1 // SPDX-License-Identifier: GPL-2.0-only
3 * Mediatek MT7530 DSA Switch driver
4 * Copyright (C) 2017 Sean Wang <sean.wang@mediatek.com>
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_irq.h>
14 #include <linux/of_mdio.h>
15 #include <linux/of_net.h>
16 #include <linux/of_platform.h>
17 #include <linux/phylink.h>
18 #include <linux/regmap.h>
19 #include <linux/regulator/consumer.h>
20 #include <linux/reset.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/gpio/driver.h>
27 static struct mt753x_pcs *pcs_to_mt753x_pcs(struct phylink_pcs *pcs)
29 return container_of(pcs, struct mt753x_pcs, pcs);
32 /* String, offset, and register size in bytes if different from 4 bytes */
33 static const struct mt7530_mib_desc mt7530_mib[] = {
34 MIB_DESC(1, 0x00, "TxDrop"),
35 MIB_DESC(1, 0x04, "TxCrcErr"),
36 MIB_DESC(1, 0x08, "TxUnicast"),
37 MIB_DESC(1, 0x0c, "TxMulticast"),
38 MIB_DESC(1, 0x10, "TxBroadcast"),
39 MIB_DESC(1, 0x14, "TxCollision"),
40 MIB_DESC(1, 0x18, "TxSingleCollision"),
41 MIB_DESC(1, 0x1c, "TxMultipleCollision"),
42 MIB_DESC(1, 0x20, "TxDeferred"),
43 MIB_DESC(1, 0x24, "TxLateCollision"),
44 MIB_DESC(1, 0x28, "TxExcessiveCollistion"),
45 MIB_DESC(1, 0x2c, "TxPause"),
46 MIB_DESC(1, 0x30, "TxPktSz64"),
47 MIB_DESC(1, 0x34, "TxPktSz65To127"),
48 MIB_DESC(1, 0x38, "TxPktSz128To255"),
49 MIB_DESC(1, 0x3c, "TxPktSz256To511"),
50 MIB_DESC(1, 0x40, "TxPktSz512To1023"),
51 MIB_DESC(1, 0x44, "Tx1024ToMax"),
52 MIB_DESC(2, 0x48, "TxBytes"),
53 MIB_DESC(1, 0x60, "RxDrop"),
54 MIB_DESC(1, 0x64, "RxFiltering"),
55 MIB_DESC(1, 0x68, "RxUnicast"),
56 MIB_DESC(1, 0x6c, "RxMulticast"),
57 MIB_DESC(1, 0x70, "RxBroadcast"),
58 MIB_DESC(1, 0x74, "RxAlignErr"),
59 MIB_DESC(1, 0x78, "RxCrcErr"),
60 MIB_DESC(1, 0x7c, "RxUnderSizeErr"),
61 MIB_DESC(1, 0x80, "RxFragErr"),
62 MIB_DESC(1, 0x84, "RxOverSzErr"),
63 MIB_DESC(1, 0x88, "RxJabberErr"),
64 MIB_DESC(1, 0x8c, "RxPause"),
65 MIB_DESC(1, 0x90, "RxPktSz64"),
66 MIB_DESC(1, 0x94, "RxPktSz65To127"),
67 MIB_DESC(1, 0x98, "RxPktSz128To255"),
68 MIB_DESC(1, 0x9c, "RxPktSz256To511"),
69 MIB_DESC(1, 0xa0, "RxPktSz512To1023"),
70 MIB_DESC(1, 0xa4, "RxPktSz1024ToMax"),
71 MIB_DESC(2, 0xa8, "RxBytes"),
72 MIB_DESC(1, 0xb0, "RxCtrlDrop"),
73 MIB_DESC(1, 0xb4, "RxIngressDrop"),
74 MIB_DESC(1, 0xb8, "RxArlDrop"),
77 /* Since phy_device has not yet been created and
78 * phy_{read,write}_mmd_indirect is not available, we provide our own
79 * core_{read,write}_mmd_indirect with core_{clear,write,set} wrappers
80 * to complete this function.
83 core_read_mmd_indirect(struct mt7530_priv *priv, int prtad, int devad)
85 struct mii_bus *bus = priv->bus;
88 /* Write the desired MMD Devad */
89 ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
93 /* Write the desired MMD register address */
94 ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
98 /* Select the Function : DATA with no post increment */
99 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
103 /* Read the content of the MMD's selected register */
104 value = bus->read(bus, 0, MII_MMD_DATA);
108 dev_err(&bus->dev, "failed to read mmd register\n");
114 core_write_mmd_indirect(struct mt7530_priv *priv, int prtad,
117 struct mii_bus *bus = priv->bus;
120 /* Write the desired MMD Devad */
121 ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
125 /* Write the desired MMD register address */
126 ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
130 /* Select the Function : DATA with no post increment */
131 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
135 /* Write the data into MMD's selected register */
136 ret = bus->write(bus, 0, MII_MMD_DATA, data);
140 "failed to write mmd register\n");
145 mt7530_mutex_lock(struct mt7530_priv *priv)
148 mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
152 mt7530_mutex_unlock(struct mt7530_priv *priv)
155 mutex_unlock(&priv->bus->mdio_lock);
159 core_write(struct mt7530_priv *priv, u32 reg, u32 val)
161 mt7530_mutex_lock(priv);
163 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
165 mt7530_mutex_unlock(priv);
169 core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set)
173 mt7530_mutex_lock(priv);
175 val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2);
178 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
180 mt7530_mutex_unlock(priv);
184 core_set(struct mt7530_priv *priv, u32 reg, u32 val)
186 core_rmw(priv, reg, 0, val);
190 core_clear(struct mt7530_priv *priv, u32 reg, u32 val)
192 core_rmw(priv, reg, val, 0);
196 mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val)
200 ret = regmap_write(priv->regmap, reg, val);
204 "failed to write mt7530 register\n");
210 mt7530_mii_read(struct mt7530_priv *priv, u32 reg)
215 ret = regmap_read(priv->regmap, reg, &val);
219 "failed to read mt7530 register\n");
227 mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
229 mt7530_mutex_lock(priv);
231 mt7530_mii_write(priv, reg, val);
233 mt7530_mutex_unlock(priv);
237 _mt7530_unlocked_read(struct mt7530_dummy_poll *p)
239 return mt7530_mii_read(p->priv, p->reg);
243 _mt7530_read(struct mt7530_dummy_poll *p)
247 mt7530_mutex_lock(p->priv);
249 val = mt7530_mii_read(p->priv, p->reg);
251 mt7530_mutex_unlock(p->priv);
257 mt7530_read(struct mt7530_priv *priv, u32 reg)
259 struct mt7530_dummy_poll p;
261 INIT_MT7530_DUMMY_POLL(&p, priv, reg);
262 return _mt7530_read(&p);
266 mt7530_rmw(struct mt7530_priv *priv, u32 reg,
269 mt7530_mutex_lock(priv);
271 regmap_update_bits(priv->regmap, reg, mask, set);
273 mt7530_mutex_unlock(priv);
277 mt7530_set(struct mt7530_priv *priv, u32 reg, u32 val)
279 mt7530_rmw(priv, reg, val, val);
283 mt7530_clear(struct mt7530_priv *priv, u32 reg, u32 val)
285 mt7530_rmw(priv, reg, val, 0);
289 mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp)
293 struct mt7530_dummy_poll p;
295 /* Set the command operating upon the MAC address entries */
296 val = ATC_BUSY | ATC_MAT(0) | cmd;
297 mt7530_write(priv, MT7530_ATC, val);
299 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_ATC);
300 ret = readx_poll_timeout(_mt7530_read, &p, val,
301 !(val & ATC_BUSY), 20, 20000);
303 dev_err(priv->dev, "reset timeout\n");
307 /* Additional sanity for read command if the specified
310 val = mt7530_read(priv, MT7530_ATC);
311 if ((cmd == MT7530_FDB_READ) && (val & ATC_INVALID))
321 mt7530_fdb_read(struct mt7530_priv *priv, struct mt7530_fdb *fdb)
326 /* Read from ARL table into an array */
327 for (i = 0; i < 3; i++) {
328 reg[i] = mt7530_read(priv, MT7530_TSRA1 + (i * 4));
330 dev_dbg(priv->dev, "%s(%d) reg[%d]=0x%x\n",
331 __func__, __LINE__, i, reg[i]);
334 fdb->vid = (reg[1] >> CVID) & CVID_MASK;
335 fdb->aging = (reg[2] >> AGE_TIMER) & AGE_TIMER_MASK;
336 fdb->port_mask = (reg[2] >> PORT_MAP) & PORT_MAP_MASK;
337 fdb->mac[0] = (reg[0] >> MAC_BYTE_0) & MAC_BYTE_MASK;
338 fdb->mac[1] = (reg[0] >> MAC_BYTE_1) & MAC_BYTE_MASK;
339 fdb->mac[2] = (reg[0] >> MAC_BYTE_2) & MAC_BYTE_MASK;
340 fdb->mac[3] = (reg[0] >> MAC_BYTE_3) & MAC_BYTE_MASK;
341 fdb->mac[4] = (reg[1] >> MAC_BYTE_4) & MAC_BYTE_MASK;
342 fdb->mac[5] = (reg[1] >> MAC_BYTE_5) & MAC_BYTE_MASK;
343 fdb->noarp = ((reg[2] >> ENT_STATUS) & ENT_STATUS_MASK) == STATIC_ENT;
347 mt7530_fdb_write(struct mt7530_priv *priv, u16 vid,
348 u8 port_mask, const u8 *mac,
354 reg[1] |= vid & CVID_MASK;
356 reg[1] |= ATA2_FID(FID_BRIDGED);
357 reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER;
358 reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP;
359 /* STATIC_ENT indicate that entry is static wouldn't
360 * be aged out and STATIC_EMP specified as erasing an
363 reg[2] |= (type & ENT_STATUS_MASK) << ENT_STATUS;
364 reg[1] |= mac[5] << MAC_BYTE_5;
365 reg[1] |= mac[4] << MAC_BYTE_4;
366 reg[0] |= mac[3] << MAC_BYTE_3;
367 reg[0] |= mac[2] << MAC_BYTE_2;
368 reg[0] |= mac[1] << MAC_BYTE_1;
369 reg[0] |= mac[0] << MAC_BYTE_0;
371 /* Write array into the ARL table */
372 for (i = 0; i < 3; i++)
373 mt7530_write(priv, MT7530_ATA1 + (i * 4), reg[i]);
376 /* Set up switch core clock for MT7530 */
377 static void mt7530_pll_setup(struct mt7530_priv *priv)
379 /* Disable core clock */
380 core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
383 core_write(priv, CORE_GSWPLL_GRP1, 0);
385 /* Set core clock into 500Mhz */
386 core_write(priv, CORE_GSWPLL_GRP2,
387 RG_GSWPLL_POSDIV_500M(1) |
388 RG_GSWPLL_FBKDIV_500M(25));
391 core_write(priv, CORE_GSWPLL_GRP1,
393 RG_GSWPLL_POSDIV_200M(2) |
394 RG_GSWPLL_FBKDIV_200M(32));
398 /* Enable core clock */
399 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
402 /* If port 6 is available as a CPU port, always prefer that as the default,
403 * otherwise don't care.
