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gem5/dev/ns_gige.hh
Nathan Binkert b031888038 Use parameter structs for initialization so it's easier 
to add new devices.  Abstract the Platform more so that
it is unnecessary to know know platform specifics for
interrupting or translating PCI DMA addresses.

dev/ide_ctrl.cc:
    convert to parameter struct for initialization
    use the interrupt functions in the PciDev base class
    convert from tsunami to using platform
    We don't need an interrupt controller here.
dev/ide_ctrl.hh:
    don't use Tsunami, use Platform
    make the IdeDisk a friend so that it can access my plaform
    convert to parameter struct for construction
dev/ide_disk.cc:
    don't use tsunami references, but platform references
dev/ns_gige.cc:
    Convert to parameter struct for initialzation. Use code in
    base class for interrupts so we don't need to know anything
    about the platform. Don't need an IntrControl *.
dev/ns_gige.hh:
    We don't need a Tsunami * anymore
    convert to a parameter struct for construction
dev/pcidev.cc:
    deal with new parameter struct
dev/pcidev.hh:
    - Move all of the configuration parameters into a param struct
    that we can pass into the constructor.
    - Add a Platform * for accessing new generic interrupt post/clear
    and dma address translation fuctions
    - Create functions for posting/clearing interrupts and translating
    dma addresses
dev/platform.cc:
    have default functions that panic on pci calls
dev/platform.hh:
    don't make the pci stuff pure virtual, but rather provide
    default implementations that panic.  Also, add dma address
    translation.
dev/tsunami.cc:
    this-> isn't necessary here.
    add pci address translation
dev/tsunami.hh:
    implement the pciToDma address translation

--HG--
extra : convert_revision : 7db27a2fa1f1bd84704921ec7ca0280b5653c43e
2004-11-13 15:45:22 -05:00

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/*
* Copyright (c) 2004 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.
*/
/* @file
* Device module for modelling the National Semiconductor
* DP83820 ethernet controller
*/
#ifndef __DEV_NS_GIGE_HH__
#define __DEV_NS_GIGE_HH__
#include "base/inet.hh"
#include "base/statistics.hh"
#include "dev/etherint.hh"
#include "dev/etherpkt.hh"
#include "dev/io_device.hh"
#include "dev/ns_gige_reg.h"
#include "dev/pcidev.hh"
#include "mem/bus/bus.hh"
#include "sim/eventq.hh"
/**
* Ethernet device registers
*/
struct dp_regs {
uint32_t command;
uint32_t config;
uint32_t mear;
uint32_t ptscr;
uint32_t isr;
uint32_t imr;
uint32_t ier;
uint32_t ihr;
uint32_t txdp;
uint32_t txdp_hi;
uint32_t txcfg;
uint32_t gpior;
uint32_t rxdp;
uint32_t rxdp_hi;
uint32_t rxcfg;
uint32_t pqcr;
uint32_t wcsr;
uint32_t pcr;
uint32_t rfcr;
uint32_t rfdr;
uint32_t srr;
uint32_t mibc;
uint32_t vrcr;
uint32_t vtcr;
uint32_t vdr;
uint32_t ccsr;
uint32_t tbicr;
uint32_t tbisr;
uint32_t tanar;
uint32_t tanlpar;
uint32_t taner;
uint32_t tesr;
};
struct dp_rom {
/**
* for perfect match memory.
