eth_common.c 2.9 KB

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