SeriesRequestGenerator.cc revision 7553 
18012Ssaidi@eecs.umich.edu/*
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298013Sbinkertn@umich.edu
308012Ssaidi@eecs.umich.edu#include "cpu/directedtest/RubyDirectedTester.hh"
317997Ssaidi@eecs.umich.edu#include "cpu/directedtest/DirectedGenerator.hh"
328013Sbinkertn@umich.edu#include "cpu/directedtest/SeriesRequestGenerator.hh"
337997Ssaidi@eecs.umich.edu
347997Ssaidi@eecs.umich.eduSeriesRequestGenerator::SeriesRequestGenerator(const Params *p)
357997Ssaidi@eecs.umich.edu    : DirectedGenerator(p)
367997Ssaidi@eecs.umich.edu{
377997Ssaidi@eecs.umich.edu    m_status = SeriesRequestGeneratorStatus_Thinking;
387997Ssaidi@eecs.umich.edu    m_active_node = 0;
397997Ssaidi@eecs.umich.edu    m_address = 0x0;
407997Ssaidi@eecs.umich.edu    m_addr_increment_size = p->addr_increment_size;
417997Ssaidi@eecs.umich.edu    m_issue_writes = p->issue_writes;
427997Ssaidi@eecs.umich.edu}
437997Ssaidi@eecs.umich.edu
447997Ssaidi@eecs.umich.eduSeriesRequestGenerator::~SeriesRequestGenerator()
457997Ssaidi@eecs.umich.edu{
467997Ssaidi@eecs.umich.edu}
477997Ssaidi@eecs.umich.edu
487997Ssaidi@eecs.umich.edubool
497997Ssaidi@eecs.umich.eduSeriesRequestGenerator::initiate()
507997Ssaidi@eecs.umich.edu{
517997Ssaidi@eecs.umich.edu    DPRINTF(DirectedTest, "initiating request\n");
527997Ssaidi@eecs.umich.edu    assert(m_status == SeriesRequestGeneratorStatus_Thinking);
53
54    RubyDirectedTester::CpuPort* port =
55        safe_cast<RubyDirectedTester::CpuPort*>(m_directed_tester->
56                                              getCpuPort(m_active_node));
57
58    Request::Flags flags;
59
60    // For simplicity, requests are assumed to be 1 byte-sized
61    Request *req = new Request(m_address, 1, flags);
62
63    Packet::Command cmd;
64    if (m_issue_writes) {
65        cmd = MemCmd::WriteReq;
66    } else {
67        cmd = MemCmd::ReadReq;
68    }
69    PacketPtr pkt = new Packet(req, cmd, m_active_node);
70    uint8_t* dummyData = new uint8_t;
71    *dummyData = 0;
72    pkt->dataDynamic(dummyData);
73
74    if (port->sendTiming(pkt)) {
75        DPRINTF(DirectedTest, "initiating request - successful\n");
76        m_status = SeriesRequestGeneratorStatus_Request_Pending;
77        return true;
78    } else {
79        // If the packet did not issue, must delete
80        // Note: No need to delete the data, the packet destructor
81        // will delete it
82        delete pkt->req;
83        delete pkt;
84
85        DPRINTF(DirectedTest, "failed to initiate request - sequencer not ready\n");
86        return false;
87    }
88}
89
90void
91SeriesRequestGenerator::performCallback(uint proc, Addr address)
92{
93    assert(m_active_node == proc);
94    assert(m_address == address);
95    assert(m_status == SeriesRequestGeneratorStatus_Request_Pending);
96
97    m_status = SeriesRequestGeneratorStatus_Thinking;
98    m_active_node++;
99    if (m_active_node == m_num_cpus) {
100        //
101        // Cycle of requests completed, increment cycle completions and restart
102        // at cpu zero
103        //
104        m_directed_tester->incrementCycleCompletions();
105        m_address += m_addr_increment_size;
106        m_active_node = 0;
107    }
108}
109
110SeriesRequestGenerator *
111SeriesRequestGeneratorParams::create()
112{
113    return new SeriesRequestGenerator(this);
114}
115