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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 { | |
d8f79afa | 110 | #ifndef CONFIG_DM_ETH |
3bc42700 | 111 | printf("Net Initialization Skipped\n"); |
d8f79afa | 112 | #endif |
3bc42700 SG |
113 | } |
114 | } | |
115 | ||
05c3e68f JH |
116 | #ifdef CONFIG_DM_ETH |
117 | /** | |
118 | * struct eth_device_priv - private structure for each Ethernet device | |
119 | * | |
120 | * @state: The state of the Ethernet MAC driver (defined by enum eth_state_t) | |
121 | */ | |
122 | struct eth_device_priv { | |
123 | enum eth_state_t state; | |
124 | }; | |
125 | ||
126 | /** | |
127 | * struct eth_uclass_priv - The structure attached to the uclass itself | |
128 | * | |
129 | * @current: The Ethernet device that the network functions are using | |
130 | */ | |
131 | struct eth_uclass_priv { | |
132 | struct udevice *current; | |
133 | }; | |
134 | ||
60304592 JH |
135 | /* eth_errno - This stores the most recent failure code from DM functions */ |
136 | static int eth_errno; | |
137 | ||
05c3e68f JH |
138 | static struct eth_uclass_priv *eth_get_uclass_priv(void) |
139 | { | |
140 | struct uclass *uc; | |
141 | ||
142 | uclass_get(UCLASS_ETH, &uc); | |
143 | assert(uc); | |
144 | return uc->priv; | |
145 | } | |
146 | ||
147 | static void eth_set_current_to_next(void) | |
148 | { | |
149 | struct eth_uclass_priv *uc_priv; | |
150 | ||
151 | uc_priv = eth_get_uclass_priv(); | |
152 | if (uc_priv->current) | |
153 | uclass_next_device(&uc_priv->current); | |
154 | if (!uc_priv->current) | |
155 | uclass_first_device(UCLASS_ETH, &uc_priv->current); | |
156 | } | |
157 | ||
60304592 JH |
158 | /* |
159 | * Typically this will simply return the active device. | |
160 | * In the case where the most recent active device was unset, this will attempt | |
161 | * to return the first device. If that device doesn't exist or fails to probe, | |
162 | * this function will return NULL. | |
163 | */ | |
05c3e68f JH |
164 | struct udevice *eth_get_dev(void) |
165 | { | |
166 | struct eth_uclass_priv *uc_priv; | |
167 | ||
168 | uc_priv = eth_get_uclass_priv(); | |
169 | if (!uc_priv->current) | |
60304592 | 170 | eth_errno = uclass_first_device(UCLASS_ETH, |
05c3e68f JH |
171 | &uc_priv->current); |
172 | return uc_priv->current; | |
173 | } | |
174 | ||
60304592 JH |
175 | /* |
176 | * Typically this will just store a device pointer. | |
177 | * In case it was not probed, we will attempt to do so. | |
178 | * dev may be NULL to unset the active device. | |
179 | */ | |
05c3e68f JH |
180 | static void eth_set_dev(struct udevice *dev) |
181 | { | |
60304592 JH |
182 | if (dev && !device_active(dev)) |
183 | eth_errno = device_probe(dev); | |
05c3e68f JH |
184 | eth_get_uclass_priv()->current = dev; |
185 | } | |
186 | ||
e58780dc JH |
187 | /* |
188 | * Find the udevice that either has the name passed in as devname or has an | |
189 | * alias named devname. | |
190 | */ | |
191 | struct udevice *eth_get_dev_by_name(const char *devname) | |
192 | { | |
193 | int seq = -1; | |
194 | char *endp = NULL; | |
195 | const char *startp = NULL; | |
196 | struct udevice *it; | |
197 | struct uclass *uc; | |
e408c421 | 198 | int len = strlen("eth"); |
e58780dc JH |
199 | |
200 | /* Must be longer than 3 to be an alias */ | |
e408c421 BM |
201 | if (!strncmp(devname, "eth", len) && strlen(devname) > len) { |
202 | startp = devname + len; | |
e58780dc JH |
203 | seq = simple_strtoul(startp, &endp, 10); |
204 | } | |
205 | ||
206 | uclass_get(UCLASS_ETH, &uc); | |
207 | uclass_foreach_dev(it, uc) { | |
60304592 JH |
208 | /* |
209 | * We need the seq to be valid, so try to probe it. | |
210 | * If the probe fails, the seq will not match since it will be | |
211 | * -1 instead of what we are looking for. | |
212 | * We don't care about errors from probe here. Either they won't | |
213 | * match an alias or it will match a literal name and we'll pick | |
