1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright 2019 NXP Semiconductors 3 */ 4 #include <uapi/linux/if_bridge.h> 5 #include <soc/mscc/ocelot_vcap.h> 6 #include <soc/mscc/ocelot_qsys.h> 7 #include <soc/mscc/ocelot_sys.h> 8 #include <soc/mscc/ocelot_dev.h> 9 #include <soc/mscc/ocelot_ana.h> 10 #include <soc/mscc/ocelot_ptp.h> 11 #include <soc/mscc/ocelot.h> 12 #include <linux/packing.h> 13 #include <linux/module.h> 14 #include <linux/of_net.h> 15 #include <linux/pci.h> 16 #include <linux/of.h> 17 #include <net/pkt_sched.h> 18 #include <net/dsa.h> 19 #include "felix.h" 20 21 static enum dsa_tag_protocol felix_get_tag_protocol(struct dsa_switch *ds, 22 int port, 23 enum dsa_tag_protocol mp) 24 { 25 return DSA_TAG_PROTO_OCELOT; 26 } 27 28 static int felix_set_ageing_time(struct dsa_switch *ds, 29 unsigned int ageing_time) 30 { 31 struct ocelot *ocelot = ds->priv; 32 33 ocelot_set_ageing_time(ocelot, ageing_time); 34 35 return 0; 36 } 37 38 static int felix_fdb_dump(struct dsa_switch *ds, int port, 39 dsa_fdb_dump_cb_t *cb, void *data) 40 { 41 struct ocelot *ocelot = ds->priv; 42 43 return ocelot_fdb_dump(ocelot, port, cb, data); 44 } 45 46 static int felix_fdb_add(struct dsa_switch *ds, int port, 47 const unsigned char *addr, u16 vid) 48 { 49 struct ocelot *ocelot = ds->priv; 50 51 return ocelot_fdb_add(ocelot, port, addr, vid); 52 } 53 54 static int felix_fdb_del(struct dsa_switch *ds, int port, 55 const unsigned char *addr, u16 vid) 56 { 57 struct ocelot *ocelot = ds->priv; 58 59 return ocelot_fdb_del(ocelot, port, addr, vid); 60 } 61 62 static void felix_bridge_stp_state_set(struct dsa_switch *ds, int port, 63 u8 state) 64 { 65 struct ocelot *ocelot = ds->priv; 66 67 return ocelot_bridge_stp_state_set(ocelot, port, state); 68 } 69 70 static int felix_bridge_join(struct dsa_switch *ds, int port, 71 struct net_device *br) 72 { 73 struct ocelot *ocelot = ds->priv; 74 75 return ocelot_port_bridge_join(ocelot, port, br); 76 } 77 78 static void felix_bridge_leave(struct dsa_switch *ds, int port, 79 struct net_device *br) 80 { 81 struct ocelot *ocelot = ds->priv; 82 83 ocelot_port_bridge_leave(ocelot, port, br); 84 } 85 86 /* This callback needs to be present */ 87 static int felix_vlan_prepare(struct dsa_switch *ds, int port, 88 const struct switchdev_obj_port_vlan *vlan) 89 { 90 return 0; 91 } 92 93 static int felix_vlan_filtering(struct dsa_switch *ds, int port, bool enabled) 94 { 95 struct ocelot *ocelot = ds->priv; 96 97 ocelot_port_vlan_filtering(ocelot, port, enabled); 98 99 return 0; 100 } 101 102 static void felix_vlan_add(struct dsa_switch *ds, int port, 103 const struct switchdev_obj_port_vlan *vlan) 104 { 105 struct ocelot *ocelot = ds->priv; 106 u16 vid; 107 int err; 108 109 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 110 err = ocelot_vlan_add(ocelot, port, vid, 111 vlan->flags & BRIDGE_VLAN_INFO_PVID, 112 vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED); 113 if (err) { 114 dev_err(ds->dev, "Failed to add VLAN %d to port %d: %d\n", 115 vid, port, err); 116 return; 117 } 118 } 119 } 120 121 static int felix_vlan_del(struct dsa_switch *ds, int port, 122 const struct switchdev_obj_port_vlan *vlan) 