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|
// IBM_PROLOG_BEGIN_TAG
// This is an automatically generated prolog.
//
// $Source: src/usr/initservice/baseinitsvc/initservice.C $
//
// IBM CONFIDENTIAL
//
// COPYRIGHT International Business Machines Corp. 2011
//
// p1
//
// Object Code Only (OCO) source materials
// Licensed Internal Code Source Materials
// IBM HostBoot Licensed Internal Code
//
// The source code for this program is not published or other-
// wise divested of its trade secrets, irrespective of what has
// been deposited with the U.S. Copyright Office.
//
// Origin: 30
//
// IBM_PROLOG_END
/**
* @file initservice.C
*
* Implements Initialization Service for Host boot.
* See initservice.H for details
*
*/
#include <kernel/console.H>
#include <sys/vfs.h>
#include <vfs/vfs.H>
#include <sys/task.h>
#include <trace/interface.H>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <sys/sync.h>
#include "initservice.H"
#include "initsvctasks.H"
namespace INITSERVICE
{
trace_desc_t *g_trac_initsvc = NULL;
TRAC_INIT(&g_trac_initsvc, "INITSERVICE", 4096);
/******************************************************************************/
// InitService::getTheInstance return the only instance
/******************************************************************************/
InitService& InitService::getTheInstance()
{
return Singleton<InitService>::instance();
}
/******************************************************************************/
// InitService::Initservice constructor
/******************************************************************************/
InitService::InitService()
{
}
/******************************************************************************/
// InitService::~InitService destructor
/******************************************************************************/
InitService::~InitService()
{
}
errlHndl_t InitService::startTask( const TaskInfo *i_ptask,
TaskArgs::TaskArgs *io_pargs ) const
{
tid_t tidrc = 0;
errlHndl_t lo_errl = NULL;
assert(i_ptask->taskflags.task_type == START_TASK);
// Base modules have already been loaded and initialized,
// extended modules have not.
if(i_ptask->taskflags.module_type == EXT_IMAGE)
{
// load module and call _init()
lo_errl = VFS::module_load( i_ptask->taskname );
}
if( !lo_errl)
{
tidrc = task_exec( i_ptask->taskname, io_pargs ); // launch the child
if ( static_cast<int16_t>(tidrc) < 0 )
{
// task failed to launch, post an errorlog and dump some trace
/*@ errorlog tag
* @errortype ERRL_SEV_CRITICAL_SYS_TERM
* @moduleid see task list
* @reasoncode START_TASK_FAILED
* @userdata1 task id or task return code
* @userdata2 0
*
* @devdesc Initialization Service failed to start a task.
* The module id will identify the task.
*
*/
lo_errl = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_CRITICAL_SYS_TERM, // severity
i_ptask->taskflags.module_id, // moduleid
INITSERVICE::START_TASK_FAILED, // reason Code
tidrc, // user1 = tidrc
0
);
TRACDBIN( g_trac_initsvc,
"ERROR starting task:",
i_ptask->taskname,
strlen(i_ptask->taskname) );
TRACDCOMP( g_trac_initsvc,
"tidrc=%d, errlog p = %p" ,
(int16_t)tidrc, lo_errl );
} // endif tidrc
else
{
// task launched OK.
TRACDBIN( g_trac_initsvc,
"Task finished OK :",
i_ptask->taskname,
strlen(i_ptask->taskname) );
TRACDCOMP( g_trac_initsvc,
"task number %d, errlog p = %p",
tidrc, lo_errl );
if ( io_pargs )
{
io_pargs->waitParentSync(); // sync up childtask
}
}
}
// else module load failed. have error log
return lo_errl;
}
errlHndl_t InitService::executeFn( const TaskInfo *i_ptask,
TaskArgs *io_pargs ) const
{
tid_t tidrc = 0;
errlHndl_t lo_errl = NULL;
if ( i_ptask->taskfn == NULL )
{
TRACDBIN( g_trac_initsvc,
"ERROR: NULL function pointer:",
i_ptask->taskname,
strlen(i_ptask->taskname) );
/*@ errorlog tag
* @errortype ERRL_SEV_CRITICAL_SYS_TERM
* @moduleid see task list
* @reasoncode NULL_FN_PTR
* @userdata1 0
* @userdata2 0
*
* @devdesc Initialization Service attempted to start a
* function within a module but found a NULL pointer
* instead of the function.
* The module id will identify the task.
*/
lo_errl = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_CRITICAL_SYS_TERM, // severity
i_ptask->taskflags.module_id, // moduleid
INITSERVICE::NULL_FN_PTR, // reason Code
0,
0 );
// fall through to end and return bad error log
}
else
{
// valid function, launch it
tidrc = task_create( i_ptask->taskfn, io_pargs );
if ( static_cast<int16_t>(tidrc) < 0 )
{
/*@ errorlog tag
* @errortype ERRL_SEV_CRITICAL_SYS_TERM
* @moduleid see task list
* @reasoncode NULL_FN_PTR
* @userdata1 0
* @userdata2 0
*
* @devdesc Initialization Service attempted to start a
* function within a module but the function
* failed to launch
* The module id will identify the task.
