2 * Copyright © 2008 Intel Corporation
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:
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
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
24 * Eric Anholt <eric@anholt.net>
38 #define OBJECT_SIZE 16384
40 int do_read(int fd, int handle, void *buf, int offset, int size)
42 struct drm_mm_pread_args read;
44 /* Ensure that we don't have any convenient data in buf in case
47 memset(buf, 0xd0, size);
49 memset(&read, 0, sizeof(read));
55 return ioctl(fd, DRM_IOCTL_MM_PREAD, &read);
58 int do_write(int fd, int handle, void *buf, int offset, int size)
60 struct drm_mm_pwrite_args write;
62 memset(&write, 0, sizeof(write));
63 write.handle = handle;
66 write.offset = offset;
68 return ioctl(fd, DRM_IOCTL_MM_PWRITE, &write);
71 int main(int argc, char **argv)
74 struct drm_mm_alloc_args alloc;
75 struct drm_mm_mmap_args mmap;
76 struct drm_mm_unreference_args unref;
77 uint8_t expected[OBJECT_SIZE];
78 uint8_t buf[OBJECT_SIZE];
84 memset(&mmap, 0, sizeof(mmap));
85 mmap.handle = 0x10101010;
88 printf("Testing mmaping of bad object.\n");
89 ret = ioctl(fd, DRM_IOCTL_MM_MMAP, &mmap);
90 assert(ret == -1 && errno == EINVAL);
92 memset(&alloc, 0, sizeof(alloc));
93 alloc.size = OBJECT_SIZE;
94 ret = ioctl(fd, DRM_IOCTL_MM_ALLOC, &alloc);
96 handle = alloc.handle;
98 printf("Testing mmaping of newly allocated object.\n");
101 mmap.size = OBJECT_SIZE;
102 ret = ioctl(fd, DRM_IOCTL_MM_MMAP, &mmap);
105 printf("Testing contents of newly allocated object.\n");
106 memset(expected, 0, sizeof(expected));
107 assert(memcmp(mmap.addr, expected, sizeof(expected)) == 0);
109 printf("Testing coherency of writes and mmap reads.\n");
110 memset(buf, 0, sizeof(buf));
111 memset(buf + 1024, 0x01, 1024);
112 memset(expected + 1024, 0x01, 1024);
113 ret = do_write(fd, handle, buf, 0, OBJECT_SIZE);
115 assert(memcmp(buf, mmap.addr, sizeof(buf)) == 0);
117 printf("Testing that mapping stays after unreference\n");
118 unref.handle = handle;
119 ret = ioctl(fd, DRM_IOCTL_MM_UNREFERENCE, &unref);
121 assert(memcmp(buf, mmap.addr, sizeof(buf)) == 0);
123 printf("Testing unmapping\n");
124 munmap(mmap.addr, OBJECT_SIZE);