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Diffstat (limited to 'src/import/generic/memory/lib/spd/lrdimm/ddr4/lrdimm_decoder_ddr4_v1_0.C')
| -rw-r--r-- | src/import/generic/memory/lib/spd/lrdimm/ddr4/lrdimm_decoder_ddr4_v1_0.C | 1368 |
1 files changed, 0 insertions, 1368 deletions
diff --git a/src/import/generic/memory/lib/spd/lrdimm/ddr4/lrdimm_decoder_ddr4_v1_0.C b/src/import/generic/memory/lib/spd/lrdimm/ddr4/lrdimm_decoder_ddr4_v1_0.C deleted file mode 100644 index dc3ef9cad..000000000 --- a/src/import/generic/memory/lib/spd/lrdimm/ddr4/lrdimm_decoder_ddr4_v1_0.C +++ /dev/null @@ -1,1368 +0,0 @@ -/* IBM_PROLOG_BEGIN_TAG */ -/* This is an automatically generated prolog. */ -/* */ -/* $Source: src/import/generic/memory/lib/spd/lrdimm/ddr4/lrdimm_decoder_ddr4_v1_0.C $ */ -/* */ -/* OpenPOWER HostBoot Project */ -/* */ -/* Contributors Listed Below - COPYRIGHT 2016,2018 */ -/* [+] 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 lrdimm_decoder_v1_0.C -/// @brief LRDIMM module SPD decoder definitions for revision 1.0 -/// -// *HWP HWP Owner: Andre Marin <aamarin@us.ibm.com> -// *HWP HWP Backup: Stephen Glancy <sglancy@us.ibm.com> -// *HWP Team: Memory -// *HWP Level: 3 -// *HWP Consumed by: HB:FSP - -// std lib -#include <vector> - -// fapi2 -#include <fapi2.H> - -// mss lib -#include <generic/memory/lib/spd/lrdimm/ddr4/lrdimm_decoder_ddr4.H> -#include <generic/memory/lib/spd/common/ddr4/spd_decoder_ddr4.H> -#include <generic/memory/lib/spd/spd_checker.H> -#include <generic/memory/lib/utils/c_str.H> -#include <generic/memory/lib/utils/find.H> - -using fapi2::TARGET_TYPE_MCA; -using fapi2::TARGET_TYPE_MCS; -using fapi2::TARGET_TYPE_DIMM; - - -namespace mss -{ -namespace spd -{ -namespace ddr4 -{ -namespace lrdimm -{ - -///////////////////////// -// Non-member helper functions -// For LRDIMM module rev 1.0 -///////////////////////// - -/// -/// @brief Helper function to find SPD byte based on freq -/// @param[in] i_dimm_speed DIMM speed in MT/s -/// @param[out] o_byte byte to extract spd from -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD spec sets encoding based on freq ranges such as, 1866 < data rate <= 2400, -/// -static fapi2::ReturnCode mdq_helper(const uint64_t i_dimm_speed, uint8_t& o_byte) -{ - switch(i_dimm_speed) - { - case fapi2::ENUM_ATTR_MSS_FREQ_MT1866: - o_byte = 145; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2133: - case fapi2::ENUM_ATTR_MSS_FREQ_MT2400: - o_byte = 146; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2666: - o_byte = 147; - break; - - default: - FAPI_ERR("Invalid dimm speed received: %d", i_dimm_speed); - return fapi2::FAPI2_RC_INVALID_PARAMETER; - break; - } - - return fapi2::FAPI2_RC_SUCCESS; -}; - -/// -/// @brief Helper function to find start bit based on freq -/// @param[in] i_dimm_speed DIMM speed in MT/s -/// @param[out] o_start_bit start bit to extract SPD from -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD spec sets encoding based on freq ranges such as, 1866 < data rate <= 2400, -/// -static fapi2::ReturnCode drive_strength_start_bit_finder(const uint64_t i_dimm_speed, size_t& o_start_bit) -{ - switch(i_dimm_speed) - { - case fapi2::ENUM_ATTR_MSS_FREQ_MT1866: - o_start_bit = 6; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2133: - case fapi2::ENUM_ATTR_MSS_FREQ_MT2400: - o_start_bit = 4; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2666: - o_start_bit = 2; - break; - - default: - FAPI_ERR("Invalid dimm speed received: %d", i_dimm_speed); - return fapi2::FAPI2_RC_INVALID_PARAMETER; - break; - } - - return fapi2::FAPI2_RC_SUCCESS; -} - -/// -/// @brief Helper function to find SPD byte based on freq -/// @param[in] i_dimm_speed DIMM speed in MT/s -/// @param[out] o_byte byte to extract spd from -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD spec sets encoding based on freq ranges such as, 1866 < data rate <= 2400, -/// -static fapi2::ReturnCode rtt_wr_and_nom_byte_finder(const uint64_t i_dimm_speed, size_t& o_byte) -{ - switch(i_dimm_speed) - { - case fapi2::ENUM_ATTR_MSS_FREQ_MT1866: - o_byte = 149; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2133: - case fapi2::ENUM_ATTR_MSS_FREQ_MT2400: - o_byte = 150; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2666: - o_byte = 151; - break; - - default: - FAPI_ERR("Invalid dimm speed received: %d", i_dimm_speed); - return fapi2::FAPI2_RC_INVALID_PARAMETER; - break; - } - - return