eabb0cfc78
Some places I could have been using a forward decleration and that should be cleaned up as well.
SConscript:
Changed to move new memory object compilation to the top. See the errors right away.
Will also need to update all other objects that included the old memory system to use the new one. But not until we at least get the mem system compiling first.
mem/packet.hh:
Adding includes and typedefs to fix compilation errors
mem/request.hh:
Add definition for compilation issues
--HG--
extra : convert_revision : 34d9ae534a7a625445b981e81c7a1f856517cb04
124 lines
4.2 KiB
C++
124 lines
4.2 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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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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* @file
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* Declaration of the Packet Class, a packet is a transaction occuring
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* between a single level of the memory heirarchy (ie L1->L2).
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*/
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#ifndef __MEM_PACKET_HH__
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#define __MEM_PACKET_HH__
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#include "mem/request.hh"
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/** List of all commands associated with a packet. */
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enum Command
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{
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Read,
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Write
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};
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/** The result of a particular pakets request. */
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enum PacketResult
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{
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Success,
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BadAddress
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};
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class SenderState{};
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class Coherence{};
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typedef PacketDataPtr *unit8_t;
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/**
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* A Packet is the structure to handle requests between two levels
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* of the memory system. The Request is a global object that trancends
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* all of the memory heirarchy, but at each levels interface a packet
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* is created to transfer data/requests. For example, a request would
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* be used to initiate a request to go to memory/IOdevices, as the request
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* passes through the memory system several packets will be created. One
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* will be created to go between the L1 and L2 caches and another to go to
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* the next level and so forth.
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*
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* Packets are assumed to be returned in the case of a single response. If
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* the transaction has no response, then the consumer will delete the packet.
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*/
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struct Packet
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{
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/** The address of the request, could be virtual or physical (depending on
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cache configurations). */
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Addr addr;
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/** Flag structure to hold flags for this particular packet */
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uint64_t flags;
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/** A pointer to the overall request. */
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RequestPtr req;
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/** A virtual base opaque structure used to hold
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coherence status messages. */
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Coherence *coherence; // virtual base opaque,
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// assert(dynamic_cast<Foo>) etc.
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/** A virtual base opaque structure used to hold the senders state. */
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SenderState *senderState; // virtual base opaque,
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// assert(dynamic_cast<Foo>) etc.
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/** A pointer to the data being transfered. It can be differnt sizes
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at each level of the heirarchy so it belongs in the packet,
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not request*/
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PacketDataPtr data;
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/** Indicates the size of the request. */
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int size;
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/** A index of the source of the transaction. */
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short src;
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/** A index to the destination of the transaction. */
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short dest;
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/** The command of the transaction. */
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Command cmd;
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/** The result of the packet transaction. */
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PacketResult result;
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/** Accessor function that returns the source index of the packet. */
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short getSrc() const { return src; }
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/** Accessor function that returns the destination index of
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the packet. */
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short getDest() const { return dest; }
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};
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typedef PacketPtr *Packet;
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#endif //__MEM_PACKET_HH
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