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b8f126a8 SW |
1 | /* |
2 | * Mediatek MT7530 DSA Switch driver | |
3 | * Copyright (C) 2017 Sean Wang <sean.wang@mediatek.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | */ | |
14 | #include <linux/etherdevice.h> | |
15 | #include <linux/if_bridge.h> | |
16 | #include <linux/iopoll.h> | |
17 | #include <linux/mdio.h> | |
18 | #include <linux/mfd/syscon.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/netdevice.h> | |
21 | #include <linux/of_gpio.h> | |
22 | #include <linux/of_mdio.h> | |
23 | #include <linux/of_net.h> | |
24 | #include <linux/of_platform.h> | |
25 | #include <linux/phy.h> | |
26 | #include <linux/regmap.h> | |
27 | #include <linux/regulator/consumer.h> | |
28 | #include <linux/reset.h> | |
eb976a55 | 29 | #include <linux/gpio/consumer.h> |
b8f126a8 | 30 | #include <net/dsa.h> |
b8f126a8 SW |
31 | |
32 | #include "mt7530.h" | |
33 | ||
34 | /* String, offset, and register size in bytes if different from 4 bytes */ | |
35 | static const struct mt7530_mib_desc mt7530_mib[] = { | |
36 | MIB_DESC(1, 0x00, "TxDrop"), | |
37 | MIB_DESC(1, 0x04, "TxCrcErr"), | |
38 | MIB_DESC(1, 0x08, "TxUnicast"), | |
39 | MIB_DESC(1, 0x0c, "TxMulticast"), | |
40 | MIB_DESC(1, 0x10, "TxBroadcast"), | |
41 | MIB_DESC(1, 0x14, "TxCollision"), | |
42 | MIB_DESC(1, 0x18, "TxSingleCollision"), | |
43 | MIB_DESC(1, 0x1c, "TxMultipleCollision"), | |
44 | MIB_DESC(1, 0x20, "TxDeferred"), | |
45 | MIB_DESC(1, 0x24, "TxLateCollision"), | |
46 | MIB_DESC(1, 0x28, "TxExcessiveCollistion"), | |
47 | MIB_DESC(1, 0x2c, "TxPause"), | |
48 | MIB_DESC(1, 0x30, "TxPktSz64"), | |
49 | MIB_DESC(1, 0x34, "TxPktSz65To127"), | |
50 | MIB_DESC(1, 0x38, "TxPktSz128To255"), | |
51 | MIB_DESC(1, 0x3c, "TxPktSz256To511"), | |
52 | MIB_DESC(1, 0x40, "TxPktSz512To1023"), | |
53 | MIB_DESC(1, 0x44, "Tx1024ToMax"), | |
54 | MIB_DESC(2, 0x48, "TxBytes"), | |
55 | MIB_DESC(1, 0x60, "RxDrop"), | |
56 | MIB_DESC(1, 0x64, "RxFiltering"), | |
57 | MIB_DESC(1, 0x6c, "RxMulticast"), | |
58 | MIB_DESC(1, 0x70, "RxBroadcast"), | |
59 | MIB_DESC(1, 0x74, "RxAlignErr"), | |
60 | MIB_DESC(1, 0x78, "RxCrcErr"), | |
61 | MIB_DESC(1, 0x7c, "RxUnderSizeErr"), | |
62 | MIB_DESC(1, 0x80, "RxFragErr"), | |
63 | MIB_DESC(1, 0x84, "RxOverSzErr"), | |
64 | MIB_DESC(1, 0x88, "RxJabberErr"), | |
65 | MIB_DESC(1, 0x8c, "RxPause"), | |
66 | MIB_DESC(1, 0x90, "RxPktSz64"), | |
67 | MIB_DESC(1, 0x94, "RxPktSz65To127"), | |
68 | MIB_DESC(1, 0x98, "RxPktSz128To255"), | |
69 | MIB_DESC(1, 0x9c, "RxPktSz256To511"), | |
70 | MIB_DESC(1, 0xa0, "RxPktSz512To1023"), | |
71 | MIB_DESC(1, 0xa4, "RxPktSz1024ToMax"), | |
72 | MIB_DESC(2, 0xa8, "RxBytes"), | |
73 | MIB_DESC(1, 0xb0, "RxCtrlDrop"), | |
74 | MIB_DESC(1, 0xb4, "RxIngressDrop"), | |
75 | MIB_DESC(1, 0xb8, "RxArlDrop"), | |
76 | }; | |
77 | ||
78 | static int | |
79 | mt7623_trgmii_write(struct mt7530_priv *priv, u32 reg, u32 val) | |
80 | { | |
81 | int ret; | |
82 | ||
83 | ret = regmap_write(priv->ethernet, TRGMII_BASE(reg), val); | |
84 | if (ret < 0) | |
85 | dev_err(priv->dev, | |
86 | "failed to priv write register\n"); | |
87 | return ret; | |
88 | } | |
89 | ||
90 | static u32 | |
91 | mt7623_trgmii_read(struct mt7530_priv *priv, u32 reg) | |
92 | { | |
93 | int ret; | |
94 | u32 val; | |
95 | ||
96 | ret = regmap_read(priv->ethernet, TRGMII_BASE(reg), &val); | |
97 | if (ret < 0) { | |
98 | dev_err(priv->dev, | |
99 | "failed to priv read register\n"); | |
100 | return ret; | |
101 | } | |
102 | ||
103 | return val; | |
104 | } | |
105 | ||
106 | static void | |
107 | mt7623_trgmii_rmw(struct mt7530_priv *priv, u32 reg, | |
108 | u32 mask, u32 set) | |
109 | { | |
110 | u32 val; | |
111 | ||
112 | val = mt7623_trgmii_read(priv, reg); | |
113 | val &= ~mask; | |
114 | val |= set; | |
115 | mt7623_trgmii_write(priv, reg, val); | |
116 | } | |
117 | ||
118 | static void | |
119 | mt7623_trgmii_set(struct mt7530_priv *priv, u32 reg, u32 val) | |
120 | { | |
121 | mt7623_trgmii_rmw(priv, reg, 0, val); | |
122 | } | |
123 | ||
124 | static void | |
125 | mt7623_trgmii_clear(struct mt7530_priv *priv, u32 reg, u32 val) | |
126 | { | |
127 | mt7623_trgmii_rmw(priv, reg, val, 0); | |
128 | } | |
129 | ||
130 | static int | |
131 | core_read_mmd_indirect(struct mt7530_priv *priv, int prtad, int devad) | |
132 | { | |
133 | struct mii_bus *bus = priv->bus; | |
134 | int value, ret; | |
135 | ||
136 | /* Write the desired MMD Devad */ | |
137 | ret = bus->write(bus, 0, MII_MMD_CTRL, devad); | |
138 | if (ret < 0) | |
139 | goto err; | |
140 | ||
141 | /* Write the desired MMD register address */ | |
142 | ret = bus->write(bus, 0, MII_MMD_DATA, prtad); | |
143 | if (ret < 0) | |
144 | goto err; | |
145 | ||
146 | /* Select the Function : DATA with no post increment */ | |
147 | ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
148 | if (ret < 0) | |
149 | goto err; | |
150 | ||
151 | /* Read the content of the MMD's selected register */ | |
152 | value = bus->read(bus, 0, MII_MMD_DATA); | |
153 | ||
154 | return value; | |
155 | err: | |
156 | dev_err(&bus->dev, "failed to read mmd register\n"); | |
157 | ||
158 | return ret; | |
159 | } | |
160 | ||
161 | static int | |
162 | core_write_mmd_indirect(struct mt7530_priv *priv, int prtad, | |
163 | int devad, u32 data) | |
164 | { | |
165 | struct mii_bus *bus = priv->bus; | |
166 | int ret; | |
167 | ||
168 | /* Write the desired MMD Devad */ | |
169 | ret = bus->write(bus, 0, MII_MMD_CTRL, devad); | |
170 | if (ret < 0) | |
171 | goto err; | |
172 | ||
173 | /* Write the desired MMD register address */ | |
174 | ret = bus->write(bus, 0, MII_MMD_DATA, prtad); | |
175 | if (ret < 0) | |
176 | goto err; | |
177 | ||
178 | /* Select the Function : DATA with no post increment */ | |
179 | ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
180 | if (ret < 0) | |
181 | goto err; | |
182 | ||
183 | /* Write the data into MMD's selected register */ | |
184 | ret = bus->write(bus, 0, MII_MMD_DATA, data); | |
185 | err: | |
186 | if (ret < 0) | |
187 | dev_err(&bus->dev, | |
188 | "failed to write mmd register\n"); | |
