1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Microchip KSZ8795 switch driver 4 * 5 * Copyright (C) 2017 Microchip Technology Inc. 6 * Tristram Ha <Tristram.Ha@microchip.com> 7 */ 8 9 #include <linux/delay.h> 10 #include <linux/export.h> 11 #include <linux/gpio.h> 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 #include <linux/platform_data/microchip-ksz.h> 15 #include <linux/phy.h> 16 #include <linux/etherdevice.h> 17 #include <linux/if_bridge.h> 18 #include <net/dsa.h> 19 #include <net/switchdev.h> 20 21 #include "ksz_common.h" 22 #include "ksz8795_reg.h" 23 24 static const struct { 25 char string[ETH_GSTRING_LEN]; 26 } mib_names[] = { 27 { "rx_hi" }, 28 { "rx_undersize" }, 29 { "rx_fragments" }, 30 { "rx_oversize" }, 31 { "rx_jabbers" }, 32 { "rx_symbol_err" }, 33 { "rx_crc_err" }, 34 { "rx_align_err" }, 35 { "rx_mac_ctrl" }, 36 { "rx_pause" }, 37 { "rx_bcast" }, 38 { "rx_mcast" }, 39 { "rx_ucast" }, 40 { "rx_64_or_less" }, 41 { "rx_65_127" }, 42 { "rx_128_255" }, 43 { "rx_256_511" }, 44 { "rx_512_1023" }, 45 { "rx_1024_1522" }, 46 { "rx_1523_2000" }, 47 { "rx_2001" }, 48 { "tx_hi" }, 49 { "tx_late_col" }, 50 { "tx_pause" }, 51 { "tx_bcast" }, 52 { "tx_mcast" }, 53 { "tx_ucast" }, 54 { "tx_deferred" }, 55 { "tx_total_col" }, 56 { "tx_exc_col" }, 57 { "tx_single_col" }, 58 { "tx_mult_col" }, 59 { "rx_total" }, 60 { "tx_total" }, 61 { "rx_discards" }, 62 { "tx_discards" }, 63 }; 64 65 static void ksz_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set) 66 { 67 regmap_update_bits(dev->regmap[0], addr, bits, set ? bits : 0); 68 } 69 70 static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits, 71 bool set) 72 { 73 regmap_update_bits(dev->regmap[0], PORT_CTRL_ADDR(port, offset), 74 bits, set ? bits : 0); 75 } 76 77 static int ksz8795_reset_switch(struct ksz_device *dev) 78 { 79 /* reset switch */ 80 ksz_write8(dev, REG_POWER_MANAGEMENT_1, 81 SW_SOFTWARE_POWER_DOWN << SW_POWER_MANAGEMENT_MODE_S); 82 ksz_write8(dev, REG_POWER_MANAGEMENT_1, 0); 83 84 return 0; 85 } 86 87 static void ksz8795_set_prio_queue(struct ksz_device *dev, int port, int queue) 88 { 89 u8 hi, lo; 90 91 /* Number of queues can only be 1, 2, or 4. */ 92 switch (queue) { 93 case 4: 94 case 3: 95 queue = PORT_QUEUE_SPLIT_4; 96 break; 97 case 2: 98 queue = PORT_QUEUE_SPLIT_2; 99 break; 100 default: 101 queue = PORT_QUEUE_SPLIT_1; 102 } 103 ksz_pread8(dev, port, REG_PORT_CTRL_0, &lo); 104 ksz_pread8(dev, port, P_DROP_TAG_CTRL, &hi); 105 lo &= ~PORT_QUEUE_SPLIT_L; 106 if (queue & PORT_QUEUE_SPLIT_2) 107 lo |= PORT_QUEUE_SPLIT_L; 108 hi &= ~PORT_QUEUE_SPLIT_H; 109 if (queue & PORT_QUEUE_SPLIT_4) 110 hi |= PORT_QUEUE_SPLIT_H; 111 ksz_pwrite8(dev, port, REG_PORT_CTRL_0, lo); 112 ksz_pwrite8(dev, port, P_DROP_TAG_CTRL, hi); 113 114 /* Default is port based for egress rate limit. */ 115 if (queue != PORT_QUEUE_SPLIT_1) 116 ksz_cfg(dev, REG_SW_CTRL_19, SW_OUT_RATE_LIMIT_QUEUE_BASED, 117 true); 118 } 119 120 static void ksz8795_r_mib_cnt(struct ksz_device *dev, int port, u16 addr, 121 u64 *cnt) 122 { 123 u16 ctrl_addr; 124 u32 data; 125 u8 check; 126 int loop; 127 128 ctrl_addr = addr + dev->reg_mib_cnt * port; 129 ctrl_addr |= IND_ACC_TABLE(TABLE_MIB | TABLE_READ); 130 131 mutex_lock(&dev->alu_mutex); 132 ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr); 133 134 /* It is almost guaranteed to always read the valid bit because of 135 * slow SPI speed. 136 */ 137 for (loop = 2; loop > 0; loop--) { 138 ksz_read8(dev, REG_IND_MIB_CHECK, &check); 139 140 if (check & MIB_COUNTER_VALID) { 141 ksz_read32(dev, REG_IND_DATA_LO, &data); 142 if (check & MIB_COUNTER_OVERFLOW) 143 *cnt += MIB_COUNTER_VALUE + 1; 144 *cnt += data & MIB_COUNTER_VALUE; 145 break; 146 } 147 } 148 mutex_unlock(&dev->alu_mutex); 149 } 150 151 static void ksz8795_r_mib_pkt(struct ksz_device *dev, int port, u16 addr, 152 u64 *dropped, u64 *cnt) 153 { 154 u16 ctrl_addr; 155 u32 data; 156 u8 check; 157 int loop; 158 159 addr -= dev->reg_mib_cnt; 160 ctrl_addr = (KS_MIB_TOTAL_RX_1 - KS_MIB_TOTAL_RX_0) * port; 161 ctrl_addr += addr + KS_MIB_TOTAL_RX_0; 162 ctrl_addr |= IND_ACC_TABLE(TABLE_MIB | TABLE_READ); 163 164 mutex_lock(&dev->alu_mutex); 165 ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr); 166 167 /* It is almost guaranteed to always read the valid bit because of 168 * slow SPI speed. 