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ar71xx: setup wdt_clock for AR913X to avoid a kernel bug
[openwrt.git] / target / linux / generic / files / drivers / net / phy / rtl8306.c
1 /*
2 * rtl8306.c: RTL8306S switch driver
3 *
4 * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16 #include <linux/if.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/list.h>
20 #include <linux/if_ether.h>
21 #include <linux/skbuff.h>
22 #include <linux/netdevice.h>
23 #include <linux/netlink.h>
24 #include <net/genetlink.h>
25 #include <linux/switch.h>
26 #include <linux/delay.h>
27 #include <linux/phy.h>
28
29 //#define DEBUG 1
30
31 /* Global (PHY0) */
32 #define RTL8306_REG_PAGE 16
33 #define RTL8306_REG_PAGE_LO (1 << 15)
34 #define RTL8306_REG_PAGE_HI (1 << 1) /* inverted */
35
36 #define RTL8306_NUM_VLANS 16
37 #define RTL8306_NUM_PORTS 6
38 #define RTL8306_PORT_CPU 5
39 #define RTL8306_NUM_PAGES 4
40 #define RTL8306_NUM_REGS 32
41
42 #define RTL_NAME_S "RTL8306S"
43 #define RTL_NAME_SD "RTL8306SD"
44 #define RTL_NAME_SDM "RTL8306SDM"
45 #define RTL_NAME_UNKNOWN "RTL8306(unknown)"
46
47 #define RTL8306_MAGIC 0x8306
48
49 static LIST_HEAD(phydevs);
50
51 struct rtl_priv {
52 struct list_head list;
53 struct switch_dev dev;
54 int page;
55 int type;
56 int do_cpu;
57 struct mii_bus *bus;
58 char hwname[sizeof(RTL_NAME_UNKNOWN)];
59 bool fixup;
60 };
61
62 struct rtl_phyregs {
63 int nway;
64 int speed;
65 int duplex;
66 };
67
68 #define to_rtl(_dev) container_of(_dev, struct rtl_priv, dev)
69
70 enum {
71 RTL_TYPE_S,
72 RTL_TYPE_SD,
73 RTL_TYPE_SDM,
74 };
75
76 struct rtl_reg {
77 int page;
78 int phy;
79 int reg;
80 int bits;
81 int shift;
82 int inverted;
83 };
84
85 #define RTL_VLAN_REGOFS(name) \
86 (RTL_REG_VLAN1_##name - RTL_REG_VLAN0_##name)
87
88 #define RTL_PORT_REGOFS(name) \
89 (RTL_REG_PORT1_##name - RTL_REG_PORT0_##name)
90
91 #define RTL_PORT_REG(id, reg) \
92 (RTL_REG_PORT0_##reg + (id * RTL_PORT_REGOFS(reg)))
93
94 #define RTL_VLAN_REG(id, reg) \
95 (RTL_REG_VLAN0_##reg + (id * RTL_VLAN_REGOFS(reg)))
96
97 #define RTL_GLOBAL_REGATTR(reg) \
98 .id = RTL_REG_##reg, \
99 .type = SWITCH_TYPE_INT, \
100 .ofs = 0, \
101 .set = rtl_attr_set_int, \
102 .get = rtl_attr_get_int
103
104 #define RTL_PORT_REGATTR(reg) \
105 .id = RTL_REG_PORT0_##reg, \
106 .type = SWITCH_TYPE_INT, \
107 .ofs = RTL_PORT_REGOFS(reg), \
108 .set = rtl_attr_set_port_int, \
109 .get = rtl_attr_get_port_int
110
111 #define RTL_VLAN_REGATTR(reg) \
112 .id = RTL_REG_VLAN0_##reg, \
113 .type = SWITCH_TYPE_INT, \
114 .ofs = RTL_VLAN_REGOFS(reg), \
115 .set = rtl_attr_set_vlan_int, \
116 .get = rtl_attr_get_vlan_int
117
118 enum rtl_regidx {
119 RTL_REG_CHIPID,
120 RTL_REG_CHIPVER,
121 RTL_REG_CHIPTYPE,
122 RTL_REG_CPUPORT,
123
124 RTL_REG_EN_CPUPORT,
125 RTL_REG_EN_TAG_OUT,
126 RTL_REG_EN_TAG_CLR,
127 RTL_REG_EN_TAG_IN,
128 RTL_REG_TRAP_CPU,
129 RTL_REG_TRUNK_PORTSEL,
130 RTL_REG_EN_TRUNK,
131 RTL_REG_RESET,
132
133 RTL_REG_VLAN_ENABLE,
134 RTL_REG_VLAN_FILTER,
135 RTL_REG_VLAN_TAG_ONLY,
136 RTL_REG_VLAN_TAG_AWARE,
137 #define RTL_VLAN_ENUM(id) \
138 RTL_REG_VLAN##id##_VID, \
139 RTL_REG_VLAN##id##_PORTMASK
140 RTL_VLAN_ENUM(0),
141 RTL_VLAN_ENUM(1),
142 RTL_VLAN_ENUM(2),
143 RTL_VLAN_ENUM(3),
144 RTL_VLAN_ENUM(4),
145 RTL_VLAN_ENUM(5),
146 RTL_VLAN_ENUM(6),
147 RTL_VLAN_ENUM(7),
148 RTL_VLAN_ENUM(8),
149 RTL_VLAN_ENUM(9),
150 RTL_VLAN_ENUM(10),
151 RTL_VLAN_ENUM(11),
