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Commit | Line | Data |
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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> |
c609719b | 19 | |
d2eaec60 JH |
20 | DECLARE_GLOBAL_DATA_PTR; |
21 | ||
3f6e6993 MF |
22 | void eth_parse_enetaddr(const char *addr, uchar *enetaddr) |
23 | { | |
24 | char *end; | |
25 | int i; | |
26 | ||
27 | for (i = 0; i < 6; ++i) { | |
28 | enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0; | |
29 | if (addr) | |
30 | addr = (*end) ? end + 1 : end; | |
31 | } | |
32 | } | |
33 | ||
34 | int eth_getenv_enetaddr(char *name, uchar *enetaddr) | |
35 | { | |
36 | eth_parse_enetaddr(getenv(name), enetaddr); | |
0adb5b76 | 37 | return is_valid_ethaddr(enetaddr); |
3f6e6993 MF |
38 | } |
39 | ||
40 | int eth_setenv_enetaddr(char *name, const uchar *enetaddr) | |
41 | { | |
42 | char buf[20]; | |
43 | ||
44 | sprintf(buf, "%pM", enetaddr); | |
45 | ||
46 | return setenv(name, buf); | |
47 | } | |
86848a74 | 48 | |
7616e785 SG |
49 | int eth_getenv_enetaddr_by_index(const char *base_name, int index, |
50 | uchar *enetaddr) | |
86848a74 MF |
51 | { |
52 | char enetvar[32]; | |
7616e785 | 53 | sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index); |
86848a74 MF |
54 | return eth_getenv_enetaddr(enetvar, enetaddr); |
55 | } | |
3f6e6993 | 56 | |
154177e1 | 57 | static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index, |
c88ef3c1 RH |
58 | uchar *enetaddr) |
59 | { | |
60 | char enetvar[32]; | |
61 | sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index); | |
62 | return eth_setenv_enetaddr(enetvar, enetaddr); | |
63 | } | |
64 | ||
ecee9324 BW |
65 | static int eth_mac_skip(int index) |
66 | { | |
67 | char enetvar[15]; | |
68 | char *skip_state; | |
ff819a3a | 69 | |
ecee9324 | 70 | sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index); |
ff819a3a JH |
71 | skip_state = getenv(enetvar); |
72 | return skip_state != NULL; | |
ecee9324 BW |
73 | } |
74 | ||
84eb1fba JH |
75 | static void eth_current_changed(void); |
76 | ||
3bc42700 SG |
77 | /* |
78 | * CPU and board-specific Ethernet initializations. Aliased function | |
79 | * signals caller to move on | |
80 | */ | |
81 | static int __def_eth_init(bd_t *bis) | |
82 | { | |
83 | return -1; | |
84 | } | |
85 | int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init"))); | |
86 | int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init"))); | |
87 | ||
88 | static void eth_common_init(void) | |
89 | { | |
90 | bootstage_mark(BOOTSTAGE_ID_NET_ETH_START); | |
91 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB) | |
92 | miiphy_init(); | |
93 | #endif | |
94 | ||
95 | #ifdef CONFIG_PHYLIB | |
96 | phy_init(); | |
97 | #endif | |
98 | ||
3bc42700 SG |
99 | /* |
100 | * If board-specific initialization exists, call it. | |
101 | * If not, call a CPU-specific one | |
102 | */ | |
103 | if (board_eth_init != __def_eth_init) { | |
104 | if (board_eth_init(gd->bd) < 0) | |
105 | printf("Board Net Initialization Failed\n"); | |
106 | } else if (cpu_eth_init != __def_eth_init) { | |
107 | if (cpu_eth_init(gd->bd) < 0) | |
108 | printf("CPU Net Initialization Failed\n"); | |
109 | } else { | |
110 | printf("Net Initialization Skipped\n"); | |
111 | } | |
112 | } | |
113 | ||
05c3e68f JH |
114 | #ifdef CONFIG_DM_ETH |
115 | /** | |
116 | * struct eth_device_priv - private structure for each Ethernet device | |
117 | * | |
118 | * @state: The state of the Ethernet MAC driver (defined by enum eth_state_t) | |
119 | */ | |
120 | struct eth_device_priv { | |
121 | enum eth_state_t state; | |
122 | }; | |
123 | ||
124 | /** | |
125 | * struct eth_uclass_priv - The structure attached to the uclass itself | |
126 | * | |
127 | * @current: The Ethernet device that the network functions are using | |
128 | */ | |
129 | struct eth_uclass_priv { | |
130 | struct udevice *current; | |
131 | }; | |
132 | ||
60304592 JH |
133 | /* eth_errno - This stores the most recent failure code from DM functions */ |
134 | static int eth_errno; | |
135 | ||
05c3e68f JH |
136 | static struct eth_uclass_priv *eth_get_uclass_priv(void) |
137 | { | |
138 | struct uclass *uc; | |
139 | ||
