340 lines
8.1 KiB
C++
340 lines
8.1 KiB
C++
/*
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* Copyright (c) 2004 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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#ifndef __DEV_SINIC_HH__
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#define __DEV_SINIC_HH__
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#include "base/inet.hh"
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#include "base/statistics.hh"
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#include "dev/etherint.hh"
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#include "dev/etherpkt.hh"
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#include "dev/io_device.hh"
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#include "dev/pcidev.hh"
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#include "dev/pktfifo.hh"
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#include "dev/sinicreg.hh"
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#include "mem/bus/bus.hh"
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#include "sim/eventq.hh"
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namespace Sinic {
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class Interface;
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class Base : public PciDev
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{
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protected:
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bool rxEnable;
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bool txEnable;
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protected:
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Tick intrDelay;
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Tick intrTick;
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bool cpuIntrEnable;
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bool cpuPendingIntr;
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void cpuIntrPost(Tick when);
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void cpuInterrupt();
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void cpuIntrClear();
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typedef EventWrapper<Base, &Base::cpuInterrupt> IntrEvent;
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friend class IntrEvent;
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IntrEvent *intrEvent;
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Interface *interface;
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bool cpuIntrPending() const;
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void cpuIntrAck() { cpuIntrClear(); }
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/**
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* Serialization stuff
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*/
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public:
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virtual void serialize(std::ostream &os);
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virtual void unserialize(Checkpoint *cp, const std::string §ion);
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/**
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* Construction/Destruction/Parameters
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*/
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public:
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struct Params : public PciDev::Params
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{
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Tick intr_delay;
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};
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Base(Params *p);
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};
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class Device : public Base
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{
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protected:
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Platform *plat;
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PhysicalMemory *physmem;
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protected:
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/** Receive State Machine States */
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enum RxState {
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rxIdle,
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rxFifoBlock,
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rxBeginCopy,
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rxCopy,
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rxCopyDone
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};
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/** Transmit State Machine states */
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enum TxState {
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txIdle,
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txFifoBlock,
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txBeginCopy,
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txCopy,
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txCopyDone
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};
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/** device register file */
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struct {
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uint32_t Config;
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uint32_t RxMaxCopy;
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uint32_t TxMaxCopy;
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uint32_t RxThreshold;
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uint32_t TxThreshold;
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uint32_t IntrStatus;
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uint32_t IntrMask;
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uint64_t RxData;
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uint64_t RxDone;
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uint64_t TxData;
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uint64_t TxDone;
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} regs;
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private:
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Addr addr;
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static const Addr size = Regs::Size;
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protected:
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RxState rxState;
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PacketFifo rxFifo;
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PacketPtr rxPacket;
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uint8_t *rxPacketBufPtr;
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int rxPktBytes;
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uint64_t rxDoneData;
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Addr rxDmaAddr;
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uint8_t *rxDmaData;
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int rxDmaLen;
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TxState txState;
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PacketFifo txFifo;
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PacketPtr txPacket;
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uint8_t *txPacketBufPtr;
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int txPktBytes;
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Addr txDmaAddr;
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uint8_t *txDmaData;
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int txDmaLen;
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protected:
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void reset();
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void rxKick();
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Tick rxKickTick;
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typedef EventWrapper<Device, &Device::rxKick> RxKickEvent;
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friend class RxKickEvent;
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void txKick();
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Tick txKickTick;
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typedef EventWrapper<Device, &Device::txKick> TxKickEvent;
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friend class TxKickEvent;
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/**
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* Retransmit event
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*/
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void transmit();
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void txEventTransmit()
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{
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transmit();
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if (txState == txFifoBlock)
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txKick();
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}
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typedef EventWrapper<Device, &Device::txEventTransmit> TxEvent;
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friend class TxEvent;
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TxEvent txEvent;
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void txDump() const;
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void rxDump() const;
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/**
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* receive address filter
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*/
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bool rxFilter(const PacketPtr &packet);
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/**
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* device configuration
