1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Mediatek MT7530 DSA Switch driver 4 * Copyright (C) 2017 Sean Wang <sean.wang@mediatek.com> 5 */ 6 #include <linux/etherdevice.h> 7 #include <linux/if_bridge.h> 8 #include <linux/iopoll.h> 9 #include <linux/mdio.h> 10 #include <linux/mfd/syscon.h> 11 #include <linux/module.h> 12 #include <linux/netdevice.h> 13 #include <linux/of_mdio.h> 14 #include <linux/of_net.h> 15 #include <linux/of_platform.h> 16 #include <linux/phylink.h> 17 #include <linux/regmap.h> 18 #include <linux/regulator/consumer.h> 19 #include <linux/reset.h> 20 #include <linux/gpio/consumer.h> 21 #include <net/dsa.h> 22 23 #include "mt7530.h" 24 25 /* String, offset, and register size in bytes if different from 4 bytes */ 26 static const struct mt7530_mib_desc mt7530_mib[] = { 27 MIB_DESC(1, 0x00, "TxDrop"), 28 MIB_DESC(1, 0x04, "TxCrcErr"), 29 MIB_DESC(1, 0x08, "TxUnicast"), 30 MIB_DESC(1, 0x0c, "TxMulticast"), 31 MIB_DESC(1, 0x10, "TxBroadcast"), 32 MIB_DESC(1, 0x14, "TxCollision"), 33 MIB_DESC(1, 0x18, "TxSingleCollision"), 34 MIB_DESC(1, 0x1c, "TxMultipleCollision"), 35 MIB_DESC(1, 0x20, "TxDeferred"), 36 MIB_DESC(1, 0x24, "TxLateCollision"), 37 MIB_DESC(1, 0x28, "TxExcessiveCollistion"), 38 MIB_DESC(1, 0x2c, "TxPause"), 39 MIB_DESC(1, 0x30, "TxPktSz64"), 40 MIB_DESC(1, 0x34, "TxPktSz65To127"), 41 MIB_DESC(1, 0x38, "TxPktSz128To255"), 42 MIB_DESC(1, 0x3c, "TxPktSz256To511"), 43 MIB_DESC(1, 0x40, "TxPktSz512To1023"), 44 MIB_DESC(1, 0x44, "Tx1024ToMax"), 45 MIB_DESC(2, 0x48, "TxBytes"), 46 MIB_DESC(1, 0x60, "RxDrop"), 47 MIB_DESC(1, 0x64, "RxFiltering"), 48 MIB_DESC(1, 0x6c, "RxMulticast"), 49 MIB_DESC(1, 0x70, "RxBroadcast"), 50 MIB_DESC(1, 0x74, "RxAlignErr"), 51 MIB_DESC(1, 0x78, "RxCrcErr"), 52 MIB_DESC(1, 0x7c, "RxUnderSizeErr"), 53 MIB_DESC(1, 0x80, "RxFragErr"), 54 MIB_DESC(1, 0x84, "RxOverSzErr"), 55 MIB_DESC(1, 0x88, "RxJabberErr"), 56 MIB_DESC(1, 0x8c, "RxPause"), 57 MIB_DESC(1, 0x90, "RxPktSz64"), 58 MIB_DESC(1, 0x94, "RxPktSz65To127"), 59 MIB_DESC(1, 0x98, "RxPktSz128To255"), 60 MIB_DESC(1, 0x9c, "RxPktSz256To511"), 61 MIB_DESC(1, 0xa0, "RxPktSz512To1023"), 62 MIB_DESC(1, 0xa4, "RxPktSz1024ToMax"), 63 MIB_DESC(2, 0xa8, "RxBytes"), 64 MIB_DESC(1, 0xb0, "RxCtrlDrop"), 65 MIB_DESC(1, 0xb4, "RxIngressDrop"), 66 MIB_DESC(1, 0xb8, "RxArlDrop"), 67 }; 68 69 static int 70 core_read_mmd_indirect(struct mt7530_priv *priv, int prtad, int devad) 71 { 72 struct mii_bus *bus = priv->bus; 73 int value, ret; 74 75 /* Write the desired MMD Devad */ 76 ret = bus->write(bus, 0, MII_MMD_CTRL, devad); 77 if (ret < 0) 78 goto err; 79 80 /* Write the desired MMD register address */ 81 ret = bus->write(bus, 0, MII_MMD_DATA, prtad); 82 if (ret < 0) 83 goto err; 84 85 /* Select the Function : DATA with no post increment */ 86 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); 87 if (ret < 0) 88 goto err; 89 90 /* Read the content of the MMD's selected register */ 91 value = bus->read(bus, 0, MII_MMD_DATA); 92 93 return value; 94 err: 95 dev_err(&bus->dev, "failed to read mmd register\n"); 96 97 return ret; 98 } 99 100 static int 101 core_write_mmd_indirect(struct mt7530_priv *priv, int prtad, 102 int devad, u32 data) 103 { 104 struct mii_bus *bus = priv->bus; 105 int ret; 106 107 /* Write the desired MMD Devad */ 108 ret = bus->write(bus, 0, MII_MMD_CTRL, devad); 109 if (ret < 0) 110 goto err; 111 112 /* Write the desired MMD register address */ 113 ret = bus->write(bus, 0, MII_MMD_DATA, prtad); 114 if (ret < 0) 115 goto err; 116 117 /* Select the Function : DATA with no post increment */ 118 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); 119 if (ret < 0) 120 goto err; 121 122 /* Write the data into MMD's selected register */ 123 ret = bus->write(bus, 0, MII_MMD_DATA, data); 124 err: 125 if (ret < 0) 126 dev_err(&bus->dev, 127 "failed to write mmd register\n"); 128 return ret; 129 } 130 131 static void 132 core_write(struct mt7530_priv *priv, u32 reg, u32 val) 133 { 134 struct mii_bus *bus = priv->bus; 135 136 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 137 138 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val); 139 140 mutex_unlock(&bus->mdio_lock); 141 } 142 143 static void 144 core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set) 145 { 146 struct mii_bus *bus = priv->bus; 147 u32 val; 148 149 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 150 151 val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2); 152 val &= ~mask; 153 val |= set; 154 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val); 155 156 mutex_unlock(&bus->mdio_lock); 157 } 158 159 static void 160 core_set(struct mt7530_priv *priv, u32 reg, u32 val) 161 { 162 core_rmw(priv, reg, 0, val); 163 } 164 165 static void 166 core_clear(struct mt7530_priv *priv, u32 reg, u32 val) 167 { 168 core_rmw(priv, reg, val, 0); 169 } 170 171 static int 172 mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val) 173 { 174 struct mii_bus *bus = priv->bus; 175 u16 page, r, lo, hi; 176 int ret; 177 178 page = (reg >> 6) & 0x3ff; 179 r = (reg >> 2) & 0xf; 180 lo = val & 0xffff; 181 hi = val >> 16; 182 183 /* MT7530 uses 31 as the pseudo port */ 184 ret = bus->write(bus, 0x1f, 0x1f, page); 185 if (ret < 0) 186 goto err; 187 188 ret = bus->write(bus, 0x1f, r, lo); 189 if (ret < 0) 190 goto err; 191 192 ret = bus->write(bus, 0x1f, 0x10, hi); 193 err: 194 if (ret < 0) 195 dev_err(&bus->dev, 196 "failed to write mt7530 register\n"); 197 return ret; 198 } 199 200 static u32 201 mt7530_mii_read(struct mt7530_priv *priv, u32 reg) 202 { 203 struct mii_bus *bus = priv->bus; 204 u16 page, r, lo, hi; 205 int ret; 206 207 page = (reg >> 6) & 0x3ff; 208 r = (reg >> 2) & 0xf; 209 210 /* MT7530 uses 31 as the pseudo port */ 211 ret = bus->write(bus, 0x1f, 0x1f, page); 212 if (ret < 0) { 213 dev_err(&bus->dev, 214 "failed to read mt7530 register\n"); 215 return ret; 216 } 217 218 lo = bus->read(bus, 0x1f, r); 219 hi = bus->read(bus, 0x1f, 0x10); 220 221 return (hi << 16) | (lo & 0xffff); 222 } 223 224 static void 225 mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val) 226 { 227 struct mii_bus *bus = priv->bus; 228 229 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 230 231 mt7530_mii_write(priv, reg, val); 232 233 mutex_unlock(&bus->mdio_lock); 234 } 235 236 static u32 237 _mt7530_unlocked_read(struct mt7530_dummy_poll *p) 238 { 239 return mt7530_mii_read(p->priv, p->reg); 240 } 241 242 static u32 243 _mt7530_read(struct mt7530_dummy_poll *p) 244 { 245 struct mii_bus *bus = p->priv->bus; 246 u32 val; 247 248 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 249 250 val = mt7530_mii_read(p->priv, p->reg); 251 252 mutex_unlock(&bus->mdio_lock); 253 254 return val; 255 } 256 257 static u32 258 mt7530_read(struct mt7530_priv *priv, u32 reg) 259 { 260 struct mt7530_dummy_poll p; 261 262 INIT_MT7530_DUMMY_POLL(&p, priv, reg); 263 return _mt7530_read(&p); 264 } 265 266 static void 267 mt7530_rmw(struct mt7530_priv *priv, u32 reg, 268 u32 mask, u32 set) 269 { 270 struct mii_bus *bus = priv->bus; 271 u32 val; 272 273 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 274 275 val = mt7530_mii_read(priv, reg); 276 val &= ~mask; 277 val |= set; 278 mt7530_mii_write(priv, reg, val); 279 280 mutex_unlock(&bus->mdio_lock); 281 } 282 283 static void 284 mt7530_set(struct mt7530_priv *priv, u32 reg, u32 val) 285 { 286 mt7530_rmw(priv, reg, 0, val); 287 } 288 289 static void 290 mt7530_clear(struct mt7530_priv *priv, u32 reg, u32 val) 291 { 292 mt7530_rmw(priv, reg, val, 0); 293 } 294 295 static int 296 mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp) 297 { 298 u32 val; 299 int ret; 300 struct mt7530_dummy_poll p; 301 302 /* Set the command operating upon the MAC address entries */ 303 val = ATC_BUSY | ATC_MAT(0) | cmd; 304 mt7530_write(priv, MT7530_ATC, val); 305 306 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_ATC); 307 ret = readx_poll_timeout(_mt7530_read, &p, val, 308 !(val & ATC_BUSY), 20, 20000); 309 if (ret < 0) { 310 dev_err(priv->dev, "reset timeout\n"); 311 return ret; 312 } 313 314 /* Additional sanity for read command if the specified 315 * entry is invalid 316 */ 317 val = mt7530_read(priv, MT7530_ATC); 318 if ((cmd == MT7530_FDB_READ) && (val & ATC_INVALID)) 319 return -EINVAL; 320 321 if (rsp) 322 *rsp = val; 323 324 return 0; 325 } 326 327 static void 328 mt7530_fdb_read(struct mt7530_priv *priv, struct mt7530_fdb *fdb) 329 { 330 u32 reg[3]; 331 int i; 332 333 /* Read from ARL table into an array */ 334 for (i = 0; i < 3; i++) { 335 reg[i] = mt7530_read(priv, MT7530_TSRA1 + (i * 4)); 336 337 dev_dbg(priv->dev, "%s(%d) reg[%d]=0x%x\n", 338 __func__, __LINE__, i, reg[i]); 339 } 340 341 fdb->vid = (reg[1] >> CVID) & CVID_MASK; 342 fdb->aging = (reg[2] >> AGE_TIMER) & AGE_TIMER_MASK; 343 fdb->port_mask = (reg[2] >> PORT_MAP) & PORT_MAP_MASK; 344 fdb->mac[0] = (reg[0] >> MAC_BYTE_0) & MAC_BYTE_MASK; 345 fdb->mac[1] = (reg[0] >> MAC_BYTE_1) & MAC_BYTE_MASK; 346 fdb->mac[2] = (reg[0] >> MAC_BYTE_2) & MAC_BYTE_MASK; 347 fdb->mac[3] = (reg[0] >> MAC_BYTE_3) & MAC_BYTE_MASK; 348 fdb->mac[4] = (reg[1] >> MAC_BYTE_4) & MAC_BYTE_MASK; 349 fdb->mac[5] = (reg[1] >> MAC_BYTE_5) & MAC_BYTE_MASK; 350 fdb->noarp = ((reg[2] >> ENT_STATUS) & ENT_STATUS_MASK) == STATIC_ENT; 351 } 352 353 static void 354 mt7530_fdb_write(struct mt7530_priv *priv, u16 vid, 355 u8 port_mask, const u8 *mac, 356 u8 aging, u8 type) 357 { 358 u32 reg[3] = { 0 }; 359 int i; 360 361 reg[1] |= vid & CVID_MASK; 362 reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER; 363 reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP; 364 /* STATIC_ENT indicate that entry is static wouldn't 365 * be aged out and STATIC_EMP specified as erasing an 366 * entry 367 */ 368 reg[2] |= (type & ENT_STATUS_MASK) << ENT_STATUS; 369 reg[1] |= mac[5] << MAC_BYTE_5; 370 reg[1] |= mac[4] << MAC_BYTE_4; 371 reg[0] |= mac[3] << MAC_BYTE_3; 372 reg[0] |= mac[2] << MAC_BYTE_2; 373 reg[0] |= mac[1] << MAC_BYTE_1; 374 reg[0] |= mac[0] << MAC_BYTE_0; 375 376 /* Write array into the ARL table */ 377 for (i = 0; i < 3; i++) 378 mt7530_write(priv, MT7530_ATA1 + (i * 4), reg[i]); 379 } 380 381 /* Setup TX circuit including relevant PAD and driving */ 382 static int 383 mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface) 384 { 385 struct mt7530_priv *priv = ds->priv; 386 u32 ncpo1, ssc_delta, trgint, i, xtal; 387 388 xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK; 389 390 if (xtal == HWTRAP_XTAL_20MHZ) { 391 dev_err(priv->dev, 392 "%s: MT7530 with a 20MHz XTAL is not supported!