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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: chips/p9/procedures/hwp/memory/lib/mc/mc.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* EKB Project */
/* */
/* COPYRIGHT 2016 */
/* [+] 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 mc.C
/// @brief Subroutines to manipulate the memory controller
///
// *HWP HWP Owner: Brian Silver <bsilver@us.ibm.com>
// *HWP HWP Backup: Jacob Harvey <jlharvey@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 2
// *HWP Consumed by: FSP:HB
#include <fapi2.H>
#include <lib/utils/dump_regs.H>
#include <lib/mc/mc.H>
#include <lib/utils/find.H>
using fapi2::TARGET_TYPE_MCA;
using fapi2::TARGET_TYPE_MCS;
namespace mss
{
///
/// @brief Dump the registers of the MC (MCA_MBA, MCS)
/// @param[in] i_target the MCS target
/// @return fapi2::FAPI2_RC_SUCCESS if ok
///
template<>
fapi2::ReturnCode dump_regs( const fapi2::Target<TARGET_TYPE_MCS>& i_target )
{
return fapi2::FAPI2_RC_SUCCESS;
}
namespace mc
{
///
/// @brief safemode throttle values defined from MRW attributes
/// @param[in] i_target the MCA target
/// @return fapi2::FAPI2_RC_SUCCESS if ok
/// @note sets safemode values for emergency mode and regular throttling
///
fapi2::ReturnCode thermal_throttle_scominit (const fapi2::Target<fapi2::TARGET_TYPE_MCA>& i_target)
{
uint32_t l_throttle_denominator = 0;
FAPI_TRY( mss::mem_m_dram_clocks( i_target, l_throttle_denominator) );
{
fapi2::buffer<uint64_t> l_data;
FAPI_TRY(mss::getScom(i_target, MCA_MBA_FARB3Q, l_data));
uint32_t l_throttle_per_port = 0;
FAPI_TRY( mss::mrw_safemode_mem_throttled_n_commands_per_port( l_throttle_per_port) );
l_data.insertFromRight<MCA_MBA_FARB3Q_CFG_NM_N_PER_SLOT, MCA_MBA_FARB3Q_CFG_NM_N_PER_SLOT_LEN>(l_throttle_per_port);
l_data.insertFromRight<MCA_MBA_FARB3Q_CFG_NM_N_PER_PORT, MCA_MBA_FARB3Q_CFG_NM_N_PER_PORT_LEN>(l_throttle_per_port);
l_data.insertFromRight<MCA_MBA_FARB3Q_CFG_NM_M, MCA_MBA_FARB3Q_CFG_NM_M_LEN>(l_throttle_denominator);
l_data.clearBit<MCA_MBA_FARB3Q_CFG_NM_CHANGE_AFTER_SYNC>();
FAPI_TRY( mss::putScom(i_target, MCA_MBA_FARB3Q, l_data) );
}
{
fapi2::buffer<uint64_t> l_data;
uint32_t l_throttle_per_slot = 0;
FAPI_TRY( mss::mrw_safemode_mem_throttled_n_commands_per_port(l_throttle_per_slot) );
FAPI_TRY( mss::getScom(i_target, MCA_MBA_FARB4Q, l_data) );
l_data.insertFromRight<MCA_MBA_FARB4Q_EMERGENCY_M, MCA_MBA_FARB4Q_EMERGENCY_M_LEN>(l_throttle_denominator);
l_data.insertFromRight<MCA_MBA_FARB4Q_EMERGENCY_N, MCA_MBA_FARB4Q_EMERGENCY_N_LEN>(l_throttle_per_slot);
FAPI_TRY( mss::putScom(i_target, MCA_MBA_FARB4Q, l_data) );
}
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Disable emergency mode throttle for thermal_init
/// @param[in] i_target the MCS target
/// @return fapi2::FAPI2_RC_SUCCESS if ok
/// @note Clears MCMODE0_ENABLE_EMER_THROTTLE bit in MCSMODE0
///
fapi2::ReturnCode disable_emergency_throttle (const fapi2::Target<fapi2::TARGET_TYPE_MCS>& i_target)
{
fapi2::buffer<uint64_t> l_data;
FAPI_TRY( mss::getScom(i_target, MCS_MCMODE0, l_data));
l_data.clearBit<MCS_MCMODE0_ENABLE_EMER_THROTTLE>();
FAPI_TRY( mss::putScom(i_target, MCS_MCMODE0, l_data));
fapi_try_exit:
return fapi2::current_err;
}
} // namespace mc
} //close namespace mss
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