include/uapi/linux/coresight-stm.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef __UAPI_CORESIGHT_STM_H_
   3 #define __UAPI_CORESIGHT_STM_H_
   4
   5 #include <linux/const.h>
   6
   7 #define STM_FLAG_TIMESTAMPED   _BITUL(3)
   8 #define STM_FLAG_MARKED        _BITUL(4)
   9 #define STM_FLAG_GUARANTEED    _BITUL(7)
  10
  11 /*
  12  * The CoreSight STM supports guaranteed and invariant timing
  13  * transactions.  Guaranteed transactions are guaranteed to be
  14  * traced, this might involve stalling the bus or system to
  15  * ensure the transaction is accepted by the STM.  While invariant
  16  * timing transactions are not guaranteed to be traced, they
  17  * will take an invariant amount of time regardless of the
  18  * state of the STM.
  19  */
  20 enum {
  21         STM_OPTION_GUARANTEED = 0,
  22         STM_OPTION_INVARIANT,
  23 };
  24
  25 #endif