa2_switch_fdb *dpaa2_switch_fdb_get_unused(struct ethsw_core *ethsw) 34 { 35 int i; 36 37 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) 38 if (!ethsw->fdbs[i].in_use) 39 return ðsw->fdbs[i]; 40 return NULL; 41 } 42 43 static struct dpaa2_switch_filter_block * 44 dpaa2_switch_filter_block_get_unused(struct ethsw_core *ethsw) 45 { 46 int i; 47 48 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) 49 if (!ethsw->filter_blocks[i].in_use) 50 return ðsw->filter_blocks[i]; 51 return NULL; 52 } 53 54 static u16 dpaa2_switch_port_set_fdb(struct ethsw_port_priv *port_priv, 55 struct net_device *bridge_dev) 56 { 57 struct ethsw_port_priv *other_port_priv = NULL; 58 struct dpaa2_switch_fdb *fdb; 59 struct net_device *other_dev; 60 struct list_head *iter; 61 62 /* If we leave a bridge (bridge_dev is NULL), find an unused 63 * FDB and use that. 64 */ 65 if (!bridge_dev) { 66 fdb = dpaa2_switch_fdb_get_unused(port_priv->ethsw_data); 67 68 /* If there is no unused FDB, we must be the last port that 69 * leaves the last bridge, all the others are standalone. We 70 * can just keep the FDB that we already have. 71 */ 72 73 if (!fdb) { 74 port_priv->fdb->bridge_dev = NULL; 75 return 0; 76 } 77 78 port_priv->fdb = fdb; 79 port_priv->fdb->in_use = true; 80 port_priv->fdb->bridge_dev = NULL; 81 return 0; 82 } 83 84 /* The below call to netdev_for_each_lower_dev() demands the RTNL lock 85 * being held. Assert on it so that it's easier to catch new code 86 * paths that reach this point without the RTNL lock. 87 */ 88 ASSERT_RTNL(); 89 90 /* If part of a bridge, use the FDB of the first dpaa2 switch interface 91 * to be present in that bridge 92 */ 93 netdev_for_each_lower_dev(bridge_dev, other_dev, iter) { 94 if (!dpaa2_switch_port_dev_check(other_dev)) 95 continue; 96 97 if (other_dev == port_priv->netdev) 98 continue; 99 100 other_port_priv = netdev_priv(other_dev); 101 break; 102 } 103 104 /* The current port is about to change its FDB to the one used by the 105 * first port that joined the bridge. 106 */ 107 if (other_port_priv) { 108 /* The previous FDB is about to become unused, since the 109 * interface is no longer standalone. 110 */ 111 port_priv->fdb->in_use = false; 112 port_priv->fdb->bridge_dev = NULL; 113 114 /* Get a reference to the new FDB */ 115 port_priv->fdb = other_port_priv->fdb; 116 } 117 118 /* Keep track of the new upper bridge device */ 119 port_priv->fdb->bridge_dev = bridge_dev; 120 121 return 0; 122 } 123 124 static void dpaa2_switch_fdb_get_flood_cfg(struct ethsw_core *ethsw, u16 fdb_id, 125 enum dpsw_flood_type type, 126 struct dpsw_egress_flood_cfg *cfg) 127 { 128 int i = 0, j; 129 130 memset(cfg, 0, sizeof(*cfg)); 131 132 /* Add all the DPAA2 switch ports found in the same bridging domain to 133 * the egress flooding domain 134 */ 135 for (j = 0; j < ethsw->sw_attr.num_ifs; j++) { 136 if (!ethsw->ports[j]) 137 continue; 138 if (ethsw->ports[j]->fdb->fdb_id != fdb_id) 139 continue; 140 141 if (type == DPSW_BROADCAST && ethsw->ports[j]->bcast_flood) 142 cfg->if_id[i++] = ethsw->ports[j]->idx; 143 else if (type == DPSW_FLOODING && ethsw->ports[j]->ucast_flood) 144 cfg->if_id[i++] = ethsw->ports[j]->idx; 145 } 146 147 /* Add the CTRL interface to the egress flooding domain */ 148 cfg->if_id[i++] = ethsw->sw_attr.num_ifs; 149 150 cfg->fdb_id = fdb_id; 151 cfg->flood_type = type; 152 cfg->num_ifs = i; 153 } 154 155 static int dpaa2_switch_fdb_set_egress_flood(struct ethsw_core *ethsw, u16 fdb_id) 156 { 157 struct dpsw_egress_flood_cfg flood_cfg; 158 int err; 159 160 /* Setup broadcast flooding domain */ 161 dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_BROADCAST, &flood_cfg); 162 err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle, 163 &flood_cfg); 164 if (err) { 165 dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err); 166 return err; 167 } 168 169 /* Setup unknown flooding domain */ 170 dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_FLOODING, &flood_cfg); 171 err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle, 172 &flood_cfg); 173 if (err) { 174 dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err); 175 return err; 176 } 177 178 return 0; 179 } 180 181 static void *dpaa2_iova_to_virt(struct iommu_domain *domain, 182 dma_addr_t iova_addr) 183 { 184 phys_addr_t phys_addr; 185 186 phys_addr = domain ? iommu_iova_to_phys(domain, iova_addr) : iova_addr; 187 188 return phys_to_virt(phys_addr); 189 } 190 191 static int dpaa2_switch_add_vlan(struct ethsw_port_priv *port_priv, u16 vid) 192 { 193 struct ethsw_core *ethsw = port_priv->ethsw_data; 194 struct dpsw_vlan_cfg vcfg = {0}; 195 int err; 196 197 vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 198 err = dpsw_vlan_add(ethsw->mc_io, 0, 199 ethsw->dpsw_handle, vid, &vcfg); 200 if (err) { 201 dev_err(ethsw->dev, "dpsw_vlan_add err %d\n", err); 202 return err; 203 } 204 ethsw->vlans[vid] = ETHSW_VLAN_MEMBER; 205 206 return 0; 207 } 208 209 static bool dpaa2_switch_port_is_up(struct ethsw_port_priv *port_priv) 210 { 211 struct net_device *netdev = port_priv->netdev; 212 struct dpsw_link_state state; 213 int err; 214 215 err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0, 216 port_priv->ethsw_data->dpsw_handle, 217 port_priv->idx, &state); 218 if (err) { 219 netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err); 220 return true; 221 } 222 223 WARN_ONCE(state.up > 1, "Garbage read into link_state"); 224 225 return state.up ? true : false; 226 } 227 228 static int dpaa2_switch_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid) 229 { 230 struct ethsw_core *ethsw = port_priv->ethsw_data; 231 struct net_device *netdev = port_priv->netdev; 232 struct dpsw_tci_cfg tci_cfg = { 0 }; 233 bool up; 234 int err, ret; 235 236 err = dpsw_if_get_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, 237 port_priv->idx, &tci_cfg); 238 if (err) { 239 netdev_err(netdev, "dpsw_if_get_tci err %d\n", err); 240 return err; 241 } 242 243 tci_cfg.vlan_id = pvid; 244 245 /* Interface needs to be down to change PVID */ 246 up = dpaa2_switch_port_is_up(port_priv); 247 if (up) { 248 err = dpsw_if_disable(ethsw->mc_io, 0, 249 ethsw->dpsw_handle, 250 port_priv->idx); 251 if (err) { 252 netdev_err(netdev, "dpsw_if_disable err %d\n", err); 253 return err; 254 } 255 } 256 257 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, 258 port_priv->idx, &tci_cfg); 259 if (err) { 260 netdev_err(netdev, "dpsw_if_set_tci err %d\n", err); 261 goto set_tci_error; 262 } 263 264 /* Delete previous PVID info and mark the new one */ 265 port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID; 266 port_priv->vlans[pvid] |= ETHSW_VLAN_PVID; 267 port_priv->pvid = pvid; 268 269 set_tci_error: 270 if (up) { 271 ret = dpsw_if_enable(ethsw->mc_io, 0, 272 ethsw->dpsw_handle, 273 port_priv->idx); 274 if (ret) { 275 netdev_err(netdev, "dpsw_if_enable err %d\n", ret); 276 return ret; 277 } 278 } 279 280 return err; 281 } 282 283 static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv, 284 u16 vid, u16 flags) 285 { 286 struct ethsw_core *ethsw = port_priv->ethsw_data; 287 struct net_device *netdev = port_priv->netdev; 288 struct dpsw_vlan_if_cfg vcfg = {0}; 289 int err; 290 291 if (port_priv->vlans[vid]) { 292 netdev_err(netdev, "VLAN %d already configured\n", vid); 293 return -EEXIST; 294 } 295 296 /* If hit, this VLAN rule will lead the packet into the FDB table 297 * specified in the vlan configuration below 298 */ 299 vcfg.num_ifs = 1; 300 vcfg.if_id[0] = port_priv->idx; 301 vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 302 vcfg.options |= DPSW_VLAN_ADD_IF_OPT_FDB_ID; 303 err = dpsw_vlan_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, vid, &vcfg); 304 if (err) { 305 netdev_err(netdev, "dpsw_vlan_add_if err %d\n", err); 306 return err; 307 } 308 309 port_priv->vlans[vid] = ETHSW_VLAN_MEMBER; 310 311 if (flags & BRIDGE_VLAN_INFO_UNTAGGED) { 312 err = dpsw_vlan_add_if_untagged(ethsw->mc_io, 0, 313 ethsw->dpsw_handle, 314 vid, &vcfg); 315 if (err) { 316 netdev_err(netdev, 317 "dpsw_vlan_add_if_untagged err %d\n", err); 318 return err; 319 } 320 port_priv->vlans[vid] |= ETHSW_VLAN_UNTAGGED; 321 } 322 323 if (flags & BRIDGE_VLAN_INFO_PVID) { 324 err = dpaa2_switch_port_set_pvid(port_priv, vid); 325 if (err) 326 return err; 327 } 328 329 return 0; 330 } 331 332 static enum dpsw_stp_state br_stp_state_to_dpsw(u8 state) 333 { 334 switch (state) { 335 case BR_STATE_DISABLED: 336 return DPSW_STP_STATE_DISABLED; 337 case BR_STATE_LISTENING: 338 return DPSW_STP_STATE_LISTENING; 339 case BR_STATE_LEARNING: 340 return DPSW_STP_STATE_LEARNING; 341 case BR_STATE_FORWARDING: 342 return DPSW_STP_STATE_FORWARDING; 343 case BR_STATE_BLOCKING: 344 return DPSW_STP_STATE_BLOCKING; 345 default: 346 return DPSW_STP_STATE_DISABLED; 347 } 348 } 349 350 static int dpaa2_switch_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state) 351 { 352 struct dpsw_stp_cfg stp_cfg = {0}; 353 int err; 354 u16 vid; 355 356 if (!netif_running(port_priv->netdev) || state == port_priv->stp_state) 357 return 0; /* Nothing to do */ 358 359 stp_cfg.state = br_stp_state_to_dpsw(state); 360 for (vid = 0; vid <= VLAN_VID_MASK; vid++) { 361 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { 362 stp_cfg.vlan_id = vid; 363 err = dpsw_if_set_stp(port_priv->ethsw_data->mc_io, 0, 364 port_priv->ethsw_data->dpsw_handle, 365 port_priv->idx, &stp_cfg); 366 if (err) { 367 netdev_err(port_priv->netdev, 368 "dpsw_if_set_stp err %d\n", err); 369 return err; 370 } 371 } 372 } 373 374 port_priv->stp_state = state; 375 376 return 0; 377 } 378 379 static int dpaa2_switch_dellink(struct ethsw_core *ethsw, u16 vid) 380 { 381 struct ethsw_port_priv *ppriv_local = NULL; 382 int i, err; 383 384 if (!ethsw->vlans[vid]) 385 return -ENOENT; 386 387 err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, vid); 388 if (err) { 389 dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n", err); 390 return err; 391 } 392 ethsw->vlans[vid] = 0; 393 394 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 395 ppriv_local = ethsw->ports[i]; 396 if (ppriv_local) 397 ppriv_local->vlans[vid] = 0; 398 } 399 400 return 0; 401 } 402 403 static int dpaa2_switch_port_fdb_add_uc(struct ethsw_port_priv *port_priv, 404 const unsigned char *addr) 405 { 406 struct dpsw_fdb_unicast_cfg entry = {0}; 407 u16 fdb_id; 408 int err; 409 410 entry.if_egress = port_priv->idx; 411 entry.type = DPSW_FDB_ENTRY_STATIC; 412 ether_addr_copy(entry.mac_addr, addr); 413 414 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 415 err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0, 416 port_priv->ethsw_data->dpsw_handle, 417 fdb_id, &entry); 418 if (err) 419 netdev_err(port_priv->netdev, 420 "dpsw_fdb_add_unicast err %d\n", err); 421 return err; 422 } 423 424 static int dpaa2_switch_port_fdb_del_uc(struct ethsw_port_priv *port_priv, 425 const unsigned char *addr) 426 { 427 struct dpsw_fdb_unicast_cfg entry = {0}; 428 u16 fdb_id; 429 int err; 430 431 entry.if_egress = port_priv->idx; 432 entry.type = DPSW_FDB_ENTRY_STATIC; 433 ether_addr_copy(entry.mac_addr, addr); 434 435 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 436 err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0, 437 port_priv->ethsw_data->dpsw_handle, 438 fdb_id, &entry); 439 /* Silently discard error for calling multiple times the del command */ 440 if (err && err != -ENXIO) 441 netdev_err(port_priv->netdev, 442 "dpsw_fdb_remove_unicast err %d\n", err); 443 return err; 444 } 445 446 static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv, 447 const unsigned char *addr) 448 { 449 struct dpsw_fdb_multicast_cfg entry = {0}; 450 u16 fdb_id; 451 int err; 452 453 ether_addr_copy(entry.mac_addr, addr); 454 entry.type = DPSW_FDB_ENTRY_STATIC; 455 entry.num_ifs = 1; 456 entry.if_id[0] = port_priv->idx; 457 458 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 459 err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0, 460 port_priv->ethsw_data->dpsw_handle, 461 fdb_id, &entry); 462 /* Silently discard error for calling multiple times the add command */ 463 if (err && err != -ENXIO) 464 netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n", 465 err); 466 return err; 467 } 468 469 static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv, 470 const unsigned char *addr) 471 { 472 struct dpsw_fdb_multicast_cfg entry = {0}; 473 u16 fdb_id; 474 int err; 475 476 ether_addr_copy(entry.mac_addr, addr); 477 entry.type = DPSW_FDB_ENTRY_STATIC; 478 entry.num_ifs = 1; 479 entry.if_id[0] = port_priv->idx; 480 481 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 482 err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0, 483 port_priv->ethsw_data->dpsw_handle, 484 fdb_id, &entry); 485 /* Silently discard error for calling