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38 .Nd "SysKonnect SK-984x and SK-982x PCI Gigabit Ethernet adapter driver"
40 To compile this driver into the kernel,
41 place the following lines in your
42 kernel configuration file:
43 .Bd -ragged -offset indent
48 Alternatively, to load the driver as a
49 module at boot time, place the following line in
51 .Bd -literal -offset indent
57 driver provides support for the SysKonnect SK-984x and SK-982x series PCI
58 Gigabit Ethernet adapters.
60 The SysKonnect adapters consist of two main components: the XaQti Corp.
61 XMAC II gigabit MAC and the SysKonnect GEnesis controller ASIC.
63 XMAC provides the gigabit MAC and PHY support while the GEnesis
64 provides an interface to the PCI bus, DMA support, packet buffering
66 The GEnesis can control up to two XMACs simultaneously,
67 allowing dual-port NIC configurations.
69 The SK-982x 1000baseT adapters also include a Broadcom BCM5400 1000baseTX
70 PHY which is used in place of the XMAC's internal PHY.
71 The Broadcom PHY is connected to the XMAC via its GMII port.
75 driver configures dual port SysKonnect adapters such that each XMAC
76 is treated as a separate logical network interface.
78 operate independently of each other and can be connected to separate
80 The SysKonnect driver software currently only uses the
81 second port on dual port adapters for failover purposes: if the link
82 on the primary port fails, the SysKonnect driver will automatically
83 switch traffic onto the second port.
85 Also supported is the Marvell Semiconductor 88E100* gigabit PHY.
87 The XaQti XMAC II supports full and half duplex operation with
89 The XMAC also supports unlimited frame sizes.
90 Support for jumbo frames is provided via the interface MTU setting.
91 Selecting an MTU larger than 1500 bytes with the
93 utility configures the adapter to receive and transmit jumbo frames.
94 Using jumbo frames can greatly improve performance for certain tasks,
95 such as file transfers and data streaming.
99 driver supports the following media types:
100 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
102 Enable autoselection of the media type and options.
103 The user can manually override
104 the autoselected mode by adding media options to the
108 Set 1000baseTX operation over twisted pair.
109 This is only available
110 for SK-982x series adapters with 1000baseT ports.
117 Set 1000Mbps (Gigabit Ethernet) operation.
127 driver supports the following media options:
128 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
130 Force full duplex operation.
132 Force half duplex operation.
135 For more information on configuring this device, see
138 Adapters supported by the
144 3Com 3C940 single port, 1000baseT adapter
146 3Com 3C2000-T single port, 1000baseT adapter
148 Belkin F5D5005 single port, 1000baseT adapter
150 D-Link DGE-530T single port, 1000baseT adapter
152 Linksys (revision 2) single port, 1000baseT adapter
154 SK-9521 SK-NET GE-T single port, 1000baseT adapter
156 SK-9821 SK-NET GE-T single port, 1000baseT adapter
158 SK-9822 SK-NET GE-T dual port, 1000baseT adapter
160 SK-9841 SK-NET GE-LX single port, single mode fiber adapter
162 SK-9842 SK-NET GE-LX dual port, single mode fiber adapter
164 SK-9843 SK-NET GE-SX single port, multimode fiber adapter
166 SK-9844 SK-NET GE-SX dual port, multimode fiber adapter
168 SMC 9452TX single port, 1000baseT adapter
171 Tunables can be set at the
173 prompt before booting the kernel or stored in
175 .Bl -tag -width xxxxxx
176 .It Va hw.skc.jumbo_disable
177 Disable jumbo frame support.
178 Systems with less memory can set it to a non-zero value to save memory.
179 The default value is 0.
182 The following variable is available as both
187 .Bl -tag -width xxxxxx
188 .It Va dev.skc.%d.int_mod
189 This variable controls interrupt moderation.
190 The accepted range is 10 to 10000.
191 The default value is 100 microseconds.
192 The interface has to be brought down and up again before a change takes effect.
196 .It "sk%d: couldn't map memory"
197 A fatal initialization error has occurred.
198 .It "sk%d: couldn't map ports"
199 A fatal initialization error has occurred.
200 .It "sk%d: couldn't map interrupt"
201 A fatal initialization error has occurred.
202 .It "sk%d: no memory for softc struct!"
203 The driver failed to allocate memory for per-device instance information
204 during initialization.
205 .It "sk%d: failed to enable memory mapping!"
206 The driver failed to initialize PCI shared memory mapping.
208 happen if the card is not in a bus-master slot.
209 .It "sk%d: no memory for jumbo buffers!"
210 The driver failed to allocate memory for jumbo frames during
212 .It "sk%d: watchdog timeout"
213 The device has stopped responding to the network, or there is a problem with
214 the network connection (cable).
225 .%T XaQti XMAC II datasheet
226 .%U http://people.freebsd.org/~wpaul/SysKonnect/xmacii_datasheet_rev_c_9-29.pdf
229 .%T SysKonnect GEnesis programming manual
230 .%U http://www.syskonnect.com
235 device driver first appeared in
240 driver was written by
241 .An Bill Paul Aq wpaul@ctr.columbia.edu .