123 { 124 struct ocelot *ocelot = ds->priv; 125 u16 vid; 126 int err; 127 128 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 129 err = ocelot_vlan_del(ocelot, port, vid); 130 if (err) { 131 dev_err(ds->dev, "Failed to remove VLAN %d from port %d: %d\n", 132 vid, port, err); 133 return err; 134 } 135 } 136 return 0; 137 } 138 139 static int felix_port_enable(struct dsa_switch *ds, int port, 140 struct phy_device *phy) 141 { 142 struct ocelot *ocelot = ds->priv; 143 144 ocelot_port_enable(ocelot, port, phy); 145 146 return 0; 147 } 148 149 static void felix_port_disable(struct dsa_switch *ds, int port) 150 { 151 struct ocelot *ocelot = ds->priv; 152 153 return ocelot_port_disable(ocelot, port); 154 } 155 156 static void felix_phylink_validate(struct dsa_switch *ds, int port, 157 unsigned long *supported, 158 struct phylink_link_state *state) 159 { 160 struct ocelot *ocelot = ds->priv; 161 struct ocelot_port *ocelot_port = ocelot->ports[port]; 162 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; 163 164 if (state->interface != PHY_INTERFACE_MODE_NA && 165 state->interface != ocelot_port->phy_mode) { 166 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS); 167 return; 168 } 169 170 /* No half-duplex. */ 171 phylink_set_port_modes(mask); 172 phylink_set(mask, Autoneg); 173 phylink_set(mask, Pause); 174 phylink_set(mask, Asym_Pause); 175 phylink_set(mask, 10baseT_Full); 176 phylink_set(mask, 100baseT_Full); 177 phylink_set(mask, 1000baseT_Full); 178 179 if (state->interface == PHY_INTERFACE_MODE_INTERNAL || 180 state->interface == PHY_INTERFACE_MODE_2500BASEX || 181 state->interface == PHY_INTERFACE_MODE_USXGMII) { 182 phylink_set(mask, 2500baseT_Full); 183 phylink_set(mask, 2500baseX_Full); 184 } 185 186 bitmap_and(supported, supported, mask, 187 __ETHTOOL_LINK_MODE_MASK_NBITS); 188 bitmap_and(state->advertising, state->advertising, mask, 189 __ETHTOOL_LINK_MODE_MASK_NBITS); 190 } 191 192 static int felix_phylink_mac_pcs_get_state(struct dsa_switch *ds, int port, 193 struct phylink_link_state *state) 194 { 195 struct ocelot *ocelot = ds->priv; 196 struct felix *felix = ocelot_to_felix(ocelot); 197 198 if (felix->info->pcs_link_state) 199 felix->info->pcs_link_state(ocelot, port, state); 200 201 return 0; 202 } 203 204 static void felix_phylink_mac_config(struct dsa_switch *ds, int port, 205 unsigned int link_an_mode, 206 const struct phylink_link_state *state) 207 { 208 struct ocelot *ocelot = ds->priv; 209 struct ocelot_port *ocelot_port = ocelot->ports[port]; 210 struct felix *felix = ocelot_to_felix(ocelot); 211 u32 mac_fc_cfg; 212 213 /* Take port out of reset by clearing the MAC_TX_RST, MAC_RX_RST and 214 * PORT_RST bits in CLOCK_CFG 215 */ 216 ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(state->speed), 217 DEV_CLOCK_CFG); 218 219 /* Flow control. Link speed is only used here to evaluate the time 220 * specification in incoming pause frames. 221 */ 222 mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(state->speed); 223 224 /* handle Rx pause in all cases, with 2500base-X this is used for rate 225 * adaptation. 