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 26