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9#include <linux/module.h>
10#include <linux/phy.h>
11#include <linux/netdevice.h>
12#include <net/dsa.h>
13#include <linux/of_net.h>
14#include <linux/of_mdio.h>
15#include <linux/of_platform.h>
16#include <linux/if_bridge.h>
17#include <linux/mdio.h>
18#include <linux/phylink.h>
19#include <linux/gpio/consumer.h>
20#include <linux/etherdevice.h>
21
22#include "qca8k.h"
23
24#define MIB_DESC(_s, _o, _n) \
25 { \
26 .size = (_s), \
27 .offset = (_o), \
28 .name = (_n), \
29 }
30
31static const struct qca8k_mib_desc ar8327_mib[] = {
32 MIB_DESC(1, 0x00, "RxBroad"),
33 MIB_DESC(1, 0x04, "RxPause"),
34 MIB_DESC(1, 0x08, "RxMulti"),
35 MIB_DESC(1, 0x0c, "RxFcsErr"),
36 MIB_DESC(1, 0x10, "RxAlignErr"),
37 MIB_DESC(1, 0x14, "RxRunt"),
38 MIB_DESC(1, 0x18, "RxFragment"),
39 MIB_DESC(1, 0x1c, "Rx64Byte"),
40 MIB_DESC(1, 0x20, "Rx128Byte"),
41 MIB_DESC(1, 0x24, "Rx256Byte"),
42 MIB_DESC(1, 0x28, "Rx512Byte"),
43 MIB_DESC(1, 0x2c, "Rx1024Byte"),
44 MIB_DESC(1, 0x30, "Rx1518Byte"),
45 MIB_DESC(1, 0x34, "RxMaxByte"),
46 MIB_DESC(1, 0x38, "RxTooLong"),
47 MIB_DESC(2, 0x3c, "RxGoodByte"),
48 MIB_DESC(2, 0x44, "RxBadByte"),
49 MIB_DESC(1, 0x4c, "RxOverFlow"),
50 MIB_DESC(1, 0x50, "Filtered"),
51 MIB_DESC(1, 0x54, "TxBroad"),
52 MIB_DESC(1, 0x58, "TxPause"),
53 MIB_DESC(1, 0x5c, "TxMulti"),
54 MIB_DESC(1, 0x60, "TxUnderRun"),
55 MIB_DESC(1, 0x64, "Tx64Byte"),
56 MIB_DESC(1, 0x68, "Tx128Byte"),
57 MIB_DESC(1, 0x6c, "Tx256Byte"),
58 MIB_DESC(1, 0x70, "Tx512Byte"),
59 MIB_DESC(1, 0x74, "Tx1024Byte"),
60 MIB_DESC(1, 0x78, "Tx1518Byte"),
61 MIB_DESC(1, 0x7c, "TxMaxByte"),
62 MIB_DESC(1, 0x80, "TxOverSize"),
63 MIB_DESC(2, 0x84, "TxByte"),
64 MIB_DESC(1, 0x8c, "TxCollision"),
65 MIB_DESC(1, 0x90, "TxAbortCol"),
66 MIB_DESC(1, 0x94, "TxMultiCol"),
67 MIB_DESC(1, 0x98, "TxSingleCol"),
68 MIB_DESC(1, 0x9c, "TxExcDefer"),
69 MIB_DESC(1, 0xa0, "TxDefer"),
70 MIB_DESC(1, 0xa4, "TxLateCol"),
71};
72
73
74
75
76
77static u16 qca8k_current_page = 0xffff;
78
79static void
80qca8k_split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
81{
82 regaddr >>= 1;
83 *r1 = regaddr & 0x1e;
84
85 regaddr >>= 5;
86 *r2 = regaddr & 0x7;
87
88 regaddr >>= 3;
89 *page = regaddr & 0x3ff;
90}
91
92static int
93qca8k_mii_read32(struct mii_bus *bus, int phy_id, u32 regnum, u32 *val)
94{
95 int ret;
96
97 ret = bus->read(bus, phy_id, regnum);
98 if (ret >= 0) {
99 *val = ret;
100 ret = bus->read(bus, phy_id, regnum + 1);
101 *val |= ret << 16;
102 }
103
104 if (ret < 0) {
105 dev_err_ratelimited(&bus->dev,
106 "failed to read qca8k 32bit register\n");
107 *val = 0;
108 return ret;
109 }
110
111 return 0;
112}
113
114static void
115qca8k_mii_write32(struct mii_bus *bus, int phy_id, u32 regnum, u32 val)
116{
117 u16 lo, hi;
118 int ret;
119
120 lo = val & 0xffff;
121 hi = (u16)(val >> 16);
122
123 ret = bus->write(bus, phy_id, regnum, lo);
124 if (ret >= 0)
125 ret = bus->write(bus, phy_id, regnum + 1, hi);
126 if (ret < 0)
127 dev_err_ratelimited(&bus->dev,
128 "failed to write qca8k 32bit register\n");
129}
130
131static int
132qca8k_set_page(struct mii_bus *bus, u16 page)
133{
134 int ret;
135
136 if (page == qca8k_current_page)
137 return 0;
138
139 ret = bus->write(bus, 0x18, 0, page);
140 if (ret < 0) {
141 dev_err_ratelimited(&bus->dev,
142 "failed to set qca8k page\n");
143 return ret;
144 }
145
146 qca8k_current_page = page;
147 usleep_range(1000, 2000);
148 return 0;
149}
150
151static int
152qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val)
153{
154 struct mii_bus *bus = priv->bus;
155 u16 r1, r2, page;
156 int ret;
157
158 qca8k_split_addr(reg, &r1, &r2, &page);
159
160 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
161
162 ret = qca8k_set_page(bus, page);
163 if (ret < 0)
164 goto exit;
165
166 ret = qca8k_mii_read32(bus, 0x10 | r2, r1, val);
167
168exit:
169 mutex_unlock(&bus->mdio_lock);
170 return ret;
171}
172
173static int
174qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val)
175{
176 struct mii_bus *bus = priv->bus;
177 u16 r1, r2, page;
178 int ret;
179
180 qca8k_split_addr(reg, &r1, &r2, &page);
181
182 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
183
184 ret = qca8k_set_page(bus, page);
185 if (ret < 0)
186 goto exit;
187
188 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
189
190exit:
191 mutex_unlock(&bus->mdio_lock);
192 return ret;
193}
194
195static int
196qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val)
197{
198 struct mii_bus *bus = priv->bus;
199 u16 r1, r2, page;
200 u32 val;
201 int ret;
202
203 qca8k_split_addr(reg, &r1, &r2, &page);
204
205 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
206
207 ret = qca8k_set_page(bus, page);
208 if (ret < 0)
209 goto exit;
210
211 ret = qca8k_mii_read32(bus, 0x10 | r2, r1, &val);
212 if (ret < 0)
213 goto exit;
214
215 val &= ~mask;
216 val |= write_val;
217 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
218
219exit:
220 mutex_unlock(&bus->mdio_lock);
221
222 return ret;
223}
224
225static int
226qca8k_reg_set(struct qca8k_priv *priv, u32 reg, u32 val)
227{
228 return qca8k_rmw(priv, reg, 0, val);
229}
230
231static int
232qca8k_reg_clear(struct qca8k_priv *priv, u32 reg, u32 val)
233{
234 return qca8k_rmw(priv, reg, val, 0);
235}
236
237static int
238qca8k_regmap_read(void *ctx, uint32_t reg, uint32_t *val)
239{
240 struct qca8k_priv *priv = (struct qca8k_priv *)ctx;
241
242 return qca8k_read(priv, reg, val);
243}
244
245static int
246qca8k_regmap_write(void *ctx, uint32_t reg, uint32_t val)
247{
248 struct qca8k_priv *priv = (struct qca8k_priv *)ctx;
249
250 return qca8k_write(priv, reg, val);
251}
252
253static const struct regmap_range qca8k_readable_ranges[] = {
254 regmap_reg_range(0x0000, 0x00e4),
255 regmap_reg_range(0x0100, 0x0168),
256 regmap_reg_range(0x0200, 0x0270),
257 regmap_reg_range(0x0400, 0x0454),
258 regmap_reg_range(0x0600, 0x0718),
259 regmap_reg_range(0x0800, 0x0b70),
260 regmap_reg_range(0x0c00, 0x0c80),
261 regmap_reg_range(0x0e00, 0x0e98),
262 regmap_reg_range(0x1000, 0x10ac),
