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 core_write(struct mt7530_priv *priv, u32 reg, u32 val)
147 struct mii_bus *bus = priv->bus;
149 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
151 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
153 mutex_unlock(&bus->mdio_lock);
157 core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set)
159 struct mii_bus *bus = priv->bus;
162 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
164 val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2);
167 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
169 mutex_unlock(&bus->mdio_lock);
173 core_set(struct mt7530_priv *priv, u32 reg, u32 val)
175 core_rmw(priv, reg, 0, val);
179 core_clear(struct mt7530_priv *priv, u32 reg, u32 val)
181 core_rmw(priv, reg, val, 0);
185 mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val)
187 struct mii_bus *bus = priv->bus;
191 page = (reg >> 6) & 0x3ff;
192 r = (reg >> 2) & 0xf;
196 /* MT7530 uses 31 as the pseudo port */
197 ret = bus->write(bus, 0x1f, 0x1f, page);
201 ret = bus->write(bus, 0x1f, r, lo);
205 ret = bus->write(bus, 0x1f, 0x10, hi);
209 "failed to write mt7530 register\n");
214 mt7530_mii_read(struct mt7530_priv *priv, u32 reg)
216 struct mii_bus *bus = priv->bus;
220 page = (reg >> 6) & 0x3ff;
221 r = (reg >> 2) & 0xf;
223 /* MT7530 uses 31 as the pseudo port */
224 ret = bus->write(bus, 0x1f, 0x1f, page);
227 "failed to read mt7530 register\n");
231 lo = bus->read(bus, 0x1f, r);
232 hi = bus->read(bus, 0x1f, 0x10);
234 return (hi << 16) | (lo & 0xffff);
238 mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
240 struct mii_bus *bus = priv->bus;
242 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
244 mt7530_mii_write(priv, reg, val);
246 mutex_unlock(&bus->mdio_lock);
250 _mt7530_unlocked_read(struct mt7530_dummy_poll *p)
252 return mt7530_mii_read(p->priv, p->reg);
256 _mt7530_read(struct mt7530_dummy_poll *p)
258 struct mii_bus *bus = p->priv->bus;
261 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
263 val = mt7530_mii_read(p->priv, p->reg);
265 mutex_unlock(&bus->mdio_lock);
271 mt7530_read(struct mt7530_priv *priv, u32 reg)
273 struct mt7530_dummy_poll p;
275 INIT_MT7530_DUMMY_POLL(&p, priv, reg);
276 return _mt7530_read(&p);
280 mt7530_rmw(struct mt7530_priv *priv, u32 reg,
283 struct mii_bus *bus = priv->bus;
286 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
288 val = mt7530_mii_read(priv, reg);
291 mt7530_mii_write(priv, reg, val);
293 mutex_unlock(&bus->mdio_lock);
297 mt7530_set(struct mt7530_priv *priv, u32 reg, u32 val)
299 mt7530_rmw(priv, reg, 0, val);
303 mt7530_clear(struct mt7530_priv *priv, u32 reg, u32 val)
305 mt7530_rmw(priv, reg, val, 0);
309 mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp)
313 struct mt7530_dummy_poll p;
315 /* Set the command operating upon the MAC address entries */
316 val = ATC_BUSY | ATC_MAT(0) | cmd;
317 mt7530_write(priv, MT7530_ATC, val);
319 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_ATC);
320 ret = readx_poll_timeout(_mt7530_read, &p, val,
321 !(val & ATC_BUSY), 20, 20000);
323 dev_err(priv->dev, "reset timeout\n");
327 /* Additional sanity for read command if the specified
330 val = mt7530_read(priv, MT7530_ATC);
331 if ((cmd == MT7530_FDB_READ) && (val & ATC_INVALID))
341 mt7530_fdb_read(struct mt7530_priv *priv, struct mt7530_fdb *fdb)
346 /* Read from ARL table into an array */
347 for (i = 0; i < 3; i++) {
348 reg[i] = mt7530_read(priv, MT7530_TSRA1 + (i * 4));
350 dev_dbg(priv->dev, "%s(%d) reg[%d]=0x%x\n",
351 __func__, __LINE__, i, reg[i]);
354 fdb->vid = (reg[1] >> CVID) & CVID_MASK;
355 fdb->aging = (reg[2] >> AGE_TIMER) & AGE_TIMER_MASK;
356 fdb->port_mask = (reg[2] >> PORT_MAP) & PORT_MAP_MASK;
357 fdb->mac[0] = (reg[0] >> MAC_BYTE_0) & MAC_BYTE_MASK;
358 fdb->mac[1] = (reg[0] >> MAC_BYTE_1) & MAC_BYTE_MASK;
359 fdb->mac[2] = (reg[0] >> MAC_BYTE_2) & MAC_BYTE_MASK;
360 fdb->mac[3] = (reg[0] >> MAC_BYTE_3) & MAC_BYTE_MASK;
361 fdb->mac[4] = (reg[1] >> MAC_BYTE_4) & MAC_BYTE_MASK;
362 fdb->mac[5] = (reg[1] >> MAC_BYTE_5) & MAC_BYTE_MASK;
363 fdb->noarp = ((reg[2] >> ENT_STATUS) & ENT_STATUS_MASK) == STATIC_ENT;
367 mt7530_fdb_write(struct mt7530_priv *priv, u16 vid,
368 u8 port_mask, const u8 *mac,
374 reg[1] |= vid & CVID_MASK;
376 reg[1] |= ATA2_FID(FID_BRIDGED);
377 reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER;
378 reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP;
379 /* STATIC_ENT indicate that entry is static wouldn't
380 * be aged out and STATIC_EMP specified as erasing an
383 reg[2] |= (type & ENT_STATUS_MASK) << ENT_STATUS;
384 reg[1] |= mac[5] << MAC_BYTE_5;
385 reg[1] |= mac[4] << MAC_BYTE_4;
386 reg[0] |= mac[3] << MAC_BYTE_3;
387 reg[0] |= mac[2] << MAC_BYTE_2;
388 reg[0] |= mac[1] << MAC_BYTE_1;
389 reg[0] |= mac[0] << MAC_BYTE_0;
391 /* Write array into the ARL table */
392 for (i = 0; i < 3; i++)
393 mt7530_write(priv, MT7530_ATA1 + (i * 4), reg[i]);
396 /* Set up switch core clock for MT7530 */
397 static void mt7530_pll_setup(struct mt7530_priv *priv)
399 /* Disable core clock */
400 core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
403 core_write(priv, CORE_GSWPLL_GRP1, 0);
405 /* Set core clock into 500Mhz */
406 core_write(priv, CORE_GSWPLL_GRP2,
407 RG_GSWPLL_POSDIV_500M(1) |
408 RG_GSWPLL_FBKDIV_500M(25));
411 core_write(priv, CORE_GSWPLL_GRP1,
413 RG_GSWPLL_POSDIV_200M(2) |
414 RG_GSWPLL_FBKDIV_200M(32));
418 /* Enable core clock */
419 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
422 /* Setup port 6 interface mode and TRGMII TX circuit */
424 mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
426 struct mt7530_priv *priv = ds->priv;
427 u32 ncpo1, ssc_delta, trgint, xtal;
429 xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK;
431 if (xtal == HWTRAP_XTAL_20MHZ) {
433 "%s: MT7530 with a 20MHz XTAL is not supported!\n",
439 case PHY_INTERFACE_MODE_RGMII:
442 case PHY_INTERFACE_MODE_TRGMII:
444 if (xtal == HWTRAP_XTAL_25MHZ)
448 if (priv->id == ID_MT7621) {
449 /* PLL frequency: 150MHz: 1.2GBit */
450 if (xtal == HWTRAP_XTAL_40MHZ)
452 if (xtal == HWTRAP_XTAL_25MHZ)
454 } else { /* PLL frequency: 250MHz: 2.0Gbit */
455 if (xtal == HWTRAP_XTAL_40MHZ)
457 if (xtal == HWTRAP_XTAL_25MHZ)
462 dev_err(priv->dev, "xMII interface %d not supported\n",
467 mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
468 P6_INTF_MODE(trgint));
471 /* Disable the MT7530 TRGMII clocks */
472 core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN);
474 /* Setup the MT7530 TRGMII Tx Clock */
475 core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1));
476 core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0));
477 core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta));
478 core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta));
479 core_write(priv, CORE_PLL_GROUP4,
480 RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN |
481 RG_SYSPLL_BIAS_LPF_EN);
482 core_write(priv, CORE_PLL_GROUP2,
483 RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN |
484 RG_SYSPLL_POSDIV(1));
485 core_write(priv, CORE_PLL_GROUP7,
486 RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) |
487 RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
489 /* Enable the MT7530 TRGMII clocks */
490 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_TRGMIICK_EN);
496 static bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv)
500 val = mt7530_read(priv, MT7531_TOP_SIG_SR);
502 return (val & PAD_DUAL_SGMII_EN) != 0;
506 mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface)
512 mt7531_pll_setup(struct mt7530_priv *priv)
519 if (mt7531_dual_sgmii_supported(priv))
522 val = mt7530_read(priv, MT7531_CREV);
523 top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR);
524 hwstrap = mt7530_read(priv, MT7531_HWTRAP);
525 if ((val & CHIP_REV_M) > 0)
526 xtal = (top_sig & PAD_MCM_SMI_EN) ? HWTRAP_XTAL_FSEL_40MHZ :
527 HWTRAP_XTAL_FSEL_25MHZ;
529 xtal = hwstrap & HWTRAP_XTAL_FSEL_MASK;
531 /* Step 1 : Disable MT7531 COREPLL */
532 val = mt7530_read(priv, MT7531_PLLGP_EN);
534 mt7530_write(priv, MT7531_PLLGP_EN, val);
536 /* Step 2: switch to XTAL output */
537 val = mt7530_read(priv, MT7531_PLLGP_EN);
539 mt7530_write(priv, MT7531_PLLGP_EN, val);
541 val = mt7530_read(priv, MT7531_PLLGP_CR0);
542 val &= ~RG_COREPLL_EN;
543 mt7530_write(priv, MT7531_PLLGP_CR0, val);
545 /* Step 3: disable PLLGP and enable program PLLGP */
546 val = mt7530_read(priv, MT7531_PLLGP_EN);
548 mt7530_write(priv, MT7531_PLLGP_EN, val);
550 /* Step 4: program COREPLL output frequency to 500MHz */
551 val = mt7530_read(priv, MT7531_PLLGP_CR0);
552 val &= ~RG_COREPLL_POSDIV_M;
553 val |= 2 << RG_COREPLL_POSDIV_S;
554 mt7530_write(priv, MT7531_PLLGP_CR0, val);
555 usleep_range(25, 35);
558 case HWTRAP_XTAL_FSEL_25MHZ:
559 val = mt7530_read(priv, MT7531_PLLGP_CR0);
560 val &= ~RG_COREPLL_SDM_PCW_M;
561 val |= 0x140000 << RG_COREPLL_SDM_PCW_S;
562 mt7530_write(priv, MT7531_PLLGP_CR0, val);
564 case HWTRAP_XTAL_FSEL_40MHZ:
565 val = mt7530_read(priv, MT7531_PLLGP_CR0);
566 val &= ~RG_COREPLL_SDM_PCW_M;
567 val |= 0x190000 << RG_COREPLL_SDM_PCW_S;
568 mt7530_write(priv, MT7531_PLLGP_CR0, val);
572 /* Set feedback divide ratio update signal to high */
573 val = mt7530_read(priv, MT7531_PLLGP_CR0);
574 val |= RG_COREPLL_SDM_PCW_CHG;
575 mt7530_write(priv, MT7531_PLLGP_CR0, val);
576 /* Wait for at least 16 XTAL clocks */
577 usleep_range(10, 20);
579 /* Step 5: set feedback divide ratio update signal to low */
580 val = mt7530_read(priv, MT7531_PLLGP_CR0);
581 val &= ~RG_COREPLL_SDM_PCW_CHG;
582 mt7530_write(priv, MT7531_PLLGP_CR0, val);
584 /* Enable 325M clock for SGMII */
585 mt7530_write(priv, MT7531_ANA_PLLGP_CR5, 0xad0000);
587 /* Enable 250SSC clock for RGMII */
588 mt7530_write(priv, MT7531_ANA_PLLGP_CR2, 0x4f40000);
590 /* Step 6: Enable MT7531 PLL */
591 val = mt7530_read(priv, MT7531_PLLGP_CR0);
592 val |= RG_COREPLL_EN;
593 mt7530_write(priv, MT7531_PLLGP_CR0, val);
595 val = mt7530_read(priv, MT7531_PLLGP_EN);
597 mt7530_write(priv, MT7531_PLLGP_EN, val);
598 usleep_range(25, 35);
602 mt7530_mib_reset(struct dsa_switch *ds)
604 struct mt7530_priv *priv = ds->priv;
606 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_FLUSH);
607 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE);
