/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
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/* $Source: import/chips/p9/common/pmlib/occlib/occhw_shared_data.h $     */
/*                                                                        */
/* OpenPOWER HCODE Project                                                */
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/* COPYRIGHT 2015,2017                                                    */
/* [+] International Business Machines Corp.                              */
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/*                                                                        */
/* Licensed under the Apache License, Version 2.0 (the "License");        */
/* you may not use this file except in compliance with the License.       */
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/*     http://www.apache.org/licenses/LICENSE-2.0                         */
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/* distributed under the License is distributed on an "AS IS" BASIS,      */
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/* IBM_PROLOG_END_TAG                                                     */
#ifndef __OCCHW_OSD_H__
#define __OCCHW_OSD_H__

/// \file occhw_osd.h
/// \brief Common header for shared data within the OCC complex
///

#include "kernel.h"
#include "ipc_structs.h"
#include "occhw_scom_cmd.h"

/// Hardcoded address for the location of the OCC shared data segment
/// This is placed in the non-cacheable aliased region of SRAM space
#ifndef OSD_ADDR
    #define OSD_ADDR 0xf7f00000
#endif

/// Total space of the OCC shared data segment
#define OSD_TOTAL_SHARED_DATA_BYTES 4096

/// Reserve space for IPC data in case it needs to grow
#define OSD_IPC_RESERVED_BYTES 2048

/// Reserve space for Debug
#define OSD_DEBUG_RESERVED_BYTES 512

#define OSD_GPE_SCOM_ADDR (OSD_ADDR + OSD_IPC_RESERVED_BYTES + OSD_DEBUG_RESERVED_BYTES)

#define OSD_GPE_SCOM_RESERVED_BYTES 32

#ifndef __ASSEMBLER__
typedef union
{
    struct
    {
        union
        {
            ipc_shared_data_t   ipc_data;   //880 bytes
            uint8_t             ipc_reserved[OSD_IPC_RESERVED_BYTES];
        };
        union
        {
            //debug_shared_data_t debug_data;
            uint8_t             debug_reserved[OSD_DEBUG_RESERVED_BYTES];
        };
        union
        {
            occhw_scom_cmd_t    scom_cmd;
            uint8_t             gpe_scom_reserved[OSD_GPE_SCOM_RESERVED_BYTES];
        };

    };
    uint8_t total_reserved[OSD_TOTAL_SHARED_DATA_BYTES];
} occhw_osd_t;

// Fail to compile if ipc_shared_data exceeds the reserved space
KERN_STATIC_ASSERT((sizeof(ipc_shared_data_t) <= OSD_IPC_RESERVED_BYTES));

/// Hardcoded pointer for the location of the OCC shared data segment
#define OSD_PTR ((occhw_osd_t*) OSD_ADDR)

#endif /*__ASSEMBLER__*/

#endif  /* __OCCHW_OSD_H__ */
