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 28static u16 dpaa2_switch_port_get_fdb_id(struct ethsw_port_priv *port_priv) 29{ 30 return port_priv->fdb->fdb_id; 31} 32 33static 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 43static struct dpaa2_switch_filter_block * 44dpaa2_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 54static 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 124static 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 155static 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 181static 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 191static 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 209static 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 228static 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 269set_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 283static 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_warn(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 332static 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 350static 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 379static 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 403static 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 424static 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 446static 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 469static 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 492static 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 554error: 555 netdev_err(netdev, "dpsw_if_get_counter err %d\n", err); 556} 557 558static 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 564static 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 577static 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 597static 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 649static 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 667static 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 683static 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 719static 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 749static 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 760static 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 773struct ethsw_dump_ctx { 774 struct net_device *dev; 775 struct sk_buff *skb; 776 struct netlink_callback *cb; 777 int idx; 778}; 779 780static 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 811skip: 812 dump->idx++; 813 return 0; 814 815nla_put_failure: 816 nlmsg_cancel(dump->skb, nlh); 817 return -EMSGSIZE; 818} 819 820static 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 834static 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 881end: 882 kfree(dma_mem); 883 884 return 0; 885 886err_dump: 887 dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE); 888err_map: 889 kfree(dma_mem); 890 return err; 891} 892 893static 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 903static 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 922static 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 940static 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 946static 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 960static 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 974static 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 1014static 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 1036static 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 1081static 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 1139err_free_skb: 1140 dev_kfree_skb(skb); 1141err_exit: 1142 return NETDEV_TX_OK; 1143} 1144 1145static int 1146dpaa2_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 1159static int 1160dpaa2_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 1173static 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 1187static LIST_HEAD(dpaa2_switch_block_cb_list); 1188 1189static int 1190dpaa2_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 1216static int 1217dpaa2_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 1242static 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 1274static int 1275dpaa2_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 1307static 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 1351err_block_bind: 1352 if (!flow_block_cb_decref(block_cb)) 1353 flow_block_cb_free(block_cb); 1354 return err; 1355} 1356 1357static 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 1380static 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 1399static 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 1414static 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 1433bool dpaa2_switch_port_dev_check(const struct net_device *netdev) 1434{ 1435 return netdev->netdev_ops == &dpaa2_switch_port_ops; 1436} 1437 1438static 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 1481err_close_mac: 1482 dpaa2_mac_close(mac); 1483err_free_mac: 1484 kfree(mac); 1485 return err; 1486} 1487 1488static 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 1507static 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 u32 status = ~0; 1513 int err, if_id; 1514 bool had_mac; 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 dpaa2_switch_port_set_mac_addr(port_priv); 1529 } 1530 1531 if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) { 1532 /* We can avoid locking because the "endpoint changed" IRQ 1533 * handler is the only one who changes priv->mac at runtime, 1534 * so we are not racing with anyone. 1535 */ 1536 had_mac = !!port_priv->mac; 1537 if (had_mac) 1538 dpaa2_switch_port_disconnect_mac(port_priv); 1539 else 1540 dpaa2_switch_port_connect_mac(port_priv); 1541 } 1542 1543out: 1544 err = dpsw_clear_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle, 1545 DPSW_IRQ_INDEX_IF, status); 1546 if (err) 1547 dev_err(dev, "Can't clear irq status (err %d)\n", err); 1548 1549 return IRQ_HANDLED; 1550} 1551 1552static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev) 1553{ 1554 struct device *dev = &sw_dev->dev; 1555 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1556 u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED; 1557 struct fsl_mc_device_irq *irq; 1558 int err; 1559 1560 err = fsl_mc_allocate_irqs(sw_dev); 1561 if (err) { 1562 dev_err(dev, "MC irqs allocation failed\n"); 1563 return err; 1564 } 1565 1566 if (WARN_ON(sw_dev->obj_desc.irq_count != DPSW_IRQ_NUM)) { 1567 err = -EINVAL; 1568 goto free_irq; 1569 } 1570 1571 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1572 DPSW_IRQ_INDEX_IF, 0); 1573 if (err) { 1574 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1575 goto free_irq; 1576 } 1577 1578 irq = sw_dev->irqs[DPSW_IRQ_INDEX_IF]; 1579 1580 err = devm_request_threaded_irq(dev, irq->virq, NULL, 1581 dpaa2_switch_irq0_handler_thread, 1582 IRQF_NO_SUSPEND | IRQF_ONESHOT, 1583 dev_name(dev), dev); 1584 if (err) { 1585 dev_err(dev, "devm_request_threaded_irq(): %d\n", err); 1586 goto free_irq; 1587 } 1588 1589 err = dpsw_set_irq_mask(ethsw->mc_io, 0, ethsw->dpsw_handle, 1590 DPSW_IRQ_INDEX_IF, mask); 1591 if (err) { 1592 dev_err(dev, "dpsw_set_irq_mask(): %d\n", err); 1593 goto free_devm_irq; 1594 } 1595 1596 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1597 DPSW_IRQ_INDEX_IF, 1); 1598 if (err) { 1599 dev_err(dev, "dpsw_set_irq_enable(): %d\n", err); 1600 goto free_devm_irq; 1601 } 1602 1603 return 0; 1604 1605free_devm_irq: 1606 devm_free_irq(dev, irq->virq, dev); 1607free_irq: 1608 fsl_mc_free_irqs(sw_dev); 1609 return err; 1610} 1611 1612static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev) 1613{ 1614 struct device *dev = &sw_dev->dev; 1615 struct ethsw_core *ethsw = dev_get_drvdata(dev); 1616 int err; 1617 1618 err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle, 1619 DPSW_IRQ_INDEX_IF, 0); 1620 if (err) 1621 dev_err(dev, "dpsw_set_irq_enable err %d\n", err); 1622 1623 fsl_mc_free_irqs(sw_dev); 1624} 1625 1626static int