1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 2 /* Microsemi Ocelot Switch driver 3 * 4 * Copyright (c) 2017, 2019 Microsemi Corporation 5 */ 6 7 #include <linux/if_bridge.h> 8 #include "ocelot.h" 9 #include "ocelot_vcap.h" 10 11 int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv, 12 struct flow_cls_offload *f, 13 bool ingress) 14 { 15 struct ocelot *ocelot = priv->port.ocelot; 16 int port = priv->chip_port; 17 18 if (!ingress) 19 return -EOPNOTSUPP; 20 21 switch (f->command) { 22 case FLOW_CLS_REPLACE: 23 return ocelot_cls_flower_replace(ocelot, port, f, ingress); 24 case FLOW_CLS_DESTROY: 25 return ocelot_cls_flower_destroy(ocelot, port, f, ingress); 26 case FLOW_CLS_STATS: 27 return ocelot_cls_flower_stats(ocelot, port, f, ingress); 28 default: 29 return -EOPNOTSUPP; 30 } 31 } 32 33 static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv, 34 struct tc_cls_matchall_offload *f, 35 bool ingress) 36 { 37 struct netlink_ext_ack *extack = f->common.extack; 38 struct ocelot *ocelot = priv->port.ocelot; 39 struct ocelot_policer pol = { 0 }; 40 struct flow_action_entry *action; 41 int port = priv->chip_port; 42 int err; 43 44 if (!ingress) { 45 NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported"); 46 return -EOPNOTSUPP; 47 } 48 49 switch (f->command) { 50 case TC_CLSMATCHALL_REPLACE: 51 if (!flow_offload_has_one_action(&f->rule->action)) { 52 NL_SET_ERR_MSG_MOD(extack, 53 "Only one action is supported"); 54 return -EOPNOTSUPP; 55 } 56 57 if (priv->tc.block_shared) { 58 NL_SET_ERR_MSG_MOD(extack, 59 "Rate limit is not supported on shared blocks"); 60 return -EOPNOTSUPP; 61 } 62 63 action = &f->rule->action.entries[0]; 64 65 if (action->id != FLOW_ACTION_POLICE) { 66 NL_SET_ERR_MSG_MOD(extack, "Unsupported action"); 67 return -EOPNOTSUPP; 68 } 69 70 if (priv->tc.police_id && priv->tc.police_id != f->cookie) { 71 NL_SET_ERR_MSG_MOD(extack, 72 "Only one policer per port is supported"); 73 return -EEXIST; 74 } 75 76 pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8; 77 pol.burst = action->police.burst; 78 79 err = ocelot_port_policer_add(ocelot, port, &pol); 80 if (err) { 81 NL_SET_ERR_MSG_MOD(extack, "Could not add policer"); 82 return err; 83 } 84 85 priv->tc.police_id = f->cookie; 86 priv->tc.offload_cnt++; 87 return 0; 88 case TC_CLSMATCHALL_DESTROY: 89 if (priv->tc.police_id != f->cookie) 90 return -ENOENT; 91 92 err = ocelot_port_policer_del(ocelot, port); 93 if (err) { 94 NL_SET_ERR_MSG_MOD(extack, 95 "Could not delete policer"); 96 return err; 97 } 98 priv->tc.police_id = 0; 99 priv->tc.offload_cnt--; 100 return 0; 101 case TC_CLSMATCHALL_STATS: 102 default: 103 return -EOPNOTSUPP; 104 } 105 } 106 107 static int ocelot_setup_tc_block_cb(enum tc_setup_type type, 108 void *type_data, 109 void *cb_priv, bool ingress) 110 { 111 struct ocelot_port_private *priv = cb_priv; 112 113 if (!tc_cls_can_offload_and_chain0(priv->dev, type_data)) 114 return -EOPNOTSUPP; 115 116 switch (type) { 117 case TC_SETUP_CLSMATCHALL: 118 return ocelot_setup_tc_cls_matchall(priv, type_data, ingress); 119 case TC_SETUP_CLSFLOWER: 120 return ocelot_setup_tc_cls_flower(priv, type_data, ingress); 121 default: 122 return -EOPNOTSUPP; 123 } 124 } 125 126 static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type, 127 void *type_data, 128 void *cb_priv) 129 { 130 return ocelot_setup_tc_block_cb(type, type_data, 131 cb_priv, true); 132 } 133 134 static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type, 135 void *type_data, 136 void *cb_priv) 137 { 138 return ocelot_setup_tc_block_cb(type, type_data, 139 cb_priv, false); 140 } 141 142 static LIST_HEAD(ocelot_block_cb_list); 143 144 static int ocelot_setup_tc_block(struct ocelot_port_private *priv, 145 struct flow_block_offload *f) 146 { 147 struct flow_block_cb *block_cb; 148 flow_setup_cb_t *cb; 149 150 if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) { 151 cb = ocelot_setup_tc_block_cb_ig; 152 priv->tc.block_shared = f->block_shared; 153 } else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) { 154 cb = ocelot_setup_tc_block_cb_eg; 155 } else { 156 return -EOPNOTSUPP; 157 } 158 159 f->driver_block_list = &ocelot_block_cb_list; 160 161 switch (f->command) { 162 case FLOW_BLOCK_BIND: 163 if (flow_block_cb_is_busy(cb, priv, &ocelot_block_cb_list)) 164 return -EBUSY; 165 166 block_cb = flow_block_cb_alloc(cb, priv, priv, NULL); 167 if (IS_ERR(block_cb)) 168 return PTR_ERR(block_cb); 169 170 flow_block_cb_add(block_cb, f); 171 list_add_tail(&block_cb->driver_list, f->driver_block_list); 172 return 0; 173 case FLOW_BLOCK_UNBIND: 174 block_cb = flow_block_cb_lookup(f->block, cb, priv); 175 if (!block_cb) 176 return -ENOENT; 177 178 flow_block_cb_remove(block_cb, f); 179 list_del(&block_cb->driver_list); 180 return 0; 181 default: 182 return -EOPNOTSUPP; 183 } 184 } 185 186 static int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type, 187 void *type_data) 188 { 189 struct ocelot_port_private *priv = netdev_priv(dev); 190 191 switch (type) { 192 case TC_SETUP_BLOCK: 193 return ocelot_setup_tc_block(priv, type_data); 194 default: 195 return -EOPNOTSUPP; 196 } 197 return 0; 198 } 199 200 static void ocelot_port_adjust_link(struct net_device *dev) 201 { 202 struct ocelot_port_private *priv = netdev_priv(dev); 203 struct ocelot *ocelot = priv->port.ocelot; 204 int port = priv->chip_port; 205 206 ocelot_adjust_link(ocelot, port, dev->phydev); 207 } 208 209 static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid, 210 bool untagged) 211 { 212 struct ocelot_port_private *priv = netdev_priv(dev); 213 struct ocelot_port *ocelot_port = &priv->port; 214 struct ocelot *ocelot = ocelot_port->ocelot; 215 int port = priv->chip_port; 216 int ret; 217 218 ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged); 219 if (ret) 220 return ret; 221 222 /* Add the port MAC address to with the right VLAN information */ 223 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid, 224 ENTRYTYPE_LOCKED); 225 226 return 0; 227 } 228 229 static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid) 230 { 231 struct ocelot_port_private *priv = netdev_priv(dev); 232 struct ocelot *ocelot = priv->port.ocelot; 233 int port = priv->chip_port; 234 int ret; 235 236 /* 8021q removes VID 0 on module unload for all interfaces 237 * with VLAN filtering feature. We need to keep it to receive 238 * untagged traffic. 239 */ 240 if (vid == 0) 241 return 0; 242 243 ret = ocelot_vlan_del(ocelot, port, vid); 244 if (ret) 245 return ret; 246 247 /* Del the port MAC address to with the right VLAN information */ 248 ocelot_mact_forget(ocelot, dev->dev_addr, vid); 249 250 return 0; 251 } 252 253 static int ocelot_port_open(struct net_device *dev) 254 { 255 struct ocelot_port_private *priv = netdev_priv(dev); 256 struct ocelot_port *ocelot_port = &priv->port; 257 struct ocelot *ocelot = ocelot_port->ocelot; 258 int port = priv->chip_port; 259 int err; 260 261 if (priv->serdes) { 262 err = phy_set_mode_ext(priv->serdes, PHY_MODE_ETHERNET, 263 ocelot_port->phy_mode); 264 if (err) { 265 netdev_err(dev, "Could not set mode of SerDes\n"); 266 return err; 267 } 268 } 269 270 err = phy_connect_direct(dev, priv->phy, &ocelot_port_adjust_link, 271 ocelot_port->phy_mode); 272 if (err) { 273 netdev_err(dev, "Could not attach to PHY\n"); 274 return err; 275 } 276 277 dev->phydev = priv->phy; 278 279 phy_attached_info(priv->phy); 280 phy_start(priv->phy); 281 282 ocelot_port_enable(ocelot, port, priv->phy); 283 284 return 0; 285 } 286 287 static int ocelot_port_stop(struct net_device *dev) 288 { 289 struct ocelot_port_private *priv = netdev_priv(dev); 290 struct ocelot *ocelot = priv->port.ocelot; 291 int port = priv->chip_port; 292 293 phy_disconnect(priv->phy); 294 295 dev->phydev = NULL; 296 297 ocelot_port_disable(ocelot, port); 298 299 return 