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/*
* 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: Unreferencing of active buffers
*
* Execs buffers and immediately unreferences them, hence the kernel active list
* will be the last one to hold a reference on them. Usually libdrm bo caching
* prevents that by keeping another reference.
*/
#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 unreferencing of active buffers.");
static drm_intel_bufmgr *bufmgr;
struct intel_batchbuffer *batch;
static drm_intel_bo *load_bo;
igt_simple_main
{
int fd, i;
igt_skip_on_simulation();
fd = drm_open_driver(DRIVER_INTEL);
bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
igt_assert(bufmgr);
/* don't enable buffer reuse!! */
//drm_intel_bufmgr_gem_enable_reuse(bufmgr);
batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
igt_assert(batch);
/* put some load onto the gpu to keep the light buffers active for long
* enough */
for (i = 0; i < 1000; i++) {
load_bo = drm_intel_bo_alloc(bufmgr, "target bo", 1024*4096, 4096);
igt_assert(load_bo);
BLIT_COPY_BATCH_START(0);
OUT_BATCH((3 << 24) | /* 32 bits */
(0xcc << 16) | /* copy ROP */
4096);
OUT_BATCH(0); /* dst x1,y1 */
OUT_BATCH((1024 << 16) | 512);
OUT_RELOC_FENCED(load_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
OUT_BATCH((0 << 16) | 512); /* src x1, y1 */
OUT_BATCH(4096);
OUT_RELOC_FENCED(load_bo, I915_GEM_DOMAIN_RENDER, 0, 0);
ADVANCE_BATCH();
intel_batchbuffer_flush(batch);
drm_intel_bo_disable_reuse(load_bo);
drm_intel_bo_unreference(load_bo);
}
drm_intel_bufmgr_destroy(bufmgr);
close(fd);
}
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