FXP(4) Device Drivers Manual FXP(4)

fxpIntel EtherExpress PRO/100 10/100 Ethernet device

fxp* at pci?
fxp* at cardbus?
icsphy* at mii?
inphy* at mii?
iophy* at mii?
nsphy* at mii?

The fxp device driver supports the Intel EtherExpress 100 family of Ethernet cards based on various revisions of the i82557, i82558, i82559, i82559S, i82550, i82551, and i82562 chipsets, including the following:

  • Intel EtherExpress PRO/100 PCI
  • Intel EtherExpress PRO/100B PCI
  • Intel EtherExpress PRO/100+ PCI
  • Intel EtherExpress PRO/100 Dual-Port PCI
  • Intel PRO/100 CardBus II PC Card
  • Intel PRO/100 VE
  • Intel PRO/100 VM
  • Intel PRO/100 M
  • Intel PRO/100 S

The following media types and options (as given to ifconfig(8)) are supported:

Enable autoselection of the media type and options (default).
100baseTX mediaopt full-duplex
Set 100Mbps (Fast Ethernet) operation and force full-duplex mode.
100baseTX mediaopt half-duplex
Set 100Mbps (Fast Ethernet) operation and force half-duplex mode.
10baseT mediaopt full-duplex
Set 10Mbps operation and force full-duplex.
10baseT mediaopt half-duplex
Set 10Mbps operation and force half-duplex.

If no media options are present, the fxp driver places the card into autoselect mode.

Some devices are able to do interrupt coalescing but it requires firmware updating. The following firmware files are potentially loaded on demand when an interface is brought up:


If a file is missing, the driver attempts to operate anyway.

fxp0: couldn't map memory
A fatal initialization error has occurred.
fxp0: couldn't map interrupt
A fatal initialization error has occurred.
fxp0: Failed to malloc memory
There are not enough mbufs available for allocation.
fxp0: device timeout
The device has stopped responding to the network, or there is a problem with the network connection (cable).
fxp0: error N, could not read firmware ...
The device is able to do interrupt coalescing but required firmware file is missing.

arp(4), cardbus(4), icsphy(4), ifmedia(4), inphy(4), intro(4), iophy(4), netintro(4), nsphy(4), pci(4), hostname.if(5), ifconfig(8)

The fxp device driver first appeared in OpenBSD 2.2.

The fxp device driver was written by David Greenman. This manual page was written by David E. O'Brien.

January 15, 2015 OpenBSD 7.5