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diff --git a/arch/arm/mach-tegra/nvrm/core/ap15/ap15rm_xpc_hw_private.h b/arch/arm/mach-tegra/nvrm/core/ap15/ap15rm_xpc_hw_private.h
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+++ b/arch/arm/mach-tegra/nvrm/core/ap15/ap15rm_xpc_hw_private.h
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+/*
+ * Copyright (c) 2010 NVIDIA Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of the NVIDIA Corporation nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/**
+ * @file
+ * @brief <b>nVIDIA Driver Development Kit:
+ * Priate Hw access function for XPC driver </b>
+ *
+ * @b Description: Defines the private interface functions for the xpc
+ *
+ */
+
+#ifndef INCLUDED_RM_XPC_HW_PRIVATE_H
+#define INCLUDED_RM_XPC_HW_PRIVATE_H
+
+
+#include "nvcommon.h"
+#include "nvrm_init.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+// Combines the cpu avp hw mail baox system information.
+typedef struct CpuAvpHwMailBoxRegRec
+{
+ // Hw mail box register virtual base address.
+ NvU32 *pHwMailBoxRegBaseVirtAddr;
+
+ // Bank size of the hw regsiter.
+ NvU32 BankSize;
+
+ // Tells whether this is on cpu or on Avp
+ NvBool IsCpu;
+
+ // Mail box data which was read last time.
+ NvU32 MailBoxData;
+} CpuAvpHwMailBoxReg;
+
+void NvRmPrivXpcHwResetOutbox(CpuAvpHwMailBoxReg *pHwMailBoxReg);
+
+/**
+ * Send message to the target.
+ */
+void
+NvRmPrivXpcHwSendMessageToTarget(
+ CpuAvpHwMailBoxReg *pHwMailBoxReg,
+ NvRmPhysAddr MessageAddress);
+
+/**
+ * Receive message from the target.
+ */
+void
+NvRmPrivXpcHwReceiveMessageFromTarget(
+ CpuAvpHwMailBoxReg *pHwMailBoxReg,
+ NvRmPhysAddr *pMessageAddress);
+
+
+#if defined(__cplusplus)
+ }
+#endif
+
+#endif // INCLUDED_RM_XPC_HW_PRIVATE_H