1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 2 /* 3 * Microsemi Ocelot Switch driver 4 * 5 * Copyright (c) 2017 Microsemi Corporation 6 */ 7 #include <linux/dsa/ocelot.h> 8 #include <linux/if_bridge.h> 9 #include <linux/ptp_classify.h> 10 #include <soc/mscc/ocelot_vcap.h> 11 #include "ocelot.h" 12 #include "ocelot_vcap.h" 13 14 #define TABLE_UPDATE_SLEEP_US 10 15 #define TABLE_UPDATE_TIMEOUT_US 100000 16 #define OCELOT_RSV_VLAN_RANGE_START 4000 17 18 struct ocelot_mact_entry { 19 u8 mac[ETH_ALEN]; 20 u16 vid; 21 enum macaccess_entry_type type; 22 }; 23 24 /* Caller must hold &ocelot->mact_lock */ 25 static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot) 26 { 27 return ocelot_read(ocelot, ANA_TABLES_MACACCESS); 28 } 29 30 /* Caller must hold &ocelot->mact_lock */ 31 static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot) 32 { 33 u32 val; 34 35 return readx_poll_timeout(ocelot_mact_read_macaccess, 36 ocelot, val, 37 (val & ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M) == 38 MACACCESS_CMD_IDLE, 39 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); 40 } 41 42 /* Caller must hold &ocelot->mact_lock */ 43 static void ocelot_mact_select(struct ocelot *ocelot, 44 const unsigned char mac[ETH_ALEN], 45 unsigned int vid) 46 { 47 u32 macl = 0, mach = 0; 48 49 /* Set the MAC address to handle and the vlan associated in a format 50 * understood by the hardware. 51 */ 52 mach |= vid << 16; 53 mach |= mac[0] << 8; 54 mach |= mac[1] << 0; 55 macl |= mac[2] << 24; 56 macl |= mac[3] << 16; 57 macl |= mac[4] << 8; 58 macl |= mac[5] << 0; 59 60 ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA); 61 ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA); 62 63 } 64 65 static int __ocelot_mact_learn(struct ocelot *ocelot, int port, 66 const unsigned char mac[ETH_ALEN], 67 unsigned int vid, enum macaccess_entry_type type) 68 { 69 u32 cmd = ANA_TABLES_MACACCESS_VALID | 70 ANA_TABLES_MACACCESS_DEST_IDX(port) | 71 ANA_TABLES_MACACCESS_ENTRYTYPE(type) | 72 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN); 73 unsigned int mc_ports; 74 int err; 75 76 /* Set MAC_CPU_COPY if the CPU port is used by a multicast entry */ 77 if (type == ENTRYTYPE_MACv4) 78 mc_ports = (mac[1] << 8) | mac[2]; 79 else if (type == ENTRYTYPE_MACv6) 80 mc_ports = (mac[0] << 8) | mac[1]; 81 else 82 mc_ports = 0; 83 84 if (mc_ports & BIT(ocelot->num_phys_ports)) 85 cmd |= ANA_TABLES_MACACCESS_MAC_CPU_COPY; 86 87 ocelot_mact_select(ocelot, mac, vid); 88 89 /* Issue a write command */ 90 ocelot_write(ocelot, cmd, ANA_TABLES_MACACCESS); 91 92 err = ocelot_mact_wait_for_completion(ocelot); 93 94 return err; 95 } 96 97 int ocelot_mact_learn(struct ocelot *ocelot, int port, 98 const unsigned char mac[ETH_ALEN], 99 unsigned int vid, enum macaccess_entry_type type) 100 { 101 int ret; 102 103 mutex_lock(&ocelot->mact_lock); 104 ret = __ocelot_mact_learn(ocelot, port, mac, vid, type); 105 mutex_unlock(&ocelot->mact_lock); 106 107 return ret; 108 } 109 EXPORT_SYMBOL(ocelot_mact_learn); 110 111 int ocelot_mact_forget(struct ocelot *ocelot, 112 const unsigned char mac[ETH_ALEN], unsigned int vid) 113 { 114 int err; 115 116 mutex_lock(&ocelot->mact_lock); 117 118 ocelot_mact_select(ocelot, mac, vid); 119 120 /* Issue a forget command */ 121 ocelot_write(ocelot, 122 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET), 123 ANA_TABLES_MACACCESS); 124 125 err = ocelot_mact_wait_for_completion(ocelot); 126 127 mutex_unlock(&ocelot->mact_lock); 128 129 return err; 130 } 131 EXPORT_SYMBOL(ocelot_mact_forget); 132 133 int ocelot_mact_lookup(struct ocelot *ocelot, int *dst_idx, 134 const unsigned char mac[ETH_ALEN], 135 unsigned int vid, enum macaccess_entry_type *type) 136 { 137 int val; 138 139 mutex_lock(&ocelot->mact_lock); 140 141 ocelot_mact_select(ocelot, mac, vid); 142 143 /* Issue a read command with MACACCESS_VALID=1. */ 144 ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID | 145 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ), 146 ANA_TABLES_MACACCESS); 147 148 if (ocelot_mact_wait_for_completion(ocelot)) { 149 mutex_unlock(&ocelot->mact_lock); 150 return -ETIMEDOUT; 151 } 152 153 /* Read back the entry flags */ 154 val = ocelot_read(ocelot, ANA_TABLES_MACACCESS); 155 156 mutex_unlock(&ocelot->mact_lock); 157 158 if (!(val & ANA_TABLES_MACACCESS_VALID)) 159 return -ENOENT; 160 161 *dst_idx = ANA_TABLES_MACACCESS_DEST_IDX_X(val); 162 *type = ANA_TABLES_MACACCESS_ENTRYTYPE_X(val); 163 164 return 0; 165 } 166 EXPORT_SYMBOL(ocelot_mact_lookup); 167 168 int ocelot_mact_learn_streamdata(struct ocelot *ocelot, int dst_idx, 169 const unsigned char mac[ETH_ALEN], 170 unsigned int vid, 171 enum macaccess_entry_type type, 172 int sfid, int ssid) 173 { 174 int ret; 175 176 mutex_lock(&ocelot->mact_lock); 177 178 ocelot_write(ocelot, 179 (sfid < 0 ? 0 : ANA_TABLES_STREAMDATA_SFID_VALID) | 180 ANA_TABLES_STREAMDATA_SFID(sfid) | 181 (ssid < 0 ? 0 : ANA_TABLES_STREAMDATA_SSID_VALID) | 182 ANA_TABLES_STREAMDATA_SSID(ssid), 183 ANA_TABLES_STREAMDATA); 184 185 ret = __ocelot_mact_learn(ocelot, dst_idx, mac, vid, type); 186 187 mutex_unlock(&ocelot->mact_lock); 188 189 return ret; 190 } 191 EXPORT_SYMBOL(ocelot_mact_learn_streamdata); 192 193 static void ocelot_mact_init(struct ocelot *ocelot) 194 { 195 /* Configure the learning mode entries attributes: 196 * - Do not copy the frame to the CPU extraction queues. 197 * - Use the vlan and mac_cpoy for dmac lookup. 198 */ 199 ocelot_rmw(ocelot, 0, 200 ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS 201 | ANA_AGENCTRL_LEARN_FWD_KILL 202 | ANA_AGENCTRL_LEARN_IGNORE_VLAN, 203 ANA_AGENCTRL); 204 205 /* Clear the MAC table. We are not concurrent with anyone, so 206 * holding &ocelot->mact_lock is pointless. 207 */ 208 ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS); 209 } 210 211 static void ocelot_vcap_enable(struct ocelot *ocelot, int port) 212 { 213 ocelot_write_gix(ocelot, ANA_PORT_VCAP_S2_CFG_S2_ENA | 214 ANA_PORT_VCAP_S2_CFG_S2_IP6_CFG(0xa), 215 ANA_PORT_VCAP_S2_CFG, port); 216 217 ocelot_write_gix(ocelot, ANA_PORT_VCAP_CFG_S1_ENA, 218 ANA_PORT_VCAP_CFG, port); 219 220 ocelot_rmw_gix(ocelot, REW_PORT_CFG_ES0_EN, 221 REW_PORT_CFG_ES0_EN, 222 REW_PORT_CFG, port); 223 } 224 225 static int ocelot_single_vlan_aware_bridge(struct ocelot *ocelot, 226 struct netlink_ext_ack *extack) 227 { 228 struct net_device *bridge = NULL; 229 int port; 230 231 for (port = 0; port < ocelot->num_phys_ports; port++) { 232 struct ocelot_port *ocelot_port = ocelot->ports[port]; 233 234 if (!ocelot_port || !ocelot_port->bridge || 235 !br_vlan_enabled(ocelot_port->bridge)) 236 continue; 237 238 if (!bridge) { 239 bridge = ocelot_port->bridge; 240 continue; 241 } 242 243 if (bridge == ocelot_port->bridge) 244 continue; 245 246 NL_SET_ERR_MSG_MOD(extack, 247 "Only one VLAN-aware bridge is supported"); 248 return -EBUSY; 249 } 250 251 return 0; 252 } 253 254 static inline u32 ocelot_vlant_read_vlanaccess(struct ocelot *ocelot) 255 { 256 return ocelot_read(ocelot, ANA_TABLES_VLANACCESS); 257 } 258 259 static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot) 260 { 261 u32 val; 262 263 return readx_poll_timeout(ocelot_vlant_read_vlanaccess, 264 ocelot, 265 val, 266 (val & ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M) == 267 ANA_TABLES_VLANACCESS_CMD_IDLE, 268 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); 269 } 270 271 static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask) 272 { 273 /* Select the VID to configure */ 274 ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid), 275 ANA_TABLES_VLANTIDX); 276 /* Set the vlan port members mask and issue a write command */ 277 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) | 278 ANA_TABLES_VLANACCESS_CMD_WRITE, 279 ANA_TABLES_VLANACCESS); 280 281 return ocelot_vlant_wait_for_completion(ocelot); 282 } 283 284 static int ocelot_port_num_untagged_vlans(struct ocelot *ocelot, int port) 285 { 286 struct ocelot_bridge_vlan *vlan; 287 int num_untagged = 0; 288 289 list_for_each_entry(vlan, &ocelot->vlans, list) { 290 if (!(vlan->portmask & BIT(port))) 291 continue; 292 293 if (vlan->untagged & BIT(port)) 294 num_untagged++; 295 } 296 297 return num_untagged; 298 } 299 300 static int ocelot_port_num_tagged_vlans(struct ocelot *ocelot, int port) 301 { 302 struct ocelot_bridge_vlan *vlan; 303 int num_tagged = 0; 304 305 list_for_each_entry(vlan, &ocelot->vlans, list) { 306 if (!(vlan->portmask & BIT(port))) 307 continue; 308 309 if (!(vlan->untagged & BIT(port))) 310 num_tagged++; 311 } 312 313 return num_tagged; 314 } 315 316 /* We use native VLAN when we have to mix egress-tagged VLANs with exactly 317 * _one_ egress-untagged VLAN (_the_ native VLAN) 318 */ 319 static bool ocelot_port_uses_native_vlan(struct ocelot *ocelot, int port) 320 { 321 return ocelot_port_num_tagged_vlans(ocelot, port) && 322 ocelot_port_num_untagged_vlans(ocelot, port) == 1; 323 } 324 325 static struct ocelot_bridge_vlan * 326 ocelot_port_find_native_vlan(struct ocelot *ocelot, int port) 327 { 328 struct ocelot_bridge_vlan *vlan; 329 330 list_for_each_entry(vlan, &ocelot->vlans, list) 331 if (vlan->portmask & BIT(port) && vlan->untagged & BIT(port)) 332 return vlan; 333 334 return NULL; 335 } 336 337 /* Keep in sync REW_TAG_CFG_TAG_CFG and, if applicable, 338 * REW_PORT_VLAN_CFG_PORT_VID, with the bridge VLAN table and VLAN awareness 339 * state of the port. 340 */ 341 static void ocelot_port_manage_port_tag(struct ocelot *ocelot, int port) 342 { 343 struct ocelot_port *ocelot_port = ocelot->ports[port]; 344 enum ocelot_port_tag_config tag_cfg; 345 bool uses_native_vlan = false; 346 347 if (ocelot_port->vlan_aware) { 348 uses_native_vlan = ocelot_port_uses_native_vlan(ocelot, port); 349 350 if (uses_native_vlan) 351 tag_cfg = OCELOT_PORT_TAG_NATIVE; 352 else if (ocelot_port_num_untagged_vlans(ocelot, port)) 353 tag_cfg = OCELOT_PORT_TAG_DISABLED; 354 else 355 tag_cfg = OCELOT_PORT_TAG_TRUNK; 356 } else { 357 tag_cfg = OCELOT_PORT_TAG_DISABLED; 358 } 359 360 ocelot_rmw_gix(ocelot, REW_TAG_CFG_TAG_CFG(tag_cfg), 361 REW_TAG_CFG_TAG_CFG_M, 362 REW_TAG_CFG, port); 363 364 if (uses_native_vlan) { 365 struct ocelot_bridge_vlan *native_vlan; 366 367 /* Not having a native VLAN is impossible, because 368 * ocelot_port_num_untagged_vlans has returned 1. 369 * So there is no use in checking for NULL here. 370 */ 371 native_vlan = ocelot_port_find_native_vlan(ocelot, port); 372 373 ocelot_rmw_gix(ocelot, 374 REW_PORT_VLAN_CFG_PORT_VID(native_vlan->vid), 375 REW_PORT_VLAN_CFG_PORT_VID_M, 376 REW_PORT_VLAN_CFG, port); 377 } 378 } 379 380 int ocelot_bridge_num_find(struct ocelot *ocelot, 381 const struct net_device *bridge) 382 { 383 int port; 384 385 for (port = 0; port < ocelot->num_phys_ports; port++) { 386 struct ocelot_port *ocelot_port = ocelot->ports[port]; 387 388 if (ocelot_port && ocelot_port->bridge == bridge) 389 return ocelot_port->bridge_num; 390 } 391 392 return -1; 393 } 394 EXPORT_SYMBOL_GPL(ocelot_bridge_num_find); 395 396 static u16 ocelot_vlan_unaware_pvid(struct ocelot *ocelot, 397 const struct net_device *bridge) 398 { 399 int bridge_num; 400 401 /* Standalone ports use VID 0 */ 402 if (!bridge) 403 return 0; 404 405 bridge_num = ocelot_bridge_num_find(ocelot, bridge); 406 if (WARN_ON(bridge_num < 0)) 407 return 0; 408 409 /* VLAN-unaware bridges use a reserved VID going from 4095 downwards */ 410 return VLAN_N_VID - bridge_num - 1; 411 } 412 413 /* Default vlan to clasify for untagged frames (may be zero) */ 414 static void ocelot_port_set_pvid(struct ocelot *ocelot, int port, 415 const struct ocelot_bridge_vlan *pvid_vlan) 416 { 417 struct ocelot_port *ocelot_port = ocelot->ports[port]; 418 u16 pvid = ocelot_vlan_unaware_pvid(ocelot, ocelot_port->bridge); 419 u32 val = 0; 420 421 ocelot_port->pvid_vlan = pvid_vlan; 422 423 if (ocelot_port->vlan_aware && pvid_vlan) 424 pvid = pvid_vlan->vid; 425 426 ocelot_rmw_gix(ocelot, 427 ANA_PORT_VLAN_CFG_VLAN_VID(pvid), 428 ANA_PORT_VLAN_CFG_VLAN_VID_M, 429 ANA_PORT_VLAN_CFG, port); 430 431 /* If there's no pvid, we should drop not only untagged traffic (which 432 * happens automatically), but also 802.1p traffic which gets 433 * classified to VLAN 0, but that is always in our RX filter, so it 434 * would get accepted were it not for this setting. 