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8#include <common.h>
9#include <command.h>
10#include <env.h>
11#include <net.h>
12#include <phy.h>
13#include <linux/errno.h>
14#include <net/pcap.h>
15#include "eth_internal.h"
16
17DECLARE_GLOBAL_DATA_PTR;
18
19
20
21
22
23static int __def_eth_init(bd_t *bis)
24{
25 return -1;
26}
27int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
28int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
29
30#ifdef CONFIG_API
31static struct {
32 uchar data[PKTSIZE];
33 int length;
34} eth_rcv_bufs[PKTBUFSRX];
35
36static unsigned int eth_rcv_current, eth_rcv_last;
37#endif
38
39static struct eth_device *eth_devices;
40struct eth_device *eth_current;
41
42void eth_set_current_to_next(void)
43{
44 eth_current = eth_current->next;
45}
46
47void eth_set_dev(struct eth_device *dev)
48{
49 eth_current = dev;
50}
51
52struct eth_device *eth_get_dev_by_name(const char *devname)
53{
54 struct eth_device *dev, *target_dev;
55
56 BUG_ON(devname == NULL);
57
58 if (!eth_devices)
59 return NULL;
60
61 dev = eth_devices;
62 target_dev = NULL;
63 do {
64 if (strcmp(devname, dev->name) == 0) {
65 target_dev = dev;
66 break;
67 }
68 dev = dev->next;
69 } while (dev != eth_devices);
70
71 return target_dev;
72}
73
74struct eth_device *eth_get_dev_by_index(int index)
75{
76 struct eth_device *dev, *target_dev;
77
78 if (!eth_devices)
79 return NULL;
80
81 dev = eth_devices;
82 target_dev = NULL;
83 do {
84 if (dev->index == index) {
85 target_dev = dev;
86 break;
87 }
88 dev = dev->next;
89 } while (dev != eth_devices);
90
91 return target_dev;
92}
93
94int eth_get_dev_index(void)
95{
96 if (!eth_current)
97 return -1;
98
99 return eth_current->index;
100}
101
102static int on_ethaddr(const char *name, const char *value, enum env_op op,
103 int flags)
104{
105 int index;
106 struct eth_device *dev;
107
108 if (!eth_devices)
109 return 0;
110
111
112 index = simple_strtoul(name + 3, NULL, 10);
113
114 dev = eth_devices;
115 do {
116 if (dev->index == index) {
117 switch (op) {
118 case env_op_create:
119 case env_op_overwrite:
120 string_to_enetaddr(value, dev->enetaddr);
121 eth_write_hwaddr(dev, "eth", dev->index);
122 break;
123 case env_op_delete:
124 memset(dev->enetaddr, 0, ARP_HLEN);
125 }
126 }
127 dev = dev->next;
128 } while (dev != eth_devices);
129
130 return 0;
131}
132U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
133
134int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
135 int eth_number)
136{
137 unsigned char env_enetaddr[ARP_HLEN];
138 int ret = 0;
139
140 eth_env_get_enetaddr_by_index(base_name, eth_number, env_enetaddr);
141
142 if (!is_zero_ethaddr(env_enetaddr)) {
143 if (!is_zero_ethaddr(dev->enetaddr) &&
144 memcmp(dev->enetaddr, env_enetaddr, ARP_HLEN)) {
145 printf("\nWarning: %s MAC addresses don't match:\n",
146 dev->name);
147 printf("Address in SROM is %pM\n",
148 dev->enetaddr);
149 printf("Address in environment is %pM\n",
150 env_enetaddr);
151 }
152
153 memcpy(dev->enetaddr, env_enetaddr, ARP_HLEN);
154 } else if (is_valid_ethaddr(dev->enetaddr)) {
155 eth_env_set_enetaddr_by_index(base_name, eth_number,
156 dev->enetaddr);
157 } else if (is_zero_ethaddr(dev->enetaddr)) {
158#ifdef CONFIG_NET_RANDOM_ETHADDR
159 net_random_ethaddr(dev->enetaddr);
160 printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
161 dev->name, eth_number, dev->enetaddr);
162#else
163 printf("\nError: %s address not set.\n",
164 dev->name);
165 return -EINVAL;
166#endif
167 }
168
169 if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
170 if (!is_valid_ethaddr(dev->enetaddr)) {
171 printf("\nError: %s address %pM illegal value\n",
172 dev->name, dev->enetaddr);
173 return -EINVAL;
174 }
175
176 ret = dev->write_hwaddr(dev);
177 if (ret)
178 printf("\nWarning: %s failed to set MAC address\n",
179 dev->name);
180 }
181
182 return ret;
183}
184
185int eth_register(struct eth_device *dev)
186{
187 struct eth_device *d;
188 static int index;
189
190 assert(strlen(dev->name) < sizeof(dev->name));
191
192 if (!eth_devices) {
193 eth_devices = dev;
194 eth_current = dev;
195 eth_current_changed();
196 } else {
197 for (d = eth_devices; d->next != eth_devices; d = d->next)
198 ;
199 d->next = dev;
200 }
201
202 dev->state = ETH_STATE_INIT;
203 dev->next = eth_devices;
204 dev->index = index++;
205
206 return 0;
207}
208
209int eth_unregister(struct eth_device *dev)
210{
