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/*
* Copyright (c) 1999-2008 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.
*/
// CoherenceRequestType
enumeration(CoherenceRequestType, desc="...") {
GETX, desc="Get eXclusive";
GETS, desc="Get Shared";
PUT, desc="Put Ownership";
WB_ACK, desc="Writeback ack";
WB_NACK, desc="Writeback neg. ack";
}
// CoherenceResponseType
enumeration(CoherenceResponseType, desc="...") {
ACK, desc="ACKnowledgment, responder does not have a copy";
ACK_SHARED, desc="ACKnowledgment, responder has a shared copy";
DATA, desc="Data, responder does not have a copy";
DATA_SHARED, desc="Data, responder has a shared copy";
DATA_EXCLUSIVE, desc="Data, responder was exclusive, gave us a copy, and they went to invalid";
WB_CLEAN, desc="Clean writeback";
WB_DIRTY, desc="Dirty writeback";
WB_EXCLUSIVE_CLEAN, desc="Clean writeback of exclusive data";
WB_EXCLUSIVE_DIRTY, desc="Dirty writeback of exclusive data";
UNBLOCK, desc="Unblock";
}
// TriggerType
enumeration(TriggerType, desc="...") {
ALL_ACKS, desc="See corresponding event";
ALL_ACKS_NO_SHARERS, desc="See corresponding event";
}
// TriggerMsg
structure(TriggerMsg, desc="...", interface="Message") {
Address Address, desc="Physical address for this request";
TriggerType Type, desc="Type of trigger";
}
// RequestMsg (and also forwarded requests)
structure(RequestMsg, desc="...", interface="NetworkMessage") {
Address Address, desc="Physical address for this request";
CoherenceRequestType Type, desc="Type of request (GetS, GetX, PutX, etc)";
NodeID Requestor, desc="Node who initiated the request";
NetDest Destination, desc="Multicast destination mask";
MessageSizeType MessageSize, desc="size category of the message";
}
// ResponseMsg (and also unblock requests)
structure(ResponseMsg, desc="...", interface="NetworkMessage") {
Address Address, desc="Physical address for this request";
CoherenceResponseType Type, desc="Type of response (Ack, Data, etc)";
NodeID Sender, desc="Node who sent the data";
NetDest Destination, desc="Node to whom the data is sent";
DataBlock DataBlk, desc="data for the cache line";
bool Dirty, desc="Is the data dirty (different than memory)?";
int Acks, desc="How many messages this counts as";
MessageSizeType MessageSize, desc="size category of the message";
}
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