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wdenkc6097192002-11-03 00:24:07 +00001/*
Joe Hershberger05c3e682015-03-22 17:09:10 -05002 * (C) Copyright 2001-2015
wdenkc6097192002-11-03 00:24:07 +00003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
Joe Hershberger05c3e682015-03-22 17:09:10 -05004 * Joe Hershberger, National Instruments
wdenkc6097192002-11-03 00:24:07 +00005 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02006 * SPDX-License-Identifier: GPL-2.0+
wdenkc6097192002-11-03 00:24:07 +00007 */
8
9#include <common.h>
10#include <command.h>
Joe Hershberger05c3e682015-03-22 17:09:10 -050011#include <dm.h>
Joe Hershberger6e0d26c2015-05-20 14:27:26 -050012#include <environment.h>
wdenkc6097192002-11-03 00:24:07 +000013#include <net.h>
Marian Balakowiczd9785c12005-11-30 18:06:04 +010014#include <miiphy.h>
Andy Fleming5f184712011-04-08 02:10:27 -050015#include <phy.h>
Pavel Machek75d9a452014-07-13 10:27:02 +020016#include <asm/errno.h>
Joe Hershberger05c3e682015-03-22 17:09:10 -050017#include <dm/device-internal.h>
Joe Hershberger6e0d26c2015-05-20 14:27:26 -050018#include <dm/uclass-internal.h>
wdenkc6097192002-11-03 00:24:07 +000019
Joe Hershbergerd2eaec62015-03-22 17:09:06 -050020DECLARE_GLOBAL_DATA_PTR;
21
Mike Frysinger3f6e6992009-01-29 19:43:44 -050022void 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
Josh Wu219cc942015-09-01 18:22:55 +080034int eth_getenv_enetaddr(const char *name, uchar *enetaddr)
Mike Frysinger3f6e6992009-01-29 19:43:44 -050035{
36 eth_parse_enetaddr(getenv(name), enetaddr);
Joe Hershberger0adb5b72015-04-08 01:41:04 -050037 return is_valid_ethaddr(enetaddr);
Mike Frysinger3f6e6992009-01-29 19:43:44 -050038}
39
Josh Wu219cc942015-09-01 18:22:55 +080040int eth_setenv_enetaddr(const char *name, const uchar *enetaddr)
Mike Frysinger3f6e6992009-01-29 19:43:44 -050041{
42 char buf[20];
43
44 sprintf(buf, "%pM", enetaddr);
45
46 return setenv(name, buf);
47}
Mike Frysinger86848a72009-07-15 21:31:28 -040048
Simon Glass7616e782011-06-13 16:13:10 -070049int eth_getenv_enetaddr_by_index(const char *base_name, int index,
50 uchar *enetaddr)
Mike Frysinger86848a72009-07-15 21:31:28 -040051{
52 char enetvar[32];
Simon Glass7616e782011-06-13 16:13:10 -070053 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
Mike Frysinger86848a72009-07-15 21:31:28 -040054 return eth_getenv_enetaddr(enetvar, enetaddr);
55}
Mike Frysinger3f6e6992009-01-29 19:43:44 -050056
Joe Hershberger154177e2012-07-10 16:23:22 -050057static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index,
Rob Herringc88ef3c2012-04-14 18:06:49 +000058 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
Ben Warrenecee9322010-04-26 11:11:46 -070065static int eth_mac_skip(int index)
66{
67 char enetvar[15];
68 char *skip_state;
Joe Hershbergerff819a32015-04-08 01:41:19 -050069
Ben Warrenecee9322010-04-26 11:11:46 -070070 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
Joe Hershbergerff819a32015-04-08 01:41:19 -050071 skip_state = getenv(enetvar);
72 return skip_state != NULL;
Ben Warrenecee9322010-04-26 11:11:46 -070073}
74
Joe Hershberger84eb1fb2015-03-22 17:09:03 -050075static void eth_current_changed(void);
76
Simon Glass3bc42702015-04-05 16:07:37 -060077/*
78 * CPU and board-specific Ethernet initializations. Aliased function
79 * signals caller to move on
80 */
81static int __def_eth_init(bd_t *bis)
82{
83 return -1;
84}
85int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
86int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
87
88static 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
Simon Glass3bc42702015-04-05 16:07:37 -060099 /*
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 {
Bin Mengd8f79af2015-08-27 22:25:52 -0700110#ifndef CONFIG_DM_ETH
Simon Glass3bc42702015-04-05 16:07:37 -0600111 printf("Net Initialization Skipped\n");
Bin Mengd8f79af2015-08-27 22:25:52 -0700112#endif
Simon Glass3bc42702015-04-05 16:07:37 -0600113 }
114}
115
Joe Hershberger05c3e682015-03-22 17:09:10 -0500116#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 */
122struct 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 */
131struct eth_uclass_priv {
132 struct udevice *current;
133};
134
Joe Hershberger60304592015-03-22 17:09:24 -0500135/* eth_errno - This stores the most recent failure code from DM functions */
136static int eth_errno;
137
Joe Hershberger05c3e682015-03-22 17:09:10 -0500138static 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
147static 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
Joe Hershberger60304592015-03-22 17:09:24 -0500158/*
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 */
Joe Hershberger05c3e682015-03-22 17:09:10 -0500164struct 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)
Joe Hershberger60304592015-03-22 17:09:24 -0500170 eth_errno = uclass_first_device(UCLASS_ETH,
Joe Hershberger05c3e682015-03-22 17:09:10 -0500171 &uc_priv->current);
172 return uc_priv->current;
173}
174
Joe Hershberger60304592015-03-22 17:09:24 -0500175/*
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 */
Joe Hershberger05c3e682015-03-22 17:09:10 -0500180static void eth_set_dev(struct udevice *dev)
181{
Bin Mengac1d3132015-10-07 21:45:44 -0700182 if (dev && !device_active(dev)) {
Joe Hershberger60304592015-03-22 17:09:24 -0500183 eth_errno = device_probe(dev);
Bin Mengac1d3132015-10-07 21:45:44 -0700184 if (eth_errno)
185 dev = NULL;
186 }
187
Joe Hershberger05c3e682015-03-22 17:09:10 -0500188 eth_get_uclass_priv()->current = dev;
189}
190
Joe Hershbergere58780d2015-03-22 17:09:16 -0500191/*
192 * Find the udevice that either has the name passed in as devname or has an
193 * alias named devname.
