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include/linux/intel-pti.h 1.56 KB
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  /*
   *  Copyright (C) Intel 2011
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   *
   * The PTI (Parallel Trace Interface) driver directs trace data routed from
   * various parts in the system out through the Intel Penwell PTI port and
   * out of the mobile device for analysis with a debugging tool
   * (Lauterbach, Fido). This is part of a solution for the MIPI P1149.7,
   * compact JTAG, standard.
   *
   * This header file will allow other parts of the OS to use the
   * interface to write out it's contents for debugging a mobile system.
   */
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  #ifndef LINUX_INTEL_PTI_H_
  #define LINUX_INTEL_PTI_H_
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  /* offset for last dword of any PTI message. Part of MIPI P1149.7 */
  #define PTI_LASTDWORD_DTS	0x30
  
  /* basic structure used as a write address to the PTI HW */
  struct pti_masterchannel {
  	u8 master;
  	u8 channel;
  };
  
  /* the following functions are defined in misc/pti.c */
  void pti_writedata(struct pti_masterchannel *mc, u8 *buf, int count);
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  struct pti_masterchannel *pti_request_masterchannel(u8 type,
  						    const char *thread_name);
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  void pti_release_masterchannel(struct pti_masterchannel *mc);
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  #endif /* LINUX_INTEL_PTI_H_ */