0; 300 } 301 302 /* Generate the IFH for frame injection 303 * 304 * The IFH is a 128bit-value 305 * bit 127: bypass the analyzer processing 306 * bit 56-67: destination mask 307 * bit 28-29: pop_cnt: 3 disables all rewriting of the frame 308 * bit 20-27: cpu extraction queue mask 309 * bit 16: tag type 0: C-tag, 1: S-tag 310 * bit 0-11: VID 311 */ 312 static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info) 313 { 314 ifh[0] = IFH_INJ_BYPASS | ((0x1ff & info->rew_op) << 21); 315 ifh[1] = (0xf00 & info->port) >> 8; 316 ifh[2] = (0xff & info->port) << 24; 317 ifh[3] = (info->tag_type << 16) | info->vid; 318 319 return 0; 320 } 321 322 static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev) 323 { 324 struct ocelot_port_private *priv = netdev_priv(dev); 325 struct skb_shared_info *shinfo = skb_shinfo(skb); 326 struct ocelot_port *ocelot_port = &priv->port; 327 struct ocelot *ocelot = ocelot_port->ocelot; 328 u32 val, ifh[OCELOT_TAG_LEN / 4]; 329 struct frame_info info = {}; 330 u8 grp = 0; /* Send everything on CPU group 0 */ 331 unsigned int i, count, last; 332 int port = priv->chip_port; 333 334 val = ocelot_read(ocelot, QS_INJ_STATUS); 335 if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))) || 336 (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp)))) 337 return NETDEV_TX_BUSY; 338 339 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 340 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp); 341 342 info.port = BIT(port); 343 info.tag_type = IFH_TAG_TYPE_C; 344 info.vid = skb_vlan_tag_get(skb); 345 346 /* Check if timestamping is needed */ 347 if (ocelot->ptp && (shinfo->tx_flags & SKBTX_HW_TSTAMP)) { 348 info.rew_op = ocelot_port->ptp_cmd; 349 350 if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) { 351 struct sk_buff *clone; 352 353 clone = skb_clone_sk(skb); 354 if (!clone) { 355 kfree_skb(skb); 356 return NETDEV_TX_OK; 357 } 358 359 ocelot_port_add_txtstamp_skb(ocelot, port, clone); 360 361 info.rew_op |= clone->cb[0] << 3; 362 } 363 } 364 365 if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP) { 366 info.rew_op = ocelot_port->ptp_cmd; 367 if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) 368 info.rew_op |= skb->cb[0] << 3; 369 } 370 371 ocelot_gen_ifh(ifh, &info); 372 373 for (i = 0; i < OCELOT_TAG_LEN / 4; i++) 374 ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]), 375 QS_INJ_WR, grp); 376 377 count = (skb->len + 3) / 4; 378 last = skb->len % 4; 379 for (i = 0; i < count; i++) 380 ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp); 381 382 /* Add padding */ 383 while (i < (OCELOT_BUFFER_CELL_SZ / 4)) { 384 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 385 i++; 386 } 387 388 /* Indicate EOF and valid bytes in last word */ 389 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 390 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) | 391 QS_INJ_CTRL_EOF, 392 QS_INJ_CTRL, grp); 393 394 /* Add dummy CRC */ 395 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 396 skb_tx_timestamp(skb); 397 398 dev->stats.tx_packets++; 399 dev->stats.tx_bytes += skb->len; 400 401 kfree_skb(skb); 402 403 return NETDEV_TX_OK; 404 } 405 406 static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr) 407 { 408 struct ocelot_port_private *priv = netdev_priv(dev); 409 struct ocelot_port *ocelot_port = &priv->port; 410 struct ocelot *ocelot = ocelot_port->ocelot; 411 412 return ocelot_mact_forget(ocelot, addr, ocelot_port->pvid); 413 } 414 415 static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr) 416 { 417 struct ocelot_port_private *priv = netdev_priv(dev); 418 struct ocelot_port *ocelot_port = &priv->port; 419 struct ocelot *ocelot = ocelot_port->ocelot; 420 421 return ocelot_mact_learn(ocelot, PGID_CPU, addr, ocelot_port->pvid, 422 ENTRYTYPE_LOCKED); 423 } 424 425 static void ocelot_set_rx_mode(struct net_device *dev) 426 { 427 struct ocelot_port_private *priv = netdev_priv(dev); 428 struct ocelot *ocelot = priv->port.ocelot; 429 u32 val; 430 int i; 431 432 /* This doesn't handle promiscuous mode because the bridge core is 433 * setting IFF_PROMISC on all slave interfaces and all frames would be 434 * forwarded to the CPU port. 435 */ 436 val = GENMASK(ocelot->num_phys_ports - 1, 0); 437 for_each_nonreserved_multicast_dest_pgid(ocelot, i) 438 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i); 439 440 __dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync); 441 } 442 443 static int ocelot_port_get_phys_port_name(struct net_device *dev, 444 char *buf, size_t len) 445 { 446 struct ocelot_port_private *priv = netdev_priv(dev); 447 int port = priv->chip_port; 448 int ret; 449 450 ret = snprintf(buf, len, "p%d", port); 451 if (ret >= len) 452 return -EINVAL; 453 454 return 0; 455 } 456 457 static int ocelot_port_set_mac_address(struct net_device *dev, void *p) 458 { 459 struct ocelot_port_private *priv = netdev_priv(dev); 460 struct ocelot_port *ocelot_port = &priv->port; 461 struct ocelot *ocelot = ocelot_port->ocelot; 462 const struct sockaddr *addr = p; 463 464 /* Learn the new net device MAC address in the mac table. */ 465 ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data, ocelot_port->pvid, 466 ENTRYTYPE_LOCKED); 467 /* Then forget the previous one. */ 468 ocelot_mact_forget(ocelot, dev->dev_addr, ocelot_port->pvid); 469 470 ether_addr_copy(dev->dev_addr, addr->sa_data); 471 return 0; 472 } 473 474 static void ocelot_get_stats64(struct net_device *dev, 475 struct rtnl_link_stats64 *stats) 476 { 477 struct ocelot_port_private *priv = netdev_priv(dev); 478 struct ocelot *ocelot = priv->port.ocelot; 479 int port = priv->chip_port; 480 481 /* Configure the port to read the stats from */ 482 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port), 483 SYS_STAT_CFG); 484 485 /* Get Rx stats */ 486 stats->rx_bytes = ocelot_read(ocelot, SYS_COUNT_RX_OCTETS); 487 stats->rx_packets = ocelot_read(ocelot, SYS_COUNT_RX_SHORTS) + 488 ocelot_read(ocelot, SYS_COUNT_RX_FRAGMENTS) + 489 ocelot_read(ocelot, SYS_COUNT_RX_JABBERS) + 490 ocelot_read(ocelot, SYS_COUNT_RX_LONGS) + 491 ocelot_read(ocelot, SYS_COUNT_RX_64) + 492 ocelot_read(ocelot, SYS_COUNT_RX_65_127) + 493 ocelot_read(ocelot, SYS_COUNT_RX_128_255) + 494 ocelot_read(ocelot, SYS_COUNT_RX_256_1023) + 495 ocelot_read(ocelot, SYS_COUNT_RX_1024_1526) + 496 ocelot_read(ocelot, SYS_COUNT_RX_1527_MAX); 497 stats->multicast = ocelot_read(ocelot, SYS_COUNT_RX_MULTICAST); 498 stats->rx_dropped = dev->stats.rx_dropped; 499 500 /* Get Tx stats */ 501 stats->tx_bytes = ocelot_read(ocelot, SYS_COUNT_TX_OCTETS); 502 stats->tx_packets = ocelot_read(ocelot, SYS_COUNT_TX_64) + 503 ocelot_read(ocelot, SYS_COUNT_TX_65_127) + 504 ocelot_read(ocelot, SYS_COUNT_TX_128_511) + 505 ocelot_read(ocelot, SYS_COUNT_TX_512_1023) + 506 ocelot_read(ocelot, SYS_COUNT_TX_1024_1526) + 507 ocelot_read(ocelot, SYS_COUNT_TX_1527_MAX); 508 stats->tx_dropped = ocelot_read(ocelot, SYS_COUNT_TX_DROPS) + 509 ocelot_read(ocelot, SYS_COUNT_TX_AGING); 510 stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION); 511 } 512 513 static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 514 struct net_device *dev, 515 const unsigned char *addr, 516 u16 vid, u16 flags, 517 struct netlink_ext_ack *extack) 518 { 519 struct ocelot_port_private *priv = netdev_priv(dev); 520 struct ocelot *ocelot = priv->port.ocelot; 521 int port = priv->chip_port; 522 523 return ocelot_fdb_add(ocelot, port, addr, vid); 524 } 525 526 static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 527 struct net_device *dev, 528 const unsigned char *addr, u16 vid) 529 { 530 struct ocelot_port_private *priv = netdev_priv(dev); 531 struct ocelot *ocelot = priv->port.ocelot; 532 int port = priv->chip_port; 533 534 return ocelot_fdb_del(ocelot, port, addr, vid); 535 } 536 537 static int ocelot_port_fdb_dump(struct