194 */
195struct udevice *eth_get_dev_by_name(const char *devname)
196{
197 int seq = -1;
198 char *endp = NULL;
199 const char *startp = NULL;
200 struct udevice *it;
201 struct uclass *uc;
Bin Menge408c422015-08-27 22:25:54 -0700202 int len = strlen("eth");
Joe Hershbergere58780d2015-03-22 17:09:16 -0500203
204 /* Must be longer than 3 to be an alias */
Bin Menge408c422015-08-27 22:25:54 -0700205 if (!strncmp(devname, "eth", len) && strlen(devname) > len) {
206 startp = devname + len;
Joe Hershbergere58780d2015-03-22 17:09:16 -0500207 seq = simple_strtoul(startp, &endp, 10);
208 }
209
210 uclass_get(UCLASS_ETH, &uc);
211 uclass_foreach_dev(it, uc) {
Joe Hershberger60304592015-03-22 17:09:24 -0500212 /*
213 * We need the seq to be valid, so try to probe it.
214 * If the probe fails, the seq will not match since it will be
215 * -1 instead of what we are looking for.
216 * We don't care about errors from probe here. Either they won't
217 * match an alias or it will match a literal name and we'll pick
218 * up the error when we try to probe again in eth_set_dev().
219 */
Bin Mengac1d3132015-10-07 21:45:44 -0700220 if (device_probe(it))
221 continue;
222 /* Check for the name or the sequence number to match */
Joe Hershbergere58780d2015-03-22 17:09:16 -0500223 if (strcmp(it->name, devname) == 0 ||
224 (endp > startp && it->seq == seq))
225 return it;
226 }
227
228 return NULL;
229}
230
Joe Hershberger05c3e682015-03-22 17:09:10 -0500231unsigned char *eth_get_ethaddr(void)
232{
233 struct eth_pdata *pdata;
234
235 if (eth_get_dev()) {
236 pdata = eth_get_dev()->platdata;
237 return pdata->enetaddr;
238 }
239
240 return NULL;
241}
242
243/* Set active state without calling start on the driver */
244int eth_init_state_only(void)
245{
246 struct udevice *current;
247 struct eth_device_priv *priv;
248
249 current = eth_get_dev();
250 if (!current || !device_active(current))
251 return -EINVAL;
252
253 priv = current->uclass_priv;
254 priv->state = ETH_STATE_ACTIVE;
255
256 return 0;
257}
258
259/* Set passive state without calling stop on the driver */
260void eth_halt_state_only(void)
261{
262 struct udevice *current;
263 struct eth_device_priv *priv;
264
265 current = eth_get_dev();
266 if (!current || !device_active(current))
267 return;
268
269 priv = current->uclass_priv;
270 priv->state = ETH_STATE_PASSIVE;
271}
272
273int eth_get_dev_index(void)
274{
275 if (eth_get_dev())
276 return eth_get_dev()->seq;
277 return -1;
278}
279
Joe Hershbergerf566c992015-03-24 02:41:49 -0500280static int eth_write_hwaddr(struct udevice *dev)
281{
282 struct eth_pdata *pdata = dev->platdata;
283 int ret = 0;
284
285 if (!dev || !device_active(dev))
286 return -EINVAL;
287
288 /* seq is valid since the device is active */
289 if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) {
290 if (!is_valid_ethaddr(pdata->enetaddr)) {
291 printf("\nError: %s address %pM illegal value\n",
292 dev->name, pdata->enetaddr);
293 return -EINVAL;
294 }
295
Simon Glassb86f7952015-07-06 16:47:55 -0600296 /*
297 * Drivers are allowed to decide not to implement this at
298 * run-time. E.g. Some devices may use it and some may not.
299 */
Joe Hershbergerf566c992015-03-24 02:41:49 -0500300 ret = eth_get_ops(dev)->write_hwaddr(dev);
Simon Glassb86f7952015-07-06 16:47:55 -0600301 if (ret == -ENOSYS)
302 ret = 0;
Joe Hershbergerf566c992015-03-24 02:41:49 -0500303 if (ret)
304 printf("\nWarning: %s failed to set MAC address\n",
305 dev->name);
306 }
307
308 return ret;
309}
310
Joe Hershberger6e0d26c2015-05-20 14:27:26 -0500311static int on_ethaddr(const char *name, const char *value, enum env_op op,
312 int flags)
313{
314 int index;
315 int retval;
316 struct udevice *dev;
317
318 /* look for an index after "eth" */
319 index = simple_strtoul(name + 3, NULL, 10);
320
321 retval = uclass_find_device_by_seq(UCLASS_ETH, index, false, &dev);
322 if (!retval) {
323 struct eth_pdata *pdata = dev->platdata;
324 switch (op) {
325 case env_op_create:
326 case env_op_overwrite:
327 eth_parse_enetaddr(value, pdata->enetaddr);
328 break;
329 case env_op_delete:
330 memset(pdata->enetaddr, 0, 6);
331 }
332 }
333
334 return 0;
335}
336U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
337
Joe Hershberger05c3e682015-03-22 17:09:10 -0500338int eth_init(void)
339{
Bin Meng4cdc2c82015-12-21 22:43:39 -0800340 char *ethact = getenv("ethact");
341 char *ethrotate = getenv("ethrotate");
342 struct udevice *current = NULL;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500343 struct udevice *old_current;
Joe Hershberger60304592015-03-22 17:09:24 -0500344 int ret = -ENODEV;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500345
Bin Meng4cdc2c82015-12-21 22:43:39 -0800346 /*
347 * When 'ethrotate' variable is set to 'no' and 'ethact' variable
348 * is already set to an ethernet device, we should stick to 'ethact'.