226 */ 227 mac_fc_cfg |= SYS_MAC_FC_CFG_RX_FC_ENA; 228 229 if (state->pause & MLO_PAUSE_TX) 230 mac_fc_cfg |= SYS_MAC_FC_CFG_TX_FC_ENA | 231 SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) | 232 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) | 233 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA; 234 ocelot_write_rix(ocelot, mac_fc_cfg, SYS_MAC_FC_CFG, port); 235 236 ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port); 237 238 if (felix->info->pcs_init) 239 felix->info->pcs_init(ocelot, port, link_an_mode, state); 240 } 241 242 static void felix_phylink_mac_an_restart(struct dsa_switch *ds, int port) 243 { 244 struct ocelot *ocelot = ds->priv; 245 struct felix *felix = ocelot_to_felix(ocelot); 246 247 if (felix->info->pcs_an_restart) 248 felix->info->pcs_an_restart(ocelot, port); 249 } 250 251 static void felix_phylink_mac_link_down(struct dsa_switch *ds, int port, 252 unsigned int link_an_mode, 253 phy_interface_t interface) 254 { 255 struct ocelot *ocelot = ds->priv; 256 struct ocelot_port *ocelot_port = ocelot->ports[port]; 257 258 ocelot_port_writel(ocelot_port, 0, DEV_MAC_ENA_CFG); 259 ocelot_rmw_rix(ocelot, 0, QSYS_SWITCH_PORT_MODE_PORT_ENA, 260 QSYS_SWITCH_PORT_MODE, port); 261 } 262 263 static void felix_phylink_mac_link_up(struct dsa_switch *ds, int port, 264 unsigned int link_an_mode, 265 phy_interface_t interface, 266 struct phy_device *phydev, 267 int speed, int duplex, 268 bool tx_pause, bool rx_pause) 269 { 270 struct ocelot *ocelot = ds->priv; 271 struct ocelot_port *ocelot_port = ocelot->ports[port]; 272 273 /* Enable MAC module */ 274 ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA | 275 DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG); 276 277 /* Enable receiving frames on the port, and activate auto-learning of 278 * MAC addresses. 279 */ 280 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO | 281 ANA_PORT_PORT_CFG_RECV_ENA | 282 ANA_PORT_PORT_CFG_PORTID_VAL(port), 283 ANA_PORT_PORT_CFG, port); 284 285 /* Core: Enable port for frame transfer */ 286 ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE | 287 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) | 288 QSYS_SWITCH_PORT_MODE_PORT_ENA, 289 QSYS_SWITCH_PORT_MODE, port); 290 } 291 292 static void felix_get_strings(struct dsa_switch *ds, int port, 293 u32 stringset, u8 *data) 294 { 295 struct ocelot *ocelot = ds->priv; 296 297 return ocelot_get_strings(ocelot, port, stringset, data); 298 } 299 300 static void felix_get_ethtool_stats(struct dsa_switch *ds, int port, u64 *data) 301 { 302 struct ocelot *ocelot = ds->priv; 303 304 ocelot_get_ethtool_stats(ocelot, port, data); 305 } 306 307 static int felix_get_sset_count(struct dsa_switch *ds, int port, int sset) 308 { 309 struct ocelot *ocelot = ds->priv; 310 311 return ocelot_get_sset_count(ocelot, port, sset); 312 } 313 314 static int felix_get_ts_info(struct dsa_switch *ds, int port, 315 struct ethtool_ts_info *info) 316 { 317 struct ocelot *ocelot = ds->priv; 318 319 return ocelot_get_ts_info(ocelot, port, info); 320 } 321 322 static int felix_parse_ports_node(struct felix *felix, 323 struct device_node *ports_node, 324 phy_interface_t *port_phy_modes) 325 { 326 struct ocelot *ocelot = &felix->ocelot; 327 struct device *dev = felix->ocelot.dev; 