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 uint8_t expected[OBJECT_SIZE]; 77 uint8_t buf[OBJECT_SIZE]; 78 int ret; 79 int handle; 80 81 fd = drm_open_matching("8086:*", 0); 82 if (fd < 0) { 83 fprintf(stderr, "failed to open intel drm device, skipping\n"); 84 return 0; 85 } 86 87 memset(&create, 0, sizeof(create)); 88 create.size = OBJECT_SIZE; 89 ret = ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create); 90 assert(ret == 0); 91 handle = create.handle; 92 93 printf("Testing contents of newly created object.\n"); 94 ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); 95 assert(ret == 0); 96 memset(&expected, 0, sizeof(expected)); 97 assert(memcmp(expected, buf, sizeof(expected)) == 0); 98 99 printf("Testing read beyond end of buffer.\n"); 100 ret = do_read(fd, handle, buf, OBJECT_SIZE / 2, OBJECT_SIZE); 101 printf("%d %d\n", ret, errno); 102 assert(ret == -1 && errno == EINVAL); 103 104 printf("Testing full write of buffer\n"); 105 memset(buf, 0, sizeof(buf)); 106 memset(buf + 1024, 0x01, 1024); 107 memset(expected + 1024, 0x01, 1024); 108 ret = do_write(fd, handle, buf, 0, OBJECT_SIZE); 109 assert(ret == 0); 110 ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); 111 assert(ret == 0); 112 assert(memcmp(buf, expected, sizeof(buf)) == 0); 113 114 printf("Testing partial write of buffer\n"); 115 memset(buf + 4096, 0x02, 1024); 116 memset(expected + 4096, 0x02, 1024); 117 ret = do_write(fd, handle, buf + 4096, 4096, 1024); 118 assert(ret == 0); 119 ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); 120 assert(ret == 0); 121 assert(memcmp(buf, expected, sizeof(buf)) == 0); 122 123 printf("Testing partial read of buffer\n"); 124 ret = do_read(fd, handle, buf, 512, 1024); 125 assert(ret == 0); 126 assert(memcmp(buf, expected + 512, 1024) == 0); 127 128 printf("Testing read of bad buffer handle\n"); 129 ret = do_read(fd, 1234, buf, 0, 1024); 130 assert(ret == -1 && errno == EBADF); 131 132 printf("Testing write of bad buffer handle\n"); 133 ret = do_write(fd, 1234, buf, 0, 1024); 134 assert(ret == -1 && errno == EBADF); 135 136 close(fd); 137 138 return 0; 139 } 140
