132 lines
4.3 KiB
Groff
132 lines
4.3 KiB
Groff
.\"
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.\" Copyright (c) 1998 Michael Smith
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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
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.\" are met:
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.\" 1. 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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.\" 2. 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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 20, 1998
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.Dt CS 4 i386
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.Os
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.Sh NAME
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.Nm cs
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.Nd Ethernet device driver
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.Sh SYNOPSIS
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.Cd "device cs"
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.Pp
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In
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.Pa /boot/device.hints :
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.Cd hint.cs.0.at="isa"
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.Cd hint.cs.0.port="0x300"
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.Cd hint.cs.0.irq="10"
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.Cd hint.cs.0.maddr="0xd000"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for ISA Ethernet adapters based on the
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.Tn Crystal Semiconductor CS8900
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and
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.Tn CS8920
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NICs.
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These devices are used on the
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.Tn IBM EtherJet ISA
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adapters and in many embedded applications where the high integration, small
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size and low cost of the CS89x0 family compensate for their drawbacks.
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.Pp
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The
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.Nm
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driver will obtain configuration parameters either from
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.Pa /boot/device.hints
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or from the card.
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At least the I/O port number must be specified.
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Other parameters specified in
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.Pa /boot/device.hints
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will be used if present;
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the card may be soft-configured so these may be any valid
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value.
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Adapters based on the CS8920 normally offer PnP configuration and the driver
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will detect the
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.Tn IBM EtherJet
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and the
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.Tn CSC6040
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adapters automatically.
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.Pp
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Note that the CS8900 is limited to 4 IRQ values; these are normally implemented
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as 5, 10, 11 and 12.
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The CS8920 has no such limitation.
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.Pp
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Memory-mapped and DMA operation are not supported at this time.
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "cs%d: full/half duplex negotiation timeout"
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The attempt to negotiate duplex settings with the hub timed out.
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This may
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indicate a cabling problem or a faulty or incompatible hub.
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.It "cs%d: failed to enable <media>"
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The CS89x0 failed to select the nominated media, either because it is not
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present or not operating correctly.
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.It "cs%d: No EEPROM, assuming defaults"
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The CS89x0 does not have an EEPROM, or the EEPROM is hopelessly damaged.
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Operation
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will only be successful if the configuration entry lists suitable values for
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the adapter.
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.It "cs%d: Invalid irq"
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The IRQ specified in the configuration entry is not valid for the adapter.
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.It "cs%d: Could not allocate memory for NIC"
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There is a critical memory shortage.
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The adapter will not function.
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.It "cs%d: Adapter has no media"
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The adapter is not configured for a specific media type.
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The media type will have
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to be manually set.
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.It "This is a %s, but LDN %d is disabled"
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The PnP probe code found a recognised adapter, but the adapter is disabled.
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.It "failed to read pnp parms"
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A PnP adapter was found, but configuration parameters for it could not be read.
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.It "failed to pnp card parameters"
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The parameters obtained via PnP were not accepted by the driver.
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The adapter
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may not function.
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.El
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.Sh CAVEATS
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The CS89x0 family of adapters have a very small RAM buffer (4K).
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This may
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cause problems with extremely high network loads or bursty network traffic.
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In particular, NFS operations should be limited to 1k read/write transactions
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in order to avoid overruns.
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr netintro 4 ,
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.Xr ng_ether 4 ,
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.Xr ifconfig 8
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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device driver was written by
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.An Maxim Bolotin
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and
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.An Oleg Sharoiko .
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This manpage was written by
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.An Michael Smith .
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