188 lines
6.4 KiB
Groff
188 lines
6.4 KiB
Groff
.\" $NetBSD: ep.4,v 1.34 2003/06/27 18:22:53 wiz Exp $
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.\"
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.\" Copyright (c) 1997 Jonathan Stone
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.\" All rights reserved.
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.\"
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.\" Copyright (c) 1994 Herb Peyerl
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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 acknowledgements:
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.\" This product includes software developed by Herb Peyerl
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.\" This product includes software developed by Jonathan Stone
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.\" 4. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT 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 OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd March 17, 2001
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.Dt EP 4
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.Os
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.Sh NAME
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.Nm ep
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.Nd driver for 3Com EtherLink III Ethernet interfaces
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.Sh SYNOPSIS
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.Cd "ep0 at isa? port ? irq ?"
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.Cd "ep* at isapnp?"
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.Cd "ep* at eisa? slot ?"
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.Cd "ep* at mca? slot ?"
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.Cd "ep* at pci? dev ? function ?"
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.Cd "ep* at pcmcia? function ?"
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.Sh DESCRIPTION
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The
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.Nm ep
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device driver supports the 3Com EtherLink III family of Ethernet cards.
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.Pp
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The 3c515 is an ISA 10/100 card with DMA capability.
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The chipset is similar to that of the 3c905, with some changes to
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make it work with the more limited ISA bus address space. This card
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is supported, although DMA is not used.
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.Pp
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The EISA and PCI 3c59x devices use an older DMA engine which is not
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capable of multi-segment DMA. DMA on these devices is not used.
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.Pp
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The 3c529 is a MCA device, and doesn't support DMA.
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.Pp
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The PCI 3c90x devices have multi-segment DMA capability, which is
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not supported by the
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.Nm
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driver. To use the DMA capabilities of these cards, the
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.Xr ex 4
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driver must be used.
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.Pp
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The PCI 3c90xB devices are not supported by the
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.Nm
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driver, as they do not include support for programmed I/O. These
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devices are supported by the
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.Xr ex 4
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driver.
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.Pp
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The 3c575 is a CardBus device, and is supported by
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.Xr ex 4
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driver.
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.Sh MEDIA SELECTION
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There are 3 main chipset classes supported by the
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.Nm
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driver. Each has their own media selection capabilities.
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.Pp
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The first class is the
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.Dq 3c509
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class. This includes the 3c509, 3c509B, 3c529, 3c579, 3c562, and 3c589. These
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devices can support 10BASE-T, 10BASE2, and 10BASE5. Available media will
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be displayed when the device is found by the kernel.
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.Pp
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The second class is the
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.Dq Vortex
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class. This includes the 3c592, 3c579, 3c590, and 3c595. This class also
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includes the 3c900-TPO and 3c900-COMBO; they use the
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.Dq Boomerang
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chipset, but use Vortex-style media selection. These devices have many
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different media types varying by model. Some models have an external MII
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connector for connecting an external PHY. This is supported by means of the
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"manual" media type. Available media will be displayed when the device is
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found by the kernel.
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.Pp
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The third class is the
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.Dq Boomerang
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class. This includes the 3c515, 3c905, and 3c574. These devices support
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media selection via MII. The 3c515 and 3c905 have an
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.Xr nsphy 4 ,
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and the 3c574 has a
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.Xr tqphy 4 ,
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for this purpose. See
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.Xr ifmedia 4
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and
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.Xr mii 4
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for more information.
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.Sh HARDWARE
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Supported cards include:
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.Pp
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.Bl -tag -width xxxxxx -offset indent
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.It 3c509
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ISA 10Mbps card, in BNC and multiport variants
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.It 3c509B
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ISA Plug-and-Play 10Mbps card, in BNC and multiport variants
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.It 3c515
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ISA Plug-and-Play 10/100 card with UTP
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.It 3c529
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MCA 10Mbps card, in UTP+AUI and BNC+AUI variants
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.It 3c579
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EISA 10Mbps card, in UTP, BNC, and multiport variants
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.It 3c592
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EISA 10Mbps card with DMA capability
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.It 3c597
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EISA 10/100Mbps card with DMA capability
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.It 3c590
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PCI 10Mbps multiport card with DMA capability
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.It 3c595
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PCI 10/100Mbps with different media options and DMA capability
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.It 3c900
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PCI 10Mbps card in 10BASE-T and multiport variants with DMA capability
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.It 3c905
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PCI 10/100Mbps card in 10BASE-T, multiport, and fast variants with
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DMA capability
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.It 3c562
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PCMCIA modem/10Mbps Ethernet combo card with dongle
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.It 3c574
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PCMCIA 10/100Mbps card with dongle
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.It 3c589
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PCMCIA 10Mbps card with dongle
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.El
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.Sh NOTES
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EtherLink III cards have no jumpers to set the address.
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3Com supplies software to set the address of the card in software.
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To find the card on the ISA bus, the kernel performs a complex
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scan operation at IO address 0x100.
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.Em Beware !
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Avoid placing other cards at that address!
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.Pp
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The 3Com configuration utilities can `autosense' the active media and
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save it as default. The saved default medium is the medium that
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was active at the time the configuration utility was run. The
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.Nm
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driver does not yet re-autosense the active media at boot time.
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If the EEPROM autosense bit is set, the driver simply uses the media
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type sensed and saved when the configuration utility was run.
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "ep0: reset (status: %x)"
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the driver has encountered a FIFO underrun or overrun. The driver will reset
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the card and the packet will be lost. This is not fatal.
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.It "ep0: eeprom failed to come ready"
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The EEPROM failed to come ready. This probably means the card is wedged.
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.It "ep0: 3c509 in test mode. Erase pencil mark!"
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This means that someone has scribbled with pencil in the test area on the
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card. Erase the pencil mark and reboot. (This is not a joke).
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.El
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.Sh SEE ALSO
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.Xr eisa 4 ,
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.Xr ex 4 ,
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.Xr ifmedia 4 ,
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.Xr intro 4 ,
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.Xr isa 4 ,
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.Xr isapnp 4 ,
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.Xr mca 4 ,
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.Xr mii 4 ,
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.Xr nsphy 4 ,
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.Xr pci 4 ,
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.Xr pcmcia 4 ,
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.Xr tqphy 4 ,
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.Xr ifconfig 8
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