[linux-block.git] / include / uapi / linux / coresight-stm.h

/* 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
Commit	Line	Data
6f52b16c	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
237483aa PP	2	#ifndef __UAPI_CORESIGHT_STM_H_
	3	#define __UAPI_CORESIGHT_STM_H_
	4
9b6eaaf3 ES	5	#include <linux/const.h>
	6
	7	#define STM_FLAG_TIMESTAMPED _BITUL(3)
4af8b3d3	8	#define STM_FLAG_MARKED _BITUL(4)
9b6eaaf3	9	#define STM_FLAG_GUARANTEED _BITUL(7)
237483aa PP	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