dpaa2_switch_port_set_learning(struct ethsw_port_priv *port_priv, bool enable) 1627{ 1628 struct ethsw_core *ethsw = port_priv->ethsw_data; 1629 enum dpsw_learning_mode learn_mode; 1630 int err; 1631 1632 if (enable) 1633 learn_mode = DPSW_LEARNING_MODE_HW; 1634 else 1635 learn_mode = DPSW_LEARNING_MODE_DIS; 1636 1637 err = dpsw_if_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle, 1638 port_priv->idx, learn_mode); 1639 if (err) 1640 netdev_err(port_priv->netdev, "dpsw_if_set_learning_mode err %d\n", err); 1641 1642 if (!enable) 1643 dpaa2_switch_port_fast_age(port_priv); 1644 1645 return err; 1646} 1647 1648static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev, 1649 u8 state) 1650{ 1651 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1652 int err; 1653 1654 err = dpaa2_switch_port_set_stp_state(port_priv, state); 1655 if (err) 1656 return err; 1657 1658 switch (state) { 1659 case BR_STATE_DISABLED: 1660 case BR_STATE_BLOCKING: 1661 case BR_STATE_LISTENING: 1662 err = dpaa2_switch_port_set_learning(port_priv, false); 1663 break; 1664 case BR_STATE_LEARNING: 1665 case BR_STATE_FORWARDING: 1666 err = dpaa2_switch_port_set_learning(port_priv, 1667 port_priv->learn_ena); 1668 break; 1669 } 1670 1671 return err; 1672} 1673 1674static int dpaa2_switch_port_flood(struct ethsw_port_priv *port_priv, 1675 struct switchdev_brport_flags flags) 1676{ 1677 struct ethsw_core *ethsw = port_priv->ethsw_data; 1678 1679 if (flags.mask & BR_BCAST_FLOOD) 1680 port_priv->bcast_flood = !!(flags.val & BR_BCAST_FLOOD); 1681 1682 if (flags.mask & BR_FLOOD) 1683 port_priv->ucast_flood = !!(flags.val & BR_FLOOD); 1684 1685 return dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 1686} 1687 1688static int dpaa2_switch_port_pre_bridge_flags(struct net_device *netdev, 1689 struct switchdev_brport_flags flags, 1690 struct netlink_ext_ack *extack) 1691{ 1692 if (flags.mask & ~(BR_LEARNING | BR_BCAST_FLOOD | BR_FLOOD | 1693 BR_MCAST_FLOOD)) 1694 return -EINVAL; 1695 1696 if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD)) { 1697 bool multicast = !!(flags.val & BR_MCAST_FLOOD); 1698 bool unicast = !!(flags.val & BR_FLOOD); 1699 1700 if (unicast != multicast) { 1701 NL_SET_ERR_MSG_MOD(extack, 1702 "Cannot configure multicast flooding independently of unicast"); 1703 return -EINVAL; 1704 } 1705 } 1706 1707 return 0; 1708} 1709 1710static int dpaa2_switch_port_bridge_flags(struct net_device *netdev, 1711 struct switchdev_brport_flags flags, 1712 struct netlink_ext_ack *extack) 1713{ 1714 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1715 int err; 1716 1717 if (flags.mask & BR_LEARNING) { 1718 bool learn_ena = !!(flags.val & BR_LEARNING); 1719 1720 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 1721 if (err) 1722 return err; 1723 port_priv->learn_ena = learn_ena; 1724 } 1725 1726 if (flags.mask & (BR_BCAST_FLOOD | BR_FLOOD | BR_MCAST_FLOOD)) { 1727 err = dpaa2_switch_port_flood(port_priv, flags); 1728 if (err) 1729 return err; 1730 } 1731 1732 return 0; 1733} 1734 1735static int dpaa2_switch_port_attr_set(struct net_device *netdev, const void *ctx, 1736 const struct switchdev_attr *attr, 1737 struct netlink_ext_ack *extack) 1738{ 1739 int err = 0; 1740 1741 switch (attr->id) { 1742 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 1743 err = dpaa2_switch_port_attr_stp_state_set(netdev, 1744 attr->u.stp_state); 1745 break; 1746 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 1747 if (!attr->u.vlan_filtering) { 1748 NL_SET_ERR_MSG_MOD(extack, 1749 "The DPAA2 switch does not support VLAN-unaware operation"); 1750 return -EOPNOTSUPP; 1751 } 1752 break; 1753 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: 1754 err = dpaa2_switch_port_pre_bridge_flags(netdev, attr->u.brport_flags, extack); 1755 break; 1756 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: 1757 err = dpaa2_switch_port_bridge_flags(netdev, attr->u.brport_flags, extack); 1758 break; 1759 default: 1760 err = -EOPNOTSUPP; 1761 break; 1762 } 1763 1764 return err; 1765} 1766 1767int dpaa2_switch_port_vlans_add(struct net_device *netdev, 1768 const struct switchdev_obj_port_vlan *vlan) 1769{ 1770 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1771 struct ethsw_core *ethsw = port_priv->ethsw_data; 1772 struct dpsw_attr *attr = ðsw->sw_attr; 1773 int err = 0; 1774 1775 /* Make sure that the VLAN is not already configured 1776 * on the switch port 1777 */ 1778 if (port_priv->vlans[vlan->vid] & ETHSW_VLAN_MEMBER) 1779 return -EEXIST; 1780 1781 /* Check if there is space for a new VLAN */ 1782 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1783 ðsw->sw_attr); 1784 if (err) { 1785 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1786 return err; 1787 } 1788 if (attr->max_vlans - attr->num_vlans < 1) 1789 return -ENOSPC; 1790 1791 /* Check if there is space for a new VLAN */ 1792 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 1793 ðsw->sw_attr); 1794 if (err) { 1795 netdev_err(netdev, "dpsw_get_attributes err %d\n", err); 1796 return err; 1797 } 1798 if (attr->max_vlans - attr->num_vlans < 1) 1799 return -ENOSPC; 1800 1801 if (!port_priv->ethsw_data->vlans[vlan->vid]) { 1802 /* this is a new VLAN */ 1803 err = dpaa2_switch_add_vlan(port_priv, vlan->vid); 1804 if (err) 1805 return err; 1806 1807 port_priv->ethsw_data->vlans[vlan->vid] |= ETHSW_VLAN_GLOBAL; 1808 } 1809 1810 return dpaa2_switch_port_add_vlan(port_priv, vlan->vid, vlan->flags); 1811} 1812 1813static int dpaa2_switch_port_lookup_address(struct net_device *netdev, int is_uc, 1814 const unsigned char *addr) 1815{ 1816 struct netdev_hw_addr_list *list = (is_uc) ? &netdev->uc : &netdev->mc; 1817 struct netdev_hw_addr *ha; 1818 1819 netif_addr_lock_bh(netdev); 1820 list_for_each_entry(ha, &list->list, list) { 1821 if (ether_addr_equal(ha->addr, addr)) { 1822 netif_addr_unlock_bh(netdev); 1823 return 1; 1824 } 1825 } 1826 netif_addr_unlock_bh(netdev); 1827 return 0; 1828} 1829 1830static int dpaa2_switch_port_mdb_add(struct net_device *netdev, 1831 const struct switchdev_obj_port_mdb *mdb) 1832{ 1833 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1834 int err; 1835 1836 /* Check if address is already set on this port */ 1837 if (dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1838 return -EEXIST; 1839 1840 err = dpaa2_switch_port_fdb_add_mc(port_priv, mdb->addr); 1841 if (err) 1842 return err; 1843 1844 err = dev_mc_add(netdev, mdb->addr); 1845 if (err) { 1846 netdev_err(netdev, "dev_mc_add err %d\n", err); 1847 dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1848 } 1849 1850 return err; 1851} 1852 1853static int dpaa2_switch_port_obj_add(struct net_device *netdev, 1854 const struct switchdev_obj *obj) 1855{ 1856 int err; 1857 1858 switch (obj->id) { 1859 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1860 err = dpaa2_switch_port_vlans_add(netdev, 1861 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1862 break; 1863 case SWITCHDEV_OBJ_ID_PORT_MDB: 1864 err = dpaa2_switch_port_mdb_add(netdev, 1865 SWITCHDEV_OBJ_PORT_MDB(obj)); 1866 break; 1867 default: 1868 err = -EOPNOTSUPP; 1869 break; 1870 } 1871 1872 return err; 1873} 1874 1875static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid) 1876{ 1877 struct ethsw_core *ethsw = port_priv->ethsw_data; 1878 struct net_device *netdev = port_priv->netdev; 1879 struct dpsw_vlan_if_cfg vcfg; 1880 int i, err; 1881 1882 if (!port_priv->vlans[vid]) 1883 return -ENOENT; 1884 1885 if (port_priv->vlans[vid] & ETHSW_VLAN_PVID) { 1886 /* If we are deleting the PVID of a port, use VLAN 4095 instead 1887 * as we are sure that neither the bridge nor the 8021q module 1888 * will use it 1889 */ 1890 err = dpaa2_switch_port_set_pvid(port_priv, 4095); 1891 if (err) 1892 return err; 1893 } 1894 1895 vcfg.num_ifs = 1; 1896 vcfg.if_id[0] = port_priv->idx; 1897 if (port_priv->vlans[vid] & ETHSW_VLAN_UNTAGGED) { 1898 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, 