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gem5/dev/ns_gige.cc
Nathan Binkert b881408ed7 Clean up the Range class and associated usages. The code was 
never clear about whether the end of the range was inclusive
or exclusive.  Make it inclusive, but also provide a RangeSize()
function that will generate a Range based on a start and a size.
This, in combination with using the comparison operators, makes
almost all usages of the range not care how it is stored.

base/range.cc:
    Make the end of the range inclusive.

    start/end -> first/last
    (end seems too much like end() in stl)
base/range.hh:
    Make the end of the range inclusive.

    Fix all comparison operators so that they work correctly with
    an inclusive range.  Also, when comparing one range to another
    with <, <=, >, >=, we only look at the beginning of the range
    beacuse x <= y should be the same as x < y || x == y.  (This wasn't
    the case before.)

    Add a few functions for making a range:
    RangeSize is start and size
    RangeEx is start and end where end is exclusive
    RangeIn is start and end where end is inclusive

    start/end -> first/last
    (end seems too much like end() in stl)
dev/alpha_console.cc:
dev/baddev.cc:
dev/ide_ctrl.cc:
dev/ns_gige.cc:
dev/pciconfigall.cc:
dev/pcidev.cc:
dev/tsunami_cchip.cc:
dev/tsunami_io.cc:
dev/tsunami_pchip.cc:
dev/uart.cc:
    Use the RangeSize function to create a range.

--HG--
extra : convert_revision : 29a7eb7fce745680f1c77fefff456c2144bc3994
2004-10-22 01:34:40 -04:00

2534 lines
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/*
* Copyright (c) 2004 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* @file
* Device module for modelling the National Semiconductor
* DP83820 ethernet controller. Does not support priority queueing
*/
#include <cstdio>
#include <deque>
#include <string>
#include "base/inet.hh"
#include "cpu/exec_context.hh"
#include "cpu/intr_control.hh"
#include "dev/dma.hh"
#include "dev/etherlink.hh"
#include "dev/ns_gige.hh"
#include "dev/pciconfigall.hh"
#include "dev/tsunami_cchip.hh"
#include "mem/bus/bus.hh"
#include "mem/bus/dma_interface.hh"
#include "mem/bus/pio_interface.hh"
#include "mem/bus/pio_interface_impl.hh"
#include "mem/functional_mem/memory_control.hh"
#include "mem/functional_mem/physical_memory.hh"
#include "sim/builder.hh"
#include "sim/debug.hh"
#include "sim/host.hh"
#include "sim/sim_stats.hh"
#include "targetarch/vtophys.hh"
const char *NsRxStateStrings[] =
{
"rxIdle",
"rxDescRefr",
"rxDescRead",
"rxFifoBlock",
"rxFragWrite",
"rxDescWrite",
"rxAdvance"
};
const char *NsTxStateStrings[] =
{
"txIdle",
"txDescRefr",
"txDescRead",
"txFifoBlock",
"txFragRead",
"txDescWrite",
"txAdvance"
};
const char *NsDmaState[] =
{
"dmaIdle",
"dmaReading",
"dmaWriting",
"dmaReadWaiting",
"dmaWriteWaiting"
};
using namespace std;
///////////////////////////////////////////////////////////////////////
//
// NSGigE PCI Device
//
NSGigE::NSGigE(const std::string &name, IntrControl *i, Tick intr_delay,
PhysicalMemory *pmem, Tick tx_delay, Tick rx_delay,
MemoryController *mmu, HierParams *hier, Bus *header_bus,
Bus *payload_bus, Tick pio_latency, bool dma_desc_free,
bool dma_data_free, Tick dma_read_delay, Tick dma_write_delay,
Tick dma_read_factor, Tick dma_write_factor, PciConfigAll *cf,
PciConfigData *cd, Tsunami *t, uint32_t bus, uint32_t dev,
uint32_t func, bool rx_filter, const int eaddr[6],
uint32_t tx_fifo_size, uint32_t rx_fifo_size)
: PciDev(name, mmu, cf, cd, bus, dev, func), tsunami(t), ioEnable(false),
maxTxFifoSize(tx_fifo_size), maxRxFifoSize(rx_fifo_size),
txPacket(0), rxPacket(0), txPacketBufPtr(NULL), rxPacketBufPtr(NULL),
txXferLen(0), rxXferLen(0), txState(txIdle), txEnable(false),
CTDD(false), txFifoAvail(tx_fifo_size),
txFragPtr(0), txDescCnt(0), txDmaState(dmaIdle), rxState(rxIdle),
rxEnable(false), CRDD(false), rxPktBytes(0), rxFifoCnt(0),
rxFragPtr(0), rxDescCnt(0), rxDmaState(dmaIdle), extstsEnable(false),
rxDmaReadEvent(this), rxDmaWriteEvent(this),
