linux-headers (unknown)
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
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