152 RTL_VLAN_ENUM(12),
153 RTL_VLAN_ENUM(13),
154 RTL_VLAN_ENUM(14),
155 RTL_VLAN_ENUM(15),
156 #define RTL_PORT_ENUM(id) \
157 RTL_REG_PORT##id##_PVID, \
158 RTL_REG_PORT##id##_NULL_VID_REPLACE, \
159 RTL_REG_PORT##id##_NON_PVID_DISCARD, \
160 RTL_REG_PORT##id##_VID_INSERT, \
161 RTL_REG_PORT##id##_TAG_INSERT, \
162 RTL_REG_PORT##id##_LINK, \
163 RTL_REG_PORT##id##_SPEED, \
164 RTL_REG_PORT##id##_NWAY, \
165 RTL_REG_PORT##id##_NRESTART, \
166 RTL_REG_PORT##id##_DUPLEX, \
167 RTL_REG_PORT##id##_RXEN, \
168 RTL_REG_PORT##id##_TXEN
169 RTL_PORT_ENUM(0),
170 RTL_PORT_ENUM(1),
171 RTL_PORT_ENUM(2),
172 RTL_PORT_ENUM(3),
173 RTL_PORT_ENUM(4),
174 RTL_PORT_ENUM(5),
175 };
176
177 static const struct rtl_reg rtl_regs[] = {
178 [RTL_REG_CHIPID] = { 0, 4, 30, 16, 0, 0 },
179 [RTL_REG_CHIPVER] = { 0, 4, 31, 8, 0, 0 },
180 [RTL_REG_CHIPTYPE] = { 0, 4, 31, 2, 8, 0 },
181
182 /* CPU port number */
183 [RTL_REG_CPUPORT] = { 2, 4, 21, 3, 0, 0 },
184 /* Enable CPU port function */
185 [RTL_REG_EN_CPUPORT] = { 3, 2, 21, 1, 15, 1 },
186 /* Enable CPU port tag insertion */
187 [RTL_REG_EN_TAG_OUT] = { 3, 2, 21, 1, 12, 0 },
188 /* Enable CPU port tag removal */
189 [RTL_REG_EN_TAG_CLR] = { 3, 2, 21, 1, 11, 0 },
190 /* Enable CPU port tag checking */
191 [RTL_REG_EN_TAG_IN] = { 0, 4, 21, 1, 7, 0 },
192 [RTL_REG_EN_TRUNK] = { 0, 0, 19, 1, 11, 1 },
193 [RTL_REG_TRUNK_PORTSEL] = { 0, 0, 16, 1, 6, 1 },
194 [RTL_REG_RESET] = { 0, 0, 16, 1, 12, 0 },
195
196 [RTL_REG_TRAP_CPU] = { 3, 2, 22, 1, 6, 0 },
197
198 [RTL_REG_VLAN_TAG_ONLY] = { 0, 0, 16, 1, 8, 1 },
199 [RTL_REG_VLAN_FILTER] = { 0, 0, 16, 1, 9, 1 },
200 [RTL_REG_VLAN_TAG_AWARE] = { 0, 0, 16, 1, 10, 1 },
201 [RTL_REG_VLAN_ENABLE] = { 0, 0, 18, 1, 8, 1 },
202
203 #define RTL_VLAN_REGS(id, phy, page, regofs) \
204 [RTL_REG_VLAN##id##_VID] = { page, phy, 25 + regofs, 12, 0, 0 }, \
205 [RTL_REG_VLAN##id##_PORTMASK] = { page, phy, 24 + regofs, 6, 0, 0 }
206 RTL_VLAN_REGS( 0, 0, 0, 0),
207 RTL_VLAN_REGS( 1, 1, 0, 0),
208 RTL_VLAN_REGS( 2, 2, 0, 0),
209 RTL_VLAN_REGS( 3, 3, 0, 0),
210 RTL_VLAN_REGS( 4, 4, 0, 0),
211 RTL_VLAN_REGS( 5, 0, 1, 2),
212 RTL_VLAN_REGS( 6, 1, 1, 2),
213 RTL_VLAN_REGS( 7, 2, 1, 2),
214 RTL_VLAN_REGS( 8, 3, 1, 2),
215 RTL_VLAN_REGS( 9, 4, 1, 2),
216 RTL_VLAN_REGS(10, 0, 1, 4),
217 RTL_VLAN_REGS(11, 1, 1, 4),
218 RTL_VLAN_REGS(12, 2, 1, 4),
219 RTL_VLAN_REGS(13, 3, 1, 4),
220 RTL_VLAN_REGS(14, 4, 1, 4),
221 RTL_VLAN_REGS(15, 0, 1, 6),
222
223 #define REG_PORT_SETTING(port, phy) \
224 [RTL_REG_PORT##port##_SPEED] = { 0, phy, 0, 1, 13, 0 }, \
225 [RTL_REG_PORT##port##_NWAY] = { 0, phy, 0, 1, 12, 0 }, \
226 [RTL_REG_PORT##port##_NRESTART] = { 0, phy, 0, 1, 9, 0 }, \
227 [RTL_REG_PORT##port##_DUPLEX] = { 0, phy, 0, 1, 8, 0 }, \
228 [RTL_REG_PORT##port##_TXEN] = { 0, phy, 24, 1, 11, 0 }, \
229 [RTL_REG_PORT##port##_RXEN] = { 0, phy, 24, 1, 10, 0 }, \
230 [RTL_REG_PORT##port##_LINK] = { 0, phy, 1, 1, 2, 0 }, \
231 [RTL_REG_PORT##port##_NULL_VID_REPLACE] = { 0, phy, 22, 1, 12, 0 }, \
232 [RTL_REG_PORT##port##_NON_PVID_DISCARD] = { 0, phy, 22, 1, 11, 0 }, \
233 [RTL_REG_PORT##port##_VID_INSERT] = { 0, phy, 22, 2, 9, 0 }, \
234 [RTL_REG_PORT##port##_TAG_INSERT] = { 0, phy, 22, 2, 0, 0 }
235
236 REG_PORT_SETTING(0, 0),
237 REG_PORT_SETTING(1, 1),
238 REG_PORT_SETTING(2, 2),
239 REG_PORT_SETTING(3, 3),
240 REG_PORT_SETTING(4, 4),
241 REG_PORT_SETTING(5, 6),
242
243 #define REG_PORT_PVID(phy, page, regofs) \
