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/*
* Copyright © 2016 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.
*/
#include <signal.h>
#include <dirent.h>
#include <unistd.h>
#include <fcntl.h>
#include "igt_gvt.h"
#include "igt_sysfs.h"
#include "igt_kmod.h"
#include "drmtest.h"
/**
* SECTION:igt_gvt
* @short_description: Graphics virtualization technology library
* @title: GVT
* @include: igt_gvt.h
*/
static bool is_gvt_enabled(void)
{
bool enabled = false;
int dir, fd;
fd = __drm_open_driver(DRIVER_INTEL);
dir = igt_sysfs_open_parameters(fd);
if (dir < 0)
return false;
enabled = igt_sysfs_get_boolean(dir, "enable_gvt");
close(dir);
close(fd);
return enabled;
}
bool igt_gvt_load_module(void)
{
if (is_gvt_enabled())
return true;
if (igt_i915_driver_unload())
return false;
if (igt_i915_driver_load("enable_gvt=1"))
return false;
return is_gvt_enabled();
}
void igt_gvt_unload_module(void)
{
if (!is_gvt_enabled())
return;
igt_i915_driver_unload();
igt_i915_driver_load(NULL);
igt_assert(!is_gvt_enabled());
}
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