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coresight-stm.h (746B) - Raw

      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