fe -- Fujitsu MB86960A/MB86965A based Ethernet adapters
device fe 1
The fe is a network device driver for Ethernet adapters based on Fujitsu
MB86960A, MB86965A, or other compatible chips, such as:
+o Allied Telesis RE1000, RE1000Plus, ME1500 (110-pin)
+o CONTEC C-NET(98)P2, C-NET (9N)E (110-pin), C-NET(9N)C (ExtCard)
+o CONTEC C-NET(PC)C PCMCIA Ethernet
+o Eiger Labs EPX-10BT
+o Fujitsu FMV-J182, FMV-J182A
+o Fujitsu MBH10303, MBH10302 Ethernet PCMCIA
+o Fujitsu Towa LA501 Ethernet
+o HITACHI HT-4840-11
+o NextCom J Link NC5310
+o RATOC REX-5588, REX-9822, REX-4886, and REX-R280
+o RATOC REX-9880/9881/9882/9883
+o TDK LAC-98012, LAC-98013, LAC-98025, LAC-9N011 (110-pin)
+o TDK LAK-CD021, LAK-CD021A, LAK-CD021BX
+o Ungermann-Bass Access/PC N98C+(PC85152, PC85142), Access/NOTE
The driver provides automatic I/O port address configuration and automatic
IRQ configuration, when used with suitable adapter hardware.
The driver works with program I/O data transfer technique. It gives a
fair performance. Shared memory is never used, even if the adapter has
It currently works with Fujitsu FMV-180 series for ISA, Allied-Telesis
AT1700 series and RE2000 series for ISA, and Fujitsu MBH10302 PC card.
Parameters [Toc] [Back]
In the /boot/device.hints file, two parameters, port and irq, must be
specified to reflect adapter hardware settings. Another parameter flags
can be specified to provide additional configuration as an option.
The port parameter specifies a base I/O port address of the adapter. It
must match with the hardware setting of the adapter. The port may be
left unspecified by removing
from the file. In that case, the driver tries to detect the hardware
setting of the I/O address automatically. This feature may not work with
some adapter hardware.
The irq parameter specifies an IRQ number used by the adapter. It must
match the hardware setting of the adapter. Irq may be left unspecified
from the file. in that case, the driver tries to detect the hardware
setting of the IRQ automatically. This feature may not work on some
The flags is a numeric value which consists of a combination of various
device settings. The following flags are defined in the current version.
To specify two or more settings for a device, use a numeric sum of each
flag value. Flag bits not specified below are reserved and must be set
to 0. Actually, each bit is either just ignored by the driver, or tested
and used to control undocumented features of the driver. Consult the
source program for undocumented features.
0x007F These flag bits are used to initialize DLCR6 register of
MB86960A/MB86965A chip, when the 0x0080 bit of the flags is
set. See below for more about DLCR6 override feature. The
0x007F flag bits must be 0 unless the 0x0080 bit is set, to
maintain the compatibility with future versions of the driver.
0x0080 This flag overrides the default setting to the DLCR6 register
of MB86960A/MB86965A chip by a user supplied value, which is
taken from the lower 7 bits of the flag value. This is a troubleshooting
flag and should not be used without understanding
of the adapter hardware. Consult the Fujitsu manual for more
information on DLCR6 settings.
The fe driver has some private options, which can be specified with an
``option'' statement in the kernel configuration file. The following
lists the private options. The driver also accepts some other undocumented
options, all of whose names start with a fixed prefix FE_. Consult
the source program for undocumented options.
This option takes a numeric value level which controls the debugging
level for the device and/or the driver. Setting the FE_DEBUG option
to a value which is not listed here may cause undocumented behavior.
The default setting of this option is 1.
+o Setting FE_DEBUG=0 makes most of debugging codes, including sanity
check, be excluded from the object code of the driver. It
generates fastest and smallest object code. Some emergency messages
are logged even under this setting, though.
+o Setting FE_DEBUG=1 makes minimum debugging codes be included,
setting the amount of logged messages minimum. Only fatal error
messages are logged under this setting.
