InvalidateGenerator.cc revision 6386 
1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/*
30 * $Id$
31 *
32 */
33
34// This Deterministic Generator generates GETX requests for all nodes in the system
35// The GETX requests are generated one at a time in round-robin fashion 0...1...2...etc.
36
37#include "mem/ruby/tester/DetermGETXGenerator.hh"
38#include "mem/protocol/DetermGETXGeneratorStatus.hh"
39#include "mem/ruby/tester/DeterministicDriver.hh"
40#include "mem/ruby/tester/Tester_Globals.hh"
41#include "mem/ruby/common/Global.hh"
42#include "mem/ruby/tester/SpecifiedGenerator.hh"
43//#include "DMAController.hh"
44#include "mem/ruby/libruby.hh"
45
46
47DetermGETXGenerator::DetermGETXGenerator(NodeID node, DeterministicDriver * driver)
48{
49  m_status = DetermGETXGeneratorStatus_Thinking;
50  m_last_transition = 0;
51  counter = 0;
52  m_node = node;
53  m_address = Address(1);  // initialize to null value
54  m_counter = 0;
55  issued_load = false;
56  parent_driver = driver;
57  // don't know exactly when this node needs to request so just guess randomly
58  parent_driver->eventQueue->scheduleEvent(this, 1+(random() % 200));
59}
60
61DetermGETXGenerator::~DetermGETXGenerator()
62{
63}
64
65void DetermGETXGenerator::wakeup()
66{
67  DEBUG_EXPR(TESTER_COMP, MedPrio, m_node);
68  DEBUG_EXPR(TESTER_COMP, MedPrio, m_status);
69
70  // determine if this node is next for the GETX round robin request
71  if (m_status == DetermGETXGeneratorStatus_Thinking) {
72    if (parent_driver->isStoreReady(m_node)) {
73      if (!issued_load) {
74        pickAddress();
75      }
76      m_status = DetermGETXGeneratorStatus_Store_Pending;  // Store Pending
77      m_last_transition = parent_driver->eventQueue->getTime();
78      initiateStore();  // GETX
79    } else { // I'll check again later
80      parent_driver->eventQueue->scheduleEvent(this, thinkTime());
81    }
82  } else {
83    WARN_EXPR(m_status);
84    ERROR_MSG("Invalid status");
85  }
86
87}
88
89void DetermGETXGenerator::performCallback(NodeID proc, Address address)
90{
91  assert(proc == m_node);
92  assert(address == m_address);
93
94  DEBUG_EXPR(TESTER_COMP, LowPrio, proc);
95  DEBUG_EXPR(TESTER_COMP, LowPrio, m_status);
96  DEBUG_EXPR(TESTER_COMP, LowPrio, address);
97
98  if (m_status == DetermGETXGeneratorStatus_Store_Pending) {
99    parent_driver->recordStoreLatency(parent_driver->eventQueue->getTime() - m_last_transition);
100    parent_driver->storeCompleted(m_node, address);  // advance the store queue
101
102    m_counter++;
103    if (m_counter < parent_driver->m_tester_length) {
104      m_status = DetermGETXGeneratorStatus_Thinking;
105      m_last_transition = parent_driver->eventQueue->getTime();
106      parent_driver->eventQueue->scheduleEvent(this, waitTime());
107    } else {
108      parent_driver->reportDone();
109      m_status = DetermGETXGeneratorStatus_Done;
110      m_last_transition = parent_driver->eventQueue->getTime();
111    }
112
113  } else {
114    WARN_EXPR(m_status);
115    ERROR_MSG("Invalid status");
116  }
117}
118
119int DetermGETXGenerator::thinkTime() const
120{
121  return parent_driver->m_think_time;
122}
123
124int DetermGETXGenerator::waitTime() const
125{
126  return parent_driver->m_wait_time;
127}
128
129void DetermGETXGenerator::pickAddress()
130{
131  assert(m_status == DetermGETXGeneratorStatus_Thinking);
132
133  m_address = parent_driver->getNextStoreAddr(m_node);
134}
135
136void DetermGETXGenerator::initiateStore()
137{
138  DEBUG_MSG(TESTER_COMP, MedPrio, "initiating Store");
139  uint8_t *write_data = new uint8_t[64];
140  for(int i=0; i < 64; i++) {
141      write_data[i] = m_node;
142  }
143
144  char name [] = "Sequencer_";
145  char port_name [13];
146  sprintf(port_name, "%s%d", name, m_node);
147  int64_t request_id;
148  if (counter%10 == 0) {
149    if (!issued_load) {
150      cerr << m_node << " RMW_Read to address: " << m_address.getAddress() << endl << flush;
151      request_id = libruby_issue_request(libruby_get_port_by_name(port_name), RubyRequest(m_address.getAddress(), write_data, 64, 0, RubyRequestType_RMW_Read, RubyAccessMode_Supervisor));
152      issued_load = true;
153    }
154    else {
155      cerr << m_node << " RMW_Write to address: " << m_address.getAddress() << endl << flush;
156      request_id = libruby_issue_request(libruby_get_port_by_name(port_name), RubyRequest(m_address.getAddress(), write_data, 64, 0, RubyRequestType_RMW_Write, RubyAccessMode_Supervisor));
157      issued_load = false;
158      counter++;
159    }
160  }
161  else {
162      cerr << m_node << " ST to address: " << m_address.getAddress() << endl << flush;
163      request_id = libruby_issue_request(libruby_get_port_by_name(port_name), RubyRequest(m_address.getAddress(), write_data, 64, 0, RubyRequestType_ST, RubyAccessMode_Supervisor));
164      counter++;
165  }
166
167  // delete [] write_data;
168
169  ASSERT(parent_driver->requests.find(request_id) == parent_driver->requests.end());
170  parent_driver->requests.insert(make_pair(request_id, make_pair(m_node, m_address)));
171}
172
173void DetermGETXGenerator::print(ostream& out) const
174{
175}
176
177