18a9fd832SMathieu Poirier /* SPDX-License-Identifier: GPL-2.0 */ 2a818c563SMathieu Poirier /* 3a818c563SMathieu Poirier * Copyright(C) 2015 Linaro Limited. All rights reserved. 4a818c563SMathieu Poirier * Author: Mathieu Poirier <mathieu.poirier@linaro.org> 5a818c563SMathieu Poirier */ 6a818c563SMathieu Poirier 7a818c563SMathieu Poirier #ifndef INCLUDE__UTIL_PERF_CS_ETM_H__ 8a818c563SMathieu Poirier #define INCLUDE__UTIL_PERF_CS_ETM_H__ 9a818c563SMathieu Poirier 10440a23b3SMathieu Poirier #include "util/event.h" 11965e176fSArnaldo Carvalho de Melo #include <linux/bits.h> 12440a23b3SMathieu Poirier 13f2a39fe8SArnaldo Carvalho de Melo struct perf_session; 14f2a39fe8SArnaldo Carvalho de Melo 15a818c563SMathieu Poirier /* Versionning header in case things need tro change in the future. That way 16a818c563SMathieu Poirier * decoding of old snapshot is still possible. 17a818c563SMathieu Poirier */ 18a818c563SMathieu Poirier enum { 19a818c563SMathieu Poirier /* Starting with 0x0 */ 20a818c563SMathieu Poirier CS_HEADER_VERSION_0, 21a818c563SMathieu Poirier /* PMU->type (32 bit), total # of CPUs (32 bit) */ 22a818c563SMathieu Poirier CS_PMU_TYPE_CPUS, 23a818c563SMathieu Poirier CS_ETM_SNAPSHOT, 24a818c563SMathieu Poirier CS_HEADER_VERSION_0_MAX, 25a818c563SMathieu Poirier }; 26a818c563SMathieu Poirier 27a818c563SMathieu Poirier /* Beginning of header common to both ETMv3 and V4 */ 28a818c563SMathieu Poirier enum { 29a818c563SMathieu Poirier CS_ETM_MAGIC, 30a818c563SMathieu Poirier CS_ETM_CPU, 31a818c563SMathieu Poirier }; 32a818c563SMathieu Poirier 33a818c563SMathieu Poirier /* ETMv3/PTM metadata */ 34a818c563SMathieu Poirier enum { 35a818c563SMathieu Poirier /* Dynamic, configurable parameters */ 36a818c563SMathieu Poirier CS_ETM_ETMCR = CS_ETM_CPU + 1, 37a818c563SMathieu Poirier CS_ETM_ETMTRACEIDR, 38a818c563SMathieu Poirier /* RO, taken from sysFS */ 39a818c563SMathieu Poirier CS_ETM_ETMCCER, 40a818c563SMathieu Poirier CS_ETM_ETMIDR, 41a818c563SMathieu Poirier CS_ETM_PRIV_MAX, 42a818c563SMathieu Poirier }; 43a818c563SMathieu Poirier 44a818c563SMathieu Poirier /* ETMv4 metadata */ 45a818c563SMathieu Poirier enum { 46a818c563SMathieu Poirier /* Dynamic, configurable parameters */ 47a818c563SMathieu Poirier CS_ETMV4_TRCCONFIGR = CS_ETM_CPU + 1, 48a818c563SMathieu Poirier CS_ETMV4_TRCTRACEIDR, 49a818c563SMathieu Poirier /* RO, taken from sysFS */ 50a818c563SMathieu Poirier CS_ETMV4_TRCIDR0, 51a818c563SMathieu Poirier CS_ETMV4_TRCIDR1, 52a818c563SMathieu Poirier CS_ETMV4_TRCIDR2, 53a818c563SMathieu Poirier CS_ETMV4_TRCIDR8, 54a818c563SMathieu Poirier CS_ETMV4_TRCAUTHSTATUS, 55a818c563SMathieu Poirier CS_ETMV4_PRIV_MAX, 56a818c563SMathieu Poirier }; 57a818c563SMathieu Poirier 5896dce7f4SLeo Yan /* 5996dce7f4SLeo Yan * ETMv3 exception encoding number: 6096dce7f4SLeo Yan * See Embedded Trace Macrocell spcification (ARM IHI 0014Q) 6196dce7f4SLeo Yan * table 7-12 Encoding of Exception[3:0] for non-ARMv7-M processors. 