txDmaReadEvent(this), txDmaWriteEvent(this),
dmaDescFree(dma_desc_free), dmaDataFree(dma_data_free),
txDelay(tx_delay), rxDelay(rx_delay), rxKickTick(0), txKickTick(0),
txEvent(this), rxFilterEnable(rx_filter), acceptBroadcast(false),
acceptMulticast(false), acceptUnicast(false),
acceptPerfect(false), acceptArp(false),
physmem(pmem), intctrl(i), intrTick(0), cpuPendingIntr(false),
intrEvent(0), interface(0)
{
tsunami->ethernet = this;
if (header_bus) {
pioInterface = newPioInterface(name, hier, header_bus, this,
&NSGigE::cacheAccess);
pioLatency = pio_latency * header_bus->clockRatio;
if (payload_bus)
dmaInterface = new DMAInterface<Bus>(name + ".dma",
header_bus, payload_bus, 1);
else
dmaInterface = new DMAInterface<Bus>(name + ".dma",
header_bus, header_bus, 1);
} else if (payload_bus) {
pioInterface = newPioInterface(name, hier, payload_bus, this,
&NSGigE::cacheAccess);
pioLatency = pio_latency * payload_bus->clockRatio;
dmaInterface = new DMAInterface<Bus>(name + ".dma", payload_bus,
payload_bus, 1);
}
intrDelay = US2Ticks(intr_delay);
dmaReadDelay = dma_read_delay;
dmaWriteDelay = dma_write_delay;
dmaReadFactor = dma_read_factor;
dmaWriteFactor = dma_write_factor;
regsReset();
rom.perfectMatch[0] = eaddr[0];
rom.perfectMatch[1] = eaddr[1];
rom.perfectMatch[2] = eaddr[2];
rom.perfectMatch[3] = eaddr[3];
rom.perfectMatch[4] = eaddr[4];
rom.perfectMatch[5] = eaddr[5];
}
NSGigE::~NSGigE()
{}
void
NSGigE::regStats()
{
txBytes
.name(name() + ".txBytes")
.desc("Bytes Transmitted")
.prereq(txBytes)
;
rxBytes
.name(name() + ".rxBytes")
.desc("Bytes Received")
.prereq(rxBytes)
;
txPackets
.name(name() + ".txPackets")
.desc("Number of Packets Transmitted")
.prereq(txBytes)
;
rxPackets
.name(name() + ".rxPackets")
.desc("Number of Packets Received")
.prereq(rxBytes)
;
txIpChecksums
.name(name() + ".txIpChecksums")
.desc("Number of tx IP Checksums done by device")
.precision(0)
.prereq(txBytes)
;
rxIpChecksums
.name(name() + ".rxIpChecksums")
.desc("Number of rx IP Checksums done by device")
.precision(0)
.prereq(rxBytes)
;
txTcpChecksums
.name(name() + ".txTcpChecksums")
.desc("Number of tx TCP Checksums done by device")
.precision(0)
.prereq(txBytes)
;
rxTcpChecksums
.name(name() + ".rxTcpChecksums")
.desc("Number of rx TCP Checksums done by device")
.precision(0)
.prereq(rxBytes)
;
txUdpChecksums
.name(name() + ".txUdpChecksums")
.desc("Number of tx UDP Checksums done by device")
.precision(0)
.prereq(txBytes)
;
rxUdpChecksums
.name(name() + ".rxUdpChecksums")
.desc("Number of rx UDP Checksums done by device")
.precision(0)
.prereq(rxBytes)
;
descDmaReads
.name(name() + ".descDMAReads")
.desc("Number of descriptors the device read w/ DMA")
.precision(0)
;
descDmaWrites
.name(name() + ".descDMAWrites")
.desc("Number of descriptors the device wrote w/ DMA")
.precision(0)
;
descDmaRdBytes
.name(name() + ".descDmaReadBytes")
.desc("number of descriptor bytes read w/ DMA")
.precision(0)
;
descDmaWrBytes
.name(name() + ".descDmaWriteBytes")
.desc("number of descriptor bytes write w/ DMA")
.precision(0)
;
txBandwidth
.name(name() + ".txBandwidth")
.desc("Transmit Bandwidth (bits/s)")
.precision(0)
.prereq(txBytes)
;
rxBandwidth
.name(name() + ".rxBandwidth")
.desc("Receive Bandwidth (bits/s)")
.precision(0)
.prereq(rxBytes)
;
txPacketRate
.name(name() + ".txPPS")
.desc("Packet Tranmission Rate (packets/s)")
.precision(0)
.prereq(txBytes)
;
rxPacketRate
.name(name() + ".rxPPS")
.desc("Packet Reception Rate (packets/s)")
.precision(0)
.prereq(rxBytes)
;
txBandwidth = txBytes * Stats::constant(8) / simSeconds;
rxBandwidth = rxBytes * Stats::constant(8) / simSeconds;
txPacketRate = txPackets / simSeconds;
rxPacketRate = rxPackets / simSeconds;
}
/**
* This is to read the PCI general configuration registers
*/
void
NSGigE::ReadConfig(int offset, int size, uint8_t *data)
{
if (offset < PCI_DEVICE_SPECIFIC)
PciDev::ReadConfig(offset, size, data);
else
panic("Device specific PCI config space not implemented!\n");
}
/**
