]>
Commit | Line | Data |
---|---|---|
c609719b | 1 | /* |
05c3e68f | 2 | * (C) Copyright 2001-2015 |
c609719b | 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
05c3e68f | 4 | * Joe Hershberger, National Instruments |
c609719b | 5 | * |
1a459660 | 6 | * SPDX-License-Identifier: GPL-2.0+ |
c609719b WD |
7 | */ |
8 | ||
9 | #include <common.h> | |
10 | #include <command.h> | |
05c3e68f | 11 | #include <dm.h> |
6e0d26c0 | 12 | #include <environment.h> |
c609719b | 13 | #include <net.h> |
d9785c14 | 14 | #include <miiphy.h> |
5f184715 | 15 | #include <phy.h> |
75d9a45c | 16 | #include <asm/errno.h> |
05c3e68f | 17 | #include <dm/device-internal.h> |
6e0d26c0 | 18 | #include <dm/uclass-internal.h> |
818f91eb | 19 | #include "eth_internal.h" |
c609719b | 20 | |
d2eaec60 JH |
21 | DECLARE_GLOBAL_DATA_PTR; |
22 | ||
ecee9324 BW |
23 | static int eth_mac_skip(int index) |
24 | { | |
25 | char enetvar[15]; | |
26 | char *skip_state; | |
ff819a3a | 27 | |
ecee9324 | 28 | sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index); |
ff819a3a JH |
29 | skip_state = getenv(enetvar); |
30 | return skip_state != NULL; | |
ecee9324 BW |
31 | } |
32 | ||
84eb1fba JH |
33 | static void eth_current_changed(void); |
34 | ||
3bc42700 SG |
35 | /* |
36 | * CPU and board-specific Ethernet initializations. Aliased function | |
37 | * signals caller to move on | |
38 | */ | |
39 | static int __def_eth_init(bd_t *bis) | |
40 | { | |
41 | return -1; | |
42 | } | |
43 | int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init"))); | |
44 | int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init"))); | |
45 | ||
05c3e68f JH |
46 | #ifdef CONFIG_DM_ETH |
47 | /** | |
48 | * struct eth_device_priv - private structure for each Ethernet device | |
49 | * | |
50 | * @state: The state of the Ethernet MAC driver (defined by enum eth_state_t) | |
51 | */ | |
52 | struct eth_device_priv { | |
53 | enum eth_state_t state; | |
54 | }; | |
55 | ||
56 | /** | |
57 | * struct eth_uclass_priv - The structure attached to the uclass itself | |
58 | * | |
59 | * @current: The Ethernet device that the network functions are using | |
60 | */ | |
61 | struct eth_uclass_priv { | |
62 | struct udevice *current; | |
63 | }; | |
64 | ||
60304592 JH |
65 | /* eth_errno - This stores the most recent failure code from DM functions */ |
66 | static int eth_errno; | |
67 | ||
05c3e68f JH |
68 | static struct eth_uclass_priv *eth_get_uclass_priv(void) |
69 | { | |
70 | struct uclass *uc; | |
71 | ||
72 | uclass_get(UCLASS_ETH, &uc); | |
73 | assert(uc); | |
74 | return uc->priv; | |
75 | } | |
76 | ||
77 | static void eth_set_current_to_next(void) | |
78 | { | |
79 | struct eth_uclass_priv *uc_priv; | |
80 | ||
81 | uc_priv = eth_get_uclass_priv(); | |
82 | if (uc_priv->current) | |
83 | uclass_next_device(&uc_priv->current); | |
84 | if (!uc_priv->current) | |
85 | uclass_first_device(UCLASS_ETH, &uc_priv->current); | |
86 | } | |
87 | ||
60304592 JH |
88 | /* |
89 | * Typically this will simply return the active device. | |
90 | * In the case where the most recent active device was unset, this will attempt | |
91 | * to return the first device. If that device doesn't exist or fails to probe, | |
92 | * this function will return NULL. | |
93 | */ | |
05c3e68f JH |
94 | struct udevice *eth_get_dev(void) |
95 | { | |
96 | struct eth_uclass_priv *uc_priv; | |
97 | ||
98 | uc_priv = eth_get_uclass_priv(); | |
99 | if (!uc_priv->current) | |
60304592 | 100 | eth_errno = uclass_first_device(UCLASS_ETH, |
05c3e68f JH |
101 | &uc_priv->current); |
102 | return uc_priv->current; | |
103 | } | |
104 | ||
60304592 JH |
105 | /* |
106 | * Typically this will just store a device pointer. | |
107 | * In case it was not probed, we will attempt to do so. | |
108 | * dev may be NULL to unset the active device. | |
109 | */ | |
05c3e68f JH |
110 | static void eth_set_dev(struct udevice *dev) |
111 | { | |
ac1d3138 | 112 | if (dev && !device_active(dev)) { |
60304592 | 113 | eth_errno = device_probe(dev); |
ac1d3138 BM |
114 | if (eth_errno) |
115 | dev = NULL; | |
116 | } | |
117 | ||
05c3e68f JH |
118 | eth_get_uclass_priv()->current = dev; |
119 | } | |
120 | ||
e58780dc JH |
121 | /* |
122 | * Find the udevice that either has the name passed in as devname or has an | |
123 | * alias named devname. | |
124 | */ | |
125 | struct udevice *eth_get_dev_by_name(const char *devname) | |
126 | { | |
127 | int seq = -1; | |
128 | char *endp = NULL; | |