610 static int mt7530_phy_read_c22(struct mt7530_priv *priv, int port, int regnum)
612 return mdiobus_read_nested(priv->bus, port, regnum);
615 static int mt7530_phy_write_c22(struct mt7530_priv *priv, int port, int regnum,
618 return mdiobus_write_nested(priv->bus, port, regnum, val);
621 static int mt7530_phy_read_c45(struct mt7530_priv *priv, int port,
622 int devad, int regnum)
624 return mdiobus_c45_read_nested(priv->bus, port, devad, regnum);
627 static int mt7530_phy_write_c45(struct mt7530_priv *priv, int port, int devad,
630 return mdiobus_c45_write_nested(priv->bus, port, devad, regnum, val);
634 mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
637 struct mii_bus *bus = priv->bus;
638 struct mt7530_dummy_poll p;
642 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
644 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
646 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
647 !(val & MT7531_PHY_ACS_ST), 20, 100000);
649 dev_err(priv->dev, "poll timeout\n");
653 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
654 MT7531_MDIO_DEV_ADDR(devad) | regnum;
655 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
657 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
658 !(val & MT7531_PHY_ACS_ST), 20, 100000);
660 dev_err(priv->dev, "poll timeout\n");
664 reg = MT7531_MDIO_CL45_READ | MT7531_MDIO_PHY_ADDR(port) |
665 MT7531_MDIO_DEV_ADDR(devad);
666 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
668 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
669 !(val & MT7531_PHY_ACS_ST), 20, 100000);
671 dev_err(priv->dev, "poll timeout\n");
675 ret = val & MT7531_MDIO_RW_DATA_MASK;
677 mutex_unlock(&bus->mdio_lock);
683 mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
684 int regnum, u16 data)
686 struct mii_bus *bus = priv->bus;
687 struct mt7530_dummy_poll p;
691 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
693 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
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 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
703 MT7531_MDIO_DEV_ADDR(devad) | regnum;
704 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
706 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
707 !(val & MT7531_PHY_ACS_ST), 20, 100000);
709 dev_err(priv->dev, "poll timeout\n");
713 reg = MT7531_MDIO_CL45_WRITE | MT7531_MDIO_PHY_ADDR(port) |
714 MT7531_MDIO_DEV_ADDR(devad) | data;
715 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
717 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
718 !(val & MT7531_PHY_ACS_ST), 20, 100000);
720 dev_err(priv->dev, "poll timeout\n");
725 mutex_unlock(&bus->mdio_lock);
731 mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
733 struct mii_bus *bus = priv->bus;
734 struct mt7530_dummy_poll p;
738 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
740 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
742 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
743 !(val & MT7531_PHY_ACS_ST), 20, 100000);
745 dev_err(priv->dev, "poll timeout\n");
749 val = MT7531_MDIO_CL22_READ | MT7531_MDIO_PHY_ADDR(port) |
750 MT7531_MDIO_REG_ADDR(regnum);
752 mt7530_mii_write(priv, MT7531_PHY_IAC, val | MT7531_PHY_ACS_ST);
754 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
755 !(val & MT7531_PHY_ACS_ST), 20, 100000);
757 dev_err(priv->dev, "poll timeout\n");
761 ret = val & MT7531_MDIO_RW_DATA_MASK;
763 mutex_unlock(&bus->mdio_lock);
769 mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
772 struct mii_bus *bus = priv->bus;
773 struct mt7530_dummy_poll p;
777 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
779 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
781 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
782 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
784 dev_err(priv->dev, "poll timeout\n");
788 reg = MT7531_MDIO_CL22_WRITE | MT7531_MDIO_PHY_ADDR(port) |
789 MT7531_MDIO_REG_ADDR(regnum) | data;
791 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
793 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
794 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
796 dev_err(priv->dev, "poll timeout\n");
801 mutex_unlock(&bus->mdio_lock);
807 mt753x_phy_read_c22(struct mii_bus *bus, int port, int regnum)
809 struct mt7530_priv *priv = bus->priv;
811 return priv->info->phy_read_c22(priv, port, regnum);
815 mt753x_phy_read_c45(struct mii_bus *bus, int port, int devad, int regnum)
817 struct mt7530_priv *priv = bus->priv;
819 return priv->info->phy_read_c45(priv, port, devad, regnum);
823 mt753x_phy_write_c22(struct mii_bus *bus, int port, int regnum, u16 val)
825 struct mt7530_priv *priv = bus->priv;
827 return priv->info->phy_write_c22(priv, port, regnum, val);
831 mt753x_phy_write_c45(struct mii_bus *bus, int port, int devad, int regnum,
834 struct mt7530_priv *priv = bus->priv;
836 return priv->info->phy_write_c45(priv, port, devad, regnum, val);
840 mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
845 if (stringset != ETH_SS_STATS)
848 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++)
849 strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name,
854 mt7530_get_ethtool_stats(struct dsa_switch *ds, int port,
857 struct mt7530_priv *priv = ds->priv;
858 const struct mt7530_mib_desc *mib;
862 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) {
863 mib = &mt7530_mib[i];
864 reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset;
866 data[i] = mt7530_read(priv, reg);
867 if (mib->size == 2) {
868 hi = mt7530_read(priv, reg + 4);
875 mt7530_get_sset_count(struct dsa_switch *ds, int port, int sset)
877 if (sset != ETH_SS_STATS)
880 return ARRAY_SIZE(mt7530_mib);
884 mt7530_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
886 struct mt7530_priv *priv = ds->priv;
887 unsigned int secs = msecs / 1000;
888 unsigned int tmp_age_count;
889 unsigned int error = -1;
890 unsigned int age_count;
891 unsigned int age_unit;
893 /* Applied timer is (AGE_CNT + 1) * (AGE_UNIT + 1) seconds */
894 if (secs < 1 || secs > (AGE_CNT_MAX + 1) * (AGE_UNIT_MAX + 1))
897 /* iterate through all possible age_count to find the closest pair */
898 for (tmp_age_count = 0; tmp_age_count <= AGE_CNT_MAX; ++tmp_age_count) {
899 unsigned int tmp_age_unit = secs / (tmp_age_count + 1) - 1;
901 if (tmp_age_unit <= AGE_UNIT_MAX) {
902 unsigned int tmp_error = secs -
903 (tmp_age_count + 1) * (tmp_age_unit + 1);
905 /* found a closer pair */
906 if (error > tmp_error) {
908 age_count = tmp_age_count;
909 age_unit = tmp_age_unit;
912 /* found the exact match, so break the loop */
918 mt7530_write(priv, MT7530_AAC, AGE_CNT(age_count) | AGE_UNIT(age_unit));
923 static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
925 struct mt7530_priv *priv = ds->priv;
929 mutex_lock(&priv->reg_mutex);
931 val = mt7530_read(priv, MT7530_MHWTRAP);
933 val |= MHWTRAP_MANUAL | MHWTRAP_P5_MAC_SEL | MHWTRAP_P5_DIS;
934 val &= ~MHWTRAP_P5_RGMII_MODE & ~MHWTRAP_PHY0_SEL;
936 switch (priv->p5_intf_sel) {
937 case P5_INTF_SEL_PHY_P0:
938 /* MT7530_P5_MODE_GPHY_P0: 2nd GMAC -> P5 -> P0 */
939 val |= MHWTRAP_PHY0_SEL;
941 case P5_INTF_SEL_PHY_P4:
942 /* MT7530_P5_MODE_GPHY_P4: 2nd GMAC -> P5 -> P4 */
943 val &= ~MHWTRAP_P5_MAC_SEL & ~MHWTRAP_P5_DIS;
945 /* Setup the MAC by default for the cpu port */
946 mt7530_write(priv, MT7530_PMCR_P(5), 0x56300);
948 case P5_INTF_SEL_GMAC5:
949 /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
950 val &= ~MHWTRAP_P5_DIS;
953 interface = PHY_INTERFACE_MODE_NA;
956 dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
961 /* Setup RGMII settings */
962 if (phy_interface_mode_is_rgmii(interface)) {
963 val |= MHWTRAP_P5_RGMII_MODE;
965 /* P5 RGMII RX Clock Control: delay setting for 1000M */
966 mt7530_write(priv, MT7530_P5RGMIIRXCR, CSR_RGMII_EDGE_ALIGN);
968 /* Don't set delay in DSA mode */
969 if (!dsa_is_dsa_port(priv->ds, 5) &&
970 (interface == PHY_INTERFACE_MODE_RGMII_TXID ||
971 interface == PHY_INTERFACE_MODE_RGMII_ID))
972 tx_delay = 4; /* n * 0.5 ns */
974 /* P5 RGMII TX Clock Control: delay x */
975 mt7530_write(priv, MT7530_P5RGMIITXCR,
976 CSR_RGMII_TXC_CFG(0x10 + tx_delay));
978 /* reduce P5 RGMII Tx driving, 8mA */
979 mt7530_write(priv, MT7530_IO_DRV_CR,
980 P5_IO_CLK_DRV(1) | P5_IO_DATA_DRV(1));
983 mt7530_write(priv, MT7530_MHWTRAP, val);
985 dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
986 val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));
988 priv->p5_interface = interface;
991 mutex_unlock(&priv->reg_mutex);
995 mt753x_cpu_port_enable(struct dsa_switch *ds, int port)
997 struct mt7530_priv *priv = ds->priv;
1000 /* Setup max capability of CPU port at first */
1001 if (priv->info->cpu_port_config) {
1002 ret = priv->info->cpu_port_config(ds, port);
1007 /* Enable Mediatek header mode on the cpu port */
1008 mt7530_write(priv, MT7530_PVC_P(port),
1011 /* Disable flooding by default */
1012 mt7530_rmw(priv, MT7530_MFC, BC_FFP_MASK | UNM_FFP_MASK | UNU_FFP_MASK,
1013 BC_FFP(BIT(port)) | UNM_FFP(BIT(port)) | UNU_FFP(BIT(port)));
1015 /* Set CPU port number */
1016 if (priv->id == ID_MT7621)
1017 mt7530_rmw(priv, MT7530_MFC, CPU_MASK, CPU_EN | CPU_PORT(port));
1019 /* CPU port gets connected to all user ports of
1022 mt7530_write(priv, MT7530_PCR_P(port),
1023 PCR_MATRIX(dsa_user_ports(priv->ds)));
1025 /* Set to fallback mode for independent VLAN learning */
1026 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1027 MT7530_PORT_FALLBACK_MODE);
1033 mt7530_port_enable(struct dsa_switch *ds, int port,
1034 struct phy_device *phy)
1036 struct dsa_port *dp = dsa_to_port(ds, port);
1037 struct mt7530_priv *priv = ds->priv;
1039 mutex_lock(&priv->reg_mutex);
1041 /* Allow the user port gets connected to the cpu port and also
1042 * restore the port matrix if the port is the member of a certain
1045 if (dsa_port_is_user(dp)) {
1046 struct dsa_port *cpu_dp = dp->cpu_dp;
1048 priv->ports[port].pm |= PCR_MATRIX(BIT(cpu_dp->index));
1050 priv->ports[port].enable = true;
1051 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1052 priv->ports[port].pm);
1053 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
1055 mutex_unlock(&priv->reg_mutex);
1061 mt7530_port_disable(struct dsa_switch *ds, int port)
1063 struct mt7530_priv *priv = ds->priv;
1065 mutex_lock(&priv->reg_mutex);
1067 /* Clear up all port matrix which could be restored in the next
1068 * enablement for the port.
