3106 lines
86 KiB
C++
3106 lines
86 KiB
C++
/*
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* Copyright (c) 2004-2005 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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/** @file
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* Device module for modelling the National Semiconductor
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* DP83820 ethernet controller. Does not support priority queueing
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*/
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#include <cstdio>
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#include <deque>
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#include <string>
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#include "arch/alpha/ev5.hh"
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#include "base/inet.hh"
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#include "cpu/exec_context.hh"
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#include "dev/etherlink.hh"
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#include "dev/ns_gige.hh"
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#include "dev/pciconfigall.hh"
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#include "mem/bus/bus.hh"
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#include "mem/bus/dma_interface.hh"
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#include "mem/bus/pio_interface.hh"
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#include "mem/bus/pio_interface_impl.hh"
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#include "mem/functional/memory_control.hh"
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#include "mem/functional/physical.hh"
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#include "sim/builder.hh"
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#include "sim/debug.hh"
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#include "sim/host.hh"
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#include "sim/stats.hh"
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#include "arch/vtophys.hh"
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const char *NsRxStateStrings[] =
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{
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"rxIdle",
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"rxDescRefr",
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"rxDescRead",
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"rxFifoBlock",
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"rxFragWrite",
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"rxDescWrite",
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"rxAdvance"
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};
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const char *NsTxStateStrings[] =
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{
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"txIdle",
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"txDescRefr",
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"txDescRead",
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"txFifoBlock",
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"txFragRead",
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"txDescWrite",
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"txAdvance"
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};
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const char *NsDmaState[] =
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{
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"dmaIdle",
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"dmaReading",
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"dmaWriting",
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"dmaReadWaiting",
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"dmaWriteWaiting"
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};
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using namespace std;
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using namespace Net;
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using namespace TheISA;
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///////////////////////////////////////////////////////////////////////
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//
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// NSGigE PCI Device
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//
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NSGigE::NSGigE(Params *p)
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: PciDev(p), ioEnable(false),
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txFifo(p->tx_fifo_size), rxFifo(p->rx_fifo_size),
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txPacket(0), rxPacket(0), txPacketBufPtr(NULL), rxPacketBufPtr(NULL),
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txXferLen(0), rxXferLen(0), clock(p->clock),
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txState(txIdle), txEnable(false), CTDD(false),
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txFragPtr(0), txDescCnt(0), txDmaState(dmaIdle), rxState(rxIdle),
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rxEnable(false), CRDD(false), rxPktBytes(0),
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rxFragPtr(0), rxDescCnt(0), rxDmaState(dmaIdle), extstsEnable(false),
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eepromState(eepromStart), rxDmaReadEvent(this), rxDmaWriteEvent(this),
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txDmaReadEvent(this), txDmaWriteEvent(this),
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dmaDescFree(p->dma_desc_free), dmaDataFree(p->dma_data_free),
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txDelay(p->tx_delay), rxDelay(p->rx_delay),
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rxKickTick(0), rxKickEvent(this), txKickTick(0), txKickEvent(this),
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txEvent(this), rxFilterEnable(p->rx_filter), acceptBroadcast(false),
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acceptMulticast(false), acceptUnicast(false),
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acceptPerfect(false), acceptArp(false), multicastHashEnable(false),
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physmem(p->pmem), intrTick(0), cpuPendingIntr(false),
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intrEvent(0), interface(0)
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{
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if (p->pio_bus) {
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pioInterface = newPioInterface(name() + ".pio", p->hier,
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p->pio_bus, this,
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&NSGigE::cacheAccess);
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pioLatency = p->pio_latency * p->pio_bus->clockRate;
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}
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if (p->header_bus) {
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if (p->payload_bus)
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dmaInterface = new DMAInterface<Bus>(name() + ".dma",
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p->header_bus,
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p->payload_bus, 1,
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p->dma_no_allocate);
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else
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dmaInterface = new DMAInterface<Bus>(name() + ".dma",
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p->header_bus,
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p->header_bus, 1,
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p->dma_no_allocate);
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} else if (p->payload_bus)
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panic("Must define a header bus if defining a payload bus");
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intrDelay = p->intr_delay;
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dmaReadDelay = p->dma_read_delay;
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dmaWriteDelay = p->dma_write_delay;
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dmaReadFactor = p->dma_read_factor;
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dmaWriteFactor = p->dma_write_factor;
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regsReset();
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memcpy(&rom.perfectMatch, p->eaddr.bytes(), ETH_ADDR_LEN);
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memset(&rxDesc32, 0, sizeof(rxDesc32));
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memset(&txDesc32, 0, sizeof(txDesc32));
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memset(&rxDesc64, 0, sizeof(rxDesc64));
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memset(&txDesc64, 0, sizeof(txDesc64));
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}
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NSGigE::~NSGigE()
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{}
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void
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NSGigE::regStats()
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{
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txBytes
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.name(name() + ".txBytes")
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.desc("Bytes Transmitted")
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.prereq(txBytes)
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;
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rxBytes
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.name(name() + ".rxBytes")
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.desc("Bytes Received")
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.prereq(rxBytes)
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;
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txPackets
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.name(name() + ".txPackets")
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.desc("Number of Packets Transmitted")
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.prereq(txBytes)
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;
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rxPackets
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.name(name() + ".rxPackets")
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.desc("Number of Packets Received")
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.prereq(rxBytes)
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;
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txIpChecksums
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.name(name() + ".txIpChecksums")
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.desc("Number of tx IP Checksums done by device")
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.precision(0)
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.prereq(txBytes)
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;
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rxIpChecksums
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.name(name() + ".rxIpChecksums")
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.desc("Number of rx IP Checksums done by device")
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.precision(0)
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.prereq(rxBytes)
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;
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txTcpChecksums
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.name(name() + ".txTcpChecksums")
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.desc("Number of tx TCP Checksums done by device")
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.precision(0)
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.prereq(txBytes)
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;
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rxTcpChecksums
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.name(name() + ".rxTcpChecksums")
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.desc("Number of rx TCP Checksums done by device")
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.precision(0)
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.prereq(rxBytes)
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;
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txUdpChecksums
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.name(name() + ".txUdpChecksums")
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.desc("Number of tx UDP Checksums done by device")
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.precision(0)
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.prereq(txBytes)
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;
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rxUdpChecksums
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.name(name() + ".rxUdpChecksums")
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.desc("Number of rx UDP Checksums done by device")
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.precision(0)
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.prereq(rxBytes)
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;
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descDmaReads
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.name(name() + ".descDMAReads")
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.desc("Number of descriptors the device read w/ DMA")
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.precision(0)
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;
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descDmaWrites
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.name(name() + ".descDMAWrites")
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.desc("Number of descriptors the device wrote w/ DMA")
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.precision(0)
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;
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descDmaRdBytes
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.name(name() + ".descDmaReadBytes")
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.desc("number of descriptor bytes read w/ DMA")
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.precision(0)
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;
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descDmaWrBytes
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.name(name() + ".descDmaWriteBytes")
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.desc("number of descriptor bytes write w/ DMA")
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.precision(0)
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;
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txBandwidth
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.name(name() + ".txBandwidth")
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.desc("Transmit Bandwidth (bits/s)")
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.precision(0)
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.prereq(txBytes)
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;
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rxBandwidth
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.name(name() + ".rxBandwidth")
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.desc("Receive Bandwidth (bits/s)")
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.precision(0)
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.prereq(rxBytes)
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;
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totBandwidth
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.name(name() + ".totBandwidth")
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.desc("Total Bandwidth (bits/s)")
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.precision(0)
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.prereq(totBytes)
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;
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totPackets
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.name(name() + ".totPackets")
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.desc("Total Packets")
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.precision(0)
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.prereq(totBytes)
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;
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totBytes
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.name(name() + ".totBytes")
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.desc("Total Bytes")
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.precision(0)
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.prereq(totBytes)
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;
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totPacketRate
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.name(name() + ".totPPS")
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.desc("Total Tranmission Rate (packets/s)")
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.precision(0)
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.prereq(totBytes)
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;
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txPacketRate
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.name(name() + ".txPPS")
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.desc("Packet Tranmission Rate (packets/s)")
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.precision(0)
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.prereq(txBytes)
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;
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rxPacketRate
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.name(name() + ".rxPPS")
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.desc("Packet Reception Rate (packets/s)")
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.precision(0)
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.prereq(rxBytes)
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;
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postedSwi
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.name(name() + ".postedSwi")
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.desc("number of software interrupts posted to CPU")
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.precision(0)
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;
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totalSwi
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.name(name() + ".totalSwi")
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.desc("total number of Swi written to ISR")
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.precision(0)
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;
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coalescedSwi
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.name(name() + ".coalescedSwi")
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.desc("average number of Swi's coalesced into each post")
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.precision(0)
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;
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postedRxIdle
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.name(name() + ".postedRxIdle")
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.desc("number of rxIdle interrupts posted to CPU")
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.precision(0)
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;
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totalRxIdle
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.name(name() + ".totalRxIdle")
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.desc("total number of RxIdle written to ISR")
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.precision(0)
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;
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coalescedRxIdle