405 static struct dsa_port *
406 mt753x_preferred_default_local_cpu_port(struct dsa_switch *ds)
408 struct dsa_port *cpu_dp = dsa_to_port(ds, 6);
410 if (dsa_port_is_cpu(cpu_dp))
416 /* Setup port 6 interface mode and TRGMII TX circuit */
418 mt7530_setup_port6(struct dsa_switch *ds, phy_interface_t interface)
420 struct mt7530_priv *priv = ds->priv;
421 u32 ncpo1, ssc_delta, xtal;
423 /* Disable the MT7530 TRGMII clocks */
424 core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN);
426 if (interface == PHY_INTERFACE_MODE_RGMII) {
427 mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
432 mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, P6_INTF_MODE(1));
434 xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK;
436 if (xtal == HWTRAP_XTAL_25MHZ)
441 if (priv->id == ID_MT7621) {
442 /* PLL frequency: 125MHz: 1.0GBit */
443 if (xtal == HWTRAP_XTAL_40MHZ)
445 if (xtal == HWTRAP_XTAL_25MHZ)
447 } else { /* PLL frequency: 250MHz: 2.0Gbit */
448 if (xtal == HWTRAP_XTAL_40MHZ)
450 if (xtal == HWTRAP_XTAL_25MHZ)
454 /* Setup the MT7530 TRGMII Tx Clock */
455 core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1));
456 core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0));
457 core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta));
458 core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta));
459 core_write(priv, CORE_PLL_GROUP4, RG_SYSPLL_DDSFBK_EN |
460 RG_SYSPLL_BIAS_EN | RG_SYSPLL_BIAS_LPF_EN);
461 core_write(priv, CORE_PLL_GROUP2, RG_SYSPLL_EN_NORMAL |
462 RG_SYSPLL_VODEN | RG_SYSPLL_POSDIV(1));
463 core_write(priv, CORE_PLL_GROUP7, RG_LCDDS_PCW_NCPO_CHG |
464 RG_LCCDS_C(3) | RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
466 /* Enable the MT7530 TRGMII clocks */
467 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN);
471 mt7531_pll_setup(struct mt7530_priv *priv)
478 val = mt7530_read(priv, MT7531_CREV);
479 top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR);
480 hwstrap = mt7530_read(priv, MT7531_HWTRAP);
481 if ((val & CHIP_REV_M) > 0)
482 xtal = (top_sig & PAD_MCM_SMI_EN) ? HWTRAP_XTAL_FSEL_40MHZ :
483 HWTRAP_XTAL_FSEL_25MHZ;
485 xtal = hwstrap & HWTRAP_XTAL_FSEL_MASK;
487 /* Step 1 : Disable MT7531 COREPLL */
488 val = mt7530_read(priv, MT7531_PLLGP_EN);
490 mt7530_write(priv, MT7531_PLLGP_EN, val);
492 /* Step 2: switch to XTAL output */
493 val = mt7530_read(priv, MT7531_PLLGP_EN);
495 mt7530_write(priv, MT7531_PLLGP_EN, val);
497 val = mt7530_read(priv, MT7531_PLLGP_CR0);
498 val &= ~RG_COREPLL_EN;
499 mt7530_write(priv, MT7531_PLLGP_CR0, val);
501 /* Step 3: disable PLLGP and enable program PLLGP */
502 val = mt7530_read(priv, MT7531_PLLGP_EN);
504 mt7530_write(priv, MT7531_PLLGP_EN, val);
506 /* Step 4: program COREPLL output frequency to 500MHz */
507 val = mt7530_read(priv, MT7531_PLLGP_CR0);
508 val &= ~RG_COREPLL_POSDIV_M;
509 val |= 2 << RG_COREPLL_POSDIV_S;
510 mt7530_write(priv, MT7531_PLLGP_CR0, val);
511 usleep_range(25, 35);
514 case HWTRAP_XTAL_FSEL_25MHZ:
515 val = mt7530_read(priv, MT7531_PLLGP_CR0);
516 val &= ~RG_COREPLL_SDM_PCW_M;
517 val |= 0x140000 << RG_COREPLL_SDM_PCW_S;
518 mt7530_write(priv, MT7531_PLLGP_CR0, val);
520 case HWTRAP_XTAL_FSEL_40MHZ:
521 val = mt7530_read(priv, MT7531_PLLGP_CR0);
522 val &= ~RG_COREPLL_SDM_PCW_M;
523 val |= 0x190000 << RG_COREPLL_SDM_PCW_S;
524 mt7530_write(priv, MT7531_PLLGP_CR0, val);
528 /* Set feedback divide ratio update signal to high */
529 val = mt7530_read(priv, MT7531_PLLGP_CR0);
530 val |= RG_COREPLL_SDM_PCW_CHG;
531 mt7530_write(priv, MT7531_PLLGP_CR0, val);
532 /* Wait for at least 16 XTAL clocks */
533 usleep_range(10, 20);
535 /* Step 5: set feedback divide ratio update signal to low */
536 val = mt7530_read(priv, MT7531_PLLGP_CR0);
537 val &= ~RG_COREPLL_SDM_PCW_CHG;
538 mt7530_write(priv, MT7531_PLLGP_CR0, val);
540 /* Enable 325M clock for SGMII */
541 mt7530_write(priv, MT7531_ANA_PLLGP_CR5, 0xad0000);
543 /* Enable 250SSC clock for RGMII */
544 mt7530_write(priv, MT7531_ANA_PLLGP_CR2, 0x4f40000);
546 /* Step 6: Enable MT7531 PLL */
547 val = mt7530_read(priv, MT7531_PLLGP_CR0);
548 val |= RG_COREPLL_EN;
549 mt7530_write(priv, MT7531_PLLGP_CR0, val);
551 val = mt7530_read(priv, MT7531_PLLGP_EN);
553 mt7530_write(priv, MT7531_PLLGP_EN, val);
554 usleep_range(25, 35);
558 mt7530_mib_reset(struct dsa_switch *ds)
560 struct mt7530_priv *priv = ds->priv;
562 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_FLUSH);
563 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE);
566 static int mt7530_phy_read_c22(struct mt7530_priv *priv, int port, int regnum)
568 return mdiobus_read_nested(priv->bus, port, regnum);
571 static int mt7530_phy_write_c22(struct mt7530_priv *priv, int port, int regnum,
574 return mdiobus_write_nested(priv->bus, port, regnum, val);
577 static int mt7530_phy_read_c45(struct mt7530_priv *priv, int port,
578 int devad, int regnum)
580 return mdiobus_c45_read_nested(priv->bus, port, devad, regnum);
583 static int mt7530_phy_write_c45(struct mt7530_priv *priv, int port, int devad,
586 return mdiobus_c45_write_nested(priv->bus, port, devad, regnum, val);
590 mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
593 struct mt7530_dummy_poll p;
597 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
599 mt7530_mutex_lock(priv);
601 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
602 !(val & MT7531_PHY_ACS_ST), 20, 100000);
604 dev_err(priv->dev, "poll timeout\n");
608 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
609 MT7531_MDIO_DEV_ADDR(devad) | regnum;
610 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
612 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
613 !(val & MT7531_PHY_ACS_ST), 20, 100000);
615 dev_err(priv->dev, "poll timeout\n");
619 reg = MT7531_MDIO_CL45_READ | MT7531_MDIO_PHY_ADDR(port) |
620 MT7531_MDIO_DEV_ADDR(devad);
621 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
623 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
624 !(val & MT7531_PHY_ACS_ST), 20, 100000);
626 dev_err(priv->dev, "poll timeout\n");
630 ret = val & MT7531_MDIO_RW_DATA_MASK;
632 mt7530_mutex_unlock(priv);
638 mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
639 int regnum, u16 data)
641 struct mt7530_dummy_poll p;
645 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
647 mt7530_mutex_lock(priv);
649 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
650 !(val & MT7531_PHY_ACS_ST), 20, 100000);
652 dev_err(priv->dev, "poll timeout\n");
656 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
657 MT7531_MDIO_DEV_ADDR(devad) | regnum;
658 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
660 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
661 !(val & MT7531_PHY_ACS_ST), 20, 100000);
663 dev_err(priv->dev, "poll timeout\n");
667 reg = MT7531_MDIO_CL45_WRITE | MT7531_MDIO_PHY_ADDR(port) |
668 MT7531_MDIO_DEV_ADDR(devad) | data;
669 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
671 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
672 !(val & MT7531_PHY_ACS_ST), 20, 100000);
674 dev_err(priv->dev, "poll timeout\n");
679 mt7530_mutex_unlock(priv);
685 mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
687 struct mt7530_dummy_poll p;
691 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
693 mt7530_mutex_lock(priv);
695 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
696 !(val & MT7531_PHY_ACS_ST), 20, 100000);
698 dev_err(priv->dev, "poll timeout\n");
702 val = MT7531_MDIO_CL22_READ | MT7531_MDIO_PHY_ADDR(port) |
703 MT7531_MDIO_REG_ADDR(regnum);
705 mt7530_mii_write(priv, MT7531_PHY_IAC, val | MT7531_PHY_ACS_ST);
707 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
708 !(val & MT7531_PHY_ACS_ST), 20, 100000);
710 dev_err(priv->dev, "poll timeout\n");
714 ret = val & MT7531_MDIO_RW_DATA_MASK;
716 mt7530_mutex_unlock(priv);
722 mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
725 struct mt7530_dummy_poll p;
729 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
731 mt7530_mutex_lock(priv);
733 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
734 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
736 dev_err(priv->dev, "poll timeout\n");
740 reg = MT7531_MDIO_CL22_WRITE | MT7531_MDIO_PHY_ADDR(port) |
741 MT7531_MDIO_REG_ADDR(regnum) | data;
743 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
745 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
746 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
748 dev_err(priv->dev, "poll timeout\n");
753 mt7530_mutex_unlock(priv);
759 mt753x_phy_read_c22(struct mii_bus *bus, int port, int regnum)
761 struct mt7530_priv *priv = bus->priv;
763 return priv->info->phy_read_c22(priv, port, regnum);
767 mt753x_phy_read_c45(struct mii_bus *bus, int port, int devad, int regnum)
769 struct mt7530_priv *priv = bus->priv;
771 return priv->info->phy_read_c45(priv, port, devad, regnum);
775 mt753x_phy_write_c22(struct mii_bus *bus, int port, int regnum, u16 val)
777 struct mt7530_priv *priv = bus->priv;
779 return priv->info->phy_write_c22(priv, port, regnum, val);
783 mt753x_phy_write_c45(struct mii_bus *bus, int port, int devad, int regnum,
786 struct mt7530_priv *priv = bus->priv;
788 return priv->info->phy_write_c45(priv, port, devad, regnum, val);
792 mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
797 if (stringset != ETH_SS_STATS)
800 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++)
801 ethtool_puts(&data, mt7530_mib[i].name);
805 mt7530_get_ethtool_stats(struct dsa_switch *ds, int port,
808 struct mt7530_priv *priv = ds->priv;
809 const struct mt7530_mib_desc *mib;
813 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) {
814 mib = &mt7530_mib[i];
815 reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset;
817 data[i] = mt7530_read(priv, reg);
818 if (mib->size == 2) {
819 hi = mt7530_read(priv, reg + 4);
826 mt7530_get_sset_count(struct dsa_switch *ds, int port, int sset)
828 if (sset != ETH_SS_STATS)
831 return ARRAY_SIZE(mt7530_mib);
835 mt7530_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
837 struct mt7530_priv *priv = ds->priv;
838 unsigned int secs = msecs / 1000;
839 unsigned int tmp_age_count;
840 unsigned int error = -1;
841 unsigned int age_count;
842 unsigned int age_unit;
844 /* Applied timer is (AGE_CNT + 1) * (AGE_UNIT + 1) seconds */
845 if (secs < 1 || secs > (AGE_CNT_MAX + 1) * (AGE_UNIT_MAX + 1))
848 /* iterate through all possible age_count to find the closest pair */
849 for (tmp_age_count = 0; tmp_age_count <= AGE_CNT_MAX; ++tmp_age_count) {
850 unsigned int tmp_age_unit = secs / (tmp_age_count + 1) - 1;
852 if (tmp_age_unit <= AGE_UNIT_MAX) {
853 unsigned int tmp_error = secs -
854 (tmp_age_count + 1) * (tmp_age_unit + 1);
856 /* found a closer pair */
857 if (error > tmp_error) {
859 age_count = tmp_age_count;
860 age_unit = tmp_age_unit;
863 /* found the exact match, so break the loop */
869 mt7530_write(priv, MT7530_AAC, AGE_CNT(age_count) | AGE_UNIT(age_unit));
874 static const char *p5_intf_modes(unsigned int p5_interface)
876 switch (p5_interface) {
879 case P5_INTF_SEL_PHY_P0:
881 case P5_INTF_SEL_PHY_P4:
883 case P5_INTF_SEL_GMAC5:
890 static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
892 struct mt7530_priv *priv = ds->priv;
896 mutex_lock(&priv->reg_mutex);
898 val = mt7530_read(priv, MT7530_MHWTRAP);
900 val |= MHWTRAP_MANUAL | MHWTRAP_P5_MAC_SEL | MHWTRAP_P5_DIS;
901 val &= ~MHWTRAP_P5_RGMII_MODE & ~MHWTRAP_PHY0_SEL;
903 switch (priv->p5_intf_sel) {
904 case P5_INTF_SEL_PHY_P0:
905 /* MT7530_P5_MODE_GPHY_P0: 2nd GMAC -> P5 -> P0 */
906 val |= MHWTRAP_PHY0_SEL;
908 case P5_INTF_SEL_PHY_P4:
909 /* MT7530_P5_MODE_GPHY_P4: 2nd GMAC -> P5 -> P4 */
910 val &= ~MHWTRAP_P5_MAC_SEL & ~MHWTRAP_P5_DIS;
912 /* Setup the MAC by default for the cpu port */
913 mt7530_write(priv, MT7530_PMCR_P(5), 0x56300);
915 case P5_INTF_SEL_GMAC5:
916 /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
917 val &= ~MHWTRAP_P5_DIS;
923 /* Setup RGMII settings */
924 if (phy_interface_mode_is_rgmii(interface)) {
925 val |= MHWTRAP_P5_RGMII_MODE;
927 /* P5 RGMII RX Clock Control: delay setting for 1000M */
928 mt7530_write(priv, MT7530_P5RGMIIRXCR, CSR_RGMII_EDGE_ALIGN);
930 /* Don't set delay in DSA mode */
931 if (!dsa_is_dsa_port(priv->ds, 5) &&
932 (interface == PHY_INTERFACE_MODE_RGMII_TXID ||
933 interface == PHY_INTERFACE_MODE_RGMII_ID))
934 tx_delay = 4; /* n * 0.5 ns */
936 /* P5 RGMII TX Clock Control: delay x */
937 mt7530_write(priv, MT7530_P5RGMIITXCR,
938 CSR_RGMII_TXC_CFG(0x10 + tx_delay));
940 /* reduce P5 RGMII Tx driving, 8mA */
941 mt7530_write(priv, MT7530_IO_DRV_CR,
942 P5_IO_CLK_DRV(1) | P5_IO_DATA_DRV(1));
945 mt7530_write(priv, MT7530_MHWTRAP, val);
947 dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
948 val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));
950 mutex_unlock(&priv->reg_mutex);
953 /* In Clause 5 of IEEE Std 802-2014, two sublayers of the data link layer (DLL)
954 * of the Open Systems Interconnection basic reference model (OSI/RM) are
955 * described; the medium access control (MAC) and logical link control (LLC)
956 * sublayers. The MAC sublayer is the one facing the physical layer.