1070 priv->ports[port].enable = false;
1071 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1073 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
1075 mutex_unlock(&priv->reg_mutex);
1079 mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
1081 struct mt7530_priv *priv = ds->priv;
1082 struct mii_bus *bus = priv->bus;
1086 /* When a new MTU is set, DSA always set the CPU port's MTU to the
1087 * largest MTU of the slave ports. Because the switch only has a global
1088 * RX length register, only allowing CPU port here is enough.
1090 if (!dsa_is_cpu_port(ds, port))
1093 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
1095 val = mt7530_mii_read(priv, MT7530_GMACCR);
1096 val &= ~MAX_RX_PKT_LEN_MASK;
1098 /* RX length also includes Ethernet header, MTK tag, and FCS length */
1099 length = new_mtu + ETH_HLEN + MTK_HDR_LEN + ETH_FCS_LEN;
1100 if (length <= 1522) {
1101 val |= MAX_RX_PKT_LEN_1522;
1102 } else if (length <= 1536) {
1103 val |= MAX_RX_PKT_LEN_1536;
1104 } else if (length <= 1552) {
1105 val |= MAX_RX_PKT_LEN_1552;
1107 val &= ~MAX_RX_JUMBO_MASK;
1108 val |= MAX_RX_JUMBO(DIV_ROUND_UP(length, 1024));
1109 val |= MAX_RX_PKT_LEN_JUMBO;
1112 mt7530_mii_write(priv, MT7530_GMACCR, val);
1114 mutex_unlock(&bus->mdio_lock);
1120 mt7530_port_max_mtu(struct dsa_switch *ds, int port)
1122 return MT7530_MAX_MTU;
1126 mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1128 struct mt7530_priv *priv = ds->priv;
1132 case BR_STATE_DISABLED:
1133 stp_state = MT7530_STP_DISABLED;
1135 case BR_STATE_BLOCKING:
1136 stp_state = MT7530_STP_BLOCKING;
1138 case BR_STATE_LISTENING:
1139 stp_state = MT7530_STP_LISTENING;
1141 case BR_STATE_LEARNING:
1142 stp_state = MT7530_STP_LEARNING;
1144 case BR_STATE_FORWARDING:
1146 stp_state = MT7530_STP_FORWARDING;
1150 mt7530_rmw(priv, MT7530_SSP_P(port), FID_PST_MASK(FID_BRIDGED),
1151 FID_PST(FID_BRIDGED, stp_state));
1155 mt7530_port_pre_bridge_flags(struct dsa_switch *ds, int port,
1156 struct switchdev_brport_flags flags,
1157 struct netlink_ext_ack *extack)
1159 if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
1167 mt7530_port_bridge_flags(struct dsa_switch *ds, int port,
1168 struct switchdev_brport_flags flags,
1169 struct netlink_ext_ack *extack)
1171 struct mt7530_priv *priv = ds->priv;
1173 if (flags.mask & BR_LEARNING)
1174 mt7530_rmw(priv, MT7530_PSC_P(port), SA_DIS,
1175 flags.val & BR_LEARNING ? 0 : SA_DIS);
1177 if (flags.mask & BR_FLOOD)
1178 mt7530_rmw(priv, MT7530_MFC, UNU_FFP(BIT(port)),
1179 flags.val & BR_FLOOD ? UNU_FFP(BIT(port)) : 0);
1181 if (flags.mask & BR_MCAST_FLOOD)
1182 mt7530_rmw(priv, MT7530_MFC, UNM_FFP(BIT(port)),
1183 flags.val & BR_MCAST_FLOOD ? UNM_FFP(BIT(port)) : 0);
1185 if (flags.mask & BR_BCAST_FLOOD)
1186 mt7530_rmw(priv, MT7530_MFC, BC_FFP(BIT(port)),
1187 flags.val & BR_BCAST_FLOOD ? BC_FFP(BIT(port)) : 0);
1193 mt7530_port_bridge_join(struct dsa_switch *ds, int port,
1194 struct dsa_bridge bridge, bool *tx_fwd_offload,
1195 struct netlink_ext_ack *extack)
1197 struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
1198 struct dsa_port *cpu_dp = dp->cpu_dp;
1199 u32 port_bitmap = BIT(cpu_dp->index);
1200 struct mt7530_priv *priv = ds->priv;
1202 mutex_lock(&priv->reg_mutex);
1204 dsa_switch_for_each_user_port(other_dp, ds) {
1205 int other_port = other_dp->index;
1210 /* Add this port to the port matrix of the other ports in the
1211 * same bridge. If the port is disabled, port matrix is kept
1212 * and not being setup until the port becomes enabled.
1214 if (!dsa_port_offloads_bridge(other_dp, &bridge))
1217 if (priv->ports[other_port].enable)
1218 mt7530_set(priv, MT7530_PCR_P(other_port),
1219 PCR_MATRIX(BIT(port)));
1220 priv->ports[other_port].pm |= PCR_MATRIX(BIT(port));
1222 port_bitmap |= BIT(other_port);
1225 /* Add the all other ports to this port matrix. */
1226 if (priv->ports[port].enable)
1227 mt7530_rmw(priv, MT7530_PCR_P(port),
1228 PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap));
1229 priv->ports[port].pm |= PCR_MATRIX(port_bitmap);
1231 /* Set to fallback mode for independent VLAN learning */
1232 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1233 MT7530_PORT_FALLBACK_MODE);
1235 mutex_unlock(&priv->reg_mutex);
1241 mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
1243 struct mt7530_priv *priv = ds->priv;
1244 bool all_user_ports_removed = true;
1247 /* This is called after .port_bridge_leave when leaving a VLAN-aware
1248 * bridge. Don't set standalone ports to fallback mode.
1250 if (dsa_port_bridge_dev_get(dsa_to_port(ds, port)))
1251 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1252 MT7530_PORT_FALLBACK_MODE);
1254 mt7530_rmw(priv, MT7530_PVC_P(port),
1255 VLAN_ATTR_MASK | PVC_EG_TAG_MASK | ACC_FRM_MASK,
1256 VLAN_ATTR(MT7530_VLAN_TRANSPARENT) |
1257 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT) |
1258 MT7530_VLAN_ACC_ALL);
1261 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1264 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1265 if (dsa_is_user_port(ds, i) &&
1266 dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) {
1267 all_user_ports_removed = false;
1272 /* CPU port also does the same thing until all user ports belonging to
1273 * the CPU port get out of VLAN filtering mode.
1275 if (all_user_ports_removed) {
1276 struct dsa_port *dp = dsa_to_port(ds, port);
1277 struct dsa_port *cpu_dp = dp->cpu_dp;
1279 mt7530_write(priv, MT7530_PCR_P(cpu_dp->index),
1280 PCR_MATRIX(dsa_user_ports(priv->ds)));
1281 mt7530_write(priv, MT7530_PVC_P(cpu_dp->index), PORT_SPEC_TAG
1282 | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
1287 mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port)
1289 struct mt7530_priv *priv = ds->priv;
1291 /* Trapped into security mode allows packet forwarding through VLAN
1294 if (dsa_is_user_port(ds, port)) {
1295 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1296 MT7530_PORT_SECURITY_MODE);
1297 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1298 G0_PORT_VID(priv->ports[port].pvid));
1300 /* Only accept tagged frames if PVID is not set */
1301 if (!priv->ports[port].pvid)
1302 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1303 MT7530_VLAN_ACC_TAGGED);
1305 /* Set the port as a user port which is to be able to recognize
1306 * VID from incoming packets before fetching entry within the
1309 mt7530_rmw(priv, MT7530_PVC_P(port),
1310 VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
1311 VLAN_ATTR(MT7530_VLAN_USER) |
1312 PVC_EG_TAG(MT7530_VLAN_EG_DISABLED));
1314 /* Also set CPU ports to the "user" VLAN port attribute, to
1315 * allow VLAN classification, but keep the EG_TAG attribute as
1316 * "consistent" (i.o.w. don't change its value) for packets
1317 * received by the switch from the CPU, so that tagged packets
1318 * are forwarded to user ports as tagged, and untagged as
1321 mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK,
1322 VLAN_ATTR(MT7530_VLAN_USER));
1327 mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
1328 struct dsa_bridge bridge)
1330 struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
1331 struct dsa_port *cpu_dp = dp->cpu_dp;
1332 struct mt7530_priv *priv = ds->priv;
1334 mutex_lock(&priv->reg_mutex);
1336 dsa_switch_for_each_user_port(other_dp, ds) {
1337 int other_port = other_dp->index;
1342 /* Remove this port from the port matrix of the other ports
1343 * in the same bridge. If the port is disabled, port matrix
1344 * is kept and not being setup until the port becomes enabled.