* This is to write to the PCI general configuration registers
*/
void
NSGigE::WriteConfig(int offset, int size, uint32_t data)
{
if (offset < PCI_DEVICE_SPECIFIC)
PciDev::WriteConfig(offset, size, data);
else
panic("Device specific PCI config space not implemented!\n");
// Need to catch writes to BARs to update the PIO interface
switch (offset) {
// seems to work fine without all these PCI settings, but i
// put in the IO to double check, an assertion will fail if we
// need to properly implement it
case PCI_COMMAND:
if (config.data[offset] & PCI_CMD_IOSE)
ioEnable = true;
else
ioEnable = false;
#if 0
if (config.data[offset] & PCI_CMD_BME) {
bmEnabled = true;
}
else {
bmEnabled = false;
}
if (config.data[offset] & PCI_CMD_MSE) {
memEnable = true;
}
else {
memEnable = false;
}
#endif
break;
case PCI0_BASE_ADDR0:
if (BARAddrs[0] != 0) {
if (pioInterface)
pioInterface->addAddrRange(RangeSize(BARAddrs[0], BARSize[0]));
BARAddrs[0] &= PA_UNCACHED_MASK;
}
break;
case PCI0_BASE_ADDR1:
if (BARAddrs[1] != 0) {
if (pioInterface)
pioInterface->addAddrRange(RangeSize(BARAddrs[1], BARSize[1]));
BARAddrs[1] &= PA_UNCACHED_MASK;
}
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 No_Fault;
} 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 &reg = *(uint32_t *) data;
reg = 0;
return No_Fault;
} else if (daddr > 0x3FC)
panic("Something is messed up!\n");
switch (req->size) {
case sizeof(uint32_t):
{
uint32_t &reg = *(uint32_t *)data;
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 CFG:
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 TXCFG:
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 RXCFG:
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:
switch (regs.rfcr & RFCR_RFADDR) {
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:
panic("reading RFDR for something other than PMATCH!\n");
// didn't implement other RFDR functionality b/c
// driver didn't use it
}
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;
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 No_Fault;
}
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, *(uint32_t *)data);
return No_Fault;
} else if (daddr > 0x3FC)
panic("Something is messed up!\n");
if (req->size == sizeof(uint32_t)) {
uint32_t reg = *(uint32_t *)data;
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 CFG:
if (reg & CFG_LNKSTS ||
reg & CFG_SPDSTS ||
reg & CFG_DUPSTS ||
reg & CFG_RESERVED ||
reg & CFG_T64ADDR ||
reg & CFG_PCI64_DET)
panic("writing to read-only or reserved CFG bits!\n");
regs.config |= reg & ~(CFG_LNKSTS | CFG_SPDSTS | CFG_DUPSTS |
CFG_RESERVED | CFG_T64ADDR | CFG_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 0
if (reg & CFG_TBI_EN) ;
if (reg & CFG_MODE_1000) ;
#endif
if (reg & CFG_AUTO_1000)
panic("CFG_AUTO_1000 not implemented!\n");
#if 0
if (reg & CFG_PINT_DUPSTS ||
reg & CFG_PINT_LNKSTS ||
reg & CFG_PINT_SPDSTS)
;
if (reg & CFG_TMRTEST) ;
if (reg & CFG_MRM_DIS) ;
if (reg & CFG_MWI_DIS) ;
if (reg & CFG_T64ADDR)
panic("CFG_T64ADDR is read only register!\n");
if (reg & CFG_PCI64_DET)
panic("CFG_PCI64_DET is read only register!\n");
if (reg & CFG_DATA64_EN) ;
if (reg & CFG_M64ADDR) ;
if (reg & CFG_PHY_RST) ;
if (reg & CFG_PHY_DIS) ;
#endif
if (reg & CFG_EXTSTS_EN)
extstsEnable = true;
else
extstsEnable = false;
#if 0
if (reg & CFG_REQALG) ;
if (reg & CFG_SB) ;
if (reg & CFG_POW) ;
if (reg & CFG_EXD) ;
if (reg & CFG_PESEL) ;
if (reg & CFG_BROM_DIS) ;
if (reg & CFG_EXT_125) ;
if (reg & CFG_BEM) ;
#endif
break;
case MEAR:
regs.mear = reg;
// since phy is completely faked, MEAR_MD* don't matter
// and since the driver never uses MEAR_EE*, they don't
// matter
#if 0
if (reg & MEAR_EEDI) ;
if (reg & MEAR_EEDO) ; // this one is read only
if (reg & MEAR_EECLK) ;
if (reg & MEAR_EESEL) ;
if (reg & MEAR_MDIO) ;
if (reg & MEAR_MDDIR) ;
if (reg & MEAR_MDC) ;
#endif
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 TXCFG:
regs.txcfg = reg;
#if 0
if (reg & TXCFG_CSI) ;
if (reg & TXCFG_HBI) ;
if (reg & TXCFG_MLB) ;
if (reg & TXCFG_ATP) ;
if (reg & TXCFG_ECRETRY) {
