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
|
/*
* Copyright © 2017 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "i915/gem.h"
#include "i915/gem_create.h"
#include "igt.h"
#include "igt_types.h"
/**
* TEST: gem close
* Category: Core
* Mega feature: General Core features
* Sub-category: driver
* Functionality: driver handler
* Feature: mapping
* Test category: GEM_Legacy
*
* SUBTEST: basic
*
* SUBTEST: many-handles-one-vma
*/
static int batch_create(int fd)
{
const uint32_t bbe = MI_BATCH_BUFFER_END;
uint32_t handle;
handle = gem_create(fd, 4096);
gem_write(fd, handle, 0, &bbe, sizeof(bbe));
return handle;
}
static int allows_duplicate(int fd)
{
struct drm_i915_gem_exec_object2 obj[2] = {
{ .handle = batch_create(fd), },
};
struct drm_i915_gem_execbuffer2 execbuf = {
.buffers_ptr = to_user_pointer(obj),
.buffer_count = 1,
};
int err;
gem_execbuf(fd, &execbuf);
obj[1] = obj[0];
execbuf.buffer_count = 2;
err = __gem_execbuf(fd, &execbuf);
gem_close(fd, obj[0].handle);
return err;
}
static bool is_duplicate(int err)
{
return err == -EINVAL || err == -EALREADY;
}
static void test_many_handles(int fd)
{
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 obj[2];
uint32_t clones[128]; /* XXX try with 1024 */
uint32_t original;
int expected;
expected = allows_duplicate(fd);
if (expected)
igt_assert(is_duplicate(expected));
original = batch_create(fd);
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(obj);
execbuf.buffer_count = 1;
memset(obj, 0, sizeof(obj));
obj[0].handle = original;
gem_execbuf(fd, &execbuf);
for (int i = 0; i < ARRAY_SIZE(clones); i++) {
clones[i] = gem_open(fd, gem_flink(fd, original));
obj[0].handle = clones[i];
gem_execbuf(fd, &execbuf);
}
/*
* We do not normally allow the same object to be referenced multiple
* times within an execbuf; hence why this practice of cloning a handle
* is only found within test cases.
*/
execbuf.buffer_count = 2;
obj[0].handle = original;
for (int i = 0; i < ARRAY_SIZE(clones); i++) {
obj[1].handle = clones[i];
igt_assert_eq(__gem_execbuf(fd, &execbuf), expected);
}
/* Any other clone pair should also be detected */
obj[1].handle = clones[0]; /* (last, first) */
igt_assert_eq(__gem_execbuf(fd, &execbuf), expected);
execbuf.buffer_count = 1;
/* Now close the original having used every clone */
obj[0].handle = original;
gem_close(fd, original);
igt_assert_eq(__gem_execbuf(fd, &execbuf), -ENOENT);
/* All clones should still be operational */
for (int i = 0; i < ARRAY_SIZE(clones); i++) {
obj[0].handle = clones[i];
gem_execbuf(fd, &execbuf);
/* ... until closed */
gem_close(fd, clones[i]);
igt_assert_eq(__gem_execbuf(fd, &execbuf), -ENOENT);
}
}
igt_main
{
igt_fd_t(fd);
igt_fixture {
/* Create an flink requires DRM_AUTH */
fd = drm_open_driver_master(DRIVER_INTEL);
igt_require_gem(fd);
}
igt_subtest("basic")
gem_close(fd, gem_create(fd, 4096));
igt_subtest("many-handles-one-vma")
test_many_handles(fd);
}
|
