RubyTester.cc revision 8832 
1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3 * Copyright (c) 2009 Advanced Micro Devices, Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include "base/misc.hh"
31#include "cpu/testers/rubytest/Check.hh"
32#include "cpu/testers/rubytest/RubyTester.hh"
33#include "debug/RubyTest.hh"
34#include "mem/ruby/common/Global.hh"
35#include "mem/ruby/common/SubBlock.hh"
36#include "mem/ruby/eventqueue/RubyEventQueue.hh"
37#include "mem/ruby/system/System.hh"
38#include "sim/sim_exit.hh"
39#include "sim/system.hh"
40
41RubyTester::RubyTester(const Params *p)
42  : MemObject(p), checkStartEvent(this),
43    _masterId(p->system->getMasterId(name())),
44    m_checks_to_complete(p->checks_to_complete),
45    m_deadlock_threshold(p->deadlock_threshold),
46    m_wakeup_frequency(p->wakeup_frequency),
47    m_check_flush(p->check_flush)
48{
49    m_checks_completed = 0;
50
51    // add the check start event to the event queue
52    schedule(checkStartEvent, 1);
53}
54
55RubyTester::~RubyTester()
56{
57    delete m_checkTable_ptr;
58    for (int i = 0; i < ports.size(); i++)
59        delete ports[i];
60}
61
62void
63RubyTester::init()
64{
65    assert(ports.size() > 0);
66
67    m_last_progress_vector.resize(ports.size());
68    for (int i = 0; i < m_last_progress_vector.size(); i++) {
69        m_last_progress_vector[i] = 0;
70    }
71
72    m_num_cpu_sequencers = ports.size();
73
74    m_checkTable_ptr = new CheckTable(m_num_cpu_sequencers, this);
75}
76
77Port *
78RubyTester::getPort(const std::string &if_name, int idx)
79{
80    if (if_name != "cpuPort") {
81        panic("RubyTester::getPort: unknown port %s requested", if_name);
82    }
83
84    if (idx >= (int)ports.size()) {
85        ports.resize(idx + 1);
86    }
87
88    if (ports[idx] != NULL) {
89        panic("RubyTester::getPort: port %d already assigned", idx);
90    }
91
92    CpuPort *port = new CpuPort(csprintf("%s-port%d", name(), idx), this, idx);
93
94    ports[idx] = port;
95    return port;
96}
97
98Tick
99RubyTester::CpuPort::recvAtomic(PacketPtr pkt)
100{
101    panic("RubyTester::CpuPort::recvAtomic() not implemented!\n");
102    return 0;
103}
104
105bool
106RubyTester::CpuPort::recvTiming(PacketPtr pkt)
107{
108    // retrieve the subblock and call hitCallback
109    RubyTester::SenderState* senderState =
110        safe_cast<RubyTester::SenderState*>(pkt->senderState);
111    SubBlock* subblock = senderState->subBlock;
112    assert(subblock != NULL);
113
114    // pop the sender state from the packet
115    pkt->senderState = senderState->saved;
116
117    tester->hitCallback(idx, subblock);
118
119    // Now that the tester has completed, delete the senderState
120    // (includes sublock) and the packet, then return
121    delete senderState;
122    delete pkt->req;
123    delete pkt;
124    return true;
125}
126
127Port*
128RubyTester::getCpuPort(int idx)
129{
130    assert(idx >= 0 && idx < ports.size());
131
132    return ports[idx];
133}
134
135void
136RubyTester::hitCallback(NodeID proc, SubBlock* data)
137{
138    // Mark that we made progress
139    m_last_progress_vector[proc] = g_eventQueue_ptr->getTime();
140
141    DPRINTF(RubyTest, "completed request for proc: %d\n", proc);
142    DPRINTF(RubyTest, "addr: 0x%x, size: %d, data: ",
143            data->getAddress(), data->getSize());
144    for (int byte = 0; byte < data->getSize(); byte++) {
145        DPRINTF(RubyTest, "%d", data->getByte(byte));
146    }
147    DPRINTF(RubyTest, "\n");
148
149    // This tells us our store has 'completed' or for a load gives us
150    // back the data to make the check
151    Check* check_ptr = m_checkTable_ptr->getCheck(data->getAddress());
152    assert(check_ptr != NULL);
153    check_ptr->performCallback(proc, data);
154}
155
156void
157RubyTester::wakeup()
158{
159    if (m_checks_completed < m_checks_to_complete) {
160        // Try to perform an action or check
161        Check* check_ptr = m_checkTable_ptr->getRandomCheck();
162        assert(check_ptr != NULL);
163        check_ptr->initiate();
164
165        checkForDeadlock();
166
167        schedule(checkStartEvent, curTick() + m_wakeup_frequency);
168    } else {
169        exitSimLoop("Ruby Tester completed");
170    }
171}
172
173void
174RubyTester::checkForDeadlock()
175{
176    int size = m_last_progress_vector.size();
177    Time current_time = g_eventQueue_ptr->getTime();
178    for (int processor = 0; processor < size; processor++) {
179        if ((current_time - m_last_progress_vector[processor]) >
180                m_deadlock_threshold) {
181            panic("Deadlock detected: current_time: %d last_progress_time: %d "
182                  "difference:  %d processor: %d\n",
183                  current_time, m_last_progress_vector[processor],
184                  current_time - m_last_progress_vector[processor], processor);
185        }
186    }
187}
188
189void
190RubyTester::print(std::ostream& out) const
191{
192    out << "[RubyTester]" << std::endl;
193}
194
195RubyTester *
196RubyTesterParams::create()
197{
198    return new RubyTester(this);
199}
200