FILE
qca8k-common.c
File preview with syntax highlighting.
linux-6.19.14/drivers/net/dsa/qca/qca8k-common.c
1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (C) 2009 Felix Fietkau <nbd@nbd.name> 4 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> 5 * Copyright (c) 2015, 2019, The Linux Foundation. All rights reserved. 6 * Copyright (c) 2016 John Crispin <john@phrozen.org> 7 */ 8 9#include <linux/netdevice.h> 10#include <net/dsa.h> 11#include <linux/if_bridge.h> 12 13#include "qca8k.h" 14 15#define MIB_DESC(_s, _o, _n) \ 16 { \ 17 .size = (_s), \ 18 .offset = (_o), \ 19 .name = (_n), \ 20 } 21 22const struct qca8k_mib_desc ar8327_mib[] = { 23 MIB_DESC(1, 0x00, "RxBroad"), 24 MIB_DESC(1, 0x04, "RxPause"), 25 MIB_DESC(1, 0x08, "RxMulti"), 26 MIB_DESC(1, 0x0c, "RxFcsErr"), 27 MIB_DESC(1, 0x10, "RxAlignErr"), 28 MIB_DESC(1, 0x14, "RxRunt"), 29 MIB_DESC(1, 0x18, "RxFragment"), 30 MIB_DESC(1, 0x1c, "Rx64Byte"), 31 MIB_DESC(1, 0x20, "Rx128Byte"), 32 MIB_DESC(1, 0x24, "Rx256Byte"), 33 MIB_DESC(1, 0x28, "Rx512Byte"), 34 MIB_DESC(1, 0x2c, "Rx1024Byte"), 35 MIB_DESC(1, 0x30, "Rx1518Byte"), 36 MIB_DESC(1, 0x34, "RxMaxByte"), 37 MIB_DESC(1, 0x38, "RxTooLong"), 38 MIB_DESC(2, 0x3c, "RxGoodByte"), 39 MIB_DESC(2, 0x44, "RxBadByte"), 40 MIB_DESC(1, 0x4c, "RxOverFlow"), 41 MIB_DESC(1, 0x50, "Filtered"), 42 MIB_DESC(1, 0x54, "TxBroad"), 43 MIB_DESC(1, 0x58, "TxPause"), 44 MIB_DESC(1, 0x5c, "TxMulti"), 45 MIB_DESC(1, 0x60, "TxUnderRun"), 46 MIB_DESC(1, 0x64, "Tx64Byte"), 47 MIB_DESC(1, 0x68, "Tx128Byte"), 48 MIB_DESC(1, 0x6c, "Tx256Byte"), 49 MIB_DESC(1, 0x70, "Tx512Byte"), 50 MIB_DESC(1, 0x74, "Tx1024Byte"), 51 MIB_DESC(1, 0x78, "Tx1518Byte"), 52 MIB_DESC(1, 0x7c, "TxMaxByte"), 53 MIB_DESC(1, 0x80, "TxOverSize"), 54 MIB_DESC(2, 0x84, "TxByte"), 55 MIB_DESC(1, 0x8c, "TxCollision"), 56 MIB_DESC(1, 0x90, "TxAbortCol"), 57 MIB_DESC(1, 0x94, "TxMultiCol"), 58 MIB_DESC(1, 0x98, "TxSingleCol"), 59 MIB_DESC(1, 0x9c, "TxExcDefer"), 60 MIB_DESC(1, 0xa0, "TxDefer"), 61 MIB_DESC(1, 0xa4, "TxLateCol"), 62 MIB_DESC(1, 0xa8, "RXUnicast"), 63 MIB_DESC(1, 0xac, "TXUnicast"), 64}; 65 66int qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val) 67{ 68 return regmap_read(priv->regmap, reg, val); 69} 70 71int qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val) 72{ 73 return regmap_write(priv->regmap, reg, val); 74} 75 76int qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val) 77{ 78 return regmap_update_bits(priv->regmap, reg, mask, write_val); 79} 80 81static const struct regmap_range qca8k_readable_ranges[] = { 82 regmap_reg_range(0x0000, 0x00e4), /* Global control */ 83 regmap_reg_range(0x0100, 0x0168), /* EEE control */ 84 regmap_reg_range(0x0200, 0x0270), /* Parser control */ 85 regmap_reg_range(0x0400, 0x0454), /* ACL */ 86 regmap_reg_range(0x0600, 0x0718), /* Lookup */ 87 regmap_reg_range(0x0800, 0x0b70), /* QM */ 88 regmap_reg_range(0x0c00, 0x0c80), /* PKT */ 89 regmap_reg_range(0x0e00, 0x0e98), /* L3 */ 90 regmap_reg_range(0x1000, 0x10ac), /* MIB - Port0 */ 91 regmap_reg_range(0x1100, 0x11ac), /* MIB - Port1 */ 92 regmap_reg_range(0x1200, 0x12ac), /* MIB - Port2 */ 93 regmap_reg_range(0x1300, 0x13ac), /* MIB - Port3 */ 94 regmap_reg_range(0x1400, 0x14ac), /* MIB - Port4 */ 95 regmap_reg_range(0x1500, 0x15ac), /* MIB - Port5 */ 96 regmap_reg_range(0x1600, 0x16ac), /* MIB - Port6 */ 97}; 98 99const struct regmap_access_table qca8k_readable_table = { 100 .yes_ranges = qca8k_readable_ranges, 101 .n_yes_ranges = ARRAY_SIZE(qca8k_readable_ranges), 102}; 103 104static int qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask) 105{ 106 u32 val; 107 108 return regmap_read_poll_timeout(priv->regmap, reg, val, !(val & mask), 0, 109 QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC); 110} 111 112static int qca8k_fdb_read(struct qca8k_priv *priv, struct qca8k_fdb *fdb) 113{ 114 u32 reg[QCA8K_ATU_TABLE_SIZE]; 115 int ret; 116 117 /* load the ARL table into an array */ 118 ret = regmap_bulk_read(priv->regmap, QCA8K_REG_ATU_DATA0, reg, 119 QCA8K_ATU_TABLE_SIZE); 120 if (ret) 121 return ret; 122 123 /* vid - 83:72 */ 124 fdb->vid = FIELD_GET(QCA8K_ATU_VID_MASK, reg[2]); 125 /* aging - 67:64 */ 126 fdb->aging = FIELD_GET(QCA8K_ATU_STATUS_MASK, reg[2]); 127 /* portmask - 54:48 */ 128 fdb->port_mask = FIELD_GET(QCA8K_ATU_PORT_MASK, reg[1]); 129 /* mac - 47:0 */ 130 fdb->mac[0] = FIELD_GET(QCA8K_ATU_ADDR0_MASK, reg[1]); 