\n", 393 __func__); 394 return -EINVAL; 395 } 396 397 switch (interface) { 398 case PHY_INTERFACE_MODE_RGMII: 399 trgint = 0; 400 /* PLL frequency: 125MHz */ 401 ncpo1 = 0x0c80; 402 break; 403 case PHY_INTERFACE_MODE_TRGMII: 404 trgint = 1; 405 if (priv->id == ID_MT7621) { 406 /* PLL frequency: 150MHz: 1.2GBit */ 407 if (xtal == HWTRAP_XTAL_40MHZ) 408 ncpo1 = 0x0780; 409 if (xtal == HWTRAP_XTAL_25MHZ) 410 ncpo1 = 0x0a00; 411 } else { /* PLL frequency: 250MHz: 2.0Gbit */ 412 if (xtal == HWTRAP_XTAL_40MHZ) 413 ncpo1 = 0x0c80; 414 if (xtal == HWTRAP_XTAL_25MHZ) 415 ncpo1 = 0x1400; 416 } 417 break; 418 default: 419 dev_err(priv->dev, "xMII interface %d not supported\n", 420 interface); 421 return -EINVAL; 422 } 423 424 if (xtal == HWTRAP_XTAL_25MHZ) 425 ssc_delta = 0x57; 426 else 427 ssc_delta = 0x87; 428 429 mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, 430 P6_INTF_MODE(trgint)); 431 432 /* Lower Tx Driving for TRGMII path */ 433 for (i = 0 ; i < NUM_TRGMII_CTRL ; i++) 434 mt7530_write(priv, MT7530_TRGMII_TD_ODT(i), 435 TD_DM_DRVP(8) | TD_DM_DRVN(8)); 436 437 /* Setup core clock for MT7530 */ 438 if (!trgint) { 439 /* Disable MT7530 core clock */ 440 core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); 441 442 /* Disable PLL, since phy_device has not yet been created 443 * provided for phy_[read,write]_mmd_indirect is called, we 444 * provide our own core_write_mmd_indirect to complete this 445 * function. 446 */ 447 core_write_mmd_indirect(priv, 448 CORE_GSWPLL_GRP1, 449 MDIO_MMD_VEND2, 450 0); 451 452 /* Set core clock into 500Mhz */ 453 core_write(priv, CORE_GSWPLL_GRP2, 454 RG_GSWPLL_POSDIV_500M(1) | 455 RG_GSWPLL_FBKDIV_500M(25)); 456 457 /* Enable PLL */ 458 core_write(priv, CORE_GSWPLL_GRP1, 459 RG_GSWPLL_EN_PRE | 460 RG_GSWPLL_POSDIV_200M(2) | 461 RG_GSWPLL_FBKDIV_200M(32)); 462 463 /* Enable MT7530 core clock */ 464 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); 465 } 466 467 /* Setup the MT7530 TRGMII Tx Clock */ 468 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); 469 core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1)); 470 core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0)); 471 core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta)); 472 core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta)); 473 core_write(priv, CORE_PLL_GROUP4, 474 RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN | 475 RG_SYSPLL_BIAS_LPF_EN); 476 core_write(priv, CORE_PLL_GROUP2, 477 RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN | 478 RG_SYSPLL_POSDIV(1)); 479 core_write(priv, CORE_PLL_GROUP7, 480 RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) | 481 RG_LCDDS_PWDB | RG_LCDDS_ISO_EN); 482 core_set(priv, CORE_TRGMII_GSW_CLK_CG, 483 REG_GSWCK_EN | REG_TRGMIICK_EN); 484 485 if (!trgint) 486 for (i = 0 ; i < NUM_TRGMII_CTRL; i++) 487 mt7530_rmw(priv, MT7530_TRGMII_RD(i), 488 RD_TAP_MASK, RD_TAP(16)); 489 return 0; 490 } 491 492 static bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv) 493 { 494 u32 val; 495 496 val = mt7530_read(priv, MT7531_TOP_SIG_SR); 497 498 return (val & PAD_DUAL_SGMII_EN) != 0; 499 } 500 501 static int 502 mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface) 503 { 504 struct mt7530_priv *priv = ds->priv; 505 u32 top_sig; 506 u32 hwstrap; 507 u32 xtal; 508 u32 val; 509 510 if (mt7531_dual_sgmii_supported(priv)) 511 return 0; 512 513 val = mt7530_read(priv, MT7531_CREV); 514 top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR); 515 hwstrap = mt7530_read(priv, MT7531_HWTRAP); 516 if ((val & CHIP_REV_M) > 0) 517 xtal = (top_sig & PAD_MCM_SMI_EN) ? HWTRAP_XTAL_FSEL_40MHZ : 518 HWTRAP_XTAL_FSEL_25MHZ; 519 else 520 xtal = hwstrap & HWTRAP_XTAL_FSEL_MASK; 521 522 /* Step 1 : Disable MT7531 COREPLL */ 523 val = mt7530_read(priv, MT7531_PLLGP_EN); 524 val &= ~EN_COREPLL; 525 mt7530_write(priv, MT7531_PLLGP_EN, val); 526 527 /* Step 2: switch to XTAL output */ 528 val = mt7530_read(priv, MT7531_PLLGP_EN); 529 val |= SW_CLKSW; 530 mt7530_write(priv, MT7531_PLLGP_EN, val); 531 532 val = mt7530_read(priv, MT7531_PLLGP_CR0); 533 val &= ~RG_COREPLL_EN; 534 mt7530_write(priv, MT7531_PLLGP_CR0, val); 535 536 /* Step 3: disable PLLGP and enable program PLLGP */ 537 val = mt7530_read(priv, MT7531_PLLGP_EN); 538 val |= SW_PLLGP; 539 mt7530_write(priv, MT7531_PLLGP_EN, val); 540 541 /* Step 4: program COREPLL output frequency to 500MHz */ 542 val = mt7530_read(priv, MT7531_PLLGP_CR0); 543 val &= ~RG_COREPLL_POSDIV_M; 544 val |= 2 << RG_COREPLL_POSDIV_S; 545 mt7530_write(priv, MT7531_PLLGP_CR0, val); 546 usleep_range(25, 35); 547 548 switch (xtal) { 549 case HWTRAP_XTAL_FSEL_25MHZ: 550 val = mt7530_read(priv, MT7531_PLLGP_CR0); 551 val &= ~RG_COREPLL_SDM_PCW_M; 552 val |= 0x140000 << RG_COREPLL_SDM_PCW_S; 553 mt7530_write(priv, MT7531_PLLGP_CR0, val); 554 break; 555 case HWTRAP_XTAL_FSEL_40MHZ: 556 val = mt7530_read(priv, MT7531_PLLGP_CR0); 557 val &= ~RG_COREPLL_SDM_PCW_M; 558 val |= 0x190000 << RG_COREPLL_SDM_PCW_S; 559 mt7530_write(priv, MT7531_PLLGP_CR0, val); 560 break; 561 }; 562 563 /* Set feedback divide ratio update signal to high */ 564 val = mt7530_read(priv, MT7531_PLLGP_CR0); 565 val |= RG_COREPLL_SDM_PCW_CHG; 566 mt7530_write(priv, MT7531_PLLGP_CR0, val); 567 /* Wait for at least 16 XTAL clocks */ 568 usleep_range(10, 20); 569 570 /* Step 5: set feedback divide ratio update signal to low */ 571 val = mt7530_read(priv, MT7531_PLLGP_CR0); 572 val &= ~RG_COREPLL_SDM_PCW_CHG; 573 mt7530_write(priv, MT7531_PLLGP_CR0, val); 574 575 /* Enable 325M clock for SGMII */ 576 mt7530_write(priv, MT7531_ANA_PLLGP_CR5, 0xad0000); 577 578 /* Enable 250SSC clock for RGMII */ 579 mt7530_write(priv, MT7531_ANA_PLLGP_CR2, 0x4f40000); 580 581 /* Step 6: Enable MT7531 PLL */ 582 val = mt7530_read(priv, MT7531_PLLGP_CR0); 583 val |= RG_COREPLL_EN; 584 mt7530_write(priv, MT7531_PLLGP_CR0, val); 585 586 val = mt7530_read(priv, MT7531_PLLGP_EN); 587 val |= EN_COREPLL; 588 mt7530_write(priv, MT7531_PLLGP_EN, val); 589 usleep_range(25, 35); 590 591 return 0; 592 } 593 594 static void 595 mt7530_mib_reset(struct dsa_switch *ds) 596 { 597 struct mt7530_priv *priv = ds->priv; 598 599 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_FLUSH); 600 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE); 601 } 602 603 static int mt7530_phy_read(struct dsa_switch *ds, int port, int regnum) 604 { 605 struct mt7530_priv *priv = ds->priv; 606 607 return mdiobus_read_nested(priv->bus, port, regnum); 608 } 609 610 static int mt7530_phy_write(struct dsa_switch *ds, int port, int regnum, 611 u16 val) 612 { 613 struct mt7530_priv *priv = ds->priv; 614 615 return mdiobus_write_nested(priv->bus, port, regnum, val); 616 } 617 618 static int 619 mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad, 620 int regnum) 621 { 622 struct mii_bus *bus = priv->bus; 623 struct mt7530_dummy_poll p; 624 u32 reg, val; 625 int ret; 626 627 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC); 628 629 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 630 631 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 632 !(val & MT7531_PHY_ACS_ST), 20, 100000); 633 if (ret < 0) { 634 dev_err(priv->dev, "poll timeout\n"); 635 goto out; 636 } 637 638 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) | 639 MT7531_MDIO_DEV_ADDR(devad) | regnum; 640 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST); 641 642 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 643 !(val & MT7531_PHY_ACS_ST), 20, 100000); 644 if (ret < 0) { 645 dev_err(priv->dev, "poll timeout\n"); 646 goto out; 647 } 648 649 reg = MT7531_MDIO_CL45_READ | MT7531_MDIO_PHY_ADDR(port) | 650 MT7531_MDIO_DEV_ADDR(devad); 651 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST); 652 653 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 654 !(val & MT7531_PHY_ACS_ST), 20, 100000); 655 if (ret < 0) { 656 dev_err(priv->dev, "poll timeout\n"); 657 goto out; 658 } 659 660 ret = val & MT7531_MDIO_RW_DATA_MASK; 661 out: 662 mutex_unlock(&bus->mdio_lock); 663 664 return ret; 665 } 666 667 static int 668 mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad, 669 int regnum, u32 data) 670 { 671 struct mii_bus *bus = priv->bus; 672 struct mt7530_dummy_poll p; 673 u32 val, reg; 674 int ret; 675 676 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC); 677 678 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 679 680 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 681 !(val & MT7531_PHY_ACS_ST), 20, 100000); 682 if (ret < 0) { 683 dev_err(priv->dev, "poll timeout\n"); 684 goto out; 685 } 686 687 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) | 688 MT7531_MDIO_DEV_ADDR(devad) | regnum; 689 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST); 690 691 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 692 !