328 struct device_node *child; 329 330 for_each_available_child_of_node(ports_node, child) { 331 phy_interface_t phy_mode; 332 u32 port; 333 int err; 334 335 /* Get switch port number from DT */ 336 if (of_property_read_u32(child, "reg", &port) < 0) { 337 dev_err(dev, "Port number not defined in device tree " 338 "(property \"reg\")\n"); 339 of_node_put(child); 340 return -ENODEV; 341 } 342 343 /* Get PHY mode from DT */ 344 err = of_get_phy_mode(child, &phy_mode); 345 if (err) { 346 dev_err(dev, "Failed to read phy-mode or " 347 "phy-interface-type property for port %d\n", 348 port); 349 of_node_put(child); 350 return -ENODEV; 351 } 352 353 err = felix->info->prevalidate_phy_mode(ocelot, port, phy_mode); 354 if (err < 0) { 355 dev_err(dev, "Unsupported PHY mode %s on port %d\n", 356 phy_modes(phy_mode), port); 357 return err; 358 } 359 360 port_phy_modes[port] = phy_mode; 361 } 362 363 return 0; 364 } 365 366 static int felix_parse_dt(struct felix *felix, phy_interface_t *port_phy_modes) 367 { 368 struct device *dev = felix->ocelot.dev; 369 struct device_node *switch_node; 370 struct device_node *ports_node; 371 int err; 372 373 switch_node = dev->of_node; 374 375 ports_node = of_get_child_by_name(switch_node, "ports"); 376 if (!ports_node) { 377 dev_err(dev, "Incorrect bindings: absent \"ports\" node\n"); 378 return -ENODEV; 379 } 380 381 err = felix_parse_ports_node(felix, ports_node, port_phy_modes); 382 of_node_put(ports_node); 383 384 return err; 385 } 386 387 static int felix_init_structs(struct felix *felix, int num_phys_ports) 388 { 389 struct ocelot *ocelot = &felix->ocelot; 390 phy_interface_t *port_phy_modes; 391 resource_size_t switch_base; 392 int port, i, err; 393 394 ocelot->num_phys_ports = num_phys_ports; 395 ocelot->ports = devm_kcalloc(ocelot->dev, num_phys_ports, 396 sizeof(struct ocelot_port *), GFP_KERNEL); 397 if (!ocelot->ports) 398 return -ENOMEM; 399 400 ocelot->map = felix->info->map; 401 ocelot->stats_layout = felix->info->stats_layout; 402 ocelot->num_stats = felix->info->num_stats; 403 ocelot->shared_queue_sz = felix->info->shared_queue_sz; 404 ocelot->vcap_is2_keys = felix->info->vcap_is2_keys; 405 ocelot->vcap_is2_actions= felix->info->vcap_is2_actions; 406 ocelot->vcap = felix->info->vcap; 407 ocelot->ops = felix->info->ops; 408 409 port_phy_modes = kcalloc(num_phys_ports, sizeof(phy_interface_t), 410 GFP_KERNEL); 411 if (!port_phy_modes) 412 return -ENOMEM; 413 414 err = felix_parse_dt(felix, port_phy_modes); 415 if (err) { 416 kfree(port_phy_modes); 417 return err; 418 } 419 420 switch_base = pci_resource_start(felix->pdev, 421 felix->info->switch_pci_bar); 422 423 for (i = 0; i < TARGET_MAX; i++) { 424 struct regmap *target; 425 struct resource *res; 426 427 if (!felix->info->target_io_res[i].name) 428 continue; 429 430 res = &felix->info->target_io_res[i]; 431 res->flags = IORESOURCE_MEM; 432 res->start += switch_base; 433 res->end += switch_base; 434 435 target = ocelot_regmap_init(ocelot, res); 436 if (IS_ERR(target)) { 437 dev_err(ocelot->dev, 438 "Failed to map device memory space\n"); 439 kfree(port_phy_modes); 440 return PTR_ERR(target); 441 } 442 443 ocelot->targets[i] = target; 