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.name(name() + ".coalescedRxIdle")
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.desc("average number of RxIdle's coalesced into each post")
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.precision(0)
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;
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postedRxOk
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.name(name() + ".postedRxOk")
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.desc("number of RxOk interrupts posted to CPU")
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.precision(0)
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;
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totalRxOk
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.name(name() + ".totalRxOk")
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.desc("total number of RxOk written to ISR")
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.precision(0)
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;
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coalescedRxOk
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.name(name() + ".coalescedRxOk")
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.desc("average number of RxOk's coalesced into each post")
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.precision(0)
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;
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postedRxDesc
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.name(name() + ".postedRxDesc")
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.desc("number of RxDesc interrupts posted to CPU")
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.precision(0)
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;
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totalRxDesc
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.name(name() + ".totalRxDesc")
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.desc("total number of RxDesc written to ISR")
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.precision(0)
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;
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coalescedRxDesc
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.name(name() + ".coalescedRxDesc")
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.desc("average number of RxDesc's coalesced into each post")
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.precision(0)
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;
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postedTxOk
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.name(name() + ".postedTxOk")
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.desc("number of TxOk interrupts posted to CPU")
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.precision(0)
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;
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totalTxOk
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.name(name() + ".totalTxOk")
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.desc("total number of TxOk written to ISR")
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.precision(0)
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;
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coalescedTxOk
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.name(name() + ".coalescedTxOk")
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.desc("average number of TxOk's coalesced into each post")
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.precision(0)
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;
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postedTxIdle
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.name(name() + ".postedTxIdle")
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.desc("number of TxIdle interrupts posted to CPU")
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.precision(0)
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;
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totalTxIdle
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.name(name() + ".totalTxIdle")
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.desc("total number of TxIdle written to ISR")
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.precision(0)
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;
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coalescedTxIdle
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.name(name() + ".coalescedTxIdle")
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.desc("average number of TxIdle's coalesced into each post")
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.precision(0)
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;
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postedTxDesc
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.name(name() + ".postedTxDesc")
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.desc("number of TxDesc interrupts posted to CPU")
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.precision(0)
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;
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totalTxDesc
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.name(name() + ".totalTxDesc")
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.desc("total number of TxDesc written to ISR")
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.precision(0)
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;
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coalescedTxDesc
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.name(name() + ".coalescedTxDesc")
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.desc("average number of TxDesc's coalesced into each post")
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.precision(0)
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;
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postedRxOrn
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.name(name() + ".postedRxOrn")
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.desc("number of RxOrn posted to CPU")
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.precision(0)
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;
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totalRxOrn
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.name(name() + ".totalRxOrn")
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.desc("total number of RxOrn written to ISR")
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.precision(0)
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;
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coalescedRxOrn
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.name(name() + ".coalescedRxOrn")
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.desc("average number of RxOrn's coalesced into each post")
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.precision(0)
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;
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coalescedTotal
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.name(name() + ".coalescedTotal")
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.desc("average number of interrupts coalesced into each post")
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.precision(0)
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;
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postedInterrupts
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.name(name() + ".postedInterrupts")
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.desc("number of posts to CPU")
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.precision(0)
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;
|
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droppedPackets
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.name(name() + ".droppedPackets")
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.desc("number of packets dropped")
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.precision(0)
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;
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coalescedSwi = totalSwi / postedInterrupts;
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coalescedRxIdle = totalRxIdle / postedInterrupts;
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coalescedRxOk = totalRxOk / postedInterrupts;
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coalescedRxDesc = totalRxDesc / postedInterrupts;
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coalescedTxOk = totalTxOk / postedInterrupts;
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coalescedTxIdle = totalTxIdle / postedInterrupts;
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coalescedTxDesc = totalTxDesc / postedInterrupts;
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coalescedRxOrn = totalRxOrn / postedInterrupts;
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coalescedTotal = (totalSwi + totalRxIdle + totalRxOk + totalRxDesc +
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totalTxOk + totalTxIdle + totalTxDesc +
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totalRxOrn) / postedInterrupts;
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txBandwidth = txBytes * Stats::constant(8) / simSeconds;
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rxBandwidth = rxBytes * Stats::constant(8) / simSeconds;
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totBandwidth = txBandwidth + rxBandwidth;
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totBytes = txBytes + rxBytes;
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totPackets = txPackets + rxPackets;
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|
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txPacketRate = txPackets / simSeconds;
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rxPacketRate = rxPackets / simSeconds;
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}
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|
|
/**
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* This is to read the PCI general configuration registers
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*/
|
|
void
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NSGigE::readConfig(int offset, int size, uint8_t *data)
|
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{
|
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if (offset < PCI_DEVICE_SPECIFIC)
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PciDev::readConfig(offset, size, data);
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else
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panic("Device specific PCI config space not implemented!\n");
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}
|
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|
|
/**
|
|
* This is to write to the PCI general configuration registers
|
|
*/
|
|
void
|
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NSGigE::writeConfig(int offset, int size, const uint8_t* data)
|
|
{
|
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if (offset < PCI_DEVICE_SPECIFIC)
|
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PciDev::writeConfig(offset, size, data);
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else
|
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panic("Device specific PCI config space not implemented!\n");
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|
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// Need to catch writes to BARs to update the PIO interface
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switch (offset) {
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// seems to work fine without all these PCI settings, but i
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// put in the IO to double check, an assertion will fail if we
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// need to properly implement it
|
|
case PCI_COMMAND:
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if (config.data[offset] & PCI_CMD_IOSE)
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ioEnable = true;
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else
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ioEnable = false;
|
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|
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#if 0
|
|
if (config.data[offset] & PCI_CMD_BME) {
|
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bmEnabled = true;
|
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}
|
|
else {
|
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bmEnabled = false;
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}
|
|
|
|
if (config.data[offset] & PCI_CMD_MSE) {
|
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memEnable = true;
|
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}
|
|
else {
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memEnable = false;
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}
|
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#endif
|
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break;
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|
|
case PCI0_BASE_ADDR0:
|
|
if (BARAddrs[0] != 0) {
|
|
if (pioInterface)
|
|
pioInterface->addAddrRange(RangeSize(BARAddrs[0], BARSize[0]));
|
|
|
|
BARAddrs[0] &= EV5::PAddrUncachedMask;
|
|
}
|
|
break;
|
|
case PCI0_BASE_ADDR1:
|
|
if (BARAddrs[1] != 0) {
|
|
if (pioInterface)
|
|
pioInterface->addAddrRange(RangeSize(BARAddrs[1], BARSize[1]));
|
|
|
|
BARAddrs[1] &= EV5::PAddrUncachedMask;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This reads the device registers, which are detailed in the NS83820
|
|
* spec sheet
|
|
*/
|
|
Fault
|
|
NSGigE::read(MemReqPtr &req, uint8_t *data)
|
|
{
|
|
assert(ioEnable);
|
|
|
|
//The mask is to give you only the offset into the device register file
|
|
Addr daddr = req->paddr & 0xfff;
|
|
DPRINTF(EthernetPIO, "read da=%#x pa=%#x va=%#x size=%d\n",
|
|
daddr, req->paddr, req->vaddr, req->size);
|
|
|
|
|
|
// there are some reserved registers, you can see ns_gige_reg.h and
|
|
// the spec sheet for details
|
|
if (daddr > LAST && daddr <= RESERVED) {
|
|
panic("Accessing reserved register");
|
|
} else if (daddr > RESERVED && daddr <= 0x3FC) {
|
|
readConfig(daddr & 0xff, req->size, data);
|
|
return NoFault;
|
|
} else if (daddr >= MIB_START && daddr <= MIB_END) {
|
|
// don't implement all the MIB's. hopefully the kernel
|
|
// doesn't actually DEPEND upon their values
|
|
// MIB are just hardware stats keepers
|
|
uint32_t ® = *(uint32_t *) data;
|
|
reg = 0;
|
|
return NoFault;
|
|
} else if (daddr > 0x3FC)
|
|
panic("Something is messed up!\n");
|
|
|
|
switch (req->size) {
|
|
case sizeof(uint32_t):
|
|
{
|
|
uint32_t ® = *(uint32_t *)data;
|
|
uint16_t rfaddr;
|
|
|
|
switch (daddr) {
|
|
case CR:
|
|
reg = regs.command;
|
|
//these are supposed to be cleared on a read
|
|
reg &= ~(CR_RXD | CR_TXD | CR_TXR | CR_RXR);
|
|
break;
|
|
|
|
case CFGR:
|
|
reg = regs.config;
|
|
break;
|
|
|
|
case MEAR:
|
|
reg = regs.mear;
|
|
break;
|
|
|
|
case PTSCR:
|
|
reg = regs.ptscr;
|
|
break;
|
|
|
|
case ISR:
|
|
reg = regs.isr;
|
|
devIntrClear(ISR_ALL);
|
|
break;
|
|
|
|
case IMR:
|
|
reg = regs.imr;
|
|
break;
|
|
|
|
case IER:
|
|
reg = regs.ier;
|
|
break;
|
|
|
|
case IHR:
|
|
reg = regs.ihr;
|
|
break;
|
|
|
|
case TXDP:
|
|
reg = regs.txdp;
|
|
break;
|
|
|
|
case TXDP_HI:
|
|
reg = regs.txdp_hi;
|
|
break;
|
|
|
|
case TX_CFG:
|
|
reg = regs.txcfg;
|
|
break;
|
|
|
|
case GPIOR:
|
|
reg = regs.gpior;
|
|
break;
|
|
|
|
case RXDP:
|
|
reg = regs.rxdp;
|
|
break;
|
|
|
|
case RXDP_HI:
|
|
reg = regs.rxdp_hi;
|
|
break;
|
|
|
|
case RX_CFG:
|
|
reg = regs.rxcfg;
|
|
break;
|
|
|
|
case PQCR:
|
|
reg = regs.pqcr;
|
|
break;
|
|
|
|
case WCSR:
|
|
reg = regs.wcsr;
|
|
break;
|
|
|
|
case PCR:
|
|
reg = regs.pcr;
|
|
break;
|
|
|
|
// see the spec sheet for how RFCR and RFDR work
|
|
// basically, you write to RFCR to tell the machine
|
|
// what you want to do next, then you act upon RFDR,
|
|
// and the device will be prepared b/c of what you
|
|
// wrote to RFCR
|
|
case RFCR:
|
|
reg = regs.rfcr;
|
|
break;
|
|
|
|
case RFDR:
|
|
rfaddr = (uint16_t)(regs.rfcr & RFCR_RFADDR);
|
|
switch (rfaddr) {
|
|
// Read from perfect match ROM octets
|
|
case 0x000:
|
|
reg = rom.perfectMatch[1];
|
|
reg = reg << 8;
|
|
reg += rom.perfectMatch[0];
|
|
break;
|
|
case 0x002:
|
|
reg = rom.perfectMatch[3] << 8;
|
|
reg += rom.perfectMatch[2];
|
|
break;
|
|
case 0x004:
|
|
reg = rom.perfectMatch[5] << 8;
|
|
reg += rom.perfectMatch[4];
|
|
break;
|
|
default:
|
|
// Read filter hash table
|
|
if (rfaddr >= FHASH_ADDR &&
|
|
rfaddr < FHASH_ADDR + FHASH_SIZE) {
|
|
|
|
// Only word-aligned reads supported
|
|
if (rfaddr % 2)
|
|
panic("unaligned read from filter hash table!");
|
|
|
|
reg = rom.filterHash[rfaddr - FHASH_ADDR + 1] << 8;
|
|
reg += rom.filterHash[rfaddr - FHASH_ADDR];
|
|
break;
|
|
}
|
|
|
|
panic("reading RFDR for something other than pattern"
|
|
" matching or hashing! %#x\n", rfaddr);
|
|
}
|
|
break;
|
|
|
|
case SRR:
|
|
reg = regs.srr;
|
|
break;
|
|
|
|
case MIBC:
|
|
reg = regs.mibc;
|
|
reg &= ~(MIBC_MIBS | MIBC_ACLR);
|
|
break;
|
|
|
|
case VRCR:
|
|
reg = regs.vrcr;
|
|
break;
|
|
|
|
case VTCR:
|
|
reg = regs.vtcr;
|
|
break;
|
|
|
|
case VDR:
|
|
reg = regs.vdr;
|
|
break;
|
|
|
|
case CCSR:
|
|
reg = regs.ccsr;
|
|
break;
|
|
|
|
case TBICR:
|
|
reg = regs.tbicr;
|
|
break;
|
|
|
|
case TBISR:
|
|
reg = regs.tbisr;
|
|
break;
|
|
|
|
case TANAR:
|
|
reg = regs.tanar;
|
|
break;
|
|
|
|
case TANLPAR:
|
|
reg = regs.tanlpar;
|
|
break;
|
|
|
|
case TANER:
|
|
reg = regs.taner;
|
|
break;
|
|
|
|
case TESR:
|
|
reg = regs.tesr;
|
|
break;
|
|
|
|
case M5REG:
|
|
reg = 0;
|
|
if (params()->rx_thread)
|
|
reg |= M5REG_RX_THREAD;
|
|
if (params()->tx_thread)
|
|
reg |= M5REG_TX_THREAD;
|
|
if (params()->rss)
|
|
reg |= M5REG_RSS;
|
|
break;
|
|
|
|
default:
|
|
panic("reading unimplemented register: addr=%#x", daddr);
|
|
}
|
|
|
|
DPRINTF(EthernetPIO, "read from %#x: data=%d data=%#x\n",
|
|
daddr, reg, reg);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
panic("accessing register with invalid size: addr=%#x, size=%d",
|
|
daddr, req->size);
|
|
}
|
|
|
|
return NoFault;
|
|
}
|
|
|
|
Fault
|
|
NSGigE::write(MemReqPtr &req, const uint8_t *data)
|
|
{
|
|
assert(ioEnable);
|
|
|
|
Addr daddr = req->paddr & 0xfff;
|
|
DPRINTF(EthernetPIO, "write da=%#x pa=%#x va=%#x size=%d\n",
|
|
daddr, req->paddr, req->vaddr, req->size);
|
|
|
|
if (daddr > LAST && daddr <= RESERVED) {
|
|
panic("Accessing reserved register");
|
|
} else if (daddr > RESERVED && daddr <= 0x3FC) {
|
|
writeConfig(daddr & 0xff, req->size, data);
|
|
return NoFault;
|
|
} else if (daddr > 0x3FC)
|
|
panic("Something is messed up!\n");
|
|
|
|
if (req->size == sizeof(uint32_t)) {
|
|
uint32_t reg = *(uint32_t *)data;
|
|
uint16_t rfaddr;
|
|
|
|
DPRINTF(EthernetPIO, "write data=%d data=%#x\n", reg, reg);
|
|
|
|
switch (daddr) {
|
|
case CR:
|
|
regs.command = reg;
|
|
if (reg & CR_TXD) {
|
|
txEnable = false;
|
|
} else if (reg & CR_TXE) {
|
|
txEnable = true;
|
|
|
|
// the kernel is enabling the transmit machine
|
|
if (txState == txIdle)
|
|
txKick();
|
|
}
|
|
|
|
if (reg & CR_RXD) {
|
|
rxEnable = false;
|
|
} else if (reg & CR_RXE) {
|
|
rxEnable = true;
|
|
|
|
if (rxState == rxIdle)
|
|
rxKick();
|
|
}
|
|
|
|
if (reg & CR_TXR)
|
|
txReset();
|
|
|
|
if (reg & CR_RXR)
|
|
rxReset();
|
|
|
|
if (reg & CR_SWI)
|
|
devIntrPost(ISR_SWI);
|
|
|
|
if (reg & CR_RST) {
|
|
txReset();
|
|
rxReset();
|
|
|
|
regsReset();
|
|
}
|
|
break;
|
|
|
|
case CFGR:
|
|
if (reg & CFGR_LNKSTS ||
|
|
reg & CFGR_SPDSTS ||
|
|
reg & CFGR_DUPSTS ||
|
|
reg & CFGR_RESERVED ||
|
|
reg & CFGR_T64ADDR ||
|
|
reg & CFGR_PCI64_DET)
|
|
|
|
// First clear all writable bits
|
|
regs.config &= CFGR_LNKSTS | CFGR_SPDSTS | CFGR_DUPSTS |
|
|
CFGR_RESERVED | CFGR_T64ADDR |
|
|
CFGR_PCI64_DET;
|
|
// Now set the appropriate writable bits
|
|
regs.config |= reg & ~(CFGR_LNKSTS | CFGR_SPDSTS | CFGR_DUPSTS |
|
|
CFGR_RESERVED | CFGR_T64ADDR |
|
|
CFGR_PCI64_DET);
|
|
|
|
// all these #if 0's are because i don't THINK the kernel needs to
|
|
// have these implemented. if there is a problem relating to one of
|
|
// these, you may need to add functionality in.
