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Diffstat (limited to 'src/dev/etherlink.hh')
-rw-r--r-- | src/dev/etherlink.hh | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/src/dev/etherlink.hh b/src/dev/etherlink.hh deleted file mode 100644 index 9d2a5fdf2..000000000 --- a/src/dev/etherlink.hh +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Copyright (c) 2015 ARM Limited - * All rights reserved - * - * The license below extends only to copyright in the software and shall - * not be construed as granting a license to any other intellectual - * property including but not limited to intellectual property relating - * to a hardware implementation of the functionality of the software - * licensed hereunder. You may use the software subject to the license - * terms below provided that you ensure that this notice is replicated - * unmodified and in its entirety in all distributions of the software, - * modified or unmodified, in source code or in binary form. - * - * Copyright (c) 2002-2005 The Regents of The University of Michigan - * 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. - * - * Authors: Nathan Binkert - */ - -/* @file - * Device module for modelling a fixed bandwidth full duplex ethernet link - */ - -#ifndef __DEV_ETHERLINK_HH__ -#define __DEV_ETHERLINK_HH__ - -#include <queue> - -#include "base/types.hh" -#include "dev/etherint.hh" -#include "dev/etherobject.hh" -#include "dev/etherpkt.hh" -#include "params/EtherLink.hh" -#include "sim/eventq.hh" -#include "sim/sim_object.hh" - -class EtherDump; -class Checkpoint; -/* - * Model for a fixed bandwidth full duplex ethernet link - */ -class EtherLink : public EtherObject -{ - protected: - class Interface; - - /* - * Model for a single uni-directional link - */ - class Link - { - protected: - const std::string objName; - - EtherLink *const parent; - const int number; - - Interface *txint; - Interface *rxint; - - const double ticksPerByte; - const Tick linkDelay; - const Tick delayVar; - EtherDump *const dump; - - protected: - /* - * Transfer is complete - */ - EthPacketPtr packet; - void txDone(); - typedef EventWrapper<Link, &Link::txDone> DoneEvent; - friend void DoneEvent::process(); - DoneEvent doneEvent; - - /** - * Maintain a queue of in-flight packets. Assume that the - * delay is non-zero and constant (i.e., at most one packet - * per tick). - */ - std::deque<std::pair<Tick, EthPacketPtr>> txQueue; - - void processTxQueue(); - typedef EventWrapper<Link, &Link::processTxQueue> TxQueueEvent; - friend void TxQueueEvent::process(); - TxQueueEvent txQueueEvent; - - void txComplete(EthPacketPtr packet); - - public: - Link(const std::string &name, EtherLink *p, int num, - double rate, Tick delay, Tick delay_var, EtherDump *dump); - ~Link() {} - - const std::string name() const { return objName; } - - bool busy() const { return (bool)packet; } - bool transmit(EthPacketPtr packet); - - void setTxInt(Interface *i) { assert(!txint); txint = i; } - void setRxInt(Interface *i) { assert(!rxint); rxint = i; } - - void serialize(const std::string &base, CheckpointOut &cp) const; - void unserialize(const std::string &base, CheckpointIn &cp); - }; - - /* - * Interface at each end of the link - */ - class Interface : public EtherInt - { - private: - Link *txlink; - - public: - Interface(const std::string &name, Link *txlink, Link *rxlink); - bool recvPacket(EthPacketPtr packet) { return txlink->transmit(packet); } - void sendDone() { peer->sendDone(); } - bool isBusy() { return txlink->busy(); } - }; - - Link *link[2]; - Interface *interface[2]; - - public: - typedef EtherLinkParams Params; - EtherLink(const Params *p); - virtual ~EtherLink(); - - const Params * - params() const - { - return dynamic_cast<const Params *>(_params); - } - - EtherInt *getEthPort(const std::string &if_name, int idx) override; - - void serialize(CheckpointOut &cp) const override; - void unserialize(CheckpointIn &cp) override; - -}; - -#endif // __ETHERLINK_HH__ |