(val & MT7531_PHY_ACS_ST), 20, 100000); 693 if (ret < 0) { 694 dev_err(priv->dev, "poll timeout\n"); 695 goto out; 696 } 697 698 reg = MT7531_MDIO_CL45_WRITE | MT7531_MDIO_PHY_ADDR(port) | 699 MT7531_MDIO_DEV_ADDR(devad) | data; 700 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST); 701 702 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 703 !(val & MT7531_PHY_ACS_ST), 20, 100000); 704 if (ret < 0) { 705 dev_err(priv->dev, "poll timeout\n"); 706 goto out; 707 } 708 709 out: 710 mutex_unlock(&bus->mdio_lock); 711 712 return ret; 713 } 714 715 static int 716 mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum) 717 { 718 struct mii_bus *bus = priv->bus; 719 struct mt7530_dummy_poll p; 720 int ret; 721 u32 val; 722 723 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC); 724 725 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 726 727 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 728 !(val & MT7531_PHY_ACS_ST), 20, 100000); 729 if (ret < 0) { 730 dev_err(priv->dev, "poll timeout\n"); 731 goto out; 732 } 733 734 val = MT7531_MDIO_CL22_READ | MT7531_MDIO_PHY_ADDR(port) | 735 MT7531_MDIO_REG_ADDR(regnum); 736 737 mt7530_mii_write(priv, MT7531_PHY_IAC, val | MT7531_PHY_ACS_ST); 738 739 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val, 740 !(val & MT7531_PHY_ACS_ST), 20, 100000); 741 if (ret < 0) { 742 dev_err(priv->dev, "poll timeout\n"); 743 goto out; 744 } 745 746 ret = val & MT7531_MDIO_RW_DATA_MASK; 747 out: 748 mutex_unlock(&bus->mdio_lock); 749 750 return ret; 751 } 752 753 static int 754 mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum, 755 u16 data) 756 { 757 struct mii_bus *bus = priv->bus; 758 struct mt7530_dummy_poll p; 759 int ret; 760 u32 reg; 761 762 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC); 763 764 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); 765 766 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg, 767 !(reg & MT7531_PHY_ACS_ST), 20, 100000); 768 if (ret < 0) { 769 dev_err(priv->dev, "poll timeout\n"); 770 goto out; 771 } 772 773 reg = MT7531_MDIO_CL22_WRITE | MT7531_MDIO_PHY_ADDR(port) | 774 MT7531_MDIO_REG_ADDR(regnum) | data; 775 776 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST); 777 778 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg, 779 !(reg & MT7531_PHY_ACS_ST), 20, 100000); 780 if (ret < 0) { 781 dev_err(priv->dev, "poll timeout\n"); 782 goto out; 783 } 784 785 out: 786 mutex_unlock(&bus->mdio_lock); 787 788 return ret; 789 } 790 791 static int 792 mt7531_ind_phy_read(struct dsa_switch *ds, int port, int regnum) 793 { 794 struct mt7530_priv *priv = ds->priv; 795 int devad; 796 int ret; 797 798 if (regnum & MII_ADDR_C45) { 799 devad = (regnum >> MII_DEVADDR_C45_SHIFT) & 0x1f; 800 ret = mt7531_ind_c45_phy_read(priv, port, devad, 801 regnum & MII_REGADDR_C45_MASK); 802 } else { 803 ret = mt7531_ind_c22_phy_read(priv, port, regnum); 804 } 805 806 return ret; 807 } 808 809 static int 810 mt7531_ind_phy_write(struct dsa_switch *ds, int port, int regnum, 811 u16 data) 812 { 813 struct mt7530_priv *priv = ds->priv; 814 int devad; 815 int ret; 816 817 if (regnum & MII_ADDR_C45) { 818 devad = (regnum >> MII_DEVADDR_C45_SHIFT) & 0x1f; 819 ret = mt7531_ind_c45_phy_write(priv, port, devad, 820 regnum & MII_REGADDR_C45_MASK, 821 data); 822 } else { 823 ret = mt7531_ind_c22_phy_write(priv, port, regnum, data); 824 } 825 826 return ret; 827 } 828 829 static void 830 mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset, 831 uint8_t *data) 832 { 833 int i; 834 835 if (stringset != ETH_SS_STATS) 836 return; 837 838 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) 839 strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name, 840 ETH_GSTRING_LEN); 841 } 842 843 static void 844 mt7530_get_ethtool_stats(struct dsa_switch *ds, int port, 845 uint64_t *data) 846 { 847 struct mt7530_priv *priv = ds->priv; 848 const struct mt7530_mib_desc *mib; 849 u32 reg, i; 850 u64 hi; 851 852 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) { 853 mib = &mt7530_mib[i]; 854 reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset; 855 856 data[i] = mt7530_read(priv, reg); 857 if (mib->size == 2) { 858 hi = mt7530_read(priv, reg + 4); 859 data[i] |= hi << 32; 860 } 861 } 862 } 863 864 static int 865 mt7530_get_sset_count(struct dsa_switch *ds, int port, int sset) 866 { 867 if (sset != ETH_SS_STATS) 868 return 0; 869 870 return ARRAY_SIZE(mt7530_mib); 871 } 872 873 static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface) 874 { 875 struct mt7530_priv *priv = ds->priv; 876 u8 tx_delay = 0; 877 int val; 878 879 mutex_lock(&priv->reg_mutex); 880 881 val = mt7530_read(priv, MT7530_MHWTRAP); 882 883 val |= MHWTRAP_MANUAL | MHWTRAP_P5_MAC_SEL | MHWTRAP_P5_DIS; 884 val &= ~MHWTRAP_P5_RGMII_MODE & ~MHWTRAP_PHY0_SEL; 885 886 switch (priv->p5_intf_sel) { 887 case P5_INTF_SEL_PHY_P0: 888 /* MT7530_P5_MODE_GPHY_P0: 2nd GMAC -> P5 -> P0 */ 889 val |= MHWTRAP_PHY0_SEL; 890 fallthrough; 891 case P5_INTF_SEL_PHY_P4: 892 /* MT7530_P5_MODE_GPHY_P4: 2nd GMAC -> P5 -> P4 */ 893 val &= ~MHWTRAP_P5_MAC_SEL & ~MHWTRAP_P5_DIS; 894 895 /* Setup the MAC by default for the cpu port */ 896 mt7530_write(priv, MT7530_PMCR_P(5), 0x56300); 897 break; 898 case P5_INTF_SEL_GMAC5: 899 /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */ 900 val &= ~MHWTRAP_P5_DIS; 901 break; 902 case P5_DISABLED: 903 interface = PHY_INTERFACE_MODE_NA; 904 break; 905 default: 906 dev_err(ds->dev, "Unsupported p5_intf_sel %d\n", 907 priv->p5_intf_sel); 908 goto unlock_exit; 909 } 910 911 /* Setup RGMII settings */ 912 if (phy_interface_mode_is_rgmii(interface)) { 913 val |= MHWTRAP_P5_RGMII_MODE; 914 915 /* P5 RGMII RX Clock Control: delay setting for 1000M */ 916 mt7530_write(priv, MT7530_P5RGMIIRXCR, CSR_RGMII_EDGE_ALIGN); 917 918 /* Don't set delay in DSA mode */ 919 if (!dsa_is_dsa_port(priv->ds, 5) && 920 (interface == PHY_INTERFACE_MODE_RGMII_TXID || 921 interface == PHY_INTERFACE_MODE_RGMII_ID)) 922 tx_delay = 4; /* n * 0.5 ns */ 923 924 /* P5 RGMII TX Clock Control: delay x */ 925 mt7530_write(priv, MT7530_P5RGMIITXCR, 926 CSR_RGMII_TXC_CFG(0x10 + tx_delay)); 927 928 /* reduce P5 RGMII Tx driving, 8mA */ 929 mt7530_write(priv, MT7530_IO_DRV_CR, 930 P5_IO_CLK_DRV(1) | P5_IO_DATA_DRV(1)); 931 } 932 933 mt7530_write(priv, MT7530_MHWTRAP, val); 934 935 dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n", 936 val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface)); 937 938 priv->p5_interface = interface; 939 940 unlock_exit: 941 mutex_unlock(&priv->reg_mutex); 942 } 943 944 static int 945 mt753x_cpu_port_enable(struct dsa_switch *ds, int port) 946 { 947 struct mt7530_priv *priv = ds->priv; 948 int ret; 949 950 /* Setup max capability of CPU port at first */ 951 if (priv->info->cpu_port_config) { 952 ret = priv->info->cpu_port_config(ds, port); 953 if (ret) 954 return ret; 955 } 956 957 /* Enable Mediatek header mode on the cpu port */ 958 mt7530_write(priv, MT7530_PVC_P(port), 959 PORT_SPEC_TAG); 960 961 /* Unknown multicast frame forwarding to the cpu port */ 962 mt7530_rmw(priv, MT7530_MFC, UNM_FFP_MASK, UNM_FFP(BIT(port))); 963 964 /* Set CPU port number */ 965 if (priv->id == ID_MT7621) 966 mt7530_rmw(priv, MT7530_MFC, CPU_MASK, CPU_EN | CPU_PORT(port)); 967 968 /* CPU port gets connected to all user ports of 969 * the switch. 970 */ 971 mt7530_write(priv, MT7530_PCR_P(port), 972 PCR_MATRIX(dsa_user_ports(priv->ds))); 973 974 return 0; 975 } 976 977 static int 978 mt7530_port_enable(struct dsa_switch *ds, int port, 979 struct phy_device *phy) 980 { 981 struct mt7530_priv *priv = ds->priv; 982 983 if (!dsa_is_user_port(ds, port)) 984 return 0; 985 986 mutex_lock(&priv->reg_mutex); 987 988 /* Allow the user port gets connected to the cpu port and also 989 * restore the port matrix if the port is the member of a certain 990 * bridge. 991 */ 992 priv->ports[port].pm |= PCR_MATRIX(BIT(MT7530_CPU_PORT)); 993 priv->ports[port].enable = true; 994 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, 995 priv->ports[port].pm); 996 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); 997 998 mutex_unlock(&priv->reg_mutex); 999 1000 return 0; 1001 } 1002 1003 static void 1004 mt7530_port_disable(struct dsa_switch *ds, int port) 1005 { 1006 struct mt7530_priv *priv = ds->priv; 1007 1008 if (!dsa_is_user_port(ds, port)) 1009 return; 1010 1011 mutex_lock(&priv->reg_mutex); 1012 1013 /* Clear up all port matrix which could be restored in the next 1014 * enablement for the port. 1015 */ 1016 priv->ports[port].enable = false; 1017 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, 1018 PCR_MATRIX_CLR); 1019 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); 1020 1021 mutex_unlock(&priv->reg_mutex); 1022 } 1023 1024 static void 1025 mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state) 1026 { 1027 struct mt7530_priv *priv = ds->priv; 1028 u32 stp_state; 1029 1030 switch (state) { 1031 case BR_STATE_DISABLED: 1032 stp_state = MT7530_STP_DISABLED; 1033 break; 1034 case BR_STATE_BLOCKING: 1035 stp_state = MT7530_STP_BLOCKING; 1036 break; 1037 case BR_STATE_LISTENING: 1038 stp_state = MT7530_STP_LISTENING; 1039 break; 1040 case BR_STATE_LEARNING: 1041 stp_state = MT7530_STP_LEARNING; 1042 break; 1043 case BR_STATE_FORWARDING: 1044 default: 1045 stp_state = MT7530_STP_FORWARDING; 1046 break; 1047 } 1048 1049 mt7530_rmw(priv, MT7530_SSP_P(port), FID_PST_MASK, stp_state); 1050 } 1051 1052 static int 1053 mt7530_port_bridge_join(struct dsa_switch *ds, int port, 1054 struct net_device *bridge) 1055 { 1056 struct mt7530_priv *priv = ds->priv; 1057 u32 port_bitmap = BIT(MT7530_CPU_PORT); 1058 int i; 1059 1060 mutex_lock(&priv->reg_mutex); 1061 1062 for (i = 0; i < MT7530_NUM_PORTS; i++) { 1063 /* Add this port to the port matrix of the other ports in the 1064 * same bridge. If the port is disabled, port matrix is kept 1065 * and not being setup until the port becomes enabled. 