esp-idf/components/perfmon/xtensa_perfmon_apis.c

89 lines
3.4 KiB
C

// 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 <stdlib.h>
#include "xtensa_perfmon_apis.h"
#include "xtensa_perfmon_masks.h"
static const char *TAG = "perfmon";
esp_err_t xtensa_perfmon_exec(const xtensa_perfmon_config_t *config)
{
esp_err_t result = ESP_OK;
if (config->call_function == NULL) {
ESP_LOGE(TAG, "Parameter call_function must be defined.");
return ESP_ERR_INVALID_ARG;
}
if (config->callback == NULL) {
ESP_LOGE(TAG, "Parameter callback must be defined.");
return ESP_ERR_INVALID_ARG;
}
for (size_t n = 0; n < config->counters_size; n++) {
uint32_t call_min = UINT32_MAX;
uint32_t call_max = 0;
float result_value = 0;
for (size_t i = 0; i < config->repeat_count; i++) {
// Set up cycle counter
xtensa_perfmon_stop();
int kernelcnt = 0;
// if tracelevel used, then kernelcnt will be enabled
if (config->tracelevel >=0) kernelcnt = 1;
xtensa_perfmon_init(0, 0, 0xffff, kernelcnt, config->tracelevel);
xtensa_perfmon_init(1, config->select_mask[n * 2 + 0], config->select_mask[n * 2 + 1], kernelcnt, config->tracelevel);
xtensa_perfmon_start();
config->call_function(config->call_params);
xtensa_perfmon_stop();
uint32_t p0 = xtensa_perfmon_value(0);
uint32_t p1 = xtensa_perfmon_value(1);
result_value += (float)p1 / config->repeat_count;
if (p0 < call_min) {
call_min = p0;
}
if (p0 > call_max) {
call_max = p0;
}
ESP_LOGV(TAG, "p0 = %i, p1 = %i", p0, p1);
}
uint32_t call_diff = (call_max - call_min);
if (call_diff > call_max * config->max_deviation) {
return ESP_FAIL;
} else {
config->callback(config->callback_params, config->select_mask[n * 2 + 0], config->select_mask[n * 2 + 1], (uint32_t)result_value);
}
}
return result;
}
void xtensa_perfmon_view_cb(void *params, uint32_t select, uint32_t mask, uint32_t value)
{
FILE *handle;
if (params != NULL) {
handle = (FILE *)params;
} else {
handle = stdout;
}
for (int i = 0 ; xtensa_perfmon_select_table[i].select != -1; i++) {
if (xtensa_perfmon_select_table[i].select == select) {
fprintf(handle, "Value = %9i, select = %2i, mask = %04x. %s.\n", value, select, mask, xtensa_perfmon_select_table[i].description);
}
}
for (int i = 0 ; xtensa_perfmon_masks_table[i].select != -1; i++) {
if ((xtensa_perfmon_masks_table[i].select == select) && (xtensa_perfmon_masks_table[i].mask & mask)) {
fprintf(handle, " %s\n", xtensa_perfmon_masks_table[i].description);
}
}
}