diff options
author | Andreas Sandberg <andreas.sandberg@arm.com> | 2015-12-10 10:35:18 +0000 |
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committer | Andreas Sandberg <andreas.sandberg@arm.com> | 2015-12-10 10:35:18 +0000 |
commit | 23c961a0fd97251ee7c760bc2ff2a011a417ad9b (patch) | |
tree | 0481b7552303373cd3722156b1cef92d813de215 /src/dev/etherlink.cc | |
parent | ef097ac4381ad2f14acda640ae198f04d9f7988d (diff) | |
download | gem5-23c961a0fd97251ee7c760bc2ff2a011a417ad9b.tar.xz |
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
Diffstat (limited to 'src/dev/etherlink.cc')
-rw-r--r-- | src/dev/etherlink.cc | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/src/dev/etherlink.cc b/src/dev/etherlink.cc deleted file mode 100644 index 1c88a31dd..000000000 --- a/src/dev/etherlink.cc +++ /dev/null @@ -1,279 +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 - * Ron Dreslinski - */ - -/* @file - * Device module for modelling a fixed bandwidth full duplex ethernet link - */ - -#include <cmath> -#include <deque> -#include <string> -#include <vector> - -#include "base/random.hh" -#include "base/trace.hh" -#include "debug/Ethernet.hh" -#include "debug/EthernetData.hh" -#include "dev/etherdump.hh" -#include "dev/etherint.hh" -#include "dev/etherlink.hh" -#include "dev/etherpkt.hh" -#include "params/EtherLink.hh" -#include "sim/core.hh" -#include "sim/serialize.hh" -#include "sim/system.hh" - -using namespace std; - -EtherLink::EtherLink(const Params *p) - : EtherObject(p) -{ - link[0] = new Link(name() + ".link0", this, 0, p->speed, - p->delay, p->delay_var, p->dump); - link[1] = new Link(name() + ".link1", this, 1, p->speed, - p->delay, p->delay_var, p->dump); - - interface[0] = new Interface(name() + ".int0", link[0], link[1]); - interface[1] = new Interface(name() + ".int1", link[1], link[0]); -} - - -EtherLink::~EtherLink() -{ - delete link[0]; - delete link[1]; - - delete interface[0]; - delete interface[1]; -} - -EtherInt* -EtherLink::getEthPort(const std::string &if_name, int idx) -{ - Interface *i; - if (if_name == "int0") - i = interface[0]; - else if (if_name == "int1") - i = interface[1]; - else - return NULL; - if (i->getPeer()) - panic("interface already connected to\n"); - - return i; -} - - -EtherLink::Interface::Interface(const string &name, Link *tx, Link *rx) - : EtherInt(name), txlink(tx) -{ - tx->setTxInt(this); - rx->setRxInt(this); -} - -EtherLink::Link::Link(const string &name, EtherLink *p, int num, - double rate, Tick delay, Tick delay_var, EtherDump *d) - : objName(name), parent(p), number(num), txint(NULL), rxint(NULL), - ticksPerByte(rate), linkDelay(delay), delayVar(delay_var), dump(d), - doneEvent(this), txQueueEvent(this) -{ } - -void -EtherLink::serialize(CheckpointOut &cp) const -{ - link[0]->serialize("link0", cp); - link[1]->serialize("link1", cp); -} - -void -EtherLink::unserialize(CheckpointIn &cp) -{ - link[0]->unserialize("link0", cp); - link[1]->unserialize("link1", cp); -} - -void -EtherLink::Link::txComplete(EthPacketPtr packet) -{ - DPRINTF(Ethernet, "packet received: len=%d\n", packet->length); - DDUMP(EthernetData, packet->data, packet->length); - rxint->sendPacket(packet); -} - -void -EtherLink::Link::txDone() -{ - if (dump) - dump->dump(packet); - - if (linkDelay > 0) { - DPRINTF(Ethernet, "packet delayed: delay=%d\n", linkDelay); - txQueue.emplace_back(std::make_pair(curTick() + linkDelay, packet)); - if (!txQueueEvent.scheduled()) - parent->schedule(txQueueEvent, txQueue.front().first); - } else { - assert(txQueue.empty()); - txComplete(packet); - } - - packet = 0; - assert(!busy()); - - txint->sendDone(); -} - -void -EtherLink::Link::processTxQueue() -{ - auto cur(txQueue.front()); - txQueue.pop_front(); - - // Schedule a new event to process the next packet in the queue. - if (!txQueue.empty()) { - auto next(txQueue.front()); - assert(next.first > curTick()); - parent->schedule(txQueueEvent, next.first); - } - - assert(cur.first == curTick()); - txComplete(cur.second); -} - -bool -EtherLink::Link::transmit(EthPacketPtr pkt) -{ - if (busy()) { - DPRINTF(Ethernet, "packet not sent, link busy\n"); - return false; - } - - DPRINTF(Ethernet, "packet sent: len=%d\n", pkt->length); - DDUMP(EthernetData, pkt->data, pkt->length); - - packet = pkt; - Tick delay = (Tick)ceil(((double)pkt->length * ticksPerByte) + 1.0); - if (delayVar != 0) - delay += random_mt.random<Tick>(0, delayVar); - - DPRINTF(Ethernet, "scheduling packet: delay=%d, (rate=%f)\n", - delay, ticksPerByte); - parent->schedule(doneEvent, curTick() + delay); - - return true; -} - -void -EtherLink::Link::serialize(const string &base, CheckpointOut &cp) const -{ - bool packet_exists = packet != nullptr; - paramOut(cp, base + ".packet_exists", packet_exists); - if (packet_exists) - packet->serialize(base + ".packet", cp); - - bool event_scheduled = doneEvent.scheduled(); - paramOut(cp, base + ".event_scheduled", event_scheduled); - if (event_scheduled) { - Tick event_time = doneEvent.when(); - paramOut(cp, base + ".event_time", event_time); - } - - const size_t tx_queue_size(txQueue.size()); - paramOut(cp, base + ".tx_queue_size", tx_queue_size); - unsigned idx(0); - for (const auto &pe : txQueue) { - paramOut(cp, csprintf("%s.txQueue[%i].tick", base, idx), pe.first); - pe.second->serialize(csprintf("%s.txQueue[%i].packet", base, idx), cp); - - ++idx; - } -} - -void -EtherLink::Link::unserialize(const string &base, CheckpointIn &cp) -{ - bool packet_exists; - paramIn(cp, base + ".packet_exists", packet_exists); - if (packet_exists) { - packet = make_shared<EthPacketData>(16384); - packet->unserialize(base + ".packet", cp); - } - - bool event_scheduled; - paramIn(cp, base + ".event_scheduled", event_scheduled); - if (event_scheduled) { - Tick event_time; - paramIn(cp, base + ".event_time", event_time); - parent->schedule(doneEvent, event_time); - } - - size_t tx_queue_size; - if (optParamIn(cp, base + ".tx_queue_size", tx_queue_size)) { - for (size_t idx = 0; idx < tx_queue_size; ++idx) { - Tick tick; - EthPacketPtr delayed_packet = make_shared<EthPacketData>(16384); - - paramIn(cp, csprintf("%s.txQueue[%i].tick", base, idx), tick); - delayed_packet->unserialize( - csprintf("%s.txQueue[%i].packet", base, idx), cp); - - fatal_if(!txQueue.empty() && txQueue.back().first > tick, - "Invalid txQueue packet order in EtherLink!\n"); - txQueue.emplace_back(std::make_pair(tick, delayed_packet)); - } - - if (!txQueue.empty()) - parent->schedule(txQueueEvent, txQueue.front().first); - } else { - // We can't reliably convert in-flight packets from old - // checkpoints. In fact, gem5 hasn't been able to load these - // packets for at least two years before the format change. - warn("Old-style EtherLink serialization format detected, " - "in-flight packets may have been dropped.\n"); - } -} - -EtherLink * -EtherLinkParams::create() -{ - return new EtherLink(this); -} |