errlHndl_t ServiceCommon::handleAttentions(const TargetHandle_t i_proc)
{
errlHndl_t err = NULL;
AttentionList attentions;
MemOps & memOps = getMemOps();
ProcOps & procOps = getProcOps();
do {
attentions.clear();
// query the proc resolver for active attentions
err = procOps.resolve(i_proc, 0, attentions);
if(err)
{
break;
}
// query the mem resolver for active attentions
err = memOps.resolve(i_proc, attentions);
if(err)
{
break;
}
if(!attentions.empty())
{
err = getPrdWrapper().callPrd(attentions);
}
if(err)
{
break;
}
#ifdef __HOSTBOOT_RUNTIME
// During runtime, we will only handle one attention at a time
//and give control back to OPAL.
break;
#endif //__HOSTBOOT_RUNTIME
} while(!attentions.empty());
return err;
}
void Service::processAttentions(const TargetHandleList & i_procs)
{
errlHndl_t err = NULL;
AttentionList attentions;
MemOps & memOps = getMemOps();
ProcOps & procOps = getProcOps();
do {
attentions.clear();
// enumerate the highest priority pending attention
// on every chip and then give the entire set to PRD
TargetHandleList::const_iterator pit = i_procs.end();
while(pit-- != i_procs.begin())
{
// enumerate proc local attentions (xstp,spcl,rec).
err = procOps.resolveIpoll(*pit, attentions);
if(err)
{
errlCommit(err, ATTN_COMP_ID);
}
// enumerate host attentions and convert
// to centaur targets
err = memOps.resolve(*pit, attentions);
if(err)
{
errlCommit(err, ATTN_COMP_ID);
}
}
err = getPrdWrapper().callPrd(attentions);
if(err)
{
errlCommit(err, ATTN_COMP_ID);
}
// unmask proc local attentions
// (xstp,rec,special) in ipoll mask
// any pending attentions will be found
// on the next pass
pit = i_procs.end();
while(pit-- != i_procs.begin())
{
mutex_lock(&iv_mutex);
// the other thread might be trying to mask
// on the same target. The mutex ensures
// neither thread corrupts the register.
err = modifyScom(
*pit,
IPOLL::address,
~HostMask::nonHost(),
SCOM_AND);
mutex_unlock(&iv_mutex);
if(err)
{
errlCommit(err, ATTN_COMP_ID);
}
}
// if on a given Centaur with a pending attention
// on an MBA, an attention comes on in the other MBA
// we don't get an interrupt for that. So make another
// pass and check for that.
} while(!attentions.empty());
}