131 fdb->mac[1] = FIELD_GET(QCA8K_ATU_ADDR1_MASK, reg[1]); 132 fdb->mac[2] = FIELD_GET(QCA8K_ATU_ADDR2_MASK, reg[0]); 133 fdb->mac[3] = FIELD_GET(QCA8K_ATU_ADDR3_MASK, reg[0]); 134 fdb->mac[4] = FIELD_GET(QCA8K_ATU_ADDR4_MASK, reg[0]); 135 fdb->mac[5] = FIELD_GET(QCA8K_ATU_ADDR5_MASK, reg[0]); 136 137 return 0; 138} 139 140static void qca8k_fdb_write(struct qca8k_priv *priv, u16 vid, u8 port_mask, 141 const u8 *mac, u8 aging) 142{ 143 u32 reg[QCA8K_ATU_TABLE_SIZE] = { 0 }; 144 145 /* vid - 83:72 */ 146 reg[2] = FIELD_PREP(QCA8K_ATU_VID_MASK, vid); 147 /* aging - 67:64 */ 148 reg[2] |= FIELD_PREP(QCA8K_ATU_STATUS_MASK, aging); 149 /* portmask - 54:48 */ 150 reg[1] = FIELD_PREP(QCA8K_ATU_PORT_MASK, port_mask); 151 /* mac - 47:0 */ 152 reg[1] |= FIELD_PREP(QCA8K_ATU_ADDR0_MASK, mac[0]); 153 reg[1] |= FIELD_PREP(QCA8K_ATU_ADDR1_MASK, mac[1]); 154 reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR2_MASK, mac[2]); 155 reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR3_MASK, mac[3]); 156 reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR4_MASK, mac[4]); 157 reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR5_MASK, mac[5]); 158 159 /* load the array into the ARL table */ 160 regmap_bulk_write(priv->regmap, QCA8K_REG_ATU_DATA0, reg, 161 QCA8K_ATU_TABLE_SIZE); 162} 163 164static int qca8k_fdb_access(struct qca8k_priv *priv, enum qca8k_fdb_cmd cmd, 165 int port) 166{ 167 u32 reg; 168 int ret; 169 170 /* Set the command and FDB index */ 171 reg = QCA8K_ATU_FUNC_BUSY; 172 reg |= cmd; 173 if (port >= 0) { 174 reg |= QCA8K_ATU_FUNC_PORT_EN; 175 reg |= FIELD_PREP(QCA8K_ATU_FUNC_PORT_MASK, port); 176 } 177 178 /* Write the function register triggering the table access */ 179 ret = qca8k_write(priv, QCA8K_REG_ATU_FUNC, reg); 180 if (ret) 181 return ret; 182 183 /* wait for completion */ 184 ret = qca8k_busy_wait(priv, QCA8K_REG_ATU_FUNC, QCA8K_ATU_FUNC_BUSY); 185 if (ret) 186 return ret; 187 188 /* Check for table full violation when adding an entry */ 189 if (cmd == QCA8K_FDB_LOAD) { 190 ret = qca8k_read(priv, QCA8K_REG_ATU_FUNC, ®); 191 if (ret < 0) 192 return ret; 193 if (reg & QCA8K_ATU_FUNC_FULL) 194 return -1; 195 } 196 197 return 0; 198} 199 200static int qca8k_fdb_next(struct qca8k_priv *priv, struct qca8k_fdb *fdb, 201 int port) 202{ 203 int ret; 204 205 qca8k_fdb_write(priv, fdb->vid, fdb->port_mask, fdb->mac, fdb->aging); 206 ret = qca8k_fdb_access(priv, QCA8K_FDB_NEXT, port); 207 if (ret < 0) 208 return ret; 209 210 return qca8k_fdb_read(priv, fdb); 211} 212 213static int qca8k_fdb_add(struct qca8k_priv *priv, const u8 *mac, 214 u16 port_mask, u16 vid, u8 aging) 215{ 216 int ret; 217 218 mutex_lock(&priv->reg_mutex); 219 qca8k_fdb_write(priv, vid, port_mask, mac, aging); 220 ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1); 221 mutex_unlock(&priv->reg_mutex); 222 223 return ret; 224} 225 226static int qca8k_fdb_del(struct qca8k_priv *priv, const u8 *mac, 227 u16 port_mask, u16 vid) 228{ 229 int ret; 230 231 mutex_lock(&priv->reg_mutex); 232 qca8k_fdb_write(priv, vid, port_mask, mac, 0); 233 ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1); 234 mutex_unlock(&priv->reg_mutex); 235 236 return ret; 237} 238 239void qca8k_fdb_flush(struct qca8k_priv *priv) 240{ 241 mutex_lock(&priv->reg_mutex); 242 qca8k_fdb_access(priv, QCA8K_FDB_FLUSH, -1); 243 mutex_unlock(&priv->reg_mutex); 244} 245 246static int qca8k_fdb_search_and_insert(struct qca8k_priv *priv, u8 port_mask, 247 const u8 *mac, u16 vid, u8 aging) 248{ 249 struct qca8k_fdb fdb = { 0 }; 250 int ret; 251 252 mutex_lock(&priv->reg_mutex); 253 254 qca8k_fdb_write(priv, vid, 0, mac, 0); 255 ret = qca8k_fdb_access(priv, QCA8K_FDB_SEARCH, -1); 256 if (ret < 0) 257 goto exit; 258 259 ret = qca8k_fdb_read(priv, &fdb); 260 if (ret < 0) 261 goto exit; 262 263 /* Rule exist. Delete first */ 264 if (fdb.aging) { 265 ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1); 266 if (ret) 267 goto exit; 268 } else { 269 fdb.aging = aging; 270 } 271 272 /* Add port to fdb portmask */ 273 fdb.port_mask |= port_mask; 274 275 qca8k_fdb_write(priv, vid, fdb.port_mask, mac, fdb.aging); 276 ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1); 277 278exit: 279 mutex_unlock(&priv->reg_mutex); 280 return ret; 281} 282 283static int qca8k_fdb_search_and_del(struct qca8k_priv *priv, u8 port_mask, 284 const u8 *mac, u16 