214 | * up the error when we try to probe again in eth_set_dev(). | |
215 | */ | |
e58780dc JH |
216 | device_probe(it); |
217 | /* | |
218 | * Check for the name or the sequence number to match | |
219 | */ | |
220 | if (strcmp(it->name, devname) == 0 || | |
221 | (endp > startp && it->seq == seq)) | |
222 | return it; | |
223 | } | |
224 | ||
225 | return NULL; | |
226 | } | |
227 | ||
05c3e68f JH |
228 | unsigned char *eth_get_ethaddr(void) |
229 | { | |
230 | struct eth_pdata *pdata; | |
231 | ||
232 | if (eth_get_dev()) { | |
233 | pdata = eth_get_dev()->platdata; | |
234 | return pdata->enetaddr; | |
235 | } | |
236 | ||
237 | return NULL; | |
238 | } | |
239 | ||
240 | /* Set active state without calling start on the driver */ | |
241 | int eth_init_state_only(void) | |
242 | { | |
243 | struct udevice *current; | |
244 | struct eth_device_priv *priv; | |
245 | ||
246 | current = eth_get_dev(); | |
247 | if (!current || !device_active(current)) | |
248 | return -EINVAL; | |
249 | ||
250 | priv = current->uclass_priv; | |
251 | priv->state = ETH_STATE_ACTIVE; | |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
256 | /* Set passive state without calling stop on the driver */ | |
257 | void eth_halt_state_only(void) | |
258 | { | |
259 | struct udevice *current; | |
260 | struct eth_device_priv *priv; | |
261 | ||
262 | current = eth_get_dev(); | |
263 | if (!current || !device_active(current)) | |
264 | return; | |
265 | ||
266 | priv = current->uclass_priv; | |
267 | priv->state = ETH_STATE_PASSIVE; | |
268 | } | |
269 | ||
270 | int eth_get_dev_index(void) | |
271 | { | |
272 | if (eth_get_dev()) | |
273 | return eth_get_dev()->seq; | |
274 | return -1; | |
275 | } | |
276 | ||
f566c994 JH |
277 | static int eth_write_hwaddr(struct udevice *dev) |
278 | { | |
279 | struct eth_pdata *pdata = dev->platdata; | |
280 | int ret = 0; | |
281 | ||
282 | if (!dev || !device_active(dev)) | |
283 | return -EINVAL; | |
284 | ||
285 | /* seq is valid since the device is active */ | |
286 | if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) { | |
287 | if (!is_valid_ethaddr(pdata->enetaddr)) { | |
288 | printf("\nError: %s address %pM illegal value\n", | |
289 | dev->name, pdata->enetaddr); | |
290 | return -EINVAL; | |
291 | } | |
292 | ||
b86f795a SG |
293 | /* |
294 | * Drivers are allowed to decide not to implement this at | |
295 | * run-time. E.g. Some devices may use it and some may not. | |
296 | */ | |
f566c994 | 297 | ret = eth_get_ops(dev)->write_hwaddr(dev); |
b86f795a SG |
298 | if (ret == -ENOSYS) |
299 | ret = 0; | |
f566c994 JH |
300 | if (ret) |
301 | printf("\nWarning: %s failed to set MAC address\n", | |
302 | dev->name); | |
303 | } | |
304 | ||
305 | return ret; | |
306 | } | |
307 | ||
6e0d26c0 JH |
308 | static int on_ethaddr(const char *name, const char *value, enum env_op op, |
309 | int flags) | |
310 | { | |
311 | int index; | |
312 | int retval; | |
313 | struct udevice *dev; | |
314 | ||
315 | /* look for an index after "eth" */ | |
316 | index = simple_strtoul(name + 3, NULL, 10); | |
317 | ||
318 | retval = uclass_find_device_by_seq(UCLASS_ETH, index, false, &dev); | |
319 | if (!retval) { | |
320 | struct eth_pdata *pdata = dev->platdata; | |
321 | switch (op) { | |
322 | case env_op_create: | |
323 | case env_op_overwrite: | |
324 | eth_parse_enetaddr(value, pdata->enetaddr); | |
325 | break; | |
326 | case env_op_delete: | |
327 | memset(pdata->enetaddr, 0, 6); | |
328 | } | |
329 | } | |
330 | ||
331 | return 0; | |
332 | } | |
333 | U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr); | |
334 | ||
05c3e68f JH |
335 | int eth_init(void) |
336 | { | |
337 | struct udevice *current; | |
338 | struct udevice *old_current; | |
60304592 | 339 | int ret = -ENODEV; |
05c3e68f JH |
340 | |
341 | current = eth_get_dev(); | |
342 | if (!current) { | |
343 | printf("No ethernet found.\n"); | |
344 | return -ENODEV; | |
345 | } | |
346 | ||
347 | old_current = current; | |
348 | do { | |