140 | uclass_get(UCLASS_ETH, &uc); | |
141 | assert(uc); | |
142 | return uc->priv; | |
143 | } | |
144 | ||
145 | static void eth_set_current_to_next(void) | |
146 | { | |
147 | struct eth_uclass_priv *uc_priv; | |
148 | ||
149 | uc_priv = eth_get_uclass_priv(); | |
150 | if (uc_priv->current) | |
151 | uclass_next_device(&uc_priv->current); | |
152 | if (!uc_priv->current) | |
153 | uclass_first_device(UCLASS_ETH, &uc_priv->current); | |
154 | } | |
155 | ||
60304592 JH |
156 | /* |
157 | * Typically this will simply return the active device. | |
158 | * In the case where the most recent active device was unset, this will attempt | |
159 | * to return the first device. If that device doesn't exist or fails to probe, | |
160 | * this function will return NULL. | |
161 | */ | |
05c3e68f JH |
162 | struct udevice *eth_get_dev(void) |
163 | { | |
164 | struct eth_uclass_priv *uc_priv; | |
165 | ||
166 | uc_priv = eth_get_uclass_priv(); | |
167 | if (!uc_priv->current) | |
60304592 | 168 | eth_errno = uclass_first_device(UCLASS_ETH, |
05c3e68f JH |
169 | &uc_priv->current); |
170 | return uc_priv->current; | |
171 | } | |
172 | ||
60304592 JH |
173 | /* |
174 | * Typically this will just store a device pointer. | |
175 | * In case it was not probed, we will attempt to do so. | |
176 | * dev may be NULL to unset the active device. | |
177 | */ | |
05c3e68f JH |
178 | static void eth_set_dev(struct udevice *dev) |
179 | { | |
60304592 JH |
180 | if (dev && !device_active(dev)) |
181 | eth_errno = device_probe(dev); | |
05c3e68f JH |
182 | eth_get_uclass_priv()->current = dev; |
183 | } | |
184 | ||
e58780dc JH |
185 | /* |
186 | * Find the udevice that either has the name passed in as devname or has an | |
187 | * alias named devname. | |
188 | */ | |
189 | struct udevice *eth_get_dev_by_name(const char *devname) | |
190 | { | |
191 | int seq = -1; | |
192 | char *endp = NULL; | |
193 | const char *startp = NULL; | |
194 | struct udevice *it; | |
195 | struct uclass *uc; | |
196 | ||
197 | /* Must be longer than 3 to be an alias */ | |
198 | if (strlen(devname) > strlen("eth")) { | |
199 | startp = devname + strlen("eth"); | |
200 | seq = simple_strtoul(startp, &endp, 10); | |
201 | } | |
202 | ||
203 | uclass_get(UCLASS_ETH, &uc); | |
204 | uclass_foreach_dev(it, uc) { | |
60304592 JH |
205 | /* |
206 | * We need the seq to be valid, so try to probe it. | |
207 | * If the probe fails, the seq will not match since it will be | |
208 | * -1 instead of what we are looking for. | |
209 | * We don't care about errors from probe here. Either they won't | |
210 | * match an alias or it will match a literal name and we'll pick | |
211 | * up the error when we try to probe again in eth_set_dev(). | |
212 | */ | |
e58780dc JH |
213 | device_probe(it); |
214 | /* | |
215 | * Check for the name or the sequence number to match | |
216 | */ | |
217 | if (strcmp(it->name, devname) == 0 || | |
218 | (endp > startp && it->seq == seq)) | |
219 | return it; | |
220 | } | |
221 | ||
222 | return NULL; | |
223 | } | |
224 | ||
05c3e68f JH |
225 | unsigned char *eth_get_ethaddr(void) |
226 | { | |
227 | struct eth_pdata *pdata; | |
228 | ||
229 | if (eth_get_dev()) { | |
230 | pdata = eth_get_dev()->platdata; | |
231 | return pdata->enetaddr; | |
232 | } | |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
237 | /* Set active state without calling start on the driver */ | |
238 | int eth_init_state_only(void) | |
239 | { | |
240 | struct udevice *current; | |
241 | struct eth_device_priv *priv; | |
242 | ||
243 | current = eth_get_dev(); | |
244 | if (!current || !device_active(current)) | |
245 | return -EINVAL; | |
246 | ||
247 | priv = current->uclass_priv; | |
248 | priv->state = ETH_STATE_ACTIVE; | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | /* Set passive state without calling stop on the driver */ | |
254 | void eth_halt_state_only(void) | |
255 | { | |
256 | struct udevice *current; | |
257 | struct eth_device_priv *priv; | |
258 | ||
259 | current = eth_get_dev(); | |
260 | if (!current || !device_active(current)) | |
261 | return; | |
262 | ||
263 | priv = current->uclass_priv; | |
264 | priv->state = ETH_STATE_PASSIVE; | |
265 | } | |
266 | ||