1899 ethsw->dpsw_handle, 1900 vid, &vcfg); 1901 if (err) { 1902 netdev_err(netdev, 1903 "dpsw_vlan_remove_if_untagged err %d\n", 1904 err); 1905 } 1906 port_priv->vlans[vid] &= ~ETHSW_VLAN_UNTAGGED; 1907 } 1908 1909 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) { 1910 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 1911 vid, &vcfg); 1912 if (err) { 1913 netdev_err(netdev, 1914 "dpsw_vlan_remove_if err %d\n", err); 1915 return err; 1916 } 1917 port_priv->vlans[vid] &= ~ETHSW_VLAN_MEMBER; 1918 1919 /* Delete VLAN from switch if it is no longer configured on 1920 * any port 1921 */ 1922 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 1923 if (ethsw->ports[i] && 1924 ethsw->ports[i]->vlans[vid] & ETHSW_VLAN_MEMBER) 1925 return 0; /* Found a port member in VID */ 1926 } 1927 1928 ethsw->vlans[vid] &= ~ETHSW_VLAN_GLOBAL; 1929 1930 err = dpaa2_switch_dellink(ethsw, vid); 1931 if (err) 1932 return err; 1933 } 1934 1935 return 0; 1936} 1937 1938int dpaa2_switch_port_vlans_del(struct net_device *netdev, 1939 const struct switchdev_obj_port_vlan *vlan) 1940{ 1941 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1942 1943 if (netif_is_bridge_master(vlan->obj.orig_dev)) 1944 return -EOPNOTSUPP; 1945 1946 return dpaa2_switch_port_del_vlan(port_priv, vlan->vid); 1947} 1948 1949static int dpaa2_switch_port_mdb_del(struct net_device *netdev, 1950 const struct switchdev_obj_port_mdb *mdb) 1951{ 1952 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 1953 int err; 1954 1955 if (!dpaa2_switch_port_lookup_address(netdev, 0, mdb->addr)) 1956 return -ENOENT; 1957 1958 err = dpaa2_switch_port_fdb_del_mc(port_priv, mdb->addr); 1959 if (err) 1960 return err; 1961 1962 err = dev_mc_del(netdev, mdb->addr); 1963 if (err) { 1964 netdev_err(netdev, "dev_mc_del err %d\n", err); 1965 return err; 1966 } 1967 1968 return err; 1969} 1970 1971static int dpaa2_switch_port_obj_del(struct net_device *netdev, 1972 const struct switchdev_obj *obj) 1973{ 1974 int err; 1975 1976 switch (obj->id) { 1977 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1978 err = dpaa2_switch_port_vlans_del(netdev, SWITCHDEV_OBJ_PORT_VLAN(obj)); 1979 break; 1980 case SWITCHDEV_OBJ_ID_PORT_MDB: 1981 err = dpaa2_switch_port_mdb_del(netdev, SWITCHDEV_OBJ_PORT_MDB(obj)); 1982 break; 1983 default: 1984 err = -EOPNOTSUPP; 1985 break; 1986 } 1987 return err; 1988} 1989 1990static int dpaa2_switch_port_attr_set_event(struct net_device *netdev, 1991 struct switchdev_notifier_port_attr_info *ptr) 1992{ 1993 int err; 1994 1995 err = switchdev_handle_port_attr_set(netdev, ptr, 1996 dpaa2_switch_port_dev_check, 1997 dpaa2_switch_port_attr_set); 1998 return notifier_from_errno(err); 1999} 2000 2001static int dpaa2_switch_port_bridge_join(struct net_device *netdev, 2002 struct net_device *upper_dev, 2003 struct netlink_ext_ack *extack) 2004{ 2005 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2006 struct ethsw_core *ethsw = port_priv->ethsw_data; 2007 struct ethsw_port_priv *other_port_priv; 2008 struct net_device *other_dev; 2009 struct list_head *iter; 2010 bool learn_ena; 2011 int err; 2012 2013 netdev_for_each_lower_dev(upper_dev, other_dev, iter) { 2014 if (!dpaa2_switch_port_dev_check(other_dev)) 2015 continue; 2016 2017 other_port_priv = netdev_priv(other_dev); 2018 if (other_port_priv->ethsw_data != port_priv->ethsw_data) { 2019 NL_SET_ERR_MSG_MOD(extack, 2020 "Interface from a different DPSW is in the bridge already"); 2021 return -EINVAL; 2022 } 2023 } 2024 2025 /* Delete the previously manually installed VLAN 1 */ 2026 err = dpaa2_switch_port_del_vlan(port_priv, 1); 2027 if (err) 2028 return err; 2029 2030 dpaa2_switch_port_set_fdb(port_priv, upper_dev); 2031 2032 /* Inherit the initial bridge port learning state */ 2033 learn_ena = br_port_flag_is_set(netdev, BR_LEARNING); 2034 err = dpaa2_switch_port_set_learning(port_priv, learn_ena); 2035 port_priv->learn_ena = learn_ena; 2036 2037 /* Setup the egress flood policy (broadcast, unknown unicast) */ 2038 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2039 if (err) 2040 goto err_egress_flood; 2041 2042 err = switchdev_bridge_port_offload(netdev, netdev, NULL, 2043 NULL, NULL, false, extack); 2044 if (err) 2045 goto err_switchdev_offload; 2046 2047 return 0; 2048 2049err_switchdev_offload: 2050err_egress_flood: 2051 dpaa2_switch_port_set_fdb(port_priv, NULL); 2052 return err; 2053} 2054 2055static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg) 2056{ 2057 __be16 vlan_proto = htons(ETH_P_8021Q); 2058 2059 if (vdev) 2060 vlan_proto = vlan_dev_vlan_proto(vdev); 2061 2062 return dpaa2_switch_port_vlan_kill(arg, vlan_proto, vid); 2063} 2064 2065static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg) 2066{ 2067 __be16 vlan_proto = htons(ETH_P_8021Q); 2068 2069 if (vdev) 2070 vlan_proto = vlan_dev_vlan_proto(vdev); 2071 2072 return dpaa2_switch_port_vlan_add(arg, vlan_proto, vid); 2073} 2074 2075static void dpaa2_switch_port_pre_bridge_leave(struct net_device *netdev) 2076{ 2077 switchdev_bridge_port_unoffload(netdev, NULL, NULL, NULL); 2078} 2079 2080static int dpaa2_switch_port_bridge_leave(struct net_device *netdev) 2081{ 2082 struct ethsw_port_priv *port_priv = netdev_priv(netdev); 2083 struct dpaa2_switch_fdb *old_fdb = port_priv->fdb; 2084 struct ethsw_core *ethsw = port_priv->ethsw_data; 2085 int err; 2086 2087 /* First of all, fast age any learn FDB addresses on this switch port */ 2088 dpaa2_switch_port_fast_age(port_priv); 2089 2090 /* Clear all RX VLANs installed through vlan_vid_add() either as VLAN 2091 * upper devices or otherwise from the FDB table that we are about to 2092 * leave 2093 */ 2094 err = vlan_for_each(netdev, dpaa2_switch_port_clear_rxvlan, netdev); 2095 if (err) 2096 netdev_err(netdev, "Unable to clear RX VLANs from old FDB table, err (%d)\n", err); 2097 2098 dpaa2_switch_port_set_fdb(port_priv, NULL); 2099 2100 /* Restore all RX VLANs into the new FDB table that we just joined */ 2101 err = vlan_for_each(netdev, dpaa2_switch_port_restore_rxvlan, netdev); 2102 if (err) 2103 netdev_err(netdev, "Unable to restore RX VLANs to the new FDB, err (%d)\n", err); 2104 2105 /* Reset the flooding state to denote that this port can send any 2106 * packet in standalone mode. With this, we are also ensuring that any 2107 * later bridge join will have the flooding flag on. 2108 */ 2109 port_priv->bcast_flood = true; 2110 port_priv->ucast_flood = true; 2111 2112 /* Setup the egress flood policy (broadcast, unknown unicast). 2113 * When the port is not under a bridge, only the CTRL interface is part 2114 * of the flooding domain besides the actual port 2115 */ 2116 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 2117 if (err) 2118 return err; 2119 2120 /* Recreate the egress flood domain of the FDB that we just left */ 2121 err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id); 2122 if (err) 2123 return err; 2124 2125 /* No HW learning when not under a bridge */ 2126 err = dpaa2_switch_port_set_learning(port_priv, false); 2127 if (err) 2128 return err; 2129 port_priv->learn_ena = false; 2130 2131 /* Add the VLAN 1 as PVID when not under a bridge. We need this since 2132 * the dpaa2 switch interfaces are not capable to be VLAN unaware 2133 */ 2134 return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID, 2135 BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID); 2136} 2137 2138static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev) 2139{ 2140 struct net_device *upper_dev; 2141 struct list_head *iter; 2142 2143 /* RCU read lock not necessary because we have write-side protection 2144 * (rtnl_mutex), however a non-rcu iterator does not exist. 