244 { page, phy, 24 + regofs, 4, 12, 0 }
245 [RTL_REG_PORT0_PVID] = REG_PORT_PVID(0, 0, 0),
246 [RTL_REG_PORT1_PVID] = REG_PORT_PVID(1, 0, 0),
247 [RTL_REG_PORT2_PVID] = REG_PORT_PVID(2, 0, 0),
248 [RTL_REG_PORT3_PVID] = REG_PORT_PVID(3, 0, 0),
249 [RTL_REG_PORT4_PVID] = REG_PORT_PVID(4, 0, 0),
250 [RTL_REG_PORT5_PVID] = REG_PORT_PVID(0, 1, 2),
251 };
252
253
254 static inline void
255 rtl_set_page(struct rtl_priv *priv, unsigned int page)
256 {
257 struct mii_bus *bus = priv->bus;
258 u16 pgsel;
259
260 if (priv->fixup)
261 return;
262
263 if (priv->page == page)
264 return;
265
266 BUG_ON(page > RTL8306_NUM_PAGES);
267 pgsel = bus->read(bus, 0, RTL8306_REG_PAGE);
268 pgsel &= ~(RTL8306_REG_PAGE_LO | RTL8306_REG_PAGE_HI);
269 if (page & (1 << 0))
270 pgsel |= RTL8306_REG_PAGE_LO;
271 if (!(page & (1 << 1))) /* bit is inverted */
272 pgsel |= RTL8306_REG_PAGE_HI;
273 bus->write(bus, 0, RTL8306_REG_PAGE, pgsel);
274 }
275
276 static inline int
277 rtl_w16(struct switch_dev *dev, unsigned int page, unsigned int phy, unsigned int reg, u16 val)
278 {
279 struct rtl_priv *priv = to_rtl(dev);
280 struct mii_bus *bus = priv->bus;
281
282 rtl_set_page(priv, page);
283 bus->write(bus, phy, reg, val);
284 bus->read(bus, phy, reg); /* flush */
285 return 0;
286 }
287
288 static inline int
289 rtl_r16(struct switch_dev *dev, unsigned int page, unsigned int phy, unsigned int reg)
290 {
291 struct rtl_priv *priv = to_rtl(dev);
292 struct mii_bus *bus = priv->bus;
293
294 rtl_set_page(priv, page);
295 return bus->read(bus, phy, reg);
296 }
297
298 static inline u16
299 rtl_rmw(struct switch_dev *dev, unsigned int page, unsigned int phy, unsigned int reg, u16 mask, u16 val)
300 {
301 struct rtl_priv *priv = to_rtl(dev);
302 struct mii_bus *bus = priv->bus;
303 u16 r;
304
305 rtl_set_page(priv, page);
306 r = bus->read(bus, phy, reg);
307 r &= ~mask;
308 r |= val;
309 bus->write(bus, phy, reg, r);
310 return bus->read(bus, phy, reg); /* flush */
311 }
312
313
314 static inline int
315 rtl_get(struct switch_dev *dev, enum rtl_regidx s)
316 {
317 const struct rtl_reg *r = &rtl_regs[s];
318 u16 val;
319
320 BUG_ON(s >= ARRAY_SIZE(rtl_regs));
321 if (r->bits == 0) /* unimplemented */
322 return 0;
323
324 val = rtl_r16(dev, r->page, r->phy, r->reg);
325
326 if (r->shift > 0)
327 val >>= r->shift;
328
329 if (r->inverted)
330 val = ~val;
331
332 val &= (1 << r->bits) - 1;
333
334 return val;
335 }
336
337 static int
338 rtl_set(struct switch_dev *dev, enum rtl_regidx s, unsigned int val)
339 {
340 const struct rtl_reg *r = &rtl_regs[s];
341 u16 mask = 0xffff;
342
343 BUG_ON(s >= ARRAY_SIZE(rtl_regs));
344
345 if (r->bits == 0) /* unimplemented */
346 return 0;
347
348 if (r->shift > 0)
349 val <<= r->shift;
350
351 if (r->inverted)
352 val = ~val;
353
354 if (r->bits != 16) {
355 mask = (1 << r->bits) - 1;
356 mask <<= r->shift;
357 }
358 val &= mask;
359 return rtl_rmw(dev, r->page, r->phy, r->reg, mask, val);
360 }
361
362 static void
363 rtl_phy_save(struct switch_dev *dev, int port, struct rtl_phyregs *regs)
364 {
365 regs->nway = rtl_get(dev, RTL_PORT_REG(port, NWAY));
366 regs->speed = rtl_get(dev, RTL_PORT_REG(port, SPEED));
367 regs->duplex = rtl_get(dev, RTL_PORT_REG(port, DUPLEX));
368 }
369
370 static void
371 rtl_phy_restore(struct switch_dev *dev, int port, struct rtl_phyregs *regs)
372 {
373 rtl_set(dev, RTL_PORT_REG(port, NWAY), regs->nway);
