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Commit | Line | Data |
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c609719b WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com. | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
c609719b WD |
6 | */ |
7 | ||
8 | /* | |
9 | * This provides a bit-banged interface to the ethernet MII management | |
10 | * channel. | |
11 | */ | |
12 | ||
13 | #include <common.h> | |
c74c8e66 | 14 | #include <dm.h> |
c609719b | 15 | #include <miiphy.h> |
5f184715 | 16 | #include <phy.h> |
c609719b | 17 | |
63ff004c MB |
18 | #include <asm/types.h> |
19 | #include <linux/list.h> | |
20 | #include <malloc.h> | |
21 | #include <net.h> | |
22 | ||
23 | /* local debug macro */ | |
63ff004c MB |
24 | #undef MII_DEBUG |
25 | ||
26 | #undef debug | |
27 | #ifdef MII_DEBUG | |
16a53238 | 28 | #define debug(fmt, args...) printf(fmt, ##args) |
63ff004c | 29 | #else |
16a53238 | 30 | #define debug(fmt, args...) |
63ff004c MB |
31 | #endif /* MII_DEBUG */ |
32 | ||
63ff004c MB |
33 | static struct list_head mii_devs; |
34 | static struct mii_dev *current_mii; | |
35 | ||
0daac978 MF |
36 | /* |
37 | * Lookup the mii_dev struct by the registered device name. | |
38 | */ | |
5f184715 | 39 | struct mii_dev *miiphy_get_dev_by_name(const char *devname) |
0daac978 MF |
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 | ||
0daac978 MF |
55 | return NULL; |
56 | } | |
57 | ||
d9785c14 MB |
58 | /***************************************************************************** |
59 | * | |
60 | * Initialize global data. Need to be called before any other miiphy routine. | |
61 | */ | |
5700bb63 | 62 | void miiphy_init(void) |
d9785c14 | 63 | { |
16a53238 | 64 | INIT_LIST_HEAD(&mii_devs); |
298035df | 65 | current_mii = NULL; |
d9785c14 MB |
66 | } |
67 | ||
5f184715 AF |
68 | struct mii_dev *mdio_alloc(void) |
69 | { | |
70 | struct mii_dev *bus; | |
71 | ||
72 | bus = malloc(sizeof(*bus)); | |
73 | if (!bus) | |
74 | return bus; | |
75 | ||
76 | memset(bus, 0, sizeof(*bus)); | |
77 | ||
78 | /* initalize mii_dev struct fields */ | |
79 | INIT_LIST_HEAD(&bus->link); | |
80 | ||
81 | return bus; | |
82 | } | |
83 | ||
cb6baca7 BM |
84 | void mdio_free(struct mii_dev *bus) |
85 | { | |
86 | free(bus); | |
87 | } | |
88 | ||
5f184715 AF |
89 | int mdio_register(struct mii_dev *bus) |
90 | { | |
d39449b1 | 91 | if (!bus || !bus->read || !bus->write) |
5f184715 AF |
92 | return -1; |
93 | ||
94 | /* check if we have unique name */ | |
95 | if (miiphy_get_dev_by_name(bus->name)) { | |
96 | printf("mdio_register: non unique device name '%s'\n", | |
97 | bus->name); | |
98 | return -1; | |
99 | } | |
100 | ||
101 | /* add it to the list */ | |
102 | list_add_tail(&bus->link, &mii_devs); | |
103 | ||
104 | if (!current_mii) | |
105 | current_mii = bus; | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
cb6baca7 BM |
110 | int mdio_unregister(struct mii_dev *bus) |
111 | { | |
112 | if (!bus) | |
113 | return 0; | |
114 | ||
115 | /* delete it from the list */ | |
116 | list_del(&bus->link); | |
117 | ||