958 * In 8.2 of IEEE Std 802.1Q-2022, the Bridge architecture is described. A
959 * Bridge component comprises a MAC Relay Entity for interconnecting the Ports
960 * of the Bridge, at least two Ports, and higher layer entities with at least a
961 * Spanning Tree Protocol Entity included.
963 * Each Bridge Port also functions as an end station and shall provide the MAC
964 * Service to an LLC Entity. Each instance of the MAC Service is provided to a
965 * distinct LLC Entity that supports protocol identification, multiplexing, and
966 * demultiplexing, for protocol data unit (PDU) transmission and reception by
967 * one or more higher layer entities.
969 * It is described in 8.13.9 of IEEE Std 802.1Q-2022 that in a Bridge, the LLC
970 * Entity associated with each Bridge Port is modeled as being directly
971 * connected to the attached Local Area Network (LAN).
973 * On the switch with CPU port architecture, CPU port functions as Management
974 * Port, and the Management Port functionality is provided by software which
975 * functions as an end station. Software is connected to an IEEE 802 LAN that is
976 * wholly contained within the system that incorporates the Bridge. Software
977 * provides access to the LLC Entity associated with each Bridge Port by the
978 * value of the source port field on the special tag on the frame received by
981 * We call frames that carry control information to determine the active
982 * topology and current extent of each Virtual Local Area Network (VLAN), i.e.,
983 * spanning tree or Shortest Path Bridging (SPB) and Multiple VLAN Registration
984 * Protocol Data Units (MVRPDUs), and frames from other link constrained
985 * protocols, such as Extensible Authentication Protocol over LAN (EAPOL) and
986 * Link Layer Discovery Protocol (LLDP), link-local frames. They are not
987 * forwarded by a Bridge. Permanently configured entries in the filtering
988 * database (FDB) ensure that such frames are discarded by the Forwarding
989 * Process. In 8.6.3 of IEEE Std 802.1Q-2022, this is described in detail:
991 * Each of the reserved MAC addresses specified in Table 8-1
992 * (01-80-C2-00-00-[00,01,02,03,04,05,06,07,08,09,0A,0B,0C,0D,0E,0F]) shall be
993 * permanently configured in the FDB in C-VLAN components and ERs.
995 * Each of the reserved MAC addresses specified in Table 8-2
996 * (01-80-C2-00-00-[01,02,03,04,05,06,07,08,09,0A,0E]) shall be permanently
997 * configured in the FDB in S-VLAN components.
999 * Each of the reserved MAC addresses specified in Table 8-3
1000 * (01-80-C2-00-00-[01,02,04,0E]) shall be permanently configured in the FDB in
1003 * The FDB entries for reserved MAC addresses shall specify filtering for all
1004 * Bridge Ports and all VIDs. Management shall not provide the capability to
1005 * modify or remove entries for reserved MAC addresses.
1007 * The addresses in Table 8-1, Table 8-2, and Table 8-3 determine the scope of
1008 * propagation of PDUs within a Bridged Network, as follows:
1010 * The Nearest Bridge group address (01-80-C2-00-00-0E) is an address that no
1011 * conformant Two-Port MAC Relay (TPMR) component, Service VLAN (S-VLAN)
1012 * component, Customer VLAN (C-VLAN) component, or MAC Bridge can forward.
1013 * PDUs transmitted using this destination address, or any other addresses
1014 * that appear in Table 8-1, Table 8-2, and Table 8-3
1015 * (01-80-C2-00-00-[00,01,02,03,04,05,06,07,08,09,0A,0B,0C,0D,0E,0F]), can
1016 * therefore travel no further than those stations that can be reached via a
1017 * single individual LAN from the originating station.
1019 * The Nearest non-TPMR Bridge group address (01-80-C2-00-00-03), is an
1020 * address that no conformant S-VLAN component, C-VLAN component, or MAC
1021 * Bridge can forward; however, this address is relayed by a TPMR component.
1022 * PDUs using this destination address, or any of the other addresses that
1023 * appear in both Table 8-1 and Table 8-2 but not in Table 8-3
1024 * (01-80-C2-00-00-[00,03,05,06,07,08,09,0A,0B,0C,0D,0F]), will be relayed by
1025 * any TPMRs but will propagate no further than the nearest S-VLAN component,
1026 * C-VLAN component, or MAC Bridge.
1028 * The Nearest Customer Bridge group address (01-80-C2-00-00-00) is an address
1029 * that no conformant C-VLAN component, MAC Bridge can forward; however, it is
1030 * relayed by TPMR components and S-VLAN components. PDUs using this
1031 * destination address, or any of the other addresses that appear in Table 8-1
1032 * but not in either Table 8-2 or Table 8-3 (01-80-C2-00-00-[00,0B,0C,0D,0F]),
1033 * will be relayed by TPMR components and S-VLAN components but will propagate
1034 * no further than the nearest C-VLAN component or MAC Bridge.
1036 * Because the LLC Entity associated with each Bridge Port is provided via CPU
1037 * port, we must not filter these frames but forward them to CPU port.
1039 * In a Bridge, the transmission Port is majorly decided by ingress and egress
1040 * rules, FDB, and spanning tree Port State functions of the Forwarding Process.
1041 * For link-local frames, only CPU port should be designated as destination port
1042 * in the FDB, and the other functions of the Forwarding Process must not
1043 * interfere with the decision of the transmission Port. We call this process
1044 * trapping frames to CPU port.
1046 * Therefore, on the switch with CPU port architecture, link-local frames must
1047 * be trapped to CPU port, and certain link-local frames received by a Port of a
1048 * Bridge comprising a TPMR component or an S-VLAN component must be excluded
1051 * A Bridge of the switch with CPU port architecture cannot comprise a Two-Port
1052 * MAC Relay (TPMR) component as a TPMR component supports only a subset of the
1053 * functionality of a MAC Bridge. A Bridge comprising two Ports (Management Port
1054 * doesn't count) of this architecture will either function as a standard MAC
1055 * Bridge or a standard VLAN Bridge.
1057 * Therefore, a Bridge of this architecture can only comprise S-VLAN components,
1058 * C-VLAN components, or MAC Bridge components. Since there's no TPMR component,
1059 * we don't need to relay PDUs using the destination addresses specified on the
1060 * Nearest non-TPMR section, and the proportion of the Nearest Customer Bridge
1061 * section where they must be relayed by TPMR components.
1063 * One option to trap link-local frames to CPU port is to add static FDB entries
1064 * with CPU port designated as destination port. However, because that
1065 * Independent VLAN Learning (IVL) is being used on every VID, each entry only
1066 * applies to a single VLAN Identifier (VID). For a Bridge comprising a MAC
1067 * Bridge component or a C-VLAN component, there would have to be 16 times 4096
1068 * entries. This switch intellectual property can only hold a maximum of 2048
1069 * entries. Using this option, there also isn't a mechanism to prevent
1070 * link-local frames from being discarded when the spanning tree Port State of
1071 * the reception Port is discarding.
1073 * The remaining option is to utilise the BPC, RGAC1, RGAC2, RGAC3, and RGAC4
1074 * registers. Whilst this applies to every VID, it doesn't contain all of the
1075 * reserved MAC addresses without affecting the remaining Standard Group MAC
1076 * Addresses. The REV_UN frame tag utilised using the RGAC4 register covers the
1077 * remaining 01-80-C2-00-00-[04,05,06,07,08,09,0A,0B,0C,0D,0F] destination
1078 * addresses. It also includes the 01-80-C2-00-00-22 to 01-80-C2-00-00-FF
1079 * destination addresses which may be relayed by MAC Bridges or VLAN Bridges.
1080 * The latter option provides better but not complete conformance.
1082 * This switch intellectual property also does not provide a mechanism to trap
1083 * link-local frames with specific destination addresses to CPU port by Bridge,
1084 * to conform to the filtering rules for the distinct Bridge components.
1086 * Therefore, regardless of the type of the Bridge component, link-local frames
1087 * with these destination addresses will be trapped to CPU port:
1089 * 01-80-C2-00-00-[00,01,02,03,0E]
1091 * In a Bridge comprising a MAC Bridge component or a C-VLAN component:
1093 * Link-local frames with these destination addresses won't be trapped to CPU
1094 * port which won't conform to IEEE Std 802.1Q-2022:
1096 * 01-80-C2-00-00-[04,05,06,07,08,09,0A,0B,0C,0D,0F]
1098 * In a Bridge comprising an S-VLAN component:
1100 * Link-local frames with these destination addresses will be trapped to CPU
1101 * port which won't conform to IEEE Std 802.1Q-2022:
1105 * Link-local frames with these destination addresses won't be trapped to CPU
1106 * port which won't conform to IEEE Std 802.1Q-2022:
1108 * 01-80-C2-00-00-[04,05,06,07,08,09,0A]
1110 * To trap link-local frames to CPU port as conformant as this switch
1111 * intellectual property can allow, link-local frames are made to be regarded as
1112 * Bridge Protocol Data Units (BPDUs). This is because this switch intellectual
1113 * property only lets the frames regarded as BPDUs bypass the spanning tree Port
1114 * State function of the Forwarding Process.
1116 * The only remaining interference is the ingress rules. When the reception Port
1117 * has no PVID assigned on software, VLAN-untagged frames won't be allowed in.
1118 * There doesn't seem to be a mechanism on the switch intellectual property to
1119 * have link-local frames bypass this function of the Forwarding Process.
1122 mt753x_trap_frames(struct mt7530_priv *priv)
1124 /* Trap 802.1X PAE frames and BPDUs to the CPU port(s) and egress them
1127 mt7530_rmw(priv, MT753X_BPC,
1128 MT753X_PAE_BPDU_FR | MT753X_PAE_EG_TAG_MASK |
1129 MT753X_PAE_PORT_FW_MASK | MT753X_BPDU_EG_TAG_MASK |
1130 MT753X_BPDU_PORT_FW_MASK,
1131 MT753X_PAE_BPDU_FR |
1132 MT753X_PAE_EG_TAG(MT7530_VLAN_EG_UNTAGGED) |
1133 MT753X_PAE_PORT_FW(MT753X_BPDU_CPU_ONLY) |
1134 MT753X_BPDU_EG_TAG(MT7530_VLAN_EG_UNTAGGED) |
1135 MT753X_BPDU_CPU_ONLY);
1137 /* Trap frames with :01 and :02 MAC DAs to the CPU port(s) and egress
1138 * them VLAN-untagged.
1140 mt7530_rmw(priv, MT753X_RGAC1,
1141 MT753X_R02_BPDU_FR | MT753X_R02_EG_TAG_MASK |
1142 MT753X_R02_PORT_FW_MASK | MT753X_R01_BPDU_FR |
1143 MT753X_R01_EG_TAG_MASK | MT753X_R01_PORT_FW_MASK,
1144 MT753X_R02_BPDU_FR |
1145 MT753X_R02_EG_TAG(MT7530_VLAN_EG_UNTAGGED) |
1146 MT753X_R02_PORT_FW(MT753X_BPDU_CPU_ONLY) |
1147 MT753X_R01_BPDU_FR |
1148 MT753X_R01_EG_TAG(MT7530_VLAN_EG_UNTAGGED) |
1149 MT753X_BPDU_CPU_ONLY);
1151 /* Trap frames with :03 and :0E MAC DAs to the CPU port(s) and egress
1152 * them VLAN-untagged.