444 } 445 446 err = ocelot_regfields_init(ocelot, felix->info->regfields); 447 if (err) { 448 dev_err(ocelot->dev, "failed to init reg fields map\n"); 449 kfree(port_phy_modes); 450 return err; 451 } 452 453 for (port = 0; port < num_phys_ports; port++) { 454 struct ocelot_port *ocelot_port; 455 void __iomem *port_regs; 456 struct resource *res; 457 458 ocelot_port = devm_kzalloc(ocelot->dev, 459 sizeof(struct ocelot_port), 460 GFP_KERNEL); 461 if (!ocelot_port) { 462 dev_err(ocelot->dev, 463 "failed to allocate port memory\n"); 464 kfree(port_phy_modes); 465 return -ENOMEM; 466 } 467 468 res = &felix->info->port_io_res[port]; 469 res->flags = IORESOURCE_MEM; 470 res->start += switch_base; 471 res->end += switch_base; 472 473 port_regs = devm_ioremap_resource(ocelot->dev, res); 474 if (IS_ERR(port_regs)) { 475 dev_err(ocelot->dev, 476 "failed to map registers for port %d\n", port); 477 kfree(port_phy_modes); 478 return PTR_ERR(port_regs); 479 } 480 481 ocelot_port->phy_mode = port_phy_modes[port]; 482 ocelot_port->ocelot = ocelot; 483 ocelot_port->regs = port_regs; 484 ocelot->ports[port] = ocelot_port; 485 } 486 487 kfree(port_phy_modes); 488 489 if (felix->info->mdio_bus_alloc) { 490 err = felix->info->mdio_bus_alloc(ocelot); 491 if (err < 0) 492 return err; 493 } 494 495 return 0; 496 } 497 498 static struct ptp_clock_info ocelot_ptp_clock_info = { 499 .owner = THIS_MODULE, 500 .name = "felix ptp", 501 .max_adj = 0x7fffffff, 502 .n_alarm = 0, 503 .n_ext_ts = 0, 504 .n_per_out = OCELOT_PTP_PINS_NUM, 505 .n_pins = OCELOT_PTP_PINS_NUM, 506 .pps = 0, 507 .gettime64 = ocelot_ptp_gettime64, 508 .settime64 = ocelot_ptp_settime64, 509 .adjtime = ocelot_ptp_adjtime, 510 .adjfine = ocelot_ptp_adjfine, 511 .verify = ocelot_ptp_verify, 512 .enable = ocelot_ptp_enable, 513 }; 514 515 /* Hardware initialization done here so that we can allocate structures with 516 * devm without fear of dsa_register_switch returning -EPROBE_DEFER and causing 517 * us to allocate structures twice (leak memory) and map PCI memory twice 518 * (which will not work). 519 */ 520 static int felix_setup(struct dsa_switch *ds) 521 { 522 struct ocelot *ocelot = ds->priv; 523 struct felix *felix = ocelot_to_felix(ocelot); 524 int port, err; 525 int tc; 526 527 err = felix_init_structs(felix, ds->num_ports); 528 if (err) 529 return err; 530 531 ocelot_init(ocelot); 532 if (ocelot->ptp) { 533 err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info); 534 if (err) { 535 dev_err(ocelot->dev, 536 "Timestamp initialization failed\n"); 537 ocelot->ptp = 0; 538 } 539 } 540 541 for (port = 0; port < ds->num_ports; port++) { 542 ocelot_init_port(ocelot, port); 543 544 /* Bring up the CPU port module and configure the NPI port */ 545 if (dsa_is_cpu_port(ds, port)) 546 ocelot_configure_cpu(ocelot, port, 547 OCELOT_TAG_PREFIX_NONE, 548 OCELOT_TAG_PREFIX_LONG); 549 } 550 551 /* Include the CPU port module in the forwarding mask for unknown 552 * unicast - the hardware default value for ANA_FLOODING_FLD_UNICAST 553 * excludes BIT(ocelot->num_phys_ports), and so does ocelot_init, since 554 * Ocelot relies on whitelisting MAC addresses towards PGID_CPU. 555 */ 556 