2145 */ 2146 netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter) 2147 if (is_vlan_dev(upper_dev)) 2148 return -EOPNOTSUPP; 2149 2150 return 0; 2151} 2152 2153static int 2154dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev, 2155 struct net_device *upper_dev, 2156 struct netlink_ext_ack *extack) 2157{ 2158 int err; 2159 2160 if (!br_vlan_enabled(upper_dev)) { 2161 NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge"); 2162 return -EOPNOTSUPP; 2163 } 2164 2165 err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev); 2166 if (err) { 2167 NL_SET_ERR_MSG_MOD(extack, 2168 "Cannot join a bridge while VLAN uppers are present"); 2169 return 0; 2170 } 2171 2172 return 0; 2173} 2174 2175static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, 2176 unsigned long event, void *ptr) 2177{ 2178 struct net_device *netdev = netdev_notifier_info_to_dev(ptr); 2179 struct netdev_notifier_changeupper_info *info = ptr; 2180 struct netlink_ext_ack *extack; 2181 struct net_device *upper_dev; 2182 int err = 0; 2183 2184 if (!dpaa2_switch_port_dev_check(netdev)) 2185 return NOTIFY_DONE; 2186 2187 extack = netdev_notifier_info_to_extack(&info->info); 2188 2189 switch (event) { 2190 case NETDEV_PRECHANGEUPPER: 2191 upper_dev = info->upper_dev; 2192 if (!netif_is_bridge_master(upper_dev)) 2193 break; 2194 2195 err = dpaa2_switch_prechangeupper_sanity_checks(netdev, 2196 upper_dev, 2197 extack); 2198 if (err) 2199 goto out; 2200 2201 if (!info->linking) 2202 dpaa2_switch_port_pre_bridge_leave(netdev); 2203 2204 break; 2205 case NETDEV_CHANGEUPPER: 2206 upper_dev = info->upper_dev; 2207 if (netif_is_bridge_master(upper_dev)) { 2208 if (info->linking) 2209 err = dpaa2_switch_port_bridge_join(netdev, 2210 upper_dev, 2211 extack); 2212 else 2213 err = dpaa2_switch_port_bridge_leave(netdev); 2214 } 2215 break; 2216 } 2217 2218out: 2219 return notifier_from_errno(err); 2220} 2221 2222struct ethsw_switchdev_event_work { 2223 struct work_struct work; 2224 struct switchdev_notifier_fdb_info fdb_info; 2225 struct net_device *dev; 2226 unsigned long event; 2227}; 2228 2229static void dpaa2_switch_event_work(struct work_struct *work) 2230{ 2231 struct ethsw_switchdev_event_work *switchdev_work = 2232 container_of(work, struct ethsw_switchdev_event_work, work); 2233 struct net_device *dev = switchdev_work->dev; 2234 struct switchdev_notifier_fdb_info *fdb_info; 2235 int err; 2236 2237 rtnl_lock(); 2238 fdb_info = &switchdev_work->fdb_info; 2239 2240 switch (switchdev_work->event) { 2241 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2242 if (!fdb_info->added_by_user || fdb_info->is_local) 2243 break; 2244 if (is_unicast_ether_addr(fdb_info->addr)) 2245 err = dpaa2_switch_port_fdb_add_uc(netdev_priv(dev), 2246 fdb_info->addr); 2247 else 2248 err = dpaa2_switch_port_fdb_add_mc(netdev_priv(dev), 2249 fdb_info->addr); 2250 if (err) 2251 break; 2252 fdb_info->offloaded = true; 2253 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, 2254 &fdb_info->info, NULL); 2255 break; 2256 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2257 if (!fdb_info->added_by_user || fdb_info->is_local) 2258 break; 2259 if (is_unicast_ether_addr(fdb_info->addr)) 2260 dpaa2_switch_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr); 2261 else 2262 dpaa2_switch_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr); 2263 break; 2264 } 2265 2266 rtnl_unlock(); 2267 kfree(switchdev_work->fdb_info.addr); 2268 kfree(switchdev_work); 2269 dev_put(dev); 2270} 2271 2272/* Called under rcu_read_lock() */ 2273static int dpaa2_switch_port_event(struct notifier_block *nb, 2274 unsigned long event, void *ptr) 2275{ 2276 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2277 struct ethsw_port_priv *port_priv = netdev_priv(dev); 2278 struct ethsw_switchdev_event_work *switchdev_work; 2279 struct switchdev_notifier_fdb_info *fdb_info = ptr; 2280 struct ethsw_core *ethsw = port_priv->ethsw_data; 2281 2282 if (event == SWITCHDEV_PORT_ATTR_SET) 2283 return dpaa2_switch_port_attr_set_event(dev, ptr); 2284 2285 if (!dpaa2_switch_port_dev_check(dev)) 2286 return NOTIFY_DONE; 2287 2288 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2289 if (!switchdev_work) 2290 return NOTIFY_BAD; 2291 2292 INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work); 2293 switchdev_work->dev = dev; 2294 switchdev_work->event = event; 2295 2296 switch (event) { 2297 case SWITCHDEV_FDB_ADD_TO_DEVICE: 2298 case SWITCHDEV_FDB_DEL_TO_DEVICE: 2299 memcpy(&switchdev_work->fdb_info, ptr, 2300 sizeof(switchdev_work->fdb_info)); 2301 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2302 if (!switchdev_work->fdb_info.addr) 2303 goto err_addr_alloc; 2304 2305 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2306 fdb_info->addr); 2307 2308 /* Take a reference on the device to avoid being freed. */ 2309 dev_hold(dev); 2310 break; 2311 default: 2312 kfree(switchdev_work); 2313 return NOTIFY_DONE; 2314 } 2315 2316 queue_work(ethsw->workqueue, &switchdev_work->work); 2317 2318 return NOTIFY_DONE; 2319 2320err_addr_alloc: 2321 kfree(switchdev_work); 2322 return NOTIFY_BAD; 2323} 2324 2325static int dpaa2_switch_port_obj_event(unsigned long event, 2326 struct net_device *netdev, 2327 struct switchdev_notifier_port_obj_info *port_obj_info) 2328{ 2329 int err = -EOPNOTSUPP; 2330 2331 if (!dpaa2_switch_port_dev_check(netdev)) 2332 return NOTIFY_DONE; 2333 2334 switch (event) { 2335 case SWITCHDEV_PORT_OBJ_ADD: 2336 err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj); 2337 break; 2338 case SWITCHDEV_PORT_OBJ_DEL: 2339 err = dpaa2_switch_port_obj_del(netdev, port_obj_info->obj); 2340 break; 2341 } 2342 2343 port_obj_info->handled = true; 2344 return notifier_from_errno(err); 2345} 2346 2347static int dpaa2_switch_port_blocking_event(struct notifier_block *nb, 2348 unsigned long event, void *ptr) 2349{ 2350 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 2351 2352 switch (event) { 2353 case SWITCHDEV_PORT_OBJ_ADD: 2354 case SWITCHDEV_PORT_OBJ_DEL: 2355 return dpaa2_switch_port_obj_event(event, dev, ptr); 2356 case SWITCHDEV_PORT_ATTR_SET: 2357 return dpaa2_switch_port_attr_set_event(dev, ptr); 2358 } 2359 2360 return NOTIFY_DONE; 2361} 2362 2363/* Build a linear skb based on a single-buffer frame descriptor */ 2364static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw, 2365 const struct dpaa2_fd *fd) 2366{ 2367 u16 fd_offset = dpaa2_fd_get_offset(fd); 2368 dma_addr_t addr = dpaa2_fd_get_addr(fd); 2369 u32 fd_length = dpaa2_fd_get_len(fd); 2370 struct device *dev = ethsw->dev; 2371 struct sk_buff *skb = NULL; 2372 void *fd_vaddr; 2373 2374 fd_vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, addr); 2375 dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE, 2376 DMA_FROM_DEVICE); 2377 2378 skb = build_skb(fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE + 2379 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); 2380 if (unlikely(!skb)) { 2381 dev_err(dev, "build_skb() failed\n"); 2382 return NULL; 2383 } 2384 2385 skb_reserve(skb, fd_offset); 2386 skb_put(skb, fd_length); 2387 2388 ethsw->buf_count--; 2389 2390 return skb; 2391} 2392 2393static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq, 2394 const struct dpaa2_fd *fd) 2395{ 2396 dpaa2_switch_free_fd(fq->ethsw, fd); 2397} 2398 2399static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq, 2400 const struct dpaa2_fd *fd) 2401{ 2402 struct ethsw_core *ethsw = fq->ethsw; 2403 struct ethsw_port_priv *port_priv; 2404 struct net_device *netdev; 2405 struct vlan_ethhdr *hdr; 2406 struct sk_buff *skb; 2407 u16 vlan_tci, vid; 2408 int if_id, err; 2409 2410 /* get switch ingress interface ID */ 2411 if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF; 2412 2413 if (if_id >= ethsw->sw_attr.num_ifs) { 2414 dev_err(ethsw->dev, "Frame received from unknown interface!