1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright(C) 2015 Linaro Limited. All rights reserved. 4 * Author: Mathieu Poirier <mathieu.poirier@linaro.org> 5 */ 6 7 #ifndef INCLUDE__UTIL_PERF_CS_ETM_H__ 8 #define INCLUDE__UTIL_PERF_CS_ETM_H__ 9 10 #include "util/event.h" 11 #include "util/session.h" 12 13 /* Versionning header in case things need tro change in the future. That way 14 * decoding of old snapshot is still possible. 15 */ 16 enum { 17 /* Starting with 0x0 */ 18 CS_HEADER_VERSION_0, 19 /* PMU->type (32 bit), total # of CPUs (32 bit) */ 20 CS_PMU_TYPE_CPUS, 21 CS_ETM_SNAPSHOT, 22 CS_HEADER_VERSION_0_MAX, 23 }; 24 25 /* Beginning of header common to both ETMv3 and V4 */ 26 enum { 27 CS_ETM_MAGIC, 28 CS_ETM_CPU, 29 }; 30 31 /* ETMv3/PTM metadata */ 32 enum { 33 /* Dynamic, configurable parameters */ 34 CS_ETM_ETMCR = CS_ETM_CPU + 1, 35 CS_ETM_ETMTRACEIDR, 36 /* RO, taken from sysFS */ 37 CS_ETM_ETMCCER, 38 CS_ETM_ETMIDR, 39 CS_ETM_PRIV_MAX, 40 }; 41 42 /* ETMv4 metadata */ 43 enum { 44 /* Dynamic, configurable parameters */ 45 CS_ETMV4_TRCCONFIGR = CS_ETM_CPU + 1, 46 CS_ETMV4_TRCTRACEIDR, 47 /* RO, taken from sysFS */ 48 CS_ETMV4_TRCIDR0, 49 CS_ETMV4_TRCIDR1, 50 CS_ETMV4_TRCIDR2, 51 CS_ETMV4_TRCIDR8, 52 CS_ETMV4_TRCAUTHSTATUS, 53 CS_ETMV4_PRIV_MAX, 54 }; 55 56 /* RB tree for quick conversion between traceID and CPUs */ 57 struct intlist *traceid_list; 58 59 #define KiB(x) ((x) * 1024) 60 #define MiB(x) ((x) * 1024 * 1024) 61 62 #define CS_ETM_HEADER_SIZE (CS_HEADER_VERSION_0_MAX * sizeof(u64)) 63 64 static const u64 __perf_cs_etmv3_magic = 0x3030303030303030ULL; 65 static const u64 __perf_cs_etmv4_magic = 0x4040404040404040ULL; 66 #define CS_ETMV3_PRIV_SIZE (CS_ETM_PRIV_MAX * sizeof(u64)) 67 #define CS_ETMV4_PRIV_SIZE (CS_ETMV4_PRIV_MAX * sizeof(u64)) 68 69 #ifdef HAVE_CSTRACE_SUPPORT 70 int cs_etm__process_auxtrace_info(union perf_event *event, 71 struct perf_session *session); 72 #else 73 static inline int 74 cs_etm__process_auxtrace_info(union perf_event *event __maybe_unused, 75 struct perf_session *session __maybe_unused) 76 { 77 return -1; 78 } 79 #endif 80 81 #endif 82