1154 mt7530_rmw(priv, MT753X_RGAC2,
1155 MT753X_R0E_BPDU_FR | MT753X_R0E_EG_TAG_MASK |
1156 MT753X_R0E_PORT_FW_MASK | MT753X_R03_BPDU_FR |
1157 MT753X_R03_EG_TAG_MASK | MT753X_R03_PORT_FW_MASK,
1158 MT753X_R0E_BPDU_FR |
1159 MT753X_R0E_EG_TAG(MT7530_VLAN_EG_UNTAGGED) |
1160 MT753X_R0E_PORT_FW(MT753X_BPDU_CPU_ONLY) |
1161 MT753X_R03_BPDU_FR |
1162 MT753X_R03_EG_TAG(MT7530_VLAN_EG_UNTAGGED) |
1163 MT753X_BPDU_CPU_ONLY);
1167 mt753x_cpu_port_enable(struct dsa_switch *ds, int port)
1169 struct mt7530_priv *priv = ds->priv;
1171 /* Enable Mediatek header mode on the cpu port */
1172 mt7530_write(priv, MT7530_PVC_P(port),
1175 /* Enable flooding on the CPU port */
1176 mt7530_set(priv, MT7530_MFC, BC_FFP(BIT(port)) | UNM_FFP(BIT(port)) |
1177 UNU_FFP(BIT(port)));
1179 /* Add the CPU port to the CPU port bitmap for MT7531 and the switch on
1180 * the MT7988 SoC. Trapped frames will be forwarded to the CPU port that
1181 * is affine to the inbound user port.
1183 if (priv->id == ID_MT7531 || priv->id == ID_MT7988)
1184 mt7530_set(priv, MT7531_CFC, MT7531_CPU_PMAP(BIT(port)));
1186 /* CPU port gets connected to all user ports of
1189 mt7530_write(priv, MT7530_PCR_P(port),
1190 PCR_MATRIX(dsa_user_ports(priv->ds)));
1192 /* Set to fallback mode for independent VLAN learning */
1193 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1194 MT7530_PORT_FALLBACK_MODE);
1198 mt7530_port_enable(struct dsa_switch *ds, int port,
1199 struct phy_device *phy)
1201 struct dsa_port *dp = dsa_to_port(ds, port);
1202 struct mt7530_priv *priv = ds->priv;
1204 mutex_lock(&priv->reg_mutex);
1206 /* Allow the user port gets connected to the cpu port and also
1207 * restore the port matrix if the port is the member of a certain
1210 if (dsa_port_is_user(dp)) {
1211 struct dsa_port *cpu_dp = dp->cpu_dp;
1213 priv->ports[port].pm |= PCR_MATRIX(BIT(cpu_dp->index));
1215 priv->ports[port].enable = true;
1216 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1217 priv->ports[port].pm);
1219 mutex_unlock(&priv->reg_mutex);
1225 mt7530_port_disable(struct dsa_switch *ds, int port)
1227 struct mt7530_priv *priv = ds->priv;
1229 mutex_lock(&priv->reg_mutex);
1231 /* Clear up all port matrix which could be restored in the next
1232 * enablement for the port.
1234 priv->ports[port].enable = false;
1235 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1238 mutex_unlock(&priv->reg_mutex);
1242 mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
1244 struct mt7530_priv *priv = ds->priv;
1248 /* When a new MTU is set, DSA always set the CPU port's MTU to the
1249 * largest MTU of the user ports. Because the switch only has a global
1250 * RX length register, only allowing CPU port here is enough.
1252 if (!dsa_is_cpu_port(ds, port))
1255 mt7530_mutex_lock(priv);
1257 val = mt7530_mii_read(priv, MT7530_GMACCR);
1258 val &= ~MAX_RX_PKT_LEN_MASK;
1260 /* RX length also includes Ethernet header, MTK tag, and FCS length */
1261 length = new_mtu + ETH_HLEN + MTK_HDR_LEN + ETH_FCS_LEN;
1262 if (length <= 1522) {
1263 val |= MAX_RX_PKT_LEN_1522;
1264 } else if (length <= 1536) {
1265 val |= MAX_RX_PKT_LEN_1536;
1266 } else if (length <= 1552) {
1267 val |= MAX_RX_PKT_LEN_1552;
1269 val &= ~MAX_RX_JUMBO_MASK;
1270 val |= MAX_RX_JUMBO(DIV_ROUND_UP(length, 1024));
1271 val |= MAX_RX_PKT_LEN_JUMBO;
1274 mt7530_mii_write(priv, MT7530_GMACCR, val);
1276 mt7530_mutex_unlock(priv);
1282 mt7530_port_max_mtu(struct dsa_switch *ds, int port)
1284 return MT7530_MAX_MTU;
1288 mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1290 struct mt7530_priv *priv = ds->priv;
1294 case BR_STATE_DISABLED:
1295 stp_state = MT7530_STP_DISABLED;
1297 case BR_STATE_BLOCKING:
1298 stp_state = MT7530_STP_BLOCKING;
1300 case BR_STATE_LISTENING:
1301 stp_state = MT7530_STP_LISTENING;
1303 case BR_STATE_LEARNING:
1304 stp_state = MT7530_STP_LEARNING;
1306 case BR_STATE_FORWARDING:
1308 stp_state = MT7530_STP_FORWARDING;
1312 mt7530_rmw(priv, MT7530_SSP_P(port), FID_PST_MASK(FID_BRIDGED),
1313 FID_PST(FID_BRIDGED, stp_state));
1317 mt7530_port_pre_bridge_flags(struct dsa_switch *ds, int port,
1318 struct switchdev_brport_flags flags,
1319 struct netlink_ext_ack *extack)
1321 if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
1329 mt7530_port_bridge_flags(struct dsa_switch *ds, int port,
1330 struct switchdev_brport_flags flags,
1331 struct netlink_ext_ack *extack)
1333 struct mt7530_priv *priv = ds->priv;
1335 if (flags.mask & BR_LEARNING)
1336 mt7530_rmw(priv, MT7530_PSC_P(port), SA_DIS,
1337 flags.val & BR_LEARNING ? 0 : SA_DIS);
1339 if (flags.mask & BR_FLOOD)
1340 mt7530_rmw(priv, MT7530_MFC, UNU_FFP(BIT(port)),
1341 flags.val & BR_FLOOD ? UNU_FFP(BIT(port)) : 0);
1343 if (flags.mask & BR_MCAST_FLOOD)
1344 mt7530_rmw(priv, MT7530_MFC, UNM_FFP(BIT(port)),
1345 flags.val & BR_MCAST_FLOOD ? UNM_FFP(BIT(port)) : 0);
1347 if (flags.mask & BR_BCAST_FLOOD)
1348 mt7530_rmw(priv, MT7530_MFC, BC_FFP(BIT(port)),
1349 flags.val & BR_BCAST_FLOOD ? BC_FFP(BIT(port)) : 0);
1355 mt7530_port_bridge_join(struct dsa_switch *ds, int port,
1356 struct dsa_bridge bridge, bool *tx_fwd_offload,
1357 struct netlink_ext_ack *extack)
1359 struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
1360 struct dsa_port *cpu_dp = dp->cpu_dp;
1361 u32 port_bitmap = BIT(cpu_dp->index);
1362 struct mt7530_priv *priv = ds->priv;
1364 mutex_lock(&priv->reg_mutex);
1366 dsa_switch_for_each_user_port(other_dp, ds) {
1367 int other_port = other_dp->index;
1372 /* Add this port to the port matrix of the other ports in the
1373 * same bridge. If the port is disabled, port matrix is kept
1374 * and not being setup until the port becomes enabled.
1376 if (!dsa_port_offloads_bridge(other_dp, &bridge))
1379 if (priv->ports[other_port].enable)
1380 mt7530_set(priv, MT7530_PCR_P(other_port),
1381 PCR_MATRIX(BIT(port)));
1382 priv->ports[other_port].pm |= PCR_MATRIX(BIT(port));
1384 port_bitmap |= BIT(other_port);
1387 /* Add the all other ports to this port matrix. */
1388 if (priv->ports[port].enable)
1389 mt7530_rmw(priv, MT7530_PCR_P(port),
1390 PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap));
1391 priv->ports[port].pm |= PCR_MATRIX(port_bitmap);
1393 /* Set to fallback mode for independent VLAN learning */
1394 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1395 MT7530_PORT_FALLBACK_MODE);
1397 mutex_unlock(&priv->reg_mutex);
1403 mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
1405 struct mt7530_priv *priv = ds->priv;
1406 bool all_user_ports_removed = true;
1409 /* This is called after .port_bridge_leave when leaving a VLAN-aware
1410 * bridge. Don't set standalone ports to fallback mode.
1412 if (dsa_port_bridge_dev_get(dsa_to_port(ds, port)))
1413 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1414 MT7530_PORT_FALLBACK_MODE);
1416 mt7530_rmw(priv, MT7530_PVC_P(port),
1417 VLAN_ATTR_MASK | PVC_EG_TAG_MASK | ACC_FRM_MASK,
1418 VLAN_ATTR(MT7530_VLAN_TRANSPARENT) |
1419 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT) |
1420 MT7530_VLAN_ACC_ALL);
1423 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1426 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1427 if (dsa_is_user_port(ds, i) &&
1428 dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) {
1429 all_user_ports_removed = false;
1434 /* CPU port also does the same thing until all user ports belonging to
1435 * the CPU port get out of VLAN filtering mode.
1437 if (all_user_ports_removed) {
1438 struct dsa_port *dp = dsa_to_port(ds, port);
1439 struct dsa_port *cpu_dp = dp->cpu_dp;
1441 mt7530_write(priv, MT7530_PCR_P(cpu_dp->index),
1442 PCR_MATRIX(dsa_user_ports(priv->ds)));
1443 mt7530_write(priv, MT7530_PVC_P(cpu_dp->index), PORT_SPEC_TAG
1444 | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
1449 mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port)
1451 struct mt7530_priv *priv = ds->priv;
1453 /* Trapped into security mode allows packet forwarding through VLAN
1456 if (dsa_is_user_port(ds, port)) {
1457 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1458 MT7530_PORT_SECURITY_MODE);
1459 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1460 G0_PORT_VID(priv->ports[port].pvid));
1462 /* Only accept tagged frames if PVID is not set */
1463 if (!priv->ports[port].pvid)
1464 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1465 MT7530_VLAN_ACC_TAGGED);
1467 /* Set the port as a user port which is to be able to recognize
1468 * VID from incoming packets before fetching entry within the
1471 mt7530_rmw(priv, MT7530_PVC_P(port),
1472 VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
1473 VLAN_ATTR(MT7530_VLAN_USER) |
1474 PVC_EG_TAG(MT7530_VLAN_EG_DISABLED));
1476 /* Also set CPU ports to the "user" VLAN port attribute, to
1477 * allow VLAN classification, but keep the EG_TAG attribute as
1478 * "consistent" (i.o.w. don't change its value) for packets
1479 * received by the switch from the CPU, so that tagged packets
1480 * are forwarded to user ports as tagged, and untagged as
1483 mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK,
1484 VLAN_ATTR(MT7530_VLAN_USER));
1489 mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
1490 struct dsa_bridge bridge)
1492 struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
1493 struct dsa_port *cpu_dp = dp->cpu_dp;
1494 struct mt7530_priv *priv = ds->priv;
1496 mutex_lock(&priv->reg_mutex);
1498 dsa_switch_for_each_user_port(other_dp, ds) {
1499 int other_port = other_dp->index;
1504 /* Remove this port from the port matrix of the other ports
1505 * in the same bridge. If the port is disabled, port matrix
1506 * is kept and not being setup until the port becomes enabled.
