1 // SPDX-License-Identifier: (GPL-2.0 or MIT) 2 /* 3 * DSA driver for: 4 * Hirschmann Hellcreek TSN switch. 5 * 6 * Copyright (C) 2019-2021 Linutronix GmbH 7 * Author Kurt Kanzenbach <kurt@linutronix.de> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/device.h> 13 #include <linux/of.h> 14 #include <linux/of_device.h> 15 #include <linux/of_mdio.h> 16 #include <linux/platform_device.h> 17 #include <linux/bitops.h> 18 #include <linux/if_bridge.h> 19 #include <linux/if_vlan.h> 20 #include <linux/etherdevice.h> 21 #include <linux/random.h> 22 #include <linux/iopoll.h> 23 #include <linux/mutex.h> 24 #include <linux/delay.h> 25 #include <net/dsa.h> 26 27 #include "hellcreek.h" 28 #include "hellcreek_ptp.h" 29 #include "hellcreek_hwtstamp.h" 30 31 static const struct hellcreek_counter hellcreek_counter[] = { 32 { 0x00, "RxFiltered", }, 33 { 0x01, "RxOctets1k", }, 34 { 0x02, "RxVTAG", }, 35 { 0x03, "RxL2BAD", }, 36 { 0x04, "RxOverloadDrop", }, 37 { 0x05, "RxUC", }, 38 { 0x06, "RxMC", }, 39 { 0x07, "RxBC", }, 40 { 0x08, "RxRS<64", }, 41 { 0x09, "RxRS64", }, 42 { 0x0a, "RxRS65_127", }, 43 { 0x0b, "RxRS128_255", }, 44 { 0x0c, "RxRS256_511", }, 45 { 0x0d, "RxRS512_1023", }, 46 { 0x0e, "RxRS1024_1518", }, 47 { 0x0f, "RxRS>1518", }, 48 { 0x10, "TxTailDropQueue0", }, 49 { 0x11, "TxTailDropQueue1", }, 50 { 0x12, "TxTailDropQueue2", }, 51 { 0x13, "TxTailDropQueue3", }, 52 { 0x14, "TxTailDropQueue4", }, 53 { 0x15, "TxTailDropQueue5", }, 54 { 0x16, "TxTailDropQueue6", }, 55 { 0x17, "TxTailDropQueue7", }, 56 { 0x18, "RxTrafficClass0", }, 57 { 0x19, "RxTrafficClass1", }, 58 { 0x1a, "RxTrafficClass2", }, 59 { 0x1b, "RxTrafficClass3", }, 60 { 0x1c, "RxTrafficClass4", }, 61 { 0x1d, "RxTrafficClass5", }, 62 { 0x1e, "RxTrafficClass6", }, 63 { 0x1f, "RxTrafficClass7", }, 64 { 0x21, "TxOctets1k", }, 65 { 0x22, "TxVTAG", }, 66 { 0x23, "TxL2BAD", }, 67 { 0x25, "TxUC", }, 68 { 0x26, "TxMC", }, 69 { 0x27, "TxBC", }, 70 { 0x28, "TxTS<64", }, 71 { 0x29, "TxTS64", }, 72 { 0x2a, "TxTS65_127", }, 73 { 0x2b, "TxTS128_255", }, 74 { 0x2c, "TxTS256_511", }, 75 { 0x2d, "TxTS512_1023", }, 76 { 0x2e, "TxTS1024_1518", }, 77 { 0x2f, "TxTS>1518", }, 78 { 0x30, "TxTrafficClassOverrun0", }, 79 { 0x31, "TxTrafficClassOverrun1", }, 80 { 0x32, "TxTrafficClassOverrun2", }, 81 { 0x33, "TxTrafficClassOverrun3", }, 82 { 0x34, "TxTrafficClassOverrun4", }, 83 { 0x35, "TxTrafficClassOverrun5", }, 84 { 0x36, "TxTrafficClassOverrun6", }, 85 { 0x37, "TxTrafficClassOverrun7", }, 86 { 0x38, "TxTrafficClass0", }, 87 { 0x39, "TxTrafficClass1", }, 88 { 0x3a, "TxTrafficClass2", }, 89 { 0x3b, "TxTrafficClass3", }, 90 { 0x3c, "TxTrafficClass4", }, 91 { 0x3d, "TxTrafficClass5", }, 92 { 0x3e, "TxTrafficClass6", }, 93 { 0x3f, "TxTrafficClass7", }, 94 }; 95 96 static u16 hellcreek_read(struct hellcreek *hellcreek, unsigned int offset) 97 { 98 return readw(hellcreek->base + offset); 99 } 100 101 static u16 hellcreek_read_ctrl(struct hellcreek *hellcreek) 102 { 103 return readw(hellcreek->base + HR_CTRL_C); 104 } 105 106 static u16 hellcreek_read_stat(struct hellcreek *hellcreek) 107 { 108 return readw(hellcreek->base + HR_SWSTAT); 109 } 110 111 static void hellcreek_write(struct hellcreek *hellcreek, u16 data, 112 unsigned int offset) 113 { 114 writew(data, hellcreek->base + offset); 115 } 116 117 static void hellcreek_select_port(struct hellcreek *hellcreek, int port) 118 { 119 u16 val = port << HR_PSEL_PTWSEL_SHIFT; 120 121 hellcreek_write(hellcreek, val, HR_PSEL); 122 } 123 124 static void hellcreek_select_prio(struct hellcreek *hellcreek, int prio) 125 { 126 u16 val = prio << HR_PSEL_PRTCWSEL_SHIFT; 127 128 hellcreek_write(hellcreek, val, HR_PSEL); 129 } 130 131 static void hellcreek_select_counter(struct hellcreek *hellcreek, int counter) 132 { 133 u16 val = counter << HR_CSEL_SHIFT; 134 135 hellcreek_write(hellcreek, val, HR_CSEL); 136 137 /* Data sheet states to wait at least 20 internal clock cycles */ 138 ndelay(200); 139 } 140 141 static void hellcreek_select_vlan(struct hellcreek *hellcreek, int vid, 142 bool pvid) 143 { 144 u16 val = 0; 145 146 /* Set pvid bit first */ 147 if (pvid) 148 val |= HR_VIDCFG_PVID; 149 hellcreek_write(hellcreek, val, HR_VIDCFG); 150 151 /* Set vlan */ 152 val |= vid << HR_VIDCFG_VID_SHIFT; 153 hellcreek_write(hellcreek, val, HR_VIDCFG); 154 } 155 156 static void hellcreek_select_tgd(struct hellcreek *hellcreek, int port) 157 { 158 u16 val = port << TR_TGDSEL_TDGSEL_SHIFT; 159 160 hellcreek_write(hellcreek, val, TR_TGDSEL); 161 } 162 163 static int hellcreek_wait_until_ready(struct hellcreek *hellcreek) 164 { 165 u16 val; 166 167 /* Wait up to 1ms, although 3 us should be enough */ 168 return readx_poll_timeout(hellcreek_read_ctrl, hellcreek, 169 val, val & HR_CTRL_C_READY, 170 3, 1000); 171 } 172 173 static int hellcreek_wait_until_transitioned(struct hellcreek *hellcreek) 174 { 175 u16 val; 176 177 return readx_poll_timeout_atomic(hellcreek_read_ctrl, hellcreek, 178 val, !(val & HR_CTRL_C_TRANSITION), 179 1, 1000); 180 } 181 182 static int hellcreek_wait_fdb_ready(struct hellcreek *hellcreek) 183 { 184 u16 val; 185 186 return readx_poll_timeout_atomic(hellcreek_read_stat, hellcreek, 187 val, !(val & HR_SWSTAT_BUSY), 188 1, 1000); 189 } 190 191 static int hellcreek_detect(struct hellcreek *hellcreek) 192 { 193 u16 id, rel_low, rel_high, date_low, date_high, tgd_ver; 194 u8 tgd_maj, tgd_min; 195 u32 rel, date; 196 197 id = hellcreek_read(hellcreek, HR_MODID_C); 198 rel_low = hellcreek_read(hellcreek, HR_REL_L_C); 199 rel_high = hellcreek_read(hellcreek, HR_REL_H_C); 200 date_low = hellcreek_read(hellcreek, HR_BLD_L_C); 201 date_high = hellcreek_read(hellcreek, HR_BLD_H_C); 202 tgd_ver = hellcreek_read(hellcreek, TR_TGDVER); 203 204 if (id != hellcreek->pdata->module_id) 205 return -ENODEV; 206 207 rel = rel_low | (rel_high << 16); 208 date = date_low | (date_high << 16); 209 tgd_maj = (tgd_ver & TR_TGDVER_REV_MAJ_MASK) >> TR_TGDVER_REV_MAJ_SHIFT; 210 tgd_min = (tgd_ver & TR_TGDVER_REV_MIN_MASK) >> TR_TGDVER_REV_MIN_SHIFT; 211 212 dev_info(hellcreek->dev, "Module ID=%02x Release=%04x Date=%04x TGD Version=%02x.%02x\n", 213 id, rel, date, tgd_maj, tgd_min); 214 215 return 0; 216 } 217 218 static void hellcreek_feature_detect(struct hellcreek *hellcreek) 219 { 220 u16 features; 221 222 features = hellcreek_read(hellcreek, HR_FEABITS0); 223 224 /* Only detect the size of the FDB table. The size and current 225 * utilization can be queried via devlink. 