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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/trace/runtime/rt_rsvdtracebufservice.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2019 */
/* [+] 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 */
#include "rt_rsvdtracebufservice.H"
#include <trace/compdesc.H> // ComponentDes
#include <trace/entry.H> // Entry
#include <util/runtime/util_rt.H> // hb_get_rt_rsvd_mem
#include <errl/errlmanager.H> // errlCommit
#include <runtime/interface.h> // g_hostInterfaces, postInitCalls_t
#include <runtime/runtime_reasoncodes.H> // RUNTIME::MOD_INIT_RT_RES_MEM_TRACE_BUF
namespace TRACE
{
/**
* ctor
*/
RsvdTraceBufService::RsvdTraceBufService( )
: iv_errl(nullptr)
{
}
/**
* init
*/
void RsvdTraceBufService::init()
{
g_hostInterfaces->puts( " >> RsvdTraceBufService::init\n");
// Get the size and location of the reserved trace buffer section
uint64_t l_bufferSize(0);
uint64_t l_reservedMemory = hb_get_rt_rsvd_mem(Util::HBRT_MEM_LABEL_TRACEBUF,
0, l_bufferSize);
// The first part of buffer is where the head of a link list will reside.
// It needs to reside here so if we go down in flames, we can pick
// up where we left off
if ( (l_reservedMemory != 0) && (l_bufferSize > sizeof(uintptr_t)) )
{
// Get a pointer to where the head of the data is
uintptr_t *l_addressToHead =
reinterpret_cast<uintptr_t *>(l_reservedMemory);
// The RsvdTraceBuffer is only concerned with the part of the buffer
// that it will maintain. Therefore, send the buffer size minus the
// size of an uintptr_t which is set aside for the first entry of the
// buffer. Then add the size of an uintptr_t to the l_reservedMemory
// (the beginning address of buffer) to get the beginning address of
// which the RsvdTraceBuffer will be responsible for.
iv_rsvdTraceBuffer.init(l_bufferSize - sizeof(uintptr_t),
l_reservedMemory + sizeof(uintptr_t),
l_addressToHead);
//----------
// There is a problem with saving pointers in the trace entry
// Removing this temporarily until a solution is found
//----------
// If the data is not NULL, then retrieve crashed data
// I want NULL in this case, not nullptr; *l_addressToHead is an int.
// If I use nullptr; compiler complains
//if (*l_addressToHead != NULL)
//{
// retrieveDataFromLastCrash();
//}
// After gathering trace info from previous crash, clear buffer data
iv_rsvdTraceBuffer.clearBuffer();
}
g_hostInterfaces->puts(" << RsvdTraceBufService::init\n");
}
/**
* retrieveDataFromLastCrash
*/
void RsvdTraceBufService::retrieveDataFromLastCrash()
{
g_hostInterfaces->puts(
" >> RsvdTraceBufService::retrieveDataFromLastCrash\n");
/*@
* @errortype ERRL_SEV_INFORMATIONAL
* @moduleid RUNTIME::MOD_INIT_RT_RES_MEM_TRACE_BUF
* @reasoncode RUNTIME::RC_RT_RES_TRACE_BUF_DUMPED
* @userdata1 unused
* @userdata2 unused
* @devdesc Copy of trace buffer from previous HBRT run
* @custdesc Informational log containing historic data
*/
iv_errl = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_INFORMATIONAL,
RUNTIME::MOD_INIT_RT_RES_MEM_TRACE_BUF,
RUNTIME::RC_RT_RES_TRACE_BUF_DUMPED,
0,0,true);
// Note: Set the iv_rsvdTraceBuffer before calling collectTrace()
iv_errl->collectTrace("RSVD_MEM_TRACE",0);
// Can not commit the errl until the ErrlManager gets initialized.
// Committing will be done in commitRsvdMemTraceErrl() after
// ErrlManager gets initialized
g_hostInterfaces->puts(
" << RsvdTraceBufService::retrieveDataFromLastCrash\n");
}
/**
* commitRsvdMemTraceErrl
*/
bool RsvdTraceBufService::commitRsvdMemTraceErrl()
{
g_hostInterfaces->puts(" >> RsvdTraceBufService::commitRsvdMemTraceErrl\n");
bool l_errlCommitted = false;
// Commit the iv_errl, if valid
if (iv_errl)
{
errlCommit(iv_errl, RUNTIME_COMP_ID);
l_errlCommitted = true;
}
g_hostInterfaces->puts(" << RsvdTraceBufService::commitRsvdMemTraceErrl\n");
return l_errlCommitted;
}
/**
* writeEntry
*/
void RsvdTraceBufService::writeEntry(ComponentDesc* i_componentDesc,
char* i_data,
uint32_t i_dataSize)
{
// Sanity check, make sure user passed in legit data
if ((nullptr != i_componentDesc) && (nullptr != i_data) && (i_dataSize > 0))
{
// Add an entry into the reserved trace buffer
Entry* l_entry = iv_rsvdTraceBuffer.insertEntry(i_dataSize);
if (nullptr != l_entry)
{
// Assign the component description and entry size.
l_entry->comp = i_componentDesc;
l_entry->size = i_dataSize;
//copy the contents in to the entry's data section
memcpy(&l_entry->data[0], i_data, i_dataSize);
// "Commit" entry to buffer.
l_entry->committed = 1;
}
}
}
/**
* getBuffer
*/
uint32_t RsvdTraceBufService::getBuffer(void* o_data, uint32_t i_dataSize) const
{
return iv_rsvdTraceBuffer.getTrace(o_data, i_dataSize);
}
} //end of namespace
/**
* initRsvdTraceBufService
*/
void initRsvdTraceBufService()
{
g_hostInterfaces->puts(" >> RsvdTraceBufService::initRsvdTraceBufService\n");
//get the reserved memory and initialize
Singleton<TRACE::RsvdTraceBufService>::instance().init();
g_hostInterfaces->puts(" << RsvdTraceBufService::initRsvdTraceBufService\n");
}
/**
* commitRsvdTraceBufErrl
*/
void commitRsvdTraceBufErrl()
{
g_hostInterfaces->puts(" >> RsvdTraceBufService::commitRsvdTraceBufErrl\n");
// Commit the errl with traces from previous boot, if buffer is valid
Singleton<TRACE::RsvdTraceBufService>::instance().commitRsvdMemTraceErrl();
g_hostInterfaces->puts(" << RsvdTraceBufService::commitRsvdTraceBufErrl\n");
}
struct register_initRsvdTraceBufService
{
register_initRsvdTraceBufService()
{
// Register interface for Host to call
postInitCalls_t * rt_post = getPostInitCalls();
rt_post->callInitRsvdTraceBufService = &initRsvdTraceBufService;
rt_post->callCommitRsvdTraceBufErrl = &commitRsvdTraceBufErrl;
}
};
//create a global object to force initialize the Service & RsvdTraceBufService objects
register_initRsvdTraceBufService g_register_initRsvdTraceBufService;
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