118 | if (current_mii == bus) | |
119 | current_mii = NULL; | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
5f184715 AF |
124 | void mdio_list_devices(void) |
125 | { | |
126 | struct list_head *entry; | |
127 | ||
128 | list_for_each(entry, &mii_devs) { | |
129 | int i; | |
130 | struct mii_dev *bus = list_entry(entry, struct mii_dev, link); | |
131 | ||
132 | printf("%s:\n", bus->name); | |
133 | ||
134 | for (i = 0; i < PHY_MAX_ADDR; i++) { | |
135 | struct phy_device *phydev = bus->phymap[i]; | |
136 | ||
137 | if (phydev) { | |
138 | printf("%d - %s", i, phydev->drv->name); | |
139 | ||
140 | if (phydev->dev) | |
141 | printf(" <--> %s\n", phydev->dev->name); | |
142 | else | |
143 | printf("\n"); | |
144 | } | |
145 | } | |
146 | } | |
147 | } | |
148 | ||
5700bb63 | 149 | int miiphy_set_current_dev(const char *devname) |
63ff004c | 150 | { |
63ff004c MB |
151 | struct mii_dev *dev; |
152 | ||
5f184715 | 153 | dev = miiphy_get_dev_by_name(devname); |
0daac978 MF |
154 | if (dev) { |
155 | current_mii = dev; | |
156 | return 0; | |
63ff004c MB |
157 | } |
158 | ||
5f184715 AF |
159 | printf("No such device: %s\n", devname); |
160 | ||
63ff004c MB |
161 | return 1; |
162 | } | |
163 | ||
5f184715 AF |
164 | struct mii_dev *mdio_get_current_dev(void) |
165 | { | |
166 | return current_mii; | |
167 | } | |
168 | ||
169 | struct phy_device *mdio_phydev_for_ethname(const char *ethname) | |
170 | { | |
171 | struct list_head *entry; | |
172 | struct mii_dev *bus; | |
173 | ||
174 | list_for_each(entry, &mii_devs) { | |
175 | int i; | |
176 | bus = list_entry(entry, struct mii_dev, link); | |
177 | ||
178 | for (i = 0; i < PHY_MAX_ADDR; i++) { | |
179 | if (!bus->phymap[i] || !bus->phymap[i]->dev) | |
180 | continue; | |
181 | ||
182 | if (strcmp(bus->phymap[i]->dev->name, ethname) == 0) | |
183 | return bus->phymap[i]; | |
184 | } | |
185 | } | |
186 | ||
187 | printf("%s is not a known ethernet\n", ethname); | |
188 | return NULL; | |
189 | } | |
190 | ||
5700bb63 | 191 | const char *miiphy_get_current_dev(void) |
63ff004c MB |
192 | { |
193 | if (current_mii) | |
194 | return current_mii->name; | |
195 | ||
196 | return NULL; | |
197 | } | |
198 | ||
ede16ea3 MF |
199 | static struct mii_dev *miiphy_get_active_dev(const char *devname) |
200 | { | |
201 | /* If the current mii is the one we want, return it */ | |
202 | if (current_mii) | |
203 | if (strcmp(current_mii->name, devname) == 0) | |
204 | return current_mii; | |
205 | ||
206 | /* Otherwise, set the active one to the one we want */ | |
207 | if (miiphy_set_current_dev(devname)) | |
208 | return NULL; | |
209 | else | |
210 | return current_mii; | |
211 | } | |
212 | ||
63ff004c MB |
213 | /***************************************************************************** |
214 | * | |
215 | * Read to variable <value> from the PHY attached to device <devname>, | |
216 | * use PHY address <addr> and register <reg>. | |
217 | * | |
1cdabc4b AF |
218 | * This API is deprecated. Use phy_read on a phy_device found via phy_connect |
219 | * | |
63ff004c MB |
220 | * Returns: |
221 | * 0 on success | |