349 | debug("Trying %s\n", current->name); | |
350 | ||
351 | if (device_active(current)) { | |
60304592 JH |
352 | ret = eth_get_ops(current)->start(current); |
353 | if (ret >= 0) { | |
05c3e68f JH |
354 | struct eth_device_priv *priv = |
355 | current->uclass_priv; | |
356 | ||
357 | priv->state = ETH_STATE_ACTIVE; | |
358 | return 0; | |
359 | } | |
ff819a3a | 360 | } else { |
60304592 | 361 | ret = eth_errno; |
ff819a3a | 362 | } |
60304592 | 363 | |
05c3e68f JH |
364 | debug("FAIL\n"); |
365 | ||
60304592 JH |
366 | /* |
367 | * If ethrotate is enabled, this will change "current", | |
368 | * otherwise we will drop out of this while loop immediately | |
369 | */ | |
05c3e68f | 370 | eth_try_another(0); |
60304592 | 371 | /* This will ensure the new "current" attempted to probe */ |
05c3e68f JH |
372 | current = eth_get_dev(); |
373 | } while (old_current != current); | |
374 | ||
60304592 | 375 | return ret; |
05c3e68f JH |
376 | } |
377 | ||
378 | void eth_halt(void) | |
379 | { | |
380 | struct udevice *current; | |
381 | struct eth_device_priv *priv; | |
382 | ||
383 | current = eth_get_dev(); | |
384 | if (!current || !device_active(current)) | |
385 | return; | |
386 | ||
387 | eth_get_ops(current)->stop(current); | |
388 | priv = current->uclass_priv; | |
389 | priv->state = ETH_STATE_PASSIVE; | |
390 | } | |
391 | ||
eaa8a195 BN |
392 | int eth_is_active(struct udevice *dev) |
393 | { | |
394 | struct eth_device_priv *priv; | |
395 | ||
396 | if (!dev || !device_active(dev)) | |
397 | return 0; | |
398 | ||
399 | priv = dev_get_uclass_priv(dev); | |
400 | return priv->state == ETH_STATE_ACTIVE; | |
401 | } | |
402 | ||
05c3e68f JH |
403 | int eth_send(void *packet, int length) |
404 | { | |
405 | struct udevice *current; | |
60304592 | 406 | int ret; |
05c3e68f JH |
407 | |
408 | current = eth_get_dev(); | |
409 | if (!current) | |
410 | return -ENODEV; | |
411 | ||
412 | if (!device_active(current)) | |
413 | return -EINVAL; | |
414 | ||
60304592 JH |
415 | ret = eth_get_ops(current)->send(current, packet, length); |
416 | if (ret < 0) { | |
417 | /* We cannot completely return the error at present */ | |
418 | debug("%s: send() returned error %d\n", __func__, ret); | |
419 | } | |
420 | return ret; | |
05c3e68f JH |
421 | } |
422 | ||
423 | int eth_rx(void) | |
424 | { | |
425 | struct udevice *current; | |
17591405 | 426 | uchar *packet; |
a1ca92ea | 427 | int flags; |
17591405 JH |
428 | int ret; |
429 | int i; | |
05c3e68f JH |
430 | |
431 | current = eth_get_dev(); | |
432 | if (!current) | |
433 | return -ENODEV; | |
434 | ||
435 | if (!device_active(current)) | |
436 | return -EINVAL; | |
437 | ||
17591405 | 438 | /* Process up to 32 packets at one time */ |
a1ca92ea | 439 | flags = ETH_RECV_CHECK_DEVICE; |
17591405 | 440 | for (i = 0; i < 32; i++) { |
a1ca92ea SG |
441 | ret = eth_get_ops(current)->recv(current, flags, &packet); |
442 | flags = 0; | |
17591405 JH |
443 | if (ret > 0) |
444 | net_process_received_packet(packet, ret); | |
63c9729a JH |
445 | if (ret >= 0 && eth_get_ops(current)->free_pkt) |
446 | eth_get_ops(current)->free_pkt(current, packet, ret); | |
447 | if (ret <= 0) | |
17591405 JH |
448 | break; |
449 | } | |
450 | if (ret == -EAGAIN) | |
451 | ret = 0; | |
60304592 JH |
452 | if (ret < 0) { |
453 | /* We cannot completely return the error at present */ | |
454 | debug("%s: recv() returned error %d\n", __func__, ret); | |
455 | } | |
17591405 | 456 | return ret; |
05c3e68f JH |
457 | } |
458 | ||
05c3e68f JH |
459 | int eth_initialize(void) |
460 | { | |
461 | int num_devices = 0; | |
462 | struct udevice *dev; | |
463 | ||
3bc42700 | 464 | eth_common_init(); |
05c3e68f JH |
465 | |
466 | /* | |
467 | * Devices need to write the hwaddr even if not started so that Linux | |
468 | * will have access to the hwaddr that u-boot stored for the device. | |
469 | * This is accomplished by attempting to probe each device and calling | |
470 | * their write_hwaddr() operation. | |