1066 */ 1067 if (dsa_is_user_port(ds, i) && i != port) { 1068 if (dsa_to_port(ds, i)->bridge_dev != bridge) 1069 continue; 1070 if (priv->ports[i].enable) 1071 mt7530_set(priv, MT7530_PCR_P(i), 1072 PCR_MATRIX(BIT(port))); 1073 priv->ports[i].pm |= PCR_MATRIX(BIT(port)); 1074 1075 port_bitmap |= BIT(i); 1076 } 1077 } 1078 1079 /* Add the all other ports to this port matrix. */ 1080 if (priv->ports[port].enable) 1081 mt7530_rmw(priv, MT7530_PCR_P(port), 1082 PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap)); 1083 priv->ports[port].pm |= PCR_MATRIX(port_bitmap); 1084 1085 mutex_unlock(&priv->reg_mutex); 1086 1087 return 0; 1088 } 1089 1090 static void 1091 mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port) 1092 { 1093 struct mt7530_priv *priv = ds->priv; 1094 bool all_user_ports_removed = true; 1095 int i; 1096 1097 /* When a port is removed from the bridge, the port would be set up 1098 * back to the default as is at initial boot which is a VLAN-unaware 1099 * port. 1100 */ 1101 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, 1102 MT7530_PORT_MATRIX_MODE); 1103 mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK, 1104 VLAN_ATTR(MT7530_VLAN_TRANSPARENT) | 1105 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT)); 1106 1107 for (i = 0; i < MT7530_NUM_PORTS; i++) { 1108 if (dsa_is_user_port(ds, i) && 1109 dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) { 1110 all_user_ports_removed = false; 1111 break; 1112 } 1113 } 1114 1115 /* CPU port also does the same thing until all user ports belonging to 1116 * the CPU port get out of VLAN filtering mode. 1117 */ 1118 if (all_user_ports_removed) { 1119 mt7530_write(priv, MT7530_PCR_P(MT7530_CPU_PORT), 1120 PCR_MATRIX(dsa_user_ports(priv->ds))); 1121 mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT), PORT_SPEC_TAG 1122 | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT)); 1123 } 1124 } 1125 1126 static void 1127 mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port) 1128 { 1129 struct mt7530_priv *priv = ds->priv; 1130 1131 /* The real fabric path would be decided on the membership in the 1132 * entry of VLAN table. PCR_MATRIX set up here with ALL_MEMBERS 1133 * means potential VLAN can be consisting of certain subset of all 1134 * ports. 1135 */ 1136 mt7530_rmw(priv, MT7530_PCR_P(port), 1137 PCR_MATRIX_MASK, PCR_MATRIX(MT7530_ALL_MEMBERS)); 1138 1139 /* Trapped into security mode allows packet forwarding through VLAN 1140 * table lookup. CPU port is set to fallback mode to let untagged 1141 * frames pass through. 1142 */ 1143 if (dsa_is_cpu_port(ds, port)) 1144 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, 1145 MT7530_PORT_FALLBACK_MODE); 1146 else 1147 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, 1148 MT7530_PORT_SECURITY_MODE); 1149 1150 /* Set the port as a user port which is to be able to recognize VID 1151 * from incoming packets before fetching entry within the VLAN table. 1152 */ 1153 mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK, 1154 VLAN_ATTR(MT7530_VLAN_USER) | 1155 PVC_EG_TAG(MT7530_VLAN_EG_DISABLED)); 1156 } 1157 1158 static void 1159 mt7530_port_bridge_leave(struct dsa_switch *ds, int port, 1160 struct net_device *bridge) 1161 { 1162 struct mt7530_priv *priv = ds->priv; 1163 int i; 1164 1165 mutex_lock(&priv->reg_mutex); 1166 1167 for (i = 0; i < MT7530_NUM_PORTS; i++) { 1168 /* Remove this port from the port matrix of the other ports 1169 * in the same bridge. If the port is disabled, port matrix 1170 * is kept and not being setup until the port becomes enabled. 1171 * And the other port's port matrix cannot be broken when the 1172 * other port is still a VLAN-aware port. 1173 */ 1174 if (dsa_is_user_port(ds, i) && i != port && 1175 !dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) { 1176 if (dsa_to_port(ds, i)->bridge_dev != bridge) 1177 continue; 1178 if (priv->ports[i].enable) 1179 mt7530_clear(priv, MT7530_PCR_P(i), 1180 PCR_MATRIX(BIT(port))); 1181 priv->ports[i].pm &= ~PCR_MATRIX(BIT(port)); 1182 } 1183 } 1184 1185 /* Set the cpu port to be the only one in the port matrix of 1186 * this port. 1187 */ 1188 if (priv->ports[port].enable) 1189 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, 1190 PCR_MATRIX(BIT(MT7530_CPU_PORT))); 1191 priv->ports[port].pm = PCR_MATRIX(BIT(MT7530_CPU_PORT)); 1192 1193 mutex_unlock(&priv->reg_mutex); 1194 } 1195 1196 static int 1197 mt7530_port_fdb_add(struct dsa_switch *ds, int port, 1198 const unsigned char *addr, u16 vid) 1199 { 1200 struct mt7530_priv *priv = ds->priv; 1201 int ret; 1202 u8 port_mask = BIT(port); 1203 1204 mutex_lock(&priv->reg_mutex); 1205 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT); 1206 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL); 1207 mutex_unlock(&priv->reg_mutex); 1208 1209 return ret; 1210 } 1211 1212 static int 1213 mt7530_port_fdb_del(struct dsa_switch *ds, int port, 1214 const unsigned char *addr, u16 vid) 1215 { 1216 struct mt7530_priv *priv = ds->priv; 1217 int ret; 1218 u8 port_mask = BIT(port); 1219 1220 mutex_lock(&priv->reg_mutex); 1221 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_EMP); 1222 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL); 1223 mutex_unlock(&priv->reg_mutex); 1224 1225 return ret; 1226 } 1227 1228 static int 1229 mt7530_port_fdb_dump(struct dsa_switch *ds, int port, 1230 dsa_fdb_dump_cb_t *cb, void *data) 1231 { 1232 struct mt7530_priv *priv = ds->priv; 1233 struct mt7530_fdb _fdb = { 0 }; 1234 int cnt = MT7530_NUM_FDB_RECORDS; 1235 int ret = 0; 1236 u32 rsp = 0; 1237 1238 mutex_lock(&priv->reg_mutex); 1239 1240 ret = mt7530_fdb_cmd(priv, MT7530_FDB_START, &rsp); 1241 if (ret < 0) 1242 goto err; 1243 1244 do { 1245 if (rsp & ATC_SRCH_HIT) { 1246 mt7530_fdb_read(priv, &_fdb); 1247 if (_fdb.port_mask & BIT(port)) { 1248 ret = cb(_fdb.mac, _fdb.vid, _fdb.noarp, 1249 data); 1250 if (ret < 0) 1251 break; 1252 } 1253 } 1254 } while (--cnt && 1255 !(rsp & ATC_SRCH_END) && 1256 !mt7530_fdb_cmd(priv, MT7530_FDB_NEXT, &rsp)); 1257 err: 1258 mutex_unlock(&priv->reg_mutex); 1259 1260 return 0; 1261 } 1262 1263 static int 1264 mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid) 1265 { 1266 struct mt7530_dummy_poll p; 1267 u32 val; 1268 int ret; 1269 1270 val = VTCR_BUSY | VTCR_FUNC(cmd) | vid; 1271 mt7530_write(priv, MT7530_VTCR, val); 1272 1273 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_VTCR); 1274 ret = readx_poll_timeout(_mt7530_read, &p, val, 1275 !(val & VTCR_BUSY), 20, 20000); 1276 if (ret < 0) { 1277 dev_err(priv->dev, "poll timeout\n"); 1278 return ret; 1279 } 1280 1281 val = mt7530_read(priv, MT7530_VTCR); 1282 if (val & VTCR_INVALID) { 1283 dev_err(priv->dev, "read VTCR invalid\n"); 1284 return -EINVAL; 1285 } 1286 1287 return 0; 1288 } 1289 1290 static int 1291 mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, 1292 bool vlan_filtering) 1293 { 1294 if (vlan_filtering) { 1295 /* The port is being kept as VLAN-unaware port when bridge is 1296 * set up with vlan_filtering not being set, Otherwise, the 1297 * port and the corresponding CPU port is required the setup 1298 * for becoming a VLAN-aware port. 1299 */ 1300 mt7530_port_set_vlan_aware(ds, port); 1301 mt7530_port_set_vlan_aware(ds, MT7530_CPU_PORT); 1302 } else { 1303 mt7530_port_set_vlan_unaware(ds, port); 1304 } 1305 1306 return 0; 1307 } 1308 1309 static int 1310 mt7530_port_vlan_prepare(struct dsa_switch *ds, int port, 1311 const struct switchdev_obj_port_vlan *vlan) 1312 { 1313 /* nothing needed */ 1314 1315 return 0; 1316 } 1317 1318 static void 1319 mt7530_hw_vlan_add(struct mt7530_priv *priv, 1320 struct mt7530_hw_vlan_entry *entry) 1321 { 1322 u8 new_members; 1323 u32 val; 1324 1325 new_members = entry->old_members | BIT(entry->port) | 1326 BIT(MT7530_CPU_PORT); 1327 1328 /* Validate the entry with independent learning, create egress tag per 1329 * VLAN and joining the port as one of the port members. 1330 */ 1331 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | VLAN_VALID; 1332 mt7530_write(priv, MT7530_VAWD1, val); 1333 1334 /* Decide whether adding tag or not for those outgoing packets from the 1335 * port inside the VLAN. 1336 */ 1337 val = entry->untagged ? MT7530_VLAN_EGRESS_UNTAG : 1338 MT7530_VLAN_EGRESS_TAG; 1339 mt7530_rmw(priv, MT7530_VAWD2, 1340 ETAG_CTRL_P_MASK(entry->port), 1341 ETAG_CTRL_P(entry->port, val)); 1342 1343 /* CPU port is always taken as a tagged port for serving more than one 1344 * VLANs across and also being applied with egress type stack mode for 1345 * that VLAN tags would be appended after hardware special tag used as 1346 * DSA tag. 1347 */ 1348 mt7530_rmw(priv, MT7530_VAWD2, 1349 ETAG_CTRL_P_MASK(MT7530_CPU_PORT), 1350 ETAG_CTRL_P(MT7530_CPU_PORT, 1351 MT7530_VLAN_EGRESS_STACK)); 1352 } 1353 1354 static void 1355 mt7530_hw_vlan_del(struct mt7530_priv *priv, 1356 struct mt7530_hw_vlan_entry *entry) 1357 { 1358 u8 new_members; 1359 u32 val; 1360 1361 new_members = entry->old_members & ~BIT(entry->port); 1362 1363 val = mt7530_read(priv, MT7530_VAWD1); 1364 if (!(val & VLAN_VALID)) { 1365 dev_err(priv->dev, 1366 "Cannot be deleted due to invalid entry\n"); 1367 return; 1368 } 1369 1370 /* If certain member apart from CPU port is still alive in the VLAN, 1371 * the entry would be kept valid. Otherwise, the entry is got to be 1372 * disabled. 