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 (at) anholt.net> 25 * 26 */ 27 28 #include <stdlib.h> 29 #include <stdio.h> 30 #include <string.h> 31 #include <assert.h> 32 #include <fcntl.h> 33 #include <inttypes.h> 34 #include <errno.h> 35 #include <sys/stat.h> 36 #include "drm.h" 37 #include "i915_drm.h" 38 39 #define OBJECT_SIZE 16384 40 41 int do_read(int fd, int handle, void *buf, int offset, int size) 42 { 43 struct drm_i915_gem_pread read; 44 45 /* Ensure that we don't have any convenient data in buf in case 46 * we fail. 47 */ 48 memset(buf, 0xd0, size); 49 50 memset(&read, 0, sizeof(read)); 51 read.handle = handle; 52 read.data_ptr = (uintptr_t)buf; 53 read.size = size; 54 read.offset = offset; 55 56 return ioctl(fd, DRM_IOCTL_I915_GEM_PREAD, &read); 57 } 58 59 int do_write(int fd, int handle, void *buf, int offset, int size) 60 { 61 struct drm_i915_gem_pwrite write; 62 63 memset(&write, 0, sizeof(write)); 64 write.handle = handle; 65 write.data_ptr = (uintptr_t)buf; 66 write.size = size; 67 write.offset = offset; 68 69 return ioctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &write); 70 } 71 72 int main(int argc, char **argv) 73 { 74 int fd; 75 struct drm_i915_gem_create create; 76 struct drm_i915_gem_mmap mmap; 77 struct drm_gem_close unref; 78 uint8_t expected[OBJECT_SIZE]; 79 uint8_t buf[OBJECT_SIZE]; 80 uint8_t *addr; 81 int ret; 82 int handle; 83 84 fd = drm_open_matching("8086:*", 0); 85 if (fd < 0) { 86 fprintf(stderr, "failed to open intel drm device, skipping\n"); 87 return 0; 88 } 89 90 memset(&mmap, 0, sizeof(mmap)); 91 mmap.handle = 0x10101010; 92 mmap.offset = 0; 93 mmap.size = 4096; 94 printf("Testing mmaping of bad object.\n"); 95 ret = ioctl(fd, DRM_IOCTL_I915_GEM_MMAP, &mmap); 96 assert(ret == -1 && errno == EBADF); 97 98 memset(&create, 0, sizeof(create)); 99 create.size = OBJECT_SIZE; 100 ret = ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create); 101 assert(ret == 0); 102 handle = create.handle; 103 104 printf("Testing mmaping of newly created object.\n"); 105 mmap.handle = handle; 106 mmap.offset = 0; 107 mmap.size = OBJECT_SIZE; 108 ret = ioctl(fd, DRM_IOCTL_I915_GEM_MMAP, &mmap); 109 assert(ret == 0); 110 addr = (uint8_t *)(uintptr_t)mmap.addr_ptr; 111 112 printf("Testing contents of newly created object.\n"); 113 memset(expected, 0, sizeof(expected)); 114 assert(memcmp(addr, expected, sizeof(expected)) == 0); 115 116 printf("Testing coherency of writes and mmap reads.\n"); 117 memset(buf, 0, sizeof(buf)); 118 memset(buf + 1024, 0x01, 1024); 119 memset(expected + 1024, 0x01, 1024); 120 ret = do_write(fd, handle, buf, 0, OBJECT_SIZE); 121 assert(ret == 0); 122 assert(memcmp(buf, addr, sizeof(buf)) == 0); 123 124 printf("Testing that mapping stays after close\n"); 125 unref.handle = handle; 126 ret = ioctl(fd, DRM_IOCTL_GEM_CLOSE, &unref); 127 assert(ret == 0); 128 assert(memcmp(buf, addr, sizeof(buf)) == 0); 129 130 printf("Testing unmapping\n"); 131 munmap(addr, OBJECT_SIZE); 132 133 close(fd); 134 135 return 0; 136 } 137