267 | int eth_get_dev_index(void) | |
268 | { | |
269 | if (eth_get_dev()) | |
270 | return eth_get_dev()->seq; | |
271 | return -1; | |
272 | } | |
273 | ||
f566c994 JH |
274 | static int eth_write_hwaddr(struct udevice *dev) |
275 | { | |
276 | struct eth_pdata *pdata = dev->platdata; | |
277 | int ret = 0; | |
278 | ||
279 | if (!dev || !device_active(dev)) | |
280 | return -EINVAL; | |
281 | ||
282 | /* seq is valid since the device is active */ | |
283 | if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) { | |
284 | if (!is_valid_ethaddr(pdata->enetaddr)) { | |
285 | printf("\nError: %s address %pM illegal value\n", | |
286 | dev->name, pdata->enetaddr); | |
287 | return -EINVAL; | |
288 | } | |
289 | ||
290 | ret = eth_get_ops(dev)->write_hwaddr(dev); | |
291 | if (ret) | |
292 | printf("\nWarning: %s failed to set MAC address\n", | |
293 | dev->name); | |
294 | } | |
295 | ||
296 | return ret; | |
297 | } | |
298 | ||
6e0d26c0 JH |
299 | static int on_ethaddr(const char *name, const char *value, enum env_op op, |
300 | int flags) | |
301 | { | |
302 | int index; | |
303 | int retval; | |
304 | struct udevice *dev; | |
305 | ||
306 | /* look for an index after "eth" */ | |
307 | index = simple_strtoul(name + 3, NULL, 10); | |
308 | ||
309 | retval = uclass_find_device_by_seq(UCLASS_ETH, index, false, &dev); | |
310 | if (!retval) { | |
311 | struct eth_pdata *pdata = dev->platdata; | |
312 | switch (op) { | |
313 | case env_op_create: | |
314 | case env_op_overwrite: | |
315 | eth_parse_enetaddr(value, pdata->enetaddr); | |
316 | break; | |
317 | case env_op_delete: | |
318 | memset(pdata->enetaddr, 0, 6); | |
319 | } | |
320 | } | |
321 | ||
322 | return 0; | |
323 | } | |
324 | U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr); | |
325 | ||
05c3e68f JH |
326 | int eth_init(void) |
327 | { | |
328 | struct udevice *current; | |
329 | struct udevice *old_current; | |
60304592 | 330 | int ret = -ENODEV; |
05c3e68f JH |
331 | |
332 | current = eth_get_dev(); | |
333 | if (!current) { | |
334 | printf("No ethernet found.\n"); | |
335 | return -ENODEV; | |
336 | } | |
337 | ||
338 | old_current = current; | |
339 | do { | |
340 | debug("Trying %s\n", current->name); | |
341 | ||
342 | if (device_active(current)) { | |
60304592 JH |
343 | ret = eth_get_ops(current)->start(current); |
344 | if (ret >= 0) { | |
05c3e68f JH |
345 | struct eth_device_priv *priv = |
346 | current->uclass_priv; | |
347 | ||
348 | priv->state = ETH_STATE_ACTIVE; | |
349 | return 0; | |
350 | } | |
ff819a3a | 351 | } else { |
60304592 | 352 | ret = eth_errno; |
ff819a3a | 353 | } |
60304592 | 354 | |
05c3e68f JH |
355 | debug("FAIL\n"); |
356 | ||
60304592 JH |
357 | /* |
358 | * If ethrotate is enabled, this will change "current", | |
359 | * otherwise we will drop out of this while loop immediately | |
360 | */ | |
05c3e68f | 361 | eth_try_another(0); |
60304592 | 362 | /* This will ensure the new "current" attempted to probe */ |
05c3e68f JH |
363 | current = eth_get_dev(); |
364 | } while (old_current != current); | |
365 | ||
60304592 | 366 | return ret; |
05c3e68f JH |
367 | } |
368 | ||
369 | void eth_halt(void) | |
370 | { | |
371 | struct udevice *current; | |
372 | struct eth_device_priv *priv; | |
373 | ||
374 | current = eth_get_dev(); | |
375 | if (!current || !device_active(current)) | |
376 | return; | |
377 | ||
378 | eth_get_ops(current)->stop(current); | |
379 | priv = current->uclass_priv; | |
380 | priv->state = ETH_STATE_PASSIVE; | |
381 | } | |
382 | ||
383 | int eth_send(void *packet, int length) | |
384 | { | |
385 | struct udevice *current; | |
60304592 | 386 | int ret; |
05c3e68f JH |
387 | |
388 | current = eth_get_dev(); | |
389 | if (!current) | |
390 | return -ENODEV; | |
391 | ||
392 | if (!device_active(current)) | |
393 | return -EINVAL; | |
394 | ||
60304592 JH |
395 | ret = eth_get_ops(current)->send(current, packet, length); |
396 | if (ret < 0) { | |
397 | /* We cannot completely return the error at present */ | |
398 | debug("%s: send() returned error %d\n", __func__, ret); | |
399 | } | |
400 | return ret; | |
05c3e68f JH |
401 | } |
402 | ||
403 | int eth_rx(void) | |
404 | { | |
405 | struct udevice *current; | |
