1f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu/* 2f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * Copyright © 2008 Intel Corporation 3f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * 4f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * Permission is hereby granted, free of charge, to any person obtaining a 5f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * copy of this software and associated documentation files (the "Software"), 6f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * to deal in the Software without restriction, including without limitation 7f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * and/or sell copies of the Software, and to permit persons to whom the 9f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * Software is furnished to do so, subject to the following conditions: 10f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * 11f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * The above copyright notice and this permission notice (including the next 12f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * paragraph) shall be included in all copies or substantial portions of the 13f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * Software. 14f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * 15f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * IN THE SOFTWARE. 22f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * 23f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * Authors: 24f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * Eric Anholt <eric@anholt.net> 25f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * 26f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu */ 27f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 28f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <stdlib.h> 29f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <stdio.h> 30f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <string.h> 31f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <assert.h> 32f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <fcntl.h> 33f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <inttypes.h> 34f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <errno.h> 35f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include <sys/stat.h> 36f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include "drm.h" 37f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#include "i915_drm.h" 38f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 39f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu#define OBJECT_SIZE 16384 40f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 41f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryuint do_read(int fd, int handle, void *buf, int offset, int size) 42f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu{ 43f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu struct drm_i915_gem_pread read; 44f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 45f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu /* Ensure that we don't have any convenient data in buf in case 46f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu * we fail. 47f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu */ 48f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(buf, 0xd0, size); 49f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 50f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(&read, 0, sizeof(read)); 51f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu read.handle = handle; 52f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu read.data_ptr = (uintptr_t)buf; 53f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu read.size = size; 54f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu read.offset = offset; 55f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 56f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu return ioctl(fd, DRM_IOCTL_I915_GEM_PREAD, &read); 57f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu} 58f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 59f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryuint do_write(int fd, int handle, void *buf, int offset, int size) 60f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu{ 61f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu struct drm_i915_gem_pwrite write; 62f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 63f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(&write, 0, sizeof(write)); 64f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu write.handle = handle; 65f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu write.data_ptr = (uintptr_t)buf; 66f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu write.size = size; 67f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu write.offset = offset; 68f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 69f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu return ioctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &write); 70f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu} 71f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 72f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryuint main(int argc, char **argv) 73f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu{ 74f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu int fd; 75f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu struct drm_i915_gem_create create; 76f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu uint8_t expected[OBJECT_SIZE]; 77f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu uint8_t buf[OBJECT_SIZE]; 78f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu int ret; 79f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu int handle; 80f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 81f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu fd = drm_open_matching("8086:*", 0); 82f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu if (fd < 0) { 83f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu fprintf(stderr, "failed to open intel drm device, skipping\n"); 84f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu return 0; 85f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu } 86f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 87f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(&create, 0, sizeof(create)); 88f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu create.size = OBJECT_SIZE; 89f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create); 90f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == 0); 91f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu handle = create.handle; 92f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 93f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("Testing contents of newly created object.\n"); 94f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); 95f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == 0); 96f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(&expected, 0, sizeof(expected)); 97f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(memcmp(expected, buf, sizeof(expected)) == 0); 98f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 99f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("Testing read beyond end of buffer.\n"); 100f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_read(fd, handle, buf, OBJECT_SIZE / 2, OBJECT_SIZE); 101f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("%d %d\n", ret, errno); 102f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == -1 && errno == EINVAL); 103f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 104f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("Testing full write of buffer\n"); 105f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(buf, 0, sizeof(buf)); 106f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(buf + 1024, 0x01, 1024); 107f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(expected + 1024, 0x01, 1024); 108f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_write(fd, handle, buf, 0, OBJECT_SIZE); 109f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == 0); 110f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); 111f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == 0); 112f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(memcmp(buf, expected, sizeof(buf)) == 0); 113f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 114f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("Testing partial write of buffer\n"); 115f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(buf + 4096, 0x02, 1024); 116f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu memset(expected + 4096, 0x02, 1024); 117f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_write(fd, handle, buf + 4096, 4096, 1024); 118f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == 0); 119f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); 120f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == 0); 121f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(memcmp(buf, expected, sizeof(buf)) == 0); 122f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 123f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("Testing partial read of buffer\n"); 124f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_read(fd, handle, buf, 512, 1024); 125f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == 0); 126f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(memcmp(buf, expected + 512, 1024) == 0); 127f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 128f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("Testing read of bad buffer handle\n"); 129f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_read(fd, 1234, buf, 0, 1024); 130f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == -1 && errno == EBADF); 131f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 132f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu printf("Testing write of bad buffer handle\n"); 133f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu ret = do_write(fd, 1234, buf, 0, 1024); 134f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu assert(ret == -1 && errno == EBADF); 135f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 136f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu close(fd); 137f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu 138f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu return 0; 139f0352d4fde4ec179ffe04c3f834199d3bad36087Ho-Eun Ryu} 140