|
|
if (reg & CFGR_TBI_EN) ;
|
|
if (reg & CFGR_MODE_1000) ;
|
|
|
|
if (reg & CFGR_AUTO_1000)
|
|
panic("CFGR_AUTO_1000 not implemented!\n");
|
|
|
|
if (reg & CFGR_PINT_DUPSTS ||
|
|
reg & CFGR_PINT_LNKSTS ||
|
|
reg & CFGR_PINT_SPDSTS)
|
|
;
|
|
|
|
if (reg & CFGR_TMRTEST) ;
|
|
if (reg & CFGR_MRM_DIS) ;
|
|
if (reg & CFGR_MWI_DIS) ;
|
|
|
|
if (reg & CFGR_T64ADDR) ;
|
|
// panic("CFGR_T64ADDR is read only register!\n");
|
|
|
|
if (reg & CFGR_PCI64_DET)
|
|
panic("CFGR_PCI64_DET is read only register!\n");
|
|
|
|
if (reg & CFGR_DATA64_EN) ;
|
|
if (reg & CFGR_M64ADDR) ;
|
|
if (reg & CFGR_PHY_RST) ;
|
|
if (reg & CFGR_PHY_DIS) ;
|
|
|
|
if (reg & CFGR_EXTSTS_EN)
|
|
extstsEnable = true;
|
|
else
|
|
extstsEnable = false;
|
|
|
|
if (reg & CFGR_REQALG) ;
|
|
if (reg & CFGR_SB) ;
|
|
if (reg & CFGR_POW) ;
|
|
if (reg & CFGR_EXD) ;
|
|
if (reg & CFGR_PESEL) ;
|
|
if (reg & CFGR_BROM_DIS) ;
|
|
if (reg & CFGR_EXT_125) ;
|
|
if (reg & CFGR_BEM) ;
|
|
break;
|
|
|
|
case MEAR:
|
|
// Clear writable bits
|
|
regs.mear &= MEAR_EEDO;
|
|
// Set appropriate writable bits
|
|
regs.mear |= reg & ~MEAR_EEDO;
|
|
|
|
// FreeBSD uses the EEPROM to read PMATCH (for the MAC address)
|
|
// even though it could get it through RFDR
|
|
if (reg & MEAR_EESEL) {
|
|
// Rising edge of clock
|
|
if (reg & MEAR_EECLK && !eepromClk)
|
|
eepromKick();
|
|
}
|
|
else {
|
|
eepromState = eepromStart;
|
|
regs.mear &= ~MEAR_EEDI;
|
|
}
|
|
|
|
eepromClk = reg & MEAR_EECLK;
|
|
|
|
// since phy is completely faked, MEAR_MD* don't matter
|
|
if (reg & MEAR_MDIO) ;
|
|
if (reg & MEAR_MDDIR) ;
|
|
if (reg & MEAR_MDC) ;
|
|
break;
|
|
|
|
case PTSCR:
|
|
regs.ptscr = reg & ~(PTSCR_RBIST_RDONLY);
|
|
// these control BISTs for various parts of chip - we
|
|
// don't care or do just fake that the BIST is done
|
|
if (reg & PTSCR_RBIST_EN)
|
|
regs.ptscr |= PTSCR_RBIST_DONE;
|
|
if (reg & PTSCR_EEBIST_EN)
|
|
regs.ptscr &= ~PTSCR_EEBIST_EN;
|
|
if (reg & PTSCR_EELOAD_EN)
|
|
regs.ptscr &= ~PTSCR_EELOAD_EN;
|
|
break;
|
|
|
|
case ISR: /* writing to the ISR has no effect */
|
|
panic("ISR is a read only register!\n");
|
|
|
|
case IMR:
|
|
regs.imr = reg;
|
|
devIntrChangeMask();
|
|
break;
|
|
|
|
case IER:
|
|
regs.ier = reg;
|
|
break;
|
|
|
|
case IHR:
|
|
regs.ihr = reg;
|
|
/* not going to implement real interrupt holdoff */
|
|
break;
|
|
|
|
case TXDP:
|
|
regs.txdp = (reg & 0xFFFFFFFC);
|
|
assert(txState == txIdle);
|
|
CTDD = false;
|
|
break;
|
|
|
|
case TXDP_HI:
|
|
regs.txdp_hi = reg;
|
|
break;
|
|
|
|
case TX_CFG:
|
|
regs.txcfg = reg;
|
|
#if 0
|
|
if (reg & TX_CFG_CSI) ;
|
|
if (reg & TX_CFG_HBI) ;
|
|
if (reg & TX_CFG_MLB) ;
|
|
if (reg & TX_CFG_ATP) ;
|
|
if (reg & TX_CFG_ECRETRY) {
|
|
/*
|
|
* this could easily be implemented, but considering
|
|
* the network is just a fake pipe, wouldn't make
|
|
* sense to do this
|
|
*/
|
|
}
|
|
|
|
if (reg & TX_CFG_BRST_DIS) ;
|
|
#endif
|
|
|
|
#if 0
|
|
/* we handle our own DMA, ignore the kernel's exhortations */
|
|
if (reg & TX_CFG_MXDMA) ;
|
|
#endif
|
|
|
|
// also, we currently don't care about fill/drain
|
|
// thresholds though this may change in the future with
|
|
// more realistic networks or a driver which changes it
|
|
// according to feedback
|
|
|
|
break;
|
|
|
|
case GPIOR:
|
|
// Only write writable bits
|
|
regs.gpior &= GPIOR_UNUSED | GPIOR_GP5_IN | GPIOR_GP4_IN
|
|
| GPIOR_GP3_IN | GPIOR_GP2_IN | GPIOR_GP1_IN;
|
|
regs.gpior |= reg & ~(GPIOR_UNUSED | GPIOR_GP5_IN | GPIOR_GP4_IN
|
|
| GPIOR_GP3_IN | GPIOR_GP2_IN | GPIOR_GP1_IN);
|
|
/* these just control general purpose i/o pins, don't matter */
|
|
break;
|
|
|
|
case RXDP:
|
|
regs.rxdp = reg;
|
|
CRDD = false;
|
|
break;
|
|
|
|
case RXDP_HI:
|
|
regs.rxdp_hi = reg;
|
|
break;
|
|
|
|
case RX_CFG:
|
|
regs.rxcfg = reg;
|
|
#if 0
|
|
if (reg & RX_CFG_AEP) ;
|
|
if (reg & RX_CFG_ARP) ;
|
|
if (reg & RX_CFG_STRIPCRC) ;
|
|
if (reg & RX_CFG_RX_RD) ;
|
|
if (reg & RX_CFG_ALP) ;
|
|
if (reg & RX_CFG_AIRL) ;
|
|
|
|
/* we handle our own DMA, ignore what kernel says about it */
|
|
if (reg & RX_CFG_MXDMA) ;
|
|
|
|
//also, we currently don't care about fill/drain thresholds
|
|
//though this may change in the future with more realistic
|
|
//networks or a driver which changes it according to feedback
|
|
if (reg & (RX_CFG_DRTH | RX_CFG_DRTH0)) ;
|
|
#endif
|
|
break;
|
|
|
|
case PQCR:
|
|
/* there is no priority queueing used in the linux 2.6 driver */
|
|
regs.pqcr = reg;
|
|
break;
|
|
|
|
case WCSR:
|
|
/* not going to implement wake on LAN */
|
|
regs.wcsr = reg;
|
|
break;
|
|
|
|
case PCR:
|
|
/* not going to implement pause control */
|
|
regs.pcr = reg;
|
|
break;
|
|
|
|
case RFCR:
|
|
regs.rfcr = reg;
|
|
|
|
rxFilterEnable = (reg & RFCR_RFEN) ? true : false;
|
|
acceptBroadcast = (reg & RFCR_AAB) ? true : false;
|
|
acceptMulticast = (reg & RFCR_AAM) ? true : false;
|
|
acceptUnicast = (reg & RFCR_AAU) ? true : false;
|
|
acceptPerfect = (reg & RFCR_APM) ? true : false;
|
|
acceptArp = (reg & RFCR_AARP) ? true : false;
|
|
multicastHashEnable = (reg & RFCR_MHEN) ? true : false;
|
|
|
|
#if 0
|
|
if (reg & RFCR_APAT)
|
|
panic("RFCR_APAT not implemented!\n");
|
|
#endif
|
|
if (reg & RFCR_UHEN)
|
|
panic("Unicast hash filtering not used by drivers!\n");
|
|
|
|
if (reg & RFCR_ULM)
|
|
panic("RFCR_ULM not implemented!\n");
|
|
|
|
break;
|
|
|
|
case RFDR:
|
|
rfaddr = (uint16_t)(regs.rfcr & RFCR_RFADDR);
|
|
switch (rfaddr) {
|
|
case 0x000:
|
|
rom.perfectMatch[0] = (uint8_t)reg;
|
|
rom.perfectMatch[1] = (uint8_t)(reg >> 8);
|
|
break;
|
|
case 0x002:
|
|
rom.perfectMatch[2] = (uint8_t)reg;
|
|
rom.perfectMatch[3] = (uint8_t)(reg >> 8);
|
|
break;
|
|
case 0x004:
|
|
rom.perfectMatch[4] = (uint8_t)reg;
|
|
rom.perfectMatch[5] = (uint8_t)(reg >> 8);
|
|
break;
|
|
default:
|
|
|
|
if (rfaddr >= FHASH_ADDR &&
|
|
rfaddr < FHASH_ADDR + FHASH_SIZE) {
|
|
|
|
// Only word-aligned writes supported
|
|
if (rfaddr % 2)
|
|
panic("unaligned write to filter hash table!");
|
|
|
|
rom.filterHash[rfaddr - FHASH_ADDR] = (uint8_t)reg;
|
|
rom.filterHash[rfaddr - FHASH_ADDR + 1]
|
|
= (uint8_t)(reg >> 8);
|
|
break;
|
|
}
|
|
panic("writing RFDR for something other than pattern matching\
|
|
or hashing! %#x\n", rfaddr);
|
|
}
|
|
|
|
case BRAR:
|
|
regs.brar = reg;
|
|
break;
|
|
|
|
case BRDR:
|
|
panic("the driver never uses BRDR, something is wrong!\n");
|
|
|
|
case SRR:
|
|
panic("SRR is read only register!\n");
|
|
|
|
case MIBC:
|
|
panic("the driver never uses MIBC, something is wrong!\n");
|
|
|
|
case VRCR:
|
|
regs.vrcr = reg;
|
|
break;
|
|
|
|
case VTCR:
|
|
regs.vtcr = reg;
|
|
break;
|
|
|
|
case VDR:
|
|
panic("the driver never uses VDR, something is wrong!\n");
|
|
|
|
case CCSR:
|
|
/* not going to implement clockrun stuff */
|
|
regs.ccsr = reg;
|
|
break;
|
|
|
|
case TBICR:
|
|
regs.tbicr = reg;
|
|
if (reg & TBICR_MR_LOOPBACK)
|
|
panic("TBICR_MR_LOOPBACK never used, something wrong!\n");
|
|
|
|
if (reg & TBICR_MR_AN_ENABLE) {
|
|
regs.tanlpar = regs.tanar;
|
|
regs.tbisr |= (TBISR_MR_AN_COMPLETE | TBISR_MR_LINK_STATUS);
|
|
}
|
|
|
|
#if 0
|
|
if (reg & TBICR_MR_RESTART_AN) ;
|
|
#endif
|
|
|
|
break;
|
|
|
|
case TBISR:
|
|
panic("TBISR is read only register!\n");
|
|
|
|
case TANAR:
|
|
// Only write the writable bits
|
|
regs.tanar &= TANAR_RF1 | TANAR_RF2 | TANAR_UNUSED;
|
|
regs.tanar |= reg & ~(TANAR_RF1 | TANAR_RF2 | TANAR_UNUSED);
|
|
|
|
// Pause capability unimplemented
|
|
#if 0
|
|
if (reg & TANAR_PS2) ;
|
|
if (reg & TANAR_PS1) ;
|
|
#endif
|
|
|
|
break;
|
|
|
|
case TANLPAR:
|
|
panic("this should only be written to by the fake phy!\n");
|
|
|
|
case TANER:
|
|
panic("TANER is read only register!\n");
|
|
|
|
case TESR:
|
|
regs.tesr = reg;
|
|
break;
|
|
|
|
default:
|
|
panic("invalid register access daddr=%#x", daddr);
|
|
}
|
|
} else {
|
|
panic("Invalid Request Size");
|
|
}
|
|
|
|
return NoFault;
|
|
}
|
|
|
|
void
|
|
NSGigE::devIntrPost(uint32_t interrupts)
|
|
{
|
|
if (interrupts & ISR_RESERVE)
|
|
panic("Cannot set a reserved interrupt");
|
|
|
|
if (interrupts & ISR_NOIMPL)
|
|
warn("interrupt not implemented %#x\n", interrupts);
|
|
|
|
interrupts &= ISR_IMPL;
|
|
regs.isr |= interrupts;
|
|
|
|
if (interrupts & regs.imr) {
|
|
if (interrupts & ISR_SWI) {
|
|
totalSwi++;
|
|
}
|
|
if (interrupts & ISR_RXIDLE) {
|
|
totalRxIdle++;
|
|
}
|
|
if (interrupts & ISR_RXOK) {
|
|
totalRxOk++;
|
|
}
|
|
if (interrupts & ISR_RXDESC) {
|
|
totalRxDesc++;
|
|
}
|
|
if (interrupts & ISR_TXOK) {
|
|
totalTxOk++;
|
|
}
|
|
if (interrupts & ISR_TXIDLE) {
|
|
totalTxIdle++;
|
|
}
|
|
if (interrupts & ISR_TXDESC) {
|
|
totalTxDesc++;
|
|
}
|
|
if (interrupts & ISR_RXORN) {
|
|
totalRxOrn++;
|
|
}
|
|
}
|
|
|
|
DPRINTF(EthernetIntr,
|
|
"interrupt written to ISR: intr=%#x isr=%#x imr=%#x\n",
|
|
interrupts, regs.isr, regs.imr);
|
|
|
|
if ((regs.isr & regs.imr)) {
|
|
Tick when = curTick;
|
|
if ((regs.isr & regs.imr & ISR_NODELAY) == 0)
|
|
when += intrDelay;
|
|
cpuIntrPost(when);
|
|
}
|
|
}
|
|
|
|
/* writing this interrupt counting stats inside this means that this function
|
|
is now limited to being used to clear all interrupts upon the kernel
|
|
reading isr and servicing. just telling you in case you were thinking
|
|
of expanding use.
|
|
*/
|
|
void
|
|
NSGigE::devIntrClear(uint32_t interrupts)
|
|
{
|
|
if (interrupts & ISR_RESERVE)
|
|
panic("Cannot clear a reserved interrupt");
|
|
|
|
if (regs.isr & regs.imr & ISR_SWI) {
|
|
postedSwi++;
|
|
}
|
|
if (regs.isr & regs.imr & ISR_RXIDLE) {
|
|
postedRxIdle++;
|
|
}
|
|
if (regs.isr & regs.imr & ISR_RXOK) {
|
|
postedRxOk++;
|
|
}
|
|
if (regs.isr & regs.imr & ISR_RXDESC) {
|
|
postedRxDesc++;
|
|
}
|
|
if (regs.isr & regs.imr & ISR_TXOK) {
|
|
postedTxOk++;
|
|
}
|
|
if (regs.isr & regs.imr & ISR_TXIDLE) {
|
|
postedTxIdle++;
|
|
}
|
|
if (regs.isr & regs.imr & ISR_TXDESC) {
|
|
postedTxDesc++;
|
|
}
|
|
if (regs.isr & regs.imr & ISR_RXORN) {
|
|
postedRxOrn++;
|
|
}
|
|
|
|
if (regs.isr & regs.imr & ISR_IMPL)
|
|
postedInterrupts++;
|
|
|
|
interrupts &= ~ISR_NOIMPL;
|
|
regs.isr &= ~interrupts;
|
|
|
|
DPRINTF(EthernetIntr,
|
|
"interrupt cleared from ISR: intr=%x isr=%x imr=%x\n",
|
|
interrupts, regs.isr, regs.imr);
|
|
|
|
if (!(regs.isr & regs.imr))
|
|
cpuIntrClear();
|
|
}
|
|
|
|
void
|
|
NSGigE::devIntrChangeMask()
|
|
{
|
|
DPRINTF(EthernetIntr, "interrupt mask changed: isr=%x imr=%x masked=%x\n",
|
|
regs.isr, regs.imr, regs.isr & regs.imr);
|
|
|
|
if (regs.isr & regs.imr)
|
|
cpuIntrPost(curTick);
|
|
else
|
|
cpuIntrClear();
|
|
}
|
|
|
|
void
|
|
NSGigE::cpuIntrPost(Tick when)
|
|
{
|
|
// If the interrupt you want to post is later than an interrupt
|
|
// already scheduled, just let it post in the coming one and don't
|
|
// schedule another.
|
|
// HOWEVER, must be sure that the scheduled intrTick is in the
|
|
// future (this was formerly the source of a bug)
|
|
/**
|
|
* @todo this warning should be removed and the intrTick code should
|
|
* be fixed.
