eth_common.c 3.0 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 <bootstage.h>
  9. #include <dm.h>
  10. #include <env.h>
  11. #include <miiphy.h>
  12. #include <net.h>
  13. #include "eth_internal.h"
  14. int eth_env_get_enetaddr_by_index(const char *base_name, int index,
  15. uchar *enetaddr)
  16. {
  17. char enetvar[32];
  18. sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
  19. return eth_env_get_enetaddr(enetvar, enetaddr);
  20. }
  21. int eth_env_set_enetaddr_by_index(const char *base_name, int index,
  22. uchar *enetaddr)
  23. {
  24. char enetvar[32];
  25. sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
  26. return eth_env_set_enetaddr(enetvar, enetaddr);
  27. }
  28. void eth_common_init(void)
  29. {
  30. bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
  31. #if CONFIG_IS_ENABLED(ETH)
  32. #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
  33. miiphy_init();
  34. #endif
  35. #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_PHYLIB)
  36. phy_init();
  37. #endif
  38. #endif
  39. }
  40. int eth_mac_skip(int index)
  41. {
  42. char enetvar[15];
  43. char *skip_state;
  44. sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
  45. skip_state = env_get(enetvar);
  46. return skip_state != NULL;
  47. }
  48. void eth_current_changed(void)
  49. {
  50. char *act = env_get("ethact");
  51. char *ethrotate;
  52. /*
  53. * The call to eth_get_dev() below has a side effect of rotating
  54. * ethernet device if uc_priv->current == NULL. This is not what
  55. * we want when 'ethrotate' variable is 'no'.
  56. */
  57. ethrotate = env_get("ethrotate");
  58. if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
  59. return;
  60. /* update current ethernet name */
  61. if (eth_get_dev()) {
  62. if (act == NULL || strcmp(act, eth_get_name()) != 0)
  63. env_set("ethact", eth_get_name());
  64. }
  65. /*
  66. * remove the variable completely if there is no active
  67. * interface
  68. */
  69. else if (act != NULL)
  70. env_set("ethact", NULL);
  71. }
  72. void eth_try_another(int first_restart)
  73. {
  74. static void *first_failed;
  75. char *ethrotate;
  76. /*
  77. * Do not rotate between network interfaces when
  78. * 'ethrotate' variable is set to 'no'.
  79. */
  80. ethrotate = env_get("ethrotate");
  81. if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
  82. return;
  83. if (!eth_get_dev())
  84. return;
  85. if (first_restart)
  86. first_failed = eth_get_dev();
  87. eth_set_current_to_next();
  88. eth_current_changed();
  89. if (first_failed == eth_get_dev())
  90. net_restart_wrap = 1;
  91. }
  92. void eth_set_current(void)
  93. {
  94. static char *act;
  95. static int env_changed_id;
  96. int env_id;
  97. env_id = env_get_id();
  98. if ((act == NULL) || (env_changed_id != env_id)) {
  99. act = env_get("ethact");
  100. env_changed_id = env_id;
  101. }
  102. if (act == NULL) {
  103. char *ethprime = env_get("ethprime");
  104. void *dev = NULL;
  105. if (ethprime)
  106. dev = eth_get_dev_by_name(ethprime);
  107. if (dev)
  108. eth_set_dev(dev);
  109. else
  110. eth_set_dev(NULL);
  111. } else {
  112. eth_set_dev(eth_get_dev_by_name(act));
  113. }
  114. eth_current_changed();
  115. }
  116. const char *eth_get_name(void)
  117. {
  118. return eth_get_dev() ? eth_get_dev()->name : "unknown";
  119. }