169 */ 170 for (loop = 2; loop > 0; loop--) { 171 ksz_read8(dev, REG_IND_MIB_CHECK, &check); 172 173 if (check & MIB_COUNTER_VALID) { 174 ksz_read32(dev, REG_IND_DATA_LO, &data); 175 if (addr < 2) { 176 u64 total; 177 178 total = check & MIB_TOTAL_BYTES_H; 179 total <<= 32; 180 *cnt += total; 181 *cnt += data; 182 if (check & MIB_COUNTER_OVERFLOW) { 183 total = MIB_TOTAL_BYTES_H + 1; 184 total <<= 32; 185 *cnt += total; 186 } 187 } else { 188 if (check & MIB_COUNTER_OVERFLOW) 189 *cnt += MIB_PACKET_DROPPED + 1; 190 *cnt += data & MIB_PACKET_DROPPED; 191 } 192 break; 193 } 194 } 195 mutex_unlock(&dev->alu_mutex); 196 } 197 198 static void ksz8795_freeze_mib(struct ksz_device *dev, int port, bool freeze) 199 { 200 /* enable the port for flush/freeze function */ 201 if (freeze) 202 ksz_cfg(dev, REG_SW_CTRL_6, BIT(port), true); 203 ksz_cfg(dev, REG_SW_CTRL_6, SW_MIB_COUNTER_FREEZE, freeze); 204 205 /* disable the port after freeze is done */ 206 if (!freeze) 207 ksz_cfg(dev, REG_SW_CTRL_6, BIT(port), false); 208 } 209 210 static void ksz8795_port_init_cnt(struct ksz_device *dev, int port) 211 { 212 struct ksz_port_mib *mib = &dev->ports[port].mib; 213 214 /* flush all enabled port MIB counters */ 215 ksz_cfg(dev, REG_SW_CTRL_6, BIT(port), true); 216 ksz_cfg(dev, REG_SW_CTRL_6, SW_MIB_COUNTER_FLUSH, true); 217 ksz_cfg(dev, REG_SW_CTRL_6, BIT(port), false); 218 219 mib->cnt_ptr = 0; 220 221 /* Some ports may not have MIB counters before SWITCH_COUNTER_NUM. */ 222 while (mib->cnt_ptr < dev->reg_mib_cnt) { 223 dev->dev_ops->r_mib_cnt(dev, port, mib->cnt_ptr, 224 &mib->counters[mib->cnt_ptr]); 225 ++mib->cnt_ptr; 226 } 227 228 /* Some ports may not have MIB counters after SWITCH_COUNTER_NUM. */ 229 while (mib->cnt_ptr < dev->mib_cnt) { 230 dev->dev_ops->r_mib_pkt(dev, port, mib->cnt_ptr, 231 NULL, &mib->counters[mib->cnt_ptr]); 232 ++mib->cnt_ptr; 233 } 234 mib->cnt_ptr = 0; 235 memset(mib->counters, 0, dev->mib_cnt * sizeof(u64)); 236 } 237 238 static void ksz8795_r_table(struct ksz_device *dev, int table, u16 addr, 239 u64 *data) 240 { 241 u16 ctrl_addr; 242 243 ctrl_addr = IND_ACC_TABLE(table | TABLE_READ) | addr; 244 245 mutex_lock(&dev->alu_mutex); 246 ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr); 247 ksz_read64(dev, REG_IND_DATA_HI, data); 248 mutex_unlock(&dev->alu_mutex); 249 } 250 251 static void ksz8795_w_table(struct ksz_device *dev, int table, u16 addr, 252 u64 data) 253 { 254 u16 ctrl_addr; 255 256 ctrl_addr = IND_ACC_TABLE(table) | addr; 257 258 mutex_lock(&dev->alu_mutex); 259 ksz_write64(dev, REG_IND_DATA_HI, data); 260 ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr); 261 mutex_unlock(&dev->alu_mutex); 262 } 263 264 static int ksz8795_valid_dyn_entry(struct ksz_device *dev, u8 *data) 265 { 266 int timeout = 100; 267 268 do { 269 ksz_read8(dev, REG_IND_DATA_CHECK, data); 270 timeout--; 271 } while ((*data & DYNAMIC_MAC_TABLE_NOT_READY) && timeout); 272 273 /* Entry is not ready for accessing. */ 274 if (*data & DYNAMIC_MAC_TABLE_NOT_READY) { 275 return -EAGAIN; 276 /* Entry is ready for accessing. */ 277 } else { 278 ksz_read8(dev, REG_IND_DATA_8, data); 279 280 /* There is no valid entry in the table. */ 281 if (*data & DYNAMIC_MAC_TABLE_MAC_EMPTY) 282 return -ENXIO; 283 } 284 return 0; 285 } 286 287 static int ksz8795_r_dyn_mac_table(struct ksz_device *dev, u16 addr, 288 u8 *mac_addr, u8 *fid, u8 *src_port, 289 u8 *timestamp, u16 *entries) 290 { 291 u32 data_hi, data_lo; 292 u16 ctrl_addr; 293 u8 data; 294 int rc; 295 296 ctrl_addr = IND_ACC_TABLE(TABLE_DYNAMIC_MAC | TABLE_READ) | addr; 297 298 mutex_lock(&dev->alu_mutex); 299 ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr); 300 301 rc = ksz8795_valid_dyn_entry(dev, &data); 302 if (rc == -EAGAIN) { 303 if (addr == 0) 304 *entries = 0; 305 } else if (rc == -ENXIO) { 306 *entries = 0; 307 /* At least one valid entry in the table. */ 308 } else { 309 u64 buf = 0; 310 int cnt; 311 312 ksz_read64(dev, REG_IND_DATA_HI, &buf); 313 data_hi = (u32)(buf >> 32); 314 data_lo = (u32)buf; 315 316 /* Check out how many valid entry in the table. */ 317 cnt = data & DYNAMIC_MAC_TABLE_ENTRIES_H; 318 cnt <<= DYNAMIC_MAC_ENTRIES_H_S; 319 cnt |= (data_hi & DYNAMIC_MAC_TABLE_ENTRIES) >> 320 DYNAMIC_MAC_ENTRIES_S; 321 *entries = cnt + 1; 322 323 *fid = (data_hi & DYNAMIC_MAC_TABLE_FID) >> 324 DYNAMIC_MAC_FID_S; 325 *src_port = (data_hi & DYNAMIC_MAC_TABLE_SRC_PORT) >> 326 DYNAMIC_MAC_SRC_PORT_S; 327 *timestamp = (data_hi & DYNAMIC_MAC_TABLE_TIMESTAMP) >> 328 DYNAMIC_MAC_TIMESTAMP_S; 329 330 mac_addr[5] = (u8)data_lo; 331 mac_addr[4] = (u8)(data_lo >> 8); 332 mac_addr[3] = (u8)(data_lo >> 16); 333 mac_addr[2] = (u8)(data_lo >> 24); 334 335 mac_addr[1] = (u8)data_hi; 336 mac_addr[0] = (u8)(data_hi >> 8); 337 rc = 0; 338 } 339 mutex_unlock(&dev->alu_mutex); 340 341 return