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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PAPR Energy attributes sniff test
* This checks if the papr folders and contents are populated relating to
* the energy and frequency attributes
*
* Copyright 2022, Pratik Rajesh Sampat, IBM Corp.
*/
#include <stdio.h>
#include <string.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include "utils.h"
enum energy_freq_attrs {
POWER_PERFORMANCE_MODE = 1,
IDLE_POWER_SAVER_STATUS = 2,
MIN_FREQ = 3,
STAT_FREQ = 4,
MAX_FREQ = 6,
PROC_FOLDING_STATUS = 8
};
enum type {
INVALID,
STR_VAL,
NUM_VAL
};
int value_type(int id)
{
int val_type;
switch (id) {
case POWER_PERFORMANCE_MODE:
case IDLE_POWER_SAVER_STATUS:
val_type = STR_VAL;
break;
case MIN_FREQ:
case STAT_FREQ:
case MAX_FREQ:
case PROC_FOLDING_STATUS:
val_type = NUM_VAL;
break;
default:
val_type = INVALID;
}
return val_type;
}
int verify_energy_info(void)
{
const char *path = "/sys/firmware/papr/energy_scale_info";
struct dirent *entry;
struct stat s;
DIR *dirp;
if (stat(path, &s) || !S_ISDIR(s.st_mode))
return -1;
dirp = opendir(path);
while ((entry = readdir(dirp)) != NULL) {
char file_name[64];
int id, attr_type;
FILE *f;
if (strcmp(entry->d_name, ".") == 0 ||
strcmp(entry->d_name, "..") == 0)
continue;
id = atoi(entry->d_name);
attr_type = value_type(id);
if (attr_type == INVALID)
return -1;
/* Check if the files exist and have data in them */
sprintf(file_name, "%s/%d/desc", path, id);
f = fopen(file_name, "r");
if (!f || fgetc(f) == EOF)
return -1;
sprintf(file_name, "%s/%d/value", path, id);
f = fopen(file_name, "r");
if (!f || fgetc(f) == EOF)
return -1;
if (attr_type == STR_VAL) {
sprintf(file_name, "%s/%d/value_desc", path, id);
f = fopen(file_name, "r");
if (!f || fgetc(f) == EOF)
return -1;
}
}
return 0;
}
int main(void)
{
return test_harness(verify_energy_info, "papr_attributes");
}
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