226 */ 227 hellcreek->fdb_entries = ((features & HR_FEABITS0_FDBBINS_MASK) >> 228 HR_FEABITS0_FDBBINS_SHIFT) * 32; 229 } 230 231 static enum dsa_tag_protocol hellcreek_get_tag_protocol(struct dsa_switch *ds, 232 int port, 233 enum dsa_tag_protocol mp) 234 { 235 return DSA_TAG_PROTO_HELLCREEK; 236 } 237 238 static int hellcreek_port_enable(struct dsa_switch *ds, int port, 239 struct phy_device *phy) 240 { 241 struct hellcreek *hellcreek = ds->priv; 242 struct hellcreek_port *hellcreek_port; 243 u16 val; 244 245 hellcreek_port = &hellcreek->ports[port]; 246 247 dev_dbg(hellcreek->dev, "Enable port %d\n", port); 248 249 mutex_lock(&hellcreek->reg_lock); 250 251 hellcreek_select_port(hellcreek, port); 252 val = hellcreek_port->ptcfg; 253 val |= HR_PTCFG_ADMIN_EN; 254 hellcreek_write(hellcreek, val, HR_PTCFG); 255 hellcreek_port->ptcfg = val; 256 257 mutex_unlock(&hellcreek->reg_lock); 258 259 return 0; 260 } 261 262 static void hellcreek_port_disable(struct dsa_switch *ds, int port) 263 { 264 struct hellcreek *hellcreek = ds->priv; 265 struct hellcreek_port *hellcreek_port; 266 u16 val; 267 268 hellcreek_port = &hellcreek->ports[port]; 269 270 dev_dbg(hellcreek->dev, "Disable port %d\n", port); 271 272 mutex_lock(&hellcreek->reg_lock); 273 274 hellcreek_select_port(hellcreek, port); 275 val = hellcreek_port->ptcfg; 276 val &= ~HR_PTCFG_ADMIN_EN; 277 hellcreek_write(hellcreek, val, HR_PTCFG); 278 hellcreek_port->ptcfg = val; 279 280 mutex_unlock(&hellcreek->reg_lock); 281 } 282 283 static void hellcreek_get_strings(struct dsa_switch *ds, int port, 284 u32 stringset, uint8_t *data) 285 { 286 int i; 287 288 for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i) { 289 const struct hellcreek_counter *counter = &hellcreek_counter[i]; 290 291 strlcpy(data + i * ETH_GSTRING_LEN, 292 counter->name, ETH_GSTRING_LEN); 293 } 294 } 295 296 static int hellcreek_get_sset_count(struct dsa_switch *ds, int port, int sset) 297 { 298 if (sset != ETH_SS_STATS) 299 return 0; 300 301 return ARRAY_SIZE(hellcreek_counter); 302 } 303 304 static void hellcreek_get_ethtool_stats(struct dsa_switch *ds, int port, 305 uint64_t *data) 306 { 307 struct hellcreek *hellcreek = ds->priv; 308 struct hellcreek_port *hellcreek_port; 309 int i; 310 311 hellcreek_port = &hellcreek->ports[port]; 312 313 for (i = 0; i < ARRAY_SIZE(hellcreek_counter); ++i) { 314 const struct hellcreek_counter *counter = &hellcreek_counter[i]; 315 u8 offset = counter->offset + port * 64; 316 u16 high, low; 317 u64 value; 318 319 mutex_lock(&hellcreek->reg_lock); 320 321 hellcreek_select_counter(hellcreek, offset); 322 323 /* The registers are locked internally by selecting the 324 * counter. So low and high can be read without reading high 325 * again. 326 */ 327 high = hellcreek_read(hellcreek, HR_CRDH); 328 low = hellcreek_read(hellcreek, HR_CRDL); 329 value = ((u64)high << 16) | low; 330 331 hellcreek_port->counter_values[i] += value; 332 data[i] = hellcreek_port->counter_values[i]; 333 334 mutex_unlock(&hellcreek->reg_lock); 335 } 336 } 337 338 static u16 hellcreek_private_vid(int port) 339 { 340 return VLAN_N_VID - port + 1; 341 } 342 343 static int hellcreek_vlan_prepare(struct dsa_switch *ds, int port, 344 const struct switchdev_obj_port_vlan *vlan, 345 struct netlink_ext_ack *extack) 346 { 347 struct hellcreek *hellcreek = ds->priv; 348 int i; 349 350 dev_dbg(hellcreek->dev, "VLAN prepare for port %d\n", port); 351 352 /* Restriction: Make sure that nobody uses the "private" VLANs. These 353 * VLANs are internally used by the driver to ensure port 354 * separation. Thus, they cannot be used by someone else. 355 */ 356 for (i = 0; i < hellcreek->pdata->num_ports; ++i) { 357 const u16 restricted_vid = hellcreek_private_vid(i); 358 359 if (!dsa_is_user_port(ds, i)) 360 continue; 361 362 if (vlan->vid == restricted_vid) { 363 NL_SET_ERR_MSG_MOD(extack, "VID restricted by driver"); 364 return -EBUSY; 365 } 366 } 367 368 return 0; 369 } 370 371 static void hellcreek_select_vlan_params(struct hellcreek *hellcreek, int port, 372 int *shift, int *mask) 373 { 374 switch (port) { 375 case 0: 376 *shift = HR_VIDMBRCFG_P0MBR_SHIFT; 377 *mask = HR_VIDMBRCFG_P0MBR_MASK; 378 break; 379 case 1: 380 *shift = HR_VIDMBRCFG_P1MBR_SHIFT; 381 *mask = HR_VIDMBRCFG_P1MBR_MASK; 382 break; 383 case 2: 384 *shift = HR_VIDMBRCFG_P2MBR_SHIFT; 385 *mask = HR_VIDMBRCFG_P2MBR_MASK; 386 break; 387 case 3: 388 *shift = HR_VIDMBRCFG_P3MBR_SHIFT; 389 *mask = HR_VIDMBRCFG_P3MBR_MASK; 390 break; 391 default: 392 *shift = *mask = 0; 393 dev_err(hellcreek->dev, "Unknown port %d selected!\n", port); 394 } 395 } 396 397 static void hellcreek_apply_vlan(struct hellcreek *hellcreek, int port, u16 vid, 398 bool pvid, bool untagged) 399 { 400 int shift, mask; 401 u16 val; 402 403 dev_dbg(hellcreek->dev, "Apply VLAN: port=%d vid=%u pvid=%d untagged=%d", 404 port, vid, pvid, untagged); 405 406 mutex_lock(&hellcreek->reg_lock); 407 408 hellcreek_select_port(hellcreek, port); 409 hellcreek_select_vlan(hellcreek, vid, pvid); 410 411 /* Setup port vlan membership */ 412 hellcreek_select_vlan_params(hellcreek, port, &shift, &mask); 413 val = hellcreek->vidmbrcfg[vid]; 414 val &= ~mask; 415 if (untagged) 416 val |= HELLCREEK_VLAN_UNTAGGED_MEMBER << shift; 417 else 418 val |= HELLCREEK_VLAN_TAGGED_MEMBER << shift; 419 420 hellcreek_write(hellcreek, val, HR_VIDMBRCFG); 421 hellcreek->vidmbrcfg[vid] = val; 422 423 mutex_unlock(&hellcreek->reg_lock); 424 } 425 426 static void hellcreek_unapply_vlan(struct hellcreek *hellcreek, int port, 427 u16 vid) 428 { 429 int shift, mask; 430 u16 val; 431 432 dev_dbg(hellcreek->dev, "Unapply VLAN: port=%d vid=%u\n", port, vid); 433 434 mutex_lock(&hellcreek->reg_lock); 435 436 hellcreek_select_vlan(hellcreek, vid, false); 437 438 /* Setup port vlan membership */ 439 hellcreek_select_vlan_params(hellcreek, port, &shift, &mask); 440 val = hellcreek->vidmbrcfg[vid]; 441 val &= ~mask; 442 val |= HELLCREEK_VLAN_NO_MEMBER << shift; 443 444 hellcreek_write(hellcreek, val, HR_VIDMBRCFG); 445 hellcreek->vidmbrcfg[vid] = val; 446 447 mutex_unlock(&hellcreek->reg_lock); 448 } 449 450 static int hellcreek_vlan_add(struct dsa_switch *ds, int port, 451 const struct switchdev_obj_port_vlan *vlan, 452 struct netlink_ext_ack *extack) 453 { 454 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 455 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 456 struct hellcreek *hellcreek = ds->priv; 457 int err; 458 459 err = hellcreek_vlan_prepare(ds, port, vlan, extack); 460 if (err) 461 return err; 462 463 dev_dbg(hellcreek->dev, "Add VLAN %d on port %d, %s, %s\n", 464 vlan->vid, port, untagged ? "untagged" : "tagged", 465 pvid ? "PVID" : "no PVID"); 466 467 hellcreek_apply_vlan(hellcreek, port, vlan->vid, pvid, untagged); 468 469 return 0; 470 } 471 472 static int hellcreek_vlan_del(struct dsa_switch *ds, int port, 473 const struct switchdev_obj_port_vlan *vlan) 474 { 475 struct hellcreek *hellcreek = ds->priv; 476 477 dev_dbg(hellcreek->dev, "Remove VLAN %d on port %d\n", vlan->vid, port); 478 479 hellcreek_unapply_vlan(hellcreek, port, vlan->vid); 480 481 return 0; 482 } 483 484 static void hellcreek_port_stp_state_set(struct dsa_switch *ds, int port, 485 u8 state) 486 { 487 struct hellcreek *hellcreek = ds->priv; 488 struct hellcreek_port *hellcreek_port; 489 const char *new_state; 490 u16 val; 491 492 mutex_lock(&hellcreek->reg_lock); 493 494 hellcreek_port = &hellcreek->ports[port]; 495 val = hellcreek_port->ptcfg; 496 497 switch (state) { 498 case BR_STATE_DISABLED: 499 new_state = "DISABLED"; 500 val |= HR_PTCFG_BLOCKED; 501 val &= ~HR_PTCFG_LEARNING_EN; 502 break; 503 case BR_STATE_BLOCKING: 504 new_state = "BLOCKING"; 505 val |= HR_PTCFG_BLOCKED; 506 val &= ~HR_PTCFG_LEARNING_EN; 507 break; 508 case BR_STATE_LISTENING: 509 new_state = "LISTENING"; 510 val |= HR_PTCFG_BLOCKED; 511 val &= ~HR_PTCFG_LEARNING_EN; 512 break; 513 case BR_STATE_LEARNING: 514 new_state = "LEARNING"; 515 val |= HR_PTCFG_BLOCKED; 516 val |= HR_PTCFG_LEARNING_EN; 517 break; 518 case BR_STATE_FORWARDING: 519 new_state = "FORWARDING"; 520 val &= ~HR_PTCFG_BLOCKED; 521 val |= HR_PTCFG_LEARNING_EN; 522 break; 523 default: 524 new_state = "UNKNOWN"; 525 } 526 527 hellcreek_select_port(hellcreek, port); 528 hellcreek_write(hellcreek, val, HR_PTCFG); 529 hellcreek_port->ptcfg = val; 530 531 mutex_unlock(&hellcreek->reg_lock); 532 533 dev_dbg(hellcreek->dev, "Configured STP state for port %d: %s\n", 534 port, new_state); 535 } 536 537 static void hellcreek_setup_ingressflt(struct hellcreek *hellcreek, int port, 538 bool enable) 539 { 540 struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; 541 u16 ptcfg; 542 543 mutex_lock(&hellcreek->reg_lock); 544 545 ptcfg = hellcreek_port->ptcfg; 546 547 if (enable) 548 ptcfg |= HR_PTCFG_INGRESSFLT; 549 else 550 ptcfg &= ~HR_PTCFG_INGRESSFLT; 551 552 hellcreek_select_port(hellcreek, port); 553 hellcreek_write(hellcreek, ptcfg, HR_PTCFG); 554 hellcreek_port->ptcfg = ptcfg; 555 556 mutex_unlock(&hellcreek->reg_lock); 557 } 558 559 static void hellcreek_setup_vlan_awareness(struct hellcreek *hellcreek, 560 bool enable) 561 { 562 u16 swcfg; 563 564 mutex_lock(&hellcreek->reg_lock); 565 566 swcfg = hellcreek->swcfg; 567 568 if (enable) 569 swcfg |= HR_SWCFG_VLAN_UNAWARE; 570 else 571 swcfg &= ~HR_SWCFG_VLAN_UNAWARE; 572 573 hellcreek_write(hellcreek, swcfg, HR_SWCFG); 574 575 mutex_unlock(&hellcreek->reg_lock); 576 } 577 578 /* Default setup for DSA: VLAN <X>: CPU and Port <X> egress untagged. */ 579 static void hellcreek_setup_vlan_membership(struct dsa_switch *ds, int port, 580 bool enabled) 581 { 582 const u16 vid = hellcreek_private_vid(port); 583 int upstream = dsa_upstream_port(ds, port); 584 struct hellcreek *hellcreek = ds->priv; 585 586 /* Apply vid to port as egress untagged and port vlan id */ 587 if (enabled) 588 hellcreek_apply_vlan(hellcreek, port, vid, true, true); 589 else 590 hellcreek_unapply_vlan(hellcreek, port, vid); 591 592 /* Apply vid to cpu port as well */ 593 if (enabled) 594 hellcreek_apply_vlan(hellcreek, upstream, vid, false, true); 595 else 596 hellcreek_unapply_vlan(hellcreek, upstream, vid); 597 } 598 599 static void hellcreek_port_set_ucast_flood(struct hellcreek *hellcreek, 600 int port, bool enable) 601 { 602 struct hellcreek_port *hellcreek_port; 603 u16 val; 604 605 hellcreek_port = &hellcreek->ports[port]; 606 607 dev_dbg(hellcreek->dev, "%s unicast flooding on port %d\n", 608 enable ? "Enable" : "Disable", port); 609 610 mutex_lock(&hellcreek->reg_lock); 611 612 hellcreek_select_port(hellcreek, port); 613 val = hellcreek_port->ptcfg; 614 if (enable) 615 val &= ~HR_PTCFG_UUC_FLT; 616 else 617 val |= HR_PTCFG_UUC_FLT; 618 hellcreek_write(hellcreek, val, HR_PTCFG); 619 hellcreek_port->ptcfg = val; 620 621 mutex_unlock(&hellcreek->reg_lock); 622 } 623 624 static void hellcreek_port_set_mcast_flood(struct hellcreek *hellcreek, 625 int port, bool enable) 626 { 627 struct hellcreek_port *hellcreek_port; 628 u16 val; 629 630 hellcreek_port = &hellcreek->ports[port]; 631 632 dev_dbg(hellcreek->dev, "%s multicast flooding on port %d\n", 633 enable ? "Enable" : "Disable", port); 634 635 mutex_lock(&hellcreek->reg_lock); 636 637 hellcreek_select_port(hellcreek, port); 638 val = hellcreek_port->ptcfg; 639 if (enable) 640 val &= ~HR_PTCFG_UMC_FLT; 641 else 642 val |= HR_PTCFG_UMC_FLT; 643 hellcreek_write(hellcreek, val, HR_PTCFG); 644 hellcreek_port->ptcfg = val; 645 646 mutex_unlock(&hellcreek->reg_lock); 647 } 648 649 static int hellcreek_pre_bridge_flags(struct dsa_switch *ds, int port, 650 struct switchdev_brport_flags flags, 651 struct netlink_ext_ack *extack) 652 { 653 if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD)) 654 return -EINVAL; 655 656 return 0; 657 } 658 659 static int hellcreek_bridge_flags(struct dsa_switch *ds, int port, 660 struct switchdev_brport_flags flags, 661 struct netlink_ext_ack *extack) 662 { 663 struct hellcreek *hellcreek = ds->priv; 664 665 if (flags.mask & BR_FLOOD) 666 hellcreek_port_set_ucast_flood(hellcreek, port, 667 !!(flags.val & BR_FLOOD)); 668 669 if (flags.mask & BR_MCAST_FLOOD) 670 hellcreek_port_set_mcast_flood(hellcreek, port, 671 !!(flags.val & BR_MCAST_FLOOD)); 672 673 return 0; 674 } 675 676 static int hellcreek_port_bridge_join(struct dsa_switch *ds, int port, 677 struct net_device *br) 678 { 679 struct hellcreek *hellcreek = ds->priv; 680 681 dev_dbg(hellcreek->dev, "Port %d joins a bridge\n", port); 682 683 /* When joining a vlan_filtering bridge, keep the switch VLAN aware */ 684 if (!ds->vlan_filtering) 685 hellcreek_setup_vlan_awareness(hellcreek, false); 686 687 /* Drop private vlans */ 688 hellcreek_setup_vlan_membership(ds, port, false); 689 690 return 0; 691 } 692 693 static void hellcreek_port_bridge_leave(struct dsa_switch *ds, int port, 694 struct net_device *br) 695 { 696 struct hellcreek *hellcreek = ds->priv; 697 698 dev_dbg(hellcreek->dev, "Port %d leaves a bridge\n", port); 699 700 /* Enable VLAN awareness */ 701 hellcreek_setup_vlan_awareness(hellcreek, true); 702 703 /* Enable private vlans */ 704 hellcreek_setup_vlan_membership(ds, port, true); 705 } 706 707 static int __hellcreek_fdb_add(struct hellcreek *hellcreek, 708 const struct hellcreek_fdb_entry *entry) 709 { 710 u16 meta = 0; 711 712 dev_dbg(hellcreek->dev, "Add static FDB entry: MAC=%pM, MASK=0x%02x, " 713 "OBT=%d, REPRIO_EN=%d, PRIO=%d\n", entry->mac, entry->portmask, 714 entry->is_obt, entry->reprio_en, entry->reprio_tc); 715 716 /* Add mac address */ 717 hellcreek_write(hellcreek, entry->mac[1] | (entry->mac[0] << 8), HR_FDBWDH); 718 hellcreek_write(hellcreek, entry->mac[3] | (entry->mac[2] << 8), HR_FDBWDM); 719 hellcreek_write(hellcreek, entry->mac[5] | (entry->mac[4] << 8), HR_FDBWDL); 720 721 /* Meta data */ 722 meta |= entry->portmask << HR_FDBWRM0_PORTMASK_SHIFT; 723 if (entry->is_obt) 724 meta |= HR_FDBWRM0_OBT; 725 if (entry->reprio_en) { 726 meta |= HR_FDBWRM0_REPRIO_EN; 727 meta |= entry->reprio_tc << HR_FDBWRM0_REPRIO_TC_SHIFT; 728 } 729 hellcreek_write(hellcreek, meta, HR_FDBWRM0); 730 731 /* Commit */ 732 hellcreek_write(hellcreek, 0x00, HR_FDBWRCMD); 733 734 /* Wait until done */ 735 return hellcreek_wait_fdb_ready(hellcreek); 736 } 737 738 static int __hellcreek_fdb_del(struct hellcreek *hellcreek, 739 const struct hellcreek_fdb_entry *entry) 740 { 741 dev_dbg(hellcreek->dev, "Delete FDB entry: MAC=%pM!