extensions/openpower-pels/sbe_ffdc_handler.cpp - openbmc/phosphor-logging - Gitiles

 /**
  * Copyright © 2021 IBM Corporation
  *
  * 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.
  */

 extern "C"
 {
 #include <libpdbg.h>
 }

 #include "fapi_data_process.hpp"
 #include "pel.hpp"
 #include "sbe_ffdc_handler.hpp"
 #include "temporary_file.hpp"

 #include <ekb/hwpf/fapi2/include/return_code_defs.H>
 #include <fmt/format.h>
 #include <libekb.H>

 #include <phosphor-logging/log.hpp>

 #include <new>

 namespace openpower
 {
 namespace pels
 {
 namespace sbe
 {

 using namespace phosphor::logging;

 SbeFFDC::SbeFFDC(const AdditionalData& aData, const PelFFDC& files) :
     ffdcType(FFDC_TYPE_NONE)
 {
     log<level::INFO>("SBE FFDC processing requested");

     // SRC6 field in the additional data contains Processor position
     // associated to the SBE FFDC
     //"[0:15] chip position"
     auto src6 = aData.getValue("SRC6");
     if (src6 == std::nullopt)
     {
         log<level::ERR>("Fail to extract SRC6 data: failing to get proc index");
         return;
     }
     try
     {
         procPos = (std::stoi(src6.value()) & 0xFFFF0000) >> 16;
     }
     catch (const std::exception& err)
     {
         log<level::ERR>(
             fmt::format("Conversion failure errormsg({})", err.what()).c_str());
         return;
     }

     if (files.empty())
     {
         log<level::INFO>("SbeFFDC : No files found, skipping ffdc processing");
         return;
     }

     for (const auto& file : files)
     {
         if ((file.format == UserDataFormat::custom) &&
             (file.subType == sbeFFDCSubType))
         {
             // Process SBE file.
             parse(file.fd);
         }
     }
 }

 void SbeFFDC::parse(int fd)
 {
     log<level::INFO>(
         fmt::format("SBE FFDC file fd:({}), parsing started", fd).c_str());

     uint32_t ffdcBufOffset = 0;
     uint32_t pktCount = 0;
     sbeFfdcPacketType ffdcPkt;

     // get SBE FFDC data.
     auto ffdcData = util::readFD(fd);
     if (ffdcData.empty())
     {
         log<level::ERR>(
             fmt::format("Empty SBE FFDC file fd:({}), skipping", fd).c_str());
         return;
     }

     while ((ffdcBufOffset < ffdcData.size()) && (sbeMaxFfdcPackets != pktCount))
     {
         // Next un-extracted FFDC Packet
         fapiFfdcBufType* ffdc =
             reinterpret_cast<fapiFfdcBufType*>(ffdcData.data() + ffdcBufOffset);
         auto magicBytes = ntohs(ffdc->magic_bytes);
         auto lenWords = ntohs(ffdc->lengthinWords);
         auto fapiRc = ntohl(ffdc->fapiRc);

         auto msg = fmt::format("FFDC magic: {} length in words:{} Fapirc:{}",
                                magicBytes, lenWords, fapiRc);
         log<level::INFO>(msg.c_str());

         if (magicBytes != ffdcMagicCode)
         {
             log<level::ERR>("Invalid FFDC magic code in Header: Skipping ");
             return;
         }
         ffdcPkt.fapiRc = fapiRc;
         // Not interested in the first 2 words (these are not ffdc)
         auto pktLenWords = lenWords - (2 * ffdcPkgOneWord);
         ffdcPkt.ffdcLengthInWords = pktLenWords;
         if (pktLenWords)
         {
             // Memory freeing will be taking care by ffdcPkt structure
             // destructor
             ffdcPkt.ffdcData = new uint32_t[pktLenWords];
             memcpy(ffdcPkt.ffdcData,
                    ((reinterpret_cast<uint32_t*>(ffdc)) +
                     (2 * ffdcPkgOneWord)), // skip first 2 words
                    (pktLenWords * sizeof(uint32_t)));
         }
         else
         {
             log<level::ERR>("FFDC packet size is zero skipping");
             return;
         }