1346 if (!dsa_port_offloads_bridge(other_dp, &bridge))
1349 if (priv->ports[other_port].enable)
1350 mt7530_clear(priv, MT7530_PCR_P(other_port),
1351 PCR_MATRIX(BIT(port)));
1352 priv->ports[other_port].pm &= ~PCR_MATRIX(BIT(port));
1355 /* Set the cpu port to be the only one in the port matrix of
1358 if (priv->ports[port].enable)
1359 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1360 PCR_MATRIX(BIT(cpu_dp->index)));
1361 priv->ports[port].pm = PCR_MATRIX(BIT(cpu_dp->index));
1363 /* When a port is removed from the bridge, the port would be set up
1364 * back to the default as is at initial boot which is a VLAN-unaware
1367 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1368 MT7530_PORT_MATRIX_MODE);
1370 mutex_unlock(&priv->reg_mutex);
1374 mt7530_port_fdb_add(struct dsa_switch *ds, int port,
1375 const unsigned char *addr, u16 vid,
1378 struct mt7530_priv *priv = ds->priv;
1380 u8 port_mask = BIT(port);
1382 mutex_lock(&priv->reg_mutex);
1383 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
1384 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1385 mutex_unlock(&priv->reg_mutex);
1391 mt7530_port_fdb_del(struct dsa_switch *ds, int port,
1392 const unsigned char *addr, u16 vid,
1395 struct mt7530_priv *priv = ds->priv;
1397 u8 port_mask = BIT(port);
1399 mutex_lock(&priv->reg_mutex);
1400 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_EMP);
1401 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1402 mutex_unlock(&priv->reg_mutex);
1408 mt7530_port_fdb_dump(struct dsa_switch *ds, int port,
1409 dsa_fdb_dump_cb_t *cb, void *data)
1411 struct mt7530_priv *priv = ds->priv;
1412 struct mt7530_fdb _fdb = { 0 };
1413 int cnt = MT7530_NUM_FDB_RECORDS;
1417 mutex_lock(&priv->reg_mutex);
1419 ret = mt7530_fdb_cmd(priv, MT7530_FDB_START, &rsp);
1424 if (rsp & ATC_SRCH_HIT) {
1425 mt7530_fdb_read(priv, &_fdb);
1426 if (_fdb.port_mask & BIT(port)) {
1427 ret = cb(_fdb.mac, _fdb.vid, _fdb.noarp,
1434 !(rsp & ATC_SRCH_END) &&
1435 !mt7530_fdb_cmd(priv, MT7530_FDB_NEXT, &rsp));
1437 mutex_unlock(&priv->reg_mutex);
1443 mt7530_port_mdb_add(struct dsa_switch *ds, int port,
1444 const struct switchdev_obj_port_mdb *mdb,
1447 struct mt7530_priv *priv = ds->priv;
1448 const u8 *addr = mdb->addr;
1453 mutex_lock(&priv->reg_mutex);
1455 mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
1456 if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
1457 port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
1460 port_mask |= BIT(port);
1461 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
1462 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1464 mutex_unlock(&priv->reg_mutex);
1470 mt7530_port_mdb_del(struct dsa_switch *ds, int port,
1471 const struct switchdev_obj_port_mdb *mdb,
1474 struct mt7530_priv *priv = ds->priv;
1475 const u8 *addr = mdb->addr;
1480 mutex_lock(&priv->reg_mutex);
1482 mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
1483 if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
1484 port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
1487 port_mask &= ~BIT(port);
1488 mt7530_fdb_write(priv, vid, port_mask, addr, -1,
1489 port_mask ? STATIC_ENT : STATIC_EMP);
1490 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1492 mutex_unlock(&priv->reg_mutex);
1498 mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid)
1500 struct mt7530_dummy_poll p;
1504 val = VTCR_BUSY | VTCR_FUNC(cmd) | vid;
1505 mt7530_write(priv, MT7530_VTCR, val);
1507 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_VTCR);
1508 ret = readx_poll_timeout(_mt7530_read, &p, val,
1509 !(val & VTCR_BUSY), 20, 20000);
1511 dev_err(priv->dev, "poll timeout\n");
1515 val = mt7530_read(priv, MT7530_VTCR);
1516 if (val & VTCR_INVALID) {
1517 dev_err(priv->dev, "read VTCR invalid\n");
1525 mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1526 struct netlink_ext_ack *extack)
1528 struct dsa_port *dp = dsa_to_port(ds, port);
1529 struct dsa_port *cpu_dp = dp->cpu_dp;
1531 if (vlan_filtering) {
1532 /* The port is being kept as VLAN-unaware port when bridge is
1533 * set up with vlan_filtering not being set, Otherwise, the
1534 * port and the corresponding CPU port is required the setup
1535 * for becoming a VLAN-aware port.
1537 mt7530_port_set_vlan_aware(ds, port);
1538 mt7530_port_set_vlan_aware(ds, cpu_dp->index);
1540 mt7530_port_set_vlan_unaware(ds, port);
1547 mt7530_hw_vlan_add(struct mt7530_priv *priv,
1548 struct mt7530_hw_vlan_entry *entry)
1550 struct dsa_port *dp = dsa_to_port(priv->ds, entry->port);
1554 new_members = entry->old_members | BIT(entry->port);
1556 /* Validate the entry with independent learning, create egress tag per
1557 * VLAN and joining the port as one of the port members.
1559 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | FID(FID_BRIDGED) |
1561 mt7530_write(priv, MT7530_VAWD1, val);
1563 /* Decide whether adding tag or not for those outgoing packets from the
1564 * port inside the VLAN.
1565 * CPU port is always taken as a tagged port for serving more than one
1566 * VLANs across and also being applied with egress type stack mode for
1567 * that VLAN tags would be appended after hardware special tag used as
1570 if (dsa_port_is_cpu(dp))
1571 val = MT7530_VLAN_EGRESS_STACK;
1572 else if (entry->untagged)
1573 val = MT7530_VLAN_EGRESS_UNTAG;
1575 val = MT7530_VLAN_EGRESS_TAG;
1576 mt7530_rmw(priv, MT7530_VAWD2,
1577 ETAG_CTRL_P_MASK(entry->port),
1578 ETAG_CTRL_P(entry->port, val));
1582 mt7530_hw_vlan_del(struct mt7530_priv *priv,
1583 struct mt7530_hw_vlan_entry *entry)
1588 new_members = entry->old_members & ~BIT(entry->port);
1590 val = mt7530_read(priv, MT7530_VAWD1);
1591 if (!(val & VLAN_VALID)) {
1593 "Cannot be deleted due to invalid entry\n");
1598 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) |
1600 mt7530_write(priv, MT7530_VAWD1, val);
1602 mt7530_write(priv, MT7530_VAWD1, 0);
1603 mt7530_write(priv, MT7530_VAWD2, 0);
1608 mt7530_hw_vlan_update(struct mt7530_priv *priv, u16 vid,
1609 struct mt7530_hw_vlan_entry *entry,
1610 mt7530_vlan_op vlan_op)
1615 mt7530_vlan_cmd(priv, MT7530_VTCR_RD_VID, vid);
1617 val = mt7530_read(priv, MT7530_VAWD1);
1619 entry->old_members = (val >> PORT_MEM_SHFT) & PORT_MEM_MASK;
1621 /* Manipulate entry */
1622 vlan_op(priv, entry);
1624 /* Flush result to hardware */
1625 mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, vid);
1629 mt7530_setup_vlan0(struct mt7530_priv *priv)
1633 /* Validate the entry with independent learning, keep the original
1634 * ingress tag attribute.
1636 val = IVL_MAC | EG_CON | PORT_MEM(MT7530_ALL_MEMBERS) | FID(FID_BRIDGED) |
1638 mt7530_write(priv, MT7530_VAWD1, val);
1640 return mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, 0);
1644 mt7530_port_vlan_add(struct dsa_switch *ds, int port,
1645 const struct switchdev_obj_port_vlan *vlan,
1646 struct netlink_ext_ack *extack)
1648 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1649 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1650 struct mt7530_hw_vlan_entry new_entry;
1651 struct mt7530_priv *priv = ds->priv;
1653 mutex_lock(&priv->reg_mutex);
1655 mt7530_hw_vlan_entry_init(&new_entry, port, untagged);
1656 mt7530_hw_vlan_update(priv, vlan->vid, &new_entry, mt7530_hw_vlan_add);
1659 priv->ports[port].pvid = vlan->vid;
1661 /* Accept all frames if PVID is set */
1662 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1663 MT7530_VLAN_ACC_ALL);
1665 /* Only configure PVID if VLAN filtering is enabled */
1666 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1667 mt7530_rmw(priv, MT7530_PPBV1_P(port),
1669 G0_PORT_VID(vlan->vid));
1670 } else if (vlan->vid && priv->ports[port].pvid == vlan->vid) {
1671 /* This VLAN is overwritten without PVID, so unset it */
1672 priv->ports[port].pvid = G0_PORT_VID_DEF;
1674 /* Only accept tagged frames if the port is VLAN-aware */
1675 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1676 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1677 MT7530_VLAN_ACC_TAGGED);
1679 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1683 mutex_unlock(&priv->reg_mutex);
1689 mt7530_port_vlan_del(struct dsa_switch *ds, int port,
1690 const struct switchdev_obj_port_vlan *vlan)
1692 struct mt7530_hw_vlan_entry target_entry;
1693 struct mt7530_priv *priv = ds->priv;
1695 mutex_lock(&priv->reg_mutex);
1697 mt7530_hw_vlan_entry_init(&target_entry, port, 0);
1698 mt7530_hw_vlan_update(priv, vlan->vid, &target_entry,
1699 mt7530_hw_vlan_del);
1701 /* PVID is being restored to the default whenever the PVID port
1702 * is being removed from the VLAN.
1704 if (priv->ports[port].pvid == vlan->vid) {
1705 priv->ports[port].pvid = G0_PORT_VID_DEF;
1707 /* Only accept tagged frames if the port is VLAN-aware */
1708 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1709 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1710 MT7530_VLAN_ACC_TAGGED);
1712 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1717 mutex_unlock(&priv->reg_mutex);
1722 static int mt753x_mirror_port_get(unsigned int id, u32 val)
1724 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_GET(val) :
1728 static int mt753x_mirror_port_set(unsigned int id, u32 val)
1730 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_SET(val) :
1734 static int mt753x_port_mirror_add(struct dsa_switch *ds, int port,
1735 struct dsa_mall_mirror_tc_entry *mirror,
1736 bool ingress, struct netlink_ext_ack *extack)
1738 struct mt7530_priv *priv = ds->priv;
1742 /* Check for existent entry */
1743 if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
1746 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1748 /* MT7530 only supports one monitor port */
1749 monitor_port = mt753x_mirror_port_get(priv->id, val);
1750 if (val & MT753X_MIRROR_EN(priv->id) &&
1751 monitor_port != mirror->to_local_port)
1754 val |= MT753X_MIRROR_EN(priv->id);
1755 val &= ~MT753X_MIRROR_MASK(priv->id);
1756 val |= mt753x_mirror_port_set(priv->id, mirror->to_local_port);
1757 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1759 val = mt7530_read(priv, MT7530_PCR_P(port));
1762 priv->mirror_rx |= BIT(port);
1765 priv->mirror_tx |= BIT(port);
1767 mt7530_write(priv, MT7530_PCR_P(port), val);
1772 static void mt753x_port_mirror_del(struct dsa_switch *ds, int port,
1773 struct dsa_mall_mirror_tc_entry *mirror)
1775 struct mt7530_priv *priv = ds->priv;
1778 val = mt7530_read(priv, MT7530_PCR_P(port));
1779 if (mirror->ingress) {
1780 val &= ~PORT_RX_MIR;
1781 priv->mirror_rx &= ~BIT(port);
1783 val &= ~PORT_TX_MIR;
1784 priv->mirror_tx &= ~BIT(port);
1786 mt7530_write(priv, MT7530_PCR_P(port), val);
1788 if (!priv->mirror_rx && !priv->mirror_tx) {
1789 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1790 val &= ~MT753X_MIRROR_EN(priv->id);
1791 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1795 static enum dsa_tag_protocol
1796 mtk_get_tag_protocol(struct dsa_switch *ds, int port,
1797 enum dsa_tag_protocol mp)
1799 return DSA_TAG_PROTO_MTK;
1802 #ifdef CONFIG_GPIOLIB
1804 mt7530_gpio_to_bit(unsigned int offset)
1806 /* Map GPIO offset to register bit
1807 * [ 2: 0] port 0 LED 0..2 as GPIO 0..2
1808 * [ 6: 4] port 1 LED 0..2 as GPIO 3..5
1809 * [10: 8] port 2 LED 0..2 as GPIO 6..8
1810 * [14:12] port 3 LED 0..2 as GPIO 9..11
1811 * [18:16] port 4 LED 0..2 as GPIO 12..14
1813 return BIT(offset + offset / 3);
1817 mt7530_gpio_get(struct gpio_chip *gc, unsigned int offset)
1819 struct mt7530_priv *priv = gpiochip_get_data(gc);
1820 u32 bit = mt7530_gpio_to_bit(offset);
1822 return !!(mt7530_read(priv, MT7530_LED_GPIO_DATA) & bit);
1826 mt7530_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
1828 struct mt7530_priv *priv = gpiochip_get_data(gc);
1829 u32 bit = mt7530_gpio_to_bit(offset);
1832 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
1834 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
1838 mt7530_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
1840 struct mt7530_priv *priv = gpiochip_get_data(gc);
1841 u32 bit = mt7530_gpio_to_bit(offset);
1843 return (mt7530_read(priv, MT7530_LED_GPIO_DIR) & bit) ?
