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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/memory/p9_mss_freq.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
///
/// @file p9_mss_freq.H
/// @brief Calculate and save off DIMM frequencies
///
// *HWP HWP Owner: Andre Marin <aamarin@us.ibm.com>
// *HWP HWP Backup: Brian Silver <bsilver@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 1
// *HWP Consumed by: FSP:HB
#ifndef MSS_FREQ_H_
#define MSS_FREQ_H_
#include <fapi2.H>
#include <lib/freq/cas_latency.H>
#include <lib/freq/cycle_time.H>
#include <lib/shared/mss_const.H>
#include <lib/utils/conversions.H>
namespace mss
{
///
/// @brief Checks for frequency override and sets dimm frequency and timing values
/// @param[in] i_target mcbist fapi2 target
/// @param[out] o_tCK new cycle time if there is a freq override
/// @return FAPI2_RC_SUCCESS iff ok
///
inline fapi2::ReturnCode check_for_freq_override(const fapi2::Target<fapi2::TARGET_TYPE_MCBIST>& i_target,
uint64_t& o_tCK)
{
uint64_t l_freq_override = 0;
FAPI_TRY(freq_override(i_target, l_freq_override),
"Failed to override frequency!");
// If there is no override, don't change anything
if ( l_freq_override != fapi2::ENUM_ATTR_MSS_FREQ_OVERRIDE_AUTO)
{
o_tCK = mss::freq_to_ps(l_freq_override);
FAPI_DBG( "Override Frequency Detected: %d", l_freq_override);
}
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Sets DRAM CAS latency attributes
/// @param[in] i_target the controller target
/// @param[in] i_cas_latency final selected CAS ltency
/// @return FAPI2_RC_SUCCESS iff ok
///
inline fapi2::ReturnCode set_CL_attr(const fapi2::Target<fapi2::TARGET_TYPE_MCS>& i_target,
uint64_t i_cas_latency)
{
// Declaration of the vector correctly initializes it to the right size
// in the case the enum for PORTS_PER_MCS changes
std::vector<uint8_t> l_cls_vect(PORTS_PER_MCS, uint8_t(i_cas_latency) );
// set CAS latency attribute
// casts vector into the type FAPI_ATTR_SET is expecting by deduction
FAPI_TRY( FAPI_ATTR_SET(fapi2::ATTR_EFF_DRAM_CL,
i_target,
UINT8_VECTOR_TO_1D_ARRAY(l_cls_vect, PORTS_PER_MCS)) ,
"Failed to set CAS latency attribute");
fapi_try_exit:
return fapi2::current_err;
}
///
/// @brief Sets frequency attributes
/// @param[in] i_target the controller target
/// @param[in] i_dimm_freq final selected dimm freq in MT/s
/// @return FAPI2_RC_SUCCESS iff ok
/// @note P9 Nimbus will support DMI speeds 16GB and 9.6GB
///
inline fapi2::ReturnCode set_freq_attrs(const fapi2::Target<fapi2::TARGET_TYPE_MCS>& i_target,
uint64_t i_dimm_freq)
{
// TK - RIT, needsto be corrected
uint64_t l_nest_freq = 2;
const auto l_mcbist = mss::find_target<fapi2::TARGET_TYPE_MCBIST>(i_target);
FAPI_INF("Setting freq attrs for %s", mss::c_str(i_target));
// TK
//Update for P9, what do we do w/setting nest freq? - AAM
// how do we select nest freq if we even have to??
FAPI_TRY( FAPI_ATTR_SET(fapi2::ATTR_MSS_NEST_CAPABLE_FREQUENCIES, l_mcbist, l_nest_freq),
"Failed to set nest capable frequencies attribute" );
FAPI_TRY(FAPI_ATTR_SET(fapi2::ATTR_MSS_FREQ, l_mcbist, i_dimm_freq),
"Failed to set mss freq attribute");
fapi_try_exit:
return fapi2::current_err;
}
}// mss namespace
typedef fapi2::ReturnCode (*p9_mss_freq_FP_t) (const fapi2::Target<fapi2::TARGET_TYPE_MCS>&);
extern "C"
{
///
/// @brief Calculate and save off DIMM frequencies
/// @param[in] i_target the controller (e.g., MCS)
/// @return FAPI2_RC_SUCCESS iff ok
///
fapi2::ReturnCode p9_mss_freq( const fapi2::Target<fapi2::TARGET_TYPE_MCS>& i_target);
}
#endif
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