vid) 285{ 286 struct qca8k_fdb fdb = { 0 }; 287 int ret; 288 289 mutex_lock(&priv->reg_mutex); 290 291 qca8k_fdb_write(priv, vid, 0, mac, 0); 292 ret = qca8k_fdb_access(priv, QCA8K_FDB_SEARCH, -1); 293 if (ret < 0) 294 goto exit; 295 296 ret = qca8k_fdb_read(priv, &fdb); 297 if (ret < 0) 298 goto exit; 299 300 /* Rule doesn't exist. Why delete? */ 301 if (!fdb.aging) { 302 ret = -EINVAL; 303 goto exit; 304 } 305 306 ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1); 307 if (ret) 308 goto exit; 309 310 /* Only port in the rule is this port. Don't re insert */ 311 if (fdb.port_mask == port_mask) 312 goto exit; 313 314 /* Remove port from port mask */ 315 fdb.port_mask &= ~port_mask; 316 317 qca8k_fdb_write(priv, vid, fdb.port_mask, mac, fdb.aging); 318 ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1); 319 320exit: 321 mutex_unlock(&priv->reg_mutex); 322 return ret; 323} 324 325static int qca8k_vlan_access(struct qca8k_priv *priv, 326 enum qca8k_vlan_cmd cmd, u16 vid) 327{ 328 u32 reg; 329 int ret; 330 331 /* Set the command and VLAN index */ 332 reg = QCA8K_VTU_FUNC1_BUSY; 333 reg |= cmd; 334 reg |= FIELD_PREP(QCA8K_VTU_FUNC1_VID_MASK, vid); 335 336 /* Write the function register triggering the table access */ 337 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC1, reg); 338 if (ret) 339 return ret; 340 341 /* wait for completion */ 342 ret = qca8k_busy_wait(priv, QCA8K_REG_VTU_FUNC1, QCA8K_VTU_FUNC1_BUSY); 343 if (ret) 344 return ret; 345 346 /* Check for table full violation when adding an entry */ 347 if (cmd == QCA8K_VLAN_LOAD) { 348 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC1, ®); 349 if (ret < 0) 350 return ret; 351 if (reg & QCA8K_VTU_FUNC1_FULL) 352 return -ENOMEM; 353 } 354 355 return 0; 356} 357 358static int qca8k_vlan_add(struct qca8k_priv *priv, u8 port, u16 vid, 359 bool untagged) 360{ 361 u32 reg; 362 int ret; 363 364 /* We do the right thing with VLAN 0 and treat it as untagged while 365 * preserving the tag on egress. 366 */ 367 if (vid == 0) 368 return 0; 369 370 mutex_lock(&priv->reg_mutex); 371 ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid); 372 if (ret < 0) 373 goto out; 374 375 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®); 376 if (ret < 0) 377 goto out; 378 reg |= QCA8K_VTU_FUNC0_VALID | QCA8K_VTU_FUNC0_IVL_EN; 379 reg &= ~QCA8K_VTU_FUNC0_EG_MODE_PORT_MASK(port); 380 if (untagged) 381 reg |= QCA8K_VTU_FUNC0_EG_MODE_PORT_UNTAG(port); 382 else 383 reg |= QCA8K_VTU_FUNC0_EG_MODE_PORT_TAG(port); 384 385 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg); 386 if (ret) 387 goto out; 388 ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid); 389 390out: 391 mutex_unlock(&priv->reg_mutex); 392 393 return ret; 394} 395 396static int qca8k_vlan_del(struct qca8k_priv *priv, u8 port, u16 vid) 397{ 398 u32 reg, mask; 399 int ret, i; 400 bool del; 401 402 mutex_lock(&priv->reg_mutex); 403 ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid); 404 if (ret < 0) 405 goto out; 406 407 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®); 408 if (ret < 0) 409 goto out; 410 reg &= ~QCA8K_VTU_FUNC0_EG_MODE_PORT_MASK(port); 411 reg |= QCA8K_VTU_FUNC0_EG_MODE_PORT_NOT(port); 412 413 /* Check if we're the last member to be removed */ 414 del = true; 415 for (i = 0; i < QCA8K_NUM_PORTS; i++) { 416 mask = QCA8K_VTU_FUNC0_EG_MODE_PORT_NOT(i); 417 418 if ((reg & mask) != mask) { 419 del = false; 420 break; 421 } 422 } 423 424 if (del) { 425 ret = qca8k_vlan_access(priv, QCA8K_VLAN_PURGE, vid); 426 } else { 427 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg); 428 if (ret) 429 goto out; 430 ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid); 431 } 432 433out: 434 mutex_unlock(&priv->reg_mutex); 435 436 return ret; 437} 438 439int qca8k_mib_init(struct qca8k_priv *priv) 440{ 441 int ret; 442 443 mutex_lock(&priv->reg_mutex); 444 ret = regmap_update_bits(priv->regmap, QCA8K_REG_MIB, 445 QCA8K_MIB_FUNC | QCA8K_MIB_BUSY, 446 FIELD_PREP(QCA8K_MIB_FUNC, QCA8K_MIB_FLUSH) | 447 QCA8K_MIB_BUSY); 448 if (ret) 449 goto exit; 450 451 ret = qca8k_busy_wait(priv, QCA8K_REG_MIB, QCA8K_MIB_BUSY); 452 if (ret) 453 goto exit; 454 455 ret = regmap_set_bits(priv->regmap, QCA8K_REG_MIB, QCA8K_MIB_CPU_KEEP); 456 if (ret) 457 goto exit; 458 459 ret = qca8k_write(priv, QCA8K_REG_MODULE_EN, QCA8K_MODULE_EN_MIB); 460 461exit: 462 mutex_unlock(&priv->reg_mutex); 