265 lines
8.3 KiB
Groff
265 lines
8.3 KiB
Groff
.\" Copyright (c) 2001 Wind River Systems
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.\" Copyright (c) 1997, 1998, 1999, 2000, 2001
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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 19, 2012
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.Dt BGE 4
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.Os
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.Sh NAME
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.Nm bge
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.Nd "Broadcom BCM57xx/BCM590x Gigabit/Fast Ethernet 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 bge"
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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_bge_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 Broadcom BCM570x,
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571x, 572x, 575x, 576x, 578x, 5776x and 5778x Gigabit Ethernet controller
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chips and the 590x and 5779x Fast Ethernet controller chips.
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.Pp
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All of these NICs are capable of 10, 100 and 1000Mbps speeds over CAT5
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copper cable, except for the SysKonnect SK-9D41 which supports only
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1000Mbps over multimode fiber.
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The BCM570x builds upon the technology of the Alteon Tigon II.
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It has two R4000 CPU cores and is PCI v2.2 and PCI-X v1.0 compliant.
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It supports IP, TCP
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and UDP checksum offload for both receive and transmit,
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multiple RX and TX DMA rings for QoS applications, rules-based
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receive filtering, and VLAN tag stripping/insertion as well as
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a 256-bit multicast hash filter.
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Additional features may be
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provided via value-add firmware updates.
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The BCM570x supports TBI (ten bit interface) and GMII
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transceivers, which means it can be used with either copper or 1000baseX
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fiber applications.
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Note however the device only supports a single
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speed in TBI mode.
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.Pp
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Most BCM5700-based cards also use the Broadcom BCM5401 or BCM5411 10/100/1000
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copper gigabit transceivers,
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which support autonegotiation of 10, 100 and 1000Mbps modes in
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full or half duplex.
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.Pp
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The BCM5700, BCM5701, BCM5702, BCM5703, BCM5704, BCM5714, BCM5717, BCM5719,
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BCM5720, BCM5780 and BCM57765 also support jumbo frames, which can be
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configured via the interface MTU setting.
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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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Using jumbo frames can greatly improve performance for certain tasks,
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such as file transfers and data streaming.
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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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.Ic 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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.Ic 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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Only
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.Cm full-duplex
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mode is supported.
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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 provides support for various NICs based on the Broadcom BCM570x
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family of Gigabit Ethernet controller chips, including the
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following:
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.Pp
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.Bl -bullet -compact
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.It
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3Com 3c996-SX (1000baseSX)
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.It
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3Com 3c996-T (10/100/1000baseTX)
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.It
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Dell PowerEdge 1750 integrated BCM5704C NIC (10/100/1000baseTX)
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.It
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Dell PowerEdge 2550 integrated BCM5700 NIC (10/100/1000baseTX)
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.It
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Dell PowerEdge 2650 integrated BCM5703 NIC (10/100/1000baseTX)
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.It
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Dell PowerEdge R200 integrated BCM5750 NIC (10/100/1000baseTX)
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.It
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Dell PowerEdge R300 integrated BCM5722 NIC (10/100/1000baseTX)
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.It
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IBM x235 server integrated BCM5703x NIC (10/100/1000baseTX)
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.It
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HP Compaq dc7600 integrated BCM5752 NIC (10/100/1000baseTX)
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.It
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HP ProLiant NC7760 embedded Gigabit NIC (10/100/1000baseTX)
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.It
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HP ProLiant NC7770 PCI-X Gigabit NIC (10/100/1000baseTX)
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.It
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HP ProLiant NC7771 PCI-X Gigabit NIC (10/100/1000baseTX)
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.It
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HP ProLiant NC7781 embedded PCI-X Gigabit NIC (10/100/1000baseTX)
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.It
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Netgear GA302T (10/100/1000baseTX)
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.It
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SysKonnect SK-9D21 (10/100/1000baseTX)
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.It
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SysKonnect SK-9D41 (1000baseSX)
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.El
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.Sh LOADER TUNABLES
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The following tunables can be set at the
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.Xr loader 8
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prompt before booting the kernel, or stored in
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.Xr loader.conf 5 .
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.Bl -tag -width indent
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.It Va hw.bge.allow_asf
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Allow the ASF feature for cooperating with IPMI.
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Can cause system lockup problems on a small number of systems.
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Enabled by default.
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.It Va dev.bge.%d.msi
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Non-zero value enables MSI support on the Ethernet hardware.
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The default value is 1.
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.El
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.Sh SYSCTL VARIABLES
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The following variables are available as both
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.Xr sysctl 8
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variables and
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.Xr loader 8
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tunables:
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.Bl -tag -width indent
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.It Va dev.bge.%d.forced_collapse
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Allow collapsing multiple transmit buffers into a single buffer
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to increase transmit performance with the cost of CPU cycles.
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The default value is 0 to disable transmit buffer collapsing.
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.It Va dev.bge.%d.forced_udpcsum
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Enable UDP transmit checksum offloading even if controller can generate
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UDP datagrams with checksum value 0.
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UDP datagrams with checksum value 0 can confuse receiver host as it means
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sender did not compute UDP checksum.
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The default value is 0 which disables UDP transmit checksum offloading.
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The interface need to be brought down and up again before a change takes
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effect.
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.El
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "bge%d: couldn't map memory"
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A fatal initialization error has occurred.
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.It "bge%d: couldn't map ports"
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A fatal initialization error has occurred.
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.It "bge%d: couldn't map interrupt"
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A fatal initialization error has occurred.
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.It "bge%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 "bge%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 "bge%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 "bge%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 altq 4 ,
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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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.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 4.5 .
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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 Mt wpaul@windriver.com .
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