1/* 2 * Copyright (c) 1999-2008 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; --- 12 unchanged lines hidden (view full) --- 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_SEQUENCER_HH__ 30#define __MEM_RUBY_SYSTEM_SEQUENCER_HH__ |
31 |
32#include "mem/gems_common/Map.hh" |
33#include "mem/protocol/AccessModeType.hh" |
34#include "mem/protocol/CacheRequestType.hh" |
35#include "mem/protocol/GenericMachineType.hh" 36#include "mem/protocol/PrefetchBit.hh" |
37#include "mem/ruby/common/Address.hh" |
38#include "mem/ruby/common/Consumer.hh" 39#include "mem/ruby/common/Global.hh" 40#include "mem/ruby/system/RubyPort.hh" |
41 42class DataBlock; 43class CacheMsg; 44class MachineID; 45class CacheMemory; 46 47class RubySequencerParams; 48 |
49struct SequencerRequest 50{ 51 RubyRequest ruby_request; 52 Time issue_time; |
53 |
54 SequencerRequest(const RubyRequest & _ruby_request, Time _issue_time) 55 : ruby_request(_ruby_request), issue_time(_issue_time) 56 {} |
57}; 58 59std::ostream& operator<<(std::ostream& out, const SequencerRequest& obj); 60 |
61class Sequencer : public RubyPort, public Consumer 62{ 63 public: |
64 typedef RubySequencerParams Params; |
65 Sequencer(const Params *); 66 ~Sequencer(); |
67 |
68 // Public Methods 69 void wakeup(); // Used only for deadlock detection |
70 |
71 void printConfig(ostream& out) const; |
72 |
73 void printProgress(ostream& out) const; |
74 |
75 void writeCallback(const Address& address, DataBlock& data); 76 void readCallback(const Address& address, DataBlock& data); |
77 |
78 RequestStatus makeRequest(const RubyRequest & request); 79 RequestStatus getRequestStatus(const RubyRequest& request); 80 bool empty() const; |
81 |
82 void print(ostream& out) const; 83 void printStats(ostream & out) const; 84 void checkCoherence(const Address& address); |
85 |
86 void removeRequest(SequencerRequest* request); |
87 |
88 private: 89 bool tryCacheAccess(const Address& addr, CacheRequestType type, 90 const Address& pc, AccessModeType access_mode, 91 int size, DataBlock*& data_ptr); 92 void issueRequest(const RubyRequest& request); |
93 |
94 void hitCallback(SequencerRequest* request, DataBlock& data); 95 bool insertRequest(SequencerRequest* request); |
96 |
97 |
98 // Private copy constructor and assignment operator 99 Sequencer(const Sequencer& obj); 100 Sequencer& operator=(const Sequencer& obj); |
101 |
102 private: 103 int m_max_outstanding_requests; 104 int m_deadlock_threshold; |
105 |
106 CacheMemory* m_dataCache_ptr; 107 CacheMemory* m_instCache_ptr; |
108 |
109 Map<Address, SequencerRequest*> m_writeRequestTable; 110 Map<Address, SequencerRequest*> m_readRequestTable; 111 // Global outstanding request count, across all request tables 112 int m_outstanding_count; 113 bool m_deadlock_check_scheduled; |
114 |
115 int m_store_waiting_on_load_cycles; 116 int m_store_waiting_on_store_cycles; 117 int m_load_waiting_on_store_cycles; 118 int m_load_waiting_on_load_cycles; |
119 |
120 bool m_usingRubyTester; |
121 |
122 class SequencerWakeupEvent : public Event 123 { 124 private: 125 Sequencer *m_sequencer_ptr; |
126 |
127 public: 128 SequencerWakeupEvent(Sequencer *_seq) : m_sequencer_ptr(_seq) {} 129 void process() { m_sequencer_ptr->wakeup(); } 130 const char *description() const { return "Sequencer deadlock check"; } 131 }; |
132 |
133 SequencerWakeupEvent deadlockCheckEvent; |
134}; 135 |
136inline ostream& 137operator<<(ostream& out, const Sequencer& obj) |
138{ |
139 obj.print(out); 140 out << flush; 141 return out; |
142} 143 |
144#endif // __MEM_RUBY_SYSTEM_SEQUENCER_HH__ |
145 |