         // SBE FFDC processing is not required for SBE Plat errors RCs.
         // Plat errors processing is driven by SBE provided user data
         // plugins, which need to link with PEL tool infrastructure.
         if (ffdcPkt.fapiRc != fapi2::FAPI2_RC_PLAT_ERR_SEE_DATA)
         {
             process(ffdcPkt);
         }
         else
         {
             log<level::INFO>("SBE FFDC: Internal FFDC packet");
         }

         // Update Buffer offset in Bytes
         ffdcBufOffset += lenWords * sizeof(uint32_t);
         ++pktCount;
     }
     if (pktCount == sbeMaxFfdcPackets)
     {
         log<level::ERR>(fmt::format("Received more than the limit of ({})"
                                     " FFDC packets, processing only ({})",
                                     sbeMaxFfdcPackets, pktCount)
                             .c_str());
     }
 }

 void SbeFFDC::process(const sbeFfdcPacketType& ffdcPkt)
 {
     using json = nlohmann::json;

     // formated FFDC data structure after FFDC packet processing
     FFDC ffdc;

     if (!pdbg_targets_init(NULL))
     {
         log<level::ERR>("pdbg_targets_init failed, skipping ffdc processing");
         return;
     }

     if (libekb_init())
     {
         log<level::ERR>("libekb_init failed, skipping ffdc processing");
         return;
     }

     try
     {
         // libekb provided wrapper function to convert SBE FFDC
         // in to known ffdc structure.
         libekb_get_sbe_ffdc(ffdc, ffdcPkt, procPos);
     }
     catch (...)
     {
         log<level::ERR>("libekb_get_sbe_ffdc failed, skipping ffdc processing");
         return;
     }

     // update FFDC type class membeir for hwp specific packet
     // Assumption SBE FFDC contains only one hwp FFDC packet.
     ffdcType = ffdc.ffdc_type;

     // To store callouts details in json format as per pel expectation.
     json pelJSONFmtCalloutDataList;
     pelJSONFmtCalloutDataList = json::array();

     // To store other user data from FFDC.
     openpower::pels::phal::FFDCData ffdcUserData;

     // Get FFDC and required info to include in PEL
     openpower::pels::phal::convertFAPItoPELformat(
         ffdc, pelJSONFmtCalloutDataList, ffdcUserData);

     // Get callout information and sore in to file.
     auto calloutData = pelJSONFmtCalloutDataList.dump();
     util::TemporaryFile ffdcFile(calloutData.c_str(), calloutData.size());

     // Create json callout type pel FFDC file structre.
     PelFFDCfile pf;
     pf.format = openpower::pels::UserDataFormat::json;
     pf.subType = openpower::pels::jsonCalloutSubtype;
     pf.version = 0x01;
     pf.fd = ffdcFile.getFd();
     ffdcFiles.push_back(pf);

     // save the file path to delete the file after usage.
     paths.push_back(ffdcFile.getPath());

     // Format ffdc user data and create new file.
     std::string data;
     for (auto& d : ffdcUserData)
     {
         data += d.first + " = " + d.second + "\n";
     }
     util::TemporaryFile pelDataFile(data.c_str(), data.size());
     PelFFDCfile pdf;
     pdf.format = openpower::pels::UserDataFormat::text;
     pdf.version = 0x01;
     pdf.fd = pelDataFile.getFd();
     pdf.subType = 0;
     ffdcFiles.push_back(pdf);

     paths.push_back(pelDataFile.getPath());
 }

 std::optional<LogSeverity> SbeFFDC::getSeverity()
 {
     if (ffdcType == FFDC_TYPE_SPARE_CLOCK_INFO)
     {
         log<level::INFO>(
             "Found spare clock error, changing severity to informational");
         return LogSeverity::Informational;
     }
     return std::nullopt;
 }