471 | */ | |
472 | uclass_first_device(UCLASS_ETH, &dev); | |
473 | if (!dev) { | |
474 | printf("No ethernet found.\n"); | |
475 | bootstage_error(BOOTSTAGE_ID_NET_ETH_START); | |
476 | } else { | |
6536b9bb JH |
477 | char *ethprime = getenv("ethprime"); |
478 | struct udevice *prime_dev = NULL; | |
479 | ||
480 | if (ethprime) | |
481 | prime_dev = eth_get_dev_by_name(ethprime); | |
482 | if (prime_dev) { | |
483 | eth_set_dev(prime_dev); | |
484 | eth_current_changed(); | |
485 | } else { | |
486 | eth_set_dev(NULL); | |
487 | } | |
488 | ||
05c3e68f JH |
489 | bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT); |
490 | do { | |
491 | if (num_devices) | |
492 | printf(", "); | |
493 | ||
494 | printf("eth%d: %s", dev->seq, dev->name); | |
495 | ||
6536b9bb JH |
496 | if (ethprime && dev == prime_dev) |
497 | printf(" [PRIME]"); | |
498 | ||
05c3e68f JH |
499 | eth_write_hwaddr(dev); |
500 | ||
501 | uclass_next_device(&dev); | |
502 | num_devices++; | |
503 | } while (dev); | |
504 | ||
505 | putc('\n'); | |
506 | } | |
507 | ||
508 | return num_devices; | |
509 | } | |
510 | ||
511 | static int eth_post_bind(struct udevice *dev) | |
512 | { | |
513 | if (strchr(dev->name, ' ')) { | |
514 | printf("\nError: eth device name \"%s\" has a space!\n", | |
515 | dev->name); | |
516 | return -EINVAL; | |
517 | } | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
522 | static int eth_pre_unbind(struct udevice *dev) | |
523 | { | |
524 | /* Don't hang onto a pointer that is going away */ | |
525 | if (dev == eth_get_uclass_priv()->current) | |
526 | eth_set_dev(NULL); | |
527 | ||
528 | return 0; | |
529 | } | |
530 | ||
531 | static int eth_post_probe(struct udevice *dev) | |
532 | { | |
533 | struct eth_device_priv *priv = dev->uclass_priv; | |
534 | struct eth_pdata *pdata = dev->platdata; | |
535 | unsigned char env_enetaddr[6]; | |
536 | ||
537 | priv->state = ETH_STATE_INIT; | |
538 | ||
539 | /* Check if the device has a MAC address in ROM */ | |
540 | if (eth_get_ops(dev)->read_rom_hwaddr) | |
541 | eth_get_ops(dev)->read_rom_hwaddr(dev); | |
542 | ||
543 | eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr); | |
0adb5b76 JH |
544 | if (!is_zero_ethaddr(env_enetaddr)) { |
545 | if (!is_zero_ethaddr(pdata->enetaddr) && | |
05c3e68f JH |
546 | memcmp(pdata->enetaddr, env_enetaddr, 6)) { |
547 | printf("\nWarning: %s MAC addresses don't match:\n", | |
548 | dev->name); | |
549 | printf("Address in SROM is %pM\n", | |
550 | pdata->enetaddr); | |
551 | printf("Address in environment is %pM\n", | |
552 | env_enetaddr); | |
553 | } | |
554 | ||
555 | /* Override the ROM MAC address */ | |
556 | memcpy(pdata->enetaddr, env_enetaddr, 6); | |
0adb5b76 | 557 | } else if (is_valid_ethaddr(pdata->enetaddr)) { |
05c3e68f JH |
558 | eth_setenv_enetaddr_by_index("eth", dev->seq, pdata->enetaddr); |
559 | printf("\nWarning: %s using MAC address from ROM\n", | |
560 | dev->name); | |
0adb5b76 | 561 | } else if (is_zero_ethaddr(pdata->enetaddr)) { |
bef1014b JH |
562 | #ifdef CONFIG_NET_RANDOM_ETHADDR |
563 | net_random_ethaddr(pdata->enetaddr); | |
564 | printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", | |
565 | dev->name, dev->seq, pdata->enetaddr); | |
566 | #else | |
05c3e68f JH |
567 | printf("\nError: %s address not set.\n", |
568 | dev->name); | |
569 | return -EINVAL; | |
bef1014b | 570 | #endif |
05c3e68f JH |
571 | } |
572 | ||
573 | return 0; | |
574 | } | |
575 | ||
576 | static int eth_pre_remove(struct udevice *dev) | |
577 | { | |
578 | eth_get_ops(dev)->stop(dev); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | UCLASS_DRIVER(eth) = { | |
584 | .name = "eth", | |
585 | .id = UCLASS_ETH, | |
586 | .post_bind = eth_post_bind, | |
587 | .pre_unbind = eth_pre_unbind, | |
588 | .post_probe = eth_post_probe, | |
589 | .pre_remove = eth_pre_remove, | |
590 | .priv_auto_alloc_size = sizeof(struct eth_uclass_priv), | |
591 | .per_device_auto_alloc_size = sizeof(struct eth_device_priv), | |