1508 if (!dsa_port_offloads_bridge(other_dp, &bridge))
1511 if (priv->ports[other_port].enable)
1512 mt7530_clear(priv, MT7530_PCR_P(other_port),
1513 PCR_MATRIX(BIT(port)));
1514 priv->ports[other_port].pm &= ~PCR_MATRIX(BIT(port));
1517 /* Set the cpu port to be the only one in the port matrix of
1520 if (priv->ports[port].enable)
1521 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1522 PCR_MATRIX(BIT(cpu_dp->index)));
1523 priv->ports[port].pm = PCR_MATRIX(BIT(cpu_dp->index));
1525 /* When a port is removed from the bridge, the port would be set up
1526 * back to the default as is at initial boot which is a VLAN-unaware
1529 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1530 MT7530_PORT_MATRIX_MODE);
1532 mutex_unlock(&priv->reg_mutex);
1536 mt7530_port_fdb_add(struct dsa_switch *ds, int port,
1537 const unsigned char *addr, u16 vid,
1540 struct mt7530_priv *priv = ds->priv;
1542 u8 port_mask = BIT(port);
1544 mutex_lock(&priv->reg_mutex);
1545 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
1546 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1547 mutex_unlock(&priv->reg_mutex);
1553 mt7530_port_fdb_del(struct dsa_switch *ds, int port,
1554 const unsigned char *addr, u16 vid,
1557 struct mt7530_priv *priv = ds->priv;
1559 u8 port_mask = BIT(port);
1561 mutex_lock(&priv->reg_mutex);
1562 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_EMP);
1563 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1564 mutex_unlock(&priv->reg_mutex);
1570 mt7530_port_fdb_dump(struct dsa_switch *ds, int port,
1571 dsa_fdb_dump_cb_t *cb, void *data)
1573 struct mt7530_priv *priv = ds->priv;
1574 struct mt7530_fdb _fdb = { 0 };
1575 int cnt = MT7530_NUM_FDB_RECORDS;
1579 mutex_lock(&priv->reg_mutex);
1581 ret = mt7530_fdb_cmd(priv, MT7530_FDB_START, &rsp);
1586 if (rsp & ATC_SRCH_HIT) {
1587 mt7530_fdb_read(priv, &_fdb);
1588 if (_fdb.port_mask & BIT(port)) {
1589 ret = cb(_fdb.mac, _fdb.vid, _fdb.noarp,
1596 !(rsp & ATC_SRCH_END) &&
1597 !mt7530_fdb_cmd(priv, MT7530_FDB_NEXT, &rsp));
1599 mutex_unlock(&priv->reg_mutex);
1605 mt7530_port_mdb_add(struct dsa_switch *ds, int port,
1606 const struct switchdev_obj_port_mdb *mdb,
1609 struct mt7530_priv *priv = ds->priv;
1610 const u8 *addr = mdb->addr;
1615 mutex_lock(&priv->reg_mutex);
1617 mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
1618 if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
1619 port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
1622 port_mask |= BIT(port);
1623 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
1624 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1626 mutex_unlock(&priv->reg_mutex);
1632 mt7530_port_mdb_del(struct dsa_switch *ds, int port,
1633 const struct switchdev_obj_port_mdb *mdb,
1636 struct mt7530_priv *priv = ds->priv;
1637 const u8 *addr = mdb->addr;
1642 mutex_lock(&priv->reg_mutex);
1644 mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
1645 if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
1646 port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
1649 port_mask &= ~BIT(port);
1650 mt7530_fdb_write(priv, vid, port_mask, addr, -1,
1651 port_mask ? STATIC_ENT : STATIC_EMP);
1652 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1654 mutex_unlock(&priv->reg_mutex);
1660 mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid)
1662 struct mt7530_dummy_poll p;
1666 val = VTCR_BUSY | VTCR_FUNC(cmd) | vid;
1667 mt7530_write(priv, MT7530_VTCR, val);
1669 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_VTCR);
1670 ret = readx_poll_timeout(_mt7530_read, &p, val,
1671 !(val & VTCR_BUSY), 20, 20000);
1673 dev_err(priv->dev, "poll timeout\n");
1677 val = mt7530_read(priv, MT7530_VTCR);
1678 if (val & VTCR_INVALID) {
1679 dev_err(priv->dev, "read VTCR invalid\n");
1687 mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1688 struct netlink_ext_ack *extack)
1690 struct dsa_port *dp = dsa_to_port(ds, port);
1691 struct dsa_port *cpu_dp = dp->cpu_dp;
1693 if (vlan_filtering) {
1694 /* The port is being kept as VLAN-unaware port when bridge is
1695 * set up with vlan_filtering not being set, Otherwise, the
1696 * port and the corresponding CPU port is required the setup
1697 * for becoming a VLAN-aware port.
1699 mt7530_port_set_vlan_aware(ds, port);
1700 mt7530_port_set_vlan_aware(ds, cpu_dp->index);
1702 mt7530_port_set_vlan_unaware(ds, port);
1709 mt7530_hw_vlan_add(struct mt7530_priv *priv,
1710 struct mt7530_hw_vlan_entry *entry)
1712 struct dsa_port *dp = dsa_to_port(priv->ds, entry->port);
1716 new_members = entry->old_members | BIT(entry->port);
1718 /* Validate the entry with independent learning, create egress tag per
1719 * VLAN and joining the port as one of the port members.
1721 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | FID(FID_BRIDGED) |
1723 mt7530_write(priv, MT7530_VAWD1, val);
1725 /* Decide whether adding tag or not for those outgoing packets from the
1726 * port inside the VLAN.
1727 * CPU port is always taken as a tagged port for serving more than one
1728 * VLANs across and also being applied with egress type stack mode for
1729 * that VLAN tags would be appended after hardware special tag used as
1732 if (dsa_port_is_cpu(dp))
1733 val = MT7530_VLAN_EGRESS_STACK;
1734 else if (entry->untagged)
1735 val = MT7530_VLAN_EGRESS_UNTAG;
1737 val = MT7530_VLAN_EGRESS_TAG;
1738 mt7530_rmw(priv, MT7530_VAWD2,
1739 ETAG_CTRL_P_MASK(entry->port),
1740 ETAG_CTRL_P(entry->port, val));
1744 mt7530_hw_vlan_del(struct mt7530_priv *priv,
1745 struct mt7530_hw_vlan_entry *entry)
1750 new_members = entry->old_members & ~BIT(entry->port);
1752 val = mt7530_read(priv, MT7530_VAWD1);
1753 if (!(val & VLAN_VALID)) {
1755 "Cannot be deleted due to invalid entry\n");
1760 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) |
1762 mt7530_write(priv, MT7530_VAWD1, val);
1764 mt7530_write(priv, MT7530_VAWD1, 0);
1765 mt7530_write(priv, MT7530_VAWD2, 0);
1770 mt7530_hw_vlan_update(struct mt7530_priv *priv, u16 vid,
1771 struct mt7530_hw_vlan_entry *entry,
1772 mt7530_vlan_op vlan_op)
1777 mt7530_vlan_cmd(priv, MT7530_VTCR_RD_VID, vid);
1779 val = mt7530_read(priv, MT7530_VAWD1);
1781 entry->old_members = (val >> PORT_MEM_SHFT) & PORT_MEM_MASK;
1783 /* Manipulate entry */
1784 vlan_op(priv, entry);
1786 /* Flush result to hardware */
1787 mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, vid);
1791 mt7530_setup_vlan0(struct mt7530_priv *priv)
1795 /* Validate the entry with independent learning, keep the original
1796 * ingress tag attribute.
1798 val = IVL_MAC | EG_CON | PORT_MEM(MT7530_ALL_MEMBERS) | FID(FID_BRIDGED) |
1800 mt7530_write(priv, MT7530_VAWD1, val);
1802 return mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, 0);
1806 mt7530_port_vlan_add(struct dsa_switch *ds, int port,
1807 const struct switchdev_obj_port_vlan *vlan,
1808 struct netlink_ext_ack *extack)
1810 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1811 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1812 struct mt7530_hw_vlan_entry new_entry;
1813 struct mt7530_priv *priv = ds->priv;
1815 mutex_lock(&priv->reg_mutex);
1817 mt7530_hw_vlan_entry_init(&new_entry, port, untagged);
1818 mt7530_hw_vlan_update(priv, vlan->vid, &new_entry, mt7530_hw_vlan_add);
1821 priv->ports[port].pvid = vlan->vid;
1823 /* Accept all frames if PVID is set */
1824 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1825 MT7530_VLAN_ACC_ALL);
1827 /* Only configure PVID if VLAN filtering is enabled */
1828 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1829 mt7530_rmw(priv, MT7530_PPBV1_P(port),
1831 G0_PORT_VID(vlan->vid));
1832 } else if (vlan->vid && priv->ports[port].pvid == vlan->vid) {
1833 /* This VLAN is overwritten without PVID, so unset it */
1834 priv->ports[port].pvid = G0_PORT_VID_DEF;
1836 /* Only accept tagged frames if the port is VLAN-aware */
1837 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1838 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1839 MT7530_VLAN_ACC_TAGGED);
1841 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1845 mutex_unlock(&priv->reg_mutex);
1851 mt7530_port_vlan_del(struct dsa_switch *ds, int port,
1852 const struct switchdev_obj_port_vlan *vlan)
1854 struct mt7530_hw_vlan_entry target_entry;
1855 struct mt7530_priv *priv = ds->priv;
1857 mutex_lock(&priv->reg_mutex);
1859 mt7530_hw_vlan_entry_init(&target_entry, port, 0);
1860 mt7530_hw_vlan_update(priv, vlan->vid, &target_entry,
1861 mt7530_hw_vlan_del);
1863 /* PVID is being restored to the default whenever the PVID port
1864 * is being removed from the VLAN.
1866 if (priv->ports[port].pvid == vlan->vid) {
1867 priv->ports[port].pvid = G0_PORT_VID_DEF;
1869 /* Only accept tagged frames if the port is VLAN-aware */
1870 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1871 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1872 MT7530_VLAN_ACC_TAGGED);
1874 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1879 mutex_unlock(&priv->reg_mutex);
1884 static int mt753x_mirror_port_get(unsigned int id, u32 val)
1886 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_GET(val) :
1890 static int mt753x_mirror_port_set(unsigned int id, u32 val)
1892 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_SET(val) :
1896 static int mt753x_port_mirror_add(struct dsa_switch *ds, int port,
1897 struct dsa_mall_mirror_tc_entry *mirror,
1898 bool ingress, struct netlink_ext_ack *extack)
1900 struct mt7530_priv *priv = ds->priv;
1904 /* Check for existent entry */
1905 if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
1908 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1910 /* MT7530 only supports one monitor port */
1911 monitor_port = mt753x_mirror_port_get(priv->id, val);
1912 if (val & MT753X_MIRROR_EN(priv->id) &&
1913 monitor_port != mirror->to_local_port)
1916 val |= MT753X_MIRROR_EN(priv->id);
1917 val &= ~MT753X_MIRROR_MASK(priv->id);
1918 val |= mt753x_mirror_port_set(priv->id, mirror->to_local_port);
1919 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1921 val = mt7530_read(priv, MT7530_PCR_P(port));
1924 priv->mirror_rx |= BIT(port);
1927 priv->mirror_tx |= BIT(port);
1929 mt7530_write(priv, MT7530_PCR_P(port), val);
1934 static void mt753x_port_mirror_del(struct dsa_switch *ds, int port,
1935 struct dsa_mall_mirror_tc_entry *mirror)
1937 struct mt7530_priv *priv = ds->priv;
1940 val = mt7530_read(priv, MT7530_PCR_P(port));
1941 if (mirror->ingress) {
1942 val &= ~PORT_RX_MIR;
1943 priv->mirror_rx &= ~BIT(port);
1945 val &= ~PORT_TX_MIR;
1946 priv->mirror_tx &= ~BIT(port);
1948 mt7530_write(priv, MT7530_PCR_P(port), val);
1950 if (!priv->mirror_rx && !priv->mirror_tx) {
1951 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1952 val &= ~MT753X_MIRROR_EN(priv->id);
1953 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1957 static enum dsa_tag_protocol
1958 mtk_get_tag_protocol(struct dsa_switch *ds, int port,
1959 enum dsa_tag_protocol mp)
1961 return DSA_TAG_PROTO_MTK;
1964 #ifdef CONFIG_GPIOLIB
1966 mt7530_gpio_to_bit(unsigned int offset)
1968 /* Map GPIO offset to register bit
1969 * [ 2: 0] port 0 LED 0..2 as GPIO 0..2
1970 * [ 6: 4] port 1 LED 0..2 as GPIO 3..5
1971 * [10: 8] port 2 LED 0..2 as GPIO 6..8
1972 * [14:12] port 3 LED 0..2 as GPIO 9..11
1973 * [18:16] port 4 LED 0..2 as GPIO 12..14
1975 return BIT(offset + offset / 3);
1979 mt7530_gpio_get(struct gpio_chip *gc, unsigned int offset)
1981 struct mt7530_priv *priv = gpiochip_get_data(gc);
1982 u32 bit = mt7530_gpio_to_bit(offset);
1984 return !!(mt7530_read(priv, MT7530_LED_GPIO_DATA) & bit);
1988 mt7530_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
1990 struct mt7530_priv *priv = gpiochip_get_data(gc);
1991 u32 bit = mt7530_gpio_to_bit(offset);
1994 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
1996 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
2000 mt7530_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
2002 struct mt7530_priv *priv = gpiochip_get_data(gc);
2003 u32 bit = mt7530_gpio_to_bit(offset);
2005 return (mt7530_read(priv, MT7530_LED_GPIO_DIR) & bit) ?
