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rename target/linux/generic-2.6 to generic
[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 };
60
61 struct rtl_phyregs {
62 int nway;
63 int speed;
64 int duplex;
65 };
66
67 #define to_rtl(_dev) container_of(_dev, struct rtl_priv, dev)
68
69 enum {
70 RTL_TYPE_S,
71 RTL_TYPE_SD,
72 RTL_TYPE_SDM,
73 };
74
75 struct rtl_reg {
76 int page;
77 int phy;
78 int reg;
79 int bits;
80 int shift;
81 int inverted;
82 };
83
84 #define RTL_VLAN_REGOFS(name) \
85 (RTL_REG_VLAN1_##name - RTL_REG_VLAN0_##name)
86
87 #define RTL_PORT_REGOFS(name) \
88 (RTL_REG_PORT1_##name - RTL_REG_PORT0_##name)
89
90 #define RTL_PORT_REG(id, reg) \
91 (RTL_REG_PORT0_##reg + (id * RTL_PORT_REGOFS(reg)))
92
93 #define RTL_VLAN_REG(id, reg) \
94 (RTL_REG_VLAN0_##reg + (id * RTL_VLAN_REGOFS(reg)))
95
96 #define RTL_GLOBAL_REGATTR(reg) \
97 .id = RTL_REG_##reg, \
98 .type = SWITCH_TYPE_INT, \
99 .ofs = 0, \
100 .set = rtl_attr_set_int, \
101 .get = rtl_attr_get_int
102
103 #define RTL_PORT_REGATTR(reg) \
104 .id = RTL_REG_PORT0_##reg, \
105 .type = SWITCH_TYPE_INT, \
106 .ofs = RTL_PORT_REGOFS(reg), \
107 .set = rtl_attr_set_port_int, \
108 .get = rtl_attr_get_port_int
109
110 #define RTL_VLAN_REGATTR(reg) \
111 .id = RTL_REG_VLAN0_##reg, \
112 .type = SWITCH_TYPE_INT, \
113 .ofs = RTL_VLAN_REGOFS(reg), \
114 .set = rtl_attr_set_vlan_int, \
115 .get = rtl_attr_get_vlan_int
116
117 enum rtl_regidx {
118 RTL_REG_CHIPID,
119 RTL_REG_CHIPVER,
120 RTL_REG_CHIPTYPE,
121 RTL_REG_CPUPORT,
122
123 RTL_REG_EN_CPUPORT,
124 RTL_REG_EN_TAG_OUT,
125 RTL_REG_EN_TAG_CLR,
126 RTL_REG_EN_TAG_IN,
127 RTL_REG_TRAP_CPU,
128 RTL_REG_TRUNK_PORTSEL,
129 RTL_REG_EN_TRUNK,
130 RTL_REG_RESET,
131
132 RTL_REG_VLAN_ENABLE,
133 RTL_REG_VLAN_FILTER,
134 RTL_REG_VLAN_TAG_ONLY,
135 RTL_REG_VLAN_TAG_AWARE,
136 #define RTL_VLAN_ENUM(id) \
137 RTL_REG_VLAN##id##_VID, \
138 RTL_REG_VLAN##id##_PORTMASK
139 RTL_VLAN_ENUM(0),
140 RTL_VLAN_ENUM(1),
141 RTL_VLAN_ENUM(2),
142 RTL_VLAN_ENUM(3),
143 RTL_VLAN_ENUM(4),
144 RTL_VLAN_ENUM(5),
145 RTL_VLAN_ENUM(6),
146 RTL_VLAN_ENUM(7),
147 RTL_VLAN_ENUM(8),
148 RTL_VLAN_ENUM(9),
149 RTL_VLAN_ENUM(10),
150 RTL_VLAN_ENUM(11),
151 RTL_VLAN_ENUM(12),
152 RTL_VLAN_ENUM(13),
153 RTL_VLAN_ENUM(14),
154 RTL_VLAN_ENUM(15),
155 #define RTL_PORT_ENUM(id) \
156 RTL_REG_PORT##id##_PVID, \
157 RTL_REG_PORT##id##_NULL_VID_REPLACE, \
158 RTL_REG_PORT##id##_NON_PVID_DISCARD, \
159 RTL_REG_PORT##id##_VID_INSERT, \
160 RTL_REG_PORT##id##_TAG_INSERT, \
161 RTL_REG_PORT##id##_LINK, \
162 RTL_REG_PORT##id##_SPEED, \
163 RTL_REG_PORT##id##_NWAY, \
164 RTL_REG_PORT##id##_NRESTART, \
165 RTL_REG_PORT##id##_DUPLEX, \
166 RTL_REG_PORT##id##_RXEN, \
167 RTL_REG_PORT##id##_TXEN
168 RTL_PORT_ENUM(0),
169 RTL_PORT_ENUM(1),
170 RTL_PORT_ENUM(2),
171 RTL_PORT_ENUM(3),
172 RTL_PORT_ENUM(4),
173 RTL_PORT_ENUM(5),
174 };
175
176 static const struct rtl_reg rtl_regs[] = {
177 [RTL_REG_CHIPID] = { 0, 4, 30, 16, 0, 0 },
178 [RTL_REG_CHIPVER] = { 0, 4, 31, 8, 0, 0 },
179 [RTL_REG_CHIPTYPE] = { 0, 4, 31, 2, 8, 0 },
180
181 /* CPU port number */
182 [RTL_REG_CPUPORT] = { 2, 4, 21, 3, 0, 0 },
183 /* Enable CPU port function */
184 [RTL_REG_EN_CPUPORT] = { 3, 2, 21, 1, 15, 1 },
185 /* Enable CPU port tag insertion */
