DMASequencer.hh revision 6922:1620cffaa3b6 
1
2#ifndef DMASEQUENCER_H
3#define DMASEQUENCER_H
4
5#include <ostream>
6#include "mem/ruby/common/DataBlock.hh"
7#include "mem/ruby/system/RubyPort.hh"
8
9#include "params/DMASequencer.hh"
10
11struct DMARequest {
12  uint64_t start_paddr;
13  int len;
14  bool write;
15  int bytes_completed;
16  int bytes_issued;
17  uint8* data;
18  PacketPtr pkt;
19};
20
21class DMASequencer :public RubyPort {
22public:
23    typedef DMASequencerParams Params;
24  DMASequencer(const Params *);
25  void init();
26  /* external interface */
27  RequestStatus makeRequest(const RubyRequest & request);
28  bool busy() { return m_is_busy;}
29
30  /* SLICC callback */
31  void dataCallback(const DataBlock & dblk);
32  void ackCallback();
33
34  void printConfig(std::ostream & out);
35
36private:
37  void issueNext();
38
39private:
40  bool m_is_busy;
41  uint64_t m_data_block_mask;
42  DMARequest active_request;
43  int num_active_requests;
44};
45
46#endif // DMACONTROLLER_H
47