 } // namespace sbe
 } // namespace pels
 } // namespace openpower
	/**
	* Copyright © 2021 IBM Corporation
	*
	* 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.
	*/

	extern "C"
	{
	#include <libpdbg.h>
	}

	#include "fapi_data_process.hpp"
	#include "pel.hpp"
	#include "sbe_ffdc_handler.hpp"
	#include "temporary_file.hpp"

	#include <ekb/hwpf/fapi2/include/return_code_defs.H>
	#include <fmt/format.h>
	#include <libekb.H>

	#include <phosphor-logging/log.hpp>

	#include <new>

	namespace openpower
	{
	namespace pels
	{
	namespace sbe
	{

	using namespace phosphor::logging;

	SbeFFDC::SbeFFDC(const AdditionalData& aData, const PelFFDC& files) :
	ffdcType(FFDC_TYPE_NONE)
	{
	log<level::INFO>("SBE FFDC processing requested");

	// SRC6 field in the additional data contains Processor position
	// associated to the SBE FFDC
	//"[0:15] chip position"
	auto src6 = aData.getValue("SRC6");
	if (src6 == std::nullopt)
	{
	log<level::ERR>("Fail to extract SRC6 data: failing to get proc index");
	return;
	}
	try
	{
	procPos = (std::stoi(src6.value()) & 0xFFFF0000) >> 16;
	}
	catch (const std::exception& err)
	{
	log<level::ERR>(
	fmt::format("Conversion failure errormsg({})", err.what()).c_str());
	return;
	}

	if (files.empty())
	{
	log<level::INFO>("SbeFFDC : No files found, skipping ffdc processing");
	return;
	}

	for (const auto& file : files)
	{
	if ((file.format == UserDataFormat::custom) &&
	(file.subType == sbeFFDCSubType))
	{
	// Process SBE file.
	parse(file.fd);
	}
	}
	}

	void SbeFFDC::parse(int fd)
	{
	log<level::INFO>(
	fmt::format("SBE FFDC file fd:({}), parsing started", fd).c_str());

	uint32_t ffdcBufOffset = 0;
	uint32_t pktCount = 0;
	sbeFfdcPacketType ffdcPkt;

	// get SBE FFDC data.
	auto ffdcData = util::readFD(fd);
	if (ffdcData.empty())
	{
	log<level::ERR>(
	fmt::format("Empty SBE FFDC file fd:({}), skipping", fd).c_str());
	return;
	}

	while ((ffdcBufOffset < ffdcData.size()) && (sbeMaxFfdcPackets != pktCount))
	{
	// Next un-extracted FFDC Packet
	fapiFfdcBufType* ffdc =
	reinterpret_cast<fapiFfdcBufType*>(ffdcData.data() + ffdcBufOffset);
	auto magicBytes = ntohs(ffdc->magic_bytes);
	auto lenWords = ntohs(ffdc->lengthinWords);
	auto fapiRc = ntohl(ffdc->fapiRc);

	auto msg = fmt::format("FFDC magic: {} length in words:{} Fapirc:{}",
	magicBytes, lenWords, fapiRc);
	log<level::INFO>(msg.c_str());

	if (magicBytes != ffdcMagicCode)
	{
	log<level::ERR>("Invalid FFDC magic code in Header: Skipping ");
	return;
	}
	ffdcPkt.fapiRc = fapiRc;
	// Not interested in the first 2 words (these are not ffdc)
	auto pktLenWords = lenWords - (2 * ffdcPkgOneWord);
	ffdcPkt.ffdcLengthInWords = pktLenWords;
	if (pktLenWords)
	{
	// Memory freeing will be taking care by ffdcPkt structure
	// destructor
	ffdcPkt.ffdcData = new uint32_t[pktLenWords];
	memcpy(ffdcPkt.ffdcData,
	((reinterpret_cast<uint32_t*>(ffdc)) +
	(2 * ffdcPkgOneWord)), // skip first 2 words
	(pktLenWords * sizeof(uint32_t)));
	}
	else
	{
	log<level::ERR>("FFDC packet size is zero skipping");
	return;
	}