349 */
350 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0)) {
351 if (ethact) {
352 current = eth_get_dev_by_name(ethact);
353 if (!current)
354 return -EINVAL;
355 }
356 }
357
Joe Hershberger05c3e682015-03-22 17:09:10 -0500358 if (!current) {
Bin Meng4cdc2c82015-12-21 22:43:39 -0800359 current = eth_get_dev();
360 if (!current) {
361 printf("No ethernet found.\n");
362 return -ENODEV;
363 }
Joe Hershberger05c3e682015-03-22 17:09:10 -0500364 }
365
366 old_current = current;
367 do {
Bin Mengac1d3132015-10-07 21:45:44 -0700368 if (current) {
369 debug("Trying %s\n", current->name);
Joe Hershberger05c3e682015-03-22 17:09:10 -0500370
Bin Mengac1d3132015-10-07 21:45:44 -0700371 if (device_active(current)) {
372 ret = eth_get_ops(current)->start(current);
373 if (ret >= 0) {
374 struct eth_device_priv *priv =
375 current->uclass_priv;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500376
Bin Mengac1d3132015-10-07 21:45:44 -0700377 priv->state = ETH_STATE_ACTIVE;
378 return 0;
379 }
380 } else {
381 ret = eth_errno;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500382 }
Joe Hershberger60304592015-03-22 17:09:24 -0500383
Bin Mengac1d3132015-10-07 21:45:44 -0700384 debug("FAIL\n");
385 } else {
386 debug("PROBE FAIL\n");
387 }
Joe Hershberger05c3e682015-03-22 17:09:10 -0500388
Joe Hershberger60304592015-03-22 17:09:24 -0500389 /*
390 * If ethrotate is enabled, this will change "current",
391 * otherwise we will drop out of this while loop immediately
392 */
Joe Hershberger05c3e682015-03-22 17:09:10 -0500393 eth_try_another(0);
Joe Hershberger60304592015-03-22 17:09:24 -0500394 /* This will ensure the new "current" attempted to probe */
Joe Hershberger05c3e682015-03-22 17:09:10 -0500395 current = eth_get_dev();
396 } while (old_current != current);
397
Joe Hershberger60304592015-03-22 17:09:24 -0500398 return ret;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500399}
400
401void eth_halt(void)
402{
403 struct udevice *current;
404 struct eth_device_priv *priv;
405
406 current = eth_get_dev();
407 if (!current || !device_active(current))
408 return;
409
410 eth_get_ops(current)->stop(current);
411 priv = current->uclass_priv;
412 priv->state = ETH_STATE_PASSIVE;
413}
414
Bernhard Nortmanneaa8a192015-09-14 15:29:43 +0200415int eth_is_active(struct udevice *dev)
416{
417 struct eth_device_priv *priv;
418
419 if (!dev || !device_active(dev))
420 return 0;
421
422 priv = dev_get_uclass_priv(dev);
423 return priv->state == ETH_STATE_ACTIVE;
424}
425
Joe Hershberger05c3e682015-03-22 17:09:10 -0500426int eth_send(void *packet, int length)
427{
428 struct udevice *current;
Joe Hershberger60304592015-03-22 17:09:24 -0500429 int ret;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500430
431 current = eth_get_dev();
432 if (!current)
433 return -ENODEV;
434
435 if (!device_active(current))
436 return -EINVAL;
437
Joe Hershberger60304592015-03-22 17:09:24 -0500438 ret = eth_get_ops(current)->send(current, packet, length);
439 if (ret < 0) {
440 /* We cannot completely return the error at present */
441 debug("%s: send() returned error %d\n", __func__, ret);
442 }
443 return ret;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500444}
445
446int eth_rx(void)
447{
448 struct udevice *current;
Joe Hershberger17591402015-03-22 17:09:12 -0500449 uchar *packet;
Simon Glassa1ca92e2015-07-06 16:47:49 -0600450 int flags;
Joe Hershberger17591402015-03-22 17:09:12 -0500451 int ret;
452 int i;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500453
454 current = eth_get_dev();
455 if (!current)
456 return -ENODEV;
457
458 if (!device_active(current))
459 return -EINVAL;
460
Joe Hershberger17591402015-03-22 17:09:12 -0500461 /* Process up to 32 packets at one time */
Simon Glassa1ca92e2015-07-06 16:47:49 -0600462 flags = ETH_RECV_CHECK_DEVICE;
Joe Hershberger17591402015-03-22 17:09:12 -0500463 for (i = 0; i < 32; i++) {
Simon Glassa1ca92e2015-07-06 16:47:49 -0600464 ret = eth_get_ops(current)->recv(current, flags, &packet);
465 flags = 0;
Joe Hershberger17591402015-03-22 17:09:12 -0500466 if (ret > 0)
467 net_process_received_packet(packet, ret);
Joe Hershberger63c97292015-04-03 20:09:46 -0500468 if (ret >= 0 && eth_get_ops(current)->free_pkt)
469 eth_get_ops(current)->free_pkt(current, packet, ret);
470 if (ret <= 0)
Joe Hershberger17591402015-03-22 17:09:12 -0500471 break;
472 }
473 if (ret == -EAGAIN)
474 ret = 0;
Joe Hershberger60304592015-03-22 17:09:24 -0500475 if (ret < 0) {
476 /* We cannot completely return the error at present */
477 debug("%s: recv() returned error %d\n", __func__, ret);
478 }
Joe Hershberger17591402015-03-22 17:09:12 -0500479 return ret;
Joe Hershberger05c3e682015-03-22 17:09:10 -0500480}
481
Joe Hershberger05c3e682015-03-22 17:09:10 -0500482int eth_initialize(void)
483{
484 int num_devices = 0;
485 struct udevice *dev;
486
Simon Glass3bc42702015-04-05 16:07:37 -0600487 eth_common_init();
Joe Hershberger05c3e682015-03-22 17:09:10 -0500488
489 /*
490 * Devices need to write the hwaddr even if not started so that Linux
491 * will have access to the hwaddr that u-boot stored for the device.
492 * This is accomplished by attempting to probe each device and calling
493 * their write_hwaddr() operation.
