7945ba79102192dcf260fbf73dae2be29d2fa0de
[platform/upstream/intel-gpu-tools.git] / tests / gem_partial_pwrite_pread.c
1 /*
2  * Copyright © 2011 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  * Authors:
24  *    Daniel Vetter <daniel.vetter@ffwll.ch>
25  *
26  */
27
28 #include <stdlib.h>
29 #include <stdio.h>
30 #include <string.h>
31 #include <fcntl.h>
32 #include <inttypes.h>
33 #include <errno.h>
34 #include <sys/stat.h>
35 #include <sys/time.h>
36
37 #include <drm.h>
38
39 #include "ioctl_wrappers.h"
40 #include "drmtest.h"
41 #include "intel_chipset.h"
42 #include "intel_io.h"
43 #include "igt_aux.h"
44
45 /*
46  * Testcase: pwrite/pread consistency when touching partial cachelines
47  *
48  * Some fancy new pwrite/pread optimizations clflush in-line while
49  * reading/writing. Check whether all required clflushes happen.
50  *
51  */
52
53 static drm_intel_bufmgr *bufmgr;
54 struct intel_batchbuffer *batch;
55
56 drm_intel_bo *scratch_bo;
57 drm_intel_bo *staging_bo;
58 #define BO_SIZE (4*4096)
59 uint32_t devid;
60 uint64_t mappable_gtt_limit;
61 int fd;
62
63 static void
64 copy_bo(drm_intel_bo *src, drm_intel_bo *dst)
65 {
66         BLIT_COPY_BATCH_START(devid, 0);
67         OUT_BATCH((3 << 24) | /* 32 bits */
68                   (0xcc << 16) | /* copy ROP */
69                   4096);
70         OUT_BATCH(0 << 16 | 0);
71         OUT_BATCH((BO_SIZE/4096) << 16 | 1024);
72         OUT_RELOC_FENCED(dst, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
73         BLIT_RELOC_UDW(devid);
74         OUT_BATCH(0 << 16 | 0);
75         OUT_BATCH(4096);
76         OUT_RELOC_FENCED(src, I915_GEM_DOMAIN_RENDER, 0, 0);
77         BLIT_RELOC_UDW(devid);
78         ADVANCE_BATCH();
79
80         intel_batchbuffer_flush(batch);
81 }
82
83 static void
84 blt_bo_fill(drm_intel_bo *tmp_bo, drm_intel_bo *bo, int val)
85 {
86         uint8_t *gtt_ptr;
87         int i;
88
89         drm_intel_gem_bo_map_gtt(tmp_bo);
90         gtt_ptr = tmp_bo->virtual;
91
92         for (i = 0; i < BO_SIZE; i++)
93                 gtt_ptr[i] = val;
94
95         drm_intel_gem_bo_unmap_gtt(tmp_bo);
96
97         if (bo->offset < mappable_gtt_limit &&
98             (IS_G33(devid) || intel_gen(devid) >= 4))
99                 igt_trash_aperture();
100
101         copy_bo(tmp_bo, bo);
102 }
103
104 #define MAX_BLT_SIZE 128
105 #define ROUNDS 1000
106 uint8_t tmp[BO_SIZE];
107
108 static void test_partial_reads(void)
109 {
110         int i, j;
111
112         igt_info("checking partial reads\n");
113         for (i = 0; i < ROUNDS; i++) {
114                 int start, len;
115                 int val = i % 256;
116
117                 blt_bo_fill(staging_bo, scratch_bo, i);
118
119                 start = random() % BO_SIZE;
120                 len = random() % (BO_SIZE-start) + 1;
121
122                 drm_intel_bo_get_subdata(scratch_bo, start, len, tmp);
123                 for (j = 0; j < len; j++) {
124                         igt_assert_f(tmp[j] == val,
125                                      "mismatch at %i, got: %i, expected: %i\n",
126                                      j, tmp[j], val);
127                 }
128
129                 igt_progress("partial reads test: ", i, ROUNDS);
130         }
131
132 }
133
134 static void test_partial_writes(void)
135 {
136         int i, j;
137         uint8_t *gtt_ptr;
138
139         igt_info("checking partial writes\n");
140         for (i = 0; i < ROUNDS; i++) {
141                 int start, len;
142                 int val = i % 256;
143
144                 blt_bo_fill(staging_bo, scratch_bo, i);
145
146                 start = random() % BO_SIZE;
147                 len = random() % (BO_SIZE-start) + 1;
148
149                 memset(tmp, i + 63, BO_SIZE);
150
151                 drm_intel_bo_subdata(scratch_bo, start, len, tmp);
152
153                 copy_bo(scratch_bo, staging_bo);
154                 drm_intel_gem_bo_map_gtt(staging_bo);
155                 gtt_ptr = staging_bo->virtual;
156
157                 for (j = 0; j < start; j++) {
158                         igt_assert_f(gtt_ptr[j] == val,
159                                      "mismatch at %i, got: %i, expected: %i\n",
160                                      j, tmp[j], val);
161                 }
162                 for (; j < start + len; j++) {
163                         igt_assert_f(gtt_ptr[j] == tmp[0],
164                                      "mismatch at %i, got: %i, expected: %i\n",
165                                      j, tmp[j], i);
166                 }
167                 for (; j < BO_SIZE; j++) {
168                         igt_assert_f(gtt_ptr[j] == val,
