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/*
* Copyright 2019 Advanced Micro Devices, Inc.
*
* 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 <drm/drmP.h>
#include "amdgpu.h"
#include "amdgpu_tmz.h"
/**
* amdgpu_is_tmz - validate trust memory zone
*
* @adev: amdgpu_device pointer
*
* Return true if @dev supports trusted memory zones (TMZ), and return false if
* @dev does not support TMZ.
*/
bool amdgpu_is_tmz(struct amdgpu_device *adev)
{
if (!amdgpu_tmz)
return false;
if (adev->asic_type < CHIP_RAVEN || adev->asic_type == CHIP_ARCTURUS) {
dev_warn(adev->dev, "doesn't support trusted memory zones (TMZ)\n");
return false;
}
dev_info(adev->dev, "TMZ feature is enabled\n");
return true;
}
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