1 .\" Copyright (c) 2001 Wind River Systems
2 .\" Copyright (c) 1997, 1998, 1999, 2000, 2001
3 .\" Bill Paul <wpaul@windriver.com>. All rights reserved.
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6 .\" modification, are permitted provided that the following conditions
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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 $
33 .\" $DragonFly: src/share/man/man4/bge.4,v 1.9 2008/03/16 15:50:22 hasso Exp $
40 .Nd "Broadcom BCM570x PCI gigabit ethernet adapter driver"
47 driver provides support for various NICs based on the Broadcom BCM570x
48 family of gigabit ethernet controller chips, including the
53 3Com 3c996-T (10/100/1000baseT)
55 Dell PowerEdge 2550 integrated BCM5700 NIC (10/100/1000baseT)
57 Netgear GA302T (10/100/1000baseT)
59 SysKonnect SK-9D21 (10/100/1000baseT)
61 SysKonnect SK-9D41 (1000baseSX)
64 All of these NICs are capable of 10, 100 and 1000Mbps speeds over CAT5
65 copper cable, except for the SysKonnect SK-9D41 which supports only
66 1000Mbps over multimode fiber.
67 The BCM570x builds upon the technology of the Alteon Tigon II.
68 It has two R4000 CPU cores and is PCI v2.2 and PCI-X v1.0 compliant.
70 and UDP checksum offload for both receive and transmit,
71 multiple RX and TX DMA rings for QoS applications, rules-based
72 receive filtering, and VLAN tag stripping/insertion as well as
73 a 256-bit multicast hash filter.
74 Additional features may be
75 provided via value-add firmware updates.
76 The BCM570x supports TBI (ten bit interface) and GMII
77 transceivers, which means it can be used with either copper or 1000baseX
79 Note however the device only supports a single
82 Most cards also use the Broadcom BCM5401 or BCM5411 10/100/1000
83 copper gigabit transceivers,
84 which support autonegotiation of 10, 100 and 1000mbps modes in
87 The BCM5700 also supports jumbo frames, which can be configured
88 via the interface MTU setting.
89 Selecting an MTU larger than 1500 bytes with the
91 utility configures the adapter to receive and transmit jumbo frames.
92 Using jumbo frames can greatly improve performance for certain tasks,
93 such as file transfers and data streaming.
97 driver supports the following media types:
98 .Bl -tag -width ".Cm 10baseT/UTP"
100 Enable autoselection of the media type and options.
101 The user can manually override
102 the autoselected mode by adding media options to
105 Set 10Mbps operation.
109 option can also be used to select either
115 Set 100Mbps (fast ethernet) operation.
119 option can also be used to select either
125 Set 1000baseT operation over twisted pair.
131 Set 1000Mbps (gigabit ethernet) operation.
141 driver supports the following media options:
142 .Bl -tag -width ".Cm full-duplex"
144 Force full duplex operation.
146 Force half duplex operation.
151 driver also supports one special link option for 1000baseT cards:
152 .Bl -tag -width ".Cm link0"
154 With 1000baseT cards, establishing a link between two ports requires
155 that one port be configured as a master and the other a slave.
156 With autonegotiation,
157 the master/slave settings will be chosen automatically.
158 However when manually selecting the link state, it is necessary to
159 force one side of the link to be a master and the other a slave.
162 driver configures the ports as slaves by default.
167 will set a port as a master instead.
170 For more information on configuring this device, see
173 .Bl -tag -width ".Va hw.bge.fake_autoneg"
174 .It Va hw.bge.fake_autoneg
178 if auto-negotiation between the onboard
180 and the switch module is broken.
185 .It "bge%d: couldn't map memory"
186 A fatal initialization error has occurred.
187 .It "bge%d: couldn't map ports"
188 A fatal initialization error has occurred.
189 .It "bge%d: couldn't map interrupt"
190 A fatal initialization error has occurred.
191 .It "bge%d: no memory for softc struct!"
192 The driver failed to allocate memory for per-device instance information
193 during initialization.
194 .It "bge%d: failed to enable memory mapping!"
195 The driver failed to initialize PCI shared memory mapping.
197 happen if the card is not in a bus-master slot.
198 .It "bge%d: no memory for jumbo buffers!"
199 The driver failed to allocate memory for jumbo frames during
201 .It "bge%d: watchdog timeout"
202 The device has stopped responding to the network, or there is a problem with
203 the network connection (cable).
216 device driver first appeared in
221 driver was written by
222 .An Bill Paul Aq wpaul@windriver.com .