/* * Copyright © 2009 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * * Authors: * Eric Anholt * */ /** @file gem_pread_after_blit.c * * This is a test of pread's behavior when getting values out of just-drawn-to * buffers. * * The goal is to catch failure in the whole-buffer-flush or * ranged-buffer-flush paths in the kernel. */ #include #include #include #include #include #include #include #include #include "drm.h" #include "i915_drm.h" #include "drmtest.h" #include "intel_bufmgr.h" #include "intel_batchbuffer.h" #include "intel_gpu_tools.h" static drm_intel_bufmgr *bufmgr; struct intel_batchbuffer *batch; static const int width = 512, height = 512; static const int size = 1024 * 1024; #define PAGE_SIZE 4096 static drm_intel_bo * create_bo(uint32_t val) { drm_intel_bo *bo; uint32_t *vaddr; int i; bo = drm_intel_bo_alloc(bufmgr, "src bo", size, 4096); /* Fill the BO with dwords starting at start_val */ drm_intel_bo_map(bo, 1); vaddr = bo->virtual; for (i = 0; i < 1024 * 1024 / 4; i++) vaddr[i] = val++; drm_intel_bo_unmap(bo); return bo; } static void verify_large_read(drm_intel_bo *bo, uint32_t val) { uint32_t buf[size / 4]; int i; drm_intel_bo_get_subdata(bo, 0, size, buf); for (i = 0; i < size / 4; i++) { if (buf[i] != val) { fprintf(stderr, "Unexpected value 0x%08x instead of " "0x%08x at offset 0x%08x (%p)\n", buf[i], val, i * 4, buf); abort(); } val++; } } /** This reads at the size that Mesa usees for software fallbacks. */ static void verify_small_read(drm_intel_bo *bo, uint32_t val) { uint32_t buf[4096 / 4]; int offset, i; for (i = 0; i < 4096 / 4; i++) buf[i] = 0x00c0ffee; for (offset = 0; offset < size; offset += PAGE_SIZE) { drm_intel_bo_get_subdata(bo, offset, PAGE_SIZE, buf); for (i = 0; i < PAGE_SIZE; i += 4) { if (buf[i / 4] != val) { fprintf(stderr, "Unexpected value 0x%08x instead of " "0x%08x at offset 0x%08x\n", buf[i / 4], val, i * 4); abort(); } val++; } } } static void do_test(int fd, int cache_level, drm_intel_bo *src[2], const uint32_t start[2], drm_intel_bo *tmp[2], int loop) { if (cache_level != -1) { gem_set_caching(fd, tmp[0]->handle, cache_level); gem_set_caching(fd, tmp[1]->handle, cache_level); } printf("meh"); do { /* First, do a full-buffer read after blitting */ intel_copy_bo(batch, tmp[0], src[0], width, height); verify_large_read(tmp[0], start[0]); intel_copy_bo(batch, tmp[0], src[1], width, height); verify_large_read(tmp[0], start[1]); intel_copy_bo(batch, tmp[0], src[0], width, height); verify_small_read(tmp[0], start[0]); intel_copy_bo(batch, tmp[0], src[1], width, height); verify_small_read(tmp[0], start[1]); intel_copy_bo(batch, tmp[0], src[0], width, height); verify_large_read(tmp[0], start[0]); intel_copy_bo(batch, tmp[0], src[0], width, height); intel_copy_bo(batch, tmp[1], src[1], width, height); verify_large_read(tmp[0], start[0]); verify_large_read(tmp[1], start[1]); intel_copy_bo(batch, tmp[0], src[0], width, height); intel_copy_bo(batch, tmp[1], src[1], width, height); verify_large_read(tmp[1], start[1]); verify_large_read(tmp[0], start[0]); intel_copy_bo(batch, tmp[1], src[0], width, height); intel_copy_bo(batch, tmp[0], src[1], width, height); verify_large_read(tmp[0], start[1]); verify_large_read(tmp[1], start[0]); } while (--loop); } drm_intel_bo *src[2], *dst[2]; int fd; int main(int argc, char **argv) { const uint32_t start[2] = {0, 1024 * 1024 / 4}; igt_subtest_init(argc, argv); igt_skip_on_simulation(); igt_fixture { fd = drm_open_any(); bufmgr = drm_intel_bufmgr_gem_init(fd, 4096); drm_intel_bufmgr_gem_enable_reuse(bufmgr); batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd)); src[0] = create_bo(start[0]); src[1] = create_bo(start[1]); dst[0] = drm_intel_bo_alloc(bufmgr, "dst bo", size, 4096); dst[1] = drm_intel_bo_alloc(bufmgr, "dst bo", size, 4096); } igt_subtest("normal") do_test(fd, -1, src, start, dst, 1); igt_subtest("interruptible") { igt_fork_signal_helper(); do_test(fd, -1, src, start, dst, 100); igt_stop_signal_helper(); } igt_subtest("normal-uncached") do_test(fd, 0, src, start, dst, 1); igt_subtest("interruptible-uncached") { igt_fork_signal_helper(); do_test(fd, 0, src, start, dst, 100); igt_stop_signal_helper(); } igt_subtest("normal-snoop") do_test(fd, 1, src, start, dst, 1); igt_subtest("interruptible-snoop") { igt_fork_signal_helper(); do_test(fd, 1, src, start, dst, 100); igt_stop_signal_helper(); } igt_subtest("normal-display") do_test(fd, 2, src, start, dst, 1); igt_subtest("interruptible-display") { igt_fork_signal_helper(); do_test(fd, 2, src, start, dst, 100); igt_stop_signal_helper(); } igt_fixture { drm_intel_bo_unreference(src[0]); drm_intel_bo_unreference(src[1]); drm_intel_bo_unreference(dst[0]); drm_intel_bo_unreference(dst[1]); intel_batchbuffer_free(batch); drm_intel_bufmgr_destroy(bufmgr); } close(fd); igt_exit(); }