435 */ 436 if (!pvid_vlan && ocelot_port->vlan_aware) 437 val = ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA | 438 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA; 439 440 ocelot_rmw_gix(ocelot, val, 441 ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA | 442 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA, 443 ANA_PORT_DROP_CFG, port); 444 } 445 446 static struct ocelot_bridge_vlan *ocelot_bridge_vlan_find(struct ocelot *ocelot, 447 u16 vid) 448 { 449 struct ocelot_bridge_vlan *vlan; 450 451 list_for_each_entry(vlan, &ocelot->vlans, list) 452 if (vlan->vid == vid) 453 return vlan; 454 455 return NULL; 456 } 457 458 static int ocelot_vlan_member_add(struct ocelot *ocelot, int port, u16 vid, 459 bool untagged) 460 { 461 struct ocelot_bridge_vlan *vlan = ocelot_bridge_vlan_find(ocelot, vid); 462 unsigned long portmask; 463 int err; 464 465 if (vlan) { 466 portmask = vlan->portmask | BIT(port); 467 468 err = ocelot_vlant_set_mask(ocelot, vid, portmask); 469 if (err) 470 return err; 471 472 vlan->portmask = portmask; 473 /* Bridge VLANs can be overwritten with a different 474 * egress-tagging setting, so make sure to override an untagged 475 * with a tagged VID if that's going on. 476 */ 477 if (untagged) 478 vlan->untagged |= BIT(port); 479 else 480 vlan->untagged &= ~BIT(port); 481 482 return 0; 483 } 484 485 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 486 if (!vlan) 487 return -ENOMEM; 488 489 portmask = BIT(port); 490 491 err = ocelot_vlant_set_mask(ocelot, vid, portmask); 492 if (err) { 493 kfree(vlan); 494 return err; 495 } 496 497 vlan->vid = vid; 498 vlan->portmask = portmask; 499 if (untagged) 500 vlan->untagged = BIT(port); 501 INIT_LIST_HEAD(&vlan->list); 502 list_add_tail(&vlan->list, &ocelot->vlans); 503 504 return 0; 505 } 506 507 static int ocelot_vlan_member_del(struct ocelot *ocelot, int port, u16 vid) 508 { 509 struct ocelot_bridge_vlan *vlan = ocelot_bridge_vlan_find(ocelot, vid); 510 unsigned long portmask; 511 int err; 512 513 if (!vlan) 514 return 0; 515 516 portmask = vlan->portmask & ~BIT(port); 517 518 err = ocelot_vlant_set_mask(ocelot, vid, portmask); 519 if (err) 520 return err; 521 522 vlan->portmask = portmask; 523 if (vlan->portmask) 524 return 0; 525 526 list_del(&vlan->list); 527 kfree(vlan); 528 529 return 0; 530 } 531 532 static int ocelot_add_vlan_unaware_pvid(struct ocelot *ocelot, int port, 533 const struct net_device *bridge) 534 { 535 u16 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 536 537 return ocelot_vlan_member_add(ocelot, port, vid, true); 538 } 539 540 static int ocelot_del_vlan_unaware_pvid(struct ocelot *ocelot, int port, 541 const struct net_device *bridge) 542 { 543 u16 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 544 545 return ocelot_vlan_member_del(ocelot, port, vid); 546 } 547 548 int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port, 549 bool vlan_aware, struct netlink_ext_ack *extack) 550 { 551 struct ocelot_vcap_block *block = &ocelot->block[VCAP_IS1]; 552 struct ocelot_port *ocelot_port = ocelot->ports[port]; 553 struct ocelot_vcap_filter *filter; 554 int err = 0; 555 u32 val; 556 557 list_for_each_entry(filter, &block->rules, list) { 558 if (filter->ingress_port_mask & BIT(port) && 559 filter->action.vid_replace_ena) { 560 NL_SET_ERR_MSG_MOD(extack, 561 "Cannot change VLAN state with vlan modify rules active"); 562 return -EBUSY; 563 } 564 } 565 566 err = ocelot_single_vlan_aware_bridge(ocelot, extack); 567 if (err) 568 return err; 569 570 if (vlan_aware) 571 err = ocelot_del_vlan_unaware_pvid(ocelot, port, 572 ocelot_port->bridge); 573 else if (ocelot_port->bridge) 574 err = ocelot_add_vlan_unaware_pvid(ocelot, port, 575 ocelot_port->bridge); 576 if (err) 577 return err; 578 579 ocelot_port->vlan_aware = vlan_aware; 580 581 if (vlan_aware) 582 val = ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | 583 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1); 584 else 585 val = 0; 586 ocelot_rmw_gix(ocelot, val, 587 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | 588 ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M, 589 ANA_PORT_VLAN_CFG, port); 590 591 ocelot_port_set_pvid(ocelot, port, ocelot_port->pvid_vlan); 592 ocelot_port_manage_port_tag(ocelot, port); 593 594 return 0; 595 } 596 EXPORT_SYMBOL(ocelot_port_vlan_filtering); 597 598 int ocelot_vlan_prepare(struct ocelot *ocelot, int port, u16 vid, bool pvid, 599 bool untagged, struct netlink_ext_ack *extack) 600 { 601 if (untagged) { 602 /* We are adding an egress-tagged VLAN */ 603 if (ocelot_port_uses_native_vlan(ocelot, port)) { 604 NL_SET_ERR_MSG_MOD(extack, 605 "Port with egress-tagged VLANs cannot have more than one egress-untagged (native) VLAN"); 606 return -EBUSY; 607 } 608 } else { 609 /* We are adding an egress-tagged VLAN */ 610 if (ocelot_port_num_untagged_vlans(ocelot, port) > 1) { 611 NL_SET_ERR_MSG_MOD(extack, 612 "Port with more than one egress-untagged VLAN cannot have egress-tagged VLANs"); 613 return -EBUSY; 614 } 615 } 616 617 if (vid > OCELOT_RSV_VLAN_RANGE_START) { 618 NL_SET_ERR_MSG_MOD(extack, 619 "VLAN range 4000-4095 reserved for VLAN-unaware bridging"); 620 return -EBUSY; 621 } 622 623 return 0; 624 } 625 EXPORT_SYMBOL(ocelot_vlan_prepare); 626 627 int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid, 628 bool untagged) 629 { 630 int err; 631 632 /* Ignore VID 0 added to our RX filter by the 8021q module, since 633 * that collides with OCELOT_STANDALONE_PVID and changes it from 634 * egress-untagged to egress-tagged. 635 */ 636 if (!vid) 637 return 0; 638 639 err = ocelot_vlan_member_add(ocelot, port, vid, untagged); 640 if (err) 641 return err; 642 643 /* Default ingress vlan classification */ 644 if (pvid) 645 ocelot_port_set_pvid(ocelot, port, 646 ocelot_bridge_vlan_find(ocelot, vid)); 647 648 /* Untagged egress vlan clasification */ 649 ocelot_port_manage_port_tag(ocelot, port); 650 651 return 0; 652 } 653 EXPORT_SYMBOL(ocelot_vlan_add); 654 655 int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid) 656 { 657 struct ocelot_port *ocelot_port = ocelot->ports[port]; 658 bool del_pvid = false; 659 int err; 660 661 if (!vid) 662 return 0; 663 664 if (ocelot_port->pvid_vlan && ocelot_port->pvid_vlan->vid == vid) 665 del_pvid = true; 666 667 err = ocelot_vlan_member_del(ocelot, port, vid); 668 if (err) 669 return err; 670 671 /* Ingress */ 672 if (del_pvid) 673 ocelot_port_set_pvid(ocelot, port, NULL); 674 675 /* Egress */ 676 ocelot_port_manage_port_tag(ocelot, port); 677 678 return 0; 679 } 680 EXPORT_SYMBOL(ocelot_vlan_del); 681 682 static void ocelot_vlan_init(struct ocelot *ocelot) 683 { 684 unsigned long all_ports = GENMASK(ocelot->num_phys_ports - 1, 0); 685 u16 port, vid; 686 687 /* Clear VLAN table, by default all ports are members of all VLANs */ 688 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT, 689 ANA_TABLES_VLANACCESS); 690 ocelot_vlant_wait_for_completion(ocelot); 691 692 /* Configure the port VLAN memberships */ 693 for (vid = 1; vid < VLAN_N_VID; vid++) 694 ocelot_vlant_set_mask(ocelot, vid, 0); 695 696 /* We need VID 0 to get traffic on standalone ports. 697 * It is added automatically if the 8021q module is loaded, but we 698 * can't rely on that since it might not be. 699 */ 700 ocelot_vlant_set_mask(ocelot, OCELOT_STANDALONE_PVID, all_ports); 701 702 /* Set vlan ingress filter mask to all ports but the CPU port by 703 * default. 704 */ 705 ocelot_write(ocelot, all_ports, ANA_VLANMASK); 706 707 for (port = 0; port < ocelot->num_phys_ports; port++) { 708 ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port); 709 ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port); 710 } 711 } 712 713 static u32 ocelot_read_eq_avail(struct ocelot *ocelot, int port) 714 { 715 return ocelot_read_rix(ocelot, QSYS_SW_STATUS, port); 716 } 717 718 static int ocelot_port_flush(struct ocelot *ocelot, int port) 719 { 720 unsigned int pause_ena; 721 int err, val; 722 723 /* Disable dequeuing from the egress queues */ 724 ocelot_rmw_rix(ocelot, QSYS_PORT_MODE_DEQUEUE_DIS, 725 QSYS_PORT_MODE_DEQUEUE_DIS, 726 QSYS_PORT_MODE, port); 727 728 /* Disable flow control */ 729 ocelot_fields_read(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, &pause_ena); 730 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 0); 731 732 /* Disable priority flow control */ 733 ocelot_fields_write(ocelot, port, 734 QSYS_SWITCH_PORT_MODE_TX_PFC_ENA, 0); 735 736 /* Wait at least the time it takes to receive a frame of maximum length 737 * at the port. 738 * Worst-case delays for 10 kilobyte jumbo frames are: 739 * 8 ms on a 10M port 740 * 800 μs on a 100M port 741 * 80 μs on a 1G port 742 * 32 μs on a 2.5G port 743 */ 744 usleep_range(8000, 10000); 745 746 /* Disable half duplex backpressure. */ 747 ocelot_rmw_rix(ocelot, 0, SYS_FRONT_PORT_MODE_HDX_MODE, 748 SYS_FRONT_PORT_MODE, port); 749 750 /* Flush the queues associated with the port. */ 751 ocelot_rmw_gix(ocelot, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG_FLUSH_ENA, 752 REW_PORT_CFG, port); 753 754 /* Enable dequeuing from the egress queues. */ 755 ocelot_rmw_rix(ocelot, 0, QSYS_PORT_MODE_DEQUEUE_DIS, QSYS_PORT_MODE, 756 port); 757 758 /* Wait until flushing is complete. */ 759 err = read_poll_timeout(ocelot_read_eq_avail, val, !val, 760 100, 2000000, false, ocelot, port); 761 762 /* Clear flushing again. */ 763 ocelot_rmw_gix(ocelot, 0, REW_PORT_CFG_FLUSH_ENA, REW_PORT_CFG, port); 764 765 /* Re-enable flow control */ 766 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, pause_ena); 767 768 return err; 769 } 770 771 void ocelot_phylink_mac_link_down(struct ocelot *ocelot, int port, 772 unsigned int link_an_mode, 773 phy_interface_t interface, 774 unsigned long quirks) 775 { 776 struct ocelot_port *ocelot_port = ocelot->ports[port]; 777 int err; 778 779 ocelot_port->speed = SPEED_UNKNOWN; 780 781 ocelot_port_rmwl(ocelot_port, 0, DEV_MAC_ENA_CFG_RX_ENA, 782 DEV_MAC_ENA_CFG); 783 784 if (ocelot->ops->cut_through_fwd) { 785 mutex_lock(&ocelot->fwd_domain_lock); 786 ocelot->ops->cut_through_fwd(ocelot); 787 mutex_unlock(&ocelot->fwd_domain_lock); 788 } 789 790 ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0); 791 792 err = ocelot_port_flush(ocelot, port); 793 if (err) 794 dev_err(ocelot->dev, "failed to flush port %d: %d\n", 795 port, err); 796 797 /* Put the port in reset. */ 798 if (interface != PHY_INTERFACE_MODE_QSGMII || 799 !(quirks & OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP)) 800 ocelot_port_rmwl(ocelot_port, 801 DEV_CLOCK_CFG_MAC_TX_RST | 802 DEV_CLOCK_CFG_MAC_RX_RST, 803 DEV_CLOCK_CFG_MAC_TX_RST | 804 DEV_CLOCK_CFG_MAC_RX_RST, 805 DEV_CLOCK_CFG); 806 } 807 EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_down); 808 809 void ocelot_phylink_mac_link_up(struct ocelot *ocelot, int port, 810 struct phy_device *phydev, 811 unsigned int link_an_mode, 812 phy_interface_t interface, 813 int speed, int duplex, 814 bool tx_pause, bool rx_pause, 815 unsigned long quirks) 816 { 817 struct ocelot_port *ocelot_port = ocelot->ports[port]; 818 int mac_speed, mode = 0; 819 u32 mac_fc_cfg; 820 821 ocelot_port->speed = speed; 822 823 /* The MAC might be integrated in systems where the MAC speed is fixed 824 * and it's the PCS who is performing the rate adaptation, so we have 825 * to write "1000Mbps" into the LINK_SPEED field of DEV_CLOCK_CFG 826 * (which is also its default value). 827 */ 828 if ((quirks & OCELOT_QUIRK_PCS_PERFORMS_RATE_ADAPTATION) || 829 speed == SPEED_1000) { 830 mac_speed = OCELOT_SPEED_1000; 831 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA; 832 } else if (speed == SPEED_2500) { 833 mac_speed = OCELOT_SPEED_2500; 834 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA; 835 } else if (speed == SPEED_100) { 836 mac_speed = OCELOT_SPEED_100; 837 } else { 838 mac_speed = OCELOT_SPEED_10; 839 } 840 841 if (duplex == DUPLEX_FULL) 842 mode |= DEV_MAC_MODE_CFG_FDX_ENA; 843 844 ocelot_port_writel(ocelot_port, mode, DEV_MAC_MODE_CFG); 845 846 /* Take port out of reset by clearing the MAC_TX_RST, MAC_RX_RST and 847 * PORT_RST bits in DEV_CLOCK_CFG. 848 */ 849 ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(mac_speed), 850 DEV_CLOCK_CFG); 851 852 switch (speed) { 853 case SPEED_10: 854 mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_10); 855 break; 856 case SPEED_100: 857 mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_100); 858 break; 859 case SPEED_1000: 860 case SPEED_2500: 861 mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_1000); 862 break; 863 default: 864 dev_err(ocelot->dev, "Unsupported speed on port %d: %d\n", 865 port, speed); 866 return; 867 } 868 869 /* Handle RX pause in all cases, with 2500base-X this is used for rate 870 * adaptation. 871 */ 872 mac_fc_cfg |= SYS_MAC_FC_CFG_RX_FC_ENA; 873 874 if (tx_pause) 875 mac_fc_cfg |= SYS_MAC_FC_CFG_TX_FC_ENA | 876 SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) | 877 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) | 878 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA; 879 880 /* Flow control. Link speed is only used here to evaluate the time 881 * specification in incoming pause frames. 