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 <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 defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
  32. miiphy_init();
  33. #endif
  34. #ifdef CONFIG_PHYLIB
  35. phy_init();
  36. #endif
  37. }
  38. int eth_mac_skip(int index)
  39. {
  40. char enetvar[15];
  41. char *skip_state;
  42. sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
  43. skip_state = env_get(enetvar);
  44. return skip_state != NULL;
  45. }
  46. void eth_current_changed(void)
  47. {
  48. char *act = env_get("ethact");
  49. char *ethrotate;
  50. /*
  51. * The call to eth_get_dev() below has a side effect of rotating
  52. * ethernet device if uc_priv->current == NULL. This is not what
  53. * we want when 'ethrotate' variable is 'no'.
  54. */
  55. ethrotate = env_get("ethrotate");
  56. if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
  57. return;
  58. /* update current ethernet name */
  59. if (eth_get_dev()) {
  60. if (act == NULL || strcmp(act, eth_get_name()) != 0)
  61. env_set("ethact", eth_get_name());
  62. }
  63. /*
  64. * remove the variable completely if there is no active
  65. * interface
  66. */
  67. else if (act != NULL)
  68. env_set("ethact", NULL);
  69. }
  70. void eth_try_another(int first_restart)
  71. {
  72. static void *first_failed;
  73. char *ethrotate;
  74. /*
  75. * Do not rotate between network interfaces when
  76. * 'ethrotate' variable is set to 'no'.
  77. */
  78. ethrotate = env_get("ethrotate");
  79. if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
  80. return;
  81. if (!eth_get_dev())
  82. return;
  83. if (first_restart)
  84. first_failed = eth_get_dev();
  85. eth_set_current_to_next();
  86. eth_current_changed();
  87. if (first_failed == eth_get_dev())
  88. net_restart_wrap = 1;
  89. }
  90. void eth_set_current(void)
  91. {
  92. static char *act;
  93. static int env_changed_id;
  94. int env_id;
  95. env_id = env_get_id();
  96. if ((act == NULL) || (env_changed_id != env_id)) {
  97. act = env_get("ethact");
  98. env_changed_id = env_id;
  99. }
  100. if (act == NULL) {
  101. char *ethprime = env_get("ethprime");
  102. void *dev = NULL;
  103. if (ethprime)
  104. dev = eth_get_dev_by_name(ethprime);
  105. if (dev)
  106. eth_set_dev(dev);
  107. else
  108. eth_set_dev(NULL);
  109. } else {
  110. eth_set_dev(eth_get_dev_by_name(act));
  111. }
  112. eth_current_changed();
  113. }
  114. const char *eth_get_name(void)
  115. {
  116. return eth_get_dev() ? eth_get_dev()->name : "unknown";
  117. }