2006 GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
2010 mt7530_gpio_direction_input(struct gpio_chip *gc, unsigned int offset)
2012 struct mt7530_priv *priv = gpiochip_get_data(gc);
2013 u32 bit = mt7530_gpio_to_bit(offset);
2015 mt7530_clear(priv, MT7530_LED_GPIO_OE, bit);
2016 mt7530_clear(priv, MT7530_LED_GPIO_DIR, bit);
2022 mt7530_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value)
2024 struct mt7530_priv *priv = gpiochip_get_data(gc);
2025 u32 bit = mt7530_gpio_to_bit(offset);
2027 mt7530_set(priv, MT7530_LED_GPIO_DIR, bit);
2030 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
2032 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
2034 mt7530_set(priv, MT7530_LED_GPIO_OE, bit);
2040 mt7530_setup_gpio(struct mt7530_priv *priv)
2042 struct device *dev = priv->dev;
2043 struct gpio_chip *gc;
2045 gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
2049 mt7530_write(priv, MT7530_LED_GPIO_OE, 0);
2050 mt7530_write(priv, MT7530_LED_GPIO_DIR, 0);
2051 mt7530_write(priv, MT7530_LED_IO_MODE, 0);
2053 gc->label = "mt7530";
2055 gc->owner = THIS_MODULE;
2056 gc->get_direction = mt7530_gpio_get_direction;
2057 gc->direction_input = mt7530_gpio_direction_input;
2058 gc->direction_output = mt7530_gpio_direction_output;
2059 gc->get = mt7530_gpio_get;
2060 gc->set = mt7530_gpio_set;
2063 gc->can_sleep = true;
2065 return devm_gpiochip_add_data(dev, gc, priv);
2067 #endif /* CONFIG_GPIOLIB */
2070 mt7530_irq_thread_fn(int irq, void *dev_id)
2072 struct mt7530_priv *priv = dev_id;
2073 bool handled = false;
2077 mt7530_mutex_lock(priv);
2078 val = mt7530_mii_read(priv, MT7530_SYS_INT_STS);
2079 mt7530_mii_write(priv, MT7530_SYS_INT_STS, val);
2080 mt7530_mutex_unlock(priv);
2082 for (p = 0; p < MT7530_NUM_PHYS; p++) {
2086 irq = irq_find_mapping(priv->irq_domain, p);
2087 handle_nested_irq(irq);
2092 return IRQ_RETVAL(handled);
2096 mt7530_irq_mask(struct irq_data *d)
2098 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
2100 priv->irq_enable &= ~BIT(d->hwirq);
2104 mt7530_irq_unmask(struct irq_data *d)
2106 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
2108 priv->irq_enable |= BIT(d->hwirq);
2112 mt7530_irq_bus_lock(struct irq_data *d)
2114 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
2116 mt7530_mutex_lock(priv);
2120 mt7530_irq_bus_sync_unlock(struct irq_data *d)
2122 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
2124 mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
2125 mt7530_mutex_unlock(priv);
2128 static struct irq_chip mt7530_irq_chip = {
2129 .name = KBUILD_MODNAME,
2130 .irq_mask = mt7530_irq_mask,
2131 .irq_unmask = mt7530_irq_unmask,
2132 .irq_bus_lock = mt7530_irq_bus_lock,
2133 .irq_bus_sync_unlock = mt7530_irq_bus_sync_unlock,
2137 mt7530_irq_map(struct irq_domain *domain, unsigned int irq,
2138 irq_hw_number_t hwirq)
2140 irq_set_chip_data(irq, domain->host_data);
2141 irq_set_chip_and_handler(irq, &mt7530_irq_chip, handle_simple_irq);
2142 irq_set_nested_thread(irq, true);
2143 irq_set_noprobe(irq);
2148 static const struct irq_domain_ops mt7530_irq_domain_ops = {
2149 .map = mt7530_irq_map,
2150 .xlate = irq_domain_xlate_onecell,
2154 mt7988_irq_mask(struct irq_data *d)
2156 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
2158 priv->irq_enable &= ~BIT(d->hwirq);
2159 mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
2163 mt7988_irq_unmask(struct irq_data *d)
2165 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
2167 priv->irq_enable |= BIT(d->hwirq);
2168 mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
2171 static struct irq_chip mt7988_irq_chip = {
2172 .name = KBUILD_MODNAME,
2173 .irq_mask = mt7988_irq_mask,
2174 .irq_unmask = mt7988_irq_unmask,
2178 mt7988_irq_map(struct irq_domain *domain, unsigned int irq,
2179 irq_hw_number_t hwirq)
2181 irq_set_chip_data(irq, domain->host_data);
2182 irq_set_chip_and_handler(irq, &mt7988_irq_chip, handle_simple_irq);
2183 irq_set_nested_thread(irq, true);
2184 irq_set_noprobe(irq);
2189 static const struct irq_domain_ops mt7988_irq_domain_ops = {
2190 .map = mt7988_irq_map,
2191 .xlate = irq_domain_xlate_onecell,
2195 mt7530_setup_mdio_irq(struct mt7530_priv *priv)
2197 struct dsa_switch *ds = priv->ds;
2200 for (p = 0; p < MT7530_NUM_PHYS; p++) {
2201 if (BIT(p) & ds->phys_mii_mask) {
2204 irq = irq_create_mapping(priv->irq_domain, p);
2205 ds->user_mii_bus->irq[p] = irq;
2211 mt7530_setup_irq(struct mt7530_priv *priv)
2213 struct device *dev = priv->dev;
2214 struct device_node *np = dev->of_node;
2217 if (!of_property_read_bool(np, "interrupt-controller")) {
2218 dev_info(dev, "no interrupt support\n");
2222 priv->irq = of_irq_get(np, 0);
2223 if (priv->irq <= 0) {
2224 dev_err(dev, "failed to get parent IRQ: %d\n", priv->irq);
2225 return priv->irq ? : -EINVAL;
2228 if (priv->id == ID_MT7988)
2229 priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
2230 &mt7988_irq_domain_ops,
2233 priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
2234 &mt7530_irq_domain_ops,
2237 if (!priv->irq_domain) {
2238 dev_err(dev, "failed to create IRQ domain\n");
2242 /* This register must be set for MT7530 to properly fire interrupts */
2243 if (priv->id == ID_MT7530 || priv->id == ID_MT7621)
2244 mt7530_set(priv, MT7530_TOP_SIG_CTRL, TOP_SIG_CTRL_NORMAL);
2246 ret = request_threaded_irq(priv->irq, NULL, mt7530_irq_thread_fn,
2247 IRQF_ONESHOT, KBUILD_MODNAME, priv);
2249 irq_domain_remove(priv->irq_domain);
2250 dev_err(dev, "failed to request IRQ: %d\n", ret);
2258 mt7530_free_mdio_irq(struct mt7530_priv *priv)
2262 for (p = 0; p < MT7530_NUM_PHYS; p++) {
2263 if (BIT(p) & priv->ds->phys_mii_mask) {
2266 irq = irq_find_mapping(priv->irq_domain, p);
2267 irq_dispose_mapping(irq);
2273 mt7530_free_irq_common(struct mt7530_priv *priv)
2275 free_irq(priv->irq, priv);
2276 irq_domain_remove(priv->irq_domain);
2280 mt7530_free_irq(struct mt7530_priv *priv)
2282 struct device_node *mnp, *np = priv->dev->of_node;
2284 mnp = of_get_child_by_name(np, "mdio");
2286 mt7530_free_mdio_irq(priv);
2289 mt7530_free_irq_common(priv);
2293 mt7530_setup_mdio(struct mt7530_priv *priv)
2295 struct device_node *mnp, *np = priv->dev->of_node;
2296 struct dsa_switch *ds = priv->ds;
2297 struct device *dev = priv->dev;
2298 struct mii_bus *bus;
2302 mnp = of_get_child_by_name(np, "mdio");
2304 if (mnp && !of_device_is_available(mnp))
2307 bus = devm_mdiobus_alloc(dev);
2314 ds->user_mii_bus = bus;
2317 bus->name = KBUILD_MODNAME "-mii";
2318 snprintf(bus->id, MII_BUS_ID_SIZE, KBUILD_MODNAME "-%d", idx++);
2319 bus->read = mt753x_phy_read_c22;
2320 bus->write = mt753x_phy_write_c22;
2321 bus->read_c45 = mt753x_phy_read_c45;
2322 bus->write_c45 = mt753x_phy_write_c45;
2324 bus->phy_mask = ~ds->phys_mii_mask;
2326 if (priv->irq && !mnp)
2327 mt7530_setup_mdio_irq(priv);
2329 ret = devm_of_mdiobus_register(dev, bus, mnp);
2331 dev_err(dev, "failed to register MDIO bus: %d\n", ret);
2332 if (priv->irq && !mnp)
2333 mt7530_free_mdio_irq(priv);
2342 mt7530_setup(struct dsa_switch *ds)
2344 struct mt7530_priv *priv = ds->priv;
2345 struct device_node *dn = NULL;
2346 struct device_node *phy_node;
2347 struct device_node *mac_np;
2348 struct mt7530_dummy_poll p;
2349 phy_interface_t interface;
2350 struct dsa_port *cpu_dp;
2354 /* The parent node of conduit netdev which holds the common system
2355 * controller also is the container for two GMACs nodes representing
2356 * as two netdev instances.
2358 dsa_switch_for_each_cpu_port(cpu_dp, ds) {
2359 dn = cpu_dp->conduit->dev.of_node->parent;
2360 /* It doesn't matter which CPU port is found first,
2361 * their conduits should share the same parent OF node
2367 dev_err(ds->dev, "parent OF node of DSA conduit not found");
2371 ds->assisted_learning_on_cpu_port = true;
2372 ds->mtu_enforcement_ingress = true;
2374 if (priv->id == ID_MT7530) {
2375 regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
2376 ret = regulator_enable(priv->core_pwr);
2379 "Failed to enable core power: %d\n", ret);
2383 regulator_set_voltage(priv->io_pwr, 3300000, 3300000);
2384 ret = regulator_enable(priv->io_pwr);
2386 dev_err(priv->dev, "Failed to enable io pwr: %d\n",
2392 /* Reset whole chip through gpio pin or memory-mapped registers for
2393 * different type of hardware
2396 reset_control_assert(priv->rstc);
2397 usleep_range(5000, 5100);
2398 reset_control_deassert(priv->rstc);
2400 gpiod_set_value_cansleep(priv->reset, 0);
2401 usleep_range(5000, 5100);
2402 gpiod_set_value_cansleep(priv->reset, 1);
2405 /* Waiting for MT7530 got to stable */
2406 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
2407 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
2410 dev_err(priv->dev, "reset timeout\n");
2414 id = mt7530_read(priv, MT7530_CREV);
2415 id >>= CHIP_NAME_SHIFT;
2416 if (id != MT7530_ID) {
2417 dev_err(priv->dev, "chip %x can't be supported\n", id);
2421 if ((val & HWTRAP_XTAL_MASK) == HWTRAP_XTAL_20MHZ) {
2423 "MT7530 with a 20MHz XTAL is not supported!\n");
2427 /* Reset the switch through internal reset */
2428 mt7530_write(priv, MT7530_SYS_CTRL,
2429 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
2432 /* Lower Tx driving for TRGMII path */
2433 for (i = 0; i < NUM_TRGMII_CTRL; i++)
2434 mt7530_write(priv, MT7530_TRGMII_TD_ODT(i),
2435 TD_DM_DRVP(8) | TD_DM_DRVN(8));
2437 for (i = 0; i < NUM_TRGMII_CTRL; i++)
2438 mt7530_rmw(priv, MT7530_TRGMII_RD(i),
2439 RD_TAP_MASK, RD_TAP(16));
2442 val = mt7530_read(priv, MT7530_MHWTRAP);
2443 val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
2444 val |= MHWTRAP_MANUAL;
2445 mt7530_write(priv, MT7530_MHWTRAP, val);
2447 if ((val & HWTRAP_XTAL_MASK) == HWTRAP_XTAL_40MHZ)
2448 mt7530_pll_setup(priv);
2450 mt753x_trap_frames(priv);
2452 /* Enable and reset MIB counters */
2453 mt7530_mib_reset(ds);
2455 for (i = 0; i < MT7530_NUM_PORTS; i++) {
2456 /* Clear link settings and enable force mode to force link down
2457 * on all ports until they're enabled later.