/*
* this could easily be implemented, but considering
* the network is just a fake pipe, wouldn't make
* sense to do this
*/
}
if (reg & TXCFG_BRST_DIS) ;
#endif
#if 0
/* we handle our own DMA, ignore the kernel's exhortations */
if (reg & TXCFG_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:
regs.gpior = reg;
/* 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 RXCFG:
regs.rxcfg = reg;
#if 0
if (reg & RXCFG_AEP) ;
if (reg & RXCFG_ARP) ;
if (reg & RXCFG_STRIPCRC) ;
if (reg & RXCFG_RX_RD) ;
if (reg & RXCFG_ALP) ;
if (reg & RXCFG_AIRL) ;
/* we handle our own DMA, ignore what kernel says about it */
if (reg & RXCFG_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 & (RXCFG_DRTH | RXCFG_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;
#if 0
if (reg & RFCR_APAT)
panic("RFCR_APAT not implemented!\n");
#endif
if (reg & RFCR_MHEN || reg & RFCR_UHEN)
panic("hash filtering not implemented!\n");
if (reg & RFCR_ULM)
panic("RFCR_ULM not implemented!\n");
break;
case RFDR:
panic("the driver never writes to RFDR, something is wrong!\n");
case BRAR:
panic("the driver never uses BRAR, something is wrong!\n");
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");
break;
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:
regs.tanar = reg;
if (reg & TANAR_PS2)
panic("this isn't used in driver, something wrong!\n");
if (reg & TANAR_PS1)
panic("this isn't used in driver, something wrong!\n");
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 No_Fault;
}
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_NOIMPL;
regs.isr |= interrupts;
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))
when += intrDelay;
cpuIntrPost(when);
}
}
void
NSGigE::devIntrClear(uint32_t interrupts)
{
if (interrupts & ISR_RESERVE)
panic("Cannot clear a reserved interrupt");
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 cchip interrupt\n");
tsunami->cchip->postDRIR(configData->config.hdr.pci0.interruptLine);
}
}
void
NSGigE::cpuIntrClear()
{
if (!cpuPendingIntr)
return;
if (intrEvent) {
intrEvent->squash();
intrEvent = 0;
}
intrTick = 0;
cpuPendingIntr = false;
DPRINTF(EthernetIntr, "clearing cchip interrupt\n");
tsunami->cchip->clearDRIR(configData->config.hdr.pci0.interruptLine);
}
bool
NSGigE::cpuIntrPending() const
{ return cpuPendingIntr; }
void
NSGigE::txReset()
{
DPRINTF(Ethernet, "transmit reset\n");
CTDD = false;
txFifoAvail = maxTxFifoSize;
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);
rxFifoCnt = 0;
rxEnable = false;
rxFragPtr = 0;
assert(rxDescCnt == 0);
assert(rxDmaState == dmaIdle);
rxFifo.clear();
rxState = rxIdle;
}
void
NSGigE::regsReset()
{
memset(&regs, 0, sizeof(regs));
regs.config = CFG_LNKSTS;
regs.mear = MEAR_MDDIR | MEAR_EEDO;
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
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()
{
DPRINTF(EthernetSM, "receive kick rxState=%s (rxBuf.size=%d)\n",
NsRxStateStrings[rxState], rxFifo.size());
if (rxKickTick > curTick) {
DPRINTF(EthernetSM, "receive kick exiting, can't run till %d\n",
rxKickTick);
return;
}
next:
switch(rxDmaState) {
case dmaReadWaiting:
if (doRxDmaRead())
goto exit;
break;
case dmaWriteWaiting:
if (doRxDmaWrite())
goto exit;
break;
default:
break;
}
// 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 = &rxDescCache + offsetof(ns_desc, link);
rxDmaLen = sizeof(rxDescCache.link);
rxDmaFree = dmaDescFree;
descDmaReads++;
descDmaRdBytes += rxDmaLen;
if (doRxDmaRead())
goto exit;
} else {
rxState = rxDescRead;
rxDmaAddr = regs.rxdp & 0x3fffffff;
rxDmaData = &rxDescCache;
rxDmaLen = sizeof(ns_desc);
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,
"rxDescCache: addr=%08x read descriptor\n",
regs.rxdp & 0x3fffffff);
DPRINTF(EthernetDesc,
"rxDescCache: link=%08x bufptr=%08x cmdsts=%08x extsts=%08x\n",
rxDescCache.link, rxDescCache.bufptr, rxDescCache.cmdsts,
rxDescCache.extsts);
if (rxDescCache.cmdsts & CMDSTS_OWN) {
devIntrPost(ISR_RXIDLE);
rxState = rxIdle;
goto exit;
} else {
rxState = rxFifoBlock;
rxFragPtr = rxDescCache.bufptr;
