/*************************************************************************/ /*!
@File
@Title          Kernel/User mode general purpose shared memory.
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@Description    General purpose memory shared between kernel driver and user
                mode.
@License        Dual MIT/GPLv2

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

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
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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.

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the GNU General Public License Version 2 ("GPL") in which case the provisions
of GPL are applicable instead of those above.

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of the MIT license, indicate your decision by deleting the provisions above
and replace them with the notice and other provisions required by GPL as set
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not delete the provisions above, a recipient may use your version of this file
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This License is also included in this distribution in the file called
"MIT-COPYING".

EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
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*/ /**************************************************************************/

#ifndef _INFO_PAGE_KM_H_
#define _INFO_PAGE_KM_H_

#include "pvrsrv_error.h"

#include "pmr.h"
#include "pvrsrv.h"

/**
 * @Function InfoPageCreate
 * @Description Allocates resources for global information page.
 * @Input psData pointer to PVRSRV data
 * @Return PVRSRV_OK on success and other PVRSRV_ERROR code on error.
 */
PVRSRV_ERROR InfoPageCreate(PVRSRV_DATA *psData);

/**
 * @Function InfoPageDestroy
 * @Description Frees all of the resource of global information page.
 * @Input psData pointer to PVRSRV data
 * @Return PVRSRV_OK on success and other PVRSRV_ERROR code on error.
 */
void InfoPageDestroy(PVRSRV_DATA *psData);

/**
 * @Function PVRSRVAcquireInfoPageKM()
 * @Description This interface is used for obtaining the global information page
 *              which acts as a general purpose shared memory between KM and UM.
 *              The use of this information page outside of services is _not_
 *              recommended.
 * @Output ppsPMR handle to exported PMR
 * @Return
 */
PVRSRV_ERROR PVRSRVAcquireInfoPageKM(PMR **ppsPMR);

/**
 * @Function PVRSRVReleaseInfoPageKM()
 * @Description This function matches PVRSRVAcquireInfoPageKM().
 * @Input psPMR handle to exported PMR
 * @Return PVRSRV_OK on success and other PVRSRV_ERROR code on error.
 */
PVRSRV_ERROR PVRSRVReleaseInfoPageKM(PMR *psPMR);

/**
 * @Function GetInfoPageDebugFlagsKM()
 * @Description Return info page debug flags
 * @Return info page debug flags
 */
static INLINE IMG_UINT32 GetInfoPageDebugFlagsKM(void)
{
	return (PVRSRVGetPVRSRVData())->pui32InfoPage[DEBUG_FEATURE_FLAGS];
}

#endif /* _INFO_PAGE_KM_H_ */