drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * DPAA2 Ethernet Switch driver
   4  *
   5  * Copyright 2014-2016 Freescale Semiconductor Inc.
   6  * Copyright 2017-2021 NXP
   7  *
   8  */
   9
  10 #include <linux/module.h>
  11
  12 #include <linux/interrupt.h>
  13 #include <linux/kthread.h>
  14 #include <linux/workqueue.h>
  15 #include <linux/iommu.h>
  16 #include <net/pkt_cls.h>
  17
  18 #include <linux/fsl/mc.h>
  19
  20 #include "dpaa2-switch.h"
  21
  22 /* Minimal supported DPSW version */
  23 #define DPSW_MIN_VER_MAJOR              8
  24 #define DPSW_MIN_VER_MINOR              9
  25
  26 #define DEFAULT_VLAN_ID                 1
  27
  28 static u16 dpaa2_switch_port_get_fdb_id(struct ethsw_port_priv *port_priv)
  29 {
  30         return port_priv->fdb->fdb_id;
  31 }
  32
  33 static struct dpaa2_switch_fdb *dpaa2_switch_fdb_get_unused(struct ethsw_core *ethsw)
  34 {
  35         int i;
  36
  37         for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
  38                 if (!ethsw->fdbs[i].in_use)
  39                         return &ethsw->fdbs[i];
  40         return NULL;
  41 }
  42
  43 static struct dpaa2_switch_filter_block *
  44 dpaa2_switch_filter_block_get_unused(struct ethsw_core *ethsw)
  45 {
  46         int i;
  47
  48         for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
  49                 if (!ethsw->filter_blocks[i].in_use)
  50                         return &ethsw->filter_blocks[i];
  51         return NULL;
  52 }
  53
  54 static u16 dpaa2_switch_port_set_fdb(struct ethsw_port_priv *port_priv,
  55                                      struct net_device *bridge_dev)
  56 {
  57         struct ethsw_port_priv *other_port_priv = NULL;
  58         struct dpaa2_switch_fdb *fdb;
  59         struct net_device *other_dev;
  60         struct list_head *iter;
  61
  62         /* If we leave a bridge (bridge_dev is NULL), find an unused
  63          * FDB and use that.
  64          */
  65         if (!bridge_dev) {
  66                 fdb = dpaa2_switch_fdb_get_unused(port_priv->ethsw_data);
  67
  68                 /* If there is no unused FDB, we must be the last port that
  69                  * leaves the last bridge, all the others are standalone. We
  70                  * can just keep the FDB that we already have.
  71                  */
  72
  73                 if (!fdb) {
  74                         port_priv->fdb->bridge_dev = NULL;
  75                         return 0;
  76                 }
  77
  78                 port_priv->fdb = fdb;
  79                 port_priv->fdb->in_use = true;
  80                 port_priv->fdb->bridge_dev = NULL;
  81                 return 0;
  82         }
  83
  84         /* The below call to netdev_for_each_lower_dev() demands the RTNL lock
  85          * being held. Assert on it so that it's easier to catch new code
  86          * paths that reach this point without the RTNL lock.
  87          */
  88         ASSERT_RTNL();
  89
  90         /* If part of a bridge, use the FDB of the first dpaa2 switch interface
  91          * to be present in that bridge
  92          */
  93         netdev_for_each_lower_dev(bridge_dev, other_dev, iter) {
  94                 if (!dpaa2_switch_port_dev_check(other_dev))
  95                         continue;
  96
  97                 if (other_dev == port_priv->netdev)
  98                         continue;
  99
 100                 other_port_priv = netdev_priv(other_dev);
 101                 break;
 102         }
 103
 104         /* The current port is about to change its FDB to the one used by the
 105          * first port that joined the bridge.
 106          */
 107         if (other_port_priv) {
 108                 /* The previous FDB is about to become unused, since the
 109                  * interface is no longer standalone.
 110                  */
 111                 port_priv->fdb->in_use = false;
 112                 port_priv->fdb->bridge_dev = NULL;
 113
 114                 /* Get a reference to the new FDB */
 115                 port_priv->fdb = other_port_priv->fdb;
 116         }
 117
 118         /* Keep track of the new upper bridge device */
 119         port_priv->fdb->bridge_dev = bridge_dev;
 120
 121         return 0;
 122 }
 123
 124 static void dpaa2_switch_fdb_get_flood_cfg(struct ethsw_core *ethsw, u16 fdb_id,
 125                                            enum dpsw_flood_type type,
 126                                            struct dpsw_egress_flood_cfg *cfg)
 127 {
 128         int i = 0, j;
 129
 130         memset(cfg, 0, sizeof(*cfg));
 131
 132         /* Add all the DPAA2 switch ports found in the same bridging domain to
 133          * the egress flooding domain
 134          */
 135         for (j = 0; j < ethsw->sw_attr.num_ifs; j++) {
 136                 if (!ethsw->ports[j])
 137                         continue;
 138                 if (ethsw->ports[j]->fdb->fdb_id != fdb_id)
 139                         continue;
 140
 141                 if (type == DPSW_BROADCAST && ethsw->ports[j]->bcast_flood)
 142                         cfg->if_id[i++] = ethsw->ports[j]->idx;
 143                 else if (type == DPSW_FLOODING && ethsw->ports[j]->ucast_flood)
 144                         cfg->if_id[i++] = ethsw->ports[j]->idx;
 145         }
 146
 147         /* Add the CTRL interface to the egress flooding domain */
 148         cfg->if_id[i++] = ethsw->sw_attr.num_ifs;
 149
 150         cfg->fdb_id = fdb_id;
 151         cfg->flood_type = type;
 152         cfg->num_ifs = i;
 153 }
 154
 155 static int dpaa2_switch_fdb_set_egress_flood(struct ethsw_core *ethsw, u16 fdb_id)
 156 {
 157         struct dpsw_egress_flood_cfg flood_cfg;
 158         int err;
 159
 160         /* Setup broadcast flooding domain */
 161         dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_BROADCAST, &flood_cfg);
 162         err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle,
 163                                     &flood_cfg);
 164         if (err) {
 165                 dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err);
 166                 return err;
 167         }
 168
 169         /* Setup unknown flooding domain */
 170         dpaa2_switch_fdb_get_flood_cfg(ethsw, fdb_id, DPSW_FLOODING, &flood_cfg);
 171         err = dpsw_set_egress_flood(ethsw->mc_io, 0, ethsw->dpsw_handle,
 172                                     &flood_cfg);
 173         if (err) {
 174                 dev_err(ethsw->dev, "dpsw_set_egress_flood() = %d\n", err);
 175                 return err;
 176         }
 177
 178         return 0;
 179 }
 180
 181 static void *dpaa2_iova_to_virt(struct iommu_domain *domain,
 182                                 dma_addr_t iova_addr)
 183 {
 184         phys_addr_t phys_addr;
 185
 186         phys_addr = domain ? iommu_iova_to_phys(domain, iova_addr) : iova_addr;
 187
 188         return phys_to_virt(phys_addr);
 189 }
 190
 191 static int dpaa2_switch_add_vlan(struct ethsw_port_priv *port_priv, u16 vid)
 192 {
 193         struct ethsw_core *ethsw = port_priv->ethsw_data;
 194         struct dpsw_vlan_cfg vcfg = {0};
 195         int err;
 196
 197         vcfg.fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 198         err = dpsw_vlan_add(ethsw->mc_io, 0,
 199                             ethsw->dpsw_handle, vid, &vcfg);
 200         if (err) {
 201                 dev_err(ethsw->dev, "dpsw_vlan_add err %d\n", err);
 202                 return err;
 203         }
 204         ethsw->vlans[vid] = ETHSW_VLAN_MEMBER;
 205
 206         return 0;
 207 }
 208
 209 static bool dpaa2_switch_port_is_up(struct ethsw_port_priv *port_priv)
 210 {
 211         struct net_device *netdev = port_priv->netdev;
 212         struct dpsw_link_state state;
 213         int err;
 214
 215         err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
 216                                      port_priv->ethsw_data->dpsw_handle,
 217                                      port_priv->idx, &state);
 218         if (err) {
 219                 netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err);
 220                 return true;
 221         }
 222
 223         WARN_ONCE(state.up > 1, "Garbage read into link_state");
 224
 225         return state.up ? true : false;
 226 }
 227
 228 static int dpaa2_switch_port_set_pvid(struct ethsw_port_priv *port_priv, u16 pvid)
 229 {
 230         struct ethsw_core *ethsw = port_priv->ethsw_data;
 231         struct net_device *netdev = port_priv->netdev;
 232         struct dpsw_tci_cfg tci_cfg = { 0 };
 233         bool up;
 234         int err, ret;
 235
 236         err = dpsw_if_get_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
 237                               port_priv->idx, &tci_cfg);
 238         if (err) {
 239                 netdev_err(netdev, "dpsw_if_get_tci err %d\n", err);
 240                 return err;
 241         }
 242
 243         tci_cfg.vlan_id = pvid;
 244
 245         /* Interface needs to be down to change PVID */
 246         up = dpaa2_switch_port_is_up(port_priv);
 247         if (up) {
 248                 err = dpsw_if_disable(ethsw->mc_io, 0,
 249                                       ethsw->dpsw_handle,
 250                                       port_priv->idx);
 251                 if (err) {
 252                         netdev_err(netdev, "dpsw_if_disable err %d\n", err);
 253                         return err;
 254                 }
 255         }
 256
 257         err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle,
 258                               port_priv->idx, &tci_cfg);
 259         if (err) {
 260                 netdev_err(netdev, "dpsw_if_set_tci err %d\n", err);
 261                 goto set_tci_error;
 262         }
 263
 264         /* Delete previous PVID info and mark the new one */
 265         port_priv->vlans[port_priv->pvid] &= ~ETHSW_VLAN_PVID;
 266         port_priv->vlans[pvid] |= ETHSW_VLAN_PVID;
 267         port_priv->pvid = pvid;
 268
 269 set_tci_error:
 270         if (up) {
 271                 ret = dpsw_if_enable(ethsw->mc_io, 0,
 272                                      ethsw->dpsw_handle,
 273                                      port_priv->idx);
 274                 if (ret) {
 275                         netdev_err(netdev, "dpsw_if_enable err %d\n", ret);
 276                         return ret;
 277                 }
 278         }
 279
 280         return err;
 281 }
 282
 283 static int dpaa2_switch_port_add_vlan(struct ethsw_port_priv *port_priv,
 284                                       u16 vid, u16 flags)
 285 {
 286         struct ethsw_core *ethsw = port_priv->ethsw_data;
 287         struct net_device *netdev = port_priv->netdev;
 288         struct dpsw_vlan_if_cfg vcfg = {0};
 289         int err;
 290
 291         if (port_priv->vlans[vid]) {
 292                 netdev_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
 332 static enum dpsw_stp_state br_stp_state_to_dpsw(u8 state)
 333 {
 334         switch (state) {
 335         case BR_STATE_DISABLED:
 336                 return DPSW_STP_STATE_DISABLED;
 337         case BR_STATE_LISTENING:
 338                 return DPSW_STP_STATE_LISTENING;
 339         case BR_STATE_LEARNING:
 340                 return DPSW_STP_STATE_LEARNING;
 341         case BR_STATE_FORWARDING:
 342                 return DPSW_STP_STATE_FORWARDING;
 343         case BR_STATE_BLOCKING:
 344                 return DPSW_STP_STATE_BLOCKING;
 345         default:
 346                 return DPSW_STP_STATE_DISABLED;
 347         }
 348 }
 349
 350 static int dpaa2_switch_port_set_stp_state(struct ethsw_port_priv *port_priv, u8 state)
 351 {
 352         struct dpsw_stp_cfg stp_cfg = {0};
 353         int err;
 354         u16 vid;
 355
 356         if (!netif_running(port_priv->netdev) || state == port_priv->stp_state)
 357                 return 0;       /* Nothing to do */
 358
 359         stp_cfg.state = br_stp_state_to_dpsw(state);
 360         for (vid = 0; vid <= VLAN_VID_MASK; vid++) {
 361                 if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) {
 362                         stp_cfg.vlan_id = vid;
 363                         err = dpsw_if_set_stp(port_priv->ethsw_data->mc_io, 0,
 364                                               port_priv->ethsw_data->dpsw_handle,
 365                                               port_priv->idx, &stp_cfg);
 366                         if (err) {
 367                                 netdev_err(port_priv->netdev,
 368                                            "dpsw_if_set_stp err %d\n", err);
 369                                 return err;
 370                         }
 371                 }
 372         }
 373
 374         port_priv->stp_state = state;
 375
 376         return 0;
 377 }
 378
 379 static int dpaa2_switch_dellink(struct ethsw_core *ethsw, u16 vid)
 380 {
 381         struct ethsw_port_priv *ppriv_local = NULL;
 382         int i, err;
 383
 384         if (!ethsw->vlans[vid])
 385                 return -ENOENT;
 386
 387         err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, vid);
 388         if (err) {
 389                 dev_err(ethsw->dev, "dpsw_vlan_remove err %d\n", err);
 390                 return err;
 391         }
 392         ethsw->vlans[vid] = 0;
 393
 394         for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
 395                 ppriv_local = ethsw->ports[i];
 396                 if (ppriv_local)
 397                         ppriv_local->vlans[vid] = 0;
 398         }
 399
 400         return 0;
 401 }
 402
 403 static int dpaa2_switch_port_fdb_add_uc(struct ethsw_port_priv *port_priv,
 404                                         const unsigned char *addr)
 405 {
 406         struct dpsw_fdb_unicast_cfg entry = {0};
 407         u16 fdb_id;
 408         int err;
 409
 410         entry.if_egress = port_priv->idx;
 411         entry.type = DPSW_FDB_ENTRY_STATIC;
 412         ether_addr_copy(entry.mac_addr, addr);
 413
 414         fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 415         err = dpsw_fdb_add_unicast(port_priv->ethsw_data->mc_io, 0,
 416                                    port_priv->ethsw_data->dpsw_handle,
 417                                    fdb_id, &entry);
 418         if (err)
 419                 netdev_err(port_priv->netdev,
 420                            "dpsw_fdb_add_unicast err %d\n", err);
 421         return err;
 422 }
 423
 424 static int dpaa2_switch_port_fdb_del_uc(struct ethsw_port_priv *port_priv,
 425                                         const unsigned char *addr)
 426 {
 427         struct dpsw_fdb_unicast_cfg entry = {0};
 428         u16 fdb_id;
 429         int err;
 430
 431         entry.if_egress = port_priv->idx;
 432         entry.type = DPSW_FDB_ENTRY_STATIC;
 433         ether_addr_copy(entry.mac_addr, addr);
 434
 435         fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 436         err = dpsw_fdb_remove_unicast(port_priv->ethsw_data->mc_io, 0,
 437                                       port_priv->ethsw_data->dpsw_handle,
 438                                       fdb_id, &entry);
 439         /* Silently discard error for calling multiple times the del command */
 440         if (err && err != -ENXIO)
 441                 netdev_err(port_priv->netdev,
 442                            "dpsw_fdb_remove_unicast err %d\n", err);
 443         return err;
 444 }
 445
 446 static int dpaa2_switch_port_fdb_add_mc(struct ethsw_port_priv *port_priv,