189 | return ret; | |
190 | } | |
191 | ||
192 | static void | |
193 | core_write(struct mt7530_priv *priv, u32 reg, u32 val) | |
194 | { | |
195 | struct mii_bus *bus = priv->bus; | |
196 | ||
197 | mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); | |
198 | ||
199 | core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val); | |
200 | ||
201 | mutex_unlock(&bus->mdio_lock); | |
202 | } | |
203 | ||
204 | static void | |
205 | core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set) | |
206 | { | |
207 | struct mii_bus *bus = priv->bus; | |
208 | u32 val; | |
209 | ||
210 | mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); | |
211 | ||
212 | val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2); | |
213 | val &= ~mask; | |
214 | val |= set; | |
215 | core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val); | |
216 | ||
217 | mutex_unlock(&bus->mdio_lock); | |
218 | } | |
219 | ||
220 | static void | |
221 | core_set(struct mt7530_priv *priv, u32 reg, u32 val) | |
222 | { | |
223 | core_rmw(priv, reg, 0, val); | |
224 | } | |
225 | ||
226 | static void | |
227 | core_clear(struct mt7530_priv *priv, u32 reg, u32 val) | |
228 | { | |
229 | core_rmw(priv, reg, val, 0); | |
230 | } | |
231 | ||
232 | static int | |
233 | mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val) | |
234 | { | |
235 | struct mii_bus *bus = priv->bus; | |
236 | u16 page, r, lo, hi; | |
237 | int ret; | |
238 | ||
239 | page = (reg >> 6) & 0x3ff; | |
240 | r = (reg >> 2) & 0xf; | |
241 | lo = val & 0xffff; | |
242 | hi = val >> 16; | |
243 | ||
244 | /* MT7530 uses 31 as the pseudo port */ | |
245 | ret = bus->write(bus, 0x1f, 0x1f, page); | |
246 | if (ret < 0) | |
247 | goto err; | |
248 | ||
249 | ret = bus->write(bus, 0x1f, r, lo); | |
250 | if (ret < 0) | |
251 | goto err; | |
252 | ||
253 | ret = bus->write(bus, 0x1f, 0x10, hi); | |
254 | err: | |
255 | if (ret < 0) | |
256 | dev_err(&bus->dev, | |
257 | "failed to write mt7530 register\n"); | |
258 | return ret; | |
259 | } | |
260 | ||
261 | static u32 | |
262 | mt7530_mii_read(struct mt7530_priv *priv, u32 reg) | |
263 | { | |
264 | struct mii_bus *bus = priv->bus; | |
265 | u16 page, r, lo, hi; | |
266 | int ret; | |
267 | ||
268 | page = (reg >> 6) & 0x3ff; | |
269 | r = (reg >> 2) & 0xf; | |
270 | ||
271 | /* MT7530 uses 31 as the pseudo port */ | |
272 | ret = bus->write(bus, 0x1f, 0x1f, page); | |
273 | if (ret < 0) { | |
274 | dev_err(&bus->dev, | |
275 | "failed to read mt7530 register\n"); | |
276 | return ret; | |
277 | } | |
278 | ||
279 | lo = bus->read(bus, 0x1f, r); | |
280 | hi = bus->read(bus, 0x1f, 0x10); | |
281 | ||
282 | return (hi << 16) | (lo & 0xffff); | |
283 | } | |
284 | ||
285 | static void | |
286 | mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val) | |
287 | { | |
288 | struct mii_bus *bus = priv->bus; | |
289 | ||
290 | mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); | |
291 | ||
292 | mt7530_mii_write(priv, reg, val); | |
293 | ||
294 | mutex_unlock(&bus->mdio_lock); | |
295 | } | |
296 | ||
297 | static u32 | |
298 | _mt7530_read(struct mt7530_dummy_poll *p) | |
299 | { | |
300 | struct mii_bus *bus = p->priv->bus; | |
301 | u32 val; | |
302 | ||
303 | mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); | |
304 | ||
305 | val = mt7530_mii_read(p->priv, p->reg); | |
306 | ||
307 | mutex_unlock(&bus->mdio_lock); | |
308 | ||
309 | return val; | |
310 | } | |
311 | ||
312 | static u32 | |
313 | mt7530_read(struct mt7530_priv *priv, u32 reg) | |
314 | { | |
315 | struct mt7530_dummy_poll p; | |
316 | ||
317 | INIT_MT7530_DUMMY_POLL(&p, priv, reg); | |
318 | return _mt7530_read(&p); | |
319 | } | |
320 | ||
321 | static void | |
322 | mt7530_rmw(struct mt7530_priv *priv, u32 reg, | |
323 | u32 mask, u32 set) | |
324 | { | |
325 | struct mii_bus *bus = priv->bus; | |
326 | u32 val; | |
327 | ||
328 | mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); | |
329 | ||
330 | val = mt7530_mii_read(priv, reg); | |
331 | val &= ~mask; | |
332 | val |= set; | |
333 | mt7530_mii_write(priv, reg, val); | |
334 | ||
335 | mutex_unlock(&bus->mdio_lock); | |
336 | } | |
337 | ||
338 | static void | |
339 | mt7530_set(struct mt7530_priv *priv, u32 reg, u32 val) | |
340 | { | |
341 | mt7530_rmw(priv, reg, 0, val); | |
342 | } | |
343 | ||
344 | static void | |
345 | mt7530_clear(struct mt7530_priv *priv, u32 reg, u32 val) | |
346 | { | |
347 | mt7530_rmw(priv, reg, val, 0); | |
348 | } | |
349 | ||
350 | static int | |
351 | mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp) | |
352 | { | |
353 | u32 val; | |
354 | int ret; | |
355 | struct mt7530_dummy_poll p; | |
356 | ||
357 | /* Set the command operating upon the MAC address entries */ | |
358 | val = ATC_BUSY | ATC_MAT(0) | cmd; | |
359 | mt7530_write(priv, MT7530_ATC, val); | |
360 | ||
361 | INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_ATC); | |
362 | ret = readx_poll_timeout(_mt7530_read, &p, val, | |
363 | !(val & ATC_BUSY), 20, 20000); | |
364 | if (ret < 0) { | |
365 | dev_err(priv->dev, "reset timeout\n"); | |
366 | return ret; | |
367 | } | |
368 | ||
369 | /* Additional sanity for read command if the specified | |
370 | * entry is invalid | |
371 | */ | |
372 | val = mt7530_read(priv, MT7530_ATC); | |
373 | if ((cmd == MT7530_FDB_READ) && (val & ATC_INVALID)) | |
374 | return -EINVAL; | |
375 | ||
376 | if (rsp) | |
377 | *rsp = val; | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
382 | static void | |
383 | mt7530_fdb_read(struct mt7530_priv *priv, struct mt7530_fdb *fdb) | |
384 | { | |
385 | u32 reg[3]; | |
386 | int i; | |
387 | ||
388 | /* Read from ARL table into an array */ | |
389 | for (i = 0; i < 3; i++) { | |
390 | reg[i] = mt7530_read(priv, MT7530_TSRA1 + (i * 4)); | |
391 | ||
392 | dev_dbg(priv->dev, "%s(%d) reg[%d]=0x%x\n", | |
393 | __func__, __LINE__, i, reg[i]); | |
394 | } | |
395 | ||
396 | fdb->vid = (reg[1] >> CVID) & CVID_MASK; | |
397 | fdb->aging = (reg[2] >> AGE_TIMER) & AGE_TIMER_MASK; | |
398 | fdb->port_mask = (reg[2] >> PORT_MAP) & PORT_MAP_MASK; | |