129 | const char *startp = NULL; | |
130 | struct udevice *it; | |
131 | struct uclass *uc; | |
e408c421 | 132 | int len = strlen("eth"); |
e58780dc JH |
133 | |
134 | /* Must be longer than 3 to be an alias */ | |
e408c421 BM |
135 | if (!strncmp(devname, "eth", len) && strlen(devname) > len) { |
136 | startp = devname + len; | |
e58780dc JH |
137 | seq = simple_strtoul(startp, &endp, 10); |
138 | } | |
139 | ||
140 | uclass_get(UCLASS_ETH, &uc); | |
141 | uclass_foreach_dev(it, uc) { | |
60304592 JH |
142 | /* |
143 | * We need the seq to be valid, so try to probe it. | |
144 | * If the probe fails, the seq will not match since it will be | |
145 | * -1 instead of what we are looking for. | |
146 | * We don't care about errors from probe here. Either they won't | |
147 | * match an alias or it will match a literal name and we'll pick | |
148 | * up the error when we try to probe again in eth_set_dev(). | |
149 | */ | |
ac1d3138 BM |
150 | if (device_probe(it)) |
151 | continue; | |
152 | /* Check for the name or the sequence number to match */ | |
e58780dc JH |
153 | if (strcmp(it->name, devname) == 0 || |
154 | (endp > startp && it->seq == seq)) | |
155 | return it; | |
156 | } | |
157 | ||
158 | return NULL; | |
159 | } | |
160 | ||
05c3e68f JH |
161 | unsigned char *eth_get_ethaddr(void) |
162 | { | |
163 | struct eth_pdata *pdata; | |
164 | ||
165 | if (eth_get_dev()) { | |
166 | pdata = eth_get_dev()->platdata; | |
167 | return pdata->enetaddr; | |
168 | } | |
169 | ||
170 | return NULL; | |
171 | } | |
172 | ||
173 | /* Set active state without calling start on the driver */ | |
174 | int eth_init_state_only(void) | |
175 | { | |
176 | struct udevice *current; | |
177 | struct eth_device_priv *priv; | |
178 | ||
179 | current = eth_get_dev(); | |
180 | if (!current || !device_active(current)) | |
181 | return -EINVAL; | |
182 | ||
183 | priv = current->uclass_priv; | |
184 | priv->state = ETH_STATE_ACTIVE; | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | /* Set passive state without calling stop on the driver */ | |
190 | void eth_halt_state_only(void) | |
191 | { | |
192 | struct udevice *current; | |
193 | struct eth_device_priv *priv; | |
194 | ||
195 | current = eth_get_dev(); | |
196 | if (!current || !device_active(current)) | |
197 | return; | |
198 | ||
199 | priv = current->uclass_priv; | |
200 | priv->state = ETH_STATE_PASSIVE; | |
201 | } | |
202 | ||
203 | int eth_get_dev_index(void) | |
204 | { | |
205 | if (eth_get_dev()) | |
206 | return eth_get_dev()->seq; | |
207 | return -1; | |
208 | } | |
209 | ||
f566c994 JH |
210 | static int eth_write_hwaddr(struct udevice *dev) |
211 | { | |
212 | struct eth_pdata *pdata = dev->platdata; | |
213 | int ret = 0; | |
214 | ||
215 | if (!dev || !device_active(dev)) | |
216 | return -EINVAL; | |
217 | ||
218 | /* seq is valid since the device is active */ | |
219 | if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) { | |
220 | if (!is_valid_ethaddr(pdata->enetaddr)) { | |
221 | printf("\nError: %s address %pM illegal value\n", | |
222 | dev->name, pdata->enetaddr); | |
223 | return -EINVAL; | |
224 | } | |
225 | ||
b86f795a SG |
226 | /* |
227 | * Drivers are allowed to decide not to implement this at | |
228 | * run-time. E.g. Some devices may use it and some may not. | |
229 | */ | |
f566c994 | 230 | ret = eth_get_ops(dev)->write_hwaddr(dev); |
b86f795a SG |
231 | if (ret == -ENOSYS) |
232 | ret = 0; | |
f566c994 JH |
233 | if (ret) |
234 | printf("\nWarning: %s failed to set MAC address\n", | |
235 | dev->name); | |
236 | } | |
237 | ||
238 | return ret; | |
239 | } | |
240 | ||
6e0d26c0 JH |
241 | static int on_ethaddr(const char *name, const char *value, enum env_op op, |
242 | int flags) | |
243 | { | |
244 | int index; | |
245 | int retval; | |
246 | struct udevice *dev; | |
247 | ||
248 | /* look for an index after "eth" */ | |
249 | index = simple_strtoul(name + 3, NULL, 10); | |
250 | ||
251 | retval = uclass_find_device_by_seq(UCLASS_ETH, index, false, &dev); | |
252 | if (!retval) { | |
253 | struct eth_pdata *pdata = dev->platdata; | |
254 | switch (op) { | |
255 | case env_op_create: | |
256 | case env_op_overwrite: | |
257 | eth_parse_enetaddr(value, pdata->enetaddr); | |
258 | break; | |
259 | case env_op_delete: | |
260 | memset(pdata->enetaddr, 0, 6); | |
261 | } | |
262 | } | |
263 | ||
264 | return 0; | |
265 | } | |
266 | U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr); | |
267 | ||
05c3e68f JH |