rxDescCnt = rxDescCache.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)) {
const IpHdr *ip = rxPacket->ip();
if (ip) {
DPRINTF(Ethernet, "ID is %d\n", ip->id());
const TcpHdr *tcp = rxPacket->tcp();
if (tcp) {
DPRINTF(Ethernet, "Src Port=%d, Dest Port=%d\n",
tcp->sport(), tcp->dport());
}
}
}
#endif
// sanity check - i think the driver behaves like this
assert(rxDescCnt >= rxPktBytes);
// Must clear the value before popping to decrement the
// reference count
rxFifo.front() = NULL;
rxFifo.pop_front();
rxFifoCnt -= rxPacket->length;
}
// 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");
rxDescCache.cmdsts |= CMDSTS_OWN;
rxDescCache.cmdsts &= ~CMDSTS_MORE;
rxDescCache.cmdsts |= CMDSTS_OK;
rxDescCache.cmdsts &= 0xffff0000;
rxDescCache.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) {
rxDescCache.cmdsts &= ~CMDSTS_DEST_MASK;
EthHdr *eth = rxFifoFront()->eth();
if (eth->unicast())
rxDescCache.cmdsts |= CMDSTS_DEST_SELF;
if (eth->multicast())
rxDescCache.cmdsts |= CMDSTS_DEST_MULTI;
if (eth->broadcast())
rxDescCache.cmdsts |= CMDSTS_DEST_MASK;
}
#endif
if (extstsEnable && rxPacket->ip()) {
rxDescCache.extsts |= EXTSTS_IPPKT;
rxIpChecksums++;
IpHdr *ip = rxPacket->ip();
if (ip->ip_cksum() != 0) {
DPRINTF(EthernetCksum, "Rx IP Checksum Error\n");
rxDescCache.extsts |= EXTSTS_IPERR;
}
if (rxPacket->tcp()) {
rxDescCache.extsts |= EXTSTS_TCPPKT;
rxTcpChecksums++;
if (ip->tu_cksum() != 0) {
DPRINTF(EthernetCksum, "Rx TCP Checksum Error\n");
rxDescCache.extsts |= EXTSTS_TCPERR;
}
} else if (rxPacket->udp()) {
rxDescCache.extsts |= EXTSTS_UDPPKT;
rxUdpChecksums++;
if (ip->tu_cksum() != 0) {
DPRINTF(EthernetCksum, "Rx UDP Checksum Error\n");
rxDescCache.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,
"rxDescCache: addr=%08x writeback cmdsts extsts\n",
regs.rxdp & 0x3fffffff);
DPRINTF(EthernetDesc,
"rxDescCache: link=%08x bufptr=%08x cmdsts=%08x extsts=%08x\n",
rxDescCache.link, rxDescCache.bufptr, rxDescCache.cmdsts,
rxDescCache.extsts);
rxDmaAddr = (regs.rxdp + offsetof(ns_desc, cmdsts)) & 0x3fffffff;
rxDmaData = &(rxDescCache.cmdsts);
rxDmaLen = sizeof(rxDescCache.cmdsts) + sizeof(rxDescCache.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(rxDescCache.cmdsts & CMDSTS_OWN);
assert(rxPacket == 0);
devIntrPost(ISR_RXOK);
if (rxDescCache.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 (rxDescCache.link == 0) {
devIntrPost(ISR_RXIDLE);
rxState = rxIdle;
CRDD = true;
goto exit;
} else {
rxState = rxDescRead;
regs.rxdp = rxDescCache.link;
CRDD = false;
rxDmaAddr = regs.rxdp & 0x3fffffff;
rxDmaData = &rxDescCache;
rxDmaLen = sizeof(ns_desc);
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]);
}
void
NSGigE::transmit()
{
if (txFifo.empty()) {
DPRINTF(Ethernet, "nothing to transmit\n");
return;
}
DPRINTF(Ethernet, "Attempt Pkt Transmit: txFifo length=%d\n",
maxTxFifoSize - txFifoAvail);
if (interface->sendPacket(txFifo.front())) {
#if TRACING_ON
if (DTRACE(Ethernet)) {
const IpHdr *ip = txFifo.front()->ip();
if (ip) {
DPRINTF(Ethernet, "ID is %d\n", ip->id());
const TcpHdr *tcp = txFifo.front()->tcp();
if (tcp) {
DPRINTF(Ethernet, "Src Port=%d, Dest Port=%d\n",
tcp->sport(), tcp->dport());
}
}
}
#endif
DDUMP(Ethernet, txFifo.front()->data, txFifo.front()->length);
txBytes += txFifo.front()->length;
txPackets++;
txFifoAvail += txFifo.front()->length;
DPRINTF(Ethernet, "Successful Xmit! now txFifoAvail is %d\n",
txFifoAvail);
txFifo.front() = NULL;
txFifo.pop_front();
/*
* 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);
} else {
DPRINTF(Ethernet,
"May need to rethink always sending the descriptors back?\n");
}
if (!txFifo.empty() && !txEvent.scheduled()) {
DPRINTF(Ethernet, "reschedule transmit\n");
txEvent.schedule(curTick + 1000);
}
}
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()
{
DPRINTF(EthernetSM, "transmit kick txState=%s\n",
NsTxStateStrings[txState]);
if (txKickTick > curTick) {
DPRINTF(EthernetSM, "transmit kick exiting, can't run till %d\n",
txKickTick);
return;
}
next:
switch(txDmaState) {
case dmaReadWaiting:
if (doTxDmaRead())
goto exit;
break;
case dmaWriteWaiting:
if (doTxDmaWrite())
goto exit;
break;
default:
break;
}
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 = &txDescCache + offsetof(ns_desc, link);
txDmaLen = sizeof(txDescCache.link);
txDmaFree = dmaDescFree;
descDmaReads++;
descDmaRdBytes += txDmaLen;
if (doTxDmaRead())
goto exit;
} else {
txState = txDescRead;
txDmaAddr = regs.txdp & 0x3fffffff;
txDmaData = &txDescCache;
txDmaLen = sizeof(ns_desc);
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,
"txDescCache: link=%08x bufptr=%08x cmdsts=%08x extsts=%08x\n",
txDescCache.link, txDescCache.bufptr, txDescCache.cmdsts,
txDescCache.extsts);
if (txDescCache.cmdsts & CMDSTS_OWN) {
txState = txFifoBlock;
txFragPtr = txDescCache.bufptr;
txDescCnt = txDescCache.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;
txPacket->data = new uint8_t[16384];
txPacketBufPtr = txPacket->data;
}
if (txDescCnt == 0) {
DPRINTF(EthernetSM, "the txDescCnt == 0, done with descriptor\n");
if (txDescCache.cmdsts & CMDSTS_MORE) {
DPRINTF(EthernetSM, "there are more descriptors to come\n");
txState = txDescWrite;
txDescCache.cmdsts &= ~CMDSTS_OWN;
txDmaAddr = regs.txdp + offsetof(ns_desc, cmdsts);
txDmaAddr &= 0x3fffffff;
txDmaData = &(txDescCache.cmdsts);
txDmaLen = sizeof(txDescCache.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) {
IpHdr *ip = txPacket->ip();
if (txDescCache.extsts & EXTSTS_UDPPKT) {
UdpHdr *udp = txPacket->udp();
udp->sum(0);
udp->sum(ip->tu_cksum());
txUdpChecksums++;
} else if (txDescCache.extsts & EXTSTS_TCPPKT) {
TcpHdr *tcp = txPacket->tcp();
tcp->sum(0);
tcp->sum(ip->tu_cksum());
txTcpChecksums++;
}
if (txDescCache.extsts & EXTSTS_IPPKT) {
ip->sum(0);
ip->sum(ip->ip_cksum());
txIpChecksums++;
}
}
txPacket->length = txPacketBufPtr - txPacket->data;
// this is just because the receive can't handle a
// packet bigger want to make sure
assert(txPacket->length <= 1514);
txFifo.push_back(txPacket);
/*
* 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
*/
txDescCache.cmdsts &= ~CMDSTS_OWN;
txDescCache.cmdsts |= CMDSTS_OK;
DPRINTF(EthernetDesc,
"txDesc writeback: cmdsts=%08x extsts=%08x\n",
txDescCache.cmdsts, txDescCache.extsts);
txDmaAddr = regs.txdp + offsetof(ns_desc, cmdsts);
txDmaAddr &= 0x3fffffff;
txDmaData = &(txDescCache.cmdsts);
txDmaLen = sizeof(txDescCache.cmdsts) +
sizeof(txDescCache.extsts);
txDmaFree = dmaDescFree;
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 (txFifoAvail) {
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, txFifoAvail);
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;
txFifoAvail -= txXferLen;
txState = txFifoBlock;
break;
case txDescWrite:
if (txDmaState != dmaIdle)
goto exit;
if (txDescCache.cmdsts & CMDSTS_INTR)
devIntrPost(ISR_TXDESC);
txState = txAdvance;
break;
case txAdvance:
if (txDescCache.link == 0) {
devIntrPost(ISR_TXIDLE);
txState = txIdle;
goto exit;
} else {
txState = txDescRead;
regs.txdp = txDescCache.link;
CTDD = false;
txDmaAddr = txDescCache.link & 0x3fffffff;
txDmaData = &txDescCache;
txDmaLen = sizeof(ns_desc);
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]);
}
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 + 1);
else
txEvent.schedule(curTick + 1);
}
bool
NSGigE::rxFilter(PacketPtr packet)
{
bool drop = true;
string type;
EthHdr *eth = packet->eth();
if (eth->unicast()) {
// If we're accepting all unicast addresses
if (acceptUnicast)
drop = false;
// If we make a perfect match
if (acceptPerfect &&
memcmp(rom.perfectMatch, packet->data, EADDR_LEN) == 0)
drop = false;
if (acceptArp && eth->type() == ETH_TYPE_ARP)
drop = false;
} else if (eth->broadcast()) {
// if we're accepting broadcasts
if (acceptBroadcast)
drop = false;
} else if (eth->multicast()) {
// if we're accepting all multicasts
if (acceptMulticast)
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",
maxRxFifoSize - rxFifoCnt);
if (!rxEnable) {
DPRINTF(Ethernet, "receive disabled...packet dropped\n");
debug_break();