e58780dc | 592 | .flags = DM_UC_FLAG_SEQ_ALIAS, |
05c3e68f | 593 | }; |
eaa8a195 | 594 | #endif /* #ifdef CONFIG_DM_ETH */ |
05c3e68f JH |
595 | |
596 | #ifndef CONFIG_DM_ETH | |
dd35479a | 597 | |
f85b6071 | 598 | #ifdef CONFIG_API |
f85b6071 RJ |
599 | static struct { |
600 | uchar data[PKTSIZE]; | |
601 | int length; | |
602 | } eth_rcv_bufs[PKTBUFSRX]; | |
603 | ||
66c7385a | 604 | static unsigned int eth_rcv_current, eth_rcv_last; |
f85b6071 RJ |
605 | #endif |
606 | ||
f8be7d65 JH |
607 | static struct eth_device *eth_devices; |
608 | struct eth_device *eth_current; | |
c609719b | 609 | |
84eb1fba JH |
610 | static void eth_set_current_to_next(void) |
611 | { | |
612 | eth_current = eth_current->next; | |
613 | } | |
614 | ||
e58780dc JH |
615 | static void eth_set_dev(struct eth_device *dev) |
616 | { | |
617 | eth_current = dev; | |
618 | } | |
619 | ||
d7fb9bcf | 620 | struct eth_device *eth_get_dev_by_name(const char *devname) |
63ff004c MB |
621 | { |
622 | struct eth_device *dev, *target_dev; | |
623 | ||
7e7f903f HR |
624 | BUG_ON(devname == NULL); |
625 | ||
63ff004c MB |
626 | if (!eth_devices) |
627 | return NULL; | |
628 | ||
629 | dev = eth_devices; | |
630 | target_dev = NULL; | |
631 | do { | |
632 | if (strcmp(devname, dev->name) == 0) { | |
633 | target_dev = dev; | |
634 | break; | |
635 | } | |
636 | dev = dev->next; | |
637 | } while (dev != eth_devices); | |
638 | ||
639 | return target_dev; | |
640 | } | |
641 | ||
9e56986a AF |
642 | struct eth_device *eth_get_dev_by_index(int index) |
643 | { | |
644 | struct eth_device *dev, *target_dev; | |
9e56986a AF |
645 | |
646 | if (!eth_devices) | |
647 | return NULL; | |
648 | ||
649 | dev = eth_devices; | |
650 | target_dev = NULL; | |
651 | do { | |
fea7dcae | 652 | if (dev->index == index) { |
9e56986a AF |
653 | target_dev = dev; |
654 | break; | |
655 | } | |
656 | dev = dev->next; | |
9e56986a AF |
657 | } while (dev != eth_devices); |
658 | ||
659 | return target_dev; | |
660 | } | |
661 | ||
66c7385a | 662 | int eth_get_dev_index(void) |
c609719b | 663 | { |
66c7385a | 664 | if (!eth_current) |
fea7dcae | 665 | return -1; |
c609719b | 666 | |
fea7dcae | 667 | return eth_current->index; |
c609719b WD |
668 | } |
669 | ||
6e0d26c0 JH |
670 | static int on_ethaddr(const char *name, const char *value, enum env_op op, |
671 | int flags) | |
672 | { | |
673 | int index; | |
674 | struct eth_device *dev; | |
675 | ||
676 | if (!eth_devices) | |
677 | return 0; | |
678 | ||
679 | /* look for an index after "eth" */ | |
680 | index = simple_strtoul(name + 3, NULL, 10); | |
681 | ||
682 | dev = eth_devices; | |
683 | do { | |
684 | if (dev->index == index) { | |
685 | switch (op) { | |
686 | case env_op_create: | |
687 | case env_op_overwrite: | |
688 | eth_parse_enetaddr(value, dev->enetaddr); | |
689 | break; | |
690 | case env_op_delete: | |
691 | memset(dev->enetaddr, 0, 6); | |
692 | } | |
693 | } | |
694 | } while (dev != eth_devices); | |
695 | ||
696 | return 0; | |
697 | } | |
698 | U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr); | |
699 | ||
7616e785 SG |
700 | int eth_write_hwaddr(struct eth_device *dev, const char *base_name, |
701 | int eth_number) | |
702 | { | |
703 | unsigned char env_enetaddr[6]; | |
704 | int ret = 0; | |
705 | ||
69376644 | 706 | eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr); |
7616e785 | 707 | |
0adb5b76 JH |
708 | if (!is_zero_ethaddr(env_enetaddr)) { |
709 | if (!is_zero_ethaddr(dev->enetaddr) && | |
4c7c65af | 710 | memcmp(dev->enetaddr, env_enetaddr, 6)) { |
7616e785 | 711 | printf("\nWarning: %s MAC addresses don't match:\n", |
ff819a3a | 712 | dev->name); |
7616e785 | 713 | printf("Address in SROM is %pM\n", |
ff819a3a | 714 | dev->enetaddr); |
7616e785 | 715 | printf("Address in environment is %pM\n", |
ff819a3a | 716 | env_enetaddr); |
7616e785 SG |
717 | } |
718 | ||
719 | memcpy(dev->enetaddr, env_enetaddr, 6); | |