494 */
495 uclass_first_device(UCLASS_ETH, &dev);
496 if (!dev) {
497 printf("No ethernet found.\n");
498 bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
499 } else {
Joe Hershberger6536b9b2015-03-22 17:09:17 -0500500 char *ethprime = getenv("ethprime");
501 struct udevice *prime_dev = NULL;
502
503 if (ethprime)
504 prime_dev = eth_get_dev_by_name(ethprime);
505 if (prime_dev) {
506 eth_set_dev(prime_dev);
507 eth_current_changed();
508 } else {
509 eth_set_dev(NULL);
510 }
511
Joe Hershberger05c3e682015-03-22 17:09:10 -0500512 bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
513 do {
514 if (num_devices)
515 printf(", ");
516
517 printf("eth%d: %s", dev->seq, dev->name);
518
Joe Hershberger6536b9b2015-03-22 17:09:17 -0500519 if (ethprime && dev == prime_dev)
520 printf(" [PRIME]");
521
Joe Hershberger05c3e682015-03-22 17:09:10 -0500522 eth_write_hwaddr(dev);
523
524 uclass_next_device(&dev);
525 num_devices++;
526 } while (dev);
527
528 putc('\n');
529 }
530
531 return num_devices;
532}
533
534static int eth_post_bind(struct udevice *dev)
535{
536 if (strchr(dev->name, ' ')) {
537 printf("\nError: eth device name \"%s\" has a space!\n",
538 dev->name);
539 return -EINVAL;
540 }
541
542 return 0;
543}
544
545static int eth_pre_unbind(struct udevice *dev)
546{
547 /* Don't hang onto a pointer that is going away */
548 if (dev == eth_get_uclass_priv()->current)
549 eth_set_dev(NULL);
550
551 return 0;
552}
553
554static int eth_post_probe(struct udevice *dev)
555{
556 struct eth_device_priv *priv = dev->uclass_priv;
557 struct eth_pdata *pdata = dev->platdata;
558 unsigned char env_enetaddr[6];
559
Michal Simek94067582015-12-08 16:45:30 +0100560#if defined(CONFIG_NEEDS_MANUAL_RELOC)
561 struct eth_ops *ops = eth_get_ops(dev);
562 static int reloc_done;
563
564 if (!reloc_done) {
565 if (ops->start)
566 ops->start += gd->reloc_off;
567 if (ops->send)
568 ops->send += gd->reloc_off;
569 if (ops->recv)
570 ops->recv += gd->reloc_off;
571 if (ops->free_pkt)
572 ops->free_pkt += gd->reloc_off;
573 if (ops->stop)
574 ops->stop += gd->reloc_off;
575#ifdef CONFIG_MCAST_TFTP
576 if (ops->mcast)
577 ops->mcast += gd->reloc_off;
578#endif
579 if (ops->write_hwaddr)
580 ops->write_hwaddr += gd->reloc_off;
581 if (ops->read_rom_hwaddr)
582 ops->read_rom_hwaddr += gd->reloc_off;
583
584 reloc_done++;
585 }
586#endif
587
Joe Hershberger05c3e682015-03-22 17:09:10 -0500588 priv->state = ETH_STATE_INIT;
589
590 /* Check if the device has a MAC address in ROM */
591 if (eth_get_ops(dev)->read_rom_hwaddr)
592 eth_get_ops(dev)->read_rom_hwaddr(dev);
593
594 eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500595 if (!is_zero_ethaddr(env_enetaddr)) {
596 if (!is_zero_ethaddr(pdata->enetaddr) &&
Joe Hershberger05c3e682015-03-22 17:09:10 -0500597 memcmp(pdata->enetaddr, env_enetaddr, 6)) {
598 printf("\nWarning: %s MAC addresses don't match:\n",
599 dev->name);
600 printf("Address in SROM is %pM\n",
601 pdata->enetaddr);
602 printf("Address in environment is %pM\n",
603 env_enetaddr);
604 }
605
606 /* Override the ROM MAC address */
607 memcpy(pdata->enetaddr, env_enetaddr, 6);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500608 } else if (is_valid_ethaddr(pdata->enetaddr)) {
Joe Hershberger05c3e682015-03-22 17:09:10 -0500609 eth_setenv_enetaddr_by_index("eth", dev->seq, pdata->enetaddr);
610 printf("\nWarning: %s using MAC address from ROM\n",
611 dev->name);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500612 } else if (is_zero_ethaddr(pdata->enetaddr)) {
Joe Hershbergerbef10142015-05-04 14:55:13 -0500613#ifdef CONFIG_NET_RANDOM_ETHADDR
614 net_random_ethaddr(pdata->enetaddr);
615 printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
616 dev->name, dev->seq, pdata->enetaddr);
617#else
Joe Hershberger05c3e682015-03-22 17:09:10 -0500618 printf("\nError: %s address not set.\n",
619 dev->name);
620 return -EINVAL;
Joe Hershbergerbef10142015-05-04 14:55:13 -0500621#endif
Joe Hershberger05c3e682015-03-22 17:09:10 -0500622 }
623
624 return 0;
625}
626
627static int eth_pre_remove(struct udevice *dev)
628{
Bin Menga16edab2015-10-07 21:45:42 -0700629 struct eth_pdata *pdata = dev->platdata;
630
Joe Hershberger05c3e682015-03-22 17:09:10 -0500631 eth_get_ops(dev)->stop(dev);
632
Bin Menga16edab2015-10-07 21:45:42 -0700633 /* clear the MAC address */
634 memset(pdata->enetaddr, 0, 6);
635
Joe Hershberger05c3e682015-03-22 17:09:10 -0500636 return 0;
637}
638
639UCLASS_DRIVER(eth) = {
640 .name = "eth",
641 .id = UCLASS_ETH,
642 .post_bind = eth_post_bind,
643 .pre_unbind = eth_pre_unbind,
644 .post_probe = eth_post_probe,
645 .pre_remove = eth_pre_remove,
646 .priv_auto_alloc_size = sizeof(struct eth_uclass_priv),
647 .per_device_auto_alloc_size = sizeof(struct eth_device_priv),
Joe Hershbergere58780d2015-03-22 17:09:16 -0500648 .flags = DM_UC_FLAG_SEQ_ALIAS,
Joe Hershberger05c3e682015-03-22 17:09:10 -0500649};