multiple times the del command */ 486 if (err && err != -ENAVAIL) 487 netdev_err(port_priv->netdev, 488 "dpsw_fdb_remove_multicast err %d\n", err); 489 return err; 490 } 491 492 static void dpaa2_switch_port_get_stats(struct net_device *netdev, 493 struct rtnl_link_stats64 *stats) 494 { 495 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 496 u64 tmp; 497 int err; 498 499 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 500 port_priv->ethsw_data->dpsw_handle, 501 port_priv->idx, 502 DPSW_CNT_ING_FRAME, &stats->rx_packets); 503 if (err) 504 goto error; 505 506 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 507 port_priv->ethsw_data->dpsw_handle, 508 port_priv->idx, 509 DPSW_CNT_EGR_FRAME, &stats->tx_packets); 510 if (err) 511 goto error; 512 513 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 514 port_priv->ethsw_data->dpsw_handle, 515 port_priv->idx, 516 DPSW_CNT_ING_BYTE, &stats->rx_bytes); 517 if (err) 518 goto error; 519 520 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 521 port_priv->ethsw_data->dpsw_handle, 522 port_priv->idx, 523 DPSW_CNT_EGR_BYTE, &stats->tx_bytes); 524 if (err) 525 goto error; 526 527 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 528 port_priv->ethsw_data->dpsw_handle, 529 port_priv->idx, 530 DPSW_CNT_ING_FRAME_DISCARD, 531 &stats->rx_dropped); 532 if (err) 533 goto error; 534 535 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 536 port_priv->ethsw_data->dpsw_handle, 537 port_priv->idx, 538 DPSW_CNT_ING_FLTR_FRAME, 539 &tmp); 540 if (err) 541 goto error; 542 stats->rx_dropped += tmp; 543 544 err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0, 545 port_priv->ethsw_data->dpsw_handle, 546 port_priv->idx, 547 DPSW_CNT_EGR_FRAME_DISCARD, 548 &stats->tx_dropped); 549 if (err) 550 goto error; 551 552 return; 553 554 error: 555 netdev_err(netdev, "dpsw_if_get_counter err %d\n", err); 556 } 557 558 static bool dpaa2_switch_port_has_offload_stats(const struct net_device *netdev, 559 int attr_id) 560 { 561 return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT); 562 } 563 564 static int dpaa2_switch_port_get_offload_stats(int attr_id, 565 const struct net_device *netdev, 566 void *sp) 567 { 568 switch (attr_id) { 569 case IFLA_OFFLOAD_XSTATS_CPU_HIT: 570 dpaa2_switch_port_get_stats((struct net_device *)netdev, sp); 571 return 0; 572 } 573 574 return -EINVAL; 575 } 576 577 static int dpaa2_switch_port_change_mtu(struct net_device *netdev, int mtu) 578 { 579 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 580 int err; 581 582 err = dpsw_if_set_max_frame_length(port_priv->ethsw_data->mc_io, 583 0, 584 port_priv->ethsw_data->dpsw_handle, 585 port_priv->idx, 586 (u16)ETHSW_L2_MAX_FRM(mtu)); 587 if (err) { 588 netdev_err(netdev, 589 "dpsw_if_set_max_frame_length() err %d\n", err); 590 return err; 591 } 592 593 WRITE_ONCE(netdev->mtu, mtu); 594 return 0; 595 } 596 597 static int dpaa2_switch_port_link_state_update(struct net_device *netdev) 598 { 599 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 600 struct dpsw_link_state state; 601 int err; 602 603 /* When we manage the MAC/PHY using phylink there is no need 604 * to manually update the netif_carrier. 605 * We can avoid locking because we are called from the "link changed" 606 * IRQ handler, which is the same as the "endpoint changed" IRQ handler 607 * (the writer to port_priv->mac), so we cannot race with it. 608 */ 609 if (dpaa2_mac_is_type_phy(port_priv->mac)) 610 return 0; 611 612 /* Interrupts are received even though no one issued an 'ifconfig up' 613 * on the switch interface. Ignore these link state update interrupts 614 */ 615 if (!netif_running(netdev)) 616 return 0; 617 618 err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0, 619 port_priv->ethsw_data->dpsw_handle, 620 port_priv->idx, &state); 621 if (err) { 622 netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err); 623 return err; 624 } 625 626 WARN_ONCE(state.up > 1, "Garbage read into link_state"); 627 628 if (state.up != port_priv->link_state) { 629 if (state.up) { 630 netif_carrier_on(netdev); 631 netif_tx_start_all_queues(netdev); 632 } else { 633 netif_carrier_off(netdev); 634 netif_tx_stop_all_queues(netdev); 635 } 636 port_priv->link_state = state.up; 637 } 638 639 return 0; 640 } 641 642 /* Manage all NAPI instances for the control interface. 643 * 644 * We only have one RX queue and one Tx Conf queue for all 645 * switch ports. Therefore, we only need to enable the NAPI instance once, the 646 * first time one of the switch ports runs .dev_open(). 647 */ 648 649 static void dpaa2_switch_enable_ctrl_if_napi(struct ethsw_core *ethsw) 650 { 651 int i; 652 653 /* Access to the ethsw->napi_users relies on the RTNL lock */ 654 ASSERT_RTNL(); 655 656 /* a new interface is using the NAPI instance */ 657 ethsw->napi_users++; 658 659 /* if there is already a user of the instance, return */ 660 if (ethsw->napi_users > 1) 661 return; 662 663 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 664 napi_enable(ðsw->fq[i].napi); 665 } 666 667 static void dpaa2_switch_disable_ctrl_if_napi(struct ethsw_core *ethsw) 668 { 669 int i; 670 671 /* Access to the ethsw->napi_users relies on the RTNL lock */ 672 ASSERT_RTNL(); 673 674 /* If we are not the last interface using the NAPI, return */ 675 ethsw->napi_users--; 676 if (ethsw->napi_users) 677 return; 678 679 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 680 napi_disable(ðsw->fq[i].napi); 681 } 682 683 static int dpaa2_switch_port_open(struct net_device *netdev) 684 { 685 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 686 struct ethsw_core *ethsw = port_priv->ethsw_data; 687 int err; 688 689 mutex_lock(&port_priv->mac_lock); 690 691 if (!dpaa2_switch_port_is_type_phy(port_priv)) { 692 /* Explicitly set carrier off, otherwise 693 * netif_carrier_ok() will return true and cause 'ip link show' 694 * to report the LOWER_UP flag, even though the link 695 * notification wasn't even received. 696 */ 697 netif_carrier_off(netdev); 698 } 699 700 err = dpsw_if_enable(port_priv->ethsw_data->mc_io, 0, 701 port_priv->ethsw_data->dpsw_handle, 702 port_priv->idx); 703 if (err) { 704 mutex_unlock(&port_priv->mac_lock); 705 netdev_err(netdev, "dpsw_if_enable err %d\n", err); 706 return err; 707 } 708 709 dpaa2_switch_enable_ctrl_if_napi(ethsw); 710 711 if (dpaa2_switch_port_is_type_phy(port_priv)) 712 dpaa2_mac_start(port_priv->mac); 713 714 mutex_unlock(&port_priv->mac_lock); 715 716 return 0; 717 } 718 719 static int dpaa2_switch_port_stop(struct net_device *netdev) 720 { 721 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 722 struct ethsw_core *ethsw = port_priv->ethsw_data; 723 int err; 724 725 mutex_lock(&port_priv->mac_lock); 726 727 if (dpaa2_switch_port_is_type_phy(port_priv)) { 728 dpaa2_mac_stop(port_priv->mac); 729 } else { 730 netif_tx_stop_all_queues(netdev); 731 netif_carrier_off(netdev); 732 } 733 734 mutex_unlock(&port_priv->mac_lock); 735 736 err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0, 737 port_priv->ethsw_data->dpsw_handle, 738 port_priv->idx); 739 if (err) { 740 netdev_err(netdev, "dpsw_if_disable err %d\n", err); 741 return err; 742 } 743 744 dpaa2_switch_disable_ctrl_if_napi(ethsw); 745 746 return 0; 747 } 748 749 static int dpaa2_switch_port_parent_id(struct net_device *dev, 750 struct netdev_phys_item_id *ppid) 751 { 752 struct ethsw_port_priv *port_priv = netdev_priv(dev); 753 754 ppid->id_len = 1; 755 ppid->id[0] = port_priv->ethsw_data->dev_id; 756 757 return 0; 758 } 759 760 static int dpaa2_switch_port_get_phys_name(struct net_device *netdev, char *name, 761 size_t len) 762 { 763 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 764 int err; 765 766 err = snprintf(name, len, "p%d", port_priv->idx); 767 if (err >= len) 768 return -EINVAL; 769 770 return 0; 771 } 772 773 struct ethsw_dump_ctx { 774 struct net_device *dev; 775 struct sk_buff *skb; 776 struct netlink_callback *cb; 777 int idx; 778 }; 779 780 static int dpaa2_switch_fdb_dump_nl(struct fdb_dump_entry *entry, 781 struct ethsw_dump_ctx *dump) 782 { 783 struct ndo_fdb_dump_context *ctx = (void *)dump->cb->ctx; 784 int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC; 785 u32 portid = NETLINK_CB(dump->cb->skb).portid; 786 u32 seq = dump->cb->nlh->nlmsg_seq; 787 struct nlmsghdr *nlh; 788 struct ndmsg *ndm; 789 790 if (dump->idx < ctx->fdb_idx) 791 goto skip; 792 793 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, 794 sizeof(*ndm), NLM_F_MULTI); 795 if (!nlh) 796 return -EMSGSIZE; 797 798 ndm = nlmsg_data(nlh); 799 ndm->ndm_family = AF_BRIDGE; 800 ndm->ndm_pad1 = 0; 801 ndm->ndm_pad2 = 0; 802 ndm->ndm_flags = NTF_SELF; 803 ndm->ndm_type = 0; 804 ndm->ndm_ifindex = dump->dev->ifindex; 805 ndm->ndm_state = is_dynamic ? NUD_REACHABLE : NUD_NOARP; 806 807 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr)) 808 goto nla_put_failure; 809 810 nlmsg_end(dump->skb, nlh); 811 812 skip: 813 dump->idx++; 814 return 0; 815 816 nla_put_failure: 817 nlmsg_cancel(dump->skb, nlh); 818 return -EMSGSIZE; 819 } 820 821 static int dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry, 822 struct ethsw_port_priv *port_priv) 823 { 824 int idx = port_priv->idx; 825 int valid; 826 827 if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) 828 valid = entry->if_info == port_priv->idx; 829 else 830 valid = entry->if_mask[idx / 8] & BIT(idx % 8); 831 832 return valid; 833 } 834 835 static int dpaa2_switch_fdb_iterate(struct ethsw_port_priv *port_priv, 836 dpaa2_switch_fdb_cb_t cb, void *data) 837 { 838 struct net_device *net_dev = port_priv->netdev; 839 struct ethsw_core *ethsw = port_priv->ethsw_data; 840 struct device *dev = net_dev->dev.parent; 841 struct fdb_dump_entry *fdb_entries; 842 struct fdb_dump_entry fdb_entry; 843 dma_addr_t fdb_dump_iova; 844 u16 num_fdb_entries; 845 u32 fdb_dump_size; 846 int err = 0, i; 847 u8 *dma_mem; 848 u16 fdb_id; 849 850 fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry); 851 dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL); 852 if (!dma_mem) 853 return -ENOMEM; 854 855 fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size, 856 DMA_FROM_DEVICE); 857 if (dma_mapping_error(dev, fdb_dump_iova)) { 858 netdev_err(net_dev, "dma_map_single() failed\n"); 859 err = -ENOMEM; 860 goto err_map; 861 } 862 863 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 864 err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, fdb_id, 865 fdb_dump_iova, fdb_dump_size, &num_fdb_entries); 866 if (err) { 867 netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err); 868 goto err_dump; 869 } 870 871 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE); 872 873 fdb_entries = (struct fdb_dump_entry *)dma_mem; 874 for (i = 0; i < num_fdb_entries; i++) { 875 fdb_entry = fdb_entries[i]; 876 877 err = cb(port_priv, &fdb_entry, data); 878 if (err) 879 goto end; 880 } 881 882 end: 883 kfree(dma_mem); 884 885 return 0; 886 887 err_dump: 888 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE); 889 err_map: 890 kfree(dma_mem); 891 return err; 892 } 893 894 static int dpaa2_switch_fdb_entry_dump(struct ethsw_port_priv *port_priv, 895 struct fdb_dump_entry *fdb_entry, 896 void *data) 897 { 898 if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv)) 899 return 0; 900 901 return dpaa2_switch_fdb_dump_nl(fdb_entry, data); 902 } 903 904 static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 905 struct net_device *net_dev, 906 struct net_device *filter_dev, int *idx) 907 { 908 struct ethsw_port_priv *port_priv = netdev_priv(net_dev); 909 struct ethsw_dump_ctx dump = { 910 .dev = net_dev, 911 .skb = skb, 912 .cb = cb, 913 .idx = *idx, 914 }; 915 int err; 916 917 err = dpaa2_switch_fdb_iterate(port_priv, dpaa2_switch_fdb_entry_dump, &dump); 918 *idx = dump.idx; 919 920 return err; 921 } 922 923 static int dpaa2_switch_fdb_entry_fast_age(struct ethsw_port_priv *port_priv, 924 struct fdb_dump_entry *fdb_entry, 925 void *data __always_unused) 926 { 927 if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv)) 928 return 0; 929 930 if (!