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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/diag/attn/test/attnfakeipoll.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* COPYRIGHT International Business Machines Corp. 2012,2013 */
/* */
/* 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 otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* Origin: 30 */
/* */
/* IBM_PROLOG_END_TAG */
/**
* @file attnfakeipoll.C
*
* @brief HBATTN fake Ipoll mask register class method definitions.
*/
#include "attnfakeipoll.H"
#include "attnfakesys.H"
#include "attnfakepresenter.H"
#include "../attntarget.H"
using namespace PRDF;
using namespace TARGETING;
using namespace std;
namespace ATTN
{
struct InterruptProperties
{
FakeSystem * system;
FakeIpoll * inst;
};
errlHndl_t FakeIpoll::processPutReg(
FakeSystem & i_sys,
TARGETING::TargetHandle_t i_target,
uint64_t i_address,
uint64_t i_new,
uint64_t i_old)
{
errlHndl_t err = NULL;
// check for a gfir bit turning on, or
// if ipoll is unmasked while gfir is high
// then raise an interrupt
uint64_t ipollContent = i_address == IPOLL::address
? i_new
: i_sys.getReg(i_target, IPOLL::address);
uint64_t content = i_address == iv_address
? i_new
: i_sys.getReg(i_target, iv_address);
bool masked = (ipollContent & iv_ipollbits);
bool hi = (content & iv_gfirbits);
bool unmasked = i_address == IPOLL::address
? ~ipollContent & i_old & iv_ipollbits
: false;
bool set = false;
if(i_address == GP1::address)
{
set = i_new != i_old;
}
else if(i_address != IPOLL::address)
{
set = ((content & iv_gfirbits) && !(i_old & iv_gfirbits));
}
if((set && !masked)
|| (unmasked && hi))
{
err = i_sys.modifyReg(
i_target,
IPOLL_STATUS_REG,
iv_ipollbits,
SCOM_OR);
interrupt(i_sys, i_target, ATTENTION);
}
else
{
err = i_sys.modifyReg(
i_target,
IPOLL_STATUS_REG,
~iv_ipollbits,
SCOM_AND);
}
return err;
}
void FakeIpoll::processEoi(
FakeSystem & i_sys,
TARGETING::TargetHandle_t i_source,
MessageType i_type)
{
// if gfir is still high and unmasked raise
// another interrupt...
uint64_t ipollContent = i_sys.getReg(i_source, IPOLL::address);
uint64_t content = i_sys.getReg(i_source, iv_address);
bool masked = ipollContent & iv_ipollbits;
bool high = content & iv_gfirbits;
if(high && !masked && iv_address != GP1::address)
{
interrupt(i_sys, i_source, ATTENTION);
}
}
void FakeIpoll::callback(
TargetHandle_t i_source,
MessageType i_type,
void * i_properties)
{
InterruptProperties * p = static_cast<InterruptProperties *>(i_properties);
FakeSystem & f = *p->system;
FakeIpoll & inst = *p->inst;
inst.processEoi(f, i_source, i_type);
delete p;
}
void FakeIpoll::interrupt(
FakeSystem & i_system,
TargetHandle_t i_source,
MessageType i_type)
{
// instruct the presenter to raise an interrupt, using
// our callback
InterruptProperties * p = new InterruptProperties;
p->inst = this;
p->system = & i_system;
iv_presenter->interrupt(i_source, i_type, p, &callback);
}
void FakeIpoll::install(FakeSystem & i_sys)
{
// monitor ipoll
i_sys.addReg(IPOLL::address, *this);
// monitor signal being masked by ipoll
i_sys.addReg(iv_address, *this);
}
void getMask(uint64_t i_pos, void * i_data)
{
uint64_t & mask = *static_cast<uint64_t *>(i_data);
uint64_t tmp = 0;
GP1::getCheckbits(i_pos, tmp);
mask |= tmp;
}
FakeIpoll::FakeIpoll(
uint64_t i_type,
FakePresenter & i_presenter) :
iv_address(0),
iv_gfirbits(0),
iv_ipollbits(0),
iv_presenter(&i_presenter)
{
if(i_type == HOST)
{
// figure out what bits to monitor
// in the nest gp1 register, if
// this instance is monitoring
// HOST attentions.
GP1::forEach(0xffffffffffffffffull, &iv_gfirbits, &getMask);
iv_address = GP1::address;
}
else
{
GFIR::getAddress(i_type, iv_address);
GFIR::getCheckbits(i_type, iv_gfirbits);
}
IPOLL::getCheckbits(i_type, iv_ipollbits);
}
}
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