/*
* Set Overflow
*
* This is commented out in BG/L/P - need to explore and complete...
* However, with true 64-bit counters in BG/Q and all counters for PAPI
* always starting from a true zero (we don't allow write...), the possibility
* for overflow is remote at best...
*/
int
IOUNIT_set_overflow( EventSetInfo_t * ESI, int EventIndex, int threshold )
{
#ifdef DEBUG_BGQ
printf("BEGIN IOUNIT_set_overflow\n");
#endif
IOUNIT_control_state_t * this_state = ( IOUNIT_control_state_t * ) ESI->ctl_state;
int retval;
int evt_idx;
uint64_t threshold_for_bgpm;
/* convert threadhold value assigned by PAPI user to value that is
* programmed into the counter. This value is required by Bgpm_SetOverflow() */
threshold_for_bgpm = BGPM_PERIOD2THRES( threshold );
evt_idx = ESI->EventInfoArray[EventIndex].pos[0];
SUBDBG( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
evt_idx, EventIndex, threshold );
#ifdef DEBUG_BGQ
printf( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
evt_idx, EventIndex, threshold );
#endif
/* If this counter isn't set to overflow, it's an error */
if ( threshold == 0 ) {
/* Remove the signal handler */
retval = _papi_hwi_stop_signal( _IOunit_vector.cmp_info.hardware_intr_sig );
if ( retval != PAPI_OK )
return ( retval );
}
else {
#ifdef DEBUG_BGQ
printf( "IOUNIT_set_overflow: Enable the signal handler\n" );
#endif
/* Enable the signal handler */
retval = _papi_hwi_start_signal( _IOunit_vector.cmp_info.hardware_intr_sig,
NEED_CONTEXT,
_IOunit_vector.cmp_info.CmpIdx );
if ( retval != PAPI_OK )
return ( retval );
retval = Bgpm_SetOverflow( this_state->EventGroup,
evt_idx,
threshold_for_bgpm );
CHECK_BGPM_ERROR( retval, "Bgpm_SetOverflow" );
retval = Bgpm_SetEventUser1( this_state->EventGroup,
evt_idx,
1024 );
CHECK_BGPM_ERROR( retval, "Bgpm_SetEventUser1" );
/* user signal handler for overflow case */
retval = Bgpm_SetOverflowHandler( this_state->EventGroup, user_signal_handler_IOUNIT );
CHECK_BGPM_ERROR( retval, "Bgpm_SetOverflowHandler" );
}
return ( PAPI_OK );
}
/*
* Set Overflow
*
* This is commented out in BG/L/P - need to explore and complete...
* However, with true 64-bit counters in BG/Q and all counters for PAPI
* always starting from a true zero (we don't allow write...), the possibility
* for overflow is remote at best...
*/
int
IOUNIT_set_overflow( EventSetInfo_t * ESI, int EventIndex, int threshold )
{
#ifdef DEBUG_BGQ
printf("BEGIN IOUNIT_set_overflow\n");
#endif
IOUNIT_control_state_t * this_state = ( IOUNIT_control_state_t * ) ESI->ctl_state;
int retval;
int evt_idx;
evt_idx = ESI->EventInfoArray[EventIndex].pos[0];
SUBDBG( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
evt_idx, EventIndex, threshold );
#ifdef DEBUG_BGQ
printf( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
evt_idx, EventIndex, threshold );
#endif
/* If this counter isn't set to overflow, it's an error */
if ( threshold == 0 ) {
/* Remove the signal handler */
retval = _papi_hwi_stop_signal( _IOunit_vector.cmp_info.hardware_intr_sig );
if ( retval != PAPI_OK )
return ( retval );
}
else {
this_state->overflow = 1;
this_state->overflow_count++;
this_state->overflow_list[this_state->overflow_count-1].threshold = threshold;
this_state->overflow_list[this_state->overflow_count-1].EventIndex = evt_idx;
#ifdef DEBUG_BGQ
printf( "IOUNIT_set_overflow: Enable the signal handler\n" );
#endif
/* Enable the signal handler */
retval = _papi_hwi_start_signal( _IOunit_vector.cmp_info.hardware_intr_sig,
NEED_CONTEXT,
_IOunit_vector.cmp_info.CmpIdx );
if ( retval != PAPI_OK )
return ( retval );
retval = _common_set_overflow_BGPM( this_state->EventGroup,
this_state->overflow_list[this_state->overflow_count-1].EventIndex,
this_state->overflow_list[this_state->overflow_count-1].threshold,
user_signal_handler_IOUNIT );
if ( retval < 0 ) return retval;
}
return ( PAPI_OK );
}
int
_papi_hwd_set_overflow( EventSetInfo_t * ESI, int EventIndex, int threshold )
{
hwd_control_state_t *this_state = &ESI->machdep;
struct hwd_pmc_control *contr = &this_state->control;
int i, ncntrs, nricntrs = 0, nracntrs = 0, retval = 0;
OVFDBG( "EventIndex=%d, threshold = %d\n", EventIndex, threshold );
/* The correct event to overflow is EventIndex */
ncntrs = _papi_hwi_system_info.sub_info.num_cntrs;
i = ESI->EventInfoArray[EventIndex].pos[0];
if ( i >= ncntrs ) {
OVFDBG( "Selector id (%d) larger than ncntrs (%d)\n", i, ncntrs );
return PAPI_EINVAL;
}
if ( threshold != 0 ) { /* Set an overflow threshold */
if ( ESI->EventInfoArray[EventIndex].derived ) {
OVFDBG( "Can't overflow on a derived event.\n" );
return PAPI_EINVAL;
}
if ( ( retval =
_papi_hwi_start_signal( _papi_hwi_system_info.sub_info.