263 regmap_reg_range(0x1100, 0x11ac),
264 regmap_reg_range(0x1200, 0x12ac),
265 regmap_reg_range(0x1300, 0x13ac),
266 regmap_reg_range(0x1400, 0x14ac),
267 regmap_reg_range(0x1500, 0x15ac),
268 regmap_reg_range(0x1600, 0x16ac),
269
270};
271
272static const struct regmap_access_table qca8k_readable_table = {
273 .yes_ranges = qca8k_readable_ranges,
274 .n_yes_ranges = ARRAY_SIZE(qca8k_readable_ranges),
275};
276
277static struct regmap_config qca8k_regmap_config = {
278 .reg_bits = 16,
279 .val_bits = 32,
280 .reg_stride = 4,
281 .max_register = 0x16ac,
282 .reg_read = qca8k_regmap_read,
283 .reg_write = qca8k_regmap_write,
284 .rd_table = &qca8k_readable_table,
285};
286
287static int
288qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask)
289{
290 int ret, ret1;
291 u32 val;
292
293 ret = read_poll_timeout(qca8k_read, ret1, !(val & mask),
294 0, QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC, false,
295 priv, reg, &val);
296
297
298
299
300 if (ret < 0 && ret1 < 0)
301 return ret1;
302
303 return ret;
304}
305
306static int
307qca8k_fdb_read(struct qca8k_priv *priv, struct qca8k_fdb *fdb)
308{
309 u32 reg[4], val;
310 int i, ret;
311
312
313 for (i = 0; i < 4; i++) {
314 ret = qca8k_read(priv, QCA8K_REG_ATU_DATA0 + (i * 4), &val);
315 if (ret < 0)
316 return ret;
317
318 reg[i] = val;
319 }
320
321
322 fdb->vid = (reg[2] >> QCA8K_ATU_VID_S) & QCA8K_ATU_VID_M;
323
324 fdb->aging = reg[2] & QCA8K_ATU_STATUS_M;
325
326 fdb->port_mask = (reg[1] >> QCA8K_ATU_PORT_S) & QCA8K_ATU_PORT_M;
327
328 fdb->mac[0] = (reg[1] >> QCA8K_ATU_ADDR0_S) & 0xff;
329 fdb->mac[1] = reg[1] & 0xff;
330 fdb->mac[2] = (reg[0] >> QCA8K_ATU_ADDR2_S) & 0xff;
331 fdb->mac[3] = (reg[0] >> QCA8K_ATU_ADDR3_S) & 0xff;
332 fdb->mac[4] = (reg[0] >> QCA8K_ATU_ADDR4_S) & 0xff;
333 fdb->mac[5] = reg[0] & 0xff;
334
335 return 0;
336}
337
338static void
339qca8k_fdb_write(struct qca8k_priv *priv, u16 vid, u8 port_mask, const u8 *mac,
340 u8 aging)
341{
342 u32 reg[3] = { 0 };
343 int i;
344
345
346 reg[2] = (vid & QCA8K_ATU_VID_M) << QCA8K_ATU_VID_S;
347
348 reg[2] |= aging & QCA8K_ATU_STATUS_M;
349
350 reg[1] = (port_mask & QCA8K_ATU_PORT_M) << QCA8K_ATU_PORT_S;
351
352 reg[1] |= mac[0] << QCA8K_ATU_ADDR0_S;
353 reg[1] |= mac[1];
354 reg[0] |= mac[2] << QCA8K_ATU_ADDR2_S;
355 reg[0] |= mac[3] << QCA8K_ATU_ADDR3_S;
356 reg[0] |= mac[4] << QCA8K_ATU_ADDR4_S;
357 reg[0] |= mac[5];
358
359
360 for (i = 0; i < 3; i++)
361 qca8k_write(priv, QCA8K_REG_ATU_DATA0 + (i * 4), reg[i]);
362}
363
364static int
365qca8k_fdb_access(struct qca8k_priv *priv, enum qca8k_fdb_cmd cmd, int port)
366{
367 u32 reg;
368 int ret;
369
370
371 reg = QCA8K_ATU_FUNC_BUSY;
372 reg |= cmd;
373 if (port >= 0) {
374 reg |= QCA8K_ATU_FUNC_PORT_EN;
375 reg |= (port & QCA8K_ATU_FUNC_PORT_M) << QCA8K_ATU_FUNC_PORT_S;
376 }
377
378
379 ret = qca8k_write(priv, QCA8K_REG_ATU_FUNC, reg);
380 if (ret)
381 return ret;
382
383
384 ret = qca8k_busy_wait(priv, QCA8K_REG_ATU_FUNC, QCA8K_ATU_FUNC_BUSY);
385 if (ret)
386 return ret;
387
388
389 if (cmd == QCA8K_FDB_LOAD) {
390 ret = qca8k_read(priv, QCA8K_REG_ATU_FUNC, ®);
391 if (ret < 0)
392 return ret;
393 if (reg & QCA8K_ATU_FUNC_FULL)
394 return -1;
395 }
396
397 return 0;
398}
399
400static int
401qca8k_fdb_next(struct qca8k_priv *priv, struct qca8k_fdb *fdb, int port)
402{
403 int ret;
404
405 qca8k_fdb_write(priv, fdb->vid, fdb->port_mask, fdb->mac, fdb->aging);
406 ret = qca8k_fdb_access(priv, QCA8K_FDB_NEXT, port);
407 if (ret < 0)
408 return ret;
409
410 return qca8k_fdb_read(priv, fdb);
411}
412
413static int
414qca8k_fdb_add(struct qca8k_priv *priv, const u8 *mac, u16 port_mask,
415 u16 vid, u8 aging)
416{
417 int ret;
418
419 mutex_lock(&priv->reg_mutex);
420 qca8k_fdb_write(priv, vid, port_mask, mac, aging);
421 ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1);
422 mutex_unlock(&priv->reg_mutex);
423
424 return ret;
425}
426
427static int
428qca8k_fdb_del(struct qca8k_priv *priv, const u8 *mac, u16 port_mask, u16 vid)
429{
430 int ret;
431
432 mutex_lock(&priv->reg_mutex);
433 qca8k_fdb_write(priv, vid, port_mask, mac, 0);
434 ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1);
435 mutex_unlock(&priv->reg_mutex);
436
437 return ret;
438}
439
440static void
441qca8k_fdb_flush(struct qca8k_priv *priv)
442{
443 mutex_lock(&priv->reg_mutex);
444 qca8k_fdb_access(priv, QCA8K_FDB_FLUSH, -1);
445 mutex_unlock(&priv->reg_mutex);
446}
447
448static int
449qca8k_vlan_access(struct qca8k_priv *priv, enum qca8k_vlan_cmd cmd, u16 vid)
450{
451 u32 reg;
452 int ret;
453
454
455 reg = QCA8K_VTU_FUNC1_BUSY;
456 reg |= cmd;
457 reg |= vid << QCA8K_VTU_FUNC1_VID_S;
458
459
460 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC1, reg);
461 if (ret)
462 return ret;
463
464
465 ret = qca8k_busy_wait(priv, QCA8K_REG_VTU_FUNC1, QCA8K_VTU_FUNC1_BUSY);
466 if (ret)
467 return ret;
468
469
470 if (cmd == QCA8K_VLAN_LOAD) {
471 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC1, ®);
472 if (ret < 0)
473 return ret;
474 if (reg & QCA8K_VTU_FUNC1_FULL)
475 return -ENOMEM;
476 }
477
478 return 0;
479}
480
481static int
482qca8k_vlan_add(struct qca8k_priv *priv, u8 port, u16 vid, bool untagged)
483{
484 u32 reg;
485 int ret;
486
487
488
489
490
491 if (vid == 0)
492 return 0;
493
494 mutex_lock(&priv->reg_mutex);
495 ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid);
496 if (ret < 0)
497 goto out;
498
499 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®);
500 if (ret < 0)
501 goto out;
502 reg |= QCA8K_VTU_FUNC0_VALID | QCA8K_VTU_FUNC0_IVL_EN;
503 reg &= ~(QCA8K_VTU_FUNC0_EG_MODE_MASK << QCA8K_VTU_FUNC0_EG_MODE_S(port));
504 if (untagged)
505 reg |= QCA8K_VTU_FUNC0_EG_MODE_UNTAG <<
506 QCA8K_VTU_FUNC0_EG_MODE_S(port);
507 else
508 reg |= QCA8K_VTU_FUNC0_EG_MODE_TAG <<
509 QCA8K_VTU_FUNC0_EG_MODE_S(port);
510
511 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg);
512 if (ret)
513 goto out;
514 ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid);
515
516out:
517 mutex_unlock(&priv->reg_mutex);
518
519 return ret;
520}
521
522static int
