dev: Move network devices to src/dev/net/

--HG--
rename : src/dev/Ethernet.py => src/dev/net/Ethernet.py
rename : src/dev/etherbus.cc => src/dev/net/etherbus.cc
rename : src/dev/etherbus.hh => src/dev/net/etherbus.hh
rename : src/dev/etherdevice.cc => src/dev/net/etherdevice.cc
rename : src/dev/etherdevice.hh => src/dev/net/etherdevice.hh
rename : src/dev/etherdump.cc => src/dev/net/etherdump.cc
rename : src/dev/etherdump.hh => src/dev/net/etherdump.hh
rename : src/dev/etherint.cc => src/dev/net/etherint.cc
rename : src/dev/etherint.hh => src/dev/net/etherint.hh
rename : src/dev/etherlink.cc => src/dev/net/etherlink.cc
rename : src/dev/etherlink.hh => src/dev/net/etherlink.hh
rename : src/dev/etherobject.hh => src/dev/net/etherobject.hh
rename : src/dev/etherpkt.cc => src/dev/net/etherpkt.cc
rename : src/dev/etherpkt.hh => src/dev/net/etherpkt.hh
rename : src/dev/ethertap.cc => src/dev/net/ethertap.cc
rename : src/dev/ethertap.hh => src/dev/net/ethertap.hh
rename : src/dev/i8254xGBe.cc => src/dev/net/i8254xGBe.cc
rename : src/dev/i8254xGBe.hh => src/dev/net/i8254xGBe.hh
rename : src/dev/i8254xGBe_defs.hh => src/dev/net/i8254xGBe_defs.hh
rename : src/dev/multi_etherlink.cc => src/dev/net/multi_etherlink.cc
rename : src/dev/multi_etherlink.hh => src/dev/net/multi_etherlink.hh
rename : src/dev/multi_iface.cc => src/dev/net/multi_iface.cc
rename : src/dev/multi_iface.hh => src/dev/net/multi_iface.hh
rename : src/dev/multi_packet.cc => src/dev/net/multi_packet.cc
rename : src/dev/multi_packet.hh => src/dev/net/multi_packet.hh
rename : src/dev/ns_gige.cc => src/dev/net/ns_gige.cc
rename : src/dev/ns_gige.hh => src/dev/net/ns_gige.hh
rename : src/dev/ns_gige_reg.h => src/dev/net/ns_gige_reg.h
rename : src/dev/pktfifo.cc => src/dev/net/pktfifo.cc
rename : src/dev/pktfifo.hh => src/dev/net/pktfifo.hh
rename : src/dev/sinic.cc => src/dev/net/sinic.cc
rename : src/dev/sinic.hh => src/dev/net/sinic.hh
rename : src/dev/sinicreg.hh => src/dev/net/sinicreg.hh
rename : src/dev/tcp_iface.cc => src/dev/net/tcp_iface.cc
rename : src/dev/tcp_iface.hh => src/dev/net/tcp_iface.hh

1 files changed, 0 insertions, 492 deletions

diff --git a/src/dev/multi_iface.hh b/src/dev/multi_iface.hh
deleted file mode 100644
index 5c7834d51..000000000
--- a/src/dev/multi_iface.hh
+++ /dev/null
@@ -1,492 +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.
- *
- * 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: Gabor Dozsa
- */
-
-/* @file
- * The interface class for multi gem5 simulations.
- *
- * Multi gem5 is an extension to gem5 to enable parallel simulation of a
- * distributed system (e.g. simulation of a pool of machines
- * connected by Ethernet links). A multi gem5 run consists of seperate gem5
- * processes running in parallel. Each gem5 process executes
- * the simulation of a component of the simulated distributed system.
- * (An example component can be a multi-core board with an Ethernet NIC.)
- * The MultiIface class below provides services to transfer data and
- * control messages among the gem5 processes. The main such services are
- * as follows.
- *
- * 1. Send a data packet coming from a simulated Ethernet link. The packet
- * will be transferred to (all) the target(s) gem5 processes. The send
- * operation is always performed by the simulation thread, i.e. the gem5
- * thread that is processing the event queue associated with the simulated
- * Ethernet link.
- *
- * 2. Spawn a receiver thread to process messages coming in from the
- * from other gem5 processes. Each simulated Ethernet link has its own
- * associated receiver thread. The receiver thread saves the incoming packet
- * and schedule an appropriate receive event in the event queue.
- *
- * 3. Schedule a global barrier event periodically to keep the gem5
- * processes in sync.
- * Periodic barrier event to keep peer gem5 processes in sync. The basic idea
- * is that no gem5 process can go ahead further than the simulated link
- * transmission delay to ensure that a corresponding receive event can always
- * be scheduled for any message coming in from a peer gem5 process.
