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  1.\" Copyright (c) 2006 Pyun YongHyeon
  2.\" All rights reserved.
  3.\"
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 25.\" $FreeBSD$
 26.\"
 27.Dd May 23, 2011
 28.Dt MSK 4
 29.Os
 30.Sh NAME
 31.Nm msk
 32.Nd Marvell/SysKonnect Yukon II Gigabit Ethernet adapter driver
 33.Sh SYNOPSIS
 34To compile this driver into the kernel,
 35place the following lines in your
 36kernel configuration file:
 37.Bd -ragged -offset indent
 38.Cd "device miibus"
 39.Cd "device msk"
 40.Ed
 41.Pp
 42Alternatively, to load the driver as a
 43module at boot time, place the following line in
 44.Xr loader.conf 5 :
 45.Bd -literal -offset indent
 46if_msk_load="YES"
 47.Ed
 48.Sh DESCRIPTION
 49The
 50.Nm
 51device driver provides support for various NICs based on the
 52Marvell/SysKonnect Yukon II Gigabit Ethernet controller chip.
 53.Pp
 54All NICs supported by the
 55.Nm
 56driver have TCP/UDP/IP checksum offload for transmit, TCP
 57segmentation offload (TSO), hardware VLAN tag stripping/insertion
 58features and an interrupt moderation mechanism as well as a 64-bit
 59multicast hash filter.
 60The Yukon II supports TBI (ten bit interface) and GMII
 61transceivers, which means it can be used with either copper or
 621000baseX fiber applications.
 63.Pp
 64The Yukon II also supports Jumbo Frames (up to 9022 bytes), which can be
 65configured via the interface MTU setting.
 66Selecting an MTU larger than 1500 bytes with the
 67.Xr ifconfig 8
 68utility configures the adapter to receive and transmit Jumbo Frames.
 69.Pp
 70The
 71.Nm
 72driver supports the following media types:
 73.Bl -tag -width ".Cm 10baseT/UTP"
 74.It Cm autoselect
 75Enable autoselection of the media type and options.
 76The user can manually override
 77the autoselected mode by adding media options to
 78.Xr rc.conf 5 .
 79.It Cm 10baseT/UTP
 80Set 10Mbps operation.
 81The
 82.Xr ifconfig 8
 83.Cm mediaopt
 84option can also be used to select either
 85.Cm full-duplex
 86or
 87.Cm half-duplex
 88modes.
 89.It Cm 100baseTX
 90Set 100Mbps (Fast Ethernet) operation.
 91The
 92.Xr ifconfig 8
 93.Cm mediaopt
 94option can also be used to select either
 95.Cm full-duplex
 96or
 97.Cm half-duplex
 98modes.
 99.It Cm 1000baseTX
100Set 1000baseTX operation over twisted pair.
101The
102.Xr ifconfig 8
103.Cm mediaopt
104option can also be used to select either
105.Cm full-duplex
106or
107.Cm half-duplex
108modes.
109.It Cm 1000baseSX
110Set 1000Mbps (Gigabit Ethernet) operation.
111Both
112.Cm full-duplex
113and
114.Cm half-duplex
115modes are supported.
116.El
117.Pp
118The
119.Nm
120driver supports the following media options:
121.Bl -tag -width ".Cm full-duplex"
122.It Cm full-duplex
123Force full duplex operation.
124.It Cm half-duplex
125Force half duplex operation.
126.El
127.Pp
128For more information on configuring this device, see
129.Xr ifconfig 8 .
