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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 88E1000* 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:
101 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
103 Enable autoselection of the media type and options.
104 The user can manually override
105 the autoselected mode by adding media options to the
109 Set 1000baseTX operation over twisted pair.
110 This is only available
111 for SK-982x series adapters with 1000baseT ports.
118 Set 1000Mbps (Gigabit Ethernet) operation.
128 driver supports the following media options:
130 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
132 Force full duplex operation
134 Force half duplex operation.
139 driver also supports one special link option for 1000baseTX cards:
141 .Bl -tag -width xxxxxxxxxxxxxxxxxxxx
143 With 1000baseTX cards, establishing a link between two ports requires
144 that one port is configured as master and the other one as slave.
145 With autonegotiation,
146 the master/slave settings will be chosen automatically.
147 However when manually selecting the link state, it is necessary to
148 force one side of the link to be a master and the other a slave.
151 driver configures the ports as slaves by default.
156 will set a port as a master instead.
159 For more information on configuring this device, see
162 Adapters supported by the
168 3Com 3C940 single port, 1000baseT adapter
170 3Com 3C2000-T single port, 1000baseT adapter
172 Belkin F5D5005 single port, 1000baseT adapter
174 D-Link DGE-530T single port, 1000baseT adapter
176 Linksys EG1032 single port, 1000baseT adapter
178 SK-9521 SK-NET GE-T single port, 1000baseT adapter
180 SK-9821 SK-NET GE-T single port, 1000baseT adapter
182 SK-9822 SK-NET GE-T dual port, 1000baseT adapter
184 SK-9841 SK-NET GE-LX single port, single mode fiber adapter
186 SK-9842 SK-NET GE-LX dual port, single mode fiber adapter
188 SK-9843 SK-NET GE-SX single port, multimode fiber adapter
190 SK-9844 SK-NET GE-SX dual port, multimode fiber adapter
192 SMC 9452TX single port, 1000baseT adapter
195 Tunables can be set at the
197 prompt before booting the kernel or stored in
199 .Bl -tag -width xxxxxx
200 .It Va hw.skc.jumbo_disable
201 Disable jumbo frame support.
202 Systems with less memory can set it to a non-zero value to save memory.
203 The default value is 0.
206 The following variable is available as both
211 .Bl -tag -width xxxxxx
212 .It Va dev.skc.%d.int_mod
213 This variable controls interrupt moderation.
214 The accepted range is 10 to 10000.
215 The default value is 100 microseconds.
216 The interface has to be brought down and up again before a change takes effect.
220 .It "sk%d: couldn't map memory"
221 A fatal initialization error has occurred.
222 .It "sk%d: couldn't map ports"
223 A fatal initialization error has occurred.
224 .It "sk%d: couldn't map interrupt"
225 A fatal initialization error has occurred.
226 .It "sk%d: no memory for softc struct!"
227 The driver failed to allocate memory for per-device instance information
228 during initialization.
229 .It "sk%d: failed to enable memory mapping!"
230 The driver failed to initialize PCI shared memory mapping.
232 happen if the card is not in a bus-master slot.
233 .It "sk%d: no memory for jumbo buffers!"
234 The driver failed to allocate memory for jumbo frames during
236 .It "sk%d: watchdog timeout"
237 The device has stopped responding to the network, or there is a problem with
238 the network connection (cable).
249 .%T XaQti XMAC II datasheet
250 .%O http://www.xaqti.com
253 .%T SysKonnect GEnesis programming manual
254 .%O http://www.syskonnect.com
259 device driver first appeared in
264 driver was written by
265 .An Bill Paul Aq wpaul@ctr.columbia.edu .