eth.c 6.1 KB

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  1. /*
  2. * (C) Copyright 2001, 2002
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #include <common.h>
  24. #include <command.h>
  25. #include <net.h>
  26. #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
  27. #ifdef CFG_GT_6426x
  28. extern int gt6426x_eth_initialize(bd_t *bis);
  29. #endif
  30. extern int eepro100_initialize(bd_t*);
  31. extern int natsemi_initialize(bd_t*);
  32. extern int ns8382x_initialize(bd_t*);
  33. extern int dc21x4x_initialize(bd_t*);
  34. extern int eth_3com_initialize(bd_t*);
  35. extern int pcnet_initialize(bd_t*);
  36. extern int fec_initialize(bd_t*);
  37. extern int scc_initialize(bd_t*);
  38. extern int inca_switch_initialize(bd_t*);
  39. extern int plb2800_eth_initialize(bd_t*);
  40. static struct eth_device *eth_devices, *eth_current;
  41. struct eth_device *eth_get_dev(void)
  42. {
  43. return eth_current;
  44. }
  45. int eth_get_dev_index (void)
  46. {
  47. struct eth_device *dev;
  48. int num = 0;
  49. if (!eth_devices) {
  50. return (-1);
  51. }
  52. for (dev = eth_devices; dev; dev = dev->next) {
  53. if (dev == eth_current)
  54. break;
  55. ++num;
  56. }
  57. if (dev) {
  58. return (num);
  59. }
  60. return (0);
  61. }
  62. int eth_register(struct eth_device* dev)
  63. {
  64. struct eth_device *d;
  65. if (!eth_devices) {
  66. eth_current = eth_devices = dev;
  67. } else {
  68. for (d=eth_devices; d->next!=eth_devices; d=d->next);
  69. d->next = dev;
  70. }
  71. dev->state = ETH_STATE_INIT;
  72. dev->next = eth_devices;
  73. return 0;
  74. }
  75. int eth_initialize(bd_t *bis)
  76. {
  77. unsigned char enetvar[32], env_enetaddr[6];
  78. int i, eth_number = 0;
  79. char *tmp, *end;
  80. eth_devices = NULL;
  81. eth_current = NULL;
  82. #ifdef CONFIG_INCA_IP_SWITCH
  83. inca_switch_initialize(bis);
  84. #endif
  85. #ifdef CONFIG_PLB2800_ETHER
  86. plb2800_eth_initialize(bis);
  87. #endif
  88. #ifdef CONFIG_EEPRO100
  89. eepro100_initialize(bis);
  90. #endif
  91. #ifdef CONFIG_TULIP
  92. dc21x4x_initialize(bis);
  93. #endif
  94. #ifdef CONFIG_3COM
  95. eth_3com_initialize(bis);
  96. #endif
  97. #ifdef CONFIG_PCNET
  98. pcnet_initialize(bis);
  99. #endif
  100. #ifdef CFG_GT_6426x
  101. gt6426x_eth_initialize(bis);
  102. #endif
  103. #ifdef CONFIG_NATSEMI
  104. natsemi_initialize(bis);
  105. #endif
  106. #ifdef CONFIG_NS8382X
  107. ns8382x_initialize(bis);
  108. #endif
  109. #ifdef SCC_ENET
  110. scc_initialize(bis);
  111. #endif
  112. #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
  113. fec_initialize(bis);
  114. #endif
  115. if (!eth_devices) {
  116. puts ("No ethernet found.\n");
  117. } else {
  118. struct eth_device *dev = eth_devices;
  119. char *ethprime = getenv ("ethprime");
  120. do {
  121. if (eth_number)
  122. puts (", ");
  123. printf("%s", dev->name);
  124. if (ethprime && strcmp (dev->name, ethprime) == 0) {
  125. eth_current = dev;
  126. puts (" [PRIME]");
  127. }
  128. sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
  129. tmp = getenv (enetvar);
  130. for (i=0; i<6; i++) {
  131. env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
