Merge Ruby Stuff

1 files changed, 220 insertions, 0 deletions

diff --git a/src/mem/ruby/tester/RequestGenerator.cc b/src/mem/ruby/tester/RequestGenerator.cc
new file mode 100644
index 000000000..4ee24544f
--- /dev/null
+++ b/src/mem/ruby/tester/RequestGenerator.cc
@@ -0,0 +1,220 @@
+
+/*
+ * 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/RequestGenerator.hh"
+#include "mem/protocol/RequestGeneratorStatus.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/SyntheticDriver.hh"
+#include "mem/protocol/Chip.hh"
+
+RequestGenerator::RequestGenerator(NodeID node, SyntheticDriver& driver) :
+  m_driver(driver)
+{
+  m_status = RequestGeneratorStatus_Thinking;
+  m_last_transition = 0;
+  m_node = node;
+  pickAddress();
+  m_counter = 0;
+
+  //g_eventQueue_ptr->scheduleEvent(this, 1+(random() % 200));
+}
+
+RequestGenerator::~RequestGenerator()
+{
+}
+
+void RequestGenerator::wakeup()
+{
+  DEBUG_EXPR(TESTER_COMP, MedPrio, m_node);
+  DEBUG_EXPR(TESTER_COMP, MedPrio, m_status);
+
+  if (m_status == RequestGeneratorStatus_Thinking) {
+    m_status = RequestGeneratorStatus_Test_Pending;
+    m_last_transition = g_eventQueue_ptr->getTime();
+    initiateTest();  // Test
+  } else if (m_status == RequestGeneratorStatus_Holding) {
+    m_status = RequestGeneratorStatus_Release_Pending;
+    m_last_transition = g_eventQueue_ptr->getTime();
+    initiateRelease();  // Release
+  } else if (m_status == RequestGeneratorStatus_Before_Swap) {
+    m_status = RequestGeneratorStatus_Swap_Pending;
+    m_last_transition = g_eventQueue_ptr->getTime();
+    initiateSwap();
+  } else {
+    WARN_EXPR(m_status);
+    ERROR_MSG("Invalid status");
+  }
+}
+
+void RequestGenerator::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 == RequestGeneratorStatus_Test_Pending) {
+    //    m_driver.recordTestLatency(g_eventQueue_ptr->getTime() - m_last_transition);
+    if (data.readByte() == LockStatus_Locked) {
+      // Locked - keep spinning
+      m_status = RequestGeneratorStatus_Thinking;
+      m_last_transition = g_eventQueue_ptr->getTime();
+      g_eventQueue_ptr->scheduleEvent(this, waitTime());
+    } else {
+      // Unlocked - try the swap
+      m_driver.recordTestLatency(g_eventQueue_ptr->getTime() - m_last_transition);
+      m_status = RequestGeneratorStatus_Before_Swap;
+      m_last_transition = g_eventQueue_ptr->getTime();
+      g_eventQueue_ptr->scheduleEvent(this, waitTime());
+    }
+  } else if (m_status == RequestGeneratorStatus_Swap_Pending) {
+    m_driver.recordSwapLatency(g_eventQueue_ptr->getTime() - m_last_transition);
+    if (data.readByte() == LockStatus_Locked) {
+      // We failed to aquire the lock
+      m_status = RequestGeneratorStatus_Thinking;
+      m_last_transition = g_eventQueue_ptr->getTime();
+      g_eventQueue_ptr->scheduleEvent(this, waitTime());
+    } else {
+      // We acquired the lock
+      data.writeByte(LockStatus_Locked);
+      m_status = RequestGeneratorStatus_Holding;
+      m_last_transition = g_eventQueue_ptr->getTime();
+      DEBUG_MSG(TESTER_COMP, HighPrio, "Acquired");
+      DEBUG_EXPR(TESTER_COMP, HighPrio, proc);
+      DEBUG_EXPR(TESTER_COMP, HighPrio, g_eventQueue_ptr->getTime());
+      g_eventQueue_ptr->scheduleEvent(this, holdTime());
+    }
+  } else if (m_status == RequestGeneratorStatus_Release_Pending) {
+    m_driver.recordReleaseLatency(g_eventQueue_ptr->getTime() - m_last_transition);
+    // We're releasing the lock
+    data.writeByte(LockStatus_Unlocked);
+
+    m_counter++;
+    if (m_counter < g_tester_length) {
+      m_status = RequestGeneratorStatus_Thinking;
+      m_last_transition = g_eventQueue_ptr->getTime();
+      pickAddress();
+      g_eventQueue_ptr->scheduleEvent(this, thinkTime());
+    } else {
+      m_driver.reportDone();
+      m_status = RequestGeneratorStatus_Done;
+      m_last_transition = g_eventQueue_ptr->getTime();
+    }
+  } else {
+    WARN_EXPR(m_status);
+    ERROR_MSG("Invalid status");
+  }
+}
+
+int RequestGenerator::thinkTime() const
+{
+  return g_think_time;
+}
+
+int RequestGenerator::waitTime() const
+{
+  return g_wait_time;
+}
+
+int RequestGenerator::holdTime() const
+{
+  return g_hold_time;
+}
+
+void RequestGenerator::pickAddress()
+{
+  assert(m_status == RequestGeneratorStatus_Thinking);
+  m_address = m_driver.pickAddress(m_node);
+}
+
+void RequestGenerator::initiateTest()
+{
+  DEBUG_MSG(TESTER_COMP, MedPrio, "initiating Test");
+
+  Addr data_addr = m_address.getAddress();
+  Request request(0, data_addr, 1, Flags<unsigned int>(), 1, 0, 0);
+  MemCmd::Command command;
+  command = MemCmd::ReadReq;
+
+  Packet pkt(&request, command, 0); // TODO -- make dest a real NodeID
+
+  sequencer()->makeRequest(&pkt);
+}
+
+void RequestGenerator::initiateSwap()
+{
+  DEBUG_MSG(TESTER_COMP, MedPrio, "initiating Swap");
+
+  Addr data_addr = m_address.getAddress();
+  Request request(0, data_addr, 1, Flags<unsigned int>(), 2, 0, 0);
+  MemCmd::Command command;
+  command = MemCmd::SwapReq;
+
+  Packet pkt(&request, command, 0); // TODO -- make dest a real NodeID
+
+  sequencer()->makeRequest(&pkt);
+}
+
+void RequestGenerator::initiateRelease()
+{
+  DEBUG_MSG(TESTER_COMP, MedPrio, "initiating Release");
+
+  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* RequestGenerator::sequencer() const
+{
+  return g_system_ptr->getChip(m_node/RubyConfig::numberOfProcsPerChip())->getSequencer(m_node%RubyConfig::numberOfProcsPerChip());
+}
+
+void RequestGenerator::print(ostream& out) const
+{
+  out << "[RequestGenerator]" << endl;
+}
+