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85 lines
2.1 KiB
85 lines
2.1 KiB
4 months ago
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/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <signal.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "igt_gvt.h"
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#include "igt_sysfs.h"
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#include "igt_kmod.h"
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#include "drmtest.h"
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/**
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* SECTION:igt_gvt
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* @short_description: Graphics virtualization technology library
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* @title: GVT
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* @include: igt_gvt.h
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*/
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static bool is_gvt_enabled(void)
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{
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bool enabled = false;
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int dir, fd;
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fd = __drm_open_driver(DRIVER_INTEL);
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dir = igt_sysfs_open_parameters(fd);
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if (dir < 0)
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return false;
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enabled = igt_sysfs_get_boolean(dir, "enable_gvt");
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close(dir);
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close(fd);
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return enabled;
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}
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bool igt_gvt_load_module(void)
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{
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if (is_gvt_enabled())
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return true;
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if (igt_i915_driver_unload())
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return false;
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if (igt_i915_driver_load("enable_gvt=1"))
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return false;
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return is_gvt_enabled();
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}
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void igt_gvt_unload_module(void)
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{
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if (!is_gvt_enabled())
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return;
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igt_i915_driver_unload();
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igt_i915_driver_load(NULL);
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igt_assert(!is_gvt_enabled());
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}
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