interface->recvDone();
return true;
}
if (rxFilterEnable && rxFilter(packet)) {
DPRINTF(Ethernet, "packet filtered...dropped\n");
interface->recvDone();
return true;
}
if ((rxFifoCnt + packet->length) >= maxRxFifoSize) {
DPRINTF(Ethernet,
"packet will not fit in receive buffer...packet dropped\n");
devIntrPost(ISR_RXORN);
return false;
}
rxFifo.push_back(packet);
rxFifoCnt += packet->length;
interface->recvDone();
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.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, EADDR_LEN);
SERIALIZE_SCALAR(ioEnable);
/*
* Serialize the data Fifos
*/
int txNumPkts = txFifo.size();
SERIALIZE_SCALAR(txNumPkts);
int i = 0;
pktiter_t end = txFifo.end();
for (pktiter_t p = txFifo.begin(); p != end; ++p) {
nameOut(os, csprintf("%s.txFifo%d", name(), i++));
(*p)->serialize(os);
}
int rxNumPkts = rxFifo.size();
SERIALIZE_SCALAR(rxNumPkts);
i = 0;
end = rxFifo.end();
for (pktiter_t p = rxFifo.begin(); p != end; ++p) {
nameOut(os, csprintf("%s.rxFifo%d", name(), i++));
(*p)->serialize(os);
}
/*
* Serialize the various helper variables
*/
bool txPacketExists = txPacket;
SERIALIZE_SCALAR(txPacketExists);
if (txPacketExists) {
nameOut(os, csprintf("%s.txPacket", name()));
txPacket->serialize(os);
uint32_t txPktBufPtr = (uint32_t) (txPacketBufPtr - txPacket->data);
SERIALIZE_SCALAR(txPktBufPtr);
}
bool rxPacketExists = rxPacket;
SERIALIZE_SCALAR(rxPacketExists);
if (rxPacketExists) {
nameOut(os, csprintf("%s.rxPacket", name()));
rxPacket->serialize(os);
uint32_t rxPktBufPtr = (uint32_t) (rxPacketBufPtr - rxPacket->data);
SERIALIZE_SCALAR(rxPktBufPtr);
}
SERIALIZE_SCALAR(txXferLen);
SERIALIZE_SCALAR(rxXferLen);
/*
* Serialize DescCaches
*/
SERIALIZE_SCALAR(txDescCache.link);
SERIALIZE_SCALAR(txDescCache.bufptr);
SERIALIZE_SCALAR(txDescCache.cmdsts);
SERIALIZE_SCALAR(txDescCache.extsts);
SERIALIZE_SCALAR(rxDescCache.link);
SERIALIZE_SCALAR(rxDescCache.bufptr);
SERIALIZE_SCALAR(rxDescCache.cmdsts);
SERIALIZE_SCALAR(rxDescCache.extsts);
/*
* Serialize tx state machine
*/
int txState = this->txState;
SERIALIZE_SCALAR(txState);
SERIALIZE_SCALAR(txEnable);
SERIALIZE_SCALAR(CTDD);
SERIALIZE_SCALAR(txFifoAvail);
SERIALIZE_SCALAR(txFragPtr);
SERIALIZE_SCALAR(txDescCnt);
int txDmaState = this->txDmaState;
SERIALIZE_SCALAR(txDmaState);
/*
* Serialize rx state machine
*/
int rxState = this->rxState;
SERIALIZE_SCALAR(rxState);
SERIALIZE_SCALAR(rxEnable);
SERIALIZE_SCALAR(CRDD);
SERIALIZE_SCALAR(rxPktBytes);
SERIALIZE_SCALAR(rxFifoCnt);
SERIALIZE_SCALAR(rxDescCnt);
int rxDmaState = this->rxDmaState;
SERIALIZE_SCALAR(rxDmaState);
SERIALIZE_SCALAR(extstsEnable);
/*
* 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);
/*
* 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 &section)
{
// 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.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, EADDR_LEN);
UNSERIALIZE_SCALAR(ioEnable);
/*
* unserialize the data fifos
*/
int txNumPkts;
UNSERIALIZE_SCALAR(txNumPkts);
int i;
for (i = 0; i < txNumPkts; ++i) {
PacketPtr p = new PacketData;
p->unserialize(cp, csprintf("%s.rxFifo%d", section, i));
txFifo.push_back(p);
}
int rxNumPkts;
UNSERIALIZE_SCALAR(rxNumPkts);
for (i = 0; i < rxNumPkts; ++i) {
PacketPtr p = new PacketData;
p->unserialize(cp, csprintf("%s.rxFifo%d", section, i));
rxFifo.push_back(p);
}
/*
* unserialize the various helper variables
*/
bool txPacketExists;
UNSERIALIZE_SCALAR(txPacketExists);
if (txPacketExists) {
txPacket = new PacketData;
txPacket->unserialize(cp, csprintf("%s.txPacket", 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;
rxPacket->unserialize(cp, csprintf("%s.rxPacket", section));
uint32_t rxPktBufPtr;
UNSERIALIZE_SCALAR(rxPktBufPtr);
rxPacketBufPtr = (uint8_t *) rxPacket->data + rxPktBufPtr;
} else
rxPacket = 0;
UNSERIALIZE_SCALAR(txXferLen);
UNSERIALIZE_SCALAR(rxXferLen);
/*
* Unserialize DescCaches
*/
UNSERIALIZE_SCALAR(txDescCache.link);
UNSERIALIZE_SCALAR(txDescCache.bufptr);
UNSERIALIZE_SCALAR(txDescCache.cmdsts);
