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 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 int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC; 784 u32 portid = NETLINK_CB(dump->cb->skb).portid; 785 u32 seq = dump->cb->nlh->nlmsg_seq; 786 struct nlmsghdr *nlh; 787 struct ndmsg *ndm; 788 789 if (dump->idx < dump->cb->args[2]) 790 goto skip; 791 792 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, 793 sizeof(*ndm), NLM_F_MULTI); 794 if (!nlh) 795 return -EMSGSIZE; 796 797 ndm = nlmsg_data(nlh); 798 ndm->ndm_family = AF_BRIDGE; 799 ndm->ndm_pad1 = 0; 800 ndm->ndm_pad2 = 0; 801 ndm->ndm_flags = NTF_SELF; 802 ndm->ndm_type = 0; 803 ndm->ndm_ifindex = dump->dev->ifindex; 804 ndm->ndm_state = is_dynamic ? NUD_REACHABLE : NUD_NOARP; 805 806 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr)) 807 goto nla_put_failure; 808 809 nlmsg_end(dump->skb, nlh); 810 811 skip: 812 dump->idx++; 813 return 0; 814 815 nla_put_failure: 816 nlmsg_cancel(dump->skb, nlh); 817 return -EMSGSIZE; 818 } 819 820 static int dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry, 821 struct ethsw_port_priv *port_priv) 822 { 823 int idx = port_priv->idx; 824 int valid; 825 826 if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) 827 valid = entry->if_info == port_priv->idx; 828 else 829 valid = entry->if_mask[idx / 8] & BIT(idx % 8); 830 831 return valid; 832 } 833 834 static int dpaa2_switch_fdb_iterate(struct ethsw_port_priv *port_priv, 835 dpaa2_switch_fdb_cb_t cb, void *data) 836 { 837 struct net_device *net_dev = port_priv->netdev; 838 struct ethsw_core *ethsw = port_priv->ethsw_data; 839 struct device *dev = net_dev->dev.parent; 840 struct fdb_dump_entry *fdb_entries; 841 struct fdb_dump_entry fdb_entry; 842 dma_addr_t fdb_dump_iova; 843 u16 num_fdb_entries; 844 u32 fdb_dump_size; 845 int err = 0, i; 846 u8 *dma_mem; 847 u16 fdb_id; 848 849 fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry); 850 dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL); 851 if (!dma_mem) 852 return -ENOMEM; 853 854 fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size, 855 DMA_FROM_DEVICE); 856 if (dma_mapping_error(dev, fdb_dump_iova)) { 857 netdev_err(net_dev, "dma_map_single() failed\n"); 858 err = -ENOMEM; 859 goto err_map; 860 } 861 862 fdb_id = dpaa2_switch_port_get_fdb_id(port_priv); 863 err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, fdb_id, 864 fdb_dump_iova, fdb_dump_size, &num_fdb_entries); 865 if (err) { 866 netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err); 867 goto err_dump; 868 } 869 870 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE); 871 872 fdb_entries = (struct fdb_dump_entry *)dma_mem; 873 for (i = 0; i < num_fdb_entries; i++) { 874 fdb_entry = fdb_entries[i]; 875 876 err = cb(port_priv, &fdb_entry, data); 877 if (err) 878 goto end; 879 } 880 881 end: 882 kfree(dma_mem); 883 884 return 0; 885 886 err_dump: 887 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE); 888 err_map: 889 kfree(dma_mem); 890 return err; 891 } 892 893 static int dpaa2_switch_fdb_entry_dump(struct ethsw_port_priv *port_priv, 894 struct fdb_dump_entry *fdb_entry, 895 void *data) 896 { 897 if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv)) 898 return 0; 899 900 return dpaa2_switch_fdb_dump_nl(fdb_entry, data); 901 } 902 903 static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 904 struct net_device *net_dev, 905 struct net_device *filter_dev, int *idx) 906 { 907 struct ethsw_port_priv *port_priv = netdev_priv(net_dev); 908 struct ethsw_dump_ctx dump = { 909 .dev = net_dev, 910 .skb = skb, 911 .cb = cb, 912 .idx = *idx, 913 }; 914 int err; 915 916 err = dpaa2_switch_fdb_iterate(port_priv, dpaa2_switch_fdb_entry_dump, &dump); 917 *idx = dump.idx; 918 919 return err; 920 } 921 922 static int dpaa2_switch_fdb_entry_fast_age(struct ethsw_port_priv *port_priv, 923 struct fdb_dump_entry *fdb_entry, 924 void *data __always_unused) 925 { 926 if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv)) 927 return 0; 928 929 if (!(fdb_entry->type & DPSW_FDB_ENTRY_TYPE_DYNAMIC)) 930 return 0; 931 932 if (fdb_entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST) 933 dpaa2_switch_port_fdb_del_uc(port_priv, fdb_entry->mac_addr); 934 else 935 dpaa2_switch_port_fdb_del_mc(port_priv, fdb_entry->mac_addr); 936 937 return 0; 938 } 939 940 static void dpaa2_switch_port_fast_age(struct ethsw_port_priv *port_priv) 941 { 942 dpaa2_switch_fdb_iterate(port_priv, 943 dpaa2_switch_fdb_entry_fast_age, NULL); 944 } 945 946 static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto, 947 u16 vid) 948 { 949 struct switchdev_obj_port_vlan vlan = { 950 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 951 .vid = vid, 952 .obj.orig_dev = netdev, 953 /* This API only allows programming tagged, non-PVID VIDs */ 954 .flags = 0, 955 }; 956 957 return dpaa2_switch_port_vlans_add(netdev, &vlan); 958 } 959 960 static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto, 961 u16 vid) 962 { 963 struct switchdev_obj_port_vlan vlan = { 964 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 965 .vid = vid, 966 .obj.orig_dev = netdev, 967 /* This API only allows programming tagged, non-PVID VIDs */ 968 .flags = 0, 969 }; 970 971 return dpaa2_switch_port_vlans_del(netdev, &vlan); 972 } 973 974 static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv) 975 { 976 struct ethsw_core *ethsw = port_priv->ethsw_data; 977 struct net_device *net_dev = port_priv->netdev; 978 struct device *dev = net_dev->dev.parent; 979 u8 mac_addr[ETH_ALEN]; 980 int err; 981 982 if (!(ethsw->features & ETHSW_FEATURE_MAC_ADDR)) 983 return 0; 984 985 /* Get firmware address, if any */ 986 err = dpsw_if_get_port_mac_addr(ethsw->mc_io, 0, ethsw->dpsw_handle, 987 port_priv->idx, mac_addr); 988 if (err) { 989 dev_err(dev, "dpsw_if_get_port_mac_addr() failed\n"); 990 return err; 991 } 992 993 /* First check if firmware has any address configured by bootloader */ 994 if (!is_zero_ether_addr(mac_addr)) { 995 eth_hw_addr_set(net_dev, mac_addr); 996 } else { 997 /* No MAC address configured, fill in net_dev->dev_addr 998 * with a random one 999 */ 1000 eth_hw_addr_random(net_dev); 1001 dev_dbg_once(dev, "device(s) have all-zero hwaddr, replaced with random\n"); 1002 1003 /* Override NET_ADDR_RANDOM set by eth_hw_addr_random(); for all 1004 * practical purposes, this will be our "permanent" mac address, 1005 * at least until the next reboot. This move will also permit 1006 * register_netdevice() to properly fill up net_dev->perm_addr. 1007 */ 1008 net_dev->addr_assign_type = NET_ADDR_PERM; 1009 } 1010 1011 return 0; 1012 } 1013 1014 static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw, 1015 const struct dpaa2_fd *fd) 1016 { 1017 struct device *dev = ethsw->dev; 1018 unsigned char *buffer_start; 1019 struct sk_buff **skbh, *skb; 1020 dma_addr_t fd_addr; 1021 1022 fd_addr = dpaa2_fd_get_addr(fd); 1023 skbh = dpaa2_iova_to_virt(ethsw->iommu_domain, fd_addr); 1024 1025 skb = *skbh; 1026 buffer_start = (unsigned char *)skbh; 1027 1028 dma_unmap_single(dev, fd_addr, 1029 skb_tail_pointer(skb) - buffer_start, 1030 DMA_TO_DEVICE); 1031 1032 /* Move on with skb release */ 1033 dev_kfree_skb(skb); 1034 } 1035 1036 static int dpaa2_switch_build_single_fd(struct ethsw_core *ethsw, 1037 struct sk_buff *skb, 1038 struct dpaa2_fd *fd) 1039 { 1040 struct device *dev = ethsw->dev; 1041 struct sk_buff **skbh; 1042 dma_addr_t addr; 1043 u8 *buff_start; 1044 void *hwa; 1045 1046 buff_start = PTR_ALIGN(skb->data - DPAA2_SWITCH_TX_DATA_OFFSET - 1047 DPAA2_SWITCH_TX_BUF_ALIGN, 1048 DPAA2_SWITCH_TX_BUF_ALIGN); 1049 1050 /* Clear FAS to have consistent values for TX confirmation. It is 1051 * located in the first 8 bytes of the buffer's hardware annotation 1052 * area 1053 */ 1054 hwa = buff_start + DPAA2_SWITCH_SWA_SIZE; 1055 memset(hwa, 0, 8); 1056 1057 /* Store a backpointer to the skb at the beginning of the buffer 1058 * (in the private data area) such that we can release it 1059 * on Tx confirm 1060 */ 1061 skbh = (struct sk_buff **)buff_start; 1062 *skbh = skb; 1063 1064 addr = dma_map_single(dev, buff_start, 1065 skb_tail_pointer(skb) - buff_start, 1066 DMA_TO_DEVICE); 1067 if (unlikely(dma_mapping_error(dev, addr))) 1068 return -ENOMEM; 1069 1070 /* Setup the FD fields */ 1071 memset(fd, 0, sizeof(*fd)); 1072 1073 dpaa2_fd_set_addr(fd, addr); 1074 dpaa2_fd_set_offset(fd, (u16)(skb->data - buff_start)); 1075 dpaa2_fd_set_len(fd, skb->len); 1076 dpaa2_fd_set_format(fd, dpaa2_fd_single); 1077 1078 return 0; 1079 } 1080 1081 static netdev_tx_t dpaa2_switch_port_tx(struct sk_buff *skb, 1082 struct net_device *net_dev) 1083 { 1084 struct ethsw_port_priv *port_priv = netdev_priv(net_dev); 1085 struct ethsw_core *ethsw = port_priv->ethsw_data; 1086 int retries = DPAA2_SWITCH_SWP_BUSY_RETRIES; 1087 struct dpaa2_fd fd; 1088 int err; 1089 1090 if (unlikely(skb_headroom(skb) < DPAA2_SWITCH_NEEDED_HEADROOM)) { 1091 struct sk_buff *ns; 1092 1093 ns = skb_realloc_headroom(skb, DPAA2_SWITCH_NEEDED_HEADROOM); 1094 if (unlikely(!ns)) { 1095 net_err_ratelimited("%s: Error reallocating skb headroom\n", net_dev->name); 1096 goto err_free_skb; 1097 } 1098 dev_consume_skb_any(skb); 1099 skb = ns; 1100 } 1101 1102 /* We'll be holding a back-reference to the skb until Tx confirmation */ 1103 skb = skb_unshare(skb, GFP_ATOMIC); 1104 if (unlikely(!skb)) { 1105 /* skb_unshare() has already freed the skb */ 1106 net_err_ratelimited("%s: Error copying the socket buffer\n", net_dev->name); 1107 goto err_exit; 1108 } 1109 1110 /* At this stage, we do not support non-linear skbs so just try to 1111 * linearize the skb and if that's not working, just drop the packet. 1112 */ 1113 err = skb_linearize(skb); 1114 if (err) { 1115 net_err_ratelimited("%s: skb_linearize error (%d)!