|
|
*/
|
|
assert(when >= curTick);
|
|
assert(intrTick >= curTick || intrTick == 0);
|
|
if (when > intrTick && intrTick != 0) {
|
|
DPRINTF(EthernetIntr, "don't need to schedule event...intrTick=%d\n",
|
|
intrTick);
|
|
return;
|
|
}
|
|
|
|
intrTick = when;
|
|
if (intrTick < curTick) {
|
|
debug_break();
|
|
intrTick = curTick;
|
|
}
|
|
|
|
DPRINTF(EthernetIntr, "going to schedule an interrupt for intrTick=%d\n",
|
|
intrTick);
|
|
|
|
if (intrEvent)
|
|
intrEvent->squash();
|
|
intrEvent = new IntrEvent(this, true);
|
|
intrEvent->schedule(intrTick);
|
|
}
|
|
|
|
void
|
|
NSGigE::cpuInterrupt()
|
|
{
|
|
assert(intrTick == curTick);
|
|
|
|
// Whether or not there's a pending interrupt, we don't care about
|
|
// it anymore
|
|
intrEvent = 0;
|
|
intrTick = 0;
|
|
|
|
// Don't send an interrupt if there's already one
|
|
if (cpuPendingIntr) {
|
|
DPRINTF(EthernetIntr,
|
|
"would send an interrupt now, but there's already pending\n");
|
|
} else {
|
|
// Send interrupt
|
|
cpuPendingIntr = true;
|
|
|
|
DPRINTF(EthernetIntr, "posting interrupt\n");
|
|
intrPost();
|
|
}
|
|
}
|
|
|
|
void
|
|
NSGigE::cpuIntrClear()
|
|
{
|
|
if (!cpuPendingIntr)
|
|
return;
|
|
|
|
if (intrEvent) {
|
|
intrEvent->squash();
|
|
intrEvent = 0;
|
|
}
|
|
|
|
intrTick = 0;
|
|
|
|
cpuPendingIntr = false;
|
|
|
|
DPRINTF(EthernetIntr, "clearing interrupt\n");
|
|
intrClear();
|
|
}
|
|
|
|
bool
|
|
NSGigE::cpuIntrPending() const
|
|
{ return cpuPendingIntr; }
|
|
|
|
void
|
|
NSGigE::txReset()
|
|
{
|
|
|
|
DPRINTF(Ethernet, "transmit reset\n");
|
|
|
|
CTDD = false;
|
|
txEnable = false;;
|
|
txFragPtr = 0;
|
|
assert(txDescCnt == 0);
|
|
txFifo.clear();
|
|
txState = txIdle;
|
|
assert(txDmaState == dmaIdle);
|
|
}
|
|
|
|
void
|
|
NSGigE::rxReset()
|
|
{
|
|
DPRINTF(Ethernet, "receive reset\n");
|
|
|
|
CRDD = false;
|
|
assert(rxPktBytes == 0);
|
|
rxEnable = false;
|
|
rxFragPtr = 0;
|
|
assert(rxDescCnt == 0);
|
|
assert(rxDmaState == dmaIdle);
|
|
rxFifo.clear();
|
|
rxState = rxIdle;
|
|
}
|
|
|
|
void
|
|
NSGigE::regsReset()
|
|
{
|
|
memset(®s, 0, sizeof(regs));
|
|
regs.config = (CFGR_LNKSTS | CFGR_TBI_EN | CFGR_MODE_1000);
|
|
regs.mear = 0x12;
|
|
regs.txcfg = 0x120; // set drain threshold to 1024 bytes and
|
|
// fill threshold to 32 bytes
|
|
regs.rxcfg = 0x4; // set drain threshold to 16 bytes
|
|
regs.srr = 0x0103; // set the silicon revision to rev B or 0x103
|
|
regs.mibc = MIBC_FRZ;
|
|
regs.vdr = 0x81; // set the vlan tag type to 802.1q
|
|
regs.tesr = 0xc000; // TBI capable of both full and half duplex
|
|
regs.brar = 0xffffffff;
|
|
|
|
extstsEnable = false;
|
|
acceptBroadcast = false;
|
|
acceptMulticast = false;
|
|
acceptUnicast = false;
|
|
acceptPerfect = false;
|
|
acceptArp = false;
|
|
}
|
|
|
|
void
|
|
NSGigE::rxDmaReadCopy()
|
|
{
|
|
assert(rxDmaState == dmaReading);
|
|
|
|
physmem->dma_read((uint8_t *)rxDmaData, rxDmaAddr, rxDmaLen);
|
|
rxDmaState = dmaIdle;
|
|
|
|
DPRINTF(EthernetDMA, "rx dma read paddr=%#x len=%d\n",
|
|
rxDmaAddr, rxDmaLen);
|
|
DDUMP(EthernetDMA, rxDmaData, rxDmaLen);
|
|
}
|
|
|
|
bool
|
|
NSGigE::doRxDmaRead()
|
|
{
|
|
assert(rxDmaState == dmaIdle || rxDmaState == dmaReadWaiting);
|
|
rxDmaState = dmaReading;
|
|
|
|
if (dmaInterface && !rxDmaFree) {
|
|
if (dmaInterface->busy())
|
|
rxDmaState = dmaReadWaiting;
|
|
else
|
|
dmaInterface->doDMA(Read, rxDmaAddr, rxDmaLen, curTick,
|
|
&rxDmaReadEvent, true);
|
|
return true;
|
|
}
|
|
|
|
if (dmaReadDelay == 0 && dmaReadFactor == 0) {
|
|
rxDmaReadCopy();
|
|
return false;
|
|
}
|
|
|
|
Tick factor = ((rxDmaLen + ULL(63)) >> ULL(6)) * dmaReadFactor;
|
|
Tick start = curTick + dmaReadDelay + factor;
|
|
rxDmaReadEvent.schedule(start);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
NSGigE::rxDmaReadDone()
|
|
{
|
|
assert(rxDmaState == dmaReading);
|
|
rxDmaReadCopy();
|
|
|
|
// If the transmit state machine has a pending DMA, let it go first
|
|
if (txDmaState == dmaReadWaiting || txDmaState == dmaWriteWaiting)
|
|
txKick();
|
|
|
|
rxKick();
|
|
}
|
|
|
|
void
|
|
NSGigE::rxDmaWriteCopy()
|
|
{
|
|
assert(rxDmaState == dmaWriting);
|
|
|
|
physmem->dma_write(rxDmaAddr, (uint8_t *)rxDmaData, rxDmaLen);
|
|
rxDmaState = dmaIdle;
|
|
|
|
DPRINTF(EthernetDMA, "rx dma write paddr=%#x len=%d\n",
|
|
rxDmaAddr, rxDmaLen);
|
|
DDUMP(EthernetDMA, rxDmaData, rxDmaLen);
|
|
}
|
|
|
|
bool
|
|
NSGigE::doRxDmaWrite()
|
|
{
|
|
assert(rxDmaState == dmaIdle || rxDmaState == dmaWriteWaiting);
|
|
rxDmaState = dmaWriting;
|
|
|
|
if (dmaInterface && !rxDmaFree) {
|
|
if (dmaInterface->busy())
|
|
rxDmaState = dmaWriteWaiting;
|
|
else
|
|
dmaInterface->doDMA(WriteInvalidate, rxDmaAddr, rxDmaLen, curTick,
|
|
&rxDmaWriteEvent, true);
|
|
return true;
|
|
}
|
|
|
|
if (dmaWriteDelay == 0 && dmaWriteFactor == 0) {
|
|
rxDmaWriteCopy();
|
|
return false;
|
|
}
|
|
|
|
Tick factor = ((rxDmaLen + ULL(63)) >> ULL(6)) * dmaWriteFactor;
|
|
Tick start = curTick + dmaWriteDelay + factor;
|
|
rxDmaWriteEvent.schedule(start);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
NSGigE::rxDmaWriteDone()
|
|
{
|
|
assert(rxDmaState == dmaWriting);
|
|
rxDmaWriteCopy();
|
|
|
|
// If the transmit state machine has a pending DMA, let it go first
|
|
if (txDmaState == dmaReadWaiting || txDmaState == dmaWriteWaiting)
|
|
txKick();
|
|
|
|
rxKick();
|
|
}
|
|
|
|
void
|
|
NSGigE::rxKick()
|
|
{
|
|
bool is64bit = (bool)(regs.config & CFGR_M64ADDR);
|
|
|
|
DPRINTF(EthernetSM,
|
|
"receive kick rxState=%s (rxBuf.size=%d) %d-bit\n",
|
|
NsRxStateStrings[rxState], rxFifo.size(), is64bit ? 64 : 32);
|
|
|
|
Addr link, bufptr;
|
|
uint32_t &cmdsts = is64bit ? rxDesc64.cmdsts : rxDesc32.cmdsts;
|
|
uint32_t &extsts = is64bit ? rxDesc64.extsts : rxDesc32.extsts;
|
|
|
|
next:
|
|
if (clock) {
|
|
if (rxKickTick > curTick) {
|
|
DPRINTF(EthernetSM, "receive kick exiting, can't run till %d\n",
|
|
rxKickTick);
|
|
|
|
goto exit;
|
|
}
|
|
|
|
// Go to the next state machine clock tick.
|
|
rxKickTick = curTick + cycles(1);
|
|
}
|
|
|
|
switch(rxDmaState) {
|
|
case dmaReadWaiting:
|
|
if (doRxDmaRead())
|
|
goto exit;
|
|
break;
|
|
case dmaWriteWaiting:
|
|
if (doRxDmaWrite())
|
|
goto exit;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
link = is64bit ? (Addr)rxDesc64.link : (Addr)rxDesc32.link;
|
|
bufptr = is64bit ? (Addr)rxDesc64.bufptr : (Addr)rxDesc32.bufptr;
|
|
|
|
// see state machine from spec for details
|
|
// the way this works is, if you finish work on one state and can
|
|
// go directly to another, you do that through jumping to the
|
|
// label "next". however, if you have intermediate work, like DMA
|
|
// so that you can't go to the next state yet, you go to exit and
|
|
// exit the loop. however, when the DMA is done it will trigger
|
|
// an event and come back to this loop.
|
|
switch (rxState) {
|
|
case rxIdle:
|
|
if (!rxEnable) {
|
|
DPRINTF(EthernetSM, "Receive Disabled! Nothing to do.\n");
|
|
goto exit;
|
|
}
|
|
|
|
if (CRDD) {
|
|
rxState = rxDescRefr;
|
|
|
|
rxDmaAddr = regs.rxdp & 0x3fffffff;
|
|
rxDmaData =
|
|
is64bit ? (void *)&rxDesc64.link : (void *)&rxDesc32.link;
|
|
rxDmaLen = is64bit ? sizeof(rxDesc64.link) : sizeof(rxDesc32.link);
|
|
rxDmaFree = dmaDescFree;
|
|
|
|
descDmaReads++;
|
|
descDmaRdBytes += rxDmaLen;
|
|
|
|
if (doRxDmaRead())
|
|
goto exit;
|
|
} else {
|
|
rxState = rxDescRead;
|
|
|
|
rxDmaAddr = regs.rxdp & 0x3fffffff;
|
|
rxDmaData = is64bit ? (void *)&rxDesc64 : (void *)&rxDesc32;
|
|
rxDmaLen = is64bit ? sizeof(rxDesc64) : sizeof(rxDesc32);
|
|
rxDmaFree = dmaDescFree;
|
|
|
|
descDmaReads++;
|
|
descDmaRdBytes += rxDmaLen;
|
|
|
|
if (doRxDmaRead())
|
|
goto exit;
|
|
}
|
|
break;
|
|
|
|
case rxDescRefr:
|
|
if (rxDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
rxState = rxAdvance;
|
|
break;
|
|
|
|
case rxDescRead:
|
|
if (rxDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
DPRINTF(EthernetDesc, "rxDesc: addr=%08x read descriptor\n",
|
|
regs.rxdp & 0x3fffffff);
|
|
DPRINTF(EthernetDesc,
|
|
"rxDesc: link=%#x bufptr=%#x cmdsts=%08x extsts=%08x\n",
|
|
link, bufptr, cmdsts, extsts);
|
|
|
|
if (cmdsts & CMDSTS_OWN) {
|
|
devIntrPost(ISR_RXIDLE);
|
|
rxState = rxIdle;
|
|
goto exit;
|
|
} else {
|
|
rxState = rxFifoBlock;
|
|
rxFragPtr = bufptr;
|
|
rxDescCnt = cmdsts & CMDSTS_LEN_MASK;
|
|
}
|
|
break;
|
|
|
|
case rxFifoBlock:
|
|
if (!rxPacket) {
|
|
/**
|
|
* @todo in reality, we should be able to start processing
|
|
* the packet as it arrives, and not have to wait for the
|
|
* full packet ot be in the receive fifo.
|
|
*/
|
|
if (rxFifo.empty())
|
|
goto exit;
|
|
|
|
DPRINTF(EthernetSM, "****processing receive of new packet****\n");
|
|
|
|
// If we don't have a packet, grab a new one from the fifo.
|
|
rxPacket = rxFifo.front();
|
|
rxPktBytes = rxPacket->length;
|
|
rxPacketBufPtr = rxPacket->data;
|
|
|
|
#if TRACING_ON
|
|
if (DTRACE(Ethernet)) {
|
|
IpPtr ip(rxPacket);
|
|
if (ip) {
|
|
DPRINTF(Ethernet, "ID is %d\n", ip->id());
|
|
TcpPtr tcp(ip);
|
|
if (tcp) {
|
|
DPRINTF(Ethernet,
|
|
"Src Port=%d, Dest Port=%d, Seq=%d, Ack=%d\n",
|
|
tcp->sport(), tcp->dport(), tcp->seq(),
|
|
tcp->ack());
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// sanity check - i think the driver behaves like this
|
|
assert(rxDescCnt >= rxPktBytes);
|
|
rxFifo.pop();
|
|
}
|
|
|
|
|
|
// dont' need the && rxDescCnt > 0 if driver sanity check
|
|
// above holds
|
|
if (rxPktBytes > 0) {
|
|
rxState = rxFragWrite;
|
|
// don't need min<>(rxPktBytes,rxDescCnt) if above sanity
|
|
// check holds
|
|
rxXferLen = rxPktBytes;
|
|
|
|
rxDmaAddr = rxFragPtr & 0x3fffffff;
|
|
rxDmaData = rxPacketBufPtr;
|
|
rxDmaLen = rxXferLen;
|
|
rxDmaFree = dmaDataFree;
|
|
|
|
if (doRxDmaWrite())
|
|
goto exit;
|
|
|
|
} else {
|
|
rxState = rxDescWrite;
|
|
|
|
//if (rxPktBytes == 0) { /* packet is done */
|
|
assert(rxPktBytes == 0);
|
|
DPRINTF(EthernetSM, "done with receiving packet\n");
|
|
|
|
cmdsts |= CMDSTS_OWN;
|
|
cmdsts &= ~CMDSTS_MORE;
|
|
cmdsts |= CMDSTS_OK;
|
|
cmdsts &= 0xffff0000;
|
|
cmdsts += rxPacket->length; //i.e. set CMDSTS_SIZE
|
|
|
|
#if 0
|
|
/*
|
|
* all the driver uses these are for its own stats keeping
|
|
* which we don't care about, aren't necessary for
|
|
* functionality and doing this would just slow us down.
