1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
|
// SPDX-License-Identifier: MIT
#include "igt.h"
#include "igt_vgem.h"
#include <linux/dma-buf.h>
#include <sys/poll.h>
IGT_TEST_DESCRIPTION("Tests for sync_file support in dma-buf");
struct igt_dma_buf_sync_file {
__u32 flags;
__s32 fd;
};
#define IGT_DMA_BUF_IOCTL_EXPORT_SYNC_FILE _IOWR(DMA_BUF_BASE, 2, struct igt_dma_buf_sync_file)
static bool has_dmabuf_export_sync_file(int fd)
{
struct vgem_bo bo;
int dmabuf, ret;
struct igt_dma_buf_sync_file arg;
bo.width = 1;
bo.height = 1;
bo.bpp = 32;
vgem_create(fd, &bo);
dmabuf = prime_handle_to_fd(fd, bo.handle);
gem_close(fd, bo.handle);
arg.flags = DMA_BUF_SYNC_WRITE;
arg.fd = -1;
ret = igt_ioctl(dmabuf, IGT_DMA_BUF_IOCTL_EXPORT_SYNC_FILE, &arg);
close(dmabuf);
igt_assert(ret == 0 || errno == ENOTTY);
return ret == 0;
}
static int dmabuf_export_sync_file(int dmabuf, uint32_t flags)
{
struct igt_dma_buf_sync_file arg;
arg.flags = flags;
arg.fd = -1;
do_ioctl(dmabuf, IGT_DMA_BUF_IOCTL_EXPORT_SYNC_FILE, &arg);
return arg.fd;
}
static bool dmabuf_busy(int dmabuf, uint32_t flags)
{
struct pollfd pfd = { .fd = dmabuf };
/* If DMA_BUF_SYNC_WRITE is set, we don't want to set POLLIN or
* else poll() may return a non-zero value if there are only read
* fences because POLLIN is ready even if POLLOUT isn't.
*/
if (flags & DMA_BUF_SYNC_WRITE)
pfd.events |= POLLOUT;
else if (flags & DMA_BUF_SYNC_READ)
pfd.events |= POLLIN;
return poll(&pfd, 1, 0) == 0;
}
static bool sync_file_busy(int sync_file)
{
struct pollfd pfd = { .fd = sync_file, .events = POLLIN };
return poll(&pfd, 1, 0) == 0;
}
static bool dmabuf_sync_file_busy(int dmabuf, uint32_t flags)
{
int sync_file;
bool busy;
sync_file = dmabuf_export_sync_file(dmabuf, flags);
busy = sync_file_busy(sync_file);
close(sync_file);
return busy;
}
static void test_export_basic(int fd)
{
struct vgem_bo bo;
int dmabuf;
uint32_t fence;
igt_require(has_dmabuf_export_sync_file(fd));
bo.width = 1;
bo.height = 1;
bo.bpp = 32;
vgem_create(fd, &bo);
dmabuf = prime_handle_to_fd(fd, bo.handle);
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_WRITE));
fence = vgem_fence_attach(fd, &bo, 0);
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(dmabuf_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(dmabuf_busy(dmabuf, DMA_BUF_SYNC_RW));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_RW));
vgem_fence_signal(fd, fence);
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_RW));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_RW));
fence = vgem_fence_attach(fd, &bo, VGEM_FENCE_WRITE);
igt_assert(dmabuf_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(dmabuf_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(dmabuf_busy(dmabuf, DMA_BUF_SYNC_RW));
igt_assert(dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_RW));
vgem_fence_signal(fd, fence);
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(!dmabuf_busy(dmabuf, DMA_BUF_SYNC_RW));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_WRITE));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_RW));
close(dmabuf);
gem_close(fd, bo.handle);
}
static void test_export_before_signal(int fd)
{
struct vgem_bo bo;
int dmabuf, read_fd, write_fd;
uint32_t fence;
igt_require(has_dmabuf_export_sync_file(fd));
bo.width = 1;
bo.height = 1;
bo.bpp = 32;
vgem_create(fd, &bo);
dmabuf = prime_handle_to_fd(fd, bo.handle);
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(!dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_WRITE));
fence = vgem_fence_attach(fd, &bo, 0);
read_fd = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_READ);
write_fd = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_WRITE);