\n", net_dev->name, err); 1116 goto err_free_skb; 1117 } 1118 1119 err = dpaa2_switch_build_single_fd(ethsw, skb, &fd); 1120 if (unlikely(err)) { 1121 net_err_ratelimited("%s: ethsw_build_*_fd() %d\n", net_dev->name, err); 1122 goto err_free_skb; 1123 } 1124 1125 do { 1126 err = dpaa2_io_service_enqueue_qd(NULL, 1127 port_priv->tx_qdid, 1128 8, 0, &fd); 1129 retries--; 1130 } while (err == -EBUSY && retries); 1131 1132 if (unlikely(err < 0)) { 1133 dpaa2_switch_free_fd(ethsw, &fd); 1134 goto err_exit; 1135 } 1136 1137 return NETDEV_TX_OK; 1138 1139 err_free_skb: 1140 dev_kfree_skb(skb); 1141 err_exit: 1142 return NETDEV_TX_OK; 1143 } 1144 1145 static int 1146 dpaa2_switch_setup_tc_cls_flower(struct dpaa2_switch_filter_block *filter_block, 1147 struct flow_cls_offload *f) 1148 { 1149 switch (f->command) { 1150 case FLOW_CLS_REPLACE: 1151 return dpaa2_switch_cls_flower_replace(filter_block, f); 1152 case FLOW_CLS_DESTROY: 1153 return dpaa2_switch_cls_flower_destroy(filter_block, f); 1154 default: 1155 return -EOPNOTSUPP; 1156 } 1157 } 1158 1159 static int 1160 dpaa2_switch_setup_tc_cls_matchall(struct dpaa2_switch_filter_block *block, 1161 struct tc_cls_matchall_offload *f) 1162 { 1163 switch (f->command) { 1164 case TC_CLSMATCHALL_REPLACE: 1165 return dpaa2_switch_cls_matchall_replace(block, f); 1166 case TC_CLSMATCHALL_DESTROY: 1167 return dpaa2_switch_cls_matchall_destroy(block, f); 1168 default: 1169 return -EOPNOTSUPP; 1170 } 1171 } 1172 1173 static int dpaa2_switch_port_setup_tc_block_cb_ig(enum tc_setup_type type, 1174 void *type_data, 1175 void *cb_priv) 1176 { 1177 switch (type) { 1178 case TC_SETUP_CLSFLOWER: 1179 return dpaa2_switch_setup_tc_cls_flower(cb_priv, type_data); 1180 case TC_SETUP_CLSMATCHALL: 1181 return dpaa2_switch_setup_tc_cls_matchall(cb_priv, type_data); 1182 default: 1183 return -EOPNOTSUPP; 1184 } 1185 } 1186 1187 static LIST_HEAD(dpaa2_switch_block_cb_list); 1188 1189 static int 1190 dpaa2_switch_port_acl_tbl_bind(struct ethsw_port_priv *port_priv, 1191 struct dpaa2_switch_filter_block *block) 1192 { 1193 struct ethsw_core *ethsw = port_priv->ethsw_data; 1194 struct net_device *netdev = port_priv->netdev; 1195 struct dpsw_acl_if_cfg acl_if_cfg; 1196 int err; 1197 1198 if (port_priv->filter_block) 1199 return -EINVAL; 1200 1201 acl_if_cfg.if_id[0] = port_priv->idx; 1202 acl_if_cfg.num_ifs = 1; 1203 err = dpsw_acl_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1204 block->acl_id, &acl_if_cfg); 1205 if (err) { 1206 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err); 1207 return err; 1208 } 1209 1210 block->ports |= BIT(port_priv->idx); 1211 port_priv->filter_block = block; 1212 1213 return 0; 1214 } 1215 1216 static int 1217 dpaa2_switch_port_acl_tbl_unbind(struct ethsw_port_priv *port_priv, 1218 struct dpaa2_switch_filter_block *block) 1219 { 1220 struct ethsw_core *ethsw = port_priv->ethsw_data; 1221 struct net_device *netdev = port_priv->netdev; 1222 struct dpsw_acl_if_cfg acl_if_cfg; 1223 int err; 1224 1225 if (port_priv->filter_block != block) 1226 return -EINVAL; 1227 1228 acl_if_cfg.if_id[0] = port_priv->idx; 1229 acl_if_cfg.num_ifs = 1; 1230 err = dpsw_acl_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1231 block->acl_id, &acl_if_cfg); 1232 if (err) { 1233 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err); 1234 return err; 1235 } 1236 1237 block->ports &= ~BIT(port_priv->idx); 1238 port_priv->filter_block = NULL; 1239 return 0; 1240 } 1241 1242 static int dpaa2_switch_port_block_bind(struct ethsw_port_priv *port_priv, 1243 struct dpaa2_switch_filter_block *block) 1244 { 1245 struct dpaa2_switch_filter_block *old_block = port_priv->filter_block; 1246 int err; 1247 1248 /* Offload all the mirror entries found in the block on this new port 1249 * joining it. 1250 */ 1251 err = dpaa2_switch_block_offload_mirror(block, port_priv); 1252 if (err) 1253 return err; 1254 1255 /* If the port is already bound to this ACL table then do nothing. This 1256 * can happen when this port is the first one to join a tc block 1257 */ 1258 if (port_priv->filter_block == block) 1259 return 0; 1260 1261 err = dpaa2_switch_port_acl_tbl_unbind(port_priv, old_block); 1262 if (err) 1263 return err; 1264 1265 /* Mark the previous ACL table as being unused if this was the last 1266 * port that was using it. 1267 */ 1268 if (old_block->ports == 0) 1269 old_block->in_use = false; 1270 1271 return dpaa2_switch_port_acl_tbl_bind(port_priv, block); 1272 } 1273 1274 static int 1275 dpaa2_switch_port_block_unbind(struct ethsw_port_priv *port_priv, 1276 struct dpaa2_switch_filter_block *block) 1277 { 1278 struct ethsw_core *ethsw = port_priv->ethsw_data; 1279 struct dpaa2_switch_filter_block *new_block; 1280 int err; 1281 1282 /* Unoffload all the mirror entries found in the block from the 1283 * port leaving it. 1284 */ 1285 err = dpaa2_switch_block_unoffload_mirror(block, port_priv); 1286 if (err) 1287 return err; 1288 1289 /* We are the last port that leaves a block (an ACL table). 1290 * We'll continue to use this table. 1291 */ 1292 if (block->ports == BIT(port_priv->idx)) 1293 return 0; 1294 1295 err = dpaa2_switch_port_acl_tbl_unbind(port_priv, block); 1296 if (err) 1297 return err; 1298 1299 if (block->ports == 0) 1300 block->in_use = false; 1301 1302 new_block = dpaa2_switch_filter_block_get_unused(ethsw); 1303 new_block->in_use = true; 1304 return dpaa2_switch_port_acl_tbl_bind(port_priv, new_block); 1305 } 1306 1307 static int dpaa2_switch_setup_tc_block_bind(struct net_device *netdev, 1308 struct flow_block_offload *f) 1309 { 1310 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1311 struct ethsw_core *ethsw = port_priv->ethsw_data; 1312 struct dpaa2_switch_filter_block *filter_block; 1313 struct flow_block_cb *block_cb; 1314 bool register_block = false; 1315 int err; 1316 1317 block_cb = flow_block_cb_lookup(f->block, 1318 dpaa2_switch_port_setup_tc_block_cb_ig, 1319 ethsw); 1320 1321 if (!block_cb) { 1322 /* If the filter block is not already known, then this port 1323 * must be the first to join it. In this case, we can just 1324 * continue to use our private table 1325 */ 1326 filter_block = port_priv->filter_block; 1327 1328 block_cb = flow_block_cb_alloc(dpaa2_switch_port_setup_tc_block_cb_ig, 1329 ethsw, filter_block, NULL); 1330 if (IS_ERR(block_cb)) 1331 return PTR_ERR(block_cb); 1332 1333 register_block = true; 1334 } else { 1335 filter_block = flow_block_cb_priv(block_cb); 1336 } 1337 1338 flow_block_cb_incref(block_cb); 1339 err = dpaa2_switch_port_block_bind(port_priv, filter_block); 1340 if (err) 1341 goto err_block_bind; 1342 1343 if (register_block) { 1344 flow_block_cb_add(block_cb, f); 1345 list_add_tail(&block_cb->driver_list, 1346 &dpaa2_switch_block_cb_list); 1347 } 1348 1349 return 0; 1350 1351 err_block_bind: 1352 if (!flow_block_cb_decref(block_cb)) 1353 flow_block_cb_free(block_cb); 1354 return err; 1355 } 1356 1357 static void dpaa2_switch_setup_tc_block_unbind(struct net_device *netdev, 1358 struct flow_block_offload *f) 1359 { 1360 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1361 struct ethsw_core *ethsw = port_priv->ethsw_data; 1362 struct dpaa2_switch_filter_block *filter_block; 1363 struct flow_block_cb *block_cb; 1364 int err; 1365 1366 block_cb = flow_block_cb_lookup(f->block, 1367 dpaa2_switch_port_setup_tc_block_cb_ig, 1368 ethsw); 1369 if (!block_cb) 1370 return; 1371 1372 filter_block = flow_block_cb_priv(block_cb); 1373 err = dpaa2_switch_port_block_unbind(port_priv, filter_block); 1374 if (!err && !flow_block_cb_decref(block_cb)) { 1375 flow_block_cb_remove(block_cb, f); 1376 list_del(&block_cb->driver_list); 1377 } 1378 } 1379 1380 static int dpaa2_switch_setup_tc_block(struct net_device *netdev, 1381 struct flow_block_offload *f) 1382 { 1383 if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) 1384 return -EOPNOTSUPP; 1385 1386 f->driver_block_list = &dpaa2_switch_block_cb_list; 1387 1388 switch (f->command) { 1389 case FLOW_BLOCK_BIND: 1390 return dpaa2_switch_setup_tc_block_bind(netdev, f); 1391 case FLOW_BLOCK_UNBIND: 1392 dpaa2_switch_setup_tc_block_unbind(netdev, f); 1393 return 0; 1394 default: 1395 return -EOPNOTSUPP; 1396 } 1397 } 1398 1399 static int dpaa2_switch_port_setup_tc(struct net_device *netdev, 1400 enum tc_setup_type type, 1401 void *type_data) 1402 { 1403 switch (type) { 1404 case TC_SETUP_BLOCK: { 1405 return dpaa2_switch_setup_tc_block(netdev, type_data); 1406 } 1407 default: 1408 return -EOPNOTSUPP; 1409 } 1410 1411 return 0; 1412 } 1413 1414 static const struct net_device_ops dpaa2_switch_port_ops = { 1415 .ndo_open = dpaa2_switch_port_open, 1416 .ndo_stop = dpaa2_switch_port_stop, 1417 1418 .ndo_set_mac_address = eth_mac_addr, 1419 .ndo_get_stats64 = dpaa2_switch_port_get_stats, 1420 .ndo_change_mtu = dpaa2_switch_port_change_mtu, 1421 .ndo_has_offload_stats = dpaa2_switch_port_has_offload_stats, 1422 .ndo_get_offload_stats = dpaa2_switch_port_get_offload_stats, 1423 .ndo_fdb_dump = dpaa2_switch_port_fdb_dump, 1424 .ndo_vlan_rx_add_vid = dpaa2_switch_port_vlan_add, 1425 .ndo_vlan_rx_kill_vid = dpaa2_switch_port_vlan_kill, 1426 1427 .ndo_start_xmit = dpaa2_switch_port_tx, 1428 .ndo_get_port_parent_id = dpaa2_switch_port_parent_id, 1429 .ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name, 1430 .ndo_setup_tc = dpaa2_switch_port_setup_tc, 1431 }; 1432 1433 bool dpaa2_switch_port_dev_check(const struct net_device *netdev) 1434 { 1435 return netdev->netdev_ops == &dpaa2_switch_port_ops; 1436 } 1437 1438 static int dpaa2_switch_port_connect_mac(struct ethsw_port_priv *port_priv) 1439 { 1440 struct fsl_mc_device *dpsw_port_dev, *dpmac_dev; 1441 struct dpaa2_mac *mac; 1442 int err; 1443 1444 dpsw_port_dev = to_fsl_mc_device(port_priv->netdev->dev.parent); 1445 dpmac_dev = fsl_mc_get_endpoint(dpsw_port_dev, port_priv->idx); 1446 1447 if (PTR_ERR(dpmac_dev) == -EPROBE_DEFER) 1448 return PTR_ERR(dpmac_dev); 1449 1450 if (IS_ERR(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type) 1451 return 0; 1452 1453 mac = kzalloc(sizeof(*mac), GFP_KERNEL); 1454 if (!mac) 1455 return -ENOMEM; 1456 1457 mac->mc_dev = dpmac_dev; 1458 mac->mc_io = port_priv->ethsw_data->mc_io; 1459 mac->net_dev = port_priv->netdev; 1460 1461 err = dpaa2_mac_open(mac); 1462 if (err) 1463 goto err_free_mac; 1464 1465 if (dpaa2_mac_is_type_phy(mac)) { 1466 err = dpaa2_mac_connect(mac); 1467 if (err) { 1468 netdev_err(port_priv->netdev, 1469 "Error connecting to the MAC endpoint %pe\n", 1470 ERR_PTR(err)); 1471 goto err_close_mac; 1472 } 1473 } 1474 1475 mutex_lock(&port_priv->mac_lock); 1476 port_priv->mac = mac; 1477 mutex_unlock(&port_priv->mac_lock); 1478 1479 return 0; 1480 1481 err_close_mac: 1482 dpaa2_mac_close(mac); 1483 err_free_mac: 1484 kfree(mac); 1485 return err; 1486 } 1487 1488 static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv) 1489 { 1490 struct dpaa2_mac *mac; 1491 1492 mutex_lock(&port_priv->mac_lock); 1493 mac = port_priv->mac; 1494 port_priv->mac = NULL; 1495 mutex_unlock(&port_priv->mac_lock); 1496 1497 if (!mac) 1498 return; 1499 1500 if (dpaa2_mac_is_type_phy(mac)) 1501 dpaa2_mac_disconnect(mac); 1502 1503 dpaa2_mac_close(mac); 1504 kfree(mac); 1505 } 1506 1507 static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg) 1508 { 1509 struct device *dev = (struct device *)arg; 1510 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1511 struct ethsw_port_priv *port_priv; 1512 int err, if_id; 1513 bool had_mac; 1514 u32 status; 1515 1516 err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, 1517 DPSW_IRQ_INDEX_IF, &status); 1518 if (err) { 1519 dev_err(dev, "Can't get irq status (err %d)\n", err); 1520 goto out; 1521 } 1522 1523 if_id = (status & 0xFFFF0000) >> 16; 1524 port_priv = ethsw->ports[if_id]; 1525 1526 if (status & DPSW_IRQ_EVENT_LINK_CHANGED) 1527 dpaa2_switch_port_link_state_update(port_priv->netdev); 1528 1529 if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) { 1530 dpaa2_switch_port_set_mac_addr(port_priv); 1531 /* We can avoid locking because the "endpoint changed" IRQ 1532 * handler is the only one who changes priv->mac at runtime, 1533 * so we are not racing with anyone. 1534 */ 1535 had_mac = !!port_priv->mac; 1536 if (had_mac) 1537 dpaa2_switch_port_disconnect_mac(port_priv); 1538 else 1539 dpaa2_switch_port_connect_mac(port_priv); 1540 } 1541 1542 err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, 1543 DPSW_IRQ_INDEX_IF, status); 1544 if (err) 1545 dev_err(dev, "Can't clear irq status (err %d)\n", err); 1546 1547 out: 1548 return IRQ_HANDLED; 1549 } 1550 1551 static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev) 1552 { 1553 u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED | DPSW_IRQ_EVENT_ENDPOINT_CHANGED; 1554 struct device *dev = &sw_dev->dev; 1555 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1556 struct fsl_mc_device_irq *irq; 1557 int err; 1558 1559 err = fsl_mc_allocate_irqs(sw_dev); 1560 if (err) { 1561 dev_err(dev, "MC irqs allocation failed\n"); 1562 return err; 1563 } 1564 1565 if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) { 1566 err = -EINVAL; 1567 goto free_irq; 1568 } 1569 1570 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1571 DPSW_IRQ_INDEX_IF, 0); 1572 if (err) { 1573 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1574 goto free_irq; 1575 } 1576 1577 irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF]; 1578 1579 err = devm_request_threaded_irq(dev, irq->virq, NULL, 1580 dpaa2_switch_irq0_handler_thread, 1581 IRQF_NO_SUSPEND | IRQF_ONESHOT, 1582 dev_name(dev), dev); 1583 if (err) { 1584 dev_err(dev, "devm_request_threaded_irq(): %d\n", err); 1585 goto free_irq; 1586 } 1587 1588 err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle, 1589 DPSW_IRQ_INDEX_IF, mask); 1590 if (err) { 1591 dev_err(dev, "dpsw_set_irq_mask(): %d\n", err); 1592 goto free_devm_irq; 1593 } 1594 1595 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1596 DPSW_IRQ_INDEX_IF, 1); 1597 if (err) { 1598 dev_err(dev, "dpsw_set_irq_enable(): %d\n", err); 1599 goto free_devm_irq; 1600 } 1601 1602 return 0; 1603 1604 free_devm_irq: 1605 devm_free_irq(dev, irq->virq, dev); 1606 free_irq: 1607 fsl_mc_free_irqs(sw_dev); 1608 return err; 1609 } 1610 1611 static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev) 1612 { 1613 struct device *dev = &sw_dev->dev; 1614 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1615 int err; 1616 1617 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1618 DPSW_IRQ_INDEX_IF, 0); 1619 if (err) 1620 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1621 1622 fsl_mc_free_irqs(sw_dev); 1623 } 1624 1625 static int dpaa2_switch_port_set_learning(struct ethsw_port_priv *port_priv, bool enable) 1626 { 1627 struct ethsw_core *ethsw = port_priv->ethsw_data; 1628 enum dpsw_learning_mode learn_mode; 1629 int err; 1630 1631 if (enable) 1632 learn_mode = DPSW_LEARNING_MODE_HW; 1633 else 1634 learn_mode = DPSW_LEARNING_MODE_DIS; 1635 1636 err = dpsw_if_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 1637 port_priv->idx, learn_mode); 1638 if (err) 1639 netdev_err(port_priv->netdev, "dpsw_if_set_learning_mode err %d\n", err); 1640 1641 if (!enable) 1642 dpaa2_switch_port_fast_age(port_priv); 1643 1644 return err; 1645 } 1646 1647 static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev, 1648 u8 state) 1649 { 1650 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1651 int err; 1652 1653 err = dpaa2_switch_port_set_stp_state(port_priv, state); 1654 if (err) 1655 return err; 1656 1657 switch (state) { 1658 case BR_STATE_DISABLED: 1659 case BR_STATE_BLOCKING: 1660 case BR_STATE_LISTENING: 1661 err = dpaa2_switch_port_set_learning(port_priv, false); 1662 break; 1663 case BR_STATE_LEARNING: 1664 case BR_STATE_FORWARDING: 1665 err = dpaa2_switch_port_set_learning(port_priv, 1666 port_priv->learn_ena); 1667 break; 1668 } 1669 1670 return err; 1671 } 1672 1673 static int dpaa2_switch_port_flood(struct ethsw_port_priv *port_priv, 1674 struct switchdev_brport_flags flags) 1675 { 1676 struct ethsw_core *ethsw = port_priv->ethsw_data; 1677 1678 if (flags.mask & BR_BCAST_FLOOD) 1679 port_priv->bcast_flood = !!(flags.val & BR_BCAST_FLOOD); 1680 1681 if (flags.mask & BR_FLOOD) 1682 port_priv->ucast_flood = !!(flags.val & BR_FLOOD); 1683 1684 return dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 1685 } 1686 1687 static int dpaa2_switch_port_pre_bridge_flags(struct net_device *netdev, 1688 struct switchdev_brport_flags flags, 1689 struct netlink_ext_ack *extack) 1690 { 1691 if (flags.mask & ~(BR_LEARNING | BR_BCAST_FLOOD | BR_FLOOD | 1692 BR_MCAST_FLOOD)) 1693 return -EINVAL; 1694 1695 if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD)) { 1696 bool multicast = !!(flags.val & BR_MCAST_FLOOD); 1697 bool unicast = !!(flags.val & BR_FLOOD); 1698 1699 if (unicast != multicast) { 1700 NL_SET_ERR_MSG_MOD(extack, 1701 "Cannot configure multicast flooding independently of unicast"); 1702 return -EINVAL; 1703 } 1704 } 1705 1706 return 0; 1707 } 1708 1709 static int dpaa2_switch_port_bridge_flags(struct net_device *netdev, 1710 struct switchdev_brport_flags flags, 1711 struct netlink_ext_ack *extack) 1712 { 1713 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1714 int err; 1715 1716 if (flags.mask & BR_LEARNING) { 1717 bool learn_ena = !!(flags.val & BR_LEARNING); 1718 1719 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 1720 if (err) 1721 return err; 1722 port_priv->learn_ena = learn_ena; 1723 } 1724 1725 if (flags.mask & (BR_BCAST_FLOOD | BR_FLOOD | BR_MCAST_FLOOD)) { 1726 err = dpaa2_switch_port_flood(port_priv, flags); 1727 if (err) 1728 return err; 1729 } 1730 1731 return 0; 1732 } 1733 1734 static int dpaa2_switch_port_attr_set(struct net_device *netdev, const void *ctx, 1735 const struct switchdev_attr *attr, 1736 struct netlink_ext_ack *extack) 1737 { 1738 int err = 0; 1739 1740 switch (attr->id) { 1741 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 1742 err = dpaa2_switch_port_attr_stp_state_set(netdev, 1743 attr->u.stp_state); 1744 break; 1745 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 1746 if (!attr->u.vlan_filtering) { 1747 NL_SET_ERR_MSG_MOD(extack, 1748 "The DPAA2 switch does not support VLAN-unaware operation"); 1749 return -EOPNOTSUPP; 1750 } 1751 break; 1752 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: 1753 err = dpaa2_switch_port_pre_bridge_flags(netdev, attr->u.brport_flags, extack); 1754 break; 1755 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 1756 err = dpaa2_switch_port_bridge_flags(netdev, attr->u.brport_flags, extack); 1757 break; 1758 default: 1759 err = -EOPNOTSUPP; 1760 break; 1761 } 1762 1763 return err; 1764 } 1765 1766 int dpaa2_switch_port_vlans_add(struct net_device *netdev, 1767 const struct switchdev_obj_port_vlan *vlan) 1768 { 1769 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1770 struct ethsw_core *ethsw = port_priv->ethsw_data; 1771 struct dpsw_attr *attr = ðsw->sw_attr; 1772 int err = 0; 1773 1774 /* Make sure that the VLAN is not already configured 1775 * on the switch port 1776 */ 1777 if (port_priv->vlans[vlan->vid] & ETHSW_VLAN_MEMBER) { 1778 netdev_err(netdev, "VLAN %d already configured\n", vlan->vid); 1779 return -EEXIST; 1780 } 1781 1782 /* Check if there is space for a new VLAN */ 1783 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1784 ðsw->sw_attr); 1785 if (err) { 1786 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1787 return err; 1788 } 1789 if (attr->max_vlans - attr->num_vlans < 1) 1790 return -ENOSPC; 1791 1792 /* Check if there is space for a new VLAN */ 1793 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1794 ðsw->sw_attr); 1795 if (err) { 1796 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1797 return err; 1798 } 1799 if (attr->max_vlans - attr->num_vlans < 1) 1800 return -ENOSPC; 1801 1802 if (!port_priv->ethsw_data->vlans[vlan->vid]) { 1803 /* this is a new VLAN */ 1804 err = dpaa2_switch_add_vlan(port_priv, vlan->vid); 1805 if (err) 1806 return err; 1807 1808 port_priv->ethsw_data->vlans[vlan->vid] |= ETHSW_VLAN_GLOBAL; 1809 } 1810 1811 return dpaa2_switch_port_add_vlan(port_priv, vlan->vid, vlan->flags); 1812 } 1813 1814 static int dpaa2_switch_port_lookup_address(struct net_device *netdev, int is_uc, 1815 const unsigned char *addr) 1816 { 1817 struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc; 1818 struct netdev_hw_addr *ha; 1819 1820 netif_addr_lock_bh(netdev); 1821 list_for_each_entry(ha, &list->list, list) { 1822 if (ether_addr_equal(ha->addr, addr)) { 1823 netif_addr_unlock_bh(netdev); 1824 return 1; 1825 } 1826 } 1827 netif_addr_unlock_bh(netdev); 1828 return 0; 1829 } 1830 1831 static int