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*/
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void changeConfig(uint32_t newconfig);
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/**
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* device ethernet interface
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*/
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public:
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bool recvPacket(PacketPtr packet);
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void transferDone();
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void setInterface(Interface *i) { assert(!interface); interface = i; }
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/**
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* DMA parameters
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*/
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protected:
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void rxDmaCopy();
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void rxDmaDone();
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friend class EventWrapper<Device, &Device::rxDmaDone>;
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EventWrapper<Device, &Device::rxDmaDone> rxDmaEvent;
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void txDmaCopy();
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void txDmaDone();
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friend class EventWrapper<Device, &Device::txDmaDone>;
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EventWrapper<Device, &Device::rxDmaDone> txDmaEvent;
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Tick dmaReadDelay;
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Tick dmaReadFactor;
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Tick dmaWriteDelay;
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Tick dmaWriteFactor;
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/**
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* PIO parameters
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*/
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protected:
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MemReqPtr rxPioRequest;
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MemReqPtr txPioRequest;
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/**
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* Interrupt management
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*/
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protected:
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void devIntrPost(uint32_t interrupts);
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void devIntrClear(uint32_t interrupts = Regs::Intr_All);
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void devIntrChangeMask(uint32_t newmask);
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/**
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* PCI Configuration interface
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*/
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public:
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virtual void WriteConfig(int offset, int size, uint32_t data);
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/**
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* Memory Interface
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*/
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public:
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virtual Fault read(MemReqPtr &req, uint8_t *data);
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virtual Fault write(MemReqPtr &req, const uint8_t *data);
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Tick cacheAccess(MemReqPtr &req);
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/**
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* Statistics
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*/
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private:
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Stats::Scalar<> rxBytes;
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Stats::Formula rxBandwidth;
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Stats::Scalar<> rxPackets;
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Stats::Formula rxPacketRate;
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Stats::Scalar<> rxIpPackets;
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Stats::Scalar<> rxTcpPackets;
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Stats::Scalar<> rxUdpPackets;
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Stats::Scalar<> rxIpChecksums;
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Stats::Scalar<> rxTcpChecksums;
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Stats::Scalar<> rxUdpChecksums;
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Stats::Scalar<> txBytes;
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Stats::Formula txBandwidth;
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Stats::Scalar<> txPackets;
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Stats::Formula txPacketRate;
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Stats::Scalar<> txIpPackets;
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Stats::Scalar<> txTcpPackets;
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Stats::Scalar<> txUdpPackets;
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Stats::Scalar<> txIpChecksums;
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Stats::Scalar<> txTcpChecksums;
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Stats::Scalar<> txUdpChecksums;
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public:
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virtual void regStats();
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/**
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* Serialization stuff
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*/
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public:
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virtual void serialize(std::ostream &os);
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virtual void unserialize(Checkpoint *cp, const std::string §ion);
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/**
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* Construction/Destruction/Parameters
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*/
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public:
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struct Params : public Base::Params
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{
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IntrControl *i;
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PhysicalMemory *pmem;
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Tick tx_delay;
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Tick rx_delay;
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HierParams *hier;
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Bus *header_bus;
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Bus *payload_bus;
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Tick pio_latency;
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PhysicalMemory *physmem;
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IntrControl *intctrl;
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bool rx_filter;
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Net::EthAddr eaddr;
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uint32_t rx_max_copy;
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uint32_t tx_max_copy;
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uint32_t rx_fifo_size;
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uint32_t tx_fifo_size;
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uint32_t rx_fifo_threshold;
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uint32_t tx_fifo_threshold;
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Tick dma_read_delay;
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Tick dma_read_factor;
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Tick dma_write_delay;
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Tick dma_write_factor;
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};
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protected:
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const Params *params() const { return (const Params *)_params; }
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public:
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Device(Params *params);
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~Device();
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};
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/*
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* Ethernet Interface for an Ethernet Device
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*/
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class Interface : public EtherInt
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{
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private:
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Device *dev;
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public:
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Interface(const std::string &name, Device *d)
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: EtherInt(name), dev(d) { dev->setInterface(this); }
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virtual bool recvPacket(PacketPtr pkt) { return dev->recvPacket(pkt); }
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virtual void sendDone() { dev->transferDone(); }
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};
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/* namespace Sinic */ }
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#endif // __DEV_SINIC_HH__
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