268 | int eth_init(void) |
269 | { | |
4cdc2c8c BM |
270 | char *ethact = getenv("ethact"); |
271 | char *ethrotate = getenv("ethrotate"); | |
272 | struct udevice *current = NULL; | |
05c3e68f | 273 | struct udevice *old_current; |
60304592 | 274 | int ret = -ENODEV; |
05c3e68f | 275 | |
4cdc2c8c BM |
276 | /* |
277 | * When 'ethrotate' variable is set to 'no' and 'ethact' variable | |
278 | * is already set to an ethernet device, we should stick to 'ethact'. | |
279 | */ | |
280 | if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0)) { | |
281 | if (ethact) { | |
282 | current = eth_get_dev_by_name(ethact); | |
283 | if (!current) | |
284 | return -EINVAL; | |
285 | } | |
286 | } | |
287 | ||
05c3e68f | 288 | if (!current) { |
4cdc2c8c BM |
289 | current = eth_get_dev(); |
290 | if (!current) { | |
291 | printf("No ethernet found.\n"); | |
292 | return -ENODEV; | |
293 | } | |
05c3e68f JH |
294 | } |
295 | ||
296 | old_current = current; | |
297 | do { | |
ac1d3138 BM |
298 | if (current) { |
299 | debug("Trying %s\n", current->name); | |
300 | ||
301 | if (device_active(current)) { | |
302 | ret = eth_get_ops(current)->start(current); | |
303 | if (ret >= 0) { | |
304 | struct eth_device_priv *priv = | |
305 | current->uclass_priv; | |
306 | ||
307 | priv->state = ETH_STATE_ACTIVE; | |
308 | return 0; | |
309 | } | |
310 | } else { | |
311 | ret = eth_errno; | |
05c3e68f | 312 | } |
ac1d3138 BM |
313 | |
314 | debug("FAIL\n"); | |
ff819a3a | 315 | } else { |
ac1d3138 | 316 | debug("PROBE FAIL\n"); |
ff819a3a | 317 | } |
60304592 | 318 | |
60304592 JH |
319 | /* |
320 | * If ethrotate is enabled, this will change "current", | |
321 | * otherwise we will drop out of this while loop immediately | |
322 | */ | |
05c3e68f | 323 | eth_try_another(0); |
60304592 | 324 | /* This will ensure the new "current" attempted to probe */ |
05c3e68f JH |
325 | current = eth_get_dev(); |
326 | } while (old_current != current); | |
327 | ||
60304592 | 328 | return ret; |
05c3e68f JH |
329 | } |
330 | ||
331 | void eth_halt(void) | |
332 | { | |
333 | struct udevice *current; | |
334 | struct eth_device_priv *priv; | |
335 | ||
336 | current = eth_get_dev(); | |
337 | if (!current || !device_active(current)) | |
338 | return; | |
339 | ||
340 | eth_get_ops(current)->stop(current); | |
341 | priv = current->uclass_priv; | |
342 | priv->state = ETH_STATE_PASSIVE; | |
343 | } | |
344 | ||
eaa8a195 BN |
345 | int eth_is_active(struct udevice *dev) |
346 | { | |
347 | struct eth_device_priv *priv; | |
348 | ||
349 | if (!dev || !device_active(dev)) | |
350 | return 0; | |
351 | ||
352 | priv = dev_get_uclass_priv(dev); | |
353 | return priv->state == ETH_STATE_ACTIVE; | |
354 | } | |
355 | ||
05c3e68f JH |
356 | int eth_send(void *packet, int length) |
357 | { | |
358 | struct udevice *current; | |
60304592 | 359 | int ret; |
05c3e68f JH |
360 | |
361 | current = eth_get_dev(); | |
362 | if (!current) | |
363 | return -ENODEV; | |
364 | ||
365 | if (!device_active(current)) | |
366 | return -EINVAL; | |
367 | ||
60304592 JH |
368 | ret = eth_get_ops(current)->send(current, packet, length); |
369 | if (ret < 0) { | |
370 | /* We cannot completely return the error at present */ | |
371 | debug("%s: send() returned error %d\n", __func__, ret); | |
372 | } | |
373 | return ret; | |
05c3e68f JH |
374 | } |
375 | ||
376 | int eth_rx(void) | |
377 | { | |
378 | struct udevice *current; | |
17591405 | 379 | uchar *packet; |
a1ca92ea | 380 | int flags; |
17591405 JH |
381 | int ret; |
382 | int i; | |
05c3e68f JH |
383 | |
384 | current = eth_get_dev(); | |
385 | if (!current) | |
386 | return -ENODEV; | |
387 | ||
388 | if (!device_active(current)) | |
389 | return -EINVAL; | |
390 | ||
17591405 | 391 | /* Process up to 32 packets at one time */ |
a1ca92ea | 392 | flags = ETH_RECV_CHECK_DEVICE; |
17591405 | 393 | for (i = 0; i < 32; i++) { |
a1ca92ea SG |
394 | ret = eth_get_ops(current)->recv(current, flags, &packet); |
395 | flags = 0; | |
17591405 JH |
396 | if (ret > 0) |
397 | net_process_received_packet(packet, ret); | |
63c9729a JH |
398 | if (ret >= 0 && eth_get_ops(current)->free_pkt) |
399 | eth_get_ops(current)->free_pkt(current, packet, ret); | |
400 | if (ret <= 0) | |
17591405 JH |
401 | break; |
402 | } | |
403 | if (ret == -EAGAIN) | |
404 | ret = 0; | |
60304592 JH |
405 | if (ret < 0) { |
406 | /* We cannot completely return the error at present */ | |
407 | debug("%s: recv() returned error %d\n", __func__, ret); | |
