2 * Copyright © 2009 Intel Corporation
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:
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
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
24 * Eric Anholt <eric@anholt.net>
28 /** @file gem_pread_after_blit.c
30 * This is a test of pread's behavior when getting values out of just-drawn-to
33 * The goal is to catch failure in the whole-buffer-flush or
34 * ranged-buffer-flush paths in the kernel.
49 #include "intel_bufmgr.h"
50 #include "intel_batchbuffer.h"
51 #include "intel_gpu_tools.h"
53 static drm_intel_bufmgr *bufmgr;
54 struct intel_batchbuffer *batch;
55 static const int width = 512, height = 512;
56 static const int size = 1024 * 1024;
58 #define PAGE_SIZE 4096
61 create_bo(uint32_t val)
67 bo = drm_intel_bo_alloc(bufmgr, "src bo", size, 4096);
69 /* Fill the BO with dwords starting at start_val */
70 drm_intel_bo_map(bo, 1);
73 for (i = 0; i < 1024 * 1024 / 4; i++)
76 drm_intel_bo_unmap(bo);
82 verify_large_read(drm_intel_bo *bo, uint32_t val)
84 uint32_t buf[size / 4];
87 drm_intel_bo_get_subdata(bo, 0, size, buf);
89 for (i = 0; i < size / 4; i++) {
92 "Unexpected value 0x%08x instead of "
93 "0x%08x at offset 0x%08x (%p)\n",
94 buf[i], val, i * 4, buf);
101 /** This reads at the size that Mesa usees for software fallbacks. */
103 verify_small_read(drm_intel_bo *bo, uint32_t val)
105 uint32_t buf[4096 / 4];
108 for (i = 0; i < 4096 / 4; i++)
111 for (offset = 0; offset < size; offset += PAGE_SIZE) {
112 drm_intel_bo_get_subdata(bo, offset, PAGE_SIZE, buf);
114 for (i = 0; i < PAGE_SIZE; i += 4) {
115 if (buf[i / 4] != val) {
117 "Unexpected value 0x%08x instead of "
118 "0x%08x at offset 0x%08x\n",
119 buf[i / 4], val, i * 4);
127 static void do_test(int fd, int cache_level,
128 drm_intel_bo *src[2],
129 const uint32_t start[2],
130 drm_intel_bo *tmp[2],
133 if (cache_level != -1) {
134 gem_set_caching(fd, tmp[0]->handle, cache_level);
135 gem_set_caching(fd, tmp[1]->handle, cache_level);
141 /* First, do a full-buffer read after blitting */
142 intel_copy_bo(batch, tmp[0], src[0], width, height);
143 verify_large_read(tmp[0], start[0]);
144 intel_copy_bo(batch, tmp[0], src[1], width, height);
145 verify_large_read(tmp[0], start[1]);
147 intel_copy_bo(batch, tmp[0], src[0], width, height);
148 verify_small_read(tmp[0], start[0]);
149 intel_copy_bo(batch, tmp[0], src[1], width, height);
150 verify_small_read(tmp[0], start[1]);
152 intel_copy_bo(batch, tmp[0], src[0], width, height);
153 verify_large_read(tmp[0], start[0]);
155 intel_copy_bo(batch, tmp[0], src[0], width, height);
156 intel_copy_bo(batch, tmp[1], src[1], width, height);
157 verify_large_read(tmp[0], start[0]);
158 verify_large_read(tmp[1], start[1]);
160 intel_copy_bo(batch, tmp[0], src[0], width, height);
161 intel_copy_bo(batch, tmp[1], src[1], width, height);
162 verify_large_read(tmp[1], start[1]);
163 verify_large_read(tmp[0], start[0]);
165 intel_copy_bo(batch, tmp[1], src[0], width, height);
166 intel_copy_bo(batch, tmp[0], src[1], width, height);
167 verify_large_read(tmp[0], start[1]);
168 verify_large_read(tmp[1], start[0]);
173 main(int argc, char **argv)
175 const uint32_t start[2] = {0, 1024 * 1024 / 4};
176 drm_intel_bo *src[2], *dst[2];
179 drmtest_subtest_init(argc, argv);
180 drmtest_skip_on_simulation();
184 bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
185 drm_intel_bufmgr_gem_enable_reuse(bufmgr);
186 batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
188 src[0] = create_bo(start[0]);
189 src[1] = create_bo(start[1]);
191 dst[0] = drm_intel_bo_alloc(bufmgr, "dst bo", size, 4096);
192 dst[1] = drm_intel_bo_alloc(bufmgr, "dst bo", size, 4096);
194 drmtest_subtest("normal")
195 do_test(fd, -1, src, start, dst, 1);
197 drmtest_subtest("interruptible") {
198 drmtest_fork_signal_helper();
199 do_test(fd, -1, src, start, dst, 100);
200 drmtest_stop_signal_helper();
203 drmtest_subtest("normal-uncached")
204 do_test(fd, 0, src, start, dst, 1);
206 drmtest_subtest("interruptible-uncached") {
207 drmtest_fork_signal_helper();
208 do_test(fd, 0, src, start, dst, 100);
209 drmtest_stop_signal_helper();
212 drmtest_subtest("normal-snoop")
213 do_test(fd, 1, src, start, dst, 1);
215 drmtest_subtest("interruptible-snoop") {
216 drmtest_fork_signal_helper();
217 do_test(fd, 1, src, start, dst, 100);
218 drmtest_stop_signal_helper();
221 drmtest_subtest("normal-display")
222 do_test(fd, 2, src, start, dst, 1);
224 drmtest_subtest("interruptible-display") {
225 drmtest_fork_signal_helper();
226 do_test(fd, 2, src, start, dst, 100);
227 drmtest_stop_signal_helper();
229 drm_intel_bo_unreference(src[0]);
230 drm_intel_bo_unreference(src[1]);
231 drm_intel_bo_unreference(dst[0]);
232 drm_intel_bo_unreference(dst[1]);
234 intel_batchbuffer_free(batch);
235 drm_intel_bufmgr_destroy(bufmgr);
239 return drmtest_retval();