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NAMEsk —
SysKonnect SK-984x and SK-982x PCI Gigabit Ethernet adapter
driver
SYNOPSISTo compile this driver into the kernel, place the following lines in your kernel configuration file:device miibus
device sk Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): if_sk_load="YES" DESCRIPTIONThesk driver provides support for the SysKonnect
SK-984x and SK-982x series PCI Gigabit Ethernet adapters.
The SysKonnect adapters consist of two main components: the XaQti Corp. XMAC II gigabit MAC and the SysKonnect GEnesis controller ASIC. The XMAC provides the gigabit MAC and PHY support while the GEnesis provides an interface to the PCI bus, DMA support, packet buffering and arbitration. The GEnesis can control up to two XMACs simultaneously, allowing dual-port NIC configurations. The SK-982x 1000baseT adapters also include a Broadcom BCM5400 1000baseTX PHY which is used in place of the XMAC's internal PHY. The Broadcom PHY is connected to the XMAC via its GMII port. The Also supported is the Marvell Semiconductor 88E100* gigabit PHY. The XaQti XMAC II supports full and half duplex operation with autonegotiation. The XMAC also supports unlimited frame sizes. Support for jumbo frames is provided via the interface MTU setting. Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility configures the adapter to receive and transmit jumbo frames. Using jumbo frames can greatly improve performance for certain tasks, such as file transfers and data streaming. The
The
For more information on configuring this device, see ifconfig(8). HARDWAREAdapters supported by thesk driver include:
LOADER TUNABLESTunables can be set at the loader(8) prompt before booting the kernel or stored in loader.conf(5).
SYSCTL VARIABLESThe following variable is available as both sysctl(8) variable and loader(8) tunable:
DIAGNOSTICS
SEE ALSOaltq(4), arp(4), miibus(4), netintro(4), ng_ether(4), vlan(4), ifconfig(8)XaQti XMAC II datasheet, http://people.freebsd.org/~wpaul/SysKonnect/xmacii_datasheet_rev_c_9-29.pdf. SysKonnect GEnesis programming manual, http://www.syskonnect.com. HISTORYThesk device driver first appeared in
FreeBSD 3.0.
AUTHORSThesk driver was written by Bill
Paul
<wpaul@ctr.columbia.edu>.
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