463 return ret; 464} 465 466void qca8k_port_set_status(struct qca8k_priv *priv, int port, int enable) 467{ 468 u32 mask = QCA8K_PORT_STATUS_TXMAC | QCA8K_PORT_STATUS_RXMAC; 469 470 /* Port 0 and 6 have no internal PHY */ 471 if (port > 0 && port < 6) 472 mask |= QCA8K_PORT_STATUS_LINK_AUTO; 473 474 if (enable) 475 regmap_set_bits(priv->regmap, QCA8K_REG_PORT_STATUS(port), mask); 476 else 477 regmap_clear_bits(priv->regmap, QCA8K_REG_PORT_STATUS(port), mask); 478} 479 480void qca8k_get_strings(struct dsa_switch *ds, int port, u32 stringset, 481 uint8_t *data) 482{ 483 struct qca8k_priv *priv = ds->priv; 484 int i; 485 486 if (stringset != ETH_SS_STATS) 487 return; 488 489 for (i = 0; i < priv->info->mib_count; i++) 490 ethtool_puts(&data, ar8327_mib[i].name); 491} 492 493void qca8k_get_ethtool_stats(struct dsa_switch *ds, int port, 494 uint64_t *data) 495{ 496 struct qca8k_priv *priv = ds->priv; 497 const struct qca8k_mib_desc *mib; 498 u32 reg, i, val; 499 u32 hi = 0; 500 int ret; 501 502 if (priv->mgmt_conduit && priv->info->ops->autocast_mib && 503 priv->info->ops->autocast_mib(ds, port, data) > 0) 504 return; 505 506 for (i = 0; i < priv->info->mib_count; i++) { 507 mib = &ar8327_mib[i]; 508 reg = QCA8K_PORT_MIB_COUNTER(port) + mib->offset; 509 510 ret = qca8k_read(priv, reg, &val); 511 if (ret < 0) 512 continue; 513 514 if (mib->size == 2) { 515 ret = qca8k_read(priv, reg + 4, &hi); 516 if (ret < 0) 517 continue; 518 } 519 520 data[i] = val; 521 if (mib->size == 2) 522 data[i] |= (u64)hi << 32; 523 } 524} 525 526int qca8k_get_sset_count(struct dsa_switch *ds, int port, int sset) 527{ 528 struct qca8k_priv *priv = ds->priv; 529 530 if (sset != ETH_SS_STATS) 531 return 0; 532 533 return priv->info->mib_count; 534} 535 536int qca8k_set_mac_eee(struct dsa_switch *ds, int port, 537 struct ethtool_keee *eee) 538{ 539 u32 lpi_en = QCA8K_REG_EEE_CTRL_LPI_EN(port); 540 struct qca8k_priv *priv = ds->priv; 541 u32 reg; 542 int ret; 543 544 mutex_lock(&priv->reg_mutex); 545 ret = qca8k_read(priv, QCA8K_REG_EEE_CTRL, ®); 546 if (ret < 0) 547 goto exit; 548 549 if (eee->eee_enabled) 550 reg |= lpi_en; 551 else 552 reg &= ~lpi_en; 553 ret = qca8k_write(priv, QCA8K_REG_EEE_CTRL, reg); 554 555exit: 556 mutex_unlock(&priv->reg_mutex); 557 return ret; 558} 559 560static int qca8k_port_configure_learning(struct dsa_switch *ds, int port, 561 bool learning) 562{ 563 struct qca8k_priv *priv = ds->priv; 564 565 if (learning) 566 return regmap_set_bits(priv->regmap, 567 QCA8K_PORT_LOOKUP_CTRL(port), 568 QCA8K_PORT_LOOKUP_LEARN); 569 else 570 return regmap_clear_bits(priv->regmap, 571 QCA8K_PORT_LOOKUP_CTRL(port), 572 QCA8K_PORT_LOOKUP_LEARN); 573} 574 575void qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state) 576{ 577 struct dsa_port *dp = dsa_to_port(ds, port); 578 struct qca8k_priv *priv = ds->priv; 579 bool learning = false; 580 u32 stp_state; 581 582 switch (state) { 583 case BR_STATE_DISABLED: 584 stp_state = QCA8K_PORT_LOOKUP_STATE_DISABLED; 585 break; 586 case BR_STATE_BLOCKING: 587 stp_state = QCA8K_PORT_LOOKUP_STATE_BLOCKING; 588 break; 589 case BR_STATE_LISTENING: 590 stp_state = QCA8K_PORT_LOOKUP_STATE_LISTENING; 591 break; 592 case BR_STATE_LEARNING: 593 stp_state = QCA8K_PORT_LOOKUP_STATE_LEARNING; 594 learning = dp->learning; 595 break; 596 case BR_STATE_FORWARDING: 597 learning = dp->learning; 598 fallthrough; 599 default: 600 stp_state = QCA8K_PORT_LOOKUP_STATE_FORWARD; 601 break; 602 } 603 604 qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), 605 QCA8K_PORT_LOOKUP_STATE_MASK, stp_state); 606 607 qca8k_port_configure_learning(ds, port, learning); 608} 609 610static int qca8k_update_port_member(struct qca8k_priv *priv, int port, 611 const struct net_device *bridge_dev, 612 bool join) 613{ 614 bool isolated = !!(priv->port_isolated_map & BIT(port)), other_isolated; 615 struct dsa_port *dp = dsa_to_port(priv->ds, port), *other_dp; 616 u32 port_mask = BIT(dp->cpu_dp->index); 617 int i, ret; 618 619 for (i = 0; i < QCA8K_NUM_PORTS; i++) { 620 if (i == port) 621 continue; 622 if (dsa_is_cpu_port(priv->ds, i)) 623 continue; 624 625 other_dp = dsa_to_port(priv->ds, i); 626 if (!dsa_port_offloads_bridge_dev(other_dp, bridge_dev)) 627 continue; 628 629 other_isolated = !!(priv->port_isolated_map & BIT(i)); 630 631 /* Add/remove this port to/from the portvlan mask of the other 632 * ports in the bridge 633 */ 634 if (join && !