| /* |
| * Copyright © 2011 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: |
| * Daniel Vetter <daniel.vetter@ffwll.ch> |
| * |
| */ |
| |
| /* |
| * Testcase: Test the CS prefetch behaviour on batches |
| * |
| * Historically the batch prefetcher doesn't check whether it's crossing page |
| * boundaries and likes to throw up when it gets a pagefault in return for his |
| * over-eager behaviour. Check for this. |
| * |
| * This test for a bug where we've failed to plug a scratch pte entry into the |
| * very last gtt pte. |
| */ |
| #include "igt.h" |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include <sys/stat.h> |
| #include <sys/time.h> |
| |
| #include <drm.h> |
| |
| #include "intel_bufmgr.h" |
| |
| IGT_TEST_DESCRIPTION("Test the CS prefetch behaviour on batches."); |
| |
| static drm_intel_bufmgr *bufmgr; |
| struct intel_batchbuffer *batch; |
| |
| static void exec(int fd, uint32_t handle) |
| { |
| struct drm_i915_gem_execbuffer2 execbuf; |
| struct drm_i915_gem_exec_object2 gem_exec[1]; |
| |
| memset(gem_exec, 0, sizeof(gem_exec)); |
| gem_exec[0].handle = handle; |
| |
| memset(&execbuf, 0, sizeof(execbuf)); |
| execbuf.buffers_ptr = (uintptr_t)gem_exec; |
| execbuf.buffer_count = 1; |
| execbuf.batch_start_offset = 0; |
| execbuf.batch_len = 4096; |
| |
| gem_execbuf(fd, &execbuf); |
| gem_sync(fd, handle); |
| } |
| |
| igt_simple_main |
| { |
| uint32_t batch_end[4] = {MI_BATCH_BUFFER_END, 0, 0, 0}; |
| int fd, i, ret; |
| uint64_t aper_size; |
| int count; |
| drm_intel_bo *sample_batch_bo; |
| |
| igt_skip_on_simulation(); |
| |
| fd = drm_open_any(); |
| |
| bufmgr = drm_intel_bufmgr_gem_init(fd, 4096); |
| igt_assert(bufmgr); |
| |
| drm_intel_bufmgr_gem_enable_reuse(bufmgr); |
| |
| aper_size = gem_aperture_size(fd); |
| |
| /* presume a big per-bo overhead */ |
| igt_skip_on_f(intel_get_total_ram_mb() < (aper_size / (1024*1024)) * 3 / 2, |
| "not enough mem to run test\n"); |
| |
| count = aper_size / 4096; |
| |
| batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd)); |
| igt_assert(batch); |
| |
| sample_batch_bo = drm_intel_bo_alloc(bufmgr, "", 4096, 4096); |
| igt_assert(sample_batch_bo); |
| ret = drm_intel_bo_subdata(sample_batch_bo, 4096-sizeof(batch_end), |
| sizeof(batch_end), batch_end); |
| igt_assert(ret == 0); |
| |
| /* fill the entire gart with batches and run them */ |
| for (i = 0; i < count; i++) { |
| drm_intel_bo *batch_bo; |
| |
| batch_bo = drm_intel_bo_alloc(bufmgr, "", 4096, 4096); |
| igt_assert(batch_bo); |
| |
| /* copy the sample batch with the gpu to the new one, so that we |
| * also test the unmappable part of the gtt. */ |
| BLIT_COPY_BATCH_START(0); |
| OUT_BATCH((3 << 24) | /* 32 bits */ |
| (0xcc << 16) | /* copy ROP */ |
| 4096); |
| OUT_BATCH(0); /* dst y1,x1 */ |
| OUT_BATCH((1 << 16) | 1024); |
| OUT_RELOC_FENCED(batch_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0); |
| OUT_BATCH((0 << 16) | 0); /* src x1, y1 */ |
| OUT_BATCH(4096); |
| OUT_RELOC_FENCED(sample_batch_bo, I915_GEM_DOMAIN_RENDER, 0, 0); |
| ADVANCE_BATCH(); |
| |
| intel_batchbuffer_flush(batch); |
| if (i % 100 == 0) |
| gem_sync(fd, batch_bo->handle); |
| |
| drm_intel_bo_disable_reuse(batch_bo); |
| |
| /* launch the newly created batch */ |
| exec(fd, batch_bo->handle); |
| |
| // leak buffers |
| //drm_intel_bo_unreference(batch_bo); |
| igt_progress("gem_cs_prefetch: ", i, count); |
| } |
| |
| igt_info("Test suceeded, cleanup up - this might take a while.\n"); |
| drm_intel_bufmgr_destroy(bufmgr); |
| |
| close(fd); |
| } |