1.\" $NetBSD: ep.4,v 1.37 2013/05/29 15:03:09 wiz Exp $ 2.\" 3.\" Copyright (c) 1997 Jonathan Stone 4.\" All rights reserved. 5.\" 6.\" Copyright (c) 1994 Herb Peyerl 7.\" All rights reserved. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgements: 19.\" This product includes software developed by Herb Peyerl 20.\" This product includes software developed by Jonathan Stone 21.\" 4. The name of the author may not be used to endorse or promote products 22.\" derived from this software without specific prior written permission 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34.\" 35.Dd October 30, 2007 36.Dt EP 4 37.Os 38.Sh NAME 39.Nm ep 40.Nd driver for 3Com EtherLink III Ethernet interfaces 41.Sh SYNOPSIS 42.Cd "ep0 at isa? port ? irq ?" 43.Cd "ep* at isapnp?" 44.Cd "ep* at eisa? slot ?" 45.Cd "ep* at mca? slot ?" 46.Cd "ep* at pci? dev ? function ?" 47.Cd "ep* at pcmcia? function ?" 48.Sh DESCRIPTION 49The 50.Nm 51device driver supports the 3Com EtherLink III family of Ethernet cards. 52.Pp 53The 3c515 is an ISA 10/100 card with DMA capability. 54The chipset is similar to that of the 3c905, with some changes to 55make it work with the more limited ISA bus address space. 56This card is supported, although DMA is not used. 57.Pp 58The EISA and PCI 3c59x devices use an older DMA engine which is not 59capable of multi-segment DMA. 60DMA on these devices is not used. 61.Pp 62The 3c529 is a MCA device, and doesn't support DMA. 63.Pp 64The PCI 3c90x devices have multi-segment DMA capability, which is 65not supported by the 66.Nm 67driver. 68To use the DMA capabilities of these cards, the 69.Xr ex 4 70driver must be used. 71.Pp 72The PCI 3c90xB devices are not supported by the 73.Nm 74driver, as they do not include support for programmed I/O. 75These devices are supported by the 76.Xr ex 4 77driver. 78.Pp 79The 3c575 is a CardBus device, and is supported by 80.Xr ex 4 81driver. 82.Sh MEDIA SELECTION 83There are 3 main chipset classes supported by the 84.Nm 85driver. 86Each has their own media selection capabilities. 87.Pp 88The first class is the 89.Dq 3c509 90class. 91This includes the 3c509, 3c509B, 3c529, 3c579, 3c562, and 3c589. 92These devices can support 10BASE-T, 10BASE2, and 10BASE5. 93Available media will be displayed when the device is found by the kernel. 94.Pp 95The second class is the 96.Dq Vortex 97class. 98This includes the 3c592, 3c579, 3c590, and 3c595. 99This class also includes the 3c900-TPO and 3c900-COMBO; they use the 100.Dq Boomerang 101chipset, but use Vortex-style media selection. 102These devices have many different media types varying by model. 103Some models have an external MII connector for connecting an external 104PHY. 105This is supported by means of the 106.Dq manual 107media type. 108Available media will be displayed when the device is found by the kernel. 109.Pp 110The third class is the 111.Dq Boomerang 112class. 113This includes the 3c515, 3c905, and 3c574. 114These devices support media selection via MII. 115The 3c515 and 3c905 have an 116.Xr nsphy 4 , 117and the 3c574 has a 118.Xr tqphy 4 , 119for this purpose. 120See 121.Xr ifmedia 4 122and 123.Xr mii 4 124for more information. 125.Sh HARDWARE 126Supported cards include: 127.Bl -tag -width xxxxxx -offset indent 128.It 3c509 129ISA 10Mbps card, in BNC and multiport variants 130.It 3c509B 131ISA Plug-and-Play 10Mbps card, in BNC and multiport variants 132.It 3c515 133ISA Plug-and-Play 10/100 card with UTP 134.It 3c529 135MCA 10Mbps card, in UTP+AUI and BNC+AUI variants 136.It 3c556B 137PCMCIA 56K modem-10/100Mbps Ethernet combo card with dongle 138.It 3c562 139PCMCIA modem-10Mbps Ethernet combo card with dongle 140.It 3c574 141PCMCIA 10/100Mbps card with dongle 142.It 3c579 143EISA 10Mbps card, in UTP, BNC, and multiport variants 144.It 3c589 145PCMCIA 10Mbps card with dongle 146.It 3c590 147PCI 10Mbps multiport card with DMA capability 148.It 3c592 149EISA 10Mbps card with DMA capability 150.It 3c595 151PCI 10/100Mbps with different media options and DMA capability 152.It 3c597 153EISA 10/100Mbps card with DMA capability 154.It 3c900 155PCI 10Mbps card in 10BASE-T and multiport variants with DMA capability 156.It 3c905 157PCI 10/100Mbps card in 10BASE-T, multiport, and fast variants with 158DMA capability 159.El 160.Sh NOTES 161EtherLink III cards have no jumpers to set the address. 1623Com supplies software to set the address of the card in software. 163To find the card on the ISA bus, the kernel performs a complex 164scan operation at IO address 0x100. 165.Em Beware ! 166Avoid placing other cards at that address! 167.Pp 168The 3Com configuration utilities can `autosense' the active media and 169save it as default. 170The saved default medium is the medium that 171was active at the time the configuration utility was run. 172The 173.Nm 174driver does not yet re-autosense the active media at boot time. 175If the EEPROM autosense bit is set, the driver simply uses the media 176type sensed and saved when the configuration utility was run. 177.Sh DIAGNOSTICS 178.Bl -diag 179.It "ep0: reset (status: %x)" 180The driver has encountered a FIFO underrun or overrun. 181The driver will reset the card and the packet will be lost. 182This is not fatal. 183.It "ep0: eeprom failed to come ready" 184The EEPROM failed to come ready. 185This probably means the card is wedged. 186.It "ep0: 3c509 in test mode. Erase pencil mark!" 187This means that someone has scribbled with pencil in the test area on the 188card. 189Erase the pencil mark and reboot. 190(This is not a joke.) 191.El 192.Sh SEE ALSO 193.Xr eisa 4 , 194.Xr ex 4 , 195.Xr ifmedia 4 , 196.Xr intro 4 , 197.Xr isa 4 , 198.Xr isapnp 4 , 199.Xr mca 4 , 200.Xr mii 4 , 201.Xr nsphy 4 , 202.Xr pci 4 , 203.Xr pcmcia 4 , 204.Xr tqphy 4 , 205.Xr ifconfig 8 206