408 | } | |
17591405 | 409 | return ret; |
05c3e68f JH |
410 | } |
411 | ||
05c3e68f JH |
412 | int eth_initialize(void) |
413 | { | |
414 | int num_devices = 0; | |
415 | struct udevice *dev; | |
416 | ||
3bc42700 | 417 | eth_common_init(); |
05c3e68f JH |
418 | |
419 | /* | |
420 | * Devices need to write the hwaddr even if not started so that Linux | |
421 | * will have access to the hwaddr that u-boot stored for the device. | |
422 | * This is accomplished by attempting to probe each device and calling | |
423 | * their write_hwaddr() operation. | |
424 | */ | |
425 | uclass_first_device(UCLASS_ETH, &dev); | |
426 | if (!dev) { | |
427 | printf("No ethernet found.\n"); | |
428 | bootstage_error(BOOTSTAGE_ID_NET_ETH_START); | |
429 | } else { | |
6536b9bb JH |
430 | char *ethprime = getenv("ethprime"); |
431 | struct udevice *prime_dev = NULL; | |
432 | ||
433 | if (ethprime) | |
434 | prime_dev = eth_get_dev_by_name(ethprime); | |
435 | if (prime_dev) { | |
436 | eth_set_dev(prime_dev); | |
437 | eth_current_changed(); | |
438 | } else { | |
439 | eth_set_dev(NULL); | |
440 | } | |
441 | ||
05c3e68f JH |
442 | bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT); |
443 | do { | |
444 | if (num_devices) | |
445 | printf(", "); | |
446 | ||
447 | printf("eth%d: %s", dev->seq, dev->name); | |
448 | ||
6536b9bb JH |
449 | if (ethprime && dev == prime_dev) |
450 | printf(" [PRIME]"); | |
451 | ||
05c3e68f JH |
452 | eth_write_hwaddr(dev); |
453 | ||
454 | uclass_next_device(&dev); | |
455 | num_devices++; | |
456 | } while (dev); | |
457 | ||
458 | putc('\n'); | |
459 | } | |
460 | ||
461 | return num_devices; | |
462 | } | |
463 | ||
464 | static int eth_post_bind(struct udevice *dev) | |
465 | { | |
466 | if (strchr(dev->name, ' ')) { | |
467 | printf("\nError: eth device name \"%s\" has a space!\n", | |
468 | dev->name); | |
469 | return -EINVAL; | |
470 | } | |
471 | ||
472 | return 0; | |
473 | } | |
474 | ||
475 | static int eth_pre_unbind(struct udevice *dev) | |
476 | { | |
477 | /* Don't hang onto a pointer that is going away */ | |
478 | if (dev == eth_get_uclass_priv()->current) | |
479 | eth_set_dev(NULL); | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
484 | static int eth_post_probe(struct udevice *dev) | |
485 | { | |
486 | struct eth_device_priv *priv = dev->uclass_priv; | |
487 | struct eth_pdata *pdata = dev->platdata; | |
488 | unsigned char env_enetaddr[6]; | |
489 | ||
94067580 MS |
490 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) |
491 | struct eth_ops *ops = eth_get_ops(dev); | |
492 | static int reloc_done; | |
493 | ||
494 | if (!reloc_done) { | |
495 | if (ops->start) | |
496 | ops->start += gd->reloc_off; | |
497 | if (ops->send) | |
498 | ops->send += gd->reloc_off; | |
499 | if (ops->recv) | |
500 | ops->recv += gd->reloc_off; | |
501 | if (ops->free_pkt) | |
502 | ops->free_pkt += gd->reloc_off; | |
503 | if (ops->stop) | |
504 | ops->stop += gd->reloc_off; | |
505 | #ifdef CONFIG_MCAST_TFTP | |
506 | if (ops->mcast) | |
507 | ops->mcast += gd->reloc_off; | |
508 | #endif | |
509 | if (ops->write_hwaddr) | |
510 | ops->write_hwaddr += gd->reloc_off; | |
511 | if (ops->read_rom_hwaddr) | |
512 | ops->read_rom_hwaddr += gd->reloc_off; | |
513 | ||
514 | reloc_done++; | |
515 | } | |
516 | #endif | |
517 | ||
05c3e68f JH |
518 | priv->state = ETH_STATE_INIT; |
519 | ||
520 | /* Check if the device has a MAC address in ROM */ | |
521 | if (eth_get_ops(dev)->read_rom_hwaddr) | |
522 | eth_get_ops(dev)->read_rom_hwaddr(dev); | |
523 | ||
524 | eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr); | |
0adb5b76 JH |
525 | if (!is_zero_ethaddr(env_enetaddr)) { |
526 | if (!is_zero_ethaddr(pdata->enetaddr) && | |
05c3e68f JH |
527 | memcmp(pdata->enetaddr, env_enetaddr, 6)) { |
528 | printf("\nWarning: %s MAC addresses don't match:\n", | |
529 | dev->name); | |
530 | printf("Address in SROM is %pM\n", | |
531 | pdata->enetaddr); | |
532 | printf("Address in environment is %pM\n", | |
533 | env_enetaddr); | |
534 | } | |
535 | ||
536 | /* Override the ROM MAC address */ | |
537 | memcpy(pdata->enetaddr, env_enetaddr, 6); | |
0adb5b76 | 538 | } else if (is_valid_ethaddr(pdata->enetaddr)) { |
05c3e68f JH |
539 | eth_setenv_enetaddr_by_index("eth", dev->seq, pdata->enetaddr); |
540 | printf("\nWarning: %s using MAC address from ROM\n", | |
541 | dev->name); | |
0adb5b76 | 542 | } else if (is_zero_ethaddr(pdata->enetaddr)) { |
bef1014b JH |