hardware_intr_sig,
NEED_CONTEXT ) ) != PAPI_OK )
return ( retval );
contr->cpu_control.ireset[i] = PMC_OVFL - threshold;
nricntrs = ++contr->cpu_control.nrictrs;
nracntrs = --contr->cpu_control.nractrs;
contr->si_signo = _papi_hwi_system_info.sub_info.hardware_intr_sig;
contr->cpu_control.ppc64.mmcr0 |= PERF_INT_ENABLE;
/* move this event to the bottom part of the list if needed */
if ( i < nracntrs )
swap_events( ESI, contr, i, nracntrs );
OVFDBG( "Modified event set\n" );
} else {
if ( contr->cpu_control.ppc64.mmcr0 & PERF_INT_ENABLE ) {
contr->cpu_control.ireset[i] = 0;
nricntrs = --contr->cpu_control.nrictrs;
nracntrs = ++contr->cpu_control.nractrs;
if ( !nricntrs )
contr->cpu_control.ppc64.mmcr0 &= ( ~PERF_INT_ENABLE );
}
/* move this event to the top part of the list if needed */
if ( i >= nracntrs )
swap_events( ESI, contr, i, nracntrs - 1 );
if ( !nricntrs )
contr->si_signo = 0;
OVFDBG( "Modified event set\n" );
retval =
_papi_hwi_stop_signal( _papi_hwi_system_info.sub_info.
hardware_intr_sig );
}
#ifdef DEBUG
print_control( &contr->cpu_control );
#endif
OVFDBG( "%s:%d: Hardware overflow is still experimental.\n", __FILE__,
__LINE__ );
OVFDBG( "End of call. Exit code: %d\n", retval );
return ( retval );
}
static int
_x86_set_overflow( EventSetInfo_t * ESI, int EventIndex, int threshold )
{
struct hwd_pmc_control *contr = &ESI->ctl_state->control;
int i, ncntrs, nricntrs = 0, nracntrs = 0, retval = 0;
OVFDBG( "EventIndex=%d\n", EventIndex );
#ifdef DEBUG
if ( is_pentium4() )
print_control( &ESI->ctl_state->control.cpu_control );
#endif
/* The correct event to overflow is EventIndex */
ncntrs = MY_VECTOR.cmp_info.num_cntrs;
i = ESI->EventInfoArray[EventIndex].pos[0];
if ( i >= ncntrs ) {
PAPIERROR( "Selector id %d is larger than ncntrs %d", i, ncntrs );
return PAPI_EINVAL;
}
if ( threshold != 0 ) { /* Set an overflow threshold */
retval = _papi_hwi_start_signal( MY_VECTOR.cmp_info.hardware_intr_sig,
NEED_CONTEXT,
MY_VECTOR.cmp_info.CmpIdx );
if ( retval != PAPI_OK )
return ( retval );
/* overflow interrupt occurs on the NEXT event after overflow occurs
thus we subtract 1 from the threshold. */
contr->cpu_control.ireset[i] = ( -threshold + 1 );
if ( is_pentium4() )
contr->cpu_control.evntsel[i] |= CCCR_OVF_PMI_T0;
else
contr->cpu_control.evntsel[i] |= PERF_INT_ENABLE;
contr->cpu_control.nrictrs++;
contr->cpu_control.nractrs--;
nricntrs = ( int ) contr->cpu_control.nrictrs;
nracntrs = ( int ) contr->cpu_control.nractrs;
contr->si_signo = MY_VECTOR.cmp_info.hardware_intr_sig;
/* move this event to the bottom part of the list if needed */
if ( i < nracntrs )
swap_events( ESI, contr, i, nracntrs );
OVFDBG( "Modified event set\n" );
} else {
if ( is_pentium4() && contr->cpu_control.evntsel[i] & CCCR_OVF_PMI_T0 ) {
contr->cpu_control.ireset[i] = 0;
contr->cpu_control.evntsel[i] &= ( ~CCCR_OVF_PMI_T0 );
contr->cpu_control.nrictrs--;
contr->cpu_control.nractrs++;
} else if ( !is_pentium4() &&
contr->cpu_control.evntsel[i] & PERF_INT_ENABLE ) {
contr->cpu_control.ireset[i] = 0;
contr->cpu_control.evntsel[i] &= ( ~PERF_INT_ENABLE );