399 | fdb->mac[0] = (reg[0] >> MAC_BYTE_0) & MAC_BYTE_MASK; | |
400 | fdb->mac[1] = (reg[0] >> MAC_BYTE_1) & MAC_BYTE_MASK; | |
401 | fdb->mac[2] = (reg[0] >> MAC_BYTE_2) & MAC_BYTE_MASK; | |
402 | fdb->mac[3] = (reg[0] >> MAC_BYTE_3) & MAC_BYTE_MASK; | |
403 | fdb->mac[4] = (reg[1] >> MAC_BYTE_4) & MAC_BYTE_MASK; | |
404 | fdb->mac[5] = (reg[1] >> MAC_BYTE_5) & MAC_BYTE_MASK; | |
405 | fdb->noarp = ((reg[2] >> ENT_STATUS) & ENT_STATUS_MASK) == STATIC_ENT; | |
406 | } | |
407 | ||
408 | static void | |
409 | mt7530_fdb_write(struct mt7530_priv *priv, u16 vid, | |
410 | u8 port_mask, const u8 *mac, | |
411 | u8 aging, u8 type) | |
412 | { | |
413 | u32 reg[3] = { 0 }; | |
414 | int i; | |
415 | ||
416 | reg[1] |= vid & CVID_MASK; | |
417 | reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER; | |
418 | reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP; | |
419 | /* STATIC_ENT indicate that entry is static wouldn't | |
420 | * be aged out and STATIC_EMP specified as erasing an | |
421 | * entry | |
422 | */ | |
423 | reg[2] |= (type & ENT_STATUS_MASK) << ENT_STATUS; | |
424 | reg[1] |= mac[5] << MAC_BYTE_5; | |
425 | reg[1] |= mac[4] << MAC_BYTE_4; | |
426 | reg[0] |= mac[3] << MAC_BYTE_3; | |
427 | reg[0] |= mac[2] << MAC_BYTE_2; | |
428 | reg[0] |= mac[1] << MAC_BYTE_1; | |
429 | reg[0] |= mac[0] << MAC_BYTE_0; | |
430 | ||
431 | /* Write array into the ARL table */ | |
432 | for (i = 0; i < 3; i++) | |
433 | mt7530_write(priv, MT7530_ATA1 + (i * 4), reg[i]); | |
434 | } | |
435 | ||
436 | static int | |
437 | mt7530_pad_clk_setup(struct dsa_switch *ds, int mode) | |
438 | { | |
439 | struct mt7530_priv *priv = ds->priv; | |
440 | u32 ncpo1, ssc_delta, trgint, i; | |
441 | ||
442 | switch (mode) { | |
443 | case PHY_INTERFACE_MODE_RGMII: | |
444 | trgint = 0; | |
445 | ncpo1 = 0x0c80; | |
446 | ssc_delta = 0x87; | |
447 | break; | |
448 | case PHY_INTERFACE_MODE_TRGMII: | |
449 | trgint = 1; | |
450 | ncpo1 = 0x1400; | |
451 | ssc_delta = 0x57; | |
452 | break; | |
453 | default: | |
454 | dev_err(priv->dev, "xMII mode %d not supported\n", mode); | |
455 | return -EINVAL; | |
456 | } | |
457 | ||
458 | mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK, | |
459 | P6_INTF_MODE(trgint)); | |
460 | ||
461 | /* Lower Tx Driving for TRGMII path */ | |
462 | for (i = 0 ; i < NUM_TRGMII_CTRL ; i++) | |
463 | mt7530_write(priv, MT7530_TRGMII_TD_ODT(i), | |
464 | TD_DM_DRVP(8) | TD_DM_DRVN(8)); | |
465 | ||
466 | /* Setup core clock for MT7530 */ | |
467 | if (!trgint) { | |
468 | /* Disable MT7530 core clock */ | |
469 | core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); | |
470 | ||
471 | /* Disable PLL, since phy_device has not yet been created | |
472 | * provided for phy_[read,write]_mmd_indirect is called, we | |
473 | * provide our own core_write_mmd_indirect to complete this | |
474 | * function. | |
475 | */ | |
476 | core_write_mmd_indirect(priv, | |
477 | CORE_GSWPLL_GRP1, | |
478 | MDIO_MMD_VEND2, | |
479 | 0); | |
480 | ||
481 | /* Set core clock into 500Mhz */ | |
482 | core_write(priv, CORE_GSWPLL_GRP2, | |
483 | RG_GSWPLL_POSDIV_500M(1) | | |
484 | RG_GSWPLL_FBKDIV_500M(25)); | |
485 | ||
486 | /* Enable PLL */ | |
487 | core_write(priv, CORE_GSWPLL_GRP1, | |
488 | RG_GSWPLL_EN_PRE | | |
489 | RG_GSWPLL_POSDIV_200M(2) | | |
490 | RG_GSWPLL_FBKDIV_200M(32)); | |
491 | ||
492 | /* Enable MT7530 core clock */ | |
493 | core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); | |
494 | } | |
495 | ||
496 | /* Setup the MT7530 TRGMII Tx Clock */ | |
497 | core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); | |
498 | core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1)); | |
499 | core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0)); | |
500 | core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta)); | |
501 | core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta)); | |
502 | core_write(priv, CORE_PLL_GROUP4, | |
503 | RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN | | |
504 | RG_SYSPLL_BIAS_LPF_EN); | |
505 | core_write(priv, CORE_PLL_GROUP2, | |
506 | RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN | | |
507 | RG_SYSPLL_POSDIV(1)); | |
508 | core_write(priv, CORE_PLL_GROUP7, | |
509 | RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) | | |
510 | RG_LCDDS_PWDB | RG_LCDDS_ISO_EN); | |
511 | core_set(priv, CORE_TRGMII_GSW_CLK_CG, | |
512 | REG_GSWCK_EN | REG_TRGMIICK_EN); | |
513 | ||
514 | if (!trgint) | |
515 | for (i = 0 ; i < NUM_TRGMII_CTRL; i++) | |
516 | mt7530_rmw(priv, MT7530_TRGMII_RD(i), | |
517 | RD_TAP_MASK, RD_TAP(16)); | |
518 | else | |
519 | mt7623_trgmii_set(priv, GSW_INTF_MODE, INTF_MODE_TRGMII); | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
524 | static int | |
525 | mt7623_pad_clk_setup(struct dsa_switch *ds) | |
526 | { | |
527 | struct mt7530_priv *priv = ds->priv; | |
528 | int i; | |
529 | ||
530 | for (i = 0 ; i < NUM_TRGMII_CTRL; i++) | |
531 | mt7623_trgmii_write(priv, GSW_TRGMII_TD_ODT(i), | |
532 | TD_DM_DRVP(8) | TD_DM_DRVN(8)); | |
533 | ||
534 | mt7623_trgmii_set(priv, GSW_TRGMII_RCK_CTRL, RX_RST | RXC_DQSISEL); | |
535 | mt7623_trgmii_clear(priv, GSW_TRGMII_RCK_CTRL, RX_RST); | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | static void | |
541 | mt7530_mib_reset(struct dsa_switch *ds) | |
542 | { | |
543 | struct mt7530_priv *priv = ds->priv; | |
544 | ||
545 | mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_FLUSH); | |
546 | mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE); | |
547 | } | |
548 | ||
549 | static void | |
550 | mt7530_port_set_status(struct mt7530_priv *priv, int port, int enable) | |
551 | { | |
552 | u32 mask = PMCR_TX_EN | PMCR_RX_EN; | |
553 | ||
554 | if (enable) | |
555 | mt7530_set(priv, MT7530_PMCR_P(port), mask); | |
556 | else | |
557 | mt7530_clear(priv, MT7530_PMCR_P(port), mask); | |
558 | } | |
559 | ||
560 | static int mt7530_phy_read(struct dsa_switch *ds, int port, int regnum) | |
561 | { | |
562 | struct mt7530_priv *priv = ds->priv; | |
563 | ||
564 | return mdiobus_read_nested(priv->bus, port, regnum); | |
565 | } | |
566 | ||
360cc342 CIK |