1373 */ 1374 if (new_members && new_members != BIT(MT7530_CPU_PORT)) { 1375 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | 1376 VLAN_VALID; 1377 mt7530_write(priv, MT7530_VAWD1, val); 1378 } else { 1379 mt7530_write(priv, MT7530_VAWD1, 0); 1380 mt7530_write(priv, MT7530_VAWD2, 0); 1381 } 1382 } 1383 1384 static void 1385 mt7530_hw_vlan_update(struct mt7530_priv *priv, u16 vid, 1386 struct mt7530_hw_vlan_entry *entry, 1387 mt7530_vlan_op vlan_op) 1388 { 1389 u32 val; 1390 1391 /* Fetch entry */ 1392 mt7530_vlan_cmd(priv, MT7530_VTCR_RD_VID, vid); 1393 1394 val = mt7530_read(priv, MT7530_VAWD1); 1395 1396 entry->old_members = (val >> PORT_MEM_SHFT) & PORT_MEM_MASK; 1397 1398 /* Manipulate entry */ 1399 vlan_op(priv, entry); 1400 1401 /* Flush result to hardware */ 1402 mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, vid); 1403 } 1404 1405 static void 1406 mt7530_port_vlan_add(struct dsa_switch *ds, int port, 1407 const struct switchdev_obj_port_vlan *vlan) 1408 { 1409 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; 1410 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; 1411 struct mt7530_hw_vlan_entry new_entry; 1412 struct mt7530_priv *priv = ds->priv; 1413 u16 vid; 1414 1415 mutex_lock(&priv->reg_mutex); 1416 1417 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { 1418 mt7530_hw_vlan_entry_init(&new_entry, port, untagged); 1419 mt7530_hw_vlan_update(priv, vid, &new_entry, 1420 mt7530_hw_vlan_add); 1421 } 1422 1423 if (pvid) { 1424 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK, 1425 G0_PORT_VID(vlan->vid_end)); 1426 priv->ports[port].pvid = vlan->vid_end; 1427 } 1428 1429 mutex_unlock(&priv->reg_mutex); 1430 } 1431 1432 static int 1433 mt7530_port_vlan_del(struct dsa_switch *ds, int port, 1434 const struct switchdev_obj_port_vlan *vlan) 1435 { 1436 struct mt7530_hw_vlan_entry target_entry; 1437 struct mt7530_priv *priv = ds->priv; 1438 u16 vid, pvid; 1439 1440 mutex_lock(&priv->reg_mutex); 1441 1442 pvid = priv->ports[port].pvid; 1443 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { 1444 mt7530_hw_vlan_entry_init(&target_entry, port, 0); 1445 mt7530_hw_vlan_update(priv, vid, &target_entry, 1446 mt7530_hw_vlan_del); 1447 1448 /* PVID is being restored to the default whenever the PVID port 1449 * is being removed from the VLAN. 1450 */ 1451 if (pvid == vid) 1452 pvid = G0_PORT_VID_DEF; 1453 } 1454 1455 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK, pvid); 1456 priv->ports[port].pvid = pvid; 1457 1458 mutex_unlock(&priv->reg_mutex); 1459 1460 return 0; 1461 } 1462 1463 static int mt753x_mirror_port_get(unsigned int id, u32 val) 1464 { 1465 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_GET(val) : 1466 MIRROR_PORT(val); 1467 } 1468 1469 static int mt753x_mirror_port_set(unsigned int id, u32 val) 1470 { 1471 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_SET(val) : 1472 MIRROR_PORT(val); 1473 } 1474 1475 static int mt753x_port_mirror_add(struct dsa_switch *ds, int port, 1476 struct dsa_mall_mirror_tc_entry *mirror, 1477 bool ingress) 1478 { 1479 struct mt7530_priv *priv = ds->priv; 1480 int monitor_port; 1481 u32 val; 1482 1483 /* Check for existent entry */ 1484 if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port)) 1485 return -EEXIST; 1486 1487 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id)); 1488 1489 /* MT7530 only supports one monitor port */ 1490 monitor_port = mt753x_mirror_port_get(priv->id, val); 1491 if (val & MT753X_MIRROR_EN(priv->id) && 1492 monitor_port != mirror->to_local_port) 1493 return -EEXIST; 1494 1495 val |= MT753X_MIRROR_EN(priv->id); 1496 val &= ~MT753X_MIRROR_MASK(priv->id); 1497 val |= mt753x_mirror_port_set(priv->id, mirror->to_local_port); 1498 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val); 1499 1500 val = mt7530_read(priv, MT7530_PCR_P(port)); 1501 if (ingress) { 1502 val |= PORT_RX_MIR; 1503 priv->mirror_rx |= BIT(port); 1504 } else { 1505 val |= PORT_TX_MIR; 1506 priv->mirror_tx |= BIT(port); 1507 } 1508 mt7530_write(priv, MT7530_PCR_P(port), val); 1509 1510 return 0; 1511 } 1512 1513 static void mt753x_port_mirror_del(struct dsa_switch *ds, int port, 1514 struct dsa_mall_mirror_tc_entry *mirror) 1515 { 1516 struct mt7530_priv *priv = ds->priv; 1517 u32 val; 1518 1519 val = mt7530_read(priv, MT7530_PCR_P(port)); 1520 if (mirror->ingress) { 1521 val &= ~PORT_RX_MIR; 1522 priv->mirror_rx &= ~BIT(port); 1523 } else { 1524 val &= ~PORT_TX_MIR; 1525 priv->mirror_tx &= ~BIT(port); 1526 } 1527 mt7530_write(priv, MT7530_PCR_P(port), val); 1528 1529 if (!priv->mirror_rx && !priv->mirror_tx) { 1530 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id)); 1531 val &= ~MT753X_MIRROR_EN(priv->id); 1532 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val); 1533 } 1534 } 1535 1536 static enum dsa_tag_protocol 1537 mtk_get_tag_protocol(struct dsa_switch *ds, int port, 1538 enum dsa_tag_protocol mp) 1539 { 1540 struct mt7530_priv *priv = ds->priv; 1541 1542 if (port != MT7530_CPU_PORT) { 1543 dev_warn(priv->dev, 1544 "port not matched with tagging CPU port\n"); 1545 return DSA_TAG_PROTO_NONE; 1546 } else { 1547 return DSA_TAG_PROTO_MTK; 1548 } 1549 } 1550 1551 static int 1552 mt7530_setup(struct dsa_switch *ds) 1553 { 1554 struct mt7530_priv *priv = ds->priv; 1555 struct device_node *phy_node; 1556 struct device_node *mac_np; 1557 struct mt7530_dummy_poll p; 1558 phy_interface_t interface; 1559 struct device_node *dn; 1560 u32 id, val; 1561 int ret, i; 1562 1563 /* The parent node of master netdev which holds the common system 1564 * controller also is the container for two GMACs nodes representing 1565 * as two netdev instances. 1566 */ 1567 dn = dsa_to_port(ds, MT7530_CPU_PORT)->master->dev.of_node->parent; 1568 ds->configure_vlan_while_not_filtering = true; 1569 1570 if (priv->id == ID_MT7530) { 1571 regulator_set_voltage(priv->core_pwr, 1000000, 1000000); 1572 ret = regulator_enable(priv->core_pwr); 1573 if (ret < 0) { 1574 dev_err(priv->dev, 1575 "Failed to enable core power: %d\n", ret); 1576 return ret; 1577 } 1578 1579 regulator_set_voltage(priv->io_pwr, 3300000, 3300000); 1580 ret = regulator_enable(priv->io_pwr); 1581 if (ret < 0) { 1582 dev_err(priv->dev, "Failed to enable io pwr: %d\n", 1583 ret); 1584 return ret; 1585 } 1586 } 1587 1588 /* Reset whole chip through gpio pin or memory-mapped registers for 1589 * different type of hardware 1590 */ 1591 if (priv->mcm) { 1592 reset_control_assert(priv->rstc); 1593 usleep_range(1000, 1100); 1594 reset_control_deassert(priv->rstc); 1595 } else { 1596 gpiod_set_value_cansleep(priv->reset, 0); 1597 usleep_range(1000, 1100); 1598 gpiod_set_value_cansleep(priv->reset, 1); 1599 } 1600 1601 /* Waiting for MT7530 got to stable */ 1602 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP); 1603 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0, 1604 20, 1000000); 1605 if (ret < 0) { 1606 dev_err(priv->dev, "reset timeout\n"); 1607 return ret; 1608 } 1609 1610 id = mt7530_read(priv, MT7530_CREV); 1611 id >>= CHIP_NAME_SHIFT; 1612 if (id != MT7530_ID) { 1613 dev_err(priv->dev, "chip %x can't be supported\n", id); 1614 return -ENODEV; 1615 } 1616 1617 /* Reset the switch through internal reset */ 1618 mt7530_write(priv, MT7530_SYS_CTRL, 1619 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | 1620 SYS_CTRL_REG_RST); 1621 1622 /* Enable Port 6 only; P5 as GMAC5 which currently is not supported */ 1623 val = mt7530_read(priv, MT7530_MHWTRAP); 1624 val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS; 1625 val |= MHWTRAP_MANUAL; 1626 mt7530_write(priv, MT7530_MHWTRAP, val); 1627 1628 priv->p6_interface = PHY_INTERFACE_MODE_NA; 1629 1630 /* Enable and reset MIB counters */ 1631 mt7530_mib_reset(ds); 1632 1633 for (i = 0; i < MT7530_NUM_PORTS; i++) { 1634 /* Disable forwarding by default on all ports */ 1635 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK, 1636 PCR_MATRIX_CLR); 1637 1638 if (dsa_is_cpu_port(ds, i)) { 1639 ret = mt753x_cpu_port_enable(ds, i); 1640 if (ret) 1641 return ret; 1642 } else 1643 mt7530_port_disable(ds, i); 1644 1645 /* Enable consistent egress tag */ 1646 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK, 1647 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT)); 1648 } 1649 1650 /* Setup port 5 */ 1651 priv->p5_intf_sel = P5_DISABLED; 1652 interface = PHY_INTERFACE_MODE_NA; 1653 1654 if (!dsa_is_unused_port(ds, 5)) { 1655 priv->p5_intf_sel = P5_INTF_SEL_GMAC5; 1656 ret = of_get_phy_mode(dsa_to_port(ds, 5)->dn, &interface); 1657 if (ret && ret != -ENODEV) 1658 return ret; 1659 } else { 1660 /* Scan the ethernet nodes. look for GMAC1, lookup used phy */ 1661 for_each_child_of_node(dn, mac_np) { 1662 if (!of_device_is_compatible(mac_np, 1663 "mediatek,eth-mac")) 1664 continue; 1665 1666 ret = of_property_read_u32(mac_np, "reg", &id); 1667 if (ret < 0 || id != 1) 1668 continue; 1669 1670 phy_node = of_parse_phandle(mac_np, "phy-handle", 0); 1671 if (!phy_node) 1672 continue; 1673 1674 if (phy_node->parent == priv->dev->of_node->parent) { 1675 ret = of_get_phy_mode(mac_np, &interface); 1676 if (ret && ret != -ENODEV) { 1677 of_node_put(mac_np); 1678 return ret; 1679 } 1680 id = of_mdio_parse_addr(ds->dev, phy_node); 1681 if (id == 0) 1682 priv->p5_intf_sel = P5_INTF_SEL_PHY_P0; 1683 if (id == 4) 1684 priv->p5_intf_sel = P5_INTF_SEL_PHY_P4; 1685 } 1686 of_node_put(mac_np); 1687 of_node_put(phy_node); 1688 break; 1689 } 1690 } 1691 1692 mt7530_setup_port5(ds, interface); 1693 1694 /* Flush the FDB table */ 1695 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL); 1696 if (ret < 0) 1697 return ret; 1698 1699 return 0; 1700 } 1701 1702 static int 1703 mt7531_setup(struct dsa_switch *ds) 1704 { 1705 struct mt7530_priv *priv = ds->priv; 1706 struct mt7530_dummy_poll p; 1707 u32 val, id; 1708 int ret, i; 1709 1710 /* Reset whole chip through gpio pin or memory-mapped registers for 1711 * different type of hardware 1712 */ 1713 if (priv->mcm) { 1714 reset_control_assert(priv->rstc); 1715 usleep_range(1000, 1100); 1716 reset_control_deassert(priv->rstc); 1717 } else { 1718 gpiod_set_value_cansleep(priv->reset, 0); 1719 usleep_range(1000, 1100); 1720 