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
|
/*
* Copyright © 2008 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <fcntl.h>
#include <inttypes.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include "drm.h"
#include "i915_drm.h"
#include "drmtest.h"
#define OBJECT_SIZE 16384
static int
do_read(int fd, int handle, void *buf, int offset, int size)
{
struct drm_i915_gem_pread read;
/* Ensure that we don't have any convenient data in buf in case
* we fail.
*/
memset(buf, 0xd0, size);
memset(&read, 0, sizeof(read));
read.handle = handle;
read.data_ptr = (uintptr_t)buf;
read.size = size;
read.offset = offset;
return ioctl(fd, DRM_IOCTL_I915_GEM_PREAD, &read);
}
static int
do_write(int fd, int handle, void *buf, int offset, int size)
{
struct drm_i915_gem_pwrite write;
memset(&write, 0, sizeof(write));
write.handle = handle;
write.data_ptr = (uintptr_t)buf;
write.size = size;
write.offset = offset;
return ioctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &write);
}
int main(int argc, char **argv)
{
int fd;
uint8_t expected[OBJECT_SIZE];
uint8_t buf[OBJECT_SIZE];
int ret;
int handle;
fd = drm_open_any();
handle = gem_create(fd, OBJECT_SIZE);
printf("Testing contents of newly created object.\n");
ret = do_read(fd, handle, buf, 0, OBJECT_SIZE);
assert(ret == 0);
memset(&expected, 0, sizeof(expected));
assert(memcmp(expected, buf, sizeof(expected)) == 0);
printf("Testing read beyond end of buffer.\n");
ret = do_read(fd, handle, buf, OBJECT_SIZE / 2, OBJECT_SIZE);
assert(ret == -1 && errno == EINVAL);
printf("Testing full write of buffer\n");
memset(buf, 0, sizeof(buf));
memset(buf + 1024, 0x01, 1024);
memset(expected + 1024, 0x01, 1024);
ret = do_write(fd, handle, buf, 0, OBJECT_SIZE);
assert(ret == 0);
ret = do_read(fd, handle, buf, 0, OBJECT_SIZE);
assert(ret == 0);
assert(memcmp(buf, expected, sizeof(buf)) == 0);
printf("Testing partial write of buffer\n");
memset(buf + 4096, 0x02, 1024);
memset(expected + 4096, 0x02, 1024);
ret = do_write(fd, handle, buf + 4096, 4096, 1024);
assert(ret == 0);
ret = do_read(fd, handle, buf, 0, OBJECT_SIZE);
assert(ret == 0);
assert(memcmp(buf, expected, sizeof(buf)) == 0);
printf("Testing partial read of buffer\n");
ret = do_read(fd, handle, buf, 512, 1024);
assert(ret == 0);
assert(memcmp(buf, expected + 512, 1024) == 0);
printf("Testing read of bad buffer handle\n");
ret = do_read(fd, 1234, buf, 0, 1024);
assert(ret == -1 && errno == ENOENT);
printf("Testing write of bad buffer handle\n");
ret = do_write(fd, 1234, buf, 0, 1024);
assert(ret == -1 && errno == ENOENT);
close(fd);
return 0;
}
|