(isolated && other_isolated)) { 635 port_mask |= BIT(i); 636 ret = regmap_set_bits(priv->regmap, 637 QCA8K_PORT_LOOKUP_CTRL(i), 638 BIT(port)); 639 } else { 640 ret = regmap_clear_bits(priv->regmap, 641 QCA8K_PORT_LOOKUP_CTRL(i), 642 BIT(port)); 643 } 644 645 if (ret) 646 return ret; 647 } 648 649 /* Add/remove all other ports to/from this port's portvlan mask */ 650 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), 651 QCA8K_PORT_LOOKUP_MEMBER, port_mask); 652 653 return ret; 654} 655 656int qca8k_port_pre_bridge_flags(struct dsa_switch *ds, int port, 657 struct switchdev_brport_flags flags, 658 struct netlink_ext_ack *extack) 659{ 660 if (flags.mask & ~(BR_LEARNING | BR_ISOLATED)) 661 return -EINVAL; 662 663 return 0; 664} 665 666int qca8k_port_bridge_flags(struct dsa_switch *ds, int port, 667 struct switchdev_brport_flags flags, 668 struct netlink_ext_ack *extack) 669{ 670 struct qca8k_priv *priv = ds->priv; 671 int ret; 672 673 if (flags.mask & BR_LEARNING) { 674 ret = qca8k_port_configure_learning(ds, port, 675 flags.val & BR_LEARNING); 676 if (ret) 677 return ret; 678 } 679 680 if (flags.mask & BR_ISOLATED) { 681 struct dsa_port *dp = dsa_to_port(ds, port); 682 struct net_device *bridge_dev = dsa_port_bridge_dev_get(dp); 683 684 if (flags.val & BR_ISOLATED) 685 priv->port_isolated_map |= BIT(port); 686 else 687 priv->port_isolated_map &= ~BIT(port); 688 689 ret = qca8k_update_port_member(priv, port, bridge_dev, true); 690 if (ret) 691 return ret; 692 } 693 694 return 0; 695} 696 697int qca8k_port_bridge_join(struct dsa_switch *ds, int port, 698 struct dsa_bridge bridge, 699 bool *tx_fwd_offload, 700 struct netlink_ext_ack *extack) 701{ 702 struct qca8k_priv *priv = ds->priv; 703 704 return qca8k_update_port_member(priv, port, bridge.dev, true); 705} 706 707void qca8k_port_bridge_leave(struct dsa_switch *ds, int port, 708 struct dsa_bridge bridge) 709{ 710 struct qca8k_priv *priv = ds->priv; 711 int err; 712 713 err = qca8k_update_port_member(priv, port, bridge.dev, false); 714 if (err) 715 dev_err(priv->dev, 716 "Failed to update switch config for bridge leave: %d\n", 717 err); 718} 719 720void qca8k_port_fast_age(struct dsa_switch *ds, int port) 721{ 722 struct qca8k_priv *priv = ds->priv; 723 724 mutex_lock(&priv->reg_mutex); 725 qca8k_fdb_access(priv, QCA8K_FDB_FLUSH_PORT, port); 726 mutex_unlock(&priv->reg_mutex); 727} 728 729int qca8k_set_ageing_time(struct dsa_switch *ds, unsigned int msecs) 730{ 731 struct qca8k_priv *priv = ds->priv; 732 unsigned int secs = msecs / 1000; 733 u32 val; 734 735 /* AGE_TIME reg is set in 7s step */ 736 val = secs / 7; 737 738 /* Handle case with 0 as val to NOT disable 739 * learning 740 */ 741 if (!val) 742 val = 1; 743 744 return regmap_update_bits(priv->regmap, QCA8K_REG_ATU_CTRL, 745 QCA8K_ATU_AGE_TIME_MASK, 746 QCA8K_ATU_AGE_TIME(val)); 747} 748 749int qca8k_port_enable(struct dsa_switch *ds, int port, 750 struct phy_device *phy) 751{ 752 struct qca8k_priv *priv = ds->priv; 753 754 qca8k_port_set_status(priv, port, 1); 755 priv->port_enabled_map |= BIT(port); 756 757 if (dsa_is_user_port(ds, port)) 758 phy_support_asym_pause(phy); 759 760 return 0; 761} 762 763void qca8k_port_disable(struct dsa_switch *ds, int port) 764{ 765 struct qca8k_priv *priv = ds->priv; 766 767 qca8k_port_set_status(priv, port, 0); 768 priv->port_enabled_map &= ~BIT(port); 769} 770 771int qca8k_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu) 772{ 773 struct qca8k_priv *priv = ds->priv; 774 int ret; 775 776 /* We have only have a general MTU setting. 777 * DSA always set the CPU port's MTU to the largest MTU of the user 778 * ports. 779 * Setting MTU just for the CPU port is sufficient to correctly set a 780 * value for every port. 781 */ 782 if (!dsa_is_cpu_port(ds, port)) 783 return 0; 784 785 /* To change the MAX_FRAME_SIZE the cpu ports must be off or 786 * the switch panics. 