- *
- *
- *
- * This interface is an abstract class (sendRaw() and recvRaw()
- * methods are pure virtual). It can work with various low level
- * send/receive service implementations (e.g. TCP/IP, MPI,...). A TCP
- * stream socket version is implemented in dev/src/tcp_iface.[hh,cc].
- */
-#ifndef __DEV_MULTI_IFACE_HH__
-#define __DEV_MULTI_IFACE_HH__
-
-#include <array>
-#include <mutex>
-#include <queue>
-#include <thread>
-#include <utility>
-
-#include "dev/etherpkt.hh"
-#include "dev/multi_packet.hh"
-#include "sim/core.hh"
-#include "sim/drain.hh"
-#include "sim/global_event.hh"
-
-class EventManager;
-
-/**
- * The interface class to talk to peer gem5 processes.
- */
-class MultiIface : public Drainable
-{
-  public:
-    /*!
-     * The possible reasons a multi sync among gem5 peers is needed for.
-     */
-    enum
-    class SyncTrigger {
-        periodic, /*!< Regular periodic sync. This can be interrupted by a
-                   checkpoint sync request */
-        ckpt,     /*!< sync before taking a checkpoint */
-        atomic    /*!< sync that cannot be interrupted (e.g. sync at startup) */
-    };
-
-  private:
-    typedef MultiHeaderPkt::MsgType MsgType;
-
-    /** Sync State-Machine
-     \dot
-     digraph Sync {
-     node [shape=box, fontsize=10];
-     idle -> busy
-     [ label="new trigger\n by run()" fontsize=8 ];
-     busy -> busy
-     [ label="new message by progress():\n(msg == SyncAck &&\nwaitNum > 1) || \n(msg==CkptSyncReq &&\ntrigger == ckpt)" fontsize=8 ];
-     busy -> idle
-     [ label="new message by progress():\n(msg == SyncAck &&\nwaitNum == 1)" fontsize=8 ];
-     busy -> interrupted
-     [ label="new message by progress():\n(msg == CkptSyncReq &&\ntrigger == periodic)" fontsize=8 ];
-     idle -> asyncCkpt
-     [ label="new message by progress():\nmsg == CkptSyncReq" fontsize=8 ];
-     asyncCkpt -> asyncCkpt
-     [ label="new message by progress():\nmsg == CkptSyncReq" fontsize=8 ];
-     asyncCkpt -> busy
-     [ label="new trigger by run():\ntrigger == ckpt" fontsize=8 ];
-     asyncCkpt -> idle
-     [ label="new trigger by run():\n(trigger == periodic &&\nwaitNum == 0) " fontsize=8 ];
-     asyncCkpt -> interrupted
-     [ label="new trigger by run():\n(trigger == periodic &&\nwaitNum > 0) " fontsize=8 ];
-     interrupted -> interrupted
-     [ label="new message by progress():\n(msg == CkptSyncReq &&\nwaitNum > 1)" fontsize=8 ];
-     interrupted -> idle
-     [ label="new message by progress():\n(msg == CkptSyncReq &&\nwaitNum == 1)" fontsize=8 ];
-     }
-     \enddot
-     */
-    /** @class Sync
-     * This class implements global sync operations among gem5 peer processes.
-     *
-     * @note This class is used as a singleton object (shared by all MultiIface
-     * objects).
-     */
-    class Sync
-    {
-      private:
-        /*!
-         * Internal state of the sync singleton object.
-         */
-        enum class SyncState {
-            busy,        /*!< There is an on-going sync. */
-            interrupted, /*!< An on-going periodic sync was interrupted. */
-            asyncCkpt,   /*!< A checkpoint (sim_exit) is already scheduled */
-            idle         /*!< There is no active sync. */
-        };
-        /**
-         * The lock to protect access to the MultiSync object.
-         */
-        std::mutex lock;
-        /**
-         * Condition variable for the simulation thread to wait on
-         * until all receiver threads completes the current global
-         * synchronisation.
-         */
-        std::condition_variable cv;
-        /**
-         * Number of receiver threads that not yet completed the current global
-         * synchronisation.
-         */
-        unsigned waitNum;
-        /**
-         * The trigger for the most recent sync.
-         */
-        SyncTrigger trigger;
-        /**
-         * Map sync triggers to request messages.
-         */
-        std::array<MsgType, 3> triggerToMsg = {{
-                MsgType::cmdPeriodicSyncReq,
-                MsgType::cmdCkptSyncReq,
-                MsgType::cmdAtomicSyncReq
-            }};
-
-        /**
-         * Current sync state.
-         */
-        SyncState state;
-
-      public:
-        /**
-         *  Core method to perform a full multi sync.
