SeriesRequestGenerator.cc revision 8950:a6830d615eff 
1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
3 * Copyright (c) 2009-2010 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 "cpu/testers/directedtest/DirectedGenerator.hh"
31#include "cpu/testers/directedtest/RubyDirectedTester.hh"
32#include "cpu/testers/directedtest/SeriesRequestGenerator.hh"
33#include "debug/DirectedTest.hh"
34
35SeriesRequestGenerator::SeriesRequestGenerator(const Params *p)
36    : DirectedGenerator(p)
37{
38    m_status = SeriesRequestGeneratorStatus_Thinking;
39    m_active_node = 0;
40    m_address = 0x0;
41    m_addr_increment_size = p->addr_increment_size;
42    m_issue_writes = p->issue_writes;
43}
44
45SeriesRequestGenerator::~SeriesRequestGenerator()
46{
47}
48
49bool
50SeriesRequestGenerator::initiate()
51{
52    DPRINTF(DirectedTest, "initiating request\n");
53    assert(m_status == SeriesRequestGeneratorStatus_Thinking);
54
55    MasterPort* port = m_directed_tester->getCpuPort(m_active_node);
56
57    Request::Flags flags;
58
59    // For simplicity, requests are assumed to be 1 byte-sized
60    Request *req = new Request(m_address, 1, flags, masterId);
61
62    Packet::Command cmd;
63    if (m_issue_writes) {
64        cmd = MemCmd::WriteReq;
65    } else {
66        cmd = MemCmd::ReadReq;
67    }
68    PacketPtr pkt = new Packet(req, cmd);
69    uint8_t* dummyData = new uint8_t;
70    *dummyData = 0;
71    pkt->dataDynamic(dummyData);
72
73    if (port->sendTiming(pkt)) {
74        DPRINTF(DirectedTest, "initiating request - successful\n");
75        m_status = SeriesRequestGeneratorStatus_Request_Pending;
76        return true;
77    } else {
78        // If the packet did not issue, must delete
79        // Note: No need to delete the data, the packet destructor
80        // will delete it
81        delete pkt->req;
82        delete pkt;
83
84        DPRINTF(DirectedTest, "failed to initiate request - sequencer not ready\n");
85        return false;
86    }
87}
88
89void
90SeriesRequestGenerator::performCallback(uint32_t proc, Addr address)
91{
92    assert(m_active_node == proc);
93    assert(m_address == address);
94    assert(m_status == SeriesRequestGeneratorStatus_Request_Pending);
95
96    m_status = SeriesRequestGeneratorStatus_Thinking;
97    m_active_node++;
98    if (m_active_node == m_num_cpus) {
99        //
100        // Cycle of requests completed, increment cycle completions and restart
101        // at cpu zero
102        //
103        m_directed_tester->incrementCycleCompletions();
104        m_address += m_addr_increment_size;
105        m_active_node = 0;
106    }
107}
108
109SeriesRequestGenerator *
110SeriesRequestGeneratorParams::create()
111{
112    return new SeriesRequestGenerator(this);
113}
114