(fdb_entry->type & DPSW_FDB_ENTRY_TYPE_DYNAMIC)) 931 return 0; 932 933 if (fdb_entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) 934 dpaa2_switch_port_fdb_del_uc(port_priv, fdb_entry->mac_addr); 935 else 936 dpaa2_switch_port_fdb_del_mc(port_priv, fdb_entry->mac_addr); 937 938 return 0; 939 } 940 941 static void dpaa2_switch_port_fast_age(struct ethsw_port_priv *port_priv) 942 { 943 dpaa2_switch_fdb_iterate(port_priv, 944 dpaa2_switch_fdb_entry_fast_age, NULL); 945 } 946 947 static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto, 948 u16 vid) 949 { 950 struct switchdev_obj_port_vlan vlan = { 951 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 952 .vid = vid, 953 .obj.orig_dev = netdev, 954 /* This API only allows programming tagged, non-PVID VIDs */ 955 .flags = 0, 956 }; 957 958 return dpaa2_switch_port_vlans_add(netdev, &vlan); 959 } 960 961 static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto, 962 u16 vid) 963 { 964 struct switchdev_obj_port_vlan vlan = { 965 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 966 .vid = vid, 967 .obj.orig_dev = netdev, 968 /* This API only allows programming tagged, non-PVID VIDs */ 969 .flags = 0, 970 }; 971 972 return dpaa2_switch_port_vlans_del(netdev, &vlan); 973 } 974 975 static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv) 976 { 977 struct ethsw_core *ethsw = port_priv->ethsw_data; 978 struct net_device *net_dev = port_priv->netdev; 979 struct device *dev = net_dev->dev.parent; 980 u8 mac_addr[ETH_ALEN]; 981 int err; 982 983 if (!(ethsw->features & ETHSW_FEATURE_MAC_ADDR)) 984 return 0; 985 986 /* Get firmware address, if any */ 987 err = dpsw_if_get_port_mac_addr(ethsw->mc_io, 0, ethsw->dpsw_handle, 988 port_priv->idx, mac_addr); 989 if (err) { 990 dev_err(dev, "dpsw_if_get_port_mac_addr() failed\n"); 991 return err; 992 } 993 994 /* First check if firmware has any address configured by bootloader */ 995 if (!is_zero_ether_addr(mac_addr)) { 996 eth_hw_addr_set(net_dev, mac_addr); 997 } else { 998 /* No MAC address configured, fill in net_dev->dev_addr 999 * with a random one 1000 */ 1001 eth_hw_addr_random(net_dev); 1002 dev_dbg_once(dev, "device(s) have all-zero hwaddr, replaced with random\n"); 1003 1004 /* Override NET_ADDR_RANDOM set by eth_hw_addr_random(); for all 1005 * practical purposes, this will be our "permanent" mac address, 1006 * at least until the next reboot. This move will also permit 1007 * register_netdevice() to properly fill up net_dev->perm_addr. 1008 */ 1009 net_dev->addr_assign_type = NET_ADDR_PERM; 1010 } 1011 1012 return 0; 1013 } 1014 1015 static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw, 1016 const struct dpaa2_fd *fd) 1017 { 1018 struct device *dev = ethsw->dev; 1019 unsigned char *buffer_start; 1020 struct sk_buff **skbh, *skb; 1021 dma_addr_t fd_addr; 1022 1023 fd_addr = dpaa2_fd_get_addr(fd); 1024 skbh = dpaa2_iova_to_virt(ethsw->iommu_domain, fd_addr); 1025 1026 skb = *skbh; 1027 buffer_start = (unsigned char *)skbh; 1028 1029 dma_unmap_single(dev, fd_addr, 1030 skb_tail_pointer(skb) - buffer_start, 1031 DMA_TO_DEVICE); 1032 1033 /* Move on with skb release */ 1034 dev_kfree_skb(skb); 1035 } 1036 1037 static int dpaa2_switch_build_single_fd(struct ethsw_core *ethsw, 1038 struct sk_buff *skb, 1039 struct dpaa2_fd *fd) 1040 { 1041 struct device *dev = ethsw->dev; 1042 struct sk_buff **skbh; 1043 dma_addr_t addr; 1044 u8 *buff_start; 1045 void *hwa; 1046 1047 buff_start = PTR_ALIGN(skb->data - DPAA2_SWITCH_TX_DATA_OFFSET - 1048 DPAA2_SWITCH_TX_BUF_ALIGN, 1049 DPAA2_SWITCH_TX_BUF_ALIGN); 1050 1051 /* Clear FAS to have consistent values for TX confirmation. It is 1052 * located in the first 8 bytes of the buffer's hardware annotation 1053 * area 1054 */ 1055 hwa = buff_start + DPAA2_SWITCH_SWA_SIZE; 1056 memset(hwa, 0, 8); 1057 1058 /* Store a backpointer to the skb at the beginning of the buffer 1059 * (in the private data area) such that we can release it 1060 * on Tx confirm 1061 */ 1062 skbh = (struct sk_buff **)buff_start; 1063 *skbh = skb; 1064 1065 addr = dma_map_single(dev, buff_start, 1066 skb_tail_pointer(skb) - buff_start, 1067 DMA_TO_DEVICE); 1068 if (unlikely(dma_mapping_error(dev, addr))) 1069 return -ENOMEM; 1070 1071 /* Setup the FD fields */ 1072 memset(fd, 0, sizeof(*fd)); 1073 1074 dpaa2_fd_set_addr(fd, addr); 1075 dpaa2_fd_set_offset(fd, (u16)(skb->data - buff_start)); 1076 dpaa2_fd_set_len(fd, skb->len); 1077 dpaa2_fd_set_format(fd, dpaa2_fd_single); 1078 1079 return 0; 1080 } 1081 1082 static netdev_tx_t dpaa2_switch_port_tx(struct sk_buff *skb, 1083 struct net_device *net_dev) 1084 { 1085 struct ethsw_port_priv *port_priv = netdev_priv(net_dev); 1086 struct ethsw_core *ethsw = port_priv->ethsw_data; 1087 int retries = DPAA2_SWITCH_SWP_BUSY_RETRIES; 1088 struct dpaa2_fd fd; 1089 int err; 1090 1091 if (unlikely(skb_headroom(skb) < DPAA2_SWITCH_NEEDED_HEADROOM)) { 1092 struct sk_buff *ns; 1093 1094 ns = skb_realloc_headroom(skb, DPAA2_SWITCH_NEEDED_HEADROOM); 1095 if (unlikely(!ns)) { 1096 net_err_ratelimited("%s: Error reallocating skb headroom\n", net_dev->name); 1097 goto err_free_skb; 1098 } 1099 dev_consume_skb_any(skb); 1100 skb = ns; 1101 } 1102 1103 /* We'll be holding a back-reference to the skb until Tx confirmation */ 1104 skb = skb_unshare(skb, GFP_ATOMIC); 1105 if (unlikely(!skb)) { 1106 /* skb_unshare() has already freed the skb */ 1107 net_err_ratelimited("%s: Error copying the socket buffer\n", net_dev->name); 1108 goto err_exit; 1109 } 1110 1111 /* At this stage, we do not support non-linear skbs so just try to 1112 * linearize the skb and if that's not working, just drop the packet. 1113 */ 1114 err = skb_linearize(skb); 1115 if (err) { 1116 net_err_ratelimited("%s: skb_linearize error (%d)!\n", net_dev->name, err); 1117 goto err_free_skb; 1118 } 1119 1120 err = dpaa2_switch_build_single_fd(ethsw, skb, &fd); 1121 if (unlikely(err)) { 1122 net_err_ratelimited("%s: ethsw_build_*_fd() %d\n", net_dev->name, err); 1123 goto err_free_skb; 1124 } 1125 1126 do { 1127 err = dpaa2_io_service_enqueue_qd(NULL, 1128 port_priv->tx_qdid, 1129 8, 0, &fd); 1130 retries--; 1131 } while (err == -EBUSY && retries); 1132 1133 if (unlikely(err < 0)) { 1134 dpaa2_switch_free_fd(ethsw, &fd); 1135 goto err_exit; 1136 } 1137 1138 return NETDEV_TX_OK; 1139 1140 err_free_skb: 1141 dev_kfree_skb(skb); 1142 err_exit: 1143 return NETDEV_TX_OK; 1144 } 1145 1146 static int 1147 dpaa2_switch_setup_tc_cls_flower(struct dpaa2_switch_filter_block *filter_block, 1148 struct flow_cls_offload *f) 1149 { 1150 switch (f->command) { 1151 case FLOW_CLS_REPLACE: 1152 return dpaa2_switch_cls_flower_replace(filter_block, f); 1153 case FLOW_CLS_DESTROY: 1154 return dpaa2_switch_cls_flower_destroy(filter_block, f); 1155 default: 1156 return -EOPNOTSUPP; 1157 } 1158 } 1159 1160 static int 1161 dpaa2_switch_setup_tc_cls_matchall(struct dpaa2_switch_filter_block *block, 1162 struct tc_cls_matchall_offload *f) 1163 { 1164 switch (f->command) { 1165 case TC_CLSMATCHALL_REPLACE: 1166 return dpaa2_switch_cls_matchall_replace(block, f); 1167 case TC_CLSMATCHALL_DESTROY: 1168 return dpaa2_switch_cls_matchall_destroy(block, f); 1169 default: 1170 return -EOPNOTSUPP; 1171 } 1172 } 1173 1174 static int dpaa2_switch_port_setup_tc_block_cb_ig(enum tc_setup_type type, 1175 void *type_data, 1176 void *cb_priv) 1177 { 1178 switch (type) { 1179 case TC_SETUP_CLSFLOWER: 1180 return dpaa2_switch_setup_tc_cls_flower(cb_priv, type_data); 1181 case TC_SETUP_CLSMATCHALL: 1182 return dpaa2_switch_setup_tc_cls_matchall(cb_priv, type_data); 1183 default: 1184 return -EOPNOTSUPP; 1185 } 1186 } 1187 1188 static LIST_HEAD(dpaa2_switch_block_cb_list); 1189 1190 static int 1191 dpaa2_switch_port_acl_tbl_bind(struct ethsw_port_priv *port_priv, 1192 struct dpaa2_switch_filter_block *block) 1193 { 1194 struct ethsw_core *ethsw = port_priv->ethsw_data; 1195 struct net_device *netdev = port_priv->netdev; 1196 struct dpsw_acl_if_cfg acl_if_cfg; 1197 int err; 1198 1199 if (port_priv->filter_block) 1200 return -EINVAL; 1201 1202 acl_if_cfg.if_id[0] = port_priv->idx; 1203 acl_if_cfg.num_ifs = 1; 1204 err = dpsw_acl_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1205 block->acl_id, &acl_if_cfg); 1206 if (err) { 1207 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err); 1208 return err; 1209 } 1210 1211 block->ports |= BIT(port_priv->idx); 1212 port_priv->filter_block = block; 1213 1214 return 0; 1215 } 1216 1217 static int 1218 dpaa2_switch_port_acl_tbl_unbind(struct ethsw_port_priv *port_priv, 1219 struct dpaa2_switch_filter_block *block) 1220 { 1221 struct ethsw_core *ethsw = port_priv->ethsw_data; 1222 struct net_device *netdev = port_priv->netdev; 1223 struct dpsw_acl_if_cfg acl_if_cfg; 1224 int err; 1225 1226 if (port_priv->filter_block != block) 1227 return -EINVAL; 1228 1229 acl_if_cfg.if_id[0] = port_priv->idx; 1230 acl_if_cfg.num_ifs = 1; 1231 err = dpsw_acl_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1232 block->acl_id, &acl_if_cfg); 1233 if (err) { 1234 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err); 1235 return err; 1236 } 1237 1238 block->ports &= ~BIT(port_priv->idx); 1239 port_priv->filter_block = NULL; 1240 return 0; 1241 } 1242 1243 static int dpaa2_switch_port_block_bind(struct ethsw_port_priv *port_priv, 1244 struct dpaa2_switch_filter_block *block) 1245 { 1246 struct dpaa2_switch_filter_block *old_block = port_priv->filter_block; 1247 int err; 1248 1249 /* Offload all the mirror entries found in the block on this new port 1250 * joining it. 1251 */ 1252 err = dpaa2_switch_block_offload_mirror(block, port_priv); 1253 if (err) 1254 return err; 1255 1256 /* If the port is already bound to this ACL table then do nothing. This 1257 * can happen when this port is the first one to join a tc block 1258 */ 1259 if (port_priv->filter_block == block) 1260 return 0; 1261 1262 err = dpaa2_switch_port_acl_tbl_unbind(port_priv, old_block); 1263 if (err) 1264 return err; 1265 1266 /* Mark the previous ACL table as being unused if this was the last 1267 * port that was using it. 1268 */ 1269 if (old_block->ports == 0) 1270 old_block->in_use = false; 1271 1272 return dpaa2_switch_port_acl_tbl_bind(port_priv, block); 1273 } 1274 1275 static int 1276 dpaa2_switch_port_block_unbind(struct ethsw_port_priv *port_priv, 1277 struct dpaa2_switch_filter_block *block) 1278 { 1279 struct ethsw_core *ethsw = port_priv->ethsw_data; 1280 struct dpaa2_switch_filter_block *new_block; 1281 int err; 1282 1283 /* Unoffload all the mirror entries found in the block from the 1284 * port leaving it. 1285 */ 1286 err = dpaa2_switch_block_unoffload_mirror(block, port_priv); 1287 if (err) 1288 return err; 1289 1290 /* We are the last port that leaves a block (an ACL table). 1291 * We'll continue to use this table. 1292 */ 1293 if (block->ports == BIT(port_priv->idx)) 1294 return 0; 1295 1296 err = dpaa2_switch_port_acl_tbl_unbind(port_priv, block); 1297 if (err) 1298 return err; 1299 1300 if (block->ports == 0) 1301 block->in_use = false; 1302 1303 new_block = dpaa2_switch_filter_block_get_unused(ethsw); 1304 new_block->in_use = true; 1305 return dpaa2_switch_port_acl_tbl_bind(port_priv, new_block); 1306 } 1307 1308 static int dpaa2_switch_setup_tc_block_bind(struct net_device *netdev, 1309 struct flow_block_offload *f) 1310 { 1311 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1312 struct ethsw_core *ethsw = port_priv->ethsw_data; 1313 struct dpaa2_switch_filter_block *filter_block; 1314 struct flow_block_cb *block_cb; 1315 bool register_block = false; 1316 int err; 1317 1318 block_cb = flow_block_cb_lookup(f->block, 1319 dpaa2_switch_port_setup_tc_block_cb_ig, 1320 ethsw); 1321 1322 if (!block_cb) { 1323 /* If the filter block is not already known, then this port 1324 * must be the first to join it. In this case, we can just 1325 * continue to use our private table 1326 */ 1327 filter_block = port_priv->filter_block; 1328 1329 block_cb = flow_block_cb_alloc(dpaa2_switch_port_setup_tc_block_cb_ig, 1330 ethsw, filter_block, NULL); 1331 if (IS_ERR(block_cb)) 1332 return PTR_ERR(block_cb); 1333 1334 register_block = true; 1335 } else { 1336 filter_block = flow_block_cb_priv(block_cb); 1337 } 1338 1339 flow_block_cb_incref(block_cb); 1340 err = dpaa2_switch_port_block_bind(port_priv, filter_block); 1341 if (err) 1342 goto err_block_bind; 1343 1344 if (register_block) { 1345 flow_block_cb_add(block_cb, f); 1346 list_add_tail(&block_cb->driver_list, 1347 &dpaa2_switch_block_cb_list); 1348 } 1349 1350 return 0; 1351 1352 err_block_bind: 1353 if (!flow_block_cb_decref(block_cb)) 1354 flow_block_cb_free(block_cb); 1355 return err; 1356 } 1357 1358 static void dpaa2_switch_setup_tc_block_unbind(struct net_device *netdev, 1359 struct flow_block_offload *f) 1360 { 1361 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1362 struct ethsw_core *ethsw = port_priv->ethsw_data; 1363 struct dpaa2_switch_filter_block *filter_block; 1364 struct flow_block_cb *block_cb; 1365 int err; 1366 1367 block_cb = flow_block_cb_lookup(f->block, 1368 dpaa2_switch_port_setup_tc_block_cb_ig, 1369 ethsw); 1370 if (!block_cb) 1371 return; 1372 1373 filter_block = flow_block_cb_priv(block_cb); 1374 err = dpaa2_switch_port_block_unbind(port_priv, filter_block); 1375 if (!err && !flow_block_cb_decref(block_cb)) { 1376 flow_block_cb_remove(block_cb, f); 1377 list_del(&block_cb->driver_list); 1378 } 1379 } 1380 1381 static int dpaa2_switch_setup_tc_block(struct net_device *netdev, 1382 struct flow_block_offload *f) 1383 { 1384 if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) 1385 return -EOPNOTSUPP; 1386 1387 f->driver_block_list = &dpaa2_switch_block_cb_list; 1388 1389 switch (f->command) { 1390 case FLOW_BLOCK_BIND: 1391 return dpaa2_switch_setup_tc_block_bind(netdev, f); 1392 case FLOW_BLOCK_UNBIND: 1393 dpaa2_switch_setup_tc_block_unbind(netdev, f); 1394 return 0; 1395 default: 1396 return -EOPNOTSUPP; 1397 } 1398 } 1399 1400 static int dpaa2_switch_port_setup_tc(struct net_device *netdev, 1401 enum tc_setup_type type, 1402 void *type_data) 1403 { 1404 switch (type) { 1405 case TC_SETUP_BLOCK: { 1406 return dpaa2_switch_setup_tc_block(netdev, type_data); 1407 } 1408 default: 1409 return -EOPNOTSUPP; 1410 } 1411 1412 return 0; 1413 } 1414 1415 static const struct net_device_ops dpaa2_switch_port_ops = { 1416 .ndo_open = dpaa2_switch_port_open, 1417 .ndo_stop = dpaa2_switch_port_stop, 1418 1419 .ndo_set_mac_address = eth_mac_addr, 1420 .ndo_get_stats64 = dpaa2_switch_port_get_stats, 1421 .ndo_change_mtu = dpaa2_switch_port_change_mtu, 1422 .ndo_has_offload_stats = dpaa2_switch_port_has_offload_stats, 1423 .ndo_get_offload_stats = dpaa2_switch_port_get_offload_stats, 1424 .ndo_fdb_dump = dpaa2_switch_port_fdb_dump, 1425 .ndo_vlan_rx_add_vid = dpaa2_switch_port_vlan_add, 1426 .ndo_vlan_rx_kill_vid = dpaa2_switch_port_vlan_kill, 1427 1428 .ndo_start_xmit = dpaa2_switch_port_tx, 1429 .ndo_get_port_parent_id = dpaa2_switch_port_parent_id, 1430 .ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name, 1431 .ndo_setup_tc = dpaa2_switch_port_setup_tc, 1432 }; 1433 1434 bool dpaa2_switch_port_dev_check(const struct net_device *netdev) 1435 { 1436 return netdev->netdev_ops == &dpaa2_switch_port_ops; 1437 } 1438 1439 static int dpaa2_switch_port_connect_mac(struct ethsw_port_priv *port_priv) 1440 { 1441 struct fsl_mc_device *dpsw_port_dev, *dpmac_dev; 1442 struct dpaa2_mac *mac; 1443 int err; 1444 1445 dpsw_port_dev = to_fsl_mc_device(port_priv->netdev->dev.parent); 1446 dpmac_dev = fsl_mc_get_endpoint(dpsw_port_dev, port_priv->idx); 1447 1448 if (PTR_ERR(dpmac_dev) == -EPROBE_DEFER) 1449 return PTR_ERR(dpmac_dev); 1450 1451 if (IS_ERR(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type) 1452 return 0; 1453 1454 mac = kzalloc(sizeof(*mac), GFP_KERNEL); 1455 if (!mac) 1456 return -ENOMEM; 1457 1458 mac->mc_dev = dpmac_dev; 1459 mac->mc_io = port_priv->ethsw_data->mc_io; 1460 mac->net_dev = port_priv->netdev; 1461 1462 err = dpaa2_mac_open(mac); 1463 if (err) 1464 goto err_free_mac; 1465 1466 if (dpaa2_mac_is_type_phy(mac)) { 1467 err = dpaa2_mac_connect(mac); 1468 if (err) { 1469 netdev_err(port_priv->netdev, 1470 "Error connecting to the MAC endpoint %pe\n", 1471 ERR_PTR(err)); 1472 goto err_close_mac; 1473 } 1474 } 1475 1476 mutex_lock(&port_priv->mac_lock); 1477 port_priv->mac = mac; 1478 mutex_unlock(&port_priv->mac_lock); 1479 1480 return 0; 1481 1482 err_close_mac: 1483 dpaa2_mac_close(mac); 1484 err_free_mac: 1485 kfree(mac); 1486 return err; 1487 } 1488 1489 static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv) 1490 { 1491 struct dpaa2_mac *mac; 1492 1493 mutex_lock(&port_priv->mac_lock); 1494 mac = port_priv->mac; 1495 port_priv->mac = NULL; 1496 mutex_unlock(&port_priv->mac_lock); 1497 1498 if (!mac) 1499 return; 1500 1501 if (dpaa2_mac_is_type_phy(mac)) 1502 dpaa2_mac_disconnect(mac); 1503 1504 dpaa2_mac_close(mac); 1505 kfree(mac); 1506 } 1507 1508 static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg) 1509 { 1510 struct device *dev = (struct device *)arg; 1511 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1512 struct ethsw_port_priv *port_priv; 1513 int err, if_id; 1514 bool had_mac; 1515 u32 status; 1516 1517 err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, 1518 DPSW_IRQ_INDEX_IF, &status); 1519 if (err) { 1520 dev_err(dev, "Can't get irq status (err %d)\n", err); 1521 goto out; 1522 } 1523 1524 if_id = (status & 0xFFFF0000) >> 16; 1525 port_priv = ethsw->ports[if_id]; 1526 1527 if (status & DPSW_IRQ_EVENT_LINK_CHANGED) 1528 dpaa2_switch_port_link_state_update(port_priv->netdev); 1529 1530 if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) { 1531 dpaa2_switch_port_set_mac_addr(port_priv); 1532 /* We can avoid locking because the "endpoint changed" IRQ 1533 * handler is the only one who changes priv->mac at runtime, 1534 * so we are not racing with anyone. 1535 */ 1536 had_mac = !!port_priv->mac; 1537 if (had_mac) 1538 dpaa2_switch_port_disconnect_mac(port_priv); 1539 else 1540 dpaa2_switch_port_connect_mac(port_priv); 1541 } 1542 1543 err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, 1544 DPSW_IRQ_INDEX_IF, status); 1545 if (err) 1546 dev_err(dev, "Can't clear irq status (err %d)\n", err); 1547 1548 out: 1549 return IRQ_HANDLED; 1550 } 1551 1552 static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev) 1553 { 1554 u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED | DPSW_IRQ_EVENT_ENDPOINT_CHANGED; 1555 struct device *dev = &sw_dev->dev; 1556 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1557 struct fsl_mc_device_irq *irq; 1558 int err; 1559 1560 err = fsl_mc_allocate_irqs(sw_dev); 1561 if (err) { 1562 dev_err(dev, "MC irqs allocation failed\n"); 1563 return err; 1564 } 1565 1566 if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) { 1567 err = -EINVAL; 1568 goto free_irq; 1569 } 1570 1571 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1572 DPSW_IRQ_INDEX_IF, 0); 1573 if (err) { 1574 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1575 goto free_irq; 1576 } 1577 1578 irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF]; 1579 1580 err = devm_request_threaded_irq(dev, irq->virq, NULL, 1581 dpaa2_switch_irq0_handler_thread, 1582 IRQF_NO_SUSPEND | IRQF_ONESHOT, 1583 dev_name(dev), dev); 1584 if (err) { 1585 dev_err(dev, "devm_request_threaded_irq(): %d\n", err); 1586 goto free_irq; 1587 } 1588 1589 err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle, 1590 DPSW_IRQ_INDEX_IF, mask); 1591 if (err) { 1592 dev_err(dev, "dpsw_set_irq_mask(): %d\n", err); 1593 goto free_devm_irq; 1594 } 1595 1596 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1597 DPSW_IRQ_INDEX_IF, 1); 1598 if (err) { 1599 dev_err(dev, "dpsw_set_irq_enable(): %d\n", err); 1600 goto free_devm_irq; 1601 } 1602 1603 return 0; 1604 1605 free_devm_irq: 1606 devm_free_irq(dev, irq->virq, dev); 1607 free_irq: 1608 fsl_mc_free_irqs(sw_dev); 1609 return err; 1610 } 1611 1612 static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev) 1613 { 1614 struct device *dev = &sw_dev->dev; 1615 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1616 int err; 1617 1618 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1619 DPSW_IRQ_INDEX_IF, 0); 1620 if (err) 1621 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1622 1623 fsl_mc_free_irqs(sw_dev); 1624 } 1625 1626 static int dpaa2_switch_port_set_learning(struct ethsw_port_priv *port_priv, bool enable) 1627 { 1628 struct ethsw_core *ethsw = port_priv->ethsw_data; 1629 enum dpsw_learning_mode learn_mode; 1630 int err; 1631 1632 if (enable) 1633 learn_mode = DPSW_LEARNING_MODE_HW; 1634 else 1635 learn_mode = DPSW_LEARNING_MODE_DIS; 1636 1637 err = dpsw_if_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 1638 port_priv->idx, learn_mode); 1639 if (err) 1640 netdev_err(port_priv->netdev, "dpsw_if_set_learning_mode err %d\n", err); 1641 1642 if (!enable) 1643 dpaa2_switch_port_fast_age(port_priv); 1644 1645 return err; 1646 } 1647 1648 static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev, 1649 u8 state) 1650 { 1651 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1652 int err; 1653 1654 err = dpaa2_switch_port_set_stp_state(port_priv, state); 1655 if (err) 1656 return err; 1657 1658 switch (state) { 1659 case BR_STATE_DISABLED: 1660 case BR_STATE_BLOCKING: 1661 case BR_STATE_LISTENING: 1662 err = dpaa2_switch_port_set_learning(port_priv, false); 1663 break; 1664 case BR_STATE_LEARNING: 1665 case BR_STATE_FORWARDING: 1666 err = dpaa2_switch_port_set_learning(port_priv, 1667 port_priv->learn_ena); 1668 break; 1669 } 1670 1671 return err; 1672 } 1673 1674 static int dpaa2_switch_port_flood(struct ethsw_port_priv *port_priv, 1675 struct switchdev_brport_flags flags) 1676 { 1677 struct ethsw_core *ethsw = port_priv->ethsw_data; 1678 1679 if (flags.mask & BR_BCAST_FLOOD) 1680 port_priv->bcast_flood = !!(flags.val & BR_BCAST_FLOOD); 1681 1682 if (flags.mask & BR_FLOOD) 1683 port_priv->ucast_flood = !!(flags.val & BR_FLOOD); 1684 1685 return dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 1686 } 1687 1688 static int dpaa2_switch_port_pre_bridge_flags(struct net_device *netdev, 1689 struct switchdev_brport_flags flags, 1690 struct netlink_ext_ack *extack) 1691 { 1692 if (flags.mask & ~(BR_LEARNING | BR_BCAST_FLOOD | BR_FLOOD | 1693 BR_MCAST_FLOOD)) 1694 return -EINVAL; 1695 1696 if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD)) { 1697 bool multicast = !!(flags.val & BR_MCAST_FLOOD); 1698 bool unicast = !!(flags.val & BR_FLOOD); 1699 1700 if (unicast != multicast) { 1701 NL_SET_ERR_MSG_MOD(extack, 1702 "Cannot configure multicast flooding independently of unicast"); 1703 return -EINVAL; 1704 } 1705 } 1706 1707 return 0; 1708 } 1709 1710 static int dpaa2_switch_port_bridge_flags(struct net_device *netdev, 1711 struct switchdev_brport_flags flags, 1712 struct netlink_ext_ack *extack) 1713 { 1714 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1715 int err; 1716 1717 if (flags.mask & BR_LEARNING) { 1718 bool learn_ena = !!(flags.val & BR_LEARNING); 1719 1720 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 1721 if (err) 1722 return err; 1723 port_priv->learn_ena = learn_ena; 1724 } 1725 1726 if (flags.mask & (BR_BCAST_FLOOD | BR_FLOOD | BR_MCAST_FLOOD)) { 1727 err = dpaa2_switch_port_flood(port_priv, flags); 1728 if (err) 1729 return err; 1730 } 1731 1732 return 0; 1733 } 1734 1735 static int dpaa2_switch_port_attr_set(struct net_device *netdev, const void *ctx, 1736 const struct switchdev_attr *attr, 1737 struct netlink_ext_ack *extack) 1738 { 1739 int err = 0; 1740 1741 switch (attr->id) { 1742 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 1743 err = dpaa2_switch_port_attr_stp_state_set(netdev, 1744 attr->u.stp_state); 1745 break; 1746 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 1747 if (!attr->u.vlan_filtering) { 1748 NL_SET_ERR_MSG_MOD(extack, 1749 "The DPAA2 switch does not support VLAN-unaware operation"); 1750 return -EOPNOTSUPP; 1751 } 1752 break; 1753 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: 1754 err = dpaa2_switch_port_pre_bridge_flags(netdev, attr->u.brport_flags, extack); 1755 break; 1756 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 1757 err = dpaa2_switch_port_bridge_flags(netdev, attr->u.brport_flags, extack); 1758 break; 1759 default: 1760 err = -EOPNOTSUPP; 1761 break; 1762 } 1763 1764 return err; 1765 } 1766 1767 int dpaa2_switch_port_vlans_add(struct net_device *netdev, 1768 const struct switchdev_obj_port_vlan *vlan) 1769 { 1770 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1771 struct ethsw_core *ethsw = port_priv->ethsw_data; 1772 struct dpsw_attr *attr = ðsw->sw_attr; 1773 int err = 0; 1774 1775 /* Make sure that the VLAN is not already configured 1776 * on the switch port 1777 */ 1778 if (port_priv->vlans[vlan->vid] & ETHSW_VLAN_MEMBER) { 1779 netdev_err(netdev, "VLAN %d already configured\n", vlan->vid); 1780 return -EEXIST; 1781 } 1782 1783 /* Check if there is space for a new VLAN */ 1784 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1785 ðsw->sw_attr); 1786 if (err) { 1787 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1788 return err; 1789 } 1790 if (attr->max_vlans - attr->num_vlans < 1) 1791 return -ENOSPC; 1792 1793 /* Check if there is space for a new VLAN */ 1794 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1795 ðsw->sw_attr); 1796 if (err) { 1797 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1798 return err; 1799 } 1800 if (attr->max_vlans - attr->num_vlans < 1) 1801 return -ENOSPC; 1802 1803 if (!port_priv->ethsw_data->vlans[vlan->vid]) { 1804 /* this is a new VLAN */ 1805 err = dpaa2_switch_add_vlan(port_priv, vlan->vid); 1806 if (err) 1807 return err; 1808 1809 port_priv->ethsw_data->vlans[vlan->vid] |= ETHSW_VLAN_GLOBAL; 1810 } 1811 1812 return dpaa2_switch_port_add_vlan(port_priv, vlan->vid, vlan->flags); 1813 } 1814 1815 static int dpaa2_switch_port_lookup_address(struct net_device *netdev, int is_uc, 1816 const unsigned char *addr) 1817 { 1818 struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc; 1819 struct netdev_hw_addr *ha; 1820 1821 netif_addr_lock_bh(netdev); 1822 