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/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* Copyright (c) 2009 Advanced Micro Devices, Inc.
* 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.
*/
#include "cpu/rubytest/Check.hh"
#include "cpu/rubytest/RubyTester.hh"
#include "mem/ruby/common/Global.hh"
#include "mem/ruby/common/SubBlock.hh"
#include "mem/ruby/eventqueue/RubyEventQueue.hh"
#include "mem/ruby/system/System.hh"
#include "sim/sim_exit.hh"
RubyTester::RubyTester(const Params *p)
: MemObject(p), checkStartEvent(this),
m_checks_to_complete(p->checks_to_complete),
m_deadlock_threshold(p->deadlock_threshold),
m_wakeup_frequency(p->wakeup_frequency)
{
m_checks_completed = 0;
// add the check start event to the event queue
schedule(checkStartEvent, 1);
}
RubyTester::~RubyTester()
{
delete m_checkTable_ptr;
for (int i = 0; i < ports.size(); i++)
delete ports[i];
}
void
RubyTester::init()
{
assert(ports.size() > 0);
m_last_progress_vector.setSize(ports.size());
for (int i = 0; i < m_last_progress_vector.size(); i++) {
m_last_progress_vector[i] = 0;
}
m_num_cpu_sequencers = ports.size();
m_checkTable_ptr = new CheckTable(m_num_cpu_sequencers, this);
}
Port *
RubyTester::getPort(const std::string &if_name, int idx)
{
if (if_name != "cpuPort") {
panic("RubyTester::getPort: unknown port %s requested", if_name);
}
if (idx >= (int)ports.size()) {
ports.resize(idx + 1);
}
if (ports[idx] != NULL) {
panic("RubyTester::getPort: port %d already assigned", idx);
}
CpuPort *port = new CpuPort(csprintf("%s-port%d", name(), idx), this, idx);
ports[idx] = port;
return port;
}
Tick
RubyTester::CpuPort::recvAtomic(PacketPtr pkt)
{
panic("RubyTester::CpuPort::recvAtomic() not implemented!\n");
return 0;
}
bool
RubyTester::CpuPort::recvTiming(PacketPtr pkt)
{
// retrieve the subblock and call hitCallback
RubyTester::SenderState* senderState =
safe_cast<RubyTester::SenderState*>(pkt->senderState);
SubBlock* subblock = senderState->subBlock;
assert(subblock != NULL);
// pop the sender state from the packet
pkt->senderState = senderState->saved;
tester->hitCallback(idx, subblock);
// Now that the tester has completed, delete the senderState
// (includes sublock) and the packet, then return
delete senderState;
delete pkt->req;
delete pkt;
return true;
}
Port*
RubyTester::getCpuPort(int idx)
{
assert(idx >= 0 && idx < ports.size());
return ports[idx];
}
void
RubyTester::hitCallback(NodeID proc, SubBlock* data)
{
// Mark that we made progress
m_last_progress_vector[proc] = g_eventQueue_ptr->getTime();
DPRINTF(RubyTest, "completed request for proc: %d\n", proc);
DPRINTF(RubyTest, "addr: 0x%x, size: %d, data: ",
data->getAddress(), data->getSize());
for (int byte = 0; byte < data->getSize(); byte++) {
DPRINTF(RubyTest, "%d", data->getByte(byte));
}
DPRINTF(RubyTest, "\n");
// This tells us our store has 'completed' or for a load gives us
// back the data to make the check
Check* check_ptr = m_checkTable_ptr->getCheck(data->getAddress());
assert(check_ptr != NULL);
check_ptr->performCallback(proc, data);
}
void
RubyTester::wakeup()
{
if (m_checks_completed < m_checks_to_complete) {
// Try to perform an action or check
Check* check_ptr = m_checkTable_ptr->getRandomCheck();
assert(check_ptr != NULL);
check_ptr->initiate();
checkForDeadlock();
schedule(checkStartEvent, curTick + m_wakeup_frequency);
} else {
exitSimLoop("Ruby Tester completed");
}
}
void
RubyTester::checkForDeadlock()
{
int size = m_last_progress_vector.size();
Time current_time = g_eventQueue_ptr->getTime();
for (int processor = 0; processor < size; processor++) {
if ((current_time - m_last_progress_vector[processor]) >
m_deadlock_threshold) {
WARN_EXPR(current_time);
WARN_EXPR(m_last_progress_vector[processor]);
WARN_EXPR(current_time - m_last_progress_vector[processor]);
WARN_EXPR(processor);
ERROR_MSG("Deadlock detected.");
}
}
}
void
RubyTester::print(ostream& out) const
{
out << "[RubyTester]" << endl;
}
RubyTester *
RubyTesterParams::create()
{
return new RubyTester(this);
}
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