2459 mt7530_rmw(priv, MT7530_PMCR_P(i), PMCR_LINK_SETTINGS_MASK |
2460 PMCR_FORCE_MODE, PMCR_FORCE_MODE);
2462 /* Disable forwarding by default on all ports */
2463 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
2466 /* Disable learning by default on all ports */
2467 mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
2469 if (dsa_is_cpu_port(ds, i)) {
2470 mt753x_cpu_port_enable(ds, i);
2472 mt7530_port_disable(ds, i);
2474 /* Set default PVID to 0 on all user ports */
2475 mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
2478 /* Enable consistent egress tag */
2479 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
2480 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
2483 /* Setup VLAN ID 0 for VLAN-unaware bridges */
2484 ret = mt7530_setup_vlan0(priv);
2489 if (!dsa_is_unused_port(ds, 5)) {
2490 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
2492 /* Scan the ethernet nodes. Look for GMAC1, lookup the used PHY.
2493 * Set priv->p5_intf_sel to the appropriate value if PHY muxing
2496 for_each_child_of_node(dn, mac_np) {
2497 if (!of_device_is_compatible(mac_np,
2498 "mediatek,eth-mac"))
2501 ret = of_property_read_u32(mac_np, "reg", &id);
2502 if (ret < 0 || id != 1)
2505 phy_node = of_parse_phandle(mac_np, "phy-handle", 0);
2509 if (phy_node->parent == priv->dev->of_node->parent) {
2510 ret = of_get_phy_mode(mac_np, &interface);
2511 if (ret && ret != -ENODEV) {
2512 of_node_put(mac_np);
2513 of_node_put(phy_node);
2516 id = of_mdio_parse_addr(ds->dev, phy_node);
2518 priv->p5_intf_sel = P5_INTF_SEL_PHY_P0;
2520 priv->p5_intf_sel = P5_INTF_SEL_PHY_P4;
2522 of_node_put(mac_np);
2523 of_node_put(phy_node);
2527 if (priv->p5_intf_sel == P5_INTF_SEL_PHY_P0 ||
2528 priv->p5_intf_sel == P5_INTF_SEL_PHY_P4)
2529 mt7530_setup_port5(ds, interface);
2532 #ifdef CONFIG_GPIOLIB
2533 if (of_property_read_bool(priv->dev->of_node, "gpio-controller")) {
2534 ret = mt7530_setup_gpio(priv);
2538 #endif /* CONFIG_GPIOLIB */
2540 /* Flush the FDB table */
2541 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
2549 mt7531_setup_common(struct dsa_switch *ds)
2551 struct mt7530_priv *priv = ds->priv;
2554 mt753x_trap_frames(priv);
2556 /* Enable and reset MIB counters */
2557 mt7530_mib_reset(ds);
2559 /* Disable flooding on all ports */
2560 mt7530_clear(priv, MT7530_MFC, BC_FFP_MASK | UNM_FFP_MASK |
2563 for (i = 0; i < MT7530_NUM_PORTS; i++) {
2564 /* Clear link settings and enable force mode to force link down
2565 * on all ports until they're enabled later.
2567 mt7530_rmw(priv, MT7530_PMCR_P(i), PMCR_LINK_SETTINGS_MASK |
2568 MT7531_FORCE_MODE, MT7531_FORCE_MODE);
2570 /* Disable forwarding by default on all ports */
2571 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
2574 /* Disable learning by default on all ports */
2575 mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
2577 mt7530_set(priv, MT7531_DBG_CNT(i), MT7531_DIS_CLR);
2579 if (dsa_is_cpu_port(ds, i)) {
2580 mt753x_cpu_port_enable(ds, i);
2582 mt7530_port_disable(ds, i);
2584 /* Set default PVID to 0 on all user ports */
2585 mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
2589 /* Enable consistent egress tag */
2590 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
2591 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
2594 /* Flush the FDB table */
2595 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
2603 mt7531_setup(struct dsa_switch *ds)
2605 struct mt7530_priv *priv = ds->priv;
2606 struct mt7530_dummy_poll p;
2610 /* Reset whole chip through gpio pin or memory-mapped registers for
2611 * different type of hardware
2614 reset_control_assert(priv->rstc);
2615 usleep_range(5000, 5100);
2616 reset_control_deassert(priv->rstc);
2618 gpiod_set_value_cansleep(priv->reset, 0);
2619 usleep_range(5000, 5100);
2620 gpiod_set_value_cansleep(priv->reset, 1);
2623 /* Waiting for MT7530 got to stable */
2624 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
2625 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
2628 dev_err(priv->dev, "reset timeout\n");
2632 id = mt7530_read(priv, MT7531_CREV);
2633 id >>= CHIP_NAME_SHIFT;
2635 if (id != MT7531_ID) {
2636 dev_err(priv->dev, "chip %x can't be supported\n", id);
2640 /* MT7531AE has got two SGMII units. One for port 5, one for port 6.
2641 * MT7531BE has got only one SGMII unit which is for port 6.
2643 val = mt7530_read(priv, MT7531_TOP_SIG_SR);
2644 priv->p5_sgmii = !!(val & PAD_DUAL_SGMII_EN);
2646 /* Force link down on all ports before internal reset */
2647 for (i = 0; i < MT7530_NUM_PORTS; i++)
2648 mt7530_write(priv, MT7530_PMCR_P(i), MT7531_FORCE_LNK);
2650 /* Reset the switch through internal reset */
2651 mt7530_write(priv, MT7530_SYS_CTRL, SYS_CTRL_SW_RST | SYS_CTRL_REG_RST);
2653 if (!priv->p5_sgmii) {
2654 mt7531_pll_setup(priv);
2656 /* Let ds->user_mii_bus be able to access external phy. */
2657 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK,
2658 MT7531_EXT_P_MDC_11);
2659 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK,
2660 MT7531_EXT_P_MDIO_12);
2663 if (!dsa_is_unused_port(ds, 5))
2664 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
2666 mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK,
2667 MT7531_GPIO0_INTERRUPT);
2669 /* Enable Energy-Efficient Ethernet (EEE) and PHY core PLL, since
2670 * phy_device has not yet been created provided for
2671 * phy_[read,write]_mmd_indirect is called, we provide our own
2672 * mt7531_ind_mmd_phy_[read,write] to complete this function.
2674 val = mt7531_ind_c45_phy_read(priv, MT753X_CTRL_PHY_ADDR,
2675 MDIO_MMD_VEND2, CORE_PLL_GROUP4);
2676 val |= MT7531_RG_SYSPLL_DMY2 | MT7531_PHY_PLL_BYPASS_MODE;
2677 val &= ~MT7531_PHY_PLL_OFF;
2678 mt7531_ind_c45_phy_write(priv, MT753X_CTRL_PHY_ADDR, MDIO_MMD_VEND2,
2679 CORE_PLL_GROUP4, val);
2681 /* Disable EEE advertisement on the switch PHYs. */
2682 for (i = MT753X_CTRL_PHY_ADDR;
2683 i < MT753X_CTRL_PHY_ADDR + MT7530_NUM_PHYS; i++) {
2684 mt7531_ind_c45_phy_write(priv, i, MDIO_MMD_AN, MDIO_AN_EEE_ADV,
2688 mt7531_setup_common(ds);
2690 /* Setup VLAN ID 0 for VLAN-unaware bridges */
2691 ret = mt7530_setup_vlan0(priv);
2695 ds->assisted_learning_on_cpu_port = true;
2696 ds->mtu_enforcement_ingress = true;
2701 static void mt7530_mac_port_get_caps(struct dsa_switch *ds, int port,
2702 struct phylink_config *config)
2705 /* Ports which are connected to switch PHYs. There is no MII pinout. */
2707 __set_bit(PHY_INTERFACE_MODE_GMII,
2708 config->supported_interfaces);
2711 /* Port 5 supports rgmii with delays, mii, and gmii. */
2713 phy_interface_set_rgmii(config->supported_interfaces);
2714 __set_bit(PHY_INTERFACE_MODE_MII,
2715 config->supported_interfaces);
2716 __set_bit(PHY_INTERFACE_MODE_GMII,
2717 config->supported_interfaces);
2720 /* Port 6 supports rgmii and trgmii. */
2722 __set_bit(PHY_INTERFACE_MODE_RGMII,
2723 config->supported_interfaces);
2724 __set_bit(PHY_INTERFACE_MODE_TRGMII,
2725 config->supported_interfaces);
2730 static void mt7531_mac_port_get_caps(struct dsa_switch *ds, int port,
2731 struct phylink_config *config)
2733 struct mt7530_priv *priv = ds->priv;
2736 /* Ports which are connected to switch PHYs. There is no MII pinout. */
2738 __set_bit(PHY_INTERFACE_MODE_GMII,
2739 config->supported_interfaces);
2742 /* Port 5 supports rgmii with delays on MT7531BE, sgmii/802.3z on
2746 if (!priv->p5_sgmii) {
2747 phy_interface_set_rgmii(config->supported_interfaces);
2752 /* Port 6 supports sgmii/802.3z. */
2754 __set_bit(PHY_INTERFACE_MODE_SGMII,
2755 config->supported_interfaces);
2756 __set_bit(PHY_INTERFACE_MODE_1000BASEX,
2757 config->supported_interfaces);
2758 __set_bit(PHY_INTERFACE_MODE_2500BASEX,
2759 config->supported_interfaces);
2761 config->mac_capabilities |= MAC_2500FD;
2766 static void mt7988_mac_port_get_caps(struct dsa_switch *ds, int port,
2767 struct phylink_config *config)
2770 /* Ports which are connected to switch PHYs. There is no MII pinout. */
2772 __set_bit(PHY_INTERFACE_MODE_INTERNAL,
2773 config->supported_interfaces);
2776 /* Port 6 is connected to SoC's XGMII MAC. There is no MII pinout. */
2778 __set_bit(PHY_INTERFACE_MODE_INTERNAL,
2779 config->supported_interfaces);
2780 config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
2786 mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2787 phy_interface_t interface)
2789 struct mt7530_priv *priv = ds->priv;
2792 mt7530_setup_port5(priv->ds, interface);
2794 mt7530_setup_port6(priv->ds, interface);
2797 static void mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port,
2798 phy_interface_t interface,
2799 struct phy_device *phydev)
2803 val = mt7530_read(priv, MT7531_CLKGEN_CTRL);
2805 val &= ~GP_MODE_MASK;
2806 val |= GP_MODE(MT7531_GP_MODE_RGMII);
2807 val &= ~CLK_SKEW_IN_MASK;
2808 val |= CLK_SKEW_IN(MT7531_CLK_SKEW_NO_CHG);
2809 val &= ~CLK_SKEW_OUT_MASK;
2810 val |= CLK_SKEW_OUT(MT7531_CLK_SKEW_NO_CHG);
2811 val |= TXCLK_NO_REVERSE | RXCLK_NO_DELAY;
2813 /* Do not adjust rgmii delay when vendor phy driver presents. */
2814 if (!phydev || phy_driver_is_genphy(phydev)) {
2815 val &= ~(TXCLK_NO_REVERSE | RXCLK_NO_DELAY);
2816 switch (interface) {
2817 case PHY_INTERFACE_MODE_RGMII:
2818 val |= TXCLK_NO_REVERSE;
2819 val |= RXCLK_NO_DELAY;
2821 case PHY_INTERFACE_MODE_RGMII_RXID:
2822 val |= TXCLK_NO_REVERSE;
2824 case PHY_INTERFACE_MODE_RGMII_TXID:
2825 val |= RXCLK_NO_DELAY;
2827 case PHY_INTERFACE_MODE_RGMII_ID:
2834 mt7530_write(priv, MT7531_CLKGEN_CTRL, val);
2838 mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2839 phy_interface_t interface)
2841 struct mt7530_priv *priv = ds->priv;
2842 struct phy_device *phydev;
2843 struct dsa_port *dp;
2845 if (phy_interface_mode_is_rgmii(interface)) {
2846 dp = dsa_to_port(ds, port);
2847 phydev = dp->user->phydev;
2848 mt7531_rgmii_setup(priv, port, interface, phydev);
2852 static struct phylink_pcs *
2853 mt753x_phylink_mac_select_pcs(struct dsa_switch *ds, int port,
2854 phy_interface_t interface)
2856 struct mt7530_priv *priv = ds->priv;
2858 switch (interface) {
2859 case PHY_INTERFACE_MODE_TRGMII:
2860 return &priv->pcs[port].pcs;