17591405 JH |
406 | uchar *packet; |
407 | int ret; | |
408 | int i; | |
05c3e68f JH |
409 | |
410 | current = eth_get_dev(); | |
411 | if (!current) | |
412 | return -ENODEV; | |
413 | ||
414 | if (!device_active(current)) | |
415 | return -EINVAL; | |
416 | ||
17591405 JH |
417 | /* Process up to 32 packets at one time */ |
418 | for (i = 0; i < 32; i++) { | |
419 | ret = eth_get_ops(current)->recv(current, &packet); | |
420 | if (ret > 0) | |
421 | net_process_received_packet(packet, ret); | |
63c9729a JH |
422 | if (ret >= 0 && eth_get_ops(current)->free_pkt) |
423 | eth_get_ops(current)->free_pkt(current, packet, ret); | |
424 | if (ret <= 0) | |
17591405 JH |
425 | break; |
426 | } | |
427 | if (ret == -EAGAIN) | |
428 | ret = 0; | |
60304592 JH |
429 | if (ret < 0) { |
430 | /* We cannot completely return the error at present */ | |
431 | debug("%s: recv() returned error %d\n", __func__, ret); | |
432 | } | |
17591405 | 433 | return ret; |
05c3e68f JH |
434 | } |
435 | ||
05c3e68f JH |
436 | int eth_initialize(void) |
437 | { | |
438 | int num_devices = 0; | |
439 | struct udevice *dev; | |
440 | ||
3bc42700 | 441 | eth_common_init(); |
05c3e68f JH |
442 | |
443 | /* | |
444 | * Devices need to write the hwaddr even if not started so that Linux | |
445 | * will have access to the hwaddr that u-boot stored for the device. | |
446 | * This is accomplished by attempting to probe each device and calling | |
447 | * their write_hwaddr() operation. | |
448 | */ | |
449 | uclass_first_device(UCLASS_ETH, &dev); | |
450 | if (!dev) { | |
451 | printf("No ethernet found.\n"); | |
452 | bootstage_error(BOOTSTAGE_ID_NET_ETH_START); | |
453 | } else { | |
6536b9bb JH |
454 | char *ethprime = getenv("ethprime"); |
455 | struct udevice *prime_dev = NULL; | |
456 | ||
457 | if (ethprime) | |
458 | prime_dev = eth_get_dev_by_name(ethprime); | |
459 | if (prime_dev) { | |
460 | eth_set_dev(prime_dev); | |
461 | eth_current_changed(); | |
462 | } else { | |
463 | eth_set_dev(NULL); | |
464 | } | |
465 | ||
05c3e68f JH |
466 | bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT); |
467 | do { | |
468 | if (num_devices) | |
469 | printf(", "); | |
470 | ||
471 | printf("eth%d: %s", dev->seq, dev->name); | |
472 | ||
6536b9bb JH |
473 | if (ethprime && dev == prime_dev) |
474 | printf(" [PRIME]"); | |
475 | ||
05c3e68f JH |
476 | eth_write_hwaddr(dev); |
477 | ||
478 | uclass_next_device(&dev); | |
479 | num_devices++; | |
480 | } while (dev); | |
481 | ||
482 | putc('\n'); | |
483 | } | |
484 | ||
485 | return num_devices; | |
486 | } | |
487 | ||
488 | static int eth_post_bind(struct udevice *dev) | |
489 | { | |
490 | if (strchr(dev->name, ' ')) { | |
491 | printf("\nError: eth device name \"%s\" has a space!\n", | |
492 | dev->name); | |
493 | return -EINVAL; | |
494 | } | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | static int eth_pre_unbind(struct udevice *dev) | |
500 | { | |
501 | /* Don't hang onto a pointer that is going away */ | |
502 | if (dev == eth_get_uclass_priv()->current) | |
503 | eth_set_dev(NULL); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | static int eth_post_probe(struct udevice *dev) | |
509 | { | |
510 | struct eth_device_priv *priv = dev->uclass_priv; | |
511 | struct eth_pdata *pdata = dev->platdata; | |
512 | unsigned char env_enetaddr[6]; | |
513 | ||
514 | priv->state = ETH_STATE_INIT; | |
515 | ||
516 | /* Check if the device has a MAC address in ROM */ | |
517 | if (eth_get_ops(dev)->read_rom_hwaddr) | |
518 | eth_get_ops(dev)->read_rom_hwaddr(dev); | |
519 | ||
520 | eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr); | |
0adb5b76 JH |
521 | if (!is_zero_ethaddr(env_enetaddr)) { |
522 | if (!is_zero_ethaddr(pdata->enetaddr) && | |
05c3e68f JH |
523 | memcmp(pdata->enetaddr, env_enetaddr, 6)) { |
524 | printf("\nWarning: %s MAC addresses don't match:\n", | |
525 | dev->name); | |
526 | printf("Address in SROM is %pM\n", | |
527 | pdata->enetaddr); | |
528 | printf("Address in environment is %pM\n", | |
529 | env_enetaddr); | |
530 | } | |
531 | ||
532 | /* Override the ROM MAC address */ | |
533 | memcpy(pdata->enetaddr, env_enetaddr, 6); | |
0adb5b76 | 534 | } else if (is_valid_ethaddr(pdata->enetaddr)) { |