Bernhard Nortmanneaa8a192015-09-14 15:29:43 +0200650#endif /* #ifdef CONFIG_DM_ETH */
Joe Hershberger05c3e682015-03-22 17:09:10 -0500651
652#ifndef CONFIG_DM_ETH
Ben Warrendd354792008-06-23 22:57:27 -0700653
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100654#ifdef CONFIG_API
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100655static struct {
656 uchar data[PKTSIZE];
657 int length;
658} eth_rcv_bufs[PKTBUFSRX];
659
Joe Hershberger66c73852012-05-15 08:59:07 +0000660static unsigned int eth_rcv_current, eth_rcv_last;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100661#endif
662
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000663static struct eth_device *eth_devices;
664struct eth_device *eth_current;
wdenkc6097192002-11-03 00:24:07 +0000665
Joe Hershberger84eb1fb2015-03-22 17:09:03 -0500666static void eth_set_current_to_next(void)
667{
668 eth_current = eth_current->next;
669}
670
Joe Hershbergere58780d2015-03-22 17:09:16 -0500671static void eth_set_dev(struct eth_device *dev)
672{
673 eth_current = dev;
674}
675
Ben Warrend7fb9bc2010-07-29 12:56:11 -0700676struct eth_device *eth_get_dev_by_name(const char *devname)
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200677{
678 struct eth_device *dev, *target_dev;
679
Helmut Raiger7e7f9032011-08-22 00:17:17 +0000680 BUG_ON(devname == NULL);
681
Marian Balakowicz63ff0042005-10-28 22:30:33 +0200682 if (!eth_devices)
683 return NULL;
684
685 dev = eth_devices;
686 target_dev = NULL;
687 do {
688 if (strcmp(devname, dev->name) == 0) {
689 target_dev = dev;
690 break;
691 }
692 dev = dev->next;
693 } while (dev != eth_devices);
694
695 return target_dev;
696}
697
Andy Fleming9e569862009-02-11 15:07:24 -0600698struct eth_device *eth_get_dev_by_index(int index)
699{
700 struct eth_device *dev, *target_dev;
Andy Fleming9e569862009-02-11 15:07:24 -0600701
702 if (!eth_devices)
703 return NULL;
704
705 dev = eth_devices;
706 target_dev = NULL;
707 do {
Michael Wallefea7dca2011-10-27 11:31:35 +0000708 if (dev->index == index) {
Andy Fleming9e569862009-02-11 15:07:24 -0600709 target_dev = dev;
710 break;
711 }
712 dev = dev->next;
Andy Fleming9e569862009-02-11 15:07:24 -0600713 } while (dev != eth_devices);
714
715 return target_dev;
716}
717
Joe Hershberger66c73852012-05-15 08:59:07 +0000718int eth_get_dev_index(void)
wdenkc6097192002-11-03 00:24:07 +0000719{
Joe Hershberger66c73852012-05-15 08:59:07 +0000720 if (!eth_current)
Michael Wallefea7dca2011-10-27 11:31:35 +0000721 return -1;
wdenkc6097192002-11-03 00:24:07 +0000722
Michael Wallefea7dca2011-10-27 11:31:35 +0000723 return eth_current->index;
wdenkc6097192002-11-03 00:24:07 +0000724}
725
Joe Hershberger6e0d26c2015-05-20 14:27:26 -0500726static int on_ethaddr(const char *name, const char *value, enum env_op op,
727 int flags)
728{
729 int index;
730 struct eth_device *dev;
731
732 if (!eth_devices)
733 return 0;
734
735 /* look for an index after "eth" */
736 index = simple_strtoul(name + 3, NULL, 10);
737
738 dev = eth_devices;
739 do {
740 if (dev->index == index) {
741 switch (op) {
742 case env_op_create:
743 case env_op_overwrite:
744 eth_parse_enetaddr(value, dev->enetaddr);
745 break;
746 case env_op_delete:
747 memset(dev->enetaddr, 0, 6);
748 }
749 }
Gong Qianyu7aba0f22015-08-31 11:34:43 +0800750 dev = dev->next;
Joe Hershberger6e0d26c2015-05-20 14:27:26 -0500751 } while (dev != eth_devices);
752
753 return 0;
754}
755U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
756
Simon Glass7616e782011-06-13 16:13:10 -0700757int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
758 int eth_number)
759{
760 unsigned char env_enetaddr[6];
761 int ret = 0;
762
Eric Miao69376642012-01-18 22:56:33 +0000763 eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr);
Simon Glass7616e782011-06-13 16:13:10 -0700764
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500765 if (!is_zero_ethaddr(env_enetaddr)) {
766 if (!is_zero_ethaddr(dev->enetaddr) &&
Joe Hershberger4c7c65a2015-03-22 17:09:01 -0500767 memcmp(dev->enetaddr, env_enetaddr, 6)) {
Simon Glass7616e782011-06-13 16:13:10 -0700768 printf("\nWarning: %s MAC addresses don't match:\n",
Joe Hershbergerff819a32015-04-08 01:41:19 -0500769 dev->name);
Simon Glass7616e782011-06-13 16:13:10 -0700770 printf("Address in SROM is %pM\n",
Joe Hershbergerff819a32015-04-08 01:41:19 -0500771 dev->enetaddr);
Simon Glass7616e782011-06-13 16:13:10 -0700772 printf("Address in environment is %pM\n",
Joe Hershbergerff819a32015-04-08 01:41:19 -0500773 env_enetaddr);
Simon Glass7616e782011-06-13 16:13:10 -0700774 }
775
776 memcpy(dev->enetaddr, env_enetaddr, 6);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500777 } else if (is_valid_ethaddr(dev->enetaddr)) {
Rob Herringc88ef3c2012-04-14 18:06:49 +0000778 eth_setenv_enetaddr_by_index(base_name, eth_number,
779 dev->enetaddr);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500780 } else if (is_zero_ethaddr(dev->enetaddr)) {
