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 #define STM_FLAG_TIMESTAMPED BIT(3) 6 #define STM_FLAG_GUARANTEED BIT(7) 7 8 /* 9 * The CoreSight STM supports guaranteed and invariant timing 10 * transactions. Guaranteed transactions are guaranteed to be 11 * traced, this might involve stalling the bus or system to 12 * ensure the transaction is accepted by the STM. While invariant 13 * timing transactions are not guaranteed to be traced, they 14 * will take an invariant amount of time regardless of the 15 * state of the STM. 16 */ 17 enum { 18 STM_OPTION_GUARANTEED = 0, 19 STM_OPTION_INVARIANT, 20 }; 21 22 #endif 23
