.\" Copyright (c) 1997, 1998 .\" Bill Paul . All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by Bill Paul. .\" 4. Neither the name of the author nor the names of any co-contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF .\" THE POSSIBILITY OF SUCH DAMAGE. .\" .\" $FreeBSD$ .\" .Dd August 16, 1998 .Dt XL 4 .Os FreeBSD .Sh NAME .Nm xl .Nd 3Com Etherlink XL and Fast Etherlink XL ethernet device driver .Sh SYNOPSIS .Cd "device miibus" .Cd "device xl" .Sh DESCRIPTION The .Nm driver provides support for PCI ethernet adapters and embedded controllers based on the 3Com "boomerang" and "cyclone" bus-master Etherlink XL chips. This includes the 3c900-TP, 3c900-COMBO, 3c905-TX, 3c905-T4, 3c905B-TP, 3c905B-T4 and 3c905B-TX, and embedded 3c905-TX and 3c905B-TX ethernet hardware in certain Dell Optiplex and Dell Precision desktop machines, and certain Dell Latitude laptop docking stations. .Pp The Etherlink XL chips support built-in 10baseT, 10base2 and 10base5 transceivers as well as an MII bus for externally attached PHY transceivers. The 3c905 series typically uses a National Semiconductor NS 83840A 10/100 PHY for 10/100 Mbps support in full or half-duplex. The 3c905B adapters have built-in autonegotiation logic mapped onto the MII for compatibility with previous drivers. Fast Etherlink XL adapters such as the 3c905-TX and 3c905B-TX are capable of 10 or 100Mbps data rates in either full or half duplex and can be manually configured for any supported mode or automatically negotiate the highest possible mode with a link partner. .Pp The .Nm driver supports the following media types: .Pp .Bl -tag -width xxxxxxxxxxxxxxxxxxxx .It autoselect Enable autoselection of the media type and options. Note that this option is only available with the 3c905 and 3c905B adapters with external PHYs or built-in autonegotiation logic. For 3c900 adapters, the driver will choose the mode specified in the EEPROM. The user can change this by adding media options to the .Pa /etc/rc.conf file. .It 10baseT/UTP Set 10Mbps operation. The .Ar mediaopt option can also be used to select either .Ar full-duplex or .Ar half-duplex modes. .It 100baseTX Set 100Mbps (fast ethernet) operation. The .Ar mediaopt option can abso be used to select either .Ar full-duplex or .Ar half-duplex modes. .It 10base5/AUI Enable AUI transceiver (available only on COMBO cards). .It 10base2/BNC Enable BNC coax transceiver (available only on COMBO cards). .El .Pp The .Nm driver supports the following media options: .Pp .Bl -tag -width xxxxxxxxxxxxxxxxxxxx .It full-duplex Force full duplex operation .It half-duplex Force half duplex operation. .El .Pp Note that the 100baseTX media type is only available if supported by the adapter. For more information on configuring this device, see .Xr ifconfig 8 . .Sh DIAGNOSTICS .Bl -diag .It "xl%d: couldn't map memory" A fatal initialization error has occurred. .It "xl%d: couldn't map interrupt" A fatal initialization error has occurred. .It "xl%d: device timeout" The device has stopped responding to the network, or there is a problem with the network connection (cable). .It "xl%d: no memory for rx list" The driver failed to allocate an mbuf for the receiver ring. .It "xl%d: no memory for tx list" The driver failed to allocate an mbuf for the transmitter ring when allocating a pad buffer or collapsing an mbuf chain into a cluster. .It "xl%d: command never completed!" Some commands issued to the 3c90x ASIC take time to complete: the driver is supposed to wait until the 'command in progress' bit in the status register clears before continuing. In rare instances, this bit may not clear. To avoid getting caught in an infinite wait loop, the driver only polls the bit for a finite number of times before giving up, at which point it issues this message. This message may be printed during driver initialization on slower machines. If you see this message but the driver continues to function normally, the message can probably be ignored. .It "xl%d: chip is in D3 power state -- setting to D0" This message applies only to 3c905B adapters, which support power management. Some operating systems place the 3c905B in low power mode when shutting down, and some PCI BIOSes fail to bring the chip out of this state before configuring it. The 3c905B loses all of its PCI configuration in the D3 state, so if the BIOS does not set it back to full power mode in time, it won't be able to configure it correctly. The driver tries to detect this condition and bring the adapter back to the D0 (full power) state, but this may not be enough to return the driver to a fully operational condition. If you see this message at boot time and the driver fails to attach the device as a network interface, you will have to perform second warm boot to have the device properly configured. .Pp Note that this condition only occurs when warm booting from another operating system. If you power down your system prior to booting .Fx , the card should be configured correctly. .It "xl%d: WARNING: no media options bits set in the media options register!" This warning may appear when using the driver on some Dell Latitude docking stations with built-in 3c905-TX adapters. For whatever the reason, the 'MII available' bit in the media options register on this particular equipment is not set, even though it should be (the 3c905-TX always uses an external PHY transceiver). The driver will attempt to guess the proper media type based on the PCI device ID word. The driver makes a lot of noise about this condition because the author considers it a manufacturing defect. .El .Sh SEE ALSO .Xr arp 4 , .Xr netintro 4 , .Xr ng_ether 4 , .Xr ifconfig 8 .Sh HISTORY The .Nm device driver first appeared in .Fx 3.0 . .Sh AUTHORS The .Nm driver was written by .An Bill Paul Aq wpaul@ctr.columbia.edu .