186 [RTL_REG_EN_TAG_OUT] = { 3, 2, 21, 1, 12, 0 },
187 /* Enable CPU port tag removal */
188 [RTL_REG_EN_TAG_CLR] = { 3, 2, 21, 1, 11, 0 },
189 /* Enable CPU port tag checking */
190 [RTL_REG_EN_TAG_IN] = { 0, 4, 21, 1, 7, 0 },
191 [RTL_REG_EN_TRUNK] = { 0, 0, 19, 1, 11, 1 },
192 [RTL_REG_TRUNK_PORTSEL] = { 0, 0, 16, 1, 6, 1 },
193 [RTL_REG_RESET] = { 0, 0, 16, 1, 12, 0 },
194
195 [RTL_REG_TRAP_CPU] = { 3, 2, 22, 1, 6, 0 },
196
197 [RTL_REG_VLAN_TAG_ONLY] = { 0, 0, 16, 1, 8, 1 },
198 [RTL_REG_VLAN_FILTER] = { 0, 0, 16, 1, 9, 1 },
199 [RTL_REG_VLAN_TAG_AWARE] = { 0, 0, 16, 1, 10, 1 },
200 [RTL_REG_VLAN_ENABLE] = { 0, 0, 18, 1, 8, 1 },
201
202 #define RTL_VLAN_REGS(id, phy, page, regofs) \
203 [RTL_REG_VLAN##id##_VID] = { page, phy, 25 + regofs, 12, 0, 0 }, \
204 [RTL_REG_VLAN##id##_PORTMASK] = { page, phy, 24 + regofs, 6, 0, 0 }
205 RTL_VLAN_REGS( 0, 0, 0, 0),
206 RTL_VLAN_REGS( 1, 1, 0, 0),
207 RTL_VLAN_REGS( 2, 2, 0, 0),
208 RTL_VLAN_REGS( 3, 3, 0, 0),
209 RTL_VLAN_REGS( 4, 4, 0, 0),
210 RTL_VLAN_REGS( 5, 0, 1, 2),
211 RTL_VLAN_REGS( 6, 1, 1, 2),
212 RTL_VLAN_REGS( 7, 2, 1, 2),
213 RTL_VLAN_REGS( 8, 3, 1, 2),
214 RTL_VLAN_REGS( 9, 4, 1, 2),
215 RTL_VLAN_REGS(10, 0, 1, 4),
216 RTL_VLAN_REGS(11, 1, 1, 4),
217 RTL_VLAN_REGS(12, 2, 1, 4),
218 RTL_VLAN_REGS(13, 3, 1, 4),
219 RTL_VLAN_REGS(14, 4, 1, 4),
220 RTL_VLAN_REGS(15, 0, 1, 6),
221
222 #define REG_PORT_SETTING(port, phy) \
223 [RTL_REG_PORT##port##_SPEED] = { 0, phy, 0, 1, 13, 0 }, \
224 [RTL_REG_PORT##port##_NWAY] = { 0, phy, 0, 1, 12, 0 }, \
225 [RTL_REG_PORT##port##_NRESTART] = { 0, phy, 0, 1, 9, 0 }, \
226 [RTL_REG_PORT##port##_DUPLEX] = { 0, phy, 0, 1, 8, 0 }, \
227 [RTL_REG_PORT##port##_TXEN] = { 0, phy, 24, 1, 11, 0 }, \
228 [RTL_REG_PORT##port##_RXEN] = { 0, phy, 24, 1, 10, 0 }, \
229 [RTL_REG_PORT##port##_LINK] = { 0, phy, 1, 1, 2, 0 }, \
230 [RTL_REG_PORT##port##_NULL_VID_REPLACE] = { 0, phy, 22, 1, 12, 0 }, \
231 [RTL_REG_PORT##port##_NON_PVID_DISCARD] = { 0, phy, 22, 1, 11, 0 }, \
232 [RTL_REG_PORT##port##_VID_INSERT] = { 0, phy, 22, 2, 9, 0 }, \
233 [RTL_REG_PORT##port##_TAG_INSERT] = { 0, phy, 22, 2, 0, 0 }
234
235 REG_PORT_SETTING(0, 0),
236 REG_PORT_SETTING(1, 1),
237 REG_PORT_SETTING(2, 2),
238 REG_PORT_SETTING(3, 3),
239 REG_PORT_SETTING(4, 4),
240 REG_PORT_SETTING(5, 6),
241
242 #define REG_PORT_PVID(phy, page, regofs) \
243 { page, phy, 24 + regofs, 4, 12, 0 }
244 [RTL_REG_PORT0_PVID] = REG_PORT_PVID(0, 0, 0),
245 [RTL_REG_PORT1_PVID] = REG_PORT_PVID(1, 0, 0),
246 [RTL_REG_PORT2_PVID] = REG_PORT_PVID(2, 0, 0),
247 [RTL_REG_PORT3_PVID] = REG_PORT_PVID(3, 0, 0),
248 [RTL_REG_PORT4_PVID] = REG_PORT_PVID(4, 0, 0),
249 [RTL_REG_PORT5_PVID] = REG_PORT_PVID(0, 1, 2),
250 };
251
252
253 /* IFXMIPS compat stuff - remove after PHY layer migration */
254 static struct switch_dev rtldev;
255 /* END IFXMIPS compat stuff */
256
257
258 static inline void
259 rtl_set_page(struct rtl_priv *priv, unsigned int page)
260 {
261 struct mii_bus *bus = priv->bus;
262 u16 pgsel;
263
264 if (priv->page == page)
265 return;
266
267 BUG_ON(page > RTL8306_NUM_PAGES);
268 pgsel = bus->read(bus, 0, RTL8306_REG_PAGE);
269 pgsel &= ~(RTL8306_REG_PAGE_LO | RTL8306_REG_PAGE_HI);
270 if (page & (1 << 0))
271 pgsel |= RTL8306_REG_PAGE_LO;
272 if (!(page & (1 << 1))) /* bit is inverted */
