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
|
/*
* Copyright (c) 1999-2005 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.
*/
/*
* $Id$
*
*/
// CoherenceRequestType
enumeration(CoherenceRequestType, desc="...") {
GETX, desc="Get eXclusive";
GETS, desc="Get Shared";
}
// PersistentType
enumeration(PersistentRequestType, desc="...") {
GETX_PERSISTENT, desc="...";
GETS_PERSISTENT, desc="...";
DEACTIVATE_PERSISTENT,desc="...";
}
// CoherenceResponseType
enumeration(CoherenceResponseType, desc="...") {
DATA_OWNER, desc="Data";
ACK_OWNER, desc="data-less owner token";
DATA_SHARED, desc="Data";
ACK, desc="ACKnowledgment";
WB_TOKENS, desc="L1 to L2 writeback";
WB_SHARED_DATA, desc="L1 to L2 writeback with data";
WB_OWNED, desc="L1 to L2 writeback with data";
INV, desc="L1 informing L2 of loss of all tokens";
}
// PersistentMsg
structure(PersistentMsg, desc="...", interface="Message") {
Addr addr, desc="Physical address for this request";
PersistentRequestType Type, desc="Type of starvation request";
MachineID Requestor, desc="Node who initiated the request";
NetDest Destination, desc="Destination set";
MessageSizeType MessageSize, desc="size category of the message";
RubyAccessMode AccessMode, desc="user/supervisor access type";
PrefetchBit Prefetch, desc="Is this a prefetch request";
bool functionalRead(Packet *pkt) {
// No data in persistent messages
return false;
}
bool functionalWrite(Packet *pkt) {
// No data in persistent messages
return false;
}
}
// RequestMsg
structure(RequestMsg, desc="...", interface="Message") {
Addr addr, desc="Physical address for this request";
CoherenceRequestType Type, desc="Type of request (GetS, GetX, PutX, etc)";
MachineID Requestor, desc="Node who initiated the request";
NetDest Destination, desc="Multicast destination mask";
bool isLocal, desc="Is this request from a local L1";
int RetryNum, desc="retry sequence number";
MessageSizeType MessageSize, desc="size category of the message";
RubyAccessMode AccessMode, desc="user/supervisor access type";
PrefetchBit Prefetch, desc="Is this a prefetch request";
bool functionalRead(Packet *pkt) {
// No data in request messages
return false;
}
bool functionalWrite(Packet *pkt) {
// No data in request messages
return false;
}
}
// ResponseMsg
structure(ResponseMsg, desc="...", interface="Message") {
Addr addr, desc="Physical address for this request";
CoherenceResponseType Type, desc="Type of response (Ack, Data, etc)";
MachineID Sender, desc="Node who sent the data";
NetDest Destination, desc="Node to whom the data is sent";
int Tokens, desc="Number of tokens being transfered for this line";
DataBlock DataBlk, desc="data for the cache line";
bool Dirty, desc="Is the data dirty (different than memory)?";
MessageSizeType MessageSize, desc="size category of the message";
bool functionalRead(Packet *pkt) {
// No check being carried out on the message type. Would be added later.
return testAndRead(addr, DataBlk, pkt);
}
bool functionalWrite(Packet *pkt) {
// No check required since all messages are written.
return testAndWrite(addr, DataBlk, pkt);
}
}
enumeration(DMARequestType, desc="...", default="DMARequestType_NULL") {
READ, desc="Memory Read";
WRITE, desc="Memory Write";
NULL, desc="Invalid";
}
enumeration(DMAResponseType, desc="...", default="DMAResponseType_NULL") {
DATA, desc="DATA read";
ACK, desc="ACK write";
NULL, desc="Invalid";
}
structure(DMARequestMsg, desc="...", interface="Message") {
DMARequestType Type, desc="Request type (read/write)";
Addr PhysicalAddress, desc="Physical address for this request";
Addr LineAddress, desc="Line address for this request";
MachineID Requestor, desc="Node who initiated the request";
NetDest Destination, desc="Destination";
DataBlock DataBlk, desc="DataBlk attached to this request";
int Len, desc="The length of the request";
MessageSizeType MessageSize, desc="size category of the message";
bool functionalRead(Packet *pkt) {
return false;
}
bool functionalWrite(Packet *pkt) {
return testAndWrite(LineAddress, DataBlk, pkt);
}
}
structure(DMAResponseMsg, desc="...", interface="Message") {
DMAResponseType Type, desc="Response type (DATA/ACK)";
Addr PhysicalAddress, desc="Physical address for this request";
Addr LineAddress, desc="Line address for this request";
NetDest Destination, desc="Destination";
DataBlock DataBlk, desc="DataBlk attached to this request";
MessageSizeType MessageSize, desc="size category of the message";
bool functionalRead(Packet *pkt) {
return false;
}
bool functionalWrite(Packet *pkt) {
return testAndWrite(LineAddress, DataBlk, pkt);
}
}
|
