1 /*
2 * Copyright © 2016 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 */
24
25 #include "igt.h"
26 #include <stdbool.h>
27
28 IGT_TEST_DESCRIPTION("Make sure all modesets are rejected when the requested dotclock is too high");
29
30 typedef struct {
31 int drm_fd;
32 igt_display_t display;
33 igt_output_t *output;
34 drmModeResPtr res;
35 int max_dotclock;
36 } data_t;
37
has_scaling_mode_prop(data_t * data)38 static bool has_scaling_mode_prop(data_t *data)
39 {
40 return kmstest_get_property(data->drm_fd,
41 data->output->id,
42 DRM_MODE_OBJECT_CONNECTOR,
43 "scaling mode",
44 NULL, NULL, NULL);
45 }
46
47 static int
test_output(data_t * data)48 test_output(data_t *data)
49 {
50 igt_output_t *output = data->output;
51 drmModeModeInfo mode;
52 struct igt_fb fb;
53 int i;
54
55 /*
56 * FIXME When we have a fixed mode, the kernel will ignore
57 * the user timings apart from hdisplay/vdisplay. Should
58 * fix the kernel to at least make sure the requested
59 * refresh rate as specified by the user timings will
60 * roughly match the user will get. For now skip the
61 * test on any connector with a fixed mode.
62 */
63 if (has_scaling_mode_prop(data))
64 return 0;
65
66 /*
67 * FIXME test every mode we have to be more
68 * sure everything is really getting rejected?
69 */
70 mode = *igt_output_get_mode(output);
71 mode.clock = data->max_dotclock + 1;
72
73 igt_create_fb(data->drm_fd,
74 mode.hdisplay, mode.vdisplay,
75 DRM_FORMAT_XRGB8888,
76 LOCAL_DRM_FORMAT_MOD_NONE,
77 &fb);
78
79 for (i = 0; i < data->res->count_crtcs; i++) {
80 int ret;
81
82 igt_info("Checking pipe %c connector %s with mode %s\n",
83 'A'+i, output->name, mode.name);
84
85 ret = drmModeSetCrtc(data->drm_fd, data->res->crtcs[i],
86 fb.fb_id, 0, 0,
87 &output->id, 1, &mode);
88 igt_assert_lt(ret, 0);
89 }
90
91 igt_remove_fb(data->drm_fd, &fb);
92
93 return 1;
94 }
95
test(data_t * data)96 static void test(data_t *data)
97 {
98 int valid_connectors = 0;
99
100 for_each_connected_output(&data->display, data->output) {
101 valid_connectors += test_output(data);
102 }
103
104 igt_require_f(valid_connectors, "No suitable connectors found\n");
105 }
106
i915_max_dotclock(data_t * data)107 static int i915_max_dotclock(data_t *data)
108 {
109 char buf[4096];
110 char *s;
111 int max_dotclock = 0;
112
113 igt_debugfs_read(data->drm_fd, "i915_frequency_info", buf);
114 s = strstr(buf, "Max pixel clock frequency:");
115 igt_assert(s);
116 igt_assert_eq(sscanf(s, "Max pixel clock frequency: %d kHz", &max_dotclock), 1);
117
118 /* 100 Mhz to 5 GHz seem like reasonable values to expect */
119 igt_assert_lt(max_dotclock, 5000000);
120 igt_assert_lt(100000, max_dotclock);
121
122 return max_dotclock;
123 }
124
125 static data_t data;
126
127 igt_simple_main
128 {
129 igt_skip_on_simulation();
130
131 data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
132 igt_require_intel(data.drm_fd);
133
134 kmstest_set_vt_graphics_mode();
135
136 igt_display_require(&data.display, data.drm_fd);
137 data.res = drmModeGetResources(data.drm_fd);
138 igt_assert(data.res);
139
140 kmstest_unset_all_crtcs(data.drm_fd, data.res);
141
142 data.max_dotclock = i915_max_dotclock(&data);
143 igt_info("Max dotclock: %d kHz\n", data.max_dotclock);
144
145 test(&data);
146
147 igt_display_fini(&data.display);
148 igt_reset_connectors();
149 drmModeFreeResources(data.res);
150 }
151