\n", entry->mac); 742 743 /* Delete by matching idx */ 744 hellcreek_write(hellcreek, entry->idx | HR_FDBWRCMD_FDBDEL, HR_FDBWRCMD); 745 746 /* Wait until done */ 747 return hellcreek_wait_fdb_ready(hellcreek); 748 } 749 750 static void hellcreek_populate_fdb_entry(struct hellcreek *hellcreek, 751 struct hellcreek_fdb_entry *entry, 752 size_t idx) 753 { 754 unsigned char addr[ETH_ALEN]; 755 u16 meta, mac; 756 757 /* Read values */ 758 meta = hellcreek_read(hellcreek, HR_FDBMDRD); 759 mac = hellcreek_read(hellcreek, HR_FDBRDL); 760 addr[5] = mac & 0xff; 761 addr[4] = (mac & 0xff00) >> 8; 762 mac = hellcreek_read(hellcreek, HR_FDBRDM); 763 addr[3] = mac & 0xff; 764 addr[2] = (mac & 0xff00) >> 8; 765 mac = hellcreek_read(hellcreek, HR_FDBRDH); 766 addr[1] = mac & 0xff; 767 addr[0] = (mac & 0xff00) >> 8; 768 769 /* Populate @entry */ 770 memcpy(entry->mac, addr, sizeof(addr)); 771 entry->idx = idx; 772 entry->portmask = (meta & HR_FDBMDRD_PORTMASK_MASK) >> 773 HR_FDBMDRD_PORTMASK_SHIFT; 774 entry->age = (meta & HR_FDBMDRD_AGE_MASK) >> 775 HR_FDBMDRD_AGE_SHIFT; 776 entry->is_obt = !!(meta & HR_FDBMDRD_OBT); 777 entry->pass_blocked = !!(meta & HR_FDBMDRD_PASS_BLOCKED); 778 entry->is_static = !!(meta & HR_FDBMDRD_STATIC); 779 entry->reprio_tc = (meta & HR_FDBMDRD_REPRIO_TC_MASK) >> 780 HR_FDBMDRD_REPRIO_TC_SHIFT; 781 entry->reprio_en = !!(meta & HR_FDBMDRD_REPRIO_EN); 782 } 783 784 /* Retrieve the index of a FDB entry by mac address. Currently we search through 785 * the complete table in hardware. If that's too slow, we might have to cache 786 * the complete FDB table in software. 787 */ 788 static int hellcreek_fdb_get(struct hellcreek *hellcreek, 789 const unsigned char *dest, 790 struct hellcreek_fdb_entry *entry) 791 { 792 size_t i; 793 794 /* Set read pointer to zero: The read of HR_FDBMAX (read-only register) 795 * should reset the internal pointer. But, that doesn't work. The vendor 796 * suggested a subsequent write as workaround. Same for HR_FDBRDH below. 797 */ 798 hellcreek_read(hellcreek, HR_FDBMAX); 799 hellcreek_write(hellcreek, 0x00, HR_FDBMAX); 800 801 /* We have to read the complete table, because the switch/driver might 802 * enter new entries anywhere. 803 */ 804 for (i = 0; i < hellcreek->fdb_entries; ++i) { 805 struct hellcreek_fdb_entry tmp = { 0 }; 806 807 /* Read entry */ 808 hellcreek_populate_fdb_entry(hellcreek, &tmp, i); 809 810 /* Force next entry */ 811 hellcreek_write(hellcreek, 0x00, HR_FDBRDH); 812 813 if (memcmp(tmp.mac, dest, ETH_ALEN)) 814 continue; 815 816 /* Match found */ 817 memcpy(entry, &tmp, sizeof(*entry)); 818 819 return 0; 820 } 821 822 return -ENOENT; 823 } 824 825 static int hellcreek_fdb_add(struct dsa_switch *ds, int port, 826 const unsigned char *addr, u16 vid) 827 { 828 struct hellcreek_fdb_entry entry = { 0 }; 829 struct hellcreek *hellcreek = ds->priv; 830 int ret; 831 832 dev_dbg(hellcreek->dev, "Add FDB entry for MAC=%pM\n", addr); 833 834 mutex_lock(&hellcreek->reg_lock); 835 836 ret = hellcreek_fdb_get(hellcreek, addr, &entry); 837 if (ret) { 838 /* Not found */ 839 memcpy(entry.mac, addr, sizeof(entry.mac)); 840 entry.portmask = BIT(port); 841 842 ret = __hellcreek_fdb_add(hellcreek, &entry); 843 if (ret) { 844 dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); 845 goto out; 846 } 847 } else { 848 /* Found */ 849 ret = __hellcreek_fdb_del(hellcreek, &entry); 850 if (ret) { 851 dev_err(hellcreek->dev, "Failed to delete FDB entry!\n"); 852 goto out; 853 } 854 855 entry.portmask |= BIT(port); 856 857 ret = __hellcreek_fdb_add(hellcreek, &entry); 858 if (ret) { 859 dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); 860 goto out; 861 } 862 } 863 864 out: 865 mutex_unlock(&hellcreek->reg_lock); 866 867 return ret; 868 } 869 870 static int hellcreek_fdb_del(struct dsa_switch *ds, int port, 871 const unsigned char *addr, u16 vid) 872 { 873 struct hellcreek_fdb_entry entry = { 0 }; 874 struct hellcreek *hellcreek = ds->priv; 875 int ret; 876 877 dev_dbg(hellcreek->dev, "Delete FDB entry for MAC=%pM\n", addr); 878 879 mutex_lock(&hellcreek->reg_lock); 880 881 ret = hellcreek_fdb_get(hellcreek, addr, &entry); 882 if (ret) { 883 /* Not found */ 884 dev_err(hellcreek->dev, "FDB entry for deletion not found!\n"); 885 } else { 886 /* Found */ 887 ret = __hellcreek_fdb_del(hellcreek, &entry); 888 if (ret) { 889 dev_err(hellcreek->dev, "Failed to delete FDB entry!\n"); 890 goto out; 891 } 892 893 entry.portmask &= ~BIT(port); 894 895 if (entry.portmask != 0x00) { 896 ret = __hellcreek_fdb_add(hellcreek, &entry); 897 if (ret) { 898 dev_err(hellcreek->dev, "Failed to add FDB entry!\n"); 899 goto out; 900 } 901 } 902 } 903 904 out: 905 mutex_unlock(&hellcreek->reg_lock); 906 907 return ret; 908 } 909 910 static int hellcreek_fdb_dump(struct dsa_switch *ds, int port, 911 dsa_fdb_dump_cb_t *cb, void *data) 912 { 913 struct hellcreek *hellcreek = ds->priv; 914 u16 entries; 915 size_t i; 916 917 mutex_lock(&hellcreek->reg_lock); 918 919 /* Set read pointer to zero: The read of HR_FDBMAX (read-only register) 920 * should reset the internal pointer. But, that doesn't work. The vendor 921 * suggested a subsequent write as workaround. Same for HR_FDBRDH below. 922 */ 923 entries = hellcreek_read(hellcreek, HR_FDBMAX); 924 hellcreek_write(hellcreek, 0x00, HR_FDBMAX); 925 926 dev_dbg(hellcreek->dev, "FDB dump for port %d, entries=%d!\n", port, entries); 927 928 /* Read table */ 929 for (i = 0; i < hellcreek->fdb_entries; ++i) { 930 struct hellcreek_fdb_entry entry = { 0 }; 931 932 /* Read entry */ 933 hellcreek_populate_fdb_entry(hellcreek, &entry, i); 934 935 /* Force next entry */ 936 hellcreek_write(hellcreek, 0x00, HR_FDBRDH); 937 938 /* Check valid */ 939 if (is_zero_ether_addr(entry.mac)) 940 continue; 941 942 /* Check port mask */ 943 if (!(entry.portmask & BIT(port))) 944 continue; 945 946 cb(entry.mac, 0, entry.is_static, data); 947 } 948 949 mutex_unlock(&hellcreek->reg_lock); 950 951 return 0; 952 } 953 954 static int hellcreek_vlan_filtering(struct dsa_switch *ds, int port, 955 bool vlan_filtering, 956 struct netlink_ext_ack *extack) 957 { 958 struct hellcreek *hellcreek = ds->priv; 959 960 dev_dbg(hellcreek->dev, "%s VLAN filtering on port %d\n", 961 vlan_filtering ? "Enable" : "Disable", port); 962 963 /* Configure port to drop packages with not known vids */ 964 hellcreek_setup_ingressflt(hellcreek, port, vlan_filtering); 965 966 /* Enable VLAN awareness on the switch. This save due to 967 * ds->vlan_filtering_is_global. 