list_for_each_entry(ha, &list->list, list) { 1823 if (ether_addr_equal(ha->addr, addr)) { 1824 netif_addr_unlock_bh(netdev); 1825 return 1; 1826 } 1827 } 1828 netif_addr_unlock_bh(netdev); 1829 return 0; 1830 } 1831 1832 static int dpaa2_switch_port_mdb_add(struct net_device *netdev, 1833 const struct switchdev_obj_port_mdb *mdb) 1834 { 1835 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1836 int err; 1837 1838 /* Check if address is already set on this port */ 1839 if (dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1840 return -EEXIST; 1841 1842 err = dpaa2_switch_port_fdb_add_mc(port_priv, mdb->addr); 1843 if (err) 1844 return err; 1845 1846 err = dev_mc_add(netdev, mdb->addr); 1847 if (err) { 1848 netdev_err(netdev, "dev_mc_add err %d\n", err); 1849 dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1850 } 1851 1852 return err; 1853 } 1854 1855 static int dpaa2_switch_port_obj_add(struct net_device *netdev, 1856 const struct switchdev_obj *obj) 1857 { 1858 int err; 1859 1860 switch (obj->id) { 1861 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1862 err = dpaa2_switch_port_vlans_add(netdev, 1863 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1864 break; 1865 case SWITCHDEV_OBJ_ID_PORT_MDB: 1866 err = dpaa2_switch_port_mdb_add(netdev, 1867 SWITCHDEV_OBJ_PORT_MDB(obj)); 1868 break; 1869 default: 1870 err = -EOPNOTSUPP; 1871 break; 1872 } 1873 1874 return err; 1875 } 1876 1877 static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid) 1878 { 1879 struct ethsw_core *ethsw = port_priv->ethsw_data; 1880 struct net_device *netdev = port_priv->netdev; 1881 struct dpsw_vlan_if_cfg vcfg; 1882 int i, err; 1883 1884 if (!port_priv->vlans[vid]) 1885 return -ENOENT; 1886 1887 if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) { 1888 /* If we are deleting the PVID of a port, use VLAN 4095 instead 1889 * as we are sure that neither the bridge nor the 8021q module 1890 * will use it 1891 */ 1892 err = dpaa2_switch_port_set_pvid(port_priv, 4095); 1893 if (err) 1894 return err; 1895 } 1896 1897 vcfg.num_ifs = 1; 1898 vcfg.if_id[0] = port_priv->idx; 1899 if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) { 1900 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, 1901 ethsw->dpsw_handle, 1902 vid, &vcfg); 1903 if (err) { 1904 netdev_err(netdev, 1905 "dpsw_vlan_remove_if_untagged err %d\n", 1906 err); 1907 } 1908 port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED; 1909 } 1910 1911 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { 1912 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1913 vid, &vcfg); 1914 if (err) { 1915 netdev_err(netdev, 1916 "dpsw_vlan_remove_if err %d\n", err); 1917 return err; 1918 } 1919 port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER; 1920 1921 /* Delete VLAN from switch if it is no longer configured on 1922 * any port 1923 */ 1924 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 1925 if (ethsw->ports[i] && 1926 ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER) 1927 return 0; /* Found a port member in VID */ 1928 } 1929 1930 ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL; 1931 1932 err = dpaa2_switch_dellink(ethsw, vid); 1933 if (err) 1934 return err; 1935 } 1936 1937 return 0; 1938 } 1939 1940 int dpaa2_switch_port_vlans_del(struct net_device *netdev, 1941 const struct switchdev_obj_port_vlan *vlan) 1942 { 1943 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1944 1945 if (netif_is_bridge_master(vlan->obj.orig_dev)) 1946 return -EOPNOTSUPP; 1947 1948 return dpaa2_switch_port_del_vlan(port_priv, vlan->vid); 1949 } 1950 1951 static int dpaa2_switch_port_mdb_del(struct net_device *netdev, 1952 const struct switchdev_obj_port_mdb *mdb) 1953 { 1954 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1955 int err; 1956 1957 if (!dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1958 return -ENOENT; 1959 1960 err = dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1961 if (err) 1962 return err; 1963 1964 err = dev_mc_del(netdev, mdb->addr); 1965 if (err) { 1966 netdev_err(netdev, "dev_mc_del err %d\n", err); 1967 return err; 1968 } 1969 1970 return err; 1971 } 1972 1973 static int dpaa2_switch_port_obj_del(struct net_device *netdev, 1974 const struct switchdev_obj *obj) 1975 { 1976 int err; 1977 1978 switch (obj->id) { 1979 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1980 err = dpaa2_switch_port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj)); 1981 break; 1982 case SWITCHDEV_OBJ_ID_PORT_MDB: 1983 err = dpaa2_switch_port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj)); 1984 break; 1985 default: 1986 err = -EOPNOTSUPP; 1987 break; 1988 } 1989 return err; 1990 } 1991 1992 static int dpaa2_switch_port_attr_set_event(struct net_device *netdev, 1993 struct switchdev_notifier_port_attr_info *ptr) 1994 { 1995 int err; 1996 1997 err = switchdev_handle_port_attr_set(netdev, ptr, 1998 dpaa2_switch_port_dev_check, 1999 dpaa2_switch_port_attr_set); 2000 return notifier_from_errno(err); 2001 } 2002 2003 static int dpaa2_switch_port_bridge_join(struct net_device *netdev, 2004 struct net_device *upper_dev, 2005 struct netlink_ext_ack *extack) 2006 { 2007 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2008 struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; 2009 struct ethsw_core *ethsw = port_priv->ethsw_data; 2010 bool learn_ena; 2011 int err; 2012 2013 /* Delete the previously manually installed VLAN 1 */ 2014 err = dpaa2_switch_port_del_vlan(port_priv, 1); 2015 if (err) 2016 return err; 2017 2018 dpaa2_switch_port_set_fdb(port_priv, upper_dev); 2019 2020 /* Inherit the initial bridge port learning state */ 2021 learn_ena = br_port_flag_is_set(netdev, BR_LEARNING); 2022 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 2023 port_priv->learn_ena = learn_ena; 2024 2025 /* Setup the egress flood policy (broadcast, unknown unicast) */ 2026 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2027 if (err) 2028 goto err_egress_flood; 2029 2030 /* Recreate the egress flood domain of the FDB that we just left. */ 2031 err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id); 2032 if (err) 2033 goto err_egress_flood; 2034 2035 err = switchdev_bridge_port_offload(netdev, netdev, NULL, 2036 NULL, NULL, false, extack); 2037 if (err) 2038 goto err_switchdev_offload; 2039 2040 return 0; 2041 2042 err_switchdev_offload: 2043 err_egress_flood: 2044 dpaa2_switch_port_set_fdb(port_priv, NULL); 2045 return err; 2046 } 2047 2048 static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg) 2049 { 2050 __be16 vlan_proto = htons(ETH_P_8021Q); 2051 2052 if (vdev) 2053 vlan_proto = vlan_dev_vlan_proto(vdev); 2054 2055 return dpaa2_switch_port_vlan_kill(arg, vlan_proto, vid); 2056 } 2057 2058 static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg) 2059 { 2060 __be16 vlan_proto = htons(ETH_P_8021Q); 2061 2062 if (vdev) 2063 vlan_proto = vlan_dev_vlan_proto(vdev); 2064 2065 return dpaa2_switch_port_vlan_add(arg, vlan_proto, vid); 2066 } 2067 2068 static void dpaa2_switch_port_pre_bridge_leave(struct net_device *netdev) 2069 { 2070 switchdev_bridge_port_unoffload(netdev, NULL, NULL, NULL); 2071 } 2072 2073 static int dpaa2_switch_port_bridge_leave(struct net_device *netdev) 2074 { 2075 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2076 struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; 2077 struct ethsw_core *ethsw = port_priv->ethsw_data; 2078 int err; 2079 2080 /* First of all, fast age any learn FDB addresses on this switch port */ 2081 dpaa2_switch_port_fast_age(port_priv); 2082 2083 /* Clear all RX VLANs installed through vlan_vid_add() either as VLAN 2084 * upper devices or otherwise from the FDB table that we are about to 2085 * leave 2086 */ 2087 err = vlan_for_each(netdev, dpaa2_switch_port_clear_rxvlan, netdev); 2088 if (err) 2089 netdev_err(netdev, "Unable to clear RX VLANs from old FDB table, err (%d)\n", err); 2090 2091 dpaa2_switch_port_set_fdb(port_priv, NULL); 2092 2093 /* Restore all RX VLANs into the new FDB table that we just joined */ 2094 err = vlan_for_each(netdev, dpaa2_switch_port_restore_rxvlan, netdev); 2095 if (err) 2096 netdev_err(netdev, "Unable to restore RX VLANs to the new FDB, err (%d)\n", err); 2097 2098 /* Reset the flooding state to denote that this port can send any 2099 * packet in standalone mode. With this, we are also ensuring that any 2100 * later bridge join will have the flooding flag on. 2101 */ 2102 port_priv->bcast_flood = true; 2103 port_priv->ucast_flood = true; 2104 2105 /* Setup the egress flood policy (broadcast, unknown unicast). 2106 * When the port is not under a bridge, only the CTRL interface is part 2107 * of the flooding domain besides the actual port 2108 */ 2109 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2110 if (err) 2111 return err; 2112 2113 /* Recreate the egress flood domain of the FDB that we just left */ 2114 err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id); 2115 if (err) 2116 return err; 2117 2118 /* No HW learning when not under a bridge */ 2119 err = dpaa2_switch_port_set_learning(port_priv, false); 2120 if (err) 2121 return err; 2122 port_priv->learn_ena = false; 2123 2124 /* Add the VLAN 1 as PVID when not under a bridge. We need this since 2125 * the dpaa2 switch interfaces are not capable to be VLAN unaware 2126 */ 2127 return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID, 2128 BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID); 2129 } 2130 2131 static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev) 2132 { 2133 struct net_device *upper_dev; 2134 struct list_head *iter; 2135 2136 /* RCU read lock not necessary because we have write-side protection 2137 * (rtnl_mutex), however a non-rcu iterator does not exist. 2138 */ 2139 netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter) 2140 if (is_vlan_dev(upper_dev)) 2141 return -EOPNOTSUPP; 2142 2143 return 0; 2144 } 2145 2146 static int 2147 dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev, 2148 struct net_device *upper_dev, 2149 struct netlink_ext_ack *extack) 2150 { 2151 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2152 struct ethsw_port_priv *other_port_priv; 2153 struct net_device *other_dev; 2154 struct list_head *iter; 2155 int err; 2156 2157 if (!br_vlan_enabled(upper_dev)) { 2158 NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge"); 2159 return -EOPNOTSUPP; 2160 } 2161 2162 err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev); 2163 if (err) { 2164 NL_SET_ERR_MSG_MOD(extack, 2165 "Cannot join a bridge while VLAN uppers are present"); 2166 return 0; 2167 } 2168 2169 netdev_for_each_lower_dev(upper_dev, other_dev, iter) { 2170 if (!dpaa2_switch_port_dev_check(other_dev)) 2171 continue; 2172 2173 other_port_priv = netdev_priv(other_dev); 2174 if (other_port_priv->ethsw_data != port_priv->ethsw_data) { 2175 NL_SET_ERR_MSG_MOD(extack, 2176 "Interface from a different DPSW is in the bridge already"); 2177 return -EINVAL; 2178 } 2179 } 2180 2181 return 0; 2182 } 2183 2184 static int dpaa2_switch_port_prechangeupper(struct net_device *netdev, 2185 struct netdev_notifier_changeupper_info *info) 2186 { 2187 struct netlink_ext_ack *extack; 2188 struct net_device *upper_dev; 2189 int err; 2190 2191 if (!dpaa2_switch_port_dev_check(netdev)) 2192 return 0; 2193 2194 extack = netdev_notifier_info_to_extack(&info->info); 2195 upper_dev = info->upper_dev; 2196 if (netif_is_bridge_master(upper_dev)) { 2197 err = dpaa2_switch_prechangeupper_sanity_checks(netdev, 2198 upper_dev, 2199 extack); 2200 if (err) 2201 return err; 2202 2203 if (!info->linking) 2204 dpaa2_switch_port_pre_bridge_leave(netdev); 2205 } 2206 2207 return 0; 2208 } 2209 2210 static int dpaa2_switch_port_changeupper(struct net_device *netdev, 2211 struct netdev_notifier_changeupper_info *info) 2212 { 2213 struct netlink_ext_ack *extack; 2214 struct net_device *upper_dev; 2215 2216 if (!dpaa2_switch_port_dev_check(netdev)) 2217 return 0; 2218 2219 extack = netdev_notifier_info_to_extack(&info->info); 2220 2221 upper_dev = info->upper_dev; 2222 if (netif_is_bridge_master(upper_dev)) { 2223 if (info->linking) 2224 return dpaa2_switch_port_bridge_join(netdev, 2225 upper_dev, 2226 extack); 2227 else 2228 return dpaa2_switch_port_bridge_leave(netdev); 2229 } 2230 2231 return 0; 2232 } 2233 2234 static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, 2235 unsigned long event, void *ptr) 2236 { 2237 struct net_device *netdev = netdev_notifier_info_to_dev(ptr); 2238 int err = 0; 2239 2240 switch (event) { 2241 case NETDEV_PRECHANGEUPPER: 2242 err = dpaa2_switch_port_prechangeupper(netdev, ptr); 2243 if (err) 2244 return notifier_from_errno(err); 2245 2246 break; 2247 case NETDEV_CHANGEUPPER: 2248 err = dpaa2_switch_port_changeupper(netdev, ptr); 