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media option generally should be used instead. Actually I think the lists of media types should be removed from the manual pages of MAC drivers altogether and users just pointed to the output of `ifconfig -m` instead; even before r215297 there were several outdated descriptions, technically it's wrong most of the time as not the MAC drivers support these media types but actually the PHY drivers do and it generally doesn't make sense to maintain these lists in every manual page of a driver as the media is auto-detected.
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262 lines
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.\" 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 November 23, 2010
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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 and BCM5717 also support
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jumbo frames, which can be configured
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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 tunable 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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.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 wpaul@windriver.com .
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