1.\" $NetBSD: ep.4,v 1.25 2000/01/28 01:55:27 enami 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 20, 1997 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 pci? dev ? function ?" 46.Cd "ep* at pcmcia? function ?" 47.Sh DESCRIPTION 48The 49.Nm ep 50device driver supports the 3Com Etherlink III family of Ethernet cards. 51.Pp 52The 3c515 is an ISA 10/100 card with DMA capability. 53The chipset is similar to that of the 3c905, with some changes to 54make it work with the more limited ISA bus address space. This card 55is not currently supported. 56.Pp 57The EISA and PCI 3c59x devices use an older DMA engine which is not 58capable of multi-segment DMA. DMA on these devices is not used. 59.Pp 60The PCI 3c90x devices have multi-segment DMA capability, which is 61not supported by the 62.Nm 63driver. To use the DMA capabilities of these cards, the 64.Xr ex 4 65driver must be used. 66.Pp 67The PCI 3c90xB devices are not supported by the 68.Nm 69driver, as they do not include support for programmed I/O. These 70devices are supported by the 71.Xr ex 4 72driver. 73.Pp 74The 3c575 is a CardBus device, and is supported by 75.Xr ex 4 76driver. 77.Sh MEDIA SELECTION 78There are 3 main chipset classes supported by the 79.Nm 80driver. Each has their own media selection capabilities. 81.Pp 82The first class is the 83.Dq 3c509 84class. This includes the 3c509, 3c509B, 3c579, 3c562, and 3c589. These 85devices can support 10baseT, 10base2, and 10base5. Available media will 86be displayed when the device is found by the kernel. 87.Pp 88The second class is the 89.Dq Vortex 90class. This includes the 3c592, 3c579, 3c590, and 3c595. This class also 91includes the 3c900-TPO and 3c900-COMBO; they use the 92.Dq Boomerang 93chipset, but use Vortex-style media selection. These devices many different 94media types varying by model. Some models have an external MII connector 95for connecting an external PHY. This is supported by means of the "manual" 96media type. Available media will be displayed when the device is found by 97the kernel. 98.Pp 99The third class is the 100.Dq Boomerang 101class. This includes the 3c905 and the 3c574. These devices support 102media selection via MII. The 3c905 has an internal 103.Xr nsphy 4 , 104and the 3c574 an internal 105.Xr tqphy 4 , 106for this purpose. See 107.Xr ifmedia 4 108and 109.Xr mii 4 110for more information. 111.Sh HARDWARE 112Supported cards include: 113.Pp 114.Bl -tag -width xxxxxx -offset indent 115.It 3c509 116ISA 10Mbps card, in BNC and multiport variants 117.It 3c509B 118ISA Plug-and-Play 10Mbps card, in BNC and multiport variants 119.It 3c579 120EISA 10Mbps card, in UTP, BNC, and muiltport variants 121.It 3c592 122EISA 10Mbps card with DMA capability 123.It 3c597 124EISA 10/100Mbps card with DMA capability 125.It 3c590 126PCI 10Mbps multiport card with DMA capability 127.It 3c595 128PCI 10/100Mbps with different media options and DMA capability 129.It 3c900 130PCI 10Mbps card in 10baseT and multiport variants with DMA capability 131.It 3c905 132PCI 10/100Mbps card in 10baseT, multiport, and fast variants with 133DMA capability 134.It 3c562 135PCMCIA modem/10Mbps Ethernet combo card with dongle 136.It 3c574 137PCMCIA 10/100Mbps card with dongle 138.It 3c589 139PCMCIA 10Mbps card with dongle 140.El 141.Sh NOTES 142Etherlink III cards have no jumpers to set the address. 1433Com supplies software to set the address of the card in software. 144To find the card on the ISA bus, the kernel performs a complex 145scan operation at IO address 0x100. 146Beware! 147Avoid placing other cards at that address! 148.Pp 149The 3Com configuration utilities can `autosense' the active media and 150save it as default. The saved default medium is the medium that 151was active atthe time the configuration utility was run. The 152.Nm 153driver does not yet re-autosense the active media at boot time. 154If the EEPROM autosense bit is set, the driver simply uses the media 155type sensed and saved when the configuration utility was run. 156.Sh DIAGNOSTICS 157.Bl -diag 158.It "ep0: reset (status: %x)" 159the driver has encountered a FIFO underrun or overrun. The driver will reset 160the card and the packet will be lost. This is not fatal. 161.It "ep0: eeprom failed to come ready" 162The eeprom failed to come ready. This probably means the card is wedged. 163.It "ep0: 3c509 in test mode. Erase pencil mark!" 164This means that someone has scribbled with pencil in the test area on the 165card. Erase the pencil mark and reboot. (This is not a joke). 166.El 167.Sh SEE ALSO 168.Xr eisa 4 , 169.Xr ex 4 , 170.Xr ifmedia 4 , 171.Xr mii 4 , 172.Xr nsphy 4 , 173.Xr tqphy 4 , 174.Xr intro 4 , 175.Xr isa 4 , 176.Xr isapnp 4 , 177.Xr mii 4 , 178.Xr pci 4 , 179.Xr pcmcia 4 , 180.Xr ifconfig 8 181