/* $NetBSD: tprof_armv8.c,v 1.1 2018/07/15 16:25:31 jmcneill Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <
[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <err.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <dev/tprof/tprof_ioctl.h>
#include "../tprof.h"
struct pmu_event {
uint16_t event;
const char *name;
};
struct pmu_event_table {
const char *name;
struct pmu_event *events;
u_int nevents;
struct pmu_event_table *next;
};
/*
* Common event numbers, from ARMv8 ARM.
*/
static struct pmu_event pmu_armv8_common_events[] = {
{ 0x0000, "SW_INCR" },
{ 0x0001, "L1I_CACHE_REFILL" },
{ 0x0002, "L1I_TLB_REFILL" },
{ 0x0003, "L1D_CACHE_REFILL" },
{ 0x0004, "L1D_CACHE" },
{ 0x0005, "L1D_TLB_REFILL" },
{ 0x0006, "LD_RETIRED" },
{ 0x0007, "ST_RETIRED" },
{ 0x0008, "INST_RETIRED" },
{ 0x0009, "EXC_TAKEN" },
{ 0x000a, "EXC_RETURN" },
{ 0x000b, "CID_WRITE_RETIRED" },
{ 0x000c, "PC_WRITE_RETIRED" },
{ 0x000d, "BR_IMMED_RETIRED" },
{ 0x000e, "BR_RETURN_RETIRED" },
{ 0x000f, "UNALIGNED_LDST_RETIRED" },
{ 0x0010, "BR_MIS_PRED" },
{ 0x0011, "CPU_CYCLES" },
{ 0x0012, "BR_PRED" },
{ 0x0013, "MEM_ACCESS" },
{ 0x0014, "L1I_CACHE" },
{ 0x0015, "L1D_CACHE_WB" },
{ 0x0016, "L2D_CACHE" },
{ 0x0017, "L2D_CACHE_REFILL" },
{ 0x0018, "L2D_CACHE_WB" },
{ 0x0019, "BUS_ACCESS" },
{ 0x001a, "MEMORY_ERROR" },
{ 0x001b, "INST_SPEC" },
{ 0x001c, "TTBR_WRITE_RETIRED" },
{ 0x001d, "BUS_CYCLES" },
{ 0x001e, "CHAIN" },
{ 0x001f, "L1D_CACHE_ALLOCATE" },
{ 0x0020, "L2D_CACHE_ALLOCATE" },
{ 0x0021, "BR_RETIRED" },
{ 0x0022, "BR_MIS_PRED_RETIRED" },
{ 0x0023, "STALL_FRONTEND" },
{ 0x0024, "STALL_BACKEND" },
{ 0x0025, "L1D_TLB" },
{ 0x0026, "L1I_TLB" },
{ 0x0027, "L2I_CACHE" },
{ 0x0028, "L2I_CACHE_REFILL" },
{ 0x0029, "L3D_CACHE_ALLOCATE" },
{ 0x002a, "L3D_CACHE_REFILL" },
{ 0x002b, "L3D_CACHE" },
{ 0x002c, "L3D_CACHE_WB" },
{ 0x002d, "L2D_TLB_REFILL" },
{ 0x002e, "L2I_TLB_REFILL" },
{ 0x002f, "L2D_TLB" },
{ 0x0030, "L2I_TLB" },
{ 0x0031, "REMOTE_ACCESS" },
{ 0x0032, "LL_CACHE" },
{ 0x0033, "LL_CACHE_MISS" },
{ 0x0034, "DTLB_WALK" },
{ 0x0035, "ITLB_WALK" },
{ 0x0036, "LL_CACHE_RD" },
{ 0x0037, "LL_CACHE_MISS_RD" },
{ 0x0038, "REMOTE_ACCESS_RD" },
};
static struct pmu_event_table pmu_armv8 = {
.name = "ARMv8 common architectural and microarchitectural events",
.events = pmu_armv8_common_events,
.nevents = __arraycount(pmu_armv8_common_events),
.next = NULL
};
static struct pmu_event_table *events = NULL;
int
tprof_event_init(uint32_t ident)
{
if (ident != TPROF_IDENT_ARMV8_GENERIC)
return -1;
events = &pmu_armv8;
return 0;
}
static void
tprof_event_list_table(struct pmu_event_table *tbl)
{
u_int n;
printf("%s:\n", tbl->name);
for (n = 0; n < tbl->nevents; n++) {
printf("\t%s\n", tbl->events[n].name);
}
if (tbl->next)
tprof_event_list_table(tbl->next);
}
void
tprof_event_list(void)
{
tprof_event_list_table(events);
}
static void
tprof_event_lookup_table(const char *name, struct tprof_param *param,
struct pmu_event_table *tbl)
{
u_int n;
for (n = 0; n < tbl->nevents; n++) {
if (strcmp(tbl->events[n].name, name) == 0) {
param->p_event = tbl->events[n].event;
param->p_unit = 0;
return;
}
}
if (tbl->next)
tprof_event_lookup_table(name, param, tbl->next);
else
errx(EXIT_FAILURE, "event '%s' unknown", name);
}
void
tprof_event_lookup(const char *name, struct tprof_param *param)
{
tprof_event_lookup_table(name, param, events);
}
