313 lines
9.2 KiB
Groff
313 lines
9.2 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 January 16, 2013
|
|
.Dt RL 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm rl
|
|
.Nd "RealTek 8129/8139 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 rl"
|
|
.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_rl_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for PCI Ethernet adapters and embedded
|
|
controllers based on the RealTek 8129 and 8139 Fast Ethernet controller
|
|
chips.
|
|
.Pp
|
|
The RealTek 8129/8139 series controllers use bus master DMA but do not use a
|
|
descriptor-based data transfer mechanism.
|
|
The receiver uses a
|
|
single fixed size ring buffer from which packets must be copied
|
|
into mbufs.
|
|
For transmission, there are only four outbound packet
|
|
address registers which require all outgoing packets to be stored
|
|
as contiguous buffers.
|
|
Furthermore, outbound packet buffers must
|
|
be longword aligned or else transmission will fail.
|
|
.Pp
|
|
The 8129 differs from the 8139 in that the 8139 has an internal
|
|
PHY which is controlled through special direct access registers
|
|
whereas the 8129 uses an external PHY via an MII bus.
|
|
The 8139
|
|
supports both 10 and 100Mbps speeds in either full or half duplex.
|
|
The 8129 can support the same speeds and modes given an appropriate
|
|
PHY chip.
|
|
.Pp
|
|
Note: support for the 8139C+ chip is provided by the
|
|
.Xr re 4
|
|
driver.
|
|
.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 RealTek 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
|
|
Adapters supported by the
|
|
.Nm
|
|
driver include:
|
|
.Pp
|
|
.Bl -bullet -compact
|
|
.It
|
|
Accton
|
|
.Dq Cheetah
|
|
EN1207D (MPX 5030/5038; RealTek 8139 clone)
|
|
.It
|
|
Allied Telesyn AT2550
|
|
.It
|
|
Allied Telesyn AT2500TX
|
|
.It
|
|
Belkin F5D5000
|
|
.It
|
|
BUFFALO (Melco INC.) LPC-CB-CLX (CardBus)
|
|
.It
|
|
Compaq HNE-300
|
|
.It
|
|
CompUSA no-name 10/100 PCI Ethernet NIC
|
|
.It
|
|
Corega FEther CB-TXD
|
|
.It
|
|
Corega FEtherII CB-TXD
|
|
.It
|
|
D-Link DFE-520TX (rev. C1)
|
|
.It
|
|
D-Link DFE-528TX
|
|
.It
|
|
D-Link DFE-530TX+
|
|
.It
|
|
D-Link DFE-538TX
|
|
.It
|
|
D-Link DFE-690TXD
|
|
.It
|
|
Edimax EP-4103DL CardBus
|
|
.It
|
|
Encore ENL832-TX 10/100 M PCI
|
|
.It
|
|
Farallon NetLINE 10/100 PCI
|
|
.It
|
|
Genius GF100TXR
|
|
.It
|
|
GigaFast Ethernet EE100-AXP
|
|
.It
|
|
KTX-9130TX 10/100 Fast Ethernet
|
|
.It
|
|
LevelOne FPC-0106TX
|
|
.It
|
|
Longshine LCS-8038TX-R
|
|
.It
|
|
NDC Communications NE100TX-E
|
|
.It
|
|
Netronix Inc.\& EA-1210 NetEther 10/100
|
|
.It
|
|
Nortel Networks 10/100BaseTX
|
|
.It
|
|
OvisLink LEF-8129TX
|
|
.It
|
|
OvisLink LEF-8139TX
|
|
.It
|
|
Peppercon AG ROL-F
|
|
.It
|
|
Planex FNW-3603-TX
|
|
.It
|
|
Planex FNW-3800-TX
|
|
.It
|
|
SMC EZ Card 10/100 PCI 1211-TX
|
|
.It
|
|
SOHO (PRAGMATIC) UE-1211C
|
|
.El
|
|
.Sh LOADER TUNABLES
|
|
.Bl -tag -width indent
|
|
.It Va dev.rl.%unit.prefer_iomap
|
|
This tunable controls which register mapping should be used on the
|
|
specified device.
|
|
A non-zero value enables I/O space register mapping.
|
|
For controllers that have no I/O space register mapping this tunable
|
|
should be set to 0 to use memory space register mapping.
|
|
The default value is 1 to use I/O space register mapping.
|
|
.It Va dev.rl.%unit.twister_enable
|
|
Non-zero value enables the long cable tuning on the specified device.
|
|
Disabled by default.
|
|
.El
|
|
.Sh DIAGNOSTICS
|
|
.Bl -diag
|
|
.It "rl%d: couldn't map memory"
|
|
A fatal initialization error has occurred.
|
|
.It "rl%d: couldn't map interrupt"
|
|
A fatal initialization error has occurred.
|
|
.It "rl%d: watchdog timeout"
|
|
The device has stopped responding to the network, or there is a problem with
|
|
the network connection (cable).
|
|
.It "rl%d: no memory for rx list"
|
|
The driver failed to allocate an mbuf for the receiver ring.
|
|
.It "rl%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 "rl%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 altq 4 ,
|
|
.Xr arp 4 ,
|
|
.Xr miibus 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr ng_ether 4 ,
|
|
.Xr polling 4 ,
|
|
.Xr ifconfig 8
|
|
.Rs
|
|
.%B The RealTek 8129, 8139 and 8139C+ datasheets
|
|
.%U http://www.realtek.com.tw
|
|
.Re
|
|
.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
|
|
Since outbound packets must be longword aligned, the transmit
|
|
routine has to copy an unaligned packet into an mbuf cluster buffer
|
|
before transmission.
|
|
The driver abuses the fact that the cluster buffer
|
|
pool is allocated at system startup time in a contiguous region starting
|
|
at a page boundary.
|
|
Since cluster buffers are 2048 bytes, they are
|
|
longword aligned by definition.
|
|
The driver probably should not be
|
|
depending on this characteristic.
|
|
.Pp
|
|
The RealTek data sheets are of especially poor quality,
|
|
and there is a lot of information missing
|
|
particularly concerning the receiver operation.
|
|
One particularly
|
|
important fact that the data sheets fail to mention relates to the
|
|
way in which the chip fills in the receive buffer.
|
|
When an interrupt
|
|
is posted to signal that a frame has been received, it is possible that
|
|
another frame might be in the process of being copied into the receive
|
|
buffer while the driver is busy handling the first one.
|
|
If the driver
|
|
manages to finish processing the first frame before the chip is done
|
|
DMAing the rest of the next frame, the driver may attempt to process
|
|
the next frame in the buffer before the chip has had a chance to finish
|
|
DMAing all of it.
|
|
.Pp
|
|
The driver can check for an incomplete frame by inspecting the frame
|
|
length in the header preceding the actual packet data: an incomplete
|
|
frame will have the magic length of 0xFFF0.
|
|
When the driver encounters
|
|
this value, it knows that it has finished processing all currently
|
|
available packets.
|
|
Neither this magic value nor its significance are
|
|
documented anywhere in the RealTek data sheets.
|