567 | static int mt7530_phy_write(struct dsa_switch *ds, int port, int regnum, |
568 | u16 val) | |
b8f126a8 SW |
569 | { |
570 | struct mt7530_priv *priv = ds->priv; | |
571 | ||
572 | return mdiobus_write_nested(priv->bus, port, regnum, val); | |
573 | } | |
574 | ||
575 | static void | |
576 | mt7530_get_strings(struct dsa_switch *ds, int port, uint8_t *data) | |
577 | { | |
578 | int i; | |
579 | ||
580 | for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) | |
581 | strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name, | |
582 | ETH_GSTRING_LEN); | |
583 | } | |
584 | ||
585 | static void | |
586 | mt7530_get_ethtool_stats(struct dsa_switch *ds, int port, | |
587 | uint64_t *data) | |
588 | { | |
589 | struct mt7530_priv *priv = ds->priv; | |
590 | const struct mt7530_mib_desc *mib; | |
591 | u32 reg, i; | |
592 | u64 hi; | |
593 | ||
594 | for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) { | |
595 | mib = &mt7530_mib[i]; | |
596 | reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset; | |
597 | ||
598 | data[i] = mt7530_read(priv, reg); | |
599 | if (mib->size == 2) { | |
600 | hi = mt7530_read(priv, reg + 4); | |
601 | data[i] |= hi << 32; | |
602 | } | |
603 | } | |
604 | } | |
605 | ||
606 | static int | |
88c06054 | 607 | mt7530_get_sset_count(struct dsa_switch *ds, int port) |
b8f126a8 SW |
608 | { |
609 | return ARRAY_SIZE(mt7530_mib); | |
610 | } | |
611 | ||
612 | static void mt7530_adjust_link(struct dsa_switch *ds, int port, | |
613 | struct phy_device *phydev) | |
614 | { | |
615 | struct mt7530_priv *priv = ds->priv; | |
616 | ||
617 | if (phy_is_pseudo_fixed_link(phydev)) { | |
618 | dev_dbg(priv->dev, "phy-mode for master device = %x\n", | |
619 | phydev->interface); | |
620 | ||
621 | /* Setup TX circuit incluing relevant PAD and driving */ | |
622 | mt7530_pad_clk_setup(ds, phydev->interface); | |
623 | ||
624 | /* Setup RX circuit, relevant PAD and driving on the host | |
625 | * which must be placed after the setup on the device side is | |
626 | * all finished. | |
627 | */ | |
628 | mt7623_pad_clk_setup(ds); | |
8e6f1521 JC |
629 | } else { |
630 | u16 lcl_adv = 0, rmt_adv = 0; | |
631 | u8 flowctrl; | |
632 | u32 mcr = PMCR_USERP_LINK | PMCR_FORCE_MODE; | |
633 | ||
634 | switch (phydev->speed) { | |
635 | case SPEED_1000: | |
636 | mcr |= PMCR_FORCE_SPEED_1000; | |
637 | break; | |
638 | case SPEED_100: | |
639 | mcr |= PMCR_FORCE_SPEED_100; | |
640 | break; | |
641 | }; | |
642 | ||
643 | if (phydev->link) | |
644 | mcr |= PMCR_FORCE_LNK; | |
645 | ||
646 | if (phydev->duplex) { | |
647 | mcr |= PMCR_FORCE_FDX; | |
648 | ||
649 | if (phydev->pause) | |
650 | rmt_adv = LPA_PAUSE_CAP; | |
651 | if (phydev->asym_pause) | |
652 | rmt_adv |= LPA_PAUSE_ASYM; | |
653 | ||
654 | if (phydev->advertising & ADVERTISED_Pause) | |
655 | lcl_adv |= ADVERTISE_PAUSE_CAP; | |
656 | if (phydev->advertising & ADVERTISED_Asym_Pause) | |
657 | lcl_adv |= ADVERTISE_PAUSE_ASYM; | |
658 | ||
659 | flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); | |
660 | ||
661 | if (flowctrl & FLOW_CTRL_TX) | |
662 | mcr |= PMCR_TX_FC_EN; | |
663 | if (flowctrl & FLOW_CTRL_RX) | |
664 | mcr |= PMCR_RX_FC_EN; | |
665 | } | |
666 | mt7530_write(priv, MT7530_PMCR_P(port), mcr); | |
b8f126a8 SW |
667 | } |
668 | } | |
669 | ||
670 | static int | |
671 | mt7530_cpu_port_enable(struct mt7530_priv *priv, | |
672 | int port) | |
673 | { | |
674 | /* Enable Mediatek header mode on the cpu port */ | |
675 | mt7530_write(priv, MT7530_PVC_P(port), | |
676 | PORT_SPEC_TAG); | |
677 | ||
678 | /* Setup the MAC by default for the cpu port */ | |
679 | mt7530_write(priv, MT7530_PMCR_P(port), PMCR_CPUP_LINK); | |
680 | ||
681 | /* Disable auto learning on the cpu port */ | |
682 | mt7530_set(priv, MT7530_PSC_P(port), SA_DIS); | |
683 | ||
684 | /* Unknown unicast frame fordwarding to the cpu port */ | |
685 | mt7530_set(priv, MT7530_MFC, UNU_FFP(BIT(port))); | |
686 | ||
687 | /* CPU port gets connected to all user ports of | |
688 | * the switch | |
689 | */ | |
690 | mt7530_write(priv, MT7530_PCR_P(port), | |
02bc6e54 | 691 | PCR_MATRIX(dsa_user_ports(priv->ds))); |
b8f126a8 SW |
692 | |
693 | return 0; | |
694 | } | |
695 | ||
696 | static int | |
697 | mt7530_port_enable(struct dsa_switch *ds, int port, | |
698 | struct phy_device *phy) | |
699 | { | |
700 | struct mt7530_priv *priv = ds->priv; | |
701 | ||
702 | mutex_lock(&priv->reg_mutex); | |
703 | ||
704 | /* Setup the MAC for the user port */ | |
705 | mt7530_write(priv, MT7530_PMCR_P(port), PMCR_USERP_LINK); | |
706 | ||
707 | /* Allow the user port gets connected to the cpu port and also | |
708 | * restore the port matrix if the port is the member of a certain | |
709 | * bridge. | |
710 | */ | |
711 | priv->ports[port].pm |= PCR_MATRIX(BIT(MT7530_CPU_PORT)); | |
712 | priv->ports[port].enable = true; | |
713 | mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, | |
714 | priv->ports[port].pm); | |
715 | mt7530_port_set_status(priv, port, 1); | |
716 | ||
717 | mutex_unlock(&priv->reg_mutex); | |
718 | ||
719 | return 0; | |
720 | } | |
721 | ||
722 | static void | |
723 | mt7530_port_disable(struct dsa_switch *ds, int port, | |
724 | struct phy_device *phy) | |
725 | { | |
726 | struct mt7530_priv *priv = ds->priv; | |
727 | ||
728 | mutex_lock(&priv->reg_mutex); | |
729 | ||
730 | /* Clear up all port matrix which could be restored in the next | |
731 | * enablement for the port. | |
732 | */ | |
733 | priv->ports[port].enable = false; | |
734 | mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, | |
735 | PCR_MATRIX_CLR); | |
736 | mt7530_port_set_status(priv, port, 0); | |
737 | ||
738 | mutex_unlock(&priv->reg_mutex); | |
739 | } | |
740 | ||
741 | static void | |
742 | mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state) | |
743 | { | |
744 | struct mt7530_priv *priv = ds->priv; | |
745 | u32 stp_state; | |
746 | ||
747 | switch (state) { | |
748 | case BR_STATE_DISABLED: | |
749 | stp_state = MT7530_STP_DISABLED; | |
750 | break; | |
751 | case BR_STATE_BLOCKING: | |
752 | stp_state = MT7530_STP_BLOCKING; | |