Joe Hershbergerbef10142015-05-04 14:55:13 -0500781#ifdef CONFIG_NET_RANDOM_ETHADDR
782 net_random_ethaddr(dev->enetaddr);
783 printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
784 dev->name, eth_number, dev->enetaddr);
785#else
Pavel Machek75d9a452014-07-13 10:27:02 +0200786 printf("\nError: %s address not set.\n",
787 dev->name);
788 return -EINVAL;
Joe Hershbergerbef10142015-05-04 14:55:13 -0500789#endif
Simon Glass7616e782011-06-13 16:13:10 -0700790 }
791
Pavel Machek75d9a452014-07-13 10:27:02 +0200792 if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500793 if (!is_valid_ethaddr(dev->enetaddr)) {
Pavel Machek75d9a452014-07-13 10:27:02 +0200794 printf("\nError: %s address %pM illegal value\n",
Joe Hershbergerff819a32015-04-08 01:41:19 -0500795 dev->name, dev->enetaddr);
Pavel Machek75d9a452014-07-13 10:27:02 +0200796 return -EINVAL;
797 }
Benoît Thébaudeau460f9492012-08-10 07:56:21 +0000798
Simon Glass7616e782011-06-13 16:13:10 -0700799 ret = dev->write_hwaddr(dev);
Pavel Machek75d9a452014-07-13 10:27:02 +0200800 if (ret)
Joe Hershbergerff819a32015-04-08 01:41:19 -0500801 printf("\nWarning: %s failed to set MAC address\n",
802 dev->name);
Benoît Thébaudeau460f9492012-08-10 07:56:21 +0000803 }
Simon Glass7616e782011-06-13 16:13:10 -0700804
805 return ret;
806}
807
Simon Glass89d48362011-02-16 11:14:33 -0800808int eth_register(struct eth_device *dev)
809{
810 struct eth_device *d;
Joe Hershberger66c73852012-05-15 08:59:07 +0000811 static int index;
Michal Simek58c583b2011-08-29 23:30:13 +0000812
Mike Frysingerf6add132011-11-10 14:11:04 +0000813 assert(strlen(dev->name) < sizeof(dev->name));
Michal Simek58c583b2011-08-29 23:30:13 +0000814
Simon Glass89d48362011-02-16 11:14:33 -0800815 if (!eth_devices) {
Joe Hershbergerff819a32015-04-08 01:41:19 -0500816 eth_devices = dev;
817 eth_current = dev;
Simon Glass89d48362011-02-16 11:14:33 -0800818 eth_current_changed();
wdenkc6097192002-11-03 00:24:07 +0000819 } else {
Joe Hershberger66c73852012-05-15 08:59:07 +0000820 for (d = eth_devices; d->next != eth_devices; d = d->next)
Detlev Zundelaba4b692010-03-31 17:56:08 +0200821 ;
wdenkc6097192002-11-03 00:24:07 +0000822 d->next = dev;
823 }
824
825 dev->state = ETH_STATE_INIT;
826 dev->next = eth_devices;
Michael Wallefea7dca2011-10-27 11:31:35 +0000827 dev->index = index++;
wdenkc6097192002-11-03 00:24:07 +0000828
829 return 0;
830}
831
Vincent Palatine7e982d2012-01-09 08:32:36 +0000832int eth_unregister(struct eth_device *dev)
833{
834 struct eth_device *cur;
835
836 /* No device */
837 if (!eth_devices)
Joe Hershberger05324a42015-03-22 17:09:04 -0500838 return -ENODEV;
Vincent Palatine7e982d2012-01-09 08:32:36 +0000839
840 for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
841 cur = cur->next)
842 ;
843
844 /* Device not found */
845 if (cur->next != dev)
Joe Hershberger05324a42015-03-22 17:09:04 -0500846 return -ENODEV;
Vincent Palatine7e982d2012-01-09 08:32:36 +0000847
848 cur->next = dev->next;
849
850 if (eth_devices == dev)
851 eth_devices = dev->next == eth_devices ? NULL : dev->next;
852
853 if (eth_current == dev) {
854 eth_current = eth_devices;
855 eth_current_changed();
856 }
857
858 return 0;
859}
860
Joe Hershbergerd2eaec62015-03-22 17:09:06 -0500861int eth_initialize(void)
wdenkc6097192002-11-03 00:24:07 +0000862{
Michael Wallefea7dca2011-10-27 11:31:35 +0000863 int num_devices = 0;
Simon Glass3bc42702015-04-05 16:07:37 -0600864
wdenkc6097192002-11-03 00:24:07 +0000865 eth_devices = NULL;
866 eth_current = NULL;
Simon Glass3bc42702015-04-05 16:07:37 -0600867 eth_common_init();
Marian Balakowiczd9785c12005-11-30 18:06:04 +0100868
wdenkc6097192002-11-03 00:24:07 +0000869 if (!eth_devices) {
Joe Hershberger66c73852012-05-15 08:59:07 +0000870 puts("No ethernet found.\n");
Simon Glass770605e2012-02-13 13:51:18 +0000871 bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
wdenkc6097192002-11-03 00:24:07 +0000872 } else {
873 struct eth_device *dev = eth_devices;
Joe Hershberger66c73852012-05-15 08:59:07 +0000874 char *ethprime = getenv("ethprime");
wdenkc6097192002-11-03 00:24:07 +0000875
Simon Glass770605e2012-02-13 13:51:18 +0000876 bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
wdenkc6097192002-11-03 00:24:07 +0000877 do {
Michael Wallefea7dca2011-10-27 11:31:35 +0000878 if (dev->index)
Joe Hershberger66c73852012-05-15 08:59:07 +0000879 puts(", ");
wdenkc6097192002-11-03 00:24:07 +0000880
881 printf("%s", dev->name);
882
Joe Hershberger66c73852012-05-15 08:59:07 +0000883 if (ethprime && strcmp(dev->name, ethprime) == 0) {
wdenkc6097192002-11-03 00:24:07 +0000884 eth_current = dev;
Joe Hershberger66c73852012-05-15 08:59:07 +0000885 puts(" [PRIME]");
wdenkc6097192002-11-03 00:24:07 +0000886 }
887
Mike Frysinger1384f3b2010-06-09 22:10:48 -0400888 if (strchr(dev->name, ' '))
Joe Hershberger66c73852012-05-15 08:59:07 +0000889 puts("\nWarning: eth device name has a space!"