fapi2::FAPI2_RC_SUCCESS; -} - -/// -/// @brief Helper function to find SPD byte based on freq -/// @param[in] i_dimm_speed DIMM speed in MT/s -/// @param[out] o_byte byte to extract spd from -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD spec sets encoding based on freq ranges such as, 1866 < data rate <= 2400, -/// -static fapi2::ReturnCode rtt_park_byte_finder(const uint64_t i_dimm_speed, size_t& o_byte) -{ - switch(i_dimm_speed) - { - case fapi2::ENUM_ATTR_MSS_FREQ_MT1866: - o_byte = 152; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2133: - case fapi2::ENUM_ATTR_MSS_FREQ_MT2400: - o_byte = 153; - break; - - case fapi2::ENUM_ATTR_MSS_FREQ_MT2666: - o_byte = 154; - break; - - default: - FAPI_ERR("Invalid dimm speed received: %d", i_dimm_speed); - return fapi2::FAPI2_RC_INVALID_PARAMETER; - break; - } - - return fapi2::FAPI2_RC_SUCCESS; -} - -///////////////////////// -// Member Method implementation -// For LRDIMM module rev 1.0 -///////////////////////// - -/// -/// @brief Decodes module nominal height max -/// @param[out] o_output height range encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 128 (Bits 4~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 55 -/// -fapi2::ReturnCode decoder_v1_0::max_module_nominal_height(uint8_t& o_output) const -{ - const uint8_t l_field_bits = extract_spd_field< MODULE_NOMINAL_HEIGHT >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 0b11111; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - MODULE_NOMINAL_HEIGHT.iv_byte, - l_field_bits, - "Failed bound check for module nominal height max") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Max module nominal height: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes raw card extension -/// @param[out] o_output raw card rev. encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 128 (Bits 7~5) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 55 -/// -fapi2::ReturnCode decoder_v1_0::raw_card_extension(uint8_t& o_output) const -{ - const uint8_t l_field_bits = extract_spd_field< RAW_CARD_EXTENSION >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 0b111; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - RAW_CARD_EXTENSION.iv_byte, - l_field_bits, - "Failed bound check for raw card extension") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Raw card extension: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes front module maximum thickness max -/// @param[out] o_output encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 129 (Bits 3~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 55 -/// -fapi2::ReturnCode decoder_v1_0::front_module_max_thickness(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< FRONT_MODULE_THICKNESS >(iv_target, iv_spd_data); - - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 0b1111; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - FRONT_MODULE_THICKNESS.iv_byte, - l_field_bits, - "Failed bound check for front module max thickness") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Front module max thickness: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; - -} - -/// -/// @brief Decodes back module maximum thickness max -/// @param[out] o_output encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 129 (Bits 7~4) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 55 -/// -fapi2::ReturnCode decoder_v1_0::back_module_max_thickness(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< BACK_MODULE_THICKNESS >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 0b1111; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - BACK_MODULE_THICKNESS.iv_byte, - l_field_bits, - "Failed bound check for back module max thickness") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Back module max thickness: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; - -} - -/// -/// @brief Decodes number of registers used on LRDIMM -/// @param[out] o_output encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 131 (Bits 1~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 57 -/// -fapi2::ReturnCode decoder_v1_0::num_registers_used(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< NUM_REGISTERS_USED >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t RESERVED = 0b10; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - NUM_REGISTERS_USED.iv_byte, - l_field_bits, - "Failed bound check for number of registers