|
|
* if they end up using this in a later version for
|
|
* functional purposes, just undef
|
|
*/
|
|
if (rxFilterEnable) {
|
|
cmdsts &= ~CMDSTS_DEST_MASK;
|
|
const EthAddr &dst = rxFifoFront()->dst();
|
|
if (dst->unicast())
|
|
cmdsts |= CMDSTS_DEST_SELF;
|
|
if (dst->multicast())
|
|
cmdsts |= CMDSTS_DEST_MULTI;
|
|
if (dst->broadcast())
|
|
cmdsts |= CMDSTS_DEST_MASK;
|
|
}
|
|
#endif
|
|
|
|
IpPtr ip(rxPacket);
|
|
if (extstsEnable && ip) {
|
|
extsts |= EXTSTS_IPPKT;
|
|
rxIpChecksums++;
|
|
if (cksum(ip) != 0) {
|
|
DPRINTF(EthernetCksum, "Rx IP Checksum Error\n");
|
|
extsts |= EXTSTS_IPERR;
|
|
}
|
|
TcpPtr tcp(ip);
|
|
UdpPtr udp(ip);
|
|
if (tcp) {
|
|
extsts |= EXTSTS_TCPPKT;
|
|
rxTcpChecksums++;
|
|
if (cksum(tcp) != 0) {
|
|
DPRINTF(EthernetCksum, "Rx TCP Checksum Error\n");
|
|
extsts |= EXTSTS_TCPERR;
|
|
|
|
}
|
|
} else if (udp) {
|
|
extsts |= EXTSTS_UDPPKT;
|
|
rxUdpChecksums++;
|
|
if (cksum(udp) != 0) {
|
|
DPRINTF(EthernetCksum, "Rx UDP Checksum Error\n");
|
|
extsts |= EXTSTS_UDPERR;
|
|
}
|
|
}
|
|
}
|
|
rxPacket = 0;
|
|
|
|
/*
|
|
* the driver seems to always receive into desc buffers
|
|
* of size 1514, so you never have a pkt that is split
|
|
* into multiple descriptors on the receive side, so
|
|
* i don't implement that case, hence the assert above.
|
|
*/
|
|
|
|
DPRINTF(EthernetDesc,
|
|
"rxDesc: addr=%08x writeback cmdsts extsts\n",
|
|
regs.rxdp & 0x3fffffff);
|
|
DPRINTF(EthernetDesc,
|
|
"rxDesc: link=%#x bufptr=%#x cmdsts=%08x extsts=%08x\n",
|
|
link, bufptr, cmdsts, extsts);
|
|
|
|
rxDmaAddr = regs.rxdp & 0x3fffffff;
|
|
rxDmaData = &cmdsts;
|
|
if (is64bit) {
|
|
rxDmaAddr += offsetof(ns_desc64, cmdsts);
|
|
rxDmaLen = sizeof(rxDesc64.cmdsts) + sizeof(rxDesc64.extsts);
|
|
} else {
|
|
rxDmaAddr += offsetof(ns_desc32, cmdsts);
|
|
rxDmaLen = sizeof(rxDesc32.cmdsts) + sizeof(rxDesc32.extsts);
|
|
}
|
|
rxDmaFree = dmaDescFree;
|
|
|
|
descDmaWrites++;
|
|
descDmaWrBytes += rxDmaLen;
|
|
|
|
if (doRxDmaWrite())
|
|
goto exit;
|
|
}
|
|
break;
|
|
|
|
case rxFragWrite:
|
|
if (rxDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
rxPacketBufPtr += rxXferLen;
|
|
rxFragPtr += rxXferLen;
|
|
rxPktBytes -= rxXferLen;
|
|
|
|
rxState = rxFifoBlock;
|
|
break;
|
|
|
|
case rxDescWrite:
|
|
if (rxDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
assert(cmdsts & CMDSTS_OWN);
|
|
|
|
assert(rxPacket == 0);
|
|
devIntrPost(ISR_RXOK);
|
|
|
|
if (cmdsts & CMDSTS_INTR)
|
|
devIntrPost(ISR_RXDESC);
|
|
|
|
if (!rxEnable) {
|
|
DPRINTF(EthernetSM, "Halting the RX state machine\n");
|
|
rxState = rxIdle;
|
|
goto exit;
|
|
} else
|
|
rxState = rxAdvance;
|
|
break;
|
|
|
|
case rxAdvance:
|
|
if (link == 0) {
|
|
devIntrPost(ISR_RXIDLE);
|
|
rxState = rxIdle;
|
|
CRDD = true;
|
|
goto exit;
|
|
} else {
|
|
if (rxDmaState != dmaIdle)
|
|
goto exit;
|
|
rxState = rxDescRead;
|
|
regs.rxdp = link;
|
|
CRDD = false;
|
|
|
|
rxDmaAddr = regs.rxdp & 0x3fffffff;
|
|
rxDmaData = is64bit ? (void *)&rxDesc64 : (void *)&rxDesc32;
|
|
rxDmaLen = is64bit ? sizeof(rxDesc64) : sizeof(rxDesc32);
|
|
rxDmaFree = dmaDescFree;
|
|
|
|
if (doRxDmaRead())
|
|
goto exit;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
panic("Invalid rxState!");
|
|
}
|
|
|
|
DPRINTF(EthernetSM, "entering next rxState=%s\n",
|
|
NsRxStateStrings[rxState]);
|
|
goto next;
|
|
|
|
exit:
|
|
/**
|
|
* @todo do we want to schedule a future kick?
|
|
*/
|
|
DPRINTF(EthernetSM, "rx state machine exited rxState=%s\n",
|
|
NsRxStateStrings[rxState]);
|
|
|
|
if (clock && !rxKickEvent.scheduled())
|
|
rxKickEvent.schedule(rxKickTick);
|
|
}
|
|
|
|
void
|
|
NSGigE::transmit()
|
|
{
|
|
if (txFifo.empty()) {
|
|
DPRINTF(Ethernet, "nothing to transmit\n");
|
|
return;
|
|
}
|
|
|
|
DPRINTF(Ethernet, "Attempt Pkt Transmit: txFifo length=%d\n",
|
|
txFifo.size());
|
|
if (interface->sendPacket(txFifo.front())) {
|
|
#if TRACING_ON
|
|
if (DTRACE(Ethernet)) {
|
|
IpPtr ip(txFifo.front());
|
|
if (ip) {
|
|
DPRINTF(Ethernet, "ID is %d\n", ip->id());
|
|
TcpPtr tcp(ip);
|
|
if (tcp) {
|
|
DPRINTF(Ethernet,
|
|
"Src Port=%d, Dest Port=%d, Seq=%d, Ack=%d\n",
|
|
tcp->sport(), tcp->dport(), tcp->seq(),
|
|
tcp->ack());
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
DDUMP(EthernetData, txFifo.front()->data, txFifo.front()->length);
|
|
txBytes += txFifo.front()->length;
|
|
txPackets++;
|
|
|
|
DPRINTF(Ethernet, "Successful Xmit! now txFifoAvail is %d\n",
|
|
txFifo.avail());
|
|
txFifo.pop();
|
|
|
|
/*
|
|
* normally do a writeback of the descriptor here, and ONLY
|
|
* after that is done, send this interrupt. but since our
|
|
* stuff never actually fails, just do this interrupt here,
|
|
* otherwise the code has to stray from this nice format.
|
|
* besides, it's functionally the same.
|
|
*/
|
|
devIntrPost(ISR_TXOK);
|
|
}
|
|
|
|
if (!txFifo.empty() && !txEvent.scheduled()) {
|
|
DPRINTF(Ethernet, "reschedule transmit\n");
|
|
txEvent.schedule(curTick + retryTime);
|
|
}
|
|
}
|
|
|
|
void
|
|
NSGigE::txDmaReadCopy()
|
|
{
|
|
assert(txDmaState == dmaReading);
|
|
|
|
physmem->dma_read((uint8_t *)txDmaData, txDmaAddr, txDmaLen);
|
|
txDmaState = dmaIdle;
|
|
|
|
DPRINTF(EthernetDMA, "tx dma read paddr=%#x len=%d\n",
|
|
txDmaAddr, txDmaLen);
|
|
DDUMP(EthernetDMA, txDmaData, txDmaLen);
|
|
}
|
|
|
|
bool
|
|
NSGigE::doTxDmaRead()
|
|
{
|
|
assert(txDmaState == dmaIdle || txDmaState == dmaReadWaiting);
|
|
txDmaState = dmaReading;
|
|
|
|
if (dmaInterface && !txDmaFree) {
|
|
if (dmaInterface->busy())
|
|
txDmaState = dmaReadWaiting;
|
|
else
|
|
dmaInterface->doDMA(Read, txDmaAddr, txDmaLen, curTick,
|
|
&txDmaReadEvent, true);
|
|
return true;
|
|
}
|
|
|
|
if (dmaReadDelay == 0 && dmaReadFactor == 0.0) {
|
|
txDmaReadCopy();
|
|
return false;
|
|
}
|
|
|
|
Tick factor = ((txDmaLen + ULL(63)) >> ULL(6)) * dmaReadFactor;
|
|
Tick start = curTick + dmaReadDelay + factor;
|
|
txDmaReadEvent.schedule(start);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
NSGigE::txDmaReadDone()
|
|
{
|
|
assert(txDmaState == dmaReading);
|
|
txDmaReadCopy();
|
|
|
|
// If the receive state machine has a pending DMA, let it go first
|
|
if (rxDmaState == dmaReadWaiting || rxDmaState == dmaWriteWaiting)
|
|
rxKick();
|
|
|
|
txKick();
|
|
}
|
|
|
|
void
|
|
NSGigE::txDmaWriteCopy()
|
|
{
|
|
assert(txDmaState == dmaWriting);
|
|
|
|
physmem->dma_write(txDmaAddr, (uint8_t *)txDmaData, txDmaLen);
|
|
txDmaState = dmaIdle;
|
|
|
|
DPRINTF(EthernetDMA, "tx dma write paddr=%#x len=%d\n",
|
|
txDmaAddr, txDmaLen);
|
|
DDUMP(EthernetDMA, txDmaData, txDmaLen);
|
|
}
|
|
|
|
bool
|
|
NSGigE::doTxDmaWrite()
|
|
{
|
|
assert(txDmaState == dmaIdle || txDmaState == dmaWriteWaiting);
|
|
txDmaState = dmaWriting;
|
|
|
|
if (dmaInterface && !txDmaFree) {
|
|
if (dmaInterface->busy())
|
|
txDmaState = dmaWriteWaiting;
|
|
else
|
|
dmaInterface->doDMA(WriteInvalidate, txDmaAddr, txDmaLen, curTick,
|
|
&txDmaWriteEvent, true);
|
|
return true;
|
|
}
|
|
|
|
if (dmaWriteDelay == 0 && dmaWriteFactor == 0.0) {
|
|
txDmaWriteCopy();
|
|
return false;
|
|
}
|
|
|
|
Tick factor = ((txDmaLen + ULL(63)) >> ULL(6)) * dmaWriteFactor;
|
|
Tick start = curTick + dmaWriteDelay + factor;
|
|
txDmaWriteEvent.schedule(start);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
NSGigE::txDmaWriteDone()
|
|
{
|
|
assert(txDmaState == dmaWriting);
|
|
txDmaWriteCopy();
|
|
|
|
// If the receive state machine has a pending DMA, let it go first
|
|
if (rxDmaState == dmaReadWaiting || rxDmaState == dmaWriteWaiting)
|
|
rxKick();
|
|
|
|
txKick();
|
|
}
|
|
|
|
void
|
|
NSGigE::txKick()
|
|
{
|
|
bool is64bit = (bool)(regs.config & CFGR_M64ADDR);
|
|
|
|
DPRINTF(EthernetSM, "transmit kick txState=%s %d-bit\n",
|
|
NsTxStateStrings[txState], is64bit ? 64 : 32);
|
|
|
|
Addr link, bufptr;
|
|
uint32_t &cmdsts = is64bit ? txDesc64.cmdsts : txDesc32.cmdsts;
|
|
uint32_t &extsts = is64bit ? txDesc64.extsts : txDesc32.extsts;
|
|
|
|
next:
|
|
if (clock) {
|
|
if (txKickTick > curTick) {
|
|
DPRINTF(EthernetSM, "transmit kick exiting, can't run till %d\n",
|
|
txKickTick);
|
|
goto exit;
|
|
}
|
|
|
|
// Go to the next state machine clock tick.
