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13#include <common.h>
14#include <dm.h>
15#include <miiphy.h>
16#include <phy.h>
17
18#include <asm/types.h>
19#include <linux/list.h>
20#include <malloc.h>
21#include <net.h>
22
23
24#undef MII_DEBUG
25
26#undef debug
27#ifdef MII_DEBUG
28#define debug(fmt, args...) printf(fmt, ##args)
29#else
30#define debug(fmt, args...)
31#endif
32
33static struct list_head mii_devs;
34static struct mii_dev *current_mii;
35
36
37
38
39struct mii_dev *miiphy_get_dev_by_name(const char *devname)
40{
41 struct list_head *entry;
42 struct mii_dev *dev;
43
44 if (!devname) {
45 printf("NULL device name!\n");
46 return NULL;
47 }
48
49 list_for_each(entry, &mii_devs) {
50 dev = list_entry(entry, struct mii_dev, link);
51 if (strcmp(dev->name, devname) == 0)
52 return dev;
53 }
54
55 return NULL;
56}
57
58
59
60
61
62void miiphy_init(void)
63{
64 INIT_LIST_HEAD(&mii_devs);
65 current_mii = NULL;
66}
67
68static int legacy_miiphy_read(struct mii_dev *bus, int addr, int devad, int reg)
69{
70 unsigned short val;
71 int ret;
72 struct legacy_mii_dev *ldev = bus->priv;
73
74 ret = ldev->read(bus->name, addr, reg, &val);
75
76 return ret ? -1 : (int)val;
77}
78
79static int legacy_miiphy_write(struct mii_dev *bus, int addr, int devad,
80 int reg, u16 val)
81{
82 struct legacy_mii_dev *ldev = bus->priv;
83
84 return ldev->write(bus->name, addr, reg, val);
85}
86
87
88
89
90
91
92void miiphy_register(const char *name,
93 int (*read)(const char *devname, unsigned char addr,
94 unsigned char reg, unsigned short *value),
95 int (*write)(const char *devname, unsigned char addr,
96 unsigned char reg, unsigned short value))
97{
98 struct mii_dev *new_dev;
99 struct legacy_mii_dev *ldev;
100
101 BUG_ON(strlen(name) >= MDIO_NAME_LEN);
102
103
104 new_dev = miiphy_get_dev_by_name(name);
105 if (new_dev) {
106 printf("miiphy_register: non unique device name '%s'\n", name);
107 return;
108 }
109
110
111 new_dev = mdio_alloc();
112 ldev = malloc(sizeof(*ldev));
113
114 if (new_dev == NULL || ldev == NULL) {
115 printf("miiphy_register: cannot allocate memory for '%s'\n",
116 name);
117 free(ldev);
118 mdio_free(new_dev);
119 return;
120 }
121
122
123 new_dev->read = legacy_miiphy_read;
124 new_dev->write = legacy_miiphy_write;
125 strncpy(new_dev->name, name, MDIO_NAME_LEN);
126 new_dev->name[MDIO_NAME_LEN - 1] = 0;
127 ldev->read = read;
128 ldev->write = write;
129 new_dev->priv = ldev;
130
131 debug("miiphy_register: added '%s', read=0x%08lx, write=0x%08lx\n",
132 new_dev->name, ldev->read, ldev->write);
133
134
135 list_add_tail(&new_dev->link, &mii_devs);
136
137 if (!current_mii)
138 current_mii = new_dev;
139}
140
141struct mii_dev *mdio_alloc(void)
142{
143 struct mii_dev *bus;
144
145 bus = malloc(sizeof(*bus));
146 if (!bus)
147 return bus;
148
149 memset(bus, 0, sizeof(*bus));
150
151
152 INIT_LIST_HEAD(&bus->link);
153
154 return bus;
155}
156
157void mdio_free(struct mii_dev *bus)
158{
159 free(bus);
160}
161
162int mdio_register(struct mii_dev *bus)
163{
164 if (!bus || !bus->read || !bus->write)
165 return -1;
166
167
168 if (miiphy_get_dev_by_name(bus->name)) {
169 printf("mdio_register: non unique device name '%s'\n",
170 bus->name);
171 return -1;
172 }
173
174
175 list_add_tail(&bus->link, &mii_devs);
176
177 if (!current_mii)
178 current_mii = bus;
179
180 return 0;
181}
182
183int mdio_unregister(struct mii_dev *bus)
184{
185 if (!bus)
186 return 0;
187
188
189 list_del(&bus->link);
190
191 if (current_mii == bus)
192 current_mii = NULL;
193
194 return 0;
195}
196
197void mdio_list_devices(void)
198{
199 struct list_head *entry;
200
201 list_for_each(entry, &mii_devs) {
202 int i;
203 struct mii_dev *bus = list_entry(entry, struct mii_dev, link);
204
205 printf("%s:\n", bus->name);