used on RDIMM ") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Number of registers used on LRDIMM : %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes number of rows of DRAMs on LRDIMM -/// @param[out] o_output encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 131 (Bits 3~2) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 57 -/// -fapi2::ReturnCode decoder_v1_0::num_rows_of_drams(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< NUM_ROWS_OF_DRAMS >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t RESERVED = 0b11; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - NUM_REGISTERS_USED.iv_byte, - l_field_bits, - "Failed bound check for number of rows of DRAMs on LRDIMM ") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Number of rows of DRAMs on LRDIMM : %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; - -} - -/// -/// @brief Decodes heat spreader solution -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 132 (Bit 7) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 58 -/// -fapi2::ReturnCode decoder_v1_0::heat_spreader_solution(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< HEAT_SPREADER_SOLUTION >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 1; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - HEAT_SPREADER_SOLUTION.iv_byte, - l_field_bits, - "Failed bound check for heat spreader solution") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Heat spreader solution: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes number of continuation codes -/// @param[out] o_output encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 133 (bit 6~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 58 -/// -fapi2::ReturnCode decoder_v1_0::num_continuation_codes(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< CONTINUATION_CODES >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 10; // JEP106AS spec - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - CONTINUATION_CODES.iv_byte, - l_field_bits, - "Failed bound check for number of continuation codes") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Number of continuation codes: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register manufacturer ID code -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 134 (bit 7~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 58 -/// -fapi2::ReturnCode decoder_v1_0::reg_manufacturer_id_code(uint8_t& o_output) const -{ - constexpr size_t BYTE_INDEX = 134; - uint8_t l_raw_byte = iv_spd_data[BYTE_INDEX]; - - // Trace in the front assists w/ debug - FAPI_INF("%s SPD data at Byte %d: 0x%llX.", - iv_target_str_storage, - BYTE_INDEX, - l_raw_byte); - - // All bits used for encoding, no bounds to check - o_output = l_raw_byte; - - FAPI_INF("%s. Register revision number: %d", - iv_target_str_storage, - o_output); - - return fapi2::FAPI2_RC_SUCCESS; -} - -/// -/// @brief Decodes register revision number -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 135 (bit 7~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 58 -/// -fapi2::ReturnCode decoder_v1_0::register_rev_num(uint8_t& o_output) const -{ - constexpr size_t BYTE_INDEX = 135; - uint8_t l_raw_byte = iv_spd_data[BYTE_INDEX]; - - // Trace in the front assists w/ debug - FAPI_INF("%s SPD data at Byte %d: 0x%llX.", - iv_target_str_storage, - BYTE_INDEX, - l_raw_byte); - - // All bits used for encoding, no bounds to check - o_output = l_raw_byte; - - FAPI_INF("%s. Register revision number: %d", - iv_target_str_storage, - o_output); - - return fapi2::FAPI2_RC_SUCCESS; -} - -/// -/// @brief Decodes address mapping from register to dram -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 136 (bit 0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 59 -/// -fapi2::ReturnCode decoder_v1_0::register_to_dram_addr_mapping(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< ADDR_MAPPING >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VAL = 1; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VAL, // extract sanity check - ADDR_MAPPING.iv_byte, - l_field_bits, - "Failed bound check for to register to dram addr mapping") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Address mapping from register to dram: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register output drive strength for CKE signal -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 137 (bit 