1844 GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
1848 mt7530_gpio_direction_input(struct gpio_chip *gc, unsigned int offset)
1850 struct mt7530_priv *priv = gpiochip_get_data(gc);
1851 u32 bit = mt7530_gpio_to_bit(offset);
1853 mt7530_clear(priv, MT7530_LED_GPIO_OE, bit);
1854 mt7530_clear(priv, MT7530_LED_GPIO_DIR, bit);
1860 mt7530_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value)
1862 struct mt7530_priv *priv = gpiochip_get_data(gc);
1863 u32 bit = mt7530_gpio_to_bit(offset);
1865 mt7530_set(priv, MT7530_LED_GPIO_DIR, bit);
1868 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
1870 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
1872 mt7530_set(priv, MT7530_LED_GPIO_OE, bit);
1878 mt7530_setup_gpio(struct mt7530_priv *priv)
1880 struct device *dev = priv->dev;
1881 struct gpio_chip *gc;
1883 gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
1887 mt7530_write(priv, MT7530_LED_GPIO_OE, 0);
1888 mt7530_write(priv, MT7530_LED_GPIO_DIR, 0);
1889 mt7530_write(priv, MT7530_LED_IO_MODE, 0);
1891 gc->label = "mt7530";
1893 gc->owner = THIS_MODULE;
1894 gc->get_direction = mt7530_gpio_get_direction;
1895 gc->direction_input = mt7530_gpio_direction_input;
1896 gc->direction_output = mt7530_gpio_direction_output;
1897 gc->get = mt7530_gpio_get;
1898 gc->set = mt7530_gpio_set;
1901 gc->can_sleep = true;
1903 return devm_gpiochip_add_data(dev, gc, priv);
1905 #endif /* CONFIG_GPIOLIB */
1908 mt7530_irq_thread_fn(int irq, void *dev_id)
1910 struct mt7530_priv *priv = dev_id;
1911 bool handled = false;
1915 mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
1916 val = mt7530_mii_read(priv, MT7530_SYS_INT_STS);
1917 mt7530_mii_write(priv, MT7530_SYS_INT_STS, val);
1918 mutex_unlock(&priv->bus->mdio_lock);
1920 for (p = 0; p < MT7530_NUM_PHYS; p++) {
1924 irq = irq_find_mapping(priv->irq_domain, p);
1925 handle_nested_irq(irq);
1930 return IRQ_RETVAL(handled);
1934 mt7530_irq_mask(struct irq_data *d)
1936 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1938 priv->irq_enable &= ~BIT(d->hwirq);
1942 mt7530_irq_unmask(struct irq_data *d)
1944 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1946 priv->irq_enable |= BIT(d->hwirq);
1950 mt7530_irq_bus_lock(struct irq_data *d)
1952 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1954 mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
1958 mt7530_irq_bus_sync_unlock(struct irq_data *d)
1960 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1962 mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
1963 mutex_unlock(&priv->bus->mdio_lock);
1966 static struct irq_chip mt7530_irq_chip = {
1967 .name = KBUILD_MODNAME,
1968 .irq_mask = mt7530_irq_mask,
1969 .irq_unmask = mt7530_irq_unmask,
1970 .irq_bus_lock = mt7530_irq_bus_lock,
1971 .irq_bus_sync_unlock = mt7530_irq_bus_sync_unlock,
1975 mt7530_irq_map(struct irq_domain *domain, unsigned int irq,
1976 irq_hw_number_t hwirq)
1978 irq_set_chip_data(irq, domain->host_data);
1979 irq_set_chip_and_handler(irq, &mt7530_irq_chip, handle_simple_irq);
1980 irq_set_nested_thread(irq, true);
1981 irq_set_noprobe(irq);
1986 static const struct irq_domain_ops mt7530_irq_domain_ops = {
1987 .map = mt7530_irq_map,
1988 .xlate = irq_domain_xlate_onecell,
1992 mt7530_setup_mdio_irq(struct mt7530_priv *priv)
1994 struct dsa_switch *ds = priv->ds;
1997 for (p = 0; p < MT7530_NUM_PHYS; p++) {
1998 if (BIT(p) & ds->phys_mii_mask) {
2001 irq = irq_create_mapping(priv->irq_domain, p);
2002 ds->slave_mii_bus->irq[p] = irq;
2008 mt7530_setup_irq(struct mt7530_priv *priv)
2010 struct device *dev = priv->dev;
2011 struct device_node *np = dev->of_node;
2014 if (!of_property_read_bool(np, "interrupt-controller")) {
2015 dev_info(dev, "no interrupt support\n");
2019 priv->irq = of_irq_get(np, 0);
2020 if (priv->irq <= 0) {
2021 dev_err(dev, "failed to get parent IRQ: %d\n", priv->irq);
2022 return priv->irq ? : -EINVAL;
2025 priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
2026 &mt7530_irq_domain_ops, priv);
2027 if (!priv->irq_domain) {
2028 dev_err(dev, "failed to create IRQ domain\n");
2032 /* This register must be set for MT7530 to properly fire interrupts */
2033 if (priv->id != ID_MT7531)
2034 mt7530_set(priv, MT7530_TOP_SIG_CTRL, TOP_SIG_CTRL_NORMAL);
2036 ret = request_threaded_irq(priv->irq, NULL, mt7530_irq_thread_fn,
2037 IRQF_ONESHOT, KBUILD_MODNAME, priv);
2039 irq_domain_remove(priv->irq_domain);
2040 dev_err(dev, "failed to request IRQ: %d\n", ret);
2048 mt7530_free_mdio_irq(struct mt7530_priv *priv)
2052 for (p = 0; p < MT7530_NUM_PHYS; p++) {
2053 if (BIT(p) & priv->ds->phys_mii_mask) {
2056 irq = irq_find_mapping(priv->irq_domain, p);
2057 irq_dispose_mapping(irq);
2063 mt7530_free_irq_common(struct mt7530_priv *priv)
2065 free_irq(priv->irq, priv);
2066 irq_domain_remove(priv->irq_domain);
2070 mt7530_free_irq(struct mt7530_priv *priv)
2072 mt7530_free_mdio_irq(priv);
2073 mt7530_free_irq_common(priv);
2077 mt7530_setup_mdio(struct mt7530_priv *priv)
2079 struct dsa_switch *ds = priv->ds;
2080 struct device *dev = priv->dev;
2081 struct mii_bus *bus;
2085 bus = devm_mdiobus_alloc(dev);
2089 ds->slave_mii_bus = bus;
2091 bus->name = KBUILD_MODNAME "-mii";
2092 snprintf(bus->id, MII_BUS_ID_SIZE, KBUILD_MODNAME "-%d", idx++);
2093 bus->read = mt753x_phy_read_c22;
2094 bus->write = mt753x_phy_write_c22;
2095 bus->read_c45 = mt753x_phy_read_c45;
2096 bus->write_c45 = mt753x_phy_write_c45;
2098 bus->phy_mask = ~ds->phys_mii_mask;
2101 mt7530_setup_mdio_irq(priv);
2103 ret = devm_mdiobus_register(dev, bus);
2105 dev_err(dev, "failed to register MDIO bus: %d\n", ret);
2107 mt7530_free_mdio_irq(priv);
2114 mt7530_setup(struct dsa_switch *ds)
2116 struct mt7530_priv *priv = ds->priv;
2117 struct device_node *dn = NULL;
2118 struct device_node *phy_node;
2119 struct device_node *mac_np;
2120 struct mt7530_dummy_poll p;
2121 phy_interface_t interface;
2122 struct dsa_port *cpu_dp;
2126 /* The parent node of master netdev which holds the common system
2127 * controller also is the container for two GMACs nodes representing
2128 * as two netdev instances.