206
207 for (i = 0; i < PHY_MAX_ADDR; i++) {
208 struct phy_device *phydev = bus->phymap[i];
209
210 if (phydev) {
211 printf("%d - %s", i, phydev->drv->name);
212
213 if (phydev->dev)
214 printf(" <--> %s\n", phydev->dev->name);
215 else
216 printf("\n");
217 }
218 }
219 }
220}
221
222int miiphy_set_current_dev(const char *devname)
223{
224 struct mii_dev *dev;
225
226 dev = miiphy_get_dev_by_name(devname);
227 if (dev) {
228 current_mii = dev;
229 return 0;
230 }
231
232 printf("No such device: %s\n", devname);
233
234 return 1;
235}
236
237struct mii_dev *mdio_get_current_dev(void)
238{
239 return current_mii;
240}
241
242struct phy_device *mdio_phydev_for_ethname(const char *ethname)
243{
244 struct list_head *entry;
245 struct mii_dev *bus;
246
247 list_for_each(entry, &mii_devs) {
248 int i;
249 bus = list_entry(entry, struct mii_dev, link);
250
251 for (i = 0; i < PHY_MAX_ADDR; i++) {
252 if (!bus->phymap[i] || !bus->phymap[i]->dev)
253 continue;
254
255 if (strcmp(bus->phymap[i]->dev->name, ethname) == 0)
256 return bus->phymap[i];
257 }
258 }
259
260 printf("%s is not a known ethernet\n", ethname);
261 return NULL;
262}
263
264const char *miiphy_get_current_dev(void)
265{
266 if (current_mii)
267 return current_mii->name;
268
269 return NULL;
270}
271
272static struct mii_dev *miiphy_get_active_dev(const char *devname)
273{
274
275 if (current_mii)
276 if (strcmp(current_mii->name, devname) == 0)
277 return current_mii;
278
279
280 if (miiphy_set_current_dev(devname))
281 return NULL;
282 else
283 return current_mii;
284}
285
286
287
288
289
290
291
292
293
294
295
296int miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
297 unsigned short *value)
298{
299 struct mii_dev *bus;
300 int ret;
301
302 bus = miiphy_get_active_dev(devname);
303 if (!bus)
304 return 1;
305
306 ret = bus->read(bus, addr, MDIO_DEVAD_NONE, reg);
307 if (ret < 0)
308 return 1;
309
310 *value = (unsigned short)ret;
311 return 0;
312}
313
314
315
316
317
318
319
320
321
322
323
324int miiphy_write(const char *devname, unsigned char addr, unsigned char reg,
325 unsigned short value)
326{
327 struct mii_dev *bus;
328
329 bus = miiphy_get_active_dev(devname);
330 if (bus)
331 return bus->write(bus, addr, MDIO_DEVAD_NONE, reg, value);
332
333 return 1;
334}
335
336
337
338
339
340void miiphy_listdev(void)
341{
342 struct list_head *entry;
343 struct mii_dev *dev;
344
345 puts("MII devices: ");
346 list_for_each(entry, &mii_devs) {
347 dev = list_entry(entry, struct mii_dev, link);
348 printf("'%s' ", dev->name);
349 }
350 puts("\n");
351
352 if (current_mii)
353 printf("Current device: '%s'\n", current_mii->name);
354}
355
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359
360
361
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363
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365
366
367
368
369int miiphy_info(const char *devname, unsigned char addr, unsigned int *oui,
370 unsigned char *model, unsigned char *rev)
371{
372 unsigned int reg = 0;
373 unsigned short tmp;
374
375 if (miiphy_read(devname, addr, MII_PHYSID2, &tmp) != 0) {
376 debug("PHY ID register 2 read failed\n");
377 return -1;
378 }
379 reg = tmp;
380
381 debug("MII_PHYSID2 @ 0x%x = 0x%04x\n", addr, reg);
382
383 if (reg == 0xFFFF) {
384
385 return -1;
386 }
387
388 if (miiphy_read(devname, addr, MII_PHYSID1, &tmp) != 0) {
389 debug("PHY ID register 1 read failed\n");
390 return -1;
391 }
392 reg |= tmp << 16;
393 debug("PHY_PHYIDR[1,2] @ 0x%x = 0x%08x\n", addr, reg);
394
395 *oui = (reg >> 10);
396 *model = (unsigned char)((reg >> 4) & 0x0000003F);
397 *rev = (unsigned char)(reg & 0x0000000F);
398 return 0;
399}
400
401#ifndef CONFIG_PHYLIB
402
403
404
405
406
407
408
409
410
411int miiphy_reset(const char *devname, unsigned char addr)
412{