* the linux driver doesn't use any other ROM
*/
uint8_t perfectMatch[ETH_ADDR_LEN];
};
class IntrControl;
class NSGigEInt;
class PhysicalMemory;
class BaseInterface;
class HierParams;
class Bus;
class PciConfigAll;
/**
* NS DP82830 Ethernet device model
*/
class NSGigE : public PciDev
{
public:
/** Transmit State Machine states */
enum TxState
{
txIdle,
txDescRefr,
txDescRead,
txFifoBlock,
txFragRead,
txDescWrite,
txAdvance
};
/** Receive State Machine States */
enum RxState
{
rxIdle,
rxDescRefr,
rxDescRead,
rxFifoBlock,
rxFragWrite,
rxDescWrite,
rxAdvance
};
enum DmaState
{
dmaIdle,
dmaReading,
dmaWriting,
dmaReadWaiting,
dmaWriteWaiting
};
private:
Addr addr;
static const Addr size = sizeof(dp_regs);
protected:
typedef std::deque<PacketPtr> pktbuf_t;
typedef pktbuf_t::iterator pktiter_t;
/** device register file */
dp_regs regs;
dp_rom rom;
/** pci settings */
bool ioEnable;
#if 0
bool memEnable;
bool bmEnable;
#endif
/*** BASIC STRUCTURES FOR TX/RX ***/
/* Data FIFOs */
pktbuf_t txFifo;
uint32_t maxTxFifoSize;
pktbuf_t rxFifo;
uint32_t maxRxFifoSize;
/** various helper vars */
PacketPtr txPacket;
PacketPtr rxPacket;
uint8_t *txPacketBufPtr;
uint8_t *rxPacketBufPtr;
uint32_t txXferLen;
uint32_t rxXferLen;
bool rxDmaFree;
bool txDmaFree;
/** DescCaches */
ns_desc txDescCache;
ns_desc rxDescCache;
/* tx State Machine */
TxState txState;
bool txEnable;
/** Current Transmit Descriptor Done */
bool CTDD;
/** current amt of free space in txDataFifo in bytes */
uint32_t txFifoAvail;
/** halt the tx state machine after next packet */
bool txHalt;
/** ptr to the next byte in the current fragment */
Addr txFragPtr;
/** count of bytes remaining in the current descriptor */
uint32_t txDescCnt;
DmaState txDmaState;
/** rx State Machine */
RxState rxState;
bool rxEnable;
/** Current Receive Descriptor Done */
bool CRDD;
/** num of bytes in the current packet being drained from rxDataFifo */
uint32_t rxPktBytes;
/** number of bytes in the rxFifo */
uint32_t rxFifoCnt;
/** halt the rx state machine after current packet */
bool rxHalt;
/** ptr to the next byte in current fragment */
Addr rxFragPtr;
/** count of bytes remaining in the current descriptor */
uint32_t rxDescCnt;
DmaState rxDmaState;
bool extstsEnable;
protected:
Tick dmaReadDelay;
Tick dmaWriteDelay;
Tick dmaReadFactor;
Tick dmaWriteFactor;
void *rxDmaData;
Addr rxDmaAddr;
int rxDmaLen;
bool doRxDmaRead();
bool doRxDmaWrite();
void rxDmaReadCopy();
void rxDmaWriteCopy();
void *txDmaData;
Addr txDmaAddr;
int txDmaLen;
bool doTxDmaRead();
bool doTxDmaWrite();
void txDmaReadCopy();
void txDmaWriteCopy();
void rxDmaReadDone();
friend class EventWrapper<NSGigE, &NSGigE::rxDmaReadDone>;
EventWrapper<NSGigE, &NSGigE::rxDmaReadDone> rxDmaReadEvent;
void rxDmaWriteDone();
friend class EventWrapper<NSGigE, &NSGigE::rxDmaWriteDone>;
EventWrapper<NSGigE, &NSGigE::rxDmaWriteDone> rxDmaWriteEvent;
void txDmaReadDone();
friend class EventWrapper<NSGigE, &NSGigE::txDmaReadDone>;
EventWrapper<NSGigE, &NSGigE::txDmaReadDone> txDmaReadEvent;
void txDmaWriteDone();
friend class EventWrapper<NSGigE, &NSGigE::txDmaWriteDone>;
EventWrapper<NSGigE, &NSGigE::txDmaWriteDone> txDmaWriteEvent;
bool dmaDescFree;
bool dmaDataFree;
protected:
Tick txDelay;