787 * Turn off both cpu ports before applying the new value to prevent 788 * this. 789 */ 790 if (priv->port_enabled_map & BIT(0)) 791 qca8k_port_set_status(priv, 0, 0); 792 793 if (priv->port_enabled_map & BIT(6)) 794 qca8k_port_set_status(priv, 6, 0); 795 796 /* Include L2 header / FCS length */ 797 ret = qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, new_mtu + 798 ETH_HLEN + ETH_FCS_LEN); 799 800 if (priv->port_enabled_map & BIT(0)) 801 qca8k_port_set_status(priv, 0, 1); 802 803 if (priv->port_enabled_map & BIT(6)) 804 qca8k_port_set_status(priv, 6, 1); 805 806 return ret; 807} 808 809int qca8k_port_max_mtu(struct dsa_switch *ds, int port) 810{ 811 return QCA8K_MAX_MTU; 812} 813 814int qca8k_port_fdb_insert(struct qca8k_priv *priv, const u8 *addr, 815 u16 port_mask, u16 vid) 816{ 817 /* Set the vid to the port vlan id if no vid is set */ 818 if (!vid) 819 vid = QCA8K_PORT_VID_DEF; 820 821 return qca8k_fdb_add(priv, addr, port_mask, vid, 822 QCA8K_ATU_STATUS_STATIC); 823} 824 825int qca8k_port_fdb_add(struct dsa_switch *ds, int port, 826 const unsigned char *addr, u16 vid, 827 struct dsa_db db) 828{ 829 struct qca8k_priv *priv = ds->priv; 830 u16 port_mask = BIT(port); 831 832 return qca8k_port_fdb_insert(priv, addr, port_mask, vid); 833} 834 835int qca8k_port_fdb_del(struct dsa_switch *ds, int port, 836 const unsigned char *addr, u16 vid, 837 struct dsa_db db) 838{ 839 struct qca8k_priv *priv = ds->priv; 840 u16 port_mask = BIT(port); 841 842 if (!vid) 843 vid = QCA8K_PORT_VID_DEF; 844 845 return qca8k_fdb_del(priv, addr, port_mask, vid); 846} 847 848int qca8k_port_fdb_dump(struct dsa_switch *ds, int port, 849 dsa_fdb_dump_cb_t *cb, void *data) 850{ 851 struct qca8k_priv *priv = ds->priv; 852 struct qca8k_fdb _fdb = { 0 }; 853 int cnt = QCA8K_NUM_FDB_RECORDS; 854 bool is_static; 855 int ret = 0; 856 857 mutex_lock(&priv->reg_mutex); 858 while (cnt-- && !qca8k_fdb_next(priv, &_fdb, port)) { 859 if (!_fdb.aging) 860 break; 861 is_static = (_fdb.aging == QCA8K_ATU_STATUS_STATIC); 862 ret = cb(_fdb.mac, _fdb.vid, is_static, data); 863 if (ret) 864 break; 865 } 866 mutex_unlock(&priv->reg_mutex); 867 868 return 0; 869} 870 871int qca8k_port_mdb_add(struct dsa_switch *ds, int port, 872 const struct switchdev_obj_port_mdb *mdb, 873 struct dsa_db db) 874{ 875 struct qca8k_priv *priv = ds->priv; 876 const u8 *addr = mdb->addr; 877 u16 vid = mdb->vid; 878 879 if (!vid) 880 vid = QCA8K_PORT_VID_DEF; 881 882 return qca8k_fdb_search_and_insert(priv, BIT(port), addr, vid, 883 QCA8K_ATU_STATUS_STATIC); 884} 885 886int qca8k_port_mdb_del(struct dsa_switch *ds, int port, 887 const struct switchdev_obj_port_mdb *mdb, 888 struct dsa_db db) 889{ 890 struct qca8k_priv *priv = ds->priv; 891 const u8 *addr = mdb->addr; 892 u16 vid = mdb->vid; 893 894 if (!vid) 895 vid = QCA8K_PORT_VID_DEF; 896 897 return qca8k_fdb_search_and_del(priv, BIT(port), addr, vid); 898} 899 900int qca8k_port_mirror_add(struct dsa_switch *ds, int port, 901 struct dsa_mall_mirror_tc_entry *mirror, 902 bool ingress, struct netlink_ext_ack *extack) 903{ 904 struct qca8k_priv *priv = ds->priv; 905 int monitor_port, ret; 906 u32 reg, val; 907 908 /* Check for existent entry */ 909 if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port)) 910 return -EEXIST; 911 912 ret = regmap_read(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, &val); 913 if (ret) 914 return ret; 915 916 /* QCA83xx can have only one port set to mirror mode. 917 * Check that the correct port is requested and return error otherwise. 918 * When no mirror port is set, the values is set to 0xF 919 */ 920 monitor_port = FIELD_GET(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); 921 if (monitor_port != 0xF && monitor_port != mirror->to_local_port) 922 return -EEXIST; 923 924 /* Set the monitor port */ 925 val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, 926 mirror->to_local_port); 927 ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, 928 QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); 929 if (ret) 930 return ret; 931 932 if (ingress) { 933 reg = QCA8K_PORT_LOOKUP_CTRL(port); 934 val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN; 935 } else { 936 reg = QCA8K_REG_PORT_HOL_CTRL1(port); 937 val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN; 938 } 939 940 ret = regmap_update_bits(priv->regmap, reg, val, val); 941 if (ret) 942 return ret; 943 944 /* Track mirror port for tx and rx to decide when the 945 * mirror port has to be disabled. 