273 pgsel |= RTL8306_REG_PAGE_HI;
274 bus->write(bus, 0, RTL8306_REG_PAGE, pgsel);
275 }
276
277 static inline int
278 rtl_w16(struct switch_dev *dev, unsigned int page, unsigned int phy, unsigned int reg, u16 val)
279 {
280 struct rtl_priv *priv = to_rtl(dev);
281 struct mii_bus *bus = priv->bus;
282
283 rtl_set_page(priv, page);
284 bus->write(bus, phy, reg, val);
285 bus->read(bus, phy, reg); /* flush */
286 return 0;
287 }
288
289 static inline int
290 rtl_r16(struct switch_dev *dev, unsigned int page, unsigned int phy, unsigned int reg)
291 {
292 struct rtl_priv *priv = to_rtl(dev);
293 struct mii_bus *bus = priv->bus;
294
295 rtl_set_page(priv, page);
296 return bus->read(bus, phy, reg);
297 }
298
299 static inline u16
300 rtl_rmw(struct switch_dev *dev, unsigned int page, unsigned int phy, unsigned int reg, u16 mask, u16 val)
301 {
302 struct rtl_priv *priv = to_rtl(dev);
303 struct mii_bus *bus = priv->bus;
304 u16 r;
305
306 rtl_set_page(priv, page);
307 r = bus->read(bus, phy, reg);
308 r &= ~mask;
309 r |= val;
310 bus->write(bus, phy, reg, r);
311 return bus->read(bus, phy, reg); /* flush */
312 }
313
314
315 static inline int
316 rtl_get(struct switch_dev *dev, enum rtl_regidx s)
317 {
318 const struct rtl_reg *r = &rtl_regs[s];
319 u16 val;
320
321 BUG_ON(s >= ARRAY_SIZE(rtl_regs));
322 if (r->bits == 0) /* unimplemented */
323 return 0;
324
325 val = rtl_r16(dev, r->page, r->phy, r->reg);
326
327 if (r->shift > 0)
328 val >>= r->shift;
329
330 if (r->inverted)
331 val = ~val;
332
333 val &= (1 << r->bits) - 1;
334
335 return val;
336 }
337
338 static int
339 rtl_set(struct switch_dev *dev, enum rtl_regidx s, unsigned int val)
340 {
341 const struct rtl_reg *r = &rtl_regs[s];
342 u16 mask = 0xffff;
343
344 BUG_ON(s >= ARRAY_SIZE(rtl_regs));
345
346 if (r->bits == 0) /* unimplemented */
347 return 0;
348
349 if (r->shift > 0)
350 val <<= r->shift;
351
352 if (r->inverted)
353 val = ~val;
354
355 if (r->bits != 16) {
356 mask = (1 << r->bits) - 1;
357 mask <<= r->shift;
358 }
359 val &= mask;
360 return rtl_rmw(dev, r->page, r->phy, r->reg, mask, val);
361 }
362
363 static void
364 rtl_phy_save(struct switch_dev *dev, int port, struct rtl_phyregs *regs)
365 {
366 regs->nway = rtl_get(dev, RTL_PORT_REG(port, NWAY));
367 regs->speed = rtl_get(dev, RTL_PORT_REG(port, SPEED));
368 regs->duplex = rtl_get(dev, RTL_PORT_REG(port, DUPLEX));
369 }
370
371 static void
372 rtl_phy_restore(struct switch_dev *dev, int port, struct rtl_phyregs *regs)
373 {
374 rtl_set(dev, RTL_PORT_REG(port, NWAY), regs->nway);
375 rtl_set(dev, RTL_PORT_REG(port, SPEED), regs->speed);
376 rtl_set(dev, RTL_PORT_REG(port, DUPLEX), regs->duplex);
377 }
378
379 static void
380 rtl_port_set_enable(struct switch_dev *dev, int port, int enabled)
381 {
382 rtl_set(dev, RTL_PORT_REG(port, RXEN), enabled);
383 rtl_set(dev, RTL_PORT_REG(port, TXEN), enabled);
384
385 if ((port >= 5) || !enabled)
386 return;
387
388 /* restart autonegotiation if enabled */
389 rtl_set(dev, RTL_PORT_REG(port, NRESTART), 1);
390 }
391
392 static int
393 rtl_hw_apply(struct switch_dev *dev)
394 {
395 int i;
396 int trunk_en, trunk_psel;
397 struct rtl_phyregs port5;
398
399 rtl_phy_save(dev, 5, &port5);
400
401 /* disable rx/tx from PHYs */