sk_buff *skb, 538 struct netlink_callback *cb, 539 struct net_device *dev, 540 struct net_device *filter_dev, int *idx) 541 { 542 struct ocelot_port_private *priv = netdev_priv(dev); 543 struct ocelot *ocelot = priv->port.ocelot; 544 struct ocelot_dump_ctx dump = { 545 .dev = dev, 546 .skb = skb, 547 .cb = cb, 548 .idx = *idx, 549 }; 550 int port = priv->chip_port; 551 int ret; 552 553 ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump); 554 555 *idx = dump.idx; 556 557 return ret; 558 } 559 560 static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto, 561 u16 vid) 562 { 563 return ocelot_vlan_vid_add(dev, vid, false, false); 564 } 565 566 static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, 567 u16 vid) 568 { 569 return ocelot_vlan_vid_del(dev, vid); 570 } 571 572 static void ocelot_vlan_mode(struct ocelot *ocelot, int port, 573 netdev_features_t features) 574 { 575 u32 val; 576 577 /* Filtering */ 578 val = ocelot_read(ocelot, ANA_VLANMASK); 579 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 580 val |= BIT(port); 581 else 582 val &= ~BIT(port); 583 ocelot_write(ocelot, val, ANA_VLANMASK); 584 } 585 586 static int ocelot_set_features(struct net_device *dev, 587 netdev_features_t features) 588 { 589 netdev_features_t changed = dev->features ^ features; 590 struct ocelot_port_private *priv = netdev_priv(dev); 591 struct ocelot *ocelot = priv->port.ocelot; 592 int port = priv->chip_port; 593 594 if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) && 595 priv->tc.offload_cnt) { 596 netdev_err(dev, 597 "Cannot disable HW TC offload while offloads active\n"); 598 return -EBUSY; 599 } 600 601 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) 602 ocelot_vlan_mode(ocelot, port, features); 603 604 return 0; 605 } 606 607 static int ocelot_get_port_parent_id(struct net_device *dev, 608 struct netdev_phys_item_id *ppid) 609 { 610 struct ocelot_port_private *priv = netdev_priv(dev); 611 struct ocelot *ocelot = priv->port.ocelot; 612 613 ppid->id_len = sizeof(ocelot->base_mac); 614 memcpy(&ppid->id, &ocelot->base_mac, ppid->id_len); 615 616 return 0; 617 } 618 619 static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 620 { 621 struct ocelot_port_private *priv = netdev_priv(dev); 622 struct ocelot *ocelot = priv->port.ocelot; 623 int port = priv->chip_port; 624 625 /* If the attached PHY device isn't capable of timestamping operations, 626 * use our own (when possible). 627 */ 628 if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) { 629 switch (cmd) { 630 case SIOCSHWTSTAMP: 631 return ocelot_hwstamp_set(ocelot, port, ifr); 632 case SIOCGHWTSTAMP: 633 return ocelot_hwstamp_get(ocelot, port, ifr); 634 } 635 } 636 637 return phy_mii_ioctl(dev->phydev, ifr, cmd); 638 } 639 640 static const struct net_device_ops ocelot_port_netdev_ops = { 641 .ndo_open = ocelot_port_open, 642 .ndo_stop = ocelot_port_stop, 643 .ndo_start_xmit = ocelot_port_xmit, 644 .ndo_set_rx_mode = ocelot_set_rx_mode, 645 .ndo_get_phys_port_name = ocelot_port_get_phys_port_name, 646 .ndo_set_mac_address = ocelot_port_set_mac_address, 647 .ndo_get_stats64 = ocelot_get_stats64, 648 .ndo_fdb_add = ocelot_port_fdb_add, 649 .ndo_fdb_del = ocelot_port_fdb_del, 650 .ndo_fdb_dump = ocelot_port_fdb_dump, 651 .ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid, 652 .ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid, 653 .ndo_set_features = ocelot_set_features, 654 .ndo_get_port_parent_id = ocelot_get_port_parent_id, 655 .ndo_setup_tc = ocelot_setup_tc, 656 .ndo_do_ioctl = ocelot_ioctl, 657 }; 658 659 struct net_device *ocelot_port_to_netdev(struct ocelot *ocelot, int port) 660 { 661 struct ocelot_port *ocelot_port = ocelot->ports[port]; 662 struct ocelot_port_private *priv; 663 664 if (!ocelot_port) 665 return NULL; 666 667 priv = container_of(ocelot_port, struct ocelot_port_private, port); 668 669 return priv->dev; 670 } 671 672 /* Checks if the net_device instance given to us originates from our driver */ 673 static bool ocelot_netdevice_dev_check(const struct net_device *dev) 674 { 675 return dev->netdev_ops == &ocelot_port_netdev_ops; 676 } 677 678 int ocelot_netdev_to_port(struct net_device *dev) 679 { 680 struct ocelot_port_private *priv; 681 682 if (!dev || !ocelot_netdevice_dev_check(dev)) 683 return -EINVAL; 684 685 priv = netdev_priv(dev); 686 687 return priv->chip_port; 688 } 689 690 static void ocelot_port_get_strings(struct net_device *netdev, u32 sset, 691 u8 *data) 692 { 693 struct ocelot_port_private *priv = netdev_priv(netdev); 694 struct ocelot *ocelot = priv->port.ocelot; 695 int port = priv->chip_port; 696 697 ocelot_get_strings(ocelot, port, sset, data); 698 } 699 700 static void ocelot_port_get_ethtool_stats(struct net_device *dev, 701 struct ethtool_stats *stats, 702 u64 *data) 703 { 704 struct ocelot_port_private *priv = netdev_priv(dev); 705 struct ocelot *ocelot = priv->port.ocelot; 706 int port = priv->chip_port; 707 708 ocelot_get_ethtool_stats(ocelot, port, data); 709 } 710 711 static int ocelot_port_get_sset_count(struct net_device *dev, int sset) 712 { 713 struct ocelot_port_private *priv = netdev_priv(dev); 714 struct ocelot *ocelot = priv->port.ocelot; 715 int port = priv->chip_port; 716 717 return ocelot_get_sset_count(ocelot, port, sset); 718 } 719 720 static int ocelot_port_get_ts_info(struct net_device *dev, 721 struct ethtool_ts_info *info) 722 { 723 struct ocelot_port_private *priv = netdev_priv(dev); 724 struct ocelot *ocelot = priv->port.ocelot; 725 int port = priv->chip_port; 726 727 if (!ocelot->ptp) 728 return ethtool_op_get_ts_info(dev, info); 729 730 return ocelot_get_ts_info(ocelot, port, info); 731 } 732 733 static const struct ethtool_ops ocelot_ethtool_ops = { 734 .get_strings = ocelot_port_get_strings, 735 .get_ethtool_stats = ocelot_port_get_ethtool_stats, 736 .get_sset_count = ocelot_port_get_sset_count, 737 .get_link_ksettings = phy_ethtool_get_link_ksettings, 738 .set_link_ksettings = phy_ethtool_set_link_ksettings, 739 .get_ts_info = ocelot_port_get_ts_info, 740 }; 741 742 static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port, 743 struct switchdev_trans *trans, 744 u8 state) 745 { 746 if (switchdev_trans_ph_prepare(trans)) 747 return; 748 749 ocelot_bridge_stp_state_set(ocelot, port, state); 750 } 751 752 static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port, 753 unsigned long ageing_clock_t) 754 { 755 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t); 756 u32 ageing_time = jiffies_to_msecs(ageing_jiffies); 757 758 ocelot_set_ageing_time(ocelot, ageing_time); 759 } 760 761 static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc) 762 { 763 u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA | 764 ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA | 765 ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA; 766 u32 val = 0; 767 768 if (mc) 769 val = cpu_fwd_mcast; 770 771 ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast, 772 ANA_PORT_CPU_FWD_CFG, port); 773 } 774 775 static int ocelot_port_attr_set(struct net_device *dev, 776 const struct switchdev_attr *attr, 777 struct switchdev_trans *trans) 778 { 779 struct ocelot_port_private *priv = netdev_priv(dev); 780 struct ocelot *ocelot = priv->port.ocelot; 781 int port = priv->chip_port; 782 int err = 0; 783 784 switch (attr->id) { 785 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 786 ocelot_port_attr_stp_state_set(ocelot, port, trans, 787 attr->u.stp_state); 788 break; 789 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: 790 ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time); 791 break; 792 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 793 ocelot_port_vlan_filtering(ocelot, port, 794 attr->u.vlan_filtering, trans); 795 break; 796 case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED: 