/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright ( C ) 2015 Linaro Limited . All rights reserved .
* Author : Mathieu Poirier < mathieu . poirier @ linaro . org >
*/
#ifndef INCLUDE__UTIL_PERF_CS_ETM_H__
#define INCLUDE__UTIL_PERF_CS_ETM_H__
#include "debug.h"
#include "util/event.h"
#include <linux/bits.h>
struct perf_session;
struct perf_pmu;
/*
* Versioning header in case things need to change in the future . That way
* decoding of old snapshot is still possible .
*/
enum {
/* Starting with 0x0 */
CS_HEADER_VERSION,
/* PMU->type (32 bit), total # of CPUs (32 bit) */
CS_PMU_TYPE_CPUS,
CS_ETM_SNAPSHOT,
CS_HEADER_VERSION_MAX,
};
/*
* Update the version for new format .
*
* Version 1 : format adds a param count to the per cpu metadata .
* This allows easy adding of new metadata parameters .
* Requires that new params always added after current ones .
* Also allows client reader to handle file versions that are different by
* checking the number of params in the file vs the number expected .
*
* Version 2 : Drivers will use PERF_RECORD_AUX_OUTPUT_HW_ID to output
* CoreSight Trace ID . . . . TRACEIDR metadata will be set to legacy values
* but with addition flags .
*/
#define CS_HEADER_CURRENT_VERSION 2
/* Beginning of header common to both ETMv3 and V4 */
enum {
CS_ETM_MAGIC,
CS_ETM_CPU,
/* Number of trace config params in following ETM specific block */
CS_ETM_NR_TRC_PARAMS,
CS_ETM_COMMON_BLK_MAX_V1,
};
/* ETMv3/PTM metadata */
enum {
/* Dynamic, configurable parameters */
CS_ETM_ETMCR = CS_ETM_COMMON_BLK_MAX_V1,
CS_ETM_ETMTRACEIDR,
/* RO, taken from sysFS */
CS_ETM_ETMCCER,
CS_ETM_ETMIDR,
CS_ETM_PRIV_MAX,
};
/* define fixed version 0 length - allow new format reader to read old files. */
#define CS_ETM_NR_TRC_PARAMS_V0 (CS_ETM_ETMIDR - CS_ETM_ETMCR + 1 )
/* ETMv4 metadata */
enum {
/* Dynamic, configurable parameters */
CS_ETMV4_TRCCONFIGR = CS_ETM_COMMON_BLK_MAX_V1,
CS_ETMV4_TRCTRACEIDR,
/* RO, taken from sysFS */
CS_ETMV4_TRCIDR0,
CS_ETMV4_TRCIDR1,
CS_ETMV4_TRCIDR2,
CS_ETMV4_TRCIDR8,
CS_ETMV4_TRCAUTHSTATUS,
CS_ETMV4_TS_SOURCE,
CS_ETMV4_PRIV_MAX,
};
/* define fixed version 0 length - allow new format reader to read old files. */
#define CS_ETMV4_NR_TRC_PARAMS_V0 (CS_ETMV4_TRCAUTHSTATUS - CS_ETMV4_TRCCONFIGR + 1 )
/*
* ETE metadata is ETMv4 plus TRCDEVARCH register and doesn ' t support header V0 since it was
* added in header V1
*/
enum {
/* Dynamic, configurable parameters */
CS_ETE_TRCCONFIGR = CS_ETM_COMMON_BLK_MAX_V1,
CS_ETE_TRCTRACEIDR,
/* RO, taken from sysFS */
CS_ETE_TRCIDR0,
CS_ETE_TRCIDR1,
CS_ETE_TRCIDR2,
CS_ETE_TRCIDR8,
CS_ETE_TRCAUTHSTATUS,
CS_ETE_TRCDEVARCH,
CS_ETE_TS_SOURCE,
CS_ETE_PRIV_MAX
};
/*
* Check for valid CoreSight trace ID . If an invalid value is present in the metadata ,
* then IDs are present in the hardware ID packet in the data file .
*/
#define CS_IS_VALID_TRACE_ID(id) ((id > 0 ) && (id < 0 x70))
/*
* ETMv3 exception encoding number :
* See Embedded Trace Macrocell specification ( ARM IHI 0014 Q )
* table 7 - 12 Encoding of Exception [ 3 : 0 ] for non - ARMv7 - M processors .
*/
enum {
CS_ETMV3_EXC_NONE = 0 ,
CS_ETMV3_EXC_DEBUG_HALT = 1 ,
CS_ETMV3_EXC_SMC = 2 ,
CS_ETMV3_EXC_HYP = 3 ,
CS_ETMV3_EXC_ASYNC_DATA_ABORT = 4 ,
CS_ETMV3_EXC_JAZELLE_THUMBEE = 5 ,
CS_ETMV3_EXC_PE_RESET = 8 ,
CS_ETMV3_EXC_UNDEFINED_INSTR = 9 ,
CS_ETMV3_EXC_SVC = 10 ,
CS_ETMV3_EXC_PREFETCH_ABORT = 11 ,
CS_ETMV3_EXC_DATA_FAULT = 12 ,
CS_ETMV3_EXC_GENERIC = 13 ,
CS_ETMV3_EXC_IRQ = 14 ,
CS_ETMV3_EXC_FIQ = 15 ,
};
/*
* ETMv4 exception encoding number :
* See ARM Embedded Trace Macrocell Architecture Specification ( ARM IHI 0064 D )
* table 6 - 12 Possible values for the TYPE field in an Exception instruction
* trace packet , for ARMv7 - A / R and ARMv8 - A / R PEs .