\n"); 2415 goto err_free_fd; 2416 } 2417 port_priv = ethsw->ports[if_id]; 2418 netdev = port_priv->netdev; 2419 2420 /* build the SKB based on the FD received */ 2421 if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) { 2422 if (net_ratelimit()) { 2423 netdev_err(netdev, "Received invalid frame format\n"); 2424 goto err_free_fd; 2425 } 2426 } 2427 2428 skb = dpaa2_switch_build_linear_skb(ethsw, fd); 2429 if (unlikely(!skb)) 2430 goto err_free_fd; 2431 2432 skb_reset_mac_header(skb); 2433 2434 /* Remove the VLAN header if the packet that we just received has a vid 2435 * equal to the port PVIDs. Since the dpaa2-switch can operate only in 2436 * VLAN-aware mode and no alterations are made on the packet when it's 2437 * redirected/mirrored to the control interface, we are sure that there 2438 * will always be a VLAN header present. 2439 */ 2440 hdr = vlan_eth_hdr(skb); 2441 vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK; 2442 if (vid == port_priv->pvid) { 2443 err = __skb_vlan_pop(skb, &vlan_tci); 2444 if (err) { 2445 dev_info(ethsw->dev, "__skb_vlan_pop() returned %d", err); 2446 goto err_free_fd; 2447 } 2448 } 2449 2450 skb->dev = netdev; 2451 skb->protocol = eth_type_trans(skb, skb->dev); 2452 2453 /* Setup the offload_fwd_mark only if the port is under a bridge */ 2454 skb->offload_fwd_mark = !!(port_priv->fdb->bridge_dev); 2455 2456 netif_receive_skb(skb); 2457 2458 return; 2459 2460err_free_fd: 2461 dpaa2_switch_free_fd(ethsw, fd); 2462} 2463 2464static void dpaa2_switch_detect_features(struct ethsw_core *ethsw) 2465{ 2466 ethsw->features = 0; 2467 2468 if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6)) 2469 ethsw->features |= ETHSW_FEATURE_MAC_ADDR; 2470} 2471 2472static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw) 2473{ 2474 struct dpsw_ctrl_if_attr ctrl_if_attr; 2475 struct device *dev = ethsw->dev; 2476 int i = 0; 2477 int err; 2478 2479 err = dpsw_ctrl_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 2480 &ctrl_if_attr); 2481 if (err) { 2482 dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n", err); 2483 return err; 2484 } 2485 2486 ethsw->fq[i].fqid = ctrl_if_attr.rx_fqid; 2487 ethsw->fq[i].ethsw = ethsw; 2488 ethsw->fq[i++].type = DPSW_QUEUE_RX; 2489 2490 ethsw->fq[i].fqid = ctrl_if_attr.tx_err_conf_fqid; 2491 ethsw->fq[i].ethsw = ethsw; 2492 ethsw->fq[i++].type = DPSW_QUEUE_TX_ERR_CONF; 2493 2494 return 0; 2495} 2496 2497/* Free buffers acquired from the buffer pool or which were meant to 2498 * be released in the pool 2499 */ 2500static void dpaa2_switch_free_bufs(struct ethsw_core *ethsw, u64 *buf_array, int count) 2501{ 2502 struct device *dev = ethsw->dev; 2503 void *vaddr; 2504 int i; 2505 2506 for (i = 0; i < count; i++) { 2507 vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, buf_array[i]); 2508 dma_unmap_page(dev, buf_array[i], DPAA2_SWITCH_RX_BUF_SIZE, 2509 DMA_FROM_DEVICE); 2510 free_pages((unsigned long)vaddr, 0); 2511 } 2512} 2513 2514/* Perform a single release command to add buffers 2515 * to the specified buffer pool 2516 */ 2517static int dpaa2_switch_add_bufs(struct ethsw_core *ethsw, u16 bpid) 2518{ 2519 struct device *dev = ethsw->dev; 2520 u64 buf_array[BUFS_PER_CMD]; 2521 struct page *page; 2522 int retries = 0; 2523 dma_addr_t addr; 2524 int err; 2525 int i; 2526 2527 for (i = 0; i < BUFS_PER_CMD; i++) { 2528 /* Allocate one page for each Rx buffer. WRIOP sees 2529 * the entire page except for a tailroom reserved for 2530 * skb shared info 2531 */ 2532 page = dev_alloc_pages(0); 2533 if (!page) { 2534 dev_err(dev, "buffer allocation failed\n"); 2535 goto err_alloc; 2536 } 2537 2538 addr = dma_map_page(dev, page, 0, DPAA2_SWITCH_RX_BUF_SIZE, 2539 DMA_FROM_DEVICE); 2540 if (dma_mapping_error(dev, addr)) { 2541 dev_err(dev, "dma_map_single() failed\n"); 2542 goto err_map; 2543 } 2544 buf_array[i] = addr; 2545 } 2546 2547release_bufs: 2548 /* In case the portal is busy, retry until successful or 2549 * max retries hit. 2550 */ 2551 while ((err = dpaa2_io_service_release(NULL, bpid, 2552 buf_array, i)) == -EBUSY) { 2553 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) 2554 break; 2555 2556 cpu_relax(); 2557 } 2558 2559 /* If release command failed, clean up and bail out. */ 2560 if (err) { 2561 dpaa2_switch_free_bufs(ethsw, buf_array, i); 2562 return 0; 2563 } 2564 2565 return i; 2566 2567err_map: 2568 __free_pages(page, 0); 2569err_alloc: 2570 /* If we managed to allocate at least some buffers, 2571 * release them to hardware 2572 */ 2573 if (i) 2574 goto release_bufs; 2575 2576 return 0; 2577} 2578 2579static int dpaa2_switch_refill_bp(struct ethsw_core *ethsw) 2580{ 2581 int *count = ðsw->buf_count; 2582 int new_count; 2583 int err = 0; 2584 2585 if (unlikely(*count < DPAA2_ETHSW_REFILL_THRESH)) { 2586 do { 2587 new_count = dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2588 if (unlikely(!new_count)) { 2589 /* Out of memory; abort for now, we'll 2590 * try later on 2591 */ 2592 break; 2593 } 2594 *count += new_count; 2595 } while (*count < DPAA2_ETHSW_NUM_BUFS); 2596 2597 if (unlikely(*count < DPAA2_ETHSW_NUM_BUFS)) 2598 err = -ENOMEM; 2599 } 2600 2601 return err; 2602} 2603 2604static int dpaa2_switch_seed_bp(struct ethsw_core *ethsw) 2605{ 2606 int *count, i; 2607 2608 for (i = 0; i < DPAA2_ETHSW_NUM_BUFS; i += BUFS_PER_CMD) { 2609 count = ðsw->buf_count; 2610 *count += dpaa2_switch_add_bufs(ethsw, ethsw->bpid); 2611 2612 if (unlikely(*count < BUFS_PER_CMD)) 2613 return -ENOMEM; 2614 } 2615 2616 return 0; 2617} 2618 2619static void dpaa2_switch_drain_bp(struct ethsw_core *ethsw) 2620{ 2621 u64 buf_array[BUFS_PER_CMD]; 2622 int ret; 2623 2624 do { 2625 ret = dpaa2_io_service_acquire(NULL, ethsw->bpid, 2626 buf_array, BUFS_PER_CMD); 2627 if (ret < 0) { 2628 dev_err(ethsw->dev, 2629 "dpaa2_io_service_acquire() = %d\n", ret); 2630 return; 2631 } 2632 dpaa2_switch_free_bufs(ethsw, buf_array, ret); 2633 2634 } while (ret); 2635} 2636 2637static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw) 2638{ 2639 struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 }; 2640 struct device *dev = ethsw->dev; 2641 struct fsl_mc_device *dpbp_dev; 2642 struct dpbp_attr dpbp_attrs; 2643 int err; 2644 2645 err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPBP, 2646 &dpbp_dev); 2647 if (err) { 2648 if (err == -ENXIO) 2649 err = -EPROBE_DEFER; 2650 else 2651 dev_err(dev, "DPBP device allocation failed\n"); 2652 return err; 2653 } 2654 ethsw->dpbp_dev = dpbp_dev; 2655 2656 err = dpbp_open(ethsw->mc_io, 0, dpbp_dev->obj_desc.id, 2657 &dpbp_dev->mc_handle); 2658 if (err) { 2659 dev_err(dev, "dpbp_open() failed\n"); 2660 goto err_open; 2661 } 2662 2663 err = dpbp_reset(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2664 if (err) { 2665 dev_err(dev, "dpbp_reset() failed\n"); 2666 goto err_reset; 2667 } 2668 2669 err = dpbp_enable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2670 if (err) { 2671 dev_err(dev, "dpbp_enable() failed\n"); 2672 goto err_enable; 2673 } 2674 2675 err = dpbp_get_attributes(ethsw->mc_io, 0, dpbp_dev->mc_handle, 2676 &dpbp_attrs); 2677 if (err) { 2678 dev_err(dev, "dpbp_get_attributes() failed\n"); 2679 goto err_get_attr; 2680 } 2681 2682 dpsw_ctrl_if_pools_cfg.num_dpbp = 1; 2683 dpsw_ctrl_if_pools_cfg.pools[0].dpbp_id = dpbp_attrs.id; 2684 dpsw_ctrl_if_pools_cfg.pools[0].buffer_size = DPAA2_SWITCH_RX_BUF_SIZE; 2685 dpsw_ctrl_if_pools_cfg.pools[0].backup_pool = 0; 2686 2687 err = dpsw_ctrl_if_set_pools(ethsw->mc_io, 0, ethsw->dpsw_handle, 2688 &dpsw_ctrl_if_pools_cfg); 2689 if (err) { 2690 dev_err(dev, "dpsw_ctrl_if_set_pools() failed\n"); 2691 goto err_get_attr; 2692 } 2693 ethsw->bpid = dpbp_attrs.id; 2694 2695 return 0; 2696 2697err_get_attr: 2698 dpbp_disable(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2699err_enable: 2700err_reset: 2701 dpbp_close(ethsw->mc_io, 0, dpbp_dev->mc_handle); 2702err_open: 2703 fsl_mc_object_free(dpbp_dev); 2704 return err; 2705} 2706 2707static void dpaa2_switch_free_dpbp(struct ethsw_core *ethsw) 2708{ 2709 dpbp_disable(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2710 dpbp_close(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle); 2711 fsl_mc_object_free(ethsw->dpbp_dev); 