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latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
243 lines
7.5 KiB
Groff
243 lines
7.5 KiB
Groff
.\" Copyright (c) 2003
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.\" Bill Paul <wpaul@windriver.com>. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Bill Paul.
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.\" 4. Neither the name of the author nor the names of any co-contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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.\" THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 14, 2006
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.Dt RE 4
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.Os
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.Sh NAME
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.Nm re
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.Nd "RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device miibus"
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.Cd "device re"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_re_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for various NICs based on the RealTek RTL8139C+,
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RTL8169, RTL8169S, RTL8110S, RTL8168S, RTL8111S and RTL8101E PCI and
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PCIe Ethernet controllers.
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.Pp
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NICs based on the 8139C+ and 8101E are capable of 10 and 100Mbps speeds
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over CAT5 cable.
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NICs based on the 8169, 816xS and 811xS are capable of 10, 100 and
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1000Mbps operation.
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.Pp
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All NICs supported by the
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.Nm
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driver have TCP/IP checksum offload and hardware VLAN tagging/insertion
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features, and use a descriptor-based DMA mechanism.
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They are also
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capable of TCP large send (TCP segmentation offload).
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.Pp
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The 8139C+ is a single-chip solution combining both a 10/100 MAC and PHY.
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The 8169 is a 10/100/1000 MAC only, requiring a GMII or TBI external PHY.
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The 8169S and 8110S are single-chip devices containing both a 10/100/1000
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MAC and 10/100/1000 copper PHY.
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Standalone 10/100/1000 cards are available
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in both 32-bit PCI and 64-bit PCI models.
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The 8110S is designed for
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embedded LAN-on-motherboard applications.
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.Pp
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The 8169, 8169S and 8110S also support jumbo frames, which can be configured
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via the interface MTU setting.
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The MTU is limited to 7422, since the chip cannot transmit larger frames.
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Selecting an MTU larger than 1500 bytes with the
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.Xr ifconfig 8
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utility configures the adapter to receive and transmit jumbo frames.
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.Pp
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The
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.Nm
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driver supports the following media types:
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.Bl -tag -width ".Cm 10baseT/UTP"
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.It Cm autoselect
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Enable autoselection of the media type and options.
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The user can manually override
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the autoselected mode by adding media options to
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.Xr rc.conf 5 .
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.It Cm 10baseT/UTP
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Set 10Mbps operation.
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The
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.Xr ifconfig 8
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.Cm mediaopt
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option can also be used to select either
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.Cm full-duplex
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or
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.Cm half-duplex
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modes.
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.It Cm 100baseTX
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Set 100Mbps (Fast Ethernet) operation.
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The
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.Xr ifconfig 8
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.Cm mediaopt
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option can also be used to select either
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.Cm full-duplex
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or
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.Cm half-duplex
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modes.
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.It Cm 1000baseTX
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Set 1000baseTX operation over twisted pair.
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The RealTek gigE chips support 1000Mbps in
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.Cm full-duplex
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mode only.
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.\" .It Cm 1000baseSX
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.\" Set 1000Mbps (Gigabit Ethernet) operation.
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.\" Both
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.\" .Cm full-duplex
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.\" and
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.\" .Cm half-duplex
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.\" modes are supported.
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.El
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.Pp
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The
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.Nm
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driver supports the following media options:
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.Bl -tag -width ".Cm full-duplex"
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.It Cm full-duplex
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Force full duplex operation.
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.It Cm half-duplex
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Force half duplex operation.
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.El
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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.Sh HARDWARE
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The
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.Nm
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driver supports RealTek RTL8139C+, RTL8169, RTL816xS, RTL811xS,
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and RTL8101E based Fast Ethernet and Gigabit Ethernet adapters including:
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.Pp
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.Bl -bullet -compact
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.It
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Alloy Computer Products EtherGOLD 1439E 10/100 (8139C+)
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.It
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Compaq Evo N1015v Integrated Ethernet (8139C+)
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.It
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Corega CG-LAPCIGT Gigabit Ethernet (8169S)
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.It
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D-Link DGE-528(T) Gigabit Ethernet (8169S)
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.It
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Gigabyte 7N400 Pro2 Integrated Gigabit Ethernet (8110S)
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.It
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LevelOne GNC-0105T (8169S)
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.It
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LinkSys EG1032 (32-bit PCI)
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.It
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PLANEX COMMUNICATIONS Inc.\& GN-1200TC (8169S)
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.It
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Xterasys XN-152 10/100/1000 NIC (8169)
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.El
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "re%d: couldn't map memory"
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A fatal initialization error has occurred.
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.It "re%d: couldn't map ports"
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A fatal initialization error has occurred.
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.It "re%d: couldn't map interrupt"
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A fatal initialization error has occurred.
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.It "re%d: no memory for softc struct!"
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The driver failed to allocate memory for per-device instance information
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during initialization.
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.It "re%d: failed to enable memory mapping!"
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The driver failed to initialize PCI shared memory mapping.
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This might
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happen if the card is not in a bus-master slot.
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.It "re%d: no memory for jumbo buffers!"
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The driver failed to allocate memory for jumbo frames during
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initialization.
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.It "re%d: watchdog timeout"
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The device has stopped responding to the network, or there is a problem with
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the network connection (cable).
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.El
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr miibus 4 ,
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.Xr netintro 4 ,
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.Xr ng_ether 4 ,
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.Xr polling 4 ,
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.Xr vlan 4 ,
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.Xr ifconfig 8
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.Rs
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.%T RealTek Semiconductor RTL8139C+, RTL8169, RTL8169S and RTL8110S datasheets
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.%O http://www.realtek.com.tw/
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.Re
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 5.2 .
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.Sh AUTHORS
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The
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.Nm
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driver was written by
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.An Bill Paul Aq wpaul@windriver.com .
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.Sh BUGS
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The Xterasys XN-152 32-bit PCI NIC, which uses the RTL8169 MAC and
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Marvell 88E1000 PHY, has a defect that causes DMA corruption
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if the board is plugged into a 64-bit PCI slot.
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The defect
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lies in the board design, not the chip itself: the PCI REQ64# and ACK64#
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lines should be pulled high, but they are not.
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The result is that the
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8169 chip is tricked into performing 64-bit DMA transfers even though
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a 64-bit data path between the NIC and the bus does not actually exist.
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.Pp
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Unfortunately, it is not possible to correct this problem in software,
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however it is possible to detect it.
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When the
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.Nm
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driver is loaded, it will run a diagnostic routine designed to
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validate DMA operation by placing the chip in digital loopback mode
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and initiating a packet transmission.
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If the card functions properly,
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the transmitted data will
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be echoed back unmodified.
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If the echoed data is corrupt, the driver
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will print an error message on the console and abort the device attach.
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The
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user should insure the NIC is installed in a 32-bit PCI slot to
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avoid this problem.
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.Pp
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The RealTek 8169, 8169S and 8110S chips appear to only be capable of
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transmitting jumbo frames up to 7.5K in size.
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