dpaa2_switch_port_mdb_add(struct net_device *netdev, 1832 const struct switchdev_obj_port_mdb *mdb) 1833 { 1834 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1835 int err; 1836 1837 /* Check if address is already set on this port */ 1838 if (dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1839 return -EEXIST; 1840 1841 err = dpaa2_switch_port_fdb_add_mc(port_priv, mdb->addr); 1842 if (err) 1843 return err; 1844 1845 err = dev_mc_add(netdev, mdb->addr); 1846 if (err) { 1847 netdev_err(netdev, "dev_mc_add err %d\n", err); 1848 dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1849 } 1850 1851 return err; 1852 } 1853 1854 static int dpaa2_switch_port_obj_add(struct net_device *netdev, 1855 const struct switchdev_obj *obj) 1856 { 1857 int err; 1858 1859 switch (obj->id) { 1860 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1861 err = dpaa2_switch_port_vlans_add(netdev, 1862 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1863 break; 1864 case SWITCHDEV_OBJ_ID_PORT_MDB: 1865 err = dpaa2_switch_port_mdb_add(netdev, 1866 SWITCHDEV_OBJ_PORT_MDB(obj)); 1867 break; 1868 default: 1869 err = -EOPNOTSUPP; 1870 break; 1871 } 1872 1873 return err; 1874 } 1875 1876 static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid) 1877 { 1878 struct ethsw_core *ethsw = port_priv->ethsw_data; 1879 struct net_device *netdev = port_priv->netdev; 1880 struct dpsw_vlan_if_cfg vcfg; 1881 int i, err; 1882 1883 if (!port_priv->vlans[vid]) 1884 return -ENOENT; 1885 1886 if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) { 1887 /* If we are deleting the PVID of a port, use VLAN 4095 instead 1888 * as we are sure that neither the bridge nor the 8021q module 1889 * will use it 1890 */ 1891 err = dpaa2_switch_port_set_pvid(port_priv, 4095); 1892 if (err) 1893 return err; 1894 } 1895 1896 vcfg.num_ifs = 1; 1897 vcfg.if_id[0] = port_priv->idx; 1898 if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) { 1899 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, 1900 ethsw->dpsw_handle, 1901 vid, &vcfg); 1902 if (err) { 1903 netdev_err(netdev, 1904 "dpsw_vlan_remove_if_untagged err %d\n", 1905 err); 1906 } 1907 port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED; 1908 } 1909 1910 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { 1911 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1912 vid, &vcfg); 1913 if (err) { 1914 netdev_err(netdev, 1915 "dpsw_vlan_remove_if err %d\n", err); 1916 return err; 1917 } 1918 port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER; 1919 1920 /* Delete VLAN from switch if it is no longer configured on 1921 * any port 1922 */ 1923 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 1924 if (ethsw->ports[i] && 1925 ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER) 1926 return 0; /* Found a port member in VID */ 1927 } 1928 1929 ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL; 1930 1931 err = dpaa2_switch_dellink(ethsw, vid); 1932 if (err) 1933 return err; 1934 } 1935 1936 return 0; 1937 } 1938 1939 int dpaa2_switch_port_vlans_del(struct net_device *netdev, 1940 const struct switchdev_obj_port_vlan *vlan) 1941 { 1942 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1943 1944 if (netif_is_bridge_master(vlan->obj.orig_dev)) 1945 return -EOPNOTSUPP; 1946 1947 return dpaa2_switch_port_del_vlan(port_priv, vlan->vid); 1948 } 1949 1950 static int dpaa2_switch_port_mdb_del(struct net_device *netdev, 1951 const struct switchdev_obj_port_mdb *mdb) 1952 { 1953 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1954 int err; 1955 1956 if (!dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1957 return -ENOENT; 1958 1959 err = dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1960 if (err) 1961 return err; 1962 1963 err = dev_mc_del(netdev, mdb->addr); 1964 if (err) { 1965 netdev_err(netdev, "dev_mc_del err %d\n", err); 1966 return err; 1967 } 1968 1969 return err; 1970 } 1971 1972 static int dpaa2_switch_port_obj_del(struct net_device *netdev, 1973 const struct switchdev_obj *obj) 1974 { 1975 int err; 1976 1977 switch (obj->id) { 1978 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1979 err = dpaa2_switch_port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj)); 1980 break; 1981 case SWITCHDEV_OBJ_ID_PORT_MDB: 1982 err = dpaa2_switch_port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj)); 1983 break; 1984 default: 1985 err = -EOPNOTSUPP; 1986 break; 1987 } 1988 return err; 1989 } 1990 1991 static int dpaa2_switch_port_attr_set_event(struct net_device *netdev, 1992 struct switchdev_notifier_port_attr_info *ptr) 1993 { 1994 int err; 1995 1996 err = switchdev_handle_port_attr_set(netdev, ptr, 1997 dpaa2_switch_port_dev_check, 1998 dpaa2_switch_port_attr_set); 1999 return notifier_from_errno(err); 2000 } 2001 2002 static int dpaa2_switch_port_bridge_join(struct net_device *netdev, 2003 struct net_device *upper_dev, 2004 struct netlink_ext_ack *extack) 2005 { 2006 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2007 struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; 2008 struct ethsw_core *ethsw = port_priv->ethsw_data; 2009 bool learn_ena; 2010 int err; 2011 2012 /* Delete the previously manually installed VLAN 1 */ 2013 err = dpaa2_switch_port_del_vlan(port_priv, 1); 2014 if (err) 2015 return err; 2016 2017 dpaa2_switch_port_set_fdb(port_priv, upper_dev); 2018 2019 /* Inherit the initial bridge port learning state */ 2020 learn_ena = br_port_flag_is_set(netdev, BR_LEARNING); 2021 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 2022 port_priv->learn_ena = learn_ena; 2023 2024 /* Setup the egress flood policy (broadcast, unknown unicast) */ 2025 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2026 if (err) 2027 goto err_egress_flood; 2028 2029 /* Recreate the egress flood domain of the FDB that we just left. */ 2030 err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id); 2031 if (err) 2032 goto err_egress_flood; 2033 2034 err = switchdev_bridge_port_offload(netdev, netdev, NULL, 2035 NULL, NULL, false, extack); 2036 if (err) 2037 goto err_switchdev_offload; 2038 2039 return 0; 2040 2041 err_switchdev_offload: 2042 err_egress_flood: 2043 dpaa2_switch_port_set_fdb(port_priv, NULL); 2044 return err; 2045 } 2046 2047 static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg) 2048 { 2049 __be16 vlan_proto = htons(ETH_P_8021Q); 2050 2051 if (vdev) 2052 vlan_proto = vlan_dev_vlan_proto(vdev); 2053 2054 return dpaa2_switch_port_vlan_kill(arg, vlan_proto, vid); 2055 } 2056 2057 static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg) 2058 { 2059 __be16 vlan_proto = htons(ETH_P_8021Q); 2060 2061 if (vdev) 2062 vlan_proto = vlan_dev_vlan_proto(vdev); 2063 2064 return dpaa2_switch_port_vlan_add(arg, vlan_proto, vid); 2065 } 2066 2067 static void dpaa2_switch_port_pre_bridge_leave(struct net_device *netdev) 2068 { 2069 switchdev_bridge_port_unoffload(netdev, NULL, NULL, NULL); 2070 } 2071 2072 static int dpaa2_switch_port_bridge_leave(struct net_device *netdev) 2073 { 2074 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2075 struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; 2076 struct ethsw_core *ethsw = port_priv->ethsw_data; 2077 int err; 2078 2079 /* First of all, fast age any learn FDB addresses on this switch port */ 2080 dpaa2_switch_port_fast_age(port_priv); 2081 2082 /* Clear all RX VLANs installed through vlan_vid_add() either as VLAN 2083 * upper devices or otherwise from the FDB table that we are about to 2084 * leave 2085 */ 2086 err = vlan_for_each(netdev, dpaa2_switch_port_clear_rxvlan, netdev); 2087 if (err) 2088 netdev_err(netdev, "Unable to clear RX VLANs from old FDB table, err (%d)\n", err); 2089 2090 dpaa2_switch_port_set_fdb(port_priv, NULL); 2091 2092 /* Restore all RX VLANs into the new FDB table that we just joined */ 2093 err = vlan_for_each(netdev, dpaa2_switch_port_restore_rxvlan, netdev); 2094 if (err) 2095 netdev_err(netdev, "Unable to restore RX VLANs to the new FDB, err (%d)\n", err); 2096 2097 /* Reset the flooding state to denote that this port can send any 2098 * packet in standalone mode. With this, we are also ensuring that any 2099 * later bridge join will have the flooding flag on. 2100 */ 2101 port_priv->bcast_flood = true; 2102 port_priv->ucast_flood = true; 2103 2104 /* Setup the egress flood policy (broadcast, unknown unicast). 2105 * When the port is not under a bridge, only the CTRL interface is part 2106 * of the flooding domain besides the actual port 2107 */ 2108 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2109 if (err) 2110 return err; 2111 2112 /* Recreate the egress flood domain of the FDB that we just left */ 2113 err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id); 2114 if (err) 2115 return err; 2116 2117 /* No HW learning when not under a bridge */ 2118 err = dpaa2_switch_port_set_learning(port_priv, false); 2119 if (err) 2120 return err; 2121 port_priv->learn_ena = false; 2122 2123 /* Add the VLAN 1 as PVID when not under a bridge. We need this since 2124 * the dpaa2 switch interfaces are not capable to be VLAN unaware 2125 */ 2126 return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID, 2127 BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID); 2128 } 2129 2130 static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev) 2131 { 2132 struct net_device *upper_dev; 2133 struct list_head *iter; 2134 2135 /* RCU read lock not necessary because we have write-side protection 2136 * (rtnl_mutex), however a non-rcu iterator does not exist. 