summaryrefslogtreecommitdiff
path: root/src/mem/ruby/system/RubyPort.hh
blob: f2841e56108ac623a68fcf53bcc12fb74e4a3f72 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/*
 * Copyright (c) 2012-2013 ARM Limited
 * All rights reserved.
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * Copyright (c) 2009 Advanced Micro Devices, Inc.
 * Copyright (c) 2011 Mark D. Hill and David A. Wood
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __MEM_RUBY_SYSTEM_RUBYPORT_HH__
#define __MEM_RUBY_SYSTEM_RUBYPORT_HH__

#include <cassert>
#include <string>

#include "mem/protocol/RequestStatus.hh"
#include "mem/ruby/network/MessageBuffer.hh"
#include "mem/ruby/system/System.hh"
#include "mem/mem_object.hh"
#include "mem/tport.hh"
#include "params/RubyPort.hh"

class AbstractController;

class RubyPort : public MemObject
{
  public:
    class MemMasterPort : public QueuedMasterPort
    {
      private:
        ReqPacketQueue reqQueue;
        SnoopRespPacketQueue snoopRespQueue;

      public:
        MemMasterPort(const std::string &_name, RubyPort *_port);

      protected:
        bool recvTimingResp(PacketPtr pkt);
        void recvRangeChange() {}
    };

    class MemSlavePort : public QueuedSlavePort
    {
      private:
        RespPacketQueue queue;
        bool access_backing_store;

      public:
        MemSlavePort(const std::string &_name, RubyPort *_port,
                     bool _access_backing_store, PortID id);
        void hitCallback(PacketPtr pkt);
        void evictionCallback(Addr address);

      protected:
        bool recvTimingReq(PacketPtr pkt);

        Tick recvAtomic(PacketPtr pkt)
        { panic("RubyPort::MemSlavePort::recvAtomic() not implemented!\n"); }

        void recvFunctional(PacketPtr pkt);

        AddrRangeList getAddrRanges() const
        { AddrRangeList ranges; return ranges; }

      private:
        bool isPhysMemAddress(Addr addr) const;
    };

    class PioMasterPort : public QueuedMasterPort
    {
      private:
        ReqPacketQueue reqQueue;
        SnoopRespPacketQueue snoopRespQueue;

      public:
        PioMasterPort(const std::string &_name, RubyPort *_port);

      protected:
        bool recvTimingResp(PacketPtr pkt);
        void recvRangeChange();
    };

    class PioSlavePort : public QueuedSlavePort
    {
      private:
        RespPacketQueue queue;

      public:
        PioSlavePort(const std::string &_name, RubyPort *_port);

      protected:
        bool recvTimingReq(PacketPtr pkt);

        Tick recvAtomic(PacketPtr pkt)
        { panic("recvAtomic not supported with ruby!"); }

        void recvFunctional(PacketPtr pkt)
        { panic("recvFunctional should never be called on pio slave port!"); }

        AddrRangeList getAddrRanges() const;
    };

    struct SenderState : public Packet::SenderState
    {
        MemSlavePort *port;
        SenderState(MemSlavePort * _port) : port(_port)
        {}
     };

    typedef RubyPortParams Params;
    RubyPort(const Params *p);
    virtual ~RubyPort() {}

    void init();

    BaseMasterPort &getMasterPort(const std::string &if_name,
                                  PortID idx = InvalidPortID);
    BaseSlavePort &getSlavePort(const std::string &if_name,
                                PortID idx = InvalidPortID);

    virtual RequestStatus makeRequest(PacketPtr pkt) = 0;
    virtual int outstandingCount() const = 0;
    virtual bool isDeadlockEventScheduled() const = 0;
    virtual void descheduleDeadlockEvent() = 0;

    //
    // Called by the controller to give the sequencer a pointer.
    // A pointer to the controller is needed for atomic support.
    //
    void setController(AbstractController* _cntrl) { m_controller = _cntrl; }
    uint32_t getId() { return m_version; }
    DrainState drain() M5_ATTR_OVERRIDE;

  protected:
    void ruby_hit_callback(PacketPtr pkt);
    void testDrainComplete();
    void ruby_eviction_callback(Addr address);

    /**
     * Called by the PIO port when receiving a timing response.
     *
     * @param pkt Response packet
     * @param master_port_id Port id of the PIO port
     *
     * @return Whether successfully sent
     */
    bool recvTimingResp(PacketPtr pkt, PortID master_port_id);

    RubySystem *m_ruby_system;
    uint32_t m_version;
    AbstractController* m_controller;
    MessageBuffer* m_mandatory_q_ptr;
    bool m_usingRubyTester;
    System* system;

  private:
    void addToRetryList(MemSlavePort * port)
    {
        if (std::find(retryList.begin(), retryList.end(), port) !=
               retryList.end()) return;
        retryList.push_back(port);
    }

    PioMasterPort pioMasterPort;
    PioSlavePort pioSlavePort;
    MemMasterPort memMasterPort;
    MemSlavePort memSlavePort;
    unsigned int gotAddrRanges;

    /** Vector of M5 Ports attached to this Ruby port. */
    typedef std::vector<MemSlavePort *>::iterator CpuPortIter;
    std::vector<MemSlavePort *> slave_ports;
    std::vector<PioMasterPort *> master_ports;

    //
    // Based on similar code in the M5 bus.  Stores pointers to those ports
    // that should be called when the Sequencer becomes available after a stall.
    //
    std::vector<MemSlavePort *> retryList;
};

#endif // __MEM_RUBY_SYSTEM_RUBYPORT_HH__