402 for (i = 0; i < RTL8306_NUM_PORTS - 1; i++) {
403 rtl_port_set_enable(dev, i, 0);
404 }
405
406 /* save trunking status */
407 trunk_en = rtl_get(dev, RTL_REG_EN_TRUNK);
408 trunk_psel = rtl_get(dev, RTL_REG_TRUNK_PORTSEL);
409
410 /* trunk port 3 and 4
411 * XXX: Big WTF, but RealTek seems to do it */
412 rtl_set(dev, RTL_REG_EN_TRUNK, 1);
413 rtl_set(dev, RTL_REG_TRUNK_PORTSEL, 1);
414
415 /* execute the software reset */
416 rtl_set(dev, RTL_REG_RESET, 1);
417
418 /* wait for the reset to complete,
419 * but don't wait for too long */
420 for (i = 0; i < 10; i++) {
421 if (rtl_get(dev, RTL_REG_RESET) == 0)
422 break;
423
424 msleep(1);
425 }
426
427 /* enable rx/tx from PHYs */
428 for (i = 0; i < RTL8306_NUM_PORTS - 1; i++) {
429 rtl_port_set_enable(dev, i, 1);
430 }
431
432 /* restore trunking settings */
433 rtl_set(dev, RTL_REG_EN_TRUNK, trunk_en);
434 rtl_set(dev, RTL_REG_TRUNK_PORTSEL, trunk_psel);
435 rtl_phy_restore(dev, 5, &port5);
436
437 return 0;
438 }
439
440 static void
441 rtl_hw_init(struct switch_dev *dev)
442 {
443 struct rtl_priv *priv = to_rtl(dev);
444 int cpu_mask = 1 << dev->cpu_port;
445 int i;
446
447 rtl_set(dev, RTL_REG_VLAN_ENABLE, 0);
448 rtl_set(dev, RTL_REG_VLAN_FILTER, 0);
449 rtl_set(dev, RTL_REG_EN_TRUNK, 0);
450 rtl_set(dev, RTL_REG_TRUNK_PORTSEL, 0);
451
452 /* initialize cpu port settings */
453 if (priv->do_cpu) {
454 rtl_set(dev, RTL_REG_CPUPORT, dev->cpu_port);
455 rtl_set(dev, RTL_REG_EN_CPUPORT, 1);
456 } else {
457 rtl_set(dev, RTL_REG_CPUPORT, 7);
458 rtl_set(dev, RTL_REG_EN_CPUPORT, 0);
459 }
460 rtl_set(dev, RTL_REG_EN_TAG_OUT, 0);
461 rtl_set(dev, RTL_REG_EN_TAG_IN, 0);
462 rtl_set(dev, RTL_REG_EN_TAG_CLR, 0);
463
464 /* reset all vlans */
465 for (i = 0; i < RTL8306_NUM_VLANS; i++) {
466 rtl_set(dev, RTL_VLAN_REG(i, VID), i);
467 rtl_set(dev, RTL_VLAN_REG(i, PORTMASK), 0);
468 }
469
470 /* default to port isolation */
471 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
472 unsigned long mask;
473
474 if ((1 << i) == cpu_mask)
475 mask = ((1 << RTL8306_NUM_PORTS) - 1) & ~cpu_mask; /* all bits set */
476 else
477 mask = cpu_mask | (1 << i);
478
479 rtl_set(dev, RTL_VLAN_REG(i, PORTMASK), mask);
480 rtl_set(dev, RTL_PORT_REG(i, PVID), i);
481 rtl_set(dev, RTL_PORT_REG(i, NULL_VID_REPLACE), 1);
482 rtl_set(dev, RTL_PORT_REG(i, VID_INSERT), 1);
483 rtl_set(dev, RTL_PORT_REG(i, TAG_INSERT), 3);
484 }
485 rtl_hw_apply(dev);
486 }
487
488 #ifdef DEBUG
489 static int
490 rtl_set_use_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
491 {
492 struct rtl_priv *priv = to_rtl(dev);
493 priv->do_cpu = val->value.i;
494 rtl_hw_init(dev);
495 return 0;
496 }
497
498 static int
499 rtl_get_use_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
500 {
501 struct rtl_priv *priv = to_rtl(dev);
502 val->value.i = priv->do_cpu;
503 return 0;
504 }
505
506 static int
507 rtl_set_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
508 {
509 dev->cpu_port = val->value.i;
510 rtl_hw_init(dev);
511 return 0;
512 }
513
514 static int
515 rtl_get_cpuport(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
516 {
517 val->value.i = dev->cpu_port;
518 return 0;
519 }
520 #endif
521
522 static int
523 rtl_reset(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
524 {