2712} 2713 2714static int dpaa2_switch_alloc_rings(struct ethsw_core *ethsw) 2715{ 2716 int i; 2717 2718 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2719 ethsw->fq[i].store = 2720 dpaa2_io_store_create(DPAA2_SWITCH_STORE_SIZE, 2721 ethsw->dev); 2722 if (!ethsw->fq[i].store) { 2723 dev_err(ethsw->dev, "dpaa2_io_store_create failed\n"); 2724 while (--i >= 0) 2725 dpaa2_io_store_destroy(ethsw->fq[i].store); 2726 return -ENOMEM; 2727 } 2728 } 2729 2730 return 0; 2731} 2732 2733static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw) 2734{ 2735 int i; 2736 2737 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2738 dpaa2_io_store_destroy(ethsw->fq[i].store); 2739} 2740 2741static int dpaa2_switch_pull_fq(struct dpaa2_switch_fq *fq) 2742{ 2743 int err, retries = 0; 2744 2745 /* Try to pull from the FQ while the portal is busy and we didn't hit 2746 * the maximum number fo retries 2747 */ 2748 do { 2749 err = dpaa2_io_service_pull_fq(NULL, fq->fqid, fq->store); 2750 cpu_relax(); 2751 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2752 2753 if (unlikely(err)) 2754 dev_err(fq->ethsw->dev, "dpaa2_io_service_pull err %d", err); 2755 2756 return err; 2757} 2758 2759/* Consume all frames pull-dequeued into the store */ 2760static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq) 2761{ 2762 struct ethsw_core *ethsw = fq->ethsw; 2763 int cleaned = 0, is_last; 2764 struct dpaa2_dq *dq; 2765 int retries = 0; 2766 2767 do { 2768 /* Get the next available FD from the store */ 2769 dq = dpaa2_io_store_next(fq->store, &is_last); 2770 if (unlikely(!dq)) { 2771 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) { 2772 dev_err_once(ethsw->dev, 2773 "No valid dequeue response\n"); 2774 return -ETIMEDOUT; 2775 } 2776 continue; 2777 } 2778 2779 if (fq->type == DPSW_QUEUE_RX) 2780 dpaa2_switch_rx(fq, dpaa2_dq_fd(dq)); 2781 else 2782 dpaa2_switch_tx_conf(fq, dpaa2_dq_fd(dq)); 2783 cleaned++; 2784 2785 } while (!is_last); 2786 2787 return cleaned; 2788} 2789 2790/* NAPI poll routine */ 2791static int dpaa2_switch_poll(struct napi_struct *napi, int budget) 2792{ 2793 int err, cleaned = 0, store_cleaned, work_done; 2794 struct dpaa2_switch_fq *fq; 2795 int retries = 0; 2796 2797 fq = container_of(napi, struct dpaa2_switch_fq, napi); 2798 2799 do { 2800 err = dpaa2_switch_pull_fq(fq); 2801 if (unlikely(err)) 2802 break; 2803 2804 /* Refill pool if appropriate */ 2805 dpaa2_switch_refill_bp(fq->ethsw); 2806 2807 store_cleaned = dpaa2_switch_store_consume(fq); 2808 cleaned += store_cleaned; 2809 2810 if (cleaned >= budget) { 2811 work_done = budget; 2812 goto out; 2813 } 2814 2815 } while (store_cleaned); 2816 2817 /* We didn't consume the entire budget, so finish napi and re-enable 2818 * data availability notifications 2819 */ 2820 napi_complete_done(napi, cleaned); 2821 do { 2822 err = dpaa2_io_service_rearm(NULL, &fq->nctx); 2823 cpu_relax(); 2824 } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES); 2825 2826 work_done = max(cleaned, 1); 2827out: 2828 2829 return work_done; 2830} 2831 2832static void dpaa2_switch_fqdan_cb(struct dpaa2_io_notification_ctx *nctx) 2833{ 2834 struct dpaa2_switch_fq *fq; 2835 2836 fq = container_of(nctx, struct dpaa2_switch_fq, nctx); 2837 2838 napi_schedule(&fq->napi); 2839} 2840 2841static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw) 2842{ 2843 struct dpsw_ctrl_if_queue_cfg queue_cfg; 2844 struct dpaa2_io_notification_ctx *nctx; 2845 int err, i, j; 2846 2847 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) { 2848 nctx = ðsw->fq[i].nctx; 2849 2850 /* Register a new software context for the FQID. 2851 * By using NULL as the first parameter, we specify that we do 2852 * not care on which cpu are interrupts received for this queue 2853 */ 2854 nctx->is_cdan = 0; 2855 nctx->id = ethsw->fq[i].fqid; 2856 nctx->desired_cpu = DPAA2_IO_ANY_CPU; 2857 nctx->cb = dpaa2_switch_fqdan_cb; 2858 err = dpaa2_io_service_register(NULL, nctx, ethsw->dev); 2859 if (err) { 2860 err = -EPROBE_DEFER; 2861 goto err_register; 2862 } 2863 2864 queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST | 2865 DPSW_CTRL_IF_QUEUE_OPT_USER_CTX; 2866 queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO; 2867 queue_cfg.dest_cfg.dest_id = nctx->dpio_id; 2868 queue_cfg.dest_cfg.priority = 0; 2869 queue_cfg.user_ctx = nctx->qman64; 2870 2871 err = dpsw_ctrl_if_set_queue(ethsw->mc_io, 0, 2872 ethsw->dpsw_handle, 2873 ethsw->fq[i].type, 2874 &queue_cfg); 2875 if (err) 2876 goto err_set_queue; 2877 } 2878 2879 return 0; 2880 2881err_set_queue: 2882 dpaa2_io_service_deregister(NULL, nctx, ethsw->dev); 2883err_register: 2884 for (j = 0; j < i; j++) 2885 dpaa2_io_service_deregister(NULL, ðsw->fq[j].nctx, 2886 ethsw->dev); 2887 2888 return err; 2889} 2890 2891static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw) 2892{ 2893 int i; 2894 2895 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 2896 dpaa2_io_service_deregister(NULL, ðsw->fq[i].nctx, 2897 ethsw->dev); 2898} 2899 2900static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw) 2901{ 2902 int err; 2903 2904 /* setup FQs for Rx and Tx Conf */ 2905 err = dpaa2_switch_setup_fqs(ethsw); 2906 if (err) 2907 return err; 2908 2909 /* setup the buffer pool needed on the Rx path */ 2910 err = dpaa2_switch_setup_dpbp(ethsw); 2911 if (err) 2912 return err; 2913 2914 err = dpaa2_switch_alloc_rings(ethsw); 2915 if (err) 2916 goto err_free_dpbp; 2917 2918 err = dpaa2_switch_setup_dpio(ethsw); 2919 if (err) 2920 goto err_destroy_rings; 2921 2922 err = dpaa2_switch_seed_bp(ethsw); 2923 if (err) 2924 goto err_deregister_dpio; 2925 2926 err = dpsw_ctrl_if_enable(ethsw->mc_io, 0, ethsw->dpsw_handle); 2927 if (err) { 2928 dev_err(ethsw->dev, "dpsw_ctrl_if_enable err %d\n", err); 2929 goto err_drain_dpbp; 2930 } 2931 2932 return 0; 2933 2934err_drain_dpbp: 2935 dpaa2_switch_drain_bp(ethsw); 2936err_deregister_dpio: 2937 dpaa2_switch_free_dpio(ethsw); 2938err_destroy_rings: 2939 dpaa2_switch_destroy_rings(ethsw); 2940err_free_dpbp: 2941 dpaa2_switch_free_dpbp(ethsw); 2942 2943 return err; 2944} 2945 2946static void dpaa2_switch_remove_port(struct ethsw_core *ethsw, 2947 u16 port_idx) 2948{ 2949 struct ethsw_port_priv *port_priv = ethsw->ports[port_idx]; 2950 2951 dpaa2_switch_port_disconnect_mac(port_priv); 2952 free_netdev(port_priv->netdev); 2953 ethsw->ports[port_idx] = NULL; 2954} 2955 2956static int dpaa2_switch_init(struct fsl_mc_device *sw_dev) 2957{ 2958 struct device *dev = &sw_dev->dev; 2959 struct ethsw_core *ethsw = dev_get_drvdata(dev); 2960 struct dpsw_vlan_if_cfg vcfg = {0}; 2961 struct dpsw_tci_cfg tci_cfg = {0}; 2962 struct dpsw_stp_cfg stp_cfg; 2963 int err; 2964 u16 i; 2965 2966 ethsw->dev_id = sw_dev->obj_desc.id; 2967 2968 err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, ðsw->dpsw_handle); 2969 if (err) { 2970 dev_err(dev, "dpsw_open err %d\n", err); 2971 return err; 2972 } 2973 2974 err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 2975 ðsw->sw_attr); 2976 if (err) { 2977 dev_err(dev, "dpsw_get_attributes err %d\n", err); 2978 goto err_close; 2979 } 2980 2981 err = dpsw_get_api_version(ethsw->mc_io, 0, 2982 ðsw->major, 2983 ðsw->minor); 2984 if (err) { 2985 dev_err(dev, "dpsw_get_api_version err %d\n", err); 2986 goto err_close; 2987 } 2988 2989 /* Minimum supported DPSW version check */ 2990 if (ethsw->major < DPSW_MIN_VER_MAJOR || 2991 (ethsw->major == DPSW_MIN_VER_MAJOR && 2992 ethsw->minor < DPSW_MIN_VER_MINOR)) { 2993 dev_err(dev, "DPSW version %d:%d not supported. Use firmware 10.28.0 or greater.