946 */ 947 if (ingress) 948 priv->mirror_rx |= BIT(port); 949 else 950 priv->mirror_tx |= BIT(port); 951 952 return 0; 953} 954 955void qca8k_port_mirror_del(struct dsa_switch *ds, int port, 956 struct dsa_mall_mirror_tc_entry *mirror) 957{ 958 struct qca8k_priv *priv = ds->priv; 959 u32 reg, val; 960 int ret; 961 962 if (mirror->ingress) { 963 reg = QCA8K_PORT_LOOKUP_CTRL(port); 964 val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN; 965 } else { 966 reg = QCA8K_REG_PORT_HOL_CTRL1(port); 967 val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN; 968 } 969 970 ret = regmap_clear_bits(priv->regmap, reg, val); 971 if (ret) 972 goto err; 973 974 if (mirror->ingress) 975 priv->mirror_rx &= ~BIT(port); 976 else 977 priv->mirror_tx &= ~BIT(port); 978 979 /* No port set to send packet to mirror port. Disable mirror port */ 980 if (!priv->mirror_rx && !priv->mirror_tx) { 981 val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, 0xF); 982 ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, 983 QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); 984 if (ret) 985 goto err; 986 } 987err: 988 dev_err(priv->dev, "Failed to del mirror port from %d", port); 989} 990 991int qca8k_port_vlan_filtering(struct dsa_switch *ds, int port, 992 bool vlan_filtering, 993 struct netlink_ext_ack *extack) 994{ 995 struct qca8k_priv *priv = ds->priv; 996 int ret; 997 998 if (vlan_filtering) { 999 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), 1000 QCA8K_PORT_LOOKUP_VLAN_MODE_MASK, 1001 QCA8K_PORT_LOOKUP_VLAN_MODE_SECURE); 1002 } else { 1003 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), 1004 QCA8K_PORT_LOOKUP_VLAN_MODE_MASK, 1005 QCA8K_PORT_LOOKUP_VLAN_MODE_NONE); 1006 } 1007 1008 return ret; 1009} 1010 1011int qca8k_port_vlan_add(struct dsa_switch *ds, int port, 1012 const struct switchdev_obj_port_vlan *vlan, 1013 struct netlink_ext_ack *extack) 1014{ 1015 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 1016 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 1017 struct qca8k_priv *priv = ds->priv; 1018 int ret; 1019 1020 ret = qca8k_vlan_add(priv, port, vlan->vid, untagged); 1021 if (ret) { 1022 dev_err(priv->dev, "Failed to add VLAN to port %d (%d)", port, ret); 1023 return ret; 1024 } 1025 1026 if (pvid) { 1027 ret = qca8k_rmw(priv, QCA8K_EGRESS_VLAN(port), 1028 QCA8K_EGREES_VLAN_PORT_MASK(port), 1029 QCA8K_EGREES_VLAN_PORT(port, vlan->vid)); 1030 if (ret) 1031 return ret; 1032 1033 ret = qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(port), 1034 QCA8K_PORT_VLAN_CVID(vlan->vid) | 1035 QCA8K_PORT_VLAN_SVID(vlan->vid)); 1036 } 1037 1038 return ret; 1039} 1040 1041int qca8k_port_vlan_del(struct dsa_switch *ds, int port, 1042 const struct switchdev_obj_port_vlan *vlan) 1043{ 1044 struct qca8k_priv *priv = ds->priv; 1045 int ret; 1046 1047 ret = qca8k_vlan_del(priv, port, vlan->vid); 1048 if (ret) 1049 dev_err(priv->dev, "Failed to delete VLAN from port %d (%d)", port, ret); 1050 1051 return ret; 1052} 1053 1054static bool qca8k_lag_can_offload(struct dsa_switch *ds, 1055 struct dsa_lag lag, 1056 struct netdev_lag_upper_info *info, 1057 struct netlink_ext_ack *extack) 1058{ 1059 struct dsa_port *dp; 1060 int members = 0; 1061 1062 if (!lag.id) 1063 return false; 1064 1065 dsa_lag_foreach_port(dp, ds->dst, &lag) 1066 /* Includes the port joining the LAG */ 1067 members++; 1068 1069 if (members > QCA8K_NUM_PORTS_FOR_LAG) { 1070 NL_SET_ERR_MSG_MOD(extack, 1071 "Cannot offload more than 4 LAG ports"); 1072 return false; 1073 } 1074 1075 if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) { 1076 NL_SET_ERR_MSG_MOD(extack, 1077 "Can only offload LAG using hash TX type"); 1078 return false; 1079 } 1080 1081 if (info->hash_type != NETDEV_LAG_HASH_L2 && 1082 info->hash_type != NETDEV_LAG_HASH_L23) { 1083 NL_SET_ERR_MSG_MOD(extack, 1084 "Can only offload L2 or L2+L3 TX hash"); 1085 return false; 1086 } 1087 1088 return true; 1089} 1090 1091static int qca8k_lag_setup_hash(struct dsa_switch *ds, 1092 struct dsa_lag lag, 1093 struct netdev_lag_upper_info *info) 1094{ 1095 struct net_device *lag_dev = lag.dev; 1096 struct qca8k_priv *priv = ds->priv; 1097 bool unique_lag = true; 1098 unsigned int i; 1099 u32 hash = 0; 1100 1101 switch (info->hash_type) { 1102 case NETDEV_LAG_HASH_L23: 1103 hash |= QCA8K_TRUNK_HASH_SIP_EN; 1104 hash |= QCA8K_TRUNK_HASH_DIP_EN; 1105 fallthrough; 1106 case NETDEV_LAG_HASH_L2: 1107 hash |= QCA8K_TRUNK_HASH_SA_EN; 1108 hash |= QCA8K_TRUNK_HASH_DA_EN; 1109 break; 1110 default: /* We should NEVER reach this */ 1111 return -EOPNOTSUPP; 1112 } 1113 1114 /* Check if we are the unique configured LAG */ 1115 dsa_lags_foreach_id(i, ds->dst) 1116 if (i != lag.id && dsa_lag_by_id(ds->dst, i)) { 1117 unique_lag = false; 1118 break; 1119 } 1120 1121 /* Hash Mode is global. Make sure the same Hash Mode 1122 * is set to all the 4 possible lag. 1123 * If we are the unique LAG we can set whatever hash 1124 * mode we want. 1125 * To change hash mode it's needed to remove all LAG 1126 * and change the mode with the latest. 