05c3e68f JH |
535 | eth_setenv_enetaddr_by_index("eth", dev->seq, pdata->enetaddr); |
536 | printf("\nWarning: %s using MAC address from ROM\n", | |
537 | dev->name); | |
0adb5b76 | 538 | } else if (is_zero_ethaddr(pdata->enetaddr)) { |
bef1014b JH |
539 | #ifdef CONFIG_NET_RANDOM_ETHADDR |
540 | net_random_ethaddr(pdata->enetaddr); | |
541 | printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", | |
542 | dev->name, dev->seq, pdata->enetaddr); | |
543 | #else | |
05c3e68f JH |
544 | printf("\nError: %s address not set.\n", |
545 | dev->name); | |
546 | return -EINVAL; | |
bef1014b | 547 | #endif |
05c3e68f JH |
548 | } |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static int eth_pre_remove(struct udevice *dev) | |
554 | { | |
555 | eth_get_ops(dev)->stop(dev); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
560 | UCLASS_DRIVER(eth) = { | |
561 | .name = "eth", | |
562 | .id = UCLASS_ETH, | |
563 | .post_bind = eth_post_bind, | |
564 | .pre_unbind = eth_pre_unbind, | |
565 | .post_probe = eth_post_probe, | |
566 | .pre_remove = eth_pre_remove, | |
567 | .priv_auto_alloc_size = sizeof(struct eth_uclass_priv), | |
568 | .per_device_auto_alloc_size = sizeof(struct eth_device_priv), | |
e58780dc | 569 | .flags = DM_UC_FLAG_SEQ_ALIAS, |
05c3e68f JH |
570 | }; |
571 | #endif | |
572 | ||
573 | #ifndef CONFIG_DM_ETH | |
dd35479a | 574 | |
f85b6071 | 575 | #ifdef CONFIG_API |
f85b6071 RJ |
576 | static struct { |
577 | uchar data[PKTSIZE]; | |
578 | int length; | |
579 | } eth_rcv_bufs[PKTBUFSRX]; | |
580 | ||
66c7385a | 581 | static unsigned int eth_rcv_current, eth_rcv_last; |
f85b6071 RJ |
582 | #endif |
583 | ||
f8be7d65 JH |
584 | static struct eth_device *eth_devices; |
585 | struct eth_device *eth_current; | |
c609719b | 586 | |
84eb1fba JH |
587 | static void eth_set_current_to_next(void) |
588 | { | |
589 | eth_current = eth_current->next; | |
590 | } | |
591 | ||
e58780dc JH |
592 | static void eth_set_dev(struct eth_device *dev) |
593 | { | |
594 | eth_current = dev; | |
595 | } | |
596 | ||
d7fb9bcf | 597 | struct eth_device *eth_get_dev_by_name(const char *devname) |
63ff004c MB |
598 | { |
599 | struct eth_device *dev, *target_dev; | |
600 | ||
7e7f903f HR |
601 | BUG_ON(devname == NULL); |
602 | ||
63ff004c MB |
603 | if (!eth_devices) |
604 | return NULL; | |
605 | ||
606 | dev = eth_devices; | |
607 | target_dev = NULL; | |
608 | do { | |
609 | if (strcmp(devname, dev->name) == 0) { | |
610 | target_dev = dev; | |
611 | break; | |
612 | } | |
613 | dev = dev->next; | |
614 | } while (dev != eth_devices); | |
615 | ||
616 | return target_dev; | |
617 | } | |
618 | ||
9e56986a AF |
619 | struct eth_device *eth_get_dev_by_index(int index) |
620 | { | |
621 | struct eth_device *dev, *target_dev; | |
9e56986a AF |
622 | |
623 | if (!eth_devices) | |
624 | return NULL; | |
625 | ||
626 | dev = eth_devices; | |
627 | target_dev = NULL; | |
628 | do { | |
fea7dcae | 629 | if (dev->index == index) { |
9e56986a AF |
630 | target_dev = dev; |
631 | break; | |
632 | } | |
633 | dev = dev->next; | |
9e56986a AF |
634 | } while (dev != eth_devices); |
635 | ||
636 | return target_dev; | |
637 | } | |
638 | ||
66c7385a | 639 | int eth_get_dev_index(void) |
c609719b | 640 | { |
66c7385a | 641 | if (!eth_current) |
fea7dcae | 642 | return -1; |
c609719b | 643 | |
fea7dcae | 644 | return eth_current->index; |
c609719b WD |
645 | } |
646 | ||
6e0d26c0 JH |
647 | static int on_ethaddr(const char *name, const char *value, enum env_op op, |
648 | int flags) | |
649 | { | |
650 | int index; | |
651 | struct eth_device *dev; | |
652 | ||
653 | if (!eth_devices) | |
654 | return 0; | |
655 | ||
656 | /* look for an index after "eth" */ | |
657 | index = simple_strtoul(name + 3, NULL, 10); | |
658 | ||
659 | dev = eth_devices; | |
660 | do { | |
661 | if (dev->index == index) { | |
662 | switch (op) { | |
663 | case env_op_create: | |
664 | case env_op_overwrite: | |
665 | eth_parse_enetaddr(value, dev->enetaddr); | |
666 | break; | |
667 | case env_op_delete: | |
668 | memset(dev->enetaddr, 0, 6); | |
669 | } | |
670 | } | |
671 | } while (dev != eth_devices); | |
672 | ||
673 | return 0; | |
674 | } | |