797 ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled); 798 break; 799 default: 800 err = -EOPNOTSUPP; 801 break; 802 } 803 804 return err; 805 } 806 807 static int ocelot_port_obj_add_vlan(struct net_device *dev, 808 const struct switchdev_obj_port_vlan *vlan, 809 struct switchdev_trans *trans) 810 { 811 int ret; 812 u16 vid; 813 814 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 815 ret = ocelot_vlan_vid_add(dev, vid, 816 vlan->flags & BRIDGE_VLAN_INFO_PVID, 817 vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED); 818 if (ret) 819 return ret; 820 } 821 822 return 0; 823 } 824 825 static int ocelot_port_vlan_del_vlan(struct net_device *dev, 826 const struct switchdev_obj_port_vlan *vlan) 827 { 828 int ret; 829 u16 vid; 830 831 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 832 ret = ocelot_vlan_vid_del(dev, vid); 833 834 if (ret) 835 return ret; 836 } 837 838 return 0; 839 } 840 841 static int ocelot_port_obj_add_mdb(struct net_device *dev, 842 const struct switchdev_obj_port_mdb *mdb, 843 struct switchdev_trans *trans) 844 { 845 struct ocelot_port_private *priv = netdev_priv(dev); 846 struct ocelot_port *ocelot_port = &priv->port; 847 struct ocelot *ocelot = ocelot_port->ocelot; 848 int port = priv->chip_port; 849 850 if (switchdev_trans_ph_prepare(trans)) 851 return 0; 852 853 return ocelot_port_mdb_add(ocelot, port, mdb); 854 } 855 856 static int ocelot_port_obj_del_mdb(struct net_device *dev, 857 const struct switchdev_obj_port_mdb *mdb) 858 { 859 struct ocelot_port_private *priv = netdev_priv(dev); 860 struct ocelot_port *ocelot_port = &priv->port; 861 struct ocelot *ocelot = ocelot_port->ocelot; 862 int port = priv->chip_port; 863 864 return ocelot_port_mdb_del(ocelot, port, mdb); 865 } 866 867 static int ocelot_port_obj_add(struct net_device *dev, 868 const struct switchdev_obj *obj, 869 struct switchdev_trans *trans, 870 struct netlink_ext_ack *extack) 871 { 872 int ret = 0; 873 874 switch (obj->id) { 875 case SWITCHDEV_OBJ_ID_PORT_VLAN: 876 ret = ocelot_port_obj_add_vlan(dev, 877 SWITCHDEV_OBJ_PORT_VLAN(obj), 878 trans); 879 break; 880 case SWITCHDEV_OBJ_ID_PORT_MDB: 881 ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj), 882 trans); 883 break; 884 default: 885 return -EOPNOTSUPP; 886 } 887 888 return ret; 889 } 890 891 static int ocelot_port_obj_del(struct net_device *dev, 892 const struct switchdev_obj *obj) 893 { 894 int ret = 0; 895 896 switch (obj->id) { 897 case SWITCHDEV_OBJ_ID_PORT_VLAN: 898 ret = ocelot_port_vlan_del_vlan(dev, 899 SWITCHDEV_OBJ_PORT_VLAN(obj)); 900 break; 901 case SWITCHDEV_OBJ_ID_PORT_MDB: 902 ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj)); 903 break; 904 default: 905 return -EOPNOTSUPP; 906 } 907 908 return ret; 909 } 910 911 static int ocelot_netdevice_port_event(struct net_device *dev, 912 unsigned long event, 913 struct netdev_notifier_changeupper_info *info) 914 { 915 struct ocelot_port_private *priv = netdev_priv(dev); 916 struct ocelot_port *ocelot_port = &priv->port; 917 struct ocelot *ocelot = ocelot_port->ocelot; 918 int port = priv->chip_port; 919 int err = 0; 920 921 switch (event) { 922 case NETDEV_CHANGEUPPER: 923 if (netif_is_bridge_master(info->upper_dev)) { 924 if (info->linking) { 925 err = ocelot_port_bridge_join(ocelot, port, 926 info->upper_dev); 927 } else { 928 err = ocelot_port_bridge_leave(ocelot, port, 929 info->upper_dev); 930 } 931 } 932 if (netif_is_lag_master(info->upper_dev)) { 933 if (info->linking) 934 err = ocelot_port_lag_join(ocelot, port, 935 info->upper_dev); 936 else 937 ocelot_port_lag_leave(ocelot, port, 938 info->upper_dev); 939 } 940 break; 941 default: 942 break; 943 } 944 945 return err; 946 } 947 948 static int ocelot_netdevice_event(struct notifier_block *unused, 949 unsigned long event, void *ptr) 950 { 951 struct netdev_notifier_changeupper_info *info = ptr; 952 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 