diff options
Diffstat (limited to 'src/usr/hwpf/hwp/chip_accessors/getTdpRdpCurrentFactor.C')
-rw-r--r-- | src/usr/hwpf/hwp/chip_accessors/getTdpRdpCurrentFactor.C | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/usr/hwpf/hwp/chip_accessors/getTdpRdpCurrentFactor.C b/src/usr/hwpf/hwp/chip_accessors/getTdpRdpCurrentFactor.C new file mode 100644 index 000000000..f7da05c85 --- /dev/null +++ b/src/usr/hwpf/hwp/chip_accessors/getTdpRdpCurrentFactor.C @@ -0,0 +1,142 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/usr/hwpf/hwp/chip_accessors/getTdpRdpCurrentFactor.C $ */ +/* */ +/* OpenPOWER HostBoot Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2015 */ +/* [+] 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 */ +// $Id: getTdpRdpCurrentFactor.C,v 1.6 2015/09/15 20:31:49 whs Exp $ +/** + * @file getTdpRdpCurrentFactor.C + * + * @brief Accessor for providing the ATTR_TDP_RDP_CURRENT_FACTOR attribute + * + */ + +#include <stdint.h> + +// fapi support +#include <fapi.H> +#include <fapiUtil.H> +#include <getTdpRdpCurrentFactor.H> + +extern "C" +{ +using namespace fapi; + +fapi::ReturnCode getTdpRdpCurrentFactor( + const fapi::Target &i_procTarget, + uint32_t & o_val) +{ + + const uint32_t DEFAULT_TDP_RDP_CURRENT_FACTOR = 9180; // 91.90% = 0x9180 + // IQ keyword layout + const uint8_t NUM_ENTRIES = 4; // The IQ keyword has 4 sub entries + const uint8_t TDP_RDP_ENTRY =0; // Array index for LRP9 Entry 1 + + struct iq_entry + { + uint8_t iv_MSB; // data in big endian format + uint8_t iv_LSB; + }; + struct iq_keyword + { + uint8_t iv_version; + iq_entry entry[NUM_ENTRIES]; + }; + + fapi::ReturnCode l_fapirc; + uint32_t l_tdpRdp = 0; + + FAPI_DBG("getTdpRdpCurrentFactor: entry"); + + do + { + // On WOF enabled systems, mvpd record LRP9 keyword IQ has the + // TDP RDP current factor. LRP9 is not present for Murano processors + // and is present, but not defined as TDP RPD current factor on other + // Venice processors. + // Only look for TDP RPD current factor in vpd for WOF enabled systems. + + // See if WOF enabled + uint8_t l_WofEnabled = ENUM_ATTR_WOF_ENABLED_DISABLED; + l_fapirc = FAPI_ATTR_GET(ATTR_WOF_ENABLED,NULL,l_WofEnabled); + if ( l_fapirc ) + { + FAPI_IMP("getTdpRdpCurrentFactor: get ATTR_WOF_ENABLED failed, " + "rc=0x%08x", + static_cast<uint32_t>(l_fapirc)); + break; // return with error. Unexpected. + } + else if (ENUM_ATTR_WOF_ENABLED_DISABLED == l_WofEnabled) + { + break; // not a WOF enabled system. Return with 0 value. No error. + } + + // Read TDP RDP current factor from LRP9 IQ keyword. + // Expected to be present on WOF enabled system. + iq_keyword l_iqKeyword = {0,{{0}}}; + uint32_t l_bufsize = sizeof(l_iqKeyword); + + l_fapirc = fapiGetMvpdField(MVPD_RECORD_LRP9, + MVPD_KEYWORD_IQ, + i_procTarget, + (uint8_t*)(&l_iqKeyword), + l_bufsize ); + if ( l_fapirc ) + { + FAPI_IMP("getTdpRdpCurrentFactor: get LRP9 IQ failed, " + "rc=0x%08x", + static_cast<uint32_t>(l_fapirc)); + break; // return with error + } + if (l_bufsize < sizeof(l_iqKeyword)) //ensure expected data retured + { + FAPI_ERR("getTdpRdpCurrentFacto:" + " less IQ keyword returned than expected %d < %d, " + " use default", + l_bufsize, sizeof(l_iqKeyword)); + const uint32_t & KEYWORD = fapi::MVPD_KEYWORD_IQ; + const uint32_t & RETURNED_SIZE = l_bufsize; + const uint32_t & EXPECTED_SIZE = sizeof(l_iqKeyword); + const fapi::Target & CHIP_TARGET = i_procTarget; + FAPI_SET_HWP_ERROR(l_fapirc, RC_INSUFFICIENT_VPD_RETURNED ); + break; // return with error. Unexpected. + } + // get TDP RDP current factor endian safe + l_tdpRdp = l_iqKeyword.entry[TDP_RDP_ENTRY].iv_LSB; + l_tdpRdp |= (l_iqKeyword.entry[TDP_RDP_ENTRY].iv_MSB<<8); + FAPI_DBG("getTdpRdpCurrentFactor: LRP9 IQ value=%d",l_tdpRdp); + + // use default if value not filled in by mfg + if (!l_tdpRdp) + { + l_tdpRdp = DEFAULT_TDP_RDP_CURRENT_FACTOR; + FAPI_IMP("getTdpRdpCurrentFactor: use default value=%d",l_tdpRdp); + } + } while (0); + + // return value + o_val = l_tdpRdp; + + return l_fapirc; +} + +} // extern "C" |