UNSERIALIZE_SCALAR(txDescCache.extsts);
UNSERIALIZE_SCALAR(rxDescCache.link);
UNSERIALIZE_SCALAR(rxDescCache.bufptr);
UNSERIALIZE_SCALAR(rxDescCache.cmdsts);
UNSERIALIZE_SCALAR(rxDescCache.extsts);
/*
* unserialize tx state machine
*/
int txState;
UNSERIALIZE_SCALAR(txState);
this->txState = (TxState) txState;
UNSERIALIZE_SCALAR(txEnable);
UNSERIALIZE_SCALAR(CTDD);
UNSERIALIZE_SCALAR(txFifoAvail);
UNSERIALIZE_SCALAR(txFragPtr);
UNSERIALIZE_SCALAR(txDescCnt);
int txDmaState;
UNSERIALIZE_SCALAR(txDmaState);
this->txDmaState = (DmaState) txDmaState;
/*
* unserialize rx state machine
*/
int rxState;
UNSERIALIZE_SCALAR(rxState);
this->rxState = (RxState) rxState;
UNSERIALIZE_SCALAR(rxEnable);
UNSERIALIZE_SCALAR(CRDD);
UNSERIALIZE_SCALAR(rxPktBytes);
UNSERIALIZE_SCALAR(rxFifoCnt);
UNSERIALIZE_SCALAR(rxDescCnt);
int rxDmaState;
UNSERIALIZE_SCALAR(rxDmaState);
this->rxDmaState = (DmaState) rxDmaState;
UNSERIALIZE_SCALAR(extstsEnable);
/*
* 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);
/*
* 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 - addr);
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> tx_delay;
Param<Tick> rx_delay;
SimObjectParam<IntrControl *> intr_ctrl;
Param<Tick> intr_delay;
SimObjectParam<MemoryController *> mmu;
SimObjectParam<PhysicalMemory *> physmem;
Param<bool> rx_filter;
Param<string> hardware_address;
SimObjectParam<Bus*> header_bus;
SimObjectParam<Bus*> payload_bus;
SimObjectParam<HierParams *> hier;
Param<Tick> pio_latency;
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;
SimObjectParam<PciConfigAll *> configspace;
SimObjectParam<PciConfigData *> configdata;
SimObjectParam<Tsunami *> tsunami;
Param<uint32_t> pci_bus;
Param<uint32_t> pci_dev;
Param<uint32_t> pci_func;
Param<uint32_t> tx_fifo_size;
Param<uint32_t> rx_fifo_size;
END_DECLARE_SIM_OBJECT_PARAMS(NSGigE)
BEGIN_INIT_SIM_OBJECT_PARAMS(NSGigE)
INIT_PARAM_DFLT(tx_delay, "Transmit Delay", 1000),
INIT_PARAM_DFLT(rx_delay, "Receive Delay", 1000),
INIT_PARAM(intr_ctrl, "Interrupt Controller"),
INIT_PARAM_DFLT(intr_delay, "Interrupt Delay in microseconds", 0),
INIT_PARAM(mmu, "Memory Controller"),
INIT_PARAM(physmem, "Physical Memory"),
INIT_PARAM_DFLT(rx_filter, "Enable Receive Filter", true),
INIT_PARAM_DFLT(hardware_address, "Ethernet Hardware Address",
"00:99:00:00:00:01"),
INIT_PARAM_DFLT(header_bus, "The IO Bus to attach to for headers", NULL),
INIT_PARAM_DFLT(payload_bus, "The IO Bus to attach to for payload", NULL),
INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),
INIT_PARAM_DFLT(pio_latency, "Programmed IO latency in bus cycles", 1),
INIT_PARAM_DFLT(dma_desc_free, "DMA of Descriptors is free", false),
INIT_PARAM_DFLT(dma_data_free, "DMA of Data is free", false),
INIT_PARAM_DFLT(dma_read_delay, "fixed delay for dma reads", 0),
INIT_PARAM_DFLT(dma_write_delay, "fixed delay for dma writes", 0),
INIT_PARAM_DFLT(dma_read_factor, "multiplier for dma reads", 0),
INIT_PARAM_DFLT(dma_write_factor, "multiplier for dma writes", 0),
INIT_PARAM(configspace, "PCI Configspace"),
INIT_PARAM(configdata, "PCI Config data"),
INIT_PARAM(tsunami, "Tsunami"),
INIT_PARAM(pci_bus, "PCI bus"),
INIT_PARAM(pci_dev, "PCI device number"),
INIT_PARAM(pci_func, "PCI function code"),
INIT_PARAM_DFLT(tx_fifo_size, "max size in bytes of txFifo", 131072),
INIT_PARAM_DFLT(rx_fifo_size, "max size in bytes of rxFifo", 131072)
END_INIT_SIM_OBJECT_PARAMS(NSGigE)
CREATE_SIM_OBJECT(NSGigE)
{
int eaddr[6];
sscanf(((string)hardware_address).c_str(), "%x:%x:%x:%x:%x:%x",
&eaddr[0], &eaddr[1], &eaddr[2], &eaddr[3], &eaddr[4], &eaddr[5]);
return new NSGigE(getInstanceName(), intr_ctrl, intr_delay,
physmem, tx_delay, rx_delay, mmu, hier, header_bus,
payload_bus, pio_latency, dma_desc_free, dma_data_free,
dma_read_delay, dma_write_delay, dma_read_factor,
dma_write_factor, configspace, configdata,
tsunami, pci_bus, pci_dev, pci_func, rx_filter, eaddr,
tx_fifo_size, rx_fifo_size);
}
REGISTER_SIM_OBJECT("NSGigE", NSGigE)
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