/* IBM_PROLOG_BEGIN_TAG                                                   */
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/* $Source: src/import/chips/ocmb/common/procedures/hwp/pmic/lib/utils/pmic_common_utils.H $ */
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/* OpenPOWER HostBoot Project                                             */
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/* Contributors Listed Below - COPYRIGHT 2019                             */
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/* IBM_PROLOG_END_TAG                                                     */


///
/// @file pmic_common_utils.H
/// @brief Utility functions common for several PMIC procedures
///
// *HWP HWP Owner: Mark Pizzutillo <mark.pizzutillo@ibm.com>
// *HWP HWP Backup: Louis Stermole <stermole@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 1
// *HWP Consumed by: FSP:HB

#ifndef __PMIC_COMMON_UTILS_H__
#define __PMIC_COMMON_UTILS_H__

#include <fapi2.H>
#include <pmic_regs.H>
#include <pmic_regs_fld.H>
#include <lib/utils/pmic_consts.H>
#include <mss_pmic_attribute_getters.H>
#include <generic/memory/lib/utils/find.H>

namespace mss
{
namespace pmic
{

// Attribute getter pointer for manufacturer/vendor ID
typedef fapi2::ReturnCode (*mfg_id_attr_ptr)(const fapi2::Target<fapi2::TARGET_TYPE_DIMM>& i_target, uint16_t& o_value);

// Manufacturer / Vendor ID
static constexpr mfg_id_attr_ptr get_mfg_id[] =
{
    mss::attr::get_pmic0_mfg_id,
    mss::attr::get_pmic1_mfg_id
};

using REGS = pmicRegs<mss::pmic::product::JEDEC_COMPLIANT>;
using FIELDS = pmicFields<mss::pmic::product::JEDEC_COMPLIANT>;
using CONSTS = mss::pmic::consts<mss::pmic::product::JEDEC_COMPLIANT>;;

// Arrays to easily index common parameters by rail
static constexpr uint8_t const VOLT_SETTING_ACTIVE_REGS[] =
{
    REGS::R21_SWA_VOLTAGE_SETTING,
    REGS::R23_SWB_VOLTAGE_SETTING,
    REGS::R25_SWC_VOLTAGE_SETTING,
    REGS::R27_SWD_VOLTAGE_SETTING
};

static constexpr uint8_t const VOLT_SETTING_VENDOR_REGS[] =
{
    REGS::R45_SWA_VOLTAGE_SETTING,
    REGS::R47_SWB_VOLTAGE_SETTING,
    REGS::R49_SWC_VOLTAGE_SETTING,
    REGS::R4B_SWD_VOLTAGE_SETTING
};

static constexpr uint8_t const VOLT_RANGE_FLDS[] =
{
    FIELDS::SWA_VOLTAGE_RANGE,
    FIELDS::SWB_VOLTAGE_RANGE,
    FIELDS::SWC_VOLTAGE_RANGE,
    FIELDS::SWD_VOLTAGE_RANGE
};

static constexpr uint32_t const VOLT_RANGE_MINS[][CONSTS::NUM_RANGES] =
{
    {CONSTS::SWABC_VOLT_RANGE0_MIN, CONSTS::SWABC_VOLT_RANGE1_MIN},
    {CONSTS::SWABC_VOLT_RANGE0_MIN, CONSTS::SWABC_VOLT_RANGE1_MIN},
    {CONSTS::SWABC_VOLT_RANGE0_MIN, CONSTS::SWABC_VOLT_RANGE1_MIN},
    {CONSTS::SWD_VOLT_RANGE0_MIN,   CONSTS::SWD_VOLT_RANGE1_MIN}
};

static constexpr uint32_t const VOLT_RANGE_MAXES[][CONSTS::NUM_RANGES] =
{
    {CONSTS::SWABC_VOLT_RANGE0_MAX, CONSTS::SWABC_VOLT_RANGE1_MAX},
    {CONSTS::SWABC_VOLT_RANGE0_MAX, CONSTS::SWABC_VOLT_RANGE1_MAX},
    {CONSTS::SWABC_VOLT_RANGE0_MAX, CONSTS::SWABC_VOLT_RANGE1_MAX},
    {CONSTS::SWD_VOLT_RANGE0_MAX,   CONSTS::SWD_VOLT_RANGE1_MAX}
};

