1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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 * Authors: Steve Reinhardt
29 */
30
31#ifndef __CPU_SIMPLE_ATOMIC_HH__
32#define __CPU_SIMPLE_ATOMIC_HH__
33
34#include "cpu/simple/base.hh"
35
36class AtomicSimpleCPU : public BaseSimpleCPU
37{
38 public:
39
40 struct Params : public BaseSimpleCPU::Params {
41 int width;
42 bool simulate_stalls;
43 };
44
45 AtomicSimpleCPU(Params *params);
46 virtual ~AtomicSimpleCPU();
47
48 virtual void init();
49
50 public:
51 //
52 enum Status {
53 Running,
54 Idle,
55 SwitchedOut
56 };
57
58 protected:
59 Status _status;
60
61 Status status() const { return _status; }
62
63 private:
64
65 struct TickEvent : public Event
66 {
67 AtomicSimpleCPU *cpu;
68
69 TickEvent(AtomicSimpleCPU *c);
70 void process();
71 const char *description();
72 };
73
74 TickEvent tickEvent;
75
76 const int width;
77 const bool simulate_stalls;
78
79 // main simulation loop (one cycle)
80 void tick();
81
82 class CpuPort : public Port
83 {
84
85 AtomicSimpleCPU *cpu;
86
87 public:
88
89 CpuPort(const std::string &_name, AtomicSimpleCPU *_cpu)
90 : Port(_name, _cpu), cpu(_cpu)
91 { }
92
93 bool snoopRangeSent;
94
95 protected:
96
97 virtual bool recvTiming(PacketPtr pkt);
98
99 virtual Tick recvAtomic(PacketPtr pkt);
100
101 virtual void recvFunctional(PacketPtr pkt);
102
103 virtual void recvStatusChange(Status status);
104
105 virtual void recvRetry();
106
107 virtual void getDeviceAddressRanges(AddrRangeList &resp,
108 AddrRangeList &snoop)
109 { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
110
111 };
112 CpuPort icachePort;
113 CpuPort dcachePort;
114
115 Request *ifetch_req;
116 PacketPtr ifetch_pkt;
117 Request *data_read_req;
118 PacketPtr data_read_pkt;
119 Request *data_write_req;
120 PacketPtr data_write_pkt;
| 1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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 * Authors: Steve Reinhardt
29 */
30
31#ifndef __CPU_SIMPLE_ATOMIC_HH__
32#define __CPU_SIMPLE_ATOMIC_HH__
33
34#include "cpu/simple/base.hh"
35
36class AtomicSimpleCPU : public BaseSimpleCPU
37{
38 public:
39
40 struct Params : public BaseSimpleCPU::Params {
41 int width;
42 bool simulate_stalls;
43 };
44
45 AtomicSimpleCPU(Params *params);
46 virtual ~AtomicSimpleCPU();
47
48 virtual void init();
49
50 public:
51 //
52 enum Status {
53 Running,
54 Idle,
55 SwitchedOut
56 };
57
58 protected:
59 Status _status;
60
61 Status status() const { return _status; }
62
63 private:
64
65 struct TickEvent : public Event
66 {
67 AtomicSimpleCPU *cpu;
68
69 TickEvent(AtomicSimpleCPU *c);
70 void process();
71 const char *description();
72 };
73
74 TickEvent tickEvent;
75
76 const int width;
77 const bool simulate_stalls;
78
79 // main simulation loop (one cycle)
80 void tick();
81
82 class CpuPort : public Port
83 {
84
85 AtomicSimpleCPU *cpu;
86
87 public:
88
89 CpuPort(const std::string &_name, AtomicSimpleCPU *_cpu)
90 : Port(_name, _cpu), cpu(_cpu)
91 { }
92
93 bool snoopRangeSent;
94
95 protected:
96
97 virtual bool recvTiming(PacketPtr pkt);
98
99 virtual Tick recvAtomic(PacketPtr pkt);
100
101 virtual void recvFunctional(PacketPtr pkt);
102
103 virtual void recvStatusChange(Status status);
104
105 virtual void recvRetry();
106
107 virtual void getDeviceAddressRanges(AddrRangeList &resp,
108 AddrRangeList &snoop)
109 { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
110
111 };
112 CpuPort icachePort;
113 CpuPort dcachePort;
114
115 Request *ifetch_req;
116 PacketPtr ifetch_pkt;
117 Request *data_read_req;
118 PacketPtr data_read_pkt;
119 Request *data_write_req;
120 PacketPtr data_write_pkt;
|
121
122 bool dcache_access;
123 Tick dcache_latency;
124
125 public:
126
127 virtual Port *getPort(const std::string &if_name, int idx = -1);
128
129 virtual void serialize(std::ostream &os);
130 virtual void unserialize(Checkpoint *cp, const std::string §ion);
131 virtual void resume();
132
133 void switchOut();
134 void takeOverFrom(BaseCPU *oldCPU);
135
136 virtual void activateContext(int thread_num, int delay);
137 virtual void suspendContext(int thread_num);
138
139 template <class T>
140 Fault read(Addr addr, T &data, unsigned flags);
141
142 template <class T>
143 Fault write(T data, Addr addr, unsigned flags, uint64_t *res);
144};
145
146#endif // __CPU_SIMPLE_ATOMIC_HH__
| 122
123 bool dcache_access;
124 Tick dcache_latency;
125
126 public:
127
128 virtual Port *getPort(const std::string &if_name, int idx = -1);
129
130 virtual void serialize(std::ostream &os);
131 virtual void unserialize(Checkpoint *cp, const std::string §ion);
132 virtual void resume();
133
134 void switchOut();
135 void takeOverFrom(BaseCPU *oldCPU);
136
137 virtual void activateContext(int thread_num, int delay);
138 virtual void suspendContext(int thread_num);
139
140 template <class T>
141 Fault read(Addr addr, T &data, unsigned flags);
142
143 template <class T>
144 Fault write(T data, Addr addr, unsigned flags, uint64_t *res);
145};
146
147#endif // __CPU_SIMPLE_ATOMIC_HH__
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