2249 if (err) 2250 return notifier_from_errno(err); 2251 2252 break; 2253 } 2254 2255 return NOTIFY_DONE; 2256 } 2257 2258 struct ethsw_switchdev_event_work { 2259 struct work_struct work; 2260 struct switchdev_notifier_fdb_info fdb_info; 2261 struct net_device *dev; 2262 unsigned long event; 2263 }; 2264 2265 static void dpaa2_switch_event_work(struct work_struct *work) 2266 { 2267 struct ethsw_switchdev_event_work *switchdev_work = 2268 container_of(work, struct ethsw_switchdev_event_work, work); 2269 struct net_device *dev = switchdev_work->dev; 2270 struct switchdev_notifier_fdb_info *fdb_info; 2271 int err; 2272 2273 rtnl_lock(); 2274 fdb_info = &switchdev_work->fdb_info; 2275 2276 switch (switchdev_work->event) { 2277 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2278 if (!fdb_info->added_by_user || fdb_info->is_local) 2279 break; 2280 if (is_unicast_ether_addr(fdb_info->addr)) 2281 err = dpaa2_switch_port_fdb_add_uc(netdev_priv(dev), 2282 fdb_info->addr); 2283 else 2284 err = dpaa2_switch_port_fdb_add_mc(netdev_priv(dev), 2285 fdb_info->addr); 2286 if (err) 2287 break; 2288 fdb_info->offloaded = true; 2289 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, 2290 &fdb_info->info, NULL); 2291 break; 2292 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2293 if (!fdb_info->added_by_user || fdb_info->is_local) 2294 break; 2295 if (is_unicast_ether_addr(fdb_info->addr)) 2296 dpaa2_switch_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr); 2297 else 2298 dpaa2_switch_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr); 2299 break; 2300 } 2301 2302 rtnl_unlock(); 2303 kfree(switchdev_work->fdb_info.addr); 2304 kfree(switchdev_work); 2305 dev_put(dev); 2306 } 2307 2308 /* Called under rcu_read_lock() */ 2309 static int dpaa2_switch_port_event(struct notifier_block *nb, 2310 unsigned long event, void *ptr) 2311 { 2312 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2313 struct ethsw_port_priv *port_priv = netdev_priv(dev); 2314 struct ethsw_switchdev_event_work *switchdev_work; 2315 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2316 struct ethsw_core *ethsw = port_priv->ethsw_data; 2317 2318 if (event == SWITCHDEV_PORT_ATTR_SET) 2319 return dpaa2_switch_port_attr_set_event(dev, ptr); 2320 2321 if (!dpaa2_switch_port_dev_check(dev)) 2322 return NOTIFY_DONE; 2323 2324 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2325 if (!switchdev_work) 2326 return NOTIFY_BAD; 2327 2328 INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work); 2329 switchdev_work->dev = dev; 2330 switchdev_work->event = event; 2331 2332 switch (event) { 2333 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2334 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2335 memcpy(&switchdev_work->fdb_info, ptr, 2336 sizeof(switchdev_work->fdb_info)); 2337 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2338 if (!switchdev_work->fdb_info.addr) 2339 goto err_addr_alloc; 2340 2341 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2342 fdb_info->addr); 2343 2344 /* Take a reference on the device to avoid being freed. */ 2345 dev_hold(dev); 2346 break; 2347 default: 2348 kfree(switchdev_work); 2349 return NOTIFY_DONE; 2350 } 2351 2352 queue_work(ethsw->workqueue, &switchdev_work->work); 2353 2354 return NOTIFY_DONE; 2355 2356 err_addr_alloc: 2357 kfree(switchdev_work); 2358 return NOTIFY_BAD; 2359 } 2360 2361 static int dpaa2_switch_port_obj_event(unsigned long event, 2362 struct net_device *netdev, 2363 struct switchdev_notifier_port_obj_info *port_obj_info) 2364 { 2365 int err = -EOPNOTSUPP; 2366 2367 if (!dpaa2_switch_port_dev_check(netdev)) 2368 return NOTIFY_DONE; 2369 2370 switch (event) { 2371 case SWITCHDEV_PORT_OBJ_ADD: 2372 err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj); 2373 break; 2374 case SWITCHDEV_PORT_OBJ_DEL: 2375 err = dpaa2_switch_port_obj_del(netdev, port_obj_info->obj); 2376 break; 2377 } 2378 2379 port_obj_info->handled = true; 2380 return notifier_from_errno(err); 2381 } 2382 2383 static int dpaa2_switch_port_blocking_event(struct notifier_block *nb, 2384 unsigned long event, void *ptr) 2385 { 2386 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2387 2388 switch (event) { 2389 case SWITCHDEV_PORT_OBJ_ADD: 2390 case SWITCHDEV_PORT_OBJ_DEL: 2391 return dpaa2_switch_port_obj_event(event, dev, ptr); 2392 case SWITCHDEV_PORT_ATTR_SET: 2393 return dpaa2_switch_port_attr_set_event(dev, ptr); 2394 } 2395 2396 return NOTIFY_DONE; 2397 } 2398 2399 /* Build a linear skb based on a single-buffer frame descriptor */ 2400 static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw, 2401 const struct dpaa2_fd *fd) 2402 { 2403 u16 fd_offset = dpaa2_fd_get_offset(fd); 2404 dma_addr_t addr = dpaa2_fd_get_addr(fd); 2405 u32 fd_length = dpaa2_fd_get_len(fd); 2406 struct device *dev = ethsw->dev; 2407 struct sk_buff *skb = NULL; 2408 void *fd_vaddr; 2409 2410 fd_vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, addr); 2411 dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE, 2412 DMA_FROM_DEVICE); 2413 2414 skb = build_skb(fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE + 2415 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); 2416 if (unlikely(!skb)) { 2417 dev_err(dev, "build_skb() failed\n"); 2418 return NULL; 2419 } 2420 2421 skb_reserve(skb, fd_offset); 2422 skb_put(skb, fd_length); 2423 2424 ethsw->buf_count--; 2425 2426 return skb; 2427 } 2428 2429 static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq, 2430 const struct dpaa2_fd *fd) 2431 { 2432 dpaa2_switch_free_fd(fq->ethsw, fd); 2433 } 2434 2435 static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq, 2436 const struct dpaa2_fd *fd) 2437 { 2438 struct ethsw_core *ethsw = fq->ethsw; 2439 struct ethsw_port_priv *port_priv; 2440 struct net_device *netdev; 2441 struct vlan_ethhdr *hdr; 2442 struct sk_buff *skb; 2443 u16 vlan_tci, vid; 2444 int if_id, err; 2445 2446 /* get switch ingress interface ID */ 2447 if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF; 2448 2449 if (if_id >= ethsw->sw_attr.num_ifs) { 2450 dev_err(ethsw->dev, "Frame received from unknown interface!\n"); 2451 goto err_free_fd; 2452 } 2453 port_priv = ethsw->ports[if_id]; 2454 netdev = port_priv->netdev; 2455 2456 /* build the SKB based on the FD received */ 2457 if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) { 2458 if (net_ratelimit()) { 2459 netdev_err(netdev, "Received invalid frame format\n"); 2460 goto err_free_fd; 2461 } 2462 } 2463 2464 skb = dpaa2_switch_build_linear_skb(ethsw, fd); 2465 if (unlikely(!skb)) 2466 goto err_free_fd; 2467 2468 skb_reset_mac_header(skb); 2469 2470 /* Remove the VLAN header if the packet that we just received has a vid 2471 * equal to the port PVIDs. Since the dpaa2-switch can operate only in 2472 * VLAN-aware mode and no alterations are made on the packet when it's 2473 * redirected/mirrored to the control interface, we are sure that there 2474 * will always be a VLAN header present. 2475 */ 2476 hdr = vlan_eth_hdr(skb); 2477 vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK; 2478 if (vid == port_priv->pvid) { 2479 err = __skb_vlan_pop(skb, &vlan_tci); 2480 if (err) { 2481 dev_info(ethsw->dev, "__skb_vlan_pop() returned %d", err); 2482 goto err_free_fd; 2483 } 2484 } 2485 2486 skb->dev = netdev; 2487 skb->protocol = eth_type_trans(skb, skb->dev); 2488 2489 /* Setup the offload_fwd_mark only if the port is under a bridge */ 2490 skb->offload_fwd_mark = !!(port_priv->fdb->bridge_dev); 2491 2492 netif_receive_skb(skb); 2493 2494 return; 2495 2496 err_free_fd: 2497 dpaa2_switch_free_fd(ethsw, fd); 2498 } 2499 2500 static void dpaa2_switch_detect_features(struct ethsw_core *ethsw) 2501 { 2502 ethsw->features = 0; 2503 2504 if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6)) 2505 ethsw->features |= ETHSW_FEATURE_MAC_ADDR; 2506 } 2507 2508 static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw) 2509 { 2510 struct dpsw_ctrl_if_attr ctrl_if_attr; 2511 struct device *dev = ethsw->dev; 2512 int i = 0; 2513 int err; 2514 2515 err = dpsw_ctrl_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 2516 &ctrl_if_attr); 2517 if (err) { 2518 dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n", err); 2519 return err; 2520 } 2521 2522 ethsw->fq[i].fqid = ctrl_if_attr.rx_fqid; 2523 ethsw->fq[i].ethsw = ethsw; 2524 ethsw->fq[i++].type = DPSW_QUEUE_RX; 2525 2526 ethsw->fq[i].fqid = ctrl_if_attr.tx_err_conf_fqid; 2527 ethsw->fq[i].ethsw = ethsw; 2528 ethsw->fq[i++].type = DPSW_QUEUE_TX_ERR_CONF; 2529 2530 return 0; 2531 } 2532 2533 /* Free buffers acquired from the buffer pool or which were meant to 2534 * be released in the pool 2535 */ 2536 static void dpaa2_switch_free_bufs(struct ethsw_core *ethsw, u64 *buf_array, int count) 2537 { 2538 struct device *dev = ethsw->dev; 2539 void *vaddr; 2540 int i; 2541 2542 for (i = 0; i < count; i++) { 2543 vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, buf_array[i]); 2544 dma_unmap_page(dev, buf_array[i], DPAA2_SWITCH_RX_BUF_SIZE, 2545 DMA_FROM_DEVICE); 2546 free_pages((unsigned long)vaddr, 0); 2547 } 2548 } 2549 2550 /* Perform a single release command to add buffers 2551 * to the specified buffer pool 2552 */ 2553 static int dpaa2_switch_add_bufs(struct ethsw_core *ethsw, u16 bpid) 2554 { 2555 struct device *dev = ethsw->dev; 2556 u64 buf_array[BUFS_PER_CMD]; 2557 struct page *page; 2558 int retries = 0; 2559 dma_addr_t addr; 2560 int err; 2561 int i; 2562 2563 for (i = 0; i < BUFS_PER_CMD; i++) { 2564 /* Allocate one page for each Rx buffer. WRIOP sees 2565 * the entire page except for a tailroom reserved for 2566 * skb shared info 2567 */ 2568 page = dev_alloc_pages(0); 2569 if (!page) { 2570 dev_err(dev, "buffer allocation failed\n"); 2571 goto err_alloc; 2572 } 2573 2574 addr = dma_map_page(dev, page, 0, DPAA2_SWITCH_RX_BUF_SIZE, 2575 DMA_FROM_DEVICE); 2576 if (dma_mapping_error(dev, addr)) { 2577 dev_err(dev, "dma_map_single() failed\n"); 2578 goto err_map; 2579 } 2580 buf_array[i] = addr; 2581 } 2582 2583 release_bufs: 2584 /* In case the portal is busy, retry until successful or 2585 * max retries hit. 2586 */ 2587 while ((err = dpaa2_io_service_release(NULL, bpid, 2588 buf_array, i)) == -EBUSY) { 2589 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) 2590 break; 2591 2592 cpu_relax(); 2593 } 2594 2595 /* If release command failed, clean up and bail out. */ 2596 if (err) { 2597 dpaa2_switch_free_bufs(ethsw, buf_array, i); 2598 return 0; 2599 } 2600 2601 return i; 2602 2603 err_map: 2604 __free_pages(page, 0); 2605 err_alloc: 2606 /* If we managed to allocate at least some buffers, 2607 * release them to hardware 2608 */ 2609 if (i) 2610 goto release_bufs; 2611 2612 return 0; 2613 } 2614 2615 static int dpaa2_switch_refill_bp(struct ethsw_core *ethsw) 2616 { 2617 int *count = ðsw->buf_count; 2618 int new_count; 2619 int err = 0; 2620 2621 if (unlikely(*count < DPAA2_ETHSW_REFILL_THRESH)) { 2622 do { 2623 new_count = dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2624 if (unlikely(!new_count)) { 2625 /* Out of memory; abort for now, we'll 2626 * try later on 2627 */ 2628 break; 2629 } 2630 *count += new_count; 2631 } while (*count < DPAA2_ETHSW_NUM_BUFS); 2632 2633 if (unlikely(*count < DPAA2_ETHSW_NUM_BUFS)) 2634 err = -ENOMEM; 2635 } 2636 2637 return err; 2638 } 2639 2640 static int dpaa2_switch_seed_bp(struct ethsw_core *ethsw) 2641 { 2642 int *count, ret, i; 2643 2644 for (i = 0; i < DPAA2_ETHSW_NUM_BUFS; i += BUFS_PER_CMD) { 2645 ret = dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2646 count = ðsw->buf_count; 2647 *count += ret; 2648 2649 if (unlikely(ret < BUFS_PER_CMD)) 2650 return -ENOMEM; 2651 } 2652 2653 return 0; 2654 } 2655 2656 static void dpaa2_switch_drain_bp(struct ethsw_core *ethsw) 2657 { 2658 u64 buf_array[BUFS_PER_CMD]; 2659 int ret; 2660 2661 do { 2662 ret = dpaa2_io_service_acquire(NULL, ethsw->bpid, 2663 buf_array, BUFS_PER_CMD); 2664 if (ret < 0) { 2665 dev_err(ethsw->dev, 2666 "dpaa2_io_service_acquire() = %d\n", ret); 2667 return; 2668 } 2669 dpaa2_switch_free_bufs(ethsw, buf_array, ret); 2670 2671 } while (ret); 2672 } 2673 2674 static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw) 2675 { 2676 struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 }; 2677 struct device *dev = ethsw->dev; 2678 struct fsl_mc_device *dpbp_dev; 2679 struct dpbp_attr dpbp_attrs; 2680 int err; 2681 2682 err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPBP, 2683 &dpbp_dev); 2684 if (err) { 2685 if (err == -ENXIO) 2686 err = -EPROBE_DEFER; 2687 else 2688 dev_err(dev, "DPBP device allocation failed\n"); 2689 return err; 2690 } 2691 ethsw->dpbp_dev = dpbp_dev; 2692 2693 err = dpbp_open(ethsw->mc_io, 0, dpbp_dev->obj_desc.id, 2694 &dpbp_dev->mc_handle); 