882 */ 883 ocelot_write_rix(ocelot, mac_fc_cfg, SYS_MAC_FC_CFG, port); 884 885 ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port); 886 887 /* Don't attempt to send PAUSE frames on the NPI port, it's broken */ 888 if (port != ocelot->npi) 889 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 890 tx_pause); 891 892 /* Undo the effects of ocelot_phylink_mac_link_down: 893 * enable MAC module 894 */ 895 ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA | 896 DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG); 897 898 /* If the port supports cut-through forwarding, update the masks before 899 * enabling forwarding on the port. 900 */ 901 if (ocelot->ops->cut_through_fwd) { 902 mutex_lock(&ocelot->fwd_domain_lock); 903 ocelot->ops->cut_through_fwd(ocelot); 904 mutex_unlock(&ocelot->fwd_domain_lock); 905 } 906 907 /* Core: Enable port for frame transfer */ 908 ocelot_fields_write(ocelot, port, 909 QSYS_SWITCH_PORT_MODE_PORT_ENA, 1); 910 } 911 EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_up); 912 913 static int ocelot_port_add_txtstamp_skb(struct ocelot *ocelot, int port, 914 struct sk_buff *clone) 915 { 916 struct ocelot_port *ocelot_port = ocelot->ports[port]; 917 unsigned long flags; 918 919 spin_lock_irqsave(&ocelot->ts_id_lock, flags); 920 921 if (ocelot_port->ptp_skbs_in_flight == OCELOT_MAX_PTP_ID || 922 ocelot->ptp_skbs_in_flight == OCELOT_PTP_FIFO_SIZE) { 923 spin_unlock_irqrestore(&ocelot->ts_id_lock, flags); 924 return -EBUSY; 925 } 926 927 skb_shinfo(clone)->tx_flags |= SKBTX_IN_PROGRESS; 928 /* Store timestamp ID in OCELOT_SKB_CB(clone)->ts_id */ 929 OCELOT_SKB_CB(clone)->ts_id = ocelot_port->ts_id; 930 931 ocelot_port->ts_id++; 932 if (ocelot_port->ts_id == OCELOT_MAX_PTP_ID) 933 ocelot_port->ts_id = 0; 934 935 ocelot_port->ptp_skbs_in_flight++; 936 ocelot->ptp_skbs_in_flight++; 937 938 skb_queue_tail(&ocelot_port->tx_skbs, clone); 939 940 spin_unlock_irqrestore(&ocelot->ts_id_lock, flags); 941 942 return 0; 943 } 944 945 static bool ocelot_ptp_is_onestep_sync(struct sk_buff *skb, 946 unsigned int ptp_class) 947 { 948 struct ptp_header *hdr; 949 u8 msgtype, twostep; 950 951 hdr = ptp_parse_header(skb, ptp_class); 952 if (!hdr) 953 return false; 954 955 msgtype = ptp_get_msgtype(hdr, ptp_class); 956 twostep = hdr->flag_field[0] & 0x2; 957 958 if (msgtype == PTP_MSGTYPE_SYNC && twostep == 0) 959 return true; 960 961 return false; 962 } 963 964 int ocelot_port_txtstamp_request(struct ocelot *ocelot, int port, 965 struct sk_buff *skb, 966 struct sk_buff **clone) 967 { 968 struct ocelot_port *ocelot_port = ocelot->ports[port]; 969 u8 ptp_cmd = ocelot_port->ptp_cmd; 970 unsigned int ptp_class; 971 int err; 972 973 /* Don't do anything if PTP timestamping not enabled */ 974 if (!ptp_cmd) 975 return 0; 976 977 ptp_class = ptp_classify_raw(skb); 978 if (ptp_class == PTP_CLASS_NONE) 979 return -EINVAL; 980 981 /* Store ptp_cmd in OCELOT_SKB_CB(skb)->ptp_cmd */ 982 if (ptp_cmd == IFH_REW_OP_ORIGIN_PTP) { 983 if (ocelot_ptp_is_onestep_sync(skb, ptp_class)) { 984 OCELOT_SKB_CB(skb)->ptp_cmd = ptp_cmd; 985 return 0; 986 } 987 988 /* Fall back to two-step timestamping */ 989 ptp_cmd = IFH_REW_OP_TWO_STEP_PTP; 990 } 991 992 if (ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) { 993 *clone = skb_clone_sk(skb); 994 if (!(*clone)) 995 return -ENOMEM; 996 997 err = ocelot_port_add_txtstamp_skb(ocelot, port, *clone); 998 if (err) 999 return err; 1000 1001 OCELOT_SKB_CB(skb)->ptp_cmd = ptp_cmd; 1002 OCELOT_SKB_CB(*clone)->ptp_class = ptp_class; 1003 } 1004 1005 return 0; 1006 } 1007 EXPORT_SYMBOL(ocelot_port_txtstamp_request); 1008 1009 static void ocelot_get_hwtimestamp(struct ocelot *ocelot, 1010 struct timespec64 *ts) 1011 { 1012 unsigned long flags; 1013 u32 val; 1014 1015 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags); 1016 1017 /* Read current PTP time to get seconds */ 1018 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); 1019 1020 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); 1021 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_SAVE); 1022 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); 1023 ts->tv_sec = ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN); 1024 1025 /* Read packet HW timestamp from FIFO */ 1026 val = ocelot_read(ocelot, SYS_PTP_TXSTAMP); 1027 ts->tv_nsec = SYS_PTP_TXSTAMP_PTP_TXSTAMP(val); 1028 1029 /* Sec has incremented since the ts was registered */ 1030 if ((ts->tv_sec & 0x1) != !!(val & SYS_PTP_TXSTAMP_PTP_TXSTAMP_SEC)) 1031 ts->tv_sec--; 1032 1033 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); 1034 } 1035 1036 static bool ocelot_validate_ptp_skb(struct sk_buff *clone, u16 seqid) 1037 { 1038 struct ptp_header *hdr; 1039 1040 hdr = ptp_parse_header(clone, OCELOT_SKB_CB(clone)->ptp_class); 1041 if (WARN_ON(!hdr)) 1042 return false; 1043 1044 return seqid == ntohs(hdr->sequence_id); 1045 } 1046 1047 void ocelot_get_txtstamp(struct ocelot *ocelot) 1048 { 1049 int budget = OCELOT_PTP_QUEUE_SZ; 1050 1051 while (budget--) { 1052 struct sk_buff *skb, *skb_tmp, *skb_match = NULL; 1053 struct skb_shared_hwtstamps shhwtstamps; 1054 u32 val, id, seqid, txport; 1055 struct ocelot_port *port; 1056 struct timespec64 ts; 1057 unsigned long flags; 1058 1059 val = ocelot_read(ocelot, SYS_PTP_STATUS); 1060 1061 /* Check if a timestamp can be retrieved */ 1062 if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD)) 1063 break; 1064 1065 WARN_ON(val & SYS_PTP_STATUS_PTP_OVFL); 1066 1067 /* Retrieve the ts ID and Tx port */ 1068 id = SYS_PTP_STATUS_PTP_MESS_ID_X(val); 1069 txport = SYS_PTP_STATUS_PTP_MESS_TXPORT_X(val); 1070 seqid = SYS_PTP_STATUS_PTP_MESS_SEQ_ID(val); 1071 1072 port = ocelot->ports[txport]; 1073 1074 spin_lock(&ocelot->ts_id_lock); 1075 port->ptp_skbs_in_flight--; 1076 ocelot->ptp_skbs_in_flight--; 1077 spin_unlock(&ocelot->ts_id_lock); 1078 1079 /* Retrieve its associated skb */ 1080 try_again: 1081 spin_lock_irqsave(&port->tx_skbs.lock, flags); 1082 1083 skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) { 1084 if (OCELOT_SKB_CB(skb)->ts_id != id) 1085 continue; 1086 __skb_unlink(skb, &port->tx_skbs); 1087 skb_match = skb; 1088 break; 1089 } 1090 1091 spin_unlock_irqrestore(&port->tx_skbs.lock, flags); 1092 1093 if (WARN_ON(!skb_match)) 1094 continue; 1095 1096 if (!ocelot_validate_ptp_skb(skb_match, seqid)) { 1097 dev_err_ratelimited(ocelot->dev, 1098 "port %d received stale TX timestamp for seqid %d, discarding\n", 1099 txport, seqid); 1100 dev_kfree_skb_any(skb); 1101 goto try_again; 1102 } 1103 1104 /* Get the h/w timestamp */ 1105 ocelot_get_hwtimestamp(ocelot, &ts); 1106 1107 /* Set the timestamp into the skb */ 1108 memset(&shhwtstamps, 0, sizeof(shhwtstamps)); 1109 shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec); 1110 skb_complete_tx_timestamp(skb_match, &shhwtstamps); 1111 1112 /* Next ts */ 1113 ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT); 1114 } 1115 } 1116 EXPORT_SYMBOL(ocelot_get_txtstamp); 1117 1118 static int ocelot_rx_frame_word(struct ocelot *ocelot, u8 grp, bool ifh, 1119 u32 *rval) 1120 { 1121 u32 bytes_valid, val; 1122 1123 val = ocelot_read_rix(ocelot, QS_XTR_RD, grp); 1124 if (val == XTR_NOT_READY) { 1125 if (ifh) 1126 return -EIO; 1127 1128 do { 1129 val = ocelot_read_rix(ocelot, QS_XTR_RD, grp); 1130 } while (val == XTR_NOT_READY); 1131 } 1132 1133 switch (val) { 1134 case XTR_ABORT: 1135 return -EIO; 1136 case XTR_EOF_0: 1137 case XTR_EOF_1: 1138 case XTR_EOF_2: 1139 case XTR_EOF_3: 1140 case XTR_PRUNED: 1141 bytes_valid = XTR_VALID_BYTES(val); 1142 val = ocelot_read_rix(ocelot, QS_XTR_RD, grp); 1143 if (val == XTR_ESCAPE) 1144 *rval = ocelot_read_rix(ocelot, QS_XTR_RD, grp); 1145 else 1146 *rval = val; 1147 1148 return bytes_valid; 1149 case XTR_ESCAPE: 1150 *rval = ocelot_read_rix(ocelot, QS_XTR_RD, grp); 1151 1152 return 4; 1153 default: 1154 *rval = val; 1155 1156 return 4; 1157 } 1158 } 1159 1160 static int ocelot_xtr_poll_xfh(struct ocelot *ocelot, int grp, u32 *xfh) 1161 { 1162 int i, err = 0; 1163 1164 for (i = 0; i < OCELOT_TAG_LEN / 4; i++) { 1165 err = ocelot_rx_frame_word(ocelot, grp, true, &xfh[i]); 1166 if (err != 4) 1167 return (err < 0) ? err : -EIO; 1168 } 1169 1170 return 0; 1171 } 1172 1173 void ocelot_ptp_rx_timestamp(struct ocelot *ocelot, struct sk_buff *skb, 1174 u64 timestamp) 1175 { 1176 struct skb_shared_hwtstamps *shhwtstamps; 1177 u64 tod_in_ns, full_ts_in_ns; 1178 struct timespec64 ts; 1179 1180 ocelot_ptp_gettime64(&ocelot->ptp_info, &ts); 1181 1182 tod_in_ns = ktime_set(ts.tv_sec, ts.tv_nsec); 1183 if ((tod_in_ns & 0xffffffff) < timestamp) 1184 full_ts_in_ns = (((tod_in_ns >> 32) - 1) << 32) | 1185 timestamp; 1186 else 1187 full_ts_in_ns = (tod_in_ns & GENMASK_ULL(63, 32)) | 1188 timestamp; 1189 1190 shhwtstamps = skb_hwtstamps(skb); 1191 memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps)); 1192 shhwtstamps->hwtstamp = full_ts_in_ns; 1193 } 1194 EXPORT_SYMBOL(ocelot_ptp_rx_timestamp); 1195 1196 int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **nskb) 1197 { 1198 u64 timestamp, src_port, len; 1199 u32 xfh[OCELOT_TAG_LEN / 4]; 1200 struct net_device *dev; 1201 struct sk_buff *skb; 1202 int sz, buf_len; 1203 u32 val, *buf; 1204 int err; 1205 1206 err = ocelot_xtr_poll_xfh(ocelot, grp, xfh); 1207 if (err) 1208 return err; 1209 1210 ocelot_xfh_get_src_port(xfh, &src_port); 1211 ocelot_xfh_get_len(xfh, &len); 1212 ocelot_xfh_get_rew_val(xfh, ×tamp); 1213 1214 if (WARN_ON(src_port >= ocelot->num_phys_ports)) 1215 return -EINVAL; 1216 1217 dev = ocelot->ops->port_to_netdev(ocelot, src_port); 1218 if (!dev) 1219 return -EINVAL; 1220 1221 skb = netdev_alloc_skb(dev, len); 1222 if (unlikely(!skb)) { 1223 netdev_err(dev, "Unable to allocate sk_buff\n"); 1224 return -ENOMEM; 1225 } 1226 1227 buf_len = len - ETH_FCS_LEN; 1228 buf = (u32 *)skb_put(skb, buf_len); 1229 1230 len = 0; 1231 do { 1232 sz = ocelot_rx_frame_word(ocelot, grp, false, &val); 1233 if (sz < 0) { 1234 err = sz; 1235 goto out_free_skb; 1236 } 1237 *buf++ = val; 1238 len += sz; 1239 } while (len < buf_len); 1240 1241 /* Read the FCS */ 1242 sz = ocelot_rx_frame_word(ocelot, grp, false, &val); 1243 if (sz < 0) { 1244 err = sz; 1245 goto out_free_skb; 1246 } 1247 1248 /* Update the statistics if part of the FCS was read before */ 1249 len -= ETH_FCS_LEN - sz; 1250 1251 if (unlikely(dev->features & NETIF_F_RXFCS)) { 1252 buf = (u32 *)skb_put(skb, ETH_FCS_LEN); 1253 *buf = val; 1254 } 1255 1256 if (ocelot->ptp) 1257 ocelot_ptp_rx_timestamp(ocelot, skb, timestamp); 1258 1259 /* Everything we see on an interface that is in the HW bridge 1260 * has already been forwarded. 1261 */ 1262 if (ocelot->ports[src_port]->bridge) 1263 skb->offload_fwd_mark = 1; 1264 1265 skb->protocol = eth_type_trans(skb, dev); 1266 1267 *nskb = skb; 1268 1269 return 0; 1270 1271 out_free_skb: 1272 kfree_skb(skb); 1273 return err; 1274 } 1275 EXPORT_SYMBOL(ocelot_xtr_poll_frame); 1276 1277 bool ocelot_can_inject(struct ocelot *ocelot, int grp) 1278 { 1279 u32 val = ocelot_read(ocelot, QS_INJ_STATUS); 1280 1281 if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp)))) 1282 return false; 1283 if (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp))) 1284 return false; 1285 1286 return true; 1287 } 1288 EXPORT_SYMBOL(ocelot_can_inject); 1289 1290 void ocelot_ifh_port_set(void *ifh, int port, u32 rew_op, u32 vlan_tag) 1291 { 1292 ocelot_ifh_set_bypass(ifh, 1); 1293 ocelot_ifh_set_dest(ifh, BIT_ULL(port)); 1294 ocelot_ifh_set_tag_type(ifh, IFH_TAG_TYPE_C); 1295 if (vlan_tag) 1296 ocelot_ifh_set_vlan_tci(ifh, vlan_tag); 1297 if (rew_op) 1298 ocelot_ifh_set_rew_op(ifh, rew_op); 1299 } 1300 EXPORT_SYMBOL(ocelot_ifh_port_set); 1301 1302 void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp, 1303 u32 rew_op, struct sk_buff *skb) 1304 { 1305 u32 ifh[OCELOT_TAG_LEN / 4] = {0}; 1306 unsigned int i, count, last; 1307 1308 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 1309 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp); 1310 1311 ocelot_ifh_port_set(ifh, port, rew_op, skb_vlan_tag_get(skb)); 1312 1313 for (i = 0; i < OCELOT_TAG_LEN / 4; i++) 1314 ocelot_write_rix(ocelot, ifh[i], QS_INJ_WR, grp); 1315 1316 count = DIV_ROUND_UP(skb->len, 4); 1317 last = skb->len % 4; 1318 for (i = 0; i < count; i++) 1319 ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp); 1320 1321 /* Add padding */ 1322 while (i < (OCELOT_BUFFER_CELL_SZ / 4)) { 1323 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 1324 i++; 1325 } 1326 1327 /* Indicate EOF and valid bytes in last word */ 1328 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 1329 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) | 1330 QS_INJ_CTRL_EOF, 1331 QS_INJ_CTRL, grp); 1332 1333 /* Add dummy CRC */ 1334 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 1335 skb_tx_timestamp(skb); 1336 1337 skb->dev->stats.tx_packets++; 1338 skb->dev->stats.tx_bytes += skb->len; 1339 } 1340 EXPORT_SYMBOL(ocelot_port_inject_frame); 1341 1342 void ocelot_drain_cpu_queue(struct ocelot *ocelot, int grp) 1343 { 1344 while (ocelot_read(ocelot, QS_XTR_DATA_PRESENT) & BIT(grp)) 1345 ocelot_read_rix(ocelot, QS_XTR_RD, grp); 1346 } 1347 EXPORT_SYMBOL(ocelot_drain_cpu_queue); 1348 1349 int ocelot_fdb_add(struct ocelot *ocelot, int port, const unsigned char *addr, 1350 u16 vid, const struct net_device *bridge) 1351 { 1352 if (!vid) 1353 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 1354 1355 return ocelot_mact_learn(ocelot, port, addr, vid, ENTRYTYPE_LOCKED); 1356 } 1357 EXPORT_SYMBOL(ocelot_fdb_add); 1358 1359 int ocelot_fdb_del(struct ocelot *ocelot, int port, const unsigned char *addr, 1360 u16 vid, const struct net_device *bridge) 1361 { 1362 if (!vid) 1363 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 1364 1365 return ocelot_mact_forget(ocelot, addr, vid); 1366 } 1367 EXPORT_SYMBOL(ocelot_fdb_del); 1368 1369 int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid, 1370 bool is_static, void *data) 1371 { 1372 struct ocelot_dump_ctx *dump = data; 1373 u32 portid = NETLINK_CB(dump->cb->skb).portid; 1374 u32 seq = dump->cb->nlh->nlmsg_seq; 1375 struct nlmsghdr *nlh; 1376 struct ndmsg *ndm; 1377 1378 if (dump->idx < dump->cb->args[2]) 1379 goto skip; 1380 1381 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, 1382 sizeof(*ndm), NLM_F_MULTI); 1383 if (!nlh) 1384 return -EMSGSIZE; 1385 1386 ndm = nlmsg_data(nlh); 1387 ndm->ndm_family = AF_BRIDGE; 1388 ndm->ndm_pad1 = 0; 1389 ndm->ndm_pad2 = 0; 1390 ndm->ndm_flags = NTF_SELF; 1391 ndm->ndm_type = 0; 1392 ndm->ndm_ifindex = dump->dev->ifindex; 1393 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; 1394 1395 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr)) 1396 goto nla_put_failure; 1397 1398 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid)) 1399 goto nla_put_failure; 1400 1401 nlmsg_end(dump->skb, nlh); 1402 1403 skip: 1404 dump->idx++; 1405 return 0; 1406 1407 nla_put_failure: 1408 nlmsg_cancel(dump->skb, nlh); 1409 return -EMSGSIZE; 1410 } 1411 EXPORT_SYMBOL(ocelot_port_fdb_do_dump); 1412 1413 /* Caller must hold &ocelot->mact_lock */ 1414 static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col, 1415 struct ocelot_mact_entry *entry) 1416 { 1417 u32 val, dst, macl, mach; 1418 char mac[ETH_ALEN]; 1419 1420 /* Set row and column to read from */ 1421 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row); 1422 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col); 1423 1424 /* Issue a read command */ 1425 ocelot_write(ocelot, 1426 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ), 1427 ANA_TABLES_MACACCESS); 1428 1429 if (ocelot_mact_wait_for_completion(ocelot)) 1430 return -ETIMEDOUT; 1431 1432 /* Read the entry flags */ 1433 val = ocelot_read(ocelot, ANA_TABLES_MACACCESS); 1434 if (!