| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | #ifndef __UAPI_CORESIGHT_STM_H_ |
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| 3 | #define __UAPI_CORESIGHT_STM_H_ |
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| 4 | |
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| 5 | #include <linux/const.h> |
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| 6 | |
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| 7 | #define STM_FLAG_TIMESTAMPED _BITUL(3) |
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| 8 | #define STM_FLAG_MARKED _BITUL(4) |
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| 9 | #define STM_FLAG_GUARANTEED _BITUL(7) |
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| 10 | |
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| 11 | /* |
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| 12 | * The CoreSight STM supports guaranteed and invariant timing |
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| 13 | * transactions. Guaranteed transactions are guaranteed to be |
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| 14 | * traced, this might involve stalling the bus or system to |
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| 15 | * ensure the transaction is accepted by the STM. While invariant |
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| 16 | * timing transactions are not guaranteed to be traced, they |
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| 17 | * will take an invariant amount of time regardless of the |
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| 18 | * state of the STM. |
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| 19 | */ |
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| 20 | enum { |
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| 21 | STM_OPTION_GUARANTEED = 0, |
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| 22 | STM_OPTION_INVARIANT, |
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| 23 | }; |
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| 24 | |
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| 25 | #endif |
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| 26 | |
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