890 "\n");
Mike Frysinger1384f3b2010-06-09 22:10:48 -0400891
Pavel Machek75d9a452014-07-13 10:27:02 +0200892 eth_write_hwaddr(dev, "eth", dev->index);
wdenkc6097192002-11-03 00:24:07 +0000893
wdenkc6097192002-11-03 00:24:07 +0000894 dev = dev->next;
Michael Wallefea7dca2011-10-27 11:31:35 +0000895 num_devices++;
Joe Hershberger66c73852012-05-15 08:59:07 +0000896 } while (dev != eth_devices);
wdenkc6097192002-11-03 00:24:07 +0000897
Simon Glass89d48362011-02-16 11:14:33 -0800898 eth_current_changed();
Joe Hershberger66c73852012-05-15 08:59:07 +0000899 putc('\n');
wdenkc6097192002-11-03 00:24:07 +0000900 }
901
Michael Wallefea7dca2011-10-27 11:31:35 +0000902 return num_devices;
wdenkc6097192002-11-03 00:24:07 +0000903}
904
David Updegraff53a5c422007-06-11 10:41:07 -0500905#ifdef CONFIG_MCAST_TFTP
906/* Multicast.
907 * mcast_addr: multicast ipaddr from which multicast Mac is made
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200908 * join: 1=join, 0=leave.
David Updegraff53a5c422007-06-11 10:41:07 -0500909 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500910int eth_mcast_join(struct in_addr mcast_ip, int join)
David Updegraff53a5c422007-06-11 10:41:07 -0500911{
Joe Hershberger66c73852012-05-15 08:59:07 +0000912 u8 mcast_mac[6];
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200913 if (!eth_current || !eth_current->mcast)
David Updegraff53a5c422007-06-11 10:41:07 -0500914 return -1;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500915 mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff;
916 mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff;
917 mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f;
David Updegraff53a5c422007-06-11 10:41:07 -0500918 mcast_mac[2] = 0x5e;
919 mcast_mac[1] = 0x0;
920 mcast_mac[0] = 0x1;
921 return eth_current->mcast(eth_current, mcast_mac, join);
922}
923
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200924/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
925 * and this is the ethernet-crc method needed for TSEC -- and perhaps
David Updegraff53a5c422007-06-11 10:41:07 -0500926 * some other adapter -- hash tables
927 */
928#define CRCPOLY_LE 0xedb88320
Joe Hershberger66c73852012-05-15 08:59:07 +0000929u32 ether_crc(size_t len, unsigned char const *p)
David Updegraff53a5c422007-06-11 10:41:07 -0500930{
931 int i;
932 u32 crc;
933 crc = ~0;
934 while (len--) {
935 crc ^= *p++;
936 for (i = 0; i < 8; i++)
937 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
938 }
939 /* an reverse the bits, cuz of way they arrive -- last-first */
940 crc = (crc >> 16) | (crc << 16);
941 crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
942 crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
943 crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
944 crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
945 return crc;
946}
947
948#endif
949
wdenkc6097192002-11-03 00:24:07 +0000950
Joe Hershbergerd2eaec62015-03-22 17:09:06 -0500951int eth_init(void)
wdenkc6097192002-11-03 00:24:07 +0000952{
Joe Hershberger6e0d26c2015-05-20 14:27:26 -0500953 struct eth_device *old_current;
wdenkc6097192002-11-03 00:24:07 +0000954
Stefan Roese6bc11382008-03-04 17:40:41 +0100955 if (!eth_current) {
Joe Hershberger66c73852012-05-15 08:59:07 +0000956 puts("No ethernet found.\n");
Joe Hershberger05324a42015-03-22 17:09:04 -0500957 return -ENODEV;
Stefan Roese6bc11382008-03-04 17:40:41 +0100958 }
wdenkc6097192002-11-03 00:24:07 +0000959
960 old_current = eth_current;
961 do {
Robin Getz0ebf04c2009-07-23 03:01:03 -0400962 debug("Trying %s\n", eth_current->name);
wdenkc6097192002-11-03 00:24:07 +0000963
Joe Hershbergerd2eaec62015-03-22 17:09:06 -0500964 if (eth_current->init(eth_current, gd->bd) >= 0) {
wdenkc6097192002-11-03 00:24:07 +0000965 eth_current->state = ETH_STATE_ACTIVE;
966
Upakul Barkakaty505be872007-11-29 12:16:13 +0530967 return 0;
wdenkc6097192002-11-03 00:24:07 +0000968 }
Robin Getz0ebf04c2009-07-23 03:01:03 -0400969 debug("FAIL\n");
wdenkc6097192002-11-03 00:24:07 +0000970
971 eth_try_another(0);
972 } while (old_current != eth_current);
973
Joe Hershberger05324a42015-03-22 17:09:04 -0500974 return -ETIMEDOUT;
wdenkc6097192002-11-03 00:24:07 +0000975}
976
977void eth_halt(void)
978{
979 if (!eth_current)
980 return;
981
982 eth_current->halt(eth_current);
983
984 eth_current->state = ETH_STATE_PASSIVE;
985}
986
Bernhard Nortmanneaa8a192015-09-14 15:29:43 +0200987int eth_is_active(struct eth_device *dev)
988{
989 return dev && dev->state == ETH_STATE_ACTIVE;
990}
991
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000992int eth_send(void *packet, int length)
wdenkc6097192002-11-03 00:24:07 +0000993{
994 if (!eth_current)
Joe Hershberger05324a42015-03-22 17:09:04 -0500995 return -ENODEV;
wdenkc6097192002-11-03 00:24:07 +0000996
997 return eth_current->send(eth_current, packet, length);
998}
999
1000int eth_rx(void)
1001{
1002 if (!eth_current)
Joe Hershberger05324a42015-03-22 17:09:04 -05001003 return -ENODEV;
wdenkc6097192002-11-03 00:24:07 +00001004
1005 return eth_current->recv(eth_current);
1006}
Joe Hershberger05c3e682015-03-22 17:09:10 -05001007#endif /* ifndef CONFIG_DM_ETH */
wdenkc6097192002-11-03 00:24:07 +00001008
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001009#ifdef CONFIG_API
