/* 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 This has been replaced by drivers using a dynamic allocation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) (0 x10 + (cpu * 2 ))
/*
* Below are the definition of bit offsets for perf option , and works as
* arbitrary values for all ETM versions .
*
* Most of them are orignally from ETMv3 . 5 / PTM ' s ETMCR config , therefore ,
* ETMv3 . 5 / PTM doesn ' t define ETMCR config bits with prefix " ETM3_ " and
* directly use below macros as config bits .
*/
#define ETM_OPT_BRANCH_BROADCAST 8
#define ETM_OPT_CYCACC 12
#define ETM_OPT_CTXTID 14
#define ETM_OPT_CTXTID2 15
#define ETM_OPT_TS 28
#define ETM_OPT_RETSTK 29
/* ETMv4 CONFIGR programming bits for the ETM OPTs */
#define ETM4_CFG_BIT_BB 3
#define ETM4_CFG_BIT_CYCACC 4
#define ETM4_CFG_BIT_CTXTID 6
#define ETM4_CFG_BIT_VMID 7
#define ETM4_CFG_BIT_TS 11
#define ETM4_CFG_BIT_RETSTK 12
#define ETM4_CFG_BIT_VMID_OPT 15
/*
* 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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