374 rtl_set(dev, RTL_PORT_REG(port, SPEED), regs->speed);
375 rtl_set(dev, RTL_PORT_REG(port, DUPLEX), regs->duplex);
376 }
377
378 static void
379 rtl_port_set_enable(struct switch_dev *dev, int port, int enabled)
380 {
381 rtl_set(dev, RTL_PORT_REG(port, RXEN), enabled);
382 rtl_set(dev, RTL_PORT_REG(port, TXEN), enabled);
383
384 if ((port >= 5) || !enabled)
385 return;
386
387 /* restart autonegotiation if enabled */
388 rtl_set(dev, RTL_PORT_REG(port, NRESTART), 1);
389 }
390
391 static int
392 rtl_hw_apply(struct switch_dev *dev)
393 {
394 int i;
395 int trunk_en, trunk_psel;
396 struct rtl_phyregs port5;
397
398 rtl_phy_save(dev, 5, &port5);
399
400 /* disable rx/tx from PHYs */
401 for (i = 0; i < RTL8306_NUM_PORTS - 1; i++) {
402 rtl_port_set_enable(dev, i, 0);
403 }
404
405 /* save trunking status */
406 trunk_en = rtl_get(dev, RTL_REG_EN_TRUNK);
407 trunk_psel = rtl_get(dev, RTL_REG_TRUNK_PORTSEL);
408
409 /* trunk port 3 and 4
410 * XXX: Big WTF, but RealTek seems to do it */
411 rtl_set(dev, RTL_REG_EN_TRUNK, 1);
412 rtl_set(dev, RTL_REG_TRUNK_PORTSEL, 1);
413
414 /* execute the software reset */
415 rtl_set(dev, RTL_REG_RESET, 1);
416
417 /* wait for the reset to complete,
418 * but don't wait for too long */
419 for (i = 0; i < 10; i++) {
420 if (rtl_get(dev, RTL_REG_RESET) == 0)
421 break;
422
423 msleep(1);
424 }
425
426 /* enable rx/tx from PHYs */
427 for (i = 0; i < RTL8306_NUM_PORTS - 1; i++) {
428 rtl_port_set_enable(dev, i, 1);
429 }
430
431 /* restore trunking settings */
432 rtl_set(dev, RTL_REG_EN_TRUNK, trunk_en);
433 rtl_set(dev, RTL_REG_TRUNK_PORTSEL, trunk_psel);
434 rtl_phy_restore(dev, 5, &port5);
435
436 return 0;
437 }
438
439 static void
440 rtl_hw_init(struct switch_dev *dev)
441 {
442 struct rtl_priv *priv = to_rtl(dev);
443 int cpu_mask = 1 << dev->cpu_port;
444 int i;
445
446 rtl_set(dev, RTL_REG_VLAN_ENABLE, 0);
447 rtl_set(dev, RTL_REG_VLAN_FILTER, 0);
448 rtl_set(dev, RTL_REG_EN_TRUNK, 0);
449 rtl_set(dev, RTL_REG_TRUNK_PORTSEL, 0);
450
451 /* initialize cpu port settings */
452 if (priv->do_cpu) {
453 rtl_set(dev, RTL_REG_CPUPORT, dev->cpu_port);
454 rtl_set(dev, RTL_REG_EN_CPUPORT, 1);
455 } else {
456 rtl_set(dev, RTL_REG_CPUPORT, 7);
457 rtl_set(dev, RTL_REG_EN_CPUPORT, 0);
458 }
459 rtl_set(dev, RTL_REG_EN_TAG_OUT, 0);
460 rtl_set(dev, RTL_REG_EN_TAG_IN, 0);
461 rtl_set(dev, RTL_REG_EN_TAG_CLR, 0);
462
463 /* reset all vlans */
464 for (i = 0; i < RTL8306_NUM_VLANS; i++) {
465 rtl_set(dev, RTL_VLAN_REG(i, VID), i);
466 rtl_set(dev, RTL_VLAN_REG(i, PORTMASK), 0);
467 }
468
469 /* default to port isolation */
470 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
471 unsigned long mask;
472
473 if ((1 << i) == cpu_mask)
474 mask = ((1 << RTL8306_NUM_PORTS) - 1) & ~cpu_mask; /* all bits set */
475 else
476 mask = cpu_mask | (1 << i);
477
478 rtl_set(dev, RTL_VLAN_REG(i, PORTMASK), mask);
479 rtl_set(dev, RTL_PORT_REG(i, PVID), i);
480 rtl_set(dev, RTL_PORT_REG(i, NULL_VID_REPLACE), 1);
481 rtl_set(dev, RTL_PORT_REG(i, VID_INSERT), 1);
482 rtl_set(dev, RTL_PORT_REG(i, TAG_INSERT), 3);
483 }
484 rtl_hw_apply(dev);
485 }
486
487 #ifdef DEBUG
488 static int
489 rtl_set_use_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
490 {
491 struct rtl_priv *priv = to_rtl(dev);
492 priv->do_cpu = val->value.i;
493 rtl_hw_init(dev);
494 return 0;
495 }
496
497 static int
498 rtl_get_use_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