0adb5b76 | 720 | } else if (is_valid_ethaddr(dev->enetaddr)) { |
c88ef3c1 RH |
721 | eth_setenv_enetaddr_by_index(base_name, eth_number, |
722 | dev->enetaddr); | |
723 | printf("\nWarning: %s using MAC address from net device\n", | |
ff819a3a | 724 | dev->name); |
0adb5b76 | 725 | } else if (is_zero_ethaddr(dev->enetaddr)) { |
bef1014b JH |
726 | #ifdef CONFIG_NET_RANDOM_ETHADDR |
727 | net_random_ethaddr(dev->enetaddr); | |
728 | printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", | |
729 | dev->name, eth_number, dev->enetaddr); | |
730 | #else | |
75d9a45c PM |
731 | printf("\nError: %s address not set.\n", |
732 | dev->name); | |
733 | return -EINVAL; | |
bef1014b | 734 | #endif |
7616e785 SG |
735 | } |
736 | ||
75d9a45c | 737 | if (dev->write_hwaddr && !eth_mac_skip(eth_number)) { |
0adb5b76 | 738 | if (!is_valid_ethaddr(dev->enetaddr)) { |
75d9a45c | 739 | printf("\nError: %s address %pM illegal value\n", |
ff819a3a | 740 | dev->name, dev->enetaddr); |
75d9a45c PM |
741 | return -EINVAL; |
742 | } | |
460f949f | 743 | |
7616e785 | 744 | ret = dev->write_hwaddr(dev); |
75d9a45c | 745 | if (ret) |
ff819a3a JH |
746 | printf("\nWarning: %s failed to set MAC address\n", |
747 | dev->name); | |
460f949f | 748 | } |
7616e785 SG |
749 | |
750 | return ret; | |
751 | } | |
752 | ||
89d48367 SG |
753 | int eth_register(struct eth_device *dev) |
754 | { | |
755 | struct eth_device *d; | |
66c7385a | 756 | static int index; |
58c583b6 | 757 | |
f6add132 | 758 | assert(strlen(dev->name) < sizeof(dev->name)); |
58c583b6 | 759 | |
89d48367 | 760 | if (!eth_devices) { |
ff819a3a JH |
761 | eth_devices = dev; |
762 | eth_current = dev; | |
89d48367 | 763 | eth_current_changed(); |
c609719b | 764 | } else { |
66c7385a | 765 | for (d = eth_devices; d->next != eth_devices; d = d->next) |
aba4b69d | 766 | ; |
c609719b WD |
767 | d->next = dev; |
768 | } | |
769 | ||
770 | dev->state = ETH_STATE_INIT; | |
771 | dev->next = eth_devices; | |
fea7dcae | 772 | dev->index = index++; |
c609719b WD |
773 | |
774 | return 0; | |
775 | } | |
776 | ||
e7e982d6 VP |
777 | int eth_unregister(struct eth_device *dev) |
778 | { | |
779 | struct eth_device *cur; | |
780 | ||
781 | /* No device */ | |
782 | if (!eth_devices) | |
05324a48 | 783 | return -ENODEV; |
e7e982d6 VP |
784 | |
785 | for (cur = eth_devices; cur->next != eth_devices && cur->next != dev; | |
786 | cur = cur->next) | |
787 | ; | |
788 | ||
789 | /* Device not found */ | |
790 | if (cur->next != dev) | |
05324a48 | 791 | return -ENODEV; |
e7e982d6 VP |
792 | |
793 | cur->next = dev->next; | |
794 | ||
795 | if (eth_devices == dev) | |
796 | eth_devices = dev->next == eth_devices ? NULL : dev->next; | |
797 | ||
798 | if (eth_current == dev) { | |
799 | eth_current = eth_devices; | |
800 | eth_current_changed(); | |
801 | } | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
d2eaec60 | 806 | int eth_initialize(void) |
c609719b | 807 | { |
fea7dcae | 808 | int num_devices = 0; |
3bc42700 | 809 | |
c609719b WD |
810 | eth_devices = NULL; |
811 | eth_current = NULL; | |
3bc42700 | 812 | eth_common_init(); |
d9785c14 | 813 | |
c609719b | 814 | if (!eth_devices) { |
66c7385a | 815 | puts("No ethernet found.\n"); |
770605e4 | 816 | bootstage_error(BOOTSTAGE_ID_NET_ETH_START); |
c609719b WD |
817 | } else { |
818 | struct eth_device *dev = eth_devices; | |
66c7385a | 819 | char *ethprime = getenv("ethprime"); |
c609719b | 820 | |
770605e4 | 821 | bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT); |
c609719b | 822 | do { |
fea7dcae | 823 | if (dev->index) |
66c7385a | 824 | puts(", "); |
c609719b WD |
825 | |
826 | printf("%s", dev->name); | |
827 | ||
66c7385a | 828 | if (ethprime && strcmp(dev->name, ethprime) == 0) { |
c609719b | 829 | eth_current = dev; |
66c7385a | 830 | puts(" [PRIME]"); |
c609719b WD |
831 | } |
832 | ||
1384f3bb | 833 | if (strchr(dev->name, ' ')) |
66c7385a JH |
834 | puts("\nWarning: eth device name has a space!" |
835 | "\n"); | |
1384f3bb | 836 | |