753 | break; | |
754 | case BR_STATE_LISTENING: | |
755 | stp_state = MT7530_STP_LISTENING; | |
756 | break; | |
757 | case BR_STATE_LEARNING: | |
758 | stp_state = MT7530_STP_LEARNING; | |
759 | break; | |
760 | case BR_STATE_FORWARDING: | |
761 | default: | |
762 | stp_state = MT7530_STP_FORWARDING; | |
763 | break; | |
764 | } | |
765 | ||
766 | mt7530_rmw(priv, MT7530_SSP_P(port), FID_PST_MASK, stp_state); | |
767 | } | |
768 | ||
769 | static int | |
770 | mt7530_port_bridge_join(struct dsa_switch *ds, int port, | |
771 | struct net_device *bridge) | |
772 | { | |
773 | struct mt7530_priv *priv = ds->priv; | |
774 | u32 port_bitmap = BIT(MT7530_CPU_PORT); | |
775 | int i; | |
776 | ||
777 | mutex_lock(&priv->reg_mutex); | |
778 | ||
779 | for (i = 0; i < MT7530_NUM_PORTS; i++) { | |
780 | /* Add this port to the port matrix of the other ports in the | |
781 | * same bridge. If the port is disabled, port matrix is kept | |
782 | * and not being setup until the port becomes enabled. | |
783 | */ | |
4a5b85ff | 784 | if (dsa_is_user_port(ds, i) && i != port) { |
c8652c83 | 785 | if (dsa_to_port(ds, i)->bridge_dev != bridge) |
b8f126a8 SW |
786 | continue; |
787 | if (priv->ports[i].enable) | |
788 | mt7530_set(priv, MT7530_PCR_P(i), | |
789 | PCR_MATRIX(BIT(port))); | |
790 | priv->ports[i].pm |= PCR_MATRIX(BIT(port)); | |
791 | ||
792 | port_bitmap |= BIT(i); | |
793 | } | |
794 | } | |
795 | ||
796 | /* Add the all other ports to this port matrix. */ | |
797 | if (priv->ports[port].enable) | |
798 | mt7530_rmw(priv, MT7530_PCR_P(port), | |
799 | PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap)); | |
800 | priv->ports[port].pm |= PCR_MATRIX(port_bitmap); | |
801 | ||
802 | mutex_unlock(&priv->reg_mutex); | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
83163f7d SW |
807 | static void |
808 | mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port) | |
809 | { | |
810 | struct mt7530_priv *priv = ds->priv; | |
811 | bool all_user_ports_removed = true; | |
812 | int i; | |
813 | ||
814 | /* When a port is removed from the bridge, the port would be set up | |
815 | * back to the default as is at initial boot which is a VLAN-unaware | |
816 | * port. | |
817 | */ | |
818 | mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, | |
819 | MT7530_PORT_MATRIX_MODE); | |
820 | mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK, | |
821 | VLAN_ATTR(MT7530_VLAN_TRANSPARENT)); | |
822 | ||
823 | priv->ports[port].vlan_filtering = false; | |
824 | ||
825 | for (i = 0; i < MT7530_NUM_PORTS; i++) { | |
826 | if (dsa_is_user_port(ds, i) && | |
827 | priv->ports[i].vlan_filtering) { | |
828 | all_user_ports_removed = false; | |
829 | break; | |
830 | } | |
831 | } | |
832 | ||
833 | /* CPU port also does the same thing until all user ports belonging to | |
834 | * the CPU port get out of VLAN filtering mode. | |
835 | */ | |
836 | if (all_user_ports_removed) { | |
837 | mt7530_write(priv, MT7530_PCR_P(MT7530_CPU_PORT), | |
838 | PCR_MATRIX(dsa_user_ports(priv->ds))); | |
839 | mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT), | |
840 | PORT_SPEC_TAG); | |
841 | } | |
842 | } | |
843 | ||
844 | static void | |
845 | mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port) | |
846 | { | |
847 | struct mt7530_priv *priv = ds->priv; | |
848 | ||
849 | /* The real fabric path would be decided on the membership in the | |
850 | * entry of VLAN table. PCR_MATRIX set up here with ALL_MEMBERS | |
851 | * means potential VLAN can be consisting of certain subset of all | |
852 | * ports. | |
853 | */ | |
854 | mt7530_rmw(priv, MT7530_PCR_P(port), | |
855 | PCR_MATRIX_MASK, PCR_MATRIX(MT7530_ALL_MEMBERS)); | |
856 | ||
857 | /* Trapped into security mode allows packet forwarding through VLAN | |
858 | * table lookup. | |
859 | */ | |
860 | mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, | |
861 | MT7530_PORT_SECURITY_MODE); | |
862 | ||
863 | /* Set the port as a user port which is to be able to recognize VID | |
864 | * from incoming packets before fetching entry within the VLAN table. | |
865 | */ | |
866 | mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK, | |
867 | VLAN_ATTR(MT7530_VLAN_USER)); | |
868 | } | |
869 | ||
b8f126a8 SW |
870 | static void |
871 | mt7530_port_bridge_leave(struct dsa_switch *ds, int port, | |
872 | struct net_device *bridge) | |
873 | { | |
874 | struct mt7530_priv *priv = ds->priv; | |
875 | int i; | |
876 | ||
877 | mutex_lock(&priv->reg_mutex); | |
878 | ||
879 | for (i = 0; i < MT7530_NUM_PORTS; i++) { | |
880 | /* Remove this port from the port matrix of the other ports | |
881 | * in the same bridge. If the port is disabled, port matrix | |
882 | * is kept and not being setup until the port becomes enabled. | |
83163f7d SW |
883 | * And the other port's port matrix cannot be broken when the |
884 | * other port is still a VLAN-aware port. | |
b8f126a8 | 885 | */ |
83163f7d SW |
886 | if (!priv->ports[i].vlan_filtering && |
887 | dsa_is_user_port(ds, i) && i != port) { | |
c8652c83 | 888 | if (dsa_to_port(ds, i)->bridge_dev != bridge) |
b8f126a8 SW |
889 | continue; |
890 | if (priv->ports[i].enable) | |
891 | mt7530_clear(priv, MT7530_PCR_P(i), | |
892 | PCR_MATRIX(BIT(port))); | |
893 | priv->ports[i].pm &= ~PCR_MATRIX(BIT(port)); | |
894 | } | |
895 | } | |
896 | ||
897 | /* Set the cpu port to be the only one in the port matrix of | |
898 | * this port. | |
899 | */ | |
900 | if (priv->ports[port].enable) | |
901 | mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, | |
902 | PCR_MATRIX(BIT(MT7530_CPU_PORT))); | |
903 | priv->ports[port].pm = PCR_MATRIX(BIT(MT7530_CPU_PORT)); | |
904 | ||
83163f7d SW |
905 | mt7530_port_set_vlan_unaware(ds, port); |
906 | ||
b8f126a8 SW |
907 | mutex_unlock(&priv->reg_mutex); |
908 | } | |
909 | ||
910 | static int | |
b8f126a8 | 911 | mt7530_port_fdb_add(struct dsa_switch *ds, int port, |
6c2c1dcb | 912 | const unsigned char *addr, u16 vid) |
b8f126a8 SW |
913 | { |
914 | struct mt7530_priv *priv = ds->priv; | |
1b6dd556 | 915 | int ret; |
b8f126a8 SW |
916 | u8 port_mask = BIT(port); |
917 | ||