499 {
500 struct rtl_priv *priv = to_rtl(dev);
501 val->value.i = priv->do_cpu;
502 return 0;
503 }
504
505 static int
506 rtl_set_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
507 {
508 dev->cpu_port = val->value.i;
509 rtl_hw_init(dev);
510 return 0;
511 }
512
513 static int
514 rtl_get_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
515 {
516 val->value.i = dev->cpu_port;
517 return 0;
518 }
519 #endif
520
521 static int
522 rtl_reset(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
523 {
524 rtl_hw_init(dev);
525 return 0;
526 }
527
528 static int
529 rtl_attr_set_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
530 {
531 int idx = attr->id + (val->port_vlan * attr->ofs);
532 struct rtl_phyregs port;
533
534 if (attr->id >= ARRAY_SIZE(rtl_regs))
535 return -EINVAL;
536
537 if ((attr->max > 0) && (val->value.i > attr->max))
538 return -EINVAL;
539
540 /* access to phy register 22 on port 4/5
541 * needs phy status save/restore */
542 if ((val->port_vlan > 3) &&
543 (rtl_regs[idx].reg == 22) &&
544 (rtl_regs[idx].page == 0)) {
545
546 rtl_phy_save(dev, val->port_vlan, &port);
547 rtl_set(dev, idx, val->value.i);
548 rtl_phy_restore(dev, val->port_vlan, &port);
549 } else {
550 rtl_set(dev, idx, val->value.i);
551 }
552
553 return 0;
554 }
555
556 static int
557 rtl_attr_get_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
558 {
559 int idx = attr->id + (val->port_vlan * attr->ofs);
560
561 if (idx >= ARRAY_SIZE(rtl_regs))
562 return -EINVAL;
563
564 val->value.i = rtl_get(dev, idx);
565 return 0;
566 }
567
568 static int
569 rtl_attr_set_port_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
570 {
571 if (val->port_vlan >= RTL8306_NUM_PORTS)
572 return -EINVAL;
573
574 return rtl_attr_set_int(dev, attr, val);
575 }
576
577 static int
578 rtl_attr_get_port_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
579 {
580 if (val->port_vlan >= RTL8306_NUM_PORTS)
581 return -EINVAL;
582 return rtl_attr_get_int(dev, attr, val);
583 }
584
585 static int
586 rtl_attr_set_vlan_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
587 {
588 if (val->port_vlan >= dev->vlans)
589 return -EINVAL;
590
591 return rtl_attr_set_int(dev, attr, val);
592 }
593
594 static int
595 rtl_attr_get_vlan_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
596 {
597 if (val->port_vlan >= dev->vlans)
598 return -EINVAL;
599
600 return rtl_attr_get_int(dev, attr, val);
601 }
602
603 static int
604 rtl_get_ports(struct switch_dev *dev, struct switch_val *val)
605 {
606 unsigned int i, mask;
607
608 mask = rtl_get(dev, RTL_VLAN_REG(val->port_vlan, PORTMASK));
609 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
610 struct switch_port *port;
611
612 if (!(mask & (1 << i)))
613 continue;
614
615 port = &val->value.ports[val->len];
616 port->id = i;
617 port->flags = 0;
618 val->len++;
619 }
620
621 return 0;
622 }
623
624 static int
625 rtl_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
626 {
627 struct rtl_priv *priv = to_rtl(dev);
628 struct rtl_phyregs port;
629 int en = val->value.i;
630 int i;
631
632 rtl_set(dev, RTL_REG_EN_TAG_OUT, en && priv->do_cpu);
633 rtl_set(dev, RTL_REG_EN_TAG_IN, en && priv->do_cpu);
634 rtl_set(dev, RTL_REG_EN_TAG_CLR, en && priv->do_cpu);
635 rtl_set(dev, RTL_REG_VLAN_TAG_AWARE, en);
636 if (en)
637 rtl_set(dev, RTL_REG_VLAN_FILTER, en);
638
639 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