130.Sh HARDWARE
131The
132.Nm
133driver provides support for various NICs based on the Marvell/SysKonnect
134Yukon II based Gigabit Ethernet controller chips, including:
135.Pp
136.Bl -bullet -compact
137.It
138D-Link 550SX Gigabit Ethernet
139.It
140D-Link 560SX Gigabit Ethernet
141.It
142D-Link 560T Gigabit Ethernet
143.It
144Marvell Yukon 88E8021CU Gigabit Ethernet
145.It
146Marvell Yukon 88E8021 SX/LX Gigabit Ethernet
147.It
148Marvell Yukon 88E8022CU Gigabit Ethernet
149.It
150Marvell Yukon 88E8022 SX/LX Gigabit Ethernet
151.It
152Marvell Yukon 88E8061CU Gigabit Ethernet
153.It
154Marvell Yukon 88E8061 SX/LX Gigabit Ethernet
155.It
156Marvell Yukon 88E8062CU Gigabit Ethernet
157.It
158Marvell Yukon 88E8062 SX/LX Gigabit Ethernet
159.It
160Marvell Yukon 88E8035 Fast Ethernet
161.It
162Marvell Yukon 88E8036 Fast Ethernet
163.It
164Marvell Yukon 88E8038 Fast Ethernet
165.It
166Marvell Yukon 88E8039 Fast Ethernet
167.It
168Marvell Yukon 88E8040 Fast Ethernet
169.It
170Marvell Yukon 88E8040T Fast Ethernet
171.It
172Marvell Yukon 88E8042 Fast Ethernet
173.It
174Marvell Yukon 88E8048 Fast Ethernet
175.It
176Marvell Yukon 88E8050 Gigabit Ethernet
177.It
178Marvell Yukon 88E8052 Gigabit Ethernet
179.It
180Marvell Yukon 88E8053 Gigabit Ethernet
181.It
182Marvell Yukon 88E8055 Gigabit Ethernet
183.It
184Marvell Yukon 88E8056 Gigabit Ethernet
185.It
186Marvell Yukon 88E8057 Gigabit Ethernet
187.It
188Marvell Yukon 88E8058 Gigabit Ethernet
189.It
190Marvell Yukon 88E8059 Gigabit Ethernet
191.It
192Marvell Yukon 88E8070 Gigabit Ethernet
193.It
194Marvell Yukon 88E8071 Gigabit Ethernet
195.It
196Marvell Yukon 88E8072 Gigabit Ethernet
197.It
198Marvell Yukon 88E8075 Gigabit Ethernet
199.It
200SysKonnect SK-9Sxx Gigabit Ethernet
201.It
202SysKonnect SK-9Exx Gigabit Ethernet
203.El
204.Sh LOADER TUNABLES
205Tunables can be set at the
206.Xr loader 8
207prompt before booting the kernel or stored in
208.Xr loader.conf 5 .
209.Bl -tag -width indent
210.It Va hw.msk.msi_disable
211This tunable disables MSI support on the Ethernet hardware.
212The default value is 0.
213.El
214.Sh SYSCTL VARIABLES
215The following variables are available as both
216.Xr sysctl 8
217variables and
218.Xr loader 8
219tunables:
220.Bl -tag -width indent
221.It Va dev.mskc.%d.int_holdoff
222Maximum number of time to delay interrupts.
223The valid range is 0 to 34359738 for 125MHz clock in units of 1us,
224the default is 100 (100us).
225The interface need to be brought down and up again before a change
226takes effect.
227.It Va dev.mskc.%d.process_limit
228Maximum amount of Rx events to be processed in the event loop before
229rescheduling a taskqueue.
230The accepted range is 30 to 256, the default value is 128 events.
231The interface does not need to be brought down and up again before
232a change takes effect.
233.El
234.Sh SEE ALSO
235.Xr altq 4 ,
236.Xr arp 4 ,
237.Xr miibus 4 ,
238.Xr netintro 4 ,
239.Xr ng_ether 4 ,
240.Xr vlan 4 ,
241.Xr ifconfig 8
242.Sh HISTORY
243The
244.Nm
245driver was written by
246.An Pyun YongHyeon
247.Aq yongari@FreeBSD.org
248and it is based on
249.Xr sk 4
250and Marvell's
251.Fx
252driver.
253It first appeared in
254.Fx 7.0
255and
256.Fx 6.3 .