222 | */ | |
f915c931 | 223 | int miiphy_read(const char *devname, unsigned char addr, unsigned char reg, |
298035df | 224 | unsigned short *value) |
63ff004c | 225 | { |
5f184715 | 226 | struct mii_dev *bus; |
d67d5d52 | 227 | int ret; |
63ff004c | 228 | |
5f184715 | 229 | bus = miiphy_get_active_dev(devname); |
d67d5d52 | 230 | if (!bus) |
5f184715 | 231 | return 1; |
63ff004c | 232 | |
d67d5d52 AG |
233 | ret = bus->read(bus, addr, MDIO_DEVAD_NONE, reg); |
234 | if (ret < 0) | |
235 | return 1; | |
236 | ||
237 | *value = (unsigned short)ret; | |
238 | return 0; | |
63ff004c MB |
239 | } |
240 | ||
241 | /***************************************************************************** | |
242 | * | |
243 | * Write <value> to the PHY attached to device <devname>, | |
244 | * use PHY address <addr> and register <reg>. | |
245 | * | |
1cdabc4b AF |
246 | * This API is deprecated. Use phy_write on a phy_device found by phy_connect |
247 | * | |
63ff004c MB |
248 | * Returns: |
249 | * 0 on success | |
250 | */ | |
f915c931 | 251 | int miiphy_write(const char *devname, unsigned char addr, unsigned char reg, |
298035df | 252 | unsigned short value) |
63ff004c | 253 | { |
5f184715 | 254 | struct mii_dev *bus; |
63ff004c | 255 | |
5f184715 AF |
256 | bus = miiphy_get_active_dev(devname); |
257 | if (bus) | |
258 | return bus->write(bus, addr, MDIO_DEVAD_NONE, reg, value); | |
63ff004c | 259 | |
0daac978 | 260 | return 1; |
63ff004c MB |
261 | } |
262 | ||
263 | /***************************************************************************** | |
264 | * | |
265 | * Print out list of registered MII capable devices. | |
266 | */ | |
16a53238 | 267 | void miiphy_listdev(void) |
63ff004c MB |
268 | { |
269 | struct list_head *entry; | |
270 | struct mii_dev *dev; | |
271 | ||
16a53238 AF |
272 | puts("MII devices: "); |
273 | list_for_each(entry, &mii_devs) { | |
274 | dev = list_entry(entry, struct mii_dev, link); | |
275 | printf("'%s' ", dev->name); | |
63ff004c | 276 | } |
16a53238 | 277 | puts("\n"); |
63ff004c MB |
278 | |
279 | if (current_mii) | |
16a53238 | 280 | printf("Current device: '%s'\n", current_mii->name); |
63ff004c MB |
281 | } |
282 | ||
c609719b WD |
283 | /***************************************************************************** |
284 | * | |
285 | * Read the OUI, manufacture's model number, and revision number. | |
286 | * | |
287 | * OUI: 22 bits (unsigned int) | |
288 | * Model: 6 bits (unsigned char) | |
289 | * Revision: 4 bits (unsigned char) | |
290 | * | |
1cdabc4b AF |
291 | * This API is deprecated. |
292 | * | |
c609719b WD |
293 | * Returns: |
294 | * 0 on success | |
295 | */ | |
5700bb63 | 296 | int miiphy_info(const char *devname, unsigned char addr, unsigned int *oui, |
c609719b WD |
297 | unsigned char *model, unsigned char *rev) |
298 | { | |
299 | unsigned int reg = 0; | |
8bf3b005 | 300 | unsigned short tmp; |
c609719b | 301 | |
16a53238 AF |
302 | if (miiphy_read(devname, addr, MII_PHYSID2, &tmp) != 0) { |
303 | debug("PHY ID register 2 read failed\n"); | |
304 | return -1; | |
c609719b | 305 | } |
8bf3b005 | 306 | reg = tmp; |