640 if (i > 3)
641 rtl_phy_save(dev, val->port_vlan, &port);
642 rtl_set(dev, RTL_PORT_REG(i, NULL_VID_REPLACE), 1);
643 rtl_set(dev, RTL_PORT_REG(i, VID_INSERT), (en ? (i == dev->cpu_port ? 0 : 1) : 1));
644 rtl_set(dev, RTL_PORT_REG(i, TAG_INSERT), (en ? (i == dev->cpu_port ? 2 : 1) : 3));
645 if (i > 3)
646 rtl_phy_restore(dev, val->port_vlan, &port);
647 }
648 rtl_set(dev, RTL_REG_VLAN_ENABLE, en);
649
650 return 0;
651 }
652
653 static int
654 rtl_get_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
655 {
656 return rtl_get(dev, RTL_REG_VLAN_ENABLE);
657 }
658
659 static int
660 rtl_set_ports(struct switch_dev *dev, struct switch_val *val)
661 {
662 unsigned int mask = 0;
663 unsigned int oldmask;
664 int i;
665
666 for(i = 0; i < val->len; i++)
667 {
668 struct switch_port *port = &val->value.ports[i];
669 bool tagged = false;
670
671 mask |= (1 << port->id);
672
673 if (port->id == dev->cpu_port)
674 continue;
675
676 if ((i == dev->cpu_port) ||
677 (port->flags & (1 << SWITCH_PORT_FLAG_TAGGED)))
678 tagged = true;
679
680 /* fix up PVIDs for added ports */
681 if (!tagged)
682 rtl_set(dev, RTL_PORT_REG(port->id, PVID), val->port_vlan);
683
684 rtl_set(dev, RTL_PORT_REG(port->id, NON_PVID_DISCARD), (tagged ? 0 : 1));
685 rtl_set(dev, RTL_PORT_REG(port->id, VID_INSERT), (tagged ? 0 : 1));
686 rtl_set(dev, RTL_PORT_REG(port->id, TAG_INSERT), (tagged ? 2 : 1));
687 }
688
689 oldmask = rtl_get(dev, RTL_VLAN_REG(val->port_vlan, PORTMASK));
690 rtl_set(dev, RTL_VLAN_REG(val->port_vlan, PORTMASK), mask);
691
692 /* fix up PVIDs for removed ports, default to last vlan */
693 oldmask &= ~mask;
694 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
695 if (!(oldmask & (1 << i)))
696 continue;
697
698 if (i == dev->cpu_port)
699 continue;
700
701 if (rtl_get(dev, RTL_PORT_REG(i, PVID)) == val->port_vlan)
702 rtl_set(dev, RTL_PORT_REG(i, PVID), dev->vlans - 1);
703 }
704
705 return 0;
706 }
707
708 static struct switch_attr rtl_globals[] = {
709 {
710 .type = SWITCH_TYPE_INT,
711 .name = "reset",
712 .description = "Reset the switch",
713 .set = rtl_reset,
714 },
715 {
716 .type = SWITCH_TYPE_INT,
717 .name = "enable_vlan",
718 .description = "Enable VLAN mode",
719 .max = 1,
720 .set = rtl_set_vlan,
721 .get = rtl_get_vlan,
722 },
723 {
724 RTL_GLOBAL_REGATTR(EN_TRUNK),
725 .name = "trunk",
726 .description = "Enable port trunking",
727 .max = 1,
728 },
729 {
730 RTL_GLOBAL_REGATTR(TRUNK_PORTSEL),
731 .name = "trunk_sel",
732 .description = "Select ports for trunking (0: 0,1 - 1: 3,4)",
733 .max = 1,
734 },
735 #ifdef DEBUG
736 {
737 RTL_GLOBAL_REGATTR(VLAN_FILTER),
738 .name = "vlan_filter",
739 .description = "Filter incoming packets for allowed VLANS",
740 .max = 1,
741 },
742 {
743 .type = SWITCH_TYPE_INT,
744 .name = "cpuport",
745 .description = "CPU Port",
746 .set = rtl_set_cpuport,
747 .get = rtl_get_cpuport,
748 .max = RTL8306_NUM_PORTS,
749 },
750 {
751 .type = SWITCH_TYPE_INT,
752 .name = "use_cpuport",
753 .description = "CPU Port handling flag",
754 .set = rtl_set_use_cpuport,
755 .get = rtl_get_use_cpuport,
756 .max = RTL8306_NUM_PORTS,
757 },
758 {
759 RTL_GLOBAL_REGATTR(TRAP_CPU),
760 .name = "trap_cpu",
761 .description = "VLAN trap to CPU",
762 .max = 1,
763 },
764 {
765 RTL_GLOBAL_REGATTR(VLAN_TAG_AWARE),
766 .name = "vlan_tag_aware",
767 .description = "Enable VLAN tag awareness",
768 .max = 1,
769 },
770 {
