1 /*
2 * Copyright © 2017 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23 #include "config.h"
24 #include "igt.h"
25 #include "igt_sysfs.h"
26 #include <fcntl.h>
27 #include <sys/types.h>
28 #include <dirent.h>
29
read_and_discard_sysfs_entries(int path_fd,int indent)30 static void read_and_discard_sysfs_entries(int path_fd, int indent)
31 {
32 struct dirent *dirent;
33 DIR *dir;
34 char tabs[8];
35 int i;
36
37 igt_assert(indent < sizeof(tabs) - 1);
38
39 for (i = 0; i < indent; i++)
40 tabs[i] = '\t';
41 tabs[i] = '\0';
42
43 dir = fdopendir(path_fd);
44 if (!dir)
45 return;
46
47 while ((dirent = readdir(dir))) {
48 if (!strcmp(dirent->d_name, ".") ||
49 !strcmp(dirent->d_name, ".."))
50 continue;
51 if (dirent->d_type == DT_DIR) {
52 int sub_fd = -1;
53 igt_assert((sub_fd =
54 openat(path_fd, dirent->d_name, O_RDONLY |
55 O_DIRECTORY)) > 0);
56 igt_debug("%sEntering subdir %s\n", tabs, dirent->d_name);
57 read_and_discard_sysfs_entries(sub_fd, indent + 1);
58 close(sub_fd);
59 } else {
60 char buf[512];
61 int sub_fd;
62 ssize_t ret;
63
64 igt_kmsg(KMSG_DEBUG "Reading file \"%s\"\n", dirent->d_name);
65 igt_debug("%sReading file \"%s\"\n", tabs, dirent->d_name);
66 igt_set_timeout(5, "reading sysfs entry");
67
68 sub_fd = openat(path_fd, dirent->d_name, O_RDONLY);
69 if (sub_fd == -1) {
70 igt_debug("%sCould not open file \"%s\" with error: %m\n",
71 tabs, dirent->d_name);
72 continue;
73 }
74
75 do {
76 ret = read(sub_fd, buf, sizeof(buf));
77 } while (ret == sizeof(buf));
78
79 if (ret == -1)
80 igt_debug("%sCould not read file \"%s\" with error: %m\n",
81 tabs, dirent->d_name);
82
83 igt_reset_timeout();
84 close(sub_fd);
85 }
86 }
87 closedir(dir);
88 }
89
kms_tests(int fd,int debugfs)90 static void kms_tests(int fd, int debugfs)
91 {
92 igt_display_t display;
93 struct igt_fb fb[IGT_MAX_PIPES];
94 enum pipe pipe;
95
96 igt_fixture
97 igt_display_require(&display, fd);
98
99 igt_subtest("read_all_entries_display_on") {
100 /* try to light all pipes */
101 for_each_pipe(&display, pipe) {
102 igt_output_t *output;
103
104 for_each_valid_output_on_pipe(&display, pipe, output) {
105 igt_plane_t *primary;
106 drmModeModeInfo *mode;
107
108 if (output->pending_pipe != PIPE_NONE)
109 continue;
110
111 igt_output_set_pipe(output, pipe);
112 primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
113 mode = igt_output_get_mode(output);
114 igt_create_pattern_fb(display.drm_fd,
115 mode->hdisplay, mode->vdisplay,
116 DRM_FORMAT_XRGB8888,
117 LOCAL_DRM_FORMAT_MOD_NONE, &fb[pipe]);
118
119 /* Set a valid fb as some debugfs like to inspect it on a active pipe */
120 igt_plane_set_fb(primary, &fb[pipe]);
121 break;
122 }
123 }
124
125 igt_display_commit2(&display, display.is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
126
127 read_and_discard_sysfs_entries(debugfs, 0);
128 }
129
130 igt_subtest("read_all_entries_display_off") {
131 igt_output_t *output;
132 igt_plane_t *plane;
133
134 for_each_connected_output(&display, output)
135 igt_output_set_pipe(output, PIPE_NONE);
136
137 for_each_pipe(&display, pipe)
138 for_each_plane_on_pipe(&display, pipe, plane)
139 igt_plane_set_fb(plane, NULL);
140
141 igt_display_commit2(&display, display.is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
142
143 read_and_discard_sysfs_entries(debugfs, 0);
144 }
145
146 igt_fixture
147 igt_display_fini(&display);
148 }
149
150 igt_main
151 {
152 int fd = -1, debugfs;
153
154 igt_skip_on_simulation();
155
156 igt_fixture {
157 fd = drm_open_driver_master(DRIVER_INTEL);
158 igt_require_gem(fd);
159 debugfs = igt_debugfs_dir(fd);
160
161 kmstest_set_vt_graphics_mode();
162 }
163
164 igt_subtest("read_all_entries")
165 read_and_discard_sysfs_entries(debugfs, 0);
166
167 igt_subtest_group
168 kms_tests(fd, debugfs);
169
170 igt_fixture {
171 close(debugfs);
172 close(fd);
173 }
174 }
175