 447                                         const unsigned char *addr)
 448 {
 449         struct dpsw_fdb_multicast_cfg entry = {0};
 450         u16 fdb_id;
 451         int err;
 452
 453         ether_addr_copy(entry.mac_addr, addr);
 454         entry.type = DPSW_FDB_ENTRY_STATIC;
 455         entry.num_ifs = 1;
 456         entry.if_id[0] = port_priv->idx;
 457
 458         fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 459         err = dpsw_fdb_add_multicast(port_priv->ethsw_data->mc_io, 0,
 460                                      port_priv->ethsw_data->dpsw_handle,
 461                                      fdb_id, &entry);
 462         /* Silently discard error for calling multiple times the add command */
 463         if (err && err != -ENXIO)
 464                 netdev_err(port_priv->netdev, "dpsw_fdb_add_multicast err %d\n",
 465                            err);
 466         return err;
 467 }
 468
 469 static int dpaa2_switch_port_fdb_del_mc(struct ethsw_port_priv *port_priv,
 470                                         const unsigned char *addr)
 471 {
 472         struct dpsw_fdb_multicast_cfg entry = {0};
 473         u16 fdb_id;
 474         int err;
 475
 476         ether_addr_copy(entry.mac_addr, addr);
 477         entry.type = DPSW_FDB_ENTRY_STATIC;
 478         entry.num_ifs = 1;
 479         entry.if_id[0] = port_priv->idx;
 480
 481         fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 482         err = dpsw_fdb_remove_multicast(port_priv->ethsw_data->mc_io, 0,
 483                                         port_priv->ethsw_data->dpsw_handle,
 484                                         fdb_id, &entry);
 485         /* Silently discard error for calling multiple times the del command */
 486         if (err && err != -ENAVAIL)
 487                 netdev_err(port_priv->netdev,
 488                            "dpsw_fdb_remove_multicast err %d\n", err);
 489         return err;
 490 }
 491
 492 static void dpaa2_switch_port_get_stats(struct net_device *netdev,
 493                                         struct rtnl_link_stats64 *stats)
 494 {
 495         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 496         u64 tmp;
 497         int err;
 498
 499         err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
 500                                   port_priv->ethsw_data->dpsw_handle,
 501                                   port_priv->idx,
 502                                   DPSW_CNT_ING_FRAME, &stats->rx_packets);
 503         if (err)
 504                 goto error;
 505
 506         err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
 507                                   port_priv->ethsw_data->dpsw_handle,
 508                                   port_priv->idx,
 509                                   DPSW_CNT_EGR_FRAME, &stats->tx_packets);
 510         if (err)
 511                 goto error;
 512
 513         err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
 514                                   port_priv->ethsw_data->dpsw_handle,
 515                                   port_priv->idx,
 516                                   DPSW_CNT_ING_BYTE, &stats->rx_bytes);
 517         if (err)
 518                 goto error;
 519
 520         err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
 521                                   port_priv->ethsw_data->dpsw_handle,
 522                                   port_priv->idx,
 523                                   DPSW_CNT_EGR_BYTE, &stats->tx_bytes);
 524         if (err)
 525                 goto error;
 526
 527         err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
 528                                   port_priv->ethsw_data->dpsw_handle,
 529                                   port_priv->idx,
 530                                   DPSW_CNT_ING_FRAME_DISCARD,
 531                                   &stats->rx_dropped);
 532         if (err)
 533                 goto error;
 534
 535         err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
 536                                   port_priv->ethsw_data->dpsw_handle,
 537                                   port_priv->idx,
 538                                   DPSW_CNT_ING_FLTR_FRAME,
 539                                   &tmp);
 540         if (err)
 541                 goto error;
 542         stats->rx_dropped += tmp;
 543
 544         err = dpsw_if_get_counter(port_priv->ethsw_data->mc_io, 0,
 545                                   port_priv->ethsw_data->dpsw_handle,
 546                                   port_priv->idx,
 547                                   DPSW_CNT_EGR_FRAME_DISCARD,
 548                                   &stats->tx_dropped);
 549         if (err)
 550                 goto error;
 551
 552         return;
 553
 554 error:
 555         netdev_err(netdev, "dpsw_if_get_counter err %d\n", err);
 556 }
 557
 558 static bool dpaa2_switch_port_has_offload_stats(const struct net_device *netdev,
 559                                                 int attr_id)
 560 {
 561         return (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT);
 562 }
 563
 564 static int dpaa2_switch_port_get_offload_stats(int attr_id,
 565                                                const struct net_device *netdev,
 566                                                void *sp)
 567 {
 568         switch (attr_id) {
 569         case IFLA_OFFLOAD_XSTATS_CPU_HIT:
 570                 dpaa2_switch_port_get_stats((struct net_device *)netdev, sp);
 571                 return 0;
 572         }
 573
 574         return -EINVAL;
 575 }
 576
 577 static int dpaa2_switch_port_change_mtu(struct net_device *netdev, int mtu)
 578 {
 579         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 580         int err;
 581
 582         err = dpsw_if_set_max_frame_length(port_priv->ethsw_data->mc_io,
 583                                            0,
 584                                            port_priv->ethsw_data->dpsw_handle,
 585                                            port_priv->idx,
 586                                            (u16)ETHSW_L2_MAX_FRM(mtu));
 587         if (err) {
 588                 netdev_err(netdev,
 589                            "dpsw_if_set_max_frame_length() err %d\n", err);
 590                 return err;
 591         }
 592
 593         netdev->mtu = mtu;
 594         return 0;
 595 }
 596
 597 static int dpaa2_switch_port_link_state_update(struct net_device *netdev)
 598 {
 599         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 600         struct dpsw_link_state state;
 601         int err;
 602
 603         /* When we manage the MAC/PHY using phylink there is no need
 604          * to manually update the netif_carrier.
 605          * We can avoid locking because we are called from the "link changed"
 606          * IRQ handler, which is the same as the "endpoint changed" IRQ handler
 607          * (the writer to port_priv->mac), so we cannot race with it.
 608          */
 609         if (dpaa2_mac_is_type_phy(port_priv->mac))
 610                 return 0;
 611
 612         /* Interrupts are received even though no one issued an 'ifconfig up'
 613          * on the switch interface. Ignore these link state update interrupts
 614          */
 615         if (!netif_running(netdev))
 616                 return 0;
 617
 618         err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
 619                                      port_priv->ethsw_data->dpsw_handle,
 620                                      port_priv->idx, &state);
 621         if (err) {
 622                 netdev_err(netdev, "dpsw_if_get_link_state() err %d\n", err);
 623                 return err;
 624         }
 625
 626         WARN_ONCE(state.up > 1, "Garbage read into link_state");
 627
 628         if (state.up != port_priv->link_state) {
 629                 if (state.up) {
 630                         netif_carrier_on(netdev);
 631                         netif_tx_start_all_queues(netdev);
 632                 } else {
 633                         netif_carrier_off(netdev);
 634                         netif_tx_stop_all_queues(netdev);
 635                 }
 636                 port_priv->link_state = state.up;
 637         }
 638
 639         return 0;
 640 }
 641
 642 /* Manage all NAPI instances for the control interface.
 643  *
 644  * We only have one RX queue and one Tx Conf queue for all
 645  * switch ports. Therefore, we only need to enable the NAPI instance once, the
 646  * first time one of the switch ports runs .dev_open().
 647  */
 648
 649 static void dpaa2_switch_enable_ctrl_if_napi(struct ethsw_core *ethsw)
 650 {
 651         int i;
 652
 653         /* Access to the ethsw->napi_users relies on the RTNL lock */
 654         ASSERT_RTNL();
 655
 656         /* a new interface is using the NAPI instance */
 657         ethsw->napi_users++;
 658
 659         /* if there is already a user of the instance, return */
 660         if (ethsw->napi_users > 1)
 661                 return;
 662
 663         for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
 664                 napi_enable(&ethsw->fq[i].napi);
 665 }
 666
 667 static void dpaa2_switch_disable_ctrl_if_napi(struct ethsw_core *ethsw)
 668 {
 669         int i;
 670
 671         /* Access to the ethsw->napi_users relies on the RTNL lock */
 672         ASSERT_RTNL();
 673
 674         /* If we are not the last interface using the NAPI, return */
 675         ethsw->napi_users--;
 676         if (ethsw->napi_users)
 677                 return;
 678
 679         for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
 680                 napi_disable(&ethsw->fq[i].napi);
 681 }
 682
 683 static int dpaa2_switch_port_open(struct net_device *netdev)
 684 {
 685         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 686         struct ethsw_core *ethsw = port_priv->ethsw_data;
 687         int err;
 688
 689         mutex_lock(&port_priv->mac_lock);
 690
 691         if (!dpaa2_switch_port_is_type_phy(port_priv)) {
 692                 /* Explicitly set carrier off, otherwise
 693                  * netif_carrier_ok() will return true and cause 'ip link show'
 694                  * to report the LOWER_UP flag, even though the link
 695                  * notification wasn't even received.
 696                  */
 697                 netif_carrier_off(netdev);
 698         }
 699
 700         err = dpsw_if_enable(port_priv->ethsw_data->mc_io, 0,
 701                              port_priv->ethsw_data->dpsw_handle,
 702                              port_priv->idx);
 703         if (err) {
 704                 mutex_unlock(&port_priv->mac_lock);
 705                 netdev_err(netdev, "dpsw_if_enable err %d\n", err);
 706                 return err;
 707         }
 708
 709         dpaa2_switch_enable_ctrl_if_napi(ethsw);
 710
 711         if (dpaa2_switch_port_is_type_phy(port_priv))
 712                 dpaa2_mac_start(port_priv->mac);
 713
 714         mutex_unlock(&port_priv->mac_lock);
 715
 716         return 0;
 717 }
 718
 719 static int dpaa2_switch_port_stop(struct net_device *netdev)
 720 {
 721         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 722         struct ethsw_core *ethsw = port_priv->ethsw_data;
 723         int err;
 724
 725         mutex_lock(&port_priv->mac_lock);
 726
 727         if (dpaa2_switch_port_is_type_phy(port_priv)) {
 728                 dpaa2_mac_stop(port_priv->mac);
 729         } else {
 730                 netif_tx_stop_all_queues(netdev);
 731                 netif_carrier_off(netdev);
 732         }
 733
 734         mutex_unlock(&port_priv->mac_lock);
 735
 736         err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
 737                               port_priv->ethsw_data->dpsw_handle,
 738                               port_priv->idx);
 739         if (err) {
 740                 netdev_err(netdev, "dpsw_if_disable err %d\n", err);
 741                 return err;
 742         }
 743
 744         dpaa2_switch_disable_ctrl_if_napi(ethsw);
 745
 746         return 0;
 747 }
 748
 749 static int dpaa2_switch_port_parent_id(struct net_device *dev,
 750                                        struct netdev_phys_item_id *ppid)
 751 {
 752         struct ethsw_port_priv *port_priv = netdev_priv(dev);
 753
 754         ppid->id_len = 1;
 755         ppid->id[0] = port_priv->ethsw_data->dev_id;
 756
 757         return 0;
 758 }
 759
 760 static int dpaa2_switch_port_get_phys_name(struct net_device *netdev, char *name,
 761                                            size_t len)
 762 {
 763         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
 764         int err;
 765
 766         err = snprintf(name, len, "p%d", port_priv->idx);
 767         if (err >= len)
 768                 return -EINVAL;
 769
 770         return 0;
 771 }
 772
 773 struct ethsw_dump_ctx {
 774         struct net_device *dev;
 775         struct sk_buff *skb;
 776         struct netlink_callback *cb;
 777         int idx;
 778 };
 779
 780 static int dpaa2_switch_fdb_dump_nl(struct fdb_dump_entry *entry,
 781                                     struct ethsw_dump_ctx *dump)
 782 {
 783         int is_dynamic = entry->type & DPSW_FDB_ENTRY_DINAMIC;
 784         u32 portid = NETLINK_CB(dump->cb->skb).portid;
 785         u32 seq = dump->cb->nlh->nlmsg_seq;
 786         struct nlmsghdr *nlh;
 787         struct ndmsg *ndm;
 788
 789         if (dump->idx < dump->cb->args[2])
 790                 goto skip;
 791
 792         nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
 793                         sizeof(*ndm), NLM_F_MULTI);
 794         if (!nlh)
 795                 return -EMSGSIZE;
 796
 797         ndm = nlmsg_data(nlh);
 798         ndm->ndm_family  = AF_BRIDGE;
 799         ndm->ndm_pad1    = 0;
 800         ndm->ndm_pad2    = 0;
 801         ndm->ndm_flags   = NTF_SELF;
 802         ndm->ndm_type    = 0;
 803         ndm->ndm_ifindex = dump->dev->ifindex;
 804         ndm->ndm_state   = is_dynamic ? NUD_REACHABLE : NUD_NOARP;
 805
 806         if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, entry->mac_addr))
 807                 goto nla_put_failure;
 808
 809         nlmsg_end(dump->skb, nlh);
 810
 811 skip:
 812         dump->idx++;
 813         return 0;
 814
 815 nla_put_failure:
 816         nlmsg_cancel(dump->skb, nlh);
 817         return -EMSGSIZE;
 818 }
 819
 820 static int dpaa2_switch_port_fdb_valid_entry(struct fdb_dump_entry *entry,
 821                                              struct ethsw_port_priv *port_priv)
 822 {
 823         int idx = port_priv->idx;
 824         int valid;
 825
 826         if (entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
 827                 valid = entry->if_info == port_priv->idx;
 828         else
 829                 valid = entry->if_mask[idx / 8] & BIT(idx % 8);
 830
 831         return valid;
 832 }
 833
 834 static int dpaa2_switch_fdb_iterate(struct ethsw_port_priv *port_priv,
 835                                     dpaa2_switch_fdb_cb_t cb, void *data)
 836 {
 837         struct net_device *net_dev = port_priv->netdev;
 838         struct ethsw_core *ethsw = port_priv->ethsw_data;
 839         struct device *dev = net_dev->dev.parent;
 840         struct fdb_dump_entry *fdb_entries;
 841         struct fdb_dump_entry fdb_entry;
 842         dma_addr_t fdb_dump_iova;
 843         u16 num_fdb_entries;
 844         u32 fdb_dump_size;
 845         int err = 0, i;
 846         u8 *dma_mem;
 847         u16 fdb_id;
 848
 849         fdb_dump_size = ethsw->sw_attr.max_fdb_entries * sizeof(fdb_entry);
