/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* $Source: import/chips/p9/procedures/utils/stopreg/p9_stop_api.H $      */
/*                                                                        */
/* OpenPOWER HCODE Project                                                */
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/* COPYRIGHT 2015,2017                                                    */
/* [+] International Business Machines Corp.                              */
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/* IBM_PROLOG_END_TAG                                                     */
#ifndef __P9_STOP_IMAGE_API_
#define __P9_STOP_IMAGE_API_

#include <stdint.h>

#ifdef __SKIBOOT__
    #include <skiboot.h>
#endif

///
/// @file   p9_stop_api.H
/// @brief  describes STOP API which  create/manipulate STOP image.
///
// *HWP HW Owner    :  Greg Still <stillgs@us.ibm.com>
// *HWP FW Owner    :  Prem Shanker Jha <premjha2@in.ibm.com>
// *HWP Team        :  PM
// *HWP Level       :  2
// *HWP Consumed by :  HB:HYP

#ifdef __cplusplus
namespace stopImageSection
{
#endif

/**
 * @brief   all SPRs and MSR for which register restore is to be supported.
 * @note    STOP API design has built in support to accomodate 8 register of
 *          scope core and thread each.
 */
typedef enum
{
    P9_STOP_SPR_DAWR    =    180,   // thread register
    P9_STOP_SPR_HSPRG0  =    304,   // thread register
    P9_STOP_SPR_HRMOR   =    313,   // core register
    P9_STOP_SPR_LPCR    =    318,   // thread register
    P9_STOP_SPR_HMEER   =    337,   // core register
    P9_STOP_SPR_LDBAR   =    850,   // thread register
    P9_STOP_SPR_PSSCR   =    855,   // thread register
    P9_STOP_SPR_PMCR    =    884,   // core register
    P9_STOP_SPR_HID     =   1008,   // core register
    P9_STOP_SPR_MSR     =   2000,   // thread register
} CpuReg_t;

/**
 * @brief lists all the bad error codes.
 */
typedef enum
{
    STOP_SAVE_SUCCESS                    = 0,
    STOP_SAVE_ARG_INVALID_IMG            = 1,
    STOP_SAVE_ARG_INVALID_REG            = 2,
    STOP_SAVE_ARG_INVALID_THREAD         = 3,
    STOP_SAVE_ARG_INVALID_MODE           = 4,
    STOP_SAVE_ARG_INVALID_CORE           = 5,
    STOP_SAVE_SPR_ENTRY_NOT_FOUND        = 6,
    STOP_SAVE_SPR_ENTRY_UPDATE_FAILED    = 7,
    STOP_SAVE_SCOM_INVALID_OPERATION     = 8,
    STOP_SAVE_SCOM_INVALID_SECTION       = 9,
    STOP_SAVE_SCOM_INVALID_ADDRESS       = 10,
    STOP_SAVE_SCOM_INVALID_CHIPLET       = 11,
    STOP_SAVE_SCOM_ENTRY_UPDATE_FAILED   = 12,
    STOP_SAVE_INVALID_FUSED_CORE_STATUS  = 13,
    STOP_SAVE_FAIL                       = 14,  // for internal failure within firmware.
} StopReturnCode_t;

/**
 * @brief summarizes all operations supported on scom entries of STOP image.
 */
typedef enum
{
    P9_STOP_SCOM_OP_MIN     = 0,
    P9_STOP_SCOM_APPEND     = 1,
    P9_STOP_SCOM_REPLACE    = 2,
    P9_STOP_SCOM_OR         = 3,
    P9_STOP_SCOM_AND        = 4,
    P9_STOP_SCOM_NOOP       = 5,
    P9_STOP_SCOM_RESET      = 6,
    P9_STOP_SCOM_OR_APPEND  = 7,
    P9_STOP_SCOM_AND_APPEND = 8,
    P9_STOP_SCOM_OP_MAX     = 9
} ScomOperation_t;

/**
 * @brief All subsections that contain scom entries in a STOP image.
 */
typedef enum
{
    P9_STOP_SECTION_MIN         = 0,
    P9_STOP_SECTION_CORE_SCOM   = 1,
    P9_STOP_SECTION_EQ_SCOM     = 2,
    P9_STOP_SECTION_L2          = 3,
    P9_STOP_SECTION_L3          = 4,
    P9_STOP_SECTION_MAX         = 5
} ScomSection_t;

#ifdef __cplusplus
extern "C" {
#endif
/**
 * @brief   Updates STOP image entry associated with CPU register.
 * @param[in]   i_pImage    start address of homer image associated with processor.
 * @param[in]   i_regId     id of SPR for which STOP image needs to be updated.
 * @param[in]   i_regData   data to be restored in SPR register.
 * @param[in]   i_pir       value of processor identification register (PIR)
 * @return      STOP_SAVE_SUCCESS SUCCESS if image is updated successfully, error
 *              code otherwise.
 */

StopReturnCode_t p9_stop_save_cpureg(  void* const i_pImage,
                                       const CpuReg_t  i_regId,
                                       const uint64_t  i_regData,
                                       const uint64_t  i_pir );

/**
 * @brief   Updates scom image entry associated with given core or cache in
 *          STOP section of homer image.
 * @param[in]   i_pImage        start address of homer image of P9 chip.
 * @param[in]   i_scomAddress   fully qualified address of SCOM register.
 * @param[in]   i_scomData      data associated with SCOM register.
 * @param[in]   i_operation     operation to be done on SCOM image entry.
 * @param[in]   i_section       area to which given SCOM entry belongs.
 * @return      STOP_SAVE_SUCCESS if image is updated successfully, error code
 *              otherwise.
 * @note        API is intended to update SCOM image entry associated with given
 *              core or given part of a cache section. API doesn't validate if
 *              a given SCOM address really belongs to given section.
 */
StopReturnCode_t p9_stop_save_scom( void* const   i_pImage,
                                    const uint32_t i_scomAddress,
                                    const uint64_t i_scomData,
                                    const ScomOperation_t i_operation,
                                    const ScomSection_t i_section );

#ifdef __cplusplus
} // extern "C"
};  // namespace stopImageSection ends
#endif //__cplusplus

#endif //__P9_STOP_IMAGE_API_