+o Setting FE_DEBUG=2 makes standard debugging codes be included,
setting the amount of logged messages middle. Messages on lair
events and/or questionable conditions are logged under this setting.
+o Setting FE_DEBUG=3 makes all debugging codes be included, and
set the amount of legged messages maximum. Redundant messages
such as those reporting usual actions or dumping register values
are logged under this setting.
FEATURES SPECIFIC TO HARDWARE MODELS [Toc] [Back]
The fe driver has some features and limitations which depend on adapter
hardware models. The following is a summary of such dependency.
Fujitsu FMV-180 series adapters [Toc] [Back]
Both automatic IRQ detection and automatic I/O port address detection is
available with these adapters.
Automatic I/O port address detection feature of fe works mostly fine for
FMV-180 series. It works even if there are two or more FMV-180s in a
system. However, some combination of other adapters may confuse the
driver. It is recommended to explicitly specify port when you experience
some difficulties with hardware probe.
Automatic IRQ detection feature of fe works reliably for FMV-180 series.
It is recommended to explicitly specify irq always for FMV-180. The
hardware setting of IRQ is read from the configuration EEPROM on the
adapter, even when the kernel config file specifies an IRQ value. The
driver will generate a warning message, if the IRQ setting specified in
/boot/device.hints does not match one stored in EEPROM. Then, it will
use the value specified in the file. (This behavior has been changed
from the previous releases.)
Allied-Telesis AT1700 series and RE2000 series adapters [Toc] [Back]
Automatic I/O port address detection is available with Allied-Telesis
AT1700 series and RE2000 series, while it is less reliable than FMV-180
series. Using the feature with Allied-Telesis adapters is not recommended.
Automatic IRQ detection is also available with some limitation. The fe
driver tries to get IRQ setting from the configuration EEPROM on the
board, if irq is not specified in /boot/device.hints. Unfortunately,
AT1700 series and RE2000 series seems to have two types of models; One
type allows IRQ selection from 3/4/5/9, while the other from 10/11/12/15.
Identification of the models are not well known. Hence, automatic IRQ
detection with Allied-Telesis adapters may not be reliable. Specify an
exact IRQ number if any troubles are encountered.
Differences between AT1700 series and RE2000 series or minor models in
those series are not recognized.
Fujitsu MBH10302 PC card [Toc] [Back]
The fe driver supports Fujitsu MBH10302 and compatible PC cards. It
requires the PC card (PCMCIA) support package.
netstat(1), ed(4), netintro(4), ng_ether(4), ifconfig(8), pccardd(8)
Following are major known bugs:
Statistics on the number of collisions maintained by the fe driver is not
accurate; the -i option of netstat(1) shows slightly less value than true
number of collisions.
More mbuf clusters are used than expected. The packet receive routine
has an intended violation against the mbuf cluster allocation policy.
The unnecessarily allocated clusters are freed within short lifetime, and
it will not affect long term kernel memory usage.
Although XNS and IPX supports are included in the driver, they are never
be tested and must have a lot of bugs.
AUTHORS, COPYRIGHT AND DISCLAIMER
The fe driver was originally written and contributed by M. Sekiguchi
<firstname.lastname@example.org>, following the ed driver written by David
Greenman. PC card support in fe is written by Hidetoshi Kimura
<email@example.com>. This manual page was written by M.
All Rights Reserved, Copyright (C) Fujitsu Limited 1995
This document and the associated software may be used, modified, copied,
distributed, and sold, in both source and binary form provided that the
above copyright, these terms and the following disclaimer are retained.
The name of the author and/or the contributor may not be used to endorse
or promote products derived from this document and the associated software
without specific prior written permission.
THIS DOCUMENT AND THE ASSOCIATED SOFTWARE IS PROVIDED BY THE AUTHOR AND
THE CONTRIBUTOR ``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 THE
AUTHOR OR THE CONTRIBUTOR 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 DOCUMENT
AND THE ASSOCIATED SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
The fe driver appeared in FreeBSD 2.0.5.
FreeBSD 5.2.1 March 3, 1996 FreeBSD 5.2.1 [ Back ]