eth_common.c 3.4 KB

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  1. /*
  2. * (C) Copyright 2001-2015
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. * Joe Hershberger, National Instruments
  5. *
  6. * SPDX-License-Identifier: GPL-2.0+
  7. */
  8. #include <common.h>
  9. #include <dm.h>
  10. #include <miiphy.h>
  11. #include <net.h>
  12. #include "eth_internal.h"
  13. void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
  14. {
  15. char *end;
  16. int i;
  17. for (i = 0; i < 6; ++i) {
  18. enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
  19. if (addr)
  20. addr = (*end) ? end + 1 : end;
  21. }
  22. }
  23. int eth_getenv_enetaddr(const char *name, uchar *enetaddr)
  24. {
  25. eth_parse_enetaddr(getenv(name), enetaddr);
  26. return is_valid_ethaddr(enetaddr);
  27. }
  28. int eth_setenv_enetaddr(const char *name, const uchar *enetaddr)
  29. {
  30. char buf[ARP_HLEN_ASCII + 1];
  31. if (eth_getenv_enetaddr(name, (uchar *)buf))
  32. return -EEXIST;
  33. sprintf(buf, "%pM", enetaddr);
  34. return setenv(name, buf);
  35. }
  36. int eth_getenv_enetaddr_by_index(const char *base_name, int index,
  37. uchar *enetaddr)
  38. {
  39. char enetvar[32];
  40. sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
  41. return eth_getenv_enetaddr(enetvar, enetaddr);
  42. }
  43. int eth_setenv_enetaddr_by_index(const char *base_name, int index,
  44. uchar *enetaddr)
  45. {
  46. char enetvar[32];
  47. sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
  48. return eth_setenv_enetaddr(enetvar, enetaddr);
  49. }
  50. void eth_common_init(void)
  51. {
  52. bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
  53. #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
  54. miiphy_init();
  55. #endif
  56. #ifdef CONFIG_PHYLIB
  57. phy_init();
  58. #endif
  59. }
  60. int eth_mac_skip(int index)
  61. {
  62. char enetvar[15];
  63. char *skip_state;
  64. sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
  65. skip_state = getenv(enetvar);
  66. return skip_state != NULL;
  67. }
  68. void eth_current_changed(void)
  69. {
  70. char *act = getenv("ethact");
  71. char *ethrotate;
  72. /*
  73. * The call to eth_get_dev() below has a side effect of rotating
  74. * ethernet device if uc_priv->current == NULL. This is not what
  75. * we want when 'ethrotate' variable is 'no'.
  76. */
  77. ethrotate = getenv("ethrotate");
  78. if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
  79. return;
  80. /* update current ethernet name */
  81. if (eth_get_dev()) {
  82. if (act == NULL || strcmp(act, eth_get_name()) != 0)
  83. setenv("ethact", eth_get_name());
  84. }
  85. /*
  86. * remove the variable completely if there is no active
  87. * interface
  88. */
  89. else if (act != NULL)
  90. setenv("ethact", NULL);
  91. }
  92. void eth_try_another(int first_restart)
  93. {
  94. static void *first_failed;
  95. char *ethrotate;
  96. /*
  97. * Do not rotate between network interfaces when
  98. * 'ethrotate' variable is set to 'no'.
  99. */
  100. ethrotate = getenv("ethrotate");
  101. if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
  102. return;
  103. if (!eth_get_dev())
  104. return;
  105. if (first_restart)
  106. first_failed = eth_get_dev();
  107. eth_set_current_to_next();
  108. eth_current_changed();
  109. if (first_failed == eth_get_dev())
  110. net_restart_wrap = 1;
  111. }
  112. void eth_set_current(void)
  113. {
  114. static char *act;
  115. static int env_changed_id;
  116. int env_id;
  117. env_id = get_env_id();
  118. if ((act == NULL) || (env_changed_id != env_id)) {
  119. act = getenv("ethact");
  120. env_changed_id = env_id;
  121. }
  122. if (act == NULL) {
  123. char *ethprime = getenv("ethprime");
  124. void *dev = NULL;
  125. if (ethprime)
  126. dev = eth_get_dev_by_name(ethprime);
  127. if (dev)
  128. eth_set_dev(dev);
  129. else
  130. eth_set_dev(NULL);
  131. } else {
  132. eth_set_dev(eth_get_dev_by_name(act));
  133. }
  134. eth_current_changed();
  135. }
  136. const char *eth_get_name(void)
  137. {
  138. return eth_get_dev() ? eth_get_dev()->name : "unknown";
  139. }