RubyTester.cc revision 8184 
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 "mem/ruby/common/Global.hh"
34#include "mem/ruby/common/SubBlock.hh"
35#include "mem/ruby/eventqueue/RubyEventQueue.hh"
36#include "mem/ruby/system/System.hh"
37#include "sim/sim_exit.hh"
38
39RubyTester::RubyTester(const Params *p)
40  : MemObject(p), checkStartEvent(this),
41    m_checks_to_complete(p->checks_to_complete),
42    m_deadlock_threshold(p->deadlock_threshold),
43    m_wakeup_frequency(p->wakeup_frequency),
44    m_check_flush(p->check_flush)
45{
46    m_checks_completed = 0;
47
48    // add the check start event to the event queue
49    schedule(checkStartEvent, 1);
50}
51
52RubyTester::~RubyTester()
53{
54    delete m_checkTable_ptr;
55    for (int i = 0; i < ports.size(); i++)
56        delete ports[i];
57}
58
59void
60RubyTester::init()
61{
62    assert(ports.size() > 0);
63
64    m_last_progress_vector.resize(ports.size());
65    for (int i = 0; i < m_last_progress_vector.size(); i++) {
66        m_last_progress_vector[i] = 0;
67    }
68
69    m_num_cpu_sequencers = ports.size();
70
71    m_checkTable_ptr = new CheckTable(m_num_cpu_sequencers, this);
72}
73
74Port *
75RubyTester::getPort(const std::string &if_name, int idx)
76{
77    if (if_name != "cpuPort") {
78        panic("RubyTester::getPort: unknown port %s requested", if_name);
79    }
80
81    if (idx >= (int)ports.size()) {
82        ports.resize(idx + 1);
83    }
84
85    if (ports[idx] != NULL) {
86        panic("RubyTester::getPort: port %d already assigned", idx);
87    }
88
89    CpuPort *port = new CpuPort(csprintf("%s-port%d", name(), idx), this, idx);
90
91    ports[idx] = port;
92    return port;
93}
94
95Tick
96RubyTester::CpuPort::recvAtomic(PacketPtr pkt)
97{
98    panic("RubyTester::CpuPort::recvAtomic() not implemented!\n");
99    return 0;
100}
101
102bool
103RubyTester::CpuPort::recvTiming(PacketPtr pkt)
104{
105    // retrieve the subblock and call hitCallback
106    RubyTester::SenderState* senderState =
107        safe_cast<RubyTester::SenderState*>(pkt->senderState);
108    SubBlock* subblock = senderState->subBlock;
109    assert(subblock != NULL);
110
111    // pop the sender state from the packet
112    pkt->senderState = senderState->saved;
113
114    tester->hitCallback(idx, subblock);
115
116    // Now that the tester has completed, delete the senderState
117    // (includes sublock) and the packet, then return
118    delete senderState;
119    delete pkt->req;
120    delete pkt;
121    return true;
122}
123
124Port*
125RubyTester::getCpuPort(int idx)
126{
127    assert(idx >= 0 && idx < ports.size());
128
129    return ports[idx];
130}
131
132void
133RubyTester::hitCallback(NodeID proc, SubBlock* data)
134{
135    // Mark that we made progress
136    m_last_progress_vector[proc] = g_eventQueue_ptr->getTime();
137
138    DPRINTF(RubyTest, "completed request for proc: %d\n", proc);
139    DPRINTF(RubyTest, "addr: 0x%x, size: %d, data: ",
140            data->getAddress(), data->getSize());
141    for (int byte = 0; byte < data->getSize(); byte++) {
142        DPRINTF(RubyTest, "%d", data->getByte(byte));
143    }
144    DPRINTF(RubyTest, "\n");
145
146    // This tells us our store has 'completed' or for a load gives us
147    // back the data to make the check
148    Check* check_ptr = m_checkTable_ptr->getCheck(data->getAddress());
149    assert(check_ptr != NULL);
150    check_ptr->performCallback(proc, data);
151}
152
153void
154RubyTester::wakeup()
155{
156    if (m_checks_completed < m_checks_to_complete) {
157        // Try to perform an action or check
158        Check* check_ptr = m_checkTable_ptr->getRandomCheck();
159        assert(check_ptr != NULL);
160        check_ptr->initiate();
161
162        checkForDeadlock();
163
164        schedule(checkStartEvent, curTick() + m_wakeup_frequency);
165    } else {
166        exitSimLoop("Ruby Tester completed");
167    }
168}
169
170void
171RubyTester::checkForDeadlock()
172{
173    int size = m_last_progress_vector.size();
174    Time current_time = g_eventQueue_ptr->getTime();
175    for (int processor = 0; processor < size; processor++) {
176        if ((current_time - m_last_progress_vector[processor]) >
177                m_deadlock_threshold) {
178            panic("Deadlock detected: current_time: %d last_progress_time: %d "
179                  "difference:  %d processor: %d\n",
180                  current_time, m_last_progress_vector[processor],
181                  current_time - m_last_progress_vector[processor], processor);
182        }
183    }
184}
185
186void
187RubyTester::print(std::ostream& out) const
188{
189    out << "[RubyTester]" << std::endl;
190}
191
192RubyTester *
193RubyTesterParams::create()
194{
195    return new RubyTester(this);
196}
197