gpiod_set_value_cansleep(priv->reset, 1); 1721 } 1722 1723 /* Waiting for MT7530 got to stable */ 1724 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP); 1725 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0, 1726 20, 1000000); 1727 if (ret < 0) { 1728 dev_err(priv->dev, "reset timeout\n"); 1729 return ret; 1730 } 1731 1732 id = mt7530_read(priv, MT7531_CREV); 1733 id >>= CHIP_NAME_SHIFT; 1734 1735 if (id != MT7531_ID) { 1736 dev_err(priv->dev, "chip %x can't be supported\n", id); 1737 return -ENODEV; 1738 } 1739 1740 /* Reset the switch through internal reset */ 1741 mt7530_write(priv, MT7530_SYS_CTRL, 1742 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | 1743 SYS_CTRL_REG_RST); 1744 1745 if (mt7531_dual_sgmii_supported(priv)) { 1746 priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII; 1747 1748 /* Let ds->slave_mii_bus be able to access external phy. */ 1749 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK, 1750 MT7531_EXT_P_MDC_11); 1751 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK, 1752 MT7531_EXT_P_MDIO_12); 1753 } else { 1754 priv->p5_intf_sel = P5_INTF_SEL_GMAC5; 1755 } 1756 dev_dbg(ds->dev, "P5 support %s interface\n", 1757 p5_intf_modes(priv->p5_intf_sel)); 1758 1759 mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK, 1760 MT7531_GPIO0_INTERRUPT); 1761 1762 /* Let phylink decide the interface later. */ 1763 priv->p5_interface = PHY_INTERFACE_MODE_NA; 1764 priv->p6_interface = PHY_INTERFACE_MODE_NA; 1765 1766 /* Enable PHY core PLL, since phy_device has not yet been created 1767 * provided for phy_[read,write]_mmd_indirect is called, we provide 1768 * our own mt7531_ind_mmd_phy_[read,write] to complete this 1769 * function. 1770 */ 1771 val = mt7531_ind_c45_phy_read(priv, MT753X_CTRL_PHY_ADDR, 1772 MDIO_MMD_VEND2, CORE_PLL_GROUP4); 1773 val |= MT7531_PHY_PLL_BYPASS_MODE; 1774 val &= ~MT7531_PHY_PLL_OFF; 1775 mt7531_ind_c45_phy_write(priv, MT753X_CTRL_PHY_ADDR, MDIO_MMD_VEND2, 1776 CORE_PLL_GROUP4, val); 1777 1778 /* BPDU to CPU port */ 1779 mt7530_rmw(priv, MT7531_CFC, MT7531_CPU_PMAP_MASK, 1780 BIT(MT7530_CPU_PORT)); 1781 mt7530_rmw(priv, MT753X_BPC, MT753X_BPDU_PORT_FW_MASK, 1782 MT753X_BPDU_CPU_ONLY); 1783 1784 /* Enable and reset MIB counters */ 1785 mt7530_mib_reset(ds); 1786 1787 for (i = 0; i < MT7530_NUM_PORTS; i++) { 1788 /* Disable forwarding by default on all ports */ 1789 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK, 1790 PCR_MATRIX_CLR); 1791 1792 mt7530_set(priv, MT7531_DBG_CNT(i), MT7531_DIS_CLR); 1793 1794 if (dsa_is_cpu_port(ds, i)) { 1795 ret = mt753x_cpu_port_enable(ds, i); 1796 if (ret) 1797 return ret; 1798 } else 1799 mt7530_port_disable(ds, i); 1800 1801 /* Enable consistent egress tag */ 1802 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK, 1803 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT)); 1804 } 1805 1806 ds->configure_vlan_while_not_filtering = true; 1807 1808 /* Flush the FDB table */ 1809 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL); 1810 if (ret < 0) 1811 return ret; 1812 1813 return 0; 1814 } 1815 1816 static bool 1817 mt7530_phy_mode_supported(struct dsa_switch *ds, int port, 1818 const struct phylink_link_state *state) 1819 { 1820 struct mt7530_priv *priv = ds->priv; 1821 1822 switch (port) { 1823 case 0 ... 4: /* Internal phy */ 1824 if (state->interface != PHY_INTERFACE_MODE_GMII) 1825 return false; 1826 break; 1827 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */ 1828 if (!phy_interface_mode_is_rgmii(state->interface) && 1829 state->interface != PHY_INTERFACE_MODE_MII && 1830 state->interface != PHY_INTERFACE_MODE_GMII) 1831 return false; 1832 break; 1833 case 6: /* 1st cpu port */ 1834 if (state->interface != PHY_INTERFACE_MODE_RGMII && 1835 state->interface != PHY_INTERFACE_MODE_TRGMII) 1836 return false; 1837 break; 1838 default: 1839 dev_err(priv->dev, "%s: unsupported port: %i\n", __func__, 1840 port); 1841 return false; 1842 } 1843 1844 return true; 1845 } 1846 1847 static bool mt7531_is_rgmii_port(struct mt7530_priv *priv, u32 port) 1848 { 1849 return (port == 5) && (priv->p5_intf_sel != P5_INTF_SEL_GMAC5_SGMII); 1850 } 1851 1852 static bool 1853 mt7531_phy_mode_supported(struct dsa_switch *ds, int port, 1854 const struct phylink_link_state *state) 1855 { 1856 struct mt7530_priv *priv = ds->priv; 1857 1858 switch (port) { 1859 case 0 ... 4: /* Internal phy */ 1860 if (state->interface != PHY_INTERFACE_MODE_GMII) 1861 return false; 1862 break; 1863 case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */ 1864 if (mt7531_is_rgmii_port(priv, port)) 1865 return phy_interface_mode_is_rgmii(state->interface); 1866 fallthrough; 1867 case 6: /* 1st cpu port supports sgmii/8023z only */ 1868 if (state->interface != PHY_INTERFACE_MODE_SGMII && 1869 !phy_interface_mode_is_8023z(state->interface)) 1870 return false; 1871 break; 1872 default: 1873 dev_err(priv->dev, "%s: unsupported port: %i\n", __func__, 1874 port); 1875 return false; 1876 } 1877 1878 return true; 1879 } 1880 1881 static bool 1882 mt753x_phy_mode_supported(struct dsa_switch *ds, int port, 1883 const struct phylink_link_state *state) 1884 { 1885 struct mt7530_priv *priv = ds->priv; 1886 1887 return priv->info->phy_mode_supported(ds, port, state); 1888 } 1889 1890 static int 1891 mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state) 1892 { 1893 struct mt7530_priv *priv = ds->priv; 1894 1895 return priv->info->pad_setup(ds, state->interface); 1896 } 1897 1898 static int 1899 mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode, 1900 phy_interface_t interface) 1901 { 1902 struct mt7530_priv *priv = ds->priv; 1903 1904 /* Only need to setup port5. */ 1905 if (port != 5) 1906 return 0; 1907 1908 mt7530_setup_port5(priv->ds, interface); 1909 1910 return 0; 1911 } 1912 1913 static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port, 1914 phy_interface_t interface, 1915 struct phy_device *phydev) 1916 { 1917 u32 val; 1918 1919 if (!mt7531_is_rgmii_port(priv, port)) { 1920 dev_err(priv->dev, "RGMII mode is not available for port %d\n", 1921 port); 1922 return -EINVAL; 1923 } 1924 1925 val = mt7530_read(priv, MT7531_CLKGEN_CTRL); 1926 val |= GP_CLK_EN; 1927 val &= ~GP_MODE_MASK; 1928 val |= GP_MODE(MT7531_GP_MODE_RGMII); 1929 val &= ~CLK_SKEW_IN_MASK; 1930 val |= CLK_SKEW_IN(MT7531_CLK_SKEW_NO_CHG); 1931 val &= ~CLK_SKEW_OUT_MASK; 1932 val |= CLK_SKEW_OUT(MT7531_CLK_SKEW_NO_CHG); 1933 val |= TXCLK_NO_REVERSE | RXCLK_NO_DELAY; 1934 1935 /* Do not adjust rgmii delay when vendor phy driver presents. */ 1936 if (!phydev || phy_driver_is_genphy(phydev)) { 1937 val &= ~(TXCLK_NO_REVERSE | RXCLK_NO_DELAY); 1938 switch (interface) { 1939 case PHY_INTERFACE_MODE_RGMII: 1940 val |= TXCLK_NO_REVERSE; 1941 val |= RXCLK_NO_DELAY; 1942 break; 1943 case PHY_INTERFACE_MODE_RGMII_RXID: 1944 val |= TXCLK_NO_REVERSE; 1945 break; 1946 case PHY_INTERFACE_MODE_RGMII_TXID: 1947 val |= RXCLK_NO_DELAY; 1948 break; 1949 case PHY_INTERFACE_MODE_RGMII_ID: 1950 break; 1951 default: 1952 return -EINVAL; 1953 } 1954 } 1955 mt7530_write(priv, MT7531_CLKGEN_CTRL, val); 1956 1957 return 0; 1958 } 1959 1960 static void mt7531_sgmii_validate(struct mt7530_priv *priv, int port, 1961 unsigned long *supported) 1962 { 1963 /* Port5 supports ethier RGMII or SGMII. 1964 * Port6 supports SGMII only. 1965 */ 1966 switch (port) { 1967 case 5: 1968 if (mt7531_is_rgmii_port(priv, port)) 1969 break; 1970 fallthrough; 1971 case 6: 1972 phylink_set(supported, 1000baseX_Full); 1973 phylink_set(supported, 2500baseX_Full); 1974 phylink_set(supported, 2500baseT_Full); 1975 } 1976 } 1977 1978 static void 1979 mt7531_sgmii_link_up_force(struct dsa_switch *ds, int port, 1980 unsigned int mode, phy_interface_t interface, 1981 int speed, int duplex) 1982 { 1983 struct mt7530_priv *priv = ds->priv; 1984 unsigned int val; 1985 1986 /* For adjusting speed and duplex of SGMII force mode. */ 1987 if (interface != PHY_INTERFACE_MODE_SGMII || 1988 phylink_autoneg_inband(mode)) 1989 return; 1990 1991 /* SGMII force mode setting */ 1992 val = mt7530_read(priv, MT7531_SGMII_MODE(port)); 1993 val &= ~MT7531_SGMII_IF_MODE_MASK; 1994 1995 switch (speed) { 1996 case SPEED_10: 1997 val |= MT7531_SGMII_FORCE_SPEED_10; 1998 break; 1999 case SPEED_100: 2000 val |= MT7531_SGMII_FORCE_SPEED_100; 2001 break; 2002 case SPEED_1000: 2003 val |= MT7531_SGMII_FORCE_SPEED_1000; 2004 break; 2005 } 2006 2007 /* MT7531 SGMII 1G force mode can only work in full duplex mode, 2008 * no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not. 2009 */ 2010 if ((speed == SPEED_10 || speed == SPEED_100) && 2011 duplex != DUPLEX_FULL) 2012 val |= MT7531_SGMII_FORCE_HALF_DUPLEX; 2013 2014 mt7530_write(priv, MT7531_SGMII_MODE(port), val); 2015 } 2016 2017 static bool mt753x_is_mac_port(u32 port) 2018 { 2019 return (port == 5 || port == 6); 2020 } 2021 2022 static int mt7531_sgmii_setup_mode_force(struct mt7530_priv *priv, u32 port, 2023 phy_interface_t interface) 2024 { 2025 u32 val; 2026 2027 if (!mt753x_is_mac_port(port)) 2028 return -EINVAL; 2029 2030 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 2031 MT7531_SGMII_PHYA_PWD); 2032 2033 val = mt7530_read(priv, MT7531_PHYA_CTRL_SIGNAL3(port)); 2034 val &= ~MT7531_RG_TPHY_SPEED_MASK; 2035 /* Setup 2.5 times faster clock for 2.5Gbps data speeds with 10B/8B 2036 * encoding. 2037 */ 2038 val |= (interface == PHY_INTERFACE_MODE_2500BASEX) ? 