1~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 60 -/// -fapi2::ReturnCode decoder_v1_0::cke_signal_output_driver(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< CKE_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t RESERVED = 3; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, // extract sanity check - CKE_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for CKE") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for CKE: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register output drive strength for ODT signal -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 137 (bit 3~2) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 60 -/// -fapi2::ReturnCode decoder_v1_0::odt_signal_output_driver(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< ODT_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t RESERVED = 3; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, // extract sanity check - ODT_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for ODT") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for ODT: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register output drive strength for command/address (CA) signal -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 137 (bit 5~4) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 60 -/// -fapi2::ReturnCode decoder_v1_0::ca_signal_output_driver(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< CA_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t INVALID_VAL = 4; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < INVALID_VAL, // extract sanity check - CA_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for CA") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for CA: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register output drive strength for control signal (CS) signal -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 137 (bit 6~7) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 60 -/// -fapi2::ReturnCode decoder_v1_0::cs_signal_output_driver(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< CS_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t RESERVED = 3; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, // extract sanity check - CS_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for CS") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for CS: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register output drive strength for clock (B side) -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 138 (bit 1~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 60 -/// -fapi2::ReturnCode decoder_v1_0::b_side_clk_output_driver(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< B_SIDE_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t RESERVED = 3; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, // extract sanity check - B_SIDE_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for clock (Y0,Y2)") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for clock (Y0,Y2): %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes register output drive strength for clock (A side) -/// @param[out] o_output drive strength encoding from SPD -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 138 (bit 3~2) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 60 -/// -fapi2::ReturnCode decoder_v1_0::a_side_clk_output_driver(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< A_SIDE_DRIVE_STRENGTH >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t RESERVED = 3; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - A_SIDE_DRIVE_STRENGTH.iv_byte, - l_field_bits, - "Failed bounds check for Register Output Driver for clock (Y1,Y3)") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. Register Output Driver for clock (Y1,Y3): %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes data buffer revision number -/// @param[out] o_output revision number -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 139 (Bits 7~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 60 -/// -fapi2::ReturnCode decoder_v1_0::data_buffer_rev(uint8_t& o_output) const -{ - // Extracting desired bits - constexpr size_t BYTE_INDEX = 139; - const uint8_t l_raw_byte = iv_spd_data[BYTE_INDEX]; - - // Trace in the front assists w/ debug - FAPI_INF("%s SPD data at Byte %d: 0x%llX.", - iv_target_str_storage, - BYTE_INDEX, - l_raw_byte); - - // This checks JEDEC range is met - constexpr size_t UNDEFINED = 0xFF; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_raw_byte != UNDEFINED, - BYTE_INDEX, - l_raw_byte, - "Failed bounds check for data buffer revision number") ); - - // Update output only if check passes - o_output = l_raw_byte; - - FAPI_INF("%s. Data buffer rev: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; - -} - -/// -/// @brief Decodes DRAM VrefDQ for Package Rank 0 -/// @param[out] o_output encoding of MR6 A5:A0 in JESD790-4 spec -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 140 (Bits 5~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 61 -/// -fapi2::ReturnCode decoder_v1_0::dram_vref_dq_rank0(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< VREF_DQ_RANK0 >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // JESD79-4 specification - constexpr size_t RESERVED = 0b110011; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - VREF_DQ_RANK0.iv_byte, - l_field_bits, - "Failed bounds check for DRAM VrefDQ for Package Rank 0") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM VrefDQ for Package Rank 0: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM VrefDQ for Package Rank 1 -/// @param[out] o_output encoding of MR6 A5:A0 in JESD790-4 spec -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 141 (Bits 5~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 61 -/// -fapi2::ReturnCode decoder_v1_0::dram_vref_dq_rank1(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< VREF_DQ_RANK1 >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // JESD79-4 specification - constexpr size_t RESERVED = 0b110011; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - VREF_DQ_RANK1.iv_byte, - l_field_bits, - "Failed bounds check for DRAM VrefDQ for Package Rank 1") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM VrefDQ for Package Rank 1: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM VrefDQ for Package Rank 2 -/// @param[out] o_output encoding of MR6 A5:A0 in JESD790-4 spec -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 142 (Bits 5~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 61 -/// -fapi2::ReturnCode decoder_v1_0::dram_vref_dq_rank2(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< VREF_DQ_RANK2 >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // JESD79-4 specification - constexpr size_t RESERVED = 0b110011; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - VREF_DQ_RANK2.iv_byte, - l_field_bits, - "Failed bounds check for DRAM VrefDQ for Package Rank 2") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM VrefDQ for Package Rank 2: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM VrefDQ for Package Rank 3 -/// @param[out] o_output encoding of MR6 A5:A0 in JESD790-4 spec -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 143 (Bits 5~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 4 -/// @note Page 4.1.2.12.2 - 61 -/// -fapi2::ReturnCode decoder_v1_0::dram_vref_dq_rank3(uint8_t& o_output) const -{ - // Extracting desired bits - const uint8_t l_field_bits = extract_spd_field< VREF_DQ_RANK3 >(iv_target, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // JESD79-4 specification - constexpr size_t RESERVED = 0b110011; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - VREF_DQ_RANK3.iv_byte, - l_field_bits, - "Failed bounds check for DRAM VrefDQ for Package Rank 3") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM VrefDQ for Package Rank 3: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes data buffer VrefDQ for DRAM interface -/// @param[out] o_output encoding of F5BC6x in DDR4DB01 spec -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 144 (Bits 5~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 61 -/// -fapi2::ReturnCode decoder_v1_0::data_buffer_vref_dq(uint8_t& o_output) const -{ - constexpr size_t BYTE_INDEX = 144; - uint8_t l_raw_data = iv_spd_data[BYTE_INDEX]; - - // Trace in the front assists w/ debug - FAPI_INF("%s SPD data at Byte %d: 0x%llX.", - iv_target_str_storage, - BYTE_INDEX, - l_raw_data); - - // DDR4DB01 spec - constexpr size_t RESERVED = 0b00110011; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_raw_data < RESERVED, - BYTE_INDEX, - l_raw_data, - "Failed bounds check for data buffer VrefDQ for DRAM interface") ); - - // Update output only if check passes - o_output = l_raw_data; - - FAPI_INF("%s. Data buffer VrefDQ for DRAM interface: %d", - iv_target_str_storage, - o_output); - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM interface MDQ Drive Strenth -/// of the data buffer component for a particular dimm speed -/// @param[in] i_dimm_speed the dimm speed in MT/s -/// @param[out] o_output encoding of F5BC6x in -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 145 - 147 (Bits 6~4) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 62 -/// -fapi2::ReturnCode decoder_v1_0::data_buffer_mdq_drive_strength(const uint64_t i_dimm_speed, uint8_t& o_output) const -{ - uint8_t l_byte = 0; - - FAPI_TRY( mdq_helper(i_dimm_speed, l_byte) ); - - { - constexpr size_t START = 1; - constexpr size_t LEN = 3; - const field_t MDQ_DRIVE_STRENGTH(l_byte, START, LEN); - - const uint8_t l_field_bits = extract_spd_field( iv_target, MDQ_DRIVE_STRENGTH, iv_spd_data ); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // Lets make sure we aren't being set to a reserved field - bool is_reserved_bit = false; - - switch(l_field_bits) - { - case 0b011: - case 0b100: - case 0b110: - case 0b111: - is_reserved_bit = true; - break; - - default: - is_reserved_bit = false; - break; - } - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 7; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - (l_field_bits <= MAX_VALID_VALUE) && - (is_reserved_bit != true), - l_byte, - l_field_bits, - "Failed bounds check for DRAM interface MDQ Drive Strenth") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM interface MDQ Drive Strenth: %d", - iv_target_str_storage, - o_output); - } - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM interface MDQ read termination strength -/// of the data buffer component for a particular dimm speed -/// @param[in] i_dimm_speed the dimm speed in MT/s -/// @param[out] o_output encoding of F5BC6x in -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 145 - 147 (Bits 2~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 62 -/// -fapi2::ReturnCode decoder_v1_0::data_buffer_mdq_rtt(const uint64_t i_dimm_speed, uint8_t& o_output) const -{ - uint8_t l_byte = 0; - - FAPI_TRY( mdq_helper(i_dimm_speed, l_byte) ); - - { - constexpr size_t START = 1; - constexpr size_t LEN = 3; - const field_t DATA_BUFFER_MDQ_RTT(l_byte, START, LEN); - - const uint8_t l_field_bits = extract_spd_field( iv_target, DATA_BUFFER_MDQ_RTT, iv_spd_data ); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 7; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - l_byte, - l_field_bits, - "Failed bounds check for DRAM interface MDQ RTT:") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM interface MDQ RTT: %d", - iv_target_str_storage, - o_output); - } -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM drive strenth -/// for a particular dimm speed -/// @param[in] i_dimm_speed the dimm speed in MT/s -/// @param[out] o_output DRAM drive strength (encoding) -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 148 (Bits 5~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 63 -/// -fapi2::ReturnCode decoder_v1_0::dram_drive_strength(const uint64_t i_dimm_speed, uint8_t& o_output) const -{ - size_t l_start = 0; - FAPI_TRY( drive_strength_start_bit_finder(i_dimm_speed, l_start) ); - - { - constexpr size_t BYTE_INDEX = 148; - constexpr size_t LEN = 2; - const field_t DRAM_DRIVE_STRENGTH(BYTE_INDEX, l_start, LEN); - - const uint8_t l_field_bits = extract_spd_field( iv_target, DRAM_DRIVE_STRENGTH, iv_spd_data ); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // SPD JEDEC specification - constexpr size_t RESERVED = 0b11; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits < RESERVED, - BYTE_INDEX, - l_field_bits, - "Failed bounds check for DRAM VrefDQ for Package Rank 3") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM drive strenth: %d", - iv_target_str_storage, - o_output); - } - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM ODT for RTT_NOM -/// for a particular dimm speed -/// @param[in] i_dimm_speed the dimm speed in MT/s -/// @param[out] o_output ODT termination strength (encoding) -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 149 - 151 (Bits 2~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - (64 - 65) -/// -fapi2::ReturnCode decoder_v1_0::dram_rtt_nom(const uint64_t i_dimm_speed, uint8_t& o_output) const -{ - size_t l_byte = 0; - FAPI_TRY( rtt_wr_and_nom_byte_finder(i_dimm_speed, l_byte) ); - - { - constexpr size_t START = 5; - constexpr size_t