968 */ 969 hellcreek_setup_vlan_awareness(hellcreek, vlan_filtering); 970 971 return 0; 972 } 973 974 static int hellcreek_enable_ip_core(struct hellcreek *hellcreek) 975 { 976 int ret; 977 u16 val; 978 979 mutex_lock(&hellcreek->reg_lock); 980 981 val = hellcreek_read(hellcreek, HR_CTRL_C); 982 val |= HR_CTRL_C_ENABLE; 983 hellcreek_write(hellcreek, val, HR_CTRL_C); 984 ret = hellcreek_wait_until_transitioned(hellcreek); 985 986 mutex_unlock(&hellcreek->reg_lock); 987 988 return ret; 989 } 990 991 static void hellcreek_setup_cpu_and_tunnel_port(struct hellcreek *hellcreek) 992 { 993 struct hellcreek_port *tunnel_port = &hellcreek->ports[TUNNEL_PORT]; 994 struct hellcreek_port *cpu_port = &hellcreek->ports[CPU_PORT]; 995 u16 ptcfg = 0; 996 997 ptcfg |= HR_PTCFG_LEARNING_EN | HR_PTCFG_ADMIN_EN; 998 999 mutex_lock(&hellcreek->reg_lock); 1000 1001 hellcreek_select_port(hellcreek, CPU_PORT); 1002 hellcreek_write(hellcreek, ptcfg, HR_PTCFG); 1003 1004 hellcreek_select_port(hellcreek, TUNNEL_PORT); 1005 hellcreek_write(hellcreek, ptcfg, HR_PTCFG); 1006 1007 cpu_port->ptcfg = ptcfg; 1008 tunnel_port->ptcfg = ptcfg; 1009 1010 mutex_unlock(&hellcreek->reg_lock); 1011 } 1012 1013 static void hellcreek_setup_tc_identity_mapping(struct hellcreek *hellcreek) 1014 { 1015 int i; 1016 1017 /* The switch has multiple egress queues per port. The queue is selected 1018 * via the PCP field in the VLAN header. The switch internally deals 1019 * with traffic classes instead of PCP values and this mapping is 1020 * configurable. 1021 * 1022 * The default mapping is (PCP - TC): 1023 * 7 - 7 1024 * 6 - 6 1025 * 5 - 5 1026 * 4 - 4 1027 * 3 - 3 1028 * 2 - 1 1029 * 1 - 0 1030 * 0 - 2 1031 * 1032 * The default should be an identity mapping. 1033 */ 1034 1035 for (i = 0; i < 8; ++i) { 1036 mutex_lock(&hellcreek->reg_lock); 1037 1038 hellcreek_select_prio(hellcreek, i); 1039 hellcreek_write(hellcreek, 1040 i << HR_PRTCCFG_PCP_TC_MAP_SHIFT, 1041 HR_PRTCCFG); 1042 1043 mutex_unlock(&hellcreek->reg_lock); 1044 } 1045 } 1046 1047 static int hellcreek_setup_fdb(struct hellcreek *hellcreek) 1048 { 1049 static struct hellcreek_fdb_entry ptp = { 1050 /* MAC: 01-1B-19-00-00-00 */ 1051 .mac = { 0x01, 0x1b, 0x19, 0x00, 0x00, 0x00 }, 1052 .portmask = 0x03, /* Management ports */ 1053 .age = 0, 1054 .is_obt = 0, 1055 .pass_blocked = 0, 1056 .is_static = 1, 1057 .reprio_tc = 6, /* TC: 6 as per IEEE 802.1AS */ 1058 .reprio_en = 1, 1059 }; 1060 static struct hellcreek_fdb_entry p2p = { 1061 /* MAC: 01-80-C2-00-00-0E */ 1062 .mac = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e }, 1063 .portmask = 0x03, /* Management ports */ 1064 .age = 0, 1065 .is_obt = 0, 1066 .pass_blocked = 0, 1067 .is_static = 1, 1068 .reprio_tc = 6, /* TC: 6 as per IEEE 802.1AS */ 1069 .reprio_en = 1, 1070 }; 1071 int ret; 1072 1073 mutex_lock(&hellcreek->reg_lock); 1074 ret = __hellcreek_fdb_add(hellcreek, &ptp); 1075 if (ret) 1076 goto out; 1077 ret = __hellcreek_fdb_add(hellcreek, &p2p); 1078 out: 1079 mutex_unlock(&hellcreek->reg_lock); 1080 1081 return ret; 1082 } 1083 1084 static int hellcreek_devlink_info_get(struct dsa_switch *ds, 1085 struct devlink_info_req *req, 1086 struct netlink_ext_ack *extack) 1087 { 1088 struct hellcreek *hellcreek = ds->priv; 1089 int ret; 1090 1091 ret = devlink_info_driver_name_put(req, "hellcreek"); 1092 if (ret) 1093 return ret; 1094 1095 return devlink_info_version_fixed_put(req, 1096 DEVLINK_INFO_VERSION_GENERIC_ASIC_ID, 1097 hellcreek->pdata->name); 1098 } 1099 1100 static u64 hellcreek_devlink_vlan_table_get(void *priv) 1101 { 1102 struct hellcreek *hellcreek = priv; 1103 u64 count = 0; 1104 int i; 1105 1106 mutex_lock(&hellcreek->reg_lock); 1107 for (i = 0; i < VLAN_N_VID; ++i) 1108 if (hellcreek->vidmbrcfg[i]) 1109 count++; 1110 mutex_unlock(&hellcreek->reg_lock); 1111 1112 return count; 1113 } 1114 1115 static u64 hellcreek_devlink_fdb_table_get(void *priv) 1116 { 1117 struct hellcreek *hellcreek = priv; 1118 u64 count = 0; 1119 1120 /* Reading this register has side effects. Synchronize against the other 1121 * FDB operations. 1122 */ 1123 mutex_lock(&hellcreek->reg_lock); 1124 count = hellcreek_read(hellcreek, HR_FDBMAX); 1125 mutex_unlock(&hellcreek->reg_lock); 1126 1127 return count; 1128 } 1129 1130 static int hellcreek_setup_devlink_resources(struct dsa_switch *ds) 1131 { 1132 struct devlink_resource_size_params size_vlan_params; 1133 struct devlink_resource_size_params size_fdb_params; 1134 struct hellcreek *hellcreek = ds->priv; 1135 int err; 1136 1137 devlink_resource_size_params_init(&size_vlan_params, VLAN_N_VID, 1138 VLAN_N_VID, 1139 1, DEVLINK_RESOURCE_UNIT_ENTRY); 1140 1141 devlink_resource_size_params_init(&size_fdb_params, 1142 hellcreek->fdb_entries, 1143 hellcreek->fdb_entries, 1144 1, DEVLINK_RESOURCE_UNIT_ENTRY); 1145 1146 err = dsa_devlink_resource_register(ds, "VLAN", VLAN_N_VID, 1147 HELLCREEK_DEVLINK_PARAM_ID_VLAN_TABLE, 1148 DEVLINK_RESOURCE_ID_PARENT_TOP, 1149 &size_vlan_params); 1150 if (err) 1151 goto out; 1152 1153 err = dsa_devlink_resource_register(ds, "FDB", hellcreek->fdb_entries, 1154 HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE, 1155 DEVLINK_RESOURCE_ID_PARENT_TOP, 1156 &size_fdb_params); 1157 if (err) 1158 goto out; 1159 1160 dsa_devlink_resource_occ_get_register(ds, 1161 HELLCREEK_DEVLINK_PARAM_ID_VLAN_TABLE, 1162 hellcreek_devlink_vlan_table_get, 1163 hellcreek); 1164 1165 dsa_devlink_resource_occ_get_register(ds, 1166 HELLCREEK_DEVLINK_PARAM_ID_FDB_TABLE, 1167 hellcreek_devlink_fdb_table_get, 1168 hellcreek); 1169 1170 return 0; 1171 1172 out: 1173 dsa_devlink_resources_unregister(ds); 1174 1175 return err; 1176 } 1177 1178 static int hellcreek_devlink_region_vlan_snapshot(struct devlink *dl, 1179 const struct devlink_region_ops *ops, 1180 struct netlink_ext_ack *extack, 1181 u8 **data) 1182 { 1183 struct hellcreek_devlink_vlan_entry *table, *entry; 1184 struct dsa_switch *ds = dsa_devlink_to_ds(dl); 1185 struct hellcreek *hellcreek = ds->priv; 1186 int i; 1187 1188 table = kcalloc(VLAN_N_VID, sizeof(*entry), GFP_KERNEL); 1189 if (!table) 1190 return -ENOMEM; 1191 1192 entry = table; 1193 1194 mutex_lock(&hellcreek->reg_lock); 1195 for (i = 0; i < VLAN_N_VID; ++i, ++entry) { 1196 entry->member = hellcreek->vidmbrcfg[i]; 1197 entry->vid = i; 1198 } 1199 mutex_unlock(&hellcreek->reg_lock); 1200 1201 *data = (u8 *)table; 1202 1203 return 0; 1204 } 1205 1206 static int hellcreek_devlink_region_fdb_snapshot(struct devlink *dl, 1207 const struct devlink_region_ops *ops, 1208 struct netlink_ext_ack *extack, 1209 u8 **data) 1210 { 1211 struct dsa_switch *ds = dsa_devlink_to_ds(dl); 1212 struct hellcreek_fdb_entry *table, *entry; 1213 struct hellcreek *hellcreek = ds->priv; 1214 size_t i; 1215 1216 table = kcalloc(hellcreek->fdb_entries, sizeof(*entry), GFP_KERNEL); 1217 if (!table) 1218 return -ENOMEM; 1219 1220 entry = table; 1221 1222 mutex_lock(&hellcreek->reg_lock); 1223 1224 /* Start table read */ 1225 hellcreek_read(hellcreek, HR_FDBMAX); 1226 hellcreek_write(hellcreek, 0x00, HR_FDBMAX); 1227 1228 for (i = 0; i < hellcreek->fdb_entries; ++i, ++entry) { 1229 /* Read current entry */ 1230 hellcreek_populate_fdb_entry(hellcreek, entry, i); 1231 1232 /* Advance read pointer */ 1233 hellcreek_write(hellcreek, 0x00, HR_FDBRDH); 1234 } 1235 1236 mutex_unlock(&hellcreek->reg_lock); 1237 1238 *data = (u8 *)table; 1239 1240 return 0; 1241 } 1242 1243 static struct devlink_region_ops hellcreek_region_vlan_ops = { 1244 .name = "vlan", 1245 .snapshot = hellcreek_devlink_region_vlan_snapshot, 1246 .destructor = kfree, 1247 }; 1248 1249 static struct devlink_region_ops hellcreek_region_fdb_ops = { 1250 .name = "fdb", 1251 .snapshot = hellcreek_devlink_region_fdb_snapshot, 