esp-idf/components/perfmon/xtensa_perfmon_access.c

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// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "xtensa_perfmon_access.h"
#include "xtensa-debug-module.h"
#include "eri.h"
esp_err_t xtensa_perfmon_init(int id, uint16_t select, uint16_t mask, int kernelcnt, int tracelevel)
{
if (id >= ERI_PERFMON_MAX) {
return ESP_ERR_INVALID_ARG;
}
uint32_t pmc =
((tracelevel & PMCTRL_TRACELEVEL_MASK) << PMCTRL_TRACELEVEL_SHIFT) |
((select & PMCTRL_SELECT_MASK) << PMCTRL_SELECT_SHIFT) |
((mask & PMCTRL_MASK_MASK) << PMCTRL_MASK_SHIFT) |
((kernelcnt & 1) << PMCTRL_KRNLCNT_SHIFT);
eri_write(ERI_PERFMON_PM0 + id * sizeof(int32_t), 0);
eri_write(ERI_PERFMON_PMCTRL0 + id * sizeof(int32_t), pmc);
return ESP_OK;
}
void xtensa_perfmon_dump(void)
{
uint32_t pgm = eri_read(ERI_PERFMON_PGM);
uint32_t intpc = eri_read(ERI_PERFMON_INTPC);
printf("perfmon: PGM=%08x, INTPC=%08x\n", pgm, intpc);
for (int i = 0 ; i < ERI_PERFMON_MAX ; i++) {
uint32_t pm = eri_read(ERI_PERFMON_PM0 + i * sizeof(int32_t));
uint32_t pmctrl = eri_read(ERI_PERFMON_PMCTRL0 + i * sizeof(int32_t));
uint32_t pmstat = eri_read(ERI_PERFMON_PMSTAT0 + i * sizeof(int32_t));
printf("perfmon: pm%i=%08x, pmctrl%i=%08x, pmstat%i=%08x\n", i, pm, i, pmctrl, i, pmstat);
}
}
esp_err_t xtensa_perfmon_reset(int id)
{
if (id >= ERI_PERFMON_MAX) {
return ESP_ERR_INVALID_ARG;
}
eri_write(ERI_PERFMON_PM0 + id * sizeof(int32_t), 0);
return ESP_OK;
}
void xtensa_perfmon_start(void)
{
eri_write(ERI_PERFMON_PGM, PGM_PMEN);
}
void xtensa_perfmon_stop(void)
{
eri_write(ERI_PERFMON_PGM, 0);
}
uint32_t xtensa_perfmon_value(int id)
{
if (id >= ERI_PERFMON_MAX) {
return 0;
}
uint32_t result = eri_read(ERI_PERFMON_PM0 + id * sizeof(int32_t));
return result;
}
esp_err_t xtensa_perfmon_overflow(int id)
{
if (id >= ERI_PERFMON_MAX) {
return ESP_ERR_INVALID_ARG;
}
uint32_t result = eri_read(ERI_PERFMON_PMSTAT0 + id * sizeof(int32_t));
if (result & 1) {
return ESP_FAIL;
}
return ESP_OK;
}