953 int ret = 0; 954 955 if (!ocelot_netdevice_dev_check(dev)) 956 return 0; 957 958 if (event == NETDEV_PRECHANGEUPPER && 959 netif_is_lag_master(info->upper_dev)) { 960 struct netdev_lag_upper_info *lag_upper_info = info->upper_info; 961 struct netlink_ext_ack *extack; 962 963 if (lag_upper_info && 964 lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) { 965 extack = netdev_notifier_info_to_extack(&info->info); 966 NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type"); 967 968 ret = -EINVAL; 969 goto notify; 970 } 971 } 972 973 if (netif_is_lag_master(dev)) { 974 struct net_device *slave; 975 struct list_head *iter; 976 977 netdev_for_each_lower_dev(dev, slave, iter) { 978 ret = ocelot_netdevice_port_event(slave, event, info); 979 if (ret) 980 goto notify; 981 } 982 } else { 983 ret = ocelot_netdevice_port_event(dev, event, info); 984 } 985 986 notify: 987 return notifier_from_errno(ret); 988 } 989 990 struct notifier_block ocelot_netdevice_nb __read_mostly = { 991 .notifier_call = ocelot_netdevice_event, 992 }; 993 994 static int ocelot_switchdev_event(struct notifier_block *unused, 995 unsigned long event, void *ptr) 996 { 997 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 998 int err; 999 1000 switch (event) { 1001 case SWITCHDEV_PORT_ATTR_SET: 1002 err = switchdev_handle_port_attr_set(dev, ptr, 1003 ocelot_netdevice_dev_check, 1004 ocelot_port_attr_set); 1005 return notifier_from_errno(err); 1006 } 1007 1008 return NOTIFY_DONE; 1009 } 1010 1011 struct notifier_block ocelot_switchdev_nb __read_mostly = { 1012 .notifier_call = ocelot_switchdev_event, 1013 }; 1014 1015 static int ocelot_switchdev_blocking_event(struct notifier_block *unused, 1016 unsigned long event, void *ptr) 1017 { 1018 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 1019 int err; 1020 1021 switch (event) { 1022 /* Blocking events. */ 1023 case SWITCHDEV_PORT_OBJ_ADD: 1024 err = switchdev_handle_port_obj_add(dev, ptr, 1025 ocelot_netdevice_dev_check, 1026 ocelot_port_obj_add); 1027 return notifier_from_errno(err); 1028 case SWITCHDEV_PORT_OBJ_DEL: 1029 err = switchdev_handle_port_obj_del(dev, ptr, 1030 ocelot_netdevice_dev_check, 1031 ocelot_port_obj_del); 1032 return notifier_from_errno(err); 1033 case SWITCHDEV_PORT_ATTR_SET: 1034 err = switchdev_handle_port_attr_set(dev, ptr, 1035 ocelot_netdevice_dev_check, 1036 ocelot_port_attr_set); 1037 return notifier_from_errno(err); 1038 } 1039 1040 return NOTIFY_DONE; 1041 } 1042 1043 struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = { 1044 .notifier_call = ocelot_switchdev_blocking_event, 1045 }; 1046 1047 int ocelot_probe_port(struct ocelot *ocelot, int port, struct regmap *target, 1048 struct phy_device *phy) 1049 { 1050 struct ocelot_port_private *priv; 1051 struct ocelot_port *ocelot_port; 1052 struct net_device *dev; 1053 int err; 1054 1055 dev = alloc_etherdev(sizeof(struct ocelot_port_private)); 1056 if (!dev) 1057 return -ENOMEM; 1058 SET_NETDEV_DEV(dev, ocelot->dev); 1059 priv = netdev_priv(dev); 1060 priv->dev = dev; 1061 priv->phy = phy; 1062 priv->chip_port = port; 1063 ocelot_port = &priv->port; 1064 ocelot_port->ocelot = ocelot; 1065 ocelot_port->target = target; 1066 ocelot->ports[port] = ocelot_port; 1067 1068 dev->netdev_ops = &ocelot_port_netdev_ops; 1069 dev->ethtool_ops = &ocelot_ethtool_ops; 1070 1071 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS | 1072 NETIF_F_HW_TC; 1073 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC; 1074 1075 memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN); 1076 dev->dev_addr[ETH_ALEN - 1] += port; 1077 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid, 1078 ENTRYTYPE_LOCKED); 1079 1080 ocelot_init_port(ocelot, port); 1081 1082 err = register_netdev(dev); 1083 if (err) { 1084 dev_err(ocelot->dev, "register_netdev failed\n"); 1085 free_netdev(dev); 1086 } 1087 1088 return err; 1089 } 1090