|
|
txKickTick = curTick + cycles(1);
|
|
}
|
|
|
|
switch(txDmaState) {
|
|
case dmaReadWaiting:
|
|
if (doTxDmaRead())
|
|
goto exit;
|
|
break;
|
|
case dmaWriteWaiting:
|
|
if (doTxDmaWrite())
|
|
goto exit;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
link = is64bit ? (Addr)txDesc64.link : (Addr)txDesc32.link;
|
|
bufptr = is64bit ? (Addr)txDesc64.bufptr : (Addr)txDesc32.bufptr;
|
|
switch (txState) {
|
|
case txIdle:
|
|
if (!txEnable) {
|
|
DPRINTF(EthernetSM, "Transmit disabled. Nothing to do.\n");
|
|
goto exit;
|
|
}
|
|
|
|
if (CTDD) {
|
|
txState = txDescRefr;
|
|
|
|
txDmaAddr = regs.txdp & 0x3fffffff;
|
|
txDmaData =
|
|
is64bit ? (void *)&txDesc64.link : (void *)&txDesc32.link;
|
|
txDmaLen = is64bit ? sizeof(txDesc64.link) : sizeof(txDesc32.link);
|
|
txDmaFree = dmaDescFree;
|
|
|
|
descDmaReads++;
|
|
descDmaRdBytes += txDmaLen;
|
|
|
|
if (doTxDmaRead())
|
|
goto exit;
|
|
|
|
} else {
|
|
txState = txDescRead;
|
|
|
|
txDmaAddr = regs.txdp & 0x3fffffff;
|
|
txDmaData = is64bit ? (void *)&txDesc64 : (void *)&txDesc32;
|
|
txDmaLen = is64bit ? sizeof(txDesc64) : sizeof(txDesc32);
|
|
txDmaFree = dmaDescFree;
|
|
|
|
descDmaReads++;
|
|
descDmaRdBytes += txDmaLen;
|
|
|
|
if (doTxDmaRead())
|
|
goto exit;
|
|
}
|
|
break;
|
|
|
|
case txDescRefr:
|
|
if (txDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
txState = txAdvance;
|
|
break;
|
|
|
|
case txDescRead:
|
|
if (txDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
DPRINTF(EthernetDesc, "txDesc: addr=%08x read descriptor\n",
|
|
regs.txdp & 0x3fffffff);
|
|
DPRINTF(EthernetDesc,
|
|
"txDesc: link=%#x bufptr=%#x cmdsts=%#08x extsts=%#08x\n",
|
|
link, bufptr, cmdsts, extsts);
|
|
|
|
if (cmdsts & CMDSTS_OWN) {
|
|
txState = txFifoBlock;
|
|
txFragPtr = bufptr;
|
|
txDescCnt = cmdsts & CMDSTS_LEN_MASK;
|
|
} else {
|
|
devIntrPost(ISR_TXIDLE);
|
|
txState = txIdle;
|
|
goto exit;
|
|
}
|
|
break;
|
|
|
|
case txFifoBlock:
|
|
if (!txPacket) {
|
|
DPRINTF(EthernetSM, "****starting the tx of a new packet****\n");
|
|
txPacket = new PacketData(16384);
|
|
txPacketBufPtr = txPacket->data;
|
|
}
|
|
|
|
if (txDescCnt == 0) {
|
|
DPRINTF(EthernetSM, "the txDescCnt == 0, done with descriptor\n");
|
|
if (cmdsts & CMDSTS_MORE) {
|
|
DPRINTF(EthernetSM, "there are more descriptors to come\n");
|
|
txState = txDescWrite;
|
|
|
|
cmdsts &= ~CMDSTS_OWN;
|
|
|
|
txDmaAddr = regs.txdp & 0x3fffffff;
|
|
txDmaData = &cmdsts;
|
|
if (is64bit) {
|
|
txDmaAddr += offsetof(ns_desc64, cmdsts);
|
|
txDmaLen = sizeof(txDesc64.cmdsts);
|
|
} else {
|
|
txDmaAddr += offsetof(ns_desc32, cmdsts);
|
|
txDmaLen = sizeof(txDesc32.cmdsts);
|
|
}
|
|
txDmaFree = dmaDescFree;
|
|
|
|
if (doTxDmaWrite())
|
|
goto exit;
|
|
|
|
} else { /* this packet is totally done */
|
|
DPRINTF(EthernetSM, "This packet is done, let's wrap it up\n");
|
|
/* deal with the the packet that just finished */
|
|
if ((regs.vtcr & VTCR_PPCHK) && extstsEnable) {
|
|
IpPtr ip(txPacket);
|
|
if (extsts & EXTSTS_UDPPKT) {
|
|
UdpPtr udp(ip);
|
|
udp->sum(0);
|
|
udp->sum(cksum(udp));
|
|
txUdpChecksums++;
|
|
} else if (extsts & EXTSTS_TCPPKT) {
|
|
TcpPtr tcp(ip);
|
|
tcp->sum(0);
|
|
tcp->sum(cksum(tcp));
|
|
txTcpChecksums++;
|
|
}
|
|
if (extsts & EXTSTS_IPPKT) {
|
|
ip->sum(0);
|
|
ip->sum(cksum(ip));
|
|
txIpChecksums++;
|
|
}
|
|
}
|
|
|
|
txPacket->length = txPacketBufPtr - txPacket->data;
|
|
// this is just because the receive can't handle a
|
|
// packet bigger want to make sure
|
|
if (txPacket->length > 1514)
|
|
panic("transmit packet too large, %s > 1514\n",
|
|
txPacket->length);
|
|
|
|
#ifndef NDEBUG
|
|
bool success =
|
|
#endif
|
|
txFifo.push(txPacket);
|
|
assert(success);
|
|
|
|
/*
|
|
* this following section is not tqo spec, but
|
|
* functionally shouldn't be any different. normally,
|
|
* the chip will wait til the transmit has occurred
|
|
* before writing back the descriptor because it has
|
|
* to wait to see that it was successfully transmitted
|
|
* to decide whether to set CMDSTS_OK or not.
|
|
* however, in the simulator since it is always
|
|
* successfully transmitted, and writing it exactly to
|
|
* spec would complicate the code, we just do it here
|
|
*/
|
|
|
|
cmdsts &= ~CMDSTS_OWN;
|
|
cmdsts |= CMDSTS_OK;
|
|
|
|
DPRINTF(EthernetDesc,
|
|
"txDesc writeback: cmdsts=%08x extsts=%08x\n",
|
|
cmdsts, extsts);
|
|
|
|
txDmaFree = dmaDescFree;
|
|
txDmaAddr = regs.txdp & 0x3fffffff;
|
|
txDmaData = &cmdsts;
|
|
if (is64bit) {
|
|
txDmaAddr += offsetof(ns_desc64, cmdsts);
|
|
txDmaLen =
|
|
sizeof(txDesc64.cmdsts) + sizeof(txDesc64.extsts);
|
|
} else {
|
|
txDmaAddr += offsetof(ns_desc32, cmdsts);
|
|
txDmaLen =
|
|
sizeof(txDesc32.cmdsts) + sizeof(txDesc32.extsts);
|
|
}
|
|
|
|
descDmaWrites++;
|
|
descDmaWrBytes += txDmaLen;
|
|
|
|
transmit();
|
|
txPacket = 0;
|
|
|
|
if (!txEnable) {
|
|
DPRINTF(EthernetSM, "halting TX state machine\n");
|
|
txState = txIdle;
|
|
goto exit;
|
|
} else
|
|
txState = txAdvance;
|
|
|
|
if (doTxDmaWrite())
|
|
goto exit;
|
|
}
|
|
} else {
|
|
DPRINTF(EthernetSM, "this descriptor isn't done yet\n");
|
|
if (!txFifo.full()) {
|
|
txState = txFragRead;
|
|
|
|
/*
|
|
* The number of bytes transferred is either whatever
|
|
* is left in the descriptor (txDescCnt), or if there
|
|
* is not enough room in the fifo, just whatever room
|
|
* is left in the fifo
|
|
*/
|
|
txXferLen = min<uint32_t>(txDescCnt, txFifo.avail());
|
|
|
|
txDmaAddr = txFragPtr & 0x3fffffff;
|
|
txDmaData = txPacketBufPtr;
|
|
txDmaLen = txXferLen;
|
|
txDmaFree = dmaDataFree;
|
|
|
|
if (doTxDmaRead())
|
|
goto exit;
|
|
} else {
|
|
txState = txFifoBlock;
|
|
transmit();
|
|
|
|
goto exit;
|
|
}
|
|
|
|
}
|
|
break;
|
|
|
|
case txFragRead:
|
|
if (txDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
txPacketBufPtr += txXferLen;
|
|
txFragPtr += txXferLen;
|
|
txDescCnt -= txXferLen;
|
|
txFifo.reserve(txXferLen);
|
|
|
|
txState = txFifoBlock;
|
|
break;
|
|
|
|
case txDescWrite:
|
|
if (txDmaState != dmaIdle)
|
|
goto exit;
|
|
|
|
if (cmdsts & CMDSTS_INTR)
|
|
devIntrPost(ISR_TXDESC);
|
|
|
|
if (!txEnable) {
|
|
DPRINTF(EthernetSM, "halting TX state machine\n");
|
|
txState = txIdle;
|
|
goto exit;
|
|
} else
|
|
txState = txAdvance;
|
|
break;
|
|
|
|
case txAdvance:
|
|
if (link == 0) {
|
|
devIntrPost(ISR_TXIDLE);
|
|
txState = txIdle;
|
|
goto exit;
|
|
} else {
|
|
if (txDmaState != dmaIdle)
|
|
goto exit;
|
|
txState = txDescRead;
|
|
regs.txdp = link;
|
|
CTDD = false;
|
|
|
|
txDmaAddr = link & 0x3fffffff;
|
|
txDmaData = is64bit ? (void *)&txDesc64 : (void *)&txDesc32;
|
|
txDmaLen = is64bit ? sizeof(txDesc64) : sizeof(txDesc32);
|
|
txDmaFree = dmaDescFree;
|
|
|
|
if (doTxDmaRead())
|
|
goto exit;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
panic("invalid state");
|
|
}
|
|
|
|
DPRINTF(EthernetSM, "entering next txState=%s\n",
|
|
NsTxStateStrings[txState]);
|
|
goto next;
|
|
|
|
exit:
|
|
/**
|
|
* @todo do we want to schedule a future kick?
|
|
*/
|
|
DPRINTF(EthernetSM, "tx state machine exited txState=%s\n",
|
|
NsTxStateStrings[txState]);
|
|
|
|
if (clock && !txKickEvent.scheduled())
|
|
txKickEvent.schedule(txKickTick);
|
|
}
|
|
|
|
/**
|
|
* Advance the EEPROM state machine
|
|
* Called on rising edge of EEPROM clock bit in MEAR
|
|
*/
|
|
void
|
|
NSGigE::eepromKick()
|
|
{
|
|
switch (eepromState) {
|
|
|
|
case eepromStart:
|
|
|
|
// Wait for start bit
|
|
if (regs.mear & MEAR_EEDI) {
|
|
// Set up to get 2 opcode bits
|
|
eepromState = eepromGetOpcode;
|
|
eepromBitsToRx = 2;
|
|
eepromOpcode = 0;
|
|
}
|
|
break;
|
|
|
|
case eepromGetOpcode:
|
|
eepromOpcode <<= 1;
|
|
eepromOpcode += (regs.mear & MEAR_EEDI) ? 1 : 0;
|
|
--eepromBitsToRx;
|
|
|
|
// Done getting opcode
|
|
if (eepromBitsToRx == 0) {
|
|
if (eepromOpcode != EEPROM_READ)
|
|
panic("only EEPROM reads are implemented!");
|
|
|
|
// Set up to get address
|
|
eepromState = eepromGetAddress;
|
|
eepromBitsToRx = 6;
|
|
eepromAddress = 0;
|
|
}
|
|
break;
|
|
|
|
case eepromGetAddress:
|
|
eepromAddress <<= 1;
|
|
eepromAddress += (regs.mear & MEAR_EEDI) ? 1 : 0;
|
|
--eepromBitsToRx;
|
|
|
|
// Done getting address
|
|
if (eepromBitsToRx == 0) {
|
|
|
|
if (eepromAddress >= EEPROM_SIZE)
|
|
panic("EEPROM read access out of range!");
|
|
|
|
switch (eepromAddress) {
|
|
|
|
case EEPROM_PMATCH2_ADDR:
|
|
eepromData = rom.perfectMatch[5];
|
|
eepromData <<= 8;
|
|
eepromData += rom.perfectMatch[4];
|
|
break;
|
|
|
|
case EEPROM_PMATCH1_ADDR:
|
|
eepromData = rom.perfectMatch[3];
|
|
eepromData <<= 8;
|
|
eepromData += rom.perfectMatch[2];
|
|
break;
|
|
|
|
case EEPROM_PMATCH0_ADDR:
|
|
eepromData = rom.perfectMatch[1];
|
|
eepromData <<= 8;
|
|
eepromData += rom.perfectMatch[0];
|
|
break;
|
|
|
|
default:
|
|
panic("FreeBSD driver only uses EEPROM to read PMATCH!");
|
|
}
|
|
// Set up to read data
|
|
eepromState = eepromRead;
|
|
eepromBitsToRx = 16;
|
|
|
|
// Clear data in bit
|
|
regs.mear &= ~MEAR_EEDI;
|
|
}
|
|
break;
|
|
|
|
case eepromRead:
|
|
// Clear Data Out bit
|
|
regs.mear &= ~MEAR_EEDO;
|
|
// Set bit to value of current EEPROM bit
|
|
regs.mear |= (eepromData & 0x8000) ? MEAR_EEDO : 0x0;
|
|
|
|
eepromData <<= 1;
|
|
--eepromBitsToRx;
|
|
|
|
// All done
|
|
if (eepromBitsToRx == 0) {
|
|
eepromState = eepromStart;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
panic("invalid EEPROM state");
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
NSGigE::transferDone()
|
|
{
|
|
if (txFifo.empty()) {
|
|
DPRINTF(Ethernet, "transfer complete: txFifo empty...nothing to do\n");
|
|
return;
|
|
}
|
|
|
|
DPRINTF(Ethernet, "transfer complete: data in txFifo...schedule xmit\n");
|
|
|
|
if (txEvent.scheduled())
|
|
txEvent.reschedule(curTick + cycles(1));
|
|
else
|
|
txEvent.schedule(curTick + cycles(1));
|
|
}
|
|
|
|
bool
|
|
NSGigE::rxFilter(const PacketPtr &packet)
|
|
{
|
|
EthPtr eth = packet;
|
|
bool drop = true;
|
|
string type;
|
|
|
|
const EthAddr &dst = eth->dst();
|
|
if (dst.unicast()) {
|
|
// If we're accepting all unicast addresses
|
|
if (acceptUnicast)
|
|
drop = false;
|
|
|
|
// If we make a perfect match
|
|
if (acceptPerfect && dst == rom.perfectMatch)
|
|
drop = false;
|
|
|
|
if (acceptArp && eth->type() == ETH_TYPE_ARP)
|
|
drop = false;
|
|
|
|
} else if (dst.broadcast()) {
|
|
// if we're accepting broadcasts
|
|
if (acceptBroadcast)
|
|
drop = false;
|
|
|
|
} else if (dst.multicast()) {
|
|
// if we're accepting all multicasts
|
|
if (acceptMulticast)
|
|
drop = false;
|
|
|
|
// Multicast hashing faked - all packets accepted
|
|
if (multicastHashEnable)
|
|
drop = false;
|
|
}
|
|
|
|
if (drop) {
|
|
DPRINTF(Ethernet, "rxFilter drop\n");
|
|
DDUMP(EthernetData, packet->data, packet->length);
|
|
}
|
|
|
|
return drop;
|
|
}
|
|
|
|
bool
|
|
NSGigE::recvPacket(PacketPtr packet)
|
|
{
|
|
rxBytes += packet->length;
|
|
rxPackets++;
|
|
|
|
DPRINTF(Ethernet, "Receiving packet from wire, rxFifoAvail=%d\n",
|
|
rxFifo.avail());
|
|
|
|
if (!rxEnable) {
|
|
DPRINTF(Ethernet, "receive disabled...packet dropped\n");
|
|
return true;
|
|
}
|
|
|
|
if (!rxFilterEnable) {
|
|
DPRINTF(Ethernet,
|
|
"receive packet filtering disabled . . . packet dropped\n");
|
|
return true;
|
|
}
|
|
|
|
if (rxFilter(packet)) {
|
|
DPRINTF(Ethernet, "packet filtered...dropped\n");
|
|
return true;
|
|
}
|
|
|
|
if (rxFifo.avail() < packet->length) {
|
|
#if TRACING_ON
|
|
IpPtr ip(packet);
|
|
TcpPtr tcp(ip);
|
|
if (ip) {
|
|
DPRINTF(Ethernet,
|
|
"packet won't fit in receive buffer...pkt ID %d dropped\n",
|
|
ip->id());
|
|
if (tcp) {
|
|
DPRINTF(Ethernet, "Seq=%d\n", tcp->seq());
|
|
}
|
|
}
|
|
#endif
|
|
droppedPackets++;
|
|
devIntrPost(ISR_RXORN);
|
|
return false;
|
|
}
|
|
|
|
rxFifo.push(packet);
|
|
|
|
rxKick();
|
|
return true;
|
|
}
|
|
|
|
//=====================================================================
|
|
//
|
|
//
|
|
void
|
|
NSGigE::serialize(ostream &os)
|
|
{
|
|
// Serialize the PciDev base class
|
|
PciDev::serialize(os);
|
|
|
|
/*
|
|
* Finalize any DMA events now.