523qca8k_vlan_del(struct qca8k_priv *priv, u8 port, u16 vid)
524{
525 u32 reg, mask;
526 int ret, i;
527 bool del;
528
529 mutex_lock(&priv->reg_mutex);
530 ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid);
531 if (ret < 0)
532 goto out;
533
534 ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®);
535 if (ret < 0)
536 goto out;
537 reg &= ~(3 << QCA8K_VTU_FUNC0_EG_MODE_S(port));
538 reg |= QCA8K_VTU_FUNC0_EG_MODE_NOT <<
539 QCA8K_VTU_FUNC0_EG_MODE_S(port);
540
541
542 del = true;
543 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
544 mask = QCA8K_VTU_FUNC0_EG_MODE_NOT;
545 mask <<= QCA8K_VTU_FUNC0_EG_MODE_S(i);
546
547 if ((reg & mask) != mask) {
548 del = false;
549 break;
550 }
551 }
552
553 if (del) {
554 ret = qca8k_vlan_access(priv, QCA8K_VLAN_PURGE, vid);
555 } else {
556 ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg);
557 if (ret)
558 goto out;
559 ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid);
560 }
561
562out:
563 mutex_unlock(&priv->reg_mutex);
564
565 return ret;
566}
567
568static int
569qca8k_mib_init(struct qca8k_priv *priv)
570{
571 int ret;
572
573 mutex_lock(&priv->reg_mutex);
574 ret = qca8k_reg_set(priv, QCA8K_REG_MIB, QCA8K_MIB_FLUSH | QCA8K_MIB_BUSY);
575 if (ret)
576 goto exit;
577
578 ret = qca8k_busy_wait(priv, QCA8K_REG_MIB, QCA8K_MIB_BUSY);
579 if (ret)
580 goto exit;
581
582 ret = qca8k_reg_set(priv, QCA8K_REG_MIB, QCA8K_MIB_CPU_KEEP);
583 if (ret)
584 goto exit;
585
586 ret = qca8k_write(priv, QCA8K_REG_MODULE_EN, QCA8K_MODULE_EN_MIB);
587
588exit:
589 mutex_unlock(&priv->reg_mutex);
590 return ret;
591}
592
593static void
594qca8k_port_set_status(struct qca8k_priv *priv, int port, int enable)
595{
596 u32 mask = QCA8K_PORT_STATUS_TXMAC | QCA8K_PORT_STATUS_RXMAC;
597
598
599 if (port > 0 && port < 6)
600 mask |= QCA8K_PORT_STATUS_LINK_AUTO;
601
602 if (enable)
603 qca8k_reg_set(priv, QCA8K_REG_PORT_STATUS(port), mask);
604 else
605 qca8k_reg_clear(priv, QCA8K_REG_PORT_STATUS(port), mask);
606}
607
608static u32
609qca8k_port_to_phy(int port)
610{
611
612
613
614
615
616
617
618
619
620 return port - 1;
621}
622
623static int
624qca8k_mdio_busy_wait(struct mii_bus *bus, u32 reg, u32 mask)
625{
626 u16 r1, r2, page;
627 u32 val;
628 int ret, ret1;
629
630 qca8k_split_addr(reg, &r1, &r2, &page);
631
632 ret = read_poll_timeout(qca8k_mii_read32, ret1, !(val & mask), 0,
633 QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC, false,
634 bus, 0x10 | r2, r1, &val);
635
636
637
638
639 if (ret < 0 && ret1 < 0)
640 return ret1;
641
642 return ret;
643}
644
645static int
646qca8k_mdio_write(struct mii_bus *bus, int phy, int regnum, u16 data)
647{
648 u16 r1, r2, page;
649 u32 val;
650 int ret;
651
652 if (regnum >= QCA8K_MDIO_MASTER_MAX_REG)
653 return -EINVAL;
654
655 val = QCA8K_MDIO_MASTER_BUSY | QCA8K_MDIO_MASTER_EN |
656 QCA8K_MDIO_MASTER_WRITE | QCA8K_MDIO_MASTER_PHY_ADDR(phy) |
657 QCA8K_MDIO_MASTER_REG_ADDR(regnum) |
658 QCA8K_MDIO_MASTER_DATA(data);
659
660 qca8k_split_addr(QCA8K_MDIO_MASTER_CTRL, &r1, &r2, &page);
661
662 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
663
664 ret = qca8k_set_page(bus, page);
665 if (ret)
666 goto exit;
667
668 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
669
670 ret = qca8k_mdio_busy_wait(bus, QCA8K_MDIO_MASTER_CTRL,
671 QCA8K_MDIO_MASTER_BUSY);
672
673exit:
674
675 qca8k_mii_write32(bus, 0x10 | r2, r1, 0);
676
677 mutex_unlock(&bus->mdio_lock);
678
679 return ret;
680}
681
682static int
683qca8k_mdio_read(struct mii_bus *bus, int phy, int regnum)
684{
685 u16 r1, r2, page;
686 u32 val;
687 int ret;
688
689 if (regnum >= QCA8K_MDIO_MASTER_MAX_REG)
690 return -EINVAL;
691
692 val = QCA8K_MDIO_MASTER_BUSY | QCA8K_MDIO_MASTER_EN |
693 QCA8K_MDIO_MASTER_READ | QCA8K_MDIO_MASTER_PHY_ADDR(phy) |
694 QCA8K_MDIO_MASTER_REG_ADDR(regnum);
695
696 qca8k_split_addr(QCA8K_MDIO_MASTER_CTRL, &r1, &r2, &page);
697
698 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
699
700 ret = qca8k_set_page(bus, page);
701 if (ret)
702 goto exit;
703
704 qca8k_mii_write32(bus, 0x10 | r2, r1, val);
705
706 ret = qca8k_mdio_busy_wait(bus, QCA8K_MDIO_MASTER_CTRL,
707 QCA8K_MDIO_MASTER_BUSY);
708 if (ret)
709 goto exit;
710
711 ret = qca8k_mii_read32(bus, 0x10 | r2, r1, &val);
712
713exit:
714
715 qca8k_mii_write32(bus, 0x10 | r2, r1, 0);
716
717 mutex_unlock(&bus->mdio_lock);
718
719 if (ret >= 0)
720 ret = val & QCA8K_MDIO_MASTER_DATA_MASK;
721
722 return ret;
723}
724
725static int
726qca8k_internal_mdio_write(struct mii_bus *slave_bus, int phy, int regnum, u16 data)
727{
728 struct qca8k_priv *priv = slave_bus->priv;
729 struct mii_bus *bus = priv->bus;
730
731 return qca8k_mdio_write(bus, phy, regnum, data);
732}
733
734static int
735qca8k_internal_mdio_read(struct mii_bus *slave_bus, int phy, int regnum)
736{
737 struct qca8k_priv *priv = slave_bus->priv;
738 struct mii_bus *bus = priv->bus;
739
740 return qca8k_mdio_read(bus, phy, regnum);
741}
742
743static int
744qca8k_phy_write(struct dsa_switch *ds, int port, int regnum, u16 data)
745{
746 struct qca8k_priv *priv = ds->priv;
747
748
749
750
751
752 if (priv->legacy_phy_port_mapping)
753 port = qca8k_port_to_phy(port) % PHY_MAX_ADDR;
754
755 return qca8k_mdio_write(priv->bus, port, regnum, data);
756}
757
758static int
759qca8k_phy_read(struct dsa_switch *ds, int port, int regnum)
760{
761 struct qca8k_priv *priv = ds->priv;
762 int ret;
763
764
765
766
767
768 if (priv->legacy_phy_port_mapping)
769 port = qca8k_port_to_phy(port) % PHY_MAX_ADDR;
770
771 ret = qca8k_mdio_read(priv->bus, port, regnum);
772
773 if (ret < 0)
774 return 0xffff;
775
776 return ret;
777}
778
779static int
780qca8k_mdio_register(struct qca8k_priv *priv, struct device_node *mdio)
781{
782 struct dsa_switch *ds = priv->ds;
783 struct mii_bus *bus;
784
785 bus = devm_mdiobus_alloc(ds->dev);
786
787 if (!bus)
788 return -ENOMEM;
789
790 bus->priv = (void *)priv;
791 bus->name = "qca8k slave mii";
792 bus->read = qca8k_internal_mdio_read;
793 bus->write = qca8k_internal_mdio_write;
794 snprintf(bus->id, MII_BUS_ID_SIZE, "qca8k-%d",
795 ds->index);