543 | #ifdef CONFIG_NET_RANDOM_ETHADDR |
544 | net_random_ethaddr(pdata->enetaddr); | |
545 | printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", | |
546 | dev->name, dev->seq, pdata->enetaddr); | |
547 | #else | |
05c3e68f JH |
548 | printf("\nError: %s address not set.\n", |
549 | dev->name); | |
550 | return -EINVAL; | |
bef1014b | 551 | #endif |
05c3e68f JH |
552 | } |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | static int eth_pre_remove(struct udevice *dev) | |
558 | { | |
a16edabe BM |
559 | struct eth_pdata *pdata = dev->platdata; |
560 | ||
05c3e68f JH |
561 | eth_get_ops(dev)->stop(dev); |
562 | ||
a16edabe BM |
563 | /* clear the MAC address */ |
564 | memset(pdata->enetaddr, 0, 6); | |
565 | ||
05c3e68f JH |
566 | return 0; |
567 | } | |
568 | ||
569 | UCLASS_DRIVER(eth) = { | |
570 | .name = "eth", | |
571 | .id = UCLASS_ETH, | |
572 | .post_bind = eth_post_bind, | |
573 | .pre_unbind = eth_pre_unbind, | |
574 | .post_probe = eth_post_probe, | |
575 | .pre_remove = eth_pre_remove, | |
576 | .priv_auto_alloc_size = sizeof(struct eth_uclass_priv), | |
577 | .per_device_auto_alloc_size = sizeof(struct eth_device_priv), | |
e58780dc | 578 | .flags = DM_UC_FLAG_SEQ_ALIAS, |
05c3e68f | 579 | }; |
eaa8a195 | 580 | #endif /* #ifdef CONFIG_DM_ETH */ |
05c3e68f JH |
581 | |
582 | #ifndef CONFIG_DM_ETH | |
dd35479a | 583 | |
f85b6071 | 584 | #ifdef CONFIG_API |
f85b6071 RJ |
585 | static struct { |
586 | uchar data[PKTSIZE]; | |
587 | int length; | |
588 | } eth_rcv_bufs[PKTBUFSRX]; | |
589 | ||
66c7385a | 590 | static unsigned int eth_rcv_current, eth_rcv_last; |
f85b6071 RJ |
591 | #endif |
592 | ||
f8be7d65 JH |
593 | static struct eth_device *eth_devices; |
594 | struct eth_device *eth_current; | |
c609719b | 595 | |
84eb1fba JH |
596 | static void eth_set_current_to_next(void) |
597 | { | |
598 | eth_current = eth_current->next; | |
599 | } | |
600 | ||
e58780dc JH |
601 | static void eth_set_dev(struct eth_device *dev) |
602 | { | |
603 | eth_current = dev; | |
604 | } | |
605 | ||
d7fb9bcf | 606 | struct eth_device *eth_get_dev_by_name(const char *devname) |
63ff004c MB |
607 | { |
608 | struct eth_device *dev, *target_dev; | |
609 | ||
7e7f903f HR |
610 | BUG_ON(devname == NULL); |
611 | ||
63ff004c MB |
612 | if (!eth_devices) |
613 | return NULL; | |
614 | ||
615 | dev = eth_devices; | |
616 | target_dev = NULL; | |
617 | do { | |
618 | if (strcmp(devname, dev->name) == 0) { | |
619 | target_dev = dev; | |
620 | break; | |
621 | } | |
622 | dev = dev->next; | |
623 | } while (dev != eth_devices); | |
624 | ||
625 | return target_dev; | |
626 | } | |
627 | ||
9e56986a AF |
628 | struct eth_device *eth_get_dev_by_index(int index) |
629 | { | |
630 | struct eth_device *dev, *target_dev; | |
9e56986a AF |
631 | |
632 | if (!eth_devices) | |
633 | return NULL; | |
634 | ||
635 | dev = eth_devices; | |
636 | target_dev = NULL; | |
637 | do { | |
fea7dcae | 638 | if (dev->index == index) { |
9e56986a AF |
639 | target_dev = dev; |
640 | break; | |
641 | } | |
642 | dev = dev->next; | |
9e56986a AF |
643 | } while (dev != eth_devices); |
644 | ||
645 | return target_dev; | |
646 | } | |
647 | ||
66c7385a | 648 | int eth_get_dev_index(void) |
c609719b | 649 | { |
66c7385a | 650 | if (!eth_current) |
fea7dcae | 651 | return -1; |
c609719b | 652 | |
fea7dcae | 653 | return eth_current->index; |
c609719b WD |
654 | } |
655 | ||
6e0d26c0 JH |
656 | static int on_ethaddr(const char *name, const char *value, enum env_op op, |
657 | int flags) | |
658 | { | |
659 | int index; | |
660 | struct eth_device *dev; | |
661 | ||
662 | if (!eth_devices) | |
663 | return 0; | |
664 | ||
665 | /* look for an index after "eth" */ | |
666 | index = simple_strtoul(name + 3, NULL, 10); | |
667 | ||
668 | dev = eth_devices; | |
669 | do { | |
670 | if (dev->index == index) { | |
671 | switch (op) { | |
672 | case env_op_create: | |
673 | case env_op_overwrite: | |
674 | eth_parse_enetaddr(value, dev->enetaddr); | |
675 | break; | |
676 | case env_op_delete: | |
677 | memset(dev->enetaddr, 0, 6); | |
678 | } | |
679 | } | |
7aba0f2c | 680 | dev = dev->next; |
6e0d26c0 JH |
681 | } while (dev != eth_devices); |
682 | ||
683 | return 0; | |
684 | } | |
685 | U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr); | |
686 | ||
7616e785 SG |
687 | int eth_write_hwaddr(struct eth_device *dev, const char *base_name, |
688 | int eth_number) | |
689 | { | |
690 | unsigned char env_enetaddr[6]; | |
691 | int ret = 0; | |
