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