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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright(C) 2015 Linaro Limited. All rights reserved.
* Author: Mathieu Poirier <mathieu.poirier@linaro.org>
*/
#ifndef _LINUX_CORESIGHT_PMU_H
#define _LINUX_CORESIGHT_PMU_H
#include <linux/bits.h>
#define CORESIGHT_ETM_PMU_NAME "cs_etm"
/*
* The legacy Trace ID system based on fixed calculation from the cpu
* number. This has been replaced by drivers using a dynamic allocation
* system - but need to retain the legacy algorithm for backward comparibility
* in certain situations:-
* a) new perf running on older systems that generate the legacy mapping
* b) older tools that may not update at the same time as the kernel.
*/
#define CORESIGHT_LEGACY_CPU_TRACE_ID(cpu) (0x10 + (cpu * 2))
/*
* Interpretation of the PERF_RECORD_AUX_OUTPUT_HW_ID payload.
* Used to associate a CPU with the CoreSight Trace ID.
* [07:00] - Trace ID - uses 8 bits to make value easy to read in file.
* [39:08] - Sink ID - as reported in /sys/bus/event_source/devices/cs_etm/sinks/
* Added in minor version 1.
* [55:40] - Unused (SBZ)
* [59:56] - Minor Version - previously existing fields are compatible with
* all minor versions.
* [63:60] - Major Version - previously existing fields mean different things
* in new major versions.
*/
#define CS_AUX_HW_ID_TRACE_ID_MASK GENMASK_ULL(7, 0)
#define CS_AUX_HW_ID_SINK_ID_MASK GENMASK_ULL(39, 8)
#define CS_AUX_HW_ID_MINOR_VERSION_MASK GENMASK_ULL(59, 56)
#define CS_AUX_HW_ID_MAJOR_VERSION_MASK GENMASK_ULL(63, 60)
#define CS_AUX_HW_ID_MAJOR_VERSION 0
#define CS_AUX_HW_ID_MINOR_VERSION 1
#endif
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