1 /* $NetBSD: tprof_armv8.c,v 1.1 2018/07/15 16:25:31 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 ARMv8 ARM.
55 */
56 static struct pmu_event pmu_armv8_common_events[] = {
57 { 0x0000, "SW_INCR" },
58 { 0x0001, "L1I_CACHE_REFILL" },
59 { 0x0002, "L1I_TLB_REFILL" },
60 { 0x0003, "L1D_CACHE_REFILL" },
61 { 0x0004, "L1D_CACHE" },
62 { 0x0005, "L1D_TLB_REFILL" },
63 { 0x0006, "LD_RETIRED" },
64 { 0x0007, "ST_RETIRED" },
65 { 0x0008, "INST_RETIRED" },
66 { 0x0009, "EXC_TAKEN" },
67 { 0x000a, "EXC_RETURN" },
68 { 0x000b, "CID_WRITE_RETIRED" },
69 { 0x000c, "PC_WRITE_RETIRED" },
70 { 0x000d, "BR_IMMED_RETIRED" },
71 { 0x000e, "BR_RETURN_RETIRED" },
72 { 0x000f, "UNALIGNED_LDST_RETIRED" },
73 { 0x0010, "BR_MIS_PRED" },
74 { 0x0011, "CPU_CYCLES" },
75 { 0x0012, "BR_PRED" },
76 { 0x0013, "MEM_ACCESS" },
77 { 0x0014, "L1I_CACHE" },
78 { 0x0015, "L1D_CACHE_WB" },
79 { 0x0016, "L2D_CACHE" },
80 { 0x0017, "L2D_CACHE_REFILL" },
81 { 0x0018, "L2D_CACHE_WB" },
82 { 0x0019, "BUS_ACCESS" },
83 { 0x001a, "MEMORY_ERROR" },
84 { 0x001b, "INST_SPEC" },
85 { 0x001c, "TTBR_WRITE_RETIRED" },
86 { 0x001d, "BUS_CYCLES" },
87 { 0x001e, "CHAIN" },
88 { 0x001f, "L1D_CACHE_ALLOCATE" },
89 { 0x0020, "L2D_CACHE_ALLOCATE" },
90 { 0x0021, "BR_RETIRED" },
91 { 0x0022, "BR_MIS_PRED_RETIRED" },
92 { 0x0023, "STALL_FRONTEND" },
93 { 0x0024, "STALL_BACKEND" },
94 { 0x0025, "L1D_TLB" },
95 { 0x0026, "L1I_TLB" },
96 { 0x0027, "L2I_CACHE" },
97 { 0x0028, "L2I_CACHE_REFILL" },
98 { 0x0029, "L3D_CACHE_ALLOCATE" },
99 { 0x002a, "L3D_CACHE_REFILL" },
100 { 0x002b, "L3D_CACHE" },
101 { 0x002c, "L3D_CACHE_WB" },
102 { 0x002d, "L2D_TLB_REFILL" },
103 { 0x002e, "L2I_TLB_REFILL" },
104 { 0x002f, "L2D_TLB" },
105 { 0x0030, "L2I_TLB" },
106 { 0x0031, "REMOTE_ACCESS" },
107 { 0x0032, "LL_CACHE" },
108 { 0x0033, "LL_CACHE_MISS" },
109 { 0x0034, "DTLB_WALK" },
110 { 0x0035, "ITLB_WALK" },
111 { 0x0036, "LL_CACHE_RD" },
112 { 0x0037, "LL_CACHE_MISS_RD" },
113 { 0x0038, "REMOTE_ACCESS_RD" },
114 };
115
116 static struct pmu_event_table pmu_armv8 = {
117 .name = "ARMv8 common architectural and microarchitectural events",
118 .events = pmu_armv8_common_events,
119 .nevents = __arraycount(pmu_armv8_common_events),
120 .next = NULL
121 };
122
123 static struct pmu_event_table *events = NULL;
124
125 int
tprof_event_init(uint32_t ident)126 tprof_event_init(uint32_t ident)
127 {
128 if (ident != TPROF_IDENT_ARMV8_GENERIC)
129 return -1;
130
131 events = &pmu_armv8;
132
133 return 0;
134 }
135
136 static void
tprof_event_list_table(struct pmu_event_table * tbl)137 tprof_event_list_table(struct pmu_event_table *tbl)
138 {
139 u_int n;
140
141 printf("%s:\n", tbl->name);
142 for (n = 0; n < tbl->nevents; n++) {
143 printf("\t%s\n", tbl->events[n].name);
144 }
145
146 if (tbl->next)
147 tprof_event_list_table(tbl->next);
148 }
149
150 void
tprof_event_list(void)151 tprof_event_list(void)
152 {
153 tprof_event_list_table(events);
154 }
155
156 static void
tprof_event_lookup_table(const char * name,struct tprof_param * param,struct pmu_event_table * tbl)157 tprof_event_lookup_table(const char *name, struct tprof_param *param,
158 struct pmu_event_table *tbl)
159 {
160 u_int n;
161
162 for (n = 0; n < tbl->nevents; n++) {
163 if (strcmp(tbl->events[n].name, name) == 0) {
164 param->p_event = tbl->events[n].event;
165 param->p_unit = 0;
166 return;
167 }
168 }
169
170 if (tbl->next)
171 tprof_event_lookup_table(name, param, tbl->next);
172 else
173 errx(EXIT_FAILURE, "event '%s' unknown", name);
174 }
175
176 void
tprof_event_lookup(const char * name,struct tprof_param * param)177 tprof_event_lookup(const char *name, struct tprof_param *param)
178 {
179 tprof_event_lookup_table(name, param, events);
180 }
181