2137 */ 2138 netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter) 2139 if (is_vlan_dev(upper_dev)) 2140 return -EOPNOTSUPP; 2141 2142 return 0; 2143 } 2144 2145 static int 2146 dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev, 2147 struct net_device *upper_dev, 2148 struct netlink_ext_ack *extack) 2149 { 2150 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2151 struct ethsw_port_priv *other_port_priv; 2152 struct net_device *other_dev; 2153 struct list_head *iter; 2154 int err; 2155 2156 if (!br_vlan_enabled(upper_dev)) { 2157 NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge"); 2158 return -EOPNOTSUPP; 2159 } 2160 2161 err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev); 2162 if (err) { 2163 NL_SET_ERR_MSG_MOD(extack, 2164 "Cannot join a bridge while VLAN uppers are present"); 2165 return 0; 2166 } 2167 2168 netdev_for_each_lower_dev(upper_dev, other_dev, iter) { 2169 if (!dpaa2_switch_port_dev_check(other_dev)) 2170 continue; 2171 2172 other_port_priv = netdev_priv(other_dev); 2173 if (other_port_priv->ethsw_data != port_priv->ethsw_data) { 2174 NL_SET_ERR_MSG_MOD(extack, 2175 "Interface from a different DPSW is in the bridge already"); 2176 return -EINVAL; 2177 } 2178 } 2179 2180 return 0; 2181 } 2182 2183 static int dpaa2_switch_port_prechangeupper(struct net_device *netdev, 2184 struct netdev_notifier_changeupper_info *info) 2185 { 2186 struct netlink_ext_ack *extack; 2187 struct net_device *upper_dev; 2188 int err; 2189 2190 if (!dpaa2_switch_port_dev_check(netdev)) 2191 return 0; 2192 2193 extack = netdev_notifier_info_to_extack(&info->info); 2194 upper_dev = info->upper_dev; 2195 if (netif_is_bridge_master(upper_dev)) { 2196 err = dpaa2_switch_prechangeupper_sanity_checks(netdev, 2197 upper_dev, 2198 extack); 2199 if (err) 2200 return err; 2201 2202 if (!info->linking) 2203 dpaa2_switch_port_pre_bridge_leave(netdev); 2204 } 2205 2206 return 0; 2207 } 2208 2209 static int dpaa2_switch_port_changeupper(struct net_device *netdev, 2210 struct netdev_notifier_changeupper_info *info) 2211 { 2212 struct netlink_ext_ack *extack; 2213 struct net_device *upper_dev; 2214 2215 if (!dpaa2_switch_port_dev_check(netdev)) 2216 return 0; 2217 2218 extack = netdev_notifier_info_to_extack(&info->info); 2219 2220 upper_dev = info->upper_dev; 2221 if (netif_is_bridge_master(upper_dev)) { 2222 if (info->linking) 2223 return dpaa2_switch_port_bridge_join(netdev, 2224 upper_dev, 2225 extack); 2226 else 2227 return dpaa2_switch_port_bridge_leave(netdev); 2228 } 2229 2230 return 0; 2231 } 2232 2233 static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, 2234 unsigned long event, void *ptr) 2235 { 2236 struct net_device *netdev = netdev_notifier_info_to_dev(ptr); 2237 int err = 0; 2238 2239 switch (event) { 2240 case NETDEV_PRECHANGEUPPER: 2241 err = dpaa2_switch_port_prechangeupper(netdev, ptr); 2242 if (err) 2243 return notifier_from_errno(err); 2244 2245 break; 2246 case NETDEV_CHANGEUPPER: 2247 err = dpaa2_switch_port_changeupper(netdev, ptr); 2248 if (err) 2249 return notifier_from_errno(err); 2250 2251 break; 2252 } 2253 2254 return NOTIFY_DONE; 2255 } 2256 2257 struct ethsw_switchdev_event_work { 2258 struct work_struct work; 2259 struct switchdev_notifier_fdb_info fdb_info; 2260 struct net_device *dev; 2261 unsigned long event; 2262 }; 2263 2264 static void dpaa2_switch_event_work(struct work_struct *work) 2265 { 2266 struct ethsw_switchdev_event_work *switchdev_work = 2267 container_of(work, struct ethsw_switchdev_event_work, work); 2268 struct net_device *dev = switchdev_work->dev; 2269 struct switchdev_notifier_fdb_info *fdb_info; 2270 int err; 2271 2272 rtnl_lock(); 2273 fdb_info = &switchdev_work->fdb_info; 2274 2275 switch (switchdev_work->event) { 2276 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2277 if (!fdb_info->added_by_user || fdb_info->is_local) 2278 break; 2279 if (is_unicast_ether_addr(fdb_info->addr)) 2280 err = dpaa2_switch_port_fdb_add_uc(netdev_priv(dev), 2281 fdb_info->addr); 2282 else 2283 err = dpaa2_switch_port_fdb_add_mc(netdev_priv(dev), 2284 fdb_info->addr); 2285 if (err) 2286 break; 2287 fdb_info->offloaded = true; 2288 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, 2289 &fdb_info->info, NULL); 2290 break; 2291 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2292 if (!fdb_info->added_by_user || fdb_info->is_local) 2293 break; 2294 if (is_unicast_ether_addr(fdb_info->addr)) 2295 dpaa2_switch_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr); 2296 else 2297 dpaa2_switch_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr); 2298 break; 2299 } 2300 2301 rtnl_unlock(); 2302 kfree(switchdev_work->fdb_info.addr); 2303 kfree(switchdev_work); 2304 dev_put(dev); 2305 } 2306 2307 /* Called under rcu_read_lock() */ 2308 static int dpaa2_switch_port_event(struct notifier_block *nb, 2309 unsigned long event, void *ptr) 2310 { 2311 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2312 struct ethsw_port_priv *port_priv = netdev_priv(dev); 2313 struct ethsw_switchdev_event_work *switchdev_work; 2314 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2315 struct ethsw_core *ethsw = port_priv->ethsw_data; 2316 2317 if (event == SWITCHDEV_PORT_ATTR_SET) 2318 return dpaa2_switch_port_attr_set_event(dev, ptr); 2319 2320 if (!dpaa2_switch_port_dev_check(dev)) 2321 return NOTIFY_DONE; 2322 2323 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2324 if (!switchdev_work) 2325 return NOTIFY_BAD; 2326 2327 INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work); 2328 switchdev_work->dev = dev; 2329 switchdev_work->event = event; 2330 2331 switch (event) { 2332 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2333 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2334 memcpy(&switchdev_work->fdb_info, ptr, 2335 sizeof(switchdev_work->fdb_info)); 2336 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2337 if (!switchdev_work->fdb_info.addr) 2338 goto err_addr_alloc; 2339 2340 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2341 fdb_info->addr); 2342 2343 /* Take a reference on the device to avoid being freed. */ 2344 dev_hold(dev); 2345 break; 2346 default: 2347 kfree(switchdev_work); 2348 return NOTIFY_DONE; 2349 } 2350 2351 queue_work(ethsw->workqueue, &switchdev_work->work); 2352 2353 return NOTIFY_DONE; 2354 2355 err_addr_alloc: 2356 kfree(switchdev_work); 2357 return NOTIFY_BAD; 2358 } 2359 2360 static int dpaa2_switch_port_obj_event(unsigned long event, 2361 struct net_device *netdev, 2362 struct switchdev_notifier_port_obj_info *port_obj_info) 2363 { 2364 int err = -EOPNOTSUPP; 2365 2366 if (!dpaa2_switch_port_dev_check(netdev)) 2367 return NOTIFY_DONE; 2368 2369 switch (event) { 2370 case SWITCHDEV_PORT_OBJ_ADD: 2371 err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj); 2372 break; 2373 case SWITCHDEV_PORT_OBJ_DEL: 2374 err = dpaa2_switch_port_obj_del(netdev, port_obj_info->obj); 2375 break; 2376 } 2377 2378 port_obj_info->handled = true; 2379 return notifier_from_errno(err); 2380 } 2381 2382 static int dpaa2_switch_port_blocking_event(struct notifier_block *nb, 2383 unsigned long event, void *ptr) 2384 { 2385 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2386 2387 switch (event) { 2388 case SWITCHDEV_PORT_OBJ_ADD: 2389 case SWITCHDEV_PORT_OBJ_DEL: 2390 return dpaa2_switch_port_obj_event(event, dev, ptr); 2391 case SWITCHDEV_PORT_ATTR_SET: 2392 return dpaa2_switch_port_attr_set_event(dev, ptr); 2393 } 2394 2395 return NOTIFY_DONE; 2396 } 2397 2398 /* Build a linear skb based on a single-buffer frame descriptor */ 2399 static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw, 2400 const struct dpaa2_fd *fd) 2401 { 2402 u16 fd_offset = dpaa2_fd_get_offset(fd); 2403 dma_addr_t addr = dpaa2_fd_get_addr(fd); 2404 u32 fd_length = dpaa2_fd_get_len(fd); 2405 struct device *dev = ethsw->dev; 2406 struct sk_buff *skb = NULL; 2407 void *fd_vaddr; 2408 2409 fd_vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, addr); 2410 dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE, 2411 DMA_FROM_DEVICE); 2412 2413 skb = build_skb(fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE + 2414 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); 2415 if (unlikely(!skb)) { 2416 dev_err(dev, "build_skb() failed\n"); 2417 return NULL; 2418 } 2419 2420 skb_reserve(skb, fd_offset); 2421 skb_put(skb, fd_length); 2422 2423 ethsw->buf_count--; 2424 2425 return skb; 2426 } 2427 2428 static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq, 2429 const struct dpaa2_fd *fd) 2430 { 2431 dpaa2_switch_free_fd(fq->ethsw, fd); 2432 } 2433 2434 static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq, 2435 const struct dpaa2_fd *fd) 2436 { 2437 struct ethsw_core *ethsw = fq->ethsw; 2438 struct ethsw_port_priv *port_priv; 2439 struct net_device *netdev; 2440 struct vlan_ethhdr *hdr; 2441 struct sk_buff *skb; 2442 u16 vlan_tci, vid; 2443 int if_id, err; 2444 2445 /* get switch ingress interface ID */ 2446 if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF; 2447 2448 if (if_id >= ethsw->sw_attr.num_ifs) { 2449 dev_err(ethsw->dev, "Frame received from unknown interface!\n"); 2450 goto err_free_fd; 2451 } 2452 port_priv = ethsw->ports[if_id]; 2453 netdev = port_priv->netdev; 2454 2455 /* build the SKB based on the FD received */ 2456 if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) { 2457 if (net_ratelimit()) { 2458 netdev_err(netdev, "Received invalid frame format\n"); 2459 goto err_free_fd; 2460 } 2461 } 2462 2463 skb = dpaa2_switch_build_linear_skb(ethsw, fd); 2464 if (unlikely(!skb)) 2465 goto err_free_fd; 2466 2467 skb_reset_mac_header(skb); 2468 2469 /* Remove the VLAN header if the packet that we just received has a vid 2470 * equal to the port PVIDs. Since the dpaa2-switch can operate only in 2471 * VLAN-aware mode and no alterations are made on the packet when it's 2472 * redirected/mirrored to the control interface, we are sure that there 2473 * will always be a VLAN header present. 2474 */ 2475 hdr = vlan_eth_hdr(skb); 2476 vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK; 2477 if (vid == port_priv->pvid) { 2478 err = __skb_vlan_pop(skb, &vlan_tci); 2479 if (err) { 2480 dev_info(ethsw->dev, "__skb_vlan_pop() returned %d", err); 2481 goto err_free_fd; 2482 } 2483 } 2484 2485 skb->dev = netdev; 2486 skb->protocol = eth_type_trans(skb, skb->dev); 2487 2488 /* Setup the offload_fwd_mark only if the port is under a bridge */ 2489 skb->offload_fwd_mark = !!