692 | ||
69376644 | 693 | eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr); |
7616e785 | 694 | |
0adb5b76 JH |
695 | if (!is_zero_ethaddr(env_enetaddr)) { |
696 | if (!is_zero_ethaddr(dev->enetaddr) && | |
4c7c65af | 697 | memcmp(dev->enetaddr, env_enetaddr, 6)) { |
7616e785 | 698 | printf("\nWarning: %s MAC addresses don't match:\n", |
ff819a3a | 699 | dev->name); |
7616e785 | 700 | printf("Address in SROM is %pM\n", |
ff819a3a | 701 | dev->enetaddr); |
7616e785 | 702 | printf("Address in environment is %pM\n", |
ff819a3a | 703 | env_enetaddr); |
7616e785 SG |
704 | } |
705 | ||
706 | memcpy(dev->enetaddr, env_enetaddr, 6); | |
0adb5b76 | 707 | } else if (is_valid_ethaddr(dev->enetaddr)) { |
c88ef3c1 RH |
708 | eth_setenv_enetaddr_by_index(base_name, eth_number, |
709 | dev->enetaddr); | |
0adb5b76 | 710 | } else if (is_zero_ethaddr(dev->enetaddr)) { |
bef1014b JH |
711 | #ifdef CONFIG_NET_RANDOM_ETHADDR |
712 | net_random_ethaddr(dev->enetaddr); | |
713 | printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", | |
714 | dev->name, eth_number, dev->enetaddr); | |
715 | #else | |
75d9a45c PM |
716 | printf("\nError: %s address not set.\n", |
717 | dev->name); | |
718 | return -EINVAL; | |
bef1014b | 719 | #endif |
7616e785 SG |
720 | } |
721 | ||
75d9a45c | 722 | if (dev->write_hwaddr && !eth_mac_skip(eth_number)) { |
0adb5b76 | 723 | if (!is_valid_ethaddr(dev->enetaddr)) { |
75d9a45c | 724 | printf("\nError: %s address %pM illegal value\n", |
ff819a3a | 725 | dev->name, dev->enetaddr); |
75d9a45c PM |
726 | return -EINVAL; |
727 | } | |
460f949f | 728 | |
7616e785 | 729 | ret = dev->write_hwaddr(dev); |
75d9a45c | 730 | if (ret) |
ff819a3a JH |
731 | printf("\nWarning: %s failed to set MAC address\n", |
732 | dev->name); | |
460f949f | 733 | } |
7616e785 SG |
734 | |
735 | return ret; | |
736 | } | |
737 | ||
89d48367 SG |
738 | int eth_register(struct eth_device *dev) |
739 | { | |
740 | struct eth_device *d; | |
66c7385a | 741 | static int index; |
58c583b6 | 742 | |
f6add132 | 743 | assert(strlen(dev->name) < sizeof(dev->name)); |
58c583b6 | 744 | |
89d48367 | 745 | if (!eth_devices) { |
ff819a3a JH |
746 | eth_devices = dev; |
747 | eth_current = dev; | |
89d48367 | 748 | eth_current_changed(); |
c609719b | 749 | } else { |
66c7385a | 750 | for (d = eth_devices; d->next != eth_devices; d = d->next) |
aba4b69d | 751 | ; |
c609719b WD |
752 | d->next = dev; |
753 | } | |
754 | ||
755 | dev->state = ETH_STATE_INIT; | |
756 | dev->next = eth_devices; | |
fea7dcae | 757 | dev->index = index++; |
c609719b WD |
758 | |
759 | return 0; | |
760 | } | |
761 | ||
e7e982d6 VP |
762 | int eth_unregister(struct eth_device *dev) |
763 | { | |
764 | struct eth_device *cur; | |
765 | ||
766 | /* No device */ | |
767 | if (!eth_devices) | |
05324a48 | 768 | return -ENODEV; |
e7e982d6 VP |
769 | |
770 | for (cur = eth_devices; cur->next != eth_devices && cur->next != dev; | |
771 | cur = cur->next) | |
772 | ; | |
773 | ||
774 | /* Device not found */ | |
775 | if (cur->next != dev) | |
05324a48 | 776 | return -ENODEV; |
e7e982d6 VP |
777 | |
778 | cur->next = dev->next; | |
779 | ||
780 | if (eth_devices == dev) | |
781 | eth_devices = dev->next == eth_devices ? NULL : dev->next; | |
782 | ||
783 | if (eth_current == dev) { | |
784 | eth_current = eth_devices; | |
785 | eth_current_changed(); | |
786 | } | |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
d2eaec60 | 791 | int eth_initialize(void) |
c609719b | 792 | { |
fea7dcae | 793 | int num_devices = 0; |
3bc42700 | 794 | |
c609719b WD |
795 | eth_devices = NULL; |
796 | eth_current = NULL; | |
3bc42700 | 797 | eth_common_init(); |
818f91eb SG |
798 | /* |
799 | * If board-specific initialization exists, call it. | |
800 | * If not, call a CPU-specific one | |
801 | */ | |
802 | if (board_eth_init != __def_eth_init) { | |
803 | if (board_eth_init(gd->bd) < 0) | |
804 | printf("Board Net Initialization Failed\n"); | |
805 | } else if (cpu_eth_init != __def_eth_init) { | |
806 | if (cpu_eth_init(gd->bd) < 0) | |
807 | printf("CPU Net Initialization Failed\n"); | |
808 | } else { | |
809 | printf("Net Initialization Skipped\n"); | |
810 | } | |
d9785c14 | 811 | |
c609719b | 812 | if (!eth_devices) { |
66c7385a | 813 | puts("No ethernet found.\n"); |
770605e4 | 814 | bootstage_error(BOOTSTAGE_ID_NET_ETH_START); |
c609719b WD |
815 | } else { |
816 | struct eth_device *dev = eth_devices; | |
66c7385a | 817 | char *ethprime = getenv("ethprime"); |