c609719b | 307 | |
16a53238 | 308 | debug("MII_PHYSID2 @ 0x%x = 0x%04x\n", addr, reg); |
26c7bab8 | 309 | |
c609719b WD |
310 | if (reg == 0xFFFF) { |
311 | /* No physical device present at this address */ | |
16a53238 | 312 | return -1; |
c609719b WD |
313 | } |
314 | ||
16a53238 AF |
315 | if (miiphy_read(devname, addr, MII_PHYSID1, &tmp) != 0) { |
316 | debug("PHY ID register 1 read failed\n"); | |
317 | return -1; | |
c609719b | 318 | } |
8bf3b005 | 319 | reg |= tmp << 16; |
16a53238 | 320 | debug("PHY_PHYIDR[1,2] @ 0x%x = 0x%08x\n", addr, reg); |
26c7bab8 | 321 | |
298035df LJ |
322 | *oui = (reg >> 10); |
323 | *model = (unsigned char)((reg >> 4) & 0x0000003F); | |
324 | *rev = (unsigned char)(reg & 0x0000000F); | |
16a53238 | 325 | return 0; |
c609719b WD |
326 | } |
327 | ||
5f184715 | 328 | #ifndef CONFIG_PHYLIB |
c609719b WD |
329 | /***************************************************************************** |
330 | * | |
331 | * Reset the PHY. | |
1cdabc4b AF |
332 | * |
333 | * This API is deprecated. Use PHYLIB. | |
334 | * | |
c609719b WD |
335 | * Returns: |
336 | * 0 on success | |
337 | */ | |
5700bb63 | 338 | int miiphy_reset(const char *devname, unsigned char addr) |
c609719b WD |
339 | { |
340 | unsigned short reg; | |
ab5a0dcb | 341 | int timeout = 500; |
c609719b | 342 | |
16a53238 AF |
343 | if (miiphy_read(devname, addr, MII_BMCR, ®) != 0) { |
344 | debug("PHY status read failed\n"); | |
345 | return -1; | |
f89920c3 | 346 | } |
16a53238 AF |
347 | if (miiphy_write(devname, addr, MII_BMCR, reg | BMCR_RESET) != 0) { |
348 | debug("PHY reset failed\n"); | |
349 | return -1; | |
c609719b | 350 | } |
5653fc33 | 351 | #ifdef CONFIG_PHY_RESET_DELAY |
16a53238 | 352 | udelay(CONFIG_PHY_RESET_DELAY); /* Intel LXT971A needs this */ |
5653fc33 | 353 | #endif |
c609719b WD |
354 | /* |
355 | * Poll the control register for the reset bit to go to 0 (it is | |
356 | * auto-clearing). This should happen within 0.5 seconds per the | |
357 | * IEEE spec. | |
358 | */ | |
c609719b | 359 | reg = 0x8000; |
ab5a0dcb | 360 | while (((reg & 0x8000) != 0) && timeout--) { |
8ef583a0 | 361 | if (miiphy_read(devname, addr, MII_BMCR, ®) != 0) { |
ab5a0dcb SR |
362 | debug("PHY status read failed\n"); |
363 | return -1; | |
c609719b | 364 | } |
ab5a0dcb | 365 | udelay(1000); |
c609719b WD |
366 | } |
367 | if ((reg & 0x8000) == 0) { | |
16a53238 | 368 | return 0; |
c609719b | 369 | } else { |
16a53238 AF |
370 | puts("PHY reset timed out\n"); |
371 | return -1; | |
c609719b | 372 | } |
16a53238 | 373 | return 0; |
c609719b | 374 | } |
5f184715 | 375 | #endif /* !PHYLIB */ |
c609719b | 376 | |
c609719b WD |
377 | /***************************************************************************** |
378 | * | |
71bc6e64 | 379 | * Determine the ethernet speed (10/100/1000). Return 10 on error. |
c609719b | 380 | */ |
5700bb63 | 381 | int miiphy_speed(const char *devname, unsigned char addr) |
c609719b | 382 | { |
8c83c030 | 383 | u16 bmcr, anlpar, adv; |
c609719b | 384 | |
6fb6af6d | 385 | #if defined(CONFIG_PHY_GIGE) |
71bc6e64 LJ |