675 | U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr); | |
676 | ||
7616e785 SG |
677 | int eth_write_hwaddr(struct eth_device *dev, const char *base_name, |
678 | int eth_number) | |
679 | { | |
680 | unsigned char env_enetaddr[6]; | |
681 | int ret = 0; | |
682 | ||
69376644 | 683 | eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr); |
7616e785 | 684 | |
0adb5b76 JH |
685 | if (!is_zero_ethaddr(env_enetaddr)) { |
686 | if (!is_zero_ethaddr(dev->enetaddr) && | |
4c7c65af | 687 | memcmp(dev->enetaddr, env_enetaddr, 6)) { |
7616e785 | 688 | printf("\nWarning: %s MAC addresses don't match:\n", |
ff819a3a | 689 | dev->name); |
7616e785 | 690 | printf("Address in SROM is %pM\n", |
ff819a3a | 691 | dev->enetaddr); |
7616e785 | 692 | printf("Address in environment is %pM\n", |
ff819a3a | 693 | env_enetaddr); |
7616e785 SG |
694 | } |
695 | ||
696 | memcpy(dev->enetaddr, env_enetaddr, 6); | |
0adb5b76 | 697 | } else if (is_valid_ethaddr(dev->enetaddr)) { |
c88ef3c1 RH |
698 | eth_setenv_enetaddr_by_index(base_name, eth_number, |
699 | dev->enetaddr); | |
700 | printf("\nWarning: %s using MAC address from net device\n", | |
ff819a3a | 701 | dev->name); |
0adb5b76 | 702 | } else if (is_zero_ethaddr(dev->enetaddr)) { |
bef1014b JH |
703 | #ifdef CONFIG_NET_RANDOM_ETHADDR |
704 | net_random_ethaddr(dev->enetaddr); | |
705 | printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", | |
706 | dev->name, eth_number, dev->enetaddr); | |
707 | #else | |
75d9a45c PM |
708 | printf("\nError: %s address not set.\n", |
709 | dev->name); | |
710 | return -EINVAL; | |
bef1014b | 711 | #endif |
7616e785 SG |
712 | } |
713 | ||
75d9a45c | 714 | if (dev->write_hwaddr && !eth_mac_skip(eth_number)) { |
0adb5b76 | 715 | if (!is_valid_ethaddr(dev->enetaddr)) { |
75d9a45c | 716 | printf("\nError: %s address %pM illegal value\n", |
ff819a3a | 717 | dev->name, dev->enetaddr); |
75d9a45c PM |
718 | return -EINVAL; |
719 | } | |
460f949f | 720 | |
7616e785 | 721 | ret = dev->write_hwaddr(dev); |
75d9a45c | 722 | if (ret) |
ff819a3a JH |
723 | printf("\nWarning: %s failed to set MAC address\n", |
724 | dev->name); | |
460f949f | 725 | } |
7616e785 SG |
726 | |
727 | return ret; | |
728 | } | |
729 | ||
89d48367 SG |
730 | int eth_register(struct eth_device *dev) |
731 | { | |
732 | struct eth_device *d; | |
66c7385a | 733 | static int index; |
58c583b6 | 734 | |
f6add132 | 735 | assert(strlen(dev->name) < sizeof(dev->name)); |
58c583b6 | 736 | |
89d48367 | 737 | if (!eth_devices) { |
ff819a3a JH |
738 | eth_devices = dev; |
739 | eth_current = dev; | |
89d48367 | 740 | eth_current_changed(); |
c609719b | 741 | } else { |
66c7385a | 742 | for (d = eth_devices; d->next != eth_devices; d = d->next) |
aba4b69d | 743 | ; |
c609719b WD |
744 | d->next = dev; |
745 | } | |
746 | ||
747 | dev->state = ETH_STATE_INIT; | |
748 | dev->next = eth_devices; | |
fea7dcae | 749 | dev->index = index++; |
c609719b WD |
750 | |
751 | return 0; | |
752 | } | |
753 | ||
e7e982d6 VP |
754 | int eth_unregister(struct eth_device *dev) |
755 | { | |
756 | struct eth_device *cur; | |
757 | ||
758 | /* No device */ | |
759 | if (!eth_devices) | |
05324a48 | 760 | return -ENODEV; |
e7e982d6 VP |
761 | |
762 | for (cur = eth_devices; cur->next != eth_devices && cur->next != dev; | |
763 | cur = cur->next) | |
764 | ; | |
765 | ||
766 | /* Device not found */ | |
767 | if (cur->next != dev) | |
05324a48 | 768 | return -ENODEV; |
e7e982d6 VP |
769 | |
770 | cur->next = dev->next; | |
771 | ||
772 | if (eth_devices == dev) | |
773 | eth_devices = dev->next == eth_devices ? NULL : dev->next; | |
774 | ||
775 | if (eth_current == dev) { | |
776 | eth_current = eth_devices; | |
777 | eth_current_changed(); | |
778 | } | |
779 | ||
780 | return 0; | |
781 | } | |
782 | ||
d2eaec60 | 783 | int eth_initialize(void) |
c609719b | 784 | { |
fea7dcae | 785 | int num_devices = 0; |
3bc42700 | 786 | |
c609719b WD |
787 | eth_devices = NULL; |
788 | eth_current = NULL; | |
3bc42700 | 789 | eth_common_init(); |
d9785c14 | 790 | |
c609719b | 791 | if (!eth_devices) { |
66c7385a | 792 | puts("No ethernet found.\n"); |
770605e4 | 793 | bootstage_error(BOOTSTAGE_ID_NET_ETH_START); |
c609719b WD |
794 | } else { |