1127 */ 1128 if (unique_lag) { 1129 priv->lag_hash_mode = hash; 1130 } else if (priv->lag_hash_mode != hash) { 1131 netdev_err(lag_dev, "Error: Mismatched Hash Mode across different lag is not supported\n"); 1132 return -EOPNOTSUPP; 1133 } 1134 1135 return regmap_update_bits(priv->regmap, QCA8K_TRUNK_HASH_EN_CTRL, 1136 QCA8K_TRUNK_HASH_MASK, hash); 1137} 1138 1139static int qca8k_lag_refresh_portmap(struct dsa_switch *ds, int port, 1140 struct dsa_lag lag, bool delete) 1141{ 1142 struct qca8k_priv *priv = ds->priv; 1143 int ret, id, i; 1144 u32 val; 1145 1146 /* DSA LAG IDs are one-based, hardware is zero-based */ 1147 id = lag.id - 1; 1148 1149 /* Read current port member */ 1150 ret = regmap_read(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL0, &val); 1151 if (ret) 1152 return ret; 1153 1154 /* Shift val to the correct trunk */ 1155 val >>= QCA8K_REG_GOL_TRUNK_SHIFT(id); 1156 val &= QCA8K_REG_GOL_TRUNK_MEMBER_MASK; 1157 if (delete) 1158 val &= ~BIT(port); 1159 else 1160 val |= BIT(port); 1161 1162 /* Update port member. With empty portmap disable trunk */ 1163 ret = regmap_update_bits(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL0, 1164 QCA8K_REG_GOL_TRUNK_MEMBER(id) | 1165 QCA8K_REG_GOL_TRUNK_EN(id), 1166 !val << QCA8K_REG_GOL_TRUNK_SHIFT(id) | 1167 val << QCA8K_REG_GOL_TRUNK_SHIFT(id)); 1168 1169 /* Search empty member if adding or port on deleting */ 1170 for (i = 0; i < QCA8K_NUM_PORTS_FOR_LAG; i++) { 1171 ret = regmap_read(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL(id), &val); 1172 if (ret) 1173 return ret; 1174 1175 val >>= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i); 1176 val &= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_MASK; 1177 1178 if (delete) { 1179 /* If port flagged to be disabled assume this member is 1180 * empty 1181 */ 1182 if (val != QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN_MASK) 1183 continue; 1184 1185 val &= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_PORT_MASK; 1186 if (val != port) 1187 continue; 1188 } else { 1189 /* If port flagged to be enabled assume this member is 1190 * already set 1191 */ 1192 if (val == QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN_MASK) 1193 continue; 1194 } 1195 1196 /* We have found the member to add/remove */ 1197 break; 1198 } 1199 1200 /* Set port in the correct port mask or disable port if in delete mode */ 1201 return regmap_update_bits(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL(id), 1202 QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN(id, i) | 1203 QCA8K_REG_GOL_TRUNK_ID_MEM_ID_PORT(id, i), 1204 !delete << QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i) | 1205 port << QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i)); 1206} 1207 1208int qca8k_port_lag_join(struct dsa_switch *ds, int port, struct dsa_lag lag, 1209 struct netdev_lag_upper_info *info, 1210 struct netlink_ext_ack *extack) 1211{ 1212 int ret; 1213 1214 if (!qca8k_lag_can_offload(ds, lag, info, extack)) 1215 return -EOPNOTSUPP; 1216 1217 ret = qca8k_lag_setup_hash(ds, lag, info); 1218 if (ret) 1219 return ret; 1220 1221 return qca8k_lag_refresh_portmap(ds, port, lag, false); 1222} 1223 1224int qca8k_port_lag_leave(struct dsa_switch *ds, int port, 1225 struct dsa_lag lag) 1226{ 1227 return qca8k_lag_refresh_portmap(ds, port, lag, true); 1228} 1229 1230int qca8k_read_switch_id(struct qca8k_priv *priv) 1231{ 1232 u32 val; 1233 u8 id; 1234 int ret; 1235 1236 if (!priv->info) 1237 return -ENODEV; 1238 1239 ret = qca8k_read(priv, QCA8K_REG_MASK_CTRL, &val); 1240 if (ret < 0) 1241 return -ENODEV; 1242 1243 id = QCA8K_MASK_CTRL_DEVICE_ID(val); 1244 if (id != priv->info->id) { 1245 dev_err(priv->dev, 1246 "Switch id detected %x but expected %x", 1247 id, priv->info->id); 1248 return -ENODEV; 1249 } 1250 1251 priv->switch_id = id; 1252 1253 /* Save revision to communicate to the internal PHY driver */ 1254 priv->switch_revision = QCA8K_MASK_CTRL_REV_ID(val); 1255 1256 return 0; 1257}
~/
Read-only file preview.