diff options
Diffstat (limited to 'include/uapi/linux/coresight-stm.h')
-rw-r--r-- | include/uapi/linux/coresight-stm.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/uapi/linux/coresight-stm.h b/include/uapi/linux/coresight-stm.h new file mode 100644 index 000000000..7ff3709c0 --- /dev/null +++ b/include/uapi/linux/coresight-stm.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef __UAPI_CORESIGHT_STM_H_ +#define __UAPI_CORESIGHT_STM_H_ + +#include <linux/const.h> + +#define STM_FLAG_TIMESTAMPED _BITUL(3) +#define STM_FLAG_MARKED _BITUL(4) +#define STM_FLAG_GUARANTEED _BITUL(7) + +/* + * The CoreSight STM supports guaranteed and invariant timing + * transactions. Guaranteed transactions are guaranteed to be + * traced, this might involve stalling the bus or system to + * ensure the transaction is accepted by the STM. While invariant + * timing transactions are not guaranteed to be traced, they + * will take an invariant amount of time regardless of the + * state of the STM. + */ +enum { + STM_OPTION_GUARANTEED = 0, + STM_OPTION_INVARIANT, +}; + +#endif |