  132. if (tmp)
  133. tmp = (*end) ? end+1 : end;
  134. }
  135. if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
  136. if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
  137. memcmp(dev->enetaddr, env_enetaddr, 6))
  138. {
  139. printf("\nWarning: %s MAC addresses don't match:\n", dev->name);
  140. printf("Address in SROM is "
  141. "%02X:%02X:%02X:%02X:%02X:%02X\n",
  142. dev->enetaddr[0], dev->enetaddr[1],
  143. dev->enetaddr[2], dev->enetaddr[3],
  144. dev->enetaddr[4], dev->enetaddr[5]);
  145. printf("Address in environment is "
  146. "%02X:%02X:%02X:%02X:%02X:%02X\n",
  147. env_enetaddr[0], env_enetaddr[1],
  148. env_enetaddr[2], env_enetaddr[3],
  149. env_enetaddr[4], env_enetaddr[5]);
  150. }
  151. memcpy(dev->enetaddr, env_enetaddr, 6);
  152. }
  153. eth_number++;
  154. dev = dev->next;
  155. } while(dev != eth_devices);
  156. putc ('\n');
  157. }
  158. return eth_number;
  159. }
  160. void eth_set_enetaddr(int num, char *addr) {
  161. struct eth_device *dev;
  162. unsigned char enetaddr[6];
  163. char *end;
  164. int i;
  165. #ifdef DEBUG
  166. printf("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
  167. #endif
  168. if (!eth_devices)
  169. return;
  170. for (i=0; i<6; i++) {
  171. enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
  172. if (addr)
  173. addr = (*end) ? end+1 : end;
  174. }
  175. dev = eth_devices;
  176. while(num-- > 0) {
  177. dev = dev->next;
  178. if (dev == eth_devices)
  179. return;
  180. }
  181. #ifdef DEBUG
  182. printf("Setting new HW address on %s\n", dev->name);
  183. printf("New Address is "
  184. "%02X:%02X:%02X:%02X:%02X:%02X\n",
  185. dev->enetaddr[0], dev->enetaddr[1],
  186. dev->enetaddr[2], dev->enetaddr[3],
  187. dev->enetaddr[4], dev->enetaddr[5]);
  188. #endif
  189. memcpy(dev->enetaddr, enetaddr, 6);
  190. }
  191. int eth_init(bd_t *bis)
  192. {
  193. struct eth_device* old_current;
  194. if (!eth_current)
  195. return 0;
  196. old_current = eth_current;
  197. do {
  198. #ifdef DEBUG
  199. printf("Trying %s\n", eth_current->name);
  200. #endif
  201. if (eth_current->init(eth_current, bis)) {
  202. eth_current->state = ETH_STATE_ACTIVE;
  203. return 1;
  204. }
  205. #ifdef DEBUG
  206. puts ("FAIL\n");
  207. #endif
  208. eth_try_another(0);
  209. } while (old_current != eth_current);
  210. return 0;
  211. }
  212. void eth_halt(void)
  213. {
  214. if (!eth_current)
  215. return;
  216. eth_current->halt(eth_current);
  217. eth_current->state = ETH_STATE_PASSIVE;
  218. }
  219. int eth_send(volatile void *packet, int length)
  220. {
  221. if (!eth_current)
  222. return -1;
  223. return eth_current->send(eth_current, packet, length);
  224. }
  225. int eth_rx(void)
  226. {
  227. if (!eth_current)
  228. return -1;
  229. return eth_current->recv(eth_current);
  230. }
  231. void eth_try_another(int first_restart)
  232. {
  233. static struct eth_device *first_failed = NULL;
  234. if (!eth_current)
  235. return;
  236. if (first_restart)
  237. {
  238. first_failed = eth_current;
  239. }
  240. eth_current = eth_current->next;
  241. if (first_failed == eth_current)
  242. {
  243. NetRestartWrap = 1;
  244. }
  245. }
  246. #endif