795 | struct eth_device *dev = eth_devices; | |
66c7385a | 796 | char *ethprime = getenv("ethprime"); |
c609719b | 797 | |
770605e4 | 798 | bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT); |
c609719b | 799 | do { |
fea7dcae | 800 | if (dev->index) |
66c7385a | 801 | puts(", "); |
c609719b WD |
802 | |
803 | printf("%s", dev->name); | |
804 | ||
66c7385a | 805 | if (ethprime && strcmp(dev->name, ethprime) == 0) { |
c609719b | 806 | eth_current = dev; |
66c7385a | 807 | puts(" [PRIME]"); |
c609719b WD |
808 | } |
809 | ||
1384f3bb | 810 | if (strchr(dev->name, ' ')) |
66c7385a JH |
811 | puts("\nWarning: eth device name has a space!" |
812 | "\n"); | |
1384f3bb | 813 | |
75d9a45c | 814 | eth_write_hwaddr(dev, "eth", dev->index); |
c609719b | 815 | |
c609719b | 816 | dev = dev->next; |
fea7dcae | 817 | num_devices++; |
66c7385a | 818 | } while (dev != eth_devices); |
c609719b | 819 | |
89d48367 | 820 | eth_current_changed(); |
66c7385a | 821 | putc('\n'); |
c609719b WD |
822 | } |
823 | ||
fea7dcae | 824 | return num_devices; |
c609719b WD |
825 | } |
826 | ||
53a5c424 DU |
827 | #ifdef CONFIG_MCAST_TFTP |
828 | /* Multicast. | |
829 | * mcast_addr: multicast ipaddr from which multicast Mac is made | |
85eb5caf | 830 | * join: 1=join, 0=leave. |
53a5c424 | 831 | */ |
049a95a7 | 832 | int eth_mcast_join(struct in_addr mcast_ip, int join) |
53a5c424 | 833 | { |
66c7385a | 834 | u8 mcast_mac[6]; |
85eb5caf | 835 | if (!eth_current || !eth_current->mcast) |
53a5c424 | 836 | return -1; |
049a95a7 JH |
837 | mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff; |
838 | mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff; | |
839 | mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f; | |
53a5c424 DU |
840 | mcast_mac[2] = 0x5e; |
841 | mcast_mac[1] = 0x0; | |
842 | mcast_mac[0] = 0x1; | |
843 | return eth_current->mcast(eth_current, mcast_mac, join); | |
844 | } | |
845 | ||
85eb5caf WD |
846 | /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c |
847 | * and this is the ethernet-crc method needed for TSEC -- and perhaps | |
53a5c424 DU |
848 | * some other adapter -- hash tables |
849 | */ | |
850 | #define CRCPOLY_LE 0xedb88320 | |
66c7385a | 851 | u32 ether_crc(size_t len, unsigned char const *p) |
53a5c424 DU |
852 | { |
853 | int i; | |
854 | u32 crc; | |
855 | crc = ~0; | |
856 | while (len--) { | |
857 | crc ^= *p++; | |
858 | for (i = 0; i < 8; i++) | |
859 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
860 | } | |
861 | /* an reverse the bits, cuz of way they arrive -- last-first */ | |
862 | crc = (crc >> 16) | (crc << 16); | |
863 | crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00); | |
864 | crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0); | |
865 | crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc); | |
866 | crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa); | |
867 | return crc; | |
868 | } | |
869 | ||
870 | #endif | |
871 | ||
c609719b | 872 | |
d2eaec60 | 873 | int eth_init(void) |
c609719b | 874 | { |
6e0d26c0 | 875 | struct eth_device *old_current; |
c609719b | 876 | |
6bc11388 | 877 | if (!eth_current) { |
66c7385a | 878 | puts("No ethernet found.\n"); |
05324a48 | 879 | return -ENODEV; |
6bc11388 | 880 | } |
c609719b WD |
881 | |
882 | old_current = eth_current; | |
883 | do { | |
0ebf04c6 | 884 | debug("Trying %s\n", eth_current->name); |
c609719b | 885 | |
d2eaec60 | 886 | if (eth_current->init(eth_current, gd->bd) >= 0) { |
c609719b WD |
887 | eth_current->state = ETH_STATE_ACTIVE; |
888 | ||
505be87a | 889 | return 0; |
c609719b | 890 | } |
0ebf04c6 | 891 | debug("FAIL\n"); |
c609719b WD |
892 | |
893 | eth_try_another(0); | |
894 | } while (old_current != eth_current); | |
895 | ||
05324a48 | 896 | return -ETIMEDOUT; |
c609719b WD |
897 | } |
898 | ||
899 | void eth_halt(void) | |
900 | { | |
901 | if (!eth_current) | |
902 | return; | |
903 | ||
904 | eth_current->halt(eth_current); | |
905 | ||
906 | eth_current->state = ETH_STATE_PASSIVE; | |
907 | } | |
908 | ||
db288a96 | 909 | int eth_send(void *packet, int length) |
c609719b WD |
910 | { |
911 | if (!eth_current) | |
05324a48 | 912 | return -ENODEV; |
c609719b WD |
913 | |
