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  1. /***************************************************************************
  2. * Copyright (C) 2005 by Dominic Rath *
  3. * Dominic.Rath@gmx.de *
  4. * *
  5. * Copyright (C) 2007,2008 √ėyvind Harboe *
  6. * oyvind.harboe@zylin.com *
  7. * *
  8. * Copyright (C) 2009 Zachary T Welch *
  9. * zw@superlucidity.net *
  10. * *
  11. * This program is free software; you can redistribute it and/or modify *
  12. * it under the terms of the GNU General Public License as published by *
  13. * the Free Software Foundation; either version 2 of the License, or *
  14. * (at your option) any later version. *
  15. * *
  16. * This program is distributed in the hope that it will be useful, *
  17. * but WITHOUT ANY WARRANTY; without even the implied warranty of *
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
  19. * GNU General Public License for more details. *
  20. * *
  21. * You should have received a copy of the GNU General Public License *
  22. * along with this program; if not, write to the *
  23. * Free Software Foundation, Inc., *
  24. * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
  25. ***************************************************************************/
  26. #ifndef MINIDRIVER_H
  27. #define MINIDRIVER_H
  28. /**
  29. * @page jtagminidriver JTAG Mini-Driver
  30. *
  31. * The JTAG minidriver interface allows the definition of alternate
  32. * interface functions, instead of the built-in asynchronous driver
  33. * module that is used by the standard JTAG interface drivers.
  34. *
  35. * In addtion to the functions defined in the @c minidriver.h file, the
  36. * @c jtag_minidriver.h file must declare the following functions (or
  37. * define static inline versions of them):
  38. * - jtag_add_callback
  39. * - jtag_add_callback4
  40. * - interface_jtag_add_dr_out
  41. *
  42. * The following core functions are declared in this file for use by
  43. * the minidriver and do @b not need to be defined by an implementation:
  44. * - default_interface_jtag_execute_queue()
  45. */
  46. // this header will be provided by the minidriver implementation,
  47. // and it may provide additional declarations that must be defined.
  48. #include <jtag/minidriver_imp.h>
  49. int interface_jtag_add_ir_scan(
  50. int num_fields, const struct scan_field* fields,
  51. tap_state_t endstate);
  52. int interface_jtag_add_plain_ir_scan(
  53. int num_fields, const struct scan_field* fields,
  54. tap_state_t endstate);
  55. int interface_jtag_add_dr_scan(
  56. int num_fields, const struct scan_field* fields,
  57. tap_state_t endstate);
  58. int interface_jtag_add_plain_dr_scan(
  59. int num_fields, const struct scan_field* fields,
  60. tap_state_t endstate);
  61. int interface_jtag_add_tlr(void);
  62. int interface_jtag_add_pathmove(int num_states, const tap_state_t* path);
  63. int interface_jtag_add_runtest(int num_cycles, tap_state_t endstate);
  64. /**
  65. * This drives the actual srst and trst pins. srst will always be 0
  66. * if jtag_reset_config & RESET_SRST_PULLS_TRST != 0 and ditto for
  67. * trst.
  68. *
  69. * the higher level jtag_add_reset will invoke jtag_add_tlr() if
  70. * approperiate
  71. */
  72. int interface_jtag_add_reset(int trst, int srst);
  73. int interface_jtag_add_sleep(uint32_t us);
  74. int interface_jtag_add_clocks(int num_cycles);
  75. int interface_jtag_execute_queue(void);
  76. /**
  77. * Calls the interface callback to execute the queue. This routine
  78. * is used by the JTAG driver layer and should not be called directly.
  79. */
  80. int default_interface_jtag_execute_queue(void);
  81. #endif // MINIDRIVER_H