/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright(C) 2015 Linaro Limited. All rights reserved. * Author: Mathieu Poirier */ #ifndef INCLUDE__UTIL_PERF_CS_ETM_H__ #define INCLUDE__UTIL_PERF_CS_ETM_H__ #include "util/event.h" #include struct perf_session; /* * 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. * * New 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. */ #define CS_HEADER_CURRENT_VERSION 1 /* 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_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) /* * ETMv3 exception encoding number: * See Embedded Trace Macrocell specification (ARM IHI 0014Q) * 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 0064D) * 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; u8 last_instr_cond; u8 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; 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 0xdeadbeefdeadbeefUL #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 0x3030303030303030ULL #define __perf_cs_etmv4_magic 0x4040404040404040ULL #define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64)) #define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64)) #ifdef HAVE_CSTRACE_SUPPORT int cs_etm__process_auxtrace_info(union perf_event *event, struct perf_session *session); int cs_etm__get_cpu(u8 trace_chan_id, int *cpu); int cs_etm__get_pid_fmt(u8 trace_chan_id, u64 *pid_fmt); int cs_etm__etmq_set_tid(struct cs_etm_queue *etmq, pid_t tid, u8 trace_chan_id); 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); #else static inline int cs_etm__process_auxtrace_info(union perf_event *event __maybe_unused, struct perf_session *session __maybe_unused) { return -1; } static inline int cs_etm__get_cpu(u8 trace_chan_id __maybe_unused, int *cpu __maybe_unused) { return -1; } static inline int cs_etm__etmq_set_tid( struct cs_etm_queue *etmq __maybe_unused, pid_t tid __maybe_unused, u8 trace_chan_id __maybe_unused) { return -1; } static inline bool cs_etm__etmq_is_timeless( struct cs_etm_queue *etmq __maybe_unused) { /* What else to return? */ return true; } static inline void cs_etm__etmq_set_traceid_queue_timestamp( struct cs_etm_queue *etmq __maybe_unused, u8 trace_chan_id __maybe_unused) {} static inline struct cs_etm_packet_queue *cs_etm__etmq_get_packet_queue( struct cs_etm_queue *etmq __maybe_unused, u8 trace_chan_id __maybe_unused) { return NULL; } #endif #endif