211 struct eth_device *cur;
212
213
214 if (!eth_devices)
215 return -ENODEV;
216
217 for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
218 cur = cur->next)
219 ;
220
221
222 if (cur->next != dev)
223 return -ENODEV;
224
225 cur->next = dev->next;
226
227 if (eth_devices == dev)
228 eth_devices = dev->next == eth_devices ? NULL : dev->next;
229
230 if (eth_current == dev) {
231 eth_current = eth_devices;
232 eth_current_changed();
233 }
234
235 return 0;
236}
237
238int eth_initialize(void)
239{
240 int num_devices = 0;
241
242 eth_devices = NULL;
243 eth_current = NULL;
244 eth_common_init();
245
246
247
248
249 if (board_eth_init != __def_eth_init) {
250 if (board_eth_init(gd->bd) < 0)
251 printf("Board Net Initialization Failed\n");
252 } else if (cpu_eth_init != __def_eth_init) {
253 if (cpu_eth_init(gd->bd) < 0)
254 printf("CPU Net Initialization Failed\n");
255 } else {
256 printf("Net Initialization Skipped\n");
257 }
258
259 if (!eth_devices) {
260 puts("No ethernet found.\n");
261 bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
262 } else {
263 struct eth_device *dev = eth_devices;
264 char *ethprime = env_get("ethprime");
265
266 bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
267 do {
268 if (dev->index)
269 puts(", ");
270
271 printf("%s", dev->name);
272
273 if (ethprime && strcmp(dev->name, ethprime) == 0) {
274 eth_current = dev;
275 puts(" [PRIME]");
276 }
277
278 if (strchr(dev->name, ' '))
279 puts("\nWarning: eth device name has a space!"
280 "\n");
281
282 eth_write_hwaddr(dev, "eth", dev->index);
283
284 dev = dev->next;
285 num_devices++;
286 } while (dev != eth_devices);
287
288 eth_current_changed();
289 putc('\n');
290 }
291
292 return num_devices;
293}
294
295
296
297
298
299int eth_mcast_join(struct in_addr mcast_ip, int join)
300{
301 u8 mcast_mac[ARP_HLEN];
302 if (!eth_current || !eth_current->mcast)
303 return -1;
304 mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff;
305 mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff;
306 mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f;
307 mcast_mac[2] = 0x5e;
308 mcast_mac[1] = 0x0;
309 mcast_mac[0] = 0x1;
310 return eth_current->mcast(eth_current, mcast_mac, join);
311}
312
313int eth_init(void)
314{
315 struct eth_device *old_current;
316
317 if (!eth_current) {
318 puts("No ethernet found.\n");
319 return -ENODEV;
320 }
321
322 old_current = eth_current;
323 do {
324 debug("Trying %s\n", eth_current->name);
325
326 if (eth_current->init(eth_current, gd->bd) >= 0) {
327 eth_current->state = ETH_STATE_ACTIVE;
328
329 return 0;
330 }
331 debug("FAIL\n");
332
333 eth_try_another(0);
334 } while (old_current != eth_current);
335
336 return -ETIMEDOUT;
337}
338
339void eth_halt(void)
340{
341 if (!eth_current)
342 return;
343
344 eth_current->halt(eth_current);
345
346 eth_current->state = ETH_STATE_PASSIVE;
347}
348
349int eth_is_active(struct eth_device *dev)
350{
351 return dev && dev->state == ETH_STATE_ACTIVE;
352}
353
354int eth_send(void *packet, int length)
355{
356 int ret;
357
358 if (!eth_current)
359 return -ENODEV;
360
361 ret = eth_current->send(eth_current, packet, length);
362#if defined(CONFIG_CMD_PCAP)
363 if (ret >= 0)
364 pcap_post(packet, lengeth, true);
365#endif
366 return ret;
367}
368
369int eth_rx(void)
370{
371 if (!eth_current)
372 return -ENODEV;
373
374 return eth_current->recv(eth_current);
375}
376
377#ifdef CONFIG_API
378static void eth_save_packet(void *packet, int length)
379{
380 char *p = packet;
381 int i;
382
383 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
384 return;
385
386 if (PKTSIZE < length)
387 return;
388
389 for (i = 0; i < length; i++)
390 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
391
392 eth_rcv_bufs[eth_rcv_last].length = length;
393 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
394}
395
396int eth_receive(void *packet, int length)
397{
398 char *p = packet;
399 void *pp = push_packet;
400 int i;
401
402 if (eth_rcv_current == eth_rcv_last) {
403 push_packet = eth_save_packet;
404 eth_rx();
405 push_packet = pp;
406
407 if (eth_rcv_current == eth_rcv_last)
408 return -1;
409 }
410
411 length = min(eth_rcv_bufs[eth_rcv_current].length, length);
412
413 for (i = 0; i < length; i++)
414 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
415
416 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
417 return length;
418}
419#endif
420
