/**************************************************************************/ /*!
@File
@Title          Header for secure buffer PMR factory
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@Description    Part of the memory management. This module is responsible for
                implementing the function callbacks importing secure buffer
                allocations.
@License        Dual MIT/GPLv2

The contents of this file are subject to the MIT license as set out below.

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*/ /***************************************************************************/

#ifndef _PHYSMEM_TDSECBUF_H_
#define _PHYSMEM_TDSECBUF_H_

#include "img_types.h"
#include "pvrsrv_error.h"
#include "pvrsrv_memallocflags.h"
#include "pmr.h"

/*
 * PhysmemNewTDSecureBufPMR
 *
 * This function is used as part of the facility to provide secure buffer
 * memory. A default implementation is provided but it can be replaced by
 * the SoC implementor if necessary.
 *
 * Calling this function will create a PMR for a memory allocation made
 * in "secure buffer memory". It will only be writable by a trusted
 * entity and when the feature is enabled on the SoC the GPU will only
 * be able to perform operations permitted by security rules.
 */

PVRSRV_ERROR PhysmemNewTDSecureBufPMR(CONNECTION_DATA *psConnection,
                                      PVRSRV_DEVICE_NODE *psDevNode,
                                      IMG_DEVMEM_SIZE_T uiSize,
                                      PMR_LOG2ALIGN_T uiLog2Align,
                                      PVRSRV_MEMALLOCFLAGS_T uiFlags,
                                      PMR **ppsPMRPtr,
                                      IMG_UINT64 *pui64SecBufHandle);

PVRSRV_ERROR PhysmemImportSecBuf(CONNECTION_DATA *psConnection,
                                 PVRSRV_DEVICE_NODE *psDevNode,
                                 IMG_DEVMEM_SIZE_T uiSize,
                                 IMG_UINT32 ui32Log2Align,
                                 PVRSRV_MEMALLOCFLAGS_T uiFlags,
                                 PMR **ppsPMRPtr,
                                 IMG_UINT64 *pui64SecBufHandle);

#endif /* _PHYSMEM_TDSECBUF_H_ */