771 RTL_GLOBAL_REGATTR(VLAN_TAG_ONLY),
772 .name = "tag_only",
773 .description = "Only accept tagged packets",
774 .max = 1,
775 },
776 #endif
777 };
778 static struct switch_attr rtl_port[] = {
779 {
780 RTL_PORT_REGATTR(PVID),
781 .name = "pvid",
782 .description = "Port VLAN ID",
783 .max = RTL8306_NUM_VLANS - 1,
784 },
785 {
786 RTL_PORT_REGATTR(LINK),
787 .name = "link",
788 .description = "get the current link state",
789 .max = 1,
790 .set = NULL,
791 },
792 #ifdef DEBUG
793 {
794 RTL_PORT_REGATTR(NULL_VID_REPLACE),
795 .name = "null_vid",
796 .description = "NULL VID gets replaced by port default vid",
797 .max = 1,
798 },
799 {
800 RTL_PORT_REGATTR(NON_PVID_DISCARD),
801 .name = "non_pvid_discard",
802 .description = "discard packets with VID != PVID",
803 .max = 1,
804 },
805 {
806 RTL_PORT_REGATTR(VID_INSERT),
807 .name = "vid_insert_remove",
808 .description = "how should the switch insert and remove vids ?",
809 .max = 3,
810 },
811 {
812 RTL_PORT_REGATTR(TAG_INSERT),
813 .name = "tag_insert",
814 .description = "tag insertion handling",
815 .max = 3,
816 },
817 #endif
818 {
819 RTL_PORT_REGATTR(SPEED),
820 .name = "speed",
821 .description = "current link speed",
822 .max = 1,
823 },
824 {
825 RTL_PORT_REGATTR(NWAY),
826 .name = "nway",
827 .description = "enable autonegotiation",
828 .max = 1,
829 },
830 };
831
832 static struct switch_attr rtl_vlan[] = {
833 {
834 RTL_VLAN_REGATTR(VID),
835 .name = "vid",
836 .description = "VLAN ID (1-4095)",
837 .max = 4095,
838 },
839 };
840
841 static const struct switch_dev_ops rtl8306_ops = {
842 .attr_global = {
843 .attr = rtl_globals,
844 .n_attr = ARRAY_SIZE(rtl_globals),
845 },
846 .attr_port = {
847 .attr = rtl_port,
848 .n_attr = ARRAY_SIZE(rtl_port),
849 },
850 .attr_vlan = {
851 .attr = rtl_vlan,
852 .n_attr = ARRAY_SIZE(rtl_vlan),
853 },
854
855 .get_vlan_ports = rtl_get_ports,
856 .set_vlan_ports = rtl_set_ports,
857 .apply_config = rtl_hw_apply,
858 };
859
860 static int
861 rtl8306_config_init(struct phy_device *pdev)
862 {
863 struct net_device *netdev = pdev->attached_dev;
864 struct rtl_priv *priv = pdev->priv;
865 struct switch_dev *dev = &priv->dev;
866 struct switch_val val;
867 unsigned int chipid, chipver, chiptype;
868 int err;
869
870 /* Only init the switch for the primary PHY */
871 if (pdev->addr != 0)
872 return 0;
873
874 val.value.i = 1;
875 priv->dev.cpu_port = RTL8306_PORT_CPU;
876 priv->dev.ports = RTL8306_NUM_PORTS;
877 priv->dev.vlans = RTL8306_NUM_VLANS;
878 priv->dev.ops = &rtl8306_ops;
879 priv->do_cpu = 0;
880 priv->page = -1;
881 priv->bus = pdev->bus;
882
883 chipid = rtl_get(dev, RTL_REG_CHIPID);
884 chipver = rtl_get(dev, RTL_REG_CHIPVER);
885 chiptype = rtl_get(dev, RTL_REG_CHIPTYPE);
886 switch(chiptype) {
887 case 0:
888 case 2:
889 strncpy(priv->hwname, RTL_NAME_S, sizeof(priv->hwname));
890 priv->type = RTL_TYPE_S;
891 break;
892 case 1:
893 strncpy(priv->hwname, RTL_NAME_SD, sizeof(priv->hwname));
894 priv->type = RTL_TYPE_SD;
895 break;
896 case 3:
897 strncpy(priv->hwname, RTL_NAME_SDM, sizeof(priv->hwname));
898 priv->type = RTL_TYPE_SDM;
899 break;
900 default:
901 strncpy(priv->hwname, RTL_NAME_UNKNOWN, sizeof(priv->hwname));
902 break;
903 }
904
905 dev->name = priv->hwname;
906 rtl_hw_init(dev);
907
908 printk(KERN_INFO "Registering %s switch with Chip ID: 0x%04x, version: 0x%04x\n", priv->hwname, chipid, chipver);
909
