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igt: Add gem_exec_alignment

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Simple test to see whether the kernel obey's the user's request
alignemnt.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-06-22 15:48:54 +01:00
parent eb7d60e430
commit 0e528af623
3 changed files with 89 additions and 0 deletions
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1
tests/.gitignore vendored
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@ -39,6 +39,7 @@ gem_dummy_reloc_loop
gem_eio
gem_evict_alignment
gem_evict_everything
gem_exec_alignment
gem_exec_bad_domains
gem_exec_big
gem_exec_blt

1
tests/Makefile.sources
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@ -23,6 +23,7 @@ TESTS_progs_M = \
gem_eio \
gem_evict_alignment \
gem_evict_everything \
gem_exec_alignment \
gem_exec_bad_domains \
gem_exec_faulting_reloc \
gem_exec_nop \

87
tests/gem_exec_alignment.c Normal file
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@ -0,0 +1,87 @@
/*
* Copyright © 2015 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:
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
/* Exercises the basic execbuffer using object alignments */
#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 "ioctl_wrappers.h"
#include "igt_debugfs.h"
#include "drmtest.h"
IGT_TEST_DESCRIPTION("Exercises the basic execbuffer using object alignments");
static int __gem_execbuf(int fd, struct drm_i915_gem_execbuffer2 *eb)
{
return drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, eb);
}
igt_simple_main
{
struct drm_i915_gem_exec_object2 execobj;
struct drm_i915_gem_execbuffer2 execbuf;
uint32_t batch = MI_BATCH_BUFFER_END;
int non_pot;
int fd;
igt_skip_on_simulation();
fd = drm_open_any();
memset(&execobj, 0, sizeof(execobj));
memset(&execbuf, 0, sizeof(execbuf));
execobj.handle = gem_create(fd, 4096);
gem_write(fd, execobj.handle, 0, &batch, sizeof(batch));
execbuf.buffers_ptr = (uintptr_t)&execobj;
execbuf.buffer_count = 1;
gem_execbuf(fd, &execbuf);
execobj.alignment = 3*4096;
non_pot = __gem_execbuf(fd, &execbuf) == 0;
igt_debug("execbuffer() accepts non-power-of-two alignment? %s\n",
non_pot ? "yes" : "no");
for (execobj.alignment = 4096;
execobj.alignment <= 64<<20;
execobj.alignment += 4096) {
if (!non_pot && execobj.alignment & -execobj.alignment)
continue;
gem_execbuf(fd, &execbuf);
igt_assert_eq(execobj.offset % execobj.alignment, 0);
}
}