197 lines
6.3 KiB
Groff
197 lines
6.3 KiB
Groff
.\" Copyright (c) 1997, 1998
|
|
.\" Bill Paul <wpaul@ctr.columbia.edu>. 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 July 16, 2005
|
|
.Dt WB 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm wb
|
|
.Nd "Winbond W89C840F Fast Ethernet device driver"
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following lines in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device miibus"
|
|
.Cd "device wb"
|
|
.Ed
|
|
.Pp
|
|
Alternatively, to load the driver as a
|
|
module at boot time, place the following line in
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
if_wb_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for PCI Ethernet adapters and embedded
|
|
controllers based on the Winbond W89C840F Fast Ethernet controller
|
|
chip.
|
|
The 840F should not be confused with the 940F, which is
|
|
an NE2000 clone and only supports 10Mbps speeds.
|
|
.Pp
|
|
The Winbond controller uses bus master DMA and is designed to be
|
|
a DEC 'tulip' workalike.
|
|
It differs from the standard DEC design
|
|
in several ways: the control and status registers are spaced 4
|
|
bytes apart instead of 8, and the receive filter is programmed through
|
|
registers rather than by downloading a special setup frame via
|
|
the transmit DMA engine.
|
|
Using an external PHY, the Winbond chip
|
|
supports both 10 and 100Mbps speeds in either full or half duplex.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports the following media types:
|
|
.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
|
|
.It autoselect
|
|
Enable autoselection of the media type and options.
|
|
This is only
|
|
supported if the PHY chip attached to the Winbond controller
|
|
supports NWAY autonegotiation.
|
|
The user can manually override
|
|
the autoselected mode 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 also be used to select either
|
|
.Ar full-duplex
|
|
or
|
|
.Ar half-duplex
|
|
modes.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports the following media options:
|
|
.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 HARDWARE
|
|
The
|
|
.Nm
|
|
driver supports Winbond W89C840F based Fast Ethernet
|
|
adapters and embedded controllers including:
|
|
.Pp
|
|
.Bl -bullet -compact
|
|
.It
|
|
Trendware TE100-PCIE
|
|
.El
|
|
.Sh DIAGNOSTICS
|
|
.Bl -diag
|
|
.It "wb%d: couldn't map memory"
|
|
A fatal initialization error has occurred.
|
|
.It "wb%d: couldn't map interrupt"
|
|
A fatal initialization error has occurred.
|
|
.It "wb%d: watchdog timeout"
|
|
The device has stopped responding to the network, or there is a problem with
|
|
the network connection (cable).
|
|
.It "wb%d: no memory for rx list"
|
|
The driver failed to allocate an mbuf for the receiver ring.
|
|
.It "wb%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 "wb%d: chip is in D3 power state -- setting to D0"
|
|
This message applies only to adapters which support power
|
|
management.
|
|
Some operating systems place the controller in low power
|
|
mode when shutting down, and some PCI BIOSes fail to bring the chip
|
|
out of this state before configuring it.
|
|
The controller 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 will not 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.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr arp 4 ,
|
|
.Xr miibus 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 Mt wpaul@ctr.columbia.edu .
|
|
.Sh BUGS
|
|
The Winbond chip seems to behave strangely in some cases when the
|
|
link partner switches modes.
|
|
If for example both sides are set to
|
|
10Mbps half-duplex, and the other end is changed to 100Mbps
|
|
full-duplex, the Winbond's receiver suddenly starts writing trash
|
|
all over the RX descriptors.
|
|
The
|
|
.Nm
|
|
driver handles this by forcing a reset of both the controller
|
|
chip and attached PHY.
|
|
This is drastic, but it appears to be the
|
|
only way to recover properly from this condition.
|