68 lines
2.8 KiB
Text
68 lines
2.8 KiB
Text
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/*
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* Copyright (c) 1999-2005 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* $Id$
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*
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*/
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// MemoryRequestType used in MemoryMsg
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enumeration(MemoryRequestType, desc="...") {
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// Southbound request: from directory to memory cache
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// or directory to memory or memory cache to memory
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MEMORY_READ, desc="Read request to memory";
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MEMORY_WB, desc="Write back data to memory";
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// response from memory to directory
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// (These are currently unused!)
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MEMORY_DATA, desc="Data read from memory";
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MEMORY_ACK, desc="Write to memory acknowledgement";
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}
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// Message to and from Memory Control
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structure(MemoryMsg, desc="...", interface="Message") {
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Address Address, desc="Physical address for this request";
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MemoryRequestType Type, desc="Type of memory request (MEMORY_READ or MEMORY_WB)";
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MachineID Sender, desc="What component sent the data";
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MachineID OriginalRequestorMachId, desc="What component originally requested";
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DataBlock DataBlk, desc="Data to writeback";
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MessageSizeType MessageSize, desc="size category of the message";
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// Not all fields used by all protocols:
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PrefetchBit Prefetch, desc="Is this a prefetch request";
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bool ReadX, desc="Exclusive";
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int Acks, desc="How many acks to expect";
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}
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