intel-pti.h 1.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) Intel 2011
  4. *
  5. * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  6. *
  7. * The PTI (Parallel Trace Interface) driver directs trace data routed from
  8. * various parts in the system out through the Intel Penwell PTI port and
  9. * out of the mobile device for analysis with a debugging tool
  10. * (Lauterbach, Fido). This is part of a solution for the MIPI P1149.7,
  11. * compact JTAG, standard.
  12. *
  13. * This header file will allow other parts of the OS to use the
  14. * interface to write out it's contents for debugging a mobile system.
  15. */
  16. #ifndef LINUX_INTEL_PTI_H_
  17. #define LINUX_INTEL_PTI_H_
  18. /* offset for last dword of any PTI message. Part of MIPI P1149.7 */
  19. #define PTI_LASTDWORD_DTS 0x30
  20. /* basic structure used as a write address to the PTI HW */
  21. struct pti_masterchannel {
  22. u8 master;
  23. u8 channel;
  24. };
  25. /* the following functions are defined in misc/pti.c */
  26. void pti_writedata(struct pti_masterchannel *mc, u8 *buf, int count);
  27. struct pti_masterchannel *pti_request_masterchannel(u8 type,
  28. const char *thread_name);
  29. void pti_release_masterchannel(struct pti_masterchannel *mc);
  30. #endif /* LINUX_INTEL_PTI_H_ */