914 | return eth_current->send(eth_current, packet, length); | |
915 | } | |
916 | ||
917 | int eth_rx(void) | |
918 | { | |
919 | if (!eth_current) | |
05324a48 | 920 | return -ENODEV; |
c609719b WD |
921 | |
922 | return eth_current->recv(eth_current); | |
923 | } | |
05c3e68f | 924 | #endif /* ifndef CONFIG_DM_ETH */ |
c609719b | 925 | |
f85b6071 | 926 | #ifdef CONFIG_API |
db288a96 | 927 | static void eth_save_packet(void *packet, int length) |
f85b6071 | 928 | { |
db288a96 | 929 | char *p = packet; |
f85b6071 RJ |
930 | int i; |
931 | ||
932 | if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current) | |
933 | return; | |
934 | ||
935 | if (PKTSIZE < length) | |
936 | return; | |
937 | ||
938 | for (i = 0; i < length; i++) | |
939 | eth_rcv_bufs[eth_rcv_last].data[i] = p[i]; | |
940 | ||
941 | eth_rcv_bufs[eth_rcv_last].length = length; | |
942 | eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX; | |
943 | } | |
944 | ||
db288a96 | 945 | int eth_receive(void *packet, int length) |
f85b6071 | 946 | { |
db288a96 | 947 | char *p = packet; |
f85b6071 RJ |
948 | void *pp = push_packet; |
949 | int i; | |
950 | ||
951 | if (eth_rcv_current == eth_rcv_last) { | |
952 | push_packet = eth_save_packet; | |
953 | eth_rx(); | |
954 | push_packet = pp; | |
955 | ||
956 | if (eth_rcv_current == eth_rcv_last) | |
957 | return -1; | |
958 | } | |
959 | ||
46c07bcf | 960 | length = min(eth_rcv_bufs[eth_rcv_current].length, length); |
f85b6071 RJ |
961 | |
962 | for (i = 0; i < length; i++) | |
963 | p[i] = eth_rcv_bufs[eth_rcv_current].data[i]; | |
964 | ||
965 | eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX; | |
966 | return length; | |
967 | } | |
968 | #endif /* CONFIG_API */ | |
969 | ||
84eb1fba JH |
970 | static void eth_current_changed(void) |
971 | { | |
972 | char *act = getenv("ethact"); | |
973 | /* update current ethernet name */ | |
974 | if (eth_get_dev()) { | |
975 | if (act == NULL || strcmp(act, eth_get_name()) != 0) | |
976 | setenv("ethact", eth_get_name()); | |
977 | } | |
978 | /* | |
979 | * remove the variable completely if there is no active | |
980 | * interface | |
981 | */ | |
982 | else if (act != NULL) | |
983 | setenv("ethact", NULL); | |
984 | } | |
985 | ||
c609719b WD |
986 | void eth_try_another(int first_restart) |
987 | { | |
05c3e68f | 988 | static void *first_failed; |
c650e1be | 989 | char *ethrotate; |
e1692577 MF |
990 | |
991 | /* | |
992 | * Do not rotate between network interfaces when | |
993 | * 'ethrotate' variable is set to 'no'. | |
994 | */ | |
66c7385a JH |
995 | ethrotate = getenv("ethrotate"); |
996 | if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0)) | |
e1692577 | 997 | return; |
c609719b | 998 | |
84eb1fba | 999 | if (!eth_get_dev()) |
c609719b WD |
1000 | return; |
1001 | ||
66c7385a | 1002 | if (first_restart) |
84eb1fba | 1003 | first_failed = eth_get_dev(); |
c609719b | 1004 | |
84eb1fba | 1005 | eth_set_current_to_next(); |
c609719b | 1006 | |
89d48367 | 1007 | eth_current_changed(); |
a3d991bd | 1008 | |
84eb1fba | 1009 | if (first_failed == eth_get_dev()) |
bc0571fc | 1010 | net_restart_wrap = 1; |
c609719b WD |
1011 | } |
1012 | ||
a3d991bd WD |
1013 | void eth_set_current(void) |
1014 | { | |
66c7385a JH |
1015 | static char *act; |
1016 | static int env_changed_id; | |
2f70c49e | 1017 | int env_id; |
a3d991bd | 1018 | |
2f70c49e HS |
1019 | env_id = get_env_id(); |
1020 | if ((act == NULL) || (env_changed_id != env_id)) { | |
1021 | act = getenv("ethact"); | |
1022 | env_changed_id = env_id; | |
1023 | } | |
6536b9bb JH |
1024 | |
1025 | if (act == NULL) { | |
1026 | char *ethprime = getenv("ethprime"); | |
1027 | void *dev = NULL; | |
1028 | ||
1029 | if (ethprime) | |
1030 | dev = eth_get_dev_by_name(ethprime); | |
1031 | if (dev) | |
1032 | eth_set_dev(dev); | |
1033 | else | |
1034 | eth_set_dev(NULL); | |
1035 | } else { | |
e58780dc | 1036 | eth_set_dev(eth_get_dev_by_name(act)); |
6536b9bb | 1037 | } |
a3d991bd | 1038 | |
89d48367 | 1039 | eth_current_changed(); |
a3d991bd | 1040 | } |
a3d991bd | 1041 | |
84eb1fba | 1042 | const char *eth_get_name(void) |
5bb226e8 | 1043 | { |
84eb1fba | 1044 | return eth_get_dev() ? eth_get_dev()->name : "unknown"; |
5bb226e8 | 1045 | } |