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Diffstat (limited to 'src/mem/ruby/tester/DetermGETXGenerator.cc')
-rw-r--r-- | src/mem/ruby/tester/DetermGETXGenerator.cc | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/mem/ruby/tester/DetermGETXGenerator.cc b/src/mem/ruby/tester/DetermGETXGenerator.cc new file mode 100644 index 000000000..e4d8addd2 --- /dev/null +++ b/src/mem/ruby/tester/DetermGETXGenerator.cc @@ -0,0 +1,160 @@ + +/* + * 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. + */ + +/* + * $Id$ + * + */ + +// This Deterministic Generator generates GETX requests for all nodes in the system +// The GETX requests are generated one at a time in round-robin fashion 0...1...2...etc. + +#include "mem/ruby/tester/DetermGETXGenerator.hh" +#include "mem/protocol/DetermGETXGeneratorStatus.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" +#include "mem/packet.hh" + +DetermGETXGenerator::DetermGETXGenerator(NodeID node, DeterministicDriver& driver) : + m_driver(driver) +{ + m_status = DetermGETXGeneratorStatus_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)); +} + +DetermGETXGenerator::~DetermGETXGenerator() +{ +} + +void DetermGETXGenerator::wakeup() +{ + DEBUG_EXPR(TESTER_COMP, MedPrio, m_node); + DEBUG_EXPR(TESTER_COMP, MedPrio, m_status); + + // determine if this node is next for the GETX round robin request + if (m_status == DetermGETXGeneratorStatus_Thinking) { + if (m_driver.isStoreReady(m_node)) { + pickAddress(); + m_status = DetermGETXGeneratorStatus_Store_Pending; // Store Pending + m_last_transition = g_eventQueue_ptr->getTime(); + initiateStore(); // GETX + } else { // I'll check again later + g_eventQueue_ptr->scheduleEvent(this, thinkTime()); + } + } else { + WARN_EXPR(m_status); + ERROR_MSG("Invalid status"); + } + +} + +void DetermGETXGenerator::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 == DetermGETXGeneratorStatus_Store_Pending) { + m_driver.recordStoreLatency(g_eventQueue_ptr->getTime() - m_last_transition); + data.writeByte(m_node); + m_driver.storeCompleted(m_node, data.getAddress()); // advance the store queue + + m_counter++; + if (m_counter < g_tester_length) { + m_status = DetermGETXGeneratorStatus_Thinking; + m_last_transition = g_eventQueue_ptr->getTime(); + g_eventQueue_ptr->scheduleEvent(this, waitTime()); + } else { + m_driver.reportDone(); + m_status = DetermGETXGeneratorStatus_Done; + m_last_transition = g_eventQueue_ptr->getTime(); + } + + } else { + WARN_EXPR(m_status); + ERROR_MSG("Invalid status"); + } +} + +int DetermGETXGenerator::thinkTime() const +{ + return g_think_time; +} + +int DetermGETXGenerator::waitTime() const +{ + return g_wait_time; +} + +void DetermGETXGenerator::pickAddress() +{ + assert(m_status == DetermGETXGeneratorStatus_Thinking); + + m_address = m_driver.getNextStoreAddr(m_node); +} + +void DetermGETXGenerator::initiateStore() +{ + DEBUG_MSG(TESTER_COMP, MedPrio, "initiating Store"); + + Addr data_addr = m_address.getAddress(); + Request request(0, data_addr, 1, Flags<unsigned int>(), 3, 0, 0); + MemCmd::Command command; + command = MemCmd::WriteReq; + + Packet pkt(&request, command, 0); // TODO -- make dest a real NodeID + + sequencer()->makeRequest(&pkt); +} + +Sequencer* DetermGETXGenerator::sequencer() const +{ + return g_system_ptr->getChip(m_node/RubyConfig::numberOfProcsPerChip())->getSequencer(m_node%RubyConfig::numberOfProcsPerChip()); +} + +void DetermGETXGenerator::print(ostream& out) const +{ +} + |