525 rtl_hw_init(dev);
526 return 0;
527 }
528
529 static int
530 rtl_attr_set_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
531 {
532 int idx = attr->id + (val->port_vlan * attr->ofs);
533 struct rtl_phyregs port;
534
535 if (attr->id >= ARRAY_SIZE(rtl_regs))
536 return -EINVAL;
537
538 if ((attr->max > 0) && (val->value.i > attr->max))
539 return -EINVAL;
540
541 /* access to phy register 22 on port 4/5
542 * needs phy status save/restore */
543 if ((val->port_vlan > 3) &&
544 (rtl_regs[idx].reg == 22) &&
545 (rtl_regs[idx].page == 0)) {
546
547 rtl_phy_save(dev, val->port_vlan, &port);
548 rtl_set(dev, idx, val->value.i);
549 rtl_phy_restore(dev, val->port_vlan, &port);
550 } else {
551 rtl_set(dev, idx, val->value.i);
552 }
553
554 return 0;
555 }
556
557 static int
558 rtl_attr_get_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
559 {
560 int idx = attr->id + (val->port_vlan * attr->ofs);
561
562 if (idx >= ARRAY_SIZE(rtl_regs))
563 return -EINVAL;
564
565 val->value.i = rtl_get(dev, idx);
566 return 0;
567 }
568
569 static int
570 rtl_attr_set_port_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
571 {
572 if (val->port_vlan >= RTL8306_NUM_PORTS)
573 return -EINVAL;
574
575 return rtl_attr_set_int(dev, attr, val);
576 }
577
578 static int
579 rtl_attr_get_port_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
580 {
581 if (val->port_vlan >= RTL8306_NUM_PORTS)
582 return -EINVAL;
583 return rtl_attr_get_int(dev, attr, val);
584 }
585
586 static int
587 rtl_attr_set_vlan_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
588 {
589 if (val->port_vlan >= dev->vlans)
590 return -EINVAL;
591
592 return rtl_attr_set_int(dev, attr, val);
593 }
594
595 static int
596 rtl_attr_get_vlan_int(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
597 {
598 if (val->port_vlan >= dev->vlans)
599 return -EINVAL;
600
601 return rtl_attr_get_int(dev, attr, val);
602 }
603
604 static int
605 rtl_get_ports(struct switch_dev *dev, struct switch_val *val)
606 {
607 unsigned int i, mask;
608
609 mask = rtl_get(dev, RTL_VLAN_REG(val->port_vlan, PORTMASK));
610 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
611 struct switch_port *port;
612
613 if (!(mask & (1 << i)))
614 continue;
615
616 port = &val->value.ports[val->len];
617 port->id = i;
618 port->flags = 0;
619 val->len++;
620 }
621
622 return 0;
623 }
624
625 static int
626 rtl_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
627 {
628 struct rtl_priv *priv = to_rtl(dev);
629 struct rtl_phyregs port;
630 int en = val->value.i;
631 int i;
632
633 rtl_set(dev, RTL_REG_EN_TAG_OUT, en && priv->do_cpu);
634 rtl_set(dev, RTL_REG_EN_TAG_IN, en && priv->do_cpu);
635 rtl_set(dev, RTL_REG_EN_TAG_CLR, en && priv->do_cpu);
636 rtl_set(dev, RTL_REG_VLAN_TAG_AWARE, en);
637 if (en)
638 rtl_set(dev, RTL_REG_VLAN_FILTER, en);
639
640 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
641 if (i > 3)
642 rtl_phy_save(dev, val->port_vlan, &port);
643 rtl_set(dev, RTL_PORT_REG(i, NULL_VID_REPLACE), 1);
644 rtl_set(dev, RTL_PORT_REG(i, VID_INSERT), (en ? (i == dev->cpu_port ? 0 : 1) : 1));
645 rtl_set(dev, RTL_PORT_REG(i, TAG_INSERT), (en ? (i == dev->cpu_port ? 2 : 1) : 3));
646 if (i > 3)
647 rtl_phy_restore(dev, val->port_vlan, &port);
648 }