 850         dma_mem = kzalloc(fdb_dump_size, GFP_KERNEL);
 851         if (!dma_mem)
 852                 return -ENOMEM;
 853
 854         fdb_dump_iova = dma_map_single(dev, dma_mem, fdb_dump_size,
 855                                        DMA_FROM_DEVICE);
 856         if (dma_mapping_error(dev, fdb_dump_iova)) {
 857                 netdev_err(net_dev, "dma_map_single() failed\n");
 858                 err = -ENOMEM;
 859                 goto err_map;
 860         }
 861
 862         fdb_id = dpaa2_switch_port_get_fdb_id(port_priv);
 863         err = dpsw_fdb_dump(ethsw->mc_io, 0, ethsw->dpsw_handle, fdb_id,
 864                             fdb_dump_iova, fdb_dump_size, &num_fdb_entries);
 865         if (err) {
 866                 netdev_err(net_dev, "dpsw_fdb_dump() = %d\n", err);
 867                 goto err_dump;
 868         }
 869
 870         dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_FROM_DEVICE);
 871
 872         fdb_entries = (struct fdb_dump_entry *)dma_mem;
 873         for (i = 0; i < num_fdb_entries; i++) {
 874                 fdb_entry = fdb_entries[i];
 875
 876                 err = cb(port_priv, &fdb_entry, data);
 877                 if (err)
 878                         goto end;
 879         }
 880
 881 end:
 882         kfree(dma_mem);
 883
 884         return 0;
 885
 886 err_dump:
 887         dma_unmap_single(dev, fdb_dump_iova, fdb_dump_size, DMA_TO_DEVICE);
 888 err_map:
 889         kfree(dma_mem);
 890         return err;
 891 }
 892
 893 static int dpaa2_switch_fdb_entry_dump(struct ethsw_port_priv *port_priv,
 894                                        struct fdb_dump_entry *fdb_entry,
 895                                        void *data)
 896 {
 897         if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv))
 898                 return 0;
 899
 900         return dpaa2_switch_fdb_dump_nl(fdb_entry, data);
 901 }
 902
 903 static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 904                                       struct net_device *net_dev,
 905                                       struct net_device *filter_dev, int *idx)
 906 {
 907         struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
 908         struct ethsw_dump_ctx dump = {
 909                 .dev = net_dev,
 910                 .skb = skb,
 911                 .cb = cb,
 912                 .idx = *idx,
 913         };
 914         int err;
 915
 916         err = dpaa2_switch_fdb_iterate(port_priv, dpaa2_switch_fdb_entry_dump, &dump);
 917         *idx = dump.idx;
 918
 919         return err;
 920 }
 921
 922 static int dpaa2_switch_fdb_entry_fast_age(struct ethsw_port_priv *port_priv,
 923                                            struct fdb_dump_entry *fdb_entry,
 924                                            void *data __always_unused)
 925 {
 926         if (!dpaa2_switch_port_fdb_valid_entry(fdb_entry, port_priv))
 927                 return 0;
 928
 929         if (!(fdb_entry->type & DPSW_FDB_ENTRY_TYPE_DYNAMIC))
 930                 return 0;
 931
 932         if (fdb_entry->type & DPSW_FDB_ENTRY_TYPE_UNICAST)
 933                 dpaa2_switch_port_fdb_del_uc(port_priv, fdb_entry->mac_addr);
 934         else
 935                 dpaa2_switch_port_fdb_del_mc(port_priv, fdb_entry->mac_addr);
 936
 937         return 0;
 938 }
 939
 940 static void dpaa2_switch_port_fast_age(struct ethsw_port_priv *port_priv)
 941 {
 942         dpaa2_switch_fdb_iterate(port_priv,
 943                                  dpaa2_switch_fdb_entry_fast_age, NULL);
 944 }
 945
 946 static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto,
 947                                       u16 vid)
 948 {
 949         struct switchdev_obj_port_vlan vlan = {
 950                 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
 951                 .vid = vid,
 952                 .obj.orig_dev = netdev,
 953                 /* This API only allows programming tagged, non-PVID VIDs */
 954                 .flags = 0,
 955         };
 956
 957         return dpaa2_switch_port_vlans_add(netdev, &vlan);
 958 }
 959
 960 static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto,
 961                                        u16 vid)
 962 {
 963         struct switchdev_obj_port_vlan vlan = {
 964                 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
 965                 .vid = vid,
 966                 .obj.orig_dev = netdev,
 967                 /* This API only allows programming tagged, non-PVID VIDs */
 968                 .flags = 0,
 969         };
 970
 971         return dpaa2_switch_port_vlans_del(netdev, &vlan);
 972 }
 973
 974 static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv)
 975 {
 976         struct ethsw_core *ethsw = port_priv->ethsw_data;
 977         struct net_device *net_dev = port_priv->netdev;
 978         struct device *dev = net_dev->dev.parent;
 979         u8 mac_addr[ETH_ALEN];
 980         int err;
 981
 982         if (!(ethsw->features & ETHSW_FEATURE_MAC_ADDR))
 983                 return 0;
 984
 985         /* Get firmware address, if any */
 986         err = dpsw_if_get_port_mac_addr(ethsw->mc_io, 0, ethsw->dpsw_handle,
 987                                         port_priv->idx, mac_addr);
 988         if (err) {
 989                 dev_err(dev, "dpsw_if_get_port_mac_addr() failed\n");
 990                 return err;
 991         }
 992
 993         /* First check if firmware has any address configured by bootloader */
 994         if (!is_zero_ether_addr(mac_addr)) {
 995                 eth_hw_addr_set(net_dev, mac_addr);
 996         } else {
 997                 /* No MAC address configured, fill in net_dev->dev_addr
 998                  * with a random one
 999                  */
1000                 eth_hw_addr_random(net_dev);
1001                 dev_dbg_once(dev, "device(s) have all-zero hwaddr, replaced with random\n");
1002
1003                 /* Override NET_ADDR_RANDOM set by eth_hw_addr_random(); for all
1004                  * practical purposes, this will be our "permanent" mac address,
1005                  * at least until the next reboot. This move will also permit
1006                  * register_netdevice() to properly fill up net_dev->perm_addr.
1007                  */
1008                 net_dev->addr_assign_type = NET_ADDR_PERM;
1009         }
1010
1011         return 0;
1012 }
1013
1014 static void dpaa2_switch_free_fd(const struct ethsw_core *ethsw,
1015                                  const struct dpaa2_fd *fd)
1016 {
1017         struct device *dev = ethsw->dev;
1018         unsigned char *buffer_start;
1019         struct sk_buff **skbh, *skb;
1020         dma_addr_t fd_addr;
1021
1022         fd_addr = dpaa2_fd_get_addr(fd);
1023         skbh = dpaa2_iova_to_virt(ethsw->iommu_domain, fd_addr);
1024
1025         skb = *skbh;
1026         buffer_start = (unsigned char *)skbh;
1027
1028         dma_unmap_single(dev, fd_addr,
1029                          skb_tail_pointer(skb) - buffer_start,
1030                          DMA_TO_DEVICE);
1031
1032         /* Move on with skb release */
1033         dev_kfree_skb(skb);
1034 }
1035
1036 static int dpaa2_switch_build_single_fd(struct ethsw_core *ethsw,
1037                                         struct sk_buff *skb,
1038                                         struct dpaa2_fd *fd)
1039 {
1040         struct device *dev = ethsw->dev;
1041         struct sk_buff **skbh;
1042         dma_addr_t addr;
1043         u8 *buff_start;
1044         void *hwa;
1045
1046         buff_start = PTR_ALIGN(skb->data - DPAA2_SWITCH_TX_DATA_OFFSET -
1047                                DPAA2_SWITCH_TX_BUF_ALIGN,
1048                                DPAA2_SWITCH_TX_BUF_ALIGN);
1049
1050         /* Clear FAS to have consistent values for TX confirmation. It is
1051          * located in the first 8 bytes of the buffer's hardware annotation
1052          * area
1053          */
1054         hwa = buff_start + DPAA2_SWITCH_SWA_SIZE;
1055         memset(hwa, 0, 8);
1056
1057         /* Store a backpointer to the skb at the beginning of the buffer
1058          * (in the private data area) such that we can release it
1059          * on Tx confirm
1060          */
1061         skbh = (struct sk_buff **)buff_start;
1062         *skbh = skb;
1063
1064         addr = dma_map_single(dev, buff_start,
1065                               skb_tail_pointer(skb) - buff_start,
1066                               DMA_TO_DEVICE);
1067         if (unlikely(dma_mapping_error(dev, addr)))
1068                 return -ENOMEM;
1069
1070         /* Setup the FD fields */
1071         memset(fd, 0, sizeof(*fd));
1072
1073         dpaa2_fd_set_addr(fd, addr);
1074         dpaa2_fd_set_offset(fd, (u16)(skb->data - buff_start));
1075         dpaa2_fd_set_len(fd, skb->len);
1076         dpaa2_fd_set_format(fd, dpaa2_fd_single);
1077
1078         return 0;
1079 }
1080
1081 static netdev_tx_t dpaa2_switch_port_tx(struct sk_buff *skb,
1082                                         struct net_device *net_dev)
1083 {
1084         struct ethsw_port_priv *port_priv = netdev_priv(net_dev);
1085         struct ethsw_core *ethsw = port_priv->ethsw_data;
1086         int retries = DPAA2_SWITCH_SWP_BUSY_RETRIES;
1087         struct dpaa2_fd fd;
1088         int err;
1089
1090         if (unlikely(skb_headroom(skb) < DPAA2_SWITCH_NEEDED_HEADROOM)) {
1091                 struct sk_buff *ns;
1092
1093                 ns = skb_realloc_headroom(skb, DPAA2_SWITCH_NEEDED_HEADROOM);
1094                 if (unlikely(!ns)) {
1095                         net_err_ratelimited("%s: Error reallocating skb headroom\n", net_dev->name);
1096                         goto err_free_skb;
1097                 }
1098                 dev_consume_skb_any(skb);
1099                 skb = ns;
1100         }
1101
1102         /* We'll be holding a back-reference to the skb until Tx confirmation */
1103         skb = skb_unshare(skb, GFP_ATOMIC);
1104         if (unlikely(!skb)) {
1105                 /* skb_unshare() has already freed the skb */
1106                 net_err_ratelimited("%s: Error copying the socket buffer\n", net_dev->name);
1107                 goto err_exit;
1108         }
1109
1110         /* At this stage, we do not support non-linear skbs so just try to
1111          * linearize the skb and if that's not working, just drop the packet.
1112          */
1113         err = skb_linearize(skb);
1114         if (err) {
1115                 net_err_ratelimited("%s: skb_linearize error (%d)!\n", net_dev->name, err);
1116                 goto err_free_skb;
1117         }
1118
1119         err = dpaa2_switch_build_single_fd(ethsw, skb, &fd);
1120         if (unlikely(err)) {
1121                 net_err_ratelimited("%s: ethsw_build_*_fd() %d\n", net_dev->name, err);
1122                 goto err_free_skb;
1123         }
1124
1125         do {
1126                 err = dpaa2_io_service_enqueue_qd(NULL,
1127                                                   port_priv->tx_qdid,
1128                                                   8, 0, &fd);
1129                 retries--;
1130         } while (err == -EBUSY && retries);
1131
1132         if (unlikely(err < 0)) {
1133                 dpaa2_switch_free_fd(ethsw, &fd);
1134                 goto err_exit;
1135         }
1136
1137         return NETDEV_TX_OK;
1138
1139 err_free_skb:
1140         dev_kfree_skb(skb);
1141 err_exit:
1142         return NETDEV_TX_OK;
1143 }
1144
1145 static int
1146 dpaa2_switch_setup_tc_cls_flower(struct dpaa2_switch_filter_block *filter_block,
1147                                  struct flow_cls_offload *f)
1148 {
1149         switch (f->command) {
1150         case FLOW_CLS_REPLACE:
1151                 return dpaa2_switch_cls_flower_replace(filter_block, f);
1152         case FLOW_CLS_DESTROY:
1153                 return dpaa2_switch_cls_flower_destroy(filter_block, f);
1154         default:
1155                 return -EOPNOTSUPP;
1156         }
1157 }
1158
1159 static int
1160 dpaa2_switch_setup_tc_cls_matchall(struct dpaa2_switch_filter_block *block,
1161                                    struct tc_cls_matchall_offload *f)
1162 {
1163         switch (f->command) {
1164         case TC_CLSMATCHALL_REPLACE:
1165                 return dpaa2_switch_cls_matchall_replace(block, f);
1166         case TC_CLSMATCHALL_DESTROY:
1167                 return dpaa2_switch_cls_matchall_destroy(block, f);
1168         default:
1169                 return -EOPNOTSUPP;
1170         }
1171 }
1172
1173 static int dpaa2_switch_port_setup_tc_block_cb_ig(enum tc_setup_type type,
1174                                                   void *type_data,
1175                                                   void *cb_priv)
1176 {
1177         switch (type) {
1178         case TC_SETUP_CLSFLOWER:
1179                 return dpaa2_switch_setup_tc_cls_flower(cb_priv, type_data);
1180         case TC_SETUP_CLSMATCHALL:
1181                 return dpaa2_switch_setup_tc_cls_matchall(cb_priv, type_data);
1182         default:
1183                 return -EOPNOTSUPP;
1184         }
1185 }
1186
1187 static LIST_HEAD(dpaa2_switch_block_cb_list);
1188
1189 static int
1190 dpaa2_switch_port_acl_tbl_bind(struct ethsw_port_priv *port_priv,
1191                                struct dpaa2_switch_filter_block *block)
1192 {
1193         struct ethsw_core *ethsw = port_priv->ethsw_data;
1194         struct net_device *netdev = port_priv->netdev;
1195         struct dpsw_acl_if_cfg acl_if_cfg;
1196         int err;
1197
1198         if (port_priv->filter_block)
1199                 return -EINVAL;
1200
1201         acl_if_cfg.if_id[0] = port_priv->idx;
1202         acl_if_cfg.num_ifs = 1;
1203         err = dpsw_acl_add_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
1204                               block->acl_id, &acl_if_cfg);
1205         if (err) {
1206                 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err);
1207                 return err;
1208         }
1209
1210         block->ports |= BIT(port_priv->idx);
1211         port_priv->filter_block = block;
1212
1213         return 0;
1214 }
1215
1216 static int
1217 dpaa2_switch_port_acl_tbl_unbind(struct ethsw_port_priv *port_priv,
1218                                  struct dpaa2_switch_filter_block *block)
1219 {
1220         struct ethsw_core *ethsw = port_priv->ethsw_data;
1221         struct net_device *netdev = port_priv->netdev;
1222         struct dpsw_acl_if_cfg acl_if_cfg;
1223         int err;
1224
1225         if (port_priv->filter_block != block)
1226                 return -EINVAL;
1227
1228         acl_if_cfg.if_id[0] = port_priv->idx;
1229         acl_if_cfg.num_ifs = 1;
1230         err = dpsw_acl_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
1231                                  block->acl_id, &acl_if_cfg);
1232         if (err) {
1233                 netdev_err(netdev, "dpsw_acl_add_if err %d\n", err);
1234                 return err;
1235         }
1236
1237         block->ports &= ~BIT(port_priv->idx);
1238         port_priv->filter_block = NULL;
1239         return 0;
1240 }
1241
1242 static int dpaa2_switch_port_block_bind(struct ethsw_port_priv *port_priv,
1243                                         struct dpaa2_switch_filter_block *block)
1244 {
1245         struct dpaa2_switch_filter_block *old_block = port_priv->filter_block;
1246         int err;
1247
1248         /* Offload all the mirror entries found in the block on this new port
1249          * joining it.
