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8#include <common.h>
9#include <bootstage.h>
10#include <command.h>
11#include <dm.h>
12#include <env.h>
13#include <log.h>
14#include <net.h>
15#include <phy.h>
16#include <asm/global_data.h>
17#include <linux/bug.h>
18#include <linux/errno.h>
19#include <net/pcap.h>
20#include "eth_internal.h"
21
22DECLARE_GLOBAL_DATA_PTR;
23
24
25
26
27
28static int __def_eth_init(struct bd_info *bis)
29{
30 return -1;
31}
32int cpu_eth_init(struct bd_info *bis) __attribute__((weak, alias("__def_eth_init")));
33int board_eth_init(struct bd_info *bis) __attribute__((weak, alias("__def_eth_init")));
34
35#ifdef CONFIG_API
36static struct {
37 uchar data[PKTSIZE];
38 int length;
39} eth_rcv_bufs[PKTBUFSRX];
40
41static unsigned int eth_rcv_current, eth_rcv_last;
42#endif
43
44static struct eth_device *eth_devices;
45struct eth_device *eth_current;
46
47void eth_set_current_to_next(void)
48{
49 eth_current = eth_current->next;
50}
51
52void eth_set_dev(struct eth_device *dev)
53{
54 eth_current = dev;
55}
56
57struct eth_device *eth_get_dev_by_name(const char *devname)
58{
59 struct eth_device *dev, *target_dev;
60
61 BUG_ON(devname == NULL);
62
63 if (!eth_devices)
64 return NULL;
65
66 dev = eth_devices;
67 target_dev = NULL;
68 do {
69 if (strcmp(devname, dev->name) == 0) {
70 target_dev = dev;
71 break;
72 }
73 dev = dev->next;
74 } while (dev != eth_devices);
75
76 return target_dev;
77}
78
79struct eth_device *eth_get_dev_by_index(int index)
80{
81 struct eth_device *dev, *target_dev;
82
83 if (!eth_devices)
84 return NULL;
85
86 dev = eth_devices;
87 target_dev = NULL;
88 do {
89 if (dev->index == index) {
90 target_dev = dev;
91 break;
92 }
93 dev = dev->next;
94 } while (dev != eth_devices);
95
96 return target_dev;
97}
98
99int eth_get_dev_index(void)
100{
101 if (!eth_current)
102 return -1;
103
104 return eth_current->index;
105}
106
107static int on_ethaddr(const char *name, const char *value, enum env_op op,
108 int flags)
109{
110 int index;
111 struct eth_device *dev;
112
113 if (!eth_devices)
114 return 0;
115
116
117 index = dectoul(name + 3, NULL);
118
119 dev = eth_devices;
120 do {
121 if (dev->index == index) {
122 switch (op) {
123 case env_op_create:
124 case env_op_overwrite:
125 string_to_enetaddr(value, dev->enetaddr);
126 eth_write_hwaddr(dev, "eth", dev->index);
127 break;
128 case env_op_delete:
129 memset(dev->enetaddr, 0, ARP_HLEN);
130 }
131 }
132 dev = dev->next;
133 } while (dev != eth_devices);
134
135 return 0;
136}
137U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr);
138
139int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
140 int eth_number)
141{
142 unsigned char env_enetaddr[ARP_HLEN];
143 int ret = 0;
144
145 eth_env_get_enetaddr_by_index(base_name, eth_number, env_enetaddr);
146
147 if (!is_zero_ethaddr(env_enetaddr)) {
148 if (!is_zero_ethaddr(dev->enetaddr) &&
149 memcmp(dev->enetaddr, env_enetaddr, ARP_HLEN)) {
150 printf("\nWarning: %s MAC addresses don't match:\n",
151 dev->name);
152 printf("Address in SROM is %pM\n",
153 dev->enetaddr);
154 printf("Address in environment is %pM\n",
155 env_enetaddr);
156 }
157
158 memcpy(dev->enetaddr, env_enetaddr, ARP_HLEN);
159 } else if (is_valid_ethaddr(dev->enetaddr)) {
160 eth_env_set_enetaddr_by_index(base_name, eth_number,
161 dev->enetaddr);
162 } else if (is_zero_ethaddr(dev->enetaddr)) {
163#ifdef CONFIG_NET_RANDOM_ETHADDR
164 net_random_ethaddr(dev->enetaddr);
165 printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
166 dev->name, eth_number, dev->enetaddr);
167 eth_env_set_enetaddr_by_index("eth", eth_number,
168 dev->enetaddr);
169#else
170 printf("\nError: %s address not set.\n",
171 dev->name);
172 return -EINVAL;
173#endif
174 }
175
176 if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
177 if (!is_valid_ethaddr(dev->enetaddr)) {
178 printf("\nError: %s address %pM illegal value\n",
179 dev->name, dev->enetaddr);
180 return -EINVAL;
181 }
182
183 ret = dev->write_hwaddr(dev);
184 if (ret)
185 printf("\nWarning: %s failed to set MAC address\n",
186 dev->name);
187 }
188
189 return ret;
190}
191
192int eth_register(struct eth_device *dev)
193{
194 struct eth_device *d;
195 static int index;
196
197 assert(strlen(dev->name) < sizeof(dev->name));
198
199 if (!eth_devices) {
200 eth_devices = dev;
201 eth_current = dev;
202 eth_current_changed();
203 } else {
204 for (d = eth_devices; d->next != eth_devices; d = d->next)
205 ;
206 d->next = dev;
207 }
208
209 dev->state = ETH_STATE_INIT;
