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 pwrite coherency."); 41 42 #define OBJECT_SIZE (1024*1024) 43 #define TEST_STRIDE (1024*4) 44 45 /** 46 * Testcase: Check set_tiling vs pwrite 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 57 igt_skip_on_simulation(); 58 59 fd = drm_open_driver(DRIVER_INTEL); 60 61 for (i = 0; i < OBJECT_SIZE/4; i++) 62 data[i] = i; 63 64 handle = gem_create(fd, OBJECT_SIZE); 65 ptr = gem_mmap__gtt(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE); 66 67 gem_set_tiling(fd, handle, I915_TILING_X, TEST_STRIDE); 68 69 /* touch it */ 70 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); 71 *ptr = 0xdeadbeef; 72 73 igt_info("testing pwrite on tiled buffer\n"); 74 gem_write(fd, handle, 0, data, OBJECT_SIZE); 75 memset(data, 0, OBJECT_SIZE); 76 gem_read(fd, handle, 0, data, OBJECT_SIZE); 77 for (i = 0; i < OBJECT_SIZE/4; i++) 78 igt_assert_eq_u32(data[i], i); 79 80 /* touch it before changing the tiling, so that the fence sticks around */ 81 gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); 82 *ptr = 0xdeadbeef; 83 84 gem_set_tiling(fd, handle, I915_TILING_NONE, 0); 85 86 igt_info("testing pwrite on untiled, but still fenced buffer\n"); 87 gem_write(fd, handle, 0, data, OBJECT_SIZE); 88 memset(data, 0, OBJECT_SIZE); 89 gem_read(fd, handle, 0, data, OBJECT_SIZE); 90 for (i = 0; i < OBJECT_SIZE/4; i++) 91 igt_assert_eq_u32(data[i], i); 92 93 munmap(ptr, OBJECT_SIZE); 94 95 close(fd); 96 } 97