*/
lo_errl = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_CRITICAL_SYS_TERM, // severity
i_ptask->taskflags.module_id, // moduleid
INITSERVICE::START_FN_FAILED, // reason Code
tidrc, // user1 = tidrc
0 );
TRACDBIN( g_trac_initsvc,
ENTER_MRK "ERROR starting function:",
i_ptask->taskname,
strlen(i_ptask->taskname) );
TRACDCOMP( g_trac_initsvc,
EXIT_MRK "tidrc=%d, errlog p = %p" ,
(int16_t)tidrc, lo_errl );
} // endif tidrc
else
{
TRACDBIN( g_trac_initsvc,
ENTER_MRK "function launched OK :",
i_ptask->taskname,
strlen(i_ptask->taskname) );
TRACDCOMP( g_trac_initsvc,
EXIT_MRK "task number %d, errlog p = %p",
tidrc, lo_errl );
// task launched OK.
if ( io_pargs )
{
io_pargs->waitParentSync(); // sync up parent task
}
}
} // end else
return lo_errl;
}
void InitService::reportError(errlHndl_t &io_rerrl ) const
{
if ( io_rerrl == NULL )
{
// this is OK, do nothing
}
else
{
TRACDCOMP( g_trac_initsvc,
"Committing the error log %p.",
io_rerrl );
errlCommit( io_rerrl );
}
}
/**
* @todo this will make a system call to post the error code.
*/
void InitService::setProgressCode( uint64_t i_progresscode ) const
{
// do nothing for now
}
/**
* @note For task_type = NONE case, I'm assuming that trace will not crash
* if we have a NULL taskname string, printing it is useful for debug.
*/
void InitService::init( void *i_ptr )
{
errlHndl_t errl = NULL; // steps will return an error handle if failure
uint64_t nextTask = 0;
const TaskInfo *ptask = NULL;
TaskArgs::TaskArgs args;
TRACFCOMP( g_trac_initsvc,
ENTER_MRK "Initialization Service is starting." );
// ----------------------------------------------------------------
// loop through the task list and start up any tasks necessary
// ----------------------------------------------------------------
for ( nextTask=0;
nextTask<INITSERVICE::MAX_TASKS;
nextTask++ )
{
// make a local copy of the base image task
ptask = &(g_taskinfolist[nextTask]);
if ( ptask->taskflags.task_type == END_TASK_LIST )
{
TRACDCOMP( g_trac_initsvc,
"End of Initialization Service task list.\n" );
break;
}
args.clear(); // clear args struct for next task
// dispatch tasks...
switch ( ptask->taskflags.task_type)
{
case NONE:
// task is a place holder, skip
TRACDBIN( g_trac_initsvc,
"task_type==NONE",
ptask->taskname,
strlen( ptask->taskname) );
break;
case START_TASK:
TRACDBIN( g_trac_initsvc,
"task_type==START_TASK",
ptask->taskname,
strlen( ptask->taskname) );
errl = startTask( ptask, // task struct
&args ); // args
break;
case START_FN:
TRACDCOMP( g_trac_initsvc,
"task_type==START_FN : %p",
ptask->taskfn );
errl = executeFn( ptask,
&args );
break;
case BARRIER:
TRACDCOMP( g_trac_initsvc,
"task_type==BARRIER" );
// $$TODO
break;
case UNINIT_TASK:
TRACDBIN( g_trac_initsvc,
"task_type=UNINIT_TASK : ",
ptask->taskname,
strlen(ptask->taskname) );
errl = VFS::module_unload( ptask->taskname );
break;
default:
TRACDCOMP( g_trac_initsvc,
"Invalid task_type %d: ",
ptask->taskflags.task_type );
/*@ errorlog tag
* @errortype ERRL_SEV_CRITICAL_SYS_TERM
* @moduleid BASE_INITSVC_ERRL_ID
* @reasoncode INVALID_TASK_TYPE
* @userdata1 task_type value
* @userdata2 0
*
* @devdesc Initialization Service found an invalid
* Task Type in the task list.
* The module id will identify the task.
* task_type value will be the invalid type.
*/
errl = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_CRITICAL_SYS_TERM, // severity
BASE_INITSVC_ERRL_ID, // moduleid
INVALID_TASK_TYPE, // reason Code
ptask->taskflags.task_type,
0 );
break;
} // endswitch
// report an error
reportError( errl );
if ( args.getReturnCode() != TASKARGS_UNDEFINED64 )
{
TRACFCOMP( g_trac_initsvc,
ERR_MRK "InitService TaskArgs returned 0x%llx, errlog=%p",
args.getReturnCode(),
args.getErrorLog()
);
errlHndl_t childerrl = args.getErrorLog(); // local copy
reportError( childerrl ); // report child error
}
} // endfor
// die if we drop out with an error
assert( errl == NULL);
TRACFCOMP( g_trac_initsvc,
EXIT_MRK "Initilization Service finished.");
// return to _start(), which may end the task or die.
}
} // namespace
|