796
797 bus->parent = ds->dev;
798 bus->phy_mask = ~ds->phys_mii_mask;
799
800 ds->slave_mii_bus = bus;
801
802 return devm_of_mdiobus_register(priv->dev, bus, mdio);
803}
804
805static int
806qca8k_setup_mdio_bus(struct qca8k_priv *priv)
807{
808 u32 internal_mdio_mask = 0, external_mdio_mask = 0, reg;
809 struct device_node *ports, *port, *mdio;
810 phy_interface_t mode;
811 int err;
812
813 ports = of_get_child_by_name(priv->dev->of_node, "ports");
814 if (!ports)
815 ports = of_get_child_by_name(priv->dev->of_node, "ethernet-ports");
816
817 if (!ports)
818 return -EINVAL;
819
820 for_each_available_child_of_node(ports, port) {
821 err = of_property_read_u32(port, "reg", ®);
822 if (err) {
823 of_node_put(port);
824 of_node_put(ports);
825 return err;
826 }
827
828 if (!dsa_is_user_port(priv->ds, reg))
829 continue;
830
831 of_get_phy_mode(port, &mode);
832
833 if (of_property_read_bool(port, "phy-handle") &&
834 mode != PHY_INTERFACE_MODE_INTERNAL)
835 external_mdio_mask |= BIT(reg);
836 else
837 internal_mdio_mask |= BIT(reg);
838 }
839
840 of_node_put(ports);
841 if (!external_mdio_mask && !internal_mdio_mask) {
842 dev_err(priv->dev, "no PHYs are defined.\n");
843 return -EINVAL;
844 }
845
846
847
848
849
850
851
852
853
854
855
856
857 if (!!external_mdio_mask && !!internal_mdio_mask) {
858 dev_err(priv->dev, "either internal or external mdio bus configuration is supported.\n");
859 return -EINVAL;
860 }
861
862 if (external_mdio_mask) {
863
864
865
866
867 return qca8k_reg_clear(priv, QCA8K_MDIO_MASTER_CTRL,
868 QCA8K_MDIO_MASTER_EN);
869 }
870
871
872 mdio = of_get_child_by_name(priv->dev->of_node, "mdio");
873 if (of_device_is_available(mdio)) {
874 err = qca8k_mdio_register(priv, mdio);
875 if (err)
876 of_node_put(mdio);
877
878 return err;
879 }
880
881
882
883
884 priv->legacy_phy_port_mapping = true;
885 priv->ops.phy_read = qca8k_phy_read;
886 priv->ops.phy_write = qca8k_phy_write;
887
888 return 0;
889}
890
891static int
892qca8k_setup_of_rgmii_delay(struct qca8k_priv *priv)
893{
894 struct device_node *port_dn;
895 phy_interface_t mode;
896 struct dsa_port *dp;
897 u32 val;
898
899
900 dp = dsa_to_port(priv->ds, 0);
901
902 port_dn = dp->dn;
903
904
905 of_get_phy_mode(port_dn, &mode);
906 if (mode != PHY_INTERFACE_MODE_RGMII_ID &&
907 mode != PHY_INTERFACE_MODE_RGMII_RXID &&
908 mode != PHY_INTERFACE_MODE_RGMII_TXID) {
909 return 0;
910 }
911
912 switch (mode) {
913 case PHY_INTERFACE_MODE_RGMII_ID:
914 case PHY_INTERFACE_MODE_RGMII_RXID:
915 if (of_property_read_u32(port_dn, "rx-internal-delay-ps", &val))
916 val = 2;
917 else
918
919 val = val / 1000;
920
921 if (val > QCA8K_MAX_DELAY) {
922 dev_err(priv->dev, "rgmii rx delay is limited to a max value of 3ns, setting to the max value");
923 val = 3;
924 }
925
926 priv->rgmii_rx_delay = val;
927
928 if (mode != PHY_INTERFACE_MODE_RGMII_ID)
929 break;
930
931 fallthrough;
932 case PHY_INTERFACE_MODE_RGMII_TXID:
933 if (of_property_read_u32(port_dn, "tx-internal-delay-ps", &val))
934 val = 1;
935 else
936
937 val = val / 1000;
938
939 if (val > QCA8K_MAX_DELAY) {
940 dev_err(priv->dev, "rgmii tx delay is limited to a max value of 3ns, setting to the max value");
941 val = 3;
942 }
943
944 priv->rgmii_tx_delay = val;
945 break;
946 default:
947 return 0;
948 }
949
950 return 0;
951}
952
953static int
954qca8k_setup(struct dsa_switch *ds)
955{
956 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
957 int ret, i;
958 u32 mask;
959
960
961 if (!dsa_is_cpu_port(ds, 0)) {
962 dev_err(priv->dev, "port 0 is not the CPU port");
963 return -EINVAL;
964 }
965
966 mutex_init(&priv->reg_mutex);
967
968
969 priv->regmap = devm_regmap_init(ds->dev, NULL, priv,
970 &qca8k_regmap_config);
971 if (IS_ERR(priv->regmap))
972 dev_warn(priv->dev, "regmap initialization failed");
973
974 ret = qca8k_setup_mdio_bus(priv);
975 if (ret)
976 return ret;
977
978 ret = qca8k_setup_of_rgmii_delay(priv);
979 if (ret)
980 return ret;
981
982
983 ret = qca8k_reg_set(priv, QCA8K_REG_GLOBAL_FW_CTRL0,
984 QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN);
985 if (ret) {
986 dev_err(priv->dev, "failed enabling CPU port");
987 return ret;
988 }
989
990
991 ret = qca8k_mib_init(priv);
992 if (ret)
993 dev_warn(priv->dev, "mib init failed");
994
995
996 ret = qca8k_write(priv, QCA8K_REG_PORT_HDR_CTRL(QCA8K_CPU_PORT),
997 QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_TX_S |
998 QCA8K_PORT_HDR_CTRL_ALL << QCA8K_PORT_HDR_CTRL_RX_S);
999 if (ret) {
1000 dev_err(priv->dev, "failed enabling QCA header mode");
1001 return ret;
1002 }
1003
1004
1005 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1006 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(i),
1007 QCA8K_PORT_LOOKUP_MEMBER, 0);
1008 if (ret)
1009 return ret;
1010 }
1011
1012
1013 for (i = 1; i < QCA8K_NUM_PORTS; i++)
1014 qca8k_port_set_status(priv, i, 0);
1015
1016
1017 ret = qca8k_write(priv, QCA8K_REG_GLOBAL_FW_CTRL1,
1018 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_IGMP_DP_S |
1019 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_BC_DP_S |
1020 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_MC_DP_S |
1021 BIT(0) << QCA8K_GLOBAL_FW_CTRL1_UC_DP_S);
1022 if (ret)
1023 return ret;
1024
1025
1026 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1027
1028 if (dsa_is_cpu_port(ds, i)) {
1029 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(QCA8K_CPU_PORT),
1030 QCA8K_PORT_LOOKUP_MEMBER, dsa_user_ports(ds));
1031 if (ret)
1032 return ret;
1033 }
1034
1035
1036 if (dsa_is_user_port(ds, i)) {
1037 int shift = 16 * (i % 2);
1038
1039 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(i),
1040 QCA8K_PORT_LOOKUP_MEMBER,
1041 BIT(QCA8K_CPU_PORT));
1042 if (ret)
1043 return ret;
1044
1045
1046 ret = qca8k_reg_set(priv, QCA8K_PORT_LOOKUP_CTRL(i),
1047 QCA8K_PORT_LOOKUP_LEARN);
1048 if (ret)
1049 return ret;
1050
1051
1052
1053
1054 ret = qca8k_rmw(priv, QCA8K_EGRESS_VLAN(i),
1055 0xfff << shift,
1056 QCA8K_PORT_VID_DEF << shift);
1057 if (ret)
1058 return ret;
1059
1060 ret = qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(i),