contr->cpu_control.nrictrs--;
contr->cpu_control.nractrs++;
}
nricntrs = ( int ) contr->cpu_control.nrictrs;
nracntrs = ( int ) contr->cpu_control.nractrs;
/* move this event to the top part of the list if needed */
if ( i >= nracntrs )
swap_events( ESI, contr, i, nracntrs - 1 );
if ( !nricntrs )
contr->si_signo = 0;
OVFDBG( "Modified event set\n" );
retval = _papi_hwi_stop_signal( MY_VECTOR.cmp_info.hardware_intr_sig );
}
#ifdef DEBUG
if ( is_pentium4() )
print_control( &ESI->ctl_state->control.cpu_control );
#endif
OVFDBG( "End of call. Exit code: %d\n", retval );
return ( retval );
}
/*
* Set Overflow
*
* This is commented out in BG/L/P - need to explore and complete...
* However, with true 64-bit counters in BG/Q and all counters for PAPI
* always starting from a true zero (we don't allow write...), the possibility
* for overflow is remote at best...
*/
int
L2UNIT_set_overflow( EventSetInfo_t * ESI, int EventIndex, int threshold )
{
#ifdef DEBUG_BGQ
printf("BEGIN L2UNIT_set_overflow\n");
#endif
L2UNIT_control_state_t * this_state = ( L2UNIT_control_state_t * ) ESI->ctl_state;
int retval;
int evt_idx;
/*
* In case an BGPM eventGroup HAS BEEN applied or attached before
* overflow is set, delete the eventGroup and create an new empty one,
* and rebuild as it was prior to deletion
*/
#ifdef DEBUG_BGQ
printf( "L2UNIT_set_overflow: bgpm_eventset_applied = %d, threshold = %d\n",
this_state->bgpm_eventset_applied, threshold );
#endif
if ( 1 == this_state->bgpm_eventset_applied && 0 != threshold ) {
_common_deleteRecreate( &this_state->EventGroup );
_common_rebuildEventgroup( this_state->count,
this_state->EventGroup_local,
&this_state->EventGroup );
/* set BGPM eventGroup flag back to NOT applied yet (0)
* because the eventGroup has been recreated from scratch */
this_state->bgpm_eventset_applied = 0;
}
evt_idx = ESI->EventInfoArray[EventIndex].pos[0];
SUBDBG( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
evt_idx, EventIndex, threshold );
#ifdef DEBUG_BGQ
printf( "Hardware counter %d (vs %d) used in overflow, threshold %d\n",
evt_idx, EventIndex, threshold );
#endif
/* If this counter isn't set to overflow, it's an error */
if ( threshold == 0 ) {
/* Remove the signal handler */
retval = _papi_hwi_stop_signal( _L2unit_vector.cmp_info.hardware_intr_sig );
if ( retval != PAPI_OK )
return ( retval );
}
else {
this_state->overflow = 1;
this_state->overflow_count++;
this_state->overflow_list[this_state->overflow_count-1].threshold = threshold;
this_state->overflow_list[this_state->overflow_count-1].EventIndex = evt_idx;
#ifdef DEBUG_BGQ
printf( "L2UNIT_set_overflow: Enable the signal handler\n" );
#endif
/* Enable the signal handler */
retval = _papi_hwi_start_signal( _L2unit_vector.cmp_info.hardware_intr_sig,
NEED_CONTEXT,
_L2unit_vector.cmp_info.CmpIdx );
if ( retval != PAPI_OK )
return ( retval );
_common_set_overflow_BGPM( this_state->EventGroup,
this_state->overflow_list[this_state->overflow_count-1].EventIndex,
this_state->overflow_list[this_state->overflow_count-1].threshold,
user_signal_handler_L2UNIT );
}
return ( PAPI_OK );
}