*/
enum {
CS_ETMV4_EXC_RESET = 0 ,
CS_ETMV4_EXC_DEBUG_HALT = 1 ,
CS_ETMV4_EXC_CALL = 2 ,
CS_ETMV4_EXC_TRAP = 3 ,
CS_ETMV4_EXC_SYSTEM_ERROR = 4 ,
CS_ETMV4_EXC_INST_DEBUG = 6 ,
CS_ETMV4_EXC_DATA_DEBUG = 7 ,
CS_ETMV4_EXC_ALIGNMENT = 10 ,
CS_ETMV4_EXC_INST_FAULT = 11 ,
CS_ETMV4_EXC_DATA_FAULT = 12 ,
CS_ETMV4_EXC_IRQ = 14 ,
CS_ETMV4_EXC_FIQ = 15 ,
CS_ETMV4_EXC_END = 31 ,
};
enum cs_etm_sample_type {
CS_ETM_EMPTY,
CS_ETM_RANGE,
CS_ETM_DISCONTINUITY,
CS_ETM_EXCEPTION,
CS_ETM_EXCEPTION_RET,
};
enum cs_etm_isa {
CS_ETM_ISA_UNKNOWN,
CS_ETM_ISA_A64,
CS_ETM_ISA_A32,
CS_ETM_ISA_T32,
};
struct cs_etm_queue;
struct cs_etm_packet {
enum cs_etm_sample_type sample_type;
enum cs_etm_isa isa;
u64 start_addr;
u64 end_addr;
u32 instr_count;
u32 last_instr_type;
u32 last_instr_subtype;
u32 flags;
u32 exception_number;
bool last_instr_cond;
bool last_instr_taken_branch;
u8 last_instr_size;
u8 trace_chan_id;
int cpu;
};
#define CS_ETM_PACKET_MAX_BUFFER 1024
/*
* When working with per - thread scenarios the process under trace can
* be scheduled on any CPU and as such , more than one traceID may be
* associated with the same process . Since a traceID of ' 0 ' is illegal
* as per the CoreSight architecture , use that specific value to
* identify the queue where all packets ( with any traceID ) are
* aggregated .
*/
#define CS_ETM_PER_THREAD_TRACEID 0
struct cs_etm_packet_queue {
u32 packet_count;
u32 head;
u32 tail;
u32 instr_count;
u64 cs_timestamp; /* Timestamp from trace data, converted to ns if possible */
u64 next_cs_timestamp;
struct cs_etm_packet packet_buffer[CS_ETM_PACKET_MAX_BUFFER];
};
#define KiB(x) ((x) * 1024 )
#define MiB(x) ((x) * 1024 * 1024 )
#define CS_ETM_INVAL_ADDR 0 xdeadbeefdeadbeefUL
#define BMVAL(val, lsb, msb) ((val & GENMASK(msb, lsb)) >> lsb)
#define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_MAX * sizeof (u64))
#define __perf_cs_etmv3_magic 0 x3030303030303030ULL
#define __perf_cs_etmv4_magic 0 x4040404040404040ULL
#define __perf_cs_ete_magic 0 x5050505050505050ULL
#define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof (u64))
#define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof (u64))
#define CS_ETE_PRIV_SIZE (CS_ETE_PRIV_MAX * sizeof (u64))
#define INFO_HEADER_SIZE (sizeof (((struct perf_record_auxtrace_info *)0 )->type) + \
sizeof (((struct perf_record_auxtrace_info *)0 )->reserved__))
/* CoreSight trace ID is currently the bottom 7 bits of the value */
#define CORESIGHT_TRACE_ID_VAL_MASK GENMASK(6 , 0 )
int cs_etm__process_auxtrace_info(union perf_event *event,
struct perf_session *session);
void cs_etm_get_default_config(const struct perf_pmu *pmu, struct perf_event_attr *attr);
enum cs_etm_pid_fmt {
CS_ETM_PIDFMT_NONE,
CS_ETM_PIDFMT_CTXTID,
CS_ETM_PIDFMT_CTXTID2
};
#ifdef HAVE_CSTRACE_SUPPORT
#include <opencsd/ocsd_if_types.h>
int cs_etm__get_cpu(struct cs_etm_queue *etmq, u8 trace_chan_id, int *cpu);
enum cs_etm_pid_fmt cs_etm__get_pid_fmt(struct cs_etm_queue *etmq);
int cs_etm__etmq_set_tid_el(struct cs_etm_queue *etmq, pid_t tid,
u8 trace_chan_id, ocsd_ex_level el);
bool cs_etm__etmq_is_timeless(struct cs_etm_queue *etmq);
void cs_etm__etmq_set_traceid_queue_timestamp(struct cs_etm_queue *etmq,
u8 trace_chan_id);
struct cs_etm_packet_queue
*cs_etm__etmq_get_packet_queue(struct cs_etm_queue *etmq, u8 trace_chan_id);
int cs_etm__process_auxtrace_info_full(union perf_event *event __maybe_unused,
struct perf_session *session __maybe_unused);
u64 cs_etm__convert_sample_time(struct cs_etm_queue *etmq, u64 cs_timestamp);
#else
static inline int
cs_etm__process_auxtrace_info_full(union perf_event *event __maybe_unused,
struct perf_session *session __maybe_unused)
{
pr_err("\nCS ETM Trace: OpenCSD is not linked in, please recompile with CORESIGHT=1\n" );
return -1 ;
}
#endif
#endif
Messung V0.5 in Prozent C=91 H=100 G=95
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
¤
*© Formatika GbR, Deutschland