6296dce7f4SLeo Yan */ 6396dce7f4SLeo Yan enum { 6496dce7f4SLeo Yan CS_ETMV3_EXC_NONE = 0, 6596dce7f4SLeo Yan CS_ETMV3_EXC_DEBUG_HALT = 1, 6696dce7f4SLeo Yan CS_ETMV3_EXC_SMC = 2, 6796dce7f4SLeo Yan CS_ETMV3_EXC_HYP = 3, 6896dce7f4SLeo Yan CS_ETMV3_EXC_ASYNC_DATA_ABORT = 4, 6996dce7f4SLeo Yan CS_ETMV3_EXC_JAZELLE_THUMBEE = 5, 7096dce7f4SLeo Yan CS_ETMV3_EXC_PE_RESET = 8, 7196dce7f4SLeo Yan CS_ETMV3_EXC_UNDEFINED_INSTR = 9, 7296dce7f4SLeo Yan CS_ETMV3_EXC_SVC = 10, 7396dce7f4SLeo Yan CS_ETMV3_EXC_PREFETCH_ABORT = 11, 7496dce7f4SLeo Yan CS_ETMV3_EXC_DATA_FAULT = 12, 7596dce7f4SLeo Yan CS_ETMV3_EXC_GENERIC = 13, 7696dce7f4SLeo Yan CS_ETMV3_EXC_IRQ = 14, 7796dce7f4SLeo Yan CS_ETMV3_EXC_FIQ = 15, 7896dce7f4SLeo Yan }; 7996dce7f4SLeo Yan 8096dce7f4SLeo Yan /* 8196dce7f4SLeo Yan * ETMv4 exception encoding number: 8296dce7f4SLeo Yan * See ARM Embedded Trace Macrocell Architecture Specification (ARM IHI 0064D) 8396dce7f4SLeo Yan * table 6-12 Possible values for the TYPE field in an Exception instruction 8496dce7f4SLeo Yan * trace packet, for ARMv7-A/R and ARMv8-A/R PEs. 8596dce7f4SLeo Yan */ 8696dce7f4SLeo Yan enum { 8796dce7f4SLeo Yan CS_ETMV4_EXC_RESET = 0, 8896dce7f4SLeo Yan CS_ETMV4_EXC_DEBUG_HALT = 1, 8996dce7f4SLeo Yan CS_ETMV4_EXC_CALL = 2, 9096dce7f4SLeo Yan CS_ETMV4_EXC_TRAP = 3, 9196dce7f4SLeo Yan CS_ETMV4_EXC_SYSTEM_ERROR = 4, 9296dce7f4SLeo Yan CS_ETMV4_EXC_INST_DEBUG = 6, 9396dce7f4SLeo Yan CS_ETMV4_EXC_DATA_DEBUG = 7, 9496dce7f4SLeo Yan CS_ETMV4_EXC_ALIGNMENT = 10, 9596dce7f4SLeo Yan CS_ETMV4_EXC_INST_FAULT = 11, 9696dce7f4SLeo Yan CS_ETMV4_EXC_DATA_FAULT = 12, 9796dce7f4SLeo Yan CS_ETMV4_EXC_IRQ = 14, 9896dce7f4SLeo Yan CS_ETMV4_EXC_FIQ = 15, 9996dce7f4SLeo Yan CS_ETMV4_EXC_END = 31, 10096dce7f4SLeo Yan }; 10196dce7f4SLeo Yan 1025f7cb035SMathieu Poirier enum cs_etm_sample_type { 1035f7cb035SMathieu Poirier CS_ETM_EMPTY, 1045f7cb035SMathieu Poirier CS_ETM_RANGE, 1055f7cb035SMathieu Poirier CS_ETM_DISCONTINUITY, 1065f7cb035SMathieu Poirier CS_ETM_EXCEPTION, 1075f7cb035SMathieu Poirier CS_ETM_EXCEPTION_RET, 1085f7cb035SMathieu Poirier }; 1095f7cb035SMathieu Poirier 1105f7cb035SMathieu Poirier enum cs_etm_isa { 1115f7cb035SMathieu Poirier CS_ETM_ISA_UNKNOWN, 1125f7cb035SMathieu Poirier CS_ETM_ISA_A64, 1135f7cb035SMathieu Poirier CS_ETM_ISA_A32, 1145f7cb035SMathieu Poirier CS_ETM_ISA_T32, 1155f7cb035SMathieu Poirier }; 1165f7cb035SMathieu Poirier 11795c6fe97SLeo Yan /* RB tree for quick conversion between traceID and metadata pointers */ 118cd8bfd8cSTor Jeremiassen struct intlist *traceid_list; 119cd8bfd8cSTor Jeremiassen 1205f7cb035SMathieu Poirier struct cs_etm_queue; 1215f7cb035SMathieu Poirier 1225f7cb035SMathieu Poirier struct