2695 if (err) { 2696 dev_err(dev, "dpbp_open() failed\n"); 2697 goto err_open; 2698 } 2699 2700 err = dpbp_reset(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2701 if (err) { 2702 dev_err(dev, "dpbp_reset() failed\n"); 2703 goto err_reset; 2704 } 2705 2706 err = dpbp_enable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2707 if (err) { 2708 dev_err(dev, "dpbp_enable() failed\n"); 2709 goto err_enable; 2710 } 2711 2712 err = dpbp_get_attributes(ethsw->mc_io, 0, dpbp_dev->mc_handle, 2713 &dpbp_attrs); 2714 if (err) { 2715 dev_err(dev, "dpbp_get_attributes() failed\n"); 2716 goto err_get_attr; 2717 } 2718 2719 dpsw_ctrl_if_pools_cfg.num_dpbp = 1; 2720 dpsw_ctrl_if_pools_cfg.pools[0].dpbp_id = dpbp_attrs.id; 2721 dpsw_ctrl_if_pools_cfg.pools[0].buffer_size = DPAA2_SWITCH_RX_BUF_SIZE; 2722 dpsw_ctrl_if_pools_cfg.pools[0].backup_pool = 0; 2723 2724 err = dpsw_ctrl_if_set_pools(ethsw->mc_io, 0, ethsw->dpsw_handle, 2725 &dpsw_ctrl_if_pools_cfg); 2726 if (err) { 2727 dev_err(dev, "dpsw_ctrl_if_set_pools() failed\n"); 2728 goto err_get_attr; 2729 } 2730 ethsw->bpid = dpbp_attrs.id; 2731 2732 return 0; 2733 2734 err_get_attr: 2735 dpbp_disable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2736 err_enable: 2737 err_reset: 2738 dpbp_close(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2739 err_open: 2740 fsl_mc_object_free(dpbp_dev); 2741 return err; 2742 } 2743 2744 static void dpaa2_switch_free_dpbp(struct ethsw_core *ethsw) 2745 { 2746 dpbp_disable(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2747 dpbp_close(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2748 fsl_mc_object_free(ethsw->dpbp_dev); 2749 } 2750 2751 static int dpaa2_switch_alloc_rings(struct ethsw_core *ethsw) 2752 { 2753 int i; 2754 2755 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2756 ethsw->fq[i].store = 2757 dpaa2_io_store_create(DPAA2_SWITCH_STORE_SIZE, 2758 ethsw->dev); 2759 if (!ethsw->fq[i].store) { 2760 dev_err(ethsw->dev, "dpaa2_io_store_create failed\n"); 2761 while (--i >= 0) 2762 dpaa2_io_store_destroy(ethsw->fq[i].store); 2763 return -ENOMEM; 2764 } 2765 } 2766 2767 return 0; 2768 } 2769 2770 static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw) 2771 { 2772 int i; 2773 2774 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2775 dpaa2_io_store_destroy(ethsw->fq[i].store); 2776 } 2777 2778 static int dpaa2_switch_pull_fq(struct dpaa2_switch_fq *fq) 2779 { 2780 int err, retries = 0; 2781 2782 /* Try to pull from the FQ while the portal is busy and we didn't hit 2783 * the maximum number fo retries 2784 */ 2785 do { 2786 err = dpaa2_io_service_pull_fq(NULL, fq->fqid, fq->store); 2787 cpu_relax(); 2788 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2789 2790 if (unlikely(err)) 2791 dev_err(fq->ethsw->dev, "dpaa2_io_service_pull err %d", err); 2792 2793 return err; 2794 } 2795 2796 /* Consume all frames pull-dequeued into the store */ 2797 static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq) 2798 { 2799 struct ethsw_core *ethsw = fq->ethsw; 2800 int cleaned = 0, is_last; 2801 struct dpaa2_dq *dq; 2802 int retries = 0; 2803 2804 do { 2805 /* Get the next available FD from the store */ 2806 dq = dpaa2_io_store_next(fq->store, &is_last); 2807 if (unlikely(!dq)) { 2808 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) { 2809 dev_err_once(ethsw->dev, 2810 "No valid dequeue response\n"); 2811 return -ETIMEDOUT; 2812 } 2813 continue; 2814 } 2815 2816 if (fq->type == DPSW_QUEUE_RX) 2817 dpaa2_switch_rx(fq, dpaa2_dq_fd(dq)); 2818 else 2819 dpaa2_switch_tx_conf(fq, dpaa2_dq_fd(dq)); 2820 cleaned++; 2821 2822 } while (!is_last); 2823 2824 return cleaned; 2825 } 2826 2827 /* NAPI poll routine */ 2828 static int dpaa2_switch_poll(struct napi_struct *napi, int budget) 2829 { 2830 int err, cleaned = 0, store_cleaned, work_done; 2831 struct dpaa2_switch_fq *fq; 2832 int retries = 0; 2833 2834 fq = container_of(napi, struct dpaa2_switch_fq, napi); 2835 2836 do { 2837 err = dpaa2_switch_pull_fq(fq); 2838 if (unlikely(err)) 2839 break; 2840 2841 /* Refill pool if appropriate */ 2842 dpaa2_switch_refill_bp(fq->ethsw); 2843 2844 store_cleaned = dpaa2_switch_store_consume(fq); 2845 cleaned += store_cleaned; 2846 2847 if (cleaned >= budget) { 2848 work_done = budget; 2849 goto out; 2850 } 2851 2852 } while (store_cleaned); 2853 2854 /* We didn't consume the entire budget, so finish napi and re-enable 2855 * data availability notifications 2856 */ 2857 napi_complete_done(napi, cleaned); 2858 do { 2859 err = dpaa2_io_service_rearm(NULL, &fq->nctx); 2860 cpu_relax(); 2861 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2862 2863 work_done = max(cleaned, 1); 2864 out: 2865 2866 return work_done; 2867 } 2868 2869 static void dpaa2_switch_fqdan_cb(struct dpaa2_io_notification_ctx *nctx) 2870 { 2871 struct dpaa2_switch_fq *fq; 2872 2873 fq = container_of(nctx, struct dpaa2_switch_fq, nctx); 2874 2875 napi_schedule(&fq->napi); 2876 } 2877 2878 static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw) 2879 { 2880 struct dpsw_ctrl_if_queue_cfg queue_cfg; 2881 struct dpaa2_io_notification_ctx *nctx; 2882 int err, i, j; 2883 2884 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2885 nctx = ðsw->fq[i].nctx; 2886 2887 /* Register a new software context for the FQID. 2888 * By using NULL as the first parameter, we specify that we do 2889 * not care on which cpu are interrupts received for this queue 2890 */ 2891 nctx->is_cdan = 0; 2892 nctx->id = ethsw->fq[i].fqid; 2893 nctx->desired_cpu = DPAA2_IO_ANY_CPU; 2894 nctx->cb = dpaa2_switch_fqdan_cb; 2895 err = dpaa2_io_service_register(NULL, nctx, ethsw->dev); 2896 if (err) { 2897 err = -EPROBE_DEFER; 2898 goto err_register; 2899 } 2900 2901 queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST | 2902 DPSW_CTRL_IF_QUEUE_OPT_USER_CTX; 2903 queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO; 2904 queue_cfg.dest_cfg.dest_id = nctx->dpio_id; 2905 queue_cfg.dest_cfg.priority = 0; 2906 queue_cfg.user_ctx = nctx->qman64; 2907 2908 err = dpsw_ctrl_if_set_queue(ethsw->mc_io, 0, 2909 ethsw->dpsw_handle, 2910 ethsw->fq[i].type, 2911 &queue_cfg); 2912 if (err) 2913 goto err_set_queue; 2914 } 2915 2916 return 0; 2917 2918 err_set_queue: 2919 dpaa2_io_service_deregister(NULL, nctx, ethsw->dev); 2920 err_register: 2921 for (j = 0; j < i; j++) 2922 dpaa2_io_service_deregister(NULL, ðsw->fq[j].nctx, 2923 ethsw->dev); 2924 2925 return err; 2926 } 2927 2928 static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw) 2929 { 2930 int i; 2931 2932 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2933 dpaa2_io_service_deregister(NULL, ðsw->fq[i].nctx, 2934 ethsw->dev); 2935 } 2936 2937 static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw) 2938 { 2939 int err; 2940 2941 /* setup FQs for Rx and Tx Conf */ 2942 err = dpaa2_switch_setup_fqs(ethsw); 2943 if (err) 2944 return err; 2945 2946 /* setup the buffer pool needed on the Rx path */ 2947 err = dpaa2_switch_setup_dpbp(ethsw); 2948 if (err) 2949 return err; 2950 2951 err = dpaa2_switch_alloc_rings(ethsw); 2952 if (err) 2953 goto err_free_dpbp; 2954 2955 err = dpaa2_switch_setup_dpio(ethsw); 2956 if (err) 2957 goto err_destroy_rings; 2958 2959 err = dpaa2_switch_seed_bp(ethsw); 2960 if (err) 2961 goto err_deregister_dpio; 2962 2963 err = dpsw_ctrl_if_enable(ethsw->mc_io, 0, ethsw->dpsw_handle); 2964 if (err) { 2965 dev_err(ethsw->dev, "dpsw_ctrl_if_enable err %d\n", err); 2966 goto err_drain_dpbp; 2967 } 2968 2969 return 0; 2970 2971 err_drain_dpbp: 2972 dpaa2_switch_drain_bp(ethsw); 2973 err_deregister_dpio: 2974 dpaa2_switch_free_dpio(ethsw); 2975 err_destroy_rings: 2976 dpaa2_switch_destroy_rings(ethsw); 2977 err_free_dpbp: 2978 dpaa2_switch_free_dpbp(ethsw); 2979 2980 return err; 2981 } 2982 2983 static void dpaa2_switch_remove_port(struct ethsw_core *ethsw, 2984 u16 port_idx) 2985 { 2986 struct ethsw_port_priv *port_priv = ethsw->ports[port_idx]; 2987 2988 dpaa2_switch_port_disconnect_mac(port_priv); 2989 free_netdev(port_priv->netdev); 2990 ethsw->ports[port_idx] = NULL; 2991 } 2992 2993 static int dpaa2_switch_init(struct fsl_mc_device *sw_dev) 2994 { 2995 struct device *dev = &sw_dev->dev; 2996 struct ethsw_core *ethsw = dev_get_drvdata(dev); 2997 struct dpsw_vlan_if_cfg vcfg = {0}; 2998 struct dpsw_tci_cfg tci_cfg = {0}; 2999 struct dpsw_stp_cfg stp_cfg; 3000 int err; 3001 u16 i; 3002 3003 ethsw->dev_id = sw_dev->obj_desc.id; 3004 3005 err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, ðsw->dpsw_handle); 3006 if (err) { 3007 dev_err(dev, "dpsw_open err %d\n", err); 3008 return err; 3009 } 3010 3011 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 3012 ðsw->sw_attr); 3013 if (err) { 3014 dev_err(dev, "dpsw_get_attributes err %d\n", err); 3015 goto err_close; 3016 } 3017 3018 err = dpsw_get_api_version(ethsw->mc_io, 0, 3019 ðsw->major, 3020 ðsw->minor); 3021 if (err) { 3022 dev_err(dev, "dpsw_get_api_version err %d\n", err); 3023 goto err_close; 3024 } 3025 3026 /* Minimum supported DPSW version check */ 3027 if (ethsw->major < DPSW_MIN_VER_MAJOR || 3028 (ethsw->major == DPSW_MIN_VER_MAJOR && 3029 ethsw->minor < DPSW_MIN_VER_MINOR)) { 3030 dev_err(dev, "DPSW version %d:%d not supported. Use firmware 10.28.0 or greater.\n", 3031 ethsw->major, ethsw->minor); 3032 err = -EOPNOTSUPP; 3033 goto err_close; 3034 } 3035 3036 if (!dpaa2_switch_supports_cpu_traffic(ethsw)) { 3037 err = -EOPNOTSUPP; 3038 goto err_close; 3039 } 3040 3041 dpaa2_switch_detect_features(ethsw); 3042 3043 err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle); 3044 if (err) { 3045 dev_err(dev, "dpsw_reset err %d\n", err); 3046 goto err_close; 3047 } 3048 3049 stp_cfg.vlan_id = DEFAULT_VLAN_ID; 3050 stp_cfg.state = DPSW_STP_STATE_FORWARDING; 3051 3052 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3053 err = dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i); 3054 if (err) { 3055 dev_err(dev, "dpsw_if_disable err %d\n", err); 3056 goto err_close; 3057 } 3058 3059 err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i, 3060 &stp_cfg); 3061 if (err) { 3062 dev_err(dev, "dpsw_if_set_stp err %d for port %d\n", 3063 err, i); 3064 goto err_close; 3065 } 3066 3067 /* Switch starts with all ports configured to VLAN 1. Need to 3068 * remove this setting to allow configuration at bridge join 3069 */ 3070 vcfg.num_ifs = 1; 3071 vcfg.if_id[0] = i; 3072 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle, 3073 DEFAULT_VLAN_ID, &vcfg); 3074 if (err) { 3075 dev_err(dev, "dpsw_vlan_remove_if_untagged err %d\n", 3076 err); 3077 goto err_close; 3078 } 3079 3080 tci_cfg.vlan_id = 4095; 3081 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, i, &tci_cfg); 3082 if (err) { 3083 dev_err(dev, "dpsw_if_set_tci err %d\n", err); 3084 goto err_close; 3085 } 3086 3087 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 3088 DEFAULT_VLAN_ID, &vcfg); 3089 if (err) { 3090 dev_err(dev, "dpsw_vlan_remove_if err %d\n", err); 3091 goto err_close; 3092 } 3093 } 3094 3095 err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, DEFAULT_VLAN_ID); 3096 if (err) { 3097 dev_err(dev, "dpsw_vlan_remove err %d\n", err); 3098 goto err_close; 3099 } 3100 3101 ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered", 3102 WQ_MEM_RECLAIM, "ethsw", 3103 ethsw->sw_attr.id); 3104 if (!ethsw->workqueue) { 3105 err = -ENOMEM; 3106 goto err_close; 3107 } 3108 3109 err = dpsw_fdb_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, 0); 3110 if (err) 3111 goto err_destroy_ordered_workqueue; 3112 3113 err = dpaa2_switch_ctrl_if_setup(ethsw); 3114 if (err) 3115 goto err_destroy_ordered_workqueue; 3116 3117 return 0; 3118 3119 err_destroy_ordered_workqueue: 3120 destroy_workqueue(ethsw->workqueue); 3121 3122 err_close: 3123 dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3124 return err; 3125 } 3126 3127 /* Add an ACL to redirect frames with specific destination MAC address to 3128 * control interface 3129 */ 3130 static int dpaa2_switch_port_trap_mac_addr(struct ethsw_port_priv *port_priv, 3131 const char *mac) 3132 { 3133 struct dpaa2_switch_acl_entry acl_entry = {0}; 3134 3135 /* Match on the destination MAC address */ 3136 ether_addr_copy(acl_entry.key.match.l2_dest_mac, mac); 3137 eth_broadcast_addr(acl_entry.key.mask.l2_dest_mac); 3138 3139 /* Trap to CPU */ 3140 acl_entry.cfg.precedence = 0; 3141 acl_entry.cfg.result.action = DPSW_ACL_ACTION_REDIRECT_TO_CTRL_IF; 3142 3143 return dpaa2_switch_acl_entry_add(port_priv->filter_block, &acl_entry); 3144 } 3145 3146 static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port) 3147 { 3148 const char stpa[ETH_ALEN] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x00}; 3149 struct switchdev_obj_port_vlan vlan = { 3150 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 