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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#ifndef __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
30#define __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
31
32#include <ostream>
33
34#include "mem/ruby/common/DataBlock.hh"
35#include "mem/ruby/system/RubyPort.hh"
36#include "params/DMASequencer.hh"
37
38struct DMARequest
39{
40 uint64_t start_paddr;
41 int len;
42 bool write;
43 int bytes_completed;
44 int bytes_issued;
45 uint8* data;
46 PacketPtr pkt;
47};
48
49class DMASequencer : public RubyPort
50{
51 public:
52 typedef DMASequencerParams Params;
53 DMASequencer(const Params *);
54 void init();
55 /* external interface */
| 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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#ifndef __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
30#define __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
31
32#include <ostream>
33
34#include "mem/ruby/common/DataBlock.hh"
35#include "mem/ruby/system/RubyPort.hh"
36#include "params/DMASequencer.hh"
37
38struct DMARequest
39{
40 uint64_t start_paddr;
41 int len;
42 bool write;
43 int bytes_completed;
44 int bytes_issued;
45 uint8* data;
46 PacketPtr pkt;
47};
48
49class DMASequencer : public RubyPort
50{
51 public:
52 typedef DMASequencerParams Params;
53 DMASequencer(const Params *);
54 void init();
55 /* external interface */
|
57 bool busy() { return m_is_busy;}
58
59 /* SLICC callback */
60 void dataCallback(const DataBlock & dblk);
61 void ackCallback();
62
63 void printConfig(std::ostream & out);
64
65 private:
66 void issueNext();
67
68 private:
69 bool m_is_busy;
70 uint64_t m_data_block_mask;
71 DMARequest active_request;
72 int num_active_requests;
73};
74
75#endif // __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
| 57 bool busy() { return m_is_busy;}
58
59 /* SLICC callback */
60 void dataCallback(const DataBlock & dblk);
61 void ackCallback();
62
63 void printConfig(std::ostream & out);
64
65 private:
66 void issueNext();
67
68 private:
69 bool m_is_busy;
70 uint64_t m_data_block_mask;
71 DMARequest active_request;
72 int num_active_requests;
73};
74
75#endif // __MEM_RUBY_SYSTEM_DMASEQUENCER_HH__
|