(val & ANA_TABLES_MACACCESS_VALID)) 1435 return -EINVAL; 1436 1437 /* If the entry read has another port configured as its destination, 1438 * do not report it. 1439 */ 1440 dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3; 1441 if (dst != port) 1442 return -EINVAL; 1443 1444 /* Get the entry's MAC address and VLAN id */ 1445 macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA); 1446 mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA); 1447 1448 mac[0] = (mach >> 8) & 0xff; 1449 mac[1] = (mach >> 0) & 0xff; 1450 mac[2] = (macl >> 24) & 0xff; 1451 mac[3] = (macl >> 16) & 0xff; 1452 mac[4] = (macl >> 8) & 0xff; 1453 mac[5] = (macl >> 0) & 0xff; 1454 1455 entry->vid = (mach >> 16) & 0xfff; 1456 ether_addr_copy(entry->mac, mac); 1457 1458 return 0; 1459 } 1460 1461 int ocelot_mact_flush(struct ocelot *ocelot, int port) 1462 { 1463 int err; 1464 1465 mutex_lock(&ocelot->mact_lock); 1466 1467 /* Program ageing filter for a single port */ 1468 ocelot_write(ocelot, ANA_ANAGEFIL_PID_EN | ANA_ANAGEFIL_PID_VAL(port), 1469 ANA_ANAGEFIL); 1470 1471 /* Flushing dynamic FDB entries requires two successive age scans */ 1472 ocelot_write(ocelot, 1473 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_AGE), 1474 ANA_TABLES_MACACCESS); 1475 1476 err = ocelot_mact_wait_for_completion(ocelot); 1477 if (err) { 1478 mutex_unlock(&ocelot->mact_lock); 1479 return err; 1480 } 1481 1482 /* And second... */ 1483 ocelot_write(ocelot, 1484 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_AGE), 1485 ANA_TABLES_MACACCESS); 1486 1487 err = ocelot_mact_wait_for_completion(ocelot); 1488 1489 /* Restore ageing filter */ 1490 ocelot_write(ocelot, 0, ANA_ANAGEFIL); 1491 1492 mutex_unlock(&ocelot->mact_lock); 1493 1494 return err; 1495 } 1496 EXPORT_SYMBOL_GPL(ocelot_mact_flush); 1497 1498 int ocelot_fdb_dump(struct ocelot *ocelot, int port, 1499 dsa_fdb_dump_cb_t *cb, void *data) 1500 { 1501 int err = 0; 1502 int i, j; 1503 1504 /* We could take the lock just around ocelot_mact_read, but doing so 1505 * thousands of times in a row seems rather pointless and inefficient. 1506 */ 1507 mutex_lock(&ocelot->mact_lock); 1508 1509 /* Loop through all the mac tables entries. */ 1510 for (i = 0; i < ocelot->num_mact_rows; i++) { 1511 for (j = 0; j < 4; j++) { 1512 struct ocelot_mact_entry entry; 1513 bool is_static; 1514 1515 err = ocelot_mact_read(ocelot, port, i, j, &entry); 1516 /* If the entry is invalid (wrong port, invalid...), 1517 * skip it. 1518 */ 1519 if (err == -EINVAL) 1520 continue; 1521 else if (err) 1522 break; 1523 1524 is_static = (entry.type == ENTRYTYPE_LOCKED); 1525 1526 /* Hide the reserved VLANs used for 1527 * VLAN-unaware bridging. 1528 */ 1529 if (entry.vid > OCELOT_RSV_VLAN_RANGE_START) 1530 entry.vid = 0; 1531 1532 err = cb(entry.mac, entry.vid, is_static, data); 1533 if (err) 1534 break; 1535 } 1536 } 1537 1538 mutex_unlock(&ocelot->mact_lock); 1539 1540 return err; 1541 } 1542 EXPORT_SYMBOL(ocelot_fdb_dump); 1543 1544 static void ocelot_populate_l2_ptp_trap_key(struct ocelot_vcap_filter *trap) 1545 { 1546 trap->key_type = OCELOT_VCAP_KEY_ETYPE; 1547 *(__be16 *)trap->key.etype.etype.value = htons(ETH_P_1588); 1548 *(__be16 *)trap->key.etype.etype.mask = htons(0xffff); 1549 } 1550 1551 static void 1552 ocelot_populate_ipv4_ptp_event_trap_key(struct ocelot_vcap_filter *trap) 1553 { 1554 trap->key_type = OCELOT_VCAP_KEY_IPV4; 1555 trap->key.ipv4.proto.value[0] = IPPROTO_UDP; 1556 trap->key.ipv4.proto.mask[0] = 0xff; 1557 trap->key.ipv4.dport.value = PTP_EV_PORT; 1558 trap->key.ipv4.dport.mask = 0xffff; 1559 } 1560 1561 static void 1562 ocelot_populate_ipv6_ptp_event_trap_key(struct ocelot_vcap_filter *trap) 1563 { 1564 trap->key_type = OCELOT_VCAP_KEY_IPV6; 1565 trap->key.ipv4.proto.value[0] = IPPROTO_UDP; 1566 trap->key.ipv4.proto.mask[0] = 0xff; 1567 trap->key.ipv6.dport.value = PTP_EV_PORT; 1568 trap->key.ipv6.dport.mask = 0xffff; 1569 } 1570 1571 static void 1572 ocelot_populate_ipv4_ptp_general_trap_key(struct ocelot_vcap_filter *trap) 1573 { 1574 trap->key_type = OCELOT_VCAP_KEY_IPV4; 1575 trap->key.ipv4.proto.value[0] = IPPROTO_UDP; 1576 trap->key.ipv4.proto.mask[0] = 0xff; 1577 trap->key.ipv4.dport.value = PTP_GEN_PORT; 1578 trap->key.ipv4.dport.mask = 0xffff; 1579 } 1580 1581 static void 1582 ocelot_populate_ipv6_ptp_general_trap_key(struct ocelot_vcap_filter *trap) 1583 { 1584 trap->key_type = OCELOT_VCAP_KEY_IPV6; 1585 trap->key.ipv4.proto.value[0] = IPPROTO_UDP; 1586 trap->key.ipv4.proto.mask[0] = 0xff; 1587 trap->key.ipv6.dport.value = PTP_GEN_PORT; 1588 trap->key.ipv6.dport.mask = 0xffff; 1589 } 1590 1591 int ocelot_trap_add(struct ocelot *ocelot, int port, 1592 unsigned long cookie, bool take_ts, 1593 void (*populate)(struct ocelot_vcap_filter *f)) 1594 { 1595 struct ocelot_vcap_block *block_vcap_is2; 1596 struct ocelot_vcap_filter *trap; 1597 bool new = false; 1598 int err; 1599 1600 block_vcap_is2 = &ocelot->block[VCAP_IS2]; 1601 1602 trap = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, cookie, 1603 false); 1604 if (!trap) { 1605 trap = kzalloc(sizeof(*trap), GFP_KERNEL); 1606 if (!trap) 1607 return -ENOMEM; 1608 1609 populate(trap); 1610 trap->prio = 1; 1611 trap->id.cookie = cookie; 1612 trap->id.tc_offload = false; 1613 trap->block_id = VCAP_IS2; 1614 trap->type = OCELOT_VCAP_FILTER_OFFLOAD; 1615 trap->lookup = 0; 1616 trap->action.cpu_copy_ena = true; 1617 trap->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY; 1618 trap->action.port_mask = 0; 1619 trap->take_ts = take_ts; 1620 trap->is_trap = true; 1621 new = true; 1622 } 1623 1624 trap->ingress_port_mask |= BIT(port); 1625 1626 if (new) 1627 err = ocelot_vcap_filter_add(ocelot, trap, NULL); 1628 else 1629 err = ocelot_vcap_filter_replace(ocelot, trap); 1630 if (err) { 1631 trap->ingress_port_mask &= ~BIT(port); 1632 if (!trap->ingress_port_mask) 1633 kfree(trap); 1634 return err; 1635 } 1636 1637 return 0; 1638 } 1639 1640 int ocelot_trap_del(struct ocelot *ocelot, int port, unsigned long cookie) 1641 { 1642 struct ocelot_vcap_block *block_vcap_is2; 1643 struct ocelot_vcap_filter *trap; 1644 1645 block_vcap_is2 = &ocelot->block[VCAP_IS2]; 1646 1647 trap = ocelot_vcap_block_find_filter_by_id(block_vcap_is2, cookie, 1648 false); 1649 if (!trap) 1650 return 0; 1651 1652 trap->ingress_port_mask &= ~BIT(port); 1653 if (!trap->ingress_port_mask) 1654 return ocelot_vcap_filter_del(ocelot, trap); 1655 1656 return ocelot_vcap_filter_replace(ocelot, trap); 1657 } 1658 1659 static int ocelot_l2_ptp_trap_add(struct ocelot *ocelot, int port) 1660 { 1661 unsigned long l2_cookie = OCELOT_VCAP_IS2_L2_PTP_TRAP(ocelot); 1662 1663 return ocelot_trap_add(ocelot, port, l2_cookie, true, 1664 ocelot_populate_l2_ptp_trap_key); 1665 } 1666 1667 static int ocelot_l2_ptp_trap_del(struct ocelot *ocelot, int port) 1668 { 1669 unsigned long l2_cookie = OCELOT_VCAP_IS2_L2_PTP_TRAP(ocelot); 1670 1671 return ocelot_trap_del(ocelot, port, l2_cookie); 1672 } 1673 1674 static int ocelot_ipv4_ptp_trap_add(struct ocelot *ocelot, int port) 1675 { 1676 unsigned long ipv4_gen_cookie = OCELOT_VCAP_IS2_IPV4_GEN_PTP_TRAP(ocelot); 1677 unsigned long ipv4_ev_cookie = OCELOT_VCAP_IS2_IPV4_EV_PTP_TRAP(ocelot); 1678 int err; 1679 1680 err = ocelot_trap_add(ocelot, port, ipv4_ev_cookie, true, 1681 ocelot_populate_ipv4_ptp_event_trap_key); 1682 if (err) 1683 return err; 1684 1685 err = ocelot_trap_add(ocelot, port, ipv4_gen_cookie, false, 1686 ocelot_populate_ipv4_ptp_general_trap_key); 1687 if (err) 1688 ocelot_trap_del(ocelot, port, ipv4_ev_cookie); 1689 1690 return err; 1691 } 1692 1693 static int ocelot_ipv4_ptp_trap_del(struct ocelot *ocelot, int port) 1694 { 1695 unsigned long ipv4_gen_cookie = OCELOT_VCAP_IS2_IPV4_GEN_PTP_TRAP(ocelot); 1696 unsigned long ipv4_ev_cookie = OCELOT_VCAP_IS2_IPV4_EV_PTP_TRAP(ocelot); 1697 int err; 1698 1699 err = ocelot_trap_del(ocelot, port, ipv4_ev_cookie); 1700 err |= ocelot_trap_del(ocelot, port, ipv4_gen_cookie); 1701 return err; 1702 } 1703 1704 static int ocelot_ipv6_ptp_trap_add(struct ocelot *ocelot, int port) 1705 { 1706 unsigned long ipv6_gen_cookie = OCELOT_VCAP_IS2_IPV6_GEN_PTP_TRAP(ocelot); 1707 unsigned long ipv6_ev_cookie = OCELOT_VCAP_IS2_IPV6_EV_PTP_TRAP(ocelot); 1708 int err; 1709 1710 err = ocelot_trap_add(ocelot, port, ipv6_ev_cookie, true, 1711 ocelot_populate_ipv6_ptp_event_trap_key); 1712 if (err) 1713 return err; 1714 1715 err = ocelot_trap_add(ocelot, port, ipv6_gen_cookie, false, 1716 ocelot_populate_ipv6_ptp_general_trap_key); 1717 if (err) 1718 ocelot_trap_del(ocelot, port, ipv6_ev_cookie); 1719 1720 return err; 1721 } 1722 1723 static int ocelot_ipv6_ptp_trap_del(struct ocelot *ocelot, int port) 1724 { 1725 unsigned long ipv6_gen_cookie = OCELOT_VCAP_IS2_IPV6_GEN_PTP_TRAP(ocelot); 1726 unsigned long ipv6_ev_cookie = OCELOT_VCAP_IS2_IPV6_EV_PTP_TRAP(ocelot); 1727 int err; 1728 1729 err = ocelot_trap_del(ocelot, port, ipv6_ev_cookie); 1730 err |= ocelot_trap_del(ocelot, port, ipv6_gen_cookie); 1731 return err; 1732 } 1733 1734 static int ocelot_setup_ptp_traps(struct ocelot *ocelot, int port, 1735 bool l2, bool l4) 1736 { 1737 int err; 1738 1739 if (l2) 1740 err = ocelot_l2_ptp_trap_add(ocelot, port); 1741 else 1742 err = ocelot_l2_ptp_trap_del(ocelot, port); 1743 if (err) 1744 return err; 1745 1746 if (l4) { 1747 err = ocelot_ipv4_ptp_trap_add(ocelot, port); 1748 if (err) 1749 goto err_ipv4; 1750 1751 err = ocelot_ipv6_ptp_trap_add(ocelot, port); 1752 if (err) 1753 goto err_ipv6; 1754 } else { 1755 err = ocelot_ipv4_ptp_trap_del(ocelot, port); 1756 1757 err |= ocelot_ipv6_ptp_trap_del(ocelot, port); 1758 } 1759 if (err) 1760 return err; 1761 1762 return 0; 1763 1764 err_ipv6: 1765 ocelot_ipv4_ptp_trap_del(ocelot, port); 1766 err_ipv4: 1767 if (l2) 1768 ocelot_l2_ptp_trap_del(ocelot, port); 1769 return err; 1770 } 1771 1772 int ocelot_hwstamp_get(struct ocelot *ocelot, int port, struct ifreq *ifr) 1773 { 1774 return copy_to_user(ifr->ifr_data, &ocelot->hwtstamp_config, 1775 sizeof(ocelot->hwtstamp_config)) ? -EFAULT : 0; 1776 } 1777 EXPORT_SYMBOL(ocelot_hwstamp_get); 1778 1779 int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr) 1780 { 1781 struct ocelot_port *ocelot_port = ocelot->ports[port]; 1782 bool l2 = false, l4 = false; 1783 struct hwtstamp_config cfg; 1784 int err; 1785 1786 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) 1787 return -EFAULT; 1788 1789 /* Tx type sanity check */ 1790 switch (cfg.tx_type) { 1791 case HWTSTAMP_TX_ON: 1792 ocelot_port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP; 1793 break; 1794 case HWTSTAMP_TX_ONESTEP_SYNC: 1795 /* IFH_REW_OP_ONE_STEP_PTP updates the correctional field, we 1796 * need to update the origin time. 1797 */ 1798 ocelot_port->ptp_cmd = IFH_REW_OP_ORIGIN_PTP; 1799 break; 1800 case HWTSTAMP_TX_OFF: 1801 ocelot_port->ptp_cmd = 0; 1802 break; 1803 default: 1804 return -ERANGE; 1805 } 1806 1807 mutex_lock(&ocelot->ptp_lock); 1808 1809 switch (cfg.rx_filter) { 1810 case HWTSTAMP_FILTER_NONE: 1811 break; 1812 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 1813 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 1814 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 1815 l4 = true; 1816 break; 1817 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 1818 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 1819 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 1820 l2 = true; 1821 break; 1822 case HWTSTAMP_FILTER_PTP_V2_EVENT: 1823 case HWTSTAMP_FILTER_PTP_V2_SYNC: 1824 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 1825 l2 = true; 1826 l4 = true; 1827 break; 1828 default: 1829 mutex_unlock(&ocelot->ptp_lock); 1830 return -ERANGE; 1831 } 1832 1833 err = ocelot_setup_ptp_traps(ocelot, port, l2, l4); 1834 if (err) { 1835 mutex_unlock(&ocelot->ptp_lock); 1836 return err; 1837 } 1838 1839 if (l2 && l4) 1840 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; 1841 else if (l2) 1842 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT; 1843 else if (l4) 1844 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; 1845 else 1846 cfg.rx_filter = HWTSTAMP_FILTER_NONE; 1847 1848 /* Commit back the result & save it */ 1849 memcpy(&ocelot->hwtstamp_config, &cfg, sizeof(cfg)); 1850 mutex_unlock(&ocelot->ptp_lock); 1851 1852 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; 1853 } 1854 EXPORT_SYMBOL(ocelot_hwstamp_set); 1855 1856 void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data) 1857 { 1858 int i; 1859 1860 if (sset != ETH_SS_STATS) 1861 return; 1862 1863 for (i = 0; i < OCELOT_NUM_STATS; i++) { 1864 if (ocelot->stats_layout[i].name[0] == '\0') 1865 continue; 1866 1867 memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name, 1868 ETH_GSTRING_LEN); 1869 } 1870 } 1871 EXPORT_SYMBOL(ocelot_get_strings); 1872 1873 /* Caller must hold &ocelot->stats_lock */ 1874 static int ocelot_port_update_stats(struct ocelot *ocelot, int port) 1875 { 1876 unsigned int idx = port * OCELOT_NUM_STATS; 1877 struct ocelot_stats_region *region; 1878 int err, j; 1879 1880 /* Configure the port to read the stats from */ 1881 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port), SYS_STAT_CFG); 1882 1883 list_for_each_entry(region, &ocelot->stats_regions, node) { 1884 err = ocelot_bulk_read(ocelot, region->base, region->buf, 1885 region->count); 1886 if (err) 1887 return err; 1888 1889 for (j = 0; j < region->count; j++) { 1890 u64 *stat = &ocelot->stats[idx + j]; 1891 u64 val = region->buf[j]; 1892 1893 if (val < (*stat & U32_MAX)) 1894 *stat += (u64)1 << 32; 1895 1896 *stat = (*stat & ~(u64)U32_MAX) + val; 1897 } 1898 1899 idx += region->count; 1900 } 1901 1902 return err; 1903 } 1904 1905 static void ocelot_check_stats_work(struct work_struct *work) 1906 { 1907 struct delayed_work *del_work = to_delayed_work(work); 1908 struct ocelot *ocelot = container_of(del_work, struct ocelot, 1909 stats_work); 1910 int i, err; 1911 1912 spin_lock(&ocelot->stats_lock); 1913 for (i = 0; i < ocelot->num_phys_ports; i++) { 1914 err = ocelot_port_update_stats(ocelot, i); 1915 if (err) 1916 break; 1917 } 1918 spin_unlock(&ocelot->stats_lock); 1919 1920 if (err) 1921 dev_err(ocelot->dev, "Error %d updating ethtool stats\n", err); 1922 1923 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work, 1924 OCELOT_STATS_CHECK_DELAY); 1925 } 1926 1927 void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data) 1928 { 1929 int i, err; 1930 1931 spin_lock(&ocelot->stats_lock); 1932 1933 /* check and update now */ 1934 err = ocelot_port_update_stats(ocelot, port); 1935 1936 /* Copy all supported counters */ 1937 for (i = 0; i < OCELOT_NUM_STATS; i++) { 1938 int index = port * OCELOT_NUM_STATS + i; 1939 1940 if (ocelot->stats_layout[i].name[0] == '\0') 1941 continue; 1942 1943 *data++ = ocelot->stats[index]; 1944 } 1945 1946 spin_unlock(&ocelot->stats_lock); 1947 1948 if (err) 1949 dev_err(ocelot->dev, "Error %d updating ethtool stats\n", err); 1950 } 1951 EXPORT_SYMBOL(ocelot_get_ethtool_stats); 1952 1953 int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset) 1954 { 1955 int i, num_stats = 0; 1956 1957 if (sset != ETH_SS_STATS) 1958 return -EOPNOTSUPP; 1959 1960 for (i = 0; i < OCELOT_NUM_STATS; i++) 1961 if (ocelot->stats_layout[i].name[0] != '\0') 1962 num_stats++; 1963 1964 return num_stats; 1965 } 1966 EXPORT_SYMBOL(ocelot_get_sset_count); 1967 1968 static int ocelot_prepare_stats_regions(struct ocelot *ocelot) 1969 { 1970 struct ocelot_stats_region *region = NULL; 1971 unsigned int last; 1972 int i; 1973 1974 INIT_LIST_HEAD(&ocelot->stats_regions); 1975 1976 for (i = 0; i < OCELOT_NUM_STATS; i++) { 1977 if (ocelot->stats_layout[i].name[0] == '\0') 1978 continue; 1979 1980 if (region && ocelot->stats_layout[i].reg == last + 4) { 1981 region->count++; 1982 } else { 1983 region = devm_kzalloc(ocelot->dev, sizeof(*region), 1984 GFP_KERNEL); 1985 if (!region) 1986 return -ENOMEM; 1987 1988 region->base = ocelot->stats_layout[i].reg; 1989 region->count = 1; 1990 list_add_tail(®ion->node, &ocelot->stats_regions); 1991 } 1992 1993 last = ocelot->stats_layout[i].reg; 1994 } 1995 1996 list_for_each_entry(region, &ocelot->stats_regions, node) { 1997 region->buf = devm_kcalloc(ocelot->dev, region->count, 1998 sizeof(*region->buf), GFP_KERNEL); 1999 if (!region->buf) 2000 return -ENOMEM; 2001 } 2002 2003 return 0; 2004 } 2005 2006 int ocelot_get_ts_info(struct ocelot *ocelot, int port, 2007 struct ethtool_ts_info *info) 2008 { 2009 info->phc_index = ocelot->ptp_clock ? 2010 ptp_clock_index(ocelot->ptp_clock) : -1; 2011 if (info->phc_index == -1) { 2012 info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE | 2013 SOF_TIMESTAMPING_RX_SOFTWARE | 2014 SOF_TIMESTAMPING_SOFTWARE; 2015 return 0; 2016 } 2017 info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE | 2018 SOF_TIMESTAMPING_RX_SOFTWARE | 2019 SOF_TIMESTAMPING_SOFTWARE | 2020 SOF_TIMESTAMPING_TX_HARDWARE | 2021 SOF_TIMESTAMPING_RX_HARDWARE | 2022 SOF_TIMESTAMPING_RAW_HARDWARE; 2023 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON) | 2024 BIT(HWTSTAMP_TX_ONESTEP_SYNC); 2025 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | 2026 BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) | 2027 BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | 2028 BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT); 2029 2030 return 0; 2031 } 2032 EXPORT_SYMBOL(ocelot_get_ts_info); 2033 2034 static u32 ocelot_get_bond_mask(struct ocelot *ocelot, struct net_device *bond) 2035 { 2036 u32 mask = 0; 2037 int port; 2038 2039 lockdep_assert_held(&ocelot->fwd_domain_lock); 2040 2041 for (port = 0; port < ocelot->num_phys_ports; port++) { 2042 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2043 2044 if (!ocelot_port) 2045 continue; 2046 2047 if (ocelot_port->bond == bond) 2048 mask |= BIT(port); 2049 } 2050 2051 return mask; 2052 } 2053 2054 /* The logical port number of a LAG is equal to the lowest numbered physical 2055 * port ID present in that LAG. It may change if that port ever leaves the LAG. 2056 */ 2057 static int ocelot_bond_get_id(struct ocelot *ocelot, struct net_device *bond) 2058 { 2059 int bond_mask = ocelot_get_bond_mask(ocelot, bond); 2060 2061 if (!bond_mask) 2062 return -ENOENT; 2063 2064 return __ffs(bond_mask); 2065 } 2066 2067 static u32 ocelot_dsa_8021q_cpu_assigned_ports(struct ocelot *ocelot, 2068 struct ocelot_port *cpu) 2069 { 2070 u32 mask = 0; 2071 int port; 2072 2073 for (port = 0; port < ocelot->num_phys_ports; port++) { 2074 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2075 2076 if (!ocelot_port) 2077 continue; 2078 2079 if (ocelot_port->dsa_8021q_cpu == cpu) 2080 mask |= BIT(port); 2081 } 2082 2083 return mask; 2084 } 2085 2086 u32 ocelot_port_assigned_dsa_8021q_cpu_mask(struct ocelot *ocelot, int port) 2087 { 2088 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2089 struct ocelot_port *cpu_port = ocelot_port->dsa_8021q_cpu; 2090 2091 if (!cpu_port) 2092 return 0; 2093 2094 return BIT(cpu_port->index); 2095 } 2096 EXPORT_SYMBOL_GPL(ocelot_port_assigned_dsa_8021q_cpu_mask); 2097 2098 u32 ocelot_get_bridge_fwd_mask(struct ocelot *ocelot, int src_port) 2099 { 2100 struct ocelot_port *ocelot_port = ocelot->ports[src_port]; 2101 const struct net_device *bridge; 2102 u32 mask = 0; 2103 int port; 2104 2105 if (!ocelot_port || ocelot_port->stp_state != BR_STATE_FORWARDING) 2106 return 0; 2107 2108 bridge = ocelot_port->bridge; 2109 if (!bridge) 2110 return 0; 2111 2112 for (port = 0; port < ocelot->num_phys_ports; port++) { 2113 ocelot_port = ocelot->ports[port]; 2114 2115 if (!ocelot_port) 2116 continue; 2117 2118 if (ocelot_port->stp_state == BR_STATE_FORWARDING && 2119 ocelot_port->bridge == bridge) 2120 mask |= BIT(port); 2121 } 2122 2123 return mask; 2124 } 2125 EXPORT_SYMBOL_GPL(ocelot_get_bridge_fwd_mask); 2126 2127 static void ocelot_apply_bridge_fwd_mask(struct ocelot *ocelot, bool joining) 2128 { 2129 int port; 2130 2131 lockdep_assert_held(&ocelot->fwd_domain_lock); 2132 2133 /* If cut-through forwarding is supported, update the masks before a 2134 * port joins the forwarding domain, to avoid potential underruns if it 2135 * has the highest speed from the new domain. 2136 */ 2137 if (joining && ocelot->ops->cut_through_fwd) 2138 ocelot->ops->cut_through_fwd(ocelot); 2139 2140 /* Apply FWD mask. The loop is needed to add/remove the current port as 2141 * a source for the other ports. 2142 */ 2143 for (port = 0; port < ocelot->num_phys_ports; port++) { 2144 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2145 unsigned long mask; 2146 2147 if (!ocelot_port) { 2148 /* Unused ports can't send anywhere */ 2149 mask = 0; 2150 } else if (ocelot_port->is_dsa_8021q_cpu) { 2151 /* The DSA tag_8021q CPU ports need to be able to 2152 * forward packets to all ports assigned to them. 2153 */ 2154 mask = ocelot_dsa_8021q_cpu_assigned_ports(ocelot, 2155 ocelot_port); 2156 } else if (ocelot_port->bridge) { 2157 struct net_device *bond = ocelot_port->bond; 2158 2159 mask = ocelot_get_bridge_fwd_mask(ocelot, port); 2160 mask &= ~BIT(port); 2161 2162 mask |= ocelot_port_assigned_dsa_8021q_cpu_mask(ocelot, 2163 port); 2164 2165 if (bond) 2166 mask &= ~ocelot_get_bond_mask(ocelot, bond); 2167 } else { 2168 /* Standalone ports forward only to DSA tag_8021q CPU 2169 * ports (if those exist), or to the hardware CPU port 2170 * module otherwise. 2171 */ 2172 mask = ocelot_port_assigned_dsa_8021q_cpu_mask(ocelot, 2173 port); 2174 } 2175 2176 ocelot_write_rix(ocelot, mask, ANA_PGID_PGID, PGID_SRC + port); 2177 } 2178 2179 /* If cut-through forwarding is supported and a port is leaving, there 2180 * is a chance that cut-through was disabled on the other ports due to 2181 * the port which is leaving (it has a higher link speed). We need to 2182 * update the cut-through masks of the remaining ports no earlier than 2183 * after the port has left, to prevent underruns from happening between 2184 * the cut-through update and the forwarding domain update. 2185 */ 2186 if (!joining && ocelot->ops->cut_through_fwd) 2187 ocelot->ops->cut_through_fwd(ocelot); 2188 } 2189 2190 /* Update PGID_CPU which is the destination port mask used for whitelisting 2191 * unicast addresses filtered towards the host. In the normal and NPI modes, 2192 * this points to the analyzer entry for the CPU port module, while in DSA 2193 * tag_8021q mode, it is a bit mask of all active CPU ports. 2194 * PGID_SRC will take care of forwarding a packet from one user port to 2195 * no more than a single CPU port. 2196 */ 2197 static void ocelot_update_pgid_cpu(struct ocelot *ocelot) 2198 { 2199 int pgid_cpu = 0; 2200 int port; 2201 2202 for (port = 0; port < ocelot->num_phys_ports; port++) { 2203 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2204 2205 if (!ocelot_port || !ocelot_port->is_dsa_8021q_cpu) 2206 continue; 2207 2208 pgid_cpu |= BIT(port); 2209 } 2210 2211 if (!pgid_cpu) 2212 pgid_cpu = BIT(ocelot->num_phys_ports); 2213 2214 ocelot_write_rix(ocelot, pgid_cpu, ANA_PGID_PGID, PGID_CPU); 2215 } 2216 2217 void ocelot_port_assign_dsa_8021q_cpu(struct ocelot *ocelot, int port, 2218 int cpu) 2219 { 2220 struct ocelot_port *cpu_port = ocelot->ports[cpu]; 2221 u16 vid; 2222 2223 mutex_lock(&ocelot->fwd_domain_lock); 2224 2225 ocelot->ports[port]->dsa_8021q_cpu = cpu_port; 2226 2227 if (!cpu_port->is_dsa_8021q_cpu) { 2228 cpu_port->is_dsa_8021q_cpu = true; 2229 2230 for (vid = OCELOT_RSV_VLAN_RANGE_START; vid < VLAN_N_VID; vid++) 2231 ocelot_vlan_member_add(ocelot, cpu, vid, true); 2232 2233 ocelot_update_pgid_cpu(ocelot); 2234 } 2235 2236 ocelot_apply_bridge_fwd_mask(ocelot, true); 2237 2238 mutex_unlock(&ocelot->fwd_domain_lock); 2239 } 2240 EXPORT_SYMBOL_GPL(ocelot_port_assign_dsa_8021q_cpu); 2241 2242 void ocelot_port_unassign_dsa_8021q_cpu(struct ocelot *ocelot, int port) 2243 { 2244 struct ocelot_port *cpu_port = ocelot->ports[port]->dsa_8021q_cpu; 2245 bool keep = false; 2246 u16 vid; 2247 int p; 2248 2249 mutex_lock(&ocelot->fwd_domain_lock); 2250 2251 ocelot->ports[port]->dsa_8021q_cpu = NULL; 2252 2253 for (p = 0; p < ocelot->num_phys_ports; p++) { 2254 if (!ocelot->ports[p]) 2255 continue; 2256 2257 if (ocelot->ports[p]->dsa_8021q_cpu == cpu_port) { 2258 keep = true; 2259 break; 2260 } 2261 } 2262 2263 if (!keep) { 2264 cpu_port->is_dsa_8021q_cpu = false; 2265 2266 for (vid = OCELOT_RSV_VLAN_RANGE_START; vid < VLAN_N_VID; vid++) 2267 ocelot_vlan_member_del(ocelot, cpu_port->index, vid); 2268 2269 ocelot_update_pgid_cpu(ocelot); 2270 } 2271 2272 ocelot_apply_bridge_fwd_mask(ocelot, true); 2273 2274 mutex_unlock(&ocelot->fwd_domain_lock); 2275 } 2276 EXPORT_SYMBOL_GPL(ocelot_port_unassign_dsa_8021q_cpu); 2277 2278 void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state) 2279 { 2280 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2281 u32 learn_ena = 0; 2282 2283 mutex_lock(&ocelot->fwd_domain_lock); 2284 2285 ocelot_port->stp_state = state; 2286 2287 if ((state == BR_STATE_LEARNING || state == BR_STATE_FORWARDING) && 2288 ocelot_port->learn_ena) 2289 learn_ena = ANA_PORT_PORT_CFG_LEARN_ENA; 2290 2291 ocelot_rmw_gix(ocelot, learn_ena, ANA_PORT_PORT_CFG_LEARN_ENA, 