3151 .vid = DEFAULT_VLAN_ID, 3152 .flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID, 3153 }; 3154 struct net_device *netdev = port_priv->netdev; 3155 struct ethsw_core *ethsw = port_priv->ethsw_data; 3156 struct dpaa2_switch_filter_block *filter_block; 3157 struct dpsw_fdb_cfg fdb_cfg = {0}; 3158 struct dpsw_if_attr dpsw_if_attr; 3159 struct dpaa2_switch_fdb *fdb; 3160 struct dpsw_acl_cfg acl_cfg; 3161 u16 fdb_id, acl_tbl_id; 3162 int err; 3163 3164 /* Get the Tx queue for this specific port */ 3165 err = dpsw_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 3166 port_priv->idx, &dpsw_if_attr); 3167 if (err) { 3168 netdev_err(netdev, "dpsw_if_get_attributes err %d\n", err); 3169 return err; 3170 } 3171 port_priv->tx_qdid = dpsw_if_attr.qdid; 3172 3173 /* Create a FDB table for this particular switch port */ 3174 fdb_cfg.num_fdb_entries = ethsw->sw_attr.max_fdb_entries / ethsw->sw_attr.num_ifs; 3175 err = dpsw_fdb_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3176 &fdb_id, &fdb_cfg); 3177 if (err) { 3178 netdev_err(netdev, "dpsw_fdb_add err %d\n", err); 3179 return err; 3180 } 3181 3182 /* Find an unused dpaa2_switch_fdb structure and use it */ 3183 fdb = dpaa2_switch_fdb_get_unused(ethsw); 3184 fdb->fdb_id = fdb_id; 3185 fdb->in_use = true; 3186 fdb->bridge_dev = NULL; 3187 port_priv->fdb = fdb; 3188 3189 /* We need to add VLAN 1 as the PVID on this port until it is under a 3190 * bridge since the DPAA2 switch is not able to handle the traffic in a 3191 * VLAN unaware fashion 3192 */ 3193 err = dpaa2_switch_port_vlans_add(netdev, &vlan); 3194 if (err) 3195 return err; 3196 3197 /* Setup the egress flooding domains (broadcast, unknown unicast */ 3198 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 3199 if (err) 3200 return err; 3201 3202 /* Create an ACL table to be used by this switch port */ 3203 acl_cfg.max_entries = DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES; 3204 err = dpsw_acl_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3205 &acl_tbl_id, &acl_cfg); 3206 if (err) { 3207 netdev_err(netdev, "dpsw_acl_add err %d\n", err); 3208 return err; 3209 } 3210 3211 filter_block = dpaa2_switch_filter_block_get_unused(ethsw); 3212 filter_block->ethsw = ethsw; 3213 filter_block->acl_id = acl_tbl_id; 3214 filter_block->in_use = true; 3215 filter_block->num_acl_rules = 0; 3216 INIT_LIST_HEAD(&filter_block->acl_entries); 3217 INIT_LIST_HEAD(&filter_block->mirror_entries); 3218 3219 err = dpaa2_switch_port_acl_tbl_bind(port_priv, filter_block); 3220 if (err) 3221 return err; 3222 3223 err = dpaa2_switch_port_trap_mac_addr(port_priv, stpa); 3224 if (err) 3225 return err; 3226 3227 return err; 3228 } 3229 3230 static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw) 3231 { 3232 dpsw_ctrl_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3233 dpaa2_switch_free_dpio(ethsw); 3234 dpaa2_switch_destroy_rings(ethsw); 3235 dpaa2_switch_drain_bp(ethsw); 3236 dpaa2_switch_free_dpbp(ethsw); 3237 } 3238 3239 static void dpaa2_switch_teardown(struct fsl_mc_device *sw_dev) 3240 { 3241 struct device *dev = &sw_dev->dev; 3242 struct ethsw_core *ethsw = dev_get_drvdata(dev); 3243 int err; 3244 3245 dpaa2_switch_ctrl_if_teardown(ethsw); 3246 3247 destroy_workqueue(ethsw->workqueue); 3248 3249 err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3250 if (err) 3251 dev_warn(dev, "dpsw_close err %d\n", err); 3252 } 3253 3254 static void dpaa2_switch_remove(struct fsl_mc_device *sw_dev) 3255 { 3256 struct ethsw_port_priv *port_priv; 3257 struct ethsw_core *ethsw; 3258 struct device *dev; 3259 int i; 3260 3261 dev = &sw_dev->dev; 3262 ethsw = dev_get_drvdata(dev); 3263 3264 dpaa2_switch_teardown_irqs(sw_dev); 3265 3266 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3267 3268 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3269 port_priv = ethsw->ports[i]; 3270 unregister_netdev(port_priv->netdev); 3271 dpaa2_switch_remove_port(ethsw, i); 3272 } 3273 3274 kfree(ethsw->fdbs); 3275 kfree(ethsw->filter_blocks); 3276 kfree(ethsw->ports); 3277 3278 dpaa2_switch_teardown(sw_dev); 3279 3280 fsl_mc_portal_free(ethsw->mc_io); 3281 3282 kfree(ethsw); 3283 3284 dev_set_drvdata(dev, NULL); 3285 } 3286 3287 static int dpaa2_switch_probe_port(struct ethsw_core *ethsw, 3288 u16 port_idx) 3289 { 3290 struct ethsw_port_priv *port_priv; 3291 struct device *dev = ethsw->dev; 3292 struct net_device *port_netdev; 3293 int err; 3294 3295 port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv)); 3296 if (!port_netdev) { 3297 dev_err(dev, "alloc_etherdev error\n"); 3298 return -ENOMEM; 3299 } 3300 3301 port_priv = netdev_priv(port_netdev); 3302 port_priv->netdev = port_netdev; 3303 port_priv->ethsw_data = ethsw; 3304 3305 mutex_init(&port_priv->mac_lock); 3306 3307 port_priv->idx = port_idx; 3308 port_priv->stp_state = BR_STATE_FORWARDING; 3309 3310 SET_NETDEV_DEV(port_netdev, dev); 3311 port_netdev->netdev_ops = &dpaa2_switch_port_ops; 3312 port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops; 3313 3314 port_netdev->needed_headroom = DPAA2_SWITCH_NEEDED_HEADROOM; 3315 3316 port_priv->bcast_flood = true; 3317 port_priv->ucast_flood = true; 3318 3319 /* Set MTU limits */ 3320 port_netdev->min_mtu = ETH_MIN_MTU; 3321 port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH; 3322 3323 /* Populate the private port structure so that later calls to 3324 * dpaa2_switch_port_init() can use it. 3325 */ 3326 ethsw->ports[port_idx] = port_priv; 3327 3328 /* The DPAA2 switch's ingress path depends on the VLAN table, 3329 * thus we are not able to disable VLAN filtering. 3330 */ 3331 port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER | 3332 NETIF_F_HW_VLAN_STAG_FILTER | 3333 NETIF_F_HW_TC; 3334 port_netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 3335 3336 err = dpaa2_switch_port_init(port_priv, port_idx); 3337 if (err) 3338 goto err_port_probe; 3339 3340 err = dpaa2_switch_port_set_mac_addr(port_priv); 3341 if (err) 3342 goto err_port_probe; 3343 3344 err = dpaa2_switch_port_set_learning(port_priv, false); 3345 if (err) 3346 goto err_port_probe; 3347 port_priv->learn_ena = false; 3348 3349 err = dpaa2_switch_port_connect_mac(port_priv); 3350 if (err) 3351 goto err_port_probe; 3352 3353 return 0; 3354 3355 err_port_probe: 3356 free_netdev(port_netdev); 3357 ethsw->ports[port_idx] = NULL; 3358 3359 return err; 3360 } 3361 3362 static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev) 3363 { 3364 struct device *dev = &sw_dev->dev; 3365 struct ethsw_core *ethsw; 3366 int i, err; 3367 3368 /* Allocate switch core*/ 3369 ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL); 3370 3371 if (!ethsw) 3372 return -ENOMEM; 3373 3374 ethsw->dev = dev; 3375 ethsw->iommu_domain = iommu_get_domain_for_dev(dev); 3376 dev_set_drvdata(dev, ethsw); 3377 3378 err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, 3379 ðsw->mc_io); 3380 if (err) { 3381 if (err == -ENXIO) 3382 err = -EPROBE_DEFER; 3383 else 3384 dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); 3385 goto err_free_drvdata; 3386 } 3387 3388 err = dpaa2_switch_init(sw_dev); 3389 if (err) 3390 goto err_free_cmdport; 3391 3392 ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports), 3393 GFP_KERNEL); 3394 if (!(ethsw->ports)) { 3395 err = -ENOMEM; 3396 goto err_teardown; 3397 } 3398 3399 ethsw->fdbs = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->fdbs), 3400 GFP_KERNEL); 3401 if (!ethsw->fdbs) { 3402 err = -ENOMEM; 3403 goto err_free_ports; 3404 } 3405 3406 ethsw->filter_blocks = kcalloc(ethsw->sw_attr.num_ifs, 3407 sizeof(*ethsw->filter_blocks), 3408 GFP_KERNEL); 3409 if (!ethsw->filter_blocks) { 3410 err = -ENOMEM; 3411 goto err_free_fdbs; 3412 } 3413 3414 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3415 err = dpaa2_switch_probe_port(ethsw, i); 3416 if (err) 3417 goto err_free_netdev; 3418 } 3419 3420 /* Add a NAPI instance for each of the Rx queues. The first port's 3421 * net_device will be associated with the instances since we do not have 3422 * different queues for each switch ports. 3423 */ 3424 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 3425 netif_napi_add(ethsw->ports[0]->netdev, ðsw->fq[i].napi, 3426 dpaa2_switch_poll); 3427 3428 /* Setup IRQs */ 3429 err = dpaa2_switch_setup_irqs(sw_dev); 3430 if (err) 3431 goto err_stop; 3432 3433 /* By convention, if the mirror port is equal to the number of switch 3434 * interfaces, then mirroring of any kind is disabled. 3435 */ 3436 ethsw->mirror_port = ethsw->sw_attr.num_ifs; 3437 3438 /* Register the netdev only when the entire setup is done and the 3439 * switch port interfaces are ready to receive traffic 3440 */ 3441 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3442 err = register_netdev(ethsw->ports[i]->netdev); 3443 if (err < 0) { 3444 dev_err(dev, "register_netdev error %d\n", err); 3445 goto err_unregister_ports; 3446 } 3447 } 3448 3449 return 0; 3450 3451 err_unregister_ports: 3452 for (i--; i >= 0; i--) 3453 unregister_netdev(ethsw->ports[i]->netdev); 3454 dpaa2_switch_teardown_irqs(sw_dev); 3455 err_stop: 3456 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3457 err_free_netdev: 3458 for (i--; i >= 0; i--) 3459 dpaa2_switch_remove_port(ethsw, i); 3460 kfree(ethsw->filter_blocks); 3461 err_free_fdbs: 3462 kfree(ethsw->fdbs); 3463 err_free_ports: 3464 kfree(ethsw->ports); 3465 3466 err_teardown: 3467 dpaa2_switch_teardown(sw_dev); 3468 3469 err_free_cmdport: 3470 fsl_mc_portal_free(ethsw->mc_io); 3471 3472 err_free_drvdata: 3473 kfree(ethsw); 3474 dev_set_drvdata(dev, NULL); 3475 3476 return err; 3477 } 3478 3479 static const struct fsl_mc_device_id dpaa2_switch_match_id_table[] = { 3480 { 3481 .vendor = FSL_MC_VENDOR_FREESCALE, 3482 .obj_type = "dpsw", 3483 }, 3484 { .vendor = 0x0 } 3485 }; 3486 MODULE_DEVICE_TABLE(fslmc, dpaa2_switch_match_id_table); 3487 3488 static struct fsl_mc_driver dpaa2_switch_drv = { 3489 .driver = { 3490 .name = KBUILD_MODNAME, 3491 }, 3492 .probe = dpaa2_switch_probe, 3493 .remove = dpaa2_switch_remove, 3494 .match_id_table = dpaa2_switch_match_id_table 3495 }; 3496 3497 static struct notifier_block dpaa2_switch_port_nb __read_mostly = { 3498 .notifier_call = dpaa2_switch_port_netdevice_event, 3499 }; 3500 3501 static struct notifier_block dpaa2_switch_port_switchdev_nb = { 3502 .notifier_call = dpaa2_switch_port_event, 3503 }; 3504 3505 static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb = { 3506 .notifier_call = dpaa2_switch_port_blocking_event, 3507 }; 3508 3509 static int dpaa2_switch_register_notifiers(void) 3510 { 3511 int err; 3512 3513 err = register_netdevice_notifier(&dpaa2_switch_port_nb); 3514 if (err) { 3515 pr_err("dpaa2-switch: failed to register net_device notifier (%d)\n", err); 3516 return err; 3517 } 3518 3519 err = register_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3520 if (err) { 3521 pr_err("dpaa2-switch: failed to register switchdev notifier (%d)\n", err); 3522 goto err_switchdev_nb; 3523 } 3524 3525 err = register_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3526 if (err) { 3527 pr_err("dpaa2-switch: failed to register switchdev blocking notifier (%d)\n", err); 3528 goto err_switchdev_blocking_nb; 3529 } 3530 3531 return 0; 3532 3533 err_switchdev_blocking_nb: 3534 unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3535 err_switchdev_nb: 3536 unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3537 3538 return err; 3539 } 3540 3541 static void dpaa2_switch_unregister_notifiers(void) 3542 { 3543 int err; 3544 3545 err = unregister_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3546 if (err) 3547 pr_err("dpaa2-switch: failed to unregister switchdev blocking notifier (%d)\n", 3548 err); 3549 3550 err = unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3551 if (err) 3552 pr_err("dpaa2-switch: failed to unregister switchdev notifier (%d)\n", err); 3553 3554 err = unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3555 if (err) 3556 pr_err("dpaa2-switch: failed to unregister net_device notifier (%d)\n", err); 3557 } 3558 3559 static int __init dpaa2_switch_driver_init(void) 3560 { 3561 int err; 3562 3563 err = fsl_mc_driver_register(&dpaa2_switch_drv); 3564 if (err) 3565 return err; 3566 3567 err = dpaa2_switch_register_notifiers(); 3568 if (err) { 3569 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3570 return err; 3571 } 3572 3573 return 0; 3574 } 3575 3576 static void __exit dpaa2_switch_driver_exit(void) 3577 { 3578 dpaa2_switch_unregister_notifiers(); 3579 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3580 } 3581 3582 module_init(dpaa2_switch_driver_init); 3583 module_exit(dpaa2_switch_driver_exit); 3584 3585 MODULE_LICENSE("GPL v2"); 3586 MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver"); 3587