246 lines
8.9 KiB
Groff
246 lines
8.9 KiB
Groff
.\" $NetBSD: sk.4,v 1.7 2005/01/25 01:54:29 wiz Exp $
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.\"
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.\" Copyright (c) 2003, The NetBSD Foundation, Inc.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $OpenBSD: sk.4,v 1.20 2003/08/17 00:59:58 nate Exp $
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.\"
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.\" Copyright (c) 1997, 1998, 1999
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.\" Bill Paul <wpaul@ctr.columbia.edu>. 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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Bill Paul.
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.\" 4. Neither the name of the author nor the names of any co-contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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.\" THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD: src/share/man/man4/man4.i386/sk.4,v 1.3 1999/08/28 00:20:29 peter Exp $
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.\"
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.Dd January 23, 2005
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.Dt SK 4
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.Os
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.Sh NAME
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.Nm sk ,
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.Nm skc
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.Nd SysKonnect XMAC II and Marvell GMAC based gigabit ethernet
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.Sh SYNOPSIS
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.Cd "skc* at pci? dev ? function ?"
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.Cd "sk* at skc?"
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.Sh DESCRIPTION
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The
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.Nm sk
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driver provides support for SysKonnect based gigabit ethernet adapters
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and Marvell based gigabit ethernet adapters, including the following:
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.Pp
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.Bl -bullet -offset indent -compact
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.It
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SK-9821 SK-NET GE-T single port, copper adapter
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.It
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SK-9822 SK-NET GE-T dual port, copper adapter
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.It
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SK-9841 SK-NET GE-LX single port, single mode fiber adapter
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.It
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SK-9842 SK-NET GE-LX dual port, single mode fiber adapter
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.It
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SK-9843 SK-NET GE-SX single port, multimode fiber adapter
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.It
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SK-9844 SK-NET GE-SX dual port, multimode fiber adapter
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.It
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SK-9521 V2.0 single port, copper adapter (32-bit)
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.It
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SK-9821 V2.0 single port, copper adapter
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.It
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SK-9843 V2.0 single port, copper adapter
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.It
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3com 3c940 single port, copper adapter
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.It
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Belkin Gigabit Desktop Network PCI Card, single port, copper (32-bit)
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.It
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D-Link DGE-530T single port, copper adapter
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.It
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Linksys EG1032v2 single-port, copper adapter
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.It
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Linksys EG1064v2 single-port, copper adapter
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.El
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.Pp
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The SysKonnect based adapters consist of two main components: the
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XaQti Corp. XMAC II Gigabit MAC
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.Pq Nm sk
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and the SysKonnect GEnesis controller ASIC
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.Pq Nm skc .
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The XMAC provides the Gigabit MAC and PHY support
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while the GEnesis provides an interface to the PCI bus, DMA support,
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packet buffering and arbitration.
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The GEnesis can control up to two XMACs simultaneously,
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allowing dual-port NIC configurations.
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.Pp
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The Marvell based adapters are a single integrated circuit, but are
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still presented as a separate MAC
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.Pq Nm sk
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and controller ASIC
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.Pq Nm skc .
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At this time, there are no dual-port Marvell based NICs.
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.Pp
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The
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.Nm
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driver configures dual port SysKonnect adapters such that each XMAC
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is treated as a separate logical network interface.
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Both ports can operate independently of each other and can be connected
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to separate networks.
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The SysKonnect driver software currently only uses the second port on
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dual port adapters for failover purposes: if the link
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on the primary port fails, the SysKonnect driver will automatically
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switch traffic onto the second port.
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.Pp
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The XaQti XMAC II supports full and half duplex operation with
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autonegotiation.
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The XMAC also supports unlimited frame sizes.
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Support for jumbo frames is provided via the interface MTU setting.
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Selecting an MTU larger than 1500 bytes with the
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.Xr ifconfig 8
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utility configures the adapter to receive and transmit jumbo frames.
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Using jumbo frames can greatly improve performance for certain tasks,
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such as file transfers and data streaming.
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.Pp
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Hardware TCP/IP checksum offloading for IPv4 is supported.
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.Pp
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The following media types and options (as given to
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.Xr ifconfig 8 )
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are supported:
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.Bl -tag -width xxx -offset indent
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.It Cm media No autoselect
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Enable autoselection of the media type and options.
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The user can manually override
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the autoselected mode.
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.\" by adding media options to the appropriate
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.\" .Xr hostname.if 5
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.\" file.
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.It Cm media No 1000baseSX Cm mediaopt No full-duplex
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Set 1000Mbps (Gigabit Ethernet) operation on fiber and force full-duplex mode.
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.It Cm media No 1000baseSX Cm mediaopt No half-duplex
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Set 1000Mbps (Gigabit Ethernet) operation on fiber and force half-duplex mode.
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.It Cm media No 1000baseT Cm mediaopt No full-duplex
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Set 1000Mbps (Gigabit Ethernet) operation and force full-duplex mode.
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.El
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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To view a list of media types and options supported by the card, try
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.Ic ifconfig Fl m Aq device .
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For example,
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.Ic ifconfig Fl m Ar sk0 .
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "sk%d: couldn't map memory"
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A fatal initialization error has occurred.
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.It "sk%d: couldn't map ports"
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A fatal initialization error has occurred.
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.It "sk%d: couldn't map interrupt"
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A fatal initialization error has occurred.
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.It "sk%d: failed to enable memory mapping!"
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The driver failed to initialize PCI shared memory mapping.
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This might happen if the card is not in a bus-master slot.
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.It "sk%d: no memory for jumbo buffers!"
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The driver failed to allocate memory for jumbo frames during
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initialization.
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.It "sk%d: watchdog timeout"
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The device has stopped responding to the network, or there is a problem with
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the network connection (cable).
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.El
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.Sh SEE ALSO
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.Xr ifmedia 4 ,
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.Xr intro 4 ,
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.Xr netintro 4 ,
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.Xr pci 4 ,
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.Xr ifconfig 8
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.Rs
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.%T XaQti XMAC II datasheet
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.%O http://www.xaqti.com
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.Re
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.Rs
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.%T SysKonnect GEnesis programming manual
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.%O http://www.syskonnect.com
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.Re
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 3.0 .
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.Ox
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support was added in
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.Ox 2.6 .
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.Nx
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support was added in
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.Nx 2.0 .
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.Sh AUTHORS
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The
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.Nm
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driver was written by
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.An Bill Paul Aq wpaul@ctr.columbia.edu .
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.Sh BUGS
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This driver is
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.Em experimental .
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.Pp
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Support for the jumbo-frame feature does not currently work with
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Marvell-based adapters under
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.Nx
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and is disabled.
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.Pp
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Support for checksum offload is unimplemented.
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.Pp
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Performance with at least some Marvell-based adapters is poor,
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especially on loaded PCI buses or when the adapters are behind
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PCI-PCI bridges.
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It is believed that this is because the Marvell parts have
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significantly less buffering than the original SysKonnect cards
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had.
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