649 rtl_set(dev, RTL_REG_VLAN_ENABLE, en);
650
651 return 0;
652 }
653
654 static int
655 rtl_get_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
656 {
657 return rtl_get(dev, RTL_REG_VLAN_ENABLE);
658 }
659
660 static int
661 rtl_set_ports(struct switch_dev *dev, struct switch_val *val)
662 {
663 unsigned int mask = 0;
664 unsigned int oldmask;
665 int i;
666
667 for(i = 0; i < val->len; i++)
668 {
669 struct switch_port *port = &val->value.ports[i];
670 bool tagged = false;
671
672 mask |= (1 << port->id);
673
674 if (port->id == dev->cpu_port)
675 continue;
676
677 if ((i == dev->cpu_port) ||
678 (port->flags & (1 << SWITCH_PORT_FLAG_TAGGED)))
679 tagged = true;
680
681 /* fix up PVIDs for added ports */
682 if (!tagged)
683 rtl_set(dev, RTL_PORT_REG(port->id, PVID), val->port_vlan);
684
685 rtl_set(dev, RTL_PORT_REG(port->id, NON_PVID_DISCARD), (tagged ? 0 : 1));
686 rtl_set(dev, RTL_PORT_REG(port->id, VID_INSERT), (tagged ? 0 : 1));
687 rtl_set(dev, RTL_PORT_REG(port->id, TAG_INSERT), (tagged ? 2 : 1));
688 }
689
690 oldmask = rtl_get(dev, RTL_VLAN_REG(val->port_vlan, PORTMASK));
691 rtl_set(dev, RTL_VLAN_REG(val->port_vlan, PORTMASK), mask);
692
693 /* fix up PVIDs for removed ports, default to last vlan */
694 oldmask &= ~mask;
695 for (i = 0; i < RTL8306_NUM_PORTS; i++) {
696 if (!(oldmask & (1 << i)))
697 continue;
698
699 if (i == dev->cpu_port)
700 continue;
701
702 if (rtl_get(dev, RTL_PORT_REG(i, PVID)) == val->port_vlan)
703 rtl_set(dev, RTL_PORT_REG(i, PVID), dev->vlans - 1);
704 }
705
706 return 0;
707 }
708
709 static int
710 rtl8306_config_init(struct phy_device *pdev)
711 {
712 struct net_device *netdev = pdev->attached_dev;
713 struct rtl_priv *priv = pdev->priv;
714 struct switch_dev *dev = &priv->dev;
715 struct switch_val val;
716 unsigned int chipid, chipver, chiptype;
717 int err;
718
719 /* Only init the switch for the primary PHY */
720 if (pdev->addr != 0)
721 return 0;
722
723 val.value.i = 1;
724 memcpy(&priv->dev, &rtldev, sizeof(struct switch_dev));
725 priv->do_cpu = 0;
726 priv->page = -1;
727 priv->bus = pdev->bus;
728
729 dev->priv = priv;
730
731 chipid = rtl_get(dev, RTL_REG_CHIPID);
732 chipver = rtl_get(dev, RTL_REG_CHIPVER);
733 chiptype = rtl_get(dev, RTL_REG_CHIPTYPE);
734 switch(chiptype) {
735 case 0:
736 case 2:
737 strncpy(priv->hwname, RTL_NAME_S, sizeof(priv->hwname));
738 priv->type = RTL_TYPE_S;
739 break;
740 case 1:
741 strncpy(priv->hwname, RTL_NAME_SD, sizeof(priv->hwname));
742 priv->type = RTL_TYPE_SD;
743 break;
744 case 3:
745 strncpy(priv->hwname, RTL_NAME_SDM, sizeof(priv->hwname));
746 priv->type = RTL_TYPE_SDM;
747 break;
748 default:
749 strncpy(priv->hwname, RTL_NAME_UNKNOWN, sizeof(priv->hwname));
750 break;
751 }
752
753 dev->name = priv->hwname;
754 rtl_hw_init(dev);
755
756 printk(KERN_INFO "Registering %s switch with Chip ID: 0x%04x, version: 0x%04x\n", priv->hwname, chipid, chipver);
757
758 err = register_switch(dev, netdev);
759 if (err < 0) {
760 kfree(priv);
761 return err;
762 }
763
764 return 0;
765 }
766
767 static struct switch_attr rtl_globals[] = {
768 {
769 .type = SWITCH_TYPE_INT,
770 .name = "reset",
771 .description = "Reset the switch",
772 .set = rtl_reset,
773 },
774 {
775 .type = SWITCH_TYPE_INT,
776 .name = "enable_vlan",