\n", 2994 ethsw->major, ethsw->minor); 2995 err = -EOPNOTSUPP; 2996 goto err_close; 2997 } 2998 2999 if (!dpaa2_switch_supports_cpu_traffic(ethsw)) { 3000 err = -EOPNOTSUPP; 3001 goto err_close; 3002 } 3003 3004 dpaa2_switch_detect_features(ethsw); 3005 3006 err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle); 3007 if (err) { 3008 dev_err(dev, "dpsw_reset err %d\n", err); 3009 goto err_close; 3010 } 3011 3012 stp_cfg.vlan_id = DEFAULT_VLAN_ID; 3013 stp_cfg.state = DPSW_STP_STATE_FORWARDING; 3014 3015 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3016 err = dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i); 3017 if (err) { 3018 dev_err(dev, "dpsw_if_disable err %d\n", err); 3019 goto err_close; 3020 } 3021 3022 err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i, 3023 &stp_cfg); 3024 if (err) { 3025 dev_err(dev, "dpsw_if_set_stp err %d for port %d\n", 3026 err, i); 3027 goto err_close; 3028 } 3029 3030 /* Switch starts with all ports configured to VLAN 1. Need to 3031 * remove this setting to allow configuration at bridge join 3032 */ 3033 vcfg.num_ifs = 1; 3034 vcfg.if_id[0] = i; 3035 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle, 3036 DEFAULT_VLAN_ID, &vcfg); 3037 if (err) { 3038 dev_err(dev, "dpsw_vlan_remove_if_untagged err %d\n", 3039 err); 3040 goto err_close; 3041 } 3042 3043 tci_cfg.vlan_id = 4095; 3044 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, i, &tci_cfg); 3045 if (err) { 3046 dev_err(dev, "dpsw_if_set_tci err %d\n", err); 3047 goto err_close; 3048 } 3049 3050 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle, 3051 DEFAULT_VLAN_ID, &vcfg); 3052 if (err) { 3053 dev_err(dev, "dpsw_vlan_remove_if err %d\n", err); 3054 goto err_close; 3055 } 3056 } 3057 3058 err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, DEFAULT_VLAN_ID); 3059 if (err) { 3060 dev_err(dev, "dpsw_vlan_remove err %d\n", err); 3061 goto err_close; 3062 } 3063 3064 ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered", 3065 WQ_MEM_RECLAIM, "ethsw", 3066 ethsw->sw_attr.id); 3067 if (!ethsw->workqueue) { 3068 err = -ENOMEM; 3069 goto err_close; 3070 } 3071 3072 err = dpsw_fdb_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, 0); 3073 if (err) 3074 goto err_destroy_ordered_workqueue; 3075 3076 err = dpaa2_switch_ctrl_if_setup(ethsw); 3077 if (err) 3078 goto err_destroy_ordered_workqueue; 3079 3080 return 0; 3081 3082err_destroy_ordered_workqueue: 3083 destroy_workqueue(ethsw->workqueue); 3084 3085err_close: 3086 dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3087 return err; 3088} 3089 3090/* Add an ACL to redirect frames with specific destination MAC address to 3091 * control interface 3092 */ 3093static int dpaa2_switch_port_trap_mac_addr(struct ethsw_port_priv *port_priv, 3094 const char *mac) 3095{ 3096 struct dpaa2_switch_acl_entry acl_entry = {0}; 3097 3098 /* Match on the destination MAC address */ 3099 ether_addr_copy(acl_entry.key.match.l2_dest_mac, mac); 3100 eth_broadcast_addr(acl_entry.key.mask.l2_dest_mac); 3101 3102 /* Trap to CPU */ 3103 acl_entry.cfg.precedence = 0; 3104 acl_entry.cfg.result.action = DPSW_ACL_ACTION_REDIRECT_TO_CTRL_IF; 3105 3106 return dpaa2_switch_acl_entry_add(port_priv->filter_block, &acl_entry); 3107} 3108 3109static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port) 3110{ 3111 const char stpa[ETH_ALEN] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x00}; 3112 struct switchdev_obj_port_vlan vlan = { 3113 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 3114 .vid = DEFAULT_VLAN_ID, 3115 .flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID, 3116 }; 3117 struct net_device *netdev = port_priv->netdev; 3118 struct ethsw_core *ethsw = port_priv->ethsw_data; 3119 struct dpaa2_switch_filter_block *filter_block; 3120 struct dpsw_fdb_cfg fdb_cfg = {0}; 3121 struct dpsw_if_attr dpsw_if_attr; 3122 struct dpaa2_switch_fdb *fdb; 3123 struct dpsw_acl_cfg acl_cfg; 3124 u16 fdb_id, acl_tbl_id; 3125 int err; 3126 3127 /* Get the Tx queue for this specific port */ 3128 err = dpsw_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, 3129 port_priv->idx, &dpsw_if_attr); 3130 if (err) { 3131 netdev_err(netdev, "dpsw_if_get_attributes err %d\n", err); 3132 return err; 3133 } 3134 port_priv->tx_qdid = dpsw_if_attr.qdid; 3135 3136 /* Create a FDB table for this particular switch port */ 3137 fdb_cfg.num_fdb_entries = ethsw->sw_attr.max_fdb_entries / ethsw->sw_attr.num_ifs; 3138 err = dpsw_fdb_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3139 &fdb_id, &fdb_cfg); 3140 if (err) { 3141 netdev_err(netdev, "dpsw_fdb_add err %d\n", err); 3142 return err; 3143 } 3144 3145 /* Find an unused dpaa2_switch_fdb structure and use it */ 3146 fdb = dpaa2_switch_fdb_get_unused(ethsw); 3147 fdb->fdb_id = fdb_id; 3148 fdb->in_use = true; 3149 fdb->bridge_dev = NULL; 3150 port_priv->fdb = fdb; 3151 3152 /* We need to add VLAN 1 as the PVID on this port until it is under a 3153 * bridge since the DPAA2 switch is not able to handle the traffic in a 3154 * VLAN unaware fashion 3155 */ 3156 err = dpaa2_switch_port_vlans_add(netdev, &vlan); 3157 if (err) 3158 return err; 3159 3160 /* Setup the egress flooding domains (broadcast, unknown unicast */ 3161 err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id); 3162 if (err) 3163 return err; 3164 3165 /* Create an ACL table to be used by this switch port */ 3166 acl_cfg.max_entries = DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES; 3167 err = dpsw_acl_add(ethsw->mc_io, 0, ethsw->dpsw_handle, 3168 &acl_tbl_id, &acl_cfg); 3169 if (err) { 3170 netdev_err(netdev, "dpsw_acl_add err %d\n", err); 3171 return err; 3172 } 3173 3174 filter_block = dpaa2_switch_filter_block_get_unused(ethsw); 3175 filter_block->ethsw = ethsw; 3176 filter_block->acl_id = acl_tbl_id; 3177 filter_block->in_use = true; 3178 filter_block->num_acl_rules = 0; 3179 INIT_LIST_HEAD(&filter_block->acl_entries); 3180 INIT_LIST_HEAD(&filter_block->mirror_entries); 3181 3182 err = dpaa2_switch_port_acl_tbl_bind(port_priv, filter_block); 3183 if (err) 3184 return err; 3185 3186 err = dpaa2_switch_port_trap_mac_addr(port_priv, stpa); 3187 if (err) 3188 return err; 3189 3190 return err; 3191} 3192 3193static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw) 3194{ 3195 dpsw_ctrl_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3196 dpaa2_switch_free_dpio(ethsw); 3197 dpaa2_switch_destroy_rings(ethsw); 3198 dpaa2_switch_drain_bp(ethsw); 3199 dpaa2_switch_free_dpbp(ethsw); 3200} 3201 3202static void dpaa2_switch_teardown(struct fsl_mc_device *sw_dev) 3203{ 3204 struct device *dev = &sw_dev->dev; 3205 struct ethsw_core *ethsw = dev_get_drvdata(dev); 3206 int err; 3207 3208 dpaa2_switch_ctrl_if_teardown(ethsw); 3209 3210 destroy_workqueue(ethsw->workqueue); 3211 3212 err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle); 3213 if (err) 3214 dev_warn(dev, "dpsw_close err %d\n", err); 3215} 3216 3217static void dpaa2_switch_remove(struct fsl_mc_device *sw_dev) 3218{ 3219 struct ethsw_port_priv *port_priv; 3220 struct ethsw_core *ethsw; 3221 struct device *dev; 3222 int i; 3223 3224 dev = &sw_dev->dev; 3225 ethsw = dev_get_drvdata(dev); 3226 3227 dpaa2_switch_teardown_irqs(sw_dev); 3228 3229 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3230 3231 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3232 port_priv = ethsw->ports[i]; 3233 unregister_netdev(port_priv->netdev); 3234 dpaa2_switch_remove_port(ethsw, i); 3235 } 3236 3237 kfree(ethsw->fdbs); 3238 kfree(ethsw->filter_blocks); 3239 kfree(ethsw->ports); 3240 3241 dpaa2_switch_teardown(sw_dev); 3242 3243 fsl_mc_portal_free(ethsw->mc_io); 3244 3245 kfree(ethsw); 3246 3247 dev_set_drvdata(dev, NULL); 3248} 3249 3250static int dpaa2_switch_probe_port(struct ethsw_core *ethsw, 3251 u16 port_idx) 3252{ 3253 struct ethsw_port_priv *port_priv; 3254 struct device *dev = ethsw->dev; 3255 struct net_device *port_netdev; 3256 int err; 3257 3258 port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv)); 3259 if (!port_netdev) { 3260 dev_err(dev, "alloc_etherdev error\n"); 3261 return -ENOMEM; 3262 } 3263 3264 port_priv = netdev_priv(port_netdev); 3265 port_priv->netdev = port_netdev; 3266 port_priv->ethsw_data = ethsw; 3267 3268 mutex_init(&port_priv->mac_lock); 3269 3270 port_priv->idx = port_idx; 3271 port_priv->stp_state = BR_STATE_FORWARDING; 3272 3273 SET_NETDEV_DEV(port_netdev, dev); 3274 port_netdev->netdev_ops = &dpaa2_switch_port_ops; 3275 port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops; 3276 3277 port_netdev->needed_headroom = DPAA2_SWITCH_NEEDED_HEADROOM; 3278 3279 port_priv->bcast_flood = true; 3280 port_priv->ucast_flood = true; 3281 3282 /* Set MTU limits */ 3283 port_netdev->min_mtu = ETH_MIN_MTU; 3284 port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH; 3285 3286 /* Populate the private port structure so that later calls to 3287 * dpaa2_switch_port_init() can use it. 3288 */ 3289 ethsw->ports[port_idx] = port_priv; 3290 3291 /* The DPAA2 switch's ingress path depends on the VLAN table, 3292 * thus we are not able to disable VLAN filtering. 