summaryrefslogtreecommitdiff
path: root/src/mem/ruby/tester/DetermGETXGenerator.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/mem/ruby/tester/DetermGETXGenerator.cc')
-rw-r--r--src/mem/ruby/tester/DetermGETXGenerator.cc151
1 files changed, 151 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..1caebbdab
--- /dev/null
+++ b/src/mem/ruby/tester/DetermGETXGenerator.cc
@@ -0,0 +1,151 @@
+
+/*
+ * 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 "DetermGETXGenerator.hh"
+#include "DetermGETXGeneratorStatus.hh"
+#include "LockStatus.hh"
+#include "Sequencer.hh"
+#include "System.hh"
+#include "RubyConfig.hh"
+#include "SubBlock.hh"
+#include "DeterministicDriver.hh"
+#include "Chip.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");
+ sequencer()->makeRequest(CacheMsg(m_address, m_address, CacheRequestType_ST, Address(3), AccessModeType_UserMode, 1, PrefetchBit_No, 0, Address(0), 0 /* only 1 SMT thread */, 0, false));
+}
+
+Sequencer* DetermGETXGenerator::sequencer() const
+{
+ return g_system_ptr->getChip(m_node/RubyConfig::numberOfProcsPerChip())->getSequencer(m_node%RubyConfig::numberOfProcsPerChip());
+}
+
+void DetermGETXGenerator::print(ostream& out) const
+{
+}
+