|
|
*/
|
|
if (rxDmaReadEvent.scheduled())
|
|
rxDmaReadCopy();
|
|
if (rxDmaWriteEvent.scheduled())
|
|
rxDmaWriteCopy();
|
|
if (txDmaReadEvent.scheduled())
|
|
txDmaReadCopy();
|
|
if (txDmaWriteEvent.scheduled())
|
|
txDmaWriteCopy();
|
|
|
|
/*
|
|
* Serialize the device registers
|
|
*/
|
|
SERIALIZE_SCALAR(regs.command);
|
|
SERIALIZE_SCALAR(regs.config);
|
|
SERIALIZE_SCALAR(regs.mear);
|
|
SERIALIZE_SCALAR(regs.ptscr);
|
|
SERIALIZE_SCALAR(regs.isr);
|
|
SERIALIZE_SCALAR(regs.imr);
|
|
SERIALIZE_SCALAR(regs.ier);
|
|
SERIALIZE_SCALAR(regs.ihr);
|
|
SERIALIZE_SCALAR(regs.txdp);
|
|
SERIALIZE_SCALAR(regs.txdp_hi);
|
|
SERIALIZE_SCALAR(regs.txcfg);
|
|
SERIALIZE_SCALAR(regs.gpior);
|
|
SERIALIZE_SCALAR(regs.rxdp);
|
|
SERIALIZE_SCALAR(regs.rxdp_hi);
|
|
SERIALIZE_SCALAR(regs.rxcfg);
|
|
SERIALIZE_SCALAR(regs.pqcr);
|
|
SERIALIZE_SCALAR(regs.wcsr);
|
|
SERIALIZE_SCALAR(regs.pcr);
|
|
SERIALIZE_SCALAR(regs.rfcr);
|
|
SERIALIZE_SCALAR(regs.rfdr);
|
|
SERIALIZE_SCALAR(regs.brar);
|
|
SERIALIZE_SCALAR(regs.brdr);
|
|
SERIALIZE_SCALAR(regs.srr);
|
|
SERIALIZE_SCALAR(regs.mibc);
|
|
SERIALIZE_SCALAR(regs.vrcr);
|
|
SERIALIZE_SCALAR(regs.vtcr);
|
|
SERIALIZE_SCALAR(regs.vdr);
|
|
SERIALIZE_SCALAR(regs.ccsr);
|
|
SERIALIZE_SCALAR(regs.tbicr);
|
|
SERIALIZE_SCALAR(regs.tbisr);
|
|
SERIALIZE_SCALAR(regs.tanar);
|
|
SERIALIZE_SCALAR(regs.tanlpar);
|
|
SERIALIZE_SCALAR(regs.taner);
|
|
SERIALIZE_SCALAR(regs.tesr);
|
|
|
|
SERIALIZE_ARRAY(rom.perfectMatch, ETH_ADDR_LEN);
|
|
SERIALIZE_ARRAY(rom.filterHash, FHASH_SIZE);
|
|
|
|
SERIALIZE_SCALAR(ioEnable);
|
|
|
|
/*
|
|
* Serialize the data Fifos
|
|
*/
|
|
rxFifo.serialize("rxFifo", os);
|
|
txFifo.serialize("txFifo", os);
|
|
|
|
/*
|
|
* Serialize the various helper variables
|
|
*/
|
|
bool txPacketExists = txPacket;
|
|
SERIALIZE_SCALAR(txPacketExists);
|
|
if (txPacketExists) {
|
|
txPacket->length = txPacketBufPtr - txPacket->data;
|
|
txPacket->serialize("txPacket", os);
|
|
uint32_t txPktBufPtr = (uint32_t) (txPacketBufPtr - txPacket->data);
|
|
SERIALIZE_SCALAR(txPktBufPtr);
|
|
}
|
|
|
|
bool rxPacketExists = rxPacket;
|
|
SERIALIZE_SCALAR(rxPacketExists);
|
|
if (rxPacketExists) {
|
|
rxPacket->serialize("rxPacket", os);
|
|
uint32_t rxPktBufPtr = (uint32_t) (rxPacketBufPtr - rxPacket->data);
|
|
SERIALIZE_SCALAR(rxPktBufPtr);
|
|
}
|
|
|
|
SERIALIZE_SCALAR(txXferLen);
|
|
SERIALIZE_SCALAR(rxXferLen);
|
|
|
|
/*
|
|
* Serialize Cached Descriptors
|
|
*/
|
|
SERIALIZE_SCALAR(rxDesc64.link);
|
|
SERIALIZE_SCALAR(rxDesc64.bufptr);
|
|
SERIALIZE_SCALAR(rxDesc64.cmdsts);
|
|
SERIALIZE_SCALAR(rxDesc64.extsts);
|
|
SERIALIZE_SCALAR(txDesc64.link);
|
|
SERIALIZE_SCALAR(txDesc64.bufptr);
|
|
SERIALIZE_SCALAR(txDesc64.cmdsts);
|
|
SERIALIZE_SCALAR(txDesc64.extsts);
|
|
SERIALIZE_SCALAR(rxDesc32.link);
|
|
SERIALIZE_SCALAR(rxDesc32.bufptr);
|
|
SERIALIZE_SCALAR(rxDesc32.cmdsts);
|
|
SERIALIZE_SCALAR(rxDesc32.extsts);
|
|
SERIALIZE_SCALAR(txDesc32.link);
|
|
SERIALIZE_SCALAR(txDesc32.bufptr);
|
|
SERIALIZE_SCALAR(txDesc32.cmdsts);
|
|
SERIALIZE_SCALAR(txDesc32.extsts);
|
|
SERIALIZE_SCALAR(extstsEnable);
|
|
|
|
/*
|
|
* Serialize tx state machine
|
|
*/
|
|
int txState = this->txState;
|
|
SERIALIZE_SCALAR(txState);
|
|
SERIALIZE_SCALAR(txEnable);
|
|
SERIALIZE_SCALAR(CTDD);
|
|
SERIALIZE_SCALAR(txFragPtr);
|
|
SERIALIZE_SCALAR(txDescCnt);
|
|
int txDmaState = this->txDmaState;
|
|
SERIALIZE_SCALAR(txDmaState);
|
|
SERIALIZE_SCALAR(txKickTick);
|
|
|
|
/*
|
|
* Serialize rx state machine
|
|
*/
|
|
int rxState = this->rxState;
|
|
SERIALIZE_SCALAR(rxState);
|
|
SERIALIZE_SCALAR(rxEnable);
|
|
SERIALIZE_SCALAR(CRDD);
|
|
SERIALIZE_SCALAR(rxPktBytes);
|
|
SERIALIZE_SCALAR(rxFragPtr);
|
|
SERIALIZE_SCALAR(rxDescCnt);
|
|
int rxDmaState = this->rxDmaState;
|
|
SERIALIZE_SCALAR(rxDmaState);
|
|
SERIALIZE_SCALAR(rxKickTick);
|
|
|
|
/*
|
|
* Serialize EEPROM state machine
|
|
*/
|
|
int eepromState = this->eepromState;
|
|
SERIALIZE_SCALAR(eepromState);
|
|
SERIALIZE_SCALAR(eepromClk);
|
|
SERIALIZE_SCALAR(eepromBitsToRx);
|
|
SERIALIZE_SCALAR(eepromOpcode);
|
|
SERIALIZE_SCALAR(eepromAddress);
|
|
SERIALIZE_SCALAR(eepromData);
|
|
|
|
/*
|
|
* If there's a pending transmit, store the time so we can
|
|
* reschedule it later
|
|
*/
|
|
Tick transmitTick = txEvent.scheduled() ? txEvent.when() - curTick : 0;
|
|
SERIALIZE_SCALAR(transmitTick);
|
|
|
|
/*
|
|
* receive address filter settings
|
|
*/
|
|
SERIALIZE_SCALAR(rxFilterEnable);
|
|
SERIALIZE_SCALAR(acceptBroadcast);
|
|
SERIALIZE_SCALAR(acceptMulticast);
|
|
SERIALIZE_SCALAR(acceptUnicast);
|
|
SERIALIZE_SCALAR(acceptPerfect);
|
|
SERIALIZE_SCALAR(acceptArp);
|
|
SERIALIZE_SCALAR(multicastHashEnable);
|
|
|
|
/*
|
|
* Keep track of pending interrupt status.