ocelot_write_rix(ocelot, 557 ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)), 558 ANA_PGID_PGID, PGID_UC); 559 /* Setup the per-traffic class flooding PGIDs */ 560 for (tc = 0; tc < FELIX_NUM_TC; tc++) 561 ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) | 562 ANA_FLOODING_FLD_BROADCAST(PGID_MC) | 563 ANA_FLOODING_FLD_UNICAST(PGID_UC), 564 ANA_FLOODING, tc); 565 566 ds->mtu_enforcement_ingress = true; 567 /* It looks like the MAC/PCS interrupt register - PM0_IEVENT (0x8040) 568 * isn't instantiated for the Felix PF. 569 * In-band AN may take a few ms to complete, so we need to poll. 570 */ 571 ds->pcs_poll = true; 572 573 return 0; 574 } 575 576 static void felix_teardown(struct dsa_switch *ds) 577 { 578 struct ocelot *ocelot = ds->priv; 579 struct felix *felix = ocelot_to_felix(ocelot); 580 581 if (felix->info->mdio_bus_free) 582 felix->info->mdio_bus_free(ocelot); 583 584 ocelot_deinit_timestamp(ocelot); 585 /* stop workqueue thread */ 586 ocelot_deinit(ocelot); 587 } 588 589 static int felix_hwtstamp_get(struct dsa_switch *ds, int port, 590 struct ifreq *ifr) 591 { 592 struct ocelot *ocelot = ds->priv; 593 594 return ocelot_hwstamp_get(ocelot, port, ifr); 595 } 596 597 static int felix_hwtstamp_set(struct dsa_switch *ds, int port, 598 struct ifreq *ifr) 599 { 600 struct ocelot *ocelot = ds->priv; 601 602 return ocelot_hwstamp_set(ocelot, port, ifr); 603 } 604 605 static bool felix_rxtstamp(struct dsa_switch *ds, int port, 606 struct sk_buff *skb, unsigned int type) 607 { 608 struct skb_shared_hwtstamps *shhwtstamps; 609 struct ocelot *ocelot = ds->priv; 610 u8 *extraction = skb->data - ETH_HLEN - OCELOT_TAG_LEN; 611 u32 tstamp_lo, tstamp_hi; 612 struct timespec64 ts; 613 u64 tstamp, val; 614 615 ocelot_ptp_gettime64(&ocelot->ptp_info, &ts); 616 tstamp = ktime_set(ts.tv_sec, ts.tv_nsec); 617 618 packing(extraction, &val, 116, 85, OCELOT_TAG_LEN, UNPACK, 0); 619 tstamp_lo = (u32)val; 620 621 tstamp_hi = tstamp >> 32; 622 if ((tstamp & 0xffffffff) < tstamp_lo) 623 tstamp_hi--; 624 625 tstamp = ((u64)tstamp_hi << 32) | tstamp_lo; 626 627 shhwtstamps = skb_hwtstamps(skb); 628 memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps)); 629 shhwtstamps->hwtstamp = tstamp; 630 return false; 631 } 632 633 static bool felix_txtstamp(struct dsa_switch *ds, int port, 634 struct sk_buff *clone, unsigned int type) 635 { 636 struct ocelot *ocelot = ds->priv; 637 struct ocelot_port *ocelot_port = ocelot->ports[port]; 638 639 if (!ocelot_port_add_txtstamp_skb(ocelot_port, clone)) 640 return true; 641 642 return false; 643 } 644 645 static int felix_change_mtu(struct dsa_switch *ds, int port, int new_mtu) 646 { 647 struct ocelot *ocelot = ds->priv; 648 649 ocelot_port_set_maxlen(ocelot, port, new_mtu); 650 651 return 0; 652 } 653 654 static int felix_get_max_mtu(struct dsa_switch *ds, int port) 655 { 656 struct ocelot *ocelot = ds->priv; 657 658 return ocelot_get_max_mtu(ocelot, port); 659 } 660 661 static int felix_cls_flower_add(struct dsa_switch *ds, int port, 662 struct flow_cls_offload *cls, bool ingress) 663 { 664 struct ocelot *ocelot = ds->priv; 665 666 return ocelot_cls_flower_replace(ocelot, port, cls, ingress); 667 } 668 669 