(port_priv->fdb->bridge_dev); 2490 2491 netif_receive_skb(skb); 2492 2493 return; 2494 2495 err_free_fd: 2496 dpaa2_switch_free_fd(ethsw, fd); 2497 } 2498 2499 static void dpaa2_switch_detect_features(struct ethsw_core *ethsw) 2500 { 2501 ethsw->features = 0; 2502 2503 if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6)) 2504 ethsw->features |= ETHSW_FEATURE_MAC_ADDR; 2505 } 2506 2507 static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw) 2508 { 2509 struct dpsw_ctrl_if_attr ctrl_if_attr; 2510 struct device *dev = ethsw->dev; 2511 int i = 0; 2512 int err; 2513 2514 err = dpsw_ctrl_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 2515 &ctrl_if_attr); 2516 if (err) { 2517 dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n", err); 2518 return err; 2519 } 2520 2521 ethsw->fq[i].fqid = ctrl_if_attr.rx_fqid; 2522 ethsw->fq[i].ethsw = ethsw; 2523 ethsw->fq[i++].type = DPSW_QUEUE_RX; 2524 2525 ethsw->fq[i].fqid = ctrl_if_attr.tx_err_conf_fqid; 2526 ethsw->fq[i].ethsw = ethsw; 2527 ethsw->fq[i++].type = DPSW_QUEUE_TX_ERR_CONF; 2528 2529 return 0; 2530 } 2531 2532 /* Free buffers acquired from the buffer pool or which were meant to 2533 * be released in the pool 2534 */ 2535 static void dpaa2_switch_free_bufs(struct ethsw_core *ethsw, u64 *buf_array, int count) 2536 { 2537 struct device *dev = ethsw->dev; 2538 void *vaddr; 2539 int i; 2540 2541 for (i = 0; i < count; i++) { 2542 vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, buf_array[i]); 2543 dma_unmap_page(dev, buf_array[i], DPAA2_SWITCH_RX_BUF_SIZE, 2544 DMA_FROM_DEVICE); 2545 free_pages((unsigned long)vaddr, 0); 2546 } 2547 } 2548 2549 /* Perform a single release command to add buffers 2550 * to the specified buffer pool 2551 */ 2552 static int dpaa2_switch_add_bufs(struct ethsw_core *ethsw, u16 bpid) 2553 { 2554 struct device *dev = ethsw->dev; 2555 u64 buf_array[BUFS_PER_CMD]; 2556 struct page *page; 2557 int retries = 0; 2558 dma_addr_t addr; 2559 int err; 2560 int i; 2561 2562 for (i = 0; i < BUFS_PER_CMD; i++) { 2563 /* Allocate one page for each Rx buffer. WRIOP sees 2564 * the entire page except for a tailroom reserved for 2565 * skb shared info 2566 */ 2567 page = dev_alloc_pages(0); 2568 if (!page) { 2569 dev_err(dev, "buffer allocation failed\n"); 2570 goto err_alloc; 2571 } 2572 2573 addr = dma_map_page(dev, page, 0, DPAA2_SWITCH_RX_BUF_SIZE, 2574 DMA_FROM_DEVICE); 2575 if (dma_mapping_error(dev, addr)) { 2576 dev_err(dev, "dma_map_single() failed\n"); 2577 goto err_map; 2578 } 2579 buf_array[i] = addr; 2580 } 2581 2582 release_bufs: 2583 /* In case the portal is busy, retry until successful or 2584 * max retries hit. 2585 */ 2586 while ((err = dpaa2_io_service_release(NULL, bpid, 2587 buf_array, i)) == -EBUSY) { 2588 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) 2589 break; 2590 2591 cpu_relax(); 2592 } 2593 2594 /* If release command failed, clean up and bail out. */ 2595 if (err) { 2596 dpaa2_switch_free_bufs(ethsw, buf_array, i); 2597 return 0; 2598 } 2599 2600 return i; 2601 2602 err_map: 2603 __free_pages(page, 0); 2604 err_alloc: 2605 /* If we managed to allocate at least some buffers, 2606 * release them to hardware 2607 */ 2608 if (i) 2609 goto release_bufs; 2610 2611 return 0; 2612 } 2613 2614 static int dpaa2_switch_refill_bp(struct ethsw_core *ethsw) 2615 { 2616 int *count = ðsw->buf_count; 2617 int new_count; 2618 int err = 0; 2619 2620 if (unlikely(*count < DPAA2_ETHSW_REFILL_THRESH)) { 2621 do { 2622 new_count = dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2623 if (unlikely(!new_count)) { 2624 /* Out of memory; abort for now, we'll 2625 * try later on 2626 */ 2627 break; 2628 } 2629 *count += new_count; 2630 } while (*count < DPAA2_ETHSW_NUM_BUFS); 2631 2632 if (unlikely(*count < DPAA2_ETHSW_NUM_BUFS)) 2633 err = -ENOMEM; 2634 } 2635 2636 return err; 2637 } 2638 2639 static int dpaa2_switch_seed_bp(struct ethsw_core *ethsw) 2640 { 2641 int *count, i; 2642 2643 for (i = 0; i < DPAA2_ETHSW_NUM_BUFS; i += BUFS_PER_CMD) { 2644 count = ðsw->buf_count; 2645 *count += dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2646 2647 if (unlikely(*count < BUFS_PER_CMD)) 2648 return -ENOMEM; 2649 } 2650 2651 return 0; 2652 } 2653 2654 static void dpaa2_switch_drain_bp(struct ethsw_core *ethsw) 2655 { 2656 u64 buf_array[BUFS_PER_CMD]; 2657 int ret; 2658 2659 do { 2660 ret = dpaa2_io_service_acquire(NULL, ethsw->bpid, 2661 buf_array, BUFS_PER_CMD); 2662 if (ret < 0) { 2663 dev_err(ethsw->dev, 2664 "dpaa2_io_service_acquire() = %d\n", ret); 2665 return; 2666 } 2667 dpaa2_switch_free_bufs(ethsw, buf_array, ret); 2668 2669 } while (ret); 2670 } 2671 2672 static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw) 2673 { 2674 struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 }; 2675 struct device *dev = ethsw->dev; 2676 struct fsl_mc_device *dpbp_dev; 2677 struct dpbp_attr dpbp_attrs; 2678 int err; 2679 2680 err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPBP, 2681 &dpbp_dev); 2682 if (err) { 2683 if (err == -ENXIO) 2684 err = -EPROBE_DEFER; 2685 else 2686 dev_err(dev, "DPBP device allocation failed\n"); 2687 return err; 2688 } 2689 ethsw->dpbp_dev = dpbp_dev; 2690 2691 err = dpbp_open(ethsw->mc_io, 0, dpbp_dev->obj_desc.id, 2692 &dpbp_dev->mc_handle); 2693 if (err) { 2694 dev_err(dev, "dpbp_open() failed\n"); 2695 goto err_open; 2696 } 2697 2698 err = dpbp_reset(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2699 if (err) { 2700 dev_err(dev, "dpbp_reset() failed\n"); 2701 goto err_reset; 2702 } 2703 2704 err = dpbp_enable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2705 if (err) { 2706 dev_err(dev, "dpbp_enable() failed\n"); 2707 goto err_enable; 2708 } 2709 2710 err = dpbp_get_attributes(ethsw->mc_io, 0, dpbp_dev->mc_handle, 2711 &dpbp_attrs); 2712 if (err) { 2713 dev_err(dev, "dpbp_get_attributes() failed\n"); 2714 goto err_get_attr; 2715 } 2716 2717 dpsw_ctrl_if_pools_cfg.num_dpbp = 1; 2718 dpsw_ctrl_if_pools_cfg.pools[0].dpbp_id = dpbp_attrs.id; 2719 dpsw_ctrl_if_pools_cfg.pools[0].buffer_size = DPAA2_SWITCH_RX_BUF_SIZE; 2720 dpsw_ctrl_if_pools_cfg.pools[0].backup_pool = 0; 2721 2722 err = dpsw_ctrl_if_set_pools(ethsw->mc_io, 0, ethsw->dpsw_handle, 2723 &dpsw_ctrl_if_pools_cfg); 2724 if (err) { 2725 dev_err(dev, "dpsw_ctrl_if_set_pools() failed\n"); 2726 goto err_get_attr; 2727 } 2728 ethsw->bpid = dpbp_attrs.id; 2729 2730 return 0; 2731 2732 err_get_attr: 2733 dpbp_disable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2734 err_enable: 2735 err_reset: 2736 dpbp_close(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2737 err_open: 2738 fsl_mc_object_free(dpbp_dev); 2739 return err; 2740 } 2741 2742 static void dpaa2_switch_free_dpbp(struct ethsw_core *ethsw) 2743 { 2744 dpbp_disable(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2745 dpbp_close(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2746 fsl_mc_object_free(ethsw->dpbp_dev); 2747 } 2748 2749 static int dpaa2_switch_alloc_rings(struct ethsw_core *ethsw) 2750 { 2751 int i; 2752 2753 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2754 ethsw->fq[i].store = 2755 dpaa2_io_store_create(DPAA2_SWITCH_STORE_SIZE, 2756 ethsw->dev); 2757 if (!ethsw->fq[i].store) { 2758 dev_err(ethsw->dev, "dpaa2_io_store_create failed\n"); 2759 while (--i >= 0) 2760 dpaa2_io_store_destroy(ethsw->fq[i].store); 2761 return -ENOMEM; 2762 } 2763 } 2764 2765 return 0; 2766 } 2767 2768 static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw) 2769 { 2770 int i; 2771 2772 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2773 dpaa2_io_store_destroy(ethsw->fq[i].store); 2774 } 2775 2776 static int dpaa2_switch_pull_fq(struct dpaa2_switch_fq *fq) 2777 { 2778 int err, retries = 0; 2779 2780 /* Try to pull from the FQ while the portal is busy and we didn't hit 2781 * the maximum number fo retries 2782 */ 2783 do { 2784 err = dpaa2_io_service_pull_fq(NULL, fq->fqid, fq->store); 2785 cpu_relax(); 2786 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2787 2788 if (unlikely(err)) 2789 dev_err(fq->ethsw->dev, "dpaa2_io_service_pull err %d", err); 2790 2791 return err; 2792 } 2793 2794 /* Consume all frames pull-dequeued into the store */ 2795 static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq) 2796 { 2797 struct ethsw_core *ethsw = fq->ethsw; 2798 int cleaned = 0, is_last; 2799 struct dpaa2_dq *dq; 2800 int retries = 0; 2801 2802 do { 2803 /* Get the next available FD from the store */ 2804 dq = dpaa2_io_store_next(fq->store, &is_last); 2805 if (unlikely(!dq)) { 2806 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) { 2807 dev_err_once(ethsw->dev, 2808 "No valid dequeue response\n"); 2809 return -ETIMEDOUT; 2810 } 2811 continue; 2812 } 2813 2814 if (fq->type == DPSW_QUEUE_RX) 2815 dpaa2_switch_rx(fq, dpaa2_dq_fd(dq)); 2816 else 2817 dpaa2_switch_tx_conf(fq, dpaa2_dq_fd(dq)); 2818 cleaned++; 2819 2820 } while (!is_last); 2821 2822 return cleaned; 2823 } 2824 2825 /* NAPI poll routine */ 2826 static int dpaa2_switch_poll(struct napi_struct *napi, int budget) 2827 { 2828 int err, cleaned = 0, store_cleaned, work_done; 2829 struct dpaa2_switch_fq *fq; 2830 int retries = 0; 2831 2832 fq = container_of(napi, struct dpaa2_switch_fq, napi); 2833 2834 do { 2835 err = dpaa2_switch_pull_fq(fq); 2836 if (unlikely(err)) 2837 break; 2838 2839 /* Refill pool if appropriate */ 2840 dpaa2_switch_refill_bp(fq->ethsw); 2841 2842 store_cleaned = dpaa2_switch_store_consume(fq); 2843 cleaned += store_cleaned; 2844 2845 if (cleaned >= budget) { 2846 work_done = budget; 2847 goto out; 2848 } 2849 2850 } while (store_cleaned); 2851 2852 /* We didn't consume the entire budget, so finish napi and re-enable 2853 * data availability notifications 2854 */ 2855 napi_complete_done(napi, cleaned); 2856 do { 2857 err = dpaa2_io_service_rearm(NULL, &fq->nctx); 2858 cpu_relax(); 2859 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2860 2861 work_done = max(cleaned, 1); 2862 out: 2863 2864 return work_done; 2865 } 2866 2867 static void dpaa2_switch_fqdan_cb(struct dpaa2_io_notification_ctx *nctx) 2868 { 2869 struct dpaa2_switch_fq *fq; 2870 2871 fq = container_of(nctx, struct dpaa2_switch_fq, nctx); 2872 2873 napi_schedule(&fq->napi); 2874 } 2875 2876 static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw) 2877 { 2878 struct dpsw_ctrl_if_queue_cfg queue_cfg; 2879 struct dpaa2_io_notification_ctx *nctx; 2880 int err, i, j; 2881 2882 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2883 