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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: chips/p9/procedures/hwp/nest/p9_revert_sbe_mcs_setup.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* EKB Project */
/* */
/* COPYRIGHT 2015 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* IBM_PROLOG_END_TAG */
///
/// @file p9_revert_sbe_mcs_setup.C
/// @brief Revert MC configuration applied by SBE (FAPI2)
///
/// @author Joe McGill <jmcgill@us.ibm.com>
///
//
// *HWP HWP Owner: Joe McGill <jmcgill@us.ibm.com>
// *HWP FW Owner: Thi Tran <thi@us.ibm.com>
// *HWP Team: Nest
// *HWP Level: 2
// *HWP Consumed by: HB
//
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <p9_revert_sbe_mcs_setup.H>
#include <p9_mc_scom_addresses.H>
#include <p9_mc_scom_addresses_fld.H>
//------------------------------------------------------------------------------
// Function prototypes
//------------------------------------------------------------------------------
///
/// @brief Reset SBE applied hostboot dcbz MC configuration for one unit target
///
/// @param[in] i_target Reference to an MC target (MCS/MI)
/// @return FAPI2_RC_SUCCESS if success, else error code.
///
template<fapi2::TargetType T>
fapi2::ReturnCode revert_hb_dcbz_config(const fapi2::Target<T>& i_target);
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
// specialization for MCS target type
template<>
fapi2::ReturnCode revert_hb_dcbz_config(const fapi2::Target<fapi2::TARGET_TYPE_MCS>& i_target)
{
FAPI_DBG("Start");
fapi2::buffer<uint64_t> l_mcfgp;
fapi2::buffer<uint64_t> l_mcmode1;
fapi2::buffer<uint64_t> l_mcfirmask;
// MCFGP -- mark BAR invalid & reset grouping configuration fields
FAPI_TRY(fapi2::getScom(i_target, MCS_MCFGP, l_mcfgp),
"Error from getScom (MCS_MCFGP)");
l_mcfgp.clearBit<MCS_MCFGP_VALID>();
l_mcfgp.clearBit<MCS_MCFGP_MC_CHANNELS_PER_GROUP,
MCS_MCFGP_MC_CHANNELS_PER_GROUP_LEN>();
l_mcfgp.clearBit<MCS_MCFGP_CHANNEL_0_GROUP_MEMBER_IDENTIFICATION,
MCS_MCFGP_CHANNEL_0_GROUP_MEMBER_IDENTIFICATION_LEN>();
l_mcfgp.clearBit<MCS_MCFGP_GROUP_SIZE, MCS_MCFGP_GROUP_SIZE_LEN>();
FAPI_TRY(fapi2::putScom(i_target, MCS_MCFGP, l_mcfgp),
"Error from putScom (MCS_MCFGP)");
// MCMODE1 -- enable speculation
FAPI_TRY(fapi2::getScom(i_target, MCS_MCMODE1, l_mcmode1),
"Error from getScom (MCS_MCMODE1)");
l_mcmode1.clearBit<MCS_MCMODE1_DISABLE_ALL_SPEC_OPS>();
l_mcmode1.clearBit<MCS_MCMODE1_DISABLE_SPEC_OP,
MCS_MCMODE1_DISABLE_SPEC_OP_LEN>();
FAPI_TRY(fapi2::putScom(i_target, MCS_MCMODE1, l_mcmode1),
"Error from putScom (MCS_MCMODE1)");
// MCFIRMASK -- mask all errors
l_mcfirmask.flush<1>();
FAPI_TRY(fapi2::putScom(i_target, MCS_MCFIRMASK_OR, l_mcfirmask),
"Error from putScom (MCS_MCFIRMASK_OR)");
fapi_try_exit:
FAPI_DBG("End");
return fapi2::current_err;
}
// specialization for MI target type
template<>
fapi2::ReturnCode revert_hb_dcbz_config(const fapi2::Target<fapi2::TARGET_TYPE_MI>& i_target)
{
// TODO: implement for Cumulus (MI target)
return fapi2::current_err;
}
// HWP entry point
fapi2::ReturnCode
p9_revert_sbe_mcs_setup(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target)
{
FAPI_INF("Start");
auto l_mcs_chiplets = i_target.getChildren<fapi2::TARGET_TYPE_MCS>();
if (l_mcs_chiplets.size())
{
for (auto l_target_mcs : l_mcs_chiplets)
{
FAPI_TRY(revert_hb_dcbz_config(l_target_mcs),
"Error from revert_hb_dcbz_config (MCS)");
}
}
else
{
auto l_mi_chiplets = i_target.getChildren<fapi2::TARGET_TYPE_MI>();
for (auto l_target_mi : l_mi_chiplets)
{
FAPI_TRY(revert_hb_dcbz_config(l_target_mi),
"Error from revert_hb_dcbz_config (MI)");
}
}
fapi_try_exit:
FAPI_INF("End");
return fapi2::current_err;
}
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