1250          */
1251         err = dpaa2_switch_block_offload_mirror(block, port_priv);
1252         if (err)
1253                 return err;
1254
1255         /* If the port is already bound to this ACL table then do nothing. This
1256          * can happen when this port is the first one to join a tc block
1257          */
1258         if (port_priv->filter_block == block)
1259                 return 0;
1260
1261         err = dpaa2_switch_port_acl_tbl_unbind(port_priv, old_block);
1262         if (err)
1263                 return err;
1264
1265         /* Mark the previous ACL table as being unused if this was the last
1266          * port that was using it.
1267          */
1268         if (old_block->ports == 0)
1269                 old_block->in_use = false;
1270
1271         return dpaa2_switch_port_acl_tbl_bind(port_priv, block);
1272 }
1273
1274 static int
1275 dpaa2_switch_port_block_unbind(struct ethsw_port_priv *port_priv,
1276                                struct dpaa2_switch_filter_block *block)
1277 {
1278         struct ethsw_core *ethsw = port_priv->ethsw_data;
1279         struct dpaa2_switch_filter_block *new_block;
1280         int err;
1281
1282         /* Unoffload all the mirror entries found in the block from the
1283          * port leaving it.
1284          */
1285         err = dpaa2_switch_block_unoffload_mirror(block, port_priv);
1286         if (err)
1287                 return err;
1288
1289         /* We are the last port that leaves a block (an ACL table).
1290          * We'll continue to use this table.
1291          */
1292         if (block->ports == BIT(port_priv->idx))
1293                 return 0;
1294
1295         err = dpaa2_switch_port_acl_tbl_unbind(port_priv, block);
1296         if (err)
1297                 return err;
1298
1299         if (block->ports == 0)
1300                 block->in_use = false;
1301
1302         new_block = dpaa2_switch_filter_block_get_unused(ethsw);
1303         new_block->in_use = true;
1304         return dpaa2_switch_port_acl_tbl_bind(port_priv, new_block);
1305 }
1306
1307 static int dpaa2_switch_setup_tc_block_bind(struct net_device *netdev,
1308                                             struct flow_block_offload *f)
1309 {
1310         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1311         struct ethsw_core *ethsw = port_priv->ethsw_data;
1312         struct dpaa2_switch_filter_block *filter_block;
1313         struct flow_block_cb *block_cb;
1314         bool register_block = false;
1315         int err;
1316
1317         block_cb = flow_block_cb_lookup(f->block,
1318                                         dpaa2_switch_port_setup_tc_block_cb_ig,
1319                                         ethsw);
1320
1321         if (!block_cb) {
1322                 /* If the filter block is not already known, then this port
1323                  * must be the first to join it. In this case, we can just
1324                  * continue to use our private table
1325                  */
1326                 filter_block = port_priv->filter_block;
1327
1328                 block_cb = flow_block_cb_alloc(dpaa2_switch_port_setup_tc_block_cb_ig,
1329                                                ethsw, filter_block, NULL);
1330                 if (IS_ERR(block_cb))
1331                         return PTR_ERR(block_cb);
1332
1333                 register_block = true;
1334         } else {
1335                 filter_block = flow_block_cb_priv(block_cb);
1336         }
1337
1338         flow_block_cb_incref(block_cb);
1339         err = dpaa2_switch_port_block_bind(port_priv, filter_block);
1340         if (err)
1341                 goto err_block_bind;
1342
1343         if (register_block) {
1344                 flow_block_cb_add(block_cb, f);
1345                 list_add_tail(&block_cb->driver_list,
1346                               &dpaa2_switch_block_cb_list);
1347         }
1348
1349         return 0;
1350
1351 err_block_bind:
1352         if (!flow_block_cb_decref(block_cb))
1353                 flow_block_cb_free(block_cb);
1354         return err;
1355 }
1356
1357 static void dpaa2_switch_setup_tc_block_unbind(struct net_device *netdev,
1358                                                struct flow_block_offload *f)
1359 {
1360         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1361         struct ethsw_core *ethsw = port_priv->ethsw_data;
1362         struct dpaa2_switch_filter_block *filter_block;
1363         struct flow_block_cb *block_cb;
1364         int err;
1365
1366         block_cb = flow_block_cb_lookup(f->block,
1367                                         dpaa2_switch_port_setup_tc_block_cb_ig,
1368                                         ethsw);
1369         if (!block_cb)
1370                 return;
1371
1372         filter_block = flow_block_cb_priv(block_cb);
1373         err = dpaa2_switch_port_block_unbind(port_priv, filter_block);
1374         if (!err && !flow_block_cb_decref(block_cb)) {
1375                 flow_block_cb_remove(block_cb, f);
1376                 list_del(&block_cb->driver_list);
1377         }
1378 }
1379
1380 static int dpaa2_switch_setup_tc_block(struct net_device *netdev,
1381                                        struct flow_block_offload *f)
1382 {
1383         if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
1384                 return -EOPNOTSUPP;
1385
1386         f->driver_block_list = &dpaa2_switch_block_cb_list;
1387
1388         switch (f->command) {
1389         case FLOW_BLOCK_BIND:
1390                 return dpaa2_switch_setup_tc_block_bind(netdev, f);
1391         case FLOW_BLOCK_UNBIND:
1392                 dpaa2_switch_setup_tc_block_unbind(netdev, f);
1393                 return 0;
1394         default:
1395                 return -EOPNOTSUPP;
1396         }
1397 }
1398
1399 static int dpaa2_switch_port_setup_tc(struct net_device *netdev,
1400                                       enum tc_setup_type type,
1401                                       void *type_data)
1402 {
1403         switch (type) {
1404         case TC_SETUP_BLOCK: {
1405                 return dpaa2_switch_setup_tc_block(netdev, type_data);
1406         }
1407         default:
1408                 return -EOPNOTSUPP;
1409         }
1410
1411         return 0;
1412 }
1413
1414 static const struct net_device_ops dpaa2_switch_port_ops = {
1415         .ndo_open               = dpaa2_switch_port_open,
1416         .ndo_stop               = dpaa2_switch_port_stop,
1417
1418         .ndo_set_mac_address    = eth_mac_addr,
1419         .ndo_get_stats64        = dpaa2_switch_port_get_stats,
1420         .ndo_change_mtu         = dpaa2_switch_port_change_mtu,
1421         .ndo_has_offload_stats  = dpaa2_switch_port_has_offload_stats,
1422         .ndo_get_offload_stats  = dpaa2_switch_port_get_offload_stats,
1423         .ndo_fdb_dump           = dpaa2_switch_port_fdb_dump,
1424         .ndo_vlan_rx_add_vid    = dpaa2_switch_port_vlan_add,
1425         .ndo_vlan_rx_kill_vid   = dpaa2_switch_port_vlan_kill,
1426
1427         .ndo_start_xmit         = dpaa2_switch_port_tx,
1428         .ndo_get_port_parent_id = dpaa2_switch_port_parent_id,
1429         .ndo_get_phys_port_name = dpaa2_switch_port_get_phys_name,
1430         .ndo_setup_tc           = dpaa2_switch_port_setup_tc,
1431 };
1432
1433 bool dpaa2_switch_port_dev_check(const struct net_device *netdev)
1434 {
1435         return netdev->netdev_ops == &dpaa2_switch_port_ops;
1436 }
1437
1438 static int dpaa2_switch_port_connect_mac(struct ethsw_port_priv *port_priv)
1439 {
1440         struct fsl_mc_device *dpsw_port_dev, *dpmac_dev;
1441         struct dpaa2_mac *mac;
1442         int err;
1443
1444         dpsw_port_dev = to_fsl_mc_device(port_priv->netdev->dev.parent);
1445         dpmac_dev = fsl_mc_get_endpoint(dpsw_port_dev, port_priv->idx);
1446
1447         if (PTR_ERR(dpmac_dev) == -EPROBE_DEFER)
1448                 return PTR_ERR(dpmac_dev);
1449
1450         if (IS_ERR(dpmac_dev) || dpmac_dev->dev.type != &fsl_mc_bus_dpmac_type)
1451                 return 0;
1452
1453         mac = kzalloc(sizeof(*mac), GFP_KERNEL);
1454         if (!mac)
1455                 return -ENOMEM;
1456
1457         mac->mc_dev = dpmac_dev;
1458         mac->mc_io = port_priv->ethsw_data->mc_io;
1459         mac->net_dev = port_priv->netdev;
1460
1461         err = dpaa2_mac_open(mac);
1462         if (err)
1463                 goto err_free_mac;
1464
1465         if (dpaa2_mac_is_type_phy(mac)) {
1466                 err = dpaa2_mac_connect(mac);
1467                 if (err) {
1468                         netdev_err(port_priv->netdev,
1469                                    "Error connecting to the MAC endpoint %pe\n",
1470                                    ERR_PTR(err));
1471                         goto err_close_mac;
1472                 }
1473         }
1474
1475         mutex_lock(&port_priv->mac_lock);
1476         port_priv->mac = mac;
1477         mutex_unlock(&port_priv->mac_lock);
1478
1479         return 0;
1480
1481 err_close_mac:
1482         dpaa2_mac_close(mac);
1483 err_free_mac:
1484         kfree(mac);
1485         return err;
1486 }
1487
1488 static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
1489 {
1490         struct dpaa2_mac *mac;
1491
1492         mutex_lock(&port_priv->mac_lock);
1493         mac = port_priv->mac;
1494         port_priv->mac = NULL;
1495         mutex_unlock(&port_priv->mac_lock);
1496
1497         if (!mac)
1498                 return;
1499
1500         if (dpaa2_mac_is_type_phy(mac))
1501                 dpaa2_mac_disconnect(mac);
1502
1503         dpaa2_mac_close(mac);
1504         kfree(mac);
1505 }
1506
1507 static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg)
1508 {
1509         struct device *dev = (struct device *)arg;
1510         struct ethsw_core *ethsw = dev_get_drvdata(dev);
1511         struct ethsw_port_priv *port_priv;
1512         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
1543 out:
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
1552 static 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
1605 free_devm_irq:
1606         devm_free_irq(dev, irq->virq, dev);
1607 free_irq:
1608         fsl_mc_free_irqs(sw_dev);
1609         return err;
1610 }
1611
1612 static void dpaa2_switch_teardown_irqs(struct fsl_mc_device *sw_dev)
1613 {
1614         struct device *dev = &sw_dev->dev;
1615         struct ethsw_core *ethsw = dev_get_drvdata(dev);
1616         int err;
1617
1618         err = dpsw_set_irq_enable(ethsw->mc_io, 0, ethsw->dpsw_handle,
1619                                   DPSW_IRQ_INDEX_IF, 0);
1620         if (err)
1621                 dev_err(dev, "dpsw_set_irq_enable err %d\n", err);
1622
1623         fsl_mc_free_irqs(sw_dev);
1624 }
1625
1626 static int dpaa2_switch_port_set_learning(struct ethsw_port_priv *port_priv, bool enable)
1627 {
1628         struct ethsw_core *ethsw = port_priv->ethsw_data;
1629         enum dpsw_learning_mode learn_mode;
1630         int err;
1631
1632         if (enable)
1633                 learn_mode = DPSW_LEARNING_MODE_HW;
1634         else
1635                 learn_mode = DPSW_LEARNING_MODE_DIS;
1636
1637         err = dpsw_if_set_learning_mode(ethsw->mc_io, 0, ethsw->dpsw_handle,
1638                                         port_priv->idx, learn_mode);
1639         if (err)
1640                 netdev_err(port_priv->netdev, "dpsw_if_set_learning_mode err %d\n", err);
1641
1642         if (!enable)
1643                 dpaa2_switch_port_fast_age(port_priv);
1644
1645         return err;
1646 }
1647
1648 static int dpaa2_switch_port_attr_stp_state_set(struct net_device *netdev,
1649                                                 u8 state)
1650 {
1651         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1652         int err;
1653
1654         err = dpaa2_switch_port_set_stp_state(port_priv, state);
1655         if (err)
1656                 return err;
1657
1658         switch (state) {
1659         case BR_STATE_DISABLED:
1660         case BR_STATE_BLOCKING:
1661         case BR_STATE_LISTENING:
1662                 err = dpaa2_switch_port_set_learning(port_priv, false);
1663                 break;
1664         case BR_STATE_LEARNING:
1665         case BR_STATE_FORWARDING:
1666                 err = dpaa2_switch_port_set_learning(port_priv,
1667                                                      port_priv->learn_ena);
1668                 break;
1669         }
1670
1671         return err;
1672 }
1673
1674 static int dpaa2_switch_port_flood(struct ethsw_port_priv *port_priv,
1675                                    struct switchdev_brport_flags flags)
1676 {
1677         struct ethsw_core *ethsw = port_priv->ethsw_data;
1678
1679         if (flags.mask & BR_BCAST_FLOOD)
1680                 port_priv->bcast_flood = !!(flags.val & BR_BCAST_FLOOD);
1681
1682         if (flags.mask & BR_FLOOD)
1683                 port_priv->ucast_flood = !!(flags.val & BR_FLOOD);
1684
1685         return dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
1686 }
1687
1688 static int dpaa2_switch_port_pre_bridge_flags(struct net_device *netdev,
1689                                               struct switchdev_brport_flags flags,
1690                                               struct netlink_ext_ack *extack)
1691 {
1692         if (flags.mask & ~(BR_LEARNING | BR_BCAST_FLOOD | BR_FLOOD |
1693                            BR_MCAST_FLOOD))
1694                 return -EINVAL;
1695
1696         if (flags.mask & (BR_FLOOD | BR_MCAST_FLOOD)) {
1697                 bool multicast = !!(flags.val & BR_MCAST_FLOOD);
1698                 bool unicast = !!(flags.val & BR_FLOOD);
1699
1700                 if (unicast != multicast) {
1701                         NL_SET_ERR_MSG_MOD(extack,
1702                                            "Cannot configure multicast flooding independently of unicast");
1703                         return -EINVAL;
1704                 }
1705         }
1706
1707         return 0;
1708 }
1709
1710 static int dpaa2_switch_port_bridge_flags(struct net_device *netdev,
1711                                           struct switchdev_brport_flags flags,
1712                                           struct netlink_ext_ack *extack)
1713 {
1714         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1715         int err;
1716
1717         if (flags.mask & BR_LEARNING) {
1718                 bool learn_ena = !!(flags.val & BR_LEARNING);
1719
1720                 err = dpaa2_switch_port_set_learning(port_priv, learn_ena);
1721                 if (err)
1722                         return err;
1723                 port_priv->learn_ena = learn_ena;
1724         }
1725
1726         if (flags.mask & (BR_BCAST_FLOOD | BR_FLOOD | BR_MCAST_FLOOD)) {
1727                 err = dpaa2_switch_port_flood(port_priv, flags);
1728                 if (err)
1729                         return err;
1730         }
1731
1732         return 0;
1733 }
1734
1735 static int dpaa2_switch_port_attr_set(struct net_device *netdev, const void *ctx,
1736                                       const struct switchdev_attr *attr,
1737                                       struct netlink_ext_ack *extack)
1738 {
1739         int err = 0;
1740
1741         switch (attr->id) {
1742         case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
1743                 err = dpaa2_switch_port_attr_stp_state_set(netdev,
1744                                                            attr->u.stp_state);
1745                 break;
1746         case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
1747                 if (!attr->u.vlan_filtering) {
1748                         NL_SET_ERR_MSG_MOD(extack,
1749                                            "The DPAA2 switch does not support VLAN-unaware operation");
1750                         return -EOPNOTSUPP;
1751                 }
1752                 break;
1753         case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
1754                 err = dpaa2_switch_port_pre_bridge_flags(netdev, attr->u.brport_flags, extack);
1755                 break;
1756         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
1757                 err = dpaa2_switch_port_bridge_flags(netdev, attr->u.brport_flags, extack);
1758                 break;
1759         default:
1760                 err = -EOPNOTSUPP;
1761                 break;
1762         }
1763
1764         return err;
1765 }
1766
1767 int dpaa2_switch_port_vlans_add(struct net_device *netdev,
1768                                 const struct switchdev_obj_port_vlan *vlan)
1769 {
1770         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
1771         struct ethsw_core *ethsw = port_priv->ethsw_data;
1772         struct dpsw_attr *attr = &ethsw->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                                   &ethsw->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                                   &ethsw->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
1813 static 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
1830 static 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
1853 static 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
1875 static 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
1938 int 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
1949 static 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
1971 static 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
1990 static 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
2001 static struct notifier_block dpaa2_switch_port_switchdev_nb;
2002 static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb;
2003
2004 static int dpaa2_switch_port_bridge_join(struct net_device *netdev,
2005                                          struct net_device *upper_dev,
2006                                          struct netlink_ext_ack *extack)
2007 {
2008         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