1061 QCA8K_PORT_VLAN_CVID(QCA8K_PORT_VID_DEF) |
1062 QCA8K_PORT_VLAN_SVID(QCA8K_PORT_VID_DEF));
1063 if (ret)
1064 return ret;
1065 }
1066 }
1067
1068
1069
1070
1071
1072
1073
1074 if (priv->switch_id == QCA8K_ID_QCA8337) {
1075 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1076 switch (i) {
1077
1078
1079
1080 case 0:
1081 case 5:
1082 case 6:
1083 mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
1084 QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
1085 QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x4) |
1086 QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x4) |
1087 QCA8K_PORT_HOL_CTRL0_EG_PRI4(0x6) |
1088 QCA8K_PORT_HOL_CTRL0_EG_PRI5(0x8) |
1089 QCA8K_PORT_HOL_CTRL0_EG_PORT(0x1e);
1090 break;
1091 default:
1092 mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) |
1093 QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) |
1094 QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x6) |
1095 QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x8) |
1096 QCA8K_PORT_HOL_CTRL0_EG_PORT(0x19);
1097 }
1098 qca8k_write(priv, QCA8K_REG_PORT_HOL_CTRL0(i), mask);
1099
1100 mask = QCA8K_PORT_HOL_CTRL1_ING(0x6) |
1101 QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
1102 QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
1103 QCA8K_PORT_HOL_CTRL1_WRED_EN;
1104 qca8k_rmw(priv, QCA8K_REG_PORT_HOL_CTRL1(i),
1105 QCA8K_PORT_HOL_CTRL1_ING_BUF |
1106 QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN |
1107 QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN |
1108 QCA8K_PORT_HOL_CTRL1_WRED_EN,
1109 mask);
1110 }
1111 }
1112
1113
1114 if (priv->switch_id == QCA8K_ID_QCA8327) {
1115 mask = QCA8K_GLOBAL_FC_GOL_XON_THRES(288) |
1116 QCA8K_GLOBAL_FC_GOL_XOFF_THRES(496);
1117 qca8k_rmw(priv, QCA8K_REG_GLOBAL_FC_THRESH,
1118 QCA8K_GLOBAL_FC_GOL_XON_THRES_S |
1119 QCA8K_GLOBAL_FC_GOL_XOFF_THRES_S,
1120 mask);
1121 }
1122
1123
1124 for (i = 0; i < QCA8K_NUM_PORTS; i++)
1125 priv->port_mtu[i] = ETH_FRAME_LEN + ETH_FCS_LEN;
1126 ret = qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, ETH_FRAME_LEN + ETH_FCS_LEN);
1127 if (ret)
1128 dev_warn(priv->dev, "failed setting MTU settings");
1129
1130
1131 qca8k_fdb_flush(priv);
1132
1133
1134 ds->pcs_poll = true;
1135
1136 return 0;
1137}
1138
1139static void
1140qca8k_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
1141 const struct phylink_link_state *state)
1142{
1143 struct qca8k_priv *priv = ds->priv;
1144 u32 reg, val;
1145 int ret;
1146
1147 switch (port) {
1148 case 0:
1149 if (state->interface != PHY_INTERFACE_MODE_RGMII &&
1150 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1151 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1152 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1153 state->interface != PHY_INTERFACE_MODE_SGMII)
1154 return;
1155
1156 reg = QCA8K_REG_PORT0_PAD_CTRL;
1157 break;
1158 case 1:
1159 case 2:
1160 case 3:
1161 case 4:
1162 case 5:
1163
1164 return;
1165 case 6:
1166 if (state->interface != PHY_INTERFACE_MODE_RGMII &&
1167 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1168 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1169 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1170 state->interface != PHY_INTERFACE_MODE_SGMII &&
1171 state->interface != PHY_INTERFACE_MODE_1000BASEX)
1172 return;
1173
1174 reg = QCA8K_REG_PORT6_PAD_CTRL;
1175 break;
1176 default:
1177 dev_err(ds->dev, "%s: unsupported port: %i\n", __func__, port);
1178 return;
1179 }
1180
1181 if (port != 6 && phylink_autoneg_inband(mode)) {
1182 dev_err(ds->dev, "%s: in-band negotiation unsupported\n",
1183 __func__);
1184 return;
1185 }
1186
1187 switch (state->interface) {
1188 case PHY_INTERFACE_MODE_RGMII:
1189
1190 qca8k_write(priv, reg, QCA8K_PORT_PAD_RGMII_EN);
1191 break;
1192 case PHY_INTERFACE_MODE_RGMII_ID:
1193 case PHY_INTERFACE_MODE_RGMII_TXID:
1194 case PHY_INTERFACE_MODE_RGMII_RXID:
1195
1196
1197
1198
1199 qca8k_write(priv, reg,
1200 QCA8K_PORT_PAD_RGMII_EN |
1201 QCA8K_PORT_PAD_RGMII_TX_DELAY(priv->rgmii_tx_delay) |
1202 QCA8K_PORT_PAD_RGMII_RX_DELAY(priv->rgmii_rx_delay) |
1203 QCA8K_PORT_PAD_RGMII_TX_DELAY_EN |
1204 QCA8K_PORT_PAD_RGMII_RX_DELAY_EN);
1205
1206 if (priv->switch_id == QCA8K_ID_QCA8337)
1207 qca8k_write(priv, QCA8K_REG_PORT5_PAD_CTRL,
1208 QCA8K_PORT_PAD_RGMII_RX_DELAY_EN);
1209 break;
1210 case PHY_INTERFACE_MODE_SGMII:
1211 case PHY_INTERFACE_MODE_1000BASEX:
1212
1213 qca8k_write(priv, reg, QCA8K_PORT_PAD_SGMII_EN);
1214
1215
1216 ret = qca8k_read(priv, QCA8K_REG_PWS, &val);
1217 if (ret)
1218 return;
1219 if (phylink_autoneg_inband(mode))
1220 val &= ~QCA8K_PWS_SERDES_AEN_DIS;
1221 else
1222 val |= QCA8K_PWS_SERDES_AEN_DIS;
1223 qca8k_write(priv, QCA8K_REG_PWS, val);
1224
1225
1226 ret = qca8k_read(priv, QCA8K_REG_SGMII_CTRL, &val);
1227 if (ret)
1228 return;
1229
1230 val |= QCA8K_SGMII_EN_PLL | QCA8K_SGMII_EN_RX |
1231 QCA8K_SGMII_EN_TX | QCA8K_SGMII_EN_SD;
1232
1233 if (dsa_is_cpu_port(ds, port)) {
1234
1235 val &= ~QCA8K_SGMII_MODE_CTRL_MASK;
1236 val |= QCA8K_SGMII_MODE_CTRL_PHY;
1237 } else if (state->interface == PHY_INTERFACE_MODE_SGMII) {
1238 val &= ~QCA8K_SGMII_MODE_CTRL_MASK;
1239 val |= QCA8K_SGMII_MODE_CTRL_MAC;
1240 } else if (state->interface == PHY_INTERFACE_MODE_1000BASEX) {
1241 val &= ~QCA8K_SGMII_MODE_CTRL_MASK;
1242 val |= QCA8K_SGMII_MODE_CTRL_BASEX;
1243 }
1244
1245 qca8k_write(priv, QCA8K_REG_SGMII_CTRL, val);
1246 break;
1247 default:
1248 dev_err(ds->dev, "xMII mode %s not supported for port %d\n",
1249 phy_modes(state->interface), port);
1250 return;
1251 }
1252}
1253
1254static void
1255qca8k_phylink_validate(struct dsa_switch *ds, int port,
1256 unsigned long *supported,
1257 struct phylink_link_state *state)
1258{
1259 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
1260
1261 switch (port) {
1262 case 0:
1263 if (state->interface != PHY_INTERFACE_MODE_NA &&
1264 state->interface != PHY_INTERFACE_MODE_RGMII &&
1265 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1266 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1267 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1268 state->interface != PHY_INTERFACE_MODE_SGMII)