2292 ANA_PORT_PORT_CFG, port); 2293 2294 ocelot_apply_bridge_fwd_mask(ocelot, state == BR_STATE_FORWARDING); 2295 2296 mutex_unlock(&ocelot->fwd_domain_lock); 2297 } 2298 EXPORT_SYMBOL(ocelot_bridge_stp_state_set); 2299 2300 void ocelot_set_ageing_time(struct ocelot *ocelot, unsigned int msecs) 2301 { 2302 unsigned int age_period = ANA_AUTOAGE_AGE_PERIOD(msecs / 2000); 2303 2304 /* Setting AGE_PERIOD to zero effectively disables automatic aging, 2305 * which is clearly not what our intention is. So avoid that. 2306 */ 2307 if (!age_period) 2308 age_period = 1; 2309 2310 ocelot_rmw(ocelot, age_period, ANA_AUTOAGE_AGE_PERIOD_M, ANA_AUTOAGE); 2311 } 2312 EXPORT_SYMBOL(ocelot_set_ageing_time); 2313 2314 static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot, 2315 const unsigned char *addr, 2316 u16 vid) 2317 { 2318 struct ocelot_multicast *mc; 2319 2320 list_for_each_entry(mc, &ocelot->multicast, list) { 2321 if (ether_addr_equal(mc->addr, addr) && mc->vid == vid) 2322 return mc; 2323 } 2324 2325 return NULL; 2326 } 2327 2328 static enum macaccess_entry_type ocelot_classify_mdb(const unsigned char *addr) 2329 { 2330 if (addr[0] == 0x01 && addr[1] == 0x00 && addr[2] == 0x5e) 2331 return ENTRYTYPE_MACv4; 2332 if (addr[0] == 0x33 && addr[1] == 0x33) 2333 return ENTRYTYPE_MACv6; 2334 return ENTRYTYPE_LOCKED; 2335 } 2336 2337 static struct ocelot_pgid *ocelot_pgid_alloc(struct ocelot *ocelot, int index, 2338 unsigned long ports) 2339 { 2340 struct ocelot_pgid *pgid; 2341 2342 pgid = kzalloc(sizeof(*pgid), GFP_KERNEL); 2343 if (!pgid) 2344 return ERR_PTR(-ENOMEM); 2345 2346 pgid->ports = ports; 2347 pgid->index = index; 2348 refcount_set(&pgid->refcount, 1); 2349 list_add_tail(&pgid->list, &ocelot->pgids); 2350 2351 return pgid; 2352 } 2353 2354 static void ocelot_pgid_free(struct ocelot *ocelot, struct ocelot_pgid *pgid) 2355 { 2356 if (!refcount_dec_and_test(&pgid->refcount)) 2357 return; 2358 2359 list_del(&pgid->list); 2360 kfree(pgid); 2361 } 2362 2363 static struct ocelot_pgid *ocelot_mdb_get_pgid(struct ocelot *ocelot, 2364 const struct ocelot_multicast *mc) 2365 { 2366 struct ocelot_pgid *pgid; 2367 int index; 2368 2369 /* According to VSC7514 datasheet 3.9.1.5 IPv4 Multicast Entries and 2370 * 3.9.1.6 IPv6 Multicast Entries, "Instead of a lookup in the 2371 * destination mask table (PGID), the destination set is programmed as 2372 * part of the entry MAC address.", and the DEST_IDX is set to 0. 2373 */ 2374 if (mc->entry_type == ENTRYTYPE_MACv4 || 2375 mc->entry_type == ENTRYTYPE_MACv6) 2376 return ocelot_pgid_alloc(ocelot, 0, mc->ports); 2377 2378 list_for_each_entry(pgid, &ocelot->pgids, list) { 2379 /* When searching for a nonreserved multicast PGID, ignore the 2380 * dummy PGID of zero that we have for MACv4/MACv6 entries 2381 */ 2382 if (pgid->index && pgid->ports == mc->ports) { 2383 refcount_inc(&pgid->refcount); 2384 return pgid; 2385 } 2386 } 2387 2388 /* Search for a free index in the nonreserved multicast PGID area */ 2389 for_each_nonreserved_multicast_dest_pgid(ocelot, index) { 2390 bool used = false; 2391 2392 list_for_each_entry(pgid, &ocelot->pgids, list) { 2393 if (pgid->index == index) { 2394 used = true; 2395 break; 2396 } 2397 } 2398 2399 if (!used) 2400 return ocelot_pgid_alloc(ocelot, index, mc->ports); 2401 } 2402 2403 return ERR_PTR(-ENOSPC); 2404 } 2405 2406 static void ocelot_encode_ports_to_mdb(unsigned char *addr, 2407 struct ocelot_multicast *mc) 2408 { 2409 ether_addr_copy(addr, mc->addr); 2410 2411 if (mc->entry_type == ENTRYTYPE_MACv4) { 2412 addr[0] = 0; 2413 addr[1] = mc->ports >> 8; 2414 addr[2] = mc->ports & 0xff; 2415 } else if (mc->entry_type == ENTRYTYPE_MACv6) { 2416 addr[0] = mc->ports >> 8; 2417 addr[1] = mc->ports & 0xff; 2418 } 2419 } 2420 2421 int ocelot_port_mdb_add(struct ocelot *ocelot, int port, 2422 const struct switchdev_obj_port_mdb *mdb, 2423 const struct net_device *bridge) 2424 { 2425 unsigned char addr[ETH_ALEN]; 2426 struct ocelot_multicast *mc; 2427 struct ocelot_pgid *pgid; 2428 u16 vid = mdb->vid; 2429 2430 if (!vid) 2431 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 2432 2433 mc = ocelot_multicast_get(ocelot, mdb->addr, vid); 2434 if (!mc) { 2435 /* New entry */ 2436 mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL); 2437 if (!mc) 2438 return -ENOMEM; 2439 2440 mc->entry_type = ocelot_classify_mdb(mdb->addr); 2441 ether_addr_copy(mc->addr, mdb->addr); 2442 mc->vid = vid; 2443 2444 list_add_tail(&mc->list, &ocelot->multicast); 2445 } else { 2446 /* Existing entry. Clean up the current port mask from 2447 * hardware now, because we'll be modifying it. 2448 */ 2449 ocelot_pgid_free(ocelot, mc->pgid); 2450 ocelot_encode_ports_to_mdb(addr, mc); 2451 ocelot_mact_forget(ocelot, addr, vid); 2452 } 2453 2454 mc->ports |= BIT(port); 2455 2456 pgid = ocelot_mdb_get_pgid(ocelot, mc); 2457 if (IS_ERR(pgid)) { 2458 dev_err(ocelot->dev, 2459 "Cannot allocate PGID for mdb %pM vid %d\n", 2460 mc->addr, mc->vid); 2461 devm_kfree(ocelot->dev, mc); 2462 return PTR_ERR(pgid); 2463 } 2464 mc->pgid = pgid; 2465 2466 ocelot_encode_ports_to_mdb(addr, mc); 2467 2468 if (mc->entry_type != ENTRYTYPE_MACv4 && 2469 mc->entry_type != ENTRYTYPE_MACv6) 2470 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID, 2471 pgid->index); 2472 2473 return ocelot_mact_learn(ocelot, pgid->index, addr, vid, 2474 mc->entry_type); 2475 } 2476 EXPORT_SYMBOL(ocelot_port_mdb_add); 2477 2478 int ocelot_port_mdb_del(struct ocelot *ocelot, int port, 2479 const struct switchdev_obj_port_mdb *mdb, 2480 const struct net_device *bridge) 2481 { 2482 unsigned char addr[ETH_ALEN]; 2483 struct ocelot_multicast *mc; 2484 struct ocelot_pgid *pgid; 2485 u16 vid = mdb->vid; 2486 2487 if (!vid) 2488 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 2489 2490 mc = ocelot_multicast_get(ocelot, mdb->addr, vid); 2491 if (!mc) 2492 return -ENOENT; 2493 2494 ocelot_encode_ports_to_mdb(addr, mc); 2495 ocelot_mact_forget(ocelot, addr, vid); 2496 2497 ocelot_pgid_free(ocelot, mc->pgid); 2498 mc->ports &= ~BIT(port); 2499 if (!mc->ports) { 2500 list_del(&mc->list); 2501 devm_kfree(ocelot->dev, mc); 2502 return 0; 2503 } 2504 2505 /* We have a PGID with fewer ports now */ 2506 pgid = ocelot_mdb_get_pgid(ocelot, mc); 2507 if (IS_ERR(pgid)) 2508 return PTR_ERR(pgid); 2509 mc->pgid = pgid; 2510 2511 ocelot_encode_ports_to_mdb(addr, mc); 2512 2513 if (mc->entry_type != ENTRYTYPE_MACv4 && 2514 mc->entry_type != ENTRYTYPE_MACv6) 2515 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID, 2516 pgid->index); 2517 2518 return ocelot_mact_learn(ocelot, pgid->index, addr, vid, 2519 mc->entry_type); 2520 } 2521 EXPORT_SYMBOL(ocelot_port_mdb_del); 2522 2523 int ocelot_port_bridge_join(struct ocelot *ocelot, int port, 2524 struct net_device *bridge, int bridge_num, 2525 struct netlink_ext_ack *extack) 2526 { 2527 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2528 int err; 2529 2530 err = ocelot_single_vlan_aware_bridge(ocelot, extack); 2531 if (err) 2532 return err; 2533 2534 mutex_lock(&ocelot->fwd_domain_lock); 2535 2536 ocelot_port->bridge = bridge; 2537 ocelot_port->bridge_num = bridge_num; 2538 2539 ocelot_apply_bridge_fwd_mask(ocelot, true); 2540 2541 mutex_unlock(&ocelot->fwd_domain_lock); 2542 2543 if (br_vlan_enabled(bridge)) 2544 return 0; 2545 2546 return ocelot_add_vlan_unaware_pvid(ocelot, port, bridge); 2547 } 2548 EXPORT_SYMBOL(ocelot_port_bridge_join); 2549 2550 void ocelot_port_bridge_leave(struct ocelot *ocelot, int port, 2551 struct net_device *bridge) 2552 { 2553 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2554 2555 mutex_lock(&ocelot->fwd_domain_lock); 2556 2557 if (!br_vlan_enabled(bridge)) 2558 ocelot_del_vlan_unaware_pvid(ocelot, port, bridge); 2559 2560 ocelot_port->bridge = NULL; 2561 ocelot_port->bridge_num = -1; 2562 2563 ocelot_port_set_pvid(ocelot, port, NULL); 2564 ocelot_port_manage_port_tag(ocelot, port); 2565 ocelot_apply_bridge_fwd_mask(ocelot, false); 2566 2567 mutex_unlock(&ocelot->fwd_domain_lock); 2568 } 2569 EXPORT_SYMBOL(ocelot_port_bridge_leave); 2570 2571 static void ocelot_set_aggr_pgids(struct ocelot *ocelot) 2572 { 2573 unsigned long visited = GENMASK(ocelot->num_phys_ports - 1, 0); 2574 int i, port, lag; 2575 2576 /* Reset destination and aggregation PGIDS */ 2577 for_each_unicast_dest_pgid(ocelot, port) 2578 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port); 2579 2580 for_each_aggr_pgid(ocelot, i) 2581 ocelot_write_rix(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0), 2582 ANA_PGID_PGID, i); 2583 2584 /* The visited ports bitmask holds the list of ports offloading any 2585 * bonding interface. Initially we mark all these ports as unvisited, 2586 * then every time we visit a port in this bitmask, we know that it is 2587 * the lowest numbered port, i.e. the one whose logical ID == physical 2588 * port ID == LAG ID. So we mark as visited all further ports in the 2589 * bitmask that are offloading the same bonding interface. This way, 2590 * we set up the aggregation PGIDs only once per bonding interface. 2591 */ 2592 for (port = 0; port < ocelot->num_phys_ports; port++) { 2593 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2594 2595 if (!ocelot_port || !ocelot_port->bond) 2596 continue; 2597 2598 visited &= ~BIT(port); 2599 } 2600 2601 /* Now, set PGIDs for each active LAG */ 2602 for (lag = 0; lag < ocelot->num_phys_ports; lag++) { 2603 struct net_device *bond = ocelot->ports[lag]->bond; 2604 int num_active_ports = 0; 2605 unsigned long bond_mask; 2606 u8 aggr_idx[16]; 2607 2608 if (!bond || (visited & BIT(lag))) 2609 continue; 2610 2611 bond_mask = ocelot_get_bond_mask(ocelot, bond); 2612 2613 for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) { 2614 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2615 2616 // Destination mask 2617 ocelot_write_rix(ocelot, bond_mask, 2618 ANA_PGID_PGID, port); 2619 2620 if (ocelot_port->lag_tx_active) 2621 aggr_idx[num_active_ports++] = port; 2622 } 2623 2624 for_each_aggr_pgid(ocelot, i) { 2625 u32 ac; 2626 2627 ac = ocelot_read_rix(ocelot, ANA_PGID_PGID, i); 2628 ac &= ~bond_mask; 2629 /* Don't do division by zero if there was no active 2630 * port. Just make all aggregation codes zero. 2631 */ 2632 if (num_active_ports) 2633 ac |= BIT(aggr_idx[i % num_active_ports]); 2634 ocelot_write_rix(ocelot, ac, ANA_PGID_PGID, i); 2635 } 2636 2637 /* Mark all ports in the same LAG as visited to avoid applying 2638 * the same config again. 2639 */ 2640 for (port = lag; port < ocelot->num_phys_ports; port++) { 2641 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2642 2643 if (!ocelot_port) 2644 continue; 2645 2646 if (ocelot_port->bond == bond) 2647 visited |= BIT(port); 2648 } 2649 } 2650 } 2651 2652 /* When offloading a bonding interface, the switch ports configured under the 2653 * same bond must have the same logical port ID, equal to the physical port ID 2654 * of the lowest numbered physical port in that bond. Otherwise, in standalone/ 2655 * bridged mode, each port has a logical port ID equal to its physical port ID. 2656 */ 2657 static void ocelot_setup_logical_port_ids(struct ocelot *ocelot) 2658 { 2659 int port; 2660 2661 for (port = 0; port < ocelot->num_phys_ports; port++) { 2662 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2663 struct net_device *bond; 2664 2665 if (!ocelot_port) 2666 continue; 2667 2668 bond = ocelot_port->bond; 2669 if (bond) { 2670 int lag = ocelot_bond_get_id(ocelot, bond); 2671 2672 ocelot_rmw_gix(ocelot, 2673 ANA_PORT_PORT_CFG_PORTID_VAL(lag), 2674 ANA_PORT_PORT_CFG_PORTID_VAL_M, 2675 ANA_PORT_PORT_CFG, port); 2676 } else { 2677 ocelot_rmw_gix(ocelot, 2678 ANA_PORT_PORT_CFG_PORTID_VAL(port), 2679 ANA_PORT_PORT_CFG_PORTID_VAL_M, 2680 ANA_PORT_PORT_CFG, port); 2681 } 2682 } 2683 } 2684 2685 static int ocelot_migrate_mc(struct ocelot *ocelot, struct ocelot_multicast *mc, 2686 unsigned long from_mask, unsigned long to_mask) 2687 { 2688 unsigned char addr[ETH_ALEN]; 2689 struct ocelot_pgid *pgid; 2690 u16 vid = mc->vid; 2691 2692 dev_dbg(ocelot->dev, 2693 "Migrating multicast %pM vid %d from port mask 0x%lx to 0x%lx\n", 2694 mc->addr, mc->vid, from_mask, to_mask); 2695 2696 /* First clean up the current port mask from hardware, because 2697 * we'll be modifying it. 2698 */ 2699 ocelot_pgid_free(ocelot, mc->pgid); 2700 ocelot_encode_ports_to_mdb(addr, mc); 2701 ocelot_mact_forget(ocelot, addr, vid); 2702 2703 mc->ports &= ~from_mask; 2704 mc->ports |= to_mask; 2705 2706 pgid = ocelot_mdb_get_pgid(ocelot, mc); 2707 if (IS_ERR(pgid)) { 2708 dev_err(ocelot->dev, 2709 "Cannot allocate PGID for mdb %pM vid %d\n", 2710 mc->addr, mc->vid); 2711 devm_kfree(ocelot->dev, mc); 2712 return PTR_ERR(pgid); 2713 } 2714 mc->pgid = pgid; 2715 2716 ocelot_encode_ports_to_mdb(addr, mc); 2717 2718 if (mc->entry_type != ENTRYTYPE_MACv4 && 2719 mc->entry_type != ENTRYTYPE_MACv6) 2720 ocelot_write_rix(ocelot, pgid->ports, ANA_PGID_PGID, 2721 pgid->index); 2722 2723 return ocelot_mact_learn(ocelot, pgid->index, addr, vid, 2724 mc->entry_type); 2725 } 2726 2727 int ocelot_migrate_mdbs(struct ocelot *ocelot, unsigned long from_mask, 2728 unsigned long to_mask) 2729 { 2730 struct ocelot_multicast *mc; 2731 int err; 2732 2733 list_for_each_entry(mc, &ocelot->multicast, list) { 2734 if (!