413 unsigned short reg;
414 int timeout = 500;
415
416 if (miiphy_read(devname, addr, MII_BMCR, ®) != 0) {
417 debug("PHY status read failed\n");
418 return -1;
419 }
420 if (miiphy_write(devname, addr, MII_BMCR, reg | BMCR_RESET) != 0) {
421 debug("PHY reset failed\n");
422 return -1;
423 }
424#ifdef CONFIG_PHY_RESET_DELAY
425 udelay(CONFIG_PHY_RESET_DELAY);
426#endif
427
428
429
430
431
432 reg = 0x8000;
433 while (((reg & 0x8000) != 0) && timeout--) {
434 if (miiphy_read(devname, addr, MII_BMCR, ®) != 0) {
435 debug("PHY status read failed\n");
436 return -1;
437 }
438 udelay(1000);
439 }
440 if ((reg & 0x8000) == 0) {
441 return 0;
442 } else {
443 puts("PHY reset timed out\n");
444 return -1;
445 }
446 return 0;
447}
448#endif
449
450
451
452
453
454int miiphy_speed(const char *devname, unsigned char addr)
455{
456 u16 bmcr, anlpar;
457
458#if defined(CONFIG_PHY_GIGE)
459 u16 btsr;
460
461
462
463
464
465 if (miiphy_is_1000base_x(devname, addr))
466 return _1000BASET;
467
468
469
470
471
472 if (miiphy_read(devname, addr, MII_STAT1000, &btsr)) {
473 printf("PHY 1000BT status");
474 goto miiphy_read_failed;
475 }
476 if (btsr != 0xFFFF &&
477 (btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)))
478 return _1000BASET;
479#endif
480
481
482 if (miiphy_read(devname, addr, MII_BMCR, &bmcr)) {
483 printf("PHY speed");
484 goto miiphy_read_failed;
485 }
486
487 if (bmcr & BMCR_ANENABLE) {
488
489 if (miiphy_read(devname, addr, MII_LPA, &anlpar)) {
490 printf("PHY AN speed");
491 goto miiphy_read_failed;
492 }
493 return (anlpar & LPA_100) ? _100BASET : _10BASET;
494 }
495
496 return (bmcr & BMCR_SPEED100) ? _100BASET : _10BASET;
497
498miiphy_read_failed:
499 printf(" read failed, assuming 10BASE-T\n");
500 return _10BASET;
501}
502
503
504
505
506
507int miiphy_duplex(const char *devname, unsigned char addr)
508{
509 u16 bmcr, anlpar;
510
511#if defined(CONFIG_PHY_GIGE)
512 u16 btsr;
513
514
515 if (miiphy_is_1000base_x(devname, addr)) {
516
517 if (miiphy_read(devname, addr, MII_LPA, &anlpar)) {
518 printf("1000BASE-X PHY AN duplex");
519 goto miiphy_read_failed;
520 }
521 }
522
523
524
525
526 if (miiphy_read(devname, addr, MII_STAT1000, &btsr)) {
527 printf("PHY 1000BT status");
528 goto miiphy_read_failed;
529 }
530 if (btsr != 0xFFFF) {
531 if (btsr & PHY_1000BTSR_1000FD) {
532 return FULL;
533 } else if (btsr & PHY_1000BTSR_1000HD) {
534 return HALF;
535 }
536 }
537#endif
538
539
540 if (miiphy_read(devname, addr, MII_BMCR, &bmcr)) {
541 puts("PHY duplex");
542 goto miiphy_read_failed;
543 }
544
545 if (bmcr & BMCR_ANENABLE) {
546
547 if (miiphy_read(devname, addr, MII_LPA, &anlpar)) {
548 puts("PHY AN duplex");
549 goto miiphy_read_failed;
550 }
551 return (anlpar & (LPA_10FULL | LPA_100FULL)) ?
552 FULL : HALF;
553 }
554
555 return (bmcr & BMCR_FULLDPLX) ? FULL : HALF;
556
557miiphy_read_failed:
558 printf(" read failed, assuming half duplex\n");
559 return HALF;
560}
561
562
563
564
565
566
567int miiphy_is_1000base_x(const char *devname, unsigned char addr)
568{
569#if defined(CONFIG_PHY_GIGE)
570 u16 exsr;
571
572 if (miiphy_read(devname, addr, MII_ESTATUS, &exsr)) {
573 printf("PHY extended status read failed, assuming no "
574 "1000BASE-X\n");
575 return 0;
576 }
577 return 0 != (exsr & (ESTATUS_1000XF | ESTATUS_1000XH));
578#else
579 return 0;
580#endif
581}
582
583#ifdef CONFIG_SYS_FAULT_ECHO_LINK_DOWN
584
585
586
587
588int miiphy_link(const char *devname, unsigned char addr)
589{
590 unsigned short reg;
591
592
593 (void)miiphy_read(devname, addr, MII_BMSR, ®);
594 if (miiphy_read(devname, addr, MII_BMSR, ®)) {
595 puts("MII_BMSR read failed, assuming no link\n");
596 return 0;
597 }
598
599
600 if ((reg & BMSR_LSTATUS) != 0) {
601 return 1;
602 } else {
603 return 0;
604 }
605}
606#endif
607