1269 goto unsupported;
1270 break;
1271 case 1:
1272 case 2:
1273 case 3:
1274 case 4:
1275 case 5:
1276
1277 if (state->interface != PHY_INTERFACE_MODE_NA &&
1278 state->interface != PHY_INTERFACE_MODE_GMII &&
1279 state->interface != PHY_INTERFACE_MODE_INTERNAL)
1280 goto unsupported;
1281 break;
1282 case 6:
1283 if (state->interface != PHY_INTERFACE_MODE_NA &&
1284 state->interface != PHY_INTERFACE_MODE_RGMII &&
1285 state->interface != PHY_INTERFACE_MODE_RGMII_ID &&
1286 state->interface != PHY_INTERFACE_MODE_RGMII_TXID &&
1287 state->interface != PHY_INTERFACE_MODE_RGMII_RXID &&
1288 state->interface != PHY_INTERFACE_MODE_SGMII &&
1289 state->interface != PHY_INTERFACE_MODE_1000BASEX)
1290 goto unsupported;
1291 break;
1292 default:
1293unsupported:
1294 linkmode_zero(supported);
1295 return;
1296 }
1297
1298 phylink_set_port_modes(mask);
1299 phylink_set(mask, Autoneg);
1300
1301 phylink_set(mask, 1000baseT_Full);
1302 phylink_set(mask, 10baseT_Half);
1303 phylink_set(mask, 10baseT_Full);
1304 phylink_set(mask, 100baseT_Half);
1305 phylink_set(mask, 100baseT_Full);
1306
1307 if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
1308 phylink_set(mask, 1000baseX_Full);
1309
1310 phylink_set(mask, Pause);
1311 phylink_set(mask, Asym_Pause);
1312
1313 linkmode_and(supported, supported, mask);
1314 linkmode_and(state->advertising, state->advertising, mask);
1315}
1316
1317static int
1318qca8k_phylink_mac_link_state(struct dsa_switch *ds, int port,
1319 struct phylink_link_state *state)
1320{
1321 struct qca8k_priv *priv = ds->priv;
1322 u32 reg;
1323 int ret;
1324
1325 ret = qca8k_read(priv, QCA8K_REG_PORT_STATUS(port), ®);
1326 if (ret < 0)
1327 return ret;
1328
1329 state->link = !!(reg & QCA8K_PORT_STATUS_LINK_UP);
1330 state->an_complete = state->link;
1331 state->an_enabled = !!(reg & QCA8K_PORT_STATUS_LINK_AUTO);
1332 state->duplex = (reg & QCA8K_PORT_STATUS_DUPLEX) ? DUPLEX_FULL :
1333 DUPLEX_HALF;
1334
1335 switch (reg & QCA8K_PORT_STATUS_SPEED) {
1336 case QCA8K_PORT_STATUS_SPEED_10:
1337 state->speed = SPEED_10;
1338 break;
1339 case QCA8K_PORT_STATUS_SPEED_100:
1340 state->speed = SPEED_100;
1341 break;
1342 case QCA8K_PORT_STATUS_SPEED_1000:
1343 state->speed = SPEED_1000;
1344 break;
1345 default:
1346 state->speed = SPEED_UNKNOWN;
1347 break;
1348 }
1349
1350 state->pause = MLO_PAUSE_NONE;
1351 if (reg & QCA8K_PORT_STATUS_RXFLOW)
1352 state->pause |= MLO_PAUSE_RX;
1353 if (reg & QCA8K_PORT_STATUS_TXFLOW)
1354 state->pause |= MLO_PAUSE_TX;
1355
1356 return 1;
1357}
1358
1359static void
1360qca8k_phylink_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode,
1361 phy_interface_t interface)
1362{
1363 struct qca8k_priv *priv = ds->priv;
1364
1365 qca8k_port_set_status(priv, port, 0);
1366}
1367
1368static void
1369qca8k_phylink_mac_link_up(struct dsa_switch *ds, int port, unsigned int mode,
1370 phy_interface_t interface, struct phy_device *phydev,
1371 int speed, int duplex, bool tx_pause, bool rx_pause)
1372{
1373 struct qca8k_priv *priv = ds->priv;
1374 u32 reg;
1375
1376 if (phylink_autoneg_inband(mode)) {
1377 reg = QCA8K_PORT_STATUS_LINK_AUTO;
1378 } else {
1379 switch (speed) {
1380 case SPEED_10:
1381 reg = QCA8K_PORT_STATUS_SPEED_10;
1382 break;
1383 case SPEED_100:
1384 reg = QCA8K_PORT_STATUS_SPEED_100;
1385 break;
1386 case SPEED_1000:
1387 reg = QCA8K_PORT_STATUS_SPEED_1000;
1388 break;
1389 default:
1390 reg = QCA8K_PORT_STATUS_LINK_AUTO;
1391 break;
1392 }
1393
1394 if (duplex == DUPLEX_FULL)
1395 reg |= QCA8K_PORT_STATUS_DUPLEX;
1396
1397 if (rx_pause || dsa_is_cpu_port(ds, port))
1398 reg |= QCA8K_PORT_STATUS_RXFLOW;
1399
1400 if (tx_pause || dsa_is_cpu_port(ds, port))
1401 reg |= QCA8K_PORT_STATUS_TXFLOW;
1402 }
1403
1404 reg |= QCA8K_PORT_STATUS_TXMAC | QCA8K_PORT_STATUS_RXMAC;
1405
1406 qca8k_write(priv, QCA8K_REG_PORT_STATUS(port), reg);
1407}
1408
1409static void
1410qca8k_get_strings(struct dsa_switch *ds, int port, u32 stringset, uint8_t *data)
1411{
1412 int i;
1413
1414 if (stringset != ETH_SS_STATS)
1415 return;
1416
1417 for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++)
1418 strncpy(data + i * ETH_GSTRING_LEN, ar8327_mib[i].name,
1419 ETH_GSTRING_LEN);
1420}
1421
1422static void
1423qca8k_get_ethtool_stats(struct dsa_switch *ds, int port,
1424 uint64_t *data)
1425{
1426 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1427 const struct qca8k_mib_desc *mib;
1428 u32 reg, i, val;
1429 u32 hi = 0;
1430 int ret;
1431
1432 for (i = 0; i < ARRAY_SIZE(ar8327_mib); i++) {
1433 mib = &ar8327_mib[i];
1434 reg = QCA8K_PORT_MIB_COUNTER(port) + mib->offset;
1435
1436 ret = qca8k_read(priv, reg, &val);
1437 if (ret < 0)
1438 continue;
1439
1440 if (mib->size == 2) {
1441 ret = qca8k_read(priv, reg + 4, &hi);
1442 if (ret < 0)
1443 continue;
1444 }
1445
1446 data[i] = val;
1447 if (mib->size == 2)
1448 data[i] |= (u64)hi << 32;
1449 }
1450}
1451
1452static int
1453qca8k_get_sset_count(struct dsa_switch *ds, int port, int sset)
1454{
1455 if (sset != ETH_SS_STATS)
1456 return 0;
1457
1458 return ARRAY_SIZE(ar8327_mib);
1459}
1460
1461static int
1462qca8k_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *eee)
1463{
1464 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1465 u32 lpi_en = QCA8K_REG_EEE_CTRL_LPI_EN(port);
1466 u32 reg;
1467 int ret;
1468
1469 mutex_lock(&priv->reg_mutex);
1470 ret = qca8k_read(priv, QCA8K_REG_EEE_CTRL, ®);
1471 if (ret < 0)
1472 goto exit;
1473
1474 if (eee->eee_enabled)
1475 reg |= lpi_en;
1476 else
1477 reg &= ~lpi_en;
1478 ret = qca8k_write(priv, QCA8K_REG_EEE_CTRL, reg);
1479
1480exit:
1481 mutex_unlock(&priv->reg_mutex);
1482 return ret;
1483}
1484
1485static int
1486qca8k_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
1487{
1488
1489 return 0;
1490}
1491
1492static void
1493qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1494{
1495 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1496 u32 stp_state;
1497
1498 switch (state) {
1499 case BR_STATE_DISABLED:
1500 stp_state = QCA8K_PORT_LOOKUP_STATE_DISABLED;
1501 break;
1502 case BR_STATE_BLOCKING:
1503 stp_state = QCA8K_PORT_LOOKUP_STATE_BLOCKING;
1504 break;
1505 case BR_STATE_LISTENING:
1506 stp_state = QCA8K_PORT_LOOKUP_STATE_LISTENING;
1507 break;
1508 case BR_STATE_LEARNING:
1509 stp_state = QCA8K_PORT_LOOKUP_STATE_LEARNING;
1510 break;
1511 case BR_STATE_FORWARDING:
1512 default:
1513 stp_state = QCA8K_PORT_LOOKUP_STATE_FORWARD;
1514 break;
1515 }
1516
1517 qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1518 QCA8K_PORT_LOOKUP_STATE_MASK, stp_state);
1519}
1520
1521static int
1522qca8k_port_bridge_join(struct dsa_switch *ds, int port, struct net_device *br)
1523{
1524 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1525 int port_mask = BIT(QCA8K_CPU_PORT);
1526 int i, ret;
1527
1528 for (i = 1; i < QCA8K_NUM_PORTS; i++) {
1529 if (dsa_to_port(ds, i)->bridge_dev != br)
1530 continue;
1531
1532
1533
1534 ret = qca8k_reg_set(priv,
1535 QCA8K_PORT_LOOKUP_CTRL(i),
1536 BIT(port));
1537 if (ret)
1538 return ret;
1539 if (i != port)
1540 port_mask |= BIT(i);
1541 }
1542
1543
1544 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1545 QCA8K_PORT_LOOKUP_MEMBER, port_mask);
1546
1547 return ret;
1548}
1549
1550static void
1551qca8k_port_bridge_leave(struct dsa_switch *ds, int port, struct net_device *br)
1552{
1553 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1554 int i;
1555
1556 for (i = 1; i < QCA8K_NUM_PORTS; i++) {
1557 if (dsa_to_port(ds, i)->bridge_dev != br)
1558 continue;
1559
1560
1561
1562 qca8k_reg_clear(priv,
1563 QCA8K_PORT_LOOKUP_CTRL(i),
1564 BIT(port));
1565 }
1566
1567
1568
1569
1570 qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1571 QCA8K_PORT_LOOKUP_MEMBER, BIT(QCA8K_CPU_PORT));
1572}
1573
1574static int
1575qca8k_port_enable(struct dsa_switch *ds, int port,
1576 struct phy_device *phy)
1577{
1578 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1579
1580 qca8k_port_set_status(priv, port, 1);
1581 priv->port_sts[port].enabled = 1;
1582
1583 if (dsa_is_user_port(ds, port))
1584 phy_support_asym_pause(phy);
1585
1586 return 0;
1587}
1588
1589static void
1590qca8k_port_disable(struct dsa_switch *ds, int port)
1591{
1592 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1593
1594 qca8k_port_set_status(priv, port, 0);
1595 priv->port_sts[port].enabled = 0;
1596}
1597
1598static int
1599qca8k_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
1600{
1601 struct qca8k_priv *priv = ds->priv;
1602 int i, mtu = 0;
1603
1604 priv->port_mtu[port] = new_mtu;
1605
1606 for (i = 0; i < QCA8K_NUM_PORTS; i++)
1607 if (priv->port_mtu[i] > mtu)
1608 mtu = priv->port_mtu[i];
1609
1610
1611 return qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, mtu + ETH_HLEN + ETH_FCS_LEN);
1612}
1613
1614static int
1615qca8k_port_max_mtu(struct dsa_switch *ds, int port)
1616{
1617 return QCA8K_MAX_MTU;
1618}
1619
1620static int
1621qca8k_port_fdb_insert(struct qca8k_priv *priv, const u8 *addr,
1622 u16 port_mask, u16 vid)
1623{
1624
1625 if (!vid)
1626 vid = QCA8K_PORT_VID_DEF;
1627
1628 return qca8k_fdb_add(priv, addr, port_mask, vid,
1629 QCA8K_ATU_STATUS_STATIC);
1630}
1631
1632static int
1633qca8k_port_fdb_add(struct dsa_switch *ds, int port,
1634 const unsigned char *addr, u16 vid)
1635{
1636 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1637 u16 port_mask = BIT(port);
1638
1639 return qca8k_port_fdb_insert(priv, addr, port_mask, vid);
1640}
1641
1642static int
1643qca8k_port_fdb_del(struct dsa_switch *ds, int port,
1644 const unsigned char *addr, u16 vid)
1645{
1646 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1647 u16 port_mask = BIT(port);
1648
1649 if (!vid)
1650 vid = QCA8K_PORT_VID_DEF;
1651
1652 return qca8k_fdb_del(priv, addr, port_mask, vid);
1653}
1654
1655static int
1656qca8k_port_fdb_dump(struct dsa_switch *ds, int port,
1657 dsa_fdb_dump_cb_t *cb, void *data)
1658{
1659 struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
1660 struct qca8k_fdb _fdb = { 0 };
1661 int cnt = QCA8K_NUM_FDB_RECORDS;
1662 bool is_static;
1663 int ret = 0;
1664
1665 mutex_lock(&priv->reg_mutex);
1666 while (cnt-- && !qca8k_fdb_next(priv, &_fdb, port)) {
1667 if (!_fdb.aging)
1668 break;
1669 is_static = (_fdb.aging == QCA8K_ATU_STATUS_STATIC);
1670 ret = cb(_fdb.mac, _fdb.vid, is_static, data);
1671 if (ret)
1672 break;
1673 }
1674 mutex_unlock(&priv->reg_mutex);
1675
1676 return 0;
1677}
1678
1679static int
1680qca8k_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1681 struct netlink_ext_ack *extack)
1682{
1683 struct qca8k_priv *priv = ds->priv;
1684 int ret;
1685
1686 if (vlan_filtering) {
1687 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1688 QCA8K_PORT_LOOKUP_VLAN_MODE,
1689 QCA8K_PORT_LOOKUP_VLAN_MODE_SECURE);
1690 } else {
1691 ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
1692 QCA8K_PORT_LOOKUP_VLAN_MODE,
1693 QCA8K_PORT_LOOKUP_VLAN_MODE_NONE);
1694 }
1695
1696 return ret;
1697}
1698
1699static int
1700qca8k_port_vlan_add(struct dsa_switch *ds, int port,
1701 const struct switchdev_obj_port_vlan *vlan,
1702 struct netlink_ext_ack *extack)
1703{
1704 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1705 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1706 struct qca8k_priv *priv = ds->priv;
1707 int ret;
1708
1709 ret = qca8k_vlan_add(priv, port, vlan->vid, untagged);
1710 if (ret) {
1711 dev_err(priv->dev, "Failed to add VLAN to port %d (%d)", port, ret);
1712 return ret;
1713 }
1714
1715 if (pvid) {
1716 int shift = 16 * (port % 2);
1717
1718 ret = qca8k_rmw(priv, QCA8K_EGRESS_VLAN(port),
1719 0xfff << shift, vlan->vid << shift);
1720 if (ret)
1721 return ret;
1722
1723 ret = qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(port),
1724 QCA8K_PORT_VLAN_CVID(vlan->vid) |
1725 QCA8K_PORT_VLAN_SVID(vlan->vid));
1726 }
1727
1728 return ret;
1729}
1730
1731static int
1732qca8k_port_vlan_del(struct dsa_switch *ds, int port,
1733 const struct switchdev_obj_port_vlan *vlan)
1734{
1735 struct qca8k_priv *priv = ds->priv;
1736 int ret;
1737
1738 ret = qca8k_vlan_del(priv, port, vlan->vid);
