1.\" Copyright (c) 2001 Wind River Systems 2.\" Copyright (c) 1997, 1998, 1999, 2000, 2001 3.\" Bill Paul <wpaul@windriver.com>. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by Bill Paul. 16.\" 4. Neither the name of the author nor the names of any co-contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30.\" THE POSSIBILITY OF SUCH DAMAGE. 31.\" 32.\" $FreeBSD$ 33.\" 34.Dd August 21, 2010 35.Dt BGE 4 36.Os 37.Sh NAME 38.Nm bge 39.Nd "Broadcom BCM570x/5714/5721/5722/5750/5751/5752/5761/5784/5789/57780 PCI Gigabit Ethernet adapter driver" 40.Sh SYNOPSIS 41To compile this driver into the kernel, 42place the following lines in your 43kernel configuration file: 44.Bd -ragged -offset indent 45.Cd "device miibus" 46.Cd "device bge" 47.Ed 48.Pp 49Alternatively, to load the driver as a 50module at boot time, place the following line in 51.Xr loader.conf 5 : 52.Bd -literal -offset indent 53if_bge_load="YES" 54.Ed 55.Sh DESCRIPTION 56The 57.Nm 58driver provides support for various NICs based on the Broadcom BCM570x, 595714, 5721, 5722, 5750, 5751, 5752, 5761, 5784, 5789 and 57780 families 60of Gigabit Ethernet controller chips. 61.Pp 62All of these NICs are capable of 10, 100 and 1000Mbps speeds over CAT5 63copper cable, except for the SysKonnect SK-9D41 which supports only 641000Mbps over multimode fiber. 65The BCM570x builds upon the technology of the Alteon Tigon II. 66It has two R4000 CPU cores and is PCI v2.2 and PCI-X v1.0 compliant. 67It supports IP, TCP 68and UDP checksum offload for both receive and transmit, 69multiple RX and TX DMA rings for QoS applications, rules-based 70receive filtering, and VLAN tag stripping/insertion as well as 71a 256-bit multicast hash filter. 72Additional features may be 73provided via value-add firmware updates. 74The BCM570x supports TBI (ten bit interface) and GMII 75transceivers, which means it can be used with either copper or 1000baseX 76fiber applications. 77Note however the device only supports a single 78speed in TBI mode. 79.Pp 80Most BCM5700-based cards also use the Broadcom BCM5401 or BCM5411 10/100/1000 81copper gigabit transceivers, 82which support autonegotiation of 10, 100 and 1000Mbps modes in 83full or half duplex. 84.Pp 85The BCM5700, BCM5701, BCM5702, BCM5703 and BCM5704 also support 86jumbo frames, which can be configured 87via the interface MTU setting. 88Selecting an MTU larger than 1500 bytes with the 89.Xr ifconfig 8 90utility configures the adapter to receive and transmit jumbo frames. 91Using jumbo frames can greatly improve performance for certain tasks, 92such as file transfers and data streaming. 93.Pp 94The 95.Nm 96driver supports the following media types: 97.Bl -tag -width ".Cm 10baseT/UTP" 98.It Cm autoselect 99Enable autoselection of the media type and options. 100The user can manually override 101the autoselected mode by adding media options to 102.Xr rc.conf 5 . 103.It Cm 10baseT/UTP 104Set 10Mbps operation. 105The 106.Xr ifconfig 8 107.Ic mediaopt 108option can also be used to select either 109.Cm full-duplex 110or 111.Cm half-duplex 112modes. 113.It Cm 100baseTX 114Set 100Mbps (Fast Ethernet) operation. 115The 116.Xr ifconfig 8 117.Ic mediaopt 118option can also be used to select either 119.Cm full-duplex 120or 121.Cm half-duplex 122modes. 123.It Cm 1000baseTX 124Set 1000baseTX operation over twisted pair. 125Only 126.Cm full-duplex 127mode is supported. 128.It Cm 1000baseSX 129Set 1000Mbps (Gigabit Ethernet) operation. 130Both 131.Cm full-duplex 132and 133.Cm half-duplex 134modes are supported. 135.El 136.Pp 137The 138.Nm 139driver supports the following media options: 140.Bl -tag -width ".Cm full-duplex" 141.It Cm full-duplex 142Force full duplex operation. 143.It Cm half-duplex 144Force half duplex operation. 145.El 146.Pp 147The 148.Nm 149driver also supports one special link option for 1000baseTX cards: 150.Bl -tag -width ".Cm link0" 151.It Cm link0 152With 1000baseTX cards, establishing a link between two ports requires 153that one port be configured as a master and the other a slave. 