1 .\" Copyright (c) 2001 Wind River Systems
2 .\" Copyright (c) 1997, 1998, 1999, 2000, 2001
3 .\" Bill Paul <wpaul@windriver.com>. All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
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32 .\" $FreeBSD: src/share/man/man4/bge.4,v 1.1.2.4 2003/02/17 21:20:39 trhodes Exp $
39 .Nd "Broadcom BCM570x PCI gigabit ethernet adapter driver"
46 driver provides support for various NICs based on the Broadcom BCM570x
47 family of gigabit ethernet controller chips, including the
52 3Com 3c996-T (10/100/1000baseT)
54 Dell PowerEdge 2550 integrated BCM5700 NIC (10/100/1000baseT)
56 Netgear GA302T (10/100/1000baseT)
58 SysKonnect SK-9D21 (10/100/1000baseT)
60 SysKonnect SK-9D41 (1000baseSX)
63 All of these NICs are capable of 10, 100 and 1000Mbps speeds over CAT5
64 copper cable, except for the SysKonnect SK-9D41 which supports only
65 1000Mbps over multimode fiber.
66 The BCM570x builds upon the technology of the Alteon Tigon II.
67 It has two R4000 CPU cores and is PCI v2.2 and PCI-X v1.0 compliant.
69 and UDP checksum offload for both receive and transmit,
70 multiple RX and TX DMA rings for QoS applications, rules-based
71 receive filtering, and VLAN tag stripping/insertion as well as
72 a 256-bit multicast hash filter.
73 Additional features may be
74 provided via value-add firmware updates.
75 The BCM570x supports TBI (ten bit interface) and GMII
76 transceivers, which means it can be used with either copper or 1000baseX
78 Note however the device only supports a single
81 Most cards also use the Broadcom BCM5401 or BCM5411 10/100/1000
82 copper gigabit transceivers,
83 which support autonegotiation of 10, 100 and 1000mbps modes in
86 The BCM5700 also supports jumbo frames, which can be configured
87 via the interface MTU setting.
88 Selecting an MTU larger than 1500 bytes with the
90 utility configures the adapter to receive and transmit jumbo frames.
91 Using jumbo frames can greatly improve performance for certain tasks,
92 such as file transfers and data streaming.
96 driver supports the following media types:
97 .Bl -tag -width ".Cm 10baseT/UTP"
99 Enable autoselection of the media type and options.
100 The user can manually override
101 the autoselected mode by adding media options to
104 Set 10Mbps operation.
108 option can also be used to select either
114 Set 100Mbps (fast ethernet) operation.
118 option can also be used to select either
124 Set 1000baseT operation over twisted pair.
130 Set 1000Mbps (gigabit ethernet) operation.
140 driver supports the following media options:
141 .Bl -tag -width ".Cm full-duplex"
143 Force full duplex operation.
145 Force half duplex operation.
150 driver also supports one special link option for 1000baseT cards:
151 .Bl -tag -width ".Cm link0"
153 With 1000baseT cards, establishing a link between two ports requires
154 that one port be configured as a master and the other a slave.
155 With autonegotiation,
156 the master/slave settings will be chosen automatically.
157 However when manually selecting the link state, it is necessary to
158 force one side of the link to be a master and the other a slave.
161 driver configures the ports as slaves by default.
166 will set a port as a master instead.
169 For more information on configuring this device, see
176 .Bl -tag -width indent
177 .It Va hw.bge.msi.enable
178 By default, the driver will use MSI if it is supported.
179 This behavior can be turned off by setting this tunable to 0.
180 .It Va hw.bge.fake_autoneg
184 if auto-negotiation between the onboard
186 and the switch module is broken.
191 .It "bge%d: couldn't map memory"
192 A fatal initialization error has occurred.
193 .It "bge%d: couldn't map ports"
194 A fatal initialization error has occurred.
195 .It "bge%d: couldn't map interrupt"
196 A fatal initialization error has occurred.
197 .It "bge%d: no memory for softc struct!"
198 The driver failed to allocate memory for per-device instance information
199 during initialization.
200 .It "bge%d: failed to enable memory mapping!"
201 The driver failed to initialize PCI shared memory mapping.
203 happen if the card is not in a bus-master slot.
204 .It "bge%d: no memory for jumbo buffers!"
205 The driver failed to allocate memory for jumbo frames during
207 .It "bge%d: watchdog timeout"
208 The device has stopped responding to the network, or there is a problem with
209 the network connection (cable).
223 device driver first appeared in
228 driver was written by
229 .An Bill Paul Aq Mt wpaul@windriver.com .