2861 case PHY_INTERFACE_MODE_SGMII:
2862 case PHY_INTERFACE_MODE_1000BASEX:
2863 case PHY_INTERFACE_MODE_2500BASEX:
2864 return priv->ports[port].sgmii_pcs;
2871 mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2872 const struct phylink_link_state *state)
2874 struct mt7530_priv *priv = ds->priv;
2876 if ((port == 5 || port == 6) && priv->info->mac_port_config)
2877 priv->info->mac_port_config(ds, port, mode, state->interface);
2879 /* Are we connected to external phy */
2880 if (port == 5 && dsa_is_user_port(ds, 5))
2881 mt7530_set(priv, MT7530_PMCR_P(port), PMCR_EXT_PHY);
2884 static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
2886 phy_interface_t interface)
2888 struct mt7530_priv *priv = ds->priv;
2890 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
2893 static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port,
2895 phy_interface_t interface,
2896 struct phy_device *phydev,
2897 int speed, int duplex,
2898 bool tx_pause, bool rx_pause)
2900 struct mt7530_priv *priv = ds->priv;
2903 mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK;
2909 mcr |= PMCR_FORCE_SPEED_1000;
2912 mcr |= PMCR_FORCE_SPEED_100;
2915 if (duplex == DUPLEX_FULL) {
2916 mcr |= PMCR_FORCE_FDX;
2918 mcr |= PMCR_TX_FC_EN;
2920 mcr |= PMCR_RX_FC_EN;
2923 if (mode == MLO_AN_PHY && phydev && phy_init_eee(phydev, false) >= 0) {
2927 mcr |= PMCR_FORCE_EEE1G;
2930 mcr |= PMCR_FORCE_EEE100;
2935 mt7530_set(priv, MT7530_PMCR_P(port), mcr);
2938 static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port,
2939 struct phylink_config *config)
2941 struct mt7530_priv *priv = ds->priv;
2943 /* This switch only supports full-duplex at 1Gbps */
2944 config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
2945 MAC_10 | MAC_100 | MAC_1000FD;
2947 priv->info->mac_port_get_caps(ds, port, config);
2950 static int mt753x_pcs_validate(struct phylink_pcs *pcs,
2951 unsigned long *supported,
2952 const struct phylink_link_state *state)
2954 /* Autonegotiation is not supported in TRGMII nor 802.3z modes */
2955 if (state->interface == PHY_INTERFACE_MODE_TRGMII ||
2956 phy_interface_mode_is_8023z(state->interface))
2957 phylink_clear(supported, Autoneg);
2962 static void mt7530_pcs_get_state(struct phylink_pcs *pcs,
2963 struct phylink_link_state *state)
2965 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
2966 int port = pcs_to_mt753x_pcs(pcs)->port;
2969 pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
2971 state->link = (pmsr & PMSR_LINK);
2972 state->an_complete = state->link;
2973 state->duplex = !!(pmsr & PMSR_DPX);
2975 switch (pmsr & PMSR_SPEED_MASK) {
2977 state->speed = SPEED_10;
2979 case PMSR_SPEED_100:
2980 state->speed = SPEED_100;
2982 case PMSR_SPEED_1000:
2983 state->speed = SPEED_1000;
2986 state->speed = SPEED_UNKNOWN;
2990 state->pause &= ~(MLO_PAUSE_RX | MLO_PAUSE_TX);
2991 if (pmsr & PMSR_RX_FC)
2992 state->pause |= MLO_PAUSE_RX;
2993 if (pmsr & PMSR_TX_FC)
2994 state->pause |= MLO_PAUSE_TX;
2997 static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
2998 phy_interface_t interface,
2999 const unsigned long *advertising,
3000 bool permit_pause_to_mac)
3005 static void mt7530_pcs_an_restart(struct phylink_pcs *pcs)
3009 static const struct phylink_pcs_ops mt7530_pcs_ops = {
3010 .pcs_validate = mt753x_pcs_validate,
3011 .pcs_get_state = mt7530_pcs_get_state,
3012 .pcs_config = mt753x_pcs_config,
3013 .pcs_an_restart = mt7530_pcs_an_restart,
3017 mt753x_setup(struct dsa_switch *ds)
3019 struct mt7530_priv *priv = ds->priv;
3020 int ret = priv->info->sw_setup(ds);
3026 ret = mt7530_setup_irq(priv);
3030 ret = mt7530_setup_mdio(priv);
3031 if (ret && priv->irq)
3032 mt7530_free_irq_common(priv);
3034 /* Initialise the PCS devices */
3035 for (i = 0; i < priv->ds->num_ports; i++) {
3036 priv->pcs[i].pcs.ops = priv->info->pcs_ops;
3037 priv->pcs[i].pcs.neg_mode = true;
3038 priv->pcs[i].priv = priv;
3039 priv->pcs[i].port = i;
3042 if (priv->create_sgmii) {
3043 ret = priv->create_sgmii(priv);
3044 if (ret && priv->irq)
3045 mt7530_free_irq(priv);
3051 static int mt753x_get_mac_eee(struct dsa_switch *ds, int port,
3052 struct ethtool_keee *e)
3054 struct mt7530_priv *priv = ds->priv;
3055 u32 eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
3057 e->tx_lpi_enabled = !(eeecr & LPI_MODE_EN);
3058 e->tx_lpi_timer = GET_LPI_THRESH(eeecr);
3063 static int mt753x_set_mac_eee(struct dsa_switch *ds, int port,
3064 struct ethtool_keee *e)
3066 struct mt7530_priv *priv = ds->priv;
3067 u32 set, mask = LPI_THRESH_MASK | LPI_MODE_EN;
3069 if (e->tx_lpi_timer > 0xFFF)
3072 set = SET_LPI_THRESH(e->tx_lpi_timer);
3073 if (!e->tx_lpi_enabled)
3074 /* Force LPI Mode without a delay */
3076 mt7530_rmw(priv, MT7530_PMEEECR_P(port), mask, set);
3082 mt753x_conduit_state_change(struct dsa_switch *ds,
3083 const struct net_device *conduit,
3086 struct dsa_port *cpu_dp = conduit->dsa_ptr;
3087 struct mt7530_priv *priv = ds->priv;
3091 /* Set the CPU port to trap frames to for MT7530. Trapped frames will be
3092 * forwarded to the numerically smallest CPU port whose conduit
3095 if (priv->id != ID_MT7530 && priv->id != ID_MT7621)
3098 mask = BIT(cpu_dp->index);
3101 priv->active_cpu_ports |= mask;
3103 priv->active_cpu_ports &= ~mask;
3105 if (priv->active_cpu_ports)
3106 val = CPU_EN | CPU_PORT(__ffs(priv->active_cpu_ports));
3108 mt7530_rmw(priv, MT7530_MFC, CPU_EN | CPU_PORT_MASK, val);
3111 static int mt7988_setup(struct dsa_switch *ds)
3113 struct mt7530_priv *priv = ds->priv;
3115 /* Reset the switch */
3116 reset_control_assert(priv->rstc);
3117 usleep_range(20, 50);
3118 reset_control_deassert(priv->rstc);
3119 usleep_range(20, 50);
3121 /* Reset the switch PHYs */
3122 mt7530_write(priv, MT7530_SYS_CTRL, SYS_CTRL_PHY_RST);
3124 return mt7531_setup_common(ds);
3127 const struct dsa_switch_ops mt7530_switch_ops = {
3128 .get_tag_protocol = mtk_get_tag_protocol,
3129 .setup = mt753x_setup,
3130 .preferred_default_local_cpu_port = mt753x_preferred_default_local_cpu_port,
3131 .get_strings = mt7530_get_strings,
3132 .get_ethtool_stats = mt7530_get_ethtool_stats,
3133 .get_sset_count = mt7530_get_sset_count,
3134 .set_ageing_time = mt7530_set_ageing_time,
3135 .port_enable = mt7530_port_enable,
3136 .port_disable = mt7530_port_disable,
3137 .port_change_mtu = mt7530_port_change_mtu,
3138 .port_max_mtu = mt7530_port_max_mtu,
3139 .port_stp_state_set = mt7530_stp_state_set,
3140 .port_pre_bridge_flags = mt7530_port_pre_bridge_flags,
3141 .port_bridge_flags = mt7530_port_bridge_flags,
3142 .port_bridge_join = mt7530_port_bridge_join,
3143 .port_bridge_leave = mt7530_port_bridge_leave,
3144 .port_fdb_add = mt7530_port_fdb_add,
3145 .port_fdb_del = mt7530_port_fdb_del,
3146 .port_fdb_dump = mt7530_port_fdb_dump,
3147 .port_mdb_add = mt7530_port_mdb_add,
3148 .port_mdb_del = mt7530_port_mdb_del,
3149 .port_vlan_filtering = mt7530_port_vlan_filtering,
3150 .port_vlan_add = mt7530_port_vlan_add,
3151 .port_vlan_del = mt7530_port_vlan_del,
3152 .port_mirror_add = mt753x_port_mirror_add,
3153 .port_mirror_del = mt753x_port_mirror_del,
3154 .phylink_get_caps = mt753x_phylink_get_caps,
3155 .phylink_mac_select_pcs = mt753x_phylink_mac_select_pcs,
3156 .phylink_mac_config = mt753x_phylink_mac_config,
3157 .phylink_mac_link_down = mt753x_phylink_mac_link_down,
3158 .phylink_mac_link_up = mt753x_phylink_mac_link_up,
3159 .get_mac_eee = mt753x_get_mac_eee,
3160 .set_mac_eee = mt753x_set_mac_eee,
3161 .conduit_state_change = mt753x_conduit_state_change,
3163 EXPORT_SYMBOL_GPL(mt7530_switch_ops);
3165 const struct mt753x_info mt753x_table[] = {
3168 .pcs_ops = &mt7530_pcs_ops,
3169 .sw_setup = mt7530_setup,
3170 .phy_read_c22 = mt7530_phy_read_c22,
3171 .phy_write_c22 = mt7530_phy_write_c22,
3172 .phy_read_c45 = mt7530_phy_read_c45,
3173 .phy_write_c45 = mt7530_phy_write_c45,
3174 .mac_port_get_caps = mt7530_mac_port_get_caps,
3175 .mac_port_config = mt7530_mac_config,
3179 .pcs_ops = &mt7530_pcs_ops,
3180 .sw_setup = mt7530_setup,
3181 .phy_read_c22 = mt7530_phy_read_c22,
3182 .phy_write_c22 = mt7530_phy_write_c22,
3183 .phy_read_c45 = mt7530_phy_read_c45,
3184 .phy_write_c45 = mt7530_phy_write_c45,
3185 .mac_port_get_caps = mt7530_mac_port_get_caps,
3186 .mac_port_config = mt7530_mac_config,
3190 .pcs_ops = &mt7530_pcs_ops,
3191 .sw_setup = mt7531_setup,
3192 .phy_read_c22 = mt7531_ind_c22_phy_read,
3193 .phy_write_c22 = mt7531_ind_c22_phy_write,
3194 .phy_read_c45 = mt7531_ind_c45_phy_read,
3195 .phy_write_c45 = mt7531_ind_c45_phy_write,
3196 .mac_port_get_caps = mt7531_mac_port_get_caps,
3197 .mac_port_config = mt7531_mac_config,
3201 .pcs_ops = &mt7530_pcs_ops,
3202 .sw_setup = mt7988_setup,
3203 .phy_read_c22 = mt7531_ind_c22_phy_read,
3204 .phy_write_c22 = mt7531_ind_c22_phy_write,
3205 .phy_read_c45 = mt7531_ind_c45_phy_read,
3206 .phy_write_c45 = mt7531_ind_c45_phy_write,
3207 .mac_port_get_caps = mt7988_mac_port_get_caps,
3210 EXPORT_SYMBOL_GPL(mt753x_table);
3213 mt7530_probe_common(struct mt7530_priv *priv)
3215 struct device *dev = priv->dev;
3217 priv->ds = devm_kzalloc(dev, sizeof(*priv->ds), GFP_KERNEL);
3221 priv->ds->dev = dev;
3222 priv->ds->num_ports = MT7530_NUM_PORTS;
3224 /* Get the hardware identifier from the devicetree node.
3225 * We will need it for some of the clock and regulator setup.
3227 priv->info = of_device_get_match_data(dev);
3231 /* Sanity check if these required device operations are filled
3234 if (!priv->info->sw_setup || !priv->info->phy_read_c22 ||
3235 !priv->info->phy_write_c22 || !priv->info->mac_port_get_caps)
3238 priv->id = priv->info->id;
3240 priv->ds->priv = priv;
3241 priv->ds->ops = &mt7530_switch_ops;
3242 mutex_init(&priv->reg_mutex);
3243 dev_set_drvdata(dev, priv);
3247 EXPORT_SYMBOL_GPL(mt7530_probe_common);
3250 mt7530_remove_common(struct mt7530_priv *priv)
3253 mt7530_free_irq(priv);
3255 dsa_unregister_switch(priv->ds);
3257 mutex_destroy(&priv->reg_mutex);
3259 EXPORT_SYMBOL_GPL(mt7530_remove_common);
3261 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
3262 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch");
3263 MODULE_LICENSE("GPL");