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| 2 | |
| 3 | * Copyright(C) 2015 Linaro Limited. All rights reserved.
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| 4 | * Author: Mathieu Poirier <[email protected]>
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| 5 |
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| 6 |
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| 7 | #ifndef _LINUX_CORESIGHT_PMU_H
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| 8 | #define _LINUX_CORESIGHT_PMU_H
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| 9 |
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| 10 | #include <linux/bits.h>
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| 11 |
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| 12 | #define CORESIGHT_ETM_PMU_NAME "cs_etm"
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| 13 |
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| 14 | |
| 15 | * The legacy Trace ID system based on fixed calculation from the cpu
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| 16 | * number. This has been replaced by drivers using a dynamic allocation
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| 17 | * system - but need to retain the legacy algorithm for backward comparibility
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| 18 | * in certain situations:-
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| 19 | * a) new perf running on older systems that generate the legacy mapping
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| 20 | * b) older tools that may not update at the same time as the kernel.
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| 21 |
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| 22 | #define CORESIGHT_LEGACY_CPU_TRACE_ID(cpu) (0x10 + (cpu * 2))
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| 23 |
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| 24 | |
| 25 | * Interpretation of the PERF_RECORD_AUX_OUTPUT_HW_ID payload.
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| 26 | * Used to associate a CPU with the CoreSight Trace ID.
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| 27 | * [07:00] - Trace ID - uses 8 bits to make value easy to read in file.
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| 28 | * [39:08] - Sink ID - as reported in /sys/bus/event_source/devices/cs_etm/sinks/
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| 29 | * Added in minor version 1.
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| 30 | * [55:40] - Unused (SBZ)
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| 31 | * [59:56] - Minor Version - previously existing fields are compatible with
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| 32 | * all minor versions.
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| 33 | * [63:60] - Major Version - previously existing fields mean different things
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| 34 | * in new major versions.
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| 35 |
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| 36 | #define CS_AUX_HW_ID_TRACE_ID_MASK GENMASK_ULL(7, 0)
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| 37 | #define CS_AUX_HW_ID_SINK_ID_MASK GENMASK_ULL(39, 8)
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| 38 |
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| 39 | #define CS_AUX_HW_ID_MINOR_VERSION_MASK GENMASK_ULL(59, 56)
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| 40 | #define CS_AUX_HW_ID_MAJOR_VERSION_MASK GENMASK_ULL(63, 60)
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| 41 |
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| 42 | #define CS_AUX_HW_ID_MAJOR_VERSION 0
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| 43 | #define CS_AUX_HW_ID_MINOR_VERSION 1
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| 44 |
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| 45 | #endif
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