static int felix_cls_flower_del(struct dsa_switch *ds, int port, 670 struct flow_cls_offload *cls, bool ingress) 671 { 672 struct ocelot *ocelot = ds->priv; 673 674 return ocelot_cls_flower_destroy(ocelot, port, cls, ingress); 675 } 676 677 static int felix_cls_flower_stats(struct dsa_switch *ds, int port, 678 struct flow_cls_offload *cls, bool ingress) 679 { 680 struct ocelot *ocelot = ds->priv; 681 682 return ocelot_cls_flower_stats(ocelot, port, cls, ingress); 683 } 684 685 static int felix_port_policer_add(struct dsa_switch *ds, int port, 686 struct dsa_mall_policer_tc_entry *policer) 687 { 688 struct ocelot *ocelot = ds->priv; 689 struct ocelot_policer pol = { 690 .rate = div_u64(policer->rate_bytes_per_sec, 1000) * 8, 691 .burst = div_u64(policer->rate_bytes_per_sec * 692 PSCHED_NS2TICKS(policer->burst), 693 PSCHED_TICKS_PER_SEC), 694 }; 695 696 return ocelot_port_policer_add(ocelot, port, &pol); 697 } 698 699 static void felix_port_policer_del(struct dsa_switch *ds, int port) 700 { 701 struct ocelot *ocelot = ds->priv; 702 703 ocelot_port_policer_del(ocelot, port); 704 } 705 706 static const struct dsa_switch_ops felix_switch_ops = { 707 .get_tag_protocol = felix_get_tag_protocol, 708 .setup = felix_setup, 709 .teardown = felix_teardown, 710 .set_ageing_time = felix_set_ageing_time, 711 .get_strings = felix_get_strings, 712 .get_ethtool_stats = felix_get_ethtool_stats, 713 .get_sset_count = felix_get_sset_count, 714 .get_ts_info = felix_get_ts_info, 715 .phylink_validate = felix_phylink_validate, 716 .phylink_mac_link_state = felix_phylink_mac_pcs_get_state, 717 .phylink_mac_config = felix_phylink_mac_config, 718 .phylink_mac_an_restart = felix_phylink_mac_an_restart, 719 .phylink_mac_link_down = felix_phylink_mac_link_down, 720 .phylink_mac_link_up = felix_phylink_mac_link_up, 721 .port_enable = felix_port_enable, 722 .port_disable = felix_port_disable, 723 .port_fdb_dump = felix_fdb_dump, 724 .port_fdb_add = felix_fdb_add, 725 .port_fdb_del = felix_fdb_del, 726 .port_bridge_join = felix_bridge_join, 727 .port_bridge_leave = felix_bridge_leave, 728 .port_stp_state_set = felix_bridge_stp_state_set, 729 .port_vlan_prepare = felix_vlan_prepare, 730 .port_vlan_filtering = felix_vlan_filtering, 731 .port_vlan_add = felix_vlan_add, 732 .port_vlan_del = felix_vlan_del, 733 .port_hwtstamp_get = felix_hwtstamp_get, 734 .port_hwtstamp_set = felix_hwtstamp_set, 735 .port_rxtstamp = felix_rxtstamp, 736 .port_txtstamp = felix_txtstamp, 737 .port_change_mtu = felix_change_mtu, 738 .port_max_mtu = felix_get_max_mtu, 739 .port_policer_add = felix_port_policer_add, 740 .port_policer_del = felix_port_policer_del, 741 .cls_flower_add = felix_cls_flower_add, 742 .cls_flower_del = felix_cls_flower_del, 743 .cls_flower_stats = felix_cls_flower_stats, 744 }; 745 746 static struct felix_info *felix_instance_tbl[] = { 747 [FELIX_INSTANCE_VSC9959] = &felix_info_vsc9959, 748 }; 749 750 static irqreturn_t felix_irq_handler(int irq, void *data) 751 { 752 struct ocelot *ocelot = (struct ocelot *)data; 753 754 /* The INTB interrupt is used for both PTP TX timestamp interrupt 755 * and preemption status change interrupt on each port. 756 * 757 * - Get txtstamp if have 758 * - TODO: handle preemption. Without handling it, driver may get 759 * interrupt storm. 