2009         struct ethsw_core *ethsw = port_priv->ethsw_data;
2010         struct ethsw_port_priv *other_port_priv;
2011         struct net_device *other_dev;
2012         struct list_head *iter;
2013         bool learn_ena;
2014         int err;
2015
2016         netdev_for_each_lower_dev(upper_dev, other_dev, iter) {
2017                 if (!dpaa2_switch_port_dev_check(other_dev))
2018                         continue;
2019
2020                 other_port_priv = netdev_priv(other_dev);
2021                 if (other_port_priv->ethsw_data != port_priv->ethsw_data) {
2022                         NL_SET_ERR_MSG_MOD(extack,
2023                                            "Interface from a different DPSW is in the bridge already");
2024                         return -EINVAL;
2025                 }
2026         }
2027
2028         /* Delete the previously manually installed VLAN 1 */
2029         err = dpaa2_switch_port_del_vlan(port_priv, 1);
2030         if (err)
2031                 return err;
2032
2033         dpaa2_switch_port_set_fdb(port_priv, upper_dev);
2034
2035         /* Inherit the initial bridge port learning state */
2036         learn_ena = br_port_flag_is_set(netdev, BR_LEARNING);
2037         err = dpaa2_switch_port_set_learning(port_priv, learn_ena);
2038         port_priv->learn_ena = learn_ena;
2039
2040         /* Setup the egress flood policy (broadcast, unknown unicast) */
2041         err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
2042         if (err)
2043                 goto err_egress_flood;
2044
2045         err = switchdev_bridge_port_offload(netdev, netdev, NULL,
2046                                             &dpaa2_switch_port_switchdev_nb,
2047                                             &dpaa2_switch_port_switchdev_blocking_nb,
2048                                             false, extack);
2049         if (err)
2050                 goto err_switchdev_offload;
2051
2052         return 0;
2053
2054 err_switchdev_offload:
2055 err_egress_flood:
2056         dpaa2_switch_port_set_fdb(port_priv, NULL);
2057         return err;
2058 }
2059
2060 static int dpaa2_switch_port_clear_rxvlan(struct net_device *vdev, int vid, void *arg)
2061 {
2062         __be16 vlan_proto = htons(ETH_P_8021Q);
2063
2064         if (vdev)
2065                 vlan_proto = vlan_dev_vlan_proto(vdev);
2066
2067         return dpaa2_switch_port_vlan_kill(arg, vlan_proto, vid);
2068 }
2069
2070 static int dpaa2_switch_port_restore_rxvlan(struct net_device *vdev, int vid, void *arg)
2071 {
2072         __be16 vlan_proto = htons(ETH_P_8021Q);
2073
2074         if (vdev)
2075                 vlan_proto = vlan_dev_vlan_proto(vdev);
2076
2077         return dpaa2_switch_port_vlan_add(arg, vlan_proto, vid);
2078 }
2079
2080 static void dpaa2_switch_port_pre_bridge_leave(struct net_device *netdev)
2081 {
2082         switchdev_bridge_port_unoffload(netdev, NULL,
2083                                         &dpaa2_switch_port_switchdev_nb,
2084                                         &dpaa2_switch_port_switchdev_blocking_nb);
2085 }
2086
2087 static int dpaa2_switch_port_bridge_leave(struct net_device *netdev)
2088 {
2089         struct ethsw_port_priv *port_priv = netdev_priv(netdev);
2090         struct dpaa2_switch_fdb *old_fdb = port_priv->fdb;
2091         struct ethsw_core *ethsw = port_priv->ethsw_data;
2092         int err;
2093
2094         /* First of all, fast age any learn FDB addresses on this switch port */
2095         dpaa2_switch_port_fast_age(port_priv);
2096
2097         /* Clear all RX VLANs installed through vlan_vid_add() either as VLAN
2098          * upper devices or otherwise from the FDB table that we are about to
2099          * leave
2100          */
2101         err = vlan_for_each(netdev, dpaa2_switch_port_clear_rxvlan, netdev);
2102         if (err)
2103                 netdev_err(netdev, "Unable to clear RX VLANs from old FDB table, err (%d)\n", err);
2104
2105         dpaa2_switch_port_set_fdb(port_priv, NULL);
2106
2107         /* Restore all RX VLANs into the new FDB table that we just joined */
2108         err = vlan_for_each(netdev, dpaa2_switch_port_restore_rxvlan, netdev);
2109         if (err)
2110                 netdev_err(netdev, "Unable to restore RX VLANs to the new FDB, err (%d)\n", err);
2111
2112         /* Reset the flooding state to denote that this port can send any
2113          * packet in standalone mode. With this, we are also ensuring that any
2114          * later bridge join will have the flooding flag on.
2115          */
2116         port_priv->bcast_flood = true;
2117         port_priv->ucast_flood = true;
2118
2119         /* Setup the egress flood policy (broadcast, unknown unicast).
2120          * When the port is not under a bridge, only the CTRL interface is part
2121          * of the flooding domain besides the actual port
2122          */
2123         err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
2124         if (err)
2125                 return err;
2126
2127         /* Recreate the egress flood domain of the FDB that we just left */
2128         err = dpaa2_switch_fdb_set_egress_flood(ethsw, old_fdb->fdb_id);
2129         if (err)
2130                 return err;
2131
2132         /* No HW learning when not under a bridge */
2133         err = dpaa2_switch_port_set_learning(port_priv, false);
2134         if (err)
2135                 return err;
2136         port_priv->learn_ena = false;
2137
2138         /* Add the VLAN 1 as PVID when not under a bridge. We need this since
2139          * the dpaa2 switch interfaces are not capable to be VLAN unaware
2140          */
2141         return dpaa2_switch_port_add_vlan(port_priv, DEFAULT_VLAN_ID,
2142                                           BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID);
2143 }
2144
2145 static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *netdev)
2146 {
2147         struct net_device *upper_dev;
2148         struct list_head *iter;
2149
2150         /* RCU read lock not necessary because we have write-side protection
2151          * (rtnl_mutex), however a non-rcu iterator does not exist.
2152          */
2153         netdev_for_each_upper_dev_rcu(netdev, upper_dev, iter)
2154                 if (is_vlan_dev(upper_dev))
2155                         return -EOPNOTSUPP;
2156
2157         return 0;
2158 }
2159
2160 static int
2161 dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev,
2162                                           struct net_device *upper_dev,
2163                                           struct netlink_ext_ack *extack)
2164 {
2165         int err;
2166
2167         if (!br_vlan_enabled(upper_dev)) {
2168                 NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge");
2169                 return -EOPNOTSUPP;
2170         }
2171
2172         err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev);
2173         if (err) {
2174                 NL_SET_ERR_MSG_MOD(extack,
2175                                    "Cannot join a bridge while VLAN uppers are present");
2176                 return 0;
2177         }
2178
2179         return 0;
2180 }
2181
2182 static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb,
2183                                              unsigned long event, void *ptr)
2184 {
2185         struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
2186         struct netdev_notifier_changeupper_info *info = ptr;
2187         struct netlink_ext_ack *extack;
2188         struct net_device *upper_dev;
2189         int err = 0;
2190
2191         if (!dpaa2_switch_port_dev_check(netdev))
2192                 return NOTIFY_DONE;
2193
2194         extack = netdev_notifier_info_to_extack(&info->info);
2195
2196         switch (event) {
2197         case NETDEV_PRECHANGEUPPER:
2198                 upper_dev = info->upper_dev;
2199                 if (!netif_is_bridge_master(upper_dev))
2200                         break;
2201
2202                 err = dpaa2_switch_prechangeupper_sanity_checks(netdev,
2203                                                                 upper_dev,
2204                                                                 extack);
2205                 if (err)
2206                         goto out;
2207
2208                 if (!info->linking)
2209                         dpaa2_switch_port_pre_bridge_leave(netdev);
2210
2211                 break;
2212         case NETDEV_CHANGEUPPER:
2213                 upper_dev = info->upper_dev;
2214                 if (netif_is_bridge_master(upper_dev)) {
2215                         if (info->linking)
2216                                 err = dpaa2_switch_port_bridge_join(netdev,
2217                                                                     upper_dev,
2218                                                                     extack);
2219                         else
2220                                 err = dpaa2_switch_port_bridge_leave(netdev);
2221                 }
2222                 break;
2223         }
2224
2225 out:
2226         return notifier_from_errno(err);
2227 }
2228
2229 struct ethsw_switchdev_event_work {
2230         struct work_struct work;
2231         struct switchdev_notifier_fdb_info fdb_info;
2232         struct net_device *dev;
2233         unsigned long event;
2234 };
2235
2236 static void dpaa2_switch_event_work(struct work_struct *work)
2237 {
2238         struct ethsw_switchdev_event_work *switchdev_work =
2239                 container_of(work, struct ethsw_switchdev_event_work, work);
2240         struct net_device *dev = switchdev_work->dev;
2241         struct switchdev_notifier_fdb_info *fdb_info;
2242         int err;
2243
2244         rtnl_lock();
2245         fdb_info = &switchdev_work->fdb_info;
2246
2247         switch (switchdev_work->event) {
2248         case SWITCHDEV_FDB_ADD_TO_DEVICE:
2249                 if (!fdb_info->added_by_user || fdb_info->is_local)
2250                         break;
2251                 if (is_unicast_ether_addr(fdb_info->addr))
2252                         err = dpaa2_switch_port_fdb_add_uc(netdev_priv(dev),
2253                                                            fdb_info->addr);
2254                 else
2255                         err = dpaa2_switch_port_fdb_add_mc(netdev_priv(dev),
2256                                                            fdb_info->addr);
2257                 if (err)
2258                         break;
2259                 fdb_info->offloaded = true;
2260                 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
2261                                          &fdb_info->info, NULL);
2262                 break;
2263         case SWITCHDEV_FDB_DEL_TO_DEVICE:
2264                 if (!fdb_info->added_by_user || fdb_info->is_local)
2265                         break;
2266                 if (is_unicast_ether_addr(fdb_info->addr))
2267                         dpaa2_switch_port_fdb_del_uc(netdev_priv(dev), fdb_info->addr);
2268                 else
2269                         dpaa2_switch_port_fdb_del_mc(netdev_priv(dev), fdb_info->addr);
2270                 break;
2271         }
2272
2273         rtnl_unlock();
2274         kfree(switchdev_work->fdb_info.addr);
2275         kfree(switchdev_work);
2276         dev_put(dev);
2277 }
2278
2279 /* Called under rcu_read_lock() */
2280 static int dpaa2_switch_port_event(struct notifier_block *nb,
2281                                    unsigned long event, void *ptr)
2282 {
2283         struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2284         struct ethsw_port_priv *port_priv = netdev_priv(dev);
2285         struct ethsw_switchdev_event_work *switchdev_work;
2286         struct switchdev_notifier_fdb_info *fdb_info = ptr;
2287         struct ethsw_core *ethsw = port_priv->ethsw_data;
2288
2289         if (event == SWITCHDEV_PORT_ATTR_SET)
2290                 return dpaa2_switch_port_attr_set_event(dev, ptr);
2291
2292         if (!dpaa2_switch_port_dev_check(dev))
2293                 return NOTIFY_DONE;
2294
2295         switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
2296         if (!switchdev_work)
2297                 return NOTIFY_BAD;
2298
2299         INIT_WORK(&switchdev_work->work, dpaa2_switch_event_work);
2300         switchdev_work->dev = dev;
2301         switchdev_work->event = event;
2302
2303         switch (event) {
2304         case SWITCHDEV_FDB_ADD_TO_DEVICE:
2305         case SWITCHDEV_FDB_DEL_TO_DEVICE:
2306                 memcpy(&switchdev_work->fdb_info, ptr,
2307                        sizeof(switchdev_work->fdb_info));
2308                 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
2309                 if (!switchdev_work->fdb_info.addr)
2310                         goto err_addr_alloc;
2311
2312                 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
2313                                 fdb_info->addr);
2314
2315                 /* Take a reference on the device to avoid being freed. */
2316                 dev_hold(dev);
2317                 break;
2318         default:
2319                 kfree(switchdev_work);
2320                 return NOTIFY_DONE;
2321         }
2322
2323         queue_work(ethsw->workqueue, &switchdev_work->work);
2324
2325         return NOTIFY_DONE;
2326
2327 err_addr_alloc:
2328         kfree(switchdev_work);
2329         return NOTIFY_BAD;
2330 }
2331
2332 static int dpaa2_switch_port_obj_event(unsigned long event,
2333                                        struct net_device *netdev,
2334                                        struct switchdev_notifier_port_obj_info *port_obj_info)
2335 {
2336         int err = -EOPNOTSUPP;
2337
2338         if (!dpaa2_switch_port_dev_check(netdev))
2339                 return NOTIFY_DONE;
2340
2341         switch (event) {
2342         case SWITCHDEV_PORT_OBJ_ADD:
2343                 err = dpaa2_switch_port_obj_add(netdev, port_obj_info->obj);
2344                 break;
2345         case SWITCHDEV_PORT_OBJ_DEL:
2346                 err = dpaa2_switch_port_obj_del(netdev, port_obj_info->obj);
2347                 break;
2348         }
2349
2350         port_obj_info->handled = true;
2351         return notifier_from_errno(err);
2352 }
2353
2354 static int dpaa2_switch_port_blocking_event(struct notifier_block *nb,
2355                                             unsigned long event, void *ptr)
2356 {
2357         struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2358
2359         switch (event) {
2360         case SWITCHDEV_PORT_OBJ_ADD:
2361         case SWITCHDEV_PORT_OBJ_DEL:
2362                 return dpaa2_switch_port_obj_event(event, dev, ptr);
2363         case SWITCHDEV_PORT_ATTR_SET:
2364                 return dpaa2_switch_port_attr_set_event(dev, ptr);
2365         }
2366
2367         return NOTIFY_DONE;
2368 }
2369
2370 /* Build a linear skb based on a single-buffer frame descriptor */
2371 static struct sk_buff *dpaa2_switch_build_linear_skb(struct ethsw_core *ethsw,
2372                                                      const struct dpaa2_fd *fd)
2373 {
2374         u16 fd_offset = dpaa2_fd_get_offset(fd);
2375         dma_addr_t addr = dpaa2_fd_get_addr(fd);
2376         u32 fd_length = dpaa2_fd_get_len(fd);
2377         struct device *dev = ethsw->dev;
2378         struct sk_buff *skb = NULL;
2379         void *fd_vaddr;
2380
2381         fd_vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, addr);
2382         dma_unmap_page(dev, addr, DPAA2_SWITCH_RX_BUF_SIZE,
2383                        DMA_FROM_DEVICE);
2384
2385         skb = build_skb(fd_vaddr, DPAA2_SWITCH_RX_BUF_SIZE +
2386                         SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
2387         if (unlikely(!skb)) {
2388                 dev_err(dev, "build_skb() failed\n");
2389                 return NULL;
2390         }
2391
2392         skb_reserve(skb, fd_offset);
2393         skb_put(skb, fd_length);
2394
2395         ethsw->buf_count--;
2396
2397         return skb;
2398 }
2399
2400 static void dpaa2_switch_tx_conf(struct dpaa2_switch_fq *fq,
2401                                  const struct dpaa2_fd *fd)
2402 {
2403         dpaa2_switch_free_fd(fq->ethsw, fd);
2404 }
2405
2406 static void dpaa2_switch_rx(struct dpaa2_switch_fq *fq,
2407                             const struct dpaa2_fd *fd)
2408 {
2409         struct ethsw_core *ethsw = fq->ethsw;
2410         struct ethsw_port_priv *port_priv;
2411         struct net_device *netdev;
2412         struct vlan_ethhdr *hdr;
2413         struct sk_buff *skb;
2414         u16 vlan_tci, vid;
2415         int if_id, err;
2416
2417         /* get switch ingress interface ID */
2418         if_id = upper_32_bits(dpaa2_fd_get_flc(fd)) & 0x0000FFFF;
2419
2420         if (if_id >= ethsw->sw_attr.num_ifs) {
2421                 dev_err(ethsw->dev, "Frame received from unknown interface!\n");
2422                 goto err_free_fd;
2423         }
2424         port_priv = ethsw->ports[if_id];
2425         netdev = port_priv->netdev;
2426
2427         /* build the SKB based on the FD received */
2428         if (dpaa2_fd_get_format(fd) != dpaa2_fd_single) {
2429                 if (net_ratelimit()) {
2430                         netdev_err(netdev, "Received invalid frame format\n");
2431                         goto err_free_fd;
2432                 }
2433         }
2434
2435         skb = dpaa2_switch_build_linear_skb(ethsw, fd);
2436         if (unlikely(!skb))
2437                 goto err_free_fd;
2438
2439         skb_reset_mac_header(skb);
2440
2441         /* Remove the VLAN header if the packet that we just received has a vid
2442          * equal to the port PVIDs. Since the dpaa2-switch can operate only in
2443          * VLAN-aware mode and no alterations are made on the packet when it's
2444          * redirected/mirrored to the control interface, we are sure that there
2445          * will always be a VLAN header present.