1252 .destructor = kfree, 1253 }; 1254 1255 static int hellcreek_setup_devlink_regions(struct dsa_switch *ds) 1256 { 1257 struct hellcreek *hellcreek = ds->priv; 1258 struct devlink_region_ops *ops; 1259 struct devlink_region *region; 1260 u64 size; 1261 int ret; 1262 1263 /* VLAN table */ 1264 size = VLAN_N_VID * sizeof(struct hellcreek_devlink_vlan_entry); 1265 ops = &hellcreek_region_vlan_ops; 1266 1267 region = dsa_devlink_region_create(ds, ops, 1, size); 1268 if (IS_ERR(region)) 1269 return PTR_ERR(region); 1270 1271 hellcreek->vlan_region = region; 1272 1273 /* FDB table */ 1274 size = hellcreek->fdb_entries * sizeof(struct hellcreek_fdb_entry); 1275 ops = &hellcreek_region_fdb_ops; 1276 1277 region = dsa_devlink_region_create(ds, ops, 1, size); 1278 if (IS_ERR(region)) { 1279 ret = PTR_ERR(region); 1280 goto err_fdb; 1281 } 1282 1283 hellcreek->fdb_region = region; 1284 1285 return 0; 1286 1287 err_fdb: 1288 dsa_devlink_region_destroy(hellcreek->vlan_region); 1289 1290 return ret; 1291 } 1292 1293 static void hellcreek_teardown_devlink_regions(struct dsa_switch *ds) 1294 { 1295 struct hellcreek *hellcreek = ds->priv; 1296 1297 dsa_devlink_region_destroy(hellcreek->fdb_region); 1298 dsa_devlink_region_destroy(hellcreek->vlan_region); 1299 } 1300 1301 static int hellcreek_setup(struct dsa_switch *ds) 1302 { 1303 struct hellcreek *hellcreek = ds->priv; 1304 u16 swcfg = 0; 1305 int ret, i; 1306 1307 dev_dbg(hellcreek->dev, "Set up the switch\n"); 1308 1309 /* Let's go */ 1310 ret = hellcreek_enable_ip_core(hellcreek); 1311 if (ret) { 1312 dev_err(hellcreek->dev, "Failed to enable IP core!\n"); 1313 return ret; 1314 } 1315 1316 /* Enable CPU/Tunnel ports */ 1317 hellcreek_setup_cpu_and_tunnel_port(hellcreek); 1318 1319 /* Switch config: Keep defaults, enable FDB aging and learning and tag 1320 * each frame from/to cpu port for DSA tagging. Also enable the length 1321 * aware shaping mode. This eliminates the need for Qbv guard bands. 1322 */ 1323 swcfg |= HR_SWCFG_FDBAGE_EN | 1324 HR_SWCFG_FDBLRN_EN | 1325 HR_SWCFG_ALWAYS_OBT | 1326 (HR_SWCFG_LAS_ON << HR_SWCFG_LAS_MODE_SHIFT); 1327 hellcreek->swcfg = swcfg; 1328 hellcreek_write(hellcreek, swcfg, HR_SWCFG); 1329 1330 /* Initial vlan membership to reflect port separation */ 1331 for (i = 0; i < ds->num_ports; ++i) { 1332 if (!dsa_is_user_port(ds, i)) 1333 continue; 1334 1335 hellcreek_setup_vlan_membership(ds, i, true); 1336 } 1337 1338 /* Configure PCP <-> TC mapping */ 1339 hellcreek_setup_tc_identity_mapping(hellcreek); 1340 1341 /* The VLAN awareness is a global switch setting. Therefore, mixed vlan 1342 * filtering setups are not supported. 1343 */ 1344 ds->vlan_filtering_is_global = true; 1345 1346 /* Intercept _all_ PTP multicast traffic */ 1347 ret = hellcreek_setup_fdb(hellcreek); 1348 if (ret) { 1349 dev_err(hellcreek->dev, 1350 "Failed to insert static PTP FDB entries\n"); 1351 return ret; 1352 } 1353 1354 /* Register devlink resources with DSA */ 1355 ret = hellcreek_setup_devlink_resources(ds); 1356 if (ret) { 1357 dev_err(hellcreek->dev, 1358 "Failed to setup devlink resources!\n"); 1359 return ret; 1360 } 1361 1362 ret = hellcreek_setup_devlink_regions(ds); 1363 if (ret) { 1364 dev_err(hellcreek->dev, 1365 "Failed to setup devlink regions!\n"); 1366 goto err_regions; 1367 } 1368 1369 return 0; 1370 1371 err_regions: 1372 dsa_devlink_resources_unregister(ds); 1373 1374 return ret; 1375 } 1376 1377 static void hellcreek_teardown(struct dsa_switch *ds) 1378 { 1379 hellcreek_teardown_devlink_regions(ds); 1380 dsa_devlink_resources_unregister(ds); 1381 } 1382 1383 static void hellcreek_phylink_validate(struct dsa_switch *ds, int port, 1384 unsigned long *supported, 1385 struct phylink_link_state *state) 1386 { 1387 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; 1388 struct hellcreek *hellcreek = ds->priv; 1389 1390 dev_dbg(hellcreek->dev, "Phylink validate for port %d\n", port); 1391 1392 /* The MAC settings are a hardware configuration option and cannot be 1393 * changed at run time or by strapping. Therefore the attached PHYs 1394 * should be programmed to only advertise settings which are supported 1395 * by the hardware. 1396 */ 1397 if (hellcreek->pdata->is_100_mbits) 1398 phylink_set(mask, 100baseT_Full); 1399 else 1400 phylink_set(mask, 1000baseT_Full); 1401 1402 bitmap_and(supported, supported, mask, 1403 __ETHTOOL_LINK_MODE_MASK_NBITS); 1404 bitmap_and(state->advertising, state->advertising, mask, 1405 __ETHTOOL_LINK_MODE_MASK_NBITS); 1406 } 1407 1408 static int 1409 hellcreek_port_prechangeupper(struct dsa_switch *ds, int port, 1410 struct netdev_notifier_changeupper_info *info) 1411 { 1412 struct hellcreek *hellcreek = ds->priv; 1413 bool used = true; 1414 int ret = -EBUSY; 1415 u16 vid; 1416 int i; 1417 1418 dev_dbg(hellcreek->dev, "Pre change upper for port %d\n", port); 1419 1420 /* 1421 * Deny VLAN devices on top of lan ports with the same VLAN ids, because 1422 * it breaks the port separation due to the private VLANs. Example: 1423 * 1424 * lan0.100 *and* lan1.100 cannot be used in parallel. However, lan0.99 1425 * and lan1.100 works. 1426 */ 1427 1428 if (!is_vlan_dev(info->upper_dev)) 1429 return 0; 1430 1431 vid = vlan_dev_vlan_id(info->upper_dev); 1432 1433 /* For all ports, check bitmaps */ 1434 mutex_lock(&hellcreek->vlan_lock); 1435 for (i = 0; i < hellcreek->pdata->num_ports; ++i) { 1436 if (!dsa_is_user_port(ds, i)) 1437 continue; 1438 1439 if (port == i) 1440 continue; 1441 1442 used = used && test_bit(vid, hellcreek->ports[i].vlan_dev_bitmap); 1443 } 1444 1445 if (used) 1446 goto out; 1447 1448 /* Update bitmap */ 1449 set_bit(vid, hellcreek->ports[port].vlan_dev_bitmap); 1450 1451 ret = 0; 1452 1453 out: 1454 mutex_unlock(&hellcreek->vlan_lock); 1455 1456 return ret; 1457 } 1458 1459 static void hellcreek_setup_gcl(struct hellcreek *hellcreek, int port, 1460 const struct tc_taprio_qopt_offload *schedule) 1461 { 1462 const struct tc_taprio_sched_entry *cur, *initial, *next; 1463 size_t i; 1464 1465 cur = initial = &schedule->entries[0]; 1466 next = cur + 1; 1467 1468 for (i = 1; i <= schedule->num_entries; ++i) { 1469 u16 data; 1470 u8 gates; 1471 1472 cur++; 1473 next++; 1474 1475 if (i == schedule->num_entries) 1476 gates = initial->gate_mask ^ 1477 cur->gate_mask; 1478 else 1479 gates = next->gate_mask ^ 1480 cur->gate_mask; 1481 1482 data = gates; 1483 1484 if (i == schedule->num_entries) 1485 data |= TR_GCLDAT_GCLWRLAST; 1486 1487 /* Gates states */ 1488 hellcreek_write(hellcreek, data, TR_GCLDAT); 1489 1490 /* Time interval */ 1491 hellcreek_write(hellcreek, 1492 cur->interval & 0x0000ffff, 1493 TR_GCLTIL); 1494 hellcreek_write(hellcreek, 1495 (cur->interval & 0xffff0000) >> 16, 1496 TR_GCLTIH); 1497 1498 /* Commit entry */ 1499 data = ((i - 1) << TR_GCLCMD_GCLWRADR_SHIFT) | 1500 (initial->gate_mask << 1501 TR_GCLCMD_INIT_GATE_STATES_SHIFT); 1502 hellcreek_write(hellcreek, data, TR_GCLCMD); 1503 } 1504 } 1505 1506 static void hellcreek_set_cycle_time(struct