1 /*
2 * Copyright © 2014 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 <errno.h>
27 #include <limits.h>
28 #include <stdbool.h>
29 #include <stdio.h>
30 #include <string.h>
31
32
33 IGT_TEST_DESCRIPTION(
34 "Use the display CRC support to validate pwrite to an already uncached future scanout buffer.");
35
36 typedef struct {
37 int drm_fd;
38 igt_display_t display;
39 struct igt_fb fb[2];
40 igt_output_t *output;
41 igt_plane_t *primary;
42 enum pipe pipe;
43 igt_crc_t ref_crc;
44 igt_pipe_crc_t *pipe_crc;
45 uint32_t devid;
46 } data_t;
47
test(data_t * data)48 static void test(data_t *data)
49 {
50 igt_output_t *output = data->output;
51 struct igt_fb *fb = &data->fb[1];
52 drmModeModeInfo *mode;
53 uint32_t caching;
54 void *buf;
55 igt_crc_t crc;
56
57 mode = igt_output_get_mode(output);
58
59 /* create a non-white fb where we can pwrite later */
60 igt_create_pattern_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
61 DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE, fb);
62
63 /* flip to it to make it UC/WC and fully flushed */
64 drmModeSetPlane(data->drm_fd,
65 data->primary->drm_plane->plane_id,
66 output->config.crtc->crtc_id,
67 fb->fb_id, 0,
68 0, 0, fb->width, fb->height,
69 0, 0, fb->width << 16, fb->height << 16);
70
71 /* flip back the original white buffer */
72 drmModeSetPlane(data->drm_fd,
73 data->primary->drm_plane->plane_id,
74 output->config.crtc->crtc_id,
75 data->fb[0].fb_id, 0,
76 0, 0, fb->width, fb->height,
77 0, 0, fb->width << 16, fb->height << 16);
78
79 /* make sure caching mode has become UC/WT */
80 caching = gem_get_caching(data->drm_fd, fb->gem_handle);
81 igt_assert(caching == I915_CACHING_NONE || caching == I915_CACHING_DISPLAY);
82
83 /* use pwrite to make the other fb all white too */
84 buf = malloc(fb->size);
85 igt_assert(buf != NULL);
86 memset(buf, 0xff, fb->size);
87 gem_write(data->drm_fd, fb->gem_handle, 0, buf, fb->size);
88 free(buf);
89
90 /* and flip to it */
91 drmModeSetPlane(data->drm_fd,
92 data->primary->drm_plane->plane_id,
93 output->config.crtc->crtc_id,
94 fb->fb_id, 0,
95 0, 0, fb->width, fb->height,
96 0, 0, fb->width << 16, fb->height << 16);
97
98 /* check that the crc is as expected, which requires that caches got flushed */
99 igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
100 igt_assert_crc_equal(&crc, &data->ref_crc);
101 }
102
prepare_crtc(data_t * data)103 static void prepare_crtc(data_t *data)
104 {
105 igt_display_t *display = &data->display;
106 igt_output_t *output = data->output;
107 drmModeModeInfo *mode;
108
109 /* select the pipe we want to use */
110 igt_output_set_pipe(output, data->pipe);
111
112 mode = igt_output_get_mode(output);
113
114 /* create a white reference fb and flip to it */
115 igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
116 DRM_FORMAT_XRGB8888, LOCAL_DRM_FORMAT_MOD_NONE,
117 1.0, 1.0, 1.0, &data->fb[0]);
118
119 data->primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
120
121 igt_plane_set_fb(data->primary, &data->fb[0]);
122 igt_display_commit(display);
123
124 if (data->pipe_crc)
125 igt_pipe_crc_free(data->pipe_crc);
126
127 data->pipe_crc = igt_pipe_crc_new(data->drm_fd, data->pipe,
128 INTEL_PIPE_CRC_SOURCE_AUTO);
129
130 /* get reference crc for the white fb */
131 igt_pipe_crc_collect_crc(data->pipe_crc, &data->ref_crc);
132 }
133
cleanup_crtc(data_t * data)134 static void cleanup_crtc(data_t *data)
135 {
136 igt_display_t *display = &data->display;
137 igt_output_t *output = data->output;
138
139 igt_pipe_crc_free(data->pipe_crc);
140 data->pipe_crc = NULL;
141
142 igt_plane_set_fb(data->primary, NULL);
143
144 igt_output_set_pipe(output, PIPE_ANY);
145 igt_display_commit(display);
146
147 igt_remove_fb(data->drm_fd, &data->fb[0]);
148 igt_remove_fb(data->drm_fd, &data->fb[1]);
149
150 }
151
run_test(data_t * data)152 static void run_test(data_t *data)
153 {
154 igt_display_t *display = &data->display;
155 igt_output_t *output;
156 enum pipe pipe;
157
158 for_each_pipe_with_valid_output(display, pipe, output) {
159 data->output = output;
160 data->pipe = pipe;
161
162 prepare_crtc(data);
163 test(data);
164 cleanup_crtc(data);
165
166 /* once is enough */
167 return;
168 }
169
170 igt_skip("no valid crtc/connector combinations found\n");
171 }
172
173 static data_t data;
174
175 igt_simple_main
176 {
177 igt_skip_on_simulation();
178
179 data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
180
181 data.devid = intel_get_drm_devid(data.drm_fd);
182
183 kmstest_set_vt_graphics_mode();
184
185 igt_require_pipe_crc(data.drm_fd);
186
187 igt_display_require(&data.display, data.drm_fd);
188
189 run_test(&data);
190
191 igt_display_fini(&data.display);
192 }
193