918 | mutex_lock(&priv->reg_mutex); | |
6c2c1dcb | 919 | mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT); |
18bd5949 | 920 | ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL); |
b8f126a8 | 921 | mutex_unlock(&priv->reg_mutex); |
1b6dd556 AS |
922 | |
923 | return ret; | |
b8f126a8 SW |
924 | } |
925 | ||
926 | static int | |
927 | mt7530_port_fdb_del(struct dsa_switch *ds, int port, | |
6c2c1dcb | 928 | const unsigned char *addr, u16 vid) |
b8f126a8 SW |
929 | { |
930 | struct mt7530_priv *priv = ds->priv; | |
931 | int ret; | |
932 | u8 port_mask = BIT(port); | |
933 | ||
934 | mutex_lock(&priv->reg_mutex); | |
6c2c1dcb | 935 | mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_EMP); |
18bd5949 | 936 | ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL); |
b8f126a8 SW |
937 | mutex_unlock(&priv->reg_mutex); |
938 | ||
939 | return ret; | |
940 | } | |
941 | ||
942 | static int | |
943 | mt7530_port_fdb_dump(struct dsa_switch *ds, int port, | |
2bedde1a | 944 | dsa_fdb_dump_cb_t *cb, void *data) |
b8f126a8 SW |
945 | { |
946 | struct mt7530_priv *priv = ds->priv; | |
947 | struct mt7530_fdb _fdb = { 0 }; | |
948 | int cnt = MT7530_NUM_FDB_RECORDS; | |
949 | int ret = 0; | |
950 | u32 rsp = 0; | |
951 | ||
952 | mutex_lock(&priv->reg_mutex); | |
953 | ||
954 | ret = mt7530_fdb_cmd(priv, MT7530_FDB_START, &rsp); | |
955 | if (ret < 0) | |
956 | goto err; | |
957 | ||
958 | do { | |
959 | if (rsp & ATC_SRCH_HIT) { | |
960 | mt7530_fdb_read(priv, &_fdb); | |
961 | if (_fdb.port_mask & BIT(port)) { | |
2bedde1a AS |
962 | ret = cb(_fdb.mac, _fdb.vid, _fdb.noarp, |
963 | data); | |
b8f126a8 SW |
964 | if (ret < 0) |
965 | break; | |
966 | } | |
967 | } | |
968 | } while (--cnt && | |
969 | !(rsp & ATC_SRCH_END) && | |
970 | !mt7530_fdb_cmd(priv, MT7530_FDB_NEXT, &rsp)); | |
971 | err: | |
972 | mutex_unlock(&priv->reg_mutex); | |
973 | ||
974 | return 0; | |
975 | } | |
976 | ||
83163f7d SW |
977 | static int |
978 | mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid) | |
979 | { | |
980 | struct mt7530_dummy_poll p; | |
981 | u32 val; | |
982 | int ret; | |
983 | ||
984 | val = VTCR_BUSY | VTCR_FUNC(cmd) | vid; | |
985 | mt7530_write(priv, MT7530_VTCR, val); | |
986 | ||
987 | INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_VTCR); | |
988 | ret = readx_poll_timeout(_mt7530_read, &p, val, | |
989 | !(val & VTCR_BUSY), 20, 20000); | |
990 | if (ret < 0) { | |
991 | dev_err(priv->dev, "poll timeout\n"); | |
992 | return ret; | |
993 | } | |
994 | ||
995 | val = mt7530_read(priv, MT7530_VTCR); | |
996 | if (val & VTCR_INVALID) { | |
997 | dev_err(priv->dev, "read VTCR invalid\n"); | |
998 | return -EINVAL; | |
999 | } | |
1000 | ||
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | static int | |
1005 | mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, | |
1006 | bool vlan_filtering) | |
1007 | { | |
1008 | struct mt7530_priv *priv = ds->priv; | |
1009 | ||
1010 | priv->ports[port].vlan_filtering = vlan_filtering; | |
1011 | ||
1012 | if (vlan_filtering) { | |
1013 | /* The port is being kept as VLAN-unaware port when bridge is | |
1014 | * set up with vlan_filtering not being set, Otherwise, the | |
1015 | * port and the corresponding CPU port is required the setup | |
1016 | * for becoming a VLAN-aware port. | |
1017 | */ | |
1018 | mt7530_port_set_vlan_aware(ds, port); | |
1019 | mt7530_port_set_vlan_aware(ds, MT7530_CPU_PORT); | |
1020 | } | |
1021 | ||
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | static int | |
1026 | mt7530_port_vlan_prepare(struct dsa_switch *ds, int port, | |
1027 | const struct switchdev_obj_port_vlan *vlan) | |
1028 | { | |
1029 | /* nothing needed */ | |
1030 | ||
1031 | return 0; | |
1032 | } | |
1033 | ||
1034 | static void | |
1035 | mt7530_hw_vlan_add(struct mt7530_priv *priv, | |
1036 | struct mt7530_hw_vlan_entry *entry) | |
1037 | { | |
1038 | u8 new_members; | |
1039 | u32 val; | |
1040 | ||
1041 | new_members = entry->old_members | BIT(entry->port) | | |
1042 | BIT(MT7530_CPU_PORT); | |
1043 | ||
1044 | /* Validate the entry with independent learning, create egress tag per | |
1045 | * VLAN and joining the port as one of the port members. | |
1046 | */ | |
1047 | val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | VLAN_VALID; | |
1048 | mt7530_write(priv, MT7530_VAWD1, val); | |
1049 | ||
1050 | /* Decide whether adding tag or not for those outgoing packets from the | |
1051 | * port inside the VLAN. | |
1052 | */ | |
1053 | val = entry->untagged ? MT7530_VLAN_EGRESS_UNTAG : | |
1054 | MT7530_VLAN_EGRESS_TAG; | |
1055 | mt7530_rmw(priv, MT7530_VAWD2, | |
1056 | ETAG_CTRL_P_MASK(entry->port), | |
1057 | ETAG_CTRL_P(entry->port, val)); | |
1058 | ||
1059 | /* CPU port is always taken as a tagged port for serving more than one | |
1060 | * VLANs across and also being applied with egress type stack mode for | |
1061 | * that VLAN tags would be appended after hardware special tag used as | |
1062 | * DSA tag. | |
1063 | */ | |
1064 | mt7530_rmw(priv, MT7530_VAWD2, | |
1065 | ETAG_CTRL_P_MASK(MT7530_CPU_PORT), | |
1066 | ETAG_CTRL_P(MT7530_CPU_PORT, | |
1067 | MT7530_VLAN_EGRESS_STACK)); | |
1068 | } | |
1069 | ||
1070 | static void | |
1071 | mt7530_hw_vlan_del(struct mt7530_priv *priv, | |
1072 | struct mt7530_hw_vlan_entry *entry) | |
1073 | { | |
1074 | u8 new_members; | |
1075 | u32 val; | |
1076 | ||
1077 | new_members = entry->old_members & ~BIT(entry->port); | |
1078 | ||
1079 | val = mt7530_read(priv, MT7530_VAWD1); | |
1080 | if (!(val & VLAN_VALID)) { | |
1081 | dev_err(priv->dev, | |
1082 | "Cannot be deleted due to invalid entry\n"); | |
1083 | return; | |
1084 | } | |
1085 | ||
1086 | /* If certain member apart from CPU port is still alive in the VLAN, | |
1087 | * the entry would be kept valid. Otherwise, the entry is got to be | |
1088 | * disabled. | |
1089 | */ | |
1090 | if (new_members && new_members != BIT(MT7530_CPU_PORT)) { | |
1091 | val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | | |
1092 | VLAN_VALID; | |
1093 | mt7530_write(priv, MT7530_VAWD1, val); | |
1094 | } else { | |
