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 | |