1 .\" Copyright (c) 1997, 1998
2 .\" Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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31 .\" $FreeBSD: src/share/man/man4/xl.4,v 1.11.2.6 2003/02/17 21:20:39 trhodes Exp $
32 .\" $DragonFly: src/share/man/man4/xl.4,v 1.5 2007/02/25 12:03:07 swildner Exp $
39 .Nd "3Com Etherlink XL and Fast Etherlink XL ethernet device driver"
46 driver provides support for PCI ethernet adapters and embedded
47 controllers based on the 3Com "boomerang" and "cyclone" bus-master
49 This includes the 3c900-TP, 3c900-COMBO, 3c905-TX,
50 3c905-T4, 3c905B-TP, 3c905B-T4 and 3c905B-TX, and embedded 3c905-TX
51 and 3c905B-TX ethernet hardware in certain Dell Optiplex and Dell
52 Precision desktop machines, and certain Dell Latitude laptop docking
55 The Etherlink XL chips support built-in 10baseT, 10base2 and 10base5
56 transceivers as well as an MII bus for externally attached PHY
58 The 3c905 series typically uses a National Semiconductor
59 NS 83840A 10/100 PHY for 10/100 Mbps support in full or half-duplex.
60 The 3c905B adapters have built-in autonegotiation logic mapped onto
61 the MII for compatibility with previous drivers.
63 adapters such as the 3c905-TX and 3c905B-TX are capable of 10 or
64 100Mbps data rates in either full or half duplex and can be manually
65 configured for any supported mode or automatically negotiate the highest
66 possible mode with a link partner.
70 driver supports the following media types:
72 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
74 Enable autoselection of the media type and options.
76 option is only available with the 3c905 and 3c905B adapters with
77 external PHYs or built-in autonegotiation logic.
79 the driver will choose the mode specified in the EEPROM.
81 change this by adding media options to the
88 option can also be used to select either
94 Set 100Mbps (fast ethernet) operation.
97 option can also be used to select either
103 Enable AUI transceiver (available only on COMBO cards).
105 Enable BNC coax transceiver (available only on COMBO cards).
110 driver supports the following media options:
112 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
114 Force full duplex operation
116 Force half duplex operation.
119 Note that the 100baseTX media type is only available if supported
121 For more information on configuring this device, see
125 .It "xl%d: couldn't map memory"
126 A fatal initialization error has occurred.
127 .It "xl%d: couldn't map interrupt"
128 A fatal initialization error has occurred.
129 .It "xl%d: device timeout"
130 The device has stopped responding to the network, or there is a problem with
131 the network connection (cable).
132 .It "xl%d: no memory for rx list"
133 The driver failed to allocate an mbuf for the receiver ring.
134 .It "xl%d: no memory for tx list"
135 The driver failed to allocate an mbuf for the transmitter ring when
136 allocating a pad buffer or collapsing an mbuf chain into a cluster.
137 .It "xl%d: command never completed!"
138 Some commands issued to the 3c90x ASIC take time to complete: the
139 driver is supposed to wait until the 'command in progress' bit in
140 the status register clears before continuing.
141 In rare instances, this
143 To avoid getting caught in an infinite wait loop,
144 the driver only polls the bit for a finite number of times before
145 giving up, at which point it issues this message.
147 be printed during driver initialization on slower machines.
149 see this message but the driver continues to function normally, the
150 message can probably be ignored.
151 .It "xl%d: chip is in D3 power state -- setting to D0"
152 This message applies only to 3c905B adapters, which support power
154 Some operating systems place the 3c905B in low power
155 mode when shutting down, and some PCI BIOSes fail to bring the chip
156 out of this state before configuring it.
157 The 3c905B loses all of
158 its PCI configuration in the D3 state, so if the BIOS does not set
159 it back to full power mode in time, it won't be able to configure it
161 The driver tries to detect this condition and bring
162 the adapter back to the D0 (full power) state, but this may not be
163 enough to return the driver to a fully operational condition.
165 you see this message at boot time and the driver fails to attach
166 the device as a network interface, you will have to perform second
167 warm boot to have the device properly configured.
169 Note that this condition only occurs when warm booting from another
171 If you power down your system prior to booting
173 the card should be configured correctly.
174 .It "xl%d: WARNING: no media options bits set in the media options register!"
175 This warning may appear when using the driver on some Dell Latitude
176 docking stations with built-in 3c905-TX adapters.
178 reason, the 'MII available' bit in the media options register on
179 this particular equipment is not set, even though it should be (the
180 3c905-TX always uses an external PHY transceiver). The driver will
181 attempt to guess the proper media type based on the PCI device ID
183 The driver makes a lot of noise about this condition because
184 the author considers it a manufacturing defect.
197 device driver first appeared in
202 driver was written by
203 .An Bill Paul Aq wpaul@ctr.columbia.edu .