386 | u16 btsr; |
387 | ||
388 | /* | |
389 | * Check for 1000BASE-X. If it is supported, then assume that the speed | |
390 | * is 1000. | |
391 | */ | |
16a53238 | 392 | if (miiphy_is_1000base_x(devname, addr)) |
71bc6e64 | 393 | return _1000BASET; |
16a53238 | 394 | |
71bc6e64 LJ |
395 | /* |
396 | * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set. | |
397 | */ | |
398 | /* Check for 1000BASE-T. */ | |
16a53238 AF |
399 | if (miiphy_read(devname, addr, MII_STAT1000, &btsr)) { |
400 | printf("PHY 1000BT status"); | |
71bc6e64 LJ |
401 | goto miiphy_read_failed; |
402 | } | |
403 | if (btsr != 0xFFFF && | |
16a53238 | 404 | (btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))) |
71bc6e64 | 405 | return _1000BASET; |
6fb6af6d | 406 | #endif /* CONFIG_PHY_GIGE */ |
855a496f | 407 | |
a56bd922 | 408 | /* Check Basic Management Control Register first. */ |
16a53238 AF |
409 | if (miiphy_read(devname, addr, MII_BMCR, &bmcr)) { |
410 | printf("PHY speed"); | |
71bc6e64 | 411 | goto miiphy_read_failed; |
c609719b | 412 | } |
a56bd922 | 413 | /* Check if auto-negotiation is on. */ |
8ef583a0 | 414 | if (bmcr & BMCR_ANENABLE) { |
a56bd922 | 415 | /* Get auto-negotiation results. */ |
16a53238 AF |
416 | if (miiphy_read(devname, addr, MII_LPA, &anlpar)) { |
417 | printf("PHY AN speed"); | |
71bc6e64 | 418 | goto miiphy_read_failed; |
a56bd922 | 419 | } |
8c83c030 DL |
420 | |
421 | if (miiphy_read(devname, addr, MII_ADVERTISE, &adv)) { | |
422 | puts("PHY AN adv speed"); | |
423 | goto miiphy_read_failed; | |
424 | } | |
425 | return ((anlpar & adv) & LPA_100) ? _100BASET : _10BASET; | |
a56bd922 WD |
426 | } |
427 | /* Get speed from basic control settings. */ | |
8ef583a0 | 428 | return (bmcr & BMCR_SPEED100) ? _100BASET : _10BASET; |
a56bd922 | 429 | |
5f841959 | 430 | miiphy_read_failed: |
16a53238 | 431 | printf(" read failed, assuming 10BASE-T\n"); |
71bc6e64 | 432 | return _10BASET; |
c609719b WD |
433 | } |
434 | ||
c609719b WD |
435 | /***************************************************************************** |
436 | * | |
71bc6e64 | 437 | * Determine full/half duplex. Return half on error. |
c609719b | 438 | */ |
5700bb63 | 439 | int miiphy_duplex(const char *devname, unsigned char addr) |
c609719b | 440 | { |
8c83c030 | 441 | u16 bmcr, anlpar, adv; |
c609719b | 442 | |
6fb6af6d | 443 | #if defined(CONFIG_PHY_GIGE) |
71bc6e64 LJ |
444 | u16 btsr; |
445 | ||
446 | /* Check for 1000BASE-X. */ | |
16a53238 | 447 | if (miiphy_is_1000base_x(devname, addr)) { |
71bc6e64 | 448 | /* 1000BASE-X */ |
16a53238 AF |
449 | if (miiphy_read(devname, addr, MII_LPA, &anlpar)) { |
450 | printf("1000BASE-X PHY AN duplex"); | |
71bc6e64 LJ |
451 | goto miiphy_read_failed; |
452 | } | |
453 | } | |
454 | /* | |
455 | * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set. | |
456 | */ | |
457 | /* Check for 1000BASE-T. */ | |
16a53238 AF |
458 | if (miiphy_read(devname, addr, MII_STAT1000, &btsr)) { |
459 | printf("PHY 1000BT status"); | |
71bc6e64 LJ |
460 | goto miiphy_read_failed; |
461 | } | |
462 | if (btsr != 0xFFFF) { | |
463 | if (btsr & PHY_1000BTSR_1000FD) { | |