2130 dsa_switch_for_each_cpu_port(cpu_dp, ds) {
2131 dn = cpu_dp->master->dev.of_node->parent;
2132 /* It doesn't matter which CPU port is found first,
2133 * their masters should share the same parent OF node
2139 dev_err(ds->dev, "parent OF node of DSA master not found");
2143 ds->assisted_learning_on_cpu_port = true;
2144 ds->mtu_enforcement_ingress = true;
2146 if (priv->id == ID_MT7530) {
2147 regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
2148 ret = regulator_enable(priv->core_pwr);
2151 "Failed to enable core power: %d\n", ret);
2155 regulator_set_voltage(priv->io_pwr, 3300000, 3300000);
2156 ret = regulator_enable(priv->io_pwr);
2158 dev_err(priv->dev, "Failed to enable io pwr: %d\n",
2164 /* Reset whole chip through gpio pin or memory-mapped registers for
2165 * different type of hardware
2168 reset_control_assert(priv->rstc);
2169 usleep_range(1000, 1100);
2170 reset_control_deassert(priv->rstc);
2172 gpiod_set_value_cansleep(priv->reset, 0);
2173 usleep_range(1000, 1100);
2174 gpiod_set_value_cansleep(priv->reset, 1);
2177 /* Waiting for MT7530 got to stable */
2178 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
2179 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
2182 dev_err(priv->dev, "reset timeout\n");
2186 id = mt7530_read(priv, MT7530_CREV);
2187 id >>= CHIP_NAME_SHIFT;
2188 if (id != MT7530_ID) {
2189 dev_err(priv->dev, "chip %x can't be supported\n", id);
2193 /* Reset the switch through internal reset */
2194 mt7530_write(priv, MT7530_SYS_CTRL,
2195 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
2198 mt7530_pll_setup(priv);
2200 /* Lower Tx driving for TRGMII path */
2201 for (i = 0; i < NUM_TRGMII_CTRL; i++)
2202 mt7530_write(priv, MT7530_TRGMII_TD_ODT(i),
2203 TD_DM_DRVP(8) | TD_DM_DRVN(8));
2205 for (i = 0; i < NUM_TRGMII_CTRL; i++)
2206 mt7530_rmw(priv, MT7530_TRGMII_RD(i),
2207 RD_TAP_MASK, RD_TAP(16));
2210 val = mt7530_read(priv, MT7530_MHWTRAP);
2211 val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
2212 val |= MHWTRAP_MANUAL;
2213 mt7530_write(priv, MT7530_MHWTRAP, val);
2215 priv->p6_interface = PHY_INTERFACE_MODE_NA;
2217 /* Enable and reset MIB counters */
2218 mt7530_mib_reset(ds);
2220 for (i = 0; i < MT7530_NUM_PORTS; i++) {
2221 /* Disable forwarding by default on all ports */
2222 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
2225 /* Disable learning by default on all ports */
2226 mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
2228 if (dsa_is_cpu_port(ds, i)) {
2229 ret = mt753x_cpu_port_enable(ds, i);
2233 mt7530_port_disable(ds, i);
2235 /* Set default PVID to 0 on all user ports */
2236 mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
2239 /* Enable consistent egress tag */
2240 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
2241 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
2244 /* Setup VLAN ID 0 for VLAN-unaware bridges */
2245 ret = mt7530_setup_vlan0(priv);
2250 priv->p5_intf_sel = P5_DISABLED;
2251 interface = PHY_INTERFACE_MODE_NA;
2253 if (!dsa_is_unused_port(ds, 5)) {
2254 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
2255 ret = of_get_phy_mode(dsa_to_port(ds, 5)->dn, &interface);
2256 if (ret && ret != -ENODEV)
2259 /* Scan the ethernet nodes. look for GMAC1, lookup used phy */
2260 for_each_child_of_node(dn, mac_np) {
2261 if (!of_device_is_compatible(mac_np,
2262 "mediatek,eth-mac"))
2265 ret = of_property_read_u32(mac_np, "reg", &id);
2266 if (ret < 0 || id != 1)
2269 phy_node = of_parse_phandle(mac_np, "phy-handle", 0);
2273 if (phy_node->parent == priv->dev->of_node->parent) {
2274 ret = of_get_phy_mode(mac_np, &interface);
2275 if (ret && ret != -ENODEV) {
2276 of_node_put(mac_np);
2277 of_node_put(phy_node);
2280 id = of_mdio_parse_addr(ds->dev, phy_node);
2282 priv->p5_intf_sel = P5_INTF_SEL_PHY_P0;
2284 priv->p5_intf_sel = P5_INTF_SEL_PHY_P4;
2286 of_node_put(mac_np);
2287 of_node_put(phy_node);
2292 #ifdef CONFIG_GPIOLIB
2293 if (of_property_read_bool(priv->dev->of_node, "gpio-controller")) {
2294 ret = mt7530_setup_gpio(priv);
2298 #endif /* CONFIG_GPIOLIB */
2300 mt7530_setup_port5(ds, interface);
2302 /* Flush the FDB table */
2303 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
2311 mt7531_setup(struct dsa_switch *ds)
2313 struct mt7530_priv *priv = ds->priv;
2314 struct mt7530_dummy_poll p;
2315 struct dsa_port *cpu_dp;
2319 /* Reset whole chip through gpio pin or memory-mapped registers for
2320 * different type of hardware
2323 reset_control_assert(priv->rstc);
2324 usleep_range(1000, 1100);
2325 reset_control_deassert(priv->rstc);
2327 gpiod_set_value_cansleep(priv->reset, 0);
2328 usleep_range(1000, 1100);
2329 gpiod_set_value_cansleep(priv->reset, 1);
2332 /* Waiting for MT7530 got to stable */
2333 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
2334 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
2337 dev_err(priv->dev, "reset timeout\n");
2341 id = mt7530_read(priv, MT7531_CREV);
2342 id >>= CHIP_NAME_SHIFT;
2344 if (id != MT7531_ID) {
2345 dev_err(priv->dev, "chip %x can't be supported\n", id);
2349 /* all MACs must be forced link-down before sw reset */
2350 for (i = 0; i < MT7530_NUM_PORTS; i++)
2351 mt7530_write(priv, MT7530_PMCR_P(i), MT7531_FORCE_LNK);
2353 /* Reset the switch through internal reset */
2354 mt7530_write(priv, MT7530_SYS_CTRL,
2355 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
2358 mt7531_pll_setup(priv);
2360 if (mt7531_dual_sgmii_supported(priv)) {
2361 priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII;
2363 /* Let ds->slave_mii_bus be able to access external phy. */
2364 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK,
2365 MT7531_EXT_P_MDC_11);
2366 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK,
2367 MT7531_EXT_P_MDIO_12);
2369 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
2371 dev_dbg(ds->dev, "P5 support %s interface\n",
2372 p5_intf_modes(priv->p5_intf_sel));
2374 mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK,
2375 MT7531_GPIO0_INTERRUPT);
2377 /* Let phylink decide the interface later. */
2378 priv->p5_interface = PHY_INTERFACE_MODE_NA;
2379 priv->p6_interface = PHY_INTERFACE_MODE_NA;
2381 /* Enable PHY core PLL, since phy_device has not yet been created
2382 * provided for phy_[read,write]_mmd_indirect is called, we provide
2383 * our own mt7531_ind_mmd_phy_[read,write] to complete this
2386 val = mt7531_ind_c45_phy_read(priv, MT753X_CTRL_PHY_ADDR,
2387 MDIO_MMD_VEND2, CORE_PLL_GROUP4);
2388 val |= MT7531_PHY_PLL_BYPASS_MODE;
2389 val &= ~MT7531_PHY_PLL_OFF;
2390 mt7531_ind_c45_phy_write(priv, MT753X_CTRL_PHY_ADDR, MDIO_MMD_VEND2,
2391 CORE_PLL_GROUP4, val);
2393 /* BPDU to CPU port */
2394 dsa_switch_for_each_cpu_port(cpu_dp, ds) {
2395 mt7530_rmw(priv, MT7531_CFC, MT7531_CPU_PMAP_MASK,
2396 BIT(cpu_dp->index));
2399 mt7530_rmw(priv, MT753X_BPC, MT753X_BPDU_PORT_FW_MASK,
2400 MT753X_BPDU_CPU_ONLY);
2402 /* Enable and reset MIB counters */
2403 mt7530_mib_reset(ds);
2405 for (i = 0; i < MT7530_NUM_PORTS; i++) {
2406 /* Disable forwarding by default on all ports */
2407 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
2410 /* Disable learning by default on all ports */
2411 mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
2413 mt7530_set(priv, MT7531_DBG_CNT(i), MT7531_DIS_CLR);
2415 if (dsa_is_cpu_port(ds, i)) {
2416 ret = mt753x_cpu_port_enable(ds, i);
2420 mt7530_port_disable(ds, i);
2422 /* Set default PVID to 0 on all user ports */
2423 mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
2427 /* Enable consistent egress tag */
2428 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
2429 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
2432 /* Setup VLAN ID 0 for VLAN-unaware bridges */
2433 ret = mt7530_setup_vlan0(priv);
2437 ds->assisted_learning_on_cpu_port = true;
2438 ds->mtu_enforcement_ingress = true;
2440 /* Flush the FDB table */
2441 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
2448 static void mt7530_mac_port_get_caps(struct dsa_switch *ds, int port,
2449 struct phylink_config *config)
2452 case 0 ... 4: /* Internal phy */
2453 __set_bit(PHY_INTERFACE_MODE_GMII,
2454 config->supported_interfaces);
2457 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
2458 phy_interface_set_rgmii(config->supported_interfaces);
2459 __set_bit(PHY_INTERFACE_MODE_MII,
2460 config->supported_interfaces);
2461 __set_bit(PHY_INTERFACE_MODE_GMII,
2462 config->supported_interfaces);
2465 case 6: /* 1st cpu port */
2466 __set_bit(PHY_INTERFACE_MODE_RGMII,
2467 config->supported_interfaces);
2468 __set_bit(PHY_INTERFACE_MODE_TRGMII,
2469 config->supported_interfaces);
2474 static bool mt7531_is_rgmii_port(struct mt7530_priv *priv, u32 port)
2476 return (port == 5) && (priv->p5_intf_sel != P5_INTF_SEL_GMAC5_SGMII);
2479 static void mt7531_mac_port_get_caps(struct dsa_switch *ds, int port,
2480 struct phylink_config *config)
2482 struct mt7530_priv *priv = ds->priv;
2485 case 0 ... 4: /* Internal phy */
2486 __set_bit(PHY_INTERFACE_MODE_GMII,
2487 config->supported_interfaces);
2490 case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */
2491 if (mt7531_is_rgmii_port(priv, port)) {
2492 phy_interface_set_rgmii(config->supported_interfaces);
2497 case 6: /* 1st cpu port supports sgmii/8023z only */
2498 __set_bit(PHY_INTERFACE_MODE_SGMII,
2499 config->supported_interfaces);
2500 __set_bit(PHY_INTERFACE_MODE_1000BASEX,
2501 config->supported_interfaces);
2502 __set_bit(PHY_INTERFACE_MODE_2500BASEX,
2503 config->supported_interfaces);
2505 config->mac_capabilities |= MAC_2500FD;
2511 mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state)
2513 struct mt7530_priv *priv = ds->priv;
2515 return priv->info->pad_setup(ds, state->interface);
2519 mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2520 phy_interface_t interface)
2522 struct mt7530_priv *priv = ds->priv;
2524 /* Only need to setup port5. */
2528 mt7530_setup_port5(priv->ds, interface);
2533 static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port,
2534 phy_interface_t interface,
2535 struct phy_device *phydev)
2539 if (!mt7531_is_rgmii_port(priv, port)) {
2540 dev_err(priv->dev, "RGMII mode is not available for port %d\n",
2545 val = mt7530_read(priv, MT7531_CLKGEN_CTRL);
2547 val &= ~GP_MODE_MASK;
2548 val |= GP_MODE(MT7531_GP_MODE_RGMII);
2549 val &= ~CLK_SKEW_IN_MASK;
2550 val |= CLK_SKEW_IN(MT7531_CLK_SKEW_NO_CHG);
2551 val &= ~CLK_SKEW_OUT_MASK;
2552 val |= CLK_SKEW_OUT(MT7531_CLK_SKEW_NO_CHG);
2553 val |= TXCLK_NO_REVERSE | RXCLK_NO_DELAY;
2555 /* Do not adjust rgmii delay when vendor phy driver presents. */
2556 if (!phydev || phy_driver_is_genphy(phydev)) {
2557 val &= ~(TXCLK_NO_REVERSE | RXCLK_NO_DELAY);
2558 switch (interface) {
2559 case PHY_INTERFACE_MODE_RGMII:
2560 val |= TXCLK_NO_REVERSE;
2561 val |= RXCLK_NO_DELAY;
2563 case PHY_INTERFACE_MODE_RGMII_RXID:
2564 val |= TXCLK_NO_REVERSE;
2566 case PHY_INTERFACE_MODE_RGMII_TXID:
2567 val |= RXCLK_NO_DELAY;
2569 case PHY_INTERFACE_MODE_RGMII_ID:
2575 mt7530_write(priv, MT7531_CLKGEN_CTRL, val);
2580 static void mt7531_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
2581 phy_interface_t interface, int speed, int duplex)
2583 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
2584 int port = pcs_to_mt753x_pcs(pcs)->port;
2587 /* For adjusting speed and duplex of SGMII force mode. */
2588 if (interface != PHY_INTERFACE_MODE_SGMII ||
2589 phylink_autoneg_inband(mode))
2592 /* SGMII force mode setting */
2593 val = mt7530_read(priv, MT7531_SGMII_MODE(port));
2594 val &= ~MT7531_SGMII_IF_MODE_MASK;
2598 val |= MT7531_SGMII_FORCE_SPEED_10;
2601 val |= MT7531_SGMII_FORCE_SPEED_100;
2604 val |= MT7531_SGMII_FORCE_SPEED_1000;
2608 /* MT7531 SGMII 1G force mode can only work in full duplex mode,
2609 * no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
2611 * The speed check is unnecessary as the MAC capabilities apply
2612 * this restriction. --rmk
2614 if ((speed == SPEED_10 || speed == SPEED_100) &&
2615 duplex != DUPLEX_FULL)
2616 val |= MT7531_SGMII_FORCE_HALF_DUPLEX;
2618 mt7530_write(priv, MT7531_SGMII_MODE(port), val);
2621 static bool mt753x_is_mac_port(u32 port)
2623 return (port == 5 || port == 6);
2626 static int mt7531_sgmii_setup_mode_force(struct mt7530_priv *priv, u32 port,
2627 phy_interface_t interface)
2631 if (!mt753x_is_mac_port(port))
2634 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
2635 MT7531_SGMII_PHYA_PWD);
2637 val = mt7530_read(priv, MT7531_PHYA_CTRL_SIGNAL3(port));
2638 val &= ~MT7531_RG_TPHY_SPEED_MASK;
2639 /* Setup 2.5 times faster clock for 2.5Gbps data speeds with 10B/8B
2642 val |= (interface == PHY_INTERFACE_MODE_2500BASEX) ?
