1 /*
2 * Copyright © 2008 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 * Eric Anholt <eric@anholt.net>
25 *
26 */
27
28 #include "igt.h"
29 #include <unistd.h>
30 #include <stdlib.h>
31 #include <stdio.h>
32 #include <string.h>
33 #include <fcntl.h>
34 #include <inttypes.h>
35 #include <errno.h>
36 #include <sys/stat.h>
37 #include <sys/ioctl.h>
38 #include "drm.h"
39
40 #define OBJECT_SIZE 16384
41
42 static int
do_read(int fd,int handle,void * buf,int offset,int size)43 do_read(int fd, int handle, void *buf, int offset, int size)
44 {
45 struct drm_i915_gem_pread gem_pread;
46
47 /* Ensure that we don't have any convenient data in buf in case
48 * we fail.
49 */
50 memset(buf, 0xd0, size);
51
52 memset(&gem_pread, 0, sizeof(gem_pread));
53 gem_pread.handle = handle;
54 gem_pread.data_ptr = to_user_pointer(buf);
55 gem_pread.size = size;
56 gem_pread.offset = offset;
57
58 return ioctl(fd, DRM_IOCTL_I915_GEM_PREAD, &gem_pread);
59 }
60
61 static int
do_write(int fd,int handle,void * buf,int offset,int size)62 do_write(int fd, int handle, void *buf, int offset, int size)
63 {
64 struct drm_i915_gem_pwrite gem_pwrite;
65
66 memset(&gem_pwrite, 0, sizeof(gem_pwrite));
67 gem_pwrite.handle = handle;
68 gem_pwrite.data_ptr = to_user_pointer(buf);
69 gem_pwrite.size = size;
70 gem_pwrite.offset = offset;
71
72 return ioctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &gem_pwrite);
73 }
74
75 int fd;
76 uint32_t handle;
77
78 igt_main
79 {
80 uint8_t expected[OBJECT_SIZE];
81 uint8_t buf[OBJECT_SIZE];
82 int ret;
83
84 igt_skip_on_simulation();
85
86 igt_fixture {
87 fd = drm_open_driver(DRIVER_INTEL);
88
89 handle = gem_create(fd, OBJECT_SIZE);
90 }
91
92 igt_subtest("new-obj") {
93 igt_info("Testing contents of newly created object.\n");
94 ret = do_read(fd, handle, buf, 0, OBJECT_SIZE);
95 igt_assert(ret == 0);
96 memset(&expected, 0, sizeof(expected));
97 igt_assert(memcmp(expected, buf, sizeof(expected)) == 0);
98 }
99
100 igt_subtest("beyond-EOB") {
101 igt_info("Testing read beyond end of buffer.\n");
102 ret = do_read(fd, handle, buf, OBJECT_SIZE / 2, OBJECT_SIZE);
103 igt_assert(ret == -1 && errno == EINVAL);
104 }
105
106 igt_subtest("read-write") {
107 igt_info("Testing full write of buffer\n");
108 memset(buf, 0, sizeof(buf));
109 memset(buf + 1024, 0x01, 1024);
110 memset(expected + 1024, 0x01, 1024);
111 ret = do_write(fd, handle, buf, 0, OBJECT_SIZE);
112 igt_assert(ret == 0);
113 ret = do_read(fd, handle, buf, 0, OBJECT_SIZE);
114 igt_assert(ret == 0);
115 igt_assert(memcmp(buf, expected, sizeof(buf)) == 0);
116
117 igt_info("Testing partial write of buffer\n");
118 memset(buf + 4096, 0x02, 1024);
119 memset(expected + 4096, 0x02, 1024);
120 ret = do_write(fd, handle, buf + 4096, 4096, 1024);
121 igt_assert(ret == 0);
122 ret = do_read(fd, handle, buf, 0, OBJECT_SIZE);
123 igt_assert(ret == 0);
124 igt_assert(memcmp(buf, expected, sizeof(buf)) == 0);
125
126 igt_info("Testing partial read of buffer\n");
127 ret = do_read(fd, handle, buf, 512, 1024);
128 igt_assert(ret == 0);
129 igt_assert(memcmp(buf, expected + 512, 1024) == 0);
130 }
131
132 igt_subtest("read-bad-handle") {
133 igt_info("Testing read of bad buffer handle\n");
134 ret = do_read(fd, 1234, buf, 0, 1024);
135 igt_assert(ret == -1 && errno == ENOENT);
136 }
137
138 igt_subtest("write-bad-handle") {
139 igt_info("Testing write of bad buffer handle\n");
140 ret = do_write(fd, 1234, buf, 0, 1024);
141 igt_assert(ret == -1 && errno == ENOENT);
142 }
143
144 igt_fixture
145 close(fd);
146 }
147