1 /* $NetBSD: tprof_armv7.c,v 1.1 2018/07/15 23:50:53 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #include <sys/types.h> 31 32 #include <err.h> 33 #include <stdio.h> 34 #include <stdint.h> 35 #include <stdlib.h> 36 #include <string.h> 37 38 #include <dev/tprof/tprof_ioctl.h> 39 #include "../tprof.h" 40 41 struct pmu_event { 42 uint16_t event; 43 const char *name; 44 }; 45 46 struct pmu_event_table { 47 const char *name; 48 struct pmu_event *events; 49 u_int nevents; 50 struct pmu_event_table *next; 51 }; 52 53 /* 54 * Common event numbers, from ARM ARM. 55 */ 56 static struct pmu_event pmu_armv7_common_events[] = { 57 { 0x00, "SW_INCR" }, 58 { 0x01, "L1I_CACHE_REFILL" }, 59 { 0x02, "L1I_TLB_REFILL" }, 60 { 0x03, "L1D_CACHE_REFILL" }, 61 { 0x04, "L1D_CACHE" }, 62 { 0x05, "L1D_TLB_REFILL" }, 63 { 0x06, "LD_RETIRED" }, 64 { 0x07, "ST_RETIRED" }, 65 { 0x08, "INST_RETIRED" }, 66 { 0x09, "EXC_TAKEN" }, 67 { 0x0a, "EXC_RETURN" }, 68 { 0x0b, "CID_WRITE_RETIRED" }, 69 { 0x0c, "PC_WRITE_RETIRED" }, 70 { 0x0d, "BR_IMMED_RETIRED" }, 71 { 0x0e, "BR_RETURN_RETIRED" }, 72 { 0x0f, "UNALIGNED_LDST_RETIRED" }, 73 { 0x10, "BR_MIS_PRED" }, 74 { 0x11, "CPU_CYCLES" }, 75 { 0x12, "BR_PRED" }, 76 { 0x13, "MEM_ACCESS" }, 77 { 0x14, "L1I_CACHE" }, 78 { 0x15, "L1D_CACHE_WB" }, 79 { 0x16, "L2D_CACHE" }, 80 { 0x17, "L2D_CACHE_REFILL" }, 81 { 0x18, "L2D_CACHE_WB" }, 82 { 0x19, "BUS_ACCESS" }, 83 { 0x1a, "MEMORY_ERROR" }, 84 { 0x1b, "INST_SPEC" }, 85 { 0x1c, "TTBR_WRITE_RETIRED" }, 86 { 0x1d, "BUS_CYCLES" }, 87 }; 88 89 static struct pmu_event_table pmu_armv7 = { 90 .name = "ARMv7 common architectural and microarchitectural events", 91 .events = pmu_armv7_common_events, 92 .nevents = __arraycount(pmu_armv7_common_events), 93 .next = NULL 94 }; 95 96 static struct pmu_event_table *events = NULL; 97 98 int 99 tprof_event_init(uint32_t ident) 100 { 101 if (ident != TPROF_IDENT_ARMV7_GENERIC) 102 return -1; 103 104 events = &pmu_armv7; 105 106 return 0; 107 } 108 109 static void 110 tprof_event_list_table(struct pmu_event_table *tbl) 111 { 112 u_int n; 113 114 printf("%s:\n", tbl->name); 115 for (n = 0; n < tbl->nevents; n++) { 116 printf("\t%s\n", tbl->events[n].name); 117 } 118 119 if (tbl->next) 120 tprof_event_list_table(tbl->next); 121 } 122 123 void 124 tprof_event_list(void) 125 { 126 tprof_event_list_table(events); 127 } 128 129 static void 130 tprof_event_lookup_table(const char *name, struct tprof_param *param, 131 struct pmu_event_table *tbl) 132 { 133 u_int n; 134 135 for (n = 0; n < tbl->nevents; n++) { 136 if (strcmp(tbl->events[n].name, name) == 0) { 137 param->p_event = tbl->events[n].event; 138 param->p_unit = 0; 139 return; 140 } 141 } 142 143 if (tbl->next) 144 tprof_event_lookup_table(name, param, tbl->next); 145 else 146 errx(EXIT_FAILURE, "event '%s' unknown", name); 147 } 148 149 void 150 tprof_event_lookup(const char *name, struct tprof_param *param) 151 { 152 tprof_event_lookup_table(name, param, events); 153 } 154