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/**********************************************************************
*
* Copyright (C) Imagination Technologies Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful but, except
* as otherwise stated in writing, without any warranty; without even the
* implied warranty of merchantability or fitness for a particular purpose.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* Imagination Technologies Ltd. <gpl-support@imgtec.com>
* Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK
*
*****************************************************************************/
#include "ion.h"
#include "services.h"
#include "servicesint.h"
#include "mutex.h"
#include "lock.h"
#include "mm.h"
#include "handle.h"
#include "perproc.h"
#include "env_perproc.h"
#include "private_data.h"
#include "pvr_debug.h"
#include <linux/module.h>
#include <linux/file.h>
#include <linux/fs.h>
extern struct ion_client *gpsIONClient;
void PVRSRVExportFDToIONHandles(int fd, struct ion_client **client,
struct ion_handle *handles[2])
{
PVRSRV_FILE_PRIVATE_DATA *psPrivateData;
PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo;
LinuxMemArea *psLinuxMemArea;
PVRSRV_ERROR eError;
struct file *psFile;
/* Take the bridge mutex so the handle won't be freed underneath us */
LinuxLockMutex(&gPVRSRVLock);
psFile = fget(fd);
if(!psFile)
goto err_unlock;
psPrivateData = psFile->private_data;
if(!psPrivateData)
{
PVR_DPF((PVR_DBG_ERROR, "%s: struct file* has no private_data; "
"invalid export handle", __func__));
goto err_fput;
}
eError = PVRSRVLookupHandle(KERNEL_HANDLE_BASE,
(IMG_PVOID *)&psKernelMemInfo,
psPrivateData->hKernelMemInfo,
PVRSRV_HANDLE_TYPE_MEM_INFO);
if(eError != PVRSRV_OK)
{
PVR_DPF((PVR_DBG_ERROR, "%s: Failed to look up MEM_INFO handle",
__func__));
goto err_fput;
}
psLinuxMemArea = (LinuxMemArea *)psKernelMemInfo->sMemBlk.hOSMemHandle;
BUG_ON(psLinuxMemArea == IMG_NULL);
if(psLinuxMemArea->eAreaType != LINUX_MEM_AREA_ION)
{
PVR_DPF((PVR_DBG_ERROR, "%s: Valid handle, but not an ION buffer",
__func__));
goto err_fput;
}
handles[0] = psLinuxMemArea->uData.sIONTilerAlloc.psIONHandle[0];
handles[1] = psLinuxMemArea->uData.sIONTilerAlloc.psIONHandle[1];
if(client)
*client = gpsIONClient;
err_fput:
fput(psFile);
err_unlock:
/* Allow PVRSRV clients to communicate with srvkm again */
LinuxUnLockMutex(&gPVRSRVLock);
}
struct ion_handle *
PVRSRVExportFDToIONHandle(int fd, struct ion_client **client)
{
struct ion_handle *psHandles[2] = { IMG_NULL, IMG_NULL };
PVRSRVExportFDToIONHandles(fd, client, psHandles);
return psHandles[0];
}
EXPORT_SYMBOL(PVRSRVExportFDToIONHandles);
EXPORT_SYMBOL(PVRSRVExportFDToIONHandle);
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