hellcreek *hellcreek, 1507 const struct tc_taprio_qopt_offload *schedule) 1508 { 1509 u32 cycle_time = schedule->cycle_time; 1510 1511 hellcreek_write(hellcreek, cycle_time & 0x0000ffff, TR_CTWRL); 1512 hellcreek_write(hellcreek, (cycle_time & 0xffff0000) >> 16, TR_CTWRH); 1513 } 1514 1515 static void hellcreek_switch_schedule(struct hellcreek *hellcreek, 1516 ktime_t start_time) 1517 { 1518 struct timespec64 ts = ktime_to_timespec64(start_time); 1519 1520 /* Start schedule at this point of time */ 1521 hellcreek_write(hellcreek, ts.tv_nsec & 0x0000ffff, TR_ESTWRL); 1522 hellcreek_write(hellcreek, (ts.tv_nsec & 0xffff0000) >> 16, TR_ESTWRH); 1523 1524 /* Arm timer, set seconds and switch schedule */ 1525 hellcreek_write(hellcreek, TR_ESTCMD_ESTARM | TR_ESTCMD_ESTSWCFG | 1526 ((ts.tv_sec & TR_ESTCMD_ESTSEC_MASK) << 1527 TR_ESTCMD_ESTSEC_SHIFT), TR_ESTCMD); 1528 } 1529 1530 static bool hellcreek_schedule_startable(struct hellcreek *hellcreek, int port) 1531 { 1532 struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; 1533 s64 base_time_ns, current_ns; 1534 1535 /* The switch allows a schedule to be started only eight seconds within 1536 * the future. Therefore, check the current PTP time if the schedule is 1537 * startable or not. 1538 */ 1539 1540 /* Use the "cached" time. That should be alright, as it's updated quite 1541 * frequently in the PTP code. 1542 */ 1543 mutex_lock(&hellcreek->ptp_lock); 1544 current_ns = hellcreek->seconds * NSEC_PER_SEC + hellcreek->last_ts; 1545 mutex_unlock(&hellcreek->ptp_lock); 1546 1547 /* Calculate difference to admin base time */ 1548 base_time_ns = ktime_to_ns(hellcreek_port->current_schedule->base_time); 1549 1550 return base_time_ns - current_ns < (s64)8 * NSEC_PER_SEC; 1551 } 1552 1553 static void hellcreek_start_schedule(struct hellcreek *hellcreek, int port) 1554 { 1555 struct hellcreek_port *hellcreek_port = &hellcreek->ports[port]; 1556 ktime_t base_time, current_time; 1557 s64 current_ns; 1558 u32 cycle_time; 1559 1560 /* First select port */ 1561 hellcreek_select_tgd(hellcreek, port); 1562 1563 /* Forward base time into the future if needed */ 1564 mutex_lock(&hellcreek->ptp_lock); 1565 current_ns = hellcreek->seconds * NSEC_PER_SEC + hellcreek->last_ts; 1566 mutex_unlock(&hellcreek->ptp_lock); 1567 1568 current_time = ns_to_ktime(current_ns); 1569 base_time = hellcreek_port->current_schedule->base_time; 1570 cycle_time = hellcreek_port->current_schedule->cycle_time; 1571 1572 if (ktime_compare(current_time, base_time) > 0) { 1573 s64 n; 1574 1575 n = div64_s64(ktime_sub_ns(current_time, base_time), 1576 cycle_time); 1577 base_time = ktime_add_ns(base_time, (n + 1) * cycle_time); 1578 } 1579 1580 /* Set admin base time and switch schedule */ 1581 hellcreek_switch_schedule(hellcreek, base_time); 1582 1583 taprio_offload_free(hellcreek_port->current_schedule); 1584 hellcreek_port->current_schedule = NULL; 1585 1586 dev_dbg(hellcreek->dev, "Armed EST timer for port %d\n", 1587 hellcreek_port->port); 1588 } 1589 1590 static void hellcreek_check_schedule(struct work_struct *work) 1591 { 1592 struct delayed_work *dw = to_delayed_work(work); 1593 struct hellcreek_port *hellcreek_port; 1594 struct hellcreek *hellcreek; 1595 bool startable; 1596 1597 hellcreek_port = dw_to_hellcreek_port(dw); 1598 hellcreek = hellcreek_port->hellcreek; 1599 1600 mutex_lock(&hellcreek->reg_lock); 1601 1602 /* Check starting time */ 1603 startable = hellcreek_schedule_startable(hellcreek, 1604 hellcreek_port->port); 1605 if (startable) { 1606 hellcreek_start_schedule(hellcreek, hellcreek_port->port); 1607 mutex_unlock(&hellcreek->reg_lock); 1608 return; 1609 } 1610 1611 mutex_unlock(&hellcreek->reg_lock); 1612 1613 /* Reschedule */ 1614 schedule_delayed_work(&hellcreek_port->schedule_work, 1615 HELLCREEK_SCHEDULE_PERIOD); 1616 } 1617 1618 static int hellcreek_port_set_schedule(struct dsa_switch *ds, int port, 1619 struct tc_taprio_qopt_offload *taprio) 1620 { 1621 struct hellcreek *hellcreek = ds->priv; 1622 struct hellcreek_port *hellcreek_port; 1623 bool startable; 1624 u16 ctrl; 1625 1626 hellcreek_port = &hellcreek->ports[port]; 1627 1628 dev_dbg(hellcreek->dev, "Configure traffic schedule on port %d\n", 1629 port); 1630 1631 /* First cancel delayed work */ 1632 cancel_delayed_work_sync(&hellcreek_port->schedule_work); 1633 1634 mutex_lock(&hellcreek->reg_lock); 1635 1636 if (hellcreek_port->current_schedule) { 1637 taprio_offload_free(hellcreek_port->current_schedule); 1638 hellcreek_port->current_schedule = NULL; 1639 } 1640 hellcreek_port->current_schedule = taprio_offload_get(taprio); 1641 1642 /* Then select port */ 1643 hellcreek_select_tgd(hellcreek, port); 1644 1645 /* Enable gating and keep defaults */ 1646 ctrl = (0xff << TR_TGDCTRL_ADMINGATESTATES_SHIFT) | TR_TGDCTRL_GATE_EN; 1647 hellcreek_write(hellcreek, ctrl, TR_TGDCTRL); 1648 1649 /* Cancel pending schedule */ 1650 hellcreek_write(hellcreek, 0x00, TR_ESTCMD); 1651 1652 /* Setup a new schedule */ 1653 hellcreek_setup_gcl(hellcreek, port, hellcreek_port->current_schedule); 1654 1655 /* Configure cycle time */ 1656 hellcreek_set_cycle_time(hellcreek, hellcreek_port->current_schedule); 1657 1658 /* Check starting time */ 1659 startable = hellcreek_schedule_startable(hellcreek, port); 1660 if (startable) { 1661 hellcreek_start_schedule(hellcreek, port); 1662 mutex_unlock(&hellcreek->reg_lock); 1663 return 0; 1664 } 1665 1666 mutex_unlock(&hellcreek->reg_lock); 1667 1668 /* Schedule periodic schedule check */ 1669 schedule_delayed_work(&hellcreek_port->schedule_work, 1670 HELLCREEK_SCHEDULE_PERIOD); 1671 1672 return 0; 1673 } 1674 1675 static int hellcreek_port_del_schedule(struct dsa_switch *ds, int port) 1676 { 1677 struct hellcreek *hellcreek = ds->priv; 1678 struct hellcreek_port *hellcreek_port; 1679 1680 hellcreek_port = &hellcreek->ports[port]; 1681 1682 dev_dbg(hellcreek->dev, "Remove traffic schedule on port %d\n", port); 1683 1684 /* First cancel delayed work */ 1685 cancel_delayed_work_sync(&hellcreek_port->schedule_work); 1686 1687 mutex_lock(&hellcreek->reg_lock); 1688 1689 if (hellcreek_port->current_schedule) { 1690 taprio_offload_free(hellcreek_port->current_schedule); 1691 hellcreek_port->current_schedule = NULL; 1692 } 1693 1694 /* Then select port */ 1695 hellcreek_select_tgd(hellcreek, port); 1696 1697 /* Disable gating and return to regular switching flow */ 1698 hellcreek_write(hellcreek, 0xff << TR_TGDCTRL_ADMINGATESTATES_SHIFT, 1699 TR_TGDCTRL); 1700 1701 mutex_unlock(&hellcreek->reg_lock); 1702 1703 return 0; 1704 } 1705 1706 static bool hellcreek_validate_schedule(struct hellcreek *hellcreek, 1707 struct tc_taprio_qopt_offload *schedule) 1708 { 1709 size_t i; 1710 1711 /* Does this hellcreek version support Qbv in hardware? */ 1712 if (!hellcreek->pdata->qbv_support) 1713 return false; 1714 1715 /* cycle time can only be 32bit */ 1716 if (schedule->cycle_time > (u32)-1) 1717 return false; 1718 1719 /* cycle time extension is not supported */ 1720 if (schedule->cycle_time_extension) 1721 return false; 1722 1723 /* Only set command is supported */ 1724 for (i = 0; i < schedule->num_entries; ++i) 1725 if (schedule->entries[i].command != TC_TAPRIO_CMD_SET_GATES) 1726 return false; 1727 1728 return true; 1729 } 1730 1731 static int hellcreek_port_setup_tc(struct dsa_switch *ds, int port, 1732 enum tc_setup_type type, void *type_data) 1733 { 1734 struct tc_taprio_qopt_offload *taprio = type_data; 1735 struct hellcreek *hellcreek = ds->priv; 1736 1737 if (type != TC_SETUP_QDISC_TAPRIO) 1738 return -EOPNOTSUPP; 1739 1740 if (!hellcreek_validate_schedule(hellcreek, taprio)) 1741 return -EOPNOTSUPP; 1742 1743 if (taprio->enable) 1744 return hellcreek_port_set_schedule(ds, port, taprio); 1745 1746 return hellcreek_port_del_schedule(ds, port); 1747 } 1748 1749 static const struct dsa_switch_ops hellcreek_ds_ops = { 1750 .devlink_info_get = hellcreek_devlink_info_get, 1751 .get_ethtool_stats = hellcreek_get_ethtool_stats, 1752 .get_sset_count = hellcreek_get_sset_count, 1753 .get_strings = hellcreek_get_strings, 1754 .get_tag_protocol = hellcreek_get_tag_protocol, 1755 .get_ts_info = hellcreek_get_ts_info, 1756 .phylink_validate = hellcreek_phylink_validate, 1757 .port_bridge_flags = hellcreek_bridge_flags, 1758 .port_bridge_join = hellcreek_port_bridge_join, 1759 .port_bridge_leave = hellcreek_port_bridge_leave, 1760 .port_disable = hellcreek_port_disable, 1761 .port_enable = hellcreek_port_enable, 1762 .port_fdb_add = hellcreek_fdb_add, 1763 .port_fdb_del = hellcreek_fdb_del, 1764 .port_fdb_dump = hellcreek_fdb_dump, 1765 .port_hwtstamp_set = hellcreek_port_hwtstamp_set, 1766 .port_hwtstamp_get = hellcreek_port_hwtstamp_get, 1767 .port_pre_bridge_flags = hellcreek_pre_bridge_flags, 1768 .port_prechangeupper = hellcreek_port_prechangeupper, 1769 .port_rxtstamp = hellcreek_port_rxtstamp, 1770 .port_setup_tc = hellcreek_port_setup_tc, 1771 .port_stp_state_set = hellcreek_port_stp_state_set, 1772 .port_txtstamp = hellcreek_port_txtstamp, 1773 .port_vlan_add = hellcreek_vlan_add, 1774 .port_vlan_del = hellcreek_vlan_del, 1775 .port_vlan_filtering = hellcreek_vlan_filtering, 1776 .setup = hellcreek_setup, 1777 .teardown = hellcreek_teardown, 1778 }; 1779 1780 static int hellcreek_probe(struct platform_device *pdev) 1781 { 1782 struct device *dev = &pdev->dev; 1783 struct hellcreek *hellcreek; 1784 struct resource *res; 1785 int ret, i; 1786 1787 hellcreek = devm_kzalloc(dev, sizeof(*hellcreek), GFP_KERNEL); 1788 if (!hellcreek) 1789 return -ENOMEM; 1790 1791 hellcreek->vidmbrcfg = devm_kcalloc(dev, VLAN_N_VID, 1792 sizeof(*hellcreek->vidmbrcfg), 1793 GFP_KERNEL); 1794 if (!hellcreek->vidmbrcfg) 1795 return -ENOMEM; 1796 1797 hellcreek->pdata = of_device_get_match_data(dev); 1798 1799 hellcreek->ports = devm_kcalloc(dev, hellcreek->pdata->num_ports, 1800 sizeof(*hellcreek->ports), 1801 GFP_KERNEL); 1802 if (!hellcreek->ports) 1803 return -ENOMEM; 1804 1805 for (i = 0; i < hellcreek->pdata->num_ports; ++i) { 1806 struct hellcreek_port *port = &hellcreek->ports[i]; 1807 1808 port->counter_values = 1809 devm_kcalloc(dev, 1810 ARRAY_SIZE(hellcreek_counter), 1811 sizeof(*port->counter_values), 1812 GFP_KERNEL); 1813 if (!port->counter_values) 1814 return -ENOMEM; 1815 1816 port->vlan_dev_bitmap = 1817 devm_kcalloc(dev, 1818 BITS_TO_LONGS(VLAN_N_VID), 1819 sizeof(unsigned long), 1820 GFP_KERNEL); 1821 if (!port->vlan_dev_bitmap) 1822 return -ENOMEM; 1823 1824 port->hellcreek = hellcreek; 1825 port->port = i; 1826 1827 INIT_DELAYED_WORK(&port->schedule_work, 1828 hellcreek_check_schedule); 1829 } 1830 1831 mutex_init(&hellcreek->reg_lock); 1832 mutex_init(&hellcreek->vlan_lock); 1833 mutex_init(&hellcreek->ptp_lock); 1834 1835 hellcreek->dev = dev; 1836 1837 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tsn"); 1838 if (!res) { 1839 dev_err(dev, "No memory region provided!\n"); 1840 return -ENODEV; 1841 } 1842 1843 hellcreek->base = devm_ioremap_resource(dev, res); 1844 if (IS_ERR(hellcreek->base)) 1845 return PTR_ERR(hellcreek->base); 1846 1847 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ptp"); 1848 if (!res) { 1849 dev_err(dev, "No PTP memory region provided!\n"); 1850 return -ENODEV; 1851 } 1852 1853 hellcreek->ptp_base = devm_ioremap_resource(dev, res); 1854 if (IS_ERR(hellcreek->ptp_base)) 1855 return PTR_ERR(hellcreek->ptp_base); 1856 1857 ret = hellcreek_detect(hellcreek); 1858 if (ret) { 1859 dev_err(dev, "No (known) chip found!\n"); 1860 return ret; 1861 } 1862 1863 ret = hellcreek_wait_until_ready(hellcreek); 1864 if (ret) { 1865 dev_err(dev, "Switch didn't become ready!\n"); 1866 return ret; 1867 } 1868 1869 hellcreek_feature_detect(hellcreek); 1870 1871 hellcreek->ds = devm_kzalloc(dev, sizeof(*hellcreek->ds), GFP_KERNEL); 1872 if (!hellcreek->ds) 1873 return -ENOMEM; 1874 1875 hellcreek->ds->dev = dev; 1876 hellcreek->ds->priv = hellcreek; 1877 hellcreek->ds->ops = &hellcreek_ds_ops; 1878 hellcreek->ds->num_ports = hellcreek->pdata->num_ports; 1879 hellcreek->ds->num_tx_queues = HELLCREEK_NUM_EGRESS_QUEUES; 1880 1881 ret = dsa_register_switch(hellcreek->ds); 1882 if (ret) { 1883 dev_err_probe(dev, ret, "Unable to register switch\n"); 1884 return ret; 1885 } 1886 1887 ret = hellcreek_ptp_setup(hellcreek); 1888 if (ret) { 1889 dev_err(dev, "Failed to setup PTP!\n"); 1890 goto err_ptp_setup; 1891 } 1892 1893 ret = hellcreek_hwtstamp_setup(hellcreek); 1894 if (ret) { 1895 dev_err(dev, "Failed to setup hardware timestamping!\n"); 1896 goto err_tstamp_setup; 1897 } 1898 1899 platform_set_drvdata(pdev, hellcreek); 1900 1901 return 0; 1902 1903 err_tstamp_setup: 1904 hellcreek_ptp_free(hellcreek); 1905 err_ptp_setup: 1906 dsa_unregister_switch(hellcreek->ds); 1907 1908 return ret; 1909 } 1910 1911 static int hellcreek_remove(struct platform_device *pdev) 1912 { 1913 struct hellcreek *hellcreek = platform_get_drvdata(pdev); 1914 1915 hellcreek_hwtstamp_free(hellcreek); 1916 hellcreek_ptp_free(hellcreek); 1917 dsa_unregister_switch(hellcreek->ds); 1918 platform_set_drvdata(pdev, NULL); 1919 1920 return 0; 1921 } 1922 1923 static const struct hellcreek_platform_data de1soc_r1_pdata = { 1924 .name = "r4c30", 1925 .num_ports = 4, 1926 .is_100_mbits = 1, 1927 .qbv_support = 1, 1928 .qbv_on_cpu_port = 1, 1929 .qbu_support = 0, 1930 .module_id = 0x4c30, 1931 }; 1932 1933 static const struct of_device_id hellcreek_of_match[] = { 1934 { 1935 .compatible = "hirschmann,hellcreek-de1soc-r1", 1936 .data = &de1soc_r1_pdata, 1937 }, 1938 { /* sentinel */ }, 1939 }; 1940 MODULE_DEVICE_TABLE(of, hellcreek_of_match); 1941 1942 static struct platform_driver hellcreek_driver = { 1943 .probe = hellcreek_probe, 1944 .remove = hellcreek_remove, 1945 .driver = { 1946 .name = "hellcreek", 1947 .of_match_table = hellcreek_of_match, 1948 }, 1949 }; 1950 module_platform_driver(hellcreek_driver); 1951 1952 MODULE_AUTHOR("Kurt Kanzenbach <kurt@linutronix.de>"); 1953 MODULE_DESCRIPTION("Hirschmann Hellcreek driver"); 1954 MODULE_LICENSE("Dual MIT/GPL"); 1955