154With autonegotiation, 155the master/slave settings will be chosen automatically. 156However when manually selecting the link state, it is necessary to 157force one side of the link to be a master and the other a slave. 158The 159.Nm 160driver configures the ports as slaves by default. 161Setting the 162.Cm link0 163flag with 164.Xr ifconfig 8 165will set a port as a master instead. 166.El 167.Pp 168For more information on configuring this device, see 169.Xr ifconfig 8 . 170.Sh HARDWARE 171The 172.Nm 173driver provides support for various NICs based on the Broadcom BCM570x 174family of Gigabit Ethernet controller chips, including the 175following: 176.Pp 177.Bl -bullet -compact 178.It 1793Com 3c996-SX (1000baseSX) 180.It 1813Com 3c996-T (10/100/1000baseTX) 182.It 183Dell PowerEdge 1750 integrated BCM5704C NIC (10/100/1000baseTX) 184.It 185Dell PowerEdge 2550 integrated BCM5700 NIC (10/100/1000baseTX) 186.It 187Dell PowerEdge 2650 integrated BCM5703 NIC (10/100/1000baseTX) 188.It 189Dell PowerEdge R200 integrated BCM5750 NIC (10/100/1000baseTX) 190.It 191Dell PowerEdge R300 integrated BCM5722 NIC (10/100/1000baseTX) 192.It 193IBM x235 server integrated BCM5703x NIC (10/100/1000baseTX) 194.It 195HP Compaq dc7600 integrated BCM5752 NIC (10/100/1000baseTX) 196.It 197HP ProLiant NC7760 embedded Gigabit NIC (10/100/1000baseTX) 198.It 199HP ProLiant NC7770 PCI-X Gigabit NIC (10/100/1000baseTX) 200.It 201HP ProLiant NC7771 PCI-X Gigabit NIC (10/100/1000baseTX) 202.It 203HP ProLiant NC7781 embedded PCI-X Gigabit NIC (10/100/1000baseTX) 204.It 205Netgear GA302T (10/100/1000baseTX) 206.It 207SysKonnect SK-9D21 (10/100/1000baseTX) 208.It 209SysKonnect SK-9D41 (1000baseSX) 210.El 211.Sh LOADER TUNABLES 212The following tunable can be set at the 213.Xr loader 8 214prompt before booting the kernel, or stored in 215.Xr loader.conf 5 . 216.Bl -tag -width indent 217.It Va hw.bge.allow_asf 218Allow the ASF feature for cooperating with IPMI. 219Can cause system lockup problems on a small number of systems. 220Enabled by default. 221.El 222.Sh SYSCTL VARIABLES 223The following variables are available as both 224.Xr sysctl 8 225variables and 226.Xr loader 8 227tunables: 228.Bl -tag -width indent 229.It Va dev.bge.%d.forced_collapse 230Allow collapsing multiple transmit buffers into a single buffer 231to increase transmit performance with the cost of CPU cycles. 232The default value is 0 to disable transmit buffer collapsing. 233.It Va dev.bge.%d.forced_udpcsum 234Enable UDP transmit checksum offloading even if controller can generate 235UDP datagrams with checksum value 0. 236UDP datagrams with checksum value 0 can confuse receiver host as it means 237sender did not compute UDP checksum. 238The default value is 0 which disables UDP transmit checksum offloading. 239The interface need to be brought down and up again before a change takes 240effect. 241.El 242.Sh DIAGNOSTICS 243.Bl -diag 244.It "bge%d: couldn't map memory" 245A fatal initialization error has occurred. 246.It "bge%d: couldn't map ports" 247A fatal initialization error has occurred. 248.It "bge%d: couldn't map interrupt" 249A fatal initialization error has occurred. 250.It "bge%d: no memory for softc struct!" 251The driver failed to allocate memory for per-device instance information 252during initialization. 253.It "bge%d: failed to enable memory mapping!" 254The driver failed to initialize PCI shared memory mapping. 255This might 256happen if the card is not in a bus-master slot. 257.It "bge%d: no memory for jumbo buffers!" 258The driver failed to allocate memory for jumbo frames during 259initialization. 260.It "bge%d: watchdog timeout" 261The device has stopped responding to the network, or there is a problem with 262the network connection (cable). 263.El 264.Sh SEE ALSO 265.Xr altq 4 , 266.Xr arp 4 , 267.Xr miibus 4 , 268.Xr netintro 4 , 269.Xr ng_ether 4 , 270.Xr polling 4 , 271.Xr vlan 4 , 272.Xr ifconfig 8 273.Sh HISTORY 274The 275.Nm 276device driver first appeared in 277.Fx 4.5 . 278.Sh AUTHORS 279The 280.Nm 281driver was written by 282.An Bill Paul Aq wpaul@windriver.com . 283