1 /* 2 * Copyright © 2012 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 * Daniel Vetter <daniel.vetter@ffwll.ch> 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 IGT_TEST_DESCRIPTION("Check set_tiling vs gtt mmap coherency."); 41 42 #define OBJECT_SIZE (1024*1024) 43 #define TEST_STRIDE (1024*4) 44 45 /** 46 * Testcase: Check set_tiling vs gtt mmap coherency 47 */ 48 49 igt_simple_main 50 { 51 int fd; 52 uint32_t *ptr; 53 uint32_t data[OBJECT_SIZE/4]; 54 int i; 55 uint32_t handle; 56 bool tiling_changed; 57 int tile_height; 58 59 igt_skip_on_simulation(); 60 61 fd = drm_open_driver(DRIVER_INTEL); 62 63 if (IS_GEN2(intel_get_drm_devid(fd))) 64 tile_height = 16; 65 else 66 tile_height = 8; 67 68 handle = gem_create(fd, OBJECT_SIZE); 69 ptr = gem_mmap__gtt(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE); 70 71 /* gtt coherency is done with set_domain in libdrm, don't break that */ 72 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); 73 for (i = 0; i < OBJECT_SIZE/4; i++) 74 ptr[i] = data[i] = i; 75 76 gem_set_tiling(fd, handle, I915_TILING_X, TEST_STRIDE); 77 78 igt_info("testing untiled->tiled\n"); 79 tiling_changed = false; 80 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0); 81 /* Too lazy to check for the correct tiling, and impossible anyway on 82 * bit17 swizzling machines. */ 83 for (i = 0; i < OBJECT_SIZE/4; i++) 84 if (ptr[i] != data[i]) 85 tiling_changed = true; 86 igt_assert(tiling_changed); 87 88 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); 89 for (i = 0; i < OBJECT_SIZE/4; i++) 90 ptr[i] = data[i] = i; 91 92 gem_set_tiling(fd, handle, I915_TILING_X, TEST_STRIDE*2); 93 94 igt_info("testing tiled->tiled\n"); 95 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0); 96 for (i = 0; i < OBJECT_SIZE/4; i++) { 97 int tile_row = i / (TEST_STRIDE * tile_height / 4); 98 int row = i / (TEST_STRIDE * 2 / 4); 99 int half = i & (TEST_STRIDE / 4); 100 int ofs = i % (TEST_STRIDE / 4); 101 int data_i = (tile_row/2)*(TEST_STRIDE * tile_height / 4) 102 + row*TEST_STRIDE/4 103 + half*tile_height + ofs; 104 uint32_t val = data[data_i]; 105 106 igt_assert_f(ptr[i] == val, 107 "mismatch at %i, row=%i, half=%i, ofs=%i, " 108 "read: 0x%08x, expected: 0x%08x\n", 109 i, row, half, ofs, 110 ptr[i], val); 111 112 } 113 114 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); 115 for (i = 0; i < OBJECT_SIZE/4; i++) 116 ptr[i] = data[i] = i; 117 118 gem_set_tiling(fd, handle, I915_TILING_NONE, 0); 119 igt_info("testing tiled->untiled\n"); 120 tiling_changed = false; 121 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0); 122 /* Too lazy to check for the correct tiling, and impossible anyway on 123 * bit17 swizzling machines. */ 124 for (i = 0; i < OBJECT_SIZE/4; i++) 125 if (ptr[i] != data[i]) 126 tiling_changed = true; 127 igt_assert(tiling_changed); 128 129 munmap(ptr, OBJECT_SIZE); 130 131 close(fd); 132 } 133