rc; 342 } 343 344 static int ksz8795_r_sta_mac_table(struct ksz_device *dev, u16 addr, 345 struct alu_struct *alu) 346 { 347 u32 data_hi, data_lo; 348 u64 data; 349 350 ksz8795_r_table(dev, TABLE_STATIC_MAC, addr, &data); 351 data_hi = data >> 32; 352 data_lo = (u32)data; 353 if (data_hi & (STATIC_MAC_TABLE_VALID | STATIC_MAC_TABLE_OVERRIDE)) { 354 alu->mac[5] = (u8)data_lo; 355 alu->mac[4] = (u8)(data_lo >> 8); 356 alu->mac[3] = (u8)(data_lo >> 16); 357 alu->mac[2] = (u8)(data_lo >> 24); 358 alu->mac[1] = (u8)data_hi; 359 alu->mac[0] = (u8)(data_hi >> 8); 360 alu->port_forward = (data_hi & STATIC_MAC_TABLE_FWD_PORTS) >> 361 STATIC_MAC_FWD_PORTS_S; 362 alu->is_override = 363 (data_hi & STATIC_MAC_TABLE_OVERRIDE) ? 1 : 0; 364 data_hi >>= 1; 365 alu->is_use_fid = (data_hi & STATIC_MAC_TABLE_USE_FID) ? 1 : 0; 366 alu->fid = (data_hi & STATIC_MAC_TABLE_FID) >> 367 STATIC_MAC_FID_S; 368 return 0; 369 } 370 return -ENXIO; 371 } 372 373 static void ksz8795_w_sta_mac_table(struct ksz_device *dev, u16 addr, 374 struct alu_struct *alu) 375 { 376 u32 data_hi, data_lo; 377 u64 data; 378 379 data_lo = ((u32)alu->mac[2] << 24) | 380 ((u32)alu->mac[3] << 16) | 381 ((u32)alu->mac[4] << 8) | alu->mac[5]; 382 data_hi = ((u32)alu->mac[0] << 8) | alu->mac[1]; 383 data_hi |= (u32)alu->port_forward << STATIC_MAC_FWD_PORTS_S; 384 385 if (alu->is_override) 386 data_hi |= STATIC_MAC_TABLE_OVERRIDE; 387 if (alu->is_use_fid) { 388 data_hi |= STATIC_MAC_TABLE_USE_FID; 389 data_hi |= (u32)alu->fid << STATIC_MAC_FID_S; 390 } 391 if (alu->is_static) 392 data_hi |= STATIC_MAC_TABLE_VALID; 393 else 394 data_hi &= ~STATIC_MAC_TABLE_OVERRIDE; 395 396 data = (u64)data_hi << 32 | data_lo; 397 ksz8795_w_table(dev, TABLE_STATIC_MAC, addr, data); 398 } 399 400 static void ksz8795_from_vlan(u16 vlan, u8 *fid, u8 *member, u8 *valid) 401 { 402 *fid = vlan & VLAN_TABLE_FID; 403 *member = (vlan & VLAN_TABLE_MEMBERSHIP) >> VLAN_TABLE_MEMBERSHIP_S; 404 *valid = !!(vlan & VLAN_TABLE_VALID); 405 } 406 407 static void ksz8795_to_vlan(u8 fid, u8 member, u8 valid, u16 *vlan) 408 { 409 *vlan = fid; 410 *vlan |= (u16)member << VLAN_TABLE_MEMBERSHIP_S; 411 if (valid) 412 *vlan |= VLAN_TABLE_VALID; 413 } 414 415 static void ksz8795_r_vlan_entries(struct ksz_device *dev, u16 addr) 416 { 417 u64 data; 418 int i; 419 420 ksz8795_r_table(dev, TABLE_VLAN, addr, &data); 421 addr *= dev->phy_port_cnt; 422 for (i = 0; i < dev->phy_port_cnt; i++) { 423 dev->vlan_cache[addr + i].table[0] = (u16)data; 424 data >>= VLAN_TABLE_S; 425 } 426 } 427 428 static void ksz8795_r_vlan_table(struct ksz_device *dev, u16 vid, u16 *vlan) 429 { 430 int index; 431 u16 *data; 432 u16 addr; 433 u64 buf; 434 435 data = (u16 *)&buf; 436 addr = vid / dev->phy_port_cnt; 437 index = vid & 3; 438 ksz8795_r_table(dev, TABLE_VLAN, addr, &buf); 439 *vlan = data[index]; 440 } 441 442 static void ksz8795_w_vlan_table(struct ksz_device *dev, u16 vid, u16 vlan) 443 { 444 int index; 445 u16 *data; 446 u16 addr; 447 u64 buf; 448 449 data = (u16 *)&buf; 450 addr = vid / dev->phy_port_cnt; 451 index = vid & 3; 452 ksz8795_r_table(dev, TABLE_VLAN, addr, &buf); 453 data[index] = vlan; 454 dev->vlan_cache[vid].table[0] = vlan; 455 ksz8795_w_table(dev, TABLE_VLAN, addr, buf); 456 } 457 458 static void ksz8795_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val) 459 { 460 u8 restart, speed, ctrl, link; 461 int processed = true; 462 u16 data = 0; 463 u8 p = phy; 464 465 switch (reg) { 466 case PHY_REG_CTRL: 467 ksz_pread8(dev, p, P_NEG_RESTART_CTRL, &restart); 468 ksz_pread8(dev, p, P_SPEED_STATUS, &speed); 469 ksz_pread8(dev, p, P_FORCE_CTRL, &ctrl); 470 if (restart & PORT_PHY_LOOPBACK) 471 data |= PHY_LOOPBACK; 472 if (ctrl & PORT_FORCE_100_MBIT) 473 data |= PHY_SPEED_100MBIT; 474 if (!(ctrl & PORT_AUTO_NEG_DISABLE)) 475 data |= PHY_AUTO_NEG_ENABLE; 476 if (restart & PORT_POWER_DOWN) 477 data |= PHY_POWER_DOWN; 478 if (restart & PORT_AUTO_NEG_RESTART) 479 data |= PHY_AUTO_NEG_RESTART; 480 if (ctrl & PORT_FORCE_FULL_DUPLEX) 481 data |= PHY_FULL_DUPLEX; 482 if (speed & PORT_HP_MDIX) 483 data |= PHY_HP_MDIX; 484 if (restart & PORT_FORCE_MDIX) 485 data |= PHY_FORCE_MDIX; 486 if (restart & PORT_AUTO_MDIX_DISABLE) 487 data |= PHY_AUTO_MDIX_DISABLE; 488 if (restart & PORT_TX_DISABLE) 489 data |= PHY_TRANSMIT_DISABLE; 490 if (restart & PORT_LED_OFF) 491 data |= PHY_LED_DISABLE; 492 break; 493 case PHY_REG_STATUS: 494 ksz_pread8(dev, p, P_LINK_STATUS, &link); 495 data = PHY_100BTX_FD_CAPABLE | 496 PHY_100BTX_CAPABLE | 497 PHY_10BT_FD_CAPABLE | 498 PHY_10BT_CAPABLE | 499 PHY_AUTO_NEG_CAPABLE; 500 