c609719b | 818 | |
770605e4 | 819 | bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT); |
c609719b | 820 | do { |
fea7dcae | 821 | if (dev->index) |
66c7385a | 822 | puts(", "); |
c609719b WD |
823 | |
824 | printf("%s", dev->name); | |
825 | ||
66c7385a | 826 | if (ethprime && strcmp(dev->name, ethprime) == 0) { |
c609719b | 827 | eth_current = dev; |
66c7385a | 828 | puts(" [PRIME]"); |
c609719b WD |
829 | } |
830 | ||
1384f3bb | 831 | if (strchr(dev->name, ' ')) |
66c7385a JH |
832 | puts("\nWarning: eth device name has a space!" |
833 | "\n"); | |
1384f3bb | 834 | |
75d9a45c | 835 | eth_write_hwaddr(dev, "eth", dev->index); |
c609719b | 836 | |
c609719b | 837 | dev = dev->next; |
fea7dcae | 838 | num_devices++; |
66c7385a | 839 | } while (dev != eth_devices); |
c609719b | 840 | |
89d48367 | 841 | eth_current_changed(); |
66c7385a | 842 | putc('\n'); |
c609719b WD |
843 | } |
844 | ||
fea7dcae | 845 | return num_devices; |
c609719b WD |
846 | } |
847 | ||
53a5c424 DU |
848 | #ifdef CONFIG_MCAST_TFTP |
849 | /* Multicast. | |
850 | * mcast_addr: multicast ipaddr from which multicast Mac is made | |
85eb5caf | 851 | * join: 1=join, 0=leave. |
53a5c424 | 852 | */ |
049a95a7 | 853 | int eth_mcast_join(struct in_addr mcast_ip, int join) |
53a5c424 | 854 | { |
66c7385a | 855 | u8 mcast_mac[6]; |
85eb5caf | 856 | if (!eth_current || !eth_current->mcast) |
53a5c424 | 857 | return -1; |
049a95a7 JH |
858 | mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff; |
859 | mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff; | |
860 | mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f; | |
53a5c424 DU |
861 | mcast_mac[2] = 0x5e; |
862 | mcast_mac[1] = 0x0; | |
863 | mcast_mac[0] = 0x1; | |
864 | return eth_current->mcast(eth_current, mcast_mac, join); | |
865 | } | |
866 | ||
85eb5caf WD |
867 | /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c |
868 | * and this is the ethernet-crc method needed for TSEC -- and perhaps | |
53a5c424 DU |
869 | * some other adapter -- hash tables |
870 | */ | |
871 | #define CRCPOLY_LE 0xedb88320 | |
66c7385a | 872 | u32 ether_crc(size_t len, unsigned char const *p) |
53a5c424 DU |
873 | { |
874 | int i; | |
875 | u32 crc; | |
876 | crc = ~0; | |
877 | while (len--) { | |
878 | crc ^= *p++; | |
879 | for (i = 0; i < 8; i++) | |
880 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
881 | } | |
882 | /* an reverse the bits, cuz of way they arrive -- last-first */ | |
883 | crc = (crc >> 16) | (crc << 16); | |
884 | crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00); | |
885 | crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0); | |
886 | crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc); | |
887 | crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa); | |
888 | return crc; | |
889 | } | |
890 | ||
891 | #endif | |
892 | ||
c609719b | 893 | |
d2eaec60 | 894 | int eth_init(void) |
c609719b | 895 | { |
6e0d26c0 | 896 | struct eth_device *old_current; |
c609719b | 897 | |
6bc11388 | 898 | if (!eth_current) { |
66c7385a | 899 | puts("No ethernet found.\n"); |
05324a48 | 900 | return -ENODEV; |
6bc11388 | 901 | } |
c609719b WD |
902 | |
903 | old_current = eth_current; | |
904 | do { | |
0ebf04c6 | 905 | debug("Trying %s\n", eth_current->name); |
c609719b | 906 | |
d2eaec60 | 907 | if (eth_current->init(eth_current, gd->bd) >= 0) { |
c609719b WD |
908 | eth_current->state = ETH_STATE_ACTIVE; |
909 | ||
505be87a | 910 | return 0; |
c609719b | 911 | } |
0ebf04c6 | 912 | debug("FAIL\n"); |
c609719b WD |
913 | |
914 | eth_try_another(0); | |
915 | } while (old_current != eth_current); | |
916 | ||
05324a48 | 917 | return -ETIMEDOUT; |
c609719b WD |
918 | } |
919 | ||
920 | void eth_halt(void) | |
921 | { | |
922 | if (!eth_current) | |
923 | return; | |
924 | ||
925 | eth_current->halt(eth_current); | |
926 | ||
927 | eth_current->state = ETH_STATE_PASSIVE; | |
928 | } | |
929 | ||
eaa8a195 BN |
930 | int eth_is_active(struct eth_device *dev) |
931 | { | |
932 | return dev && dev->state == ETH_STATE_ACTIVE; | |
933 | } | |
934 | ||
db288a96 | 935 | int eth_send(void *packet, int length) |
c609719b WD |
936 | { |
937 | if (!eth_current) | |
05324a48 | 938 | return -ENODEV; |
c609719b WD |
939 | |
940 | return eth_current->send(eth_current, packet, length); | |
941 | } | |
942 | ||
943 | int eth_rx(void) | |
944 | { | |
945 | if (!eth_current) | |
05324a48 | 946 | return -ENODEV; |
c609719b WD |
947 | |
