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 | |