464 | return FULL; | |
465 | } else if (btsr & PHY_1000BTSR_1000HD) { | |
466 | return HALF; | |
855a496f WD |
467 | } |
468 | } | |
6fb6af6d | 469 | #endif /* CONFIG_PHY_GIGE */ |
855a496f | 470 | |
a56bd922 | 471 | /* Check Basic Management Control Register first. */ |
16a53238 AF |
472 | if (miiphy_read(devname, addr, MII_BMCR, &bmcr)) { |
473 | puts("PHY duplex"); | |
71bc6e64 | 474 | goto miiphy_read_failed; |
c609719b | 475 | } |
a56bd922 | 476 | /* Check if auto-negotiation is on. */ |
8ef583a0 | 477 | if (bmcr & BMCR_ANENABLE) { |
a56bd922 | 478 | /* Get auto-negotiation results. */ |
16a53238 AF |
479 | if (miiphy_read(devname, addr, MII_LPA, &anlpar)) { |
480 | puts("PHY AN duplex"); | |
71bc6e64 | 481 | goto miiphy_read_failed; |
a56bd922 | 482 | } |
8c83c030 DL |
483 | |
484 | if (miiphy_read(devname, addr, MII_ADVERTISE, &adv)) { | |
485 | puts("PHY AN adv duplex"); | |
486 | goto miiphy_read_failed; | |
487 | } | |
488 | return ((anlpar & adv) & (LPA_10FULL | LPA_100FULL)) ? | |
71bc6e64 | 489 | FULL : HALF; |
a56bd922 WD |
490 | } |
491 | /* Get speed from basic control settings. */ | |
8ef583a0 | 492 | return (bmcr & BMCR_FULLDPLX) ? FULL : HALF; |
71bc6e64 | 493 | |
5f841959 | 494 | miiphy_read_failed: |
16a53238 | 495 | printf(" read failed, assuming half duplex\n"); |
71bc6e64 LJ |
496 | return HALF; |
497 | } | |
a56bd922 | 498 | |
71bc6e64 LJ |
499 | /***************************************************************************** |
500 | * | |
501 | * Return 1 if PHY supports 1000BASE-X, 0 if PHY supports 10BASE-T/100BASE-TX/ | |
502 | * 1000BASE-T, or on error. | |
503 | */ | |
5700bb63 | 504 | int miiphy_is_1000base_x(const char *devname, unsigned char addr) |
71bc6e64 LJ |
505 | { |
506 | #if defined(CONFIG_PHY_GIGE) | |
507 | u16 exsr; | |
508 | ||
16a53238 AF |
509 | if (miiphy_read(devname, addr, MII_ESTATUS, &exsr)) { |
510 | printf("PHY extended status read failed, assuming no " | |
71bc6e64 LJ |
511 | "1000BASE-X\n"); |
512 | return 0; | |
513 | } | |
8ef583a0 | 514 | return 0 != (exsr & (ESTATUS_1000XF | ESTATUS_1000XH)); |
71bc6e64 LJ |
515 | #else |
516 | return 0; | |
517 | #endif | |
c609719b WD |
518 | } |
519 | ||
6d0f6bcf | 520 | #ifdef CONFIG_SYS_FAULT_ECHO_LINK_DOWN |
fc3e2165 WD |
521 | /***************************************************************************** |
522 | * | |
523 | * Determine link status | |
524 | */ | |
5700bb63 | 525 | int miiphy_link(const char *devname, unsigned char addr) |
fc3e2165 WD |
526 | { |
527 | unsigned short reg; | |
528 | ||
a3d991bd | 529 | /* dummy read; needed to latch some phys */ |
16a53238 AF |
530 | (void)miiphy_read(devname, addr, MII_BMSR, ®); |
531 | if (miiphy_read(devname, addr, MII_BMSR, ®)) { | |
532 | puts("MII_BMSR read failed, assuming no link\n"); | |
533 | return 0; | |
fc3e2165 WD |
534 | } |
535 | ||
536 | /* Determine if a link is active */ | |
8ef583a0 | 537 | if ((reg & BMSR_LSTATUS) != 0) { |
16a53238 | 538 | return 1; |
fc3e2165 | 539 | } else { |
16a53238 | 540 | return 0; |
fc3e2165 WD |
541 | } |
542 | } | |
543 | #endif |