LEN = 3; - const field_t DRAM_RTT_NOM(l_byte, START, LEN); - - const uint8_t l_field_bits = extract_spd_field(iv_target, DRAM_RTT_NOM, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 7; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - l_byte, - l_field_bits, - "Failed bounds check for DRAM RTT_NOM") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM RTT_NOM: %d", - iv_target_str_storage, - o_output); - } - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM ODT for RTT_WR -/// for a particular dimm speed -/// @param[in] i_dimm_speed the dimm speed in MT/s -/// @param[out] o_output ODT termination strength (encoding) -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 149 - 151 (Bits 5~3) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - (64 - 65) -/// -fapi2::ReturnCode decoder_v1_0::dram_rtt_wr(const uint64_t i_dimm_speed, uint8_t& o_output) const -{ - size_t l_byte = 0; - FAPI_TRY( rtt_wr_and_nom_byte_finder(i_dimm_speed, l_byte) ); - - { - constexpr size_t START = 2; - constexpr size_t LEN = 3; - const field_t DRAM_RTT_WR(l_byte, START, LEN); - - const uint8_t l_field_bits = extract_spd_field(iv_target, DRAM_RTT_WR, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // Lets make sure we aren't being set to a reserved field - bool is_reserved_bit = false; - - switch(l_field_bits) - { - case 0b101: - case 0b110: - case 0b111: - is_reserved_bit = true; - break; - - default: - is_reserved_bit = false; - break; - } - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 7; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - (l_field_bits <= MAX_VALID_VALUE) && - (is_reserved_bit != true), - l_byte, - l_field_bits, - "Failed bounds check for DRAM RTT_WR") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM_RTT_WR: %d", - iv_target_str_storage, - o_output); - } - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM ODT for RTT_PARK, package ranks 0 & 1 -/// for a particular dimm speed -/// @param[in] i_dimm_speed the dimm speed in MT/s -/// @param[out] o_output ODT termination strength (encoding) -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 152 - 154 (Bits 2~0) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 65 -/// -fapi2::ReturnCode decoder_v1_0::dram_rtt_park_ranks0_1(const uint64_t i_dimm_speed, uint8_t& o_output) const -{ - size_t l_byte = 0; - FAPI_TRY( rtt_park_byte_finder(i_dimm_speed, l_byte) ); - - { - constexpr size_t START = 5; - constexpr size_t LEN = 3; - const field_t DRAM_RTT_PARK(l_byte, START, LEN); - - const uint8_t l_field_bits = extract_spd_field(iv_target, DRAM_RTT_PARK, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 7; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - l_byte, - l_field_bits, - "Failed bounds check for DRAM RTT_PARK (package ranks 0,1)") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM RTT_PARK (package ranks 0,1): %d", - iv_target_str_storage, - o_output); - } - -fapi_try_exit: - return fapi2::current_err; -} - -/// -/// @brief Decodes DRAM ODT for RTT_PARK, package ranks 2 & 3 -/// for a particular dimm speed -/// @param[in] i_dimm_speed the dimm speed in MT/s -/// @param[out] o_output ODT termination strength (encoding) -/// @return FAPI2_RC_SUCCESS if okay -/// @note SPD Byte 152 - 154 (Bits 5~3) -/// @note Item JEDEC Standard No. 21-C -/// @note DDR4 SPD Document Release 2 -/// @note Page 4.1.2.12.2 - 65 -/// -fapi2::ReturnCode decoder_v1_0::dram_rtt_park_ranks2_3(const uint64_t i_dimm_speed, uint8_t& o_output) const -{ - size_t l_byte = 0; - FAPI_TRY( rtt_park_byte_finder(i_dimm_speed, l_byte) ); - - { - constexpr size_t START = 2; - constexpr size_t LEN = 3; - const field_t DRAM_RTT_PARK(l_byte, START, LEN); - - const uint8_t l_field_bits = extract_spd_field(iv_target, DRAM_RTT_PARK, iv_spd_data); - FAPI_INF("%s Field Bits value: %d", iv_target_str_storage, l_field_bits); - - // This checks my extracting params returns a value within bound - constexpr size_t MAX_VALID_VALUE = 7; - - FAPI_TRY( mss::check::spd::fail_for_invalid_value(iv_target, - l_field_bits <= MAX_VALID_VALUE, - l_byte, - l_field_bits, - "Failed bounds check for DRAM RTT_PARK (package ranks 2,3)") ); - - // Update output only if check passes - o_output = l_field_bits; - - FAPI_INF("%s. DRAM RTT_PARK (package ranks 2,3): %d", - iv_target_str_storage, - o_output); - } - -fapi_try_exit: - return fapi2::current_err; -} - -}// lrdimm -}// ddr4 -}// spd -}// mss |