2446          */
2447         hdr = vlan_eth_hdr(skb);
2448         vid = ntohs(hdr->h_vlan_TCI) & VLAN_VID_MASK;
2449         if (vid == port_priv->pvid) {
2450                 err = __skb_vlan_pop(skb, &vlan_tci);
2451                 if (err) {
2452                         dev_info(ethsw->dev, "__skb_vlan_pop() returned %d", err);
2453                         goto err_free_fd;
2454                 }
2455         }
2456
2457         skb->dev = netdev;
2458         skb->protocol = eth_type_trans(skb, skb->dev);
2459
2460         /* Setup the offload_fwd_mark only if the port is under a bridge */
2461         skb->offload_fwd_mark = !!(port_priv->fdb->bridge_dev);
2462
2463         netif_receive_skb(skb);
2464
2465         return;
2466
2467 err_free_fd:
2468         dpaa2_switch_free_fd(ethsw, fd);
2469 }
2470
2471 static void dpaa2_switch_detect_features(struct ethsw_core *ethsw)
2472 {
2473         ethsw->features = 0;
2474
2475         if (ethsw->major > 8 || (ethsw->major == 8 && ethsw->minor >= 6))
2476                 ethsw->features |= ETHSW_FEATURE_MAC_ADDR;
2477 }
2478
2479 static int dpaa2_switch_setup_fqs(struct ethsw_core *ethsw)
2480 {
2481         struct dpsw_ctrl_if_attr ctrl_if_attr;
2482         struct device *dev = ethsw->dev;
2483         int i = 0;
2484         int err;
2485
2486         err = dpsw_ctrl_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
2487                                           &ctrl_if_attr);
2488         if (err) {
2489                 dev_err(dev, "dpsw_ctrl_if_get_attributes() = %d\n", err);
2490                 return err;
2491         }
2492
2493         ethsw->fq[i].fqid = ctrl_if_attr.rx_fqid;
2494         ethsw->fq[i].ethsw = ethsw;
2495         ethsw->fq[i++].type = DPSW_QUEUE_RX;
2496
2497         ethsw->fq[i].fqid = ctrl_if_attr.tx_err_conf_fqid;
2498         ethsw->fq[i].ethsw = ethsw;
2499         ethsw->fq[i++].type = DPSW_QUEUE_TX_ERR_CONF;
2500
2501         return 0;
2502 }
2503
2504 /* Free buffers acquired from the buffer pool or which were meant to
2505  * be released in the pool
2506  */
2507 static void dpaa2_switch_free_bufs(struct ethsw_core *ethsw, u64 *buf_array, int count)
2508 {
2509         struct device *dev = ethsw->dev;
2510         void *vaddr;
2511         int i;
2512
2513         for (i = 0; i < count; i++) {
2514                 vaddr = dpaa2_iova_to_virt(ethsw->iommu_domain, buf_array[i]);
2515                 dma_unmap_page(dev, buf_array[i], DPAA2_SWITCH_RX_BUF_SIZE,
2516                                DMA_FROM_DEVICE);
2517                 free_pages((unsigned long)vaddr, 0);
2518         }
2519 }
2520
2521 /* Perform a single release command to add buffers
2522  * to the specified buffer pool
2523  */
2524 static int dpaa2_switch_add_bufs(struct ethsw_core *ethsw, u16 bpid)
2525 {
2526         struct device *dev = ethsw->dev;
2527         u64 buf_array[BUFS_PER_CMD];
2528         struct page *page;
2529         int retries = 0;
2530         dma_addr_t addr;
2531         int err;
2532         int i;
2533
2534         for (i = 0; i < BUFS_PER_CMD; i++) {
2535                 /* Allocate one page for each Rx buffer. WRIOP sees
2536                  * the entire page except for a tailroom reserved for
2537                  * skb shared info
2538                  */
2539                 page = dev_alloc_pages(0);
2540                 if (!page) {
2541                         dev_err(dev, "buffer allocation failed\n");
2542                         goto err_alloc;
2543                 }
2544
2545                 addr = dma_map_page(dev, page, 0, DPAA2_SWITCH_RX_BUF_SIZE,
2546                                     DMA_FROM_DEVICE);
2547                 if (dma_mapping_error(dev, addr)) {
2548                         dev_err(dev, "dma_map_single() failed\n");
2549                         goto err_map;
2550                 }
2551                 buf_array[i] = addr;
2552         }
2553
2554 release_bufs:
2555         /* In case the portal is busy, retry until successful or
2556          * max retries hit.
2557          */
2558         while ((err = dpaa2_io_service_release(NULL, bpid,
2559                                                buf_array, i)) == -EBUSY) {
2560                 if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES)
2561                         break;
2562
2563                 cpu_relax();
2564         }
2565
2566         /* If release command failed, clean up and bail out. */
2567         if (err) {
2568                 dpaa2_switch_free_bufs(ethsw, buf_array, i);
2569                 return 0;
2570         }
2571
2572         return i;
2573
2574 err_map:
2575         __free_pages(page, 0);
2576 err_alloc:
2577         /* If we managed to allocate at least some buffers,
2578          * release them to hardware
2579          */
2580         if (i)
2581                 goto release_bufs;
2582
2583         return 0;
2584 }
2585
2586 static int dpaa2_switch_refill_bp(struct ethsw_core *ethsw)
2587 {
2588         int *count = &ethsw->buf_count;
2589         int new_count;
2590         int err = 0;
2591
2592         if (unlikely(*count < DPAA2_ETHSW_REFILL_THRESH)) {
2593                 do {
2594                         new_count = dpaa2_switch_add_bufs(ethsw, ethsw->bpid);
2595                         if (unlikely(!new_count)) {
2596                                 /* Out of memory; abort for now, we'll
2597                                  * try later on
2598                                  */
2599                                 break;
2600                         }
2601                         *count += new_count;
2602                 } while (*count < DPAA2_ETHSW_NUM_BUFS);
2603
2604                 if (unlikely(*count < DPAA2_ETHSW_NUM_BUFS))
2605                         err = -ENOMEM;
2606         }
2607
2608         return err;
2609 }
2610
2611 static int dpaa2_switch_seed_bp(struct ethsw_core *ethsw)
2612 {
2613         int *count, i;
2614
2615         for (i = 0; i < DPAA2_ETHSW_NUM_BUFS; i += BUFS_PER_CMD) {
2616                 count = &ethsw->buf_count;
2617                 *count += dpaa2_switch_add_bufs(ethsw, ethsw->bpid);
2618
2619                 if (unlikely(*count < BUFS_PER_CMD))
2620                         return -ENOMEM;
2621         }
2622
2623         return 0;
2624 }
2625
2626 static void dpaa2_switch_drain_bp(struct ethsw_core *ethsw)
2627 {
2628         u64 buf_array[BUFS_PER_CMD];
2629         int ret;
2630
2631         do {
2632                 ret = dpaa2_io_service_acquire(NULL, ethsw->bpid,
2633                                                buf_array, BUFS_PER_CMD);
2634                 if (ret < 0) {
2635                         dev_err(ethsw->dev,
2636                                 "dpaa2_io_service_acquire() = %d\n", ret);
2637                         return;
2638                 }
2639                 dpaa2_switch_free_bufs(ethsw, buf_array, ret);
2640
2641         } while (ret);
2642 }
2643
2644 static int dpaa2_switch_setup_dpbp(struct ethsw_core *ethsw)
2645 {
2646         struct dpsw_ctrl_if_pools_cfg dpsw_ctrl_if_pools_cfg = { 0 };
2647         struct device *dev = ethsw->dev;
2648         struct fsl_mc_device *dpbp_dev;
2649         struct dpbp_attr dpbp_attrs;
2650         int err;
2651
2652         err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPBP,
2653                                      &dpbp_dev);
2654         if (err) {
2655                 if (err == -ENXIO)
2656                         err = -EPROBE_DEFER;
2657                 else
2658                         dev_err(dev, "DPBP device allocation failed\n");
2659                 return err;
2660         }
2661         ethsw->dpbp_dev = dpbp_dev;
2662
2663         err = dpbp_open(ethsw->mc_io, 0, dpbp_dev->obj_desc.id,
2664                         &dpbp_dev->mc_handle);
2665         if (err) {
2666                 dev_err(dev, "dpbp_open() failed\n");
2667                 goto err_open;
2668         }
2669
2670         err = dpbp_reset(ethsw->mc_io, 0, dpbp_dev->mc_handle);
2671         if (err) {
2672                 dev_err(dev, "dpbp_reset() failed\n");
2673                 goto err_reset;
2674         }
2675
2676         err = dpbp_enable(ethsw->mc_io, 0, dpbp_dev->mc_handle);
2677         if (err) {
2678                 dev_err(dev, "dpbp_enable() failed\n");
2679                 goto err_enable;
2680         }
2681
2682         err = dpbp_get_attributes(ethsw->mc_io, 0, dpbp_dev->mc_handle,
2683                                   &dpbp_attrs);
2684         if (err) {
2685                 dev_err(dev, "dpbp_get_attributes() failed\n");
2686                 goto err_get_attr;
2687         }
2688
2689         dpsw_ctrl_if_pools_cfg.num_dpbp = 1;
2690         dpsw_ctrl_if_pools_cfg.pools[0].dpbp_id = dpbp_attrs.id;
2691         dpsw_ctrl_if_pools_cfg.pools[0].buffer_size = DPAA2_SWITCH_RX_BUF_SIZE;
2692         dpsw_ctrl_if_pools_cfg.pools[0].backup_pool = 0;
2693
2694         err = dpsw_ctrl_if_set_pools(ethsw->mc_io, 0, ethsw->dpsw_handle,
2695                                      &dpsw_ctrl_if_pools_cfg);
2696         if (err) {
2697                 dev_err(dev, "dpsw_ctrl_if_set_pools() failed\n");
2698                 goto err_get_attr;
2699         }
2700         ethsw->bpid = dpbp_attrs.id;
2701
2702         return 0;
2703
2704 err_get_attr:
2705         dpbp_disable(ethsw->mc_io, 0, dpbp_dev->mc_handle);
2706 err_enable:
2707 err_reset:
2708         dpbp_close(ethsw->mc_io, 0, dpbp_dev->mc_handle);
2709 err_open:
2710         fsl_mc_object_free(dpbp_dev);
2711         return err;
2712 }
2713
2714 static void dpaa2_switch_free_dpbp(struct ethsw_core *ethsw)
2715 {
2716         dpbp_disable(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle);
2717         dpbp_close(ethsw->mc_io, 0, ethsw->dpbp_dev->mc_handle);
2718         fsl_mc_object_free(ethsw->dpbp_dev);
2719 }
2720
2721 static int dpaa2_switch_alloc_rings(struct ethsw_core *ethsw)
2722 {
2723         int i;
2724
2725         for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) {
2726                 ethsw->fq[i].store =
2727                         dpaa2_io_store_create(DPAA2_SWITCH_STORE_SIZE,
2728                                               ethsw->dev);
2729                 if (!ethsw->fq[i].store) {
2730                         dev_err(ethsw->dev, "dpaa2_io_store_create failed\n");
2731                         while (--i >= 0)
2732                                 dpaa2_io_store_destroy(ethsw->fq[i].store);
2733                         return -ENOMEM;
2734                 }
2735         }
2736
2737         return 0;
2738 }
2739
2740 static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw)
2741 {
2742         int i;
2743
2744         for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
2745                 dpaa2_io_store_destroy(ethsw->fq[i].store);
2746 }
2747
2748 static int dpaa2_switch_pull_fq(struct dpaa2_switch_fq *fq)
2749 {
2750         int err, retries = 0;
2751
2752         /* Try to pull from the FQ while the portal is busy and we didn't hit
2753          * the maximum number fo retries
2754          */
2755         do {
2756                 err = dpaa2_io_service_pull_fq(NULL, fq->fqid, fq->store);
2757                 cpu_relax();
2758         } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES);
2759
2760         if (unlikely(err))
2761                 dev_err(fq->ethsw->dev, "dpaa2_io_service_pull err %d", err);
2762
2763         return err;
2764 }
2765
2766 /* Consume all frames pull-dequeued into the store */
2767 static int dpaa2_switch_store_consume(struct dpaa2_switch_fq *fq)
2768 {
2769         struct ethsw_core *ethsw = fq->ethsw;
2770         int cleaned = 0, is_last;
2771         struct dpaa2_dq *dq;
2772         int retries = 0;
2773
2774         do {
2775                 /* Get the next available FD from the store */
2776                 dq = dpaa2_io_store_next(fq->store, &is_last);
2777                 if (unlikely(!dq)) {
2778                         if (retries++ >= DPAA2_SWITCH_SWP_BUSY_RETRIES) {
2779                                 dev_err_once(ethsw->dev,
2780                                              "No valid dequeue response\n");
2781                                 return -ETIMEDOUT;
2782                         }
2783                         continue;
2784                 }
2785
2786                 if (fq->type == DPSW_QUEUE_RX)
2787                         dpaa2_switch_rx(fq, dpaa2_dq_fd(dq));
2788                 else
2789                         dpaa2_switch_tx_conf(fq, dpaa2_dq_fd(dq));
2790                 cleaned++;
2791
2792         } while (!is_last);
2793
2794         return cleaned;
2795 }
2796
2797 /* NAPI poll routine */
2798 static int dpaa2_switch_poll(struct napi_struct *napi, int budget)
2799 {
2800         int err, cleaned = 0, store_cleaned, work_done;
2801         struct dpaa2_switch_fq *fq;
2802         int retries = 0;
2803
2804         fq = container_of(napi, struct dpaa2_switch_fq, napi);
2805
2806         do {
2807                 err = dpaa2_switch_pull_fq(fq);
2808                 if (unlikely(err))
2809                         break;
2810
2811                 /* Refill pool if appropriate */
2812                 dpaa2_switch_refill_bp(fq->ethsw);
2813
2814                 store_cleaned = dpaa2_switch_store_consume(fq);
2815                 cleaned += store_cleaned;
2816
2817                 if (cleaned >= budget) {
2818                         work_done = budget;
2819                         goto out;
2820                 }
2821
2822         } while (store_cleaned);
2823
2824         /* We didn't consume the entire budget, so finish napi and re-enable
2825          * data availability notifications
2826          */
2827         napi_complete_done(napi, cleaned);
2828         do {
2829                 err = dpaa2_io_service_rearm(NULL, &fq->nctx);
2830                 cpu_relax();
2831         } while (err == -EBUSY && retries++ < DPAA2_SWITCH_SWP_BUSY_RETRIES);
2832
2833         work_done = max(cleaned, 1);
2834 out:
2835
2836         return work_done;
2837 }
2838
2839 static void dpaa2_switch_fqdan_cb(struct dpaa2_io_notification_ctx *nctx)
2840 {
2841         struct dpaa2_switch_fq *fq;
2842
2843         fq = container_of(nctx, struct dpaa2_switch_fq, nctx);
2844
2845         napi_schedule(&fq->napi);
2846 }
2847
2848 static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw)
2849 {
2850         struct dpsw_ctrl_if_queue_cfg queue_cfg;
2851         struct dpaa2_io_notification_ctx *nctx;
2852         int err, i, j;
2853
2854         for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) {
2855                 nctx = &ethsw->fq[i].nctx;
2856
2857                 /* Register a new software context for the FQID.