	// SBE FFDC processing is not required for SBE Plat errors RCs.
	// Plat errors processing is driven by SBE provided user data
	// plugins, which need to link with PEL tool infrastructure.
	if (ffdcPkt.fapiRc != fapi2::FAPI2_RC_PLAT_ERR_SEE_DATA)
	{
	process(ffdcPkt);
	}
	else
	{
	log<level::INFO>("SBE FFDC: Internal FFDC packet");
	}

	// Update Buffer offset in Bytes
	ffdcBufOffset += lenWords * sizeof(uint32_t);
	++pktCount;
	}
	if (pktCount == sbeMaxFfdcPackets)
	{
	log<level::ERR>(fmt::format("Received more than the limit of ({})"
	" FFDC packets, processing only ({})",
	sbeMaxFfdcPackets, pktCount)
	.c_str());
	}
	}

	void SbeFFDC::process(const sbeFfdcPacketType& ffdcPkt)
	{
	using json = nlohmann::json;

	// formated FFDC data structure after FFDC packet processing
	FFDC ffdc;

	if (!pdbg_targets_init(NULL))
	{
	log<level::ERR>("pdbg_targets_init failed, skipping ffdc processing");
	return;
	}

	if (libekb_init())
	{
	log<level::ERR>("libekb_init failed, skipping ffdc processing");
	return;
	}

	try
	{
	// libekb provided wrapper function to convert SBE FFDC
	// in to known ffdc structure.
	libekb_get_sbe_ffdc(ffdc, ffdcPkt, procPos);
	}
	catch (...)
	{
	log<level::ERR>("libekb_get_sbe_ffdc failed, skipping ffdc processing");
	return;
	}

	// update FFDC type class membeir for hwp specific packet
	// Assumption SBE FFDC contains only one hwp FFDC packet.
	ffdcType = ffdc.ffdc_type;

	// To store callouts details in json format as per pel expectation.
	json pelJSONFmtCalloutDataList;
	pelJSONFmtCalloutDataList = json::array();

	// To store other user data from FFDC.
	openpower::pels::phal::FFDCData ffdcUserData;

	// Get FFDC and required info to include in PEL
	openpower::pels::phal::convertFAPItoPELformat(
	ffdc, pelJSONFmtCalloutDataList, ffdcUserData);

	// Get callout information and sore in to file.
	auto calloutData = pelJSONFmtCalloutDataList.dump();
	util::TemporaryFile ffdcFile(calloutData.c_str(), calloutData.size());

	// Create json callout type pel FFDC file structre.
	PelFFDCfile pf;
	pf.format = openpower::pels::UserDataFormat::json;
	pf.subType = openpower::pels::jsonCalloutSubtype;
	pf.version = 0x01;
	pf.fd = ffdcFile.getFd();
	ffdcFiles.push_back(pf);

	// save the file path to delete the file after usage.
	paths.push_back(ffdcFile.getPath());

	// Format ffdc user data and create new file.
	std::string data;
	for (auto& d : ffdcUserData)
	{
	data += d.first + " = " + d.second + "\n";
	}
	util::TemporaryFile pelDataFile(data.c_str(), data.size());
	PelFFDCfile pdf;
	pdf.format = openpower::pels::UserDataFormat::text;
	pdf.version = 0x01;
	pdf.fd = pelDataFile.getFd();
	pdf.subType = 0;
	ffdcFiles.push_back(pdf);

	paths.push_back(pelDataFile.getPath());
	}

	std::optional<LogSeverity> SbeFFDC::getSeverity()
	{
	if (ffdcType == FFDC_TYPE_SPARE_CLOCK_INFO)
	{
	log<level::INFO>(
	"Found spare clock error, changing severity to informational");
	return LogSeverity::Informational;
	}
	return std::nullopt;
	}

	} // namespace sbe
	} // namespace pels
	} // namespace openpower