75d9a45c | 837 | eth_write_hwaddr(dev, "eth", dev->index); |
c609719b | 838 | |
c609719b | 839 | dev = dev->next; |
fea7dcae | 840 | num_devices++; |
66c7385a | 841 | } while (dev != eth_devices); |
c609719b | 842 | |
89d48367 | 843 | eth_current_changed(); |
66c7385a | 844 | putc('\n'); |
c609719b WD |
845 | } |
846 | ||
fea7dcae | 847 | return num_devices; |
c609719b WD |
848 | } |
849 | ||
53a5c424 DU |
850 | #ifdef CONFIG_MCAST_TFTP |
851 | /* Multicast. | |
852 | * mcast_addr: multicast ipaddr from which multicast Mac is made | |
85eb5caf | 853 | * join: 1=join, 0=leave. |
53a5c424 | 854 | */ |
049a95a7 | 855 | int eth_mcast_join(struct in_addr mcast_ip, int join) |
53a5c424 | 856 | { |
66c7385a | 857 | u8 mcast_mac[6]; |
85eb5caf | 858 | if (!eth_current || !eth_current->mcast) |
53a5c424 | 859 | return -1; |
049a95a7 JH |
860 | mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff; |
861 | mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff; | |
862 | mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f; | |
53a5c424 DU |
863 | mcast_mac[2] = 0x5e; |
864 | mcast_mac[1] = 0x0; | |
865 | mcast_mac[0] = 0x1; | |
866 | return eth_current->mcast(eth_current, mcast_mac, join); | |
867 | } | |
868 | ||
85eb5caf WD |
869 | /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c |
870 | * and this is the ethernet-crc method needed for TSEC -- and perhaps | |
53a5c424 DU |
871 | * some other adapter -- hash tables |
872 | */ | |
873 | #define CRCPOLY_LE 0xedb88320 | |
66c7385a | 874 | u32 ether_crc(size_t len, unsigned char const *p) |
53a5c424 DU |
875 | { |
876 | int i; | |
877 | u32 crc; | |
878 | crc = ~0; | |
879 | while (len--) { | |
880 | crc ^= *p++; | |
881 | for (i = 0; i < 8; i++) | |
882 | crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); | |
883 | } | |
884 | /* an reverse the bits, cuz of way they arrive -- last-first */ | |
885 | crc = (crc >> 16) | (crc << 16); | |
886 | crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00); | |
887 | crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0); | |
888 | crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc); | |
889 | crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa); | |
890 | return crc; | |
891 | } | |
892 | ||
893 | #endif | |
894 | ||
c609719b | 895 | |
d2eaec60 | 896 | int eth_init(void) |
c609719b | 897 | { |
6e0d26c0 | 898 | struct eth_device *old_current; |
c609719b | 899 | |
6bc11388 | 900 | if (!eth_current) { |
66c7385a | 901 | puts("No ethernet found.\n"); |
05324a48 | 902 | return -ENODEV; |
6bc11388 | 903 | } |
c609719b WD |
904 | |
905 | old_current = eth_current; | |
906 | do { | |
0ebf04c6 | 907 | debug("Trying %s\n", eth_current->name); |
c609719b | 908 | |
d2eaec60 | 909 | if (eth_current->init(eth_current, gd->bd) >= 0) { |
c609719b WD |
910 | eth_current->state = ETH_STATE_ACTIVE; |
911 | ||
505be87a | 912 | return 0; |
c609719b | 913 | } |
0ebf04c6 | 914 | debug("FAIL\n"); |
c609719b WD |
915 | |
916 | eth_try_another(0); | |
917 | } while (old_current != eth_current); | |
918 | ||
05324a48 | 919 | return -ETIMEDOUT; |
c609719b WD |
920 | } |
921 | ||
922 | void eth_halt(void) | |
923 | { | |
924 | if (!eth_current) | |
925 | return; | |
926 | ||
927 | eth_current->halt(eth_current); | |
928 | ||
929 | eth_current->state = ETH_STATE_PASSIVE; | |
930 | } | |
931 | ||
eaa8a195 BN |
932 | int eth_is_active(struct eth_device *dev) |
933 | { | |
934 | return dev && dev->state == ETH_STATE_ACTIVE; | |
935 | } | |
936 | ||
db288a96 | 937 | int eth_send(void *packet, int length) |
c609719b WD |
938 | { |
939 | if (!eth_current) | |
05324a48 | 940 | return -ENODEV; |
c609719b WD |
941 | |
942 | return eth_current->send(eth_current, packet, length); | |
943 | } | |
944 | ||
945 | int eth_rx(void) | |
946 | { | |
947 | if (!eth_current) | |
05324a48 | 948 | return -ENODEV; |
c609719b WD |
949 | |
950 | return eth_current->recv(eth_current); | |
951 | } | |
