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/*
* 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.
*/
/*
* $Id$
*
*/
// MemoryRequestType used in MemoryMsg
enumeration(MemoryRequestType, desc="...") {
// Southbound request: from directory to memory cache
// or directory to memory or memory cache to memory
MEMORY_READ, desc="Read request to memory";
MEMORY_WB, desc="Write back data to memory";
// response from memory to directory
// (These are currently unused!)
MEMORY_DATA, desc="Data read from memory";
MEMORY_ACK, desc="Write to memory acknowledgement";
}
// Message to and from Memory Control
structure(MemoryMsg, desc="...", interface="Message") {
Addr addr, desc="Physical address for this request";
MemoryRequestType Type, desc="Type of memory request (MEMORY_READ or MEMORY_WB)";
MachineID Sender, desc="What component sent the data";
MachineID OriginalRequestorMachId, desc="What component originally requested";
DataBlock DataBlk, desc="Data to writeback";
MessageSizeType MessageSize, desc="size category of the message";
// Not all fields used by all protocols:
PrefetchBit Prefetch, desc="Is this a prefetch request";
bool ReadX, desc="Exclusive";
int Acks, desc="How many acks to expect";
bool functionalRead(Packet *pkt) {
return testAndRead(addr, DataBlk, pkt);
}
bool functionalWrite(Packet *pkt) {
return testAndWrite(addr, DataBlk, pkt);
}
}
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