Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2009 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@anholt.net> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | /** @file gem_pread_after_blit.c |
| 29 | * |
| 30 | * This is a test of pread's behavior when getting values out of just-drawn-to |
| 31 | * buffers. |
| 32 | * |
| 33 | * The goal is to catch failure in the whole-buffer-flush or |
| 34 | * ranged-buffer-flush paths in the kernel. |
| 35 | */ |
| 36 | |
| 37 | #include <stdlib.h> |
| 38 | #include <stdio.h> |
| 39 | #include <string.h> |
| 40 | #include <assert.h> |
| 41 | #include <fcntl.h> |
| 42 | #include <inttypes.h> |
| 43 | #include <errno.h> |
| 44 | #include <sys/stat.h> |
| 45 | #include <sys/time.h> |
| 46 | #include "drm.h" |
| 47 | #include "i915_drm.h" |
| 48 | #include "drmtest.h" |
| 49 | #include "intel_bufmgr.h" |
| 50 | #include "intel_batchbuffer.h" |
| 51 | #include "intel_gpu_tools.h" |
| 52 | |
| 53 | static drm_intel_bufmgr *bufmgr; |
| 54 | struct intel_batchbuffer *batch; |
| 55 | static const int width = 512, height = 512; |
| 56 | static const int size = 1024 * 1024; |
| 57 | |
| 58 | #define PAGE_SIZE 4096 |
| 59 | |
| 60 | static drm_intel_bo * |
| 61 | create_bo(uint32_t val) |
| 62 | { |
| 63 | drm_intel_bo *bo; |
| 64 | uint32_t *vaddr; |
| 65 | int i; |
| 66 | |
| 67 | bo = drm_intel_bo_alloc(bufmgr, "src bo", size, 4096); |
| 68 | |
| 69 | /* Fill the BO with dwords starting at start_val */ |
| 70 | drm_intel_bo_map(bo, 1); |
| 71 | vaddr = bo->virtual; |
| 72 | |
| 73 | for (i = 0; i < 1024 * 1024 / 4; i++) |
| 74 | vaddr[i] = val++; |
| 75 | |
| 76 | drm_intel_bo_unmap(bo); |
| 77 | |
| 78 | return bo; |
| 79 | } |
| 80 | |
| 81 | static void |
| 82 | verify_large_read(drm_intel_bo *bo, uint32_t val) |
| 83 | { |
| 84 | uint32_t buf[size / 4]; |
| 85 | int i; |
| 86 | |
| 87 | drm_intel_bo_get_subdata(bo, 0, size, buf); |
| 88 | |
| 89 | for (i = 0; i < size / 4; i++) { |
| 90 | if (buf[i] != val) { |
| 91 | fprintf(stderr, |
| 92 | "Unexpected value 0x%08x instead of " |
| 93 | "0x%08x at offset 0x%08x (%p)\n", |
| 94 | buf[i], val, i * 4, buf); |
| 95 | abort(); |
| 96 | } |
| 97 | val++; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | /** This reads at the size that Mesa usees for software fallbacks. */ |
| 102 | static void |
| 103 | verify_small_read(drm_intel_bo *bo, uint32_t val) |
| 104 | { |
| 105 | uint32_t buf[4096 / 4]; |
| 106 | int offset, i; |
| 107 | |
| 108 | for (i = 0; i < 4096 / 4; i++) |
| 109 | buf[i] = 0x00c0ffee; |
| 110 | |
| 111 | for (offset = 0; offset < size; offset += PAGE_SIZE) { |
| 112 | drm_intel_bo_get_subdata(bo, offset, PAGE_SIZE, buf); |
| 113 | |
| 114 | for (i = 0; i < PAGE_SIZE; i += 4) { |
| 115 | if (buf[i / 4] != val) { |
| 116 | fprintf(stderr, |
| 117 | "Unexpected value 0x%08x instead of " |
| 118 | "0x%08x at offset 0x%08x\n", |
| 119 | buf[i / 4], val, i * 4); |
| 120 | abort(); |
| 121 | } |
| 122 | val++; |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | int |
| 128 | main(int argc, char **argv) |
| 129 | { |
| 130 | int fd; |
| 131 | drm_intel_bo *src1, *src2, *bo; |
| 132 | uint32_t start1 = 0; |
| 133 | uint32_t start2 = 1024 * 1024 / 4; |
| 134 | |
| 135 | fd = drm_open_any(); |
Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 136 | |
| 137 | bufmgr = drm_intel_bufmgr_gem_init(fd, 4096); |
| 138 | drm_intel_bufmgr_gem_enable_reuse(bufmgr); |
Chris Wilson | d4d769a | 2010-10-26 10:59:18 +0100 | [diff] [blame^] | 139 | batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd)); |
Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 140 | |
| 141 | src1 = create_bo(start1); |
| 142 | src2 = create_bo(start2); |
| 143 | |
| 144 | bo = drm_intel_bo_alloc(bufmgr, "dst bo", size, 4096); |
| 145 | |
| 146 | /* First, do a full-buffer read after blitting */ |
| 147 | printf("Large read after blit 1\n"); |
Chris Wilson | d4d769a | 2010-10-26 10:59:18 +0100 | [diff] [blame^] | 148 | intel_copy_bo(batch, bo, src1, width, height); |
Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 149 | verify_large_read(bo, start1); |
| 150 | printf("Large read after blit 2\n"); |
Chris Wilson | d4d769a | 2010-10-26 10:59:18 +0100 | [diff] [blame^] | 151 | intel_copy_bo(batch, bo, src2, width, height); |
Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 152 | verify_large_read(bo, start2); |
| 153 | |
| 154 | printf("Small reads after blit 1\n"); |
Chris Wilson | d4d769a | 2010-10-26 10:59:18 +0100 | [diff] [blame^] | 155 | intel_copy_bo(batch, bo, src1, width, height); |
Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 156 | verify_small_read(bo, start1); |
| 157 | printf("Small reads after blit 2\n"); |
Chris Wilson | d4d769a | 2010-10-26 10:59:18 +0100 | [diff] [blame^] | 158 | intel_copy_bo(batch, bo, src2, width, height); |
Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 159 | verify_small_read(bo, start2); |
| 160 | |
| 161 | printf("Large read after blit 3\n"); |
Chris Wilson | d4d769a | 2010-10-26 10:59:18 +0100 | [diff] [blame^] | 162 | intel_copy_bo(batch, bo, src1, width, height); |
Eric Anholt | cd9ba0a | 2009-04-07 16:18:11 -0700 | [diff] [blame] | 163 | verify_large_read(bo, start1); |
| 164 | |
| 165 | drm_intel_bo_unreference(src1); |
| 166 | drm_intel_bo_unreference(src2); |
| 167 | drm_intel_bo_unreference(bo); |
| 168 | |
| 169 | intel_batchbuffer_free(batch); |
| 170 | drm_intel_bufmgr_destroy(bufmgr); |
| 171 | |
| 172 | close(fd); |
| 173 | |
| 174 | return 0; |
| 175 | } |