2039 MT7531_RG_TPHY_SPEED_3_125G : MT7531_RG_TPHY_SPEED_1_25G; 2040 mt7530_write(priv, MT7531_PHYA_CTRL_SIGNAL3(port), val); 2041 2042 mt7530_clear(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE); 2043 2044 /* MT7531 SGMII 1G and 2.5G force mode can only work in full duplex 2045 * mode, no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not. 2046 */ 2047 mt7530_rmw(priv, MT7531_SGMII_MODE(port), 2048 MT7531_SGMII_IF_MODE_MASK | MT7531_SGMII_REMOTE_FAULT_DIS, 2049 MT7531_SGMII_FORCE_SPEED_1000); 2050 2051 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0); 2052 2053 return 0; 2054 } 2055 2056 static int mt7531_sgmii_setup_mode_an(struct mt7530_priv *priv, int port, 2057 phy_interface_t interface) 2058 { 2059 if (!mt753x_is_mac_port(port)) 2060 return -EINVAL; 2061 2062 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 2063 MT7531_SGMII_PHYA_PWD); 2064 2065 mt7530_rmw(priv, MT7531_PHYA_CTRL_SIGNAL3(port), 2066 MT7531_RG_TPHY_SPEED_MASK, MT7531_RG_TPHY_SPEED_1_25G); 2067 2068 mt7530_set(priv, MT7531_SGMII_MODE(port), 2069 MT7531_SGMII_REMOTE_FAULT_DIS | 2070 MT7531_SGMII_SPEED_DUPLEX_AN); 2071 2072 mt7530_rmw(priv, MT7531_PCS_SPEED_ABILITY(port), 2073 MT7531_SGMII_TX_CONFIG_MASK, 1); 2074 2075 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE); 2076 2077 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_RESTART); 2078 2079 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0); 2080 2081 return 0; 2082 } 2083 2084 static void mt7531_sgmii_restart_an(struct dsa_switch *ds, int port) 2085 { 2086 struct mt7530_priv *priv = ds->priv; 2087 u32 val; 2088 2089 /* Only restart AN when AN is enabled */ 2090 val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port)); 2091 if (val & MT7531_SGMII_AN_ENABLE) { 2092 val |= MT7531_SGMII_AN_RESTART; 2093 mt7530_write(priv, MT7531_PCS_CONTROL_1(port), val); 2094 } 2095 } 2096 2097 static int 2098 mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, 2099 phy_interface_t interface) 2100 { 2101 struct mt7530_priv *priv = ds->priv; 2102 struct phy_device *phydev; 2103 struct dsa_port *dp; 2104 2105 if (!mt753x_is_mac_port(port)) { 2106 dev_err(priv->dev, "port %d is not a MAC port\n", port); 2107 return -EINVAL; 2108 } 2109 2110 switch (interface) { 2111 case PHY_INTERFACE_MODE_RGMII: 2112 case PHY_INTERFACE_MODE_RGMII_ID: 2113 case PHY_INTERFACE_MODE_RGMII_RXID: 2114 case PHY_INTERFACE_MODE_RGMII_TXID: 2115 dp = dsa_to_port(ds, port); 2116 phydev = dp->slave->phydev; 2117 return mt7531_rgmii_setup(priv, port, interface, phydev); 2118 case PHY_INTERFACE_MODE_SGMII: 2119 return mt7531_sgmii_setup_mode_an(priv, port, interface); 2120 case PHY_INTERFACE_MODE_NA: 2121 case PHY_INTERFACE_MODE_1000BASEX: 2122 case PHY_INTERFACE_MODE_2500BASEX: 2123 if (phylink_autoneg_inband(mode)) 2124 return -EINVAL; 2125 2126 return mt7531_sgmii_setup_mode_force(priv, port, interface); 2127 default: 2128 return -EINVAL; 2129 } 2130 2131 return -EINVAL; 2132 } 2133 2134 static int 2135 mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode, 2136 const struct phylink_link_state *state) 2137 { 2138 struct mt7530_priv *priv = ds->priv; 2139 2140 return priv->info->mac_port_config(ds, port, mode, state->interface); 2141 } 2142 2143 static void 2144 mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, 2145 const struct phylink_link_state *state) 2146 { 2147 struct mt7530_priv *priv = ds->priv; 2148 u32 mcr_cur, mcr_new; 2149 2150 if (!mt753x_phy_mode_supported(ds, port, state)) 2151 goto unsupported; 2152 2153 switch (port) { 2154 case 0 ... 4: /* Internal phy */ 2155 if (state->interface != PHY_INTERFACE_MODE_GMII) 2156 goto unsupported; 2157 break; 2158 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */ 2159 if (priv->p5_interface == state->interface) 2160 break; 2161 2162 if (mt753x_mac_config(ds, port, mode, state) < 0) 2163 goto unsupported; 2164 2165 if (priv->p5_intf_sel != P5_DISABLED) 2166 priv->p5_interface = state->interface; 2167 break; 2168 case 6: /* 1st cpu port */ 2169 if (priv->p6_interface == state->interface) 2170 break; 2171 2172 mt753x_pad_setup(ds, state); 2173 2174 if (mt753x_mac_config(ds, port, mode, state) < 0) 2175 goto unsupported; 2176 2177 priv->p6_interface = state->interface; 2178 break; 2179 default: 2180 unsupported: 2181 dev_err(ds->dev, "%s: unsupported %s port: %i\n", 2182 __func__, phy_modes(state->interface), port); 2183 return; 2184 } 2185 2186 if (phylink_autoneg_inband(mode) && 2187 state->interface != PHY_INTERFACE_MODE_SGMII) { 2188 dev_err(ds->dev, "%s: in-band negotiation unsupported\n", 2189 __func__); 2190 return; 2191 } 2192 2193 mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port)); 2194 mcr_new = mcr_cur; 2195 mcr_new &= ~PMCR_LINK_SETTINGS_MASK; 2196 mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN | 2197 PMCR_BACKPR_EN | PMCR_FORCE_MODE_ID(priv->id); 2198 2199 /* Are we connected to external phy */ 2200 if (port == 5 && dsa_is_user_port(ds, 5)) 2201 mcr_new |= PMCR_EXT_PHY; 2202 2203 if (mcr_new != mcr_cur) 2204 mt7530_write(priv, MT7530_PMCR_P(port), mcr_new); 2205 } 2206 2207 static void 2208 mt753x_phylink_mac_an_restart(struct dsa_switch *ds, int port) 2209 { 2210 struct mt7530_priv *priv = ds->priv; 2211 2212 if (!priv->info->mac_pcs_an_restart) 2213 return; 2214 2215 priv->info->mac_pcs_an_restart(ds, port); 2216 } 2217 2218 static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port, 2219 unsigned int mode, 2220 phy_interface_t interface) 2221 { 2222 struct mt7530_priv *priv = ds->priv; 2223 2224 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); 2225 } 2226 2227 static void mt753x_mac_pcs_link_up(struct dsa_switch *ds, int port, 2228 unsigned int mode, phy_interface_t interface, 2229 int speed, int duplex) 2230 { 2231 struct mt7530_priv *priv = ds->priv; 2232 2233 if (!priv->info->mac_pcs_link_up) 2234 return; 2235 2236 priv->info->mac_pcs_link_up(ds, port, mode, interface, speed, duplex); 2237 } 2238 2239 static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port, 2240 unsigned int mode, 2241 phy_interface_t interface, 2242 struct phy_device *phydev, 2243 int speed, int duplex, 2244 bool tx_pause, bool rx_pause) 2245 { 2246 struct mt7530_priv *priv = ds->priv; 2247 u32 mcr; 2248 2249 mt753x_mac_pcs_link_up(ds, port, mode, interface, speed, duplex); 2250 2251 mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK; 2252 2253 /* MT753x MAC works in 1G full duplex mode for all up-clocked 2254 * variants. 2255 */ 2256 if (interface == PHY_INTERFACE_MODE_TRGMII || 2257 (phy_interface_mode_is_8023z(interface))) { 2258 speed = SPEED_1000; 2259 duplex = DUPLEX_FULL; 2260 } 2261 2262 switch (speed) { 2263 case SPEED_1000: 2264 mcr |= PMCR_FORCE_SPEED_1000; 2265 break; 2266 case SPEED_100: 2267 mcr |= PMCR_FORCE_SPEED_100; 2268 break; 2269 } 2270 if (duplex == DUPLEX_FULL) { 2271 mcr |= PMCR_FORCE_FDX; 2272 if (tx_pause) 2273 mcr |= PMCR_TX_FC_EN; 2274 if (rx_pause) 2275 mcr |= PMCR_RX_FC_EN; 2276 } 2277 2278 mt7530_set(priv, MT7530_PMCR_P(port), mcr); 2279 } 2280 2281 static int 2282 mt7531_cpu_port_config(struct dsa_switch *ds, int port) 2283 { 2284 struct mt7530_priv *priv = ds->priv; 2285 phy_interface_t interface; 2286 int speed; 2287 int ret; 2288 2289 switch (port) { 2290 case 5: 2291 if (mt7531_is_rgmii_port(priv, port)) 2292 interface = PHY_INTERFACE_MODE_RGMII; 2293 else 2294 interface = PHY_INTERFACE_MODE_2500BASEX; 2295 2296 priv->p5_interface = interface; 2297 break; 2298 case 6: 2299 interface = PHY_INTERFACE_MODE_2500BASEX; 2300 2301 mt7531_pad_setup(ds, interface); 2302 2303 priv->p6_interface = interface; 2304 break; 2305 default: 2306 return -EINVAL; 2307 } 2308 2309 if (interface == PHY_INTERFACE_MODE_2500BASEX) 2310 speed = SPEED_2500; 2311 else 2312 speed = SPEED_1000; 2313 2314 ret = mt7531_mac_config(ds, port, MLO_AN_FIXED, interface); 2315 if (ret) 2316 return ret; 2317 mt7530_write(priv, MT7530_PMCR_P(port), 2318 PMCR_CPU_PORT_SETTING(priv->id)); 2319 mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL, 2320 speed, DUPLEX_FULL, true, true); 2321 2322 return 0; 2323 } 2324 2325 static void 2326 mt7530_mac_port_validate(struct dsa_switch *ds, int port, 2327 unsigned long *supported) 2328 { 2329 if (port == 5) 2330 phylink_set(supported, 1000baseX_Full); 2331 } 2332 2333 static void mt7531_mac_port_validate(struct dsa_switch *ds, int port, 2334 unsigned long *supported) 2335 { 2336 struct mt7530_priv *priv = ds->priv; 2337 2338 mt7531_sgmii_validate(priv, port, supported); 2339 } 2340 2341 static void 2342 mt753x_phylink_validate(struct dsa_switch *ds, int port, 2343 unsigned long *supported, 2344 struct phylink_link_state *state) 2345 { 2346 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; 2347 struct mt7530_priv *priv = ds->priv; 2348 2349 if (state->interface != PHY_INTERFACE_MODE_NA && 2350 !mt753x_phy_mode_supported(ds, port, state)) { 2351 linkmode_zero(supported); 2352 return; 2353 } 2354 2355 phylink_set_port_modes(mask); 2356 2357 if (state->interface != PHY_INTERFACE_MODE_TRGMII || 2358 !phy_interface_mode_is_8023z(state->interface)) { 2359 phylink_set(mask, 10baseT_Half); 2360 phylink_set(mask, 10baseT_Full); 2361 phylink_set(mask, 100baseT_Half); 2362 phylink_set(mask, 100baseT_Full); 2363 phylink_set(mask, Autoneg); 2364 } 2365 2366 /* This switch only supports 1G full-duplex. */ 2367 if (state->interface != PHY_INTERFACE_MODE_MII) 2368 phylink_set(mask, 1000baseT_Full); 2369 2370 priv->info->mac_port_validate(ds, port, mask); 2371 2372 phylink_set(mask, Pause); 2373 phylink_set(mask, Asym_Pause); 2374 2375 linkmode_and(supported, supported, mask); 2376 linkmode_and(state->advertising, state->advertising, mask); 2377 2378 /* We can only operate at 2500BaseX or 1000BaseX. If requested 2379 * to advertise both, only report advertising at 2500BaseX. 2380 */ 2381 phylink_helper_basex_speed(state); 2382 } 2383 2384 static int 2385 mt7530_phylink_mac_link_state(struct dsa_switch *ds, int port, 2386 struct phylink_link_state *state) 2387 { 2388 struct mt7530_priv *priv = ds->priv; 2389 u32 pmsr; 2390 2391 if (port < 0 || port >= MT7530_NUM_PORTS) 2392 return -EINVAL; 2393 2394 pmsr = mt7530_read(priv, MT7530_PMSR_P(port)); 2395 2396 state->link = (pmsr & PMSR_LINK); 2397 state->an_complete = state->link; 2398 state->duplex = !!