|
|
*/
|
|
SERIALIZE_SCALAR(intrTick);
|
|
SERIALIZE_SCALAR(cpuPendingIntr);
|
|
Tick intrEventTick = 0;
|
|
if (intrEvent)
|
|
intrEventTick = intrEvent->when();
|
|
SERIALIZE_SCALAR(intrEventTick);
|
|
|
|
}
|
|
|
|
void
|
|
NSGigE::unserialize(Checkpoint *cp, const std::string §ion)
|
|
{
|
|
// Unserialize the PciDev base class
|
|
PciDev::unserialize(cp, section);
|
|
|
|
UNSERIALIZE_SCALAR(regs.command);
|
|
UNSERIALIZE_SCALAR(regs.config);
|
|
UNSERIALIZE_SCALAR(regs.mear);
|
|
UNSERIALIZE_SCALAR(regs.ptscr);
|
|
UNSERIALIZE_SCALAR(regs.isr);
|
|
UNSERIALIZE_SCALAR(regs.imr);
|
|
UNSERIALIZE_SCALAR(regs.ier);
|
|
UNSERIALIZE_SCALAR(regs.ihr);
|
|
UNSERIALIZE_SCALAR(regs.txdp);
|
|
UNSERIALIZE_SCALAR(regs.txdp_hi);
|
|
UNSERIALIZE_SCALAR(regs.txcfg);
|
|
UNSERIALIZE_SCALAR(regs.gpior);
|
|
UNSERIALIZE_SCALAR(regs.rxdp);
|
|
UNSERIALIZE_SCALAR(regs.rxdp_hi);
|
|
UNSERIALIZE_SCALAR(regs.rxcfg);
|
|
UNSERIALIZE_SCALAR(regs.pqcr);
|
|
UNSERIALIZE_SCALAR(regs.wcsr);
|
|
UNSERIALIZE_SCALAR(regs.pcr);
|
|
UNSERIALIZE_SCALAR(regs.rfcr);
|
|
UNSERIALIZE_SCALAR(regs.rfdr);
|
|
UNSERIALIZE_SCALAR(regs.brar);
|
|
UNSERIALIZE_SCALAR(regs.brdr);
|
|
UNSERIALIZE_SCALAR(regs.srr);
|
|
UNSERIALIZE_SCALAR(regs.mibc);
|
|
UNSERIALIZE_SCALAR(regs.vrcr);
|
|
UNSERIALIZE_SCALAR(regs.vtcr);
|
|
UNSERIALIZE_SCALAR(regs.vdr);
|
|
UNSERIALIZE_SCALAR(regs.ccsr);
|
|
UNSERIALIZE_SCALAR(regs.tbicr);
|
|
UNSERIALIZE_SCALAR(regs.tbisr);
|
|
UNSERIALIZE_SCALAR(regs.tanar);
|
|
UNSERIALIZE_SCALAR(regs.tanlpar);
|
|
UNSERIALIZE_SCALAR(regs.taner);
|
|
UNSERIALIZE_SCALAR(regs.tesr);
|
|
|
|
UNSERIALIZE_ARRAY(rom.perfectMatch, ETH_ADDR_LEN);
|
|
UNSERIALIZE_ARRAY(rom.filterHash, FHASH_SIZE);
|
|
|
|
UNSERIALIZE_SCALAR(ioEnable);
|
|
|
|
/*
|
|
* unserialize the data fifos
|
|
*/
|
|
rxFifo.unserialize("rxFifo", cp, section);
|
|
txFifo.unserialize("txFifo", cp, section);
|
|
|
|
/*
|
|
* unserialize the various helper variables
|
|
*/
|
|
bool txPacketExists;
|
|
UNSERIALIZE_SCALAR(txPacketExists);
|
|
if (txPacketExists) {
|
|
txPacket = new PacketData(16384);
|
|
txPacket->unserialize("txPacket", cp, section);
|
|
uint32_t txPktBufPtr;
|
|
UNSERIALIZE_SCALAR(txPktBufPtr);
|
|
txPacketBufPtr = (uint8_t *) txPacket->data + txPktBufPtr;
|
|
} else
|
|
txPacket = 0;
|
|
|
|
bool rxPacketExists;
|
|
UNSERIALIZE_SCALAR(rxPacketExists);
|
|
rxPacket = 0;
|
|
if (rxPacketExists) {
|
|
rxPacket = new PacketData(16384);
|
|
rxPacket->unserialize("rxPacket", cp, section);
|
|
uint32_t rxPktBufPtr;
|
|
UNSERIALIZE_SCALAR(rxPktBufPtr);
|
|
rxPacketBufPtr = (uint8_t *) rxPacket->data + rxPktBufPtr;
|
|
} else
|
|
rxPacket = 0;
|
|
|
|
UNSERIALIZE_SCALAR(txXferLen);
|
|
UNSERIALIZE_SCALAR(rxXferLen);
|
|
|
|
/*
|
|
* Unserialize Cached Descriptors
|
|
*/
|
|
UNSERIALIZE_SCALAR(rxDesc64.link);
|
|
UNSERIALIZE_SCALAR(rxDesc64.bufptr);
|
|
UNSERIALIZE_SCALAR(rxDesc64.cmdsts);
|
|
UNSERIALIZE_SCALAR(rxDesc64.extsts);
|
|
UNSERIALIZE_SCALAR(txDesc64.link);
|
|
UNSERIALIZE_SCALAR(txDesc64.bufptr);
|
|
UNSERIALIZE_SCALAR(txDesc64.cmdsts);
|
|
UNSERIALIZE_SCALAR(txDesc64.extsts);
|
|
UNSERIALIZE_SCALAR(rxDesc32.link);
|
|
UNSERIALIZE_SCALAR(rxDesc32.bufptr);
|
|
UNSERIALIZE_SCALAR(rxDesc32.cmdsts);
|
|
UNSERIALIZE_SCALAR(rxDesc32.extsts);
|
|
UNSERIALIZE_SCALAR(txDesc32.link);
|
|
UNSERIALIZE_SCALAR(txDesc32.bufptr);
|
|
UNSERIALIZE_SCALAR(txDesc32.cmdsts);
|
|
UNSERIALIZE_SCALAR(txDesc32.extsts);
|
|
UNSERIALIZE_SCALAR(extstsEnable);
|
|
|
|
/*
|
|
* unserialize tx state machine
|
|
*/
|
|
int txState;
|
|
UNSERIALIZE_SCALAR(txState);
|
|
this->txState = (TxState) txState;
|
|
UNSERIALIZE_SCALAR(txEnable);
|
|
UNSERIALIZE_SCALAR(CTDD);
|
|
UNSERIALIZE_SCALAR(txFragPtr);
|
|
UNSERIALIZE_SCALAR(txDescCnt);
|
|
int txDmaState;
|
|
UNSERIALIZE_SCALAR(txDmaState);
|
|
this->txDmaState = (DmaState) txDmaState;
|
|
UNSERIALIZE_SCALAR(txKickTick);
|
|
if (txKickTick)
|
|
txKickEvent.schedule(txKickTick);
|
|
|
|
/*
|
|
* unserialize rx state machine
|
|
*/
|
|
int rxState;
|
|
UNSERIALIZE_SCALAR(rxState);
|
|
this->rxState = (RxState) rxState;
|
|
UNSERIALIZE_SCALAR(rxEnable);
|
|
UNSERIALIZE_SCALAR(CRDD);
|
|
UNSERIALIZE_SCALAR(rxPktBytes);
|
|
UNSERIALIZE_SCALAR(rxFragPtr);
|
|
UNSERIALIZE_SCALAR(rxDescCnt);
|
|
int rxDmaState;
|
|
UNSERIALIZE_SCALAR(rxDmaState);
|
|
this->rxDmaState = (DmaState) rxDmaState;
|
|
UNSERIALIZE_SCALAR(rxKickTick);
|
|
if (rxKickTick)
|
|
rxKickEvent.schedule(rxKickTick);
|
|
|
|
/*
|
|
* Unserialize EEPROM state machine
|
|
*/
|
|
int eepromState;
|
|
UNSERIALIZE_SCALAR(eepromState);
|
|
this->eepromState = (EEPROMState) eepromState;
|
|
UNSERIALIZE_SCALAR(eepromClk);
|
|
UNSERIALIZE_SCALAR(eepromBitsToRx);
|
|
UNSERIALIZE_SCALAR(eepromOpcode);
|
|
UNSERIALIZE_SCALAR(eepromAddress);
|
|
UNSERIALIZE_SCALAR(eepromData);
|
|
|
|
/*
|
|
* If there's a pending transmit, reschedule it now
|
|
*/
|
|
Tick transmitTick;
|
|
UNSERIALIZE_SCALAR(transmitTick);
|
|
if (transmitTick)
|
|
txEvent.schedule(curTick + transmitTick);
|
|
|
|
/*
|
|
* unserialize receive address filter settings
|
|
*/
|
|
UNSERIALIZE_SCALAR(rxFilterEnable);
|
|
UNSERIALIZE_SCALAR(acceptBroadcast);
|
|
UNSERIALIZE_SCALAR(acceptMulticast);
|
|
UNSERIALIZE_SCALAR(acceptUnicast);
|
|
UNSERIALIZE_SCALAR(acceptPerfect);
|
|
UNSERIALIZE_SCALAR(acceptArp);
|
|
UNSERIALIZE_SCALAR(multicastHashEnable);
|
|
|
|
/*
|
|
* Keep track of pending interrupt status.
|
|
*/
|
|
UNSERIALIZE_SCALAR(intrTick);
|
|
UNSERIALIZE_SCALAR(cpuPendingIntr);
|
|
Tick intrEventTick;
|
|
UNSERIALIZE_SCALAR(intrEventTick);
|
|
if (intrEventTick) {
|
|
intrEvent = new IntrEvent(this, true);
|
|
intrEvent->schedule(intrEventTick);
|
|
}
|
|
|
|
/*
|
|
* re-add addrRanges to bus bridges
|
|
*/
|
|
if (pioInterface) {
|
|
pioInterface->addAddrRange(RangeSize(BARAddrs[0], BARSize[0]));
|
|
pioInterface->addAddrRange(RangeSize(BARAddrs[1], BARSize[1]));
|
|
}
|
|
}
|
|
|
|
Tick
|
|
NSGigE::cacheAccess(MemReqPtr &req)
|
|
{
|
|
DPRINTF(EthernetPIO, "timing access to paddr=%#x (daddr=%#x)\n",
|
|
req->paddr, req->paddr & 0xfff);
|
|
|
|
return curTick + pioLatency;
|
|
}
|
|
|
|
BEGIN_DECLARE_SIM_OBJECT_PARAMS(NSGigEInt)
|
|
|
|
SimObjectParam<EtherInt *> peer;
|
|
SimObjectParam<NSGigE *> device;
|
|
|
|
END_DECLARE_SIM_OBJECT_PARAMS(NSGigEInt)
|
|
|
|
BEGIN_INIT_SIM_OBJECT_PARAMS(NSGigEInt)
|
|
|
|
INIT_PARAM_DFLT(peer, "peer interface", NULL),
|
|
INIT_PARAM(device, "Ethernet device of this interface")
|
|
|
|
END_INIT_SIM_OBJECT_PARAMS(NSGigEInt)
|
|
|
|
CREATE_SIM_OBJECT(NSGigEInt)
|
|
{
|
|
NSGigEInt *dev_int = new NSGigEInt(getInstanceName(), device);
|
|
|
|
EtherInt *p = (EtherInt *)peer;
|
|
if (p) {
|
|
dev_int->setPeer(p);
|
|
p->setPeer(dev_int);
|
|
}
|
|
|
|
return dev_int;
|
|
}
|
|
|
|
REGISTER_SIM_OBJECT("NSGigEInt", NSGigEInt)
|
|
|
|
|
|
BEGIN_DECLARE_SIM_OBJECT_PARAMS(NSGigE)
|
|
|
|
Param<Tick> clock;
|
|
|
|
Param<Addr> addr;
|
|
SimObjectParam<MemoryController *> mmu;
|
|
SimObjectParam<PhysicalMemory *> physmem;
|
|
SimObjectParam<PciConfigAll *> configspace;
|
|
SimObjectParam<PciConfigData *> configdata;
|
|
SimObjectParam<Platform *> platform;
|
|
Param<uint32_t> pci_bus;
|
|
Param<uint32_t> pci_dev;
|
|
Param<uint32_t> pci_func;
|
|
|
|
SimObjectParam<HierParams *> hier;
|
|
SimObjectParam<Bus*> pio_bus;
|
|
SimObjectParam<Bus*> dma_bus;
|
|
SimObjectParam<Bus*> payload_bus;
|
|
Param<bool> dma_desc_free;
|
|
Param<bool> dma_data_free;
|
|
Param<Tick> dma_read_delay;
|
|
Param<Tick> dma_write_delay;
|
|
Param<Tick> dma_read_factor;
|
|
Param<Tick> dma_write_factor;
|
|
Param<bool> dma_no_allocate;
|
|
Param<Tick> pio_latency;
|
|
Param<Tick> intr_delay;
|
|
|
|
Param<Tick> rx_delay;
|
|
Param<Tick> tx_delay;
|
|
Param<uint32_t> rx_fifo_size;
|
|
Param<uint32_t> tx_fifo_size;
|
|
|
|
Param<bool> rx_filter;
|
|
Param<string> hardware_address;
|
|
Param<bool> rx_thread;
|
|
Param<bool> tx_thread;
|
|
Param<bool> rss;
|
|
|
|
END_DECLARE_SIM_OBJECT_PARAMS(NSGigE)
|
|
|
|
BEGIN_INIT_SIM_OBJECT_PARAMS(NSGigE)
|
|
|
|
INIT_PARAM(clock, "State machine processor frequency"),
|
|
|
|
INIT_PARAM(addr, "Device Address"),
|
|
INIT_PARAM(mmu, "Memory Controller"),
|
|
INIT_PARAM(physmem, "Physical Memory"),
|
|
INIT_PARAM(configspace, "PCI Configspace"),
|
|
INIT_PARAM(configdata, "PCI Config data"),
|
|
INIT_PARAM(platform, "Platform"),
|
|
INIT_PARAM(pci_bus, "PCI bus"),
|
|
INIT_PARAM(pci_dev, "PCI device number"),
|
|
INIT_PARAM(pci_func, "PCI function code"),
|
|
|
|
INIT_PARAM(hier, "Hierarchy global variables"),
|
|
INIT_PARAM(pio_bus, ""),
|
|
INIT_PARAM(dma_bus, ""),
|
|
INIT_PARAM(payload_bus, "The IO Bus to attach to for payload"),
|
|
INIT_PARAM(dma_desc_free, "DMA of Descriptors is free"),
|
|
INIT_PARAM(dma_data_free, "DMA of Data is free"),
|
|
INIT_PARAM(dma_read_delay, "fixed delay for dma reads"),
|
|
INIT_PARAM(dma_write_delay, "fixed delay for dma writes"),
|
|
INIT_PARAM(dma_read_factor, "multiplier for dma reads"),
|
|
INIT_PARAM(dma_write_factor, "multiplier for dma writes"),
|
|
INIT_PARAM(dma_no_allocate, "Should DMA reads allocate cache lines"),
|
|
INIT_PARAM(pio_latency, "Programmed IO latency in bus cycles"),
|
|
INIT_PARAM(intr_delay, "Interrupt Delay in microseconds"),
|
|
|
|
INIT_PARAM(rx_delay, "Receive Delay"),
|
|
INIT_PARAM(tx_delay, "Transmit Delay"),
|
|
INIT_PARAM(rx_fifo_size, "max size in bytes of rxFifo"),
|
|
INIT_PARAM(tx_fifo_size, "max size in bytes of txFifo"),
|
|
|
|
INIT_PARAM(rx_filter, "Enable Receive Filter"),
|
|
INIT_PARAM(hardware_address, "Ethernet Hardware Address"),
|
|
INIT_PARAM(rx_thread, ""),
|
|
INIT_PARAM(tx_thread, ""),
|
|
INIT_PARAM(rss, "")
|
|
|
|
END_INIT_SIM_OBJECT_PARAMS(NSGigE)
|
|
|
|
|
|
CREATE_SIM_OBJECT(NSGigE)
|
|
{
|
|
NSGigE::Params *params = new NSGigE::Params;
|
|
|
|
params->name = getInstanceName();
|
|
|
|
params->clock = clock;
|
|
|
|
params->mmu = mmu;
|
|
params->pmem = physmem;
|
|
params->configSpace = configspace;
|
|
params->configData = configdata;
|
|
params->plat = platform;
|
|
params->busNum = pci_bus;
|
|
params->deviceNum = pci_dev;
|
|
params->functionNum = pci_func;
|
|
|
|
params->hier = hier;
|
|
params->pio_bus = pio_bus;
|
|
params->header_bus = dma_bus;
|
|
params->payload_bus = payload_bus;
|
|
params->dma_desc_free = dma_desc_free;
|
|
params->dma_data_free = dma_data_free;
|
|
params->dma_read_delay = dma_read_delay;
|
|
params->dma_write_delay = dma_write_delay;
|
|
params->dma_read_factor = dma_read_factor;
|
|
params->dma_write_factor = dma_write_factor;
|
|
params->dma_no_allocate = dma_no_allocate;
|
|
params->pio_latency = pio_latency;
|
|
params->intr_delay = intr_delay;
|
|
|
|
params->rx_delay = rx_delay;
|
|
params->tx_delay = tx_delay;
|
|
params->rx_fifo_size = rx_fifo_size;
|
|
params->tx_fifo_size = tx_fifo_size;
|
|
|
|
params->rx_filter = rx_filter;
|
|
params->eaddr = hardware_address;
|
|
params->rx_thread = rx_thread;
|
|
params->tx_thread = tx_thread;
|
|
params->rss = rss;
|
|
|
|
return new NSGigE(params);
|
|
}
|
|
|
|
REGISTER_SIM_OBJECT("NSGigE", NSGigE)
|