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/* IBM_PROLOG_BEGIN_TAG
* This is an automatically generated prolog.
*
* $Source: src/usr/diag/attn/attnmem.C $
*
* IBM CONFIDENTIAL
*
* COPYRIGHT International Business Machines Corp. 2012
*
* 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_TAG
*/
/**
* @file attnmem.C
*
* @brief HBATTN Memory attention operations function definitions.
*/
#include <errl/errlmanager.H>
#include <targeting/common/targetservice.H>
#include "attnmem.H"
#include "attnlist.H"
#include "attntarget.H"
using namespace std;
using namespace PRDF;
using namespace TARGETING;
using namespace ERRORLOG;
namespace ATTN
{
errlHndl_t MemOps::mask(const AttnData & i_data)
{
errlHndl_t err = 0;
do {
TargetHandle_t proc = getTargetService().getProc(i_data.targetHndl);
mutex_lock(&iv_mutex);
bool mask = iv_maskState[proc] == 0;
iv_maskState[proc]++;
mutex_unlock(&iv_mutex);
if(mask)
{
uint64_t ipollMaskWriteBits = 0;
IPOLL::getCheckbits(HOST, ipollMaskWriteBits);
err = modifyScom(proc, IPOLL::address,
~ipollMaskWriteBits, SCOM_AND);
if(err)
{
break;
}
}
} while(0);
return err;
}
errlHndl_t MemOps::unmask(const AttnData & i_data)
{
errlHndl_t err = 0;
do {
TargetHandle_t proc = getTargetService().getProc(i_data.targetHndl);
mutex_lock(&iv_mutex);
iv_maskState[proc]--;
bool unmask = iv_maskState[proc] == 0;
if(unmask)
{
iv_maskState.erase(proc);
}
mutex_unlock(&iv_mutex);
if(unmask)
{
uint64_t ipollMaskWriteBits = 0;
IPOLL::getCheckbits(HOST, ipollMaskWriteBits);
err = modifyScom(proc, IPOLL::address,
ipollMaskWriteBits, SCOM_OR);
if(err)
{
break;
}
}
} while(0);
return err;
}
errlHndl_t MemOps::query(const AttnData & i_attnToCheck, bool & o_active)
{
errlHndl_t err = 0;
uint64_t checkbits = 0, scomData = 0;
TargetHandle_t mem = i_attnToCheck.targetHndl;
do
{
TargetHandle_t mcs = getTargetService().getMcs(mem);
MCI::getCheckbits(i_attnToCheck.attnType, checkbits);
err = getScom(mcs, MCI::address, scomData);
if(err)
{
break;
}
if(scomData & checkbits)
{
o_active = true;
}
else
{
o_active = false;
}
} while(0);
return err;
}
struct ResolveMcsArgs
{
TargetHandle_t proc;
AttentionList * list;
MemOps * ops;
};
void resolveMcs(uint64_t i_mcs, void * i_data)
{
ResolveMcsArgs * args = static_cast<ResolveMcsArgs *>(i_data);
uint64_t mciFirScomData;
TargetHandle_t mcs = getTargetService().getMcs(args->proc, i_mcs);
// read the MCI fir to determine what type of attention
// centaur reporting
errlHndl_t err = getScom(mcs, MCI::address, mciFirScomData);
if(err)
{
errlCommit(err, HBATTN_COMP_ID);
}
else
{
// pick the highest priority attention
for(uint64_t type = INVALID_ATTENTION_TYPE;
type != END_ATTENTION_TYPE;
++type)
{
uint64_t mask;
if(!MCI::getCheckbits(type, mask))
{
// this object doesn't support
// this attention type
continue;
}
if(mask & mciFirScomData)
{
AttnData d;
d.targetHndl = getTargetService().getMembuf(mcs);
d.attnType = static_cast<ATTENTION_VALUE_TYPE>(type);
args->list->add(Attention(d, args->ops));
break;
}
}
}
}
errlHndl_t MemOps::resolve(
TargetHandle_t i_proc,
uint64_t i_typeMask,
AttentionList & o_attentions)
{
errlHndl_t err = 0;
uint64_t gp1ScomData = 0, hostMask = 0;
vector<uint64_t> mcsPositions;
IPOLL::getCheckbits(HOST, hostMask);
do {
if(hostMask & ~i_typeMask)
{
// host attentions are masked....
break;
}
// get the nest_gp1 register content and decode
// (get a list of membufs reporting attentions)
err = getScom(i_proc, GP1::address, gp1ScomData);
if(err)
{
break;
}
ResolveMcsArgs args;
args.proc = i_proc;
args.list = &o_attentions;
args.ops = this;
GP1::forEach(gp1ScomData, &args, &resolveMcs);
} while(0);
return err;
}
MemOps::MemOps()
{
mutex_init(&iv_mutex);
}
MemOps::~MemOps()
{
mutex_destroy(&iv_mutex);
}
}
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