(pmsr & PMSR_DPX); 2399 2400 switch (pmsr & PMSR_SPEED_MASK) { 2401 case PMSR_SPEED_10: 2402 state->speed = SPEED_10; 2403 break; 2404 case PMSR_SPEED_100: 2405 state->speed = SPEED_100; 2406 break; 2407 case PMSR_SPEED_1000: 2408 state->speed = SPEED_1000; 2409 break; 2410 default: 2411 state->speed = SPEED_UNKNOWN; 2412 break; 2413 } 2414 2415 state->pause &= ~(MLO_PAUSE_RX | MLO_PAUSE_TX); 2416 if (pmsr & PMSR_RX_FC) 2417 state->pause |= MLO_PAUSE_RX; 2418 if (pmsr & PMSR_TX_FC) 2419 state->pause |= MLO_PAUSE_TX; 2420 2421 return 1; 2422 } 2423 2424 static int 2425 mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port, 2426 struct phylink_link_state *state) 2427 { 2428 u32 status, val; 2429 u16 config_reg; 2430 2431 status = mt7530_read(priv, MT7531_PCS_CONTROL_1(port)); 2432 state->link = !!(status & MT7531_SGMII_LINK_STATUS); 2433 if (state->interface == PHY_INTERFACE_MODE_SGMII && 2434 (status & MT7531_SGMII_AN_ENABLE)) { 2435 val = mt7530_read(priv, MT7531_PCS_SPEED_ABILITY(port)); 2436 config_reg = val >> 16; 2437 2438 switch (config_reg & LPA_SGMII_SPD_MASK) { 2439 case LPA_SGMII_1000: 2440 state->speed = SPEED_1000; 2441 break; 2442 case LPA_SGMII_100: 2443 state->speed = SPEED_100; 2444 break; 2445 case LPA_SGMII_10: 2446 state->speed = SPEED_10; 2447 break; 2448 default: 2449 dev_err(priv->dev, "invalid sgmii PHY speed\n"); 2450 state->link = false; 2451 return -EINVAL; 2452 } 2453 2454 if (config_reg & LPA_SGMII_FULL_DUPLEX) 2455 state->duplex = DUPLEX_FULL; 2456 else 2457 state->duplex = DUPLEX_HALF; 2458 } 2459 2460 return 0; 2461 } 2462 2463 static int 2464 mt7531_phylink_mac_link_state(struct dsa_switch *ds, int port, 2465 struct phylink_link_state *state) 2466 { 2467 struct mt7530_priv *priv = ds->priv; 2468 2469 if (state->interface == PHY_INTERFACE_MODE_SGMII) 2470 return mt7531_sgmii_pcs_get_state_an(priv, port, state); 2471 2472 return -EOPNOTSUPP; 2473 } 2474 2475 static int 2476 mt753x_phylink_mac_link_state(struct dsa_switch *ds, int port, 2477 struct phylink_link_state *state) 2478 { 2479 struct mt7530_priv *priv = ds->priv; 2480 2481 return priv->info->mac_port_get_state(ds, port, state); 2482 } 2483 2484 static int 2485 mt753x_setup(struct dsa_switch *ds) 2486 { 2487 struct mt7530_priv *priv = ds->priv; 2488 2489 return priv->info->sw_setup(ds); 2490 } 2491 2492 static int 2493 mt753x_phy_read(struct dsa_switch *ds, int port, int regnum) 2494 { 2495 struct mt7530_priv *priv = ds->priv; 2496 2497 return priv->info->phy_read(ds, port, regnum); 2498 } 2499 2500 static int 2501 mt753x_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val) 2502 { 2503 struct mt7530_priv *priv = ds->priv; 2504 2505 return priv->info->phy_write(ds, port, regnum, val); 2506 } 2507 2508 static const struct dsa_switch_ops mt7530_switch_ops = { 2509 .get_tag_protocol = mtk_get_tag_protocol, 2510 .setup = mt753x_setup, 2511 .get_strings = mt7530_get_strings, 2512 .phy_read = mt753x_phy_read, 2513 .phy_write = mt753x_phy_write, 2514 .get_ethtool_stats = mt7530_get_ethtool_stats, 2515 .get_sset_count = mt7530_get_sset_count, 2516 .port_enable = mt7530_port_enable, 2517 .port_disable = mt7530_port_disable, 2518 .port_stp_state_set = mt7530_stp_state_set, 2519 .port_bridge_join = mt7530_port_bridge_join, 2520 .port_bridge_leave = mt7530_port_bridge_leave, 2521 .port_fdb_add = mt7530_port_fdb_add, 2522 .port_fdb_del = mt7530_port_fdb_del, 2523 .port_fdb_dump = mt7530_port_fdb_dump, 2524 .port_vlan_filtering = mt7530_port_vlan_filtering, 2525 .port_vlan_prepare = mt7530_port_vlan_prepare, 2526 .port_vlan_add = mt7530_port_vlan_add, 2527 .port_vlan_del = mt7530_port_vlan_del, 2528 .port_mirror_add = mt753x_port_mirror_add, 2529 .port_mirror_del = mt753x_port_mirror_del, 2530 .phylink_validate = mt753x_phylink_validate, 2531 .phylink_mac_link_state = mt753x_phylink_mac_link_state, 2532 .phylink_mac_config = mt753x_phylink_mac_config, 2533 .phylink_mac_an_restart = mt753x_phylink_mac_an_restart, 2534 .phylink_mac_link_down = mt753x_phylink_mac_link_down, 2535 .phylink_mac_link_up = mt753x_phylink_mac_link_up, 2536 }; 2537 2538 static const struct mt753x_info mt753x_table[] = { 2539 [ID_MT7621] = { 2540 .id = ID_MT7621, 2541 .sw_setup = mt7530_setup, 2542 .phy_read = mt7530_phy_read, 2543 .phy_write = mt7530_phy_write, 2544 .pad_setup = mt7530_pad_clk_setup, 2545 .phy_mode_supported = mt7530_phy_mode_supported, 2546 .mac_port_validate = mt7530_mac_port_validate, 2547 .mac_port_get_state = mt7530_phylink_mac_link_state, 2548 .mac_port_config = mt7530_mac_config, 2549 }, 2550 [ID_MT7530] = { 2551 .id = ID_MT7530, 2552 .sw_setup = mt7530_setup, 2553 .phy_read = mt7530_phy_read, 2554 .phy_write = mt7530_phy_write, 2555 .pad_setup = mt7530_pad_clk_setup, 2556 .phy_mode_supported = mt7530_phy_mode_supported, 2557 .mac_port_validate = mt7530_mac_port_validate, 2558 .mac_port_get_state = mt7530_phylink_mac_link_state, 2559 .mac_port_config = mt7530_mac_config, 2560 }, 2561 [ID_MT7531] = { 2562 .id = ID_MT7531, 2563 .sw_setup = mt7531_setup, 2564 .phy_read = mt7531_ind_phy_read, 2565 .phy_write = mt7531_ind_phy_write, 2566 .pad_setup = mt7531_pad_setup, 2567 .cpu_port_config = mt7531_cpu_port_config, 2568 .phy_mode_supported = mt7531_phy_mode_supported, 2569 .mac_port_validate = mt7531_mac_port_validate, 2570 .mac_port_get_state = mt7531_phylink_mac_link_state, 2571 .mac_port_config = mt7531_mac_config, 2572 .mac_pcs_an_restart = mt7531_sgmii_restart_an, 2573 .mac_pcs_link_up = mt7531_sgmii_link_up_force, 2574 }, 2575 }; 2576 2577 static const struct of_device_id mt7530_of_match[] = { 2578 { .compatible = "mediatek,mt7621", .data = &mt753x_table[ID_MT7621], }, 2579 { .compatible = "mediatek,mt7530", .data = &mt753x_table[ID_MT7530], }, 2580 { .compatible = "mediatek,mt7531", .data = &mt753x_table[ID_MT7531], }, 2581 { /* sentinel */ }, 2582 }; 2583 MODULE_DEVICE_TABLE(of, mt7530_of_match); 2584 2585 static int 2586 mt7530_probe(struct mdio_device *mdiodev) 2587 { 2588 struct mt7530_priv *priv; 2589 struct device_node *dn; 2590 2591 dn = mdiodev->dev.of_node; 2592 2593 priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL); 2594 if (!priv) 2595 return -ENOMEM; 2596 2597 priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL); 2598 if (!priv->ds) 2599 return -ENOMEM; 2600 2601 priv->ds->dev = &mdiodev->dev; 2602 priv->ds->num_ports = DSA_MAX_PORTS; 2603 2604 /* Use medatek,mcm property to distinguish hardware type that would 2605 * casues a little bit differences on power-on sequence. 2606 */ 2607 priv->mcm = of_property_read_bool(dn, "mediatek,mcm"); 2608 if (priv->mcm) { 2609 dev_info(&mdiodev->dev, "MT7530 adapts as multi-chip module\n"); 2610 2611 priv->rstc = devm_reset_control_get(&mdiodev->dev, "mcm"); 2612 if (IS_ERR(priv->rstc)) { 2613 dev_err(&mdiodev->dev, "Couldn't get our reset line\n"); 2614 return PTR_ERR(priv->rstc); 2615 } 2616 } 2617 2618 /* Get the hardware identifier from the devicetree node. 2619 * We will need it for some of the clock and regulator setup. 2620 */ 2621 priv->info = of_device_get_match_data(&mdiodev->dev); 2622 if (!priv->info) 2623 return -EINVAL; 2624 2625 /* Sanity check if these required device operations are filled 2626 * properly. 2627 */ 2628 if (!priv->info->sw_setup || !priv->info->pad_setup || 2629 !priv->info->phy_read || !priv->info->phy_write || 2630 !priv->info->phy_mode_supported || 2631 !priv->info->mac_port_validate || 2632 !priv->info->mac_port_get_state || !priv->info->mac_port_config) 2633 return -EINVAL; 2634 2635 priv->id = priv->info->id; 2636 2637 if (priv->id == ID_MT7530) { 2638 priv->core_pwr = devm_regulator_get(&mdiodev->dev, "core"); 2639 if (IS_ERR(priv->core_pwr)) 2640 return PTR_ERR(priv->core_pwr); 2641 2642 priv->io_pwr = devm_regulator_get(&mdiodev->dev, "io"); 2643 if (IS_ERR(priv->io_pwr)) 2644 return PTR_ERR(priv->io_pwr); 2645 } 2646 2647 /* Not MCM that indicates switch works as the remote standalone 2648 * integrated circuit so the GPIO pin would be used to complete 2649 * the reset, otherwise memory-mapped register accessing used 2650 * through syscon provides in the case of MCM. 2651 */ 2652 if (!priv->mcm) { 2653 priv->reset = devm_gpiod_get_optional(&mdiodev->dev, "reset", 2654 GPIOD_OUT_LOW); 2655 if (IS_ERR(priv->reset)) { 2656 dev_err(&mdiodev->dev, "Couldn't get our reset line\n"); 2657 return PTR_ERR(priv->reset); 2658 } 2659 } 2660 2661 priv->bus = mdiodev->bus; 2662 priv->dev = &mdiodev->dev; 2663 priv->ds->priv = priv; 2664 priv->ds->ops = &mt7530_switch_ops; 2665 mutex_init(&priv->reg_mutex); 2666 dev_set_drvdata(&mdiodev->dev, priv); 2667 2668 return dsa_register_switch(priv->ds); 2669 } 2670 2671 static void 2672 mt7530_remove(struct mdio_device *mdiodev) 2673 { 2674 struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev); 2675 int ret = 0; 2676 2677 ret = regulator_disable(priv->core_pwr); 2678 if (ret < 0) 2679 dev_err(priv->dev, 2680 "Failed to disable core power: %d\n", ret); 2681 2682 ret = regulator_disable(priv->io_pwr); 2683 if (ret < 0) 2684 dev_err(priv->dev, "Failed to disable io pwr: %d\n", 2685 ret); 2686 2687 dsa_unregister_switch(priv->ds); 2688 mutex_destroy(&priv->reg_mutex); 2689 } 2690 2691 static struct mdio_driver mt7530_mdio_driver = { 2692 .probe = mt7530_probe, 2693 .remove = mt7530_remove, 2694 .mdiodrv.driver = { 2695 .name = "mt7530", 2696 .of_match_table = mt7530_of_match, 2697 }, 2698 }; 2699 2700 mdio_module_driver(mt7530_mdio_driver); 2701 2702 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 2703 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch"); 2704 MODULE_LICENSE("GPL"); 2705