1739 if (ret)
1740 dev_err(priv->dev, "Failed to delete VLAN from port %d (%d)", port, ret);
1741
1742 return ret;
1743}
1744
1745static u32 qca8k_get_phy_flags(struct dsa_switch *ds, int port)
1746{
1747 struct qca8k_priv *priv = ds->priv;
1748
1749
1750
1751
1752
1753
1754
1755 if (port > 0 && port < 6)
1756 return priv->switch_revision;
1757
1758 return 0;
1759}
1760
1761static enum dsa_tag_protocol
1762qca8k_get_tag_protocol(struct dsa_switch *ds, int port,
1763 enum dsa_tag_protocol mp)
1764{
1765 return DSA_TAG_PROTO_QCA;
1766}
1767
1768static const struct dsa_switch_ops qca8k_switch_ops = {
1769 .get_tag_protocol = qca8k_get_tag_protocol,
1770 .setup = qca8k_setup,
1771 .get_strings = qca8k_get_strings,
1772 .get_ethtool_stats = qca8k_get_ethtool_stats,
1773 .get_sset_count = qca8k_get_sset_count,
1774 .get_mac_eee = qca8k_get_mac_eee,
1775 .set_mac_eee = qca8k_set_mac_eee,
1776 .port_enable = qca8k_port_enable,
1777 .port_disable = qca8k_port_disable,
1778 .port_change_mtu = qca8k_port_change_mtu,
1779 .port_max_mtu = qca8k_port_max_mtu,
1780 .port_stp_state_set = qca8k_port_stp_state_set,
1781 .port_bridge_join = qca8k_port_bridge_join,
1782 .port_bridge_leave = qca8k_port_bridge_leave,
1783 .port_fdb_add = qca8k_port_fdb_add,
1784 .port_fdb_del = qca8k_port_fdb_del,
1785 .port_fdb_dump = qca8k_port_fdb_dump,
1786 .port_vlan_filtering = qca8k_port_vlan_filtering,
1787 .port_vlan_add = qca8k_port_vlan_add,
1788 .port_vlan_del = qca8k_port_vlan_del,
1789 .phylink_validate = qca8k_phylink_validate,
1790 .phylink_mac_link_state = qca8k_phylink_mac_link_state,
1791 .phylink_mac_config = qca8k_phylink_mac_config,
1792 .phylink_mac_link_down = qca8k_phylink_mac_link_down,
1793 .phylink_mac_link_up = qca8k_phylink_mac_link_up,
1794 .get_phy_flags = qca8k_get_phy_flags,
1795};
1796
1797static int qca8k_read_switch_id(struct qca8k_priv *priv)
1798{
1799 const struct qca8k_match_data *data;
1800 u32 val;
1801 u8 id;
1802 int ret;
1803
1804
1805 data = of_device_get_match_data(priv->dev);
1806 if (!data)
1807 return -ENODEV;
1808
1809 ret = qca8k_read(priv, QCA8K_REG_MASK_CTRL, &val);
1810 if (ret < 0)
1811 return -ENODEV;
1812
1813 id = QCA8K_MASK_CTRL_DEVICE_ID(val & QCA8K_MASK_CTRL_DEVICE_ID_MASK);
1814 if (id != data->id) {
1815 dev_err(priv->dev, "Switch id detected %x but expected %x", id, data->id);
1816 return -ENODEV;
1817 }
1818
1819 priv->switch_id = id;
1820
1821
1822 priv->switch_revision = (val & QCA8K_MASK_CTRL_REV_ID_MASK);
1823
1824 return 0;
1825}
1826
1827static int
1828qca8k_sw_probe(struct mdio_device *mdiodev)
1829{
1830 struct qca8k_priv *priv;
1831 int ret;
1832
1833
1834
1835
1836 priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL);
1837 if (!priv)
1838 return -ENOMEM;
1839
1840 priv->bus = mdiodev->bus;
1841 priv->dev = &mdiodev->dev;
1842
1843 priv->reset_gpio = devm_gpiod_get_optional(priv->dev, "reset",
1844 GPIOD_ASIS);
1845 if (IS_ERR(priv->reset_gpio))
1846 return PTR_ERR(priv->reset_gpio);
1847
1848 if (priv->reset_gpio) {
1849 gpiod_set_value_cansleep(priv->reset_gpio, 1);
1850
1851
1852
1853 msleep(20);
1854 gpiod_set_value_cansleep(priv->reset_gpio, 0);
1855 }
1856
1857
1858 ret = qca8k_read_switch_id(priv);
1859 if (ret)
1860 return ret;
1861
1862 priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL);
1863 if (!priv->ds)
1864 return -ENOMEM;
1865
1866 priv->ds->dev = &mdiodev->dev;
1867 priv->ds->num_ports = QCA8K_NUM_PORTS;
1868 priv->ds->priv = priv;
1869 priv->ops = qca8k_switch_ops;
1870 priv->ds->ops = &priv->ops;
1871 mutex_init(&priv->reg_mutex);
1872 dev_set_drvdata(&mdiodev->dev, priv);
1873
1874 return dsa_register_switch(priv->ds);
1875}
1876
1877static void
1878qca8k_sw_remove(struct mdio_device *mdiodev)
1879{
1880 struct qca8k_priv *priv = dev_get_drvdata(&mdiodev->dev);
1881 int i;
1882
1883 if (!priv)
1884 return;
1885
1886 for (i = 0; i < QCA8K_NUM_PORTS; i++)
1887 qca8k_port_set_status(priv, i, 0);
1888
1889 dsa_unregister_switch(priv->ds);
1890
1891 dev_set_drvdata(&mdiodev->dev, NULL);
1892}
1893
1894static void qca8k_sw_shutdown(struct mdio_device *mdiodev)
1895{
1896 struct qca8k_priv *priv = dev_get_drvdata(&mdiodev->dev);
1897
1898 if (!priv)
1899 return;
1900
1901 dsa_switch_shutdown(priv->ds);
1902
1903 dev_set_drvdata(&mdiodev->dev, NULL);
1904}
1905
1906#ifdef CONFIG_PM_SLEEP
1907static void
1908qca8k_set_pm(struct qca8k_priv *priv, int enable)
1909{
1910 int i;
1911
1912 for (i = 0; i < QCA8K_NUM_PORTS; i++) {
1913 if (!priv->port_sts[i].enabled)
1914 continue;
1915
1916 qca8k_port_set_status(priv, i, enable);
1917 }
1918}
1919
1920static int qca8k_suspend(struct device *dev)
1921{
1922 struct qca8k_priv *priv = dev_get_drvdata(dev);
1923
1924 qca8k_set_pm(priv, 0);
1925
1926 return dsa_switch_suspend(priv->ds);
1927}
1928
1929static int qca8k_resume(struct device *dev)
1930{
1931 struct qca8k_priv *priv = dev_get_drvdata(dev);
1932
1933 qca8k_set_pm(priv, 1);
1934
1935 return dsa_switch_resume(priv->ds);
1936}
1937#endif
1938
1939static SIMPLE_DEV_PM_OPS(qca8k_pm_ops,
1940 qca8k_suspend, qca8k_resume);
1941
1942static const struct qca8k_match_data qca832x = {
1943 .id = QCA8K_ID_QCA8327,
1944};
1945
1946static const struct qca8k_match_data qca833x = {
1947 .id = QCA8K_ID_QCA8337,
1948};
1949
1950static const struct of_device_id qca8k_of_match[] = {
1951 { .compatible = "qca,qca8327", .data = &qca832x },
1952 { .compatible = "qca,qca8334", .data = &qca833x },
1953 { .compatible = "qca,qca8337", .data = &qca833x },
1954 { },
1955};
1956
1957static struct mdio_driver qca8kmdio_driver = {
1958 .probe = qca8k_sw_probe,
1959 .remove = qca8k_sw_remove,
1960 .shutdown = qca8k_sw_shutdown,
1961 .mdiodrv.driver = {
1962 .name = "qca8k",
1963 .of_match_table = qca8k_of_match,
1964 .pm = &qca8k_pm_ops,
1965 },
1966};
1967
1968mdio_module_driver(qca8kmdio_driver);
1969
1970MODULE_AUTHOR("Mathieu Olivari, John Crispin <john@phrozen.org>");
1971MODULE_DESCRIPTION("Driver for QCA8K ethernet switch family");
1972MODULE_LICENSE("GPL v2");
1973MODULE_ALIAS("platform:qca8k");
1974