nctx = ðsw->fq[i].nctx; 2884 2885 /* Register a new software context for the FQID. 2886 * By using NULL as the first parameter, we specify that we do 2887 * not care on which cpu are interrupts received for this queue 2888 */ 2889 nctx->is_cdan = 0; 2890 nctx->id = ethsw->fq[i].fqid; 2891 nctx->desired_cpu = DPAA2_IO_ANY_CPU; 2892 nctx->cb = dpaa2_switch_fqdan_cb; 2893 err = dpaa2_io_service_register(NULL, nctx, ethsw->dev); 2894 if (err) { 2895 err = -EPROBE_DEFER; 2896 goto err_register; 2897 } 2898 2899 queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST | 2900 DPSW_CTRL_IF_QUEUE_OPT_USER_CTX; 2901 queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO; 2902 queue_cfg.dest_cfg.dest_id = nctx->dpio_id; 2903 queue_cfg.dest_cfg.priority = 0; 2904 queue_cfg.user_ctx = nctx->qman64; 2905 2906 err = dpsw_ctrl_if_set_queue(ethsw->mc_io, 0, 2907 ethsw->dpsw_handle, 2908 ethsw->fq[i].type, 2909 &queue_cfg); 2910 if (err) 2911 goto err_set_queue; 2912 } 2913 2914 return 0; 2915 2916 err_set_queue: 2917 dpaa2_io_service_deregister(NULL, nctx, ethsw->dev); 2918 err_register: 2919 for (j = 0; j < i; j++) 2920 dpaa2_io_service_deregister(NULL, ðsw->fq[j].nctx, 2921 ethsw->dev); 2922 2923 return err; 2924 } 2925 2926 static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw) 2927 { 2928 int i; 2929 2930 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2931 dpaa2_io_service_deregister(NULL, ðsw->fq[i].nctx, 2932 ethsw->dev); 2933 } 2934 2935 static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw) 2936 { 2937 int err; 2938 2939 /* setup FQs for Rx and Tx Conf */ 2940 err = dpaa2_switch_setup_fqs(ethsw); 2941 if (err) 2942 return err; 2943 2944 /* setup the buffer pool needed on the Rx path */ 2945 err = dpaa2_switch_setup_dpbp(ethsw); 2946 if (err) 2947 return err; 2948 2949 err = dpaa2_switch_alloc_rings(ethsw); 2950 if (err) 2951 goto err_free_dpbp; 2952 2953 err = dpaa2_switch_setup_dpio(ethsw); 2954 if (err) 2955 goto err_destroy_rings; 2956 2957 err = dpaa2_switch_seed_bp(ethsw); 2958 if (err) 2959 goto err_deregister_dpio; 2960 2961 err = dpsw_ctrl_if_enable(ethsw->mc_io, 0, ethsw->dpsw_handle); 2962 if (err) { 2963 dev_err(ethsw->dev, "dpsw_ctrl_if_enable err %d\n", err); 2964 goto err_drain_dpbp; 2965 } 2966 2967 return 0; 2968 2969 err_drain_dpbp: 2970 dpaa2_switch_drain_bp(ethsw); 2971 err_deregister_dpio: 2972 dpaa2_switch_free_dpio(ethsw); 2973 err_destroy_rings: 2974 dpaa2_switch_destroy_rings(ethsw); 2975 err_free_dpbp: 2976 dpaa2_switch_free_dpbp(ethsw); 2977 2978 return err; 2979 } 2980 2981 static void dpaa2_switch_remove_port(struct ethsw_core *ethsw, 2982 u16 port_idx) 2983 { 2984 struct ethsw_port_priv *port_priv = ethsw->ports[port_idx]; 2985 2986 dpaa2_switch_port_disconnect_mac(port_priv); 2987 free_netdev(port_priv->netdev); 2988 ethsw->ports[port_idx] = NULL; 2989 } 2990 2991 static int dpaa2_switch_init(struct fsl_mc_device *sw_dev) 2992 { 2993 struct device *dev = &sw_dev->dev; 2994 struct ethsw_core *ethsw = dev_get_drvdata(dev); 2995 struct dpsw_vlan_if_cfg vcfg = {0}; 2996 struct dpsw_tci_cfg tci_cfg = {0}; 2997 struct dpsw_stp_cfg stp_cfg; 2998 int err; 2999 u16 i; 3000 3001 ethsw->dev_id = sw_dev->obj_desc.id; 3002 3003 err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, ðsw->dpsw_handle); 3004 if (err) { 3005 dev_err(dev, "dpsw_open err %d\n", err); 3006 return err; 3007 } 3008 3009 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 3010 ðsw->sw_attr); 3011 if (err) { 3012 dev_err(dev, "dpsw_get_attributes err %d\n", err); 3013 goto err_close; 3014 } 3015 3016 err = dpsw_get_api_version(ethsw->mc_io, 0, 3017 ðsw->major, 3018 ðsw->minor); 3019 if (err) { 3020 dev_err(dev, "dpsw_get_api_version err %d\n", err); 3021 goto err_close; 3022 } 3023 3024 /* Minimum supported DPSW version check */ 3025 if (ethsw->major < DPSW_MIN_VER_MAJOR || 3026 (ethsw->major == DPSW_MIN_VER_MAJOR && 3027 ethsw->minor < DPSW_MIN_VER_MINOR)) { 3028 dev_err(dev, "DPSW version %d:%d not supported. Use firmware 10.28.0 or greater.\n", 3029 ethsw->major, ethsw->minor); 3030 err = -EOPNOTSUPP; 3031 goto err_close; 3032 } 3033 3034 if (!dpaa2_switch_supports_cpu_traffic(ethsw)) { 3035 err = -EOPNOTSUPP; 3036 goto err_close; 3037 } 3038 3039 dpaa2_switch_detect_features(ethsw); 3040 3041 err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle); 3042 if (err) { 3043 dev_err(dev, "dpsw_reset err %d\n", err); 3044 goto err_close; 3045 } 3046 3047 stp_cfg.vlan_id = DEFAULT_VLAN_ID; 3048 stp_cfg.state = DPSW_STP_STATE_FORWARDING; 3049 3050 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3051 err = dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i); 3052 if (err) { 3053 dev_err(dev, "dpsw_if_disable err %d\n", err); 3054 goto err_close; 3055 } 3056 3057 err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i, 3058 &stp_cfg); 3059 if (err) { 3060 dev_err(dev, "dpsw_if_set_stp err %d for port %d\n", 3061 err, i); 3062 goto err_close; 3063 } 3064 3065 /* Switch starts with all ports configured to VLAN 1. Need to 3066 * remove this setting to allow configuration at bridge join 3067 */ 3068 vcfg.num_ifs = 1; 3069 vcfg.if_id[0] = i; 3070 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle, 3071 DEFAULT_VLAN_ID, &vcfg); 3072 if (err) { 3073 dev_err(dev, "dpsw_vlan_remove_if_untagged err %d\n", 3074 err); 3075 goto err_close; 3076 } 3077 3078 tci_cfg.vlan_id = 4095; 3079 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, i, &tci_cfg); 3080 if (err) { 3081 dev_err(dev, "dpsw_if_set_tci err %d\n", err); 3082 goto err_close; 3083 } 3084 3085 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 3086 DEFAULT_VLAN_ID, &vcfg); 3087 if (err) { 3088 dev_err(dev, "dpsw_vlan_remove_if err %d\n", err); 3089 goto err_close; 3090 } 3091 } 3092 3093 err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, DEFAULT_VLAN_ID); 3094 if (err) { 3095 dev_err(dev, "dpsw_vlan_remove err %d\n", err); 3096 goto err_close; 3097 } 3098 3099 ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered", 3100 WQ_MEM_RECLAIM, "ethsw", 3101 ethsw->sw_attr.id); 3102 if (!ethsw->workqueue) { 3103 err = -ENOMEM; 3104 goto err_close; 3105 } 3106 3107 err = dpsw_fdb_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, 0); 3108 if (err) 3109 goto err_destroy_ordered_workqueue; 3110 3111 err = dpaa2_switch_ctrl_if_setup(ethsw); 3112 if (err) 3113 goto err_destroy_ordered_workqueue; 3114 3115 return 0; 3116 3117 err_destroy_ordered_workqueue: 3118 destroy_workqueue(ethsw->workqueue); 3119 3120 err_close: 3121 dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3122 return err; 3123 } 3124 3125 /* Add an ACL to redirect frames with specific destination MAC address to 3126 * control interface 3127 */ 3128 static int dpaa2_switch_port_trap_mac_addr(struct ethsw_port_priv *port_priv, 3129 const char *mac) 3130 { 3131 struct dpaa2_switch_acl_entry acl_entry = {0}; 3132 3133 /* Match on the destination MAC address */ 3134 ether_addr_copy(acl_entry.key.match.l2_dest_mac, mac); 3135 eth_broadcast_addr(acl_entry.key.mask.l2_dest_mac); 3136 3137 /* Trap to CPU */ 3138 acl_entry.cfg.precedence = 0; 3139 acl_entry.cfg.result.action = DPSW_ACL_ACTION_REDIRECT_TO_CTRL_IF; 3140 3141 return dpaa2_switch_acl_entry_add(port_priv->filter_block, &acl_entry); 3142 } 3143 3144 static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port) 3145 { 3146 const char stpa[ETH_ALEN] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x00}; 3147 struct switchdev_obj_port_vlan vlan = { 3148 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 3149 .vid = DEFAULT_VLAN_ID, 3150 .flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID, 3151 }; 3152 struct net_device *netdev = port_priv->netdev; 3153 struct ethsw_core *ethsw = port_priv->ethsw_data; 3154 struct dpaa2_switch_filter_block *filter_block; 3155 struct dpsw_fdb_cfg fdb_cfg = {0}; 3156 struct dpsw_if_attr dpsw_if_attr; 3157 struct dpaa2_switch_fdb *fdb; 3158 struct dpsw_acl_cfg acl_cfg; 3159 u16 fdb_id, acl_tbl_id; 3160 int err; 3161 3162 /* Get the Tx queue for this specific port */ 3163 err = dpsw_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 3164 port_priv->idx, &dpsw_if_attr); 3165 if (err) { 3166 netdev_err(netdev, "dpsw_if_get_attributes err %d\n", err); 3167 return err; 3168 } 3169 port_priv->tx_qdid = dpsw_if_attr.qdid; 3170 3171 /* Create a FDB table for this particular switch port */ 3172 fdb_cfg.num_fdb_entries = ethsw->sw_attr.max_fdb_entries / ethsw->sw_attr.num_ifs; 3173 err = dpsw_fdb_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3174 &fdb_id, &fdb_cfg); 3175 if (err) { 3176 netdev_err(netdev, "dpsw_fdb_add err %d\n", err); 3177 return err; 3178 } 3179 3180 /* Find an unused dpaa2_switch_fdb structure and use it */ 3181 fdb = dpaa2_switch_fdb_get_unused(ethsw); 3182 fdb->fdb_id = fdb_id; 3183 fdb->in_use = true; 3184 fdb->bridge_dev = NULL; 3185 port_priv->fdb = fdb; 3186 3187 /* We need to add VLAN 1 as the PVID on this port until it is under a 3188 * bridge since the DPAA2 switch is not able to handle the traffic in a 3189 * VLAN unaware fashion 3190 */ 3191 err = dpaa2_switch_port_vlans_add(netdev, &vlan); 3192 if (err) 3193 return err; 3194 3195 /* Setup the egress flooding domains (broadcast, unknown unicast */ 3196 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 3197 if (err) 3198 return err; 3199 3200 /* Create an ACL table to be used by this switch port */ 3201 acl_cfg.max_entries = DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES; 3202 err = dpsw_acl_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3203 &acl_tbl_id, &acl_cfg); 3204 if (err) { 3205 netdev_err(netdev, "dpsw_acl_add err %d\n", err); 3206 return err; 3207 } 3208 3209 filter_block = dpaa2_switch_filter_block_get_unused(ethsw); 3210 filter_block->ethsw = ethsw; 3211 filter_block->acl_id = acl_tbl_id; 3212 filter_block->in_use = true; 3213 filter_block->num_acl_rules = 0; 3214 INIT_LIST_HEAD(&filter_block->acl_entries); 3215 INIT_LIST_HEAD(&filter_block->mirror_entries); 3216 3217 err = dpaa2_switch_port_acl_tbl_bind(port_priv, filter_block); 3218 if (err) 3219 return err; 3220 3221 err = dpaa2_switch_port_trap_mac_addr(port_priv, stpa); 