1095 | mt7530_write(priv, MT7530_VAWD1, 0); | |
1096 | mt7530_write(priv, MT7530_VAWD2, 0); | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | static void | |
1101 | mt7530_hw_vlan_update(struct mt7530_priv *priv, u16 vid, | |
1102 | struct mt7530_hw_vlan_entry *entry, | |
1103 | mt7530_vlan_op vlan_op) | |
1104 | { | |
1105 | u32 val; | |
1106 | ||
1107 | /* Fetch entry */ | |
1108 | mt7530_vlan_cmd(priv, MT7530_VTCR_RD_VID, vid); | |
1109 | ||
1110 | val = mt7530_read(priv, MT7530_VAWD1); | |
1111 | ||
1112 | entry->old_members = (val >> PORT_MEM_SHFT) & PORT_MEM_MASK; | |
1113 | ||
1114 | /* Manipulate entry */ | |
1115 | vlan_op(priv, entry); | |
1116 | ||
1117 | /* Flush result to hardware */ | |
1118 | mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, vid); | |
1119 | } | |
1120 | ||
1121 | static void | |
1122 | mt7530_port_vlan_add(struct dsa_switch *ds, int port, | |
1123 | const struct switchdev_obj_port_vlan *vlan) | |
1124 | { | |
1125 | bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; | |
1126 | bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; | |
1127 | struct mt7530_hw_vlan_entry new_entry; | |
1128 | struct mt7530_priv *priv = ds->priv; | |
1129 | u16 vid; | |
1130 | ||
1131 | /* The port is kept as VLAN-unaware if bridge with vlan_filtering not | |
1132 | * being set. | |
1133 | */ | |
1134 | if (!priv->ports[port].vlan_filtering) | |
1135 | return; | |
1136 | ||
1137 | mutex_lock(&priv->reg_mutex); | |
1138 | ||
1139 | for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { | |
1140 | mt7530_hw_vlan_entry_init(&new_entry, port, untagged); | |
1141 | mt7530_hw_vlan_update(priv, vid, &new_entry, | |
1142 | mt7530_hw_vlan_add); | |
1143 | } | |
1144 | ||
1145 | if (pvid) { | |
1146 | mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK, | |
1147 | G0_PORT_VID(vlan->vid_end)); | |
1148 | priv->ports[port].pvid = vlan->vid_end; | |
1149 | } | |
1150 | ||
1151 | mutex_unlock(&priv->reg_mutex); | |
1152 | } | |
1153 | ||
1154 | static int | |
1155 | mt7530_port_vlan_del(struct dsa_switch *ds, int port, | |
1156 | const struct switchdev_obj_port_vlan *vlan) | |
1157 | { | |
1158 | struct mt7530_hw_vlan_entry target_entry; | |
1159 | struct mt7530_priv *priv = ds->priv; | |
1160 | u16 vid, pvid; | |
1161 | ||
1162 | /* The port is kept as VLAN-unaware if bridge with vlan_filtering not | |
1163 | * being set. | |
1164 | */ | |
1165 | if (!priv->ports[port].vlan_filtering) | |
1166 | return 0; | |
1167 | ||
1168 | mutex_lock(&priv->reg_mutex); | |
1169 | ||
1170 | pvid = priv->ports[port].pvid; | |
1171 | for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { | |
1172 | mt7530_hw_vlan_entry_init(&target_entry, port, 0); | |
1173 | mt7530_hw_vlan_update(priv, vid, &target_entry, | |
1174 | mt7530_hw_vlan_del); | |
1175 | ||
1176 | /* PVID is being restored to the default whenever the PVID port | |
1177 | * is being removed from the VLAN. | |
1178 | */ | |
1179 | if (pvid == vid) | |
1180 | pvid = G0_PORT_VID_DEF; | |
1181 | } | |
1182 | ||
1183 | mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK, pvid); | |
1184 | priv->ports[port].pvid = pvid; | |
1185 | ||
1186 | mutex_unlock(&priv->reg_mutex); | |
1187 | ||
1188 | return 0; | |
1189 | } | |
1190 | ||
b8f126a8 | 1191 | static enum dsa_tag_protocol |
5ed4e3eb | 1192 | mtk_get_tag_protocol(struct dsa_switch *ds, int port) |
b8f126a8 SW |
1193 | { |
1194 | struct mt7530_priv *priv = ds->priv; | |
1195 | ||
5ed4e3eb | 1196 | if (port != MT7530_CPU_PORT) { |
b8f126a8 SW |
1197 | dev_warn(priv->dev, |
1198 | "port not matched with tagging CPU port\n"); | |
1199 | return DSA_TAG_PROTO_NONE; | |
1200 | } else { | |
1201 | return DSA_TAG_PROTO_MTK; | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | static int | |
1206 | mt7530_setup(struct dsa_switch *ds) | |
1207 | { | |
1208 | struct mt7530_priv *priv = ds->priv; | |
1209 | int ret, i; | |
1210 | u32 id, val; | |
1211 | struct device_node *dn; | |
1212 | struct mt7530_dummy_poll p; | |
1213 | ||
0abfd494 | 1214 | /* The parent node of master netdev which holds the common system |
b8f126a8 SW |
1215 | * controller also is the container for two GMACs nodes representing |
1216 | * as two netdev instances. | |
1217 | */ | |
f8b8b1cd | 1218 | dn = ds->ports[MT7530_CPU_PORT].master->dev.of_node->parent; |
b8f126a8 SW |
1219 | priv->ethernet = syscon_node_to_regmap(dn); |
1220 | if (IS_ERR(priv->ethernet)) | |
1221 | return PTR_ERR(priv->ethernet); | |
1222 | ||
1223 | regulator_set_voltage(priv->core_pwr, 1000000, 1000000); | |
1224 | ret = regulator_enable(priv->core_pwr); | |
1225 | if (ret < 0) { | |
1226 | dev_err(priv->dev, | |
1227 | "Failed to enable core power: %d\n", ret); | |
1228 | return ret; | |
1229 | } | |
1230 | ||
1231 | regulator_set_voltage(priv->io_pwr, 3300000, 3300000); | |
1232 | ret = regulator_enable(priv->io_pwr); | |
1233 | if (ret < 0) { | |
1234 | dev_err(priv->dev, "Failed to enable io pwr: %d\n", | |
1235 | ret); | |
1236 | return ret; | |
1237 | } | |
1238 | ||
1239 | /* Reset whole chip through gpio pin or memory-mapped registers for | |
1240 | * different type of hardware | |
1241 | */ | |
1242 | if (priv->mcm) { | |
1243 | reset_control_assert(priv->rstc); | |
1244 | usleep_range(1000, 1100); | |
1245 | reset_control_deassert(priv->rstc); | |
1246 | } else { | |
1247 | gpiod_set_value_cansleep(priv->reset, 0); | |
1248 | usleep_range(1000, 1100); | |
1249 | gpiod_set_value_cansleep(priv->reset, 1); | |
1250 | } | |
1251 | ||
1252 | /* Waiting for MT7530 got to stable */ | |
1253 | INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP); | |
1254 | ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0, | |
1255 | 20, 1000000); | |
1256 | if (ret < 0) { | |
1257 | dev_err(priv->dev, "reset timeout\n"); | |
1258 | return ret; | |
1259 | } | |
1260 | ||
1261 | id = mt7530_read(priv, MT7530_CREV); | |
1262 | id >>= CHIP_NAME_SHIFT; | |
1263 | if (id != MT7530_ID) { | |
1264 | dev_err(priv->dev, "chip %x can't be supported\n", id); | |
1265 | return -ENODEV; | |
1266 | } | |
1267 | ||
1268 | /* Reset the switch through internal reset */ | |