948 | return eth_current->recv(eth_current); | |
949 | } | |
05c3e68f | 950 | #endif /* ifndef CONFIG_DM_ETH */ |
c609719b | 951 | |
f85b6071 | 952 | #ifdef CONFIG_API |
db288a96 | 953 | static void eth_save_packet(void *packet, int length) |
f85b6071 | 954 | { |
db288a96 | 955 | char *p = packet; |
f85b6071 RJ |
956 | int i; |
957 | ||
958 | if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current) | |
959 | return; | |
960 | ||
961 | if (PKTSIZE < length) | |
962 | return; | |
963 | ||
964 | for (i = 0; i < length; i++) | |
965 | eth_rcv_bufs[eth_rcv_last].data[i] = p[i]; | |
966 | ||
967 | eth_rcv_bufs[eth_rcv_last].length = length; | |
968 | eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX; | |
969 | } | |
970 | ||
db288a96 | 971 | int eth_receive(void *packet, int length) |
f85b6071 | 972 | { |
db288a96 | 973 | char *p = packet; |
f85b6071 RJ |
974 | void *pp = push_packet; |
975 | int i; | |
976 | ||
977 | if (eth_rcv_current == eth_rcv_last) { | |
978 | push_packet = eth_save_packet; | |
979 | eth_rx(); | |
980 | push_packet = pp; | |
981 | ||
982 | if (eth_rcv_current == eth_rcv_last) | |
983 | return -1; | |
984 | } | |
985 | ||
46c07bcf | 986 | length = min(eth_rcv_bufs[eth_rcv_current].length, length); |
f85b6071 RJ |
987 | |
988 | for (i = 0; i < length; i++) | |
989 | p[i] = eth_rcv_bufs[eth_rcv_current].data[i]; | |
990 | ||
991 | eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX; | |
992 | return length; | |
993 | } | |
994 | #endif /* CONFIG_API */ | |
995 | ||
84eb1fba JH |
996 | static void eth_current_changed(void) |
997 | { | |
998 | char *act = getenv("ethact"); | |
a671c4f2 BM |
999 | char *ethrotate; |
1000 | ||
1001 | /* | |
1002 | * The call to eth_get_dev() below has a side effect of rotating | |
1003 | * ethernet device if uc_priv->current == NULL. This is not what | |
1004 | * we want when 'ethrotate' variable is 'no'. | |
1005 | */ | |
1006 | ethrotate = getenv("ethrotate"); | |
1007 | if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0)) | |
1008 | return; | |
1009 | ||
84eb1fba JH |
1010 | /* update current ethernet name */ |
1011 | if (eth_get_dev()) { | |
1012 | if (act == NULL || strcmp(act, eth_get_name()) != 0) | |
1013 | setenv("ethact", eth_get_name()); | |
1014 | } | |
1015 | /* | |
1016 | * remove the variable completely if there is no active | |
1017 | * interface | |
1018 | */ | |
1019 | else if (act != NULL) | |
1020 | setenv("ethact", NULL); | |
1021 | } | |
1022 | ||
c609719b WD |
1023 | void eth_try_another(int first_restart) |
1024 | { | |
05c3e68f | 1025 | static void *first_failed; |
c650e1be | 1026 | char *ethrotate; |
e1692577 MF |
1027 | |
1028 | /* | |
1029 | * Do not rotate between network interfaces when | |
1030 | * 'ethrotate' variable is set to 'no'. | |
1031 | */ | |
66c7385a JH |
1032 | ethrotate = getenv("ethrotate"); |
1033 | if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0)) | |
e1692577 | 1034 | return; |
c609719b | 1035 | |
84eb1fba | 1036 | if (!eth_get_dev()) |
c609719b WD |
1037 | return; |
1038 | ||
66c7385a | 1039 | if (first_restart) |
84eb1fba | 1040 | first_failed = eth_get_dev(); |
c609719b | 1041 | |
84eb1fba | 1042 | eth_set_current_to_next(); |
c609719b | 1043 | |
89d48367 | 1044 | eth_current_changed(); |
a3d991bd | 1045 | |
84eb1fba | 1046 | if (first_failed == eth_get_dev()) |
bc0571fc | 1047 | net_restart_wrap = 1; |
c609719b WD |
1048 | } |
1049 | ||
a3d991bd WD |
1050 | void eth_set_current(void) |
1051 | { | |
66c7385a JH |
1052 | static char *act; |
1053 | static int env_changed_id; | |
2f70c49e | 1054 | int env_id; |
a3d991bd | 1055 | |
2f70c49e HS |
1056 | env_id = get_env_id(); |
1057 | if ((act == NULL) || (env_changed_id != env_id)) { | |
1058 | act = getenv("ethact"); | |
1059 | env_changed_id = env_id; | |
1060 | } | |
6536b9bb JH |
1061 | |
1062 | if (act == NULL) { | |
1063 | char *ethprime = getenv("ethprime"); | |
1064 | void *dev = NULL; | |
1065 | ||
1066 | if (ethprime) | |
1067 | dev = eth_get_dev_by_name(ethprime); | |
1068 | if (dev) | |
1069 | eth_set_dev(dev); | |
1070 | else | |
1071 | eth_set_dev(NULL); | |
1072 | } else { | |
e58780dc | 1073 | eth_set_dev(eth_get_dev_by_name(act)); |
6536b9bb | 1074 | } |
a3d991bd | 1075 | |
89d48367 | 1076 | eth_current_changed(); |
a3d991bd | 1077 | } |
a3d991bd | 1078 | |
84eb1fba | 1079 | const char *eth_get_name(void) |
5bb226e8 | 1080 | { |
84eb1fba | 1081 | return eth_get_dev() ? eth_get_dev()->name : "unknown"; |
5bb226e8 | 1082 | } |