210 dev->next = eth_devices;
211 dev->index = index++;
212
213 return 0;
214}
215
216int eth_unregister(struct eth_device *dev)
217{
218 struct eth_device *cur;
219
220
221 if (!eth_devices)
222 return -ENODEV;
223
224 for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
225 cur = cur->next)
226 ;
227
228
229 if (cur->next != dev)
230 return -ENODEV;
231
232 cur->next = dev->next;
233
234 if (eth_devices == dev)
235 eth_devices = dev->next == eth_devices ? NULL : dev->next;
236
237 if (eth_current == dev) {
238 eth_current = eth_devices;
239 eth_current_changed();
240 }
241
242 return 0;
243}
244
245int eth_initialize(void)
246{
247 int num_devices = 0;
248
249 eth_devices = NULL;
250 eth_current = NULL;
251 eth_common_init();
252
253
254
255
256 if (board_eth_init != __def_eth_init) {
257 if (board_eth_init(gd->bd) < 0)
258 printf("Board Net Initialization Failed\n");
259 } else if (cpu_eth_init != __def_eth_init) {
260 if (cpu_eth_init(gd->bd) < 0)
261 printf("CPU Net Initialization Failed\n");
262 } else {
263 printf("Net Initialization Skipped\n");
264 }
265
266 if (!eth_devices) {
267 log_err("No ethernet found.\n");
268 bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
269 } else {
270 struct eth_device *dev = eth_devices;
271 char *ethprime = env_get("ethprime");
272
273 bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
274 do {
275 if (dev->index)
276 puts(", ");
277
278 printf("%s", dev->name);
279
280 if (ethprime && strcmp(dev->name, ethprime) == 0) {
281 eth_current = dev;
282 puts(" [PRIME]");
283 }
284
285 if (strchr(dev->name, ' '))
286 puts("\nWarning: eth device name has a space!"
287 "\n");
288
289 eth_write_hwaddr(dev, "eth", dev->index);
290
291 dev = dev->next;
292 num_devices++;
293 } while (dev != eth_devices);
294
295 eth_current_changed();
296 putc('\n');
297 }
298
299 return num_devices;
300}
301
302
303
304
305
306int eth_mcast_join(struct in_addr mcast_ip, int join)
307{
308 u8 mcast_mac[ARP_HLEN];
309 if (!eth_current || !eth_current->mcast)
310 return -1;
311 mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff;
312 mcast_mac[4] = (htonl(mcast_ip.s_addr)>>8) & 0xff;
313 mcast_mac[3] = (htonl(mcast_ip.s_addr)>>16) & 0x7f;
314 mcast_mac[2] = 0x5e;
315 mcast_mac[1] = 0x0;
316 mcast_mac[0] = 0x1;
317 return eth_current->mcast(eth_current, mcast_mac, join);
318}
319
320int eth_init(void)
321{
322 struct eth_device *old_current;
323
324 if (!eth_current) {
325 log_err("No ethernet found.\n");
326 return -ENODEV;
327 }
328
329 old_current = eth_current;
330 do {
331 debug("Trying %s\n", eth_current->name);
332
333 if (eth_current->init(eth_current, gd->bd) >= 0) {
334 eth_current->state = ETH_STATE_ACTIVE;
335
336 return 0;
337 }
338 debug("FAIL\n");
339
340 eth_try_another(0);
341 } while (old_current != eth_current);
342
343 return -ETIMEDOUT;
344}
345
346void eth_halt(void)
347{
348 if (!eth_current)
349 return;
350
351 eth_current->halt(eth_current);
352
353 eth_current->state = ETH_STATE_PASSIVE;
354}
355
356int eth_is_active(struct eth_device *dev)
357{
358 return dev && dev->state == ETH_STATE_ACTIVE;
359}
360
361int eth_send(void *packet, int length)
362{
363 int ret;
364
365 if (!eth_current)
366 return -ENODEV;
367
368 ret = eth_current->send(eth_current, packet, length);
369#if defined(CONFIG_CMD_PCAP)
370 if (ret >= 0)
371 pcap_post(packet, length, true);
372#endif
373 return ret;
374}
375
376int eth_rx(void)
377{
378 if (!eth_current)
379 return -ENODEV;
380
381 return eth_current->recv(eth_current);
382}
383
384#ifdef CONFIG_API
385static void eth_save_packet(void *packet, int length)
386{
387 char *p = packet;
388 int i;
389
390 if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
391 return;
392
393 if (PKTSIZE < length)
394 return;
395
396 for (i = 0; i < length; i++)
397 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
398
399 eth_rcv_bufs[eth_rcv_last].length = length;
400 eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
401}
402
403int eth_receive(void *packet, int length)
404{
405 char *p = packet;
406 void *pp = push_packet;
407 int i;
408
409 if (eth_rcv_current == eth_rcv_last) {
410 push_packet = eth_save_packet;
411 eth_rx();
412 push_packet = pp;
413
414 if (eth_rcv_current == eth_rcv_last)
415 return -1;
416 }
417
418 length = min(eth_rcv_bufs[eth_rcv_current].length, length);
419
420 for (i = 0; i < length; i++)
421 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
422
423 eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
424 return length;
425}
426#endif
427