-         *
-         * @param t Sync trigger.
-         * @param sync_tick The tick the sync was expected to happen at.
-         * @return true if the sync completed, false if it was interrupted.
-         *
-         * @note In case of an interrupted periodic sync, sync_tick can be less
-         * than curTick() when we resume (i.e. re-run) it
-         */
-        bool run(SyncTrigger t, Tick sync_tick);
-        /**
-         * Callback when the receiver thread gets a sync message.
-         */
-        void progress(MsgType m);
-
-        Sync() : waitNum(0), state(SyncState::idle) {}
-        ~Sync() {}
-    };
-
-
-    /**
-     * The global event to schedule peridic multi sync. It is used as a
-     * singleton object.
-     *
-     * The periodic synchronisation works as follows.
-     * 1. A MultisyncEvent is scheduled as a global event when startup() is
-     * called.
-     * 2. The progress() method of the MultisyncEvent initiates a new barrier
-     * for each simulated Ethernet links.
-     * 3. Simulation thread(s) then waits until all receiver threads
-     * completes the ongoing barrier. The global sync event is done.
-     */
-    class SyncEvent : public GlobalSyncEvent
-    {
-      public:
-        /**
-         * Flag to indicate that the most recent periodic sync was interrupted
-         * (by a checkpoint request).
-         */
-        bool interrupted;
-        /**
-         * The tick when the most recent periodic synchronisation was scheduled
-         * at.
-         */
-        Tick scheduledAt;
-        /**
-         * Flag to indicate an on-going drain cycle.
-         */
-         bool isDraining;
-
-      public:
-        /**
-         * Only the firstly instanstiated MultiIface object will
-         * call this constructor.
-         */
-        SyncEvent() : GlobalSyncEvent(Default_Pri, 0), interrupted(false),
-                      scheduledAt(0), isDraining(false) {}
-
-        ~SyncEvent() { assert (scheduled() == false); }
-        /**
-         * Schedule the first periodic sync event.
-         *
-         * @param start Start tick for multi synchronisation
-         * @param repeat Frequency of multi synchronisation
-         *
-         */
-        void start(Tick start, Tick repeat);
-        /**
-         * Reschedule (if necessary) the periodic sync event.
-         *
-         * @param start Start tick for multi synchronisation
-         * @param repeat Frequency of multi synchronisation
-         *
-         * @note Useful if we have multiple MultiIface objects with
-         * different 'start' and 'repeat' values for global sync.
-         */
-        void adjust(Tick start, Tick repeat);
-        /**
-         * This is a global event so process() will be called by each
-         * simulation threads. (See further comments in the .cc file.)
-         */
-        void process() override;
-        /**
-         * Schedule periodic sync when resuming from a checkpoint.
-         */
-        void resume();
-
-        void serialize(const std::string &base, CheckpointOut &cp) const;
-        void unserialize(const std::string &base, CheckpointIn &cp);
-    };
-
-    /**
-     * The receive thread needs to store the packet pointer and the computed
-     * receive tick for each incoming data packet. This information is used
-     * by the simulation thread when it processes the corresponding receive
-     * event. (See more comments at the implemetation of the recvThreadFunc()
-     * and RecvPacketIn() methods.)
-     */
-    typedef std::pair<EthPacketPtr, Tick> RecvInfo;
-
-    /**
-     * Comparison predicate for RecvInfo, needed by the recvQueue.
-     */
-    struct RecvInfoCompare {
-        bool operator()(const RecvInfo &lhs, const RecvInfo &rhs)
-        {
-            return lhs.second > rhs.second;
-        }
-    };
-
-    /**
-     * Customized priority queue used to store incoming data packets info by
-     * the receiver thread. We need to expose the underlying container to
-     * enable iterator access for serializing.
-     */
-    class RecvQueue : public std::priority_queue<RecvInfo,
-                                                 std::vector<RecvInfo>,
-                                                 RecvInfoCompare>
-    {
-      public:
-        std::vector<RecvInfo> &impl() { return c; }
-        const std::vector<RecvInfo> &impl() const { return c; }
-    };
-
-    /*
-     * The priority queue to store RecvInfo items ordered by receive ticks.
-     */
-    RecvQueue recvQueue;
-    /**
-     * The singleton Sync object to perform multi synchronisation.
-     */
-    static Sync *sync;
-    /**
-     * The singleton SyncEvent object to schedule periodic multi sync.
-     */
-    static SyncEvent *syncEvent;
-    /**
-     * Tick to schedule the first multi sync event.
-     * This is just as optimization : we do not need any multi sync
-     * event until the simulated NIC is brought up by the OS.
-     */
-    Tick syncStart;
-    /**
-     * Frequency of multi sync events in ticks.