if (link & PORT_AUTO_NEG_COMPLETE) 501 data |= PHY_AUTO_NEG_ACKNOWLEDGE; 502 if (link & PORT_STAT_LINK_GOOD) 503 data |= PHY_LINK_STATUS; 504 break; 505 case PHY_REG_ID_1: 506 data = KSZ8795_ID_HI; 507 break; 508 case PHY_REG_ID_2: 509 data = KSZ8795_ID_LO; 510 break; 511 case PHY_REG_AUTO_NEGOTIATION: 512 ksz_pread8(dev, p, P_LOCAL_CTRL, &ctrl); 513 data = PHY_AUTO_NEG_802_3; 514 if (ctrl & PORT_AUTO_NEG_SYM_PAUSE) 515 data |= PHY_AUTO_NEG_SYM_PAUSE; 516 if (ctrl & PORT_AUTO_NEG_100BTX_FD) 517 data |= PHY_AUTO_NEG_100BTX_FD; 518 if (ctrl & PORT_AUTO_NEG_100BTX) 519 data |= PHY_AUTO_NEG_100BTX; 520 if (ctrl & PORT_AUTO_NEG_10BT_FD) 521 data |= PHY_AUTO_NEG_10BT_FD; 522 if (ctrl & PORT_AUTO_NEG_10BT) 523 data |= PHY_AUTO_NEG_10BT; 524 break; 525 case PHY_REG_REMOTE_CAPABILITY: 526 ksz_pread8(dev, p, P_REMOTE_STATUS, &link); 527 data = PHY_AUTO_NEG_802_3; 528 if (link & PORT_REMOTE_SYM_PAUSE) 529 data |= PHY_AUTO_NEG_SYM_PAUSE; 530 if (link & PORT_REMOTE_100BTX_FD) 531 data |= PHY_AUTO_NEG_100BTX_FD; 532 if (link & PORT_REMOTE_100BTX) 533 data |= PHY_AUTO_NEG_100BTX; 534 if (link & PORT_REMOTE_10BT_FD) 535 data |= PHY_AUTO_NEG_10BT_FD; 536 if (link & PORT_REMOTE_10BT) 537 data |= PHY_AUTO_NEG_10BT; 538 if (data & ~PHY_AUTO_NEG_802_3) 539 data |= PHY_REMOTE_ACKNOWLEDGE_NOT; 540 break; 541 default: 542 processed = false; 543 break; 544 } 545 if (processed) 546 *val = data; 547 } 548 549 static void ksz8795_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val) 550 { 551 u8 p = phy; 552 u8 restart, speed, ctrl, data; 553 554 switch (reg) { 555 case PHY_REG_CTRL: 556 557 /* Do not support PHY reset function. */ 558 if (val & PHY_RESET) 559 break; 560 ksz_pread8(dev, p, P_SPEED_STATUS, &speed); 561 data = speed; 562 if (val & PHY_HP_MDIX) 563 data |= PORT_HP_MDIX; 564 else 565 data &= ~PORT_HP_MDIX; 566 if (data != speed) 567 ksz_pwrite8(dev, p, P_SPEED_STATUS, data); 568 ksz_pread8(dev, p, P_FORCE_CTRL, &ctrl); 569 data = ctrl; 570 if (!(val & PHY_AUTO_NEG_ENABLE)) 571 data |= PORT_AUTO_NEG_DISABLE; 572 else 573 data &= ~PORT_AUTO_NEG_DISABLE; 574 575 /* Fiber port does not support auto-negotiation. */ 576 if (dev->ports[p].fiber) 577 data |= PORT_AUTO_NEG_DISABLE; 578 if (val & PHY_SPEED_100MBIT) 579 data |= PORT_FORCE_100_MBIT; 580 else 581 data &= ~PORT_FORCE_100_MBIT; 582 if (val & PHY_FULL_DUPLEX) 583 data |= PORT_FORCE_FULL_DUPLEX; 584 else 585 data &= ~PORT_FORCE_FULL_DUPLEX; 586 if (data != ctrl) 587 ksz_pwrite8(dev, p, P_FORCE_CTRL, data); 588 ksz_pread8(dev, p, P_NEG_RESTART_CTRL, &restart); 589 data = restart; 590 if (val & PHY_LED_DISABLE) 591 data |= PORT_LED_OFF; 592 else 593 data &= ~PORT_LED_OFF; 594 if (val & PHY_TRANSMIT_DISABLE) 595 data |= PORT_TX_DISABLE; 596 else 597 data &= ~PORT_TX_DISABLE; 598 if (val & PHY_AUTO_NEG_RESTART) 599 data |= PORT_AUTO_NEG_RESTART; 600 else 601 data &= ~(PORT_AUTO_NEG_RESTART); 602 if (val & PHY_POWER_DOWN) 603 data |= PORT_POWER_DOWN; 604 else 605 data &= ~PORT_POWER_DOWN; 606 if (val & PHY_AUTO_MDIX_DISABLE) 607 data |= PORT_AUTO_MDIX_DISABLE; 608 else 609 data &= ~PORT_AUTO_MDIX_DISABLE; 610 if (val & PHY_FORCE_MDIX) 611 data |= PORT_FORCE_MDIX; 612 else 613 data &= ~PORT_FORCE_MDIX; 614 if (val & PHY_LOOPBACK) 615 data |= PORT_PHY_LOOPBACK; 616 else 617 data &= ~PORT_PHY_LOOPBACK; 618 if (data != restart) 619 ksz_pwrite8(dev, p, P_NEG_RESTART_CTRL, data); 620 break; 621 case PHY_REG_AUTO_NEGOTIATION: 622 ksz_pread8(dev, p, P_LOCAL_CTRL, &ctrl); 623 data = ctrl; 624 data &= ~(PORT_AUTO_NEG_SYM_PAUSE | 625 PORT_AUTO_NEG_100BTX_FD | 626 PORT_AUTO_NEG_100BTX | 627 PORT_AUTO_NEG_10BT_FD | 628 PORT_AUTO_NEG_10BT); 629 if (val & PHY_AUTO_NEG_SYM_PAUSE) 630 data |= PORT_AUTO_NEG_SYM_PAUSE; 631 if (val & PHY_AUTO_NEG_100BTX_FD) 632 data |= PORT_AUTO_NEG_100BTX_FD; 633 if (val & PHY_AUTO_NEG_100BTX) 634 data |= PORT_AUTO_NEG_100BTX; 635 if (val & PHY_AUTO_NEG_10BT_FD) 636 data |= PORT_AUTO_NEG_10BT_FD; 637 if (val & PHY_AUTO_NEG_10BT) 638 data |= PORT_AUTO_NEG_10BT; 639 if (data != ctrl) 640 ksz_pwrite8(dev, p, P_LOCAL_CTRL, data); 641 break; 642 default: 643 break; 644 } 645 } 646 647 static enum dsa_tag_protocol ksz8795_get_tag_protocol(struct dsa_switch *ds, 648 int port, 649 enum dsa_tag_protocol mp) 650 { 651 return DSA_TAG_PROTO_KSZ8795; 652 } 653 654 static void ksz8795_get_strings(struct dsa_switch *ds, int port, 655 u32 stringset, uint8_t *buf) 656 { 657 struct ksz_device *dev = ds->priv; 658 int i; 659 660 for (i = 0; i < dev->mib_cnt; i++) { 661 memcpy(buf + i * ETH_GSTRING_LEN, mib_names[i].string, 662 ETH_GSTRING_LEN); 663 } 664 } 665 666 static void ksz8795_cfg_port_member(struct ksz_device *dev, int port, 667 u8 member) 668 { 669 u8 data; 670 671 ksz_pread8(dev, port, P_MIRROR_CTRL, &data); 672 data &= ~PORT_VLAN_MEMBERSHIP; 673 data |= (member & dev->port_mask); 674 ksz_pwrite8(dev, port, P_MIRROR_CTRL, data); 675 dev->ports[port].member = member; 676 } 677 678 static void ksz8795_port_stp_state_set(struct dsa_switch *ds, int port, 679 u8 state) 680 { 681 struct ksz_device *dev = ds->priv; 682 int forward = dev->member; 683 struct ksz_port *p; 684 int member = -1; 685 u8 data; 686 687 p = &dev->ports[port]; 688 689 ksz_pread8(dev, port, P_STP_CTRL, &data); 690 data &= ~(PORT_TX_ENABLE | PORT_RX_ENABLE | PORT_LEARN_DISABLE); 691 692 switch (state) { 693 case BR_STATE_DISABLED: 694 data |= PORT_LEARN_DISABLE; 695 if (port < dev->phy_port_cnt) 696 member = 0; 697 break; 698 case BR_STATE_LISTENING: 699 data |= (PORT_RX_ENABLE | PORT_LEARN_DISABLE); 700 if (port < dev->phy_port_cnt && 701 p->stp_state == BR_STATE_DISABLED) 702 member = dev->host_mask | p->vid_member; 703 break; 704 case BR_STATE_LEARNING: 705 data |= PORT_RX_ENABLE; 706 break; 707 case BR_STATE_FORWARDING: 708 data |= (PORT_TX_ENABLE | PORT_RX_ENABLE); 709 710 /* This function is also used internally. */ 711 if (port == dev->cpu_port) 712 break; 713 714 /* Port is a member of a bridge. */ 715 if (dev->br_member & BIT(port)) { 716 dev->member |= BIT(port); 717 member = dev->member; 718 } else { 719 member = dev->host_mask | p->vid_member; 720 } 721 break; 722 case BR_STATE_BLOCKING: 723 data |= PORT_LEARN_DISABLE; 724 if (port < dev->phy_port_cnt && 725 p->stp_state == BR_STATE_DISABLED) 726 member = dev->host_mask | p->vid_member; 727 break; 728 default: 729 dev_err(ds->dev, "invalid STP state: %d\n", state); 730 return; 731 } 732 733 ksz_pwrite8(dev, port, P_STP_CTRL, data); 734 p->stp_state = state; 735 /* Port membership may share register with STP state. */ 736 if (member >= 0 && member != p->member) 737 ksz8795_cfg_port_member(dev, port, (u8)member); 738 739 /* Check if forwarding needs to be updated. */ 740 if (state != BR_STATE_FORWARDING) { 741 if (dev->br_member & BIT(port)) 742 dev->member &= ~BIT(port); 743 } 744 745 /* When topology has changed the function ksz_update_port_member 746 * should be called to modify port forwarding behavior. 747 */ 748 if (forward != dev->member) 749 ksz_update_port_member(dev, port); 750 } 751 752 static void ksz8795_flush_dyn_mac_table(struct ksz_device *dev, int port) 753 { 754 u8 learn[DSA_MAX_PORTS]; 755 int first, index, cnt; 756 struct ksz_port *p; 757 758 if ((uint)port < dev->port_cnt) { 759 first = port; 760 cnt = port + 1; 761 } else { 762 /* Flush all ports. */ 763 first = 0; 764 cnt = dev->port_cnt; 765 } 766 for (index = first; index < cnt; index++) { 767 p = &dev->ports[index]; 768 if (!p->on) 769 continue; 770 ksz_pread8(dev, index, P_STP_CTRL, &learn[index]); 771 if (!(learn[index] & PORT_LEARN_DISABLE)) 772 ksz_pwrite8(dev, index, P_STP_CTRL, 773 learn[index] | PORT_LEARN_DISABLE); 774 } 775 ksz_cfg(dev, S_FLUSH_TABLE_CTRL, SW_FLUSH_DYN_MAC_TABLE, true); 776 for (index = first; index < cnt; index++) { 777 p = &dev->ports[index]; 778 if (!p->on) 779 continue; 780 if (!(learn[index] & PORT_LEARN_DISABLE)) 781 ksz_pwrite8(dev, index, P_STP_CTRL, learn[index]); 782 } 783 } 784 785 static int ksz8795_port_vlan_filtering(struct dsa_switch *ds, int port, 786 bool flag, 787 struct switchdev_trans *trans) 788 { 789 struct ksz_device *dev = ds->priv; 790 791 if (switchdev_trans_ph_prepare(trans)) 792 return 0; 793 794 ksz_cfg(dev, S_MIRROR_CTRL, SW_VLAN_ENABLE, flag); 795 796 return 0; 797 } 798 799 static void ksz8795_port_vlan_add(struct dsa_switch *ds, int port, 800 const struct switchdev_obj_port_vlan *vlan) 801 { 802 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 803 struct ksz_device *dev = ds->priv; 804 u16 data, vid, new_pvid = 0; 805 u8 fid, member, valid; 806 807 ksz_port_cfg(dev, port, P_TAG_CTRL, PORT_REMOVE_TAG, untagged); 808 809 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 810 ksz8795_r_vlan_table(dev, vid, &data); 811 ksz8795_from_vlan(data, &fid, &member, &valid); 812 813 /* First time to setup the VLAN entry. */ 814 if (!valid) { 815 /* Need to find a way to map VID to FID. */ 816 fid = 1; 817 valid = 1; 818 } 819 member |= BIT(port); 820 821 ksz8795_to_vlan(fid, member, valid, &data); 822 ksz8795_w_vlan_table(dev, vid, data); 823 824 /* change PVID */ 825 if (vlan->flags & BRIDGE_VLAN_INFO_PVID) 826 new_pvid = vid; 827 } 828 829 if (new_pvid) { 830 