2858                  * By using NULL as the first parameter, we specify that we do
2859                  * not care on which cpu are interrupts received for this queue
2860                  */
2861                 nctx->is_cdan = 0;
2862                 nctx->id = ethsw->fq[i].fqid;
2863                 nctx->desired_cpu = DPAA2_IO_ANY_CPU;
2864                 nctx->cb = dpaa2_switch_fqdan_cb;
2865                 err = dpaa2_io_service_register(NULL, nctx, ethsw->dev);
2866                 if (err) {
2867                         err = -EPROBE_DEFER;
2868                         goto err_register;
2869                 }
2870
2871                 queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST |
2872                                     DPSW_CTRL_IF_QUEUE_OPT_USER_CTX;
2873                 queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO;
2874                 queue_cfg.dest_cfg.dest_id = nctx->dpio_id;
2875                 queue_cfg.dest_cfg.priority = 0;
2876                 queue_cfg.user_ctx = nctx->qman64;
2877
2878                 err = dpsw_ctrl_if_set_queue(ethsw->mc_io, 0,
2879                                              ethsw->dpsw_handle,
2880                                              ethsw->fq[i].type,
2881                                              &queue_cfg);
2882                 if (err)
2883                         goto err_set_queue;
2884         }
2885
2886         return 0;
2887
2888 err_set_queue:
2889         dpaa2_io_service_deregister(NULL, nctx, ethsw->dev);
2890 err_register:
2891         for (j = 0; j < i; j++)
2892                 dpaa2_io_service_deregister(NULL, &ethsw->fq[j].nctx,
2893                                             ethsw->dev);
2894
2895         return err;
2896 }
2897
2898 static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw)
2899 {
2900         int i;
2901
2902         for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
2903                 dpaa2_io_service_deregister(NULL, &ethsw->fq[i].nctx,
2904                                             ethsw->dev);
2905 }
2906
2907 static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
2908 {
2909         int err;
2910
2911         /* setup FQs for Rx and Tx Conf */
2912         err = dpaa2_switch_setup_fqs(ethsw);
2913         if (err)
2914                 return err;
2915
2916         /* setup the buffer pool needed on the Rx path */
2917         err = dpaa2_switch_setup_dpbp(ethsw);
2918         if (err)
2919                 return err;
2920
2921         err = dpaa2_switch_alloc_rings(ethsw);
2922         if (err)
2923                 goto err_free_dpbp;
2924
2925         err = dpaa2_switch_setup_dpio(ethsw);
2926         if (err)
2927                 goto err_destroy_rings;
2928
2929         err = dpaa2_switch_seed_bp(ethsw);
2930         if (err)
2931                 goto err_deregister_dpio;
2932
2933         err = dpsw_ctrl_if_enable(ethsw->mc_io, 0, ethsw->dpsw_handle);
2934         if (err) {
2935                 dev_err(ethsw->dev, "dpsw_ctrl_if_enable err %d\n", err);
2936                 goto err_drain_dpbp;
2937         }
2938
2939         return 0;
2940
2941 err_drain_dpbp:
2942         dpaa2_switch_drain_bp(ethsw);
2943 err_deregister_dpio:
2944         dpaa2_switch_free_dpio(ethsw);
2945 err_destroy_rings:
2946         dpaa2_switch_destroy_rings(ethsw);
2947 err_free_dpbp:
2948         dpaa2_switch_free_dpbp(ethsw);
2949
2950         return err;
2951 }
2952
2953 static void dpaa2_switch_remove_port(struct ethsw_core *ethsw,
2954                                      u16 port_idx)
2955 {
2956         struct ethsw_port_priv *port_priv = ethsw->ports[port_idx];
2957
2958         dpaa2_switch_port_disconnect_mac(port_priv);
2959         free_netdev(port_priv->netdev);
2960         ethsw->ports[port_idx] = NULL;
2961 }
2962
2963 static int dpaa2_switch_init(struct fsl_mc_device *sw_dev)
2964 {
2965         struct device *dev = &sw_dev->dev;
2966         struct ethsw_core *ethsw = dev_get_drvdata(dev);
2967         struct dpsw_vlan_if_cfg vcfg = {0};
2968         struct dpsw_tci_cfg tci_cfg = {0};
2969         struct dpsw_stp_cfg stp_cfg;
2970         int err;
2971         u16 i;
2972
2973         ethsw->dev_id = sw_dev->obj_desc.id;
2974
2975         err = dpsw_open(ethsw->mc_io, 0, ethsw->dev_id, &ethsw->dpsw_handle);
2976         if (err) {
2977                 dev_err(dev, "dpsw_open err %d\n", err);
2978                 return err;
2979         }
2980
2981         err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
2982                                   &ethsw->sw_attr);
2983         if (err) {
2984                 dev_err(dev, "dpsw_get_attributes err %d\n", err);
2985                 goto err_close;
2986         }
2987
2988         err = dpsw_get_api_version(ethsw->mc_io, 0,
2989                                    &ethsw->major,
2990                                    &ethsw->minor);
2991         if (err) {
2992                 dev_err(dev, "dpsw_get_api_version err %d\n", err);
2993                 goto err_close;
2994         }
2995
2996         /* Minimum supported DPSW version check */
2997         if (ethsw->major < DPSW_MIN_VER_MAJOR ||
2998             (ethsw->major == DPSW_MIN_VER_MAJOR &&
2999              ethsw->minor < DPSW_MIN_VER_MINOR)) {
3000                 dev_err(dev, "DPSW version %d:%d not supported. Use firmware 10.28.0 or greater.\n",
3001                         ethsw->major, ethsw->minor);
3002                 err = -EOPNOTSUPP;
3003                 goto err_close;
3004         }
3005
3006         if (!dpaa2_switch_supports_cpu_traffic(ethsw)) {
3007                 err = -EOPNOTSUPP;
3008                 goto err_close;
3009         }
3010
3011         dpaa2_switch_detect_features(ethsw);
3012
3013         err = dpsw_reset(ethsw->mc_io, 0, ethsw->dpsw_handle);
3014         if (err) {
3015                 dev_err(dev, "dpsw_reset err %d\n", err);
3016                 goto err_close;
3017         }
3018
3019         stp_cfg.vlan_id = DEFAULT_VLAN_ID;
3020         stp_cfg.state = DPSW_STP_STATE_FORWARDING;
3021
3022         for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
3023                 err = dpsw_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle, i);
3024                 if (err) {
3025                         dev_err(dev, "dpsw_if_disable err %d\n", err);
3026                         goto err_close;
3027                 }
3028
3029                 err = dpsw_if_set_stp(ethsw->mc_io, 0, ethsw->dpsw_handle, i,
3030                                       &stp_cfg);
3031                 if (err) {
3032                         dev_err(dev, "dpsw_if_set_stp err %d for port %d\n",
3033                                 err, i);
3034                         goto err_close;
3035                 }
3036
3037                 /* Switch starts with all ports configured to VLAN 1. Need to
3038                  * remove this setting to allow configuration at bridge join
3039                  */
3040                 vcfg.num_ifs = 1;
3041                 vcfg.if_id[0] = i;
3042                 err = dpsw_vlan_remove_if_untagged(ethsw->mc_io, 0, ethsw->dpsw_handle,
3043                                                    DEFAULT_VLAN_ID, &vcfg);
3044                 if (err) {
3045                         dev_err(dev, "dpsw_vlan_remove_if_untagged err %d\n",
3046                                 err);
3047                         goto err_close;
3048                 }
3049
3050                 tci_cfg.vlan_id = 4095;
3051                 err = dpsw_if_set_tci(ethsw->mc_io, 0, ethsw->dpsw_handle, i, &tci_cfg);
3052                 if (err) {
3053                         dev_err(dev, "dpsw_if_set_tci err %d\n", err);
3054                         goto err_close;
3055                 }
3056
3057                 err = dpsw_vlan_remove_if(ethsw->mc_io, 0, ethsw->dpsw_handle,
3058                                           DEFAULT_VLAN_ID, &vcfg);
3059                 if (err) {
3060                         dev_err(dev, "dpsw_vlan_remove_if err %d\n", err);
3061                         goto err_close;
3062                 }
3063         }
3064
3065         err = dpsw_vlan_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, DEFAULT_VLAN_ID);
3066         if (err) {
3067                 dev_err(dev, "dpsw_vlan_remove err %d\n", err);
3068                 goto err_close;
3069         }
3070
3071         ethsw->workqueue = alloc_ordered_workqueue("%s_%d_ordered",
3072                                                    WQ_MEM_RECLAIM, "ethsw",
3073                                                    ethsw->sw_attr.id);
3074         if (!ethsw->workqueue) {
3075                 err = -ENOMEM;
3076                 goto err_close;
3077         }
3078
3079         err = dpsw_fdb_remove(ethsw->mc_io, 0, ethsw->dpsw_handle, 0);
3080         if (err)
3081                 goto err_destroy_ordered_workqueue;
3082
3083         err = dpaa2_switch_ctrl_if_setup(ethsw);
3084         if (err)
3085                 goto err_destroy_ordered_workqueue;
3086
3087         return 0;
3088
3089 err_destroy_ordered_workqueue:
3090         destroy_workqueue(ethsw->workqueue);
3091
3092 err_close:
3093         dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle);
3094         return err;
3095 }
3096
3097 /* Add an ACL to redirect frames with specific destination MAC address to
3098  * control interface
3099  */
3100 static int dpaa2_switch_port_trap_mac_addr(struct ethsw_port_priv *port_priv,
3101                                            const char *mac)
3102 {
3103         struct dpaa2_switch_acl_entry acl_entry = {0};
3104
3105         /* Match on the destination MAC address */
3106         ether_addr_copy(acl_entry.key.match.l2_dest_mac, mac);
3107         eth_broadcast_addr(acl_entry.key.mask.l2_dest_mac);
3108
3109         /* Trap to CPU */
3110         acl_entry.cfg.precedence = 0;
3111         acl_entry.cfg.result.action = DPSW_ACL_ACTION_REDIRECT_TO_CTRL_IF;
3112
3113         return dpaa2_switch_acl_entry_add(port_priv->filter_block, &acl_entry);
3114 }
3115
3116 static int dpaa2_switch_port_init(struct ethsw_port_priv *port_priv, u16 port)
3117 {
3118         const char stpa[ETH_ALEN] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x00};
3119         struct switchdev_obj_port_vlan vlan = {
3120                 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
3121                 .vid = DEFAULT_VLAN_ID,
3122                 .flags = BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_PVID,
3123         };
3124         struct net_device *netdev = port_priv->netdev;
3125         struct ethsw_core *ethsw = port_priv->ethsw_data;
3126         struct dpaa2_switch_filter_block *filter_block;
3127         struct dpsw_fdb_cfg fdb_cfg = {0};
3128         struct dpsw_if_attr dpsw_if_attr;
3129         struct dpaa2_switch_fdb *fdb;
3130         struct dpsw_acl_cfg acl_cfg;
3131         u16 fdb_id, acl_tbl_id;
3132         int err;
3133
3134         /* Get the Tx queue for this specific port */
3135         err = dpsw_if_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle,
3136                                      port_priv->idx, &dpsw_if_attr);
3137         if (err) {
3138                 netdev_err(netdev, "dpsw_if_get_attributes err %d\n", err);
3139                 return err;
3140         }
3141         port_priv->tx_qdid = dpsw_if_attr.qdid;
3142
3143         /* Create a FDB table for this particular switch port */
3144         fdb_cfg.num_fdb_entries = ethsw->sw_attr.max_fdb_entries / ethsw->sw_attr.num_ifs;
3145         err = dpsw_fdb_add(ethsw->mc_io, 0, ethsw->dpsw_handle,
3146                            &fdb_id, &fdb_cfg);
3147         if (err) {
3148                 netdev_err(netdev, "dpsw_fdb_add err %d\n", err);
3149                 return err;
3150         }
3151
3152         /* Find an unused dpaa2_switch_fdb structure and use it */
3153         fdb = dpaa2_switch_fdb_get_unused(ethsw);
3154         fdb->fdb_id = fdb_id;
3155         fdb->in_use = true;
3156         fdb->bridge_dev = NULL;
3157         port_priv->fdb = fdb;
3158
3159         /* We need to add VLAN 1 as the PVID on this port until it is under a
3160          * bridge since the DPAA2 switch is not able to handle the traffic in a
3161          * VLAN unaware fashion
3162          */
3163         err = dpaa2_switch_port_vlans_add(netdev, &vlan);
3164         if (err)
3165                 return err;
3166
3167         /* Setup the egress flooding domains (broadcast, unknown unicast */
3168         err = dpaa2_switch_fdb_set_egress_flood(ethsw, port_priv->fdb->fdb_id);
3169         if (err)
3170                 return err;
3171
3172         /* Create an ACL table to be used by this switch port */
3173         acl_cfg.max_entries = DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES;
3174         err = dpsw_acl_add(ethsw->mc_io, 0, ethsw->dpsw_handle,
3175                            &acl_tbl_id, &acl_cfg);
3176         if (err) {
3177                 netdev_err(netdev, "dpsw_acl_add err %d\n", err);
3178                 return err;
3179         }
3180
3181         filter_block = dpaa2_switch_filter_block_get_unused(ethsw);