Tick rxDelay;
void txReset();
void rxReset();
void regsReset();
void rxKick();
Tick rxKickTick;
typedef EventWrapper<NSGigE, &NSGigE::rxKick> RxKickEvent;
friend class RxKickEvent;
void txKick();
Tick txKickTick;
typedef EventWrapper<NSGigE, &NSGigE::txKick> TxKickEvent;
friend class TxKickEvent;
/**
* Retransmit event
*/
void transmit();
void txEventTransmit()
{
transmit();
if (txState == txFifoBlock)
txKick();
}
typedef EventWrapper<NSGigE, &NSGigE::txEventTransmit> TxEvent;
friend class TxEvent;
TxEvent txEvent;
void txDump() const;
void rxDump() const;
/**
* receive address filter
*/
bool rxFilterEnable;
bool rxFilter(PacketPtr &packet);
bool acceptBroadcast;
bool acceptMulticast;
bool acceptUnicast;
bool acceptPerfect;
bool acceptArp;
PhysicalMemory *physmem;
/**
* Interrupt management
*/
IntrControl *intctrl;
void devIntrPost(uint32_t interrupts);
void devIntrClear(uint32_t interrupts);
void devIntrChangeMask();
Tick intrDelay;
Tick intrTick;
bool cpuPendingIntr;
void cpuIntrPost(Tick when);
void cpuInterrupt();
void cpuIntrClear();
typedef EventWrapper<NSGigE, &NSGigE::cpuInterrupt> IntrEvent;
friend class IntrEvent;
IntrEvent *intrEvent;
NSGigEInt *interface;
public:
struct Params : public PciDev::Params
{
PhysicalMemory *pmem;
HierParams *hier;
Bus *header_bus;
Bus *payload_bus;
Tick intr_delay;
Tick tx_delay;
Tick rx_delay;
Tick pio_latency;
bool dma_desc_free;
bool dma_data_free;
Tick dma_read_delay;
Tick dma_write_delay;
Tick dma_read_factor;
Tick dma_write_factor;
bool rx_filter;
Net::EthAddr eaddr;
uint32_t tx_fifo_size;
uint32_t rx_fifo_size;
};
NSGigE(Params *params);
~NSGigE();
const Params *params() const { return (const Params *)_params; }
virtual void WriteConfig(int offset, int size, uint32_t data);
virtual void ReadConfig(int offset, int size, uint8_t *data);
virtual Fault read(MemReqPtr &req, uint8_t *data);
virtual Fault write(MemReqPtr &req, const uint8_t *data);
bool cpuIntrPending() const;
void cpuIntrAck() { cpuIntrClear(); }
bool recvPacket(PacketPtr &packet);
void transferDone();
void setInterface(NSGigEInt *i) { assert(!interface); interface = i; }
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string &section);
public:
void regStats();
private:
Stats::Scalar<> txBytes;
Stats::Scalar<> rxBytes;
Stats::Scalar<> txPackets;
Stats::Scalar<> rxPackets;
Stats::Scalar<> txIpChecksums;
Stats::Scalar<> rxIpChecksums;
Stats::Scalar<> txTcpChecksums;
Stats::Scalar<> rxTcpChecksums;
Stats::Scalar<> txUdpChecksums;
Stats::Scalar<> rxUdpChecksums;
Stats::Scalar<> descDmaReads;
Stats::Scalar<> descDmaWrites;
Stats::Scalar<> descDmaRdBytes;
Stats::Scalar<> descDmaWrBytes;
Stats::Formula txBandwidth;
Stats::Formula rxBandwidth;
Stats::Formula txPacketRate;
Stats::Formula rxPacketRate;
public:
Tick cacheAccess(MemReqPtr &req);
};
/*
* Ethernet Interface for an Ethernet Device
*/
class NSGigEInt : public EtherInt
{
private:
NSGigE *dev;
public:
NSGigEInt(const std::string &name, NSGigE *d)
: EtherInt(name), dev(d) { dev->setInterface(this); }
virtual bool recvPacket(PacketPtr &pkt) { return dev->recvPacket(pkt); }
virtual void sendDone() { dev->transferDone(); }
};
#endif // __DEV_NS_GIGE_HH__
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