///
/// @brief Get the valid pmics for id object
///
/// @param[in] i_pmic_target
/// @param[in] i_id
/// @param[out] o_pmics vector of PMICS matching
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success
///
inline std::vector<fapi2::Target<fapi2::TARGET_TYPE_PMIC>> get_valid_pmics_for_id(
            const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_ocmb_target,
            const mss::pmic::id i_id)
{
    using CONSTS = mss::pmic::consts<mss::pmic::product::JEDEC_COMPLIANT>;
    std::vector<fapi2::Target<fapi2::TARGET_TYPE_PMIC>> l_output_pmics;

    const auto l_pmics = mss::find_targets<fapi2::TARGET_TYPE_PMIC>(i_ocmb_target);

    for (const auto& l_pmic : l_pmics)
    {
        if (mss::index(l_pmic) % CONSTS::NUM_UNIQUE_PMICS == i_id)
        {
            l_output_pmics.push_back(l_pmic);
        }
    }

    return l_output_pmics;
}

///
/// @brief polls PMIC for PBULK PWR_GOOD status
///
/// @param[in] i_pmic_target PMIC target
/// @return fapi2::ReturnCode success if good, error if polling fail or power not good
///
fapi2::ReturnCode poll_for_pbulk_good(
    const fapi2::Target<fapi2::TargetType::TARGET_TYPE_PMIC>& i_pmic_target);

///
/// @brief Unlocks PMIC vendor region
///
/// @param[in] i_pmic_target JEDEC-COMPLIANT PMIC to unlock
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success
///
fapi2::ReturnCode unlock_vendor_region(const fapi2::Target<fapi2::TargetType::TARGET_TYPE_PMIC>& i_pmic_target);

///
/// @brief Locks PMIC vendor region
///
/// @param[in] i_pmic_target - JEDEC-COMPLIANT PMIC to lock
/// @param[in] i_rc - return code from the end of the caller function (if applicable)
/// @return fapi2::ReturnCode - FAPI2_RC_SUCCESS iff i_rc == SUCCESS && no errors in unlocking, else return current_err
///
fapi2::ReturnCode lock_vendor_region(const fapi2::Target<fapi2::TargetType::TARGET_TYPE_PMIC>& i_pmic_target,
                                     const fapi2::ReturnCode i_rc = fapi2::FAPI2_RC_SUCCESS);

///
/// @brief Check if PMIC is IDT vendor
///
/// @param[in] i_pmic_target PMIC target
/// @param[out] o_is_idt true/false
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success, else error code
///
fapi2::ReturnCode pmic_is_idt(const fapi2::Target<fapi2::TARGET_TYPE_PMIC>& i_pmic_target, bool& o_is_idt);

namespace status
{

///
/// @brief Information for each field that we can iterate through
///
struct status_field
{
    uint8_t l_reg_field;
    const char* l_error_description;
};

static const std::vector<std::pair<uint8_t, std::vector<status_field>>> IDT_SPECIFIC_STATUS_FIELDS =
{
    {
        REGS::R04,
        {   {FIELDS::R04_GLOBAL_ERROR_COUNT, "GLOBAL_ERROR_COUNT: >1 error count since last erase operation"},
            {FIELDS::R04_GLOBAL_ERROR_LOG_BUCK_OV_OR_UV, "GLOBAL_ERROR_LOG: BUCK OV/UV: Error occurred"},
            {FIELDS::R04_GLOBAL_ERROR_LOG_VIN_BULK_OVER_VOLTAGE, "GLOBAL_ERROR_LOG: VIN_BULK_OVER_VOLTAGE"},
            {FIELDS::R04_GLOBAL_ERROR_LOG_CRITICAL_TEMPERATURE, "GLOBAL_ERROR_LOG: CRITICAL_TEMPERATURE"}
        }
    },