cs_etm_packet { 1235f7cb035SMathieu Poirier enum cs_etm_sample_type sample_type; 1245f7cb035SMathieu Poirier enum cs_etm_isa isa; 1255f7cb035SMathieu Poirier u64 start_addr; 1265f7cb035SMathieu Poirier u64 end_addr; 1275f7cb035SMathieu Poirier u32 instr_count; 1285f7cb035SMathieu Poirier u32 last_instr_type; 1295f7cb035SMathieu Poirier u32 last_instr_subtype; 1305f7cb035SMathieu Poirier u32 flags; 1315f7cb035SMathieu Poirier u32 exception_number; 1325f7cb035SMathieu Poirier u8 last_instr_cond; 1335f7cb035SMathieu Poirier u8 last_instr_taken_branch; 1345f7cb035SMathieu Poirier u8 last_instr_size; 1355f7cb035SMathieu Poirier u8 trace_chan_id; 1365f7cb035SMathieu Poirier int cpu; 1375f7cb035SMathieu Poirier }; 1385f7cb035SMathieu Poirier 1395f7cb035SMathieu Poirier #define CS_ETM_PACKET_MAX_BUFFER 1024 1405f7cb035SMathieu Poirier 141c7bfa2fdSMathieu Poirier /* 142c7bfa2fdSMathieu Poirier * When working with per-thread scenarios the process under trace can 143c7bfa2fdSMathieu Poirier * be scheduled on any CPU and as such, more than one traceID may be 144c7bfa2fdSMathieu Poirier * associated with the same process. Since a traceID of '0' is illegal 145c7bfa2fdSMathieu Poirier * as per the CoreSight architecture, use that specific value to 146c7bfa2fdSMathieu Poirier * identify the queue where all packets (with any traceID) are 147c7bfa2fdSMathieu Poirier * aggregated. 148c7bfa2fdSMathieu Poirier */ 149c7bfa2fdSMathieu Poirier #define CS_ETM_PER_THREAD_TRACEID 0 150c7bfa2fdSMathieu Poirier 1515f7cb035SMathieu Poirier struct cs_etm_packet_queue { 1525f7cb035SMathieu Poirier u32 packet_count; 1535f7cb035SMathieu Poirier u32 head; 1545f7cb035SMathieu Poirier u32 tail; 155675f302fSMathieu Poirier u32 instr_count; 156675f302fSMathieu Poirier u64 timestamp; 157675f302fSMathieu Poirier u64 next_timestamp; 1585f7cb035SMathieu Poirier struct cs_etm_packet packet_buffer[CS_ETM_PACKET_MAX_BUFFER]; 1595f7cb035SMathieu Poirier }; 1605f7cb035SMathieu Poirier 161a818c563SMathieu Poirier #define KiB(x) ((x) * 1024) 162a818c563SMathieu Poirier #define MiB(x) ((x) * 1024 * 1024) 163a818c563SMathieu Poirier 1645f7cb035SMathieu Poirier #define CS_ETM_INVAL_ADDR 0xdeadbeefdeadbeefUL 1655f7cb035SMathieu Poirier 1663399ad9aSMathieu Poirier #define BMVAL(val, lsb, msb) ((val & GENMASK(msb, lsb)) >> lsb) 1673399ad9aSMathieu Poirier 168a818c563SMathieu Poirier #define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64)) 169a818c563SMathieu Poirier 1702507a3d9SMathieu Poirier #define __perf_cs_etmv3_magic 0x3030303030303030ULL 1712507a3d9SMathieu Poirier #define __perf_cs_etmv4_magic 0x4040404040404040ULL 172a818c563SMathieu Poirier #define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64)) 173a818c563SMathieu Poirier #define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64)) 