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
|
/*
* Copyright © 2019 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 "config.h"
#include "igt.h"
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <linux/fb.h>
#include "igt.h"
static void mode_tests(int fd)
{
struct fb_var_screeninfo var_info;
struct fb_fix_screeninfo fix_info;
igt_fixture {
igt_require(ioctl(fd, FBIOGET_VSCREENINFO, &var_info) == 0);
igt_require(ioctl(fd, FBIOGET_FSCREENINFO, &fix_info) == 0);
}
igt_describe("Check if screeninfo is valid");
igt_subtest("info") {
unsigned long size;
size = var_info.yres * fix_info.line_length;
igt_assert_f(size <= fix_info.smem_len,
"screen size (%d x %d) of pitch %d does not fit within mappable area of size %u\n",
var_info.xres, var_info.yres,
fix_info.line_length,
fix_info.smem_len);
}
}
static void framebuffer_tests(int fd)
{
const int values[] = { 0, 0x55, 0xaa, 0xff };
struct fb_fix_screeninfo fix_info;
unsigned char * volatile map;
unsigned char * volatile buf;
volatile size_t pagesize;
igt_fixture {
long ret;
igt_require(ioctl(fd, FBIOGET_FSCREENINFO, &fix_info) == 0);
igt_assert(fix_info.smem_len);
map = mmap(NULL, fix_info.smem_len,
PROT_WRITE, MAP_SHARED, fd, 0);
igt_assert(map != MAP_FAILED);
buf = malloc(fix_info.smem_len);
igt_require(buf);
ret = sysconf(_SC_PAGESIZE);
igt_require(ret != -1);
pagesize = ret;
}
igt_describe("Check read operations on framebuffer memory");
igt_subtest("read") {
ssize_t ret;
/* fill framebuffer and compare */
for (int i = 0; i < ARRAY_SIZE(values); i++) {
memset(map, values[i], fix_info.smem_len);
ret = pread(fd, buf, fix_info.smem_len, 0);
igt_assert_f(ret == (ssize_t)fix_info.smem_len,
"pread failed, ret=%zd\n", ret);
igt_assert_f(!memcmp(map, buf, fix_info.smem_len),
"read differs from mapped framebuffer for %x\n",
values[i]);
}
}
igt_describe("Check read operations on unaligned locations in framebuffer memory");
igt_subtest("unaligned-read") {
const unsigned char *pos;
ssize_t ret;
size_t len;
off_t off;
off = pagesize + (pagesize >> 2); /* 1.25 * pagesize */
len = (pagesize << 2) + (pagesize >> 1); /* 4.5 * pagesize */
igt_require_f(off + len < fix_info.smem_len,
"framebuffer too small to test\n");
/* read at unaligned location and compare */
memset(map, 0, fix_info.smem_len);
memset(&map[off], 0x55, len);
memset(buf, 0xff, fix_info.smem_len);
ret = pread(fd, &buf[off], len, off);
igt_assert_f(ret == (ssize_t)len,
"pread failed, ret=%zd\n", ret);
pos = memchr(buf, 0x55, fix_info.smem_len);
igt_assert_f(pos, "0x55 not found within read buffer\n");
igt_assert_f(pos == &buf[off],
"0x55 found at pos %zu, expected %lld\n",
pos - buf, (long long)off);
pos = memchr(&buf[off], 0xff, fix_info.smem_len - off);
igt_assert_f(pos, "0xff not found within read buffer\n");
igt_assert_f(pos == &buf[off + len],
"0xff found at pos %zu, expected %lld\n",
pos - buf, (long long)(off + len));
pos = memchr(&buf[off + len],
0x55,
fix_info.smem_len - (off + len));
igt_assert_f(pos,
"found 0x55 at pos %zu, none expected\n",
pos - buf);
}
igt_fixture {
free(buf);
/* don't leave garbage on the screen */
memset(map, 0, fix_info.smem_len);
munmap(map, fix_info.smem_len);
}
}
igt_main
{
volatile int fd = -1;
/*
* Should this test focus on the fbdev independent of any drm driver,
* or should it look for fbdev of a particular device?
*/
igt_fixture {
fd = open("/dev/fb0", O_RDWR);
if (fd < 0) {
drm_load_module(DRIVER_ANY);
fd = open("/dev/fb0", O_RDWR);
}
igt_require_f(fd != -1, "/dev/fb0\n");
}
igt_describe("Check modesetting");
igt_subtest_group {
mode_tests(fd);
}
igt_describe("Check framebuffer access");
igt_subtest_group {
framebuffer_tests(fd);
}
igt_fixture {
close(fd);
}
}
|