2643 MT7531_RG_TPHY_SPEED_3_125G : MT7531_RG_TPHY_SPEED_1_25G;
2644 mt7530_write(priv, MT7531_PHYA_CTRL_SIGNAL3(port), val);
2646 mt7530_clear(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
2648 /* MT7531 SGMII 1G and 2.5G force mode can only work in full duplex
2649 * mode, no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
2651 mt7530_rmw(priv, MT7531_SGMII_MODE(port),
2652 MT7531_SGMII_IF_MODE_MASK | MT7531_SGMII_REMOTE_FAULT_DIS,
2653 MT7531_SGMII_FORCE_SPEED_1000);
2655 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
2660 static int mt7531_sgmii_setup_mode_an(struct mt7530_priv *priv, int port,
2661 phy_interface_t interface)
2663 if (!mt753x_is_mac_port(port))
2666 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
2667 MT7531_SGMII_PHYA_PWD);
2669 mt7530_rmw(priv, MT7531_PHYA_CTRL_SIGNAL3(port),
2670 MT7531_RG_TPHY_SPEED_MASK, MT7531_RG_TPHY_SPEED_1_25G);
2672 mt7530_set(priv, MT7531_SGMII_MODE(port),
2673 MT7531_SGMII_REMOTE_FAULT_DIS |
2674 MT7531_SGMII_SPEED_DUPLEX_AN);
2676 mt7530_rmw(priv, MT7531_PCS_SPEED_ABILITY(port),
2677 MT7531_SGMII_TX_CONFIG_MASK, 1);
2679 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
2681 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_RESTART);
2683 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
2688 static void mt7531_pcs_an_restart(struct phylink_pcs *pcs)
2690 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
2691 int port = pcs_to_mt753x_pcs(pcs)->port;
2694 /* Only restart AN when AN is enabled */
2695 val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
2696 if (val & MT7531_SGMII_AN_ENABLE) {
2697 val |= MT7531_SGMII_AN_RESTART;
2698 mt7530_write(priv, MT7531_PCS_CONTROL_1(port), val);
2703 mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2704 phy_interface_t interface)
2706 struct mt7530_priv *priv = ds->priv;
2707 struct phy_device *phydev;
2708 struct dsa_port *dp;
2710 if (!mt753x_is_mac_port(port)) {
2711 dev_err(priv->dev, "port %d is not a MAC port\n", port);
2715 switch (interface) {
2716 case PHY_INTERFACE_MODE_RGMII:
2717 case PHY_INTERFACE_MODE_RGMII_ID:
2718 case PHY_INTERFACE_MODE_RGMII_RXID:
2719 case PHY_INTERFACE_MODE_RGMII_TXID:
2720 dp = dsa_to_port(ds, port);
2721 phydev = dp->slave->phydev;
2722 return mt7531_rgmii_setup(priv, port, interface, phydev);
2723 case PHY_INTERFACE_MODE_SGMII:
2724 return mt7531_sgmii_setup_mode_an(priv, port, interface);
2725 case PHY_INTERFACE_MODE_NA:
2726 case PHY_INTERFACE_MODE_1000BASEX:
2727 case PHY_INTERFACE_MODE_2500BASEX:
2728 return mt7531_sgmii_setup_mode_force(priv, port, interface);
2737 mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2738 const struct phylink_link_state *state)
2740 struct mt7530_priv *priv = ds->priv;
2742 return priv->info->mac_port_config(ds, port, mode, state->interface);
2745 static struct phylink_pcs *
2746 mt753x_phylink_mac_select_pcs(struct dsa_switch *ds, int port,
2747 phy_interface_t interface)
2749 struct mt7530_priv *priv = ds->priv;
2751 switch (interface) {
2752 case PHY_INTERFACE_MODE_TRGMII:
2753 case PHY_INTERFACE_MODE_SGMII:
2754 case PHY_INTERFACE_MODE_1000BASEX:
2755 case PHY_INTERFACE_MODE_2500BASEX:
2756 return &priv->pcs[port].pcs;
2764 mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2765 const struct phylink_link_state *state)
2767 struct mt7530_priv *priv = ds->priv;
2768 u32 mcr_cur, mcr_new;
2771 case 0 ... 4: /* Internal phy */
2772 if (state->interface != PHY_INTERFACE_MODE_GMII)
2775 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
2776 if (priv->p5_interface == state->interface)
2779 if (mt753x_mac_config(ds, port, mode, state) < 0)
2782 if (priv->p5_intf_sel != P5_DISABLED)
2783 priv->p5_interface = state->interface;
2785 case 6: /* 1st cpu port */
2786 if (priv->p6_interface == state->interface)
2789 mt753x_pad_setup(ds, state);
2791 if (mt753x_mac_config(ds, port, mode, state) < 0)
2794 priv->p6_interface = state->interface;
2798 dev_err(ds->dev, "%s: unsupported %s port: %i\n",
2799 __func__, phy_modes(state->interface), port);
2803 mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port));
2805 mcr_new &= ~PMCR_LINK_SETTINGS_MASK;
2806 mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN |
2807 PMCR_BACKPR_EN | PMCR_FORCE_MODE_ID(priv->id);
2809 /* Are we connected to external phy */
2810 if (port == 5 && dsa_is_user_port(ds, 5))
2811 mcr_new |= PMCR_EXT_PHY;
2813 if (mcr_new != mcr_cur)
2814 mt7530_write(priv, MT7530_PMCR_P(port), mcr_new);
2817 static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
2819 phy_interface_t interface)
2821 struct mt7530_priv *priv = ds->priv;
2823 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
2826 static void mt753x_phylink_pcs_link_up(struct phylink_pcs *pcs,
2828 phy_interface_t interface,
2829 int speed, int duplex)
2831 if (pcs->ops->pcs_link_up)
2832 pcs->ops->pcs_link_up(pcs, mode, interface, speed, duplex);
2835 static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port,
2837 phy_interface_t interface,
2838 struct phy_device *phydev,
2839 int speed, int duplex,
2840 bool tx_pause, bool rx_pause)
2842 struct mt7530_priv *priv = ds->priv;
2845 mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK;
2847 /* MT753x MAC works in 1G full duplex mode for all up-clocked
2850 if (interface == PHY_INTERFACE_MODE_TRGMII ||
2851 (phy_interface_mode_is_8023z(interface))) {
2853 duplex = DUPLEX_FULL;
2858 mcr |= PMCR_FORCE_SPEED_1000;
2861 mcr |= PMCR_FORCE_SPEED_100;
2864 if (duplex == DUPLEX_FULL) {
2865 mcr |= PMCR_FORCE_FDX;
2867 mcr |= PMCR_TX_FC_EN;
2869 mcr |= PMCR_RX_FC_EN;
2872 if (mode == MLO_AN_PHY && phydev && phy_init_eee(phydev, false) >= 0) {
2875 mcr |= PMCR_FORCE_EEE1G;
2878 mcr |= PMCR_FORCE_EEE100;
2883 mt7530_set(priv, MT7530_PMCR_P(port), mcr);
2887 mt7531_cpu_port_config(struct dsa_switch *ds, int port)
2889 struct mt7530_priv *priv = ds->priv;
2890 phy_interface_t interface;
2896 if (mt7531_is_rgmii_port(priv, port))
2897 interface = PHY_INTERFACE_MODE_RGMII;
2899 interface = PHY_INTERFACE_MODE_2500BASEX;
2901 priv->p5_interface = interface;
2904 interface = PHY_INTERFACE_MODE_2500BASEX;
2906 priv->p6_interface = interface;
2912 if (interface == PHY_INTERFACE_MODE_2500BASEX)
2917 ret = mt7531_mac_config(ds, port, MLO_AN_FIXED, interface);
2920 mt7530_write(priv, MT7530_PMCR_P(port),
2921 PMCR_CPU_PORT_SETTING(priv->id));
2922 mt753x_phylink_pcs_link_up(&priv->pcs[port].pcs, MLO_AN_FIXED,
2923 interface, speed, DUPLEX_FULL);
2924 mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL,
2925 speed, DUPLEX_FULL, true, true);
2930 static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port,
2931 struct phylink_config *config)
2933 struct mt7530_priv *priv = ds->priv;
2935 /* This switch only supports full-duplex at 1Gbps */
2936 config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
2937 MAC_10 | MAC_100 | MAC_1000FD;
2939 /* This driver does not make use of the speed, duplex, pause or the
2940 * advertisement in its mac_config, so it is safe to mark this driver
2943 config->legacy_pre_march2020 = false;
2945 priv->info->mac_port_get_caps(ds, port, config);
2948 static int mt753x_pcs_validate(struct phylink_pcs *pcs,
2949 unsigned long *supported,
2950 const struct phylink_link_state *state)
2952 /* Autonegotiation is not supported in TRGMII nor 802.3z modes */
2953 if (state->interface == PHY_INTERFACE_MODE_TRGMII ||
2954 phy_interface_mode_is_8023z(state->interface))
2955 phylink_clear(supported, Autoneg);
2960 static void mt7530_pcs_get_state(struct phylink_pcs *pcs,
2961 struct phylink_link_state *state)
2963 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
2964 int port = pcs_to_mt753x_pcs(pcs)->port;
2967 pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
2969 state->link = (pmsr & PMSR_LINK);
2970 state->an_complete = state->link;
2971 state->duplex = !!(pmsr & PMSR_DPX);
2973 switch (pmsr & PMSR_SPEED_MASK) {
2975 state->speed = SPEED_10;
2977 case PMSR_SPEED_100:
2978 state->speed = SPEED_100;
2980 case PMSR_SPEED_1000:
2981 state->speed = SPEED_1000;
2984 state->speed = SPEED_UNKNOWN;
2988 state->pause &= ~(MLO_PAUSE_RX | MLO_PAUSE_TX);
2989 if (pmsr & PMSR_RX_FC)
2990 state->pause |= MLO_PAUSE_RX;
2991 if (pmsr & PMSR_TX_FC)
2992 state->pause |= MLO_PAUSE_TX;
2996 mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port,
2997 struct phylink_link_state *state)
3002 status = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
3003 state->link = !!(status & MT7531_SGMII_LINK_STATUS);
3004 state->an_complete = !!(status & MT7531_SGMII_AN_COMPLETE);
3005 if (state->interface == PHY_INTERFACE_MODE_SGMII &&
3006 (status & MT7531_SGMII_AN_ENABLE)) {
3007 val = mt7530_read(priv, MT7531_PCS_SPEED_ABILITY(port));
3008 config_reg = val >> 16;
3010 switch (config_reg & LPA_SGMII_SPD_MASK) {
3011 case LPA_SGMII_1000:
3012 state->speed = SPEED_1000;
3015 state->speed = SPEED_100;
3018 state->speed = SPEED_10;
3021 dev_err(priv->dev, "invalid sgmii PHY speed\n");
3022 state->link = false;
3026 if (config_reg & LPA_SGMII_FULL_DUPLEX)
3027 state->duplex = DUPLEX_FULL;
3029 state->duplex = DUPLEX_HALF;
3036 mt7531_sgmii_pcs_get_state_inband(struct mt7530_priv *priv, int port,
3037 struct phylink_link_state *state)