174a818c563SMathieu Poirier 175440a23b3SMathieu Poirier #ifdef HAVE_CSTRACE_SUPPORT 176440a23b3SMathieu Poirier int cs_etm__process_auxtrace_info(union perf_event *event, 177440a23b3SMathieu Poirier struct perf_session *session); 17895c6fe97SLeo Yan int cs_etm__get_cpu(u8 trace_chan_id, int *cpu); 1790a6be300SMathieu Poirier int cs_etm__etmq_set_tid(struct cs_etm_queue *etmq, 1800a6be300SMathieu Poirier pid_t tid, u8 trace_chan_id); 181675f302fSMathieu Poirier bool cs_etm__etmq_is_timeless(struct cs_etm_queue *etmq); 182675f302fSMathieu Poirier void cs_etm__etmq_set_traceid_queue_timestamp(struct cs_etm_queue *etmq, 183675f302fSMathieu Poirier u8 trace_chan_id); 1845f7cb035SMathieu Poirier struct cs_etm_packet_queue 185c7bfa2fdSMathieu Poirier *cs_etm__etmq_get_packet_queue(struct cs_etm_queue *etmq, u8 trace_chan_id); 186440a23b3SMathieu Poirier #else 187440a23b3SMathieu Poirier static inline int 188440a23b3SMathieu Poirier cs_etm__process_auxtrace_info(union perf_event *event __maybe_unused, 189440a23b3SMathieu Poirier struct perf_session *session __maybe_unused) 190440a23b3SMathieu Poirier { 191440a23b3SMathieu Poirier return -1; 192440a23b3SMathieu Poirier } 19395c6fe97SLeo Yan 19495c6fe97SLeo Yan static inline int cs_etm__get_cpu(u8 trace_chan_id __maybe_unused, 19595c6fe97SLeo Yan int *cpu __maybe_unused) 19695c6fe97SLeo Yan { 19795c6fe97SLeo Yan return -1; 19895c6fe97SLeo Yan } 1995f7cb035SMathieu Poirier 2000a6be300SMathieu Poirier static inline int cs_etm__etmq_set_tid( 2010a6be300SMathieu Poirier struct cs_etm_queue *etmq __maybe_unused, 2020a6be300SMathieu Poirier pid_t tid __maybe_unused, 2030a6be300SMathieu Poirier u8 trace_chan_id __maybe_unused) 2040a6be300SMathieu Poirier { 2050a6be300SMathieu Poirier return -1; 2060a6be300SMathieu Poirier } 2070a6be300SMathieu Poirier 208675f302fSMathieu Poirier static inline bool cs_etm__etmq_is_timeless( 209675f302fSMathieu Poirier struct cs_etm_queue *etmq __maybe_unused) 210675f302fSMathieu Poirier { 211675f302fSMathieu Poirier /* What else to return? */ 212675f302fSMathieu Poirier return true; 213675f302fSMathieu Poirier } 214675f302fSMathieu Poirier 215675f302fSMathieu Poirier static inline void cs_etm__etmq_set_traceid_queue_timestamp( 216675f302fSMathieu Poirier struct cs_etm_queue *etmq __maybe_unused, 217675f302fSMathieu Poirier u8 trace_chan_id __maybe_unused) {} 218675f302fSMathieu Poirier 2195f7cb035SMathieu Poirier static inline struct cs_etm_packet_queue *cs_etm__etmq_get_packet_queue( 220c7bfa2fdSMathieu Poirier struct cs_etm_queue *etmq __maybe_unused, 221c7bfa2fdSMathieu Poirier u8 trace_chan_id __maybe_unused) 2225f7cb035SMathieu Poirier { 2235f7cb035SMathieu Poirier return NULL; 2245f7cb035SMathieu Poirier } 225440a23b3SMathieu Poirier #endif 226440a23b3SMathieu Poirier 227a818c563SMathieu Poirier #endif 228