    {
        REGS::R05,
        {   {FIELDS::R05_SWA_POWER_GOOD, "PMIC POWER ON: SWA_PWR_NOT_GOOD"},
            {FIELDS::R05_SWB_POWER_GOOD, "PMIC POWER ON: SWB_PWR_NOT_GOOD"},
            {FIELDS::R05_SWC_POWER_GOOD, "PMIC POWER ON: SWC_PWR_NOT_GOOD"},
            {FIELDS::R05_SWD_POWER_GOOD, "PMIC POWER ON: SWD_PWR_NOT_GOOD"}
        }
    },

    {
        REGS::R06,
        {   {FIELDS::R06_SWA_UNDER_VOLTAGE_LOCKOUT, "SWA_UNDER_VOLTAGE_LOCKOUT"},
            {FIELDS::R06_SWB_UNDER_VOLTAGE_LOCKOUT, "SWB_UNDER_VOLTAGE_LOCKOUT"},
            {FIELDS::R06_SWC_UNDER_VOLTAGE_LOCKOUT, "SWC_UNDER_VOLTAGE_LOCKOUT"},
            {FIELDS::R06_SWD_UNDER_VOLTAGE_LOCKOUT, "SWD_UNDER_VOLTAGE_LOCKOUT"},
            {FIELDS::R06_SWA_OVER_VOLTAGE, "SWA_OVER_VOLTAGE"},
            {FIELDS::R06_SWB_OVER_VOLTAGE, "SWB_OVER_VOLTAGE"},
            {FIELDS::R06_SWC_OVER_VOLTAGE, "SWC_OVER_VOLTAGE"},
            {FIELDS::R06_SWD_OVER_VOLTAGE, "SWD_OVER_VOLTAGE"}
        }
    }
};

///
/// @brief const vector of statuses to check
///
static const std::vector<std::pair<uint8_t, std::vector<status_field>>> STATUS_FIELDS =
{
    {
        REGS::R08,
        {   {FIELDS::R08_VIN_BULK_INPUT_PWR_GOOD_STATUS, "VIN_BULK_INPUT_PWR_NOT_GOOD"},
            {FIELDS::R08_CRITICAL_TEMP_SHUTDOWN_STATUS,  "CRITICAL_TEMP_SHUTDOWN"},
            {FIELDS::R08_SWA_PWR_GOOD_STATUS,            "SWA_PWR_NOT_GOOD"},
            {FIELDS::R08_SWB_PWR_GOOD_STATUS,            "SWB_PWR_NOT_GOOD"},
            {FIELDS::R08_SWC_PWR_GOOD_STATUS,            "SWC_PWR_NOT_GOOD"},
            {FIELDS::R08_SWD_PWR_GOOD_STATUS,            "SWD_PWR_NOT_GOOD"},
            {FIELDS::R08_VIN_MGMT_INPUT_OVER_VOLTAGE,    "VIN_MGMT_INPUT_OVER_VOLTAGE"},
            {FIELDS::R08_VIN_BULK_INPUT_OVER_VOLTAGE,    "VIN_BULK_INPUT_OVER_VOLTAGE"}
        }
    },

    {
        REGS::R09,
        {   {FIELDS::R09_PMIC_HIGH_TEMP_WARNING_STATUS,                      "PMIC Temperature exceeded warning threshold"},
            {FIELDS::R09_VBIAS_PWR_GOOD_STATUS,                              "VBIAS_PWR_NOT_GOOD"},
            {FIELDS::R09_VOUT_1_8_V_PWR_GOOD_STATUS,                         "VOUT_1.8V_PWR_NOT_GOOD"},
            {FIELDS::R09_VIN_MGMT_TO_VIN_BULK_SWITCHOVER_STATUS,             "VIN_MGMT is removed (using VIN_Bulk)"},
            {FIELDS::R09_SWA_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING_STATUS, "SWA_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING"},
            {FIELDS::R09_SWB_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING_STATUS, "SWB_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING"},
            {FIELDS::R09_SWC_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING_STATUS, "SWC_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING"},
            {FIELDS::R09_SWD_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING_STATUS, "SWD_HIGH_OUTPUT_CURRENT_CONSUMPTION_WARNING"}
        }
    },