(mc->ports & from_mask)) 2735 continue; 2736 2737 err = ocelot_migrate_mc(ocelot, mc, from_mask, to_mask); 2738 if (err) 2739 return err; 2740 } 2741 2742 return 0; 2743 } 2744 EXPORT_SYMBOL_GPL(ocelot_migrate_mdbs); 2745 2746 /* Documentation for PORTID_VAL says: 2747 * Logical port number for front port. If port is not a member of a LLAG, 2748 * then PORTID must be set to the physical port number. 2749 * If port is a member of a LLAG, then PORTID must be set to the common 2750 * PORTID_VAL used for all member ports of the LLAG. 2751 * The value must not exceed the number of physical ports on the device. 2752 * 2753 * This means we have little choice but to migrate FDB entries pointing towards 2754 * a logical port when that changes. 2755 */ 2756 static void ocelot_migrate_lag_fdbs(struct ocelot *ocelot, 2757 struct net_device *bond, 2758 int lag) 2759 { 2760 struct ocelot_lag_fdb *fdb; 2761 int err; 2762 2763 lockdep_assert_held(&ocelot->fwd_domain_lock); 2764 2765 list_for_each_entry(fdb, &ocelot->lag_fdbs, list) { 2766 if (fdb->bond != bond) 2767 continue; 2768 2769 err = ocelot_mact_forget(ocelot, fdb->addr, fdb->vid); 2770 if (err) { 2771 dev_err(ocelot->dev, 2772 "failed to delete LAG %s FDB %pM vid %d: %pe\n", 2773 bond->name, fdb->addr, fdb->vid, ERR_PTR(err)); 2774 } 2775 2776 err = ocelot_mact_learn(ocelot, lag, fdb->addr, fdb->vid, 2777 ENTRYTYPE_LOCKED); 2778 if (err) { 2779 dev_err(ocelot->dev, 2780 "failed to migrate LAG %s FDB %pM vid %d: %pe\n", 2781 bond->name, fdb->addr, fdb->vid, ERR_PTR(err)); 2782 } 2783 } 2784 } 2785 2786 int ocelot_port_lag_join(struct ocelot *ocelot, int port, 2787 struct net_device *bond, 2788 struct netdev_lag_upper_info *info) 2789 { 2790 if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) 2791 return -EOPNOTSUPP; 2792 2793 mutex_lock(&ocelot->fwd_domain_lock); 2794 2795 ocelot->ports[port]->bond = bond; 2796 2797 ocelot_setup_logical_port_ids(ocelot); 2798 ocelot_apply_bridge_fwd_mask(ocelot, true); 2799 ocelot_set_aggr_pgids(ocelot); 2800 2801 mutex_unlock(&ocelot->fwd_domain_lock); 2802 2803 return 0; 2804 } 2805 EXPORT_SYMBOL(ocelot_port_lag_join); 2806 2807 void ocelot_port_lag_leave(struct ocelot *ocelot, int port, 2808 struct net_device *bond) 2809 { 2810 int old_lag_id, new_lag_id; 2811 2812 mutex_lock(&ocelot->fwd_domain_lock); 2813 2814 old_lag_id = ocelot_bond_get_id(ocelot, bond); 2815 2816 ocelot->ports[port]->bond = NULL; 2817 2818 ocelot_setup_logical_port_ids(ocelot); 2819 ocelot_apply_bridge_fwd_mask(ocelot, false); 2820 ocelot_set_aggr_pgids(ocelot); 2821 2822 new_lag_id = ocelot_bond_get_id(ocelot, bond); 2823 2824 if (new_lag_id >= 0 && old_lag_id != new_lag_id) 2825 ocelot_migrate_lag_fdbs(ocelot, bond, new_lag_id); 2826 2827 mutex_unlock(&ocelot->fwd_domain_lock); 2828 } 2829 EXPORT_SYMBOL(ocelot_port_lag_leave); 2830 2831 void ocelot_port_lag_change(struct ocelot *ocelot, int port, bool lag_tx_active) 2832 { 2833 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2834 2835 mutex_lock(&ocelot->fwd_domain_lock); 2836 2837 ocelot_port->lag_tx_active = lag_tx_active; 2838 2839 /* Rebalance the LAGs */ 2840 ocelot_set_aggr_pgids(ocelot); 2841 2842 mutex_unlock(&ocelot->fwd_domain_lock); 2843 } 2844 EXPORT_SYMBOL(ocelot_port_lag_change); 2845 2846 int ocelot_lag_fdb_add(struct ocelot *ocelot, struct net_device *bond, 2847 const unsigned char *addr, u16 vid, 2848 const struct net_device *bridge) 2849 { 2850 struct ocelot_lag_fdb *fdb; 2851 int lag, err; 2852 2853 fdb = kzalloc(sizeof(*fdb), GFP_KERNEL); 2854 if (!fdb) 2855 return -ENOMEM; 2856 2857 mutex_lock(&ocelot->fwd_domain_lock); 2858 2859 if (!vid) 2860 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 2861 2862 ether_addr_copy(fdb->addr, addr); 2863 fdb->vid = vid; 2864 fdb->bond = bond; 2865 2866 lag = ocelot_bond_get_id(ocelot, bond); 2867 2868 err = ocelot_mact_learn(ocelot, lag, addr, vid, ENTRYTYPE_LOCKED); 2869 if (err) { 2870 mutex_unlock(&ocelot->fwd_domain_lock); 2871 kfree(fdb); 2872 return err; 2873 } 2874 2875 list_add_tail(&fdb->list, &ocelot->lag_fdbs); 2876 mutex_unlock(&ocelot->fwd_domain_lock); 2877 2878 return 0; 2879 } 2880 EXPORT_SYMBOL_GPL(ocelot_lag_fdb_add); 2881 2882 int ocelot_lag_fdb_del(struct ocelot *ocelot, struct net_device *bond, 2883 const unsigned char *addr, u16 vid, 2884 const struct net_device *bridge) 2885 { 2886 struct ocelot_lag_fdb *fdb, *tmp; 2887 2888 mutex_lock(&ocelot->fwd_domain_lock); 2889 2890 if (!vid) 2891 vid = ocelot_vlan_unaware_pvid(ocelot, bridge); 2892 2893 list_for_each_entry_safe(fdb, tmp, &ocelot->lag_fdbs, list) { 2894 if (!ether_addr_equal(fdb->addr, addr) || fdb->vid != vid || 2895 fdb->bond != bond) 2896 continue; 2897 2898 ocelot_mact_forget(ocelot, addr, vid); 2899 list_del(&fdb->list); 2900 mutex_unlock(&ocelot->fwd_domain_lock); 2901 kfree(fdb); 2902 2903 return 0; 2904 } 2905 2906 mutex_unlock(&ocelot->fwd_domain_lock); 2907 2908 return -ENOENT; 2909 } 2910 EXPORT_SYMBOL_GPL(ocelot_lag_fdb_del); 2911 2912 /* Configure the maximum SDU (L2 payload) on RX to the value specified in @sdu. 2913 * The length of VLAN tags is accounted for automatically via DEV_MAC_TAGS_CFG. 2914 * In the special case that it's the NPI port that we're configuring, the 2915 * length of the tag and optional prefix needs to be accounted for privately, 2916 * in order to be able to sustain communication at the requested @sdu. 2917 */ 2918 void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu) 2919 { 2920 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2921 int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN; 2922 int pause_start, pause_stop; 2923 int atop, atop_tot; 2924 2925 if (port == ocelot->npi) { 2926 maxlen += OCELOT_TAG_LEN; 2927 2928 if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT) 2929 maxlen += OCELOT_SHORT_PREFIX_LEN; 2930 else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG) 2931 maxlen += OCELOT_LONG_PREFIX_LEN; 2932 } 2933 2934 ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG); 2935 2936 /* Set Pause watermark hysteresis */ 2937 pause_start = 6 * maxlen / OCELOT_BUFFER_CELL_SZ; 2938 pause_stop = 4 * maxlen / OCELOT_BUFFER_CELL_SZ; 2939 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_START, 2940 pause_start); 2941 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_STOP, 2942 pause_stop); 2943 2944 /* Tail dropping watermarks */ 2945 atop_tot = (ocelot->packet_buffer_size - 9 * maxlen) / 2946 OCELOT_BUFFER_CELL_SZ; 2947 atop = (9 * maxlen) / OCELOT_BUFFER_CELL_SZ; 2948 ocelot_write_rix(ocelot, ocelot->ops->wm_enc(atop), SYS_ATOP, port); 2949 ocelot_write(ocelot, ocelot->ops->wm_enc(atop_tot), SYS_ATOP_TOT_CFG); 2950 } 2951 EXPORT_SYMBOL(ocelot_port_set_maxlen); 2952 2953 int ocelot_get_max_mtu(struct ocelot *ocelot, int port) 2954 { 2955 int max_mtu = 65535 - ETH_HLEN - ETH_FCS_LEN; 2956 2957 if (port == ocelot->npi) { 2958 max_mtu -= OCELOT_TAG_LEN; 2959 2960 if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_SHORT) 2961 max_mtu -= OCELOT_SHORT_PREFIX_LEN; 2962 else if (ocelot->npi_inj_prefix == OCELOT_TAG_PREFIX_LONG) 2963 max_mtu -= OCELOT_LONG_PREFIX_LEN; 2964 } 2965 2966 return max_mtu; 2967 } 2968 EXPORT_SYMBOL(ocelot_get_max_mtu); 2969 2970 static void ocelot_port_set_learning(struct ocelot *ocelot, int port, 2971 bool enabled) 2972 { 2973 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2974 u32 val = 0; 2975 2976 if (enabled) 2977 val = ANA_PORT_PORT_CFG_LEARN_ENA; 2978 2979 ocelot_rmw_gix(ocelot, val, ANA_PORT_PORT_CFG_LEARN_ENA, 2980 ANA_PORT_PORT_CFG, port); 2981 2982 ocelot_port->learn_ena = enabled; 2983 } 2984 2985 static void ocelot_port_set_ucast_flood(struct ocelot *ocelot, int port, 2986 bool enabled) 2987 { 2988 u32 val = 0; 2989 2990 if (enabled) 2991 val = BIT(port); 2992 2993 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_UC); 2994 } 2995 2996 static void ocelot_port_set_mcast_flood(struct ocelot *ocelot, int port, 2997 bool enabled) 2998 { 2999 u32 val = 0; 3000 3001 if (enabled) 3002 val = BIT(port); 3003 3004 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MC); 3005 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV4); 3006 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_MCIPV6); 3007 } 3008 3009 static void ocelot_port_set_bcast_flood(struct ocelot *ocelot, int port, 3010 bool enabled) 3011 { 3012 u32 val = 0; 3013 3014 if (enabled) 3015 val = BIT(port); 3016 3017 ocelot_rmw_rix(ocelot, val, BIT(port), ANA_PGID_PGID, PGID_BC); 3018 } 3019 3020 int ocelot_port_pre_bridge_flags(struct ocelot *ocelot, int port, 3021 struct switchdev_brport_flags flags) 3022 { 3023 if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | 3024 BR_BCAST_FLOOD)) 3025 return -EINVAL; 3026 3027 return 0; 3028 } 3029 EXPORT_SYMBOL(ocelot_port_pre_bridge_flags); 3030 3031 void ocelot_port_bridge_flags(struct ocelot *ocelot, int port, 3032 struct switchdev_brport_flags flags) 3033 { 3034 if (flags.mask & BR_LEARNING) 3035 ocelot_port_set_learning(ocelot, port, 3036 !!(flags.val & BR_LEARNING)); 3037 3038 if (flags.mask & BR_FLOOD) 3039 ocelot_port_set_ucast_flood(ocelot, port, 3040 !!(flags.val & BR_FLOOD)); 3041 3042 if (flags.mask & BR_MCAST_FLOOD) 3043 ocelot_port_set_mcast_flood(ocelot, port, 3044 !!(flags.val & BR_MCAST_FLOOD)); 3045 3046 if (flags.mask & BR_BCAST_FLOOD) 3047 ocelot_port_set_bcast_flood(ocelot, port, 3048 !!(flags.val & BR_BCAST_FLOOD)); 3049 } 3050 EXPORT_SYMBOL(ocelot_port_bridge_flags); 3051 3052 int ocelot_port_get_default_prio(struct ocelot *ocelot, int port) 3053 { 3054 int val = ocelot_read_gix(ocelot, ANA_PORT_QOS_CFG, port); 3055 3056 return ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL_X(val); 3057 } 3058 EXPORT_SYMBOL_GPL(ocelot_port_get_default_prio); 3059 3060 int ocelot_port_set_default_prio(struct ocelot *ocelot, int port, u8 prio) 3061 { 3062 if (prio >= OCELOT_NUM_TC) 3063 return -ERANGE; 3064 3065 ocelot_rmw_gix(ocelot, 3066 ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL(prio), 3067 ANA_PORT_QOS_CFG_QOS_DEFAULT_VAL_M, 3068 ANA_PORT_QOS_CFG, 3069 port); 3070 3071 return 0; 3072 } 3073 EXPORT_SYMBOL_GPL(ocelot_port_set_default_prio); 3074 3075 int ocelot_port_get_dscp_prio(struct ocelot *ocelot, int port, u8 dscp) 3076 { 3077 int qos_cfg = ocelot_read_gix(ocelot, ANA_PORT_QOS_CFG, port); 3078 int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp); 3079 3080 /* Return error if DSCP prioritization isn't enabled */ 3081 if (!(qos_cfg & ANA_PORT_QOS_CFG_QOS_DSCP_ENA)) 3082 return -EOPNOTSUPP; 3083 3084 if (qos_cfg & ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA) { 3085 dscp = ANA_DSCP_CFG_DSCP_TRANSLATE_VAL_X(dscp_cfg); 3086 /* Re-read ANA_DSCP_CFG for the translated DSCP */ 3087 dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp); 3088 } 3089 3090 /* If the DSCP value is not trusted, the QoS classification falls back 3091 * to VLAN PCP or port-based default. 3092 */ 3093 if (!(dscp_cfg & ANA_DSCP_CFG_DSCP_TRUST_ENA)) 3094 return -EOPNOTSUPP; 3095 3096 return ANA_DSCP_CFG_QOS_DSCP_VAL_X(dscp_cfg); 3097 } 3098 EXPORT_SYMBOL_GPL(ocelot_port_get_dscp_prio); 3099 3100 int ocelot_port_add_dscp_prio(struct ocelot *ocelot, int port, u8 dscp, u8 prio) 3101 { 3102 int mask, val; 3103 3104 if (prio >= OCELOT_NUM_TC) 3105 return -ERANGE; 3106 3107 /* There is at least one app table priority (this one), so we need to 3108 * make sure DSCP prioritization is enabled on the port. 3109 * Also make sure DSCP translation is disabled 3110 * (dcbnl doesn't support it). 3111 */ 3112 mask = ANA_PORT_QOS_CFG_QOS_DSCP_ENA | 3113 ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA; 3114 3115 ocelot_rmw_gix(ocelot, ANA_PORT_QOS_CFG_QOS_DSCP_ENA, mask, 3116 ANA_PORT_QOS_CFG, port); 3117 3118 /* Trust this DSCP value and map it to the given QoS class */ 3119 val = ANA_DSCP_CFG_DSCP_TRUST_ENA | ANA_DSCP_CFG_QOS_DSCP_VAL(prio); 3120 3121 ocelot_write_rix(ocelot, val, ANA_DSCP_CFG, dscp); 3122 3123 return 0; 3124 } 3125 EXPORT_SYMBOL_GPL(ocelot_port_add_dscp_prio); 3126 3127 int ocelot_port_del_dscp_prio(struct ocelot *ocelot, int port, u8 dscp, u8 prio) 3128 { 3129 int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, dscp); 3130 int mask, i; 3131 3132 /* During a "dcb app replace" command, the new app table entry will be 3133 * added first, then the old one will be deleted. But the hardware only 3134 * supports one QoS class per DSCP value (duh), so if we blindly delete 3135 * the app table entry for this DSCP value, we end up deleting the 3136 * entry with the new priority. Avoid that by checking whether user 3137 * space wants to delete the priority which is currently configured, or 3138 * something else which is no longer current. 