910 err = register_switch(dev, netdev);
911 if (err < 0) {
912 kfree(priv);
913 return err;
914 }
915
916 return 0;
917 }
918
919
920 static int
921 rtl8306_fixup(struct phy_device *pdev)
922 {
923 struct rtl_priv priv;
924 u16 chipid;
925
926 /* Attach to primary LAN port and WAN port */
927 if (pdev->addr != 0 && pdev->addr != 4)
928 return 0;
929
930 memset(&priv, 0, sizeof(priv));
931 priv.fixup = true;
932 priv.page = -1;
933 priv.bus = pdev->bus;
934 chipid = rtl_get(&priv.dev, RTL_REG_CHIPID);
935 if (chipid == 0x5988)
936 pdev->phy_id = RTL8306_MAGIC;
937
938 return 0;
939 }
940
941 static int
942 rtl8306_probe(struct phy_device *pdev)
943 {
944 struct rtl_priv *priv;
945
946 list_for_each_entry(priv, &phydevs, list) {
947 /*
948 * share one rtl_priv instance between virtual phy
949 * devices on the same bus
950 */
951 if (priv->bus == pdev->bus)
952 goto found;
953 }
954 priv = kzalloc(sizeof(struct rtl_priv), GFP_KERNEL);
955 if (!priv)
956 return -ENOMEM;
957
958 priv->bus = pdev->bus;
959
960 found:
961 pdev->priv = priv;
962 return 0;
963 }
964
965 static void
966 rtl8306_remove(struct phy_device *pdev)
967 {
968 struct rtl_priv *priv = pdev->priv;
969 unregister_switch(&priv->dev);
970 kfree(priv);
971 }
972
973 static int
974 rtl8306_config_aneg(struct phy_device *pdev)
975 {
976 struct rtl_priv *priv = pdev->priv;
977
978 /* Only for WAN */
979 if (pdev->addr == 0)
980 return 0;
981
982 /* Restart autonegotiation */
983 rtl_set(&priv->dev, RTL_PORT_REG(4, NWAY), 1);
984 rtl_set(&priv->dev, RTL_PORT_REG(4, NRESTART), 1);
985
986 return 0;
987 }
988
989 static int
990 rtl8306_read_status(struct phy_device *pdev)
991 {
992 struct rtl_priv *priv = pdev->priv;
993 struct switch_dev *dev = &priv->dev;
994
995 if (pdev->addr == 4) {
996 /* WAN */
997 pdev->speed = rtl_get(dev, RTL_PORT_REG(4, SPEED)) ? SPEED_100 : SPEED_10;
998 pdev->duplex = rtl_get(dev, RTL_PORT_REG(4, DUPLEX)) ? DUPLEX_FULL : DUPLEX_HALF;
999 pdev->link = !!rtl_get(dev, RTL_PORT_REG(4, LINK));
1000 } else {
1001 /* LAN */
1002 pdev->speed = SPEED_100;
1003 pdev->duplex = DUPLEX_FULL;
1004 pdev->link = 1;
1005 }
1006
1007 /*
1008 * Bypass generic PHY status read,
1009 * it doesn't work with this switch
1010 */
1011 if (pdev->link) {
1012 pdev->state = PHY_RUNNING;
1013 netif_carrier_on(pdev->attached_dev);
1014 pdev->adjust_link(pdev->attached_dev);
1015 } else {
1016 pdev->state = PHY_NOLINK;
1017 netif_carrier_off(pdev->attached_dev);
1018 pdev->adjust_link(pdev->attached_dev);
1019 }
1020
1021 return 0;
1022 }
1023
1024
1025 static struct phy_driver rtl8306_driver = {
1026 .name = "Realtek RTL8306S",
1027 .flags = PHY_HAS_MAGICANEG,
1028 .phy_id = RTL8306_MAGIC,
1029 .phy_id_mask = 0xffffffff,
1030 .features = PHY_BASIC_FEATURES,
1031 .probe = &rtl8306_probe,
1032 .remove = &rtl8306_remove,
1033 .config_init = &rtl8306_config_init,
1034 .config_aneg = &rtl8306_config_aneg,
1035 .read_status = &rtl8306_read_status,
1036 .driver = { .owner = THIS_MODULE,},
1037 };
1038
1039
1040 static int __init
1041 rtl_init(void)
1042 {
1043 phy_register_fixup_for_id(PHY_ANY_ID, rtl8306_fixup);
1044 return phy_driver_register(&rtl8306_driver);
1045 }
1046
1047 static void __exit
1048 rtl_exit(void)
1049 {
1050 phy_driver_unregister(&rtl8306_driver);
1051 }
1052
1053 module_init(rtl_init);
1054 module_exit(rtl_exit);
1055 MODULE_LICENSE("GPL");
1056
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