    {
        REGS::R0A,
        {   {FIELDS::R0A_SWA_OUTPUT_OVER_VOLTAGE_STATUS, "SWA_OUTPUT_OVER_VOLTAGE"},
            {FIELDS::R0A_SWB_OUTPUT_OVER_VOLTAGE_STATUS, "SWB_OUTPUT_OVER_VOLTAGE"},
            {FIELDS::R0A_SWC_OUTPUT_OVER_VOLTAGE_STATUS, "SWC_OUTPUT_OVER_VOLTAGE"},
            {FIELDS::R0A_SWD_OUTPUT_OVER_VOLTAGE_STATUS, "SWD_OUTPUT_OVER_VOLTAGE"},
            {FIELDS::R0A_PEC_ERROR_STATUS,               "PEC_ERROR"},
            {FIELDS::R0A_PARITY_ERROR_STATUS,            "PARITY_ERROR"},
            {FIELDS::R0A_IBI_STATUS,                     "PENDING_IBI"}
        }
    },

    {
        REGS::R0B,
        {   {FIELDS::R0B_SWA_OUTPUT_CURRENT_LIMITER_WARNING_STATUS, "SWA_OUTPUT_CURRENT_LIMITER_EVENT"},
            {FIELDS::R0B_SWB_OUTPUT_CURRENT_LIMITER_WARNING_STATUS, "SWB_OUTPUT_CURRENT_LIMITER_EVENT"},
            {FIELDS::R0B_SWC_OUTPUT_CURRENT_LIMITER_WARNING_STATUS, "SWC_OUTPUT_CURRENT_LIMITER_EVENT"},
            {FIELDS::R0B_SWD_OUTPUT_CURRENT_LIMITER_WARNING_STATUS, "SWD_OUTPUT_CURRENT_LIMITER_EVENT"},
            {FIELDS::R0B_SWA_OUTPUT_UNDER_VOLTAGE_LOCKOUT_STATUS  , "SWA_OUTPUT_UNDER_VOLTAGE_LOCKOUT"},
            {FIELDS::R0B_SWB_OUTPUT_UNDER_VOLTAGE_LOCKOUT_STATUS  , "SWB_OUTPUT_UNDER_VOLTAGE_LOCKOUT"},
            {FIELDS::R0B_SWC_OUTPUT_UNDER_VOLTAGE_LOCKOUT_STATUS  , "SWC_OUTPUT_UNDER_VOLTAGE_LOCKOUT"},
            {FIELDS::R0B_SWD_OUTPUT_UNDER_VOLTAGE_LOCKOUT_STATUS  , "SWD_OUTPUT_UNDER_VOLTAGE_LOCKOUT"}
        }
    }
};

///
/// @brief Checks that the PMIC is enabled via VR Enable bit
///
/// @param[in] i_ocmb_target OCMB target
/// @param[in] i_pmic_target PMIC target
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success, else error code
///
fapi2::ReturnCode check_for_vr_enable(
    const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_ocmb_target,
    const fapi2::Target<fapi2::TargetType::TARGET_TYPE_PMIC>& i_pmic_target);

///
/// @brief Check the statuses of all PMICs present on the given OCMB chip
///
/// @param[in] i_ocmb_target OCMB target
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS if success, else error code
/// @note the returned target is only valid if o_errors returns as true. Else, the target is an uninitialized blank target!
///
fapi2::ReturnCode check_all_pmics(const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_ocmb_target);

///
/// @brief Check the PMIC's status codes and report back if an error occurred
///
/// @param[in] i_pmic_target PMIC target
/// @param[out] o_error true/false
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success, else error
///
fapi2::ReturnCode check_pmic(const fapi2::Target<fapi2::TARGET_TYPE_PMIC>& i_pmic_target, bool& o_error);

///
/// @brief Check the IDT specific status codes
///
/// @param[in] i_pmic_target PMIC target
/// @param[in] i_statuses STATUS object to check
/// @param[out] o_error At least one error bit was found to be set
/// @return fapi2::ReturnCode FAPI2_RC_SUCCESS iff success, else error in case of an I2C read error
///
fapi2::ReturnCode check_fields(
    const fapi2::Target<fapi2::TARGET_TYPE_PMIC>& i_pmic_target,
    const std::vector<std::pair<uint8_t, std::vector<status_field>>>& i_statuses,
    bool& o_error);

} // status
} // pmic
} // mss

#endif