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/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* $Id$
*
*/
#include "mem/ruby/tester/DetermSeriesGETSGenerator.hh"
#include "mem/protocol/DetermSeriesGETSGeneratorStatus.hh"
#include "mem/protocol/LockStatus.hh"
#include "mem/ruby/system/Sequencer.hh"
#include "mem/ruby/system/System.hh"
#include "mem/ruby/config/RubyConfig.hh"
#include "mem/ruby/common/SubBlock.hh"
#include "mem/ruby/tester/DeterministicDriver.hh"
#include "mem/protocol/Chip.hh"
DetermSeriesGETSGenerator::DetermSeriesGETSGenerator(NodeID node, DeterministicDriver& driver) :
m_driver(driver)
{
m_status = DetermSeriesGETSGeneratorStatus_Thinking;
m_last_transition = 0;
m_node = node;
m_address = Address(9999); // initialize to null value
m_counter = 0;
// don't know exactly when this node needs to request so just guess randomly
g_eventQueue_ptr->scheduleEvent(this, 1+(random() % 200));
}
DetermSeriesGETSGenerator::~DetermSeriesGETSGenerator()
{
}
void DetermSeriesGETSGenerator::wakeup()
{
DEBUG_EXPR(TESTER_COMP, MedPrio, m_node);
DEBUG_EXPR(TESTER_COMP, MedPrio, m_status);
// determine if this node is next for the SeriesGETS round robin request
if (m_status == DetermSeriesGETSGeneratorStatus_Thinking) {
if (m_driver.isLoadReady(m_node)) {
pickAddress();
m_status = DetermSeriesGETSGeneratorStatus_Load_Pending; // Load Pending
m_last_transition = g_eventQueue_ptr->getTime();
initiateLoad(); // SeriesGETS
} else { // I'll check again later
g_eventQueue_ptr->scheduleEvent(this, thinkTime());
}
} else {
WARN_EXPR(m_status);
ERROR_MSG("Invalid status");
}
}
void DetermSeriesGETSGenerator::performCallback(NodeID proc, SubBlock& data)
{
Address address = data.getAddress();
assert(proc == m_node);
assert(address == m_address);
DEBUG_EXPR(TESTER_COMP, LowPrio, proc);
DEBUG_EXPR(TESTER_COMP, LowPrio, m_status);
DEBUG_EXPR(TESTER_COMP, LowPrio, address);
DEBUG_EXPR(TESTER_COMP, LowPrio, data);
if (m_status == DetermSeriesGETSGeneratorStatus_Load_Pending) {
m_driver.recordLoadLatency(g_eventQueue_ptr->getTime() - m_last_transition);
data.writeByte(m_node);
m_driver.loadCompleted(m_node, data.getAddress()); // advance the load queue
m_counter++;
// do we still have more requests to complete before the next proc starts?
if (m_counter < g_tester_length*g_NUM_COMPLETIONS_BEFORE_PASS) {
m_status = DetermSeriesGETSGeneratorStatus_Thinking;
m_last_transition = g_eventQueue_ptr->getTime();
g_eventQueue_ptr->scheduleEvent(this, waitTime());
} else {
m_driver.reportDone();
m_status = DetermSeriesGETSGeneratorStatus_Done;
m_last_transition = g_eventQueue_ptr->getTime();
}
} else {
WARN_EXPR(m_status);
ERROR_MSG("Invalid status");
}
}
int DetermSeriesGETSGenerator::thinkTime() const
{
return g_think_time;
}
int DetermSeriesGETSGenerator::waitTime() const
{
return g_wait_time;
}
void DetermSeriesGETSGenerator::pickAddress()
{
assert(m_status == DetermSeriesGETSGeneratorStatus_Thinking);
m_address = m_driver.getNextLoadAddr(m_node);
}
void DetermSeriesGETSGenerator::initiateLoad()
{
DEBUG_MSG(TESTER_COMP, MedPrio, "initiating Load");
Addr data_addr = m_address.getAddress();
Request request(0, data_addr, 1, Flags<unsigned int>(), 3, 0, 0);
MemCmd::Command command;
command = MemCmd::ReadReq;
request.setFlags(Request::INST_FETCH);
Packet pkt(&request, command, 0); // TODO -- make dest a real NodeID
sequencer()->makeRequest(&pkt);
}
Sequencer* DetermSeriesGETSGenerator::sequencer() const
{
return g_system_ptr->getChip(m_node/RubyConfig::numberOfProcsPerChip())->getSequencer(m_node%RubyConfig::numberOfProcsPerChip());
}
void DetermSeriesGETSGenerator::print(ostream& out) const
{
}
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