1269 | mt7530_write(priv, MT7530_SYS_CTRL, | |
1270 | SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | | |
1271 | SYS_CTRL_REG_RST); | |
1272 | ||
1273 | /* Enable Port 6 only; P5 as GMAC5 which currently is not supported */ | |
1274 | val = mt7530_read(priv, MT7530_MHWTRAP); | |
1275 | val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS; | |
1276 | val |= MHWTRAP_MANUAL; | |
1277 | mt7530_write(priv, MT7530_MHWTRAP, val); | |
1278 | ||
1279 | /* Enable and reset MIB counters */ | |
1280 | mt7530_mib_reset(ds); | |
1281 | ||
1282 | mt7530_clear(priv, MT7530_MFC, UNU_FFP_MASK); | |
1283 | ||
1284 | for (i = 0; i < MT7530_NUM_PORTS; i++) { | |
1285 | /* Disable forwarding by default on all ports */ | |
1286 | mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK, | |
1287 | PCR_MATRIX_CLR); | |
1288 | ||
1289 | if (dsa_is_cpu_port(ds, i)) | |
1290 | mt7530_cpu_port_enable(priv, i); | |
1291 | else | |
1292 | mt7530_port_disable(ds, i, NULL); | |
1293 | } | |
1294 | ||
1295 | /* Flush the FDB table */ | |
18bd5949 | 1296 | ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL); |
b8f126a8 SW |
1297 | if (ret < 0) |
1298 | return ret; | |
1299 | ||
1300 | return 0; | |
1301 | } | |
1302 | ||
d78d6776 | 1303 | static const struct dsa_switch_ops mt7530_switch_ops = { |
b8f126a8 SW |
1304 | .get_tag_protocol = mtk_get_tag_protocol, |
1305 | .setup = mt7530_setup, | |
1306 | .get_strings = mt7530_get_strings, | |
1307 | .phy_read = mt7530_phy_read, | |
1308 | .phy_write = mt7530_phy_write, | |
1309 | .get_ethtool_stats = mt7530_get_ethtool_stats, | |
1310 | .get_sset_count = mt7530_get_sset_count, | |
1311 | .adjust_link = mt7530_adjust_link, | |
1312 | .port_enable = mt7530_port_enable, | |
1313 | .port_disable = mt7530_port_disable, | |
1314 | .port_stp_state_set = mt7530_stp_state_set, | |
1315 | .port_bridge_join = mt7530_port_bridge_join, | |
1316 | .port_bridge_leave = mt7530_port_bridge_leave, | |
b8f126a8 SW |
1317 | .port_fdb_add = mt7530_port_fdb_add, |
1318 | .port_fdb_del = mt7530_port_fdb_del, | |
1319 | .port_fdb_dump = mt7530_port_fdb_dump, | |
83163f7d SW |
1320 | .port_vlan_filtering = mt7530_port_vlan_filtering, |
1321 | .port_vlan_prepare = mt7530_port_vlan_prepare, | |
1322 | .port_vlan_add = mt7530_port_vlan_add, | |
1323 | .port_vlan_del = mt7530_port_vlan_del, | |
b8f126a8 SW |
1324 | }; |
1325 | ||
1326 | static int | |
1327 | mt7530_probe(struct mdio_device *mdiodev) | |
1328 | { | |
1329 | struct mt7530_priv *priv; | |
1330 | struct device_node *dn; | |
1331 | ||
1332 | dn = mdiodev->dev.of_node; | |
1333 | ||
1334 | priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL); | |
1335 | if (!priv) | |
1336 | return -ENOMEM; | |
1337 | ||
1338 | priv->ds = dsa_switch_alloc(&mdiodev->dev, DSA_MAX_PORTS); | |
1339 | if (!priv->ds) | |
1340 | return -ENOMEM; | |
1341 | ||
1342 | /* Use medatek,mcm property to distinguish hardware type that would | |
1343 | * casues a little bit differences on power-on sequence. | |
1344 | */ | |
1345 | priv->mcm = of_property_read_bool(dn, "mediatek,mcm"); | |
1346 | if (priv->mcm) { | |
1347 | dev_info(&mdiodev->dev, "MT7530 adapts as multi-chip module\n"); | |
1348 | ||
1349 | priv->rstc = devm_reset_control_get(&mdiodev->dev, "mcm"); | |
1350 | if (IS_ERR(priv->rstc)) { | |
1351 | dev_err(&mdiodev->dev, "Couldn't get our reset line\n"); | |
1352 | return PTR_ERR(priv->rstc); | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | priv->core_pwr = devm_regulator_get(&mdiodev->dev, "core"); | |
1357 | if (IS_ERR(priv->core_pwr)) | |
1358 | return PTR_ERR(priv->core_pwr); | |
1359 | ||
1360 | priv->io_pwr = devm_regulator_get(&mdiodev->dev, "io"); | |
1361 | if (IS_ERR(priv->io_pwr)) | |
1362 | return PTR_ERR(priv->io_pwr); | |
1363 | ||
1364 | /* Not MCM that indicates switch works as the remote standalone | |
1365 | * integrated circuit so the GPIO pin would be used to complete | |
1366 | * the reset, otherwise memory-mapped register accessing used | |
1367 | * through syscon provides in the case of MCM. | |
1368 | */ | |
1369 | if (!priv->mcm) { | |
1370 | priv->reset = devm_gpiod_get_optional(&mdiodev->dev, "reset", | |
1371 | GPIOD_OUT_LOW); | |
1372 | if (IS_ERR(priv->reset)) { | |
1373 | dev_err(&mdiodev->dev, "Couldn't get our reset line\n"); | |
1374 | return PTR_ERR(priv->reset); | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | priv->bus = mdiodev->bus; | |
1379 | priv->dev = &mdiodev->dev; | |
1380 | priv->ds->priv = priv; | |
1381 | priv->ds->ops = &mt7530_switch_ops; | |
1382 | mutex_init(&priv->reg_mutex); | |
1383 | dev_set_drvdata(&mdiodev->dev, priv); | |
1384 | ||
23c9ee49 | 1385 | return dsa_register_switch(priv->ds); |
b8f126a8 SW |
1386 | } |
1387 | ||
1388 | static void | |
1389 | mt7530_remove(struct mdio_device *mdiodev) | |
1390 | { | |
1391 | struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev); | |
1392 | int ret = 0; | |
1393 | ||
1394 | ret = regulator_disable(priv->core_pwr); | |
1395 | if (ret < 0) | |
1396 | dev_err(priv->dev, | |
1397 | "Failed to disable core power: %d\n", ret); | |
1398 | ||
1399 | ret = regulator_disable(priv->io_pwr); | |
1400 | if (ret < 0) | |
1401 | dev_err(priv->dev, "Failed to disable io pwr: %d\n", | |
1402 | ret); | |
1403 | ||
1404 | dsa_unregister_switch(priv->ds); | |
1405 | mutex_destroy(&priv->reg_mutex); | |
1406 | } | |
1407 | ||
1408 | static const struct of_device_id mt7530_of_match[] = { | |
1409 | { .compatible = "mediatek,mt7530" }, | |
1410 | { /* sentinel */ }, | |
1411 | }; | |
3c82b372 | 1412 | MODULE_DEVICE_TABLE(of, mt7530_of_match); |
b8f126a8 SW |
1413 | |
1414 | static struct mdio_driver mt7530_mdio_driver = { | |
1415 | .probe = mt7530_probe, | |
1416 | .remove = mt7530_remove, | |
1417 | .mdiodrv.driver = { | |
1418 | .name = "mt7530", | |
1419 | .of_match_table = mt7530_of_match, | |
1420 | }, | |
1421 | }; | |
1422 | ||
1423 | mdio_module_driver(mt7530_mdio_driver); | |
1424 | ||
1425 | MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); | |
1426 | MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch"); | |
1427 | MODULE_LICENSE("GPL"); |