777 .description = "Enable VLAN mode",
778 .max = 1,
779 .set = rtl_set_vlan,
780 .get = rtl_get_vlan,
781 },
782 {
783 RTL_GLOBAL_REGATTR(EN_TRUNK),
784 .name = "trunk",
785 .description = "Enable port trunking",
786 .max = 1,
787 },
788 {
789 RTL_GLOBAL_REGATTR(TRUNK_PORTSEL),
790 .name = "trunk_sel",
791 .description = "Select ports for trunking (0: 0,1 - 1: 3,4)",
792 .max = 1,
793 },
794 #ifdef DEBUG
795 {
796 RTL_GLOBAL_REGATTR(VLAN_FILTER),
797 .name = "vlan_filter",
798 .description = "Filter incoming packets for allowed VLANS",
799 .max = 1,
800 },
801 {
802 .type = SWITCH_TYPE_INT,
803 .name = "cpuport",
804 .description = "CPU Port",
805 .set = rtl_set_cpuport,
806 .get = rtl_get_cpuport,
807 .max = RTL8306_NUM_PORTS,
808 },
809 {
810 .type = SWITCH_TYPE_INT,
811 .name = "use_cpuport",
812 .description = "CPU Port handling flag",
813 .set = rtl_set_use_cpuport,
814 .get = rtl_get_use_cpuport,
815 .max = RTL8306_NUM_PORTS,
816 },
817 {
818 RTL_GLOBAL_REGATTR(TRAP_CPU),
819 .name = "trap_cpu",
820 .description = "VLAN trap to CPU",
821 .max = 1,
822 },
823 {
824 RTL_GLOBAL_REGATTR(VLAN_TAG_AWARE),
825 .name = "vlan_tag_aware",
826 .description = "Enable VLAN tag awareness",
827 .max = 1,
828 },
829 {
830 RTL_GLOBAL_REGATTR(VLAN_TAG_ONLY),
831 .name = "tag_only",
832 .description = "Only accept tagged packets",
833 .max = 1,
834 },
835 #endif
836 };
837 static struct switch_attr rtl_port[] = {
838 {
839 RTL_PORT_REGATTR(PVID),
840 .name = "pvid",
841 .description = "Port VLAN ID",
842 .max = RTL8306_NUM_VLANS - 1,
843 },
844 {
845 RTL_PORT_REGATTR(LINK),
846 .name = "link",
847 .description = "get the current link state",
848 .max = 1,
849 .set = NULL,
850 },
851 #ifdef DEBUG
852 {
853 RTL_PORT_REGATTR(NULL_VID_REPLACE),
854 .name = "null_vid",
855 .description = "NULL VID gets replaced by port default vid",
856 .max = 1,
857 },
858 {
859 RTL_PORT_REGATTR(NON_PVID_DISCARD),
860 .name = "non_pvid_discard",
861 .description = "discard packets with VID != PVID",
862 .max = 1,
863 },
864 {
865 RTL_PORT_REGATTR(VID_INSERT),
866 .name = "vid_insert_remove",
867 .description = "how should the switch insert and remove vids ?",
868 .max = 3,
869 },
870 {
871 RTL_PORT_REGATTR(TAG_INSERT),
872 .name = "tag_insert",
873 .description = "tag insertion handling",
874 .max = 3,
875 },
876 #endif
877 {
878 RTL_PORT_REGATTR(SPEED),
879 .name = "speed",
880 .description = "current link speed",
881 .max = 1,
882 },
883 {
884 RTL_PORT_REGATTR(NWAY),
885 .name = "nway",
886 .description = "enable autonegotiation",
887 .max = 1,
888 },
889 };
890
891 static struct switch_attr rtl_vlan[] = {
892 {
893 RTL_VLAN_REGATTR(VID),
894 .name = "vid",
895 .description = "VLAN ID",
896 .max = 4095,
897 },
898 };
899
900 /* template */
901 static struct switch_dev rtldev = {
902 .cpu_port = RTL8306_PORT_CPU,
903 .ports = RTL8306_NUM_PORTS,
904 .vlans = RTL8306_NUM_VLANS,
905 .attr_global = {
906 .attr = rtl_globals,
907 .n_attr = ARRAY_SIZE(rtl_globals),
908 },
909 .attr_port = {
910 .attr = rtl_port,
911 .n_attr = ARRAY_SIZE(rtl_port),
912 },
913 .attr_vlan = {
914 .attr = rtl_vlan,
915 .n_attr = ARRAY_SIZE(rtl_vlan),
916 },
917
918 .get_vlan_ports = rtl_get_ports,
919 .set_vlan_ports = rtl_set_ports,
920 .apply_config = rtl_hw_apply,