3139 */ 3140 if (ANA_DSCP_CFG_QOS_DSCP_VAL_X(dscp_cfg) != prio) 3141 return 0; 3142 3143 /* Untrust this DSCP value */ 3144 ocelot_write_rix(ocelot, 0, ANA_DSCP_CFG, dscp); 3145 3146 for (i = 0; i < 64; i++) { 3147 int dscp_cfg = ocelot_read_rix(ocelot, ANA_DSCP_CFG, i); 3148 3149 /* There are still app table entries on the port, so we need to 3150 * keep DSCP enabled, nothing to do. 3151 */ 3152 if (dscp_cfg & ANA_DSCP_CFG_DSCP_TRUST_ENA) 3153 return 0; 3154 } 3155 3156 /* Disable DSCP QoS classification if there isn't any trusted 3157 * DSCP value left. 3158 */ 3159 mask = ANA_PORT_QOS_CFG_QOS_DSCP_ENA | 3160 ANA_PORT_QOS_CFG_DSCP_TRANSLATE_ENA; 3161 3162 ocelot_rmw_gix(ocelot, 0, mask, ANA_PORT_QOS_CFG, port); 3163 3164 return 0; 3165 } 3166 EXPORT_SYMBOL_GPL(ocelot_port_del_dscp_prio); 3167 3168 struct ocelot_mirror *ocelot_mirror_get(struct ocelot *ocelot, int to, 3169 struct netlink_ext_ack *extack) 3170 { 3171 struct ocelot_mirror *m = ocelot->mirror; 3172 3173 if (m) { 3174 if (m->to != to) { 3175 NL_SET_ERR_MSG_MOD(extack, 3176 "Mirroring already configured towards different egress port"); 3177 return ERR_PTR(-EBUSY); 3178 } 3179 3180 refcount_inc(&m->refcount); 3181 return m; 3182 } 3183 3184 m = kzalloc(sizeof(*m), GFP_KERNEL); 3185 if (!m) 3186 return ERR_PTR(-ENOMEM); 3187 3188 m->to = to; 3189 refcount_set(&m->refcount, 1); 3190 ocelot->mirror = m; 3191 3192 /* Program the mirror port to hardware */ 3193 ocelot_write(ocelot, BIT(to), ANA_MIRRORPORTS); 3194 3195 return m; 3196 } 3197 3198 void ocelot_mirror_put(struct ocelot *ocelot) 3199 { 3200 struct ocelot_mirror *m = ocelot->mirror; 3201 3202 if (!refcount_dec_and_test(&m->refcount)) 3203 return; 3204 3205 ocelot_write(ocelot, 0, ANA_MIRRORPORTS); 3206 ocelot->mirror = NULL; 3207 kfree(m); 3208 } 3209 3210 int ocelot_port_mirror_add(struct ocelot *ocelot, int from, int to, 3211 bool ingress, struct netlink_ext_ack *extack) 3212 { 3213 struct ocelot_mirror *m = ocelot_mirror_get(ocelot, to, extack); 3214 3215 if (IS_ERR(m)) 3216 return PTR_ERR(m); 3217 3218 if (ingress) { 3219 ocelot_rmw_gix(ocelot, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA, 3220 ANA_PORT_PORT_CFG_SRC_MIRROR_ENA, 3221 ANA_PORT_PORT_CFG, from); 3222 } else { 3223 ocelot_rmw(ocelot, BIT(from), BIT(from), 3224 ANA_EMIRRORPORTS); 3225 } 3226 3227 return 0; 3228 } 3229 EXPORT_SYMBOL_GPL(ocelot_port_mirror_add); 3230 3231 void ocelot_port_mirror_del(struct ocelot *ocelot, int from, bool ingress) 3232 { 3233 if (ingress) { 3234 ocelot_rmw_gix(ocelot, 0, ANA_PORT_PORT_CFG_SRC_MIRROR_ENA, 3235 ANA_PORT_PORT_CFG, from); 3236 } else { 3237 ocelot_rmw(ocelot, 0, BIT(from), ANA_EMIRRORPORTS); 3238 } 3239 3240 ocelot_mirror_put(ocelot); 3241 } 3242 EXPORT_SYMBOL_GPL(ocelot_port_mirror_del); 3243 3244 void ocelot_init_port(struct ocelot *ocelot, int port) 3245 { 3246 struct ocelot_port *ocelot_port = ocelot->ports[port]; 3247 3248 skb_queue_head_init(&ocelot_port->tx_skbs); 3249 3250 /* Basic L2 initialization */ 3251 3252 /* Set MAC IFG Gaps 3253 * FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0 3254 * !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5 3255 */ 3256 ocelot_port_writel(ocelot_port, DEV_MAC_IFG_CFG_TX_IFG(5), 3257 DEV_MAC_IFG_CFG); 3258 3259 /* Load seed (0) and set MAC HDX late collision */ 3260 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) | 3261 DEV_MAC_HDX_CFG_SEED_LOAD, 3262 DEV_MAC_HDX_CFG); 3263 mdelay(1); 3264 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67), 3265 DEV_MAC_HDX_CFG); 3266 3267 /* Set Max Length and maximum tags allowed */ 3268 ocelot_port_set_maxlen(ocelot, port, ETH_DATA_LEN); 3269 ocelot_port_writel(ocelot_port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) | 3270 DEV_MAC_TAGS_CFG_VLAN_AWR_ENA | 3271 DEV_MAC_TAGS_CFG_VLAN_DBL_AWR_ENA | 3272 DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA, 3273 DEV_MAC_TAGS_CFG); 3274 3275 /* Set SMAC of Pause frame (00:00:00:00:00:00) */ 3276 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG); 3277 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG); 3278 3279 /* Enable transmission of pause frames */ 3280 ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 1); 3281 3282 /* Drop frames with multicast source address */ 3283 ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, 3284 ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, 3285 ANA_PORT_DROP_CFG, port); 3286 3287 /* Set default VLAN and tag type to 8021Q. */ 3288 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q), 3289 REW_PORT_VLAN_CFG_PORT_TPID_M, 3290 REW_PORT_VLAN_CFG, port); 3291 3292 /* Disable source address learning for standalone mode */ 3293 ocelot_port_set_learning(ocelot, port, false); 3294 3295 /* Set the port's initial logical port ID value, enable receiving 3296 * frames on it, and configure the MAC address learning type to 3297 * automatic. 3298 */ 3299 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO | 3300 ANA_PORT_PORT_CFG_RECV_ENA | 3301 ANA_PORT_PORT_CFG_PORTID_VAL(port), 3302 ANA_PORT_PORT_CFG, port); 3303 3304 /* Enable vcap lookups */ 3305 ocelot_vcap_enable(ocelot, port); 3306 } 3307 EXPORT_SYMBOL(ocelot_init_port); 3308 3309 /* Configure and enable the CPU port module, which is a set of queues 3310 * accessible through register MMIO, frame DMA or Ethernet (in case 3311 * NPI mode is used). 3312 */ 3313 static void ocelot_cpu_port_init(struct ocelot *ocelot) 3314 { 3315 int cpu = ocelot->num_phys_ports; 3316 3317 /* The unicast destination PGID for the CPU port module is unused */ 3318 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu); 3319 /* Instead set up a multicast destination PGID for traffic copied to 3320 * the CPU. Whitelisted MAC addresses like the port netdevice MAC 3321 * addresses will be copied to the CPU via this PGID. 3322 */ 3323 ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU); 3324 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA | 3325 ANA_PORT_PORT_CFG_PORTID_VAL(cpu), 3326 ANA_PORT_PORT_CFG, cpu); 3327 3328 /* Enable CPU port module */ 3329 ocelot_fields_write(ocelot, cpu, QSYS_SWITCH_PORT_MODE_PORT_ENA, 1); 3330 /* CPU port Injection/Extraction configuration */ 3331 ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_XTR_HDR, 3332 OCELOT_TAG_PREFIX_NONE); 3333 ocelot_fields_write(ocelot, cpu, SYS_PORT_MODE_INCL_INJ_HDR, 3334 OCELOT_TAG_PREFIX_NONE); 3335 3336 /* Configure the CPU port to be VLAN aware */ 3337 ocelot_write_gix(ocelot, 3338 ANA_PORT_VLAN_CFG_VLAN_VID(OCELOT_STANDALONE_PVID) | 3339 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | 3340 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1), 3341 ANA_PORT_VLAN_CFG, cpu); 3342 } 3343 3344 static void ocelot_detect_features(struct ocelot *ocelot) 3345 { 3346 int mmgt, eq_ctrl; 3347 3348 /* For Ocelot, Felix, Seville, Serval etc, SYS:MMGT:MMGT:FREECNT holds 3349 * the number of 240-byte free memory words (aka 4-cell chunks) and not 3350 * 192 bytes as the documentation incorrectly says. 3351 */ 3352 mmgt = ocelot_read(ocelot, SYS_MMGT); 3353 ocelot->packet_buffer_size = 240 * SYS_MMGT_FREECNT(mmgt); 3354 3355 eq_ctrl = ocelot_read(ocelot, QSYS_EQ_CTRL); 3356 ocelot->num_frame_refs = QSYS_MMGT_EQ_CTRL_FP_FREE_CNT(eq_ctrl); 3357 } 3358 3359 int ocelot_init(struct ocelot *ocelot) 3360 { 3361 char queue_name[32]; 3362 int i, ret; 3363 u32 port; 3364 3365 if (ocelot->ops->reset) { 3366 ret = ocelot->ops->reset(ocelot); 3367 if (ret) { 3368 dev_err(ocelot->dev, "Switch reset failed\n"); 3369 return ret; 3370 } 3371 } 3372 3373 ocelot->stats = devm_kcalloc(ocelot->dev, 3374 ocelot->num_phys_ports * OCELOT_NUM_STATS, 3375 sizeof(u64), GFP_KERNEL); 3376 if (!ocelot->stats) 3377 return -ENOMEM; 3378 3379 spin_lock_init(&ocelot->stats_lock); 3380 mutex_init(&ocelot->ptp_lock); 3381 mutex_init(&ocelot->mact_lock); 3382 mutex_init(&ocelot->fwd_domain_lock); 3383 mutex_init(&ocelot->tas_lock); 3384 spin_lock_init(&ocelot->ptp_clock_lock); 3385 spin_lock_init(&ocelot->ts_id_lock); 3386 snprintf(queue_name, sizeof(queue_name), "%s-stats", 3387 dev_name(ocelot->dev)); 3388 ocelot->stats_queue = create_singlethread_workqueue(queue_name); 3389 if (!ocelot->stats_queue) 3390 return -ENOMEM; 3391 3392 ocelot->owq = alloc_ordered_workqueue("ocelot-owq", 0); 3393 if (!ocelot->owq) { 3394 destroy_workqueue(ocelot->stats_queue); 3395 return -ENOMEM; 3396 } 3397 3398 INIT_LIST_HEAD(&ocelot->multicast); 3399 INIT_LIST_HEAD(&ocelot->pgids); 3400 INIT_LIST_HEAD(&ocelot->vlans); 3401 INIT_LIST_HEAD(&ocelot->lag_fdbs); 3402 ocelot_detect_features(ocelot); 3403 ocelot_mact_init(ocelot); 3404 ocelot_vlan_init(ocelot); 3405 ocelot_vcap_init(ocelot); 3406 ocelot_cpu_port_init(ocelot); 3407 3408 if (ocelot->ops->psfp_init) 3409 ocelot->ops->psfp_init(ocelot); 3410 3411 for (port = 0; port < ocelot->num_phys_ports; port++) { 3412 /* Clear all counters (5 groups) */ 3413 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) | 3414 SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f), 3415 SYS_STAT_CFG); 3416 } 3417 3418 /* Only use S-Tag */ 3419 ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG); 3420 3421 /* Aggregation mode */ 3422 ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA | 3423 ANA_AGGR_CFG_AC_DMAC_ENA | 3424 ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA | 3425 ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA | 3426 ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA | 3427 ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA, 3428 ANA_AGGR_CFG); 3429 3430 /* Set MAC age time to default value. The entry is aged after 3431 * 2*AGE_PERIOD 3432 */ 3433 ocelot_write(ocelot, 3434 ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ), 3435 ANA_AUTOAGE); 3436 3437 /* Disable learning for frames discarded by VLAN ingress filtering */ 3438 regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1); 3439 3440 /* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */ 3441 ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA | 3442 SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING); 3443 3444 /* Setup flooding PGIDs */ 3445 for (i = 0; i < ocelot->num_flooding_pgids; i++) 3446 ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) | 3447 ANA_FLOODING_FLD_BROADCAST(PGID_BC) | 3448 ANA_FLOODING_FLD_UNICAST(PGID_UC), 3449 ANA_FLOODING, i); 3450 ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) | 3451 ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) | 3452 ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) | 3453 ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC), 3454 ANA_FLOODING_IPMC); 3455 3456 for (port = 0; port < ocelot->num_phys_ports; port++) { 3457 /* Transmit the frame to the local port. */ 3458 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port); 3459 /* Do not forward BPDU frames to the front ports. */ 3460 ocelot_write_gix(ocelot, 3461 ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff), 3462 ANA_PORT_CPU_FWD_BPDU_CFG, 3463 port); 3464 /* Ensure bridging is disabled */ 3465 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port); 3466 } 3467 3468 for_each_nonreserved_multicast_dest_pgid(ocelot, i) { 3469 u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0)); 3470 3471 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i); 3472 } 3473 3474 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_BLACKHOLE); 3475 3476 /* Allow broadcast and unknown L2 multicast to the CPU. */ 3477 ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), 3478 ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), 3479 ANA_PGID_PGID, PGID_MC); 3480 ocelot_rmw_rix(ocelot, ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), 3481 ANA_PGID_PGID_PGID(BIT(ocelot->num_phys_ports)), 3482 ANA_PGID_PGID, PGID_BC); 3483 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4); 3484 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6); 3485 3486 /* Allow manual injection via DEVCPU_QS registers, and byte swap these 3487 * registers endianness. 3488 */ 3489 ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP | 3490 QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0); 3491 ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP | 3492 QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0); 3493 ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) | 3494 ANA_CPUQ_CFG_CPUQ_LRN(2) | 3495 ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) | 3496 ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) | 3497 ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) | 3498 ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) | 3499 ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) | 3500 ANA_CPUQ_CFG_CPUQ_IGMP(6) | 3501 ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG); 3502 for (i = 0; i < 16; i++) 3503 ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) | 3504 ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6), 3505 ANA_CPUQ_8021_CFG, i); 3506 3507 ret = ocelot_prepare_stats_regions(ocelot); 3508 if (ret) { 3509 destroy_workqueue(ocelot->stats_queue); 3510 destroy_workqueue(ocelot->owq); 3511 return ret; 3512 } 3513 3514 INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work); 3515 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work, 3516 OCELOT_STATS_CHECK_DELAY); 3517 3518 return 0; 3519 } 3520 EXPORT_SYMBOL(ocelot_init); 3521 3522 void ocelot_deinit(struct ocelot *ocelot) 3523 { 3524 cancel_delayed_work(&ocelot->stats_work); 3525 destroy_workqueue(ocelot->stats_queue); 3526 destroy_workqueue(ocelot->owq); 3527 } 3528 EXPORT_SYMBOL(ocelot_deinit); 3529 3530 void ocelot_deinit_port(struct ocelot *ocelot, int port) 3531 { 3532 struct ocelot_port *ocelot_port = ocelot->ports[port]; 3533 3534 skb_queue_purge(&ocelot_port->tx_skbs); 3535 } 3536 EXPORT_SYMBOL(ocelot_deinit_port); 3537 3538 MODULE_LICENSE("Dual MIT/GPL"); 3539