3293 */ 3294 port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER | 3295 NETIF_F_HW_VLAN_STAG_FILTER | 3296 NETIF_F_HW_TC; 3297 3298 err = dpaa2_switch_port_init(port_priv, port_idx); 3299 if (err) 3300 goto err_port_probe; 3301 3302 err = dpaa2_switch_port_set_mac_addr(port_priv); 3303 if (err) 3304 goto err_port_probe; 3305 3306 err = dpaa2_switch_port_set_learning(port_priv, false); 3307 if (err) 3308 goto err_port_probe; 3309 port_priv->learn_ena = false; 3310 3311 err = dpaa2_switch_port_connect_mac(port_priv); 3312 if (err) 3313 goto err_port_probe; 3314 3315 return 0; 3316 3317err_port_probe: 3318 free_netdev(port_netdev); 3319 ethsw->ports[port_idx] = NULL; 3320 3321 return err; 3322} 3323 3324static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev) 3325{ 3326 struct device *dev = &sw_dev->dev; 3327 struct ethsw_core *ethsw; 3328 int i, err; 3329 3330 /* Allocate switch core*/ 3331 ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL); 3332 3333 if (!ethsw) 3334 return -ENOMEM; 3335 3336 ethsw->dev = dev; 3337 ethsw->iommu_domain = iommu_get_domain_for_dev(dev); 3338 dev_set_drvdata(dev, ethsw); 3339 3340 err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, 3341 ðsw->mc_io); 3342 if (err) { 3343 if (err == -ENXIO) 3344 err = -EPROBE_DEFER; 3345 else 3346 dev_err(dev, "fsl_mc_portal_allocate err %d\n", err); 3347 goto err_free_drvdata; 3348 } 3349 3350 err = dpaa2_switch_init(sw_dev); 3351 if (err) 3352 goto err_free_cmdport; 3353 3354 ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports), 3355 GFP_KERNEL); 3356 if (!(ethsw->ports)) { 3357 err = -ENOMEM; 3358 goto err_teardown; 3359 } 3360 3361 ethsw->fdbs = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->fdbs), 3362 GFP_KERNEL); 3363 if (!ethsw->fdbs) { 3364 err = -ENOMEM; 3365 goto err_free_ports; 3366 } 3367 3368 ethsw->filter_blocks = kcalloc(ethsw->sw_attr.num_ifs, 3369 sizeof(*ethsw->filter_blocks), 3370 GFP_KERNEL); 3371 if (!ethsw->filter_blocks) { 3372 err = -ENOMEM; 3373 goto err_free_fdbs; 3374 } 3375 3376 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3377 err = dpaa2_switch_probe_port(ethsw, i); 3378 if (err) 3379 goto err_free_netdev; 3380 } 3381 3382 /* Add a NAPI instance for each of the Rx queues. The first port's 3383 * net_device will be associated with the instances since we do not have 3384 * different queues for each switch ports. 3385 */ 3386 for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) 3387 netif_napi_add(ethsw->ports[0]->netdev, ðsw->fq[i].napi, 3388 dpaa2_switch_poll); 3389 3390 /* Setup IRQs */ 3391 err = dpaa2_switch_setup_irqs(sw_dev); 3392 if (err) 3393 goto err_stop; 3394 3395 /* By convention, if the mirror port is equal to the number of switch 3396 * interfaces, then mirroring of any kind is disabled. 3397 */ 3398 ethsw->mirror_port = ethsw->sw_attr.num_ifs; 3399 3400 /* Register the netdev only when the entire setup is done and the 3401 * switch port interfaces are ready to receive traffic 3402 */ 3403 for (i = 0; i < ethsw->sw_attr.num_ifs; i++) { 3404 err = register_netdev(ethsw->ports[i]->netdev); 3405 if (err < 0) { 3406 dev_err(dev, "register_netdev error %d\n", err); 3407 goto err_unregister_ports; 3408 } 3409 } 3410 3411 return 0; 3412 3413err_unregister_ports: 3414 for (i--; i >= 0; i--) 3415 unregister_netdev(ethsw->ports[i]->netdev); 3416 dpaa2_switch_teardown_irqs(sw_dev); 3417err_stop: 3418 dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle); 3419err_free_netdev: 3420 for (i--; i >= 0; i--) 3421 dpaa2_switch_remove_port(ethsw, i); 3422 kfree(ethsw->filter_blocks); 3423err_free_fdbs: 3424 kfree(ethsw->fdbs); 3425err_free_ports: 3426 kfree(ethsw->ports); 3427 3428err_teardown: 3429 dpaa2_switch_teardown(sw_dev); 3430 3431err_free_cmdport: 3432 fsl_mc_portal_free(ethsw->mc_io); 3433 3434err_free_drvdata: 3435 kfree(ethsw); 3436 dev_set_drvdata(dev, NULL); 3437 3438 return err; 3439} 3440 3441static const struct fsl_mc_device_id dpaa2_switch_match_id_table[] = { 3442 { 3443 .vendor = FSL_MC_VENDOR_FREESCALE, 3444 .obj_type = "dpsw", 3445 }, 3446 { .vendor = 0x0 } 3447}; 3448MODULE_DEVICE_TABLE(fslmc, dpaa2_switch_match_id_table); 3449 3450static struct fsl_mc_driver dpaa2_switch_drv = { 3451 .driver = { 3452 .name = KBUILD_MODNAME, 3453 }, 3454 .probe = dpaa2_switch_probe, 3455 .remove = dpaa2_switch_remove, 3456 .match_id_table = dpaa2_switch_match_id_table 3457}; 3458 3459static struct notifier_block dpaa2_switch_port_nb __read_mostly = { 3460 .notifier_call = dpaa2_switch_port_netdevice_event, 3461}; 3462 3463static struct notifier_block dpaa2_switch_port_switchdev_nb = { 3464 .notifier_call = dpaa2_switch_port_event, 3465}; 3466 3467static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb = { 3468 .notifier_call = dpaa2_switch_port_blocking_event, 3469}; 3470 3471static int dpaa2_switch_register_notifiers(void) 3472{ 3473 int err; 3474 3475 err = register_netdevice_notifier(&dpaa2_switch_port_nb); 3476 if (err) { 3477 pr_err("dpaa2-switch: failed to register net_device notifier (%d)\n", err); 3478 return err; 3479 } 3480 3481 err = register_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3482 if (err) { 3483 pr_err("dpaa2-switch: failed to register switchdev notifier (%d)\n", err); 3484 goto err_switchdev_nb; 3485 } 3486 3487 err = register_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3488 if (err) { 3489 pr_err("dpaa2-switch: failed to register switchdev blocking notifier (%d)\n", err); 3490 goto err_switchdev_blocking_nb; 3491 } 3492 3493 return 0; 3494 3495err_switchdev_blocking_nb: 3496 unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3497err_switchdev_nb: 3498 unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3499 3500 return err; 3501} 3502 3503static void dpaa2_switch_unregister_notifiers(void) 3504{ 3505 int err; 3506 3507 err = unregister_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb); 3508 if (err) 3509 pr_err("dpaa2-switch: failed to unregister switchdev blocking notifier (%d)\n", 3510 err); 3511 3512 err = unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb); 3513 if (err) 3514 pr_err("dpaa2-switch: failed to unregister switchdev notifier (%d)\n", err); 3515 3516 err = unregister_netdevice_notifier(&dpaa2_switch_port_nb); 3517 if (err) 3518 pr_err("dpaa2-switch: failed to unregister net_device notifier (%d)\n", err); 3519} 3520 3521static int __init dpaa2_switch_driver_init(void) 3522{ 3523 int err; 3524 3525 err = fsl_mc_driver_register(&dpaa2_switch_drv); 3526 if (err) 3527 return err; 3528 3529 err = dpaa2_switch_register_notifiers(); 3530 if (err) { 3531 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3532 return err; 3533 } 3534 3535 return 0; 3536} 3537 3538static void __exit dpaa2_switch_driver_exit(void) 3539{ 3540 dpaa2_switch_unregister_notifiers(); 3541 fsl_mc_driver_unregister(&dpaa2_switch_drv); 3542} 3543 3544module_init(dpaa2_switch_driver_init); 3545module_exit(dpaa2_switch_driver_exit); 3546 3547MODULE_LICENSE("GPL v2"); 3548MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver"); 3549