1/*
2 * Copyright (c) 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;

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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#include <memory>
30
31#include "debug/RubyDma.hh"
32#include "debug/RubyStats.hh"
33#include "mem/protocol/SequencerMsg.hh"
34#include "mem/protocol/SequencerRequestType.hh"
35#include "mem/ruby/system/DMASequencer.hh"
36#include "mem/ruby/system/RubySystem.hh"
37
38DMASequencer::DMASequencer(const Params *p)
39 : RubyPort(p)
40{
41}
42
43void
44DMASequencer::init()
45{
46 RubyPort::init();
47 m_is_busy = false;
48 m_data_block_mask = ~ (~0 << RubySystem::getBlockSizeBits());
49}
50
51RequestStatus
52DMASequencer::makeRequest(PacketPtr pkt)
53{
54 if (m_is_busy) {
55 return RequestStatus_BufferFull;
56 }
57
58 Addr paddr = pkt->getAddr();

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