3222 if (err) 3223 return err; 3224 3225 return err; 3226 } 3227 3228 static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw) 3229 { 3230 dpsw_ctrl_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3231 dpaa2_switch_free_dpio(ethsw); 3232 dpaa2_switch_destroy_rings(ethsw); 3233 dpaa2_switch_drain_bp(ethsw); 3234 dpaa2_switch_free_dpbp(ethsw); 3235 } 3236 3237 static void dpaa2_switch_teardown(struct fsl_mc_device *sw_dev) 3238 { 3239 struct device *dev = &sw_dev->dev; 3240 struct ethsw_core *ethsw = dev_get_drvdata(dev); 3241 int err; 3242 3243 dpaa2_switch_ctrl_if_teardown(ethsw); 3244 3245 destroy_workqueue(ethsw->workqueue); 3246 3247 err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3248 if (err) 3249 dev_warn(dev, "dpsw_close err %d\n", err); 3250 } 3251 3252 static void dpaa2_switch_remove(struct fsl_mc_device *sw_dev) 3253 { 3254 struct ethsw_port_priv *port_priv; 3255 struct ethsw_core *ethsw; 3256 struct device *dev; 3257 int i; 3258 3259 dev = &sw_dev->dev; 3260 ethsw = dev_get_drvdata(dev); 3261 3262 dpaa2_switch_teardown_irqs(sw_dev); 3263 3264 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3265 3266 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3267 port_priv = ethsw->ports[i]; 3268 unregister_netdev(port_priv->netdev); 3269 dpaa2_switch_remove_port(ethsw, i); 3270 } 3271 3272 kfree(ethsw->fdbs); 3273 kfree(ethsw->filter_blocks); 3274 kfree(ethsw->ports); 3275 3276 dpaa2_switch_teardown(sw_dev); 3277 3278 fsl_mc_portal_free(ethsw->mc_io); 3279 3280 kfree(ethsw); 3281 3282 dev_set_drvdata(dev, NULL); 3283 } 3284 3285 static int dpaa2_switch_probe_port(struct ethsw_core *ethsw, 3286 u16 port_idx) 3287 { 3288 struct ethsw_port_priv *port_priv; 3289 struct device *dev = ethsw->dev; 3290 struct net_device *port_netdev; 3291 int err; 3292 3293 port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv)); 3294 if (!port_netdev) { 3295 dev_err(dev, "alloc_etherdev error\n"); 3296 return -ENOMEM; 3297 } 3298 3299 port_priv = netdev_priv(port_netdev); 3300 port_priv->netdev = port_netdev; 3301 port_priv->ethsw_data = ethsw; 3302 3303 mutex_init(&port_priv->mac_lock); 3304 3305 port_priv->idx = port_idx; 3306 port_priv->stp_state = BR_STATE_FORWARDING; 3307 3308 SET_NETDEV_DEV(port_netdev, dev); 3309 port_netdev->netdev_ops = &dpaa2_switch_port_ops; 3310 port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops; 3311 3312 port_netdev->needed_headroom = DPAA2_SWITCH_NEEDED_HEADROOM; 3313 3314 port_priv->bcast_flood = true; 3315 port_priv->ucast_flood = true; 3316 3317 /* Set MTU limits */ 3318 port_netdev->min_mtu = ETH_MIN_MTU; 3319 port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH; 3320 3321 /* Populate the private port structure so that later calls to 3322 * dpaa2_switch_port_init() can use it. 3323 */ 3324 ethsw->ports[port_idx] = port_priv; 3325 3326 /* The DPAA2 switch's ingress path depends on the VLAN table, 3327 * thus we are not able to disable VLAN filtering. 3328 */ 3329 port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER | 3330 NETIF_F_HW_VLAN_STAG_FILTER | 3331 NETIF_F_HW_TC; 3332 port_netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 3333 3334 err = dpaa2_switch_port_init(port_priv, port_idx); 3335 if (err) 3336 goto err_port_probe; 3337 3338 err = dpaa2_switch_port_set_mac_addr(port_priv); 3339 if (err) 3340 goto err_port_probe; 3341 3342 err = dpaa2_switch_port_set_learning(port_priv, false); 3343 if (err) 3344 goto err_port_probe; 3345 port_priv->learn_ena = false; 3346 3347 err = dpaa2_switch_port_connect_mac(port_priv); 3348 if (err) 3349 goto err_port_probe; 3350 3351 return 0; 3352 3353 err_port_probe: 3354 free_netdev(port_netdev); 3355 ethsw->ports[port_idx] = NULL; 3356 3357 return err; 3358 } 3359 3360 static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev) 3361 { 3362 struct device *dev = &sw_dev->dev; 3363 struct ethsw_core *ethsw; 3364 int i, err; 3365 3366 /* Allocate switch core*/ 3367 ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL); 3368 3369 if (!ethsw) 3370 return -ENOMEM; 3371 3372 ethsw->dev = dev; 3373 ethsw->iommu_domain = iommu_get_domain_for_dev(dev); 3374 dev_set_drvdata(dev, ethsw); 3375 3376 err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, 3377 ðsw->mc_io); 3378 if (err) { 3379 if (err == -ENXIO) 3380 err = -EPROBE_DEFER; 3381 else 3382 dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); 3383 goto err_free_drvdata; 3384 } 3385 3386 err = dpaa2_switch_init(sw_dev); 3387 if (err) 3388 goto err_free_cmdport; 3389 3390 ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports), 3391 GFP_KERNEL); 3392 if (!(ethsw->ports)) { 3393 err = -ENOMEM; 3394 goto err_teardown; 3395 } 3396 3397 ethsw->fdbs = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->fdbs), 3398 GFP_KERNEL); 3399 if (!ethsw->fdbs) { 3400 err = -ENOMEM; 3401 goto err_free_ports; 3402 } 3403 3404 ethsw->filter_blocks = kcalloc(ethsw->sw_attr.num_ifs, 3405 sizeof(*ethsw->filter_blocks), 3406 GFP_KERNEL); 3407 if (!ethsw->filter_blocks) { 3408 err = -ENOMEM; 3409 goto err_free_fdbs; 3410 } 3411 3412 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3413 err = dpaa2_switch_probe_port(ethsw, i); 3414 if (err) 3415 goto err_free_netdev; 3416 } 3417 3418 /* Add a NAPI instance for each of the Rx queues. The first port's 3419 * net_device will be associated with the instances since we do not have 3420 * different queues for each switch ports. 3421 */ 3422 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 3423 netif_napi_add(ethsw->ports[0]->netdev, ðsw->fq[i].napi, 3424 dpaa2_switch_poll); 3425 3426 /* Setup IRQs */ 3427 err = dpaa2_switch_setup_irqs(sw_dev); 3428 if (err) 3429 goto err_stop; 3430 3431 /* By convention, if the mirror port is equal to the number of switch 3432 * interfaces, then mirroring of any kind is disabled. 3433 */ 3434 ethsw->mirror_port = ethsw->sw_attr.num_ifs; 3435 3436 /* Register the netdev only when the entire setup is done and the 3437 * switch port interfaces are ready to receive traffic 3438 */ 3439 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3440 err = register_netdev(ethsw->ports[i]->netdev); 3441 if (err < 0) { 3442 dev_err(dev, "register_netdev error %d\n", err); 3443 goto err_unregister_ports; 3444 } 3445 } 3446 3447 return 0; 3448 3449 err_unregister_ports: 3450 for (i--; i >= 0; i--) 3451 unregister_netdev(ethsw->ports[i]->netdev); 3452 dpaa2_switch_teardown_irqs(sw_dev); 3453 err_stop: 3454 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3455 err_free_netdev: 3456 for (i--; i >= 0; i--) 3457 dpaa2_switch_remove_port(ethsw, i); 3458 kfree(ethsw->filter_blocks); 3459 err_free_fdbs: 3460 kfree(ethsw->fdbs); 3461 err_free_ports: 3462 kfree(ethsw->ports); 3463 3464 err_teardown: 3465 dpaa2_switch_teardown(sw_dev); 3466 3467 err_free_cmdport: 3468 fsl_mc_portal_free(ethsw->mc_io); 3469 3470 err_free_drvdata: 3471 kfree(ethsw); 3472 dev_set_drvdata(dev, NULL); 3473 3474 return err; 3475 } 3476 3477 static const struct fsl_mc_device_id dpaa2_switch_match_id_table[] = { 3478 { 3479 .vendor = FSL_MC_VENDOR_FREESCALE, 3480 .obj_type = "dpsw", 3481 }, 3482 { .vendor = 0x0 } 3483 }; 3484 MODULE_DEVICE_TABLE(fslmc, dpaa2_switch_match_id_table); 3485 3486 static struct fsl_mc_driver dpaa2_switch_drv = { 3487 .driver = { 3488 .name = KBUILD_MODNAME, 3489 }, 3490 .probe = dpaa2_switch_probe, 3491 .remove = dpaa2_switch_remove, 3492 .match_id_table = dpaa2_switch_match_id_table 3493 }; 3494 3495 static struct notifier_block dpaa2_switch_port_nb __read_mostly = { 3496 .notifier_call = dpaa2_switch_port_netdevice_event, 3497 }; 3498 3499 static struct notifier_block dpaa2_switch_port_switchdev_nb = { 3500 .notifier_call = dpaa2_switch_port_event, 3501 }; 3502 3503 static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb = { 3504 .notifier_call = dpaa2_switch_port_blocking_event, 3505 }; 3506 3507 static int dpaa2_switch_register_notifiers(void) 3508 { 3509 int err; 3510 3511 err = register_netdevice_notifier(&dpaa2_switch_port_nb); 3512 if (err) { 3513 pr_err("dpaa2-switch: failed to register net_device notifier (%d)\n", err); 3514 return err; 3515 } 3516 3517 err = register_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3518 if (err) { 3519 pr_err("dpaa2-switch: failed to register switchdev notifier (%d)\n", err); 3520 goto err_switchdev_nb; 3521 } 3522 3523 err = register_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3524 if (err) { 3525 pr_err("dpaa2-switch: failed to register switchdev blocking notifier (%d)\n", err); 3526 goto err_switchdev_blocking_nb; 3527 } 3528 3529 return 0; 3530 3531 err_switchdev_blocking_nb: 3532 unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3533 err_switchdev_nb: 3534 unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3535 3536 return err; 3537 } 3538 3539 static void dpaa2_switch_unregister_notifiers(void) 3540 { 3541 int err; 3542 3543 err = unregister_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3544 if (err) 3545 pr_err("dpaa2-switch: failed to unregister switchdev blocking notifier (%d)\n", 3546 err); 3547 3548 err = unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3549 if (err) 3550 pr_err("dpaa2-switch: failed to unregister switchdev notifier (%d)\n", err); 3551 3552 err = unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3553 if (err) 3554 pr_err("dpaa2-switch: failed to unregister net_device notifier (%d)\n", err); 3555 } 3556 3557 static int __init dpaa2_switch_driver_init(void) 3558 { 3559 int err; 3560 3561 err = fsl_mc_driver_register(&dpaa2_switch_drv); 3562 if (err) 3563 return err; 3564 3565 err = dpaa2_switch_register_notifiers(); 3566 if (err) { 3567 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3568 return err; 3569 } 3570 3571 return 0; 3572 } 3573 3574 static void __exit dpaa2_switch_driver_exit(void) 3575 { 3576 dpaa2_switch_unregister_notifiers(); 3577 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3578 } 3579 3580 module_init(dpaa2_switch_driver_init); 3581 module_exit(dpaa2_switch_driver_exit); 3582 3583 MODULE_LICENSE("GPL v2"); 3584 MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver"); 3585