-     */
-    Tick syncRepeat;
-    /**
-     * Receiver thread pointer.
-     * Each MultiIface object must have exactly one receiver thread.
-     */
-    std::thread *recvThread;
-    /**
-     * The event manager associated with the MultiIface object.
-     */
-    EventManager *eventManager;
-
-    /**
-     * The receive done event for the simulated Ethernet link.
-     * It is scheduled by the receiver thread for each incoming data
-     * packet.
-     */
-    Event *recvDone;
-
-    /**
-     * The packet that belongs to the currently scheduled recvDone event.
-     */
-    EthPacketPtr scheduledRecvPacket;
-
-    /**
-     * The link delay in ticks for the simulated Ethernet link.
-     */
-    Tick linkDelay;
-
-    /**
-     * The rank of this process among the gem5 peers.
-     */
-    unsigned rank;
-    /**
-     * Total number of receiver threads (in this gem5 process).
-     * During the simulation it should be constant and equal to the
-     * number of MultiIface objects (i.e. simulated Ethernet
-     * links).
-     */
-    static unsigned recvThreadsNum;
-    /**
-     * The very first MultiIface object created becomes the master. We need
-     * a master to co-ordinate the global synchronisation.
-     */
-    static MultiIface *master;
-
-  protected:
-    /**
-     * Low level generic send routine.
-     * @param buf buffer that holds the data to send out
-     * @param length number of bytes to send
-     * @param dest_addr address of the target (simulated NIC). This may be
-     * used by a subclass for optimization (e.g. optimize broadcast)
-     */
-    virtual void sendRaw(void *buf,
-                         unsigned length,
-                         const MultiHeaderPkt::AddressType dest_addr) = 0;
-    /**
-     * Low level generic receive routine.
-     * @param buf the buffer to store the incoming message
-     * @param length buffer size (in bytes)
-     */
-    virtual bool recvRaw(void *buf, unsigned length) = 0;
-    /**
-     * Low level request for synchronisation among gem5 processes. Only one
-     * MultiIface object needs to call this (in each gem5 process) to trigger
-     * a multi sync.
-     *
-     * @param sync_req Sync request command.
-     * @param sync_tick The tick when sync is expected to happen in the sender.
-     */
-    virtual void syncRaw(MsgType sync_req, Tick sync_tick) = 0;
-    /**
-     * The function executed by a receiver thread.
-     */
-    void recvThreadFunc();
-    /**
-     * Receive a multi header packet. Called by the receiver thread.
-     * @param header the structure to store the incoming header packet.
-     * @return false if any error occured during the receive, true otherwise
-     *
-     * A header packet can carry a control command (e.g. 'barrier leave') or
-     * information about a data packet that is following the header packet
-     * back to back.
-     */
-    bool recvHeader(MultiHeaderPkt::Header &header);
-    /**
-     * Receive a data packet. Called by the receiver thread.
-     * @param data_header The packet descriptor for the expected incoming data
-     * packet.
-     */
-    void recvData(const MultiHeaderPkt::Header &data_header);
-
-  public:
-
-    /**
-     * ctor
-     * @param multi_rank Rank of this gem5 process within the multi run
-     * @param sync_start Start tick for multi synchronisation
-     * @param sync_repeat Frequency for multi synchronisation
-     * @param em The event manager associated with the simulated Ethernet link
-     */
-    MultiIface(unsigned multi_rank,
-               Tick sync_start,
-               Tick sync_repeat,
-               EventManager *em);
-
-    virtual ~MultiIface();
-    /**
-     * Send out an Ethernet packet.
-     * @param pkt The Ethernet packet to send.
-     * @param send_delay The delay in ticks for the send completion event.
-     */
-    void packetOut(EthPacketPtr pkt, Tick send_delay);
-    /**
-     * Fetch the next packet from the receive queue.
-     */
-    EthPacketPtr packetIn();
-
-    /**
-     * spawn the receiver thread.
-     * @param recv_done The receive done event associated with the simulated
-     * Ethernet link.
-     * @param link_delay The link delay for the simulated Ethernet link.
-     */
-    void spawnRecvThread(Event *recv_done,
-                         Tick link_delay);
-    /**
-     * Initialize the random number generator with a different seed in each
-     * peer gem5 process.
-     */
-    void initRandom();
-
-    DrainState drain() override;
-
-    /**
-     * Callback when draining is complete.
-     */
-    void drainDone();
-
-    /**
-     * Initialize the periodic synchronisation among peer gem5 processes.
-     */
-    void startPeriodicSync();
-
-    void serialize(const std::string &base, CheckpointOut &cp) const;
-    void unserialize(const std::string &base, CheckpointIn &cp);
-
-};
-
-
-#endif