3041 val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
3042 state->link = !!(val & MT7531_SGMII_LINK_STATUS);
3046 state->an_complete = state->link;
3048 if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
3049 state->speed = SPEED_2500;
3051 state->speed = SPEED_1000;
3053 state->duplex = DUPLEX_FULL;
3054 state->pause = MLO_PAUSE_NONE;
3057 static void mt7531_pcs_get_state(struct phylink_pcs *pcs,
3058 struct phylink_link_state *state)
3060 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
3061 int port = pcs_to_mt753x_pcs(pcs)->port;
3063 if (state->interface == PHY_INTERFACE_MODE_SGMII) {
3064 mt7531_sgmii_pcs_get_state_an(priv, port, state);
3066 } else if ((state->interface == PHY_INTERFACE_MODE_1000BASEX) ||
3067 (state->interface == PHY_INTERFACE_MODE_2500BASEX)) {
3068 mt7531_sgmii_pcs_get_state_inband(priv, port, state);
3072 state->link = false;
3075 static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
3076 phy_interface_t interface,
3077 const unsigned long *advertising,
3078 bool permit_pause_to_mac)
3083 static void mt7530_pcs_an_restart(struct phylink_pcs *pcs)
3087 static const struct phylink_pcs_ops mt7530_pcs_ops = {
3088 .pcs_validate = mt753x_pcs_validate,
3089 .pcs_get_state = mt7530_pcs_get_state,
3090 .pcs_config = mt753x_pcs_config,
3091 .pcs_an_restart = mt7530_pcs_an_restart,
3094 static const struct phylink_pcs_ops mt7531_pcs_ops = {
3095 .pcs_validate = mt753x_pcs_validate,
3096 .pcs_get_state = mt7531_pcs_get_state,
3097 .pcs_config = mt753x_pcs_config,
3098 .pcs_an_restart = mt7531_pcs_an_restart,
3099 .pcs_link_up = mt7531_pcs_link_up,
3103 mt753x_setup(struct dsa_switch *ds)
3105 struct mt7530_priv *priv = ds->priv;
3108 /* Initialise the PCS devices */
3109 for (i = 0; i < priv->ds->num_ports; i++) {
3110 priv->pcs[i].pcs.ops = priv->info->pcs_ops;
3111 priv->pcs[i].priv = priv;
3112 priv->pcs[i].port = i;
3113 if (mt753x_is_mac_port(i))
3114 priv->pcs[i].pcs.poll = 1;
3117 ret = priv->info->sw_setup(ds);
3121 ret = mt7530_setup_irq(priv);
3125 ret = mt7530_setup_mdio(priv);
3126 if (ret && priv->irq)
3127 mt7530_free_irq_common(priv);
3132 static int mt753x_get_mac_eee(struct dsa_switch *ds, int port,
3133 struct ethtool_eee *e)
3135 struct mt7530_priv *priv = ds->priv;
3136 u32 eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
3138 e->tx_lpi_enabled = !(eeecr & LPI_MODE_EN);
3139 e->tx_lpi_timer = GET_LPI_THRESH(eeecr);
3144 static int mt753x_set_mac_eee(struct dsa_switch *ds, int port,
3145 struct ethtool_eee *e)
3147 struct mt7530_priv *priv = ds->priv;
3148 u32 set, mask = LPI_THRESH_MASK | LPI_MODE_EN;
3150 if (e->tx_lpi_timer > 0xFFF)
3153 set = SET_LPI_THRESH(e->tx_lpi_timer);
3154 if (!e->tx_lpi_enabled)
3155 /* Force LPI Mode without a delay */
3157 mt7530_rmw(priv, MT7530_PMEEECR_P(port), mask, set);
3162 static const struct dsa_switch_ops mt7530_switch_ops = {
3163 .get_tag_protocol = mtk_get_tag_protocol,
3164 .setup = mt753x_setup,
3165 .get_strings = mt7530_get_strings,
3166 .get_ethtool_stats = mt7530_get_ethtool_stats,
3167 .get_sset_count = mt7530_get_sset_count,
3168 .set_ageing_time = mt7530_set_ageing_time,
3169 .port_enable = mt7530_port_enable,
3170 .port_disable = mt7530_port_disable,
3171 .port_change_mtu = mt7530_port_change_mtu,
3172 .port_max_mtu = mt7530_port_max_mtu,
3173 .port_stp_state_set = mt7530_stp_state_set,
3174 .port_pre_bridge_flags = mt7530_port_pre_bridge_flags,
3175 .port_bridge_flags = mt7530_port_bridge_flags,
3176 .port_bridge_join = mt7530_port_bridge_join,
3177 .port_bridge_leave = mt7530_port_bridge_leave,
3178 .port_fdb_add = mt7530_port_fdb_add,
3179 .port_fdb_del = mt7530_port_fdb_del,
3180 .port_fdb_dump = mt7530_port_fdb_dump,
3181 .port_mdb_add = mt7530_port_mdb_add,
3182 .port_mdb_del = mt7530_port_mdb_del,
3183 .port_vlan_filtering = mt7530_port_vlan_filtering,
3184 .port_vlan_add = mt7530_port_vlan_add,
3185 .port_vlan_del = mt7530_port_vlan_del,
3186 .port_mirror_add = mt753x_port_mirror_add,
3187 .port_mirror_del = mt753x_port_mirror_del,
3188 .phylink_get_caps = mt753x_phylink_get_caps,
3189 .phylink_mac_select_pcs = mt753x_phylink_mac_select_pcs,
3190 .phylink_mac_config = mt753x_phylink_mac_config,
3191 .phylink_mac_link_down = mt753x_phylink_mac_link_down,
3192 .phylink_mac_link_up = mt753x_phylink_mac_link_up,
3193 .get_mac_eee = mt753x_get_mac_eee,
3194 .set_mac_eee = mt753x_set_mac_eee,
3197 static const struct mt753x_info mt753x_table[] = {
3200 .pcs_ops = &mt7530_pcs_ops,
3201 .sw_setup = mt7530_setup,
3202 .phy_read_c22 = mt7530_phy_read_c22,
3203 .phy_write_c22 = mt7530_phy_write_c22,
3204 .phy_read_c45 = mt7530_phy_read_c45,
3205 .phy_write_c45 = mt7530_phy_write_c45,
3206 .pad_setup = mt7530_pad_clk_setup,
3207 .mac_port_get_caps = mt7530_mac_port_get_caps,
3208 .mac_port_config = mt7530_mac_config,
3212 .pcs_ops = &mt7530_pcs_ops,
3213 .sw_setup = mt7530_setup,
3214 .phy_read_c22 = mt7530_phy_read_c22,
3215 .phy_write_c22 = mt7530_phy_write_c22,
3216 .phy_read_c45 = mt7530_phy_read_c45,
3217 .phy_write_c45 = mt7530_phy_write_c45,
3218 .pad_setup = mt7530_pad_clk_setup,
3219 .mac_port_get_caps = mt7530_mac_port_get_caps,
3220 .mac_port_config = mt7530_mac_config,
3224 .pcs_ops = &mt7531_pcs_ops,
3225 .sw_setup = mt7531_setup,
3226 .phy_read_c22 = mt7531_ind_c22_phy_read,
3227 .phy_write_c22 = mt7531_ind_c22_phy_write,
3228 .phy_read_c45 = mt7531_ind_c45_phy_read,
3229 .phy_write_c45 = mt7531_ind_c45_phy_write,
3230 .pad_setup = mt7531_pad_setup,
3231 .cpu_port_config = mt7531_cpu_port_config,
3232 .mac_port_get_caps = mt7531_mac_port_get_caps,
3233 .mac_port_config = mt7531_mac_config,
3237 static const struct of_device_id mt7530_of_match[] = {
3238 { .compatible = "mediatek,mt7621", .data = &mt753x_table[ID_MT7621], },
3239 { .compatible = "mediatek,mt7530", .data = &mt753x_table[ID_MT7530], },
3240 { .compatible = "mediatek,mt7531", .data = &mt753x_table[ID_MT7531], },
3243 MODULE_DEVICE_TABLE(of, mt7530_of_match);
3246 mt7530_probe(struct mdio_device *mdiodev)
3248 struct mt7530_priv *priv;
3249 struct device_node *dn;
3251 dn = mdiodev->dev.of_node;
3253 priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL);
3257 priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL);
3261 priv->ds->dev = &mdiodev->dev;
3262 priv->ds->num_ports = MT7530_NUM_PORTS;
3264 /* Use medatek,mcm property to distinguish hardware type that would
3265 * casues a little bit differences on power-on sequence.
3267 priv->mcm = of_property_read_bool(dn, "mediatek,mcm");
3269 dev_info(&mdiodev->dev, "MT7530 adapts as multi-chip module\n");
3271 priv->rstc = devm_reset_control_get(&mdiodev->dev, "mcm");
3272 if (IS_ERR(priv->rstc)) {
3273 dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
3274 return PTR_ERR(priv->rstc);
3278 /* Get the hardware identifier from the devicetree node.
3279 * We will need it for some of the clock and regulator setup.
3281 priv->info = of_device_get_match_data(&mdiodev->dev);
3285 /* Sanity check if these required device operations are filled
3288 if (!priv->info->sw_setup || !priv->info->pad_setup ||
3289 !priv->info->phy_read_c22 || !priv->info->phy_write_c22 ||
3290 !priv->info->mac_port_get_caps ||
3291 !priv->info->mac_port_config)
3294 priv->id = priv->info->id;
3296 if (priv->id == ID_MT7530) {
3297 priv->core_pwr = devm_regulator_get(&mdiodev->dev, "core");
3298 if (IS_ERR(priv->core_pwr))
3299 return PTR_ERR(priv->core_pwr);
3301 priv->io_pwr = devm_regulator_get(&mdiodev->dev, "io");
3302 if (IS_ERR(priv->io_pwr))
3303 return PTR_ERR(priv->io_pwr);
3306 /* Not MCM that indicates switch works as the remote standalone
3307 * integrated circuit so the GPIO pin would be used to complete
3308 * the reset, otherwise memory-mapped register accessing used
3309 * through syscon provides in the case of MCM.
3312 priv->reset = devm_gpiod_get_optional(&mdiodev->dev, "reset",
3314 if (IS_ERR(priv->reset)) {
3315 dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
3316 return PTR_ERR(priv->reset);
3320 priv->bus = mdiodev->bus;
3321 priv->dev = &mdiodev->dev;
3322 priv->ds->priv = priv;
3323 priv->ds->ops = &mt7530_switch_ops;
3324 mutex_init(&priv->reg_mutex);
3325 dev_set_drvdata(&mdiodev->dev, priv);
3327 return dsa_register_switch(priv->ds);
3331 mt7530_remove(struct mdio_device *mdiodev)
3333 struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
3339 ret = regulator_disable(priv->core_pwr);
3342 "Failed to disable core power: %d\n", ret);
3344 ret = regulator_disable(priv->io_pwr);
3346 dev_err(priv->dev, "Failed to disable io pwr: %d\n",
3350 mt7530_free_irq(priv);
3352 dsa_unregister_switch(priv->ds);
3353 mutex_destroy(&priv->reg_mutex);
3356 static void mt7530_shutdown(struct mdio_device *mdiodev)
3358 struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
3363 dsa_switch_shutdown(priv->ds);
3365 dev_set_drvdata(&mdiodev->dev, NULL);
3368 static struct mdio_driver mt7530_mdio_driver = {
3369 .probe = mt7530_probe,
3370 .remove = mt7530_remove,
3371 .shutdown = mt7530_shutdown,
3374 .of_match_table = mt7530_of_match,
3378 mdio_module_driver(mt7530_mdio_driver);
3380 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
3381 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch");
3382 MODULE_LICENSE("GPL");