igt_assert(!sync_file_busy(read_fd));
igt_assert(sync_file_busy(write_fd));
vgem_fence_signal(fd, fence);
igt_assert(!sync_file_busy(read_fd));
igt_assert(!sync_file_busy(write_fd));
close(read_fd);
close(write_fd);
fence = vgem_fence_attach(fd, &bo, VGEM_FENCE_WRITE);
read_fd = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_READ);
write_fd = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_WRITE);
igt_assert(sync_file_busy(read_fd));
igt_assert(sync_file_busy(write_fd));
vgem_fence_signal(fd, fence);
igt_assert(!sync_file_busy(read_fd));
igt_assert(!sync_file_busy(write_fd));
close(read_fd);
close(write_fd);
close(dmabuf);
gem_close(fd, bo.handle);
}
static void test_export_multiwait(int fd)
{
struct vgem_bo bo;
int dmabuf, sync_file;
uint32_t fence1, fence2, fence3;
igt_require(has_dmabuf_export_sync_file(fd));
bo.width = 1;
bo.height = 1;
bo.bpp = 32;
vgem_create(fd, &bo);
dmabuf = prime_handle_to_fd(fd, bo.handle);
fence1 = vgem_fence_attach(fd, &bo, 0);
fence2 = vgem_fence_attach(fd, &bo, 0);
sync_file = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_WRITE);
fence3 = vgem_fence_attach(fd, &bo, 0);
igt_assert(sync_file_busy(sync_file));
vgem_fence_signal(fd, fence1);
igt_assert(sync_file_busy(sync_file));
vgem_fence_signal(fd, fence2);
igt_assert(!sync_file_busy(sync_file));
vgem_fence_signal(fd, fence3);
close(sync_file);
close(dmabuf);
gem_close(fd, bo.handle);
}
static void test_export_wait_after_attach(int fd)
{
struct vgem_bo bo;
int dmabuf, read_sync_file, write_sync_file;
uint32_t fence1, fence2;
igt_require(has_dmabuf_export_sync_file(fd));
bo.width = 1;
bo.height = 1;
bo.bpp = 32;
vgem_create(fd, &bo);
dmabuf = prime_handle_to_fd(fd, bo.handle);
read_sync_file = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_READ);
write_sync_file = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_WRITE);
fence1 = vgem_fence_attach(fd, &bo, VGEM_FENCE_WRITE);
igt_assert(!sync_file_busy(read_sync_file));
igt_assert(!sync_file_busy(write_sync_file));
close(read_sync_file);
close(write_sync_file);
/* These wait on fence1 */
read_sync_file = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_READ);
write_sync_file = dmabuf_export_sync_file(dmabuf, DMA_BUF_SYNC_WRITE);
igt_assert(sync_file_busy(read_sync_file));
igt_assert(sync_file_busy(write_sync_file));
vgem_fence_signal(fd, fence1);
fence2 = vgem_fence_attach(fd, &bo, VGEM_FENCE_WRITE);
/* fence1 has signaled */
igt_assert(!sync_file_busy(read_sync_file));
igt_assert(!sync_file_busy(write_sync_file));
/* fence2 has not */
igt_assert(dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_READ));
igt_assert(dmabuf_sync_file_busy(dmabuf, DMA_BUF_SYNC_WRITE));
vgem_fence_signal(fd, fence2);
close(read_sync_file);
close(write_sync_file);
close(dmabuf);
gem_close(fd, bo.handle);
}
igt_main
{
int fd;
igt_fixture {
fd = drm_open_driver(DRIVER_VGEM);
}
igt_describe("Sanity test for exporting a sync_file from a dma-buf.");
igt_subtest("export-basic")
test_export_basic(fd);
igt_describe("Test exporting a sync_file from a dma-buf before "
"signaling any of its fences.");
igt_subtest("export-before-signal")
test_export_before_signal(fd);
igt_describe("Test exporting a sync_file from a dma-buf with multiple "
"fences on it.");
igt_subtest("export-multiwait")
test_export_multiwait(fd);
igt_describe("Test exporting a sync_file from a dma-buf then adding "
"fences to the dma-buf before we wait. The sync_file "
"should snapshot the current set of fences and not wait "
"for any fences added after it was exported.");
igt_subtest("export-wait-after-attach")
test_export_wait_after_attach(fd);
}
|