3182         filter_block->ethsw = ethsw;
3183         filter_block->acl_id = acl_tbl_id;
3184         filter_block->in_use = true;
3185         filter_block->num_acl_rules = 0;
3186         INIT_LIST_HEAD(&filter_block->acl_entries);
3187         INIT_LIST_HEAD(&filter_block->mirror_entries);
3188
3189         err = dpaa2_switch_port_acl_tbl_bind(port_priv, filter_block);
3190         if (err)
3191                 return err;
3192
3193         err = dpaa2_switch_port_trap_mac_addr(port_priv, stpa);
3194         if (err)
3195                 return err;
3196
3197         return err;
3198 }
3199
3200 static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw)
3201 {
3202         dpsw_ctrl_if_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
3203         dpaa2_switch_free_dpio(ethsw);
3204         dpaa2_switch_destroy_rings(ethsw);
3205         dpaa2_switch_drain_bp(ethsw);
3206         dpaa2_switch_free_dpbp(ethsw);
3207 }
3208
3209 static void dpaa2_switch_teardown(struct fsl_mc_device *sw_dev)
3210 {
3211         struct device *dev = &sw_dev->dev;
3212         struct ethsw_core *ethsw = dev_get_drvdata(dev);
3213         int err;
3214
3215         dpaa2_switch_ctrl_if_teardown(ethsw);
3216
3217         destroy_workqueue(ethsw->workqueue);
3218
3219         err = dpsw_close(ethsw->mc_io, 0, ethsw->dpsw_handle);
3220         if (err)
3221                 dev_warn(dev, "dpsw_close err %d\n", err);
3222 }
3223
3224 static void dpaa2_switch_remove(struct fsl_mc_device *sw_dev)
3225 {
3226         struct ethsw_port_priv *port_priv;
3227         struct ethsw_core *ethsw;
3228         struct device *dev;
3229         int i;
3230
3231         dev = &sw_dev->dev;
3232         ethsw = dev_get_drvdata(dev);
3233
3234         dpaa2_switch_teardown_irqs(sw_dev);
3235
3236         dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
3237
3238         for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
3239                 port_priv = ethsw->ports[i];
3240                 unregister_netdev(port_priv->netdev);
3241                 dpaa2_switch_remove_port(ethsw, i);
3242         }
3243
3244         kfree(ethsw->fdbs);
3245         kfree(ethsw->filter_blocks);
3246         kfree(ethsw->ports);
3247
3248         dpaa2_switch_teardown(sw_dev);
3249
3250         fsl_mc_portal_free(ethsw->mc_io);
3251
3252         kfree(ethsw);
3253
3254         dev_set_drvdata(dev, NULL);
3255 }
3256
3257 static int dpaa2_switch_probe_port(struct ethsw_core *ethsw,
3258                                    u16 port_idx)
3259 {
3260         struct ethsw_port_priv *port_priv;
3261         struct device *dev = ethsw->dev;
3262         struct net_device *port_netdev;
3263         int err;
3264
3265         port_netdev = alloc_etherdev(sizeof(struct ethsw_port_priv));
3266         if (!port_netdev) {
3267                 dev_err(dev, "alloc_etherdev error\n");
3268                 return -ENOMEM;
3269         }
3270
3271         port_priv = netdev_priv(port_netdev);
3272         port_priv->netdev = port_netdev;
3273         port_priv->ethsw_data = ethsw;
3274
3275         mutex_init(&port_priv->mac_lock);
3276
3277         port_priv->idx = port_idx;
3278         port_priv->stp_state = BR_STATE_FORWARDING;
3279
3280         SET_NETDEV_DEV(port_netdev, dev);
3281         port_netdev->netdev_ops = &dpaa2_switch_port_ops;
3282         port_netdev->ethtool_ops = &dpaa2_switch_port_ethtool_ops;
3283
3284         port_netdev->needed_headroom = DPAA2_SWITCH_NEEDED_HEADROOM;
3285
3286         port_priv->bcast_flood = true;
3287         port_priv->ucast_flood = true;
3288
3289         /* Set MTU limits */
3290         port_netdev->min_mtu = ETH_MIN_MTU;
3291         port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH;
3292
3293         /* Populate the private port structure so that later calls to
3294          * dpaa2_switch_port_init() can use it.
3295          */
3296         ethsw->ports[port_idx] = port_priv;
3297
3298         /* The DPAA2 switch's ingress path depends on the VLAN table,
3299          * thus we are not able to disable VLAN filtering.
3300          */
3301         port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER |
3302                                 NETIF_F_HW_VLAN_STAG_FILTER |
3303                                 NETIF_F_HW_TC;
3304
3305         err = dpaa2_switch_port_init(port_priv, port_idx);
3306         if (err)
3307                 goto err_port_probe;
3308
3309         err = dpaa2_switch_port_set_mac_addr(port_priv);
3310         if (err)
3311                 goto err_port_probe;
3312
3313         err = dpaa2_switch_port_set_learning(port_priv, false);
3314         if (err)
3315                 goto err_port_probe;
3316         port_priv->learn_ena = false;
3317
3318         err = dpaa2_switch_port_connect_mac(port_priv);
3319         if (err)
3320                 goto err_port_probe;
3321
3322         return 0;
3323
3324 err_port_probe:
3325         free_netdev(port_netdev);
3326         ethsw->ports[port_idx] = NULL;
3327
3328         return err;
3329 }
3330
3331 static int dpaa2_switch_probe(struct fsl_mc_device *sw_dev)
3332 {
3333         struct device *dev = &sw_dev->dev;
3334         struct ethsw_core *ethsw;
3335         int i, err;
3336
3337         /* Allocate switch core*/
3338         ethsw = kzalloc(sizeof(*ethsw), GFP_KERNEL);
3339
3340         if (!ethsw)
3341                 return -ENOMEM;
3342
3343         ethsw->dev = dev;
3344         ethsw->iommu_domain = iommu_get_domain_for_dev(dev);
3345         dev_set_drvdata(dev, ethsw);
3346
3347         err = fsl_mc_portal_allocate(sw_dev, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
3348                                      &ethsw->mc_io);
3349         if (err) {
3350                 if (err == -ENXIO)
3351                         err = -EPROBE_DEFER;
3352                 else
3353                         dev_err(dev, "fsl_mc_portal_allocate err %d\n", err);
3354                 goto err_free_drvdata;
3355         }
3356
3357         err = dpaa2_switch_init(sw_dev);
3358         if (err)
3359                 goto err_free_cmdport;
3360
3361         ethsw->ports = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->ports),
3362                                GFP_KERNEL);
3363         if (!(ethsw->ports)) {
3364                 err = -ENOMEM;
3365                 goto err_teardown;
3366         }
3367
3368         ethsw->fdbs = kcalloc(ethsw->sw_attr.num_ifs, sizeof(*ethsw->fdbs),
3369                               GFP_KERNEL);
3370         if (!ethsw->fdbs) {
3371                 err = -ENOMEM;
3372                 goto err_free_ports;
3373         }
3374
3375         ethsw->filter_blocks = kcalloc(ethsw->sw_attr.num_ifs,
3376                                        sizeof(*ethsw->filter_blocks),
3377                                        GFP_KERNEL);
3378         if (!ethsw->filter_blocks) {
3379                 err = -ENOMEM;
3380                 goto err_free_fdbs;
3381         }
3382
3383         for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
3384                 err = dpaa2_switch_probe_port(ethsw, i);
3385                 if (err)
3386                         goto err_free_netdev;
3387         }
3388
3389         /* Add a NAPI instance for each of the Rx queues. The first port's
3390          * net_device will be associated with the instances since we do not have
3391          * different queues for each switch ports.
3392          */
3393         for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
3394                 netif_napi_add(ethsw->ports[0]->netdev, &ethsw->fq[i].napi,
3395                                dpaa2_switch_poll);
3396
3397         /* Setup IRQs */
3398         err = dpaa2_switch_setup_irqs(sw_dev);
3399         if (err)
3400                 goto err_stop;
3401
3402         /* By convention, if the mirror port is equal to the number of switch
3403          * interfaces, then mirroring of any kind is disabled.
3404          */
3405         ethsw->mirror_port =  ethsw->sw_attr.num_ifs;
3406
3407         /* Register the netdev only when the entire setup is done and the
3408          * switch port interfaces are ready to receive traffic
3409          */
3410         for (i = 0; i < ethsw->sw_attr.num_ifs; i++) {
3411                 err = register_netdev(ethsw->ports[i]->netdev);
3412                 if (err < 0) {
3413                         dev_err(dev, "register_netdev error %d\n", err);
3414                         goto err_unregister_ports;
3415                 }
3416         }
3417
3418         return 0;
3419
3420 err_unregister_ports:
3421         for (i--; i >= 0; i--)
3422                 unregister_netdev(ethsw->ports[i]->netdev);
3423         dpaa2_switch_teardown_irqs(sw_dev);
3424 err_stop:
3425         dpsw_disable(ethsw->mc_io, 0, ethsw->dpsw_handle);
3426 err_free_netdev:
3427         for (i--; i >= 0; i--)
3428                 dpaa2_switch_remove_port(ethsw, i);
3429         kfree(ethsw->filter_blocks);
3430 err_free_fdbs:
3431         kfree(ethsw->fdbs);
3432 err_free_ports:
3433         kfree(ethsw->ports);
3434
3435 err_teardown:
3436         dpaa2_switch_teardown(sw_dev);
3437
3438 err_free_cmdport:
3439         fsl_mc_portal_free(ethsw->mc_io);
3440
3441 err_free_drvdata:
3442         kfree(ethsw);
3443         dev_set_drvdata(dev, NULL);
3444
3445         return err;
3446 }
3447
3448 static const struct fsl_mc_device_id dpaa2_switch_match_id_table[] = {
3449         {
3450                 .vendor = FSL_MC_VENDOR_FREESCALE,
3451                 .obj_type = "dpsw",
3452         },
3453         { .vendor = 0x0 }
3454 };
3455 MODULE_DEVICE_TABLE(fslmc, dpaa2_switch_match_id_table);
3456
3457 static struct fsl_mc_driver dpaa2_switch_drv = {
3458         .driver = {
3459                 .name = KBUILD_MODNAME,
3460         },
3461         .probe = dpaa2_switch_probe,
3462         .remove = dpaa2_switch_remove,
3463         .match_id_table = dpaa2_switch_match_id_table
3464 };
3465
3466 static struct notifier_block dpaa2_switch_port_nb __read_mostly = {
3467         .notifier_call = dpaa2_switch_port_netdevice_event,
3468 };
3469
3470 static struct notifier_block dpaa2_switch_port_switchdev_nb = {
3471         .notifier_call = dpaa2_switch_port_event,
3472 };
3473
3474 static struct notifier_block dpaa2_switch_port_switchdev_blocking_nb = {
3475         .notifier_call = dpaa2_switch_port_blocking_event,
3476 };
3477
3478 static int dpaa2_switch_register_notifiers(void)
3479 {
3480         int err;
3481
3482         err = register_netdevice_notifier(&dpaa2_switch_port_nb);
3483         if (err) {
3484                 pr_err("dpaa2-switch: failed to register net_device notifier (%d)\n", err);
3485                 return err;
3486         }
3487
3488         err = register_switchdev_notifier(&dpaa2_switch_port_switchdev_nb);
3489         if (err) {
3490                 pr_err("dpaa2-switch: failed to register switchdev notifier (%d)\n", err);
3491                 goto err_switchdev_nb;
3492         }
3493
3494         err = register_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb);
3495         if (err) {
3496                 pr_err("dpaa2-switch: failed to register switchdev blocking notifier (%d)\n", err);
3497                 goto err_switchdev_blocking_nb;
3498         }
3499
3500         return 0;
3501
3502 err_switchdev_blocking_nb:
3503         unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb);
3504 err_switchdev_nb:
3505         unregister_netdevice_notifier(&dpaa2_switch_port_nb);
3506
3507         return err;
3508 }
3509
3510 static void dpaa2_switch_unregister_notifiers(void)
3511 {
3512         int err;
3513
3514         err = unregister_switchdev_blocking_notifier(&dpaa2_switch_port_switchdev_blocking_nb);
3515         if (err)
3516                 pr_err("dpaa2-switch: failed to unregister switchdev blocking notifier (%d)\n",
3517                        err);
3518
3519         err = unregister_switchdev_notifier(&dpaa2_switch_port_switchdev_nb);
3520         if (err)
3521                 pr_err("dpaa2-switch: failed to unregister switchdev notifier (%d)\n", err);
3522
3523         err = unregister_netdevice_notifier(&dpaa2_switch_port_nb);
3524         if (err)
3525                 pr_err("dpaa2-switch: failed to unregister net_device notifier (%d)\n", err);
3526 }
3527
3528 static int __init dpaa2_switch_driver_init(void)
3529 {
3530         int err;
3531
3532         err = fsl_mc_driver_register(&dpaa2_switch_drv);
3533         if (err)
3534                 return err;
3535
3536         err = dpaa2_switch_register_notifiers();
3537         if (err) {
3538                 fsl_mc_driver_unregister(&dpaa2_switch_drv);
3539                 return err;
3540         }
3541
3542         return 0;
3543 }
3544
3545 static void __exit dpaa2_switch_driver_exit(void)
3546 {
3547         dpaa2_switch_unregister_notifiers();
3548         fsl_mc_driver_unregister(&dpaa2_switch_drv);
3549 }
3550
3551 module_init(dpaa2_switch_driver_init);
3552 module_exit(dpaa2_switch_driver_exit);
3553
3554 MODULE_LICENSE("GPL v2");
3555 MODULE_DESCRIPTION("DPAA2 Ethernet Switch Driver");