169                                      "mismatch at %i, got: %i, expected: %i\n",
170                                      j, tmp[j], val);
171                 }
172                 drm_intel_gem_bo_unmap_gtt(staging_bo);
173
174                 igt_progress("partial writes test: ", i, ROUNDS);
175         }
176
177 }
178
179 static void test_partial_read_writes(void)
180 {
181         int i, j;
182         uint8_t *gtt_ptr;
183
184         igt_info("checking partial writes after partial reads\n");
185         for (i = 0; i < ROUNDS; i++) {
186                 int start, len;
187                 int val = i % 256;
188
189                 blt_bo_fill(staging_bo, scratch_bo, i);
190
191                 /* partial read */
192                 start = random() % BO_SIZE;
193                 len = random() % (BO_SIZE-start) + 1;
194
195                 drm_intel_bo_get_subdata(scratch_bo, start, len, tmp);
196                 for (j = 0; j < len; j++) {
197                         igt_assert_f(tmp[j] == val,
198                                      "mismatch in read at %i, got: %i, expected: %i\n",
199                                      j, tmp[j], val);
200                 }
201
202                 /* Change contents through gtt to make the pread cachelines
203                  * stale. */
204                 val = (i + 17) % 256;
205                 blt_bo_fill(staging_bo, scratch_bo, val);
206
207                 /* partial write */
208                 start = random() % BO_SIZE;
209                 len = random() % (BO_SIZE-start) + 1;
210
211                 memset(tmp, i + 63, BO_SIZE);
212
213                 drm_intel_bo_subdata(scratch_bo, start, len, tmp);
214
215                 copy_bo(scratch_bo, staging_bo);
216                 drm_intel_gem_bo_map_gtt(staging_bo);
217                 gtt_ptr = staging_bo->virtual;
218
219                 for (j = 0; j < start; j++) {
220                         igt_assert_f(gtt_ptr[j] == val,
221                                      "mismatch at %i, got: %i, expected: %i\n",
222                                      j, tmp[j], val);
223                 }
224                 for (; j < start + len; j++) {
225                         igt_assert_f(gtt_ptr[j] == tmp[0],
226                                      "mismatch at %i, got: %i, expected: %i\n",
227                                      j, tmp[j], tmp[0]);
228                 }
229                 for (; j < BO_SIZE; j++) {
230                         igt_assert_f(gtt_ptr[j] == val,
231                                      "mismatch at %i, got: %i, expected: %i\n",
232                                      j, tmp[j], val);
233                 }
234                 drm_intel_gem_bo_unmap_gtt(staging_bo);
235
236                 igt_progress("partial read/writes test: ", i, ROUNDS);
237         }
238 }
239
240 static void do_tests(int cache_level, const char *suffix)
241 {
242         igt_fixture {
243                 if (cache_level != -1)
244                         gem_set_caching(fd, scratch_bo->handle, cache_level);
245         }
246
247         igt_subtest_f("reads%s", suffix)
248                 test_partial_reads();
249
250         igt_subtest_f("write%s", suffix)
251                 test_partial_writes();
252
253         igt_subtest_f("writes-after-reads%s", suffix)
254                 test_partial_read_writes();
255 }
256
257 igt_main
258 {
259         srandom(0xdeadbeef);
260
261         igt_skip_on_simulation();
262
263         igt_fixture {
264                 fd = drm_open_any();
265
266                 bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
267                 //drm_intel_bufmgr_gem_enable_reuse(bufmgr);
268                 devid = intel_get_drm_devid(fd);
269                 batch = intel_batchbuffer_alloc(bufmgr, devid);
270
271                 /* overallocate the buffers we're actually using because */
272                 scratch_bo = drm_intel_bo_alloc(bufmgr, "scratch bo", BO_SIZE, 4096);
273                 staging_bo = drm_intel_bo_alloc(bufmgr, "staging bo", BO_SIZE, 4096);
274
275                 igt_init_aperture_trashers(bufmgr);
276                 mappable_gtt_limit = gem_mappable_aperture_size();
277         }
278
279         do_tests(-1, "");
280
281         /* Repeat the tests using different levels of snooping */
282         do_tests(0, "-uncached");
283         do_tests(1, "-snoop");
284         do_tests(2, "-display");
285
286         igt_fixture {
287                 igt_cleanup_aperture_trashers();
288                 drm_intel_bufmgr_destroy(bufmgr);
289
290                 close(fd);
291         }
292 }