1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * PAPR Energy attributes sniff test
4 * This checks if the papr folders and contents are populated relating to
5 * the energy and frequency attributes
6 *
7 * Copyright 2022, Pratik Rajesh Sampat, IBM Corp.
8 */
9
10 #include <errno.h>
11 #include <stdio.h>
12 #include <string.h>
13 #include <dirent.h>
14 #include <sys/types.h>
15 #include <sys/stat.h>
16 #include <unistd.h>
17 #include <stdlib.h>
18
19 #include "utils.h"
20
21 enum energy_freq_attrs {
22 POWER_PERFORMANCE_MODE = 1,
23 IDLE_POWER_SAVER_STATUS = 2,
24 MIN_FREQ = 3,
25 STAT_FREQ = 4,
26 MAX_FREQ = 6,
27 PROC_FOLDING_STATUS = 8
28 };
29
30 enum type {
31 INVALID,
32 STR_VAL,
33 NUM_VAL
34 };
35
36 static int value_type(int id)
37 {
38 int val_type;
39
40 switch (id) {
41 case POWER_PERFORMANCE_MODE:
42 case IDLE_POWER_SAVER_STATUS:
43 val_type = STR_VAL;
44 break;
45 case MIN_FREQ:
46 case STAT_FREQ:
47 case MAX_FREQ:
48 case PROC_FOLDING_STATUS:
49 val_type = NUM_VAL;
50 break;
51 default:
52 val_type = INVALID;
53 }
54
55 return val_type;
56 }
57
58 static int verify_energy_info(void)
59 {
60 const char *path = "/sys/firmware/papr/energy_scale_info";
61 struct dirent *entry;
62 struct stat s;
63 DIR *dirp;
64
65 errno = 0;
66 if (stat(path, &s)) {
67 SKIP_IF(errno == ENOENT);
68 FAIL_IF(errno);
69 }
70
71 FAIL_IF(!S_ISDIR(s.st_mode));
72
73 dirp = opendir(path);
74
75 while ((entry = readdir(dirp)) != NULL) {
76 char file_name[64];
77 int id, attr_type;
78 FILE *f;
79
80 if (strcmp(entry->d_name, ".") == 0 ||
81 strcmp(entry->d_name, "..") == 0)
82 continue;
83
84 id = atoi(entry->d_name);
85 attr_type = value_type(id);
86 FAIL_IF(attr_type == INVALID);
87
88 /* Check if the files exist and have data in them */
89 sprintf(file_name, "%s/%d/desc", path, id);
90 f = fopen(file_name, "r");
91 FAIL_IF(!f);
92 FAIL_IF(fgetc(f) == EOF);
93
94 sprintf(file_name, "%s/%d/value", path, id);
95 f = fopen(file_name, "r");
96 FAIL_IF(!f);
97 FAIL_IF(fgetc(f) == EOF);
98
99 if (attr_type == STR_VAL) {
100 sprintf(file_name, "%s/%d/value_desc", path, id);
101 f = fopen(file_name, "r");
102 FAIL_IF(!f);
103 FAIL_IF(fgetc(f) == EOF);
104 }
105 }
106
107 return 0;
108 }
109
110 int main(void)
111 {
112 return test_harness(verify_energy_info, "papr_attributes");
113 }
114
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