Joe Hershbergerdb288a92012-05-15 08:59:04 +00001010static void eth_save_packet(void *packet, int length)
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001011{
Joe Hershbergerdb288a92012-05-15 08:59:04 +00001012 char *p = packet;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001013 int i;
1014
1015 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
1016 return;
1017
1018 if (PKTSIZE < length)
1019 return;
1020
1021 for (i = 0; i < length; i++)
1022 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
1023
1024 eth_rcv_bufs[eth_rcv_last].length = length;
1025 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
1026}
1027
Joe Hershbergerdb288a92012-05-15 08:59:04 +00001028int eth_receive(void *packet, int length)
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001029{
Joe Hershbergerdb288a92012-05-15 08:59:04 +00001030 char *p = packet;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001031 void *pp = push_packet;
1032 int i;
1033
1034 if (eth_rcv_current == eth_rcv_last) {
1035 push_packet = eth_save_packet;
1036 eth_rx();
1037 push_packet = pp;
1038
1039 if (eth_rcv_current == eth_rcv_last)
1040 return -1;
1041 }
1042
Michael Walle46c07bc2012-06-22 11:24:28 +00001043 length = min(eth_rcv_bufs[eth_rcv_current].length, length);
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001044
1045 for (i = 0; i < length; i++)
1046 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
1047
1048 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
1049 return length;
1050}
1051#endif /* CONFIG_API */
1052
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001053static void eth_current_changed(void)
1054{
1055 char *act = getenv("ethact");
Bin Menga671c4f2015-12-21 22:43:38 -08001056 char *ethrotate;
1057
1058 /*
1059 * The call to eth_get_dev() below has a side effect of rotating
1060 * ethernet device if uc_priv->current == NULL. This is not what
1061 * we want when 'ethrotate' variable is 'no'.
1062 */
1063 ethrotate = getenv("ethrotate");
1064 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
1065 return;
1066
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001067 /* update current ethernet name */
1068 if (eth_get_dev()) {
1069 if (act == NULL || strcmp(act, eth_get_name()) != 0)
1070 setenv("ethact", eth_get_name());
1071 }
1072 /*
1073 * remove the variable completely if there is no active
1074 * interface
1075 */
1076 else if (act != NULL)
1077 setenv("ethact", NULL);
1078}
1079
wdenkc6097192002-11-03 00:24:07 +00001080void eth_try_another(int first_restart)
1081{
Joe Hershberger05c3e682015-03-22 17:09:10 -05001082 static void *first_failed;
Remy Bohmerc650e1b2011-02-19 20:15:14 +01001083 char *ethrotate;
Matthias Fuchse1692572008-01-17 07:45:05 +01001084
1085 /*
1086 * Do not rotate between network interfaces when
1087 * 'ethrotate' variable is set to 'no'.
1088 */
Joe Hershberger66c73852012-05-15 08:59:07 +00001089 ethrotate = getenv("ethrotate");
1090 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
Matthias Fuchse1692572008-01-17 07:45:05 +01001091 return;
wdenkc6097192002-11-03 00:24:07 +00001092
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001093 if (!eth_get_dev())
wdenkc6097192002-11-03 00:24:07 +00001094 return;
1095
Joe Hershberger66c73852012-05-15 08:59:07 +00001096 if (first_restart)
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001097 first_failed = eth_get_dev();
wdenkc6097192002-11-03 00:24:07 +00001098
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001099 eth_set_current_to_next();
wdenkc6097192002-11-03 00:24:07 +00001100
Simon Glass89d48362011-02-16 11:14:33 -08001101 eth_current_changed();
wdenka3d991b2004-04-15 21:48:45 +00001102
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001103 if (first_failed == eth_get_dev())
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001104 net_restart_wrap = 1;
wdenkc6097192002-11-03 00:24:07 +00001105}
1106
wdenka3d991b2004-04-15 21:48:45 +00001107void eth_set_current(void)
1108{
Joe Hershberger66c73852012-05-15 08:59:07 +00001109 static char *act;
1110 static int env_changed_id;
Heiko Schocher2f70c492009-02-10 09:38:52 +01001111 int env_id;
wdenka3d991b2004-04-15 21:48:45 +00001112
Heiko Schocher2f70c492009-02-10 09:38:52 +01001113 env_id = get_env_id();
1114 if ((act == NULL) || (env_changed_id != env_id)) {
1115 act = getenv("ethact");
1116 env_changed_id = env_id;
1117 }
Joe Hershberger6536b9b2015-03-22 17:09:17 -05001118
1119 if (act == NULL) {
1120 char *ethprime = getenv("ethprime");
1121 void *dev = NULL;
1122
1123 if (ethprime)
1124 dev = eth_get_dev_by_name(ethprime);
1125 if (dev)
1126 eth_set_dev(dev);
1127 else
1128 eth_set_dev(NULL);
1129 } else {
Joe Hershbergere58780d2015-03-22 17:09:16 -05001130 eth_set_dev(eth_get_dev_by_name(act));
Joe Hershberger6536b9b2015-03-22 17:09:17 -05001131 }
wdenka3d991b2004-04-15 21:48:45 +00001132
Simon Glass89d48362011-02-16 11:14:33 -08001133 eth_current_changed();
wdenka3d991b2004-04-15 21:48:45 +00001134}
wdenka3d991b2004-04-15 21:48:45 +00001135
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001136const char *eth_get_name(void)
wdenk5bb226e2003-11-17 21:14:37 +00001137{
Joe Hershberger84eb1fb2015-03-22 17:09:03 -05001138 return eth_get_dev() ? eth_get_dev()->name : "unknown";
wdenk5bb226e2003-11-17 21:14:37 +00001139}