diff --git a/sgx_km/eurasia_km/services4/srvkm/env/linux/dmabuf.h b/sgx_km/eurasia_km/services4/srvkm/env/linux/dmabuf.h
--- /dev/null
@@ -0,0 +1,98 @@
+/*************************************************************************/ /*!
+@Title DmaBuf driver inter-operability code.
+@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
+@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
+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.
+
+Alternatively, the contents of this file may be used under the terms of
+the GNU General Public License Version 2 ("GPL") in which case the provisions
+of GPL are applicable instead of those above.
+
+If you wish to allow use of your version of this file only under the terms of
+GPL, and not to allow others to use your version of this file under the terms
+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
+out in the file called "GPL-COPYING" included in this distribution. If you do
+not delete the provisions above, a recipient may use your version of this file
+under the terms of either the MIT license or GPL.
+
+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
+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; AND (B) IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS 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.
+*/ /**************************************************************************/
+
+#ifndef __IMG_LINUX_DMABUF_H__
+#define __IMG_LINUX_DMABUF_H__
+
+#if defined(SUPPORT_DMABUF)
+
+#include <linux/version.h>
+
+#include "img_types.h"
+#include "servicesext.h"
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,17,0))
+#include <linux/reservation.h>
+#include "pvr_bridge.h"
+
+struct dmabuf_resvinfo
+{
+ struct reservation_object *resv;
+};
+
+static inline void *DmaBufGetReservationObject(IMG_HANDLE hSync)
+{
+ struct dmabuf_resvinfo *info;
+
+ info = (struct dmabuf_resvinfo *)hSync;
+
+ return info->resv;
+}
+#else
+static inline void *DmaBufGetReservationObject(IMG_HANDLE hSync)
+{
+ (void) hSync;
+
+ return (void *)0;
+}
+#endif
+
+PVRSRV_ERROR DmaBufInit(IMG_VOID);
+
+IMG_VOID DmaBufDeinit(IMG_VOID);
+
+PVRSRV_ERROR DmaBufImportAndAcquirePhysAddr(const IMG_INT32 i32DmaBufFD,
+ const IMG_SIZE_T uiDmaBufOffset,
+ const IMG_SIZE_T uiSize,
+ IMG_UINT32 *pui32PageCount,
+ IMG_SYS_PHYADDR **ppsSysPhysAddr,
+ IMG_SIZE_T *puiMemInfoOffset,
+ IMG_PVOID *ppvKernAddr,
+ IMG_HANDLE *phImport,
+ IMG_HANDLE *phUnique);
+
+IMG_VOID DmaBufUnimportAndReleasePhysAddr(IMG_HANDLE hImport);
+
+IMG_HANDLE DmaBufGetNativeSyncHandle(IMG_HANDLE hImport);
+void DmaBufFreeNativeSyncHandle(IMG_HANDLE hSync);
+#endif /* defined(SUPPORT_DMABUF) */
+
+#endif /* __IMG_LINUX_DMABUF_H__ */