760 */ 761 762 ocelot_get_txtstamp(ocelot); 763 764 return IRQ_HANDLED; 765 } 766 767 static int felix_pci_probe(struct pci_dev *pdev, 768 const struct pci_device_id *id) 769 { 770 enum felix_instance instance = id->driver_data; 771 struct dsa_switch *ds; 772 struct ocelot *ocelot; 773 struct felix *felix; 774 int err; 775 776 if (pdev->dev.of_node && !of_device_is_available(pdev->dev.of_node)) { 777 dev_info(&pdev->dev, "device is disabled, skipping\n"); 778 return -ENODEV; 779 } 780 781 err = pci_enable_device(pdev); 782 if (err) { 783 dev_err(&pdev->dev, "device enable failed\n"); 784 goto err_pci_enable; 785 } 786 787 /* set up for high or low dma */ 788 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 789 if (err) { 790 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 791 if (err) { 792 dev_err(&pdev->dev, 793 "DMA configuration failed: 0x%x\n", err); 794 goto err_dma; 795 } 796 } 797 798 felix = kzalloc(sizeof(struct felix), GFP_KERNEL); 799 if (!felix) { 800 err = -ENOMEM; 801 dev_err(&pdev->dev, "Failed to allocate driver memory\n"); 802 goto err_alloc_felix; 803 } 804 805 pci_set_drvdata(pdev, felix); 806 ocelot = &felix->ocelot; 807 ocelot->dev = &pdev->dev; 808 felix->pdev = pdev; 809 felix->info = felix_instance_tbl[instance]; 810 811 pci_set_master(pdev); 812 813 err = devm_request_threaded_irq(&pdev->dev, pdev->irq, NULL, 814 &felix_irq_handler, IRQF_ONESHOT, 815 "felix-intb", ocelot); 816 if (err) { 817 dev_err(&pdev->dev, "Failed to request irq\n"); 818 goto err_alloc_irq; 819 } 820 821 ocelot->ptp = 1; 822 823 ds = kzalloc(sizeof(struct dsa_switch), GFP_KERNEL); 824 if (!ds) { 825 err = -ENOMEM; 826 dev_err(&pdev->dev, "Failed to allocate DSA switch\n"); 827 goto err_alloc_ds; 828 } 829 830 ds->dev = &pdev->dev; 831 ds->num_ports = felix->info->num_ports; 832 ds->ops = &felix_switch_ops; 833 ds->priv = ocelot; 834 felix->ds = ds; 835 836 err = dsa_register_switch(ds); 837 if (err) { 838 dev_err(&pdev->dev, "Failed to register DSA switch: %d\n", err); 839 goto err_register_ds; 840 } 841 842 return 0; 843 844 err_register_ds: 845 kfree(ds); 846 err_alloc_ds: 847 err_alloc_irq: 848 err_alloc_felix: 849 kfree(felix); 850 err_dma: 851 pci_disable_device(pdev); 852 err_pci_enable: 853 return err; 854 } 855 856 static void felix_pci_remove(struct pci_dev *pdev) 857 { 858 struct felix *felix; 859 860 felix = pci_get_drvdata(pdev); 861 862 dsa_unregister_switch(felix->ds); 863 864 kfree(felix->ds); 865 kfree(felix); 866 867 pci_disable_device(pdev); 868 } 869 870 static struct pci_device_id felix_ids[] = { 871 { 872 /* NXP LS1028A */ 873 PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0xEEF0), 874 .driver_data = FELIX_INSTANCE_VSC9959, 875 }, 876 { 0, } 877 }; 878 MODULE_DEVICE_TABLE(pci, felix_ids); 879 880 static struct pci_driver felix_pci_driver = { 881 .name = KBUILD_MODNAME, 882 .id_table = felix_ids, 883 .probe = felix_pci_probe, 884 .remove = felix_pci_remove, 885 }; 886 887 module_pci_driver(felix_pci_driver); 888 889 MODULE_DESCRIPTION("Felix Switch driver"); 890 MODULE_LICENSE("GPL v2"); 891