921 };
922
923
924 static int
925 rtl8306_fixup(struct phy_device *pdev)
926 {
927 struct rtl_priv priv;
928 u16 chipid;
929
930 /* Attach to primary LAN port and WAN port */
931 if (pdev->addr != 0 && pdev->addr != 4)
932 return 0;
933
934 priv.page = -1;
935 priv.bus = pdev->bus;
936 chipid = rtl_get(&priv.dev, RTL_REG_CHIPID);
937 if (chipid == 0x5988)
938 pdev->phy_id = RTL8306_MAGIC;
939
940 return 0;
941 }
942
943 static int
944 rtl8306_probe(struct phy_device *pdev)
945 {
946 struct rtl_priv *priv;
947
948 list_for_each_entry(priv, &phydevs, list) {
949 /*
950 * share one rtl_priv instance between virtual phy
951 * devices on the same bus
952 */
953 if (priv->bus == pdev->bus)
954 goto found;
955 }
956 priv = kzalloc(sizeof(struct rtl_priv), GFP_KERNEL);
957 if (!priv)
958 return -ENOMEM;
959
960 priv->bus = pdev->bus;
961
962 found:
963 pdev->priv = priv;
964 return 0;
965 }
966
967 static void
968 rtl8306_remove(struct phy_device *pdev)
969 {
970 struct rtl_priv *priv = pdev->priv;
971 unregister_switch(&priv->dev);
972 kfree(priv);
973 }
974
975 static int
976 rtl8306_config_aneg(struct phy_device *pdev)
977 {
978 struct rtl_priv *priv = pdev->priv;
979
980 /* Only for WAN */
981 if (pdev->addr == 0)
982 return 0;
983
984 /* Restart autonegotiation */
985 rtl_set(&priv->dev, RTL_PORT_REG(4, NWAY), 1);
986 rtl_set(&priv->dev, RTL_PORT_REG(4, NRESTART), 1);
987
988 return 0;
989 }
990
991 static int
992 rtl8306_read_status(struct phy_device *pdev)
993 {
994 struct rtl_priv *priv = pdev->priv;
995 struct switch_dev *dev = &priv->dev;
996
997 if (pdev->addr == 4) {
998 /* WAN */
999 pdev->speed = rtl_get(dev, RTL_PORT_REG(4, SPEED)) ? SPEED_100 : SPEED_10;
1000 pdev->duplex = rtl_get(dev, RTL_PORT_REG(4, DUPLEX)) ? DUPLEX_FULL : DUPLEX_HALF;
1001 pdev->link = !!rtl_get(dev, RTL_PORT_REG(4, LINK));
1002 } else {
1003 /* LAN */
1004 pdev->speed = SPEED_100;
1005 pdev->duplex = DUPLEX_FULL;
1006 pdev->link = 1;
1007 }
1008
1009 /*
1010 * Bypass generic PHY status read,
1011 * it doesn't work with this switch
1012 */
1013 if (pdev->link) {
1014 pdev->state = PHY_RUNNING;
1015 netif_carrier_on(pdev->attached_dev);
1016 pdev->adjust_link(pdev->attached_dev);
1017 } else {
1018 pdev->state = PHY_NOLINK;
1019 netif_carrier_off(pdev->attached_dev);
1020 pdev->adjust_link(pdev->attached_dev);
1021 }
1022
1023 return 0;
1024 }
1025
1026
1027 static struct phy_driver rtl8306_driver = {
1028 .name = "Realtek RTL8306S",
1029 .flags = PHY_HAS_MAGICANEG,
1030 .phy_id = RTL8306_MAGIC,
1031 .phy_id_mask = 0xffffffff,
1032 .features = PHY_BASIC_FEATURES,
1033 .probe = &rtl8306_probe,
1034 .remove = &rtl8306_remove,
1035 .config_init = &rtl8306_config_init,
1036 .config_aneg = &rtl8306_config_aneg,
1037 .read_status = &rtl8306_read_status,
1038 .driver = { .owner = THIS_MODULE,},
1039 };
1040
1041
1042 static int __init
1043 rtl_init(void)
1044 {
1045 phy_register_fixup_for_id(PHY_ANY_ID, rtl8306_fixup);
1046 return phy_driver_register(&rtl8306_driver);
1047 }
1048
1049 static void __exit
1050 rtl_exit(void)
1051 {
1052 phy_driver_unregister(&rtl8306_driver);
1053 }
1054
1055 module_init(rtl_init);
1056 module_exit(rtl_exit);
1057 MODULE_LICENSE("GPL");
1058
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