05c3e68f | 952 | #endif /* ifndef CONFIG_DM_ETH */ |
c609719b | 953 | |
f85b6071 | 954 | #ifdef CONFIG_API |
db288a96 | 955 | static void eth_save_packet(void *packet, int length) |
f85b6071 | 956 | { |
db288a96 | 957 | char *p = packet; |
f85b6071 RJ |
958 | int i; |
959 | ||
960 | if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current) | |
961 | return; | |
962 | ||
963 | if (PKTSIZE < length) | |
964 | return; | |
965 | ||
966 | for (i = 0; i < length; i++) | |
967 | eth_rcv_bufs[eth_rcv_last].data[i] = p[i]; | |
968 | ||
969 | eth_rcv_bufs[eth_rcv_last].length = length; | |
970 | eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX; | |
971 | } | |
972 | ||
db288a96 | 973 | int eth_receive(void *packet, int length) |
f85b6071 | 974 | { |
db288a96 | 975 | char *p = packet; |
f85b6071 RJ |
976 | void *pp = push_packet; |
977 | int i; | |
978 | ||
979 | if (eth_rcv_current == eth_rcv_last) { | |
980 | push_packet = eth_save_packet; | |
981 | eth_rx(); | |
982 | push_packet = pp; | |
983 | ||
984 | if (eth_rcv_current == eth_rcv_last) | |
985 | return -1; | |
986 | } | |
987 | ||
46c07bcf | 988 | length = min(eth_rcv_bufs[eth_rcv_current].length, length); |
f85b6071 RJ |
989 | |
990 | for (i = 0; i < length; i++) | |
991 | p[i] = eth_rcv_bufs[eth_rcv_current].data[i]; | |
992 | ||
993 | eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX; | |
994 | return length; | |
995 | } | |
996 | #endif /* CONFIG_API */ | |
997 | ||
84eb1fba JH |
998 | static void eth_current_changed(void) |
999 | { | |
1000 | char *act = getenv("ethact"); | |
1001 | /* update current ethernet name */ | |
1002 | if (eth_get_dev()) { | |
1003 | if (act == NULL || strcmp(act, eth_get_name()) != 0) | |
1004 | setenv("ethact", eth_get_name()); | |
1005 | } | |
1006 | /* | |
1007 | * remove the variable completely if there is no active | |
1008 | * interface | |
1009 | */ | |
1010 | else if (act != NULL) | |
1011 | setenv("ethact", NULL); | |
1012 | } | |
1013 | ||
c609719b WD |
1014 | void eth_try_another(int first_restart) |
1015 | { | |
05c3e68f | 1016 | static void *first_failed; |
c650e1be | 1017 | char *ethrotate; |
e1692577 MF |
1018 | |
1019 | /* | |
1020 | * Do not rotate between network interfaces when | |
1021 | * 'ethrotate' variable is set to 'no'. | |
1022 | */ | |
66c7385a JH |
1023 | ethrotate = getenv("ethrotate"); |
1024 | if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0)) | |
e1692577 | 1025 | return; |
c609719b | 1026 | |
84eb1fba | 1027 | if (!eth_get_dev()) |
c609719b WD |
1028 | return; |
1029 | ||
66c7385a | 1030 | if (first_restart) |
84eb1fba | 1031 | first_failed = eth_get_dev(); |
c609719b | 1032 | |
84eb1fba | 1033 | eth_set_current_to_next(); |
c609719b | 1034 | |
89d48367 | 1035 | eth_current_changed(); |
a3d991bd | 1036 | |
84eb1fba | 1037 | if (first_failed == eth_get_dev()) |
bc0571fc | 1038 | net_restart_wrap = 1; |
c609719b WD |
1039 | } |
1040 | ||
a3d991bd WD |
1041 | void eth_set_current(void) |
1042 | { | |
66c7385a JH |
1043 | static char *act; |
1044 | static int env_changed_id; | |
2f70c49e | 1045 | int env_id; |
a3d991bd | 1046 | |
2f70c49e HS |
1047 | env_id = get_env_id(); |
1048 | if ((act == NULL) || (env_changed_id != env_id)) { | |
1049 | act = getenv("ethact"); | |
1050 | env_changed_id = env_id; | |
1051 | } | |
6536b9bb JH |
1052 | |
1053 | if (act == NULL) { | |
1054 | char *ethprime = getenv("ethprime"); | |
1055 | void *dev = NULL; | |
1056 | ||
1057 | if (ethprime) | |
1058 | dev = eth_get_dev_by_name(ethprime); | |
1059 | if (dev) | |
1060 | eth_set_dev(dev); | |
1061 | else | |
1062 | eth_set_dev(NULL); | |
1063 | } else { | |
e58780dc | 1064 | eth_set_dev(eth_get_dev_by_name(act)); |
6536b9bb | 1065 | } |
a3d991bd | 1066 | |
89d48367 | 1067 | eth_current_changed(); |
a3d991bd | 1068 | } |
a3d991bd | 1069 | |
84eb1fba | 1070 | const char *eth_get_name(void) |
5bb226e8 | 1071 | { |
84eb1fba | 1072 | return eth_get_dev() ? eth_get_dev()->name : "unknown"; |
5bb226e8 | 1073 | } |