ksz_pread16(dev, port, REG_PORT_CTRL_VID, &vid); 831 vid &= 0xfff; 832 vid |= new_pvid; 833 ksz_pwrite16(dev, port, REG_PORT_CTRL_VID, vid); 834 } 835 } 836 837 static int ksz8795_port_vlan_del(struct dsa_switch *ds, int port, 838 const struct switchdev_obj_port_vlan *vlan) 839 { 840 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 841 struct ksz_device *dev = ds->priv; 842 u16 data, vid, pvid, new_pvid = 0; 843 u8 fid, member, valid; 844 845 ksz_pread16(dev, port, REG_PORT_CTRL_VID, &pvid); 846 pvid = pvid & 0xFFF; 847 848 ksz_port_cfg(dev, port, P_TAG_CTRL, PORT_REMOVE_TAG, untagged); 849 850 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 851 ksz8795_r_vlan_table(dev, vid, &data); 852 ksz8795_from_vlan(data, &fid, &member, &valid); 853 854 member &= ~BIT(port); 855 856 /* Invalidate the entry if no more member. */ 857 if (!member) { 858 fid = 0; 859 valid = 0; 860 } 861 862 if (pvid == vid) 863 new_pvid = 1; 864 865 ksz8795_to_vlan(fid, member, valid, &data); 866 ksz8795_w_vlan_table(dev, vid, data); 867 } 868 869 if (new_pvid != pvid) 870 ksz_pwrite16(dev, port, REG_PORT_CTRL_VID, pvid); 871 872 return 0; 873 } 874 875 static int ksz8795_port_mirror_add(struct dsa_switch *ds, int port, 876 struct dsa_mall_mirror_tc_entry *mirror, 877 bool ingress) 878 { 879 struct ksz_device *dev = ds->priv; 880 881 if (ingress) { 882 ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_RX, true); 883 dev->mirror_rx |= BIT(port); 884 } else { 885 ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, true); 886 dev->mirror_tx |= BIT(port); 887 } 888 889 ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_SNIFFER, false); 890 891 /* configure mirror port */ 892 if (dev->mirror_rx || dev->mirror_tx) 893 ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL, 894 PORT_MIRROR_SNIFFER, true); 895 896 return 0; 897 } 898 899 static void ksz8795_port_mirror_del(struct dsa_switch *ds, int port, 900 struct dsa_mall_mirror_tc_entry *mirror) 901 { 902 struct ksz_device *dev = ds->priv; 903 u8 data; 904 905 if (mirror->ingress) { 906 ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_RX, false); 907 dev->mirror_rx &= ~BIT(port); 908 } else { 909 ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, false); 910 dev->mirror_tx &= ~BIT(port); 911 } 912 913 ksz_pread8(dev, port, P_MIRROR_CTRL, &data); 914 915 if (!dev->mirror_rx && !dev->mirror_tx) 916 ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL, 917 PORT_MIRROR_SNIFFER, false); 918 } 919 920 static void ksz8795_port_setup(struct ksz_device *dev, int port, bool cpu_port) 921 { 922 struct ksz_port *p = &dev->ports[port]; 923 u8 data8, member; 924 925 /* enable broadcast storm limit */ 926 ksz_port_cfg(dev, port, P_BCAST_STORM_CTRL, PORT_BROADCAST_STORM, true); 927 928 ksz8795_set_prio_queue(dev, port, 4); 929 930 /* disable DiffServ priority */ 931 ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_DIFFSERV_ENABLE, false); 932 933 /* replace priority */ 934 ksz_port_cfg(dev, port, P_802_1P_CTRL, PORT_802_1P_REMAPPING, false); 935 936 /* enable 802.1p priority */ 937 ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_ENABLE, true); 938 939 if (cpu_port) { 940 if (!p->interface && dev->compat_interface) { 941 dev_warn(dev->dev, 942 "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. " 943 "Please update your device tree.\n", 944 port); 945 p->interface = dev->compat_interface; 946 } 947 948 /* Configure MII interface for proper network communication. */ 949 ksz_read8(dev, REG_PORT_5_CTRL_6, &data8); 950 data8 &= ~PORT_INTERFACE_TYPE; 951 data8 &= ~PORT_GMII_1GPS_MODE; 952 switch (p->interface) { 953 case PHY_INTERFACE_MODE_MII: 954 p->phydev.speed = SPEED_100; 955 break; 956 case PHY_INTERFACE_MODE_RMII: 957 data8 |= PORT_INTERFACE_RMII; 958 p->phydev.speed = SPEED_100; 959 break; 960 case PHY_INTERFACE_MODE_GMII: 961 data8 |= PORT_GMII_1GPS_MODE; 962 data8 |= PORT_INTERFACE_GMII; 963 p->phydev.speed = SPEED_1000; 964 break; 965 default: 966 data8 &= ~PORT_RGMII_ID_IN_ENABLE; 967 data8 &= ~PORT_RGMII_ID_OUT_ENABLE; 968 if (p->interface == PHY_INTERFACE_MODE_RGMII_ID || 969 p->interface == PHY_INTERFACE_MODE_RGMII_RXID) 970 data8 |= PORT_RGMII_ID_IN_ENABLE; 971 if (p->interface == PHY_INTERFACE_MODE_RGMII_ID || 972 p->interface == PHY_INTERFACE_MODE_RGMII_TXID) 973 data8 |= PORT_RGMII_ID_OUT_ENABLE; 974 data8 |= PORT_GMII_1GPS_MODE; 975 data8 |= PORT_INTERFACE_RGMII; 976 p->phydev.speed = SPEED_1000; 977 break; 978 } 979 ksz_write8(dev, REG_PORT_5_CTRL_6, data8); 980 p->phydev.duplex = 1; 981 982 member = dev->port_mask; 983 } else { 984 member = dev->host_mask | p->vid_member; 985 } 986 ksz8795_cfg_port_member(dev, port, member); 987 } 988 989 static void ksz8795_config_cpu_port(struct dsa_switch *ds) 990 { 991 struct ksz_device *dev = ds->priv; 992 struct ksz_port *p; 993 u8 remote; 994 int i; 995 996 /* Switch marks the maximum frame with extra byte as oversize. */ 997 ksz_cfg(dev, REG_SW_CTRL_2, SW_LEGAL_PACKET_DISABLE, true); 998 ksz_cfg(dev, S_TAIL_TAG_CTRL, SW_TAIL_TAG_ENABLE, true); 999 1000 p = &dev->ports[dev->cpu_port]; 1001 p->vid_member = dev->port_mask; 1002 p->on = 1; 1003 1004 ksz8795_port_setup(dev, dev->cpu_port, true); 1005 dev->member = dev->host_mask; 1006 1007 for (i = 0; i < dev->phy_port_cnt; i++) { 1008 p = &dev->ports[i]; 1009 1010 /* Initialize to non-zero so that ksz_cfg_port_member() will 1011 * be called. 1012 */ 1013 p->vid_member = BIT(i); 1014 p->member = dev->port_mask; 1015 ksz8795_port_stp_state_set(ds, i, BR_STATE_DISABLED); 1016 1017 /* Last port may be disabled. */ 1018 if (i == dev->phy_port_cnt) 1019 break; 1020 p->on = 1; 1021 p->phy = 1; 1022 } 1023 for (i = 0; i < dev->phy_port_cnt; i++) { 1024 p = &dev->ports[i]; 1025 if (!p->on) 1026 continue; 1027 ksz_pread8(dev, i, P_REMOTE_STATUS, &remote); 1028 if (remote & PORT_FIBER_MODE) 1029 p->fiber = 1; 1030 if (p->fiber) 1031 ksz_port_cfg(dev, i, P_STP_CTRL, PORT_FORCE_FLOW_CTRL, 1032 true); 1033 else 1034 ksz_port_cfg(dev, i, P_STP_CTRL, PORT_FORCE_FLOW_CTRL, 1035 false); 1036 } 1037 } 1038 1039 static int ksz8795_setup(struct dsa_switch *ds) 1040 { 1041 struct ksz_device *dev = ds->priv; 1042 struct alu_struct alu; 1043 int i, ret = 0; 1044 1045 dev->vlan_cache = devm_kcalloc(dev->dev, sizeof(struct vlan_table), 1046 dev->num_vlans, GFP_KERNEL); 1047 if (!dev->vlan_cache) 1048 return -ENOMEM; 1049 1050 ret = ksz8795_reset_switch(dev); 1051 if (ret) { 1052 dev_err(ds->dev, "failed to reset switch\n"); 1053 return ret; 1054 } 1055 1056 ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_FLOW_CTRL, true); 1057 1058 /* Enable automatic fast aging when link changed detected. */ 1059 ksz_cfg(dev, S_LINK_AGING_CTRL, SW_LINK_AUTO_AGING, true); 1060 1061 /* Enable aggressive back off algorithm in half duplex mode. */ 1062 regmap_update_bits(dev->regmap[0], REG_SW_CTRL_1, 1063 SW_AGGR_BACKOFF, SW_AGGR_BACKOFF); 1064 1065 /* 1066 * Make sure unicast VLAN boundary is set as default and 1067 * enable no excessive collision drop. 1068 */ 1069 regmap_update_bits(dev->regmap[0], REG_SW_CTRL_2, 1070 UNICAST_VLAN_BOUNDARY | NO_EXC_COLLISION_DROP, 1071 UNICAST_VLAN_BOUNDARY | NO_EXC_COLLISION_DROP); 1072 1073 ksz8795_config_cpu_port(ds); 1074 1075 ksz_cfg(dev, REG_SW_CTRL_2, MULTICAST_STORM_DISABLE, true); 1076 1077 ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_REPLACE_VID, false); 1078 1079 ksz_cfg(dev, S_MIRROR_CTRL, SW_MIRROR_RX_TX, false); 1080 1081 /* set broadcast storm protection 10% rate */ 1082 regmap_update_bits(dev->regmap[1], S_REPLACE_VID_CTRL, 1083 BROADCAST_STORM_RATE, 1084 (BROADCAST_STORM_VALUE * 1085 BROADCAST_STORM_PROT_RATE) / 100); 1086 1087 for (i = 0; i < (dev->num_vlans / 4); i++) 1088 ksz8795_r_vlan_entries(dev, i); 1089 1090 /* Setup STP address for STP operation. */ 1091 memset(&alu, 0, sizeof(alu)); 1092 ether_addr_copy(alu.mac, eth_stp_addr); 1093 alu.is_static = true; 1094 alu.is_override = true; 1095 alu.port_forward = dev->host_mask; 1096 1097 ksz8795_w_sta_mac_table(dev, 0, &alu); 1098 1099 ksz_init_mib_timer(dev); 1100 1101 return 0; 1102 } 1103 1104 static const struct dsa_switch_ops ksz8795_switch_ops = { 1105 .get_tag_protocol = ksz8795_get_tag_protocol, 1106 .setup = ksz8795_setup, 1107 .phy_read = ksz_phy_read16, 1108 .phy_write = ksz_phy_write16, 1109 .phylink_mac_link_down = ksz_mac_link_down, 1110 .port_enable = ksz_enable_port, 1111 .get_strings = ksz8795_get_strings, 1112 .get_ethtool_stats = ksz_get_ethtool_stats, 1113 .get_sset_count = ksz_sset_count, 1114 .port_bridge_join = ksz_port_bridge_join, 1115 .port_bridge_leave = ksz_port_bridge_leave, 1116 .port_stp_state_set = ksz8795_port_stp_state_set, 1117 .port_fast_age = ksz_port_fast_age, 1118 .port_vlan_filtering = ksz8795_port_vlan_filtering, 1119 .port_vlan_prepare = ksz_port_vlan_prepare, 1120 .port_vlan_add = ksz8795_port_vlan_add, 1121 .port_vlan_del = ksz8795_port_vlan_del, 1122 .port_fdb_dump = ksz_port_fdb_dump, 1123 .port_mdb_prepare = ksz_port_mdb_prepare, 1124 .port_mdb_add = ksz_port_mdb_add, 1125 .port_mdb_del = ksz_port_mdb_del, 1126 .port_mirror_add = ksz8795_port_mirror_add, 1127 .port_mirror_del = ksz8795_port_mirror_del, 1128 }; 1129 1130 static u32 ksz8795_get_port_addr(int port, int offset) 1131 { 1132 return PORT_CTRL_ADDR(port, offset); 1133 } 1134 1135 static int ksz8795_switch_detect(struct ksz_device *dev) 1136 { 1137 u8 id1, id2; 1138 u16 id16; 1139 int ret; 1140 1141 /* read chip id */ 1142 ret = ksz_read16(dev, REG_CHIP_ID0, &id16); 1143 if (ret) 1144 return ret; 1145 1146 id1 = id16 >> 8; 1147 id2 = id16 & SW_CHIP_ID_M; 1148 if (id1 != FAMILY_ID || 1149 (id2 != CHIP_ID_94 && id2 != CHIP_ID_95)) 1150 return -ENODEV; 1151 1152 if (id2 == CHIP_ID_95) { 1153 u8 val; 1154 1155 id2 = 0x95; 1156 ksz_read8(dev, REG_PORT_1_STATUS_0, &val); 1157 if (val & PORT_FIBER_MODE) 1158 id2 = 0x65; 1159 } else if (id2 == CHIP_ID_94) { 1160 id2 = 0x94; 1161 } 1162 id16 &= ~0xff; 1163 id16 |= id2; 1164 dev->chip_id = id16; 1165 1166 return 0; 1167 } 1168 1169 struct ksz_chip_data { 1170 u16 chip_id; 1171 const char *dev_name; 1172 int num_vlans; 1173 int num_alus; 1174 int num_statics; 1175 int cpu_ports; 1176 int port_cnt; 1177 }; 1178 1179 static const struct ksz_chip_data ksz8795_switch_chips[] = { 1180 { 1181 .chip_id = 0x8795, 1182 .dev_name = "KSZ8795", 1183 .num_vlans = 4096, 1184 .num_alus = 0, 1185 .num_statics = 8, 1186 .cpu_ports = 0x10, /* can be configured as cpu port */ 1187 .port_cnt = 5, /* total cpu and user ports */ 1188 }, 1189 { 1190 .chip_id = 0x8794, 1191 .dev_name = "KSZ8794", 1192 .num_vlans = 4096, 1193 .num_alus = 0, 1194 .num_statics = 8, 1195 .cpu_ports = 0x10, /* can be configured as cpu port */ 1196 .port_cnt = 4, /* total cpu and user ports */ 1197 }, 1198 { 1199 .chip_id = 0x8765, 1200 .dev_name = "KSZ8765", 1201 .num_vlans = 4096, 1202 .num_alus = 0, 1203 .num_statics = 8, 1204 .cpu_ports = 0x10, /* can be configured as cpu port */ 1205 .port_cnt = 5, /* total cpu and user ports */ 1206 }, 1207 }; 1208 1209 static int ksz8795_switch_init(struct ksz_device *dev) 1210 { 1211 int i; 1212 1213 dev->ds->ops = &ksz8795_switch_ops; 1214 1215 for (i = 0; i < ARRAY_SIZE(ksz8795_switch_chips); i++) { 1216 const struct ksz_chip_data *chip = &ksz8795_switch_chips[i]; 1217 1218 if (dev->chip_id == chip->chip_id) { 1219 dev->name = chip->dev_name; 1220 dev->num_vlans = chip->num_vlans; 1221 dev->num_alus = chip->num_alus; 1222 dev->num_statics = chip->num_statics; 1223 dev->port_cnt = chip->port_cnt; 1224 dev->cpu_ports = chip->cpu_ports; 1225 1226 break; 1227 } 1228 } 1229 1230 /* no switch found */ 1231 if (!dev->cpu_ports) 1232 return -ENODEV; 1233 1234 dev->port_mask = BIT(dev->port_cnt) - 1; 1235 dev->port_mask |= dev->host_mask; 1236 1237 dev->reg_mib_cnt = KSZ8795_COUNTER_NUM; 1238 dev->mib_cnt = ARRAY_SIZE(mib_names); 1239 1240 dev->phy_port_cnt = dev->port_cnt - 1; 1241 1242 dev->cpu_port = dev->port_cnt - 1; 1243 dev->host_mask = BIT(dev->cpu_port); 1244 1245 dev->ports = devm_kzalloc(dev->dev, 1246 dev->port_cnt * sizeof(struct ksz_port), 1247 GFP_KERNEL); 1248 if (!dev->ports) 1249 return -ENOMEM; 1250 for (i = 0; i < dev->port_cnt; i++) { 1251 mutex_init(&dev->ports[i].mib.cnt_mutex); 1252 dev->ports[i].mib.counters = 1253 devm_kzalloc(dev->dev, 1254 sizeof(u64) * 1255 (dev->mib_cnt + 1), 1256 GFP_KERNEL); 1257 if (!dev->ports[i].mib.counters) 1258 return -ENOMEM; 1259 } 1260 1261 /* set the real number of ports */ 1262 dev->ds->num_ports = dev->port_cnt; 1263 1264 return 0; 1265 } 1266 1267 static void ksz8795_switch_exit(struct ksz_device *dev) 1268 { 1269 ksz8795_reset_switch(dev); 1270 } 1271 1272 static const struct ksz_dev_ops ksz8795_dev_ops = { 1273 .get_port_addr = ksz8795_get_port_addr, 1274 .cfg_port_member = ksz8795_cfg_port_member, 1275 .flush_dyn_mac_table = ksz8795_flush_dyn_mac_table, 1276 .port_setup = ksz8795_port_setup, 1277 .r_phy = ksz8795_r_phy, 1278 .w_phy = ksz8795_w_phy, 1279 .r_dyn_mac_table = ksz8795_r_dyn_mac_table, 1280 .r_sta_mac_table = ksz8795_r_sta_mac_table, 1281 .w_sta_mac_table = ksz8795_w_sta_mac_table, 1282 .r_mib_cnt = ksz8795_r_mib_cnt, 1283 .r_mib_pkt = ksz8795_r_mib_pkt, 1284 .freeze_mib = ksz8795_freeze_mib, 1285 .port_init_cnt = ksz8795_port_init_cnt, 1286 .shutdown = ksz8795_reset_switch, 1287 .detect = ksz8795_switch_detect, 1288 .init = ksz8795_switch_init, 1289 .exit = ksz8795_switch_exit, 1290 }; 1291 1292 int ksz8795_switch_register(struct ksz_device *dev) 1293 { 1294 return ksz_switch_register(dev, &ksz8795_dev_ops); 1295 } 1296 EXPORT_SYMBOL(ksz8795_switch_register); 1297 1298 MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>"); 1299 MODULE_DESCRIPTION("Microchip KSZ8795 Series Switch DSA Driver"); 1300 MODULE_LICENSE("GPL"); 1301