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100 lines
4.0 KiB
C
100 lines
4.0 KiB
C
/*************************************************************************/ /*!
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@File
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@Title Kernel/User mode general purpose shared memory.
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@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
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@Description General purpose memory shared between kernel driver and user
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mode.
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@License Dual MIT/GPLv2
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The contents of this file are subject to the MIT license as set out below.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 2 ("GPL") in which case the provisions
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of GPL are applicable instead of those above.
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If you wish to allow use of your version of this file only under the terms of
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GPL, and not to allow others to use your version of this file under the terms
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of the MIT license, indicate your decision by deleting the provisions above
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and replace them with the notice and other provisions required by GPL as set
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out in the file called "GPL-COPYING" included in this distribution. If you do
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not delete the provisions above, a recipient may use your version of this file
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under the terms of either the MIT license or GPL.
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This License is also included in this distribution in the file called
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"MIT-COPYING".
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EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
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PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/ /**************************************************************************/
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#ifndef INFO_PAGE_KM_H
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#define INFO_PAGE_KM_H
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#include "pvrsrv_error.h"
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#include "pmr.h"
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#include "pvrsrv.h"
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#include "info_page_defs.h"
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/**
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* @Function InfoPageCreate
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* @Description Allocates resources for global information page.
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* @Input psData pointer to PVRSRV data
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* @Return PVRSRV_OK on success and other PVRSRV_ERROR code on error.
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*/
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PVRSRV_ERROR InfoPageCreate(PVRSRV_DATA *psData);
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/**
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* @Function InfoPageDestroy
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* @Description Frees all of the resource of global information page.
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* @Input psData pointer to PVRSRV data
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* @Return PVRSRV_OK on success and other PVRSRV_ERROR code on error.
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*/
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void InfoPageDestroy(PVRSRV_DATA *psData);
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/**
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* @Function PVRSRVAcquireInfoPageKM()
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* @Description This interface is used for obtaining the global information page
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* which acts as a general purpose shared memory between KM and UM.
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* The use of this information page outside of services is _not_
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* recommended.
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* @Output ppsPMR handle to exported PMR
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* @Return
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*/
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PVRSRV_ERROR PVRSRVAcquireInfoPageKM(PMR **ppsPMR);
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/**
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* @Function PVRSRVReleaseInfoPageKM()
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* @Description This function matches PVRSRVAcquireInfoPageKM().
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* @Input psPMR handle to exported PMR
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* @Return PVRSRV_OK on success and other PVRSRV_ERROR code on error.
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*/
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PVRSRV_ERROR PVRSRVReleaseInfoPageKM(PMR *psPMR);
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/**
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* @Function GetInfoPageDebugFlagsKM()
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* @Description Return info page debug flags
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* @Return info page debug flags
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*/
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static INLINE IMG_UINT32 GetInfoPageDebugFlagsKM(void)
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{
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return (PVRSRVGetPVRSRVData())->pui32InfoPage[DEBUG_FEATURE_FLAGS];
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}
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#endif /* INFO_PAGE_KM_H */
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